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         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         r = regulator_set_voltage(reg, 1800000, 1800000);
 118         if (r) {
 119                 devm_regulator_put(reg);
 120                 DSSWARN("can't set the regulator voltage\n");
 121                 return r;
 122         }
 123
 124         hdmi.vdda_reg = reg;
 125
 126         return 0;
 127 }
 128
 129 static int hdmi_power_on_core(struct omap_dss_device *dssdev)
 130 {
 131         int r;
 132
 133         r = regulator_enable(hdmi.vdda_reg);
 134         if (r)
 135                 return r;
 136
 137         r = hdmi_runtime_get();
 138         if (r)
 139                 goto err_runtime_get;
 140
 141         /* Make selection of HDMI in DSS */
 142         dss_select_hdmi_venc_clk_source(DSS_HDMI_M_PCLK);
 143
 144         hdmi.core_enabled = true;
 145
 146         return 0;
 147
 148 err_runtime_get:
 149         regulator_disable(hdmi.vdda_reg);
 150
 151         return r;
 152 }
 153
 154 static void hdmi_power_off_core(struct omap_dss_device *dssdev)
 155 {
 156         hdmi.core_enabled = false;
 157
 158         hdmi_runtime_put();
 159         regulator_disable(hdmi.vdda_reg);
 160 }
 161
 162 static int hdmi_power_on_full(struct omap_dss_device *dssdev)
 163 {
 164         int r;
 165         struct omap_video_timings *p;
 166         struct omap_overlay_manager *mgr = hdmi.output.manager;
 167         struct hdmi_wp_data *wp = &hdmi.wp;
 168         struct dss_pll_clock_info hdmi_cinfo = { 0 };
 169
 170         r = hdmi_power_on_core(dssdev);
 171         if (r)
 172                 return r;
 173
 174         /* disable and clear irqs */
 175         hdmi_wp_clear_irqenable(wp, 0xffffffff);
 176         hdmi_wp_set_irqstatus(wp, 0xffffffff);
 177
 178         p = &hdmi.cfg.timings;
 179
 180         DSSDBG("hdmi_power_on x_res= %d y_res = %d\n", p->x_res, p->y_res);
 181
 182         hdmi_pll_compute(&hdmi.pll, p->pixelclock, &hdmi_cinfo);
 183
 184         r = dss_pll_enable(&hdmi.pll.pll);
 185         if (r) {
 186                 DSSERR("Failed to enable PLL\n");
 187                 goto err_pll_enable;
 188         }
 189
 190         r = dss_pll_set_config(&hdmi.pll.pll, &hdmi_cinfo);
 191         if (r) {
 192                 DSSERR("Failed to configure PLL\n");
 193                 goto err_pll_cfg;
 194         }
 195
 196         r = hdmi_phy_configure(&hdmi.phy, hdmi_cinfo.clkdco,
 197                 hdmi_cinfo.clkout[0]);
 198         if (r) {
 199                 DSSDBG("Failed to configure PHY\n");
 200                 goto err_phy_cfg;
 201         }
 202
 203         r = hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
 204         if (r)
 205                 goto err_phy_pwr;
 206
 207         hdmi4_configure(&hdmi.core, &hdmi.wp, &hdmi.cfg);
 208
 209         /* bypass TV gamma table */
 210         dispc_enable_gamma_table(0);
 211
 212         /* tv size */
 213         dss_mgr_set_timings(mgr, p);
 214
 215         r = hdmi_wp_video_start(&hdmi.wp);
 216         if (r)
 217                 goto err_vid_enable;
 218
 219         r = dss_mgr_enable(mgr);
 220         if (r)
 221                 goto err_mgr_enable;
 222
 223         hdmi_wp_set_irqenable(wp,
 224                 HDMI_IRQ_LINK_CONNECT | HDMI_IRQ_LINK_DISCONNECT);
 225
 226         return 0;
 227
 228 err_mgr_enable:
 229         hdmi_wp_video_stop(&hdmi.wp);
 230 err_vid_enable:
 231         hdmi_wp_set_phy_pwr(&hdmi.wp, HDMI_PHYPWRCMD_OFF);
 232 err_phy_pwr:
 233 err_phy_cfg:
 234 err_pll_cfg:
 235         dss_pll_disable(&hdmi.pll.pll);
 236 err_pll_enable:
 237         hdmi_power_off_core(dssdev);
 238         return -EIO;
 239 }
 240
 241 static void hdmi_power_off_full(struct omap_dss_device *dssdev)
 242 {
 243         struct omap_overlay_manager *mgr = hdmi.output.manager;
 244
 245         hdmi_wp_clear_irqenable(&hdmi.wp, 0xffffffff);
 246
 247         dss_mgr_disable(mgr);
 248
 249         hdmi_wp_video_stop(&hdmi.wp);
 250
 251         hdmi_wp_set_phy_pwr(&hdmi.wp, HDMI_PHYPWRCMD_OFF);
 252
 253         dss_pll_disable(&hdmi.pll.pll);
 254
 255         hdmi_power_off_core(dssdev);
 256 }
 257
 258 static int hdmi_display_check_timing(struct omap_dss_device *dssdev,
 259                                         struct omap_video_timings *timings)
 260 {
 261         struct omap_dss_device *out = &hdmi.output;
 262
 263         if (!dispc_mgr_timings_ok(out->dispc_channel, timings))
 264                 return -EINVAL;
 265
 266         return 0;
 267 }
 268
 269 static void hdmi_display_set_timing(struct omap_dss_device *dssdev,
 270                 struct omap_video_timings *timings)
 271 {
 272         mutex_lock(&hdmi.lock);
 273
 274         hdmi.cfg.timings = *timings;
 275
 276         dispc_set_tv_pclk(timings->pixelclock);
 277
 278         mutex_unlock(&hdmi.lock);
 279 }
 280
 281 static void hdmi_display_get_timings(struct omap_dss_device *dssdev,
 282                 struct omap_video_timings *timings)
 283 {
 284         *timings = hdmi.cfg.timings;
 285 }
 286
 287 static void hdmi_dump_regs(struct seq_file *s)
 288 {
 289         mutex_lock(&hdmi.lock);
 290
 291         if (hdmi_runtime_get()) {
 292                 mutex_unlock(&hdmi.lock);
 293                 return;
 294         }
 295
 296         hdmi_wp_dump(&hdmi.wp, s);
 297         hdmi_pll_dump(&hdmi.pll, s);
 298         hdmi_phy_dump(&hdmi.phy, s);
 299         hdmi4_core_dump(&hdmi.core, s);
 300
 301         hdmi_runtime_put();
 302         mutex_unlock(&hdmi.lock);
 303 }
 304
 305 static int read_edid(u8 *buf, int len)
 306 {
 307         int r;
 308
 309         mutex_lock(&hdmi.lock);
 310
 311         r = hdmi_runtime_get();
 312         BUG_ON(r);
 313
 314         r = hdmi4_read_edid(&hdmi.core,  buf, len);
 315
 316         hdmi_runtime_put();
 317         mutex_unlock(&hdmi.lock);
 318
 319         return r;
 320 }
 321
 322 static void hdmi_start_audio_stream(struct omap_hdmi *hd)
 323 {
 324         hdmi_wp_audio_enable(&hd->wp, true);
 325         hdmi4_audio_start(&hd->core, &hd->wp);
 326 }
 327
 328 static void hdmi_stop_audio_stream(struct omap_hdmi *hd)
 329 {
 330         hdmi4_audio_stop(&hd->core, &hd->wp);
 331         hdmi_wp_audio_enable(&hd->wp, false);
 332 }
 333
 334 static int hdmi_display_enable(struct omap_dss_device *dssdev)
 335 {
 336         struct omap_dss_device *out = &hdmi.output;
 337         unsigned long flags;
 338         int r = 0;
 339
 340         DSSDBG("ENTER hdmi_display_enable\n");
 341
 342         mutex_lock(&hdmi.lock);
 343
 344         if (out->manager == NULL) {
 345                 DSSERR("failed to enable display: no output/manager\n");
 346                 r = -ENODEV;
 347                 goto err0;
 348         }
 349
 350         r = hdmi_power_on_full(dssdev);
 351         if (r) {
 352                 DSSERR("failed to power on device\n");
 353                 goto err0;
 354         }
 355
 356         if (hdmi.audio_configured) {
 357                 r = hdmi4_audio_config(&hdmi.core, &hdmi.wp, &hdmi.audio_config,
 358                                        hdmi.cfg.timings.pixelclock);
 359                 if (r) {
 360                         DSSERR("Error restoring audio configuration: %d", r);
 361                         hdmi.audio_abort_cb(&hdmi.pdev->dev);
 362                         hdmi.audio_configured = false;
 363                 }
 364         }
 365
 366         spin_lock_irqsave(&hdmi.audio_playing_lock, flags);
 367         if (hdmi.audio_configured && hdmi.audio_playing)
 368                 hdmi_start_audio_stream(&hdmi);
 369         hdmi.display_enabled = true;
 370         spin_unlock_irqrestore(&hdmi.audio_playing_lock, flags);
 371
 372         mutex_unlock(&hdmi.lock);
 373         return 0;
 374
 375 err0:
 376         mutex_unlock(&hdmi.lock);
 377         return r;
 378 }
 379
 380 static void hdmi_display_disable(struct omap_dss_device *dssdev)
 381 {
 382         unsigned long flags;
 383
 384         DSSDBG("Enter hdmi_display_disable\n");
 385
 386         mutex_lock(&hdmi.lock);
 387
 388         spin_lock_irqsave(&hdmi.audio_playing_lock, flags);
 389         hdmi_stop_audio_stream(&hdmi);
 390         hdmi.display_enabled = false;
 391         spin_unlock_irqrestore(&hdmi.audio_playing_lock, flags);
 392
 393         hdmi_power_off_full(dssdev);
 394
 395         mutex_unlock(&hdmi.lock);
 396 }
 397
 398 static int hdmi_core_enable(struct omap_dss_device *dssdev)
 399 {
 400         int r = 0;
 401
 402         DSSDBG("ENTER omapdss_hdmi_core_enable\n");
 403
 404         mutex_lock(&hdmi.lock);
 405
 406         r = hdmi_power_on_core(dssdev);
 407         if (r) {
 408                 DSSERR("failed to power on device\n");
 409                 goto err0;
 410         }
 411
 412         mutex_unlock(&hdmi.lock);
 413         return 0;
 414
 415 err0:
 416         mutex_unlock(&hdmi.lock);
 417         return r;
 418 }
 419
 420 static void hdmi_core_disable(struct omap_dss_device *dssdev)
 421 {
 422         DSSDBG("Enter omapdss_hdmi_core_disable\n");
 423
 424         mutex_lock(&hdmi.lock);
 425
 426         hdmi_power_off_core(dssdev);
 427
 428         mutex_unlock(&hdmi.lock);
 429 }
 430
 431 static int hdmi_connect(struct omap_dss_device *dssdev,
 432                 struct omap_dss_device *dst)
 433 {
 434         struct omap_overlay_manager *mgr;
 435         int r;
 436
 437         r = hdmi_init_regulator();
 438         if (r)
 439                 return r;
 440
 441         mgr = omap_dss_get_overlay_manager(dssdev->dispc_channel);
 442         if (!mgr)
 443                 return -ENODEV;
 444
 445         r = dss_mgr_connect(mgr, dssdev);
 446         if (r)
 447                 return r;
 448
 449         r = omapdss_output_set_device(dssdev, dst);
 450         if (r) {
 451                 DSSERR("failed to connect output to new device: %s\n",
 452                                 dst->name);
 453                 dss_mgr_disconnect(mgr, dssdev);
 454                 return r;
 455         }
 456
 457         return 0;
 458 }
 459
 460 static void hdmi_disconnect(struct omap_dss_device *dssdev,
 461                 struct omap_dss_device *dst)
 462 {
 463         WARN_ON(dst != dssdev->dst);
 464
 465         if (dst != dssdev->dst)
 466                 return;
 467
 468         omapdss_output_unset_device(dssdev);
 469
 470         if (dssdev->manager)
 471                 dss_mgr_disconnect(dssdev->manager, dssdev);
 472 }
 473
 474 static int hdmi_read_edid(struct omap_dss_device *dssdev,
 475                 u8 *edid, int len)
 476 {
 477         bool need_enable;
 478         int r;
 479
 480         need_enable = hdmi.core_enabled == false;
 481
 482         if (need_enable) {
 483                 r = hdmi_core_enable(dssdev);
 484                 if (r)
 485                         return r;
 486         }
 487
 488         r = read_edid(edid, len);
 489
 490         if (need_enable)
 491                 hdmi_core_disable(dssdev);
 492
 493         return r;
 494 }
 495
 496 static int hdmi_set_infoframe(struct omap_dss_device *dssdev,
 497                 const struct hdmi_avi_infoframe *avi)
 498 {
 499         hdmi.cfg.infoframe = *avi;
 500         return 0;
 501 }
 502
 503 static int hdmi_set_hdmi_mode(struct omap_dss_device *dssdev,
 504                 bool hdmi_mode)
 505 {
 506         hdmi.cfg.hdmi_dvi_mode = hdmi_mode ? HDMI_HDMI : HDMI_DVI;
 507         return 0;
 508 }
 509
 510 static const struct omapdss_hdmi_ops hdmi_ops = {
 511         .connect                = hdmi_connect,
 512         .disconnect             = hdmi_disconnect,
 513
 514         .enable                 = hdmi_display_enable,
 515         .disable                = hdmi_display_disable,
 516
 517         .check_timings          = hdmi_display_check_timing,
 518         .set_timings            = hdmi_display_set_timing,
 519         .get_timings            = hdmi_display_get_timings,
 520
 521         .read_edid              = hdmi_read_edid,
 522         .set_infoframe          = hdmi_set_infoframe,
 523         .set_hdmi_mode          = hdmi_set_hdmi_mode,
 524 };
 525
 526 static void hdmi_init_output(struct platform_device *pdev)
 527 {
 528         struct omap_dss_device *out = &hdmi.output;
 529
 530         out->dev = &pdev->dev;
 531         out->id = OMAP_DSS_OUTPUT_HDMI;
 532         out->output_type = OMAP_DISPLAY_TYPE_HDMI;
 533         out->name = "hdmi.0";
 534         out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT;
 535         out->ops.hdmi = &hdmi_ops;
 536         out->owner = THIS_MODULE;
 537
 538         omapdss_register_output(out);
 539 }
 540
 541 static void hdmi_uninit_output(struct platform_device *pdev)
 542 {
 543         struct omap_dss_device *out = &hdmi.output;
 544
 545         omapdss_unregister_output(out);
 546 }
 547
 548 static int hdmi_probe_of(struct platform_device *pdev)
 549 {
 550         struct device_node *node = pdev->dev.of_node;
 551         struct device_node *ep;
 552         int r;
 553
 554         ep = omapdss_of_get_first_endpoint(node);
 555         if (!ep)
 556                 return 0;
 557
 558         r = hdmi_parse_lanes_of(pdev, ep, &hdmi.phy);
 559         if (r)
 560                 goto err;
 561
 562         of_node_put(ep);
 563         return 0;
 564
 565 err:
 566         of_node_put(ep);
 567         return r;
 568 }
 569
 570 /* Audio callbacks */
 571 static int hdmi_audio_startup(struct device *dev,
 572                               void (*abort_cb)(struct device *dev))
 573 {
 574         struct omap_hdmi *hd = dev_get_drvdata(dev);
 575         int ret = 0;
 576
 577         mutex_lock(&hd->lock);
 578
 579         if (!hdmi_mode_has_audio(&hd->cfg) || !hd->display_enabled) {
 580                 ret = -EPERM;
 581                 goto out;
 582         }
 583
 584         hd->audio_abort_cb = abort_cb;
 585
 586 out:
 587         mutex_unlock(&hd->lock);
 588
 589         return ret;
 590 }
 591
 592 static int hdmi_audio_shutdown(struct device *dev)
 593 {
 594         struct omap_hdmi *hd = dev_get_drvdata(dev);
 595
 596         mutex_lock(&hd->lock);
 597         hd->audio_abort_cb = NULL;
 598         hd->audio_configured = false;
 599         hd->audio_playing = false;
 600         mutex_unlock(&hd->lock);
 601
 602         return 0;
 603 }
 604
 605 static int hdmi_audio_start(struct device *dev)
 606 {
 607         struct omap_hdmi *hd = dev_get_drvdata(dev);
 608         unsigned long flags;
 609
 610         WARN_ON(!hdmi_mode_has_audio(&hd->cfg));
 611
 612         spin_lock_irqsave(&hd->audio_playing_lock, flags);
 613
 614         if (hd->display_enabled)
 615                 hdmi_start_audio_stream(hd);
 616         hd->audio_playing = true;
 617
 618         spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
 619         return 0;
 620 }
 621
 622 static void hdmi_audio_stop(struct device *dev)
 623 {
 624         struct omap_hdmi *hd = dev_get_drvdata(dev);
 625         unsigned long flags;
 626
 627         WARN_ON(!hdmi_mode_has_audio(&hd->cfg));
 628
 629         spin_lock_irqsave(&hd->audio_playing_lock, flags);
 630
 631         if (hd->display_enabled)
 632                 hdmi_stop_audio_stream(hd);
 633         hd->audio_playing = false;
 634
 635         spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
 636 }
 637
 638 static int hdmi_audio_config(struct device *dev,
 639                              struct omap_dss_audio *dss_audio)
 640 {
 641         struct omap_hdmi *hd = dev_get_drvdata(dev);
 642         int ret;
 643
 644         mutex_lock(&hd->lock);
 645
 646         if (!hdmi_mode_has_audio(&hd->cfg) || !hd->display_enabled) {
 647                 ret = -EPERM;
 648                 goto out;
 649         }
 650
 651         ret = hdmi4_audio_config(&hd->core, &hd->wp, dss_audio,
 652                                  hd->cfg.timings.pixelclock);
 653         if (!ret) {
 654                 hd->audio_configured = true;
 655                 hd->audio_config = *dss_audio;
 656         }
 657 out:
 658         mutex_unlock(&hd->lock);
 659
 660         return ret;
 661 }
 662
 663 static const struct omap_hdmi_audio_ops hdmi_audio_ops = {
 664         .audio_startup = hdmi_audio_startup,
 665         .audio_shutdown = hdmi_audio_shutdown,
 666         .audio_start = hdmi_audio_start,
 667         .audio_stop = hdmi_audio_stop,
 668         .audio_config = hdmi_audio_config,
 669 };
 670
 671 static int hdmi_audio_register(struct device *dev)
 672 {
 673         struct omap_hdmi_audio_pdata pdata = {
 674                 .dev = dev,
 675                 .dss_version = omapdss_get_version(),
 676                 .audio_dma_addr = hdmi_wp_get_audio_dma_addr(&hdmi.wp),
 677                 .ops = &hdmi_audio_ops,
 678         };
 679
 680         hdmi.audio_pdev = platform_device_register_data(
 681                 dev, "omap-hdmi-audio", PLATFORM_DEVID_AUTO,
 682                 &pdata, sizeof(pdata));
 683
 684         if (IS_ERR(hdmi.audio_pdev))
 685                 return PTR_ERR(hdmi.audio_pdev);
 686
 687         return 0;
 688 }
 689
 690 /* HDMI HW IP initialisation */
 691 static int hdmi4_bind(struct device *dev, struct device *master, void *data)
 692 {
 693         struct platform_device *pdev = to_platform_device(dev);
 694         int r;
 695         int irq;
 696
 697         hdmi.pdev = pdev;
 698         dev_set_drvdata(&pdev->dev, &hdmi);
 699
 700         mutex_init(&hdmi.lock);
 701         spin_lock_init(&hdmi.audio_playing_lock);
 702
 703         if (pdev->dev.of_node) {
 704                 r = hdmi_probe_of(pdev);
 705                 if (r)
 706                         return r;
 707         }
 708
 709         r = hdmi_wp_init(pdev, &hdmi.wp);
 710         if (r)
 711                 return r;
 712
 713         r = hdmi_pll_init(pdev, &hdmi.pll, &hdmi.wp);
 714         if (r)
 715                 return r;
 716
 717         r = hdmi_phy_init(pdev, &hdmi.phy);
 718         if (r)
 719                 goto err;
 720
 721         r = hdmi4_core_init(pdev, &hdmi.core);
 722         if (r)
 723                 goto err;
 724
 725         irq = platform_get_irq(pdev, 0);
 726         if (irq < 0) {
 727                 DSSERR("platform_get_irq failed\n");
 728                 r = -ENODEV;
 729                 goto err;
 730         }
 731
 732         r = devm_request_threaded_irq(&pdev->dev, irq,
 733                         NULL, hdmi_irq_handler,
 734                         IRQF_ONESHOT, "OMAP HDMI", &hdmi.wp);
 735         if (r) {
 736                 DSSERR("HDMI IRQ request failed\n");
 737                 goto err;
 738         }
 739
 740         pm_runtime_enable(&pdev->dev);
 741
 742         hdmi_init_output(pdev);
 743
 744         r = hdmi_audio_register(&pdev->dev);
 745         if (r) {
 746                 DSSERR("Registering HDMI audio failed\n");
 747                 hdmi_uninit_output(pdev);
 748                 pm_runtime_disable(&pdev->dev);
 749                 return r;
 750         }
 751
 752         dss_debugfs_create_file("hdmi", hdmi_dump_regs);
 753
 754         return 0;
 755 err:
 756         hdmi_pll_uninit(&hdmi.pll);
 757         return r;
 758 }
 759
 760 static void hdmi4_unbind(struct device *dev, struct device *master, void *data)
 761 {
 762         struct platform_device *pdev = to_platform_device(dev);
 763
 764         if (hdmi.audio_pdev)
 765                 platform_device_unregister(hdmi.audio_pdev);
 766
 767         hdmi_uninit_output(pdev);
 768
 769         hdmi_pll_uninit(&hdmi.pll);
 770
 771         pm_runtime_disable(&pdev->dev);
 772 }
 773
 774 static const struct component_ops hdmi4_component_ops = {
 775         .bind   = hdmi4_bind,
 776         .unbind = hdmi4_unbind,
 777 };
 778
 779 static int hdmi4_probe(struct platform_device *pdev)
 780 {
 781         return component_add(&pdev->dev, &hdmi4_component_ops);
 782 }
 783
 784 static int hdmi4_remove(struct platform_device *pdev)
 785 {
 786         component_del(&pdev->dev, &hdmi4_component_ops);
 787         return 0;
 788 }
 789
 790 static int hdmi_runtime_suspend(struct device *dev)
 791 {
 792         dispc_runtime_put();
 793
 794         return 0;
 795 }
 796
 797 static int hdmi_runtime_resume(struct device *dev)
 798 {
 799         int r;
 800
 801         r = dispc_runtime_get();
 802         if (r < 0)
 803                 return r;
 804
 805         return 0;
 806 }
 807
 808 static const struct dev_pm_ops hdmi_pm_ops = {
 809         .runtime_suspend = hdmi_runtime_suspend,
 810         .runtime_resume = hdmi_runtime_resume,
 811 };
 812
 813 static const struct of_device_id hdmi_of_match[] = {
 814         { .compatible = "ti,omap4-hdmi", },
 815         {},
 816 };
 817
 818 static struct platform_driver omapdss_hdmihw_driver = {
 819         .probe          = hdmi4_probe,
 820         .remove         = hdmi4_remove,
 821         .driver         = {
 822                 .name   = "omapdss_hdmi",
 823                 .pm     = &hdmi_pm_ops,
 824                 .of_match_table = hdmi_of_match,
 825                 .suppress_bind_attrs = true,
 826         },
 827 };
 828
 829 int __init hdmi4_init_platform_driver(void)
 830 {
 831         return platform_driver_register(&omapdss_hdmihw_driver);
 832 }
 833
 834 void hdmi4_uninit_platform_driver(void)
 835 {
 836         platform_driver_unregister(&omapdss_hdmihw_driver);
 837 }