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 (adv->i2c_main->irq) 881 adv->connector.polled = DRM_CONNECTOR_POLL_HPD; 882 else 883 adv->connector.polled = DRM_CONNECTOR_POLL_CONNECT | 884 DRM_CONNECTOR_POLL_DISCONNECT; 885 886 ret = drm_connector_init(bridge->dev, &adv->connector, 887 &adv7511_connector_funcs, 888 DRM_MODE_CONNECTOR_HDMIA); 889 if (ret < 0) { 890 DRM_ERROR("Failed to initialize connector with drm\n"); 891 return ret; 892 } 893 drm_connector_helper_add(&adv->connector, 894 &adv7511_connector_helper_funcs); 895 drm_connector_attach_encoder(&adv->connector, bridge->encoder); 896 897 return 0; 898 } 899 900 /* ----------------------------------------------------------------------------- 901 * DRM Bridge Operations 902 */ 903 904 static struct adv7511 *bridge_to_adv7511(struct drm_bridge *bridge) 905 { 906 return container_of(bridge, struct adv7511, bridge); 907 } 908 909 static void adv7511_bridge_enable(struct drm_bridge *bridge) 910 { 911 struct adv7511 *adv = bridge_to_adv7511(bridge); 912 913 adv7511_power_on(adv); 914 } 915 916 static void adv7511_bridge_disable(struct drm_bridge *bridge) 917 { 918 struct adv7511 *adv = bridge_to_adv7511(bridge); 919 920 adv7511_power_off(adv); 921 } 922 923 static void adv7511_bridge_mode_set(struct drm_bridge *bridge, 924 const struct drm_display_mode *mode, 925 const struct drm_display_mode *adj_mode) 926 { 927 struct adv7511 *adv = bridge_to_adv7511(bridge); 928 929 adv7511_mode_set(adv, mode, adj_mode); 930 } 931 932 static enum drm_mode_status adv7511_bridge_mode_valid(struct drm_bridge *bridge, 933 const struct drm_display_info *info, 934 const struct drm_display_mode *mode) 935 { 936 struct adv7511 *adv = bridge_to_adv7511(bridge); 937 938 if (adv->info->has_dsi) 939 return adv7533_mode_valid(adv, mode); 940 else 941 return adv7511_mode_valid(adv, mode); 942 } 943 944 static int adv7511_bridge_attach(struct drm_bridge *bridge, 945 enum drm_bridge_attach_flags flags) 946 { 947 struct adv7511 *adv = bridge_to_adv7511(bridge); 948 int ret = 0; 949 950 if (adv->next_bridge) { 951 ret = drm_bridge_attach(bridge->encoder, adv->next_bridge, bridge, 952 flags | DRM_BRIDGE_ATTACH_NO_CONNECTOR); 953 if (ret) 954 return ret; 955 } 956 957 if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) { 958 ret = adv7511_connector_init(adv); 959 if (ret < 0) 960 return ret; 961 } 962 963 if (adv->i2c_main->irq) 964 regmap_write(adv->regmap, ADV7511_REG_INT_ENABLE(0), 965 ADV7511_INT0_HPD); 966 967 return ret; 968 } 969 970 static enum drm_connector_status adv7511_bridge_detect(struct drm_bridge *bridge) 971 { 972 struct adv7511 *adv = bridge_to_adv7511(bridge); 973 974 return adv7511_detect(adv, NULL); 975 } 976 977 static const struct drm_edid *adv7511_bridge_edid_read(struct drm_bridge *bridge, 978 struct drm_connector *connector) 979 { 980 struct adv7511 *adv = bridge_to_adv7511(bridge); 981 982 return adv7511_edid_read(adv, connector); 983 } 984 985 static void adv7511_bridge_hpd_notify(struct drm_bridge *bridge, 986 enum drm_connector_status status) 987 { 988 struct adv7511 *adv = bridge_to_adv7511(bridge); 989 990 if (status == connector_status_disconnected) 991 cec_phys_addr_invalidate(adv->cec_adap); 992 } 993 994 static const struct drm_bridge_funcs adv7511_bridge_funcs = { 995 .enable = adv7511_bridge_enable, 996 .disable = adv7511_bridge_disable, 997 .mode_set = adv7511_bridge_mode_set, 998 .mode_valid = adv7511_bridge_mode_valid, 999 .attach = adv7511_bridge_attach, 1000 .detect = adv7511_bridge_detect, 1001 .edid_read = adv7511_bridge_edid_read, 1002 .hpd_notify = adv7511_bridge_hpd_notify, 1003 }; 1004 1005 /* ----------------------------------------------------------------------------- 1006 * Probe & remove 1007 */ 1008 1009 static const char * const adv7511_supply_names[] = { 1010 "avdd", 1011 "dvdd", 1012 "pvdd", 1013 "bgvdd", 1014 "dvdd-3v", 1015 }; 1016 1017 static const char * const adv7533_supply_names[] = { 1018 "avdd", 1019 "dvdd", 1020 "pvdd", 1021 "a2vdd", 1022 "v3p3", 1023 "v1p2", 1024 }; 1025 1026 static int adv7511_init_regulators(struct adv7511 *adv) 1027 { 1028 const char * const *supply_names = adv->info->supply_names; 1029 unsigned int num_supplies = adv->info->num_supplies; 1030 struct device *dev = &adv->i2c_main->dev; 1031 unsigned int i; 1032 int ret; 1033 1034 adv->supplies = devm_kcalloc(dev, num_supplies, 1035 sizeof(*adv->supplies), GFP_KERNEL); 1036 if (!adv->supplies) 1037 return -ENOMEM; 1038 1039 for (i = 0; i < num_supplies; i++) 1040 adv->supplies[i].supply = supply_names[i]; 1041 1042 ret = devm_regulator_bulk_get(dev, num_supplies, adv->supplies); 1043 if (ret) 1044 return ret; 1045 1046 return regulator_bulk_enable(num_supplies, adv->supplies); 1047 } 1048 1049 static void adv7511_uninit_regulators(struct adv7511 *adv) 1050 { 1051 regulator_bulk_disable(adv->info->num_supplies, adv->supplies); 1052 } 1053 1054 static bool adv7511_cec_register_volatile(struct device *dev, unsigned int reg) 1055 { 1056 struct i2c_client *i2c = to_i2c_client(dev); 1057 struct adv7511 *adv7511 = i2c_get_clientdata(i2c); 1058 1059 reg -= adv7511->info->reg_cec_offset; 1060 1061 switch (reg) { 1062 case ADV7511_REG_CEC_RX1_FRAME_HDR: 1063 case ADV7511_REG_CEC_RX1_FRAME_DATA0 ... ADV7511_REG_CEC_RX1_FRAME_DATA0 + 14: 1064 case ADV7511_REG_CEC_RX1_FRAME_LEN: 1065 case ADV7511_REG_CEC_RX2_FRAME_HDR: 1066 case ADV7511_REG_CEC_RX2_FRAME_DATA0 ... ADV7511_REG_CEC_RX2_FRAME_DATA0 + 14: 1067 case ADV7511_REG_CEC_RX2_FRAME_LEN: 1068 case ADV7511_REG_CEC_RX3_FRAME_HDR: 1069 case ADV7511_REG_CEC_RX3_FRAME_DATA0 ... ADV7511_REG_CEC_RX3_FRAME_DATA0 + 14: 1070 case ADV7511_REG_CEC_RX3_FRAME_LEN: 1071 case ADV7511_REG_CEC_RX_STATUS: 1072 case ADV7511_REG_CEC_RX_BUFFERS: 1073 case ADV7511_REG_CEC_TX_LOW_DRV_CNT: 1074 return true; 1075 } 1076 1077 return false; 1078 } 1079 1080 static const struct regmap_config adv7511_cec_regmap_config = { 1081 .reg_bits = 8, 1082 .val_bits = 8, 1083 1084 .max_register = 0xff, 1085 .cache_type = REGCACHE_MAPLE, 1086 .volatile_reg = adv7511_cec_register_volatile, 1087 }; 1088 1089 static int adv7511_init_cec_regmap(struct adv7511 *adv) 1090 { 1091 int ret; 1092 1093 adv->i2c_cec = i2c_new_ancillary_device(adv->i2c_main, "cec", 1094 ADV7511_CEC_I2C_ADDR_DEFAULT); 1095 if (IS_ERR(adv->i2c_cec)) 1096 return PTR_ERR(adv->i2c_cec); 1097 1098 regmap_write(adv->regmap, ADV7511_REG_CEC_I2C_ADDR, 1099 adv->i2c_cec->addr << 1); 1100 1101 i2c_set_clientdata(adv->i2c_cec, adv); 1102 1103 adv->regmap_cec = devm_regmap_init_i2c(adv->i2c_cec, 1104 &adv7511_cec_regmap_config); 1105 if (IS_ERR(adv->regmap_cec)) { 1106 ret = PTR_ERR(adv->regmap_cec); 1107 goto err; 1108 } 1109 1110 if (adv->info->reg_cec_offset == ADV7533_REG_CEC_OFFSET) { 1111 ret = adv7533_patch_cec_registers(adv); 1112 if (ret) 1113 goto err; 1114 } 1115 1116 return 0; 1117 err: 1118 i2c_unregister_device(adv->i2c_cec); 1119 return ret; 1120 } 1121 1122 static int adv7511_parse_dt(struct device_node *np, 1123 struct adv7511_link_config *config) 1124 { 1125 const char *str; 1126 int ret; 1127 1128 of_property_read_u32(np, "adi,input-depth", &config->input_color_depth); 1129 if (config->input_color_depth != 8 && config->input_color_depth != 10 && 1130 config->input_color_depth != 12) 1131 return -EINVAL; 1132 1133 ret = of_property_read_string(np, "adi,input-colorspace", &str); 1134 if (ret < 0) 1135 return ret; 1136 1137 if (!strcmp(str, "rgb")) 1138 config->input_colorspace = HDMI_COLORSPACE_RGB; 1139 else if (!strcmp(str, "yuv422")) 1140 config->input_colorspace = HDMI_COLORSPACE_YUV422; 1141 else if (!strcmp(str, "yuv444")) 1142 config->input_colorspace = HDMI_COLORSPACE_YUV444; 1143 else 1144 return -EINVAL; 1145 1146 ret = of_property_read_string(np, "adi,input-clock", &str); 1147 if (ret < 0) 1148 return ret; 1149 1150 if (!strcmp(str, "1x")) 1151 config->input_clock = ADV7511_INPUT_CLOCK_1X; 1152 else if (!strcmp(str, "2x")) 1153 config->input_clock = ADV7511_INPUT_CLOCK_2X; 1154 else if (!strcmp(str, "ddr")) 1155 config->input_clock = ADV7511_INPUT_CLOCK_DDR; 1156 else 1157 return -EINVAL; 1158 1159 if (config->input_colorspace == HDMI_COLORSPACE_YUV422 || 1160 config->input_clock != ADV7511_INPUT_CLOCK_1X) { 1161 ret = of_property_read_u32(np, "adi,input-style", 1162 &config->input_style); 1163 if (ret) 1164 return ret; 1165 1166 if (config->input_style < 1 || config->input_style > 3) 1167 return -EINVAL; 1168 1169 ret = of_property_read_string(np, "adi,input-justification", 1170 &str); 1171 if (ret < 0) 1172 return ret; 1173 1174 if (!strcmp(str, "left")) 1175 config->input_justification = 1176 ADV7511_INPUT_JUSTIFICATION_LEFT; 1177 else if (!strcmp(str, "evenly")) 1178 config->input_justification = 1179 ADV7511_INPUT_JUSTIFICATION_EVENLY; 1180 else if (!strcmp(str, "right")) 1181 config->input_justification = 1182 ADV7511_INPUT_JUSTIFICATION_RIGHT; 1183 else 1184 return -EINVAL; 1185 1186 } else { 1187 config->input_style = 1; 1188 config->input_justification = ADV7511_INPUT_JUSTIFICATION_LEFT; 1189 } 1190 1191 of_property_read_u32(np, "adi,clock-delay", &config->clock_delay); 1192 if (config->clock_delay < -1200 || config->clock_delay > 1600) 1193 return -EINVAL; 1194 1195 config->embedded_sync = of_property_read_bool(np, "adi,embedded-sync"); 1196 1197 /* Hardcode the sync pulse configurations for now. */ 1198 config->sync_pulse = ADV7511_INPUT_SYNC_PULSE_NONE; 1199 config->vsync_polarity = ADV7511_SYNC_POLARITY_PASSTHROUGH; 1200 config->hsync_polarity = ADV7511_SYNC_POLARITY_PASSTHROUGH; 1201 1202 return 0; 1203 } 1204 1205 static int adv7511_probe(struct i2c_client *i2c) 1206 { 1207 struct adv7511_link_config link_config; 1208 struct adv7511 *adv7511; 1209 struct device *dev = &i2c->dev; 1210 unsigned int val; 1211 int ret; 1212 1213 if (!dev->of_node) 1214 return -EINVAL; 1215 1216 adv7511 = devm_kzalloc(dev, sizeof(*adv7511), GFP_KERNEL); 1217 if (!adv7511) 1218 return -ENOMEM; 1219 1220 adv7511->i2c_main = i2c; 1221 adv7511->powered = false; 1222 adv7511->status = connector_status_disconnected; 1223 adv7511->info = i2c_get_match_data(i2c); 1224 1225 memset(&link_config, 0, sizeof(link_config)); 1226 1227 ret = drm_of_find_panel_or_bridge(dev->of_node, 1, -1, NULL, 1228 &adv7511->next_bridge); 1229 if (ret && ret != -ENODEV) 1230 return ret; 1231 1232 if (adv7511->info->link_config) 1233 ret = adv7511_parse_dt(dev->of_node, &link_config); 1234 else 1235 ret = adv7533_parse_dt(dev->of_node, adv7511); 1236 if (ret) 1237 return ret; 1238 1239 ret = adv7511_init_regulators(adv7511); 1240 if (ret) 1241 return dev_err_probe(dev, ret, "failed to init regulators\n"); 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 regmap_write(adv7511->regmap, ADV7511_REG_PACKET_I2C_ADDR, 1298 adv7511->i2c_packet->addr << 1); 1299 1300 ret = adv7511_init_cec_regmap(adv7511); 1301 if (ret) 1302 goto err_i2c_unregister_packet; 1303 1304 INIT_WORK(&adv7511->hpd_work, adv7511_hpd_work); 1305 1306 adv7511_power_off(adv7511); 1307 1308 i2c_set_clientdata(i2c, adv7511); 1309 1310 if (adv7511->info->link_config) 1311 adv7511_set_link_config(adv7511, &link_config); 1312 1313 ret = adv7511_cec_init(dev, adv7511); 1314 if (ret) 1315 goto err_unregister_cec; 1316 1317 adv7511->bridge.funcs = &adv7511_bridge_funcs; 1318 adv7511->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID; 1319 if (adv7511->i2c_main->irq) 1320 adv7511->bridge.ops |= DRM_BRIDGE_OP_HPD; 1321 1322 adv7511->bridge.of_node = dev->of_node; 1323 adv7511->bridge.type = DRM_MODE_CONNECTOR_HDMIA; 1324 1325 drm_bridge_add(&adv7511->bridge); 1326 1327 adv7511_audio_init(dev, adv7511); 1328 1329 if (i2c->irq) { 1330 init_waitqueue_head(&adv7511->wq); 1331 1332 ret = devm_request_threaded_irq(dev, i2c->irq, NULL, 1333 adv7511_irq_handler, 1334 IRQF_ONESHOT | IRQF_SHARED, 1335 dev_name(dev), 1336 adv7511); 1337 if (ret) 1338 goto err_unregister_audio; 1339 } 1340 1341 if (adv7511->info->has_dsi) { 1342 ret = adv7533_attach_dsi(adv7511); 1343 if (ret) 1344 goto err_unregister_audio; 1345 } 1346 1347 return 0; 1348 1349 err_unregister_audio: 1350 adv7511_audio_exit(adv7511); 1351 drm_bridge_remove(&adv7511->bridge); 1352 err_unregister_cec: 1353 cec_unregister_adapter(adv7511->cec_adap); 1354 i2c_unregister_device(adv7511->i2c_cec); 1355 clk_disable_unprepare(adv7511->cec_clk); 1356 err_i2c_unregister_packet: 1357 i2c_unregister_device(adv7511->i2c_packet); 1358 err_i2c_unregister_edid: 1359 i2c_unregister_device(adv7511->i2c_edid); 1360 uninit_regulators: 1361 adv7511_uninit_regulators(adv7511); 1362 1363 return ret; 1364 } 1365 1366 static void adv7511_remove(struct i2c_client *i2c) 1367 { 1368 struct adv7511 *adv7511 = i2c_get_clientdata(i2c); 1369 1370 adv7511_uninit_regulators(adv7511); 1371 1372 drm_bridge_remove(&adv7511->bridge); 1373 1374 adv7511_audio_exit(adv7511); 1375 1376 cec_unregister_adapter(adv7511->cec_adap); 1377 i2c_unregister_device(adv7511->i2c_cec); 1378 clk_disable_unprepare(adv7511->cec_clk); 1379 1380 i2c_unregister_device(adv7511->i2c_packet); 1381 i2c_unregister_device(adv7511->i2c_edid); 1382 } 1383 1384 static const struct adv7511_chip_info adv7511_chip_info = { 1385 .type = ADV7511, 1386 .supply_names = adv7511_supply_names, 1387 .num_supplies = ARRAY_SIZE(adv7511_supply_names), 1388 .link_config = true, 1389 }; 1390 1391 static const struct adv7511_chip_info adv7533_chip_info = { 1392 .type = ADV7533, 1393 .max_mode_clock_khz = 80000, 1394 .max_lane_freq_khz = 800000, 1395 .supply_names = adv7533_supply_names, 1396 .num_supplies = ARRAY_SIZE(adv7533_supply_names), 1397 .reg_cec_offset = ADV7533_REG_CEC_OFFSET, 1398 .has_dsi = true, 1399 }; 1400 1401 static const struct adv7511_chip_info adv7535_chip_info = { 1402 .type = ADV7535, 1403 .max_mode_clock_khz = 148500, 1404 .max_lane_freq_khz = 891000, 1405 .supply_names = adv7533_supply_names, 1406 .num_supplies = ARRAY_SIZE(adv7533_supply_names), 1407 .reg_cec_offset = ADV7533_REG_CEC_OFFSET, 1408 .has_dsi = true, 1409 .hpd_override_enable = true, 1410 }; 1411 1412 static const struct i2c_device_id adv7511_i2c_ids[] = { 1413 { "adv7511", (kernel_ulong_t)&adv7511_chip_info }, 1414 { "adv7511w", (kernel_ulong_t)&adv7511_chip_info }, 1415 { "adv7513", (kernel_ulong_t)&adv7511_chip_info }, 1416 { "adv7533", (kernel_ulong_t)&adv7533_chip_info }, 1417 { "adv7535", (kernel_ulong_t)&adv7535_chip_info }, 1418 { } 1419 }; 1420 MODULE_DEVICE_TABLE(i2c, adv7511_i2c_ids); 1421 1422 static const struct of_device_id adv7511_of_ids[] = { 1423 { .compatible = "adi,adv7511", .data = &adv7511_chip_info }, 1424 { .compatible = "adi,adv7511w", .data = &adv7511_chip_info }, 1425 { .compatible = "adi,adv7513", .data = &adv7511_chip_info }, 1426 { .compatible = "adi,adv7533", .data = &adv7533_chip_info }, 1427 { .compatible = "adi,adv7535", .data = &adv7535_chip_info }, 1428 { } 1429 }; 1430 MODULE_DEVICE_TABLE(of, adv7511_of_ids); 1431 1432 static struct mipi_dsi_driver adv7533_dsi_driver = { 1433 .driver.name = "adv7533", 1434 }; 1435 1436 static struct i2c_driver adv7511_driver = { 1437 .driver = { 1438 .name = "adv7511", 1439 .of_match_table = adv7511_of_ids, 1440 }, 1441 .id_table = adv7511_i2c_ids, 1442 .probe = adv7511_probe, 1443 .remove = adv7511_remove, 1444 }; 1445 1446 static int __init adv7511_init(void) 1447 { 1448 int ret; 1449 1450 if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) { 1451 ret = mipi_dsi_driver_register(&adv7533_dsi_driver); 1452 if (ret) 1453 return ret; 1454 } 1455 1456 ret = i2c_add_driver(&adv7511_driver); 1457 if (ret) { 1458 if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) 1459 mipi_dsi_driver_unregister(&adv7533_dsi_driver); 1460 } 1461 1462 return ret; 1463 } 1464 module_init(adv7511_init); 1465 1466 static void __exit adv7511_exit(void) 1467 { 1468 i2c_del_driver(&adv7511_driver); 1469 1470 if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) 1471 mipi_dsi_driver_unregister(&adv7533_dsi_driver); 1472 } 1473 module_exit(adv7511_exit); 1474 1475 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>"); 1476 MODULE_DESCRIPTION("ADV7511 HDMI transmitter driver"); 1477 MODULE_LICENSE("GPL"); 1478