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/of_graph.h>
24 #include <linux/regulator/consumer.h>
25 #include <linux/component.h>
26 #include <video/omapfb_dss.h>
27 #include <sound/omap-hdmi-audio.h>
28
29 #include "hdmi4_core.h"
30 #include "dss.h"
31 #include "dss_features.h"
32 #include "hdmi.h"
33
34 static struct omap_hdmi hdmi;
35
hdmi_runtime_get(void)36 static int hdmi_runtime_get(void)
37 {
38 int r;
39
40 DSSDBG("hdmi_runtime_get\n");
41
42 r = pm_runtime_resume_and_get(&hdmi.pdev->dev);
43 if (WARN_ON(r < 0))
44 return r;
45
46 return 0;
47 }
48
hdmi_runtime_put(void)49 static void hdmi_runtime_put(void)
50 {
51 int r;
52
53 DSSDBG("hdmi_runtime_put\n");
54
55 r = pm_runtime_put_sync(&hdmi.pdev->dev);
56 WARN_ON(r < 0 && r != -ENOSYS);
57 }
58
hdmi_irq_handler(int irq,void * data)59 static irqreturn_t hdmi_irq_handler(int irq, void *data)
60 {
61 struct hdmi_wp_data *wp = data;
62 u32 irqstatus;
63
64 irqstatus = hdmi_wp_get_irqstatus(wp);
65 hdmi_wp_set_irqstatus(wp, irqstatus);
66
67 if ((irqstatus & HDMI_IRQ_LINK_CONNECT) &&
68 irqstatus & HDMI_IRQ_LINK_DISCONNECT) {
69 /*
70 * If we get both connect and disconnect interrupts at the same
71 * time, turn off the PHY, clear interrupts, and restart, which
72 * raises connect interrupt if a cable is connected, or nothing
73 * if cable is not connected.
74 */
75 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_OFF);
76
77 hdmi_wp_set_irqstatus(wp, HDMI_IRQ_LINK_CONNECT |
78 HDMI_IRQ_LINK_DISCONNECT);
79
80 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
81 } else if (irqstatus & HDMI_IRQ_LINK_CONNECT) {
82 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_TXON);
83 } else if (irqstatus & HDMI_IRQ_LINK_DISCONNECT) {
84 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
85 }
86
87 return IRQ_HANDLED;
88 }
89
hdmi_init_regulator(void)90 static int hdmi_init_regulator(void)
91 {
92 struct regulator *reg;
93
94 if (hdmi.vdda_reg != NULL)
95 return 0;
96
97 reg = devm_regulator_get(&hdmi.pdev->dev, "vdda");
98
99 if (IS_ERR(reg)) {
100 if (PTR_ERR(reg) != -EPROBE_DEFER)
101 DSSERR("can't get VDDA regulator\n");
102 return PTR_ERR(reg);
103 }
104
105 hdmi.vdda_reg = reg;
106
107 return 0;
108 }
109
hdmi_power_on_core(struct omap_dss_device * dssdev)110 static int hdmi_power_on_core(struct omap_dss_device *dssdev)
111 {
112 int r;
113
114 r = regulator_enable(hdmi.vdda_reg);
115 if (r)
116 return r;
117
118 r = hdmi_runtime_get();
119 if (r)
120 goto err_runtime_get;
121
122 /* Make selection of HDMI in DSS */
123 dss_select_hdmi_venc_clk_source(DSS_HDMI_M_PCLK);
124
125 hdmi.core_enabled = true;
126
127 return 0;
128
129 err_runtime_get:
130 regulator_disable(hdmi.vdda_reg);
131
132 return r;
133 }
134
hdmi_power_off_core(struct omap_dss_device * dssdev)135 static void hdmi_power_off_core(struct omap_dss_device *dssdev)
136 {
137 hdmi.core_enabled = false;
138
139 hdmi_runtime_put();
140 regulator_disable(hdmi.vdda_reg);
141 }
142
hdmi_power_on_full(struct omap_dss_device * dssdev)143 static int hdmi_power_on_full(struct omap_dss_device *dssdev)
144 {
145 int r;
146 struct omap_video_timings *p;
147 struct omap_overlay_manager *mgr = hdmi.output.manager;
148 struct hdmi_wp_data *wp = &hdmi.wp;
149 struct dss_pll_clock_info hdmi_cinfo = { 0 };
150
151 r = hdmi_power_on_core(dssdev);
152 if (r)
153 return r;
154
155 /* disable and clear irqs */
156 hdmi_wp_clear_irqenable(wp, 0xffffffff);
157 hdmi_wp_set_irqstatus(wp, 0xffffffff);
158
159 p = &hdmi.cfg.timings;
160
161 DSSDBG("hdmi_power_on x_res= %d y_res = %d\n", p->x_res, p->y_res);
162
163 hdmi_pll_compute(&hdmi.pll, p->pixelclock, &hdmi_cinfo);
164
165 r = dss_pll_enable(&hdmi.pll.pll);
166 if (r) {
167 DSSERR("Failed to enable PLL\n");
168 goto err_pll_enable;
169 }
170
171 r = dss_pll_set_config(&hdmi.pll.pll, &hdmi_cinfo);
172 if (r) {
173 DSSERR("Failed to configure PLL\n");
174 goto err_pll_cfg;
175 }
176
177 r = hdmi_phy_configure(&hdmi.phy, hdmi_cinfo.clkdco,
178 hdmi_cinfo.clkout[0]);
179 if (r) {
180 DSSDBG("Failed to configure PHY\n");
181 goto err_phy_cfg;
182 }
183
184 r = hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
185 if (r)
186 goto err_phy_pwr;
187
188 hdmi4_configure(&hdmi.core, &hdmi.wp, &hdmi.cfg);
189
190 /* bypass TV gamma table */
191 dispc_enable_gamma_table(0);
192
193 /* tv size */
194 dss_mgr_set_timings(mgr, p);
195
196 r = hdmi_wp_video_start(&hdmi.wp);
197 if (r)
198 goto err_vid_enable;
199
200 r = dss_mgr_enable(mgr);
201 if (r)
202 goto err_mgr_enable;
203
204 hdmi_wp_set_irqenable(wp,
205 HDMI_IRQ_LINK_CONNECT | HDMI_IRQ_LINK_DISCONNECT);
206
207 return 0;
208
209 err_mgr_enable:
210 hdmi_wp_video_stop(&hdmi.wp);
211 err_vid_enable:
212 hdmi_wp_set_phy_pwr(&hdmi.wp, HDMI_PHYPWRCMD_OFF);
213 err_phy_pwr:
214 err_phy_cfg:
215 err_pll_cfg:
216 dss_pll_disable(&hdmi.pll.pll);
217 err_pll_enable:
218 hdmi_power_off_core(dssdev);
219 return -EIO;
220 }
221
hdmi_power_off_full(struct omap_dss_device * dssdev)222 static void hdmi_power_off_full(struct omap_dss_device *dssdev)
223 {
224 struct omap_overlay_manager *mgr = hdmi.output.manager;
225
226 hdmi_wp_clear_irqenable(&hdmi.wp, 0xffffffff);
227
228 dss_mgr_disable(mgr);
229
230 hdmi_wp_video_stop(&hdmi.wp);
231
232 hdmi_wp_set_phy_pwr(&hdmi.wp, HDMI_PHYPWRCMD_OFF);
233
234 dss_pll_disable(&hdmi.pll.pll);
235
236 hdmi_power_off_core(dssdev);
237 }
238
hdmi_display_check_timing(struct omap_dss_device * dssdev,struct omap_video_timings * timings)239 static int hdmi_display_check_timing(struct omap_dss_device *dssdev,
240 struct omap_video_timings *timings)
241 {
242 struct omap_dss_device *out = &hdmi.output;
243
244 if (!dispc_mgr_timings_ok(out->dispc_channel, timings))
245 return -EINVAL;
246
247 return 0;
248 }
249
hdmi_display_set_timing(struct omap_dss_device * dssdev,struct omap_video_timings * timings)250 static void hdmi_display_set_timing(struct omap_dss_device *dssdev,
251 struct omap_video_timings *timings)
252 {
253 mutex_lock(&hdmi.lock);
254
255 hdmi.cfg.timings = *timings;
256
257 dispc_set_tv_pclk(timings->pixelclock);
258
259 mutex_unlock(&hdmi.lock);
260 }
261
hdmi_display_get_timings(struct omap_dss_device * dssdev,struct omap_video_timings * timings)262 static void hdmi_display_get_timings(struct omap_dss_device *dssdev,
263 struct omap_video_timings *timings)
264 {
265 *timings = hdmi.cfg.timings;
266 }
267
hdmi_dump_regs(struct seq_file * s)268 static void hdmi_dump_regs(struct seq_file *s)
269 {
270 mutex_lock(&hdmi.lock);
271
272 if (hdmi_runtime_get()) {
273 mutex_unlock(&hdmi.lock);
274 return;
275 }
276
277 hdmi_wp_dump(&hdmi.wp, s);
278 hdmi_pll_dump(&hdmi.pll, s);
279 hdmi_phy_dump(&hdmi.phy, s);
280 hdmi4_core_dump(&hdmi.core, s);
281
282 hdmi_runtime_put();
283 mutex_unlock(&hdmi.lock);
284 }
285
read_edid(u8 * buf,int len)286 static int read_edid(u8 *buf, int len)
287 {
288 int r;
289
290 mutex_lock(&hdmi.lock);
291
292 r = hdmi_runtime_get();
293 BUG_ON(r);
294
295 r = hdmi4_read_edid(&hdmi.core, buf, len);
296
297 hdmi_runtime_put();
298 mutex_unlock(&hdmi.lock);
299
300 return r;
301 }
302
hdmi_start_audio_stream(struct omap_hdmi * hd)303 static void hdmi_start_audio_stream(struct omap_hdmi *hd)
304 {
305 hdmi_wp_audio_enable(&hd->wp, true);
306 hdmi4_audio_start(&hd->core, &hd->wp);
307 }
308
hdmi_stop_audio_stream(struct omap_hdmi * hd)309 static void hdmi_stop_audio_stream(struct omap_hdmi *hd)
310 {
311 hdmi4_audio_stop(&hd->core, &hd->wp);
312 hdmi_wp_audio_enable(&hd->wp, false);
313 }
314
hdmi_display_enable(struct omap_dss_device * dssdev)315 static int hdmi_display_enable(struct omap_dss_device *dssdev)
316 {
317 struct omap_dss_device *out = &hdmi.output;
318 unsigned long flags;
319 int r = 0;
320
321 DSSDBG("ENTER hdmi_display_enable\n");
322
323 mutex_lock(&hdmi.lock);
324
325 if (out->manager == NULL) {
326 DSSERR("failed to enable display: no output/manager\n");
327 r = -ENODEV;
328 goto err0;
329 }
330
331 r = hdmi_power_on_full(dssdev);
332 if (r) {
333 DSSERR("failed to power on device\n");
334 goto err0;
335 }
336
337 if (hdmi.audio_configured) {
338 r = hdmi4_audio_config(&hdmi.core, &hdmi.wp, &hdmi.audio_config,
339 hdmi.cfg.timings.pixelclock);
340 if (r) {
341 DSSERR("Error restoring audio configuration: %d", r);
342 hdmi.audio_abort_cb(&hdmi.pdev->dev);
343 hdmi.audio_configured = false;
344 }
345 }
346
347 spin_lock_irqsave(&hdmi.audio_playing_lock, flags);
348 if (hdmi.audio_configured && hdmi.audio_playing)
349 hdmi_start_audio_stream(&hdmi);
350 hdmi.display_enabled = true;
351 spin_unlock_irqrestore(&hdmi.audio_playing_lock, flags);
352
353 mutex_unlock(&hdmi.lock);
354 return 0;
355
356 err0:
357 mutex_unlock(&hdmi.lock);
358 return r;
359 }
360
hdmi_display_disable(struct omap_dss_device * dssdev)361 static void hdmi_display_disable(struct omap_dss_device *dssdev)
362 {
363 unsigned long flags;
364
365 DSSDBG("Enter hdmi_display_disable\n");
366
367 mutex_lock(&hdmi.lock);
368
369 spin_lock_irqsave(&hdmi.audio_playing_lock, flags);
370 hdmi_stop_audio_stream(&hdmi);
371 hdmi.display_enabled = false;
372 spin_unlock_irqrestore(&hdmi.audio_playing_lock, flags);
373
374 hdmi_power_off_full(dssdev);
375
376 mutex_unlock(&hdmi.lock);
377 }
378
hdmi_core_enable(struct omap_dss_device * dssdev)379 static int hdmi_core_enable(struct omap_dss_device *dssdev)
380 {
381 int r = 0;
382
383 DSSDBG("ENTER omapdss_hdmi_core_enable\n");
384
385 mutex_lock(&hdmi.lock);
386
387 r = hdmi_power_on_core(dssdev);
388 if (r) {
389 DSSERR("failed to power on device\n");
390 goto err0;
391 }
392
393 mutex_unlock(&hdmi.lock);
394 return 0;
395
396 err0:
397 mutex_unlock(&hdmi.lock);
398 return r;
399 }
400
hdmi_core_disable(struct omap_dss_device * dssdev)401 static void hdmi_core_disable(struct omap_dss_device *dssdev)
402 {
403 DSSDBG("Enter omapdss_hdmi_core_disable\n");
404
405 mutex_lock(&hdmi.lock);
406
407 hdmi_power_off_core(dssdev);
408
409 mutex_unlock(&hdmi.lock);
410 }
411
hdmi_connect(struct omap_dss_device * dssdev,struct omap_dss_device * dst)412 static int hdmi_connect(struct omap_dss_device *dssdev,
413 struct omap_dss_device *dst)
414 {
415 struct omap_overlay_manager *mgr;
416 int r;
417
418 r = hdmi_init_regulator();
419 if (r)
420 return r;
421
422 mgr = omap_dss_get_overlay_manager(dssdev->dispc_channel);
423 if (!mgr)
424 return -ENODEV;
425
426 r = dss_mgr_connect(mgr, dssdev);
427 if (r)
428 return r;
429
430 r = omapdss_output_set_device(dssdev, dst);
431 if (r) {
432 DSSERR("failed to connect output to new device: %s\n",
433 dst->name);
434 dss_mgr_disconnect(mgr, dssdev);
435 return r;
436 }
437
438 return 0;
439 }
440
hdmi_disconnect(struct omap_dss_device * dssdev,struct omap_dss_device * dst)441 static void hdmi_disconnect(struct omap_dss_device *dssdev,
442 struct omap_dss_device *dst)
443 {
444 WARN_ON(dst != dssdev->dst);
445
446 if (dst != dssdev->dst)
447 return;
448
449 omapdss_output_unset_device(dssdev);
450
451 if (dssdev->manager)
452 dss_mgr_disconnect(dssdev->manager, dssdev);
453 }
454
hdmi_read_edid(struct omap_dss_device * dssdev,u8 * edid,int len)455 static int hdmi_read_edid(struct omap_dss_device *dssdev,
456 u8 *edid, int len)
457 {
458 bool need_enable = !hdmi.core_enabled;
459 int r;
460
461 if (need_enable) {
462 r = hdmi_core_enable(dssdev);
463 if (r)
464 return r;
465 }
466
467 r = read_edid(edid, len);
468
469 if (need_enable)
470 hdmi_core_disable(dssdev);
471
472 return r;
473 }
474
hdmi_set_infoframe(struct omap_dss_device * dssdev,const struct hdmi_avi_infoframe * avi)475 static int hdmi_set_infoframe(struct omap_dss_device *dssdev,
476 const struct hdmi_avi_infoframe *avi)
477 {
478 hdmi.cfg.infoframe = *avi;
479 return 0;
480 }
481
hdmi_set_hdmi_mode(struct omap_dss_device * dssdev,bool hdmi_mode)482 static int hdmi_set_hdmi_mode(struct omap_dss_device *dssdev,
483 bool hdmi_mode)
484 {
485 hdmi.cfg.hdmi_dvi_mode = hdmi_mode ? HDMI_HDMI : HDMI_DVI;
486 return 0;
487 }
488
489 static const struct omapdss_hdmi_ops hdmi_ops = {
490 .connect = hdmi_connect,
491 .disconnect = hdmi_disconnect,
492
493 .enable = hdmi_display_enable,
494 .disable = hdmi_display_disable,
495
496 .check_timings = hdmi_display_check_timing,
497 .set_timings = hdmi_display_set_timing,
498 .get_timings = hdmi_display_get_timings,
499
500 .read_edid = hdmi_read_edid,
501 .set_infoframe = hdmi_set_infoframe,
502 .set_hdmi_mode = hdmi_set_hdmi_mode,
503 };
504
hdmi_init_output(struct platform_device * pdev)505 static void hdmi_init_output(struct platform_device *pdev)
506 {
507 struct omap_dss_device *out = &hdmi.output;
508
509 out->dev = &pdev->dev;
510 out->id = OMAP_DSS_OUTPUT_HDMI;
511 out->output_type = OMAP_DISPLAY_TYPE_HDMI;
512 out->name = "hdmi.0";
513 out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT;
514 out->ops.hdmi = &hdmi_ops;
515 out->owner = THIS_MODULE;
516
517 omapdss_register_output(out);
518 }
519
hdmi_uninit_output(struct platform_device * pdev)520 static void hdmi_uninit_output(struct platform_device *pdev)
521 {
522 struct omap_dss_device *out = &hdmi.output;
523
524 omapdss_unregister_output(out);
525 }
526
hdmi_probe_of(struct platform_device * pdev)527 static int hdmi_probe_of(struct platform_device *pdev)
528 {
529 struct device_node *node = pdev->dev.of_node;
530 struct device_node *ep;
531 int r;
532
533 ep = of_graph_get_endpoint_by_regs(node, 0, -1);
534 if (!ep)
535 return 0;
536
537 r = hdmi_parse_lanes_of(pdev, ep, &hdmi.phy);
538 if (r)
539 goto err;
540
541 of_node_put(ep);
542 return 0;
543
544 err:
545 of_node_put(ep);
546 return r;
547 }
548
549 /* Audio callbacks */
hdmi_audio_startup(struct device * dev,void (* abort_cb)(struct device * dev))550 static int hdmi_audio_startup(struct device *dev,
551 void (*abort_cb)(struct device *dev))
552 {
553 struct omap_hdmi *hd = dev_get_drvdata(dev);
554 int ret = 0;
555
556 mutex_lock(&hd->lock);
557
558 if (!hdmi_mode_has_audio(&hd->cfg) || !hd->display_enabled) {
559 ret = -EPERM;
560 goto out;
561 }
562
563 hd->audio_abort_cb = abort_cb;
564
565 out:
566 mutex_unlock(&hd->lock);
567
568 return ret;
569 }
570
hdmi_audio_shutdown(struct device * dev)571 static int hdmi_audio_shutdown(struct device *dev)
572 {
573 struct omap_hdmi *hd = dev_get_drvdata(dev);
574
575 mutex_lock(&hd->lock);
576 hd->audio_abort_cb = NULL;
577 hd->audio_configured = false;
578 hd->audio_playing = false;
579 mutex_unlock(&hd->lock);
580
581 return 0;
582 }
583
hdmi_audio_start(struct device * dev)584 static int hdmi_audio_start(struct device *dev)
585 {
586 struct omap_hdmi *hd = dev_get_drvdata(dev);
587 unsigned long flags;
588
589 WARN_ON(!hdmi_mode_has_audio(&hd->cfg));
590
591 spin_lock_irqsave(&hd->audio_playing_lock, flags);
592
593 if (hd->display_enabled)
594 hdmi_start_audio_stream(hd);
595 hd->audio_playing = true;
596
597 spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
598 return 0;
599 }
600
hdmi_audio_stop(struct device * dev)601 static void hdmi_audio_stop(struct device *dev)
602 {
603 struct omap_hdmi *hd = dev_get_drvdata(dev);
604 unsigned long flags;
605
606 WARN_ON(!hdmi_mode_has_audio(&hd->cfg));
607
608 spin_lock_irqsave(&hd->audio_playing_lock, flags);
609
610 if (hd->display_enabled)
611 hdmi_stop_audio_stream(hd);
612 hd->audio_playing = false;
613
614 spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
615 }
616
hdmi_audio_config(struct device * dev,struct omap_dss_audio * dss_audio)617 static int hdmi_audio_config(struct device *dev,
618 struct omap_dss_audio *dss_audio)
619 {
620 struct omap_hdmi *hd = dev_get_drvdata(dev);
621 int ret;
622
623 mutex_lock(&hd->lock);
624
625 if (!hdmi_mode_has_audio(&hd->cfg) || !hd->display_enabled) {
626 ret = -EPERM;
627 goto out;
628 }
629
630 ret = hdmi4_audio_config(&hd->core, &hd->wp, dss_audio,
631 hd->cfg.timings.pixelclock);
632 if (!ret) {
633 hd->audio_configured = true;
634 hd->audio_config = *dss_audio;
635 }
636 out:
637 mutex_unlock(&hd->lock);
638
639 return ret;
640 }
641
642 static const struct omap_hdmi_audio_ops hdmi_audio_ops = {
643 .audio_startup = hdmi_audio_startup,
644 .audio_shutdown = hdmi_audio_shutdown,
645 .audio_start = hdmi_audio_start,
646 .audio_stop = hdmi_audio_stop,
647 .audio_config = hdmi_audio_config,
648 };
649
hdmi_audio_register(struct device * dev)650 static int hdmi_audio_register(struct device *dev)
651 {
652 struct omap_hdmi_audio_pdata pdata = {
653 .dev = dev,
654 .version = 4,
655 .audio_dma_addr = hdmi_wp_get_audio_dma_addr(&hdmi.wp),
656 .ops = &hdmi_audio_ops,
657 };
658
659 hdmi.audio_pdev = platform_device_register_data(
660 dev, "omap-hdmi-audio", PLATFORM_DEVID_AUTO,
661 &pdata, sizeof(pdata));
662
663 return PTR_ERR_OR_ZERO(hdmi.audio_pdev);
664 }
665
666 /* HDMI HW IP initialisation */
hdmi4_bind(struct device * dev,struct device * master,void * data)667 static int hdmi4_bind(struct device *dev, struct device *master, void *data)
668 {
669 struct platform_device *pdev = to_platform_device(dev);
670 int r;
671 int irq;
672
673 hdmi.pdev = pdev;
674 platform_set_drvdata(pdev, &hdmi);
675
676 mutex_init(&hdmi.lock);
677 spin_lock_init(&hdmi.audio_playing_lock);
678
679 if (pdev->dev.of_node) {
680 r = hdmi_probe_of(pdev);
681 if (r)
682 return r;
683 }
684
685 r = hdmi_wp_init(pdev, &hdmi.wp);
686 if (r)
687 return r;
688
689 r = hdmi_pll_init(pdev, &hdmi.pll, &hdmi.wp);
690 if (r)
691 return r;
692
693 r = hdmi_phy_init(pdev, &hdmi.phy);
694 if (r)
695 goto err;
696
697 r = hdmi4_core_init(pdev, &hdmi.core);
698 if (r)
699 goto err;
700
701 irq = platform_get_irq(pdev, 0);
702 if (irq < 0) {
703 DSSERR("platform_get_irq failed\n");
704 r = -ENODEV;
705 goto err;
706 }
707
708 r = devm_request_threaded_irq(&pdev->dev, irq,
709 NULL, hdmi_irq_handler,
710 IRQF_ONESHOT, "OMAP HDMI", &hdmi.wp);
711 if (r) {
712 DSSERR("HDMI IRQ request failed\n");
713 goto err;
714 }
715
716 pm_runtime_enable(&pdev->dev);
717
718 hdmi_init_output(pdev);
719
720 r = hdmi_audio_register(&pdev->dev);
721 if (r) {
722 DSSERR("Registering HDMI audio failed\n");
723 hdmi_uninit_output(pdev);
724 pm_runtime_disable(&pdev->dev);
725 return r;
726 }
727
728 dss_debugfs_create_file("hdmi", hdmi_dump_regs);
729
730 return 0;
731 err:
732 hdmi_pll_uninit(&hdmi.pll);
733 return r;
734 }
735
hdmi4_unbind(struct device * dev,struct device * master,void * data)736 static void hdmi4_unbind(struct device *dev, struct device *master, void *data)
737 {
738 struct platform_device *pdev = to_platform_device(dev);
739
740 if (hdmi.audio_pdev)
741 platform_device_unregister(hdmi.audio_pdev);
742
743 hdmi_uninit_output(pdev);
744
745 hdmi_pll_uninit(&hdmi.pll);
746
747 pm_runtime_disable(&pdev->dev);
748 }
749
750 static const struct component_ops hdmi4_component_ops = {
751 .bind = hdmi4_bind,
752 .unbind = hdmi4_unbind,
753 };
754
hdmi4_probe(struct platform_device * pdev)755 static int hdmi4_probe(struct platform_device *pdev)
756 {
757 return component_add(&pdev->dev, &hdmi4_component_ops);
758 }
759
hdmi4_remove(struct platform_device * pdev)760 static void hdmi4_remove(struct platform_device *pdev)
761 {
762 component_del(&pdev->dev, &hdmi4_component_ops);
763 }
764
hdmi_runtime_suspend(struct device * dev)765 static int hdmi_runtime_suspend(struct device *dev)
766 {
767 dispc_runtime_put();
768
769 return 0;
770 }
771
hdmi_runtime_resume(struct device * dev)772 static int hdmi_runtime_resume(struct device *dev)
773 {
774 int r;
775
776 r = dispc_runtime_get();
777 if (r < 0)
778 return r;
779
780 return 0;
781 }
782
783 static const struct dev_pm_ops hdmi_pm_ops = {
784 .runtime_suspend = hdmi_runtime_suspend,
785 .runtime_resume = hdmi_runtime_resume,
786 };
787
788 static const struct of_device_id hdmi_of_match[] = {
789 { .compatible = "ti,omap4-hdmi", },
790 {},
791 };
792
793 static struct platform_driver omapdss_hdmihw_driver = {
794 .probe = hdmi4_probe,
795 .remove = hdmi4_remove,
796 .driver = {
797 .name = "omapdss_hdmi",
798 .pm = &hdmi_pm_ops,
799 .of_match_table = hdmi_of_match,
800 .suppress_bind_attrs = true,
801 },
802 };
803
hdmi4_init_platform_driver(void)804 int __init hdmi4_init_platform_driver(void)
805 {
806 return platform_driver_register(&omapdss_hdmihw_driver);
807 }
808
hdmi4_uninit_platform_driver(void)809 void hdmi4_uninit_platform_driver(void)
810 {
811 platform_driver_unregister(&omapdss_hdmihw_driver);
812 }
813