1 /*
2 * HDMI driver for OMAP5
3 *
4 * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com/
5 *
6 * Authors:
7 * Yong Zhi
8 * Mythri pk
9 * Archit Taneja <archit@ti.com>
10 * Tomi Valkeinen <tomi.valkeinen@ti.com>
11 *
12 * This program is free software; you can redistribute it and/or modify it
13 * under the terms of the GNU General Public License version 2 as published by
14 * the Free Software Foundation.
15 *
16 * This program is distributed in the hope that it will be useful, but WITHOUT
17 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
18 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
19 * more details.
20 *
21 * You should have received a copy of the GNU General Public License along with
22 * this program. If not, see <http://www.gnu.org/licenses/>.
23 */
24
25 #define DSS_SUBSYS_NAME "HDMI"
26
27 #include <linux/kernel.h>
28 #include <linux/module.h>
29 #include <linux/err.h>
30 #include <linux/io.h>
31 #include <linux/interrupt.h>
32 #include <linux/mutex.h>
33 #include <linux/delay.h>
34 #include <linux/string.h>
35 #include <linux/platform_device.h>
36 #include <linux/pm_runtime.h>
37 #include <linux/clk.h>
38 #include <linux/gpio.h>
39 #include <linux/regulator/consumer.h>
40 #include <linux/component.h>
41 #include <linux/of.h>
42 #include <linux/of_graph.h>
43 #include <sound/omap-hdmi-audio.h>
44
45 #include "omapdss.h"
46 #include "hdmi5_core.h"
47 #include "dss.h"
48
hdmi_runtime_get(struct omap_hdmi * hdmi)49 static int hdmi_runtime_get(struct omap_hdmi *hdmi)
50 {
51 int r;
52
53 DSSDBG("hdmi_runtime_get\n");
54
55 r = pm_runtime_get_sync(&hdmi->pdev->dev);
56 WARN_ON(r < 0);
57 if (r < 0)
58 return r;
59
60 return 0;
61 }
62
hdmi_runtime_put(struct omap_hdmi * hdmi)63 static void hdmi_runtime_put(struct omap_hdmi *hdmi)
64 {
65 int r;
66
67 DSSDBG("hdmi_runtime_put\n");
68
69 r = pm_runtime_put_sync(&hdmi->pdev->dev);
70 WARN_ON(r < 0 && r != -ENOSYS);
71 }
72
hdmi_irq_handler(int irq,void * data)73 static irqreturn_t hdmi_irq_handler(int irq, void *data)
74 {
75 struct omap_hdmi *hdmi = data;
76 struct hdmi_wp_data *wp = &hdmi->wp;
77 u32 irqstatus;
78
79 irqstatus = hdmi_wp_get_irqstatus(wp);
80 hdmi_wp_set_irqstatus(wp, irqstatus);
81
82 if ((irqstatus & HDMI_IRQ_LINK_CONNECT) &&
83 irqstatus & HDMI_IRQ_LINK_DISCONNECT) {
84 u32 v;
85 /*
86 * If we get both connect and disconnect interrupts at the same
87 * time, turn off the PHY, clear interrupts, and restart, which
88 * raises connect interrupt if a cable is connected, or nothing
89 * if cable is not connected.
90 */
91
92 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_OFF);
93
94 /*
95 * We always get bogus CONNECT & DISCONNECT interrupts when
96 * setting the PHY to LDOON. To ignore those, we force the RXDET
97 * line to 0 until the PHY power state has been changed.
98 */
99 v = hdmi_read_reg(hdmi->phy.base, HDMI_TXPHY_PAD_CFG_CTRL);
100 v = FLD_MOD(v, 1, 15, 15); /* FORCE_RXDET_HIGH */
101 v = FLD_MOD(v, 0, 14, 7); /* RXDET_LINE */
102 hdmi_write_reg(hdmi->phy.base, HDMI_TXPHY_PAD_CFG_CTRL, v);
103
104 hdmi_wp_set_irqstatus(wp, HDMI_IRQ_LINK_CONNECT |
105 HDMI_IRQ_LINK_DISCONNECT);
106
107 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
108
109 REG_FLD_MOD(hdmi->phy.base, HDMI_TXPHY_PAD_CFG_CTRL, 0, 15, 15);
110
111 } else if (irqstatus & HDMI_IRQ_LINK_CONNECT) {
112 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_TXON);
113 } else if (irqstatus & HDMI_IRQ_LINK_DISCONNECT) {
114 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
115 }
116
117 return IRQ_HANDLED;
118 }
119
hdmi_init_regulator(struct omap_hdmi * hdmi)120 static int hdmi_init_regulator(struct omap_hdmi *hdmi)
121 {
122 struct regulator *reg;
123
124 if (hdmi->vdda_reg != NULL)
125 return 0;
126
127 reg = devm_regulator_get(&hdmi->pdev->dev, "vdda");
128 if (IS_ERR(reg)) {
129 DSSERR("can't get VDDA regulator\n");
130 return PTR_ERR(reg);
131 }
132
133 hdmi->vdda_reg = reg;
134
135 return 0;
136 }
137
hdmi_power_on_core(struct omap_hdmi * hdmi)138 static int hdmi_power_on_core(struct omap_hdmi *hdmi)
139 {
140 int r;
141
142 r = regulator_enable(hdmi->vdda_reg);
143 if (r)
144 return r;
145
146 r = hdmi_runtime_get(hdmi);
147 if (r)
148 goto err_runtime_get;
149
150 /* Make selection of HDMI in DSS */
151 dss_select_hdmi_venc_clk_source(hdmi->dss, DSS_HDMI_M_PCLK);
152
153 hdmi->core_enabled = true;
154
155 return 0;
156
157 err_runtime_get:
158 regulator_disable(hdmi->vdda_reg);
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 hdmi->core_enabled = false;
166
167 hdmi_runtime_put(hdmi);
168 regulator_disable(hdmi->vdda_reg);
169 }
170
hdmi_power_on_full(struct omap_hdmi * hdmi)171 static int hdmi_power_on_full(struct omap_hdmi *hdmi)
172 {
173 int r;
174 struct videomode *vm;
175 struct dss_pll_clock_info hdmi_cinfo = { 0 };
176 unsigned int pc;
177
178 r = hdmi_power_on_core(hdmi);
179 if (r)
180 return r;
181
182 vm = &hdmi->cfg.vm;
183
184 DSSDBG("hdmi_power_on hactive= %d vactive = %d\n", vm->hactive,
185 vm->vactive);
186
187 pc = vm->pixelclock;
188 if (vm->flags & DISPLAY_FLAGS_DOUBLECLK)
189 pc *= 2;
190
191 /* DSS_HDMI_TCLK is bitclk / 10 */
192 pc *= 10;
193
194 dss_pll_calc_b(&hdmi->pll.pll, clk_get_rate(hdmi->pll.pll.clkin),
195 pc, &hdmi_cinfo);
196
197 /* disable and clear irqs */
198 hdmi_wp_clear_irqenable(&hdmi->wp, 0xffffffff);
199 hdmi_wp_set_irqstatus(&hdmi->wp,
200 hdmi_wp_get_irqstatus(&hdmi->wp));
201
202 r = dss_pll_enable(&hdmi->pll.pll);
203 if (r) {
204 DSSERR("Failed to enable PLL\n");
205 goto err_pll_enable;
206 }
207
208 r = dss_pll_set_config(&hdmi->pll.pll, &hdmi_cinfo);
209 if (r) {
210 DSSERR("Failed to configure PLL\n");
211 goto err_pll_cfg;
212 }
213
214 r = hdmi_phy_configure(&hdmi->phy, hdmi_cinfo.clkdco,
215 hdmi_cinfo.clkout[0]);
216 if (r) {
217 DSSDBG("Failed to start PHY\n");
218 goto err_phy_cfg;
219 }
220
221 r = hdmi_wp_set_phy_pwr(&hdmi->wp, HDMI_PHYPWRCMD_LDOON);
222 if (r)
223 goto err_phy_pwr;
224
225 hdmi5_configure(&hdmi->core, &hdmi->wp, &hdmi->cfg);
226
227 /* tv size */
228 dss_mgr_set_timings(&hdmi->output, vm);
229
230 r = dss_mgr_enable(&hdmi->output);
231 if (r)
232 goto err_mgr_enable;
233
234 r = hdmi_wp_video_start(&hdmi->wp);
235 if (r)
236 goto err_vid_enable;
237
238 hdmi_wp_set_irqenable(&hdmi->wp,
239 HDMI_IRQ_LINK_CONNECT | HDMI_IRQ_LINK_DISCONNECT);
240
241 return 0;
242
243 err_vid_enable:
244 dss_mgr_disable(&hdmi->output);
245 err_mgr_enable:
246 hdmi_wp_set_phy_pwr(&hdmi->wp, HDMI_PHYPWRCMD_OFF);
247 err_phy_pwr:
248 err_phy_cfg:
249 err_pll_cfg:
250 dss_pll_disable(&hdmi->pll.pll);
251 err_pll_enable:
252 hdmi_power_off_core(hdmi);
253 return -EIO;
254 }
255
hdmi_power_off_full(struct omap_hdmi * hdmi)256 static void hdmi_power_off_full(struct omap_hdmi *hdmi)
257 {
258 hdmi_wp_clear_irqenable(&hdmi->wp, 0xffffffff);
259
260 hdmi_wp_video_stop(&hdmi->wp);
261
262 dss_mgr_disable(&hdmi->output);
263
264 hdmi_wp_set_phy_pwr(&hdmi->wp, HDMI_PHYPWRCMD_OFF);
265
266 dss_pll_disable(&hdmi->pll.pll);
267
268 hdmi_power_off_core(hdmi);
269 }
270
hdmi_display_check_timing(struct omap_dss_device * dssdev,struct videomode * vm)271 static int hdmi_display_check_timing(struct omap_dss_device *dssdev,
272 struct videomode *vm)
273 {
274 struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev);
275
276 if (!dispc_mgr_timings_ok(hdmi->dss->dispc, dssdev->dispc_channel, vm))
277 return -EINVAL;
278
279 return 0;
280 }
281
hdmi_display_set_timing(struct omap_dss_device * dssdev,struct videomode * vm)282 static void hdmi_display_set_timing(struct omap_dss_device *dssdev,
283 struct videomode *vm)
284 {
285 struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev);
286
287 mutex_lock(&hdmi->lock);
288
289 hdmi->cfg.vm = *vm;
290
291 dispc_set_tv_pclk(hdmi->dss->dispc, vm->pixelclock);
292
293 mutex_unlock(&hdmi->lock);
294 }
295
hdmi_display_get_timings(struct omap_dss_device * dssdev,struct videomode * vm)296 static void hdmi_display_get_timings(struct omap_dss_device *dssdev,
297 struct videomode *vm)
298 {
299 struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev);
300
301 *vm = hdmi->cfg.vm;
302 }
303
hdmi_dump_regs(struct seq_file * s,void * p)304 static int hdmi_dump_regs(struct seq_file *s, void *p)
305 {
306 struct omap_hdmi *hdmi = s->private;
307
308 mutex_lock(&hdmi->lock);
309
310 if (hdmi_runtime_get(hdmi)) {
311 mutex_unlock(&hdmi->lock);
312 return 0;
313 }
314
315 hdmi_wp_dump(&hdmi->wp, s);
316 hdmi_pll_dump(&hdmi->pll, s);
317 hdmi_phy_dump(&hdmi->phy, s);
318 hdmi5_core_dump(&hdmi->core, s);
319
320 hdmi_runtime_put(hdmi);
321 mutex_unlock(&hdmi->lock);
322 return 0;
323 }
324
read_edid(struct omap_hdmi * hdmi,u8 * buf,int len)325 static int read_edid(struct omap_hdmi *hdmi, u8 *buf, int len)
326 {
327 int r;
328 int idlemode;
329
330 mutex_lock(&hdmi->lock);
331
332 r = hdmi_runtime_get(hdmi);
333 BUG_ON(r);
334
335 idlemode = REG_GET(hdmi->wp.base, HDMI_WP_SYSCONFIG, 3, 2);
336 /* No-idle mode */
337 REG_FLD_MOD(hdmi->wp.base, HDMI_WP_SYSCONFIG, 1, 3, 2);
338
339 r = hdmi5_read_edid(&hdmi->core, buf, len);
340
341 REG_FLD_MOD(hdmi->wp.base, HDMI_WP_SYSCONFIG, idlemode, 3, 2);
342
343 hdmi_runtime_put(hdmi);
344 mutex_unlock(&hdmi->lock);
345
346 return r;
347 }
348
hdmi_start_audio_stream(struct omap_hdmi * hd)349 static void hdmi_start_audio_stream(struct omap_hdmi *hd)
350 {
351 REG_FLD_MOD(hd->wp.base, HDMI_WP_SYSCONFIG, 1, 3, 2);
352 hdmi_wp_audio_enable(&hd->wp, true);
353 hdmi_wp_audio_core_req_enable(&hd->wp, true);
354 }
355
hdmi_stop_audio_stream(struct omap_hdmi * hd)356 static void hdmi_stop_audio_stream(struct omap_hdmi *hd)
357 {
358 hdmi_wp_audio_core_req_enable(&hd->wp, false);
359 hdmi_wp_audio_enable(&hd->wp, false);
360 REG_FLD_MOD(hd->wp.base, HDMI_WP_SYSCONFIG, hd->wp_idlemode, 3, 2);
361 }
362
hdmi_display_enable(struct omap_dss_device * dssdev)363 static int hdmi_display_enable(struct omap_dss_device *dssdev)
364 {
365 struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev);
366 unsigned long flags;
367 int r = 0;
368
369 DSSDBG("ENTER hdmi_display_enable\n");
370
371 mutex_lock(&hdmi->lock);
372
373 if (!dssdev->dispc_channel_connected) {
374 DSSERR("failed to enable display: no output/manager\n");
375 r = -ENODEV;
376 goto err0;
377 }
378
379 r = hdmi_power_on_full(hdmi);
380 if (r) {
381 DSSERR("failed to power on device\n");
382 goto err0;
383 }
384
385 if (hdmi->audio_configured) {
386 r = hdmi5_audio_config(&hdmi->core, &hdmi->wp,
387 &hdmi->audio_config,
388 hdmi->cfg.vm.pixelclock);
389 if (r) {
390 DSSERR("Error restoring audio configuration: %d", r);
391 hdmi->audio_abort_cb(&hdmi->pdev->dev);
392 hdmi->audio_configured = false;
393 }
394 }
395
396 spin_lock_irqsave(&hdmi->audio_playing_lock, flags);
397 if (hdmi->audio_configured && hdmi->audio_playing)
398 hdmi_start_audio_stream(hdmi);
399 hdmi->display_enabled = true;
400 spin_unlock_irqrestore(&hdmi->audio_playing_lock, flags);
401
402 mutex_unlock(&hdmi->lock);
403 return 0;
404
405 err0:
406 mutex_unlock(&hdmi->lock);
407 return r;
408 }
409
hdmi_display_disable(struct omap_dss_device * dssdev)410 static void hdmi_display_disable(struct omap_dss_device *dssdev)
411 {
412 struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev);
413 unsigned long flags;
414
415 DSSDBG("Enter hdmi_display_disable\n");
416
417 mutex_lock(&hdmi->lock);
418
419 spin_lock_irqsave(&hdmi->audio_playing_lock, flags);
420 hdmi_stop_audio_stream(hdmi);
421 hdmi->display_enabled = false;
422 spin_unlock_irqrestore(&hdmi->audio_playing_lock, flags);
423
424 hdmi_power_off_full(hdmi);
425
426 mutex_unlock(&hdmi->lock);
427 }
428
hdmi_core_enable(struct omap_hdmi * hdmi)429 static int hdmi_core_enable(struct omap_hdmi *hdmi)
430 {
431 int r = 0;
432
433 DSSDBG("ENTER omapdss_hdmi_core_enable\n");
434
435 mutex_lock(&hdmi->lock);
436
437 r = hdmi_power_on_core(hdmi);
438 if (r) {
439 DSSERR("failed to power on device\n");
440 goto err0;
441 }
442
443 mutex_unlock(&hdmi->lock);
444 return 0;
445
446 err0:
447 mutex_unlock(&hdmi->lock);
448 return r;
449 }
450
hdmi_core_disable(struct omap_hdmi * hdmi)451 static void hdmi_core_disable(struct omap_hdmi *hdmi)
452 {
453 DSSDBG("Enter omapdss_hdmi_core_disable\n");
454
455 mutex_lock(&hdmi->lock);
456
457 hdmi_power_off_core(hdmi);
458
459 mutex_unlock(&hdmi->lock);
460 }
461
hdmi_connect(struct omap_dss_device * dssdev,struct omap_dss_device * dst)462 static int hdmi_connect(struct omap_dss_device *dssdev,
463 struct omap_dss_device *dst)
464 {
465 struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev);
466 int r;
467
468 r = hdmi_init_regulator(hdmi);
469 if (r)
470 return r;
471
472 r = dss_mgr_connect(&hdmi->output, dssdev);
473 if (r)
474 return r;
475
476 r = omapdss_output_set_device(dssdev, dst);
477 if (r) {
478 DSSERR("failed to connect output to new device: %s\n",
479 dst->name);
480 dss_mgr_disconnect(&hdmi->output, dssdev);
481 return r;
482 }
483
484 return 0;
485 }
486
hdmi_disconnect(struct omap_dss_device * dssdev,struct omap_dss_device * dst)487 static void hdmi_disconnect(struct omap_dss_device *dssdev,
488 struct omap_dss_device *dst)
489 {
490 struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev);
491
492 WARN_ON(dst != dssdev->dst);
493
494 if (dst != dssdev->dst)
495 return;
496
497 omapdss_output_unset_device(dssdev);
498
499 dss_mgr_disconnect(&hdmi->output, dssdev);
500 }
501
hdmi_read_edid(struct omap_dss_device * dssdev,u8 * edid,int len)502 static int hdmi_read_edid(struct omap_dss_device *dssdev,
503 u8 *edid, int len)
504 {
505 struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev);
506 bool need_enable;
507 int r;
508
509 need_enable = hdmi->core_enabled == false;
510
511 if (need_enable) {
512 r = hdmi_core_enable(hdmi);
513 if (r)
514 return r;
515 }
516
517 r = read_edid(hdmi, edid, len);
518
519 if (need_enable)
520 hdmi_core_disable(hdmi);
521
522 return r;
523 }
524
hdmi_set_infoframe(struct omap_dss_device * dssdev,const struct hdmi_avi_infoframe * avi)525 static int hdmi_set_infoframe(struct omap_dss_device *dssdev,
526 const struct hdmi_avi_infoframe *avi)
527 {
528 struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev);
529
530 hdmi->cfg.infoframe = *avi;
531 return 0;
532 }
533
hdmi_set_hdmi_mode(struct omap_dss_device * dssdev,bool hdmi_mode)534 static int hdmi_set_hdmi_mode(struct omap_dss_device *dssdev,
535 bool hdmi_mode)
536 {
537 struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev);
538
539 hdmi->cfg.hdmi_dvi_mode = hdmi_mode ? HDMI_HDMI : HDMI_DVI;
540 return 0;
541 }
542
543 static const struct omapdss_hdmi_ops hdmi_ops = {
544 .connect = hdmi_connect,
545 .disconnect = hdmi_disconnect,
546
547 .enable = hdmi_display_enable,
548 .disable = hdmi_display_disable,
549
550 .check_timings = hdmi_display_check_timing,
551 .set_timings = hdmi_display_set_timing,
552 .get_timings = hdmi_display_get_timings,
553
554 .read_edid = hdmi_read_edid,
555 .set_infoframe = hdmi_set_infoframe,
556 .set_hdmi_mode = hdmi_set_hdmi_mode,
557 };
558
hdmi_init_output(struct omap_hdmi * hdmi)559 static void hdmi_init_output(struct omap_hdmi *hdmi)
560 {
561 struct omap_dss_device *out = &hdmi->output;
562
563 out->dev = &hdmi->pdev->dev;
564 out->id = OMAP_DSS_OUTPUT_HDMI;
565 out->output_type = OMAP_DISPLAY_TYPE_HDMI;
566 out->name = "hdmi.0";
567 out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT;
568 out->ops.hdmi = &hdmi_ops;
569 out->owner = THIS_MODULE;
570
571 omapdss_register_output(out);
572 }
573
hdmi_uninit_output(struct omap_hdmi * hdmi)574 static void hdmi_uninit_output(struct omap_hdmi *hdmi)
575 {
576 struct omap_dss_device *out = &hdmi->output;
577
578 omapdss_unregister_output(out);
579 }
580
hdmi_probe_of(struct omap_hdmi * hdmi)581 static int hdmi_probe_of(struct omap_hdmi *hdmi)
582 {
583 struct platform_device *pdev = hdmi->pdev;
584 struct device_node *node = pdev->dev.of_node;
585 struct device_node *ep;
586 int r;
587
588 ep = of_graph_get_endpoint_by_regs(node, 0, 0);
589 if (!ep)
590 return 0;
591
592 r = hdmi_parse_lanes_of(pdev, ep, &hdmi->phy);
593 if (r)
594 goto err;
595
596 of_node_put(ep);
597 return 0;
598
599 err:
600 of_node_put(ep);
601 return r;
602 }
603
604 /* Audio callbacks */
hdmi_audio_startup(struct device * dev,void (* abort_cb)(struct device * dev))605 static int hdmi_audio_startup(struct device *dev,
606 void (*abort_cb)(struct device *dev))
607 {
608 struct omap_hdmi *hd = dev_get_drvdata(dev);
609
610 mutex_lock(&hd->lock);
611
612 WARN_ON(hd->audio_abort_cb != NULL);
613
614 hd->audio_abort_cb = abort_cb;
615
616 mutex_unlock(&hd->lock);
617
618 return 0;
619 }
620
hdmi_audio_shutdown(struct device * dev)621 static int hdmi_audio_shutdown(struct device *dev)
622 {
623 struct omap_hdmi *hd = dev_get_drvdata(dev);
624
625 mutex_lock(&hd->lock);
626 hd->audio_abort_cb = NULL;
627 hd->audio_configured = false;
628 hd->audio_playing = false;
629 mutex_unlock(&hd->lock);
630
631 return 0;
632 }
633
hdmi_audio_start(struct device * dev)634 static int hdmi_audio_start(struct device *dev)
635 {
636 struct omap_hdmi *hd = dev_get_drvdata(dev);
637 unsigned long flags;
638
639 spin_lock_irqsave(&hd->audio_playing_lock, flags);
640
641 if (hd->display_enabled) {
642 if (!hdmi_mode_has_audio(&hd->cfg))
643 DSSERR("%s: Video mode does not support audio\n",
644 __func__);
645 hdmi_start_audio_stream(hd);
646 }
647 hd->audio_playing = true;
648
649 spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
650 return 0;
651 }
652
hdmi_audio_stop(struct device * dev)653 static void hdmi_audio_stop(struct device *dev)
654 {
655 struct omap_hdmi *hd = dev_get_drvdata(dev);
656 unsigned long flags;
657
658 if (!hdmi_mode_has_audio(&hd->cfg))
659 DSSERR("%s: Video mode does not support audio\n", __func__);
660
661 spin_lock_irqsave(&hd->audio_playing_lock, flags);
662
663 if (hd->display_enabled)
664 hdmi_stop_audio_stream(hd);
665 hd->audio_playing = false;
666
667 spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
668 }
669
hdmi_audio_config(struct device * dev,struct omap_dss_audio * dss_audio)670 static int hdmi_audio_config(struct device *dev,
671 struct omap_dss_audio *dss_audio)
672 {
673 struct omap_hdmi *hd = dev_get_drvdata(dev);
674 int ret = 0;
675
676 mutex_lock(&hd->lock);
677
678 if (hd->display_enabled) {
679 ret = hdmi5_audio_config(&hd->core, &hd->wp, dss_audio,
680 hd->cfg.vm.pixelclock);
681 if (ret)
682 goto out;
683 }
684
685 hd->audio_configured = true;
686 hd->audio_config = *dss_audio;
687 out:
688 mutex_unlock(&hd->lock);
689
690 return ret;
691 }
692
693 static const struct omap_hdmi_audio_ops hdmi_audio_ops = {
694 .audio_startup = hdmi_audio_startup,
695 .audio_shutdown = hdmi_audio_shutdown,
696 .audio_start = hdmi_audio_start,
697 .audio_stop = hdmi_audio_stop,
698 .audio_config = hdmi_audio_config,
699 };
700
hdmi_audio_register(struct omap_hdmi * hdmi)701 static int hdmi_audio_register(struct omap_hdmi *hdmi)
702 {
703 struct omap_hdmi_audio_pdata pdata = {
704 .dev = &hdmi->pdev->dev,
705 .version = 5,
706 .audio_dma_addr = hdmi_wp_get_audio_dma_addr(&hdmi->wp),
707 .ops = &hdmi_audio_ops,
708 };
709
710 hdmi->audio_pdev = platform_device_register_data(
711 &hdmi->pdev->dev, "omap-hdmi-audio", PLATFORM_DEVID_AUTO,
712 &pdata, sizeof(pdata));
713
714 if (IS_ERR(hdmi->audio_pdev))
715 return PTR_ERR(hdmi->audio_pdev);
716
717 hdmi_runtime_get(hdmi);
718 hdmi->wp_idlemode =
719 REG_GET(hdmi->wp.base, HDMI_WP_SYSCONFIG, 3, 2);
720 hdmi_runtime_put(hdmi);
721
722 return 0;
723 }
724
725 /* HDMI HW IP initialisation */
hdmi5_bind(struct device * dev,struct device * master,void * data)726 static int hdmi5_bind(struct device *dev, struct device *master, void *data)
727 {
728 struct platform_device *pdev = to_platform_device(dev);
729 struct dss_device *dss = dss_get_device(master);
730 struct omap_hdmi *hdmi;
731 int r;
732 int irq;
733
734 hdmi = kzalloc(sizeof(*hdmi), GFP_KERNEL);
735 if (!hdmi)
736 return -ENOMEM;
737
738 hdmi->pdev = pdev;
739 hdmi->dss = dss;
740 dev_set_drvdata(&pdev->dev, hdmi);
741
742 mutex_init(&hdmi->lock);
743 spin_lock_init(&hdmi->audio_playing_lock);
744
745 r = hdmi_probe_of(hdmi);
746 if (r)
747 goto err_free;
748
749 r = hdmi_wp_init(pdev, &hdmi->wp, 5);
750 if (r)
751 goto err_free;
752
753 r = hdmi_pll_init(dss, pdev, &hdmi->pll, &hdmi->wp);
754 if (r)
755 goto err_free;
756
757 r = hdmi_phy_init(pdev, &hdmi->phy, 5);
758 if (r)
759 goto err_pll;
760
761 r = hdmi5_core_init(pdev, &hdmi->core);
762 if (r)
763 goto err_pll;
764
765 irq = platform_get_irq(pdev, 0);
766 if (irq < 0) {
767 DSSERR("platform_get_irq failed\n");
768 r = -ENODEV;
769 goto err_pll;
770 }
771
772 r = devm_request_threaded_irq(&pdev->dev, irq,
773 NULL, hdmi_irq_handler,
774 IRQF_ONESHOT, "OMAP HDMI", hdmi);
775 if (r) {
776 DSSERR("HDMI IRQ request failed\n");
777 goto err_pll;
778 }
779
780 pm_runtime_enable(&pdev->dev);
781
782 hdmi_init_output(hdmi);
783
784 r = hdmi_audio_register(hdmi);
785 if (r) {
786 DSSERR("Registering HDMI audio failed %d\n", r);
787 hdmi_uninit_output(hdmi);
788 pm_runtime_disable(&pdev->dev);
789 return r;
790 }
791
792 hdmi->debugfs = dss_debugfs_create_file(dss, "hdmi", hdmi_dump_regs,
793 hdmi);
794
795 return 0;
796
797 err_pll:
798 hdmi_pll_uninit(&hdmi->pll);
799 err_free:
800 kfree(hdmi);
801 return r;
802 }
803
hdmi5_unbind(struct device * dev,struct device * master,void * data)804 static void hdmi5_unbind(struct device *dev, struct device *master, void *data)
805 {
806 struct omap_hdmi *hdmi = dev_get_drvdata(dev);
807
808 dss_debugfs_remove_file(hdmi->debugfs);
809
810 if (hdmi->audio_pdev)
811 platform_device_unregister(hdmi->audio_pdev);
812
813 hdmi_uninit_output(hdmi);
814
815 hdmi_pll_uninit(&hdmi->pll);
816
817 pm_runtime_disable(dev);
818
819 kfree(hdmi);
820 }
821
822 static const struct component_ops hdmi5_component_ops = {
823 .bind = hdmi5_bind,
824 .unbind = hdmi5_unbind,
825 };
826
hdmi5_probe(struct platform_device * pdev)827 static int hdmi5_probe(struct platform_device *pdev)
828 {
829 return component_add(&pdev->dev, &hdmi5_component_ops);
830 }
831
hdmi5_remove(struct platform_device * pdev)832 static int hdmi5_remove(struct platform_device *pdev)
833 {
834 component_del(&pdev->dev, &hdmi5_component_ops);
835 return 0;
836 }
837
hdmi_runtime_suspend(struct device * dev)838 static int hdmi_runtime_suspend(struct device *dev)
839 {
840 struct omap_hdmi *hdmi = dev_get_drvdata(dev);
841
842 dispc_runtime_put(hdmi->dss->dispc);
843
844 return 0;
845 }
846
hdmi_runtime_resume(struct device * dev)847 static int hdmi_runtime_resume(struct device *dev)
848 {
849 struct omap_hdmi *hdmi = dev_get_drvdata(dev);
850 int r;
851
852 r = dispc_runtime_get(hdmi->dss->dispc);
853 if (r < 0)
854 return r;
855
856 return 0;
857 }
858
859 static const struct dev_pm_ops hdmi_pm_ops = {
860 .runtime_suspend = hdmi_runtime_suspend,
861 .runtime_resume = hdmi_runtime_resume,
862 };
863
864 static const struct of_device_id hdmi_of_match[] = {
865 { .compatible = "ti,omap5-hdmi", },
866 { .compatible = "ti,dra7-hdmi", },
867 {},
868 };
869
870 struct platform_driver omapdss_hdmi5hw_driver = {
871 .probe = hdmi5_probe,
872 .remove = hdmi5_remove,
873 .driver = {
874 .name = "omapdss_hdmi5",
875 .pm = &hdmi_pm_ops,
876 .of_match_table = hdmi_of_match,
877 .suppress_bind_attrs = true,
878 },
879 };
880
