xref: /linux/sound/soc/codecs/hdac_hdmi.c (revision 10accd2e6890b57db8e717e9aee91b791f90fe14)
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 <sound/hda_chmap.h>
33 #include "../../hda/local.h"
34 #include "hdac_hdmi.h"
35 
36 #define NAME_SIZE	32
37 
38 #define AMP_OUT_MUTE		0xb080
39 #define AMP_OUT_UNMUTE		0xb000
40 #define PIN_OUT			(AC_PINCTL_OUT_EN)
41 
42 #define HDA_MAX_CONNECTIONS     32
43 
44 #define HDA_MAX_CVTS		3
45 
46 #define ELD_MAX_SIZE    256
47 #define ELD_FIXED_BYTES	20
48 
49 struct hdac_hdmi_cvt_params {
50 	unsigned int channels_min;
51 	unsigned int channels_max;
52 	u32 rates;
53 	u64 formats;
54 	unsigned int maxbps;
55 };
56 
57 struct hdac_hdmi_cvt {
58 	struct list_head head;
59 	hda_nid_t nid;
60 	const char *name;
61 	struct hdac_hdmi_cvt_params params;
62 };
63 
64 /* Currently only spk_alloc, more to be added */
65 struct hdac_hdmi_parsed_eld {
66 	u8 spk_alloc;
67 };
68 
69 struct hdac_hdmi_eld {
70 	bool	monitor_present;
71 	bool	eld_valid;
72 	int	eld_size;
73 	char    eld_buffer[ELD_MAX_SIZE];
74 	struct	hdac_hdmi_parsed_eld info;
75 };
76 
77 struct hdac_hdmi_pin {
78 	struct list_head head;
79 	hda_nid_t nid;
80 	int num_mux_nids;
81 	hda_nid_t mux_nids[HDA_MAX_CONNECTIONS];
82 	struct hdac_hdmi_eld eld;
83 	struct hdac_ext_device *edev;
84 	int repoll_count;
85 	struct delayed_work work;
86 	struct mutex lock;
87 	bool chmap_set;
88 	unsigned char chmap[8]; /* ALSA API channel-map */
89 	int channels; /* current number of channels */
90 };
91 
92 struct hdac_hdmi_pcm {
93 	struct list_head head;
94 	int pcm_id;
95 	struct hdac_hdmi_pin *pin;
96 	struct hdac_hdmi_cvt *cvt;
97 	struct snd_jack *jack;
98 };
99 
100 struct hdac_hdmi_dai_pin_map {
101 	int dai_id;
102 	struct hdac_hdmi_pin *pin;
103 	struct hdac_hdmi_cvt *cvt;
104 };
105 
106 struct hdac_hdmi_priv {
107 	struct hdac_hdmi_dai_pin_map dai_map[HDA_MAX_CVTS];
108 	struct list_head pin_list;
109 	struct list_head cvt_list;
110 	struct list_head pcm_list;
111 	int num_pin;
112 	int num_cvt;
113 	struct mutex pin_mutex;
114 	struct hdac_chmap chmap;
115 };
116 
117 static struct hdac_hdmi_pcm *get_hdmi_pcm_from_id(struct hdac_hdmi_priv *hdmi,
118 						int pcm_idx)
119 {
120 	struct hdac_hdmi_pcm *pcm;
121 
122 	list_for_each_entry(pcm, &hdmi->pcm_list, head) {
123 		if (pcm->pcm_id == pcm_idx)
124 			return pcm;
125 	}
126 
127 	return NULL;
128 }
129 
130 static inline struct hdac_ext_device *to_hda_ext_device(struct device *dev)
131 {
132 	struct hdac_device *hdac = dev_to_hdac_dev(dev);
133 
134 	return to_ehdac_device(hdac);
135 }
136 
137 static unsigned int sad_format(const u8 *sad)
138 {
139 	return ((sad[0] >> 0x3) & 0x1f);
140 }
141 
142 static unsigned int sad_sample_bits_lpcm(const u8 *sad)
143 {
144 	return (sad[2] & 7);
145 }
146 
147 static int hdac_hdmi_eld_limit_formats(struct snd_pcm_runtime *runtime,
148 						void *eld)
149 {
150 	u64 formats = SNDRV_PCM_FMTBIT_S16;
151 	int i;
152 	const u8 *sad, *eld_buf = eld;
153 
154 	sad = drm_eld_sad(eld_buf);
155 	if (!sad)
156 		goto format_constraint;
157 
158 	for (i = drm_eld_sad_count(eld_buf); i > 0; i--, sad += 3) {
159 		if (sad_format(sad) == 1) { /* AUDIO_CODING_TYPE_LPCM */
160 
161 			/*
162 			 * the controller support 20 and 24 bits in 32 bit
163 			 * container so we set S32
164 			 */
165 			if (sad_sample_bits_lpcm(sad) & 0x6)
166 				formats |= SNDRV_PCM_FMTBIT_S32;
167 		}
168 	}
169 
170 format_constraint:
171 	return snd_pcm_hw_constraint_mask64(runtime, SNDRV_PCM_HW_PARAM_FORMAT,
172 				formats);
173 
174 }
175 
176  /* HDMI ELD routines */
177 static unsigned int hdac_hdmi_get_eld_data(struct hdac_device *codec,
178 				hda_nid_t nid, int byte_index)
179 {
180 	unsigned int val;
181 
182 	val = snd_hdac_codec_read(codec, nid, 0, AC_VERB_GET_HDMI_ELDD,
183 							byte_index);
184 
185 	dev_dbg(&codec->dev, "HDMI: ELD data byte %d: 0x%x\n",
186 					byte_index, val);
187 
188 	return val;
189 }
190 
191 static int hdac_hdmi_get_eld_size(struct hdac_device *codec, hda_nid_t nid)
192 {
193 	return snd_hdac_codec_read(codec, nid, 0, AC_VERB_GET_HDMI_DIP_SIZE,
194 						 AC_DIPSIZE_ELD_BUF);
195 }
196 
197 /*
198  * This function queries the ELD size and ELD data and fills in the buffer
199  * passed by user
200  */
201 static int hdac_hdmi_get_eld(struct hdac_device *codec, hda_nid_t nid,
202 			     unsigned char *buf, int *eld_size)
203 {
204 	int i, size, ret = 0;
205 
206 	/*
207 	 * ELD size is initialized to zero in caller function. If no errors and
208 	 * ELD is valid, actual eld_size is assigned.
209 	 */
210 
211 	size = hdac_hdmi_get_eld_size(codec, nid);
212 	if (size < ELD_FIXED_BYTES || size > ELD_MAX_SIZE) {
213 		dev_err(&codec->dev, "HDMI: invalid ELD buf size %d\n", size);
214 		return -ERANGE;
215 	}
216 
217 	/* set ELD buffer */
218 	for (i = 0; i < size; i++) {
219 		unsigned int val = hdac_hdmi_get_eld_data(codec, nid, i);
220 		/*
221 		 * Graphics driver might be writing to ELD buffer right now.
222 		 * Just abort. The caller will repoll after a while.
223 		 */
224 		if (!(val & AC_ELDD_ELD_VALID)) {
225 			dev_err(&codec->dev,
226 				"HDMI: invalid ELD data byte %d\n", i);
227 			ret = -EINVAL;
228 			goto error;
229 		}
230 		val &= AC_ELDD_ELD_DATA;
231 		/*
232 		 * The first byte cannot be zero. This can happen on some DVI
233 		 * connections. Some Intel chips may also need some 250ms delay
234 		 * to return non-zero ELD data, even when the graphics driver
235 		 * correctly writes ELD content before setting ELD_valid bit.
236 		 */
237 		if (!val && !i) {
238 			dev_err(&codec->dev, "HDMI: 0 ELD data\n");
239 			ret = -EINVAL;
240 			goto error;
241 		}
242 		buf[i] = val;
243 	}
244 
245 	*eld_size = size;
246 error:
247 	return ret;
248 }
249 
250 static int hdac_hdmi_setup_stream(struct hdac_ext_device *hdac,
251 				hda_nid_t cvt_nid, hda_nid_t pin_nid,
252 				u32 stream_tag, int format)
253 {
254 	unsigned int val;
255 
256 	dev_dbg(&hdac->hdac.dev, "cvt nid %d pnid %d stream %d format 0x%x\n",
257 			cvt_nid, pin_nid, stream_tag, format);
258 
259 	val = (stream_tag << 4);
260 
261 	snd_hdac_codec_write(&hdac->hdac, cvt_nid, 0,
262 				AC_VERB_SET_CHANNEL_STREAMID, val);
263 	snd_hdac_codec_write(&hdac->hdac, cvt_nid, 0,
264 				AC_VERB_SET_STREAM_FORMAT, format);
265 
266 	return 0;
267 }
268 
269 static void
270 hdac_hdmi_set_dip_index(struct hdac_ext_device *hdac, hda_nid_t pin_nid,
271 				int packet_index, int byte_index)
272 {
273 	int val;
274 
275 	val = (packet_index << 5) | (byte_index & 0x1f);
276 
277 	snd_hdac_codec_write(&hdac->hdac, pin_nid, 0,
278 				AC_VERB_SET_HDMI_DIP_INDEX, val);
279 }
280 
281 struct dp_audio_infoframe {
282 	u8 type; /* 0x84 */
283 	u8 len;  /* 0x1b */
284 	u8 ver;  /* 0x11 << 2 */
285 
286 	u8 CC02_CT47;	/* match with HDMI infoframe from this on */
287 	u8 SS01_SF24;
288 	u8 CXT04;
289 	u8 CA;
290 	u8 LFEPBL01_LSV36_DM_INH7;
291 };
292 
293 static int hdac_hdmi_setup_audio_infoframe(struct hdac_ext_device *hdac,
294 				hda_nid_t cvt_nid, hda_nid_t pin_nid)
295 {
296 	uint8_t buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AUDIO_INFOFRAME_SIZE];
297 	struct hdmi_audio_infoframe frame;
298 	struct dp_audio_infoframe dp_ai;
299 	struct hdac_hdmi_priv *hdmi = hdac->private_data;
300 	struct hdac_hdmi_pin *pin;
301 	u8 *dip;
302 	int ret;
303 	int i;
304 	const u8 *eld_buf;
305 	u8 conn_type;
306 	int channels, ca;
307 
308 	list_for_each_entry(pin, &hdmi->pin_list, head) {
309 		if (pin->nid == pin_nid)
310 			break;
311 	}
312 
313 	ca = snd_hdac_channel_allocation(&hdac->hdac, pin->eld.info.spk_alloc,
314 			pin->channels, pin->chmap_set, true, pin->chmap);
315 
316 	channels = snd_hdac_get_active_channels(ca);
317 	hdmi->chmap.ops.set_channel_count(&hdac->hdac, cvt_nid, channels);
318 
319 	snd_hdac_setup_channel_mapping(&hdmi->chmap, pin->nid, false, ca,
320 				pin->channels, pin->chmap, pin->chmap_set);
321 
322 	eld_buf = pin->eld.eld_buffer;
323 	conn_type = drm_eld_get_conn_type(eld_buf);
324 
325 	switch (conn_type) {
326 	case DRM_ELD_CONN_TYPE_HDMI:
327 		hdmi_audio_infoframe_init(&frame);
328 
329 		frame.channels = channels;
330 		frame.channel_allocation = ca;
331 
332 		ret = hdmi_audio_infoframe_pack(&frame, buffer, sizeof(buffer));
333 		if (ret < 0)
334 			return ret;
335 
336 		break;
337 
338 	case DRM_ELD_CONN_TYPE_DP:
339 		memset(&dp_ai, 0, sizeof(dp_ai));
340 		dp_ai.type	= 0x84;
341 		dp_ai.len	= 0x1b;
342 		dp_ai.ver	= 0x11 << 2;
343 		dp_ai.CC02_CT47	= channels - 1;
344 		dp_ai.CA	= ca;
345 
346 		dip = (u8 *)&dp_ai;
347 		break;
348 
349 	default:
350 		dev_err(&hdac->hdac.dev, "Invalid connection type: %d\n",
351 						conn_type);
352 		return -EIO;
353 	}
354 
355 	/* stop infoframe transmission */
356 	hdac_hdmi_set_dip_index(hdac, pin_nid, 0x0, 0x0);
357 	snd_hdac_codec_write(&hdac->hdac, pin_nid, 0,
358 			AC_VERB_SET_HDMI_DIP_XMIT, AC_DIPXMIT_DISABLE);
359 
360 
361 	/*  Fill infoframe. Index auto-incremented */
362 	hdac_hdmi_set_dip_index(hdac, pin_nid, 0x0, 0x0);
363 	if (conn_type == DRM_ELD_CONN_TYPE_HDMI) {
364 		for (i = 0; i < sizeof(buffer); i++)
365 			snd_hdac_codec_write(&hdac->hdac, pin_nid, 0,
366 				AC_VERB_SET_HDMI_DIP_DATA, buffer[i]);
367 	} else {
368 		for (i = 0; i < sizeof(dp_ai); i++)
369 			snd_hdac_codec_write(&hdac->hdac, pin_nid, 0,
370 				AC_VERB_SET_HDMI_DIP_DATA, dip[i]);
371 	}
372 
373 	/* Start infoframe */
374 	hdac_hdmi_set_dip_index(hdac, pin_nid, 0x0, 0x0);
375 	snd_hdac_codec_write(&hdac->hdac, pin_nid, 0,
376 			AC_VERB_SET_HDMI_DIP_XMIT, AC_DIPXMIT_BEST);
377 
378 	return 0;
379 }
380 
381 static void hdac_hdmi_set_power_state(struct hdac_ext_device *edev,
382 		struct hdac_hdmi_dai_pin_map *dai_map, unsigned int pwr_state)
383 {
384 	/* Power up pin widget */
385 	if (!snd_hdac_check_power_state(&edev->hdac, dai_map->pin->nid,
386 						pwr_state))
387 		snd_hdac_codec_write(&edev->hdac, dai_map->pin->nid, 0,
388 			AC_VERB_SET_POWER_STATE, pwr_state);
389 
390 	/* Power up converter */
391 	if (!snd_hdac_check_power_state(&edev->hdac, dai_map->cvt->nid,
392 						pwr_state))
393 		snd_hdac_codec_write(&edev->hdac, dai_map->cvt->nid, 0,
394 			AC_VERB_SET_POWER_STATE, pwr_state);
395 }
396 
397 static int hdac_hdmi_playback_prepare(struct snd_pcm_substream *substream,
398 				struct snd_soc_dai *dai)
399 {
400 	struct hdac_ext_device *hdac = snd_soc_dai_get_drvdata(dai);
401 	struct hdac_hdmi_priv *hdmi = hdac->private_data;
402 	struct hdac_hdmi_dai_pin_map *dai_map;
403 	struct hdac_hdmi_pin *pin;
404 	struct hdac_ext_dma_params *dd;
405 	int ret;
406 
407 	dai_map = &hdmi->dai_map[dai->id];
408 	pin = dai_map->pin;
409 
410 	dd = (struct hdac_ext_dma_params *)snd_soc_dai_get_dma_data(dai, substream);
411 	dev_dbg(&hdac->hdac.dev, "stream tag from cpu dai %d format in cvt 0x%x\n",
412 			dd->stream_tag,	dd->format);
413 
414 	mutex_lock(&pin->lock);
415 	pin->channels = substream->runtime->channels;
416 
417 	ret = hdac_hdmi_setup_audio_infoframe(hdac, dai_map->cvt->nid,
418 						dai_map->pin->nid);
419 	mutex_unlock(&pin->lock);
420 	if (ret < 0)
421 		return ret;
422 
423 	return hdac_hdmi_setup_stream(hdac, dai_map->cvt->nid,
424 			dai_map->pin->nid, dd->stream_tag, dd->format);
425 }
426 
427 static int hdac_hdmi_set_hw_params(struct snd_pcm_substream *substream,
428 	struct snd_pcm_hw_params *hparams, struct snd_soc_dai *dai)
429 {
430 	struct hdac_ext_device *hdac = snd_soc_dai_get_drvdata(dai);
431 	struct hdac_hdmi_priv *hdmi = hdac->private_data;
432 	struct hdac_hdmi_dai_pin_map *dai_map;
433 	struct hdac_hdmi_pin *pin;
434 	struct hdac_ext_dma_params *dd;
435 
436 	dai_map = &hdmi->dai_map[dai->id];
437 	pin = dai_map->pin;
438 
439 	if (!pin)
440 		return -ENODEV;
441 
442 	if ((!pin->eld.monitor_present) || (!pin->eld.eld_valid)) {
443 		dev_err(&hdac->hdac.dev, "device is not configured for this pin: %d\n",
444 								pin->nid);
445 		return -ENODEV;
446 	}
447 
448 	dd = snd_soc_dai_get_dma_data(dai, substream);
449 	if (!dd) {
450 		dd = kzalloc(sizeof(*dd), GFP_KERNEL);
451 		if (!dd)
452 			return -ENOMEM;
453 	}
454 
455 	dd->format = snd_hdac_calc_stream_format(params_rate(hparams),
456 			params_channels(hparams), params_format(hparams),
457 			24, 0);
458 
459 	snd_soc_dai_set_dma_data(dai, substream, (void *)dd);
460 
461 	return 0;
462 }
463 
464 static int hdac_hdmi_playback_cleanup(struct snd_pcm_substream *substream,
465 		struct snd_soc_dai *dai)
466 {
467 	struct hdac_ext_device *edev = snd_soc_dai_get_drvdata(dai);
468 	struct hdac_ext_dma_params *dd;
469 	struct hdac_hdmi_priv *hdmi = edev->private_data;
470 	struct hdac_hdmi_dai_pin_map *dai_map;
471 
472 	dai_map = &hdmi->dai_map[dai->id];
473 
474 	dd = (struct hdac_ext_dma_params *)snd_soc_dai_get_dma_data(dai, substream);
475 
476 	if (dd) {
477 		snd_soc_dai_set_dma_data(dai, substream, NULL);
478 		kfree(dd);
479 	}
480 
481 	return 0;
482 }
483 
484 static void hdac_hdmi_enable_cvt(struct hdac_ext_device *edev,
485 		struct hdac_hdmi_dai_pin_map *dai_map)
486 {
487 	/* Enable transmission */
488 	snd_hdac_codec_write(&edev->hdac, dai_map->cvt->nid, 0,
489 			AC_VERB_SET_DIGI_CONVERT_1, 1);
490 
491 	/* Category Code (CC) to zero */
492 	snd_hdac_codec_write(&edev->hdac, dai_map->cvt->nid, 0,
493 			AC_VERB_SET_DIGI_CONVERT_2, 0);
494 }
495 
496 static int hdac_hdmi_enable_pin(struct hdac_ext_device *hdac,
497 		struct hdac_hdmi_dai_pin_map *dai_map)
498 {
499 	int mux_idx;
500 	struct hdac_hdmi_pin *pin = dai_map->pin;
501 
502 	for (mux_idx = 0; mux_idx < pin->num_mux_nids; mux_idx++) {
503 		if (pin->mux_nids[mux_idx] == dai_map->cvt->nid) {
504 			snd_hdac_codec_write(&hdac->hdac, pin->nid, 0,
505 					AC_VERB_SET_CONNECT_SEL, mux_idx);
506 			break;
507 		}
508 	}
509 
510 	if (mux_idx == pin->num_mux_nids)
511 		return -EIO;
512 
513 	/* Enable out path for this pin widget */
514 	snd_hdac_codec_write(&hdac->hdac, pin->nid, 0,
515 			AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT);
516 
517 	hdac_hdmi_set_power_state(hdac, dai_map, AC_PWRST_D0);
518 
519 	snd_hdac_codec_write(&hdac->hdac, pin->nid, 0,
520 			AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_UNMUTE);
521 
522 	return 0;
523 }
524 
525 static int hdac_hdmi_query_pin_connlist(struct hdac_ext_device *hdac,
526 					struct hdac_hdmi_pin *pin)
527 {
528 	if (!(get_wcaps(&hdac->hdac, pin->nid) & AC_WCAP_CONN_LIST)) {
529 		dev_warn(&hdac->hdac.dev,
530 			"HDMI: pin %d wcaps %#x does not support connection list\n",
531 			pin->nid, get_wcaps(&hdac->hdac, pin->nid));
532 		return -EINVAL;
533 	}
534 
535 	pin->num_mux_nids = snd_hdac_get_connections(&hdac->hdac, pin->nid,
536 			pin->mux_nids, HDA_MAX_CONNECTIONS);
537 	if (pin->num_mux_nids == 0)
538 		dev_warn(&hdac->hdac.dev, "No connections found for pin: %d\n",
539 								pin->nid);
540 
541 	dev_dbg(&hdac->hdac.dev, "num_mux_nids %d for pin: %d\n",
542 			pin->num_mux_nids, pin->nid);
543 
544 	return pin->num_mux_nids;
545 }
546 
547 /*
548  * Query pcm list and return pin widget to which stream is routed.
549  *
550  * Also query connection list of the pin, to validate the cvt to pin map.
551  *
552  * Same stream rendering to multiple pins simultaneously can be done
553  * possibly, but not supported for now in driver. So return the first pin
554  * connected.
555  */
556 static struct hdac_hdmi_pin *hdac_hdmi_get_pin_from_cvt(
557 			struct hdac_ext_device *edev,
558 			struct hdac_hdmi_priv *hdmi,
559 			struct hdac_hdmi_cvt *cvt)
560 {
561 	struct hdac_hdmi_pcm *pcm;
562 	struct hdac_hdmi_pin *pin = NULL;
563 	int ret, i;
564 
565 	list_for_each_entry(pcm, &hdmi->pcm_list, head) {
566 		if (pcm->cvt == cvt) {
567 			pin = pcm->pin;
568 			break;
569 		}
570 	}
571 
572 	if (pin) {
573 		ret = hdac_hdmi_query_pin_connlist(edev, pin);
574 		if (ret < 0)
575 			return NULL;
576 
577 		for (i = 0; i < pin->num_mux_nids; i++) {
578 			if (pin->mux_nids[i] == cvt->nid)
579 				return pin;
580 		}
581 	}
582 
583 	return NULL;
584 }
585 
586 /*
587  * This tries to get a valid pin and set the HW constraints based on the
588  * ELD. Even if a valid pin is not found return success so that device open
589  * doesn't fail.
590  */
591 static int hdac_hdmi_pcm_open(struct snd_pcm_substream *substream,
592 			struct snd_soc_dai *dai)
593 {
594 	struct hdac_ext_device *hdac = snd_soc_dai_get_drvdata(dai);
595 	struct hdac_hdmi_priv *hdmi = hdac->private_data;
596 	struct hdac_hdmi_dai_pin_map *dai_map;
597 	struct hdac_hdmi_cvt *cvt;
598 	struct hdac_hdmi_pin *pin;
599 	int ret;
600 
601 	dai_map = &hdmi->dai_map[dai->id];
602 
603 	cvt = dai_map->cvt;
604 	pin = hdac_hdmi_get_pin_from_cvt(hdac, hdmi, cvt);
605 
606 	/*
607 	 * To make PA and other userland happy.
608 	 * userland scans devices so returning error does not help.
609 	 */
610 	if (!pin)
611 		return 0;
612 
613 	if ((!pin->eld.monitor_present) ||
614 			(!pin->eld.eld_valid)) {
615 
616 		dev_warn(&hdac->hdac.dev,
617 			"Failed: montior present? %d ELD valid?: %d for pin: %d\n",
618 			pin->eld.monitor_present, pin->eld.eld_valid, pin->nid);
619 
620 		return 0;
621 	}
622 
623 	dai_map->pin = pin;
624 
625 	hdac_hdmi_enable_cvt(hdac, dai_map);
626 	ret = hdac_hdmi_enable_pin(hdac, dai_map);
627 	if (ret < 0)
628 		return ret;
629 
630 	ret = hdac_hdmi_eld_limit_formats(substream->runtime,
631 				pin->eld.eld_buffer);
632 	if (ret < 0)
633 		return ret;
634 
635 	return snd_pcm_hw_constraint_eld(substream->runtime,
636 				pin->eld.eld_buffer);
637 }
638 
639 static int hdac_hdmi_trigger(struct snd_pcm_substream *substream, int cmd,
640 		struct snd_soc_dai *dai)
641 {
642 	struct hdac_hdmi_dai_pin_map *dai_map;
643 	struct hdac_ext_device *hdac = snd_soc_dai_get_drvdata(dai);
644 	struct hdac_hdmi_priv *hdmi = hdac->private_data;
645 	int ret;
646 
647 	dai_map = &hdmi->dai_map[dai->id];
648 	if (cmd == SNDRV_PCM_TRIGGER_RESUME) {
649 		ret = hdac_hdmi_enable_pin(hdac, dai_map);
650 		if (ret < 0)
651 			return ret;
652 
653 		return hdac_hdmi_playback_prepare(substream, dai);
654 	}
655 
656 	return 0;
657 }
658 
659 static void hdac_hdmi_pcm_close(struct snd_pcm_substream *substream,
660 		struct snd_soc_dai *dai)
661 {
662 	struct hdac_ext_device *hdac = snd_soc_dai_get_drvdata(dai);
663 	struct hdac_hdmi_priv *hdmi = hdac->private_data;
664 	struct hdac_hdmi_dai_pin_map *dai_map;
665 
666 	dai_map = &hdmi->dai_map[dai->id];
667 
668 	if (dai_map->pin) {
669 		snd_hdac_codec_write(&hdac->hdac, dai_map->cvt->nid, 0,
670 				AC_VERB_SET_CHANNEL_STREAMID, 0);
671 		snd_hdac_codec_write(&hdac->hdac, dai_map->cvt->nid, 0,
672 				AC_VERB_SET_STREAM_FORMAT, 0);
673 
674 		hdac_hdmi_set_power_state(hdac, dai_map, AC_PWRST_D3);
675 
676 		snd_hdac_codec_write(&hdac->hdac, dai_map->pin->nid, 0,
677 			AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_MUTE);
678 
679 		mutex_lock(&dai_map->pin->lock);
680 		dai_map->pin->chmap_set = false;
681 		memset(dai_map->pin->chmap, 0, sizeof(dai_map->pin->chmap));
682 		dai_map->pin->channels = 0;
683 		mutex_unlock(&dai_map->pin->lock);
684 
685 		dai_map->pin = NULL;
686 	}
687 }
688 
689 static int
690 hdac_hdmi_query_cvt_params(struct hdac_device *hdac, struct hdac_hdmi_cvt *cvt)
691 {
692 	unsigned int chans;
693 	struct hdac_ext_device *edev = to_ehdac_device(hdac);
694 	struct hdac_hdmi_priv *hdmi = edev->private_data;
695 	int err;
696 
697 	chans = get_wcaps(hdac, cvt->nid);
698 	chans = get_wcaps_channels(chans);
699 
700 	cvt->params.channels_min = 2;
701 
702 	cvt->params.channels_max = chans;
703 	if (chans > hdmi->chmap.channels_max)
704 		hdmi->chmap.channels_max = chans;
705 
706 	err = snd_hdac_query_supported_pcm(hdac, cvt->nid,
707 			&cvt->params.rates,
708 			&cvt->params.formats,
709 			&cvt->params.maxbps);
710 	if (err < 0)
711 		dev_err(&hdac->dev,
712 			"Failed to query pcm params for nid %d: %d\n",
713 			cvt->nid, err);
714 
715 	return err;
716 }
717 
718 static int hdac_hdmi_fill_widget_info(struct device *dev,
719 				struct snd_soc_dapm_widget *w,
720 				enum snd_soc_dapm_type id, void *priv,
721 				const char *wname, const char *stream,
722 				struct snd_kcontrol_new *wc, int numkc)
723 {
724 	w->id = id;
725 	w->name = devm_kstrdup(dev, wname, GFP_KERNEL);
726 	if (!w->name)
727 		return -ENOMEM;
728 
729 	w->sname = stream;
730 	w->reg = SND_SOC_NOPM;
731 	w->shift = 0;
732 	w->kcontrol_news = wc;
733 	w->num_kcontrols = numkc;
734 	w->priv = priv;
735 
736 	return 0;
737 }
738 
739 static void hdac_hdmi_fill_route(struct snd_soc_dapm_route *route,
740 		const char *sink, const char *control, const char *src,
741 		int (*handler)(struct snd_soc_dapm_widget *src,
742 			struct snd_soc_dapm_widget *sink))
743 {
744 	route->sink = sink;
745 	route->source = src;
746 	route->control = control;
747 	route->connected = handler;
748 }
749 
750 static struct hdac_hdmi_pcm *hdac_hdmi_get_pcm(struct hdac_ext_device *edev,
751 					struct hdac_hdmi_pin *pin)
752 {
753 	struct hdac_hdmi_priv *hdmi = edev->private_data;
754 	struct hdac_hdmi_pcm *pcm = NULL;
755 
756 	list_for_each_entry(pcm, &hdmi->pcm_list, head) {
757 		if (pcm->pin == pin)
758 			return pcm;
759 	}
760 
761 	return NULL;
762 }
763 
764 /*
765  * Based on user selection, map the PINs with the PCMs.
766  */
767 static int hdac_hdmi_set_pin_mux(struct snd_kcontrol *kcontrol,
768 		struct snd_ctl_elem_value *ucontrol)
769 {
770 	int ret;
771 	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
772 	struct snd_soc_dapm_widget *w = snd_soc_dapm_kcontrol_widget(kcontrol);
773 	struct snd_soc_dapm_context *dapm = w->dapm;
774 	struct hdac_hdmi_pin *pin = w->priv;
775 	struct hdac_ext_device *edev = to_hda_ext_device(dapm->dev);
776 	struct hdac_hdmi_priv *hdmi = edev->private_data;
777 	struct hdac_hdmi_pcm *pcm = NULL;
778 	const char *cvt_name =  e->texts[ucontrol->value.enumerated.item[0]];
779 
780 	ret = snd_soc_dapm_put_enum_double(kcontrol, ucontrol);
781 	if (ret < 0)
782 		return ret;
783 
784 	mutex_lock(&hdmi->pin_mutex);
785 	list_for_each_entry(pcm, &hdmi->pcm_list, head) {
786 		if (pcm->pin == pin)
787 			pcm->pin = NULL;
788 
789 		/*
790 		 * Jack status is not reported during device probe as the
791 		 * PCMs are not registered by then. So report it here.
792 		 */
793 		if (!strcmp(cvt_name, pcm->cvt->name) && !pcm->pin) {
794 			pcm->pin = pin;
795 			if (pin->eld.monitor_present && pin->eld.eld_valid) {
796 				dev_dbg(&edev->hdac.dev,
797 					"jack report for pcm=%d\n",
798 					pcm->pcm_id);
799 
800 				snd_jack_report(pcm->jack, SND_JACK_AVOUT);
801 			}
802 			mutex_unlock(&hdmi->pin_mutex);
803 			return ret;
804 		}
805 	}
806 	mutex_unlock(&hdmi->pin_mutex);
807 
808 	return ret;
809 }
810 
811 /*
812  * Ideally the Mux inputs should be based on the num_muxs enumerated, but
813  * the display driver seem to be programming the connection list for the pin
814  * widget runtime.
815  *
816  * So programming all the possible inputs for the mux, the user has to take
817  * care of selecting the right one and leaving all other inputs selected to
818  * "NONE"
819  */
820 static int hdac_hdmi_create_pin_muxs(struct hdac_ext_device *edev,
821 				struct hdac_hdmi_pin *pin,
822 				struct snd_soc_dapm_widget *widget,
823 				const char *widget_name)
824 {
825 	struct hdac_hdmi_priv *hdmi = edev->private_data;
826 	struct snd_kcontrol_new *kc;
827 	struct hdac_hdmi_cvt *cvt;
828 	struct soc_enum *se;
829 	char kc_name[NAME_SIZE];
830 	char mux_items[NAME_SIZE];
831 	/* To hold inputs to the Pin mux */
832 	char *items[HDA_MAX_CONNECTIONS];
833 	int i = 0;
834 	int num_items = hdmi->num_cvt + 1;
835 
836 	kc = devm_kzalloc(&edev->hdac.dev, sizeof(*kc), GFP_KERNEL);
837 	if (!kc)
838 		return -ENOMEM;
839 
840 	se = devm_kzalloc(&edev->hdac.dev, sizeof(*se), GFP_KERNEL);
841 	if (!se)
842 		return -ENOMEM;
843 
844 	sprintf(kc_name, "Pin %d Input", pin->nid);
845 	kc->name = devm_kstrdup(&edev->hdac.dev, kc_name, GFP_KERNEL);
846 	if (!kc->name)
847 		return -ENOMEM;
848 
849 	kc->private_value = (long)se;
850 	kc->iface = SNDRV_CTL_ELEM_IFACE_MIXER;
851 	kc->access = 0;
852 	kc->info = snd_soc_info_enum_double;
853 	kc->put = hdac_hdmi_set_pin_mux;
854 	kc->get = snd_soc_dapm_get_enum_double;
855 
856 	se->reg = SND_SOC_NOPM;
857 
858 	/* enum texts: ["NONE", "cvt #", "cvt #", ...] */
859 	se->items = num_items;
860 	se->mask = roundup_pow_of_two(se->items) - 1;
861 
862 	sprintf(mux_items, "NONE");
863 	items[i] = devm_kstrdup(&edev->hdac.dev, mux_items, GFP_KERNEL);
864 	if (!items[i])
865 		return -ENOMEM;
866 
867 	list_for_each_entry(cvt, &hdmi->cvt_list, head) {
868 		i++;
869 		sprintf(mux_items, "cvt %d", cvt->nid);
870 		items[i] = devm_kstrdup(&edev->hdac.dev, mux_items, GFP_KERNEL);
871 		if (!items[i])
872 			return -ENOMEM;
873 	}
874 
875 	se->texts = devm_kmemdup(&edev->hdac.dev, items,
876 			(num_items  * sizeof(char *)), GFP_KERNEL);
877 	if (!se->texts)
878 		return -ENOMEM;
879 
880 	return hdac_hdmi_fill_widget_info(&edev->hdac.dev, widget,
881 			snd_soc_dapm_mux, pin, widget_name, NULL, kc, 1);
882 }
883 
884 /* Add cvt <- input <- mux route map */
885 static void hdac_hdmi_add_pinmux_cvt_route(struct hdac_ext_device *edev,
886 			struct snd_soc_dapm_widget *widgets,
887 			struct snd_soc_dapm_route *route, int rindex)
888 {
889 	struct hdac_hdmi_priv *hdmi = edev->private_data;
890 	const struct snd_kcontrol_new *kc;
891 	struct soc_enum *se;
892 	int mux_index = hdmi->num_cvt + hdmi->num_pin;
893 	int i, j;
894 
895 	for (i = 0; i < hdmi->num_pin; i++) {
896 		kc = widgets[mux_index].kcontrol_news;
897 		se = (struct soc_enum *)kc->private_value;
898 		for (j = 0; j < hdmi->num_cvt; j++) {
899 			hdac_hdmi_fill_route(&route[rindex],
900 					widgets[mux_index].name,
901 					se->texts[j + 1],
902 					widgets[j].name, NULL);
903 
904 			rindex++;
905 		}
906 
907 		mux_index++;
908 	}
909 }
910 
911 /*
912  * Widgets are added in the below sequence
913  *	Converter widgets for num converters enumerated
914  *	Pin widgets for num pins enumerated
915  *	Pin mux widgets to represent connenction list of pin widget
916  *
917  * Total widgets elements = num_cvt + num_pin + num_pin;
918  *
919  * Routes are added as below:
920  *	pin mux -> pin (based on num_pins)
921  *	cvt -> "Input sel control" -> pin_mux
922  *
923  * Total route elements:
924  *	num_pins + (pin_muxes * num_cvt)
925  */
926 static int create_fill_widget_route_map(struct snd_soc_dapm_context *dapm)
927 {
928 	struct snd_soc_dapm_widget *widgets;
929 	struct snd_soc_dapm_route *route;
930 	struct hdac_ext_device *edev = to_hda_ext_device(dapm->dev);
931 	struct hdac_hdmi_priv *hdmi = edev->private_data;
932 	struct snd_soc_dai_driver *dai_drv = dapm->component->dai_drv;
933 	char widget_name[NAME_SIZE];
934 	struct hdac_hdmi_cvt *cvt;
935 	struct hdac_hdmi_pin *pin;
936 	int ret, i = 0, num_routes = 0;
937 
938 	if (list_empty(&hdmi->cvt_list) || list_empty(&hdmi->pin_list))
939 		return -EINVAL;
940 
941 	widgets = devm_kzalloc(dapm->dev,
942 		(sizeof(*widgets) * ((2 * hdmi->num_pin) + hdmi->num_cvt)),
943 		GFP_KERNEL);
944 
945 	if (!widgets)
946 		return -ENOMEM;
947 
948 	/* DAPM widgets to represent each converter widget */
949 	list_for_each_entry(cvt, &hdmi->cvt_list, head) {
950 		sprintf(widget_name, "Converter %d", cvt->nid);
951 		ret = hdac_hdmi_fill_widget_info(dapm->dev, &widgets[i],
952 			snd_soc_dapm_aif_in, &cvt->nid,
953 			widget_name, dai_drv[i].playback.stream_name, NULL, 0);
954 		if (ret < 0)
955 			return ret;
956 		i++;
957 	}
958 
959 	list_for_each_entry(pin, &hdmi->pin_list, head) {
960 		sprintf(widget_name, "hif%d Output", pin->nid);
961 		ret = hdac_hdmi_fill_widget_info(dapm->dev, &widgets[i],
962 				snd_soc_dapm_output, &pin->nid,
963 				widget_name, NULL, NULL, 0);
964 		if (ret < 0)
965 			return ret;
966 		i++;
967 	}
968 
969 	/* DAPM widgets to represent the connection list to pin widget */
970 	list_for_each_entry(pin, &hdmi->pin_list, head) {
971 		sprintf(widget_name, "Pin %d Mux", pin->nid);
972 		ret = hdac_hdmi_create_pin_muxs(edev, pin, &widgets[i],
973 							widget_name);
974 		if (ret < 0)
975 			return ret;
976 		i++;
977 
978 		/* For cvt to pin_mux mapping */
979 		num_routes += hdmi->num_cvt;
980 
981 		/* For pin_mux to pin mapping */
982 		num_routes++;
983 	}
984 
985 	route = devm_kzalloc(dapm->dev, (sizeof(*route) * num_routes),
986 							GFP_KERNEL);
987 	if (!route)
988 		return -ENOMEM;
989 
990 	i = 0;
991 	/* Add pin <- NULL <- mux route map */
992 	list_for_each_entry(pin, &hdmi->pin_list, head) {
993 		int sink_index = i + hdmi->num_cvt;
994 		int src_index = sink_index + hdmi->num_pin;
995 
996 		hdac_hdmi_fill_route(&route[i],
997 				widgets[sink_index].name, NULL,
998 				widgets[src_index].name, NULL);
999 		i++;
1000 
1001 	}
1002 
1003 	hdac_hdmi_add_pinmux_cvt_route(edev, widgets, route, i);
1004 
1005 	snd_soc_dapm_new_controls(dapm, widgets,
1006 		((2 * hdmi->num_pin) + hdmi->num_cvt));
1007 
1008 	snd_soc_dapm_add_routes(dapm, route, num_routes);
1009 	snd_soc_dapm_new_widgets(dapm->card);
1010 
1011 	return 0;
1012 
1013 }
1014 
1015 static int hdac_hdmi_init_dai_map(struct hdac_ext_device *edev)
1016 {
1017 	struct hdac_hdmi_priv *hdmi = edev->private_data;
1018 	struct hdac_hdmi_dai_pin_map *dai_map;
1019 	struct hdac_hdmi_cvt *cvt;
1020 	int dai_id = 0;
1021 
1022 	if (list_empty(&hdmi->cvt_list))
1023 		return -EINVAL;
1024 
1025 	list_for_each_entry(cvt, &hdmi->cvt_list, head) {
1026 		dai_map = &hdmi->dai_map[dai_id];
1027 		dai_map->dai_id = dai_id;
1028 		dai_map->cvt = cvt;
1029 
1030 		dai_id++;
1031 
1032 		if (dai_id == HDA_MAX_CVTS) {
1033 			dev_warn(&edev->hdac.dev,
1034 				"Max dais supported: %d\n", dai_id);
1035 			break;
1036 		}
1037 	}
1038 
1039 	return 0;
1040 }
1041 
1042 static int hdac_hdmi_add_cvt(struct hdac_ext_device *edev, hda_nid_t nid)
1043 {
1044 	struct hdac_hdmi_priv *hdmi = edev->private_data;
1045 	struct hdac_hdmi_cvt *cvt;
1046 	char name[NAME_SIZE];
1047 
1048 	cvt = kzalloc(sizeof(*cvt), GFP_KERNEL);
1049 	if (!cvt)
1050 		return -ENOMEM;
1051 
1052 	cvt->nid = nid;
1053 	sprintf(name, "cvt %d", cvt->nid);
1054 	cvt->name = kstrdup(name, GFP_KERNEL);
1055 
1056 	list_add_tail(&cvt->head, &hdmi->cvt_list);
1057 	hdmi->num_cvt++;
1058 
1059 	return hdac_hdmi_query_cvt_params(&edev->hdac, cvt);
1060 }
1061 
1062 static void hdac_hdmi_parse_eld(struct hdac_ext_device *edev,
1063 			struct hdac_hdmi_pin *pin)
1064 {
1065 	pin->eld.info.spk_alloc = pin->eld.eld_buffer[DRM_ELD_SPEAKER];
1066 }
1067 
1068 static void hdac_hdmi_present_sense(struct hdac_hdmi_pin *pin, int repoll)
1069 {
1070 	struct hdac_ext_device *edev = pin->edev;
1071 	struct hdac_hdmi_priv *hdmi = edev->private_data;
1072 	struct hdac_hdmi_pcm *pcm;
1073 	int val;
1074 
1075 	pin->repoll_count = repoll;
1076 
1077 	pm_runtime_get_sync(&edev->hdac.dev);
1078 	val = snd_hdac_codec_read(&edev->hdac, pin->nid, 0,
1079 					AC_VERB_GET_PIN_SENSE, 0);
1080 
1081 	dev_dbg(&edev->hdac.dev, "Pin sense val %x for pin: %d\n",
1082 						val, pin->nid);
1083 
1084 
1085 	mutex_lock(&hdmi->pin_mutex);
1086 	pin->eld.monitor_present = !!(val & AC_PINSENSE_PRESENCE);
1087 	pin->eld.eld_valid = !!(val & AC_PINSENSE_ELDV);
1088 
1089 	pcm = hdac_hdmi_get_pcm(edev, pin);
1090 
1091 	if (!pin->eld.monitor_present || !pin->eld.eld_valid) {
1092 
1093 		dev_dbg(&edev->hdac.dev, "%s: disconnect for pin %d\n",
1094 						__func__, pin->nid);
1095 
1096 		/*
1097 		 * PCMs are not registered during device probe, so don't
1098 		 * report jack here. It will be done in usermode mux
1099 		 * control select.
1100 		 */
1101 		if (pcm) {
1102 			dev_dbg(&edev->hdac.dev,
1103 				"jack report for pcm=%d\n", pcm->pcm_id);
1104 
1105 			snd_jack_report(pcm->jack, 0);
1106 		}
1107 
1108 		mutex_unlock(&hdmi->pin_mutex);
1109 		goto put_hdac_device;
1110 	}
1111 
1112 	if (pin->eld.monitor_present && pin->eld.eld_valid) {
1113 		/* TODO: use i915 component for reading ELD later */
1114 		if (hdac_hdmi_get_eld(&edev->hdac, pin->nid,
1115 				pin->eld.eld_buffer,
1116 				&pin->eld.eld_size) == 0) {
1117 
1118 			if (pcm) {
1119 				dev_dbg(&edev->hdac.dev,
1120 					"jack report for pcm=%d\n",
1121 					pcm->pcm_id);
1122 
1123 				snd_jack_report(pcm->jack, SND_JACK_AVOUT);
1124 			}
1125 			hdac_hdmi_parse_eld(edev, pin);
1126 
1127 			print_hex_dump_debug("ELD: ",
1128 					DUMP_PREFIX_OFFSET, 16, 1,
1129 					pin->eld.eld_buffer, pin->eld.eld_size,
1130 					true);
1131 		} else {
1132 			pin->eld.monitor_present = false;
1133 			pin->eld.eld_valid = false;
1134 
1135 			if (pcm) {
1136 				dev_dbg(&edev->hdac.dev,
1137 					"jack report for pcm=%d\n",
1138 					pcm->pcm_id);
1139 
1140 				snd_jack_report(pcm->jack, 0);
1141 			}
1142 		}
1143 	}
1144 
1145 	mutex_unlock(&hdmi->pin_mutex);
1146 
1147 	/*
1148 	 * Sometimes the pin_sense may present invalid monitor
1149 	 * present and eld_valid. If ELD data is not valid, loop few
1150 	 * more times to get correct pin sense and valid ELD.
1151 	 */
1152 	if ((!pin->eld.monitor_present || !pin->eld.eld_valid) && repoll)
1153 		schedule_delayed_work(&pin->work, msecs_to_jiffies(300));
1154 
1155 put_hdac_device:
1156 	pm_runtime_put_sync(&edev->hdac.dev);
1157 }
1158 
1159 static void hdac_hdmi_repoll_eld(struct work_struct *work)
1160 {
1161 	struct hdac_hdmi_pin *pin =
1162 		container_of(to_delayed_work(work), struct hdac_hdmi_pin, work);
1163 
1164 	/* picked from legacy HDA driver */
1165 	if (pin->repoll_count++ > 6)
1166 		pin->repoll_count = 0;
1167 
1168 	hdac_hdmi_present_sense(pin, pin->repoll_count);
1169 }
1170 
1171 static int hdac_hdmi_add_pin(struct hdac_ext_device *edev, hda_nid_t nid)
1172 {
1173 	struct hdac_hdmi_priv *hdmi = edev->private_data;
1174 	struct hdac_hdmi_pin *pin;
1175 
1176 	pin = kzalloc(sizeof(*pin), GFP_KERNEL);
1177 	if (!pin)
1178 		return -ENOMEM;
1179 
1180 	pin->nid = nid;
1181 
1182 	list_add_tail(&pin->head, &hdmi->pin_list);
1183 	hdmi->num_pin++;
1184 
1185 	pin->edev = edev;
1186 	mutex_init(&pin->lock);
1187 	INIT_DELAYED_WORK(&pin->work, hdac_hdmi_repoll_eld);
1188 
1189 	return 0;
1190 }
1191 
1192 #define INTEL_VENDOR_NID 0x08
1193 #define INTEL_GET_VENDOR_VERB 0xf81
1194 #define INTEL_SET_VENDOR_VERB 0x781
1195 #define INTEL_EN_DP12			0x02 /* enable DP 1.2 features */
1196 #define INTEL_EN_ALL_PIN_CVTS	0x01 /* enable 2nd & 3rd pins and convertors */
1197 
1198 static void hdac_hdmi_skl_enable_all_pins(struct hdac_device *hdac)
1199 {
1200 	unsigned int vendor_param;
1201 
1202 	vendor_param = snd_hdac_codec_read(hdac, INTEL_VENDOR_NID, 0,
1203 				INTEL_GET_VENDOR_VERB, 0);
1204 	if (vendor_param == -1 || vendor_param & INTEL_EN_ALL_PIN_CVTS)
1205 		return;
1206 
1207 	vendor_param |= INTEL_EN_ALL_PIN_CVTS;
1208 	vendor_param = snd_hdac_codec_read(hdac, INTEL_VENDOR_NID, 0,
1209 				INTEL_SET_VENDOR_VERB, vendor_param);
1210 	if (vendor_param == -1)
1211 		return;
1212 }
1213 
1214 static void hdac_hdmi_skl_enable_dp12(struct hdac_device *hdac)
1215 {
1216 	unsigned int vendor_param;
1217 
1218 	vendor_param = snd_hdac_codec_read(hdac, INTEL_VENDOR_NID, 0,
1219 				INTEL_GET_VENDOR_VERB, 0);
1220 	if (vendor_param == -1 || vendor_param & INTEL_EN_DP12)
1221 		return;
1222 
1223 	/* enable DP1.2 mode */
1224 	vendor_param |= INTEL_EN_DP12;
1225 	vendor_param = snd_hdac_codec_read(hdac, INTEL_VENDOR_NID, 0,
1226 				INTEL_SET_VENDOR_VERB, vendor_param);
1227 	if (vendor_param == -1)
1228 		return;
1229 
1230 }
1231 
1232 static struct snd_soc_dai_ops hdmi_dai_ops = {
1233 	.startup = hdac_hdmi_pcm_open,
1234 	.shutdown = hdac_hdmi_pcm_close,
1235 	.hw_params = hdac_hdmi_set_hw_params,
1236 	.prepare = hdac_hdmi_playback_prepare,
1237 	.trigger = hdac_hdmi_trigger,
1238 	.hw_free = hdac_hdmi_playback_cleanup,
1239 };
1240 
1241 /*
1242  * Each converter can support a stream independently. So a dai is created
1243  * based on the number of converter queried.
1244  */
1245 static int hdac_hdmi_create_dais(struct hdac_device *hdac,
1246 		struct snd_soc_dai_driver **dais,
1247 		struct hdac_hdmi_priv *hdmi, int num_dais)
1248 {
1249 	struct snd_soc_dai_driver *hdmi_dais;
1250 	struct hdac_hdmi_cvt *cvt;
1251 	char name[NAME_SIZE], dai_name[NAME_SIZE];
1252 	int i = 0;
1253 	u32 rates, bps;
1254 	unsigned int rate_max = 384000, rate_min = 8000;
1255 	u64 formats;
1256 	int ret;
1257 
1258 	hdmi_dais = devm_kzalloc(&hdac->dev,
1259 			(sizeof(*hdmi_dais) * num_dais),
1260 			GFP_KERNEL);
1261 	if (!hdmi_dais)
1262 		return -ENOMEM;
1263 
1264 	list_for_each_entry(cvt, &hdmi->cvt_list, head) {
1265 		ret = snd_hdac_query_supported_pcm(hdac, cvt->nid,
1266 					&rates,	&formats, &bps);
1267 		if (ret)
1268 			return ret;
1269 
1270 		sprintf(dai_name, "intel-hdmi-hifi%d", i+1);
1271 		hdmi_dais[i].name = devm_kstrdup(&hdac->dev,
1272 					dai_name, GFP_KERNEL);
1273 
1274 		if (!hdmi_dais[i].name)
1275 			return -ENOMEM;
1276 
1277 		snprintf(name, sizeof(name), "hifi%d", i+1);
1278 		hdmi_dais[i].playback.stream_name =
1279 				devm_kstrdup(&hdac->dev, name, GFP_KERNEL);
1280 		if (!hdmi_dais[i].playback.stream_name)
1281 			return -ENOMEM;
1282 
1283 		/*
1284 		 * Set caps based on capability queried from the converter.
1285 		 * It will be constrained runtime based on ELD queried.
1286 		 */
1287 		hdmi_dais[i].playback.formats = formats;
1288 		hdmi_dais[i].playback.rates = rates;
1289 		hdmi_dais[i].playback.rate_max = rate_max;
1290 		hdmi_dais[i].playback.rate_min = rate_min;
1291 		hdmi_dais[i].playback.channels_min = 2;
1292 		hdmi_dais[i].playback.channels_max = 2;
1293 		hdmi_dais[i].ops = &hdmi_dai_ops;
1294 
1295 		i++;
1296 	}
1297 
1298 	*dais = hdmi_dais;
1299 
1300 	return 0;
1301 }
1302 
1303 /*
1304  * Parse all nodes and store the cvt/pin nids in array
1305  * Add one time initialization for pin and cvt widgets
1306  */
1307 static int hdac_hdmi_parse_and_map_nid(struct hdac_ext_device *edev,
1308 		struct snd_soc_dai_driver **dais, int *num_dais)
1309 {
1310 	hda_nid_t nid;
1311 	int i, num_nodes;
1312 	struct hdac_device *hdac = &edev->hdac;
1313 	struct hdac_hdmi_priv *hdmi = edev->private_data;
1314 	int ret;
1315 
1316 	hdac_hdmi_skl_enable_all_pins(hdac);
1317 	hdac_hdmi_skl_enable_dp12(hdac);
1318 
1319 	num_nodes = snd_hdac_get_sub_nodes(hdac, hdac->afg, &nid);
1320 	if (!nid || num_nodes <= 0) {
1321 		dev_warn(&hdac->dev, "HDMI: failed to get afg sub nodes\n");
1322 		return -EINVAL;
1323 	}
1324 
1325 	hdac->num_nodes = num_nodes;
1326 	hdac->start_nid = nid;
1327 
1328 	for (i = 0; i < hdac->num_nodes; i++, nid++) {
1329 		unsigned int caps;
1330 		unsigned int type;
1331 
1332 		caps = get_wcaps(hdac, nid);
1333 		type = get_wcaps_type(caps);
1334 
1335 		if (!(caps & AC_WCAP_DIGITAL))
1336 			continue;
1337 
1338 		switch (type) {
1339 
1340 		case AC_WID_AUD_OUT:
1341 			ret = hdac_hdmi_add_cvt(edev, nid);
1342 			if (ret < 0)
1343 				return ret;
1344 			break;
1345 
1346 		case AC_WID_PIN:
1347 			ret = hdac_hdmi_add_pin(edev, nid);
1348 			if (ret < 0)
1349 				return ret;
1350 			break;
1351 		}
1352 	}
1353 
1354 	hdac->end_nid = nid;
1355 
1356 	if (!hdmi->num_pin || !hdmi->num_cvt)
1357 		return -EIO;
1358 
1359 	ret = hdac_hdmi_create_dais(hdac, dais, hdmi, hdmi->num_cvt);
1360 	if (ret) {
1361 		dev_err(&hdac->dev, "Failed to create dais with err: %d\n",
1362 							ret);
1363 		return ret;
1364 	}
1365 
1366 	*num_dais = hdmi->num_cvt;
1367 
1368 	return hdac_hdmi_init_dai_map(edev);
1369 }
1370 
1371 static void hdac_hdmi_eld_notify_cb(void *aptr, int port)
1372 {
1373 	struct hdac_ext_device *edev = aptr;
1374 	struct hdac_hdmi_priv *hdmi = edev->private_data;
1375 	struct hdac_hdmi_pin *pin;
1376 	struct snd_soc_codec *codec = edev->scodec;
1377 
1378 	/* Don't know how this mapping is derived */
1379 	hda_nid_t pin_nid = port + 0x04;
1380 
1381 	dev_dbg(&edev->hdac.dev, "%s: for pin: %d\n", __func__, pin_nid);
1382 
1383 	/*
1384 	 * skip notification during system suspend (but not in runtime PM);
1385 	 * the state will be updated at resume. Also since the ELD and
1386 	 * connection states are updated in anyway at the end of the resume,
1387 	 * we can skip it when received during PM process.
1388 	 */
1389 	if (snd_power_get_state(codec->component.card->snd_card) !=
1390 			SNDRV_CTL_POWER_D0)
1391 		return;
1392 
1393 	if (atomic_read(&edev->hdac.in_pm))
1394 		return;
1395 
1396 	list_for_each_entry(pin, &hdmi->pin_list, head) {
1397 		if (pin->nid == pin_nid)
1398 			hdac_hdmi_present_sense(pin, 1);
1399 	}
1400 }
1401 
1402 static struct i915_audio_component_audio_ops aops = {
1403 	.pin_eld_notify	= hdac_hdmi_eld_notify_cb,
1404 };
1405 
1406 static struct snd_pcm *hdac_hdmi_get_pcm_from_id(struct snd_soc_card *card,
1407 						int device)
1408 {
1409 	struct snd_soc_pcm_runtime *rtd;
1410 
1411 	list_for_each_entry(rtd, &card->rtd_list, list) {
1412 		if (rtd->pcm && (rtd->pcm->device == device))
1413 			return rtd->pcm;
1414 	}
1415 
1416 	return NULL;
1417 }
1418 
1419 int hdac_hdmi_jack_init(struct snd_soc_dai *dai, int device)
1420 {
1421 	char jack_name[NAME_SIZE];
1422 	struct snd_soc_codec *codec = dai->codec;
1423 	struct hdac_ext_device *edev = snd_soc_codec_get_drvdata(codec);
1424 	struct snd_soc_dapm_context *dapm =
1425 		snd_soc_component_get_dapm(&codec->component);
1426 	struct hdac_hdmi_priv *hdmi = edev->private_data;
1427 	struct hdac_hdmi_pcm *pcm;
1428 	struct snd_pcm *snd_pcm;
1429 	int err;
1430 
1431 	/*
1432 	 * this is a new PCM device, create new pcm and
1433 	 * add to the pcm list
1434 	 */
1435 	pcm = kzalloc(sizeof(*pcm), GFP_KERNEL);
1436 	if (!pcm)
1437 		return -ENOMEM;
1438 	pcm->pcm_id = device;
1439 	pcm->cvt = hdmi->dai_map[dai->id].cvt;
1440 
1441 	snd_pcm = hdac_hdmi_get_pcm_from_id(dai->component->card, device);
1442 	if (snd_pcm) {
1443 		err = snd_hdac_add_chmap_ctls(snd_pcm, device, &hdmi->chmap);
1444 		if (err < 0) {
1445 			dev_err(&edev->hdac.dev,
1446 				"chmap control add failed with err: %d for pcm: %d\n",
1447 				err, device);
1448 			kfree(pcm);
1449 			return err;
1450 		}
1451 	}
1452 
1453 	list_add_tail(&pcm->head, &hdmi->pcm_list);
1454 
1455 	sprintf(jack_name, "HDMI/DP, pcm=%d Jack", device);
1456 
1457 	return snd_jack_new(dapm->card->snd_card, jack_name,
1458 		SND_JACK_AVOUT,	&pcm->jack, true, false);
1459 }
1460 EXPORT_SYMBOL_GPL(hdac_hdmi_jack_init);
1461 
1462 static int hdmi_codec_probe(struct snd_soc_codec *codec)
1463 {
1464 	struct hdac_ext_device *edev = snd_soc_codec_get_drvdata(codec);
1465 	struct hdac_hdmi_priv *hdmi = edev->private_data;
1466 	struct snd_soc_dapm_context *dapm =
1467 		snd_soc_component_get_dapm(&codec->component);
1468 	struct hdac_hdmi_pin *pin;
1469 	struct hdac_ext_link *hlink = NULL;
1470 	int ret;
1471 
1472 	edev->scodec = codec;
1473 
1474 	/*
1475 	 * hold the ref while we probe, also no need to drop the ref on
1476 	 * exit, we call pm_runtime_suspend() so that will do for us
1477 	 */
1478 	hlink = snd_hdac_ext_bus_get_link(edev->ebus, dev_name(&edev->hdac.dev));
1479 	if (!hlink) {
1480 		dev_err(&edev->hdac.dev, "hdac link not found\n");
1481 		return -EIO;
1482 	}
1483 
1484 	snd_hdac_ext_bus_link_get(edev->ebus, hlink);
1485 
1486 	ret = create_fill_widget_route_map(dapm);
1487 	if (ret < 0)
1488 		return ret;
1489 
1490 	aops.audio_ptr = edev;
1491 	ret = snd_hdac_i915_register_notifier(&aops);
1492 	if (ret < 0) {
1493 		dev_err(&edev->hdac.dev, "notifier register failed: err: %d\n",
1494 				ret);
1495 		return ret;
1496 	}
1497 
1498 	list_for_each_entry(pin, &hdmi->pin_list, head)
1499 		hdac_hdmi_present_sense(pin, 1);
1500 
1501 	/* Imp: Store the card pointer in hda_codec */
1502 	edev->card = dapm->card->snd_card;
1503 
1504 	/*
1505 	 * hdac_device core already sets the state to active and calls
1506 	 * get_noresume. So enable runtime and set the device to suspend.
1507 	 */
1508 	pm_runtime_enable(&edev->hdac.dev);
1509 	pm_runtime_put(&edev->hdac.dev);
1510 	pm_runtime_suspend(&edev->hdac.dev);
1511 
1512 	return 0;
1513 }
1514 
1515 static int hdmi_codec_remove(struct snd_soc_codec *codec)
1516 {
1517 	struct hdac_ext_device *edev = snd_soc_codec_get_drvdata(codec);
1518 
1519 	pm_runtime_disable(&edev->hdac.dev);
1520 	return 0;
1521 }
1522 
1523 #ifdef CONFIG_PM
1524 static int hdmi_codec_prepare(struct device *dev)
1525 {
1526 	struct hdac_ext_device *edev = to_hda_ext_device(dev);
1527 	struct hdac_device *hdac = &edev->hdac;
1528 
1529 	pm_runtime_get_sync(&edev->hdac.dev);
1530 
1531 	/*
1532 	 * Power down afg.
1533 	 * codec_read is preferred over codec_write to set the power state.
1534 	 * This way verb is send to set the power state and response
1535 	 * is received. So setting power state is ensured without using loop
1536 	 * to read the state.
1537 	 */
1538 	snd_hdac_codec_read(hdac, hdac->afg, 0,	AC_VERB_SET_POWER_STATE,
1539 							AC_PWRST_D3);
1540 
1541 	return 0;
1542 }
1543 
1544 static void hdmi_codec_complete(struct device *dev)
1545 {
1546 	struct hdac_ext_device *edev = to_hda_ext_device(dev);
1547 	struct hdac_hdmi_priv *hdmi = edev->private_data;
1548 	struct hdac_hdmi_pin *pin;
1549 	struct hdac_device *hdac = &edev->hdac;
1550 
1551 	/* Power up afg */
1552 	snd_hdac_codec_read(hdac, hdac->afg, 0,	AC_VERB_SET_POWER_STATE,
1553 							AC_PWRST_D0);
1554 
1555 	hdac_hdmi_skl_enable_all_pins(&edev->hdac);
1556 	hdac_hdmi_skl_enable_dp12(&edev->hdac);
1557 
1558 	/*
1559 	 * As the ELD notify callback request is not entertained while the
1560 	 * device is in suspend state. Need to manually check detection of
1561 	 * all pins here.
1562 	 */
1563 	list_for_each_entry(pin, &hdmi->pin_list, head)
1564 		hdac_hdmi_present_sense(pin, 1);
1565 
1566 	pm_runtime_put_sync(&edev->hdac.dev);
1567 }
1568 #else
1569 #define hdmi_codec_prepare NULL
1570 #define hdmi_codec_complete NULL
1571 #endif
1572 
1573 static struct snd_soc_codec_driver hdmi_hda_codec = {
1574 	.probe		= hdmi_codec_probe,
1575 	.remove		= hdmi_codec_remove,
1576 	.idle_bias_off	= true,
1577 };
1578 
1579 static void hdac_hdmi_get_chmap(struct hdac_device *hdac, int pcm_idx,
1580 					unsigned char *chmap)
1581 {
1582 	struct hdac_ext_device *edev = to_ehdac_device(hdac);
1583 	struct hdac_hdmi_priv *hdmi = edev->private_data;
1584 	struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx);
1585 	struct hdac_hdmi_pin *pin = pcm->pin;
1586 
1587 	/* chmap is already set to 0 in caller */
1588 	if (!pin)
1589 		return;
1590 
1591 	memcpy(chmap, pin->chmap, ARRAY_SIZE(pin->chmap));
1592 }
1593 
1594 static void hdac_hdmi_set_chmap(struct hdac_device *hdac, int pcm_idx,
1595 				unsigned char *chmap, int prepared)
1596 {
1597 	struct hdac_ext_device *edev = to_ehdac_device(hdac);
1598 	struct hdac_hdmi_priv *hdmi = edev->private_data;
1599 	struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx);
1600 	struct hdac_hdmi_pin *pin = pcm->pin;
1601 
1602 	mutex_lock(&pin->lock);
1603 	pin->chmap_set = true;
1604 	memcpy(pin->chmap, chmap, ARRAY_SIZE(pin->chmap));
1605 	if (prepared)
1606 		hdac_hdmi_setup_audio_infoframe(edev, pcm->cvt->nid, pin->nid);
1607 	mutex_unlock(&pin->lock);
1608 }
1609 
1610 static bool is_hdac_hdmi_pcm_attached(struct hdac_device *hdac, int pcm_idx)
1611 {
1612 	struct hdac_ext_device *edev = to_ehdac_device(hdac);
1613 	struct hdac_hdmi_priv *hdmi = edev->private_data;
1614 	struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx);
1615 	struct hdac_hdmi_pin *pin = pcm->pin;
1616 
1617 	return pin ? true:false;
1618 }
1619 
1620 static int hdac_hdmi_get_spk_alloc(struct hdac_device *hdac, int pcm_idx)
1621 {
1622 	struct hdac_ext_device *edev = to_ehdac_device(hdac);
1623 	struct hdac_hdmi_priv *hdmi = edev->private_data;
1624 	struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx);
1625 	struct hdac_hdmi_pin *pin = pcm->pin;
1626 
1627 	if (!pin || !pin->eld.eld_valid)
1628 		return 0;
1629 
1630 	return pin->eld.info.spk_alloc;
1631 }
1632 
1633 static int hdac_hdmi_dev_probe(struct hdac_ext_device *edev)
1634 {
1635 	struct hdac_device *codec = &edev->hdac;
1636 	struct hdac_hdmi_priv *hdmi_priv;
1637 	struct snd_soc_dai_driver *hdmi_dais = NULL;
1638 	struct hdac_ext_link *hlink = NULL;
1639 	int num_dais = 0;
1640 	int ret = 0;
1641 
1642 	/* hold the ref while we probe */
1643 	hlink = snd_hdac_ext_bus_get_link(edev->ebus, dev_name(&edev->hdac.dev));
1644 	if (!hlink) {
1645 		dev_err(&edev->hdac.dev, "hdac link not found\n");
1646 		return -EIO;
1647 	}
1648 
1649 	snd_hdac_ext_bus_link_get(edev->ebus, hlink);
1650 
1651 	hdmi_priv = devm_kzalloc(&codec->dev, sizeof(*hdmi_priv), GFP_KERNEL);
1652 	if (hdmi_priv == NULL)
1653 		return -ENOMEM;
1654 
1655 	edev->private_data = hdmi_priv;
1656 	snd_hdac_register_chmap_ops(codec, &hdmi_priv->chmap);
1657 	hdmi_priv->chmap.ops.get_chmap = hdac_hdmi_get_chmap;
1658 	hdmi_priv->chmap.ops.set_chmap = hdac_hdmi_set_chmap;
1659 	hdmi_priv->chmap.ops.is_pcm_attached = is_hdac_hdmi_pcm_attached;
1660 	hdmi_priv->chmap.ops.get_spk_alloc = hdac_hdmi_get_spk_alloc;
1661 
1662 	dev_set_drvdata(&codec->dev, edev);
1663 
1664 	INIT_LIST_HEAD(&hdmi_priv->pin_list);
1665 	INIT_LIST_HEAD(&hdmi_priv->cvt_list);
1666 	INIT_LIST_HEAD(&hdmi_priv->pcm_list);
1667 	mutex_init(&hdmi_priv->pin_mutex);
1668 
1669 	/*
1670 	 * Turned off in the runtime_suspend during the first explicit
1671 	 * pm_runtime_suspend call.
1672 	 */
1673 	ret = snd_hdac_display_power(edev->hdac.bus, true);
1674 	if (ret < 0) {
1675 		dev_err(&edev->hdac.dev,
1676 			"Cannot turn on display power on i915 err: %d\n",
1677 			ret);
1678 		return ret;
1679 	}
1680 
1681 	ret = hdac_hdmi_parse_and_map_nid(edev, &hdmi_dais, &num_dais);
1682 	if (ret < 0) {
1683 		dev_err(&codec->dev,
1684 			"Failed in parse and map nid with err: %d\n", ret);
1685 		return ret;
1686 	}
1687 
1688 	/* ASoC specific initialization */
1689 	ret = snd_soc_register_codec(&codec->dev, &hdmi_hda_codec,
1690 					hdmi_dais, num_dais);
1691 
1692 	snd_hdac_ext_bus_link_put(edev->ebus, hlink);
1693 
1694 	return ret;
1695 }
1696 
1697 static int hdac_hdmi_dev_remove(struct hdac_ext_device *edev)
1698 {
1699 	struct hdac_hdmi_priv *hdmi = edev->private_data;
1700 	struct hdac_hdmi_pin *pin, *pin_next;
1701 	struct hdac_hdmi_cvt *cvt, *cvt_next;
1702 	struct hdac_hdmi_pcm *pcm, *pcm_next;
1703 
1704 	snd_soc_unregister_codec(&edev->hdac.dev);
1705 
1706 	list_for_each_entry_safe(pcm, pcm_next, &hdmi->pcm_list, head) {
1707 		pcm->cvt = NULL;
1708 		pcm->pin = NULL;
1709 		list_del(&pcm->head);
1710 		kfree(pcm);
1711 	}
1712 
1713 	list_for_each_entry_safe(cvt, cvt_next, &hdmi->cvt_list, head) {
1714 		list_del(&cvt->head);
1715 		kfree(cvt->name);
1716 		kfree(cvt);
1717 	}
1718 
1719 	list_for_each_entry_safe(pin, pin_next, &hdmi->pin_list, head) {
1720 		list_del(&pin->head);
1721 		kfree(pin);
1722 	}
1723 
1724 	return 0;
1725 }
1726 
1727 #ifdef CONFIG_PM
1728 static int hdac_hdmi_runtime_suspend(struct device *dev)
1729 {
1730 	struct hdac_ext_device *edev = to_hda_ext_device(dev);
1731 	struct hdac_device *hdac = &edev->hdac;
1732 	struct hdac_bus *bus = hdac->bus;
1733 	struct hdac_ext_bus *ebus = hbus_to_ebus(bus);
1734 	struct hdac_ext_link *hlink = NULL;
1735 	int err;
1736 
1737 	dev_dbg(dev, "Enter: %s\n", __func__);
1738 
1739 	/* controller may not have been initialized for the first time */
1740 	if (!bus)
1741 		return 0;
1742 
1743 	/*
1744 	 * Power down afg.
1745 	 * codec_read is preferred over codec_write to set the power state.
1746 	 * This way verb is send to set the power state and response
1747 	 * is received. So setting power state is ensured without using loop
1748 	 * to read the state.
1749 	 */
1750 	snd_hdac_codec_read(hdac, hdac->afg, 0,	AC_VERB_SET_POWER_STATE,
1751 							AC_PWRST_D3);
1752 	err = snd_hdac_display_power(bus, false);
1753 	if (err < 0) {
1754 		dev_err(bus->dev, "Cannot turn on display power on i915\n");
1755 		return err;
1756 	}
1757 
1758 	hlink = snd_hdac_ext_bus_get_link(ebus, dev_name(dev));
1759 	if (!hlink) {
1760 		dev_err(dev, "hdac link not found\n");
1761 		return -EIO;
1762 	}
1763 
1764 	snd_hdac_ext_bus_link_put(ebus, hlink);
1765 
1766 	return 0;
1767 }
1768 
1769 static int hdac_hdmi_runtime_resume(struct device *dev)
1770 {
1771 	struct hdac_ext_device *edev = to_hda_ext_device(dev);
1772 	struct hdac_device *hdac = &edev->hdac;
1773 	struct hdac_bus *bus = hdac->bus;
1774 	struct hdac_ext_bus *ebus = hbus_to_ebus(bus);
1775 	struct hdac_ext_link *hlink = NULL;
1776 	int err;
1777 
1778 	dev_dbg(dev, "Enter: %s\n", __func__);
1779 
1780 	/* controller may not have been initialized for the first time */
1781 	if (!bus)
1782 		return 0;
1783 
1784 	hlink = snd_hdac_ext_bus_get_link(ebus, dev_name(dev));
1785 	if (!hlink) {
1786 		dev_err(dev, "hdac link not found\n");
1787 		return -EIO;
1788 	}
1789 
1790 	snd_hdac_ext_bus_link_get(ebus, hlink);
1791 
1792 	err = snd_hdac_display_power(bus, true);
1793 	if (err < 0) {
1794 		dev_err(bus->dev, "Cannot turn on display power on i915\n");
1795 		return err;
1796 	}
1797 
1798 	hdac_hdmi_skl_enable_all_pins(&edev->hdac);
1799 	hdac_hdmi_skl_enable_dp12(&edev->hdac);
1800 
1801 	/* Power up afg */
1802 	snd_hdac_codec_read(hdac, hdac->afg, 0,	AC_VERB_SET_POWER_STATE,
1803 							AC_PWRST_D0);
1804 
1805 	return 0;
1806 }
1807 #else
1808 #define hdac_hdmi_runtime_suspend NULL
1809 #define hdac_hdmi_runtime_resume NULL
1810 #endif
1811 
1812 static const struct dev_pm_ops hdac_hdmi_pm = {
1813 	SET_RUNTIME_PM_OPS(hdac_hdmi_runtime_suspend, hdac_hdmi_runtime_resume, NULL)
1814 	.prepare = hdmi_codec_prepare,
1815 	.complete = hdmi_codec_complete,
1816 };
1817 
1818 static const struct hda_device_id hdmi_list[] = {
1819 	HDA_CODEC_EXT_ENTRY(0x80862809, 0x100000, "Skylake HDMI", 0),
1820 	HDA_CODEC_EXT_ENTRY(0x8086280a, 0x100000, "Broxton HDMI", 0),
1821 	HDA_CODEC_EXT_ENTRY(0x8086280b, 0x100000, "Kabylake HDMI", 0),
1822 	{}
1823 };
1824 
1825 MODULE_DEVICE_TABLE(hdaudio, hdmi_list);
1826 
1827 static struct hdac_ext_driver hdmi_driver = {
1828 	. hdac = {
1829 		.driver = {
1830 			.name   = "HDMI HDA Codec",
1831 			.pm = &hdac_hdmi_pm,
1832 		},
1833 		.id_table       = hdmi_list,
1834 	},
1835 	.probe          = hdac_hdmi_dev_probe,
1836 	.remove         = hdac_hdmi_dev_remove,
1837 };
1838 
1839 static int __init hdmi_init(void)
1840 {
1841 	return snd_hda_ext_driver_register(&hdmi_driver);
1842 }
1843 
1844 static void __exit hdmi_exit(void)
1845 {
1846 	snd_hda_ext_driver_unregister(&hdmi_driver);
1847 }
1848 
1849 module_init(hdmi_init);
1850 module_exit(hdmi_exit);
1851 
1852 MODULE_LICENSE("GPL v2");
1853 MODULE_DESCRIPTION("HDMI HD codec");
1854 MODULE_AUTHOR("Samreen Nilofer<samreen.nilofer@intel.com>");
1855 MODULE_AUTHOR("Subhransu S. Prusty<subhransu.s.prusty@intel.com>");
1856