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