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         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                 dev_err(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                 dev_err(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                 dev_err(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                 dev_err(dev->dev, "failed to request IRQ%u: %d\n",
 325                                 hdmi->irq, ret);
 326                 goto fail;
 327         }
 328
 329         encoder->bridge = hdmi->bridge;
 330
 331         priv->bridges[priv->num_bridges++]       = hdmi->bridge;
 332         priv->connectors[priv->num_connectors++] = hdmi->connector;
 333
 334         platform_set_drvdata(pdev, hdmi);
 335
 336         return 0;
 337
 338 fail:
 339         /* bridge is normally destroyed by drm: */
 340         if (hdmi->bridge) {
 341                 msm_hdmi_bridge_destroy(hdmi->bridge);
 342                 hdmi->bridge = NULL;
 343         }
 344         if (hdmi->connector) {
 345                 hdmi->connector->funcs->destroy(hdmi->connector);
 346                 hdmi->connector = NULL;
 347         }
 348
 349         return ret;
 350 }
 351
 352 /*
 353  * The hdmi device:
 354  */
 355
 356 #define HDMI_CFG(item, entry) \
 357         .item ## _names = item ##_names_ ## entry, \
 358         .item ## _cnt   = ARRAY_SIZE(item ## _names_ ## entry)
 359
 360 static const char *pwr_reg_names_none[] = {};
 361 static const char *hpd_reg_names_none[] = {};
 362
 363 static struct hdmi_platform_config hdmi_tx_8660_config;
 364
 365 static const char *hpd_reg_names_8960[] = {"core-vdda", "hdmi-mux"};
 366 static const char *hpd_clk_names_8960[] = {"core_clk", "master_iface_clk", "slave_iface_clk"};
 367
 368 static struct hdmi_platform_config hdmi_tx_8960_config = {
 369                 HDMI_CFG(hpd_reg, 8960),
 370                 HDMI_CFG(hpd_clk, 8960),
 371 };
 372
 373 static const char *pwr_reg_names_8x74[] = {"core-vdda", "core-vcc"};
 374 static const char *hpd_reg_names_8x74[] = {"hpd-gdsc", "hpd-5v"};
 375 static const char *pwr_clk_names_8x74[] = {"extp_clk", "alt_iface_clk"};
 376 static const char *hpd_clk_names_8x74[] = {"iface_clk", "core_clk", "mdp_core_clk"};
 377 static unsigned long hpd_clk_freq_8x74[] = {0, 19200000, 0};
 378
 379 static struct hdmi_platform_config hdmi_tx_8974_config = {
 380                 HDMI_CFG(pwr_reg, 8x74),
 381                 HDMI_CFG(hpd_reg, 8x74),
 382                 HDMI_CFG(pwr_clk, 8x74),
 383                 HDMI_CFG(hpd_clk, 8x74),
 384                 .hpd_freq      = hpd_clk_freq_8x74,
 385 };
 386
 387 static const char *hpd_reg_names_8084[] = {"hpd-gdsc", "hpd-5v", "hpd-5v-en"};
 388
 389 static struct hdmi_platform_config hdmi_tx_8084_config = {
 390                 HDMI_CFG(pwr_reg, 8x74),
 391                 HDMI_CFG(hpd_reg, 8084),
 392                 HDMI_CFG(pwr_clk, 8x74),
 393                 HDMI_CFG(hpd_clk, 8x74),
 394                 .hpd_freq      = hpd_clk_freq_8x74,
 395 };
 396
 397 static struct hdmi_platform_config hdmi_tx_8994_config = {
 398                 HDMI_CFG(pwr_reg, 8x74),
 399                 HDMI_CFG(hpd_reg, none),
 400                 HDMI_CFG(pwr_clk, 8x74),
 401                 HDMI_CFG(hpd_clk, 8x74),
 402                 .hpd_freq      = hpd_clk_freq_8x74,
 403 };
 404
 405 static struct hdmi_platform_config hdmi_tx_8996_config = {
 406                 HDMI_CFG(pwr_reg, none),
 407                 HDMI_CFG(hpd_reg, none),
 408                 HDMI_CFG(pwr_clk, 8x74),
 409                 HDMI_CFG(hpd_clk, 8x74),
 410                 .hpd_freq      = hpd_clk_freq_8x74,
 411 };
 412
 413 static const struct {
 414         const char *name;
 415         const bool output;
 416         const int value;
 417         const char *label;
 418 } msm_hdmi_gpio_pdata[] = {
 419         { "qcom,hdmi-tx-ddc-clk", true, 1, "HDMI_DDC_CLK" },
 420         { "qcom,hdmi-tx-ddc-data", true, 1, "HDMI_DDC_DATA" },
 421         { "qcom,hdmi-tx-hpd", false, 1, "HDMI_HPD" },
 422         { "qcom,hdmi-tx-mux-en", true, 1, "HDMI_MUX_EN" },
 423         { "qcom,hdmi-tx-mux-sel", true, 0, "HDMI_MUX_SEL" },
 424         { "qcom,hdmi-tx-mux-lpm", true, 1, "HDMI_MUX_LPM" },
 425 };
 426
 427 static int msm_hdmi_get_gpio(struct device_node *of_node, const char *name)
 428 {
 429         int gpio;
 430
 431         /* try with the gpio names as in the table (downstream bindings) */
 432         gpio = of_get_named_gpio(of_node, name, 0);
 433         if (gpio < 0) {
 434                 char name2[32];
 435
 436                 /* try with the gpio names as in the upstream bindings */
 437                 snprintf(name2, sizeof(name2), "%s-gpios", name);
 438                 gpio = of_get_named_gpio(of_node, name2, 0);
 439                 if (gpio < 0) {
 440                         char name3[32];
 441
 442                         /*
 443                          * try again after stripping out the "qcom,hdmi-tx"
 444                          * prefix. This is mainly to match "hpd-gpios" used
 445                          * in the upstream bindings
 446                          */
 447                         if (sscanf(name2, "qcom,hdmi-tx-%s", name3))
 448                                 gpio = of_get_named_gpio(of_node, name3, 0);
 449                 }
 450
 451                 if (gpio < 0) {
 452                         DBG("failed to get gpio: %s (%d)", name, gpio);
 453                         gpio = -1;
 454                 }
 455         }
 456         return gpio;
 457 }
 458
 459 /*
 460  * HDMI audio codec callbacks
 461  */
 462 static int msm_hdmi_audio_hw_params(struct device *dev, void *data,
 463                                     struct hdmi_codec_daifmt *daifmt,
 464                                     struct hdmi_codec_params *params)
 465 {
 466         struct hdmi *hdmi = dev_get_drvdata(dev);
 467         unsigned int chan;
 468         unsigned int channel_allocation = 0;
 469         unsigned int rate;
 470         unsigned int level_shift  = 0; /* 0dB */
 471         bool down_mix = false;
 472
 473         dev_dbg(dev, "%u Hz, %d bit, %d channels\n", params->sample_rate,
 474                  params->sample_width, params->cea.channels);
 475
 476         switch (params->cea.channels) {
 477         case 2:
 478                 /* FR and FL speakers */
 479                 channel_allocation  = 0;
 480                 chan = MSM_HDMI_AUDIO_CHANNEL_2;
 481                 break;
 482         case 4:
 483                 /* FC, LFE, FR and FL speakers */
 484                 channel_allocation  = 0x3;
 485                 chan = MSM_HDMI_AUDIO_CHANNEL_4;
 486                 break;
 487         case 6:
 488                 /* RR, RL, FC, LFE, FR and FL speakers */
 489                 channel_allocation  = 0x0B;
 490                 chan = MSM_HDMI_AUDIO_CHANNEL_6;
 491                 break;
 492         case 8:
 493                 /* FRC, FLC, RR, RL, FC, LFE, FR and FL speakers */
 494                 channel_allocation  = 0x1F;
 495                 chan = MSM_HDMI_AUDIO_CHANNEL_8;
 496                 break;
 497         default:
 498                 return -EINVAL;
 499         }
 500
 501         switch (params->sample_rate) {
 502         case 32000:
 503                 rate = HDMI_SAMPLE_RATE_32KHZ;
 504                 break;
 505         case 44100:
 506                 rate = HDMI_SAMPLE_RATE_44_1KHZ;
 507                 break;
 508         case 48000:
 509                 rate = HDMI_SAMPLE_RATE_48KHZ;
 510                 break;
 511         case 88200:
 512                 rate = HDMI_SAMPLE_RATE_88_2KHZ;
 513                 break;
 514         case 96000:
 515                 rate = HDMI_SAMPLE_RATE_96KHZ;
 516                 break;
 517         case 176400:
 518                 rate = HDMI_SAMPLE_RATE_176_4KHZ;
 519                 break;
 520         case 192000:
 521                 rate = HDMI_SAMPLE_RATE_192KHZ;
 522                 break;
 523         default:
 524                 dev_err(dev, "rate[%d] not supported!\n",
 525                         params->sample_rate);
 526                 return -EINVAL;
 527         }
 528
 529         msm_hdmi_audio_set_sample_rate(hdmi, rate);
 530         msm_hdmi_audio_info_setup(hdmi, 1, chan, channel_allocation,
 531                               level_shift, down_mix);
 532
 533         return 0;
 534 }
 535
 536 static void msm_hdmi_audio_shutdown(struct device *dev, void *data)
 537 {
 538         struct hdmi *hdmi = dev_get_drvdata(dev);
 539
 540         msm_hdmi_audio_info_setup(hdmi, 0, 0, 0, 0, 0);
 541 }
 542
 543 static const struct hdmi_codec_ops msm_hdmi_audio_codec_ops = {
 544         .hw_params = msm_hdmi_audio_hw_params,
 545         .audio_shutdown = msm_hdmi_audio_shutdown,
 546 };
 547
 548 static struct hdmi_codec_pdata codec_data = {
 549         .ops = &msm_hdmi_audio_codec_ops,
 550         .max_i2s_channels = 8,
 551         .i2s = 1,
 552 };
 553
 554 static int msm_hdmi_register_audio_driver(struct hdmi *hdmi, struct device *dev)
 555 {
 556         hdmi->audio_pdev = platform_device_register_data(dev,
 557                                                          HDMI_CODEC_DRV_NAME,
 558                                                          PLATFORM_DEVID_AUTO,
 559                                                          &codec_data,
 560                                                          sizeof(codec_data));
 561         return PTR_ERR_OR_ZERO(hdmi->audio_pdev);
 562 }
 563
 564 static int msm_hdmi_bind(struct device *dev, struct device *master, void *data)
 565 {
 566         struct drm_device *drm = dev_get_drvdata(master);
 567         struct msm_drm_private *priv = drm->dev_private;
 568         static struct hdmi_platform_config *hdmi_cfg;
 569         struct hdmi *hdmi;
 570         struct device_node *of_node = dev->of_node;
 571         int i, err;
 572
 573         hdmi_cfg = (struct hdmi_platform_config *)
 574                         of_device_get_match_data(dev);
 575         if (!hdmi_cfg) {
 576                 dev_err(dev, "unknown hdmi_cfg: %s\n", of_node->name);
 577                 return -ENXIO;
 578         }
 579
 580         hdmi_cfg->mmio_name     = "core_physical";
 581         hdmi_cfg->qfprom_mmio_name = "qfprom_physical";
 582
 583         for (i = 0; i < HDMI_MAX_NUM_GPIO; i++) {
 584                 hdmi_cfg->gpios[i].num = msm_hdmi_get_gpio(of_node,
 585                                                 msm_hdmi_gpio_pdata[i].name);
 586                 hdmi_cfg->gpios[i].output = msm_hdmi_gpio_pdata[i].output;
 587                 hdmi_cfg->gpios[i].value = msm_hdmi_gpio_pdata[i].value;
 588                 hdmi_cfg->gpios[i].label = msm_hdmi_gpio_pdata[i].label;
 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 }