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         hdmi->mmio_phy_addr = res->start;
 152
 153         hdmi->qfprom_mmio = msm_ioremap(pdev,
 154                 config->qfprom_mmio_name, "HDMI_QFPROM");
 155         if (IS_ERR(hdmi->qfprom_mmio)) {
 156                 dev_info(&pdev->dev, "can't find qfprom resource\n");
 157                 hdmi->qfprom_mmio = NULL;
 158         }
 159
 160         hdmi->hpd_regs = devm_kzalloc(&pdev->dev, sizeof(hdmi->hpd_regs[0]) *
 161                         config->hpd_reg_cnt, GFP_KERNEL);
 162         if (!hdmi->hpd_regs) {
 163                 ret = -ENOMEM;
 164                 goto fail;
 165         }
 166         for (i = 0; i < config->hpd_reg_cnt; i++) {
 167                 struct regulator *reg;
 168
 169                 reg = devm_regulator_get(&pdev->dev,
 170                                 config->hpd_reg_names[i]);
 171                 if (IS_ERR(reg)) {
 172                         ret = PTR_ERR(reg);
 173                         dev_err(&pdev->dev, "failed to get hpd regulator: %s (%d)\n",
 174                                         config->hpd_reg_names[i], ret);
 175                         goto fail;
 176                 }
 177
 178                 hdmi->hpd_regs[i] = reg;
 179         }
 180
 181         hdmi->pwr_regs = devm_kzalloc(&pdev->dev, sizeof(hdmi->pwr_regs[0]) *
 182                         config->pwr_reg_cnt, GFP_KERNEL);
 183         if (!hdmi->pwr_regs) {
 184                 ret = -ENOMEM;
 185                 goto fail;
 186         }
 187         for (i = 0; i < config->pwr_reg_cnt; i++) {
 188                 struct regulator *reg;
 189
 190                 reg = devm_regulator_get(&pdev->dev,
 191                                 config->pwr_reg_names[i]);
 192                 if (IS_ERR(reg)) {
 193                         ret = PTR_ERR(reg);
 194                         dev_err(&pdev->dev, "failed to get pwr regulator: %s (%d)\n",
 195                                         config->pwr_reg_names[i], ret);
 196                         goto fail;
 197                 }
 198
 199                 hdmi->pwr_regs[i] = reg;
 200         }
 201
 202         hdmi->hpd_clks = devm_kzalloc(&pdev->dev, sizeof(hdmi->hpd_clks[0]) *
 203                         config->hpd_clk_cnt, 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 = devm_clk_get(&pdev->dev, config->hpd_clk_names[i]);
 212                 if (IS_ERR(clk)) {
 213                         ret = PTR_ERR(clk);
 214                         dev_err(&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_kzalloc(&pdev->dev, sizeof(hdmi->pwr_clks[0]) *
 223                         config->pwr_clk_cnt, GFP_KERNEL);
 224         if (!hdmi->pwr_clks) {
 225                 ret = -ENOMEM;
 226                 goto fail;
 227         }
 228         for (i = 0; i < config->pwr_clk_cnt; i++) {
 229                 struct clk *clk;
 230
 231                 clk = devm_clk_get(&pdev->dev, config->pwr_clk_names[i]);
 232                 if (IS_ERR(clk)) {
 233                         ret = PTR_ERR(clk);
 234                         dev_err(&pdev->dev, "failed to get pwr clk: %s (%d)\n",
 235                                         config->pwr_clk_names[i], ret);
 236                         goto fail;
 237                 }
 238
 239                 hdmi->pwr_clks[i] = clk;
 240         }
 241
 242         hdmi->workq = alloc_ordered_workqueue("msm_hdmi", 0);
 243
 244         hdmi->i2c = msm_hdmi_i2c_init(hdmi);
 245         if (IS_ERR(hdmi->i2c)) {
 246                 ret = PTR_ERR(hdmi->i2c);
 247                 dev_err(&pdev->dev, "failed to get i2c: %d\n", ret);
 248                 hdmi->i2c = NULL;
 249                 goto fail;
 250         }
 251
 252         ret = msm_hdmi_get_phy(hdmi);
 253         if (ret) {
 254                 dev_err(&pdev->dev, "failed to get phy\n");
 255                 goto fail;
 256         }
 257
 258         hdmi->hdcp_ctrl = msm_hdmi_hdcp_init(hdmi);
 259         if (IS_ERR(hdmi->hdcp_ctrl)) {
 260                 dev_warn(&pdev->dev, "failed to init hdcp: disabled\n");
 261                 hdmi->hdcp_ctrl = NULL;
 262         }
 263
 264         return hdmi;
 265
 266 fail:
 267         if (hdmi)
 268                 msm_hdmi_destroy(hdmi);
 269
 270         return ERR_PTR(ret);
 271 }
 272
 273 /* Second part of initialization, the drm/kms level modeset_init,
 274  * constructs/initializes mode objects, etc, is called from master
 275  * driver (not hdmi sub-device's probe/bind!)
 276  *
 277  * Any resource (regulator/clk/etc) which could be missing at boot
 278  * should be handled in msm_hdmi_init() so that failure happens from
 279  * hdmi sub-device's probe.
 280  */
 281 int msm_hdmi_modeset_init(struct hdmi *hdmi,
 282                 struct drm_device *dev, struct drm_encoder *encoder)
 283 {
 284         struct msm_drm_private *priv = dev->dev_private;
 285         struct platform_device *pdev = hdmi->pdev;
 286         int ret;
 287
 288         hdmi->dev = dev;
 289         hdmi->encoder = encoder;
 290
 291         hdmi_audio_infoframe_init(&hdmi->audio.infoframe);
 292
 293         hdmi->bridge = msm_hdmi_bridge_init(hdmi);
 294         if (IS_ERR(hdmi->bridge)) {
 295                 ret = PTR_ERR(hdmi->bridge);
 296                 dev_err(dev->dev, "failed to create HDMI bridge: %d\n", ret);
 297                 hdmi->bridge = NULL;
 298                 goto fail;
 299         }
 300
 301         hdmi->connector = msm_hdmi_connector_init(hdmi);
 302         if (IS_ERR(hdmi->connector)) {
 303                 ret = PTR_ERR(hdmi->connector);
 304                 dev_err(dev->dev, "failed to create HDMI connector: %d\n", ret);
 305                 hdmi->connector = NULL;
 306                 goto fail;
 307         }
 308
 309         hdmi->irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
 310         if (hdmi->irq < 0) {
 311                 ret = hdmi->irq;
 312                 dev_err(dev->dev, "failed to get irq: %d\n", ret);
 313                 goto fail;
 314         }
 315
 316         ret = devm_request_irq(&pdev->dev, hdmi->irq,
 317                         msm_hdmi_irq, IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
 318                         "hdmi_isr", hdmi);
 319         if (ret < 0) {
 320                 dev_err(dev->dev, "failed to request IRQ%u: %d\n",
 321                                 hdmi->irq, ret);
 322                 goto fail;
 323         }
 324
 325         encoder->bridge = hdmi->bridge;
 326
 327         priv->bridges[priv->num_bridges++]       = hdmi->bridge;
 328         priv->connectors[priv->num_connectors++] = hdmi->connector;
 329
 330         platform_set_drvdata(pdev, hdmi);
 331
 332         return 0;
 333
 334 fail:
 335         /* bridge is normally destroyed by drm: */
 336         if (hdmi->bridge) {
 337                 msm_hdmi_bridge_destroy(hdmi->bridge);
 338                 hdmi->bridge = NULL;
 339         }
 340         if (hdmi->connector) {
 341                 hdmi->connector->funcs->destroy(hdmi->connector);
 342                 hdmi->connector = NULL;
 343         }
 344
 345         return ret;
 346 }
 347
 348 /*
 349  * The hdmi device:
 350  */
 351
 352 #define HDMI_CFG(item, entry) \
 353         .item ## _names = item ##_names_ ## entry, \
 354         .item ## _cnt   = ARRAY_SIZE(item ## _names_ ## entry)
 355
 356 static const char *pwr_reg_names_none[] = {};
 357 static const char *hpd_reg_names_none[] = {};
 358
 359 static struct hdmi_platform_config hdmi_tx_8660_config;
 360
 361 static const char *hpd_reg_names_8960[] = {"core-vdda", "hdmi-mux"};
 362 static const char *hpd_clk_names_8960[] = {"core_clk", "master_iface_clk", "slave_iface_clk"};
 363
 364 static struct hdmi_platform_config hdmi_tx_8960_config = {
 365                 HDMI_CFG(hpd_reg, 8960),
 366                 HDMI_CFG(hpd_clk, 8960),
 367 };
 368
 369 static const char *pwr_reg_names_8x74[] = {"core-vdda", "core-vcc"};
 370 static const char *hpd_reg_names_8x74[] = {"hpd-gdsc", "hpd-5v"};
 371 static const char *pwr_clk_names_8x74[] = {"extp_clk", "alt_iface_clk"};
 372 static const char *hpd_clk_names_8x74[] = {"iface_clk", "core_clk", "mdp_core_clk"};
 373 static unsigned long hpd_clk_freq_8x74[] = {0, 19200000, 0};
 374
 375 static struct hdmi_platform_config hdmi_tx_8974_config = {
 376                 HDMI_CFG(pwr_reg, 8x74),
 377                 HDMI_CFG(hpd_reg, 8x74),
 378                 HDMI_CFG(pwr_clk, 8x74),
 379                 HDMI_CFG(hpd_clk, 8x74),
 380                 .hpd_freq      = hpd_clk_freq_8x74,
 381 };
 382
 383 static const char *hpd_reg_names_8084[] = {"hpd-gdsc", "hpd-5v", "hpd-5v-en"};
 384
 385 static struct hdmi_platform_config hdmi_tx_8084_config = {
 386                 HDMI_CFG(pwr_reg, 8x74),
 387                 HDMI_CFG(hpd_reg, 8084),
 388                 HDMI_CFG(pwr_clk, 8x74),
 389                 HDMI_CFG(hpd_clk, 8x74),
 390                 .hpd_freq      = hpd_clk_freq_8x74,
 391 };
 392
 393 static struct hdmi_platform_config hdmi_tx_8994_config = {
 394                 HDMI_CFG(pwr_reg, 8x74),
 395                 HDMI_CFG(hpd_reg, none),
 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_8996_config = {
 402                 HDMI_CFG(pwr_reg, none),
 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 const struct {
 410         const char *name;
 411         const bool output;
 412         const int value;
 413         const char *label;
 414 } msm_hdmi_gpio_pdata[] = {
 415         { "qcom,hdmi-tx-ddc-clk", true, 1, "HDMI_DDC_CLK" },
 416         { "qcom,hdmi-tx-ddc-data", true, 1, "HDMI_DDC_DATA" },
 417         { "qcom,hdmi-tx-hpd", false, 1, "HDMI_HPD" },
 418         { "qcom,hdmi-tx-mux-en", true, 1, "HDMI_MUX_EN" },
 419         { "qcom,hdmi-tx-mux-sel", true, 0, "HDMI_MUX_SEL" },
 420         { "qcom,hdmi-tx-mux-lpm", true, 1, "HDMI_MUX_LPM" },
 421 };
 422
 423 static int msm_hdmi_get_gpio(struct device_node *of_node, const char *name)
 424 {
 425         int gpio;
 426
 427         /* try with the gpio names as in the table (downstream bindings) */
 428         gpio = of_get_named_gpio(of_node, name, 0);
 429         if (gpio < 0) {
 430                 char name2[32];
 431
 432                 /* try with the gpio names as in the upstream bindings */
 433                 snprintf(name2, sizeof(name2), "%s-gpios", name);
 434                 gpio = of_get_named_gpio(of_node, name2, 0);
 435                 if (gpio < 0) {
 436                         char name3[32];
 437
 438                         /*
 439                          * try again after stripping out the "qcom,hdmi-tx"
 440                          * prefix. This is mainly to match "hpd-gpios" used
 441                          * in the upstream bindings
 442                          */
 443                         if (sscanf(name2, "qcom,hdmi-tx-%s", name3))
 444                                 gpio = of_get_named_gpio(of_node, name3, 0);
 445                 }
 446
 447                 if (gpio < 0) {
 448                         DBG("failed to get gpio: %s (%d)", name, gpio);
 449                         gpio = -1;
 450                 }
 451         }
 452         return gpio;
 453 }
 454
 455 /*
 456  * HDMI audio codec callbacks
 457  */
 458 static int msm_hdmi_audio_hw_params(struct device *dev, void *data,
 459                                     struct hdmi_codec_daifmt *daifmt,
 460                                     struct hdmi_codec_params *params)
 461 {
 462         struct hdmi *hdmi = dev_get_drvdata(dev);
 463         unsigned int chan;
 464         unsigned int channel_allocation = 0;
 465         unsigned int rate;
 466         unsigned int level_shift  = 0; /* 0dB */
 467         bool down_mix = false;
 468
 469         dev_dbg(dev, "%u Hz, %d bit, %d channels\n", params->sample_rate,
 470                  params->sample_width, params->cea.channels);
 471
 472         switch (params->cea.channels) {
 473         case 2:
 474                 /* FR and FL speakers */
 475                 channel_allocation  = 0;
 476                 chan = MSM_HDMI_AUDIO_CHANNEL_2;
 477                 break;
 478         case 4:
 479                 /* FC, LFE, FR and FL speakers */
 480                 channel_allocation  = 0x3;
 481                 chan = MSM_HDMI_AUDIO_CHANNEL_4;
 482                 break;
 483         case 6:
 484                 /* RR, RL, FC, LFE, FR and FL speakers */
 485                 channel_allocation  = 0x0B;
 486                 chan = MSM_HDMI_AUDIO_CHANNEL_6;
 487                 break;
 488         case 8:
 489                 /* FRC, FLC, RR, RL, FC, LFE, FR and FL speakers */
 490                 channel_allocation  = 0x1F;
 491                 chan = MSM_HDMI_AUDIO_CHANNEL_8;
 492                 break;
 493         default:
 494                 return -EINVAL;
 495         }
 496
 497         switch (params->sample_rate) {
 498         case 32000:
 499                 rate = HDMI_SAMPLE_RATE_32KHZ;
 500                 break;
 501         case 44100:
 502                 rate = HDMI_SAMPLE_RATE_44_1KHZ;
 503                 break;
 504         case 48000:
 505                 rate = HDMI_SAMPLE_RATE_48KHZ;
 506                 break;
 507         case 88200:
 508                 rate = HDMI_SAMPLE_RATE_88_2KHZ;
 509                 break;
 510         case 96000:
 511                 rate = HDMI_SAMPLE_RATE_96KHZ;
 512                 break;
 513         case 176400:
 514                 rate = HDMI_SAMPLE_RATE_176_4KHZ;
 515                 break;
 516         case 192000:
 517                 rate = HDMI_SAMPLE_RATE_192KHZ;
 518                 break;
 519         default:
 520                 dev_err(dev, "rate[%d] not supported!\n",
 521                         params->sample_rate);
 522                 return -EINVAL;
 523         }
 524
 525         msm_hdmi_audio_set_sample_rate(hdmi, rate);
 526         msm_hdmi_audio_info_setup(hdmi, 1, chan, channel_allocation,
 527                               level_shift, down_mix);
 528
 529         return 0;
 530 }
 531
 532 static void msm_hdmi_audio_shutdown(struct device *dev, void *data)
 533 {
 534         struct hdmi *hdmi = dev_get_drvdata(dev);
 535
 536         msm_hdmi_audio_info_setup(hdmi, 0, 0, 0, 0, 0);
 537 }
 538
 539 static const struct hdmi_codec_ops msm_hdmi_audio_codec_ops = {
 540         .hw_params = msm_hdmi_audio_hw_params,
 541         .audio_shutdown = msm_hdmi_audio_shutdown,
 542 };
 543
 544 static struct hdmi_codec_pdata codec_data = {
 545         .ops = &msm_hdmi_audio_codec_ops,
 546         .max_i2s_channels = 8,
 547         .i2s = 1,
 548 };
 549
 550 static int msm_hdmi_register_audio_driver(struct hdmi *hdmi, struct device *dev)
 551 {
 552         hdmi->audio_pdev = platform_device_register_data(dev,
 553                                                          HDMI_CODEC_DRV_NAME,
 554                                                          PLATFORM_DEVID_AUTO,
 555                                                          &codec_data,
 556                                                          sizeof(codec_data));
 557         return PTR_ERR_OR_ZERO(hdmi->audio_pdev);
 558 }
 559
 560 static int msm_hdmi_bind(struct device *dev, struct device *master, void *data)
 561 {
 562         struct drm_device *drm = dev_get_drvdata(master);
 563         struct msm_drm_private *priv = drm->dev_private;
 564         static struct hdmi_platform_config *hdmi_cfg;
 565         struct hdmi *hdmi;
 566         struct device_node *of_node = dev->of_node;
 567         int i, err;
 568
 569         hdmi_cfg = (struct hdmi_platform_config *)
 570                         of_device_get_match_data(dev);
 571         if (!hdmi_cfg) {
 572                 dev_err(dev, "unknown hdmi_cfg: %s\n", of_node->name);
 573                 return -ENXIO;
 574         }
 575
 576         hdmi_cfg->mmio_name     = "core_physical";
 577         hdmi_cfg->qfprom_mmio_name = "qfprom_physical";
 578
 579         for (i = 0; i < HDMI_MAX_NUM_GPIO; i++) {
 580                 hdmi_cfg->gpios[i].num = msm_hdmi_get_gpio(of_node,
 581                                                 msm_hdmi_gpio_pdata[i].name);
 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                 hdmi_cfg->gpios[i].label = msm_hdmi_gpio_pdata[i].label;
 585         }
 586
 587         dev->platform_data = hdmi_cfg;
 588
 589         hdmi = msm_hdmi_init(to_platform_device(dev));
 590         if (IS_ERR(hdmi))
 591                 return PTR_ERR(hdmi);
 592         priv->hdmi = hdmi;
 593
 594         err = msm_hdmi_register_audio_driver(hdmi, dev);
 595         if (err) {
 596                 DRM_ERROR("Failed to attach an audio codec %d\n", err);
 597                 hdmi->audio_pdev = NULL;
 598         }
 599
 600         return 0;
 601 }
 602
 603 static void msm_hdmi_unbind(struct device *dev, struct device *master,
 604                 void *data)
 605 {
 606         struct drm_device *drm = dev_get_drvdata(master);
 607         struct msm_drm_private *priv = drm->dev_private;
 608         if (priv->hdmi) {
 609                 if (priv->hdmi->audio_pdev)
 610                         platform_device_unregister(priv->hdmi->audio_pdev);
 611
 612                 msm_hdmi_destroy(priv->hdmi);
 613                 priv->hdmi = NULL;
 614         }
 615 }
 616
 617 static const struct component_ops msm_hdmi_ops = {
 618                 .bind   = msm_hdmi_bind,
 619                 .unbind = msm_hdmi_unbind,
 620 };
 621
 622 static int msm_hdmi_dev_probe(struct platform_device *pdev)
 623 {
 624         return component_add(&pdev->dev, &msm_hdmi_ops);
 625 }
 626
 627 static int msm_hdmi_dev_remove(struct platform_device *pdev)
 628 {
 629         component_del(&pdev->dev, &msm_hdmi_ops);
 630         return 0;
 631 }
 632
 633 static const struct of_device_id msm_hdmi_dt_match[] = {
 634         { .compatible = "qcom,hdmi-tx-8996", .data = &hdmi_tx_8996_config },
 635         { .compatible = "qcom,hdmi-tx-8994", .data = &hdmi_tx_8994_config },
 636         { .compatible = "qcom,hdmi-tx-8084", .data = &hdmi_tx_8084_config },
 637         { .compatible = "qcom,hdmi-tx-8974", .data = &hdmi_tx_8974_config },
 638         { .compatible = "qcom,hdmi-tx-8960", .data = &hdmi_tx_8960_config },
 639         { .compatible = "qcom,hdmi-tx-8660", .data = &hdmi_tx_8660_config },
 640         {}
 641 };
 642
 643 static struct platform_driver msm_hdmi_driver = {
 644         .probe = msm_hdmi_dev_probe,
 645         .remove = msm_hdmi_dev_remove,
 646         .driver = {
 647                 .name = "hdmi_msm",
 648                 .of_match_table = msm_hdmi_dt_match,
 649         },
 650 };
 651
 652 void __init msm_hdmi_register(void)
 653 {
 654         msm_hdmi_phy_driver_register();
 655         platform_driver_register(&msm_hdmi_driver);
 656 }
 657
 658 void __exit msm_hdmi_unregister(void)
 659 {
 660         platform_driver_unregister(&msm_hdmi_driver);
 661         msm_hdmi_phy_driver_unregister();
 662 }