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 <sound/omap-hdmi-audio.h> 38 39 #include "omapdss.h" 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 /* DSS_HDMI_TCLK is bitclk / 10 */ 181 pc *= 10; 182 183 dss_pll_calc_b(&hdmi.pll.pll, clk_get_rate(hdmi.pll.pll.clkin), 184 pc, &hdmi_cinfo); 185 186 r = dss_pll_enable(&hdmi.pll.pll); 187 if (r) { 188 DSSERR("Failed to enable PLL\n"); 189 goto err_pll_enable; 190 } 191 192 r = dss_pll_set_config(&hdmi.pll.pll, &hdmi_cinfo); 193 if (r) { 194 DSSERR("Failed to configure PLL\n"); 195 goto err_pll_cfg; 196 } 197 198 r = hdmi_phy_configure(&hdmi.phy, hdmi_cinfo.clkdco, 199 hdmi_cinfo.clkout[0]); 200 if (r) { 201 DSSDBG("Failed to configure PHY\n"); 202 goto err_phy_cfg; 203 } 204 205 r = hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON); 206 if (r) 207 goto err_phy_pwr; 208 209 hdmi4_configure(&hdmi.core, &hdmi.wp, &hdmi.cfg); 210 211 /* tv size */ 212 dss_mgr_set_timings(channel, p); 213 214 r = dss_mgr_enable(channel); 215 if (r) 216 goto err_mgr_enable; 217 218 r = hdmi_wp_video_start(&hdmi.wp); 219 if (r) 220 goto err_vid_enable; 221 222 hdmi_wp_set_irqenable(wp, 223 HDMI_IRQ_LINK_CONNECT | HDMI_IRQ_LINK_DISCONNECT); 224 225 return 0; 226 227 err_vid_enable: 228 dss_mgr_disable(channel); 229 err_mgr_enable: 230 hdmi_wp_set_phy_pwr(&hdmi.wp, HDMI_PHYPWRCMD_OFF); 231 err_phy_pwr: 232 err_phy_cfg: 233 err_pll_cfg: 234 dss_pll_disable(&hdmi.pll.pll); 235 err_pll_enable: 236 hdmi_power_off_core(dssdev); 237 return -EIO; 238 } 239 240 static void hdmi_power_off_full(struct omap_dss_device *dssdev) 241 { 242 enum omap_channel channel = dssdev->dispc_channel; 243 244 hdmi_wp_clear_irqenable(&hdmi.wp, 0xffffffff); 245 246 hdmi_wp_video_stop(&hdmi.wp); 247 248 dss_mgr_disable(channel); 249 250 hdmi_wp_set_phy_pwr(&hdmi.wp, HDMI_PHYPWRCMD_OFF); 251 252 dss_pll_disable(&hdmi.pll.pll); 253 254 hdmi_power_off_core(dssdev); 255 } 256 257 static int hdmi_display_check_timing(struct omap_dss_device *dssdev, 258 struct omap_video_timings *timings) 259 { 260 if (!dispc_mgr_timings_ok(dssdev->dispc_channel, timings)) 261 return -EINVAL; 262 263 return 0; 264 } 265 266 static void hdmi_display_set_timing(struct omap_dss_device *dssdev, 267 struct omap_video_timings *timings) 268 { 269 mutex_lock(&hdmi.lock); 270 271 hdmi.cfg.timings = *timings; 272 273 dispc_set_tv_pclk(timings->pixelclock); 274 275 mutex_unlock(&hdmi.lock); 276 } 277 278 static void hdmi_display_get_timings(struct omap_dss_device *dssdev, 279 struct omap_video_timings *timings) 280 { 281 *timings = hdmi.cfg.timings; 282 } 283 284 static void hdmi_dump_regs(struct seq_file *s) 285 { 286 mutex_lock(&hdmi.lock); 287 288 if (hdmi_runtime_get()) { 289 mutex_unlock(&hdmi.lock); 290 return; 291 } 292 293 hdmi_wp_dump(&hdmi.wp, s); 294 hdmi_pll_dump(&hdmi.pll, s); 295 hdmi_phy_dump(&hdmi.phy, s); 296 hdmi4_core_dump(&hdmi.core, s); 297 298 hdmi_runtime_put(); 299 mutex_unlock(&hdmi.lock); 300 } 301 302 static int read_edid(u8 *buf, int len) 303 { 304 int r; 305 306 mutex_lock(&hdmi.lock); 307 308 r = hdmi_runtime_get(); 309 BUG_ON(r); 310 311 r = hdmi4_read_edid(&hdmi.core, buf, len); 312 313 hdmi_runtime_put(); 314 mutex_unlock(&hdmi.lock); 315 316 return r; 317 } 318 319 static void hdmi_start_audio_stream(struct omap_hdmi *hd) 320 { 321 hdmi_wp_audio_enable(&hd->wp, true); 322 hdmi4_audio_start(&hd->core, &hd->wp); 323 } 324 325 static void hdmi_stop_audio_stream(struct omap_hdmi *hd) 326 { 327 hdmi4_audio_stop(&hd->core, &hd->wp); 328 hdmi_wp_audio_enable(&hd->wp, false); 329 } 330 331 static int hdmi_display_enable(struct omap_dss_device *dssdev) 332 { 333 struct omap_dss_device *out = &hdmi.output; 334 unsigned long flags; 335 int r = 0; 336 337 DSSDBG("ENTER hdmi_display_enable\n"); 338 339 mutex_lock(&hdmi.lock); 340 341 if (!out->dispc_channel_connected) { 342 DSSERR("failed to enable display: no output/manager\n"); 343 r = -ENODEV; 344 goto err0; 345 } 346 347 r = hdmi_power_on_full(dssdev); 348 if (r) { 349 DSSERR("failed to power on device\n"); 350 goto err0; 351 } 352 353 if (hdmi.audio_configured) { 354 r = hdmi4_audio_config(&hdmi.core, &hdmi.wp, &hdmi.audio_config, 355 hdmi.cfg.timings.pixelclock); 356 if (r) { 357 DSSERR("Error restoring audio configuration: %d", r); 358 hdmi.audio_abort_cb(&hdmi.pdev->dev); 359 hdmi.audio_configured = false; 360 } 361 } 362 363 spin_lock_irqsave(&hdmi.audio_playing_lock, flags); 364 if (hdmi.audio_configured && hdmi.audio_playing) 365 hdmi_start_audio_stream(&hdmi); 366 hdmi.display_enabled = true; 367 spin_unlock_irqrestore(&hdmi.audio_playing_lock, flags); 368 369 mutex_unlock(&hdmi.lock); 370 return 0; 371 372 err0: 373 mutex_unlock(&hdmi.lock); 374 return r; 375 } 376 377 static void hdmi_display_disable(struct omap_dss_device *dssdev) 378 { 379 unsigned long flags; 380 381 DSSDBG("Enter hdmi_display_disable\n"); 382 383 mutex_lock(&hdmi.lock); 384 385 spin_lock_irqsave(&hdmi.audio_playing_lock, flags); 386 hdmi_stop_audio_stream(&hdmi); 387 hdmi.display_enabled = false; 388 spin_unlock_irqrestore(&hdmi.audio_playing_lock, flags); 389 390 hdmi_power_off_full(dssdev); 391 392 mutex_unlock(&hdmi.lock); 393 } 394 395 static int hdmi_core_enable(struct omap_dss_device *dssdev) 396 { 397 int r = 0; 398 399 DSSDBG("ENTER omapdss_hdmi_core_enable\n"); 400 401 mutex_lock(&hdmi.lock); 402 403 r = hdmi_power_on_core(dssdev); 404 if (r) { 405 DSSERR("failed to power on device\n"); 406 goto err0; 407 } 408 409 mutex_unlock(&hdmi.lock); 410 return 0; 411 412 err0: 413 mutex_unlock(&hdmi.lock); 414 return r; 415 } 416 417 static void hdmi_core_disable(struct omap_dss_device *dssdev) 418 { 419 DSSDBG("Enter omapdss_hdmi_core_disable\n"); 420 421 mutex_lock(&hdmi.lock); 422 423 hdmi_power_off_core(dssdev); 424 425 mutex_unlock(&hdmi.lock); 426 } 427 428 static int hdmi_connect(struct omap_dss_device *dssdev, 429 struct omap_dss_device *dst) 430 { 431 enum omap_channel channel = dssdev->dispc_channel; 432 int r; 433 434 r = hdmi_init_regulator(); 435 if (r) 436 return r; 437 438 r = dss_mgr_connect(channel, dssdev); 439 if (r) 440 return r; 441 442 r = omapdss_output_set_device(dssdev, dst); 443 if (r) { 444 DSSERR("failed to connect output to new device: %s\n", 445 dst->name); 446 dss_mgr_disconnect(channel, dssdev); 447 return r; 448 } 449 450 return 0; 451 } 452 453 static void hdmi_disconnect(struct omap_dss_device *dssdev, 454 struct omap_dss_device *dst) 455 { 456 enum omap_channel channel = dssdev->dispc_channel; 457 458 WARN_ON(dst != dssdev->dst); 459 460 if (dst != dssdev->dst) 461 return; 462 463 omapdss_output_unset_device(dssdev); 464 465 dss_mgr_disconnect(channel, dssdev); 466 } 467 468 static int hdmi_read_edid(struct omap_dss_device *dssdev, 469 u8 *edid, int len) 470 { 471 bool need_enable; 472 int r; 473 474 need_enable = hdmi.core_enabled == false; 475 476 if (need_enable) { 477 r = hdmi_core_enable(dssdev); 478 if (r) 479 return r; 480 } 481 482 r = read_edid(edid, len); 483 484 if (need_enable) 485 hdmi_core_disable(dssdev); 486 487 return r; 488 } 489 490 static int hdmi_set_infoframe(struct omap_dss_device *dssdev, 491 const struct hdmi_avi_infoframe *avi) 492 { 493 hdmi.cfg.infoframe = *avi; 494 return 0; 495 } 496 497 static int hdmi_set_hdmi_mode(struct omap_dss_device *dssdev, 498 bool hdmi_mode) 499 { 500 hdmi.cfg.hdmi_dvi_mode = hdmi_mode ? HDMI_HDMI : HDMI_DVI; 501 return 0; 502 } 503 504 static const struct omapdss_hdmi_ops hdmi_ops = { 505 .connect = hdmi_connect, 506 .disconnect = hdmi_disconnect, 507 508 .enable = hdmi_display_enable, 509 .disable = hdmi_display_disable, 510 511 .check_timings = hdmi_display_check_timing, 512 .set_timings = hdmi_display_set_timing, 513 .get_timings = hdmi_display_get_timings, 514 515 .read_edid = hdmi_read_edid, 516 .set_infoframe = hdmi_set_infoframe, 517 .set_hdmi_mode = hdmi_set_hdmi_mode, 518 }; 519 520 static void hdmi_init_output(struct platform_device *pdev) 521 { 522 struct omap_dss_device *out = &hdmi.output; 523 524 out->dev = &pdev->dev; 525 out->id = OMAP_DSS_OUTPUT_HDMI; 526 out->output_type = OMAP_DISPLAY_TYPE_HDMI; 527 out->name = "hdmi.0"; 528 out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT; 529 out->ops.hdmi = &hdmi_ops; 530 out->owner = THIS_MODULE; 531 532 omapdss_register_output(out); 533 } 534 535 static void hdmi_uninit_output(struct platform_device *pdev) 536 { 537 struct omap_dss_device *out = &hdmi.output; 538 539 omapdss_unregister_output(out); 540 } 541 542 static int hdmi_probe_of(struct platform_device *pdev) 543 { 544 struct device_node *node = pdev->dev.of_node; 545 struct device_node *ep; 546 int r; 547 548 ep = omapdss_of_get_first_endpoint(node); 549 if (!ep) 550 return 0; 551 552 r = hdmi_parse_lanes_of(pdev, ep, &hdmi.phy); 553 if (r) 554 goto err; 555 556 of_node_put(ep); 557 return 0; 558 559 err: 560 of_node_put(ep); 561 return r; 562 } 563 564 /* Audio callbacks */ 565 static int hdmi_audio_startup(struct device *dev, 566 void (*abort_cb)(struct device *dev)) 567 { 568 struct omap_hdmi *hd = dev_get_drvdata(dev); 569 int ret = 0; 570 571 mutex_lock(&hd->lock); 572 573 if (!hdmi_mode_has_audio(&hd->cfg) || !hd->display_enabled) { 574 ret = -EPERM; 575 goto out; 576 } 577 578 hd->audio_abort_cb = abort_cb; 579 580 out: 581 mutex_unlock(&hd->lock); 582 583 return ret; 584 } 585 586 static int hdmi_audio_shutdown(struct device *dev) 587 { 588 struct omap_hdmi *hd = dev_get_drvdata(dev); 589 590 mutex_lock(&hd->lock); 591 hd->audio_abort_cb = NULL; 592 hd->audio_configured = false; 593 hd->audio_playing = false; 594 mutex_unlock(&hd->lock); 595 596 return 0; 597 } 598 599 static int hdmi_audio_start(struct device *dev) 600 { 601 struct omap_hdmi *hd = dev_get_drvdata(dev); 602 unsigned long flags; 603 604 WARN_ON(!hdmi_mode_has_audio(&hd->cfg)); 605 606 spin_lock_irqsave(&hd->audio_playing_lock, flags); 607 608 if (hd->display_enabled) 609 hdmi_start_audio_stream(hd); 610 hd->audio_playing = true; 611 612 spin_unlock_irqrestore(&hd->audio_playing_lock, flags); 613 return 0; 614 } 615 616 static void hdmi_audio_stop(struct device *dev) 617 { 618 struct omap_hdmi *hd = dev_get_drvdata(dev); 619 unsigned long flags; 620 621 WARN_ON(!hdmi_mode_has_audio(&hd->cfg)); 622 623 spin_lock_irqsave(&hd->audio_playing_lock, flags); 624 625 if (hd->display_enabled) 626 hdmi_stop_audio_stream(hd); 627 hd->audio_playing = false; 628 629 spin_unlock_irqrestore(&hd->audio_playing_lock, flags); 630 } 631 632 static int hdmi_audio_config(struct device *dev, 633 struct omap_dss_audio *dss_audio) 634 { 635 struct omap_hdmi *hd = dev_get_drvdata(dev); 636 int ret; 637 638 mutex_lock(&hd->lock); 639 640 if (!hdmi_mode_has_audio(&hd->cfg) || !hd->display_enabled) { 641 ret = -EPERM; 642 goto out; 643 } 644 645 ret = hdmi4_audio_config(&hd->core, &hd->wp, dss_audio, 646 hd->cfg.timings.pixelclock); 647 if (!ret) { 648 hd->audio_configured = true; 649 hd->audio_config = *dss_audio; 650 } 651 out: 652 mutex_unlock(&hd->lock); 653 654 return ret; 655 } 656 657 static const struct omap_hdmi_audio_ops hdmi_audio_ops = { 658 .audio_startup = hdmi_audio_startup, 659 .audio_shutdown = hdmi_audio_shutdown, 660 .audio_start = hdmi_audio_start, 661 .audio_stop = hdmi_audio_stop, 662 .audio_config = hdmi_audio_config, 663 }; 664 665 static int hdmi_audio_register(struct device *dev) 666 { 667 struct omap_hdmi_audio_pdata pdata = { 668 .dev = dev, 669 .dss_version = omapdss_get_version(), 670 .audio_dma_addr = hdmi_wp_get_audio_dma_addr(&hdmi.wp), 671 .ops = &hdmi_audio_ops, 672 }; 673 674 hdmi.audio_pdev = platform_device_register_data( 675 dev, "omap-hdmi-audio", PLATFORM_DEVID_AUTO, 676 &pdata, sizeof(pdata)); 677 678 if (IS_ERR(hdmi.audio_pdev)) 679 return PTR_ERR(hdmi.audio_pdev); 680 681 return 0; 682 } 683 684 /* HDMI HW IP initialisation */ 685 static int hdmi4_bind(struct device *dev, struct device *master, void *data) 686 { 687 struct platform_device *pdev = to_platform_device(dev); 688 int r; 689 int irq; 690 691 hdmi.pdev = pdev; 692 dev_set_drvdata(&pdev->dev, &hdmi); 693 694 mutex_init(&hdmi.lock); 695 spin_lock_init(&hdmi.audio_playing_lock); 696 697 if (pdev->dev.of_node) { 698 r = hdmi_probe_of(pdev); 699 if (r) 700 return r; 701 } 702 703 r = hdmi_wp_init(pdev, &hdmi.wp); 704 if (r) 705 return r; 706 707 r = hdmi_pll_init(pdev, &hdmi.pll, &hdmi.wp); 708 if (r) 709 return r; 710 711 r = hdmi_phy_init(pdev, &hdmi.phy); 712 if (r) 713 goto err; 714 715 r = hdmi4_core_init(pdev, &hdmi.core); 716 if (r) 717 goto err; 718 719 irq = platform_get_irq(pdev, 0); 720 if (irq < 0) { 721 DSSERR("platform_get_irq failed\n"); 722 r = -ENODEV; 723 goto err; 724 } 725 726 r = devm_request_threaded_irq(&pdev->dev, irq, 727 NULL, hdmi_irq_handler, 728 IRQF_ONESHOT, "OMAP HDMI", &hdmi.wp); 729 if (r) { 730 DSSERR("HDMI IRQ request failed\n"); 731 goto err; 732 } 733 734 pm_runtime_enable(&pdev->dev); 735 736 hdmi_init_output(pdev); 737 738 r = hdmi_audio_register(&pdev->dev); 739 if (r) { 740 DSSERR("Registering HDMI audio failed\n"); 741 hdmi_uninit_output(pdev); 742 pm_runtime_disable(&pdev->dev); 743 return r; 744 } 745 746 dss_debugfs_create_file("hdmi", hdmi_dump_regs); 747 748 return 0; 749 err: 750 hdmi_pll_uninit(&hdmi.pll); 751 return r; 752 } 753 754 static void hdmi4_unbind(struct device *dev, struct device *master, void *data) 755 { 756 struct platform_device *pdev = to_platform_device(dev); 757 758 if (hdmi.audio_pdev) 759 platform_device_unregister(hdmi.audio_pdev); 760 761 hdmi_uninit_output(pdev); 762 763 hdmi_pll_uninit(&hdmi.pll); 764 765 pm_runtime_disable(&pdev->dev); 766 } 767 768 static const struct component_ops hdmi4_component_ops = { 769 .bind = hdmi4_bind, 770 .unbind = hdmi4_unbind, 771 }; 772 773 static int hdmi4_probe(struct platform_device *pdev) 774 { 775 return component_add(&pdev->dev, &hdmi4_component_ops); 776 } 777 778 static int hdmi4_remove(struct platform_device *pdev) 779 { 780 component_del(&pdev->dev, &hdmi4_component_ops); 781 return 0; 782 } 783 784 static int hdmi_runtime_suspend(struct device *dev) 785 { 786 dispc_runtime_put(); 787 788 return 0; 789 } 790 791 static int hdmi_runtime_resume(struct device *dev) 792 { 793 int r; 794 795 r = dispc_runtime_get(); 796 if (r < 0) 797 return r; 798 799 return 0; 800 } 801 802 static const struct dev_pm_ops hdmi_pm_ops = { 803 .runtime_suspend = hdmi_runtime_suspend, 804 .runtime_resume = hdmi_runtime_resume, 805 }; 806 807 static const struct of_device_id hdmi_of_match[] = { 808 { .compatible = "ti,omap4-hdmi", }, 809 {}, 810 }; 811 812 static struct platform_driver omapdss_hdmihw_driver = { 813 .probe = hdmi4_probe, 814 .remove = hdmi4_remove, 815 .driver = { 816 .name = "omapdss_hdmi", 817 .pm = &hdmi_pm_ops, 818 .of_match_table = hdmi_of_match, 819 .suppress_bind_attrs = true, 820 }, 821 }; 822 823 int __init hdmi4_init_platform_driver(void) 824 { 825 return platform_driver_register(&omapdss_hdmihw_driver); 826 } 827 828 void hdmi4_uninit_platform_driver(void) 829 { 830 platform_driver_unregister(&omapdss_hdmihw_driver); 831 } 832