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Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux...
[linux/fpc-iii.git] / sound / soc / codecs / hdac_hdmi.c
blob26f9459cb3bc8e6bb60aa2b71ddeaf427cb869ab
1 /*
2 * hdac_hdmi.c - ASoc HDA-HDMI codec driver for Intel platforms
3 *
4 * Copyright (C) 2014-2015 Intel Corp
5 * Author: Samreen Nilofer <samreen.nilofer@intel.com>
6 * Subhransu S. Prusty <subhransu.s.prusty@intel.com>
7 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; version 2 of the License.
12 *
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17 *
18 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
19 */
20 #include <linux/init.h>
21 #include <linux/delay.h>
22 #include <linux/module.h>
23 #include <linux/pm_runtime.h>
24 #include <linux/hdmi.h>
25 #include <drm/drm_edid.h>
26 #include <sound/pcm_params.h>
27 #include <sound/jack.h>
28 #include <sound/soc.h>
29 #include <sound/hdaudio_ext.h>
30 #include <sound/hda_i915.h>
31 #include <sound/pcm_drm_eld.h>
32 #include "../../hda/local.h"
33 #include "hdac_hdmi.h"
34
35 #define NAME_SIZE 32
36
37 #define AMP_OUT_MUTE 0xb080
38 #define AMP_OUT_UNMUTE 0xb000
39 #define PIN_OUT (AC_PINCTL_OUT_EN)
40
41 #define HDA_MAX_CONNECTIONS 32
42
43 #define HDA_MAX_CVTS 3
44
45 #define ELD_MAX_SIZE 256
46 #define ELD_FIXED_BYTES 20
47
48 struct hdac_hdmi_cvt_params {
49 unsigned int channels_min;
50 unsigned int channels_max;
51 u32 rates;
52 u64 formats;
53 unsigned int maxbps;
54 };
55
56 struct hdac_hdmi_cvt {
57 struct list_head head;
58 hda_nid_t nid;
59 const char *name;
60 struct hdac_hdmi_cvt_params params;
61 };
62
63 struct hdac_hdmi_eld {
64 bool monitor_present;
65 bool eld_valid;
66 int eld_size;
67 char eld_buffer[ELD_MAX_SIZE];
68 };
69
70 struct hdac_hdmi_pin {
71 struct list_head head;
72 hda_nid_t nid;
73 int num_mux_nids;
74 hda_nid_t mux_nids[HDA_MAX_CONNECTIONS];
75 struct hdac_hdmi_eld eld;
76 struct hdac_ext_device *edev;
77 int repoll_count;
78 struct delayed_work work;
79 };
80
81 struct hdac_hdmi_pcm {
82 struct list_head head;
83 int pcm_id;
84 struct hdac_hdmi_pin *pin;
85 struct hdac_hdmi_cvt *cvt;
86 struct snd_jack *jack;
87 };
88
89 struct hdac_hdmi_dai_pin_map {
90 int dai_id;
91 struct hdac_hdmi_pin *pin;
92 struct hdac_hdmi_cvt *cvt;
93 };
94
95 struct hdac_hdmi_priv {
96 struct hdac_hdmi_dai_pin_map dai_map[HDA_MAX_CVTS];
97 struct list_head pin_list;
98 struct list_head cvt_list;
99 struct list_head pcm_list;
100 int num_pin;
101 int num_cvt;
102 struct mutex pin_mutex;
103 };
104
105 static inline struct hdac_ext_device *to_hda_ext_device(struct device *dev)
106 {
107 struct hdac_device *hdac = dev_to_hdac_dev(dev);
108
109 return to_ehdac_device(hdac);
110 }
111
112 static unsigned int sad_format(const u8 *sad)
113 {
114 return ((sad[0] >> 0x3) & 0x1f);
115 }
116
117 static unsigned int sad_sample_bits_lpcm(const u8 *sad)
118 {
119 return (sad[2] & 7);
120 }
121
122 static int hdac_hdmi_eld_limit_formats(struct snd_pcm_runtime *runtime,
123 void *eld)
124 {
125 u64 formats = SNDRV_PCM_FMTBIT_S16;
126 int i;
127 const u8 *sad, *eld_buf = eld;
128
129 sad = drm_eld_sad(eld_buf);
130 if (!sad)
131 goto format_constraint;
132
133 for (i = drm_eld_sad_count(eld_buf); i > 0; i--, sad += 3) {
134 if (sad_format(sad) == 1) { /* AUDIO_CODING_TYPE_LPCM */
135
136 /*
137 * the controller support 20 and 24 bits in 32 bit
138 * container so we set S32
139 */
140 if (sad_sample_bits_lpcm(sad) & 0x6)
141 formats |= SNDRV_PCM_FMTBIT_S32;
142 }
143 }
144
145 format_constraint:
146 return snd_pcm_hw_constraint_mask64(runtime, SNDRV_PCM_HW_PARAM_FORMAT,
147 formats);
148
149 }
150
151 /* HDMI ELD routines */
152 static unsigned int hdac_hdmi_get_eld_data(struct hdac_device *codec,
153 hda_nid_t nid, int byte_index)
154 {
155 unsigned int val;
156
157 val = snd_hdac_codec_read(codec, nid, 0, AC_VERB_GET_HDMI_ELDD,
158 byte_index);
159
160 dev_dbg(&codec->dev, "HDMI: ELD data byte %d: 0x%x\n",
161 byte_index, val);
162
163 return val;
164 }
165
166 static int hdac_hdmi_get_eld_size(struct hdac_device *codec, hda_nid_t nid)
167 {
168 return snd_hdac_codec_read(codec, nid, 0, AC_VERB_GET_HDMI_DIP_SIZE,
169 AC_DIPSIZE_ELD_BUF);
170 }
171
172 /*
173 * This function queries the ELD size and ELD data and fills in the buffer
174 * passed by user
175 */
176 static int hdac_hdmi_get_eld(struct hdac_device *codec, hda_nid_t nid,
177 unsigned char *buf, int *eld_size)
178 {
179 int i, size, ret = 0;
180
181 /*
182 * ELD size is initialized to zero in caller function. If no errors and
183 * ELD is valid, actual eld_size is assigned.
184 */
185
186 size = hdac_hdmi_get_eld_size(codec, nid);
187 if (size < ELD_FIXED_BYTES || size > ELD_MAX_SIZE) {
188 dev_err(&codec->dev, "HDMI: invalid ELD buf size %d\n", size);
189 return -ERANGE;
190 }
191
192 /* set ELD buffer */
193 for (i = 0; i < size; i++) {
194 unsigned int val = hdac_hdmi_get_eld_data(codec, nid, i);
195 /*
196 * Graphics driver might be writing to ELD buffer right now.
197 * Just abort. The caller will repoll after a while.
198 */
199 if (!(val & AC_ELDD_ELD_VALID)) {
200 dev_err(&codec->dev,
201 "HDMI: invalid ELD data byte %d\n", i);
202 ret = -EINVAL;
203 goto error;
204 }
205 val &= AC_ELDD_ELD_DATA;
206 /*
207 * The first byte cannot be zero. This can happen on some DVI
208 * connections. Some Intel chips may also need some 250ms delay
209 * to return non-zero ELD data, even when the graphics driver
210 * correctly writes ELD content before setting ELD_valid bit.
211 */
212 if (!val && !i) {
213 dev_err(&codec->dev, "HDMI: 0 ELD data\n");
214 ret = -EINVAL;
215 goto error;
216 }
217 buf[i] = val;
218 }
219
220 *eld_size = size;
221 error:
222 return ret;
223 }
224
225 static int hdac_hdmi_setup_stream(struct hdac_ext_device *hdac,
226 hda_nid_t cvt_nid, hda_nid_t pin_nid,
227 u32 stream_tag, int format)
228 {
229 unsigned int val;
230
231 dev_dbg(&hdac->hdac.dev, "cvt nid %d pnid %d stream %d format 0x%x\n",
232 cvt_nid, pin_nid, stream_tag, format);
233
234 val = (stream_tag << 4);
235
236 snd_hdac_codec_write(&hdac->hdac, cvt_nid, 0,
237 AC_VERB_SET_CHANNEL_STREAMID, val);
238 snd_hdac_codec_write(&hdac->hdac, cvt_nid, 0,
239 AC_VERB_SET_STREAM_FORMAT, format);
240
241 return 0;
242 }
243
244 static void
245 hdac_hdmi_set_dip_index(struct hdac_ext_device *hdac, hda_nid_t pin_nid,
246 int packet_index, int byte_index)
247 {
248 int val;
249
250 val = (packet_index << 5) | (byte_index & 0x1f);
251
252 snd_hdac_codec_write(&hdac->hdac, pin_nid, 0,
253 AC_VERB_SET_HDMI_DIP_INDEX, val);
254 }
255
256 struct dp_audio_infoframe {
257 u8 type; /* 0x84 */
258 u8 len; /* 0x1b */
259 u8 ver; /* 0x11 << 2 */
260
261 u8 CC02_CT47; /* match with HDMI infoframe from this on */
262 u8 SS01_SF24;
263 u8 CXT04;
264 u8 CA;
265 u8 LFEPBL01_LSV36_DM_INH7;
266 };
267
268 static int hdac_hdmi_setup_audio_infoframe(struct hdac_ext_device *hdac,
269 hda_nid_t cvt_nid, hda_nid_t pin_nid)
270 {
271 uint8_t buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AUDIO_INFOFRAME_SIZE];
272 struct hdmi_audio_infoframe frame;
273 struct dp_audio_infoframe dp_ai;
274 struct hdac_hdmi_priv *hdmi = hdac->private_data;
275 struct hdac_hdmi_pin *pin;
276 u8 *dip;
277 int ret;
278 int i;
279 const u8 *eld_buf;
280 u8 conn_type;
281 int channels = 2;
282
283 list_for_each_entry(pin, &hdmi->pin_list, head) {
284 if (pin->nid == pin_nid)
285 break;
286 }
287
288 eld_buf = pin->eld.eld_buffer;
289 conn_type = drm_eld_get_conn_type(eld_buf);
290
291 /* setup channel count */
292 snd_hdac_codec_write(&hdac->hdac, cvt_nid, 0,
293 AC_VERB_SET_CVT_CHAN_COUNT, channels - 1);
294
295 switch (conn_type) {
296 case DRM_ELD_CONN_TYPE_HDMI:
297 hdmi_audio_infoframe_init(&frame);
298
299 /* Default stereo for now */
300 frame.channels = channels;
301
302 ret = hdmi_audio_infoframe_pack(&frame, buffer, sizeof(buffer));
303 if (ret < 0)
304 return ret;
305
306 break;
307
308 case DRM_ELD_CONN_TYPE_DP:
309 memset(&dp_ai, 0, sizeof(dp_ai));
310 dp_ai.type = 0x84;
311 dp_ai.len = 0x1b;
312 dp_ai.ver = 0x11 << 2;
313 dp_ai.CC02_CT47 = channels - 1;
314 dp_ai.CA = 0;
315
316 dip = (u8 *)&dp_ai;
317 break;
318
319 default:
320 dev_err(&hdac->hdac.dev, "Invalid connection type: %d\n",
321 conn_type);
322 return -EIO;
323 }
324
325 /* stop infoframe transmission */
326 hdac_hdmi_set_dip_index(hdac, pin_nid, 0x0, 0x0);
327 snd_hdac_codec_write(&hdac->hdac, pin_nid, 0,
328 AC_VERB_SET_HDMI_DIP_XMIT, AC_DIPXMIT_DISABLE);
329
330
331 /* Fill infoframe. Index auto-incremented */
332 hdac_hdmi_set_dip_index(hdac, pin_nid, 0x0, 0x0);
333 if (conn_type == DRM_ELD_CONN_TYPE_HDMI) {
334 for (i = 0; i < sizeof(buffer); i++)
335 snd_hdac_codec_write(&hdac->hdac, pin_nid, 0,
336 AC_VERB_SET_HDMI_DIP_DATA, buffer[i]);
337 } else {
338 for (i = 0; i < sizeof(dp_ai); i++)
339 snd_hdac_codec_write(&hdac->hdac, pin_nid, 0,
340 AC_VERB_SET_HDMI_DIP_DATA, dip[i]);
341 }
342
343 /* Start infoframe */
344 hdac_hdmi_set_dip_index(hdac, pin_nid, 0x0, 0x0);
345 snd_hdac_codec_write(&hdac->hdac, pin_nid, 0,
346 AC_VERB_SET_HDMI_DIP_XMIT, AC_DIPXMIT_BEST);
347
348 return 0;
349 }
350
351 static void hdac_hdmi_set_power_state(struct hdac_ext_device *edev,
352 struct hdac_hdmi_dai_pin_map *dai_map, unsigned int pwr_state)
353 {
354 /* Power up pin widget */
355 if (!snd_hdac_check_power_state(&edev->hdac, dai_map->pin->nid,
356 pwr_state))
357 snd_hdac_codec_write(&edev->hdac, dai_map->pin->nid, 0,
358 AC_VERB_SET_POWER_STATE, pwr_state);
359
360 /* Power up converter */
361 if (!snd_hdac_check_power_state(&edev->hdac, dai_map->cvt->nid,
362 pwr_state))
363 snd_hdac_codec_write(&edev->hdac, dai_map->cvt->nid, 0,
364 AC_VERB_SET_POWER_STATE, pwr_state);
365 }
366
367 static int hdac_hdmi_playback_prepare(struct snd_pcm_substream *substream,
368 struct snd_soc_dai *dai)
369 {
370 struct hdac_ext_device *hdac = snd_soc_dai_get_drvdata(dai);
371 struct hdac_hdmi_priv *hdmi = hdac->private_data;
372 struct hdac_hdmi_dai_pin_map *dai_map;
373 struct hdac_ext_dma_params *dd;
374 int ret;
375
376 dai_map = &hdmi->dai_map[dai->id];
377
378 dd = (struct hdac_ext_dma_params *)snd_soc_dai_get_dma_data(dai, substream);
379 dev_dbg(&hdac->hdac.dev, "stream tag from cpu dai %d format in cvt 0x%x\n",
380 dd->stream_tag, dd->format);
381
382 ret = hdac_hdmi_setup_audio_infoframe(hdac, dai_map->cvt->nid,
383 dai_map->pin->nid);
384 if (ret < 0)
385 return ret;
386
387 return hdac_hdmi_setup_stream(hdac, dai_map->cvt->nid,
388 dai_map->pin->nid, dd->stream_tag, dd->format);
389 }
390
391 static int hdac_hdmi_set_hw_params(struct snd_pcm_substream *substream,
392 struct snd_pcm_hw_params *hparams, struct snd_soc_dai *dai)
393 {
394 struct hdac_ext_device *hdac = snd_soc_dai_get_drvdata(dai);
395 struct hdac_hdmi_priv *hdmi = hdac->private_data;
396 struct hdac_hdmi_dai_pin_map *dai_map;
397 struct hdac_hdmi_pin *pin;
398 struct hdac_ext_dma_params *dd;
399
400 dai_map = &hdmi->dai_map[dai->id];
401 pin = dai_map->pin;
402
403 if (!pin)
404 return -ENODEV;
405
406 if ((!pin->eld.monitor_present) || (!pin->eld.eld_valid)) {
407 dev_err(&hdac->hdac.dev, "device is not configured for this pin: %d\n",
408 pin->nid);
409 return -ENODEV;
410 }
411
412 dd = snd_soc_dai_get_dma_data(dai, substream);
413 if (!dd) {
414 dd = kzalloc(sizeof(*dd), GFP_KERNEL);
415 if (!dd)
416 return -ENOMEM;
417 }
418
419 dd->format = snd_hdac_calc_stream_format(params_rate(hparams),
420 params_channels(hparams), params_format(hparams),
421 24, 0);
422
423 snd_soc_dai_set_dma_data(dai, substream, (void *)dd);
424
425 return 0;
426 }
427
428 static int hdac_hdmi_playback_cleanup(struct snd_pcm_substream *substream,
429 struct snd_soc_dai *dai)
430 {
431 struct hdac_ext_device *edev = snd_soc_dai_get_drvdata(dai);
432 struct hdac_ext_dma_params *dd;
433 struct hdac_hdmi_priv *hdmi = edev->private_data;
434 struct hdac_hdmi_dai_pin_map *dai_map;
435
436 dai_map = &hdmi->dai_map[dai->id];
437
438 dd = (struct hdac_ext_dma_params *)snd_soc_dai_get_dma_data(dai, substream);
439
440 if (dd) {
441 snd_soc_dai_set_dma_data(dai, substream, NULL);
442 kfree(dd);
443 }
444
445 return 0;
446 }
447
448 static void hdac_hdmi_enable_cvt(struct hdac_ext_device *edev,
449 struct hdac_hdmi_dai_pin_map *dai_map)
450 {
451 /* Enable transmission */
452 snd_hdac_codec_write(&edev->hdac, dai_map->cvt->nid, 0,
453 AC_VERB_SET_DIGI_CONVERT_1, 1);
454
455 /* Category Code (CC) to zero */
456 snd_hdac_codec_write(&edev->hdac, dai_map->cvt->nid, 0,
457 AC_VERB_SET_DIGI_CONVERT_2, 0);
458 }
459
460 static int hdac_hdmi_enable_pin(struct hdac_ext_device *hdac,
461 struct hdac_hdmi_dai_pin_map *dai_map)
462 {
463 int mux_idx;
464 struct hdac_hdmi_pin *pin = dai_map->pin;
465
466 for (mux_idx = 0; mux_idx < pin->num_mux_nids; mux_idx++) {
467 if (pin->mux_nids[mux_idx] == dai_map->cvt->nid) {
468 snd_hdac_codec_write(&hdac->hdac, pin->nid, 0,
469 AC_VERB_SET_CONNECT_SEL, mux_idx);
470 break;
471 }
472 }
473
474 if (mux_idx == pin->num_mux_nids)
475 return -EIO;
476
477 /* Enable out path for this pin widget */
478 snd_hdac_codec_write(&hdac->hdac, pin->nid, 0,
479 AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT);
480
481 hdac_hdmi_set_power_state(hdac, dai_map, AC_PWRST_D0);
482
483 snd_hdac_codec_write(&hdac->hdac, pin->nid, 0,
484 AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_UNMUTE);
485
486 return 0;
487 }
488
489 static int hdac_hdmi_query_pin_connlist(struct hdac_ext_device *hdac,
490 struct hdac_hdmi_pin *pin)
491 {
492 if (!(get_wcaps(&hdac->hdac, pin->nid) & AC_WCAP_CONN_LIST)) {
493 dev_warn(&hdac->hdac.dev,
494 "HDMI: pin %d wcaps %#x does not support connection list\n",
495 pin->nid, get_wcaps(&hdac->hdac, pin->nid));
496 return -EINVAL;
497 }
498
499 pin->num_mux_nids = snd_hdac_get_connections(&hdac->hdac, pin->nid,
500 pin->mux_nids, HDA_MAX_CONNECTIONS);
501 if (pin->num_mux_nids == 0)
502 dev_warn(&hdac->hdac.dev, "No connections found for pin: %d\n",
503 pin->nid);
504
505 dev_dbg(&hdac->hdac.dev, "num_mux_nids %d for pin: %d\n",
506 pin->num_mux_nids, pin->nid);
507
508 return pin->num_mux_nids;
509 }
510
511 /*
512 * Query pcm list and return pin widget to which stream is routed.
513 *
514 * Also query connection list of the pin, to validate the cvt to pin map.
515 *
516 * Same stream rendering to multiple pins simultaneously can be done
517 * possibly, but not supported for now in driver. So return the first pin
518 * connected.
519 */
520 static struct hdac_hdmi_pin *hdac_hdmi_get_pin_from_cvt(
521 struct hdac_ext_device *edev,
522 struct hdac_hdmi_priv *hdmi,
523 struct hdac_hdmi_cvt *cvt)
524 {
525 struct hdac_hdmi_pcm *pcm;
526 struct hdac_hdmi_pin *pin = NULL;
527 int ret, i;
528
529 list_for_each_entry(pcm, &hdmi->pcm_list, head) {
530 if (pcm->cvt == cvt) {
531 pin = pcm->pin;
532 break;
533 }
534 }
535
536 if (pin) {
537 ret = hdac_hdmi_query_pin_connlist(edev, pin);
538 if (ret < 0)
539 return NULL;
540
541 for (i = 0; i < pin->num_mux_nids; i++) {
542 if (pin->mux_nids[i] == cvt->nid)
543 return pin;
544 }
545 }
546
547 return NULL;
548 }
549
550 /*
551 * This tries to get a valid pin and set the HW constraints based on the
552 * ELD. Even if a valid pin is not found return success so that device open
553 * doesn't fail.
554 */
555 static int hdac_hdmi_pcm_open(struct snd_pcm_substream *substream,
556 struct snd_soc_dai *dai)
557 {
558 struct hdac_ext_device *hdac = snd_soc_dai_get_drvdata(dai);
559 struct hdac_hdmi_priv *hdmi = hdac->private_data;
560 struct hdac_hdmi_dai_pin_map *dai_map;
561 struct hdac_hdmi_cvt *cvt;
562 struct hdac_hdmi_pin *pin;
563 int ret;
564
565 dai_map = &hdmi->dai_map[dai->id];
566
567 cvt = dai_map->cvt;
568 pin = hdac_hdmi_get_pin_from_cvt(hdac, hdmi, cvt);
569
570 /*
571 * To make PA and other userland happy.
572 * userland scans devices so returning error does not help.
573 */
574 if (!pin)
575 return 0;
576
577 if ((!pin->eld.monitor_present) ||
578 (!pin->eld.eld_valid)) {
579
580 dev_warn(&hdac->hdac.dev,
581 "Failed: montior present? %d ELD valid?: %d for pin: %d\n",
582 pin->eld.monitor_present, pin->eld.eld_valid, pin->nid);
583
584 return 0;
585 }
586
587 dai_map->pin = pin;
588
589 hdac_hdmi_enable_cvt(hdac, dai_map);
590 ret = hdac_hdmi_enable_pin(hdac, dai_map);
591 if (ret < 0)
592 return ret;
593
594 ret = hdac_hdmi_eld_limit_formats(substream->runtime,
595 pin->eld.eld_buffer);
596 if (ret < 0)
597 return ret;
598
599 return snd_pcm_hw_constraint_eld(substream->runtime,
600 pin->eld.eld_buffer);
601 }
602
603 static int hdac_hdmi_trigger(struct snd_pcm_substream *substream, int cmd,
604 struct snd_soc_dai *dai)
605 {
606 struct hdac_hdmi_dai_pin_map *dai_map;
607 struct hdac_ext_device *hdac = snd_soc_dai_get_drvdata(dai);
608 struct hdac_hdmi_priv *hdmi = hdac->private_data;
609 int ret;
610
611 dai_map = &hdmi->dai_map[dai->id];
612 if (cmd == SNDRV_PCM_TRIGGER_RESUME) {
613 ret = hdac_hdmi_enable_pin(hdac, dai_map);
614 if (ret < 0)
615 return ret;
616
617 return hdac_hdmi_playback_prepare(substream, dai);
618 }
619
620 return 0;
621 }
622
623 static void hdac_hdmi_pcm_close(struct snd_pcm_substream *substream,
624 struct snd_soc_dai *dai)
625 {
626 struct hdac_ext_device *hdac = snd_soc_dai_get_drvdata(dai);
627 struct hdac_hdmi_priv *hdmi = hdac->private_data;
628 struct hdac_hdmi_dai_pin_map *dai_map;
629
630 dai_map = &hdmi->dai_map[dai->id];
631
632 if (dai_map->pin) {
633 snd_hdac_codec_write(&hdac->hdac, dai_map->cvt->nid, 0,
634 AC_VERB_SET_CHANNEL_STREAMID, 0);
635 snd_hdac_codec_write(&hdac->hdac, dai_map->cvt->nid, 0,
636 AC_VERB_SET_STREAM_FORMAT, 0);
637
638 hdac_hdmi_set_power_state(hdac, dai_map, AC_PWRST_D3);
639
640 snd_hdac_codec_write(&hdac->hdac, dai_map->pin->nid, 0,
641 AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_MUTE);
642
643 dai_map->pin = NULL;
644 }
645 }
646
647 static int
648 hdac_hdmi_query_cvt_params(struct hdac_device *hdac, struct hdac_hdmi_cvt *cvt)
649 {
650 int err;
651
652 /* Only stereo supported as of now */
653 cvt->params.channels_min = cvt->params.channels_max = 2;
654
655 err = snd_hdac_query_supported_pcm(hdac, cvt->nid,
656 &cvt->params.rates,
657 &cvt->params.formats,
658 &cvt->params.maxbps);
659 if (err < 0)
660 dev_err(&hdac->dev,
661 "Failed to query pcm params for nid %d: %d\n",
662 cvt->nid, err);
663
664 return err;
665 }
666
667 static int hdac_hdmi_fill_widget_info(struct device *dev,
668 struct snd_soc_dapm_widget *w,
669 enum snd_soc_dapm_type id, void *priv,
670 const char *wname, const char *stream,
671 struct snd_kcontrol_new *wc, int numkc)
672 {
673 w->id = id;
674 w->name = devm_kstrdup(dev, wname, GFP_KERNEL);
675 if (!w->name)
676 return -ENOMEM;
677
678 w->sname = stream;
679 w->reg = SND_SOC_NOPM;
680 w->shift = 0;
681 w->kcontrol_news = wc;
682 w->num_kcontrols = numkc;
683 w->priv = priv;
684
685 return 0;
686 }
687
688 static void hdac_hdmi_fill_route(struct snd_soc_dapm_route *route,
689 const char *sink, const char *control, const char *src,
690 int (*handler)(struct snd_soc_dapm_widget *src,
691 struct snd_soc_dapm_widget *sink))
692 {
693 route->sink = sink;
694 route->source = src;
695 route->control = control;
696 route->connected = handler;
697 }
698
699 static struct hdac_hdmi_pcm *hdac_hdmi_get_pcm(struct hdac_ext_device *edev,
700 struct hdac_hdmi_pin *pin)
701 {
702 struct hdac_hdmi_priv *hdmi = edev->private_data;
703 struct hdac_hdmi_pcm *pcm = NULL;
704
705 list_for_each_entry(pcm, &hdmi->pcm_list, head) {
706 if (pcm->pin == pin)
707 return pcm;
708 }
709
710 return NULL;
711 }
712
713 /*
714 * Based on user selection, map the PINs with the PCMs.
715 */
716 static int hdac_hdmi_set_pin_mux(struct snd_kcontrol *kcontrol,
717 struct snd_ctl_elem_value *ucontrol)
718 {
719 int ret;
720 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
721 struct snd_soc_dapm_widget *w = snd_soc_dapm_kcontrol_widget(kcontrol);
722 struct snd_soc_dapm_context *dapm = w->dapm;
723 struct hdac_hdmi_pin *pin = w->priv;
724 struct hdac_ext_device *edev = to_hda_ext_device(dapm->dev);
725 struct hdac_hdmi_priv *hdmi = edev->private_data;
726 struct hdac_hdmi_pcm *pcm = NULL;
727 const char *cvt_name = e->texts[ucontrol->value.enumerated.item[0]];
728
729 ret = snd_soc_dapm_put_enum_double(kcontrol, ucontrol);
730 if (ret < 0)
731 return ret;
732
733 mutex_lock(&hdmi->pin_mutex);
734 list_for_each_entry(pcm, &hdmi->pcm_list, head) {
735 if (pcm->pin == pin)
736 pcm->pin = NULL;
737
738 /*
739 * Jack status is not reported during device probe as the
740 * PCMs are not registered by then. So report it here.
741 */
742 if (!strcmp(cvt_name, pcm->cvt->name) && !pcm->pin) {
743 pcm->pin = pin;
744 if (pin->eld.monitor_present && pin->eld.eld_valid) {
745 dev_dbg(&edev->hdac.dev,
746 "jack report for pcm=%d\n",
747 pcm->pcm_id);
748
749 snd_jack_report(pcm->jack, SND_JACK_AVOUT);
750 }
751 mutex_unlock(&hdmi->pin_mutex);
752 return ret;
753 }
754 }
755 mutex_unlock(&hdmi->pin_mutex);
756
757 return ret;
758 }
759
760 /*
761 * Ideally the Mux inputs should be based on the num_muxs enumerated, but
762 * the display driver seem to be programming the connection list for the pin
763 * widget runtime.
764 *
765 * So programming all the possible inputs for the mux, the user has to take
766 * care of selecting the right one and leaving all other inputs selected to
767 * "NONE"
768 */
769 static int hdac_hdmi_create_pin_muxs(struct hdac_ext_device *edev,
770 struct hdac_hdmi_pin *pin,
771 struct snd_soc_dapm_widget *widget,
772 const char *widget_name)
773 {
774 struct hdac_hdmi_priv *hdmi = edev->private_data;
775 struct snd_kcontrol_new *kc;
776 struct hdac_hdmi_cvt *cvt;
777 struct soc_enum *se;
778 char kc_name[NAME_SIZE];
779 char mux_items[NAME_SIZE];
780 /* To hold inputs to the Pin mux */
781 char *items[HDA_MAX_CONNECTIONS];
782 int i = 0;
783 int num_items = hdmi->num_cvt + 1;
784
785 kc = devm_kzalloc(&edev->hdac.dev, sizeof(*kc), GFP_KERNEL);
786 if (!kc)
787 return -ENOMEM;
788
789 se = devm_kzalloc(&edev->hdac.dev, sizeof(*se), GFP_KERNEL);
790 if (!se)
791 return -ENOMEM;
792
793 sprintf(kc_name, "Pin %d Input", pin->nid);
794 kc->name = devm_kstrdup(&edev->hdac.dev, kc_name, GFP_KERNEL);
795 if (!kc->name)
796 return -ENOMEM;
797
798 kc->private_value = (long)se;
799 kc->iface = SNDRV_CTL_ELEM_IFACE_MIXER;
800 kc->access = 0;
801 kc->info = snd_soc_info_enum_double;
802 kc->put = hdac_hdmi_set_pin_mux;
803 kc->get = snd_soc_dapm_get_enum_double;
804
805 se->reg = SND_SOC_NOPM;
806
807 /* enum texts: ["NONE", "cvt #", "cvt #", ...] */
808 se->items = num_items;
809 se->mask = roundup_pow_of_two(se->items) - 1;
810
811 sprintf(mux_items, "NONE");
812 items[i] = devm_kstrdup(&edev->hdac.dev, mux_items, GFP_KERNEL);
813 if (!items[i])
814 return -ENOMEM;
815
816 list_for_each_entry(cvt, &hdmi->cvt_list, head) {
817 i++;
818 sprintf(mux_items, "cvt %d", cvt->nid);
819 items[i] = devm_kstrdup(&edev->hdac.dev, mux_items, GFP_KERNEL);
820 if (!items[i])
821 return -ENOMEM;
822 }
823
824 se->texts = devm_kmemdup(&edev->hdac.dev, items,
825 (num_items * sizeof(char *)), GFP_KERNEL);
826 if (!se->texts)
827 return -ENOMEM;
828
829 return hdac_hdmi_fill_widget_info(&edev->hdac.dev, widget,
830 snd_soc_dapm_mux, pin, widget_name, NULL, kc, 1);
831 }
832
833 /* Add cvt <- input <- mux route map */
834 static void hdac_hdmi_add_pinmux_cvt_route(struct hdac_ext_device *edev,
835 struct snd_soc_dapm_widget *widgets,
836 struct snd_soc_dapm_route *route, int rindex)
837 {
838 struct hdac_hdmi_priv *hdmi = edev->private_data;
839 const struct snd_kcontrol_new *kc;
840 struct soc_enum *se;
841 int mux_index = hdmi->num_cvt + hdmi->num_pin;
842 int i, j;
843
844 for (i = 0; i < hdmi->num_pin; i++) {
845 kc = widgets[mux_index].kcontrol_news;
846 se = (struct soc_enum *)kc->private_value;
847 for (j = 0; j < hdmi->num_cvt; j++) {
848 hdac_hdmi_fill_route(&route[rindex],
849 widgets[mux_index].name,
850 se->texts[j + 1],
851 widgets[j].name, NULL);
852
853 rindex++;
854 }
855
856 mux_index++;
857 }
858 }
859
860 /*
861 * Widgets are added in the below sequence
862 * Converter widgets for num converters enumerated
863 * Pin widgets for num pins enumerated
864 * Pin mux widgets to represent connenction list of pin widget
865 *
866 * Total widgets elements = num_cvt + num_pin + num_pin;
867 *
868 * Routes are added as below:
869 * pin mux -> pin (based on num_pins)
870 * cvt -> "Input sel control" -> pin_mux
871 *
872 * Total route elements:
873 * num_pins + (pin_muxes * num_cvt)
874 */
875 static int create_fill_widget_route_map(struct snd_soc_dapm_context *dapm)
876 {
877 struct snd_soc_dapm_widget *widgets;
878 struct snd_soc_dapm_route *route;
879 struct hdac_ext_device *edev = to_hda_ext_device(dapm->dev);
880 struct hdac_hdmi_priv *hdmi = edev->private_data;
881 struct snd_soc_dai_driver *dai_drv = dapm->component->dai_drv;
882 char widget_name[NAME_SIZE];
883 struct hdac_hdmi_cvt *cvt;
884 struct hdac_hdmi_pin *pin;
885 int ret, i = 0, num_routes = 0;
886
887 if (list_empty(&hdmi->cvt_list) || list_empty(&hdmi->pin_list))
888 return -EINVAL;
889
890 widgets = devm_kzalloc(dapm->dev,
891 (sizeof(*widgets) * ((2 * hdmi->num_pin) + hdmi->num_cvt)),
892 GFP_KERNEL);
893
894 if (!widgets)
895 return -ENOMEM;
896
897 /* DAPM widgets to represent each converter widget */
898 list_for_each_entry(cvt, &hdmi->cvt_list, head) {
899 sprintf(widget_name, "Converter %d", cvt->nid);
900 ret = hdac_hdmi_fill_widget_info(dapm->dev, &widgets[i],
901 snd_soc_dapm_aif_in, &cvt->nid,
902 widget_name, dai_drv[i].playback.stream_name, NULL, 0);
903 if (ret < 0)
904 return ret;
905 i++;
906 }
907
908 list_for_each_entry(pin, &hdmi->pin_list, head) {
909 sprintf(widget_name, "hif%d Output", pin->nid);
910 ret = hdac_hdmi_fill_widget_info(dapm->dev, &widgets[i],
911 snd_soc_dapm_output, &pin->nid,
912 widget_name, NULL, NULL, 0);
913 if (ret < 0)
914 return ret;
915 i++;
916 }
917
918 /* DAPM widgets to represent the connection list to pin widget */
919 list_for_each_entry(pin, &hdmi->pin_list, head) {
920 sprintf(widget_name, "Pin %d Mux", pin->nid);
921 ret = hdac_hdmi_create_pin_muxs(edev, pin, &widgets[i],
922 widget_name);
923 if (ret < 0)
924 return ret;
925 i++;
926
927 /* For cvt to pin_mux mapping */
928 num_routes += hdmi->num_cvt;
929
930 /* For pin_mux to pin mapping */
931 num_routes++;
932 }
933
934 route = devm_kzalloc(dapm->dev, (sizeof(*route) * num_routes),
935 GFP_KERNEL);
936 if (!route)
937 return -ENOMEM;
938
939 i = 0;
940 /* Add pin <- NULL <- mux route map */
941 list_for_each_entry(pin, &hdmi->pin_list, head) {
942 int sink_index = i + hdmi->num_cvt;
943 int src_index = sink_index + hdmi->num_pin;
944
945 hdac_hdmi_fill_route(&route[i],
946 widgets[sink_index].name, NULL,
947 widgets[src_index].name, NULL);
948 i++;
949
950 }
951
952 hdac_hdmi_add_pinmux_cvt_route(edev, widgets, route, i);
953
954 snd_soc_dapm_new_controls(dapm, widgets,
955 ((2 * hdmi->num_pin) + hdmi->num_cvt));
956
957 snd_soc_dapm_add_routes(dapm, route, num_routes);
958 snd_soc_dapm_new_widgets(dapm->card);
959
960 return 0;
961
962 }
963
964 static int hdac_hdmi_init_dai_map(struct hdac_ext_device *edev)
965 {
966 struct hdac_hdmi_priv *hdmi = edev->private_data;
967 struct hdac_hdmi_dai_pin_map *dai_map;
968 struct hdac_hdmi_cvt *cvt;
969 int dai_id = 0;
970
971 if (list_empty(&hdmi->cvt_list))
972 return -EINVAL;
973
974 list_for_each_entry(cvt, &hdmi->cvt_list, head) {
975 dai_map = &hdmi->dai_map[dai_id];
976 dai_map->dai_id = dai_id;
977 dai_map->cvt = cvt;
978
979 dai_id++;
980
981 if (dai_id == HDA_MAX_CVTS) {
982 dev_warn(&edev->hdac.dev,
983 "Max dais supported: %d\n", dai_id);
984 break;
985 }
986 }
987
988 return 0;
989 }
990
991 static int hdac_hdmi_add_cvt(struct hdac_ext_device *edev, hda_nid_t nid)
992 {
993 struct hdac_hdmi_priv *hdmi = edev->private_data;
994 struct hdac_hdmi_cvt *cvt;
995 char name[NAME_SIZE];
996
997 cvt = kzalloc(sizeof(*cvt), GFP_KERNEL);
998 if (!cvt)
999 return -ENOMEM;
1000
1001 cvt->nid = nid;
1002 sprintf(name, "cvt %d", cvt->nid);
1003 cvt->name = kstrdup(name, GFP_KERNEL);
1004
1005 list_add_tail(&cvt->head, &hdmi->cvt_list);
1006 hdmi->num_cvt++;
1007
1008 return hdac_hdmi_query_cvt_params(&edev->hdac, cvt);
1009 }
1010
1011 static void hdac_hdmi_present_sense(struct hdac_hdmi_pin *pin, int repoll)
1012 {
1013 struct hdac_ext_device *edev = pin->edev;
1014 struct hdac_hdmi_priv *hdmi = edev->private_data;
1015 struct hdac_hdmi_pcm *pcm;
1016 int val;
1017
1018 pin->repoll_count = repoll;
1019
1020 pm_runtime_get_sync(&edev->hdac.dev);
1021 val = snd_hdac_codec_read(&edev->hdac, pin->nid, 0,
1022 AC_VERB_GET_PIN_SENSE, 0);
1023
1024 dev_dbg(&edev->hdac.dev, "Pin sense val %x for pin: %d\n",
1025 val, pin->nid);
1026
1027
1028 mutex_lock(&hdmi->pin_mutex);
1029 pin->eld.monitor_present = !!(val & AC_PINSENSE_PRESENCE);
1030 pin->eld.eld_valid = !!(val & AC_PINSENSE_ELDV);
1031
1032 pcm = hdac_hdmi_get_pcm(edev, pin);
1033
1034 if (!pin->eld.monitor_present || !pin->eld.eld_valid) {
1035
1036 dev_dbg(&edev->hdac.dev, "%s: disconnect for pin %d\n",
1037 __func__, pin->nid);
1038
1039 /*
1040 * PCMs are not registered during device probe, so don't
1041 * report jack here. It will be done in usermode mux
1042 * control select.
1043 */
1044 if (pcm) {
1045 dev_dbg(&edev->hdac.dev,
1046 "jack report for pcm=%d\n", pcm->pcm_id);
1047
1048 snd_jack_report(pcm->jack, 0);
1049 }
1050
1051 mutex_unlock(&hdmi->pin_mutex);
1052 goto put_hdac_device;
1053 }
1054
1055 if (pin->eld.monitor_present && pin->eld.eld_valid) {
1056 /* TODO: use i915 component for reading ELD later */
1057 if (hdac_hdmi_get_eld(&edev->hdac, pin->nid,
1058 pin->eld.eld_buffer,
1059 &pin->eld.eld_size) == 0) {
1060
1061 if (pcm) {
1062 dev_dbg(&edev->hdac.dev,
1063 "jack report for pcm=%d\n",
1064 pcm->pcm_id);
1065
1066 snd_jack_report(pcm->jack, SND_JACK_AVOUT);
1067 }
1068
1069 print_hex_dump_bytes("ELD: ", DUMP_PREFIX_OFFSET,
1070 pin->eld.eld_buffer, pin->eld.eld_size);
1071 } else {
1072 pin->eld.monitor_present = false;
1073 pin->eld.eld_valid = false;
1074
1075 if (pcm) {
1076 dev_dbg(&edev->hdac.dev,
1077 "jack report for pcm=%d\n",
1078 pcm->pcm_id);
1079
1080 snd_jack_report(pcm->jack, 0);
1081 }
1082 }
1083 }
1084
1085 mutex_unlock(&hdmi->pin_mutex);
1086
1087 /*
1088 * Sometimes the pin_sense may present invalid monitor
1089 * present and eld_valid. If ELD data is not valid, loop few
1090 * more times to get correct pin sense and valid ELD.
1091 */
1092 if ((!pin->eld.monitor_present || !pin->eld.eld_valid) && repoll)
1093 schedule_delayed_work(&pin->work, msecs_to_jiffies(300));
1094
1095 put_hdac_device:
1096 pm_runtime_put_sync(&edev->hdac.dev);
1097 }
1098
1099 static void hdac_hdmi_repoll_eld(struct work_struct *work)
1100 {
1101 struct hdac_hdmi_pin *pin =
1102 container_of(to_delayed_work(work), struct hdac_hdmi_pin, work);
1103
1104 /* picked from legacy HDA driver */
1105 if (pin->repoll_count++ > 6)
1106 pin->repoll_count = 0;
1107
1108 hdac_hdmi_present_sense(pin, pin->repoll_count);
1109 }
1110
1111 static int hdac_hdmi_add_pin(struct hdac_ext_device *edev, hda_nid_t nid)
1112 {
1113 struct hdac_hdmi_priv *hdmi = edev->private_data;
1114 struct hdac_hdmi_pin *pin;
1115
1116 pin = kzalloc(sizeof(*pin), GFP_KERNEL);
1117 if (!pin)
1118 return -ENOMEM;
1119
1120 pin->nid = nid;
1121
1122 list_add_tail(&pin->head, &hdmi->pin_list);
1123 hdmi->num_pin++;
1124
1125 pin->edev = edev;
1126 INIT_DELAYED_WORK(&pin->work, hdac_hdmi_repoll_eld);
1127
1128 return 0;
1129 }
1130
1131 #define INTEL_VENDOR_NID 0x08
1132 #define INTEL_GET_VENDOR_VERB 0xf81
1133 #define INTEL_SET_VENDOR_VERB 0x781
1134 #define INTEL_EN_DP12 0x02 /* enable DP 1.2 features */
1135 #define INTEL_EN_ALL_PIN_CVTS 0x01 /* enable 2nd & 3rd pins and convertors */
1136
1137 static void hdac_hdmi_skl_enable_all_pins(struct hdac_device *hdac)
1138 {
1139 unsigned int vendor_param;
1140
1141 vendor_param = snd_hdac_codec_read(hdac, INTEL_VENDOR_NID, 0,
1142 INTEL_GET_VENDOR_VERB, 0);
1143 if (vendor_param == -1 || vendor_param & INTEL_EN_ALL_PIN_CVTS)
1144 return;
1145
1146 vendor_param |= INTEL_EN_ALL_PIN_CVTS;
1147 vendor_param = snd_hdac_codec_read(hdac, INTEL_VENDOR_NID, 0,
1148 INTEL_SET_VENDOR_VERB, vendor_param);
1149 if (vendor_param == -1)
1150 return;
1151 }
1152
1153 static void hdac_hdmi_skl_enable_dp12(struct hdac_device *hdac)
1154 {
1155 unsigned int vendor_param;
1156
1157 vendor_param = snd_hdac_codec_read(hdac, INTEL_VENDOR_NID, 0,
1158 INTEL_GET_VENDOR_VERB, 0);
1159 if (vendor_param == -1 || vendor_param & INTEL_EN_DP12)
1160 return;
1161
1162 /* enable DP1.2 mode */
1163 vendor_param |= INTEL_EN_DP12;
1164 vendor_param = snd_hdac_codec_read(hdac, INTEL_VENDOR_NID, 0,
1165 INTEL_SET_VENDOR_VERB, vendor_param);
1166 if (vendor_param == -1)
1167 return;
1168
1169 }
1170
1171 static struct snd_soc_dai_ops hdmi_dai_ops = {
1172 .startup = hdac_hdmi_pcm_open,
1173 .shutdown = hdac_hdmi_pcm_close,
1174 .hw_params = hdac_hdmi_set_hw_params,
1175 .prepare = hdac_hdmi_playback_prepare,
1176 .trigger = hdac_hdmi_trigger,
1177 .hw_free = hdac_hdmi_playback_cleanup,
1178 };
1179
1180 /*
1181 * Each converter can support a stream independently. So a dai is created
1182 * based on the number of converter queried.
1183 */
1184 static int hdac_hdmi_create_dais(struct hdac_device *hdac,
1185 struct snd_soc_dai_driver **dais,
1186 struct hdac_hdmi_priv *hdmi, int num_dais)
1187 {
1188 struct snd_soc_dai_driver *hdmi_dais;
1189 struct hdac_hdmi_cvt *cvt;
1190 char name[NAME_SIZE], dai_name[NAME_SIZE];
1191 int i = 0;
1192 u32 rates, bps;
1193 unsigned int rate_max = 384000, rate_min = 8000;
1194 u64 formats;
1195 int ret;
1196
1197 hdmi_dais = devm_kzalloc(&hdac->dev,
1198 (sizeof(*hdmi_dais) * num_dais),
1199 GFP_KERNEL);
1200 if (!hdmi_dais)
1201 return -ENOMEM;
1202
1203 list_for_each_entry(cvt, &hdmi->cvt_list, head) {
1204 ret = snd_hdac_query_supported_pcm(hdac, cvt->nid,
1205 &rates, &formats, &bps);
1206 if (ret)
1207 return ret;
1208
1209 sprintf(dai_name, "intel-hdmi-hifi%d", i+1);
1210 hdmi_dais[i].name = devm_kstrdup(&hdac->dev,
1211 dai_name, GFP_KERNEL);
1212
1213 if (!hdmi_dais[i].name)
1214 return -ENOMEM;
1215
1216 snprintf(name, sizeof(name), "hifi%d", i+1);
1217 hdmi_dais[i].playback.stream_name =
1218 devm_kstrdup(&hdac->dev, name, GFP_KERNEL);
1219 if (!hdmi_dais[i].playback.stream_name)
1220 return -ENOMEM;
1221
1222 /*
1223 * Set caps based on capability queried from the converter.
1224 * It will be constrained runtime based on ELD queried.
1225 */
1226 hdmi_dais[i].playback.formats = formats;
1227 hdmi_dais[i].playback.rates = rates;
1228 hdmi_dais[i].playback.rate_max = rate_max;
1229 hdmi_dais[i].playback.rate_min = rate_min;
1230 hdmi_dais[i].playback.channels_min = 2;
1231 hdmi_dais[i].playback.channels_max = 2;
1232 hdmi_dais[i].ops = &hdmi_dai_ops;
1233
1234 i++;
1235 }
1236
1237 *dais = hdmi_dais;
1238
1239 return 0;
1240 }
1241
1242 /*
1243 * Parse all nodes and store the cvt/pin nids in array
1244 * Add one time initialization for pin and cvt widgets
1245 */
1246 static int hdac_hdmi_parse_and_map_nid(struct hdac_ext_device *edev,
1247 struct snd_soc_dai_driver **dais, int *num_dais)
1248 {
1249 hda_nid_t nid;
1250 int i, num_nodes;
1251 struct hdac_device *hdac = &edev->hdac;
1252 struct hdac_hdmi_priv *hdmi = edev->private_data;
1253 int ret;
1254
1255 hdac_hdmi_skl_enable_all_pins(hdac);
1256 hdac_hdmi_skl_enable_dp12(hdac);
1257
1258 num_nodes = snd_hdac_get_sub_nodes(hdac, hdac->afg, &nid);
1259 if (!nid || num_nodes <= 0) {
1260 dev_warn(&hdac->dev, "HDMI: failed to get afg sub nodes\n");
1261 return -EINVAL;
1262 }
1263
1264 hdac->num_nodes = num_nodes;
1265 hdac->start_nid = nid;
1266
1267 for (i = 0; i < hdac->num_nodes; i++, nid++) {
1268 unsigned int caps;
1269 unsigned int type;
1270
1271 caps = get_wcaps(hdac, nid);
1272 type = get_wcaps_type(caps);
1273
1274 if (!(caps & AC_WCAP_DIGITAL))
1275 continue;
1276
1277 switch (type) {
1278
1279 case AC_WID_AUD_OUT:
1280 ret = hdac_hdmi_add_cvt(edev, nid);
1281 if (ret < 0)
1282 return ret;
1283 break;
1284
1285 case AC_WID_PIN:
1286 ret = hdac_hdmi_add_pin(edev, nid);
1287 if (ret < 0)
1288 return ret;
1289 break;
1290 }
1291 }
1292
1293 hdac->end_nid = nid;
1294
1295 if (!hdmi->num_pin || !hdmi->num_cvt)
1296 return -EIO;
1297
1298 ret = hdac_hdmi_create_dais(hdac, dais, hdmi, hdmi->num_cvt);
1299 if (ret) {
1300 dev_err(&hdac->dev, "Failed to create dais with err: %d\n",
1301 ret);
1302 return ret;
1303 }
1304
1305 *num_dais = hdmi->num_cvt;
1306
1307 return hdac_hdmi_init_dai_map(edev);
1308 }
1309
1310 static void hdac_hdmi_eld_notify_cb(void *aptr, int port)
1311 {
1312 struct hdac_ext_device *edev = aptr;
1313 struct hdac_hdmi_priv *hdmi = edev->private_data;
1314 struct hdac_hdmi_pin *pin;
1315 struct snd_soc_codec *codec = edev->scodec;
1316
1317 /* Don't know how this mapping is derived */
1318 hda_nid_t pin_nid = port + 0x04;
1319
1320 dev_dbg(&edev->hdac.dev, "%s: for pin: %d\n", __func__, pin_nid);
1321
1322 /*
1323 * skip notification during system suspend (but not in runtime PM);
1324 * the state will be updated at resume. Also since the ELD and
1325 * connection states are updated in anyway at the end of the resume,
1326 * we can skip it when received during PM process.
1327 */
1328 if (snd_power_get_state(codec->component.card->snd_card) !=
1329 SNDRV_CTL_POWER_D0)
1330 return;
1331
1332 if (atomic_read(&edev->hdac.in_pm))
1333 return;
1334
1335 list_for_each_entry(pin, &hdmi->pin_list, head) {
1336 if (pin->nid == pin_nid)
1337 hdac_hdmi_present_sense(pin, 1);
1338 }
1339 }
1340
1341 static struct i915_audio_component_audio_ops aops = {
1342 .pin_eld_notify = hdac_hdmi_eld_notify_cb,
1343 };
1344
1345 int hdac_hdmi_jack_init(struct snd_soc_dai *dai, int device)
1346 {
1347 char jack_name[NAME_SIZE];
1348 struct snd_soc_codec *codec = dai->codec;
1349 struct hdac_ext_device *edev = snd_soc_codec_get_drvdata(codec);
1350 struct snd_soc_dapm_context *dapm =
1351 snd_soc_component_get_dapm(&codec->component);
1352 struct hdac_hdmi_priv *hdmi = edev->private_data;
1353 struct hdac_hdmi_pcm *pcm;
1354
1355 /*
1356 * this is a new PCM device, create new pcm and
1357 * add to the pcm list
1358 */
1359 pcm = kzalloc(sizeof(*pcm), GFP_KERNEL);
1360 if (!pcm)
1361 return -ENOMEM;
1362 pcm->pcm_id = device;
1363 pcm->cvt = hdmi->dai_map[dai->id].cvt;
1364
1365 list_add_tail(&pcm->head, &hdmi->pcm_list);
1366
1367 sprintf(jack_name, "HDMI/DP, pcm=%d Jack", device);
1368
1369 return snd_jack_new(dapm->card->snd_card, jack_name,
1370 SND_JACK_AVOUT, &pcm->jack, true, false);
1371 }
1372 EXPORT_SYMBOL_GPL(hdac_hdmi_jack_init);
1373
1374 static int hdmi_codec_probe(struct snd_soc_codec *codec)
1375 {
1376 struct hdac_ext_device *edev = snd_soc_codec_get_drvdata(codec);
1377 struct hdac_hdmi_priv *hdmi = edev->private_data;
1378 struct snd_soc_dapm_context *dapm =
1379 snd_soc_component_get_dapm(&codec->component);
1380 struct hdac_hdmi_pin *pin;
1381 int ret;
1382
1383 edev->scodec = codec;
1384
1385 ret = create_fill_widget_route_map(dapm);
1386 if (ret < 0)
1387 return ret;
1388
1389 aops.audio_ptr = edev;
1390 ret = snd_hdac_i915_register_notifier(&aops);
1391 if (ret < 0) {
1392 dev_err(&edev->hdac.dev, "notifier register failed: err: %d\n",
1393 ret);
1394 return ret;
1395 }
1396
1397 list_for_each_entry(pin, &hdmi->pin_list, head)
1398 hdac_hdmi_present_sense(pin, 1);
1399
1400 /* Imp: Store the card pointer in hda_codec */
1401 edev->card = dapm->card->snd_card;
1402
1403 /*
1404 * hdac_device core already sets the state to active and calls
1405 * get_noresume. So enable runtime and set the device to suspend.
1406 */
1407 pm_runtime_enable(&edev->hdac.dev);
1408 pm_runtime_put(&edev->hdac.dev);
1409 pm_runtime_suspend(&edev->hdac.dev);
1410
1411 return 0;
1412 }
1413
1414 static int hdmi_codec_remove(struct snd_soc_codec *codec)
1415 {
1416 struct hdac_ext_device *edev = snd_soc_codec_get_drvdata(codec);
1417
1418 pm_runtime_disable(&edev->hdac.dev);
1419 return 0;
1420 }
1421
1422 #ifdef CONFIG_PM
1423 static int hdmi_codec_resume(struct snd_soc_codec *codec)
1424 {
1425 struct hdac_ext_device *edev = snd_soc_codec_get_drvdata(codec);
1426 struct hdac_hdmi_priv *hdmi = edev->private_data;
1427 struct hdac_hdmi_pin *pin;
1428 struct hdac_device *hdac = &edev->hdac;
1429 struct hdac_bus *bus = hdac->bus;
1430 int err;
1431 unsigned long timeout;
1432
1433 hdac_hdmi_skl_enable_all_pins(&edev->hdac);
1434 hdac_hdmi_skl_enable_dp12(&edev->hdac);
1435
1436 /* Power up afg */
1437 if (!snd_hdac_check_power_state(hdac, hdac->afg, AC_PWRST_D0)) {
1438
1439 snd_hdac_codec_write(hdac, hdac->afg, 0,
1440 AC_VERB_SET_POWER_STATE, AC_PWRST_D0);
1441
1442 /* Wait till power state is set to D0 */
1443 timeout = jiffies + msecs_to_jiffies(1000);
1444 while (!snd_hdac_check_power_state(hdac, hdac->afg, AC_PWRST_D0)
1445 && time_before(jiffies, timeout)) {
1446 msleep(50);
1447 }
1448 }
1449
1450 /*
1451 * As the ELD notify callback request is not entertained while the
1452 * device is in suspend state. Need to manually check detection of
1453 * all pins here.
1454 */
1455 list_for_each_entry(pin, &hdmi->pin_list, head)
1456 hdac_hdmi_present_sense(pin, 1);
1457
1458 /*
1459 * Codec power is turned ON during controller resume.
1460 * Turn it OFF here
1461 */
1462 err = snd_hdac_display_power(bus, false);
1463 if (err < 0) {
1464 dev_err(bus->dev,
1465 "Cannot turn OFF display power on i915, err: %d\n",
1466 err);
1467 return err;
1468 }
1469
1470 return 0;
1471 }
1472 #else
1473 #define hdmi_codec_resume NULL
1474 #endif
1475
1476 static struct snd_soc_codec_driver hdmi_hda_codec = {
1477 .probe = hdmi_codec_probe,
1478 .remove = hdmi_codec_remove,
1479 .resume = hdmi_codec_resume,
1480 .idle_bias_off = true,
1481 };
1482
1483 static int hdac_hdmi_dev_probe(struct hdac_ext_device *edev)
1484 {
1485 struct hdac_device *codec = &edev->hdac;
1486 struct hdac_hdmi_priv *hdmi_priv;
1487 struct snd_soc_dai_driver *hdmi_dais = NULL;
1488 int num_dais = 0;
1489 int ret = 0;
1490
1491 hdmi_priv = devm_kzalloc(&codec->dev, sizeof(*hdmi_priv), GFP_KERNEL);
1492 if (hdmi_priv == NULL)
1493 return -ENOMEM;
1494
1495 edev->private_data = hdmi_priv;
1496
1497 dev_set_drvdata(&codec->dev, edev);
1498
1499 INIT_LIST_HEAD(&hdmi_priv->pin_list);
1500 INIT_LIST_HEAD(&hdmi_priv->cvt_list);
1501 INIT_LIST_HEAD(&hdmi_priv->pcm_list);
1502 mutex_init(&hdmi_priv->pin_mutex);
1503
1504 /*
1505 * Turned off in the runtime_suspend during the first explicit
1506 * pm_runtime_suspend call.
1507 */
1508 ret = snd_hdac_display_power(edev->hdac.bus, true);
1509 if (ret < 0) {
1510 dev_err(&edev->hdac.dev,
1511 "Cannot turn on display power on i915 err: %d\n",
1512 ret);
1513 return ret;
1514 }
1515
1516 ret = hdac_hdmi_parse_and_map_nid(edev, &hdmi_dais, &num_dais);
1517 if (ret < 0) {
1518 dev_err(&codec->dev,
1519 "Failed in parse and map nid with err: %d\n", ret);
1520 return ret;
1521 }
1522
1523 /* ASoC specific initialization */
1524 return snd_soc_register_codec(&codec->dev, &hdmi_hda_codec,
1525 hdmi_dais, num_dais);
1526 }
1527
1528 static int hdac_hdmi_dev_remove(struct hdac_ext_device *edev)
1529 {
1530 struct hdac_hdmi_priv *hdmi = edev->private_data;
1531 struct hdac_hdmi_pin *pin, *pin_next;
1532 struct hdac_hdmi_cvt *cvt, *cvt_next;
1533 struct hdac_hdmi_pcm *pcm, *pcm_next;
1534
1535 snd_soc_unregister_codec(&edev->hdac.dev);
1536
1537 list_for_each_entry_safe(pcm, pcm_next, &hdmi->pcm_list, head) {
1538 pcm->cvt = NULL;
1539 pcm->pin = NULL;
1540 list_del(&pcm->head);
1541 kfree(pcm);
1542 }
1543
1544 list_for_each_entry_safe(cvt, cvt_next, &hdmi->cvt_list, head) {
1545 list_del(&cvt->head);
1546 kfree(cvt->name);
1547 kfree(cvt);
1548 }
1549
1550 list_for_each_entry_safe(pin, pin_next, &hdmi->pin_list, head) {
1551 list_del(&pin->head);
1552 kfree(pin);
1553 }
1554
1555 return 0;
1556 }
1557
1558 #ifdef CONFIG_PM
1559 static int hdac_hdmi_runtime_suspend(struct device *dev)
1560 {
1561 struct hdac_ext_device *edev = to_hda_ext_device(dev);
1562 struct hdac_device *hdac = &edev->hdac;
1563 struct hdac_bus *bus = hdac->bus;
1564 unsigned long timeout;
1565 int err;
1566
1567 dev_dbg(dev, "Enter: %s\n", __func__);
1568
1569 /* controller may not have been initialized for the first time */
1570 if (!bus)
1571 return 0;
1572
1573 /* Power down afg */
1574 if (!snd_hdac_check_power_state(hdac, hdac->afg, AC_PWRST_D3)) {
1575 snd_hdac_codec_write(hdac, hdac->afg, 0,
1576 AC_VERB_SET_POWER_STATE, AC_PWRST_D3);
1577
1578 /* Wait till power state is set to D3 */
1579 timeout = jiffies + msecs_to_jiffies(1000);
1580 while (!snd_hdac_check_power_state(hdac, hdac->afg, AC_PWRST_D3)
1581 && time_before(jiffies, timeout)) {
1582
1583 msleep(50);
1584 }
1585 }
1586
1587 err = snd_hdac_display_power(bus, false);
1588 if (err < 0) {
1589 dev_err(bus->dev, "Cannot turn on display power on i915\n");
1590 return err;
1591 }
1592
1593 return 0;
1594 }
1595
1596 static int hdac_hdmi_runtime_resume(struct device *dev)
1597 {
1598 struct hdac_ext_device *edev = to_hda_ext_device(dev);
1599 struct hdac_device *hdac = &edev->hdac;
1600 struct hdac_bus *bus = hdac->bus;
1601 int err;
1602
1603 dev_dbg(dev, "Enter: %s\n", __func__);
1604
1605 /* controller may not have been initialized for the first time */
1606 if (!bus)
1607 return 0;
1608
1609 err = snd_hdac_display_power(bus, true);
1610 if (err < 0) {
1611 dev_err(bus->dev, "Cannot turn on display power on i915\n");
1612 return err;
1613 }
1614
1615 hdac_hdmi_skl_enable_all_pins(&edev->hdac);
1616 hdac_hdmi_skl_enable_dp12(&edev->hdac);
1617
1618 /* Power up afg */
1619 if (!snd_hdac_check_power_state(hdac, hdac->afg, AC_PWRST_D0))
1620 snd_hdac_codec_write(hdac, hdac->afg, 0,
1621 AC_VERB_SET_POWER_STATE, AC_PWRST_D0);
1622
1623 return 0;
1624 }
1625 #else
1626 #define hdac_hdmi_runtime_suspend NULL
1627 #define hdac_hdmi_runtime_resume NULL
1628 #endif
1629
1630 static const struct dev_pm_ops hdac_hdmi_pm = {
1631 SET_RUNTIME_PM_OPS(hdac_hdmi_runtime_suspend, hdac_hdmi_runtime_resume, NULL)
1632 };
1633
1634 static const struct hda_device_id hdmi_list[] = {
1635 HDA_CODEC_EXT_ENTRY(0x80862809, 0x100000, "Skylake HDMI", 0),
1636 HDA_CODEC_EXT_ENTRY(0x8086280a, 0x100000, "Broxton HDMI", 0),
1637 {}
1638 };
1639
1640 MODULE_DEVICE_TABLE(hdaudio, hdmi_list);
1641
1642 static struct hdac_ext_driver hdmi_driver = {
1643 . hdac = {
1644 .driver = {
1645 .name = "HDMI HDA Codec",
1646 .pm = &hdac_hdmi_pm,
1647 },
1648 .id_table = hdmi_list,
1649 },
1650 .probe = hdac_hdmi_dev_probe,
1651 .remove = hdac_hdmi_dev_remove,
1652 };
1653
1654 static int __init hdmi_init(void)
1655 {
1656 return snd_hda_ext_driver_register(&hdmi_driver);
1657 }
1658
1659 static void __exit hdmi_exit(void)
1660 {
1661 snd_hda_ext_driver_unregister(&hdmi_driver);
1662 }
1663
1664 module_init(hdmi_init);
1665 module_exit(hdmi_exit);
1666
1667 MODULE_LICENSE("GPL v2");
1668 MODULE_DESCRIPTION("HDMI HD codec");
1669 MODULE_AUTHOR("Samreen Nilofer<samreen.nilofer@intel.com>");
1670 MODULE_AUTHOR("Subhransu S. Prusty<subhransu.s.prusty@intel.com>");
Linux with added FPC-III support