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