drivers/gpu/drm/msm/hdmi/hdmi.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright (c) 2014 The Linux Foundation. All rights reserved.
   4  * Copyright (C) 2013 Red Hat
   5  * Author: Rob Clark <robdclark@gmail.com>
   6  */
   7
   8 #include <linux/of_irq.h>
   9 #include <linux/of_gpio.h>
  10
  11 #include <sound/hdmi-codec.h>
  12 #include "hdmi.h"
  13
  14 void msm_hdmi_set_mode(struct hdmi *hdmi, bool power_on)
  15 {
  16         uint32_t ctrl = 0;
  17         unsigned long flags;
  18
  19         spin_lock_irqsave(&hdmi->reg_lock, flags);
  20         if (power_on) {
  21                 ctrl |= HDMI_CTRL_ENABLE;
  22                 if (!hdmi->hdmi_mode) {
  23                         ctrl |= HDMI_CTRL_HDMI;
  24                         hdmi_write(hdmi, REG_HDMI_CTRL, ctrl);
  25                         ctrl &= ~HDMI_CTRL_HDMI;
  26                 } else {
  27                         ctrl |= HDMI_CTRL_HDMI;
  28                 }
  29         } else {
  30                 ctrl = HDMI_CTRL_HDMI;
  31         }
  32
  33         hdmi_write(hdmi, REG_HDMI_CTRL, ctrl);
  34         spin_unlock_irqrestore(&hdmi->reg_lock, flags);
  35         DBG("HDMI Core: %s, HDMI_CTRL=0x%08x",
  36                         power_on ? "Enable" : "Disable", ctrl);
  37 }
  38
  39 static irqreturn_t msm_hdmi_irq(int irq, void *dev_id)
  40 {
  41         struct hdmi *hdmi = dev_id;
  42
  43         /* Process HPD: */
  44         msm_hdmi_connector_irq(hdmi->connector);
  45
  46         /* Process DDC: */
  47         msm_hdmi_i2c_irq(hdmi->i2c);
  48
  49         /* Process HDCP: */
  50         if (hdmi->hdcp_ctrl)
  51                 msm_hdmi_hdcp_irq(hdmi->hdcp_ctrl);
  52
  53         /* TODO audio.. */
  54
  55         return IRQ_HANDLED;
  56 }
  57
  58 static void msm_hdmi_destroy(struct hdmi *hdmi)
  59 {
  60         /*
  61          * at this point, hpd has been disabled,
  62          * after flush workq, it's safe to deinit hdcp
  63          */
  64         if (hdmi->workq) {
  65                 flush_workqueue(hdmi->workq);
  66                 destroy_workqueue(hdmi->workq);
  67         }
  68         msm_hdmi_hdcp_destroy(hdmi);
  69
  70         if (hdmi->phy_dev) {
  71                 put_device(hdmi->phy_dev);
  72                 hdmi->phy = NULL;
  73                 hdmi->phy_dev = NULL;
  74         }
  75
  76         if (hdmi->i2c)
  77                 msm_hdmi_i2c_destroy(hdmi->i2c);
  78
  79         platform_set_drvdata(hdmi->pdev, NULL);
  80 }
  81
  82 static int msm_hdmi_get_phy(struct hdmi *hdmi)
  83 {
  84         struct platform_device *pdev = hdmi->pdev;
  85         struct platform_device *phy_pdev;
  86         struct device_node *phy_node;
  87
  88         phy_node = of_parse_phandle(pdev->dev.of_node, "phys", 0);
  89         if (!phy_node) {
  90                 DRM_DEV_ERROR(&pdev->dev, "cannot find phy device\n");
  91                 return -ENXIO;
  92         }
  93
  94         phy_pdev = of_find_device_by_node(phy_node);
  95         if (phy_pdev)
  96                 hdmi->phy = platform_get_drvdata(phy_pdev);
  97
  98         of_node_put(phy_node);
  99
 100         if (!phy_pdev) {
 101                 DRM_DEV_ERROR(&pdev->dev, "phy driver is not ready\n");
 102                 return -EPROBE_DEFER;
 103         }
 104         if (!hdmi->phy) {
 105                 DRM_DEV_ERROR(&pdev->dev, "phy driver is not ready\n");
 106                 put_device(&phy_pdev->dev);
 107                 return -EPROBE_DEFER;
 108         }
 109
 110         hdmi->phy_dev = get_device(&phy_pdev->dev);
 111
 112         return 0;
 113 }
 114
 115 /* construct hdmi at bind/probe time, grab all the resources.  If
 116  * we are to EPROBE_DEFER we want to do it here, rather than later
 117  * at modeset_init() time
 118  */
 119 static struct hdmi *msm_hdmi_init(struct platform_device *pdev)
 120 {
 121         struct hdmi_platform_config *config = pdev->dev.platform_data;
 122         struct hdmi *hdmi = NULL;
 123         struct resource *res;
 124         int i, ret;
 125
 126         hdmi = devm_kzalloc(&pdev->dev, sizeof(*hdmi), GFP_KERNEL);
 127         if (!hdmi) {
 128                 ret = -ENOMEM;
 129                 goto fail;
 130         }
 131
 132         hdmi->pdev = pdev;
 133         hdmi->config = config;
 134         spin_lock_init(&hdmi->reg_lock);
 135
 136         hdmi->mmio = msm_ioremap(pdev, config->mmio_name, "HDMI");
 137         if (IS_ERR(hdmi->mmio)) {
 138                 ret = PTR_ERR(hdmi->mmio);
 139                 goto fail;
 140         }
 141
 142         /* HDCP needs physical address of hdmi register */
 143         res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
 144                 config->mmio_name);
 145         hdmi->mmio_phy_addr = res->start;
 146
 147         hdmi->qfprom_mmio = msm_ioremap(pdev,
 148                 config->qfprom_mmio_name, "HDMI_QFPROM");
 149         if (IS_ERR(hdmi->qfprom_mmio)) {
 150                 DRM_DEV_INFO(&pdev->dev, "can't find qfprom resource\n");
 151                 hdmi->qfprom_mmio = NULL;
 152         }
 153
 154         hdmi->hpd_regs = devm_kcalloc(&pdev->dev,
 155                                       config->hpd_reg_cnt,
 156                                       sizeof(hdmi->hpd_regs[0]),
 157                                       GFP_KERNEL);
 158         if (!hdmi->hpd_regs) {
 159                 ret = -ENOMEM;
 160                 goto fail;
 161         }
 162         for (i = 0; i < config->hpd_reg_cnt; i++) {
 163                 struct regulator *reg;
 164
 165                 reg = devm_regulator_get(&pdev->dev,
 166                                 config->hpd_reg_names[i]);
 167                 if (IS_ERR(reg)) {
 168                         ret = PTR_ERR(reg);
 169                         DRM_DEV_ERROR(&pdev->dev, "failed to get hpd regulator: %s (%d)\n",
 170                                         config->hpd_reg_names[i], ret);
 171                         goto fail;
 172                 }
 173
 174                 hdmi->hpd_regs[i] = reg;
 175         }
 176
 177         hdmi->pwr_regs = devm_kcalloc(&pdev->dev,
 178                                       config->pwr_reg_cnt,
 179                                       sizeof(hdmi->pwr_regs[0]),
 180                                       GFP_KERNEL);
 181         if (!hdmi->pwr_regs) {
 182                 ret = -ENOMEM;
 183                 goto fail;
 184         }
 185         for (i = 0; i < config->pwr_reg_cnt; i++) {
 186                 struct regulator *reg;
 187
 188                 reg = devm_regulator_get(&pdev->dev,
 189                                 config->pwr_reg_names[i]);
 190                 if (IS_ERR(reg)) {
 191                         ret = PTR_ERR(reg);
 192                         DRM_DEV_ERROR(&pdev->dev, "failed to get pwr regulator: %s (%d)\n",
 193                                         config->pwr_reg_names[i], ret);
 194                         goto fail;
 195                 }
 196
 197                 hdmi->pwr_regs[i] = reg;
 198         }
 199
 200         hdmi->hpd_clks = devm_kcalloc(&pdev->dev,
 201                                       config->hpd_clk_cnt,
 202                                       sizeof(hdmi->hpd_clks[0]),
 203                                       GFP_KERNEL);
 204         if (!hdmi->hpd_clks) {
 205                 ret = -ENOMEM;
 206                 goto fail;
 207         }
 208         for (i = 0; i < config->hpd_clk_cnt; i++) {
 209                 struct clk *clk;
 210
 211                 clk = msm_clk_get(pdev, config->hpd_clk_names[i]);
 212                 if (IS_ERR(clk)) {
 213                         ret = PTR_ERR(clk);
 214                         DRM_DEV_ERROR(&pdev->dev, "failed to get hpd clk: %s (%d)\n",
 215                                         config->hpd_clk_names[i], ret);
 216                         goto fail;
 217                 }
 218
 219                 hdmi->hpd_clks[i] = clk;
 220         }
 221
 222         hdmi->pwr_clks = devm_kcalloc(&pdev->dev,
 223                                       config->pwr_clk_cnt,
 224                                       sizeof(hdmi->pwr_clks[0]),
 225                                       GFP_KERNEL);
 226         if (!hdmi->pwr_clks) {
 227                 ret = -ENOMEM;
 228                 goto fail;
 229         }
 230         for (i = 0; i < config->pwr_clk_cnt; i++) {
 231                 struct clk *clk;
 232
 233                 clk = msm_clk_get(pdev, config->pwr_clk_names[i]);
 234                 if (IS_ERR(clk)) {
 235                         ret = PTR_ERR(clk);
 236                         DRM_DEV_ERROR(&pdev->dev, "failed to get pwr clk: %s (%d)\n",
 237                                         config->pwr_clk_names[i], ret);
 238                         goto fail;
 239                 }
 240
 241                 hdmi->pwr_clks[i] = clk;
 242         }
 243
 244         pm_runtime_enable(&pdev->dev);
 245
 246         hdmi->workq = alloc_ordered_workqueue("msm_hdmi", 0);
 247
 248         hdmi->i2c = msm_hdmi_i2c_init(hdmi);
 249         if (IS_ERR(hdmi->i2c)) {
 250                 ret = PTR_ERR(hdmi->i2c);
 251                 DRM_DEV_ERROR(&pdev->dev, "failed to get i2c: %d\n", ret);
 252                 hdmi->i2c = NULL;
 253                 goto fail;
 254         }
 255
 256         ret = msm_hdmi_get_phy(hdmi);
 257         if (ret) {
 258                 DRM_DEV_ERROR(&pdev->dev, "failed to get phy\n");
 259                 goto fail;
 260         }
 261
 262         hdmi->hdcp_ctrl = msm_hdmi_hdcp_init(hdmi);
 263         if (IS_ERR(hdmi->hdcp_ctrl)) {
 264                 dev_warn(&pdev->dev, "failed to init hdcp: disabled\n");
 265                 hdmi->hdcp_ctrl = NULL;
 266         }
 267
 268         return hdmi;
 269
 270 fail:
 271         if (hdmi)
 272                 msm_hdmi_destroy(hdmi);
 273
 274         return ERR_PTR(ret);
 275 }
 276
 277 /* Second part of initialization, the drm/kms level modeset_init,
 278  * constructs/initializes mode objects, etc, is called from master
 279  * driver (not hdmi sub-device's probe/bind!)
 280  *
 281  * Any resource (regulator/clk/etc) which could be missing at boot
 282  * should be handled in msm_hdmi_init() so that failure happens from
 283  * hdmi sub-device's probe.
 284  */
 285 int msm_hdmi_modeset_init(struct hdmi *hdmi,
 286                 struct drm_device *dev, struct drm_encoder *encoder)
 287 {
 288         struct msm_drm_private *priv = dev->dev_private;
 289         struct platform_device *pdev = hdmi->pdev;
 290         int ret;
 291
 292         hdmi->dev = dev;
 293         hdmi->encoder = encoder;
 294
 295         hdmi_audio_infoframe_init(&hdmi->audio.infoframe);
 296
 297         hdmi->bridge = msm_hdmi_bridge_init(hdmi);
 298         if (IS_ERR(hdmi->bridge)) {
 299                 ret = PTR_ERR(hdmi->bridge);
 300                 DRM_DEV_ERROR(dev->dev, "failed to create HDMI bridge: %d\n", ret);
 301                 hdmi->bridge = NULL;
 302                 goto fail;
 303         }
 304
 305         hdmi->connector = msm_hdmi_connector_init(hdmi);
 306         if (IS_ERR(hdmi->connector)) {
 307                 ret = PTR_ERR(hdmi->connector);
 308                 DRM_DEV_ERROR(dev->dev, "failed to create HDMI connector: %d\n", ret);
 309                 hdmi->connector = NULL;
 310                 goto fail;
 311         }
 312
 313         hdmi->irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
 314         if (hdmi->irq < 0) {
 315                 ret = hdmi->irq;
 316                 DRM_DEV_ERROR(dev->dev, "failed to get irq: %d\n", ret);
 317                 goto fail;
 318         }
 319
 320         ret = devm_request_irq(&pdev->dev, hdmi->irq,
 321                         msm_hdmi_irq, IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
 322                         "hdmi_isr", hdmi);
 323         if (ret < 0) {
 324                 DRM_DEV_ERROR(dev->dev, "failed to request IRQ%u: %d\n",
 325                                 hdmi->irq, ret);
 326                 goto fail;
 327         }
 328
 329         ret = msm_hdmi_hpd_enable(hdmi->connector);
 330         if (ret < 0) {
 331                 DRM_DEV_ERROR(&hdmi->pdev->dev, "failed to enable HPD: %d\n", ret);
 332                 goto fail;
 333         }
 334
 335         priv->bridges[priv->num_bridges++]       = hdmi->bridge;
 336         priv->connectors[priv->num_connectors++] = hdmi->connector;
 337
 338         platform_set_drvdata(pdev, hdmi);
 339
 340         return 0;
 341
 342 fail:
 343         /* bridge is normally destroyed by drm: */
 344         if (hdmi->bridge) {
 345                 msm_hdmi_bridge_destroy(hdmi->bridge);
 346                 hdmi->bridge = NULL;
 347         }
 348         if (hdmi->connector) {
 349                 hdmi->connector->funcs->destroy(hdmi->connector);
 350                 hdmi->connector = NULL;
 351         }
 352
 353         return ret;
 354 }
 355
 356 /*
 357  * The hdmi device:
 358  */
 359
 360 #define HDMI_CFG(item, entry) \
 361         .item ## _names = item ##_names_ ## entry, \
 362         .item ## _cnt   = ARRAY_SIZE(item ## _names_ ## entry)
 363
 364 static const char *pwr_reg_names_none[] = {};
 365 static const char *hpd_reg_names_none[] = {};
 366
 367 static struct hdmi_platform_config hdmi_tx_8660_config;
 368
 369 static const char *hpd_reg_names_8960[] = {"core-vdda", "hdmi-mux"};
 370 static const char *hpd_clk_names_8960[] = {"core", "master_iface", "slave_iface"};
 371
 372 static struct hdmi_platform_config hdmi_tx_8960_config = {
 373                 HDMI_CFG(hpd_reg, 8960),
 374                 HDMI_CFG(hpd_clk, 8960),
 375 };
 376
 377 static const char *pwr_reg_names_8x74[] = {"core-vdda", "core-vcc"};
 378 static const char *hpd_reg_names_8x74[] = {"hpd-gdsc", "hpd-5v"};
 379 static const char *pwr_clk_names_8x74[] = {"extp", "alt_iface"};
 380 static const char *hpd_clk_names_8x74[] = {"iface", "core", "mdp_core"};
 381 static unsigned long hpd_clk_freq_8x74[] = {0, 19200000, 0};
 382
 383 static struct hdmi_platform_config hdmi_tx_8974_config = {
 384                 HDMI_CFG(pwr_reg, 8x74),
 385                 HDMI_CFG(hpd_reg, 8x74),
 386                 HDMI_CFG(pwr_clk, 8x74),
 387                 HDMI_CFG(hpd_clk, 8x74),
 388                 .hpd_freq      = hpd_clk_freq_8x74,
 389 };
 390
 391 static const char *hpd_reg_names_8084[] = {"hpd-gdsc", "hpd-5v", "hpd-5v-en"};
 392
 393 static struct hdmi_platform_config hdmi_tx_8084_config = {
 394                 HDMI_CFG(pwr_reg, 8x74),
 395                 HDMI_CFG(hpd_reg, 8084),
 396                 HDMI_CFG(pwr_clk, 8x74),
 397                 HDMI_CFG(hpd_clk, 8x74),
 398                 .hpd_freq      = hpd_clk_freq_8x74,
 399 };
 400
 401 static struct hdmi_platform_config hdmi_tx_8994_config = {
 402                 HDMI_CFG(pwr_reg, 8x74),
 403                 HDMI_CFG(hpd_reg, none),
 404                 HDMI_CFG(pwr_clk, 8x74),
 405                 HDMI_CFG(hpd_clk, 8x74),
 406                 .hpd_freq      = hpd_clk_freq_8x74,
 407 };
 408
 409 static struct hdmi_platform_config hdmi_tx_8996_config = {
 410                 HDMI_CFG(pwr_reg, none),
 411                 HDMI_CFG(hpd_reg, none),
 412                 HDMI_CFG(pwr_clk, 8x74),
 413                 HDMI_CFG(hpd_clk, 8x74),
 414                 .hpd_freq      = hpd_clk_freq_8x74,
 415 };
 416
 417 static const struct {
 418         const char *name;
 419         const bool output;
 420         const int value;
 421         const char *label;
 422 } msm_hdmi_gpio_pdata[] = {
 423         { "qcom,hdmi-tx-ddc-clk", true, 1, "HDMI_DDC_CLK" },
 424         { "qcom,hdmi-tx-ddc-data", true, 1, "HDMI_DDC_DATA" },
 425         { "qcom,hdmi-tx-hpd", false, 1, "HDMI_HPD" },
 426         { "qcom,hdmi-tx-mux-en", true, 1, "HDMI_MUX_EN" },
 427         { "qcom,hdmi-tx-mux-sel", true, 0, "HDMI_MUX_SEL" },
 428         { "qcom,hdmi-tx-mux-lpm", true, 1, "HDMI_MUX_LPM" },
 429 };
 430
 431 /*
 432  * HDMI audio codec callbacks
 433  */
 434 static int msm_hdmi_audio_hw_params(struct device *dev, void *data,
 435                                     struct hdmi_codec_daifmt *daifmt,
 436                                     struct hdmi_codec_params *params)
 437 {
 438         struct hdmi *hdmi = dev_get_drvdata(dev);
 439         unsigned int chan;
 440         unsigned int channel_allocation = 0;
 441         unsigned int rate;
 442         unsigned int level_shift  = 0; /* 0dB */
 443         bool down_mix = false;
 444
 445         DRM_DEV_DEBUG(dev, "%u Hz, %d bit, %d channels\n", params->sample_rate,
 446                  params->sample_width, params->cea.channels);
 447
 448         switch (params->cea.channels) {
 449         case 2:
 450                 /* FR and FL speakers */
 451                 channel_allocation  = 0;
 452                 chan = MSM_HDMI_AUDIO_CHANNEL_2;
 453                 break;
 454         case 4:
 455                 /* FC, LFE, FR and FL speakers */
 456                 channel_allocation  = 0x3;
 457                 chan = MSM_HDMI_AUDIO_CHANNEL_4;
 458                 break;
 459         case 6:
 460                 /* RR, RL, FC, LFE, FR and FL speakers */
 461                 channel_allocation  = 0x0B;
 462                 chan = MSM_HDMI_AUDIO_CHANNEL_6;
 463                 break;
 464         case 8:
 465                 /* FRC, FLC, RR, RL, FC, LFE, FR and FL speakers */
 466                 channel_allocation  = 0x1F;
 467                 chan = MSM_HDMI_AUDIO_CHANNEL_8;
 468                 break;
 469         default:
 470                 return -EINVAL;
 471         }
 472
 473         switch (params->sample_rate) {
 474         case 32000:
 475                 rate = HDMI_SAMPLE_RATE_32KHZ;
 476                 break;
 477         case 44100:
 478                 rate = HDMI_SAMPLE_RATE_44_1KHZ;
 479                 break;
 480         case 48000:
 481                 rate = HDMI_SAMPLE_RATE_48KHZ;
 482                 break;
 483         case 88200:
 484                 rate = HDMI_SAMPLE_RATE_88_2KHZ;
 485                 break;
 486         case 96000:
 487                 rate = HDMI_SAMPLE_RATE_96KHZ;
 488                 break;
 489         case 176400:
 490                 rate = HDMI_SAMPLE_RATE_176_4KHZ;
 491                 break;
 492         case 192000:
 493                 rate = HDMI_SAMPLE_RATE_192KHZ;
 494                 break;
 495         default:
 496                 DRM_DEV_ERROR(dev, "rate[%d] not supported!\n",
 497                         params->sample_rate);
 498                 return -EINVAL;
 499         }
 500
 501         msm_hdmi_audio_set_sample_rate(hdmi, rate);
 502         msm_hdmi_audio_info_setup(hdmi, 1, chan, channel_allocation,
 503                               level_shift, down_mix);
 504
 505         return 0;
 506 }
 507
 508 static void msm_hdmi_audio_shutdown(struct device *dev, void *data)
 509 {
 510         struct hdmi *hdmi = dev_get_drvdata(dev);
 511
 512         msm_hdmi_audio_info_setup(hdmi, 0, 0, 0, 0, 0);
 513 }
 514
 515 static const struct hdmi_codec_ops msm_hdmi_audio_codec_ops = {
 516         .hw_params = msm_hdmi_audio_hw_params,
 517         .audio_shutdown = msm_hdmi_audio_shutdown,
 518 };
 519
 520 static struct hdmi_codec_pdata codec_data = {
 521         .ops = &msm_hdmi_audio_codec_ops,
 522         .max_i2s_channels = 8,
 523         .i2s = 1,
 524 };
 525
 526 static int msm_hdmi_register_audio_driver(struct hdmi *hdmi, struct device *dev)
 527 {
 528         hdmi->audio_pdev = platform_device_register_data(dev,
 529                                                          HDMI_CODEC_DRV_NAME,
 530                                                          PLATFORM_DEVID_AUTO,
 531                                                          &codec_data,
 532                                                          sizeof(codec_data));
 533         return PTR_ERR_OR_ZERO(hdmi->audio_pdev);
 534 }
 535
 536 static int msm_hdmi_bind(struct device *dev, struct device *master, void *data)
 537 {
 538         struct drm_device *drm = dev_get_drvdata(master);
 539         struct msm_drm_private *priv = drm->dev_private;
 540         struct hdmi_platform_config *hdmi_cfg;
 541         struct hdmi *hdmi;
 542         struct device_node *of_node = dev->of_node;
 543         int i, err;
 544
 545         hdmi_cfg = (struct hdmi_platform_config *)
 546                         of_device_get_match_data(dev);
 547         if (!hdmi_cfg) {
 548                 DRM_DEV_ERROR(dev, "unknown hdmi_cfg: %pOFn\n", of_node);
 549                 return -ENXIO;
 550         }
 551
 552         hdmi_cfg->mmio_name     = "core_physical";
 553         hdmi_cfg->qfprom_mmio_name = "qfprom_physical";
 554
 555         for (i = 0; i < HDMI_MAX_NUM_GPIO; i++) {
 556                 const char *name = msm_hdmi_gpio_pdata[i].name;
 557                 struct gpio_desc *gpiod;
 558
 559                 /*
 560                  * We are fetching the GPIO lines "as is" since the connector
 561                  * code is enabling and disabling the lines. Until that point
 562                  * the power-on default value will be kept.
 563                  */
 564                 gpiod = devm_gpiod_get_optional(dev, name, GPIOD_ASIS);
 565                 /* This will catch e.g. -PROBE_DEFER */
 566                 if (IS_ERR(gpiod))
 567                         return PTR_ERR(gpiod);
 568                 if (!gpiod) {
 569                         /* Try a second time, stripping down the name */
 570                         char name3[32];
 571
 572                         /*
 573                          * Try again after stripping out the "qcom,hdmi-tx"
 574                          * prefix. This is mainly to match "hpd-gpios" used
 575                          * in the upstream bindings.
 576                          */
 577                         if (sscanf(name, "qcom,hdmi-tx-%s", name3))
 578                                 gpiod = devm_gpiod_get_optional(dev, name3, GPIOD_ASIS);
 579                         if (IS_ERR(gpiod))
 580                                 return PTR_ERR(gpiod);
 581                         if (!gpiod)
 582                                 DBG("failed to get gpio: %s", name);
 583                 }
 584                 hdmi_cfg->gpios[i].gpiod = gpiod;
 585                 if (gpiod)
 586                         gpiod_set_consumer_name(gpiod, msm_hdmi_gpio_pdata[i].label);
 587                 hdmi_cfg->gpios[i].output = msm_hdmi_gpio_pdata[i].output;
 588                 hdmi_cfg->gpios[i].value = msm_hdmi_gpio_pdata[i].value;
 589         }
 590
 591         dev->platform_data = hdmi_cfg;
 592
 593         hdmi = msm_hdmi_init(to_platform_device(dev));
 594         if (IS_ERR(hdmi))
 595                 return PTR_ERR(hdmi);
 596         priv->hdmi = hdmi;
 597
 598         err = msm_hdmi_register_audio_driver(hdmi, dev);
 599         if (err) {
 600                 DRM_ERROR("Failed to attach an audio codec %d\n", err);
 601                 hdmi->audio_pdev = NULL;
 602         }
 603
 604         return 0;
 605 }
 606
 607 static void msm_hdmi_unbind(struct device *dev, struct device *master,
 608                 void *data)
 609 {
 610         struct drm_device *drm = dev_get_drvdata(master);
 611         struct msm_drm_private *priv = drm->dev_private;
 612         if (priv->hdmi) {
 613                 if (priv->hdmi->audio_pdev)
 614                         platform_device_unregister(priv->hdmi->audio_pdev);
 615
 616                 msm_hdmi_destroy(priv->hdmi);
 617                 priv->hdmi = NULL;
 618         }
 619 }
 620
 621 static const struct component_ops msm_hdmi_ops = {
 622                 .bind   = msm_hdmi_bind,
 623                 .unbind = msm_hdmi_unbind,
 624 };
 625
 626 static int msm_hdmi_dev_probe(struct platform_device *pdev)
 627 {
 628         return component_add(&pdev->dev, &msm_hdmi_ops);
 629 }
 630
 631 static int msm_hdmi_dev_remove(struct platform_device *pdev)
 632 {
 633         component_del(&pdev->dev, &msm_hdmi_ops);
 634         return 0;
 635 }
 636
 637 static const struct of_device_id msm_hdmi_dt_match[] = {
 638         { .compatible = "qcom,hdmi-tx-8996", .data = &hdmi_tx_8996_config },
 639         { .compatible = "qcom,hdmi-tx-8994", .data = &hdmi_tx_8994_config },
 640         { .compatible = "qcom,hdmi-tx-8084", .data = &hdmi_tx_8084_config },
 641         { .compatible = "qcom,hdmi-tx-8974", .data = &hdmi_tx_8974_config },
 642         { .compatible = "qcom,hdmi-tx-8960", .data = &hdmi_tx_8960_config },
 643         { .compatible = "qcom,hdmi-tx-8660", .data = &hdmi_tx_8660_config },
 644         {}
 645 };
 646
 647 static struct platform_driver msm_hdmi_driver = {
 648         .probe = msm_hdmi_dev_probe,
 649         .remove = msm_hdmi_dev_remove,
 650         .driver = {
 651                 .name = "hdmi_msm",
 652                 .of_match_table = msm_hdmi_dt_match,
 653         },
 654 };
 655
 656 void __init msm_hdmi_register(void)
 657 {
 658         msm_hdmi_phy_driver_register();
 659         platform_driver_register(&msm_hdmi_driver);
 660 }
 661
 662 void __exit msm_hdmi_unregister(void)
 663 {
 664         platform_driver_unregister(&msm_hdmi_driver);
 665         msm_hdmi_phy_driver_unregister();
 666 }