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_device.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_RBTREE, 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->type == ADV7535) 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->type == ADV7533 || adv7511->type == ADV7535) 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->type == ADV7535) 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->type == ADV7533 || adv7511->type == ADV7535) 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->type == ADV7535) 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 regmap_update_bits(adv7511->regmap, 0xfb, 790 0x6, low_refresh_rate << 1); 791 regmap_update_bits(adv7511->regmap, 0x17, 792 0x60, (vsync_polarity << 6) | (hsync_polarity << 5)); 793 794 drm_mode_copy(&adv7511->curr_mode, adj_mode); 795 796 /* 797 * TODO Test first order 4:2:2 to 4:4:4 up conversion method, which is 798 * supposed to give better results. 799 */ 800 801 adv7511->f_tmds = mode->clock; 802 } 803 804 /* ----------------------------------------------------------------------------- 805 * DRM Connector Operations 806 */ 807 808 static struct adv7511 *connector_to_adv7511(struct drm_connector *connector) 809 { 810 return container_of(connector, struct adv7511, connector); 811 } 812 813 static int adv7511_connector_get_modes(struct drm_connector *connector) 814 { 815 struct adv7511 *adv = connector_to_adv7511(connector); 816 817 return adv7511_get_modes(adv, connector); 818 } 819 820 static enum drm_mode_status 821 adv7511_connector_mode_valid(struct drm_connector *connector, 822 struct drm_display_mode *mode) 823 { 824 struct adv7511 *adv = connector_to_adv7511(connector); 825 826 return adv7511_mode_valid(adv, mode); 827 } 828 829 static struct drm_connector_helper_funcs adv7511_connector_helper_funcs = { 830 .get_modes = adv7511_connector_get_modes, 831 .mode_valid = adv7511_connector_mode_valid, 832 }; 833 834 static enum drm_connector_status 835 adv7511_connector_detect(struct drm_connector *connector, bool force) 836 { 837 struct adv7511 *adv = connector_to_adv7511(connector); 838 839 return adv7511_detect(adv, connector); 840 } 841 842 static const struct drm_connector_funcs adv7511_connector_funcs = { 843 .fill_modes = drm_helper_probe_single_connector_modes, 844 .detect = adv7511_connector_detect, 845 .destroy = drm_connector_cleanup, 846 .reset = drm_atomic_helper_connector_reset, 847 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, 848 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, 849 }; 850 851 static int adv7511_connector_init(struct adv7511 *adv) 852 { 853 struct drm_bridge *bridge = &adv->bridge; 854 int ret; 855 856 if (!bridge->encoder) { 857 DRM_ERROR("Parent encoder object not found"); 858 return -ENODEV; 859 } 860 861 if (adv->i2c_main->irq) 862 adv->connector.polled = DRM_CONNECTOR_POLL_HPD; 863 else 864 adv->connector.polled = DRM_CONNECTOR_POLL_CONNECT | 865 DRM_CONNECTOR_POLL_DISCONNECT; 866 867 ret = drm_connector_init(bridge->dev, &adv->connector, 868 &adv7511_connector_funcs, 869 DRM_MODE_CONNECTOR_HDMIA); 870 if (ret < 0) { 871 DRM_ERROR("Failed to initialize connector with drm\n"); 872 return ret; 873 } 874 drm_connector_helper_add(&adv->connector, 875 &adv7511_connector_helper_funcs); 876 drm_connector_attach_encoder(&adv->connector, bridge->encoder); 877 878 return 0; 879 } 880 881 /* ----------------------------------------------------------------------------- 882 * DRM Bridge Operations 883 */ 884 885 static struct adv7511 *bridge_to_adv7511(struct drm_bridge *bridge) 886 { 887 return container_of(bridge, struct adv7511, bridge); 888 } 889 890 static void adv7511_bridge_enable(struct drm_bridge *bridge) 891 { 892 struct adv7511 *adv = bridge_to_adv7511(bridge); 893 894 adv7511_power_on(adv); 895 } 896 897 static void adv7511_bridge_disable(struct drm_bridge *bridge) 898 { 899 struct adv7511 *adv = bridge_to_adv7511(bridge); 900 901 adv7511_power_off(adv); 902 } 903 904 static void adv7511_bridge_mode_set(struct drm_bridge *bridge, 905 const struct drm_display_mode *mode, 906 const struct drm_display_mode *adj_mode) 907 { 908 struct adv7511 *adv = bridge_to_adv7511(bridge); 909 910 adv7511_mode_set(adv, mode, adj_mode); 911 } 912 913 static enum drm_mode_status adv7511_bridge_mode_valid(struct drm_bridge *bridge, 914 const struct drm_display_info *info, 915 const struct drm_display_mode *mode) 916 { 917 struct adv7511 *adv = bridge_to_adv7511(bridge); 918 919 if (adv->type == ADV7533 || adv->type == ADV7535) 920 return adv7533_mode_valid(adv, mode); 921 else 922 return adv7511_mode_valid(adv, mode); 923 } 924 925 static int adv7511_bridge_attach(struct drm_bridge *bridge, 926 enum drm_bridge_attach_flags flags) 927 { 928 struct adv7511 *adv = bridge_to_adv7511(bridge); 929 int ret = 0; 930 931 if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) { 932 ret = adv7511_connector_init(adv); 933 if (ret < 0) 934 return ret; 935 } 936 937 if (adv->i2c_main->irq) 938 regmap_write(adv->regmap, ADV7511_REG_INT_ENABLE(0), 939 ADV7511_INT0_HPD); 940 941 return ret; 942 } 943 944 static enum drm_connector_status adv7511_bridge_detect(struct drm_bridge *bridge) 945 { 946 struct adv7511 *adv = bridge_to_adv7511(bridge); 947 948 return adv7511_detect(adv, NULL); 949 } 950 951 static struct edid *adv7511_bridge_get_edid(struct drm_bridge *bridge, 952 struct drm_connector *connector) 953 { 954 struct adv7511 *adv = bridge_to_adv7511(bridge); 955 956 return adv7511_get_edid(adv, connector); 957 } 958 959 static void adv7511_bridge_hpd_notify(struct drm_bridge *bridge, 960 enum drm_connector_status status) 961 { 962 struct adv7511 *adv = bridge_to_adv7511(bridge); 963 964 if (status == connector_status_disconnected) 965 cec_phys_addr_invalidate(adv->cec_adap); 966 } 967 968 static const struct drm_bridge_funcs adv7511_bridge_funcs = { 969 .enable = adv7511_bridge_enable, 970 .disable = adv7511_bridge_disable, 971 .mode_set = adv7511_bridge_mode_set, 972 .mode_valid = adv7511_bridge_mode_valid, 973 .attach = adv7511_bridge_attach, 974 .detect = adv7511_bridge_detect, 975 .get_edid = adv7511_bridge_get_edid, 976 .hpd_notify = adv7511_bridge_hpd_notify, 977 }; 978 979 /* ----------------------------------------------------------------------------- 980 * Probe & remove 981 */ 982 983 static const char * const adv7511_supply_names[] = { 984 "avdd", 985 "dvdd", 986 "pvdd", 987 "bgvdd", 988 "dvdd-3v", 989 }; 990 991 static const char * const adv7533_supply_names[] = { 992 "avdd", 993 "dvdd", 994 "pvdd", 995 "a2vdd", 996 "v3p3", 997 "v1p2", 998 }; 999 1000 static int adv7511_init_regulators(struct adv7511 *adv) 1001 { 1002 struct device *dev = &adv->i2c_main->dev; 1003 const char * const *supply_names; 1004 unsigned int i; 1005 int ret; 1006 1007 if (adv->type == ADV7511) { 1008 supply_names = adv7511_supply_names; 1009 adv->num_supplies = ARRAY_SIZE(adv7511_supply_names); 1010 } else { 1011 supply_names = adv7533_supply_names; 1012 adv->num_supplies = ARRAY_SIZE(adv7533_supply_names); 1013 } 1014 1015 adv->supplies = devm_kcalloc(dev, adv->num_supplies, 1016 sizeof(*adv->supplies), GFP_KERNEL); 1017 if (!adv->supplies) 1018 return -ENOMEM; 1019 1020 for (i = 0; i < adv->num_supplies; i++) 1021 adv->supplies[i].supply = supply_names[i]; 1022 1023 ret = devm_regulator_bulk_get(dev, adv->num_supplies, adv->supplies); 1024 if (ret) 1025 return ret; 1026 1027 return regulator_bulk_enable(adv->num_supplies, adv->supplies); 1028 } 1029 1030 static void adv7511_uninit_regulators(struct adv7511 *adv) 1031 { 1032 regulator_bulk_disable(adv->num_supplies, adv->supplies); 1033 } 1034 1035 static bool adv7511_cec_register_volatile(struct device *dev, unsigned int reg) 1036 { 1037 struct i2c_client *i2c = to_i2c_client(dev); 1038 struct adv7511 *adv7511 = i2c_get_clientdata(i2c); 1039 1040 reg -= adv7511->reg_cec_offset; 1041 1042 switch (reg) { 1043 case ADV7511_REG_CEC_RX1_FRAME_HDR: 1044 case ADV7511_REG_CEC_RX1_FRAME_DATA0 ... ADV7511_REG_CEC_RX1_FRAME_DATA0 + 14: 1045 case ADV7511_REG_CEC_RX1_FRAME_LEN: 1046 case ADV7511_REG_CEC_RX2_FRAME_HDR: 1047 case ADV7511_REG_CEC_RX2_FRAME_DATA0 ... ADV7511_REG_CEC_RX2_FRAME_DATA0 + 14: 1048 case ADV7511_REG_CEC_RX2_FRAME_LEN: 1049 case ADV7511_REG_CEC_RX3_FRAME_HDR: 1050 case ADV7511_REG_CEC_RX3_FRAME_DATA0 ... ADV7511_REG_CEC_RX3_FRAME_DATA0 + 14: 1051 case ADV7511_REG_CEC_RX3_FRAME_LEN: 1052 case ADV7511_REG_CEC_RX_STATUS: 1053 case ADV7511_REG_CEC_RX_BUFFERS: 1054 case ADV7511_REG_CEC_TX_LOW_DRV_CNT: 1055 return true; 1056 } 1057 1058 return false; 1059 } 1060 1061 static const struct regmap_config adv7511_cec_regmap_config = { 1062 .reg_bits = 8, 1063 .val_bits = 8, 1064 1065 .max_register = 0xff, 1066 .cache_type = REGCACHE_RBTREE, 1067 .volatile_reg = adv7511_cec_register_volatile, 1068 }; 1069 1070 static int adv7511_init_cec_regmap(struct adv7511 *adv) 1071 { 1072 int ret; 1073 1074 adv->i2c_cec = i2c_new_ancillary_device(adv->i2c_main, "cec", 1075 ADV7511_CEC_I2C_ADDR_DEFAULT); 1076 if (IS_ERR(adv->i2c_cec)) 1077 return PTR_ERR(adv->i2c_cec); 1078 1079 regmap_write(adv->regmap, ADV7511_REG_CEC_I2C_ADDR, 1080 adv->i2c_cec->addr << 1); 1081 1082 i2c_set_clientdata(adv->i2c_cec, adv); 1083 1084 adv->regmap_cec = devm_regmap_init_i2c(adv->i2c_cec, 1085 &adv7511_cec_regmap_config); 1086 if (IS_ERR(adv->regmap_cec)) { 1087 ret = PTR_ERR(adv->regmap_cec); 1088 goto err; 1089 } 1090 1091 if (adv->type == ADV7533 || adv->type == ADV7535) { 1092 ret = adv7533_patch_cec_registers(adv); 1093 if (ret) 1094 goto err; 1095 1096 adv->reg_cec_offset = ADV7533_REG_CEC_OFFSET; 1097 } 1098 1099 return 0; 1100 err: 1101 i2c_unregister_device(adv->i2c_cec); 1102 return ret; 1103 } 1104 1105 static int adv7511_parse_dt(struct device_node *np, 1106 struct adv7511_link_config *config) 1107 { 1108 const char *str; 1109 int ret; 1110 1111 of_property_read_u32(np, "adi,input-depth", &config->input_color_depth); 1112 if (config->input_color_depth != 8 && config->input_color_depth != 10 && 1113 config->input_color_depth != 12) 1114 return -EINVAL; 1115 1116 ret = of_property_read_string(np, "adi,input-colorspace", &str); 1117 if (ret < 0) 1118 return ret; 1119 1120 if (!strcmp(str, "rgb")) 1121 config->input_colorspace = HDMI_COLORSPACE_RGB; 1122 else if (!strcmp(str, "yuv422")) 1123 config->input_colorspace = HDMI_COLORSPACE_YUV422; 1124 else if (!strcmp(str, "yuv444")) 1125 config->input_colorspace = HDMI_COLORSPACE_YUV444; 1126 else 1127 return -EINVAL; 1128 1129 ret = of_property_read_string(np, "adi,input-clock", &str); 1130 if (ret < 0) 1131 return ret; 1132 1133 if (!strcmp(str, "1x")) 1134 config->input_clock = ADV7511_INPUT_CLOCK_1X; 1135 else if (!strcmp(str, "2x")) 1136 config->input_clock = ADV7511_INPUT_CLOCK_2X; 1137 else if (!strcmp(str, "ddr")) 1138 config->input_clock = ADV7511_INPUT_CLOCK_DDR; 1139 else 1140 return -EINVAL; 1141 1142 if (config->input_colorspace == HDMI_COLORSPACE_YUV422 || 1143 config->input_clock != ADV7511_INPUT_CLOCK_1X) { 1144 ret = of_property_read_u32(np, "adi,input-style", 1145 &config->input_style); 1146 if (ret) 1147 return ret; 1148 1149 if (config->input_style < 1 || config->input_style > 3) 1150 return -EINVAL; 1151 1152 ret = of_property_read_string(np, "adi,input-justification", 1153 &str); 1154 if (ret < 0) 1155 return ret; 1156 1157 if (!strcmp(str, "left")) 1158 config->input_justification = 1159 ADV7511_INPUT_JUSTIFICATION_LEFT; 1160 else if (!strcmp(str, "evenly")) 1161 config->input_justification = 1162 ADV7511_INPUT_JUSTIFICATION_EVENLY; 1163 else if (!strcmp(str, "right")) 1164 config->input_justification = 1165 ADV7511_INPUT_JUSTIFICATION_RIGHT; 1166 else 1167 return -EINVAL; 1168 1169 } else { 1170 config->input_style = 1; 1171 config->input_justification = ADV7511_INPUT_JUSTIFICATION_LEFT; 1172 } 1173 1174 of_property_read_u32(np, "adi,clock-delay", &config->clock_delay); 1175 if (config->clock_delay < -1200 || config->clock_delay > 1600) 1176 return -EINVAL; 1177 1178 config->embedded_sync = of_property_read_bool(np, "adi,embedded-sync"); 1179 1180 /* Hardcode the sync pulse configurations for now. */ 1181 config->sync_pulse = ADV7511_INPUT_SYNC_PULSE_NONE; 1182 config->vsync_polarity = ADV7511_SYNC_POLARITY_PASSTHROUGH; 1183 config->hsync_polarity = ADV7511_SYNC_POLARITY_PASSTHROUGH; 1184 1185 return 0; 1186 } 1187 1188 static int adv7511_probe(struct i2c_client *i2c) 1189 { 1190 const struct i2c_device_id *id = i2c_client_get_device_id(i2c); 1191 struct adv7511_link_config link_config; 1192 struct adv7511 *adv7511; 1193 struct device *dev = &i2c->dev; 1194 unsigned int val; 1195 int ret; 1196 1197 if (!dev->of_node) 1198 return -EINVAL; 1199 1200 adv7511 = devm_kzalloc(dev, sizeof(*adv7511), GFP_KERNEL); 1201 if (!adv7511) 1202 return -ENOMEM; 1203 1204 adv7511->i2c_main = i2c; 1205 adv7511->powered = false; 1206 adv7511->status = connector_status_disconnected; 1207 1208 if (dev->of_node) 1209 adv7511->type = (enum adv7511_type)of_device_get_match_data(dev); 1210 else 1211 adv7511->type = id->driver_data; 1212 1213 memset(&link_config, 0, sizeof(link_config)); 1214 1215 if (adv7511->type == ADV7511) 1216 ret = adv7511_parse_dt(dev->of_node, &link_config); 1217 else 1218 ret = adv7533_parse_dt(dev->of_node, adv7511); 1219 if (ret) 1220 return ret; 1221 1222 ret = adv7511_init_regulators(adv7511); 1223 if (ret) 1224 return dev_err_probe(dev, ret, "failed to init regulators\n"); 1225 1226 /* 1227 * The power down GPIO is optional. If present, toggle it from active to 1228 * inactive to wake up the encoder. 1229 */ 1230 adv7511->gpio_pd = devm_gpiod_get_optional(dev, "pd", GPIOD_OUT_HIGH); 1231 if (IS_ERR(adv7511->gpio_pd)) { 1232 ret = PTR_ERR(adv7511->gpio_pd); 1233 goto uninit_regulators; 1234 } 1235 1236 if (adv7511->gpio_pd) { 1237 usleep_range(5000, 6000); 1238 gpiod_set_value_cansleep(adv7511->gpio_pd, 0); 1239 } 1240 1241 adv7511->regmap = devm_regmap_init_i2c(i2c, &adv7511_regmap_config); 1242 if (IS_ERR(adv7511->regmap)) { 1243 ret = PTR_ERR(adv7511->regmap); 1244 goto uninit_regulators; 1245 } 1246 1247 ret = regmap_read(adv7511->regmap, ADV7511_REG_CHIP_REVISION, &val); 1248 if (ret) 1249 goto uninit_regulators; 1250 dev_dbg(dev, "Rev. %d\n", val); 1251 1252 if (adv7511->type == ADV7511) 1253 ret = regmap_register_patch(adv7511->regmap, 1254 adv7511_fixed_registers, 1255 ARRAY_SIZE(adv7511_fixed_registers)); 1256 else 1257 ret = adv7533_patch_registers(adv7511); 1258 if (ret) 1259 goto uninit_regulators; 1260 1261 adv7511_packet_disable(adv7511, 0xffff); 1262 1263 adv7511->i2c_edid = i2c_new_ancillary_device(i2c, "edid", 1264 ADV7511_EDID_I2C_ADDR_DEFAULT); 1265 if (IS_ERR(adv7511->i2c_edid)) { 1266 ret = PTR_ERR(adv7511->i2c_edid); 1267 goto uninit_regulators; 1268 } 1269 1270 regmap_write(adv7511->regmap, ADV7511_REG_EDID_I2C_ADDR, 1271 adv7511->i2c_edid->addr << 1); 1272 1273 adv7511->i2c_packet = i2c_new_ancillary_device(i2c, "packet", 1274 ADV7511_PACKET_I2C_ADDR_DEFAULT); 1275 if (IS_ERR(adv7511->i2c_packet)) { 1276 ret = PTR_ERR(adv7511->i2c_packet); 1277 goto err_i2c_unregister_edid; 1278 } 1279 1280 regmap_write(adv7511->regmap, ADV7511_REG_PACKET_I2C_ADDR, 1281 adv7511->i2c_packet->addr << 1); 1282 1283 ret = adv7511_init_cec_regmap(adv7511); 1284 if (ret) 1285 goto err_i2c_unregister_packet; 1286 1287 INIT_WORK(&adv7511->hpd_work, adv7511_hpd_work); 1288 1289 if (i2c->irq) { 1290 init_waitqueue_head(&adv7511->wq); 1291 1292 ret = devm_request_threaded_irq(dev, i2c->irq, NULL, 1293 adv7511_irq_handler, 1294 IRQF_ONESHOT, dev_name(dev), 1295 adv7511); 1296 if (ret) 1297 goto err_unregister_cec; 1298 } 1299 1300 adv7511_power_off(adv7511); 1301 1302 i2c_set_clientdata(i2c, adv7511); 1303 1304 if (adv7511->type == ADV7511) 1305 adv7511_set_link_config(adv7511, &link_config); 1306 1307 ret = adv7511_cec_init(dev, adv7511); 1308 if (ret) 1309 goto err_unregister_cec; 1310 1311 adv7511->bridge.funcs = &adv7511_bridge_funcs; 1312 adv7511->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID; 1313 if (adv7511->i2c_main->irq) 1314 adv7511->bridge.ops |= DRM_BRIDGE_OP_HPD; 1315 1316 adv7511->bridge.of_node = dev->of_node; 1317 adv7511->bridge.type = DRM_MODE_CONNECTOR_HDMIA; 1318 1319 drm_bridge_add(&adv7511->bridge); 1320 1321 adv7511_audio_init(dev, adv7511); 1322 1323 if (adv7511->type == ADV7533 || adv7511->type == ADV7535) { 1324 ret = adv7533_attach_dsi(adv7511); 1325 if (ret) 1326 goto err_unregister_audio; 1327 } 1328 1329 return 0; 1330 1331 err_unregister_audio: 1332 adv7511_audio_exit(adv7511); 1333 drm_bridge_remove(&adv7511->bridge); 1334 err_unregister_cec: 1335 cec_unregister_adapter(adv7511->cec_adap); 1336 i2c_unregister_device(adv7511->i2c_cec); 1337 clk_disable_unprepare(adv7511->cec_clk); 1338 err_i2c_unregister_packet: 1339 i2c_unregister_device(adv7511->i2c_packet); 1340 err_i2c_unregister_edid: 1341 i2c_unregister_device(adv7511->i2c_edid); 1342 uninit_regulators: 1343 adv7511_uninit_regulators(adv7511); 1344 1345 return ret; 1346 } 1347 1348 static void adv7511_remove(struct i2c_client *i2c) 1349 { 1350 struct adv7511 *adv7511 = i2c_get_clientdata(i2c); 1351 1352 adv7511_uninit_regulators(adv7511); 1353 1354 drm_bridge_remove(&adv7511->bridge); 1355 1356 adv7511_audio_exit(adv7511); 1357 1358 cec_unregister_adapter(adv7511->cec_adap); 1359 i2c_unregister_device(adv7511->i2c_cec); 1360 clk_disable_unprepare(adv7511->cec_clk); 1361 1362 i2c_unregister_device(adv7511->i2c_packet); 1363 i2c_unregister_device(adv7511->i2c_edid); 1364 } 1365 1366 static const struct i2c_device_id adv7511_i2c_ids[] = { 1367 { "adv7511", ADV7511 }, 1368 { "adv7511w", ADV7511 }, 1369 { "adv7513", ADV7511 }, 1370 { "adv7533", ADV7533 }, 1371 { "adv7535", ADV7535 }, 1372 { } 1373 }; 1374 MODULE_DEVICE_TABLE(i2c, adv7511_i2c_ids); 1375 1376 static const struct of_device_id adv7511_of_ids[] = { 1377 { .compatible = "adi,adv7511", .data = (void *)ADV7511 }, 1378 { .compatible = "adi,adv7511w", .data = (void *)ADV7511 }, 1379 { .compatible = "adi,adv7513", .data = (void *)ADV7511 }, 1380 { .compatible = "adi,adv7533", .data = (void *)ADV7533 }, 1381 { .compatible = "adi,adv7535", .data = (void *)ADV7535 }, 1382 { } 1383 }; 1384 MODULE_DEVICE_TABLE(of, adv7511_of_ids); 1385 1386 static struct mipi_dsi_driver adv7533_dsi_driver = { 1387 .driver.name = "adv7533", 1388 }; 1389 1390 static struct i2c_driver adv7511_driver = { 1391 .driver = { 1392 .name = "adv7511", 1393 .of_match_table = adv7511_of_ids, 1394 }, 1395 .id_table = adv7511_i2c_ids, 1396 .probe = adv7511_probe, 1397 .remove = adv7511_remove, 1398 }; 1399 1400 static int __init adv7511_init(void) 1401 { 1402 int ret; 1403 1404 if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) { 1405 ret = mipi_dsi_driver_register(&adv7533_dsi_driver); 1406 if (ret) 1407 return ret; 1408 } 1409 1410 ret = i2c_add_driver(&adv7511_driver); 1411 if (ret) { 1412 if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) 1413 mipi_dsi_driver_unregister(&adv7533_dsi_driver); 1414 } 1415 1416 return ret; 1417 } 1418 module_init(adv7511_init); 1419 1420 static void __exit adv7511_exit(void) 1421 { 1422 i2c_del_driver(&adv7511_driver); 1423 1424 if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) 1425 mipi_dsi_driver_unregister(&adv7533_dsi_driver); 1426 } 1427 module_exit(adv7511_exit); 1428 1429 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>"); 1430 MODULE_DESCRIPTION("ADV7511 HDMI transmitter driver"); 1431 MODULE_LICENSE("GPL"); 1432