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 <media/cec.h> 16 17 #include <drm/drm_atomic.h> 18 #include <drm/drm_atomic_helper.h> 19 #include <drm/drm_edid.h> 20 #include <drm/drm_of.h> 21 #include <drm/drm_print.h> 22 #include <drm/drm_probe_helper.h> 23 24 #include "adv7511.h" 25 26 /* ADI recommended values for proper operation. */ 27 static const struct reg_sequence adv7511_fixed_registers[] = { 28 { 0x98, 0x03 }, 29 { 0x9a, 0xe0 }, 30 { 0x9c, 0x30 }, 31 { 0x9d, 0x61 }, 32 { 0xa2, 0xa4 }, 33 { 0xa3, 0xa4 }, 34 { 0xe0, 0xd0 }, 35 { 0xf9, 0x00 }, 36 { 0x55, 0x02 }, 37 }; 38 39 /* ----------------------------------------------------------------------------- 40 * Register access 41 */ 42 43 static const uint8_t adv7511_register_defaults[] = { 44 0x12, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 00 */ 45 0x00, 0x00, 0x01, 0x0e, 0xbc, 0x18, 0x01, 0x13, 46 0x25, 0x37, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 10 */ 47 0x46, 0x62, 0x04, 0xa8, 0x00, 0x00, 0x1c, 0x84, 48 0x1c, 0xbf, 0x04, 0xa8, 0x1e, 0x70, 0x02, 0x1e, /* 20 */ 49 0x00, 0x00, 0x04, 0xa8, 0x08, 0x12, 0x1b, 0xac, 50 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 30 */ 51 0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0xb0, 52 0x00, 0x50, 0x90, 0x7e, 0x79, 0x70, 0x00, 0x00, /* 40 */ 53 0x00, 0xa8, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 54 0x00, 0x00, 0x02, 0x0d, 0x00, 0x00, 0x00, 0x00, /* 50 */ 55 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 56 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 60 */ 57 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 58 0x01, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 70 */ 59 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 60 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 80 */ 61 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 62 0x00, 0x00, 0x00, 0x00, 0xc0, 0x00, 0x00, 0x00, /* 90 */ 63 0x0b, 0x02, 0x00, 0x18, 0x5a, 0x60, 0x00, 0x00, 64 0x00, 0x00, 0x80, 0x80, 0x08, 0x04, 0x00, 0x00, /* a0 */ 65 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x40, 0x14, 66 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* b0 */ 67 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 68 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* c0 */ 69 0x00, 0x03, 0x00, 0x00, 0x02, 0x00, 0x01, 0x04, 70 0x30, 0xff, 0x80, 0x80, 0x80, 0x00, 0x00, 0x00, /* d0 */ 71 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x01, 72 0x80, 0x75, 0x00, 0x00, 0x60, 0x00, 0x00, 0x00, /* e0 */ 73 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 74 0x00, 0x00, 0x00, 0x00, 0x00, 0x75, 0x11, 0x00, /* f0 */ 75 0x00, 0x7c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 76 }; 77 78 static bool adv7511_register_volatile(struct device *dev, unsigned int reg) 79 { 80 switch (reg) { 81 case ADV7511_REG_CHIP_REVISION: 82 case ADV7511_REG_SPDIF_FREQ: 83 case ADV7511_REG_CTS_AUTOMATIC1: 84 case ADV7511_REG_CTS_AUTOMATIC2: 85 case ADV7511_REG_VIC_DETECTED: 86 case ADV7511_REG_VIC_SEND: 87 case ADV7511_REG_AUX_VIC_DETECTED: 88 case ADV7511_REG_STATUS: 89 case ADV7511_REG_GC(1): 90 case ADV7511_REG_INT(0): 91 case ADV7511_REG_INT(1): 92 case ADV7511_REG_PLL_STATUS: 93 case ADV7511_REG_AN(0): 94 case ADV7511_REG_AN(1): 95 case ADV7511_REG_AN(2): 96 case ADV7511_REG_AN(3): 97 case ADV7511_REG_AN(4): 98 case ADV7511_REG_AN(5): 99 case ADV7511_REG_AN(6): 100 case ADV7511_REG_AN(7): 101 case ADV7511_REG_HDCP_STATUS: 102 case ADV7511_REG_BCAPS: 103 case ADV7511_REG_BKSV(0): 104 case ADV7511_REG_BKSV(1): 105 case ADV7511_REG_BKSV(2): 106 case ADV7511_REG_BKSV(3): 107 case ADV7511_REG_BKSV(4): 108 case ADV7511_REG_DDC_STATUS: 109 case ADV7511_REG_EDID_READ_CTRL: 110 case ADV7511_REG_BSTATUS(0): 111 case ADV7511_REG_BSTATUS(1): 112 case ADV7511_REG_CHIP_ID_HIGH: 113 case ADV7511_REG_CHIP_ID_LOW: 114 return true; 115 } 116 117 return false; 118 } 119 120 static const struct regmap_config adv7511_regmap_config = { 121 .reg_bits = 8, 122 .val_bits = 8, 123 124 .max_register = 0xff, 125 .cache_type = REGCACHE_MAPLE, 126 .reg_defaults_raw = adv7511_register_defaults, 127 .num_reg_defaults_raw = ARRAY_SIZE(adv7511_register_defaults), 128 129 .volatile_reg = adv7511_register_volatile, 130 }; 131 132 /* ----------------------------------------------------------------------------- 133 * Hardware configuration 134 */ 135 136 static void adv7511_set_colormap(struct adv7511 *adv7511, bool enable, 137 const uint16_t *coeff, 138 unsigned int scaling_factor) 139 { 140 unsigned int i; 141 142 regmap_update_bits(adv7511->regmap, ADV7511_REG_CSC_UPPER(1), 143 ADV7511_CSC_UPDATE_MODE, ADV7511_CSC_UPDATE_MODE); 144 145 if (enable) { 146 for (i = 0; i < 12; ++i) { 147 regmap_update_bits(adv7511->regmap, 148 ADV7511_REG_CSC_UPPER(i), 149 0x1f, coeff[i] >> 8); 150 regmap_write(adv7511->regmap, 151 ADV7511_REG_CSC_LOWER(i), 152 coeff[i] & 0xff); 153 } 154 } 155 156 if (enable) 157 regmap_update_bits(adv7511->regmap, ADV7511_REG_CSC_UPPER(0), 158 0xe0, 0x80 | (scaling_factor << 5)); 159 else 160 regmap_update_bits(adv7511->regmap, ADV7511_REG_CSC_UPPER(0), 161 0x80, 0x00); 162 163 regmap_update_bits(adv7511->regmap, ADV7511_REG_CSC_UPPER(1), 164 ADV7511_CSC_UPDATE_MODE, 0); 165 } 166 167 static int adv7511_packet_enable(struct adv7511 *adv7511, unsigned int packet) 168 { 169 if (packet & 0xff) 170 regmap_update_bits(adv7511->regmap, ADV7511_REG_PACKET_ENABLE0, 171 packet, 0xff); 172 173 if (packet & 0xff00) { 174 packet >>= 8; 175 regmap_update_bits(adv7511->regmap, ADV7511_REG_PACKET_ENABLE1, 176 packet, 0xff); 177 } 178 179 return 0; 180 } 181 182 static int adv7511_packet_disable(struct adv7511 *adv7511, unsigned int packet) 183 { 184 if (packet & 0xff) 185 regmap_update_bits(adv7511->regmap, ADV7511_REG_PACKET_ENABLE0, 186 packet, 0x00); 187 188 if (packet & 0xff00) { 189 packet >>= 8; 190 regmap_update_bits(adv7511->regmap, ADV7511_REG_PACKET_ENABLE1, 191 packet, 0x00); 192 } 193 194 return 0; 195 } 196 197 /* Coefficients for adv7511 color space conversion */ 198 static const uint16_t adv7511_csc_ycbcr_to_rgb[] = { 199 0x0734, 0x04ad, 0x0000, 0x1c1b, 200 0x1ddc, 0x04ad, 0x1f24, 0x0135, 201 0x0000, 0x04ad, 0x087c, 0x1b77, 202 }; 203 204 static void adv7511_set_config_csc(struct adv7511 *adv7511, 205 struct drm_connector *connector, 206 bool rgb, bool hdmi_mode) 207 { 208 struct adv7511_video_config config; 209 bool output_format_422, output_format_ycbcr; 210 unsigned int mode; 211 uint8_t infoframe[17]; 212 213 config.hdmi_mode = hdmi_mode; 214 215 hdmi_avi_infoframe_init(&config.avi_infoframe); 216 217 config.avi_infoframe.scan_mode = HDMI_SCAN_MODE_UNDERSCAN; 218 219 if (rgb) { 220 config.csc_enable = false; 221 config.avi_infoframe.colorspace = HDMI_COLORSPACE_RGB; 222 } else { 223 config.csc_scaling_factor = ADV7511_CSC_SCALING_4; 224 config.csc_coefficents = adv7511_csc_ycbcr_to_rgb; 225 226 if ((connector->display_info.color_formats & 227 DRM_COLOR_FORMAT_YCBCR422) && 228 config.hdmi_mode) { 229 config.csc_enable = false; 230 config.avi_infoframe.colorspace = 231 HDMI_COLORSPACE_YUV422; 232 } else { 233 config.csc_enable = true; 234 config.avi_infoframe.colorspace = HDMI_COLORSPACE_RGB; 235 } 236 } 237 238 if (config.hdmi_mode) { 239 mode = ADV7511_HDMI_CFG_MODE_HDMI; 240 241 switch (config.avi_infoframe.colorspace) { 242 case HDMI_COLORSPACE_YUV444: 243 output_format_422 = false; 244 output_format_ycbcr = true; 245 break; 246 case HDMI_COLORSPACE_YUV422: 247 output_format_422 = true; 248 output_format_ycbcr = true; 249 break; 250 default: 251 output_format_422 = false; 252 output_format_ycbcr = false; 253 break; 254 } 255 } else { 256 mode = ADV7511_HDMI_CFG_MODE_DVI; 257 output_format_422 = false; 258 output_format_ycbcr = false; 259 } 260 261 adv7511_packet_disable(adv7511, ADV7511_PACKET_ENABLE_AVI_INFOFRAME); 262 263 adv7511_set_colormap(adv7511, config.csc_enable, 264 config.csc_coefficents, 265 config.csc_scaling_factor); 266 267 regmap_update_bits(adv7511->regmap, ADV7511_REG_VIDEO_INPUT_CFG1, 0x81, 268 (output_format_422 << 7) | output_format_ycbcr); 269 270 regmap_update_bits(adv7511->regmap, ADV7511_REG_HDCP_HDMI_CFG, 271 ADV7511_HDMI_CFG_MODE_MASK, mode); 272 273 hdmi_avi_infoframe_pack(&config.avi_infoframe, infoframe, 274 sizeof(infoframe)); 275 276 /* The AVI infoframe id is not configurable */ 277 regmap_bulk_write(adv7511->regmap, ADV7511_REG_AVI_INFOFRAME_VERSION, 278 infoframe + 1, sizeof(infoframe) - 1); 279 280 adv7511_packet_enable(adv7511, ADV7511_PACKET_ENABLE_AVI_INFOFRAME); 281 } 282 283 static void adv7511_set_link_config(struct adv7511 *adv7511, 284 const struct adv7511_link_config *config) 285 { 286 /* 287 * The input style values documented in the datasheet don't match the 288 * hardware register field values :-( 289 */ 290 static const unsigned int input_styles[4] = { 0, 2, 1, 3 }; 291 292 unsigned int clock_delay; 293 unsigned int color_depth; 294 unsigned int input_id; 295 296 clock_delay = (config->clock_delay + 1200) / 400; 297 color_depth = config->input_color_depth == 8 ? 3 298 : (config->input_color_depth == 10 ? 1 : 2); 299 300 /* TODO Support input ID 6 */ 301 if (config->input_colorspace != HDMI_COLORSPACE_YUV422) 302 input_id = config->input_clock == ADV7511_INPUT_CLOCK_DDR 303 ? 5 : 0; 304 else if (config->input_clock == ADV7511_INPUT_CLOCK_DDR) 305 input_id = config->embedded_sync ? 8 : 7; 306 else if (config->input_clock == ADV7511_INPUT_CLOCK_2X) 307 input_id = config->embedded_sync ? 4 : 3; 308 else 309 input_id = config->embedded_sync ? 2 : 1; 310 311 regmap_update_bits(adv7511->regmap, ADV7511_REG_I2C_FREQ_ID_CFG, 0xf, 312 input_id); 313 regmap_update_bits(adv7511->regmap, ADV7511_REG_VIDEO_INPUT_CFG1, 0x7e, 314 (color_depth << 4) | 315 (input_styles[config->input_style] << 2)); 316 regmap_write(adv7511->regmap, ADV7511_REG_VIDEO_INPUT_CFG2, 317 config->input_justification << 3); 318 regmap_write(adv7511->regmap, ADV7511_REG_TIMING_GEN_SEQ, 319 config->sync_pulse << 2); 320 321 regmap_write(adv7511->regmap, 0xba, clock_delay << 5); 322 323 adv7511->embedded_sync = config->embedded_sync; 324 adv7511->hsync_polarity = config->hsync_polarity; 325 adv7511->vsync_polarity = config->vsync_polarity; 326 adv7511->rgb = config->input_colorspace == HDMI_COLORSPACE_RGB; 327 } 328 329 static void __adv7511_power_on(struct adv7511 *adv7511) 330 { 331 adv7511->current_edid_segment = -1; 332 333 regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER, 334 ADV7511_POWER_POWER_DOWN, 0); 335 if (adv7511->i2c_main->irq) { 336 /* 337 * Documentation says the INT_ENABLE registers are reset in 338 * POWER_DOWN mode. My 7511w preserved the bits, however. 339 * Still, let's be safe and stick to the documentation. 340 */ 341 regmap_write(adv7511->regmap, ADV7511_REG_INT_ENABLE(0), 342 ADV7511_INT0_EDID_READY | ADV7511_INT0_HPD); 343 regmap_update_bits(adv7511->regmap, 344 ADV7511_REG_INT_ENABLE(1), 345 ADV7511_INT1_DDC_ERROR, 346 ADV7511_INT1_DDC_ERROR); 347 } 348 349 /* 350 * Per spec it is allowed to pulse the HPD signal to indicate that the 351 * EDID information has changed. Some monitors do this when they wakeup 352 * from standby or are enabled. When the HPD goes low the adv7511 is 353 * reset and the outputs are disabled which might cause the monitor to 354 * go to standby again. To avoid this we ignore the HPD pin for the 355 * first few seconds after enabling the output. On the other hand 356 * adv7535 require to enable HPD Override bit for proper HPD. 357 */ 358 if (adv7511->info->hpd_override_enable) 359 regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2, 360 ADV7535_REG_POWER2_HPD_OVERRIDE, 361 ADV7535_REG_POWER2_HPD_OVERRIDE); 362 else 363 regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2, 364 ADV7511_REG_POWER2_HPD_SRC_MASK, 365 ADV7511_REG_POWER2_HPD_SRC_NONE); 366 } 367 368 static void adv7511_power_on(struct adv7511 *adv7511) 369 { 370 __adv7511_power_on(adv7511); 371 372 /* 373 * Most of the registers are reset during power down or when HPD is low. 374 */ 375 regcache_sync(adv7511->regmap); 376 377 if (adv7511->info->has_dsi) 378 adv7533_dsi_power_on(adv7511); 379 adv7511->powered = true; 380 } 381 382 static void __adv7511_power_off(struct adv7511 *adv7511) 383 { 384 /* TODO: setup additional power down modes */ 385 if (adv7511->info->hpd_override_enable) 386 regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2, 387 ADV7535_REG_POWER2_HPD_OVERRIDE, 0); 388 389 regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER, 390 ADV7511_POWER_POWER_DOWN, 391 ADV7511_POWER_POWER_DOWN); 392 regmap_update_bits(adv7511->regmap, 393 ADV7511_REG_INT_ENABLE(1), 394 ADV7511_INT1_DDC_ERROR, 0); 395 regcache_mark_dirty(adv7511->regmap); 396 } 397 398 static void adv7511_power_off(struct adv7511 *adv7511) 399 { 400 __adv7511_power_off(adv7511); 401 if (adv7511->info->has_dsi) 402 adv7533_dsi_power_off(adv7511); 403 adv7511->powered = false; 404 } 405 406 /* ----------------------------------------------------------------------------- 407 * Interrupt and hotplug detection 408 */ 409 410 static bool adv7511_hpd(struct adv7511 *adv7511) 411 { 412 unsigned int irq0; 413 int ret; 414 415 ret = regmap_read(adv7511->regmap, ADV7511_REG_INT(0), &irq0); 416 if (ret < 0) 417 return false; 418 419 if (irq0 & ADV7511_INT0_HPD) { 420 regmap_write(adv7511->regmap, ADV7511_REG_INT(0), 421 ADV7511_INT0_HPD); 422 return true; 423 } 424 425 return false; 426 } 427 428 static void adv7511_hpd_work(struct work_struct *work) 429 { 430 struct adv7511 *adv7511 = container_of(work, struct adv7511, hpd_work); 431 enum drm_connector_status status; 432 unsigned int val; 433 int ret; 434 435 ret = regmap_read(adv7511->regmap, ADV7511_REG_STATUS, &val); 436 if (ret < 0) 437 status = connector_status_disconnected; 438 else if (val & ADV7511_STATUS_HPD) 439 status = connector_status_connected; 440 else 441 status = connector_status_disconnected; 442 443 /* 444 * The bridge resets its registers on unplug. So when we get a plug 445 * event and we're already supposed to be powered, cycle the bridge to 446 * restore its state. 447 */ 448 if (status == connector_status_connected && 449 adv7511->connector.status == connector_status_disconnected && 450 adv7511->powered) { 451 regcache_mark_dirty(adv7511->regmap); 452 adv7511_power_on(adv7511); 453 } 454 455 if (adv7511->connector.status != status) { 456 adv7511->connector.status = status; 457 458 if (adv7511->connector.dev) { 459 if (status == connector_status_disconnected) 460 cec_phys_addr_invalidate(adv7511->cec_adap); 461 drm_kms_helper_hotplug_event(adv7511->connector.dev); 462 } else { 463 drm_bridge_hpd_notify(&adv7511->bridge, status); 464 } 465 } 466 } 467 468 static int adv7511_irq_process(struct adv7511 *adv7511, bool process_hpd) 469 { 470 unsigned int irq0, irq1; 471 int ret; 472 473 ret = regmap_read(adv7511->regmap, ADV7511_REG_INT(0), &irq0); 474 if (ret < 0) 475 return ret; 476 477 ret = regmap_read(adv7511->regmap, ADV7511_REG_INT(1), &irq1); 478 if (ret < 0) 479 return ret; 480 481 /* If there is no IRQ to handle, exit indicating no IRQ data */ 482 if (!(irq0 & (ADV7511_INT0_HPD | ADV7511_INT0_EDID_READY)) && 483 !(irq1 & ADV7511_INT1_DDC_ERROR)) 484 return -ENODATA; 485 486 regmap_write(adv7511->regmap, ADV7511_REG_INT(0), irq0); 487 regmap_write(adv7511->regmap, ADV7511_REG_INT(1), irq1); 488 489 if (process_hpd && irq0 & ADV7511_INT0_HPD && adv7511->bridge.encoder) 490 schedule_work(&adv7511->hpd_work); 491 492 if (irq0 & ADV7511_INT0_EDID_READY || irq1 & ADV7511_INT1_DDC_ERROR) { 493 adv7511->edid_read = true; 494 495 if (adv7511->i2c_main->irq) 496 wake_up_all(&adv7511->wq); 497 } 498 499 #ifdef CONFIG_DRM_I2C_ADV7511_CEC 500 adv7511_cec_irq_process(adv7511, irq1); 501 #endif 502 503 return 0; 504 } 505 506 static irqreturn_t adv7511_irq_handler(int irq, void *devid) 507 { 508 struct adv7511 *adv7511 = devid; 509 int ret; 510 511 ret = adv7511_irq_process(adv7511, true); 512 return ret < 0 ? IRQ_NONE : IRQ_HANDLED; 513 } 514 515 /* ----------------------------------------------------------------------------- 516 * EDID retrieval 517 */ 518 519 static int adv7511_wait_for_edid(struct adv7511 *adv7511, int timeout) 520 { 521 int ret; 522 523 if (adv7511->i2c_main->irq) { 524 ret = wait_event_interruptible_timeout(adv7511->wq, 525 adv7511->edid_read, msecs_to_jiffies(timeout)); 526 } else { 527 for (; timeout > 0; timeout -= 25) { 528 ret = adv7511_irq_process(adv7511, false); 529 if (ret < 0) 530 break; 531 532 if (adv7511->edid_read) 533 break; 534 535 msleep(25); 536 } 537 } 538 539 return adv7511->edid_read ? 0 : -EIO; 540 } 541 542 static int adv7511_get_edid_block(void *data, u8 *buf, unsigned int block, 543 size_t len) 544 { 545 struct adv7511 *adv7511 = data; 546 struct i2c_msg xfer[2]; 547 uint8_t offset; 548 unsigned int i; 549 int ret; 550 551 if (len > 128) 552 return -EINVAL; 553 554 if (adv7511->current_edid_segment != block / 2) { 555 unsigned int status; 556 557 ret = regmap_read(adv7511->regmap, ADV7511_REG_DDC_STATUS, 558 &status); 559 if (ret < 0) 560 return ret; 561 562 if (status != 2) { 563 adv7511->edid_read = false; 564 regmap_write(adv7511->regmap, ADV7511_REG_EDID_SEGMENT, 565 block); 566 ret = adv7511_wait_for_edid(adv7511, 200); 567 if (ret < 0) 568 return ret; 569 } 570 571 /* Break this apart, hopefully more I2C controllers will 572 * support 64 byte transfers than 256 byte transfers 573 */ 574 575 xfer[0].addr = adv7511->i2c_edid->addr; 576 xfer[0].flags = 0; 577 xfer[0].len = 1; 578 xfer[0].buf = &offset; 579 xfer[1].addr = adv7511->i2c_edid->addr; 580 xfer[1].flags = I2C_M_RD; 581 xfer[1].len = 64; 582 xfer[1].buf = adv7511->edid_buf; 583 584 offset = 0; 585 586 for (i = 0; i < 4; ++i) { 587 ret = i2c_transfer(adv7511->i2c_edid->adapter, xfer, 588 ARRAY_SIZE(xfer)); 589 if (ret < 0) 590 return ret; 591 else if (ret != 2) 592 return -EIO; 593 594 xfer[1].buf += 64; 595 offset += 64; 596 } 597 598 adv7511->current_edid_segment = block / 2; 599 } 600 601 if (block % 2 == 0) 602 memcpy(buf, adv7511->edid_buf, len); 603 else 604 memcpy(buf, adv7511->edid_buf + 128, len); 605 606 return 0; 607 } 608 609 /* ----------------------------------------------------------------------------- 610 * ADV75xx helpers 611 */ 612 613 static const struct drm_edid *adv7511_edid_read(struct adv7511 *adv7511, 614 struct drm_connector *connector) 615 { 616 const struct drm_edid *drm_edid; 617 618 /* Reading the EDID only works if the device is powered */ 619 if (!adv7511->powered) { 620 unsigned int edid_i2c_addr = 621 (adv7511->i2c_edid->addr << 1); 622 623 __adv7511_power_on(adv7511); 624 625 /* Reset the EDID_I2C_ADDR register as it might be cleared */ 626 regmap_write(adv7511->regmap, ADV7511_REG_EDID_I2C_ADDR, 627 edid_i2c_addr); 628 } 629 630 drm_edid = drm_edid_read_custom(connector, adv7511_get_edid_block, adv7511); 631 632 if (!adv7511->powered) 633 __adv7511_power_off(adv7511); 634 635 if (drm_edid) { 636 /* 637 * FIXME: The CEC physical address should be set using 638 * cec_s_phys_addr(adap, 639 * connector->display_info.source_physical_address, false) from 640 * a path that has read the EDID and called 641 * drm_edid_connector_update(). 642 */ 643 const struct edid *edid = drm_edid_raw(drm_edid); 644 645 adv7511_set_config_csc(adv7511, connector, adv7511->rgb, 646 drm_detect_hdmi_monitor(edid)); 647 648 cec_s_phys_addr_from_edid(adv7511->cec_adap, edid); 649 } else { 650 cec_s_phys_addr_from_edid(adv7511->cec_adap, NULL); 651 } 652 653 return drm_edid; 654 } 655 656 static int adv7511_get_modes(struct adv7511 *adv7511, 657 struct drm_connector *connector) 658 { 659 const struct drm_edid *drm_edid; 660 unsigned int count; 661 662 drm_edid = adv7511_edid_read(adv7511, connector); 663 664 drm_edid_connector_update(connector, drm_edid); 665 count = drm_edid_connector_add_modes(connector); 666 667 drm_edid_free(drm_edid); 668 669 return count; 670 } 671 672 static enum drm_connector_status 673 adv7511_detect(struct adv7511 *adv7511, struct drm_connector *connector) 674 { 675 enum drm_connector_status status; 676 unsigned int val; 677 bool hpd; 678 int ret; 679 680 ret = regmap_read(adv7511->regmap, ADV7511_REG_STATUS, &val); 681 if (ret < 0) 682 return connector_status_disconnected; 683 684 if (val & ADV7511_STATUS_HPD) 685 status = connector_status_connected; 686 else 687 status = connector_status_disconnected; 688 689 hpd = adv7511_hpd(adv7511); 690 691 /* The chip resets itself when the cable is disconnected, so in case 692 * there is a pending HPD interrupt and the cable is connected there was 693 * at least one transition from disconnected to connected and the chip 694 * has to be reinitialized. */ 695 if (status == connector_status_connected && hpd && adv7511->powered) { 696 regcache_mark_dirty(adv7511->regmap); 697 adv7511_power_on(adv7511); 698 if (connector) 699 adv7511_get_modes(adv7511, connector); 700 if (adv7511->status == connector_status_connected) 701 status = connector_status_disconnected; 702 } else { 703 /* Renable HPD sensing */ 704 if (adv7511->info->hpd_override_enable) 705 regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2, 706 ADV7535_REG_POWER2_HPD_OVERRIDE, 707 ADV7535_REG_POWER2_HPD_OVERRIDE); 708 else 709 regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2, 710 ADV7511_REG_POWER2_HPD_SRC_MASK, 711 ADV7511_REG_POWER2_HPD_SRC_BOTH); 712 } 713 714 adv7511->status = status; 715 return status; 716 } 717 718 static enum drm_mode_status adv7511_mode_valid(struct adv7511 *adv7511, 719 const struct drm_display_mode *mode) 720 { 721 if (mode->clock > 165000) 722 return MODE_CLOCK_HIGH; 723 724 return MODE_OK; 725 } 726 727 static void adv7511_mode_set(struct adv7511 *adv7511, 728 const struct drm_display_mode *mode, 729 const struct drm_display_mode *adj_mode) 730 { 731 unsigned int low_refresh_rate; 732 unsigned int hsync_polarity = 0; 733 unsigned int vsync_polarity = 0; 734 735 if (adv7511->embedded_sync) { 736 unsigned int hsync_offset, hsync_len; 737 unsigned int vsync_offset, vsync_len; 738 739 hsync_offset = adj_mode->crtc_hsync_start - 740 adj_mode->crtc_hdisplay; 741 vsync_offset = adj_mode->crtc_vsync_start - 742 adj_mode->crtc_vdisplay; 743 hsync_len = adj_mode->crtc_hsync_end - 744 adj_mode->crtc_hsync_start; 745 vsync_len = adj_mode->crtc_vsync_end - 746 adj_mode->crtc_vsync_start; 747 748 /* The hardware vsync generator has a off-by-one bug */ 749 vsync_offset += 1; 750 751 regmap_write(adv7511->regmap, ADV7511_REG_HSYNC_PLACEMENT_MSB, 752 ((hsync_offset >> 10) & 0x7) << 5); 753 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(0), 754 (hsync_offset >> 2) & 0xff); 755 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(1), 756 ((hsync_offset & 0x3) << 6) | 757 ((hsync_len >> 4) & 0x3f)); 758 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(2), 759 ((hsync_len & 0xf) << 4) | 760 ((vsync_offset >> 6) & 0xf)); 761 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(3), 762 ((vsync_offset & 0x3f) << 2) | 763 ((vsync_len >> 8) & 0x3)); 764 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(4), 765 vsync_len & 0xff); 766 767 hsync_polarity = !(adj_mode->flags & DRM_MODE_FLAG_PHSYNC); 768 vsync_polarity = !(adj_mode->flags & DRM_MODE_FLAG_PVSYNC); 769 } else { 770 enum adv7511_sync_polarity mode_hsync_polarity; 771 enum adv7511_sync_polarity mode_vsync_polarity; 772 773 /** 774 * If the input signal is always low or always high we want to 775 * invert or let it passthrough depending on the polarity of the 776 * current mode. 777 **/ 778 if (adj_mode->flags & DRM_MODE_FLAG_NHSYNC) 779 mode_hsync_polarity = ADV7511_SYNC_POLARITY_LOW; 780 else 781 mode_hsync_polarity = ADV7511_SYNC_POLARITY_HIGH; 782 783 if (adj_mode->flags & DRM_MODE_FLAG_NVSYNC) 784 mode_vsync_polarity = ADV7511_SYNC_POLARITY_LOW; 785 else 786 mode_vsync_polarity = ADV7511_SYNC_POLARITY_HIGH; 787 788 if (adv7511->hsync_polarity != mode_hsync_polarity && 789 adv7511->hsync_polarity != 790 ADV7511_SYNC_POLARITY_PASSTHROUGH) 791 hsync_polarity = 1; 792 793 if (adv7511->vsync_polarity != mode_vsync_polarity && 794 adv7511->vsync_polarity != 795 ADV7511_SYNC_POLARITY_PASSTHROUGH) 796 vsync_polarity = 1; 797 } 798 799 if (drm_mode_vrefresh(mode) <= 24) 800 low_refresh_rate = ADV7511_LOW_REFRESH_RATE_24HZ; 801 else if (drm_mode_vrefresh(mode) <= 25) 802 low_refresh_rate = ADV7511_LOW_REFRESH_RATE_25HZ; 803 else if (drm_mode_vrefresh(mode) <= 30) 804 low_refresh_rate = ADV7511_LOW_REFRESH_RATE_30HZ; 805 else 806 low_refresh_rate = ADV7511_LOW_REFRESH_RATE_NONE; 807 808 if (adv7511->info->type == ADV7511) 809 regmap_update_bits(adv7511->regmap, 0xfb, 810 0x6, low_refresh_rate << 1); 811 else 812 regmap_update_bits(adv7511->regmap, 0x4a, 813 0xc, low_refresh_rate << 2); 814 815 regmap_update_bits(adv7511->regmap, 0x17, 816 0x60, (vsync_polarity << 6) | (hsync_polarity << 5)); 817 818 drm_mode_copy(&adv7511->curr_mode, adj_mode); 819 820 /* 821 * TODO Test first order 4:2:2 to 4:4:4 up conversion method, which is 822 * supposed to give better results. 823 */ 824 825 adv7511->f_tmds = mode->clock; 826 } 827 828 /* ----------------------------------------------------------------------------- 829 * DRM Connector Operations 830 */ 831 832 static struct adv7511 *connector_to_adv7511(struct drm_connector *connector) 833 { 834 return container_of(connector, struct adv7511, connector); 835 } 836 837 static int adv7511_connector_get_modes(struct drm_connector *connector) 838 { 839 struct adv7511 *adv = connector_to_adv7511(connector); 840 841 return adv7511_get_modes(adv, connector); 842 } 843 844 static enum drm_mode_status 845 adv7511_connector_mode_valid(struct drm_connector *connector, 846 struct drm_display_mode *mode) 847 { 848 struct adv7511 *adv = connector_to_adv7511(connector); 849 850 return adv7511_mode_valid(adv, mode); 851 } 852 853 static struct drm_connector_helper_funcs adv7511_connector_helper_funcs = { 854 .get_modes = adv7511_connector_get_modes, 855 .mode_valid = adv7511_connector_mode_valid, 856 }; 857 858 static enum drm_connector_status 859 adv7511_connector_detect(struct drm_connector *connector, bool force) 860 { 861 struct adv7511 *adv = connector_to_adv7511(connector); 862 863 return adv7511_detect(adv, connector); 864 } 865 866 static const struct drm_connector_funcs adv7511_connector_funcs = { 867 .fill_modes = drm_helper_probe_single_connector_modes, 868 .detect = adv7511_connector_detect, 869 .destroy = drm_connector_cleanup, 870 .reset = drm_atomic_helper_connector_reset, 871 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, 872 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, 873 }; 874 875 static int adv7511_connector_init(struct adv7511 *adv) 876 { 877 struct drm_bridge *bridge = &adv->bridge; 878 int ret; 879 880 if (!bridge->encoder) { 881 DRM_ERROR("Parent encoder object not found"); 882 return -ENODEV; 883 } 884 885 if (adv->i2c_main->irq) 886 adv->connector.polled = DRM_CONNECTOR_POLL_HPD; 887 else 888 adv->connector.polled = DRM_CONNECTOR_POLL_CONNECT | 889 DRM_CONNECTOR_POLL_DISCONNECT; 890 891 ret = drm_connector_init(bridge->dev, &adv->connector, 892 &adv7511_connector_funcs, 893 DRM_MODE_CONNECTOR_HDMIA); 894 if (ret < 0) { 895 DRM_ERROR("Failed to initialize connector with drm\n"); 896 return ret; 897 } 898 drm_connector_helper_add(&adv->connector, 899 &adv7511_connector_helper_funcs); 900 drm_connector_attach_encoder(&adv->connector, bridge->encoder); 901 902 return 0; 903 } 904 905 /* ----------------------------------------------------------------------------- 906 * DRM Bridge Operations 907 */ 908 909 static struct adv7511 *bridge_to_adv7511(struct drm_bridge *bridge) 910 { 911 return container_of(bridge, struct adv7511, bridge); 912 } 913 914 static void adv7511_bridge_enable(struct drm_bridge *bridge) 915 { 916 struct adv7511 *adv = bridge_to_adv7511(bridge); 917 918 adv7511_power_on(adv); 919 } 920 921 static void adv7511_bridge_disable(struct drm_bridge *bridge) 922 { 923 struct adv7511 *adv = bridge_to_adv7511(bridge); 924 925 adv7511_power_off(adv); 926 } 927 928 static void adv7511_bridge_mode_set(struct drm_bridge *bridge, 929 const struct drm_display_mode *mode, 930 const struct drm_display_mode *adj_mode) 931 { 932 struct adv7511 *adv = bridge_to_adv7511(bridge); 933 934 adv7511_mode_set(adv, mode, adj_mode); 935 } 936 937 static enum drm_mode_status adv7511_bridge_mode_valid(struct drm_bridge *bridge, 938 const struct drm_display_info *info, 939 const struct drm_display_mode *mode) 940 { 941 struct adv7511 *adv = bridge_to_adv7511(bridge); 942 943 if (adv->info->has_dsi) 944 return adv7533_mode_valid(adv, mode); 945 else 946 return adv7511_mode_valid(adv, mode); 947 } 948 949 static int adv7511_bridge_attach(struct drm_bridge *bridge, 950 enum drm_bridge_attach_flags flags) 951 { 952 struct adv7511 *adv = bridge_to_adv7511(bridge); 953 int ret = 0; 954 955 if (adv->next_bridge) { 956 ret = drm_bridge_attach(bridge->encoder, adv->next_bridge, bridge, 957 flags | DRM_BRIDGE_ATTACH_NO_CONNECTOR); 958 if (ret) 959 return ret; 960 } 961 962 if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) { 963 ret = adv7511_connector_init(adv); 964 if (ret < 0) 965 return ret; 966 } 967 968 if (adv->i2c_main->irq) 969 regmap_write(adv->regmap, ADV7511_REG_INT_ENABLE(0), 970 ADV7511_INT0_HPD); 971 972 return ret; 973 } 974 975 static enum drm_connector_status adv7511_bridge_detect(struct drm_bridge *bridge) 976 { 977 struct adv7511 *adv = bridge_to_adv7511(bridge); 978 979 return adv7511_detect(adv, NULL); 980 } 981 982 static const struct drm_edid *adv7511_bridge_edid_read(struct drm_bridge *bridge, 983 struct drm_connector *connector) 984 { 985 struct adv7511 *adv = bridge_to_adv7511(bridge); 986 987 return adv7511_edid_read(adv, connector); 988 } 989 990 static void adv7511_bridge_hpd_notify(struct drm_bridge *bridge, 991 enum drm_connector_status status) 992 { 993 struct adv7511 *adv = bridge_to_adv7511(bridge); 994 995 if (status == connector_status_disconnected) 996 cec_phys_addr_invalidate(adv->cec_adap); 997 } 998 999 static const struct drm_bridge_funcs adv7511_bridge_funcs = { 1000 .enable = adv7511_bridge_enable, 1001 .disable = adv7511_bridge_disable, 1002 .mode_set = adv7511_bridge_mode_set, 1003 .mode_valid = adv7511_bridge_mode_valid, 1004 .attach = adv7511_bridge_attach, 1005 .detect = adv7511_bridge_detect, 1006 .edid_read = adv7511_bridge_edid_read, 1007 .hpd_notify = adv7511_bridge_hpd_notify, 1008 }; 1009 1010 /* ----------------------------------------------------------------------------- 1011 * Probe & remove 1012 */ 1013 1014 static const char * const adv7511_supply_names[] = { 1015 "avdd", 1016 "dvdd", 1017 "pvdd", 1018 "bgvdd", 1019 "dvdd-3v", 1020 }; 1021 1022 static const char * const adv7533_supply_names[] = { 1023 "avdd", 1024 "dvdd", 1025 "pvdd", 1026 "a2vdd", 1027 "v3p3", 1028 "v1p2", 1029 }; 1030 1031 static int adv7511_init_regulators(struct adv7511 *adv) 1032 { 1033 const char * const *supply_names = adv->info->supply_names; 1034 unsigned int num_supplies = adv->info->num_supplies; 1035 struct device *dev = &adv->i2c_main->dev; 1036 unsigned int i; 1037 int ret; 1038 1039 adv->supplies = devm_kcalloc(dev, num_supplies, 1040 sizeof(*adv->supplies), GFP_KERNEL); 1041 if (!adv->supplies) 1042 return -ENOMEM; 1043 1044 for (i = 0; i < num_supplies; i++) 1045 adv->supplies[i].supply = supply_names[i]; 1046 1047 ret = devm_regulator_bulk_get(dev, num_supplies, adv->supplies); 1048 if (ret) 1049 return ret; 1050 1051 return regulator_bulk_enable(num_supplies, adv->supplies); 1052 } 1053 1054 static void adv7511_uninit_regulators(struct adv7511 *adv) 1055 { 1056 regulator_bulk_disable(adv->info->num_supplies, adv->supplies); 1057 } 1058 1059 static bool adv7511_cec_register_volatile(struct device *dev, unsigned int reg) 1060 { 1061 struct i2c_client *i2c = to_i2c_client(dev); 1062 struct adv7511 *adv7511 = i2c_get_clientdata(i2c); 1063 1064 reg -= adv7511->info->reg_cec_offset; 1065 1066 switch (reg) { 1067 case ADV7511_REG_CEC_RX1_FRAME_HDR: 1068 case ADV7511_REG_CEC_RX1_FRAME_DATA0 ... ADV7511_REG_CEC_RX1_FRAME_DATA0 + 14: 1069 case ADV7511_REG_CEC_RX1_FRAME_LEN: 1070 case ADV7511_REG_CEC_RX2_FRAME_HDR: 1071 case ADV7511_REG_CEC_RX2_FRAME_DATA0 ... ADV7511_REG_CEC_RX2_FRAME_DATA0 + 14: 1072 case ADV7511_REG_CEC_RX2_FRAME_LEN: 1073 case ADV7511_REG_CEC_RX3_FRAME_HDR: 1074 case ADV7511_REG_CEC_RX3_FRAME_DATA0 ... ADV7511_REG_CEC_RX3_FRAME_DATA0 + 14: 1075 case ADV7511_REG_CEC_RX3_FRAME_LEN: 1076 case ADV7511_REG_CEC_RX_STATUS: 1077 case ADV7511_REG_CEC_RX_BUFFERS: 1078 case ADV7511_REG_CEC_TX_LOW_DRV_CNT: 1079 return true; 1080 } 1081 1082 return false; 1083 } 1084 1085 static const struct regmap_config adv7511_cec_regmap_config = { 1086 .reg_bits = 8, 1087 .val_bits = 8, 1088 1089 .max_register = 0xff, 1090 .cache_type = REGCACHE_MAPLE, 1091 .volatile_reg = adv7511_cec_register_volatile, 1092 }; 1093 1094 static int adv7511_init_cec_regmap(struct adv7511 *adv) 1095 { 1096 int ret; 1097 1098 adv->i2c_cec = i2c_new_ancillary_device(adv->i2c_main, "cec", 1099 ADV7511_CEC_I2C_ADDR_DEFAULT); 1100 if (IS_ERR(adv->i2c_cec)) 1101 return PTR_ERR(adv->i2c_cec); 1102 1103 regmap_write(adv->regmap, ADV7511_REG_CEC_I2C_ADDR, 1104 adv->i2c_cec->addr << 1); 1105 1106 i2c_set_clientdata(adv->i2c_cec, adv); 1107 1108 adv->regmap_cec = devm_regmap_init_i2c(adv->i2c_cec, 1109 &adv7511_cec_regmap_config); 1110 if (IS_ERR(adv->regmap_cec)) { 1111 ret = PTR_ERR(adv->regmap_cec); 1112 goto err; 1113 } 1114 1115 if (adv->info->reg_cec_offset == ADV7533_REG_CEC_OFFSET) { 1116 ret = adv7533_patch_cec_registers(adv); 1117 if (ret) 1118 goto err; 1119 } 1120 1121 return 0; 1122 err: 1123 i2c_unregister_device(adv->i2c_cec); 1124 return ret; 1125 } 1126 1127 static int adv7511_parse_dt(struct device_node *np, 1128 struct adv7511_link_config *config) 1129 { 1130 const char *str; 1131 int ret; 1132 1133 of_property_read_u32(np, "adi,input-depth", &config->input_color_depth); 1134 if (config->input_color_depth != 8 && config->input_color_depth != 10 && 1135 config->input_color_depth != 12) 1136 return -EINVAL; 1137 1138 ret = of_property_read_string(np, "adi,input-colorspace", &str); 1139 if (ret < 0) 1140 return ret; 1141 1142 if (!strcmp(str, "rgb")) 1143 config->input_colorspace = HDMI_COLORSPACE_RGB; 1144 else if (!strcmp(str, "yuv422")) 1145 config->input_colorspace = HDMI_COLORSPACE_YUV422; 1146 else if (!strcmp(str, "yuv444")) 1147 config->input_colorspace = HDMI_COLORSPACE_YUV444; 1148 else 1149 return -EINVAL; 1150 1151 ret = of_property_read_string(np, "adi,input-clock", &str); 1152 if (ret < 0) 1153 return ret; 1154 1155 if (!strcmp(str, "1x")) 1156 config->input_clock = ADV7511_INPUT_CLOCK_1X; 1157 else if (!strcmp(str, "2x")) 1158 config->input_clock = ADV7511_INPUT_CLOCK_2X; 1159 else if (!strcmp(str, "ddr")) 1160 config->input_clock = ADV7511_INPUT_CLOCK_DDR; 1161 else 1162 return -EINVAL; 1163 1164 if (config->input_colorspace == HDMI_COLORSPACE_YUV422 || 1165 config->input_clock != ADV7511_INPUT_CLOCK_1X) { 1166 ret = of_property_read_u32(np, "adi,input-style", 1167 &config->input_style); 1168 if (ret) 1169 return ret; 1170 1171 if (config->input_style < 1 || config->input_style > 3) 1172 return -EINVAL; 1173 1174 ret = of_property_read_string(np, "adi,input-justification", 1175 &str); 1176 if (ret < 0) 1177 return ret; 1178 1179 if (!strcmp(str, "left")) 1180 config->input_justification = 1181 ADV7511_INPUT_JUSTIFICATION_LEFT; 1182 else if (!strcmp(str, "evenly")) 1183 config->input_justification = 1184 ADV7511_INPUT_JUSTIFICATION_EVENLY; 1185 else if (!strcmp(str, "right")) 1186 config->input_justification = 1187 ADV7511_INPUT_JUSTIFICATION_RIGHT; 1188 else 1189 return -EINVAL; 1190 1191 } else { 1192 config->input_style = 1; 1193 config->input_justification = ADV7511_INPUT_JUSTIFICATION_LEFT; 1194 } 1195 1196 of_property_read_u32(np, "adi,clock-delay", &config->clock_delay); 1197 if (config->clock_delay < -1200 || config->clock_delay > 1600) 1198 return -EINVAL; 1199 1200 config->embedded_sync = of_property_read_bool(np, "adi,embedded-sync"); 1201 1202 /* Hardcode the sync pulse configurations for now. */ 1203 config->sync_pulse = ADV7511_INPUT_SYNC_PULSE_NONE; 1204 config->vsync_polarity = ADV7511_SYNC_POLARITY_PASSTHROUGH; 1205 config->hsync_polarity = ADV7511_SYNC_POLARITY_PASSTHROUGH; 1206 1207 return 0; 1208 } 1209 1210 static int adv7511_probe(struct i2c_client *i2c) 1211 { 1212 struct adv7511_link_config link_config; 1213 struct adv7511 *adv7511; 1214 struct device *dev = &i2c->dev; 1215 unsigned int val; 1216 int ret; 1217 1218 if (!dev->of_node) 1219 return -EINVAL; 1220 1221 adv7511 = devm_kzalloc(dev, sizeof(*adv7511), GFP_KERNEL); 1222 if (!adv7511) 1223 return -ENOMEM; 1224 1225 adv7511->i2c_main = i2c; 1226 adv7511->powered = false; 1227 adv7511->status = connector_status_disconnected; 1228 adv7511->info = i2c_get_match_data(i2c); 1229 1230 memset(&link_config, 0, sizeof(link_config)); 1231 1232 ret = drm_of_find_panel_or_bridge(dev->of_node, 1, -1, NULL, 1233 &adv7511->next_bridge); 1234 if (ret && ret != -ENODEV) 1235 return ret; 1236 1237 if (adv7511->info->link_config) 1238 ret = adv7511_parse_dt(dev->of_node, &link_config); 1239 else 1240 ret = adv7533_parse_dt(dev->of_node, adv7511); 1241 if (ret) 1242 return ret; 1243 1244 ret = adv7511_init_regulators(adv7511); 1245 if (ret) 1246 return dev_err_probe(dev, ret, "failed to init regulators\n"); 1247 1248 /* 1249 * The power down GPIO is optional. If present, toggle it from active to 1250 * inactive to wake up the encoder. 1251 */ 1252 adv7511->gpio_pd = devm_gpiod_get_optional(dev, "pd", GPIOD_OUT_HIGH); 1253 if (IS_ERR(adv7511->gpio_pd)) { 1254 ret = PTR_ERR(adv7511->gpio_pd); 1255 goto uninit_regulators; 1256 } 1257 1258 if (adv7511->gpio_pd) { 1259 usleep_range(5000, 6000); 1260 gpiod_set_value_cansleep(adv7511->gpio_pd, 0); 1261 } 1262 1263 adv7511->regmap = devm_regmap_init_i2c(i2c, &adv7511_regmap_config); 1264 if (IS_ERR(adv7511->regmap)) { 1265 ret = PTR_ERR(adv7511->regmap); 1266 goto uninit_regulators; 1267 } 1268 1269 ret = regmap_read(adv7511->regmap, ADV7511_REG_CHIP_REVISION, &val); 1270 if (ret) 1271 goto uninit_regulators; 1272 dev_dbg(dev, "Rev. %d\n", val); 1273 1274 if (adv7511->info->type == ADV7511) 1275 ret = regmap_register_patch(adv7511->regmap, 1276 adv7511_fixed_registers, 1277 ARRAY_SIZE(adv7511_fixed_registers)); 1278 else 1279 ret = adv7533_patch_registers(adv7511); 1280 if (ret) 1281 goto uninit_regulators; 1282 1283 adv7511_packet_disable(adv7511, 0xffff); 1284 1285 adv7511->i2c_edid = i2c_new_ancillary_device(i2c, "edid", 1286 ADV7511_EDID_I2C_ADDR_DEFAULT); 1287 if (IS_ERR(adv7511->i2c_edid)) { 1288 ret = PTR_ERR(adv7511->i2c_edid); 1289 goto uninit_regulators; 1290 } 1291 1292 regmap_write(adv7511->regmap, ADV7511_REG_EDID_I2C_ADDR, 1293 adv7511->i2c_edid->addr << 1); 1294 1295 adv7511->i2c_packet = i2c_new_ancillary_device(i2c, "packet", 1296 ADV7511_PACKET_I2C_ADDR_DEFAULT); 1297 if (IS_ERR(adv7511->i2c_packet)) { 1298 ret = PTR_ERR(adv7511->i2c_packet); 1299 goto err_i2c_unregister_edid; 1300 } 1301 1302 regmap_write(adv7511->regmap, ADV7511_REG_PACKET_I2C_ADDR, 1303 adv7511->i2c_packet->addr << 1); 1304 1305 ret = adv7511_init_cec_regmap(adv7511); 1306 if (ret) 1307 goto err_i2c_unregister_packet; 1308 1309 INIT_WORK(&adv7511->hpd_work, adv7511_hpd_work); 1310 1311 adv7511_power_off(adv7511); 1312 1313 i2c_set_clientdata(i2c, adv7511); 1314 1315 if (adv7511->info->link_config) 1316 adv7511_set_link_config(adv7511, &link_config); 1317 1318 ret = adv7511_cec_init(dev, adv7511); 1319 if (ret) 1320 goto err_unregister_cec; 1321 1322 adv7511->bridge.funcs = &adv7511_bridge_funcs; 1323 adv7511->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID; 1324 if (adv7511->i2c_main->irq) 1325 adv7511->bridge.ops |= DRM_BRIDGE_OP_HPD; 1326 1327 adv7511->bridge.of_node = dev->of_node; 1328 adv7511->bridge.type = DRM_MODE_CONNECTOR_HDMIA; 1329 1330 drm_bridge_add(&adv7511->bridge); 1331 1332 adv7511_audio_init(dev, adv7511); 1333 1334 if (i2c->irq) { 1335 init_waitqueue_head(&adv7511->wq); 1336 1337 ret = devm_request_threaded_irq(dev, i2c->irq, NULL, 1338 adv7511_irq_handler, 1339 IRQF_ONESHOT | IRQF_SHARED, 1340 dev_name(dev), 1341 adv7511); 1342 if (ret) 1343 goto err_unregister_audio; 1344 } 1345 1346 if (adv7511->info->has_dsi) { 1347 ret = adv7533_attach_dsi(adv7511); 1348 if (ret) 1349 goto err_unregister_audio; 1350 } 1351 1352 return 0; 1353 1354 err_unregister_audio: 1355 adv7511_audio_exit(adv7511); 1356 drm_bridge_remove(&adv7511->bridge); 1357 err_unregister_cec: 1358 cec_unregister_adapter(adv7511->cec_adap); 1359 i2c_unregister_device(adv7511->i2c_cec); 1360 clk_disable_unprepare(adv7511->cec_clk); 1361 err_i2c_unregister_packet: 1362 i2c_unregister_device(adv7511->i2c_packet); 1363 err_i2c_unregister_edid: 1364 i2c_unregister_device(adv7511->i2c_edid); 1365 uninit_regulators: 1366 adv7511_uninit_regulators(adv7511); 1367 1368 return ret; 1369 } 1370 1371 static void adv7511_remove(struct i2c_client *i2c) 1372 { 1373 struct adv7511 *adv7511 = i2c_get_clientdata(i2c); 1374 1375 adv7511_uninit_regulators(adv7511); 1376 1377 drm_bridge_remove(&adv7511->bridge); 1378 1379 adv7511_audio_exit(adv7511); 1380 1381 cec_unregister_adapter(adv7511->cec_adap); 1382 i2c_unregister_device(adv7511->i2c_cec); 1383 clk_disable_unprepare(adv7511->cec_clk); 1384 1385 i2c_unregister_device(adv7511->i2c_packet); 1386 i2c_unregister_device(adv7511->i2c_edid); 1387 } 1388 1389 static const struct adv7511_chip_info adv7511_chip_info = { 1390 .type = ADV7511, 1391 .supply_names = adv7511_supply_names, 1392 .num_supplies = ARRAY_SIZE(adv7511_supply_names), 1393 .link_config = true, 1394 }; 1395 1396 static const struct adv7511_chip_info adv7533_chip_info = { 1397 .type = ADV7533, 1398 .max_mode_clock_khz = 80000, 1399 .max_lane_freq_khz = 800000, 1400 .supply_names = adv7533_supply_names, 1401 .num_supplies = ARRAY_SIZE(adv7533_supply_names), 1402 .reg_cec_offset = ADV7533_REG_CEC_OFFSET, 1403 .has_dsi = true, 1404 }; 1405 1406 static const struct adv7511_chip_info adv7535_chip_info = { 1407 .type = ADV7535, 1408 .max_mode_clock_khz = 148500, 1409 .max_lane_freq_khz = 891000, 1410 .supply_names = adv7533_supply_names, 1411 .num_supplies = ARRAY_SIZE(adv7533_supply_names), 1412 .reg_cec_offset = ADV7533_REG_CEC_OFFSET, 1413 .has_dsi = true, 1414 .hpd_override_enable = true, 1415 }; 1416 1417 static const struct i2c_device_id adv7511_i2c_ids[] = { 1418 { "adv7511", (kernel_ulong_t)&adv7511_chip_info }, 1419 { "adv7511w", (kernel_ulong_t)&adv7511_chip_info }, 1420 { "adv7513", (kernel_ulong_t)&adv7511_chip_info }, 1421 { "adv7533", (kernel_ulong_t)&adv7533_chip_info }, 1422 { "adv7535", (kernel_ulong_t)&adv7535_chip_info }, 1423 { } 1424 }; 1425 MODULE_DEVICE_TABLE(i2c, adv7511_i2c_ids); 1426 1427 static const struct of_device_id adv7511_of_ids[] = { 1428 { .compatible = "adi,adv7511", .data = &adv7511_chip_info }, 1429 { .compatible = "adi,adv7511w", .data = &adv7511_chip_info }, 1430 { .compatible = "adi,adv7513", .data = &adv7511_chip_info }, 1431 { .compatible = "adi,adv7533", .data = &adv7533_chip_info }, 1432 { .compatible = "adi,adv7535", .data = &adv7535_chip_info }, 1433 { } 1434 }; 1435 MODULE_DEVICE_TABLE(of, adv7511_of_ids); 1436 1437 static struct mipi_dsi_driver adv7533_dsi_driver = { 1438 .driver.name = "adv7533", 1439 }; 1440 1441 static struct i2c_driver adv7511_driver = { 1442 .driver = { 1443 .name = "adv7511", 1444 .of_match_table = adv7511_of_ids, 1445 }, 1446 .id_table = adv7511_i2c_ids, 1447 .probe = adv7511_probe, 1448 .remove = adv7511_remove, 1449 }; 1450 1451 static int __init adv7511_init(void) 1452 { 1453 int ret; 1454 1455 if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) { 1456 ret = mipi_dsi_driver_register(&adv7533_dsi_driver); 1457 if (ret) 1458 return ret; 1459 } 1460 1461 ret = i2c_add_driver(&adv7511_driver); 1462 if (ret) { 1463 if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) 1464 mipi_dsi_driver_unregister(&adv7533_dsi_driver); 1465 } 1466 1467 return ret; 1468 } 1469 module_init(adv7511_init); 1470 1471 static void __exit adv7511_exit(void) 1472 { 1473 i2c_del_driver(&adv7511_driver); 1474 1475 if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) 1476 mipi_dsi_driver_unregister(&adv7533_dsi_driver); 1477 } 1478 module_exit(adv7511_exit); 1479 1480 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>"); 1481 MODULE_DESCRIPTION("ADV7511 HDMI transmitter driver"); 1482 MODULE_LICENSE("GPL"); 1483