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

   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_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 || adv7511->type == ADV7535)
 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 || adv7511->type == ADV7535)
 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         /*
 433          * The bridge resets its registers on unplug. So when we get a plug
 434          * event and we're already supposed to be powered, cycle the bridge to
 435          * restore its state.
 436          */
 437         if (status == connector_status_connected &&
 438             adv7511->connector.status == connector_status_disconnected &&
 439             adv7511->powered) {
 440                 regcache_mark_dirty(adv7511->regmap);
 441                 adv7511_power_on(adv7511);
 442         }
 443
 444         if (adv7511->connector.status != status) {
 445                 adv7511->connector.status = status;
 446
 447                 if (adv7511->connector.dev) {
 448                         if (status == connector_status_disconnected)
 449                                 cec_phys_addr_invalidate(adv7511->cec_adap);
 450                         drm_kms_helper_hotplug_event(adv7511->connector.dev);
 451                 } else {
 452                         drm_bridge_hpd_notify(&adv7511->bridge, status);
 453                 }
 454         }
 455 }
 456
 457 static int adv7511_irq_process(struct adv7511 *adv7511, bool process_hpd)
 458 {
 459         unsigned int irq0, irq1;
 460         int ret;
 461
 462         ret = regmap_read(adv7511->regmap, ADV7511_REG_INT(0), &irq0);
 463         if (ret < 0)
 464                 return ret;
 465
 466         ret = regmap_read(adv7511->regmap, ADV7511_REG_INT(1), &irq1);
 467         if (ret < 0)
 468                 return ret;
 469
 470         regmap_write(adv7511->regmap, ADV7511_REG_INT(0), irq0);
 471         regmap_write(adv7511->regmap, ADV7511_REG_INT(1), irq1);
 472
 473         if (process_hpd && irq0 & ADV7511_INT0_HPD && adv7511->bridge.encoder)
 474                 schedule_work(&adv7511->hpd_work);
 475
 476         if (irq0 & ADV7511_INT0_EDID_READY || irq1 & ADV7511_INT1_DDC_ERROR) {
 477                 adv7511->edid_read = true;
 478
 479                 if (adv7511->i2c_main->irq)
 480                         wake_up_all(&adv7511->wq);
 481         }
 482
 483 #ifdef CONFIG_DRM_I2C_ADV7511_CEC
 484         adv7511_cec_irq_process(adv7511, irq1);
 485 #endif
 486
 487         return 0;
 488 }
 489
 490 static irqreturn_t adv7511_irq_handler(int irq, void *devid)
 491 {
 492         struct adv7511 *adv7511 = devid;
 493         int ret;
 494
 495         ret = adv7511_irq_process(adv7511, true);
 496         return ret < 0 ? IRQ_NONE : IRQ_HANDLED;
 497 }
 498
 499 /* -----------------------------------------------------------------------------
 500  * EDID retrieval
 501  */
 502
 503 static int adv7511_wait_for_edid(struct adv7511 *adv7511, int timeout)
 504 {
 505         int ret;
 506
 507         if (adv7511->i2c_main->irq) {
 508                 ret = wait_event_interruptible_timeout(adv7511->wq,
 509                                 adv7511->edid_read, msecs_to_jiffies(timeout));
 510         } else {
 511                 for (; timeout > 0; timeout -= 25) {
 512                         ret = adv7511_irq_process(adv7511, false);
 513                         if (ret < 0)
 514                                 break;
 515
 516                         if (adv7511->edid_read)
 517                                 break;
 518
 519                         msleep(25);
 520                 }
 521         }
 522
 523         return adv7511->edid_read ? 0 : -EIO;
 524 }
 525
 526 static int adv7511_get_edid_block(void *data, u8 *buf, unsigned int block,
 527                                   size_t len)
 528 {
 529         struct adv7511 *adv7511 = data;
 530         struct i2c_msg xfer[2];
 531         uint8_t offset;
 532         unsigned int i;
 533         int ret;
 534
 535         if (len > 128)
 536                 return -EINVAL;
 537
 538         if (adv7511->current_edid_segment != block / 2) {
 539                 unsigned int status;
 540
 541                 ret = regmap_read(adv7511->regmap, ADV7511_REG_DDC_STATUS,
 542                                   &status);
 543                 if (ret < 0)
 544                         return ret;
 545
 546                 if (status != 2) {
 547                         adv7511->edid_read = false;
 548                         regmap_write(adv7511->regmap, ADV7511_REG_EDID_SEGMENT,
 549                                      block);
 550                         ret = adv7511_wait_for_edid(adv7511, 200);
 551                         if (ret < 0)
 552                                 return ret;
 553                 }
 554
 555                 /* Break this apart, hopefully more I2C controllers will
 556                  * support 64 byte transfers than 256 byte transfers
 557                  */
 558
 559                 xfer[0].addr = adv7511->i2c_edid->addr;
 560                 xfer[0].flags = 0;
 561                 xfer[0].len = 1;
 562                 xfer[0].buf = &offset;
 563                 xfer[1].addr = adv7511->i2c_edid->addr;
 564                 xfer[1].flags = I2C_M_RD;
 565                 xfer[1].len = 64;
 566                 xfer[1].buf = adv7511->edid_buf;
 567
 568                 offset = 0;
 569
 570                 for (i = 0; i < 4; ++i) {
 571                         ret = i2c_transfer(adv7511->i2c_edid->adapter, xfer,
 572                                            ARRAY_SIZE(xfer));
 573                         if (ret < 0)
 574                                 return ret;
 575                         else if (ret != 2)
 576                                 return -EIO;
 577
 578                         xfer[1].buf += 64;
 579                         offset += 64;
 580                 }
 581
 582                 adv7511->current_edid_segment = block / 2;
 583         }
 584
 585         if (block % 2 == 0)
 586                 memcpy(buf, adv7511->edid_buf, len);
 587         else
 588                 memcpy(buf, adv7511->edid_buf + 128, len);
 589
 590         return 0;
 591 }
 592
 593 /* -----------------------------------------------------------------------------
 594  * ADV75xx helpers
 595  */
 596
 597 static struct edid *adv7511_get_edid(struct adv7511 *adv7511,
 598                                      struct drm_connector *connector)
 599 {
 600         struct edid *edid;
 601
 602         /* Reading the EDID only works if the device is powered */
 603         if (!adv7511->powered) {
 604                 unsigned int edid_i2c_addr =
 605                                         (adv7511->i2c_edid->addr << 1);
 606
 607                 __adv7511_power_on(adv7511);
 608
 609                 /* Reset the EDID_I2C_ADDR register as it might be cleared */
 610                 regmap_write(adv7511->regmap, ADV7511_REG_EDID_I2C_ADDR,
 611                              edid_i2c_addr);
 612         }
 613
 614         edid = drm_do_get_edid(connector, adv7511_get_edid_block, adv7511);
 615
 616         if (!adv7511->powered)
 617                 __adv7511_power_off(adv7511);
 618
 619         adv7511_set_config_csc(adv7511, connector, adv7511->rgb,
 620                                drm_detect_hdmi_monitor(edid));
 621
 622         cec_s_phys_addr_from_edid(adv7511->cec_adap, edid);
 623
 624         return edid;
 625 }
 626
 627 static int adv7511_get_modes(struct adv7511 *adv7511,
 628                              struct drm_connector *connector)
 629 {
 630         struct edid *edid;
 631         unsigned int count;
 632
 633         edid = adv7511_get_edid(adv7511, connector);
 634
 635         drm_connector_update_edid_property(connector, edid);
 636         count = drm_add_edid_modes(connector, edid);
 637
 638         kfree(edid);
 639
 640         return count;
 641 }
 642
 643 static enum drm_connector_status
 644 adv7511_detect(struct adv7511 *adv7511, struct drm_connector *connector)
 645 {
 646         enum drm_connector_status status;
 647         unsigned int val;
 648         bool hpd;
 649         int ret;
 650
 651         ret = regmap_read(adv7511->regmap, ADV7511_REG_STATUS, &val);
 652         if (ret < 0)
 653                 return connector_status_disconnected;
 654
 655         if (val & ADV7511_STATUS_HPD)
 656                 status = connector_status_connected;
 657         else
 658                 status = connector_status_disconnected;
 659
 660         hpd = adv7511_hpd(adv7511);
 661
 662         /* The chip resets itself when the cable is disconnected, so in case
 663          * there is a pending HPD interrupt and the cable is connected there was
 664          * at least one transition from disconnected to connected and the chip
 665          * has to be reinitialized. */
 666         if (status == connector_status_connected && hpd && adv7511->powered) {
 667                 regcache_mark_dirty(adv7511->regmap);
 668                 adv7511_power_on(adv7511);
 669                 if (connector)
 670                         adv7511_get_modes(adv7511, connector);
 671                 if (adv7511->status == connector_status_connected)
 672                         status = connector_status_disconnected;
 673         } else {
 674                 /* Renable HPD sensing */
 675                 regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2,
 676                                    ADV7511_REG_POWER2_HPD_SRC_MASK,
 677                                    ADV7511_REG_POWER2_HPD_SRC_BOTH);
 678         }
 679
 680         adv7511->status = status;
 681         return status;
 682 }
 683
 684 static enum drm_mode_status adv7511_mode_valid(struct adv7511 *adv7511,
 685                               struct drm_display_mode *mode)
 686 {
 687         if (mode->clock > 165000)
 688                 return MODE_CLOCK_HIGH;
 689
 690         return MODE_OK;
 691 }
 692
 693 static void adv7511_mode_set(struct adv7511 *adv7511,
 694                              const struct drm_display_mode *mode,
 695                              const struct drm_display_mode *adj_mode)
 696 {
 697         unsigned int low_refresh_rate;
 698         unsigned int hsync_polarity = 0;
 699         unsigned int vsync_polarity = 0;
 700
 701         if (adv7511->embedded_sync) {
 702                 unsigned int hsync_offset, hsync_len;
 703                 unsigned int vsync_offset, vsync_len;
 704
 705                 hsync_offset = adj_mode->crtc_hsync_start -
 706                                adj_mode->crtc_hdisplay;
 707                 vsync_offset = adj_mode->crtc_vsync_start -
 708                                adj_mode->crtc_vdisplay;
 709                 hsync_len = adj_mode->crtc_hsync_end -
 710                             adj_mode->crtc_hsync_start;
 711                 vsync_len = adj_mode->crtc_vsync_end -
 712                             adj_mode->crtc_vsync_start;
 713
 714                 /* The hardware vsync generator has a off-by-one bug */
 715                 vsync_offset += 1;
 716
 717                 regmap_write(adv7511->regmap, ADV7511_REG_HSYNC_PLACEMENT_MSB,
 718                              ((hsync_offset >> 10) & 0x7) << 5);
 719                 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(0),
 720                              (hsync_offset >> 2) & 0xff);
 721                 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(1),
 722                              ((hsync_offset & 0x3) << 6) |
 723                              ((hsync_len >> 4) & 0x3f));
 724                 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(2),
 725                              ((hsync_len & 0xf) << 4) |
 726                              ((vsync_offset >> 6) & 0xf));
 727                 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(3),
 728                              ((vsync_offset & 0x3f) << 2) |
 729                              ((vsync_len >> 8) & 0x3));
 730                 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(4),
 731                              vsync_len & 0xff);
 732
 733                 hsync_polarity = !(adj_mode->flags & DRM_MODE_FLAG_PHSYNC);
 734                 vsync_polarity = !(adj_mode->flags & DRM_MODE_FLAG_PVSYNC);
 735         } else {
 736                 enum adv7511_sync_polarity mode_hsync_polarity;
 737                 enum adv7511_sync_polarity mode_vsync_polarity;
 738
 739                 /**
 740                  * If the input signal is always low or always high we want to
 741                  * invert or let it passthrough depending on the polarity of the
 742                  * current mode.
 743                  **/
 744                 if (adj_mode->flags & DRM_MODE_FLAG_NHSYNC)
 745                         mode_hsync_polarity = ADV7511_SYNC_POLARITY_LOW;
 746                 else
 747                         mode_hsync_polarity = ADV7511_SYNC_POLARITY_HIGH;
 748
 749                 if (adj_mode->flags & DRM_MODE_FLAG_NVSYNC)
 750                         mode_vsync_polarity = ADV7511_SYNC_POLARITY_LOW;
 751                 else
 752                         mode_vsync_polarity = ADV7511_SYNC_POLARITY_HIGH;
 753
 754                 if (adv7511->hsync_polarity != mode_hsync_polarity &&
 755                     adv7511->hsync_polarity !=
 756                     ADV7511_SYNC_POLARITY_PASSTHROUGH)
 757                         hsync_polarity = 1;
 758
 759                 if (adv7511->vsync_polarity != mode_vsync_polarity &&
 760                     adv7511->vsync_polarity !=
 761                     ADV7511_SYNC_POLARITY_PASSTHROUGH)
 762                         vsync_polarity = 1;
 763         }
 764
 765         if (drm_mode_vrefresh(mode) <= 24)
 766                 low_refresh_rate = ADV7511_LOW_REFRESH_RATE_24HZ;
 767         else if (drm_mode_vrefresh(mode) <= 25)
 768                 low_refresh_rate = ADV7511_LOW_REFRESH_RATE_25HZ;
 769         else if (drm_mode_vrefresh(mode) <= 30)
 770                 low_refresh_rate = ADV7511_LOW_REFRESH_RATE_30HZ;
 771         else
 772                 low_refresh_rate = ADV7511_LOW_REFRESH_RATE_NONE;
 773
 774         regmap_update_bits(adv7511->regmap, 0xfb,
 775                 0x6, low_refresh_rate << 1);
 776         regmap_update_bits(adv7511->regmap, 0x17,
 777                 0x60, (vsync_polarity << 6) | (hsync_polarity << 5));
 778
 779         if (adv7511->type == ADV7533 || adv7511->type == ADV7535)
 780                 adv7533_mode_set(adv7511, adj_mode);
 781
 782         drm_mode_copy(&adv7511->curr_mode, adj_mode);
 783
 784         /*
 785          * TODO Test first order 4:2:2 to 4:4:4 up conversion method, which is
 786          * supposed to give better results.
 787          */
 788
 789         adv7511->f_tmds = mode->clock;
 790 }
 791
 792 /* -----------------------------------------------------------------------------
 793  * DRM Connector Operations
 794  */
 795
 796 static struct adv7511 *connector_to_adv7511(struct drm_connector *connector)
 797 {
 798         return container_of(connector, struct adv7511, connector);
 799 }
 800
 801 static int adv7511_connector_get_modes(struct drm_connector *connector)
 802 {
 803         struct adv7511 *adv = connector_to_adv7511(connector);
 804
 805         return adv7511_get_modes(adv, connector);
 806 }
 807
 808 static enum drm_mode_status
 809 adv7511_connector_mode_valid(struct drm_connector *connector,
 810                              struct drm_display_mode *mode)
 811 {
 812         struct adv7511 *adv = connector_to_adv7511(connector);
 813
 814         return adv7511_mode_valid(adv, mode);
 815 }
 816
 817 static struct drm_connector_helper_funcs adv7511_connector_helper_funcs = {
 818         .get_modes = adv7511_connector_get_modes,
 819         .mode_valid = adv7511_connector_mode_valid,
 820 };
 821
 822 static enum drm_connector_status
 823 adv7511_connector_detect(struct drm_connector *connector, bool force)
 824 {
 825         struct adv7511 *adv = connector_to_adv7511(connector);
 826
 827         return adv7511_detect(adv, connector);
 828 }
 829
 830 static const struct drm_connector_funcs adv7511_connector_funcs = {
 831         .fill_modes = drm_helper_probe_single_connector_modes,
 832         .detect = adv7511_connector_detect,
 833         .destroy = drm_connector_cleanup,
 834         .reset = drm_atomic_helper_connector_reset,
 835         .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
 836         .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
 837 };
 838
 839 static int adv7511_connector_init(struct adv7511 *adv)
 840 {
 841         struct drm_bridge *bridge = &adv->bridge;
 842         int ret;
 843
 844         if (!bridge->encoder) {
 845                 DRM_ERROR("Parent encoder object not found");
 846                 return -ENODEV;
 847         }
 848
 849         if (adv->i2c_main->irq)
 850                 adv->connector.polled = DRM_CONNECTOR_POLL_HPD;
 851         else
 852                 adv->connector.polled = DRM_CONNECTOR_POLL_CONNECT |
 853                                 DRM_CONNECTOR_POLL_DISCONNECT;
 854
 855         ret = drm_connector_init(bridge->dev, &adv->connector,
 856                                  &adv7511_connector_funcs,
 857                                  DRM_MODE_CONNECTOR_HDMIA);
 858         if (ret < 0) {
 859                 DRM_ERROR("Failed to initialize connector with drm\n");
 860                 return ret;
 861         }
 862         drm_connector_helper_add(&adv->connector,
 863                                  &adv7511_connector_helper_funcs);
 864         drm_connector_attach_encoder(&adv->connector, bridge->encoder);
 865
 866         return 0;
 867 }
 868
 869 /* -----------------------------------------------------------------------------
 870  * DRM Bridge Operations
 871  */
 872
 873 static struct adv7511 *bridge_to_adv7511(struct drm_bridge *bridge)
 874 {
 875         return container_of(bridge, struct adv7511, bridge);
 876 }
 877
 878 static void adv7511_bridge_enable(struct drm_bridge *bridge)
 879 {
 880         struct adv7511 *adv = bridge_to_adv7511(bridge);
 881
 882         adv7511_power_on(adv);
 883 }
 884
 885 static void adv7511_bridge_disable(struct drm_bridge *bridge)
 886 {
 887         struct adv7511 *adv = bridge_to_adv7511(bridge);
 888
 889         adv7511_power_off(adv);
 890 }
 891
 892 static void adv7511_bridge_mode_set(struct drm_bridge *bridge,
 893                                     const struct drm_display_mode *mode,
 894                                     const struct drm_display_mode *adj_mode)
 895 {
 896         struct adv7511 *adv = bridge_to_adv7511(bridge);
 897
 898         adv7511_mode_set(adv, mode, adj_mode);
 899 }
 900
 901 static int adv7511_bridge_attach(struct drm_bridge *bridge,
 902                                  enum drm_bridge_attach_flags flags)
 903 {
 904         struct adv7511 *adv = bridge_to_adv7511(bridge);
 905         int ret = 0;
 906
 907         if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) {
 908                 ret = adv7511_connector_init(adv);
 909                 if (ret < 0)
 910                         return ret;
 911         }
 912
 913         if (adv->type == ADV7533 || adv->type == ADV7535)
 914                 ret = adv7533_attach_dsi(adv);
 915
 916         if (adv->i2c_main->irq)
 917                 regmap_write(adv->regmap, ADV7511_REG_INT_ENABLE(0),
 918                              ADV7511_INT0_HPD);
 919
 920         return ret;
 921 }
 922
 923 static enum drm_connector_status adv7511_bridge_detect(struct drm_bridge *bridge)
 924 {
 925         struct adv7511 *adv = bridge_to_adv7511(bridge);
 926
 927         return adv7511_detect(adv, NULL);
 928 }
 929
 930 static struct edid *adv7511_bridge_get_edid(struct drm_bridge *bridge,
 931                                             struct drm_connector *connector)
 932 {
 933         struct adv7511 *adv = bridge_to_adv7511(bridge);
 934
 935         return adv7511_get_edid(adv, connector);
 936 }
 937
 938 static void adv7511_bridge_hpd_notify(struct drm_bridge *bridge,
 939                                       enum drm_connector_status status)
 940 {
 941         struct adv7511 *adv = bridge_to_adv7511(bridge);
 942
 943         if (status == connector_status_disconnected)
 944                 cec_phys_addr_invalidate(adv->cec_adap);
 945 }
 946
 947 static const struct drm_bridge_funcs adv7511_bridge_funcs = {
 948         .enable = adv7511_bridge_enable,
 949         .disable = adv7511_bridge_disable,
 950         .mode_set = adv7511_bridge_mode_set,
 951         .attach = adv7511_bridge_attach,
 952         .detect = adv7511_bridge_detect,
 953         .get_edid = adv7511_bridge_get_edid,
 954         .hpd_notify = adv7511_bridge_hpd_notify,
 955 };
 956
 957 /* -----------------------------------------------------------------------------
 958  * Probe & remove
 959  */
 960
 961 static const char * const adv7511_supply_names[] = {
 962         "avdd",
 963         "dvdd",
 964         "pvdd",
 965         "bgvdd",
 966         "dvdd-3v",
 967 };
 968
 969 static const char * const adv7533_supply_names[] = {
 970         "avdd",
 971         "dvdd",
 972         "pvdd",
 973         "a2vdd",
 974         "v3p3",
 975         "v1p2",
 976 };
 977
 978 static int adv7511_init_regulators(struct adv7511 *adv)
 979 {
 980         struct device *dev = &adv->i2c_main->dev;
 981         const char * const *supply_names;
 982         unsigned int i;
 983         int ret;
 984
 985         if (adv->type == ADV7511) {
 986                 supply_names = adv7511_supply_names;
 987                 adv->num_supplies = ARRAY_SIZE(adv7511_supply_names);
 988         } else {
 989                 supply_names = adv7533_supply_names;
 990                 adv->num_supplies = ARRAY_SIZE(adv7533_supply_names);
 991         }
 992
 993         adv->supplies = devm_kcalloc(dev, adv->num_supplies,
 994                                      sizeof(*adv->supplies), GFP_KERNEL);
 995         if (!adv->supplies)
 996                 return -ENOMEM;
 997
 998         for (i = 0; i < adv->num_supplies; i++)
 999                 adv->supplies[i].supply = supply_names[i];
1000
1001         ret = devm_regulator_bulk_get(dev, adv->num_supplies, adv->supplies);
1002         if (ret)
1003                 return ret;
1004
1005         return regulator_bulk_enable(adv->num_supplies, adv->supplies);
1006 }
1007
1008 static void adv7511_uninit_regulators(struct adv7511 *adv)
1009 {
1010         regulator_bulk_disable(adv->num_supplies, adv->supplies);
1011 }
1012
1013 static bool adv7511_cec_register_volatile(struct device *dev, unsigned int reg)
1014 {
1015         struct i2c_client *i2c = to_i2c_client(dev);
1016         struct adv7511 *adv7511 = i2c_get_clientdata(i2c);
1017
1018         if (adv7511->type == ADV7533 || adv7511->type == ADV7535)
1019                 reg -= ADV7533_REG_CEC_OFFSET;
1020
1021         switch (reg) {
1022         case ADV7511_REG_CEC_RX_FRAME_HDR:
1023         case ADV7511_REG_CEC_RX_FRAME_DATA0...
1024                 ADV7511_REG_CEC_RX_FRAME_DATA0 + 14:
1025         case ADV7511_REG_CEC_RX_FRAME_LEN:
1026         case ADV7511_REG_CEC_RX_BUFFERS:
1027         case ADV7511_REG_CEC_TX_LOW_DRV_CNT:
1028                 return true;
1029         }
1030
1031         return false;
1032 }
1033
1034 static const struct regmap_config adv7511_cec_regmap_config = {
1035         .reg_bits = 8,
1036         .val_bits = 8,
1037
1038         .max_register = 0xff,
1039         .cache_type = REGCACHE_RBTREE,
1040         .volatile_reg = adv7511_cec_register_volatile,
1041 };
1042
1043 static int adv7511_init_cec_regmap(struct adv7511 *adv)
1044 {
1045         int ret;
1046
1047         adv->i2c_cec = i2c_new_ancillary_device(adv->i2c_main, "cec",
1048                                                 ADV7511_CEC_I2C_ADDR_DEFAULT);
1049         if (IS_ERR(adv->i2c_cec))
1050                 return PTR_ERR(adv->i2c_cec);
1051         i2c_set_clientdata(adv->i2c_cec, adv);
1052
1053         adv->regmap_cec = devm_regmap_init_i2c(adv->i2c_cec,
1054                                         &adv7511_cec_regmap_config);
1055         if (IS_ERR(adv->regmap_cec)) {
1056                 ret = PTR_ERR(adv->regmap_cec);
1057                 goto err;
1058         }
1059
1060         if (adv->type == ADV7533 || adv->type == ADV7535) {
1061                 ret = adv7533_patch_cec_registers(adv);
1062                 if (ret)
1063                         goto err;
1064         }
1065
1066         return 0;
1067 err:
1068         i2c_unregister_device(adv->i2c_cec);
1069         return ret;
1070 }
1071
1072 static int adv7511_parse_dt(struct device_node *np,
1073                             struct adv7511_link_config *config)
1074 {
1075         const char *str;
1076         int ret;
1077
1078         of_property_read_u32(np, "adi,input-depth", &config->input_color_depth);
1079         if (config->input_color_depth != 8 && config->input_color_depth != 10 &&
1080             config->input_color_depth != 12)
1081                 return -EINVAL;
1082
1083         ret = of_property_read_string(np, "adi,input-colorspace", &str);
1084         if (ret < 0)
1085                 return ret;
1086
1087         if (!strcmp(str, "rgb"))
1088                 config->input_colorspace = HDMI_COLORSPACE_RGB;
1089         else if (!strcmp(str, "yuv422"))
1090                 config->input_colorspace = HDMI_COLORSPACE_YUV422;
1091         else if (!strcmp(str, "yuv444"))
1092                 config->input_colorspace = HDMI_COLORSPACE_YUV444;
1093         else
1094                 return -EINVAL;
1095
1096         ret = of_property_read_string(np, "adi,input-clock", &str);
1097         if (ret < 0)
1098                 return ret;
1099
1100         if (!strcmp(str, "1x"))
1101                 config->input_clock = ADV7511_INPUT_CLOCK_1X;
1102         else if (!strcmp(str, "2x"))
1103                 config->input_clock = ADV7511_INPUT_CLOCK_2X;
1104         else if (!strcmp(str, "ddr"))
1105                 config->input_clock = ADV7511_INPUT_CLOCK_DDR;
1106         else
1107                 return -EINVAL;
1108
1109         if (config->input_colorspace == HDMI_COLORSPACE_YUV422 ||
1110             config->input_clock != ADV7511_INPUT_CLOCK_1X) {
1111                 ret = of_property_read_u32(np, "adi,input-style",
1112                                            &config->input_style);
1113                 if (ret)
1114                         return ret;
1115
1116                 if (config->input_style < 1 || config->input_style > 3)
1117                         return -EINVAL;
1118
1119                 ret = of_property_read_string(np, "adi,input-justification",
1120                                               &str);
1121                 if (ret < 0)
1122                         return ret;
1123
1124                 if (!strcmp(str, "left"))
1125                         config->input_justification =
1126                                 ADV7511_INPUT_JUSTIFICATION_LEFT;
1127                 else if (!strcmp(str, "evenly"))
1128                         config->input_justification =
1129                                 ADV7511_INPUT_JUSTIFICATION_EVENLY;
1130                 else if (!strcmp(str, "right"))
1131                         config->input_justification =
1132                                 ADV7511_INPUT_JUSTIFICATION_RIGHT;
1133                 else
1134                         return -EINVAL;
1135
1136         } else {
1137                 config->input_style = 1;
1138                 config->input_justification = ADV7511_INPUT_JUSTIFICATION_LEFT;
1139         }
1140
1141         of_property_read_u32(np, "adi,clock-delay", &config->clock_delay);
1142         if (config->clock_delay < -1200 || config->clock_delay > 1600)
1143                 return -EINVAL;
1144
1145         config->embedded_sync = of_property_read_bool(np, "adi,embedded-sync");
1146
1147         /* Hardcode the sync pulse configurations for now. */
1148         config->sync_pulse = ADV7511_INPUT_SYNC_PULSE_NONE;
1149         config->vsync_polarity = ADV7511_SYNC_POLARITY_PASSTHROUGH;
1150         config->hsync_polarity = ADV7511_SYNC_POLARITY_PASSTHROUGH;
1151
1152         return 0;
1153 }
1154
1155 static int adv7511_probe(struct i2c_client *i2c, const struct i2c_device_id *id)
1156 {
1157         struct adv7511_link_config link_config;
1158         struct adv7511 *adv7511;
1159         struct device *dev = &i2c->dev;
1160         unsigned int val;
1161         int ret;
1162
1163         if (!dev->of_node)
1164                 return -EINVAL;
1165
1166         adv7511 = devm_kzalloc(dev, sizeof(*adv7511), GFP_KERNEL);
1167         if (!adv7511)
1168                 return -ENOMEM;
1169
1170         adv7511->i2c_main = i2c;
1171         adv7511->powered = false;
1172         adv7511->status = connector_status_disconnected;
1173
1174         if (dev->of_node)
1175                 adv7511->type = (enum adv7511_type)of_device_get_match_data(dev);
1176         else
1177                 adv7511->type = id->driver_data;
1178
1179         memset(&link_config, 0, sizeof(link_config));
1180
1181         if (adv7511->type == ADV7511)
1182                 ret = adv7511_parse_dt(dev->of_node, &link_config);
1183         else
1184                 ret = adv7533_parse_dt(dev->of_node, adv7511);
1185         if (ret)
1186                 return ret;
1187
1188         ret = adv7511_init_regulators(adv7511);
1189         if (ret) {
1190                 dev_err(dev, "failed to init regulators\n");
1191                 return ret;
1192         }
1193
1194         /*
1195          * The power down GPIO is optional. If present, toggle it from active to
1196          * inactive to wake up the encoder.
1197          */
1198         adv7511->gpio_pd = devm_gpiod_get_optional(dev, "pd", GPIOD_OUT_HIGH);
1199         if (IS_ERR(adv7511->gpio_pd)) {
1200                 ret = PTR_ERR(adv7511->gpio_pd);
1201                 goto uninit_regulators;
1202         }
1203
1204         if (adv7511->gpio_pd) {
1205                 usleep_range(5000, 6000);
1206                 gpiod_set_value_cansleep(adv7511->gpio_pd, 0);
1207         }
1208
1209         adv7511->regmap = devm_regmap_init_i2c(i2c, &adv7511_regmap_config);
1210         if (IS_ERR(adv7511->regmap)) {
1211                 ret = PTR_ERR(adv7511->regmap);
1212                 goto uninit_regulators;
1213         }
1214
1215         ret = regmap_read(adv7511->regmap, ADV7511_REG_CHIP_REVISION, &val);
1216         if (ret)
1217                 goto uninit_regulators;
1218         dev_dbg(dev, "Rev. %d\n", val);
1219
1220         if (adv7511->type == ADV7511)
1221                 ret = regmap_register_patch(adv7511->regmap,
1222                                             adv7511_fixed_registers,
1223                                             ARRAY_SIZE(adv7511_fixed_registers));
1224         else
1225                 ret = adv7533_patch_registers(adv7511);
1226         if (ret)
1227                 goto uninit_regulators;
1228
1229         adv7511_packet_disable(adv7511, 0xffff);
1230
1231         adv7511->i2c_edid = i2c_new_ancillary_device(i2c, "edid",
1232                                         ADV7511_EDID_I2C_ADDR_DEFAULT);
1233         if (IS_ERR(adv7511->i2c_edid)) {
1234                 ret = PTR_ERR(adv7511->i2c_edid);
1235                 goto uninit_regulators;
1236         }
1237
1238         regmap_write(adv7511->regmap, ADV7511_REG_EDID_I2C_ADDR,
1239                      adv7511->i2c_edid->addr << 1);
1240
1241         adv7511->i2c_packet = i2c_new_ancillary_device(i2c, "packet",
1242                                         ADV7511_PACKET_I2C_ADDR_DEFAULT);
1243         if (IS_ERR(adv7511->i2c_packet)) {
1244                 ret = PTR_ERR(adv7511->i2c_packet);
1245                 goto err_i2c_unregister_edid;
1246         }
1247
1248         regmap_write(adv7511->regmap, ADV7511_REG_PACKET_I2C_ADDR,
1249                      adv7511->i2c_packet->addr << 1);
1250
1251         ret = adv7511_init_cec_regmap(adv7511);
1252         if (ret)
1253                 goto err_i2c_unregister_packet;
1254
1255         regmap_write(adv7511->regmap, ADV7511_REG_CEC_I2C_ADDR,
1256                      adv7511->i2c_cec->addr << 1);
1257
1258         INIT_WORK(&adv7511->hpd_work, adv7511_hpd_work);
1259
1260         if (i2c->irq) {
1261                 init_waitqueue_head(&adv7511->wq);
1262
1263                 ret = devm_request_threaded_irq(dev, i2c->irq, NULL,
1264                                                 adv7511_irq_handler,
1265                                                 IRQF_ONESHOT, dev_name(dev),
1266                                                 adv7511);
1267                 if (ret)
1268                         goto err_unregister_cec;
1269         }
1270
1271         adv7511_power_off(adv7511);
1272
1273         i2c_set_clientdata(i2c, adv7511);
1274
1275         if (adv7511->type == ADV7511)
1276                 adv7511_set_link_config(adv7511, &link_config);
1277
1278         ret = adv7511_cec_init(dev, adv7511);
1279         if (ret)
1280                 goto err_unregister_cec;
1281
1282         adv7511->bridge.funcs = &adv7511_bridge_funcs;
1283         adv7511->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID
1284                             | DRM_BRIDGE_OP_HPD;
1285         adv7511->bridge.of_node = dev->of_node;
1286         adv7511->bridge.type = DRM_MODE_CONNECTOR_HDMIA;
1287
1288         drm_bridge_add(&adv7511->bridge);
1289
1290         adv7511_audio_init(dev, adv7511);
1291         return 0;
1292
1293 err_unregister_cec:
1294         i2c_unregister_device(adv7511->i2c_cec);
1295         clk_disable_unprepare(adv7511->cec_clk);
1296 err_i2c_unregister_packet:
1297         i2c_unregister_device(adv7511->i2c_packet);
1298 err_i2c_unregister_edid:
1299         i2c_unregister_device(adv7511->i2c_edid);
1300 uninit_regulators:
1301         adv7511_uninit_regulators(adv7511);
1302
1303         return ret;
1304 }
1305
1306 static int adv7511_remove(struct i2c_client *i2c)
1307 {
1308         struct adv7511 *adv7511 = i2c_get_clientdata(i2c);
1309
1310         if (adv7511->type == ADV7533 || adv7511->type == ADV7535)
1311                 adv7533_detach_dsi(adv7511);
1312         i2c_unregister_device(adv7511->i2c_cec);
1313         clk_disable_unprepare(adv7511->cec_clk);
1314
1315         adv7511_uninit_regulators(adv7511);
1316
1317         drm_bridge_remove(&adv7511->bridge);
1318
1319         adv7511_audio_exit(adv7511);
1320
1321         cec_unregister_adapter(adv7511->cec_adap);
1322
1323         i2c_unregister_device(adv7511->i2c_packet);
1324         i2c_unregister_device(adv7511->i2c_edid);
1325
1326         return 0;
1327 }
1328
1329 static const struct i2c_device_id adv7511_i2c_ids[] = {
1330         { "adv7511", ADV7511 },
1331         { "adv7511w", ADV7511 },
1332         { "adv7513", ADV7511 },
1333         { "adv7533", ADV7533 },
1334         { "adv7535", ADV7535 },
1335         { }
1336 };
1337 MODULE_DEVICE_TABLE(i2c, adv7511_i2c_ids);
1338
1339 static const struct of_device_id adv7511_of_ids[] = {
1340         { .compatible = "adi,adv7511", .data = (void *)ADV7511 },
1341         { .compatible = "adi,adv7511w", .data = (void *)ADV7511 },
1342         { .compatible = "adi,adv7513", .data = (void *)ADV7511 },
1343         { .compatible = "adi,adv7533", .data = (void *)ADV7533 },
1344         { .compatible = "adi,adv7535", .data = (void *)ADV7535 },
1345         { }
1346 };
1347 MODULE_DEVICE_TABLE(of, adv7511_of_ids);
1348
1349 static struct mipi_dsi_driver adv7533_dsi_driver = {
1350         .driver.name = "adv7533",
1351 };
1352
1353 static struct i2c_driver adv7511_driver = {
1354         .driver = {
1355                 .name = "adv7511",
1356                 .of_match_table = adv7511_of_ids,
1357         },
1358         .id_table = adv7511_i2c_ids,
1359         .probe = adv7511_probe,
1360         .remove = adv7511_remove,
1361 };
1362
1363 static int __init adv7511_init(void)
1364 {
1365         if (IS_ENABLED(CONFIG_DRM_MIPI_DSI))
1366                 mipi_dsi_driver_register(&adv7533_dsi_driver);
1367
1368         return i2c_add_driver(&adv7511_driver);
1369 }
1370 module_init(adv7511_init);
1371
1372 static void __exit adv7511_exit(void)
1373 {
1374         i2c_del_driver(&adv7511_driver);
1375
1376         if (IS_ENABLED(CONFIG_DRM_MIPI_DSI))
1377                 mipi_dsi_driver_unregister(&adv7533_dsi_driver);
1378 }
1379 module_exit(adv7511_exit);
1380
1381 MODULE_AUTHOR("Lars-Peter Clausen <[email protected]>");
1382 MODULE_DESCRIPTION("ADV7511 HDMI transmitter driver");
1383 MODULE_LICENSE("GPL");