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