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 <sound/omap-hdmi-audio.h>
  38
  39 #include "omapdss.h"
  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         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         hdmi.vdda_reg = reg;
 118
 119         return 0;
 120 }
 121
 122 static int hdmi_power_on_core(struct omap_dss_device *dssdev)
 123 {
 124         int r;
 125
 126         r = regulator_enable(hdmi.vdda_reg);
 127         if (r)
 128                 return r;
 129
 130         r = hdmi_runtime_get();
 131         if (r)
 132                 goto err_runtime_get;
 133
 134         /* Make selection of HDMI in DSS */
 135         dss_select_hdmi_venc_clk_source(DSS_HDMI_M_PCLK);
 136
 137         hdmi.core_enabled = true;
 138
 139         return 0;
 140
 141 err_runtime_get:
 142         regulator_disable(hdmi.vdda_reg);
 143
 144         return r;
 145 }
 146
 147 static void hdmi_power_off_core(struct omap_dss_device *dssdev)
 148 {
 149         hdmi.core_enabled = false;
 150
 151         hdmi_runtime_put();
 152         regulator_disable(hdmi.vdda_reg);
 153 }
 154
 155 static int hdmi_power_on_full(struct omap_dss_device *dssdev)
 156 {
 157         int r;
 158         struct omap_video_timings *p;
 159         enum omap_channel channel = dssdev->dispc_channel;
 160         struct hdmi_wp_data *wp = &hdmi.wp;
 161         struct dss_pll_clock_info hdmi_cinfo = { 0 };
 162         unsigned pc;
 163
 164         r = hdmi_power_on_core(dssdev);
 165         if (r)
 166                 return r;
 167
 168         /* disable and clear irqs */
 169         hdmi_wp_clear_irqenable(wp, 0xffffffff);
 170         hdmi_wp_set_irqstatus(wp, 0xffffffff);
 171
 172         p = &hdmi.cfg.timings;
 173
 174         DSSDBG("hdmi_power_on hactive= %d vactive = %d\n", p->hactive,
 175                p->vactive);
 176
 177         pc = p->pixelclock;
 178         if (p->double_pixel)
 179                 pc *= 2;
 180
 181         /* DSS_HDMI_TCLK is bitclk / 10 */
 182         pc *= 10;
 183
 184         dss_pll_calc_b(&hdmi.pll.pll, clk_get_rate(hdmi.pll.pll.clkin),
 185                 pc, &hdmi_cinfo);
 186
 187         r = dss_pll_enable(&hdmi.pll.pll);
 188         if (r) {
 189                 DSSERR("Failed to enable PLL\n");
 190                 goto err_pll_enable;
 191         }
 192
 193         r = dss_pll_set_config(&hdmi.pll.pll, &hdmi_cinfo);
 194         if (r) {
 195                 DSSERR("Failed to configure PLL\n");
 196                 goto err_pll_cfg;
 197         }
 198
 199         r = hdmi_phy_configure(&hdmi.phy, hdmi_cinfo.clkdco,
 200                 hdmi_cinfo.clkout[0]);
 201         if (r) {
 202                 DSSDBG("Failed to configure PHY\n");
 203                 goto err_phy_cfg;
 204         }
 205
 206         r = hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
 207         if (r)
 208                 goto err_phy_pwr;
 209
 210         hdmi4_configure(&hdmi.core, &hdmi.wp, &hdmi.cfg);
 211
 212         /* tv size */
 213         dss_mgr_set_timings(channel, p);
 214
 215         r = dss_mgr_enable(channel);
 216         if (r)
 217                 goto err_mgr_enable;
 218
 219         r = hdmi_wp_video_start(&hdmi.wp);
 220         if (r)
 221                 goto err_vid_enable;
 222
 223         hdmi_wp_set_irqenable(wp,
 224                 HDMI_IRQ_LINK_CONNECT | HDMI_IRQ_LINK_DISCONNECT);
 225
 226         return 0;
 227
 228 err_vid_enable:
 229         dss_mgr_disable(channel);
 230 err_mgr_enable:
 231         hdmi_wp_set_phy_pwr(&hdmi.wp, HDMI_PHYPWRCMD_OFF);
 232 err_phy_pwr:
 233 err_phy_cfg:
 234 err_pll_cfg:
 235         dss_pll_disable(&hdmi.pll.pll);
 236 err_pll_enable:
 237         hdmi_power_off_core(dssdev);
 238         return -EIO;
 239 }
 240
 241 static void hdmi_power_off_full(struct omap_dss_device *dssdev)
 242 {
 243         enum omap_channel channel = dssdev->dispc_channel;
 244
 245         hdmi_wp_clear_irqenable(&hdmi.wp, 0xffffffff);
 246
 247         hdmi_wp_video_stop(&hdmi.wp);
 248
 249         dss_mgr_disable(channel);
 250
 251         hdmi_wp_set_phy_pwr(&hdmi.wp, HDMI_PHYPWRCMD_OFF);
 252
 253         dss_pll_disable(&hdmi.pll.pll);
 254
 255         hdmi_power_off_core(dssdev);
 256 }
 257
 258 static int hdmi_display_check_timing(struct omap_dss_device *dssdev,
 259                                         struct omap_video_timings *timings)
 260 {
 261         if (!dispc_mgr_timings_ok(dssdev->dispc_channel, timings))
 262                 return -EINVAL;
 263
 264         return 0;
 265 }
 266
 267 static void hdmi_display_set_timing(struct omap_dss_device *dssdev,
 268                 struct omap_video_timings *timings)
 269 {
 270         mutex_lock(&hdmi.lock);
 271
 272         hdmi.cfg.timings = *timings;
 273
 274         dispc_set_tv_pclk(timings->pixelclock);
 275
 276         mutex_unlock(&hdmi.lock);
 277 }
 278
 279 static void hdmi_display_get_timings(struct omap_dss_device *dssdev,
 280                 struct omap_video_timings *timings)
 281 {
 282         *timings = hdmi.cfg.timings;
 283 }
 284
 285 static void hdmi_dump_regs(struct seq_file *s)
 286 {
 287         mutex_lock(&hdmi.lock);
 288
 289         if (hdmi_runtime_get()) {
 290                 mutex_unlock(&hdmi.lock);
 291                 return;
 292         }
 293
 294         hdmi_wp_dump(&hdmi.wp, s);
 295         hdmi_pll_dump(&hdmi.pll, s);
 296         hdmi_phy_dump(&hdmi.phy, s);
 297         hdmi4_core_dump(&hdmi.core, s);
 298
 299         hdmi_runtime_put();
 300         mutex_unlock(&hdmi.lock);
 301 }
 302
 303 static int read_edid(u8 *buf, int len)
 304 {
 305         int r;
 306
 307         mutex_lock(&hdmi.lock);
 308
 309         r = hdmi_runtime_get();
 310         BUG_ON(r);
 311
 312         r = hdmi4_read_edid(&hdmi.core,  buf, len);
 313
 314         hdmi_runtime_put();
 315         mutex_unlock(&hdmi.lock);
 316
 317         return r;
 318 }
 319
 320 static void hdmi_start_audio_stream(struct omap_hdmi *hd)
 321 {
 322         hdmi_wp_audio_enable(&hd->wp, true);
 323         hdmi4_audio_start(&hd->core, &hd->wp);
 324 }
 325
 326 static void hdmi_stop_audio_stream(struct omap_hdmi *hd)
 327 {
 328         hdmi4_audio_stop(&hd->core, &hd->wp);
 329         hdmi_wp_audio_enable(&hd->wp, false);
 330 }
 331
 332 static int hdmi_display_enable(struct omap_dss_device *dssdev)
 333 {
 334         struct omap_dss_device *out = &hdmi.output;
 335         unsigned long flags;
 336         int r = 0;
 337
 338         DSSDBG("ENTER hdmi_display_enable\n");
 339
 340         mutex_lock(&hdmi.lock);
 341
 342         if (!out->dispc_channel_connected) {
 343                 DSSERR("failed to enable display: no output/manager\n");
 344                 r = -ENODEV;
 345                 goto err0;
 346         }
 347
 348         r = hdmi_power_on_full(dssdev);
 349         if (r) {
 350                 DSSERR("failed to power on device\n");
 351                 goto err0;
 352         }
 353
 354         if (hdmi.audio_configured) {
 355                 r = hdmi4_audio_config(&hdmi.core, &hdmi.wp, &hdmi.audio_config,
 356                                        hdmi.cfg.timings.pixelclock);
 357                 if (r) {
 358                         DSSERR("Error restoring audio configuration: %d", r);
 359                         hdmi.audio_abort_cb(&hdmi.pdev->dev);
 360                         hdmi.audio_configured = false;
 361                 }
 362         }
 363
 364         spin_lock_irqsave(&hdmi.audio_playing_lock, flags);
 365         if (hdmi.audio_configured && hdmi.audio_playing)
 366                 hdmi_start_audio_stream(&hdmi);
 367         hdmi.display_enabled = true;
 368         spin_unlock_irqrestore(&hdmi.audio_playing_lock, flags);
 369
 370         mutex_unlock(&hdmi.lock);
 371         return 0;
 372
 373 err0:
 374         mutex_unlock(&hdmi.lock);
 375         return r;
 376 }
 377
 378 static void hdmi_display_disable(struct omap_dss_device *dssdev)
 379 {
 380         unsigned long flags;
 381
 382         DSSDBG("Enter hdmi_display_disable\n");
 383
 384         mutex_lock(&hdmi.lock);
 385
 386         spin_lock_irqsave(&hdmi.audio_playing_lock, flags);
 387         hdmi_stop_audio_stream(&hdmi);
 388         hdmi.display_enabled = false;
 389         spin_unlock_irqrestore(&hdmi.audio_playing_lock, flags);
 390
 391         hdmi_power_off_full(dssdev);
 392
 393         mutex_unlock(&hdmi.lock);
 394 }
 395
 396 static int hdmi_core_enable(struct omap_dss_device *dssdev)
 397 {
 398         int r = 0;
 399
 400         DSSDBG("ENTER omapdss_hdmi_core_enable\n");
 401
 402         mutex_lock(&hdmi.lock);
 403
 404         r = hdmi_power_on_core(dssdev);
 405         if (r) {
 406                 DSSERR("failed to power on device\n");
 407                 goto err0;
 408         }
 409
 410         mutex_unlock(&hdmi.lock);
 411         return 0;
 412
 413 err0:
 414         mutex_unlock(&hdmi.lock);
 415         return r;
 416 }
 417
 418 static void hdmi_core_disable(struct omap_dss_device *dssdev)
 419 {
 420         DSSDBG("Enter omapdss_hdmi_core_disable\n");
 421
 422         mutex_lock(&hdmi.lock);
 423
 424         hdmi_power_off_core(dssdev);
 425
 426         mutex_unlock(&hdmi.lock);
 427 }
 428
 429 static int hdmi_connect(struct omap_dss_device *dssdev,
 430                 struct omap_dss_device *dst)
 431 {
 432         enum omap_channel channel = dssdev->dispc_channel;
 433         int r;
 434
 435         r = hdmi_init_regulator();
 436         if (r)
 437                 return r;
 438
 439         r = dss_mgr_connect(channel, dssdev);
 440         if (r)
 441                 return r;
 442
 443         r = omapdss_output_set_device(dssdev, dst);
 444         if (r) {
 445                 DSSERR("failed to connect output to new device: %s\n",
 446                                 dst->name);
 447                 dss_mgr_disconnect(channel, dssdev);
 448                 return r;
 449         }
 450
 451         return 0;
 452 }
 453
 454 static void hdmi_disconnect(struct omap_dss_device *dssdev,
 455                 struct omap_dss_device *dst)
 456 {
 457         enum omap_channel channel = dssdev->dispc_channel;
 458
 459         WARN_ON(dst != dssdev->dst);
 460
 461         if (dst != dssdev->dst)
 462                 return;
 463
 464         omapdss_output_unset_device(dssdev);
 465
 466         dss_mgr_disconnect(channel, dssdev);
 467 }
 468
 469 static int hdmi_read_edid(struct omap_dss_device *dssdev,
 470                 u8 *edid, int len)
 471 {
 472         bool need_enable;
 473         int r;
 474
 475         need_enable = hdmi.core_enabled == false;
 476
 477         if (need_enable) {
 478                 r = hdmi_core_enable(dssdev);
 479                 if (r)
 480                         return r;
 481         }
 482
 483         r = read_edid(edid, len);
 484
 485         if (need_enable)
 486                 hdmi_core_disable(dssdev);
 487
 488         return r;
 489 }
 490
 491 static int hdmi_set_infoframe(struct omap_dss_device *dssdev,
 492                 const struct hdmi_avi_infoframe *avi)
 493 {
 494         hdmi.cfg.infoframe = *avi;
 495         return 0;
 496 }
 497
 498 static int hdmi_set_hdmi_mode(struct omap_dss_device *dssdev,
 499                 bool hdmi_mode)
 500 {
 501         hdmi.cfg.hdmi_dvi_mode = hdmi_mode ? HDMI_HDMI : HDMI_DVI;
 502         return 0;
 503 }
 504
 505 static const struct omapdss_hdmi_ops hdmi_ops = {
 506         .connect                = hdmi_connect,
 507         .disconnect             = hdmi_disconnect,
 508
 509         .enable                 = hdmi_display_enable,
 510         .disable                = hdmi_display_disable,
 511
 512         .check_timings          = hdmi_display_check_timing,
 513         .set_timings            = hdmi_display_set_timing,
 514         .get_timings            = hdmi_display_get_timings,
 515
 516         .read_edid              = hdmi_read_edid,
 517         .set_infoframe          = hdmi_set_infoframe,
 518         .set_hdmi_mode          = hdmi_set_hdmi_mode,
 519 };
 520
 521 static void hdmi_init_output(struct platform_device *pdev)
 522 {
 523         struct omap_dss_device *out = &hdmi.output;
 524
 525         out->dev = &pdev->dev;
 526         out->id = OMAP_DSS_OUTPUT_HDMI;
 527         out->output_type = OMAP_DISPLAY_TYPE_HDMI;
 528         out->name = "hdmi.0";
 529         out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT;
 530         out->ops.hdmi = &hdmi_ops;
 531         out->owner = THIS_MODULE;
 532
 533         omapdss_register_output(out);
 534 }
 535
 536 static void hdmi_uninit_output(struct platform_device *pdev)
 537 {
 538         struct omap_dss_device *out = &hdmi.output;
 539
 540         omapdss_unregister_output(out);
 541 }
 542
 543 static int hdmi_probe_of(struct platform_device *pdev)
 544 {
 545         struct device_node *node = pdev->dev.of_node;
 546         struct device_node *ep;
 547         int r;
 548
 549         ep = omapdss_of_get_first_endpoint(node);
 550         if (!ep)
 551                 return 0;
 552
 553         r = hdmi_parse_lanes_of(pdev, ep, &hdmi.phy);
 554         if (r)
 555                 goto err;
 556
 557         of_node_put(ep);
 558         return 0;
 559
 560 err:
 561         of_node_put(ep);
 562         return r;
 563 }
 564
 565 /* Audio callbacks */
 566 static int hdmi_audio_startup(struct device *dev,
 567                               void (*abort_cb)(struct device *dev))
 568 {
 569         struct omap_hdmi *hd = dev_get_drvdata(dev);
 570         int ret = 0;
 571
 572         mutex_lock(&hd->lock);
 573
 574         if (!hdmi_mode_has_audio(&hd->cfg) || !hd->display_enabled) {
 575                 ret = -EPERM;
 576                 goto out;
 577         }
 578
 579         hd->audio_abort_cb = abort_cb;
 580
 581 out:
 582         mutex_unlock(&hd->lock);
 583
 584         return ret;
 585 }
 586
 587 static int hdmi_audio_shutdown(struct device *dev)
 588 {
 589         struct omap_hdmi *hd = dev_get_drvdata(dev);
 590
 591         mutex_lock(&hd->lock);
 592         hd->audio_abort_cb = NULL;
 593         hd->audio_configured = false;
 594         hd->audio_playing = false;
 595         mutex_unlock(&hd->lock);
 596
 597         return 0;
 598 }
 599
 600 static int hdmi_audio_start(struct device *dev)
 601 {
 602         struct omap_hdmi *hd = dev_get_drvdata(dev);
 603         unsigned long flags;
 604
 605         WARN_ON(!hdmi_mode_has_audio(&hd->cfg));
 606
 607         spin_lock_irqsave(&hd->audio_playing_lock, flags);
 608
 609         if (hd->display_enabled)
 610                 hdmi_start_audio_stream(hd);
 611         hd->audio_playing = true;
 612
 613         spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
 614         return 0;
 615 }
 616
 617 static void hdmi_audio_stop(struct device *dev)
 618 {
 619         struct omap_hdmi *hd = dev_get_drvdata(dev);
 620         unsigned long flags;
 621
 622         WARN_ON(!hdmi_mode_has_audio(&hd->cfg));
 623
 624         spin_lock_irqsave(&hd->audio_playing_lock, flags);
 625
 626         if (hd->display_enabled)
 627                 hdmi_stop_audio_stream(hd);
 628         hd->audio_playing = false;
 629
 630         spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
 631 }
 632
 633 static int hdmi_audio_config(struct device *dev,
 634                              struct omap_dss_audio *dss_audio)
 635 {
 636         struct omap_hdmi *hd = dev_get_drvdata(dev);
 637         int ret;
 638
 639         mutex_lock(&hd->lock);
 640
 641         if (!hdmi_mode_has_audio(&hd->cfg) || !hd->display_enabled) {
 642                 ret = -EPERM;
 643                 goto out;
 644         }
 645
 646         ret = hdmi4_audio_config(&hd->core, &hd->wp, dss_audio,
 647                                  hd->cfg.timings.pixelclock);
 648         if (!ret) {
 649                 hd->audio_configured = true;
 650                 hd->audio_config = *dss_audio;
 651         }
 652 out:
 653         mutex_unlock(&hd->lock);
 654
 655         return ret;
 656 }
 657
 658 static const struct omap_hdmi_audio_ops hdmi_audio_ops = {
 659         .audio_startup = hdmi_audio_startup,
 660         .audio_shutdown = hdmi_audio_shutdown,
 661         .audio_start = hdmi_audio_start,
 662         .audio_stop = hdmi_audio_stop,
 663         .audio_config = hdmi_audio_config,
 664 };
 665
 666 static int hdmi_audio_register(struct device *dev)
 667 {
 668         struct omap_hdmi_audio_pdata pdata = {
 669                 .dev = dev,
 670                 .dss_version = omapdss_get_version(),
 671                 .audio_dma_addr = hdmi_wp_get_audio_dma_addr(&hdmi.wp),
 672                 .ops = &hdmi_audio_ops,
 673         };
 674
 675         hdmi.audio_pdev = platform_device_register_data(
 676                 dev, "omap-hdmi-audio", PLATFORM_DEVID_AUTO,
 677                 &pdata, sizeof(pdata));
 678
 679         if (IS_ERR(hdmi.audio_pdev))
 680                 return PTR_ERR(hdmi.audio_pdev);
 681
 682         return 0;
 683 }
 684
 685 /* HDMI HW IP initialisation */
 686 static int hdmi4_bind(struct device *dev, struct device *master, void *data)
 687 {
 688         struct platform_device *pdev = to_platform_device(dev);
 689         int r;
 690         int irq;
 691
 692         hdmi.pdev = pdev;
 693         dev_set_drvdata(&pdev->dev, &hdmi);
 694
 695         mutex_init(&hdmi.lock);
 696         spin_lock_init(&hdmi.audio_playing_lock);
 697
 698         if (pdev->dev.of_node) {
 699                 r = hdmi_probe_of(pdev);
 700                 if (r)
 701                         return r;
 702         }
 703
 704         r = hdmi_wp_init(pdev, &hdmi.wp);
 705         if (r)
 706                 return r;
 707
 708         r = hdmi_pll_init(pdev, &hdmi.pll, &hdmi.wp);
 709         if (r)
 710                 return r;
 711
 712         r = hdmi_phy_init(pdev, &hdmi.phy);
 713         if (r)
 714                 goto err;
 715
 716         r = hdmi4_core_init(pdev, &hdmi.core);
 717         if (r)
 718                 goto err;
 719
 720         irq = platform_get_irq(pdev, 0);
 721         if (irq < 0) {
 722                 DSSERR("platform_get_irq failed\n");
 723                 r = -ENODEV;
 724                 goto err;
 725         }
 726
 727         r = devm_request_threaded_irq(&pdev->dev, irq,
 728                         NULL, hdmi_irq_handler,
 729                         IRQF_ONESHOT, "OMAP HDMI", &hdmi.wp);
 730         if (r) {
 731                 DSSERR("HDMI IRQ request failed\n");
 732                 goto err;
 733         }
 734
 735         pm_runtime_enable(&pdev->dev);
 736
 737         hdmi_init_output(pdev);
 738
 739         r = hdmi_audio_register(&pdev->dev);
 740         if (r) {
 741                 DSSERR("Registering HDMI audio failed\n");
 742                 hdmi_uninit_output(pdev);
 743                 pm_runtime_disable(&pdev->dev);
 744                 return r;
 745         }
 746
 747         dss_debugfs_create_file("hdmi", hdmi_dump_regs);
 748
 749         return 0;
 750 err:
 751         hdmi_pll_uninit(&hdmi.pll);
 752         return r;
 753 }
 754
 755 static void hdmi4_unbind(struct device *dev, struct device *master, void *data)
 756 {
 757         struct platform_device *pdev = to_platform_device(dev);
 758
 759         if (hdmi.audio_pdev)
 760                 platform_device_unregister(hdmi.audio_pdev);
 761
 762         hdmi_uninit_output(pdev);
 763
 764         hdmi_pll_uninit(&hdmi.pll);
 765
 766         pm_runtime_disable(&pdev->dev);
 767 }
 768
 769 static const struct component_ops hdmi4_component_ops = {
 770         .bind   = hdmi4_bind,
 771         .unbind = hdmi4_unbind,
 772 };
 773
 774 static int hdmi4_probe(struct platform_device *pdev)
 775 {
 776         return component_add(&pdev->dev, &hdmi4_component_ops);
 777 }
 778
 779 static int hdmi4_remove(struct platform_device *pdev)
 780 {
 781         component_del(&pdev->dev, &hdmi4_component_ops);
 782         return 0;
 783 }
 784
 785 static int hdmi_runtime_suspend(struct device *dev)
 786 {
 787         dispc_runtime_put();
 788
 789         return 0;
 790 }
 791
 792 static int hdmi_runtime_resume(struct device *dev)
 793 {
 794         int r;
 795
 796         r = dispc_runtime_get();
 797         if (r < 0)
 798                 return r;
 799
 800         return 0;
 801 }
 802
 803 static const struct dev_pm_ops hdmi_pm_ops = {
 804         .runtime_suspend = hdmi_runtime_suspend,
 805         .runtime_resume = hdmi_runtime_resume,
 806 };
 807
 808 static const struct of_device_id hdmi_of_match[] = {
 809         { .compatible = "ti,omap4-hdmi", },
 810         {},
 811 };
 812
 813 static struct platform_driver omapdss_hdmihw_driver = {
 814         .probe          = hdmi4_probe,
 815         .remove         = hdmi4_remove,
 816         .driver         = {
 817                 .name   = "omapdss_hdmi",
 818                 .pm     = &hdmi_pm_ops,
 819                 .of_match_table = hdmi_of_match,
 820                 .suppress_bind_attrs = true,
 821         },
 822 };
 823
 824 int __init hdmi4_init_platform_driver(void)
 825 {
 826         return platform_driver_register(&omapdss_hdmihw_driver);
 827 }
 828
 829 void hdmi4_uninit_platform_driver(void)
 830 {
 831         platform_driver_unregister(&omapdss_hdmihw_driver);
 832 }