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

   1 /*
   2  * Copyright (c) 2014 The Linux Foundation. All rights reserved.
   3  * Copyright (C) 2013 Red Hat
   4  * Author: Rob Clark <robdclark@gmail.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License version 2 as published by
   8  * the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along with
  16  * this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #include <linux/of_irq.h>
  20 #include <linux/of_gpio.h>
  21
  22 #include <sound/hdmi-codec.h>
  23 #include "hdmi.h"
  24
  25 void msm_hdmi_set_mode(struct hdmi *hdmi, bool power_on)
  26 {
  27         uint32_t ctrl = 0;
  28         unsigned long flags;
  29
  30         spin_lock_irqsave(&hdmi->reg_lock, flags);
  31         if (power_on) {
  32                 ctrl |= HDMI_CTRL_ENABLE;
  33                 if (!hdmi->hdmi_mode) {
  34                         ctrl |= HDMI_CTRL_HDMI;
  35                         hdmi_write(hdmi, REG_HDMI_CTRL, ctrl);
  36                         ctrl &= ~HDMI_CTRL_HDMI;
  37                 } else {
  38                         ctrl |= HDMI_CTRL_HDMI;
  39                 }
  40         } else {
  41                 ctrl = HDMI_CTRL_HDMI;
  42         }
  43
  44         hdmi_write(hdmi, REG_HDMI_CTRL, ctrl);
  45         spin_unlock_irqrestore(&hdmi->reg_lock, flags);
  46         DBG("HDMI Core: %s, HDMI_CTRL=0x%08x",
  47                         power_on ? "Enable" : "Disable", ctrl);
  48 }
  49
  50 static irqreturn_t msm_hdmi_irq(int irq, void *dev_id)
  51 {
  52         struct hdmi *hdmi = dev_id;
  53
  54         /* Process HPD: */
  55         msm_hdmi_connector_irq(hdmi->connector);
  56
  57         /* Process DDC: */
  58         msm_hdmi_i2c_irq(hdmi->i2c);
  59
  60         /* Process HDCP: */
  61         if (hdmi->hdcp_ctrl)
  62                 msm_hdmi_hdcp_irq(hdmi->hdcp_ctrl);
  63
  64         /* TODO audio.. */
  65
  66         return IRQ_HANDLED;
  67 }
  68
  69 static void msm_hdmi_destroy(struct hdmi *hdmi)
  70 {
  71         /*
  72          * at this point, hpd has been disabled,
  73          * after flush workq, it's safe to deinit hdcp
  74          */
  75         if (hdmi->workq) {
  76                 flush_workqueue(hdmi->workq);
  77                 destroy_workqueue(hdmi->workq);
  78         }
  79         msm_hdmi_hdcp_destroy(hdmi);
  80
  81         if (hdmi->phy_dev) {
  82                 put_device(hdmi->phy_dev);
  83                 hdmi->phy = NULL;
  84                 hdmi->phy_dev = NULL;
  85         }
  86
  87         if (hdmi->i2c)
  88                 msm_hdmi_i2c_destroy(hdmi->i2c);
  89
  90         platform_set_drvdata(hdmi->pdev, NULL);
  91 }
  92
  93 static int msm_hdmi_get_phy(struct hdmi *hdmi)
  94 {
  95         struct platform_device *pdev = hdmi->pdev;
  96         struct platform_device *phy_pdev;
  97         struct device_node *phy_node;
  98
  99         phy_node = of_parse_phandle(pdev->dev.of_node, "phys", 0);
 100         if (!phy_node) {
 101                 dev_err(&pdev->dev, "cannot find phy device\n");
 102                 return -ENXIO;
 103         }
 104
 105         phy_pdev = of_find_device_by_node(phy_node);
 106         if (phy_pdev)
 107                 hdmi->phy = platform_get_drvdata(phy_pdev);
 108
 109         of_node_put(phy_node);
 110
 111         if (!phy_pdev || !hdmi->phy) {
 112                 dev_err(&pdev->dev, "phy driver is not ready\n");
 113                 return -EPROBE_DEFER;
 114         }
 115
 116         hdmi->phy_dev = get_device(&phy_pdev->dev);
 117
 118         return 0;
 119 }
 120
 121 /* construct hdmi at bind/probe time, grab all the resources.  If
 122  * we are to EPROBE_DEFER we want to do it here, rather than later
 123  * at modeset_init() time
 124  */
 125 static struct hdmi *msm_hdmi_init(struct platform_device *pdev)
 126 {
 127         struct hdmi_platform_config *config = pdev->dev.platform_data;
 128         struct hdmi *hdmi = NULL;
 129         struct resource *res;
 130         int i, ret;
 131
 132         hdmi = devm_kzalloc(&pdev->dev, sizeof(*hdmi), GFP_KERNEL);
 133         if (!hdmi) {
 134                 ret = -ENOMEM;
 135                 goto fail;
 136         }
 137
 138         hdmi->pdev = pdev;
 139         hdmi->config = config;
 140         spin_lock_init(&hdmi->reg_lock);
 141
 142         hdmi->mmio = msm_ioremap(pdev, config->mmio_name, "HDMI");
 143         if (IS_ERR(hdmi->mmio)) {
 144                 ret = PTR_ERR(hdmi->mmio);
 145                 goto fail;
 146         }
 147
 148         /* HDCP needs physical address of hdmi register */
 149         res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
 150                 config->mmio_name);
 151         if (!res) {
 152                 ret = -EINVAL;
 153                 goto fail;
 154         }
 155         hdmi->mmio_phy_addr = res->start;
 156
 157         hdmi->qfprom_mmio = msm_ioremap(pdev,
 158                 config->qfprom_mmio_name, "HDMI_QFPROM");
 159         if (IS_ERR(hdmi->qfprom_mmio)) {
 160                 dev_info(&pdev->dev, "can't find qfprom resource\n");
 161                 hdmi->qfprom_mmio = NULL;
 162         }
 163
 164         hdmi->hpd_regs = devm_kzalloc(&pdev->dev, sizeof(hdmi->hpd_regs[0]) *
 165                         config->hpd_reg_cnt, GFP_KERNEL);
 166         if (!hdmi->hpd_regs) {
 167                 ret = -ENOMEM;
 168                 goto fail;
 169         }
 170         for (i = 0; i < config->hpd_reg_cnt; i++) {
 171                 struct regulator *reg;
 172
 173                 reg = devm_regulator_get(&pdev->dev,
 174                                 config->hpd_reg_names[i]);
 175                 if (IS_ERR(reg)) {
 176                         ret = PTR_ERR(reg);
 177                         dev_err(&pdev->dev, "failed to get hpd regulator: %s (%d)\n",
 178                                         config->hpd_reg_names[i], ret);
 179                         goto fail;
 180                 }
 181
 182                 hdmi->hpd_regs[i] = reg;
 183         }
 184
 185         hdmi->pwr_regs = devm_kzalloc(&pdev->dev, sizeof(hdmi->pwr_regs[0]) *
 186                         config->pwr_reg_cnt, GFP_KERNEL);
 187         if (!hdmi->pwr_regs) {
 188                 ret = -ENOMEM;
 189                 goto fail;
 190         }
 191         for (i = 0; i < config->pwr_reg_cnt; i++) {
 192                 struct regulator *reg;
 193
 194                 reg = devm_regulator_get(&pdev->dev,
 195                                 config->pwr_reg_names[i]);
 196                 if (IS_ERR(reg)) {
 197                         ret = PTR_ERR(reg);
 198                         dev_err(&pdev->dev, "failed to get pwr regulator: %s (%d)\n",
 199                                         config->pwr_reg_names[i], ret);
 200                         goto fail;
 201                 }
 202
 203                 hdmi->pwr_regs[i] = reg;
 204         }
 205
 206         hdmi->hpd_clks = devm_kzalloc(&pdev->dev, sizeof(hdmi->hpd_clks[0]) *
 207                         config->hpd_clk_cnt, GFP_KERNEL);
 208         if (!hdmi->hpd_clks) {
 209                 ret = -ENOMEM;
 210                 goto fail;
 211         }
 212         for (i = 0; i < config->hpd_clk_cnt; i++) {
 213                 struct clk *clk;
 214
 215                 clk = devm_clk_get(&pdev->dev, config->hpd_clk_names[i]);
 216                 if (IS_ERR(clk)) {
 217                         ret = PTR_ERR(clk);
 218                         dev_err(&pdev->dev, "failed to get hpd clk: %s (%d)\n",
 219                                         config->hpd_clk_names[i], ret);
 220                         goto fail;
 221                 }
 222
 223                 hdmi->hpd_clks[i] = clk;
 224         }
 225
 226         hdmi->pwr_clks = devm_kzalloc(&pdev->dev, sizeof(hdmi->pwr_clks[0]) *
 227                         config->pwr_clk_cnt, GFP_KERNEL);
 228         if (!hdmi->pwr_clks) {
 229                 ret = -ENOMEM;
 230                 goto fail;
 231         }
 232         for (i = 0; i < config->pwr_clk_cnt; i++) {
 233                 struct clk *clk;
 234
 235                 clk = devm_clk_get(&pdev->dev, config->pwr_clk_names[i]);
 236                 if (IS_ERR(clk)) {
 237                         ret = PTR_ERR(clk);
 238                         dev_err(&pdev->dev, "failed to get pwr clk: %s (%d)\n",
 239                                         config->pwr_clk_names[i], ret);
 240                         goto fail;
 241                 }
 242
 243                 hdmi->pwr_clks[i] = clk;
 244         }
 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                 dev_err(&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                 dev_err(&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         if (priv->num_bridges == ARRAY_SIZE(priv->bridges)) {
 293                 DRM_DEV_ERROR(dev->dev, "too many bridges\n");
 294                 return -ENOSPC;
 295         }
 296
 297         hdmi->dev = dev;
 298         hdmi->encoder = encoder;
 299
 300         hdmi_audio_infoframe_init(&hdmi->audio.infoframe);
 301
 302         hdmi->bridge = msm_hdmi_bridge_init(hdmi);
 303         if (IS_ERR(hdmi->bridge)) {
 304                 ret = PTR_ERR(hdmi->bridge);
 305                 dev_err(dev->dev, "failed to create HDMI bridge: %d\n", ret);
 306                 hdmi->bridge = NULL;
 307                 goto fail;
 308         }
 309
 310         hdmi->connector = msm_hdmi_connector_init(hdmi);
 311         if (IS_ERR(hdmi->connector)) {
 312                 ret = PTR_ERR(hdmi->connector);
 313                 dev_err(dev->dev, "failed to create HDMI connector: %d\n", ret);
 314                 hdmi->connector = NULL;
 315                 goto fail;
 316         }
 317
 318         hdmi->irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
 319         if (hdmi->irq < 0) {
 320                 ret = hdmi->irq;
 321                 dev_err(dev->dev, "failed to get irq: %d\n", ret);
 322                 goto fail;
 323         }
 324
 325         ret = devm_request_irq(&pdev->dev, hdmi->irq,
 326                         msm_hdmi_irq, IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
 327                         "hdmi_isr", hdmi);
 328         if (ret < 0) {
 329                 dev_err(dev->dev, "failed to request IRQ%u: %d\n",
 330                                 hdmi->irq, ret);
 331                 goto fail;
 332         }
 333
 334         encoder->bridge = hdmi->bridge;
 335
 336         priv->bridges[priv->num_bridges++]       = hdmi->bridge;
 337         priv->connectors[priv->num_connectors++] = hdmi->connector;
 338
 339         platform_set_drvdata(pdev, hdmi);
 340
 341         return 0;
 342
 343 fail:
 344         /* bridge is normally destroyed by drm: */
 345         if (hdmi->bridge) {
 346                 msm_hdmi_bridge_destroy(hdmi->bridge);
 347                 hdmi->bridge = NULL;
 348         }
 349         if (hdmi->connector) {
 350                 hdmi->connector->funcs->destroy(hdmi->connector);
 351                 hdmi->connector = NULL;
 352         }
 353
 354         return ret;
 355 }
 356
 357 /*
 358  * The hdmi device:
 359  */
 360
 361 #define HDMI_CFG(item, entry) \
 362         .item ## _names = item ##_names_ ## entry, \
 363         .item ## _cnt   = ARRAY_SIZE(item ## _names_ ## entry)
 364
 365 static const char *pwr_reg_names_none[] = {};
 366 static const char *hpd_reg_names_none[] = {};
 367
 368 static struct hdmi_platform_config hdmi_tx_8660_config;
 369
 370 static const char *hpd_reg_names_8960[] = {"core-vdda", "hdmi-mux"};
 371 static const char *hpd_clk_names_8960[] = {"core_clk", "master_iface_clk", "slave_iface_clk"};
 372
 373 static struct hdmi_platform_config hdmi_tx_8960_config = {
 374                 HDMI_CFG(hpd_reg, 8960),
 375                 HDMI_CFG(hpd_clk, 8960),
 376 };
 377
 378 static const char *pwr_reg_names_8x74[] = {"core-vdda", "core-vcc"};
 379 static const char *hpd_reg_names_8x74[] = {"hpd-gdsc", "hpd-5v"};
 380 static const char *pwr_clk_names_8x74[] = {"extp_clk", "alt_iface_clk"};
 381 static const char *hpd_clk_names_8x74[] = {"iface_clk", "core_clk", "mdp_core_clk"};
 382 static unsigned long hpd_clk_freq_8x74[] = {0, 19200000, 0};
 383
 384 static struct hdmi_platform_config hdmi_tx_8974_config = {
 385                 HDMI_CFG(pwr_reg, 8x74),
 386                 HDMI_CFG(hpd_reg, 8x74),
 387                 HDMI_CFG(pwr_clk, 8x74),
 388                 HDMI_CFG(hpd_clk, 8x74),
 389                 .hpd_freq      = hpd_clk_freq_8x74,
 390 };
 391
 392 static const char *hpd_reg_names_8084[] = {"hpd-gdsc", "hpd-5v", "hpd-5v-en"};
 393
 394 static struct hdmi_platform_config hdmi_tx_8084_config = {
 395                 HDMI_CFG(pwr_reg, 8x74),
 396                 HDMI_CFG(hpd_reg, 8084),
 397                 HDMI_CFG(pwr_clk, 8x74),
 398                 HDMI_CFG(hpd_clk, 8x74),
 399                 .hpd_freq      = hpd_clk_freq_8x74,
 400 };
 401
 402 static struct hdmi_platform_config hdmi_tx_8994_config = {
 403                 HDMI_CFG(pwr_reg, 8x74),
 404                 HDMI_CFG(hpd_reg, none),
 405                 HDMI_CFG(pwr_clk, 8x74),
 406                 HDMI_CFG(hpd_clk, 8x74),
 407                 .hpd_freq      = hpd_clk_freq_8x74,
 408 };
 409
 410 static struct hdmi_platform_config hdmi_tx_8996_config = {
 411                 HDMI_CFG(pwr_reg, none),
 412                 HDMI_CFG(hpd_reg, none),
 413                 HDMI_CFG(pwr_clk, 8x74),
 414                 HDMI_CFG(hpd_clk, 8x74),
 415                 .hpd_freq      = hpd_clk_freq_8x74,
 416 };
 417
 418 static const struct {
 419         const char *name;
 420         const bool output;
 421         const int value;
 422         const char *label;
 423 } msm_hdmi_gpio_pdata[] = {
 424         { "qcom,hdmi-tx-ddc-clk", true, 1, "HDMI_DDC_CLK" },
 425         { "qcom,hdmi-tx-ddc-data", true, 1, "HDMI_DDC_DATA" },
 426         { "qcom,hdmi-tx-hpd", false, 1, "HDMI_HPD" },
 427         { "qcom,hdmi-tx-mux-en", true, 1, "HDMI_MUX_EN" },
 428         { "qcom,hdmi-tx-mux-sel", true, 0, "HDMI_MUX_SEL" },
 429         { "qcom,hdmi-tx-mux-lpm", true, 1, "HDMI_MUX_LPM" },
 430 };
 431
 432 static int msm_hdmi_get_gpio(struct device_node *of_node, const char *name)
 433 {
 434         int gpio;
 435
 436         /* try with the gpio names as in the table (downstream bindings) */
 437         gpio = of_get_named_gpio(of_node, name, 0);
 438         if (gpio < 0) {
 439                 char name2[32];
 440
 441                 /* try with the gpio names as in the upstream bindings */
 442                 snprintf(name2, sizeof(name2), "%s-gpios", name);
 443                 gpio = of_get_named_gpio(of_node, name2, 0);
 444                 if (gpio < 0) {
 445                         char name3[32];
 446
 447                         /*
 448                          * try again after stripping out the "qcom,hdmi-tx"
 449                          * prefix. This is mainly to match "hpd-gpios" used
 450                          * in the upstream bindings
 451                          */
 452                         if (sscanf(name2, "qcom,hdmi-tx-%s", name3))
 453                                 gpio = of_get_named_gpio(of_node, name3, 0);
 454                 }
 455
 456                 if (gpio < 0) {
 457                         DBG("failed to get gpio: %s (%d)", name, gpio);
 458                         gpio = -1;
 459                 }
 460         }
 461         return gpio;
 462 }
 463
 464 /*
 465  * HDMI audio codec callbacks
 466  */
 467 static int msm_hdmi_audio_hw_params(struct device *dev, void *data,
 468                                     struct hdmi_codec_daifmt *daifmt,
 469                                     struct hdmi_codec_params *params)
 470 {
 471         struct hdmi *hdmi = dev_get_drvdata(dev);
 472         unsigned int chan;
 473         unsigned int channel_allocation = 0;
 474         unsigned int rate;
 475         unsigned int level_shift  = 0; /* 0dB */
 476         bool down_mix = false;
 477
 478         dev_dbg(dev, "%u Hz, %d bit, %d channels\n", params->sample_rate,
 479                  params->sample_width, params->cea.channels);
 480
 481         switch (params->cea.channels) {
 482         case 2:
 483                 /* FR and FL speakers */
 484                 channel_allocation  = 0;
 485                 chan = MSM_HDMI_AUDIO_CHANNEL_2;
 486                 break;
 487         case 4:
 488                 /* FC, LFE, FR and FL speakers */
 489                 channel_allocation  = 0x3;
 490                 chan = MSM_HDMI_AUDIO_CHANNEL_4;
 491                 break;
 492         case 6:
 493                 /* RR, RL, FC, LFE, FR and FL speakers */
 494                 channel_allocation  = 0x0B;
 495                 chan = MSM_HDMI_AUDIO_CHANNEL_6;
 496                 break;
 497         case 8:
 498                 /* FRC, FLC, RR, RL, FC, LFE, FR and FL speakers */
 499                 channel_allocation  = 0x1F;
 500                 chan = MSM_HDMI_AUDIO_CHANNEL_8;
 501                 break;
 502         default:
 503                 return -EINVAL;
 504         }
 505
 506         switch (params->sample_rate) {
 507         case 32000:
 508                 rate = HDMI_SAMPLE_RATE_32KHZ;
 509                 break;
 510         case 44100:
 511                 rate = HDMI_SAMPLE_RATE_44_1KHZ;
 512                 break;
 513         case 48000:
 514                 rate = HDMI_SAMPLE_RATE_48KHZ;
 515                 break;
 516         case 88200:
 517                 rate = HDMI_SAMPLE_RATE_88_2KHZ;
 518                 break;
 519         case 96000:
 520                 rate = HDMI_SAMPLE_RATE_96KHZ;
 521                 break;
 522         case 176400:
 523                 rate = HDMI_SAMPLE_RATE_176_4KHZ;
 524                 break;
 525         case 192000:
 526                 rate = HDMI_SAMPLE_RATE_192KHZ;
 527                 break;
 528         default:
 529                 dev_err(dev, "rate[%d] not supported!\n",
 530                         params->sample_rate);
 531                 return -EINVAL;
 532         }
 533
 534         msm_hdmi_audio_set_sample_rate(hdmi, rate);
 535         msm_hdmi_audio_info_setup(hdmi, 1, chan, channel_allocation,
 536                               level_shift, down_mix);
 537
 538         return 0;
 539 }
 540
 541 static void msm_hdmi_audio_shutdown(struct device *dev, void *data)
 542 {
 543         struct hdmi *hdmi = dev_get_drvdata(dev);
 544
 545         msm_hdmi_audio_info_setup(hdmi, 0, 0, 0, 0, 0);
 546 }
 547
 548 static const struct hdmi_codec_ops msm_hdmi_audio_codec_ops = {
 549         .hw_params = msm_hdmi_audio_hw_params,
 550         .audio_shutdown = msm_hdmi_audio_shutdown,
 551 };
 552
 553 static struct hdmi_codec_pdata codec_data = {
 554         .ops = &msm_hdmi_audio_codec_ops,
 555         .max_i2s_channels = 8,
 556         .i2s = 1,
 557 };
 558
 559 static int msm_hdmi_register_audio_driver(struct hdmi *hdmi, struct device *dev)
 560 {
 561         hdmi->audio_pdev = platform_device_register_data(dev,
 562                                                          HDMI_CODEC_DRV_NAME,
 563                                                          PLATFORM_DEVID_AUTO,
 564                                                          &codec_data,
 565                                                          sizeof(codec_data));
 566         return PTR_ERR_OR_ZERO(hdmi->audio_pdev);
 567 }
 568
 569 static int msm_hdmi_bind(struct device *dev, struct device *master, void *data)
 570 {
 571         struct drm_device *drm = dev_get_drvdata(master);
 572         struct msm_drm_private *priv = drm->dev_private;
 573         static struct hdmi_platform_config *hdmi_cfg;
 574         struct hdmi *hdmi;
 575         struct device_node *of_node = dev->of_node;
 576         int i, err;
 577
 578         hdmi_cfg = (struct hdmi_platform_config *)
 579                         of_device_get_match_data(dev);
 580         if (!hdmi_cfg) {
 581                 dev_err(dev, "unknown hdmi_cfg: %s\n", of_node->name);
 582                 return -ENXIO;
 583         }
 584
 585         hdmi_cfg->mmio_name     = "core_physical";
 586         hdmi_cfg->qfprom_mmio_name = "qfprom_physical";
 587
 588         for (i = 0; i < HDMI_MAX_NUM_GPIO; i++) {
 589                 hdmi_cfg->gpios[i].num = msm_hdmi_get_gpio(of_node,
 590                                                 msm_hdmi_gpio_pdata[i].name);
 591                 hdmi_cfg->gpios[i].output = msm_hdmi_gpio_pdata[i].output;
 592                 hdmi_cfg->gpios[i].value = msm_hdmi_gpio_pdata[i].value;
 593                 hdmi_cfg->gpios[i].label = msm_hdmi_gpio_pdata[i].label;
 594         }
 595
 596         dev->platform_data = hdmi_cfg;
 597
 598         hdmi = msm_hdmi_init(to_platform_device(dev));
 599         if (IS_ERR(hdmi))
 600                 return PTR_ERR(hdmi);
 601         priv->hdmi = hdmi;
 602
 603         err = msm_hdmi_register_audio_driver(hdmi, dev);
 604         if (err) {
 605                 DRM_ERROR("Failed to attach an audio codec %d\n", err);
 606                 hdmi->audio_pdev = NULL;
 607         }
 608
 609         return 0;
 610 }
 611
 612 static void msm_hdmi_unbind(struct device *dev, struct device *master,
 613                 void *data)
 614 {
 615         struct drm_device *drm = dev_get_drvdata(master);
 616         struct msm_drm_private *priv = drm->dev_private;
 617         if (priv->hdmi) {
 618                 if (priv->hdmi->audio_pdev)
 619                         platform_device_unregister(priv->hdmi->audio_pdev);
 620
 621                 msm_hdmi_destroy(priv->hdmi);
 622                 priv->hdmi = NULL;
 623         }
 624 }
 625
 626 static const struct component_ops msm_hdmi_ops = {
 627                 .bind   = msm_hdmi_bind,
 628                 .unbind = msm_hdmi_unbind,
 629 };
 630
 631 static int msm_hdmi_dev_probe(struct platform_device *pdev)
 632 {
 633         return component_add(&pdev->dev, &msm_hdmi_ops);
 634 }
 635
 636 static int msm_hdmi_dev_remove(struct platform_device *pdev)
 637 {
 638         component_del(&pdev->dev, &msm_hdmi_ops);
 639         return 0;
 640 }
 641
 642 static const struct of_device_id msm_hdmi_dt_match[] = {
 643         { .compatible = "qcom,hdmi-tx-8996", .data = &hdmi_tx_8996_config },
 644         { .compatible = "qcom,hdmi-tx-8994", .data = &hdmi_tx_8994_config },
 645         { .compatible = "qcom,hdmi-tx-8084", .data = &hdmi_tx_8084_config },
 646         { .compatible = "qcom,hdmi-tx-8974", .data = &hdmi_tx_8974_config },
 647         { .compatible = "qcom,hdmi-tx-8960", .data = &hdmi_tx_8960_config },
 648         { .compatible = "qcom,hdmi-tx-8660", .data = &hdmi_tx_8660_config },
 649         {}
 650 };
 651
 652 static struct platform_driver msm_hdmi_driver = {
 653         .probe = msm_hdmi_dev_probe,
 654         .remove = msm_hdmi_dev_remove,
 655         .driver = {
 656                 .name = "hdmi_msm",
 657                 .of_match_table = msm_hdmi_dt_match,
 658         },
 659 };
 660
 661 void __init msm_hdmi_register(void)
 662 {
 663         msm_hdmi_phy_driver_register();
 664         platform_driver_register(&msm_hdmi_driver);
 665 }
 666
 667 void __exit msm_hdmi_unregister(void)
 668 {
 669         platform_driver_unregister(&msm_hdmi_driver);
 670         msm_hdmi_phy_driver_unregister();
 671 }