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         enum omap_channel channel = dssdev->dispc_channel;
 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(channel, p);
 221
 222         r = dss_mgr_enable(channel);
 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(channel);
 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         enum omap_channel channel = dssdev->dispc_channel;
 251
 252         hdmi_wp_clear_irqenable(&hdmi.wp, 0xffffffff);
 253
 254         hdmi_wp_video_stop(&hdmi.wp);
 255
 256         dss_mgr_disable(channel);
 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         if (!dispc_mgr_timings_ok(dssdev->dispc_channel, timings))
 269                 return -EINVAL;
 270
 271         return 0;
 272 }
 273
 274 static void hdmi_display_set_timing(struct omap_dss_device *dssdev,
 275                 struct omap_video_timings *timings)
 276 {
 277         mutex_lock(&hdmi.lock);
 278
 279         hdmi.cfg.timings = *timings;
 280
 281         dispc_set_tv_pclk(timings->pixelclock);
 282
 283         mutex_unlock(&hdmi.lock);
 284 }
 285
 286 static void hdmi_display_get_timings(struct omap_dss_device *dssdev,
 287                 struct omap_video_timings *timings)
 288 {
 289         *timings = hdmi.cfg.timings;
 290 }
 291
 292 static void hdmi_dump_regs(struct seq_file *s)
 293 {
 294         mutex_lock(&hdmi.lock);
 295
 296         if (hdmi_runtime_get()) {
 297                 mutex_unlock(&hdmi.lock);
 298                 return;
 299         }
 300
 301         hdmi_wp_dump(&hdmi.wp, s);
 302         hdmi_pll_dump(&hdmi.pll, s);
 303         hdmi_phy_dump(&hdmi.phy, s);
 304         hdmi4_core_dump(&hdmi.core, s);
 305
 306         hdmi_runtime_put();
 307         mutex_unlock(&hdmi.lock);
 308 }
 309
 310 static int read_edid(u8 *buf, int len)
 311 {
 312         int r;
 313
 314         mutex_lock(&hdmi.lock);
 315
 316         r = hdmi_runtime_get();
 317         BUG_ON(r);
 318
 319         r = hdmi4_read_edid(&hdmi.core,  buf, len);
 320
 321         hdmi_runtime_put();
 322         mutex_unlock(&hdmi.lock);
 323
 324         return r;
 325 }
 326
 327 static void hdmi_start_audio_stream(struct omap_hdmi *hd)
 328 {
 329         hdmi_wp_audio_enable(&hd->wp, true);
 330         hdmi4_audio_start(&hd->core, &hd->wp);
 331 }
 332
 333 static void hdmi_stop_audio_stream(struct omap_hdmi *hd)
 334 {
 335         hdmi4_audio_stop(&hd->core, &hd->wp);
 336         hdmi_wp_audio_enable(&hd->wp, false);
 337 }
 338
 339 static int hdmi_display_enable(struct omap_dss_device *dssdev)
 340 {
 341         struct omap_dss_device *out = &hdmi.output;
 342         unsigned long flags;
 343         int r = 0;
 344
 345         DSSDBG("ENTER hdmi_display_enable\n");
 346
 347         mutex_lock(&hdmi.lock);
 348
 349         if (!out->dispc_channel_connected) {
 350                 DSSERR("failed to enable display: no output/manager\n");
 351                 r = -ENODEV;
 352                 goto err0;
 353         }
 354
 355         r = hdmi_power_on_full(dssdev);
 356         if (r) {
 357                 DSSERR("failed to power on device\n");
 358                 goto err0;
 359         }
 360
 361         if (hdmi.audio_configured) {
 362                 r = hdmi4_audio_config(&hdmi.core, &hdmi.wp, &hdmi.audio_config,
 363                                        hdmi.cfg.timings.pixelclock);
 364                 if (r) {
 365                         DSSERR("Error restoring audio configuration: %d", r);
 366                         hdmi.audio_abort_cb(&hdmi.pdev->dev);
 367                         hdmi.audio_configured = false;
 368                 }
 369         }
 370
 371         spin_lock_irqsave(&hdmi.audio_playing_lock, flags);
 372         if (hdmi.audio_configured && hdmi.audio_playing)
 373                 hdmi_start_audio_stream(&hdmi);
 374         hdmi.display_enabled = true;
 375         spin_unlock_irqrestore(&hdmi.audio_playing_lock, flags);
 376
 377         mutex_unlock(&hdmi.lock);
 378         return 0;
 379
 380 err0:
 381         mutex_unlock(&hdmi.lock);
 382         return r;
 383 }
 384
 385 static void hdmi_display_disable(struct omap_dss_device *dssdev)
 386 {
 387         unsigned long flags;
 388
 389         DSSDBG("Enter hdmi_display_disable\n");
 390
 391         mutex_lock(&hdmi.lock);
 392
 393         spin_lock_irqsave(&hdmi.audio_playing_lock, flags);
 394         hdmi_stop_audio_stream(&hdmi);
 395         hdmi.display_enabled = false;
 396         spin_unlock_irqrestore(&hdmi.audio_playing_lock, flags);
 397
 398         hdmi_power_off_full(dssdev);
 399
 400         mutex_unlock(&hdmi.lock);
 401 }
 402
 403 static int hdmi_core_enable(struct omap_dss_device *dssdev)
 404 {
 405         int r = 0;
 406
 407         DSSDBG("ENTER omapdss_hdmi_core_enable\n");
 408
 409         mutex_lock(&hdmi.lock);
 410
 411         r = hdmi_power_on_core(dssdev);
 412         if (r) {
 413                 DSSERR("failed to power on device\n");
 414                 goto err0;
 415         }
 416
 417         mutex_unlock(&hdmi.lock);
 418         return 0;
 419
 420 err0:
 421         mutex_unlock(&hdmi.lock);
 422         return r;
 423 }
 424
 425 static void hdmi_core_disable(struct omap_dss_device *dssdev)
 426 {
 427         DSSDBG("Enter omapdss_hdmi_core_disable\n");
 428
 429         mutex_lock(&hdmi.lock);
 430
 431         hdmi_power_off_core(dssdev);
 432
 433         mutex_unlock(&hdmi.lock);
 434 }
 435
 436 static int hdmi_connect(struct omap_dss_device *dssdev,
 437                 struct omap_dss_device *dst)
 438 {
 439         enum omap_channel channel = dssdev->dispc_channel;
 440         int r;
 441
 442         r = hdmi_init_regulator();
 443         if (r)
 444                 return r;
 445
 446         r = dss_mgr_connect(channel, dssdev);
 447         if (r)
 448                 return r;
 449
 450         r = omapdss_output_set_device(dssdev, dst);
 451         if (r) {
 452                 DSSERR("failed to connect output to new device: %s\n",
 453                                 dst->name);
 454                 dss_mgr_disconnect(channel, dssdev);
 455                 return r;
 456         }
 457
 458         return 0;
 459 }
 460
 461 static void hdmi_disconnect(struct omap_dss_device *dssdev,
 462                 struct omap_dss_device *dst)
 463 {
 464         enum omap_channel channel = dssdev->dispc_channel;
 465
 466         WARN_ON(dst != dssdev->dst);
 467
 468         if (dst != dssdev->dst)
 469                 return;
 470
 471         omapdss_output_unset_device(dssdev);
 472
 473         dss_mgr_disconnect(channel, dssdev);
 474 }
 475
 476 static int hdmi_read_edid(struct omap_dss_device *dssdev,
 477                 u8 *edid, int len)
 478 {
 479         bool need_enable;
 480         int r;
 481
 482         need_enable = hdmi.core_enabled == false;
 483
 484         if (need_enable) {
 485                 r = hdmi_core_enable(dssdev);
 486                 if (r)
 487                         return r;
 488         }
 489
 490         r = read_edid(edid, len);
 491
 492         if (need_enable)
 493                 hdmi_core_disable(dssdev);
 494
 495         return r;
 496 }
 497
 498 static int hdmi_set_infoframe(struct omap_dss_device *dssdev,
 499                 const struct hdmi_avi_infoframe *avi)
 500 {
 501         hdmi.cfg.infoframe = *avi;
 502         return 0;
 503 }
 504
 505 static int hdmi_set_hdmi_mode(struct omap_dss_device *dssdev,
 506                 bool hdmi_mode)
 507 {
 508         hdmi.cfg.hdmi_dvi_mode = hdmi_mode ? HDMI_HDMI : HDMI_DVI;
 509         return 0;
 510 }
 511
 512 static const struct omapdss_hdmi_ops hdmi_ops = {
 513         .connect                = hdmi_connect,
 514         .disconnect             = hdmi_disconnect,
 515
 516         .enable                 = hdmi_display_enable,
 517         .disable                = hdmi_display_disable,
 518
 519         .check_timings          = hdmi_display_check_timing,
 520         .set_timings            = hdmi_display_set_timing,
 521         .get_timings            = hdmi_display_get_timings,
 522
 523         .read_edid              = hdmi_read_edid,
 524         .set_infoframe          = hdmi_set_infoframe,
 525         .set_hdmi_mode          = hdmi_set_hdmi_mode,
 526 };
 527
 528 static void hdmi_init_output(struct platform_device *pdev)
 529 {
 530         struct omap_dss_device *out = &hdmi.output;
 531
 532         out->dev = &pdev->dev;
 533         out->id = OMAP_DSS_OUTPUT_HDMI;
 534         out->output_type = OMAP_DISPLAY_TYPE_HDMI;
 535         out->name = "hdmi.0";
 536         out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT;
 537         out->ops.hdmi = &hdmi_ops;
 538         out->owner = THIS_MODULE;
 539
 540         omapdss_register_output(out);
 541 }
 542
 543 static void hdmi_uninit_output(struct platform_device *pdev)
 544 {
 545         struct omap_dss_device *out = &hdmi.output;
 546
 547         omapdss_unregister_output(out);
 548 }
 549
 550 static int hdmi_probe_of(struct platform_device *pdev)
 551 {
 552         struct device_node *node = pdev->dev.of_node;
 553         struct device_node *ep;
 554         int r;
 555
 556         ep = omapdss_of_get_first_endpoint(node);
 557         if (!ep)
 558                 return 0;
 559
 560         r = hdmi_parse_lanes_of(pdev, ep, &hdmi.phy);
 561         if (r)
 562                 goto err;
 563
 564         of_node_put(ep);
 565         return 0;
 566
 567 err:
 568         of_node_put(ep);
 569         return r;
 570 }
 571
 572 /* Audio callbacks */
 573 static int hdmi_audio_startup(struct device *dev,
 574                               void (*abort_cb)(struct device *dev))
 575 {
 576         struct omap_hdmi *hd = dev_get_drvdata(dev);
 577         int ret = 0;
 578
 579         mutex_lock(&hd->lock);
 580
 581         if (!hdmi_mode_has_audio(&hd->cfg) || !hd->display_enabled) {
 582                 ret = -EPERM;
 583                 goto out;
 584         }
 585
 586         hd->audio_abort_cb = abort_cb;
 587
 588 out:
 589         mutex_unlock(&hd->lock);
 590
 591         return ret;
 592 }
 593
 594 static int hdmi_audio_shutdown(struct device *dev)
 595 {
 596         struct omap_hdmi *hd = dev_get_drvdata(dev);
 597
 598         mutex_lock(&hd->lock);
 599         hd->audio_abort_cb = NULL;
 600         hd->audio_configured = false;
 601         hd->audio_playing = false;
 602         mutex_unlock(&hd->lock);
 603
 604         return 0;
 605 }
 606
 607 static int hdmi_audio_start(struct device *dev)
 608 {
 609         struct omap_hdmi *hd = dev_get_drvdata(dev);
 610         unsigned long flags;
 611
 612         WARN_ON(!hdmi_mode_has_audio(&hd->cfg));
 613
 614         spin_lock_irqsave(&hd->audio_playing_lock, flags);
 615
 616         if (hd->display_enabled)
 617                 hdmi_start_audio_stream(hd);
 618         hd->audio_playing = true;
 619
 620         spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
 621         return 0;
 622 }
 623
 624 static void hdmi_audio_stop(struct device *dev)
 625 {
 626         struct omap_hdmi *hd = dev_get_drvdata(dev);
 627         unsigned long flags;
 628
 629         WARN_ON(!hdmi_mode_has_audio(&hd->cfg));
 630
 631         spin_lock_irqsave(&hd->audio_playing_lock, flags);
 632
 633         if (hd->display_enabled)
 634                 hdmi_stop_audio_stream(hd);
 635         hd->audio_playing = false;
 636
 637         spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
 638 }
 639
 640 static int hdmi_audio_config(struct device *dev,
 641                              struct omap_dss_audio *dss_audio)
 642 {
 643         struct omap_hdmi *hd = dev_get_drvdata(dev);
 644         int ret;
 645
 646         mutex_lock(&hd->lock);
 647
 648         if (!hdmi_mode_has_audio(&hd->cfg) || !hd->display_enabled) {
 649                 ret = -EPERM;
 650                 goto out;
 651         }
 652
 653         ret = hdmi4_audio_config(&hd->core, &hd->wp, dss_audio,
 654                                  hd->cfg.timings.pixelclock);
 655         if (!ret) {
 656                 hd->audio_configured = true;
 657                 hd->audio_config = *dss_audio;
 658         }
 659 out:
 660         mutex_unlock(&hd->lock);
 661
 662         return ret;
 663 }
 664
 665 static const struct omap_hdmi_audio_ops hdmi_audio_ops = {
 666         .audio_startup = hdmi_audio_startup,
 667         .audio_shutdown = hdmi_audio_shutdown,
 668         .audio_start = hdmi_audio_start,
 669         .audio_stop = hdmi_audio_stop,
 670         .audio_config = hdmi_audio_config,
 671 };
 672
 673 static int hdmi_audio_register(struct device *dev)
 674 {
 675         struct omap_hdmi_audio_pdata pdata = {
 676                 .dev = dev,
 677                 .dss_version = omapdss_get_version(),
 678                 .audio_dma_addr = hdmi_wp_get_audio_dma_addr(&hdmi.wp),
 679                 .ops = &hdmi_audio_ops,
 680         };
 681
 682         hdmi.audio_pdev = platform_device_register_data(
 683                 dev, "omap-hdmi-audio", PLATFORM_DEVID_AUTO,
 684                 &pdata, sizeof(pdata));
 685
 686         if (IS_ERR(hdmi.audio_pdev))
 687                 return PTR_ERR(hdmi.audio_pdev);
 688
 689         return 0;
 690 }
 691
 692 /* HDMI HW IP initialisation */
 693 static int hdmi4_bind(struct device *dev, struct device *master, void *data)
 694 {
 695         struct platform_device *pdev = to_platform_device(dev);
 696         int r;
 697         int irq;
 698
 699         hdmi.pdev = pdev;
 700         dev_set_drvdata(&pdev->dev, &hdmi);
 701
 702         mutex_init(&hdmi.lock);
 703         spin_lock_init(&hdmi.audio_playing_lock);
 704
 705         if (pdev->dev.of_node) {
 706                 r = hdmi_probe_of(pdev);
 707                 if (r)
 708                         return r;
 709         }
 710
 711         r = hdmi_wp_init(pdev, &hdmi.wp);
 712         if (r)
 713                 return r;
 714
 715         r = hdmi_pll_init(pdev, &hdmi.pll, &hdmi.wp);
 716         if (r)
 717                 return r;
 718
 719         r = hdmi_phy_init(pdev, &hdmi.phy);
 720         if (r)
 721                 goto err;
 722
 723         r = hdmi4_core_init(pdev, &hdmi.core);
 724         if (r)
 725                 goto err;
 726
 727         irq = platform_get_irq(pdev, 0);
 728         if (irq < 0) {
 729                 DSSERR("platform_get_irq failed\n");
 730                 r = -ENODEV;
 731                 goto err;
 732         }
 733
 734         r = devm_request_threaded_irq(&pdev->dev, irq,
 735                         NULL, hdmi_irq_handler,
 736                         IRQF_ONESHOT, "OMAP HDMI", &hdmi.wp);
 737         if (r) {
 738                 DSSERR("HDMI IRQ request failed\n");
 739                 goto err;
 740         }
 741
 742         pm_runtime_enable(&pdev->dev);
 743
 744         hdmi_init_output(pdev);
 745
 746         r = hdmi_audio_register(&pdev->dev);
 747         if (r) {
 748                 DSSERR("Registering HDMI audio failed\n");
 749                 hdmi_uninit_output(pdev);
 750                 pm_runtime_disable(&pdev->dev);
 751                 return r;
 752         }
 753
 754         dss_debugfs_create_file("hdmi", hdmi_dump_regs);
 755
 756         return 0;
 757 err:
 758         hdmi_pll_uninit(&hdmi.pll);
 759         return r;
 760 }
 761
 762 static void hdmi4_unbind(struct device *dev, struct device *master, void *data)
 763 {
 764         struct platform_device *pdev = to_platform_device(dev);
 765
 766         if (hdmi.audio_pdev)
 767                 platform_device_unregister(hdmi.audio_pdev);
 768
 769         hdmi_uninit_output(pdev);
 770
 771         hdmi_pll_uninit(&hdmi.pll);
 772
 773         pm_runtime_disable(&pdev->dev);
 774 }
 775
 776 static const struct component_ops hdmi4_component_ops = {
 777         .bind   = hdmi4_bind,
 778         .unbind = hdmi4_unbind,
 779 };
 780
 781 static int hdmi4_probe(struct platform_device *pdev)
 782 {
 783         return component_add(&pdev->dev, &hdmi4_component_ops);
 784 }
 785
 786 static int hdmi4_remove(struct platform_device *pdev)
 787 {
 788         component_del(&pdev->dev, &hdmi4_component_ops);
 789         return 0;
 790 }
 791
 792 static int hdmi_runtime_suspend(struct device *dev)
 793 {
 794         dispc_runtime_put();
 795
 796         return 0;
 797 }
 798
 799 static int hdmi_runtime_resume(struct device *dev)
 800 {
 801         int r;
 802
 803         r = dispc_runtime_get();
 804         if (r < 0)
 805                 return r;
 806
 807         return 0;
 808 }
 809
 810 static const struct dev_pm_ops hdmi_pm_ops = {
 811         .runtime_suspend = hdmi_runtime_suspend,
 812         .runtime_resume = hdmi_runtime_resume,
 813 };
 814
 815 static const struct of_device_id hdmi_of_match[] = {
 816         { .compatible = "ti,omap4-hdmi", },
 817         {},
 818 };
 819
 820 static struct platform_driver omapdss_hdmihw_driver = {
 821         .probe          = hdmi4_probe,
 822         .remove         = hdmi4_remove,
 823         .driver         = {
 824                 .name   = "omapdss_hdmi",
 825                 .pm     = &hdmi_pm_ops,
 826                 .of_match_table = hdmi_of_match,
 827                 .suppress_bind_attrs = true,
 828         },
 829 };
 830
 831 int __init hdmi4_init_platform_driver(void)
 832 {
 833         return platform_driver_register(&omapdss_hdmihw_driver);
 834 }
 835
 836 void hdmi4_uninit_platform_driver(void)
 837 {
 838         platform_driver_unregister(&omapdss_hdmihw_driver);
 839 }