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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
39static 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
53static 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
63static 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
102static 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
126err_runtime_get:
127 regulator_disable(hdmi->vdda_reg);
128err_reg_enable:
129 hdmi->core.core_pwr_cnt--;
130
131 return r;
132}
133
134static 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
145static 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
214err_vid_enable:
215 dss_mgr_disable(&hdmi->output);
216err_mgr_enable:
217 hdmi_wp_set_phy_pwr(&hdmi->wp, HDMI_PHYPWRCMD_OFF);
218err_phy_pwr:
219err_phy_cfg:
220err_pll_cfg:
221 dss_pll_disable(&hdmi->pll.pll);
222err_pll_enable:
223 hdmi_power_off_core(hdmi);
224 return -EIO;
225}
226
227static 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
242static 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
263static 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
269static 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
275int 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
293err0:
294 mutex_unlock(&hdmi->lock);
295 return r;
296}
297
298void 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
315static 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
327static 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
342static 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
407done:
408 mutex_unlock(&hdmi->lock);
409}
410
411static 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
429static 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
438static 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
465done:
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
485static 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
497static 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
507static void hdmi4_bridge_cleanup(struct omap_hdmi *hdmi)
508{
509 drm_bridge_remove(&hdmi->bridge);
510}
511
512/* -----------------------------------------------------------------------------
513 * Audio Callbacks
514 */
515
516static 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
532static 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
545static 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
564static 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
580static 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;
597out:
598 mutex_unlock(&hd->lock);
599
600 return ret;
601}
602
603static 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
611static 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
634static 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
667err_cec_uninit:
668 hdmi4_cec_uninit(&hdmi->core);
669err_pll_uninit:
670 hdmi_pll_uninit(&hdmi->pll);
671err_runtime_put:
672 hdmi_runtime_put(hdmi);
673 return r;
674}
675
676static 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
689static 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
698static 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->of_port = 0;
711
712 r = omapdss_device_init_output(out, &hdmi->bridge);
713 if (r < 0) {
714 hdmi4_bridge_cleanup(hdmi);
715 return r;
716 }
717
718 omapdss_device_register(out);
719
720 return 0;
721}
722
723static void hdmi4_uninit_output(struct omap_hdmi *hdmi)
724{
725 struct omap_dss_device *out = &hdmi->output;
726
727 omapdss_device_unregister(out);
728 omapdss_device_cleanup_output(out);
729
730 hdmi4_bridge_cleanup(hdmi);
731}
732
733static int hdmi4_probe_of(struct omap_hdmi *hdmi)
734{
735 struct platform_device *pdev = hdmi->pdev;
736 struct device_node *node = pdev->dev.of_node;
737 struct device_node *ep;
738 int r;
739
740 ep = of_graph_get_endpoint_by_regs(node, 0, 0);
741 if (!ep)
742 return 0;
743
744 r = hdmi_parse_lanes_of(pdev, ep, &hdmi->phy);
745 of_node_put(ep);
746 return r;
747}
748
749static int hdmi4_probe(struct platform_device *pdev)
750{
751 struct omap_hdmi *hdmi;
752 int irq;
753 int r;
754
755 hdmi = kzalloc(sizeof(*hdmi), GFP_KERNEL);
756 if (!hdmi)
757 return -ENOMEM;
758
759 hdmi->pdev = pdev;
760
761 dev_set_drvdata(&pdev->dev, hdmi);
762
763 mutex_init(&hdmi->lock);
764 spin_lock_init(&hdmi->audio_playing_lock);
765
766 r = hdmi4_probe_of(hdmi);
767 if (r)
768 goto err_free;
769
770 r = hdmi_wp_init(pdev, &hdmi->wp, 4);
771 if (r)
772 goto err_free;
773
774 r = hdmi_phy_init(pdev, &hdmi->phy, 4);
775 if (r)
776 goto err_free;
777
778 r = hdmi4_core_init(pdev, &hdmi->core);
779 if (r)
780 goto err_free;
781
782 irq = platform_get_irq(pdev, 0);
783 if (irq < 0) {
784 DSSERR("platform_get_irq failed\n");
785 r = -ENODEV;
786 goto err_free;
787 }
788
789 r = devm_request_threaded_irq(&pdev->dev, irq,
790 NULL, hdmi_irq_handler,
791 IRQF_ONESHOT, "OMAP HDMI", hdmi);
792 if (r) {
793 DSSERR("HDMI IRQ request failed\n");
794 goto err_free;
795 }
796
797 hdmi->vdda_reg = devm_regulator_get(&pdev->dev, "vdda");
798 if (IS_ERR(hdmi->vdda_reg)) {
799 r = PTR_ERR(hdmi->vdda_reg);
800 if (r != -EPROBE_DEFER)
801 DSSERR("can't get VDDA regulator\n");
802 goto err_free;
803 }
804
805 pm_runtime_enable(&pdev->dev);
806
807 r = hdmi4_init_output(hdmi);
808 if (r)
809 goto err_pm_disable;
810
811 r = component_add(&pdev->dev, &hdmi4_component_ops);
812 if (r)
813 goto err_uninit_output;
814
815 return 0;
816
817err_uninit_output:
818 hdmi4_uninit_output(hdmi);
819err_pm_disable:
820 pm_runtime_disable(&pdev->dev);
821err_free:
822 kfree(hdmi);
823 return r;
824}
825
826static int hdmi4_remove(struct platform_device *pdev)
827{
828 struct omap_hdmi *hdmi = platform_get_drvdata(pdev);
829
830 component_del(&pdev->dev, &hdmi4_component_ops);
831
832 hdmi4_uninit_output(hdmi);
833
834 pm_runtime_disable(&pdev->dev);
835
836 kfree(hdmi);
837 return 0;
838}
839
840static const struct of_device_id hdmi_of_match[] = {
841 { .compatible = "ti,omap4-hdmi", },
842 {},
843};
844
845struct platform_driver omapdss_hdmi4hw_driver = {
846 .probe = hdmi4_probe,
847 .remove = hdmi4_remove,
848 .driver = {
849 .name = "omapdss_hdmi",
850 .of_match_table = hdmi_of_match,
851 .suppress_bind_attrs = true,
852 },
853};