FILE
adv7511_drv.c
File preview with syntax highlighting.
linux-6.19.14/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
1// SPDX-License-Identifier: GPL-2.0-only 2/* 3 * Analog Devices ADV7511 HDMI transmitter driver 4 * 5 * Copyright 2012 Analog Devices Inc. 6 */ 7 8#include <linux/clk.h> 9#include <linux/device.h> 10#include <linux/gpio/consumer.h> 11#include <linux/module.h> 12#include <linux/of.h> 13#include <linux/slab.h> 14 15#include <sound/pcm.h> 16 17#include <drm/drm_atomic.h> 18#include <drm/drm_atomic_helper.h> 19#include <drm/drm_bridge_connector.h> 20#include <drm/drm_edid.h> 21#include <drm/drm_of.h> 22#include <drm/drm_print.h> 23#include <drm/drm_probe_helper.h> 24#include <drm/display/drm_hdmi_helper.h> 25#include <drm/display/drm_hdmi_state_helper.h> 26 27#include "adv7511.h" 28 29/* ADI recommended values for proper operation. */ 30static const struct reg_sequence adv7511_fixed_registers[] = { 31 { 0x98, 0x03 }, 32 { 0x9a, 0xe0 }, 33 { 0x9c, 0x30 }, 34 { 0x9d, 0x61 }, 35 { 0xa2, 0xa4 }, 36 { 0xa3, 0xa4 }, 37 { 0xe0, 0xd0 }, 38 { 0xf9, 0x00 }, 39 { 0x55, 0x02 }, 40}; 41 42/* ----------------------------------------------------------------------------- 43 * Register access 44 */ 45 46static const uint8_t adv7511_register_defaults[] = { 47 0x12, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 00 */ 48 0x00, 0x00, 0x01, 0x0e, 0xbc, 0x18, 0x01, 0x13, 49 0x25, 0x37, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 10 */ 50 0x46, 0x62, 0x04, 0xa8, 0x00, 0x00, 0x1c, 0x84, 51 0x1c, 0xbf, 0x04, 0xa8, 0x1e, 0x70, 0x02, 0x1e, /* 20 */ 52 0x00, 0x00, 0x04, 0xa8, 0x08, 0x12, 0x1b, 0xac, 53 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 30 */ 54 0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0xb0, 55 0x00, 0x50, 0x90, 0x7e, 0x79, 0x70, 0x00, 0x00, /* 40 */ 56 0x00, 0xa8, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 57 0x00, 0x00, 0x02, 0x0d, 0x00, 0x00, 0x00, 0x00, /* 50 */ 58 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 59 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 60 */ 60 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 61 0x01, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 70 */ 62 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 63 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 80 */ 64 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 65 0x00, 0x00, 0x00, 0x00, 0xc0, 0x00, 0x00, 0x00, /* 90 */ 66 0x0b, 0x02, 0x00, 0x18, 0x5a, 0x60, 0x00, 0x00, 67 0x00, 0x00, 0x80, 0x80, 0x08, 0x04, 0x00, 0x00, /* a0 */ 68 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x40, 0x14, 69 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* b0 */ 70 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 71 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* c0 */ 72 0x00, 0x03, 0x00, 0x00, 0x02, 0x00, 0x01, 0x04, 73 0x30, 0xff, 0x80, 0x80, 0x80, 0x00, 0x00, 0x00, /* d0 */ 74 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x01, 75 0x80, 0x75, 0x00, 0x00, 0x60, 0x00, 0x00, 0x00, /* e0 */ 76 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 77 0x00, 0x00, 0x00, 0x00, 0x00, 0x75, 0x11, 0x00, /* f0 */ 78 0x00, 0x7c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 79}; 80 81static bool adv7511_register_volatile(struct device *dev, unsigned int reg) 82{ 83 switch (reg) { 84 case ADV7511_REG_CHIP_REVISION: 85 case ADV7511_REG_SPDIF_FREQ: 86 case ADV7511_REG_CTS_AUTOMATIC1: 87 case ADV7511_REG_CTS_AUTOMATIC2: 88 case ADV7511_REG_VIC_DETECTED: 89 case ADV7511_REG_VIC_SEND: 90 case ADV7511_REG_AUX_VIC_DETECTED: 91 case ADV7511_REG_STATUS: 92 case ADV7511_REG_GC(1): 93 case ADV7511_REG_INT(0): 94 case ADV7511_REG_INT(1): 95 case ADV7511_REG_PLL_STATUS: 96 case ADV7511_REG_AN(0): 97 case ADV7511_REG_AN(1): 98 case ADV7511_REG_AN(2): 99 case ADV7511_REG_AN(3): 100 case ADV7511_REG_AN(4): 101 case ADV7511_REG_AN(5): 102 case ADV7511_REG_AN(6): 103 case ADV7511_REG_AN(7): 104 case ADV7511_REG_HDCP_STATUS: 105 case ADV7511_REG_BCAPS: 106 case ADV7511_REG_BKSV(0): 107 case ADV7511_REG_BKSV(1): 108 case ADV7511_REG_BKSV(2): 109 case ADV7511_REG_BKSV(3): 110 case ADV7511_REG_BKSV(4): 111 case ADV7511_REG_DDC_STATUS: 112 case ADV7511_REG_EDID_READ_CTRL: 113 case ADV7511_REG_BSTATUS(0): 114 case ADV7511_REG_BSTATUS(1): 115 case ADV7511_REG_CHIP_ID_HIGH: 116 case ADV7511_REG_CHIP_ID_LOW: 117 return true; 118 } 119 120 return false; 121} 122 123static const struct regmap_config adv7511_regmap_config = { 124 .reg_bits = 8, 125 .val_bits = 8, 126 127 .max_register = 0xff, 128 .cache_type = REGCACHE_MAPLE, 129 .reg_defaults_raw = adv7511_register_defaults, 130 .num_reg_defaults_raw = ARRAY_SIZE(adv7511_register_defaults), 131 132 .volatile_reg = adv7511_register_volatile, 133}; 134 135static const struct regmap_config adv7511_packet_config = { 136 .reg_bits = 8, 137 .val_bits = 8, 138 139 .max_register = 0xff, 140}; 141 142/* ----------------------------------------------------------------------------- 143 * Hardware configuration 144 */ 145 146static void adv7511_set_colormap(struct adv7511 *adv7511, bool enable, 147 const uint16_t *coeff, 148 unsigned int scaling_factor) 149{ 150 unsigned int i; 151 152 regmap_update_bits(adv7511->regmap, ADV7511_REG_CSC_UPPER(1), 153 ADV7511_CSC_UPDATE_MODE, ADV7511_CSC_UPDATE_MODE); 154 155 if (enable) { 156 for (i = 0; i < 12; ++i) { 157 regmap_update_bits(adv7511->regmap, 158 ADV7511_REG_CSC_UPPER(i), 159 0x1f, coeff[i] >> 8); 160 regmap_write(adv7511->regmap, 161 ADV7511_REG_CSC_LOWER(i), 162 coeff[i] & 0xff); 163 } 164 } 165 166 if (enable) 167 regmap_update_bits(adv7511->regmap, ADV7511_REG_CSC_UPPER(0), 168 0xe0, 0x80 | (scaling_factor << 5)); 169 else 170 regmap_update_bits(adv7511->regmap, ADV7511_REG_CSC_UPPER(0), 171 0x80, 0x00); 172 173 regmap_update_bits(adv7511->regmap, ADV7511_REG_CSC_UPPER(1), 174 ADV7511_CSC_UPDATE_MODE, 0); 175} 176 177static int adv7511_packet_enable(struct adv7511 *adv7511, unsigned int packet) 178{ 179 if (packet & 0xff) 180 regmap_update_bits(adv7511->regmap, ADV7511_REG_PACKET_ENABLE0, 181 packet, 0xff); 182 183 if (packet & 0xff00) { 184 packet >>= 8; 185 regmap_update_bits(adv7511->regmap, ADV7511_REG_PACKET_ENABLE1, 186 packet, 0xff); 187 } 188 189 return 0; 190} 191 192static int adv7511_packet_disable(struct adv7511 *adv7511, unsigned int packet) 193{ 194 if (packet & 0xff) 195 regmap_update_bits(adv7511->regmap, ADV7511_REG_PACKET_ENABLE0, 196 packet, 0x00); 197 198 if (packet & 0xff00) { 199 packet >>= 8; 200 regmap_update_bits(adv7511->regmap, ADV7511_REG_PACKET_ENABLE1, 201 packet, 0x00); 202 } 203 204 return 0; 205} 206 207/* Coefficients for adv7511 color space conversion */ 208static const uint16_t adv7511_csc_ycbcr_to_rgb[] = { 209 0x0734, 0x04ad, 0x0000, 0x1c1b, 210 0x1ddc, 0x04ad, 0x1f24, 0x0135, 211 0x0000, 0x04ad, 0x087c, 0x1b77, 212}; 213 214static void adv7511_set_config_csc(struct adv7511 *adv7511, 215 struct drm_connector *connector, 216 bool rgb) 217{ 218 struct adv7511_video_config config; 219 bool output_format_422, output_format_ycbcr; 220 unsigned int mode; 221 222 if (rgb) { 223 config.csc_enable = false; 224 output_format_422 = false; 225 output_format_ycbcr = false; 226 } else { 227 config.csc_scaling_factor = ADV7511_CSC_SCALING_4; 228 config.csc_coefficents = adv7511_csc_ycbcr_to_rgb; 229 230 if ((connector->display_info.color_formats & 231 DRM_COLOR_FORMAT_YCBCR422) && 232 connector->display_info.is_hdmi) { 233 config.csc_enable = false; 234 output_format_422 = true; 235 output_format_ycbcr = true; 236 } else { 237 config.csc_enable = true; 238 output_format_422 = false; 239 output_format_ycbcr = false; 240 } 241 } 242 243 if (connector->display_info.is_hdmi) 244 mode = ADV7511_HDMI_CFG_MODE_HDMI; 245 else 246 mode = ADV7511_HDMI_CFG_MODE_DVI; 247 248 adv7511_set_colormap(adv7511, config.csc_enable, 249 config.csc_coefficents, 250 config.csc_scaling_factor); 251 252 regmap_update_bits(adv7511->regmap, ADV7511_REG_VIDEO_INPUT_CFG1, 0x81, 253 (output_format_422 << 7) | output_format_ycbcr); 254 255 regmap_update_bits(adv7511->regmap, ADV7511_REG_HDCP_HDMI_CFG, 256 ADV7511_HDMI_CFG_MODE_MASK, mode); 257} 258 259static void adv7511_set_link_config(struct adv7511 *adv7511, 260 const struct adv7511_link_config *config) 261{ 262 /* 263 * The input style values documented in the datasheet don't match the 264 * hardware register field values :-( 265 */ 266 static const unsigned int input_styles[4] = { 0, 2, 1, 3 }; 267 268 unsigned int clock_delay; 269 unsigned int color_depth; 270 unsigned int input_id; 271 272 clock_delay = (config->clock_delay + 1200) / 400; 273 color_depth = config->input_color_depth == 8 ? 3 274 : (config->input_color_depth == 10 ? 1 : 2); 275 276 /* TODO Support input ID 6 */ 277 if (config->input_colorspace != HDMI_COLORSPACE_YUV422) 278 input_id = config->input_clock == ADV7511_INPUT_CLOCK_DDR 279 ? 5 : 0; 280 else if (config->input_clock == ADV7511_INPUT_CLOCK_DDR) 281 input_id = config->embedded_sync ? 8 : 7; 282 else if (config->input_clock == ADV7511_INPUT_CLOCK_2X) 283 input_id = config->embedded_sync ? 4 : 3; 284 else 285 input_id = config->embedded_sync ? 2 : 1; 286 287 regmap_update_bits(adv7511->regmap, ADV7511_REG_I2C_FREQ_ID_CFG, 0xf, 288 input_id); 289 regmap_update_bits(adv7511->regmap, ADV7511_REG_VIDEO_INPUT_CFG1, 0x7e, 290 (color_depth << 4) | 291 (input_styles[config->input_style] << 2)); 292 regmap_write(adv7511->regmap, ADV7511_REG_VIDEO_INPUT_CFG2, 293 config->input_justification << 3); 294 regmap_write(adv7511->regmap, ADV7511_REG_TIMING_GEN_SEQ, 295 config->sync_pulse << 2); 296 297 regmap_write(adv7511->regmap, 0xba, clock_delay << 5); 298 299 adv7511->embedded_sync = config->embedded_sync; 300 adv7511->hsync_polarity = config->hsync_polarity; 301 adv7511->vsync_polarity = config->vsync_polarity; 302 adv7511->rgb = config->input_colorspace == HDMI_COLORSPACE_RGB; 303} 304 305static void __adv7511_power_on(struct adv7511 *adv7511) 306{ 307 adv7511->current_edid_segment = -1; 308 309 regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER, 310 ADV7511_POWER_POWER_DOWN, 0); 311 if (adv7511->i2c_main->irq) { 312 /* 313 * Documentation says the INT_ENABLE registers are reset in 314 * POWER_DOWN mode. My 7511w preserved the bits, however. 315 * Still, let's be safe and stick to the documentation. 316 */ 317 regmap_write(adv7511->regmap, ADV7511_REG_INT_ENABLE(0), 318 ADV7511_INT0_EDID_READY | ADV7511_INT0_HPD); 319 regmap_update_bits(adv7511->regmap, 320 ADV7511_REG_INT_ENABLE(1), 321 ADV7511_INT1_DDC_ERROR, 322 ADV7511_INT1_DDC_ERROR); 323 } 324 325 /* 326 * Per spec it is allowed to pulse the HPD signal to indicate that the 327 * EDID information has changed. Some monitors do this when they wakeup 328 * from standby or are enabled. When the HPD goes low the adv7511 is 329 * reset and the outputs are disabled which might cause the monitor to 330 * go to standby again. To avoid this we ignore the HPD pin for the 331 * first few seconds after enabling the output. On the other hand 332 * adv7535 require to enable HPD Override bit for proper HPD. 333 */ 334 if (adv7511->info->hpd_override_enable) 335 regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2, 336 ADV7535_REG_POWER2_HPD_OVERRIDE, 337 ADV7535_REG_POWER2_HPD_OVERRIDE); 338 else 339 regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2, 340 ADV7511_REG_POWER2_HPD_SRC_MASK, 341 ADV7511_REG_POWER2_HPD_SRC_NONE); 342} 343 344static void adv7511_power_on(struct adv7511 *adv7511) 345{ 346 __adv7511_power_on(adv7511); 347 348 /* 349 * Most of the registers are reset during power down or when HPD is low. 350 */ 351 regcache_sync(adv7511->regmap); 352 353 if (adv7511->info->has_dsi) 354 adv7533_dsi_power_on(adv7511); 355 adv7511->powered = true; 356} 357 358static void __adv7511_power_off(struct adv7511 *adv7511) 359{ 360 /* TODO: setup additional power down modes */ 361 if (adv7511->info->hpd_override_enable) 362 regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2, 363 ADV7535_REG_POWER2_HPD_OVERRIDE, 0); 364 365 regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER, 366 ADV7511_POWER_POWER_DOWN, 367 ADV7511_POWER_POWER_DOWN); 368 regmap_update_bits(adv7511->regmap, 369 ADV7511_REG_INT_ENABLE(1), 370 ADV7511_INT1_DDC_ERROR, 0); 371 regcache_mark_dirty(adv7511->regmap); 372} 373 374static void adv7511_power_off(struct adv7511 *adv7511) 375{ 376 __adv7511_power_off(adv7511); 377 if (adv7511->info->has_dsi) 378 adv7533_dsi_power_off(adv7511); 379 adv7511->powered = false; 380} 381 382/* ----------------------------------------------------------------------------- 383 * Interrupt and hotplug detection 384 */ 385 386static bool adv7511_hpd(struct adv7511 *adv7511) 387{ 388 unsigned int irq0; 389 int ret; 390 391 ret = regmap_read(adv7511->regmap, ADV7511_REG_INT(0), &irq0); 392 if (ret < 0) 393 return false; 394 395 if (irq0 & ADV7511_INT0_HPD) { 396 regmap_write(adv7511->regmap, ADV7511_REG_INT(0), 397 ADV7511_INT0_HPD); 398 return true; 399 } 400 401 return false; 402} 403 404static void adv7511_hpd_work(struct work_struct *work) 405{ 406 struct adv7511 *adv7511 = container_of(work, struct adv7511, hpd_work); 407 enum drm_connector_status status; 408 unsigned int val; 409 int ret; 410 411 ret = regmap_read(adv7511->regmap, ADV7511_REG_STATUS, &val); 412 if (ret < 0) 413 status = connector_status_disconnected; 414 else if (val & ADV7511_STATUS_HPD) 415 status = connector_status_connected; 416 else 417 status = connector_status_disconnected; 418 419 /* 420 * The bridge resets its registers on unplug. So when we get a plug 421 * event and we're already supposed to be powered, cycle the bridge to 422 * restore its state. 423 */ 424 if (status == connector_status_connected && 425 adv7511->status == connector_status_disconnected && 426 adv7511->powered) { 427 regcache_mark_dirty(adv7511->regmap); 428 adv7511_power_on(adv7511); 429 } 430 431 if (adv7511->status != status) { 432 adv7511->status = status; 433 434 drm_bridge_hpd_notify(&adv7511->bridge, status); 435 } 436} 437 438static int adv7511_irq_process(struct adv7511 *adv7511, bool process_hpd) 439{ 440 unsigned int irq0, irq1; 441 int ret; 442 int cec_status = IRQ_NONE; 443 int irq_status = IRQ_NONE; 444 445 ret = regmap_read(adv7511->regmap, ADV7511_REG_INT(0), &irq0); 446 if (ret < 0) 447 return ret; 448 449 ret = regmap_read(adv7511->regmap, ADV7511_REG_INT(1), &irq1); 450 if (ret < 0) 451 return ret; 452 453 regmap_write(adv7511->regmap, ADV7511_REG_INT(0), irq0); 454 regmap_write(adv7511->regmap, ADV7511_REG_INT(1), irq1); 455 456 if (process_hpd && irq0 & ADV7511_INT0_HPD && adv7511->bridge.encoder) { 457 schedule_work(&adv7511->hpd_work); 458 irq_status = IRQ_HANDLED; 459 } 460 461 if (irq0 & ADV7511_INT0_EDID_READY || irq1 & ADV7511_INT1_DDC_ERROR) { 462 adv7511->edid_read = true; 463 464 if (adv7511->i2c_main->irq) 465 wake_up_all(&adv7511->wq); 466 irq_status = IRQ_HANDLED; 467 } 468 469#ifdef CONFIG_DRM_I2C_ADV7511_CEC 470 cec_status = adv7511_cec_irq_process(adv7511, irq1); 471#endif 472 473 /* If there is no IRQ to handle, exit indicating no IRQ data */ 474 if (irq_status == IRQ_HANDLED || cec_status == IRQ_HANDLED) 475 return IRQ_HANDLED; 476 477 return IRQ_NONE; 478} 479 480static irqreturn_t adv7511_irq_handler(int irq, void *devid) 481{ 482 struct adv7511 *adv7511 = devid; 483 int ret; 484 485 ret = adv7511_irq_process(adv7511, true); 486 return ret < 0 ? IRQ_NONE : ret; 487} 488 489/* ----------------------------------------------------------------------------- 490 * EDID retrieval 491 */ 492 493static int adv7511_wait_for_edid(struct adv7511 *adv7511, int timeout) 494{ 495 int ret; 496 497 if (adv7511->i2c_main->irq) { 498 ret = wait_event_interruptible_timeout(adv7511->wq, 499 adv7511->edid_read, msecs_to_jiffies(timeout)); 500 } else { 501 for (; timeout > 0; timeout -= 25) { 502 ret = adv7511_irq_process(adv7511, false); 503 if (ret < 0) 504 break; 505 506 if (adv7511->edid_read) 507 break; 508 509 msleep(25); 510 } 511 } 512 513 return adv7511->edid_read ? 0 : -EIO; 514} 515 516static int adv7511_get_edid_block(void *data, u8 *buf, unsigned int block, 517 size_t len) 518{ 519 struct adv7511 *adv7511 = data; 520 struct i2c_msg xfer[2]; 521 uint8_t offset; 522 unsigned int i; 523 int ret; 524 525 if (len > 128) 526 return -EINVAL; 527 528 if (adv7511->current_edid_segment != block / 2) { 529 unsigned int status; 530 531 ret = regmap_read(adv7511->regmap, ADV7511_REG_DDC_STATUS, 532 &status); 533 if (ret < 0) 534 return ret; 535 536 if (status != 2) { 537 adv7511->edid_read = false; 538 regmap_write(adv7511->regmap, ADV7511_REG_EDID_SEGMENT, 539 block); 540 ret = adv7511_wait_for_edid(adv7511, 200); 541 if (ret < 0) 542 return ret; 543 } 544 545 /* Break this apart, hopefully more I2C controllers will 546 * support 64 byte transfers than 256 byte transfers 547 */ 548 549 xfer[0].addr = adv7511->i2c_edid->addr; 550 xfer[0].flags = 0; 551 xfer[0].len = 1; 552 xfer[0].buf = &offset; 553 xfer[1].addr = adv7511->i2c_edid->addr; 554 xfer[1].flags = I2C_M_RD; 555 xfer[1].len = 64; 556 xfer[1].buf = adv7511->edid_buf; 557 558 offset = 0; 559 560 for (i = 0; i < 4; ++i) { 561 ret = i2c_transfer(adv7511->i2c_edid->adapter, xfer, 562 ARRAY_SIZE(xfer)); 563 if (ret < 0) 564 return ret; 565 else if (ret != 2) 566 return -EIO; 567 568 xfer[1].buf += 64; 569 offset += 64; 570 } 571 572 adv7511->current_edid_segment = block / 2; 573 } 574 575 if (block % 2 == 0) 576 memcpy(buf, adv7511->edid_buf, len); 577 else 578 memcpy(buf, adv7511->edid_buf + 128, len); 579 580 return 0; 581} 582 583/* ----------------------------------------------------------------------------- 584 * ADV75xx helpers 585 */ 586 587static const struct drm_edid *adv7511_edid_read(struct adv7511 *adv7511, 588 struct drm_connector *connector) 589{ 590 const struct drm_edid *drm_edid; 591 592 /* Reading the EDID only works if the device is powered */ 593 if (!adv7511->powered) { 594 unsigned int edid_i2c_addr = 595 (adv7511->i2c_edid->addr << 1); 596 597 __adv7511_power_on(adv7511); 598 599 /* Reset the EDID_I2C_ADDR register as it might be cleared */ 600 regmap_write(adv7511->regmap, ADV7511_REG_EDID_I2C_ADDR, 601 edid_i2c_addr); 602 } 603 604 drm_edid = drm_edid_read_custom(connector, adv7511_get_edid_block, adv7511); 605 606 if (!adv7511->powered) 607 __adv7511_power_off(adv7511); 608 609 return drm_edid; 610} 611 612static enum drm_connector_status 613adv7511_detect(struct adv7511 *adv7511) 614{ 615 enum drm_connector_status status; 616 unsigned int val; 617 bool hpd; 618 int ret; 619 620 ret = regmap_read(adv7511->regmap, ADV7511_REG_STATUS, &val); 621 if (ret < 0) 622 return connector_status_disconnected; 623 624 if (val & ADV7511_STATUS_HPD) 625 status = connector_status_connected; 626 else 627 status = connector_status_disconnected; 628 629 hpd = adv7511_hpd(adv7511); 630 631 /* The chip resets itself when the cable is disconnected, so in case 632 * there is a pending HPD interrupt and the cable is connected there was 633 * at least one transition from disconnected to connected and the chip 634 * has to be reinitialized. */ 635 if (status == connector_status_connected && hpd && adv7511->powered) { 636 regcache_mark_dirty(adv7511->regmap); 637 adv7511_power_on(adv7511); 638 if (adv7511->status == connector_status_connected) 639 status = connector_status_disconnected; 640 } else { 641 /* Renable HPD sensing */ 642 if (adv7511->info->hpd_override_enable) 643 regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2, 644 ADV7535_REG_POWER2_HPD_OVERRIDE, 645 ADV7535_REG_POWER2_HPD_OVERRIDE); 646 else 647 regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2, 648 ADV7511_REG_POWER2_HPD_SRC_MASK, 649 ADV7511_REG_POWER2_HPD_SRC_BOTH); 650 } 651 652 adv7511->status = status; 653 return status; 654} 655 656static void adv7511_mode_set(struct adv7511 *adv7511, 657 const struct drm_display_mode *adj_mode) 658{ 659 unsigned int low_refresh_rate; 660 unsigned int hsync_polarity = 0; 661 unsigned int vsync_polarity = 0; 662 663 if (adv7511->embedded_sync) { 664 unsigned int hsync_offset, hsync_len; 665 unsigned int vsync_offset, vsync_len; 666 667 hsync_offset = adj_mode->crtc_hsync_start - 668 adj_mode->crtc_hdisplay; 669 vsync_offset = adj_mode->crtc_vsync_start - 670 adj_mode->crtc_vdisplay; 671 hsync_len = adj_mode->crtc_hsync_end - 672 adj_mode->crtc_hsync_start; 673 vsync_len = adj_mode->crtc_vsync_end - 674 adj_mode->crtc_vsync_start; 675 676 /* The hardware vsync generator has a off-by-one bug */ 677 vsync_offset += 1; 678 679 regmap_write(adv7511->regmap, ADV7511_REG_HSYNC_PLACEMENT_MSB, 680 ((hsync_offset >> 10) & 0x7) << 5); 681 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(0), 682 (hsync_offset >> 2) & 0xff); 683 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(1), 684 ((hsync_offset & 0x3) << 6) | 685 ((hsync_len >> 4) & 0x3f)); 686 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(2), 687 ((hsync_len & 0xf) << 4) | 688 ((vsync_offset >> 6) & 0xf)); 689 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(3), 690 ((vsync_offset & 0x3f) << 2) | 691 ((vsync_len >> 8) & 0x3)); 692 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(4), 693 vsync_len & 0xff); 694 695 hsync_polarity = !(adj_mode->flags & DRM_MODE_FLAG_PHSYNC); 696 vsync_polarity = !(adj_mode->flags & DRM_MODE_FLAG_PVSYNC); 697 } else { 698 enum adv7511_sync_polarity mode_hsync_polarity; 699 enum adv7511_sync_polarity mode_vsync_polarity; 700 701 /** 702 * If the input signal is always low or always high we want to 703 * invert or let it passthrough depending on the polarity of the 704 * current mode. 705 **/ 706 if (adj_mode->flags & DRM_MODE_FLAG_NHSYNC) 707 mode_hsync_polarity = ADV7511_SYNC_POLARITY_LOW; 708 else 709 mode_hsync_polarity = ADV7511_SYNC_POLARITY_HIGH; 710 711 if (adj_mode->flags & DRM_MODE_FLAG_NVSYNC) 712 mode_vsync_polarity = ADV7511_SYNC_POLARITY_LOW; 713 else 714 mode_vsync_polarity = ADV7511_SYNC_POLARITY_HIGH; 715 716 if (adv7511->hsync_polarity != mode_hsync_polarity && 717 adv7511->hsync_polarity != 718 ADV7511_SYNC_POLARITY_PASSTHROUGH) 719 hsync_polarity = 1; 720 721 if (adv7511->vsync_polarity != mode_vsync_polarity && 722 adv7511->vsync_polarity != 723 ADV7511_SYNC_POLARITY_PASSTHROUGH) 724 vsync_polarity = 1; 725 } 726 727 if (drm_mode_vrefresh(adj_mode) <= 24) 728 low_refresh_rate = ADV7511_LOW_REFRESH_RATE_24HZ; 729 else if (drm_mode_vrefresh(adj_mode) <= 25) 730 low_refresh_rate = ADV7511_LOW_REFRESH_RATE_25HZ; 731 else if (drm_mode_vrefresh(adj_mode) <= 30) 732 low_refresh_rate = ADV7511_LOW_REFRESH_RATE_30HZ; 733 else 734 low_refresh_rate = ADV7511_LOW_REFRESH_RATE_NONE; 735 736 if (adv7511->info->type == ADV7511) 737 regmap_update_bits(adv7511->regmap, 0xfb, 738 0x6, low_refresh_rate << 1); 739 else 740 regmap_update_bits(adv7511->regmap, 0x4a, 741 0xc, low_refresh_rate << 2); 742 743 regmap_update_bits(adv7511->regmap, 0x17, 744 0x60, (vsync_polarity << 6) | (hsync_polarity << 5)); 745 746 drm_mode_copy(&adv7511->curr_mode, adj_mode); 747 748 /* Update horizontal/vertical porch params */ 749 if (adv7511->info->has_dsi && adv7511->use_timing_gen) 750 adv7533_dsi_config_timing_gen(adv7511); 751 752 /* 753 * TODO Test first order 4:2:2 to 4:4:4 up conversion method, which is 754 * supposed to give better results. 755 */ 756 757 adv7511->f_tmds = adj_mode->clock; 758} 759 760static int adv7511_connector_init(struct adv7511 *adv) 761{ 762 struct drm_bridge *bridge = &adv->bridge; 763 struct drm_connector *connector; 764 765 connector = drm_bridge_connector_init(bridge->dev, bridge->encoder); 766 if (IS_ERR(connector)) { 767 DRM_ERROR("Failed to initialize connector with drm\n"); 768 return PTR_ERR(connector); 769 } 770 771 drm_connector_attach_encoder(connector, bridge->encoder); 772 773 return 0; 774} 775 776/* ----------------------------------------------------------------------------- 777 * DRM Bridge Operations 778 */ 779 780static const struct adv7511 *bridge_to_adv7511_const(const struct drm_bridge *bridge) 781{ 782 return container_of(bridge, struct adv7511, bridge); 783} 784 785static void adv7511_bridge_atomic_enable(struct drm_bridge *bridge, 786 struct drm_atomic_state *state) 787{ 788 struct adv7511 *adv = bridge_to_adv7511(bridge); 789 struct drm_connector *connector; 790 struct drm_connector_state *conn_state; 791 struct drm_crtc_state *crtc_state; 792 793 adv7511_power_on(adv); 794 795 connector = drm_atomic_get_new_connector_for_encoder(state, bridge->encoder); 796 if (WARN_ON(!connector)) 797 return; 798 799 conn_state = drm_atomic_get_new_connector_state(state, connector); 800 if (WARN_ON(!conn_state)) 801 return; 802 803 crtc_state = drm_atomic_get_new_crtc_state(state, conn_state->crtc); 804 if (WARN_ON(!crtc_state)) 805 return; 806 807 adv7511_set_config_csc(adv, connector, adv->rgb); 808 809 adv7511_mode_set(adv, &crtc_state->adjusted_mode); 810 811 drm_atomic_helper_connector_hdmi_update_infoframes(connector, state); 812} 813 814static void adv7511_bridge_atomic_disable(struct drm_bridge *bridge, 815 struct drm_atomic_state *state) 816{ 817 struct adv7511 *adv = bridge_to_adv7511(bridge); 818 819 adv7511_power_off(adv); 820} 821 822static enum drm_mode_status 823adv7511_bridge_hdmi_tmds_char_rate_valid(const struct drm_bridge *bridge, 824 const struct drm_display_mode *mode, 825 unsigned long long tmds_rate) 826{ 827 const struct adv7511 *adv = bridge_to_adv7511_const(bridge); 828 829 if (tmds_rate > 1000ULL * adv->info->max_mode_clock_khz) 830 return MODE_CLOCK_HIGH; 831 832 return MODE_OK; 833} 834 835static enum drm_mode_status adv7511_bridge_mode_valid(struct drm_bridge *bridge, 836 const struct drm_display_info *info, 837 const struct drm_display_mode *mode) 838{ 839 struct adv7511 *adv = bridge_to_adv7511(bridge); 840 841 if (!adv->info->has_dsi) 842 return MODE_OK; 843 844 return adv7533_mode_valid(adv, mode); 845} 846 847static int adv7511_bridge_attach(struct drm_bridge *bridge, 848 struct drm_encoder *encoder, 849 enum drm_bridge_attach_flags flags) 850{ 851 struct adv7511 *adv = bridge_to_adv7511(bridge); 852 int ret = 0; 853 854 if (adv->next_bridge) { 855 ret = drm_bridge_attach(encoder, adv->next_bridge, bridge, 856 flags | DRM_BRIDGE_ATTACH_NO_CONNECTOR); 857 if (ret) 858 return ret; 859 } 860 861 if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) { 862 ret = adv7511_connector_init(adv); 863 if (ret < 0) 864 return ret; 865 } 866 867 if (adv->i2c_main->irq) 868 regmap_write(adv->regmap, ADV7511_REG_INT_ENABLE(0), 869 ADV7511_INT0_HPD); 870 871 return ret; 872} 873 874static enum drm_connector_status 875adv7511_bridge_detect(struct drm_bridge *bridge, struct drm_connector *connector) 876{ 877 struct adv7511 *adv = bridge_to_adv7511(bridge); 878 879 return adv7511_detect(adv); 880} 881 882static const struct drm_edid *adv7511_bridge_edid_read(struct drm_bridge *bridge, 883 struct drm_connector *connector) 884{ 885 struct adv7511 *adv = bridge_to_adv7511(bridge); 886 887 return adv7511_edid_read(adv, connector); 888} 889 890static int adv7511_bridge_hdmi_clear_infoframe(struct drm_bridge *bridge, 891 enum hdmi_infoframe_type type) 892{ 893 struct adv7511 *adv7511 = bridge_to_adv7511(bridge); 894 895 switch (type) { 896 case HDMI_INFOFRAME_TYPE_AUDIO: 897 adv7511_packet_disable(adv7511, ADV7511_PACKET_ENABLE_AUDIO_INFOFRAME); 898 break; 899 case HDMI_INFOFRAME_TYPE_AVI: 900 adv7511_packet_disable(adv7511, ADV7511_PACKET_ENABLE_AVI_INFOFRAME); 901 break; 902 case HDMI_INFOFRAME_TYPE_SPD: 903 adv7511_packet_disable(adv7511, ADV7511_PACKET_ENABLE_SPD); 904 break; 905 case HDMI_INFOFRAME_TYPE_VENDOR: 906 adv7511_packet_disable(adv7511, ADV7511_PACKET_ENABLE_SPARE1); 907 break; 908 default: 909 drm_dbg_driver(adv7511->bridge.dev, "Unsupported HDMI InfoFrame %x\n", type); 910 break; 911 } 912 913 return 0; 914} 915 916static int adv7511_bridge_hdmi_write_infoframe(struct drm_bridge *bridge, 917 enum hdmi_infoframe_type type, 918 const u8 *buffer, size_t len) 919{ 920 struct adv7511 *adv7511 = bridge_to_adv7511(bridge); 921 922 switch (type) { 923 case HDMI_INFOFRAME_TYPE_AUDIO: 924 /* send current Audio infoframe values while updating */ 925 regmap_update_bits(adv7511->regmap, ADV7511_REG_INFOFRAME_UPDATE, 926 BIT(5), BIT(5)); 927 928 /* The Audio infoframe id is not configurable */ 929 regmap_bulk_write(adv7511->regmap, ADV7511_REG_AUDIO_INFOFRAME_VERSION, 930 buffer + 1, len - 1); 931 932 /* use Audio infoframe updated info */ 933 regmap_update_bits(adv7511->regmap, ADV7511_REG_INFOFRAME_UPDATE, 934 BIT(5), 0); 935 936 adv7511_packet_enable(adv7511, ADV7511_PACKET_ENABLE_AUDIO_INFOFRAME); 937 break; 938 case HDMI_INFOFRAME_TYPE_AVI: 939 /* send current AVI infoframe values while updating */ 940 regmap_update_bits(adv7511->regmap, ADV7511_REG_INFOFRAME_UPDATE, 941 BIT(6), BIT(6)); 942 943 /* The AVI infoframe id is not configurable */ 944 regmap_bulk_write(adv7511->regmap, ADV7511_REG_AVI_INFOFRAME_VERSION, 945 buffer + 1, len - 1); 946 947 regmap_write(adv7511->regmap, ADV7511_REG_AUDIO_INFOFRAME_LENGTH, 0x2); 948 regmap_write(adv7511->regmap, ADV7511_REG_AUDIO_INFOFRAME(1), 0x1); 949 950 /* use AVI infoframe updated info */ 951 regmap_update_bits(adv7511->regmap, ADV7511_REG_INFOFRAME_UPDATE, 952 BIT(6), 0); 953 954 adv7511_packet_enable(adv7511, ADV7511_PACKET_ENABLE_AVI_INFOFRAME); 955 break; 956 case HDMI_INFOFRAME_TYPE_SPD: 957 adv7511_packet_disable(adv7511, ADV7511_PACKET_ENABLE_SPD); 958 regmap_bulk_write(adv7511->regmap_packet, ADV7511_PACKET_SPD(0), 959 buffer, len); 960 adv7511_packet_enable(adv7511, ADV7511_PACKET_ENABLE_SPD); 961 break; 962 case HDMI_INFOFRAME_TYPE_VENDOR: 963 adv7511_packet_disable(adv7511, ADV7511_PACKET_ENABLE_SPARE1); 964 regmap_bulk_write(adv7511->regmap_packet, ADV7511_PACKET_SPARE1(0), 965 buffer, len); 966 adv7511_packet_enable(adv7511, ADV7511_PACKET_ENABLE_SPARE1); 967 break; 968 default: 969 drm_dbg_driver(adv7511->bridge.dev, "Unsupported HDMI InfoFrame %x\n", type); 970 break; 971 } 972 973 return 0; 974} 975 976static const struct drm_bridge_funcs adv7511_bridge_funcs = { 977 .mode_valid = adv7511_bridge_mode_valid, 978 .attach = adv7511_bridge_attach, 979 .detect = adv7511_bridge_detect, 980 .edid_read = adv7511_bridge_edid_read, 981 982 .atomic_enable = adv7511_bridge_atomic_enable, 983 .atomic_disable = adv7511_bridge_atomic_disable, 984 .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state, 985 .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state, 986 .atomic_reset = drm_atomic_helper_bridge_reset, 987 988 .hdmi_tmds_char_rate_valid = adv7511_bridge_hdmi_tmds_char_rate_valid, 989 .hdmi_clear_infoframe = adv7511_bridge_hdmi_clear_infoframe, 990 .hdmi_write_infoframe = adv7511_bridge_hdmi_write_infoframe, 991 992 .hdmi_audio_startup = adv7511_hdmi_audio_startup, 993 .hdmi_audio_prepare = adv7511_hdmi_audio_prepare, 994 .hdmi_audio_shutdown = adv7511_hdmi_audio_shutdown, 995 996 .hdmi_cec_init = adv7511_cec_init, 997 .hdmi_cec_enable = adv7511_cec_enable, 998 .hdmi_cec_log_addr = adv7511_cec_log_addr, 999 .hdmi_cec_transmit = adv7511_cec_transmit, 1000}; 1001 1002/* ----------------------------------------------------------------------------- 1003 * Probe & remove 1004 */ 1005 1006static const char * const adv7511_supply_names[] = { 1007 "avdd", 1008 "dvdd", 1009 "pvdd", 1010 "bgvdd", 1011 "dvdd-3v", 1012}; 1013 1014static const char * const adv7533_supply_names[] = { 1015 "avdd", 1016 "dvdd", 1017 "pvdd", 1018 "a2vdd", 1019 "v3p3", 1020 "v1p2", 1021}; 1022 1023static int adv7511_init_regulators(struct adv7511 *adv) 1024{ 1025 const char * const *supply_names = adv->info->supply_names; 1026 unsigned int num_supplies = adv->info->num_supplies; 1027 struct device *dev = &adv->i2c_main->dev; 1028 unsigned int i; 1029 int ret; 1030 1031 adv->supplies = devm_kcalloc(dev, num_supplies, 1032 sizeof(*adv->supplies), GFP_KERNEL); 1033 if (!adv->supplies) 1034 return -ENOMEM; 1035 1036 for (i = 0; i < num_supplies; i++) 1037 adv->supplies[i].supply = supply_names[i]; 1038 1039 ret = devm_regulator_bulk_get(dev, num_supplies, adv->supplies); 1040 if (ret) 1041 return ret; 1042 1043 return regulator_bulk_enable(num_supplies, adv->supplies); 1044} 1045 1046static void adv7511_uninit_regulators(struct adv7511 *adv) 1047{ 1048 regulator_bulk_disable(adv->info->num_supplies, adv->supplies); 1049} 1050 1051static bool adv7511_cec_register_volatile(struct device *dev, unsigned int reg) 1052{ 1053 struct i2c_client *i2c = to_i2c_client(dev); 1054 struct adv7511 *adv7511 = i2c_get_clientdata(i2c); 1055 1056 reg -= adv7511->info->reg_cec_offset; 1057 1058 switch (reg) { 1059 case ADV7511_REG_CEC_RX1_FRAME_HDR: 1060 case ADV7511_REG_CEC_RX1_FRAME_DATA0 ... ADV7511_REG_CEC_RX1_FRAME_DATA0 + 14: 1061 case ADV7511_REG_CEC_RX1_FRAME_LEN: 1062 case ADV7511_REG_CEC_RX2_FRAME_HDR: 1063 case ADV7511_REG_CEC_RX2_FRAME_DATA0 ... ADV7511_REG_CEC_RX2_FRAME_DATA0 + 14: 1064 case ADV7511_REG_CEC_RX2_FRAME_LEN: 1065 case ADV7511_REG_CEC_RX3_FRAME_HDR: 1066 case ADV7511_REG_CEC_RX3_FRAME_DATA0 ... ADV7511_REG_CEC_RX3_FRAME_DATA0 + 14: 1067 case ADV7511_REG_CEC_RX3_FRAME_LEN: 1068 case ADV7511_REG_CEC_RX_STATUS: 1069 case ADV7511_REG_CEC_RX_BUFFERS: 1070 case ADV7511_REG_CEC_TX_LOW_DRV_CNT: 1071 return true; 1072 } 1073 1074 return false; 1075} 1076 1077static const struct regmap_config adv7511_cec_regmap_config = { 1078 .reg_bits = 8, 1079 .val_bits = 8, 1080 1081 .max_register = 0xff, 1082 .cache_type = REGCACHE_MAPLE, 1083 .volatile_reg = adv7511_cec_register_volatile, 1084}; 1085 1086static int adv7511_init_cec_regmap(struct adv7511 *adv) 1087{ 1088 int ret; 1089 1090 adv->i2c_cec = i2c_new_ancillary_device(adv->i2c_main, "cec", 1091 ADV7511_CEC_I2C_ADDR_DEFAULT); 1092 if (IS_ERR(adv->i2c_cec)) 1093 return PTR_ERR(adv->i2c_cec); 1094 1095 regmap_write(adv->regmap, ADV7511_REG_CEC_I2C_ADDR, 1096 adv->i2c_cec->addr << 1); 1097 1098 i2c_set_clientdata(adv->i2c_cec, adv); 1099 1100 adv->regmap_cec = devm_regmap_init_i2c(adv->i2c_cec, 1101 &adv7511_cec_regmap_config); 1102 if (IS_ERR(adv->regmap_cec)) { 1103 ret = PTR_ERR(adv->regmap_cec); 1104 goto err; 1105 } 1106 1107 if (adv->info->reg_cec_offset == ADV7533_REG_CEC_OFFSET) { 1108 ret = adv7533_patch_cec_registers(adv); 1109 if (ret) 1110 goto err; 1111 } 1112 1113 return 0; 1114err: 1115 i2c_unregister_device(adv->i2c_cec); 1116 return ret; 1117} 1118 1119static int adv7511_parse_dt(struct device_node *np, 1120 struct adv7511_link_config *config) 1121{ 1122 const char *str; 1123 int ret; 1124 1125 of_property_read_u32(np, "adi,input-depth", &config->input_color_depth); 1126 if (config->input_color_depth != 8 && config->input_color_depth != 10 && 1127 config->input_color_depth != 12) 1128 return -EINVAL; 1129 1130 ret = of_property_read_string(np, "adi,input-colorspace", &str); 1131 if (ret < 0) 1132 return ret; 1133 1134 if (!strcmp(str, "rgb")) 1135 config->input_colorspace = HDMI_COLORSPACE_RGB; 1136 else if (!strcmp(str, "yuv422")) 1137 config->input_colorspace = HDMI_COLORSPACE_YUV422; 1138 else if (!strcmp(str, "yuv444")) 1139 config->input_colorspace = HDMI_COLORSPACE_YUV444; 1140 else 1141 return -EINVAL; 1142 1143 ret = of_property_read_string(np, "adi,input-clock", &str); 1144 if (ret < 0) 1145 return ret; 1146 1147 if (!strcmp(str, "1x")) 1148 config->input_clock = ADV7511_INPUT_CLOCK_1X; 1149 else if (!strcmp(str, "2x")) 1150 config->input_clock = ADV7511_INPUT_CLOCK_2X; 1151 else if (!strcmp(str, "ddr")) 1152 config->input_clock = ADV7511_INPUT_CLOCK_DDR; 1153 else 1154 return -EINVAL; 1155 1156 if (config->input_colorspace == HDMI_COLORSPACE_YUV422 || 1157 config->input_clock != ADV7511_INPUT_CLOCK_1X) { 1158 ret = of_property_read_u32(np, "adi,input-style", 1159 &config->input_style); 1160 if (ret) 1161 return ret; 1162 1163 if (config->input_style < 1 || config->input_style > 3) 1164 return -EINVAL; 1165 1166 ret = of_property_read_string(np, "adi,input-justification", 1167 &str); 1168 if (ret < 0) 1169 return ret; 1170 1171 if (!strcmp(str, "left")) 1172 config->input_justification = 1173 ADV7511_INPUT_JUSTIFICATION_LEFT; 1174 else if (!strcmp(str, "evenly")) 1175 config->input_justification = 1176 ADV7511_INPUT_JUSTIFICATION_EVENLY; 1177 else if (!strcmp(str, "right")) 1178 config->input_justification = 1179 ADV7511_INPUT_JUSTIFICATION_RIGHT; 1180 else 1181 return -EINVAL; 1182 1183 } else { 1184 config->input_style = 1; 1185 config->input_justification = ADV7511_INPUT_JUSTIFICATION_LEFT; 1186 } 1187 1188 of_property_read_u32(np, "adi,clock-delay", &config->clock_delay); 1189 if (config->clock_delay < -1200 || config->clock_delay > 1600) 1190 return -EINVAL; 1191 1192 config->embedded_sync = of_property_read_bool(np, "adi,embedded-sync"); 1193 1194 /* Hardcode the sync pulse configurations for now. */ 1195 config->sync_pulse = ADV7511_INPUT_SYNC_PULSE_NONE; 1196 config->vsync_polarity = ADV7511_SYNC_POLARITY_PASSTHROUGH; 1197 config->hsync_polarity = ADV7511_SYNC_POLARITY_PASSTHROUGH; 1198 1199 return 0; 1200} 1201 1202static int adv7511_probe(struct i2c_client *i2c) 1203{ 1204 struct adv7511_link_config link_config; 1205 struct adv7511 *adv7511; 1206 struct device *dev = &i2c->dev; 1207 unsigned int val; 1208 int ret; 1209 1210 if (!dev->of_node) 1211 return -EINVAL; 1212 1213 adv7511 = devm_drm_bridge_alloc(dev, struct adv7511, bridge, 1214 &adv7511_bridge_funcs); 1215 if (IS_ERR(adv7511)) 1216 return PTR_ERR(adv7511); 1217 1218 adv7511->i2c_main = i2c; 1219 adv7511->powered = false; 1220 adv7511->status = connector_status_disconnected; 1221 adv7511->info = i2c_get_match_data(i2c); 1222 1223 memset(&link_config, 0, sizeof(link_config)); 1224 1225 ret = drm_of_find_panel_or_bridge(dev->of_node, 1, -1, NULL, 1226 &adv7511->next_bridge); 1227 if (ret && ret != -ENODEV) 1228 return ret; 1229 1230 if (adv7511->info->link_config) 1231 ret = adv7511_parse_dt(dev->of_node, &link_config); 1232 else 1233 ret = adv7533_parse_dt(dev->of_node, adv7511); 1234 if (ret) 1235 return ret; 1236 1237 ret = adv7511_init_regulators(adv7511); 1238 if (ret) { 1239 dev_err_probe(dev, ret, "failed to init regulators\n"); 1240 goto err_of_node_put; 1241 } 1242 1243 /* 1244 * The power down GPIO is optional. If present, toggle it from active to 1245 * inactive to wake up the encoder. 1246 */ 1247 adv7511->gpio_pd = devm_gpiod_get_optional(dev, "pd", GPIOD_OUT_HIGH); 1248 if (IS_ERR(adv7511->gpio_pd)) { 1249 ret = PTR_ERR(adv7511->gpio_pd); 1250 goto uninit_regulators; 1251 } 1252 1253 if (adv7511->gpio_pd) { 1254 usleep_range(5000, 6000); 1255 gpiod_set_value_cansleep(adv7511->gpio_pd, 0); 1256 } 1257 1258 adv7511->regmap = devm_regmap_init_i2c(i2c, &adv7511_regmap_config); 1259 if (IS_ERR(adv7511->regmap)) { 1260 ret = PTR_ERR(adv7511->regmap); 1261 goto uninit_regulators; 1262 } 1263 1264 ret = regmap_read(adv7511->regmap, ADV7511_REG_CHIP_REVISION, &val); 1265 if (ret) 1266 goto uninit_regulators; 1267 dev_dbg(dev, "Rev. %d\n", val); 1268 1269 if (adv7511->info->type == ADV7511) 1270 ret = regmap_register_patch(adv7511->regmap, 1271 adv7511_fixed_registers, 1272 ARRAY_SIZE(adv7511_fixed_registers)); 1273 else 1274 ret = adv7533_patch_registers(adv7511); 1275 if (ret) 1276 goto uninit_regulators; 1277 1278 adv7511_packet_disable(adv7511, 0xffff); 1279 1280 adv7511->i2c_edid = i2c_new_ancillary_device(i2c, "edid", 1281 ADV7511_EDID_I2C_ADDR_DEFAULT); 1282 if (IS_ERR(adv7511->i2c_edid)) { 1283 ret = PTR_ERR(adv7511->i2c_edid); 1284 goto uninit_regulators; 1285 } 1286 1287 regmap_write(adv7511->regmap, ADV7511_REG_EDID_I2C_ADDR, 1288 adv7511->i2c_edid->addr << 1); 1289 1290 adv7511->i2c_packet = i2c_new_ancillary_device(i2c, "packet", 1291 ADV7511_PACKET_I2C_ADDR_DEFAULT); 1292 if (IS_ERR(adv7511->i2c_packet)) { 1293 ret = PTR_ERR(adv7511->i2c_packet); 1294 goto err_i2c_unregister_edid; 1295 } 1296 1297 adv7511->regmap_packet = devm_regmap_init_i2c(adv7511->i2c_packet, 1298 &adv7511_packet_config); 1299 if (IS_ERR(adv7511->regmap_packet)) { 1300 ret = PTR_ERR(adv7511->regmap_packet); 1301 goto err_i2c_unregister_packet; 1302 } 1303 1304 regmap_write(adv7511->regmap, ADV7511_REG_PACKET_I2C_ADDR, 1305 adv7511->i2c_packet->addr << 1); 1306 1307 ret = adv7511_init_cec_regmap(adv7511); 1308 if (ret) 1309 goto err_i2c_unregister_packet; 1310 1311 INIT_WORK(&adv7511->hpd_work, adv7511_hpd_work); 1312 1313 adv7511_power_off(adv7511); 1314 1315 i2c_set_clientdata(i2c, adv7511); 1316 1317 if (adv7511->info->link_config) 1318 adv7511_set_link_config(adv7511, &link_config); 1319 1320 regmap_write(adv7511->regmap, ADV7511_REG_CEC_CTRL, 1321 ADV7511_CEC_CTRL_POWER_DOWN); 1322 1323 adv7511->bridge.ops = DRM_BRIDGE_OP_DETECT | 1324 DRM_BRIDGE_OP_EDID | 1325 DRM_BRIDGE_OP_HDMI; 1326 if (adv7511->i2c_main->irq) 1327 adv7511->bridge.ops |= DRM_BRIDGE_OP_HPD; 1328 1329 adv7511->bridge.vendor = "Analog"; 1330 adv7511->bridge.product = adv7511->info->name; 1331 1332#ifdef CONFIG_DRM_I2C_ADV7511_AUDIO 1333 adv7511->bridge.ops |= DRM_BRIDGE_OP_HDMI_AUDIO; 1334 adv7511->bridge.hdmi_audio_dev = dev; 1335 adv7511->bridge.hdmi_audio_max_i2s_playback_channels = 2; 1336 adv7511->bridge.hdmi_audio_i2s_formats = (SNDRV_PCM_FMTBIT_S16_LE | 1337 SNDRV_PCM_FMTBIT_S20_3LE | 1338 SNDRV_PCM_FMTBIT_S24_3LE | 1339 SNDRV_PCM_FMTBIT_S24_LE | 1340 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE), 1341 adv7511->bridge.hdmi_audio_spdif_playback = 1; 1342 adv7511->bridge.hdmi_audio_dai_port = 2; 1343#endif 1344 1345#ifdef CONFIG_DRM_I2C_ADV7511_CEC 1346 adv7511->bridge.ops |= DRM_BRIDGE_OP_HDMI_CEC_ADAPTER; 1347 adv7511->bridge.hdmi_cec_dev = dev; 1348 adv7511->bridge.hdmi_cec_adapter_name = dev_name(dev); 1349 adv7511->bridge.hdmi_cec_available_las = ADV7511_MAX_ADDRS; 1350#endif 1351 1352 adv7511->bridge.of_node = dev->of_node; 1353 adv7511->bridge.type = DRM_MODE_CONNECTOR_HDMIA; 1354 1355 drm_bridge_add(&adv7511->bridge); 1356 1357 if (i2c->irq) { 1358 init_waitqueue_head(&adv7511->wq); 1359 1360 ret = devm_request_threaded_irq(dev, i2c->irq, NULL, 1361 adv7511_irq_handler, 1362 IRQF_ONESHOT | IRQF_SHARED, 1363 dev_name(dev), 1364 adv7511); 1365 if (ret) 1366 goto err_unregister_audio; 1367 } 1368 1369 if (adv7511->info->has_dsi) { 1370 ret = adv7533_attach_dsi(adv7511); 1371 if (ret) 1372 goto err_unregister_audio; 1373 } 1374 1375 return 0; 1376 1377err_unregister_audio: 1378 drm_bridge_remove(&adv7511->bridge); 1379 i2c_unregister_device(adv7511->i2c_cec); 1380 clk_disable_unprepare(adv7511->cec_clk); 1381err_i2c_unregister_packet: 1382 i2c_unregister_device(adv7511->i2c_packet); 1383err_i2c_unregister_edid: 1384 i2c_unregister_device(adv7511->i2c_edid); 1385uninit_regulators: 1386 adv7511_uninit_regulators(adv7511); 1387err_of_node_put: 1388 of_node_put(adv7511->host_node); 1389 1390 return ret; 1391} 1392 1393static void adv7511_remove(struct i2c_client *i2c) 1394{ 1395 struct adv7511 *adv7511 = i2c_get_clientdata(i2c); 1396 1397 of_node_put(adv7511->host_node); 1398 1399 adv7511_uninit_regulators(adv7511); 1400 1401 drm_bridge_remove(&adv7511->bridge); 1402 1403 i2c_unregister_device(adv7511->i2c_cec); 1404 clk_disable_unprepare(adv7511->cec_clk); 1405 1406 i2c_unregister_device(adv7511->i2c_packet); 1407 i2c_unregister_device(adv7511->i2c_edid); 1408} 1409 1410static const struct adv7511_chip_info adv7511_chip_info = { 1411 .type = ADV7511, 1412 .name = "ADV7511", 1413 .max_mode_clock_khz = 165000, 1414 .supply_names = adv7511_supply_names, 1415 .num_supplies = ARRAY_SIZE(adv7511_supply_names), 1416 .link_config = true, 1417}; 1418 1419static const struct adv7511_chip_info adv7533_chip_info = { 1420 .type = ADV7533, 1421 .name = "ADV7533", 1422 .max_mode_clock_khz = 80000, 1423 .max_lane_freq_khz = 800000, 1424 .supply_names = adv7533_supply_names, 1425 .num_supplies = ARRAY_SIZE(adv7533_supply_names), 1426 .reg_cec_offset = ADV7533_REG_CEC_OFFSET, 1427 .has_dsi = true, 1428}; 1429 1430static const struct adv7511_chip_info adv7535_chip_info = { 1431 .type = ADV7535, 1432 .name = "ADV7535", 1433 .max_mode_clock_khz = 148500, 1434 .max_lane_freq_khz = 891000, 1435 .supply_names = adv7533_supply_names, 1436 .num_supplies = ARRAY_SIZE(adv7533_supply_names), 1437 .reg_cec_offset = ADV7533_REG_CEC_OFFSET, 1438 .has_dsi = true, 1439 .hpd_override_enable = true, 1440}; 1441 1442static const struct i2c_device_id adv7511_i2c_ids[] = { 1443 { "adv7511", (kernel_ulong_t)&adv7511_chip_info }, 1444 { "adv7511w", (kernel_ulong_t)&adv7511_chip_info }, 1445 { "adv7513", (kernel_ulong_t)&adv7511_chip_info }, 1446 { "adv7533", (kernel_ulong_t)&adv7533_chip_info }, 1447 { "adv7535", (kernel_ulong_t)&adv7535_chip_info }, 1448 { } 1449}; 1450MODULE_DEVICE_TABLE(i2c, adv7511_i2c_ids); 1451 1452static const struct of_device_id adv7511_of_ids[] = { 1453 { .compatible = "adi,adv7511", .data = &adv7511_chip_info }, 1454 { .compatible = "adi,adv7511w", .data = &adv7511_chip_info }, 1455 { .compatible = "adi,adv7513", .data = &adv7511_chip_info }, 1456 { .compatible = "adi,adv7533", .data = &adv7533_chip_info }, 1457 { .compatible = "adi,adv7535", .data = &adv7535_chip_info }, 1458 { } 1459}; 1460MODULE_DEVICE_TABLE(of, adv7511_of_ids); 1461 1462static struct mipi_dsi_driver adv7533_dsi_driver = { 1463 .driver.name = "adv7533", 1464}; 1465 1466static struct i2c_driver adv7511_driver = { 1467 .driver = { 1468 .name = "adv7511", 1469 .of_match_table = adv7511_of_ids, 1470 }, 1471 .id_table = adv7511_i2c_ids, 1472 .probe = adv7511_probe, 1473 .remove = adv7511_remove, 1474}; 1475 1476static int __init adv7511_init(void) 1477{ 1478 int ret; 1479 1480 if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) { 1481 ret = mipi_dsi_driver_register(&adv7533_dsi_driver); 1482 if (ret) 1483 return ret; 1484 } 1485 1486 ret = i2c_add_driver(&adv7511_driver); 1487 if (ret) { 1488 if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) 1489 mipi_dsi_driver_unregister(&adv7533_dsi_driver); 1490 } 1491 1492 return ret; 1493} 1494module_init(adv7511_init); 1495 1496static void __exit adv7511_exit(void) 1497{ 1498 i2c_del_driver(&adv7511_driver); 1499 1500 if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) 1501 mipi_dsi_driver_unregister(&adv7533_dsi_driver); 1502} 1503module_exit(adv7511_exit); 1504 1505MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>"); 1506MODULE_DESCRIPTION("ADV7511 HDMI transmitter driver"); 1507MODULE_LICENSE("GPL");
~/
Read-only file preview.