drivers/video/fbdev/omap2/omapfb/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/omapfb_dss.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         struct regulator *reg;
 104
 105         if (hdmi.vdda_reg != NULL)
 106                 return 0;
 107
 108         reg = devm_regulator_get(&hdmi.pdev->dev, "vdda");
 109
 110         if (IS_ERR(reg)) {
 111                 if (PTR_ERR(reg) != -EPROBE_DEFER)
 112                         DSSERR("can't get VDDA regulator\n");
 113                 return PTR_ERR(reg);
 114         }
 115
 116         hdmi.vdda_reg = reg;
 117
 118         return 0;
 119 }
 120
 121 static int hdmi_power_on_core(struct omap_dss_device *dssdev)
 122 {
 123         int r;
 124
 125         r = regulator_enable(hdmi.vdda_reg);
 126         if (r)
 127                 return r;
 128
 129         r = hdmi_runtime_get();
 130         if (r)
 131                 goto err_runtime_get;
 132
 133         /* Make selection of HDMI in DSS */
 134         dss_select_hdmi_venc_clk_source(DSS_HDMI_M_PCLK);
 135
 136         hdmi.core_enabled = true;
 137
 138         return 0;
 139
 140 err_runtime_get:
 141         regulator_disable(hdmi.vdda_reg);
 142
 143         return r;
 144 }
 145
 146 static void hdmi_power_off_core(struct omap_dss_device *dssdev)
 147 {
 148         hdmi.core_enabled = false;
 149
 150         hdmi_runtime_put();
 151         regulator_disable(hdmi.vdda_reg);
 152 }
 153
 154 static int hdmi_power_on_full(struct omap_dss_device *dssdev)
 155 {
 156         int r;
 157         struct omap_video_timings *p;
 158         struct omap_overlay_manager *mgr = hdmi.output.manager;
 159         struct hdmi_wp_data *wp = &hdmi.wp;
 160         struct dss_pll_clock_info hdmi_cinfo = { 0 };
 161
 162         r = hdmi_power_on_core(dssdev);
 163         if (r)
 164                 return r;
 165
 166         /* disable and clear irqs */
 167         hdmi_wp_clear_irqenable(wp, 0xffffffff);
 168         hdmi_wp_set_irqstatus(wp, 0xffffffff);
 169
 170         p = &hdmi.cfg.timings;
 171
 172         DSSDBG("hdmi_power_on x_res= %d y_res = %d\n", p->x_res, p->y_res);
 173
 174         hdmi_pll_compute(&hdmi.pll, p->pixelclock, &hdmi_cinfo);
 175
 176         r = dss_pll_enable(&hdmi.pll.pll);
 177         if (r) {
 178                 DSSERR("Failed to enable PLL\n");
 179                 goto err_pll_enable;
 180         }
 181
 182         r = dss_pll_set_config(&hdmi.pll.pll, &hdmi_cinfo);
 183         if (r) {
 184                 DSSERR("Failed to configure PLL\n");
 185                 goto err_pll_cfg;
 186         }
 187
 188         r = hdmi_phy_configure(&hdmi.phy, hdmi_cinfo.clkdco,
 189                 hdmi_cinfo.clkout[0]);
 190         if (r) {
 191                 DSSDBG("Failed to configure PHY\n");
 192                 goto err_phy_cfg;
 193         }
 194
 195         r = hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
 196         if (r)
 197                 goto err_phy_pwr;
 198
 199         hdmi4_configure(&hdmi.core, &hdmi.wp, &hdmi.cfg);
 200
 201         /* bypass TV gamma table */
 202         dispc_enable_gamma_table(0);
 203
 204         /* tv size */
 205         dss_mgr_set_timings(mgr, p);
 206
 207         r = hdmi_wp_video_start(&hdmi.wp);
 208         if (r)
 209                 goto err_vid_enable;
 210
 211         r = dss_mgr_enable(mgr);
 212         if (r)
 213                 goto err_mgr_enable;
 214
 215         hdmi_wp_set_irqenable(wp,
 216                 HDMI_IRQ_LINK_CONNECT | HDMI_IRQ_LINK_DISCONNECT);
 217
 218         return 0;
 219
 220 err_mgr_enable:
 221         hdmi_wp_video_stop(&hdmi.wp);
 222 err_vid_enable:
 223         hdmi_wp_set_phy_pwr(&hdmi.wp, HDMI_PHYPWRCMD_OFF);
 224 err_phy_pwr:
 225 err_phy_cfg:
 226 err_pll_cfg:
 227         dss_pll_disable(&hdmi.pll.pll);
 228 err_pll_enable:
 229         hdmi_power_off_core(dssdev);
 230         return -EIO;
 231 }
 232
 233 static void hdmi_power_off_full(struct omap_dss_device *dssdev)
 234 {
 235         struct omap_overlay_manager *mgr = hdmi.output.manager;
 236
 237         hdmi_wp_clear_irqenable(&hdmi.wp, 0xffffffff);
 238
 239         dss_mgr_disable(mgr);
 240
 241         hdmi_wp_video_stop(&hdmi.wp);
 242
 243         hdmi_wp_set_phy_pwr(&hdmi.wp, HDMI_PHYPWRCMD_OFF);
 244
 245         dss_pll_disable(&hdmi.pll.pll);
 246
 247         hdmi_power_off_core(dssdev);
 248 }
 249
 250 static int hdmi_display_check_timing(struct omap_dss_device *dssdev,
 251                                         struct omap_video_timings *timings)
 252 {
 253         struct omap_dss_device *out = &hdmi.output;
 254
 255         if (!dispc_mgr_timings_ok(out->dispc_channel, timings))
 256                 return -EINVAL;
 257
 258         return 0;
 259 }
 260
 261 static void hdmi_display_set_timing(struct omap_dss_device *dssdev,
 262                 struct omap_video_timings *timings)
 263 {
 264         mutex_lock(&hdmi.lock);
 265
 266         hdmi.cfg.timings = *timings;
 267
 268         dispc_set_tv_pclk(timings->pixelclock);
 269
 270         mutex_unlock(&hdmi.lock);
 271 }
 272
 273 static void hdmi_display_get_timings(struct omap_dss_device *dssdev,
 274                 struct omap_video_timings *timings)
 275 {
 276         *timings = hdmi.cfg.timings;
 277 }
 278
 279 static void hdmi_dump_regs(struct seq_file *s)
 280 {
 281         mutex_lock(&hdmi.lock);
 282
 283         if (hdmi_runtime_get()) {
 284                 mutex_unlock(&hdmi.lock);
 285                 return;
 286         }
 287
 288         hdmi_wp_dump(&hdmi.wp, s);
 289         hdmi_pll_dump(&hdmi.pll, s);
 290         hdmi_phy_dump(&hdmi.phy, s);
 291         hdmi4_core_dump(&hdmi.core, s);
 292
 293         hdmi_runtime_put();
 294         mutex_unlock(&hdmi.lock);
 295 }
 296
 297 static int read_edid(u8 *buf, int len)
 298 {
 299         int r;
 300
 301         mutex_lock(&hdmi.lock);
 302
 303         r = hdmi_runtime_get();
 304         BUG_ON(r);
 305
 306         r = hdmi4_read_edid(&hdmi.core,  buf, len);
 307
 308         hdmi_runtime_put();
 309         mutex_unlock(&hdmi.lock);
 310
 311         return r;
 312 }
 313
 314 static void hdmi_start_audio_stream(struct omap_hdmi *hd)
 315 {
 316         hdmi_wp_audio_enable(&hd->wp, true);
 317         hdmi4_audio_start(&hd->core, &hd->wp);
 318 }
 319
 320 static void hdmi_stop_audio_stream(struct omap_hdmi *hd)
 321 {
 322         hdmi4_audio_stop(&hd->core, &hd->wp);
 323         hdmi_wp_audio_enable(&hd->wp, false);
 324 }
 325
 326 static int hdmi_display_enable(struct omap_dss_device *dssdev)
 327 {
 328         struct omap_dss_device *out = &hdmi.output;
 329         unsigned long flags;
 330         int r = 0;
 331
 332         DSSDBG("ENTER hdmi_display_enable\n");
 333
 334         mutex_lock(&hdmi.lock);
 335
 336         if (out->manager == NULL) {
 337                 DSSERR("failed to enable display: no output/manager\n");
 338                 r = -ENODEV;
 339                 goto err0;
 340         }
 341
 342         r = hdmi_power_on_full(dssdev);
 343         if (r) {
 344                 DSSERR("failed to power on device\n");
 345                 goto err0;
 346         }
 347
 348         if (hdmi.audio_configured) {
 349                 r = hdmi4_audio_config(&hdmi.core, &hdmi.wp, &hdmi.audio_config,
 350                                        hdmi.cfg.timings.pixelclock);
 351                 if (r) {
 352                         DSSERR("Error restoring audio configuration: %d", r);
 353                         hdmi.audio_abort_cb(&hdmi.pdev->dev);
 354                         hdmi.audio_configured = false;
 355                 }
 356         }
 357
 358         spin_lock_irqsave(&hdmi.audio_playing_lock, flags);
 359         if (hdmi.audio_configured && hdmi.audio_playing)
 360                 hdmi_start_audio_stream(&hdmi);
 361         hdmi.display_enabled = true;
 362         spin_unlock_irqrestore(&hdmi.audio_playing_lock, flags);
 363
 364         mutex_unlock(&hdmi.lock);
 365         return 0;
 366
 367 err0:
 368         mutex_unlock(&hdmi.lock);
 369         return r;
 370 }
 371
 372 static void hdmi_display_disable(struct omap_dss_device *dssdev)
 373 {
 374         unsigned long flags;
 375
 376         DSSDBG("Enter hdmi_display_disable\n");
 377
 378         mutex_lock(&hdmi.lock);
 379
 380         spin_lock_irqsave(&hdmi.audio_playing_lock, flags);
 381         hdmi_stop_audio_stream(&hdmi);
 382         hdmi.display_enabled = false;
 383         spin_unlock_irqrestore(&hdmi.audio_playing_lock, flags);
 384
 385         hdmi_power_off_full(dssdev);
 386
 387         mutex_unlock(&hdmi.lock);
 388 }
 389
 390 static int hdmi_core_enable(struct omap_dss_device *dssdev)
 391 {
 392         int r = 0;
 393
 394         DSSDBG("ENTER omapdss_hdmi_core_enable\n");
 395
 396         mutex_lock(&hdmi.lock);
 397
 398         r = hdmi_power_on_core(dssdev);
 399         if (r) {
 400                 DSSERR("failed to power on device\n");
 401                 goto err0;
 402         }
 403
 404         mutex_unlock(&hdmi.lock);
 405         return 0;
 406
 407 err0:
 408         mutex_unlock(&hdmi.lock);
 409         return r;
 410 }
 411
 412 static void hdmi_core_disable(struct omap_dss_device *dssdev)
 413 {
 414         DSSDBG("Enter omapdss_hdmi_core_disable\n");
 415
 416         mutex_lock(&hdmi.lock);
 417
 418         hdmi_power_off_core(dssdev);
 419
 420         mutex_unlock(&hdmi.lock);
 421 }
 422
 423 static int hdmi_connect(struct omap_dss_device *dssdev,
 424                 struct omap_dss_device *dst)
 425 {
 426         struct omap_overlay_manager *mgr;
 427         int r;
 428
 429         r = hdmi_init_regulator();
 430         if (r)
 431                 return r;
 432
 433         mgr = omap_dss_get_overlay_manager(dssdev->dispc_channel);
 434         if (!mgr)
 435                 return -ENODEV;
 436
 437         r = dss_mgr_connect(mgr, 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(mgr, 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         WARN_ON(dst != dssdev->dst);
 456
 457         if (dst != dssdev->dst)
 458                 return;
 459
 460         omapdss_output_unset_device(dssdev);
 461
 462         if (dssdev->manager)
 463                 dss_mgr_disconnect(dssdev->manager, dssdev);
 464 }
 465
 466 static int hdmi_read_edid(struct omap_dss_device *dssdev,
 467                 u8 *edid, int len)
 468 {
 469         bool need_enable;
 470         int r;
 471
 472         need_enable = hdmi.core_enabled == false;
 473
 474         if (need_enable) {
 475                 r = hdmi_core_enable(dssdev);
 476                 if (r)
 477                         return r;
 478         }
 479
 480         r = read_edid(edid, len);
 481
 482         if (need_enable)
 483                 hdmi_core_disable(dssdev);
 484
 485         return r;
 486 }
 487
 488 static int hdmi_set_infoframe(struct omap_dss_device *dssdev,
 489                 const struct hdmi_avi_infoframe *avi)
 490 {
 491         hdmi.cfg.infoframe = *avi;
 492         return 0;
 493 }
 494
 495 static int hdmi_set_hdmi_mode(struct omap_dss_device *dssdev,
 496                 bool hdmi_mode)
 497 {
 498         hdmi.cfg.hdmi_dvi_mode = hdmi_mode ? HDMI_HDMI : HDMI_DVI;
 499         return 0;
 500 }
 501
 502 static const struct omapdss_hdmi_ops hdmi_ops = {
 503         .connect                = hdmi_connect,
 504         .disconnect             = hdmi_disconnect,
 505
 506         .enable                 = hdmi_display_enable,
 507         .disable                = hdmi_display_disable,
 508
 509         .check_timings          = hdmi_display_check_timing,
 510         .set_timings            = hdmi_display_set_timing,
 511         .get_timings            = hdmi_display_get_timings,
 512
 513         .read_edid              = hdmi_read_edid,
 514         .set_infoframe          = hdmi_set_infoframe,
 515         .set_hdmi_mode          = hdmi_set_hdmi_mode,
 516 };
 517
 518 static void hdmi_init_output(struct platform_device *pdev)
 519 {
 520         struct omap_dss_device *out = &hdmi.output;
 521
 522         out->dev = &pdev->dev;
 523         out->id = OMAP_DSS_OUTPUT_HDMI;
 524         out->output_type = OMAP_DISPLAY_TYPE_HDMI;
 525         out->name = "hdmi.0";
 526         out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT;
 527         out->ops.hdmi = &hdmi_ops;
 528         out->owner = THIS_MODULE;
 529
 530         omapdss_register_output(out);
 531 }
 532
 533 static void hdmi_uninit_output(struct platform_device *pdev)
 534 {
 535         struct omap_dss_device *out = &hdmi.output;
 536
 537         omapdss_unregister_output(out);
 538 }
 539
 540 static int hdmi_probe_of(struct platform_device *pdev)
 541 {
 542         struct device_node *node = pdev->dev.of_node;
 543         struct device_node *ep;
 544         int r;
 545
 546         ep = omapdss_of_get_first_endpoint(node);
 547         if (!ep)
 548                 return 0;
 549
 550         r = hdmi_parse_lanes_of(pdev, ep, &hdmi.phy);
 551         if (r)
 552                 goto err;
 553
 554         of_node_put(ep);
 555         return 0;
 556
 557 err:
 558         of_node_put(ep);
 559         return r;
 560 }
 561
 562 /* Audio callbacks */
 563 static int hdmi_audio_startup(struct device *dev,
 564                               void (*abort_cb)(struct device *dev))
 565 {
 566         struct omap_hdmi *hd = dev_get_drvdata(dev);
 567         int ret = 0;
 568
 569         mutex_lock(&hd->lock);
 570
 571         if (!hdmi_mode_has_audio(&hd->cfg) || !hd->display_enabled) {
 572                 ret = -EPERM;
 573                 goto out;
 574         }
 575
 576         hd->audio_abort_cb = abort_cb;
 577
 578 out:
 579         mutex_unlock(&hd->lock);
 580
 581         return ret;
 582 }
 583
 584 static int hdmi_audio_shutdown(struct device *dev)
 585 {
 586         struct omap_hdmi *hd = dev_get_drvdata(dev);
 587
 588         mutex_lock(&hd->lock);
 589         hd->audio_abort_cb = NULL;
 590         hd->audio_configured = false;
 591         hd->audio_playing = false;
 592         mutex_unlock(&hd->lock);
 593
 594         return 0;
 595 }
 596
 597 static int hdmi_audio_start(struct device *dev)
 598 {
 599         struct omap_hdmi *hd = dev_get_drvdata(dev);
 600         unsigned long flags;
 601
 602         WARN_ON(!hdmi_mode_has_audio(&hd->cfg));
 603
 604         spin_lock_irqsave(&hd->audio_playing_lock, flags);
 605
 606         if (hd->display_enabled)
 607                 hdmi_start_audio_stream(hd);
 608         hd->audio_playing = true;
 609
 610         spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
 611         return 0;
 612 }
 613
 614 static void hdmi_audio_stop(struct device *dev)
 615 {
 616         struct omap_hdmi *hd = dev_get_drvdata(dev);
 617         unsigned long flags;
 618
 619         WARN_ON(!hdmi_mode_has_audio(&hd->cfg));
 620
 621         spin_lock_irqsave(&hd->audio_playing_lock, flags);
 622
 623         if (hd->display_enabled)
 624                 hdmi_stop_audio_stream(hd);
 625         hd->audio_playing = false;
 626
 627         spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
 628 }
 629
 630 static int hdmi_audio_config(struct device *dev,
 631                              struct omap_dss_audio *dss_audio)
 632 {
 633         struct omap_hdmi *hd = dev_get_drvdata(dev);
 634         int ret;
 635
 636         mutex_lock(&hd->lock);
 637
 638         if (!hdmi_mode_has_audio(&hd->cfg) || !hd->display_enabled) {
 639                 ret = -EPERM;
 640                 goto out;
 641         }
 642
 643         ret = hdmi4_audio_config(&hd->core, &hd->wp, dss_audio,
 644                                  hd->cfg.timings.pixelclock);
 645         if (!ret) {
 646                 hd->audio_configured = true;
 647                 hd->audio_config = *dss_audio;
 648         }
 649 out:
 650         mutex_unlock(&hd->lock);
 651
 652         return ret;
 653 }
 654
 655 static const struct omap_hdmi_audio_ops hdmi_audio_ops = {
 656         .audio_startup = hdmi_audio_startup,
 657         .audio_shutdown = hdmi_audio_shutdown,
 658         .audio_start = hdmi_audio_start,
 659         .audio_stop = hdmi_audio_stop,
 660         .audio_config = hdmi_audio_config,
 661 };
 662
 663 static int hdmi_audio_register(struct device *dev)
 664 {
 665         struct omap_hdmi_audio_pdata pdata = {
 666                 .dev = dev,
 667                 .version = 4,
 668                 .audio_dma_addr = hdmi_wp_get_audio_dma_addr(&hdmi.wp),
 669                 .ops = &hdmi_audio_ops,
 670         };
 671
 672         hdmi.audio_pdev = platform_device_register_data(
 673                 dev, "omap-hdmi-audio", PLATFORM_DEVID_AUTO,
 674                 &pdata, sizeof(pdata));
 675
 676         return PTR_ERR_OR_ZERO(hdmi.audio_pdev);
 677 }
 678
 679 /* HDMI HW IP initialisation */
 680 static int hdmi4_bind(struct device *dev, struct device *master, void *data)
 681 {
 682         struct platform_device *pdev = to_platform_device(dev);
 683         int r;
 684         int irq;
 685
 686         hdmi.pdev = pdev;
 687         dev_set_drvdata(&pdev->dev, &hdmi);
 688
 689         mutex_init(&hdmi.lock);
 690         spin_lock_init(&hdmi.audio_playing_lock);
 691
 692         if (pdev->dev.of_node) {
 693                 r = hdmi_probe_of(pdev);
 694                 if (r)
 695                         return r;
 696         }
 697
 698         r = hdmi_wp_init(pdev, &hdmi.wp);
 699         if (r)
 700                 return r;
 701
 702         r = hdmi_pll_init(pdev, &hdmi.pll, &hdmi.wp);
 703         if (r)
 704                 return r;
 705
 706         r = hdmi_phy_init(pdev, &hdmi.phy);
 707         if (r)
 708                 goto err;
 709
 710         r = hdmi4_core_init(pdev, &hdmi.core);
 711         if (r)
 712                 goto err;
 713
 714         irq = platform_get_irq(pdev, 0);
 715         if (irq < 0) {
 716                 DSSERR("platform_get_irq failed\n");
 717                 r = -ENODEV;
 718                 goto err;
 719         }
 720
 721         r = devm_request_threaded_irq(&pdev->dev, irq,
 722                         NULL, hdmi_irq_handler,
 723                         IRQF_ONESHOT, "OMAP HDMI", &hdmi.wp);
 724         if (r) {
 725                 DSSERR("HDMI IRQ request failed\n");
 726                 goto err;
 727         }
 728
 729         pm_runtime_enable(&pdev->dev);
 730
 731         hdmi_init_output(pdev);
 732
 733         r = hdmi_audio_register(&pdev->dev);
 734         if (r) {
 735                 DSSERR("Registering HDMI audio failed\n");
 736                 hdmi_uninit_output(pdev);
 737                 pm_runtime_disable(&pdev->dev);
 738                 return r;
 739         }
 740
 741         dss_debugfs_create_file("hdmi", hdmi_dump_regs);
 742
 743         return 0;
 744 err:
 745         hdmi_pll_uninit(&hdmi.pll);
 746         return r;
 747 }
 748
 749 static void hdmi4_unbind(struct device *dev, struct device *master, void *data)
 750 {
 751         struct platform_device *pdev = to_platform_device(dev);
 752
 753         if (hdmi.audio_pdev)
 754                 platform_device_unregister(hdmi.audio_pdev);
 755
 756         hdmi_uninit_output(pdev);
 757
 758         hdmi_pll_uninit(&hdmi.pll);
 759
 760         pm_runtime_disable(&pdev->dev);
 761 }
 762
 763 static const struct component_ops hdmi4_component_ops = {
 764         .bind   = hdmi4_bind,
 765         .unbind = hdmi4_unbind,
 766 };
 767
 768 static int hdmi4_probe(struct platform_device *pdev)
 769 {
 770         return component_add(&pdev->dev, &hdmi4_component_ops);
 771 }
 772
 773 static int hdmi4_remove(struct platform_device *pdev)
 774 {
 775         component_del(&pdev->dev, &hdmi4_component_ops);
 776         return 0;
 777 }
 778
 779 static int hdmi_runtime_suspend(struct device *dev)
 780 {
 781         dispc_runtime_put();
 782
 783         return 0;
 784 }
 785
 786 static int hdmi_runtime_resume(struct device *dev)
 787 {
 788         int r;
 789
 790         r = dispc_runtime_get();
 791         if (r < 0)
 792                 return r;
 793
 794         return 0;
 795 }
 796
 797 static const struct dev_pm_ops hdmi_pm_ops = {
 798         .runtime_suspend = hdmi_runtime_suspend,
 799         .runtime_resume = hdmi_runtime_resume,
 800 };
 801
 802 static const struct of_device_id hdmi_of_match[] = {
 803         { .compatible = "ti,omap4-hdmi", },
 804         {},
 805 };
 806
 807 static struct platform_driver omapdss_hdmihw_driver = {
 808         .probe          = hdmi4_probe,
 809         .remove         = hdmi4_remove,
 810         .driver         = {
 811                 .name   = "omapdss_hdmi",
 812                 .pm     = &hdmi_pm_ops,
 813                 .of_match_table = hdmi_of_match,
 814                 .suppress_bind_attrs = true,
 815         },
 816 };
 817
 818 int __init hdmi4_init_platform_driver(void)
 819 {
 820         return platform_driver_register(&omapdss_hdmihw_driver);
 821 }
 822
 823 void hdmi4_uninit_platform_driver(void)
 824 {
 825         platform_driver_unregister(&omapdss_hdmihw_driver);
 826 }