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_atomic_state *state) 345 { 346 struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge); 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_atomic_state *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 const struct drm_edid *hdmi4_bridge_edid_read(struct drm_bridge *bridge, 439 struct drm_connector *connector) 440 { 441 struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge); 442 const struct drm_edid *drm_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 drm_edid = drm_edid_read_custom(connector, hdmi4_core_ddc_read, &hdmi->core); 464 465 done: 466 hdmi_runtime_put(hdmi); 467 mutex_unlock(&hdmi->lock); 468 469 if (drm_edid) { 470 /* 471 * FIXME: The CEC physical address should be set using 472 * hdmi4_cec_set_phys_addr(&hdmi->core, 473 * connector->display_info.source_physical_address) from a path 474 * that has read the EDID and called 475 * drm_edid_connector_update(). 476 */ 477 const struct edid *edid = drm_edid_raw(drm_edid); 478 unsigned int len = (edid->extensions + 1) * EDID_LENGTH; 479 480 cec_addr = cec_get_edid_phys_addr((u8 *)edid, len, NULL); 481 } else { 482 cec_addr = CEC_PHYS_ADDR_INVALID; 483 } 484 485 hdmi4_cec_set_phys_addr(&hdmi->core, cec_addr); 486 487 if (need_enable) 488 hdmi4_core_disable(&hdmi->core); 489 490 return drm_edid; 491 } 492 493 static const struct drm_bridge_funcs hdmi4_bridge_funcs = { 494 .attach = hdmi4_bridge_attach, 495 .mode_set = hdmi4_bridge_mode_set, 496 .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state, 497 .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state, 498 .atomic_reset = drm_atomic_helper_bridge_reset, 499 .atomic_enable = hdmi4_bridge_enable, 500 .atomic_disable = hdmi4_bridge_disable, 501 .hpd_notify = hdmi4_bridge_hpd_notify, 502 .edid_read = hdmi4_bridge_edid_read, 503 }; 504 505 static void hdmi4_bridge_init(struct omap_hdmi *hdmi) 506 { 507 hdmi->bridge.funcs = &hdmi4_bridge_funcs; 508 hdmi->bridge.of_node = hdmi->pdev->dev.of_node; 509 hdmi->bridge.ops = DRM_BRIDGE_OP_EDID; 510 hdmi->bridge.type = DRM_MODE_CONNECTOR_HDMIA; 511 512 drm_bridge_add(&hdmi->bridge); 513 } 514 515 static void hdmi4_bridge_cleanup(struct omap_hdmi *hdmi) 516 { 517 drm_bridge_remove(&hdmi->bridge); 518 } 519 520 /* ----------------------------------------------------------------------------- 521 * Audio Callbacks 522 */ 523 524 static int hdmi_audio_startup(struct device *dev, 525 void (*abort_cb)(struct device *dev)) 526 { 527 struct omap_hdmi *hd = dev_get_drvdata(dev); 528 529 mutex_lock(&hd->lock); 530 531 WARN_ON(hd->audio_abort_cb != NULL); 532 533 hd->audio_abort_cb = abort_cb; 534 535 mutex_unlock(&hd->lock); 536 537 return 0; 538 } 539 540 static int hdmi_audio_shutdown(struct device *dev) 541 { 542 struct omap_hdmi *hd = dev_get_drvdata(dev); 543 544 mutex_lock(&hd->lock); 545 hd->audio_abort_cb = NULL; 546 hd->audio_configured = false; 547 hd->audio_playing = false; 548 mutex_unlock(&hd->lock); 549 550 return 0; 551 } 552 553 static int hdmi_audio_start(struct device *dev) 554 { 555 struct omap_hdmi *hd = dev_get_drvdata(dev); 556 unsigned long flags; 557 558 spin_lock_irqsave(&hd->audio_playing_lock, flags); 559 560 if (hd->display_enabled) { 561 if (!hdmi_mode_has_audio(&hd->cfg)) 562 DSSERR("%s: Video mode does not support audio\n", 563 __func__); 564 hdmi_start_audio_stream(hd); 565 } 566 hd->audio_playing = true; 567 568 spin_unlock_irqrestore(&hd->audio_playing_lock, flags); 569 return 0; 570 } 571 572 static void hdmi_audio_stop(struct device *dev) 573 { 574 struct omap_hdmi *hd = dev_get_drvdata(dev); 575 unsigned long flags; 576 577 WARN_ON(!hdmi_mode_has_audio(&hd->cfg)); 578 579 spin_lock_irqsave(&hd->audio_playing_lock, flags); 580 581 if (hd->display_enabled) 582 hdmi_stop_audio_stream(hd); 583 hd->audio_playing = false; 584 585 spin_unlock_irqrestore(&hd->audio_playing_lock, flags); 586 } 587 588 static int hdmi_audio_config(struct device *dev, 589 struct omap_dss_audio *dss_audio) 590 { 591 struct omap_hdmi *hd = dev_get_drvdata(dev); 592 int ret = 0; 593 594 mutex_lock(&hd->lock); 595 596 if (hd->display_enabled) { 597 ret = hdmi4_audio_config(&hd->core, &hd->wp, dss_audio, 598 hd->cfg.vm.pixelclock); 599 if (ret) 600 goto out; 601 } 602 603 hd->audio_configured = true; 604 hd->audio_config = *dss_audio; 605 out: 606 mutex_unlock(&hd->lock); 607 608 return ret; 609 } 610 611 static const struct omap_hdmi_audio_ops hdmi_audio_ops = { 612 .audio_startup = hdmi_audio_startup, 613 .audio_shutdown = hdmi_audio_shutdown, 614 .audio_start = hdmi_audio_start, 615 .audio_stop = hdmi_audio_stop, 616 .audio_config = hdmi_audio_config, 617 }; 618 619 static int hdmi_audio_register(struct omap_hdmi *hdmi) 620 { 621 struct omap_hdmi_audio_pdata pdata = { 622 .dev = &hdmi->pdev->dev, 623 .version = 4, 624 .audio_dma_addr = hdmi_wp_get_audio_dma_addr(&hdmi->wp), 625 .ops = &hdmi_audio_ops, 626 }; 627 628 hdmi->audio_pdev = platform_device_register_data( 629 &hdmi->pdev->dev, "omap-hdmi-audio", PLATFORM_DEVID_AUTO, 630 &pdata, sizeof(pdata)); 631 632 if (IS_ERR(hdmi->audio_pdev)) 633 return PTR_ERR(hdmi->audio_pdev); 634 635 return 0; 636 } 637 638 /* ----------------------------------------------------------------------------- 639 * Component Bind & Unbind 640 */ 641 642 static int hdmi4_bind(struct device *dev, struct device *master, void *data) 643 { 644 struct dss_device *dss = dss_get_device(master); 645 struct omap_hdmi *hdmi = dev_get_drvdata(dev); 646 int r; 647 648 hdmi->dss = dss; 649 650 r = hdmi_runtime_get(hdmi); 651 if (r) 652 return r; 653 654 r = hdmi_pll_init(dss, hdmi->pdev, &hdmi->pll, &hdmi->wp); 655 if (r) 656 goto err_runtime_put; 657 658 r = hdmi4_cec_init(hdmi->pdev, &hdmi->core, &hdmi->wp); 659 if (r) 660 goto err_pll_uninit; 661 662 r = hdmi_audio_register(hdmi); 663 if (r) { 664 DSSERR("Registering HDMI audio failed\n"); 665 goto err_cec_uninit; 666 } 667 668 hdmi->debugfs = dss_debugfs_create_file(dss, "hdmi", hdmi_dump_regs, 669 hdmi); 670 671 hdmi_runtime_put(hdmi); 672 673 return 0; 674 675 err_cec_uninit: 676 hdmi4_cec_uninit(&hdmi->core); 677 err_pll_uninit: 678 hdmi_pll_uninit(&hdmi->pll); 679 err_runtime_put: 680 hdmi_runtime_put(hdmi); 681 return r; 682 } 683 684 static void hdmi4_unbind(struct device *dev, struct device *master, void *data) 685 { 686 struct omap_hdmi *hdmi = dev_get_drvdata(dev); 687 688 dss_debugfs_remove_file(hdmi->debugfs); 689 690 if (hdmi->audio_pdev) 691 platform_device_unregister(hdmi->audio_pdev); 692 693 hdmi4_cec_uninit(&hdmi->core); 694 hdmi_pll_uninit(&hdmi->pll); 695 } 696 697 static const struct component_ops hdmi4_component_ops = { 698 .bind = hdmi4_bind, 699 .unbind = hdmi4_unbind, 700 }; 701 702 /* ----------------------------------------------------------------------------- 703 * Probe & Remove, Suspend & Resume 704 */ 705 706 static int hdmi4_init_output(struct omap_hdmi *hdmi) 707 { 708 struct omap_dss_device *out = &hdmi->output; 709 int r; 710 711 hdmi4_bridge_init(hdmi); 712 713 out->dev = &hdmi->pdev->dev; 714 out->id = OMAP_DSS_OUTPUT_HDMI; 715 out->type = OMAP_DISPLAY_TYPE_HDMI; 716 out->name = "hdmi.0"; 717 out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT; 718 out->of_port = 0; 719 720 r = omapdss_device_init_output(out, &hdmi->bridge); 721 if (r < 0) { 722 hdmi4_bridge_cleanup(hdmi); 723 return r; 724 } 725 726 omapdss_device_register(out); 727 728 return 0; 729 } 730 731 static void hdmi4_uninit_output(struct omap_hdmi *hdmi) 732 { 733 struct omap_dss_device *out = &hdmi->output; 734 735 omapdss_device_unregister(out); 736 omapdss_device_cleanup_output(out); 737 738 hdmi4_bridge_cleanup(hdmi); 739 } 740 741 static int hdmi4_probe_of(struct omap_hdmi *hdmi) 742 { 743 struct platform_device *pdev = hdmi->pdev; 744 struct device_node *node = pdev->dev.of_node; 745 struct device_node *ep; 746 int r; 747 748 ep = of_graph_get_endpoint_by_regs(node, 0, 0); 749 if (!ep) 750 return 0; 751 752 r = hdmi_parse_lanes_of(pdev, ep, &hdmi->phy); 753 of_node_put(ep); 754 return r; 755 } 756 757 static int hdmi4_probe(struct platform_device *pdev) 758 { 759 struct omap_hdmi *hdmi; 760 int irq; 761 int r; 762 763 hdmi = kzalloc(sizeof(*hdmi), GFP_KERNEL); 764 if (!hdmi) 765 return -ENOMEM; 766 767 hdmi->pdev = pdev; 768 769 dev_set_drvdata(&pdev->dev, hdmi); 770 771 mutex_init(&hdmi->lock); 772 spin_lock_init(&hdmi->audio_playing_lock); 773 774 r = hdmi4_probe_of(hdmi); 775 if (r) 776 goto err_free; 777 778 r = hdmi_wp_init(pdev, &hdmi->wp, 4); 779 if (r) 780 goto err_free; 781 782 r = hdmi_phy_init(pdev, &hdmi->phy, 4); 783 if (r) 784 goto err_free; 785 786 r = hdmi4_core_init(pdev, &hdmi->core); 787 if (r) 788 goto err_free; 789 790 irq = platform_get_irq(pdev, 0); 791 if (irq < 0) { 792 DSSERR("platform_get_irq failed\n"); 793 r = -ENODEV; 794 goto err_free; 795 } 796 797 r = devm_request_threaded_irq(&pdev->dev, irq, 798 NULL, hdmi_irq_handler, 799 IRQF_ONESHOT, "OMAP HDMI", hdmi); 800 if (r) { 801 DSSERR("HDMI IRQ request failed\n"); 802 goto err_free; 803 } 804 805 hdmi->vdda_reg = devm_regulator_get(&pdev->dev, "vdda"); 806 if (IS_ERR(hdmi->vdda_reg)) { 807 r = PTR_ERR(hdmi->vdda_reg); 808 if (r != -EPROBE_DEFER) 809 DSSERR("can't get VDDA regulator\n"); 810 goto err_free; 811 } 812 813 pm_runtime_enable(&pdev->dev); 814 815 r = hdmi4_init_output(hdmi); 816 if (r) 817 goto err_pm_disable; 818 819 r = component_add(&pdev->dev, &hdmi4_component_ops); 820 if (r) 821 goto err_uninit_output; 822 823 return 0; 824 825 err_uninit_output: 826 hdmi4_uninit_output(hdmi); 827 err_pm_disable: 828 pm_runtime_disable(&pdev->dev); 829 err_free: 830 kfree(hdmi); 831 return r; 832 } 833 834 static void hdmi4_remove(struct platform_device *pdev) 835 { 836 struct omap_hdmi *hdmi = platform_get_drvdata(pdev); 837 838 component_del(&pdev->dev, &hdmi4_component_ops); 839 840 hdmi4_uninit_output(hdmi); 841 842 pm_runtime_disable(&pdev->dev); 843 844 kfree(hdmi); 845 } 846 847 static const struct of_device_id hdmi_of_match[] = { 848 { .compatible = "ti,omap4-hdmi", }, 849 {}, 850 }; 851 852 struct platform_driver omapdss_hdmi4hw_driver = { 853 .probe = hdmi4_probe, 854 .remove = hdmi4_remove, 855 .driver = { 856 .name = "omapdss_hdmi", 857 .of_match_table = hdmi_of_match, 858 .suppress_bind_attrs = true, 859 }, 860 }; 861