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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 *
4 * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com/
5 * Authors: Yong Zhi
6 * Mythri pk <mythripk@ti.com>
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License version 2 as published by
10 * the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * this program. If not, see <http://www.gnu.org/licenses/>.
19 */
20
21#define DSS_SUBSYS_NAME "HDMI"
22
23#include <linux/kernel.h>
24#include <linux/module.h>
25#include <linux/err.h>
26#include <linux/io.h>
27#include <linux/interrupt.h>
28#include <linux/mutex.h>
29#include <linux/delay.h>
30#include <linux/string.h>
31#include <linux/platform_device.h>
32#include <linux/pm_runtime.h>
33#include <linux/clk.h>
34#include <linux/gpio.h>
35#include <linux/regulator/consumer.h>
36#include <linux/component.h>
37#include <linux/of.h>
38#include <linux/of_graph.h>
39#include <sound/omap-hdmi-audio.h>
40#include <media/cec.h>
41
42#include "omapdss.h"
43#include "hdmi4_core.h"
44#include "hdmi4_cec.h"
45#include "dss.h"
46#include "hdmi.h"
47
48static int hdmi_runtime_get(struct omap_hdmi *hdmi)
49{
50 int r;
51
52 DSSDBG("hdmi_runtime_get\n");
53
54 r = pm_runtime_get_sync(&hdmi->pdev->dev);
55 WARN_ON(r < 0);
56 if (r < 0)
57 return r;
58
59 return 0;
60}
61
62static void hdmi_runtime_put(struct omap_hdmi *hdmi)
63{
64 int r;
65
66 DSSDBG("hdmi_runtime_put\n");
67
68 r = pm_runtime_put_sync(&hdmi->pdev->dev);
69 WARN_ON(r < 0 && r != -ENOSYS);
70}
71
72static irqreturn_t hdmi_irq_handler(int irq, void *data)
73{
74 struct omap_hdmi *hdmi = data;
75 struct hdmi_wp_data *wp = &hdmi->wp;
76 u32 irqstatus;
77
78 irqstatus = hdmi_wp_get_irqstatus(wp);
79 hdmi_wp_set_irqstatus(wp, irqstatus);
80
81 if ((irqstatus & HDMI_IRQ_LINK_CONNECT) &&
82 irqstatus & HDMI_IRQ_LINK_DISCONNECT) {
83 /*
84 * If we get both connect and disconnect interrupts at the same
85 * time, turn off the PHY, clear interrupts, and restart, which
86 * raises connect interrupt if a cable is connected, or nothing
87 * if cable is not connected.
88 */
89 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_OFF);
90
91 hdmi_wp_set_irqstatus(wp, HDMI_IRQ_LINK_CONNECT |
92 HDMI_IRQ_LINK_DISCONNECT);
93
94 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
95 } else if (irqstatus & HDMI_IRQ_LINK_CONNECT) {
96 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_TXON);
97 } else if (irqstatus & HDMI_IRQ_LINK_DISCONNECT) {
98 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
99 }
100 if (irqstatus & HDMI_IRQ_CORE) {
101 u32 intr4 = hdmi_read_reg(hdmi->core.base, HDMI_CORE_SYS_INTR4);
102
103 hdmi_write_reg(hdmi->core.base, HDMI_CORE_SYS_INTR4, intr4);
104 if (intr4 & 8)
105 hdmi4_cec_irq(&hdmi->core);
106 }
107
108 return IRQ_HANDLED;
109}
110
111static int hdmi_init_regulator(struct omap_hdmi *hdmi)
112{
113 struct regulator *reg;
114
115 if (hdmi->vdda_reg != NULL)
116 return 0;
117
118 reg = devm_regulator_get(&hdmi->pdev->dev, "vdda");
119
120 if (IS_ERR(reg)) {
121 if (PTR_ERR(reg) != -EPROBE_DEFER)
122 DSSERR("can't get VDDA regulator\n");
123 return PTR_ERR(reg);
124 }
125
126 hdmi->vdda_reg = reg;
127
128 return 0;
129}
130
131static int hdmi_power_on_core(struct omap_hdmi *hdmi)
132{
133 int r;
134
135 if (hdmi->core.core_pwr_cnt++)
136 return 0;
137
138 r = regulator_enable(hdmi->vdda_reg);
139 if (r)
140 goto err_reg_enable;
141
142 r = hdmi_runtime_get(hdmi);
143 if (r)
144 goto err_runtime_get;
145
146 hdmi4_core_powerdown_disable(&hdmi->core);
147
148 /* Make selection of HDMI in DSS */
149 dss_select_hdmi_venc_clk_source(hdmi->dss, DSS_HDMI_M_PCLK);
150
151 hdmi->core_enabled = true;
152
153 return 0;
154
155err_runtime_get:
156 regulator_disable(hdmi->vdda_reg);
157err_reg_enable:
158 hdmi->core.core_pwr_cnt--;
159
160 return r;
161}
162
163static void hdmi_power_off_core(struct omap_hdmi *hdmi)
164{
165 if (--hdmi->core.core_pwr_cnt)
166 return;
167
168 hdmi->core_enabled = false;
169
170 hdmi_runtime_put(hdmi);
171 regulator_disable(hdmi->vdda_reg);
172}
173
174static int hdmi_power_on_full(struct omap_hdmi *hdmi)
175{
176 int r;
177 struct videomode *vm;
178 struct hdmi_wp_data *wp = &hdmi->wp;
179 struct dss_pll_clock_info hdmi_cinfo = { 0 };
180 unsigned int pc;
181
182 r = hdmi_power_on_core(hdmi);
183 if (r)
184 return r;
185
186 /* disable and clear irqs */
187 hdmi_wp_clear_irqenable(wp, ~HDMI_IRQ_CORE);
188 hdmi_wp_set_irqstatus(wp, ~HDMI_IRQ_CORE);
189
190 vm = &hdmi->cfg.vm;
191
192 DSSDBG("hdmi_power_on hactive= %d vactive = %d\n", vm->hactive,
193 vm->vactive);
194
195 pc = vm->pixelclock;
196 if (vm->flags & DISPLAY_FLAGS_DOUBLECLK)
197 pc *= 2;
198
199 /* DSS_HDMI_TCLK is bitclk / 10 */
200 pc *= 10;
201
202 dss_pll_calc_b(&hdmi->pll.pll, clk_get_rate(hdmi->pll.pll.clkin),
203 pc, &hdmi_cinfo);
204
205 r = dss_pll_enable(&hdmi->pll.pll);
206 if (r) {
207 DSSERR("Failed to enable PLL\n");
208 goto err_pll_enable;
209 }
210
211 r = dss_pll_set_config(&hdmi->pll.pll, &hdmi_cinfo);
212 if (r) {
213 DSSERR("Failed to configure PLL\n");
214 goto err_pll_cfg;
215 }
216
217 r = hdmi_phy_configure(&hdmi->phy, hdmi_cinfo.clkdco,
218 hdmi_cinfo.clkout[0]);
219 if (r) {
220 DSSDBG("Failed to configure PHY\n");
221 goto err_phy_cfg;
222 }
223
224 r = hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
225 if (r)
226 goto err_phy_pwr;
227
228 hdmi4_configure(&hdmi->core, &hdmi->wp, &hdmi->cfg);
229
230 /* tv size */
231 dss_mgr_set_timings(&hdmi->output, vm);
232
233 r = dss_mgr_enable(&hdmi->output);
234 if (r)
235 goto err_mgr_enable;
236
237 r = hdmi_wp_video_start(&hdmi->wp);
238 if (r)
239 goto err_vid_enable;
240
241 hdmi_wp_set_irqenable(wp,
242 HDMI_IRQ_LINK_CONNECT | HDMI_IRQ_LINK_DISCONNECT);
243
244 return 0;
245
246err_vid_enable:
247 dss_mgr_disable(&hdmi->output);
248err_mgr_enable:
249 hdmi_wp_set_phy_pwr(&hdmi->wp, HDMI_PHYPWRCMD_OFF);
250err_phy_pwr:
251err_phy_cfg:
252err_pll_cfg:
253 dss_pll_disable(&hdmi->pll.pll);
254err_pll_enable:
255 hdmi_power_off_core(hdmi);
256 return -EIO;
257}
258
259static void hdmi_power_off_full(struct omap_hdmi *hdmi)
260{
261 hdmi_wp_clear_irqenable(&hdmi->wp, ~HDMI_IRQ_CORE);
262
263 hdmi_wp_video_stop(&hdmi->wp);
264
265 dss_mgr_disable(&hdmi->output);
266
267 hdmi_wp_set_phy_pwr(&hdmi->wp, HDMI_PHYPWRCMD_OFF);
268
269 dss_pll_disable(&hdmi->pll.pll);
270
271 hdmi_power_off_core(hdmi);
272}
273
274static int hdmi_display_check_timing(struct omap_dss_device *dssdev,
275 struct videomode *vm)
276{
277 struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev);
278
279 if (!dispc_mgr_timings_ok(hdmi->dss->dispc, dssdev->dispc_channel, vm))
280 return -EINVAL;
281
282 return 0;
283}
284
285static void hdmi_display_set_timing(struct omap_dss_device *dssdev,
286 struct videomode *vm)
287{
288 struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev);
289
290 mutex_lock(&hdmi->lock);
291
292 hdmi->cfg.vm = *vm;
293
294 dispc_set_tv_pclk(hdmi->dss->dispc, vm->pixelclock);
295
296 mutex_unlock(&hdmi->lock);
297}
298
299static void hdmi_display_get_timings(struct omap_dss_device *dssdev,
300 struct videomode *vm)
301{
302 struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev);
303
304 *vm = hdmi->cfg.vm;
305}
306
307static int hdmi_dump_regs(struct seq_file *s, void *p)
308{
309 struct omap_hdmi *hdmi = s->private;
310
311 mutex_lock(&hdmi->lock);
312
313 if (hdmi_runtime_get(hdmi)) {
314 mutex_unlock(&hdmi->lock);
315 return 0;
316 }
317
318 hdmi_wp_dump(&hdmi->wp, s);
319 hdmi_pll_dump(&hdmi->pll, s);
320 hdmi_phy_dump(&hdmi->phy, s);
321 hdmi4_core_dump(&hdmi->core, s);
322
323 hdmi_runtime_put(hdmi);
324 mutex_unlock(&hdmi->lock);
325 return 0;
326}
327
328static int read_edid(struct omap_hdmi *hdmi, u8 *buf, int len)
329{
330 int r;
331
332 mutex_lock(&hdmi->lock);
333
334 r = hdmi_runtime_get(hdmi);
335 BUG_ON(r);
336
337 r = hdmi4_read_edid(&hdmi->core, buf, len);
338
339 hdmi_runtime_put(hdmi);
340 mutex_unlock(&hdmi->lock);
341
342 return r;
343}
344
345static void hdmi_start_audio_stream(struct omap_hdmi *hd)
346{
347 hdmi_wp_audio_enable(&hd->wp, true);
348 hdmi4_audio_start(&hd->core, &hd->wp);
349}
350
351static void hdmi_stop_audio_stream(struct omap_hdmi *hd)
352{
353 hdmi4_audio_stop(&hd->core, &hd->wp);
354 hdmi_wp_audio_enable(&hd->wp, false);
355}
356
357static int hdmi_display_enable(struct omap_dss_device *dssdev)
358{
359 struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev);
360 unsigned long flags;
361 int r = 0;
362
363 DSSDBG("ENTER hdmi_display_enable\n");
364
365 mutex_lock(&hdmi->lock);
366
367 if (!dssdev->dispc_channel_connected) {
368 DSSERR("failed to enable display: no output/manager\n");
369 r = -ENODEV;
370 goto err0;
371 }
372
373 r = hdmi_power_on_full(hdmi);
374 if (r) {
375 DSSERR("failed to power on device\n");
376 goto err0;
377 }
378
379 if (hdmi->audio_configured) {
380 r = hdmi4_audio_config(&hdmi->core, &hdmi->wp,
381 &hdmi->audio_config,
382 hdmi->cfg.vm.pixelclock);
383 if (r) {
384 DSSERR("Error restoring audio configuration: %d", r);
385 hdmi->audio_abort_cb(&hdmi->pdev->dev);
386 hdmi->audio_configured = false;
387 }
388 }
389
390 spin_lock_irqsave(&hdmi->audio_playing_lock, flags);
391 if (hdmi->audio_configured && hdmi->audio_playing)
392 hdmi_start_audio_stream(hdmi);
393 hdmi->display_enabled = true;
394 spin_unlock_irqrestore(&hdmi->audio_playing_lock, flags);
395
396 mutex_unlock(&hdmi->lock);
397 return 0;
398
399err0:
400 mutex_unlock(&hdmi->lock);
401 return r;
402}
403
404static void hdmi_display_disable(struct omap_dss_device *dssdev)
405{
406 struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev);
407 unsigned long flags;
408
409 DSSDBG("Enter hdmi_display_disable\n");
410
411 mutex_lock(&hdmi->lock);
412
413 spin_lock_irqsave(&hdmi->audio_playing_lock, flags);
414 hdmi_stop_audio_stream(hdmi);
415 hdmi->display_enabled = false;
416 spin_unlock_irqrestore(&hdmi->audio_playing_lock, flags);
417
418 hdmi_power_off_full(hdmi);
419
420 mutex_unlock(&hdmi->lock);
421}
422
423int hdmi4_core_enable(struct hdmi_core_data *core)
424{
425 struct omap_hdmi *hdmi = container_of(core, struct omap_hdmi, core);
426 int r = 0;
427
428 DSSDBG("ENTER omapdss_hdmi4_core_enable\n");
429
430 mutex_lock(&hdmi->lock);
431
432 r = hdmi_power_on_core(hdmi);
433 if (r) {
434 DSSERR("failed to power on device\n");
435 goto err0;
436 }
437
438 mutex_unlock(&hdmi->lock);
439 return 0;
440
441err0:
442 mutex_unlock(&hdmi->lock);
443 return r;
444}
445
446void hdmi4_core_disable(struct hdmi_core_data *core)
447{
448 struct omap_hdmi *hdmi = container_of(core, struct omap_hdmi, core);
449
450 DSSDBG("Enter omapdss_hdmi4_core_disable\n");
451
452 mutex_lock(&hdmi->lock);
453
454 hdmi_power_off_core(hdmi);
455
456 mutex_unlock(&hdmi->lock);
457}
458
459static int hdmi_connect(struct omap_dss_device *dssdev,
460 struct omap_dss_device *dst)
461{
462 struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev);
463 int r;
464
465 r = hdmi_init_regulator(hdmi);
466 if (r)
467 return r;
468
469 r = dss_mgr_connect(&hdmi->output, dssdev);
470 if (r)
471 return r;
472
473 r = omapdss_output_set_device(dssdev, dst);
474 if (r) {
475 DSSERR("failed to connect output to new device: %s\n",
476 dst->name);
477 dss_mgr_disconnect(&hdmi->output, dssdev);
478 return r;
479 }
480
481 return 0;
482}
483
484static void hdmi_disconnect(struct omap_dss_device *dssdev,
485 struct omap_dss_device *dst)
486{
487 struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev);
488
489 WARN_ON(dst != dssdev->dst);
490
491 if (dst != dssdev->dst)
492 return;
493
494 omapdss_output_unset_device(dssdev);
495
496 dss_mgr_disconnect(&hdmi->output, dssdev);
497}
498
499static int hdmi_read_edid(struct omap_dss_device *dssdev,
500 u8 *edid, int len)
501{
502 struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev);
503 bool need_enable;
504 int r;
505
506 need_enable = hdmi->core_enabled == false;
507
508 if (need_enable) {
509 r = hdmi4_core_enable(&hdmi->core);
510 if (r)
511 return r;
512 }
513
514 r = read_edid(hdmi, edid, len);
515 if (r >= 256)
516 hdmi4_cec_set_phys_addr(&hdmi->core,
517 cec_get_edid_phys_addr(edid, r, NULL));
518 else
519 hdmi4_cec_set_phys_addr(&hdmi->core, CEC_PHYS_ADDR_INVALID);
520 if (need_enable)
521 hdmi4_core_disable(&hdmi->core);
522
523 return r;
524}
525
526static void hdmi_lost_hotplug(struct omap_dss_device *dssdev)
527{
528 struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev);
529
530 hdmi4_cec_set_phys_addr(&hdmi->core, CEC_PHYS_ADDR_INVALID);
531}
532
533static int hdmi_set_infoframe(struct omap_dss_device *dssdev,
534 const struct hdmi_avi_infoframe *avi)
535{
536 struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev);
537
538 hdmi->cfg.infoframe = *avi;
539 return 0;
540}
541
542static int hdmi_set_hdmi_mode(struct omap_dss_device *dssdev,
543 bool hdmi_mode)
544{
545 struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev);
546
547 hdmi->cfg.hdmi_dvi_mode = hdmi_mode ? HDMI_HDMI : HDMI_DVI;
548 return 0;
549}
550
551static const struct omapdss_hdmi_ops hdmi_ops = {
552 .connect = hdmi_connect,
553 .disconnect = hdmi_disconnect,
554
555 .enable = hdmi_display_enable,
556 .disable = hdmi_display_disable,
557
558 .check_timings = hdmi_display_check_timing,
559 .set_timings = hdmi_display_set_timing,
560 .get_timings = hdmi_display_get_timings,
561
562 .read_edid = hdmi_read_edid,
563 .lost_hotplug = hdmi_lost_hotplug,
564 .set_infoframe = hdmi_set_infoframe,
565 .set_hdmi_mode = hdmi_set_hdmi_mode,
566};
567
568static void hdmi_init_output(struct omap_hdmi *hdmi)
569{
570 struct omap_dss_device *out = &hdmi->output;
571
572 out->dev = &hdmi->pdev->dev;
573 out->id = OMAP_DSS_OUTPUT_HDMI;
574 out->output_type = OMAP_DISPLAY_TYPE_HDMI;
575 out->name = "hdmi.0";
576 out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT;
577 out->ops.hdmi = &hdmi_ops;
578 out->owner = THIS_MODULE;
579
580 omapdss_register_output(out);
581}
582
583static void hdmi_uninit_output(struct omap_hdmi *hdmi)
584{
585 struct omap_dss_device *out = &hdmi->output;
586
587 omapdss_unregister_output(out);
588}
589
590static int hdmi_probe_of(struct omap_hdmi *hdmi)
591{
592 struct platform_device *pdev = hdmi->pdev;
593 struct device_node *node = pdev->dev.of_node;
594 struct device_node *ep;
595 int r;
596
597 ep = of_graph_get_endpoint_by_regs(node, 0, 0);
598 if (!ep)
599 return 0;
600
601 r = hdmi_parse_lanes_of(pdev, ep, &hdmi->phy);
602 if (r)
603 goto err;
604
605 of_node_put(ep);
606 return 0;
607
608err:
609 of_node_put(ep);
610 return r;
611}
612
613/* Audio callbacks */
614static int hdmi_audio_startup(struct device *dev,
615 void (*abort_cb)(struct device *dev))
616{
617 struct omap_hdmi *hd = dev_get_drvdata(dev);
618
619 mutex_lock(&hd->lock);
620
621 WARN_ON(hd->audio_abort_cb != NULL);
622
623 hd->audio_abort_cb = abort_cb;
624
625 mutex_unlock(&hd->lock);
626
627 return 0;
628}
629
630static int hdmi_audio_shutdown(struct device *dev)
631{
632 struct omap_hdmi *hd = dev_get_drvdata(dev);
633
634 mutex_lock(&hd->lock);
635 hd->audio_abort_cb = NULL;
636 hd->audio_configured = false;
637 hd->audio_playing = false;
638 mutex_unlock(&hd->lock);
639
640 return 0;
641}
642
643static int hdmi_audio_start(struct device *dev)
644{
645 struct omap_hdmi *hd = dev_get_drvdata(dev);
646 unsigned long flags;
647
648 spin_lock_irqsave(&hd->audio_playing_lock, flags);
649
650 if (hd->display_enabled) {
651 if (!hdmi_mode_has_audio(&hd->cfg))
652 DSSERR("%s: Video mode does not support audio\n",
653 __func__);
654 hdmi_start_audio_stream(hd);
655 }
656 hd->audio_playing = true;
657
658 spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
659 return 0;
660}
661
662static void hdmi_audio_stop(struct device *dev)
663{
664 struct omap_hdmi *hd = dev_get_drvdata(dev);
665 unsigned long flags;
666
667 WARN_ON(!hdmi_mode_has_audio(&hd->cfg));
668
669 spin_lock_irqsave(&hd->audio_playing_lock, flags);
670
671 if (hd->display_enabled)
672 hdmi_stop_audio_stream(hd);
673 hd->audio_playing = false;
674
675 spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
676}
677
678static int hdmi_audio_config(struct device *dev,
679 struct omap_dss_audio *dss_audio)
680{
681 struct omap_hdmi *hd = dev_get_drvdata(dev);
682 int ret = 0;
683
684 mutex_lock(&hd->lock);
685
686 if (hd->display_enabled) {
687 ret = hdmi4_audio_config(&hd->core, &hd->wp, dss_audio,
688 hd->cfg.vm.pixelclock);
689 if (ret)
690 goto out;
691 }
692
693 hd->audio_configured = true;
694 hd->audio_config = *dss_audio;
695out:
696 mutex_unlock(&hd->lock);
697
698 return ret;
699}
700
701static const struct omap_hdmi_audio_ops hdmi_audio_ops = {
702 .audio_startup = hdmi_audio_startup,
703 .audio_shutdown = hdmi_audio_shutdown,
704 .audio_start = hdmi_audio_start,
705 .audio_stop = hdmi_audio_stop,
706 .audio_config = hdmi_audio_config,
707};
708
709static int hdmi_audio_register(struct omap_hdmi *hdmi)
710{
711 struct omap_hdmi_audio_pdata pdata = {
712 .dev = &hdmi->pdev->dev,
713 .version = 4,
714 .audio_dma_addr = hdmi_wp_get_audio_dma_addr(&hdmi->wp),
715 .ops = &hdmi_audio_ops,
716 };
717
718 hdmi->audio_pdev = platform_device_register_data(
719 &hdmi->pdev->dev, "omap-hdmi-audio", PLATFORM_DEVID_AUTO,
720 &pdata, sizeof(pdata));
721
722 if (IS_ERR(hdmi->audio_pdev))
723 return PTR_ERR(hdmi->audio_pdev);
724
725 return 0;
726}
727
728/* HDMI HW IP initialisation */
729static int hdmi4_bind(struct device *dev, struct device *master, void *data)
730{
731 struct platform_device *pdev = to_platform_device(dev);
732 struct dss_device *dss = dss_get_device(master);
733 struct omap_hdmi *hdmi;
734 int r;
735 int irq;
736
737 hdmi = kzalloc(sizeof(*hdmi), GFP_KERNEL);
738 if (!hdmi)
739 return -ENOMEM;
740
741 hdmi->pdev = pdev;
742 hdmi->dss = dss;
743 dev_set_drvdata(&pdev->dev, hdmi);
744
745 mutex_init(&hdmi->lock);
746 spin_lock_init(&hdmi->audio_playing_lock);
747
748 r = hdmi_probe_of(hdmi);
749 if (r)
750 goto err_free;
751
752 r = hdmi_wp_init(pdev, &hdmi->wp, 4);
753 if (r)
754 goto err_free;
755
756 r = hdmi_pll_init(dss, pdev, &hdmi->pll, &hdmi->wp);
757 if (r)
758 goto err_free;
759
760 r = hdmi_phy_init(pdev, &hdmi->phy, 4);
761 if (r)
762 goto err_pll;
763
764 r = hdmi4_core_init(pdev, &hdmi->core);
765 if (r)
766 goto err_pll;
767
768 r = hdmi4_cec_init(pdev, &hdmi->core, &hdmi->wp);
769 if (r)
770 goto err_pll;
771
772 irq = platform_get_irq(pdev, 0);
773 if (irq < 0) {
774 DSSERR("platform_get_irq failed\n");
775 r = -ENODEV;
776 goto err_pll;
777 }
778
779 r = devm_request_threaded_irq(&pdev->dev, irq,
780 NULL, hdmi_irq_handler,
781 IRQF_ONESHOT, "OMAP HDMI", hdmi);
782 if (r) {
783 DSSERR("HDMI IRQ request failed\n");
784 goto err_pll;
785 }
786
787 pm_runtime_enable(&pdev->dev);
788
789 hdmi_init_output(hdmi);
790
791 r = hdmi_audio_register(hdmi);
792 if (r) {
793 DSSERR("Registering HDMI audio failed\n");
794 hdmi_uninit_output(hdmi);
795 pm_runtime_disable(&pdev->dev);
796 return r;
797 }
798
799 hdmi->debugfs = dss_debugfs_create_file(dss, "hdmi", hdmi_dump_regs,
800 hdmi);
801
802 return 0;
803
804err_pll:
805 hdmi_pll_uninit(&hdmi->pll);
806err_free:
807 kfree(hdmi);
808 return r;
809}
810
811static void hdmi4_unbind(struct device *dev, struct device *master, void *data)
812{
813 struct omap_hdmi *hdmi = dev_get_drvdata(dev);
814
815 dss_debugfs_remove_file(hdmi->debugfs);
816
817 if (hdmi->audio_pdev)
818 platform_device_unregister(hdmi->audio_pdev);
819
820 hdmi_uninit_output(hdmi);
821
822 hdmi4_cec_uninit(&hdmi->core);
823
824 hdmi_pll_uninit(&hdmi->pll);
825
826 pm_runtime_disable(dev);
827
828 kfree(hdmi);
829}
830
831static const struct component_ops hdmi4_component_ops = {
832 .bind = hdmi4_bind,
833 .unbind = hdmi4_unbind,
834};
835
836static int hdmi4_probe(struct platform_device *pdev)
837{
838 return component_add(&pdev->dev, &hdmi4_component_ops);
839}
840
841static int hdmi4_remove(struct platform_device *pdev)
842{
843 component_del(&pdev->dev, &hdmi4_component_ops);
844 return 0;
845}
846
847static int hdmi_runtime_suspend(struct device *dev)
848{
849 struct omap_hdmi *hdmi = dev_get_drvdata(dev);
850
851 dispc_runtime_put(hdmi->dss->dispc);
852
853 return 0;
854}
855
856static int hdmi_runtime_resume(struct device *dev)
857{
858 struct omap_hdmi *hdmi = dev_get_drvdata(dev);
859 int r;
860
861 r = dispc_runtime_get(hdmi->dss->dispc);
862 if (r < 0)
863 return r;
864
865 return 0;
866}
867
868static const struct dev_pm_ops hdmi_pm_ops = {
869 .runtime_suspend = hdmi_runtime_suspend,
870 .runtime_resume = hdmi_runtime_resume,
871};
872
873static const struct of_device_id hdmi_of_match[] = {
874 { .compatible = "ti,omap4-hdmi", },
875 {},
876};
877
878struct platform_driver omapdss_hdmi4hw_driver = {
879 .probe = hdmi4_probe,
880 .remove = hdmi4_remove,
881 .driver = {
882 .name = "omapdss_hdmi",
883 .pm = &hdmi_pm_ops,
884 .of_match_table = hdmi_of_match,
885 .suppress_bind_attrs = true,
886 },
887};