Loading...
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * HDMI interface DSS driver for TI's OMAP4 family of SoCs.
4 *
5 * Copyright (C) 2010-2011 Texas Instruments Incorporated - https://www.ti.com/
6 * Authors: Yong Zhi
7 * Mythri pk <mythripk@ti.com>
8 */
9
10#define DSS_SUBSYS_NAME "HDMI"
11
12#include <linux/kernel.h>
13#include <linux/module.h>
14#include <linux/err.h>
15#include <linux/io.h>
16#include <linux/interrupt.h>
17#include <linux/mutex.h>
18#include <linux/delay.h>
19#include <linux/string.h>
20#include <linux/platform_device.h>
21#include <linux/pm_runtime.h>
22#include <linux/clk.h>
23#include <linux/regulator/consumer.h>
24#include <linux/component.h>
25#include <linux/of.h>
26#include <linux/of_graph.h>
27#include <sound/omap-hdmi-audio.h>
28#include <media/cec.h>
29
30#include <drm/drm_atomic.h>
31#include <drm/drm_atomic_state_helper.h>
32#include <drm/drm_edid.h>
33
34#include "omapdss.h"
35#include "hdmi4_core.h"
36#include "hdmi4_cec.h"
37#include "dss.h"
38#include "hdmi.h"
39
40static int hdmi_runtime_get(struct omap_hdmi *hdmi)
41{
42 int r;
43
44 DSSDBG("hdmi_runtime_get\n");
45
46 r = pm_runtime_get_sync(&hdmi->pdev->dev);
47 if (WARN_ON(r < 0)) {
48 pm_runtime_put_noidle(&hdmi->pdev->dev);
49 return r;
50 }
51 return 0;
52}
53
54static void hdmi_runtime_put(struct omap_hdmi *hdmi)
55{
56 int r;
57
58 DSSDBG("hdmi_runtime_put\n");
59
60 r = pm_runtime_put_sync(&hdmi->pdev->dev);
61 WARN_ON(r < 0 && r != -ENOSYS);
62}
63
64static irqreturn_t hdmi_irq_handler(int irq, void *data)
65{
66 struct omap_hdmi *hdmi = data;
67 struct hdmi_wp_data *wp = &hdmi->wp;
68 u32 irqstatus;
69
70 irqstatus = hdmi_wp_get_irqstatus(wp);
71 hdmi_wp_set_irqstatus(wp, irqstatus);
72
73 if ((irqstatus & HDMI_IRQ_LINK_CONNECT) &&
74 irqstatus & HDMI_IRQ_LINK_DISCONNECT) {
75 /*
76 * If we get both connect and disconnect interrupts at the same
77 * time, turn off the PHY, clear interrupts, and restart, which
78 * raises connect interrupt if a cable is connected, or nothing
79 * if cable is not connected.
80 */
81 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_OFF);
82
83 hdmi_wp_set_irqstatus(wp, HDMI_IRQ_LINK_CONNECT |
84 HDMI_IRQ_LINK_DISCONNECT);
85
86 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
87 } else if (irqstatus & HDMI_IRQ_LINK_CONNECT) {
88 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_TXON);
89 } else if (irqstatus & HDMI_IRQ_LINK_DISCONNECT) {
90 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
91 }
92 if (irqstatus & HDMI_IRQ_CORE) {
93 u32 intr4 = hdmi_read_reg(hdmi->core.base, HDMI_CORE_SYS_INTR4);
94
95 hdmi_write_reg(hdmi->core.base, HDMI_CORE_SYS_INTR4, intr4);
96 if (intr4 & 8)
97 hdmi4_cec_irq(&hdmi->core);
98 }
99
100 return IRQ_HANDLED;
101}
102
103static int hdmi_power_on_core(struct omap_hdmi *hdmi)
104{
105 int r;
106
107 if (hdmi->core.core_pwr_cnt++)
108 return 0;
109
110 r = regulator_enable(hdmi->vdda_reg);
111 if (r)
112 goto err_reg_enable;
113
114 r = hdmi_runtime_get(hdmi);
115 if (r)
116 goto err_runtime_get;
117
118 hdmi4_core_powerdown_disable(&hdmi->core);
119
120 /* Make selection of HDMI in DSS */
121 dss_select_hdmi_venc_clk_source(hdmi->dss, DSS_HDMI_M_PCLK);
122
123 hdmi->core_enabled = true;
124
125 return 0;
126
127err_runtime_get:
128 regulator_disable(hdmi->vdda_reg);
129err_reg_enable:
130 hdmi->core.core_pwr_cnt--;
131
132 return r;
133}
134
135static void hdmi_power_off_core(struct omap_hdmi *hdmi)
136{
137 if (--hdmi->core.core_pwr_cnt)
138 return;
139
140 hdmi->core_enabled = false;
141
142 hdmi_runtime_put(hdmi);
143 regulator_disable(hdmi->vdda_reg);
144}
145
146static int hdmi_power_on_full(struct omap_hdmi *hdmi)
147{
148 int r;
149 const struct videomode *vm;
150 struct hdmi_wp_data *wp = &hdmi->wp;
151 struct dss_pll_clock_info hdmi_cinfo = { 0 };
152 unsigned int pc;
153
154 r = hdmi_power_on_core(hdmi);
155 if (r)
156 return r;
157
158 /* disable and clear irqs */
159 hdmi_wp_clear_irqenable(wp, ~HDMI_IRQ_CORE);
160 hdmi_wp_set_irqstatus(wp, ~HDMI_IRQ_CORE);
161
162 vm = &hdmi->cfg.vm;
163
164 DSSDBG("hdmi_power_on hactive= %d vactive = %d\n", vm->hactive,
165 vm->vactive);
166
167 pc = vm->pixelclock;
168 if (vm->flags & DISPLAY_FLAGS_DOUBLECLK)
169 pc *= 2;
170
171 /* DSS_HDMI_TCLK is bitclk / 10 */
172 pc *= 10;
173
174 dss_pll_calc_b(&hdmi->pll.pll, clk_get_rate(hdmi->pll.pll.clkin),
175 pc, &hdmi_cinfo);
176
177 r = dss_pll_enable(&hdmi->pll.pll);
178 if (r) {
179 DSSERR("Failed to enable PLL\n");
180 goto err_pll_enable;
181 }
182
183 r = dss_pll_set_config(&hdmi->pll.pll, &hdmi_cinfo);
184 if (r) {
185 DSSERR("Failed to configure PLL\n");
186 goto err_pll_cfg;
187 }
188
189 r = hdmi_phy_configure(&hdmi->phy, hdmi_cinfo.clkdco,
190 hdmi_cinfo.clkout[0]);
191 if (r) {
192 DSSDBG("Failed to configure PHY\n");
193 goto err_phy_cfg;
194 }
195
196 r = hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
197 if (r)
198 goto err_phy_pwr;
199
200 hdmi4_configure(&hdmi->core, &hdmi->wp, &hdmi->cfg);
201
202 r = dss_mgr_enable(&hdmi->output);
203 if (r)
204 goto err_mgr_enable;
205
206 r = hdmi_wp_video_start(&hdmi->wp);
207 if (r)
208 goto err_vid_enable;
209
210 hdmi_wp_set_irqenable(wp,
211 HDMI_IRQ_LINK_CONNECT | HDMI_IRQ_LINK_DISCONNECT);
212
213 return 0;
214
215err_vid_enable:
216 dss_mgr_disable(&hdmi->output);
217err_mgr_enable:
218 hdmi_wp_set_phy_pwr(&hdmi->wp, HDMI_PHYPWRCMD_OFF);
219err_phy_pwr:
220err_phy_cfg:
221err_pll_cfg:
222 dss_pll_disable(&hdmi->pll.pll);
223err_pll_enable:
224 hdmi_power_off_core(hdmi);
225 return -EIO;
226}
227
228static void hdmi_power_off_full(struct omap_hdmi *hdmi)
229{
230 hdmi_wp_clear_irqenable(&hdmi->wp, ~HDMI_IRQ_CORE);
231
232 hdmi_wp_video_stop(&hdmi->wp);
233
234 dss_mgr_disable(&hdmi->output);
235
236 hdmi_wp_set_phy_pwr(&hdmi->wp, HDMI_PHYPWRCMD_OFF);
237
238 dss_pll_disable(&hdmi->pll.pll);
239
240 hdmi_power_off_core(hdmi);
241}
242
243static int hdmi_dump_regs(struct seq_file *s, void *p)
244{
245 struct omap_hdmi *hdmi = s->private;
246
247 mutex_lock(&hdmi->lock);
248
249 if (hdmi_runtime_get(hdmi)) {
250 mutex_unlock(&hdmi->lock);
251 return 0;
252 }
253
254 hdmi_wp_dump(&hdmi->wp, s);
255 hdmi_pll_dump(&hdmi->pll, s);
256 hdmi_phy_dump(&hdmi->phy, s);
257 hdmi4_core_dump(&hdmi->core, s);
258
259 hdmi_runtime_put(hdmi);
260 mutex_unlock(&hdmi->lock);
261 return 0;
262}
263
264static void hdmi_start_audio_stream(struct omap_hdmi *hd)
265{
266 hdmi_wp_audio_enable(&hd->wp, true);
267 hdmi4_audio_start(&hd->core, &hd->wp);
268}
269
270static void hdmi_stop_audio_stream(struct omap_hdmi *hd)
271{
272 hdmi4_audio_stop(&hd->core, &hd->wp);
273 hdmi_wp_audio_enable(&hd->wp, false);
274}
275
276int hdmi4_core_enable(struct hdmi_core_data *core)
277{
278 struct omap_hdmi *hdmi = container_of(core, struct omap_hdmi, core);
279 int r = 0;
280
281 DSSDBG("ENTER omapdss_hdmi4_core_enable\n");
282
283 mutex_lock(&hdmi->lock);
284
285 r = hdmi_power_on_core(hdmi);
286 if (r) {
287 DSSERR("failed to power on device\n");
288 goto err0;
289 }
290
291 mutex_unlock(&hdmi->lock);
292 return 0;
293
294err0:
295 mutex_unlock(&hdmi->lock);
296 return r;
297}
298
299void hdmi4_core_disable(struct hdmi_core_data *core)
300{
301 struct omap_hdmi *hdmi = container_of(core, struct omap_hdmi, core);
302
303 DSSDBG("Enter omapdss_hdmi4_core_disable\n");
304
305 mutex_lock(&hdmi->lock);
306
307 hdmi_power_off_core(hdmi);
308
309 mutex_unlock(&hdmi->lock);
310}
311
312/* -----------------------------------------------------------------------------
313 * DRM Bridge Operations
314 */
315
316static int hdmi4_bridge_attach(struct drm_bridge *bridge,
317 enum drm_bridge_attach_flags flags)
318{
319 struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge);
320
321 if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR))
322 return -EINVAL;
323
324 return drm_bridge_attach(bridge->encoder, hdmi->output.next_bridge,
325 bridge, flags);
326}
327
328static void hdmi4_bridge_mode_set(struct drm_bridge *bridge,
329 const struct drm_display_mode *mode,
330 const struct drm_display_mode *adjusted_mode)
331{
332 struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge);
333
334 mutex_lock(&hdmi->lock);
335
336 drm_display_mode_to_videomode(adjusted_mode, &hdmi->cfg.vm);
337
338 dispc_set_tv_pclk(hdmi->dss->dispc, adjusted_mode->clock * 1000);
339
340 mutex_unlock(&hdmi->lock);
341}
342
343static void hdmi4_bridge_enable(struct drm_bridge *bridge,
344 struct drm_bridge_state *bridge_state)
345{
346 struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge);
347 struct drm_atomic_state *state = bridge_state->base.state;
348 struct drm_connector_state *conn_state;
349 struct drm_connector *connector;
350 struct drm_crtc_state *crtc_state;
351 unsigned long flags;
352 int ret;
353
354 /*
355 * None of these should fail, as the bridge can't be enabled without a
356 * valid CRTC to connector path with fully populated new states.
357 */
358 connector = drm_atomic_get_new_connector_for_encoder(state,
359 bridge->encoder);
360 if (WARN_ON(!connector))
361 return;
362 conn_state = drm_atomic_get_new_connector_state(state, connector);
363 if (WARN_ON(!conn_state))
364 return;
365 crtc_state = drm_atomic_get_new_crtc_state(state, conn_state->crtc);
366 if (WARN_ON(!crtc_state))
367 return;
368
369 hdmi->cfg.hdmi_dvi_mode = connector->display_info.is_hdmi
370 ? HDMI_HDMI : HDMI_DVI;
371
372 if (connector->display_info.is_hdmi) {
373 const struct drm_display_mode *mode;
374 struct hdmi_avi_infoframe avi;
375
376 mode = &crtc_state->adjusted_mode;
377 ret = drm_hdmi_avi_infoframe_from_display_mode(&avi, connector,
378 mode);
379 if (ret == 0)
380 hdmi->cfg.infoframe = avi;
381 }
382
383 mutex_lock(&hdmi->lock);
384
385 ret = hdmi_power_on_full(hdmi);
386 if (ret) {
387 DSSERR("failed to power on device\n");
388 goto done;
389 }
390
391 if (hdmi->audio_configured) {
392 ret = hdmi4_audio_config(&hdmi->core, &hdmi->wp,
393 &hdmi->audio_config,
394 hdmi->cfg.vm.pixelclock);
395 if (ret) {
396 DSSERR("Error restoring audio configuration: %d", ret);
397 hdmi->audio_abort_cb(&hdmi->pdev->dev);
398 hdmi->audio_configured = false;
399 }
400 }
401
402 spin_lock_irqsave(&hdmi->audio_playing_lock, flags);
403 if (hdmi->audio_configured && hdmi->audio_playing)
404 hdmi_start_audio_stream(hdmi);
405 hdmi->display_enabled = true;
406 spin_unlock_irqrestore(&hdmi->audio_playing_lock, flags);
407
408done:
409 mutex_unlock(&hdmi->lock);
410}
411
412static void hdmi4_bridge_disable(struct drm_bridge *bridge,
413 struct drm_bridge_state *bridge_state)
414{
415 struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge);
416 unsigned long flags;
417
418 mutex_lock(&hdmi->lock);
419
420 spin_lock_irqsave(&hdmi->audio_playing_lock, flags);
421 hdmi_stop_audio_stream(hdmi);
422 hdmi->display_enabled = false;
423 spin_unlock_irqrestore(&hdmi->audio_playing_lock, flags);
424
425 hdmi_power_off_full(hdmi);
426
427 mutex_unlock(&hdmi->lock);
428}
429
430static void hdmi4_bridge_hpd_notify(struct drm_bridge *bridge,
431 enum drm_connector_status status)
432{
433 struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge);
434
435 if (status == connector_status_disconnected)
436 hdmi4_cec_set_phys_addr(&hdmi->core, CEC_PHYS_ADDR_INVALID);
437}
438
439static struct edid *hdmi4_bridge_get_edid(struct drm_bridge *bridge,
440 struct drm_connector *connector)
441{
442 struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge);
443 struct edid *edid = NULL;
444 unsigned int cec_addr;
445 bool need_enable;
446 int r;
447
448 need_enable = hdmi->core_enabled == false;
449
450 if (need_enable) {
451 r = hdmi4_core_enable(&hdmi->core);
452 if (r)
453 return NULL;
454 }
455
456 mutex_lock(&hdmi->lock);
457 r = hdmi_runtime_get(hdmi);
458 BUG_ON(r);
459
460 r = hdmi4_core_ddc_init(&hdmi->core);
461 if (r)
462 goto done;
463
464 edid = drm_do_get_edid(connector, hdmi4_core_ddc_read, &hdmi->core);
465
466done:
467 hdmi_runtime_put(hdmi);
468 mutex_unlock(&hdmi->lock);
469
470 if (edid && edid->extensions) {
471 unsigned int len = (edid->extensions + 1) * EDID_LENGTH;
472
473 cec_addr = cec_get_edid_phys_addr((u8 *)edid, len, NULL);
474 } else {
475 cec_addr = CEC_PHYS_ADDR_INVALID;
476 }
477
478 hdmi4_cec_set_phys_addr(&hdmi->core, cec_addr);
479
480 if (need_enable)
481 hdmi4_core_disable(&hdmi->core);
482
483 return edid;
484}
485
486static const struct drm_bridge_funcs hdmi4_bridge_funcs = {
487 .attach = hdmi4_bridge_attach,
488 .mode_set = hdmi4_bridge_mode_set,
489 .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
490 .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
491 .atomic_reset = drm_atomic_helper_bridge_reset,
492 .atomic_enable = hdmi4_bridge_enable,
493 .atomic_disable = hdmi4_bridge_disable,
494 .hpd_notify = hdmi4_bridge_hpd_notify,
495 .get_edid = hdmi4_bridge_get_edid,
496};
497
498static void hdmi4_bridge_init(struct omap_hdmi *hdmi)
499{
500 hdmi->bridge.funcs = &hdmi4_bridge_funcs;
501 hdmi->bridge.of_node = hdmi->pdev->dev.of_node;
502 hdmi->bridge.ops = DRM_BRIDGE_OP_EDID;
503 hdmi->bridge.type = DRM_MODE_CONNECTOR_HDMIA;
504
505 drm_bridge_add(&hdmi->bridge);
506}
507
508static void hdmi4_bridge_cleanup(struct omap_hdmi *hdmi)
509{
510 drm_bridge_remove(&hdmi->bridge);
511}
512
513/* -----------------------------------------------------------------------------
514 * Audio Callbacks
515 */
516
517static int hdmi_audio_startup(struct device *dev,
518 void (*abort_cb)(struct device *dev))
519{
520 struct omap_hdmi *hd = dev_get_drvdata(dev);
521
522 mutex_lock(&hd->lock);
523
524 WARN_ON(hd->audio_abort_cb != NULL);
525
526 hd->audio_abort_cb = abort_cb;
527
528 mutex_unlock(&hd->lock);
529
530 return 0;
531}
532
533static int hdmi_audio_shutdown(struct device *dev)
534{
535 struct omap_hdmi *hd = dev_get_drvdata(dev);
536
537 mutex_lock(&hd->lock);
538 hd->audio_abort_cb = NULL;
539 hd->audio_configured = false;
540 hd->audio_playing = false;
541 mutex_unlock(&hd->lock);
542
543 return 0;
544}
545
546static int hdmi_audio_start(struct device *dev)
547{
548 struct omap_hdmi *hd = dev_get_drvdata(dev);
549 unsigned long flags;
550
551 spin_lock_irqsave(&hd->audio_playing_lock, flags);
552
553 if (hd->display_enabled) {
554 if (!hdmi_mode_has_audio(&hd->cfg))
555 DSSERR("%s: Video mode does not support audio\n",
556 __func__);
557 hdmi_start_audio_stream(hd);
558 }
559 hd->audio_playing = true;
560
561 spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
562 return 0;
563}
564
565static void hdmi_audio_stop(struct device *dev)
566{
567 struct omap_hdmi *hd = dev_get_drvdata(dev);
568 unsigned long flags;
569
570 WARN_ON(!hdmi_mode_has_audio(&hd->cfg));
571
572 spin_lock_irqsave(&hd->audio_playing_lock, flags);
573
574 if (hd->display_enabled)
575 hdmi_stop_audio_stream(hd);
576 hd->audio_playing = false;
577
578 spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
579}
580
581static int hdmi_audio_config(struct device *dev,
582 struct omap_dss_audio *dss_audio)
583{
584 struct omap_hdmi *hd = dev_get_drvdata(dev);
585 int ret = 0;
586
587 mutex_lock(&hd->lock);
588
589 if (hd->display_enabled) {
590 ret = hdmi4_audio_config(&hd->core, &hd->wp, dss_audio,
591 hd->cfg.vm.pixelclock);
592 if (ret)
593 goto out;
594 }
595
596 hd->audio_configured = true;
597 hd->audio_config = *dss_audio;
598out:
599 mutex_unlock(&hd->lock);
600
601 return ret;
602}
603
604static const struct omap_hdmi_audio_ops hdmi_audio_ops = {
605 .audio_startup = hdmi_audio_startup,
606 .audio_shutdown = hdmi_audio_shutdown,
607 .audio_start = hdmi_audio_start,
608 .audio_stop = hdmi_audio_stop,
609 .audio_config = hdmi_audio_config,
610};
611
612static int hdmi_audio_register(struct omap_hdmi *hdmi)
613{
614 struct omap_hdmi_audio_pdata pdata = {
615 .dev = &hdmi->pdev->dev,
616 .version = 4,
617 .audio_dma_addr = hdmi_wp_get_audio_dma_addr(&hdmi->wp),
618 .ops = &hdmi_audio_ops,
619 };
620
621 hdmi->audio_pdev = platform_device_register_data(
622 &hdmi->pdev->dev, "omap-hdmi-audio", PLATFORM_DEVID_AUTO,
623 &pdata, sizeof(pdata));
624
625 if (IS_ERR(hdmi->audio_pdev))
626 return PTR_ERR(hdmi->audio_pdev);
627
628 return 0;
629}
630
631/* -----------------------------------------------------------------------------
632 * Component Bind & Unbind
633 */
634
635static int hdmi4_bind(struct device *dev, struct device *master, void *data)
636{
637 struct dss_device *dss = dss_get_device(master);
638 struct omap_hdmi *hdmi = dev_get_drvdata(dev);
639 int r;
640
641 hdmi->dss = dss;
642
643 r = hdmi_runtime_get(hdmi);
644 if (r)
645 return r;
646
647 r = hdmi_pll_init(dss, hdmi->pdev, &hdmi->pll, &hdmi->wp);
648 if (r)
649 goto err_runtime_put;
650
651 r = hdmi4_cec_init(hdmi->pdev, &hdmi->core, &hdmi->wp);
652 if (r)
653 goto err_pll_uninit;
654
655 r = hdmi_audio_register(hdmi);
656 if (r) {
657 DSSERR("Registering HDMI audio failed\n");
658 goto err_cec_uninit;
659 }
660
661 hdmi->debugfs = dss_debugfs_create_file(dss, "hdmi", hdmi_dump_regs,
662 hdmi);
663
664 hdmi_runtime_put(hdmi);
665
666 return 0;
667
668err_cec_uninit:
669 hdmi4_cec_uninit(&hdmi->core);
670err_pll_uninit:
671 hdmi_pll_uninit(&hdmi->pll);
672err_runtime_put:
673 hdmi_runtime_put(hdmi);
674 return r;
675}
676
677static void hdmi4_unbind(struct device *dev, struct device *master, void *data)
678{
679 struct omap_hdmi *hdmi = dev_get_drvdata(dev);
680
681 dss_debugfs_remove_file(hdmi->debugfs);
682
683 if (hdmi->audio_pdev)
684 platform_device_unregister(hdmi->audio_pdev);
685
686 hdmi4_cec_uninit(&hdmi->core);
687 hdmi_pll_uninit(&hdmi->pll);
688}
689
690static const struct component_ops hdmi4_component_ops = {
691 .bind = hdmi4_bind,
692 .unbind = hdmi4_unbind,
693};
694
695/* -----------------------------------------------------------------------------
696 * Probe & Remove, Suspend & Resume
697 */
698
699static int hdmi4_init_output(struct omap_hdmi *hdmi)
700{
701 struct omap_dss_device *out = &hdmi->output;
702 int r;
703
704 hdmi4_bridge_init(hdmi);
705
706 out->dev = &hdmi->pdev->dev;
707 out->id = OMAP_DSS_OUTPUT_HDMI;
708 out->type = OMAP_DISPLAY_TYPE_HDMI;
709 out->name = "hdmi.0";
710 out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT;
711 out->of_port = 0;
712
713 r = omapdss_device_init_output(out, &hdmi->bridge);
714 if (r < 0) {
715 hdmi4_bridge_cleanup(hdmi);
716 return r;
717 }
718
719 omapdss_device_register(out);
720
721 return 0;
722}
723
724static void hdmi4_uninit_output(struct omap_hdmi *hdmi)
725{
726 struct omap_dss_device *out = &hdmi->output;
727
728 omapdss_device_unregister(out);
729 omapdss_device_cleanup_output(out);
730
731 hdmi4_bridge_cleanup(hdmi);
732}
733
734static int hdmi4_probe_of(struct omap_hdmi *hdmi)
735{
736 struct platform_device *pdev = hdmi->pdev;
737 struct device_node *node = pdev->dev.of_node;
738 struct device_node *ep;
739 int r;
740
741 ep = of_graph_get_endpoint_by_regs(node, 0, 0);
742 if (!ep)
743 return 0;
744
745 r = hdmi_parse_lanes_of(pdev, ep, &hdmi->phy);
746 of_node_put(ep);
747 return r;
748}
749
750static int hdmi4_probe(struct platform_device *pdev)
751{
752 struct omap_hdmi *hdmi;
753 int irq;
754 int r;
755
756 hdmi = kzalloc(sizeof(*hdmi), GFP_KERNEL);
757 if (!hdmi)
758 return -ENOMEM;
759
760 hdmi->pdev = pdev;
761
762 dev_set_drvdata(&pdev->dev, hdmi);
763
764 mutex_init(&hdmi->lock);
765 spin_lock_init(&hdmi->audio_playing_lock);
766
767 r = hdmi4_probe_of(hdmi);
768 if (r)
769 goto err_free;
770
771 r = hdmi_wp_init(pdev, &hdmi->wp, 4);
772 if (r)
773 goto err_free;
774
775 r = hdmi_phy_init(pdev, &hdmi->phy, 4);
776 if (r)
777 goto err_free;
778
779 r = hdmi4_core_init(pdev, &hdmi->core);
780 if (r)
781 goto err_free;
782
783 irq = platform_get_irq(pdev, 0);
784 if (irq < 0) {
785 DSSERR("platform_get_irq failed\n");
786 r = -ENODEV;
787 goto err_free;
788 }
789
790 r = devm_request_threaded_irq(&pdev->dev, irq,
791 NULL, hdmi_irq_handler,
792 IRQF_ONESHOT, "OMAP HDMI", hdmi);
793 if (r) {
794 DSSERR("HDMI IRQ request failed\n");
795 goto err_free;
796 }
797
798 hdmi->vdda_reg = devm_regulator_get(&pdev->dev, "vdda");
799 if (IS_ERR(hdmi->vdda_reg)) {
800 r = PTR_ERR(hdmi->vdda_reg);
801 if (r != -EPROBE_DEFER)
802 DSSERR("can't get VDDA regulator\n");
803 goto err_free;
804 }
805
806 pm_runtime_enable(&pdev->dev);
807
808 r = hdmi4_init_output(hdmi);
809 if (r)
810 goto err_pm_disable;
811
812 r = component_add(&pdev->dev, &hdmi4_component_ops);
813 if (r)
814 goto err_uninit_output;
815
816 return 0;
817
818err_uninit_output:
819 hdmi4_uninit_output(hdmi);
820err_pm_disable:
821 pm_runtime_disable(&pdev->dev);
822err_free:
823 kfree(hdmi);
824 return r;
825}
826
827static int hdmi4_remove(struct platform_device *pdev)
828{
829 struct omap_hdmi *hdmi = platform_get_drvdata(pdev);
830
831 component_del(&pdev->dev, &hdmi4_component_ops);
832
833 hdmi4_uninit_output(hdmi);
834
835 pm_runtime_disable(&pdev->dev);
836
837 kfree(hdmi);
838 return 0;
839}
840
841static const struct of_device_id hdmi_of_match[] = {
842 { .compatible = "ti,omap4-hdmi", },
843 {},
844};
845
846struct platform_driver omapdss_hdmi4hw_driver = {
847 .probe = hdmi4_probe,
848 .remove = hdmi4_remove,
849 .driver = {
850 .name = "omapdss_hdmi",
851 .of_match_table = hdmi_of_match,
852 .suppress_bind_attrs = true,
853 },
854};
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}