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.h>
  13 #include <linux/slab.h>
  14
  15 #include <media/cec.h>
  16
  17 #include <drm/drm_atomic.h>
  18 #include <drm/drm_atomic_helper.h>
  19 #include <drm/drm_edid.h>
  20 #include <drm/drm_of.h>
  21 #include <drm/drm_print.h>
  22 #include <drm/drm_probe_helper.h>
  23
  24 #include "adv7511.h"
  25
  26 /* ADI recommended values for proper operation. */
  27 static const struct reg_sequence adv7511_fixed_registers[] = {
  28         { 0x98, 0x03 },
  29         { 0x9a, 0xe0 },
  30         { 0x9c, 0x30 },
  31         { 0x9d, 0x61 },
  32         { 0xa2, 0xa4 },
  33         { 0xa3, 0xa4 },
  34         { 0xe0, 0xd0 },
  35         { 0xf9, 0x00 },
  36         { 0x55, 0x02 },
  37 };
  38
  39 /* -----------------------------------------------------------------------------
  40  * Register access
  41  */
  42
  43 static const uint8_t adv7511_register_defaults[] = {
  44         0x12, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 00 */
  45         0x00, 0x00, 0x01, 0x0e, 0xbc, 0x18, 0x01, 0x13,
  46         0x25, 0x37, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 10 */
  47         0x46, 0x62, 0x04, 0xa8, 0x00, 0x00, 0x1c, 0x84,
  48         0x1c, 0xbf, 0x04, 0xa8, 0x1e, 0x70, 0x02, 0x1e, /* 20 */
  49         0x00, 0x00, 0x04, 0xa8, 0x08, 0x12, 0x1b, 0xac,
  50         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 30 */
  51         0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0xb0,
  52         0x00, 0x50, 0x90, 0x7e, 0x79, 0x70, 0x00, 0x00, /* 40 */
  53         0x00, 0xa8, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00,
  54         0x00, 0x00, 0x02, 0x0d, 0x00, 0x00, 0x00, 0x00, /* 50 */
  55         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  56         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 60 */
  57         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  58         0x01, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 70 */
  59         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  60         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 80 */
  61         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  62         0x00, 0x00, 0x00, 0x00, 0xc0, 0x00, 0x00, 0x00, /* 90 */
  63         0x0b, 0x02, 0x00, 0x18, 0x5a, 0x60, 0x00, 0x00,
  64         0x00, 0x00, 0x80, 0x80, 0x08, 0x04, 0x00, 0x00, /* a0 */
  65         0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x40, 0x14,
  66         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* b0 */
  67         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  68         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* c0 */
  69         0x00, 0x03, 0x00, 0x00, 0x02, 0x00, 0x01, 0x04,
  70         0x30, 0xff, 0x80, 0x80, 0x80, 0x00, 0x00, 0x00, /* d0 */
  71         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x01,
  72         0x80, 0x75, 0x00, 0x00, 0x60, 0x00, 0x00, 0x00, /* e0 */
  73         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  74         0x00, 0x00, 0x00, 0x00, 0x00, 0x75, 0x11, 0x00, /* f0 */
  75         0x00, 0x7c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  76 };
  77
  78 static bool adv7511_register_volatile(struct device *dev, unsigned int reg)
  79 {
  80         switch (reg) {
  81         case ADV7511_REG_CHIP_REVISION:
  82         case ADV7511_REG_SPDIF_FREQ:
  83         case ADV7511_REG_CTS_AUTOMATIC1:
  84         case ADV7511_REG_CTS_AUTOMATIC2:
  85         case ADV7511_REG_VIC_DETECTED:
  86         case ADV7511_REG_VIC_SEND:
  87         case ADV7511_REG_AUX_VIC_DETECTED:
  88         case ADV7511_REG_STATUS:
  89         case ADV7511_REG_GC(1):
  90         case ADV7511_REG_INT(0):
  91         case ADV7511_REG_INT(1):
  92         case ADV7511_REG_PLL_STATUS:
  93         case ADV7511_REG_AN(0):
  94         case ADV7511_REG_AN(1):
  95         case ADV7511_REG_AN(2):
  96         case ADV7511_REG_AN(3):
  97         case ADV7511_REG_AN(4):
  98         case ADV7511_REG_AN(5):
  99         case ADV7511_REG_AN(6):
 100         case ADV7511_REG_AN(7):
 101         case ADV7511_REG_HDCP_STATUS:
 102         case ADV7511_REG_BCAPS:
 103         case ADV7511_REG_BKSV(0):
 104         case ADV7511_REG_BKSV(1):
 105         case ADV7511_REG_BKSV(2):
 106         case ADV7511_REG_BKSV(3):
 107         case ADV7511_REG_BKSV(4):
 108         case ADV7511_REG_DDC_STATUS:
 109         case ADV7511_REG_EDID_READ_CTRL:
 110         case ADV7511_REG_BSTATUS(0):
 111         case ADV7511_REG_BSTATUS(1):
 112         case ADV7511_REG_CHIP_ID_HIGH:
 113         case ADV7511_REG_CHIP_ID_LOW:
 114                 return true;
 115         }
 116
 117         return false;
 118 }
 119
 120 static const struct regmap_config adv7511_regmap_config = {
 121         .reg_bits = 8,
 122         .val_bits = 8,
 123
 124         .max_register = 0xff,
 125         .cache_type = REGCACHE_MAPLE,
 126         .reg_defaults_raw = adv7511_register_defaults,
 127         .num_reg_defaults_raw = ARRAY_SIZE(adv7511_register_defaults),
 128
 129         .volatile_reg = adv7511_register_volatile,
 130 };
 131
 132 /* -----------------------------------------------------------------------------
 133  * Hardware configuration
 134  */
 135
 136 static void adv7511_set_colormap(struct adv7511 *adv7511, bool enable,
 137                                  const uint16_t *coeff,
 138                                  unsigned int scaling_factor)
 139 {
 140         unsigned int i;
 141
 142         regmap_update_bits(adv7511->regmap, ADV7511_REG_CSC_UPPER(1),
 143                            ADV7511_CSC_UPDATE_MODE, ADV7511_CSC_UPDATE_MODE);
 144
 145         if (enable) {
 146                 for (i = 0; i < 12; ++i) {
 147                         regmap_update_bits(adv7511->regmap,
 148                                            ADV7511_REG_CSC_UPPER(i),
 149                                            0x1f, coeff[i] >> 8);
 150                         regmap_write(adv7511->regmap,
 151                                      ADV7511_REG_CSC_LOWER(i),
 152                                      coeff[i] & 0xff);
 153                 }
 154         }
 155
 156         if (enable)
 157                 regmap_update_bits(adv7511->regmap, ADV7511_REG_CSC_UPPER(0),
 158                                    0xe0, 0x80 | (scaling_factor << 5));
 159         else
 160                 regmap_update_bits(adv7511->regmap, ADV7511_REG_CSC_UPPER(0),
 161                                    0x80, 0x00);
 162
 163         regmap_update_bits(adv7511->regmap, ADV7511_REG_CSC_UPPER(1),
 164                            ADV7511_CSC_UPDATE_MODE, 0);
 165 }
 166
 167 static int adv7511_packet_enable(struct adv7511 *adv7511, unsigned int packet)
 168 {
 169         if (packet & 0xff)
 170                 regmap_update_bits(adv7511->regmap, ADV7511_REG_PACKET_ENABLE0,
 171                                    packet, 0xff);
 172
 173         if (packet & 0xff00) {
 174                 packet >>= 8;
 175                 regmap_update_bits(adv7511->regmap, ADV7511_REG_PACKET_ENABLE1,
 176                                    packet, 0xff);
 177         }
 178
 179         return 0;
 180 }
 181
 182 static int adv7511_packet_disable(struct adv7511 *adv7511, unsigned int packet)
 183 {
 184         if (packet & 0xff)
 185                 regmap_update_bits(adv7511->regmap, ADV7511_REG_PACKET_ENABLE0,
 186                                    packet, 0x00);
 187
 188         if (packet & 0xff00) {
 189                 packet >>= 8;
 190                 regmap_update_bits(adv7511->regmap, ADV7511_REG_PACKET_ENABLE1,
 191                                    packet, 0x00);
 192         }
 193
 194         return 0;
 195 }
 196
 197 /* Coefficients for adv7511 color space conversion */
 198 static const uint16_t adv7511_csc_ycbcr_to_rgb[] = {
 199         0x0734, 0x04ad, 0x0000, 0x1c1b,
 200         0x1ddc, 0x04ad, 0x1f24, 0x0135,
 201         0x0000, 0x04ad, 0x087c, 0x1b77,
 202 };
 203
 204 static void adv7511_set_config_csc(struct adv7511 *adv7511,
 205                                    struct drm_connector *connector,
 206                                    bool rgb, bool hdmi_mode)
 207 {
 208         struct adv7511_video_config config;
 209         bool output_format_422, output_format_ycbcr;
 210         unsigned int mode;
 211         uint8_t infoframe[17];
 212
 213         config.hdmi_mode = hdmi_mode;
 214
 215         hdmi_avi_infoframe_init(&config.avi_infoframe);
 216
 217         config.avi_infoframe.scan_mode = HDMI_SCAN_MODE_UNDERSCAN;
 218
 219         if (rgb) {
 220                 config.csc_enable = false;
 221                 config.avi_infoframe.colorspace = HDMI_COLORSPACE_RGB;
 222         } else {
 223                 config.csc_scaling_factor = ADV7511_CSC_SCALING_4;
 224                 config.csc_coefficents = adv7511_csc_ycbcr_to_rgb;
 225
 226                 if ((connector->display_info.color_formats &
 227                      DRM_COLOR_FORMAT_YCBCR422) &&
 228                     config.hdmi_mode) {
 229                         config.csc_enable = false;
 230                         config.avi_infoframe.colorspace =
 231                                 HDMI_COLORSPACE_YUV422;
 232                 } else {
 233                         config.csc_enable = true;
 234                         config.avi_infoframe.colorspace = HDMI_COLORSPACE_RGB;
 235                 }
 236         }
 237
 238         if (config.hdmi_mode) {
 239                 mode = ADV7511_HDMI_CFG_MODE_HDMI;
 240
 241                 switch (config.avi_infoframe.colorspace) {
 242                 case HDMI_COLORSPACE_YUV444:
 243                         output_format_422 = false;
 244                         output_format_ycbcr = true;
 245                         break;
 246                 case HDMI_COLORSPACE_YUV422:
 247                         output_format_422 = true;
 248                         output_format_ycbcr = true;
 249                         break;
 250                 default:
 251                         output_format_422 = false;
 252                         output_format_ycbcr = false;
 253                         break;
 254                 }
 255         } else {
 256                 mode = ADV7511_HDMI_CFG_MODE_DVI;
 257                 output_format_422 = false;
 258                 output_format_ycbcr = false;
 259         }
 260
 261         adv7511_packet_disable(adv7511, ADV7511_PACKET_ENABLE_AVI_INFOFRAME);
 262
 263         adv7511_set_colormap(adv7511, config.csc_enable,
 264                              config.csc_coefficents,
 265                              config.csc_scaling_factor);
 266
 267         regmap_update_bits(adv7511->regmap, ADV7511_REG_VIDEO_INPUT_CFG1, 0x81,
 268                            (output_format_422 << 7) | output_format_ycbcr);
 269
 270         regmap_update_bits(adv7511->regmap, ADV7511_REG_HDCP_HDMI_CFG,
 271                            ADV7511_HDMI_CFG_MODE_MASK, mode);
 272
 273         hdmi_avi_infoframe_pack(&config.avi_infoframe, infoframe,
 274                                 sizeof(infoframe));
 275
 276         /* The AVI infoframe id is not configurable */
 277         regmap_bulk_write(adv7511->regmap, ADV7511_REG_AVI_INFOFRAME_VERSION,
 278                           infoframe + 1, sizeof(infoframe) - 1);
 279
 280         adv7511_packet_enable(adv7511, ADV7511_PACKET_ENABLE_AVI_INFOFRAME);
 281 }
 282
 283 static void adv7511_set_link_config(struct adv7511 *adv7511,
 284                                     const struct adv7511_link_config *config)
 285 {
 286         /*
 287          * The input style values documented in the datasheet don't match the
 288          * hardware register field values :-(
 289          */
 290         static const unsigned int input_styles[4] = { 0, 2, 1, 3 };
 291
 292         unsigned int clock_delay;
 293         unsigned int color_depth;
 294         unsigned int input_id;
 295
 296         clock_delay = (config->clock_delay + 1200) / 400;
 297         color_depth = config->input_color_depth == 8 ? 3
 298                     : (config->input_color_depth == 10 ? 1 : 2);
 299
 300         /* TODO Support input ID 6 */
 301         if (config->input_colorspace != HDMI_COLORSPACE_YUV422)
 302                 input_id = config->input_clock == ADV7511_INPUT_CLOCK_DDR
 303                          ? 5 : 0;
 304         else if (config->input_clock == ADV7511_INPUT_CLOCK_DDR)
 305                 input_id = config->embedded_sync ? 8 : 7;
 306         else if (config->input_clock == ADV7511_INPUT_CLOCK_2X)
 307                 input_id = config->embedded_sync ? 4 : 3;
 308         else
 309                 input_id = config->embedded_sync ? 2 : 1;
 310
 311         regmap_update_bits(adv7511->regmap, ADV7511_REG_I2C_FREQ_ID_CFG, 0xf,
 312                            input_id);
 313         regmap_update_bits(adv7511->regmap, ADV7511_REG_VIDEO_INPUT_CFG1, 0x7e,
 314                            (color_depth << 4) |
 315                            (input_styles[config->input_style] << 2));
 316         regmap_write(adv7511->regmap, ADV7511_REG_VIDEO_INPUT_CFG2,
 317                      config->input_justification << 3);
 318         regmap_write(adv7511->regmap, ADV7511_REG_TIMING_GEN_SEQ,
 319                      config->sync_pulse << 2);
 320
 321         regmap_write(adv7511->regmap, 0xba, clock_delay << 5);
 322
 323         adv7511->embedded_sync = config->embedded_sync;
 324         adv7511->hsync_polarity = config->hsync_polarity;
 325         adv7511->vsync_polarity = config->vsync_polarity;
 326         adv7511->rgb = config->input_colorspace == HDMI_COLORSPACE_RGB;
 327 }
 328
 329 static void __adv7511_power_on(struct adv7511 *adv7511)
 330 {
 331         adv7511->current_edid_segment = -1;
 332
 333         regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER,
 334                            ADV7511_POWER_POWER_DOWN, 0);
 335         if (adv7511->i2c_main->irq) {
 336                 /*
 337                  * Documentation says the INT_ENABLE registers are reset in
 338                  * POWER_DOWN mode. My 7511w preserved the bits, however.
 339                  * Still, let's be safe and stick to the documentation.
 340                  */
 341                 regmap_write(adv7511->regmap, ADV7511_REG_INT_ENABLE(0),
 342                              ADV7511_INT0_EDID_READY | ADV7511_INT0_HPD);
 343                 regmap_update_bits(adv7511->regmap,
 344                                    ADV7511_REG_INT_ENABLE(1),
 345                                    ADV7511_INT1_DDC_ERROR,
 346                                    ADV7511_INT1_DDC_ERROR);
 347         }
 348
 349         /*
 350          * Per spec it is allowed to pulse the HPD signal to indicate that the
 351          * EDID information has changed. Some monitors do this when they wakeup
 352          * from standby or are enabled. When the HPD goes low the adv7511 is
 353          * reset and the outputs are disabled which might cause the monitor to
 354          * go to standby again. To avoid this we ignore the HPD pin for the
 355          * first few seconds after enabling the output. On the other hand
 356          * adv7535 require to enable HPD Override bit for proper HPD.
 357          */
 358         if (adv7511->info->hpd_override_enable)
 359                 regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2,
 360                                    ADV7535_REG_POWER2_HPD_OVERRIDE,
 361                                    ADV7535_REG_POWER2_HPD_OVERRIDE);
 362         else
 363                 regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2,
 364                                    ADV7511_REG_POWER2_HPD_SRC_MASK,
 365                                    ADV7511_REG_POWER2_HPD_SRC_NONE);
 366 }
 367
 368 static void adv7511_power_on(struct adv7511 *adv7511)
 369 {
 370         __adv7511_power_on(adv7511);
 371
 372         /*
 373          * Most of the registers are reset during power down or when HPD is low.
 374          */
 375         regcache_sync(adv7511->regmap);
 376
 377         if (adv7511->info->has_dsi)
 378                 adv7533_dsi_power_on(adv7511);
 379         adv7511->powered = true;
 380 }
 381
 382 static void __adv7511_power_off(struct adv7511 *adv7511)
 383 {
 384         /* TODO: setup additional power down modes */
 385         if (adv7511->info->hpd_override_enable)
 386                 regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2,
 387                                    ADV7535_REG_POWER2_HPD_OVERRIDE, 0);
 388
 389         regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER,
 390                            ADV7511_POWER_POWER_DOWN,
 391                            ADV7511_POWER_POWER_DOWN);
 392         regmap_update_bits(adv7511->regmap,
 393                            ADV7511_REG_INT_ENABLE(1),
 394                            ADV7511_INT1_DDC_ERROR, 0);
 395         regcache_mark_dirty(adv7511->regmap);
 396 }
 397
 398 static void adv7511_power_off(struct adv7511 *adv7511)
 399 {
 400         __adv7511_power_off(adv7511);
 401         if (adv7511->info->has_dsi)
 402                 adv7533_dsi_power_off(adv7511);
 403         adv7511->powered = false;
 404 }
 405
 406 /* -----------------------------------------------------------------------------
 407  * Interrupt and hotplug detection
 408  */
 409
 410 static bool adv7511_hpd(struct adv7511 *adv7511)
 411 {
 412         unsigned int irq0;
 413         int ret;
 414
 415         ret = regmap_read(adv7511->regmap, ADV7511_REG_INT(0), &irq0);
 416         if (ret < 0)
 417                 return false;
 418
 419         if (irq0 & ADV7511_INT0_HPD) {
 420                 regmap_write(adv7511->regmap, ADV7511_REG_INT(0),
 421                              ADV7511_INT0_HPD);
 422                 return true;
 423         }
 424
 425         return false;
 426 }
 427
 428 static void adv7511_hpd_work(struct work_struct *work)
 429 {
 430         struct adv7511 *adv7511 = container_of(work, struct adv7511, hpd_work);
 431         enum drm_connector_status status;
 432         unsigned int val;
 433         int ret;
 434
 435         ret = regmap_read(adv7511->regmap, ADV7511_REG_STATUS, &val);
 436         if (ret < 0)
 437                 status = connector_status_disconnected;
 438         else if (val & ADV7511_STATUS_HPD)
 439                 status = connector_status_connected;
 440         else
 441                 status = connector_status_disconnected;
 442
 443         /*
 444          * The bridge resets its registers on unplug. So when we get a plug
 445          * event and we're already supposed to be powered, cycle the bridge to
 446          * restore its state.
 447          */
 448         if (status == connector_status_connected &&
 449             adv7511->connector.status == connector_status_disconnected &&
 450             adv7511->powered) {
 451                 regcache_mark_dirty(adv7511->regmap);
 452                 adv7511_power_on(adv7511);
 453         }
 454
 455         if (adv7511->connector.status != status) {
 456                 adv7511->connector.status = status;
 457
 458                 if (adv7511->connector.dev) {
 459                         if (status == connector_status_disconnected)
 460                                 cec_phys_addr_invalidate(adv7511->cec_adap);
 461                         drm_kms_helper_hotplug_event(adv7511->connector.dev);
 462                 } else {
 463                         drm_bridge_hpd_notify(&adv7511->bridge, status);
 464                 }
 465         }
 466 }
 467
 468 static int adv7511_irq_process(struct adv7511 *adv7511, bool process_hpd)
 469 {
 470         unsigned int irq0, irq1;
 471         int ret;
 472         int cec_status = IRQ_NONE;
 473         int irq_status = IRQ_NONE;
 474
 475         ret = regmap_read(adv7511->regmap, ADV7511_REG_INT(0), &irq0);
 476         if (ret < 0)
 477                 return ret;
 478
 479         ret = regmap_read(adv7511->regmap, ADV7511_REG_INT(1), &irq1);
 480         if (ret < 0)
 481                 return ret;
 482
 483         regmap_write(adv7511->regmap, ADV7511_REG_INT(0), irq0);
 484         regmap_write(adv7511->regmap, ADV7511_REG_INT(1), irq1);
 485
 486         if (process_hpd && irq0 & ADV7511_INT0_HPD && adv7511->bridge.encoder) {
 487                 schedule_work(&adv7511->hpd_work);
 488                 irq_status = IRQ_HANDLED;
 489         }
 490
 491         if (irq0 & ADV7511_INT0_EDID_READY || irq1 & ADV7511_INT1_DDC_ERROR) {
 492                 adv7511->edid_read = true;
 493
 494                 if (adv7511->i2c_main->irq)
 495                         wake_up_all(&adv7511->wq);
 496                 irq_status = IRQ_HANDLED;
 497         }
 498
 499 #ifdef CONFIG_DRM_I2C_ADV7511_CEC
 500         cec_status = adv7511_cec_irq_process(adv7511, irq1);
 501 #endif
 502
 503         /* If there is no IRQ to handle, exit indicating no IRQ data */
 504         if (irq_status == IRQ_HANDLED || cec_status == IRQ_HANDLED)
 505                 return IRQ_HANDLED;
 506
 507         return IRQ_NONE;
 508 }
 509
 510 static irqreturn_t adv7511_irq_handler(int irq, void *devid)
 511 {
 512         struct adv7511 *adv7511 = devid;
 513         int ret;
 514
 515         ret = adv7511_irq_process(adv7511, true);
 516         return ret < 0 ? IRQ_NONE : ret;
 517 }
 518
 519 /* -----------------------------------------------------------------------------
 520  * EDID retrieval
 521  */
 522
 523 static int adv7511_wait_for_edid(struct adv7511 *adv7511, int timeout)
 524 {
 525         int ret;
 526
 527         if (adv7511->i2c_main->irq) {
 528                 ret = wait_event_interruptible_timeout(adv7511->wq,
 529                                 adv7511->edid_read, msecs_to_jiffies(timeout));
 530         } else {
 531                 for (; timeout > 0; timeout -= 25) {
 532                         ret = adv7511_irq_process(adv7511, false);
 533                         if (ret < 0)
 534                                 break;
 535
 536                         if (adv7511->edid_read)
 537                                 break;
 538
 539                         msleep(25);
 540                 }
 541         }
 542
 543         return adv7511->edid_read ? 0 : -EIO;
 544 }
 545
 546 static int adv7511_get_edid_block(void *data, u8 *buf, unsigned int block,
 547                                   size_t len)
 548 {
 549         struct adv7511 *adv7511 = data;
 550         struct i2c_msg xfer[2];
 551         uint8_t offset;
 552         unsigned int i;
 553         int ret;
 554
 555         if (len > 128)
 556                 return -EINVAL;
 557
 558         if (adv7511->current_edid_segment != block / 2) {
 559                 unsigned int status;
 560
 561                 ret = regmap_read(adv7511->regmap, ADV7511_REG_DDC_STATUS,
 562                                   &status);
 563                 if (ret < 0)
 564                         return ret;
 565
 566                 if (status != 2) {
 567                         adv7511->edid_read = false;
 568                         regmap_write(adv7511->regmap, ADV7511_REG_EDID_SEGMENT,
 569                                      block);
 570                         ret = adv7511_wait_for_edid(adv7511, 200);
 571                         if (ret < 0)
 572                                 return ret;
 573                 }
 574
 575                 /* Break this apart, hopefully more I2C controllers will
 576                  * support 64 byte transfers than 256 byte transfers
 577                  */
 578
 579                 xfer[0].addr = adv7511->i2c_edid->addr;
 580                 xfer[0].flags = 0;
 581                 xfer[0].len = 1;
 582                 xfer[0].buf = &offset;
 583                 xfer[1].addr = adv7511->i2c_edid->addr;
 584                 xfer[1].flags = I2C_M_RD;
 585                 xfer[1].len = 64;
 586                 xfer[1].buf = adv7511->edid_buf;
 587
 588                 offset = 0;
 589
 590                 for (i = 0; i < 4; ++i) {
 591                         ret = i2c_transfer(adv7511->i2c_edid->adapter, xfer,
 592                                            ARRAY_SIZE(xfer));
 593                         if (ret < 0)
 594                                 return ret;
 595                         else if (ret != 2)
 596                                 return -EIO;
 597
 598                         xfer[1].buf += 64;
 599                         offset += 64;
 600                 }
 601
 602                 adv7511->current_edid_segment = block / 2;
 603         }
 604
 605         if (block % 2 == 0)
 606                 memcpy(buf, adv7511->edid_buf, len);
 607         else
 608                 memcpy(buf, adv7511->edid_buf + 128, len);
 609
 610         return 0;
 611 }
 612
 613 /* -----------------------------------------------------------------------------
 614  * ADV75xx helpers
 615  */
 616
 617 static const struct drm_edid *adv7511_edid_read(struct adv7511 *adv7511,
 618                                                 struct drm_connector *connector)
 619 {
 620         const struct drm_edid *drm_edid;
 621
 622         /* Reading the EDID only works if the device is powered */
 623         if (!adv7511->powered) {
 624                 unsigned int edid_i2c_addr =
 625                                         (adv7511->i2c_edid->addr << 1);
 626
 627                 __adv7511_power_on(adv7511);
 628
 629                 /* Reset the EDID_I2C_ADDR register as it might be cleared */
 630                 regmap_write(adv7511->regmap, ADV7511_REG_EDID_I2C_ADDR,
 631                              edid_i2c_addr);
 632         }
 633
 634         drm_edid = drm_edid_read_custom(connector, adv7511_get_edid_block, adv7511);
 635
 636         if (!adv7511->powered)
 637                 __adv7511_power_off(adv7511);
 638
 639         if (drm_edid) {
 640                 /*
 641                  * FIXME: The CEC physical address should be set using
 642                  * cec_s_phys_addr(adap,
 643                  * connector->display_info.source_physical_address, false) from
 644                  * a path that has read the EDID and called
 645                  * drm_edid_connector_update().
 646                  */
 647                 const struct edid *edid = drm_edid_raw(drm_edid);
 648
 649                 adv7511_set_config_csc(adv7511, connector, adv7511->rgb,
 650                                        drm_detect_hdmi_monitor(edid));
 651
 652                 cec_s_phys_addr_from_edid(adv7511->cec_adap, edid);
 653         } else {
 654                 cec_s_phys_addr_from_edid(adv7511->cec_adap, NULL);
 655         }
 656
 657         return drm_edid;
 658 }
 659
 660 static int adv7511_get_modes(struct adv7511 *adv7511,
 661                              struct drm_connector *connector)
 662 {
 663         const struct drm_edid *drm_edid;
 664         unsigned int count;
 665
 666         drm_edid = adv7511_edid_read(adv7511, connector);
 667
 668         drm_edid_connector_update(connector, drm_edid);
 669         count = drm_edid_connector_add_modes(connector);
 670
 671         drm_edid_free(drm_edid);
 672
 673         return count;
 674 }
 675
 676 static enum drm_connector_status
 677 adv7511_detect(struct adv7511 *adv7511, struct drm_connector *connector)
 678 {
 679         enum drm_connector_status status;
 680         unsigned int val;
 681         bool hpd;
 682         int ret;
 683
 684         ret = regmap_read(adv7511->regmap, ADV7511_REG_STATUS, &val);
 685         if (ret < 0)
 686                 return connector_status_disconnected;
 687
 688         if (val & ADV7511_STATUS_HPD)
 689                 status = connector_status_connected;
 690         else
 691                 status = connector_status_disconnected;
 692
 693         hpd = adv7511_hpd(adv7511);
 694
 695         /* The chip resets itself when the cable is disconnected, so in case
 696          * there is a pending HPD interrupt and the cable is connected there was
 697          * at least one transition from disconnected to connected and the chip
 698          * has to be reinitialized. */
 699         if (status == connector_status_connected && hpd && adv7511->powered) {
 700                 regcache_mark_dirty(adv7511->regmap);
 701                 adv7511_power_on(adv7511);
 702                 if (connector)
 703                         adv7511_get_modes(adv7511, connector);
 704                 if (adv7511->status == connector_status_connected)
 705                         status = connector_status_disconnected;
 706         } else {
 707                 /* Renable HPD sensing */
 708                 if (adv7511->info->hpd_override_enable)
 709                         regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2,
 710                                            ADV7535_REG_POWER2_HPD_OVERRIDE,
 711                                            ADV7535_REG_POWER2_HPD_OVERRIDE);
 712                 else
 713                         regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2,
 714                                            ADV7511_REG_POWER2_HPD_SRC_MASK,
 715                                            ADV7511_REG_POWER2_HPD_SRC_BOTH);
 716         }
 717
 718         adv7511->status = status;
 719         return status;
 720 }
 721
 722 static enum drm_mode_status adv7511_mode_valid(struct adv7511 *adv7511,
 723                               const struct drm_display_mode *mode)
 724 {
 725         if (mode->clock > 165000)
 726                 return MODE_CLOCK_HIGH;
 727
 728         return MODE_OK;
 729 }
 730
 731 static void adv7511_mode_set(struct adv7511 *adv7511,
 732                              const struct drm_display_mode *mode,
 733                              const struct drm_display_mode *adj_mode)
 734 {
 735         unsigned int low_refresh_rate;
 736         unsigned int hsync_polarity = 0;
 737         unsigned int vsync_polarity = 0;
 738
 739         if (adv7511->embedded_sync) {
 740                 unsigned int hsync_offset, hsync_len;
 741                 unsigned int vsync_offset, vsync_len;
 742
 743                 hsync_offset = adj_mode->crtc_hsync_start -
 744                                adj_mode->crtc_hdisplay;
 745                 vsync_offset = adj_mode->crtc_vsync_start -
 746                                adj_mode->crtc_vdisplay;
 747                 hsync_len = adj_mode->crtc_hsync_end -
 748                             adj_mode->crtc_hsync_start;
 749                 vsync_len = adj_mode->crtc_vsync_end -
 750                             adj_mode->crtc_vsync_start;
 751
 752                 /* The hardware vsync generator has a off-by-one bug */
 753                 vsync_offset += 1;
 754
 755                 regmap_write(adv7511->regmap, ADV7511_REG_HSYNC_PLACEMENT_MSB,
 756                              ((hsync_offset >> 10) & 0x7) << 5);
 757                 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(0),
 758                              (hsync_offset >> 2) & 0xff);
 759                 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(1),
 760                              ((hsync_offset & 0x3) << 6) |
 761                              ((hsync_len >> 4) & 0x3f));
 762                 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(2),
 763                              ((hsync_len & 0xf) << 4) |
 764                              ((vsync_offset >> 6) & 0xf));
 765                 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(3),
 766                              ((vsync_offset & 0x3f) << 2) |
 767                              ((vsync_len >> 8) & 0x3));
 768                 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(4),
 769                              vsync_len & 0xff);
 770
 771                 hsync_polarity = !(adj_mode->flags & DRM_MODE_FLAG_PHSYNC);
 772                 vsync_polarity = !(adj_mode->flags & DRM_MODE_FLAG_PVSYNC);
 773         } else {
 774                 enum adv7511_sync_polarity mode_hsync_polarity;
 775                 enum adv7511_sync_polarity mode_vsync_polarity;
 776
 777                 /**
 778                  * If the input signal is always low or always high we want to
 779                  * invert or let it passthrough depending on the polarity of the
 780                  * current mode.
 781                  **/
 782                 if (adj_mode->flags & DRM_MODE_FLAG_NHSYNC)
 783                         mode_hsync_polarity = ADV7511_SYNC_POLARITY_LOW;
 784                 else
 785                         mode_hsync_polarity = ADV7511_SYNC_POLARITY_HIGH;
 786
 787                 if (adj_mode->flags & DRM_MODE_FLAG_NVSYNC)
 788                         mode_vsync_polarity = ADV7511_SYNC_POLARITY_LOW;
 789                 else
 790                         mode_vsync_polarity = ADV7511_SYNC_POLARITY_HIGH;
 791
 792                 if (adv7511->hsync_polarity != mode_hsync_polarity &&
 793                     adv7511->hsync_polarity !=
 794                     ADV7511_SYNC_POLARITY_PASSTHROUGH)
 795                         hsync_polarity = 1;
 796
 797                 if (adv7511->vsync_polarity != mode_vsync_polarity &&
 798                     adv7511->vsync_polarity !=
 799                     ADV7511_SYNC_POLARITY_PASSTHROUGH)
 800                         vsync_polarity = 1;
 801         }
 802
 803         if (drm_mode_vrefresh(mode) <= 24)
 804                 low_refresh_rate = ADV7511_LOW_REFRESH_RATE_24HZ;
 805         else if (drm_mode_vrefresh(mode) <= 25)
 806                 low_refresh_rate = ADV7511_LOW_REFRESH_RATE_25HZ;
 807         else if (drm_mode_vrefresh(mode) <= 30)
 808                 low_refresh_rate = ADV7511_LOW_REFRESH_RATE_30HZ;
 809         else
 810                 low_refresh_rate = ADV7511_LOW_REFRESH_RATE_NONE;
 811
 812         if (adv7511->info->type == ADV7511)
 813                 regmap_update_bits(adv7511->regmap, 0xfb,
 814                                    0x6, low_refresh_rate << 1);
 815         else
 816                 regmap_update_bits(adv7511->regmap, 0x4a,
 817                                    0xc, low_refresh_rate << 2);
 818
 819         regmap_update_bits(adv7511->regmap, 0x17,
 820                 0x60, (vsync_polarity << 6) | (hsync_polarity << 5));
 821
 822         drm_mode_copy(&adv7511->curr_mode, adj_mode);
 823
 824         /*
 825          * TODO Test first order 4:2:2 to 4:4:4 up conversion method, which is
 826          * supposed to give better results.
 827          */
 828
 829         adv7511->f_tmds = mode->clock;
 830 }
 831
 832 /* -----------------------------------------------------------------------------
 833  * DRM Connector Operations
 834  */
 835
 836 static struct adv7511 *connector_to_adv7511(struct drm_connector *connector)
 837 {
 838         return container_of(connector, struct adv7511, connector);
 839 }
 840
 841 static int adv7511_connector_get_modes(struct drm_connector *connector)
 842 {
 843         struct adv7511 *adv = connector_to_adv7511(connector);
 844
 845         return adv7511_get_modes(adv, connector);
 846 }
 847
 848 static enum drm_mode_status
 849 adv7511_connector_mode_valid(struct drm_connector *connector,
 850                              struct drm_display_mode *mode)
 851 {
 852         struct adv7511 *adv = connector_to_adv7511(connector);
 853
 854         return adv7511_mode_valid(adv, mode);
 855 }
 856
 857 static struct drm_connector_helper_funcs adv7511_connector_helper_funcs = {
 858         .get_modes = adv7511_connector_get_modes,
 859         .mode_valid = adv7511_connector_mode_valid,
 860 };
 861
 862 static enum drm_connector_status
 863 adv7511_connector_detect(struct drm_connector *connector, bool force)
 864 {
 865         struct adv7511 *adv = connector_to_adv7511(connector);
 866
 867         return adv7511_detect(adv, connector);
 868 }
 869
 870 static const struct drm_connector_funcs adv7511_connector_funcs = {
 871         .fill_modes = drm_helper_probe_single_connector_modes,
 872         .detect = adv7511_connector_detect,
 873         .destroy = drm_connector_cleanup,
 874         .reset = drm_atomic_helper_connector_reset,
 875         .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
 876         .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
 877 };
 878
 879 static int adv7511_connector_init(struct adv7511 *adv)
 880 {
 881         struct drm_bridge *bridge = &adv->bridge;
 882         int ret;
 883
 884         if (adv->i2c_main->irq)
 885                 adv->connector.polled = DRM_CONNECTOR_POLL_HPD;
 886         else
 887                 adv->connector.polled = DRM_CONNECTOR_POLL_CONNECT |
 888                                 DRM_CONNECTOR_POLL_DISCONNECT;
 889
 890         ret = drm_connector_init(bridge->dev, &adv->connector,
 891                                  &adv7511_connector_funcs,
 892                                  DRM_MODE_CONNECTOR_HDMIA);
 893         if (ret < 0) {
 894                 DRM_ERROR("Failed to initialize connector with drm\n");
 895                 return ret;
 896         }
 897         drm_connector_helper_add(&adv->connector,
 898                                  &adv7511_connector_helper_funcs);
 899         drm_connector_attach_encoder(&adv->connector, bridge->encoder);
 900
 901         return 0;
 902 }
 903
 904 /* -----------------------------------------------------------------------------
 905  * DRM Bridge Operations
 906  */
 907
 908 static struct adv7511 *bridge_to_adv7511(struct drm_bridge *bridge)
 909 {
 910         return container_of(bridge, struct adv7511, bridge);
 911 }
 912
 913 static void adv7511_bridge_enable(struct drm_bridge *bridge)
 914 {
 915         struct adv7511 *adv = bridge_to_adv7511(bridge);
 916
 917         adv7511_power_on(adv);
 918 }
 919
 920 static void adv7511_bridge_disable(struct drm_bridge *bridge)
 921 {
 922         struct adv7511 *adv = bridge_to_adv7511(bridge);
 923
 924         adv7511_power_off(adv);
 925 }
 926
 927 static void adv7511_bridge_mode_set(struct drm_bridge *bridge,
 928                                     const struct drm_display_mode *mode,
 929                                     const struct drm_display_mode *adj_mode)
 930 {
 931         struct adv7511 *adv = bridge_to_adv7511(bridge);
 932
 933         adv7511_mode_set(adv, mode, adj_mode);
 934 }
 935
 936 static enum drm_mode_status adv7511_bridge_mode_valid(struct drm_bridge *bridge,
 937                                                       const struct drm_display_info *info,
 938                 const struct drm_display_mode *mode)
 939 {
 940         struct adv7511 *adv = bridge_to_adv7511(bridge);
 941
 942         if (adv->info->has_dsi)
 943                 return adv7533_mode_valid(adv, mode);
 944         else
 945                 return adv7511_mode_valid(adv, mode);
 946 }
 947
 948 static int adv7511_bridge_attach(struct drm_bridge *bridge,
 949                                  enum drm_bridge_attach_flags flags)
 950 {
 951         struct adv7511 *adv = bridge_to_adv7511(bridge);
 952         int ret = 0;
 953
 954         if (adv->next_bridge) {
 955                 ret = drm_bridge_attach(bridge->encoder, adv->next_bridge, bridge,
 956                                         flags | DRM_BRIDGE_ATTACH_NO_CONNECTOR);
 957                 if (ret)
 958                         return ret;
 959         }
 960
 961         if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) {
 962                 ret = adv7511_connector_init(adv);
 963                 if (ret < 0)
 964                         return ret;
 965         }
 966
 967         if (adv->i2c_main->irq)
 968                 regmap_write(adv->regmap, ADV7511_REG_INT_ENABLE(0),
 969                              ADV7511_INT0_HPD);
 970
 971         return ret;
 972 }
 973
 974 static enum drm_connector_status adv7511_bridge_detect(struct drm_bridge *bridge)
 975 {
 976         struct adv7511 *adv = bridge_to_adv7511(bridge);
 977
 978         return adv7511_detect(adv, NULL);
 979 }
 980
 981 static const struct drm_edid *adv7511_bridge_edid_read(struct drm_bridge *bridge,
 982                                                        struct drm_connector *connector)
 983 {
 984         struct adv7511 *adv = bridge_to_adv7511(bridge);
 985
 986         return adv7511_edid_read(adv, connector);
 987 }
 988
 989 static void adv7511_bridge_hpd_notify(struct drm_bridge *bridge,
 990                                       enum drm_connector_status status)
 991 {
 992         struct adv7511 *adv = bridge_to_adv7511(bridge);
 993
 994         if (status == connector_status_disconnected)
 995                 cec_phys_addr_invalidate(adv->cec_adap);
 996 }
 997
 998 static const struct drm_bridge_funcs adv7511_bridge_funcs = {
 999         .enable = adv7511_bridge_enable,
1000         .disable = adv7511_bridge_disable,
1001         .mode_set = adv7511_bridge_mode_set,
1002         .mode_valid = adv7511_bridge_mode_valid,
1003         .attach = adv7511_bridge_attach,
1004         .detect = adv7511_bridge_detect,
1005         .edid_read = adv7511_bridge_edid_read,
1006         .hpd_notify = adv7511_bridge_hpd_notify,
1007 };
1008
1009 /* -----------------------------------------------------------------------------
1010  * Probe & remove
1011  */
1012
1013 static const char * const adv7511_supply_names[] = {
1014         "avdd",
1015         "dvdd",
1016         "pvdd",
1017         "bgvdd",
1018         "dvdd-3v",
1019 };
1020
1021 static const char * const adv7533_supply_names[] = {
1022         "avdd",
1023         "dvdd",
1024         "pvdd",
1025         "a2vdd",
1026         "v3p3",
1027         "v1p2",
1028 };
1029
1030 static int adv7511_init_regulators(struct adv7511 *adv)
1031 {
1032         const char * const *supply_names = adv->info->supply_names;
1033         unsigned int num_supplies = adv->info->num_supplies;
1034         struct device *dev = &adv->i2c_main->dev;
1035         unsigned int i;
1036         int ret;
1037
1038         adv->supplies = devm_kcalloc(dev, num_supplies,
1039                                      sizeof(*adv->supplies), GFP_KERNEL);
1040         if (!adv->supplies)
1041                 return -ENOMEM;
1042
1043         for (i = 0; i < num_supplies; i++)
1044                 adv->supplies[i].supply = supply_names[i];
1045
1046         ret = devm_regulator_bulk_get(dev, num_supplies, adv->supplies);
1047         if (ret)
1048                 return ret;
1049
1050         return regulator_bulk_enable(num_supplies, adv->supplies);
1051 }
1052
1053 static void adv7511_uninit_regulators(struct adv7511 *adv)
1054 {
1055         regulator_bulk_disable(adv->info->num_supplies, adv->supplies);
1056 }
1057
1058 static bool adv7511_cec_register_volatile(struct device *dev, unsigned int reg)
1059 {
1060         struct i2c_client *i2c = to_i2c_client(dev);
1061         struct adv7511 *adv7511 = i2c_get_clientdata(i2c);
1062
1063         reg -= adv7511->info->reg_cec_offset;
1064
1065         switch (reg) {
1066         case ADV7511_REG_CEC_RX1_FRAME_HDR:
1067         case ADV7511_REG_CEC_RX1_FRAME_DATA0 ... ADV7511_REG_CEC_RX1_FRAME_DATA0 + 14:
1068         case ADV7511_REG_CEC_RX1_FRAME_LEN:
1069         case ADV7511_REG_CEC_RX2_FRAME_HDR:
1070         case ADV7511_REG_CEC_RX2_FRAME_DATA0 ... ADV7511_REG_CEC_RX2_FRAME_DATA0 + 14:
1071         case ADV7511_REG_CEC_RX2_FRAME_LEN:
1072         case ADV7511_REG_CEC_RX3_FRAME_HDR:
1073         case ADV7511_REG_CEC_RX3_FRAME_DATA0 ... ADV7511_REG_CEC_RX3_FRAME_DATA0 + 14:
1074         case ADV7511_REG_CEC_RX3_FRAME_LEN:
1075         case ADV7511_REG_CEC_RX_STATUS:
1076         case ADV7511_REG_CEC_RX_BUFFERS:
1077         case ADV7511_REG_CEC_TX_LOW_DRV_CNT:
1078                 return true;
1079         }
1080
1081         return false;
1082 }
1083
1084 static const struct regmap_config adv7511_cec_regmap_config = {
1085         .reg_bits = 8,
1086         .val_bits = 8,
1087
1088         .max_register = 0xff,
1089         .cache_type = REGCACHE_MAPLE,
1090         .volatile_reg = adv7511_cec_register_volatile,
1091 };
1092
1093 static int adv7511_init_cec_regmap(struct adv7511 *adv)
1094 {
1095         int ret;
1096
1097         adv->i2c_cec = i2c_new_ancillary_device(adv->i2c_main, "cec",
1098                                                 ADV7511_CEC_I2C_ADDR_DEFAULT);
1099         if (IS_ERR(adv->i2c_cec))
1100                 return PTR_ERR(adv->i2c_cec);
1101
1102         regmap_write(adv->regmap, ADV7511_REG_CEC_I2C_ADDR,
1103                      adv->i2c_cec->addr << 1);
1104
1105         i2c_set_clientdata(adv->i2c_cec, adv);
1106
1107         adv->regmap_cec = devm_regmap_init_i2c(adv->i2c_cec,
1108                                         &adv7511_cec_regmap_config);
1109         if (IS_ERR(adv->regmap_cec)) {
1110                 ret = PTR_ERR(adv->regmap_cec);
1111                 goto err;
1112         }
1113
1114         if (adv->info->reg_cec_offset == ADV7533_REG_CEC_OFFSET) {
1115                 ret = adv7533_patch_cec_registers(adv);
1116                 if (ret)
1117                         goto err;
1118         }
1119
1120         return 0;
1121 err:
1122         i2c_unregister_device(adv->i2c_cec);
1123         return ret;
1124 }
1125
1126 static int adv7511_parse_dt(struct device_node *np,
1127                             struct adv7511_link_config *config)
1128 {
1129         const char *str;
1130         int ret;
1131
1132         of_property_read_u32(np, "adi,input-depth", &config->input_color_depth);
1133         if (config->input_color_depth != 8 && config->input_color_depth != 10 &&
1134             config->input_color_depth != 12)
1135                 return -EINVAL;
1136
1137         ret = of_property_read_string(np, "adi,input-colorspace", &str);
1138         if (ret < 0)
1139                 return ret;
1140
1141         if (!strcmp(str, "rgb"))
1142                 config->input_colorspace = HDMI_COLORSPACE_RGB;
1143         else if (!strcmp(str, "yuv422"))
1144                 config->input_colorspace = HDMI_COLORSPACE_YUV422;
1145         else if (!strcmp(str, "yuv444"))
1146                 config->input_colorspace = HDMI_COLORSPACE_YUV444;
1147         else
1148                 return -EINVAL;
1149
1150         ret = of_property_read_string(np, "adi,input-clock", &str);
1151         if (ret < 0)
1152                 return ret;
1153
1154         if (!strcmp(str, "1x"))
1155                 config->input_clock = ADV7511_INPUT_CLOCK_1X;
1156         else if (!strcmp(str, "2x"))
1157                 config->input_clock = ADV7511_INPUT_CLOCK_2X;
1158         else if (!strcmp(str, "ddr"))
1159                 config->input_clock = ADV7511_INPUT_CLOCK_DDR;
1160         else
1161                 return -EINVAL;
1162
1163         if (config->input_colorspace == HDMI_COLORSPACE_YUV422 ||
1164             config->input_clock != ADV7511_INPUT_CLOCK_1X) {
1165                 ret = of_property_read_u32(np, "adi,input-style",
1166                                            &config->input_style);
1167                 if (ret)
1168                         return ret;
1169
1170                 if (config->input_style < 1 || config->input_style > 3)
1171                         return -EINVAL;
1172
1173                 ret = of_property_read_string(np, "adi,input-justification",
1174                                               &str);
1175                 if (ret < 0)
1176                         return ret;
1177
1178                 if (!strcmp(str, "left"))
1179                         config->input_justification =
1180                                 ADV7511_INPUT_JUSTIFICATION_LEFT;
1181                 else if (!strcmp(str, "evenly"))
1182                         config->input_justification =
1183                                 ADV7511_INPUT_JUSTIFICATION_EVENLY;
1184                 else if (!strcmp(str, "right"))
1185                         config->input_justification =
1186                                 ADV7511_INPUT_JUSTIFICATION_RIGHT;
1187                 else
1188                         return -EINVAL;
1189
1190         } else {
1191                 config->input_style = 1;
1192                 config->input_justification = ADV7511_INPUT_JUSTIFICATION_LEFT;
1193         }
1194
1195         of_property_read_u32(np, "adi,clock-delay", &config->clock_delay);
1196         if (config->clock_delay < -1200 || config->clock_delay > 1600)
1197                 return -EINVAL;
1198
1199         config->embedded_sync = of_property_read_bool(np, "adi,embedded-sync");
1200
1201         /* Hardcode the sync pulse configurations for now. */
1202         config->sync_pulse = ADV7511_INPUT_SYNC_PULSE_NONE;
1203         config->vsync_polarity = ADV7511_SYNC_POLARITY_PASSTHROUGH;
1204         config->hsync_polarity = ADV7511_SYNC_POLARITY_PASSTHROUGH;
1205
1206         return 0;
1207 }
1208
1209 static int adv7511_probe(struct i2c_client *i2c)
1210 {
1211         struct adv7511_link_config link_config;
1212         struct adv7511 *adv7511;
1213         struct device *dev = &i2c->dev;
1214         unsigned int val;
1215         int ret;
1216
1217         if (!dev->of_node)
1218                 return -EINVAL;
1219
1220         adv7511 = devm_kzalloc(dev, sizeof(*adv7511), GFP_KERNEL);
1221         if (!adv7511)
1222                 return -ENOMEM;
1223
1224         adv7511->i2c_main = i2c;
1225         adv7511->powered = false;
1226         adv7511->status = connector_status_disconnected;
1227         adv7511->info = i2c_get_match_data(i2c);
1228
1229         memset(&link_config, 0, sizeof(link_config));
1230
1231         ret = drm_of_find_panel_or_bridge(dev->of_node, 1, -1, NULL,
1232                                           &adv7511->next_bridge);
1233         if (ret && ret != -ENODEV)
1234                 return ret;
1235
1236         if (adv7511->info->link_config)
1237                 ret = adv7511_parse_dt(dev->of_node, &link_config);
1238         else
1239                 ret = adv7533_parse_dt(dev->of_node, adv7511);
1240         if (ret)
1241                 return ret;
1242
1243         ret = adv7511_init_regulators(adv7511);
1244         if (ret) {
1245                 dev_err_probe(dev, ret, "failed to init regulators\n");
1246                 goto err_of_node_put;
1247         }
1248
1249         /*
1250          * The power down GPIO is optional. If present, toggle it from active to
1251          * inactive to wake up the encoder.
1252          */
1253         adv7511->gpio_pd = devm_gpiod_get_optional(dev, "pd", GPIOD_OUT_HIGH);
1254         if (IS_ERR(adv7511->gpio_pd)) {
1255                 ret = PTR_ERR(adv7511->gpio_pd);
1256                 goto uninit_regulators;
1257         }
1258
1259         if (adv7511->gpio_pd) {
1260                 usleep_range(5000, 6000);
1261                 gpiod_set_value_cansleep(adv7511->gpio_pd, 0);
1262         }
1263
1264         adv7511->regmap = devm_regmap_init_i2c(i2c, &adv7511_regmap_config);
1265         if (IS_ERR(adv7511->regmap)) {
1266                 ret = PTR_ERR(adv7511->regmap);
1267                 goto uninit_regulators;
1268         }
1269
1270         ret = regmap_read(adv7511->regmap, ADV7511_REG_CHIP_REVISION, &val);
1271         if (ret)
1272                 goto uninit_regulators;
1273         dev_dbg(dev, "Rev. %d\n", val);
1274
1275         if (adv7511->info->type == ADV7511)
1276                 ret = regmap_register_patch(adv7511->regmap,
1277                                             adv7511_fixed_registers,
1278                                             ARRAY_SIZE(adv7511_fixed_registers));
1279         else
1280                 ret = adv7533_patch_registers(adv7511);
1281         if (ret)
1282                 goto uninit_regulators;
1283
1284         adv7511_packet_disable(adv7511, 0xffff);
1285
1286         adv7511->i2c_edid = i2c_new_ancillary_device(i2c, "edid",
1287                                         ADV7511_EDID_I2C_ADDR_DEFAULT);
1288         if (IS_ERR(adv7511->i2c_edid)) {
1289                 ret = PTR_ERR(adv7511->i2c_edid);
1290                 goto uninit_regulators;
1291         }
1292
1293         regmap_write(adv7511->regmap, ADV7511_REG_EDID_I2C_ADDR,
1294                      adv7511->i2c_edid->addr << 1);
1295
1296         adv7511->i2c_packet = i2c_new_ancillary_device(i2c, "packet",
1297                                         ADV7511_PACKET_I2C_ADDR_DEFAULT);
1298         if (IS_ERR(adv7511->i2c_packet)) {
1299                 ret = PTR_ERR(adv7511->i2c_packet);
1300                 goto err_i2c_unregister_edid;
1301         }
1302
1303         regmap_write(adv7511->regmap, ADV7511_REG_PACKET_I2C_ADDR,
1304                      adv7511->i2c_packet->addr << 1);
1305
1306         ret = adv7511_init_cec_regmap(adv7511);
1307         if (ret)
1308                 goto err_i2c_unregister_packet;
1309
1310         INIT_WORK(&adv7511->hpd_work, adv7511_hpd_work);
1311
1312         adv7511_power_off(adv7511);
1313
1314         i2c_set_clientdata(i2c, adv7511);
1315
1316         if (adv7511->info->link_config)
1317                 adv7511_set_link_config(adv7511, &link_config);
1318
1319         ret = adv7511_cec_init(dev, adv7511);
1320         if (ret)
1321                 goto err_unregister_cec;
1322
1323         adv7511->bridge.funcs = &adv7511_bridge_funcs;
1324         adv7511->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID;
1325         if (adv7511->i2c_main->irq)
1326                 adv7511->bridge.ops |= DRM_BRIDGE_OP_HPD;
1327
1328         adv7511->bridge.of_node = dev->of_node;
1329         adv7511->bridge.type = DRM_MODE_CONNECTOR_HDMIA;
1330
1331         drm_bridge_add(&adv7511->bridge);
1332
1333         adv7511_audio_init(dev, adv7511);
1334
1335         if (i2c->irq) {
1336                 init_waitqueue_head(&adv7511->wq);
1337
1338                 ret = devm_request_threaded_irq(dev, i2c->irq, NULL,
1339                                                 adv7511_irq_handler,
1340                                                 IRQF_ONESHOT | IRQF_SHARED,
1341                                                 dev_name(dev),
1342                                                 adv7511);
1343                 if (ret)
1344                         goto err_unregister_audio;
1345         }
1346
1347         if (adv7511->info->has_dsi) {
1348                 ret = adv7533_attach_dsi(adv7511);
1349                 if (ret)
1350                         goto err_unregister_audio;
1351         }
1352
1353         return 0;
1354
1355 err_unregister_audio:
1356         adv7511_audio_exit(adv7511);
1357         drm_bridge_remove(&adv7511->bridge);
1358 err_unregister_cec:
1359         cec_unregister_adapter(adv7511->cec_adap);
1360         i2c_unregister_device(adv7511->i2c_cec);
1361         clk_disable_unprepare(adv7511->cec_clk);
1362 err_i2c_unregister_packet:
1363         i2c_unregister_device(adv7511->i2c_packet);
1364 err_i2c_unregister_edid:
1365         i2c_unregister_device(adv7511->i2c_edid);
1366 uninit_regulators:
1367         adv7511_uninit_regulators(adv7511);
1368 err_of_node_put:
1369         of_node_put(adv7511->host_node);
1370
1371         return ret;
1372 }
1373
1374 static void adv7511_remove(struct i2c_client *i2c)
1375 {
1376         struct adv7511 *adv7511 = i2c_get_clientdata(i2c);
1377
1378         of_node_put(adv7511->host_node);
1379
1380         adv7511_uninit_regulators(adv7511);
1381
1382         drm_bridge_remove(&adv7511->bridge);
1383
1384         adv7511_audio_exit(adv7511);
1385
1386         cec_unregister_adapter(adv7511->cec_adap);
1387         i2c_unregister_device(adv7511->i2c_cec);
1388         clk_disable_unprepare(adv7511->cec_clk);
1389
1390         i2c_unregister_device(adv7511->i2c_packet);
1391         i2c_unregister_device(adv7511->i2c_edid);
1392 }
1393
1394 static const struct adv7511_chip_info adv7511_chip_info = {
1395         .type = ADV7511,
1396         .supply_names = adv7511_supply_names,
1397         .num_supplies = ARRAY_SIZE(adv7511_supply_names),
1398         .link_config = true,
1399 };
1400
1401 static const struct adv7511_chip_info adv7533_chip_info = {
1402         .type = ADV7533,
1403         .max_mode_clock_khz = 80000,
1404         .max_lane_freq_khz = 800000,
1405         .supply_names = adv7533_supply_names,
1406         .num_supplies = ARRAY_SIZE(adv7533_supply_names),
1407         .reg_cec_offset = ADV7533_REG_CEC_OFFSET,
1408         .has_dsi = true,
1409 };
1410
1411 static const struct adv7511_chip_info adv7535_chip_info = {
1412         .type = ADV7535,
1413         .max_mode_clock_khz = 148500,
1414         .max_lane_freq_khz = 891000,
1415         .supply_names = adv7533_supply_names,
1416         .num_supplies = ARRAY_SIZE(adv7533_supply_names),
1417         .reg_cec_offset = ADV7533_REG_CEC_OFFSET,
1418         .has_dsi = true,
1419         .hpd_override_enable = true,
1420 };
1421
1422 static const struct i2c_device_id adv7511_i2c_ids[] = {
1423         { "adv7511", (kernel_ulong_t)&adv7511_chip_info },
1424         { "adv7511w", (kernel_ulong_t)&adv7511_chip_info },
1425         { "adv7513", (kernel_ulong_t)&adv7511_chip_info },
1426         { "adv7533", (kernel_ulong_t)&adv7533_chip_info },
1427         { "adv7535", (kernel_ulong_t)&adv7535_chip_info },
1428         { }
1429 };
1430 MODULE_DEVICE_TABLE(i2c, adv7511_i2c_ids);
1431
1432 static const struct of_device_id adv7511_of_ids[] = {
1433         { .compatible = "adi,adv7511", .data = &adv7511_chip_info },
1434         { .compatible = "adi,adv7511w", .data = &adv7511_chip_info },
1435         { .compatible = "adi,adv7513", .data = &adv7511_chip_info },
1436         { .compatible = "adi,adv7533", .data = &adv7533_chip_info },
1437         { .compatible = "adi,adv7535", .data = &adv7535_chip_info },
1438         { }
1439 };
1440 MODULE_DEVICE_TABLE(of, adv7511_of_ids);
1441
1442 static struct mipi_dsi_driver adv7533_dsi_driver = {
1443         .driver.name = "adv7533",
1444 };
1445
1446 static struct i2c_driver adv7511_driver = {
1447         .driver = {
1448                 .name = "adv7511",
1449                 .of_match_table = adv7511_of_ids,
1450         },
1451         .id_table = adv7511_i2c_ids,
1452         .probe = adv7511_probe,
1453         .remove = adv7511_remove,
1454 };
1455
1456 static int __init adv7511_init(void)
1457 {
1458         int ret;
1459
1460         if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) {
1461                 ret = mipi_dsi_driver_register(&adv7533_dsi_driver);
1462                 if (ret)
1463                         return ret;
1464         }
1465
1466         ret = i2c_add_driver(&adv7511_driver);
1467         if (ret) {
1468                 if (IS_ENABLED(CONFIG_DRM_MIPI_DSI))
1469                         mipi_dsi_driver_unregister(&adv7533_dsi_driver);
1470         }
1471
1472         return ret;
1473 }
1474 module_init(adv7511_init);
1475
1476 static void __exit adv7511_exit(void)
1477 {
1478         i2c_del_driver(&adv7511_driver);
1479
1480         if (IS_ENABLED(CONFIG_DRM_MIPI_DSI))
1481                 mipi_dsi_driver_unregister(&adv7533_dsi_driver);
1482 }
1483 module_exit(adv7511_exit);
1484
1485 MODULE_AUTHOR("Lars-Peter Clausen <[email protected]>");
1486 MODULE_DESCRIPTION("ADV7511 HDMI transmitter driver");
1487 MODULE_LICENSE("GPL");