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_kcalloc(&pdev->dev,
 165                                       config->hpd_reg_cnt,
 166                                       sizeof(hdmi->hpd_regs[0]),
 167                                       GFP_KERNEL);
 168         if (!hdmi->hpd_regs) {
 169                 ret = -ENOMEM;
 170                 goto fail;
 171         }
 172         for (i = 0; i < config->hpd_reg_cnt; i++) {
 173                 struct regulator *reg;
 174
 175                 reg = devm_regulator_get(&pdev->dev,
 176                                 config->hpd_reg_names[i]);
 177                 if (IS_ERR(reg)) {
 178                         ret = PTR_ERR(reg);
 179                         dev_err(&pdev->dev, "failed to get hpd regulator: %s (%d)\n",
 180                                         config->hpd_reg_names[i], ret);
 181                         goto fail;
 182                 }
 183
 184                 hdmi->hpd_regs[i] = reg;
 185         }
 186
 187         hdmi->pwr_regs = devm_kcalloc(&pdev->dev,
 188                                       config->pwr_reg_cnt,
 189                                       sizeof(hdmi->pwr_regs[0]),
 190                                       GFP_KERNEL);
 191         if (!hdmi->pwr_regs) {
 192                 ret = -ENOMEM;
 193                 goto fail;
 194         }
 195         for (i = 0; i < config->pwr_reg_cnt; i++) {
 196                 struct regulator *reg;
 197
 198                 reg = devm_regulator_get(&pdev->dev,
 199                                 config->pwr_reg_names[i]);
 200                 if (IS_ERR(reg)) {
 201                         ret = PTR_ERR(reg);
 202                         dev_err(&pdev->dev, "failed to get pwr regulator: %s (%d)\n",
 203                                         config->pwr_reg_names[i], ret);
 204                         goto fail;
 205                 }
 206
 207                 hdmi->pwr_regs[i] = reg;
 208         }
 209
 210         hdmi->hpd_clks = devm_kcalloc(&pdev->dev,
 211                                       config->hpd_clk_cnt,
 212                                       sizeof(hdmi->hpd_clks[0]),
 213                                       GFP_KERNEL);
 214         if (!hdmi->hpd_clks) {
 215                 ret = -ENOMEM;
 216                 goto fail;
 217         }
 218         for (i = 0; i < config->hpd_clk_cnt; i++) {
 219                 struct clk *clk;
 220
 221                 clk = msm_clk_get(pdev, config->hpd_clk_names[i]);
 222                 if (IS_ERR(clk)) {
 223                         ret = PTR_ERR(clk);
 224                         dev_err(&pdev->dev, "failed to get hpd clk: %s (%d)\n",
 225                                         config->hpd_clk_names[i], ret);
 226                         goto fail;
 227                 }
 228
 229                 hdmi->hpd_clks[i] = clk;
 230         }
 231
 232         hdmi->pwr_clks = devm_kcalloc(&pdev->dev,
 233                                       config->pwr_clk_cnt,
 234                                       sizeof(hdmi->pwr_clks[0]),
 235                                       GFP_KERNEL);
 236         if (!hdmi->pwr_clks) {
 237                 ret = -ENOMEM;
 238                 goto fail;
 239         }
 240         for (i = 0; i < config->pwr_clk_cnt; i++) {
 241                 struct clk *clk;
 242
 243                 clk = msm_clk_get(pdev, config->pwr_clk_names[i]);
 244                 if (IS_ERR(clk)) {
 245                         ret = PTR_ERR(clk);
 246                         dev_err(&pdev->dev, "failed to get pwr clk: %s (%d)\n",
 247                                         config->pwr_clk_names[i], ret);
 248                         goto fail;
 249                 }
 250
 251                 hdmi->pwr_clks[i] = clk;
 252         }
 253
 254         pm_runtime_enable(&pdev->dev);
 255
 256         hdmi->workq = alloc_ordered_workqueue("msm_hdmi", 0);
 257
 258         hdmi->i2c = msm_hdmi_i2c_init(hdmi);
 259         if (IS_ERR(hdmi->i2c)) {
 260                 ret = PTR_ERR(hdmi->i2c);
 261                 dev_err(&pdev->dev, "failed to get i2c: %d\n", ret);
 262                 hdmi->i2c = NULL;
 263                 goto fail;
 264         }
 265
 266         ret = msm_hdmi_get_phy(hdmi);
 267         if (ret) {
 268                 dev_err(&pdev->dev, "failed to get phy\n");
 269                 goto fail;
 270         }
 271
 272         hdmi->hdcp_ctrl = msm_hdmi_hdcp_init(hdmi);
 273         if (IS_ERR(hdmi->hdcp_ctrl)) {
 274                 dev_warn(&pdev->dev, "failed to init hdcp: disabled\n");
 275                 hdmi->hdcp_ctrl = NULL;
 276         }
 277
 278         return hdmi;
 279
 280 fail:
 281         if (hdmi)
 282                 msm_hdmi_destroy(hdmi);
 283
 284         return ERR_PTR(ret);
 285 }
 286
 287 /* Second part of initialization, the drm/kms level modeset_init,
 288  * constructs/initializes mode objects, etc, is called from master
 289  * driver (not hdmi sub-device's probe/bind!)
 290  *
 291  * Any resource (regulator/clk/etc) which could be missing at boot
 292  * should be handled in msm_hdmi_init() so that failure happens from
 293  * hdmi sub-device's probe.
 294  */
 295 int msm_hdmi_modeset_init(struct hdmi *hdmi,
 296                 struct drm_device *dev, struct drm_encoder *encoder)
 297 {
 298         struct msm_drm_private *priv = dev->dev_private;
 299         struct platform_device *pdev = hdmi->pdev;
 300         int ret;
 301
 302         if (priv->num_bridges == ARRAY_SIZE(priv->bridges)) {
 303                 DRM_DEV_ERROR(dev->dev, "too many bridges\n");
 304                 return -ENOSPC;
 305         }
 306
 307         hdmi->dev = dev;
 308         hdmi->encoder = encoder;
 309
 310         hdmi_audio_infoframe_init(&hdmi->audio.infoframe);
 311
 312         hdmi->bridge = msm_hdmi_bridge_init(hdmi);
 313         if (IS_ERR(hdmi->bridge)) {
 314                 ret = PTR_ERR(hdmi->bridge);
 315                 dev_err(dev->dev, "failed to create HDMI bridge: %d\n", ret);
 316                 hdmi->bridge = NULL;
 317                 goto fail;
 318         }
 319
 320         hdmi->connector = msm_hdmi_connector_init(hdmi);
 321         if (IS_ERR(hdmi->connector)) {
 322                 ret = PTR_ERR(hdmi->connector);
 323                 dev_err(dev->dev, "failed to create HDMI connector: %d\n", ret);
 324                 hdmi->connector = NULL;
 325                 goto fail;
 326         }
 327
 328         hdmi->irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
 329         if (hdmi->irq < 0) {
 330                 ret = hdmi->irq;
 331                 dev_err(dev->dev, "failed to get irq: %d\n", ret);
 332                 goto fail;
 333         }
 334
 335         ret = devm_request_irq(&pdev->dev, hdmi->irq,
 336                         msm_hdmi_irq, IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
 337                         "hdmi_isr", hdmi);
 338         if (ret < 0) {
 339                 dev_err(dev->dev, "failed to request IRQ%u: %d\n",
 340                                 hdmi->irq, ret);
 341                 goto fail;
 342         }
 343
 344         ret = msm_hdmi_hpd_enable(hdmi->connector);
 345         if (ret < 0) {
 346                 DRM_DEV_ERROR(&hdmi->pdev->dev, "failed to enable HPD: %d\n", ret);
 347                 goto fail;
 348         }
 349
 350         encoder->bridge = hdmi->bridge;
 351
 352         priv->bridges[priv->num_bridges++]       = hdmi->bridge;
 353         priv->connectors[priv->num_connectors++] = hdmi->connector;
 354
 355         platform_set_drvdata(pdev, hdmi);
 356
 357         return 0;
 358
 359 fail:
 360         /* bridge is normally destroyed by drm: */
 361         if (hdmi->bridge) {
 362                 msm_hdmi_bridge_destroy(hdmi->bridge);
 363                 hdmi->bridge = NULL;
 364         }
 365         if (hdmi->connector) {
 366                 hdmi->connector->funcs->destroy(hdmi->connector);
 367                 hdmi->connector = NULL;
 368         }
 369
 370         return ret;
 371 }
 372
 373 /*
 374  * The hdmi device:
 375  */
 376
 377 #define HDMI_CFG(item, entry) \
 378         .item ## _names = item ##_names_ ## entry, \
 379         .item ## _cnt   = ARRAY_SIZE(item ## _names_ ## entry)
 380
 381 static const char *pwr_reg_names_none[] = {};
 382 static const char *hpd_reg_names_none[] = {};
 383
 384 static struct hdmi_platform_config hdmi_tx_8660_config;
 385
 386 static const char *hpd_reg_names_8960[] = {"core-vdda", "hdmi-mux"};
 387 static const char *hpd_clk_names_8960[] = {"core", "master_iface", "slave_iface"};
 388
 389 static struct hdmi_platform_config hdmi_tx_8960_config = {
 390                 HDMI_CFG(hpd_reg, 8960),
 391                 HDMI_CFG(hpd_clk, 8960),
 392 };
 393
 394 static const char *pwr_reg_names_8x74[] = {"core-vdda", "core-vcc"};
 395 static const char *hpd_reg_names_8x74[] = {"hpd-gdsc", "hpd-5v"};
 396 static const char *pwr_clk_names_8x74[] = {"extp", "alt_iface"};
 397 static const char *hpd_clk_names_8x74[] = {"iface", "core", "mdp_core"};
 398 static unsigned long hpd_clk_freq_8x74[] = {0, 19200000, 0};
 399
 400 static struct hdmi_platform_config hdmi_tx_8974_config = {
 401                 HDMI_CFG(pwr_reg, 8x74),
 402                 HDMI_CFG(hpd_reg, 8x74),
 403                 HDMI_CFG(pwr_clk, 8x74),
 404                 HDMI_CFG(hpd_clk, 8x74),
 405                 .hpd_freq      = hpd_clk_freq_8x74,
 406 };
 407
 408 static const char *hpd_reg_names_8084[] = {"hpd-gdsc", "hpd-5v", "hpd-5v-en"};
 409
 410 static struct hdmi_platform_config hdmi_tx_8084_config = {
 411                 HDMI_CFG(pwr_reg, 8x74),
 412                 HDMI_CFG(hpd_reg, 8084),
 413                 HDMI_CFG(pwr_clk, 8x74),
 414                 HDMI_CFG(hpd_clk, 8x74),
 415                 .hpd_freq      = hpd_clk_freq_8x74,
 416 };
 417
 418 static struct hdmi_platform_config hdmi_tx_8994_config = {
 419                 HDMI_CFG(pwr_reg, 8x74),
 420                 HDMI_CFG(hpd_reg, none),
 421                 HDMI_CFG(pwr_clk, 8x74),
 422                 HDMI_CFG(hpd_clk, 8x74),
 423                 .hpd_freq      = hpd_clk_freq_8x74,
 424 };
 425
 426 static struct hdmi_platform_config hdmi_tx_8996_config = {
 427                 HDMI_CFG(pwr_reg, none),
 428                 HDMI_CFG(hpd_reg, none),
 429                 HDMI_CFG(pwr_clk, 8x74),
 430                 HDMI_CFG(hpd_clk, 8x74),
 431                 .hpd_freq      = hpd_clk_freq_8x74,
 432 };
 433
 434 static const struct {
 435         const char *name;
 436         const bool output;
 437         const int value;
 438         const char *label;
 439 } msm_hdmi_gpio_pdata[] = {
 440         { "qcom,hdmi-tx-ddc-clk", true, 1, "HDMI_DDC_CLK" },
 441         { "qcom,hdmi-tx-ddc-data", true, 1, "HDMI_DDC_DATA" },
 442         { "qcom,hdmi-tx-hpd", false, 1, "HDMI_HPD" },
 443         { "qcom,hdmi-tx-mux-en", true, 1, "HDMI_MUX_EN" },
 444         { "qcom,hdmi-tx-mux-sel", true, 0, "HDMI_MUX_SEL" },
 445         { "qcom,hdmi-tx-mux-lpm", true, 1, "HDMI_MUX_LPM" },
 446 };
 447
 448 static int msm_hdmi_get_gpio(struct device_node *of_node, const char *name)
 449 {
 450         int gpio;
 451
 452         /* try with the gpio names as in the table (downstream bindings) */
 453         gpio = of_get_named_gpio(of_node, name, 0);
 454         if (gpio < 0) {
 455                 char name2[32];
 456
 457                 /* try with the gpio names as in the upstream bindings */
 458                 snprintf(name2, sizeof(name2), "%s-gpios", name);
 459                 gpio = of_get_named_gpio(of_node, name2, 0);
 460                 if (gpio < 0) {
 461                         char name3[32];
 462
 463                         /*
 464                          * try again after stripping out the "qcom,hdmi-tx"
 465                          * prefix. This is mainly to match "hpd-gpios" used
 466                          * in the upstream bindings
 467                          */
 468                         if (sscanf(name2, "qcom,hdmi-tx-%s", name3))
 469                                 gpio = of_get_named_gpio(of_node, name3, 0);
 470                 }
 471
 472                 if (gpio < 0) {
 473                         DBG("failed to get gpio: %s (%d)", name, gpio);
 474                         gpio = -1;
 475                 }
 476         }
 477         return gpio;
 478 }
 479
 480 /*
 481  * HDMI audio codec callbacks
 482  */
 483 static int msm_hdmi_audio_hw_params(struct device *dev, void *data,
 484                                     struct hdmi_codec_daifmt *daifmt,
 485                                     struct hdmi_codec_params *params)
 486 {
 487         struct hdmi *hdmi = dev_get_drvdata(dev);
 488         unsigned int chan;
 489         unsigned int channel_allocation = 0;
 490         unsigned int rate;
 491         unsigned int level_shift  = 0; /* 0dB */
 492         bool down_mix = false;
 493
 494         dev_dbg(dev, "%u Hz, %d bit, %d channels\n", params->sample_rate,
 495                  params->sample_width, params->cea.channels);
 496
 497         switch (params->cea.channels) {
 498         case 2:
 499                 /* FR and FL speakers */
 500                 channel_allocation  = 0;
 501                 chan = MSM_HDMI_AUDIO_CHANNEL_2;
 502                 break;
 503         case 4:
 504                 /* FC, LFE, FR and FL speakers */
 505                 channel_allocation  = 0x3;
 506                 chan = MSM_HDMI_AUDIO_CHANNEL_4;
 507                 break;
 508         case 6:
 509                 /* RR, RL, FC, LFE, FR and FL speakers */
 510                 channel_allocation  = 0x0B;
 511                 chan = MSM_HDMI_AUDIO_CHANNEL_6;
 512                 break;
 513         case 8:
 514                 /* FRC, FLC, RR, RL, FC, LFE, FR and FL speakers */
 515                 channel_allocation  = 0x1F;
 516                 chan = MSM_HDMI_AUDIO_CHANNEL_8;
 517                 break;
 518         default:
 519                 return -EINVAL;
 520         }
 521
 522         switch (params->sample_rate) {
 523         case 32000:
 524                 rate = HDMI_SAMPLE_RATE_32KHZ;
 525                 break;
 526         case 44100:
 527                 rate = HDMI_SAMPLE_RATE_44_1KHZ;
 528                 break;
 529         case 48000:
 530                 rate = HDMI_SAMPLE_RATE_48KHZ;
 531                 break;
 532         case 88200:
 533                 rate = HDMI_SAMPLE_RATE_88_2KHZ;
 534                 break;
 535         case 96000:
 536                 rate = HDMI_SAMPLE_RATE_96KHZ;
 537                 break;
 538         case 176400:
 539                 rate = HDMI_SAMPLE_RATE_176_4KHZ;
 540                 break;
 541         case 192000:
 542                 rate = HDMI_SAMPLE_RATE_192KHZ;
 543                 break;
 544         default:
 545                 dev_err(dev, "rate[%d] not supported!\n",
 546                         params->sample_rate);
 547                 return -EINVAL;
 548         }
 549
 550         msm_hdmi_audio_set_sample_rate(hdmi, rate);
 551         msm_hdmi_audio_info_setup(hdmi, 1, chan, channel_allocation,
 552                               level_shift, down_mix);
 553
 554         return 0;
 555 }
 556
 557 static void msm_hdmi_audio_shutdown(struct device *dev, void *data)
 558 {
 559         struct hdmi *hdmi = dev_get_drvdata(dev);
 560
 561         msm_hdmi_audio_info_setup(hdmi, 0, 0, 0, 0, 0);
 562 }
 563
 564 static const struct hdmi_codec_ops msm_hdmi_audio_codec_ops = {
 565         .hw_params = msm_hdmi_audio_hw_params,
 566         .audio_shutdown = msm_hdmi_audio_shutdown,
 567 };
 568
 569 static struct hdmi_codec_pdata codec_data = {
 570         .ops = &msm_hdmi_audio_codec_ops,
 571         .max_i2s_channels = 8,
 572         .i2s = 1,
 573 };
 574
 575 static int msm_hdmi_register_audio_driver(struct hdmi *hdmi, struct device *dev)
 576 {
 577         hdmi->audio_pdev = platform_device_register_data(dev,
 578                                                          HDMI_CODEC_DRV_NAME,
 579                                                          PLATFORM_DEVID_AUTO,
 580                                                          &codec_data,
 581                                                          sizeof(codec_data));
 582         return PTR_ERR_OR_ZERO(hdmi->audio_pdev);
 583 }
 584
 585 static int msm_hdmi_bind(struct device *dev, struct device *master, void *data)
 586 {
 587         struct drm_device *drm = dev_get_drvdata(master);
 588         struct msm_drm_private *priv = drm->dev_private;
 589         static struct hdmi_platform_config *hdmi_cfg;
 590         struct hdmi *hdmi;
 591         struct device_node *of_node = dev->of_node;
 592         int i, err;
 593
 594         hdmi_cfg = (struct hdmi_platform_config *)
 595                         of_device_get_match_data(dev);
 596         if (!hdmi_cfg) {
 597                 dev_err(dev, "unknown hdmi_cfg: %s\n", of_node->name);
 598                 return -ENXIO;
 599         }
 600
 601         hdmi_cfg->mmio_name     = "core_physical";
 602         hdmi_cfg->qfprom_mmio_name = "qfprom_physical";
 603
 604         for (i = 0; i < HDMI_MAX_NUM_GPIO; i++) {
 605                 hdmi_cfg->gpios[i].num = msm_hdmi_get_gpio(of_node,
 606                                                 msm_hdmi_gpio_pdata[i].name);
 607                 hdmi_cfg->gpios[i].output = msm_hdmi_gpio_pdata[i].output;
 608                 hdmi_cfg->gpios[i].value = msm_hdmi_gpio_pdata[i].value;
 609                 hdmi_cfg->gpios[i].label = msm_hdmi_gpio_pdata[i].label;
 610         }
 611
 612         dev->platform_data = hdmi_cfg;
 613
 614         hdmi = msm_hdmi_init(to_platform_device(dev));
 615         if (IS_ERR(hdmi))
 616                 return PTR_ERR(hdmi);
 617         priv->hdmi = hdmi;
 618
 619         err = msm_hdmi_register_audio_driver(hdmi, dev);
 620         if (err) {
 621                 DRM_ERROR("Failed to attach an audio codec %d\n", err);
 622                 hdmi->audio_pdev = NULL;
 623         }
 624
 625         return 0;
 626 }
 627
 628 static void msm_hdmi_unbind(struct device *dev, struct device *master,
 629                 void *data)
 630 {
 631         struct drm_device *drm = dev_get_drvdata(master);
 632         struct msm_drm_private *priv = drm->dev_private;
 633         if (priv->hdmi) {
 634                 if (priv->hdmi->audio_pdev)
 635                         platform_device_unregister(priv->hdmi->audio_pdev);
 636
 637                 msm_hdmi_destroy(priv->hdmi);
 638                 priv->hdmi = NULL;
 639         }
 640 }
 641
 642 static const struct component_ops msm_hdmi_ops = {
 643                 .bind   = msm_hdmi_bind,
 644                 .unbind = msm_hdmi_unbind,
 645 };
 646
 647 static int msm_hdmi_dev_probe(struct platform_device *pdev)
 648 {
 649         return component_add(&pdev->dev, &msm_hdmi_ops);
 650 }
 651
 652 static int msm_hdmi_dev_remove(struct platform_device *pdev)
 653 {
 654         component_del(&pdev->dev, &msm_hdmi_ops);
 655         return 0;
 656 }
 657
 658 static const struct of_device_id msm_hdmi_dt_match[] = {
 659         { .compatible = "qcom,hdmi-tx-8996", .data = &hdmi_tx_8996_config },
 660         { .compatible = "qcom,hdmi-tx-8994", .data = &hdmi_tx_8994_config },
 661         { .compatible = "qcom,hdmi-tx-8084", .data = &hdmi_tx_8084_config },
 662         { .compatible = "qcom,hdmi-tx-8974", .data = &hdmi_tx_8974_config },
 663         { .compatible = "qcom,hdmi-tx-8960", .data = &hdmi_tx_8960_config },
 664         { .compatible = "qcom,hdmi-tx-8660", .data = &hdmi_tx_8660_config },
 665         {}
 666 };
 667
 668 static struct platform_driver msm_hdmi_driver = {
 669         .probe = msm_hdmi_dev_probe,
 670         .remove = msm_hdmi_dev_remove,
 671         .driver = {
 672                 .name = "hdmi_msm",
 673                 .of_match_table = msm_hdmi_dt_match,
 674         },
 675 };
 676
 677 void __init msm_hdmi_register(void)
 678 {
 679         msm_hdmi_phy_driver_register();
 680         platform_driver_register(&msm_hdmi_driver);
 681 }
 682
 683 void __exit msm_hdmi_unregister(void)
 684 {
 685         platform_driver_unregister(&msm_hdmi_driver);
 686         msm_hdmi_phy_driver_unregister();
 687 }