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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 <video/omapdss.h>
37#include <sound/omap-hdmi-audio.h>
38
39#include "hdmi4_core.h"
40#include "dss.h"
41#include "dss_features.h"
42#include "hdmi.h"
43
44static struct omap_hdmi hdmi;
45
46static int hdmi_runtime_get(void)
47{
48 int r;
49
50 DSSDBG("hdmi_runtime_get\n");
51
52 r = pm_runtime_get_sync(&hdmi.pdev->dev);
53 WARN_ON(r < 0);
54 if (r < 0)
55 return r;
56
57 return 0;
58}
59
60static void hdmi_runtime_put(void)
61{
62 int r;
63
64 DSSDBG("hdmi_runtime_put\n");
65
66 r = pm_runtime_put_sync(&hdmi.pdev->dev);
67 WARN_ON(r < 0 && r != -ENOSYS);
68}
69
70static irqreturn_t hdmi_irq_handler(int irq, void *data)
71{
72 struct hdmi_wp_data *wp = data;
73 u32 irqstatus;
74
75 irqstatus = hdmi_wp_get_irqstatus(wp);
76 hdmi_wp_set_irqstatus(wp, irqstatus);
77
78 if ((irqstatus & HDMI_IRQ_LINK_CONNECT) &&
79 irqstatus & HDMI_IRQ_LINK_DISCONNECT) {
80 /*
81 * If we get both connect and disconnect interrupts at the same
82 * time, turn off the PHY, clear interrupts, and restart, which
83 * raises connect interrupt if a cable is connected, or nothing
84 * if cable is not connected.
85 */
86 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_OFF);
87
88 hdmi_wp_set_irqstatus(wp, HDMI_IRQ_LINK_CONNECT |
89 HDMI_IRQ_LINK_DISCONNECT);
90
91 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
92 } else if (irqstatus & HDMI_IRQ_LINK_CONNECT) {
93 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_TXON);
94 } else if (irqstatus & HDMI_IRQ_LINK_DISCONNECT) {
95 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
96 }
97
98 return IRQ_HANDLED;
99}
100
101static int hdmi_init_regulator(void)
102{
103 int r;
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 if (regulator_can_change_voltage(reg)) {
118 r = regulator_set_voltage(reg, 1800000, 1800000);
119 if (r) {
120 devm_regulator_put(reg);
121 DSSWARN("can't set the regulator voltage\n");
122 return r;
123 }
124 }
125
126 hdmi.vdda_reg = reg;
127
128 return 0;
129}
130
131static int hdmi_power_on_core(struct omap_dss_device *dssdev)
132{
133 int r;
134
135 r = regulator_enable(hdmi.vdda_reg);
136 if (r)
137 return r;
138
139 r = hdmi_runtime_get();
140 if (r)
141 goto err_runtime_get;
142
143 /* Make selection of HDMI in DSS */
144 dss_select_hdmi_venc_clk_source(DSS_HDMI_M_PCLK);
145
146 hdmi.core_enabled = true;
147
148 return 0;
149
150err_runtime_get:
151 regulator_disable(hdmi.vdda_reg);
152
153 return r;
154}
155
156static void hdmi_power_off_core(struct omap_dss_device *dssdev)
157{
158 hdmi.core_enabled = false;
159
160 hdmi_runtime_put();
161 regulator_disable(hdmi.vdda_reg);
162}
163
164static int hdmi_power_on_full(struct omap_dss_device *dssdev)
165{
166 int r;
167 struct omap_video_timings *p;
168 enum omap_channel channel = dssdev->dispc_channel;
169 struct hdmi_wp_data *wp = &hdmi.wp;
170 struct dss_pll_clock_info hdmi_cinfo = { 0 };
171 unsigned pc;
172
173 r = hdmi_power_on_core(dssdev);
174 if (r)
175 return r;
176
177 /* disable and clear irqs */
178 hdmi_wp_clear_irqenable(wp, 0xffffffff);
179 hdmi_wp_set_irqstatus(wp, 0xffffffff);
180
181 p = &hdmi.cfg.timings;
182
183 DSSDBG("hdmi_power_on x_res= %d y_res = %d\n", p->x_res, p->y_res);
184
185 pc = p->pixelclock;
186 if (p->double_pixel)
187 pc *= 2;
188
189 hdmi_pll_compute(&hdmi.pll, pc, &hdmi_cinfo);
190
191 r = dss_pll_enable(&hdmi.pll.pll);
192 if (r) {
193 DSSERR("Failed to enable PLL\n");
194 goto err_pll_enable;
195 }
196
197 r = dss_pll_set_config(&hdmi.pll.pll, &hdmi_cinfo);
198 if (r) {
199 DSSERR("Failed to configure PLL\n");
200 goto err_pll_cfg;
201 }
202
203 r = hdmi_phy_configure(&hdmi.phy, hdmi_cinfo.clkdco,
204 hdmi_cinfo.clkout[0]);
205 if (r) {
206 DSSDBG("Failed to configure PHY\n");
207 goto err_phy_cfg;
208 }
209
210 r = hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
211 if (r)
212 goto err_phy_pwr;
213
214 hdmi4_configure(&hdmi.core, &hdmi.wp, &hdmi.cfg);
215
216 /* bypass TV gamma table */
217 dispc_enable_gamma_table(0);
218
219 /* tv size */
220 dss_mgr_set_timings(channel, p);
221
222 r = dss_mgr_enable(channel);
223 if (r)
224 goto err_mgr_enable;
225
226 r = hdmi_wp_video_start(&hdmi.wp);
227 if (r)
228 goto err_vid_enable;
229
230 hdmi_wp_set_irqenable(wp,
231 HDMI_IRQ_LINK_CONNECT | HDMI_IRQ_LINK_DISCONNECT);
232
233 return 0;
234
235err_vid_enable:
236 dss_mgr_disable(channel);
237err_mgr_enable:
238 hdmi_wp_set_phy_pwr(&hdmi.wp, HDMI_PHYPWRCMD_OFF);
239err_phy_pwr:
240err_phy_cfg:
241err_pll_cfg:
242 dss_pll_disable(&hdmi.pll.pll);
243err_pll_enable:
244 hdmi_power_off_core(dssdev);
245 return -EIO;
246}
247
248static void hdmi_power_off_full(struct omap_dss_device *dssdev)
249{
250 enum omap_channel channel = dssdev->dispc_channel;
251
252 hdmi_wp_clear_irqenable(&hdmi.wp, 0xffffffff);
253
254 hdmi_wp_video_stop(&hdmi.wp);
255
256 dss_mgr_disable(channel);
257
258 hdmi_wp_set_phy_pwr(&hdmi.wp, HDMI_PHYPWRCMD_OFF);
259
260 dss_pll_disable(&hdmi.pll.pll);
261
262 hdmi_power_off_core(dssdev);
263}
264
265static int hdmi_display_check_timing(struct omap_dss_device *dssdev,
266 struct omap_video_timings *timings)
267{
268 if (!dispc_mgr_timings_ok(dssdev->dispc_channel, timings))
269 return -EINVAL;
270
271 return 0;
272}
273
274static void hdmi_display_set_timing(struct omap_dss_device *dssdev,
275 struct omap_video_timings *timings)
276{
277 mutex_lock(&hdmi.lock);
278
279 hdmi.cfg.timings = *timings;
280
281 dispc_set_tv_pclk(timings->pixelclock);
282
283 mutex_unlock(&hdmi.lock);
284}
285
286static void hdmi_display_get_timings(struct omap_dss_device *dssdev,
287 struct omap_video_timings *timings)
288{
289 *timings = hdmi.cfg.timings;
290}
291
292static void hdmi_dump_regs(struct seq_file *s)
293{
294 mutex_lock(&hdmi.lock);
295
296 if (hdmi_runtime_get()) {
297 mutex_unlock(&hdmi.lock);
298 return;
299 }
300
301 hdmi_wp_dump(&hdmi.wp, s);
302 hdmi_pll_dump(&hdmi.pll, s);
303 hdmi_phy_dump(&hdmi.phy, s);
304 hdmi4_core_dump(&hdmi.core, s);
305
306 hdmi_runtime_put();
307 mutex_unlock(&hdmi.lock);
308}
309
310static int read_edid(u8 *buf, int len)
311{
312 int r;
313
314 mutex_lock(&hdmi.lock);
315
316 r = hdmi_runtime_get();
317 BUG_ON(r);
318
319 r = hdmi4_read_edid(&hdmi.core, buf, len);
320
321 hdmi_runtime_put();
322 mutex_unlock(&hdmi.lock);
323
324 return r;
325}
326
327static void hdmi_start_audio_stream(struct omap_hdmi *hd)
328{
329 hdmi_wp_audio_enable(&hd->wp, true);
330 hdmi4_audio_start(&hd->core, &hd->wp);
331}
332
333static void hdmi_stop_audio_stream(struct omap_hdmi *hd)
334{
335 hdmi4_audio_stop(&hd->core, &hd->wp);
336 hdmi_wp_audio_enable(&hd->wp, false);
337}
338
339static int hdmi_display_enable(struct omap_dss_device *dssdev)
340{
341 struct omap_dss_device *out = &hdmi.output;
342 unsigned long flags;
343 int r = 0;
344
345 DSSDBG("ENTER hdmi_display_enable\n");
346
347 mutex_lock(&hdmi.lock);
348
349 if (!out->dispc_channel_connected) {
350 DSSERR("failed to enable display: no output/manager\n");
351 r = -ENODEV;
352 goto err0;
353 }
354
355 r = hdmi_power_on_full(dssdev);
356 if (r) {
357 DSSERR("failed to power on device\n");
358 goto err0;
359 }
360
361 if (hdmi.audio_configured) {
362 r = hdmi4_audio_config(&hdmi.core, &hdmi.wp, &hdmi.audio_config,
363 hdmi.cfg.timings.pixelclock);
364 if (r) {
365 DSSERR("Error restoring audio configuration: %d", r);
366 hdmi.audio_abort_cb(&hdmi.pdev->dev);
367 hdmi.audio_configured = false;
368 }
369 }
370
371 spin_lock_irqsave(&hdmi.audio_playing_lock, flags);
372 if (hdmi.audio_configured && hdmi.audio_playing)
373 hdmi_start_audio_stream(&hdmi);
374 hdmi.display_enabled = true;
375 spin_unlock_irqrestore(&hdmi.audio_playing_lock, flags);
376
377 mutex_unlock(&hdmi.lock);
378 return 0;
379
380err0:
381 mutex_unlock(&hdmi.lock);
382 return r;
383}
384
385static void hdmi_display_disable(struct omap_dss_device *dssdev)
386{
387 unsigned long flags;
388
389 DSSDBG("Enter hdmi_display_disable\n");
390
391 mutex_lock(&hdmi.lock);
392
393 spin_lock_irqsave(&hdmi.audio_playing_lock, flags);
394 hdmi_stop_audio_stream(&hdmi);
395 hdmi.display_enabled = false;
396 spin_unlock_irqrestore(&hdmi.audio_playing_lock, flags);
397
398 hdmi_power_off_full(dssdev);
399
400 mutex_unlock(&hdmi.lock);
401}
402
403static int hdmi_core_enable(struct omap_dss_device *dssdev)
404{
405 int r = 0;
406
407 DSSDBG("ENTER omapdss_hdmi_core_enable\n");
408
409 mutex_lock(&hdmi.lock);
410
411 r = hdmi_power_on_core(dssdev);
412 if (r) {
413 DSSERR("failed to power on device\n");
414 goto err0;
415 }
416
417 mutex_unlock(&hdmi.lock);
418 return 0;
419
420err0:
421 mutex_unlock(&hdmi.lock);
422 return r;
423}
424
425static void hdmi_core_disable(struct omap_dss_device *dssdev)
426{
427 DSSDBG("Enter omapdss_hdmi_core_disable\n");
428
429 mutex_lock(&hdmi.lock);
430
431 hdmi_power_off_core(dssdev);
432
433 mutex_unlock(&hdmi.lock);
434}
435
436static int hdmi_connect(struct omap_dss_device *dssdev,
437 struct omap_dss_device *dst)
438{
439 enum omap_channel channel = dssdev->dispc_channel;
440 int r;
441
442 r = hdmi_init_regulator();
443 if (r)
444 return r;
445
446 r = dss_mgr_connect(channel, dssdev);
447 if (r)
448 return r;
449
450 r = omapdss_output_set_device(dssdev, dst);
451 if (r) {
452 DSSERR("failed to connect output to new device: %s\n",
453 dst->name);
454 dss_mgr_disconnect(channel, dssdev);
455 return r;
456 }
457
458 return 0;
459}
460
461static void hdmi_disconnect(struct omap_dss_device *dssdev,
462 struct omap_dss_device *dst)
463{
464 enum omap_channel channel = dssdev->dispc_channel;
465
466 WARN_ON(dst != dssdev->dst);
467
468 if (dst != dssdev->dst)
469 return;
470
471 omapdss_output_unset_device(dssdev);
472
473 dss_mgr_disconnect(channel, dssdev);
474}
475
476static int hdmi_read_edid(struct omap_dss_device *dssdev,
477 u8 *edid, int len)
478{
479 bool need_enable;
480 int r;
481
482 need_enable = hdmi.core_enabled == false;
483
484 if (need_enable) {
485 r = hdmi_core_enable(dssdev);
486 if (r)
487 return r;
488 }
489
490 r = read_edid(edid, len);
491
492 if (need_enable)
493 hdmi_core_disable(dssdev);
494
495 return r;
496}
497
498static int hdmi_set_infoframe(struct omap_dss_device *dssdev,
499 const struct hdmi_avi_infoframe *avi)
500{
501 hdmi.cfg.infoframe = *avi;
502 return 0;
503}
504
505static int hdmi_set_hdmi_mode(struct omap_dss_device *dssdev,
506 bool hdmi_mode)
507{
508 hdmi.cfg.hdmi_dvi_mode = hdmi_mode ? HDMI_HDMI : HDMI_DVI;
509 return 0;
510}
511
512static const struct omapdss_hdmi_ops hdmi_ops = {
513 .connect = hdmi_connect,
514 .disconnect = hdmi_disconnect,
515
516 .enable = hdmi_display_enable,
517 .disable = hdmi_display_disable,
518
519 .check_timings = hdmi_display_check_timing,
520 .set_timings = hdmi_display_set_timing,
521 .get_timings = hdmi_display_get_timings,
522
523 .read_edid = hdmi_read_edid,
524 .set_infoframe = hdmi_set_infoframe,
525 .set_hdmi_mode = hdmi_set_hdmi_mode,
526};
527
528static void hdmi_init_output(struct platform_device *pdev)
529{
530 struct omap_dss_device *out = &hdmi.output;
531
532 out->dev = &pdev->dev;
533 out->id = OMAP_DSS_OUTPUT_HDMI;
534 out->output_type = OMAP_DISPLAY_TYPE_HDMI;
535 out->name = "hdmi.0";
536 out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT;
537 out->ops.hdmi = &hdmi_ops;
538 out->owner = THIS_MODULE;
539
540 omapdss_register_output(out);
541}
542
543static void hdmi_uninit_output(struct platform_device *pdev)
544{
545 struct omap_dss_device *out = &hdmi.output;
546
547 omapdss_unregister_output(out);
548}
549
550static int hdmi_probe_of(struct platform_device *pdev)
551{
552 struct device_node *node = pdev->dev.of_node;
553 struct device_node *ep;
554 int r;
555
556 ep = omapdss_of_get_first_endpoint(node);
557 if (!ep)
558 return 0;
559
560 r = hdmi_parse_lanes_of(pdev, ep, &hdmi.phy);
561 if (r)
562 goto err;
563
564 of_node_put(ep);
565 return 0;
566
567err:
568 of_node_put(ep);
569 return r;
570}
571
572/* Audio callbacks */
573static int hdmi_audio_startup(struct device *dev,
574 void (*abort_cb)(struct device *dev))
575{
576 struct omap_hdmi *hd = dev_get_drvdata(dev);
577 int ret = 0;
578
579 mutex_lock(&hd->lock);
580
581 if (!hdmi_mode_has_audio(&hd->cfg) || !hd->display_enabled) {
582 ret = -EPERM;
583 goto out;
584 }
585
586 hd->audio_abort_cb = abort_cb;
587
588out:
589 mutex_unlock(&hd->lock);
590
591 return ret;
592}
593
594static int hdmi_audio_shutdown(struct device *dev)
595{
596 struct omap_hdmi *hd = dev_get_drvdata(dev);
597
598 mutex_lock(&hd->lock);
599 hd->audio_abort_cb = NULL;
600 hd->audio_configured = false;
601 hd->audio_playing = false;
602 mutex_unlock(&hd->lock);
603
604 return 0;
605}
606
607static int hdmi_audio_start(struct device *dev)
608{
609 struct omap_hdmi *hd = dev_get_drvdata(dev);
610 unsigned long flags;
611
612 WARN_ON(!hdmi_mode_has_audio(&hd->cfg));
613
614 spin_lock_irqsave(&hd->audio_playing_lock, flags);
615
616 if (hd->display_enabled)
617 hdmi_start_audio_stream(hd);
618 hd->audio_playing = true;
619
620 spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
621 return 0;
622}
623
624static void hdmi_audio_stop(struct device *dev)
625{
626 struct omap_hdmi *hd = dev_get_drvdata(dev);
627 unsigned long flags;
628
629 WARN_ON(!hdmi_mode_has_audio(&hd->cfg));
630
631 spin_lock_irqsave(&hd->audio_playing_lock, flags);
632
633 if (hd->display_enabled)
634 hdmi_stop_audio_stream(hd);
635 hd->audio_playing = false;
636
637 spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
638}
639
640static int hdmi_audio_config(struct device *dev,
641 struct omap_dss_audio *dss_audio)
642{
643 struct omap_hdmi *hd = dev_get_drvdata(dev);
644 int ret;
645
646 mutex_lock(&hd->lock);
647
648 if (!hdmi_mode_has_audio(&hd->cfg) || !hd->display_enabled) {
649 ret = -EPERM;
650 goto out;
651 }
652
653 ret = hdmi4_audio_config(&hd->core, &hd->wp, dss_audio,
654 hd->cfg.timings.pixelclock);
655 if (!ret) {
656 hd->audio_configured = true;
657 hd->audio_config = *dss_audio;
658 }
659out:
660 mutex_unlock(&hd->lock);
661
662 return ret;
663}
664
665static const struct omap_hdmi_audio_ops hdmi_audio_ops = {
666 .audio_startup = hdmi_audio_startup,
667 .audio_shutdown = hdmi_audio_shutdown,
668 .audio_start = hdmi_audio_start,
669 .audio_stop = hdmi_audio_stop,
670 .audio_config = hdmi_audio_config,
671};
672
673static int hdmi_audio_register(struct device *dev)
674{
675 struct omap_hdmi_audio_pdata pdata = {
676 .dev = dev,
677 .dss_version = omapdss_get_version(),
678 .audio_dma_addr = hdmi_wp_get_audio_dma_addr(&hdmi.wp),
679 .ops = &hdmi_audio_ops,
680 };
681
682 hdmi.audio_pdev = platform_device_register_data(
683 dev, "omap-hdmi-audio", PLATFORM_DEVID_AUTO,
684 &pdata, sizeof(pdata));
685
686 if (IS_ERR(hdmi.audio_pdev))
687 return PTR_ERR(hdmi.audio_pdev);
688
689 return 0;
690}
691
692/* HDMI HW IP initialisation */
693static int hdmi4_bind(struct device *dev, struct device *master, void *data)
694{
695 struct platform_device *pdev = to_platform_device(dev);
696 int r;
697 int irq;
698
699 hdmi.pdev = pdev;
700 dev_set_drvdata(&pdev->dev, &hdmi);
701
702 mutex_init(&hdmi.lock);
703 spin_lock_init(&hdmi.audio_playing_lock);
704
705 if (pdev->dev.of_node) {
706 r = hdmi_probe_of(pdev);
707 if (r)
708 return r;
709 }
710
711 r = hdmi_wp_init(pdev, &hdmi.wp);
712 if (r)
713 return r;
714
715 r = hdmi_pll_init(pdev, &hdmi.pll, &hdmi.wp);
716 if (r)
717 return r;
718
719 r = hdmi_phy_init(pdev, &hdmi.phy);
720 if (r)
721 goto err;
722
723 r = hdmi4_core_init(pdev, &hdmi.core);
724 if (r)
725 goto err;
726
727 irq = platform_get_irq(pdev, 0);
728 if (irq < 0) {
729 DSSERR("platform_get_irq failed\n");
730 r = -ENODEV;
731 goto err;
732 }
733
734 r = devm_request_threaded_irq(&pdev->dev, irq,
735 NULL, hdmi_irq_handler,
736 IRQF_ONESHOT, "OMAP HDMI", &hdmi.wp);
737 if (r) {
738 DSSERR("HDMI IRQ request failed\n");
739 goto err;
740 }
741
742 pm_runtime_enable(&pdev->dev);
743
744 hdmi_init_output(pdev);
745
746 r = hdmi_audio_register(&pdev->dev);
747 if (r) {
748 DSSERR("Registering HDMI audio failed\n");
749 hdmi_uninit_output(pdev);
750 pm_runtime_disable(&pdev->dev);
751 return r;
752 }
753
754 dss_debugfs_create_file("hdmi", hdmi_dump_regs);
755
756 return 0;
757err:
758 hdmi_pll_uninit(&hdmi.pll);
759 return r;
760}
761
762static void hdmi4_unbind(struct device *dev, struct device *master, void *data)
763{
764 struct platform_device *pdev = to_platform_device(dev);
765
766 if (hdmi.audio_pdev)
767 platform_device_unregister(hdmi.audio_pdev);
768
769 hdmi_uninit_output(pdev);
770
771 hdmi_pll_uninit(&hdmi.pll);
772
773 pm_runtime_disable(&pdev->dev);
774}
775
776static const struct component_ops hdmi4_component_ops = {
777 .bind = hdmi4_bind,
778 .unbind = hdmi4_unbind,
779};
780
781static int hdmi4_probe(struct platform_device *pdev)
782{
783 return component_add(&pdev->dev, &hdmi4_component_ops);
784}
785
786static int hdmi4_remove(struct platform_device *pdev)
787{
788 component_del(&pdev->dev, &hdmi4_component_ops);
789 return 0;
790}
791
792static int hdmi_runtime_suspend(struct device *dev)
793{
794 dispc_runtime_put();
795
796 return 0;
797}
798
799static int hdmi_runtime_resume(struct device *dev)
800{
801 int r;
802
803 r = dispc_runtime_get();
804 if (r < 0)
805 return r;
806
807 return 0;
808}
809
810static const struct dev_pm_ops hdmi_pm_ops = {
811 .runtime_suspend = hdmi_runtime_suspend,
812 .runtime_resume = hdmi_runtime_resume,
813};
814
815static const struct of_device_id hdmi_of_match[] = {
816 { .compatible = "ti,omap4-hdmi", },
817 {},
818};
819
820static struct platform_driver omapdss_hdmihw_driver = {
821 .probe = hdmi4_probe,
822 .remove = hdmi4_remove,
823 .driver = {
824 .name = "omapdss_hdmi",
825 .pm = &hdmi_pm_ops,
826 .of_match_table = hdmi_of_match,
827 .suppress_bind_attrs = true,
828 },
829};
830
831int __init hdmi4_init_platform_driver(void)
832{
833 return platform_driver_register(&omapdss_hdmihw_driver);
834}
835
836void hdmi4_uninit_platform_driver(void)
837{
838 platform_driver_unregister(&omapdss_hdmihw_driver);
839}
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
45static struct omap_hdmi hdmi;
46
47static 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
61static 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
71static 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
102static 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
122static 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
141err_runtime_get:
142 regulator_disable(hdmi.vdda_reg);
143
144 return r;
145}
146
147static 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
155static int hdmi_power_on_full(struct omap_dss_device *dssdev)
156{
157 int r;
158 struct videomode *vm;
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 vm = &hdmi.cfg.vm;
173
174 DSSDBG("hdmi_power_on hactive= %d vactive = %d\n", vm->hactive,
175 vm->vactive);
176
177 pc = vm->pixelclock;
178 if (vm->flags & DISPLAY_FLAGS_DOUBLECLK)
179 pc *= 2;
180
181 /* DSS_HDMI_TCLK is bitclk / 10 */
182 pc *= 10;
183
184 dss_pll_calc_b(&hdmi.pll.pll, clk_get_rate(hdmi.pll.pll.clkin),
185 pc, &hdmi_cinfo);
186
187 r = dss_pll_enable(&hdmi.pll.pll);
188 if (r) {
189 DSSERR("Failed to enable PLL\n");
190 goto err_pll_enable;
191 }
192
193 r = dss_pll_set_config(&hdmi.pll.pll, &hdmi_cinfo);
194 if (r) {
195 DSSERR("Failed to configure PLL\n");
196 goto err_pll_cfg;
197 }
198
199 r = hdmi_phy_configure(&hdmi.phy, hdmi_cinfo.clkdco,
200 hdmi_cinfo.clkout[0]);
201 if (r) {
202 DSSDBG("Failed to configure PHY\n");
203 goto err_phy_cfg;
204 }
205
206 r = hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
207 if (r)
208 goto err_phy_pwr;
209
210 hdmi4_configure(&hdmi.core, &hdmi.wp, &hdmi.cfg);
211
212 /* tv size */
213 dss_mgr_set_timings(channel, vm);
214
215 r = dss_mgr_enable(channel);
216 if (r)
217 goto err_mgr_enable;
218
219 r = hdmi_wp_video_start(&hdmi.wp);
220 if (r)
221 goto err_vid_enable;
222
223 hdmi_wp_set_irqenable(wp,
224 HDMI_IRQ_LINK_CONNECT | HDMI_IRQ_LINK_DISCONNECT);
225
226 return 0;
227
228err_vid_enable:
229 dss_mgr_disable(channel);
230err_mgr_enable:
231 hdmi_wp_set_phy_pwr(&hdmi.wp, HDMI_PHYPWRCMD_OFF);
232err_phy_pwr:
233err_phy_cfg:
234err_pll_cfg:
235 dss_pll_disable(&hdmi.pll.pll);
236err_pll_enable:
237 hdmi_power_off_core(dssdev);
238 return -EIO;
239}
240
241static void hdmi_power_off_full(struct omap_dss_device *dssdev)
242{
243 enum omap_channel channel = dssdev->dispc_channel;
244
245 hdmi_wp_clear_irqenable(&hdmi.wp, 0xffffffff);
246
247 hdmi_wp_video_stop(&hdmi.wp);
248
249 dss_mgr_disable(channel);
250
251 hdmi_wp_set_phy_pwr(&hdmi.wp, HDMI_PHYPWRCMD_OFF);
252
253 dss_pll_disable(&hdmi.pll.pll);
254
255 hdmi_power_off_core(dssdev);
256}
257
258static int hdmi_display_check_timing(struct omap_dss_device *dssdev,
259 struct videomode *vm)
260{
261 if (!dispc_mgr_timings_ok(dssdev->dispc_channel, vm))
262 return -EINVAL;
263
264 return 0;
265}
266
267static void hdmi_display_set_timing(struct omap_dss_device *dssdev,
268 struct videomode *vm)
269{
270 mutex_lock(&hdmi.lock);
271
272 hdmi.cfg.vm = *vm;
273
274 dispc_set_tv_pclk(vm->pixelclock);
275
276 mutex_unlock(&hdmi.lock);
277}
278
279static void hdmi_display_get_timings(struct omap_dss_device *dssdev,
280 struct videomode *vm)
281{
282 *vm = hdmi.cfg.vm;
283}
284
285static void hdmi_dump_regs(struct seq_file *s)
286{
287 mutex_lock(&hdmi.lock);
288
289 if (hdmi_runtime_get()) {
290 mutex_unlock(&hdmi.lock);
291 return;
292 }
293
294 hdmi_wp_dump(&hdmi.wp, s);
295 hdmi_pll_dump(&hdmi.pll, s);
296 hdmi_phy_dump(&hdmi.phy, s);
297 hdmi4_core_dump(&hdmi.core, s);
298
299 hdmi_runtime_put();
300 mutex_unlock(&hdmi.lock);
301}
302
303static int read_edid(u8 *buf, int len)
304{
305 int r;
306
307 mutex_lock(&hdmi.lock);
308
309 r = hdmi_runtime_get();
310 BUG_ON(r);
311
312 r = hdmi4_read_edid(&hdmi.core, buf, len);
313
314 hdmi_runtime_put();
315 mutex_unlock(&hdmi.lock);
316
317 return r;
318}
319
320static void hdmi_start_audio_stream(struct omap_hdmi *hd)
321{
322 hdmi_wp_audio_enable(&hd->wp, true);
323 hdmi4_audio_start(&hd->core, &hd->wp);
324}
325
326static void hdmi_stop_audio_stream(struct omap_hdmi *hd)
327{
328 hdmi4_audio_stop(&hd->core, &hd->wp);
329 hdmi_wp_audio_enable(&hd->wp, false);
330}
331
332static int hdmi_display_enable(struct omap_dss_device *dssdev)
333{
334 struct omap_dss_device *out = &hdmi.output;
335 unsigned long flags;
336 int r = 0;
337
338 DSSDBG("ENTER hdmi_display_enable\n");
339
340 mutex_lock(&hdmi.lock);
341
342 if (!out->dispc_channel_connected) {
343 DSSERR("failed to enable display: no output/manager\n");
344 r = -ENODEV;
345 goto err0;
346 }
347
348 r = hdmi_power_on_full(dssdev);
349 if (r) {
350 DSSERR("failed to power on device\n");
351 goto err0;
352 }
353
354 if (hdmi.audio_configured) {
355 r = hdmi4_audio_config(&hdmi.core, &hdmi.wp, &hdmi.audio_config,
356 hdmi.cfg.vm.pixelclock);
357 if (r) {
358 DSSERR("Error restoring audio configuration: %d", r);
359 hdmi.audio_abort_cb(&hdmi.pdev->dev);
360 hdmi.audio_configured = false;
361 }
362 }
363
364 spin_lock_irqsave(&hdmi.audio_playing_lock, flags);
365 if (hdmi.audio_configured && hdmi.audio_playing)
366 hdmi_start_audio_stream(&hdmi);
367 hdmi.display_enabled = true;
368 spin_unlock_irqrestore(&hdmi.audio_playing_lock, flags);
369
370 mutex_unlock(&hdmi.lock);
371 return 0;
372
373err0:
374 mutex_unlock(&hdmi.lock);
375 return r;
376}
377
378static void hdmi_display_disable(struct omap_dss_device *dssdev)
379{
380 unsigned long flags;
381
382 DSSDBG("Enter hdmi_display_disable\n");
383
384 mutex_lock(&hdmi.lock);
385
386 spin_lock_irqsave(&hdmi.audio_playing_lock, flags);
387 hdmi_stop_audio_stream(&hdmi);
388 hdmi.display_enabled = false;
389 spin_unlock_irqrestore(&hdmi.audio_playing_lock, flags);
390
391 hdmi_power_off_full(dssdev);
392
393 mutex_unlock(&hdmi.lock);
394}
395
396static int hdmi_core_enable(struct omap_dss_device *dssdev)
397{
398 int r = 0;
399
400 DSSDBG("ENTER omapdss_hdmi_core_enable\n");
401
402 mutex_lock(&hdmi.lock);
403
404 r = hdmi_power_on_core(dssdev);
405 if (r) {
406 DSSERR("failed to power on device\n");
407 goto err0;
408 }
409
410 mutex_unlock(&hdmi.lock);
411 return 0;
412
413err0:
414 mutex_unlock(&hdmi.lock);
415 return r;
416}
417
418static void hdmi_core_disable(struct omap_dss_device *dssdev)
419{
420 DSSDBG("Enter omapdss_hdmi_core_disable\n");
421
422 mutex_lock(&hdmi.lock);
423
424 hdmi_power_off_core(dssdev);
425
426 mutex_unlock(&hdmi.lock);
427}
428
429static int hdmi_connect(struct omap_dss_device *dssdev,
430 struct omap_dss_device *dst)
431{
432 enum omap_channel channel = dssdev->dispc_channel;
433 int r;
434
435 r = hdmi_init_regulator();
436 if (r)
437 return r;
438
439 r = dss_mgr_connect(channel, dssdev);
440 if (r)
441 return r;
442
443 r = omapdss_output_set_device(dssdev, dst);
444 if (r) {
445 DSSERR("failed to connect output to new device: %s\n",
446 dst->name);
447 dss_mgr_disconnect(channel, dssdev);
448 return r;
449 }
450
451 return 0;
452}
453
454static void hdmi_disconnect(struct omap_dss_device *dssdev,
455 struct omap_dss_device *dst)
456{
457 enum omap_channel channel = dssdev->dispc_channel;
458
459 WARN_ON(dst != dssdev->dst);
460
461 if (dst != dssdev->dst)
462 return;
463
464 omapdss_output_unset_device(dssdev);
465
466 dss_mgr_disconnect(channel, dssdev);
467}
468
469static int hdmi_read_edid(struct omap_dss_device *dssdev,
470 u8 *edid, int len)
471{
472 bool need_enable;
473 int r;
474
475 need_enable = hdmi.core_enabled == false;
476
477 if (need_enable) {
478 r = hdmi_core_enable(dssdev);
479 if (r)
480 return r;
481 }
482
483 r = read_edid(edid, len);
484
485 if (need_enable)
486 hdmi_core_disable(dssdev);
487
488 return r;
489}
490
491static int hdmi_set_infoframe(struct omap_dss_device *dssdev,
492 const struct hdmi_avi_infoframe *avi)
493{
494 hdmi.cfg.infoframe = *avi;
495 return 0;
496}
497
498static int hdmi_set_hdmi_mode(struct omap_dss_device *dssdev,
499 bool hdmi_mode)
500{
501 hdmi.cfg.hdmi_dvi_mode = hdmi_mode ? HDMI_HDMI : HDMI_DVI;
502 return 0;
503}
504
505static const struct omapdss_hdmi_ops hdmi_ops = {
506 .connect = hdmi_connect,
507 .disconnect = hdmi_disconnect,
508
509 .enable = hdmi_display_enable,
510 .disable = hdmi_display_disable,
511
512 .check_timings = hdmi_display_check_timing,
513 .set_timings = hdmi_display_set_timing,
514 .get_timings = hdmi_display_get_timings,
515
516 .read_edid = hdmi_read_edid,
517 .set_infoframe = hdmi_set_infoframe,
518 .set_hdmi_mode = hdmi_set_hdmi_mode,
519};
520
521static void hdmi_init_output(struct platform_device *pdev)
522{
523 struct omap_dss_device *out = &hdmi.output;
524
525 out->dev = &pdev->dev;
526 out->id = OMAP_DSS_OUTPUT_HDMI;
527 out->output_type = OMAP_DISPLAY_TYPE_HDMI;
528 out->name = "hdmi.0";
529 out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT;
530 out->ops.hdmi = &hdmi_ops;
531 out->owner = THIS_MODULE;
532
533 omapdss_register_output(out);
534}
535
536static void hdmi_uninit_output(struct platform_device *pdev)
537{
538 struct omap_dss_device *out = &hdmi.output;
539
540 omapdss_unregister_output(out);
541}
542
543static int hdmi_probe_of(struct platform_device *pdev)
544{
545 struct device_node *node = pdev->dev.of_node;
546 struct device_node *ep;
547 int r;
548
549 ep = omapdss_of_get_first_endpoint(node);
550 if (!ep)
551 return 0;
552
553 r = hdmi_parse_lanes_of(pdev, ep, &hdmi.phy);
554 if (r)
555 goto err;
556
557 of_node_put(ep);
558 return 0;
559
560err:
561 of_node_put(ep);
562 return r;
563}
564
565/* Audio callbacks */
566static int hdmi_audio_startup(struct device *dev,
567 void (*abort_cb)(struct device *dev))
568{
569 struct omap_hdmi *hd = dev_get_drvdata(dev);
570 int ret = 0;
571
572 mutex_lock(&hd->lock);
573
574 if (!hdmi_mode_has_audio(&hd->cfg) || !hd->display_enabled) {
575 ret = -EPERM;
576 goto out;
577 }
578
579 hd->audio_abort_cb = abort_cb;
580
581out:
582 mutex_unlock(&hd->lock);
583
584 return ret;
585}
586
587static int hdmi_audio_shutdown(struct device *dev)
588{
589 struct omap_hdmi *hd = dev_get_drvdata(dev);
590
591 mutex_lock(&hd->lock);
592 hd->audio_abort_cb = NULL;
593 hd->audio_configured = false;
594 hd->audio_playing = false;
595 mutex_unlock(&hd->lock);
596
597 return 0;
598}
599
600static int hdmi_audio_start(struct device *dev)
601{
602 struct omap_hdmi *hd = dev_get_drvdata(dev);
603 unsigned long flags;
604
605 WARN_ON(!hdmi_mode_has_audio(&hd->cfg));
606
607 spin_lock_irqsave(&hd->audio_playing_lock, flags);
608
609 if (hd->display_enabled)
610 hdmi_start_audio_stream(hd);
611 hd->audio_playing = true;
612
613 spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
614 return 0;
615}
616
617static void hdmi_audio_stop(struct device *dev)
618{
619 struct omap_hdmi *hd = dev_get_drvdata(dev);
620 unsigned long flags;
621
622 WARN_ON(!hdmi_mode_has_audio(&hd->cfg));
623
624 spin_lock_irqsave(&hd->audio_playing_lock, flags);
625
626 if (hd->display_enabled)
627 hdmi_stop_audio_stream(hd);
628 hd->audio_playing = false;
629
630 spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
631}
632
633static int hdmi_audio_config(struct device *dev,
634 struct omap_dss_audio *dss_audio)
635{
636 struct omap_hdmi *hd = dev_get_drvdata(dev);
637 int ret;
638
639 mutex_lock(&hd->lock);
640
641 if (!hdmi_mode_has_audio(&hd->cfg) || !hd->display_enabled) {
642 ret = -EPERM;
643 goto out;
644 }
645
646 ret = hdmi4_audio_config(&hd->core, &hd->wp, dss_audio,
647 hd->cfg.vm.pixelclock);
648 if (!ret) {
649 hd->audio_configured = true;
650 hd->audio_config = *dss_audio;
651 }
652out:
653 mutex_unlock(&hd->lock);
654
655 return ret;
656}
657
658static const struct omap_hdmi_audio_ops hdmi_audio_ops = {
659 .audio_startup = hdmi_audio_startup,
660 .audio_shutdown = hdmi_audio_shutdown,
661 .audio_start = hdmi_audio_start,
662 .audio_stop = hdmi_audio_stop,
663 .audio_config = hdmi_audio_config,
664};
665
666static int hdmi_audio_register(struct device *dev)
667{
668 struct omap_hdmi_audio_pdata pdata = {
669 .dev = dev,
670 .dss_version = omapdss_get_version(),
671 .audio_dma_addr = hdmi_wp_get_audio_dma_addr(&hdmi.wp),
672 .ops = &hdmi_audio_ops,
673 };
674
675 hdmi.audio_pdev = platform_device_register_data(
676 dev, "omap-hdmi-audio", PLATFORM_DEVID_AUTO,
677 &pdata, sizeof(pdata));
678
679 if (IS_ERR(hdmi.audio_pdev))
680 return PTR_ERR(hdmi.audio_pdev);
681
682 return 0;
683}
684
685/* HDMI HW IP initialisation */
686static int hdmi4_bind(struct device *dev, struct device *master, void *data)
687{
688 struct platform_device *pdev = to_platform_device(dev);
689 int r;
690 int irq;
691
692 hdmi.pdev = pdev;
693 dev_set_drvdata(&pdev->dev, &hdmi);
694
695 mutex_init(&hdmi.lock);
696 spin_lock_init(&hdmi.audio_playing_lock);
697
698 if (pdev->dev.of_node) {
699 r = hdmi_probe_of(pdev);
700 if (r)
701 return r;
702 }
703
704 r = hdmi_wp_init(pdev, &hdmi.wp);
705 if (r)
706 return r;
707
708 r = hdmi_pll_init(pdev, &hdmi.pll, &hdmi.wp);
709 if (r)
710 return r;
711
712 r = hdmi_phy_init(pdev, &hdmi.phy);
713 if (r)
714 goto err;
715
716 r = hdmi4_core_init(pdev, &hdmi.core);
717 if (r)
718 goto err;
719
720 irq = platform_get_irq(pdev, 0);
721 if (irq < 0) {
722 DSSERR("platform_get_irq failed\n");
723 r = -ENODEV;
724 goto err;
725 }
726
727 r = devm_request_threaded_irq(&pdev->dev, irq,
728 NULL, hdmi_irq_handler,
729 IRQF_ONESHOT, "OMAP HDMI", &hdmi.wp);
730 if (r) {
731 DSSERR("HDMI IRQ request failed\n");
732 goto err;
733 }
734
735 pm_runtime_enable(&pdev->dev);
736
737 hdmi_init_output(pdev);
738
739 r = hdmi_audio_register(&pdev->dev);
740 if (r) {
741 DSSERR("Registering HDMI audio failed\n");
742 hdmi_uninit_output(pdev);
743 pm_runtime_disable(&pdev->dev);
744 return r;
745 }
746
747 dss_debugfs_create_file("hdmi", hdmi_dump_regs);
748
749 return 0;
750err:
751 hdmi_pll_uninit(&hdmi.pll);
752 return r;
753}
754
755static void hdmi4_unbind(struct device *dev, struct device *master, void *data)
756{
757 struct platform_device *pdev = to_platform_device(dev);
758
759 if (hdmi.audio_pdev)
760 platform_device_unregister(hdmi.audio_pdev);
761
762 hdmi_uninit_output(pdev);
763
764 hdmi_pll_uninit(&hdmi.pll);
765
766 pm_runtime_disable(&pdev->dev);
767}
768
769static const struct component_ops hdmi4_component_ops = {
770 .bind = hdmi4_bind,
771 .unbind = hdmi4_unbind,
772};
773
774static int hdmi4_probe(struct platform_device *pdev)
775{
776 return component_add(&pdev->dev, &hdmi4_component_ops);
777}
778
779static int hdmi4_remove(struct platform_device *pdev)
780{
781 component_del(&pdev->dev, &hdmi4_component_ops);
782 return 0;
783}
784
785static int hdmi_runtime_suspend(struct device *dev)
786{
787 dispc_runtime_put();
788
789 return 0;
790}
791
792static int hdmi_runtime_resume(struct device *dev)
793{
794 int r;
795
796 r = dispc_runtime_get();
797 if (r < 0)
798 return r;
799
800 return 0;
801}
802
803static const struct dev_pm_ops hdmi_pm_ops = {
804 .runtime_suspend = hdmi_runtime_suspend,
805 .runtime_resume = hdmi_runtime_resume,
806};
807
808static const struct of_device_id hdmi_of_match[] = {
809 { .compatible = "ti,omap4-hdmi", },
810 {},
811};
812
813static struct platform_driver omapdss_hdmihw_driver = {
814 .probe = hdmi4_probe,
815 .remove = hdmi4_remove,
816 .driver = {
817 .name = "omapdss_hdmi",
818 .pm = &hdmi_pm_ops,
819 .of_match_table = hdmi_of_match,
820 .suppress_bind_attrs = true,
821 },
822};
823
824int __init hdmi4_init_platform_driver(void)
825{
826 return platform_driver_register(&omapdss_hdmihw_driver);
827}
828
829void hdmi4_uninit_platform_driver(void)
830{
831 platform_driver_unregister(&omapdss_hdmihw_driver);
832}