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 int cec_status = IRQ_NONE; 473 int irq_status = IRQ_NONE; 474 475 ret = regmap_read(adv7511->regmap, ADV7511_REG_INT(0), &irq0); 476 if (ret < 0) 477 return ret; 478 479 ret = regmap_read(adv7511->regmap, ADV7511_REG_INT(1), &irq1); 480 if (ret < 0) 481 return ret; 482 483 regmap_write(adv7511->regmap, ADV7511_REG_INT(0), irq0); 484 regmap_write(adv7511->regmap, ADV7511_REG_INT(1), irq1); 485 486 if (process_hpd && irq0 & ADV7511_INT0_HPD && adv7511->bridge.encoder) { 487 schedule_work(&adv7511->hpd_work); 488 irq_status = IRQ_HANDLED; 489 } 490 491 if (irq0 & ADV7511_INT0_EDID_READY || irq1 & ADV7511_INT1_DDC_ERROR) { 492 adv7511->edid_read = true; 493 494 if (adv7511->i2c_main->irq) 495 wake_up_all(&adv7511->wq); 496 irq_status = IRQ_HANDLED; 497 } 498 499 #ifdef CONFIG_DRM_I2C_ADV7511_CEC 500 cec_status = adv7511_cec_irq_process(adv7511, irq1); 501 #endif 502 503 /* If there is no IRQ to handle, exit indicating no IRQ data */ 504 if (irq_status == IRQ_HANDLED || cec_status == IRQ_HANDLED) 505 return IRQ_HANDLED; 506 507 return IRQ_NONE; 508 } 509 510 static irqreturn_t adv7511_irq_handler(int irq, void *devid) 511 { 512 struct adv7511 *adv7511 = devid; 513 int ret; 514 515 ret = adv7511_irq_process(adv7511, true); 516 return ret < 0 ? IRQ_NONE : ret; 517 } 518 519 /* ----------------------------------------------------------------------------- 520 * EDID retrieval 521 */ 522 523 static int adv7511_wait_for_edid(struct adv7511 *adv7511, int timeout) 524 { 525 int ret; 526 527 if (adv7511->i2c_main->irq) { 528 ret = wait_event_interruptible_timeout(adv7511->wq, 529 adv7511->edid_read, msecs_to_jiffies(timeout)); 530 } else { 531 for (; timeout > 0; timeout -= 25) { 532 ret = adv7511_irq_process(adv7511, false); 533 if (ret < 0) 534 break; 535 536 if (adv7511->edid_read) 537 break; 538 539 msleep(25); 540 } 541 } 542 543 return adv7511->edid_read ? 0 : -EIO; 544 } 545 546 static int adv7511_get_edid_block(void *data, u8 *buf, unsigned int block, 547 size_t len) 548 { 549 struct adv7511 *adv7511 = data; 550 struct i2c_msg xfer[2]; 551 uint8_t offset; 552 unsigned int i; 553 int ret; 554 555 if (len > 128) 556 return -EINVAL; 557 558 if (adv7511->current_edid_segment != block / 2) { 559 unsigned int status; 560 561 ret = regmap_read(adv7511->regmap, ADV7511_REG_DDC_STATUS, 562 &status); 563 if (ret < 0) 564 return ret; 565 566 if (status != 2) { 567 adv7511->edid_read = false; 568 regmap_write(adv7511->regmap, ADV7511_REG_EDID_SEGMENT, 569 block); 570 ret = adv7511_wait_for_edid(adv7511, 200); 571 if (ret < 0) 572 return ret; 573 } 574 575 /* Break this apart, hopefully more I2C controllers will 576 * support 64 byte transfers than 256 byte transfers 577 */ 578 579 xfer[0].addr = adv7511->i2c_edid->addr; 580 xfer[0].flags = 0; 581 xfer[0].len = 1; 582 xfer[0].buf = &offset; 583 xfer[1].addr = adv7511->i2c_edid->addr; 584 xfer[1].flags = I2C_M_RD; 585 xfer[1].len = 64; 586 xfer[1].buf = adv7511->edid_buf; 587 588 offset = 0; 589 590 for (i = 0; i < 4; ++i) { 591 ret = i2c_transfer(adv7511->i2c_edid->adapter, xfer, 592 ARRAY_SIZE(xfer)); 593 if (ret < 0) 594 return ret; 595 else if (ret != 2) 596 return -EIO; 597 598 xfer[1].buf += 64; 599 offset += 64; 600 } 601 602 adv7511->current_edid_segment = block / 2; 603 } 604 605 if (block % 2 == 0) 606 memcpy(buf, adv7511->edid_buf, len); 607 else 608 memcpy(buf, adv7511->edid_buf + 128, len); 609 610 return 0; 611 } 612 613 /* ----------------------------------------------------------------------------- 614 * ADV75xx helpers 615 */ 616 617 static const struct drm_edid *adv7511_edid_read(struct adv7511 *adv7511, 618 struct drm_connector *connector) 619 { 620 const struct drm_edid *drm_edid; 621 622 /* Reading the EDID only works if the device is powered */ 623 if (!adv7511->powered) { 624 unsigned int edid_i2c_addr = 625 (adv7511->i2c_edid->addr << 1); 626 627 __adv7511_power_on(adv7511); 628 629 /* Reset the EDID_I2C_ADDR register as it might be cleared */ 630 regmap_write(adv7511->regmap, ADV7511_REG_EDID_I2C_ADDR, 631 edid_i2c_addr); 632 } 633 634 drm_edid = drm_edid_read_custom(connector, adv7511_get_edid_block, adv7511); 635 636 if (!adv7511->powered) 637 __adv7511_power_off(adv7511); 638 639 if (drm_edid) { 640 /* 641 * FIXME: The CEC physical address should be set using 642 * cec_s_phys_addr(adap, 643 * connector->display_info.source_physical_address, false) from 644 * a path that has read the EDID and called 645 * drm_edid_connector_update(). 646 */ 647 const struct edid *edid = drm_edid_raw(drm_edid); 648 649 adv7511_set_config_csc(adv7511, connector, adv7511->rgb, 650 drm_detect_hdmi_monitor(edid)); 651 652 cec_s_phys_addr_from_edid(adv7511->cec_adap, edid); 653 } else { 654 cec_s_phys_addr_from_edid(adv7511->cec_adap, NULL); 655 } 656 657 return drm_edid; 658 } 659 660 static int adv7511_get_modes(struct adv7511 *adv7511, 661 struct drm_connector *connector) 662 { 663 const struct drm_edid *drm_edid; 664 unsigned int count; 665 666 drm_edid = adv7511_edid_read(adv7511, connector); 667 668 drm_edid_connector_update(connector, drm_edid); 669 count = drm_edid_connector_add_modes(connector); 670 671 drm_edid_free(drm_edid); 672 673 return count; 674 } 675 676 static enum drm_connector_status 677 adv7511_detect(struct adv7511 *adv7511, struct drm_connector *connector) 678 { 679 enum drm_connector_status status; 680 unsigned int val; 681 bool hpd; 682 int ret; 683 684 ret = regmap_read(adv7511->regmap, ADV7511_REG_STATUS, &val); 685 if (ret < 0) 686 return connector_status_disconnected; 687 688 if (val & ADV7511_STATUS_HPD) 689 status = connector_status_connected; 690 else 691 status = connector_status_disconnected; 692 693 hpd = adv7511_hpd(adv7511); 694 695 /* The chip resets itself when the cable is disconnected, so in case 696 * there is a pending HPD interrupt and the cable is connected there was 697 * at least one transition from disconnected to connected and the chip 698 * has to be reinitialized. */ 699 if (status == connector_status_connected && hpd && adv7511->powered) { 700 regcache_mark_dirty(adv7511->regmap); 701 adv7511_power_on(adv7511); 702 if (connector) 703 adv7511_get_modes(adv7511, connector); 704 if (adv7511->status == connector_status_connected) 705 status = connector_status_disconnected; 706 } else { 707 /* Renable HPD sensing */ 708 if (adv7511->info->hpd_override_enable) 709 regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2, 710 ADV7535_REG_POWER2_HPD_OVERRIDE, 711 ADV7535_REG_POWER2_HPD_OVERRIDE); 712 else 713 regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2, 714 ADV7511_REG_POWER2_HPD_SRC_MASK, 715 ADV7511_REG_POWER2_HPD_SRC_BOTH); 716 } 717 718 adv7511->status = status; 719 return status; 720 } 721 722 static enum drm_mode_status adv7511_mode_valid(struct adv7511 *adv7511, 723 const struct drm_display_mode *mode) 724 { 725 if (mode->clock > 165000) 726 return MODE_CLOCK_HIGH; 727 728 return MODE_OK; 729 } 730 731 static void adv7511_mode_set(struct adv7511 *adv7511, 732 const struct drm_display_mode *mode, 733 const struct drm_display_mode *adj_mode) 734 { 735 unsigned int low_refresh_rate; 736 unsigned int hsync_polarity = 0; 737 unsigned int vsync_polarity = 0; 738 739 if (adv7511->embedded_sync) { 740 unsigned int hsync_offset, hsync_len; 741 unsigned int vsync_offset, vsync_len; 742 743 hsync_offset = adj_mode->crtc_hsync_start - 744 adj_mode->crtc_hdisplay; 745 vsync_offset = adj_mode->crtc_vsync_start - 746 adj_mode->crtc_vdisplay; 747 hsync_len = adj_mode->crtc_hsync_end - 748 adj_mode->crtc_hsync_start; 749 vsync_len = adj_mode->crtc_vsync_end - 750 adj_mode->crtc_vsync_start; 751 752 /* The hardware vsync generator has a off-by-one bug */ 753 vsync_offset += 1; 754 755 regmap_write(adv7511->regmap, ADV7511_REG_HSYNC_PLACEMENT_MSB, 756 ((hsync_offset >> 10) & 0x7) << 5); 757 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(0), 758 (hsync_offset >> 2) & 0xff); 759 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(1), 760 ((hsync_offset & 0x3) << 6) | 761 ((hsync_len >> 4) & 0x3f)); 762 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(2), 763 ((hsync_len & 0xf) << 4) | 764 ((vsync_offset >> 6) & 0xf)); 765 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(3), 766 ((vsync_offset & 0x3f) << 2) | 767 ((vsync_len >> 8) & 0x3)); 768 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(4), 769 vsync_len & 0xff); 770 771 hsync_polarity = !(adj_mode->flags & DRM_MODE_FLAG_PHSYNC); 772 vsync_polarity = !(adj_mode->flags & DRM_MODE_FLAG_PVSYNC); 773 } else { 774 enum adv7511_sync_polarity mode_hsync_polarity; 775 enum adv7511_sync_polarity mode_vsync_polarity; 776 777 /** 778 * If the input signal is always low or always high we want to 779 * invert or let it passthrough depending on the polarity of the 780 * current mode. 781 **/ 782 if (adj_mode->flags & DRM_MODE_FLAG_NHSYNC) 783 mode_hsync_polarity = ADV7511_SYNC_POLARITY_LOW; 784 else 785 mode_hsync_polarity = ADV7511_SYNC_POLARITY_HIGH; 786 787 if (adj_mode->flags & DRM_MODE_FLAG_NVSYNC) 788 mode_vsync_polarity = ADV7511_SYNC_POLARITY_LOW; 789 else 790 mode_vsync_polarity = ADV7511_SYNC_POLARITY_HIGH; 791 792 if (adv7511->hsync_polarity != mode_hsync_polarity && 793 adv7511->hsync_polarity != 794 ADV7511_SYNC_POLARITY_PASSTHROUGH) 795 hsync_polarity = 1; 796 797 if (adv7511->vsync_polarity != mode_vsync_polarity && 798 adv7511->vsync_polarity != 799 ADV7511_SYNC_POLARITY_PASSTHROUGH) 800 vsync_polarity = 1; 801 } 802 803 if (drm_mode_vrefresh(mode) <= 24) 804 low_refresh_rate = ADV7511_LOW_REFRESH_RATE_24HZ; 805 else if (drm_mode_vrefresh(mode) <= 25) 806 low_refresh_rate = ADV7511_LOW_REFRESH_RATE_25HZ; 807 else if (drm_mode_vrefresh(mode) <= 30) 808 low_refresh_rate = ADV7511_LOW_REFRESH_RATE_30HZ; 809 else 810 low_refresh_rate = ADV7511_LOW_REFRESH_RATE_NONE; 811 812 if (adv7511->info->type == ADV7511) 813 regmap_update_bits(adv7511->regmap, 0xfb, 814 0x6, low_refresh_rate << 1); 815 else 816 regmap_update_bits(adv7511->regmap, 0x4a, 817 0xc, low_refresh_rate << 2); 818 819 regmap_update_bits(adv7511->regmap, 0x17, 820 0x60, (vsync_polarity << 6) | (hsync_polarity << 5)); 821 822 drm_mode_copy(&adv7511->curr_mode, adj_mode); 823 824 /* 825 * TODO Test first order 4:2:2 to 4:4:4 up conversion method, which is 826 * supposed to give better results. 827 */ 828 829 adv7511->f_tmds = mode->clock; 830 } 831 832 /* ----------------------------------------------------------------------------- 833 * DRM Connector Operations 834 */ 835 836 static struct adv7511 *connector_to_adv7511(struct drm_connector *connector) 837 { 838 return container_of(connector, struct adv7511, connector); 839 } 840 841 static int adv7511_connector_get_modes(struct drm_connector *connector) 842 { 843 struct adv7511 *adv = connector_to_adv7511(connector); 844 845 return adv7511_get_modes(adv, connector); 846 } 847 848 static enum drm_mode_status 849 adv7511_connector_mode_valid(struct drm_connector *connector, 850 struct drm_display_mode *mode) 851 { 852 struct adv7511 *adv = connector_to_adv7511(connector); 853 854 return adv7511_mode_valid(adv, mode); 855 } 856 857 static struct drm_connector_helper_funcs adv7511_connector_helper_funcs = { 858 .get_modes = adv7511_connector_get_modes, 859 .mode_valid = adv7511_connector_mode_valid, 860 }; 861 862 static enum drm_connector_status 863 adv7511_connector_detect(struct drm_connector *connector, bool force) 864 { 865 struct adv7511 *adv = connector_to_adv7511(connector); 866 867 return adv7511_detect(adv, connector); 868 } 869 870 static const struct drm_connector_funcs adv7511_connector_funcs = { 871 .fill_modes = drm_helper_probe_single_connector_modes, 872 .detect = adv7511_connector_detect, 873 .destroy = drm_connector_cleanup, 874 .reset = drm_atomic_helper_connector_reset, 875 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, 876 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, 877 }; 878 879 static int adv7511_connector_init(struct adv7511 *adv) 880 { 881 struct drm_bridge *bridge = &adv->bridge; 882 int ret; 883 884 if (!bridge->encoder) { 885 DRM_ERROR("Parent encoder object not found"); 886 return -ENODEV; 887 } 888 889 if (adv->i2c_main->irq) 890 adv->connector.polled = DRM_CONNECTOR_POLL_HPD; 891 else 892 adv->connector.polled = DRM_CONNECTOR_POLL_CONNECT | 893 DRM_CONNECTOR_POLL_DISCONNECT; 894 895 ret = drm_connector_init(bridge->dev, &adv->connector, 896 &adv7511_connector_funcs, 897 DRM_MODE_CONNECTOR_HDMIA); 898 if (ret < 0) { 899 DRM_ERROR("Failed to initialize connector with drm\n"); 900 return ret; 901 } 902 drm_connector_helper_add(&adv->connector, 903 &adv7511_connector_helper_funcs); 904 drm_connector_attach_encoder(&adv->connector, bridge->encoder); 905 906 return 0; 907 } 908 909 /* ----------------------------------------------------------------------------- 910 * DRM Bridge Operations 911 */ 912 913 static struct adv7511 *bridge_to_adv7511(struct drm_bridge *bridge) 914 { 915 return container_of(bridge, struct adv7511, bridge); 916 } 917 918 static void adv7511_bridge_enable(struct drm_bridge *bridge) 919 { 920 struct adv7511 *adv = bridge_to_adv7511(bridge); 921 922 adv7511_power_on(adv); 923 } 924 925 static void adv7511_bridge_disable(struct drm_bridge *bridge) 926 { 927 struct adv7511 *adv = bridge_to_adv7511(bridge); 928 929 adv7511_power_off(adv); 930 } 931 932 static void adv7511_bridge_mode_set(struct drm_bridge *bridge, 933 const struct drm_display_mode *mode, 934 const struct drm_display_mode *adj_mode) 935 { 936 struct adv7511 *adv = bridge_to_adv7511(bridge); 937 938 adv7511_mode_set(adv, mode, adj_mode); 939 } 940 941 static enum drm_mode_status adv7511_bridge_mode_valid(struct drm_bridge *bridge, 942 const struct drm_display_info *info, 943 const struct drm_display_mode *mode) 944 { 945 struct adv7511 *adv = bridge_to_adv7511(bridge); 946 947 if (adv->info->has_dsi) 948 return adv7533_mode_valid(adv, mode); 949 else 950 return adv7511_mode_valid(adv, mode); 951 } 952 953 static int adv7511_bridge_attach(struct drm_bridge *bridge, 954 enum drm_bridge_attach_flags flags) 955 { 956 struct adv7511 *adv = bridge_to_adv7511(bridge); 957 int ret = 0; 958 959 if (adv->next_bridge) { 960 ret = drm_bridge_attach(bridge->encoder, adv->next_bridge, bridge, 961 flags | DRM_BRIDGE_ATTACH_NO_CONNECTOR); 962 if (ret) 963 return ret; 964 } 965 966 if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) { 967 ret = adv7511_connector_init(adv); 968 if (ret < 0) 969 return ret; 970 } 971 972 if (adv->i2c_main->irq) 973 regmap_write(adv->regmap, ADV7511_REG_INT_ENABLE(0), 974 ADV7511_INT0_HPD); 975 976 return ret; 977 } 978 979 static enum drm_connector_status adv7511_bridge_detect(struct drm_bridge *bridge) 980 { 981 struct adv7511 *adv = bridge_to_adv7511(bridge); 982 983 return adv7511_detect(adv, NULL); 984 } 985 986 static const struct drm_edid *adv7511_bridge_edid_read(struct drm_bridge *bridge, 987 struct drm_connector *connector) 988 { 989 struct adv7511 *adv = bridge_to_adv7511(bridge); 990 991 return adv7511_edid_read(adv, connector); 992 } 993 994 static void adv7511_bridge_hpd_notify(struct drm_bridge *bridge, 995 enum drm_connector_status status) 996 { 997 struct adv7511 *adv = bridge_to_adv7511(bridge); 998 999 if (status == connector_status_disconnected) 1000 cec_phys_addr_invalidate(adv->cec_adap); 1001 } 1002 1003 static const struct drm_bridge_funcs adv7511_bridge_funcs = { 1004 .enable = adv7511_bridge_enable, 1005 .disable = adv7511_bridge_disable, 1006 .mode_set = adv7511_bridge_mode_set, 1007 .mode_valid = adv7511_bridge_mode_valid, 1008 .attach = adv7511_bridge_attach, 1009 .detect = adv7511_bridge_detect, 1010 .edid_read = adv7511_bridge_edid_read, 1011 .hpd_notify = adv7511_bridge_hpd_notify, 1012 }; 1013 1014 /* ----------------------------------------------------------------------------- 1015 * Probe & remove 1016 */ 1017 1018 static const char * const adv7511_supply_names[] = { 1019 "avdd", 1020 "dvdd", 1021 "pvdd", 1022 "bgvdd", 1023 "dvdd-3v", 1024 }; 1025 1026 static const char * const adv7533_supply_names[] = { 1027 "avdd", 1028 "dvdd", 1029 "pvdd", 1030 "a2vdd", 1031 "v3p3", 1032 "v1p2", 1033 }; 1034 1035 static int adv7511_init_regulators(struct adv7511 *adv) 1036 { 1037 const char * const *supply_names = adv->info->supply_names; 1038 unsigned int num_supplies = adv->info->num_supplies; 1039 struct device *dev = &adv->i2c_main->dev; 1040 unsigned int i; 1041 int ret; 1042 1043 adv->supplies = devm_kcalloc(dev, num_supplies, 1044 sizeof(*adv->supplies), GFP_KERNEL); 1045 if (!adv->supplies) 1046 return -ENOMEM; 1047 1048 for (i = 0; i < num_supplies; i++) 1049 adv->supplies[i].supply = supply_names[i]; 1050 1051 ret = devm_regulator_bulk_get(dev, num_supplies, adv->supplies); 1052 if (ret) 1053 return ret; 1054 1055 return regulator_bulk_enable(num_supplies, adv->supplies); 1056 } 1057 1058 static void adv7511_uninit_regulators(struct adv7511 *adv) 1059 { 1060 regulator_bulk_disable(adv->info->num_supplies, adv->supplies); 1061 } 1062 1063 static bool adv7511_cec_register_volatile(struct device *dev, unsigned int reg) 1064 { 1065 struct i2c_client *i2c = to_i2c_client(dev); 1066 struct adv7511 *adv7511 = i2c_get_clientdata(i2c); 1067 1068 reg -= adv7511->info->reg_cec_offset; 1069 1070 switch (reg) { 1071 case ADV7511_REG_CEC_RX1_FRAME_HDR: 1072 case ADV7511_REG_CEC_RX1_FRAME_DATA0 ... ADV7511_REG_CEC_RX1_FRAME_DATA0 + 14: 1073 case ADV7511_REG_CEC_RX1_FRAME_LEN: 1074 case ADV7511_REG_CEC_RX2_FRAME_HDR: 1075 case ADV7511_REG_CEC_RX2_FRAME_DATA0 ... ADV7511_REG_CEC_RX2_FRAME_DATA0 + 14: 1076 case ADV7511_REG_CEC_RX2_FRAME_LEN: 1077 case ADV7511_REG_CEC_RX3_FRAME_HDR: 1078 case ADV7511_REG_CEC_RX3_FRAME_DATA0 ... ADV7511_REG_CEC_RX3_FRAME_DATA0 + 14: 1079 case ADV7511_REG_CEC_RX3_FRAME_LEN: 1080 case ADV7511_REG_CEC_RX_STATUS: 1081 case ADV7511_REG_CEC_RX_BUFFERS: 1082 case ADV7511_REG_CEC_TX_LOW_DRV_CNT: 1083 return true; 1084 } 1085 1086 return false; 1087 } 1088 1089 static const struct regmap_config adv7511_cec_regmap_config = { 1090 .reg_bits = 8, 1091 .val_bits = 8, 1092 1093 .max_register = 0xff, 1094 .cache_type = REGCACHE_MAPLE, 1095 .volatile_reg = adv7511_cec_register_volatile, 1096 }; 1097 1098 static int adv7511_init_cec_regmap(struct adv7511 *adv) 1099 { 1100 int ret; 1101 1102 adv->i2c_cec = i2c_new_ancillary_device(adv->i2c_main, "cec", 1103 ADV7511_CEC_I2C_ADDR_DEFAULT); 1104 if (IS_ERR(adv->i2c_cec)) 1105 return PTR_ERR(adv->i2c_cec); 1106 1107 regmap_write(adv->regmap, ADV7511_REG_CEC_I2C_ADDR, 1108 adv->i2c_cec->addr << 1); 1109 1110 i2c_set_clientdata(adv->i2c_cec, adv); 1111 1112 adv->regmap_cec = devm_regmap_init_i2c(adv->i2c_cec, 1113 &adv7511_cec_regmap_config); 1114 if (IS_ERR(adv->regmap_cec)) { 1115 ret = PTR_ERR(adv->regmap_cec); 1116 goto err; 1117 } 1118 1119 if (adv->info->reg_cec_offset == ADV7533_REG_CEC_OFFSET) { 1120 ret = adv7533_patch_cec_registers(adv); 1121 if (ret) 1122 goto err; 1123 } 1124 1125 return 0; 1126 err: 1127 i2c_unregister_device(adv->i2c_cec); 1128 return ret; 1129 } 1130 1131 static int adv7511_parse_dt(struct device_node *np, 1132 struct adv7511_link_config *config) 1133 { 1134 const char *str; 1135 int ret; 1136 1137 of_property_read_u32(np, "adi,input-depth", &config->input_color_depth); 1138 if (config->input_color_depth != 8 && config->input_color_depth != 10 && 1139 config->input_color_depth != 12) 1140 return -EINVAL; 1141 1142 ret = of_property_read_string(np, "adi,input-colorspace", &str); 1143 if (ret < 0) 1144 return ret; 1145 1146 if (!strcmp(str, "rgb")) 1147 config->input_colorspace = HDMI_COLORSPACE_RGB; 1148 else if (!strcmp(str, "yuv422")) 1149 config->input_colorspace = HDMI_COLORSPACE_YUV422; 1150 else if (!strcmp(str, "yuv444")) 1151 config->input_colorspace = HDMI_COLORSPACE_YUV444; 1152 else 1153 return -EINVAL; 1154 1155 ret = of_property_read_string(np, "adi,input-clock", &str); 1156 if (ret < 0) 1157 return ret; 1158 1159 if (!strcmp(str, "1x")) 1160 config->input_clock = ADV7511_INPUT_CLOCK_1X; 1161 else if (!strcmp(str, "2x")) 1162 config->input_clock = ADV7511_INPUT_CLOCK_2X; 1163 else if (!strcmp(str, "ddr")) 1164 config->input_clock = ADV7511_INPUT_CLOCK_DDR; 1165 else 1166 return -EINVAL; 1167 1168 if (config->input_colorspace == HDMI_COLORSPACE_YUV422 || 1169 config->input_clock != ADV7511_INPUT_CLOCK_1X) { 1170 ret = of_property_read_u32(np, "adi,input-style", 1171 &config->input_style); 1172 if (ret) 1173 return ret; 1174 1175 if (config->input_style < 1 || config->input_style > 3) 1176 return -EINVAL; 1177 1178 ret = of_property_read_string(np, "adi,input-justification", 1179 &str); 1180 if (ret < 0) 1181 return ret; 1182 1183 if (!strcmp(str, "left")) 1184 config->input_justification = 1185 ADV7511_INPUT_JUSTIFICATION_LEFT; 1186 else if (!strcmp(str, "evenly")) 1187 config->input_justification = 1188 ADV7511_INPUT_JUSTIFICATION_EVENLY; 1189 else if (!strcmp(str, "right")) 1190 config->input_justification = 1191 ADV7511_INPUT_JUSTIFICATION_RIGHT; 1192 else 1193 return -EINVAL; 1194 1195 } else { 1196 config->input_style = 1; 1197 config->input_justification = ADV7511_INPUT_JUSTIFICATION_LEFT; 1198 } 1199 1200 of_property_read_u32(np, "adi,clock-delay", &config->clock_delay); 1201 if (config->clock_delay < -1200 || config->clock_delay > 1600) 1202 return -EINVAL; 1203 1204 config->embedded_sync = of_property_read_bool(np, "adi,embedded-sync"); 1205 1206 /* Hardcode the sync pulse configurations for now. */ 1207 config->sync_pulse = ADV7511_INPUT_SYNC_PULSE_NONE; 1208 config->vsync_polarity = ADV7511_SYNC_POLARITY_PASSTHROUGH; 1209 config->hsync_polarity = ADV7511_SYNC_POLARITY_PASSTHROUGH; 1210 1211 return 0; 1212 } 1213 1214 static int adv7511_probe(struct i2c_client *i2c) 1215 { 1216 struct adv7511_link_config link_config; 1217 struct adv7511 *adv7511; 1218 struct device *dev = &i2c->dev; 1219 unsigned int val; 1220 int ret; 1221 1222 if (!dev->of_node) 1223 return -EINVAL; 1224 1225 adv7511 = devm_kzalloc(dev, sizeof(*adv7511), GFP_KERNEL); 1226 if (!adv7511) 1227 return -ENOMEM; 1228 1229 adv7511->i2c_main = i2c; 1230 adv7511->powered = false; 1231 adv7511->status = connector_status_disconnected; 1232 adv7511->info = i2c_get_match_data(i2c); 1233 1234 memset(&link_config, 0, sizeof(link_config)); 1235 1236 ret = drm_of_find_panel_or_bridge(dev->of_node, 1, -1, NULL, 1237 &adv7511->next_bridge); 1238 if (ret && ret != -ENODEV) 1239 return ret; 1240 1241 if (adv7511->info->link_config) 1242 ret = adv7511_parse_dt(dev->of_node, &link_config); 1243 else 1244 ret = adv7533_parse_dt(dev->of_node, adv7511); 1245 if (ret) 1246 return ret; 1247 1248 ret = adv7511_init_regulators(adv7511); 1249 if (ret) 1250 return dev_err_probe(dev, ret, "failed to init regulators\n"); 1251 1252 /* 1253 * The power down GPIO is optional. If present, toggle it from active to 1254 * inactive to wake up the encoder. 1255 */ 1256 adv7511->gpio_pd = devm_gpiod_get_optional(dev, "pd", GPIOD_OUT_HIGH); 1257 if (IS_ERR(adv7511->gpio_pd)) { 1258 ret = PTR_ERR(adv7511->gpio_pd); 1259 goto uninit_regulators; 1260 } 1261 1262 if (adv7511->gpio_pd) { 1263 usleep_range(5000, 6000); 1264 gpiod_set_value_cansleep(adv7511->gpio_pd, 0); 1265 } 1266 1267 adv7511->regmap = devm_regmap_init_i2c(i2c, &adv7511_regmap_config); 1268 if (IS_ERR(adv7511->regmap)) { 1269 ret = PTR_ERR(adv7511->regmap); 1270 goto uninit_regulators; 1271 } 1272 1273 ret = regmap_read(adv7511->regmap, ADV7511_REG_CHIP_REVISION, &val); 1274 if (ret) 1275 goto uninit_regulators; 1276 dev_dbg(dev, "Rev. %d\n", val); 1277 1278 if (adv7511->info->type == ADV7511) 1279 ret = regmap_register_patch(adv7511->regmap, 1280 adv7511_fixed_registers, 1281 ARRAY_SIZE(adv7511_fixed_registers)); 1282 else 1283 ret = adv7533_patch_registers(adv7511); 1284 if (ret) 1285 goto uninit_regulators; 1286 1287 adv7511_packet_disable(adv7511, 0xffff); 1288 1289 adv7511->i2c_edid = i2c_new_ancillary_device(i2c, "edid", 1290 ADV7511_EDID_I2C_ADDR_DEFAULT); 1291 if (IS_ERR(adv7511->i2c_edid)) { 1292 ret = PTR_ERR(adv7511->i2c_edid); 1293 goto uninit_regulators; 1294 } 1295 1296 regmap_write(adv7511->regmap, ADV7511_REG_EDID_I2C_ADDR, 1297 adv7511->i2c_edid->addr << 1); 1298 1299 adv7511->i2c_packet = i2c_new_ancillary_device(i2c, "packet", 1300 ADV7511_PACKET_I2C_ADDR_DEFAULT); 1301 if (IS_ERR(adv7511->i2c_packet)) { 1302 ret = PTR_ERR(adv7511->i2c_packet); 1303 goto err_i2c_unregister_edid; 1304 } 1305 1306 regmap_write(adv7511->regmap, ADV7511_REG_PACKET_I2C_ADDR, 1307 adv7511->i2c_packet->addr << 1); 1308 1309 ret = adv7511_init_cec_regmap(adv7511); 1310 if (ret) 1311 goto err_i2c_unregister_packet; 1312 1313 INIT_WORK(&adv7511->hpd_work, adv7511_hpd_work); 1314 1315 adv7511_power_off(adv7511); 1316 1317 i2c_set_clientdata(i2c, adv7511); 1318 1319 if (adv7511->info->link_config) 1320 adv7511_set_link_config(adv7511, &link_config); 1321 1322 ret = adv7511_cec_init(dev, adv7511); 1323 if (ret) 1324 goto err_unregister_cec; 1325 1326 adv7511->bridge.funcs = &adv7511_bridge_funcs; 1327 adv7511->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID; 1328 if (adv7511->i2c_main->irq) 1329 adv7511->bridge.ops |= DRM_BRIDGE_OP_HPD; 1330 1331 adv7511->bridge.of_node = dev->of_node; 1332 adv7511->bridge.type = DRM_MODE_CONNECTOR_HDMIA; 1333 1334 drm_bridge_add(&adv7511->bridge); 1335 1336 adv7511_audio_init(dev, adv7511); 1337 1338 if (i2c->irq) { 1339 init_waitqueue_head(&adv7511->wq); 1340 1341 ret = devm_request_threaded_irq(dev, i2c->irq, NULL, 1342 adv7511_irq_handler, 1343 IRQF_ONESHOT | IRQF_SHARED, 1344 dev_name(dev), 1345 adv7511); 1346 if (ret) 1347 goto err_unregister_audio; 1348 } 1349 1350 if (adv7511->info->has_dsi) { 1351 ret = adv7533_attach_dsi(adv7511); 1352 if (ret) 1353 goto err_unregister_audio; 1354 } 1355 1356 return 0; 1357 1358 err_unregister_audio: 1359 adv7511_audio_exit(adv7511); 1360 drm_bridge_remove(&adv7511->bridge); 1361 err_unregister_cec: 1362 cec_unregister_adapter(adv7511->cec_adap); 1363 i2c_unregister_device(adv7511->i2c_cec); 1364 clk_disable_unprepare(adv7511->cec_clk); 1365 err_i2c_unregister_packet: 1366 i2c_unregister_device(adv7511->i2c_packet); 1367 err_i2c_unregister_edid: 1368 i2c_unregister_device(adv7511->i2c_edid); 1369 uninit_regulators: 1370 adv7511_uninit_regulators(adv7511); 1371 1372 return ret; 1373 } 1374 1375 static void adv7511_remove(struct i2c_client *i2c) 1376 { 1377 struct adv7511 *adv7511 = i2c_get_clientdata(i2c); 1378 1379 adv7511_uninit_regulators(adv7511); 1380 1381 drm_bridge_remove(&adv7511->bridge); 1382 1383 adv7511_audio_exit(adv7511); 1384 1385 cec_unregister_adapter(adv7511->cec_adap); 1386 i2c_unregister_device(adv7511->i2c_cec); 1387 clk_disable_unprepare(adv7511->cec_clk); 1388 1389 i2c_unregister_device(adv7511->i2c_packet); 1390 i2c_unregister_device(adv7511->i2c_edid); 1391 } 1392 1393 static const struct adv7511_chip_info adv7511_chip_info = { 1394 .type = ADV7511, 1395 .supply_names = adv7511_supply_names, 1396 .num_supplies = ARRAY_SIZE(adv7511_supply_names), 1397 .link_config = true, 1398 }; 1399 1400 static const struct adv7511_chip_info adv7533_chip_info = { 1401 .type = ADV7533, 1402 .max_mode_clock_khz = 80000, 1403 .max_lane_freq_khz = 800000, 1404 .supply_names = adv7533_supply_names, 1405 .num_supplies = ARRAY_SIZE(adv7533_supply_names), 1406 .reg_cec_offset = ADV7533_REG_CEC_OFFSET, 1407 .has_dsi = true, 1408 }; 1409 1410 static const struct adv7511_chip_info adv7535_chip_info = { 1411 .type = ADV7535, 1412 .max_mode_clock_khz = 148500, 1413 .max_lane_freq_khz = 891000, 1414 .supply_names = adv7533_supply_names, 1415 .num_supplies = ARRAY_SIZE(adv7533_supply_names), 1416 .reg_cec_offset = ADV7533_REG_CEC_OFFSET, 1417 .has_dsi = true, 1418 .hpd_override_enable = true, 1419 }; 1420 1421 static const struct i2c_device_id adv7511_i2c_ids[] = { 1422 { "adv7511", (kernel_ulong_t)&adv7511_chip_info }, 1423 { "adv7511w", (kernel_ulong_t)&adv7511_chip_info }, 1424 { "adv7513", (kernel_ulong_t)&adv7511_chip_info }, 1425 { "adv7533", (kernel_ulong_t)&adv7533_chip_info }, 1426 { "adv7535", (kernel_ulong_t)&adv7535_chip_info }, 1427 { } 1428 }; 1429 MODULE_DEVICE_TABLE(i2c, adv7511_i2c_ids); 1430 1431 static const struct of_device_id adv7511_of_ids[] = { 1432 { .compatible = "adi,adv7511", .data = &adv7511_chip_info }, 1433 { .compatible = "adi,adv7511w", .data = &adv7511_chip_info }, 1434 { .compatible = "adi,adv7513", .data = &adv7511_chip_info }, 1435 { .compatible = "adi,adv7533", .data = &adv7533_chip_info }, 1436 { .compatible = "adi,adv7535", .data = &adv7535_chip_info }, 1437 { } 1438 }; 1439 MODULE_DEVICE_TABLE(of, adv7511_of_ids); 1440 1441 static struct mipi_dsi_driver adv7533_dsi_driver = { 1442 .driver.name = "adv7533", 1443 }; 1444 1445 static struct i2c_driver adv7511_driver = { 1446 .driver = { 1447 .name = "adv7511", 1448 .of_match_table = adv7511_of_ids, 1449 }, 1450 .id_table = adv7511_i2c_ids, 1451 .probe = adv7511_probe, 1452 .remove = adv7511_remove, 1453 }; 1454 1455 static int __init adv7511_init(void) 1456 { 1457 int ret; 1458 1459 if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) { 1460 ret = mipi_dsi_driver_register(&adv7533_dsi_driver); 1461 if (ret) 1462 return ret; 1463 } 1464 1465 ret = i2c_add_driver(&adv7511_driver); 1466 if (ret) { 1467 if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) 1468 mipi_dsi_driver_unregister(&adv7533_dsi_driver); 1469 } 1470 1471 return ret; 1472 } 1473 module_init(adv7511_init); 1474 1475 static void __exit adv7511_exit(void) 1476 { 1477 i2c_del_driver(&adv7511_driver); 1478 1479 if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) 1480 mipi_dsi_driver_unregister(&adv7533_dsi_driver); 1481 } 1482 module_exit(adv7511_exit); 1483 1484 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>"); 1485 MODULE_DESCRIPTION("ADV7511 HDMI transmitter driver"); 1486 MODULE_LICENSE("GPL"); 1487