1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * HDMI interface DSS driver for TI's OMAP4 family of SoCs. 4 * 5 * Copyright (C) 2010-2011 Texas Instruments Incorporated - https://www.ti.com/ 6 * Authors: Yong Zhi 7 * Mythri pk <mythripk@ti.com> 8 */ 9 10 #define DSS_SUBSYS_NAME "HDMI" 11 12 #include <linux/kernel.h> 13 #include <linux/module.h> 14 #include <linux/err.h> 15 #include <linux/io.h> 16 #include <linux/interrupt.h> 17 #include <linux/mutex.h> 18 #include <linux/delay.h> 19 #include <linux/string.h> 20 #include <linux/platform_device.h> 21 #include <linux/pm_runtime.h> 22 #include <linux/clk.h> 23 #include <linux/regulator/consumer.h> 24 #include <linux/component.h> 25 #include <linux/of.h> 26 #include <linux/of_graph.h> 27 #include <sound/omap-hdmi-audio.h> 28 #include <media/cec.h> 29 30 #include <drm/drm_atomic.h> 31 #include <drm/drm_atomic_state_helper.h> 32 33 #include "omapdss.h" 34 #include "hdmi4_core.h" 35 #include "hdmi4_cec.h" 36 #include "dss.h" 37 #include "hdmi.h" 38 39 static int hdmi_runtime_get(struct omap_hdmi *hdmi) 40 { 41 int r; 42 43 DSSDBG("hdmi_runtime_get\n"); 44 45 r = pm_runtime_get_sync(&hdmi->pdev->dev); 46 if (WARN_ON(r < 0)) { 47 pm_runtime_put_noidle(&hdmi->pdev->dev); 48 return r; 49 } 50 return 0; 51 } 52 53 static void hdmi_runtime_put(struct omap_hdmi *hdmi) 54 { 55 int r; 56 57 DSSDBG("hdmi_runtime_put\n"); 58 59 r = pm_runtime_put_sync(&hdmi->pdev->dev); 60 WARN_ON(r < 0 && r != -ENOSYS); 61 } 62 63 static irqreturn_t hdmi_irq_handler(int irq, void *data) 64 { 65 struct omap_hdmi *hdmi = data; 66 struct hdmi_wp_data *wp = &hdmi->wp; 67 u32 irqstatus; 68 69 irqstatus = hdmi_wp_get_irqstatus(wp); 70 hdmi_wp_set_irqstatus(wp, irqstatus); 71 72 if ((irqstatus & HDMI_IRQ_LINK_CONNECT) && 73 irqstatus & HDMI_IRQ_LINK_DISCONNECT) { 74 /* 75 * If we get both connect and disconnect interrupts at the same 76 * time, turn off the PHY, clear interrupts, and restart, which 77 * raises connect interrupt if a cable is connected, or nothing 78 * if cable is not connected. 79 */ 80 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_OFF); 81 82 hdmi_wp_set_irqstatus(wp, HDMI_IRQ_LINK_CONNECT | 83 HDMI_IRQ_LINK_DISCONNECT); 84 85 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON); 86 } else if (irqstatus & HDMI_IRQ_LINK_CONNECT) { 87 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_TXON); 88 } else if (irqstatus & HDMI_IRQ_LINK_DISCONNECT) { 89 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON); 90 } 91 if (irqstatus & HDMI_IRQ_CORE) { 92 u32 intr4 = hdmi_read_reg(hdmi->core.base, HDMI_CORE_SYS_INTR4); 93 94 hdmi_write_reg(hdmi->core.base, HDMI_CORE_SYS_INTR4, intr4); 95 if (intr4 & 8) 96 hdmi4_cec_irq(&hdmi->core); 97 } 98 99 return IRQ_HANDLED; 100 } 101 102 static int hdmi_power_on_core(struct omap_hdmi *hdmi) 103 { 104 int r; 105 106 if (hdmi->core.core_pwr_cnt++) 107 return 0; 108 109 r = regulator_enable(hdmi->vdda_reg); 110 if (r) 111 goto err_reg_enable; 112 113 r = hdmi_runtime_get(hdmi); 114 if (r) 115 goto err_runtime_get; 116 117 hdmi4_core_powerdown_disable(&hdmi->core); 118 119 /* Make selection of HDMI in DSS */ 120 dss_select_hdmi_venc_clk_source(hdmi->dss, DSS_HDMI_M_PCLK); 121 122 hdmi->core_enabled = true; 123 124 return 0; 125 126 err_runtime_get: 127 regulator_disable(hdmi->vdda_reg); 128 err_reg_enable: 129 hdmi->core.core_pwr_cnt--; 130 131 return r; 132 } 133 134 static void hdmi_power_off_core(struct omap_hdmi *hdmi) 135 { 136 if (--hdmi->core.core_pwr_cnt) 137 return; 138 139 hdmi->core_enabled = false; 140 141 hdmi_runtime_put(hdmi); 142 regulator_disable(hdmi->vdda_reg); 143 } 144 145 static int hdmi_power_on_full(struct omap_hdmi *hdmi) 146 { 147 int r; 148 const struct videomode *vm; 149 struct hdmi_wp_data *wp = &hdmi->wp; 150 struct dss_pll_clock_info hdmi_cinfo = { 0 }; 151 unsigned int pc; 152 153 r = hdmi_power_on_core(hdmi); 154 if (r) 155 return r; 156 157 /* disable and clear irqs */ 158 hdmi_wp_clear_irqenable(wp, ~HDMI_IRQ_CORE); 159 hdmi_wp_set_irqstatus(wp, ~HDMI_IRQ_CORE); 160 161 vm = &hdmi->cfg.vm; 162 163 DSSDBG("hdmi_power_on hactive= %d vactive = %d\n", vm->hactive, 164 vm->vactive); 165 166 pc = vm->pixelclock; 167 if (vm->flags & DISPLAY_FLAGS_DOUBLECLK) 168 pc *= 2; 169 170 /* DSS_HDMI_TCLK is bitclk / 10 */ 171 pc *= 10; 172 173 dss_pll_calc_b(&hdmi->pll.pll, clk_get_rate(hdmi->pll.pll.clkin), 174 pc, &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 r = dss_mgr_enable(&hdmi->output); 202 if (r) 203 goto err_mgr_enable; 204 205 r = hdmi_wp_video_start(&hdmi->wp); 206 if (r) 207 goto err_vid_enable; 208 209 hdmi_wp_set_irqenable(wp, 210 HDMI_IRQ_LINK_CONNECT | HDMI_IRQ_LINK_DISCONNECT); 211 212 return 0; 213 214 err_vid_enable: 215 dss_mgr_disable(&hdmi->output); 216 err_mgr_enable: 217 hdmi_wp_set_phy_pwr(&hdmi->wp, HDMI_PHYPWRCMD_OFF); 218 err_phy_pwr: 219 err_phy_cfg: 220 err_pll_cfg: 221 dss_pll_disable(&hdmi->pll.pll); 222 err_pll_enable: 223 hdmi_power_off_core(hdmi); 224 return -EIO; 225 } 226 227 static void hdmi_power_off_full(struct omap_hdmi *hdmi) 228 { 229 hdmi_wp_clear_irqenable(&hdmi->wp, ~HDMI_IRQ_CORE); 230 231 hdmi_wp_video_stop(&hdmi->wp); 232 233 dss_mgr_disable(&hdmi->output); 234 235 hdmi_wp_set_phy_pwr(&hdmi->wp, HDMI_PHYPWRCMD_OFF); 236 237 dss_pll_disable(&hdmi->pll.pll); 238 239 hdmi_power_off_core(hdmi); 240 } 241 242 static int hdmi_dump_regs(struct seq_file *s, void *p) 243 { 244 struct omap_hdmi *hdmi = s->private; 245 246 mutex_lock(&hdmi->lock); 247 248 if (hdmi_runtime_get(hdmi)) { 249 mutex_unlock(&hdmi->lock); 250 return 0; 251 } 252 253 hdmi_wp_dump(&hdmi->wp, s); 254 hdmi_pll_dump(&hdmi->pll, s); 255 hdmi_phy_dump(&hdmi->phy, s); 256 hdmi4_core_dump(&hdmi->core, s); 257 258 hdmi_runtime_put(hdmi); 259 mutex_unlock(&hdmi->lock); 260 return 0; 261 } 262 263 static void hdmi_start_audio_stream(struct omap_hdmi *hd) 264 { 265 hdmi_wp_audio_enable(&hd->wp, true); 266 hdmi4_audio_start(&hd->core, &hd->wp); 267 } 268 269 static void hdmi_stop_audio_stream(struct omap_hdmi *hd) 270 { 271 hdmi4_audio_stop(&hd->core, &hd->wp); 272 hdmi_wp_audio_enable(&hd->wp, false); 273 } 274 275 int hdmi4_core_enable(struct hdmi_core_data *core) 276 { 277 struct omap_hdmi *hdmi = container_of(core, struct omap_hdmi, core); 278 int r = 0; 279 280 DSSDBG("ENTER omapdss_hdmi4_core_enable\n"); 281 282 mutex_lock(&hdmi->lock); 283 284 r = hdmi_power_on_core(hdmi); 285 if (r) { 286 DSSERR("failed to power on device\n"); 287 goto err0; 288 } 289 290 mutex_unlock(&hdmi->lock); 291 return 0; 292 293 err0: 294 mutex_unlock(&hdmi->lock); 295 return r; 296 } 297 298 void hdmi4_core_disable(struct hdmi_core_data *core) 299 { 300 struct omap_hdmi *hdmi = container_of(core, struct omap_hdmi, core); 301 302 DSSDBG("Enter omapdss_hdmi4_core_disable\n"); 303 304 mutex_lock(&hdmi->lock); 305 306 hdmi_power_off_core(hdmi); 307 308 mutex_unlock(&hdmi->lock); 309 } 310 311 /* ----------------------------------------------------------------------------- 312 * DRM Bridge Operations 313 */ 314 315 static int hdmi4_bridge_attach(struct drm_bridge *bridge, 316 enum drm_bridge_attach_flags flags) 317 { 318 struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge); 319 320 if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) 321 return -EINVAL; 322 323 return drm_bridge_attach(bridge->encoder, hdmi->output.next_bridge, 324 bridge, flags); 325 } 326 327 static void hdmi4_bridge_mode_set(struct drm_bridge *bridge, 328 const struct drm_display_mode *mode, 329 const struct drm_display_mode *adjusted_mode) 330 { 331 struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge); 332 333 mutex_lock(&hdmi->lock); 334 335 drm_display_mode_to_videomode(adjusted_mode, &hdmi->cfg.vm); 336 337 dispc_set_tv_pclk(hdmi->dss->dispc, adjusted_mode->clock * 1000); 338 339 mutex_unlock(&hdmi->lock); 340 } 341 342 static void hdmi4_bridge_enable(struct drm_bridge *bridge, 343 struct drm_bridge_state *bridge_state) 344 { 345 struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge); 346 struct drm_atomic_state *state = bridge_state->base.state; 347 struct drm_connector_state *conn_state; 348 struct drm_connector *connector; 349 struct drm_crtc_state *crtc_state; 350 unsigned long flags; 351 int ret; 352 353 /* 354 * None of these should fail, as the bridge can't be enabled without a 355 * valid CRTC to connector path with fully populated new states. 356 */ 357 connector = drm_atomic_get_new_connector_for_encoder(state, 358 bridge->encoder); 359 if (WARN_ON(!connector)) 360 return; 361 conn_state = drm_atomic_get_new_connector_state(state, connector); 362 if (WARN_ON(!conn_state)) 363 return; 364 crtc_state = drm_atomic_get_new_crtc_state(state, conn_state->crtc); 365 if (WARN_ON(!crtc_state)) 366 return; 367 368 hdmi->cfg.hdmi_dvi_mode = connector->display_info.is_hdmi 369 ? HDMI_HDMI : HDMI_DVI; 370 371 if (connector->display_info.is_hdmi) { 372 const struct drm_display_mode *mode; 373 struct hdmi_avi_infoframe avi; 374 375 mode = &crtc_state->adjusted_mode; 376 ret = drm_hdmi_avi_infoframe_from_display_mode(&avi, connector, 377 mode); 378 if (ret == 0) 379 hdmi->cfg.infoframe = avi; 380 } 381 382 mutex_lock(&hdmi->lock); 383 384 ret = hdmi_power_on_full(hdmi); 385 if (ret) { 386 DSSERR("failed to power on device\n"); 387 goto done; 388 } 389 390 if (hdmi->audio_configured) { 391 ret = hdmi4_audio_config(&hdmi->core, &hdmi->wp, 392 &hdmi->audio_config, 393 hdmi->cfg.vm.pixelclock); 394 if (ret) { 395 DSSERR("Error restoring audio configuration: %d", ret); 396 hdmi->audio_abort_cb(&hdmi->pdev->dev); 397 hdmi->audio_configured = false; 398 } 399 } 400 401 spin_lock_irqsave(&hdmi->audio_playing_lock, flags); 402 if (hdmi->audio_configured && hdmi->audio_playing) 403 hdmi_start_audio_stream(hdmi); 404 hdmi->display_enabled = true; 405 spin_unlock_irqrestore(&hdmi->audio_playing_lock, flags); 406 407 done: 408 mutex_unlock(&hdmi->lock); 409 } 410 411 static void hdmi4_bridge_disable(struct drm_bridge *bridge, 412 struct drm_bridge_state *bridge_state) 413 { 414 struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge); 415 unsigned long flags; 416 417 mutex_lock(&hdmi->lock); 418 419 spin_lock_irqsave(&hdmi->audio_playing_lock, flags); 420 hdmi_stop_audio_stream(hdmi); 421 hdmi->display_enabled = false; 422 spin_unlock_irqrestore(&hdmi->audio_playing_lock, flags); 423 424 hdmi_power_off_full(hdmi); 425 426 mutex_unlock(&hdmi->lock); 427 } 428 429 static void hdmi4_bridge_hpd_notify(struct drm_bridge *bridge, 430 enum drm_connector_status status) 431 { 432 struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge); 433 434 if (status == connector_status_disconnected) 435 hdmi4_cec_set_phys_addr(&hdmi->core, CEC_PHYS_ADDR_INVALID); 436 } 437 438 static struct edid *hdmi4_bridge_get_edid(struct drm_bridge *bridge, 439 struct drm_connector *connector) 440 { 441 struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge); 442 struct edid *edid = NULL; 443 unsigned int cec_addr; 444 bool need_enable; 445 int r; 446 447 need_enable = hdmi->core_enabled == false; 448 449 if (need_enable) { 450 r = hdmi4_core_enable(&hdmi->core); 451 if (r) 452 return NULL; 453 } 454 455 mutex_lock(&hdmi->lock); 456 r = hdmi_runtime_get(hdmi); 457 BUG_ON(r); 458 459 r = hdmi4_core_ddc_init(&hdmi->core); 460 if (r) 461 goto done; 462 463 edid = drm_do_get_edid(connector, hdmi4_core_ddc_read, &hdmi->core); 464 465 done: 466 hdmi_runtime_put(hdmi); 467 mutex_unlock(&hdmi->lock); 468 469 if (edid && edid->extensions) { 470 unsigned int len = (edid->extensions + 1) * EDID_LENGTH; 471 472 cec_addr = cec_get_edid_phys_addr((u8 *)edid, len, NULL); 473 } else { 474 cec_addr = CEC_PHYS_ADDR_INVALID; 475 } 476 477 hdmi4_cec_set_phys_addr(&hdmi->core, cec_addr); 478 479 if (need_enable) 480 hdmi4_core_disable(&hdmi->core); 481 482 return edid; 483 } 484 485 static const struct drm_bridge_funcs hdmi4_bridge_funcs = { 486 .attach = hdmi4_bridge_attach, 487 .mode_set = hdmi4_bridge_mode_set, 488 .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state, 489 .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state, 490 .atomic_reset = drm_atomic_helper_bridge_reset, 491 .atomic_enable = hdmi4_bridge_enable, 492 .atomic_disable = hdmi4_bridge_disable, 493 .hpd_notify = hdmi4_bridge_hpd_notify, 494 .get_edid = hdmi4_bridge_get_edid, 495 }; 496 497 static void hdmi4_bridge_init(struct omap_hdmi *hdmi) 498 { 499 hdmi->bridge.funcs = &hdmi4_bridge_funcs; 500 hdmi->bridge.of_node = hdmi->pdev->dev.of_node; 501 hdmi->bridge.ops = DRM_BRIDGE_OP_EDID; 502 hdmi->bridge.type = DRM_MODE_CONNECTOR_HDMIA; 503 504 drm_bridge_add(&hdmi->bridge); 505 } 506 507 static void hdmi4_bridge_cleanup(struct omap_hdmi *hdmi) 508 { 509 drm_bridge_remove(&hdmi->bridge); 510 } 511 512 /* ----------------------------------------------------------------------------- 513 * Audio Callbacks 514 */ 515 516 static int hdmi_audio_startup(struct device *dev, 517 void (*abort_cb)(struct device *dev)) 518 { 519 struct omap_hdmi *hd = dev_get_drvdata(dev); 520 521 mutex_lock(&hd->lock); 522 523 WARN_ON(hd->audio_abort_cb != NULL); 524 525 hd->audio_abort_cb = abort_cb; 526 527 mutex_unlock(&hd->lock); 528 529 return 0; 530 } 531 532 static int hdmi_audio_shutdown(struct device *dev) 533 { 534 struct omap_hdmi *hd = dev_get_drvdata(dev); 535 536 mutex_lock(&hd->lock); 537 hd->audio_abort_cb = NULL; 538 hd->audio_configured = false; 539 hd->audio_playing = false; 540 mutex_unlock(&hd->lock); 541 542 return 0; 543 } 544 545 static int hdmi_audio_start(struct device *dev) 546 { 547 struct omap_hdmi *hd = dev_get_drvdata(dev); 548 unsigned long flags; 549 550 spin_lock_irqsave(&hd->audio_playing_lock, flags); 551 552 if (hd->display_enabled) { 553 if (!hdmi_mode_has_audio(&hd->cfg)) 554 DSSERR("%s: Video mode does not support audio\n", 555 __func__); 556 hdmi_start_audio_stream(hd); 557 } 558 hd->audio_playing = true; 559 560 spin_unlock_irqrestore(&hd->audio_playing_lock, flags); 561 return 0; 562 } 563 564 static void hdmi_audio_stop(struct device *dev) 565 { 566 struct omap_hdmi *hd = dev_get_drvdata(dev); 567 unsigned long flags; 568 569 WARN_ON(!hdmi_mode_has_audio(&hd->cfg)); 570 571 spin_lock_irqsave(&hd->audio_playing_lock, flags); 572 573 if (hd->display_enabled) 574 hdmi_stop_audio_stream(hd); 575 hd->audio_playing = false; 576 577 spin_unlock_irqrestore(&hd->audio_playing_lock, flags); 578 } 579 580 static int hdmi_audio_config(struct device *dev, 581 struct omap_dss_audio *dss_audio) 582 { 583 struct omap_hdmi *hd = dev_get_drvdata(dev); 584 int ret = 0; 585 586 mutex_lock(&hd->lock); 587 588 if (hd->display_enabled) { 589 ret = hdmi4_audio_config(&hd->core, &hd->wp, dss_audio, 590 hd->cfg.vm.pixelclock); 591 if (ret) 592 goto out; 593 } 594 595 hd->audio_configured = true; 596 hd->audio_config = *dss_audio; 597 out: 598 mutex_unlock(&hd->lock); 599 600 return ret; 601 } 602 603 static const struct omap_hdmi_audio_ops hdmi_audio_ops = { 604 .audio_startup = hdmi_audio_startup, 605 .audio_shutdown = hdmi_audio_shutdown, 606 .audio_start = hdmi_audio_start, 607 .audio_stop = hdmi_audio_stop, 608 .audio_config = hdmi_audio_config, 609 }; 610 611 static int hdmi_audio_register(struct omap_hdmi *hdmi) 612 { 613 struct omap_hdmi_audio_pdata pdata = { 614 .dev = &hdmi->pdev->dev, 615 .version = 4, 616 .audio_dma_addr = hdmi_wp_get_audio_dma_addr(&hdmi->wp), 617 .ops = &hdmi_audio_ops, 618 }; 619 620 hdmi->audio_pdev = platform_device_register_data( 621 &hdmi->pdev->dev, "omap-hdmi-audio", PLATFORM_DEVID_AUTO, 622 &pdata, sizeof(pdata)); 623 624 if (IS_ERR(hdmi->audio_pdev)) 625 return PTR_ERR(hdmi->audio_pdev); 626 627 return 0; 628 } 629 630 /* ----------------------------------------------------------------------------- 631 * Component Bind & Unbind 632 */ 633 634 static int hdmi4_bind(struct device *dev, struct device *master, void *data) 635 { 636 struct dss_device *dss = dss_get_device(master); 637 struct omap_hdmi *hdmi = dev_get_drvdata(dev); 638 int r; 639 640 hdmi->dss = dss; 641 642 r = hdmi_runtime_get(hdmi); 643 if (r) 644 return r; 645 646 r = hdmi_pll_init(dss, hdmi->pdev, &hdmi->pll, &hdmi->wp); 647 if (r) 648 goto err_runtime_put; 649 650 r = hdmi4_cec_init(hdmi->pdev, &hdmi->core, &hdmi->wp); 651 if (r) 652 goto err_pll_uninit; 653 654 r = hdmi_audio_register(hdmi); 655 if (r) { 656 DSSERR("Registering HDMI audio failed\n"); 657 goto err_cec_uninit; 658 } 659 660 hdmi->debugfs = dss_debugfs_create_file(dss, "hdmi", hdmi_dump_regs, 661 hdmi); 662 663 hdmi_runtime_put(hdmi); 664 665 return 0; 666 667 err_cec_uninit: 668 hdmi4_cec_uninit(&hdmi->core); 669 err_pll_uninit: 670 hdmi_pll_uninit(&hdmi->pll); 671 err_runtime_put: 672 hdmi_runtime_put(hdmi); 673 return r; 674 } 675 676 static void hdmi4_unbind(struct device *dev, struct device *master, void *data) 677 { 678 struct omap_hdmi *hdmi = dev_get_drvdata(dev); 679 680 dss_debugfs_remove_file(hdmi->debugfs); 681 682 if (hdmi->audio_pdev) 683 platform_device_unregister(hdmi->audio_pdev); 684 685 hdmi4_cec_uninit(&hdmi->core); 686 hdmi_pll_uninit(&hdmi->pll); 687 } 688 689 static const struct component_ops hdmi4_component_ops = { 690 .bind = hdmi4_bind, 691 .unbind = hdmi4_unbind, 692 }; 693 694 /* ----------------------------------------------------------------------------- 695 * Probe & Remove, Suspend & Resume 696 */ 697 698 static int hdmi4_init_output(struct omap_hdmi *hdmi) 699 { 700 struct omap_dss_device *out = &hdmi->output; 701 int r; 702 703 hdmi4_bridge_init(hdmi); 704 705 out->dev = &hdmi->pdev->dev; 706 out->id = OMAP_DSS_OUTPUT_HDMI; 707 out->type = OMAP_DISPLAY_TYPE_HDMI; 708 out->name = "hdmi.0"; 709 out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT; 710 out->owner = THIS_MODULE; 711 out->of_port = 0; 712 713 r = omapdss_device_init_output(out, &hdmi->bridge); 714 if (r < 0) { 715 hdmi4_bridge_cleanup(hdmi); 716 return r; 717 } 718 719 omapdss_device_register(out); 720 721 return 0; 722 } 723 724 static void hdmi4_uninit_output(struct omap_hdmi *hdmi) 725 { 726 struct omap_dss_device *out = &hdmi->output; 727 728 omapdss_device_unregister(out); 729 omapdss_device_cleanup_output(out); 730 731 hdmi4_bridge_cleanup(hdmi); 732 } 733 734 static int hdmi4_probe_of(struct omap_hdmi *hdmi) 735 { 736 struct platform_device *pdev = hdmi->pdev; 737 struct device_node *node = pdev->dev.of_node; 738 struct device_node *ep; 739 int r; 740 741 ep = of_graph_get_endpoint_by_regs(node, 0, 0); 742 if (!ep) 743 return 0; 744 745 r = hdmi_parse_lanes_of(pdev, ep, &hdmi->phy); 746 of_node_put(ep); 747 return r; 748 } 749 750 static int hdmi4_probe(struct platform_device *pdev) 751 { 752 struct omap_hdmi *hdmi; 753 int irq; 754 int r; 755 756 hdmi = kzalloc(sizeof(*hdmi), GFP_KERNEL); 757 if (!hdmi) 758 return -ENOMEM; 759 760 hdmi->pdev = pdev; 761 762 dev_set_drvdata(&pdev->dev, hdmi); 763 764 mutex_init(&hdmi->lock); 765 spin_lock_init(&hdmi->audio_playing_lock); 766 767 r = hdmi4_probe_of(hdmi); 768 if (r) 769 goto err_free; 770 771 r = hdmi_wp_init(pdev, &hdmi->wp, 4); 772 if (r) 773 goto err_free; 774 775 r = hdmi_phy_init(pdev, &hdmi->phy, 4); 776 if (r) 777 goto err_free; 778 779 r = hdmi4_core_init(pdev, &hdmi->core); 780 if (r) 781 goto err_free; 782 783 irq = platform_get_irq(pdev, 0); 784 if (irq < 0) { 785 DSSERR("platform_get_irq failed\n"); 786 r = -ENODEV; 787 goto err_free; 788 } 789 790 r = devm_request_threaded_irq(&pdev->dev, irq, 791 NULL, hdmi_irq_handler, 792 IRQF_ONESHOT, "OMAP HDMI", hdmi); 793 if (r) { 794 DSSERR("HDMI IRQ request failed\n"); 795 goto err_free; 796 } 797 798 hdmi->vdda_reg = devm_regulator_get(&pdev->dev, "vdda"); 799 if (IS_ERR(hdmi->vdda_reg)) { 800 r = PTR_ERR(hdmi->vdda_reg); 801 if (r != -EPROBE_DEFER) 802 DSSERR("can't get VDDA regulator\n"); 803 goto err_free; 804 } 805 806 pm_runtime_enable(&pdev->dev); 807 808 r = hdmi4_init_output(hdmi); 809 if (r) 810 goto err_pm_disable; 811 812 r = component_add(&pdev->dev, &hdmi4_component_ops); 813 if (r) 814 goto err_uninit_output; 815 816 return 0; 817 818 err_uninit_output: 819 hdmi4_uninit_output(hdmi); 820 err_pm_disable: 821 pm_runtime_disable(&pdev->dev); 822 err_free: 823 kfree(hdmi); 824 return r; 825 } 826 827 static int hdmi4_remove(struct platform_device *pdev) 828 { 829 struct omap_hdmi *hdmi = platform_get_drvdata(pdev); 830 831 component_del(&pdev->dev, &hdmi4_component_ops); 832 833 hdmi4_uninit_output(hdmi); 834 835 pm_runtime_disable(&pdev->dev); 836 837 kfree(hdmi); 838 return 0; 839 } 840 841 static const struct of_device_id hdmi_of_match[] = { 842 { .compatible = "ti,omap4-hdmi", }, 843 {}, 844 }; 845 846 struct platform_driver omapdss_hdmi4hw_driver = { 847 .probe = hdmi4_probe, 848 .remove = hdmi4_remove, 849 .driver = { 850 .name = "omapdss_hdmi", 851 .of_match_table = hdmi_of_match, 852 .suppress_bind_attrs = true, 853 }, 854 }; 855