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adt7475.c
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linux-6.19.14/drivers/hwmon/adt7475.c
1// SPDX-License-Identifier: GPL-2.0-only 2/* 3 * adt7475 - Thermal sensor driver for the ADT7475 chip and derivatives 4 * Copyright (C) 2007-2008, Advanced Micro Devices, Inc. 5 * Copyright (C) 2008 Jordan Crouse <jordan@cosmicpenguin.net> 6 * Copyright (C) 2008 Hans de Goede <hdegoede@redhat.com> 7 * Copyright (C) 2009 Jean Delvare <jdelvare@suse.de> 8 * 9 * Derived from the lm83 driver by Jean Delvare 10 */ 11 12#include <linux/module.h> 13#include <linux/init.h> 14#include <linux/slab.h> 15#include <linux/i2c.h> 16#include <linux/hwmon.h> 17#include <linux/hwmon-sysfs.h> 18#include <linux/hwmon-vid.h> 19#include <linux/err.h> 20#include <linux/jiffies.h> 21#include <linux/of.h> 22#include <linux/util_macros.h> 23 24#include <dt-bindings/pwm/pwm.h> 25 26/* Indexes for the sysfs hooks */ 27enum adt_sysfs_id { 28 INPUT = 0, 29 MIN = 1, 30 MAX = 2, 31 CONTROL = 3, 32 OFFSET = 3, // Dup 33 AUTOMIN = 4, 34 THERM = 5, 35 HYSTERSIS = 6, 36/* 37 * These are unique identifiers for the sysfs functions - unlike the 38 * numbers above, these are not also indexes into an array 39 */ 40 ALARM = 9, 41 FAULT = 10, 42}; 43 44 45/* 7475 Common Registers */ 46 47#define REG_DEVREV2 0x12 /* ADT7490 only */ 48#define REG_IMON 0x1D /* ADT7490 only */ 49 50#define REG_VTT 0x1E /* ADT7490 only */ 51#define REG_EXTEND3 0x1F /* ADT7490 only */ 52 53#define REG_VOLTAGE_BASE 0x20 54#define REG_TEMP_BASE 0x25 55#define REG_TACH_BASE 0x28 56#define REG_PWM_BASE 0x30 57#define REG_PWM_MAX_BASE 0x38 58 59#define REG_DEVID 0x3D 60#define REG_VENDID 0x3E 61#define REG_DEVID2 0x3F 62 63#define REG_CONFIG1 0x40 64 65#define REG_STATUS1 0x41 66#define REG_STATUS2 0x42 67 68#define REG_VID 0x43 /* ADT7476 only */ 69 70#define REG_VOLTAGE_MIN_BASE 0x44 71#define REG_VOLTAGE_MAX_BASE 0x45 72 73#define REG_TEMP_MIN_BASE 0x4E 74#define REG_TEMP_MAX_BASE 0x4F 75 76#define REG_TACH_MIN_BASE 0x54 77 78#define REG_PWM_CONFIG_BASE 0x5C 79 80#define REG_TEMP_TRANGE_BASE 0x5F 81 82#define REG_ENHANCE_ACOUSTICS1 0x62 83#define REG_ENHANCE_ACOUSTICS2 0x63 84 85#define REG_PWM_MIN_BASE 0x64 86 87#define REG_TEMP_TMIN_BASE 0x67 88#define REG_TEMP_THERM_BASE 0x6A 89 90#define REG_REMOTE1_HYSTERSIS 0x6D 91#define REG_REMOTE2_HYSTERSIS 0x6E 92 93#define REG_TEMP_OFFSET_BASE 0x70 94 95#define REG_CONFIG2 0x73 96 97#define REG_EXTEND1 0x76 98#define REG_EXTEND2 0x77 99 100#define REG_CONFIG3 0x78 101#define REG_CONFIG5 0x7C 102#define REG_CONFIG4 0x7D 103 104#define REG_STATUS4 0x81 /* ADT7490 only */ 105 106#define REG_VTT_MIN 0x84 /* ADT7490 only */ 107#define REG_VTT_MAX 0x86 /* ADT7490 only */ 108 109#define REG_IMON_MIN 0x85 /* ADT7490 only */ 110#define REG_IMON_MAX 0x87 /* ADT7490 only */ 111 112#define VID_VIDSEL 0x80 /* ADT7476 only */ 113 114#define CONFIG2_ATTN 0x20 115 116#define CONFIG3_SMBALERT 0x01 117#define CONFIG3_THERM 0x02 118 119#define CONFIG4_PINFUNC 0x03 120#define CONFIG4_THERM 0x01 121#define CONFIG4_SMBALERT 0x02 122#define CONFIG4_MAXDUTY 0x08 123#define CONFIG4_ATTN_IN10 0x30 124#define CONFIG4_ATTN_IN43 0xC0 125 126#define CONFIG5_TWOSCOMP 0x01 127#define CONFIG5_TEMPOFFSET 0x02 128#define CONFIG5_VIDGPIO 0x10 /* ADT7476 only */ 129 130/* ADT7475 Settings */ 131 132#define ADT7475_VOLTAGE_COUNT 5 /* Not counting Vtt or Imon */ 133#define ADT7475_TEMP_COUNT 3 134#define ADT7475_TACH_COUNT 4 135#define ADT7475_PWM_COUNT 3 136 137/* Macro to read the registers */ 138 139#define adt7475_read(reg) i2c_smbus_read_byte_data(client, (reg)) 140 141/* Macros to easily index the registers */ 142 143#define TACH_REG(idx) (REG_TACH_BASE + ((idx) * 2)) 144#define TACH_MIN_REG(idx) (REG_TACH_MIN_BASE + ((idx) * 2)) 145 146#define PWM_REG(idx) (REG_PWM_BASE + (idx)) 147#define PWM_MAX_REG(idx) (REG_PWM_MAX_BASE + (idx)) 148#define PWM_MIN_REG(idx) (REG_PWM_MIN_BASE + (idx)) 149#define PWM_CONFIG_REG(idx) (REG_PWM_CONFIG_BASE + (idx)) 150 151#define VOLTAGE_REG(idx) (REG_VOLTAGE_BASE + (idx)) 152#define VOLTAGE_MIN_REG(idx) (REG_VOLTAGE_MIN_BASE + ((idx) * 2)) 153#define VOLTAGE_MAX_REG(idx) (REG_VOLTAGE_MAX_BASE + ((idx) * 2)) 154 155#define TEMP_REG(idx) (REG_TEMP_BASE + (idx)) 156#define TEMP_MIN_REG(idx) (REG_TEMP_MIN_BASE + ((idx) * 2)) 157#define TEMP_MAX_REG(idx) (REG_TEMP_MAX_BASE + ((idx) * 2)) 158#define TEMP_TMIN_REG(idx) (REG_TEMP_TMIN_BASE + (idx)) 159#define TEMP_THERM_REG(idx) (REG_TEMP_THERM_BASE + (idx)) 160#define TEMP_OFFSET_REG(idx) (REG_TEMP_OFFSET_BASE + (idx)) 161#define TEMP_TRANGE_REG(idx) (REG_TEMP_TRANGE_BASE + (idx)) 162 163static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END }; 164 165enum chips { adt7473, adt7475, adt7476, adt7490 }; 166 167static const struct i2c_device_id adt7475_id[] = { 168 { "adt7473", adt7473 }, 169 { "adt7475", adt7475 }, 170 { "adt7476", adt7476 }, 171 { "adt7490", adt7490 }, 172 { } 173}; 174MODULE_DEVICE_TABLE(i2c, adt7475_id); 175 176static const struct of_device_id __maybe_unused adt7475_of_match[] = { 177 { 178 .compatible = "adi,adt7473", 179 .data = (void *)adt7473 180 }, 181 { 182 .compatible = "adi,adt7475", 183 .data = (void *)adt7475 184 }, 185 { 186 .compatible = "adi,adt7476", 187 .data = (void *)adt7476 188 }, 189 { 190 .compatible = "adi,adt7490", 191 .data = (void *)adt7490 192 }, 193 { }, 194}; 195MODULE_DEVICE_TABLE(of, adt7475_of_match); 196 197struct adt7475_data { 198 struct i2c_client *client; 199 struct mutex lock; 200 201 unsigned long measure_updated; 202 bool valid; 203 204 u8 config2; 205 u8 config4; 206 u8 config5; 207 u8 has_voltage; 208 u8 bypass_attn; /* Bypass voltage attenuator */ 209 u8 has_pwm2:1; 210 u8 has_fan4:1; 211 u8 has_vid:1; 212 u32 alarms; 213 u16 voltage[3][7]; 214 u16 temp[7][3]; 215 u16 tach[2][4]; 216 u8 pwm[4][3]; 217 u8 range[3]; 218 u8 pwmctl[3]; 219 u8 pwmchan[3]; 220 u8 enh_acoustics[2]; 221 222 u8 vid; 223 u8 vrm; 224 const struct attribute_group *groups[10]; 225}; 226 227static struct i2c_driver adt7475_driver; 228static struct adt7475_data *adt7475_update_device(struct device *dev); 229static void adt7475_read_hystersis(struct i2c_client *client); 230static void adt7475_read_pwm(struct i2c_client *client, int index); 231 232/* Given a temp value, convert it to register value */ 233 234static inline u16 temp2reg(struct adt7475_data *data, long val) 235{ 236 u16 ret; 237 238 if (!(data->config5 & CONFIG5_TWOSCOMP)) { 239 val = clamp_val(val, -64000, 191000); 240 ret = (val + 64500) / 1000; 241 } else { 242 val = clamp_val(val, -128000, 127000); 243 if (val < -500) 244 ret = (256500 + val) / 1000; 245 else 246 ret = (val + 500) / 1000; 247 } 248 249 return ret << 2; 250} 251 252/* Given a register value, convert it to a real temp value */ 253 254static inline int reg2temp(struct adt7475_data *data, u16 reg) 255{ 256 if (data->config5 & CONFIG5_TWOSCOMP) { 257 if (reg >= 512) 258 return (reg - 1024) * 250; 259 else 260 return reg * 250; 261 } else 262 return (reg - 256) * 250; 263} 264 265static inline int tach2rpm(u16 tach) 266{ 267 if (tach == 0 || tach == 0xFFFF) 268 return 0; 269 270 return (90000 * 60) / tach; 271} 272 273static inline u16 rpm2tach(unsigned long rpm) 274{ 275 if (rpm == 0) 276 return 0; 277 278 return clamp_val((90000 * 60) / rpm, 1, 0xFFFF); 279} 280 281/* Scaling factors for voltage inputs, taken from the ADT7490 datasheet */ 282static const int adt7473_in_scaling[ADT7475_VOLTAGE_COUNT + 2][2] = { 283 { 45, 94 }, /* +2.5V */ 284 { 175, 525 }, /* Vccp */ 285 { 68, 71 }, /* Vcc */ 286 { 93, 47 }, /* +5V */ 287 { 120, 20 }, /* +12V */ 288 { 45, 45 }, /* Vtt */ 289 { 45, 45 }, /* Imon */ 290}; 291 292static inline int reg2volt(int channel, u16 reg, u8 bypass_attn) 293{ 294 const int *r = adt7473_in_scaling[channel]; 295 296 if (bypass_attn & (1 << channel)) 297 return DIV_ROUND_CLOSEST(reg * 2250, 1024); 298 return DIV_ROUND_CLOSEST(reg * (r[0] + r[1]) * 2250, r[1] * 1024); 299} 300 301static inline u16 volt2reg(int channel, long volt, u8 bypass_attn) 302{ 303 const int *r = adt7473_in_scaling[channel]; 304 long reg; 305 306 if (bypass_attn & (1 << channel)) 307 reg = DIV_ROUND_CLOSEST(volt * 1024, 2250); 308 else 309 reg = DIV_ROUND_CLOSEST(volt * r[1] * 1024, 310 (r[0] + r[1]) * 2250); 311 return clamp_val(reg, 0, 1023) & (0xff << 2); 312} 313 314static int adt7475_read_word(struct i2c_client *client, int reg) 315{ 316 int val1, val2; 317 318 val1 = i2c_smbus_read_byte_data(client, reg); 319 if (val1 < 0) 320 return val1; 321 val2 = i2c_smbus_read_byte_data(client, reg + 1); 322 if (val2 < 0) 323 return val2; 324 325 return val1 | (val2 << 8); 326} 327 328static void adt7475_write_word(struct i2c_client *client, int reg, u16 val) 329{ 330 i2c_smbus_write_byte_data(client, reg + 1, val >> 8); 331 i2c_smbus_write_byte_data(client, reg, val & 0xFF); 332} 333 334static ssize_t voltage_show(struct device *dev, struct device_attribute *attr, 335 char *buf) 336{ 337 struct adt7475_data *data = adt7475_update_device(dev); 338 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 339 unsigned short val; 340 341 if (IS_ERR(data)) 342 return PTR_ERR(data); 343 344 switch (sattr->nr) { 345 case ALARM: 346 return sprintf(buf, "%d\n", 347 (data->alarms >> sattr->index) & 1); 348 default: 349 val = data->voltage[sattr->nr][sattr->index]; 350 return sprintf(buf, "%d\n", 351 reg2volt(sattr->index, val, data->bypass_attn)); 352 } 353} 354 355static ssize_t voltage_store(struct device *dev, 356 struct device_attribute *attr, const char *buf, 357 size_t count) 358{ 359 360 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 361 struct adt7475_data *data = dev_get_drvdata(dev); 362 struct i2c_client *client = data->client; 363 unsigned char reg; 364 long val; 365 366 if (kstrtol(buf, 10, &val)) 367 return -EINVAL; 368 369 mutex_lock(&data->lock); 370 371 data->voltage[sattr->nr][sattr->index] = 372 volt2reg(sattr->index, val, data->bypass_attn); 373 374 if (sattr->index < ADT7475_VOLTAGE_COUNT) { 375 if (sattr->nr == MIN) 376 reg = VOLTAGE_MIN_REG(sattr->index); 377 else 378 reg = VOLTAGE_MAX_REG(sattr->index); 379 } else if (sattr->index == 5) { 380 if (sattr->nr == MIN) 381 reg = REG_VTT_MIN; 382 else 383 reg = REG_VTT_MAX; 384 } else { 385 if (sattr->nr == MIN) 386 reg = REG_IMON_MIN; 387 else 388 reg = REG_IMON_MAX; 389 } 390 391 i2c_smbus_write_byte_data(client, reg, 392 data->voltage[sattr->nr][sattr->index] >> 2); 393 mutex_unlock(&data->lock); 394 395 return count; 396} 397 398static ssize_t temp_show(struct device *dev, struct device_attribute *attr, 399 char *buf) 400{ 401 struct adt7475_data *data = adt7475_update_device(dev); 402 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 403 int out; 404 405 if (IS_ERR(data)) 406 return PTR_ERR(data); 407 408 switch (sattr->nr) { 409 case HYSTERSIS: 410 mutex_lock(&data->lock); 411 out = data->temp[sattr->nr][sattr->index]; 412 if (sattr->index != 1) 413 out = (out >> 4) & 0xF; 414 else 415 out = (out & 0xF); 416 /* 417 * Show the value as an absolute number tied to 418 * THERM 419 */ 420 out = reg2temp(data, data->temp[THERM][sattr->index]) - 421 out * 1000; 422 mutex_unlock(&data->lock); 423 break; 424 425 case OFFSET: 426 /* 427 * Offset is always 2's complement, regardless of the 428 * setting in CONFIG5 429 */ 430 mutex_lock(&data->lock); 431 out = (s8)data->temp[sattr->nr][sattr->index]; 432 if (data->config5 & CONFIG5_TEMPOFFSET) 433 out *= 1000; 434 else 435 out *= 500; 436 mutex_unlock(&data->lock); 437 break; 438 439 case ALARM: 440 out = (data->alarms >> (sattr->index + 4)) & 1; 441 break; 442 443 case FAULT: 444 /* Note - only for remote1 and remote2 */ 445 out = !!(data->alarms & (sattr->index ? 0x8000 : 0x4000)); 446 break; 447 448 default: 449 /* All other temp values are in the configured format */ 450 out = reg2temp(data, data->temp[sattr->nr][sattr->index]); 451 } 452 453 return sprintf(buf, "%d\n", out); 454} 455 456static ssize_t temp_store(struct device *dev, struct device_attribute *attr, 457 const char *buf, size_t count) 458{ 459 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 460 struct adt7475_data *data = dev_get_drvdata(dev); 461 struct i2c_client *client = data->client; 462 unsigned char reg = 0; 463 u8 out; 464 int temp; 465 long val; 466 467 if (kstrtol(buf, 10, &val)) 468 return -EINVAL; 469 470 mutex_lock(&data->lock); 471 472 /* We need the config register in all cases for temp <-> reg conv. */ 473 data->config5 = adt7475_read(REG_CONFIG5); 474 475 switch (sattr->nr) { 476 case OFFSET: 477 if (data->config5 & CONFIG5_TEMPOFFSET) { 478 val = clamp_val(val, -63000, 127000); 479 out = data->temp[OFFSET][sattr->index] = val / 1000; 480 } else { 481 val = clamp_val(val, -63000, 64000); 482 out = data->temp[OFFSET][sattr->index] = val / 500; 483 } 484 break; 485 486 case HYSTERSIS: 487 /* 488 * The value will be given as an absolute value, turn it 489 * into an offset based on THERM 490 */ 491 492 /* Read fresh THERM and HYSTERSIS values from the chip */ 493 data->temp[THERM][sattr->index] = 494 adt7475_read(TEMP_THERM_REG(sattr->index)) << 2; 495 adt7475_read_hystersis(client); 496 497 temp = reg2temp(data, data->temp[THERM][sattr->index]); 498 val = clamp_val(val, temp - 15000, temp); 499 val = (temp - val) / 1000; 500 501 if (sattr->index != 1) { 502 data->temp[HYSTERSIS][sattr->index] &= 0x0F; 503 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF) << 4; 504 } else { 505 data->temp[HYSTERSIS][sattr->index] &= 0xF0; 506 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF); 507 } 508 509 out = data->temp[HYSTERSIS][sattr->index]; 510 break; 511 512 default: 513 data->temp[sattr->nr][sattr->index] = temp2reg(data, val); 514 515 /* 516 * We maintain an extra 2 digits of precision for simplicity 517 * - shift those back off before writing the value 518 */ 519 out = (u8) (data->temp[sattr->nr][sattr->index] >> 2); 520 } 521 522 switch (sattr->nr) { 523 case MIN: 524 reg = TEMP_MIN_REG(sattr->index); 525 break; 526 case MAX: 527 reg = TEMP_MAX_REG(sattr->index); 528 break; 529 case OFFSET: 530 reg = TEMP_OFFSET_REG(sattr->index); 531 break; 532 case AUTOMIN: 533 reg = TEMP_TMIN_REG(sattr->index); 534 break; 535 case THERM: 536 reg = TEMP_THERM_REG(sattr->index); 537 break; 538 case HYSTERSIS: 539 if (sattr->index != 2) 540 reg = REG_REMOTE1_HYSTERSIS; 541 else 542 reg = REG_REMOTE2_HYSTERSIS; 543 544 break; 545 } 546 547 i2c_smbus_write_byte_data(client, reg, out); 548 549 mutex_unlock(&data->lock); 550 return count; 551} 552 553/* Assuming CONFIG6[SLOW] is 0 */ 554static const int ad7475_st_map[] = { 555 37500, 18800, 12500, 7500, 4700, 3100, 1600, 800, 556}; 557 558static ssize_t temp_st_show(struct device *dev, struct device_attribute *attr, 559 char *buf) 560{ 561 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 562 struct adt7475_data *data = dev_get_drvdata(dev); 563 long val; 564 565 switch (sattr->index) { 566 case 0: 567 val = data->enh_acoustics[0] & 0xf; 568 break; 569 case 1: 570 val = data->enh_acoustics[1] & 0xf; 571 break; 572 case 2: 573 default: 574 val = (data->enh_acoustics[1] >> 4) & 0xf; 575 break; 576 } 577 578 if (val & 0x8) 579 return sprintf(buf, "%d\n", ad7475_st_map[val & 0x7]); 580 else 581 return sprintf(buf, "0\n"); 582} 583 584static ssize_t temp_st_store(struct device *dev, 585 struct device_attribute *attr, const char *buf, 586 size_t count) 587{ 588 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 589 struct adt7475_data *data = dev_get_drvdata(dev); 590 struct i2c_client *client = data->client; 591 unsigned char reg; 592 int shift, idx; 593 ulong val; 594 595 if (kstrtoul(buf, 10, &val)) 596 return -EINVAL; 597 598 switch (sattr->index) { 599 case 0: 600 reg = REG_ENHANCE_ACOUSTICS1; 601 shift = 0; 602 idx = 0; 603 break; 604 case 1: 605 reg = REG_ENHANCE_ACOUSTICS2; 606 shift = 0; 607 idx = 1; 608 break; 609 case 2: 610 default: 611 reg = REG_ENHANCE_ACOUSTICS2; 612 shift = 4; 613 idx = 1; 614 break; 615 } 616 617 if (val > 0) { 618 val = find_closest_descending(val, ad7475_st_map, 619 ARRAY_SIZE(ad7475_st_map)); 620 val |= 0x8; 621 } 622 623 mutex_lock(&data->lock); 624 625 data->enh_acoustics[idx] &= ~(0xf << shift); 626 data->enh_acoustics[idx] |= (val << shift); 627 628 i2c_smbus_write_byte_data(client, reg, data->enh_acoustics[idx]); 629 630 mutex_unlock(&data->lock); 631 632 return count; 633} 634 635/* 636 * Table of autorange values - the user will write the value in millidegrees, 637 * and we'll convert it 638 */ 639static const int autorange_table[] = { 640 2000, 2500, 3330, 4000, 5000, 6670, 8000, 641 10000, 13330, 16000, 20000, 26670, 32000, 40000, 642 53330, 80000 643}; 644 645static ssize_t point2_show(struct device *dev, struct device_attribute *attr, 646 char *buf) 647{ 648 struct adt7475_data *data = adt7475_update_device(dev); 649 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 650 int out, val; 651 652 if (IS_ERR(data)) 653 return PTR_ERR(data); 654 655 mutex_lock(&data->lock); 656 out = (data->range[sattr->index] >> 4) & 0x0F; 657 val = reg2temp(data, data->temp[AUTOMIN][sattr->index]); 658 mutex_unlock(&data->lock); 659 660 return sprintf(buf, "%d\n", val + autorange_table[out]); 661} 662 663static ssize_t point2_store(struct device *dev, struct device_attribute *attr, 664 const char *buf, size_t count) 665{ 666 struct adt7475_data *data = dev_get_drvdata(dev); 667 struct i2c_client *client = data->client; 668 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 669 int temp; 670 long val; 671 672 if (kstrtol(buf, 10, &val)) 673 return -EINVAL; 674 675 mutex_lock(&data->lock); 676 677 /* Get a fresh copy of the needed registers */ 678 data->config5 = adt7475_read(REG_CONFIG5); 679 data->temp[AUTOMIN][sattr->index] = 680 adt7475_read(TEMP_TMIN_REG(sattr->index)) << 2; 681 data->range[sattr->index] = 682 adt7475_read(TEMP_TRANGE_REG(sattr->index)); 683 684 /* 685 * The user will write an absolute value, so subtract the start point 686 * to figure the range 687 */ 688 temp = reg2temp(data, data->temp[AUTOMIN][sattr->index]); 689 val = clamp_val(val, temp + autorange_table[0], 690 temp + autorange_table[ARRAY_SIZE(autorange_table) - 1]); 691 val -= temp; 692 693 /* Find the nearest table entry to what the user wrote */ 694 val = find_closest(val, autorange_table, ARRAY_SIZE(autorange_table)); 695 696 data->range[sattr->index] &= ~0xF0; 697 data->range[sattr->index] |= val << 4; 698 699 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index), 700 data->range[sattr->index]); 701 702 mutex_unlock(&data->lock); 703 return count; 704} 705 706static ssize_t tach_show(struct device *dev, struct device_attribute *attr, 707 char *buf) 708{ 709 struct adt7475_data *data = adt7475_update_device(dev); 710 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 711 int out; 712 713 if (IS_ERR(data)) 714 return PTR_ERR(data); 715 716 if (sattr->nr == ALARM) 717 out = (data->alarms >> (sattr->index + 10)) & 1; 718 else 719 out = tach2rpm(data->tach[sattr->nr][sattr->index]); 720 721 return sprintf(buf, "%d\n", out); 722} 723 724static ssize_t tach_store(struct device *dev, struct device_attribute *attr, 725 const char *buf, size_t count) 726{ 727 728 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 729 struct adt7475_data *data = dev_get_drvdata(dev); 730 struct i2c_client *client = data->client; 731 unsigned long val; 732 733 if (kstrtoul(buf, 10, &val)) 734 return -EINVAL; 735 736 mutex_lock(&data->lock); 737 738 data->tach[MIN][sattr->index] = rpm2tach(val); 739 740 adt7475_write_word(client, TACH_MIN_REG(sattr->index), 741 data->tach[MIN][sattr->index]); 742 743 mutex_unlock(&data->lock); 744 return count; 745} 746 747static ssize_t pwm_show(struct device *dev, struct device_attribute *attr, 748 char *buf) 749{ 750 struct adt7475_data *data = adt7475_update_device(dev); 751 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 752 753 if (IS_ERR(data)) 754 return PTR_ERR(data); 755 756 return sprintf(buf, "%d\n", data->pwm[sattr->nr][sattr->index]); 757} 758 759static ssize_t pwmchan_show(struct device *dev, struct device_attribute *attr, 760 char *buf) 761{ 762 struct adt7475_data *data = adt7475_update_device(dev); 763 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 764 765 if (IS_ERR(data)) 766 return PTR_ERR(data); 767 768 return sprintf(buf, "%d\n", data->pwmchan[sattr->index]); 769} 770 771static ssize_t pwmctrl_show(struct device *dev, struct device_attribute *attr, 772 char *buf) 773{ 774 struct adt7475_data *data = adt7475_update_device(dev); 775 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 776 777 if (IS_ERR(data)) 778 return PTR_ERR(data); 779 780 return sprintf(buf, "%d\n", data->pwmctl[sattr->index]); 781} 782 783static ssize_t pwm_store(struct device *dev, struct device_attribute *attr, 784 const char *buf, size_t count) 785{ 786 787 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 788 struct adt7475_data *data = dev_get_drvdata(dev); 789 struct i2c_client *client = data->client; 790 unsigned char reg = 0; 791 long val; 792 793 if (kstrtol(buf, 10, &val)) 794 return -EINVAL; 795 796 mutex_lock(&data->lock); 797 798 switch (sattr->nr) { 799 case INPUT: 800 /* Get a fresh value for CONTROL */ 801 data->pwm[CONTROL][sattr->index] = 802 adt7475_read(PWM_CONFIG_REG(sattr->index)); 803 804 /* 805 * If we are not in manual mode, then we shouldn't allow 806 * the user to set the pwm speed 807 */ 808 if (((data->pwm[CONTROL][sattr->index] >> 5) & 7) != 7) { 809 mutex_unlock(&data->lock); 810 return count; 811 } 812 813 reg = PWM_REG(sattr->index); 814 break; 815 816 case MIN: 817 reg = PWM_MIN_REG(sattr->index); 818 break; 819 820 case MAX: 821 reg = PWM_MAX_REG(sattr->index); 822 break; 823 } 824 825 data->pwm[sattr->nr][sattr->index] = clamp_val(val, 0, 0xFF); 826 i2c_smbus_write_byte_data(client, reg, 827 data->pwm[sattr->nr][sattr->index]); 828 mutex_unlock(&data->lock); 829 830 return count; 831} 832 833static ssize_t stall_disable_show(struct device *dev, 834 struct device_attribute *attr, char *buf) 835{ 836 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 837 struct adt7475_data *data = dev_get_drvdata(dev); 838 839 u8 mask = BIT(5 + sattr->index); 840 841 return sprintf(buf, "%d\n", !!(data->enh_acoustics[0] & mask)); 842} 843 844static ssize_t stall_disable_store(struct device *dev, 845 struct device_attribute *attr, 846 const char *buf, size_t count) 847{ 848 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 849 struct adt7475_data *data = dev_get_drvdata(dev); 850 struct i2c_client *client = data->client; 851 long val; 852 u8 mask = BIT(5 + sattr->index); 853 854 if (kstrtol(buf, 10, &val)) 855 return -EINVAL; 856 857 mutex_lock(&data->lock); 858 859 data->enh_acoustics[0] &= ~mask; 860 if (val) 861 data->enh_acoustics[0] |= mask; 862 863 i2c_smbus_write_byte_data(client, REG_ENHANCE_ACOUSTICS1, 864 data->enh_acoustics[0]); 865 866 mutex_unlock(&data->lock); 867 868 return count; 869} 870 871/* Called by set_pwmctrl and set_pwmchan */ 872 873static int hw_set_pwm(struct i2c_client *client, int index, 874 unsigned int pwmctl, unsigned int pwmchan) 875{ 876 struct adt7475_data *data = i2c_get_clientdata(client); 877 long val = 0; 878 879 switch (pwmctl) { 880 case 0: 881 val = 0x03; /* Run at full speed */ 882 break; 883 case 1: 884 val = 0x07; /* Manual mode */ 885 break; 886 case 2: 887 switch (pwmchan) { 888 case 1: 889 /* Remote1 controls PWM */ 890 val = 0x00; 891 break; 892 case 2: 893 /* local controls PWM */ 894 val = 0x01; 895 break; 896 case 4: 897 /* remote2 controls PWM */ 898 val = 0x02; 899 break; 900 case 6: 901 /* local/remote2 control PWM */ 902 val = 0x05; 903 break; 904 case 7: 905 /* All three control PWM */ 906 val = 0x06; 907 break; 908 default: 909 return -EINVAL; 910 } 911 break; 912 default: 913 return -EINVAL; 914 } 915 916 data->pwmctl[index] = pwmctl; 917 data->pwmchan[index] = pwmchan; 918 919 data->pwm[CONTROL][index] &= ~0xE0; 920 data->pwm[CONTROL][index] |= (val & 7) << 5; 921 922 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index), 923 data->pwm[CONTROL][index]); 924 925 return 0; 926} 927 928static ssize_t pwmchan_store(struct device *dev, 929 struct device_attribute *attr, const char *buf, 930 size_t count) 931{ 932 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 933 struct adt7475_data *data = dev_get_drvdata(dev); 934 struct i2c_client *client = data->client; 935 int r; 936 long val; 937 938 if (kstrtol(buf, 10, &val)) 939 return -EINVAL; 940 941 mutex_lock(&data->lock); 942 /* Read Modify Write PWM values */ 943 adt7475_read_pwm(client, sattr->index); 944 r = hw_set_pwm(client, sattr->index, data->pwmctl[sattr->index], val); 945 if (r) 946 count = r; 947 mutex_unlock(&data->lock); 948 949 return count; 950} 951 952static ssize_t pwmctrl_store(struct device *dev, 953 struct device_attribute *attr, const char *buf, 954 size_t count) 955{ 956 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 957 struct adt7475_data *data = dev_get_drvdata(dev); 958 struct i2c_client *client = data->client; 959 int r; 960 long val; 961 962 if (kstrtol(buf, 10, &val)) 963 return -EINVAL; 964 965 mutex_lock(&data->lock); 966 /* Read Modify Write PWM values */ 967 adt7475_read_pwm(client, sattr->index); 968 r = hw_set_pwm(client, sattr->index, val, data->pwmchan[sattr->index]); 969 if (r) 970 count = r; 971 mutex_unlock(&data->lock); 972 973 return count; 974} 975 976/* List of frequencies for the PWM */ 977static const int pwmfreq_table[] = { 978 11, 14, 22, 29, 35, 44, 58, 88, 22500 979}; 980 981static ssize_t pwmfreq_show(struct device *dev, struct device_attribute *attr, 982 char *buf) 983{ 984 struct adt7475_data *data = adt7475_update_device(dev); 985 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 986 int idx; 987 988 if (IS_ERR(data)) 989 return PTR_ERR(data); 990 idx = clamp_val(data->range[sattr->index] & 0xf, 0, 991 ARRAY_SIZE(pwmfreq_table) - 1); 992 993 return sprintf(buf, "%d\n", pwmfreq_table[idx]); 994} 995 996static ssize_t pwmfreq_store(struct device *dev, 997 struct device_attribute *attr, const char *buf, 998 size_t count) 999{ 1000 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 1001 struct adt7475_data *data = dev_get_drvdata(dev); 1002 struct i2c_client *client = data->client; 1003 int out; 1004 long val; 1005 1006 if (kstrtol(buf, 10, &val)) 1007 return -EINVAL; 1008 1009 out = find_closest(val, pwmfreq_table, ARRAY_SIZE(pwmfreq_table)); 1010 1011 mutex_lock(&data->lock); 1012 1013 data->range[sattr->index] = 1014 adt7475_read(TEMP_TRANGE_REG(sattr->index)); 1015 data->range[sattr->index] &= ~0xf; 1016 data->range[sattr->index] |= out; 1017 1018 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index), 1019 data->range[sattr->index]); 1020 1021 mutex_unlock(&data->lock); 1022 return count; 1023} 1024 1025static ssize_t pwm_use_point2_pwm_at_crit_show(struct device *dev, 1026 struct device_attribute *devattr, 1027 char *buf) 1028{ 1029 struct adt7475_data *data = adt7475_update_device(dev); 1030 1031 if (IS_ERR(data)) 1032 return PTR_ERR(data); 1033 1034 return sprintf(buf, "%d\n", !!(data->config4 & CONFIG4_MAXDUTY)); 1035} 1036 1037static ssize_t pwm_use_point2_pwm_at_crit_store(struct device *dev, 1038 struct device_attribute *devattr, 1039 const char *buf, size_t count) 1040{ 1041 struct adt7475_data *data = dev_get_drvdata(dev); 1042 struct i2c_client *client = data->client; 1043 long val; 1044 1045 if (kstrtol(buf, 10, &val)) 1046 return -EINVAL; 1047 if (val != 0 && val != 1) 1048 return -EINVAL; 1049 1050 mutex_lock(&data->lock); 1051 data->config4 = i2c_smbus_read_byte_data(client, REG_CONFIG4); 1052 if (val) 1053 data->config4 |= CONFIG4_MAXDUTY; 1054 else 1055 data->config4 &= ~CONFIG4_MAXDUTY; 1056 i2c_smbus_write_byte_data(client, REG_CONFIG4, data->config4); 1057 mutex_unlock(&data->lock); 1058 1059 return count; 1060} 1061 1062static ssize_t vrm_show(struct device *dev, struct device_attribute *devattr, 1063 char *buf) 1064{ 1065 struct adt7475_data *data = dev_get_drvdata(dev); 1066 return sprintf(buf, "%d\n", (int)data->vrm); 1067} 1068 1069static ssize_t vrm_store(struct device *dev, struct device_attribute *devattr, 1070 const char *buf, size_t count) 1071{ 1072 struct adt7475_data *data = dev_get_drvdata(dev); 1073 long val; 1074 1075 if (kstrtol(buf, 10, &val)) 1076 return -EINVAL; 1077 if (val < 0 || val > 255) 1078 return -EINVAL; 1079 data->vrm = val; 1080 1081 return count; 1082} 1083 1084static ssize_t cpu0_vid_show(struct device *dev, 1085 struct device_attribute *devattr, char *buf) 1086{ 1087 struct adt7475_data *data = adt7475_update_device(dev); 1088 1089 if (IS_ERR(data)) 1090 return PTR_ERR(data); 1091 1092 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm)); 1093} 1094 1095static SENSOR_DEVICE_ATTR_2_RO(in0_input, voltage, INPUT, 0); 1096static SENSOR_DEVICE_ATTR_2_RW(in0_max, voltage, MAX, 0); 1097static SENSOR_DEVICE_ATTR_2_RW(in0_min, voltage, MIN, 0); 1098static SENSOR_DEVICE_ATTR_2_RO(in0_alarm, voltage, ALARM, 0); 1099static SENSOR_DEVICE_ATTR_2_RO(in1_input, voltage, INPUT, 1); 1100static SENSOR_DEVICE_ATTR_2_RW(in1_max, voltage, MAX, 1); 1101static SENSOR_DEVICE_ATTR_2_RW(in1_min, voltage, MIN, 1); 1102static SENSOR_DEVICE_ATTR_2_RO(in1_alarm, voltage, ALARM, 1); 1103static SENSOR_DEVICE_ATTR_2_RO(in2_input, voltage, INPUT, 2); 1104static SENSOR_DEVICE_ATTR_2_RW(in2_max, voltage, MAX, 2); 1105static SENSOR_DEVICE_ATTR_2_RW(in2_min, voltage, MIN, 2); 1106static SENSOR_DEVICE_ATTR_2_RO(in2_alarm, voltage, ALARM, 2); 1107static SENSOR_DEVICE_ATTR_2_RO(in3_input, voltage, INPUT, 3); 1108static SENSOR_DEVICE_ATTR_2_RW(in3_max, voltage, MAX, 3); 1109static SENSOR_DEVICE_ATTR_2_RW(in3_min, voltage, MIN, 3); 1110static SENSOR_DEVICE_ATTR_2_RO(in3_alarm, voltage, ALARM, 3); 1111static SENSOR_DEVICE_ATTR_2_RO(in4_input, voltage, INPUT, 4); 1112static SENSOR_DEVICE_ATTR_2_RW(in4_max, voltage, MAX, 4); 1113static SENSOR_DEVICE_ATTR_2_RW(in4_min, voltage, MIN, 4); 1114static SENSOR_DEVICE_ATTR_2_RO(in4_alarm, voltage, ALARM, 8); 1115static SENSOR_DEVICE_ATTR_2_RO(in5_input, voltage, INPUT, 5); 1116static SENSOR_DEVICE_ATTR_2_RW(in5_max, voltage, MAX, 5); 1117static SENSOR_DEVICE_ATTR_2_RW(in5_min, voltage, MIN, 5); 1118static SENSOR_DEVICE_ATTR_2_RO(in5_alarm, voltage, ALARM, 31); 1119static SENSOR_DEVICE_ATTR_2_RO(in6_input, voltage, INPUT, 6); 1120static SENSOR_DEVICE_ATTR_2_RW(in6_max, voltage, MAX, 6); 1121static SENSOR_DEVICE_ATTR_2_RW(in6_min, voltage, MIN, 6); 1122static SENSOR_DEVICE_ATTR_2_RO(in6_alarm, voltage, ALARM, 30); 1123static SENSOR_DEVICE_ATTR_2_RO(temp1_input, temp, INPUT, 0); 1124static SENSOR_DEVICE_ATTR_2_RO(temp1_alarm, temp, ALARM, 0); 1125static SENSOR_DEVICE_ATTR_2_RO(temp1_fault, temp, FAULT, 0); 1126static SENSOR_DEVICE_ATTR_2_RW(temp1_max, temp, MAX, 0); 1127static SENSOR_DEVICE_ATTR_2_RW(temp1_min, temp, MIN, 0); 1128static SENSOR_DEVICE_ATTR_2_RW(temp1_offset, temp, OFFSET, 0); 1129static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_point1_temp, temp, AUTOMIN, 0); 1130static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_point2_temp, point2, 0, 0); 1131static SENSOR_DEVICE_ATTR_2_RW(temp1_crit, temp, THERM, 0); 1132static SENSOR_DEVICE_ATTR_2_RW(temp1_crit_hyst, temp, HYSTERSIS, 0); 1133static SENSOR_DEVICE_ATTR_2_RW(temp1_smoothing, temp_st, 0, 0); 1134static SENSOR_DEVICE_ATTR_2_RO(temp2_input, temp, INPUT, 1); 1135static SENSOR_DEVICE_ATTR_2_RO(temp2_alarm, temp, ALARM, 1); 1136static SENSOR_DEVICE_ATTR_2_RW(temp2_max, temp, MAX, 1); 1137static SENSOR_DEVICE_ATTR_2_RW(temp2_min, temp, MIN, 1); 1138static SENSOR_DEVICE_ATTR_2_RW(temp2_offset, temp, OFFSET, 1); 1139static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point1_temp, temp, AUTOMIN, 1); 1140static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point2_temp, point2, 0, 1); 1141static SENSOR_DEVICE_ATTR_2_RW(temp2_crit, temp, THERM, 1); 1142static SENSOR_DEVICE_ATTR_2_RW(temp2_crit_hyst, temp, HYSTERSIS, 1); 1143static SENSOR_DEVICE_ATTR_2_RW(temp2_smoothing, temp_st, 0, 1); 1144static SENSOR_DEVICE_ATTR_2_RO(temp3_input, temp, INPUT, 2); 1145static SENSOR_DEVICE_ATTR_2_RO(temp3_alarm, temp, ALARM, 2); 1146static SENSOR_DEVICE_ATTR_2_RO(temp3_fault, temp, FAULT, 2); 1147static SENSOR_DEVICE_ATTR_2_RW(temp3_max, temp, MAX, 2); 1148static SENSOR_DEVICE_ATTR_2_RW(temp3_min, temp, MIN, 2); 1149static SENSOR_DEVICE_ATTR_2_RW(temp3_offset, temp, OFFSET, 2); 1150static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_point1_temp, temp, AUTOMIN, 2); 1151static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_point2_temp, point2, 0, 2); 1152static SENSOR_DEVICE_ATTR_2_RW(temp3_crit, temp, THERM, 2); 1153static SENSOR_DEVICE_ATTR_2_RW(temp3_crit_hyst, temp, HYSTERSIS, 2); 1154static SENSOR_DEVICE_ATTR_2_RW(temp3_smoothing, temp_st, 0, 2); 1155static SENSOR_DEVICE_ATTR_2_RO(fan1_input, tach, INPUT, 0); 1156static SENSOR_DEVICE_ATTR_2_RW(fan1_min, tach, MIN, 0); 1157static SENSOR_DEVICE_ATTR_2_RO(fan1_alarm, tach, ALARM, 0); 1158static SENSOR_DEVICE_ATTR_2_RO(fan2_input, tach, INPUT, 1); 1159static SENSOR_DEVICE_ATTR_2_RW(fan2_min, tach, MIN, 1); 1160static SENSOR_DEVICE_ATTR_2_RO(fan2_alarm, tach, ALARM, 1); 1161static SENSOR_DEVICE_ATTR_2_RO(fan3_input, tach, INPUT, 2); 1162static SENSOR_DEVICE_ATTR_2_RW(fan3_min, tach, MIN, 2); 1163static SENSOR_DEVICE_ATTR_2_RO(fan3_alarm, tach, ALARM, 2); 1164static SENSOR_DEVICE_ATTR_2_RO(fan4_input, tach, INPUT, 3); 1165static SENSOR_DEVICE_ATTR_2_RW(fan4_min, tach, MIN, 3); 1166static SENSOR_DEVICE_ATTR_2_RO(fan4_alarm, tach, ALARM, 3); 1167static SENSOR_DEVICE_ATTR_2_RW(pwm1, pwm, INPUT, 0); 1168static SENSOR_DEVICE_ATTR_2_RW(pwm1_freq, pwmfreq, INPUT, 0); 1169static SENSOR_DEVICE_ATTR_2_RW(pwm1_enable, pwmctrl, INPUT, 0); 1170static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_channels_temp, pwmchan, INPUT, 0); 1171static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point1_pwm, pwm, MIN, 0); 1172static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point2_pwm, pwm, MAX, 0); 1173static SENSOR_DEVICE_ATTR_2_RW(pwm1_stall_disable, stall_disable, 0, 0); 1174static SENSOR_DEVICE_ATTR_2_RW(pwm2, pwm, INPUT, 1); 1175static SENSOR_DEVICE_ATTR_2_RW(pwm2_freq, pwmfreq, INPUT, 1); 1176static SENSOR_DEVICE_ATTR_2_RW(pwm2_enable, pwmctrl, INPUT, 1); 1177static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_channels_temp, pwmchan, INPUT, 1); 1178static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point1_pwm, pwm, MIN, 1); 1179static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point2_pwm, pwm, MAX, 1); 1180static SENSOR_DEVICE_ATTR_2_RW(pwm2_stall_disable, stall_disable, 0, 1); 1181static SENSOR_DEVICE_ATTR_2_RW(pwm3, pwm, INPUT, 2); 1182static SENSOR_DEVICE_ATTR_2_RW(pwm3_freq, pwmfreq, INPUT, 2); 1183static SENSOR_DEVICE_ATTR_2_RW(pwm3_enable, pwmctrl, INPUT, 2); 1184static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_channels_temp, pwmchan, INPUT, 2); 1185static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point1_pwm, pwm, MIN, 2); 1186static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point2_pwm, pwm, MAX, 2); 1187static SENSOR_DEVICE_ATTR_2_RW(pwm3_stall_disable, stall_disable, 0, 2); 1188 1189/* Non-standard name, might need revisiting */ 1190static DEVICE_ATTR_RW(pwm_use_point2_pwm_at_crit); 1191 1192static DEVICE_ATTR_RW(vrm); 1193static DEVICE_ATTR_RO(cpu0_vid); 1194 1195static struct attribute *adt7475_attrs[] = { 1196 &sensor_dev_attr_in1_input.dev_attr.attr, 1197 &sensor_dev_attr_in1_max.dev_attr.attr, 1198 &sensor_dev_attr_in1_min.dev_attr.attr, 1199 &sensor_dev_attr_in1_alarm.dev_attr.attr, 1200 &sensor_dev_attr_in2_input.dev_attr.attr, 1201 &sensor_dev_attr_in2_max.dev_attr.attr, 1202 &sensor_dev_attr_in2_min.dev_attr.attr, 1203 &sensor_dev_attr_in2_alarm.dev_attr.attr, 1204 &sensor_dev_attr_temp1_input.dev_attr.attr, 1205 &sensor_dev_attr_temp1_alarm.dev_attr.attr, 1206 &sensor_dev_attr_temp1_fault.dev_attr.attr, 1207 &sensor_dev_attr_temp1_max.dev_attr.attr, 1208 &sensor_dev_attr_temp1_min.dev_attr.attr, 1209 &sensor_dev_attr_temp1_offset.dev_attr.attr, 1210 &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr, 1211 &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr, 1212 &sensor_dev_attr_temp1_crit.dev_attr.attr, 1213 &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr, 1214 &sensor_dev_attr_temp1_smoothing.dev_attr.attr, 1215 &sensor_dev_attr_temp2_input.dev_attr.attr, 1216 &sensor_dev_attr_temp2_alarm.dev_attr.attr, 1217 &sensor_dev_attr_temp2_max.dev_attr.attr, 1218 &sensor_dev_attr_temp2_min.dev_attr.attr, 1219 &sensor_dev_attr_temp2_offset.dev_attr.attr, 1220 &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr, 1221 &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr, 1222 &sensor_dev_attr_temp2_crit.dev_attr.attr, 1223 &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr, 1224 &sensor_dev_attr_temp2_smoothing.dev_attr.attr, 1225 &sensor_dev_attr_temp3_input.dev_attr.attr, 1226 &sensor_dev_attr_temp3_fault.dev_attr.attr, 1227 &sensor_dev_attr_temp3_alarm.dev_attr.attr, 1228 &sensor_dev_attr_temp3_max.dev_attr.attr, 1229 &sensor_dev_attr_temp3_min.dev_attr.attr, 1230 &sensor_dev_attr_temp3_offset.dev_attr.attr, 1231 &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr, 1232 &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr, 1233 &sensor_dev_attr_temp3_crit.dev_attr.attr, 1234 &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr, 1235 &sensor_dev_attr_temp3_smoothing.dev_attr.attr, 1236 &sensor_dev_attr_fan1_input.dev_attr.attr, 1237 &sensor_dev_attr_fan1_min.dev_attr.attr, 1238 &sensor_dev_attr_fan1_alarm.dev_attr.attr, 1239 &sensor_dev_attr_fan2_input.dev_attr.attr, 1240 &sensor_dev_attr_fan2_min.dev_attr.attr, 1241 &sensor_dev_attr_fan2_alarm.dev_attr.attr, 1242 &sensor_dev_attr_fan3_input.dev_attr.attr, 1243 &sensor_dev_attr_fan3_min.dev_attr.attr, 1244 &sensor_dev_attr_fan3_alarm.dev_attr.attr, 1245 &sensor_dev_attr_pwm1.dev_attr.attr, 1246 &sensor_dev_attr_pwm1_freq.dev_attr.attr, 1247 &sensor_dev_attr_pwm1_enable.dev_attr.attr, 1248 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr, 1249 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr, 1250 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr, 1251 &sensor_dev_attr_pwm1_stall_disable.dev_attr.attr, 1252 &sensor_dev_attr_pwm3.dev_attr.attr, 1253 &sensor_dev_attr_pwm3_freq.dev_attr.attr, 1254 &sensor_dev_attr_pwm3_enable.dev_attr.attr, 1255 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr, 1256 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr, 1257 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr, 1258 &sensor_dev_attr_pwm3_stall_disable.dev_attr.attr, 1259 &dev_attr_pwm_use_point2_pwm_at_crit.attr, 1260 NULL, 1261}; 1262 1263static struct attribute *fan4_attrs[] = { 1264 &sensor_dev_attr_fan4_input.dev_attr.attr, 1265 &sensor_dev_attr_fan4_min.dev_attr.attr, 1266 &sensor_dev_attr_fan4_alarm.dev_attr.attr, 1267 NULL 1268}; 1269 1270static struct attribute *pwm2_attrs[] = { 1271 &sensor_dev_attr_pwm2.dev_attr.attr, 1272 &sensor_dev_attr_pwm2_freq.dev_attr.attr, 1273 &sensor_dev_attr_pwm2_enable.dev_attr.attr, 1274 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr, 1275 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr, 1276 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr, 1277 &sensor_dev_attr_pwm2_stall_disable.dev_attr.attr, 1278 NULL 1279}; 1280 1281static struct attribute *in0_attrs[] = { 1282 &sensor_dev_attr_in0_input.dev_attr.attr, 1283 &sensor_dev_attr_in0_max.dev_attr.attr, 1284 &sensor_dev_attr_in0_min.dev_attr.attr, 1285 &sensor_dev_attr_in0_alarm.dev_attr.attr, 1286 NULL 1287}; 1288 1289static struct attribute *in3_attrs[] = { 1290 &sensor_dev_attr_in3_input.dev_attr.attr, 1291 &sensor_dev_attr_in3_max.dev_attr.attr, 1292 &sensor_dev_attr_in3_min.dev_attr.attr, 1293 &sensor_dev_attr_in3_alarm.dev_attr.attr, 1294 NULL 1295}; 1296 1297static struct attribute *in4_attrs[] = { 1298 &sensor_dev_attr_in4_input.dev_attr.attr, 1299 &sensor_dev_attr_in4_max.dev_attr.attr, 1300 &sensor_dev_attr_in4_min.dev_attr.attr, 1301 &sensor_dev_attr_in4_alarm.dev_attr.attr, 1302 NULL 1303}; 1304 1305static struct attribute *in5_attrs[] = { 1306 &sensor_dev_attr_in5_input.dev_attr.attr, 1307 &sensor_dev_attr_in5_max.dev_attr.attr, 1308 &sensor_dev_attr_in5_min.dev_attr.attr, 1309 &sensor_dev_attr_in5_alarm.dev_attr.attr, 1310 NULL 1311}; 1312 1313static struct attribute *in6_attrs[] = { 1314 &sensor_dev_attr_in6_input.dev_attr.attr, 1315 &sensor_dev_attr_in6_max.dev_attr.attr, 1316 &sensor_dev_attr_in6_min.dev_attr.attr, 1317 &sensor_dev_attr_in6_alarm.dev_attr.attr, 1318 NULL 1319}; 1320 1321static struct attribute *vid_attrs[] = { 1322 &dev_attr_cpu0_vid.attr, 1323 &dev_attr_vrm.attr, 1324 NULL 1325}; 1326 1327static const struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs }; 1328static const struct attribute_group fan4_attr_group = { .attrs = fan4_attrs }; 1329static const struct attribute_group pwm2_attr_group = { .attrs = pwm2_attrs }; 1330static const struct attribute_group in0_attr_group = { .attrs = in0_attrs }; 1331static const struct attribute_group in3_attr_group = { .attrs = in3_attrs }; 1332static const struct attribute_group in4_attr_group = { .attrs = in4_attrs }; 1333static const struct attribute_group in5_attr_group = { .attrs = in5_attrs }; 1334static const struct attribute_group in6_attr_group = { .attrs = in6_attrs }; 1335static const struct attribute_group vid_attr_group = { .attrs = vid_attrs }; 1336 1337static int adt7475_detect(struct i2c_client *client, 1338 struct i2c_board_info *info) 1339{ 1340 struct i2c_adapter *adapter = client->adapter; 1341 int vendid, devid, devid2; 1342 const char *name; 1343 1344 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 1345 return -ENODEV; 1346 1347 vendid = adt7475_read(REG_VENDID); 1348 devid2 = adt7475_read(REG_DEVID2); 1349 if (vendid != 0x41 || /* Analog Devices */ 1350 (devid2 & 0xf8) != 0x68) 1351 return -ENODEV; 1352 1353 devid = adt7475_read(REG_DEVID); 1354 if (devid == 0x73) 1355 name = "adt7473"; 1356 else if (devid == 0x75 && client->addr == 0x2e) 1357 name = "adt7475"; 1358 else if (devid == 0x76) 1359 name = "adt7476"; 1360 else if ((devid2 & 0xfc) == 0x6c) 1361 name = "adt7490"; 1362 else { 1363 dev_dbg(&adapter->dev, 1364 "Couldn't detect an ADT7473/75/76/90 part at " 1365 "0x%02x\n", (unsigned int)client->addr); 1366 return -ENODEV; 1367 } 1368 1369 strscpy(info->type, name, I2C_NAME_SIZE); 1370 1371 return 0; 1372} 1373 1374static int adt7475_update_limits(struct i2c_client *client) 1375{ 1376 struct adt7475_data *data = i2c_get_clientdata(client); 1377 int i; 1378 int ret; 1379 1380 ret = adt7475_read(REG_CONFIG4); 1381 if (ret < 0) 1382 return ret; 1383 data->config4 = ret; 1384 1385 ret = adt7475_read(REG_CONFIG5); 1386 if (ret < 0) 1387 return ret; 1388 data->config5 = ret; 1389 1390 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) { 1391 if (!(data->has_voltage & (1 << i))) 1392 continue; 1393 /* Adjust values so they match the input precision */ 1394 ret = adt7475_read(VOLTAGE_MIN_REG(i)); 1395 if (ret < 0) 1396 return ret; 1397 data->voltage[MIN][i] = ret << 2; 1398 1399 ret = adt7475_read(VOLTAGE_MAX_REG(i)); 1400 if (ret < 0) 1401 return ret; 1402 data->voltage[MAX][i] = ret << 2; 1403 } 1404 1405 if (data->has_voltage & (1 << 5)) { 1406 ret = adt7475_read(REG_VTT_MIN); 1407 if (ret < 0) 1408 return ret; 1409 data->voltage[MIN][5] = ret << 2; 1410 1411 ret = adt7475_read(REG_VTT_MAX); 1412 if (ret < 0) 1413 return ret; 1414 data->voltage[MAX][5] = ret << 2; 1415 } 1416 1417 if (data->has_voltage & (1 << 6)) { 1418 ret = adt7475_read(REG_IMON_MIN); 1419 if (ret < 0) 1420 return ret; 1421 data->voltage[MIN][6] = ret << 2; 1422 1423 ret = adt7475_read(REG_IMON_MAX); 1424 if (ret < 0) 1425 return ret; 1426 data->voltage[MAX][6] = ret << 2; 1427 } 1428 1429 for (i = 0; i < ADT7475_TEMP_COUNT; i++) { 1430 /* Adjust values so they match the input precision */ 1431 ret = adt7475_read(TEMP_MIN_REG(i)); 1432 if (ret < 0) 1433 return ret; 1434 data->temp[MIN][i] = ret << 2; 1435 1436 ret = adt7475_read(TEMP_MAX_REG(i)); 1437 if (ret < 0) 1438 return ret; 1439 data->temp[MAX][i] = ret << 2; 1440 1441 ret = adt7475_read(TEMP_TMIN_REG(i)); 1442 if (ret < 0) 1443 return ret; 1444 data->temp[AUTOMIN][i] = ret << 2; 1445 1446 ret = adt7475_read(TEMP_THERM_REG(i)); 1447 if (ret < 0) 1448 return ret; 1449 data->temp[THERM][i] = ret << 2; 1450 1451 ret = adt7475_read(TEMP_OFFSET_REG(i)); 1452 if (ret < 0) 1453 return ret; 1454 data->temp[OFFSET][i] = ret; 1455 } 1456 adt7475_read_hystersis(client); 1457 1458 for (i = 0; i < ADT7475_TACH_COUNT; i++) { 1459 if (i == 3 && !data->has_fan4) 1460 continue; 1461 ret = adt7475_read_word(client, TACH_MIN_REG(i)); 1462 if (ret < 0) 1463 return ret; 1464 data->tach[MIN][i] = ret; 1465 } 1466 1467 for (i = 0; i < ADT7475_PWM_COUNT; i++) { 1468 if (i == 1 && !data->has_pwm2) 1469 continue; 1470 ret = adt7475_read(PWM_MAX_REG(i)); 1471 if (ret < 0) 1472 return ret; 1473 data->pwm[MAX][i] = ret; 1474 1475 ret = adt7475_read(PWM_MIN_REG(i)); 1476 if (ret < 0) 1477 return ret; 1478 data->pwm[MIN][i] = ret; 1479 /* Set the channel and control information */ 1480 adt7475_read_pwm(client, i); 1481 } 1482 1483 ret = adt7475_read(TEMP_TRANGE_REG(0)); 1484 if (ret < 0) 1485 return ret; 1486 data->range[0] = ret; 1487 1488 ret = adt7475_read(TEMP_TRANGE_REG(1)); 1489 if (ret < 0) 1490 return ret; 1491 data->range[1] = ret; 1492 1493 ret = adt7475_read(TEMP_TRANGE_REG(2)); 1494 if (ret < 0) 1495 return ret; 1496 data->range[2] = ret; 1497 1498 return 0; 1499} 1500 1501static int load_config3(const struct i2c_client *client, const char *propname) 1502{ 1503 const char *function; 1504 u8 config3; 1505 int ret; 1506 1507 ret = device_property_read_string(&client->dev, propname, &function); 1508 if (!ret) { 1509 ret = adt7475_read(REG_CONFIG3); 1510 if (ret < 0) 1511 return ret; 1512 1513 config3 = ret & ~CONFIG3_SMBALERT; 1514 if (!strcmp("pwm2", function)) 1515 ; 1516 else if (!strcmp("smbalert#", function)) 1517 config3 |= CONFIG3_SMBALERT; 1518 else 1519 return -EINVAL; 1520 1521 return i2c_smbus_write_byte_data(client, REG_CONFIG3, config3); 1522 } 1523 1524 return 0; 1525} 1526 1527static int load_config4(const struct i2c_client *client, const char *propname) 1528{ 1529 const char *function; 1530 u8 config4; 1531 int ret; 1532 1533 ret = device_property_read_string(&client->dev, propname, &function); 1534 if (!ret) { 1535 ret = adt7475_read(REG_CONFIG4); 1536 if (ret < 0) 1537 return ret; 1538 1539 config4 = ret & ~CONFIG4_PINFUNC; 1540 1541 if (!strcmp("tach4", function)) 1542 ; 1543 else if (!strcmp("therm#", function)) 1544 config4 |= CONFIG4_THERM; 1545 else if (!strcmp("smbalert#", function)) 1546 config4 |= CONFIG4_SMBALERT; 1547 else if (!strcmp("gpio", function)) 1548 config4 |= CONFIG4_PINFUNC; 1549 else 1550 return -EINVAL; 1551 1552 return i2c_smbus_write_byte_data(client, REG_CONFIG4, config4); 1553 } 1554 1555 return 0; 1556} 1557 1558static int load_config(const struct i2c_client *client, enum chips chip) 1559{ 1560 int err; 1561 const char *prop1, *prop2; 1562 1563 switch (chip) { 1564 case adt7473: 1565 case adt7475: 1566 prop1 = "adi,pin5-function"; 1567 prop2 = "adi,pin9-function"; 1568 break; 1569 case adt7476: 1570 case adt7490: 1571 prop1 = "adi,pin10-function"; 1572 prop2 = "adi,pin14-function"; 1573 break; 1574 } 1575 1576 err = load_config3(client, prop1); 1577 if (err) { 1578 dev_err(&client->dev, "failed to configure %s\n", prop1); 1579 return err; 1580 } 1581 1582 err = load_config4(client, prop2); 1583 if (err) { 1584 dev_err(&client->dev, "failed to configure %s\n", prop2); 1585 return err; 1586 } 1587 1588 return 0; 1589} 1590 1591static int set_property_bit(const struct i2c_client *client, char *property, 1592 u8 *config, u8 bit_index) 1593{ 1594 u32 prop_value = 0; 1595 int ret = device_property_read_u32(&client->dev, property, 1596 &prop_value); 1597 1598 if (!ret) { 1599 if (prop_value) 1600 *config |= (1 << bit_index); 1601 else 1602 *config &= ~(1 << bit_index); 1603 } 1604 1605 return ret; 1606} 1607 1608static int load_attenuators(const struct i2c_client *client, enum chips chip, 1609 struct adt7475_data *data) 1610{ 1611 switch (chip) { 1612 case adt7476: 1613 case adt7490: 1614 set_property_bit(client, "adi,bypass-attenuator-in0", 1615 &data->config4, 4); 1616 set_property_bit(client, "adi,bypass-attenuator-in1", 1617 &data->config4, 5); 1618 set_property_bit(client, "adi,bypass-attenuator-in3", 1619 &data->config4, 6); 1620 set_property_bit(client, "adi,bypass-attenuator-in4", 1621 &data->config4, 7); 1622 1623 return i2c_smbus_write_byte_data(client, REG_CONFIG4, 1624 data->config4); 1625 case adt7473: 1626 case adt7475: 1627 set_property_bit(client, "adi,bypass-attenuator-in1", 1628 &data->config2, 5); 1629 1630 return i2c_smbus_write_byte_data(client, REG_CONFIG2, 1631 data->config2); 1632 } 1633 1634 return 0; 1635} 1636 1637static int adt7475_set_pwm_polarity(struct i2c_client *client) 1638{ 1639 u32 states[ADT7475_PWM_COUNT]; 1640 int ret, i; 1641 u8 val; 1642 1643 ret = device_property_read_u32_array(&client->dev, 1644 "adi,pwm-active-state", states, 1645 ARRAY_SIZE(states)); 1646 if (ret) 1647 return ret; 1648 1649 for (i = 0; i < ADT7475_PWM_COUNT; i++) { 1650 ret = adt7475_read(PWM_CONFIG_REG(i)); 1651 if (ret < 0) 1652 return ret; 1653 val = ret; 1654 if (states[i]) 1655 val &= ~BIT(4); 1656 else 1657 val |= BIT(4); 1658 1659 ret = i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(i), val); 1660 if (ret) 1661 return ret; 1662 } 1663 1664 return 0; 1665} 1666 1667struct adt7475_pwm_config { 1668 int index; 1669 int freq; 1670 int flags; 1671 int duty; 1672}; 1673 1674static int _adt7475_pwm_properties_parse_args(u32 args[4], struct adt7475_pwm_config *cfg) 1675{ 1676 int freq_hz; 1677 int duty; 1678 1679 if (args[1] == 0) 1680 return -EINVAL; 1681 1682 freq_hz = 1000000000UL / args[1]; 1683 if (args[3] >= args[1]) 1684 duty = 255; 1685 else 1686 duty = div_u64(255ULL * args[3], args[1]); 1687 1688 cfg->index = args[0]; 1689 cfg->freq = find_closest(freq_hz, pwmfreq_table, ARRAY_SIZE(pwmfreq_table)); 1690 cfg->flags = args[2]; 1691 cfg->duty = duty; 1692 1693 return 0; 1694} 1695 1696static int adt7475_pwm_properties_parse_reference_args(struct fwnode_handle *fwnode, 1697 struct adt7475_pwm_config *cfg) 1698{ 1699 int ret, i; 1700 struct fwnode_reference_args rargs = {}; 1701 u32 args[4] = {}; 1702 1703 ret = fwnode_property_get_reference_args(fwnode, "pwms", "#pwm-cells", 0, 0, &rargs); 1704 if (ret) 1705 return ret; 1706 1707 if (rargs.nargs != 3 && rargs.nargs != 4) { 1708 fwnode_handle_put(rargs.fwnode); 1709 return -EINVAL; 1710 } 1711 1712 /* Let duty_cycle default to period */ 1713 args[3] = rargs.args[1]; 1714 1715 for (i = 0; i < rargs.nargs; i++) 1716 args[i] = rargs.args[i]; 1717 1718 ret = _adt7475_pwm_properties_parse_args(args, cfg); 1719 1720 fwnode_handle_put(rargs.fwnode); 1721 1722 return ret; 1723} 1724 1725static int adt7475_pwm_properties_parse_args(struct fwnode_handle *fwnode, 1726 struct adt7475_pwm_config *cfg) 1727{ 1728 int ret; 1729 u32 args[4] = {}; 1730 size_t n_vals = fwnode_property_count_u32(fwnode, "pwms"); 1731 1732 if (n_vals != 3 && n_vals != 4) 1733 return -EOVERFLOW; 1734 1735 ret = fwnode_property_read_u32_array(fwnode, "pwms", args, n_vals); 1736 if (ret) 1737 return ret; 1738 1739 /* 1740 * If there are no item to define the duty_cycle, default it to the 1741 * period. 1742 */ 1743 if (n_vals == 3) 1744 args[3] = args[1]; 1745 1746 return _adt7475_pwm_properties_parse_args(args, cfg); 1747} 1748 1749static int adt7475_fan_pwm_config(struct i2c_client *client) 1750{ 1751 struct adt7475_data *data = i2c_get_clientdata(client); 1752 struct adt7475_pwm_config cfg = {}; 1753 int ret; 1754 1755 device_for_each_child_node_scoped(&client->dev, child) { 1756 if (!fwnode_property_present(child, "pwms")) 1757 continue; 1758 1759 if (is_of_node(child)) 1760 ret = adt7475_pwm_properties_parse_reference_args(child, &cfg); 1761 else 1762 ret = adt7475_pwm_properties_parse_args(child, &cfg); 1763 1764 if (cfg.index >= ADT7475_PWM_COUNT) 1765 return -EINVAL; 1766 1767 ret = adt7475_read(PWM_CONFIG_REG(cfg.index)); 1768 if (ret < 0) 1769 return ret; 1770 data->pwm[CONTROL][cfg.index] = ret; 1771 if (cfg.flags & PWM_POLARITY_INVERTED) 1772 data->pwm[CONTROL][cfg.index] |= BIT(4); 1773 else 1774 data->pwm[CONTROL][cfg.index] &= ~BIT(4); 1775 1776 /* Force to manual mode so PWM values take effect */ 1777 data->pwm[CONTROL][cfg.index] &= ~0xE0; 1778 data->pwm[CONTROL][cfg.index] |= 0x07 << 5; 1779 1780 ret = i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(cfg.index), 1781 data->pwm[CONTROL][cfg.index]); 1782 if (ret) 1783 return ret; 1784 1785 data->pwm[INPUT][cfg.index] = cfg.duty; 1786 ret = i2c_smbus_write_byte_data(client, PWM_REG(cfg.index), 1787 data->pwm[INPUT][cfg.index]); 1788 if (ret) 1789 return ret; 1790 1791 data->range[cfg.index] = adt7475_read(TEMP_TRANGE_REG(cfg.index)); 1792 data->range[cfg.index] &= ~0xf; 1793 data->range[cfg.index] |= cfg.freq; 1794 1795 ret = i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(cfg.index), 1796 data->range[cfg.index]); 1797 if (ret) 1798 return ret; 1799 } 1800 1801 return 0; 1802} 1803 1804static int adt7475_probe(struct i2c_client *client) 1805{ 1806 enum chips chip; 1807 static const char * const names[] = { 1808 [adt7473] = "ADT7473", 1809 [adt7475] = "ADT7475", 1810 [adt7476] = "ADT7476", 1811 [adt7490] = "ADT7490", 1812 }; 1813 1814 struct adt7475_data *data; 1815 struct device *hwmon_dev; 1816 int i, ret = 0, revision, group_num = 0; 1817 u8 config3; 1818 1819 data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL); 1820 if (data == NULL) 1821 return -ENOMEM; 1822 1823 mutex_init(&data->lock); 1824 data->client = client; 1825 i2c_set_clientdata(client, data); 1826 1827 chip = (uintptr_t)i2c_get_match_data(client); 1828 1829 /* Initialize device-specific values */ 1830 switch (chip) { 1831 case adt7476: 1832 data->has_voltage = 0x0e; /* in1 to in3 */ 1833 revision = adt7475_read(REG_DEVID2) & 0x07; 1834 break; 1835 case adt7490: 1836 data->has_voltage = 0x7e; /* in1 to in6 */ 1837 revision = adt7475_read(REG_DEVID2) & 0x03; 1838 if (revision == 0x03) 1839 revision += adt7475_read(REG_DEVREV2); 1840 break; 1841 default: 1842 data->has_voltage = 0x06; /* in1, in2 */ 1843 revision = adt7475_read(REG_DEVID2) & 0x07; 1844 } 1845 1846 ret = load_config(client, chip); 1847 if (ret) 1848 return ret; 1849 1850 config3 = adt7475_read(REG_CONFIG3); 1851 /* Pin PWM2 may alternatively be used for ALERT output */ 1852 if (!(config3 & CONFIG3_SMBALERT)) 1853 data->has_pwm2 = 1; 1854 /* Meaning of this bit is inverted for the ADT7473-1 */ 1855 if (chip == adt7473 && revision >= 1) 1856 data->has_pwm2 = !data->has_pwm2; 1857 1858 data->config4 = adt7475_read(REG_CONFIG4); 1859 /* Pin TACH4 may alternatively be used for THERM */ 1860 if ((data->config4 & CONFIG4_PINFUNC) == 0x0) 1861 data->has_fan4 = 1; 1862 1863 /* 1864 * THERM configuration is more complex on the ADT7476 and ADT7490, 1865 * because 2 different pins (TACH4 and +2.5 Vin) can be used for 1866 * this function 1867 */ 1868 if (chip == adt7490) { 1869 if ((data->config4 & CONFIG4_PINFUNC) == 0x1 && 1870 !(config3 & CONFIG3_THERM)) 1871 data->has_fan4 = 1; 1872 } 1873 if (chip == adt7476 || chip == adt7490) { 1874 if (!(config3 & CONFIG3_THERM) || 1875 (data->config4 & CONFIG4_PINFUNC) == 0x1) 1876 data->has_voltage |= (1 << 0); /* in0 */ 1877 } 1878 1879 /* 1880 * On the ADT7476, the +12V input pin may instead be used as VID5, 1881 * and VID pins may alternatively be used as GPIO 1882 */ 1883 if (chip == adt7476) { 1884 u8 vid = adt7475_read(REG_VID); 1885 if (!(vid & VID_VIDSEL)) 1886 data->has_voltage |= (1 << 4); /* in4 */ 1887 1888 data->has_vid = !(adt7475_read(REG_CONFIG5) & CONFIG5_VIDGPIO); 1889 } 1890 1891 /* Voltage attenuators can be bypassed, globally or individually */ 1892 data->config2 = adt7475_read(REG_CONFIG2); 1893 ret = load_attenuators(client, chip, data); 1894 if (ret) 1895 dev_warn(&client->dev, "Error configuring attenuator bypass\n"); 1896 1897 if (data->config2 & CONFIG2_ATTN) { 1898 data->bypass_attn = (0x3 << 3) | 0x3; 1899 } else { 1900 data->bypass_attn = ((data->config4 & CONFIG4_ATTN_IN10) >> 4) | 1901 ((data->config4 & CONFIG4_ATTN_IN43) >> 3); 1902 } 1903 data->bypass_attn &= data->has_voltage; 1904 1905 /* 1906 * Call adt7475_read_pwm for all pwm's as this will reprogram any 1907 * pwm's which are disabled to manual mode with 0% duty cycle 1908 */ 1909 for (i = 0; i < ADT7475_PWM_COUNT; i++) 1910 adt7475_read_pwm(client, i); 1911 1912 ret = adt7475_set_pwm_polarity(client); 1913 if (ret && ret != -EINVAL) 1914 dev_warn(&client->dev, "Error configuring pwm polarity\n"); 1915 1916 ret = adt7475_fan_pwm_config(client); 1917 if (ret) 1918 dev_warn(&client->dev, "Error %d configuring fan/pwm\n", ret); 1919 1920 /* Start monitoring */ 1921 switch (chip) { 1922 case adt7475: 1923 case adt7476: 1924 i2c_smbus_write_byte_data(client, REG_CONFIG1, 1925 adt7475_read(REG_CONFIG1) | 0x01); 1926 break; 1927 default: 1928 break; 1929 } 1930 1931 data->groups[group_num++] = &adt7475_attr_group; 1932 1933 /* Features that can be disabled individually */ 1934 if (data->has_fan4) { 1935 data->groups[group_num++] = &fan4_attr_group; 1936 } 1937 if (data->has_pwm2) { 1938 data->groups[group_num++] = &pwm2_attr_group; 1939 } 1940 if (data->has_voltage & (1 << 0)) { 1941 data->groups[group_num++] = &in0_attr_group; 1942 } 1943 if (data->has_voltage & (1 << 3)) { 1944 data->groups[group_num++] = &in3_attr_group; 1945 } 1946 if (data->has_voltage & (1 << 4)) { 1947 data->groups[group_num++] = &in4_attr_group; 1948 } 1949 if (data->has_voltage & (1 << 5)) { 1950 data->groups[group_num++] = &in5_attr_group; 1951 } 1952 if (data->has_voltage & (1 << 6)) { 1953 data->groups[group_num++] = &in6_attr_group; 1954 } 1955 if (data->has_vid) { 1956 data->vrm = vid_which_vrm(); 1957 data->groups[group_num] = &vid_attr_group; 1958 } 1959 1960 /* register device with all the acquired attributes */ 1961 hwmon_dev = devm_hwmon_device_register_with_groups(&client->dev, 1962 client->name, data, 1963 data->groups); 1964 1965 if (IS_ERR(hwmon_dev)) { 1966 ret = PTR_ERR(hwmon_dev); 1967 return ret; 1968 } 1969 1970 dev_info(&client->dev, "%s device, revision %d\n", 1971 names[chip], revision); 1972 if ((data->has_voltage & 0x11) || data->has_fan4 || data->has_pwm2) 1973 dev_info(&client->dev, "Optional features:%s%s%s%s%s\n", 1974 (data->has_voltage & (1 << 0)) ? " in0" : "", 1975 (data->has_voltage & (1 << 4)) ? " in4" : "", 1976 data->has_fan4 ? " fan4" : "", 1977 data->has_pwm2 ? " pwm2" : "", 1978 data->has_vid ? " vid" : ""); 1979 if (data->bypass_attn) 1980 dev_info(&client->dev, "Bypassing attenuators on:%s%s%s%s\n", 1981 (data->bypass_attn & (1 << 0)) ? " in0" : "", 1982 (data->bypass_attn & (1 << 1)) ? " in1" : "", 1983 (data->bypass_attn & (1 << 3)) ? " in3" : "", 1984 (data->bypass_attn & (1 << 4)) ? " in4" : ""); 1985 1986 /* Limits and settings, should never change update more than once */ 1987 ret = adt7475_update_limits(client); 1988 if (ret) 1989 return ret; 1990 1991 return 0; 1992} 1993 1994static struct i2c_driver adt7475_driver = { 1995 .class = I2C_CLASS_HWMON, 1996 .driver = { 1997 .name = "adt7475", 1998 .of_match_table = of_match_ptr(adt7475_of_match), 1999 }, 2000 .probe = adt7475_probe, 2001 .id_table = adt7475_id, 2002 .detect = adt7475_detect, 2003 .address_list = normal_i2c, 2004}; 2005 2006static void adt7475_read_hystersis(struct i2c_client *client) 2007{ 2008 struct adt7475_data *data = i2c_get_clientdata(client); 2009 2010 data->temp[HYSTERSIS][0] = (u16) adt7475_read(REG_REMOTE1_HYSTERSIS); 2011 data->temp[HYSTERSIS][1] = data->temp[HYSTERSIS][0]; 2012 data->temp[HYSTERSIS][2] = (u16) adt7475_read(REG_REMOTE2_HYSTERSIS); 2013} 2014 2015static void adt7475_read_pwm(struct i2c_client *client, int index) 2016{ 2017 struct adt7475_data *data = i2c_get_clientdata(client); 2018 unsigned int v; 2019 2020 data->pwm[CONTROL][index] = adt7475_read(PWM_CONFIG_REG(index)); 2021 2022 /* 2023 * Figure out the internal value for pwmctrl and pwmchan 2024 * based on the current settings 2025 */ 2026 v = (data->pwm[CONTROL][index] >> 5) & 7; 2027 2028 if (v == 3) 2029 data->pwmctl[index] = 0; 2030 else if (v == 7) 2031 data->pwmctl[index] = 1; 2032 else if (v == 4) { 2033 /* 2034 * The fan is disabled - we don't want to 2035 * support that, so change to manual mode and 2036 * set the duty cycle to 0 instead 2037 */ 2038 data->pwm[INPUT][index] = 0; 2039 data->pwm[CONTROL][index] &= ~0xE0; 2040 data->pwm[CONTROL][index] |= (7 << 5); 2041 2042 i2c_smbus_write_byte_data(client, PWM_REG(index), 2043 data->pwm[INPUT][index]); 2044 2045 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index), 2046 data->pwm[CONTROL][index]); 2047 2048 data->pwmctl[index] = 1; 2049 } else { 2050 data->pwmctl[index] = 2; 2051 2052 switch (v) { 2053 case 0: 2054 data->pwmchan[index] = 1; 2055 break; 2056 case 1: 2057 data->pwmchan[index] = 2; 2058 break; 2059 case 2: 2060 data->pwmchan[index] = 4; 2061 break; 2062 case 5: 2063 data->pwmchan[index] = 6; 2064 break; 2065 case 6: 2066 data->pwmchan[index] = 7; 2067 break; 2068 } 2069 } 2070} 2071 2072static int adt7475_update_measure(struct device *dev) 2073{ 2074 struct adt7475_data *data = dev_get_drvdata(dev); 2075 struct i2c_client *client = data->client; 2076 u16 ext; 2077 int i; 2078 int ret; 2079 2080 ret = adt7475_read(REG_STATUS2); 2081 if (ret < 0) 2082 return ret; 2083 data->alarms = ret << 8; 2084 2085 ret = adt7475_read(REG_STATUS1); 2086 if (ret < 0) 2087 return ret; 2088 data->alarms |= ret; 2089 2090 ret = adt7475_read(REG_EXTEND2); 2091 if (ret < 0) 2092 return ret; 2093 2094 ext = (ret << 8); 2095 2096 ret = adt7475_read(REG_EXTEND1); 2097 if (ret < 0) 2098 return ret; 2099 2100 ext |= ret; 2101 2102 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) { 2103 if (!(data->has_voltage & (1 << i))) 2104 continue; 2105 ret = adt7475_read(VOLTAGE_REG(i)); 2106 if (ret < 0) 2107 return ret; 2108 data->voltage[INPUT][i] = 2109 (ret << 2) | 2110 ((ext >> (i * 2)) & 3); 2111 } 2112 2113 for (i = 0; i < ADT7475_TEMP_COUNT; i++) { 2114 ret = adt7475_read(TEMP_REG(i)); 2115 if (ret < 0) 2116 return ret; 2117 data->temp[INPUT][i] = 2118 (ret << 2) | 2119 ((ext >> ((i + 5) * 2)) & 3); 2120 } 2121 2122 if (data->has_voltage & (1 << 5)) { 2123 ret = adt7475_read(REG_STATUS4); 2124 if (ret < 0) 2125 return ret; 2126 data->alarms |= ret << 24; 2127 2128 ret = adt7475_read(REG_EXTEND3); 2129 if (ret < 0) 2130 return ret; 2131 ext = ret; 2132 2133 ret = adt7475_read(REG_VTT); 2134 if (ret < 0) 2135 return ret; 2136 data->voltage[INPUT][5] = ret << 2 | 2137 ((ext >> 4) & 3); 2138 } 2139 2140 if (data->has_voltage & (1 << 6)) { 2141 ret = adt7475_read(REG_STATUS4); 2142 if (ret < 0) 2143 return ret; 2144 data->alarms |= ret << 24; 2145 2146 ret = adt7475_read(REG_EXTEND3); 2147 if (ret < 0) 2148 return ret; 2149 ext = ret; 2150 2151 ret = adt7475_read(REG_IMON); 2152 if (ret < 0) 2153 return ret; 2154 data->voltage[INPUT][6] = ret << 2 | 2155 ((ext >> 6) & 3); 2156 } 2157 2158 for (i = 0; i < ADT7475_TACH_COUNT; i++) { 2159 if (i == 3 && !data->has_fan4) 2160 continue; 2161 ret = adt7475_read_word(client, TACH_REG(i)); 2162 if (ret < 0) 2163 return ret; 2164 data->tach[INPUT][i] = ret; 2165 } 2166 2167 /* Updated by hw when in auto mode */ 2168 for (i = 0; i < ADT7475_PWM_COUNT; i++) { 2169 if (i == 1 && !data->has_pwm2) 2170 continue; 2171 ret = adt7475_read(PWM_REG(i)); 2172 if (ret < 0) 2173 return ret; 2174 data->pwm[INPUT][i] = ret; 2175 } 2176 2177 if (data->has_vid) { 2178 ret = adt7475_read(REG_VID); 2179 if (ret < 0) 2180 return ret; 2181 data->vid = ret & 0x3f; 2182 } 2183 2184 return 0; 2185} 2186 2187static struct adt7475_data *adt7475_update_device(struct device *dev) 2188{ 2189 struct adt7475_data *data = dev_get_drvdata(dev); 2190 int ret; 2191 2192 mutex_lock(&data->lock); 2193 2194 /* Measurement values update every 2 seconds */ 2195 if (time_after(jiffies, data->measure_updated + HZ * 2) || 2196 !data->valid) { 2197 ret = adt7475_update_measure(dev); 2198 if (ret) { 2199 data->valid = false; 2200 mutex_unlock(&data->lock); 2201 return ERR_PTR(ret); 2202 } 2203 data->measure_updated = jiffies; 2204 data->valid = true; 2205 } 2206 2207 mutex_unlock(&data->lock); 2208 2209 return data; 2210} 2211 2212module_i2c_driver(adt7475_driver); 2213 2214MODULE_AUTHOR("Advanced Micro Devices, Inc"); 2215MODULE_DESCRIPTION("adt7475 driver"); 2216MODULE_LICENSE("GPL");
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