drivers/gpu/drm/omapdrm/dss/hdmi4.c

   1 /*
   2  * HDMI interface DSS driver for TI's OMAP4 family of SoCs.
   3  * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com/
   4  * Authors: Yong Zhi
   5  *      Mythri pk <mythripk@ti.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License version 2 as published by
   9  * the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  14  * more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along with
  17  * this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #define DSS_SUBSYS_NAME "HDMI"
  21
  22 #include <linux/kernel.h>
  23 #include <linux/module.h>
  24 #include <linux/err.h>
  25 #include <linux/io.h>
  26 #include <linux/interrupt.h>
  27 #include <linux/mutex.h>
  28 #include <linux/delay.h>
  29 #include <linux/string.h>
  30 #include <linux/platform_device.h>
  31 #include <linux/pm_runtime.h>
  32 #include <linux/clk.h>
  33 #include <linux/gpio.h>
  34 #include <linux/regulator/consumer.h>
  35 #include <linux/component.h>
  36 #include <video/omapdss.h>
  37 #include <sound/omap-hdmi-audio.h>
  38
  39 #include "hdmi4_core.h"
  40 #include "dss.h"
  41 #include "dss_features.h"
  42 #include "hdmi.h"
  43
  44 static struct omap_hdmi hdmi;
  45
  46 static int hdmi_runtime_get(void)
  47 {
  48         int r;
  49
  50         DSSDBG("hdmi_runtime_get\n");
  51
  52         r = pm_runtime_get_sync(&hdmi.pdev->dev);
  53         WARN_ON(r < 0);
  54         if (r < 0)
  55                 return r;
  56
  57         return 0;
  58 }
  59
  60 static void hdmi_runtime_put(void)
  61 {
  62         int r;
  63
  64         DSSDBG("hdmi_runtime_put\n");
  65
  66         r = pm_runtime_put_sync(&hdmi.pdev->dev);
  67         WARN_ON(r < 0 && r != -ENOSYS);
  68 }
  69
  70 static irqreturn_t hdmi_irq_handler(int irq, void *data)
  71 {
  72         struct hdmi_wp_data *wp = data;
  73         u32 irqstatus;
  74
  75         irqstatus = hdmi_wp_get_irqstatus(wp);
  76         hdmi_wp_set_irqstatus(wp, irqstatus);
  77
  78         if ((irqstatus & HDMI_IRQ_LINK_CONNECT) &&
  79                         irqstatus & HDMI_IRQ_LINK_DISCONNECT) {
  80                 /*
  81                  * If we get both connect and disconnect interrupts at the same
  82                  * time, turn off the PHY, clear interrupts, and restart, which
  83                  * raises connect interrupt if a cable is connected, or nothing
  84                  * if cable is not connected.
  85                  */
  86                 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_OFF);
  87
  88                 hdmi_wp_set_irqstatus(wp, HDMI_IRQ_LINK_CONNECT |
  89                                 HDMI_IRQ_LINK_DISCONNECT);
  90
  91                 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
  92         } else if (irqstatus & HDMI_IRQ_LINK_CONNECT) {
  93                 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_TXON);
  94         } else if (irqstatus & HDMI_IRQ_LINK_DISCONNECT) {
  95                 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
  96         }
  97
  98         return IRQ_HANDLED;
  99 }
 100
 101 static int hdmi_init_regulator(void)
 102 {
 103         int r;
 104         struct regulator *reg;
 105
 106         if (hdmi.vdda_reg != NULL)
 107                 return 0;
 108
 109         reg = devm_regulator_get(&hdmi.pdev->dev, "vdda");
 110
 111         if (IS_ERR(reg)) {
 112                 if (PTR_ERR(reg) != -EPROBE_DEFER)
 113                         DSSERR("can't get VDDA regulator\n");
 114                 return PTR_ERR(reg);
 115         }
 116
 117         if (regulator_can_change_voltage(reg)) {
 118                 r = regulator_set_voltage(reg, 1800000, 1800000);
 119                 if (r) {
 120                         devm_regulator_put(reg);
 121                         DSSWARN("can't set the regulator voltage\n");
 122                         return r;
 123                 }
 124         }
 125
 126         hdmi.vdda_reg = reg;
 127
 128         return 0;
 129 }
 130
 131 static int hdmi_power_on_core(struct omap_dss_device *dssdev)
 132 {
 133         int r;
 134
 135         r = regulator_enable(hdmi.vdda_reg);
 136         if (r)
 137                 return r;
 138
 139         r = hdmi_runtime_get();
 140         if (r)
 141                 goto err_runtime_get;
 142
 143         /* Make selection of HDMI in DSS */
 144         dss_select_hdmi_venc_clk_source(DSS_HDMI_M_PCLK);
 145
 146         hdmi.core_enabled = true;
 147
 148         return 0;
 149
 150 err_runtime_get:
 151         regulator_disable(hdmi.vdda_reg);
 152
 153         return r;
 154 }
 155
 156 static void hdmi_power_off_core(struct omap_dss_device *dssdev)
 157 {
 158         hdmi.core_enabled = false;
 159
 160         hdmi_runtime_put();
 161         regulator_disable(hdmi.vdda_reg);
 162 }
 163
 164 static int hdmi_power_on_full(struct omap_dss_device *dssdev)
 165 {
 166         int r;
 167         struct omap_video_timings *p;
 168         struct omap_overlay_manager *mgr = hdmi.output.manager;
 169         struct hdmi_wp_data *wp = &hdmi.wp;
 170         struct dss_pll_clock_info hdmi_cinfo = { 0 };
 171         unsigned pc;
 172
 173         r = hdmi_power_on_core(dssdev);
 174         if (r)
 175                 return r;
 176
 177         /* disable and clear irqs */
 178         hdmi_wp_clear_irqenable(wp, 0xffffffff);
 179         hdmi_wp_set_irqstatus(wp, 0xffffffff);
 180
 181         p = &hdmi.cfg.timings;
 182
 183         DSSDBG("hdmi_power_on x_res= %d y_res = %d\n", p->x_res, p->y_res);
 184
 185         pc = p->pixelclock;
 186         if (p->double_pixel)
 187                 pc *= 2;
 188
 189         hdmi_pll_compute(&hdmi.pll, pc, &hdmi_cinfo);
 190
 191         r = dss_pll_enable(&hdmi.pll.pll);
 192         if (r) {
 193                 DSSERR("Failed to enable PLL\n");
 194                 goto err_pll_enable;
 195         }
 196
 197         r = dss_pll_set_config(&hdmi.pll.pll, &hdmi_cinfo);
 198         if (r) {
 199                 DSSERR("Failed to configure PLL\n");
 200                 goto err_pll_cfg;
 201         }
 202
 203         r = hdmi_phy_configure(&hdmi.phy, hdmi_cinfo.clkdco,
 204                 hdmi_cinfo.clkout[0]);
 205         if (r) {
 206                 DSSDBG("Failed to configure PHY\n");
 207                 goto err_phy_cfg;
 208         }
 209
 210         r = hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
 211         if (r)
 212                 goto err_phy_pwr;
 213
 214         hdmi4_configure(&hdmi.core, &hdmi.wp, &hdmi.cfg);
 215
 216         /* bypass TV gamma table */
 217         dispc_enable_gamma_table(0);
 218
 219         /* tv size */
 220         dss_mgr_set_timings(mgr->id, p);
 221
 222         r = dss_mgr_enable(mgr->id);
 223         if (r)
 224                 goto err_mgr_enable;
 225
 226         r = hdmi_wp_video_start(&hdmi.wp);
 227         if (r)
 228                 goto err_vid_enable;
 229
 230         hdmi_wp_set_irqenable(wp,
 231                 HDMI_IRQ_LINK_CONNECT | HDMI_IRQ_LINK_DISCONNECT);
 232
 233         return 0;
 234
 235 err_vid_enable:
 236         dss_mgr_disable(mgr);
 237 err_mgr_enable:
 238         hdmi_wp_set_phy_pwr(&hdmi.wp, HDMI_PHYPWRCMD_OFF);
 239 err_phy_pwr:
 240 err_phy_cfg:
 241 err_pll_cfg:
 242         dss_pll_disable(&hdmi.pll.pll);
 243 err_pll_enable:
 244         hdmi_power_off_core(dssdev);
 245         return -EIO;
 246 }
 247
 248 static void hdmi_power_off_full(struct omap_dss_device *dssdev)
 249 {
 250         struct omap_overlay_manager *mgr = hdmi.output.manager;
 251
 252         hdmi_wp_clear_irqenable(&hdmi.wp, 0xffffffff);
 253
 254         hdmi_wp_video_stop(&hdmi.wp);
 255
 256         dss_mgr_disable(mgr);
 257
 258         hdmi_wp_set_phy_pwr(&hdmi.wp, HDMI_PHYPWRCMD_OFF);
 259
 260         dss_pll_disable(&hdmi.pll.pll);
 261
 262         hdmi_power_off_core(dssdev);
 263 }
 264
 265 static int hdmi_display_check_timing(struct omap_dss_device *dssdev,
 266                                         struct omap_video_timings *timings)
 267 {
 268         struct omap_dss_device *out = &hdmi.output;
 269
 270         if (!dispc_mgr_timings_ok(out->dispc_channel, timings))
 271                 return -EINVAL;
 272
 273         return 0;
 274 }
 275
 276 static void hdmi_display_set_timing(struct omap_dss_device *dssdev,
 277                 struct omap_video_timings *timings)
 278 {
 279         mutex_lock(&hdmi.lock);
 280
 281         hdmi.cfg.timings = *timings;
 282
 283         dispc_set_tv_pclk(timings->pixelclock);
 284
 285         mutex_unlock(&hdmi.lock);
 286 }
 287
 288 static void hdmi_display_get_timings(struct omap_dss_device *dssdev,
 289                 struct omap_video_timings *timings)
 290 {
 291         *timings = hdmi.cfg.timings;
 292 }
 293
 294 static void hdmi_dump_regs(struct seq_file *s)
 295 {
 296         mutex_lock(&hdmi.lock);
 297
 298         if (hdmi_runtime_get()) {
 299                 mutex_unlock(&hdmi.lock);
 300                 return;
 301         }
 302
 303         hdmi_wp_dump(&hdmi.wp, s);
 304         hdmi_pll_dump(&hdmi.pll, s);
 305         hdmi_phy_dump(&hdmi.phy, s);
 306         hdmi4_core_dump(&hdmi.core, s);
 307
 308         hdmi_runtime_put();
 309         mutex_unlock(&hdmi.lock);
 310 }
 311
 312 static int read_edid(u8 *buf, int len)
 313 {
 314         int r;
 315
 316         mutex_lock(&hdmi.lock);
 317
 318         r = hdmi_runtime_get();
 319         BUG_ON(r);
 320
 321         r = hdmi4_read_edid(&hdmi.core,  buf, len);
 322
 323         hdmi_runtime_put();
 324         mutex_unlock(&hdmi.lock);
 325
 326         return r;
 327 }
 328
 329 static void hdmi_start_audio_stream(struct omap_hdmi *hd)
 330 {
 331         hdmi_wp_audio_enable(&hd->wp, true);
 332         hdmi4_audio_start(&hd->core, &hd->wp);
 333 }
 334
 335 static void hdmi_stop_audio_stream(struct omap_hdmi *hd)
 336 {
 337         hdmi4_audio_stop(&hd->core, &hd->wp);
 338         hdmi_wp_audio_enable(&hd->wp, false);
 339 }
 340
 341 static int hdmi_display_enable(struct omap_dss_device *dssdev)
 342 {
 343         struct omap_dss_device *out = &hdmi.output;
 344         unsigned long flags;
 345         int r = 0;
 346
 347         DSSDBG("ENTER hdmi_display_enable\n");
 348
 349         mutex_lock(&hdmi.lock);
 350
 351         if (!out->dispc_channel_connected) {
 352                 DSSERR("failed to enable display: no output/manager\n");
 353                 r = -ENODEV;
 354                 goto err0;
 355         }
 356
 357         r = hdmi_power_on_full(dssdev);
 358         if (r) {
 359                 DSSERR("failed to power on device\n");
 360                 goto err0;
 361         }
 362
 363         if (hdmi.audio_configured) {
 364                 r = hdmi4_audio_config(&hdmi.core, &hdmi.wp, &hdmi.audio_config,
 365                                        hdmi.cfg.timings.pixelclock);
 366                 if (r) {
 367                         DSSERR("Error restoring audio configuration: %d", r);
 368                         hdmi.audio_abort_cb(&hdmi.pdev->dev);
 369                         hdmi.audio_configured = false;
 370                 }
 371         }
 372
 373         spin_lock_irqsave(&hdmi.audio_playing_lock, flags);
 374         if (hdmi.audio_configured && hdmi.audio_playing)
 375                 hdmi_start_audio_stream(&hdmi);
 376         hdmi.display_enabled = true;
 377         spin_unlock_irqrestore(&hdmi.audio_playing_lock, flags);
 378
 379         mutex_unlock(&hdmi.lock);
 380         return 0;
 381
 382 err0:
 383         mutex_unlock(&hdmi.lock);
 384         return r;
 385 }
 386
 387 static void hdmi_display_disable(struct omap_dss_device *dssdev)
 388 {
 389         unsigned long flags;
 390
 391         DSSDBG("Enter hdmi_display_disable\n");
 392
 393         mutex_lock(&hdmi.lock);
 394
 395         spin_lock_irqsave(&hdmi.audio_playing_lock, flags);
 396         hdmi_stop_audio_stream(&hdmi);
 397         hdmi.display_enabled = false;
 398         spin_unlock_irqrestore(&hdmi.audio_playing_lock, flags);
 399
 400         hdmi_power_off_full(dssdev);
 401
 402         mutex_unlock(&hdmi.lock);
 403 }
 404
 405 static int hdmi_core_enable(struct omap_dss_device *dssdev)
 406 {
 407         int r = 0;
 408
 409         DSSDBG("ENTER omapdss_hdmi_core_enable\n");
 410
 411         mutex_lock(&hdmi.lock);
 412
 413         r = hdmi_power_on_core(dssdev);
 414         if (r) {
 415                 DSSERR("failed to power on device\n");
 416                 goto err0;
 417         }
 418
 419         mutex_unlock(&hdmi.lock);
 420         return 0;
 421
 422 err0:
 423         mutex_unlock(&hdmi.lock);
 424         return r;
 425 }
 426
 427 static void hdmi_core_disable(struct omap_dss_device *dssdev)
 428 {
 429         DSSDBG("Enter omapdss_hdmi_core_disable\n");
 430
 431         mutex_lock(&hdmi.lock);
 432
 433         hdmi_power_off_core(dssdev);
 434
 435         mutex_unlock(&hdmi.lock);
 436 }
 437
 438 static int hdmi_connect(struct omap_dss_device *dssdev,
 439                 struct omap_dss_device *dst)
 440 {
 441         struct omap_overlay_manager *mgr;
 442         int r;
 443
 444         r = hdmi_init_regulator();
 445         if (r)
 446                 return r;
 447
 448         mgr = omap_dss_get_overlay_manager(dssdev->dispc_channel);
 449         if (!mgr)
 450                 return -ENODEV;
 451
 452         r = dss_mgr_connect(mgr->id, dssdev);
 453         if (r)
 454                 return r;
 455
 456         r = omapdss_output_set_device(dssdev, dst);
 457         if (r) {
 458                 DSSERR("failed to connect output to new device: %s\n",
 459                                 dst->name);
 460                 dss_mgr_disconnect(mgr->id, dssdev);
 461                 return r;
 462         }
 463
 464         return 0;
 465 }
 466
 467 static void hdmi_disconnect(struct omap_dss_device *dssdev,
 468                 struct omap_dss_device *dst)
 469 {
 470         WARN_ON(dst != dssdev->dst);
 471
 472         if (dst != dssdev->dst)
 473                 return;
 474
 475         omapdss_output_unset_device(dssdev);
 476
 477         if (dssdev->manager)
 478                 dss_mgr_disconnect(dssdev->manager->id, dssdev);
 479 }
 480
 481 static int hdmi_read_edid(struct omap_dss_device *dssdev,
 482                 u8 *edid, int len)
 483 {
 484         bool need_enable;
 485         int r;
 486
 487         need_enable = hdmi.core_enabled == false;
 488
 489         if (need_enable) {
 490                 r = hdmi_core_enable(dssdev);
 491                 if (r)
 492                         return r;
 493         }
 494
 495         r = read_edid(edid, len);
 496
 497         if (need_enable)
 498                 hdmi_core_disable(dssdev);
 499
 500         return r;
 501 }
 502
 503 static int hdmi_set_infoframe(struct omap_dss_device *dssdev,
 504                 const struct hdmi_avi_infoframe *avi)
 505 {
 506         hdmi.cfg.infoframe = *avi;
 507         return 0;
 508 }
 509
 510 static int hdmi_set_hdmi_mode(struct omap_dss_device *dssdev,
 511                 bool hdmi_mode)
 512 {
 513         hdmi.cfg.hdmi_dvi_mode = hdmi_mode ? HDMI_HDMI : HDMI_DVI;
 514         return 0;
 515 }
 516
 517 static const struct omapdss_hdmi_ops hdmi_ops = {
 518         .connect                = hdmi_connect,
 519         .disconnect             = hdmi_disconnect,
 520
 521         .enable                 = hdmi_display_enable,
 522         .disable                = hdmi_display_disable,
 523
 524         .check_timings          = hdmi_display_check_timing,
 525         .set_timings            = hdmi_display_set_timing,
 526         .get_timings            = hdmi_display_get_timings,
 527
 528         .read_edid              = hdmi_read_edid,
 529         .set_infoframe          = hdmi_set_infoframe,
 530         .set_hdmi_mode          = hdmi_set_hdmi_mode,
 531 };
 532
 533 static void hdmi_init_output(struct platform_device *pdev)
 534 {
 535         struct omap_dss_device *out = &hdmi.output;
 536
 537         out->dev = &pdev->dev;
 538         out->id = OMAP_DSS_OUTPUT_HDMI;
 539         out->output_type = OMAP_DISPLAY_TYPE_HDMI;
 540         out->name = "hdmi.0";
 541         out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT;
 542         out->ops.hdmi = &hdmi_ops;
 543         out->owner = THIS_MODULE;
 544
 545         omapdss_register_output(out);
 546 }
 547
 548 static void hdmi_uninit_output(struct platform_device *pdev)
 549 {
 550         struct omap_dss_device *out = &hdmi.output;
 551
 552         omapdss_unregister_output(out);
 553 }
 554
 555 static int hdmi_probe_of(struct platform_device *pdev)
 556 {
 557         struct device_node *node = pdev->dev.of_node;
 558         struct device_node *ep;
 559         int r;
 560
 561         ep = omapdss_of_get_first_endpoint(node);
 562         if (!ep)
 563                 return 0;
 564
 565         r = hdmi_parse_lanes_of(pdev, ep, &hdmi.phy);
 566         if (r)
 567                 goto err;
 568
 569         of_node_put(ep);
 570         return 0;
 571
 572 err:
 573         of_node_put(ep);
 574         return r;
 575 }
 576
 577 /* Audio callbacks */
 578 static int hdmi_audio_startup(struct device *dev,
 579                               void (*abort_cb)(struct device *dev))
 580 {
 581         struct omap_hdmi *hd = dev_get_drvdata(dev);
 582         int ret = 0;
 583
 584         mutex_lock(&hd->lock);
 585
 586         if (!hdmi_mode_has_audio(&hd->cfg) || !hd->display_enabled) {
 587                 ret = -EPERM;
 588                 goto out;
 589         }
 590
 591         hd->audio_abort_cb = abort_cb;
 592
 593 out:
 594         mutex_unlock(&hd->lock);
 595
 596         return ret;
 597 }
 598
 599 static int hdmi_audio_shutdown(struct device *dev)
 600 {
 601         struct omap_hdmi *hd = dev_get_drvdata(dev);
 602
 603         mutex_lock(&hd->lock);
 604         hd->audio_abort_cb = NULL;
 605         hd->audio_configured = false;
 606         hd->audio_playing = false;
 607         mutex_unlock(&hd->lock);
 608
 609         return 0;
 610 }
 611
 612 static int hdmi_audio_start(struct device *dev)
 613 {
 614         struct omap_hdmi *hd = dev_get_drvdata(dev);
 615         unsigned long flags;
 616
 617         WARN_ON(!hdmi_mode_has_audio(&hd->cfg));
 618
 619         spin_lock_irqsave(&hd->audio_playing_lock, flags);
 620
 621         if (hd->display_enabled)
 622                 hdmi_start_audio_stream(hd);
 623         hd->audio_playing = true;
 624
 625         spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
 626         return 0;
 627 }
 628
 629 static void hdmi_audio_stop(struct device *dev)
 630 {
 631         struct omap_hdmi *hd = dev_get_drvdata(dev);
 632         unsigned long flags;
 633
 634         WARN_ON(!hdmi_mode_has_audio(&hd->cfg));
 635
 636         spin_lock_irqsave(&hd->audio_playing_lock, flags);
 637
 638         if (hd->display_enabled)
 639                 hdmi_stop_audio_stream(hd);
 640         hd->audio_playing = false;
 641
 642         spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
 643 }
 644
 645 static int hdmi_audio_config(struct device *dev,
 646                              struct omap_dss_audio *dss_audio)
 647 {
 648         struct omap_hdmi *hd = dev_get_drvdata(dev);
 649         int ret;
 650
 651         mutex_lock(&hd->lock);
 652
 653         if (!hdmi_mode_has_audio(&hd->cfg) || !hd->display_enabled) {
 654                 ret = -EPERM;
 655                 goto out;
 656         }
 657
 658         ret = hdmi4_audio_config(&hd->core, &hd->wp, dss_audio,
 659                                  hd->cfg.timings.pixelclock);
 660         if (!ret) {
 661                 hd->audio_configured = true;
 662                 hd->audio_config = *dss_audio;
 663         }
 664 out:
 665         mutex_unlock(&hd->lock);
 666
 667         return ret;
 668 }
 669
 670 static const struct omap_hdmi_audio_ops hdmi_audio_ops = {
 671         .audio_startup = hdmi_audio_startup,
 672         .audio_shutdown = hdmi_audio_shutdown,
 673         .audio_start = hdmi_audio_start,
 674         .audio_stop = hdmi_audio_stop,
 675         .audio_config = hdmi_audio_config,
 676 };
 677
 678 static int hdmi_audio_register(struct device *dev)
 679 {
 680         struct omap_hdmi_audio_pdata pdata = {
 681                 .dev = dev,
 682                 .dss_version = omapdss_get_version(),
 683                 .audio_dma_addr = hdmi_wp_get_audio_dma_addr(&hdmi.wp),
 684                 .ops = &hdmi_audio_ops,
 685         };
 686
 687         hdmi.audio_pdev = platform_device_register_data(
 688                 dev, "omap-hdmi-audio", PLATFORM_DEVID_AUTO,
 689                 &pdata, sizeof(pdata));
 690
 691         if (IS_ERR(hdmi.audio_pdev))
 692                 return PTR_ERR(hdmi.audio_pdev);
 693
 694         return 0;
 695 }
 696
 697 /* HDMI HW IP initialisation */
 698 static int hdmi4_bind(struct device *dev, struct device *master, void *data)
 699 {
 700         struct platform_device *pdev = to_platform_device(dev);
 701         int r;
 702         int irq;
 703
 704         hdmi.pdev = pdev;
 705         dev_set_drvdata(&pdev->dev, &hdmi);
 706
 707         mutex_init(&hdmi.lock);
 708         spin_lock_init(&hdmi.audio_playing_lock);
 709
 710         if (pdev->dev.of_node) {
 711                 r = hdmi_probe_of(pdev);
 712                 if (r)
 713                         return r;
 714         }
 715
 716         r = hdmi_wp_init(pdev, &hdmi.wp);
 717         if (r)
 718                 return r;
 719
 720         r = hdmi_pll_init(pdev, &hdmi.pll, &hdmi.wp);
 721         if (r)
 722                 return r;
 723
 724         r = hdmi_phy_init(pdev, &hdmi.phy);
 725         if (r)
 726                 goto err;
 727
 728         r = hdmi4_core_init(pdev, &hdmi.core);
 729         if (r)
 730                 goto err;
 731
 732         irq = platform_get_irq(pdev, 0);
 733         if (irq < 0) {
 734                 DSSERR("platform_get_irq failed\n");
 735                 r = -ENODEV;
 736                 goto err;
 737         }
 738
 739         r = devm_request_threaded_irq(&pdev->dev, irq,
 740                         NULL, hdmi_irq_handler,
 741                         IRQF_ONESHOT, "OMAP HDMI", &hdmi.wp);
 742         if (r) {
 743                 DSSERR("HDMI IRQ request failed\n");
 744                 goto err;
 745         }
 746
 747         pm_runtime_enable(&pdev->dev);
 748
 749         hdmi_init_output(pdev);
 750
 751         r = hdmi_audio_register(&pdev->dev);
 752         if (r) {
 753                 DSSERR("Registering HDMI audio failed\n");
 754                 hdmi_uninit_output(pdev);
 755                 pm_runtime_disable(&pdev->dev);
 756                 return r;
 757         }
 758
 759         dss_debugfs_create_file("hdmi", hdmi_dump_regs);
 760
 761         return 0;
 762 err:
 763         hdmi_pll_uninit(&hdmi.pll);
 764         return r;
 765 }
 766
 767 static void hdmi4_unbind(struct device *dev, struct device *master, void *data)
 768 {
 769         struct platform_device *pdev = to_platform_device(dev);
 770
 771         if (hdmi.audio_pdev)
 772                 platform_device_unregister(hdmi.audio_pdev);
 773
 774         hdmi_uninit_output(pdev);
 775
 776         hdmi_pll_uninit(&hdmi.pll);
 777
 778         pm_runtime_disable(&pdev->dev);
 779 }
 780
 781 static const struct component_ops hdmi4_component_ops = {
 782         .bind   = hdmi4_bind,
 783         .unbind = hdmi4_unbind,
 784 };
 785
 786 static int hdmi4_probe(struct platform_device *pdev)
 787 {
 788         return component_add(&pdev->dev, &hdmi4_component_ops);
 789 }
 790
 791 static int hdmi4_remove(struct platform_device *pdev)
 792 {
 793         component_del(&pdev->dev, &hdmi4_component_ops);
 794         return 0;
 795 }
 796
 797 static int hdmi_runtime_suspend(struct device *dev)
 798 {
 799         dispc_runtime_put();
 800
 801         return 0;
 802 }
 803
 804 static int hdmi_runtime_resume(struct device *dev)
 805 {
 806         int r;
 807
 808         r = dispc_runtime_get();
 809         if (r < 0)
 810                 return r;
 811
 812         return 0;
 813 }
 814
 815 static const struct dev_pm_ops hdmi_pm_ops = {
 816         .runtime_suspend = hdmi_runtime_suspend,
 817         .runtime_resume = hdmi_runtime_resume,
 818 };
 819
 820 static const struct of_device_id hdmi_of_match[] = {
 821         { .compatible = "ti,omap4-hdmi", },
 822         {},
 823 };
 824
 825 static struct platform_driver omapdss_hdmihw_driver = {
 826         .probe          = hdmi4_probe,
 827         .remove         = hdmi4_remove,
 828         .driver         = {
 829                 .name   = "omapdss_hdmi",
 830                 .pm     = &hdmi_pm_ops,
 831                 .of_match_table = hdmi_of_match,
 832                 .suppress_bind_attrs = true,
 833         },
 834 };
 835
 836 int __init hdmi4_init_platform_driver(void)
 837 {
 838         return platform_driver_register(&omapdss_hdmihw_driver);
 839 }
 840
 841 void hdmi4_uninit_platform_driver(void)
 842 {
 843         platform_driver_unregister(&omapdss_hdmihw_driver);
 844 }