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
hdmi_runtime_get(struct omap_hdmi * hdmi)40 static 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
hdmi_runtime_put(struct omap_hdmi * hdmi)54 static 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
hdmi_irq_handler(int irq,void * data)64 static 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
hdmi_power_on_core(struct omap_hdmi * hdmi)103 static 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
127 err_runtime_get:
128 regulator_disable(hdmi->vdda_reg);
129 err_reg_enable:
130 hdmi->core.core_pwr_cnt--;
131
132 return r;
133 }
134
hdmi_power_off_core(struct omap_hdmi * hdmi)135 static 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
hdmi_power_on_full(struct omap_hdmi * hdmi)146 static 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
215 err_vid_enable:
216 dss_mgr_disable(&hdmi->output);
217 err_mgr_enable:
218 hdmi_wp_set_phy_pwr(&hdmi->wp, HDMI_PHYPWRCMD_OFF);
219 err_phy_pwr:
220 err_phy_cfg:
221 err_pll_cfg:
222 dss_pll_disable(&hdmi->pll.pll);
223 err_pll_enable:
224 hdmi_power_off_core(hdmi);
225 return -EIO;
226 }
227
hdmi_power_off_full(struct omap_hdmi * hdmi)228 static 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
hdmi_dump_regs(struct seq_file * s,void * p)243 static 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
hdmi_start_audio_stream(struct omap_hdmi * hd)264 static 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
hdmi_stop_audio_stream(struct omap_hdmi * hd)270 static 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
hdmi4_core_enable(struct hdmi_core_data * core)276 int 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
294 err0:
295 mutex_unlock(&hdmi->lock);
296 return r;
297 }
298
hdmi4_core_disable(struct hdmi_core_data * core)299 void 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
hdmi4_bridge_attach(struct drm_bridge * bridge,enum drm_bridge_attach_flags flags)316 static 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
hdmi4_bridge_mode_set(struct drm_bridge * bridge,const struct drm_display_mode * mode,const struct drm_display_mode * adjusted_mode)328 static 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
hdmi4_bridge_enable(struct drm_bridge * bridge,struct drm_bridge_state * bridge_state)343 static 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
408 done:
409 mutex_unlock(&hdmi->lock);
410 }
411
hdmi4_bridge_disable(struct drm_bridge * bridge,struct drm_bridge_state * bridge_state)412 static 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
hdmi4_bridge_hpd_notify(struct drm_bridge * bridge,enum drm_connector_status status)430 static 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
hdmi4_bridge_edid_read(struct drm_bridge * bridge,struct drm_connector * connector)439 static const struct drm_edid *hdmi4_bridge_edid_read(struct drm_bridge *bridge,
440 struct drm_connector *connector)
441 {
442 struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge);
443 const struct drm_edid *drm_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 drm_edid = drm_edid_read_custom(connector, hdmi4_core_ddc_read, &hdmi->core);
465
466 done:
467 hdmi_runtime_put(hdmi);
468 mutex_unlock(&hdmi->lock);
469
470 if (drm_edid) {
471 /*
472 * FIXME: The CEC physical address should be set using
473 * hdmi4_cec_set_phys_addr(&hdmi->core,
474 * connector->display_info.source_physical_address) from a path
475 * that has read the EDID and called
476 * drm_edid_connector_update().
477 */
478 const struct edid *edid = drm_edid_raw(drm_edid);
479 unsigned int len = (edid->extensions + 1) * EDID_LENGTH;
480
481 cec_addr = cec_get_edid_phys_addr((u8 *)edid, len, NULL);
482 } else {
483 cec_addr = CEC_PHYS_ADDR_INVALID;
484 }
485
486 hdmi4_cec_set_phys_addr(&hdmi->core, cec_addr);
487
488 if (need_enable)
489 hdmi4_core_disable(&hdmi->core);
490
491 return drm_edid;
492 }
493
494 static const struct drm_bridge_funcs hdmi4_bridge_funcs = {
495 .attach = hdmi4_bridge_attach,
496 .mode_set = hdmi4_bridge_mode_set,
497 .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
498 .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
499 .atomic_reset = drm_atomic_helper_bridge_reset,
500 .atomic_enable = hdmi4_bridge_enable,
501 .atomic_disable = hdmi4_bridge_disable,
502 .hpd_notify = hdmi4_bridge_hpd_notify,
503 .edid_read = hdmi4_bridge_edid_read,
504 };
505
hdmi4_bridge_init(struct omap_hdmi * hdmi)506 static void hdmi4_bridge_init(struct omap_hdmi *hdmi)
507 {
508 hdmi->bridge.funcs = &hdmi4_bridge_funcs;
509 hdmi->bridge.of_node = hdmi->pdev->dev.of_node;
510 hdmi->bridge.ops = DRM_BRIDGE_OP_EDID;
511 hdmi->bridge.type = DRM_MODE_CONNECTOR_HDMIA;
512
513 drm_bridge_add(&hdmi->bridge);
514 }
515
hdmi4_bridge_cleanup(struct omap_hdmi * hdmi)516 static void hdmi4_bridge_cleanup(struct omap_hdmi *hdmi)
517 {
518 drm_bridge_remove(&hdmi->bridge);
519 }
520
521 /* -----------------------------------------------------------------------------
522 * Audio Callbacks
523 */
524
hdmi_audio_startup(struct device * dev,void (* abort_cb)(struct device * dev))525 static int hdmi_audio_startup(struct device *dev,
526 void (*abort_cb)(struct device *dev))
527 {
528 struct omap_hdmi *hd = dev_get_drvdata(dev);
529
530 mutex_lock(&hd->lock);
531
532 WARN_ON(hd->audio_abort_cb != NULL);
533
534 hd->audio_abort_cb = abort_cb;
535
536 mutex_unlock(&hd->lock);
537
538 return 0;
539 }
540
hdmi_audio_shutdown(struct device * dev)541 static int hdmi_audio_shutdown(struct device *dev)
542 {
543 struct omap_hdmi *hd = dev_get_drvdata(dev);
544
545 mutex_lock(&hd->lock);
546 hd->audio_abort_cb = NULL;
547 hd->audio_configured = false;
548 hd->audio_playing = false;
549 mutex_unlock(&hd->lock);
550
551 return 0;
552 }
553
hdmi_audio_start(struct device * dev)554 static int hdmi_audio_start(struct device *dev)
555 {
556 struct omap_hdmi *hd = dev_get_drvdata(dev);
557 unsigned long flags;
558
559 spin_lock_irqsave(&hd->audio_playing_lock, flags);
560
561 if (hd->display_enabled) {
562 if (!hdmi_mode_has_audio(&hd->cfg))
563 DSSERR("%s: Video mode does not support audio\n",
564 __func__);
565 hdmi_start_audio_stream(hd);
566 }
567 hd->audio_playing = true;
568
569 spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
570 return 0;
571 }
572
hdmi_audio_stop(struct device * dev)573 static void hdmi_audio_stop(struct device *dev)
574 {
575 struct omap_hdmi *hd = dev_get_drvdata(dev);
576 unsigned long flags;
577
578 WARN_ON(!hdmi_mode_has_audio(&hd->cfg));
579
580 spin_lock_irqsave(&hd->audio_playing_lock, flags);
581
582 if (hd->display_enabled)
583 hdmi_stop_audio_stream(hd);
584 hd->audio_playing = false;
585
586 spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
587 }
588
hdmi_audio_config(struct device * dev,struct omap_dss_audio * dss_audio)589 static int hdmi_audio_config(struct device *dev,
590 struct omap_dss_audio *dss_audio)
591 {
592 struct omap_hdmi *hd = dev_get_drvdata(dev);
593 int ret = 0;
594
595 mutex_lock(&hd->lock);
596
597 if (hd->display_enabled) {
598 ret = hdmi4_audio_config(&hd->core, &hd->wp, dss_audio,
599 hd->cfg.vm.pixelclock);
600 if (ret)
601 goto out;
602 }
603
604 hd->audio_configured = true;
605 hd->audio_config = *dss_audio;
606 out:
607 mutex_unlock(&hd->lock);
608
609 return ret;
610 }
611
612 static const struct omap_hdmi_audio_ops hdmi_audio_ops = {
613 .audio_startup = hdmi_audio_startup,
614 .audio_shutdown = hdmi_audio_shutdown,
615 .audio_start = hdmi_audio_start,
616 .audio_stop = hdmi_audio_stop,
617 .audio_config = hdmi_audio_config,
618 };
619
hdmi_audio_register(struct omap_hdmi * hdmi)620 static int hdmi_audio_register(struct omap_hdmi *hdmi)
621 {
622 struct omap_hdmi_audio_pdata pdata = {
623 .dev = &hdmi->pdev->dev,
624 .version = 4,
625 .audio_dma_addr = hdmi_wp_get_audio_dma_addr(&hdmi->wp),
626 .ops = &hdmi_audio_ops,
627 };
628
629 hdmi->audio_pdev = platform_device_register_data(
630 &hdmi->pdev->dev, "omap-hdmi-audio", PLATFORM_DEVID_AUTO,
631 &pdata, sizeof(pdata));
632
633 if (IS_ERR(hdmi->audio_pdev))
634 return PTR_ERR(hdmi->audio_pdev);
635
636 return 0;
637 }
638
639 /* -----------------------------------------------------------------------------
640 * Component Bind & Unbind
641 */
642
hdmi4_bind(struct device * dev,struct device * master,void * data)643 static int hdmi4_bind(struct device *dev, struct device *master, void *data)
644 {
645 struct dss_device *dss = dss_get_device(master);
646 struct omap_hdmi *hdmi = dev_get_drvdata(dev);
647 int r;
648
649 hdmi->dss = dss;
650
651 r = hdmi_runtime_get(hdmi);
652 if (r)
653 return r;
654
655 r = hdmi_pll_init(dss, hdmi->pdev, &hdmi->pll, &hdmi->wp);
656 if (r)
657 goto err_runtime_put;
658
659 r = hdmi4_cec_init(hdmi->pdev, &hdmi->core, &hdmi->wp);
660 if (r)
661 goto err_pll_uninit;
662
663 r = hdmi_audio_register(hdmi);
664 if (r) {
665 DSSERR("Registering HDMI audio failed\n");
666 goto err_cec_uninit;
667 }
668
669 hdmi->debugfs = dss_debugfs_create_file(dss, "hdmi", hdmi_dump_regs,
670 hdmi);
671
672 hdmi_runtime_put(hdmi);
673
674 return 0;
675
676 err_cec_uninit:
677 hdmi4_cec_uninit(&hdmi->core);
678 err_pll_uninit:
679 hdmi_pll_uninit(&hdmi->pll);
680 err_runtime_put:
681 hdmi_runtime_put(hdmi);
682 return r;
683 }
684
hdmi4_unbind(struct device * dev,struct device * master,void * data)685 static void hdmi4_unbind(struct device *dev, struct device *master, void *data)
686 {
687 struct omap_hdmi *hdmi = dev_get_drvdata(dev);
688
689 dss_debugfs_remove_file(hdmi->debugfs);
690
691 if (hdmi->audio_pdev)
692 platform_device_unregister(hdmi->audio_pdev);
693
694 hdmi4_cec_uninit(&hdmi->core);
695 hdmi_pll_uninit(&hdmi->pll);
696 }
697
698 static const struct component_ops hdmi4_component_ops = {
699 .bind = hdmi4_bind,
700 .unbind = hdmi4_unbind,
701 };
702
703 /* -----------------------------------------------------------------------------
704 * Probe & Remove, Suspend & Resume
705 */
706
hdmi4_init_output(struct omap_hdmi * hdmi)707 static int hdmi4_init_output(struct omap_hdmi *hdmi)
708 {
709 struct omap_dss_device *out = &hdmi->output;
710 int r;
711
712 hdmi4_bridge_init(hdmi);
713
714 out->dev = &hdmi->pdev->dev;
715 out->id = OMAP_DSS_OUTPUT_HDMI;
716 out->type = OMAP_DISPLAY_TYPE_HDMI;
717 out->name = "hdmi.0";
718 out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT;
719 out->of_port = 0;
720
721 r = omapdss_device_init_output(out, &hdmi->bridge);
722 if (r < 0) {
723 hdmi4_bridge_cleanup(hdmi);
724 return r;
725 }
726
727 omapdss_device_register(out);
728
729 return 0;
730 }
731
hdmi4_uninit_output(struct omap_hdmi * hdmi)732 static void hdmi4_uninit_output(struct omap_hdmi *hdmi)
733 {
734 struct omap_dss_device *out = &hdmi->output;
735
736 omapdss_device_unregister(out);
737 omapdss_device_cleanup_output(out);
738
739 hdmi4_bridge_cleanup(hdmi);
740 }
741
hdmi4_probe_of(struct omap_hdmi * hdmi)742 static int hdmi4_probe_of(struct omap_hdmi *hdmi)
743 {
744 struct platform_device *pdev = hdmi->pdev;
745 struct device_node *node = pdev->dev.of_node;
746 struct device_node *ep;
747 int r;
748
749 ep = of_graph_get_endpoint_by_regs(node, 0, 0);
750 if (!ep)
751 return 0;
752
753 r = hdmi_parse_lanes_of(pdev, ep, &hdmi->phy);
754 of_node_put(ep);
755 return r;
756 }
757
hdmi4_probe(struct platform_device * pdev)758 static int hdmi4_probe(struct platform_device *pdev)
759 {
760 struct omap_hdmi *hdmi;
761 int irq;
762 int r;
763
764 hdmi = kzalloc(sizeof(*hdmi), GFP_KERNEL);
765 if (!hdmi)
766 return -ENOMEM;
767
768 hdmi->pdev = pdev;
769
770 dev_set_drvdata(&pdev->dev, hdmi);
771
772 mutex_init(&hdmi->lock);
773 spin_lock_init(&hdmi->audio_playing_lock);
774
775 r = hdmi4_probe_of(hdmi);
776 if (r)
777 goto err_free;
778
779 r = hdmi_wp_init(pdev, &hdmi->wp, 4);
780 if (r)
781 goto err_free;
782
783 r = hdmi_phy_init(pdev, &hdmi->phy, 4);
784 if (r)
785 goto err_free;
786
787 r = hdmi4_core_init(pdev, &hdmi->core);
788 if (r)
789 goto err_free;
790
791 irq = platform_get_irq(pdev, 0);
792 if (irq < 0) {
793 DSSERR("platform_get_irq failed\n");
794 r = -ENODEV;
795 goto err_free;
796 }
797
798 r = devm_request_threaded_irq(&pdev->dev, irq,
799 NULL, hdmi_irq_handler,
800 IRQF_ONESHOT, "OMAP HDMI", hdmi);
801 if (r) {
802 DSSERR("HDMI IRQ request failed\n");
803 goto err_free;
804 }
805
806 hdmi->vdda_reg = devm_regulator_get(&pdev->dev, "vdda");
807 if (IS_ERR(hdmi->vdda_reg)) {
808 r = PTR_ERR(hdmi->vdda_reg);
809 if (r != -EPROBE_DEFER)
810 DSSERR("can't get VDDA regulator\n");
811 goto err_free;
812 }
813
814 pm_runtime_enable(&pdev->dev);
815
816 r = hdmi4_init_output(hdmi);
817 if (r)
818 goto err_pm_disable;
819
820 r = component_add(&pdev->dev, &hdmi4_component_ops);
821 if (r)
822 goto err_uninit_output;
823
824 return 0;
825
826 err_uninit_output:
827 hdmi4_uninit_output(hdmi);
828 err_pm_disable:
829 pm_runtime_disable(&pdev->dev);
830 err_free:
831 kfree(hdmi);
832 return r;
833 }
834
hdmi4_remove(struct platform_device * pdev)835 static void hdmi4_remove(struct platform_device *pdev)
836 {
837 struct omap_hdmi *hdmi = platform_get_drvdata(pdev);
838
839 component_del(&pdev->dev, &hdmi4_component_ops);
840
841 hdmi4_uninit_output(hdmi);
842
843 pm_runtime_disable(&pdev->dev);
844
845 kfree(hdmi);
846 }
847
848 static const struct of_device_id hdmi_of_match[] = {
849 { .compatible = "ti,omap4-hdmi", },
850 {},
851 };
852
853 struct platform_driver omapdss_hdmi4hw_driver = {
854 .probe = hdmi4_probe,
855 .remove = hdmi4_remove,
856 .driver = {
857 .name = "omapdss_hdmi",
858 .of_match_table = hdmi_of_match,
859 .suppress_bind_attrs = true,
860 },
861 };
862