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
hdmi_runtime_get(struct omap_hdmi * hdmi)48 static 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
hdmi_runtime_put(struct omap_hdmi * hdmi)62 static 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
hdmi_irq_handler(int irq,void * data)72 static 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
hdmi_init_regulator(struct omap_hdmi * hdmi)111 static 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
hdmi_power_on_core(struct omap_hdmi * hdmi)131 static 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
155 err_runtime_get:
156 regulator_disable(hdmi->vdda_reg);
157 err_reg_enable:
158 hdmi->core.core_pwr_cnt--;
159
160 return r;
161 }
162
hdmi_power_off_core(struct omap_hdmi * hdmi)163 static 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
hdmi_power_on_full(struct omap_hdmi * hdmi)174 static 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
246 err_vid_enable:
247 dss_mgr_disable(&hdmi->output);
248 err_mgr_enable:
249 hdmi_wp_set_phy_pwr(&hdmi->wp, HDMI_PHYPWRCMD_OFF);
250 err_phy_pwr:
251 err_phy_cfg:
252 err_pll_cfg:
253 dss_pll_disable(&hdmi->pll.pll);
254 err_pll_enable:
255 hdmi_power_off_core(hdmi);
256 return -EIO;
257 }
258
hdmi_power_off_full(struct omap_hdmi * hdmi)259 static 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
hdmi_display_check_timing(struct omap_dss_device * dssdev,struct videomode * vm)274 static 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
hdmi_display_set_timing(struct omap_dss_device * dssdev,struct videomode * vm)285 static 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
hdmi_display_get_timings(struct omap_dss_device * dssdev,struct videomode * vm)299 static 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
hdmi_dump_regs(struct seq_file * s,void * p)307 static 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
read_edid(struct omap_hdmi * hdmi,u8 * buf,int len)328 static 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
hdmi_start_audio_stream(struct omap_hdmi * hd)345 static 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
hdmi_stop_audio_stream(struct omap_hdmi * hd)351 static 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
hdmi_display_enable(struct omap_dss_device * dssdev)357 static 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
399 err0:
400 mutex_unlock(&hdmi->lock);
401 return r;
402 }
403
hdmi_display_disable(struct omap_dss_device * dssdev)404 static 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
hdmi4_core_enable(struct hdmi_core_data * core)423 int 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
441 err0:
442 mutex_unlock(&hdmi->lock);
443 return r;
444 }
445
hdmi4_core_disable(struct hdmi_core_data * core)446 void 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
hdmi_connect(struct omap_dss_device * dssdev,struct omap_dss_device * dst)459 static 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
hdmi_disconnect(struct omap_dss_device * dssdev,struct omap_dss_device * dst)484 static 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
hdmi_read_edid(struct omap_dss_device * dssdev,u8 * edid,int len)499 static 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
hdmi_lost_hotplug(struct omap_dss_device * dssdev)526 static 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
hdmi_set_infoframe(struct omap_dss_device * dssdev,const struct hdmi_avi_infoframe * avi)533 static 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
hdmi_set_hdmi_mode(struct omap_dss_device * dssdev,bool hdmi_mode)542 static 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
551 static 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
hdmi_init_output(struct omap_hdmi * hdmi)568 static 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
hdmi_uninit_output(struct omap_hdmi * hdmi)583 static 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
hdmi_probe_of(struct omap_hdmi * hdmi)590 static 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
608 err:
609 of_node_put(ep);
610 return r;
611 }
612
613 /* Audio callbacks */
hdmi_audio_startup(struct device * dev,void (* abort_cb)(struct device * dev))614 static 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
hdmi_audio_shutdown(struct device * dev)630 static 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
hdmi_audio_start(struct device * dev)643 static 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
hdmi_audio_stop(struct device * dev)662 static 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
hdmi_audio_config(struct device * dev,struct omap_dss_audio * dss_audio)678 static 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;
695 out:
696 mutex_unlock(&hd->lock);
697
698 return ret;
699 }
700
701 static 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
hdmi_audio_register(struct omap_hdmi * hdmi)709 static 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 */
hdmi4_bind(struct device * dev,struct device * master,void * data)729 static 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
804 err_pll:
805 hdmi_pll_uninit(&hdmi->pll);
806 err_free:
807 kfree(hdmi);
808 return r;
809 }
810
hdmi4_unbind(struct device * dev,struct device * master,void * data)811 static 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
831 static const struct component_ops hdmi4_component_ops = {
832 .bind = hdmi4_bind,
833 .unbind = hdmi4_unbind,
834 };
835
hdmi4_probe(struct platform_device * pdev)836 static int hdmi4_probe(struct platform_device *pdev)
837 {
838 return component_add(&pdev->dev, &hdmi4_component_ops);
839 }
840
hdmi4_remove(struct platform_device * pdev)841 static int hdmi4_remove(struct platform_device *pdev)
842 {
843 component_del(&pdev->dev, &hdmi4_component_ops);
844 return 0;
845 }
846
hdmi_runtime_suspend(struct device * dev)847 static 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
hdmi_runtime_resume(struct device * dev)856 static 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
868 static const struct dev_pm_ops hdmi_pm_ops = {
869 .runtime_suspend = hdmi_runtime_suspend,
870 .runtime_resume = hdmi_runtime_resume,
871 };
872
873 static const struct of_device_id hdmi_of_match[] = {
874 { .compatible = "ti,omap4-hdmi", },
875 {},
876 };
877
878 struct 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 };
888
