drivers/gpu/drm/omapdrm/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  *
   5  * Copyright (C) 2010-2011 Texas Instruments Incorporated - https://www.ti.com/
   6  * Authors: Yong Zhi
   7  *      Mythri pk <[email protected]>
   8  */
   9
  10 #define DSS_SUBSYS_NAME "HDMI"
  11
  12 #include <linux/kernel.h>
  13 #include <linux/module.h>
  14 #include <linux/err.h>
  15 #include <linux/io.h>
  16 #include <linux/interrupt.h>
  17 #include <linux/mutex.h>
  18 #include <linux/delay.h>
  19 #include <linux/string.h>
  20 #include <linux/platform_device.h>
  21 #include <linux/pm_runtime.h>
  22 #include <linux/clk.h>
  23 #include <linux/regulator/consumer.h>
  24 #include <linux/component.h>
  25 #include <linux/of.h>
  26 #include <linux/of_graph.h>
  27 #include <sound/omap-hdmi-audio.h>
  28 #include <media/cec.h>
  29
  30 #include <drm/drm_atomic.h>
  31 #include <drm/drm_atomic_state_helper.h>
  32
  33 #include "omapdss.h"
  34 #include "hdmi4_core.h"
  35 #include "hdmi4_cec.h"
  36 #include "dss.h"
  37 #include "hdmi.h"
  38
  39 static int hdmi_runtime_get(struct omap_hdmi *hdmi)
  40 {
  41         int r;
  42
  43         DSSDBG("hdmi_runtime_get\n");
  44
  45         r = pm_runtime_get_sync(&hdmi->pdev->dev);
  46         if (WARN_ON(r < 0)) {
  47                 pm_runtime_put_noidle(&hdmi->pdev->dev);
  48                 return r;
  49         }
  50         return 0;
  51 }
  52
  53 static void hdmi_runtime_put(struct omap_hdmi *hdmi)
  54 {
  55         int r;
  56
  57         DSSDBG("hdmi_runtime_put\n");
  58
  59         r = pm_runtime_put_sync(&hdmi->pdev->dev);
  60         WARN_ON(r < 0 && r != -ENOSYS);
  61 }
  62
  63 static irqreturn_t hdmi_irq_handler(int irq, void *data)
  64 {
  65         struct omap_hdmi *hdmi = data;
  66         struct hdmi_wp_data *wp = &hdmi->wp;
  67         u32 irqstatus;
  68
  69         irqstatus = hdmi_wp_get_irqstatus(wp);
  70         hdmi_wp_set_irqstatus(wp, irqstatus);
  71
  72         if ((irqstatus & HDMI_IRQ_LINK_CONNECT) &&
  73                         irqstatus & HDMI_IRQ_LINK_DISCONNECT) {
  74                 /*
  75                  * If we get both connect and disconnect interrupts at the same
  76                  * time, turn off the PHY, clear interrupts, and restart, which
  77                  * raises connect interrupt if a cable is connected, or nothing
  78                  * if cable is not connected.
  79                  */
  80                 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_OFF);
  81
  82                 hdmi_wp_set_irqstatus(wp, HDMI_IRQ_LINK_CONNECT |
  83                                 HDMI_IRQ_LINK_DISCONNECT);
  84
  85                 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
  86         } else if (irqstatus & HDMI_IRQ_LINK_CONNECT) {
  87                 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_TXON);
  88         } else if (irqstatus & HDMI_IRQ_LINK_DISCONNECT) {
  89                 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
  90         }
  91         if (irqstatus & HDMI_IRQ_CORE) {
  92                 u32 intr4 = hdmi_read_reg(hdmi->core.base, HDMI_CORE_SYS_INTR4);
  93
  94                 hdmi_write_reg(hdmi->core.base, HDMI_CORE_SYS_INTR4, intr4);
  95                 if (intr4 & 8)
  96                         hdmi4_cec_irq(&hdmi->core);
  97         }
  98
  99         return IRQ_HANDLED;
 100 }
 101
 102 static int hdmi_power_on_core(struct omap_hdmi *hdmi)
 103 {
 104         int r;
 105
 106         if (hdmi->core.core_pwr_cnt++)
 107                 return 0;
 108
 109         r = regulator_enable(hdmi->vdda_reg);
 110         if (r)
 111                 goto err_reg_enable;
 112
 113         r = hdmi_runtime_get(hdmi);
 114         if (r)
 115                 goto err_runtime_get;
 116
 117         hdmi4_core_powerdown_disable(&hdmi->core);
 118
 119         /* Make selection of HDMI in DSS */
 120         dss_select_hdmi_venc_clk_source(hdmi->dss, DSS_HDMI_M_PCLK);
 121
 122         hdmi->core_enabled = true;
 123
 124         return 0;
 125
 126 err_runtime_get:
 127         regulator_disable(hdmi->vdda_reg);
 128 err_reg_enable:
 129         hdmi->core.core_pwr_cnt--;
 130
 131         return r;
 132 }
 133
 134 static void hdmi_power_off_core(struct omap_hdmi *hdmi)
 135 {
 136         if (--hdmi->core.core_pwr_cnt)
 137                 return;
 138
 139         hdmi->core_enabled = false;
 140
 141         hdmi_runtime_put(hdmi);
 142         regulator_disable(hdmi->vdda_reg);
 143 }
 144
 145 static int hdmi_power_on_full(struct omap_hdmi *hdmi)
 146 {
 147         int r;
 148         const struct videomode *vm;
 149         struct hdmi_wp_data *wp = &hdmi->wp;
 150         struct dss_pll_clock_info hdmi_cinfo = { 0 };
 151         unsigned int pc;
 152
 153         r = hdmi_power_on_core(hdmi);
 154         if (r)
 155                 return r;
 156
 157         /* disable and clear irqs */
 158         hdmi_wp_clear_irqenable(wp, ~HDMI_IRQ_CORE);
 159         hdmi_wp_set_irqstatus(wp, ~HDMI_IRQ_CORE);
 160
 161         vm = &hdmi->cfg.vm;
 162
 163         DSSDBG("hdmi_power_on hactive= %d vactive = %d\n", vm->hactive,
 164                vm->vactive);
 165
 166         pc = vm->pixelclock;
 167         if (vm->flags & DISPLAY_FLAGS_DOUBLECLK)
 168                 pc *= 2;
 169
 170         /* DSS_HDMI_TCLK is bitclk / 10 */
 171         pc *= 10;
 172
 173         dss_pll_calc_b(&hdmi->pll.pll, clk_get_rate(hdmi->pll.pll.clkin),
 174                 pc, &hdmi_cinfo);
 175
 176         r = dss_pll_enable(&hdmi->pll.pll);
 177         if (r) {
 178                 DSSERR("Failed to enable PLL\n");
 179                 goto err_pll_enable;
 180         }
 181
 182         r = dss_pll_set_config(&hdmi->pll.pll, &hdmi_cinfo);
 183         if (r) {
 184                 DSSERR("Failed to configure PLL\n");
 185                 goto err_pll_cfg;
 186         }
 187
 188         r = hdmi_phy_configure(&hdmi->phy, hdmi_cinfo.clkdco,
 189                 hdmi_cinfo.clkout[0]);
 190         if (r) {
 191                 DSSDBG("Failed to configure PHY\n");
 192                 goto err_phy_cfg;
 193         }
 194
 195         r = hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
 196         if (r)
 197                 goto err_phy_pwr;
 198
 199         hdmi4_configure(&hdmi->core, &hdmi->wp, &hdmi->cfg);
 200
 201         r = dss_mgr_enable(&hdmi->output);
 202         if (r)
 203                 goto err_mgr_enable;
 204
 205         r = hdmi_wp_video_start(&hdmi->wp);
 206         if (r)
 207                 goto err_vid_enable;
 208
 209         hdmi_wp_set_irqenable(wp,
 210                 HDMI_IRQ_LINK_CONNECT | HDMI_IRQ_LINK_DISCONNECT);
 211
 212         return 0;
 213
 214 err_vid_enable:
 215         dss_mgr_disable(&hdmi->output);
 216 err_mgr_enable:
 217         hdmi_wp_set_phy_pwr(&hdmi->wp, HDMI_PHYPWRCMD_OFF);
 218 err_phy_pwr:
 219 err_phy_cfg:
 220 err_pll_cfg:
 221         dss_pll_disable(&hdmi->pll.pll);
 222 err_pll_enable:
 223         hdmi_power_off_core(hdmi);
 224         return -EIO;
 225 }
 226
 227 static void hdmi_power_off_full(struct omap_hdmi *hdmi)
 228 {
 229         hdmi_wp_clear_irqenable(&hdmi->wp, ~HDMI_IRQ_CORE);
 230
 231         hdmi_wp_video_stop(&hdmi->wp);
 232
 233         dss_mgr_disable(&hdmi->output);
 234
 235         hdmi_wp_set_phy_pwr(&hdmi->wp, HDMI_PHYPWRCMD_OFF);
 236
 237         dss_pll_disable(&hdmi->pll.pll);
 238
 239         hdmi_power_off_core(hdmi);
 240 }
 241
 242 static int hdmi_dump_regs(struct seq_file *s, void *p)
 243 {
 244         struct omap_hdmi *hdmi = s->private;
 245
 246         mutex_lock(&hdmi->lock);
 247
 248         if (hdmi_runtime_get(hdmi)) {
 249                 mutex_unlock(&hdmi->lock);
 250                 return 0;
 251         }
 252
 253         hdmi_wp_dump(&hdmi->wp, s);
 254         hdmi_pll_dump(&hdmi->pll, s);
 255         hdmi_phy_dump(&hdmi->phy, s);
 256         hdmi4_core_dump(&hdmi->core, s);
 257
 258         hdmi_runtime_put(hdmi);
 259         mutex_unlock(&hdmi->lock);
 260         return 0;
 261 }
 262
 263 static void hdmi_start_audio_stream(struct omap_hdmi *hd)
 264 {
 265         hdmi_wp_audio_enable(&hd->wp, true);
 266         hdmi4_audio_start(&hd->core, &hd->wp);
 267 }
 268
 269 static void hdmi_stop_audio_stream(struct omap_hdmi *hd)
 270 {
 271         hdmi4_audio_stop(&hd->core, &hd->wp);
 272         hdmi_wp_audio_enable(&hd->wp, false);
 273 }
 274
 275 int hdmi4_core_enable(struct hdmi_core_data *core)
 276 {
 277         struct omap_hdmi *hdmi = container_of(core, struct omap_hdmi, core);
 278         int r = 0;
 279
 280         DSSDBG("ENTER omapdss_hdmi4_core_enable\n");
 281
 282         mutex_lock(&hdmi->lock);
 283
 284         r = hdmi_power_on_core(hdmi);
 285         if (r) {
 286                 DSSERR("failed to power on device\n");
 287                 goto err0;
 288         }
 289
 290         mutex_unlock(&hdmi->lock);
 291         return 0;
 292
 293 err0:
 294         mutex_unlock(&hdmi->lock);
 295         return r;
 296 }
 297
 298 void hdmi4_core_disable(struct hdmi_core_data *core)
 299 {
 300         struct omap_hdmi *hdmi = container_of(core, struct omap_hdmi, core);
 301
 302         DSSDBG("Enter omapdss_hdmi4_core_disable\n");
 303
 304         mutex_lock(&hdmi->lock);
 305
 306         hdmi_power_off_core(hdmi);
 307
 308         mutex_unlock(&hdmi->lock);
 309 }
 310
 311 /* -----------------------------------------------------------------------------
 312  * DRM Bridge Operations
 313  */
 314
 315 static int hdmi4_bridge_attach(struct drm_bridge *bridge,
 316                                enum drm_bridge_attach_flags flags)
 317 {
 318         struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge);
 319
 320         if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR))
 321                 return -EINVAL;
 322
 323         return drm_bridge_attach(bridge->encoder, hdmi->output.next_bridge,
 324                                  bridge, flags);
 325 }
 326
 327 static void hdmi4_bridge_mode_set(struct drm_bridge *bridge,
 328                                   const struct drm_display_mode *mode,
 329                                   const struct drm_display_mode *adjusted_mode)
 330 {
 331         struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge);
 332
 333         mutex_lock(&hdmi->lock);
 334
 335         drm_display_mode_to_videomode(adjusted_mode, &hdmi->cfg.vm);
 336
 337         dispc_set_tv_pclk(hdmi->dss->dispc, adjusted_mode->clock * 1000);
 338
 339         mutex_unlock(&hdmi->lock);
 340 }
 341
 342 static void hdmi4_bridge_enable(struct drm_bridge *bridge,
 343                                 struct drm_bridge_state *bridge_state)
 344 {
 345         struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge);
 346         struct drm_atomic_state *state = bridge_state->base.state;
 347         struct drm_connector_state *conn_state;
 348         struct drm_connector *connector;
 349         struct drm_crtc_state *crtc_state;
 350         unsigned long flags;
 351         int ret;
 352
 353         /*
 354          * None of these should fail, as the bridge can't be enabled without a
 355          * valid CRTC to connector path with fully populated new states.
 356          */
 357         connector = drm_atomic_get_new_connector_for_encoder(state,
 358                                                              bridge->encoder);
 359         if (WARN_ON(!connector))
 360                 return;
 361         conn_state = drm_atomic_get_new_connector_state(state, connector);
 362         if (WARN_ON(!conn_state))
 363                 return;
 364         crtc_state = drm_atomic_get_new_crtc_state(state, conn_state->crtc);
 365         if (WARN_ON(!crtc_state))
 366                 return;
 367
 368         hdmi->cfg.hdmi_dvi_mode = connector->display_info.is_hdmi
 369                                 ? HDMI_HDMI : HDMI_DVI;
 370
 371         if (connector->display_info.is_hdmi) {
 372                 const struct drm_display_mode *mode;
 373                 struct hdmi_avi_infoframe avi;
 374
 375                 mode = &crtc_state->adjusted_mode;
 376                 ret = drm_hdmi_avi_infoframe_from_display_mode(&avi, connector,
 377                                                                mode);
 378                 if (ret == 0)
 379                         hdmi->cfg.infoframe = avi;
 380         }
 381
 382         mutex_lock(&hdmi->lock);
 383
 384         ret = hdmi_power_on_full(hdmi);
 385         if (ret) {
 386                 DSSERR("failed to power on device\n");
 387                 goto done;
 388         }
 389
 390         if (hdmi->audio_configured) {
 391                 ret = hdmi4_audio_config(&hdmi->core, &hdmi->wp,
 392                                          &hdmi->audio_config,
 393                                          hdmi->cfg.vm.pixelclock);
 394                 if (ret) {
 395                         DSSERR("Error restoring audio configuration: %d", ret);
 396                         hdmi->audio_abort_cb(&hdmi->pdev->dev);
 397                         hdmi->audio_configured = false;
 398                 }
 399         }
 400
 401         spin_lock_irqsave(&hdmi->audio_playing_lock, flags);
 402         if (hdmi->audio_configured && hdmi->audio_playing)
 403                 hdmi_start_audio_stream(hdmi);
 404         hdmi->display_enabled = true;
 405         spin_unlock_irqrestore(&hdmi->audio_playing_lock, flags);
 406
 407 done:
 408         mutex_unlock(&hdmi->lock);
 409 }
 410
 411 static void hdmi4_bridge_disable(struct drm_bridge *bridge,
 412                                  struct drm_bridge_state *bridge_state)
 413 {
 414         struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge);
 415         unsigned long flags;
 416
 417         mutex_lock(&hdmi->lock);
 418
 419         spin_lock_irqsave(&hdmi->audio_playing_lock, flags);
 420         hdmi_stop_audio_stream(hdmi);
 421         hdmi->display_enabled = false;
 422         spin_unlock_irqrestore(&hdmi->audio_playing_lock, flags);
 423
 424         hdmi_power_off_full(hdmi);
 425
 426         mutex_unlock(&hdmi->lock);
 427 }
 428
 429 static void hdmi4_bridge_hpd_notify(struct drm_bridge *bridge,
 430                                     enum drm_connector_status status)
 431 {
 432         struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge);
 433
 434         if (status == connector_status_disconnected)
 435                 hdmi4_cec_set_phys_addr(&hdmi->core, CEC_PHYS_ADDR_INVALID);
 436 }
 437
 438 static struct edid *hdmi4_bridge_get_edid(struct drm_bridge *bridge,
 439                                           struct drm_connector *connector)
 440 {
 441         struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge);
 442         struct edid *edid = NULL;
 443         unsigned int cec_addr;
 444         bool need_enable;
 445         int r;
 446
 447         need_enable = hdmi->core_enabled == false;
 448
 449         if (need_enable) {
 450                 r = hdmi4_core_enable(&hdmi->core);
 451                 if (r)
 452                         return NULL;
 453         }
 454
 455         mutex_lock(&hdmi->lock);
 456         r = hdmi_runtime_get(hdmi);
 457         BUG_ON(r);
 458
 459         r = hdmi4_core_ddc_init(&hdmi->core);
 460         if (r)
 461                 goto done;
 462
 463         edid = drm_do_get_edid(connector, hdmi4_core_ddc_read, &hdmi->core);
 464
 465 done:
 466         hdmi_runtime_put(hdmi);
 467         mutex_unlock(&hdmi->lock);
 468
 469         if (edid && edid->extensions) {
 470                 unsigned int len = (edid->extensions + 1) * EDID_LENGTH;
 471
 472                 cec_addr = cec_get_edid_phys_addr((u8 *)edid, len, NULL);
 473         } else {
 474                 cec_addr = CEC_PHYS_ADDR_INVALID;
 475         }
 476
 477         hdmi4_cec_set_phys_addr(&hdmi->core, cec_addr);
 478
 479         if (need_enable)
 480                 hdmi4_core_disable(&hdmi->core);
 481
 482         return edid;
 483 }
 484
 485 static const struct drm_bridge_funcs hdmi4_bridge_funcs = {
 486         .attach = hdmi4_bridge_attach,
 487         .mode_set = hdmi4_bridge_mode_set,
 488         .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
 489         .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
 490         .atomic_reset = drm_atomic_helper_bridge_reset,
 491         .atomic_enable = hdmi4_bridge_enable,
 492         .atomic_disable = hdmi4_bridge_disable,
 493         .hpd_notify = hdmi4_bridge_hpd_notify,
 494         .get_edid = hdmi4_bridge_get_edid,
 495 };
 496
 497 static void hdmi4_bridge_init(struct omap_hdmi *hdmi)
 498 {
 499         hdmi->bridge.funcs = &hdmi4_bridge_funcs;
 500         hdmi->bridge.of_node = hdmi->pdev->dev.of_node;
 501         hdmi->bridge.ops = DRM_BRIDGE_OP_EDID;
 502         hdmi->bridge.type = DRM_MODE_CONNECTOR_HDMIA;
 503
 504         drm_bridge_add(&hdmi->bridge);
 505 }
 506
 507 static void hdmi4_bridge_cleanup(struct omap_hdmi *hdmi)
 508 {
 509         drm_bridge_remove(&hdmi->bridge);
 510 }
 511
 512 /* -----------------------------------------------------------------------------
 513  * Audio Callbacks
 514  */
 515
 516 static int hdmi_audio_startup(struct device *dev,
 517                               void (*abort_cb)(struct device *dev))
 518 {
 519         struct omap_hdmi *hd = dev_get_drvdata(dev);
 520
 521         mutex_lock(&hd->lock);
 522
 523         WARN_ON(hd->audio_abort_cb != NULL);
 524
 525         hd->audio_abort_cb = abort_cb;
 526
 527         mutex_unlock(&hd->lock);
 528
 529         return 0;
 530 }
 531
 532 static int hdmi_audio_shutdown(struct device *dev)
 533 {
 534         struct omap_hdmi *hd = dev_get_drvdata(dev);
 535
 536         mutex_lock(&hd->lock);
 537         hd->audio_abort_cb = NULL;
 538         hd->audio_configured = false;
 539         hd->audio_playing = false;
 540         mutex_unlock(&hd->lock);
 541
 542         return 0;
 543 }
 544
 545 static int hdmi_audio_start(struct device *dev)
 546 {
 547         struct omap_hdmi *hd = dev_get_drvdata(dev);
 548         unsigned long flags;
 549
 550         spin_lock_irqsave(&hd->audio_playing_lock, flags);
 551
 552         if (hd->display_enabled) {
 553                 if (!hdmi_mode_has_audio(&hd->cfg))
 554                         DSSERR("%s: Video mode does not support audio\n",
 555                                __func__);
 556                 hdmi_start_audio_stream(hd);
 557         }
 558         hd->audio_playing = true;
 559
 560         spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
 561         return 0;
 562 }
 563
 564 static void hdmi_audio_stop(struct device *dev)
 565 {
 566         struct omap_hdmi *hd = dev_get_drvdata(dev);
 567         unsigned long flags;
 568
 569         WARN_ON(!hdmi_mode_has_audio(&hd->cfg));
 570
 571         spin_lock_irqsave(&hd->audio_playing_lock, flags);
 572
 573         if (hd->display_enabled)
 574                 hdmi_stop_audio_stream(hd);
 575         hd->audio_playing = false;
 576
 577         spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
 578 }
 579
 580 static int hdmi_audio_config(struct device *dev,
 581                              struct omap_dss_audio *dss_audio)
 582 {
 583         struct omap_hdmi *hd = dev_get_drvdata(dev);
 584         int ret = 0;
 585
 586         mutex_lock(&hd->lock);
 587
 588         if (hd->display_enabled) {
 589                 ret = hdmi4_audio_config(&hd->core, &hd->wp, dss_audio,
 590                                          hd->cfg.vm.pixelclock);
 591                 if (ret)
 592                         goto out;
 593         }
 594
 595         hd->audio_configured = true;
 596         hd->audio_config = *dss_audio;
 597 out:
 598         mutex_unlock(&hd->lock);
 599
 600         return ret;
 601 }
 602
 603 static const struct omap_hdmi_audio_ops hdmi_audio_ops = {
 604         .audio_startup = hdmi_audio_startup,
 605         .audio_shutdown = hdmi_audio_shutdown,
 606         .audio_start = hdmi_audio_start,
 607         .audio_stop = hdmi_audio_stop,
 608         .audio_config = hdmi_audio_config,
 609 };
 610
 611 static int hdmi_audio_register(struct omap_hdmi *hdmi)
 612 {
 613         struct omap_hdmi_audio_pdata pdata = {
 614                 .dev = &hdmi->pdev->dev,
 615                 .version = 4,
 616                 .audio_dma_addr = hdmi_wp_get_audio_dma_addr(&hdmi->wp),
 617                 .ops = &hdmi_audio_ops,
 618         };
 619
 620         hdmi->audio_pdev = platform_device_register_data(
 621                 &hdmi->pdev->dev, "omap-hdmi-audio", PLATFORM_DEVID_AUTO,
 622                 &pdata, sizeof(pdata));
 623
 624         if (IS_ERR(hdmi->audio_pdev))
 625                 return PTR_ERR(hdmi->audio_pdev);
 626
 627         return 0;
 628 }
 629
 630 /* -----------------------------------------------------------------------------
 631  * Component Bind & Unbind
 632  */
 633
 634 static int hdmi4_bind(struct device *dev, struct device *master, void *data)
 635 {
 636         struct dss_device *dss = dss_get_device(master);
 637         struct omap_hdmi *hdmi = dev_get_drvdata(dev);
 638         int r;
 639
 640         hdmi->dss = dss;
 641
 642         r = hdmi_runtime_get(hdmi);
 643         if (r)
 644                 return r;
 645
 646         r = hdmi_pll_init(dss, hdmi->pdev, &hdmi->pll, &hdmi->wp);
 647         if (r)
 648                 goto err_runtime_put;
 649
 650         r = hdmi4_cec_init(hdmi->pdev, &hdmi->core, &hdmi->wp);
 651         if (r)
 652                 goto err_pll_uninit;
 653
 654         r = hdmi_audio_register(hdmi);
 655         if (r) {
 656                 DSSERR("Registering HDMI audio failed\n");
 657                 goto err_cec_uninit;
 658         }
 659
 660         hdmi->debugfs = dss_debugfs_create_file(dss, "hdmi", hdmi_dump_regs,
 661                                                hdmi);
 662
 663         hdmi_runtime_put(hdmi);
 664
 665         return 0;
 666
 667 err_cec_uninit:
 668         hdmi4_cec_uninit(&hdmi->core);
 669 err_pll_uninit:
 670         hdmi_pll_uninit(&hdmi->pll);
 671 err_runtime_put:
 672         hdmi_runtime_put(hdmi);
 673         return r;
 674 }
 675
 676 static void hdmi4_unbind(struct device *dev, struct device *master, void *data)
 677 {
 678         struct omap_hdmi *hdmi = dev_get_drvdata(dev);
 679
 680         dss_debugfs_remove_file(hdmi->debugfs);
 681
 682         if (hdmi->audio_pdev)
 683                 platform_device_unregister(hdmi->audio_pdev);
 684
 685         hdmi4_cec_uninit(&hdmi->core);
 686         hdmi_pll_uninit(&hdmi->pll);
 687 }
 688
 689 static const struct component_ops hdmi4_component_ops = {
 690         .bind   = hdmi4_bind,
 691         .unbind = hdmi4_unbind,
 692 };
 693
 694 /* -----------------------------------------------------------------------------
 695  * Probe & Remove, Suspend & Resume
 696  */
 697
 698 static int hdmi4_init_output(struct omap_hdmi *hdmi)
 699 {
 700         struct omap_dss_device *out = &hdmi->output;
 701         int r;
 702
 703         hdmi4_bridge_init(hdmi);
 704
 705         out->dev = &hdmi->pdev->dev;
 706         out->id = OMAP_DSS_OUTPUT_HDMI;
 707         out->type = OMAP_DISPLAY_TYPE_HDMI;
 708         out->name = "hdmi.0";
 709         out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT;
 710         out->of_port = 0;
 711
 712         r = omapdss_device_init_output(out, &hdmi->bridge);
 713         if (r < 0) {
 714                 hdmi4_bridge_cleanup(hdmi);
 715                 return r;
 716         }
 717
 718         omapdss_device_register(out);
 719
 720         return 0;
 721 }
 722
 723 static void hdmi4_uninit_output(struct omap_hdmi *hdmi)
 724 {
 725         struct omap_dss_device *out = &hdmi->output;
 726
 727         omapdss_device_unregister(out);
 728         omapdss_device_cleanup_output(out);
 729
 730         hdmi4_bridge_cleanup(hdmi);
 731 }
 732
 733 static int hdmi4_probe_of(struct omap_hdmi *hdmi)
 734 {
 735         struct platform_device *pdev = hdmi->pdev;
 736         struct device_node *node = pdev->dev.of_node;
 737         struct device_node *ep;
 738         int r;
 739
 740         ep = of_graph_get_endpoint_by_regs(node, 0, 0);
 741         if (!ep)
 742                 return 0;
 743
 744         r = hdmi_parse_lanes_of(pdev, ep, &hdmi->phy);
 745         of_node_put(ep);
 746         return r;
 747 }
 748
 749 static int hdmi4_probe(struct platform_device *pdev)
 750 {
 751         struct omap_hdmi *hdmi;
 752         int irq;
 753         int r;
 754
 755         hdmi = kzalloc(sizeof(*hdmi), GFP_KERNEL);
 756         if (!hdmi)
 757                 return -ENOMEM;
 758
 759         hdmi->pdev = pdev;
 760
 761         dev_set_drvdata(&pdev->dev, hdmi);
 762
 763         mutex_init(&hdmi->lock);
 764         spin_lock_init(&hdmi->audio_playing_lock);
 765
 766         r = hdmi4_probe_of(hdmi);
 767         if (r)
 768                 goto err_free;
 769
 770         r = hdmi_wp_init(pdev, &hdmi->wp, 4);
 771         if (r)
 772                 goto err_free;
 773
 774         r = hdmi_phy_init(pdev, &hdmi->phy, 4);
 775         if (r)
 776                 goto err_free;
 777
 778         r = hdmi4_core_init(pdev, &hdmi->core);
 779         if (r)
 780                 goto err_free;
 781
 782         irq = platform_get_irq(pdev, 0);
 783         if (irq < 0) {
 784                 DSSERR("platform_get_irq failed\n");
 785                 r = -ENODEV;
 786                 goto err_free;
 787         }
 788
 789         r = devm_request_threaded_irq(&pdev->dev, irq,
 790                         NULL, hdmi_irq_handler,
 791                         IRQF_ONESHOT, "OMAP HDMI", hdmi);
 792         if (r) {
 793                 DSSERR("HDMI IRQ request failed\n");
 794                 goto err_free;
 795         }
 796
 797         hdmi->vdda_reg = devm_regulator_get(&pdev->dev, "vdda");
 798         if (IS_ERR(hdmi->vdda_reg)) {
 799                 r = PTR_ERR(hdmi->vdda_reg);
 800                 if (r != -EPROBE_DEFER)
 801                         DSSERR("can't get VDDA regulator\n");
 802                 goto err_free;
 803         }
 804
 805         pm_runtime_enable(&pdev->dev);
 806
 807         r = hdmi4_init_output(hdmi);
 808         if (r)
 809                 goto err_pm_disable;
 810
 811         r = component_add(&pdev->dev, &hdmi4_component_ops);
 812         if (r)
 813                 goto err_uninit_output;
 814
 815         return 0;
 816
 817 err_uninit_output:
 818         hdmi4_uninit_output(hdmi);
 819 err_pm_disable:
 820         pm_runtime_disable(&pdev->dev);
 821 err_free:
 822         kfree(hdmi);
 823         return r;
 824 }
 825
 826 static int hdmi4_remove(struct platform_device *pdev)
 827 {
 828         struct omap_hdmi *hdmi = platform_get_drvdata(pdev);
 829
 830         component_del(&pdev->dev, &hdmi4_component_ops);
 831
 832         hdmi4_uninit_output(hdmi);
 833
 834         pm_runtime_disable(&pdev->dev);
 835
 836         kfree(hdmi);
 837         return 0;
 838 }
 839
 840 static const struct of_device_id hdmi_of_match[] = {
 841         { .compatible = "ti,omap4-hdmi", },
 842         {},
 843 };
 844
 845 struct platform_driver omapdss_hdmi4hw_driver = {
 846         .probe          = hdmi4_probe,
 847         .remove         = hdmi4_remove,
 848         .driver         = {
 849                 .name   = "omapdss_hdmi",
 850                 .of_match_table = hdmi_of_match,
 851                 .suppress_bind_attrs = true,
 852         },
 853 };