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