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 struct edid *adv7511_get_edid(struct adv7511 *adv7511, 608 struct drm_connector *connector) 609 { 610 struct edid *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 edid = drm_do_get_edid(connector, adv7511_get_edid_block, adv7511); 625 626 if (!adv7511->powered) 627 __adv7511_power_off(adv7511); 628 629 adv7511_set_config_csc(adv7511, connector, adv7511->rgb, 630 drm_detect_hdmi_monitor(edid)); 631 632 cec_s_phys_addr_from_edid(adv7511->cec_adap, edid); 633 634 return edid; 635 } 636 637 static int adv7511_get_modes(struct adv7511 *adv7511, 638 struct drm_connector *connector) 639 { 640 struct edid *edid; 641 unsigned int count; 642 643 edid = adv7511_get_edid(adv7511, connector); 644 645 drm_connector_update_edid_property(connector, edid); 646 count = drm_add_edid_modes(connector, edid); 647 648 kfree(edid); 649 650 return count; 651 } 652 653 static enum drm_connector_status 654 adv7511_detect(struct adv7511 *adv7511, struct drm_connector *connector) 655 { 656 enum drm_connector_status status; 657 unsigned int val; 658 bool hpd; 659 int ret; 660 661 ret = regmap_read(adv7511->regmap, ADV7511_REG_STATUS, &val); 662 if (ret < 0) 663 return connector_status_disconnected; 664 665 if (val & ADV7511_STATUS_HPD) 666 status = connector_status_connected; 667 else 668 status = connector_status_disconnected; 669 670 hpd = adv7511_hpd(adv7511); 671 672 /* The chip resets itself when the cable is disconnected, so in case 673 * there is a pending HPD interrupt and the cable is connected there was 674 * at least one transition from disconnected to connected and the chip 675 * has to be reinitialized. */ 676 if (status == connector_status_connected && hpd && adv7511->powered) { 677 regcache_mark_dirty(adv7511->regmap); 678 adv7511_power_on(adv7511); 679 if (connector) 680 adv7511_get_modes(adv7511, connector); 681 if (adv7511->status == connector_status_connected) 682 status = connector_status_disconnected; 683 } else { 684 /* Renable HPD sensing */ 685 if (adv7511->info->hpd_override_enable) 686 regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2, 687 ADV7535_REG_POWER2_HPD_OVERRIDE, 688 ADV7535_REG_POWER2_HPD_OVERRIDE); 689 else 690 regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2, 691 ADV7511_REG_POWER2_HPD_SRC_MASK, 692 ADV7511_REG_POWER2_HPD_SRC_BOTH); 693 } 694 695 adv7511->status = status; 696 return status; 697 } 698 699 static enum drm_mode_status adv7511_mode_valid(struct adv7511 *adv7511, 700 const struct drm_display_mode *mode) 701 { 702 if (mode->clock > 165000) 703 return MODE_CLOCK_HIGH; 704 705 return MODE_OK; 706 } 707 708 static void adv7511_mode_set(struct adv7511 *adv7511, 709 const struct drm_display_mode *mode, 710 const struct drm_display_mode *adj_mode) 711 { 712 unsigned int low_refresh_rate; 713 unsigned int hsync_polarity = 0; 714 unsigned int vsync_polarity = 0; 715 716 if (adv7511->embedded_sync) { 717 unsigned int hsync_offset, hsync_len; 718 unsigned int vsync_offset, vsync_len; 719 720 hsync_offset = adj_mode->crtc_hsync_start - 721 adj_mode->crtc_hdisplay; 722 vsync_offset = adj_mode->crtc_vsync_start - 723 adj_mode->crtc_vdisplay; 724 hsync_len = adj_mode->crtc_hsync_end - 725 adj_mode->crtc_hsync_start; 726 vsync_len = adj_mode->crtc_vsync_end - 727 adj_mode->crtc_vsync_start; 728 729 /* The hardware vsync generator has a off-by-one bug */ 730 vsync_offset += 1; 731 732 regmap_write(adv7511->regmap, ADV7511_REG_HSYNC_PLACEMENT_MSB, 733 ((hsync_offset >> 10) & 0x7) << 5); 734 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(0), 735 (hsync_offset >> 2) & 0xff); 736 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(1), 737 ((hsync_offset & 0x3) << 6) | 738 ((hsync_len >> 4) & 0x3f)); 739 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(2), 740 ((hsync_len & 0xf) << 4) | 741 ((vsync_offset >> 6) & 0xf)); 742 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(3), 743 ((vsync_offset & 0x3f) << 2) | 744 ((vsync_len >> 8) & 0x3)); 745 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(4), 746 vsync_len & 0xff); 747 748 hsync_polarity = !(adj_mode->flags & DRM_MODE_FLAG_PHSYNC); 749 vsync_polarity = !(adj_mode->flags & DRM_MODE_FLAG_PVSYNC); 750 } else { 751 enum adv7511_sync_polarity mode_hsync_polarity; 752 enum adv7511_sync_polarity mode_vsync_polarity; 753 754 /** 755 * If the input signal is always low or always high we want to 756 * invert or let it passthrough depending on the polarity of the 757 * current mode. 758 **/ 759 if (adj_mode->flags & DRM_MODE_FLAG_NHSYNC) 760 mode_hsync_polarity = ADV7511_SYNC_POLARITY_LOW; 761 else 762 mode_hsync_polarity = ADV7511_SYNC_POLARITY_HIGH; 763 764 if (adj_mode->flags & DRM_MODE_FLAG_NVSYNC) 765 mode_vsync_polarity = ADV7511_SYNC_POLARITY_LOW; 766 else 767 mode_vsync_polarity = ADV7511_SYNC_POLARITY_HIGH; 768 769 if (adv7511->hsync_polarity != mode_hsync_polarity && 770 adv7511->hsync_polarity != 771 ADV7511_SYNC_POLARITY_PASSTHROUGH) 772 hsync_polarity = 1; 773 774 if (adv7511->vsync_polarity != mode_vsync_polarity && 775 adv7511->vsync_polarity != 776 ADV7511_SYNC_POLARITY_PASSTHROUGH) 777 vsync_polarity = 1; 778 } 779 780 if (drm_mode_vrefresh(mode) <= 24) 781 low_refresh_rate = ADV7511_LOW_REFRESH_RATE_24HZ; 782 else if (drm_mode_vrefresh(mode) <= 25) 783 low_refresh_rate = ADV7511_LOW_REFRESH_RATE_25HZ; 784 else if (drm_mode_vrefresh(mode) <= 30) 785 low_refresh_rate = ADV7511_LOW_REFRESH_RATE_30HZ; 786 else 787 low_refresh_rate = ADV7511_LOW_REFRESH_RATE_NONE; 788 789 if (adv7511->info->type == ADV7511) 790 regmap_update_bits(adv7511->regmap, 0xfb, 791 0x6, low_refresh_rate << 1); 792 else 793 regmap_update_bits(adv7511->regmap, 0x4a, 794 0xc, low_refresh_rate << 2); 795 796 regmap_update_bits(adv7511->regmap, 0x17, 797 0x60, (vsync_polarity << 6) | (hsync_polarity << 5)); 798 799 drm_mode_copy(&adv7511->curr_mode, adj_mode); 800 801 /* 802 * TODO Test first order 4:2:2 to 4:4:4 up conversion method, which is 803 * supposed to give better results. 804 */ 805 806 adv7511->f_tmds = mode->clock; 807 } 808 809 /* ----------------------------------------------------------------------------- 810 * DRM Connector Operations 811 */ 812 813 static struct adv7511 *connector_to_adv7511(struct drm_connector *connector) 814 { 815 return container_of(connector, struct adv7511, connector); 816 } 817 818 static int adv7511_connector_get_modes(struct drm_connector *connector) 819 { 820 struct adv7511 *adv = connector_to_adv7511(connector); 821 822 return adv7511_get_modes(adv, connector); 823 } 824 825 static enum drm_mode_status 826 adv7511_connector_mode_valid(struct drm_connector *connector, 827 struct drm_display_mode *mode) 828 { 829 struct adv7511 *adv = connector_to_adv7511(connector); 830 831 return adv7511_mode_valid(adv, mode); 832 } 833 834 static struct drm_connector_helper_funcs adv7511_connector_helper_funcs = { 835 .get_modes = adv7511_connector_get_modes, 836 .mode_valid = adv7511_connector_mode_valid, 837 }; 838 839 static enum drm_connector_status 840 adv7511_connector_detect(struct drm_connector *connector, bool force) 841 { 842 struct adv7511 *adv = connector_to_adv7511(connector); 843 844 return adv7511_detect(adv, connector); 845 } 846 847 static const struct drm_connector_funcs adv7511_connector_funcs = { 848 .fill_modes = drm_helper_probe_single_connector_modes, 849 .detect = adv7511_connector_detect, 850 .destroy = drm_connector_cleanup, 851 .reset = drm_atomic_helper_connector_reset, 852 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, 853 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, 854 }; 855 856 static int adv7511_connector_init(struct adv7511 *adv) 857 { 858 struct drm_bridge *bridge = &adv->bridge; 859 int ret; 860 861 if (!bridge->encoder) { 862 DRM_ERROR("Parent encoder object not found"); 863 return -ENODEV; 864 } 865 866 if (adv->i2c_main->irq) 867 adv->connector.polled = DRM_CONNECTOR_POLL_HPD; 868 else 869 adv->connector.polled = DRM_CONNECTOR_POLL_CONNECT | 870 DRM_CONNECTOR_POLL_DISCONNECT; 871 872 ret = drm_connector_init(bridge->dev, &adv->connector, 873 &adv7511_connector_funcs, 874 DRM_MODE_CONNECTOR_HDMIA); 875 if (ret < 0) { 876 DRM_ERROR("Failed to initialize connector with drm\n"); 877 return ret; 878 } 879 drm_connector_helper_add(&adv->connector, 880 &adv7511_connector_helper_funcs); 881 drm_connector_attach_encoder(&adv->connector, bridge->encoder); 882 883 return 0; 884 } 885 886 /* ----------------------------------------------------------------------------- 887 * DRM Bridge Operations 888 */ 889 890 static struct adv7511 *bridge_to_adv7511(struct drm_bridge *bridge) 891 { 892 return container_of(bridge, struct adv7511, bridge); 893 } 894 895 static void adv7511_bridge_enable(struct drm_bridge *bridge) 896 { 897 struct adv7511 *adv = bridge_to_adv7511(bridge); 898 899 adv7511_power_on(adv); 900 } 901 902 static void adv7511_bridge_disable(struct drm_bridge *bridge) 903 { 904 struct adv7511 *adv = bridge_to_adv7511(bridge); 905 906 adv7511_power_off(adv); 907 } 908 909 static void adv7511_bridge_mode_set(struct drm_bridge *bridge, 910 const struct drm_display_mode *mode, 911 const struct drm_display_mode *adj_mode) 912 { 913 struct adv7511 *adv = bridge_to_adv7511(bridge); 914 915 adv7511_mode_set(adv, mode, adj_mode); 916 } 917 918 static enum drm_mode_status adv7511_bridge_mode_valid(struct drm_bridge *bridge, 919 const struct drm_display_info *info, 920 const struct drm_display_mode *mode) 921 { 922 struct adv7511 *adv = bridge_to_adv7511(bridge); 923 924 if (adv->info->has_dsi) 925 return adv7533_mode_valid(adv, mode); 926 else 927 return adv7511_mode_valid(adv, mode); 928 } 929 930 static int adv7511_bridge_attach(struct drm_bridge *bridge, 931 enum drm_bridge_attach_flags flags) 932 { 933 struct adv7511 *adv = bridge_to_adv7511(bridge); 934 int ret = 0; 935 936 if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) { 937 ret = adv7511_connector_init(adv); 938 if (ret < 0) 939 return ret; 940 } 941 942 if (adv->i2c_main->irq) 943 regmap_write(adv->regmap, ADV7511_REG_INT_ENABLE(0), 944 ADV7511_INT0_HPD); 945 946 return ret; 947 } 948 949 static enum drm_connector_status adv7511_bridge_detect(struct drm_bridge *bridge) 950 { 951 struct adv7511 *adv = bridge_to_adv7511(bridge); 952 953 return adv7511_detect(adv, NULL); 954 } 955 956 static struct edid *adv7511_bridge_get_edid(struct drm_bridge *bridge, 957 struct drm_connector *connector) 958 { 959 struct adv7511 *adv = bridge_to_adv7511(bridge); 960 961 return adv7511_get_edid(adv, connector); 962 } 963 964 static void adv7511_bridge_hpd_notify(struct drm_bridge *bridge, 965 enum drm_connector_status status) 966 { 967 struct adv7511 *adv = bridge_to_adv7511(bridge); 968 969 if (status == connector_status_disconnected) 970 cec_phys_addr_invalidate(adv->cec_adap); 971 } 972 973 static const struct drm_bridge_funcs adv7511_bridge_funcs = { 974 .enable = adv7511_bridge_enable, 975 .disable = adv7511_bridge_disable, 976 .mode_set = adv7511_bridge_mode_set, 977 .mode_valid = adv7511_bridge_mode_valid, 978 .attach = adv7511_bridge_attach, 979 .detect = adv7511_bridge_detect, 980 .get_edid = adv7511_bridge_get_edid, 981 .hpd_notify = adv7511_bridge_hpd_notify, 982 }; 983 984 /* ----------------------------------------------------------------------------- 985 * Probe & remove 986 */ 987 988 static const char * const adv7511_supply_names[] = { 989 "avdd", 990 "dvdd", 991 "pvdd", 992 "bgvdd", 993 "dvdd-3v", 994 }; 995 996 static const char * const adv7533_supply_names[] = { 997 "avdd", 998 "dvdd", 999 "pvdd", 1000 "a2vdd", 1001 "v3p3", 1002 "v1p2", 1003 }; 1004 1005 static int adv7511_init_regulators(struct adv7511 *adv) 1006 { 1007 const char * const *supply_names = adv->info->supply_names; 1008 unsigned int num_supplies = adv->info->num_supplies; 1009 struct device *dev = &adv->i2c_main->dev; 1010 unsigned int i; 1011 int ret; 1012 1013 adv->supplies = devm_kcalloc(dev, num_supplies, 1014 sizeof(*adv->supplies), GFP_KERNEL); 1015 if (!adv->supplies) 1016 return -ENOMEM; 1017 1018 for (i = 0; i < num_supplies; i++) 1019 adv->supplies[i].supply = supply_names[i]; 1020 1021 ret = devm_regulator_bulk_get(dev, num_supplies, adv->supplies); 1022 if (ret) 1023 return ret; 1024 1025 return regulator_bulk_enable(num_supplies, adv->supplies); 1026 } 1027 1028 static void adv7511_uninit_regulators(struct adv7511 *adv) 1029 { 1030 regulator_bulk_disable(adv->info->num_supplies, adv->supplies); 1031 } 1032 1033 static bool adv7511_cec_register_volatile(struct device *dev, unsigned int reg) 1034 { 1035 struct i2c_client *i2c = to_i2c_client(dev); 1036 struct adv7511 *adv7511 = i2c_get_clientdata(i2c); 1037 1038 reg -= adv7511->info->reg_cec_offset; 1039 1040 switch (reg) { 1041 case ADV7511_REG_CEC_RX1_FRAME_HDR: 1042 case ADV7511_REG_CEC_RX1_FRAME_DATA0 ... ADV7511_REG_CEC_RX1_FRAME_DATA0 + 14: 1043 case ADV7511_REG_CEC_RX1_FRAME_LEN: 1044 case ADV7511_REG_CEC_RX2_FRAME_HDR: 1045 case ADV7511_REG_CEC_RX2_FRAME_DATA0 ... ADV7511_REG_CEC_RX2_FRAME_DATA0 + 14: 1046 case ADV7511_REG_CEC_RX2_FRAME_LEN: 1047 case ADV7511_REG_CEC_RX3_FRAME_HDR: 1048 case ADV7511_REG_CEC_RX3_FRAME_DATA0 ... ADV7511_REG_CEC_RX3_FRAME_DATA0 + 14: 1049 case ADV7511_REG_CEC_RX3_FRAME_LEN: 1050 case ADV7511_REG_CEC_RX_STATUS: 1051 case ADV7511_REG_CEC_RX_BUFFERS: 1052 case ADV7511_REG_CEC_TX_LOW_DRV_CNT: 1053 return true; 1054 } 1055 1056 return false; 1057 } 1058 1059 static const struct regmap_config adv7511_cec_regmap_config = { 1060 .reg_bits = 8, 1061 .val_bits = 8, 1062 1063 .max_register = 0xff, 1064 .cache_type = REGCACHE_MAPLE, 1065 .volatile_reg = adv7511_cec_register_volatile, 1066 }; 1067 1068 static int adv7511_init_cec_regmap(struct adv7511 *adv) 1069 { 1070 int ret; 1071 1072 adv->i2c_cec = i2c_new_ancillary_device(adv->i2c_main, "cec", 1073 ADV7511_CEC_I2C_ADDR_DEFAULT); 1074 if (IS_ERR(adv->i2c_cec)) 1075 return PTR_ERR(adv->i2c_cec); 1076 1077 regmap_write(adv->regmap, ADV7511_REG_CEC_I2C_ADDR, 1078 adv->i2c_cec->addr << 1); 1079 1080 i2c_set_clientdata(adv->i2c_cec, adv); 1081 1082 adv->regmap_cec = devm_regmap_init_i2c(adv->i2c_cec, 1083 &adv7511_cec_regmap_config); 1084 if (IS_ERR(adv->regmap_cec)) { 1085 ret = PTR_ERR(adv->regmap_cec); 1086 goto err; 1087 } 1088 1089 if (adv->info->reg_cec_offset == ADV7533_REG_CEC_OFFSET) { 1090 ret = adv7533_patch_cec_registers(adv); 1091 if (ret) 1092 goto err; 1093 } 1094 1095 return 0; 1096 err: 1097 i2c_unregister_device(adv->i2c_cec); 1098 return ret; 1099 } 1100 1101 static int adv7511_parse_dt(struct device_node *np, 1102 struct adv7511_link_config *config) 1103 { 1104 const char *str; 1105 int ret; 1106 1107 of_property_read_u32(np, "adi,input-depth", &config->input_color_depth); 1108 if (config->input_color_depth != 8 && config->input_color_depth != 10 && 1109 config->input_color_depth != 12) 1110 return -EINVAL; 1111 1112 ret = of_property_read_string(np, "adi,input-colorspace", &str); 1113 if (ret < 0) 1114 return ret; 1115 1116 if (!strcmp(str, "rgb")) 1117 config->input_colorspace = HDMI_COLORSPACE_RGB; 1118 else if (!strcmp(str, "yuv422")) 1119 config->input_colorspace = HDMI_COLORSPACE_YUV422; 1120 else if (!strcmp(str, "yuv444")) 1121 config->input_colorspace = HDMI_COLORSPACE_YUV444; 1122 else 1123 return -EINVAL; 1124 1125 ret = of_property_read_string(np, "adi,input-clock", &str); 1126 if (ret < 0) 1127 return ret; 1128 1129 if (!strcmp(str, "1x")) 1130 config->input_clock = ADV7511_INPUT_CLOCK_1X; 1131 else if (!strcmp(str, "2x")) 1132 config->input_clock = ADV7511_INPUT_CLOCK_2X; 1133 else if (!strcmp(str, "ddr")) 1134 config->input_clock = ADV7511_INPUT_CLOCK_DDR; 1135 else 1136 return -EINVAL; 1137 1138 if (config->input_colorspace == HDMI_COLORSPACE_YUV422 || 1139 config->input_clock != ADV7511_INPUT_CLOCK_1X) { 1140 ret = of_property_read_u32(np, "adi,input-style", 1141 &config->input_style); 1142 if (ret) 1143 return ret; 1144 1145 if (config->input_style < 1 || config->input_style > 3) 1146 return -EINVAL; 1147 1148 ret = of_property_read_string(np, "adi,input-justification", 1149 &str); 1150 if (ret < 0) 1151 return ret; 1152 1153 if (!strcmp(str, "left")) 1154 config->input_justification = 1155 ADV7511_INPUT_JUSTIFICATION_LEFT; 1156 else if (!strcmp(str, "evenly")) 1157 config->input_justification = 1158 ADV7511_INPUT_JUSTIFICATION_EVENLY; 1159 else if (!strcmp(str, "right")) 1160 config->input_justification = 1161 ADV7511_INPUT_JUSTIFICATION_RIGHT; 1162 else 1163 return -EINVAL; 1164 1165 } else { 1166 config->input_style = 1; 1167 config->input_justification = ADV7511_INPUT_JUSTIFICATION_LEFT; 1168 } 1169 1170 of_property_read_u32(np, "adi,clock-delay", &config->clock_delay); 1171 if (config->clock_delay < -1200 || config->clock_delay > 1600) 1172 return -EINVAL; 1173 1174 config->embedded_sync = of_property_read_bool(np, "adi,embedded-sync"); 1175 1176 /* Hardcode the sync pulse configurations for now. */ 1177 config->sync_pulse = ADV7511_INPUT_SYNC_PULSE_NONE; 1178 config->vsync_polarity = ADV7511_SYNC_POLARITY_PASSTHROUGH; 1179 config->hsync_polarity = ADV7511_SYNC_POLARITY_PASSTHROUGH; 1180 1181 return 0; 1182 } 1183 1184 static int adv7511_probe(struct i2c_client *i2c) 1185 { 1186 struct adv7511_link_config link_config; 1187 struct adv7511 *adv7511; 1188 struct device *dev = &i2c->dev; 1189 unsigned int val; 1190 int ret; 1191 1192 if (!dev->of_node) 1193 return -EINVAL; 1194 1195 adv7511 = devm_kzalloc(dev, sizeof(*adv7511), GFP_KERNEL); 1196 if (!adv7511) 1197 return -ENOMEM; 1198 1199 adv7511->i2c_main = i2c; 1200 adv7511->powered = false; 1201 adv7511->status = connector_status_disconnected; 1202 adv7511->info = i2c_get_match_data(i2c); 1203 1204 memset(&link_config, 0, sizeof(link_config)); 1205 1206 if (adv7511->info->link_config) 1207 ret = adv7511_parse_dt(dev->of_node, &link_config); 1208 else 1209 ret = adv7533_parse_dt(dev->of_node, adv7511); 1210 if (ret) 1211 return ret; 1212 1213 ret = adv7511_init_regulators(adv7511); 1214 if (ret) 1215 return dev_err_probe(dev, ret, "failed to init regulators\n"); 1216 1217 /* 1218 * The power down GPIO is optional. If present, toggle it from active to 1219 * inactive to wake up the encoder. 1220 */ 1221 adv7511->gpio_pd = devm_gpiod_get_optional(dev, "pd", GPIOD_OUT_HIGH); 1222 if (IS_ERR(adv7511->gpio_pd)) { 1223 ret = PTR_ERR(adv7511->gpio_pd); 1224 goto uninit_regulators; 1225 } 1226 1227 if (adv7511->gpio_pd) { 1228 usleep_range(5000, 6000); 1229 gpiod_set_value_cansleep(adv7511->gpio_pd, 0); 1230 } 1231 1232 adv7511->regmap = devm_regmap_init_i2c(i2c, &adv7511_regmap_config); 1233 if (IS_ERR(adv7511->regmap)) { 1234 ret = PTR_ERR(adv7511->regmap); 1235 goto uninit_regulators; 1236 } 1237 1238 ret = regmap_read(adv7511->regmap, ADV7511_REG_CHIP_REVISION, &val); 1239 if (ret) 1240 goto uninit_regulators; 1241 dev_dbg(dev, "Rev. %d\n", val); 1242 1243 if (adv7511->info->type == ADV7511) 1244 ret = regmap_register_patch(adv7511->regmap, 1245 adv7511_fixed_registers, 1246 ARRAY_SIZE(adv7511_fixed_registers)); 1247 else 1248 ret = adv7533_patch_registers(adv7511); 1249 if (ret) 1250 goto uninit_regulators; 1251 1252 adv7511_packet_disable(adv7511, 0xffff); 1253 1254 adv7511->i2c_edid = i2c_new_ancillary_device(i2c, "edid", 1255 ADV7511_EDID_I2C_ADDR_DEFAULT); 1256 if (IS_ERR(adv7511->i2c_edid)) { 1257 ret = PTR_ERR(adv7511->i2c_edid); 1258 goto uninit_regulators; 1259 } 1260 1261 regmap_write(adv7511->regmap, ADV7511_REG_EDID_I2C_ADDR, 1262 adv7511->i2c_edid->addr << 1); 1263 1264 adv7511->i2c_packet = i2c_new_ancillary_device(i2c, "packet", 1265 ADV7511_PACKET_I2C_ADDR_DEFAULT); 1266 if (IS_ERR(adv7511->i2c_packet)) { 1267 ret = PTR_ERR(adv7511->i2c_packet); 1268 goto err_i2c_unregister_edid; 1269 } 1270 1271 regmap_write(adv7511->regmap, ADV7511_REG_PACKET_I2C_ADDR, 1272 adv7511->i2c_packet->addr << 1); 1273 1274 ret = adv7511_init_cec_regmap(adv7511); 1275 if (ret) 1276 goto err_i2c_unregister_packet; 1277 1278 INIT_WORK(&adv7511->hpd_work, adv7511_hpd_work); 1279 1280 if (i2c->irq) { 1281 init_waitqueue_head(&adv7511->wq); 1282 1283 ret = devm_request_threaded_irq(dev, i2c->irq, NULL, 1284 adv7511_irq_handler, 1285 IRQF_ONESHOT, dev_name(dev), 1286 adv7511); 1287 if (ret) 1288 goto err_unregister_cec; 1289 } 1290 1291 adv7511_power_off(adv7511); 1292 1293 i2c_set_clientdata(i2c, adv7511); 1294 1295 if (adv7511->info->link_config) 1296 adv7511_set_link_config(adv7511, &link_config); 1297 1298 ret = adv7511_cec_init(dev, adv7511); 1299 if (ret) 1300 goto err_unregister_cec; 1301 1302 adv7511->bridge.funcs = &adv7511_bridge_funcs; 1303 adv7511->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID; 1304 if (adv7511->i2c_main->irq) 1305 adv7511->bridge.ops |= DRM_BRIDGE_OP_HPD; 1306 1307 adv7511->bridge.of_node = dev->of_node; 1308 adv7511->bridge.type = DRM_MODE_CONNECTOR_HDMIA; 1309 1310 drm_bridge_add(&adv7511->bridge); 1311 1312 adv7511_audio_init(dev, adv7511); 1313 1314 if (adv7511->info->has_dsi) { 1315 ret = adv7533_attach_dsi(adv7511); 1316 if (ret) 1317 goto err_unregister_audio; 1318 } 1319 1320 return 0; 1321 1322 err_unregister_audio: 1323 adv7511_audio_exit(adv7511); 1324 drm_bridge_remove(&adv7511->bridge); 1325 err_unregister_cec: 1326 cec_unregister_adapter(adv7511->cec_adap); 1327 i2c_unregister_device(adv7511->i2c_cec); 1328 clk_disable_unprepare(adv7511->cec_clk); 1329 err_i2c_unregister_packet: 1330 i2c_unregister_device(adv7511->i2c_packet); 1331 err_i2c_unregister_edid: 1332 i2c_unregister_device(adv7511->i2c_edid); 1333 uninit_regulators: 1334 adv7511_uninit_regulators(adv7511); 1335 1336 return ret; 1337 } 1338 1339 static void adv7511_remove(struct i2c_client *i2c) 1340 { 1341 struct adv7511 *adv7511 = i2c_get_clientdata(i2c); 1342 1343 adv7511_uninit_regulators(adv7511); 1344 1345 drm_bridge_remove(&adv7511->bridge); 1346 1347 adv7511_audio_exit(adv7511); 1348 1349 cec_unregister_adapter(adv7511->cec_adap); 1350 i2c_unregister_device(adv7511->i2c_cec); 1351 clk_disable_unprepare(adv7511->cec_clk); 1352 1353 i2c_unregister_device(adv7511->i2c_packet); 1354 i2c_unregister_device(adv7511->i2c_edid); 1355 } 1356 1357 static const struct adv7511_chip_info adv7511_chip_info = { 1358 .type = ADV7511, 1359 .supply_names = adv7511_supply_names, 1360 .num_supplies = ARRAY_SIZE(adv7511_supply_names), 1361 .link_config = true, 1362 }; 1363 1364 static const struct adv7511_chip_info adv7533_chip_info = { 1365 .type = ADV7533, 1366 .max_mode_clock_khz = 80000, 1367 .max_lane_freq_khz = 800000, 1368 .supply_names = adv7533_supply_names, 1369 .num_supplies = ARRAY_SIZE(adv7533_supply_names), 1370 .reg_cec_offset = ADV7533_REG_CEC_OFFSET, 1371 .has_dsi = true, 1372 }; 1373 1374 static const struct adv7511_chip_info adv7535_chip_info = { 1375 .type = ADV7535, 1376 .max_mode_clock_khz = 148500, 1377 .max_lane_freq_khz = 891000, 1378 .supply_names = adv7533_supply_names, 1379 .num_supplies = ARRAY_SIZE(adv7533_supply_names), 1380 .reg_cec_offset = ADV7533_REG_CEC_OFFSET, 1381 .has_dsi = true, 1382 .hpd_override_enable = true, 1383 }; 1384 1385 static const struct i2c_device_id adv7511_i2c_ids[] = { 1386 { "adv7511", (kernel_ulong_t)&adv7511_chip_info }, 1387 { "adv7511w", (kernel_ulong_t)&adv7511_chip_info }, 1388 { "adv7513", (kernel_ulong_t)&adv7511_chip_info }, 1389 { "adv7533", (kernel_ulong_t)&adv7533_chip_info }, 1390 { "adv7535", (kernel_ulong_t)&adv7535_chip_info }, 1391 { } 1392 }; 1393 MODULE_DEVICE_TABLE(i2c, adv7511_i2c_ids); 1394 1395 static const struct of_device_id adv7511_of_ids[] = { 1396 { .compatible = "adi,adv7511", .data = &adv7511_chip_info }, 1397 { .compatible = "adi,adv7511w", .data = &adv7511_chip_info }, 1398 { .compatible = "adi,adv7513", .data = &adv7511_chip_info }, 1399 { .compatible = "adi,adv7533", .data = &adv7533_chip_info }, 1400 { .compatible = "adi,adv7535", .data = &adv7535_chip_info }, 1401 { } 1402 }; 1403 MODULE_DEVICE_TABLE(of, adv7511_of_ids); 1404 1405 static struct mipi_dsi_driver adv7533_dsi_driver = { 1406 .driver.name = "adv7533", 1407 }; 1408 1409 static struct i2c_driver adv7511_driver = { 1410 .driver = { 1411 .name = "adv7511", 1412 .of_match_table = adv7511_of_ids, 1413 }, 1414 .id_table = adv7511_i2c_ids, 1415 .probe = adv7511_probe, 1416 .remove = adv7511_remove, 1417 }; 1418 1419 static int __init adv7511_init(void) 1420 { 1421 int ret; 1422 1423 if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) { 1424 ret = mipi_dsi_driver_register(&adv7533_dsi_driver); 1425 if (ret) 1426 return ret; 1427 } 1428 1429 ret = i2c_add_driver(&adv7511_driver); 1430 if (ret) { 1431 if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) 1432 mipi_dsi_driver_unregister(&adv7533_dsi_driver); 1433 } 1434 1435 return ret; 1436 } 1437 module_init(adv7511_init); 1438 1439 static void __exit adv7511_exit(void) 1440 { 1441 i2c_del_driver(&adv7511_driver); 1442 1443 if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) 1444 mipi_dsi_driver_unregister(&adv7533_dsi_driver); 1445 } 1446 module_exit(adv7511_exit); 1447 1448 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>"); 1449 MODULE_DESCRIPTION("ADV7511 HDMI transmitter driver"); 1450 MODULE_LICENSE("GPL"); 1451