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thinkpad_acpi.c
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linux-6.19.14/drivers/platform/x86/lenovo/thinkpad_acpi.c
1// SPDX-License-Identifier: GPL-2.0-or-later 2/* 3 * thinkpad_acpi.c - ThinkPad ACPI Extras 4 * 5 * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net> 6 * Copyright (C) 2006-2009 Henrique de Moraes Holschuh <hmh@hmh.eng.br> 7 */ 8 9#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 10 11#define TPACPI_VERSION "0.26" 12#define TPACPI_SYSFS_VERSION 0x030000 13 14/* 15 * Changelog: 16 * 2007-10-20 changelog trimmed down 17 * 18 * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to 19 * drivers/misc. 20 * 21 * 2006-11-22 0.13 new maintainer 22 * changelog now lives in git commit history, and will 23 * not be updated further in-file. 24 * 25 * 2005-03-17 0.11 support for 600e, 770x 26 * thanks to Jamie Lentin <lentinj@dial.pipex.com> 27 * 28 * 2005-01-16 0.9 use MODULE_VERSION 29 * thanks to Henrik Brix Andersen <brix@gentoo.org> 30 * fix parameter passing on module loading 31 * thanks to Rusty Russell <rusty@rustcorp.com.au> 32 * thanks to Jim Radford <radford@blackbean.org> 33 * 2004-11-08 0.8 fix init error case, don't return from a macro 34 * thanks to Chris Wright <chrisw@osdl.org> 35 */ 36 37#include <linux/acpi.h> 38#include <linux/backlight.h> 39#include <linux/bitops.h> 40#include <linux/delay.h> 41#include <linux/dmi.h> 42#include <linux/freezer.h> 43#include <linux/hwmon.h> 44#include <linux/hwmon-sysfs.h> 45#include <linux/init.h> 46#include <linux/input.h> 47#include <linux/input/sparse-keymap.h> 48#include <linux/jiffies.h> 49#include <linux/kernel.h> 50#include <linux/kthread.h> 51#include <linux/leds.h> 52#include <linux/list.h> 53#include <linux/lockdep.h> 54#include <linux/module.h> 55#include <linux/mutex.h> 56#include <linux/nvram.h> 57#include <linux/pci.h> 58#include <linux/platform_device.h> 59#include <linux/platform_profile.h> 60#include <linux/power_supply.h> 61#include <linux/proc_fs.h> 62#include <linux/rfkill.h> 63#include <linux/sched.h> 64#include <linux/sched/signal.h> 65#include <linux/seq_file.h> 66#include <linux/slab.h> 67#include <linux/string.h> 68#include <linux/string_helpers.h> 69#include <linux/sysfs.h> 70#include <linux/types.h> 71#include <linux/uaccess.h> 72#include <linux/units.h> 73#include <linux/workqueue.h> 74 75#include <acpi/battery.h> 76#include <acpi/video.h> 77 78#include <drm/drm_privacy_screen_driver.h> 79 80#include <sound/control.h> 81#include <sound/core.h> 82#include <sound/initval.h> 83 84#include "../dual_accel_detect.h" 85 86/* ThinkPad CMOS commands */ 87#define TP_CMOS_VOLUME_DOWN 0 88#define TP_CMOS_VOLUME_UP 1 89#define TP_CMOS_VOLUME_MUTE 2 90#define TP_CMOS_BRIGHTNESS_UP 4 91#define TP_CMOS_BRIGHTNESS_DOWN 5 92#define TP_CMOS_THINKLIGHT_ON 12 93#define TP_CMOS_THINKLIGHT_OFF 13 94 95/* NVRAM Addresses */ 96enum tp_nvram_addr { 97 TP_NVRAM_ADDR_HK2 = 0x57, 98 TP_NVRAM_ADDR_THINKLIGHT = 0x58, 99 TP_NVRAM_ADDR_VIDEO = 0x59, 100 TP_NVRAM_ADDR_BRIGHTNESS = 0x5e, 101 TP_NVRAM_ADDR_MIXER = 0x60, 102}; 103 104/* NVRAM bit masks */ 105enum { 106 TP_NVRAM_MASK_HKT_THINKPAD = 0x08, 107 TP_NVRAM_MASK_HKT_ZOOM = 0x20, 108 TP_NVRAM_MASK_HKT_DISPLAY = 0x40, 109 TP_NVRAM_MASK_HKT_HIBERNATE = 0x80, 110 TP_NVRAM_MASK_THINKLIGHT = 0x10, 111 TP_NVRAM_MASK_HKT_DISPEXPND = 0x30, 112 TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20, 113 TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f, 114 TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0, 115 TP_NVRAM_MASK_MUTE = 0x40, 116 TP_NVRAM_MASK_HKT_VOLUME = 0x80, 117 TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f, 118 TP_NVRAM_POS_LEVEL_VOLUME = 0, 119}; 120 121/* Misc NVRAM-related */ 122enum { 123 TP_NVRAM_LEVEL_VOLUME_MAX = 14, 124}; 125 126/* ACPI HIDs */ 127#define TPACPI_ACPI_IBM_HKEY_HID "IBM0068" 128#define TPACPI_ACPI_LENOVO_HKEY_HID "LEN0068" 129#define TPACPI_ACPI_LENOVO_HKEY_V2_HID "LEN0268" 130#define TPACPI_ACPI_EC_HID "PNP0C09" 131 132/* Input IDs */ 133#define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */ 134#define TPACPI_HKEY_INPUT_VERSION 0x4101 135 136/* ACPI \WGSV commands */ 137enum { 138 TP_ACPI_WGSV_GET_STATE = 0x01, /* Get state information */ 139 TP_ACPI_WGSV_PWR_ON_ON_RESUME = 0x02, /* Resume WWAN powered on */ 140 TP_ACPI_WGSV_PWR_OFF_ON_RESUME = 0x03, /* Resume WWAN powered off */ 141 TP_ACPI_WGSV_SAVE_STATE = 0x04, /* Save state for S4/S5 */ 142}; 143 144/* TP_ACPI_WGSV_GET_STATE bits */ 145enum { 146 TP_ACPI_WGSV_STATE_WWANEXIST = 0x0001, /* WWAN hw available */ 147 TP_ACPI_WGSV_STATE_WWANPWR = 0x0002, /* WWAN radio enabled */ 148 TP_ACPI_WGSV_STATE_WWANPWRRES = 0x0004, /* WWAN state at resume */ 149 TP_ACPI_WGSV_STATE_WWANBIOSOFF = 0x0008, /* WWAN disabled in BIOS */ 150 TP_ACPI_WGSV_STATE_BLTHEXIST = 0x0001, /* BLTH hw available */ 151 TP_ACPI_WGSV_STATE_BLTHPWR = 0x0002, /* BLTH radio enabled */ 152 TP_ACPI_WGSV_STATE_BLTHPWRRES = 0x0004, /* BLTH state at resume */ 153 TP_ACPI_WGSV_STATE_BLTHBIOSOFF = 0x0008, /* BLTH disabled in BIOS */ 154 TP_ACPI_WGSV_STATE_UWBEXIST = 0x0010, /* UWB hw available */ 155 TP_ACPI_WGSV_STATE_UWBPWR = 0x0020, /* UWB radio enabled */ 156}; 157 158/* HKEY events */ 159enum tpacpi_hkey_event_t { 160 /* Original hotkeys */ 161 TP_HKEY_EV_ORIG_KEY_START = 0x1001, /* First hotkey (FN+F1) */ 162 TP_HKEY_EV_BRGHT_UP = 0x1010, /* Brightness up */ 163 TP_HKEY_EV_BRGHT_DOWN = 0x1011, /* Brightness down */ 164 TP_HKEY_EV_KBD_LIGHT = 0x1012, /* Thinklight/kbd backlight */ 165 TP_HKEY_EV_VOL_UP = 0x1015, /* Volume up or unmute */ 166 TP_HKEY_EV_VOL_DOWN = 0x1016, /* Volume down or unmute */ 167 TP_HKEY_EV_VOL_MUTE = 0x1017, /* Mixer output mute */ 168 TP_HKEY_EV_ORIG_KEY_END = 0x1020, /* Last original hotkey code */ 169 170 /* Adaptive keyboard (2014 X1 Carbon) */ 171 TP_HKEY_EV_DFR_CHANGE_ROW = 0x1101, /* Change adaptive kbd Fn row mode */ 172 TP_HKEY_EV_DFR_S_QUICKVIEW_ROW = 0x1102, /* Set adap. kbd Fn row to function mode */ 173 TP_HKEY_EV_ADAPTIVE_KEY_START = 0x1103, /* First hotkey code on adaptive kbd */ 174 TP_HKEY_EV_ADAPTIVE_KEY_END = 0x1116, /* Last hotkey code on adaptive kbd */ 175 176 /* Extended hotkey events in 2017+ models */ 177 TP_HKEY_EV_EXTENDED_KEY_START = 0x1300, /* First extended hotkey code */ 178 TP_HKEY_EV_PRIVACYGUARD_TOGGLE = 0x130f, /* Toggle priv.guard on/off */ 179 TP_HKEY_EV_EXTENDED_KEY_END = 0x1319, /* Last extended hotkey code using 180 * hkey -> scancode translation for 181 * compat. Later codes are entered 182 * directly in the sparse-keymap. 183 */ 184 TP_HKEY_EV_AMT_TOGGLE = 0x131a, /* Toggle AMT on/off */ 185 TP_HKEY_EV_CAMERASHUTTER_TOGGLE = 0x131b, /* Toggle Camera Shutter */ 186 TP_HKEY_EV_DOUBLETAP_TOGGLE = 0x131c, /* Toggle trackpoint doubletap on/off */ 187 TP_HKEY_EV_PROFILE_TOGGLE = 0x131f, /* Toggle platform profile in 2024 systems */ 188 TP_HKEY_EV_PROFILE_TOGGLE2 = 0x1401, /* Toggle platform profile in 2025 + systems */ 189 190 /* Reasons for waking up from S3/S4 */ 191 TP_HKEY_EV_WKUP_S3_UNDOCK = 0x2304, /* undock requested, S3 */ 192 TP_HKEY_EV_WKUP_S4_UNDOCK = 0x2404, /* undock requested, S4 */ 193 TP_HKEY_EV_WKUP_S3_BAYEJ = 0x2305, /* bay ejection req, S3 */ 194 TP_HKEY_EV_WKUP_S4_BAYEJ = 0x2405, /* bay ejection req, S4 */ 195 TP_HKEY_EV_WKUP_S3_BATLOW = 0x2313, /* battery empty, S3 */ 196 TP_HKEY_EV_WKUP_S4_BATLOW = 0x2413, /* battery empty, S4 */ 197 198 /* Auto-sleep after eject request */ 199 TP_HKEY_EV_BAYEJ_ACK = 0x3003, /* bay ejection complete */ 200 TP_HKEY_EV_UNDOCK_ACK = 0x4003, /* undock complete */ 201 202 /* Misc bay events */ 203 TP_HKEY_EV_OPTDRV_EJ = 0x3006, /* opt. drive tray ejected */ 204 TP_HKEY_EV_HOTPLUG_DOCK = 0x4010, /* docked into hotplug dock 205 or port replicator */ 206 TP_HKEY_EV_HOTPLUG_UNDOCK = 0x4011, /* undocked from hotplug 207 dock or port replicator */ 208 /* 209 * Thinkpad X1 Tablet series devices emit 0x4012 and 0x4013 210 * when keyboard cover is attached, detached or folded onto the back 211 */ 212 TP_HKEY_EV_KBD_COVER_ATTACH = 0x4012, /* keyboard cover attached */ 213 TP_HKEY_EV_KBD_COVER_DETACH = 0x4013, /* keyboard cover detached or folded back */ 214 215 /* User-interface events */ 216 TP_HKEY_EV_LID_CLOSE = 0x5001, /* laptop lid closed */ 217 TP_HKEY_EV_LID_OPEN = 0x5002, /* laptop lid opened */ 218 TP_HKEY_EV_TABLET_TABLET = 0x5009, /* tablet swivel up */ 219 TP_HKEY_EV_TABLET_NOTEBOOK = 0x500a, /* tablet swivel down */ 220 TP_HKEY_EV_TABLET_CHANGED = 0x60c0, /* X1 Yoga (2016): 221 * enter/leave tablet mode 222 */ 223 TP_HKEY_EV_PEN_INSERTED = 0x500b, /* tablet pen inserted */ 224 TP_HKEY_EV_PEN_REMOVED = 0x500c, /* tablet pen removed */ 225 TP_HKEY_EV_BRGHT_CHANGED = 0x5010, /* backlight control event */ 226 227 /* Key-related user-interface events */ 228 TP_HKEY_EV_KEY_NUMLOCK = 0x6000, /* NumLock key pressed */ 229 TP_HKEY_EV_KEY_FN = 0x6005, /* Fn key pressed? E420 */ 230 TP_HKEY_EV_KEY_FN_ESC = 0x6060, /* Fn+Esc key pressed X240 */ 231 232 /* Thermal events */ 233 TP_HKEY_EV_ALARM_BAT_HOT = 0x6011, /* battery too hot */ 234 TP_HKEY_EV_ALARM_BAT_XHOT = 0x6012, /* battery critically hot */ 235 TP_HKEY_EV_ALARM_BAT_LIM_CHANGE = 0x6013, /* battery charge limit changed*/ 236 TP_HKEY_EV_ALARM_SENSOR_HOT = 0x6021, /* sensor too hot */ 237 TP_HKEY_EV_ALARM_SENSOR_XHOT = 0x6022, /* sensor critically hot */ 238 TP_HKEY_EV_THM_TABLE_CHANGED = 0x6030, /* windows; thermal table changed */ 239 TP_HKEY_EV_THM_CSM_COMPLETED = 0x6032, /* windows; thermal control set 240 * command completed. Related to 241 * AML DYTC */ 242 TP_HKEY_EV_THM_TRANSFM_CHANGED = 0x60F0, /* windows; thermal transformation 243 * changed. Related to AML GMTS */ 244 245 /* AC-related events */ 246 TP_HKEY_EV_AC_CHANGED = 0x6040, /* AC status changed */ 247 248 /* Further user-interface events */ 249 TP_HKEY_EV_PALM_DETECTED = 0x60b0, /* palm hoveres keyboard */ 250 TP_HKEY_EV_PALM_UNDETECTED = 0x60b1, /* palm removed */ 251 252 /* Misc */ 253 TP_HKEY_EV_RFKILL_CHANGED = 0x7000, /* rfkill switch changed */ 254 255 /* Misc2 */ 256 TP_HKEY_EV_TRACK_DOUBLETAP = 0x8036, /* trackpoint doubletap */ 257}; 258 259/**************************************************************************** 260 * Main driver 261 */ 262 263#define TPACPI_NAME "thinkpad" 264#define TPACPI_DESC "ThinkPad ACPI Extras" 265#define TPACPI_FILE TPACPI_NAME "_acpi" 266#define TPACPI_URL "http://ibm-acpi.sf.net/" 267#define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net" 268 269#define TPACPI_PROC_DIR "ibm" 270#define TPACPI_ACPI_EVENT_PREFIX "ibm" 271#define TPACPI_DRVR_NAME TPACPI_FILE 272#define TPACPI_DRVR_SHORTNAME "tpacpi" 273#define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon" 274 275#define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd" 276#define TPACPI_WORKQUEUE_NAME "ktpacpid" 277 278#define TPACPI_MAX_ACPI_ARGS 3 279 280/* Debugging printk groups */ 281#define TPACPI_DBG_ALL 0xffff 282#define TPACPI_DBG_DISCLOSETASK 0x8000 283#define TPACPI_DBG_INIT 0x0001 284#define TPACPI_DBG_EXIT 0x0002 285#define TPACPI_DBG_RFKILL 0x0004 286#define TPACPI_DBG_HKEY 0x0008 287#define TPACPI_DBG_FAN 0x0010 288#define TPACPI_DBG_BRGHT 0x0020 289#define TPACPI_DBG_MIXER 0x0040 290 291#define FAN_NOT_PRESENT 65535 292 293/**************************************************************************** 294 * Driver-wide structs and misc. variables 295 */ 296 297struct ibm_struct; 298 299struct tp_acpi_drv_struct { 300 const struct acpi_device_id *hid; 301 struct acpi_driver *driver; 302 303 void (*notify) (struct ibm_struct *, u32); 304 acpi_handle *handle; 305 u32 type; 306 struct acpi_device *device; 307}; 308 309struct ibm_struct { 310 char *name; 311 312 int (*read) (struct seq_file *); 313 int (*write) (char *); 314 void (*exit) (void); 315 void (*resume) (void); 316 void (*suspend) (void); 317 void (*shutdown) (void); 318 319 struct list_head all_drivers; 320 321 struct tp_acpi_drv_struct *acpi; 322 323 struct { 324 u8 acpi_driver_registered:1; 325 u8 acpi_notify_installed:1; 326 u8 proc_created:1; 327 u8 init_called:1; 328 u8 experimental:1; 329 } flags; 330}; 331 332struct ibm_init_struct { 333 char param[32]; 334 335 int (*init) (struct ibm_init_struct *); 336 umode_t base_procfs_mode; 337 struct ibm_struct *data; 338}; 339 340/* DMI Quirks */ 341struct quirk_entry { 342 bool btusb_bug; 343}; 344 345static struct quirk_entry quirk_btusb_bug = { 346 .btusb_bug = true, 347}; 348 349static struct { 350 u32 bluetooth:1; 351 u32 hotkey:1; 352 u32 hotkey_mask:1; 353 u32 hotkey_wlsw:1; 354 enum { 355 TP_HOTKEY_TABLET_NONE = 0, 356 TP_HOTKEY_TABLET_USES_MHKG, 357 TP_HOTKEY_TABLET_USES_GMMS, 358 } hotkey_tablet; 359 u32 kbdlight:1; 360 u32 light:1; 361 u32 light_status:1; 362 u32 bright_acpimode:1; 363 u32 bright_unkfw:1; 364 u32 wan:1; 365 u32 uwb:1; 366 u32 fan_ctrl_status_undef:1; 367 u32 second_fan:1; 368 u32 second_fan_ctl:1; 369 u32 beep_needs_two_args:1; 370 u32 mixer_no_level_control:1; 371 u32 battery_force_primary:1; 372 u32 platform_drv_registered:1; 373 u32 hotkey_poll_active:1; 374 u32 has_adaptive_kbd:1; 375 u32 kbd_lang:1; 376 u32 trackpoint_doubletap:1; 377 struct quirk_entry *quirks; 378} tp_features; 379 380static struct { 381 u16 hotkey_mask_ff:1; 382 u16 volume_ctrl_forbidden:1; 383} tp_warned; 384 385struct thinkpad_id_data { 386 unsigned int vendor; /* ThinkPad vendor: 387 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */ 388 389 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */ 390 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */ 391 392 u32 bios_model; /* 1Y = 0x3159, 0 = unknown */ 393 u32 ec_model; 394 u16 bios_release; /* 1ZETK1WW = 0x4b31, 0 = unknown */ 395 u16 ec_release; 396 397 char *model_str; /* ThinkPad T43 */ 398 char *nummodel_str; /* 9384A9C for a 9384-A9C model */ 399}; 400static struct thinkpad_id_data thinkpad_id; 401 402static enum { 403 TPACPI_LIFE_INIT = 0, 404 TPACPI_LIFE_RUNNING, 405 TPACPI_LIFE_EXITING, 406} tpacpi_lifecycle; 407 408static int experimental; 409static u32 dbg_level; 410 411static struct workqueue_struct *tpacpi_wq; 412 413enum led_status_t { 414 TPACPI_LED_OFF = 0, 415 TPACPI_LED_ON, 416 TPACPI_LED_BLINK, 417}; 418 419/* tpacpi LED class */ 420struct tpacpi_led_classdev { 421 struct led_classdev led_classdev; 422 int led; 423}; 424 425/* brightness level capabilities */ 426static unsigned int bright_maxlvl; /* 0 = unknown */ 427 428#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 429static int dbg_wlswemul; 430static bool tpacpi_wlsw_emulstate; 431static int dbg_bluetoothemul; 432static bool tpacpi_bluetooth_emulstate; 433static int dbg_wwanemul; 434static bool tpacpi_wwan_emulstate; 435static int dbg_uwbemul; 436static bool tpacpi_uwb_emulstate; 437#endif 438 439 440/************************************************************************* 441 * Debugging helpers 442 */ 443 444#define dbg_printk(a_dbg_level, format, arg...) \ 445do { \ 446 if (dbg_level & (a_dbg_level)) \ 447 printk(KERN_DEBUG pr_fmt("%s: " format), \ 448 __func__, ##arg); \ 449} while (0) 450 451#ifdef CONFIG_THINKPAD_ACPI_DEBUG 452#define vdbg_printk dbg_printk 453static const char *str_supported(int is_supported); 454#else 455static inline const char *str_supported(int is_supported) { return ""; } 456#define vdbg_printk(a_dbg_level, format, arg...) \ 457 do { if (0) no_printk(format, ##arg); } while (0) 458#endif 459 460static void tpacpi_log_usertask(const char * const what) 461{ 462 printk(KERN_DEBUG pr_fmt("%s: access by process with PID %d\n"), 463 what, task_tgid_vnr(current)); 464} 465 466#define tpacpi_disclose_usertask(what, format, arg...) \ 467do { \ 468 if (unlikely((dbg_level & TPACPI_DBG_DISCLOSETASK) && \ 469 (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \ 470 printk(KERN_DEBUG pr_fmt("%s: PID %d: " format), \ 471 what, task_tgid_vnr(current), ## arg); \ 472 } \ 473} while (0) 474 475/* 476 * Quirk handling helpers 477 * 478 * ThinkPad IDs and versions seen in the field so far are 479 * two or three characters from the set [0-9A-Z], i.e. base 36. 480 * 481 * We use values well outside that range as specials. 482 */ 483 484#define TPACPI_MATCH_ANY 0xffffffffU 485#define TPACPI_MATCH_ANY_VERSION 0xffffU 486#define TPACPI_MATCH_UNKNOWN 0U 487 488/* TPID('1', 'Y') == 0x3159 */ 489#define TPID(__c1, __c2) (((__c1) << 8) | (__c2)) 490#define TPID3(__c1, __c2, __c3) (((__c1) << 16) | ((__c2) << 8) | (__c3)) 491#define TPVER TPID 492 493#define TPACPI_Q_IBM(__id1, __id2, __quirk) \ 494 { .vendor = PCI_VENDOR_ID_IBM, \ 495 .bios = TPID(__id1, __id2), \ 496 .ec = TPACPI_MATCH_ANY, \ 497 .quirks = (__quirk) } 498 499#define TPACPI_Q_LNV(__id1, __id2, __quirk) \ 500 { .vendor = PCI_VENDOR_ID_LENOVO, \ 501 .bios = TPID(__id1, __id2), \ 502 .ec = TPACPI_MATCH_ANY, \ 503 .quirks = (__quirk) } 504 505#define TPACPI_Q_LNV3(__id1, __id2, __id3, __quirk) \ 506 { .vendor = PCI_VENDOR_ID_LENOVO, \ 507 .bios = TPID3(__id1, __id2, __id3), \ 508 .ec = TPACPI_MATCH_ANY, \ 509 .quirks = (__quirk) } 510 511#define TPACPI_QEC_IBM(__id1, __id2, __quirk) \ 512 { .vendor = PCI_VENDOR_ID_IBM, \ 513 .bios = TPACPI_MATCH_ANY, \ 514 .ec = TPID(__id1, __id2), \ 515 .quirks = (__quirk) } 516 517#define TPACPI_QEC_LNV(__id1, __id2, __quirk) \ 518 { .vendor = PCI_VENDOR_ID_LENOVO, \ 519 .bios = TPACPI_MATCH_ANY, \ 520 .ec = TPID(__id1, __id2), \ 521 .quirks = (__quirk) } 522 523struct tpacpi_quirk { 524 unsigned int vendor; 525 u32 bios; 526 u32 ec; 527 unsigned long quirks; 528}; 529 530/** 531 * tpacpi_check_quirks() - search BIOS/EC version on a list 532 * @qlist: array of &struct tpacpi_quirk 533 * @qlist_size: number of elements in @qlist 534 * 535 * Iterates over a quirks list until one is found that matches the 536 * ThinkPad's vendor, BIOS and EC model. 537 * 538 * Returns: %0 if nothing matches, otherwise returns the quirks field of 539 * the matching &struct tpacpi_quirk entry. 540 * 541 * The match criteria is: vendor, ec and bios must match. 542 */ 543static unsigned long __init tpacpi_check_quirks( 544 const struct tpacpi_quirk *qlist, 545 unsigned int qlist_size) 546{ 547 while (qlist_size) { 548 if ((qlist->vendor == thinkpad_id.vendor || 549 qlist->vendor == TPACPI_MATCH_ANY) && 550 (qlist->bios == thinkpad_id.bios_model || 551 qlist->bios == TPACPI_MATCH_ANY) && 552 (qlist->ec == thinkpad_id.ec_model || 553 qlist->ec == TPACPI_MATCH_ANY)) 554 return qlist->quirks; 555 556 qlist_size--; 557 qlist++; 558 } 559 return 0; 560} 561 562static __always_inline bool __pure __init tpacpi_is_lenovo(void) 563{ 564 return thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO; 565} 566 567static __always_inline bool __pure __init tpacpi_is_ibm(void) 568{ 569 return thinkpad_id.vendor == PCI_VENDOR_ID_IBM; 570} 571 572/**************************************************************************** 573 **************************************************************************** 574 * 575 * ACPI Helpers and device model 576 * 577 **************************************************************************** 578 ****************************************************************************/ 579 580/************************************************************************* 581 * ACPI basic handles 582 */ 583 584static acpi_handle root_handle; 585static acpi_handle ec_handle; 586 587#define TPACPI_HANDLE(object, parent, paths...) \ 588 static acpi_handle object##_handle; \ 589 static const acpi_handle * const object##_parent __initconst = \ 590 &parent##_handle; \ 591 static char *object##_paths[] __initdata = { paths } 592 593TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */ 594TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */ 595 596TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */ 597 /* T4x, X31, X40 */ 598 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */ 599 "\\CMS", /* R40, R40e */ 600 ); /* all others */ 601 602TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */ 603 "^HKEY", /* R30, R31 */ 604 "HKEY", /* all others */ 605 ); /* 570 */ 606 607/************************************************************************* 608 * ACPI helpers 609 */ 610 611static int acpi_evalf(acpi_handle handle, 612 int *res, char *method, char *fmt, ...) 613{ 614 char *fmt0 = fmt; 615 struct acpi_object_list params; 616 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS]; 617 struct acpi_buffer result, *resultp; 618 union acpi_object out_obj; 619 acpi_status status; 620 va_list ap; 621 char res_type; 622 int success; 623 int quiet; 624 625 if (!*fmt) { 626 pr_err("acpi_evalf() called with empty format\n"); 627 return 0; 628 } 629 630 if (*fmt == 'q') { 631 quiet = 1; 632 fmt++; 633 } else 634 quiet = 0; 635 636 res_type = *(fmt++); 637 638 params.count = 0; 639 params.pointer = &in_objs[0]; 640 641 va_start(ap, fmt); 642 while (*fmt) { 643 char c = *(fmt++); 644 switch (c) { 645 case 'd': /* int */ 646 in_objs[params.count].integer.value = va_arg(ap, int); 647 in_objs[params.count++].type = ACPI_TYPE_INTEGER; 648 break; 649 /* add more types as needed */ 650 default: 651 pr_err("acpi_evalf() called with invalid format character '%c'\n", 652 c); 653 va_end(ap); 654 return 0; 655 } 656 } 657 va_end(ap); 658 659 if (res_type != 'v') { 660 result.length = sizeof(out_obj); 661 result.pointer = &out_obj; 662 resultp = &result; 663 } else 664 resultp = NULL; 665 666 status = acpi_evaluate_object(handle, method, ¶ms, resultp); 667 668 switch (res_type) { 669 case 'd': /* int */ 670 success = (status == AE_OK && 671 out_obj.type == ACPI_TYPE_INTEGER); 672 if (success && res) 673 *res = out_obj.integer.value; 674 break; 675 case 'v': /* void */ 676 success = status == AE_OK; 677 break; 678 /* add more types as needed */ 679 default: 680 pr_err("acpi_evalf() called with invalid format character '%c'\n", 681 res_type); 682 return 0; 683 } 684 685 if (!success && !quiet) 686 pr_err("acpi_evalf(%s, %s, ...) failed: %s\n", 687 method, fmt0, acpi_format_exception(status)); 688 689 return success; 690} 691 692static int acpi_ec_read(int i, u8 *p) 693{ 694 int v; 695 696 if (ecrd_handle) { 697 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i)) 698 return 0; 699 *p = v; 700 } else { 701 if (ec_read(i, p) < 0) 702 return 0; 703 } 704 705 return 1; 706} 707 708static int acpi_ec_write(int i, u8 v) 709{ 710 if (ecwr_handle) { 711 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v)) 712 return 0; 713 } else { 714 if (ec_write(i, v) < 0) 715 return 0; 716 } 717 718 return 1; 719} 720 721static int issue_thinkpad_cmos_command(int cmos_cmd) 722{ 723 if (!cmos_handle) 724 return -ENXIO; 725 726 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd)) 727 return -EIO; 728 729 return 0; 730} 731 732/************************************************************************* 733 * ACPI device model 734 */ 735 736#define TPACPI_ACPIHANDLE_INIT(object) \ 737 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \ 738 object##_paths, ARRAY_SIZE(object##_paths)) 739 740static void __init drv_acpi_handle_init(const char *name, 741 acpi_handle *handle, const acpi_handle parent, 742 char **paths, const int num_paths) 743{ 744 int i; 745 acpi_status status; 746 747 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n", 748 name); 749 750 for (i = 0; i < num_paths; i++) { 751 status = acpi_get_handle(parent, paths[i], handle); 752 if (ACPI_SUCCESS(status)) { 753 dbg_printk(TPACPI_DBG_INIT, 754 "Found ACPI handle %s for %s\n", 755 paths[i], name); 756 return; 757 } 758 } 759 760 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n", 761 name); 762 *handle = NULL; 763} 764 765static acpi_status __init tpacpi_acpi_handle_locate_callback(acpi_handle handle, 766 u32 level, void *context, void **return_value) 767{ 768 if (!strcmp(context, "video")) { 769 struct acpi_device *dev = acpi_fetch_acpi_dev(handle); 770 771 if (!dev || strcmp(ACPI_VIDEO_HID, acpi_device_hid(dev))) 772 return AE_OK; 773 } 774 775 *(acpi_handle *)return_value = handle; 776 777 return AE_CTRL_TERMINATE; 778} 779 780static void __init tpacpi_acpi_handle_locate(const char *name, 781 const char *hid, 782 acpi_handle *handle) 783{ 784 acpi_status status; 785 acpi_handle device_found; 786 787 BUG_ON(!name || !handle); 788 vdbg_printk(TPACPI_DBG_INIT, 789 "trying to locate ACPI handle for %s, using HID %s\n", 790 name, hid ? hid : "NULL"); 791 792 memset(&device_found, 0, sizeof(device_found)); 793 status = acpi_get_devices(hid, tpacpi_acpi_handle_locate_callback, 794 (void *)name, &device_found); 795 796 *handle = NULL; 797 798 if (ACPI_SUCCESS(status)) { 799 *handle = device_found; 800 dbg_printk(TPACPI_DBG_INIT, 801 "Found ACPI handle for %s\n", name); 802 } else { 803 vdbg_printk(TPACPI_DBG_INIT, 804 "Could not locate an ACPI handle for %s: %s\n", 805 name, acpi_format_exception(status)); 806 } 807} 808 809static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data) 810{ 811 struct ibm_struct *ibm = data; 812 813 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) 814 return; 815 816 if (!ibm || !ibm->acpi || !ibm->acpi->notify) 817 return; 818 819 ibm->acpi->notify(ibm, event); 820} 821 822static int __init setup_acpi_notify(struct ibm_struct *ibm) 823{ 824 acpi_status status; 825 826 BUG_ON(!ibm->acpi); 827 828 if (!*ibm->acpi->handle) 829 return 0; 830 831 vdbg_printk(TPACPI_DBG_INIT, 832 "setting up ACPI notify for %s\n", ibm->name); 833 834 ibm->acpi->device = acpi_fetch_acpi_dev(*ibm->acpi->handle); 835 if (!ibm->acpi->device) { 836 pr_err("acpi_fetch_acpi_dev(%s) failed\n", ibm->name); 837 return -ENODEV; 838 } 839 840 ibm->acpi->device->driver_data = ibm; 841 scnprintf(acpi_device_class(ibm->acpi->device), 842 sizeof(acpi_device_class(ibm->acpi->device)), 843 "%s/%s", TPACPI_ACPI_EVENT_PREFIX, ibm->name); 844 845 status = acpi_install_notify_handler(*ibm->acpi->handle, 846 ibm->acpi->type, dispatch_acpi_notify, ibm); 847 if (ACPI_FAILURE(status)) { 848 if (status == AE_ALREADY_EXISTS) { 849 pr_notice("another device driver is already handling %s events\n", 850 ibm->name); 851 } else { 852 pr_err("acpi_install_notify_handler(%s) failed: %s\n", 853 ibm->name, acpi_format_exception(status)); 854 } 855 return -ENODEV; 856 } 857 ibm->flags.acpi_notify_installed = 1; 858 return 0; 859} 860 861static int __init tpacpi_device_add(struct acpi_device *device) 862{ 863 return 0; 864} 865 866static int __init register_tpacpi_subdriver(struct ibm_struct *ibm) 867{ 868 int rc; 869 870 dbg_printk(TPACPI_DBG_INIT, 871 "registering %s as an ACPI driver\n", ibm->name); 872 873 BUG_ON(!ibm->acpi); 874 875 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL); 876 if (!ibm->acpi->driver) { 877 pr_err("failed to allocate memory for ibm->acpi->driver\n"); 878 return -ENOMEM; 879 } 880 881 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name); 882 ibm->acpi->driver->ids = ibm->acpi->hid; 883 884 ibm->acpi->driver->ops.add = &tpacpi_device_add; 885 886 rc = acpi_bus_register_driver(ibm->acpi->driver); 887 if (rc < 0) { 888 pr_err("acpi_bus_register_driver(%s) failed: %d\n", 889 ibm->name, rc); 890 kfree(ibm->acpi->driver); 891 ibm->acpi->driver = NULL; 892 } else if (!rc) 893 ibm->flags.acpi_driver_registered = 1; 894 895 return rc; 896} 897 898 899/**************************************************************************** 900 **************************************************************************** 901 * 902 * Procfs Helpers 903 * 904 **************************************************************************** 905 ****************************************************************************/ 906 907static int dispatch_proc_show(struct seq_file *m, void *v) 908{ 909 struct ibm_struct *ibm = m->private; 910 911 if (!ibm || !ibm->read) 912 return -EINVAL; 913 return ibm->read(m); 914} 915 916static int dispatch_proc_open(struct inode *inode, struct file *file) 917{ 918 return single_open(file, dispatch_proc_show, pde_data(inode)); 919} 920 921static ssize_t dispatch_proc_write(struct file *file, 922 const char __user *userbuf, 923 size_t count, loff_t *pos) 924{ 925 struct ibm_struct *ibm = pde_data(file_inode(file)); 926 char *kernbuf; 927 int ret; 928 929 if (!ibm || !ibm->write) 930 return -EINVAL; 931 if (count > PAGE_SIZE - 1) 932 return -EINVAL; 933 934 kernbuf = memdup_user_nul(userbuf, count); 935 if (IS_ERR(kernbuf)) 936 return PTR_ERR(kernbuf); 937 ret = ibm->write(kernbuf); 938 if (ret == 0) 939 ret = count; 940 941 kfree(kernbuf); 942 943 return ret; 944} 945 946static const struct proc_ops dispatch_proc_ops = { 947 .proc_open = dispatch_proc_open, 948 .proc_read = seq_read, 949 .proc_lseek = seq_lseek, 950 .proc_release = single_release, 951 .proc_write = dispatch_proc_write, 952}; 953 954/**************************************************************************** 955 **************************************************************************** 956 * 957 * Device model: input, hwmon and platform 958 * 959 **************************************************************************** 960 ****************************************************************************/ 961 962static struct platform_device *tpacpi_pdev; 963static struct platform_device *tpacpi_sensors_pdev; 964static struct device *tpacpi_hwmon; 965static struct device *tpacpi_pprof; 966static struct input_dev *tpacpi_inputdev; 967static struct mutex tpacpi_inputdev_send_mutex; 968static LIST_HEAD(tpacpi_all_drivers); 969 970#ifdef CONFIG_PM_SLEEP 971static int tpacpi_suspend_handler(struct device *dev) 972{ 973 struct ibm_struct *ibm, *itmp; 974 975 list_for_each_entry_safe(ibm, itmp, 976 &tpacpi_all_drivers, 977 all_drivers) { 978 if (ibm->suspend) 979 (ibm->suspend)(); 980 } 981 982 return 0; 983} 984 985static int tpacpi_resume_handler(struct device *dev) 986{ 987 struct ibm_struct *ibm, *itmp; 988 989 list_for_each_entry_safe(ibm, itmp, 990 &tpacpi_all_drivers, 991 all_drivers) { 992 if (ibm->resume) 993 (ibm->resume)(); 994 } 995 996 return 0; 997} 998#endif 999 1000static SIMPLE_DEV_PM_OPS(tpacpi_pm, 1001 tpacpi_suspend_handler, tpacpi_resume_handler); 1002 1003static void tpacpi_shutdown_handler(struct platform_device *pdev) 1004{ 1005 struct ibm_struct *ibm, *itmp; 1006 1007 list_for_each_entry_safe(ibm, itmp, 1008 &tpacpi_all_drivers, 1009 all_drivers) { 1010 if (ibm->shutdown) 1011 (ibm->shutdown)(); 1012 } 1013} 1014 1015/************************************************************************* 1016 * sysfs support helpers 1017 */ 1018 1019static int parse_strtoul(const char *buf, 1020 unsigned long max, unsigned long *value) 1021{ 1022 char *endp; 1023 1024 *value = simple_strtoul(skip_spaces(buf), &endp, 0); 1025 endp = skip_spaces(endp); 1026 if (*endp || *value > max) 1027 return -EINVAL; 1028 1029 return 0; 1030} 1031 1032static void tpacpi_disable_brightness_delay(void) 1033{ 1034 if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0)) 1035 pr_notice("ACPI backlight control delay disabled\n"); 1036} 1037 1038static void printk_deprecated_attribute(const char * const what, 1039 const char * const details) 1040{ 1041 tpacpi_log_usertask("deprecated sysfs attribute"); 1042 pr_warn("WARNING: sysfs attribute %s is deprecated and will be removed. %s\n", 1043 what, details); 1044} 1045 1046/************************************************************************* 1047 * rfkill and radio control support helpers 1048 */ 1049 1050/* 1051 * ThinkPad-ACPI firmware handling model: 1052 * 1053 * WLSW (master wireless switch) is event-driven, and is common to all 1054 * firmware-controlled radios. It cannot be controlled, just monitored, 1055 * as expected. It overrides all radio state in firmware 1056 * 1057 * The kernel, a masked-off hotkey, and WLSW can change the radio state 1058 * (TODO: verify how WLSW interacts with the returned radio state). 1059 * 1060 * The only time there are shadow radio state changes, is when 1061 * masked-off hotkeys are used. 1062 */ 1063 1064/* 1065 * Internal driver API for radio state: 1066 * 1067 * int: < 0 = error, otherwise enum tpacpi_rfkill_state 1068 * bool: true means radio blocked (off) 1069 */ 1070enum tpacpi_rfkill_state { 1071 TPACPI_RFK_RADIO_OFF = 0, 1072 TPACPI_RFK_RADIO_ON 1073}; 1074 1075/* rfkill switches */ 1076enum tpacpi_rfk_id { 1077 TPACPI_RFK_BLUETOOTH_SW_ID = 0, 1078 TPACPI_RFK_WWAN_SW_ID, 1079 TPACPI_RFK_UWB_SW_ID, 1080 TPACPI_RFK_SW_MAX 1081}; 1082 1083static const char *tpacpi_rfkill_names[] = { 1084 [TPACPI_RFK_BLUETOOTH_SW_ID] = "bluetooth", 1085 [TPACPI_RFK_WWAN_SW_ID] = "wwan", 1086 [TPACPI_RFK_UWB_SW_ID] = "uwb", 1087 [TPACPI_RFK_SW_MAX] = NULL 1088}; 1089 1090/* ThinkPad-ACPI rfkill subdriver */ 1091struct tpacpi_rfk { 1092 struct rfkill *rfkill; 1093 enum tpacpi_rfk_id id; 1094 const struct tpacpi_rfk_ops *ops; 1095}; 1096 1097struct tpacpi_rfk_ops { 1098 /* firmware interface */ 1099 int (*get_status)(void); 1100 int (*set_status)(const enum tpacpi_rfkill_state); 1101}; 1102 1103static struct tpacpi_rfk *tpacpi_rfkill_switches[TPACPI_RFK_SW_MAX]; 1104 1105/* Query FW and update rfkill sw state for a given rfkill switch */ 1106static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk *tp_rfk) 1107{ 1108 int status; 1109 1110 if (!tp_rfk) 1111 return -ENODEV; 1112 1113 status = (tp_rfk->ops->get_status)(); 1114 if (status < 0) 1115 return status; 1116 1117 rfkill_set_sw_state(tp_rfk->rfkill, 1118 (status == TPACPI_RFK_RADIO_OFF)); 1119 1120 return status; 1121} 1122 1123/* 1124 * Sync the HW-blocking state of all rfkill switches, 1125 * do notice it causes the rfkill core to schedule uevents 1126 */ 1127static void tpacpi_rfk_update_hwblock_state(bool blocked) 1128{ 1129 unsigned int i; 1130 struct tpacpi_rfk *tp_rfk; 1131 1132 for (i = 0; i < TPACPI_RFK_SW_MAX; i++) { 1133 tp_rfk = tpacpi_rfkill_switches[i]; 1134 if (tp_rfk) { 1135 if (rfkill_set_hw_state(tp_rfk->rfkill, 1136 blocked)) { 1137 /* ignore -- we track sw block */ 1138 } 1139 } 1140 } 1141} 1142 1143/* Call to get the WLSW state from the firmware */ 1144static int hotkey_get_wlsw(void); 1145 1146/* Call to query WLSW state and update all rfkill switches */ 1147static bool tpacpi_rfk_check_hwblock_state(void) 1148{ 1149 int res = hotkey_get_wlsw(); 1150 int hw_blocked; 1151 1152 /* When unknown or unsupported, we have to assume it is unblocked */ 1153 if (res < 0) 1154 return false; 1155 1156 hw_blocked = (res == TPACPI_RFK_RADIO_OFF); 1157 tpacpi_rfk_update_hwblock_state(hw_blocked); 1158 1159 return hw_blocked; 1160} 1161 1162static int tpacpi_rfk_hook_set_block(void *data, bool blocked) 1163{ 1164 struct tpacpi_rfk *tp_rfk = data; 1165 int res; 1166 1167 dbg_printk(TPACPI_DBG_RFKILL, 1168 "request to change radio state to %s\n", 1169 blocked ? "blocked" : "unblocked"); 1170 1171 /* try to set radio state */ 1172 res = (tp_rfk->ops->set_status)(blocked ? 1173 TPACPI_RFK_RADIO_OFF : TPACPI_RFK_RADIO_ON); 1174 1175 /* and update the rfkill core with whatever the FW really did */ 1176 tpacpi_rfk_update_swstate(tp_rfk); 1177 1178 return (res < 0) ? res : 0; 1179} 1180 1181static const struct rfkill_ops tpacpi_rfk_rfkill_ops = { 1182 .set_block = tpacpi_rfk_hook_set_block, 1183}; 1184 1185static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id, 1186 const struct tpacpi_rfk_ops *tp_rfkops, 1187 const enum rfkill_type rfktype, 1188 const char *name, 1189 const bool set_default) 1190{ 1191 struct tpacpi_rfk *atp_rfk; 1192 int res; 1193 bool sw_state = false; 1194 bool hw_state; 1195 int sw_status; 1196 1197 BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]); 1198 1199 atp_rfk = kzalloc(sizeof(struct tpacpi_rfk), GFP_KERNEL); 1200 if (atp_rfk) 1201 atp_rfk->rfkill = rfkill_alloc(name, 1202 &tpacpi_pdev->dev, 1203 rfktype, 1204 &tpacpi_rfk_rfkill_ops, 1205 atp_rfk); 1206 if (!atp_rfk || !atp_rfk->rfkill) { 1207 pr_err("failed to allocate memory for rfkill class\n"); 1208 kfree(atp_rfk); 1209 return -ENOMEM; 1210 } 1211 1212 atp_rfk->id = id; 1213 atp_rfk->ops = tp_rfkops; 1214 1215 sw_status = (tp_rfkops->get_status)(); 1216 if (sw_status < 0) { 1217 pr_err("failed to read initial state for %s, error %d\n", 1218 name, sw_status); 1219 } else { 1220 sw_state = (sw_status == TPACPI_RFK_RADIO_OFF); 1221 if (set_default) { 1222 /* try to keep the initial state, since we ask the 1223 * firmware to preserve it across S5 in NVRAM */ 1224 rfkill_init_sw_state(atp_rfk->rfkill, sw_state); 1225 } 1226 } 1227 hw_state = tpacpi_rfk_check_hwblock_state(); 1228 rfkill_set_hw_state(atp_rfk->rfkill, hw_state); 1229 1230 res = rfkill_register(atp_rfk->rfkill); 1231 if (res < 0) { 1232 pr_err("failed to register %s rfkill switch: %d\n", name, res); 1233 rfkill_destroy(atp_rfk->rfkill); 1234 kfree(atp_rfk); 1235 return res; 1236 } 1237 1238 tpacpi_rfkill_switches[id] = atp_rfk; 1239 1240 pr_info("rfkill switch %s: radio is %sblocked\n", 1241 name, (sw_state || hw_state) ? "" : "un"); 1242 return 0; 1243} 1244 1245static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id) 1246{ 1247 struct tpacpi_rfk *tp_rfk; 1248 1249 BUG_ON(id >= TPACPI_RFK_SW_MAX); 1250 1251 tp_rfk = tpacpi_rfkill_switches[id]; 1252 if (tp_rfk) { 1253 rfkill_unregister(tp_rfk->rfkill); 1254 rfkill_destroy(tp_rfk->rfkill); 1255 tpacpi_rfkill_switches[id] = NULL; 1256 kfree(tp_rfk); 1257 } 1258} 1259 1260static void printk_deprecated_rfkill_attribute(const char * const what) 1261{ 1262 printk_deprecated_attribute(what, 1263 "Please switch to generic rfkill before year 2010"); 1264} 1265 1266/* sysfs <radio> enable ------------------------------------------------ */ 1267static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id, 1268 struct device_attribute *attr, 1269 char *buf) 1270{ 1271 int status; 1272 1273 printk_deprecated_rfkill_attribute(attr->attr.name); 1274 1275 /* This is in the ABI... */ 1276 if (tpacpi_rfk_check_hwblock_state()) { 1277 status = TPACPI_RFK_RADIO_OFF; 1278 } else { 1279 status = tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1280 if (status < 0) 1281 return status; 1282 } 1283 1284 return sysfs_emit(buf, "%d\n", 1285 (status == TPACPI_RFK_RADIO_ON) ? 1 : 0); 1286} 1287 1288static ssize_t tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id, 1289 struct device_attribute *attr, 1290 const char *buf, size_t count) 1291{ 1292 unsigned long t; 1293 int res; 1294 1295 printk_deprecated_rfkill_attribute(attr->attr.name); 1296 1297 if (parse_strtoul(buf, 1, &t)) 1298 return -EINVAL; 1299 1300 tpacpi_disclose_usertask(attr->attr.name, "set to %ld\n", t); 1301 1302 /* This is in the ABI... */ 1303 if (tpacpi_rfk_check_hwblock_state() && !!t) 1304 return -EPERM; 1305 1306 res = tpacpi_rfkill_switches[id]->ops->set_status((!!t) ? 1307 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF); 1308 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1309 1310 return (res < 0) ? res : count; 1311} 1312 1313/* procfs -------------------------------------------------------------- */ 1314static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id, struct seq_file *m) 1315{ 1316 if (id >= TPACPI_RFK_SW_MAX) 1317 seq_printf(m, "status:\t\tnot supported\n"); 1318 else { 1319 int status; 1320 1321 /* This is in the ABI... */ 1322 if (tpacpi_rfk_check_hwblock_state()) { 1323 status = TPACPI_RFK_RADIO_OFF; 1324 } else { 1325 status = tpacpi_rfk_update_swstate( 1326 tpacpi_rfkill_switches[id]); 1327 if (status < 0) 1328 return status; 1329 } 1330 1331 seq_printf(m, "status:\t\t%s\n", str_enabled_disabled(status == TPACPI_RFK_RADIO_ON)); 1332 seq_printf(m, "commands:\tenable, disable\n"); 1333 } 1334 1335 return 0; 1336} 1337 1338static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf) 1339{ 1340 char *cmd; 1341 int status = -1; 1342 int res = 0; 1343 1344 if (id >= TPACPI_RFK_SW_MAX) 1345 return -ENODEV; 1346 1347 while ((cmd = strsep(&buf, ","))) { 1348 if (strstarts(cmd, "enable")) 1349 status = TPACPI_RFK_RADIO_ON; 1350 else if (strstarts(cmd, "disable")) 1351 status = TPACPI_RFK_RADIO_OFF; 1352 else 1353 return -EINVAL; 1354 } 1355 1356 if (status != -1) { 1357 tpacpi_disclose_usertask("procfs", "attempt to %s %s\n", 1358 str_enable_disable(status == TPACPI_RFK_RADIO_ON), 1359 tpacpi_rfkill_names[id]); 1360 res = (tpacpi_rfkill_switches[id]->ops->set_status)(status); 1361 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1362 } 1363 1364 return res; 1365} 1366 1367/************************************************************************* 1368 * thinkpad-acpi driver attributes 1369 */ 1370 1371/* interface_version --------------------------------------------------- */ 1372static ssize_t interface_version_show(struct device_driver *drv, char *buf) 1373{ 1374 return sysfs_emit(buf, "0x%08x\n", TPACPI_SYSFS_VERSION); 1375} 1376static DRIVER_ATTR_RO(interface_version); 1377 1378/* debug_level --------------------------------------------------------- */ 1379static ssize_t debug_level_show(struct device_driver *drv, char *buf) 1380{ 1381 return sysfs_emit(buf, "0x%04x\n", dbg_level); 1382} 1383 1384static ssize_t debug_level_store(struct device_driver *drv, const char *buf, 1385 size_t count) 1386{ 1387 unsigned long t; 1388 1389 if (parse_strtoul(buf, 0xffff, &t)) 1390 return -EINVAL; 1391 1392 dbg_level = t; 1393 1394 return count; 1395} 1396static DRIVER_ATTR_RW(debug_level); 1397 1398/* version ------------------------------------------------------------- */ 1399static ssize_t version_show(struct device_driver *drv, char *buf) 1400{ 1401 return sysfs_emit(buf, "%s v%s\n", 1402 TPACPI_DESC, TPACPI_VERSION); 1403} 1404static DRIVER_ATTR_RO(version); 1405 1406/* --------------------------------------------------------------------- */ 1407 1408#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 1409 1410/* wlsw_emulstate ------------------------------------------------------ */ 1411static ssize_t wlsw_emulstate_show(struct device_driver *drv, char *buf) 1412{ 1413 return sysfs_emit(buf, "%d\n", !!tpacpi_wlsw_emulstate); 1414} 1415 1416static ssize_t wlsw_emulstate_store(struct device_driver *drv, const char *buf, 1417 size_t count) 1418{ 1419 unsigned long t; 1420 1421 if (parse_strtoul(buf, 1, &t)) 1422 return -EINVAL; 1423 1424 if (tpacpi_wlsw_emulstate != !!t) { 1425 tpacpi_wlsw_emulstate = !!t; 1426 tpacpi_rfk_update_hwblock_state(!t); /* negative logic */ 1427 } 1428 1429 return count; 1430} 1431static DRIVER_ATTR_RW(wlsw_emulstate); 1432 1433/* bluetooth_emulstate ------------------------------------------------- */ 1434static ssize_t bluetooth_emulstate_show(struct device_driver *drv, char *buf) 1435{ 1436 return sysfs_emit(buf, "%d\n", !!tpacpi_bluetooth_emulstate); 1437} 1438 1439static ssize_t bluetooth_emulstate_store(struct device_driver *drv, 1440 const char *buf, size_t count) 1441{ 1442 unsigned long t; 1443 1444 if (parse_strtoul(buf, 1, &t)) 1445 return -EINVAL; 1446 1447 tpacpi_bluetooth_emulstate = !!t; 1448 1449 return count; 1450} 1451static DRIVER_ATTR_RW(bluetooth_emulstate); 1452 1453/* wwan_emulstate ------------------------------------------------- */ 1454static ssize_t wwan_emulstate_show(struct device_driver *drv, char *buf) 1455{ 1456 return sysfs_emit(buf, "%d\n", !!tpacpi_wwan_emulstate); 1457} 1458 1459static ssize_t wwan_emulstate_store(struct device_driver *drv, const char *buf, 1460 size_t count) 1461{ 1462 unsigned long t; 1463 1464 if (parse_strtoul(buf, 1, &t)) 1465 return -EINVAL; 1466 1467 tpacpi_wwan_emulstate = !!t; 1468 1469 return count; 1470} 1471static DRIVER_ATTR_RW(wwan_emulstate); 1472 1473/* uwb_emulstate ------------------------------------------------- */ 1474static ssize_t uwb_emulstate_show(struct device_driver *drv, char *buf) 1475{ 1476 return sysfs_emit(buf, "%d\n", !!tpacpi_uwb_emulstate); 1477} 1478 1479static ssize_t uwb_emulstate_store(struct device_driver *drv, const char *buf, 1480 size_t count) 1481{ 1482 unsigned long t; 1483 1484 if (parse_strtoul(buf, 1, &t)) 1485 return -EINVAL; 1486 1487 tpacpi_uwb_emulstate = !!t; 1488 1489 return count; 1490} 1491static DRIVER_ATTR_RW(uwb_emulstate); 1492#endif 1493 1494/************************************************************************* 1495 * Firmware Data 1496 */ 1497 1498/* 1499 * Table of recommended minimum BIOS versions 1500 * 1501 * Reasons for listing: 1502 * 1. Stable BIOS, listed because the unknown amount of 1503 * bugs and bad ACPI behaviour on older versions 1504 * 1505 * 2. BIOS or EC fw with known bugs that trigger on Linux 1506 * 1507 * 3. BIOS with known reduced functionality in older versions 1508 * 1509 * We recommend the latest BIOS and EC version. 1510 * We only support the latest BIOS and EC fw version as a rule. 1511 * 1512 * Sources: IBM ThinkPad Public Web Documents (update changelogs), 1513 * Information from users in ThinkWiki 1514 * 1515 * WARNING: we use this table also to detect that the machine is 1516 * a ThinkPad in some cases, so don't remove entries lightly. 1517 */ 1518 1519#define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \ 1520 { .vendor = (__v), \ 1521 .bios = TPID(__id1, __id2), \ 1522 .ec = TPACPI_MATCH_ANY, \ 1523 .quirks = TPACPI_MATCH_ANY_VERSION << 16 \ 1524 | TPVER(__bv1, __bv2) } 1525 1526#define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \ 1527 __eid, __ev1, __ev2) \ 1528 { .vendor = (__v), \ 1529 .bios = TPID(__bid1, __bid2), \ 1530 .ec = __eid, \ 1531 .quirks = TPVER(__ev1, __ev2) << 16 \ 1532 | TPVER(__bv1, __bv2) } 1533 1534#define TPV_QI0(__id1, __id2, __bv1, __bv2) \ 1535 TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2) 1536 1537/* Outdated IBM BIOSes often lack the EC id string */ 1538#define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \ 1539 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \ 1540 __bv1, __bv2, TPID(__id1, __id2), \ 1541 __ev1, __ev2), \ 1542 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \ 1543 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \ 1544 __ev1, __ev2) 1545 1546/* Outdated IBM BIOSes often lack the EC id string */ 1547#define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \ 1548 __eid1, __eid2, __ev1, __ev2) \ 1549 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \ 1550 __bv1, __bv2, TPID(__eid1, __eid2), \ 1551 __ev1, __ev2), \ 1552 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \ 1553 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \ 1554 __ev1, __ev2) 1555 1556#define TPV_QL0(__id1, __id2, __bv1, __bv2) \ 1557 TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2) 1558 1559#define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \ 1560 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \ 1561 __bv1, __bv2, TPID(__id1, __id2), \ 1562 __ev1, __ev2) 1563 1564#define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \ 1565 __eid1, __eid2, __ev1, __ev2) \ 1566 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \ 1567 __bv1, __bv2, TPID(__eid1, __eid2), \ 1568 __ev1, __ev2) 1569 1570static const struct tpacpi_quirk tpacpi_bios_version_qtable[] __initconst = { 1571 /* Numeric models ------------------ */ 1572 /* FW MODEL BIOS VERS */ 1573 TPV_QI0('I', 'M', '6', '5'), /* 570 */ 1574 TPV_QI0('I', 'U', '2', '6'), /* 570E */ 1575 TPV_QI0('I', 'B', '5', '4'), /* 600 */ 1576 TPV_QI0('I', 'H', '4', '7'), /* 600E */ 1577 TPV_QI0('I', 'N', '3', '6'), /* 600E */ 1578 TPV_QI0('I', 'T', '5', '5'), /* 600X */ 1579 TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */ 1580 TPV_QI0('I', 'I', '4', '2'), /* 770X */ 1581 TPV_QI0('I', 'O', '2', '3'), /* 770Z */ 1582 1583 /* A-series ------------------------- */ 1584 /* FW MODEL BIOS VERS EC VERS */ 1585 TPV_QI0('I', 'W', '5', '9'), /* A20m */ 1586 TPV_QI0('I', 'V', '6', '9'), /* A20p */ 1587 TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */ 1588 TPV_QI0('K', 'U', '3', '6'), /* A21e */ 1589 TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */ 1590 TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */ 1591 TPV_QI0('1', 'B', '1', '7'), /* A22e */ 1592 TPV_QI0('1', '3', '2', '0'), /* A22m */ 1593 TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */ 1594 TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */ 1595 TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */ 1596 1597 /* G-series ------------------------- */ 1598 /* FW MODEL BIOS VERS */ 1599 TPV_QI0('1', 'T', 'A', '6'), /* G40 */ 1600 TPV_QI0('1', 'X', '5', '7'), /* G41 */ 1601 1602 /* R-series, T-series --------------- */ 1603 /* FW MODEL BIOS VERS EC VERS */ 1604 TPV_QI0('1', 'C', 'F', '0'), /* R30 */ 1605 TPV_QI0('1', 'F', 'F', '1'), /* R31 */ 1606 TPV_QI0('1', 'M', '9', '7'), /* R32 */ 1607 TPV_QI0('1', 'O', '6', '1'), /* R40 */ 1608 TPV_QI0('1', 'P', '6', '5'), /* R40 */ 1609 TPV_QI0('1', 'S', '7', '0'), /* R40e */ 1610 TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51, 1611 T40/p, T41/p, T42/p (1) */ 1612 TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */ 1613 TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */ 1614 TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */ 1615 TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */ 1616 1617 TPV_QI0('I', 'Y', '6', '1'), /* T20 */ 1618 TPV_QI0('K', 'Z', '3', '4'), /* T21 */ 1619 TPV_QI0('1', '6', '3', '2'), /* T22 */ 1620 TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */ 1621 TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */ 1622 TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */ 1623 1624 TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */ 1625 TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */ 1626 TPV_QL1('7', 'E', 'D', '0', '1', '5'), /* R60e, R60i */ 1627 1628 /* BIOS FW BIOS VERS EC FW EC VERS */ 1629 TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */ 1630 TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */ 1631 1632 /* X-series ------------------------- */ 1633 /* FW MODEL BIOS VERS EC VERS */ 1634 TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */ 1635 TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */ 1636 TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */ 1637 TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */ 1638 TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */ 1639 TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */ 1640 TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */ 1641 1642 TPV_QL1('7', 'B', 'D', '7', '4', '0'), /* X60/s */ 1643 TPV_QL1('7', 'J', '3', '0', '1', '3'), /* X60t */ 1644 1645 /* (0) - older versions lack DMI EC fw string and functionality */ 1646 /* (1) - older versions known to lack functionality */ 1647}; 1648 1649#undef TPV_QL1 1650#undef TPV_QL0 1651#undef TPV_QI2 1652#undef TPV_QI1 1653#undef TPV_QI0 1654#undef TPV_Q_X 1655#undef TPV_Q 1656 1657static void __init tpacpi_check_outdated_fw(void) 1658{ 1659 unsigned long fwvers; 1660 u16 ec_version, bios_version; 1661 1662 fwvers = tpacpi_check_quirks(tpacpi_bios_version_qtable, 1663 ARRAY_SIZE(tpacpi_bios_version_qtable)); 1664 1665 if (!fwvers) 1666 return; 1667 1668 bios_version = fwvers & 0xffffU; 1669 ec_version = (fwvers >> 16) & 0xffffU; 1670 1671 /* note that unknown versions are set to 0x0000 and we use that */ 1672 if ((bios_version > thinkpad_id.bios_release) || 1673 (ec_version > thinkpad_id.ec_release && 1674 ec_version != TPACPI_MATCH_ANY_VERSION)) { 1675 /* 1676 * The changelogs would let us track down the exact 1677 * reason, but it is just too much of a pain to track 1678 * it. We only list BIOSes that are either really 1679 * broken, or really stable to begin with, so it is 1680 * best if the user upgrades the firmware anyway. 1681 */ 1682 pr_warn("WARNING: Outdated ThinkPad BIOS/EC firmware\n"); 1683 pr_warn("WARNING: This firmware may be missing critical bug fixes and/or important features\n"); 1684 } 1685} 1686 1687static bool __init tpacpi_is_fw_known(void) 1688{ 1689 return tpacpi_check_quirks(tpacpi_bios_version_qtable, 1690 ARRAY_SIZE(tpacpi_bios_version_qtable)) != 0; 1691} 1692 1693/**************************************************************************** 1694 **************************************************************************** 1695 * 1696 * Subdrivers 1697 * 1698 **************************************************************************** 1699 ****************************************************************************/ 1700 1701/************************************************************************* 1702 * thinkpad-acpi metadata subdriver 1703 */ 1704 1705static int thinkpad_acpi_driver_read(struct seq_file *m) 1706{ 1707 seq_printf(m, "driver:\t\t%s\n", TPACPI_DESC); 1708 seq_printf(m, "version:\t%s\n", TPACPI_VERSION); 1709 return 0; 1710} 1711 1712static struct ibm_struct thinkpad_acpi_driver_data = { 1713 .name = "driver", 1714 .read = thinkpad_acpi_driver_read, 1715}; 1716 1717/************************************************************************* 1718 * Hotkey subdriver 1719 */ 1720 1721/* 1722 * ThinkPad firmware event model 1723 * 1724 * The ThinkPad firmware has two main event interfaces: normal ACPI 1725 * notifications (which follow the ACPI standard), and a private event 1726 * interface. 1727 * 1728 * The private event interface also issues events for the hotkeys. As 1729 * the driver gained features, the event handling code ended up being 1730 * built around the hotkey subdriver. This will need to be refactored 1731 * to a more formal event API eventually. 1732 * 1733 * Some "hotkeys" are actually supposed to be used as event reports, 1734 * such as "brightness has changed", "volume has changed", depending on 1735 * the ThinkPad model and how the firmware is operating. 1736 * 1737 * Unlike other classes, hotkey-class events have mask/unmask control on 1738 * non-ancient firmware. However, how it behaves changes a lot with the 1739 * firmware model and version. 1740 */ 1741 1742enum { /* hot key scan codes (derived from ACPI DSDT) */ 1743 TP_ACPI_HOTKEYSCAN_FNF1 = 0, 1744 TP_ACPI_HOTKEYSCAN_FNF2, 1745 TP_ACPI_HOTKEYSCAN_FNF3, 1746 TP_ACPI_HOTKEYSCAN_FNF4, 1747 TP_ACPI_HOTKEYSCAN_FNF5, 1748 TP_ACPI_HOTKEYSCAN_FNF6, 1749 TP_ACPI_HOTKEYSCAN_FNF7, 1750 TP_ACPI_HOTKEYSCAN_FNF8, 1751 TP_ACPI_HOTKEYSCAN_FNF9, 1752 TP_ACPI_HOTKEYSCAN_FNF10, 1753 TP_ACPI_HOTKEYSCAN_FNF11, 1754 TP_ACPI_HOTKEYSCAN_FNF12, 1755 TP_ACPI_HOTKEYSCAN_FNBACKSPACE, 1756 TP_ACPI_HOTKEYSCAN_FNINSERT, 1757 TP_ACPI_HOTKEYSCAN_FNDELETE, 1758 TP_ACPI_HOTKEYSCAN_FNHOME, 1759 TP_ACPI_HOTKEYSCAN_FNEND, 1760 TP_ACPI_HOTKEYSCAN_FNPAGEUP, 1761 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN, 1762 TP_ACPI_HOTKEYSCAN_FNSPACE, 1763 TP_ACPI_HOTKEYSCAN_VOLUMEUP, 1764 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, 1765 TP_ACPI_HOTKEYSCAN_MUTE, 1766 TP_ACPI_HOTKEYSCAN_THINKPAD, 1767 TP_ACPI_HOTKEYSCAN_UNK1, 1768 TP_ACPI_HOTKEYSCAN_UNK2, 1769 TP_ACPI_HOTKEYSCAN_MICMUTE, 1770 TP_ACPI_HOTKEYSCAN_UNK4, 1771 TP_ACPI_HOTKEYSCAN_CONFIG, 1772 TP_ACPI_HOTKEYSCAN_SEARCH, 1773 TP_ACPI_HOTKEYSCAN_SCALE, 1774 TP_ACPI_HOTKEYSCAN_FILE, 1775 1776 /* Adaptive keyboard keycodes */ 1777 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START, /* 32 / 0x20 */ 1778 TP_ACPI_HOTKEYSCAN_MUTE2 = TP_ACPI_HOTKEYSCAN_ADAPTIVE_START, 1779 TP_ACPI_HOTKEYSCAN_BRIGHTNESS_ZERO, 1780 TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL, 1781 TP_ACPI_HOTKEYSCAN_CLOUD, 1782 TP_ACPI_HOTKEYSCAN_UNK9, 1783 TP_ACPI_HOTKEYSCAN_VOICE, 1784 TP_ACPI_HOTKEYSCAN_UNK10, 1785 TP_ACPI_HOTKEYSCAN_GESTURES, 1786 TP_ACPI_HOTKEYSCAN_UNK11, 1787 TP_ACPI_HOTKEYSCAN_UNK12, 1788 TP_ACPI_HOTKEYSCAN_UNK13, 1789 TP_ACPI_HOTKEYSCAN_CONFIG2, 1790 TP_ACPI_HOTKEYSCAN_NEW_TAB, 1791 TP_ACPI_HOTKEYSCAN_RELOAD, 1792 TP_ACPI_HOTKEYSCAN_BACK, 1793 TP_ACPI_HOTKEYSCAN_MIC_DOWN, 1794 TP_ACPI_HOTKEYSCAN_MIC_UP, 1795 TP_ACPI_HOTKEYSCAN_MIC_CANCELLATION, 1796 TP_ACPI_HOTKEYSCAN_CAMERA_MODE, 1797 TP_ACPI_HOTKEYSCAN_ROTATE_DISPLAY, 1798 1799 /* Lenovo extended keymap, starting at 0x1300 */ 1800 TP_ACPI_HOTKEYSCAN_EXTENDED_START, /* 52 / 0x34 */ 1801 /* first new observed key (star, favorites) is 0x1311 */ 1802 TP_ACPI_HOTKEYSCAN_STAR = 69, 1803 TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL2, 1804 TP_ACPI_HOTKEYSCAN_CALCULATOR, 1805 TP_ACPI_HOTKEYSCAN_BLUETOOTH, 1806 TP_ACPI_HOTKEYSCAN_KEYBOARD, 1807 TP_ACPI_HOTKEYSCAN_FN_RIGHT_SHIFT, /* Used by "Lenovo Quick Clean" */ 1808 TP_ACPI_HOTKEYSCAN_NOTIFICATION_CENTER, 1809 TP_ACPI_HOTKEYSCAN_PICKUP_PHONE, 1810 TP_ACPI_HOTKEYSCAN_HANGUP_PHONE, 1811}; 1812 1813enum { /* Keys/events available through NVRAM polling */ 1814 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U, 1815 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U, 1816}; 1817 1818enum { /* Positions of some of the keys in hotkey masks */ 1819 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7, 1820 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8, 1821 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12, 1822 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME, 1823 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND, 1824 TP_ACPI_HKEY_KBD_LIGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP, 1825 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE, 1826 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP, 1827 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, 1828 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE, 1829 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD, 1830}; 1831 1832enum { /* NVRAM to ACPI HKEY group map */ 1833 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK | 1834 TP_ACPI_HKEY_ZOOM_MASK | 1835 TP_ACPI_HKEY_DISPSWTCH_MASK | 1836 TP_ACPI_HKEY_HIBERNATE_MASK, 1837 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK | 1838 TP_ACPI_HKEY_BRGHTDWN_MASK, 1839 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK | 1840 TP_ACPI_HKEY_VOLDWN_MASK | 1841 TP_ACPI_HKEY_MUTE_MASK, 1842}; 1843 1844#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 1845struct tp_nvram_state { 1846 u16 thinkpad_toggle:1; 1847 u16 zoom_toggle:1; 1848 u16 display_toggle:1; 1849 u16 thinklight_toggle:1; 1850 u16 hibernate_toggle:1; 1851 u16 displayexp_toggle:1; 1852 u16 display_state:1; 1853 u16 brightness_toggle:1; 1854 u16 volume_toggle:1; 1855 u16 mute:1; 1856 1857 u8 brightness_level; 1858 u8 volume_level; 1859}; 1860 1861/* kthread for the hotkey poller */ 1862static struct task_struct *tpacpi_hotkey_task; 1863 1864/* 1865 * Acquire mutex to write poller control variables as an 1866 * atomic block. 1867 * 1868 * Increment hotkey_config_change when changing them if you 1869 * want the kthread to forget old state. 1870 * 1871 * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END 1872 */ 1873static struct mutex hotkey_thread_data_mutex; 1874static unsigned int hotkey_config_change; 1875 1876/* 1877 * hotkey poller control variables 1878 * 1879 * Must be atomic or readers will also need to acquire mutex 1880 * 1881 * HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END 1882 * should be used only when the changes need to be taken as 1883 * a block, OR when one needs to force the kthread to forget 1884 * old state. 1885 */ 1886static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */ 1887static unsigned int hotkey_poll_freq = 10; /* Hz */ 1888 1889#define HOTKEY_CONFIG_CRITICAL_START \ 1890 do { \ 1891 mutex_lock(&hotkey_thread_data_mutex); \ 1892 hotkey_config_change++; \ 1893 } while (0); 1894#define HOTKEY_CONFIG_CRITICAL_END \ 1895 mutex_unlock(&hotkey_thread_data_mutex); 1896 1897#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 1898 1899#define hotkey_source_mask 0U 1900#define HOTKEY_CONFIG_CRITICAL_START 1901#define HOTKEY_CONFIG_CRITICAL_END 1902 1903#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 1904 1905static struct mutex hotkey_mutex; 1906 1907static enum { /* Reasons for waking up */ 1908 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */ 1909 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */ 1910 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */ 1911} hotkey_wakeup_reason; 1912 1913static int hotkey_autosleep_ack; 1914 1915static u32 hotkey_orig_mask; /* events the BIOS had enabled */ 1916static u32 hotkey_all_mask; /* all events supported in fw */ 1917static u32 hotkey_adaptive_all_mask; /* all adaptive events supported in fw */ 1918static u32 hotkey_reserved_mask; /* events better left disabled */ 1919static u32 hotkey_driver_mask; /* events needed by the driver */ 1920static u32 hotkey_user_mask; /* events visible to userspace */ 1921static u32 hotkey_acpi_mask; /* events enabled in firmware */ 1922 1923static bool tpacpi_driver_event(const unsigned int hkey_event); 1924static void hotkey_poll_setup(const bool may_warn); 1925 1926/* HKEY.MHKG() return bits */ 1927#define TP_HOTKEY_TABLET_MASK (1 << 3) 1928enum { 1929 TP_ACPI_MULTI_MODE_INVALID = 0, 1930 TP_ACPI_MULTI_MODE_UNKNOWN = 1 << 0, 1931 TP_ACPI_MULTI_MODE_LAPTOP = 1 << 1, 1932 TP_ACPI_MULTI_MODE_TABLET = 1 << 2, 1933 TP_ACPI_MULTI_MODE_FLAT = 1 << 3, 1934 TP_ACPI_MULTI_MODE_STAND = 1 << 4, 1935 TP_ACPI_MULTI_MODE_TENT = 1 << 5, 1936 TP_ACPI_MULTI_MODE_STAND_TENT = 1 << 6, 1937}; 1938 1939enum { 1940 /* The following modes are considered tablet mode for the purpose of 1941 * reporting the status to userspace. i.e. in all these modes it makes 1942 * sense to disable the laptop input devices such as touchpad and 1943 * keyboard. 1944 */ 1945 TP_ACPI_MULTI_MODE_TABLET_LIKE = TP_ACPI_MULTI_MODE_TABLET | 1946 TP_ACPI_MULTI_MODE_STAND | 1947 TP_ACPI_MULTI_MODE_TENT | 1948 TP_ACPI_MULTI_MODE_STAND_TENT, 1949}; 1950 1951static int hotkey_get_wlsw(void) 1952{ 1953 int status; 1954 1955 if (!tp_features.hotkey_wlsw) 1956 return -ENODEV; 1957 1958#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 1959 if (dbg_wlswemul) 1960 return (tpacpi_wlsw_emulstate) ? 1961 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 1962#endif 1963 1964 if (!acpi_evalf(hkey_handle, &status, "WLSW", "d")) 1965 return -EIO; 1966 1967 return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 1968} 1969 1970static int hotkey_gmms_get_tablet_mode(int s, int *has_tablet_mode) 1971{ 1972 int type = (s >> 16) & 0xffff; 1973 int value = s & 0xffff; 1974 int mode = TP_ACPI_MULTI_MODE_INVALID; 1975 int valid_modes = 0; 1976 1977 if (has_tablet_mode) 1978 *has_tablet_mode = 0; 1979 1980 switch (type) { 1981 case 1: 1982 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 1983 TP_ACPI_MULTI_MODE_TABLET | 1984 TP_ACPI_MULTI_MODE_STAND_TENT; 1985 break; 1986 case 2: 1987 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 1988 TP_ACPI_MULTI_MODE_FLAT | 1989 TP_ACPI_MULTI_MODE_TABLET | 1990 TP_ACPI_MULTI_MODE_STAND | 1991 TP_ACPI_MULTI_MODE_TENT; 1992 break; 1993 case 3: 1994 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 1995 TP_ACPI_MULTI_MODE_FLAT; 1996 break; 1997 case 4: 1998 case 5: 1999 /* In mode 4, FLAT is not specified as a valid mode. However, 2000 * it can be seen at least on the X1 Yoga 2nd Generation. 2001 */ 2002 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 2003 TP_ACPI_MULTI_MODE_FLAT | 2004 TP_ACPI_MULTI_MODE_TABLET | 2005 TP_ACPI_MULTI_MODE_STAND | 2006 TP_ACPI_MULTI_MODE_TENT; 2007 break; 2008 default: 2009 pr_err("Unknown multi mode status type %d with value 0x%04X, please report this to %s\n", 2010 type, value, TPACPI_MAIL); 2011 return 0; 2012 } 2013 2014 if (has_tablet_mode && (valid_modes & TP_ACPI_MULTI_MODE_TABLET_LIKE)) 2015 *has_tablet_mode = 1; 2016 2017 switch (value) { 2018 case 1: 2019 mode = TP_ACPI_MULTI_MODE_LAPTOP; 2020 break; 2021 case 2: 2022 mode = TP_ACPI_MULTI_MODE_FLAT; 2023 break; 2024 case 3: 2025 mode = TP_ACPI_MULTI_MODE_TABLET; 2026 break; 2027 case 4: 2028 if (type == 1) 2029 mode = TP_ACPI_MULTI_MODE_STAND_TENT; 2030 else 2031 mode = TP_ACPI_MULTI_MODE_STAND; 2032 break; 2033 case 5: 2034 mode = TP_ACPI_MULTI_MODE_TENT; 2035 break; 2036 default: 2037 if (type == 5 && value == 0xffff) { 2038 pr_warn("Multi mode status is undetected, assuming laptop\n"); 2039 return 0; 2040 } 2041 } 2042 2043 if (!(mode & valid_modes)) { 2044 pr_err("Unknown/reserved multi mode value 0x%04X for type %d, please report this to %s\n", 2045 value, type, TPACPI_MAIL); 2046 return 0; 2047 } 2048 2049 return !!(mode & TP_ACPI_MULTI_MODE_TABLET_LIKE); 2050} 2051 2052static int hotkey_get_tablet_mode(int *status) 2053{ 2054 int s; 2055 2056 switch (tp_features.hotkey_tablet) { 2057 case TP_HOTKEY_TABLET_USES_MHKG: 2058 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d")) 2059 return -EIO; 2060 2061 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0); 2062 break; 2063 case TP_HOTKEY_TABLET_USES_GMMS: 2064 if (!acpi_evalf(hkey_handle, &s, "GMMS", "dd", 0)) 2065 return -EIO; 2066 2067 *status = hotkey_gmms_get_tablet_mode(s, NULL); 2068 break; 2069 default: 2070 break; 2071 } 2072 2073 return 0; 2074} 2075 2076/* 2077 * Reads current event mask from firmware, and updates 2078 * hotkey_acpi_mask accordingly. Also resets any bits 2079 * from hotkey_user_mask that are unavailable to be 2080 * delivered (shadow requirement of the userspace ABI). 2081 */ 2082static int hotkey_mask_get(void) 2083{ 2084 lockdep_assert_held(&hotkey_mutex); 2085 2086 if (tp_features.hotkey_mask) { 2087 u32 m = 0; 2088 2089 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d")) 2090 return -EIO; 2091 2092 hotkey_acpi_mask = m; 2093 } else { 2094 /* no mask support doesn't mean no event support... */ 2095 hotkey_acpi_mask = hotkey_all_mask; 2096 } 2097 2098 /* sync userspace-visible mask */ 2099 hotkey_user_mask &= (hotkey_acpi_mask | hotkey_source_mask); 2100 2101 return 0; 2102} 2103 2104static void hotkey_mask_warn_incomplete_mask(void) 2105{ 2106 /* log only what the user can fix... */ 2107 const u32 wantedmask = hotkey_driver_mask & 2108 ~(hotkey_acpi_mask | hotkey_source_mask) & 2109 (hotkey_all_mask | TPACPI_HKEY_NVRAM_KNOWN_MASK); 2110 2111 if (wantedmask) 2112 pr_notice("required events 0x%08x not enabled!\n", wantedmask); 2113} 2114 2115/* 2116 * Set the firmware mask when supported 2117 * 2118 * Also calls hotkey_mask_get to update hotkey_acpi_mask. 2119 * 2120 * NOTE: does not set bits in hotkey_user_mask, but may reset them. 2121 */ 2122static int hotkey_mask_set(u32 mask) 2123{ 2124 int i; 2125 int rc = 0; 2126 2127 const u32 fwmask = mask & ~hotkey_source_mask; 2128 2129 lockdep_assert_held(&hotkey_mutex); 2130 2131 if (tp_features.hotkey_mask) { 2132 for (i = 0; i < 32; i++) { 2133 if (!acpi_evalf(hkey_handle, 2134 NULL, "MHKM", "vdd", i + 1, 2135 !!(mask & (1 << i)))) { 2136 rc = -EIO; 2137 break; 2138 } 2139 } 2140 } 2141 2142 /* 2143 * We *must* make an inconditional call to hotkey_mask_get to 2144 * refresh hotkey_acpi_mask and update hotkey_user_mask 2145 * 2146 * Take the opportunity to also log when we cannot _enable_ 2147 * a given event. 2148 */ 2149 if (!hotkey_mask_get() && !rc && (fwmask & ~hotkey_acpi_mask)) { 2150 pr_notice("asked for hotkey mask 0x%08x, but firmware forced it to 0x%08x\n", 2151 fwmask, hotkey_acpi_mask); 2152 } 2153 2154 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING) 2155 hotkey_mask_warn_incomplete_mask(); 2156 2157 return rc; 2158} 2159 2160/* 2161 * Sets hotkey_user_mask and tries to set the firmware mask 2162 */ 2163static int hotkey_user_mask_set(const u32 mask) 2164{ 2165 int rc; 2166 2167 lockdep_assert_held(&hotkey_mutex); 2168 2169 /* Give people a chance to notice they are doing something that 2170 * is bound to go boom on their users sooner or later */ 2171 if (!tp_warned.hotkey_mask_ff && 2172 (mask == 0xffff || mask == 0xffffff || 2173 mask == 0xffffffff)) { 2174 tp_warned.hotkey_mask_ff = 1; 2175 pr_notice("setting the hotkey mask to 0x%08x is likely not the best way to go about it\n", 2176 mask); 2177 pr_notice("please consider using the driver defaults, and refer to up-to-date thinkpad-acpi documentation\n"); 2178 } 2179 2180 /* Try to enable what the user asked for, plus whatever we need. 2181 * this syncs everything but won't enable bits in hotkey_user_mask */ 2182 rc = hotkey_mask_set((mask | hotkey_driver_mask) & ~hotkey_source_mask); 2183 2184 /* Enable the available bits in hotkey_user_mask */ 2185 hotkey_user_mask = mask & (hotkey_acpi_mask | hotkey_source_mask); 2186 2187 return rc; 2188} 2189 2190/* 2191 * Sets the driver hotkey mask. 2192 * 2193 * Can be called even if the hotkey subdriver is inactive 2194 */ 2195static int tpacpi_hotkey_driver_mask_set(const u32 mask) 2196{ 2197 int rc; 2198 2199 /* Do the right thing if hotkey_init has not been called yet */ 2200 if (!tp_features.hotkey) { 2201 hotkey_driver_mask = mask; 2202 return 0; 2203 } 2204 2205 mutex_lock(&hotkey_mutex); 2206 2207 HOTKEY_CONFIG_CRITICAL_START 2208 hotkey_driver_mask = mask; 2209#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2210 hotkey_source_mask |= (mask & ~hotkey_all_mask); 2211#endif 2212 HOTKEY_CONFIG_CRITICAL_END 2213 2214 rc = hotkey_mask_set((hotkey_acpi_mask | hotkey_driver_mask) & 2215 ~hotkey_source_mask); 2216 hotkey_poll_setup(true); 2217 2218 mutex_unlock(&hotkey_mutex); 2219 2220 return rc; 2221} 2222 2223static int hotkey_status_get(int *status) 2224{ 2225 if (!acpi_evalf(hkey_handle, status, "DHKC", "d")) 2226 return -EIO; 2227 2228 return 0; 2229} 2230 2231static int hotkey_status_set(bool enable) 2232{ 2233 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0)) 2234 return -EIO; 2235 2236 return 0; 2237} 2238 2239static void tpacpi_input_send_tabletsw(void) 2240{ 2241 int state; 2242 2243 if (tp_features.hotkey_tablet && 2244 !hotkey_get_tablet_mode(&state)) { 2245 mutex_lock(&tpacpi_inputdev_send_mutex); 2246 2247 input_report_switch(tpacpi_inputdev, 2248 SW_TABLET_MODE, !!state); 2249 input_sync(tpacpi_inputdev); 2250 2251 mutex_unlock(&tpacpi_inputdev_send_mutex); 2252 } 2253} 2254 2255#define GCES_NO_SHUTTER_DEVICE BIT(31) 2256 2257static int get_camera_shutter(void) 2258{ 2259 acpi_handle gces_handle; 2260 int output; 2261 2262 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GCES", &gces_handle))) 2263 return -ENODEV; 2264 2265 if (!acpi_evalf(gces_handle, &output, NULL, "dd", 0)) 2266 return -EIO; 2267 2268 if (output & GCES_NO_SHUTTER_DEVICE) 2269 return -ENODEV; 2270 2271 return output; 2272} 2273 2274static bool tpacpi_input_send_key(const u32 hkey, bool *send_acpi_ev) 2275{ 2276 bool known_ev; 2277 u32 scancode; 2278 2279 if (tpacpi_driver_event(hkey)) 2280 return true; 2281 2282 /* 2283 * Before the conversion to using the sparse-keymap helpers the driver used to 2284 * map the hkey event codes to 0x00 - 0x4d scancodes so that a straight scancode 2285 * indexed array could be used to map scancodes to keycodes: 2286 * 2287 * 0x1001 - 0x1020 -> 0x00 - 0x1f (Original ThinkPad events) 2288 * 0x1103 - 0x1116 -> 0x20 - 0x33 (Adaptive keyboard, 2014 X1 Carbon) 2289 * 0x1300 - 0x1319 -> 0x34 - 0x4d (Additional keys send in 2017+ models) 2290 * 2291 * The sparse-keymap tables still use these scancodes for these ranges to 2292 * preserve userspace API compatibility (e.g. hwdb keymappings). 2293 */ 2294 if (hkey >= TP_HKEY_EV_ORIG_KEY_START && 2295 hkey <= TP_HKEY_EV_ORIG_KEY_END) { 2296 scancode = hkey - TP_HKEY_EV_ORIG_KEY_START; 2297 if (!(hotkey_user_mask & (1 << scancode))) 2298 return true; /* Not reported but still a known code */ 2299 } else if (hkey >= TP_HKEY_EV_ADAPTIVE_KEY_START && 2300 hkey <= TP_HKEY_EV_ADAPTIVE_KEY_END) { 2301 scancode = hkey - TP_HKEY_EV_ADAPTIVE_KEY_START + 2302 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START; 2303 } else if (hkey >= TP_HKEY_EV_EXTENDED_KEY_START && 2304 hkey <= TP_HKEY_EV_EXTENDED_KEY_END) { 2305 scancode = hkey - TP_HKEY_EV_EXTENDED_KEY_START + 2306 TP_ACPI_HOTKEYSCAN_EXTENDED_START; 2307 } else { 2308 /* 2309 * Do not send ACPI netlink events for unknown hotkeys, to 2310 * avoid userspace starting to rely on them. Instead these 2311 * should be added to the keymap to send evdev events. 2312 */ 2313 if (send_acpi_ev) 2314 *send_acpi_ev = false; 2315 2316 scancode = hkey; 2317 } 2318 2319 mutex_lock(&tpacpi_inputdev_send_mutex); 2320 known_ev = sparse_keymap_report_event(tpacpi_inputdev, scancode, 1, true); 2321 mutex_unlock(&tpacpi_inputdev_send_mutex); 2322 2323 return known_ev; 2324} 2325 2326#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2327static struct tp_acpi_drv_struct ibm_hotkey_acpidriver; 2328 2329/* Do NOT call without validating scancode first */ 2330static void tpacpi_hotkey_send_key(unsigned int scancode) 2331{ 2332 tpacpi_input_send_key(TP_HKEY_EV_ORIG_KEY_START + scancode, NULL); 2333} 2334 2335static void hotkey_read_nvram(struct tp_nvram_state *n, const u32 m) 2336{ 2337 u8 d; 2338 2339 if (m & TP_NVRAM_HKEY_GROUP_HK2) { 2340 d = nvram_read_byte(TP_NVRAM_ADDR_HK2); 2341 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD); 2342 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM); 2343 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY); 2344 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE); 2345 } 2346 if (m & TP_ACPI_HKEY_KBD_LIGHT_MASK) { 2347 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT); 2348 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT); 2349 } 2350 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) { 2351 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO); 2352 n->displayexp_toggle = 2353 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND); 2354 } 2355 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) { 2356 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); 2357 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 2358 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; 2359 n->brightness_toggle = 2360 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS); 2361 } 2362 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) { 2363 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER); 2364 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME) 2365 >> TP_NVRAM_POS_LEVEL_VOLUME; 2366 n->mute = !!(d & TP_NVRAM_MASK_MUTE); 2367 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME); 2368 } 2369} 2370 2371#define TPACPI_COMPARE_KEY(__scancode, __member) \ 2372do { \ 2373 if ((event_mask & (1 << __scancode)) && \ 2374 oldn->__member != newn->__member) \ 2375 tpacpi_hotkey_send_key(__scancode); \ 2376} while (0) 2377 2378#define TPACPI_MAY_SEND_KEY(__scancode) \ 2379do { \ 2380 if (event_mask & (1 << __scancode)) \ 2381 tpacpi_hotkey_send_key(__scancode); \ 2382} while (0) 2383 2384static void issue_volchange(const unsigned int oldvol, 2385 const unsigned int newvol, 2386 const u32 event_mask) 2387{ 2388 unsigned int i = oldvol; 2389 2390 while (i > newvol) { 2391 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); 2392 i--; 2393 } 2394 while (i < newvol) { 2395 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2396 i++; 2397 } 2398} 2399 2400static void issue_brightnesschange(const unsigned int oldbrt, 2401 const unsigned int newbrt, 2402 const u32 event_mask) 2403{ 2404 unsigned int i = oldbrt; 2405 2406 while (i > newbrt) { 2407 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); 2408 i--; 2409 } 2410 while (i < newbrt) { 2411 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); 2412 i++; 2413 } 2414} 2415 2416static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn, 2417 struct tp_nvram_state *newn, 2418 const u32 event_mask) 2419{ 2420 2421 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle); 2422 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle); 2423 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle); 2424 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle); 2425 2426 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle); 2427 2428 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle); 2429 2430 /* 2431 * Handle volume 2432 * 2433 * This code is supposed to duplicate the IBM firmware behaviour: 2434 * - Pressing MUTE issues mute hotkey message, even when already mute 2435 * - Pressing Volume up/down issues volume up/down hotkey messages, 2436 * even when already at maximum or minimum volume 2437 * - The act of unmuting issues volume up/down notification, 2438 * depending which key was used to unmute 2439 * 2440 * We are constrained to what the NVRAM can tell us, which is not much 2441 * and certainly not enough if more than one volume hotkey was pressed 2442 * since the last poll cycle. 2443 * 2444 * Just to make our life interesting, some newer Lenovo ThinkPads have 2445 * bugs in the BIOS and may fail to update volume_toggle properly. 2446 */ 2447 if (newn->mute) { 2448 /* muted */ 2449 if (!oldn->mute || 2450 oldn->volume_toggle != newn->volume_toggle || 2451 oldn->volume_level != newn->volume_level) { 2452 /* recently muted, or repeated mute keypress, or 2453 * multiple presses ending in mute */ 2454 issue_volchange(oldn->volume_level, newn->volume_level, 2455 event_mask); 2456 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE); 2457 } 2458 } else { 2459 /* unmute */ 2460 if (oldn->mute) { 2461 /* recently unmuted, issue 'unmute' keypress */ 2462 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2463 } 2464 if (oldn->volume_level != newn->volume_level) { 2465 issue_volchange(oldn->volume_level, newn->volume_level, 2466 event_mask); 2467 } else if (oldn->volume_toggle != newn->volume_toggle) { 2468 /* repeated vol up/down keypress at end of scale ? */ 2469 if (newn->volume_level == 0) 2470 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); 2471 else if (newn->volume_level >= TP_NVRAM_LEVEL_VOLUME_MAX) 2472 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2473 } 2474 } 2475 2476 /* handle brightness */ 2477 if (oldn->brightness_level != newn->brightness_level) { 2478 issue_brightnesschange(oldn->brightness_level, 2479 newn->brightness_level, event_mask); 2480 } else if (oldn->brightness_toggle != newn->brightness_toggle) { 2481 /* repeated key presses that didn't change state */ 2482 if (newn->brightness_level == 0) 2483 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); 2484 else if (newn->brightness_level >= bright_maxlvl 2485 && !tp_features.bright_unkfw) 2486 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); 2487 } 2488 2489#undef TPACPI_COMPARE_KEY 2490#undef TPACPI_MAY_SEND_KEY 2491} 2492 2493/* 2494 * Polling driver 2495 * 2496 * We track all events in hotkey_source_mask all the time, since 2497 * most of them are edge-based. We only issue those requested by 2498 * hotkey_user_mask or hotkey_driver_mask, though. 2499 */ 2500static int hotkey_kthread(void *data) 2501{ 2502 struct tp_nvram_state s[2] = { 0 }; 2503 u32 poll_mask, event_mask; 2504 unsigned int si, so; 2505 unsigned long t; 2506 unsigned int change_detector; 2507 unsigned int poll_freq; 2508 bool was_frozen; 2509 2510 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING) 2511 goto exit; 2512 2513 set_freezable(); 2514 2515 so = 0; 2516 si = 1; 2517 t = 0; 2518 2519 /* Initial state for compares */ 2520 mutex_lock(&hotkey_thread_data_mutex); 2521 change_detector = hotkey_config_change; 2522 poll_mask = hotkey_source_mask; 2523 event_mask = hotkey_source_mask & 2524 (hotkey_driver_mask | hotkey_user_mask); 2525 poll_freq = hotkey_poll_freq; 2526 mutex_unlock(&hotkey_thread_data_mutex); 2527 hotkey_read_nvram(&s[so], poll_mask); 2528 2529 while (!kthread_should_stop()) { 2530 if (t == 0) { 2531 if (likely(poll_freq)) 2532 t = 1000/poll_freq; 2533 else 2534 t = 100; /* should never happen... */ 2535 } 2536 t = msleep_interruptible(t); 2537 if (unlikely(kthread_freezable_should_stop(&was_frozen))) 2538 break; 2539 2540 if (t > 0 && !was_frozen) 2541 continue; 2542 2543 mutex_lock(&hotkey_thread_data_mutex); 2544 if (was_frozen || hotkey_config_change != change_detector) { 2545 /* forget old state on thaw or config change */ 2546 si = so; 2547 t = 0; 2548 change_detector = hotkey_config_change; 2549 } 2550 poll_mask = hotkey_source_mask; 2551 event_mask = hotkey_source_mask & 2552 (hotkey_driver_mask | hotkey_user_mask); 2553 poll_freq = hotkey_poll_freq; 2554 mutex_unlock(&hotkey_thread_data_mutex); 2555 2556 if (likely(poll_mask)) { 2557 hotkey_read_nvram(&s[si], poll_mask); 2558 if (likely(si != so)) { 2559 hotkey_compare_and_issue_event(&s[so], &s[si], 2560 event_mask); 2561 } 2562 } 2563 2564 so = si; 2565 si ^= 1; 2566 } 2567 2568exit: 2569 return 0; 2570} 2571 2572static void hotkey_poll_stop_sync(void) 2573{ 2574 lockdep_assert_held(&hotkey_mutex); 2575 2576 if (tpacpi_hotkey_task) { 2577 kthread_stop(tpacpi_hotkey_task); 2578 tpacpi_hotkey_task = NULL; 2579 } 2580} 2581 2582static void hotkey_poll_setup(const bool may_warn) 2583{ 2584 const u32 poll_driver_mask = hotkey_driver_mask & hotkey_source_mask; 2585 const u32 poll_user_mask = hotkey_user_mask & hotkey_source_mask; 2586 2587 lockdep_assert_held(&hotkey_mutex); 2588 2589 if (hotkey_poll_freq > 0 && 2590 (poll_driver_mask || 2591 (poll_user_mask && tpacpi_inputdev->users > 0))) { 2592 if (!tpacpi_hotkey_task) { 2593 tpacpi_hotkey_task = kthread_run(hotkey_kthread, 2594 NULL, TPACPI_NVRAM_KTHREAD_NAME); 2595 if (IS_ERR(tpacpi_hotkey_task)) { 2596 tpacpi_hotkey_task = NULL; 2597 pr_err("could not create kernel thread for hotkey polling\n"); 2598 } 2599 } 2600 } else { 2601 hotkey_poll_stop_sync(); 2602 if (may_warn && (poll_driver_mask || poll_user_mask) && 2603 hotkey_poll_freq == 0) { 2604 pr_notice("hot keys 0x%08x and/or events 0x%08x require polling, which is currently disabled\n", 2605 poll_user_mask, poll_driver_mask); 2606 } 2607 } 2608} 2609 2610static void hotkey_poll_setup_safe(const bool may_warn) 2611{ 2612 mutex_lock(&hotkey_mutex); 2613 hotkey_poll_setup(may_warn); 2614 mutex_unlock(&hotkey_mutex); 2615} 2616 2617static void hotkey_poll_set_freq(unsigned int freq) 2618{ 2619 lockdep_assert_held(&hotkey_mutex); 2620 2621 if (!freq) 2622 hotkey_poll_stop_sync(); 2623 2624 hotkey_poll_freq = freq; 2625} 2626 2627#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2628 2629static void hotkey_poll_setup(const bool __unused) 2630{ 2631} 2632 2633static void hotkey_poll_setup_safe(const bool __unused) 2634{ 2635} 2636 2637static void hotkey_poll_stop_sync(void) 2638{ 2639} 2640#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2641 2642static int hotkey_inputdev_open(struct input_dev *dev) 2643{ 2644 switch (tpacpi_lifecycle) { 2645 case TPACPI_LIFE_INIT: 2646 case TPACPI_LIFE_RUNNING: 2647 hotkey_poll_setup_safe(false); 2648 return 0; 2649 case TPACPI_LIFE_EXITING: 2650 return -EBUSY; 2651 } 2652 2653 /* Should only happen if tpacpi_lifecycle is corrupt */ 2654 BUG(); 2655 return -EBUSY; 2656} 2657 2658static void hotkey_inputdev_close(struct input_dev *dev) 2659{ 2660 /* disable hotkey polling when possible */ 2661 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING && 2662 !(hotkey_source_mask & hotkey_driver_mask)) 2663 hotkey_poll_setup_safe(false); 2664} 2665 2666/* sysfs hotkey enable ------------------------------------------------- */ 2667static ssize_t hotkey_enable_show(struct device *dev, 2668 struct device_attribute *attr, 2669 char *buf) 2670{ 2671 int res, status; 2672 2673 printk_deprecated_attribute("hotkey_enable", 2674 "Hotkey reporting is always enabled"); 2675 2676 res = hotkey_status_get(&status); 2677 if (res) 2678 return res; 2679 2680 return sysfs_emit(buf, "%d\n", status); 2681} 2682 2683static ssize_t hotkey_enable_store(struct device *dev, 2684 struct device_attribute *attr, 2685 const char *buf, size_t count) 2686{ 2687 unsigned long t; 2688 2689 printk_deprecated_attribute("hotkey_enable", 2690 "Hotkeys can be disabled through hotkey_mask"); 2691 2692 if (parse_strtoul(buf, 1, &t)) 2693 return -EINVAL; 2694 2695 if (t == 0) 2696 return -EPERM; 2697 2698 return count; 2699} 2700 2701static DEVICE_ATTR_RW(hotkey_enable); 2702 2703/* sysfs hotkey mask --------------------------------------------------- */ 2704static ssize_t hotkey_mask_show(struct device *dev, 2705 struct device_attribute *attr, 2706 char *buf) 2707{ 2708 return sysfs_emit(buf, "0x%08x\n", hotkey_user_mask); 2709} 2710 2711static ssize_t hotkey_mask_store(struct device *dev, 2712 struct device_attribute *attr, 2713 const char *buf, size_t count) 2714{ 2715 unsigned long t; 2716 int res; 2717 2718 if (parse_strtoul(buf, 0xffffffffUL, &t)) 2719 return -EINVAL; 2720 2721 if (mutex_lock_killable(&hotkey_mutex)) 2722 return -ERESTARTSYS; 2723 2724 res = hotkey_user_mask_set(t); 2725 2726#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2727 hotkey_poll_setup(true); 2728#endif 2729 2730 mutex_unlock(&hotkey_mutex); 2731 2732 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t); 2733 2734 return (res) ? res : count; 2735} 2736 2737static DEVICE_ATTR_RW(hotkey_mask); 2738 2739/* sysfs hotkey bios_enabled ------------------------------------------- */ 2740static ssize_t hotkey_bios_enabled_show(struct device *dev, 2741 struct device_attribute *attr, 2742 char *buf) 2743{ 2744 return sysfs_emit(buf, "0\n"); 2745} 2746 2747static DEVICE_ATTR_RO(hotkey_bios_enabled); 2748 2749/* sysfs hotkey bios_mask ---------------------------------------------- */ 2750static ssize_t hotkey_bios_mask_show(struct device *dev, 2751 struct device_attribute *attr, 2752 char *buf) 2753{ 2754 printk_deprecated_attribute("hotkey_bios_mask", 2755 "This attribute is useless."); 2756 return sysfs_emit(buf, "0x%08x\n", hotkey_orig_mask); 2757} 2758 2759static DEVICE_ATTR_RO(hotkey_bios_mask); 2760 2761/* sysfs hotkey all_mask ----------------------------------------------- */ 2762static ssize_t hotkey_all_mask_show(struct device *dev, 2763 struct device_attribute *attr, 2764 char *buf) 2765{ 2766 return sysfs_emit(buf, "0x%08x\n", 2767 hotkey_all_mask | hotkey_source_mask); 2768} 2769 2770static DEVICE_ATTR_RO(hotkey_all_mask); 2771 2772/* sysfs hotkey all_mask ----------------------------------------------- */ 2773static ssize_t hotkey_adaptive_all_mask_show(struct device *dev, 2774 struct device_attribute *attr, 2775 char *buf) 2776{ 2777 return sysfs_emit(buf, "0x%08x\n", 2778 hotkey_adaptive_all_mask | hotkey_source_mask); 2779} 2780 2781static DEVICE_ATTR_RO(hotkey_adaptive_all_mask); 2782 2783/* sysfs hotkey recommended_mask --------------------------------------- */ 2784static ssize_t hotkey_recommended_mask_show(struct device *dev, 2785 struct device_attribute *attr, 2786 char *buf) 2787{ 2788 return sysfs_emit(buf, "0x%08x\n", 2789 (hotkey_all_mask | hotkey_source_mask) 2790 & ~hotkey_reserved_mask); 2791} 2792 2793static DEVICE_ATTR_RO(hotkey_recommended_mask); 2794 2795#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2796 2797/* sysfs hotkey hotkey_source_mask ------------------------------------- */ 2798static ssize_t hotkey_source_mask_show(struct device *dev, 2799 struct device_attribute *attr, 2800 char *buf) 2801{ 2802 return sysfs_emit(buf, "0x%08x\n", hotkey_source_mask); 2803} 2804 2805static ssize_t hotkey_source_mask_store(struct device *dev, 2806 struct device_attribute *attr, 2807 const char *buf, size_t count) 2808{ 2809 unsigned long t; 2810 u32 r_ev; 2811 int rc; 2812 2813 if (parse_strtoul(buf, 0xffffffffUL, &t) || 2814 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0)) 2815 return -EINVAL; 2816 2817 if (mutex_lock_killable(&hotkey_mutex)) 2818 return -ERESTARTSYS; 2819 2820 HOTKEY_CONFIG_CRITICAL_START 2821 hotkey_source_mask = t; 2822 HOTKEY_CONFIG_CRITICAL_END 2823 2824 rc = hotkey_mask_set((hotkey_user_mask | hotkey_driver_mask) & 2825 ~hotkey_source_mask); 2826 hotkey_poll_setup(true); 2827 2828 /* check if events needed by the driver got disabled */ 2829 r_ev = hotkey_driver_mask & ~(hotkey_acpi_mask & hotkey_all_mask) 2830 & ~hotkey_source_mask & TPACPI_HKEY_NVRAM_KNOWN_MASK; 2831 2832 mutex_unlock(&hotkey_mutex); 2833 2834 if (rc < 0) 2835 pr_err("hotkey_source_mask: failed to update the firmware event mask!\n"); 2836 2837 if (r_ev) 2838 pr_notice("hotkey_source_mask: some important events were disabled: 0x%04x\n", 2839 r_ev); 2840 2841 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t); 2842 2843 return (rc < 0) ? rc : count; 2844} 2845 2846static DEVICE_ATTR_RW(hotkey_source_mask); 2847 2848/* sysfs hotkey hotkey_poll_freq --------------------------------------- */ 2849static ssize_t hotkey_poll_freq_show(struct device *dev, 2850 struct device_attribute *attr, 2851 char *buf) 2852{ 2853 return sysfs_emit(buf, "%d\n", hotkey_poll_freq); 2854} 2855 2856static ssize_t hotkey_poll_freq_store(struct device *dev, 2857 struct device_attribute *attr, 2858 const char *buf, size_t count) 2859{ 2860 unsigned long t; 2861 2862 if (parse_strtoul(buf, 25, &t)) 2863 return -EINVAL; 2864 2865 if (mutex_lock_killable(&hotkey_mutex)) 2866 return -ERESTARTSYS; 2867 2868 hotkey_poll_set_freq(t); 2869 hotkey_poll_setup(true); 2870 2871 mutex_unlock(&hotkey_mutex); 2872 2873 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t); 2874 2875 return count; 2876} 2877 2878static DEVICE_ATTR_RW(hotkey_poll_freq); 2879 2880#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2881 2882/* sysfs hotkey radio_sw (pollable) ------------------------------------ */ 2883static ssize_t hotkey_radio_sw_show(struct device *dev, 2884 struct device_attribute *attr, 2885 char *buf) 2886{ 2887 int res; 2888 res = hotkey_get_wlsw(); 2889 if (res < 0) 2890 return res; 2891 2892 /* Opportunistic update */ 2893 tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF)); 2894 2895 return sysfs_emit(buf, "%d\n", 2896 (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1); 2897} 2898 2899static DEVICE_ATTR_RO(hotkey_radio_sw); 2900 2901static void hotkey_radio_sw_notify_change(void) 2902{ 2903 if (tp_features.hotkey_wlsw) 2904 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2905 "hotkey_radio_sw"); 2906} 2907 2908/* sysfs hotkey tablet mode (pollable) --------------------------------- */ 2909static ssize_t hotkey_tablet_mode_show(struct device *dev, 2910 struct device_attribute *attr, 2911 char *buf) 2912{ 2913 int res, s; 2914 res = hotkey_get_tablet_mode(&s); 2915 if (res < 0) 2916 return res; 2917 2918 return sysfs_emit(buf, "%d\n", !!s); 2919} 2920 2921static DEVICE_ATTR_RO(hotkey_tablet_mode); 2922 2923static void hotkey_tablet_mode_notify_change(void) 2924{ 2925 if (tp_features.hotkey_tablet) 2926 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2927 "hotkey_tablet_mode"); 2928} 2929 2930/* sysfs wakeup reason (pollable) -------------------------------------- */ 2931static ssize_t hotkey_wakeup_reason_show(struct device *dev, 2932 struct device_attribute *attr, 2933 char *buf) 2934{ 2935 return sysfs_emit(buf, "%d\n", hotkey_wakeup_reason); 2936} 2937 2938static DEVICE_ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL); 2939 2940static void hotkey_wakeup_reason_notify_change(void) 2941{ 2942 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2943 "wakeup_reason"); 2944} 2945 2946/* sysfs wakeup hotunplug_complete (pollable) -------------------------- */ 2947static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev, 2948 struct device_attribute *attr, 2949 char *buf) 2950{ 2951 return sysfs_emit(buf, "%d\n", hotkey_autosleep_ack); 2952} 2953 2954static DEVICE_ATTR(wakeup_hotunplug_complete, S_IRUGO, 2955 hotkey_wakeup_hotunplug_complete_show, NULL); 2956 2957static void hotkey_wakeup_hotunplug_complete_notify_change(void) 2958{ 2959 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2960 "wakeup_hotunplug_complete"); 2961} 2962 2963/* sysfs adaptive kbd mode --------------------------------------------- */ 2964 2965static int adaptive_keyboard_get_mode(void); 2966static int adaptive_keyboard_set_mode(int new_mode); 2967 2968enum ADAPTIVE_KEY_MODE { 2969 HOME_MODE, 2970 WEB_BROWSER_MODE, 2971 WEB_CONFERENCE_MODE, 2972 FUNCTION_MODE, 2973 LAYFLAT_MODE 2974}; 2975 2976static ssize_t adaptive_kbd_mode_show(struct device *dev, 2977 struct device_attribute *attr, 2978 char *buf) 2979{ 2980 int current_mode; 2981 2982 current_mode = adaptive_keyboard_get_mode(); 2983 if (current_mode < 0) 2984 return current_mode; 2985 2986 return sysfs_emit(buf, "%d\n", current_mode); 2987} 2988 2989static ssize_t adaptive_kbd_mode_store(struct device *dev, 2990 struct device_attribute *attr, 2991 const char *buf, size_t count) 2992{ 2993 unsigned long t; 2994 int res; 2995 2996 if (parse_strtoul(buf, LAYFLAT_MODE, &t)) 2997 return -EINVAL; 2998 2999 res = adaptive_keyboard_set_mode(t); 3000 return (res < 0) ? res : count; 3001} 3002 3003static DEVICE_ATTR_RW(adaptive_kbd_mode); 3004 3005static struct attribute *adaptive_kbd_attributes[] = { 3006 &dev_attr_adaptive_kbd_mode.attr, 3007 NULL 3008}; 3009 3010static umode_t hadaptive_kbd_attr_is_visible(struct kobject *kobj, 3011 struct attribute *attr, int n) 3012{ 3013 return tp_features.has_adaptive_kbd ? attr->mode : 0; 3014} 3015 3016static const struct attribute_group adaptive_kbd_attr_group = { 3017 .is_visible = hadaptive_kbd_attr_is_visible, 3018 .attrs = adaptive_kbd_attributes, 3019}; 3020 3021/* --------------------------------------------------------------------- */ 3022 3023static struct attribute *hotkey_attributes[] = { 3024 &dev_attr_hotkey_enable.attr, 3025 &dev_attr_hotkey_bios_enabled.attr, 3026 &dev_attr_hotkey_bios_mask.attr, 3027 &dev_attr_wakeup_reason.attr, 3028 &dev_attr_wakeup_hotunplug_complete.attr, 3029 &dev_attr_hotkey_mask.attr, 3030 &dev_attr_hotkey_all_mask.attr, 3031 &dev_attr_hotkey_adaptive_all_mask.attr, 3032 &dev_attr_hotkey_recommended_mask.attr, 3033 &dev_attr_hotkey_tablet_mode.attr, 3034 &dev_attr_hotkey_radio_sw.attr, 3035#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3036 &dev_attr_hotkey_source_mask.attr, 3037 &dev_attr_hotkey_poll_freq.attr, 3038#endif 3039 NULL 3040}; 3041 3042static umode_t hotkey_attr_is_visible(struct kobject *kobj, 3043 struct attribute *attr, int n) 3044{ 3045 if (attr == &dev_attr_hotkey_tablet_mode.attr) { 3046 if (!tp_features.hotkey_tablet) 3047 return 0; 3048 } else if (attr == &dev_attr_hotkey_radio_sw.attr) { 3049 if (!tp_features.hotkey_wlsw) 3050 return 0; 3051 } 3052 3053 return attr->mode; 3054} 3055 3056static const struct attribute_group hotkey_attr_group = { 3057 .is_visible = hotkey_attr_is_visible, 3058 .attrs = hotkey_attributes, 3059}; 3060 3061/* 3062 * Sync both the hw and sw blocking state of all switches 3063 */ 3064static void tpacpi_send_radiosw_update(void) 3065{ 3066 int wlsw; 3067 3068 /* 3069 * We must sync all rfkill controllers *before* issuing any 3070 * rfkill input events, or we will race the rfkill core input 3071 * handler. 3072 * 3073 * tpacpi_inputdev_send_mutex works as a synchronization point 3074 * for the above. 3075 * 3076 * We optimize to avoid numerous calls to hotkey_get_wlsw. 3077 */ 3078 3079 wlsw = hotkey_get_wlsw(); 3080 3081 /* Sync hw blocking state first if it is hw-blocked */ 3082 if (wlsw == TPACPI_RFK_RADIO_OFF) 3083 tpacpi_rfk_update_hwblock_state(true); 3084 3085 /* Sync hw blocking state last if it is hw-unblocked */ 3086 if (wlsw == TPACPI_RFK_RADIO_ON) 3087 tpacpi_rfk_update_hwblock_state(false); 3088 3089 /* Issue rfkill input event for WLSW switch */ 3090 if (!(wlsw < 0)) { 3091 mutex_lock(&tpacpi_inputdev_send_mutex); 3092 3093 input_report_switch(tpacpi_inputdev, 3094 SW_RFKILL_ALL, (wlsw > 0)); 3095 input_sync(tpacpi_inputdev); 3096 3097 mutex_unlock(&tpacpi_inputdev_send_mutex); 3098 } 3099 3100 /* 3101 * this can be unconditional, as we will poll state again 3102 * if userspace uses the notify to read data 3103 */ 3104 hotkey_radio_sw_notify_change(); 3105} 3106 3107static void hotkey_exit(void) 3108{ 3109 mutex_lock(&hotkey_mutex); 3110 hotkey_poll_stop_sync(); 3111 dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY, 3112 "restoring original HKEY status and mask\n"); 3113 /* yes, there is a bitwise or below, we want the 3114 * functions to be called even if one of them fail */ 3115 if (((tp_features.hotkey_mask && 3116 hotkey_mask_set(hotkey_orig_mask)) | 3117 hotkey_status_set(false)) != 0) 3118 pr_err("failed to restore hot key mask to BIOS defaults\n"); 3119 3120 mutex_unlock(&hotkey_mutex); 3121} 3122 3123/* 3124 * HKEY quirks: 3125 * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12 3126 */ 3127 3128#define TPACPI_HK_Q_INIMASK 0x0001 3129 3130static const struct tpacpi_quirk tpacpi_hotkey_qtable[] __initconst = { 3131 TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK), /* 600E */ 3132 TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK), /* 600E */ 3133 TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK), /* 770, 770E, 770ED */ 3134 TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK), /* A20m */ 3135 TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK), /* A20p */ 3136 TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK), /* A21e, A22e */ 3137 TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK), /* A21e */ 3138 TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK), /* A21m, A22m */ 3139 TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK), /* A21p, A22p */ 3140 TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK), /* A22e */ 3141 TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK), /* A22m */ 3142 TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK), /* A30/p (0) */ 3143 TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK), /* R30 */ 3144 TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK), /* R31 */ 3145 TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK), /* T20 */ 3146 TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK), /* T21 */ 3147 TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK), /* T22 */ 3148 TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK), /* X20, X21 */ 3149 TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK), /* X22, X23, X24 */ 3150}; 3151 3152static int hotkey_init_tablet_mode(void) 3153{ 3154 int in_tablet_mode = 0, res; 3155 char *type = NULL; 3156 3157 if (acpi_evalf(hkey_handle, &res, "GMMS", "qdd", 0)) { 3158 int has_tablet_mode; 3159 3160 in_tablet_mode = hotkey_gmms_get_tablet_mode(res, 3161 &has_tablet_mode); 3162 /* 3163 * The Yoga 11e series has 2 accelerometers described by a 3164 * BOSC0200 ACPI node. This setup relies on a Windows service 3165 * which calls special ACPI methods on this node to report 3166 * the laptop/tent/tablet mode to the EC. The bmc150 iio driver 3167 * does not support this, so skip the hotkey on these models. 3168 */ 3169 if (has_tablet_mode && !dual_accel_detect()) 3170 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_GMMS; 3171 type = "GMMS"; 3172 } else if (acpi_evalf(hkey_handle, &res, "MHKG", "qd")) { 3173 /* For X41t, X60t, X61t Tablets... */ 3174 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_MHKG; 3175 in_tablet_mode = !!(res & TP_HOTKEY_TABLET_MASK); 3176 type = "MHKG"; 3177 } 3178 3179 if (!tp_features.hotkey_tablet) 3180 return 0; 3181 3182 pr_info("Tablet mode switch found (type: %s), currently in %s mode\n", 3183 type, in_tablet_mode ? "tablet" : "laptop"); 3184 3185 return in_tablet_mode; 3186} 3187 3188static const struct key_entry keymap_ibm[] __initconst = { 3189 /* Original hotkey mappings translated scancodes 0x00 - 0x1f */ 3190 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF1, { KEY_FN_F1 } }, 3191 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF2, { KEY_BATTERY } }, 3192 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF3, { KEY_COFFEE } }, 3193 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF4, { KEY_SLEEP } }, 3194 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF5, { KEY_WLAN } }, 3195 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF6, { KEY_FN_F6 } }, 3196 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF7, { KEY_SWITCHVIDEOMODE } }, 3197 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF8, { KEY_FN_F8 } }, 3198 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF9, { KEY_FN_F9 } }, 3199 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF10, { KEY_FN_F10 } }, 3200 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF11, { KEY_FN_F11 } }, 3201 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF12, { KEY_SUSPEND } }, 3202 /* Brightness: firmware always reacts, suppressed through hotkey_reserved_mask. */ 3203 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNHOME, { KEY_BRIGHTNESSUP } }, 3204 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNEND, { KEY_BRIGHTNESSDOWN } }, 3205 /* Thinklight: firmware always reacts, suppressed through hotkey_reserved_mask. */ 3206 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNPAGEUP, { KEY_KBDILLUMTOGGLE } }, 3207 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNSPACE, { KEY_ZOOM } }, 3208 /* 3209 * Volume: firmware always reacts and reprograms the built-in *extra* mixer. 3210 * Suppressed by default through hotkey_reserved_mask. 3211 */ 3212 { KE_KEY, TP_ACPI_HOTKEYSCAN_VOLUMEUP, { KEY_VOLUMEUP } }, 3213 { KE_KEY, TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, { KEY_VOLUMEDOWN } }, 3214 { KE_KEY, TP_ACPI_HOTKEYSCAN_MUTE, { KEY_MUTE } }, 3215 { KE_KEY, TP_ACPI_HOTKEYSCAN_THINKPAD, { KEY_VENDOR } }, 3216 { KE_END } 3217}; 3218 3219static const struct key_entry keymap_lenovo[] __initconst = { 3220 /* Original hotkey mappings translated scancodes 0x00 - 0x1f */ 3221 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF1, { KEY_FN_F1 } }, 3222 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF2, { KEY_COFFEE } }, 3223 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF3, { KEY_BATTERY } }, 3224 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF4, { KEY_SLEEP } }, 3225 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF5, { KEY_WLAN } }, 3226 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF6, { KEY_CAMERA, } }, 3227 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF7, { KEY_SWITCHVIDEOMODE } }, 3228 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF8, { KEY_FN_F8 } }, 3229 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF9, { KEY_FN_F9 } }, 3230 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF10, { KEY_FN_F10 } }, 3231 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF11, { KEY_FN_F11 } }, 3232 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF12, { KEY_SUSPEND } }, 3233 /* 3234 * These should be enabled --only-- when ACPI video is disabled and 3235 * are handled in a special way by the init code. 3236 */ 3237 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNHOME, { KEY_BRIGHTNESSUP } }, 3238 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNEND, { KEY_BRIGHTNESSDOWN } }, 3239 /* Suppressed by default through hotkey_reserved_mask. */ 3240 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNPAGEUP, { KEY_KBDILLUMTOGGLE } }, 3241 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNSPACE, { KEY_ZOOM } }, 3242 /* 3243 * Volume: z60/z61, T60 (BIOS version?): firmware always reacts and 3244 * reprograms the built-in *extra* mixer. 3245 * T60?, T61, R60?, R61: firmware and EC tries to send these over 3246 * the regular keyboard (not through tpacpi). There are still weird bugs 3247 * re. MUTE. May cause the BIOS to interfere with the HDA mixer. 3248 * Suppressed by default through hotkey_reserved_mask. 3249 */ 3250 { KE_KEY, TP_ACPI_HOTKEYSCAN_VOLUMEUP, { KEY_VOLUMEUP } }, 3251 { KE_KEY, TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, { KEY_VOLUMEDOWN } }, 3252 { KE_KEY, TP_ACPI_HOTKEYSCAN_MUTE, { KEY_MUTE } }, 3253 { KE_KEY, TP_ACPI_HOTKEYSCAN_THINKPAD, { KEY_VENDOR } }, 3254 { KE_KEY, TP_ACPI_HOTKEYSCAN_MICMUTE, { KEY_MICMUTE } }, 3255 { KE_KEY, TP_ACPI_HOTKEYSCAN_CONFIG, { KEY_CONFIG } }, 3256 { KE_KEY, TP_ACPI_HOTKEYSCAN_SEARCH, { KEY_SEARCH } }, 3257 { KE_KEY, TP_ACPI_HOTKEYSCAN_SCALE, { KEY_SCALE } }, 3258 { KE_KEY, TP_ACPI_HOTKEYSCAN_FILE, { KEY_FILE } }, 3259 /* Adaptive keyboard mappings for Carbon X1 2014 translated scancodes 0x20 - 0x33 */ 3260 { KE_KEY, TP_ACPI_HOTKEYSCAN_MUTE2, { KEY_RESERVED } }, 3261 { KE_KEY, TP_ACPI_HOTKEYSCAN_BRIGHTNESS_ZERO, { KEY_BRIGHTNESS_MIN } }, 3262 { KE_KEY, TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL, { KEY_SELECTIVE_SCREENSHOT } }, 3263 { KE_KEY, TP_ACPI_HOTKEYSCAN_CLOUD, { KEY_XFER } }, 3264 { KE_KEY, TP_ACPI_HOTKEYSCAN_UNK9, { KEY_RESERVED } }, 3265 { KE_KEY, TP_ACPI_HOTKEYSCAN_VOICE, { KEY_VOICECOMMAND } }, 3266 { KE_KEY, TP_ACPI_HOTKEYSCAN_UNK10, { KEY_RESERVED } }, 3267 { KE_KEY, TP_ACPI_HOTKEYSCAN_GESTURES, { KEY_RESERVED } }, 3268 { KE_KEY, TP_ACPI_HOTKEYSCAN_UNK11, { KEY_RESERVED } }, 3269 { KE_KEY, TP_ACPI_HOTKEYSCAN_UNK12, { KEY_RESERVED } }, 3270 { KE_KEY, TP_ACPI_HOTKEYSCAN_UNK13, { KEY_RESERVED } }, 3271 { KE_KEY, TP_ACPI_HOTKEYSCAN_CONFIG2, { KEY_CONFIG } }, 3272 { KE_KEY, TP_ACPI_HOTKEYSCAN_NEW_TAB, { KEY_RESERVED } }, 3273 { KE_KEY, TP_ACPI_HOTKEYSCAN_RELOAD, { KEY_REFRESH } }, 3274 { KE_KEY, TP_ACPI_HOTKEYSCAN_BACK, { KEY_BACK } }, 3275 { KE_KEY, TP_ACPI_HOTKEYSCAN_MIC_DOWN, { KEY_RESERVED } }, 3276 { KE_KEY, TP_ACPI_HOTKEYSCAN_MIC_UP, { KEY_RESERVED } }, 3277 { KE_KEY, TP_ACPI_HOTKEYSCAN_MIC_CANCELLATION, { KEY_RESERVED } }, 3278 { KE_KEY, TP_ACPI_HOTKEYSCAN_CAMERA_MODE, { KEY_RESERVED } }, 3279 { KE_KEY, TP_ACPI_HOTKEYSCAN_ROTATE_DISPLAY, { KEY_RESERVED } }, 3280 /* Extended hotkeys mappings translated scancodes 0x34 - 0x4d */ 3281 { KE_KEY, TP_ACPI_HOTKEYSCAN_STAR, { KEY_BOOKMARKS } }, 3282 { KE_KEY, TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL2, { KEY_SELECTIVE_SCREENSHOT } }, 3283 { KE_KEY, TP_ACPI_HOTKEYSCAN_CALCULATOR, { KEY_CALC } }, 3284 { KE_KEY, TP_ACPI_HOTKEYSCAN_BLUETOOTH, { KEY_BLUETOOTH } }, 3285 { KE_KEY, TP_ACPI_HOTKEYSCAN_KEYBOARD, { KEY_KEYBOARD } }, 3286 /* Used by "Lenovo Quick Clean" */ 3287 { KE_KEY, TP_ACPI_HOTKEYSCAN_FN_RIGHT_SHIFT, { KEY_FN_RIGHT_SHIFT } }, 3288 { KE_KEY, TP_ACPI_HOTKEYSCAN_NOTIFICATION_CENTER, { KEY_NOTIFICATION_CENTER } }, 3289 { KE_KEY, TP_ACPI_HOTKEYSCAN_PICKUP_PHONE, { KEY_PICKUP_PHONE } }, 3290 { KE_KEY, TP_ACPI_HOTKEYSCAN_HANGUP_PHONE, { KEY_HANGUP_PHONE } }, 3291 /* 3292 * All mapping below are for raw untranslated hkey event codes mapped directly 3293 * after switching to sparse keymap support. The mappings above use translated 3294 * scancodes to preserve uAPI compatibility, see tpacpi_input_send_key(). 3295 */ 3296 { KE_KEY, 0x131d, { KEY_VENDOR } }, /* System debug info, similar to old ThinkPad key */ 3297 { KE_KEY, 0x1320, { KEY_LINK_PHONE } }, 3298 { KE_KEY, 0x1402, { KEY_LINK_PHONE } }, 3299 { KE_KEY, TP_HKEY_EV_TRACK_DOUBLETAP /* 0x8036 */, { KEY_PROG4 } }, 3300 { KE_END } 3301}; 3302 3303static int __init hotkey_init(struct ibm_init_struct *iibm) 3304{ 3305 enum keymap_index { 3306 TPACPI_KEYMAP_IBM_GENERIC = 0, 3307 TPACPI_KEYMAP_LENOVO_GENERIC, 3308 }; 3309 3310 static const struct tpacpi_quirk tpacpi_keymap_qtable[] __initconst = { 3311 /* Generic maps (fallback) */ 3312 { 3313 .vendor = PCI_VENDOR_ID_IBM, 3314 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 3315 .quirks = TPACPI_KEYMAP_IBM_GENERIC, 3316 }, 3317 { 3318 .vendor = PCI_VENDOR_ID_LENOVO, 3319 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 3320 .quirks = TPACPI_KEYMAP_LENOVO_GENERIC, 3321 }, 3322 }; 3323 3324 unsigned long keymap_id, quirks; 3325 const struct key_entry *keymap; 3326 bool radiosw_state = false; 3327 bool tabletsw_state = false; 3328 int hkeyv, res, status, camera_shutter_state; 3329 3330 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3331 "initializing hotkey subdriver\n"); 3332 3333 BUG_ON(!tpacpi_inputdev); 3334 BUG_ON(tpacpi_inputdev->open != NULL || 3335 tpacpi_inputdev->close != NULL); 3336 3337 TPACPI_ACPIHANDLE_INIT(hkey); 3338 mutex_init(&hotkey_mutex); 3339 3340#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3341 mutex_init(&hotkey_thread_data_mutex); 3342#endif 3343 3344 /* hotkey not supported on 570 */ 3345 tp_features.hotkey = hkey_handle != NULL; 3346 3347 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3348 "hotkeys are %s\n", 3349 str_supported(tp_features.hotkey)); 3350 3351 if (!tp_features.hotkey) 3352 return -ENODEV; 3353 3354 quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable, 3355 ARRAY_SIZE(tpacpi_hotkey_qtable)); 3356 3357 tpacpi_disable_brightness_delay(); 3358 3359 /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p, 3360 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking 3361 for HKEY interface version 0x100 */ 3362 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) { 3363 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3364 "firmware HKEY interface version: 0x%x\n", 3365 hkeyv); 3366 3367 switch (hkeyv >> 8) { 3368 case 1: 3369 /* 3370 * MHKV 0x100 in A31, R40, R40e, 3371 * T4x, X31, and later 3372 */ 3373 3374 /* Paranoia check AND init hotkey_all_mask */ 3375 if (!acpi_evalf(hkey_handle, &hotkey_all_mask, 3376 "MHKA", "qd")) { 3377 pr_err("missing MHKA handler, please report this to %s\n", 3378 TPACPI_MAIL); 3379 /* Fallback: pre-init for FN+F3,F4,F12 */ 3380 hotkey_all_mask = 0x080cU; 3381 } else { 3382 tp_features.hotkey_mask = 1; 3383 } 3384 break; 3385 3386 case 2: 3387 /* 3388 * MHKV 0x200 in X1, T460s, X260, T560, X1 Tablet (2016) 3389 */ 3390 3391 /* Paranoia check AND init hotkey_all_mask */ 3392 if (!acpi_evalf(hkey_handle, &hotkey_all_mask, 3393 "MHKA", "dd", 1)) { 3394 pr_err("missing MHKA handler, please report this to %s\n", 3395 TPACPI_MAIL); 3396 /* Fallback: pre-init for FN+F3,F4,F12 */ 3397 hotkey_all_mask = 0x080cU; 3398 } else { 3399 tp_features.hotkey_mask = 1; 3400 } 3401 3402 /* 3403 * Check if we have an adaptive keyboard, like on the 3404 * Lenovo Carbon X1 2014 (2nd Gen). 3405 */ 3406 if (acpi_evalf(hkey_handle, &hotkey_adaptive_all_mask, 3407 "MHKA", "dd", 2)) { 3408 if (hotkey_adaptive_all_mask != 0) 3409 tp_features.has_adaptive_kbd = true; 3410 } else { 3411 tp_features.has_adaptive_kbd = false; 3412 hotkey_adaptive_all_mask = 0x0U; 3413 } 3414 break; 3415 3416 default: 3417 pr_err("unknown version of the HKEY interface: 0x%x\n", 3418 hkeyv); 3419 pr_err("please report this to %s\n", TPACPI_MAIL); 3420 break; 3421 } 3422 } 3423 3424 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3425 "hotkey masks are %s\n", 3426 str_supported(tp_features.hotkey_mask)); 3427 3428 /* Init hotkey_all_mask if not initialized yet */ 3429 if (!tp_features.hotkey_mask && !hotkey_all_mask && 3430 (quirks & TPACPI_HK_Q_INIMASK)) 3431 hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */ 3432 3433 /* Init hotkey_acpi_mask and hotkey_orig_mask */ 3434 if (tp_features.hotkey_mask) { 3435 /* hotkey_source_mask *must* be zero for 3436 * the first hotkey_mask_get to return hotkey_orig_mask */ 3437 mutex_lock(&hotkey_mutex); 3438 res = hotkey_mask_get(); 3439 mutex_unlock(&hotkey_mutex); 3440 if (res) 3441 return res; 3442 3443 hotkey_orig_mask = hotkey_acpi_mask; 3444 } else { 3445 hotkey_orig_mask = hotkey_all_mask; 3446 hotkey_acpi_mask = hotkey_all_mask; 3447 } 3448 3449#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 3450 if (dbg_wlswemul) { 3451 tp_features.hotkey_wlsw = 1; 3452 radiosw_state = !!tpacpi_wlsw_emulstate; 3453 pr_info("radio switch emulation enabled\n"); 3454 } else 3455#endif 3456 /* Not all thinkpads have a hardware radio switch */ 3457 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) { 3458 tp_features.hotkey_wlsw = 1; 3459 radiosw_state = !!status; 3460 pr_info("radio switch found; radios are %s\n", str_enabled_disabled(status & BIT(0))); 3461 } 3462 3463 tabletsw_state = hotkey_init_tablet_mode(); 3464 3465 /* Set up key map */ 3466 keymap_id = tpacpi_check_quirks(tpacpi_keymap_qtable, 3467 ARRAY_SIZE(tpacpi_keymap_qtable)); 3468 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3469 "using keymap number %lu\n", keymap_id); 3470 3471 /* Keys which should be reserved on both IBM and Lenovo models */ 3472 hotkey_reserved_mask = TP_ACPI_HKEY_KBD_LIGHT_MASK | 3473 TP_ACPI_HKEY_VOLUP_MASK | 3474 TP_ACPI_HKEY_VOLDWN_MASK | 3475 TP_ACPI_HKEY_MUTE_MASK; 3476 /* 3477 * Reserve brightness up/down unconditionally on IBM models, on Lenovo 3478 * models these are disabled based on acpi_video_get_backlight_type(). 3479 */ 3480 if (keymap_id == TPACPI_KEYMAP_IBM_GENERIC) { 3481 hotkey_reserved_mask |= TP_ACPI_HKEY_BRGHTUP_MASK | 3482 TP_ACPI_HKEY_BRGHTDWN_MASK; 3483 keymap = keymap_ibm; 3484 } else { 3485 keymap = keymap_lenovo; 3486 } 3487 3488 res = sparse_keymap_setup(tpacpi_inputdev, keymap, NULL); 3489 if (res) 3490 return res; 3491 3492 camera_shutter_state = get_camera_shutter(); 3493 if (camera_shutter_state >= 0) { 3494 input_set_capability(tpacpi_inputdev, EV_SW, SW_CAMERA_LENS_COVER); 3495 input_report_switch(tpacpi_inputdev, SW_CAMERA_LENS_COVER, camera_shutter_state); 3496 } 3497 3498 if (tp_features.hotkey_wlsw) { 3499 input_set_capability(tpacpi_inputdev, EV_SW, SW_RFKILL_ALL); 3500 input_report_switch(tpacpi_inputdev, 3501 SW_RFKILL_ALL, radiosw_state); 3502 } 3503 if (tp_features.hotkey_tablet) { 3504 input_set_capability(tpacpi_inputdev, EV_SW, SW_TABLET_MODE); 3505 input_report_switch(tpacpi_inputdev, 3506 SW_TABLET_MODE, tabletsw_state); 3507 } 3508 3509 /* Do not issue duplicate brightness change events to 3510 * userspace. tpacpi_detect_brightness_capabilities() must have 3511 * been called before this point */ 3512 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) { 3513 pr_info("This ThinkPad has standard ACPI backlight brightness control, supported by the ACPI video driver\n"); 3514 pr_notice("Disabling thinkpad-acpi brightness events by default...\n"); 3515 3516 /* Disable brightness up/down on Lenovo thinkpads when 3517 * ACPI is handling them, otherwise it is plain impossible 3518 * for userspace to do something even remotely sane */ 3519 hotkey_reserved_mask |= TP_ACPI_HKEY_BRGHTUP_MASK | 3520 TP_ACPI_HKEY_BRGHTDWN_MASK; 3521 } 3522 3523#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3524 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK 3525 & ~hotkey_all_mask 3526 & ~hotkey_reserved_mask; 3527 3528 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3529 "hotkey source mask 0x%08x, polling freq %u\n", 3530 hotkey_source_mask, hotkey_poll_freq); 3531#endif 3532 3533 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3534 "enabling firmware HKEY event interface...\n"); 3535 res = hotkey_status_set(true); 3536 if (res) { 3537 hotkey_exit(); 3538 return res; 3539 } 3540 mutex_lock(&hotkey_mutex); 3541 res = hotkey_mask_set(((hotkey_all_mask & ~hotkey_reserved_mask) 3542 | hotkey_driver_mask) 3543 & ~hotkey_source_mask); 3544 mutex_unlock(&hotkey_mutex); 3545 if (res < 0 && res != -ENXIO) { 3546 hotkey_exit(); 3547 return res; 3548 } 3549 hotkey_user_mask = (hotkey_acpi_mask | hotkey_source_mask) 3550 & ~hotkey_reserved_mask; 3551 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3552 "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n", 3553 hotkey_user_mask, hotkey_acpi_mask, hotkey_source_mask); 3554 3555 tpacpi_inputdev->open = &hotkey_inputdev_open; 3556 tpacpi_inputdev->close = &hotkey_inputdev_close; 3557 3558 hotkey_poll_setup_safe(true); 3559 3560 /* Enable doubletap by default */ 3561 tp_features.trackpoint_doubletap = 1; 3562 3563 return 0; 3564} 3565 3566/* Thinkpad X1 Carbon support 5 modes including Home mode, Web browser 3567 * mode, Web conference mode, Function mode and Lay-flat mode. 3568 * We support Home mode and Function mode currently. 3569 * 3570 * Will consider support rest of modes in future. 3571 * 3572 */ 3573static const int adaptive_keyboard_modes[] = { 3574 HOME_MODE, 3575/* WEB_BROWSER_MODE = 2, 3576 WEB_CONFERENCE_MODE = 3, */ 3577 FUNCTION_MODE 3578}; 3579 3580/* press Fn key a while second, it will switch to Function Mode. Then 3581 * release Fn key, previous mode be restored. 3582 */ 3583static bool adaptive_keyboard_mode_is_saved; 3584static int adaptive_keyboard_prev_mode; 3585 3586static int adaptive_keyboard_get_mode(void) 3587{ 3588 int mode = 0; 3589 3590 if (!acpi_evalf(hkey_handle, &mode, "GTRW", "dd", 0)) { 3591 pr_err("Cannot read adaptive keyboard mode\n"); 3592 return -EIO; 3593 } 3594 3595 return mode; 3596} 3597 3598static int adaptive_keyboard_set_mode(int new_mode) 3599{ 3600 if (new_mode < 0 || 3601 new_mode > LAYFLAT_MODE) 3602 return -EINVAL; 3603 3604 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", new_mode)) { 3605 pr_err("Cannot set adaptive keyboard mode\n"); 3606 return -EIO; 3607 } 3608 3609 return 0; 3610} 3611 3612static int adaptive_keyboard_get_next_mode(int mode) 3613{ 3614 size_t i; 3615 size_t max_mode = ARRAY_SIZE(adaptive_keyboard_modes) - 1; 3616 3617 for (i = 0; i <= max_mode; i++) { 3618 if (adaptive_keyboard_modes[i] == mode) 3619 break; 3620 } 3621 3622 if (i >= max_mode) 3623 i = 0; 3624 else 3625 i++; 3626 3627 return adaptive_keyboard_modes[i]; 3628} 3629 3630static void adaptive_keyboard_change_row(void) 3631{ 3632 int mode; 3633 3634 if (adaptive_keyboard_mode_is_saved) { 3635 mode = adaptive_keyboard_prev_mode; 3636 adaptive_keyboard_mode_is_saved = false; 3637 } else { 3638 mode = adaptive_keyboard_get_mode(); 3639 if (mode < 0) 3640 return; 3641 mode = adaptive_keyboard_get_next_mode(mode); 3642 } 3643 3644 adaptive_keyboard_set_mode(mode); 3645} 3646 3647static void adaptive_keyboard_s_quickview_row(void) 3648{ 3649 int mode; 3650 3651 mode = adaptive_keyboard_get_mode(); 3652 if (mode < 0) 3653 return; 3654 3655 adaptive_keyboard_prev_mode = mode; 3656 adaptive_keyboard_mode_is_saved = true; 3657 3658 adaptive_keyboard_set_mode(FUNCTION_MODE); 3659} 3660 3661/* 0x1000-0x1FFF: key presses */ 3662static bool hotkey_notify_hotkey(const u32 hkey, bool *send_acpi_ev) 3663{ 3664 /* Never send ACPI netlink events for original hotkeys (hkey: 0x1001 - 0x1020) */ 3665 if (hkey >= TP_HKEY_EV_ORIG_KEY_START && hkey <= TP_HKEY_EV_ORIG_KEY_END) { 3666 *send_acpi_ev = false; 3667 3668 /* Original hotkeys may be polled from NVRAM instead */ 3669 unsigned int scancode = hkey - TP_HKEY_EV_ORIG_KEY_START; 3670 if (hotkey_source_mask & (1 << scancode)) 3671 return true; 3672 } 3673 3674 return tpacpi_input_send_key(hkey, send_acpi_ev); 3675} 3676 3677/* 0x2000-0x2FFF: Wakeup reason */ 3678static bool hotkey_notify_wakeup(const u32 hkey, bool *send_acpi_ev) 3679{ 3680 switch (hkey) { 3681 case TP_HKEY_EV_WKUP_S3_UNDOCK: /* suspend, undock */ 3682 case TP_HKEY_EV_WKUP_S4_UNDOCK: /* hibernation, undock */ 3683 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK; 3684 *send_acpi_ev = false; 3685 break; 3686 3687 case TP_HKEY_EV_WKUP_S3_BAYEJ: /* suspend, bay eject */ 3688 case TP_HKEY_EV_WKUP_S4_BAYEJ: /* hibernation, bay eject */ 3689 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ; 3690 *send_acpi_ev = false; 3691 break; 3692 3693 case TP_HKEY_EV_WKUP_S3_BATLOW: /* Battery on critical low level/S3 */ 3694 case TP_HKEY_EV_WKUP_S4_BATLOW: /* Battery on critical low level/S4 */ 3695 pr_alert("EMERGENCY WAKEUP: battery almost empty\n"); 3696 /* how to auto-heal: */ 3697 /* 2313: woke up from S3, go to S4/S5 */ 3698 /* 2413: woke up from S4, go to S5 */ 3699 break; 3700 3701 default: 3702 return false; 3703 } 3704 3705 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) { 3706 pr_info("woke up due to a hot-unplug request...\n"); 3707 hotkey_wakeup_reason_notify_change(); 3708 } 3709 return true; 3710} 3711 3712/* 0x4000-0x4FFF: dock-related events */ 3713static bool hotkey_notify_dockevent(const u32 hkey, bool *send_acpi_ev) 3714{ 3715 switch (hkey) { 3716 case TP_HKEY_EV_UNDOCK_ACK: 3717 /* ACPI undock operation completed after wakeup */ 3718 hotkey_autosleep_ack = 1; 3719 pr_info("undocked\n"); 3720 hotkey_wakeup_hotunplug_complete_notify_change(); 3721 return true; 3722 3723 case TP_HKEY_EV_HOTPLUG_DOCK: /* docked to port replicator */ 3724 pr_info("docked into hotplug port replicator\n"); 3725 return true; 3726 case TP_HKEY_EV_HOTPLUG_UNDOCK: /* undocked from port replicator */ 3727 pr_info("undocked from hotplug port replicator\n"); 3728 return true; 3729 3730 /* 3731 * Deliberately ignore attaching and detaching the keybord cover to avoid 3732 * duplicates from intel-vbtn, which already emits SW_TABLET_MODE events 3733 * to userspace. 3734 * 3735 * Please refer to the following thread for more information and a preliminary 3736 * implementation using the GTOP ("Get Tablet OPtions") interface that could be 3737 * extended to other attachment options of the ThinkPad X1 Tablet series, such as 3738 * the Pico cartridge dock module: 3739 * https://lore.kernel.org/platform-driver-x86/38cb8265-1e30-d547-9e12-b4ae290be737@a-kobel.de/ 3740 */ 3741 case TP_HKEY_EV_KBD_COVER_ATTACH: 3742 case TP_HKEY_EV_KBD_COVER_DETACH: 3743 *send_acpi_ev = false; 3744 return true; 3745 3746 default: 3747 return false; 3748 } 3749} 3750 3751/* 0x5000-0x5FFF: human interface helpers */ 3752static bool hotkey_notify_usrevent(const u32 hkey, bool *send_acpi_ev) 3753{ 3754 switch (hkey) { 3755 case TP_HKEY_EV_PEN_INSERTED: /* X61t: tablet pen inserted into bay */ 3756 case TP_HKEY_EV_PEN_REMOVED: /* X61t: tablet pen removed from bay */ 3757 return true; 3758 3759 case TP_HKEY_EV_TABLET_TABLET: /* X41t-X61t: tablet mode */ 3760 case TP_HKEY_EV_TABLET_NOTEBOOK: /* X41t-X61t: normal mode */ 3761 tpacpi_input_send_tabletsw(); 3762 hotkey_tablet_mode_notify_change(); 3763 *send_acpi_ev = false; 3764 return true; 3765 3766 case TP_HKEY_EV_LID_CLOSE: /* Lid closed */ 3767 case TP_HKEY_EV_LID_OPEN: /* Lid opened */ 3768 case TP_HKEY_EV_BRGHT_CHANGED: /* brightness changed */ 3769 /* do not propagate these events */ 3770 *send_acpi_ev = false; 3771 return true; 3772 3773 default: 3774 return false; 3775 } 3776} 3777 3778static void thermal_dump_all_sensors(void); 3779static void palmsensor_refresh(void); 3780 3781/* 0x6000-0x6FFF: thermal alarms/notices and keyboard events */ 3782static bool hotkey_notify_6xxx(const u32 hkey, bool *send_acpi_ev) 3783{ 3784 switch (hkey) { 3785 case TP_HKEY_EV_THM_TABLE_CHANGED: 3786 pr_debug("EC reports: Thermal Table has changed\n"); 3787 /* recommended action: do nothing, we don't have 3788 * Lenovo ATM information */ 3789 return true; 3790 case TP_HKEY_EV_THM_CSM_COMPLETED: 3791 pr_debug("EC reports: Thermal Control Command set completed (DYTC)\n"); 3792 /* Thermal event - pass on to event handler */ 3793 tpacpi_driver_event(hkey); 3794 return true; 3795 case TP_HKEY_EV_THM_TRANSFM_CHANGED: 3796 pr_debug("EC reports: Thermal Transformation changed (GMTS)\n"); 3797 /* recommended action: do nothing, we don't have 3798 * Lenovo ATM information */ 3799 return true; 3800 case TP_HKEY_EV_ALARM_BAT_HOT: 3801 pr_crit("THERMAL ALARM: battery is too hot!\n"); 3802 /* recommended action: warn user through gui */ 3803 break; 3804 case TP_HKEY_EV_ALARM_BAT_XHOT: 3805 pr_alert("THERMAL EMERGENCY: battery is extremely hot!\n"); 3806 /* recommended action: immediate sleep/hibernate */ 3807 break; 3808 case TP_HKEY_EV_ALARM_BAT_LIM_CHANGE: 3809 pr_debug("Battery Info: battery charge threshold changed\n"); 3810 /* User changed charging threshold. No action needed */ 3811 return true; 3812 case TP_HKEY_EV_ALARM_SENSOR_HOT: 3813 pr_crit("THERMAL ALARM: a sensor reports something is too hot!\n"); 3814 /* recommended action: warn user through gui, that */ 3815 /* some internal component is too hot */ 3816 break; 3817 case TP_HKEY_EV_ALARM_SENSOR_XHOT: 3818 pr_alert("THERMAL EMERGENCY: a sensor reports something is extremely hot!\n"); 3819 /* recommended action: immediate sleep/hibernate */ 3820 break; 3821 case TP_HKEY_EV_AC_CHANGED: 3822 /* X120e, X121e, X220, X220i, X220t, X230, T420, T420s, W520: 3823 * AC status changed; can be triggered by plugging or 3824 * unplugging AC adapter, docking or undocking. */ 3825 3826 fallthrough; 3827 3828 case TP_HKEY_EV_KEY_NUMLOCK: 3829 case TP_HKEY_EV_KEY_FN: 3830 /* key press events, we just ignore them as long as the EC 3831 * is still reporting them in the normal keyboard stream */ 3832 *send_acpi_ev = false; 3833 return true; 3834 3835 case TP_HKEY_EV_KEY_FN_ESC: 3836 /* Get the media key status to force the status LED to update */ 3837 acpi_evalf(hkey_handle, NULL, "GMKS", "v"); 3838 *send_acpi_ev = false; 3839 return true; 3840 3841 case TP_HKEY_EV_TABLET_CHANGED: 3842 tpacpi_input_send_tabletsw(); 3843 hotkey_tablet_mode_notify_change(); 3844 *send_acpi_ev = false; 3845 return true; 3846 3847 case TP_HKEY_EV_PALM_DETECTED: 3848 case TP_HKEY_EV_PALM_UNDETECTED: 3849 /* palm detected - pass on to event handler */ 3850 palmsensor_refresh(); 3851 return true; 3852 3853 default: 3854 /* report simply as unknown, no sensor dump */ 3855 return false; 3856 } 3857 3858 thermal_dump_all_sensors(); 3859 return true; 3860} 3861 3862static bool hotkey_notify_8xxx(const u32 hkey, bool *send_acpi_ev) 3863{ 3864 switch (hkey) { 3865 case TP_HKEY_EV_TRACK_DOUBLETAP: 3866 if (tp_features.trackpoint_doubletap) 3867 tpacpi_input_send_key(hkey, send_acpi_ev); 3868 3869 return true; 3870 default: 3871 return false; 3872 } 3873} 3874 3875static void hotkey_notify(struct ibm_struct *ibm, u32 event) 3876{ 3877 u32 hkey; 3878 bool send_acpi_ev; 3879 bool known_ev; 3880 3881 if (event != 0x80) { 3882 pr_err("unknown HKEY notification event %d\n", event); 3883 /* forward it to userspace, maybe it knows how to handle it */ 3884 acpi_bus_generate_netlink_event( 3885 ibm->acpi->device->pnp.device_class, 3886 dev_name(&ibm->acpi->device->dev), 3887 event, 0); 3888 return; 3889 } 3890 3891 while (1) { 3892 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) { 3893 pr_err("failed to retrieve HKEY event\n"); 3894 return; 3895 } 3896 3897 if (hkey == 0) { 3898 /* queue empty */ 3899 return; 3900 } 3901 3902 send_acpi_ev = true; 3903 known_ev = false; 3904 3905 switch (hkey >> 12) { 3906 case 1: 3907 /* 0x1000-0x1FFF: key presses */ 3908 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev); 3909 break; 3910 case 2: 3911 /* 0x2000-0x2FFF: Wakeup reason */ 3912 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev); 3913 break; 3914 case 3: 3915 /* 0x3000-0x3FFF: bay-related wakeups */ 3916 switch (hkey) { 3917 case TP_HKEY_EV_BAYEJ_ACK: 3918 hotkey_autosleep_ack = 1; 3919 pr_info("bay ejected\n"); 3920 hotkey_wakeup_hotunplug_complete_notify_change(); 3921 known_ev = true; 3922 break; 3923 case TP_HKEY_EV_OPTDRV_EJ: 3924 /* FIXME: kick libata if SATA link offline */ 3925 known_ev = true; 3926 break; 3927 } 3928 break; 3929 case 4: 3930 /* 0x4000-0x4FFF: dock-related events */ 3931 known_ev = hotkey_notify_dockevent(hkey, &send_acpi_ev); 3932 break; 3933 case 5: 3934 /* 0x5000-0x5FFF: human interface helpers */ 3935 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev); 3936 break; 3937 case 6: 3938 /* 0x6000-0x6FFF: thermal alarms/notices and 3939 * keyboard events */ 3940 known_ev = hotkey_notify_6xxx(hkey, &send_acpi_ev); 3941 break; 3942 case 7: 3943 /* 0x7000-0x7FFF: misc */ 3944 if (tp_features.hotkey_wlsw && 3945 hkey == TP_HKEY_EV_RFKILL_CHANGED) { 3946 tpacpi_send_radiosw_update(); 3947 send_acpi_ev = false; 3948 known_ev = true; 3949 } 3950 break; 3951 case 8: 3952 /* 0x8000-0x8FFF: misc2 */ 3953 known_ev = hotkey_notify_8xxx(hkey, &send_acpi_ev); 3954 break; 3955 } 3956 if (!known_ev) { 3957 pr_notice("unhandled HKEY event 0x%04x\n", hkey); 3958 pr_notice("please report the conditions when this event happened to %s\n", 3959 TPACPI_MAIL); 3960 } 3961 3962 /* netlink events */ 3963 if (send_acpi_ev) { 3964 acpi_bus_generate_netlink_event( 3965 ibm->acpi->device->pnp.device_class, 3966 dev_name(&ibm->acpi->device->dev), 3967 event, hkey); 3968 } 3969 } 3970} 3971 3972static void hotkey_suspend(void) 3973{ 3974 /* Do these on suspend, we get the events on early resume! */ 3975 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE; 3976 hotkey_autosleep_ack = 0; 3977 3978 /* save previous mode of adaptive keyboard of X1 Carbon */ 3979 if (tp_features.has_adaptive_kbd) { 3980 if (!acpi_evalf(hkey_handle, &adaptive_keyboard_prev_mode, 3981 "GTRW", "dd", 0)) { 3982 pr_err("Cannot read adaptive keyboard mode.\n"); 3983 } 3984 } 3985} 3986 3987static void hotkey_resume(void) 3988{ 3989 tpacpi_disable_brightness_delay(); 3990 3991 mutex_lock(&hotkey_mutex); 3992 if (hotkey_status_set(true) < 0 || 3993 hotkey_mask_set(hotkey_acpi_mask) < 0) 3994 pr_err("error while attempting to reset the event firmware interface\n"); 3995 mutex_unlock(&hotkey_mutex); 3996 3997 tpacpi_send_radiosw_update(); 3998 tpacpi_input_send_tabletsw(); 3999 hotkey_tablet_mode_notify_change(); 4000 hotkey_wakeup_reason_notify_change(); 4001 hotkey_wakeup_hotunplug_complete_notify_change(); 4002 hotkey_poll_setup_safe(false); 4003 4004 /* restore previous mode of adapive keyboard of X1 Carbon */ 4005 if (tp_features.has_adaptive_kbd) { 4006 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", 4007 adaptive_keyboard_prev_mode)) { 4008 pr_err("Cannot set adaptive keyboard mode.\n"); 4009 } 4010 } 4011} 4012 4013/* procfs -------------------------------------------------------------- */ 4014static int hotkey_read(struct seq_file *m) 4015{ 4016 int res, status; 4017 4018 if (!tp_features.hotkey) { 4019 seq_printf(m, "status:\t\tnot supported\n"); 4020 return 0; 4021 } 4022 4023 if (mutex_lock_killable(&hotkey_mutex)) 4024 return -ERESTARTSYS; 4025 res = hotkey_status_get(&status); 4026 if (!res) 4027 res = hotkey_mask_get(); 4028 mutex_unlock(&hotkey_mutex); 4029 if (res) 4030 return res; 4031 4032 seq_printf(m, "status:\t\t%s\n", str_enabled_disabled(status & BIT(0))); 4033 if (hotkey_all_mask) { 4034 seq_printf(m, "mask:\t\t0x%08x\n", hotkey_user_mask); 4035 seq_printf(m, "commands:\tenable, disable, reset, <mask>\n"); 4036 } else { 4037 seq_printf(m, "mask:\t\tnot supported\n"); 4038 seq_printf(m, "commands:\tenable, disable, reset\n"); 4039 } 4040 4041 return 0; 4042} 4043 4044static void hotkey_enabledisable_warn(bool enable) 4045{ 4046 tpacpi_log_usertask("procfs hotkey enable/disable"); 4047 if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable), 4048 pr_fmt("hotkey enable/disable functionality has been removed from the driver. Hotkeys are always enabled.\n"))) 4049 pr_err("Please remove the hotkey=enable module parameter, it is deprecated. Hotkeys are always enabled.\n"); 4050} 4051 4052static int hotkey_write(char *buf) 4053{ 4054 int res; 4055 u32 mask; 4056 char *cmd; 4057 4058 if (!tp_features.hotkey) 4059 return -ENODEV; 4060 4061 if (mutex_lock_killable(&hotkey_mutex)) 4062 return -ERESTARTSYS; 4063 4064 mask = hotkey_user_mask; 4065 4066 res = 0; 4067 while ((cmd = strsep(&buf, ","))) { 4068 if (strstarts(cmd, "enable")) { 4069 hotkey_enabledisable_warn(1); 4070 } else if (strstarts(cmd, "disable")) { 4071 hotkey_enabledisable_warn(0); 4072 res = -EPERM; 4073 } else if (strstarts(cmd, "reset")) { 4074 mask = (hotkey_all_mask | hotkey_source_mask) 4075 & ~hotkey_reserved_mask; 4076 } else if (sscanf(cmd, "0x%x", &mask) == 1) { 4077 /* mask set */ 4078 } else if (sscanf(cmd, "%x", &mask) == 1) { 4079 /* mask set */ 4080 } else { 4081 res = -EINVAL; 4082 goto errexit; 4083 } 4084 } 4085 4086 if (!res) { 4087 tpacpi_disclose_usertask("procfs hotkey", 4088 "set mask to 0x%08x\n", mask); 4089 res = hotkey_user_mask_set(mask); 4090 } 4091 4092errexit: 4093 mutex_unlock(&hotkey_mutex); 4094 return res; 4095} 4096 4097static const struct acpi_device_id ibm_htk_device_ids[] = { 4098 {TPACPI_ACPI_IBM_HKEY_HID, 0}, 4099 {TPACPI_ACPI_LENOVO_HKEY_HID, 0}, 4100 {TPACPI_ACPI_LENOVO_HKEY_V2_HID, 0}, 4101 {"", 0}, 4102}; 4103 4104static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = { 4105 .hid = ibm_htk_device_ids, 4106 .notify = hotkey_notify, 4107 .handle = &hkey_handle, 4108 .type = ACPI_DEVICE_NOTIFY, 4109}; 4110 4111static struct ibm_struct hotkey_driver_data = { 4112 .name = "hotkey", 4113 .read = hotkey_read, 4114 .write = hotkey_write, 4115 .exit = hotkey_exit, 4116 .resume = hotkey_resume, 4117 .suspend = hotkey_suspend, 4118 .acpi = &ibm_hotkey_acpidriver, 4119}; 4120 4121/************************************************************************* 4122 * Bluetooth subdriver 4123 */ 4124 4125enum { 4126 /* ACPI GBDC/SBDC bits */ 4127 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */ 4128 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */ 4129 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume: 4130 0 = disable, 1 = enable */ 4131}; 4132 4133enum { 4134 /* ACPI \BLTH commands */ 4135 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */ 4136 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */ 4137 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */ 4138 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */ 4139 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */ 4140}; 4141 4142#define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw" 4143 4144static int bluetooth_get_status(void) 4145{ 4146 int status; 4147 4148#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4149 if (dbg_bluetoothemul) 4150 return (tpacpi_bluetooth_emulstate) ? 4151 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4152#endif 4153 4154 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d")) 4155 return -EIO; 4156 4157 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ? 4158 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4159} 4160 4161static int bluetooth_set_status(enum tpacpi_rfkill_state state) 4162{ 4163 int status; 4164 4165 vdbg_printk(TPACPI_DBG_RFKILL, "will attempt to %s bluetooth\n", 4166 str_enable_disable(state == TPACPI_RFK_RADIO_ON)); 4167 4168#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4169 if (dbg_bluetoothemul) { 4170 tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON); 4171 return 0; 4172 } 4173#endif 4174 4175 if (state == TPACPI_RFK_RADIO_ON) 4176 status = TP_ACPI_BLUETOOTH_RADIOSSW 4177 | TP_ACPI_BLUETOOTH_RESUMECTRL; 4178 else 4179 status = 0; 4180 4181 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status)) 4182 return -EIO; 4183 4184 return 0; 4185} 4186 4187/* sysfs bluetooth enable ---------------------------------------------- */ 4188static ssize_t bluetooth_enable_show(struct device *dev, 4189 struct device_attribute *attr, 4190 char *buf) 4191{ 4192 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID, 4193 attr, buf); 4194} 4195 4196static ssize_t bluetooth_enable_store(struct device *dev, 4197 struct device_attribute *attr, 4198 const char *buf, size_t count) 4199{ 4200 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID, 4201 attr, buf, count); 4202} 4203 4204static DEVICE_ATTR_RW(bluetooth_enable); 4205 4206/* --------------------------------------------------------------------- */ 4207 4208static struct attribute *bluetooth_attributes[] = { 4209 &dev_attr_bluetooth_enable.attr, 4210 NULL 4211}; 4212 4213static umode_t bluetooth_attr_is_visible(struct kobject *kobj, 4214 struct attribute *attr, int n) 4215{ 4216 return tp_features.bluetooth ? attr->mode : 0; 4217} 4218 4219static const struct attribute_group bluetooth_attr_group = { 4220 .is_visible = bluetooth_attr_is_visible, 4221 .attrs = bluetooth_attributes, 4222}; 4223 4224static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = { 4225 .get_status = bluetooth_get_status, 4226 .set_status = bluetooth_set_status, 4227}; 4228 4229static void bluetooth_shutdown(void) 4230{ 4231 /* Order firmware to save current state to NVRAM */ 4232 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd", 4233 TP_ACPI_BLTH_SAVE_STATE)) 4234 pr_notice("failed to save bluetooth state to NVRAM\n"); 4235 else 4236 vdbg_printk(TPACPI_DBG_RFKILL, 4237 "bluetooth state saved to NVRAM\n"); 4238} 4239 4240static void bluetooth_exit(void) 4241{ 4242 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID); 4243 bluetooth_shutdown(); 4244} 4245 4246static const struct dmi_system_id fwbug_list[] __initconst = { 4247 { 4248 .ident = "ThinkPad E485", 4249 .driver_data = &quirk_btusb_bug, 4250 .matches = { 4251 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4252 DMI_MATCH(DMI_BOARD_NAME, "20KU"), 4253 }, 4254 }, 4255 { 4256 .ident = "ThinkPad E585", 4257 .driver_data = &quirk_btusb_bug, 4258 .matches = { 4259 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4260 DMI_MATCH(DMI_BOARD_NAME, "20KV"), 4261 }, 4262 }, 4263 { 4264 .ident = "ThinkPad A285 - 20MW", 4265 .driver_data = &quirk_btusb_bug, 4266 .matches = { 4267 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4268 DMI_MATCH(DMI_BOARD_NAME, "20MW"), 4269 }, 4270 }, 4271 { 4272 .ident = "ThinkPad A285 - 20MX", 4273 .driver_data = &quirk_btusb_bug, 4274 .matches = { 4275 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4276 DMI_MATCH(DMI_BOARD_NAME, "20MX"), 4277 }, 4278 }, 4279 { 4280 .ident = "ThinkPad A485 - 20MU", 4281 .driver_data = &quirk_btusb_bug, 4282 .matches = { 4283 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4284 DMI_MATCH(DMI_BOARD_NAME, "20MU"), 4285 }, 4286 }, 4287 { 4288 .ident = "ThinkPad A485 - 20MV", 4289 .driver_data = &quirk_btusb_bug, 4290 .matches = { 4291 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4292 DMI_MATCH(DMI_BOARD_NAME, "20MV"), 4293 }, 4294 }, 4295 {} 4296}; 4297 4298static const struct pci_device_id fwbug_cards_ids[] __initconst = { 4299 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24F3) }, 4300 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24FD) }, 4301 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x2526) }, 4302 {} 4303}; 4304 4305 4306static int __init have_bt_fwbug(void) 4307{ 4308 /* 4309 * Some AMD based ThinkPads have a firmware bug that calling 4310 * "GBDC" will cause bluetooth on Intel wireless cards blocked 4311 */ 4312 if (tp_features.quirks && tp_features.quirks->btusb_bug && 4313 pci_dev_present(fwbug_cards_ids)) { 4314 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4315 FW_BUG "disable bluetooth subdriver for Intel cards\n"); 4316 return 1; 4317 } else 4318 return 0; 4319} 4320 4321static int __init bluetooth_init(struct ibm_init_struct *iibm) 4322{ 4323 int res; 4324 int status = 0; 4325 4326 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4327 "initializing bluetooth subdriver\n"); 4328 4329 TPACPI_ACPIHANDLE_INIT(hkey); 4330 4331 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, 4332 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */ 4333 tp_features.bluetooth = !have_bt_fwbug() && hkey_handle && 4334 acpi_evalf(hkey_handle, &status, "GBDC", "qd"); 4335 4336 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4337 "bluetooth is %s, status 0x%02x\n", 4338 str_supported(tp_features.bluetooth), 4339 status); 4340 4341#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4342 if (dbg_bluetoothemul) { 4343 tp_features.bluetooth = 1; 4344 pr_info("bluetooth switch emulation enabled\n"); 4345 } else 4346#endif 4347 if (tp_features.bluetooth && 4348 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) { 4349 /* no bluetooth hardware present in system */ 4350 tp_features.bluetooth = 0; 4351 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4352 "bluetooth hardware not installed\n"); 4353 } 4354 4355 if (!tp_features.bluetooth) 4356 return -ENODEV; 4357 4358 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID, 4359 &bluetooth_tprfk_ops, 4360 RFKILL_TYPE_BLUETOOTH, 4361 TPACPI_RFK_BLUETOOTH_SW_NAME, 4362 true); 4363 return res; 4364} 4365 4366/* procfs -------------------------------------------------------------- */ 4367static int bluetooth_read(struct seq_file *m) 4368{ 4369 return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, m); 4370} 4371 4372static int bluetooth_write(char *buf) 4373{ 4374 return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf); 4375} 4376 4377static struct ibm_struct bluetooth_driver_data = { 4378 .name = "bluetooth", 4379 .read = bluetooth_read, 4380 .write = bluetooth_write, 4381 .exit = bluetooth_exit, 4382 .shutdown = bluetooth_shutdown, 4383}; 4384 4385/************************************************************************* 4386 * Wan subdriver 4387 */ 4388 4389enum { 4390 /* ACPI GWAN/SWAN bits */ 4391 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */ 4392 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */ 4393 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume: 4394 0 = disable, 1 = enable */ 4395}; 4396 4397#define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw" 4398 4399static int wan_get_status(void) 4400{ 4401 int status; 4402 4403#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4404 if (dbg_wwanemul) 4405 return (tpacpi_wwan_emulstate) ? 4406 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4407#endif 4408 4409 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d")) 4410 return -EIO; 4411 4412 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ? 4413 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4414} 4415 4416static int wan_set_status(enum tpacpi_rfkill_state state) 4417{ 4418 int status; 4419 4420 vdbg_printk(TPACPI_DBG_RFKILL, "will attempt to %s wwan\n", 4421 str_enable_disable(state == TPACPI_RFK_RADIO_ON)); 4422 4423#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4424 if (dbg_wwanemul) { 4425 tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON); 4426 return 0; 4427 } 4428#endif 4429 4430 if (state == TPACPI_RFK_RADIO_ON) 4431 status = TP_ACPI_WANCARD_RADIOSSW 4432 | TP_ACPI_WANCARD_RESUMECTRL; 4433 else 4434 status = 0; 4435 4436 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status)) 4437 return -EIO; 4438 4439 return 0; 4440} 4441 4442/* sysfs wan enable ---------------------------------------------------- */ 4443static ssize_t wan_enable_show(struct device *dev, 4444 struct device_attribute *attr, 4445 char *buf) 4446{ 4447 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID, 4448 attr, buf); 4449} 4450 4451static ssize_t wan_enable_store(struct device *dev, 4452 struct device_attribute *attr, 4453 const char *buf, size_t count) 4454{ 4455 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID, 4456 attr, buf, count); 4457} 4458 4459static DEVICE_ATTR(wwan_enable, S_IWUSR | S_IRUGO, 4460 wan_enable_show, wan_enable_store); 4461 4462/* --------------------------------------------------------------------- */ 4463 4464static struct attribute *wan_attributes[] = { 4465 &dev_attr_wwan_enable.attr, 4466 NULL 4467}; 4468 4469static umode_t wan_attr_is_visible(struct kobject *kobj, struct attribute *attr, 4470 int n) 4471{ 4472 return tp_features.wan ? attr->mode : 0; 4473} 4474 4475static const struct attribute_group wan_attr_group = { 4476 .is_visible = wan_attr_is_visible, 4477 .attrs = wan_attributes, 4478}; 4479 4480static const struct tpacpi_rfk_ops wan_tprfk_ops = { 4481 .get_status = wan_get_status, 4482 .set_status = wan_set_status, 4483}; 4484 4485static void wan_shutdown(void) 4486{ 4487 /* Order firmware to save current state to NVRAM */ 4488 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd", 4489 TP_ACPI_WGSV_SAVE_STATE)) 4490 pr_notice("failed to save WWAN state to NVRAM\n"); 4491 else 4492 vdbg_printk(TPACPI_DBG_RFKILL, 4493 "WWAN state saved to NVRAM\n"); 4494} 4495 4496static void wan_exit(void) 4497{ 4498 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID); 4499 wan_shutdown(); 4500} 4501 4502static int __init wan_init(struct ibm_init_struct *iibm) 4503{ 4504 int res; 4505 int status = 0; 4506 4507 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4508 "initializing wan subdriver\n"); 4509 4510 TPACPI_ACPIHANDLE_INIT(hkey); 4511 4512 tp_features.wan = hkey_handle && 4513 acpi_evalf(hkey_handle, &status, "GWAN", "qd"); 4514 4515 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4516 "wan is %s, status 0x%02x\n", 4517 str_supported(tp_features.wan), 4518 status); 4519 4520#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4521 if (dbg_wwanemul) { 4522 tp_features.wan = 1; 4523 pr_info("wwan switch emulation enabled\n"); 4524 } else 4525#endif 4526 if (tp_features.wan && 4527 !(status & TP_ACPI_WANCARD_HWPRESENT)) { 4528 /* no wan hardware present in system */ 4529 tp_features.wan = 0; 4530 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4531 "wan hardware not installed\n"); 4532 } 4533 4534 if (!tp_features.wan) 4535 return -ENODEV; 4536 4537 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID, 4538 &wan_tprfk_ops, 4539 RFKILL_TYPE_WWAN, 4540 TPACPI_RFK_WWAN_SW_NAME, 4541 true); 4542 return res; 4543} 4544 4545/* procfs -------------------------------------------------------------- */ 4546static int wan_read(struct seq_file *m) 4547{ 4548 return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, m); 4549} 4550 4551static int wan_write(char *buf) 4552{ 4553 return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf); 4554} 4555 4556static struct ibm_struct wan_driver_data = { 4557 .name = "wan", 4558 .read = wan_read, 4559 .write = wan_write, 4560 .exit = wan_exit, 4561 .shutdown = wan_shutdown, 4562}; 4563 4564/************************************************************************* 4565 * UWB subdriver 4566 */ 4567 4568enum { 4569 /* ACPI GUWB/SUWB bits */ 4570 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */ 4571 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */ 4572}; 4573 4574#define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw" 4575 4576static int uwb_get_status(void) 4577{ 4578 int status; 4579 4580#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4581 if (dbg_uwbemul) 4582 return (tpacpi_uwb_emulstate) ? 4583 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4584#endif 4585 4586 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d")) 4587 return -EIO; 4588 4589 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ? 4590 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4591} 4592 4593static int uwb_set_status(enum tpacpi_rfkill_state state) 4594{ 4595 int status; 4596 4597 vdbg_printk(TPACPI_DBG_RFKILL, "will attempt to %s UWB\n", 4598 str_enable_disable(state == TPACPI_RFK_RADIO_ON)); 4599 4600#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4601 if (dbg_uwbemul) { 4602 tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON); 4603 return 0; 4604 } 4605#endif 4606 4607 if (state == TPACPI_RFK_RADIO_ON) 4608 status = TP_ACPI_UWB_RADIOSSW; 4609 else 4610 status = 0; 4611 4612 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status)) 4613 return -EIO; 4614 4615 return 0; 4616} 4617 4618/* --------------------------------------------------------------------- */ 4619 4620static const struct tpacpi_rfk_ops uwb_tprfk_ops = { 4621 .get_status = uwb_get_status, 4622 .set_status = uwb_set_status, 4623}; 4624 4625static void uwb_exit(void) 4626{ 4627 tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID); 4628} 4629 4630static int __init uwb_init(struct ibm_init_struct *iibm) 4631{ 4632 int res; 4633 int status = 0; 4634 4635 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4636 "initializing uwb subdriver\n"); 4637 4638 TPACPI_ACPIHANDLE_INIT(hkey); 4639 4640 tp_features.uwb = hkey_handle && 4641 acpi_evalf(hkey_handle, &status, "GUWB", "qd"); 4642 4643 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4644 "uwb is %s, status 0x%02x\n", 4645 str_supported(tp_features.uwb), 4646 status); 4647 4648#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4649 if (dbg_uwbemul) { 4650 tp_features.uwb = 1; 4651 pr_info("uwb switch emulation enabled\n"); 4652 } else 4653#endif 4654 if (tp_features.uwb && 4655 !(status & TP_ACPI_UWB_HWPRESENT)) { 4656 /* no uwb hardware present in system */ 4657 tp_features.uwb = 0; 4658 dbg_printk(TPACPI_DBG_INIT, 4659 "uwb hardware not installed\n"); 4660 } 4661 4662 if (!tp_features.uwb) 4663 return -ENODEV; 4664 4665 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID, 4666 &uwb_tprfk_ops, 4667 RFKILL_TYPE_UWB, 4668 TPACPI_RFK_UWB_SW_NAME, 4669 false); 4670 return res; 4671} 4672 4673static struct ibm_struct uwb_driver_data = { 4674 .name = "uwb", 4675 .exit = uwb_exit, 4676 .flags.experimental = 1, 4677}; 4678 4679/************************************************************************* 4680 * Video subdriver 4681 */ 4682 4683#ifdef CONFIG_THINKPAD_ACPI_VIDEO 4684 4685enum video_access_mode { 4686 TPACPI_VIDEO_NONE = 0, 4687 TPACPI_VIDEO_570, /* 570 */ 4688 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */ 4689 TPACPI_VIDEO_NEW, /* all others */ 4690}; 4691 4692enum { /* video status flags, based on VIDEO_570 */ 4693 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */ 4694 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */ 4695 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */ 4696}; 4697 4698enum { /* TPACPI_VIDEO_570 constants */ 4699 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */ 4700 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to 4701 * video_status_flags */ 4702 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */ 4703 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */ 4704}; 4705 4706static enum video_access_mode video_supported; 4707static int video_orig_autosw; 4708 4709static int video_autosw_get(void); 4710static int video_autosw_set(int enable); 4711 4712TPACPI_HANDLE(vid, root, 4713 "\\_SB.PCI.AGP.VGA", /* 570 */ 4714 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */ 4715 "\\_SB.PCI0.VID0", /* 770e */ 4716 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */ 4717 "\\_SB.PCI0.AGP.VGA", /* X100e and a few others */ 4718 "\\_SB.PCI0.AGP.VID", /* all others */ 4719 ); /* R30, R31 */ 4720 4721TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */ 4722 4723static int __init video_init(struct ibm_init_struct *iibm) 4724{ 4725 int ivga; 4726 4727 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n"); 4728 4729 TPACPI_ACPIHANDLE_INIT(vid); 4730 if (tpacpi_is_ibm()) 4731 TPACPI_ACPIHANDLE_INIT(vid2); 4732 4733 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga) 4734 /* G41, assume IVGA doesn't change */ 4735 vid_handle = vid2_handle; 4736 4737 if (!vid_handle) 4738 /* video switching not supported on R30, R31 */ 4739 video_supported = TPACPI_VIDEO_NONE; 4740 else if (tpacpi_is_ibm() && 4741 acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd")) 4742 /* 570 */ 4743 video_supported = TPACPI_VIDEO_570; 4744 else if (tpacpi_is_ibm() && 4745 acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd")) 4746 /* 600e/x, 770e, 770x */ 4747 video_supported = TPACPI_VIDEO_770; 4748 else 4749 /* all others */ 4750 video_supported = TPACPI_VIDEO_NEW; 4751 4752 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n", 4753 str_supported(video_supported != TPACPI_VIDEO_NONE), 4754 video_supported); 4755 4756 return (video_supported != TPACPI_VIDEO_NONE) ? 0 : -ENODEV; 4757} 4758 4759static void video_exit(void) 4760{ 4761 dbg_printk(TPACPI_DBG_EXIT, 4762 "restoring original video autoswitch mode\n"); 4763 if (video_autosw_set(video_orig_autosw)) 4764 pr_err("error while trying to restore original video autoswitch mode\n"); 4765} 4766 4767static int video_outputsw_get(void) 4768{ 4769 int status = 0; 4770 int i; 4771 4772 switch (video_supported) { 4773 case TPACPI_VIDEO_570: 4774 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd", 4775 TP_ACPI_VIDEO_570_PHSCMD)) 4776 return -EIO; 4777 status = i & TP_ACPI_VIDEO_570_PHSMASK; 4778 break; 4779 case TPACPI_VIDEO_770: 4780 if (!acpi_evalf(NULL, &i, "\\VCDL", "d")) 4781 return -EIO; 4782 if (i) 4783 status |= TP_ACPI_VIDEO_S_LCD; 4784 if (!acpi_evalf(NULL, &i, "\\VCDC", "d")) 4785 return -EIO; 4786 if (i) 4787 status |= TP_ACPI_VIDEO_S_CRT; 4788 break; 4789 case TPACPI_VIDEO_NEW: 4790 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) || 4791 !acpi_evalf(NULL, &i, "\\VCDC", "d")) 4792 return -EIO; 4793 if (i) 4794 status |= TP_ACPI_VIDEO_S_CRT; 4795 4796 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) || 4797 !acpi_evalf(NULL, &i, "\\VCDL", "d")) 4798 return -EIO; 4799 if (i) 4800 status |= TP_ACPI_VIDEO_S_LCD; 4801 if (!acpi_evalf(NULL, &i, "\\VCDD", "d")) 4802 return -EIO; 4803 if (i) 4804 status |= TP_ACPI_VIDEO_S_DVI; 4805 break; 4806 default: 4807 return -ENOSYS; 4808 } 4809 4810 return status; 4811} 4812 4813static int video_outputsw_set(int status) 4814{ 4815 int autosw; 4816 int res = 0; 4817 4818 switch (video_supported) { 4819 case TPACPI_VIDEO_570: 4820 res = acpi_evalf(NULL, NULL, 4821 "\\_SB.PHS2", "vdd", 4822 TP_ACPI_VIDEO_570_PHS2CMD, 4823 status | TP_ACPI_VIDEO_570_PHS2SET); 4824 break; 4825 case TPACPI_VIDEO_770: 4826 autosw = video_autosw_get(); 4827 if (autosw < 0) 4828 return autosw; 4829 4830 res = video_autosw_set(1); 4831 if (res) 4832 return res; 4833 res = acpi_evalf(vid_handle, NULL, 4834 "ASWT", "vdd", status * 0x100, 0); 4835 if (!autosw && video_autosw_set(autosw)) { 4836 pr_err("video auto-switch left enabled due to error\n"); 4837 return -EIO; 4838 } 4839 break; 4840 case TPACPI_VIDEO_NEW: 4841 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) && 4842 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1); 4843 break; 4844 default: 4845 return -ENOSYS; 4846 } 4847 4848 return (res) ? 0 : -EIO; 4849} 4850 4851static int video_autosw_get(void) 4852{ 4853 int autosw = 0; 4854 4855 switch (video_supported) { 4856 case TPACPI_VIDEO_570: 4857 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d")) 4858 return -EIO; 4859 break; 4860 case TPACPI_VIDEO_770: 4861 case TPACPI_VIDEO_NEW: 4862 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d")) 4863 return -EIO; 4864 break; 4865 default: 4866 return -ENOSYS; 4867 } 4868 4869 return autosw & 1; 4870} 4871 4872static int video_autosw_set(int enable) 4873{ 4874 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable) ? 1 : 0)) 4875 return -EIO; 4876 return 0; 4877} 4878 4879static int video_outputsw_cycle(void) 4880{ 4881 int autosw = video_autosw_get(); 4882 int res; 4883 4884 if (autosw < 0) 4885 return autosw; 4886 4887 switch (video_supported) { 4888 case TPACPI_VIDEO_570: 4889 res = video_autosw_set(1); 4890 if (res) 4891 return res; 4892 res = acpi_evalf(ec_handle, NULL, "_Q16", "v"); 4893 break; 4894 case TPACPI_VIDEO_770: 4895 case TPACPI_VIDEO_NEW: 4896 res = video_autosw_set(1); 4897 if (res) 4898 return res; 4899 res = acpi_evalf(vid_handle, NULL, "VSWT", "v"); 4900 break; 4901 default: 4902 return -ENOSYS; 4903 } 4904 if (!autosw && video_autosw_set(autosw)) { 4905 pr_err("video auto-switch left enabled due to error\n"); 4906 return -EIO; 4907 } 4908 4909 return (res) ? 0 : -EIO; 4910} 4911 4912static int video_expand_toggle(void) 4913{ 4914 switch (video_supported) { 4915 case TPACPI_VIDEO_570: 4916 return acpi_evalf(ec_handle, NULL, "_Q17", "v") ? 4917 0 : -EIO; 4918 case TPACPI_VIDEO_770: 4919 return acpi_evalf(vid_handle, NULL, "VEXP", "v") ? 4920 0 : -EIO; 4921 case TPACPI_VIDEO_NEW: 4922 return acpi_evalf(NULL, NULL, "\\VEXP", "v") ? 4923 0 : -EIO; 4924 default: 4925 return -ENOSYS; 4926 } 4927 /* not reached */ 4928} 4929 4930static int video_read(struct seq_file *m) 4931{ 4932 int status, autosw; 4933 4934 if (video_supported == TPACPI_VIDEO_NONE) { 4935 seq_printf(m, "status:\t\tnot supported\n"); 4936 return 0; 4937 } 4938 4939 /* Even reads can crash X.org, so... */ 4940 if (!capable(CAP_SYS_ADMIN)) 4941 return -EPERM; 4942 4943 status = video_outputsw_get(); 4944 if (status < 0) 4945 return status; 4946 4947 autosw = video_autosw_get(); 4948 if (autosw < 0) 4949 return autosw; 4950 4951 seq_printf(m, "status:\t\tsupported\n"); 4952 seq_printf(m, "lcd:\t\t%s\n", str_enabled_disabled(status & BIT(0))); 4953 seq_printf(m, "crt:\t\t%s\n", str_enabled_disabled(status & BIT(1))); 4954 if (video_supported == TPACPI_VIDEO_NEW) 4955 seq_printf(m, "dvi:\t\t%s\n", str_enabled_disabled(status & BIT(3))); 4956 seq_printf(m, "auto:\t\t%s\n", str_enabled_disabled(autosw & BIT(0))); 4957 seq_printf(m, "commands:\tlcd_enable, lcd_disable\n"); 4958 seq_printf(m, "commands:\tcrt_enable, crt_disable\n"); 4959 if (video_supported == TPACPI_VIDEO_NEW) 4960 seq_printf(m, "commands:\tdvi_enable, dvi_disable\n"); 4961 seq_printf(m, "commands:\tauto_enable, auto_disable\n"); 4962 seq_printf(m, "commands:\tvideo_switch, expand_toggle\n"); 4963 4964 return 0; 4965} 4966 4967static int video_write(char *buf) 4968{ 4969 char *cmd; 4970 int enable, disable, status; 4971 int res; 4972 4973 if (video_supported == TPACPI_VIDEO_NONE) 4974 return -ENODEV; 4975 4976 /* Even reads can crash X.org, let alone writes... */ 4977 if (!capable(CAP_SYS_ADMIN)) 4978 return -EPERM; 4979 4980 enable = 0; 4981 disable = 0; 4982 4983 while ((cmd = strsep(&buf, ","))) { 4984 if (strstarts(cmd, "lcd_enable")) { 4985 enable |= TP_ACPI_VIDEO_S_LCD; 4986 } else if (strstarts(cmd, "lcd_disable")) { 4987 disable |= TP_ACPI_VIDEO_S_LCD; 4988 } else if (strstarts(cmd, "crt_enable")) { 4989 enable |= TP_ACPI_VIDEO_S_CRT; 4990 } else if (strstarts(cmd, "crt_disable")) { 4991 disable |= TP_ACPI_VIDEO_S_CRT; 4992 } else if (video_supported == TPACPI_VIDEO_NEW && 4993 strstarts(cmd, "dvi_enable")) { 4994 enable |= TP_ACPI_VIDEO_S_DVI; 4995 } else if (video_supported == TPACPI_VIDEO_NEW && 4996 strstarts(cmd, "dvi_disable")) { 4997 disable |= TP_ACPI_VIDEO_S_DVI; 4998 } else if (strstarts(cmd, "auto_enable")) { 4999 res = video_autosw_set(1); 5000 if (res) 5001 return res; 5002 } else if (strstarts(cmd, "auto_disable")) { 5003 res = video_autosw_set(0); 5004 if (res) 5005 return res; 5006 } else if (strstarts(cmd, "video_switch")) { 5007 res = video_outputsw_cycle(); 5008 if (res) 5009 return res; 5010 } else if (strstarts(cmd, "expand_toggle")) { 5011 res = video_expand_toggle(); 5012 if (res) 5013 return res; 5014 } else 5015 return -EINVAL; 5016 } 5017 5018 if (enable || disable) { 5019 status = video_outputsw_get(); 5020 if (status < 0) 5021 return status; 5022 res = video_outputsw_set((status & ~disable) | enable); 5023 if (res) 5024 return res; 5025 } 5026 5027 return 0; 5028} 5029 5030static struct ibm_struct video_driver_data = { 5031 .name = "video", 5032 .read = video_read, 5033 .write = video_write, 5034 .exit = video_exit, 5035}; 5036 5037#endif /* CONFIG_THINKPAD_ACPI_VIDEO */ 5038 5039/************************************************************************* 5040 * Keyboard backlight subdriver 5041 */ 5042 5043static enum led_brightness kbdlight_brightness; 5044static DEFINE_MUTEX(kbdlight_mutex); 5045 5046static int kbdlight_set_level(int level) 5047{ 5048 int ret = 0; 5049 5050 if (!hkey_handle) 5051 return -ENXIO; 5052 5053 mutex_lock(&kbdlight_mutex); 5054 5055 if (!acpi_evalf(hkey_handle, NULL, "MLCS", "dd", level)) 5056 ret = -EIO; 5057 else 5058 kbdlight_brightness = level; 5059 5060 mutex_unlock(&kbdlight_mutex); 5061 5062 return ret; 5063} 5064 5065static int kbdlight_get_level(void) 5066{ 5067 int status = 0; 5068 5069 if (!hkey_handle) 5070 return -ENXIO; 5071 5072 if (!acpi_evalf(hkey_handle, &status, "MLCG", "dd", 0)) 5073 return -EIO; 5074 5075 if (status < 0) 5076 return status; 5077 5078 return status & 0x3; 5079} 5080 5081static bool kbdlight_is_supported(void) 5082{ 5083 int status = 0; 5084 5085 if (!hkey_handle) 5086 return false; 5087 5088 if (!acpi_has_method(hkey_handle, "MLCG")) { 5089 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG is unavailable\n"); 5090 return false; 5091 } 5092 5093 if (!acpi_evalf(hkey_handle, &status, "MLCG", "qdd", 0)) { 5094 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG failed\n"); 5095 return false; 5096 } 5097 5098 if (status < 0) { 5099 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG err: %d\n", status); 5100 return false; 5101 } 5102 5103 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG returned 0x%x\n", status); 5104 /* 5105 * Guessed test for keyboard backlight: 5106 * 5107 * Machines with backlight keyboard return: 5108 * b010100000010000000XX - ThinkPad X1 Carbon 3rd 5109 * b110100010010000000XX - ThinkPad x230 5110 * b010100000010000000XX - ThinkPad x240 5111 * b010100000010000000XX - ThinkPad W541 5112 * (XX is current backlight level) 5113 * 5114 * Machines without backlight keyboard return: 5115 * b10100001000000000000 - ThinkPad x230 5116 * b10110001000000000000 - ThinkPad E430 5117 * b00000000000000000000 - ThinkPad E450 5118 * 5119 * Candidate BITs for detection test (XOR): 5120 * b01000000001000000000 5121 * ^ 5122 */ 5123 return status & BIT(9); 5124} 5125 5126static int kbdlight_sysfs_set(struct led_classdev *led_cdev, 5127 enum led_brightness brightness) 5128{ 5129 return kbdlight_set_level(brightness); 5130} 5131 5132static enum led_brightness kbdlight_sysfs_get(struct led_classdev *led_cdev) 5133{ 5134 int level; 5135 5136 level = kbdlight_get_level(); 5137 if (level < 0) 5138 return 0; 5139 5140 return level; 5141} 5142 5143static struct tpacpi_led_classdev tpacpi_led_kbdlight = { 5144 .led_classdev = { 5145 .name = "tpacpi::kbd_backlight", 5146 .max_brightness = 2, 5147 .flags = LED_BRIGHT_HW_CHANGED, 5148 .brightness_set_blocking = &kbdlight_sysfs_set, 5149 .brightness_get = &kbdlight_sysfs_get, 5150 } 5151}; 5152 5153static int __init kbdlight_init(struct ibm_init_struct *iibm) 5154{ 5155 int rc; 5156 5157 vdbg_printk(TPACPI_DBG_INIT, "initializing kbdlight subdriver\n"); 5158 5159 TPACPI_ACPIHANDLE_INIT(hkey); 5160 5161 if (!kbdlight_is_supported()) { 5162 tp_features.kbdlight = 0; 5163 vdbg_printk(TPACPI_DBG_INIT, "kbdlight is unsupported\n"); 5164 return -ENODEV; 5165 } 5166 5167 kbdlight_brightness = kbdlight_sysfs_get(NULL); 5168 tp_features.kbdlight = 1; 5169 5170 rc = led_classdev_register(&tpacpi_pdev->dev, 5171 &tpacpi_led_kbdlight.led_classdev); 5172 if (rc < 0) { 5173 tp_features.kbdlight = 0; 5174 return rc; 5175 } 5176 5177 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask | 5178 TP_ACPI_HKEY_KBD_LIGHT_MASK); 5179 return 0; 5180} 5181 5182static void kbdlight_exit(void) 5183{ 5184 led_classdev_unregister(&tpacpi_led_kbdlight.led_classdev); 5185} 5186 5187static int kbdlight_set_level_and_update(int level) 5188{ 5189 int ret; 5190 struct led_classdev *led_cdev; 5191 5192 ret = kbdlight_set_level(level); 5193 led_cdev = &tpacpi_led_kbdlight.led_classdev; 5194 5195 if (ret == 0 && !(led_cdev->flags & LED_SUSPENDED)) 5196 led_cdev->brightness = level; 5197 5198 return ret; 5199} 5200 5201static int kbdlight_read(struct seq_file *m) 5202{ 5203 int level; 5204 5205 if (!tp_features.kbdlight) { 5206 seq_printf(m, "status:\t\tnot supported\n"); 5207 } else { 5208 level = kbdlight_get_level(); 5209 if (level < 0) 5210 seq_printf(m, "status:\t\terror %d\n", level); 5211 else 5212 seq_printf(m, "status:\t\t%d\n", level); 5213 seq_printf(m, "commands:\t0, 1, 2\n"); 5214 } 5215 5216 return 0; 5217} 5218 5219static int kbdlight_write(char *buf) 5220{ 5221 char *cmd; 5222 int res, level = -EINVAL; 5223 5224 if (!tp_features.kbdlight) 5225 return -ENODEV; 5226 5227 while ((cmd = strsep(&buf, ","))) { 5228 res = kstrtoint(cmd, 10, &level); 5229 if (res < 0) 5230 return res; 5231 } 5232 5233 if (level >= 3 || level < 0) 5234 return -EINVAL; 5235 5236 return kbdlight_set_level_and_update(level); 5237} 5238 5239static void kbdlight_suspend(void) 5240{ 5241 struct led_classdev *led_cdev; 5242 5243 if (!tp_features.kbdlight) 5244 return; 5245 5246 led_cdev = &tpacpi_led_kbdlight.led_classdev; 5247 led_update_brightness(led_cdev); 5248 led_classdev_suspend(led_cdev); 5249} 5250 5251static void kbdlight_resume(void) 5252{ 5253 if (!tp_features.kbdlight) 5254 return; 5255 5256 led_classdev_resume(&tpacpi_led_kbdlight.led_classdev); 5257} 5258 5259static struct ibm_struct kbdlight_driver_data = { 5260 .name = "kbdlight", 5261 .read = kbdlight_read, 5262 .write = kbdlight_write, 5263 .suspend = kbdlight_suspend, 5264 .resume = kbdlight_resume, 5265 .exit = kbdlight_exit, 5266}; 5267 5268/************************************************************************* 5269 * Light (thinklight) subdriver 5270 */ 5271 5272TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */ 5273TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */ 5274 5275static int light_get_status(void) 5276{ 5277 int status = 0; 5278 5279 if (tp_features.light_status) { 5280 if (!acpi_evalf(ec_handle, &status, "KBLT", "d")) 5281 return -EIO; 5282 return (!!status); 5283 } 5284 5285 return -ENXIO; 5286} 5287 5288static int light_set_status(int status) 5289{ 5290 int rc; 5291 5292 if (tp_features.light) { 5293 if (cmos_handle) { 5294 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd", 5295 (status) ? 5296 TP_CMOS_THINKLIGHT_ON : 5297 TP_CMOS_THINKLIGHT_OFF); 5298 } else { 5299 rc = acpi_evalf(lght_handle, NULL, NULL, "vd", 5300 (status) ? 1 : 0); 5301 } 5302 return (rc) ? 0 : -EIO; 5303 } 5304 5305 return -ENXIO; 5306} 5307 5308static int light_sysfs_set(struct led_classdev *led_cdev, 5309 enum led_brightness brightness) 5310{ 5311 return light_set_status((brightness != LED_OFF) ? 5312 TPACPI_LED_ON : TPACPI_LED_OFF); 5313} 5314 5315static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev) 5316{ 5317 return (light_get_status() == 1) ? LED_ON : LED_OFF; 5318} 5319 5320static struct tpacpi_led_classdev tpacpi_led_thinklight = { 5321 .led_classdev = { 5322 .name = "tpacpi::thinklight", 5323 .max_brightness = 1, 5324 .brightness_set_blocking = &light_sysfs_set, 5325 .brightness_get = &light_sysfs_get, 5326 } 5327}; 5328 5329static int __init light_init(struct ibm_init_struct *iibm) 5330{ 5331 int rc; 5332 5333 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n"); 5334 5335 if (tpacpi_is_ibm()) { 5336 TPACPI_ACPIHANDLE_INIT(ledb); 5337 TPACPI_ACPIHANDLE_INIT(lght); 5338 } 5339 TPACPI_ACPIHANDLE_INIT(cmos); 5340 5341 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */ 5342 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle; 5343 5344 if (tp_features.light) 5345 /* light status not supported on 5346 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */ 5347 tp_features.light_status = 5348 acpi_evalf(ec_handle, NULL, "KBLT", "qv"); 5349 5350 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n", 5351 str_supported(tp_features.light), 5352 str_supported(tp_features.light_status)); 5353 5354 if (!tp_features.light) 5355 return -ENODEV; 5356 5357 rc = led_classdev_register(&tpacpi_pdev->dev, 5358 &tpacpi_led_thinklight.led_classdev); 5359 5360 if (rc < 0) { 5361 tp_features.light = 0; 5362 tp_features.light_status = 0; 5363 } else { 5364 rc = 0; 5365 } 5366 5367 return rc; 5368} 5369 5370static void light_exit(void) 5371{ 5372 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev); 5373} 5374 5375static int light_read(struct seq_file *m) 5376{ 5377 int status; 5378 5379 if (!tp_features.light) { 5380 seq_printf(m, "status:\t\tnot supported\n"); 5381 } else if (!tp_features.light_status) { 5382 seq_printf(m, "status:\t\tunknown\n"); 5383 seq_printf(m, "commands:\ton, off\n"); 5384 } else { 5385 status = light_get_status(); 5386 if (status < 0) 5387 return status; 5388 seq_printf(m, "status:\t\t%s\n", str_on_off(status & BIT(0))); 5389 seq_printf(m, "commands:\ton, off\n"); 5390 } 5391 5392 return 0; 5393} 5394 5395static int light_write(char *buf) 5396{ 5397 char *cmd; 5398 int newstatus = 0; 5399 5400 if (!tp_features.light) 5401 return -ENODEV; 5402 5403 while ((cmd = strsep(&buf, ","))) { 5404 if (strstarts(cmd, "on")) { 5405 newstatus = 1; 5406 } else if (strstarts(cmd, "off")) { 5407 newstatus = 0; 5408 } else 5409 return -EINVAL; 5410 } 5411 5412 return light_set_status(newstatus); 5413} 5414 5415static struct ibm_struct light_driver_data = { 5416 .name = "light", 5417 .read = light_read, 5418 .write = light_write, 5419 .exit = light_exit, 5420}; 5421 5422/************************************************************************* 5423 * CMOS subdriver 5424 */ 5425 5426/* sysfs cmos_command -------------------------------------------------- */ 5427static ssize_t cmos_command_store(struct device *dev, 5428 struct device_attribute *attr, 5429 const char *buf, size_t count) 5430{ 5431 unsigned long cmos_cmd; 5432 int res; 5433 5434 if (parse_strtoul(buf, 21, &cmos_cmd)) 5435 return -EINVAL; 5436 5437 res = issue_thinkpad_cmos_command(cmos_cmd); 5438 return (res) ? res : count; 5439} 5440 5441static DEVICE_ATTR_WO(cmos_command); 5442 5443static struct attribute *cmos_attributes[] = { 5444 &dev_attr_cmos_command.attr, 5445 NULL 5446}; 5447 5448static umode_t cmos_attr_is_visible(struct kobject *kobj, 5449 struct attribute *attr, int n) 5450{ 5451 return cmos_handle ? attr->mode : 0; 5452} 5453 5454static const struct attribute_group cmos_attr_group = { 5455 .is_visible = cmos_attr_is_visible, 5456 .attrs = cmos_attributes, 5457}; 5458 5459/* --------------------------------------------------------------------- */ 5460 5461static int __init cmos_init(struct ibm_init_struct *iibm) 5462{ 5463 vdbg_printk(TPACPI_DBG_INIT, 5464 "initializing cmos commands subdriver\n"); 5465 5466 TPACPI_ACPIHANDLE_INIT(cmos); 5467 5468 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n", 5469 str_supported(cmos_handle != NULL)); 5470 5471 return cmos_handle ? 0 : -ENODEV; 5472} 5473 5474static int cmos_read(struct seq_file *m) 5475{ 5476 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, 5477 R30, R31, T20-22, X20-21 */ 5478 if (!cmos_handle) 5479 seq_printf(m, "status:\t\tnot supported\n"); 5480 else { 5481 seq_printf(m, "status:\t\tsupported\n"); 5482 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-21)\n"); 5483 } 5484 5485 return 0; 5486} 5487 5488static int cmos_write(char *buf) 5489{ 5490 char *cmd; 5491 int cmos_cmd, res; 5492 5493 while ((cmd = strsep(&buf, ","))) { 5494 if (sscanf(cmd, "%u", &cmos_cmd) == 1 && 5495 cmos_cmd >= 0 && cmos_cmd <= 21) { 5496 /* cmos_cmd set */ 5497 } else 5498 return -EINVAL; 5499 5500 res = issue_thinkpad_cmos_command(cmos_cmd); 5501 if (res) 5502 return res; 5503 } 5504 5505 return 0; 5506} 5507 5508static struct ibm_struct cmos_driver_data = { 5509 .name = "cmos", 5510 .read = cmos_read, 5511 .write = cmos_write, 5512}; 5513 5514/************************************************************************* 5515 * LED subdriver 5516 */ 5517 5518enum led_access_mode { 5519 TPACPI_LED_NONE = 0, 5520 TPACPI_LED_570, /* 570 */ 5521 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ 5522 TPACPI_LED_NEW, /* all others */ 5523}; 5524 5525enum { /* For TPACPI_LED_OLD */ 5526 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */ 5527 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */ 5528 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */ 5529}; 5530 5531static enum led_access_mode led_supported; 5532 5533static acpi_handle led_handle; 5534 5535#define TPACPI_LED_NUMLEDS 16 5536static struct tpacpi_led_classdev *tpacpi_leds; 5537static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS]; 5538static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = { 5539 /* there's a limit of 19 chars + NULL before 2.6.26 */ 5540 "tpacpi::power", 5541 "tpacpi:orange:batt", 5542 "tpacpi:green:batt", 5543 "tpacpi::dock_active", 5544 "tpacpi::bay_active", 5545 "tpacpi::dock_batt", 5546 "tpacpi::unknown_led", 5547 "tpacpi::standby", 5548 "tpacpi::dock_status1", 5549 "tpacpi::dock_status2", 5550 "tpacpi::lid_logo_dot", 5551 "tpacpi::unknown_led3", 5552 "tpacpi::thinkvantage", 5553}; 5554#define TPACPI_SAFE_LEDS 0x1481U 5555 5556static inline bool tpacpi_is_led_restricted(const unsigned int led) 5557{ 5558#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS 5559 return false; 5560#else 5561 return (1U & (TPACPI_SAFE_LEDS >> led)) == 0; 5562#endif 5563} 5564 5565static int led_get_status(const unsigned int led) 5566{ 5567 int status; 5568 enum led_status_t led_s; 5569 5570 switch (led_supported) { 5571 case TPACPI_LED_570: 5572 if (!acpi_evalf(ec_handle, 5573 &status, "GLED", "dd", 1 << led)) 5574 return -EIO; 5575 led_s = (status == 0) ? 5576 TPACPI_LED_OFF : 5577 ((status == 1) ? 5578 TPACPI_LED_ON : 5579 TPACPI_LED_BLINK); 5580 tpacpi_led_state_cache[led] = led_s; 5581 return led_s; 5582 default: 5583 return -ENXIO; 5584 } 5585 5586 /* not reached */ 5587} 5588 5589static int led_set_status(const unsigned int led, 5590 const enum led_status_t ledstatus) 5591{ 5592 /* off, on, blink. Index is led_status_t */ 5593 static const unsigned int led_sled_arg1[] = { 0, 1, 3 }; 5594 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 }; 5595 5596 int rc = 0; 5597 5598 switch (led_supported) { 5599 case TPACPI_LED_570: 5600 /* 570 */ 5601 if (unlikely(led > 7)) 5602 return -EINVAL; 5603 if (unlikely(tpacpi_is_led_restricted(led))) 5604 return -EPERM; 5605 if (!acpi_evalf(led_handle, NULL, NULL, "vdd", 5606 (1 << led), led_sled_arg1[ledstatus])) 5607 return -EIO; 5608 break; 5609 case TPACPI_LED_OLD: 5610 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */ 5611 if (unlikely(led > 7)) 5612 return -EINVAL; 5613 if (unlikely(tpacpi_is_led_restricted(led))) 5614 return -EPERM; 5615 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led)); 5616 if (rc >= 0) 5617 rc = ec_write(TPACPI_LED_EC_HLBL, 5618 (ledstatus == TPACPI_LED_BLINK) << led); 5619 if (rc >= 0) 5620 rc = ec_write(TPACPI_LED_EC_HLCL, 5621 (ledstatus != TPACPI_LED_OFF) << led); 5622 break; 5623 case TPACPI_LED_NEW: 5624 /* all others */ 5625 if (unlikely(led >= TPACPI_LED_NUMLEDS)) 5626 return -EINVAL; 5627 if (unlikely(tpacpi_is_led_restricted(led))) 5628 return -EPERM; 5629 if (!acpi_evalf(led_handle, NULL, NULL, "vdd", 5630 led, led_led_arg1[ledstatus])) 5631 return -EIO; 5632 break; 5633 default: 5634 return -ENXIO; 5635 } 5636 5637 if (!rc) 5638 tpacpi_led_state_cache[led] = ledstatus; 5639 5640 return rc; 5641} 5642 5643static int led_sysfs_set(struct led_classdev *led_cdev, 5644 enum led_brightness brightness) 5645{ 5646 struct tpacpi_led_classdev *data = container_of(led_cdev, 5647 struct tpacpi_led_classdev, led_classdev); 5648 enum led_status_t new_state; 5649 5650 if (brightness == LED_OFF) 5651 new_state = TPACPI_LED_OFF; 5652 else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK) 5653 new_state = TPACPI_LED_ON; 5654 else 5655 new_state = TPACPI_LED_BLINK; 5656 5657 return led_set_status(data->led, new_state); 5658} 5659 5660static int led_sysfs_blink_set(struct led_classdev *led_cdev, 5661 unsigned long *delay_on, unsigned long *delay_off) 5662{ 5663 struct tpacpi_led_classdev *data = container_of(led_cdev, 5664 struct tpacpi_led_classdev, led_classdev); 5665 5666 /* Can we choose the flash rate? */ 5667 if (*delay_on == 0 && *delay_off == 0) { 5668 /* yes. set them to the hardware blink rate (1 Hz) */ 5669 *delay_on = 500; /* ms */ 5670 *delay_off = 500; /* ms */ 5671 } else if ((*delay_on != 500) || (*delay_off != 500)) 5672 return -EINVAL; 5673 5674 return led_set_status(data->led, TPACPI_LED_BLINK); 5675} 5676 5677static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev) 5678{ 5679 int rc; 5680 5681 struct tpacpi_led_classdev *data = container_of(led_cdev, 5682 struct tpacpi_led_classdev, led_classdev); 5683 5684 rc = led_get_status(data->led); 5685 5686 if (rc == TPACPI_LED_OFF || rc < 0) 5687 rc = LED_OFF; /* no error handling in led class :( */ 5688 else 5689 rc = LED_FULL; 5690 5691 return rc; 5692} 5693 5694static void led_exit(void) 5695{ 5696 unsigned int i; 5697 5698 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) 5699 led_classdev_unregister(&tpacpi_leds[i].led_classdev); 5700 5701 kfree(tpacpi_leds); 5702} 5703 5704static int __init tpacpi_init_led(unsigned int led) 5705{ 5706 /* LEDs with no name don't get registered */ 5707 if (!tpacpi_led_names[led]) 5708 return 0; 5709 5710 tpacpi_leds[led].led_classdev.brightness_set_blocking = &led_sysfs_set; 5711 tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set; 5712 if (led_supported == TPACPI_LED_570) 5713 tpacpi_leds[led].led_classdev.brightness_get = &led_sysfs_get; 5714 5715 tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led]; 5716 tpacpi_leds[led].led_classdev.flags = LED_RETAIN_AT_SHUTDOWN; 5717 tpacpi_leds[led].led = led; 5718 5719 return led_classdev_register(&tpacpi_pdev->dev, &tpacpi_leds[led].led_classdev); 5720} 5721 5722static const struct tpacpi_quirk led_useful_qtable[] __initconst = { 5723 TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */ 5724 TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */ 5725 TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */ 5726 5727 TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */ 5728 TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */ 5729 TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */ 5730 TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */ 5731 TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */ 5732 TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */ 5733 TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */ 5734 TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */ 5735 5736 TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */ 5737 TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */ 5738 TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */ 5739 TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */ 5740 TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */ 5741 5742 TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */ 5743 TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */ 5744 TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */ 5745 TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */ 5746 5747 /* (1) - may have excess leds enabled on MSB */ 5748 5749 /* Defaults (order matters, keep last, don't reorder!) */ 5750 { /* Lenovo */ 5751 .vendor = PCI_VENDOR_ID_LENOVO, 5752 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 5753 .quirks = 0x1fffU, 5754 }, 5755 { /* IBM ThinkPads with no EC version string */ 5756 .vendor = PCI_VENDOR_ID_IBM, 5757 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN, 5758 .quirks = 0x00ffU, 5759 }, 5760 { /* IBM ThinkPads with EC version string */ 5761 .vendor = PCI_VENDOR_ID_IBM, 5762 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 5763 .quirks = 0x00bfU, 5764 }, 5765}; 5766 5767static enum led_access_mode __init led_init_detect_mode(void) 5768{ 5769 acpi_status status; 5770 5771 if (tpacpi_is_ibm()) { 5772 /* 570 */ 5773 status = acpi_get_handle(ec_handle, "SLED", &led_handle); 5774 if (ACPI_SUCCESS(status)) 5775 return TPACPI_LED_570; 5776 5777 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ 5778 status = acpi_get_handle(ec_handle, "SYSL", &led_handle); 5779 if (ACPI_SUCCESS(status)) 5780 return TPACPI_LED_OLD; 5781 } 5782 5783 /* most others */ 5784 status = acpi_get_handle(ec_handle, "LED", &led_handle); 5785 if (ACPI_SUCCESS(status)) 5786 return TPACPI_LED_NEW; 5787 5788 /* R30, R31, and unknown firmwares */ 5789 led_handle = NULL; 5790 return TPACPI_LED_NONE; 5791} 5792 5793static int __init led_init(struct ibm_init_struct *iibm) 5794{ 5795 unsigned int i; 5796 int rc; 5797 unsigned long useful_leds; 5798 5799 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n"); 5800 5801 led_supported = led_init_detect_mode(); 5802 5803 if (led_supported != TPACPI_LED_NONE) { 5804 useful_leds = tpacpi_check_quirks(led_useful_qtable, 5805 ARRAY_SIZE(led_useful_qtable)); 5806 5807 if (!useful_leds) { 5808 led_handle = NULL; 5809 led_supported = TPACPI_LED_NONE; 5810 } 5811 } 5812 5813 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n", 5814 str_supported(led_supported), led_supported); 5815 5816 if (led_supported == TPACPI_LED_NONE) 5817 return -ENODEV; 5818 5819 tpacpi_leds = kcalloc(TPACPI_LED_NUMLEDS, sizeof(*tpacpi_leds), 5820 GFP_KERNEL); 5821 if (!tpacpi_leds) { 5822 pr_err("Out of memory for LED data\n"); 5823 return -ENOMEM; 5824 } 5825 5826 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) { 5827 tpacpi_leds[i].led = -1; 5828 5829 if (!tpacpi_is_led_restricted(i) && test_bit(i, &useful_leds)) { 5830 rc = tpacpi_init_led(i); 5831 if (rc < 0) { 5832 led_exit(); 5833 return rc; 5834 } 5835 } 5836 } 5837 5838#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS 5839 pr_notice("warning: userspace override of important firmware LEDs is enabled\n"); 5840#endif 5841 return 0; 5842} 5843 5844#define str_led_status(s) ((s) >= TPACPI_LED_BLINK ? "blinking" : str_on_off(s)) 5845 5846static int led_read(struct seq_file *m) 5847{ 5848 if (!led_supported) { 5849 seq_printf(m, "status:\t\tnot supported\n"); 5850 return 0; 5851 } 5852 seq_printf(m, "status:\t\tsupported\n"); 5853 5854 if (led_supported == TPACPI_LED_570) { 5855 /* 570 */ 5856 int i, status; 5857 for (i = 0; i < 8; i++) { 5858 status = led_get_status(i); 5859 if (status < 0) 5860 return -EIO; 5861 seq_printf(m, "%d:\t\t%s\n", i, str_led_status(status)); 5862 } 5863 } 5864 5865 seq_printf(m, "commands:\t<led> on, <led> off, <led> blink (<led> is 0-15)\n"); 5866 5867 return 0; 5868} 5869 5870static int led_write(char *buf) 5871{ 5872 char *cmd; 5873 int led, rc; 5874 enum led_status_t s; 5875 5876 if (!led_supported) 5877 return -ENODEV; 5878 5879 while ((cmd = strsep(&buf, ","))) { 5880 if (sscanf(cmd, "%d", &led) != 1) 5881 return -EINVAL; 5882 5883 if (led < 0 || led > (TPACPI_LED_NUMLEDS - 1)) 5884 return -ENODEV; 5885 5886 if (tpacpi_leds[led].led < 0) 5887 return -ENODEV; 5888 5889 if (strstr(cmd, "off")) { 5890 s = TPACPI_LED_OFF; 5891 } else if (strstr(cmd, "on")) { 5892 s = TPACPI_LED_ON; 5893 } else if (strstr(cmd, "blink")) { 5894 s = TPACPI_LED_BLINK; 5895 } else { 5896 return -EINVAL; 5897 } 5898 5899 rc = led_set_status(led, s); 5900 if (rc < 0) 5901 return rc; 5902 } 5903 5904 return 0; 5905} 5906 5907static struct ibm_struct led_driver_data = { 5908 .name = "led", 5909 .read = led_read, 5910 .write = led_write, 5911 .exit = led_exit, 5912}; 5913 5914/************************************************************************* 5915 * Beep subdriver 5916 */ 5917 5918TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */ 5919 5920#define TPACPI_BEEP_Q1 0x0001 5921 5922static const struct tpacpi_quirk beep_quirk_table[] __initconst = { 5923 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */ 5924 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */ 5925}; 5926 5927static int __init beep_init(struct ibm_init_struct *iibm) 5928{ 5929 unsigned long quirks; 5930 5931 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n"); 5932 5933 TPACPI_ACPIHANDLE_INIT(beep); 5934 5935 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n", 5936 str_supported(beep_handle != NULL)); 5937 5938 quirks = tpacpi_check_quirks(beep_quirk_table, 5939 ARRAY_SIZE(beep_quirk_table)); 5940 5941 tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1); 5942 5943 return (beep_handle) ? 0 : -ENODEV; 5944} 5945 5946static int beep_read(struct seq_file *m) 5947{ 5948 if (!beep_handle) 5949 seq_printf(m, "status:\t\tnot supported\n"); 5950 else { 5951 seq_printf(m, "status:\t\tsupported\n"); 5952 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-17)\n"); 5953 } 5954 5955 return 0; 5956} 5957 5958static int beep_write(char *buf) 5959{ 5960 char *cmd; 5961 int beep_cmd; 5962 5963 if (!beep_handle) 5964 return -ENODEV; 5965 5966 while ((cmd = strsep(&buf, ","))) { 5967 if (sscanf(cmd, "%u", &beep_cmd) == 1 && 5968 beep_cmd >= 0 && beep_cmd <= 17) { 5969 /* beep_cmd set */ 5970 } else 5971 return -EINVAL; 5972 if (tp_features.beep_needs_two_args) { 5973 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", 5974 beep_cmd, 0)) 5975 return -EIO; 5976 } else { 5977 if (!acpi_evalf(beep_handle, NULL, NULL, "vd", 5978 beep_cmd)) 5979 return -EIO; 5980 } 5981 } 5982 5983 return 0; 5984} 5985 5986static struct ibm_struct beep_driver_data = { 5987 .name = "beep", 5988 .read = beep_read, 5989 .write = beep_write, 5990}; 5991 5992/************************************************************************* 5993 * Thermal subdriver 5994 */ 5995 5996enum thermal_access_mode { 5997 TPACPI_THERMAL_NONE = 0, /* No thermal support */ 5998 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */ 5999 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */ 6000 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */ 6001 TPACPI_THERMAL_TPEC_12, /* Use ACPI EC regs, 12 sensors */ 6002 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */ 6003}; 6004 6005enum { /* TPACPI_THERMAL_TPEC_* */ 6006 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */ 6007 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */ 6008 TP_EC_THERMAL_TMP0_NS = 0xA8, /* ACPI EC Non-Standard regs TMP 0..7 */ 6009 TP_EC_THERMAL_TMP8_NS = 0xB8, /* ACPI EC Non-standard regs TMP 8..11 */ 6010 TP_EC_FUNCREV = 0xEF, /* ACPI EC Functional revision */ 6011 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */ 6012 6013 TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */ 6014}; 6015 6016 6017#define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */ 6018struct ibm_thermal_sensors_struct { 6019 s32 temp[TPACPI_MAX_THERMAL_SENSORS]; 6020}; 6021 6022static const struct tpacpi_quirk thermal_quirk_table[] __initconst = { 6023 /* Non-standard address for thermal registers on some ThinkPads */ 6024 TPACPI_Q_LNV3('R', '1', 'F', true), /* L13 Yoga Gen 2 */ 6025 TPACPI_Q_LNV3('N', '2', 'U', true), /* X13 Yoga Gen 2*/ 6026 TPACPI_Q_LNV3('R', '0', 'R', true), /* L380 */ 6027 TPACPI_Q_LNV3('R', '1', '5', true), /* L13 Yoga Gen 1*/ 6028 TPACPI_Q_LNV3('R', '1', '0', true), /* L390 */ 6029 TPACPI_Q_LNV3('N', '2', 'L', true), /* X13 Yoga Gen 1*/ 6030 TPACPI_Q_LNV3('R', '0', 'T', true), /* 11e Gen5 GL*/ 6031 TPACPI_Q_LNV3('R', '1', 'D', true), /* 11e Gen5 GL-R*/ 6032 TPACPI_Q_LNV3('R', '0', 'V', true), /* 11e Gen5 KL-Y*/ 6033}; 6034 6035static enum thermal_access_mode thermal_read_mode; 6036static bool thermal_use_labels; 6037static bool thermal_with_ns_address; /* Non-standard thermal reg address */ 6038 6039/* Function to check thermal read mode */ 6040static enum thermal_access_mode __init thermal_read_mode_check(void) 6041{ 6042 u8 t, ta1, ta2, ver = 0; 6043 int i; 6044 int acpi_tmp7; 6045 6046 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv"); 6047 6048 if (thinkpad_id.ec_model) { 6049 /* 6050 * Direct EC access mode: sensors at registers 0x78-0x7F, 6051 * 0xC0-0xC7. Registers return 0x00 for non-implemented, 6052 * thermal sensors return 0x80 when not available. 6053 * 6054 * In some special cases (when Power Supply ID is 0xC2) 6055 * above rule causes thermal control issues. Offset 0xEF 6056 * determines EC version. 0xC0-0xC7 are not thermal registers 6057 * in Ver 3. 6058 */ 6059 if (!acpi_ec_read(TP_EC_FUNCREV, &ver)) 6060 pr_warn("Thinkpad ACPI EC unable to access EC version\n"); 6061 6062 /* Quirks to check non-standard EC */ 6063 thermal_with_ns_address = tpacpi_check_quirks(thermal_quirk_table, 6064 ARRAY_SIZE(thermal_quirk_table)); 6065 6066 /* Support for Thinkpads with non-standard address */ 6067 if (thermal_with_ns_address) { 6068 pr_info("ECFW with non-standard thermal registers found\n"); 6069 return TPACPI_THERMAL_TPEC_12; 6070 } 6071 6072 ta1 = ta2 = 0; 6073 for (i = 0; i < 8; i++) { 6074 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) { 6075 ta1 |= t; 6076 } else { 6077 ta1 = 0; 6078 break; 6079 } 6080 if (ver < 3) { 6081 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) { 6082 ta2 |= t; 6083 } else { 6084 ta1 = 0; 6085 break; 6086 } 6087 } 6088 } 6089 6090 if (ta1 == 0) { 6091 /* This is sheer paranoia, but we handle it anyway */ 6092 if (acpi_tmp7) { 6093 pr_err("ThinkPad ACPI EC access misbehaving, falling back to ACPI TMPx access mode\n"); 6094 return TPACPI_THERMAL_ACPI_TMP07; 6095 } 6096 pr_err("ThinkPad ACPI EC access misbehaving, disabling thermal sensors access\n"); 6097 return TPACPI_THERMAL_NONE; 6098 } 6099 6100 if (ver >= 3) { 6101 thermal_use_labels = true; 6102 return TPACPI_THERMAL_TPEC_8; 6103 } 6104 6105 return (ta2 != 0) ? TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8; 6106 } 6107 6108 if (acpi_tmp7) { 6109 if (tpacpi_is_ibm() && acpi_evalf(ec_handle, NULL, "UPDT", "qv")) { 6110 /* 600e/x, 770e, 770x */ 6111 return TPACPI_THERMAL_ACPI_UPDT; 6112 } 6113 /* IBM/LENOVO DSDT EC.TMPx access, max 8 sensors */ 6114 return TPACPI_THERMAL_ACPI_TMP07; 6115 } 6116 6117 /* temperatures not supported on 570, G4x, R30, R31, R32 */ 6118 return TPACPI_THERMAL_NONE; 6119} 6120 6121/* idx is zero-based */ 6122static int thermal_get_sensor(int idx, s32 *value) 6123{ 6124 int t; 6125 s8 tmp; 6126 char tmpi[5]; 6127 6128 t = TP_EC_THERMAL_TMP0; 6129 6130 switch (thermal_read_mode) { 6131#if TPACPI_MAX_THERMAL_SENSORS >= 16 6132 case TPACPI_THERMAL_TPEC_16: 6133 if (idx >= 8 && idx <= 15) { 6134 t = TP_EC_THERMAL_TMP8; 6135 idx -= 8; 6136 } 6137#endif 6138 fallthrough; 6139 case TPACPI_THERMAL_TPEC_8: 6140 if (idx <= 7) { 6141 if (!acpi_ec_read(t + idx, &tmp)) 6142 return -EIO; 6143 *value = tmp * 1000; 6144 return 0; 6145 } 6146 break; 6147 6148 /* The Non-standard EC uses 12 Thermal areas */ 6149 case TPACPI_THERMAL_TPEC_12: 6150 if (idx >= 12) 6151 return -EINVAL; 6152 6153 t = idx < 8 ? TP_EC_THERMAL_TMP0_NS + idx : 6154 TP_EC_THERMAL_TMP8_NS + (idx - 8); 6155 6156 if (!acpi_ec_read(t, &tmp)) 6157 return -EIO; 6158 6159 *value = tmp * MILLIDEGREE_PER_DEGREE; 6160 return 0; 6161 6162 case TPACPI_THERMAL_ACPI_UPDT: 6163 if (idx <= 7) { 6164 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); 6165 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v")) 6166 return -EIO; 6167 if (!acpi_evalf(ec_handle, &t, tmpi, "d")) 6168 return -EIO; 6169 *value = (t - 2732) * 100; 6170 return 0; 6171 } 6172 break; 6173 6174 case TPACPI_THERMAL_ACPI_TMP07: 6175 if (idx <= 7) { 6176 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); 6177 if (!acpi_evalf(ec_handle, &t, tmpi, "d")) 6178 return -EIO; 6179 if (t > 127 || t < -127) 6180 t = TP_EC_THERMAL_TMP_NA; 6181 *value = t * 1000; 6182 return 0; 6183 } 6184 break; 6185 6186 case TPACPI_THERMAL_NONE: 6187 default: 6188 return -ENOSYS; 6189 } 6190 6191 return -EINVAL; 6192} 6193 6194static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s) 6195{ 6196 int res, i, n; 6197 6198 if (!s) 6199 return -EINVAL; 6200 6201 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16) 6202 n = 16; 6203 else if (thermal_read_mode == TPACPI_THERMAL_TPEC_12) 6204 n = 12; 6205 else 6206 n = 8; 6207 6208 for (i = 0 ; i < n; i++) { 6209 res = thermal_get_sensor(i, &s->temp[i]); 6210 if (res) 6211 return res; 6212 } 6213 6214 return n; 6215} 6216 6217static void thermal_dump_all_sensors(void) 6218{ 6219 int n, i; 6220 struct ibm_thermal_sensors_struct t; 6221 6222 n = thermal_get_sensors(&t); 6223 if (n <= 0) 6224 return; 6225 6226 pr_notice("temperatures (Celsius):"); 6227 6228 for (i = 0; i < n; i++) { 6229 if (t.temp[i] != TPACPI_THERMAL_SENSOR_NA) 6230 pr_cont(" %d", (int)(t.temp[i] / 1000)); 6231 else 6232 pr_cont(" N/A"); 6233 } 6234 6235 pr_cont("\n"); 6236} 6237 6238/* sysfs temp##_input -------------------------------------------------- */ 6239 6240static ssize_t thermal_temp_input_show(struct device *dev, 6241 struct device_attribute *attr, 6242 char *buf) 6243{ 6244 struct sensor_device_attribute *sensor_attr = 6245 to_sensor_dev_attr(attr); 6246 int idx = sensor_attr->index; 6247 s32 value; 6248 int res; 6249 6250 res = thermal_get_sensor(idx, &value); 6251 if (res) 6252 return res; 6253 if (value == TPACPI_THERMAL_SENSOR_NA) 6254 return -ENXIO; 6255 6256 return sysfs_emit(buf, "%d\n", value); 6257} 6258 6259#define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \ 6260 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \ 6261 thermal_temp_input_show, NULL, _idxB) 6262 6263static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = { 6264 THERMAL_SENSOR_ATTR_TEMP(1, 0), 6265 THERMAL_SENSOR_ATTR_TEMP(2, 1), 6266 THERMAL_SENSOR_ATTR_TEMP(3, 2), 6267 THERMAL_SENSOR_ATTR_TEMP(4, 3), 6268 THERMAL_SENSOR_ATTR_TEMP(5, 4), 6269 THERMAL_SENSOR_ATTR_TEMP(6, 5), 6270 THERMAL_SENSOR_ATTR_TEMP(7, 6), 6271 THERMAL_SENSOR_ATTR_TEMP(8, 7), 6272 THERMAL_SENSOR_ATTR_TEMP(9, 8), 6273 THERMAL_SENSOR_ATTR_TEMP(10, 9), 6274 THERMAL_SENSOR_ATTR_TEMP(11, 10), 6275 THERMAL_SENSOR_ATTR_TEMP(12, 11), 6276 THERMAL_SENSOR_ATTR_TEMP(13, 12), 6277 THERMAL_SENSOR_ATTR_TEMP(14, 13), 6278 THERMAL_SENSOR_ATTR_TEMP(15, 14), 6279 THERMAL_SENSOR_ATTR_TEMP(16, 15), 6280}; 6281 6282#define THERMAL_ATTRS(X) \ 6283 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr 6284 6285static struct attribute *thermal_temp_input_attr[] = { 6286 THERMAL_ATTRS(0), 6287 THERMAL_ATTRS(1), 6288 THERMAL_ATTRS(2), 6289 THERMAL_ATTRS(3), 6290 THERMAL_ATTRS(4), 6291 THERMAL_ATTRS(5), 6292 THERMAL_ATTRS(6), 6293 THERMAL_ATTRS(7), 6294 THERMAL_ATTRS(8), 6295 THERMAL_ATTRS(9), 6296 THERMAL_ATTRS(10), 6297 THERMAL_ATTRS(11), 6298 THERMAL_ATTRS(12), 6299 THERMAL_ATTRS(13), 6300 THERMAL_ATTRS(14), 6301 THERMAL_ATTRS(15), 6302 NULL 6303}; 6304 6305#define to_dev_attr(_attr) container_of(_attr, struct device_attribute, attr) 6306 6307static umode_t thermal_attr_is_visible(struct kobject *kobj, 6308 struct attribute *attr, int n) 6309{ 6310 struct device_attribute *dev_attr = to_dev_attr(attr); 6311 struct sensor_device_attribute *sensor_attr = 6312 to_sensor_dev_attr(dev_attr); 6313 6314 int idx = sensor_attr->index; 6315 6316 switch (thermal_read_mode) { 6317 case TPACPI_THERMAL_NONE: 6318 return 0; 6319 6320 case TPACPI_THERMAL_ACPI_TMP07: 6321 case TPACPI_THERMAL_ACPI_UPDT: 6322 case TPACPI_THERMAL_TPEC_8: 6323 if (idx >= 8) 6324 return 0; 6325 break; 6326 6327 case TPACPI_THERMAL_TPEC_12: 6328 if (idx >= 12) 6329 return 0; 6330 break; 6331 6332 default: 6333 break; 6334 6335 } 6336 6337 return attr->mode; 6338} 6339 6340static const struct attribute_group thermal_attr_group = { 6341 .is_visible = thermal_attr_is_visible, 6342 .attrs = thermal_temp_input_attr, 6343}; 6344 6345#undef THERMAL_SENSOR_ATTR_TEMP 6346#undef THERMAL_ATTRS 6347 6348static ssize_t temp1_label_show(struct device *dev, struct device_attribute *attr, char *buf) 6349{ 6350 return sysfs_emit(buf, "CPU\n"); 6351} 6352static DEVICE_ATTR_RO(temp1_label); 6353 6354static ssize_t temp2_label_show(struct device *dev, struct device_attribute *attr, char *buf) 6355{ 6356 return sysfs_emit(buf, "GPU\n"); 6357} 6358static DEVICE_ATTR_RO(temp2_label); 6359 6360static struct attribute *temp_label_attributes[] = { 6361 &dev_attr_temp1_label.attr, 6362 &dev_attr_temp2_label.attr, 6363 NULL 6364}; 6365 6366static umode_t temp_label_attr_is_visible(struct kobject *kobj, 6367 struct attribute *attr, int n) 6368{ 6369 return thermal_use_labels ? attr->mode : 0; 6370} 6371 6372static const struct attribute_group temp_label_attr_group = { 6373 .is_visible = temp_label_attr_is_visible, 6374 .attrs = temp_label_attributes, 6375}; 6376 6377/* --------------------------------------------------------------------- */ 6378 6379static int __init thermal_init(struct ibm_init_struct *iibm) 6380{ 6381 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n"); 6382 6383 thermal_read_mode = thermal_read_mode_check(); 6384 6385 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n", 6386 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE), 6387 thermal_read_mode); 6388 6389 return thermal_read_mode != TPACPI_THERMAL_NONE ? 0 : -ENODEV; 6390} 6391 6392static int thermal_read(struct seq_file *m) 6393{ 6394 int n, i; 6395 struct ibm_thermal_sensors_struct t; 6396 6397 n = thermal_get_sensors(&t); 6398 if (unlikely(n < 0)) 6399 return n; 6400 6401 seq_printf(m, "temperatures:\t"); 6402 6403 if (n > 0) { 6404 for (i = 0; i < (n - 1); i++) 6405 seq_printf(m, "%d ", t.temp[i] / 1000); 6406 seq_printf(m, "%d\n", t.temp[i] / 1000); 6407 } else 6408 seq_printf(m, "not supported\n"); 6409 6410 return 0; 6411} 6412 6413static struct ibm_struct thermal_driver_data = { 6414 .name = "thermal", 6415 .read = thermal_read, 6416}; 6417 6418/************************************************************************* 6419 * Backlight/brightness subdriver 6420 */ 6421 6422#define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen" 6423 6424/* 6425 * ThinkPads can read brightness from two places: EC HBRV (0x31), or 6426 * CMOS NVRAM byte 0x5E, bits 0-3. 6427 * 6428 * EC HBRV (0x31) has the following layout 6429 * Bit 7: unknown function 6430 * Bit 6: unknown function 6431 * Bit 5: Z: honour scale changes, NZ: ignore scale changes 6432 * Bit 4: must be set to zero to avoid problems 6433 * Bit 3-0: backlight brightness level 6434 * 6435 * brightness_get_raw returns status data in the HBRV layout 6436 * 6437 * WARNING: The X61 has been verified to use HBRV for something else, so 6438 * this should be used _only_ on IBM ThinkPads, and maybe with some careful 6439 * testing on the very early *60 Lenovo models... 6440 */ 6441 6442enum { 6443 TP_EC_BACKLIGHT = 0x31, 6444 6445 /* TP_EC_BACKLIGHT bitmasks */ 6446 TP_EC_BACKLIGHT_LVLMSK = 0x1F, 6447 TP_EC_BACKLIGHT_CMDMSK = 0xE0, 6448 TP_EC_BACKLIGHT_MAPSW = 0x20, 6449}; 6450 6451enum tpacpi_brightness_access_mode { 6452 TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */ 6453 TPACPI_BRGHT_MODE_EC, /* EC control */ 6454 TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */ 6455 TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */ 6456 TPACPI_BRGHT_MODE_MAX 6457}; 6458 6459static struct backlight_device *ibm_backlight_device; 6460 6461static enum tpacpi_brightness_access_mode brightness_mode = 6462 TPACPI_BRGHT_MODE_MAX; 6463 6464static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */ 6465 6466static struct mutex brightness_mutex; 6467 6468/* NVRAM brightness access */ 6469static unsigned int tpacpi_brightness_nvram_get(void) 6470{ 6471 u8 lnvram; 6472 6473 lockdep_assert_held(&brightness_mutex); 6474 6475 lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS) 6476 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 6477 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; 6478 lnvram &= bright_maxlvl; 6479 6480 return lnvram; 6481} 6482 6483static void tpacpi_brightness_checkpoint_nvram(void) 6484{ 6485 u8 lec = 0; 6486 u8 b_nvram; 6487 6488 if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM) 6489 return; 6490 6491 vdbg_printk(TPACPI_DBG_BRGHT, 6492 "trying to checkpoint backlight level to NVRAM...\n"); 6493 6494 if (mutex_lock_killable(&brightness_mutex) < 0) 6495 return; 6496 6497 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6498 goto unlock; 6499 lec &= TP_EC_BACKLIGHT_LVLMSK; 6500 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); 6501 6502 if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 6503 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) { 6504 /* NVRAM needs update */ 6505 b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS << 6506 TP_NVRAM_POS_LEVEL_BRIGHTNESS); 6507 b_nvram |= lec; 6508 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS); 6509 dbg_printk(TPACPI_DBG_BRGHT, 6510 "updated NVRAM backlight level to %u (0x%02x)\n", 6511 (unsigned int) lec, (unsigned int) b_nvram); 6512 } else 6513 vdbg_printk(TPACPI_DBG_BRGHT, 6514 "NVRAM backlight level already is %u (0x%02x)\n", 6515 (unsigned int) lec, (unsigned int) b_nvram); 6516 6517unlock: 6518 mutex_unlock(&brightness_mutex); 6519} 6520 6521 6522static int tpacpi_brightness_get_raw(int *status) 6523{ 6524 u8 lec = 0; 6525 6526 lockdep_assert_held(&brightness_mutex); 6527 6528 switch (brightness_mode) { 6529 case TPACPI_BRGHT_MODE_UCMS_STEP: 6530 *status = tpacpi_brightness_nvram_get(); 6531 return 0; 6532 case TPACPI_BRGHT_MODE_EC: 6533 case TPACPI_BRGHT_MODE_ECNVRAM: 6534 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6535 return -EIO; 6536 *status = lec; 6537 return 0; 6538 default: 6539 return -ENXIO; 6540 } 6541} 6542 6543/* do NOT call with illegal backlight level value */ 6544static int tpacpi_brightness_set_ec(unsigned int value) 6545{ 6546 u8 lec = 0; 6547 6548 lockdep_assert_held(&brightness_mutex); 6549 6550 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6551 return -EIO; 6552 6553 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT, 6554 (lec & TP_EC_BACKLIGHT_CMDMSK) | 6555 (value & TP_EC_BACKLIGHT_LVLMSK)))) 6556 return -EIO; 6557 6558 return 0; 6559} 6560 6561static int tpacpi_brightness_set_ucmsstep(unsigned int value) 6562{ 6563 int cmos_cmd, inc; 6564 unsigned int current_value, i; 6565 6566 lockdep_assert_held(&brightness_mutex); 6567 6568 current_value = tpacpi_brightness_nvram_get(); 6569 6570 if (value == current_value) 6571 return 0; 6572 6573 cmos_cmd = (value > current_value) ? 6574 TP_CMOS_BRIGHTNESS_UP : 6575 TP_CMOS_BRIGHTNESS_DOWN; 6576 inc = (value > current_value) ? 1 : -1; 6577 6578 for (i = current_value; i != value; i += inc) 6579 if (issue_thinkpad_cmos_command(cmos_cmd)) 6580 return -EIO; 6581 6582 return 0; 6583} 6584 6585/* May return EINTR which can always be mapped to ERESTARTSYS */ 6586static int brightness_set(unsigned int value) 6587{ 6588 int res; 6589 6590 if (value > bright_maxlvl) 6591 return -EINVAL; 6592 6593 vdbg_printk(TPACPI_DBG_BRGHT, 6594 "set backlight level to %d\n", value); 6595 6596 res = mutex_lock_killable(&brightness_mutex); 6597 if (res < 0) 6598 return res; 6599 6600 switch (brightness_mode) { 6601 case TPACPI_BRGHT_MODE_EC: 6602 case TPACPI_BRGHT_MODE_ECNVRAM: 6603 res = tpacpi_brightness_set_ec(value); 6604 break; 6605 case TPACPI_BRGHT_MODE_UCMS_STEP: 6606 res = tpacpi_brightness_set_ucmsstep(value); 6607 break; 6608 default: 6609 res = -ENXIO; 6610 } 6611 6612 mutex_unlock(&brightness_mutex); 6613 return res; 6614} 6615 6616/* sysfs backlight class ----------------------------------------------- */ 6617 6618static int brightness_update_status(struct backlight_device *bd) 6619{ 6620 int level = backlight_get_brightness(bd); 6621 6622 dbg_printk(TPACPI_DBG_BRGHT, 6623 "backlight: attempt to set level to %d\n", 6624 level); 6625 6626 /* it is the backlight class's job (caller) to handle 6627 * EINTR and other errors properly */ 6628 return brightness_set(level); 6629} 6630 6631static int brightness_get(struct backlight_device *bd) 6632{ 6633 int status, res; 6634 6635 res = mutex_lock_killable(&brightness_mutex); 6636 if (res < 0) 6637 return 0; 6638 6639 res = tpacpi_brightness_get_raw(&status); 6640 6641 mutex_unlock(&brightness_mutex); 6642 6643 if (res < 0) 6644 return 0; 6645 6646 return status & TP_EC_BACKLIGHT_LVLMSK; 6647} 6648 6649static void tpacpi_brightness_notify_change(void) 6650{ 6651 backlight_force_update(ibm_backlight_device, 6652 BACKLIGHT_UPDATE_HOTKEY); 6653} 6654 6655static const struct backlight_ops ibm_backlight_data = { 6656 .get_brightness = brightness_get, 6657 .update_status = brightness_update_status, 6658}; 6659 6660/* --------------------------------------------------------------------- */ 6661 6662static int __init tpacpi_evaluate_bcl(struct acpi_device *adev, void *not_used) 6663{ 6664 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 6665 union acpi_object *obj; 6666 acpi_status status; 6667 int rc; 6668 6669 status = acpi_evaluate_object(adev->handle, "_BCL", NULL, &buffer); 6670 if (ACPI_FAILURE(status)) 6671 return 0; 6672 6673 obj = buffer.pointer; 6674 if (!obj || obj->type != ACPI_TYPE_PACKAGE) { 6675 acpi_handle_info(adev->handle, 6676 "Unknown _BCL data, please report this to %s\n", 6677 TPACPI_MAIL); 6678 rc = 0; 6679 } else { 6680 rc = obj->package.count; 6681 } 6682 kfree(obj); 6683 6684 return rc; 6685} 6686 6687/* 6688 * Call _BCL method of video device. On some ThinkPads this will 6689 * switch the firmware to the ACPI brightness control mode. 6690 */ 6691 6692static int __init tpacpi_query_bcl_levels(acpi_handle handle) 6693{ 6694 struct acpi_device *device; 6695 6696 device = acpi_fetch_acpi_dev(handle); 6697 if (!device) 6698 return 0; 6699 6700 return acpi_dev_for_each_child(device, tpacpi_evaluate_bcl, NULL); 6701} 6702 6703 6704/* 6705 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map 6706 */ 6707static unsigned int __init tpacpi_check_std_acpi_brightness_support(void) 6708{ 6709 acpi_handle video_device; 6710 int bcl_levels = 0; 6711 6712 tpacpi_acpi_handle_locate("video", NULL, &video_device); 6713 if (video_device) 6714 bcl_levels = tpacpi_query_bcl_levels(video_device); 6715 6716 tp_features.bright_acpimode = (bcl_levels > 0); 6717 6718 return (bcl_levels > 2) ? (bcl_levels - 2) : 0; 6719} 6720 6721/* 6722 * These are only useful for models that have only one possibility 6723 * of GPU. If the BIOS model handles both ATI and Intel, don't use 6724 * these quirks. 6725 */ 6726#define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */ 6727#define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */ 6728#define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */ 6729 6730static const struct tpacpi_quirk brightness_quirk_table[] __initconst = { 6731 /* Models with ATI GPUs known to require ECNVRAM mode */ 6732 TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */ 6733 6734 /* Models with ATI GPUs that can use ECNVRAM */ 6735 TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC), /* R50,51 T40-42 */ 6736 TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6737 TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_EC), /* R52 */ 6738 TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6739 6740 /* Models with Intel Extreme Graphics 2 */ 6741 TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC), /* X40 */ 6742 TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6743 TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6744 6745 /* Models with Intel GMA900 */ 6746 TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */ 6747 TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */ 6748 TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */ 6749}; 6750 6751/* 6752 * Returns < 0 for error, otherwise sets tp_features.bright_* 6753 * and bright_maxlvl. 6754 */ 6755static void __init tpacpi_detect_brightness_capabilities(void) 6756{ 6757 unsigned int b; 6758 6759 vdbg_printk(TPACPI_DBG_INIT, 6760 "detecting firmware brightness interface capabilities\n"); 6761 6762 /* we could run a quirks check here (same table used by 6763 * brightness_init) if needed */ 6764 6765 /* 6766 * We always attempt to detect acpi support, so as to switch 6767 * Lenovo Vista BIOS to ACPI brightness mode even if we are not 6768 * going to publish a backlight interface 6769 */ 6770 b = tpacpi_check_std_acpi_brightness_support(); 6771 switch (b) { 6772 case 16: 6773 bright_maxlvl = 15; 6774 break; 6775 case 8: 6776 case 0: 6777 bright_maxlvl = 7; 6778 break; 6779 default: 6780 tp_features.bright_unkfw = 1; 6781 bright_maxlvl = b - 1; 6782 } 6783 pr_debug("detected %u brightness levels\n", bright_maxlvl + 1); 6784} 6785 6786static int __init brightness_init(struct ibm_init_struct *iibm) 6787{ 6788 struct backlight_properties props; 6789 int b; 6790 unsigned long quirks; 6791 6792 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n"); 6793 6794 mutex_init(&brightness_mutex); 6795 6796 quirks = tpacpi_check_quirks(brightness_quirk_table, 6797 ARRAY_SIZE(brightness_quirk_table)); 6798 6799 /* tpacpi_detect_brightness_capabilities() must have run already */ 6800 6801 /* if it is unknown, we don't handle it: it wouldn't be safe */ 6802 if (tp_features.bright_unkfw) 6803 return -ENODEV; 6804 6805 if (!brightness_enable) { 6806 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 6807 "brightness support disabled by module parameter\n"); 6808 return -ENODEV; 6809 } 6810 6811 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) { 6812 if (brightness_enable > 1) { 6813 pr_info("Standard ACPI backlight interface available, not loading native one\n"); 6814 return -ENODEV; 6815 } else if (brightness_enable == 1) { 6816 pr_warn("Cannot enable backlight brightness support, ACPI is already handling it. Refer to the acpi_backlight kernel parameter.\n"); 6817 return -ENODEV; 6818 } 6819 } else if (!tp_features.bright_acpimode) { 6820 pr_notice("ACPI backlight interface not available\n"); 6821 return -ENODEV; 6822 } 6823 6824 pr_notice("ACPI native brightness control enabled\n"); 6825 6826 /* 6827 * Check for module parameter bogosity, note that we 6828 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be 6829 * able to detect "unspecified" 6830 */ 6831 if (brightness_mode > TPACPI_BRGHT_MODE_MAX) 6832 return -EINVAL; 6833 6834 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */ 6835 if (brightness_mode == TPACPI_BRGHT_MODE_AUTO || 6836 brightness_mode == TPACPI_BRGHT_MODE_MAX) { 6837 if (quirks & TPACPI_BRGHT_Q_EC) 6838 brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM; 6839 else 6840 brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP; 6841 6842 dbg_printk(TPACPI_DBG_BRGHT, 6843 "driver auto-selected brightness_mode=%d\n", 6844 brightness_mode); 6845 } 6846 6847 /* Safety */ 6848 if (!tpacpi_is_ibm() && 6849 (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM || 6850 brightness_mode == TPACPI_BRGHT_MODE_EC)) 6851 return -EINVAL; 6852 6853 if (tpacpi_brightness_get_raw(&b) < 0) 6854 return -ENODEV; 6855 6856 memset(&props, 0, sizeof(struct backlight_properties)); 6857 props.type = BACKLIGHT_PLATFORM; 6858 props.max_brightness = bright_maxlvl; 6859 props.brightness = b & TP_EC_BACKLIGHT_LVLMSK; 6860 ibm_backlight_device = backlight_device_register(TPACPI_BACKLIGHT_DEV_NAME, 6861 NULL, NULL, 6862 &ibm_backlight_data, 6863 &props); 6864 if (IS_ERR(ibm_backlight_device)) { 6865 int rc = PTR_ERR(ibm_backlight_device); 6866 ibm_backlight_device = NULL; 6867 pr_err("Could not register backlight device\n"); 6868 return rc; 6869 } 6870 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 6871 "brightness is supported\n"); 6872 6873 if (quirks & TPACPI_BRGHT_Q_ASK) { 6874 pr_notice("brightness: will use unverified default: brightness_mode=%d\n", 6875 brightness_mode); 6876 pr_notice("brightness: please report to %s whether it works well or not on your ThinkPad\n", 6877 TPACPI_MAIL); 6878 } 6879 6880 /* Added by mistake in early 2007. Probably useless, but it could 6881 * be working around some unknown firmware problem where the value 6882 * read at startup doesn't match the real hardware state... so leave 6883 * it in place just in case */ 6884 backlight_update_status(ibm_backlight_device); 6885 6886 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 6887 "brightness: registering brightness hotkeys as change notification\n"); 6888 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask 6889 | TP_ACPI_HKEY_BRGHTUP_MASK 6890 | TP_ACPI_HKEY_BRGHTDWN_MASK); 6891 return 0; 6892} 6893 6894static void brightness_suspend(void) 6895{ 6896 tpacpi_brightness_checkpoint_nvram(); 6897} 6898 6899static void brightness_shutdown(void) 6900{ 6901 tpacpi_brightness_checkpoint_nvram(); 6902} 6903 6904static void brightness_exit(void) 6905{ 6906 if (ibm_backlight_device) { 6907 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT, 6908 "calling backlight_device_unregister()\n"); 6909 backlight_device_unregister(ibm_backlight_device); 6910 } 6911 6912 tpacpi_brightness_checkpoint_nvram(); 6913} 6914 6915static int brightness_read(struct seq_file *m) 6916{ 6917 int level; 6918 6919 level = brightness_get(NULL); 6920 if (level < 0) { 6921 seq_printf(m, "level:\t\tunreadable\n"); 6922 } else { 6923 seq_printf(m, "level:\t\t%d\n", level); 6924 seq_printf(m, "commands:\tup, down\n"); 6925 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n", 6926 bright_maxlvl); 6927 } 6928 6929 return 0; 6930} 6931 6932static int brightness_write(char *buf) 6933{ 6934 int level; 6935 int rc; 6936 char *cmd; 6937 6938 level = brightness_get(NULL); 6939 if (level < 0) 6940 return level; 6941 6942 while ((cmd = strsep(&buf, ","))) { 6943 if (strstarts(cmd, "up")) { 6944 if (level < bright_maxlvl) 6945 level++; 6946 } else if (strstarts(cmd, "down")) { 6947 if (level > 0) 6948 level--; 6949 } else if (sscanf(cmd, "level %d", &level) == 1 && 6950 level >= 0 && level <= bright_maxlvl) { 6951 /* new level set */ 6952 } else 6953 return -EINVAL; 6954 } 6955 6956 tpacpi_disclose_usertask("procfs brightness", 6957 "set level to %d\n", level); 6958 6959 /* 6960 * Now we know what the final level should be, so we try to set it. 6961 * Doing it this way makes the syscall restartable in case of EINTR 6962 */ 6963 rc = brightness_set(level); 6964 if (!rc && ibm_backlight_device) 6965 backlight_force_update(ibm_backlight_device, 6966 BACKLIGHT_UPDATE_SYSFS); 6967 return (rc == -EINTR) ? -ERESTARTSYS : rc; 6968} 6969 6970static struct ibm_struct brightness_driver_data = { 6971 .name = "brightness", 6972 .read = brightness_read, 6973 .write = brightness_write, 6974 .exit = brightness_exit, 6975 .suspend = brightness_suspend, 6976 .shutdown = brightness_shutdown, 6977}; 6978 6979/************************************************************************* 6980 * Volume subdriver 6981 */ 6982 6983/* 6984 * IBM ThinkPads have a simple volume controller with MUTE gating. 6985 * Very early Lenovo ThinkPads follow the IBM ThinkPad spec. 6986 * 6987 * Since the *61 series (and probably also the later *60 series), Lenovo 6988 * ThinkPads only implement the MUTE gate. 6989 * 6990 * EC register 0x30 6991 * Bit 6: MUTE (1 mutes sound) 6992 * Bit 3-0: Volume 6993 * Other bits should be zero as far as we know. 6994 * 6995 * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and 6996 * bits 3-0 (volume). Other bits in NVRAM may have other functions, 6997 * such as bit 7 which is used to detect repeated presses of MUTE, 6998 * and we leave them unchanged. 6999 * 7000 * On newer Lenovo ThinkPads, the EC can automatically change the volume 7001 * in response to user input. Unfortunately, this rarely works well. 7002 * The laptop changes the state of its internal MUTE gate and, on some 7003 * models, sends KEY_MUTE, causing any user code that responds to the 7004 * mute button to get confused. The hardware MUTE gate is also 7005 * unnecessary, since user code can handle the mute button without 7006 * kernel or EC help. 7007 * 7008 * To avoid confusing userspace, we simply disable all EC-based mute 7009 * and volume controls when possible. 7010 */ 7011 7012#ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT 7013 7014#define TPACPI_ALSA_DRVNAME "ThinkPad EC" 7015#define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control" 7016#define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME 7017 7018#if SNDRV_CARDS <= 32 7019#define DEFAULT_ALSA_IDX ~((1 << (SNDRV_CARDS - 3)) - 1) 7020#else 7021#define DEFAULT_ALSA_IDX ~((1 << (32 - 3)) - 1) 7022#endif 7023static int alsa_index = DEFAULT_ALSA_IDX; /* last three slots */ 7024static char *alsa_id = "ThinkPadEC"; 7025static bool alsa_enable = SNDRV_DEFAULT_ENABLE1; 7026 7027struct tpacpi_alsa_data { 7028 struct snd_card *card; 7029 struct snd_ctl_elem_id *ctl_mute_id; 7030 struct snd_ctl_elem_id *ctl_vol_id; 7031}; 7032 7033static struct snd_card *alsa_card; 7034 7035enum { 7036 TP_EC_AUDIO = 0x30, 7037 7038 /* TP_EC_AUDIO bits */ 7039 TP_EC_AUDIO_MUTESW = 6, 7040 7041 /* TP_EC_AUDIO bitmasks */ 7042 TP_EC_AUDIO_LVL_MSK = 0x0F, 7043 TP_EC_AUDIO_MUTESW_MSK = (1 << TP_EC_AUDIO_MUTESW), 7044 7045 /* Maximum volume */ 7046 TP_EC_VOLUME_MAX = 14, 7047}; 7048 7049enum tpacpi_volume_access_mode { 7050 TPACPI_VOL_MODE_AUTO = 0, /* Not implemented yet */ 7051 TPACPI_VOL_MODE_EC, /* Pure EC control */ 7052 TPACPI_VOL_MODE_UCMS_STEP, /* UCMS step-based control: N/A */ 7053 TPACPI_VOL_MODE_ECNVRAM, /* EC control w/ NVRAM store */ 7054 TPACPI_VOL_MODE_MAX 7055}; 7056 7057enum tpacpi_volume_capabilities { 7058 TPACPI_VOL_CAP_AUTO = 0, /* Use white/blacklist */ 7059 TPACPI_VOL_CAP_VOLMUTE, /* Output vol and mute */ 7060 TPACPI_VOL_CAP_MUTEONLY, /* Output mute only */ 7061 TPACPI_VOL_CAP_MAX 7062}; 7063 7064enum tpacpi_mute_btn_mode { 7065 TP_EC_MUTE_BTN_LATCH = 0, /* Mute mutes; up/down unmutes */ 7066 /* We don't know what mode 1 is. */ 7067 TP_EC_MUTE_BTN_NONE = 2, /* Mute and up/down are just keys */ 7068 TP_EC_MUTE_BTN_TOGGLE = 3, /* Mute toggles; up/down unmutes */ 7069}; 7070 7071static enum tpacpi_volume_access_mode volume_mode = 7072 TPACPI_VOL_MODE_MAX; 7073 7074static enum tpacpi_volume_capabilities volume_capabilities; 7075static bool volume_control_allowed; 7076static bool software_mute_requested = true; 7077static bool software_mute_active; 7078static int software_mute_orig_mode; 7079 7080/* 7081 * Used to syncronize writers to TP_EC_AUDIO and 7082 * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write 7083 */ 7084static struct mutex volume_mutex; 7085 7086static void tpacpi_volume_checkpoint_nvram(void) 7087{ 7088 u8 lec = 0; 7089 u8 b_nvram; 7090 u8 ec_mask; 7091 7092 if (volume_mode != TPACPI_VOL_MODE_ECNVRAM) 7093 return; 7094 if (!volume_control_allowed) 7095 return; 7096 if (software_mute_active) 7097 return; 7098 7099 vdbg_printk(TPACPI_DBG_MIXER, 7100 "trying to checkpoint mixer state to NVRAM...\n"); 7101 7102 if (tp_features.mixer_no_level_control) 7103 ec_mask = TP_EC_AUDIO_MUTESW_MSK; 7104 else 7105 ec_mask = TP_EC_AUDIO_MUTESW_MSK | TP_EC_AUDIO_LVL_MSK; 7106 7107 if (mutex_lock_killable(&volume_mutex) < 0) 7108 return; 7109 7110 if (unlikely(!acpi_ec_read(TP_EC_AUDIO, &lec))) 7111 goto unlock; 7112 lec &= ec_mask; 7113 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_MIXER); 7114 7115 if (lec != (b_nvram & ec_mask)) { 7116 /* NVRAM needs update */ 7117 b_nvram &= ~ec_mask; 7118 b_nvram |= lec; 7119 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_MIXER); 7120 dbg_printk(TPACPI_DBG_MIXER, 7121 "updated NVRAM mixer status to 0x%02x (0x%02x)\n", 7122 (unsigned int) lec, (unsigned int) b_nvram); 7123 } else { 7124 vdbg_printk(TPACPI_DBG_MIXER, 7125 "NVRAM mixer status already is 0x%02x (0x%02x)\n", 7126 (unsigned int) lec, (unsigned int) b_nvram); 7127 } 7128 7129unlock: 7130 mutex_unlock(&volume_mutex); 7131} 7132 7133static int volume_get_status_ec(u8 *status) 7134{ 7135 u8 s; 7136 7137 if (!acpi_ec_read(TP_EC_AUDIO, &s)) 7138 return -EIO; 7139 7140 *status = s; 7141 7142 dbg_printk(TPACPI_DBG_MIXER, "status 0x%02x\n", s); 7143 7144 return 0; 7145} 7146 7147static int volume_get_status(u8 *status) 7148{ 7149 return volume_get_status_ec(status); 7150} 7151 7152static int volume_set_status_ec(const u8 status) 7153{ 7154 if (!acpi_ec_write(TP_EC_AUDIO, status)) 7155 return -EIO; 7156 7157 dbg_printk(TPACPI_DBG_MIXER, "set EC mixer to 0x%02x\n", status); 7158 7159 /* 7160 * On X200s, and possibly on others, it can take a while for 7161 * reads to become correct. 7162 */ 7163 msleep(1); 7164 7165 return 0; 7166} 7167 7168static int volume_set_status(const u8 status) 7169{ 7170 return volume_set_status_ec(status); 7171} 7172 7173/* returns < 0 on error, 0 on no change, 1 on change */ 7174static int __volume_set_mute_ec(const bool mute) 7175{ 7176 int rc; 7177 u8 s, n; 7178 7179 if (mutex_lock_killable(&volume_mutex) < 0) 7180 return -EINTR; 7181 7182 rc = volume_get_status_ec(&s); 7183 if (rc) 7184 goto unlock; 7185 7186 n = (mute) ? s | TP_EC_AUDIO_MUTESW_MSK : 7187 s & ~TP_EC_AUDIO_MUTESW_MSK; 7188 7189 if (n != s) { 7190 rc = volume_set_status_ec(n); 7191 if (!rc) 7192 rc = 1; 7193 } 7194 7195unlock: 7196 mutex_unlock(&volume_mutex); 7197 return rc; 7198} 7199 7200static int volume_alsa_set_mute(const bool mute) 7201{ 7202 dbg_printk(TPACPI_DBG_MIXER, "ALSA: trying to %smute\n", 7203 (mute) ? "" : "un"); 7204 return __volume_set_mute_ec(mute); 7205} 7206 7207static int volume_set_mute(const bool mute) 7208{ 7209 int rc; 7210 7211 dbg_printk(TPACPI_DBG_MIXER, "trying to %smute\n", 7212 (mute) ? "" : "un"); 7213 7214 rc = __volume_set_mute_ec(mute); 7215 return (rc < 0) ? rc : 0; 7216} 7217 7218/* returns < 0 on error, 0 on no change, 1 on change */ 7219static int __volume_set_volume_ec(const u8 vol) 7220{ 7221 int rc; 7222 u8 s, n; 7223 7224 if (vol > TP_EC_VOLUME_MAX) 7225 return -EINVAL; 7226 7227 if (mutex_lock_killable(&volume_mutex) < 0) 7228 return -EINTR; 7229 7230 rc = volume_get_status_ec(&s); 7231 if (rc) 7232 goto unlock; 7233 7234 n = (s & ~TP_EC_AUDIO_LVL_MSK) | vol; 7235 7236 if (n != s) { 7237 rc = volume_set_status_ec(n); 7238 if (!rc) 7239 rc = 1; 7240 } 7241 7242unlock: 7243 mutex_unlock(&volume_mutex); 7244 return rc; 7245} 7246 7247static int volume_set_software_mute(bool startup) 7248{ 7249 int result; 7250 7251 if (!tpacpi_is_lenovo()) 7252 return -ENODEV; 7253 7254 if (startup) { 7255 if (!acpi_evalf(ec_handle, &software_mute_orig_mode, 7256 "HAUM", "qd")) 7257 return -EIO; 7258 7259 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7260 "Initial HAUM setting was %d\n", 7261 software_mute_orig_mode); 7262 } 7263 7264 if (!acpi_evalf(ec_handle, &result, "SAUM", "qdd", 7265 (int)TP_EC_MUTE_BTN_NONE)) 7266 return -EIO; 7267 7268 if (result != TP_EC_MUTE_BTN_NONE) 7269 pr_warn("Unexpected SAUM result %d\n", 7270 result); 7271 7272 /* 7273 * In software mute mode, the standard codec controls take 7274 * precendence, so we unmute the ThinkPad HW switch at 7275 * startup. Just on case there are SAUM-capable ThinkPads 7276 * with level controls, set max HW volume as well. 7277 */ 7278 if (tp_features.mixer_no_level_control) 7279 result = volume_set_mute(false); 7280 else 7281 result = volume_set_status(TP_EC_VOLUME_MAX); 7282 7283 if (result != 0) 7284 pr_warn("Failed to unmute the HW mute switch\n"); 7285 7286 return 0; 7287} 7288 7289static void volume_exit_software_mute(void) 7290{ 7291 int r; 7292 7293 if (!acpi_evalf(ec_handle, &r, "SAUM", "qdd", software_mute_orig_mode) 7294 || r != software_mute_orig_mode) 7295 pr_warn("Failed to restore mute mode\n"); 7296} 7297 7298static int volume_alsa_set_volume(const u8 vol) 7299{ 7300 dbg_printk(TPACPI_DBG_MIXER, 7301 "ALSA: trying to set volume level to %hu\n", vol); 7302 return __volume_set_volume_ec(vol); 7303} 7304 7305static void volume_alsa_notify_change(void) 7306{ 7307 struct tpacpi_alsa_data *d; 7308 7309 if (alsa_card && alsa_card->private_data) { 7310 d = alsa_card->private_data; 7311 if (d->ctl_mute_id) 7312 snd_ctl_notify(alsa_card, 7313 SNDRV_CTL_EVENT_MASK_VALUE, 7314 d->ctl_mute_id); 7315 if (d->ctl_vol_id) 7316 snd_ctl_notify(alsa_card, 7317 SNDRV_CTL_EVENT_MASK_VALUE, 7318 d->ctl_vol_id); 7319 } 7320} 7321 7322static int volume_alsa_vol_info(struct snd_kcontrol *kcontrol, 7323 struct snd_ctl_elem_info *uinfo) 7324{ 7325 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 7326 uinfo->count = 1; 7327 uinfo->value.integer.min = 0; 7328 uinfo->value.integer.max = TP_EC_VOLUME_MAX; 7329 return 0; 7330} 7331 7332static int volume_alsa_vol_get(struct snd_kcontrol *kcontrol, 7333 struct snd_ctl_elem_value *ucontrol) 7334{ 7335 u8 s; 7336 int rc; 7337 7338 rc = volume_get_status(&s); 7339 if (rc < 0) 7340 return rc; 7341 7342 ucontrol->value.integer.value[0] = s & TP_EC_AUDIO_LVL_MSK; 7343 return 0; 7344} 7345 7346static int volume_alsa_vol_put(struct snd_kcontrol *kcontrol, 7347 struct snd_ctl_elem_value *ucontrol) 7348{ 7349 tpacpi_disclose_usertask("ALSA", "set volume to %ld\n", 7350 ucontrol->value.integer.value[0]); 7351 return volume_alsa_set_volume(ucontrol->value.integer.value[0]); 7352} 7353 7354#define volume_alsa_mute_info snd_ctl_boolean_mono_info 7355 7356static int volume_alsa_mute_get(struct snd_kcontrol *kcontrol, 7357 struct snd_ctl_elem_value *ucontrol) 7358{ 7359 u8 s; 7360 int rc; 7361 7362 rc = volume_get_status(&s); 7363 if (rc < 0) 7364 return rc; 7365 7366 ucontrol->value.integer.value[0] = 7367 (s & TP_EC_AUDIO_MUTESW_MSK) ? 0 : 1; 7368 return 0; 7369} 7370 7371static int volume_alsa_mute_put(struct snd_kcontrol *kcontrol, 7372 struct snd_ctl_elem_value *ucontrol) 7373{ 7374 tpacpi_disclose_usertask("ALSA", "%smute\n", 7375 ucontrol->value.integer.value[0] ? 7376 "un" : ""); 7377 return volume_alsa_set_mute(!ucontrol->value.integer.value[0]); 7378} 7379 7380static struct snd_kcontrol_new volume_alsa_control_vol __initdata = { 7381 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 7382 .name = "Console Playback Volume", 7383 .index = 0, 7384 .access = SNDRV_CTL_ELEM_ACCESS_READ, 7385 .info = volume_alsa_vol_info, 7386 .get = volume_alsa_vol_get, 7387}; 7388 7389static struct snd_kcontrol_new volume_alsa_control_mute __initdata = { 7390 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 7391 .name = "Console Playback Switch", 7392 .index = 0, 7393 .access = SNDRV_CTL_ELEM_ACCESS_READ, 7394 .info = volume_alsa_mute_info, 7395 .get = volume_alsa_mute_get, 7396}; 7397 7398static void volume_suspend(void) 7399{ 7400 tpacpi_volume_checkpoint_nvram(); 7401} 7402 7403static void volume_resume(void) 7404{ 7405 if (software_mute_active) { 7406 if (volume_set_software_mute(false) < 0) 7407 pr_warn("Failed to restore software mute\n"); 7408 } else { 7409 volume_alsa_notify_change(); 7410 } 7411} 7412 7413static void volume_shutdown(void) 7414{ 7415 tpacpi_volume_checkpoint_nvram(); 7416} 7417 7418static void volume_exit(void) 7419{ 7420 if (alsa_card) { 7421 snd_card_free(alsa_card); 7422 alsa_card = NULL; 7423 } 7424 7425 tpacpi_volume_checkpoint_nvram(); 7426 7427 if (software_mute_active) 7428 volume_exit_software_mute(); 7429} 7430 7431static int __init volume_create_alsa_mixer(void) 7432{ 7433 struct snd_card *card; 7434 struct tpacpi_alsa_data *data; 7435 struct snd_kcontrol *ctl_vol; 7436 struct snd_kcontrol *ctl_mute; 7437 int rc; 7438 7439 rc = snd_card_new(&tpacpi_pdev->dev, 7440 alsa_index, alsa_id, THIS_MODULE, 7441 sizeof(struct tpacpi_alsa_data), &card); 7442 if (rc < 0 || !card) { 7443 pr_err("Failed to create ALSA card structures: %d\n", rc); 7444 return -ENODEV; 7445 } 7446 7447 BUG_ON(!card->private_data); 7448 data = card->private_data; 7449 data->card = card; 7450 7451 strscpy(card->driver, TPACPI_ALSA_DRVNAME); 7452 strscpy(card->shortname, TPACPI_ALSA_SHRTNAME); 7453 snprintf(card->mixername, sizeof(card->mixername), "ThinkPad EC %s", 7454 (thinkpad_id.ec_version_str) ? 7455 thinkpad_id.ec_version_str : "(unknown)"); 7456 snprintf(card->longname, sizeof(card->longname), 7457 "%s at EC reg 0x%02x, fw %s", card->shortname, TP_EC_AUDIO, 7458 (thinkpad_id.ec_version_str) ? 7459 thinkpad_id.ec_version_str : "unknown"); 7460 7461 if (volume_control_allowed) { 7462 volume_alsa_control_vol.put = volume_alsa_vol_put; 7463 volume_alsa_control_vol.access = 7464 SNDRV_CTL_ELEM_ACCESS_READWRITE; 7465 7466 volume_alsa_control_mute.put = volume_alsa_mute_put; 7467 volume_alsa_control_mute.access = 7468 SNDRV_CTL_ELEM_ACCESS_READWRITE; 7469 } 7470 7471 if (!tp_features.mixer_no_level_control) { 7472 ctl_vol = snd_ctl_new1(&volume_alsa_control_vol, NULL); 7473 rc = snd_ctl_add(card, ctl_vol); 7474 if (rc < 0) { 7475 pr_err("Failed to create ALSA volume control: %d\n", 7476 rc); 7477 goto err_exit; 7478 } 7479 data->ctl_vol_id = &ctl_vol->id; 7480 } 7481 7482 ctl_mute = snd_ctl_new1(&volume_alsa_control_mute, NULL); 7483 rc = snd_ctl_add(card, ctl_mute); 7484 if (rc < 0) { 7485 pr_err("Failed to create ALSA mute control: %d\n", rc); 7486 goto err_exit; 7487 } 7488 data->ctl_mute_id = &ctl_mute->id; 7489 7490 rc = snd_card_register(card); 7491 if (rc < 0) { 7492 pr_err("Failed to register ALSA card: %d\n", rc); 7493 goto err_exit; 7494 } 7495 7496 alsa_card = card; 7497 return 0; 7498 7499err_exit: 7500 snd_card_free(card); 7501 return -ENODEV; 7502} 7503 7504#define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */ 7505#define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */ 7506 7507static const struct tpacpi_quirk volume_quirk_table[] __initconst = { 7508 /* Whitelist volume level on all IBM by default */ 7509 { .vendor = PCI_VENDOR_ID_IBM, 7510 .bios = TPACPI_MATCH_ANY, 7511 .ec = TPACPI_MATCH_ANY, 7512 .quirks = TPACPI_VOL_Q_LEVEL }, 7513 7514 /* Lenovo models with volume control (needs confirmation) */ 7515 TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL), /* R60/i */ 7516 TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL), /* R60e/i */ 7517 TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL), /* T60/p */ 7518 TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL), /* X60/s */ 7519 TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL), /* X60t */ 7520 TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL), /* Z60 */ 7521 TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL), /* Z61 */ 7522 7523 /* Whitelist mute-only on all Lenovo by default */ 7524 { .vendor = PCI_VENDOR_ID_LENOVO, 7525 .bios = TPACPI_MATCH_ANY, 7526 .ec = TPACPI_MATCH_ANY, 7527 .quirks = TPACPI_VOL_Q_MUTEONLY } 7528}; 7529 7530static int __init volume_init(struct ibm_init_struct *iibm) 7531{ 7532 unsigned long quirks; 7533 int rc; 7534 7535 vdbg_printk(TPACPI_DBG_INIT, "initializing volume subdriver\n"); 7536 7537 mutex_init(&volume_mutex); 7538 7539 /* 7540 * Check for module parameter bogosity, note that we 7541 * init volume_mode to TPACPI_VOL_MODE_MAX in order to be 7542 * able to detect "unspecified" 7543 */ 7544 if (volume_mode > TPACPI_VOL_MODE_MAX) 7545 return -EINVAL; 7546 7547 if (volume_mode == TPACPI_VOL_MODE_UCMS_STEP) { 7548 pr_err("UCMS step volume mode not implemented, please contact %s\n", 7549 TPACPI_MAIL); 7550 return -ENODEV; 7551 } 7552 7553 if (volume_capabilities >= TPACPI_VOL_CAP_MAX) 7554 return -EINVAL; 7555 7556 /* 7557 * The ALSA mixer is our primary interface. 7558 * When disabled, don't install the subdriver at all 7559 */ 7560 if (!alsa_enable) { 7561 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7562 "ALSA mixer disabled by parameter, not loading volume subdriver...\n"); 7563 return -ENODEV; 7564 } 7565 7566 quirks = tpacpi_check_quirks(volume_quirk_table, 7567 ARRAY_SIZE(volume_quirk_table)); 7568 7569 switch (volume_capabilities) { 7570 case TPACPI_VOL_CAP_AUTO: 7571 if (quirks & TPACPI_VOL_Q_MUTEONLY) 7572 tp_features.mixer_no_level_control = 1; 7573 else if (quirks & TPACPI_VOL_Q_LEVEL) 7574 tp_features.mixer_no_level_control = 0; 7575 else 7576 return -ENODEV; /* no mixer */ 7577 break; 7578 case TPACPI_VOL_CAP_VOLMUTE: 7579 tp_features.mixer_no_level_control = 0; 7580 break; 7581 case TPACPI_VOL_CAP_MUTEONLY: 7582 tp_features.mixer_no_level_control = 1; 7583 break; 7584 default: 7585 return -ENODEV; 7586 } 7587 7588 if (volume_capabilities != TPACPI_VOL_CAP_AUTO) 7589 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7590 "using user-supplied volume_capabilities=%d\n", 7591 volume_capabilities); 7592 7593 if (volume_mode == TPACPI_VOL_MODE_AUTO || 7594 volume_mode == TPACPI_VOL_MODE_MAX) { 7595 volume_mode = TPACPI_VOL_MODE_ECNVRAM; 7596 7597 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7598 "driver auto-selected volume_mode=%d\n", 7599 volume_mode); 7600 } else { 7601 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7602 "using user-supplied volume_mode=%d\n", 7603 volume_mode); 7604 } 7605 7606 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7607 "mute is supported, volume control is %s\n", 7608 str_supported(!tp_features.mixer_no_level_control)); 7609 7610 if (software_mute_requested && volume_set_software_mute(true) == 0) { 7611 software_mute_active = true; 7612 } else { 7613 rc = volume_create_alsa_mixer(); 7614 if (rc) { 7615 pr_err("Could not create the ALSA mixer interface\n"); 7616 return rc; 7617 } 7618 7619 pr_info("Console audio control enabled, mode: %s\n", 7620 (volume_control_allowed) ? 7621 "override (read/write)" : 7622 "monitor (read only)"); 7623 } 7624 7625 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7626 "registering volume hotkeys as change notification\n"); 7627 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask 7628 | TP_ACPI_HKEY_VOLUP_MASK 7629 | TP_ACPI_HKEY_VOLDWN_MASK 7630 | TP_ACPI_HKEY_MUTE_MASK); 7631 7632 return 0; 7633} 7634 7635static int volume_read(struct seq_file *m) 7636{ 7637 u8 status; 7638 7639 if (volume_get_status(&status) < 0) { 7640 seq_printf(m, "level:\t\tunreadable\n"); 7641 } else { 7642 if (tp_features.mixer_no_level_control) 7643 seq_printf(m, "level:\t\tunsupported\n"); 7644 else 7645 seq_printf(m, "level:\t\t%d\n", 7646 status & TP_EC_AUDIO_LVL_MSK); 7647 7648 seq_printf(m, "mute:\t\t%s\n", str_on_off(status & BIT(TP_EC_AUDIO_MUTESW))); 7649 7650 if (volume_control_allowed) { 7651 seq_printf(m, "commands:\tunmute, mute\n"); 7652 if (!tp_features.mixer_no_level_control) { 7653 seq_printf(m, "commands:\tup, down\n"); 7654 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n", 7655 TP_EC_VOLUME_MAX); 7656 } 7657 } 7658 } 7659 7660 return 0; 7661} 7662 7663static int volume_write(char *buf) 7664{ 7665 u8 s; 7666 u8 new_level, new_mute; 7667 int l; 7668 char *cmd; 7669 int rc; 7670 7671 /* 7672 * We do allow volume control at driver startup, so that the 7673 * user can set initial state through the volume=... parameter hack. 7674 */ 7675 if (!volume_control_allowed && tpacpi_lifecycle != TPACPI_LIFE_INIT) { 7676 if (unlikely(!tp_warned.volume_ctrl_forbidden)) { 7677 tp_warned.volume_ctrl_forbidden = 1; 7678 pr_notice("Console audio control in monitor mode, changes are not allowed\n"); 7679 pr_notice("Use the volume_control=1 module parameter to enable volume control\n"); 7680 } 7681 return -EPERM; 7682 } 7683 7684 rc = volume_get_status(&s); 7685 if (rc < 0) 7686 return rc; 7687 7688 new_level = s & TP_EC_AUDIO_LVL_MSK; 7689 new_mute = s & TP_EC_AUDIO_MUTESW_MSK; 7690 7691 while ((cmd = strsep(&buf, ","))) { 7692 if (!tp_features.mixer_no_level_control) { 7693 if (strstarts(cmd, "up")) { 7694 if (new_mute) 7695 new_mute = 0; 7696 else if (new_level < TP_EC_VOLUME_MAX) 7697 new_level++; 7698 continue; 7699 } else if (strstarts(cmd, "down")) { 7700 if (new_mute) 7701 new_mute = 0; 7702 else if (new_level > 0) 7703 new_level--; 7704 continue; 7705 } else if (sscanf(cmd, "level %u", &l) == 1 && 7706 l >= 0 && l <= TP_EC_VOLUME_MAX) { 7707 new_level = l; 7708 continue; 7709 } 7710 } 7711 if (strstarts(cmd, "mute")) 7712 new_mute = TP_EC_AUDIO_MUTESW_MSK; 7713 else if (strstarts(cmd, "unmute")) 7714 new_mute = 0; 7715 else 7716 return -EINVAL; 7717 } 7718 7719 if (tp_features.mixer_no_level_control) { 7720 tpacpi_disclose_usertask("procfs volume", "%smute\n", 7721 new_mute ? "" : "un"); 7722 rc = volume_set_mute(!!new_mute); 7723 } else { 7724 tpacpi_disclose_usertask("procfs volume", 7725 "%smute and set level to %d\n", 7726 new_mute ? "" : "un", new_level); 7727 rc = volume_set_status(new_mute | new_level); 7728 } 7729 volume_alsa_notify_change(); 7730 7731 return (rc == -EINTR) ? -ERESTARTSYS : rc; 7732} 7733 7734static struct ibm_struct volume_driver_data = { 7735 .name = "volume", 7736 .read = volume_read, 7737 .write = volume_write, 7738 .exit = volume_exit, 7739 .suspend = volume_suspend, 7740 .resume = volume_resume, 7741 .shutdown = volume_shutdown, 7742}; 7743 7744#else /* !CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 7745 7746#define alsa_card NULL 7747 7748static inline void volume_alsa_notify_change(void) 7749{ 7750} 7751 7752static int __init volume_init(struct ibm_init_struct *iibm) 7753{ 7754 pr_info("volume: disabled as there is no ALSA support in this kernel\n"); 7755 7756 return -ENODEV; 7757} 7758 7759static struct ibm_struct volume_driver_data = { 7760 .name = "volume", 7761}; 7762 7763#endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 7764 7765/************************************************************************* 7766 * Fan subdriver 7767 */ 7768 7769/* 7770 * FAN ACCESS MODES 7771 * 7772 * TPACPI_FAN_RD_ACPI_GFAN: 7773 * ACPI GFAN method: returns fan level 7774 * 7775 * see TPACPI_FAN_WR_ACPI_SFAN 7776 * EC 0x2f (HFSP) not available if GFAN exists 7777 * 7778 * TPACPI_FAN_WR_ACPI_SFAN: 7779 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max) 7780 * 7781 * EC 0x2f (HFSP) might be available *for reading*, but do not use 7782 * it for writing. 7783 * 7784 * TPACPI_FAN_RD_ACPI_FANG: 7785 * ACPI FANG method: returns fan control register 7786 * 7787 * Takes one parameter which is 0x8100 plus the offset to EC memory 7788 * address 0xf500 and returns the byte at this address. 7789 * 7790 * 0xf500: 7791 * When the value is less than 9 automatic mode is enabled 7792 * 0xf502: 7793 * Contains the current fan speed from 0-100% 7794 * 0xf506: 7795 * Bit 7 has to be set in order to enable manual control by 7796 * writing a value >= 9 to 0xf500 7797 * 7798 * TPACPI_FAN_WR_ACPI_FANW: 7799 * ACPI FANW method: sets fan control registers 7800 * 7801 * Takes 0x8100 plus the offset to EC memory address 0xf500 and the 7802 * value to be written there as parameters. 7803 * 7804 * see TPACPI_FAN_RD_ACPI_FANG 7805 * 7806 * TPACPI_FAN_WR_TPEC: 7807 * ThinkPad EC register 0x2f (HFSP): fan control loop mode 7808 * Supported on almost all ThinkPads 7809 * 7810 * Fan speed changes of any sort (including those caused by the 7811 * disengaged mode) are usually done slowly by the firmware as the 7812 * maximum amount of fan duty cycle change per second seems to be 7813 * limited. 7814 * 7815 * Reading is not available if GFAN exists. 7816 * Writing is not available if SFAN exists. 7817 * 7818 * Bits 7819 * 7 automatic mode engaged; 7820 * (default operation mode of the ThinkPad) 7821 * fan level is ignored in this mode. 7822 * 6 full speed mode (takes precedence over bit 7); 7823 * not available on all thinkpads. May disable 7824 * the tachometer while the fan controller ramps up 7825 * the speed (which can take up to a few *minutes*). 7826 * Speeds up fan to 100% duty-cycle, which is far above 7827 * the standard RPM levels. It is not impossible that 7828 * it could cause hardware damage. 7829 * 5-3 unused in some models. Extra bits for fan level 7830 * in others, but still useless as all values above 7831 * 7 map to the same speed as level 7 in these models. 7832 * 2-0 fan level (0..7 usually) 7833 * 0x00 = stop 7834 * 0x07 = max (set when temperatures critical) 7835 * Some ThinkPads may have other levels, see 7836 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41) 7837 * 7838 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at 7839 * boot. Apparently the EC does not initialize it, so unless ACPI DSDT 7840 * does so, its initial value is meaningless (0x07). 7841 * 7842 * For firmware bugs, refer to: 7843 * https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues 7844 * 7845 * ---- 7846 * 7847 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB): 7848 * Main fan tachometer reading (in RPM) 7849 * 7850 * This register is present on all ThinkPads with a new-style EC, and 7851 * it is known not to be present on the A21m/e, and T22, as there is 7852 * something else in offset 0x84 according to the ACPI DSDT. Other 7853 * ThinkPads from this same time period (and earlier) probably lack the 7854 * tachometer as well. 7855 * 7856 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware 7857 * was never fixed by IBM to report the EC firmware version string 7858 * probably support the tachometer (like the early X models), so 7859 * detecting it is quite hard. We need more data to know for sure. 7860 * 7861 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings 7862 * might result. 7863 * 7864 * FIRMWARE BUG: may go stale while the EC is switching to full speed 7865 * mode. 7866 * 7867 * For firmware bugs, refer to: 7868 * https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues 7869 * 7870 * ---- 7871 * 7872 * ThinkPad EC register 0x31 bit 0 (only on select models) 7873 * 7874 * When bit 0 of EC register 0x31 is zero, the tachometer registers 7875 * show the speed of the main fan. When bit 0 of EC register 0x31 7876 * is one, the tachometer registers show the speed of the auxiliary 7877 * fan. 7878 * 7879 * Fan control seems to affect both fans, regardless of the state 7880 * of this bit. 7881 * 7882 * So far, only the firmware for the X60/X61 non-tablet versions 7883 * seem to support this (firmware TP-7M). 7884 * 7885 * TPACPI_FAN_WR_ACPI_FANS: 7886 * ThinkPad X31, X40, X41. Not available in the X60. 7887 * 7888 * FANS ACPI handle: takes three arguments: low speed, medium speed, 7889 * high speed. ACPI DSDT seems to map these three speeds to levels 7890 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH 7891 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3") 7892 * 7893 * The speeds are stored on handles 7894 * (FANA:FAN9), (FANC:FANB), (FANE:FAND). 7895 * 7896 * There are three default speed sets, accessible as handles: 7897 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H 7898 * 7899 * ACPI DSDT switches which set is in use depending on various 7900 * factors. 7901 * 7902 * TPACPI_FAN_WR_TPEC is also available and should be used to 7903 * command the fan. The X31/X40/X41 seems to have 8 fan levels, 7904 * but the ACPI tables just mention level 7. 7905 * 7906 * TPACPI_FAN_RD_TPEC_NS: 7907 * This mode is used for a few ThinkPads (L13 Yoga Gen2, X13 Yoga Gen2 etc.) 7908 * that are using non-standard EC locations for reporting fan speeds. 7909 * Currently these platforms only provide fan rpm reporting. 7910 * 7911 */ 7912 7913#define FAN_RPM_CAL_CONST 491520 /* FAN RPM calculation offset for some non-standard ECFW */ 7914 7915#define FAN_NS_CTRL_STATUS BIT(2) /* Bit which determines control is enabled or not */ 7916#define FAN_NS_CTRL BIT(4) /* Bit which determines control is by host or EC */ 7917#define FAN_CLOCK_TPM (22500*60) /* Ticks per minute for a 22.5 kHz clock */ 7918 7919enum { /* Fan control constants */ 7920 fan_status_offset = 0x2f, /* EC register 0x2f */ 7921 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM) 7922 * 0x84 must be read before 0x85 */ 7923 fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M) 7924 bit 0 selects which fan is active */ 7925 7926 fan_status_offset_ns = 0x93, /* Special status/control offset for non-standard EC Fan1 */ 7927 fan2_status_offset_ns = 0x96, /* Special status/control offset for non-standard EC Fan2 */ 7928 fan_rpm_status_ns = 0x95, /* Special offset for Fan1 RPM status for non-standard EC */ 7929 fan2_rpm_status_ns = 0x98, /* Special offset for Fan2 RPM status for non-standard EC */ 7930 7931 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */ 7932 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */ 7933 7934 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */ 7935}; 7936 7937enum fan_status_access_mode { 7938 TPACPI_FAN_NONE = 0, /* No fan status or control */ 7939 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */ 7940 TPACPI_FAN_RD_ACPI_FANG, /* Use ACPI FANG */ 7941 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */ 7942 TPACPI_FAN_RD_TPEC_NS, /* Use non-standard ACPI EC regs (eg: L13 Yoga gen2 etc.) */ 7943}; 7944 7945enum fan_control_access_mode { 7946 TPACPI_FAN_WR_NONE = 0, /* No fan control */ 7947 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */ 7948 TPACPI_FAN_WR_ACPI_FANW, /* Use ACPI FANW */ 7949 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */ 7950 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */ 7951}; 7952 7953enum fan_control_commands { 7954 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */ 7955 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */ 7956 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd, 7957 * and also watchdog cmd */ 7958}; 7959 7960static bool fan_control_allowed; 7961 7962static enum fan_status_access_mode fan_status_access_mode; 7963static enum fan_control_access_mode fan_control_access_mode; 7964static enum fan_control_commands fan_control_commands; 7965 7966static u8 fan_control_initial_status; 7967static u8 fan_control_desired_level; 7968static u8 fan_control_resume_level; 7969static int fan_watchdog_maxinterval; 7970 7971static bool fan_with_ns_addr; 7972static bool ecfw_with_fan_dec_rpm; 7973static bool fan_speed_in_tpr; 7974 7975static struct mutex fan_mutex; 7976 7977static void fan_watchdog_fire(struct work_struct *ignored); 7978static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire); 7979 7980TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */ 7981TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */ 7982 "\\FSPD", /* 600e/x, 770e, 770x */ 7983 ); /* all others */ 7984TPACPI_HANDLE(fang, ec, "FANG", /* E531 */ 7985 ); /* all others */ 7986TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */ 7987 "JFNS", /* 770x-JL */ 7988 ); /* all others */ 7989TPACPI_HANDLE(fanw, ec, "FANW", /* E531 */ 7990 ); /* all others */ 7991 7992/* 7993 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the 7994 * HFSP register at boot, so it contains 0x07 but the Thinkpad could 7995 * be in auto mode (0x80). 7996 * 7997 * This is corrected by any write to HFSP either by the driver, or 7998 * by the firmware. 7999 * 8000 * We assume 0x07 really means auto mode while this quirk is active, 8001 * as this is far more likely than the ThinkPad being in level 7, 8002 * which is only used by the firmware during thermal emergencies. 8003 * 8004 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52), 8005 * TP-70 (T43, R52), which are known to be buggy. 8006 */ 8007 8008static void fan_quirk1_setup(void) 8009{ 8010 if (fan_control_initial_status == 0x07) { 8011 pr_notice("fan_init: initial fan status is unknown, assuming it is in auto mode\n"); 8012 tp_features.fan_ctrl_status_undef = 1; 8013 } 8014} 8015 8016static void fan_quirk1_handle(u8 *fan_status) 8017{ 8018 if (unlikely(tp_features.fan_ctrl_status_undef)) { 8019 if (*fan_status != fan_control_initial_status) { 8020 /* something changed the HFSP regisnter since 8021 * driver init time, so it is not undefined 8022 * anymore */ 8023 tp_features.fan_ctrl_status_undef = 0; 8024 } else { 8025 /* Return most likely status. In fact, it 8026 * might be the only possible status */ 8027 *fan_status = TP_EC_FAN_AUTO; 8028 } 8029 } 8030} 8031 8032/* Select main fan on X60/X61, NOOP on others */ 8033static bool fan_select_fan1(void) 8034{ 8035 if (tp_features.second_fan) { 8036 u8 val; 8037 8038 if (ec_read(fan_select_offset, &val) < 0) 8039 return false; 8040 val &= 0xFEU; 8041 if (ec_write(fan_select_offset, val) < 0) 8042 return false; 8043 } 8044 return true; 8045} 8046 8047/* Select secondary fan on X60/X61 */ 8048static bool fan_select_fan2(void) 8049{ 8050 u8 val; 8051 8052 if (!tp_features.second_fan) 8053 return false; 8054 8055 if (ec_read(fan_select_offset, &val) < 0) 8056 return false; 8057 val |= 0x01U; 8058 if (ec_write(fan_select_offset, val) < 0) 8059 return false; 8060 8061 return true; 8062} 8063 8064static void fan_update_desired_level(u8 status) 8065{ 8066 lockdep_assert_held(&fan_mutex); 8067 8068 if ((status & 8069 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { 8070 if (status > 7) 8071 fan_control_desired_level = 7; 8072 else 8073 fan_control_desired_level = status; 8074 } 8075} 8076 8077static int fan_get_status(u8 *status) 8078{ 8079 u8 s; 8080 8081 /* TODO: 8082 * Add TPACPI_FAN_RD_ACPI_FANS ? */ 8083 8084 switch (fan_status_access_mode) { 8085 case TPACPI_FAN_RD_ACPI_GFAN: { 8086 /* 570, 600e/x, 770e, 770x */ 8087 int res; 8088 8089 if (unlikely(!acpi_evalf(gfan_handle, &res, NULL, "d"))) 8090 return -EIO; 8091 8092 if (likely(status)) 8093 *status = res & 0x07; 8094 8095 break; 8096 } 8097 case TPACPI_FAN_RD_ACPI_FANG: { 8098 /* E531 */ 8099 int mode, speed; 8100 8101 if (unlikely(!acpi_evalf(fang_handle, &mode, NULL, "dd", 0x8100))) 8102 return -EIO; 8103 if (unlikely(!acpi_evalf(fang_handle, &speed, NULL, "dd", 0x8102))) 8104 return -EIO; 8105 8106 if (likely(status)) { 8107 *status = speed * 7 / 100; 8108 if (mode < 9) 8109 *status |= TP_EC_FAN_AUTO; 8110 } 8111 8112 break; 8113 } 8114 case TPACPI_FAN_RD_TPEC: 8115 /* all except 570, 600e/x, 770e, 770x */ 8116 if (unlikely(!acpi_ec_read(fan_status_offset, &s))) 8117 return -EIO; 8118 8119 if (likely(status)) { 8120 *status = s; 8121 fan_quirk1_handle(status); 8122 } 8123 8124 break; 8125 case TPACPI_FAN_RD_TPEC_NS: 8126 /* Default mode is AUTO which means controlled by EC */ 8127 if (!acpi_ec_read(fan_status_offset_ns, &s)) 8128 return -EIO; 8129 8130 if (status) 8131 *status = s; 8132 8133 break; 8134 8135 default: 8136 return -ENXIO; 8137 } 8138 8139 return 0; 8140} 8141 8142static int fan_get_status_safe(u8 *status) 8143{ 8144 int rc; 8145 u8 s; 8146 8147 if (mutex_lock_killable(&fan_mutex)) 8148 return -ERESTARTSYS; 8149 rc = fan_get_status(&s); 8150 /* NS EC doesn't have register with level settings */ 8151 if (!rc && !fan_with_ns_addr) 8152 fan_update_desired_level(s); 8153 mutex_unlock(&fan_mutex); 8154 8155 if (rc) 8156 return rc; 8157 if (status) 8158 *status = s; 8159 8160 return 0; 8161} 8162 8163static int fan_get_speed(unsigned int *speed) 8164{ 8165 u8 hi, lo; 8166 8167 switch (fan_status_access_mode) { 8168 case TPACPI_FAN_RD_TPEC: 8169 /* all except 570, 600e/x, 770e, 770x */ 8170 if (unlikely(!fan_select_fan1())) 8171 return -EIO; 8172 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) || 8173 !acpi_ec_read(fan_rpm_offset + 1, &hi))) 8174 return -EIO; 8175 8176 if (likely(speed)) { 8177 *speed = (hi << 8) | lo; 8178 if (fan_speed_in_tpr && *speed != 0) 8179 *speed = FAN_CLOCK_TPM / *speed; 8180 } 8181 break; 8182 case TPACPI_FAN_RD_TPEC_NS: 8183 if (!acpi_ec_read(fan_rpm_status_ns, &lo)) 8184 return -EIO; 8185 8186 if (speed) 8187 *speed = lo ? FAN_RPM_CAL_CONST / lo : 0; 8188 break; 8189 8190 default: 8191 return -ENXIO; 8192 } 8193 8194 return 0; 8195} 8196 8197static int fan2_get_speed(unsigned int *speed) 8198{ 8199 u8 hi, lo, status; 8200 bool rc; 8201 8202 switch (fan_status_access_mode) { 8203 case TPACPI_FAN_RD_TPEC: 8204 /* all except 570, 600e/x, 770e, 770x */ 8205 if (unlikely(!fan_select_fan2())) 8206 return -EIO; 8207 rc = !acpi_ec_read(fan_rpm_offset, &lo) || 8208 !acpi_ec_read(fan_rpm_offset + 1, &hi); 8209 fan_select_fan1(); /* play it safe */ 8210 if (rc) 8211 return -EIO; 8212 8213 if (likely(speed)) { 8214 *speed = (hi << 8) | lo; 8215 if (fan_speed_in_tpr && *speed != 0) 8216 *speed = FAN_CLOCK_TPM / *speed; 8217 } 8218 break; 8219 8220 case TPACPI_FAN_RD_TPEC_NS: 8221 rc = !acpi_ec_read(fan2_status_offset_ns, &status); 8222 if (rc) 8223 return -EIO; 8224 if (!(status & FAN_NS_CTRL_STATUS)) { 8225 pr_info("secondary fan control not supported\n"); 8226 return -EIO; 8227 } 8228 rc = !acpi_ec_read(fan2_rpm_status_ns, &lo); 8229 if (rc) 8230 return -EIO; 8231 if (speed) 8232 *speed = lo ? FAN_RPM_CAL_CONST / lo : 0; 8233 break; 8234 case TPACPI_FAN_RD_ACPI_FANG: { 8235 /* E531 */ 8236 int speed_tmp; 8237 8238 if (unlikely(!acpi_evalf(fang_handle, &speed_tmp, NULL, "dd", 0x8102))) 8239 return -EIO; 8240 8241 if (likely(speed)) 8242 *speed = speed_tmp * 65535 / 100; 8243 break; 8244 } 8245 8246 default: 8247 return -ENXIO; 8248 } 8249 8250 return 0; 8251} 8252 8253static int fan_set_level(int level) 8254{ 8255 if (!fan_control_allowed) 8256 return -EPERM; 8257 8258 switch (fan_control_access_mode) { 8259 case TPACPI_FAN_WR_ACPI_SFAN: 8260 if ((level < 0) || (level > 7)) 8261 return -EINVAL; 8262 8263 if (tp_features.second_fan_ctl) { 8264 if (!fan_select_fan2() || 8265 !acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) { 8266 pr_warn("Couldn't set 2nd fan level, disabling support\n"); 8267 tp_features.second_fan_ctl = 0; 8268 } 8269 fan_select_fan1(); 8270 } 8271 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) 8272 return -EIO; 8273 break; 8274 8275 case TPACPI_FAN_WR_ACPI_FANS: 8276 case TPACPI_FAN_WR_TPEC: 8277 if (!(level & TP_EC_FAN_AUTO) && 8278 !(level & TP_EC_FAN_FULLSPEED) && 8279 ((level < 0) || (level > 7))) 8280 return -EINVAL; 8281 8282 /* safety net should the EC not support AUTO 8283 * or FULLSPEED mode bits and just ignore them */ 8284 if (level & TP_EC_FAN_FULLSPEED) 8285 level |= 7; /* safety min speed 7 */ 8286 else if (level & TP_EC_FAN_AUTO) 8287 level |= 4; /* safety min speed 4 */ 8288 8289 if (tp_features.second_fan_ctl) { 8290 if (!fan_select_fan2() || 8291 !acpi_ec_write(fan_status_offset, level)) { 8292 pr_warn("Couldn't set 2nd fan level, disabling support\n"); 8293 tp_features.second_fan_ctl = 0; 8294 } 8295 fan_select_fan1(); 8296 8297 } 8298 if (!acpi_ec_write(fan_status_offset, level)) 8299 return -EIO; 8300 else 8301 tp_features.fan_ctrl_status_undef = 0; 8302 break; 8303 8304 case TPACPI_FAN_WR_ACPI_FANW: 8305 if (!(level & TP_EC_FAN_AUTO) && (level < 0 || level > 7)) 8306 return -EINVAL; 8307 if (level & TP_EC_FAN_FULLSPEED) 8308 return -EINVAL; 8309 8310 if (level & TP_EC_FAN_AUTO) { 8311 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8106, 0x05)) { 8312 return -EIO; 8313 } 8314 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8100, 0x00)) { 8315 return -EIO; 8316 } 8317 } else { 8318 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8106, 0x45)) { 8319 return -EIO; 8320 } 8321 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8100, 0xff)) { 8322 return -EIO; 8323 } 8324 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8102, level * 100 / 7)) { 8325 return -EIO; 8326 } 8327 } 8328 break; 8329 8330 default: 8331 return -ENXIO; 8332 } 8333 8334 vdbg_printk(TPACPI_DBG_FAN, 8335 "fan control: set fan control register to 0x%02x\n", level); 8336 return 0; 8337} 8338 8339static int fan_set_level_safe(int level) 8340{ 8341 int rc; 8342 8343 if (!fan_control_allowed) 8344 return -EPERM; 8345 8346 if (mutex_lock_killable(&fan_mutex)) 8347 return -ERESTARTSYS; 8348 8349 if (level == TPACPI_FAN_LAST_LEVEL) 8350 level = fan_control_desired_level; 8351 8352 rc = fan_set_level(level); 8353 if (!rc) 8354 fan_update_desired_level(level); 8355 8356 mutex_unlock(&fan_mutex); 8357 return rc; 8358} 8359 8360static int fan_set_enable(void) 8361{ 8362 u8 s = 0; 8363 int rc; 8364 8365 if (!fan_control_allowed) 8366 return -EPERM; 8367 8368 if (mutex_lock_killable(&fan_mutex)) 8369 return -ERESTARTSYS; 8370 8371 switch (fan_control_access_mode) { 8372 case TPACPI_FAN_WR_ACPI_FANS: 8373 case TPACPI_FAN_WR_TPEC: 8374 rc = fan_get_status(&s); 8375 if (rc) 8376 break; 8377 8378 /* Don't go out of emergency fan mode */ 8379 if (s != 7) { 8380 s &= 0x07; 8381 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */ 8382 } 8383 8384 if (!acpi_ec_write(fan_status_offset, s)) 8385 rc = -EIO; 8386 else { 8387 tp_features.fan_ctrl_status_undef = 0; 8388 rc = 0; 8389 } 8390 break; 8391 8392 case TPACPI_FAN_WR_ACPI_SFAN: 8393 rc = fan_get_status(&s); 8394 if (rc) 8395 break; 8396 8397 s &= 0x07; 8398 8399 /* Set fan to at least level 4 */ 8400 s |= 4; 8401 8402 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s)) 8403 rc = -EIO; 8404 else 8405 rc = 0; 8406 break; 8407 8408 case TPACPI_FAN_WR_ACPI_FANW: 8409 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8106, 0x05)) { 8410 rc = -EIO; 8411 break; 8412 } 8413 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8100, 0x00)) { 8414 rc = -EIO; 8415 break; 8416 } 8417 8418 rc = 0; 8419 break; 8420 8421 default: 8422 rc = -ENXIO; 8423 } 8424 8425 mutex_unlock(&fan_mutex); 8426 8427 if (!rc) 8428 vdbg_printk(TPACPI_DBG_FAN, 8429 "fan control: set fan control register to 0x%02x\n", 8430 s); 8431 return rc; 8432} 8433 8434static int fan_set_disable(void) 8435{ 8436 int rc; 8437 8438 if (!fan_control_allowed) 8439 return -EPERM; 8440 8441 if (mutex_lock_killable(&fan_mutex)) 8442 return -ERESTARTSYS; 8443 8444 rc = 0; 8445 switch (fan_control_access_mode) { 8446 case TPACPI_FAN_WR_ACPI_FANS: 8447 case TPACPI_FAN_WR_TPEC: 8448 if (!acpi_ec_write(fan_status_offset, 0x00)) 8449 rc = -EIO; 8450 else { 8451 fan_control_desired_level = 0; 8452 tp_features.fan_ctrl_status_undef = 0; 8453 } 8454 break; 8455 8456 case TPACPI_FAN_WR_ACPI_SFAN: 8457 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00)) 8458 rc = -EIO; 8459 else 8460 fan_control_desired_level = 0; 8461 break; 8462 8463 case TPACPI_FAN_WR_ACPI_FANW: 8464 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8106, 0x45)) { 8465 rc = -EIO; 8466 break; 8467 } 8468 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8100, 0xff)) { 8469 rc = -EIO; 8470 break; 8471 } 8472 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8102, 0x00)) { 8473 rc = -EIO; 8474 break; 8475 } 8476 rc = 0; 8477 break; 8478 8479 default: 8480 rc = -ENXIO; 8481 } 8482 8483 if (!rc) 8484 vdbg_printk(TPACPI_DBG_FAN, 8485 "fan control: set fan control register to 0\n"); 8486 8487 mutex_unlock(&fan_mutex); 8488 return rc; 8489} 8490 8491static int fan_set_speed(int speed) 8492{ 8493 int rc; 8494 8495 if (!fan_control_allowed) 8496 return -EPERM; 8497 8498 if (mutex_lock_killable(&fan_mutex)) 8499 return -ERESTARTSYS; 8500 8501 rc = 0; 8502 switch (fan_control_access_mode) { 8503 case TPACPI_FAN_WR_ACPI_FANS: 8504 if (speed >= 0 && speed <= 65535) { 8505 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd", 8506 speed, speed, speed)) 8507 rc = -EIO; 8508 } else 8509 rc = -EINVAL; 8510 break; 8511 8512 case TPACPI_FAN_WR_ACPI_FANW: 8513 if (speed >= 0 && speed <= 65535) { 8514 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8106, 0x45)) { 8515 rc = -EIO; 8516 break; 8517 } 8518 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8100, 0xff)) { 8519 rc = -EIO; 8520 break; 8521 } 8522 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 8523 0x8102, speed * 100 / 65535)) 8524 rc = -EIO; 8525 } else 8526 rc = -EINVAL; 8527 break; 8528 8529 default: 8530 rc = -ENXIO; 8531 } 8532 8533 mutex_unlock(&fan_mutex); 8534 return rc; 8535} 8536 8537static void fan_watchdog_reset(void) 8538{ 8539 if (fan_control_access_mode == TPACPI_FAN_WR_NONE) 8540 return; 8541 8542 if (fan_watchdog_maxinterval > 0 && 8543 tpacpi_lifecycle != TPACPI_LIFE_EXITING) 8544 mod_delayed_work(tpacpi_wq, &fan_watchdog_task, 8545 secs_to_jiffies(fan_watchdog_maxinterval)); 8546 else 8547 cancel_delayed_work(&fan_watchdog_task); 8548} 8549 8550static void fan_watchdog_fire(struct work_struct *ignored) 8551{ 8552 int rc; 8553 8554 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) 8555 return; 8556 8557 pr_notice("fan watchdog: enabling fan\n"); 8558 rc = fan_set_enable(); 8559 if (rc < 0) { 8560 pr_err("fan watchdog: error %d while enabling fan, will try again later...\n", 8561 rc); 8562 /* reschedule for later */ 8563 fan_watchdog_reset(); 8564 } 8565} 8566 8567/* 8568 * SYSFS fan layout: hwmon compatible (device) 8569 * 8570 * pwm*_enable: 8571 * 0: "disengaged" mode 8572 * 1: manual mode 8573 * 2: native EC "auto" mode (recommended, hardware default) 8574 * 8575 * pwm*: set speed in manual mode, ignored otherwise. 8576 * 0 is level 0; 255 is level 7. Intermediate points done with linear 8577 * interpolation. 8578 * 8579 * fan*_input: tachometer reading, RPM 8580 * 8581 * 8582 * SYSFS fan layout: extensions 8583 * 8584 * fan_watchdog (driver): 8585 * fan watchdog interval in seconds, 0 disables (default), max 120 8586 */ 8587 8588/* sysfs fan pwm1_enable ----------------------------------------------- */ 8589static ssize_t fan_pwm1_enable_show(struct device *dev, 8590 struct device_attribute *attr, 8591 char *buf) 8592{ 8593 int res, mode; 8594 u8 status; 8595 8596 res = fan_get_status_safe(&status); 8597 if (res) 8598 return res; 8599 8600 if (status & TP_EC_FAN_FULLSPEED) { 8601 mode = 0; 8602 } else if (status & TP_EC_FAN_AUTO) { 8603 mode = 2; 8604 } else 8605 mode = 1; 8606 8607 return sysfs_emit(buf, "%d\n", mode); 8608} 8609 8610static ssize_t fan_pwm1_enable_store(struct device *dev, 8611 struct device_attribute *attr, 8612 const char *buf, size_t count) 8613{ 8614 unsigned long t; 8615 int res, level; 8616 8617 if (parse_strtoul(buf, 2, &t)) 8618 return -EINVAL; 8619 8620 tpacpi_disclose_usertask("hwmon pwm1_enable", 8621 "set fan mode to %lu\n", t); 8622 8623 switch (t) { 8624 case 0: 8625 level = TP_EC_FAN_FULLSPEED; 8626 break; 8627 case 1: 8628 level = TPACPI_FAN_LAST_LEVEL; 8629 break; 8630 case 2: 8631 level = TP_EC_FAN_AUTO; 8632 break; 8633 case 3: 8634 /* reserved for software-controlled auto mode */ 8635 return -ENOSYS; 8636 default: 8637 return -EINVAL; 8638 } 8639 8640 res = fan_set_level_safe(level); 8641 if (res == -ENXIO) 8642 return -EINVAL; 8643 else if (res < 0) 8644 return res; 8645 8646 fan_watchdog_reset(); 8647 8648 return count; 8649} 8650 8651static DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, 8652 fan_pwm1_enable_show, fan_pwm1_enable_store); 8653 8654/* sysfs fan pwm1 ------------------------------------------------------ */ 8655static ssize_t fan_pwm1_show(struct device *dev, 8656 struct device_attribute *attr, 8657 char *buf) 8658{ 8659 int res; 8660 u8 status; 8661 8662 res = fan_get_status_safe(&status); 8663 if (res) 8664 return res; 8665 8666 if ((status & 8667 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0) 8668 status = fan_control_desired_level; 8669 8670 if (status > 7) 8671 status = 7; 8672 8673 return sysfs_emit(buf, "%u\n", (status * 255) / 7); 8674} 8675 8676static ssize_t fan_pwm1_store(struct device *dev, 8677 struct device_attribute *attr, 8678 const char *buf, size_t count) 8679{ 8680 unsigned long s; 8681 int rc; 8682 u8 status, newlevel; 8683 8684 if (parse_strtoul(buf, 255, &s)) 8685 return -EINVAL; 8686 8687 tpacpi_disclose_usertask("hwmon pwm1", 8688 "set fan speed to %lu\n", s); 8689 8690 /* scale down from 0-255 to 0-7 */ 8691 newlevel = (s >> 5) & 0x07; 8692 8693 if (mutex_lock_killable(&fan_mutex)) 8694 return -ERESTARTSYS; 8695 8696 rc = fan_get_status(&status); 8697 if (!rc && (status & 8698 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { 8699 rc = fan_set_level(newlevel); 8700 if (rc == -ENXIO) 8701 rc = -EINVAL; 8702 else if (!rc) { 8703 fan_update_desired_level(newlevel); 8704 fan_watchdog_reset(); 8705 } 8706 } 8707 8708 mutex_unlock(&fan_mutex); 8709 return (rc) ? rc : count; 8710} 8711 8712static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, fan_pwm1_show, fan_pwm1_store); 8713 8714/* sysfs fan fan1_input ------------------------------------------------ */ 8715static ssize_t fan_fan1_input_show(struct device *dev, 8716 struct device_attribute *attr, 8717 char *buf) 8718{ 8719 int res; 8720 unsigned int speed; 8721 8722 res = fan_get_speed(&speed); 8723 if (res < 0) 8724 return res; 8725 8726 /* Check for fan speeds displayed in hexadecimal */ 8727 if (!ecfw_with_fan_dec_rpm) 8728 return sysfs_emit(buf, "%u\n", speed); 8729 else 8730 return sysfs_emit(buf, "%x\n", speed); 8731} 8732 8733static DEVICE_ATTR(fan1_input, S_IRUGO, fan_fan1_input_show, NULL); 8734 8735/* sysfs fan fan2_input ------------------------------------------------ */ 8736static ssize_t fan_fan2_input_show(struct device *dev, 8737 struct device_attribute *attr, 8738 char *buf) 8739{ 8740 int res; 8741 unsigned int speed; 8742 8743 res = fan2_get_speed(&speed); 8744 if (res < 0) 8745 return res; 8746 8747 /* Check for fan speeds displayed in hexadecimal */ 8748 if (!ecfw_with_fan_dec_rpm) 8749 return sysfs_emit(buf, "%u\n", speed); 8750 else 8751 return sysfs_emit(buf, "%x\n", speed); 8752} 8753 8754static DEVICE_ATTR(fan2_input, S_IRUGO, fan_fan2_input_show, NULL); 8755 8756/* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */ 8757static ssize_t fan_watchdog_show(struct device_driver *drv, char *buf) 8758{ 8759 return sysfs_emit(buf, "%u\n", fan_watchdog_maxinterval); 8760} 8761 8762static ssize_t fan_watchdog_store(struct device_driver *drv, const char *buf, 8763 size_t count) 8764{ 8765 unsigned long t; 8766 8767 if (parse_strtoul(buf, 120, &t)) 8768 return -EINVAL; 8769 8770 if (!fan_control_allowed) 8771 return -EPERM; 8772 8773 fan_watchdog_maxinterval = t; 8774 fan_watchdog_reset(); 8775 8776 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t); 8777 8778 return count; 8779} 8780static DRIVER_ATTR_RW(fan_watchdog); 8781 8782/* --------------------------------------------------------------------- */ 8783 8784static struct attribute *fan_attributes[] = { 8785 &dev_attr_pwm1_enable.attr, 8786 &dev_attr_pwm1.attr, 8787 &dev_attr_fan1_input.attr, 8788 &dev_attr_fan2_input.attr, 8789 NULL 8790}; 8791 8792static umode_t fan_attr_is_visible(struct kobject *kobj, struct attribute *attr, 8793 int n) 8794{ 8795 if (fan_status_access_mode == TPACPI_FAN_NONE && 8796 fan_control_access_mode == TPACPI_FAN_WR_NONE) 8797 return 0; 8798 8799 if (attr == &dev_attr_fan2_input.attr) { 8800 if (!tp_features.second_fan) 8801 return 0; 8802 } 8803 8804 return attr->mode; 8805} 8806 8807static const struct attribute_group fan_attr_group = { 8808 .is_visible = fan_attr_is_visible, 8809 .attrs = fan_attributes, 8810}; 8811 8812static struct attribute *fan_driver_attributes[] = { 8813 &driver_attr_fan_watchdog.attr, 8814 NULL 8815}; 8816 8817static const struct attribute_group fan_driver_attr_group = { 8818 .is_visible = fan_attr_is_visible, 8819 .attrs = fan_driver_attributes, 8820}; 8821 8822#define TPACPI_FAN_Q1 0x0001 /* Uninitialized HFSP */ 8823#define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */ 8824#define TPACPI_FAN_2CTL 0x0004 /* selects fan2 control */ 8825#define TPACPI_FAN_NOFAN 0x0008 /* no fan available */ 8826#define TPACPI_FAN_NS 0x0010 /* For EC with non-Standard register addresses */ 8827#define TPACPI_FAN_DECRPM 0x0020 /* For ECFW's with RPM in register as decimal */ 8828#define TPACPI_FAN_TPR 0x0040 /* Fan speed is in Ticks Per Revolution */ 8829#define TPACPI_FAN_NOACPI 0x0080 /* Don't use ACPI methods even if detected */ 8830 8831static const struct tpacpi_quirk fan_quirk_table[] __initconst = { 8832 TPACPI_QEC_IBM('1', 'Y', TPACPI_FAN_Q1), 8833 TPACPI_QEC_IBM('7', '8', TPACPI_FAN_Q1), 8834 TPACPI_QEC_IBM('7', '6', TPACPI_FAN_Q1), 8835 TPACPI_QEC_IBM('7', '0', TPACPI_FAN_Q1), 8836 TPACPI_QEC_LNV('7', 'M', TPACPI_FAN_2FAN), 8837 TPACPI_Q_LNV('N', '1', TPACPI_FAN_2FAN), 8838 TPACPI_Q_LNV3('N', '1', 'D', TPACPI_FAN_2CTL), /* P70 */ 8839 TPACPI_Q_LNV3('N', '1', 'E', TPACPI_FAN_2CTL), /* P50 */ 8840 TPACPI_Q_LNV3('N', '1', 'T', TPACPI_FAN_2CTL), /* P71 */ 8841 TPACPI_Q_LNV3('N', '1', 'U', TPACPI_FAN_2CTL), /* P51 */ 8842 TPACPI_Q_LNV3('N', '2', 'C', TPACPI_FAN_2CTL), /* P52 / P72 */ 8843 TPACPI_Q_LNV3('N', '2', 'N', TPACPI_FAN_2CTL), /* P53 / P73 */ 8844 TPACPI_Q_LNV3('N', '2', 'E', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (1st gen) */ 8845 TPACPI_Q_LNV3('N', '2', 'O', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (2nd gen) */ 8846 TPACPI_Q_LNV3('N', '3', '0', TPACPI_FAN_2CTL), /* P15 (1st gen) / P15v (1st gen) */ 8847 TPACPI_Q_LNV3('N', '3', '7', TPACPI_FAN_2CTL), /* T15g (2nd gen) */ 8848 TPACPI_Q_LNV3('R', '1', 'F', TPACPI_FAN_NS), /* L13 Yoga Gen 2 */ 8849 TPACPI_Q_LNV3('N', '2', 'U', TPACPI_FAN_NS), /* X13 Yoga Gen 2*/ 8850 TPACPI_Q_LNV3('R', '0', 'R', TPACPI_FAN_NS), /* L380 */ 8851 TPACPI_Q_LNV3('R', '1', '5', TPACPI_FAN_NS), /* L13 Yoga Gen 1 */ 8852 TPACPI_Q_LNV3('R', '1', '0', TPACPI_FAN_NS), /* L390 */ 8853 TPACPI_Q_LNV3('N', '2', 'L', TPACPI_FAN_NS), /* X13 Yoga Gen 1 */ 8854 TPACPI_Q_LNV3('R', '0', 'T', TPACPI_FAN_NS), /* 11e Gen5 GL */ 8855 TPACPI_Q_LNV3('R', '1', 'D', TPACPI_FAN_NS), /* 11e Gen5 GL-R */ 8856 TPACPI_Q_LNV3('R', '0', 'V', TPACPI_FAN_NS), /* 11e Gen5 KL-Y */ 8857 TPACPI_Q_LNV3('N', '1', 'O', TPACPI_FAN_NOFAN), /* X1 Tablet (2nd gen) */ 8858 TPACPI_Q_LNV3('R', '0', 'Q', TPACPI_FAN_DECRPM),/* L480 */ 8859 TPACPI_Q_LNV('8', 'F', TPACPI_FAN_TPR), /* ThinkPad x120e */ 8860 TPACPI_Q_LNV3('R', '0', '0', TPACPI_FAN_NOACPI),/* E560 */ 8861 TPACPI_Q_LNV3('R', '1', '2', TPACPI_FAN_NOACPI),/* T495 */ 8862 TPACPI_Q_LNV3('R', '1', '3', TPACPI_FAN_NOACPI),/* T495s */ 8863}; 8864 8865static int __init fan_init(struct ibm_init_struct *iibm) 8866{ 8867 unsigned long quirks; 8868 8869 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8870 "initializing fan subdriver\n"); 8871 8872 mutex_init(&fan_mutex); 8873 fan_status_access_mode = TPACPI_FAN_NONE; 8874 fan_control_access_mode = TPACPI_FAN_WR_NONE; 8875 fan_control_commands = 0; 8876 fan_watchdog_maxinterval = 0; 8877 tp_features.fan_ctrl_status_undef = 0; 8878 tp_features.second_fan = 0; 8879 tp_features.second_fan_ctl = 0; 8880 fan_control_desired_level = 7; 8881 8882 if (tpacpi_is_ibm()) { 8883 TPACPI_ACPIHANDLE_INIT(fans); 8884 TPACPI_ACPIHANDLE_INIT(gfan); 8885 TPACPI_ACPIHANDLE_INIT(sfan); 8886 } 8887 if (tpacpi_is_lenovo()) { 8888 TPACPI_ACPIHANDLE_INIT(fang); 8889 TPACPI_ACPIHANDLE_INIT(fanw); 8890 } 8891 8892 quirks = tpacpi_check_quirks(fan_quirk_table, 8893 ARRAY_SIZE(fan_quirk_table)); 8894 8895 if (quirks & TPACPI_FAN_NOFAN) { 8896 pr_info("No integrated ThinkPad fan available\n"); 8897 return -ENODEV; 8898 } 8899 8900 if (quirks & TPACPI_FAN_NS) { 8901 pr_info("ECFW with non-standard fan reg control found\n"); 8902 fan_with_ns_addr = 1; 8903 /* Fan ctrl support from host is undefined for now */ 8904 tp_features.fan_ctrl_status_undef = 1; 8905 } 8906 8907 /* Check for the EC/BIOS with RPM reported in decimal*/ 8908 if (quirks & TPACPI_FAN_DECRPM) { 8909 pr_info("ECFW with fan RPM as decimal in EC register\n"); 8910 ecfw_with_fan_dec_rpm = 1; 8911 tp_features.fan_ctrl_status_undef = 1; 8912 } 8913 8914 if (quirks & TPACPI_FAN_NOACPI) { 8915 /* E560, T495, T495s */ 8916 pr_info("Ignoring buggy ACPI fan access method\n"); 8917 fang_handle = NULL; 8918 fanw_handle = NULL; 8919 } 8920 8921 if (gfan_handle) { 8922 /* 570, 600e/x, 770e, 770x */ 8923 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN; 8924 } else if (fang_handle) { 8925 /* E531 */ 8926 fan_status_access_mode = TPACPI_FAN_RD_ACPI_FANG; 8927 } else { 8928 /* all other ThinkPads: note that even old-style 8929 * ThinkPad ECs supports the fan control register */ 8930 if (fan_with_ns_addr || 8931 likely(acpi_ec_read(fan_status_offset, &fan_control_initial_status))) { 8932 int res; 8933 unsigned int speed; 8934 8935 fan_status_access_mode = fan_with_ns_addr ? 8936 TPACPI_FAN_RD_TPEC_NS : TPACPI_FAN_RD_TPEC; 8937 8938 if (quirks & TPACPI_FAN_Q1) 8939 fan_quirk1_setup(); 8940 if (quirks & TPACPI_FAN_TPR) 8941 fan_speed_in_tpr = true; 8942 /* Try and probe the 2nd fan */ 8943 tp_features.second_fan = 1; /* needed for get_speed to work */ 8944 res = fan2_get_speed(&speed); 8945 if (res >= 0 && speed != FAN_NOT_PRESENT) { 8946 /* It responded - so let's assume it's there */ 8947 tp_features.second_fan = 1; 8948 /* fan control not currently available for ns ECFW */ 8949 tp_features.second_fan_ctl = !fan_with_ns_addr; 8950 pr_info("secondary fan control detected & enabled\n"); 8951 } else { 8952 /* Fan not auto-detected */ 8953 tp_features.second_fan = 0; 8954 if (quirks & TPACPI_FAN_2FAN) { 8955 tp_features.second_fan = 1; 8956 pr_info("secondary fan support enabled\n"); 8957 } 8958 if (quirks & TPACPI_FAN_2CTL) { 8959 tp_features.second_fan = 1; 8960 tp_features.second_fan_ctl = 1; 8961 pr_info("secondary fan control enabled\n"); 8962 } 8963 } 8964 } else { 8965 pr_err("ThinkPad ACPI EC access misbehaving, fan status and control unavailable\n"); 8966 return -ENODEV; 8967 } 8968 } 8969 8970 if (sfan_handle) { 8971 /* 570, 770x-JL */ 8972 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN; 8973 fan_control_commands |= 8974 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE; 8975 } else if (fanw_handle) { 8976 /* E531 */ 8977 fan_control_access_mode = TPACPI_FAN_WR_ACPI_FANW; 8978 fan_control_commands |= 8979 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_SPEED | TPACPI_FAN_CMD_ENABLE; 8980 } else { 8981 if (!gfan_handle) { 8982 /* gfan without sfan means no fan control */ 8983 /* all other models implement TP EC 0x2f control */ 8984 8985 if (fans_handle) { 8986 /* X31, X40, X41 */ 8987 fan_control_access_mode = 8988 TPACPI_FAN_WR_ACPI_FANS; 8989 fan_control_commands |= 8990 TPACPI_FAN_CMD_SPEED | 8991 TPACPI_FAN_CMD_LEVEL | 8992 TPACPI_FAN_CMD_ENABLE; 8993 } else { 8994 fan_control_access_mode = TPACPI_FAN_WR_TPEC; 8995 fan_control_commands |= 8996 TPACPI_FAN_CMD_LEVEL | 8997 TPACPI_FAN_CMD_ENABLE; 8998 } 8999 } 9000 } 9001 9002 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 9003 "fan is %s, modes %d, %d\n", 9004 str_supported(fan_status_access_mode != TPACPI_FAN_NONE || 9005 fan_control_access_mode != TPACPI_FAN_WR_NONE), 9006 fan_status_access_mode, fan_control_access_mode); 9007 9008 /* fan control master switch */ 9009 if (!fan_control_allowed) { 9010 fan_control_access_mode = TPACPI_FAN_WR_NONE; 9011 fan_control_commands = 0; 9012 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 9013 "fan control features disabled by parameter\n"); 9014 } 9015 9016 /* update fan_control_desired_level */ 9017 if (fan_status_access_mode != TPACPI_FAN_NONE) 9018 fan_get_status_safe(NULL); 9019 9020 if (fan_status_access_mode == TPACPI_FAN_NONE && 9021 fan_control_access_mode == TPACPI_FAN_WR_NONE) 9022 return -ENODEV; 9023 9024 return 0; 9025} 9026 9027static void fan_exit(void) 9028{ 9029 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN, 9030 "cancelling any pending fan watchdog tasks\n"); 9031 9032 cancel_delayed_work(&fan_watchdog_task); 9033 flush_workqueue(tpacpi_wq); 9034} 9035 9036static void fan_suspend(void) 9037{ 9038 int rc; 9039 9040 if (!fan_control_allowed) 9041 return; 9042 9043 /* Store fan status in cache */ 9044 fan_control_resume_level = 0; 9045 rc = fan_get_status_safe(&fan_control_resume_level); 9046 if (rc) 9047 pr_notice("failed to read fan level for later restore during resume: %d\n", 9048 rc); 9049 9050 /* if it is undefined, don't attempt to restore it. 9051 * KEEP THIS LAST */ 9052 if (tp_features.fan_ctrl_status_undef) 9053 fan_control_resume_level = 0; 9054} 9055 9056static void fan_resume(void) 9057{ 9058 u8 current_level = 7; 9059 bool do_set = false; 9060 int rc; 9061 9062 /* DSDT *always* updates status on resume */ 9063 tp_features.fan_ctrl_status_undef = 0; 9064 9065 if (!fan_control_allowed || 9066 !fan_control_resume_level || 9067 fan_get_status_safe(¤t_level)) 9068 return; 9069 9070 switch (fan_control_access_mode) { 9071 case TPACPI_FAN_WR_ACPI_SFAN: 9072 /* never decrease fan level */ 9073 do_set = (fan_control_resume_level > current_level); 9074 break; 9075 case TPACPI_FAN_WR_ACPI_FANS: 9076 case TPACPI_FAN_WR_TPEC: 9077 /* never decrease fan level, scale is: 9078 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO 9079 * 9080 * We expect the firmware to set either 7 or AUTO, but we 9081 * handle FULLSPEED out of paranoia. 9082 * 9083 * So, we can safely only restore FULLSPEED or 7, anything 9084 * else could slow the fan. Restoring AUTO is useless, at 9085 * best that's exactly what the DSDT already set (it is the 9086 * slower it uses). 9087 * 9088 * Always keep in mind that the DSDT *will* have set the 9089 * fans to what the vendor supposes is the best level. We 9090 * muck with it only to speed the fan up. 9091 */ 9092 if (fan_control_resume_level != 7 && 9093 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED)) 9094 return; 9095 else 9096 do_set = !(current_level & TP_EC_FAN_FULLSPEED) && 9097 (current_level != fan_control_resume_level); 9098 break; 9099 default: 9100 return; 9101 } 9102 if (do_set) { 9103 pr_notice("restoring fan level to 0x%02x\n", 9104 fan_control_resume_level); 9105 rc = fan_set_level_safe(fan_control_resume_level); 9106 if (rc < 0) 9107 pr_notice("failed to restore fan level: %d\n", rc); 9108 } 9109} 9110 9111static int fan_read(struct seq_file *m) 9112{ 9113 int rc; 9114 u8 status; 9115 unsigned int speed = 0; 9116 9117 switch (fan_status_access_mode) { 9118 case TPACPI_FAN_RD_ACPI_GFAN: 9119 /* 570, 600e/x, 770e, 770x */ 9120 rc = fan_get_status_safe(&status); 9121 if (rc) 9122 return rc; 9123 9124 seq_printf(m, "status:\t\t%s\n" 9125 "level:\t\t%d\n", 9126 str_enabled_disabled(status), status); 9127 break; 9128 9129 case TPACPI_FAN_RD_TPEC_NS: 9130 case TPACPI_FAN_RD_TPEC: 9131 case TPACPI_FAN_RD_ACPI_FANG: 9132 /* all except 570, 600e/x, 770e, 770x */ 9133 rc = fan_get_status_safe(&status); 9134 if (rc) 9135 return rc; 9136 9137 seq_printf(m, "status:\t\t%s\n", str_enabled_disabled(status)); 9138 9139 rc = fan_get_speed(&speed); 9140 if (rc < 0) 9141 return rc; 9142 9143 /* Check for fan speeds displayed in hexadecimal */ 9144 if (!ecfw_with_fan_dec_rpm) 9145 seq_printf(m, "speed:\t\t%d\n", speed); 9146 else 9147 seq_printf(m, "speed:\t\t%x\n", speed); 9148 9149 if (fan_status_access_mode == TPACPI_FAN_RD_TPEC_NS) { 9150 /* 9151 * No full speed bit in NS EC 9152 * EC Auto mode is set by default. 9153 * No other levels settings available 9154 */ 9155 seq_printf(m, "level:\t\t%s\n", status & FAN_NS_CTRL ? "unknown" : "auto"); 9156 } else if (fan_status_access_mode == TPACPI_FAN_RD_TPEC) { 9157 if (status & TP_EC_FAN_FULLSPEED) 9158 /* Disengaged mode takes precedence */ 9159 seq_printf(m, "level:\t\tdisengaged\n"); 9160 else if (status & TP_EC_FAN_AUTO) 9161 seq_printf(m, "level:\t\tauto\n"); 9162 else 9163 seq_printf(m, "level:\t\t%d\n", status); 9164 } 9165 break; 9166 9167 case TPACPI_FAN_NONE: 9168 default: 9169 seq_printf(m, "status:\t\tnot supported\n"); 9170 } 9171 9172 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) { 9173 seq_printf(m, "commands:\tlevel <level>"); 9174 9175 switch (fan_control_access_mode) { 9176 case TPACPI_FAN_WR_ACPI_SFAN: 9177 seq_printf(m, " (<level> is 0-7)\n"); 9178 break; 9179 9180 default: 9181 seq_printf(m, " (<level> is 0-7, auto, disengaged, full-speed)\n"); 9182 break; 9183 } 9184 } 9185 9186 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE) 9187 seq_printf(m, "commands:\tenable, disable\n" 9188 "commands:\twatchdog <timeout> (<timeout> is 0 (off), 1-120 (seconds))\n"); 9189 9190 if (fan_control_commands & TPACPI_FAN_CMD_SPEED) 9191 seq_printf(m, "commands:\tspeed <speed> (<speed> is 0-65535)\n"); 9192 9193 return 0; 9194} 9195 9196static int fan_write_cmd_level(const char *cmd, int *rc) 9197{ 9198 int level; 9199 9200 if (strstarts(cmd, "level auto")) 9201 level = TP_EC_FAN_AUTO; 9202 else if (strstarts(cmd, "level disengaged") || strstarts(cmd, "level full-speed")) 9203 level = TP_EC_FAN_FULLSPEED; 9204 else if (sscanf(cmd, "level %d", &level) != 1) 9205 return 0; 9206 9207 *rc = fan_set_level_safe(level); 9208 if (*rc == -ENXIO) 9209 pr_err("level command accepted for unsupported access mode %d\n", 9210 fan_control_access_mode); 9211 else if (!*rc) 9212 tpacpi_disclose_usertask("procfs fan", 9213 "set level to %d\n", level); 9214 9215 return 1; 9216} 9217 9218static int fan_write_cmd_enable(const char *cmd, int *rc) 9219{ 9220 if (!strstarts(cmd, "enable")) 9221 return 0; 9222 9223 *rc = fan_set_enable(); 9224 if (*rc == -ENXIO) 9225 pr_err("enable command accepted for unsupported access mode %d\n", 9226 fan_control_access_mode); 9227 else if (!*rc) 9228 tpacpi_disclose_usertask("procfs fan", "enable\n"); 9229 9230 return 1; 9231} 9232 9233static int fan_write_cmd_disable(const char *cmd, int *rc) 9234{ 9235 if (!strstarts(cmd, "disable")) 9236 return 0; 9237 9238 *rc = fan_set_disable(); 9239 if (*rc == -ENXIO) 9240 pr_err("disable command accepted for unsupported access mode %d\n", 9241 fan_control_access_mode); 9242 else if (!*rc) 9243 tpacpi_disclose_usertask("procfs fan", "disable\n"); 9244 9245 return 1; 9246} 9247 9248static int fan_write_cmd_speed(const char *cmd, int *rc) 9249{ 9250 int speed; 9251 9252 /* TODO: 9253 * Support speed <low> <medium> <high> ? */ 9254 9255 if (sscanf(cmd, "speed %d", &speed) != 1) 9256 return 0; 9257 9258 *rc = fan_set_speed(speed); 9259 if (*rc == -ENXIO) 9260 pr_err("speed command accepted for unsupported access mode %d\n", 9261 fan_control_access_mode); 9262 else if (!*rc) 9263 tpacpi_disclose_usertask("procfs fan", 9264 "set speed to %d\n", speed); 9265 9266 return 1; 9267} 9268 9269static int fan_write_cmd_watchdog(const char *cmd, int *rc) 9270{ 9271 int interval; 9272 9273 if (sscanf(cmd, "watchdog %d", &interval) != 1) 9274 return 0; 9275 9276 if (interval < 0 || interval > 120) 9277 *rc = -EINVAL; 9278 else { 9279 fan_watchdog_maxinterval = interval; 9280 tpacpi_disclose_usertask("procfs fan", 9281 "set watchdog timer to %d\n", 9282 interval); 9283 } 9284 9285 return 1; 9286} 9287 9288static int fan_write(char *buf) 9289{ 9290 char *cmd; 9291 int rc = 0; 9292 9293 while (!rc && (cmd = strsep(&buf, ","))) { 9294 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) && 9295 fan_write_cmd_level(cmd, &rc)) && 9296 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) && 9297 (fan_write_cmd_enable(cmd, &rc) || 9298 fan_write_cmd_disable(cmd, &rc) || 9299 fan_write_cmd_watchdog(cmd, &rc))) && 9300 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) && 9301 fan_write_cmd_speed(cmd, &rc)) 9302 ) 9303 rc = -EINVAL; 9304 else if (!rc) 9305 fan_watchdog_reset(); 9306 } 9307 9308 return rc; 9309} 9310 9311static struct ibm_struct fan_driver_data = { 9312 .name = "fan", 9313 .read = fan_read, 9314 .write = fan_write, 9315 .exit = fan_exit, 9316 .suspend = fan_suspend, 9317 .resume = fan_resume, 9318}; 9319 9320/************************************************************************* 9321 * Mute LED subdriver 9322 */ 9323 9324#define TPACPI_LED_MAX 2 9325 9326struct tp_led_table { 9327 acpi_string name; 9328 int on_value; 9329 int off_value; 9330 int state; 9331}; 9332 9333static struct tp_led_table led_tables[TPACPI_LED_MAX] = { 9334 [LED_AUDIO_MUTE] = { 9335 .name = "SSMS", 9336 .on_value = 1, 9337 .off_value = 0, 9338 }, 9339 [LED_AUDIO_MICMUTE] = { 9340 .name = "MMTS", 9341 .on_value = 2, 9342 .off_value = 0, 9343 }, 9344}; 9345 9346static int mute_led_on_off(struct tp_led_table *t, bool state) 9347{ 9348 acpi_handle temp; 9349 int output; 9350 9351 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) { 9352 pr_warn("Thinkpad ACPI has no %s interface.\n", t->name); 9353 return -EIO; 9354 } 9355 9356 if (!acpi_evalf(hkey_handle, &output, t->name, "dd", 9357 state ? t->on_value : t->off_value)) 9358 return -EIO; 9359 9360 t->state = state; 9361 return state; 9362} 9363 9364static int tpacpi_led_set(int whichled, bool on) 9365{ 9366 struct tp_led_table *t; 9367 9368 t = &led_tables[whichled]; 9369 if (t->state < 0 || t->state == on) 9370 return t->state; 9371 return mute_led_on_off(t, on); 9372} 9373 9374static int tpacpi_led_mute_set(struct led_classdev *led_cdev, 9375 enum led_brightness brightness) 9376{ 9377 return tpacpi_led_set(LED_AUDIO_MUTE, brightness != LED_OFF); 9378} 9379 9380static int tpacpi_led_micmute_set(struct led_classdev *led_cdev, 9381 enum led_brightness brightness) 9382{ 9383 return tpacpi_led_set(LED_AUDIO_MICMUTE, brightness != LED_OFF); 9384} 9385 9386static struct led_classdev mute_led_cdev[TPACPI_LED_MAX] = { 9387 [LED_AUDIO_MUTE] = { 9388 .name = "platform::mute", 9389 .max_brightness = 1, 9390 .brightness_set_blocking = tpacpi_led_mute_set, 9391 .default_trigger = "audio-mute", 9392 }, 9393 [LED_AUDIO_MICMUTE] = { 9394 .name = "platform::micmute", 9395 .max_brightness = 1, 9396 .brightness_set_blocking = tpacpi_led_micmute_set, 9397 .default_trigger = "audio-micmute", 9398 }, 9399}; 9400 9401static int mute_led_init(struct ibm_init_struct *iibm) 9402{ 9403 acpi_handle temp; 9404 int i, err; 9405 9406 for (i = 0; i < TPACPI_LED_MAX; i++) { 9407 struct tp_led_table *t = &led_tables[i]; 9408 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) { 9409 t->state = -ENODEV; 9410 continue; 9411 } 9412 9413 err = led_classdev_register(&tpacpi_pdev->dev, &mute_led_cdev[i]); 9414 if (err < 0) { 9415 while (i--) 9416 led_classdev_unregister(&mute_led_cdev[i]); 9417 return err; 9418 } 9419 } 9420 return 0; 9421} 9422 9423static void mute_led_exit(void) 9424{ 9425 int i; 9426 9427 for (i = 0; i < TPACPI_LED_MAX; i++) { 9428 led_classdev_unregister(&mute_led_cdev[i]); 9429 tpacpi_led_set(i, false); 9430 } 9431} 9432 9433static void mute_led_resume(void) 9434{ 9435 int i; 9436 9437 for (i = 0; i < TPACPI_LED_MAX; i++) { 9438 struct tp_led_table *t = &led_tables[i]; 9439 if (t->state >= 0) 9440 mute_led_on_off(t, t->state); 9441 } 9442} 9443 9444static struct ibm_struct mute_led_driver_data = { 9445 .name = "mute_led", 9446 .exit = mute_led_exit, 9447 .resume = mute_led_resume, 9448}; 9449 9450/* 9451 * Battery Wear Control Driver 9452 * Contact: Ognjen Galic <smclt30p@gmail.com> 9453 */ 9454 9455/* Metadata */ 9456 9457#define GET_START "BCTG" 9458#define SET_START "BCCS" 9459#define GET_STOP "BCSG" 9460#define SET_STOP "BCSS" 9461#define GET_DISCHARGE "BDSG" 9462#define SET_DISCHARGE "BDSS" 9463#define GET_INHIBIT "BICG" 9464#define SET_INHIBIT "BICS" 9465 9466enum { 9467 BAT_ANY = 0, 9468 BAT_PRIMARY = 1, 9469 BAT_SECONDARY = 2 9470}; 9471 9472enum { 9473 /* Error condition bit */ 9474 METHOD_ERR = BIT(31), 9475}; 9476 9477enum { 9478 /* This is used in the get/set helpers */ 9479 THRESHOLD_START, 9480 THRESHOLD_STOP, 9481 FORCE_DISCHARGE, 9482 INHIBIT_CHARGE, 9483}; 9484 9485struct tpacpi_battery_data { 9486 int charge_start; 9487 int start_support; 9488 int charge_stop; 9489 int stop_support; 9490 unsigned int charge_behaviours; 9491}; 9492 9493struct tpacpi_battery_driver_data { 9494 struct tpacpi_battery_data batteries[3]; 9495 int individual_addressing; 9496}; 9497 9498static struct tpacpi_battery_driver_data battery_info; 9499 9500/* ACPI helpers/functions/probes */ 9501 9502/* 9503 * This evaluates a ACPI method call specific to the battery 9504 * ACPI extension. The specifics are that an error is marked 9505 * in the 32rd bit of the response, so we just check that here. 9506 */ 9507static acpi_status tpacpi_battery_acpi_eval(char *method, int *ret, int param) 9508{ 9509 int response; 9510 9511 if (!acpi_evalf(hkey_handle, &response, method, "dd", param)) { 9512 acpi_handle_err(hkey_handle, "%s: evaluate failed", method); 9513 return AE_ERROR; 9514 } 9515 if (response & METHOD_ERR) { 9516 acpi_handle_err(hkey_handle, 9517 "%s evaluated but flagged as error", method); 9518 return AE_ERROR; 9519 } 9520 *ret = response; 9521 return AE_OK; 9522} 9523 9524static int tpacpi_battery_get(int what, int battery, int *ret) 9525{ 9526 switch (what) { 9527 case THRESHOLD_START: 9528 if (!battery_info.batteries[battery].start_support || 9529 ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, ret, battery))) 9530 return -ENODEV; 9531 9532 /* The value is in the low 8 bits of the response */ 9533 *ret = *ret & 0xFF; 9534 return 0; 9535 case THRESHOLD_STOP: 9536 if (!battery_info.batteries[battery].stop_support || 9537 ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, ret, battery))) 9538 return -ENODEV; 9539 /* Value is in lower 8 bits */ 9540 *ret = *ret & 0xFF; 9541 /* 9542 * On the stop value, if we return 0 that 9543 * does not make any sense. 0 means Default, which 9544 * means that charging stops at 100%, so we return 9545 * that. 9546 */ 9547 if (*ret == 0) 9548 *ret = 100; 9549 return 0; 9550 case FORCE_DISCHARGE: 9551 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_DISCHARGE, ret, battery)) 9552 return -ENODEV; 9553 /* The force discharge status is in bit 0 */ 9554 *ret = *ret & 0x01; 9555 return 0; 9556 case INHIBIT_CHARGE: 9557 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_INHIBIT, ret, battery)) 9558 return -ENODEV; 9559 /* The inhibit charge status is in bit 0 */ 9560 *ret = *ret & 0x01; 9561 return 0; 9562 default: 9563 pr_crit("wrong parameter: %d", what); 9564 return -EINVAL; 9565 } 9566} 9567 9568static int tpacpi_battery_set(int what, int battery, int value) 9569{ 9570 int param, ret; 9571 /* The first 8 bits are the value of the threshold */ 9572 param = value; 9573 /* The battery ID is in bits 8-9, 2 bits */ 9574 param |= battery << 8; 9575 9576 switch (what) { 9577 case THRESHOLD_START: 9578 if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_START, &ret, param)) { 9579 pr_err("failed to set charge threshold on battery %d", 9580 battery); 9581 return -ENODEV; 9582 } 9583 return 0; 9584 case THRESHOLD_STOP: 9585 if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_STOP, &ret, param)) { 9586 pr_err("failed to set stop threshold: %d", battery); 9587 return -ENODEV; 9588 } 9589 return 0; 9590 case FORCE_DISCHARGE: 9591 /* Force discharge is in bit 0, 9592 * break on AC attach is in bit 1 (won't work on some ThinkPads), 9593 * battery ID is in bits 8-9, 2 bits. 9594 */ 9595 if (ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_DISCHARGE, &ret, param))) { 9596 pr_err("failed to set force discharge on %d", battery); 9597 return -ENODEV; 9598 } 9599 return 0; 9600 case INHIBIT_CHARGE: 9601 /* When setting inhibit charge, we set a default value of 9602 * always breaking on AC detach and the effective time is set to 9603 * be permanent. 9604 * The battery ID is in bits 4-5, 2 bits, 9605 * the effective time is in bits 8-23, 2 bytes. 9606 * A time of FFFF indicates forever. 9607 */ 9608 param = value; 9609 param |= battery << 4; 9610 param |= 0xFFFF << 8; 9611 if (ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_INHIBIT, &ret, param))) { 9612 pr_err("failed to set inhibit charge on %d", battery); 9613 return -ENODEV; 9614 } 9615 return 0; 9616 default: 9617 pr_crit("wrong parameter: %d", what); 9618 return -EINVAL; 9619 } 9620} 9621 9622static int tpacpi_battery_set_validate(int what, int battery, int value) 9623{ 9624 int ret, v; 9625 9626 ret = tpacpi_battery_set(what, battery, value); 9627 if (ret < 0) 9628 return ret; 9629 9630 ret = tpacpi_battery_get(what, battery, &v); 9631 if (ret < 0) 9632 return ret; 9633 9634 if (v == value) 9635 return 0; 9636 9637 msleep(500); 9638 9639 ret = tpacpi_battery_get(what, battery, &v); 9640 if (ret < 0) 9641 return ret; 9642 9643 if (v == value) 9644 return 0; 9645 9646 return -EIO; 9647} 9648 9649static int tpacpi_battery_probe(int battery) 9650{ 9651 int ret = 0; 9652 9653 memset(&battery_info.batteries[battery], 0, 9654 sizeof(battery_info.batteries[battery])); 9655 9656 /* 9657 * 1) Get the current start threshold 9658 * 2) Check for support 9659 * 3) Get the current stop threshold 9660 * 4) Check for support 9661 * 5) Get the current force discharge status 9662 * 6) Check for support 9663 * 7) Get the current inhibit charge status 9664 * 8) Check for support 9665 */ 9666 if (acpi_has_method(hkey_handle, GET_START)) { 9667 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, &ret, battery)) { 9668 pr_err("Error probing battery %d\n", battery); 9669 return -ENODEV; 9670 } 9671 /* Individual addressing is in bit 9 */ 9672 if (ret & BIT(9)) 9673 battery_info.individual_addressing = true; 9674 /* Support is marked in bit 8 */ 9675 if (ret & BIT(8)) 9676 battery_info.batteries[battery].start_support = 1; 9677 else 9678 return -ENODEV; 9679 if (tpacpi_battery_get(THRESHOLD_START, battery, 9680 &battery_info.batteries[battery].charge_start)) { 9681 pr_err("Error probing battery %d\n", battery); 9682 return -ENODEV; 9683 } 9684 } 9685 if (acpi_has_method(hkey_handle, GET_STOP)) { 9686 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, &ret, battery)) { 9687 pr_err("Error probing battery stop; %d\n", battery); 9688 return -ENODEV; 9689 } 9690 /* Support is marked in bit 8 */ 9691 if (ret & BIT(8)) 9692 battery_info.batteries[battery].stop_support = 1; 9693 else 9694 return -ENODEV; 9695 if (tpacpi_battery_get(THRESHOLD_STOP, battery, 9696 &battery_info.batteries[battery].charge_stop)) { 9697 pr_err("Error probing battery stop: %d\n", battery); 9698 return -ENODEV; 9699 } 9700 } 9701 if (acpi_has_method(hkey_handle, GET_DISCHARGE)) { 9702 if (ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_DISCHARGE, &ret, battery))) { 9703 pr_err("Error probing battery discharge; %d\n", battery); 9704 return -ENODEV; 9705 } 9706 /* Support is marked in bit 8 */ 9707 if (ret & BIT(8)) 9708 battery_info.batteries[battery].charge_behaviours |= 9709 BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE); 9710 } 9711 if (acpi_has_method(hkey_handle, GET_INHIBIT)) { 9712 if (ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_INHIBIT, &ret, battery))) { 9713 pr_err("Error probing battery inhibit charge; %d\n", battery); 9714 return -ENODEV; 9715 } 9716 /* Support is marked in bit 5 */ 9717 if (ret & BIT(5)) 9718 battery_info.batteries[battery].charge_behaviours |= 9719 BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE); 9720 } 9721 9722 battery_info.batteries[battery].charge_behaviours |= 9723 BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO); 9724 9725 pr_info("battery %d registered (start %d, stop %d, behaviours: 0x%x)\n", 9726 battery, 9727 battery_info.batteries[battery].charge_start, 9728 battery_info.batteries[battery].charge_stop, 9729 battery_info.batteries[battery].charge_behaviours); 9730 9731 return 0; 9732} 9733 9734/* General helper functions */ 9735 9736static int tpacpi_battery_get_id(const char *battery_name) 9737{ 9738 9739 if (strcmp(battery_name, "BAT0") == 0 || 9740 tp_features.battery_force_primary) 9741 return BAT_PRIMARY; 9742 if (strcmp(battery_name, "BAT1") == 0) 9743 return BAT_SECONDARY; 9744 /* 9745 * If for some reason the battery is not BAT0 nor is it 9746 * BAT1, we will assume it's the default, first battery, 9747 * AKA primary. 9748 */ 9749 pr_warn("unknown battery %s, assuming primary", battery_name); 9750 return BAT_PRIMARY; 9751} 9752 9753/* sysfs interface */ 9754 9755static ssize_t tpacpi_battery_store(int what, 9756 struct device *dev, 9757 const char *buf, size_t count) 9758{ 9759 struct power_supply *supply = to_power_supply(dev); 9760 unsigned long value; 9761 int battery, rval; 9762 /* 9763 * Some systems have support for more than 9764 * one battery. If that is the case, 9765 * tpacpi_battery_probe marked that addressing 9766 * them individually is supported, so we do that 9767 * based on the device struct. 9768 * 9769 * On systems that are not supported, we assume 9770 * the primary as most of the ACPI calls fail 9771 * with "Any Battery" as the parameter. 9772 */ 9773 if (battery_info.individual_addressing) 9774 /* BAT_PRIMARY or BAT_SECONDARY */ 9775 battery = tpacpi_battery_get_id(supply->desc->name); 9776 else 9777 battery = BAT_PRIMARY; 9778 9779 rval = kstrtoul(buf, 10, &value); 9780 if (rval) 9781 return rval; 9782 9783 switch (what) { 9784 case THRESHOLD_START: 9785 if (!battery_info.batteries[battery].start_support) 9786 return -ENODEV; 9787 /* valid values are [0, 99] */ 9788 if (value > 99) 9789 return -EINVAL; 9790 if (value > battery_info.batteries[battery].charge_stop) 9791 return -EINVAL; 9792 if (tpacpi_battery_set(THRESHOLD_START, battery, value)) 9793 return -ENODEV; 9794 battery_info.batteries[battery].charge_start = value; 9795 return count; 9796 9797 case THRESHOLD_STOP: 9798 if (!battery_info.batteries[battery].stop_support) 9799 return -ENODEV; 9800 /* valid values are [1, 100] */ 9801 if (value < 1 || value > 100) 9802 return -EINVAL; 9803 if (value < battery_info.batteries[battery].charge_start) 9804 return -EINVAL; 9805 battery_info.batteries[battery].charge_stop = value; 9806 /* 9807 * When 100 is passed to stop, we need to flip 9808 * it to 0 as that the EC understands that as 9809 * "Default", which will charge to 100% 9810 */ 9811 if (value == 100) 9812 value = 0; 9813 if (tpacpi_battery_set(THRESHOLD_STOP, battery, value)) 9814 return -EINVAL; 9815 return count; 9816 default: 9817 pr_crit("Wrong parameter: %d", what); 9818 return -EINVAL; 9819 } 9820 return count; 9821} 9822 9823static ssize_t tpacpi_battery_show(int what, 9824 struct device *dev, 9825 char *buf) 9826{ 9827 struct power_supply *supply = to_power_supply(dev); 9828 int ret, battery; 9829 /* 9830 * Some systems have support for more than 9831 * one battery. If that is the case, 9832 * tpacpi_battery_probe marked that addressing 9833 * them individually is supported, so we; 9834 * based on the device struct. 9835 * 9836 * On systems that are not supported, we assume 9837 * the primary as most of the ACPI calls fail 9838 * with "Any Battery" as the parameter. 9839 */ 9840 if (battery_info.individual_addressing) 9841 /* BAT_PRIMARY or BAT_SECONDARY */ 9842 battery = tpacpi_battery_get_id(supply->desc->name); 9843 else 9844 battery = BAT_PRIMARY; 9845 if (tpacpi_battery_get(what, battery, &ret)) 9846 return -ENODEV; 9847 return sysfs_emit(buf, "%d\n", ret); 9848} 9849 9850static ssize_t charge_control_start_threshold_show(struct device *device, 9851 struct device_attribute *attr, 9852 char *buf) 9853{ 9854 return tpacpi_battery_show(THRESHOLD_START, device, buf); 9855} 9856 9857static ssize_t charge_control_end_threshold_show(struct device *device, 9858 struct device_attribute *attr, 9859 char *buf) 9860{ 9861 return tpacpi_battery_show(THRESHOLD_STOP, device, buf); 9862} 9863 9864static ssize_t charge_behaviour_show(struct device *dev, 9865 struct device_attribute *attr, 9866 char *buf) 9867{ 9868 enum power_supply_charge_behaviour active = POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO; 9869 struct power_supply *supply = to_power_supply(dev); 9870 unsigned int available; 9871 int ret, battery; 9872 9873 battery = tpacpi_battery_get_id(supply->desc->name); 9874 available = battery_info.batteries[battery].charge_behaviours; 9875 9876 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE)) { 9877 if (tpacpi_battery_get(FORCE_DISCHARGE, battery, &ret)) 9878 return -ENODEV; 9879 if (ret) { 9880 active = POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE; 9881 goto out; 9882 } 9883 } 9884 9885 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE)) { 9886 if (tpacpi_battery_get(INHIBIT_CHARGE, battery, &ret)) 9887 return -ENODEV; 9888 if (ret) { 9889 active = POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE; 9890 goto out; 9891 } 9892 } 9893 9894out: 9895 return power_supply_charge_behaviour_show(dev, available, active, buf); 9896} 9897 9898static ssize_t charge_control_start_threshold_store(struct device *dev, 9899 struct device_attribute *attr, 9900 const char *buf, size_t count) 9901{ 9902 return tpacpi_battery_store(THRESHOLD_START, dev, buf, count); 9903} 9904 9905static ssize_t charge_control_end_threshold_store(struct device *dev, 9906 struct device_attribute *attr, 9907 const char *buf, size_t count) 9908{ 9909 return tpacpi_battery_store(THRESHOLD_STOP, dev, buf, count); 9910} 9911 9912static ssize_t charge_behaviour_store(struct device *dev, 9913 struct device_attribute *attr, 9914 const char *buf, size_t count) 9915{ 9916 struct power_supply *supply = to_power_supply(dev); 9917 int selected, battery, ret = 0; 9918 unsigned int available; 9919 9920 battery = tpacpi_battery_get_id(supply->desc->name); 9921 available = battery_info.batteries[battery].charge_behaviours; 9922 selected = power_supply_charge_behaviour_parse(available, buf); 9923 9924 if (selected < 0) 9925 return selected; 9926 9927 switch (selected) { 9928 case POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO: 9929 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE)) 9930 ret = tpacpi_battery_set_validate(FORCE_DISCHARGE, battery, 0); 9931 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE)) 9932 ret = min(ret, tpacpi_battery_set_validate(INHIBIT_CHARGE, battery, 0)); 9933 if (ret < 0) 9934 return ret; 9935 break; 9936 case POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE: 9937 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE)) 9938 ret = tpacpi_battery_set_validate(INHIBIT_CHARGE, battery, 0); 9939 ret = min(ret, tpacpi_battery_set_validate(FORCE_DISCHARGE, battery, 1)); 9940 if (ret < 0) 9941 return ret; 9942 break; 9943 case POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE: 9944 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE)) 9945 ret = tpacpi_battery_set_validate(FORCE_DISCHARGE, battery, 0); 9946 ret = min(ret, tpacpi_battery_set_validate(INHIBIT_CHARGE, battery, 1)); 9947 if (ret < 0) 9948 return ret; 9949 break; 9950 default: 9951 dev_err(dev, "Unexpected charge behaviour: %d\n", selected); 9952 return -EINVAL; 9953 } 9954 9955 return count; 9956} 9957 9958static DEVICE_ATTR_RW(charge_control_start_threshold); 9959static DEVICE_ATTR_RW(charge_control_end_threshold); 9960static DEVICE_ATTR_RW(charge_behaviour); 9961static struct device_attribute dev_attr_charge_start_threshold = __ATTR( 9962 charge_start_threshold, 9963 0644, 9964 charge_control_start_threshold_show, 9965 charge_control_start_threshold_store 9966); 9967static struct device_attribute dev_attr_charge_stop_threshold = __ATTR( 9968 charge_stop_threshold, 9969 0644, 9970 charge_control_end_threshold_show, 9971 charge_control_end_threshold_store 9972); 9973 9974static struct attribute *tpacpi_battery_attrs[] = { 9975 &dev_attr_charge_control_start_threshold.attr, 9976 &dev_attr_charge_control_end_threshold.attr, 9977 &dev_attr_charge_start_threshold.attr, 9978 &dev_attr_charge_stop_threshold.attr, 9979 &dev_attr_charge_behaviour.attr, 9980 NULL, 9981}; 9982 9983ATTRIBUTE_GROUPS(tpacpi_battery); 9984 9985/* ACPI battery hooking */ 9986 9987static int tpacpi_battery_add(struct power_supply *battery, struct acpi_battery_hook *hook) 9988{ 9989 int batteryid = tpacpi_battery_get_id(battery->desc->name); 9990 9991 if (tpacpi_battery_probe(batteryid)) 9992 return -ENODEV; 9993 if (device_add_groups(&battery->dev, tpacpi_battery_groups)) 9994 return -ENODEV; 9995 return 0; 9996} 9997 9998static int tpacpi_battery_remove(struct power_supply *battery, struct acpi_battery_hook *hook) 9999{ 10000 device_remove_groups(&battery->dev, tpacpi_battery_groups); 10001 return 0; 10002} 10003 10004static struct acpi_battery_hook battery_hook = { 10005 .add_battery = tpacpi_battery_add, 10006 .remove_battery = tpacpi_battery_remove, 10007 .name = "ThinkPad Battery Extension", 10008}; 10009 10010/* Subdriver init/exit */ 10011 10012static const struct tpacpi_quirk battery_quirk_table[] __initconst = { 10013 /* 10014 * Individual addressing is broken on models that expose the 10015 * primary battery as BAT1. 10016 */ 10017 TPACPI_Q_LNV('G', '8', true), /* ThinkPad X131e */ 10018 TPACPI_Q_LNV('8', 'F', true), /* Thinkpad X120e */ 10019 TPACPI_Q_LNV('J', '7', true), /* B5400 */ 10020 TPACPI_Q_LNV('J', 'I', true), /* Thinkpad 11e */ 10021 TPACPI_Q_LNV3('R', '0', 'B', true), /* Thinkpad 11e gen 3 */ 10022 TPACPI_Q_LNV3('R', '0', 'C', true), /* Thinkpad 13 */ 10023 TPACPI_Q_LNV3('R', '0', 'J', true), /* Thinkpad 13 gen 2 */ 10024 TPACPI_Q_LNV3('R', '0', 'K', true), /* Thinkpad 11e gen 4 celeron BIOS */ 10025}; 10026 10027static int __init tpacpi_battery_init(struct ibm_init_struct *ibm) 10028{ 10029 memset(&battery_info, 0, sizeof(battery_info)); 10030 10031 tp_features.battery_force_primary = tpacpi_check_quirks( 10032 battery_quirk_table, 10033 ARRAY_SIZE(battery_quirk_table)); 10034 10035 battery_hook_register(&battery_hook); 10036 return 0; 10037} 10038 10039static void tpacpi_battery_exit(void) 10040{ 10041 battery_hook_unregister(&battery_hook); 10042} 10043 10044static struct ibm_struct battery_driver_data = { 10045 .name = "battery", 10046 .exit = tpacpi_battery_exit, 10047}; 10048 10049/************************************************************************* 10050 * LCD Shadow subdriver, for the Lenovo PrivacyGuard feature 10051 */ 10052 10053static struct drm_privacy_screen *lcdshadow_dev; 10054static acpi_handle lcdshadow_get_handle; 10055static acpi_handle lcdshadow_set_handle; 10056 10057static int lcdshadow_set_sw_state(struct drm_privacy_screen *priv, 10058 enum drm_privacy_screen_status state) 10059{ 10060 int output; 10061 10062 if (WARN_ON(!mutex_is_locked(&priv->lock))) 10063 return -EIO; 10064 10065 if (!acpi_evalf(lcdshadow_set_handle, &output, NULL, "dd", (int)state)) 10066 return -EIO; 10067 10068 priv->hw_state = priv->sw_state = state; 10069 return 0; 10070} 10071 10072static void lcdshadow_get_hw_state(struct drm_privacy_screen *priv) 10073{ 10074 int output; 10075 10076 if (!acpi_evalf(lcdshadow_get_handle, &output, NULL, "dd", 0)) 10077 return; 10078 10079 priv->hw_state = priv->sw_state = output & 0x1; 10080} 10081 10082static const struct drm_privacy_screen_ops lcdshadow_ops = { 10083 .set_sw_state = lcdshadow_set_sw_state, 10084 .get_hw_state = lcdshadow_get_hw_state, 10085}; 10086 10087static int tpacpi_lcdshadow_init(struct ibm_init_struct *iibm) 10088{ 10089 acpi_status status1, status2; 10090 int output; 10091 10092 status1 = acpi_get_handle(hkey_handle, "GSSS", &lcdshadow_get_handle); 10093 status2 = acpi_get_handle(hkey_handle, "SSSS", &lcdshadow_set_handle); 10094 if (ACPI_FAILURE(status1) || ACPI_FAILURE(status2)) 10095 return 0; 10096 10097 if (!acpi_evalf(lcdshadow_get_handle, &output, NULL, "dd", 0)) 10098 return -EIO; 10099 10100 if (!(output & 0x10000)) 10101 return 0; 10102 10103 lcdshadow_dev = drm_privacy_screen_register(&tpacpi_pdev->dev, 10104 &lcdshadow_ops, NULL); 10105 if (IS_ERR(lcdshadow_dev)) 10106 return PTR_ERR(lcdshadow_dev); 10107 10108 return 0; 10109} 10110 10111static void lcdshadow_exit(void) 10112{ 10113 drm_privacy_screen_unregister(lcdshadow_dev); 10114} 10115 10116static void lcdshadow_resume(void) 10117{ 10118 if (!lcdshadow_dev) 10119 return; 10120 10121 mutex_lock(&lcdshadow_dev->lock); 10122 lcdshadow_set_sw_state(lcdshadow_dev, lcdshadow_dev->sw_state); 10123 mutex_unlock(&lcdshadow_dev->lock); 10124} 10125 10126static int lcdshadow_read(struct seq_file *m) 10127{ 10128 if (!lcdshadow_dev) { 10129 seq_puts(m, "status:\t\tnot supported\n"); 10130 } else { 10131 seq_printf(m, "status:\t\t%d\n", lcdshadow_dev->hw_state); 10132 seq_puts(m, "commands:\t0, 1\n"); 10133 } 10134 10135 return 0; 10136} 10137 10138static int lcdshadow_write(char *buf) 10139{ 10140 char *cmd; 10141 int res, state = -EINVAL; 10142 10143 if (!lcdshadow_dev) 10144 return -ENODEV; 10145 10146 while ((cmd = strsep(&buf, ","))) { 10147 res = kstrtoint(cmd, 10, &state); 10148 if (res < 0) 10149 return res; 10150 } 10151 10152 if (state >= 2 || state < 0) 10153 return -EINVAL; 10154 10155 mutex_lock(&lcdshadow_dev->lock); 10156 res = lcdshadow_set_sw_state(lcdshadow_dev, state); 10157 mutex_unlock(&lcdshadow_dev->lock); 10158 10159 drm_privacy_screen_call_notifier_chain(lcdshadow_dev); 10160 10161 return res; 10162} 10163 10164static struct ibm_struct lcdshadow_driver_data = { 10165 .name = "lcdshadow", 10166 .exit = lcdshadow_exit, 10167 .resume = lcdshadow_resume, 10168 .read = lcdshadow_read, 10169 .write = lcdshadow_write, 10170}; 10171 10172/************************************************************************* 10173 * Thinkpad sensor interfaces 10174 */ 10175 10176#define DYTC_CMD_QUERY 0 /* To get DYTC status - enable/revision */ 10177#define DYTC_QUERY_ENABLE_BIT 8 /* Bit 8 - 0 = disabled, 1 = enabled */ 10178#define DYTC_QUERY_SUBREV_BIT 16 /* Bits 16 - 27 - sub revision */ 10179#define DYTC_QUERY_REV_BIT 28 /* Bits 28 - 31 - revision */ 10180 10181#define DYTC_CMD_GET 2 /* To get current IC function and mode */ 10182#define DYTC_GET_LAPMODE_BIT 17 /* Set when in lapmode */ 10183 10184#define PALMSENSOR_PRESENT_BIT 0 /* Determine if psensor present */ 10185#define PALMSENSOR_ON_BIT 1 /* psensor status */ 10186 10187static bool has_palmsensor; 10188static bool has_lapsensor; 10189static bool palm_state; 10190static bool lap_state; 10191static int dytc_version; 10192 10193static int dytc_command(int command, int *output) 10194{ 10195 acpi_handle dytc_handle; 10196 10197 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "DYTC", &dytc_handle))) { 10198 /* Platform doesn't support DYTC */ 10199 return -ENODEV; 10200 } 10201 if (!acpi_evalf(dytc_handle, output, NULL, "dd", command)) 10202 return -EIO; 10203 return 0; 10204} 10205 10206static int lapsensor_get(bool *present, bool *state) 10207{ 10208 int output, err; 10209 10210 *present = false; 10211 err = dytc_command(DYTC_CMD_GET, &output); 10212 if (err) 10213 return err; 10214 10215 *present = true; /*If we get his far, we have lapmode support*/ 10216 *state = output & BIT(DYTC_GET_LAPMODE_BIT) ? true : false; 10217 return 0; 10218} 10219 10220static int palmsensor_get(bool *present, bool *state) 10221{ 10222 acpi_handle psensor_handle; 10223 int output; 10224 10225 *present = false; 10226 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GPSS", &psensor_handle))) 10227 return -ENODEV; 10228 if (!acpi_evalf(psensor_handle, &output, NULL, "d")) 10229 return -EIO; 10230 10231 *present = output & BIT(PALMSENSOR_PRESENT_BIT) ? true : false; 10232 *state = output & BIT(PALMSENSOR_ON_BIT) ? true : false; 10233 return 0; 10234} 10235 10236static void lapsensor_refresh(void) 10237{ 10238 bool state; 10239 int err; 10240 10241 if (has_lapsensor) { 10242 err = lapsensor_get(&has_lapsensor, &state); 10243 if (err) 10244 return; 10245 if (lap_state != state) { 10246 lap_state = state; 10247 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "dytc_lapmode"); 10248 } 10249 } 10250} 10251 10252static void palmsensor_refresh(void) 10253{ 10254 bool state; 10255 int err; 10256 10257 if (has_palmsensor) { 10258 err = palmsensor_get(&has_palmsensor, &state); 10259 if (err) 10260 return; 10261 if (palm_state != state) { 10262 palm_state = state; 10263 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "palmsensor"); 10264 } 10265 } 10266} 10267 10268static ssize_t dytc_lapmode_show(struct device *dev, 10269 struct device_attribute *attr, 10270 char *buf) 10271{ 10272 if (has_lapsensor) 10273 return sysfs_emit(buf, "%d\n", lap_state); 10274 return sysfs_emit(buf, "\n"); 10275} 10276static DEVICE_ATTR_RO(dytc_lapmode); 10277 10278static ssize_t palmsensor_show(struct device *dev, 10279 struct device_attribute *attr, 10280 char *buf) 10281{ 10282 if (has_palmsensor) 10283 return sysfs_emit(buf, "%d\n", palm_state); 10284 return sysfs_emit(buf, "\n"); 10285} 10286static DEVICE_ATTR_RO(palmsensor); 10287 10288static struct attribute *proxsensor_attributes[] = { 10289 &dev_attr_dytc_lapmode.attr, 10290 &dev_attr_palmsensor.attr, 10291 NULL 10292}; 10293 10294static umode_t proxsensor_attr_is_visible(struct kobject *kobj, 10295 struct attribute *attr, int n) 10296{ 10297 if (attr == &dev_attr_dytc_lapmode.attr) { 10298 /* 10299 * Platforms before DYTC version 5 claim to have a lap sensor, 10300 * but it doesn't work, so we ignore them. 10301 */ 10302 if (!has_lapsensor || dytc_version < 5) 10303 return 0; 10304 } else if (attr == &dev_attr_palmsensor.attr) { 10305 if (!has_palmsensor) 10306 return 0; 10307 } 10308 10309 return attr->mode; 10310} 10311 10312static const struct attribute_group proxsensor_attr_group = { 10313 .is_visible = proxsensor_attr_is_visible, 10314 .attrs = proxsensor_attributes, 10315}; 10316 10317static int tpacpi_proxsensor_init(struct ibm_init_struct *iibm) 10318{ 10319 int palm_err, lap_err; 10320 10321 palm_err = palmsensor_get(&has_palmsensor, &palm_state); 10322 lap_err = lapsensor_get(&has_lapsensor, &lap_state); 10323 /* If support isn't available for both devices return -ENODEV */ 10324 if ((palm_err == -ENODEV) && (lap_err == -ENODEV)) 10325 return -ENODEV; 10326 /* Otherwise, if there was an error return it */ 10327 if (palm_err && (palm_err != -ENODEV)) 10328 return palm_err; 10329 if (lap_err && (lap_err != -ENODEV)) 10330 return lap_err; 10331 10332 return 0; 10333} 10334 10335static struct ibm_struct proxsensor_driver_data = { 10336 .name = "proximity-sensor", 10337}; 10338 10339/************************************************************************* 10340 * DYTC Platform Profile interface 10341 */ 10342 10343#define DYTC_CMD_SET 1 /* To enable/disable IC function mode */ 10344#define DYTC_CMD_MMC_GET 8 /* To get current MMC function and mode */ 10345#define DYTC_CMD_RESET 0x1ff /* To reset back to default */ 10346 10347#define DYTC_CMD_FUNC_CAP 3 /* To get DYTC capabilities */ 10348#define DYTC_FC_MMC 27 /* MMC Mode supported */ 10349#define DYTC_FC_PSC 29 /* PSC Mode supported */ 10350#define DYTC_FC_AMT 31 /* AMT mode supported */ 10351 10352#define DYTC_GET_FUNCTION_BIT 8 /* Bits 8-11 - function setting */ 10353#define DYTC_GET_MODE_BIT 12 /* Bits 12-15 - mode setting */ 10354 10355#define DYTC_SET_FUNCTION_BIT 12 /* Bits 12-15 - function setting */ 10356#define DYTC_SET_MODE_BIT 16 /* Bits 16-19 - mode setting */ 10357#define DYTC_SET_VALID_BIT 20 /* Bit 20 - 1 = on, 0 = off */ 10358 10359#define DYTC_FUNCTION_STD 0 /* Function = 0, standard mode */ 10360#define DYTC_FUNCTION_CQL 1 /* Function = 1, lap mode */ 10361#define DYTC_FUNCTION_MMC 11 /* Function = 11, MMC mode */ 10362#define DYTC_FUNCTION_PSC 13 /* Function = 13, PSC mode */ 10363#define DYTC_FUNCTION_AMT 15 /* Function = 15, AMT mode */ 10364 10365#define DYTC_MODE_AMT_ENABLE 0x1 /* Enable AMT (in balanced mode) */ 10366#define DYTC_MODE_AMT_DISABLE 0xF /* Disable AMT (in other modes) */ 10367 10368#define DYTC_MODE_MMC_PERFORM 2 /* High power mode aka performance */ 10369#define DYTC_MODE_MMC_LOWPOWER 3 /* Low power mode */ 10370#define DYTC_MODE_MMC_BALANCE 0xF /* Default mode aka balanced */ 10371#define DYTC_MODE_MMC_DEFAULT 0 /* Default mode from MMC_GET, aka balanced */ 10372 10373#define DYTC_MODE_PSC_LOWPOWER 3 /* Low power mode */ 10374#define DYTC_MODE_PSC_BALANCE 5 /* Default mode aka balanced */ 10375#define DYTC_MODE_PSC_PERFORM 7 /* High power mode aka performance */ 10376 10377#define DYTC_MODE_PSCV9_LOWPOWER 1 /* Low power mode */ 10378#define DYTC_MODE_PSCV9_BALANCE 3 /* Default mode aka balanced */ 10379#define DYTC_MODE_PSCV9_PERFORM 4 /* High power mode aka performance */ 10380 10381#define DYTC_ERR_MASK 0xF /* Bits 0-3 in cmd result are the error result */ 10382#define DYTC_ERR_SUCCESS 1 /* CMD completed successful */ 10383 10384#define DYTC_SET_COMMAND(function, mode, on) \ 10385 (DYTC_CMD_SET | (function) << DYTC_SET_FUNCTION_BIT | \ 10386 (mode) << DYTC_SET_MODE_BIT | \ 10387 (on) << DYTC_SET_VALID_BIT) 10388 10389#define DYTC_DISABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_MMC_BALANCE, 0) 10390#define DYTC_ENABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_MMC_BALANCE, 1) 10391static int dytc_control_amt(bool enable); 10392static bool dytc_amt_active; 10393 10394static enum platform_profile_option dytc_current_profile; 10395static atomic_t dytc_ignore_event = ATOMIC_INIT(0); 10396static DEFINE_MUTEX(dytc_mutex); 10397static int dytc_capabilities; 10398static bool dytc_mmc_get_available; 10399static int profile_force; 10400 10401static int platform_psc_profile_lowpower = DYTC_MODE_PSC_LOWPOWER; 10402static int platform_psc_profile_balanced = DYTC_MODE_PSC_BALANCE; 10403static int platform_psc_profile_performance = DYTC_MODE_PSC_PERFORM; 10404 10405static int convert_dytc_to_profile(int funcmode, int dytcmode, 10406 enum platform_profile_option *profile) 10407{ 10408 switch (funcmode) { 10409 case DYTC_FUNCTION_MMC: 10410 switch (dytcmode) { 10411 case DYTC_MODE_MMC_LOWPOWER: 10412 *profile = PLATFORM_PROFILE_LOW_POWER; 10413 break; 10414 case DYTC_MODE_MMC_DEFAULT: 10415 case DYTC_MODE_MMC_BALANCE: 10416 *profile = PLATFORM_PROFILE_BALANCED; 10417 break; 10418 case DYTC_MODE_MMC_PERFORM: 10419 *profile = PLATFORM_PROFILE_PERFORMANCE; 10420 break; 10421 default: /* Unknown mode */ 10422 return -EINVAL; 10423 } 10424 return 0; 10425 case DYTC_FUNCTION_PSC: 10426 if (dytcmode == platform_psc_profile_lowpower) 10427 *profile = PLATFORM_PROFILE_LOW_POWER; 10428 else if (dytcmode == platform_psc_profile_balanced) 10429 *profile = PLATFORM_PROFILE_BALANCED; 10430 else if (dytcmode == platform_psc_profile_performance) 10431 *profile = PLATFORM_PROFILE_PERFORMANCE; 10432 else 10433 return -EINVAL; 10434 10435 return 0; 10436 case DYTC_FUNCTION_AMT: 10437 /* For now return balanced. It's the closest we have to 'auto' */ 10438 *profile = PLATFORM_PROFILE_BALANCED; 10439 return 0; 10440 default: 10441 /* Unknown function */ 10442 pr_debug("unknown function 0x%x\n", funcmode); 10443 return -EOPNOTSUPP; 10444 } 10445 return 0; 10446} 10447 10448static int convert_profile_to_dytc(enum platform_profile_option profile, int *perfmode) 10449{ 10450 switch (profile) { 10451 case PLATFORM_PROFILE_LOW_POWER: 10452 if (dytc_capabilities & BIT(DYTC_FC_MMC)) 10453 *perfmode = DYTC_MODE_MMC_LOWPOWER; 10454 else if (dytc_capabilities & BIT(DYTC_FC_PSC)) 10455 *perfmode = platform_psc_profile_lowpower; 10456 break; 10457 case PLATFORM_PROFILE_BALANCED: 10458 if (dytc_capabilities & BIT(DYTC_FC_MMC)) 10459 *perfmode = DYTC_MODE_MMC_BALANCE; 10460 else if (dytc_capabilities & BIT(DYTC_FC_PSC)) 10461 *perfmode = platform_psc_profile_balanced; 10462 break; 10463 case PLATFORM_PROFILE_PERFORMANCE: 10464 if (dytc_capabilities & BIT(DYTC_FC_MMC)) 10465 *perfmode = DYTC_MODE_MMC_PERFORM; 10466 else if (dytc_capabilities & BIT(DYTC_FC_PSC)) 10467 *perfmode = platform_psc_profile_performance; 10468 break; 10469 default: /* Unknown profile */ 10470 return -EOPNOTSUPP; 10471 } 10472 return 0; 10473} 10474 10475/* 10476 * dytc_profile_get: Function to register with platform_profile 10477 * handler. Returns current platform profile. 10478 */ 10479static int dytc_profile_get(struct device *dev, 10480 enum platform_profile_option *profile) 10481{ 10482 *profile = dytc_current_profile; 10483 return 0; 10484} 10485 10486static int dytc_control_amt(bool enable) 10487{ 10488 int dummy; 10489 int err; 10490 int cmd; 10491 10492 if (!(dytc_capabilities & BIT(DYTC_FC_AMT))) { 10493 pr_warn("Attempting to toggle AMT on a system that doesn't advertise support\n"); 10494 return -ENODEV; 10495 } 10496 10497 if (enable) 10498 cmd = DYTC_SET_COMMAND(DYTC_FUNCTION_AMT, DYTC_MODE_AMT_ENABLE, enable); 10499 else 10500 cmd = DYTC_SET_COMMAND(DYTC_FUNCTION_AMT, DYTC_MODE_AMT_DISABLE, enable); 10501 10502 pr_debug("%sabling AMT (cmd 0x%x)", enable ? "en":"dis", cmd); 10503 err = dytc_command(cmd, &dummy); 10504 if (err) 10505 return err; 10506 dytc_amt_active = enable; 10507 return 0; 10508} 10509 10510/* 10511 * Helper function - check if we are in CQL mode and if we are 10512 * - disable CQL, 10513 * - run the command 10514 * - enable CQL 10515 * If not in CQL mode, just run the command 10516 */ 10517static int dytc_cql_command(int command, int *output) 10518{ 10519 int err, cmd_err, dummy; 10520 int cur_funcmode; 10521 10522 /* Determine if we are in CQL mode. This alters the commands we do */ 10523 err = dytc_command(DYTC_CMD_GET, output); 10524 if (err) 10525 return err; 10526 10527 cur_funcmode = (*output >> DYTC_GET_FUNCTION_BIT) & 0xF; 10528 /* Check if we're OK to return immediately */ 10529 if ((command == DYTC_CMD_GET) && (cur_funcmode != DYTC_FUNCTION_CQL)) 10530 return 0; 10531 10532 if (cur_funcmode == DYTC_FUNCTION_CQL) { 10533 atomic_inc(&dytc_ignore_event); 10534 err = dytc_command(DYTC_DISABLE_CQL, &dummy); 10535 if (err) 10536 return err; 10537 } 10538 10539 cmd_err = dytc_command(command, output); 10540 /* Check return condition after we've restored CQL state */ 10541 10542 if (cur_funcmode == DYTC_FUNCTION_CQL) { 10543 err = dytc_command(DYTC_ENABLE_CQL, &dummy); 10544 if (err) 10545 return err; 10546 } 10547 return cmd_err; 10548} 10549 10550/* 10551 * dytc_profile_set: Function to register with platform_profile 10552 * handler. Sets current platform profile. 10553 */ 10554static int dytc_profile_set(struct device *dev, 10555 enum platform_profile_option profile) 10556{ 10557 int perfmode; 10558 int output; 10559 int err; 10560 10561 err = mutex_lock_interruptible(&dytc_mutex); 10562 if (err) 10563 return err; 10564 10565 err = convert_profile_to_dytc(profile, &perfmode); 10566 if (err) 10567 goto unlock; 10568 10569 if (dytc_capabilities & BIT(DYTC_FC_MMC)) { 10570 if (profile == PLATFORM_PROFILE_BALANCED) { 10571 /* 10572 * To get back to balanced mode we need to issue a reset command. 10573 * Note we still need to disable CQL mode before hand and re-enable 10574 * it afterwards, otherwise dytc_lapmode gets reset to 0 and stays 10575 * stuck at 0 for aprox. 30 minutes. 10576 */ 10577 err = dytc_cql_command(DYTC_CMD_RESET, &output); 10578 if (err) 10579 goto unlock; 10580 } else { 10581 /* Determine if we are in CQL mode. This alters the commands we do */ 10582 err = dytc_cql_command(DYTC_SET_COMMAND(DYTC_FUNCTION_MMC, perfmode, 1), 10583 &output); 10584 if (err) 10585 goto unlock; 10586 } 10587 } else if (dytc_capabilities & BIT(DYTC_FC_PSC)) { 10588 err = dytc_command(DYTC_SET_COMMAND(DYTC_FUNCTION_PSC, perfmode, 1), &output); 10589 if (err) 10590 goto unlock; 10591 10592 /* system supports AMT, activate it when on balanced */ 10593 if (dytc_capabilities & BIT(DYTC_FC_AMT)) 10594 dytc_control_amt(profile == PLATFORM_PROFILE_BALANCED); 10595 } 10596 /* Success - update current profile */ 10597 dytc_current_profile = profile; 10598unlock: 10599 mutex_unlock(&dytc_mutex); 10600 return err; 10601} 10602 10603static int dytc_profile_probe(void *drvdata, unsigned long *choices) 10604{ 10605 set_bit(PLATFORM_PROFILE_LOW_POWER, choices); 10606 set_bit(PLATFORM_PROFILE_BALANCED, choices); 10607 set_bit(PLATFORM_PROFILE_PERFORMANCE, choices); 10608 10609 return 0; 10610} 10611 10612static const struct platform_profile_ops dytc_profile_ops = { 10613 .probe = dytc_profile_probe, 10614 .profile_get = dytc_profile_get, 10615 .profile_set = dytc_profile_set, 10616}; 10617 10618static void dytc_profile_refresh(void) 10619{ 10620 enum platform_profile_option profile; 10621 int output = 0, err = 0; 10622 int perfmode, funcmode = 0; 10623 10624 mutex_lock(&dytc_mutex); 10625 if (dytc_capabilities & BIT(DYTC_FC_MMC)) { 10626 if (dytc_mmc_get_available) 10627 err = dytc_command(DYTC_CMD_MMC_GET, &output); 10628 else 10629 err = dytc_cql_command(DYTC_CMD_GET, &output); 10630 funcmode = DYTC_FUNCTION_MMC; 10631 } else if (dytc_capabilities & BIT(DYTC_FC_PSC)) { 10632 err = dytc_command(DYTC_CMD_GET, &output); 10633 /* Check if we are PSC mode, or have AMT enabled */ 10634 funcmode = (output >> DYTC_GET_FUNCTION_BIT) & 0xF; 10635 } else { /* Unknown profile mode */ 10636 err = -ENODEV; 10637 } 10638 mutex_unlock(&dytc_mutex); 10639 if (err) 10640 return; 10641 10642 perfmode = (output >> DYTC_GET_MODE_BIT) & 0xF; 10643 err = convert_dytc_to_profile(funcmode, perfmode, &profile); 10644 if (!err && profile != dytc_current_profile) { 10645 dytc_current_profile = profile; 10646 platform_profile_notify(tpacpi_pprof); 10647 } 10648} 10649 10650static int tpacpi_dytc_profile_init(struct ibm_init_struct *iibm) 10651{ 10652 int err, output; 10653 10654 err = dytc_command(DYTC_CMD_QUERY, &output); 10655 if (err) 10656 return err; 10657 10658 if (output & BIT(DYTC_QUERY_ENABLE_BIT)) 10659 dytc_version = (output >> DYTC_QUERY_REV_BIT) & 0xF; 10660 10661 dbg_printk(TPACPI_DBG_INIT, "DYTC version %d\n", dytc_version); 10662 /* Check DYTC is enabled and supports mode setting */ 10663 if (dytc_version < 5) 10664 return -ENODEV; 10665 10666 /* Check what capabilities are supported */ 10667 err = dytc_command(DYTC_CMD_FUNC_CAP, &dytc_capabilities); 10668 if (err) 10669 return err; 10670 10671 /* Check if user wants to override the profile selection */ 10672 if (profile_force) { 10673 switch (profile_force) { 10674 case -1: 10675 dytc_capabilities = 0; 10676 break; 10677 case 1: 10678 dytc_capabilities = BIT(DYTC_FC_MMC); 10679 break; 10680 case 2: 10681 dytc_capabilities = BIT(DYTC_FC_PSC); 10682 break; 10683 } 10684 pr_debug("Profile selection forced: 0x%x\n", dytc_capabilities); 10685 } 10686 if (dytc_capabilities & BIT(DYTC_FC_MMC)) { /* MMC MODE */ 10687 pr_debug("MMC is supported\n"); 10688 /* 10689 * Check if MMC_GET functionality available 10690 * Version > 6 and return success from MMC_GET command 10691 */ 10692 dytc_mmc_get_available = false; 10693 if (dytc_version >= 6) { 10694 err = dytc_command(DYTC_CMD_MMC_GET, &output); 10695 if (!err && ((output & DYTC_ERR_MASK) == DYTC_ERR_SUCCESS)) 10696 dytc_mmc_get_available = true; 10697 } 10698 } else if (dytc_capabilities & BIT(DYTC_FC_PSC)) { /* PSC MODE */ 10699 pr_debug("PSC is supported\n"); 10700 if (dytc_version >= 9) { /* update profiles for DYTC 9 and up */ 10701 platform_psc_profile_lowpower = DYTC_MODE_PSCV9_LOWPOWER; 10702 platform_psc_profile_balanced = DYTC_MODE_PSCV9_BALANCE; 10703 platform_psc_profile_performance = DYTC_MODE_PSCV9_PERFORM; 10704 } 10705 } else { 10706 dbg_printk(TPACPI_DBG_INIT, "No DYTC support available\n"); 10707 return -ENODEV; 10708 } 10709 10710 dbg_printk(TPACPI_DBG_INIT, 10711 "DYTC version %d: thermal mode available\n", dytc_version); 10712 10713 /* Create platform_profile structure and register */ 10714 tpacpi_pprof = platform_profile_register(&tpacpi_pdev->dev, "thinkpad-acpi-profile", 10715 NULL, &dytc_profile_ops); 10716 /* 10717 * If for some reason platform_profiles aren't enabled 10718 * don't quit terminally. 10719 */ 10720 if (IS_ERR(tpacpi_pprof)) 10721 return -ENODEV; 10722 10723 /* Ensure initial values are correct */ 10724 dytc_profile_refresh(); 10725 10726 /* Workaround for https://bugzilla.kernel.org/show_bug.cgi?id=216347 */ 10727 if (dytc_capabilities & BIT(DYTC_FC_PSC)) 10728 dytc_profile_set(NULL, PLATFORM_PROFILE_BALANCED); 10729 10730 return 0; 10731} 10732 10733static void dytc_profile_exit(void) 10734{ 10735 if (!IS_ERR_OR_NULL(tpacpi_pprof)) 10736 platform_profile_remove(tpacpi_pprof); 10737} 10738 10739static struct ibm_struct dytc_profile_driver_data = { 10740 .name = "dytc-profile", 10741 .exit = dytc_profile_exit, 10742}; 10743 10744/************************************************************************* 10745 * Keyboard language interface 10746 */ 10747 10748struct keyboard_lang_data { 10749 const char *lang_str; 10750 int lang_code; 10751}; 10752 10753static const struct keyboard_lang_data keyboard_lang_data[] = { 10754 {"be", 0x080c}, 10755 {"cz", 0x0405}, 10756 {"da", 0x0406}, 10757 {"de", 0x0c07}, 10758 {"en", 0x0000}, 10759 {"es", 0x2c0a}, 10760 {"et", 0x0425}, 10761 {"fr", 0x040c}, 10762 {"fr-ch", 0x100c}, 10763 {"hu", 0x040e}, 10764 {"it", 0x0410}, 10765 {"jp", 0x0411}, 10766 {"nl", 0x0413}, 10767 {"nn", 0x0414}, 10768 {"pl", 0x0415}, 10769 {"pt", 0x0816}, 10770 {"sl", 0x041b}, 10771 {"sv", 0x081d}, 10772 {"tr", 0x041f}, 10773}; 10774 10775static int set_keyboard_lang_command(int command) 10776{ 10777 acpi_handle sskl_handle; 10778 int output; 10779 10780 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "SSKL", &sskl_handle))) { 10781 /* Platform doesn't support SSKL */ 10782 return -ENODEV; 10783 } 10784 10785 if (!acpi_evalf(sskl_handle, &output, NULL, "dd", command)) 10786 return -EIO; 10787 10788 return 0; 10789} 10790 10791static int get_keyboard_lang(int *output) 10792{ 10793 acpi_handle gskl_handle; 10794 int kbd_lang; 10795 10796 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GSKL", &gskl_handle))) { 10797 /* Platform doesn't support GSKL */ 10798 return -ENODEV; 10799 } 10800 10801 if (!acpi_evalf(gskl_handle, &kbd_lang, NULL, "dd", 0x02000000)) 10802 return -EIO; 10803 10804 /* 10805 * METHOD_ERR gets returned on devices where there are no special (e.g. '=', 10806 * '(' and ')') keys which use layout dependent key-press emulation. 10807 */ 10808 if (kbd_lang & METHOD_ERR) 10809 return -ENODEV; 10810 10811 *output = kbd_lang; 10812 10813 return 0; 10814} 10815 10816/* sysfs keyboard language entry */ 10817static ssize_t keyboard_lang_show(struct device *dev, 10818 struct device_attribute *attr, 10819 char *buf) 10820{ 10821 int output, err, i, len = 0; 10822 10823 err = get_keyboard_lang(&output); 10824 if (err) 10825 return err; 10826 10827 for (i = 0; i < ARRAY_SIZE(keyboard_lang_data); i++) { 10828 if (i) 10829 len += sysfs_emit_at(buf, len, "%s", " "); 10830 10831 if (output == keyboard_lang_data[i].lang_code) { 10832 len += sysfs_emit_at(buf, len, "[%s]", keyboard_lang_data[i].lang_str); 10833 } else { 10834 len += sysfs_emit_at(buf, len, "%s", keyboard_lang_data[i].lang_str); 10835 } 10836 } 10837 len += sysfs_emit_at(buf, len, "\n"); 10838 10839 return len; 10840} 10841 10842static ssize_t keyboard_lang_store(struct device *dev, 10843 struct device_attribute *attr, 10844 const char *buf, size_t count) 10845{ 10846 int err, i; 10847 bool lang_found = false; 10848 int lang_code = 0; 10849 10850 for (i = 0; i < ARRAY_SIZE(keyboard_lang_data); i++) { 10851 if (sysfs_streq(buf, keyboard_lang_data[i].lang_str)) { 10852 lang_code = keyboard_lang_data[i].lang_code; 10853 lang_found = true; 10854 break; 10855 } 10856 } 10857 10858 if (lang_found) { 10859 lang_code = lang_code | 1 << 24; 10860 10861 /* Set language code */ 10862 err = set_keyboard_lang_command(lang_code); 10863 if (err) 10864 return err; 10865 } else { 10866 dev_err(&tpacpi_pdev->dev, "Unknown Keyboard language. Ignoring\n"); 10867 return -EINVAL; 10868 } 10869 10870 tpacpi_disclose_usertask(attr->attr.name, 10871 "keyboard language is set to %s\n", buf); 10872 10873 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "keyboard_lang"); 10874 10875 return count; 10876} 10877static DEVICE_ATTR_RW(keyboard_lang); 10878 10879static struct attribute *kbdlang_attributes[] = { 10880 &dev_attr_keyboard_lang.attr, 10881 NULL 10882}; 10883 10884static umode_t kbdlang_attr_is_visible(struct kobject *kobj, 10885 struct attribute *attr, int n) 10886{ 10887 return tp_features.kbd_lang ? attr->mode : 0; 10888} 10889 10890static const struct attribute_group kbdlang_attr_group = { 10891 .is_visible = kbdlang_attr_is_visible, 10892 .attrs = kbdlang_attributes, 10893}; 10894 10895static int tpacpi_kbdlang_init(struct ibm_init_struct *iibm) 10896{ 10897 int err, output; 10898 10899 err = get_keyboard_lang(&output); 10900 tp_features.kbd_lang = !err; 10901 return err; 10902} 10903 10904static struct ibm_struct kbdlang_driver_data = { 10905 .name = "kbdlang", 10906}; 10907 10908/************************************************************************* 10909 * DPRC(Dynamic Power Reduction Control) subdriver, for the Lenovo WWAN 10910 * and WLAN feature. 10911 */ 10912#define DPRC_GET_WWAN_ANTENNA_TYPE 0x40000 10913#define DPRC_WWAN_ANTENNA_TYPE_A_BIT BIT(4) 10914#define DPRC_WWAN_ANTENNA_TYPE_B_BIT BIT(8) 10915static bool has_antennatype; 10916static int wwan_antennatype; 10917 10918static int dprc_command(int command, int *output) 10919{ 10920 acpi_handle dprc_handle; 10921 10922 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "DPRC", &dprc_handle))) { 10923 /* Platform doesn't support DPRC */ 10924 return -ENODEV; 10925 } 10926 10927 if (!acpi_evalf(dprc_handle, output, NULL, "dd", command)) 10928 return -EIO; 10929 10930 /* 10931 * METHOD_ERR gets returned on devices where few commands are not supported 10932 * for example command to get WWAN Antenna type command is not supported on 10933 * some devices. 10934 */ 10935 if (*output & METHOD_ERR) 10936 return -ENODEV; 10937 10938 return 0; 10939} 10940 10941static int get_wwan_antenna(int *wwan_antennatype) 10942{ 10943 int output, err; 10944 10945 /* Get current Antenna type */ 10946 err = dprc_command(DPRC_GET_WWAN_ANTENNA_TYPE, &output); 10947 if (err) 10948 return err; 10949 10950 if (output & DPRC_WWAN_ANTENNA_TYPE_A_BIT) 10951 *wwan_antennatype = 1; 10952 else if (output & DPRC_WWAN_ANTENNA_TYPE_B_BIT) 10953 *wwan_antennatype = 2; 10954 else 10955 return -ENODEV; 10956 10957 return 0; 10958} 10959 10960/* sysfs wwan antenna type entry */ 10961static ssize_t wwan_antenna_type_show(struct device *dev, 10962 struct device_attribute *attr, 10963 char *buf) 10964{ 10965 switch (wwan_antennatype) { 10966 case 1: 10967 return sysfs_emit(buf, "type a\n"); 10968 case 2: 10969 return sysfs_emit(buf, "type b\n"); 10970 default: 10971 return -ENODATA; 10972 } 10973} 10974static DEVICE_ATTR_RO(wwan_antenna_type); 10975 10976static struct attribute *dprc_attributes[] = { 10977 &dev_attr_wwan_antenna_type.attr, 10978 NULL 10979}; 10980 10981static umode_t dprc_attr_is_visible(struct kobject *kobj, 10982 struct attribute *attr, int n) 10983{ 10984 return has_antennatype ? attr->mode : 0; 10985} 10986 10987static const struct attribute_group dprc_attr_group = { 10988 .is_visible = dprc_attr_is_visible, 10989 .attrs = dprc_attributes, 10990}; 10991 10992static int tpacpi_dprc_init(struct ibm_init_struct *iibm) 10993{ 10994 int err; 10995 10996 err = get_wwan_antenna(&wwan_antennatype); 10997 if (err) 10998 return err; 10999 11000 has_antennatype = true; 11001 return 0; 11002} 11003 11004static struct ibm_struct dprc_driver_data = { 11005 .name = "dprc", 11006}; 11007 11008/* 11009 * Auxmac 11010 * 11011 * This auxiliary mac address is enabled in the bios through the 11012 * MAC Address Pass-through feature. In most cases, there are three 11013 * possibilities: Internal Mac, Second Mac, and disabled. 11014 * 11015 */ 11016 11017#define AUXMAC_LEN 12 11018#define AUXMAC_START 9 11019#define AUXMAC_STRLEN 22 11020#define AUXMAC_BEGIN_MARKER 8 11021#define AUXMAC_END_MARKER 21 11022 11023static char auxmac[AUXMAC_LEN + 1]; 11024 11025static int auxmac_init(struct ibm_init_struct *iibm) 11026{ 11027 acpi_status status; 11028 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 11029 union acpi_object *obj; 11030 11031 status = acpi_evaluate_object(NULL, "\\MACA", NULL, &buffer); 11032 11033 if (ACPI_FAILURE(status)) 11034 return -ENODEV; 11035 11036 obj = buffer.pointer; 11037 11038 if (obj->type != ACPI_TYPE_STRING || obj->string.length != AUXMAC_STRLEN) { 11039 pr_info("Invalid buffer for MAC address pass-through.\n"); 11040 goto auxmacinvalid; 11041 } 11042 11043 if (obj->string.pointer[AUXMAC_BEGIN_MARKER] != '#' || 11044 obj->string.pointer[AUXMAC_END_MARKER] != '#') { 11045 pr_info("Invalid header for MAC address pass-through.\n"); 11046 goto auxmacinvalid; 11047 } 11048 11049 if (strncmp(obj->string.pointer + AUXMAC_START, "XXXXXXXXXXXX", AUXMAC_LEN) != 0) 11050 strscpy(auxmac, obj->string.pointer + AUXMAC_START, sizeof(auxmac)); 11051 else 11052 strscpy(auxmac, "disabled", sizeof(auxmac)); 11053 11054free: 11055 kfree(obj); 11056 return 0; 11057 11058auxmacinvalid: 11059 strscpy(auxmac, "unavailable", sizeof(auxmac)); 11060 goto free; 11061} 11062 11063static struct ibm_struct auxmac_data = { 11064 .name = "auxmac", 11065}; 11066 11067static DEVICE_STRING_ATTR_RO(auxmac, 0444, auxmac); 11068 11069static umode_t auxmac_attr_is_visible(struct kobject *kobj, 11070 struct attribute *attr, int n) 11071{ 11072 return auxmac[0] == 0 ? 0 : attr->mode; 11073} 11074 11075static struct attribute *auxmac_attributes[] = { 11076 &dev_attr_auxmac.attr.attr, 11077 NULL 11078}; 11079 11080static const struct attribute_group auxmac_attr_group = { 11081 .is_visible = auxmac_attr_is_visible, 11082 .attrs = auxmac_attributes, 11083}; 11084 11085/* --------------------------------------------------------------------- */ 11086 11087static struct attribute *tpacpi_driver_attributes[] = { 11088 &driver_attr_debug_level.attr, 11089 &driver_attr_version.attr, 11090 &driver_attr_interface_version.attr, 11091#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 11092 &driver_attr_wlsw_emulstate.attr, 11093 &driver_attr_bluetooth_emulstate.attr, 11094 &driver_attr_wwan_emulstate.attr, 11095 &driver_attr_uwb_emulstate.attr, 11096#endif 11097 NULL 11098}; 11099 11100#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 11101static umode_t tpacpi_attr_is_visible(struct kobject *kobj, 11102 struct attribute *attr, int n) 11103{ 11104 if (attr == &driver_attr_wlsw_emulstate.attr) { 11105 if (!dbg_wlswemul) 11106 return 0; 11107 } else if (attr == &driver_attr_bluetooth_emulstate.attr) { 11108 if (!dbg_bluetoothemul) 11109 return 0; 11110 } else if (attr == &driver_attr_wwan_emulstate.attr) { 11111 if (!dbg_wwanemul) 11112 return 0; 11113 } else if (attr == &driver_attr_uwb_emulstate.attr) { 11114 if (!dbg_uwbemul) 11115 return 0; 11116 } 11117 11118 return attr->mode; 11119} 11120#endif 11121 11122static const struct attribute_group tpacpi_driver_attr_group = { 11123#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 11124 .is_visible = tpacpi_attr_is_visible, 11125#endif 11126 .attrs = tpacpi_driver_attributes, 11127}; 11128 11129static const struct attribute_group *tpacpi_driver_groups[] = { 11130 &tpacpi_driver_attr_group, 11131 NULL, 11132}; 11133 11134static const struct attribute_group *tpacpi_groups[] = { 11135 &adaptive_kbd_attr_group, 11136 &hotkey_attr_group, 11137 &bluetooth_attr_group, 11138 &wan_attr_group, 11139 &cmos_attr_group, 11140 &proxsensor_attr_group, 11141 &kbdlang_attr_group, 11142 &dprc_attr_group, 11143 &auxmac_attr_group, 11144 NULL, 11145}; 11146 11147static const struct attribute_group *tpacpi_hwmon_groups[] = { 11148 &thermal_attr_group, 11149 &temp_label_attr_group, 11150 &fan_attr_group, 11151 NULL, 11152}; 11153 11154static const struct attribute_group *tpacpi_hwmon_driver_groups[] = { 11155 &fan_driver_attr_group, 11156 NULL, 11157}; 11158 11159/**************************************************************************** 11160 **************************************************************************** 11161 * 11162 * Platform drivers 11163 * 11164 **************************************************************************** 11165 ****************************************************************************/ 11166 11167static struct platform_driver tpacpi_pdriver = { 11168 .driver = { 11169 .name = TPACPI_DRVR_NAME, 11170 .pm = &tpacpi_pm, 11171 .groups = tpacpi_driver_groups, 11172 .dev_groups = tpacpi_groups, 11173 }, 11174 .shutdown = tpacpi_shutdown_handler, 11175}; 11176 11177static struct platform_driver tpacpi_hwmon_pdriver = { 11178 .driver = { 11179 .name = TPACPI_HWMON_DRVR_NAME, 11180 .groups = tpacpi_hwmon_driver_groups, 11181 }, 11182}; 11183 11184/**************************************************************************** 11185 **************************************************************************** 11186 * 11187 * Infrastructure 11188 * 11189 **************************************************************************** 11190 ****************************************************************************/ 11191 11192/* 11193 * HKEY event callout for other subdrivers go here 11194 * (yes, it is ugly, but it is quick, safe, and gets the job done 11195 */ 11196static bool tpacpi_driver_event(const unsigned int hkey_event) 11197{ 11198 int camera_shutter_state; 11199 11200 switch (hkey_event) { 11201 case TP_HKEY_EV_BRGHT_UP: 11202 case TP_HKEY_EV_BRGHT_DOWN: 11203 if (ibm_backlight_device) 11204 tpacpi_brightness_notify_change(); 11205 /* 11206 * Key press events are suppressed by default hotkey_user_mask 11207 * and should still be reported if explicitly requested. 11208 */ 11209 return false; 11210 case TP_HKEY_EV_VOL_UP: 11211 case TP_HKEY_EV_VOL_DOWN: 11212 case TP_HKEY_EV_VOL_MUTE: 11213 if (alsa_card) 11214 volume_alsa_notify_change(); 11215 11216 /* Key events are suppressed by default hotkey_user_mask */ 11217 return false; 11218 case TP_HKEY_EV_KBD_LIGHT: 11219 if (tp_features.kbdlight) { 11220 enum led_brightness brightness; 11221 11222 mutex_lock(&kbdlight_mutex); 11223 11224 /* 11225 * Check the brightness actually changed, setting the brightness 11226 * through kbdlight_set_level() also triggers this event. 11227 */ 11228 brightness = kbdlight_sysfs_get(NULL); 11229 if (kbdlight_brightness != brightness) { 11230 kbdlight_brightness = brightness; 11231 led_classdev_notify_brightness_hw_changed( 11232 &tpacpi_led_kbdlight.led_classdev, brightness); 11233 } 11234 11235 mutex_unlock(&kbdlight_mutex); 11236 } 11237 /* Key events are suppressed by default hotkey_user_mask */ 11238 return false; 11239 case TP_HKEY_EV_DFR_CHANGE_ROW: 11240 adaptive_keyboard_change_row(); 11241 return true; 11242 case TP_HKEY_EV_DFR_S_QUICKVIEW_ROW: 11243 adaptive_keyboard_s_quickview_row(); 11244 return true; 11245 case TP_HKEY_EV_THM_CSM_COMPLETED: 11246 lapsensor_refresh(); 11247 /* If we are already accessing DYTC then skip dytc update */ 11248 if (!atomic_add_unless(&dytc_ignore_event, -1, 0)) 11249 dytc_profile_refresh(); 11250 11251 return true; 11252 case TP_HKEY_EV_PRIVACYGUARD_TOGGLE: 11253 if (lcdshadow_dev) { 11254 enum drm_privacy_screen_status old_hw_state; 11255 bool changed; 11256 11257 mutex_lock(&lcdshadow_dev->lock); 11258 old_hw_state = lcdshadow_dev->hw_state; 11259 lcdshadow_get_hw_state(lcdshadow_dev); 11260 changed = lcdshadow_dev->hw_state != old_hw_state; 11261 mutex_unlock(&lcdshadow_dev->lock); 11262 11263 if (changed) 11264 drm_privacy_screen_call_notifier_chain(lcdshadow_dev); 11265 } 11266 return true; 11267 case TP_HKEY_EV_AMT_TOGGLE: 11268 /* If we're enabling AMT we need to force balanced mode */ 11269 if (!dytc_amt_active) 11270 /* This will also set AMT mode enabled */ 11271 dytc_profile_set(NULL, PLATFORM_PROFILE_BALANCED); 11272 else 11273 dytc_control_amt(!dytc_amt_active); 11274 11275 return true; 11276 case TP_HKEY_EV_CAMERASHUTTER_TOGGLE: 11277 camera_shutter_state = get_camera_shutter(); 11278 if (camera_shutter_state < 0) { 11279 pr_err("Error retrieving camera shutter state after shutter event\n"); 11280 return true; 11281 } 11282 mutex_lock(&tpacpi_inputdev_send_mutex); 11283 11284 input_report_switch(tpacpi_inputdev, SW_CAMERA_LENS_COVER, camera_shutter_state); 11285 input_sync(tpacpi_inputdev); 11286 11287 mutex_unlock(&tpacpi_inputdev_send_mutex); 11288 return true; 11289 case TP_HKEY_EV_DOUBLETAP_TOGGLE: 11290 tp_features.trackpoint_doubletap = !tp_features.trackpoint_doubletap; 11291 return true; 11292 case TP_HKEY_EV_PROFILE_TOGGLE: 11293 case TP_HKEY_EV_PROFILE_TOGGLE2: 11294 platform_profile_cycle(); 11295 return true; 11296 } 11297 11298 return false; 11299} 11300 11301/* --------------------------------------------------------------------- */ 11302 11303/* /proc support */ 11304static struct proc_dir_entry *proc_dir; 11305 11306/* 11307 * Module and infrastructure proble, init and exit handling 11308 */ 11309 11310static bool force_load; 11311 11312#ifdef CONFIG_THINKPAD_ACPI_DEBUG 11313static const char * __init str_supported(int is_supported) 11314{ 11315 static char text_unsupported[] __initdata = "not supported"; 11316 11317 return (is_supported) ? &text_unsupported[4] : &text_unsupported[0]; 11318} 11319#endif /* CONFIG_THINKPAD_ACPI_DEBUG */ 11320 11321static void ibm_exit(struct ibm_struct *ibm) 11322{ 11323 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name); 11324 11325 list_del_init(&ibm->all_drivers); 11326 11327 if (ibm->flags.acpi_notify_installed) { 11328 dbg_printk(TPACPI_DBG_EXIT, 11329 "%s: acpi_remove_notify_handler\n", ibm->name); 11330 BUG_ON(!ibm->acpi); 11331 acpi_remove_notify_handler(*ibm->acpi->handle, 11332 ibm->acpi->type, 11333 dispatch_acpi_notify); 11334 ibm->flags.acpi_notify_installed = 0; 11335 } 11336 11337 if (ibm->flags.proc_created) { 11338 dbg_printk(TPACPI_DBG_EXIT, 11339 "%s: remove_proc_entry\n", ibm->name); 11340 remove_proc_entry(ibm->name, proc_dir); 11341 ibm->flags.proc_created = 0; 11342 } 11343 11344 if (ibm->flags.acpi_driver_registered) { 11345 dbg_printk(TPACPI_DBG_EXIT, 11346 "%s: acpi_bus_unregister_driver\n", ibm->name); 11347 BUG_ON(!ibm->acpi); 11348 acpi_bus_unregister_driver(ibm->acpi->driver); 11349 kfree(ibm->acpi->driver); 11350 ibm->acpi->driver = NULL; 11351 ibm->flags.acpi_driver_registered = 0; 11352 } 11353 11354 if (ibm->flags.init_called && ibm->exit) { 11355 ibm->exit(); 11356 ibm->flags.init_called = 0; 11357 } 11358 11359 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name); 11360} 11361 11362static int __init ibm_init(struct ibm_init_struct *iibm) 11363{ 11364 int ret; 11365 struct ibm_struct *ibm = iibm->data; 11366 struct proc_dir_entry *entry; 11367 11368 BUG_ON(ibm == NULL); 11369 11370 INIT_LIST_HEAD(&ibm->all_drivers); 11371 11372 if (ibm->flags.experimental && !experimental) 11373 return 0; 11374 11375 dbg_printk(TPACPI_DBG_INIT, 11376 "probing for %s\n", ibm->name); 11377 11378 if (iibm->init) { 11379 ret = iibm->init(iibm); 11380 if (ret > 0 || ret == -ENODEV) 11381 return 0; /* subdriver functionality not available */ 11382 if (ret) 11383 return ret; 11384 11385 ibm->flags.init_called = 1; 11386 } 11387 11388 if (ibm->acpi) { 11389 if (ibm->acpi->hid) { 11390 ret = register_tpacpi_subdriver(ibm); 11391 if (ret) 11392 goto err_out; 11393 } 11394 11395 if (ibm->acpi->notify) { 11396 ret = setup_acpi_notify(ibm); 11397 if (ret == -ENODEV) { 11398 pr_notice("disabling subdriver %s\n", 11399 ibm->name); 11400 ret = 0; 11401 goto err_out; 11402 } 11403 if (ret < 0) 11404 goto err_out; 11405 } 11406 } 11407 11408 dbg_printk(TPACPI_DBG_INIT, 11409 "%s installed\n", ibm->name); 11410 11411 if (ibm->read) { 11412 umode_t mode = iibm->base_procfs_mode; 11413 11414 if (!mode) 11415 mode = S_IRUGO; 11416 if (ibm->write) 11417 mode |= S_IWUSR; 11418 entry = proc_create_data(ibm->name, mode, proc_dir, 11419 &dispatch_proc_ops, ibm); 11420 if (!entry) { 11421 pr_err("unable to create proc entry %s\n", ibm->name); 11422 ret = -ENODEV; 11423 goto err_out; 11424 } 11425 ibm->flags.proc_created = 1; 11426 } 11427 11428 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers); 11429 11430 return 0; 11431 11432err_out: 11433 dbg_printk(TPACPI_DBG_INIT, 11434 "%s: at error exit path with result %d\n", 11435 ibm->name, ret); 11436 11437 ibm_exit(ibm); 11438 return (ret < 0) ? ret : 0; 11439} 11440 11441/* Probing */ 11442 11443static char __init tpacpi_parse_fw_id(const char * const s, 11444 u32 *model, u16 *release) 11445{ 11446 int i; 11447 11448 if (!s || strlen(s) < 8) 11449 goto invalid; 11450 11451 for (i = 0; i < 8; i++) 11452 if (!((s[i] >= '0' && s[i] <= '9') || 11453 (s[i] >= 'A' && s[i] <= 'Z'))) 11454 goto invalid; 11455 11456 /* 11457 * Most models: xxyTkkWW (#.##c) 11458 * Ancient 570/600 and -SL lacks (#.##c) 11459 */ 11460 if (s[3] == 'T' || s[3] == 'N') { 11461 *model = TPID(s[0], s[1]); 11462 *release = TPVER(s[4], s[5]); 11463 return s[2]; 11464 11465 /* New models: xxxyTkkW (#.##c); T550 and some others */ 11466 } else if (s[4] == 'T' || s[4] == 'N') { 11467 *model = TPID3(s[0], s[1], s[2]); 11468 *release = TPVER(s[5], s[6]); 11469 return s[3]; 11470 } 11471 11472invalid: 11473 return '\0'; 11474} 11475 11476#define EC_FW_STRING_LEN 18 11477 11478static void find_new_ec_fwstr(const struct dmi_header *dm, void *private) 11479{ 11480 char *ec_fw_string = (char *) private; 11481 const char *dmi_data = (const char *)dm; 11482 /* 11483 * ThinkPad Embedded Controller Program Table on newer models 11484 * 11485 * Offset | Name | Width | Description 11486 * ---------------------------------------------------- 11487 * 0x00 | Type | BYTE | 0x8C 11488 * 0x01 | Length | BYTE | 11489 * 0x02 | Handle | WORD | Varies 11490 * 0x04 | Signature | BYTEx6 | ASCII for "LENOVO" 11491 * 0x0A | OEM struct offset | BYTE | 0x0B 11492 * 0x0B | OEM struct number | BYTE | 0x07, for this structure 11493 * 0x0C | OEM struct revision | BYTE | 0x01, for this format 11494 * 0x0D | ECP version ID | STR ID | 11495 * 0x0E | ECP release date | STR ID | 11496 */ 11497 11498 /* Return if data structure not match */ 11499 if (dm->type != 140 || dm->length < 0x0F || 11500 memcmp(dmi_data + 4, "LENOVO", 6) != 0 || 11501 dmi_data[0x0A] != 0x0B || dmi_data[0x0B] != 0x07 || 11502 dmi_data[0x0C] != 0x01) 11503 return; 11504 11505 /* fwstr is the first 8byte string */ 11506 BUILD_BUG_ON(EC_FW_STRING_LEN <= 8); 11507 memcpy(ec_fw_string, dmi_data + 0x0F, 8); 11508} 11509 11510/* returns 0 - probe ok, or < 0 - probe error. 11511 * Probe ok doesn't mean thinkpad found. 11512 * On error, kfree() cleanup on tp->* is not performed, caller must do it */ 11513static int __must_check __init get_thinkpad_model_data( 11514 struct thinkpad_id_data *tp) 11515{ 11516 const struct dmi_device *dev = NULL; 11517 char ec_fw_string[EC_FW_STRING_LEN] = {0}; 11518 char const *s; 11519 char t; 11520 11521 if (!tp) 11522 return -EINVAL; 11523 11524 memset(tp, 0, sizeof(*tp)); 11525 11526 if (dmi_name_in_vendors("IBM")) 11527 tp->vendor = PCI_VENDOR_ID_IBM; 11528 else if (dmi_name_in_vendors("LENOVO")) 11529 tp->vendor = PCI_VENDOR_ID_LENOVO; 11530 else if (dmi_name_in_vendors("NEC")) 11531 tp->vendor = PCI_VENDOR_ID_LENOVO; 11532 else 11533 return 0; 11534 11535 s = dmi_get_system_info(DMI_BIOS_VERSION); 11536 tp->bios_version_str = kstrdup(s, GFP_KERNEL); 11537 if (s && !tp->bios_version_str) 11538 return -ENOMEM; 11539 11540 /* Really ancient ThinkPad 240X will fail this, which is fine */ 11541 t = tpacpi_parse_fw_id(tp->bios_version_str, 11542 &tp->bios_model, &tp->bios_release); 11543 if (t != 'E' && t != 'C') 11544 return 0; 11545 11546 /* 11547 * ThinkPad T23 or newer, A31 or newer, R50e or newer, 11548 * X32 or newer, all Z series; Some models must have an 11549 * up-to-date BIOS or they will not be detected. 11550 * 11551 * See https://thinkwiki.org/wiki/List_of_DMI_IDs 11552 */ 11553 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) { 11554 if (sscanf(dev->name, 11555 "IBM ThinkPad Embedded Controller -[%17c", 11556 ec_fw_string) == 1) { 11557 ec_fw_string[sizeof(ec_fw_string) - 1] = 0; 11558 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0; 11559 break; 11560 } 11561 } 11562 11563 /* Newer ThinkPads have different EC program info table */ 11564 if (!ec_fw_string[0]) 11565 dmi_walk(find_new_ec_fwstr, &ec_fw_string); 11566 11567 if (ec_fw_string[0]) { 11568 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL); 11569 if (!tp->ec_version_str) 11570 return -ENOMEM; 11571 11572 t = tpacpi_parse_fw_id(ec_fw_string, 11573 &tp->ec_model, &tp->ec_release); 11574 if (t != 'H') { 11575 pr_notice("ThinkPad firmware release %s doesn't match the known patterns\n", 11576 ec_fw_string); 11577 pr_notice("please report this to %s\n", TPACPI_MAIL); 11578 } 11579 } 11580 11581 s = dmi_get_system_info(DMI_PRODUCT_VERSION); 11582 if (s && !(strncasecmp(s, "ThinkPad", 8) && strncasecmp(s, "Lenovo", 6))) { 11583 tp->model_str = kstrdup(s, GFP_KERNEL); 11584 if (!tp->model_str) 11585 return -ENOMEM; 11586 } else { 11587 s = dmi_get_system_info(DMI_BIOS_VENDOR); 11588 if (s && !(strncasecmp(s, "Lenovo", 6))) { 11589 tp->model_str = kstrdup(s, GFP_KERNEL); 11590 if (!tp->model_str) 11591 return -ENOMEM; 11592 } 11593 } 11594 11595 s = dmi_get_system_info(DMI_PRODUCT_NAME); 11596 tp->nummodel_str = kstrdup(s, GFP_KERNEL); 11597 if (s && !tp->nummodel_str) 11598 return -ENOMEM; 11599 11600 return 0; 11601} 11602 11603static int __init probe_for_thinkpad(void) 11604{ 11605 int is_thinkpad; 11606 11607 if (acpi_disabled) 11608 return -ENODEV; 11609 11610 /* It would be dangerous to run the driver in this case */ 11611 if (!tpacpi_is_ibm() && !tpacpi_is_lenovo()) 11612 return -ENODEV; 11613 11614 /* 11615 * Non-ancient models have better DMI tagging, but very old models 11616 * don't. tpacpi_is_fw_known() is a cheat to help in that case. 11617 */ 11618 is_thinkpad = (thinkpad_id.model_str != NULL) || 11619 (thinkpad_id.ec_model != 0) || 11620 tpacpi_is_fw_known(); 11621 11622 /* The EC handler is required */ 11623 tpacpi_acpi_handle_locate("ec", TPACPI_ACPI_EC_HID, &ec_handle); 11624 if (!ec_handle) { 11625 if (is_thinkpad) 11626 pr_err("Not yet supported ThinkPad detected!\n"); 11627 return -ENODEV; 11628 } 11629 11630 if (!is_thinkpad && !force_load) 11631 return -ENODEV; 11632 11633 return 0; 11634} 11635 11636static void __init thinkpad_acpi_init_banner(void) 11637{ 11638 pr_info("%s v%s\n", TPACPI_DESC, TPACPI_VERSION); 11639 pr_info("%s\n", TPACPI_URL); 11640 11641 pr_info("ThinkPad BIOS %s, EC %s\n", 11642 (thinkpad_id.bios_version_str) ? 11643 thinkpad_id.bios_version_str : "unknown", 11644 (thinkpad_id.ec_version_str) ? 11645 thinkpad_id.ec_version_str : "unknown"); 11646 11647 BUG_ON(!thinkpad_id.vendor); 11648 11649 if (thinkpad_id.model_str) 11650 pr_info("%s %s, model %s\n", 11651 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ? 11652 "IBM" : ((thinkpad_id.vendor == 11653 PCI_VENDOR_ID_LENOVO) ? 11654 "Lenovo" : "Unknown vendor"), 11655 thinkpad_id.model_str, 11656 (thinkpad_id.nummodel_str) ? 11657 thinkpad_id.nummodel_str : "unknown"); 11658} 11659 11660/* Module init, exit, parameters */ 11661 11662static struct ibm_init_struct ibms_init[] __initdata = { 11663 { 11664 .data = &thinkpad_acpi_driver_data, 11665 }, 11666 { 11667 .init = hotkey_init, 11668 .data = &hotkey_driver_data, 11669 }, 11670 { 11671 .init = bluetooth_init, 11672 .data = &bluetooth_driver_data, 11673 }, 11674 { 11675 .init = wan_init, 11676 .data = &wan_driver_data, 11677 }, 11678 { 11679 .init = uwb_init, 11680 .data = &uwb_driver_data, 11681 }, 11682#ifdef CONFIG_THINKPAD_ACPI_VIDEO 11683 { 11684 .init = video_init, 11685 .base_procfs_mode = S_IRUSR, 11686 .data = &video_driver_data, 11687 }, 11688#endif 11689 { 11690 .init = kbdlight_init, 11691 .data = &kbdlight_driver_data, 11692 }, 11693 { 11694 .init = light_init, 11695 .data = &light_driver_data, 11696 }, 11697 { 11698 .init = cmos_init, 11699 .data = &cmos_driver_data, 11700 }, 11701 { 11702 .init = led_init, 11703 .data = &led_driver_data, 11704 }, 11705 { 11706 .init = beep_init, 11707 .data = &beep_driver_data, 11708 }, 11709 { 11710 .init = thermal_init, 11711 .data = &thermal_driver_data, 11712 }, 11713 { 11714 .init = brightness_init, 11715 .data = &brightness_driver_data, 11716 }, 11717 { 11718 .init = volume_init, 11719 .data = &volume_driver_data, 11720 }, 11721 { 11722 .init = fan_init, 11723 .data = &fan_driver_data, 11724 }, 11725 { 11726 .init = mute_led_init, 11727 .data = &mute_led_driver_data, 11728 }, 11729 { 11730 .init = tpacpi_battery_init, 11731 .data = &battery_driver_data, 11732 }, 11733 { 11734 .init = tpacpi_lcdshadow_init, 11735 .data = &lcdshadow_driver_data, 11736 }, 11737 { 11738 .init = tpacpi_proxsensor_init, 11739 .data = &proxsensor_driver_data, 11740 }, 11741 { 11742 .init = tpacpi_dytc_profile_init, 11743 .data = &dytc_profile_driver_data, 11744 }, 11745 { 11746 .init = tpacpi_kbdlang_init, 11747 .data = &kbdlang_driver_data, 11748 }, 11749 { 11750 .init = tpacpi_dprc_init, 11751 .data = &dprc_driver_data, 11752 }, 11753 { 11754 .init = auxmac_init, 11755 .data = &auxmac_data, 11756 }, 11757}; 11758 11759static int __init set_ibm_param(const char *val, const struct kernel_param *kp) 11760{ 11761 unsigned int i; 11762 struct ibm_struct *ibm; 11763 11764 if (!kp || !kp->name || !val) 11765 return -EINVAL; 11766 11767 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { 11768 ibm = ibms_init[i].data; 11769 if (!ibm || !ibm->name) 11770 continue; 11771 11772 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) { 11773 if (strlen(val) > sizeof(ibms_init[i].param) - 1) 11774 return -ENOSPC; 11775 strscpy(ibms_init[i].param, val); 11776 return 0; 11777 } 11778 } 11779 11780 return -EINVAL; 11781} 11782 11783module_param(experimental, int, 0444); 11784MODULE_PARM_DESC(experimental, 11785 "Enables experimental features when non-zero"); 11786 11787module_param_named(debug, dbg_level, uint, 0); 11788MODULE_PARM_DESC(debug, "Sets debug level bit-mask"); 11789 11790module_param(force_load, bool, 0444); 11791MODULE_PARM_DESC(force_load, 11792 "Attempts to load the driver even on a mis-identified ThinkPad when true"); 11793 11794module_param_named(fan_control, fan_control_allowed, bool, 0444); 11795MODULE_PARM_DESC(fan_control, 11796 "Enables setting fan parameters features when true"); 11797 11798module_param_named(brightness_mode, brightness_mode, uint, 0444); 11799MODULE_PARM_DESC(brightness_mode, 11800 "Selects brightness control strategy: 0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM"); 11801 11802module_param(brightness_enable, uint, 0444); 11803MODULE_PARM_DESC(brightness_enable, 11804 "Enables backlight control when 1, disables when 0"); 11805 11806#ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT 11807module_param_named(volume_mode, volume_mode, uint, 0444); 11808MODULE_PARM_DESC(volume_mode, 11809 "Selects volume control strategy: 0=auto, 1=EC, 2=N/A, 3=EC+NVRAM"); 11810 11811module_param_named(volume_capabilities, volume_capabilities, uint, 0444); 11812MODULE_PARM_DESC(volume_capabilities, 11813 "Selects the mixer capabilities: 0=auto, 1=volume and mute, 2=mute only"); 11814 11815module_param_named(volume_control, volume_control_allowed, bool, 0444); 11816MODULE_PARM_DESC(volume_control, 11817 "Enables software override for the console audio control when true"); 11818 11819module_param_named(software_mute, software_mute_requested, bool, 0444); 11820MODULE_PARM_DESC(software_mute, 11821 "Request full software mute control"); 11822 11823/* ALSA module API parameters */ 11824module_param_named(index, alsa_index, int, 0444); 11825MODULE_PARM_DESC(index, "ALSA index for the ACPI EC Mixer"); 11826module_param_named(id, alsa_id, charp, 0444); 11827MODULE_PARM_DESC(id, "ALSA id for the ACPI EC Mixer"); 11828module_param_named(enable, alsa_enable, bool, 0444); 11829MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer"); 11830#endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 11831 11832/* The module parameter can't be read back, that's why 0 is used here */ 11833#define TPACPI_PARAM(feature) \ 11834 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \ 11835 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command at module load, see documentation") 11836 11837TPACPI_PARAM(hotkey); 11838TPACPI_PARAM(bluetooth); 11839TPACPI_PARAM(video); 11840TPACPI_PARAM(light); 11841TPACPI_PARAM(cmos); 11842TPACPI_PARAM(led); 11843TPACPI_PARAM(beep); 11844TPACPI_PARAM(brightness); 11845TPACPI_PARAM(volume); 11846TPACPI_PARAM(fan); 11847 11848#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 11849module_param(dbg_wlswemul, uint, 0444); 11850MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation"); 11851module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0); 11852MODULE_PARM_DESC(wlsw_state, 11853 "Initial state of the emulated WLSW switch"); 11854 11855module_param(dbg_bluetoothemul, uint, 0444); 11856MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation"); 11857module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0); 11858MODULE_PARM_DESC(bluetooth_state, 11859 "Initial state of the emulated bluetooth switch"); 11860 11861module_param(dbg_wwanemul, uint, 0444); 11862MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation"); 11863module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0); 11864MODULE_PARM_DESC(wwan_state, 11865 "Initial state of the emulated WWAN switch"); 11866 11867module_param(dbg_uwbemul, uint, 0444); 11868MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation"); 11869module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0); 11870MODULE_PARM_DESC(uwb_state, 11871 "Initial state of the emulated UWB switch"); 11872#endif 11873 11874module_param(profile_force, int, 0444); 11875MODULE_PARM_DESC(profile_force, "Force profile mode. -1=off, 1=MMC, 2=PSC"); 11876 11877static void thinkpad_acpi_module_exit(void) 11878{ 11879 tpacpi_lifecycle = TPACPI_LIFE_EXITING; 11880 11881 if (tpacpi_sensors_pdev) { 11882 platform_driver_unregister(&tpacpi_hwmon_pdriver); 11883 platform_device_unregister(tpacpi_sensors_pdev); 11884 } 11885 11886 if (tp_features.platform_drv_registered) 11887 platform_driver_unregister(&tpacpi_pdriver); 11888 if (tpacpi_pdev) 11889 platform_device_unregister(tpacpi_pdev); 11890 11891 if (proc_dir) 11892 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir); 11893 if (tpacpi_wq) 11894 destroy_workqueue(tpacpi_wq); 11895 11896 kfree(thinkpad_id.bios_version_str); 11897 kfree(thinkpad_id.ec_version_str); 11898 kfree(thinkpad_id.model_str); 11899 kfree(thinkpad_id.nummodel_str); 11900} 11901 11902static void tpacpi_subdrivers_release(void *data) 11903{ 11904 struct ibm_struct *ibm, *itmp; 11905 11906 list_for_each_entry_safe_reverse(ibm, itmp, &tpacpi_all_drivers, all_drivers) 11907 ibm_exit(ibm); 11908 11909 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n"); 11910} 11911 11912static int __init tpacpi_pdriver_probe(struct platform_device *pdev) 11913{ 11914 int ret; 11915 11916 ret = devm_mutex_init(&pdev->dev, &tpacpi_inputdev_send_mutex); 11917 if (ret) 11918 return ret; 11919 11920 tpacpi_inputdev = devm_input_allocate_device(&pdev->dev); 11921 if (!tpacpi_inputdev) 11922 return -ENOMEM; 11923 11924 tpacpi_inputdev->name = "ThinkPad Extra Buttons"; 11925 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0"; 11926 tpacpi_inputdev->id.bustype = BUS_HOST; 11927 tpacpi_inputdev->id.vendor = thinkpad_id.vendor; 11928 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT; 11929 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION; 11930 tpacpi_inputdev->dev.parent = &tpacpi_pdev->dev; 11931 11932 /* Init subdriver dependencies */ 11933 tpacpi_detect_brightness_capabilities(); 11934 11935 /* Init subdrivers */ 11936 for (unsigned int i = 0; i < ARRAY_SIZE(ibms_init); i++) { 11937 ret = ibm_init(&ibms_init[i]); 11938 if (ret >= 0 && *ibms_init[i].param) 11939 ret = ibms_init[i].data->write(ibms_init[i].param); 11940 if (ret < 0) { 11941 tpacpi_subdrivers_release(NULL); 11942 return ret; 11943 } 11944 } 11945 11946 ret = devm_add_action_or_reset(&pdev->dev, tpacpi_subdrivers_release, NULL); 11947 if (ret) 11948 return ret; 11949 11950 ret = input_register_device(tpacpi_inputdev); 11951 if (ret < 0) 11952 pr_err("unable to register input device\n"); 11953 11954 return ret; 11955} 11956 11957static int __init tpacpi_hwmon_pdriver_probe(struct platform_device *pdev) 11958{ 11959 tpacpi_hwmon = devm_hwmon_device_register_with_groups(&pdev->dev, TPACPI_NAME, 11960 NULL, tpacpi_hwmon_groups); 11961 if (IS_ERR(tpacpi_hwmon)) 11962 pr_err("unable to register hwmon device\n"); 11963 11964 return PTR_ERR_OR_ZERO(tpacpi_hwmon); 11965} 11966 11967static int __init thinkpad_acpi_module_init(void) 11968{ 11969 const struct dmi_system_id *dmi_id; 11970 int ret; 11971 acpi_object_type obj_type; 11972 11973 tpacpi_lifecycle = TPACPI_LIFE_INIT; 11974 11975 /* Driver-level probe */ 11976 11977 ret = get_thinkpad_model_data(&thinkpad_id); 11978 if (ret) { 11979 pr_err("unable to get DMI data: %d\n", ret); 11980 thinkpad_acpi_module_exit(); 11981 return ret; 11982 } 11983 ret = probe_for_thinkpad(); 11984 if (ret) { 11985 thinkpad_acpi_module_exit(); 11986 return ret; 11987 } 11988 11989 /* Driver initialization */ 11990 11991 thinkpad_acpi_init_banner(); 11992 tpacpi_check_outdated_fw(); 11993 11994 TPACPI_ACPIHANDLE_INIT(ecrd); 11995 TPACPI_ACPIHANDLE_INIT(ecwr); 11996 11997 /* 11998 * Quirk: in some models (e.g. X380 Yoga), an object named ECRD 11999 * exists, but it is a register, not a method. 12000 */ 12001 if (ecrd_handle) { 12002 acpi_get_type(ecrd_handle, &obj_type); 12003 if (obj_type != ACPI_TYPE_METHOD) 12004 ecrd_handle = NULL; 12005 } 12006 if (ecwr_handle) { 12007 acpi_get_type(ecwr_handle, &obj_type); 12008 if (obj_type != ACPI_TYPE_METHOD) 12009 ecwr_handle = NULL; 12010 } 12011 12012 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME); 12013 if (!tpacpi_wq) { 12014 thinkpad_acpi_module_exit(); 12015 return -ENOMEM; 12016 } 12017 12018 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir); 12019 if (!proc_dir) { 12020 pr_err("unable to create proc dir " TPACPI_PROC_DIR "\n"); 12021 thinkpad_acpi_module_exit(); 12022 return -ENODEV; 12023 } 12024 12025 dmi_id = dmi_first_match(fwbug_list); 12026 if (dmi_id) 12027 tp_features.quirks = dmi_id->driver_data; 12028 12029 /* Device initialization */ 12030 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, PLATFORM_DEVID_NONE, 12031 NULL, 0); 12032 if (IS_ERR(tpacpi_pdev)) { 12033 ret = PTR_ERR(tpacpi_pdev); 12034 tpacpi_pdev = NULL; 12035 pr_err("unable to register platform device\n"); 12036 thinkpad_acpi_module_exit(); 12037 return ret; 12038 } 12039 12040 ret = platform_driver_probe(&tpacpi_pdriver, tpacpi_pdriver_probe); 12041 if (ret) { 12042 pr_err("unable to register main platform driver\n"); 12043 thinkpad_acpi_module_exit(); 12044 return ret; 12045 } 12046 tp_features.platform_drv_registered = 1; 12047 12048 tpacpi_sensors_pdev = platform_create_bundle(&tpacpi_hwmon_pdriver, 12049 tpacpi_hwmon_pdriver_probe, 12050 NULL, 0, NULL, 0); 12051 if (IS_ERR(tpacpi_sensors_pdev)) { 12052 ret = PTR_ERR(tpacpi_sensors_pdev); 12053 tpacpi_sensors_pdev = NULL; 12054 pr_err("unable to register hwmon platform device/driver bundle\n"); 12055 thinkpad_acpi_module_exit(); 12056 return ret; 12057 } 12058 12059 tpacpi_lifecycle = TPACPI_LIFE_RUNNING; 12060 12061 return 0; 12062} 12063 12064MODULE_ALIAS(TPACPI_DRVR_SHORTNAME); 12065 12066/* 12067 * This will autoload the driver in almost every ThinkPad 12068 * in widespread use. 12069 * 12070 * Only _VERY_ old models, like the 240, 240x and 570 lack 12071 * the HKEY event interface. 12072 */ 12073MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids); 12074 12075/* 12076 * DMI matching for module autoloading 12077 * 12078 * See https://thinkwiki.org/wiki/List_of_DMI_IDs 12079 * See https://thinkwiki.org/wiki/BIOS_Upgrade_Downloads 12080 * 12081 * Only models listed in thinkwiki will be supported, so add yours 12082 * if it is not there yet. 12083 */ 12084#define IBM_BIOS_MODULE_ALIAS(__type) \ 12085 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*") 12086 12087/* Ancient thinkpad BIOSes have to be identified by 12088 * BIOS type or model number, and there are far less 12089 * BIOS types than model numbers... */ 12090IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */ 12091 12092MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>"); 12093MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>"); 12094MODULE_DESCRIPTION(TPACPI_DESC); 12095MODULE_VERSION(TPACPI_VERSION); 12096MODULE_LICENSE("GPL"); 12097 12098module_init(thinkpad_acpi_module_init); 12099module_exit(thinkpad_acpi_module_exit);
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