drivers/video/fbdev/omap2/omapfb/dss/hdmi4.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * HDMI interface DSS driver for TI's OMAP4 family of SoCs.
   4  * Copyright (C) 2010-2011 Texas Instruments Incorporated - https://www.ti.com/
   5  * Authors: Yong Zhi
   6  *      Mythri pk <mythripk@ti.com>
   7  */
   8
   9 #define DSS_SUBSYS_NAME "HDMI"
  10
  11 #include <linux/kernel.h>
  12 #include <linux/module.h>
  13 #include <linux/err.h>
  14 #include <linux/io.h>
  15 #include <linux/interrupt.h>
  16 #include <linux/mutex.h>
  17 #include <linux/delay.h>
  18 #include <linux/string.h>
  19 #include <linux/platform_device.h>
  20 #include <linux/pm_runtime.h>
  21 #include <linux/clk.h>
  22 #include <linux/of.h>
  23 #include <linux/of_graph.h>
  24 #include <linux/regulator/consumer.h>
  25 #include <linux/component.h>
  26 #include <video/omapfb_dss.h>
  27 #include <sound/omap-hdmi-audio.h>
  28
  29 #include "hdmi4_core.h"
  30 #include "dss.h"
  31 #include "dss_features.h"
  32 #include "hdmi.h"
  33
  34 static struct omap_hdmi hdmi;
  35
  36 static int hdmi_runtime_get(void)
  37 {
  38         int r;
  39
  40         DSSDBG("hdmi_runtime_get\n");
  41
  42         r = pm_runtime_resume_and_get(&hdmi.pdev->dev);
  43         if (WARN_ON(r < 0))
  44                 return r;
  45
  46         return 0;
  47 }
  48
  49 static void hdmi_runtime_put(void)
  50 {
  51         int r;
  52
  53         DSSDBG("hdmi_runtime_put\n");
  54
  55         r = pm_runtime_put_sync(&hdmi.pdev->dev);
  56         WARN_ON(r < 0 && r != -ENOSYS);
  57 }
  58
  59 static irqreturn_t hdmi_irq_handler(int irq, void *data)
  60 {
  61         struct hdmi_wp_data *wp = data;
  62         u32 irqstatus;
  63
  64         irqstatus = hdmi_wp_get_irqstatus(wp);
  65         hdmi_wp_set_irqstatus(wp, irqstatus);
  66
  67         if ((irqstatus & HDMI_IRQ_LINK_CONNECT) &&
  68                         irqstatus & HDMI_IRQ_LINK_DISCONNECT) {
  69                 /*
  70                  * If we get both connect and disconnect interrupts at the same
  71                  * time, turn off the PHY, clear interrupts, and restart, which
  72                  * raises connect interrupt if a cable is connected, or nothing
  73                  * if cable is not connected.
  74                  */
  75                 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_OFF);
  76
  77                 hdmi_wp_set_irqstatus(wp, HDMI_IRQ_LINK_CONNECT |
  78                                 HDMI_IRQ_LINK_DISCONNECT);
  79
  80                 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
  81         } else if (irqstatus & HDMI_IRQ_LINK_CONNECT) {
  82                 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_TXON);
  83         } else if (irqstatus & HDMI_IRQ_LINK_DISCONNECT) {
  84                 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
  85         }
  86
  87         return IRQ_HANDLED;
  88 }
  89
  90 static int hdmi_init_regulator(void)
  91 {
  92         struct regulator *reg;
  93
  94         if (hdmi.vdda_reg != NULL)
  95                 return 0;
  96
  97         reg = devm_regulator_get(&hdmi.pdev->dev, "vdda");
  98
  99         if (IS_ERR(reg)) {
 100                 if (PTR_ERR(reg) != -EPROBE_DEFER)
 101                         DSSERR("can't get VDDA regulator\n");
 102                 return PTR_ERR(reg);
 103         }
 104
 105         hdmi.vdda_reg = reg;
 106
 107         return 0;
 108 }
 109
 110 static int hdmi_power_on_core(struct omap_dss_device *dssdev)
 111 {
 112         int r;
 113
 114         r = regulator_enable(hdmi.vdda_reg);
 115         if (r)
 116                 return r;
 117
 118         r = hdmi_runtime_get();
 119         if (r)
 120                 goto err_runtime_get;
 121
 122         /* Make selection of HDMI in DSS */
 123         dss_select_hdmi_venc_clk_source(DSS_HDMI_M_PCLK);
 124
 125         hdmi.core_enabled = true;
 126
 127         return 0;
 128
 129 err_runtime_get:
 130         regulator_disable(hdmi.vdda_reg);
 131
 132         return r;
 133 }
 134
 135 static void hdmi_power_off_core(struct omap_dss_device *dssdev)
 136 {
 137         hdmi.core_enabled = false;
 138
 139         hdmi_runtime_put();
 140         regulator_disable(hdmi.vdda_reg);
 141 }
 142
 143 static int hdmi_power_on_full(struct omap_dss_device *dssdev)
 144 {
 145         int r;
 146         struct omap_video_timings *p;
 147         struct omap_overlay_manager *mgr = hdmi.output.manager;
 148         struct hdmi_wp_data *wp = &hdmi.wp;
 149         struct dss_pll_clock_info hdmi_cinfo = { 0 };
 150
 151         r = hdmi_power_on_core(dssdev);
 152         if (r)
 153                 return r;
 154
 155         /* disable and clear irqs */
 156         hdmi_wp_clear_irqenable(wp, 0xffffffff);
 157         hdmi_wp_set_irqstatus(wp, 0xffffffff);
 158
 159         p = &hdmi.cfg.timings;
 160
 161         DSSDBG("hdmi_power_on x_res= %d y_res = %d\n", p->x_res, p->y_res);
 162
 163         hdmi_pll_compute(&hdmi.pll, p->pixelclock, &hdmi_cinfo);
 164
 165         r = dss_pll_enable(&hdmi.pll.pll);
 166         if (r) {
 167                 DSSERR("Failed to enable PLL\n");
 168                 goto err_pll_enable;
 169         }
 170
 171         r = dss_pll_set_config(&hdmi.pll.pll, &hdmi_cinfo);
 172         if (r) {
 173                 DSSERR("Failed to configure PLL\n");
 174                 goto err_pll_cfg;
 175         }
 176
 177         r = hdmi_phy_configure(&hdmi.phy, hdmi_cinfo.clkdco,
 178                 hdmi_cinfo.clkout[0]);
 179         if (r) {
 180                 DSSDBG("Failed to configure PHY\n");
 181                 goto err_phy_cfg;
 182         }
 183
 184         r = hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
 185         if (r)
 186                 goto err_phy_pwr;
 187
 188         hdmi4_configure(&hdmi.core, &hdmi.wp, &hdmi.cfg);
 189
 190         /* bypass TV gamma table */
 191         dispc_enable_gamma_table(0);
 192
 193         /* tv size */
 194         dss_mgr_set_timings(mgr, p);
 195
 196         r = hdmi_wp_video_start(&hdmi.wp);
 197         if (r)
 198                 goto err_vid_enable;
 199
 200         r = dss_mgr_enable(mgr);
 201         if (r)
 202                 goto err_mgr_enable;
 203
 204         hdmi_wp_set_irqenable(wp,
 205                 HDMI_IRQ_LINK_CONNECT | HDMI_IRQ_LINK_DISCONNECT);
 206
 207         return 0;
 208
 209 err_mgr_enable:
 210         hdmi_wp_video_stop(&hdmi.wp);
 211 err_vid_enable:
 212         hdmi_wp_set_phy_pwr(&hdmi.wp, HDMI_PHYPWRCMD_OFF);
 213 err_phy_pwr:
 214 err_phy_cfg:
 215 err_pll_cfg:
 216         dss_pll_disable(&hdmi.pll.pll);
 217 err_pll_enable:
 218         hdmi_power_off_core(dssdev);
 219         return -EIO;
 220 }
 221
 222 static void hdmi_power_off_full(struct omap_dss_device *dssdev)
 223 {
 224         struct omap_overlay_manager *mgr = hdmi.output.manager;
 225
 226         hdmi_wp_clear_irqenable(&hdmi.wp, 0xffffffff);
 227
 228         dss_mgr_disable(mgr);
 229
 230         hdmi_wp_video_stop(&hdmi.wp);
 231
 232         hdmi_wp_set_phy_pwr(&hdmi.wp, HDMI_PHYPWRCMD_OFF);
 233
 234         dss_pll_disable(&hdmi.pll.pll);
 235
 236         hdmi_power_off_core(dssdev);
 237 }
 238
 239 static int hdmi_display_check_timing(struct omap_dss_device *dssdev,
 240                                         struct omap_video_timings *timings)
 241 {
 242         struct omap_dss_device *out = &hdmi.output;
 243
 244         if (!dispc_mgr_timings_ok(out->dispc_channel, timings))
 245                 return -EINVAL;
 246
 247         return 0;
 248 }
 249
 250 static void hdmi_display_set_timing(struct omap_dss_device *dssdev,
 251                 struct omap_video_timings *timings)
 252 {
 253         mutex_lock(&hdmi.lock);
 254
 255         hdmi.cfg.timings = *timings;
 256
 257         dispc_set_tv_pclk(timings->pixelclock);
 258
 259         mutex_unlock(&hdmi.lock);
 260 }
 261
 262 static void hdmi_display_get_timings(struct omap_dss_device *dssdev,
 263                 struct omap_video_timings *timings)
 264 {
 265         *timings = hdmi.cfg.timings;
 266 }
 267
 268 static void hdmi_dump_regs(struct seq_file *s)
 269 {
 270         mutex_lock(&hdmi.lock);
 271
 272         if (hdmi_runtime_get()) {
 273                 mutex_unlock(&hdmi.lock);
 274                 return;
 275         }
 276
 277         hdmi_wp_dump(&hdmi.wp, s);
 278         hdmi_pll_dump(&hdmi.pll, s);
 279         hdmi_phy_dump(&hdmi.phy, s);
 280         hdmi4_core_dump(&hdmi.core, s);
 281
 282         hdmi_runtime_put();
 283         mutex_unlock(&hdmi.lock);
 284 }
 285
 286 static int read_edid(u8 *buf, int len)
 287 {
 288         int r;
 289
 290         mutex_lock(&hdmi.lock);
 291
 292         r = hdmi_runtime_get();
 293         BUG_ON(r);
 294
 295         r = hdmi4_read_edid(&hdmi.core,  buf, len);
 296
 297         hdmi_runtime_put();
 298         mutex_unlock(&hdmi.lock);
 299
 300         return r;
 301 }
 302
 303 static void hdmi_start_audio_stream(struct omap_hdmi *hd)
 304 {
 305         hdmi_wp_audio_enable(&hd->wp, true);
 306         hdmi4_audio_start(&hd->core, &hd->wp);
 307 }
 308
 309 static void hdmi_stop_audio_stream(struct omap_hdmi *hd)
 310 {
 311         hdmi4_audio_stop(&hd->core, &hd->wp);
 312         hdmi_wp_audio_enable(&hd->wp, false);
 313 }
 314
 315 static int hdmi_display_enable(struct omap_dss_device *dssdev)
 316 {
 317         struct omap_dss_device *out = &hdmi.output;
 318         unsigned long flags;
 319         int r = 0;
 320
 321         DSSDBG("ENTER hdmi_display_enable\n");
 322
 323         mutex_lock(&hdmi.lock);
 324
 325         if (out->manager == NULL) {
 326                 DSSERR("failed to enable display: no output/manager\n");
 327                 r = -ENODEV;
 328                 goto err0;
 329         }
 330
 331         r = hdmi_power_on_full(dssdev);
 332         if (r) {
 333                 DSSERR("failed to power on device\n");
 334                 goto err0;
 335         }
 336
 337         if (hdmi.audio_configured) {
 338                 r = hdmi4_audio_config(&hdmi.core, &hdmi.wp, &hdmi.audio_config,
 339                                        hdmi.cfg.timings.pixelclock);
 340                 if (r) {
 341                         DSSERR("Error restoring audio configuration: %d", r);
 342                         hdmi.audio_abort_cb(&hdmi.pdev->dev);
 343                         hdmi.audio_configured = false;
 344                 }
 345         }
 346
 347         spin_lock_irqsave(&hdmi.audio_playing_lock, flags);
 348         if (hdmi.audio_configured && hdmi.audio_playing)
 349                 hdmi_start_audio_stream(&hdmi);
 350         hdmi.display_enabled = true;
 351         spin_unlock_irqrestore(&hdmi.audio_playing_lock, flags);
 352
 353         mutex_unlock(&hdmi.lock);
 354         return 0;
 355
 356 err0:
 357         mutex_unlock(&hdmi.lock);
 358         return r;
 359 }
 360
 361 static void hdmi_display_disable(struct omap_dss_device *dssdev)
 362 {
 363         unsigned long flags;
 364
 365         DSSDBG("Enter hdmi_display_disable\n");
 366
 367         mutex_lock(&hdmi.lock);
 368
 369         spin_lock_irqsave(&hdmi.audio_playing_lock, flags);
 370         hdmi_stop_audio_stream(&hdmi);
 371         hdmi.display_enabled = false;
 372         spin_unlock_irqrestore(&hdmi.audio_playing_lock, flags);
 373
 374         hdmi_power_off_full(dssdev);
 375
 376         mutex_unlock(&hdmi.lock);
 377 }
 378
 379 static int hdmi_core_enable(struct omap_dss_device *dssdev)
 380 {
 381         int r = 0;
 382
 383         DSSDBG("ENTER omapdss_hdmi_core_enable\n");
 384
 385         mutex_lock(&hdmi.lock);
 386
 387         r = hdmi_power_on_core(dssdev);
 388         if (r) {
 389                 DSSERR("failed to power on device\n");
 390                 goto err0;
 391         }
 392
 393         mutex_unlock(&hdmi.lock);
 394         return 0;
 395
 396 err0:
 397         mutex_unlock(&hdmi.lock);
 398         return r;
 399 }
 400
 401 static void hdmi_core_disable(struct omap_dss_device *dssdev)
 402 {
 403         DSSDBG("Enter omapdss_hdmi_core_disable\n");
 404
 405         mutex_lock(&hdmi.lock);
 406
 407         hdmi_power_off_core(dssdev);
 408
 409         mutex_unlock(&hdmi.lock);
 410 }
 411
 412 static int hdmi_connect(struct omap_dss_device *dssdev,
 413                 struct omap_dss_device *dst)
 414 {
 415         struct omap_overlay_manager *mgr;
 416         int r;
 417
 418         r = hdmi_init_regulator();
 419         if (r)
 420                 return r;
 421
 422         mgr = omap_dss_get_overlay_manager(dssdev->dispc_channel);
 423         if (!mgr)
 424                 return -ENODEV;
 425
 426         r = dss_mgr_connect(mgr, dssdev);
 427         if (r)
 428                 return r;
 429
 430         r = omapdss_output_set_device(dssdev, dst);
 431         if (r) {
 432                 DSSERR("failed to connect output to new device: %s\n",
 433                                 dst->name);
 434                 dss_mgr_disconnect(mgr, dssdev);
 435                 return r;
 436         }
 437
 438         return 0;
 439 }
 440
 441 static void hdmi_disconnect(struct omap_dss_device *dssdev,
 442                 struct omap_dss_device *dst)
 443 {
 444         WARN_ON(dst != dssdev->dst);
 445
 446         if (dst != dssdev->dst)
 447                 return;
 448
 449         omapdss_output_unset_device(dssdev);
 450
 451         if (dssdev->manager)
 452                 dss_mgr_disconnect(dssdev->manager, dssdev);
 453 }
 454
 455 static int hdmi_read_edid(struct omap_dss_device *dssdev,
 456                 u8 *edid, int len)
 457 {
 458         bool need_enable = !hdmi.core_enabled;
 459         int r;
 460
 461         if (need_enable) {
 462                 r = hdmi_core_enable(dssdev);
 463                 if (r)
 464                         return r;
 465         }
 466
 467         r = read_edid(edid, len);
 468
 469         if (need_enable)
 470                 hdmi_core_disable(dssdev);
 471
 472         return r;
 473 }
 474
 475 static int hdmi_set_infoframe(struct omap_dss_device *dssdev,
 476                 const struct hdmi_avi_infoframe *avi)
 477 {
 478         hdmi.cfg.infoframe = *avi;
 479         return 0;
 480 }
 481
 482 static int hdmi_set_hdmi_mode(struct omap_dss_device *dssdev,
 483                 bool hdmi_mode)
 484 {
 485         hdmi.cfg.hdmi_dvi_mode = hdmi_mode ? HDMI_HDMI : HDMI_DVI;
 486         return 0;
 487 }
 488
 489 static const struct omapdss_hdmi_ops hdmi_ops = {
 490         .connect                = hdmi_connect,
 491         .disconnect             = hdmi_disconnect,
 492
 493         .enable                 = hdmi_display_enable,
 494         .disable                = hdmi_display_disable,
 495
 496         .check_timings          = hdmi_display_check_timing,
 497         .set_timings            = hdmi_display_set_timing,
 498         .get_timings            = hdmi_display_get_timings,
 499
 500         .read_edid              = hdmi_read_edid,
 501         .set_infoframe          = hdmi_set_infoframe,
 502         .set_hdmi_mode          = hdmi_set_hdmi_mode,
 503 };
 504
 505 static void hdmi_init_output(struct platform_device *pdev)
 506 {
 507         struct omap_dss_device *out = &hdmi.output;
 508
 509         out->dev = &pdev->dev;
 510         out->id = OMAP_DSS_OUTPUT_HDMI;
 511         out->output_type = OMAP_DISPLAY_TYPE_HDMI;
 512         out->name = "hdmi.0";
 513         out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT;
 514         out->ops.hdmi = &hdmi_ops;
 515         out->owner = THIS_MODULE;
 516
 517         omapdss_register_output(out);
 518 }
 519
 520 static void hdmi_uninit_output(struct platform_device *pdev)
 521 {
 522         struct omap_dss_device *out = &hdmi.output;
 523
 524         omapdss_unregister_output(out);
 525 }
 526
 527 static int hdmi_probe_of(struct platform_device *pdev)
 528 {
 529         struct device_node *node = pdev->dev.of_node;
 530         struct device_node *ep;
 531         int r;
 532
 533         ep = of_graph_get_endpoint_by_regs(node, 0, -1);
 534         if (!ep)
 535                 return 0;
 536
 537         r = hdmi_parse_lanes_of(pdev, ep, &hdmi.phy);
 538         if (r)
 539                 goto err;
 540
 541         of_node_put(ep);
 542         return 0;
 543
 544 err:
 545         of_node_put(ep);
 546         return r;
 547 }
 548
 549 /* Audio callbacks */
 550 static int hdmi_audio_startup(struct device *dev,
 551                               void (*abort_cb)(struct device *dev))
 552 {
 553         struct omap_hdmi *hd = dev_get_drvdata(dev);
 554         int ret = 0;
 555
 556         mutex_lock(&hd->lock);
 557
 558         if (!hdmi_mode_has_audio(&hd->cfg) || !hd->display_enabled) {
 559                 ret = -EPERM;
 560                 goto out;
 561         }
 562
 563         hd->audio_abort_cb = abort_cb;
 564
 565 out:
 566         mutex_unlock(&hd->lock);
 567
 568         return ret;
 569 }
 570
 571 static int hdmi_audio_shutdown(struct device *dev)
 572 {
 573         struct omap_hdmi *hd = dev_get_drvdata(dev);
 574
 575         mutex_lock(&hd->lock);
 576         hd->audio_abort_cb = NULL;
 577         hd->audio_configured = false;
 578         hd->audio_playing = false;
 579         mutex_unlock(&hd->lock);
 580
 581         return 0;
 582 }
 583
 584 static int hdmi_audio_start(struct device *dev)
 585 {
 586         struct omap_hdmi *hd = dev_get_drvdata(dev);
 587         unsigned long flags;
 588
 589         WARN_ON(!hdmi_mode_has_audio(&hd->cfg));
 590
 591         spin_lock_irqsave(&hd->audio_playing_lock, flags);
 592
 593         if (hd->display_enabled)
 594                 hdmi_start_audio_stream(hd);
 595         hd->audio_playing = true;
 596
 597         spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
 598         return 0;
 599 }
 600
 601 static void hdmi_audio_stop(struct device *dev)
 602 {
 603         struct omap_hdmi *hd = dev_get_drvdata(dev);
 604         unsigned long flags;
 605
 606         WARN_ON(!hdmi_mode_has_audio(&hd->cfg));
 607
 608         spin_lock_irqsave(&hd->audio_playing_lock, flags);
 609
 610         if (hd->display_enabled)
 611                 hdmi_stop_audio_stream(hd);
 612         hd->audio_playing = false;
 613
 614         spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
 615 }
 616
 617 static int hdmi_audio_config(struct device *dev,
 618                              struct omap_dss_audio *dss_audio)
 619 {
 620         struct omap_hdmi *hd = dev_get_drvdata(dev);
 621         int ret;
 622
 623         mutex_lock(&hd->lock);
 624
 625         if (!hdmi_mode_has_audio(&hd->cfg) || !hd->display_enabled) {
 626                 ret = -EPERM;
 627                 goto out;
 628         }
 629
 630         ret = hdmi4_audio_config(&hd->core, &hd->wp, dss_audio,
 631                                  hd->cfg.timings.pixelclock);
 632         if (!ret) {
 633                 hd->audio_configured = true;
 634                 hd->audio_config = *dss_audio;
 635         }
 636 out:
 637         mutex_unlock(&hd->lock);
 638
 639         return ret;
 640 }
 641
 642 static const struct omap_hdmi_audio_ops hdmi_audio_ops = {
 643         .audio_startup = hdmi_audio_startup,
 644         .audio_shutdown = hdmi_audio_shutdown,
 645         .audio_start = hdmi_audio_start,
 646         .audio_stop = hdmi_audio_stop,
 647         .audio_config = hdmi_audio_config,
 648 };
 649
 650 static int hdmi_audio_register(struct device *dev)
 651 {
 652         struct omap_hdmi_audio_pdata pdata = {
 653                 .dev = dev,
 654                 .version = 4,
 655                 .audio_dma_addr = hdmi_wp_get_audio_dma_addr(&hdmi.wp),
 656                 .ops = &hdmi_audio_ops,
 657         };
 658
 659         hdmi.audio_pdev = platform_device_register_data(
 660                 dev, "omap-hdmi-audio", PLATFORM_DEVID_AUTO,
 661                 &pdata, sizeof(pdata));
 662
 663         return PTR_ERR_OR_ZERO(hdmi.audio_pdev);
 664 }
 665
 666 /* HDMI HW IP initialisation */
 667 static int hdmi4_bind(struct device *dev, struct device *master, void *data)
 668 {
 669         struct platform_device *pdev = to_platform_device(dev);
 670         int r;
 671         int irq;
 672
 673         hdmi.pdev = pdev;
 674         platform_set_drvdata(pdev, &hdmi);
 675
 676         mutex_init(&hdmi.lock);
 677         spin_lock_init(&hdmi.audio_playing_lock);
 678
 679         if (pdev->dev.of_node) {
 680                 r = hdmi_probe_of(pdev);
 681                 if (r)
 682                         return r;
 683         }
 684
 685         r = hdmi_wp_init(pdev, &hdmi.wp);
 686         if (r)
 687                 return r;
 688
 689         r = hdmi_pll_init(pdev, &hdmi.pll, &hdmi.wp);
 690         if (r)
 691                 return r;
 692
 693         r = hdmi_phy_init(pdev, &hdmi.phy);
 694         if (r)
 695                 goto err;
 696
 697         r = hdmi4_core_init(pdev, &hdmi.core);
 698         if (r)
 699                 goto err;
 700
 701         irq = platform_get_irq(pdev, 0);
 702         if (irq < 0) {
 703                 DSSERR("platform_get_irq failed\n");
 704                 r = -ENODEV;
 705                 goto err;
 706         }
 707
 708         r = devm_request_threaded_irq(&pdev->dev, irq,
 709                         NULL, hdmi_irq_handler,
 710                         IRQF_ONESHOT, "OMAP HDMI", &hdmi.wp);
 711         if (r) {
 712                 DSSERR("HDMI IRQ request failed\n");
 713                 goto err;
 714         }
 715
 716         pm_runtime_enable(&pdev->dev);
 717
 718         hdmi_init_output(pdev);
 719
 720         r = hdmi_audio_register(&pdev->dev);
 721         if (r) {
 722                 DSSERR("Registering HDMI audio failed\n");
 723                 hdmi_uninit_output(pdev);
 724                 pm_runtime_disable(&pdev->dev);
 725                 return r;
 726         }
 727
 728         dss_debugfs_create_file("hdmi", hdmi_dump_regs);
 729
 730         return 0;
 731 err:
 732         hdmi_pll_uninit(&hdmi.pll);
 733         return r;
 734 }
 735
 736 static void hdmi4_unbind(struct device *dev, struct device *master, void *data)
 737 {
 738         struct platform_device *pdev = to_platform_device(dev);
 739
 740         if (hdmi.audio_pdev)
 741                 platform_device_unregister(hdmi.audio_pdev);
 742
 743         hdmi_uninit_output(pdev);
 744
 745         hdmi_pll_uninit(&hdmi.pll);
 746
 747         pm_runtime_disable(&pdev->dev);
 748 }
 749
 750 static const struct component_ops hdmi4_component_ops = {
 751         .bind   = hdmi4_bind,
 752         .unbind = hdmi4_unbind,
 753 };
 754
 755 static int hdmi4_probe(struct platform_device *pdev)
 756 {
 757         return component_add(&pdev->dev, &hdmi4_component_ops);
 758 }
 759
 760 static void hdmi4_remove(struct platform_device *pdev)
 761 {
 762         component_del(&pdev->dev, &hdmi4_component_ops);
 763 }
 764
 765 static int hdmi_runtime_suspend(struct device *dev)
 766 {
 767         dispc_runtime_put();
 768
 769         return 0;
 770 }
 771
 772 static int hdmi_runtime_resume(struct device *dev)
 773 {
 774         int r;
 775
 776         r = dispc_runtime_get();
 777         if (r < 0)
 778                 return r;
 779
 780         return 0;
 781 }
 782
 783 static const struct dev_pm_ops hdmi_pm_ops = {
 784         .runtime_suspend = hdmi_runtime_suspend,
 785         .runtime_resume = hdmi_runtime_resume,
 786 };
 787
 788 static const struct of_device_id hdmi_of_match[] = {
 789         { .compatible = "ti,omap4-hdmi", },
 790         {},
 791 };
 792
 793 static struct platform_driver omapdss_hdmihw_driver = {
 794         .probe          = hdmi4_probe,
 795         .remove         = hdmi4_remove,
 796         .driver         = {
 797                 .name   = "omapdss_hdmi",
 798                 .pm     = &hdmi_pm_ops,
 799                 .of_match_table = hdmi_of_match,
 800                 .suppress_bind_attrs = true,
 801         },
 802 };
 803
 804 int __init hdmi4_init_platform_driver(void)
 805 {
 806         return platform_driver_register(&omapdss_hdmihw_driver);
 807 }
 808
 809 void hdmi4_uninit_platform_driver(void)
 810 {
 811         platform_driver_unregister(&omapdss_hdmihw_driver);
 812 }