drivers/gpu/drm/bridge/adv7511/adv7511_drv.c

   1 /*
   2  * Analog Devices ADV7511 HDMI transmitter driver
   3  *
   4  * Copyright 2012 Analog Devices Inc.
   5  *
   6  * Licensed under the GPL-2.
   7  */
   8
   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 #include <linux/clk.h>
  15
  16 #include <drm/drmP.h>
  17 #include <drm/drm_atomic.h>
  18 #include <drm/drm_atomic_helper.h>
  19 #include <drm/drm_edid.h>
  20
  21 #include <media/cec.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_YCRCB422) &&
 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.
 355          */
 356         regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2,
 357                            ADV7511_REG_POWER2_HPD_SRC_MASK,
 358                            ADV7511_REG_POWER2_HPD_SRC_NONE);
 359 }
 360
 361 static void adv7511_power_on(struct adv7511 *adv7511)
 362 {
 363         __adv7511_power_on(adv7511);
 364
 365         /*
 366          * Most of the registers are reset during power down or when HPD is low.
 367          */
 368         regcache_sync(adv7511->regmap);
 369
 370         if (adv7511->type == ADV7533)
 371                 adv7533_dsi_power_on(adv7511);
 372         adv7511->powered = true;
 373 }
 374
 375 static void __adv7511_power_off(struct adv7511 *adv7511)
 376 {
 377         /* TODO: setup additional power down modes */
 378         regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER,
 379                            ADV7511_POWER_POWER_DOWN,
 380                            ADV7511_POWER_POWER_DOWN);
 381         regmap_update_bits(adv7511->regmap,
 382                            ADV7511_REG_INT_ENABLE(1),
 383                            ADV7511_INT1_DDC_ERROR, 0);
 384         regcache_mark_dirty(adv7511->regmap);
 385 }
 386
 387 static void adv7511_power_off(struct adv7511 *adv7511)
 388 {
 389         __adv7511_power_off(adv7511);
 390         if (adv7511->type == ADV7533)
 391                 adv7533_dsi_power_off(adv7511);
 392         adv7511->powered = false;
 393 }
 394
 395 /* -----------------------------------------------------------------------------
 396  * Interrupt and hotplug detection
 397  */
 398
 399 static bool adv7511_hpd(struct adv7511 *adv7511)
 400 {
 401         unsigned int irq0;
 402         int ret;
 403
 404         ret = regmap_read(adv7511->regmap, ADV7511_REG_INT(0), &irq0);
 405         if (ret < 0)
 406                 return false;
 407
 408         if (irq0 & ADV7511_INT0_HPD) {
 409                 regmap_write(adv7511->regmap, ADV7511_REG_INT(0),
 410                              ADV7511_INT0_HPD);
 411                 return true;
 412         }
 413
 414         return false;
 415 }
 416
 417 static void adv7511_hpd_work(struct work_struct *work)
 418 {
 419         struct adv7511 *adv7511 = container_of(work, struct adv7511, hpd_work);
 420         enum drm_connector_status status;
 421         unsigned int val;
 422         int ret;
 423
 424         ret = regmap_read(adv7511->regmap, ADV7511_REG_STATUS, &val);
 425         if (ret < 0)
 426                 status = connector_status_disconnected;
 427         else if (val & ADV7511_STATUS_HPD)
 428                 status = connector_status_connected;
 429         else
 430                 status = connector_status_disconnected;
 431
 432         if (adv7511->connector.status != status) {
 433                 adv7511->connector.status = status;
 434                 if (status == connector_status_disconnected)
 435                         cec_phys_addr_invalidate(adv7511->cec_adap);
 436                 drm_kms_helper_hotplug_event(adv7511->connector.dev);
 437         }
 438 }
 439
 440 static int adv7511_irq_process(struct adv7511 *adv7511, bool process_hpd)
 441 {
 442         unsigned int irq0, irq1;
 443         int ret;
 444
 445         ret = regmap_read(adv7511->regmap, ADV7511_REG_INT(0), &irq0);
 446         if (ret < 0)
 447                 return ret;
 448
 449         ret = regmap_read(adv7511->regmap, ADV7511_REG_INT(1), &irq1);
 450         if (ret < 0)
 451                 return ret;
 452
 453         regmap_write(adv7511->regmap, ADV7511_REG_INT(0), irq0);
 454         regmap_write(adv7511->regmap, ADV7511_REG_INT(1), irq1);
 455
 456         if (process_hpd && irq0 & ADV7511_INT0_HPD && adv7511->bridge.encoder)
 457                 schedule_work(&adv7511->hpd_work);
 458
 459         if (irq0 & ADV7511_INT0_EDID_READY || irq1 & ADV7511_INT1_DDC_ERROR) {
 460                 adv7511->edid_read = true;
 461
 462                 if (adv7511->i2c_main->irq)
 463                         wake_up_all(&adv7511->wq);
 464         }
 465
 466 #ifdef CONFIG_DRM_I2C_ADV7511_CEC
 467         adv7511_cec_irq_process(adv7511, irq1);
 468 #endif
 469
 470         return 0;
 471 }
 472
 473 static irqreturn_t adv7511_irq_handler(int irq, void *devid)
 474 {
 475         struct adv7511 *adv7511 = devid;
 476         int ret;
 477
 478         ret = adv7511_irq_process(adv7511, true);
 479         return ret < 0 ? IRQ_NONE : IRQ_HANDLED;
 480 }
 481
 482 /* -----------------------------------------------------------------------------
 483  * EDID retrieval
 484  */
 485
 486 static int adv7511_wait_for_edid(struct adv7511 *adv7511, int timeout)
 487 {
 488         int ret;
 489
 490         if (adv7511->i2c_main->irq) {
 491                 ret = wait_event_interruptible_timeout(adv7511->wq,
 492                                 adv7511->edid_read, msecs_to_jiffies(timeout));
 493         } else {
 494                 for (; timeout > 0; timeout -= 25) {
 495                         ret = adv7511_irq_process(adv7511, false);
 496                         if (ret < 0)
 497                                 break;
 498
 499                         if (adv7511->edid_read)
 500                                 break;
 501
 502                         msleep(25);
 503                 }
 504         }
 505
 506         return adv7511->edid_read ? 0 : -EIO;
 507 }
 508
 509 static int adv7511_get_edid_block(void *data, u8 *buf, unsigned int block,
 510                                   size_t len)
 511 {
 512         struct adv7511 *adv7511 = data;
 513         struct i2c_msg xfer[2];
 514         uint8_t offset;
 515         unsigned int i;
 516         int ret;
 517
 518         if (len > 128)
 519                 return -EINVAL;
 520
 521         if (adv7511->current_edid_segment != block / 2) {
 522                 unsigned int status;
 523
 524                 ret = regmap_read(adv7511->regmap, ADV7511_REG_DDC_STATUS,
 525                                   &status);
 526                 if (ret < 0)
 527                         return ret;
 528
 529                 if (status != 2) {
 530                         adv7511->edid_read = false;
 531                         regmap_write(adv7511->regmap, ADV7511_REG_EDID_SEGMENT,
 532                                      block);
 533                         ret = adv7511_wait_for_edid(adv7511, 200);
 534                         if (ret < 0)
 535                                 return ret;
 536                 }
 537
 538                 /* Break this apart, hopefully more I2C controllers will
 539                  * support 64 byte transfers than 256 byte transfers
 540                  */
 541
 542                 xfer[0].addr = adv7511->i2c_edid->addr;
 543                 xfer[0].flags = 0;
 544                 xfer[0].len = 1;
 545                 xfer[0].buf = &offset;
 546                 xfer[1].addr = adv7511->i2c_edid->addr;
 547                 xfer[1].flags = I2C_M_RD;
 548                 xfer[1].len = 64;
 549                 xfer[1].buf = adv7511->edid_buf;
 550
 551                 offset = 0;
 552
 553                 for (i = 0; i < 4; ++i) {
 554                         ret = i2c_transfer(adv7511->i2c_edid->adapter, xfer,
 555                                            ARRAY_SIZE(xfer));
 556                         if (ret < 0)
 557                                 return ret;
 558                         else if (ret != 2)
 559                                 return -EIO;
 560
 561                         xfer[1].buf += 64;
 562                         offset += 64;
 563                 }
 564
 565                 adv7511->current_edid_segment = block / 2;
 566         }
 567
 568         if (block % 2 == 0)
 569                 memcpy(buf, adv7511->edid_buf, len);
 570         else
 571                 memcpy(buf, adv7511->edid_buf + 128, len);
 572
 573         return 0;
 574 }
 575
 576 /* -----------------------------------------------------------------------------
 577  * ADV75xx helpers
 578  */
 579
 580 static int adv7511_get_modes(struct adv7511 *adv7511,
 581                              struct drm_connector *connector)
 582 {
 583         struct edid *edid;
 584         unsigned int count;
 585
 586         /* Reading the EDID only works if the device is powered */
 587         if (!adv7511->powered) {
 588                 unsigned int edid_i2c_addr =
 589                                         (adv7511->i2c_main->addr << 1) + 4;
 590
 591                 __adv7511_power_on(adv7511);
 592
 593                 /* Reset the EDID_I2C_ADDR register as it might be cleared */
 594                 regmap_write(adv7511->regmap, ADV7511_REG_EDID_I2C_ADDR,
 595                              edid_i2c_addr);
 596         }
 597
 598         edid = drm_do_get_edid(connector, adv7511_get_edid_block, adv7511);
 599
 600         if (!adv7511->powered)
 601                 __adv7511_power_off(adv7511);
 602
 603
 604         drm_mode_connector_update_edid_property(connector, edid);
 605         count = drm_add_edid_modes(connector, edid);
 606
 607         adv7511_set_config_csc(adv7511, connector, adv7511->rgb,
 608                                drm_detect_hdmi_monitor(edid));
 609
 610         cec_s_phys_addr_from_edid(adv7511->cec_adap, edid);
 611
 612         kfree(edid);
 613
 614         return count;
 615 }
 616
 617 static enum drm_connector_status
 618 adv7511_detect(struct adv7511 *adv7511, struct drm_connector *connector)
 619 {
 620         enum drm_connector_status status;
 621         unsigned int val;
 622         bool hpd;
 623         int ret;
 624
 625         ret = regmap_read(adv7511->regmap, ADV7511_REG_STATUS, &val);
 626         if (ret < 0)
 627                 return connector_status_disconnected;
 628
 629         if (val & ADV7511_STATUS_HPD)
 630                 status = connector_status_connected;
 631         else
 632                 status = connector_status_disconnected;
 633
 634         hpd = adv7511_hpd(adv7511);
 635
 636         /* The chip resets itself when the cable is disconnected, so in case
 637          * there is a pending HPD interrupt and the cable is connected there was
 638          * at least one transition from disconnected to connected and the chip
 639          * has to be reinitialized. */
 640         if (status == connector_status_connected && hpd && adv7511->powered) {
 641                 regcache_mark_dirty(adv7511->regmap);
 642                 adv7511_power_on(adv7511);
 643                 adv7511_get_modes(adv7511, connector);
 644                 if (adv7511->status == connector_status_connected)
 645                         status = connector_status_disconnected;
 646         } else {
 647                 /* Renable HPD sensing */
 648                 regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2,
 649                                    ADV7511_REG_POWER2_HPD_SRC_MASK,
 650                                    ADV7511_REG_POWER2_HPD_SRC_BOTH);
 651         }
 652
 653         adv7511->status = status;
 654         return status;
 655 }
 656
 657 static int adv7511_mode_valid(struct adv7511 *adv7511,
 658                               struct drm_display_mode *mode)
 659 {
 660         if (mode->clock > 165000)
 661                 return MODE_CLOCK_HIGH;
 662
 663         return MODE_OK;
 664 }
 665
 666 static void adv7511_mode_set(struct adv7511 *adv7511,
 667                              struct drm_display_mode *mode,
 668                              struct drm_display_mode *adj_mode)
 669 {
 670         unsigned int low_refresh_rate;
 671         unsigned int hsync_polarity = 0;
 672         unsigned int vsync_polarity = 0;
 673
 674         if (adv7511->embedded_sync) {
 675                 unsigned int hsync_offset, hsync_len;
 676                 unsigned int vsync_offset, vsync_len;
 677
 678                 hsync_offset = adj_mode->crtc_hsync_start -
 679                                adj_mode->crtc_hdisplay;
 680                 vsync_offset = adj_mode->crtc_vsync_start -
 681                                adj_mode->crtc_vdisplay;
 682                 hsync_len = adj_mode->crtc_hsync_end -
 683                             adj_mode->crtc_hsync_start;
 684                 vsync_len = adj_mode->crtc_vsync_end -
 685                             adj_mode->crtc_vsync_start;
 686
 687                 /* The hardware vsync generator has a off-by-one bug */
 688                 vsync_offset += 1;
 689
 690                 regmap_write(adv7511->regmap, ADV7511_REG_HSYNC_PLACEMENT_MSB,
 691                              ((hsync_offset >> 10) & 0x7) << 5);
 692                 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(0),
 693                              (hsync_offset >> 2) & 0xff);
 694                 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(1),
 695                              ((hsync_offset & 0x3) << 6) |
 696                              ((hsync_len >> 4) & 0x3f));
 697                 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(2),
 698                              ((hsync_len & 0xf) << 4) |
 699                              ((vsync_offset >> 6) & 0xf));
 700                 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(3),
 701                              ((vsync_offset & 0x3f) << 2) |
 702                              ((vsync_len >> 8) & 0x3));
 703                 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(4),
 704                              vsync_len & 0xff);
 705
 706                 hsync_polarity = !(adj_mode->flags & DRM_MODE_FLAG_PHSYNC);
 707                 vsync_polarity = !(adj_mode->flags & DRM_MODE_FLAG_PVSYNC);
 708         } else {
 709                 enum adv7511_sync_polarity mode_hsync_polarity;
 710                 enum adv7511_sync_polarity mode_vsync_polarity;
 711
 712                 /**
 713                  * If the input signal is always low or always high we want to
 714                  * invert or let it passthrough depending on the polarity of the
 715                  * current mode.
 716                  **/
 717                 if (adj_mode->flags & DRM_MODE_FLAG_NHSYNC)
 718                         mode_hsync_polarity = ADV7511_SYNC_POLARITY_LOW;
 719                 else
 720                         mode_hsync_polarity = ADV7511_SYNC_POLARITY_HIGH;
 721
 722                 if (adj_mode->flags & DRM_MODE_FLAG_NVSYNC)
 723                         mode_vsync_polarity = ADV7511_SYNC_POLARITY_LOW;
 724                 else
 725                         mode_vsync_polarity = ADV7511_SYNC_POLARITY_HIGH;
 726
 727                 if (adv7511->hsync_polarity != mode_hsync_polarity &&
 728                     adv7511->hsync_polarity !=
 729                     ADV7511_SYNC_POLARITY_PASSTHROUGH)
 730                         hsync_polarity = 1;
 731
 732                 if (adv7511->vsync_polarity != mode_vsync_polarity &&
 733                     adv7511->vsync_polarity !=
 734                     ADV7511_SYNC_POLARITY_PASSTHROUGH)
 735                         vsync_polarity = 1;
 736         }
 737
 738         if (mode->vrefresh <= 24000)
 739                 low_refresh_rate = ADV7511_LOW_REFRESH_RATE_24HZ;
 740         else if (mode->vrefresh <= 25000)
 741                 low_refresh_rate = ADV7511_LOW_REFRESH_RATE_25HZ;
 742         else if (mode->vrefresh <= 30000)
 743                 low_refresh_rate = ADV7511_LOW_REFRESH_RATE_30HZ;
 744         else
 745                 low_refresh_rate = ADV7511_LOW_REFRESH_RATE_NONE;
 746
 747         regmap_update_bits(adv7511->regmap, 0xfb,
 748                 0x6, low_refresh_rate << 1);
 749         regmap_update_bits(adv7511->regmap, 0x17,
 750                 0x60, (vsync_polarity << 6) | (hsync_polarity << 5));
 751
 752         if (adv7511->type == ADV7533)
 753                 adv7533_mode_set(adv7511, adj_mode);
 754
 755         drm_mode_copy(&adv7511->curr_mode, adj_mode);
 756
 757         /*
 758          * TODO Test first order 4:2:2 to 4:4:4 up conversion method, which is
 759          * supposed to give better results.
 760          */
 761
 762         adv7511->f_tmds = mode->clock;
 763 }
 764
 765 /* Connector funcs */
 766 static struct adv7511 *connector_to_adv7511(struct drm_connector *connector)
 767 {
 768         return container_of(connector, struct adv7511, connector);
 769 }
 770
 771 static int adv7511_connector_get_modes(struct drm_connector *connector)
 772 {
 773         struct adv7511 *adv = connector_to_adv7511(connector);
 774
 775         return adv7511_get_modes(adv, connector);
 776 }
 777
 778 static enum drm_mode_status
 779 adv7511_connector_mode_valid(struct drm_connector *connector,
 780                              struct drm_display_mode *mode)
 781 {
 782         struct adv7511 *adv = connector_to_adv7511(connector);
 783
 784         return adv7511_mode_valid(adv, mode);
 785 }
 786
 787 static struct drm_connector_helper_funcs adv7511_connector_helper_funcs = {
 788         .get_modes = adv7511_connector_get_modes,
 789         .mode_valid = adv7511_connector_mode_valid,
 790 };
 791
 792 static enum drm_connector_status
 793 adv7511_connector_detect(struct drm_connector *connector, bool force)
 794 {
 795         struct adv7511 *adv = connector_to_adv7511(connector);
 796
 797         return adv7511_detect(adv, connector);
 798 }
 799
 800 static const struct drm_connector_funcs adv7511_connector_funcs = {
 801         .fill_modes = drm_helper_probe_single_connector_modes,
 802         .detect = adv7511_connector_detect,
 803         .destroy = drm_connector_cleanup,
 804         .reset = drm_atomic_helper_connector_reset,
 805         .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
 806         .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
 807 };
 808
 809 /* Bridge funcs */
 810 static struct adv7511 *bridge_to_adv7511(struct drm_bridge *bridge)
 811 {
 812         return container_of(bridge, struct adv7511, bridge);
 813 }
 814
 815 static void adv7511_bridge_enable(struct drm_bridge *bridge)
 816 {
 817         struct adv7511 *adv = bridge_to_adv7511(bridge);
 818
 819         adv7511_power_on(adv);
 820 }
 821
 822 static void adv7511_bridge_disable(struct drm_bridge *bridge)
 823 {
 824         struct adv7511 *adv = bridge_to_adv7511(bridge);
 825
 826         adv7511_power_off(adv);
 827 }
 828
 829 static void adv7511_bridge_mode_set(struct drm_bridge *bridge,
 830                                     struct drm_display_mode *mode,
 831                                     struct drm_display_mode *adj_mode)
 832 {
 833         struct adv7511 *adv = bridge_to_adv7511(bridge);
 834
 835         adv7511_mode_set(adv, mode, adj_mode);
 836 }
 837
 838 static int adv7511_bridge_attach(struct drm_bridge *bridge)
 839 {
 840         struct adv7511 *adv = bridge_to_adv7511(bridge);
 841         int ret;
 842
 843         if (!bridge->encoder) {
 844                 DRM_ERROR("Parent encoder object not found");
 845                 return -ENODEV;
 846         }
 847
 848         if (adv->i2c_main->irq)
 849                 adv->connector.polled = DRM_CONNECTOR_POLL_HPD;
 850         else
 851                 adv->connector.polled = DRM_CONNECTOR_POLL_CONNECT |
 852                                 DRM_CONNECTOR_POLL_DISCONNECT;
 853
 854         ret = drm_connector_init(bridge->dev, &adv->connector,
 855                                  &adv7511_connector_funcs,
 856                                  DRM_MODE_CONNECTOR_HDMIA);
 857         if (ret) {
 858                 DRM_ERROR("Failed to initialize connector with drm\n");
 859                 return ret;
 860         }
 861         drm_connector_helper_add(&adv->connector,
 862                                  &adv7511_connector_helper_funcs);
 863         drm_mode_connector_attach_encoder(&adv->connector, bridge->encoder);
 864
 865         if (adv->type == ADV7533)
 866                 ret = adv7533_attach_dsi(adv);
 867
 868         if (adv->i2c_main->irq)
 869                 regmap_write(adv->regmap, ADV7511_REG_INT_ENABLE(0),
 870                              ADV7511_INT0_HPD);
 871
 872         return ret;
 873 }
 874
 875 static const struct drm_bridge_funcs adv7511_bridge_funcs = {
 876         .enable = adv7511_bridge_enable,
 877         .disable = adv7511_bridge_disable,
 878         .mode_set = adv7511_bridge_mode_set,
 879         .attach = adv7511_bridge_attach,
 880 };
 881
 882 /* -----------------------------------------------------------------------------
 883  * Probe & remove
 884  */
 885
 886 static const char * const adv7511_supply_names[] = {
 887         "avdd",
 888         "dvdd",
 889         "pvdd",
 890         "bgvdd",
 891         "dvdd-3v",
 892 };
 893
 894 static const char * const adv7533_supply_names[] = {
 895         "avdd",
 896         "dvdd",
 897         "pvdd",
 898         "a2vdd",
 899         "v3p3",
 900         "v1p2",
 901 };
 902
 903 static int adv7511_init_regulators(struct adv7511 *adv)
 904 {
 905         struct device *dev = &adv->i2c_main->dev;
 906         const char * const *supply_names;
 907         unsigned int i;
 908         int ret;
 909
 910         if (adv->type == ADV7511) {
 911                 supply_names = adv7511_supply_names;
 912                 adv->num_supplies = ARRAY_SIZE(adv7511_supply_names);
 913         } else {
 914                 supply_names = adv7533_supply_names;
 915                 adv->num_supplies = ARRAY_SIZE(adv7533_supply_names);
 916         }
 917
 918         adv->supplies = devm_kcalloc(dev, adv->num_supplies,
 919                                      sizeof(*adv->supplies), GFP_KERNEL);
 920         if (!adv->supplies)
 921                 return -ENOMEM;
 922
 923         for (i = 0; i < adv->num_supplies; i++)
 924                 adv->supplies[i].supply = supply_names[i];
 925
 926         ret = devm_regulator_bulk_get(dev, adv->num_supplies, adv->supplies);
 927         if (ret)
 928                 return ret;
 929
 930         return regulator_bulk_enable(adv->num_supplies, adv->supplies);
 931 }
 932
 933 static void adv7511_uninit_regulators(struct adv7511 *adv)
 934 {
 935         regulator_bulk_disable(adv->num_supplies, adv->supplies);
 936 }
 937
 938 static bool adv7511_cec_register_volatile(struct device *dev, unsigned int reg)
 939 {
 940         struct i2c_client *i2c = to_i2c_client(dev);
 941         struct adv7511 *adv7511 = i2c_get_clientdata(i2c);
 942
 943         if (adv7511->type == ADV7533)
 944                 reg -= ADV7533_REG_CEC_OFFSET;
 945
 946         switch (reg) {
 947         case ADV7511_REG_CEC_RX_FRAME_HDR:
 948         case ADV7511_REG_CEC_RX_FRAME_DATA0...
 949                 ADV7511_REG_CEC_RX_FRAME_DATA0 + 14:
 950         case ADV7511_REG_CEC_RX_FRAME_LEN:
 951         case ADV7511_REG_CEC_RX_BUFFERS:
 952         case ADV7511_REG_CEC_TX_LOW_DRV_CNT:
 953                 return true;
 954         }
 955
 956         return false;
 957 }
 958
 959 static const struct regmap_config adv7511_cec_regmap_config = {
 960         .reg_bits = 8,
 961         .val_bits = 8,
 962
 963         .max_register = 0xff,
 964         .cache_type = REGCACHE_RBTREE,
 965         .volatile_reg = adv7511_cec_register_volatile,
 966 };
 967
 968 static int adv7511_init_cec_regmap(struct adv7511 *adv)
 969 {
 970         int ret;
 971
 972         adv->i2c_cec = i2c_new_dummy(adv->i2c_main->adapter,
 973                                      adv->i2c_main->addr - 1);
 974         if (!adv->i2c_cec)
 975                 return -ENOMEM;
 976         i2c_set_clientdata(adv->i2c_cec, adv);
 977
 978         adv->regmap_cec = devm_regmap_init_i2c(adv->i2c_cec,
 979                                         &adv7511_cec_regmap_config);
 980         if (IS_ERR(adv->regmap_cec)) {
 981                 ret = PTR_ERR(adv->regmap_cec);
 982                 goto err;
 983         }
 984
 985         if (adv->type == ADV7533) {
 986                 ret = adv7533_patch_cec_registers(adv);
 987                 if (ret)
 988                         goto err;
 989         }
 990
 991         return 0;
 992 err:
 993         i2c_unregister_device(adv->i2c_cec);
 994         return ret;
 995 }
 996
 997 static int adv7511_parse_dt(struct device_node *np,
 998                             struct adv7511_link_config *config)
 999 {
1000         const char *str;
1001         int ret;
1002
1003         of_property_read_u32(np, "adi,input-depth", &config->input_color_depth);
1004         if (config->input_color_depth != 8 && config->input_color_depth != 10 &&
1005             config->input_color_depth != 12)
1006                 return -EINVAL;
1007
1008         ret = of_property_read_string(np, "adi,input-colorspace", &str);
1009         if (ret < 0)
1010                 return ret;
1011
1012         if (!strcmp(str, "rgb"))
1013                 config->input_colorspace = HDMI_COLORSPACE_RGB;
1014         else if (!strcmp(str, "yuv422"))
1015                 config->input_colorspace = HDMI_COLORSPACE_YUV422;
1016         else if (!strcmp(str, "yuv444"))
1017                 config->input_colorspace = HDMI_COLORSPACE_YUV444;
1018         else
1019                 return -EINVAL;
1020
1021         ret = of_property_read_string(np, "adi,input-clock", &str);
1022         if (ret < 0)
1023                 return ret;
1024
1025         if (!strcmp(str, "1x"))
1026                 config->input_clock = ADV7511_INPUT_CLOCK_1X;
1027         else if (!strcmp(str, "2x"))
1028                 config->input_clock = ADV7511_INPUT_CLOCK_2X;
1029         else if (!strcmp(str, "ddr"))
1030                 config->input_clock = ADV7511_INPUT_CLOCK_DDR;
1031         else
1032                 return -EINVAL;
1033
1034         if (config->input_colorspace == HDMI_COLORSPACE_YUV422 ||
1035             config->input_clock != ADV7511_INPUT_CLOCK_1X) {
1036                 ret = of_property_read_u32(np, "adi,input-style",
1037                                            &config->input_style);
1038                 if (ret)
1039                         return ret;
1040
1041                 if (config->input_style < 1 || config->input_style > 3)
1042                         return -EINVAL;
1043
1044                 ret = of_property_read_string(np, "adi,input-justification",
1045                                               &str);
1046                 if (ret < 0)
1047                         return ret;
1048
1049                 if (!strcmp(str, "left"))
1050                         config->input_justification =
1051                                 ADV7511_INPUT_JUSTIFICATION_LEFT;
1052                 else if (!strcmp(str, "evenly"))
1053                         config->input_justification =
1054                                 ADV7511_INPUT_JUSTIFICATION_EVENLY;
1055                 else if (!strcmp(str, "right"))
1056                         config->input_justification =
1057                                 ADV7511_INPUT_JUSTIFICATION_RIGHT;
1058                 else
1059                         return -EINVAL;
1060
1061         } else {
1062                 config->input_style = 1;
1063                 config->input_justification = ADV7511_INPUT_JUSTIFICATION_LEFT;
1064         }
1065
1066         of_property_read_u32(np, "adi,clock-delay", &config->clock_delay);
1067         if (config->clock_delay < -1200 || config->clock_delay > 1600)
1068                 return -EINVAL;
1069
1070         config->embedded_sync = of_property_read_bool(np, "adi,embedded-sync");
1071
1072         /* Hardcode the sync pulse configurations for now. */
1073         config->sync_pulse = ADV7511_INPUT_SYNC_PULSE_NONE;
1074         config->vsync_polarity = ADV7511_SYNC_POLARITY_PASSTHROUGH;
1075         config->hsync_polarity = ADV7511_SYNC_POLARITY_PASSTHROUGH;
1076
1077         return 0;
1078 }
1079
1080 static int adv7511_probe(struct i2c_client *i2c, const struct i2c_device_id *id)
1081 {
1082         struct adv7511_link_config link_config;
1083         struct adv7511 *adv7511;
1084         struct device *dev = &i2c->dev;
1085         unsigned int main_i2c_addr = i2c->addr << 1;
1086         unsigned int edid_i2c_addr = main_i2c_addr + 4;
1087         unsigned int val;
1088         int ret;
1089
1090         if (!dev->of_node)
1091                 return -EINVAL;
1092
1093         adv7511 = devm_kzalloc(dev, sizeof(*adv7511), GFP_KERNEL);
1094         if (!adv7511)
1095                 return -ENOMEM;
1096
1097         adv7511->i2c_main = i2c;
1098         adv7511->powered = false;
1099         adv7511->status = connector_status_disconnected;
1100
1101         if (dev->of_node)
1102                 adv7511->type = (enum adv7511_type)of_device_get_match_data(dev);
1103         else
1104                 adv7511->type = id->driver_data;
1105
1106         memset(&link_config, 0, sizeof(link_config));
1107
1108         if (adv7511->type == ADV7511)
1109                 ret = adv7511_parse_dt(dev->of_node, &link_config);
1110         else
1111                 ret = adv7533_parse_dt(dev->of_node, adv7511);
1112         if (ret)
1113                 return ret;
1114
1115         ret = adv7511_init_regulators(adv7511);
1116         if (ret) {
1117                 dev_err(dev, "failed to init regulators\n");
1118                 return ret;
1119         }
1120
1121         /*
1122          * The power down GPIO is optional. If present, toggle it from active to
1123          * inactive to wake up the encoder.
1124          */
1125         adv7511->gpio_pd = devm_gpiod_get_optional(dev, "pd", GPIOD_OUT_HIGH);
1126         if (IS_ERR(adv7511->gpio_pd)) {
1127                 ret = PTR_ERR(adv7511->gpio_pd);
1128                 goto uninit_regulators;
1129         }
1130
1131         if (adv7511->gpio_pd) {
1132                 mdelay(5);
1133                 gpiod_set_value_cansleep(adv7511->gpio_pd, 0);
1134         }
1135
1136         adv7511->regmap = devm_regmap_init_i2c(i2c, &adv7511_regmap_config);
1137         if (IS_ERR(adv7511->regmap)) {
1138                 ret = PTR_ERR(adv7511->regmap);
1139                 goto uninit_regulators;
1140         }
1141
1142         ret = regmap_read(adv7511->regmap, ADV7511_REG_CHIP_REVISION, &val);
1143         if (ret)
1144                 goto uninit_regulators;
1145         dev_dbg(dev, "Rev. %d\n", val);
1146
1147         if (adv7511->type == ADV7511)
1148                 ret = regmap_register_patch(adv7511->regmap,
1149                                             adv7511_fixed_registers,
1150                                             ARRAY_SIZE(adv7511_fixed_registers));
1151         else
1152                 ret = adv7533_patch_registers(adv7511);
1153         if (ret)
1154                 goto uninit_regulators;
1155
1156         regmap_write(adv7511->regmap, ADV7511_REG_EDID_I2C_ADDR, edid_i2c_addr);
1157         regmap_write(adv7511->regmap, ADV7511_REG_PACKET_I2C_ADDR,
1158                      main_i2c_addr - 0xa);
1159         regmap_write(adv7511->regmap, ADV7511_REG_CEC_I2C_ADDR,
1160                      main_i2c_addr - 2);
1161
1162         adv7511_packet_disable(adv7511, 0xffff);
1163
1164         adv7511->i2c_edid = i2c_new_dummy(i2c->adapter, edid_i2c_addr >> 1);
1165         if (!adv7511->i2c_edid) {
1166                 ret = -ENOMEM;
1167                 goto uninit_regulators;
1168         }
1169
1170         ret = adv7511_init_cec_regmap(adv7511);
1171         if (ret)
1172                 goto err_i2c_unregister_edid;
1173
1174         INIT_WORK(&adv7511->hpd_work, adv7511_hpd_work);
1175
1176         if (i2c->irq) {
1177                 init_waitqueue_head(&adv7511->wq);
1178
1179                 ret = devm_request_threaded_irq(dev, i2c->irq, NULL,
1180                                                 adv7511_irq_handler,
1181                                                 IRQF_ONESHOT, dev_name(dev),
1182                                                 adv7511);
1183                 if (ret)
1184                         goto err_unregister_cec;
1185         }
1186
1187         adv7511_power_off(adv7511);
1188
1189         i2c_set_clientdata(i2c, adv7511);
1190
1191         if (adv7511->type == ADV7511)
1192                 adv7511_set_link_config(adv7511, &link_config);
1193
1194         ret = adv7511_cec_init(dev, adv7511);
1195         if (ret)
1196                 goto err_unregister_cec;
1197
1198         adv7511->bridge.funcs = &adv7511_bridge_funcs;
1199         adv7511->bridge.of_node = dev->of_node;
1200
1201         drm_bridge_add(&adv7511->bridge);
1202
1203         adv7511_audio_init(dev, adv7511);
1204         return 0;
1205
1206 err_unregister_cec:
1207         i2c_unregister_device(adv7511->i2c_cec);
1208         if (adv7511->cec_clk)
1209                 clk_disable_unprepare(adv7511->cec_clk);
1210 err_i2c_unregister_edid:
1211         i2c_unregister_device(adv7511->i2c_edid);
1212 uninit_regulators:
1213         adv7511_uninit_regulators(adv7511);
1214
1215         return ret;
1216 }
1217
1218 static int adv7511_remove(struct i2c_client *i2c)
1219 {
1220         struct adv7511 *adv7511 = i2c_get_clientdata(i2c);
1221
1222         if (adv7511->type == ADV7533)
1223                 adv7533_detach_dsi(adv7511);
1224         i2c_unregister_device(adv7511->i2c_cec);
1225         if (adv7511->cec_clk)
1226                 clk_disable_unprepare(adv7511->cec_clk);
1227
1228         adv7511_uninit_regulators(adv7511);
1229
1230         drm_bridge_remove(&adv7511->bridge);
1231
1232         adv7511_audio_exit(adv7511);
1233
1234         cec_unregister_adapter(adv7511->cec_adap);
1235
1236         i2c_unregister_device(adv7511->i2c_edid);
1237
1238         return 0;
1239 }
1240
1241 static const struct i2c_device_id adv7511_i2c_ids[] = {
1242         { "adv7511", ADV7511 },
1243         { "adv7511w", ADV7511 },
1244         { "adv7513", ADV7511 },
1245 #ifdef CONFIG_DRM_I2C_ADV7533
1246         { "adv7533", ADV7533 },
1247 #endif
1248         { }
1249 };
1250 MODULE_DEVICE_TABLE(i2c, adv7511_i2c_ids);
1251
1252 static const struct of_device_id adv7511_of_ids[] = {
1253         { .compatible = "adi,adv7511", .data = (void *)ADV7511 },
1254         { .compatible = "adi,adv7511w", .data = (void *)ADV7511 },
1255         { .compatible = "adi,adv7513", .data = (void *)ADV7511 },
1256 #ifdef CONFIG_DRM_I2C_ADV7533
1257         { .compatible = "adi,adv7533", .data = (void *)ADV7533 },
1258 #endif
1259         { }
1260 };
1261 MODULE_DEVICE_TABLE(of, adv7511_of_ids);
1262
1263 static struct mipi_dsi_driver adv7533_dsi_driver = {
1264         .driver.name = "adv7533",
1265 };
1266
1267 static struct i2c_driver adv7511_driver = {
1268         .driver = {
1269                 .name = "adv7511",
1270                 .of_match_table = adv7511_of_ids,
1271         },
1272         .id_table = adv7511_i2c_ids,
1273         .probe = adv7511_probe,
1274         .remove = adv7511_remove,
1275 };
1276
1277 static int __init adv7511_init(void)
1278 {
1279         if (IS_ENABLED(CONFIG_DRM_MIPI_DSI))
1280                 mipi_dsi_driver_register(&adv7533_dsi_driver);
1281
1282         return i2c_add_driver(&adv7511_driver);
1283 }
1284 module_init(adv7511_init);
1285
1286 static void __exit adv7511_exit(void)
1287 {
1288         i2c_del_driver(&adv7511_driver);
1289
1290         if (IS_ENABLED(CONFIG_DRM_MIPI_DSI))
1291                 mipi_dsi_driver_unregister(&adv7533_dsi_driver);
1292 }
1293 module_exit(adv7511_exit);
1294
1295 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
1296 MODULE_DESCRIPTION("ADV7511 HDMI transmitter driver");
1297 MODULE_LICENSE("GPL");