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 const 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 (adv->i2c_main->irq) 885 adv->connector.polled = DRM_CONNECTOR_POLL_HPD; 886 else 887 adv->connector.polled = DRM_CONNECTOR_POLL_CONNECT | 888 DRM_CONNECTOR_POLL_DISCONNECT; 889 890 ret = drm_connector_init(bridge->dev, &adv->connector, 891 &adv7511_connector_funcs, 892 DRM_MODE_CONNECTOR_HDMIA); 893 if (ret < 0) { 894 DRM_ERROR("Failed to initialize connector with drm\n"); 895 return ret; 896 } 897 drm_connector_helper_add(&adv->connector, 898 &adv7511_connector_helper_funcs); 899 drm_connector_attach_encoder(&adv->connector, bridge->encoder); 900 901 return 0; 902 } 903 904 /* ----------------------------------------------------------------------------- 905 * DRM Bridge Operations 906 */ 907 908 static struct adv7511 *bridge_to_adv7511(struct drm_bridge *bridge) 909 { 910 return container_of(bridge, struct adv7511, bridge); 911 } 912 913 static void adv7511_bridge_atomic_enable(struct drm_bridge *bridge, 914 struct drm_atomic_state *state) 915 { 916 struct adv7511 *adv = bridge_to_adv7511(bridge); 917 918 adv7511_power_on(adv); 919 } 920 921 static void adv7511_bridge_atomic_disable(struct drm_bridge *bridge, 922 struct drm_atomic_state *state) 923 { 924 struct adv7511 *adv = bridge_to_adv7511(bridge); 925 926 adv7511_power_off(adv); 927 } 928 929 static void adv7511_bridge_mode_set(struct drm_bridge *bridge, 930 const struct drm_display_mode *mode, 931 const struct drm_display_mode *adj_mode) 932 { 933 struct adv7511 *adv = bridge_to_adv7511(bridge); 934 935 adv7511_mode_set(adv, mode, adj_mode); 936 } 937 938 static enum drm_mode_status adv7511_bridge_mode_valid(struct drm_bridge *bridge, 939 const struct drm_display_info *info, 940 const struct drm_display_mode *mode) 941 { 942 struct adv7511 *adv = bridge_to_adv7511(bridge); 943 944 if (adv->info->has_dsi) 945 return adv7533_mode_valid(adv, mode); 946 else 947 return adv7511_mode_valid(adv, mode); 948 } 949 950 static int adv7511_bridge_attach(struct drm_bridge *bridge, 951 enum drm_bridge_attach_flags flags) 952 { 953 struct adv7511 *adv = bridge_to_adv7511(bridge); 954 int ret = 0; 955 956 if (adv->next_bridge) { 957 ret = drm_bridge_attach(bridge->encoder, adv->next_bridge, bridge, 958 flags | DRM_BRIDGE_ATTACH_NO_CONNECTOR); 959 if (ret) 960 return ret; 961 } 962 963 if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) { 964 ret = adv7511_connector_init(adv); 965 if (ret < 0) 966 return ret; 967 } 968 969 if (adv->i2c_main->irq) 970 regmap_write(adv->regmap, ADV7511_REG_INT_ENABLE(0), 971 ADV7511_INT0_HPD); 972 973 return ret; 974 } 975 976 static enum drm_connector_status adv7511_bridge_detect(struct drm_bridge *bridge) 977 { 978 struct adv7511 *adv = bridge_to_adv7511(bridge); 979 980 return adv7511_detect(adv, NULL); 981 } 982 983 static const struct drm_edid *adv7511_bridge_edid_read(struct drm_bridge *bridge, 984 struct drm_connector *connector) 985 { 986 struct adv7511 *adv = bridge_to_adv7511(bridge); 987 988 return adv7511_edid_read(adv, connector); 989 } 990 991 static void adv7511_bridge_hpd_notify(struct drm_bridge *bridge, 992 enum drm_connector_status status) 993 { 994 struct adv7511 *adv = bridge_to_adv7511(bridge); 995 996 if (status == connector_status_disconnected) 997 cec_phys_addr_invalidate(adv->cec_adap); 998 } 999 1000 static const struct drm_bridge_funcs adv7511_bridge_funcs = { 1001 .mode_set = adv7511_bridge_mode_set, 1002 .mode_valid = adv7511_bridge_mode_valid, 1003 .attach = adv7511_bridge_attach, 1004 .detect = adv7511_bridge_detect, 1005 .edid_read = adv7511_bridge_edid_read, 1006 .hpd_notify = adv7511_bridge_hpd_notify, 1007 1008 .atomic_enable = adv7511_bridge_atomic_enable, 1009 .atomic_disable = adv7511_bridge_atomic_disable, 1010 .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state, 1011 .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state, 1012 .atomic_reset = drm_atomic_helper_bridge_reset, 1013 }; 1014 1015 /* ----------------------------------------------------------------------------- 1016 * Probe & remove 1017 */ 1018 1019 static const char * const adv7511_supply_names[] = { 1020 "avdd", 1021 "dvdd", 1022 "pvdd", 1023 "bgvdd", 1024 "dvdd-3v", 1025 }; 1026 1027 static const char * const adv7533_supply_names[] = { 1028 "avdd", 1029 "dvdd", 1030 "pvdd", 1031 "a2vdd", 1032 "v3p3", 1033 "v1p2", 1034 }; 1035 1036 static int adv7511_init_regulators(struct adv7511 *adv) 1037 { 1038 const char * const *supply_names = adv->info->supply_names; 1039 unsigned int num_supplies = adv->info->num_supplies; 1040 struct device *dev = &adv->i2c_main->dev; 1041 unsigned int i; 1042 int ret; 1043 1044 adv->supplies = devm_kcalloc(dev, num_supplies, 1045 sizeof(*adv->supplies), GFP_KERNEL); 1046 if (!adv->supplies) 1047 return -ENOMEM; 1048 1049 for (i = 0; i < num_supplies; i++) 1050 adv->supplies[i].supply = supply_names[i]; 1051 1052 ret = devm_regulator_bulk_get(dev, num_supplies, adv->supplies); 1053 if (ret) 1054 return ret; 1055 1056 return regulator_bulk_enable(num_supplies, adv->supplies); 1057 } 1058 1059 static void adv7511_uninit_regulators(struct adv7511 *adv) 1060 { 1061 regulator_bulk_disable(adv->info->num_supplies, adv->supplies); 1062 } 1063 1064 static bool adv7511_cec_register_volatile(struct device *dev, unsigned int reg) 1065 { 1066 struct i2c_client *i2c = to_i2c_client(dev); 1067 struct adv7511 *adv7511 = i2c_get_clientdata(i2c); 1068 1069 reg -= adv7511->info->reg_cec_offset; 1070 1071 switch (reg) { 1072 case ADV7511_REG_CEC_RX1_FRAME_HDR: 1073 case ADV7511_REG_CEC_RX1_FRAME_DATA0 ... ADV7511_REG_CEC_RX1_FRAME_DATA0 + 14: 1074 case ADV7511_REG_CEC_RX1_FRAME_LEN: 1075 case ADV7511_REG_CEC_RX2_FRAME_HDR: 1076 case ADV7511_REG_CEC_RX2_FRAME_DATA0 ... ADV7511_REG_CEC_RX2_FRAME_DATA0 + 14: 1077 case ADV7511_REG_CEC_RX2_FRAME_LEN: 1078 case ADV7511_REG_CEC_RX3_FRAME_HDR: 1079 case ADV7511_REG_CEC_RX3_FRAME_DATA0 ... ADV7511_REG_CEC_RX3_FRAME_DATA0 + 14: 1080 case ADV7511_REG_CEC_RX3_FRAME_LEN: 1081 case ADV7511_REG_CEC_RX_STATUS: 1082 case ADV7511_REG_CEC_RX_BUFFERS: 1083 case ADV7511_REG_CEC_TX_LOW_DRV_CNT: 1084 return true; 1085 } 1086 1087 return false; 1088 } 1089 1090 static const struct regmap_config adv7511_cec_regmap_config = { 1091 .reg_bits = 8, 1092 .val_bits = 8, 1093 1094 .max_register = 0xff, 1095 .cache_type = REGCACHE_MAPLE, 1096 .volatile_reg = adv7511_cec_register_volatile, 1097 }; 1098 1099 static int adv7511_init_cec_regmap(struct adv7511 *adv) 1100 { 1101 int ret; 1102 1103 adv->i2c_cec = i2c_new_ancillary_device(adv->i2c_main, "cec", 1104 ADV7511_CEC_I2C_ADDR_DEFAULT); 1105 if (IS_ERR(adv->i2c_cec)) 1106 return PTR_ERR(adv->i2c_cec); 1107 1108 regmap_write(adv->regmap, ADV7511_REG_CEC_I2C_ADDR, 1109 adv->i2c_cec->addr << 1); 1110 1111 i2c_set_clientdata(adv->i2c_cec, adv); 1112 1113 adv->regmap_cec = devm_regmap_init_i2c(adv->i2c_cec, 1114 &adv7511_cec_regmap_config); 1115 if (IS_ERR(adv->regmap_cec)) { 1116 ret = PTR_ERR(adv->regmap_cec); 1117 goto err; 1118 } 1119 1120 if (adv->info->reg_cec_offset == ADV7533_REG_CEC_OFFSET) { 1121 ret = adv7533_patch_cec_registers(adv); 1122 if (ret) 1123 goto err; 1124 } 1125 1126 return 0; 1127 err: 1128 i2c_unregister_device(adv->i2c_cec); 1129 return ret; 1130 } 1131 1132 static int adv7511_parse_dt(struct device_node *np, 1133 struct adv7511_link_config *config) 1134 { 1135 const char *str; 1136 int ret; 1137 1138 of_property_read_u32(np, "adi,input-depth", &config->input_color_depth); 1139 if (config->input_color_depth != 8 && config->input_color_depth != 10 && 1140 config->input_color_depth != 12) 1141 return -EINVAL; 1142 1143 ret = of_property_read_string(np, "adi,input-colorspace", &str); 1144 if (ret < 0) 1145 return ret; 1146 1147 if (!strcmp(str, "rgb")) 1148 config->input_colorspace = HDMI_COLORSPACE_RGB; 1149 else if (!strcmp(str, "yuv422")) 1150 config->input_colorspace = HDMI_COLORSPACE_YUV422; 1151 else if (!strcmp(str, "yuv444")) 1152 config->input_colorspace = HDMI_COLORSPACE_YUV444; 1153 else 1154 return -EINVAL; 1155 1156 ret = of_property_read_string(np, "adi,input-clock", &str); 1157 if (ret < 0) 1158 return ret; 1159 1160 if (!strcmp(str, "1x")) 1161 config->input_clock = ADV7511_INPUT_CLOCK_1X; 1162 else if (!strcmp(str, "2x")) 1163 config->input_clock = ADV7511_INPUT_CLOCK_2X; 1164 else if (!strcmp(str, "ddr")) 1165 config->input_clock = ADV7511_INPUT_CLOCK_DDR; 1166 else 1167 return -EINVAL; 1168 1169 if (config->input_colorspace == HDMI_COLORSPACE_YUV422 || 1170 config->input_clock != ADV7511_INPUT_CLOCK_1X) { 1171 ret = of_property_read_u32(np, "adi,input-style", 1172 &config->input_style); 1173 if (ret) 1174 return ret; 1175 1176 if (config->input_style < 1 || config->input_style > 3) 1177 return -EINVAL; 1178 1179 ret = of_property_read_string(np, "adi,input-justification", 1180 &str); 1181 if (ret < 0) 1182 return ret; 1183 1184 if (!strcmp(str, "left")) 1185 config->input_justification = 1186 ADV7511_INPUT_JUSTIFICATION_LEFT; 1187 else if (!strcmp(str, "evenly")) 1188 config->input_justification = 1189 ADV7511_INPUT_JUSTIFICATION_EVENLY; 1190 else if (!strcmp(str, "right")) 1191 config->input_justification = 1192 ADV7511_INPUT_JUSTIFICATION_RIGHT; 1193 else 1194 return -EINVAL; 1195 1196 } else { 1197 config->input_style = 1; 1198 config->input_justification = ADV7511_INPUT_JUSTIFICATION_LEFT; 1199 } 1200 1201 of_property_read_u32(np, "adi,clock-delay", &config->clock_delay); 1202 if (config->clock_delay < -1200 || config->clock_delay > 1600) 1203 return -EINVAL; 1204 1205 config->embedded_sync = of_property_read_bool(np, "adi,embedded-sync"); 1206 1207 /* Hardcode the sync pulse configurations for now. */ 1208 config->sync_pulse = ADV7511_INPUT_SYNC_PULSE_NONE; 1209 config->vsync_polarity = ADV7511_SYNC_POLARITY_PASSTHROUGH; 1210 config->hsync_polarity = ADV7511_SYNC_POLARITY_PASSTHROUGH; 1211 1212 return 0; 1213 } 1214 1215 static int adv7511_probe(struct i2c_client *i2c) 1216 { 1217 struct adv7511_link_config link_config; 1218 struct adv7511 *adv7511; 1219 struct device *dev = &i2c->dev; 1220 unsigned int val; 1221 int ret; 1222 1223 if (!dev->of_node) 1224 return -EINVAL; 1225 1226 adv7511 = devm_kzalloc(dev, sizeof(*adv7511), GFP_KERNEL); 1227 if (!adv7511) 1228 return -ENOMEM; 1229 1230 adv7511->i2c_main = i2c; 1231 adv7511->powered = false; 1232 adv7511->status = connector_status_disconnected; 1233 adv7511->info = i2c_get_match_data(i2c); 1234 1235 memset(&link_config, 0, sizeof(link_config)); 1236 1237 ret = drm_of_find_panel_or_bridge(dev->of_node, 1, -1, NULL, 1238 &adv7511->next_bridge); 1239 if (ret && ret != -ENODEV) 1240 return ret; 1241 1242 if (adv7511->info->link_config) 1243 ret = adv7511_parse_dt(dev->of_node, &link_config); 1244 else 1245 ret = adv7533_parse_dt(dev->of_node, adv7511); 1246 if (ret) 1247 return ret; 1248 1249 ret = adv7511_init_regulators(adv7511); 1250 if (ret) { 1251 dev_err_probe(dev, ret, "failed to init regulators\n"); 1252 goto err_of_node_put; 1253 } 1254 1255 /* 1256 * The power down GPIO is optional. If present, toggle it from active to 1257 * inactive to wake up the encoder. 1258 */ 1259 adv7511->gpio_pd = devm_gpiod_get_optional(dev, "pd", GPIOD_OUT_HIGH); 1260 if (IS_ERR(adv7511->gpio_pd)) { 1261 ret = PTR_ERR(adv7511->gpio_pd); 1262 goto uninit_regulators; 1263 } 1264 1265 if (adv7511->gpio_pd) { 1266 usleep_range(5000, 6000); 1267 gpiod_set_value_cansleep(adv7511->gpio_pd, 0); 1268 } 1269 1270 adv7511->regmap = devm_regmap_init_i2c(i2c, &adv7511_regmap_config); 1271 if (IS_ERR(adv7511->regmap)) { 1272 ret = PTR_ERR(adv7511->regmap); 1273 goto uninit_regulators; 1274 } 1275 1276 ret = regmap_read(adv7511->regmap, ADV7511_REG_CHIP_REVISION, &val); 1277 if (ret) 1278 goto uninit_regulators; 1279 dev_dbg(dev, "Rev. %d\n", val); 1280 1281 if (adv7511->info->type == ADV7511) 1282 ret = regmap_register_patch(adv7511->regmap, 1283 adv7511_fixed_registers, 1284 ARRAY_SIZE(adv7511_fixed_registers)); 1285 else 1286 ret = adv7533_patch_registers(adv7511); 1287 if (ret) 1288 goto uninit_regulators; 1289 1290 adv7511_packet_disable(adv7511, 0xffff); 1291 1292 adv7511->i2c_edid = i2c_new_ancillary_device(i2c, "edid", 1293 ADV7511_EDID_I2C_ADDR_DEFAULT); 1294 if (IS_ERR(adv7511->i2c_edid)) { 1295 ret = PTR_ERR(adv7511->i2c_edid); 1296 goto uninit_regulators; 1297 } 1298 1299 regmap_write(adv7511->regmap, ADV7511_REG_EDID_I2C_ADDR, 1300 adv7511->i2c_edid->addr << 1); 1301 1302 adv7511->i2c_packet = i2c_new_ancillary_device(i2c, "packet", 1303 ADV7511_PACKET_I2C_ADDR_DEFAULT); 1304 if (IS_ERR(adv7511->i2c_packet)) { 1305 ret = PTR_ERR(adv7511->i2c_packet); 1306 goto err_i2c_unregister_edid; 1307 } 1308 1309 regmap_write(adv7511->regmap, ADV7511_REG_PACKET_I2C_ADDR, 1310 adv7511->i2c_packet->addr << 1); 1311 1312 ret = adv7511_init_cec_regmap(adv7511); 1313 if (ret) 1314 goto err_i2c_unregister_packet; 1315 1316 INIT_WORK(&adv7511->hpd_work, adv7511_hpd_work); 1317 1318 adv7511_power_off(adv7511); 1319 1320 i2c_set_clientdata(i2c, adv7511); 1321 1322 if (adv7511->info->link_config) 1323 adv7511_set_link_config(adv7511, &link_config); 1324 1325 ret = adv7511_cec_init(dev, adv7511); 1326 if (ret) 1327 goto err_unregister_cec; 1328 1329 adv7511->bridge.funcs = &adv7511_bridge_funcs; 1330 adv7511->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID; 1331 if (adv7511->i2c_main->irq) 1332 adv7511->bridge.ops |= DRM_BRIDGE_OP_HPD; 1333 1334 adv7511->bridge.of_node = dev->of_node; 1335 adv7511->bridge.type = DRM_MODE_CONNECTOR_HDMIA; 1336 1337 drm_bridge_add(&adv7511->bridge); 1338 1339 adv7511_audio_init(dev, adv7511); 1340 1341 if (i2c->irq) { 1342 init_waitqueue_head(&adv7511->wq); 1343 1344 ret = devm_request_threaded_irq(dev, i2c->irq, NULL, 1345 adv7511_irq_handler, 1346 IRQF_ONESHOT | IRQF_SHARED, 1347 dev_name(dev), 1348 adv7511); 1349 if (ret) 1350 goto err_unregister_audio; 1351 } 1352 1353 if (adv7511->info->has_dsi) { 1354 ret = adv7533_attach_dsi(adv7511); 1355 if (ret) 1356 goto err_unregister_audio; 1357 } 1358 1359 return 0; 1360 1361 err_unregister_audio: 1362 adv7511_audio_exit(adv7511); 1363 drm_bridge_remove(&adv7511->bridge); 1364 err_unregister_cec: 1365 cec_unregister_adapter(adv7511->cec_adap); 1366 i2c_unregister_device(adv7511->i2c_cec); 1367 clk_disable_unprepare(adv7511->cec_clk); 1368 err_i2c_unregister_packet: 1369 i2c_unregister_device(adv7511->i2c_packet); 1370 err_i2c_unregister_edid: 1371 i2c_unregister_device(adv7511->i2c_edid); 1372 uninit_regulators: 1373 adv7511_uninit_regulators(adv7511); 1374 err_of_node_put: 1375 of_node_put(adv7511->host_node); 1376 1377 return ret; 1378 } 1379 1380 static void adv7511_remove(struct i2c_client *i2c) 1381 { 1382 struct adv7511 *adv7511 = i2c_get_clientdata(i2c); 1383 1384 of_node_put(adv7511->host_node); 1385 1386 adv7511_uninit_regulators(adv7511); 1387 1388 drm_bridge_remove(&adv7511->bridge); 1389 1390 adv7511_audio_exit(adv7511); 1391 1392 cec_unregister_adapter(adv7511->cec_adap); 1393 i2c_unregister_device(adv7511->i2c_cec); 1394 clk_disable_unprepare(adv7511->cec_clk); 1395 1396 i2c_unregister_device(adv7511->i2c_packet); 1397 i2c_unregister_device(adv7511->i2c_edid); 1398 } 1399 1400 static const struct adv7511_chip_info adv7511_chip_info = { 1401 .type = ADV7511, 1402 .supply_names = adv7511_supply_names, 1403 .num_supplies = ARRAY_SIZE(adv7511_supply_names), 1404 .link_config = true, 1405 }; 1406 1407 static const struct adv7511_chip_info adv7533_chip_info = { 1408 .type = ADV7533, 1409 .max_mode_clock_khz = 80000, 1410 .max_lane_freq_khz = 800000, 1411 .supply_names = adv7533_supply_names, 1412 .num_supplies = ARRAY_SIZE(adv7533_supply_names), 1413 .reg_cec_offset = ADV7533_REG_CEC_OFFSET, 1414 .has_dsi = true, 1415 }; 1416 1417 static const struct adv7511_chip_info adv7535_chip_info = { 1418 .type = ADV7535, 1419 .max_mode_clock_khz = 148500, 1420 .max_lane_freq_khz = 891000, 1421 .supply_names = adv7533_supply_names, 1422 .num_supplies = ARRAY_SIZE(adv7533_supply_names), 1423 .reg_cec_offset = ADV7533_REG_CEC_OFFSET, 1424 .has_dsi = true, 1425 .hpd_override_enable = true, 1426 }; 1427 1428 static const struct i2c_device_id adv7511_i2c_ids[] = { 1429 { "adv7511", (kernel_ulong_t)&adv7511_chip_info }, 1430 { "adv7511w", (kernel_ulong_t)&adv7511_chip_info }, 1431 { "adv7513", (kernel_ulong_t)&adv7511_chip_info }, 1432 { "adv7533", (kernel_ulong_t)&adv7533_chip_info }, 1433 { "adv7535", (kernel_ulong_t)&adv7535_chip_info }, 1434 { } 1435 }; 1436 MODULE_DEVICE_TABLE(i2c, adv7511_i2c_ids); 1437 1438 static const struct of_device_id adv7511_of_ids[] = { 1439 { .compatible = "adi,adv7511", .data = &adv7511_chip_info }, 1440 { .compatible = "adi,adv7511w", .data = &adv7511_chip_info }, 1441 { .compatible = "adi,adv7513", .data = &adv7511_chip_info }, 1442 { .compatible = "adi,adv7533", .data = &adv7533_chip_info }, 1443 { .compatible = "adi,adv7535", .data = &adv7535_chip_info }, 1444 { } 1445 }; 1446 MODULE_DEVICE_TABLE(of, adv7511_of_ids); 1447 1448 static struct mipi_dsi_driver adv7533_dsi_driver = { 1449 .driver.name = "adv7533", 1450 }; 1451 1452 static struct i2c_driver adv7511_driver = { 1453 .driver = { 1454 .name = "adv7511", 1455 .of_match_table = adv7511_of_ids, 1456 }, 1457 .id_table = adv7511_i2c_ids, 1458 .probe = adv7511_probe, 1459 .remove = adv7511_remove, 1460 }; 1461 1462 static int __init adv7511_init(void) 1463 { 1464 int ret; 1465 1466 if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) { 1467 ret = mipi_dsi_driver_register(&adv7533_dsi_driver); 1468 if (ret) 1469 return ret; 1470 } 1471 1472 ret = i2c_add_driver(&adv7511_driver); 1473 if (ret) { 1474 if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) 1475 mipi_dsi_driver_unregister(&adv7533_dsi_driver); 1476 } 1477 1478 return ret; 1479 } 1480 module_init(adv7511_init); 1481 1482 static void __exit adv7511_exit(void) 1483 { 1484 i2c_del_driver(&adv7511_driver); 1485 1486 if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) 1487 mipi_dsi_driver_unregister(&adv7533_dsi_driver); 1488 } 1489 module_exit(adv7511_exit); 1490 1491 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>"); 1492 MODULE_DESCRIPTION("ADV7511 HDMI transmitter driver"); 1493 MODULE_LICENSE("GPL"); 1494