1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * HDMI interface DSS driver for TI's OMAP4 family of SoCs.
4 * Copyright (C) 2010-2011 Texas Instruments Incorporated - https://www.ti.com/
5 * Authors: Yong Zhi
6 *	Mythri pk <mythripk@ti.com>
7 */
8
9#define DSS_SUBSYS_NAME "HDMI"
10
11#include <linux/kernel.h>
12#include <linux/module.h>
13#include <linux/err.h>
14#include <linux/io.h>
15#include <linux/interrupt.h>
16#include <linux/mutex.h>
17#include <linux/delay.h>
18#include <linux/string.h>
19#include <linux/platform_device.h>
20#include <linux/pm_runtime.h>
21#include <linux/clk.h>
22#include <linux/of.h>
23#include <linux/regulator/consumer.h>
24#include <linux/component.h>
25#include <video/omapfb_dss.h>
26#include <sound/omap-hdmi-audio.h>
27
28#include "hdmi4_core.h"
29#include "dss.h"
30#include "dss_features.h"
31#include "hdmi.h"
32
33static struct omap_hdmi hdmi;
34
35static int hdmi_runtime_get(void)
36{
37	int r;
38
39	DSSDBG("hdmi_runtime_get\n");
40
41	r = pm_runtime_resume_and_get(&hdmi.pdev->dev);
42	if (WARN_ON(r < 0))
43		return r;
44
45	return 0;
46}
47
48static void hdmi_runtime_put(void)
49{
50	int r;
51
52	DSSDBG("hdmi_runtime_put\n");
53
54	r = pm_runtime_put_sync(&hdmi.pdev->dev);
55	WARN_ON(r < 0 && r != -ENOSYS);
56}
57
58static irqreturn_t hdmi_irq_handler(int irq, void *data)
59{
60	struct hdmi_wp_data *wp = data;
61	u32 irqstatus;
62
63	irqstatus = hdmi_wp_get_irqstatus(wp);
64	hdmi_wp_set_irqstatus(wp, irqstatus);
65
66	if ((irqstatus & HDMI_IRQ_LINK_CONNECT) &&
67			irqstatus & HDMI_IRQ_LINK_DISCONNECT) {
68		/*
69		 * If we get both connect and disconnect interrupts at the same
70		 * time, turn off the PHY, clear interrupts, and restart, which
71		 * raises connect interrupt if a cable is connected, or nothing
72		 * if cable is not connected.
73		 */
74		hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_OFF);
75
76		hdmi_wp_set_irqstatus(wp, HDMI_IRQ_LINK_CONNECT |
77				HDMI_IRQ_LINK_DISCONNECT);
78
79		hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
80	} else if (irqstatus & HDMI_IRQ_LINK_CONNECT) {
81		hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_TXON);
82	} else if (irqstatus & HDMI_IRQ_LINK_DISCONNECT) {
83		hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
84	}
85
86	return IRQ_HANDLED;
87}
88
89static int hdmi_init_regulator(void)
90{
91	struct regulator *reg;
92
93	if (hdmi.vdda_reg != NULL)
94		return 0;
95
96	reg = devm_regulator_get(&hdmi.pdev->dev, "vdda");
97
98	if (IS_ERR(reg)) {
99		if (PTR_ERR(reg) != -EPROBE_DEFER)
100			DSSERR("can't get VDDA regulator\n");
101		return PTR_ERR(reg);
102	}
103
104	hdmi.vdda_reg = reg;
105
106	return 0;
107}
108
109static int hdmi_power_on_core(struct omap_dss_device *dssdev)
110{
111	int r;
112
113	r = regulator_enable(hdmi.vdda_reg);
114	if (r)
115		return r;
116
117	r = hdmi_runtime_get();
118	if (r)
119		goto err_runtime_get;
120
121	/* Make selection of HDMI in DSS */
122	dss_select_hdmi_venc_clk_source(DSS_HDMI_M_PCLK);
123
124	hdmi.core_enabled = true;
125
126	return 0;
127
128err_runtime_get:
129	regulator_disable(hdmi.vdda_reg);
130
131	return r;
132}
133
134static void hdmi_power_off_core(struct omap_dss_device *dssdev)
135{
136	hdmi.core_enabled = false;
137
138	hdmi_runtime_put();
139	regulator_disable(hdmi.vdda_reg);
140}
141
142static int hdmi_power_on_full(struct omap_dss_device *dssdev)
143{
144	int r;
145	struct omap_video_timings *p;
146	struct omap_overlay_manager *mgr = hdmi.output.manager;
147	struct hdmi_wp_data *wp = &hdmi.wp;
148	struct dss_pll_clock_info hdmi_cinfo = { 0 };
149
150	r = hdmi_power_on_core(dssdev);
151	if (r)
152		return r;
153
154	/* disable and clear irqs */
155	hdmi_wp_clear_irqenable(wp, 0xffffffff);
156	hdmi_wp_set_irqstatus(wp, 0xffffffff);
157
158	p = &hdmi.cfg.timings;
159
160	DSSDBG("hdmi_power_on x_res= %d y_res = %d\n", p->x_res, p->y_res);
161
162	hdmi_pll_compute(&hdmi.pll, p->pixelclock, &hdmi_cinfo);
163
164	r = dss_pll_enable(&hdmi.pll.pll);
165	if (r) {
166		DSSERR("Failed to enable PLL\n");
167		goto err_pll_enable;
168	}
169
170	r = dss_pll_set_config(&hdmi.pll.pll, &hdmi_cinfo);
171	if (r) {
172		DSSERR("Failed to configure PLL\n");
173		goto err_pll_cfg;
174	}
175
176	r = hdmi_phy_configure(&hdmi.phy, hdmi_cinfo.clkdco,
177		hdmi_cinfo.clkout[0]);
178	if (r) {
179		DSSDBG("Failed to configure PHY\n");
180		goto err_phy_cfg;
181	}
182
183	r = hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
184	if (r)
185		goto err_phy_pwr;
186
187	hdmi4_configure(&hdmi.core, &hdmi.wp, &hdmi.cfg);
188
189	/* bypass TV gamma table */
190	dispc_enable_gamma_table(0);
191
192	/* tv size */
193	dss_mgr_set_timings(mgr, p);
194
195	r = hdmi_wp_video_start(&hdmi.wp);
196	if (r)
197		goto err_vid_enable;
198
199	r = dss_mgr_enable(mgr);
200	if (r)
201		goto err_mgr_enable;
202
203	hdmi_wp_set_irqenable(wp,
204		HDMI_IRQ_LINK_CONNECT | HDMI_IRQ_LINK_DISCONNECT);
205
206	return 0;
207
208err_mgr_enable:
209	hdmi_wp_video_stop(&hdmi.wp);
210err_vid_enable:
211	hdmi_wp_set_phy_pwr(&hdmi.wp, HDMI_PHYPWRCMD_OFF);
212err_phy_pwr:
213err_phy_cfg:
214err_pll_cfg:
215	dss_pll_disable(&hdmi.pll.pll);
216err_pll_enable:
217	hdmi_power_off_core(dssdev);
218	return -EIO;
219}
220
221static void hdmi_power_off_full(struct omap_dss_device *dssdev)
222{
223	struct omap_overlay_manager *mgr = hdmi.output.manager;
224
225	hdmi_wp_clear_irqenable(&hdmi.wp, 0xffffffff);
226
227	dss_mgr_disable(mgr);
228
229	hdmi_wp_video_stop(&hdmi.wp);
230
231	hdmi_wp_set_phy_pwr(&hdmi.wp, HDMI_PHYPWRCMD_OFF);
232
233	dss_pll_disable(&hdmi.pll.pll);
234
235	hdmi_power_off_core(dssdev);
236}
237
238static int hdmi_display_check_timing(struct omap_dss_device *dssdev,
239					struct omap_video_timings *timings)
240{
241	struct omap_dss_device *out = &hdmi.output;
242
243	if (!dispc_mgr_timings_ok(out->dispc_channel, timings))
244		return -EINVAL;
245
246	return 0;
247}
248
249static void hdmi_display_set_timing(struct omap_dss_device *dssdev,
250		struct omap_video_timings *timings)
251{
252	mutex_lock(&hdmi.lock);
253
254	hdmi.cfg.timings = *timings;
255
256	dispc_set_tv_pclk(timings->pixelclock);
257
258	mutex_unlock(&hdmi.lock);
259}
260
261static void hdmi_display_get_timings(struct omap_dss_device *dssdev,
262		struct omap_video_timings *timings)
263{
264	*timings = hdmi.cfg.timings;
265}
266
267static void hdmi_dump_regs(struct seq_file *s)
268{
269	mutex_lock(&hdmi.lock);
270
271	if (hdmi_runtime_get()) {
272		mutex_unlock(&hdmi.lock);
273		return;
274	}
275
276	hdmi_wp_dump(&hdmi.wp, s);
277	hdmi_pll_dump(&hdmi.pll, s);
278	hdmi_phy_dump(&hdmi.phy, s);
279	hdmi4_core_dump(&hdmi.core, s);
280
281	hdmi_runtime_put();
282	mutex_unlock(&hdmi.lock);
283}
284
285static int read_edid(u8 *buf, int len)
286{
287	int r;
288
289	mutex_lock(&hdmi.lock);
290
291	r = hdmi_runtime_get();
292	BUG_ON(r);
293
294	r = hdmi4_read_edid(&hdmi.core,  buf, len);
295
296	hdmi_runtime_put();
297	mutex_unlock(&hdmi.lock);
298
299	return r;
300}
301
302static void hdmi_start_audio_stream(struct omap_hdmi *hd)
303{
304	hdmi_wp_audio_enable(&hd->wp, true);
305	hdmi4_audio_start(&hd->core, &hd->wp);
306}
307
308static void hdmi_stop_audio_stream(struct omap_hdmi *hd)
309{
310	hdmi4_audio_stop(&hd->core, &hd->wp);
311	hdmi_wp_audio_enable(&hd->wp, false);
312}
313
314static int hdmi_display_enable(struct omap_dss_device *dssdev)
315{
316	struct omap_dss_device *out = &hdmi.output;
317	unsigned long flags;
318	int r = 0;
319
320	DSSDBG("ENTER hdmi_display_enable\n");
321
322	mutex_lock(&hdmi.lock);
323
324	if (out->manager == NULL) {
325		DSSERR("failed to enable display: no output/manager\n");
326		r = -ENODEV;
327		goto err0;
328	}
329
330	r = hdmi_power_on_full(dssdev);
331	if (r) {
332		DSSERR("failed to power on device\n");
333		goto err0;
334	}
335
336	if (hdmi.audio_configured) {
337		r = hdmi4_audio_config(&hdmi.core, &hdmi.wp, &hdmi.audio_config,
338				       hdmi.cfg.timings.pixelclock);
339		if (r) {
340			DSSERR("Error restoring audio configuration: %d", r);
341			hdmi.audio_abort_cb(&hdmi.pdev->dev);
342			hdmi.audio_configured = false;
343		}
344	}
345
346	spin_lock_irqsave(&hdmi.audio_playing_lock, flags);
347	if (hdmi.audio_configured && hdmi.audio_playing)
348		hdmi_start_audio_stream(&hdmi);
349	hdmi.display_enabled = true;
350	spin_unlock_irqrestore(&hdmi.audio_playing_lock, flags);
351
352	mutex_unlock(&hdmi.lock);
353	return 0;
354
355err0:
356	mutex_unlock(&hdmi.lock);
357	return r;
358}
359
360static void hdmi_display_disable(struct omap_dss_device *dssdev)
361{
362	unsigned long flags;
363
364	DSSDBG("Enter hdmi_display_disable\n");
365
366	mutex_lock(&hdmi.lock);
367
368	spin_lock_irqsave(&hdmi.audio_playing_lock, flags);
369	hdmi_stop_audio_stream(&hdmi);
370	hdmi.display_enabled = false;
371	spin_unlock_irqrestore(&hdmi.audio_playing_lock, flags);
372
373	hdmi_power_off_full(dssdev);
374
375	mutex_unlock(&hdmi.lock);
376}
377
378static int hdmi_core_enable(struct omap_dss_device *dssdev)
379{
380	int r = 0;
381
382	DSSDBG("ENTER omapdss_hdmi_core_enable\n");
383
384	mutex_lock(&hdmi.lock);
385
386	r = hdmi_power_on_core(dssdev);
387	if (r) {
388		DSSERR("failed to power on device\n");
389		goto err0;
390	}
391
392	mutex_unlock(&hdmi.lock);
393	return 0;
394
395err0:
396	mutex_unlock(&hdmi.lock);
397	return r;
398}
399
400static void hdmi_core_disable(struct omap_dss_device *dssdev)
401{
402	DSSDBG("Enter omapdss_hdmi_core_disable\n");
403
404	mutex_lock(&hdmi.lock);
405
406	hdmi_power_off_core(dssdev);
407
408	mutex_unlock(&hdmi.lock);
409}
410
411static int hdmi_connect(struct omap_dss_device *dssdev,
412		struct omap_dss_device *dst)
413{
414	struct omap_overlay_manager *mgr;
415	int r;
416
417	r = hdmi_init_regulator();
418	if (r)
419		return r;
420
421	mgr = omap_dss_get_overlay_manager(dssdev->dispc_channel);
422	if (!mgr)
423		return -ENODEV;
424
425	r = dss_mgr_connect(mgr, dssdev);
426	if (r)
427		return r;
428
429	r = omapdss_output_set_device(dssdev, dst);
430	if (r) {
431		DSSERR("failed to connect output to new device: %s\n",
432				dst->name);
433		dss_mgr_disconnect(mgr, dssdev);
434		return r;
435	}
436
437	return 0;
438}
439
440static void hdmi_disconnect(struct omap_dss_device *dssdev,
441		struct omap_dss_device *dst)
442{
443	WARN_ON(dst != dssdev->dst);
444
445	if (dst != dssdev->dst)
446		return;
447
448	omapdss_output_unset_device(dssdev);
449
450	if (dssdev->manager)
451		dss_mgr_disconnect(dssdev->manager, dssdev);
452}
453
454static int hdmi_read_edid(struct omap_dss_device *dssdev,
455		u8 *edid, int len)
456{
457	bool need_enable = !hdmi.core_enabled;
458	int r;
459
460	if (need_enable) {
461		r = hdmi_core_enable(dssdev);
462		if (r)
463			return r;
464	}
465
466	r = read_edid(edid, len);
467
468	if (need_enable)
469		hdmi_core_disable(dssdev);
470
471	return r;
472}
473
474static int hdmi_set_infoframe(struct omap_dss_device *dssdev,
475		const struct hdmi_avi_infoframe *avi)
476{
477	hdmi.cfg.infoframe = *avi;
478	return 0;
479}
480
481static int hdmi_set_hdmi_mode(struct omap_dss_device *dssdev,
482		bool hdmi_mode)
483{
484	hdmi.cfg.hdmi_dvi_mode = hdmi_mode ? HDMI_HDMI : HDMI_DVI;
485	return 0;
486}
487
488static const struct omapdss_hdmi_ops hdmi_ops = {
489	.connect		= hdmi_connect,
490	.disconnect		= hdmi_disconnect,
491
492	.enable			= hdmi_display_enable,
493	.disable		= hdmi_display_disable,
494
495	.check_timings		= hdmi_display_check_timing,
496	.set_timings		= hdmi_display_set_timing,
497	.get_timings		= hdmi_display_get_timings,
498
499	.read_edid		= hdmi_read_edid,
500	.set_infoframe		= hdmi_set_infoframe,
501	.set_hdmi_mode		= hdmi_set_hdmi_mode,
502};
503
504static void hdmi_init_output(struct platform_device *pdev)
505{
506	struct omap_dss_device *out = &hdmi.output;
507
508	out->dev = &pdev->dev;
509	out->id = OMAP_DSS_OUTPUT_HDMI;
510	out->output_type = OMAP_DISPLAY_TYPE_HDMI;
511	out->name = "hdmi.0";
512	out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT;
513	out->ops.hdmi = &hdmi_ops;
514	out->owner = THIS_MODULE;
515
516	omapdss_register_output(out);
517}
518
519static void hdmi_uninit_output(struct platform_device *pdev)
520{
521	struct omap_dss_device *out = &hdmi.output;
522
523	omapdss_unregister_output(out);
524}
525
526static int hdmi_probe_of(struct platform_device *pdev)
527{
528	struct device_node *node = pdev->dev.of_node;
529	struct device_node *ep;
530	int r;
531
532	ep = omapdss_of_get_first_endpoint(node);
533	if (!ep)
534		return 0;
535
536	r = hdmi_parse_lanes_of(pdev, ep, &hdmi.phy);
537	if (r)
538		goto err;
539
540	of_node_put(ep);
541	return 0;
542
543err:
544	of_node_put(ep);
545	return r;
546}
547
548/* Audio callbacks */
549static int hdmi_audio_startup(struct device *dev,
550			      void (*abort_cb)(struct device *dev))
551{
552	struct omap_hdmi *hd = dev_get_drvdata(dev);
553	int ret = 0;
554
555	mutex_lock(&hd->lock);
556
557	if (!hdmi_mode_has_audio(&hd->cfg) || !hd->display_enabled) {
558		ret = -EPERM;
559		goto out;
560	}
561
562	hd->audio_abort_cb = abort_cb;
563
564out:
565	mutex_unlock(&hd->lock);
566
567	return ret;
568}
569
570static int hdmi_audio_shutdown(struct device *dev)
571{
572	struct omap_hdmi *hd = dev_get_drvdata(dev);
573
574	mutex_lock(&hd->lock);
575	hd->audio_abort_cb = NULL;
576	hd->audio_configured = false;
577	hd->audio_playing = false;
578	mutex_unlock(&hd->lock);
579
580	return 0;
581}
582
583static int hdmi_audio_start(struct device *dev)
584{
585	struct omap_hdmi *hd = dev_get_drvdata(dev);
586	unsigned long flags;
587
588	WARN_ON(!hdmi_mode_has_audio(&hd->cfg));
589
590	spin_lock_irqsave(&hd->audio_playing_lock, flags);
591
592	if (hd->display_enabled)
593		hdmi_start_audio_stream(hd);
594	hd->audio_playing = true;
595
596	spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
597	return 0;
598}
599
600static void hdmi_audio_stop(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_stop_audio_stream(hd);
611	hd->audio_playing = false;
612
613	spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
614}
615
616static int hdmi_audio_config(struct device *dev,
617			     struct omap_dss_audio *dss_audio)
618{
619	struct omap_hdmi *hd = dev_get_drvdata(dev);
620	int ret;
621
622	mutex_lock(&hd->lock);
623
624	if (!hdmi_mode_has_audio(&hd->cfg) || !hd->display_enabled) {
625		ret = -EPERM;
626		goto out;
627	}
628
629	ret = hdmi4_audio_config(&hd->core, &hd->wp, dss_audio,
630				 hd->cfg.timings.pixelclock);
631	if (!ret) {
632		hd->audio_configured = true;
633		hd->audio_config = *dss_audio;
634	}
635out:
636	mutex_unlock(&hd->lock);
637
638	return ret;
639}
640
641static const struct omap_hdmi_audio_ops hdmi_audio_ops = {
642	.audio_startup = hdmi_audio_startup,
643	.audio_shutdown = hdmi_audio_shutdown,
644	.audio_start = hdmi_audio_start,
645	.audio_stop = hdmi_audio_stop,
646	.audio_config = hdmi_audio_config,
647};
648
649static int hdmi_audio_register(struct device *dev)
650{
651	struct omap_hdmi_audio_pdata pdata = {
652		.dev = dev,
653		.version = 4,
654		.audio_dma_addr = hdmi_wp_get_audio_dma_addr(&hdmi.wp),
655		.ops = &hdmi_audio_ops,
656	};
657
658	hdmi.audio_pdev = platform_device_register_data(
659		dev, "omap-hdmi-audio", PLATFORM_DEVID_AUTO,
660		&pdata, sizeof(pdata));
661
662	return PTR_ERR_OR_ZERO(hdmi.audio_pdev);
663}
664
665/* HDMI HW IP initialisation */
666static int hdmi4_bind(struct device *dev, struct device *master, void *data)
667{
668	struct platform_device *pdev = to_platform_device(dev);
669	int r;
670	int irq;
671
672	hdmi.pdev = pdev;
673	platform_set_drvdata(pdev, &hdmi);
674
675	mutex_init(&hdmi.lock);
676	spin_lock_init(&hdmi.audio_playing_lock);
677
678	if (pdev->dev.of_node) {
679		r = hdmi_probe_of(pdev);
680		if (r)
681			return r;
682	}
683
684	r = hdmi_wp_init(pdev, &hdmi.wp);
685	if (r)
686		return r;
687
688	r = hdmi_pll_init(pdev, &hdmi.pll, &hdmi.wp);
689	if (r)
690		return r;
691
692	r = hdmi_phy_init(pdev, &hdmi.phy);
693	if (r)
694		goto err;
695
696	r = hdmi4_core_init(pdev, &hdmi.core);
697	if (r)
698		goto err;
699
700	irq = platform_get_irq(pdev, 0);
701	if (irq < 0) {
702		DSSERR("platform_get_irq failed\n");
703		r = -ENODEV;
704		goto err;
705	}
706
707	r = devm_request_threaded_irq(&pdev->dev, irq,
708			NULL, hdmi_irq_handler,
709			IRQF_ONESHOT, "OMAP HDMI", &hdmi.wp);
710	if (r) {
711		DSSERR("HDMI IRQ request failed\n");
712		goto err;
713	}
714
715	pm_runtime_enable(&pdev->dev);
716
717	hdmi_init_output(pdev);
718
719	r = hdmi_audio_register(&pdev->dev);
720	if (r) {
721		DSSERR("Registering HDMI audio failed\n");
722		hdmi_uninit_output(pdev);
723		pm_runtime_disable(&pdev->dev);
724		return r;
725	}
726
727	dss_debugfs_create_file("hdmi", hdmi_dump_regs);
728
729	return 0;
730err:
731	hdmi_pll_uninit(&hdmi.pll);
732	return r;
733}
734
735static void hdmi4_unbind(struct device *dev, struct device *master, void *data)
736{
737	struct platform_device *pdev = to_platform_device(dev);
738
739	if (hdmi.audio_pdev)
740		platform_device_unregister(hdmi.audio_pdev);
741
742	hdmi_uninit_output(pdev);
743
744	hdmi_pll_uninit(&hdmi.pll);
745
746	pm_runtime_disable(&pdev->dev);
747}
748
749static const struct component_ops hdmi4_component_ops = {
750	.bind	= hdmi4_bind,
751	.unbind	= hdmi4_unbind,
752};
753
754static int hdmi4_probe(struct platform_device *pdev)
755{
756	return component_add(&pdev->dev, &hdmi4_component_ops);
757}
758
759static void hdmi4_remove(struct platform_device *pdev)
760{
761	component_del(&pdev->dev, &hdmi4_component_ops);
762}
763
764static int hdmi_runtime_suspend(struct device *dev)
765{
766	dispc_runtime_put();
767
768	return 0;
769}
770
771static int hdmi_runtime_resume(struct device *dev)
772{
773	int r;
774
775	r = dispc_runtime_get();
776	if (r < 0)
777		return r;
778
779	return 0;
780}
781
782static const struct dev_pm_ops hdmi_pm_ops = {
783	.runtime_suspend = hdmi_runtime_suspend,
784	.runtime_resume = hdmi_runtime_resume,
785};
786
787static const struct of_device_id hdmi_of_match[] = {
788	{ .compatible = "ti,omap4-hdmi", },
789	{},
790};
791
792static struct platform_driver omapdss_hdmihw_driver = {
793	.probe		= hdmi4_probe,
794	.remove_new	= hdmi4_remove,
795	.driver         = {
796		.name   = "omapdss_hdmi",
797		.pm	= &hdmi_pm_ops,
798		.of_match_table = hdmi_of_match,
799		.suppress_bind_attrs = true,
800	},
801};
802
803int __init hdmi4_init_platform_driver(void)
804{
805	return platform_driver_register(&omapdss_hdmihw_driver);
806}
807
808void hdmi4_uninit_platform_driver(void)
809{
810	platform_driver_unregister(&omapdss_hdmihw_driver);
811}
812