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 <[email protected]>
   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         /* DSS_HDMI_TCLK is bitclk / 10 */
 190         pc *= 10;
 191
 192         dss_pll_calc_b(&hdmi.pll.pll, clk_get_rate(hdmi.pll.pll.clkin),
 193                 pc, &hdmi_cinfo);
 194
 195         r = dss_pll_enable(&hdmi.pll.pll);
 196         if (r) {
 197                 DSSERR("Failed to enable PLL\n");
 198                 goto err_pll_enable;
 199         }
 200
 201         r = dss_pll_set_config(&hdmi.pll.pll, &hdmi_cinfo);
 202         if (r) {
 203                 DSSERR("Failed to configure PLL\n");
 204                 goto err_pll_cfg;
 205         }
 206
 207         r = hdmi_phy_configure(&hdmi.phy, hdmi_cinfo.clkdco,
 208                 hdmi_cinfo.clkout[0]);
 209         if (r) {
 210                 DSSDBG("Failed to configure PHY\n");
 211                 goto err_phy_cfg;
 212         }
 213
 214         r = hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
 215         if (r)
 216                 goto err_phy_pwr;
 217
 218         hdmi4_configure(&hdmi.core, &hdmi.wp, &hdmi.cfg);
 219
 220         /* bypass TV gamma table */
 221         dispc_enable_gamma_table(0);
 222
 223         /* tv size */
 224         dss_mgr_set_timings(channel, p);
 225
 226         r = dss_mgr_enable(channel);
 227         if (r)
 228                 goto err_mgr_enable;
 229
 230         r = hdmi_wp_video_start(&hdmi.wp);
 231         if (r)
 232                 goto err_vid_enable;
 233
 234         hdmi_wp_set_irqenable(wp,
 235                 HDMI_IRQ_LINK_CONNECT | HDMI_IRQ_LINK_DISCONNECT);
 236
 237         return 0;
 238
 239 err_vid_enable:
 240         dss_mgr_disable(channel);
 241 err_mgr_enable:
 242         hdmi_wp_set_phy_pwr(&hdmi.wp, HDMI_PHYPWRCMD_OFF);
 243 err_phy_pwr:
 244 err_phy_cfg:
 245 err_pll_cfg:
 246         dss_pll_disable(&hdmi.pll.pll);
 247 err_pll_enable:
 248         hdmi_power_off_core(dssdev);
 249         return -EIO;
 250 }
 251
 252 static void hdmi_power_off_full(struct omap_dss_device *dssdev)
 253 {
 254         enum omap_channel channel = dssdev->dispc_channel;
 255
 256         hdmi_wp_clear_irqenable(&hdmi.wp, 0xffffffff);
 257
 258         hdmi_wp_video_stop(&hdmi.wp);
 259
 260         dss_mgr_disable(channel);
 261
 262         hdmi_wp_set_phy_pwr(&hdmi.wp, HDMI_PHYPWRCMD_OFF);
 263
 264         dss_pll_disable(&hdmi.pll.pll);
 265
 266         hdmi_power_off_core(dssdev);
 267 }
 268
 269 static int hdmi_display_check_timing(struct omap_dss_device *dssdev,
 270                                         struct omap_video_timings *timings)
 271 {
 272         if (!dispc_mgr_timings_ok(dssdev->dispc_channel, timings))
 273                 return -EINVAL;
 274
 275         return 0;
 276 }
 277
 278 static void hdmi_display_set_timing(struct omap_dss_device *dssdev,
 279                 struct omap_video_timings *timings)
 280 {
 281         mutex_lock(&hdmi.lock);
 282
 283         hdmi.cfg.timings = *timings;
 284
 285         dispc_set_tv_pclk(timings->pixelclock);
 286
 287         mutex_unlock(&hdmi.lock);
 288 }
 289
 290 static void hdmi_display_get_timings(struct omap_dss_device *dssdev,
 291                 struct omap_video_timings *timings)
 292 {
 293         *timings = hdmi.cfg.timings;
 294 }
 295
 296 static void hdmi_dump_regs(struct seq_file *s)
 297 {
 298         mutex_lock(&hdmi.lock);
 299
 300         if (hdmi_runtime_get()) {
 301                 mutex_unlock(&hdmi.lock);
 302                 return;
 303         }
 304
 305         hdmi_wp_dump(&hdmi.wp, s);
 306         hdmi_pll_dump(&hdmi.pll, s);
 307         hdmi_phy_dump(&hdmi.phy, s);
 308         hdmi4_core_dump(&hdmi.core, s);
 309
 310         hdmi_runtime_put();
 311         mutex_unlock(&hdmi.lock);
 312 }
 313
 314 static int read_edid(u8 *buf, int len)
 315 {
 316         int r;
 317
 318         mutex_lock(&hdmi.lock);
 319
 320         r = hdmi_runtime_get();
 321         BUG_ON(r);
 322
 323         r = hdmi4_read_edid(&hdmi.core,  buf, len);
 324
 325         hdmi_runtime_put();
 326         mutex_unlock(&hdmi.lock);
 327
 328         return r;
 329 }
 330
 331 static void hdmi_start_audio_stream(struct omap_hdmi *hd)
 332 {
 333         hdmi_wp_audio_enable(&hd->wp, true);
 334         hdmi4_audio_start(&hd->core, &hd->wp);
 335 }
 336
 337 static void hdmi_stop_audio_stream(struct omap_hdmi *hd)
 338 {
 339         hdmi4_audio_stop(&hd->core, &hd->wp);
 340         hdmi_wp_audio_enable(&hd->wp, false);
 341 }
 342
 343 static int hdmi_display_enable(struct omap_dss_device *dssdev)
 344 {
 345         struct omap_dss_device *out = &hdmi.output;
 346         unsigned long flags;
 347         int r = 0;
 348
 349         DSSDBG("ENTER hdmi_display_enable\n");
 350
 351         mutex_lock(&hdmi.lock);
 352
 353         if (!out->dispc_channel_connected) {
 354                 DSSERR("failed to enable display: no output/manager\n");
 355                 r = -ENODEV;
 356                 goto err0;
 357         }
 358
 359         r = hdmi_power_on_full(dssdev);
 360         if (r) {
 361                 DSSERR("failed to power on device\n");
 362                 goto err0;
 363         }
 364
 365         if (hdmi.audio_configured) {
 366                 r = hdmi4_audio_config(&hdmi.core, &hdmi.wp, &hdmi.audio_config,
 367                                        hdmi.cfg.timings.pixelclock);
 368                 if (r) {
 369                         DSSERR("Error restoring audio configuration: %d", r);
 370                         hdmi.audio_abort_cb(&hdmi.pdev->dev);
 371                         hdmi.audio_configured = false;
 372                 }
 373         }
 374
 375         spin_lock_irqsave(&hdmi.audio_playing_lock, flags);
 376         if (hdmi.audio_configured && hdmi.audio_playing)
 377                 hdmi_start_audio_stream(&hdmi);
 378         hdmi.display_enabled = true;
 379         spin_unlock_irqrestore(&hdmi.audio_playing_lock, flags);
 380
 381         mutex_unlock(&hdmi.lock);
 382         return 0;
 383
 384 err0:
 385         mutex_unlock(&hdmi.lock);
 386         return r;
 387 }
 388
 389 static void hdmi_display_disable(struct omap_dss_device *dssdev)
 390 {
 391         unsigned long flags;
 392
 393         DSSDBG("Enter hdmi_display_disable\n");
 394
 395         mutex_lock(&hdmi.lock);
 396
 397         spin_lock_irqsave(&hdmi.audio_playing_lock, flags);
 398         hdmi_stop_audio_stream(&hdmi);
 399         hdmi.display_enabled = false;
 400         spin_unlock_irqrestore(&hdmi.audio_playing_lock, flags);
 401
 402         hdmi_power_off_full(dssdev);
 403
 404         mutex_unlock(&hdmi.lock);
 405 }
 406
 407 static int hdmi_core_enable(struct omap_dss_device *dssdev)
 408 {
 409         int r = 0;
 410
 411         DSSDBG("ENTER omapdss_hdmi_core_enable\n");
 412
 413         mutex_lock(&hdmi.lock);
 414
 415         r = hdmi_power_on_core(dssdev);
 416         if (r) {
 417                 DSSERR("failed to power on device\n");
 418                 goto err0;
 419         }
 420
 421         mutex_unlock(&hdmi.lock);
 422         return 0;
 423
 424 err0:
 425         mutex_unlock(&hdmi.lock);
 426         return r;
 427 }
 428
 429 static void hdmi_core_disable(struct omap_dss_device *dssdev)
 430 {
 431         DSSDBG("Enter omapdss_hdmi_core_disable\n");
 432
 433         mutex_lock(&hdmi.lock);
 434
 435         hdmi_power_off_core(dssdev);
 436
 437         mutex_unlock(&hdmi.lock);
 438 }
 439
 440 static int hdmi_connect(struct omap_dss_device *dssdev,
 441                 struct omap_dss_device *dst)
 442 {
 443         enum omap_channel channel = dssdev->dispc_channel;
 444         int r;
 445
 446         r = hdmi_init_regulator();
 447         if (r)
 448                 return r;
 449
 450         r = dss_mgr_connect(channel, dssdev);
 451         if (r)
 452                 return r;
 453
 454         r = omapdss_output_set_device(dssdev, dst);
 455         if (r) {
 456                 DSSERR("failed to connect output to new device: %s\n",
 457                                 dst->name);
 458                 dss_mgr_disconnect(channel, dssdev);
 459                 return r;
 460         }
 461
 462         return 0;
 463 }
 464
 465 static void hdmi_disconnect(struct omap_dss_device *dssdev,
 466                 struct omap_dss_device *dst)
 467 {
 468         enum omap_channel channel = dssdev->dispc_channel;
 469
 470         WARN_ON(dst != dssdev->dst);
 471
 472         if (dst != dssdev->dst)
 473                 return;
 474
 475         omapdss_output_unset_device(dssdev);
 476
 477         dss_mgr_disconnect(channel, dssdev);
 478 }
 479
 480 static int hdmi_read_edid(struct omap_dss_device *dssdev,
 481                 u8 *edid, int len)
 482 {
 483         bool need_enable;
 484         int r;
 485
 486         need_enable = hdmi.core_enabled == false;
 487
 488         if (need_enable) {
 489                 r = hdmi_core_enable(dssdev);
 490                 if (r)
 491                         return r;
 492         }
 493
 494         r = read_edid(edid, len);
 495
 496         if (need_enable)
 497                 hdmi_core_disable(dssdev);
 498
 499         return r;
 500 }
 501
 502 static int hdmi_set_infoframe(struct omap_dss_device *dssdev,
 503                 const struct hdmi_avi_infoframe *avi)
 504 {
 505         hdmi.cfg.infoframe = *avi;
 506         return 0;
 507 }
 508
 509 static int hdmi_set_hdmi_mode(struct omap_dss_device *dssdev,
 510                 bool hdmi_mode)
 511 {
 512         hdmi.cfg.hdmi_dvi_mode = hdmi_mode ? HDMI_HDMI : HDMI_DVI;
 513         return 0;
 514 }
 515
 516 static const struct omapdss_hdmi_ops hdmi_ops = {
 517         .connect                = hdmi_connect,
 518         .disconnect             = hdmi_disconnect,
 519
 520         .enable                 = hdmi_display_enable,
 521         .disable                = hdmi_display_disable,
 522
 523         .check_timings          = hdmi_display_check_timing,
 524         .set_timings            = hdmi_display_set_timing,
 525         .get_timings            = hdmi_display_get_timings,
 526
 527         .read_edid              = hdmi_read_edid,
 528         .set_infoframe          = hdmi_set_infoframe,
 529         .set_hdmi_mode          = hdmi_set_hdmi_mode,
 530 };
 531
 532 static void hdmi_init_output(struct platform_device *pdev)
 533 {
 534         struct omap_dss_device *out = &hdmi.output;
 535
 536         out->dev = &pdev->dev;
 537         out->id = OMAP_DSS_OUTPUT_HDMI;
 538         out->output_type = OMAP_DISPLAY_TYPE_HDMI;
 539         out->name = "hdmi.0";
 540         out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT;
 541         out->ops.hdmi = &hdmi_ops;
 542         out->owner = THIS_MODULE;
 543
 544         omapdss_register_output(out);
 545 }
 546
 547 static void hdmi_uninit_output(struct platform_device *pdev)
 548 {
 549         struct omap_dss_device *out = &hdmi.output;
 550
 551         omapdss_unregister_output(out);
 552 }
 553
 554 static int hdmi_probe_of(struct platform_device *pdev)
 555 {
 556         struct device_node *node = pdev->dev.of_node;
 557         struct device_node *ep;
 558         int r;
 559
 560         ep = omapdss_of_get_first_endpoint(node);
 561         if (!ep)
 562                 return 0;
 563
 564         r = hdmi_parse_lanes_of(pdev, ep, &hdmi.phy);
 565         if (r)
 566                 goto err;
 567
 568         of_node_put(ep);
 569         return 0;
 570
 571 err:
 572         of_node_put(ep);
 573         return r;
 574 }
 575
 576 /* Audio callbacks */
 577 static int hdmi_audio_startup(struct device *dev,
 578                               void (*abort_cb)(struct device *dev))
 579 {
 580         struct omap_hdmi *hd = dev_get_drvdata(dev);
 581         int ret = 0;
 582
 583         mutex_lock(&hd->lock);
 584
 585         if (!hdmi_mode_has_audio(&hd->cfg) || !hd->display_enabled) {
 586                 ret = -EPERM;
 587                 goto out;
 588         }
 589
 590         hd->audio_abort_cb = abort_cb;
 591
 592 out:
 593         mutex_unlock(&hd->lock);
 594
 595         return ret;
 596 }
 597
 598 static int hdmi_audio_shutdown(struct device *dev)
 599 {
 600         struct omap_hdmi *hd = dev_get_drvdata(dev);
 601
 602         mutex_lock(&hd->lock);
 603         hd->audio_abort_cb = NULL;
 604         hd->audio_configured = false;
 605         hd->audio_playing = false;
 606         mutex_unlock(&hd->lock);
 607
 608         return 0;
 609 }
 610
 611 static int hdmi_audio_start(struct device *dev)
 612 {
 613         struct omap_hdmi *hd = dev_get_drvdata(dev);
 614         unsigned long flags;
 615
 616         WARN_ON(!hdmi_mode_has_audio(&hd->cfg));
 617
 618         spin_lock_irqsave(&hd->audio_playing_lock, flags);
 619
 620         if (hd->display_enabled)
 621                 hdmi_start_audio_stream(hd);
 622         hd->audio_playing = true;
 623
 624         spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
 625         return 0;
 626 }
 627
 628 static void hdmi_audio_stop(struct device *dev)
 629 {
 630         struct omap_hdmi *hd = dev_get_drvdata(dev);
 631         unsigned long flags;
 632
 633         WARN_ON(!hdmi_mode_has_audio(&hd->cfg));
 634
 635         spin_lock_irqsave(&hd->audio_playing_lock, flags);
 636
 637         if (hd->display_enabled)
 638                 hdmi_stop_audio_stream(hd);
 639         hd->audio_playing = false;
 640
 641         spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
 642 }
 643
 644 static int hdmi_audio_config(struct device *dev,
 645                              struct omap_dss_audio *dss_audio)
 646 {
 647         struct omap_hdmi *hd = dev_get_drvdata(dev);
 648         int ret;
 649
 650         mutex_lock(&hd->lock);
 651
 652         if (!hdmi_mode_has_audio(&hd->cfg) || !hd->display_enabled) {
 653                 ret = -EPERM;
 654                 goto out;
 655         }
 656
 657         ret = hdmi4_audio_config(&hd->core, &hd->wp, dss_audio,
 658                                  hd->cfg.timings.pixelclock);
 659         if (!ret) {
 660                 hd->audio_configured = true;
 661                 hd->audio_config = *dss_audio;
 662         }
 663 out:
 664         mutex_unlock(&hd->lock);
 665
 666         return ret;
 667 }
 668
 669 static const struct omap_hdmi_audio_ops hdmi_audio_ops = {
 670         .audio_startup = hdmi_audio_startup,
 671         .audio_shutdown = hdmi_audio_shutdown,
 672         .audio_start = hdmi_audio_start,
 673         .audio_stop = hdmi_audio_stop,
 674         .audio_config = hdmi_audio_config,
 675 };
 676
 677 static int hdmi_audio_register(struct device *dev)
 678 {
 679         struct omap_hdmi_audio_pdata pdata = {
 680                 .dev = dev,
 681                 .dss_version = omapdss_get_version(),
 682                 .audio_dma_addr = hdmi_wp_get_audio_dma_addr(&hdmi.wp),
 683                 .ops = &hdmi_audio_ops,
 684         };
 685
 686         hdmi.audio_pdev = platform_device_register_data(
 687                 dev, "omap-hdmi-audio", PLATFORM_DEVID_AUTO,
 688                 &pdata, sizeof(pdata));
 689
 690         if (IS_ERR(hdmi.audio_pdev))
 691                 return PTR_ERR(hdmi.audio_pdev);
 692
 693         return 0;
 694 }
 695
 696 /* HDMI HW IP initialisation */
 697 static int hdmi4_bind(struct device *dev, struct device *master, void *data)
 698 {
 699         struct platform_device *pdev = to_platform_device(dev);
 700         int r;
 701         int irq;
 702
 703         hdmi.pdev = pdev;
 704         dev_set_drvdata(&pdev->dev, &hdmi);
 705
 706         mutex_init(&hdmi.lock);
 707         spin_lock_init(&hdmi.audio_playing_lock);
 708
 709         if (pdev->dev.of_node) {
 710                 r = hdmi_probe_of(pdev);
 711                 if (r)
 712                         return r;
 713         }
 714
 715         r = hdmi_wp_init(pdev, &hdmi.wp);
 716         if (r)
 717                 return r;
 718
 719         r = hdmi_pll_init(pdev, &hdmi.pll, &hdmi.wp);
 720         if (r)
 721                 return r;
 722
 723         r = hdmi_phy_init(pdev, &hdmi.phy);
 724         if (r)
 725                 goto err;
 726
 727         r = hdmi4_core_init(pdev, &hdmi.core);
 728         if (r)
 729                 goto err;
 730
 731         irq = platform_get_irq(pdev, 0);
 732         if (irq < 0) {
 733                 DSSERR("platform_get_irq failed\n");
 734                 r = -ENODEV;
 735                 goto err;
 736         }
 737
 738         r = devm_request_threaded_irq(&pdev->dev, irq,
 739                         NULL, hdmi_irq_handler,
 740                         IRQF_ONESHOT, "OMAP HDMI", &hdmi.wp);
 741         if (r) {
 742                 DSSERR("HDMI IRQ request failed\n");
 743                 goto err;
 744         }
 745
 746         pm_runtime_enable(&pdev->dev);
 747
 748         hdmi_init_output(pdev);
 749
 750         r = hdmi_audio_register(&pdev->dev);
 751         if (r) {
 752                 DSSERR("Registering HDMI audio failed\n");
 753                 hdmi_uninit_output(pdev);
 754                 pm_runtime_disable(&pdev->dev);
 755                 return r;
 756         }
 757
 758         dss_debugfs_create_file("hdmi", hdmi_dump_regs);
 759
 760         return 0;
 761 err:
 762         hdmi_pll_uninit(&hdmi.pll);
 763         return r;
 764 }
 765
 766 static void hdmi4_unbind(struct device *dev, struct device *master, void *data)
 767 {
 768         struct platform_device *pdev = to_platform_device(dev);
 769
 770         if (hdmi.audio_pdev)
 771                 platform_device_unregister(hdmi.audio_pdev);
 772
 773         hdmi_uninit_output(pdev);
 774
 775         hdmi_pll_uninit(&hdmi.pll);
 776
 777         pm_runtime_disable(&pdev->dev);
 778 }
 779
 780 static const struct component_ops hdmi4_component_ops = {
 781         .bind   = hdmi4_bind,
 782         .unbind = hdmi4_unbind,
 783 };
 784
 785 static int hdmi4_probe(struct platform_device *pdev)
 786 {
 787         return component_add(&pdev->dev, &hdmi4_component_ops);
 788 }
 789
 790 static int hdmi4_remove(struct platform_device *pdev)
 791 {
 792         component_del(&pdev->dev, &hdmi4_component_ops);
 793         return 0;
 794 }
 795
 796 static int hdmi_runtime_suspend(struct device *dev)
 797 {
 798         dispc_runtime_put();
 799
 800         return 0;
 801 }
 802
 803 static int hdmi_runtime_resume(struct device *dev)
 804 {
 805         int r;
 806
 807         r = dispc_runtime_get();
 808         if (r < 0)
 809                 return r;
 810
 811         return 0;
 812 }
 813
 814 static const struct dev_pm_ops hdmi_pm_ops = {
 815         .runtime_suspend = hdmi_runtime_suspend,
 816         .runtime_resume = hdmi_runtime_resume,
 817 };
 818
 819 static const struct of_device_id hdmi_of_match[] = {
 820         { .compatible = "ti,omap4-hdmi", },
 821         {},
 822 };
 823
 824 static struct platform_driver omapdss_hdmihw_driver = {
 825         .probe          = hdmi4_probe,
 826         .remove         = hdmi4_remove,
 827         .driver         = {
 828                 .name   = "omapdss_hdmi",
 829                 .pm     = &hdmi_pm_ops,
 830                 .of_match_table = hdmi_of_match,
 831                 .suppress_bind_attrs = true,
 832         },
 833 };
 834
 835 int __init hdmi4_init_platform_driver(void)
 836 {
 837         return platform_driver_register(&omapdss_hdmihw_driver);
 838 }
 839
 840 void hdmi4_uninit_platform_driver(void)
 841 {
 842         platform_driver_unregister(&omapdss_hdmihw_driver);
 843 }