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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 *
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};