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 #include <drm/drm_edid.h> 33 34 #include "omapdss.h" 35 #include "hdmi4_core.h" 36 #include "hdmi4_cec.h" 37 #include "dss.h" 38 #include "hdmi.h" 39 40 static int hdmi_runtime_get(struct omap_hdmi *hdmi) 41 { 42 int r; 43 44 DSSDBG("hdmi_runtime_get\n"); 45 46 r = pm_runtime_get_sync(&hdmi->pdev->dev); 47 if (WARN_ON(r < 0)) { 48 pm_runtime_put_noidle(&hdmi->pdev->dev); 49 return r; 50 } 51 return 0; 52 } 53 54 static void hdmi_runtime_put(struct omap_hdmi *hdmi) 55 { 56 int r; 57 58 DSSDBG("hdmi_runtime_put\n"); 59 60 r = pm_runtime_put_sync(&hdmi->pdev->dev); 61 WARN_ON(r < 0 && r != -ENOSYS); 62 } 63 64 static irqreturn_t hdmi_irq_handler(int irq, void *data) 65 { 66 struct omap_hdmi *hdmi = data; 67 struct hdmi_wp_data *wp = &hdmi->wp; 68 u32 irqstatus; 69 70 irqstatus = hdmi_wp_get_irqstatus(wp); 71 hdmi_wp_set_irqstatus(wp, irqstatus); 72 73 if ((irqstatus & HDMI_IRQ_LINK_CONNECT) && 74 irqstatus & HDMI_IRQ_LINK_DISCONNECT) { 75 /* 76 * If we get both connect and disconnect interrupts at the same 77 * time, turn off the PHY, clear interrupts, and restart, which 78 * raises connect interrupt if a cable is connected, or nothing 79 * if cable is not connected. 80 */ 81 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_OFF); 82 83 hdmi_wp_set_irqstatus(wp, HDMI_IRQ_LINK_CONNECT | 84 HDMI_IRQ_LINK_DISCONNECT); 85 86 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON); 87 } else if (irqstatus & HDMI_IRQ_LINK_CONNECT) { 88 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_TXON); 89 } else if (irqstatus & HDMI_IRQ_LINK_DISCONNECT) { 90 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON); 91 } 92 if (irqstatus & HDMI_IRQ_CORE) { 93 u32 intr4 = hdmi_read_reg(hdmi->core.base, HDMI_CORE_SYS_INTR4); 94 95 hdmi_write_reg(hdmi->core.base, HDMI_CORE_SYS_INTR4, intr4); 96 if (intr4 & 8) 97 hdmi4_cec_irq(&hdmi->core); 98 } 99 100 return IRQ_HANDLED; 101 } 102 103 static int hdmi_power_on_core(struct omap_hdmi *hdmi) 104 { 105 int r; 106 107 if (hdmi->core.core_pwr_cnt++) 108 return 0; 109 110 r = regulator_enable(hdmi->vdda_reg); 111 if (r) 112 goto err_reg_enable; 113 114 r = hdmi_runtime_get(hdmi); 115 if (r) 116 goto err_runtime_get; 117 118 hdmi4_core_powerdown_disable(&hdmi->core); 119 120 /* Make selection of HDMI in DSS */ 121 dss_select_hdmi_venc_clk_source(hdmi->dss, DSS_HDMI_M_PCLK); 122 123 hdmi->core_enabled = true; 124 125 return 0; 126 127 err_runtime_get: 128 regulator_disable(hdmi->vdda_reg); 129 err_reg_enable: 130 hdmi->core.core_pwr_cnt--; 131 132 return r; 133 } 134 135 static void hdmi_power_off_core(struct omap_hdmi *hdmi) 136 { 137 if (--hdmi->core.core_pwr_cnt) 138 return; 139 140 hdmi->core_enabled = false; 141 142 hdmi_runtime_put(hdmi); 143 regulator_disable(hdmi->vdda_reg); 144 } 145 146 static int hdmi_power_on_full(struct omap_hdmi *hdmi) 147 { 148 int r; 149 const struct videomode *vm; 150 struct hdmi_wp_data *wp = &hdmi->wp; 151 struct dss_pll_clock_info hdmi_cinfo = { 0 }; 152 unsigned int pc; 153 154 r = hdmi_power_on_core(hdmi); 155 if (r) 156 return r; 157 158 /* disable and clear irqs */ 159 hdmi_wp_clear_irqenable(wp, ~HDMI_IRQ_CORE); 160 hdmi_wp_set_irqstatus(wp, ~HDMI_IRQ_CORE); 161 162 vm = &hdmi->cfg.vm; 163 164 DSSDBG("hdmi_power_on hactive= %d vactive = %d\n", vm->hactive, 165 vm->vactive); 166 167 pc = vm->pixelclock; 168 if (vm->flags & DISPLAY_FLAGS_DOUBLECLK) 169 pc *= 2; 170 171 /* DSS_HDMI_TCLK is bitclk / 10 */ 172 pc *= 10; 173 174 dss_pll_calc_b(&hdmi->pll.pll, clk_get_rate(hdmi->pll.pll.clkin), 175 pc, &hdmi_cinfo); 176 177 r = dss_pll_enable(&hdmi->pll.pll); 178 if (r) { 179 DSSERR("Failed to enable PLL\n"); 180 goto err_pll_enable; 181 } 182 183 r = dss_pll_set_config(&hdmi->pll.pll, &hdmi_cinfo); 184 if (r) { 185 DSSERR("Failed to configure PLL\n"); 186 goto err_pll_cfg; 187 } 188 189 r = hdmi_phy_configure(&hdmi->phy, hdmi_cinfo.clkdco, 190 hdmi_cinfo.clkout[0]); 191 if (r) { 192 DSSDBG("Failed to configure PHY\n"); 193 goto err_phy_cfg; 194 } 195 196 r = hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON); 197 if (r) 198 goto err_phy_pwr; 199 200 hdmi4_configure(&hdmi->core, &hdmi->wp, &hdmi->cfg); 201 202 r = dss_mgr_enable(&hdmi->output); 203 if (r) 204 goto err_mgr_enable; 205 206 r = hdmi_wp_video_start(&hdmi->wp); 207 if (r) 208 goto err_vid_enable; 209 210 hdmi_wp_set_irqenable(wp, 211 HDMI_IRQ_LINK_CONNECT | HDMI_IRQ_LINK_DISCONNECT); 212 213 return 0; 214 215 err_vid_enable: 216 dss_mgr_disable(&hdmi->output); 217 err_mgr_enable: 218 hdmi_wp_set_phy_pwr(&hdmi->wp, HDMI_PHYPWRCMD_OFF); 219 err_phy_pwr: 220 err_phy_cfg: 221 err_pll_cfg: 222 dss_pll_disable(&hdmi->pll.pll); 223 err_pll_enable: 224 hdmi_power_off_core(hdmi); 225 return -EIO; 226 } 227 228 static void hdmi_power_off_full(struct omap_hdmi *hdmi) 229 { 230 hdmi_wp_clear_irqenable(&hdmi->wp, ~HDMI_IRQ_CORE); 231 232 hdmi_wp_video_stop(&hdmi->wp); 233 234 dss_mgr_disable(&hdmi->output); 235 236 hdmi_wp_set_phy_pwr(&hdmi->wp, HDMI_PHYPWRCMD_OFF); 237 238 dss_pll_disable(&hdmi->pll.pll); 239 240 hdmi_power_off_core(hdmi); 241 } 242 243 static int hdmi_dump_regs(struct seq_file *s, void *p) 244 { 245 struct omap_hdmi *hdmi = s->private; 246 247 mutex_lock(&hdmi->lock); 248 249 if (hdmi_runtime_get(hdmi)) { 250 mutex_unlock(&hdmi->lock); 251 return 0; 252 } 253 254 hdmi_wp_dump(&hdmi->wp, s); 255 hdmi_pll_dump(&hdmi->pll, s); 256 hdmi_phy_dump(&hdmi->phy, s); 257 hdmi4_core_dump(&hdmi->core, s); 258 259 hdmi_runtime_put(hdmi); 260 mutex_unlock(&hdmi->lock); 261 return 0; 262 } 263 264 static void hdmi_start_audio_stream(struct omap_hdmi *hd) 265 { 266 hdmi_wp_audio_enable(&hd->wp, true); 267 hdmi4_audio_start(&hd->core, &hd->wp); 268 } 269 270 static void hdmi_stop_audio_stream(struct omap_hdmi *hd) 271 { 272 hdmi4_audio_stop(&hd->core, &hd->wp); 273 hdmi_wp_audio_enable(&hd->wp, false); 274 } 275 276 int hdmi4_core_enable(struct hdmi_core_data *core) 277 { 278 struct omap_hdmi *hdmi = container_of(core, struct omap_hdmi, core); 279 int r = 0; 280 281 DSSDBG("ENTER omapdss_hdmi4_core_enable\n"); 282 283 mutex_lock(&hdmi->lock); 284 285 r = hdmi_power_on_core(hdmi); 286 if (r) { 287 DSSERR("failed to power on device\n"); 288 goto err0; 289 } 290 291 mutex_unlock(&hdmi->lock); 292 return 0; 293 294 err0: 295 mutex_unlock(&hdmi->lock); 296 return r; 297 } 298 299 void hdmi4_core_disable(struct hdmi_core_data *core) 300 { 301 struct omap_hdmi *hdmi = container_of(core, struct omap_hdmi, core); 302 303 DSSDBG("Enter omapdss_hdmi4_core_disable\n"); 304 305 mutex_lock(&hdmi->lock); 306 307 hdmi_power_off_core(hdmi); 308 309 mutex_unlock(&hdmi->lock); 310 } 311 312 /* ----------------------------------------------------------------------------- 313 * DRM Bridge Operations 314 */ 315 316 static int hdmi4_bridge_attach(struct drm_bridge *bridge, 317 enum drm_bridge_attach_flags flags) 318 { 319 struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge); 320 321 if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) 322 return -EINVAL; 323 324 return drm_bridge_attach(bridge->encoder, hdmi->output.next_bridge, 325 bridge, flags); 326 } 327 328 static void hdmi4_bridge_mode_set(struct drm_bridge *bridge, 329 const struct drm_display_mode *mode, 330 const struct drm_display_mode *adjusted_mode) 331 { 332 struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge); 333 334 mutex_lock(&hdmi->lock); 335 336 drm_display_mode_to_videomode(adjusted_mode, &hdmi->cfg.vm); 337 338 dispc_set_tv_pclk(hdmi->dss->dispc, adjusted_mode->clock * 1000); 339 340 mutex_unlock(&hdmi->lock); 341 } 342 343 static void hdmi4_bridge_enable(struct drm_bridge *bridge, 344 struct drm_bridge_state *bridge_state) 345 { 346 struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge); 347 struct drm_atomic_state *state = bridge_state->base.state; 348 struct drm_connector_state *conn_state; 349 struct drm_connector *connector; 350 struct drm_crtc_state *crtc_state; 351 unsigned long flags; 352 int ret; 353 354 /* 355 * None of these should fail, as the bridge can't be enabled without a 356 * valid CRTC to connector path with fully populated new states. 357 */ 358 connector = drm_atomic_get_new_connector_for_encoder(state, 359 bridge->encoder); 360 if (WARN_ON(!connector)) 361 return; 362 conn_state = drm_atomic_get_new_connector_state(state, connector); 363 if (WARN_ON(!conn_state)) 364 return; 365 crtc_state = drm_atomic_get_new_crtc_state(state, conn_state->crtc); 366 if (WARN_ON(!crtc_state)) 367 return; 368 369 hdmi->cfg.hdmi_dvi_mode = connector->display_info.is_hdmi 370 ? HDMI_HDMI : HDMI_DVI; 371 372 if (connector->display_info.is_hdmi) { 373 const struct drm_display_mode *mode; 374 struct hdmi_avi_infoframe avi; 375 376 mode = &crtc_state->adjusted_mode; 377 ret = drm_hdmi_avi_infoframe_from_display_mode(&avi, connector, 378 mode); 379 if (ret == 0) 380 hdmi->cfg.infoframe = avi; 381 } 382 383 mutex_lock(&hdmi->lock); 384 385 ret = hdmi_power_on_full(hdmi); 386 if (ret) { 387 DSSERR("failed to power on device\n"); 388 goto done; 389 } 390 391 if (hdmi->audio_configured) { 392 ret = hdmi4_audio_config(&hdmi->core, &hdmi->wp, 393 &hdmi->audio_config, 394 hdmi->cfg.vm.pixelclock); 395 if (ret) { 396 DSSERR("Error restoring audio configuration: %d", ret); 397 hdmi->audio_abort_cb(&hdmi->pdev->dev); 398 hdmi->audio_configured = false; 399 } 400 } 401 402 spin_lock_irqsave(&hdmi->audio_playing_lock, flags); 403 if (hdmi->audio_configured && hdmi->audio_playing) 404 hdmi_start_audio_stream(hdmi); 405 hdmi->display_enabled = true; 406 spin_unlock_irqrestore(&hdmi->audio_playing_lock, flags); 407 408 done: 409 mutex_unlock(&hdmi->lock); 410 } 411 412 static void hdmi4_bridge_disable(struct drm_bridge *bridge, 413 struct drm_bridge_state *bridge_state) 414 { 415 struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge); 416 unsigned long flags; 417 418 mutex_lock(&hdmi->lock); 419 420 spin_lock_irqsave(&hdmi->audio_playing_lock, flags); 421 hdmi_stop_audio_stream(hdmi); 422 hdmi->display_enabled = false; 423 spin_unlock_irqrestore(&hdmi->audio_playing_lock, flags); 424 425 hdmi_power_off_full(hdmi); 426 427 mutex_unlock(&hdmi->lock); 428 } 429 430 static void hdmi4_bridge_hpd_notify(struct drm_bridge *bridge, 431 enum drm_connector_status status) 432 { 433 struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge); 434 435 if (status == connector_status_disconnected) 436 hdmi4_cec_set_phys_addr(&hdmi->core, CEC_PHYS_ADDR_INVALID); 437 } 438 439 static struct edid *hdmi4_bridge_get_edid(struct drm_bridge *bridge, 440 struct drm_connector *connector) 441 { 442 struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge); 443 struct edid *edid = NULL; 444 unsigned int cec_addr; 445 bool need_enable; 446 int r; 447 448 need_enable = hdmi->core_enabled == false; 449 450 if (need_enable) { 451 r = hdmi4_core_enable(&hdmi->core); 452 if (r) 453 return NULL; 454 } 455 456 mutex_lock(&hdmi->lock); 457 r = hdmi_runtime_get(hdmi); 458 BUG_ON(r); 459 460 r = hdmi4_core_ddc_init(&hdmi->core); 461 if (r) 462 goto done; 463 464 edid = drm_do_get_edid(connector, hdmi4_core_ddc_read, &hdmi->core); 465 466 done: 467 hdmi_runtime_put(hdmi); 468 mutex_unlock(&hdmi->lock); 469 470 if (edid && edid->extensions) { 471 unsigned int len = (edid->extensions + 1) * EDID_LENGTH; 472 473 cec_addr = cec_get_edid_phys_addr((u8 *)edid, len, NULL); 474 } else { 475 cec_addr = CEC_PHYS_ADDR_INVALID; 476 } 477 478 hdmi4_cec_set_phys_addr(&hdmi->core, cec_addr); 479 480 if (need_enable) 481 hdmi4_core_disable(&hdmi->core); 482 483 return edid; 484 } 485 486 static const struct drm_bridge_funcs hdmi4_bridge_funcs = { 487 .attach = hdmi4_bridge_attach, 488 .mode_set = hdmi4_bridge_mode_set, 489 .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state, 490 .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state, 491 .atomic_reset = drm_atomic_helper_bridge_reset, 492 .atomic_enable = hdmi4_bridge_enable, 493 .atomic_disable = hdmi4_bridge_disable, 494 .hpd_notify = hdmi4_bridge_hpd_notify, 495 .get_edid = hdmi4_bridge_get_edid, 496 }; 497 498 static void hdmi4_bridge_init(struct omap_hdmi *hdmi) 499 { 500 hdmi->bridge.funcs = &hdmi4_bridge_funcs; 501 hdmi->bridge.of_node = hdmi->pdev->dev.of_node; 502 hdmi->bridge.ops = DRM_BRIDGE_OP_EDID; 503 hdmi->bridge.type = DRM_MODE_CONNECTOR_HDMIA; 504 505 drm_bridge_add(&hdmi->bridge); 506 } 507 508 static void hdmi4_bridge_cleanup(struct omap_hdmi *hdmi) 509 { 510 drm_bridge_remove(&hdmi->bridge); 511 } 512 513 /* ----------------------------------------------------------------------------- 514 * Audio Callbacks 515 */ 516 517 static int hdmi_audio_startup(struct device *dev, 518 void (*abort_cb)(struct device *dev)) 519 { 520 struct omap_hdmi *hd = dev_get_drvdata(dev); 521 522 mutex_lock(&hd->lock); 523 524 WARN_ON(hd->audio_abort_cb != NULL); 525 526 hd->audio_abort_cb = abort_cb; 527 528 mutex_unlock(&hd->lock); 529 530 return 0; 531 } 532 533 static int hdmi_audio_shutdown(struct device *dev) 534 { 535 struct omap_hdmi *hd = dev_get_drvdata(dev); 536 537 mutex_lock(&hd->lock); 538 hd->audio_abort_cb = NULL; 539 hd->audio_configured = false; 540 hd->audio_playing = false; 541 mutex_unlock(&hd->lock); 542 543 return 0; 544 } 545 546 static int hdmi_audio_start(struct device *dev) 547 { 548 struct omap_hdmi *hd = dev_get_drvdata(dev); 549 unsigned long flags; 550 551 spin_lock_irqsave(&hd->audio_playing_lock, flags); 552 553 if (hd->display_enabled) { 554 if (!hdmi_mode_has_audio(&hd->cfg)) 555 DSSERR("%s: Video mode does not support audio\n", 556 __func__); 557 hdmi_start_audio_stream(hd); 558 } 559 hd->audio_playing = true; 560 561 spin_unlock_irqrestore(&hd->audio_playing_lock, flags); 562 return 0; 563 } 564 565 static void hdmi_audio_stop(struct device *dev) 566 { 567 struct omap_hdmi *hd = dev_get_drvdata(dev); 568 unsigned long flags; 569 570 WARN_ON(!hdmi_mode_has_audio(&hd->cfg)); 571 572 spin_lock_irqsave(&hd->audio_playing_lock, flags); 573 574 if (hd->display_enabled) 575 hdmi_stop_audio_stream(hd); 576 hd->audio_playing = false; 577 578 spin_unlock_irqrestore(&hd->audio_playing_lock, flags); 579 } 580 581 static int hdmi_audio_config(struct device *dev, 582 struct omap_dss_audio *dss_audio) 583 { 584 struct omap_hdmi *hd = dev_get_drvdata(dev); 585 int ret = 0; 586 587 mutex_lock(&hd->lock); 588 589 if (hd->display_enabled) { 590 ret = hdmi4_audio_config(&hd->core, &hd->wp, dss_audio, 591 hd->cfg.vm.pixelclock); 592 if (ret) 593 goto out; 594 } 595 596 hd->audio_configured = true; 597 hd->audio_config = *dss_audio; 598 out: 599 mutex_unlock(&hd->lock); 600 601 return ret; 602 } 603 604 static const struct omap_hdmi_audio_ops hdmi_audio_ops = { 605 .audio_startup = hdmi_audio_startup, 606 .audio_shutdown = hdmi_audio_shutdown, 607 .audio_start = hdmi_audio_start, 608 .audio_stop = hdmi_audio_stop, 609 .audio_config = hdmi_audio_config, 610 }; 611 612 static int hdmi_audio_register(struct omap_hdmi *hdmi) 613 { 614 struct omap_hdmi_audio_pdata pdata = { 615 .dev = &hdmi->pdev->dev, 616 .version = 4, 617 .audio_dma_addr = hdmi_wp_get_audio_dma_addr(&hdmi->wp), 618 .ops = &hdmi_audio_ops, 619 }; 620 621 hdmi->audio_pdev = platform_device_register_data( 622 &hdmi->pdev->dev, "omap-hdmi-audio", PLATFORM_DEVID_AUTO, 623 &pdata, sizeof(pdata)); 624 625 if (IS_ERR(hdmi->audio_pdev)) 626 return PTR_ERR(hdmi->audio_pdev); 627 628 return 0; 629 } 630 631 /* ----------------------------------------------------------------------------- 632 * Component Bind & Unbind 633 */ 634 635 static int hdmi4_bind(struct device *dev, struct device *master, void *data) 636 { 637 struct dss_device *dss = dss_get_device(master); 638 struct omap_hdmi *hdmi = dev_get_drvdata(dev); 639 int r; 640 641 hdmi->dss = dss; 642 643 r = hdmi_runtime_get(hdmi); 644 if (r) 645 return r; 646 647 r = hdmi_pll_init(dss, hdmi->pdev, &hdmi->pll, &hdmi->wp); 648 if (r) 649 goto err_runtime_put; 650 651 r = hdmi4_cec_init(hdmi->pdev, &hdmi->core, &hdmi->wp); 652 if (r) 653 goto err_pll_uninit; 654 655 r = hdmi_audio_register(hdmi); 656 if (r) { 657 DSSERR("Registering HDMI audio failed\n"); 658 goto err_cec_uninit; 659 } 660 661 hdmi->debugfs = dss_debugfs_create_file(dss, "hdmi", hdmi_dump_regs, 662 hdmi); 663 664 hdmi_runtime_put(hdmi); 665 666 return 0; 667 668 err_cec_uninit: 669 hdmi4_cec_uninit(&hdmi->core); 670 err_pll_uninit: 671 hdmi_pll_uninit(&hdmi->pll); 672 err_runtime_put: 673 hdmi_runtime_put(hdmi); 674 return r; 675 } 676 677 static void hdmi4_unbind(struct device *dev, struct device *master, void *data) 678 { 679 struct omap_hdmi *hdmi = dev_get_drvdata(dev); 680 681 dss_debugfs_remove_file(hdmi->debugfs); 682 683 if (hdmi->audio_pdev) 684 platform_device_unregister(hdmi->audio_pdev); 685 686 hdmi4_cec_uninit(&hdmi->core); 687 hdmi_pll_uninit(&hdmi->pll); 688 } 689 690 static const struct component_ops hdmi4_component_ops = { 691 .bind = hdmi4_bind, 692 .unbind = hdmi4_unbind, 693 }; 694 695 /* ----------------------------------------------------------------------------- 696 * Probe & Remove, Suspend & Resume 697 */ 698 699 static int hdmi4_init_output(struct omap_hdmi *hdmi) 700 { 701 struct omap_dss_device *out = &hdmi->output; 702 int r; 703 704 hdmi4_bridge_init(hdmi); 705 706 out->dev = &hdmi->pdev->dev; 707 out->id = OMAP_DSS_OUTPUT_HDMI; 708 out->type = OMAP_DISPLAY_TYPE_HDMI; 709 out->name = "hdmi.0"; 710 out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT; 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 void 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 } 839 840 static const struct of_device_id hdmi_of_match[] = { 841 { .compatible = "ti,omap4-hdmi", }, 842 {}, 843 }; 844 845 struct platform_driver omapdss_hdmi4hw_driver = { 846 .probe = hdmi4_probe, 847 .remove_new = hdmi4_remove, 848 .driver = { 849 .name = "omapdss_hdmi", 850 .of_match_table = hdmi_of_match, 851 .suppress_bind_attrs = true, 852 }, 853 }; 854