xref: /openbmc/linux/sound/pci/hda/patch_hdmi.c (revision 4da722ca)
1 /*
2  *
3  *  patch_hdmi.c - routines for HDMI/DisplayPort codecs
4  *
5  *  Copyright(c) 2008-2010 Intel Corporation. All rights reserved.
6  *  Copyright (c) 2006 ATI Technologies Inc.
7  *  Copyright (c) 2008 NVIDIA Corp.  All rights reserved.
8  *  Copyright (c) 2008 Wei Ni <wni@nvidia.com>
9  *  Copyright (c) 2013 Anssi Hannula <anssi.hannula@iki.fi>
10  *
11  *  Authors:
12  *			Wu Fengguang <wfg@linux.intel.com>
13  *
14  *  Maintained by:
15  *			Wu Fengguang <wfg@linux.intel.com>
16  *
17  *  This program is free software; you can redistribute it and/or modify it
18  *  under the terms of the GNU General Public License as published by the Free
19  *  Software Foundation; either version 2 of the License, or (at your option)
20  *  any later version.
21  *
22  *  This program is distributed in the hope that it will be useful, but
23  *  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
24  *  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
25  *  for more details.
26  *
27  *  You should have received a copy of the GNU General Public License
28  *  along with this program; if not, write to the Free Software Foundation,
29  *  Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
30  */
31 
32 #include <linux/init.h>
33 #include <linux/delay.h>
34 #include <linux/slab.h>
35 #include <linux/module.h>
36 #include <sound/core.h>
37 #include <sound/jack.h>
38 #include <sound/asoundef.h>
39 #include <sound/tlv.h>
40 #include <sound/hdaudio.h>
41 #include <sound/hda_i915.h>
42 #include <sound/hda_chmap.h>
43 #include "hda_codec.h"
44 #include "hda_local.h"
45 #include "hda_jack.h"
46 
47 static bool static_hdmi_pcm;
48 module_param(static_hdmi_pcm, bool, 0644);
49 MODULE_PARM_DESC(static_hdmi_pcm, "Don't restrict PCM parameters per ELD info");
50 
51 #define is_haswell(codec)  ((codec)->core.vendor_id == 0x80862807)
52 #define is_broadwell(codec)    ((codec)->core.vendor_id == 0x80862808)
53 #define is_skylake(codec) ((codec)->core.vendor_id == 0x80862809)
54 #define is_broxton(codec) ((codec)->core.vendor_id == 0x8086280a)
55 #define is_kabylake(codec) ((codec)->core.vendor_id == 0x8086280b)
56 #define is_geminilake(codec) (((codec)->core.vendor_id == 0x8086280d) || \
57 				((codec)->core.vendor_id == 0x80862800))
58 #define is_haswell_plus(codec) (is_haswell(codec) || is_broadwell(codec) \
59 				|| is_skylake(codec) || is_broxton(codec) \
60 				|| is_kabylake(codec)) || is_geminilake(codec)
61 
62 #define is_valleyview(codec) ((codec)->core.vendor_id == 0x80862882)
63 #define is_cherryview(codec) ((codec)->core.vendor_id == 0x80862883)
64 #define is_valleyview_plus(codec) (is_valleyview(codec) || is_cherryview(codec))
65 
66 struct hdmi_spec_per_cvt {
67 	hda_nid_t cvt_nid;
68 	int assigned;
69 	unsigned int channels_min;
70 	unsigned int channels_max;
71 	u32 rates;
72 	u64 formats;
73 	unsigned int maxbps;
74 };
75 
76 /* max. connections to a widget */
77 #define HDA_MAX_CONNECTIONS	32
78 
79 struct hdmi_spec_per_pin {
80 	hda_nid_t pin_nid;
81 	int dev_id;
82 	/* pin idx, different device entries on the same pin use the same idx */
83 	int pin_nid_idx;
84 	int num_mux_nids;
85 	hda_nid_t mux_nids[HDA_MAX_CONNECTIONS];
86 	int mux_idx;
87 	hda_nid_t cvt_nid;
88 
89 	struct hda_codec *codec;
90 	struct hdmi_eld sink_eld;
91 	struct mutex lock;
92 	struct delayed_work work;
93 	struct hdmi_pcm *pcm; /* pointer to spec->pcm_rec[n] dynamically*/
94 	int pcm_idx; /* which pcm is attached. -1 means no pcm is attached */
95 	int repoll_count;
96 	bool setup; /* the stream has been set up by prepare callback */
97 	int channels; /* current number of channels */
98 	bool non_pcm;
99 	bool chmap_set;		/* channel-map override by ALSA API? */
100 	unsigned char chmap[8]; /* ALSA API channel-map */
101 #ifdef CONFIG_SND_PROC_FS
102 	struct snd_info_entry *proc_entry;
103 #endif
104 };
105 
106 /* operations used by generic code that can be overridden by patches */
107 struct hdmi_ops {
108 	int (*pin_get_eld)(struct hda_codec *codec, hda_nid_t pin_nid,
109 			   unsigned char *buf, int *eld_size);
110 
111 	void (*pin_setup_infoframe)(struct hda_codec *codec, hda_nid_t pin_nid,
112 				    int ca, int active_channels, int conn_type);
113 
114 	/* enable/disable HBR (HD passthrough) */
115 	int (*pin_hbr_setup)(struct hda_codec *codec, hda_nid_t pin_nid, bool hbr);
116 
117 	int (*setup_stream)(struct hda_codec *codec, hda_nid_t cvt_nid,
118 			    hda_nid_t pin_nid, u32 stream_tag, int format);
119 
120 	void (*pin_cvt_fixup)(struct hda_codec *codec,
121 			      struct hdmi_spec_per_pin *per_pin,
122 			      hda_nid_t cvt_nid);
123 };
124 
125 struct hdmi_pcm {
126 	struct hda_pcm *pcm;
127 	struct snd_jack *jack;
128 	struct snd_kcontrol *eld_ctl;
129 };
130 
131 struct hdmi_spec {
132 	int num_cvts;
133 	struct snd_array cvts; /* struct hdmi_spec_per_cvt */
134 	hda_nid_t cvt_nids[4]; /* only for haswell fix */
135 
136 	/*
137 	 * num_pins is the number of virtual pins
138 	 * for example, there are 3 pins, and each pin
139 	 * has 4 device entries, then the num_pins is 12
140 	 */
141 	int num_pins;
142 	/*
143 	 * num_nids is the number of real pins
144 	 * In the above example, num_nids is 3
145 	 */
146 	int num_nids;
147 	/*
148 	 * dev_num is the number of device entries
149 	 * on each pin.
150 	 * In the above example, dev_num is 4
151 	 */
152 	int dev_num;
153 	struct snd_array pins; /* struct hdmi_spec_per_pin */
154 	struct hdmi_pcm pcm_rec[16];
155 	struct mutex pcm_lock;
156 	/* pcm_bitmap means which pcms have been assigned to pins*/
157 	unsigned long pcm_bitmap;
158 	int pcm_used;	/* counter of pcm_rec[] */
159 	/* bitmap shows whether the pcm is opened in user space
160 	 * bit 0 means the first playback PCM (PCM3);
161 	 * bit 1 means the second playback PCM, and so on.
162 	 */
163 	unsigned long pcm_in_use;
164 
165 	struct hdmi_eld temp_eld;
166 	struct hdmi_ops ops;
167 
168 	bool dyn_pin_out;
169 	bool dyn_pcm_assign;
170 	/*
171 	 * Non-generic VIA/NVIDIA specific
172 	 */
173 	struct hda_multi_out multiout;
174 	struct hda_pcm_stream pcm_playback;
175 
176 	/* i915/powerwell (Haswell+/Valleyview+) specific */
177 	bool use_acomp_notifier; /* use i915 eld_notify callback for hotplug */
178 	struct i915_audio_component_audio_ops i915_audio_ops;
179 
180 	struct hdac_chmap chmap;
181 	hda_nid_t vendor_nid;
182 };
183 
184 #ifdef CONFIG_SND_HDA_I915
185 static inline bool codec_has_acomp(struct hda_codec *codec)
186 {
187 	struct hdmi_spec *spec = codec->spec;
188 	return spec->use_acomp_notifier;
189 }
190 #else
191 #define codec_has_acomp(codec)	false
192 #endif
193 
194 struct hdmi_audio_infoframe {
195 	u8 type; /* 0x84 */
196 	u8 ver;  /* 0x01 */
197 	u8 len;  /* 0x0a */
198 
199 	u8 checksum;
200 
201 	u8 CC02_CT47;	/* CC in bits 0:2, CT in 4:7 */
202 	u8 SS01_SF24;
203 	u8 CXT04;
204 	u8 CA;
205 	u8 LFEPBL01_LSV36_DM_INH7;
206 };
207 
208 struct dp_audio_infoframe {
209 	u8 type; /* 0x84 */
210 	u8 len;  /* 0x1b */
211 	u8 ver;  /* 0x11 << 2 */
212 
213 	u8 CC02_CT47;	/* match with HDMI infoframe from this on */
214 	u8 SS01_SF24;
215 	u8 CXT04;
216 	u8 CA;
217 	u8 LFEPBL01_LSV36_DM_INH7;
218 };
219 
220 union audio_infoframe {
221 	struct hdmi_audio_infoframe hdmi;
222 	struct dp_audio_infoframe dp;
223 	u8 bytes[0];
224 };
225 
226 /*
227  * HDMI routines
228  */
229 
230 #define get_pin(spec, idx) \
231 	((struct hdmi_spec_per_pin *)snd_array_elem(&spec->pins, idx))
232 #define get_cvt(spec, idx) \
233 	((struct hdmi_spec_per_cvt  *)snd_array_elem(&spec->cvts, idx))
234 /* obtain hdmi_pcm object assigned to idx */
235 #define get_hdmi_pcm(spec, idx)	(&(spec)->pcm_rec[idx])
236 /* obtain hda_pcm object assigned to idx */
237 #define get_pcm_rec(spec, idx)	(get_hdmi_pcm(spec, idx)->pcm)
238 
239 static int pin_id_to_pin_index(struct hda_codec *codec,
240 			       hda_nid_t pin_nid, int dev_id)
241 {
242 	struct hdmi_spec *spec = codec->spec;
243 	int pin_idx;
244 	struct hdmi_spec_per_pin *per_pin;
245 
246 	/*
247 	 * (dev_id == -1) means it is NON-MST pin
248 	 * return the first virtual pin on this port
249 	 */
250 	if (dev_id == -1)
251 		dev_id = 0;
252 
253 	for (pin_idx = 0; pin_idx < spec->num_pins; pin_idx++) {
254 		per_pin = get_pin(spec, pin_idx);
255 		if ((per_pin->pin_nid == pin_nid) &&
256 			(per_pin->dev_id == dev_id))
257 			return pin_idx;
258 	}
259 
260 	codec_warn(codec, "HDMI: pin nid %d not registered\n", pin_nid);
261 	return -EINVAL;
262 }
263 
264 static int hinfo_to_pcm_index(struct hda_codec *codec,
265 			struct hda_pcm_stream *hinfo)
266 {
267 	struct hdmi_spec *spec = codec->spec;
268 	int pcm_idx;
269 
270 	for (pcm_idx = 0; pcm_idx < spec->pcm_used; pcm_idx++)
271 		if (get_pcm_rec(spec, pcm_idx)->stream == hinfo)
272 			return pcm_idx;
273 
274 	codec_warn(codec, "HDMI: hinfo %p not registered\n", hinfo);
275 	return -EINVAL;
276 }
277 
278 static int hinfo_to_pin_index(struct hda_codec *codec,
279 			      struct hda_pcm_stream *hinfo)
280 {
281 	struct hdmi_spec *spec = codec->spec;
282 	struct hdmi_spec_per_pin *per_pin;
283 	int pin_idx;
284 
285 	for (pin_idx = 0; pin_idx < spec->num_pins; pin_idx++) {
286 		per_pin = get_pin(spec, pin_idx);
287 		if (per_pin->pcm &&
288 			per_pin->pcm->pcm->stream == hinfo)
289 			return pin_idx;
290 	}
291 
292 	codec_dbg(codec, "HDMI: hinfo %p not registered\n", hinfo);
293 	return -EINVAL;
294 }
295 
296 static struct hdmi_spec_per_pin *pcm_idx_to_pin(struct hdmi_spec *spec,
297 						int pcm_idx)
298 {
299 	int i;
300 	struct hdmi_spec_per_pin *per_pin;
301 
302 	for (i = 0; i < spec->num_pins; i++) {
303 		per_pin = get_pin(spec, i);
304 		if (per_pin->pcm_idx == pcm_idx)
305 			return per_pin;
306 	}
307 	return NULL;
308 }
309 
310 static int cvt_nid_to_cvt_index(struct hda_codec *codec, hda_nid_t cvt_nid)
311 {
312 	struct hdmi_spec *spec = codec->spec;
313 	int cvt_idx;
314 
315 	for (cvt_idx = 0; cvt_idx < spec->num_cvts; cvt_idx++)
316 		if (get_cvt(spec, cvt_idx)->cvt_nid == cvt_nid)
317 			return cvt_idx;
318 
319 	codec_warn(codec, "HDMI: cvt nid %d not registered\n", cvt_nid);
320 	return -EINVAL;
321 }
322 
323 static int hdmi_eld_ctl_info(struct snd_kcontrol *kcontrol,
324 			struct snd_ctl_elem_info *uinfo)
325 {
326 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
327 	struct hdmi_spec *spec = codec->spec;
328 	struct hdmi_spec_per_pin *per_pin;
329 	struct hdmi_eld *eld;
330 	int pcm_idx;
331 
332 	uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
333 
334 	pcm_idx = kcontrol->private_value;
335 	mutex_lock(&spec->pcm_lock);
336 	per_pin = pcm_idx_to_pin(spec, pcm_idx);
337 	if (!per_pin) {
338 		/* no pin is bound to the pcm */
339 		uinfo->count = 0;
340 		mutex_unlock(&spec->pcm_lock);
341 		return 0;
342 	}
343 	eld = &per_pin->sink_eld;
344 	uinfo->count = eld->eld_valid ? eld->eld_size : 0;
345 	mutex_unlock(&spec->pcm_lock);
346 
347 	return 0;
348 }
349 
350 static int hdmi_eld_ctl_get(struct snd_kcontrol *kcontrol,
351 			struct snd_ctl_elem_value *ucontrol)
352 {
353 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
354 	struct hdmi_spec *spec = codec->spec;
355 	struct hdmi_spec_per_pin *per_pin;
356 	struct hdmi_eld *eld;
357 	int pcm_idx;
358 
359 	pcm_idx = kcontrol->private_value;
360 	mutex_lock(&spec->pcm_lock);
361 	per_pin = pcm_idx_to_pin(spec, pcm_idx);
362 	if (!per_pin) {
363 		/* no pin is bound to the pcm */
364 		memset(ucontrol->value.bytes.data, 0,
365 		       ARRAY_SIZE(ucontrol->value.bytes.data));
366 		mutex_unlock(&spec->pcm_lock);
367 		return 0;
368 	}
369 	eld = &per_pin->sink_eld;
370 
371 	if (eld->eld_size > ARRAY_SIZE(ucontrol->value.bytes.data) ||
372 	    eld->eld_size > ELD_MAX_SIZE) {
373 		mutex_unlock(&spec->pcm_lock);
374 		snd_BUG();
375 		return -EINVAL;
376 	}
377 
378 	memset(ucontrol->value.bytes.data, 0,
379 	       ARRAY_SIZE(ucontrol->value.bytes.data));
380 	if (eld->eld_valid)
381 		memcpy(ucontrol->value.bytes.data, eld->eld_buffer,
382 		       eld->eld_size);
383 	mutex_unlock(&spec->pcm_lock);
384 
385 	return 0;
386 }
387 
388 static const struct snd_kcontrol_new eld_bytes_ctl = {
389 	.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
390 	.iface = SNDRV_CTL_ELEM_IFACE_PCM,
391 	.name = "ELD",
392 	.info = hdmi_eld_ctl_info,
393 	.get = hdmi_eld_ctl_get,
394 };
395 
396 static int hdmi_create_eld_ctl(struct hda_codec *codec, int pcm_idx,
397 			int device)
398 {
399 	struct snd_kcontrol *kctl;
400 	struct hdmi_spec *spec = codec->spec;
401 	int err;
402 
403 	kctl = snd_ctl_new1(&eld_bytes_ctl, codec);
404 	if (!kctl)
405 		return -ENOMEM;
406 	kctl->private_value = pcm_idx;
407 	kctl->id.device = device;
408 
409 	/* no pin nid is associated with the kctl now
410 	 * tbd: associate pin nid to eld ctl later
411 	 */
412 	err = snd_hda_ctl_add(codec, 0, kctl);
413 	if (err < 0)
414 		return err;
415 
416 	get_hdmi_pcm(spec, pcm_idx)->eld_ctl = kctl;
417 	return 0;
418 }
419 
420 #ifdef BE_PARANOID
421 static void hdmi_get_dip_index(struct hda_codec *codec, hda_nid_t pin_nid,
422 				int *packet_index, int *byte_index)
423 {
424 	int val;
425 
426 	val = snd_hda_codec_read(codec, pin_nid, 0,
427 				 AC_VERB_GET_HDMI_DIP_INDEX, 0);
428 
429 	*packet_index = val >> 5;
430 	*byte_index = val & 0x1f;
431 }
432 #endif
433 
434 static void hdmi_set_dip_index(struct hda_codec *codec, hda_nid_t pin_nid,
435 				int packet_index, int byte_index)
436 {
437 	int val;
438 
439 	val = (packet_index << 5) | (byte_index & 0x1f);
440 
441 	snd_hda_codec_write(codec, pin_nid, 0, AC_VERB_SET_HDMI_DIP_INDEX, val);
442 }
443 
444 static void hdmi_write_dip_byte(struct hda_codec *codec, hda_nid_t pin_nid,
445 				unsigned char val)
446 {
447 	snd_hda_codec_write(codec, pin_nid, 0, AC_VERB_SET_HDMI_DIP_DATA, val);
448 }
449 
450 static void hdmi_init_pin(struct hda_codec *codec, hda_nid_t pin_nid)
451 {
452 	struct hdmi_spec *spec = codec->spec;
453 	int pin_out;
454 
455 	/* Unmute */
456 	if (get_wcaps(codec, pin_nid) & AC_WCAP_OUT_AMP)
457 		snd_hda_codec_write(codec, pin_nid, 0,
458 				AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_UNMUTE);
459 
460 	if (spec->dyn_pin_out)
461 		/* Disable pin out until stream is active */
462 		pin_out = 0;
463 	else
464 		/* Enable pin out: some machines with GM965 gets broken output
465 		 * when the pin is disabled or changed while using with HDMI
466 		 */
467 		pin_out = PIN_OUT;
468 
469 	snd_hda_codec_write(codec, pin_nid, 0,
470 			    AC_VERB_SET_PIN_WIDGET_CONTROL, pin_out);
471 }
472 
473 /*
474  * ELD proc files
475  */
476 
477 #ifdef CONFIG_SND_PROC_FS
478 static void print_eld_info(struct snd_info_entry *entry,
479 			   struct snd_info_buffer *buffer)
480 {
481 	struct hdmi_spec_per_pin *per_pin = entry->private_data;
482 
483 	mutex_lock(&per_pin->lock);
484 	snd_hdmi_print_eld_info(&per_pin->sink_eld, buffer);
485 	mutex_unlock(&per_pin->lock);
486 }
487 
488 static void write_eld_info(struct snd_info_entry *entry,
489 			   struct snd_info_buffer *buffer)
490 {
491 	struct hdmi_spec_per_pin *per_pin = entry->private_data;
492 
493 	mutex_lock(&per_pin->lock);
494 	snd_hdmi_write_eld_info(&per_pin->sink_eld, buffer);
495 	mutex_unlock(&per_pin->lock);
496 }
497 
498 static int eld_proc_new(struct hdmi_spec_per_pin *per_pin, int index)
499 {
500 	char name[32];
501 	struct hda_codec *codec = per_pin->codec;
502 	struct snd_info_entry *entry;
503 	int err;
504 
505 	snprintf(name, sizeof(name), "eld#%d.%d", codec->addr, index);
506 	err = snd_card_proc_new(codec->card, name, &entry);
507 	if (err < 0)
508 		return err;
509 
510 	snd_info_set_text_ops(entry, per_pin, print_eld_info);
511 	entry->c.text.write = write_eld_info;
512 	entry->mode |= S_IWUSR;
513 	per_pin->proc_entry = entry;
514 
515 	return 0;
516 }
517 
518 static void eld_proc_free(struct hdmi_spec_per_pin *per_pin)
519 {
520 	if (!per_pin->codec->bus->shutdown) {
521 		snd_info_free_entry(per_pin->proc_entry);
522 		per_pin->proc_entry = NULL;
523 	}
524 }
525 #else
526 static inline int eld_proc_new(struct hdmi_spec_per_pin *per_pin,
527 			       int index)
528 {
529 	return 0;
530 }
531 static inline void eld_proc_free(struct hdmi_spec_per_pin *per_pin)
532 {
533 }
534 #endif
535 
536 /*
537  * Audio InfoFrame routines
538  */
539 
540 /*
541  * Enable Audio InfoFrame Transmission
542  */
543 static void hdmi_start_infoframe_trans(struct hda_codec *codec,
544 				       hda_nid_t pin_nid)
545 {
546 	hdmi_set_dip_index(codec, pin_nid, 0x0, 0x0);
547 	snd_hda_codec_write(codec, pin_nid, 0, AC_VERB_SET_HDMI_DIP_XMIT,
548 						AC_DIPXMIT_BEST);
549 }
550 
551 /*
552  * Disable Audio InfoFrame Transmission
553  */
554 static void hdmi_stop_infoframe_trans(struct hda_codec *codec,
555 				      hda_nid_t pin_nid)
556 {
557 	hdmi_set_dip_index(codec, pin_nid, 0x0, 0x0);
558 	snd_hda_codec_write(codec, pin_nid, 0, AC_VERB_SET_HDMI_DIP_XMIT,
559 						AC_DIPXMIT_DISABLE);
560 }
561 
562 static void hdmi_debug_dip_size(struct hda_codec *codec, hda_nid_t pin_nid)
563 {
564 #ifdef CONFIG_SND_DEBUG_VERBOSE
565 	int i;
566 	int size;
567 
568 	size = snd_hdmi_get_eld_size(codec, pin_nid);
569 	codec_dbg(codec, "HDMI: ELD buf size is %d\n", size);
570 
571 	for (i = 0; i < 8; i++) {
572 		size = snd_hda_codec_read(codec, pin_nid, 0,
573 						AC_VERB_GET_HDMI_DIP_SIZE, i);
574 		codec_dbg(codec, "HDMI: DIP GP[%d] buf size is %d\n", i, size);
575 	}
576 #endif
577 }
578 
579 static void hdmi_clear_dip_buffers(struct hda_codec *codec, hda_nid_t pin_nid)
580 {
581 #ifdef BE_PARANOID
582 	int i, j;
583 	int size;
584 	int pi, bi;
585 	for (i = 0; i < 8; i++) {
586 		size = snd_hda_codec_read(codec, pin_nid, 0,
587 						AC_VERB_GET_HDMI_DIP_SIZE, i);
588 		if (size == 0)
589 			continue;
590 
591 		hdmi_set_dip_index(codec, pin_nid, i, 0x0);
592 		for (j = 1; j < 1000; j++) {
593 			hdmi_write_dip_byte(codec, pin_nid, 0x0);
594 			hdmi_get_dip_index(codec, pin_nid, &pi, &bi);
595 			if (pi != i)
596 				codec_dbg(codec, "dip index %d: %d != %d\n",
597 						bi, pi, i);
598 			if (bi == 0) /* byte index wrapped around */
599 				break;
600 		}
601 		codec_dbg(codec,
602 			"HDMI: DIP GP[%d] buf reported size=%d, written=%d\n",
603 			i, size, j);
604 	}
605 #endif
606 }
607 
608 static void hdmi_checksum_audio_infoframe(struct hdmi_audio_infoframe *hdmi_ai)
609 {
610 	u8 *bytes = (u8 *)hdmi_ai;
611 	u8 sum = 0;
612 	int i;
613 
614 	hdmi_ai->checksum = 0;
615 
616 	for (i = 0; i < sizeof(*hdmi_ai); i++)
617 		sum += bytes[i];
618 
619 	hdmi_ai->checksum = -sum;
620 }
621 
622 static void hdmi_fill_audio_infoframe(struct hda_codec *codec,
623 				      hda_nid_t pin_nid,
624 				      u8 *dip, int size)
625 {
626 	int i;
627 
628 	hdmi_debug_dip_size(codec, pin_nid);
629 	hdmi_clear_dip_buffers(codec, pin_nid); /* be paranoid */
630 
631 	hdmi_set_dip_index(codec, pin_nid, 0x0, 0x0);
632 	for (i = 0; i < size; i++)
633 		hdmi_write_dip_byte(codec, pin_nid, dip[i]);
634 }
635 
636 static bool hdmi_infoframe_uptodate(struct hda_codec *codec, hda_nid_t pin_nid,
637 				    u8 *dip, int size)
638 {
639 	u8 val;
640 	int i;
641 
642 	if (snd_hda_codec_read(codec, pin_nid, 0, AC_VERB_GET_HDMI_DIP_XMIT, 0)
643 							    != AC_DIPXMIT_BEST)
644 		return false;
645 
646 	hdmi_set_dip_index(codec, pin_nid, 0x0, 0x0);
647 	for (i = 0; i < size; i++) {
648 		val = snd_hda_codec_read(codec, pin_nid, 0,
649 					 AC_VERB_GET_HDMI_DIP_DATA, 0);
650 		if (val != dip[i])
651 			return false;
652 	}
653 
654 	return true;
655 }
656 
657 static void hdmi_pin_setup_infoframe(struct hda_codec *codec,
658 				     hda_nid_t pin_nid,
659 				     int ca, int active_channels,
660 				     int conn_type)
661 {
662 	union audio_infoframe ai;
663 
664 	memset(&ai, 0, sizeof(ai));
665 	if (conn_type == 0) { /* HDMI */
666 		struct hdmi_audio_infoframe *hdmi_ai = &ai.hdmi;
667 
668 		hdmi_ai->type		= 0x84;
669 		hdmi_ai->ver		= 0x01;
670 		hdmi_ai->len		= 0x0a;
671 		hdmi_ai->CC02_CT47	= active_channels - 1;
672 		hdmi_ai->CA		= ca;
673 		hdmi_checksum_audio_infoframe(hdmi_ai);
674 	} else if (conn_type == 1) { /* DisplayPort */
675 		struct dp_audio_infoframe *dp_ai = &ai.dp;
676 
677 		dp_ai->type		= 0x84;
678 		dp_ai->len		= 0x1b;
679 		dp_ai->ver		= 0x11 << 2;
680 		dp_ai->CC02_CT47	= active_channels - 1;
681 		dp_ai->CA		= ca;
682 	} else {
683 		codec_dbg(codec, "HDMI: unknown connection type at pin %d\n",
684 			    pin_nid);
685 		return;
686 	}
687 
688 	/*
689 	 * sizeof(ai) is used instead of sizeof(*hdmi_ai) or
690 	 * sizeof(*dp_ai) to avoid partial match/update problems when
691 	 * the user switches between HDMI/DP monitors.
692 	 */
693 	if (!hdmi_infoframe_uptodate(codec, pin_nid, ai.bytes,
694 					sizeof(ai))) {
695 		codec_dbg(codec,
696 			  "hdmi_pin_setup_infoframe: pin=%d channels=%d ca=0x%02x\n",
697 			    pin_nid,
698 			    active_channels, ca);
699 		hdmi_stop_infoframe_trans(codec, pin_nid);
700 		hdmi_fill_audio_infoframe(codec, pin_nid,
701 					    ai.bytes, sizeof(ai));
702 		hdmi_start_infoframe_trans(codec, pin_nid);
703 	}
704 }
705 
706 static void hdmi_setup_audio_infoframe(struct hda_codec *codec,
707 				       struct hdmi_spec_per_pin *per_pin,
708 				       bool non_pcm)
709 {
710 	struct hdmi_spec *spec = codec->spec;
711 	struct hdac_chmap *chmap = &spec->chmap;
712 	hda_nid_t pin_nid = per_pin->pin_nid;
713 	int channels = per_pin->channels;
714 	int active_channels;
715 	struct hdmi_eld *eld;
716 	int ca;
717 
718 	if (!channels)
719 		return;
720 
721 	/* some HW (e.g. HSW+) needs reprogramming the amp at each time */
722 	if (get_wcaps(codec, pin_nid) & AC_WCAP_OUT_AMP)
723 		snd_hda_codec_write(codec, pin_nid, 0,
724 					    AC_VERB_SET_AMP_GAIN_MUTE,
725 					    AMP_OUT_UNMUTE);
726 
727 	eld = &per_pin->sink_eld;
728 
729 	ca = snd_hdac_channel_allocation(&codec->core,
730 			eld->info.spk_alloc, channels,
731 			per_pin->chmap_set, non_pcm, per_pin->chmap);
732 
733 	active_channels = snd_hdac_get_active_channels(ca);
734 
735 	chmap->ops.set_channel_count(&codec->core, per_pin->cvt_nid,
736 						active_channels);
737 
738 	/*
739 	 * always configure channel mapping, it may have been changed by the
740 	 * user in the meantime
741 	 */
742 	snd_hdac_setup_channel_mapping(&spec->chmap,
743 				pin_nid, non_pcm, ca, channels,
744 				per_pin->chmap, per_pin->chmap_set);
745 
746 	spec->ops.pin_setup_infoframe(codec, pin_nid, ca, active_channels,
747 				      eld->info.conn_type);
748 
749 	per_pin->non_pcm = non_pcm;
750 }
751 
752 /*
753  * Unsolicited events
754  */
755 
756 static bool hdmi_present_sense(struct hdmi_spec_per_pin *per_pin, int repoll);
757 
758 static void check_presence_and_report(struct hda_codec *codec, hda_nid_t nid,
759 				      int dev_id)
760 {
761 	struct hdmi_spec *spec = codec->spec;
762 	int pin_idx = pin_id_to_pin_index(codec, nid, dev_id);
763 
764 	if (pin_idx < 0)
765 		return;
766 	if (hdmi_present_sense(get_pin(spec, pin_idx), 1))
767 		snd_hda_jack_report_sync(codec);
768 }
769 
770 static void jack_callback(struct hda_codec *codec,
771 			  struct hda_jack_callback *jack)
772 {
773 	/* hda_jack don't support DP MST */
774 	check_presence_and_report(codec, jack->nid, 0);
775 }
776 
777 static void hdmi_intrinsic_event(struct hda_codec *codec, unsigned int res)
778 {
779 	int tag = res >> AC_UNSOL_RES_TAG_SHIFT;
780 	struct hda_jack_tbl *jack;
781 	int dev_entry = (res & AC_UNSOL_RES_DE) >> AC_UNSOL_RES_DE_SHIFT;
782 
783 	/*
784 	 * assume DP MST uses dyn_pcm_assign and acomp and
785 	 * never comes here
786 	 * if DP MST supports unsol event, below code need
787 	 * consider dev_entry
788 	 */
789 	jack = snd_hda_jack_tbl_get_from_tag(codec, tag);
790 	if (!jack)
791 		return;
792 	jack->jack_dirty = 1;
793 
794 	codec_dbg(codec,
795 		"HDMI hot plug event: Codec=%d Pin=%d Device=%d Inactive=%d Presence_Detect=%d ELD_Valid=%d\n",
796 		codec->addr, jack->nid, dev_entry, !!(res & AC_UNSOL_RES_IA),
797 		!!(res & AC_UNSOL_RES_PD), !!(res & AC_UNSOL_RES_ELDV));
798 
799 	/* hda_jack don't support DP MST */
800 	check_presence_and_report(codec, jack->nid, 0);
801 }
802 
803 static void hdmi_non_intrinsic_event(struct hda_codec *codec, unsigned int res)
804 {
805 	int tag = res >> AC_UNSOL_RES_TAG_SHIFT;
806 	int subtag = (res & AC_UNSOL_RES_SUBTAG) >> AC_UNSOL_RES_SUBTAG_SHIFT;
807 	int cp_state = !!(res & AC_UNSOL_RES_CP_STATE);
808 	int cp_ready = !!(res & AC_UNSOL_RES_CP_READY);
809 
810 	codec_info(codec,
811 		"HDMI CP event: CODEC=%d TAG=%d SUBTAG=0x%x CP_STATE=%d CP_READY=%d\n",
812 		codec->addr,
813 		tag,
814 		subtag,
815 		cp_state,
816 		cp_ready);
817 
818 	/* TODO */
819 	if (cp_state)
820 		;
821 	if (cp_ready)
822 		;
823 }
824 
825 
826 static void hdmi_unsol_event(struct hda_codec *codec, unsigned int res)
827 {
828 	int tag = res >> AC_UNSOL_RES_TAG_SHIFT;
829 	int subtag = (res & AC_UNSOL_RES_SUBTAG) >> AC_UNSOL_RES_SUBTAG_SHIFT;
830 
831 	if (!snd_hda_jack_tbl_get_from_tag(codec, tag)) {
832 		codec_dbg(codec, "Unexpected HDMI event tag 0x%x\n", tag);
833 		return;
834 	}
835 
836 	if (subtag == 0)
837 		hdmi_intrinsic_event(codec, res);
838 	else
839 		hdmi_non_intrinsic_event(codec, res);
840 }
841 
842 static void haswell_verify_D0(struct hda_codec *codec,
843 		hda_nid_t cvt_nid, hda_nid_t nid)
844 {
845 	int pwr;
846 
847 	/* For Haswell, the converter 1/2 may keep in D3 state after bootup,
848 	 * thus pins could only choose converter 0 for use. Make sure the
849 	 * converters are in correct power state */
850 	if (!snd_hda_check_power_state(codec, cvt_nid, AC_PWRST_D0))
851 		snd_hda_codec_write(codec, cvt_nid, 0, AC_VERB_SET_POWER_STATE, AC_PWRST_D0);
852 
853 	if (!snd_hda_check_power_state(codec, nid, AC_PWRST_D0)) {
854 		snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_POWER_STATE,
855 				    AC_PWRST_D0);
856 		msleep(40);
857 		pwr = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_POWER_STATE, 0);
858 		pwr = (pwr & AC_PWRST_ACTUAL) >> AC_PWRST_ACTUAL_SHIFT;
859 		codec_dbg(codec, "Haswell HDMI audio: Power for pin 0x%x is now D%d\n", nid, pwr);
860 	}
861 }
862 
863 /*
864  * Callbacks
865  */
866 
867 /* HBR should be Non-PCM, 8 channels */
868 #define is_hbr_format(format) \
869 	((format & AC_FMT_TYPE_NON_PCM) && (format & AC_FMT_CHAN_MASK) == 7)
870 
871 static int hdmi_pin_hbr_setup(struct hda_codec *codec, hda_nid_t pin_nid,
872 			      bool hbr)
873 {
874 	int pinctl, new_pinctl;
875 
876 	if (snd_hda_query_pin_caps(codec, pin_nid) & AC_PINCAP_HBR) {
877 		pinctl = snd_hda_codec_read(codec, pin_nid, 0,
878 					    AC_VERB_GET_PIN_WIDGET_CONTROL, 0);
879 
880 		if (pinctl < 0)
881 			return hbr ? -EINVAL : 0;
882 
883 		new_pinctl = pinctl & ~AC_PINCTL_EPT;
884 		if (hbr)
885 			new_pinctl |= AC_PINCTL_EPT_HBR;
886 		else
887 			new_pinctl |= AC_PINCTL_EPT_NATIVE;
888 
889 		codec_dbg(codec,
890 			  "hdmi_pin_hbr_setup: NID=0x%x, %spinctl=0x%x\n",
891 			    pin_nid,
892 			    pinctl == new_pinctl ? "" : "new-",
893 			    new_pinctl);
894 
895 		if (pinctl != new_pinctl)
896 			snd_hda_codec_write(codec, pin_nid, 0,
897 					    AC_VERB_SET_PIN_WIDGET_CONTROL,
898 					    new_pinctl);
899 	} else if (hbr)
900 		return -EINVAL;
901 
902 	return 0;
903 }
904 
905 static int hdmi_setup_stream(struct hda_codec *codec, hda_nid_t cvt_nid,
906 			      hda_nid_t pin_nid, u32 stream_tag, int format)
907 {
908 	struct hdmi_spec *spec = codec->spec;
909 	int err;
910 
911 	err = spec->ops.pin_hbr_setup(codec, pin_nid, is_hbr_format(format));
912 
913 	if (err) {
914 		codec_dbg(codec, "hdmi_setup_stream: HBR is not supported\n");
915 		return err;
916 	}
917 
918 	snd_hda_codec_setup_stream(codec, cvt_nid, stream_tag, 0, format);
919 	return 0;
920 }
921 
922 /* Try to find an available converter
923  * If pin_idx is less then zero, just try to find an available converter.
924  * Otherwise, try to find an available converter and get the cvt mux index
925  * of the pin.
926  */
927 static int hdmi_choose_cvt(struct hda_codec *codec,
928 			   int pin_idx, int *cvt_id)
929 {
930 	struct hdmi_spec *spec = codec->spec;
931 	struct hdmi_spec_per_pin *per_pin;
932 	struct hdmi_spec_per_cvt *per_cvt = NULL;
933 	int cvt_idx, mux_idx = 0;
934 
935 	/* pin_idx < 0 means no pin will be bound to the converter */
936 	if (pin_idx < 0)
937 		per_pin = NULL;
938 	else
939 		per_pin = get_pin(spec, pin_idx);
940 
941 	/* Dynamically assign converter to stream */
942 	for (cvt_idx = 0; cvt_idx < spec->num_cvts; cvt_idx++) {
943 		per_cvt = get_cvt(spec, cvt_idx);
944 
945 		/* Must not already be assigned */
946 		if (per_cvt->assigned)
947 			continue;
948 		if (per_pin == NULL)
949 			break;
950 		/* Must be in pin's mux's list of converters */
951 		for (mux_idx = 0; mux_idx < per_pin->num_mux_nids; mux_idx++)
952 			if (per_pin->mux_nids[mux_idx] == per_cvt->cvt_nid)
953 				break;
954 		/* Not in mux list */
955 		if (mux_idx == per_pin->num_mux_nids)
956 			continue;
957 		break;
958 	}
959 
960 	/* No free converters */
961 	if (cvt_idx == spec->num_cvts)
962 		return -EBUSY;
963 
964 	if (per_pin != NULL)
965 		per_pin->mux_idx = mux_idx;
966 
967 	if (cvt_id)
968 		*cvt_id = cvt_idx;
969 
970 	return 0;
971 }
972 
973 /* Assure the pin select the right convetor */
974 static void intel_verify_pin_cvt_connect(struct hda_codec *codec,
975 			struct hdmi_spec_per_pin *per_pin)
976 {
977 	hda_nid_t pin_nid = per_pin->pin_nid;
978 	int mux_idx, curr;
979 
980 	mux_idx = per_pin->mux_idx;
981 	curr = snd_hda_codec_read(codec, pin_nid, 0,
982 					  AC_VERB_GET_CONNECT_SEL, 0);
983 	if (curr != mux_idx)
984 		snd_hda_codec_write_cache(codec, pin_nid, 0,
985 					    AC_VERB_SET_CONNECT_SEL,
986 					    mux_idx);
987 }
988 
989 /* get the mux index for the converter of the pins
990  * converter's mux index is the same for all pins on Intel platform
991  */
992 static int intel_cvt_id_to_mux_idx(struct hdmi_spec *spec,
993 			hda_nid_t cvt_nid)
994 {
995 	int i;
996 
997 	for (i = 0; i < spec->num_cvts; i++)
998 		if (spec->cvt_nids[i] == cvt_nid)
999 			return i;
1000 	return -EINVAL;
1001 }
1002 
1003 /* Intel HDMI workaround to fix audio routing issue:
1004  * For some Intel display codecs, pins share the same connection list.
1005  * So a conveter can be selected by multiple pins and playback on any of these
1006  * pins will generate sound on the external display, because audio flows from
1007  * the same converter to the display pipeline. Also muting one pin may make
1008  * other pins have no sound output.
1009  * So this function assures that an assigned converter for a pin is not selected
1010  * by any other pins.
1011  */
1012 static void intel_not_share_assigned_cvt(struct hda_codec *codec,
1013 					 hda_nid_t pin_nid,
1014 					 int dev_id, int mux_idx)
1015 {
1016 	struct hdmi_spec *spec = codec->spec;
1017 	hda_nid_t nid;
1018 	int cvt_idx, curr;
1019 	struct hdmi_spec_per_cvt *per_cvt;
1020 	struct hdmi_spec_per_pin *per_pin;
1021 	int pin_idx;
1022 
1023 	/* configure the pins connections */
1024 	for (pin_idx = 0; pin_idx < spec->num_pins; pin_idx++) {
1025 		int dev_id_saved;
1026 		int dev_num;
1027 
1028 		per_pin = get_pin(spec, pin_idx);
1029 		/*
1030 		 * pin not connected to monitor
1031 		 * no need to operate on it
1032 		 */
1033 		if (!per_pin->pcm)
1034 			continue;
1035 
1036 		if ((per_pin->pin_nid == pin_nid) &&
1037 			(per_pin->dev_id == dev_id))
1038 			continue;
1039 
1040 		/*
1041 		 * if per_pin->dev_id >= dev_num,
1042 		 * snd_hda_get_dev_select() will fail,
1043 		 * and the following operation is unpredictable.
1044 		 * So skip this situation.
1045 		 */
1046 		dev_num = snd_hda_get_num_devices(codec, per_pin->pin_nid) + 1;
1047 		if (per_pin->dev_id >= dev_num)
1048 			continue;
1049 
1050 		nid = per_pin->pin_nid;
1051 
1052 		/*
1053 		 * Calling this function should not impact
1054 		 * on the device entry selection
1055 		 * So let's save the dev id for each pin,
1056 		 * and restore it when return
1057 		 */
1058 		dev_id_saved = snd_hda_get_dev_select(codec, nid);
1059 		snd_hda_set_dev_select(codec, nid, per_pin->dev_id);
1060 		curr = snd_hda_codec_read(codec, nid, 0,
1061 					  AC_VERB_GET_CONNECT_SEL, 0);
1062 		if (curr != mux_idx) {
1063 			snd_hda_set_dev_select(codec, nid, dev_id_saved);
1064 			continue;
1065 		}
1066 
1067 
1068 		/* choose an unassigned converter. The conveters in the
1069 		 * connection list are in the same order as in the codec.
1070 		 */
1071 		for (cvt_idx = 0; cvt_idx < spec->num_cvts; cvt_idx++) {
1072 			per_cvt = get_cvt(spec, cvt_idx);
1073 			if (!per_cvt->assigned) {
1074 				codec_dbg(codec,
1075 					  "choose cvt %d for pin nid %d\n",
1076 					cvt_idx, nid);
1077 				snd_hda_codec_write_cache(codec, nid, 0,
1078 					    AC_VERB_SET_CONNECT_SEL,
1079 					    cvt_idx);
1080 				break;
1081 			}
1082 		}
1083 		snd_hda_set_dev_select(codec, nid, dev_id_saved);
1084 	}
1085 }
1086 
1087 /* A wrapper of intel_not_share_asigned_cvt() */
1088 static void intel_not_share_assigned_cvt_nid(struct hda_codec *codec,
1089 			hda_nid_t pin_nid, int dev_id, hda_nid_t cvt_nid)
1090 {
1091 	int mux_idx;
1092 	struct hdmi_spec *spec = codec->spec;
1093 
1094 	/* On Intel platform, the mapping of converter nid to
1095 	 * mux index of the pins are always the same.
1096 	 * The pin nid may be 0, this means all pins will not
1097 	 * share the converter.
1098 	 */
1099 	mux_idx = intel_cvt_id_to_mux_idx(spec, cvt_nid);
1100 	if (mux_idx >= 0)
1101 		intel_not_share_assigned_cvt(codec, pin_nid, dev_id, mux_idx);
1102 }
1103 
1104 /* skeleton caller of pin_cvt_fixup ops */
1105 static void pin_cvt_fixup(struct hda_codec *codec,
1106 			  struct hdmi_spec_per_pin *per_pin,
1107 			  hda_nid_t cvt_nid)
1108 {
1109 	struct hdmi_spec *spec = codec->spec;
1110 
1111 	if (spec->ops.pin_cvt_fixup)
1112 		spec->ops.pin_cvt_fixup(codec, per_pin, cvt_nid);
1113 }
1114 
1115 /* called in hdmi_pcm_open when no pin is assigned to the PCM
1116  * in dyn_pcm_assign mode.
1117  */
1118 static int hdmi_pcm_open_no_pin(struct hda_pcm_stream *hinfo,
1119 			 struct hda_codec *codec,
1120 			 struct snd_pcm_substream *substream)
1121 {
1122 	struct hdmi_spec *spec = codec->spec;
1123 	struct snd_pcm_runtime *runtime = substream->runtime;
1124 	int cvt_idx, pcm_idx;
1125 	struct hdmi_spec_per_cvt *per_cvt = NULL;
1126 	int err;
1127 
1128 	pcm_idx = hinfo_to_pcm_index(codec, hinfo);
1129 	if (pcm_idx < 0)
1130 		return -EINVAL;
1131 
1132 	err = hdmi_choose_cvt(codec, -1, &cvt_idx);
1133 	if (err)
1134 		return err;
1135 
1136 	per_cvt = get_cvt(spec, cvt_idx);
1137 	per_cvt->assigned = 1;
1138 	hinfo->nid = per_cvt->cvt_nid;
1139 
1140 	pin_cvt_fixup(codec, NULL, per_cvt->cvt_nid);
1141 
1142 	set_bit(pcm_idx, &spec->pcm_in_use);
1143 	/* todo: setup spdif ctls assign */
1144 
1145 	/* Initially set the converter's capabilities */
1146 	hinfo->channels_min = per_cvt->channels_min;
1147 	hinfo->channels_max = per_cvt->channels_max;
1148 	hinfo->rates = per_cvt->rates;
1149 	hinfo->formats = per_cvt->formats;
1150 	hinfo->maxbps = per_cvt->maxbps;
1151 
1152 	/* Store the updated parameters */
1153 	runtime->hw.channels_min = hinfo->channels_min;
1154 	runtime->hw.channels_max = hinfo->channels_max;
1155 	runtime->hw.formats = hinfo->formats;
1156 	runtime->hw.rates = hinfo->rates;
1157 
1158 	snd_pcm_hw_constraint_step(substream->runtime, 0,
1159 				   SNDRV_PCM_HW_PARAM_CHANNELS, 2);
1160 	return 0;
1161 }
1162 
1163 /*
1164  * HDA PCM callbacks
1165  */
1166 static int hdmi_pcm_open(struct hda_pcm_stream *hinfo,
1167 			 struct hda_codec *codec,
1168 			 struct snd_pcm_substream *substream)
1169 {
1170 	struct hdmi_spec *spec = codec->spec;
1171 	struct snd_pcm_runtime *runtime = substream->runtime;
1172 	int pin_idx, cvt_idx, pcm_idx;
1173 	struct hdmi_spec_per_pin *per_pin;
1174 	struct hdmi_eld *eld;
1175 	struct hdmi_spec_per_cvt *per_cvt = NULL;
1176 	int err;
1177 
1178 	/* Validate hinfo */
1179 	pcm_idx = hinfo_to_pcm_index(codec, hinfo);
1180 	if (pcm_idx < 0)
1181 		return -EINVAL;
1182 
1183 	mutex_lock(&spec->pcm_lock);
1184 	pin_idx = hinfo_to_pin_index(codec, hinfo);
1185 	if (!spec->dyn_pcm_assign) {
1186 		if (snd_BUG_ON(pin_idx < 0)) {
1187 			mutex_unlock(&spec->pcm_lock);
1188 			return -EINVAL;
1189 		}
1190 	} else {
1191 		/* no pin is assigned to the PCM
1192 		 * PA need pcm open successfully when probe
1193 		 */
1194 		if (pin_idx < 0) {
1195 			err = hdmi_pcm_open_no_pin(hinfo, codec, substream);
1196 			mutex_unlock(&spec->pcm_lock);
1197 			return err;
1198 		}
1199 	}
1200 
1201 	err = hdmi_choose_cvt(codec, pin_idx, &cvt_idx);
1202 	if (err < 0) {
1203 		mutex_unlock(&spec->pcm_lock);
1204 		return err;
1205 	}
1206 
1207 	per_cvt = get_cvt(spec, cvt_idx);
1208 	/* Claim converter */
1209 	per_cvt->assigned = 1;
1210 
1211 	set_bit(pcm_idx, &spec->pcm_in_use);
1212 	per_pin = get_pin(spec, pin_idx);
1213 	per_pin->cvt_nid = per_cvt->cvt_nid;
1214 	hinfo->nid = per_cvt->cvt_nid;
1215 
1216 	snd_hda_set_dev_select(codec, per_pin->pin_nid, per_pin->dev_id);
1217 	snd_hda_codec_write_cache(codec, per_pin->pin_nid, 0,
1218 			    AC_VERB_SET_CONNECT_SEL,
1219 			    per_pin->mux_idx);
1220 
1221 	/* configure unused pins to choose other converters */
1222 	pin_cvt_fixup(codec, per_pin, 0);
1223 
1224 	snd_hda_spdif_ctls_assign(codec, pcm_idx, per_cvt->cvt_nid);
1225 
1226 	/* Initially set the converter's capabilities */
1227 	hinfo->channels_min = per_cvt->channels_min;
1228 	hinfo->channels_max = per_cvt->channels_max;
1229 	hinfo->rates = per_cvt->rates;
1230 	hinfo->formats = per_cvt->formats;
1231 	hinfo->maxbps = per_cvt->maxbps;
1232 
1233 	eld = &per_pin->sink_eld;
1234 	/* Restrict capabilities by ELD if this isn't disabled */
1235 	if (!static_hdmi_pcm && eld->eld_valid) {
1236 		snd_hdmi_eld_update_pcm_info(&eld->info, hinfo);
1237 		if (hinfo->channels_min > hinfo->channels_max ||
1238 		    !hinfo->rates || !hinfo->formats) {
1239 			per_cvt->assigned = 0;
1240 			hinfo->nid = 0;
1241 			snd_hda_spdif_ctls_unassign(codec, pcm_idx);
1242 			mutex_unlock(&spec->pcm_lock);
1243 			return -ENODEV;
1244 		}
1245 	}
1246 
1247 	mutex_unlock(&spec->pcm_lock);
1248 	/* Store the updated parameters */
1249 	runtime->hw.channels_min = hinfo->channels_min;
1250 	runtime->hw.channels_max = hinfo->channels_max;
1251 	runtime->hw.formats = hinfo->formats;
1252 	runtime->hw.rates = hinfo->rates;
1253 
1254 	snd_pcm_hw_constraint_step(substream->runtime, 0,
1255 				   SNDRV_PCM_HW_PARAM_CHANNELS, 2);
1256 	return 0;
1257 }
1258 
1259 /*
1260  * HDA/HDMI auto parsing
1261  */
1262 static int hdmi_read_pin_conn(struct hda_codec *codec, int pin_idx)
1263 {
1264 	struct hdmi_spec *spec = codec->spec;
1265 	struct hdmi_spec_per_pin *per_pin = get_pin(spec, pin_idx);
1266 	hda_nid_t pin_nid = per_pin->pin_nid;
1267 
1268 	if (!(get_wcaps(codec, pin_nid) & AC_WCAP_CONN_LIST)) {
1269 		codec_warn(codec,
1270 			   "HDMI: pin %d wcaps %#x does not support connection list\n",
1271 			   pin_nid, get_wcaps(codec, pin_nid));
1272 		return -EINVAL;
1273 	}
1274 
1275 	/* all the device entries on the same pin have the same conn list */
1276 	per_pin->num_mux_nids = snd_hda_get_connections(codec, pin_nid,
1277 							per_pin->mux_nids,
1278 							HDA_MAX_CONNECTIONS);
1279 
1280 	return 0;
1281 }
1282 
1283 static int hdmi_find_pcm_slot(struct hdmi_spec *spec,
1284 				struct hdmi_spec_per_pin *per_pin)
1285 {
1286 	int i;
1287 
1288 	/* try the prefer PCM */
1289 	if (!test_bit(per_pin->pin_nid_idx, &spec->pcm_bitmap))
1290 		return per_pin->pin_nid_idx;
1291 
1292 	/* have a second try; check the "reserved area" over num_pins */
1293 	for (i = spec->num_nids; i < spec->pcm_used; i++) {
1294 		if (!test_bit(i, &spec->pcm_bitmap))
1295 			return i;
1296 	}
1297 
1298 	/* the last try; check the empty slots in pins */
1299 	for (i = 0; i < spec->num_nids; i++) {
1300 		if (!test_bit(i, &spec->pcm_bitmap))
1301 			return i;
1302 	}
1303 	return -EBUSY;
1304 }
1305 
1306 static void hdmi_attach_hda_pcm(struct hdmi_spec *spec,
1307 				struct hdmi_spec_per_pin *per_pin)
1308 {
1309 	int idx;
1310 
1311 	/* pcm already be attached to the pin */
1312 	if (per_pin->pcm)
1313 		return;
1314 	idx = hdmi_find_pcm_slot(spec, per_pin);
1315 	if (idx == -EBUSY)
1316 		return;
1317 	per_pin->pcm_idx = idx;
1318 	per_pin->pcm = get_hdmi_pcm(spec, idx);
1319 	set_bit(idx, &spec->pcm_bitmap);
1320 }
1321 
1322 static void hdmi_detach_hda_pcm(struct hdmi_spec *spec,
1323 				struct hdmi_spec_per_pin *per_pin)
1324 {
1325 	int idx;
1326 
1327 	/* pcm already be detached from the pin */
1328 	if (!per_pin->pcm)
1329 		return;
1330 	idx = per_pin->pcm_idx;
1331 	per_pin->pcm_idx = -1;
1332 	per_pin->pcm = NULL;
1333 	if (idx >= 0 && idx < spec->pcm_used)
1334 		clear_bit(idx, &spec->pcm_bitmap);
1335 }
1336 
1337 static int hdmi_get_pin_cvt_mux(struct hdmi_spec *spec,
1338 		struct hdmi_spec_per_pin *per_pin, hda_nid_t cvt_nid)
1339 {
1340 	int mux_idx;
1341 
1342 	for (mux_idx = 0; mux_idx < per_pin->num_mux_nids; mux_idx++)
1343 		if (per_pin->mux_nids[mux_idx] == cvt_nid)
1344 			break;
1345 	return mux_idx;
1346 }
1347 
1348 static bool check_non_pcm_per_cvt(struct hda_codec *codec, hda_nid_t cvt_nid);
1349 
1350 static void hdmi_pcm_setup_pin(struct hdmi_spec *spec,
1351 			   struct hdmi_spec_per_pin *per_pin)
1352 {
1353 	struct hda_codec *codec = per_pin->codec;
1354 	struct hda_pcm *pcm;
1355 	struct hda_pcm_stream *hinfo;
1356 	struct snd_pcm_substream *substream;
1357 	int mux_idx;
1358 	bool non_pcm;
1359 
1360 	if (per_pin->pcm_idx >= 0 && per_pin->pcm_idx < spec->pcm_used)
1361 		pcm = get_pcm_rec(spec, per_pin->pcm_idx);
1362 	else
1363 		return;
1364 	if (!test_bit(per_pin->pcm_idx, &spec->pcm_in_use))
1365 		return;
1366 
1367 	/* hdmi audio only uses playback and one substream */
1368 	hinfo = pcm->stream;
1369 	substream = pcm->pcm->streams[0].substream;
1370 
1371 	per_pin->cvt_nid = hinfo->nid;
1372 
1373 	mux_idx = hdmi_get_pin_cvt_mux(spec, per_pin, hinfo->nid);
1374 	if (mux_idx < per_pin->num_mux_nids) {
1375 		snd_hda_set_dev_select(codec, per_pin->pin_nid,
1376 				   per_pin->dev_id);
1377 		snd_hda_codec_write_cache(codec, per_pin->pin_nid, 0,
1378 				AC_VERB_SET_CONNECT_SEL,
1379 				mux_idx);
1380 	}
1381 	snd_hda_spdif_ctls_assign(codec, per_pin->pcm_idx, hinfo->nid);
1382 
1383 	non_pcm = check_non_pcm_per_cvt(codec, hinfo->nid);
1384 	if (substream->runtime)
1385 		per_pin->channels = substream->runtime->channels;
1386 	per_pin->setup = true;
1387 	per_pin->mux_idx = mux_idx;
1388 
1389 	hdmi_setup_audio_infoframe(codec, per_pin, non_pcm);
1390 }
1391 
1392 static void hdmi_pcm_reset_pin(struct hdmi_spec *spec,
1393 			   struct hdmi_spec_per_pin *per_pin)
1394 {
1395 	if (per_pin->pcm_idx >= 0 && per_pin->pcm_idx < spec->pcm_used)
1396 		snd_hda_spdif_ctls_unassign(per_pin->codec, per_pin->pcm_idx);
1397 
1398 	per_pin->chmap_set = false;
1399 	memset(per_pin->chmap, 0, sizeof(per_pin->chmap));
1400 
1401 	per_pin->setup = false;
1402 	per_pin->channels = 0;
1403 }
1404 
1405 /* update per_pin ELD from the given new ELD;
1406  * setup info frame and notification accordingly
1407  */
1408 static void update_eld(struct hda_codec *codec,
1409 		       struct hdmi_spec_per_pin *per_pin,
1410 		       struct hdmi_eld *eld)
1411 {
1412 	struct hdmi_eld *pin_eld = &per_pin->sink_eld;
1413 	struct hdmi_spec *spec = codec->spec;
1414 	bool old_eld_valid = pin_eld->eld_valid;
1415 	bool eld_changed;
1416 	int pcm_idx = -1;
1417 
1418 	/* for monitor disconnection, save pcm_idx firstly */
1419 	pcm_idx = per_pin->pcm_idx;
1420 	if (spec->dyn_pcm_assign) {
1421 		if (eld->eld_valid) {
1422 			hdmi_attach_hda_pcm(spec, per_pin);
1423 			hdmi_pcm_setup_pin(spec, per_pin);
1424 		} else {
1425 			hdmi_pcm_reset_pin(spec, per_pin);
1426 			hdmi_detach_hda_pcm(spec, per_pin);
1427 		}
1428 	}
1429 	/* if pcm_idx == -1, it means this is in monitor connection event
1430 	 * we can get the correct pcm_idx now.
1431 	 */
1432 	if (pcm_idx == -1)
1433 		pcm_idx = per_pin->pcm_idx;
1434 
1435 	if (eld->eld_valid)
1436 		snd_hdmi_show_eld(codec, &eld->info);
1437 
1438 	eld_changed = (pin_eld->eld_valid != eld->eld_valid);
1439 	if (eld->eld_valid && pin_eld->eld_valid)
1440 		if (pin_eld->eld_size != eld->eld_size ||
1441 		    memcmp(pin_eld->eld_buffer, eld->eld_buffer,
1442 			   eld->eld_size) != 0)
1443 			eld_changed = true;
1444 
1445 	pin_eld->monitor_present = eld->monitor_present;
1446 	pin_eld->eld_valid = eld->eld_valid;
1447 	pin_eld->eld_size = eld->eld_size;
1448 	if (eld->eld_valid)
1449 		memcpy(pin_eld->eld_buffer, eld->eld_buffer, eld->eld_size);
1450 	pin_eld->info = eld->info;
1451 
1452 	/*
1453 	 * Re-setup pin and infoframe. This is needed e.g. when
1454 	 * - sink is first plugged-in
1455 	 * - transcoder can change during stream playback on Haswell
1456 	 *   and this can make HW reset converter selection on a pin.
1457 	 */
1458 	if (eld->eld_valid && !old_eld_valid && per_pin->setup) {
1459 		pin_cvt_fixup(codec, per_pin, 0);
1460 		hdmi_setup_audio_infoframe(codec, per_pin, per_pin->non_pcm);
1461 	}
1462 
1463 	if (eld_changed && pcm_idx >= 0)
1464 		snd_ctl_notify(codec->card,
1465 			       SNDRV_CTL_EVENT_MASK_VALUE |
1466 			       SNDRV_CTL_EVENT_MASK_INFO,
1467 			       &get_hdmi_pcm(spec, pcm_idx)->eld_ctl->id);
1468 }
1469 
1470 /* update ELD and jack state via HD-audio verbs */
1471 static bool hdmi_present_sense_via_verbs(struct hdmi_spec_per_pin *per_pin,
1472 					 int repoll)
1473 {
1474 	struct hda_jack_tbl *jack;
1475 	struct hda_codec *codec = per_pin->codec;
1476 	struct hdmi_spec *spec = codec->spec;
1477 	struct hdmi_eld *eld = &spec->temp_eld;
1478 	hda_nid_t pin_nid = per_pin->pin_nid;
1479 	/*
1480 	 * Always execute a GetPinSense verb here, even when called from
1481 	 * hdmi_intrinsic_event; for some NVIDIA HW, the unsolicited
1482 	 * response's PD bit is not the real PD value, but indicates that
1483 	 * the real PD value changed. An older version of the HD-audio
1484 	 * specification worked this way. Hence, we just ignore the data in
1485 	 * the unsolicited response to avoid custom WARs.
1486 	 */
1487 	int present;
1488 	bool ret;
1489 	bool do_repoll = false;
1490 
1491 	present = snd_hda_pin_sense(codec, pin_nid);
1492 
1493 	mutex_lock(&per_pin->lock);
1494 	eld->monitor_present = !!(present & AC_PINSENSE_PRESENCE);
1495 	if (eld->monitor_present)
1496 		eld->eld_valid  = !!(present & AC_PINSENSE_ELDV);
1497 	else
1498 		eld->eld_valid = false;
1499 
1500 	codec_dbg(codec,
1501 		"HDMI status: Codec=%d Pin=%d Presence_Detect=%d ELD_Valid=%d\n",
1502 		codec->addr, pin_nid, eld->monitor_present, eld->eld_valid);
1503 
1504 	if (eld->eld_valid) {
1505 		if (spec->ops.pin_get_eld(codec, pin_nid, eld->eld_buffer,
1506 						     &eld->eld_size) < 0)
1507 			eld->eld_valid = false;
1508 		else {
1509 			if (snd_hdmi_parse_eld(codec, &eld->info, eld->eld_buffer,
1510 						    eld->eld_size) < 0)
1511 				eld->eld_valid = false;
1512 		}
1513 		if (!eld->eld_valid && repoll)
1514 			do_repoll = true;
1515 	}
1516 
1517 	if (do_repoll)
1518 		schedule_delayed_work(&per_pin->work, msecs_to_jiffies(300));
1519 	else
1520 		update_eld(codec, per_pin, eld);
1521 
1522 	ret = !repoll || !eld->monitor_present || eld->eld_valid;
1523 
1524 	jack = snd_hda_jack_tbl_get(codec, pin_nid);
1525 	if (jack)
1526 		jack->block_report = !ret;
1527 
1528 	mutex_unlock(&per_pin->lock);
1529 	return ret;
1530 }
1531 
1532 static struct snd_jack *pin_idx_to_jack(struct hda_codec *codec,
1533 				 struct hdmi_spec_per_pin *per_pin)
1534 {
1535 	struct hdmi_spec *spec = codec->spec;
1536 	struct snd_jack *jack = NULL;
1537 	struct hda_jack_tbl *jack_tbl;
1538 
1539 	/* if !dyn_pcm_assign, get jack from hda_jack_tbl
1540 	 * in !dyn_pcm_assign case, spec->pcm_rec[].jack is not
1541 	 * NULL even after snd_hda_jack_tbl_clear() is called to
1542 	 * free snd_jack. This may cause access invalid memory
1543 	 * when calling snd_jack_report
1544 	 */
1545 	if (per_pin->pcm_idx >= 0 && spec->dyn_pcm_assign)
1546 		jack = spec->pcm_rec[per_pin->pcm_idx].jack;
1547 	else if (!spec->dyn_pcm_assign) {
1548 		/*
1549 		 * jack tbl doesn't support DP MST
1550 		 * DP MST will use dyn_pcm_assign,
1551 		 * so DP MST will never come here
1552 		 */
1553 		jack_tbl = snd_hda_jack_tbl_get(codec, per_pin->pin_nid);
1554 		if (jack_tbl)
1555 			jack = jack_tbl->jack;
1556 	}
1557 	return jack;
1558 }
1559 
1560 /* update ELD and jack state via audio component */
1561 static void sync_eld_via_acomp(struct hda_codec *codec,
1562 			       struct hdmi_spec_per_pin *per_pin)
1563 {
1564 	struct hdmi_spec *spec = codec->spec;
1565 	struct hdmi_eld *eld = &spec->temp_eld;
1566 	struct snd_jack *jack = NULL;
1567 	int size;
1568 
1569 	mutex_lock(&per_pin->lock);
1570 	eld->monitor_present = false;
1571 	size = snd_hdac_acomp_get_eld(&codec->core, per_pin->pin_nid,
1572 				      per_pin->dev_id, &eld->monitor_present,
1573 				      eld->eld_buffer, ELD_MAX_SIZE);
1574 	if (size > 0) {
1575 		size = min(size, ELD_MAX_SIZE);
1576 		if (snd_hdmi_parse_eld(codec, &eld->info,
1577 				       eld->eld_buffer, size) < 0)
1578 			size = -EINVAL;
1579 	}
1580 
1581 	if (size > 0) {
1582 		eld->eld_valid = true;
1583 		eld->eld_size = size;
1584 	} else {
1585 		eld->eld_valid = false;
1586 		eld->eld_size = 0;
1587 	}
1588 
1589 	/* pcm_idx >=0 before update_eld() means it is in monitor
1590 	 * disconnected event. Jack must be fetched before update_eld()
1591 	 */
1592 	jack = pin_idx_to_jack(codec, per_pin);
1593 	update_eld(codec, per_pin, eld);
1594 	if (jack == NULL)
1595 		jack = pin_idx_to_jack(codec, per_pin);
1596 	if (jack == NULL)
1597 		goto unlock;
1598 	snd_jack_report(jack,
1599 			eld->monitor_present ? SND_JACK_AVOUT : 0);
1600  unlock:
1601 	mutex_unlock(&per_pin->lock);
1602 }
1603 
1604 static bool hdmi_present_sense(struct hdmi_spec_per_pin *per_pin, int repoll)
1605 {
1606 	struct hda_codec *codec = per_pin->codec;
1607 	struct hdmi_spec *spec = codec->spec;
1608 	int ret;
1609 
1610 	/* no temporary power up/down needed for component notifier */
1611 	if (!codec_has_acomp(codec))
1612 		snd_hda_power_up_pm(codec);
1613 
1614 	mutex_lock(&spec->pcm_lock);
1615 	if (codec_has_acomp(codec)) {
1616 		sync_eld_via_acomp(codec, per_pin);
1617 		ret = false; /* don't call snd_hda_jack_report_sync() */
1618 	} else {
1619 		ret = hdmi_present_sense_via_verbs(per_pin, repoll);
1620 	}
1621 	mutex_unlock(&spec->pcm_lock);
1622 
1623 	if (!codec_has_acomp(codec))
1624 		snd_hda_power_down_pm(codec);
1625 
1626 	return ret;
1627 }
1628 
1629 static void hdmi_repoll_eld(struct work_struct *work)
1630 {
1631 	struct hdmi_spec_per_pin *per_pin =
1632 	container_of(to_delayed_work(work), struct hdmi_spec_per_pin, work);
1633 
1634 	if (per_pin->repoll_count++ > 6)
1635 		per_pin->repoll_count = 0;
1636 
1637 	if (hdmi_present_sense(per_pin, per_pin->repoll_count))
1638 		snd_hda_jack_report_sync(per_pin->codec);
1639 }
1640 
1641 static void intel_haswell_fixup_connect_list(struct hda_codec *codec,
1642 					     hda_nid_t nid);
1643 
1644 static int hdmi_add_pin(struct hda_codec *codec, hda_nid_t pin_nid)
1645 {
1646 	struct hdmi_spec *spec = codec->spec;
1647 	unsigned int caps, config;
1648 	int pin_idx;
1649 	struct hdmi_spec_per_pin *per_pin;
1650 	int err;
1651 	int dev_num, i;
1652 
1653 	caps = snd_hda_query_pin_caps(codec, pin_nid);
1654 	if (!(caps & (AC_PINCAP_HDMI | AC_PINCAP_DP)))
1655 		return 0;
1656 
1657 	/*
1658 	 * For DP MST audio, Configuration Default is the same for
1659 	 * all device entries on the same pin
1660 	 */
1661 	config = snd_hda_codec_get_pincfg(codec, pin_nid);
1662 	if (get_defcfg_connect(config) == AC_JACK_PORT_NONE)
1663 		return 0;
1664 
1665 	/*
1666 	 * To simplify the implementation, malloc all
1667 	 * the virtual pins in the initialization statically
1668 	 */
1669 	if (is_haswell_plus(codec)) {
1670 		/*
1671 		 * On Intel platforms, device entries number is
1672 		 * changed dynamically. If there is a DP MST
1673 		 * hub connected, the device entries number is 3.
1674 		 * Otherwise, it is 1.
1675 		 * Here we manually set dev_num to 3, so that
1676 		 * we can initialize all the device entries when
1677 		 * bootup statically.
1678 		 */
1679 		dev_num = 3;
1680 		spec->dev_num = 3;
1681 	} else if (spec->dyn_pcm_assign && codec->dp_mst) {
1682 		dev_num = snd_hda_get_num_devices(codec, pin_nid) + 1;
1683 		/*
1684 		 * spec->dev_num is the maxinum number of device entries
1685 		 * among all the pins
1686 		 */
1687 		spec->dev_num = (spec->dev_num > dev_num) ?
1688 			spec->dev_num : dev_num;
1689 	} else {
1690 		/*
1691 		 * If the platform doesn't support DP MST,
1692 		 * manually set dev_num to 1. This means
1693 		 * the pin has only one device entry.
1694 		 */
1695 		dev_num = 1;
1696 		spec->dev_num = 1;
1697 	}
1698 
1699 	for (i = 0; i < dev_num; i++) {
1700 		pin_idx = spec->num_pins;
1701 		per_pin = snd_array_new(&spec->pins);
1702 
1703 		if (!per_pin)
1704 			return -ENOMEM;
1705 
1706 		if (spec->dyn_pcm_assign) {
1707 			per_pin->pcm = NULL;
1708 			per_pin->pcm_idx = -1;
1709 		} else {
1710 			per_pin->pcm = get_hdmi_pcm(spec, pin_idx);
1711 			per_pin->pcm_idx = pin_idx;
1712 		}
1713 		per_pin->pin_nid = pin_nid;
1714 		per_pin->pin_nid_idx = spec->num_nids;
1715 		per_pin->dev_id = i;
1716 		per_pin->non_pcm = false;
1717 		snd_hda_set_dev_select(codec, pin_nid, i);
1718 		if (is_haswell_plus(codec))
1719 			intel_haswell_fixup_connect_list(codec, pin_nid);
1720 		err = hdmi_read_pin_conn(codec, pin_idx);
1721 		if (err < 0)
1722 			return err;
1723 		spec->num_pins++;
1724 	}
1725 	spec->num_nids++;
1726 
1727 	return 0;
1728 }
1729 
1730 static int hdmi_add_cvt(struct hda_codec *codec, hda_nid_t cvt_nid)
1731 {
1732 	struct hdmi_spec *spec = codec->spec;
1733 	struct hdmi_spec_per_cvt *per_cvt;
1734 	unsigned int chans;
1735 	int err;
1736 
1737 	chans = get_wcaps(codec, cvt_nid);
1738 	chans = get_wcaps_channels(chans);
1739 
1740 	per_cvt = snd_array_new(&spec->cvts);
1741 	if (!per_cvt)
1742 		return -ENOMEM;
1743 
1744 	per_cvt->cvt_nid = cvt_nid;
1745 	per_cvt->channels_min = 2;
1746 	if (chans <= 16) {
1747 		per_cvt->channels_max = chans;
1748 		if (chans > spec->chmap.channels_max)
1749 			spec->chmap.channels_max = chans;
1750 	}
1751 
1752 	err = snd_hda_query_supported_pcm(codec, cvt_nid,
1753 					  &per_cvt->rates,
1754 					  &per_cvt->formats,
1755 					  &per_cvt->maxbps);
1756 	if (err < 0)
1757 		return err;
1758 
1759 	if (spec->num_cvts < ARRAY_SIZE(spec->cvt_nids))
1760 		spec->cvt_nids[spec->num_cvts] = cvt_nid;
1761 	spec->num_cvts++;
1762 
1763 	return 0;
1764 }
1765 
1766 static int hdmi_parse_codec(struct hda_codec *codec)
1767 {
1768 	hda_nid_t nid;
1769 	int i, nodes;
1770 
1771 	nodes = snd_hda_get_sub_nodes(codec, codec->core.afg, &nid);
1772 	if (!nid || nodes < 0) {
1773 		codec_warn(codec, "HDMI: failed to get afg sub nodes\n");
1774 		return -EINVAL;
1775 	}
1776 
1777 	for (i = 0; i < nodes; i++, nid++) {
1778 		unsigned int caps;
1779 		unsigned int type;
1780 
1781 		caps = get_wcaps(codec, nid);
1782 		type = get_wcaps_type(caps);
1783 
1784 		if (!(caps & AC_WCAP_DIGITAL))
1785 			continue;
1786 
1787 		switch (type) {
1788 		case AC_WID_AUD_OUT:
1789 			hdmi_add_cvt(codec, nid);
1790 			break;
1791 		case AC_WID_PIN:
1792 			hdmi_add_pin(codec, nid);
1793 			break;
1794 		}
1795 	}
1796 
1797 	return 0;
1798 }
1799 
1800 /*
1801  */
1802 static bool check_non_pcm_per_cvt(struct hda_codec *codec, hda_nid_t cvt_nid)
1803 {
1804 	struct hda_spdif_out *spdif;
1805 	bool non_pcm;
1806 
1807 	mutex_lock(&codec->spdif_mutex);
1808 	spdif = snd_hda_spdif_out_of_nid(codec, cvt_nid);
1809 	/* Add sanity check to pass klockwork check.
1810 	 * This should never happen.
1811 	 */
1812 	if (WARN_ON(spdif == NULL))
1813 		return true;
1814 	non_pcm = !!(spdif->status & IEC958_AES0_NONAUDIO);
1815 	mutex_unlock(&codec->spdif_mutex);
1816 	return non_pcm;
1817 }
1818 
1819 /*
1820  * HDMI callbacks
1821  */
1822 
1823 static int generic_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
1824 					   struct hda_codec *codec,
1825 					   unsigned int stream_tag,
1826 					   unsigned int format,
1827 					   struct snd_pcm_substream *substream)
1828 {
1829 	hda_nid_t cvt_nid = hinfo->nid;
1830 	struct hdmi_spec *spec = codec->spec;
1831 	int pin_idx;
1832 	struct hdmi_spec_per_pin *per_pin;
1833 	hda_nid_t pin_nid;
1834 	struct snd_pcm_runtime *runtime = substream->runtime;
1835 	bool non_pcm;
1836 	int pinctl;
1837 	int err;
1838 
1839 	mutex_lock(&spec->pcm_lock);
1840 	pin_idx = hinfo_to_pin_index(codec, hinfo);
1841 	if (spec->dyn_pcm_assign && pin_idx < 0) {
1842 		/* when dyn_pcm_assign and pcm is not bound to a pin
1843 		 * skip pin setup and return 0 to make audio playback
1844 		 * be ongoing
1845 		 */
1846 		pin_cvt_fixup(codec, NULL, cvt_nid);
1847 		snd_hda_codec_setup_stream(codec, cvt_nid,
1848 					stream_tag, 0, format);
1849 		mutex_unlock(&spec->pcm_lock);
1850 		return 0;
1851 	}
1852 
1853 	if (snd_BUG_ON(pin_idx < 0)) {
1854 		mutex_unlock(&spec->pcm_lock);
1855 		return -EINVAL;
1856 	}
1857 	per_pin = get_pin(spec, pin_idx);
1858 	pin_nid = per_pin->pin_nid;
1859 
1860 	/* Verify pin:cvt selections to avoid silent audio after S3.
1861 	 * After S3, the audio driver restores pin:cvt selections
1862 	 * but this can happen before gfx is ready and such selection
1863 	 * is overlooked by HW. Thus multiple pins can share a same
1864 	 * default convertor and mute control will affect each other,
1865 	 * which can cause a resumed audio playback become silent
1866 	 * after S3.
1867 	 */
1868 	pin_cvt_fixup(codec, per_pin, 0);
1869 
1870 	/* Call sync_audio_rate to set the N/CTS/M manually if necessary */
1871 	/* Todo: add DP1.2 MST audio support later */
1872 	if (codec_has_acomp(codec))
1873 		snd_hdac_sync_audio_rate(&codec->core, pin_nid, per_pin->dev_id,
1874 					 runtime->rate);
1875 
1876 	non_pcm = check_non_pcm_per_cvt(codec, cvt_nid);
1877 	mutex_lock(&per_pin->lock);
1878 	per_pin->channels = substream->runtime->channels;
1879 	per_pin->setup = true;
1880 
1881 	hdmi_setup_audio_infoframe(codec, per_pin, non_pcm);
1882 	mutex_unlock(&per_pin->lock);
1883 	if (spec->dyn_pin_out) {
1884 		pinctl = snd_hda_codec_read(codec, pin_nid, 0,
1885 					    AC_VERB_GET_PIN_WIDGET_CONTROL, 0);
1886 		snd_hda_codec_write(codec, pin_nid, 0,
1887 				    AC_VERB_SET_PIN_WIDGET_CONTROL,
1888 				    pinctl | PIN_OUT);
1889 	}
1890 
1891 	/* snd_hda_set_dev_select() has been called before */
1892 	err = spec->ops.setup_stream(codec, cvt_nid, pin_nid,
1893 				 stream_tag, format);
1894 	mutex_unlock(&spec->pcm_lock);
1895 	return err;
1896 }
1897 
1898 static int generic_hdmi_playback_pcm_cleanup(struct hda_pcm_stream *hinfo,
1899 					     struct hda_codec *codec,
1900 					     struct snd_pcm_substream *substream)
1901 {
1902 	snd_hda_codec_cleanup_stream(codec, hinfo->nid);
1903 	return 0;
1904 }
1905 
1906 static int hdmi_pcm_close(struct hda_pcm_stream *hinfo,
1907 			  struct hda_codec *codec,
1908 			  struct snd_pcm_substream *substream)
1909 {
1910 	struct hdmi_spec *spec = codec->spec;
1911 	int cvt_idx, pin_idx, pcm_idx;
1912 	struct hdmi_spec_per_cvt *per_cvt;
1913 	struct hdmi_spec_per_pin *per_pin;
1914 	int pinctl;
1915 
1916 	if (hinfo->nid) {
1917 		pcm_idx = hinfo_to_pcm_index(codec, hinfo);
1918 		if (snd_BUG_ON(pcm_idx < 0))
1919 			return -EINVAL;
1920 		cvt_idx = cvt_nid_to_cvt_index(codec, hinfo->nid);
1921 		if (snd_BUG_ON(cvt_idx < 0))
1922 			return -EINVAL;
1923 		per_cvt = get_cvt(spec, cvt_idx);
1924 
1925 		snd_BUG_ON(!per_cvt->assigned);
1926 		per_cvt->assigned = 0;
1927 		hinfo->nid = 0;
1928 
1929 		mutex_lock(&spec->pcm_lock);
1930 		snd_hda_spdif_ctls_unassign(codec, pcm_idx);
1931 		clear_bit(pcm_idx, &spec->pcm_in_use);
1932 		pin_idx = hinfo_to_pin_index(codec, hinfo);
1933 		if (spec->dyn_pcm_assign && pin_idx < 0) {
1934 			mutex_unlock(&spec->pcm_lock);
1935 			return 0;
1936 		}
1937 
1938 		if (snd_BUG_ON(pin_idx < 0)) {
1939 			mutex_unlock(&spec->pcm_lock);
1940 			return -EINVAL;
1941 		}
1942 		per_pin = get_pin(spec, pin_idx);
1943 
1944 		if (spec->dyn_pin_out) {
1945 			pinctl = snd_hda_codec_read(codec, per_pin->pin_nid, 0,
1946 					AC_VERB_GET_PIN_WIDGET_CONTROL, 0);
1947 			snd_hda_codec_write(codec, per_pin->pin_nid, 0,
1948 					    AC_VERB_SET_PIN_WIDGET_CONTROL,
1949 					    pinctl & ~PIN_OUT);
1950 		}
1951 
1952 		mutex_lock(&per_pin->lock);
1953 		per_pin->chmap_set = false;
1954 		memset(per_pin->chmap, 0, sizeof(per_pin->chmap));
1955 
1956 		per_pin->setup = false;
1957 		per_pin->channels = 0;
1958 		mutex_unlock(&per_pin->lock);
1959 		mutex_unlock(&spec->pcm_lock);
1960 	}
1961 
1962 	return 0;
1963 }
1964 
1965 static const struct hda_pcm_ops generic_ops = {
1966 	.open = hdmi_pcm_open,
1967 	.close = hdmi_pcm_close,
1968 	.prepare = generic_hdmi_playback_pcm_prepare,
1969 	.cleanup = generic_hdmi_playback_pcm_cleanup,
1970 };
1971 
1972 static int hdmi_get_spk_alloc(struct hdac_device *hdac, int pcm_idx)
1973 {
1974 	struct hda_codec *codec = container_of(hdac, struct hda_codec, core);
1975 	struct hdmi_spec *spec = codec->spec;
1976 	struct hdmi_spec_per_pin *per_pin = pcm_idx_to_pin(spec, pcm_idx);
1977 
1978 	if (!per_pin)
1979 		return 0;
1980 
1981 	return per_pin->sink_eld.info.spk_alloc;
1982 }
1983 
1984 static void hdmi_get_chmap(struct hdac_device *hdac, int pcm_idx,
1985 					unsigned char *chmap)
1986 {
1987 	struct hda_codec *codec = container_of(hdac, struct hda_codec, core);
1988 	struct hdmi_spec *spec = codec->spec;
1989 	struct hdmi_spec_per_pin *per_pin = pcm_idx_to_pin(spec, pcm_idx);
1990 
1991 	/* chmap is already set to 0 in caller */
1992 	if (!per_pin)
1993 		return;
1994 
1995 	memcpy(chmap, per_pin->chmap, ARRAY_SIZE(per_pin->chmap));
1996 }
1997 
1998 static void hdmi_set_chmap(struct hdac_device *hdac, int pcm_idx,
1999 				unsigned char *chmap, int prepared)
2000 {
2001 	struct hda_codec *codec = container_of(hdac, struct hda_codec, core);
2002 	struct hdmi_spec *spec = codec->spec;
2003 	struct hdmi_spec_per_pin *per_pin = pcm_idx_to_pin(spec, pcm_idx);
2004 
2005 	if (!per_pin)
2006 		return;
2007 	mutex_lock(&per_pin->lock);
2008 	per_pin->chmap_set = true;
2009 	memcpy(per_pin->chmap, chmap, ARRAY_SIZE(per_pin->chmap));
2010 	if (prepared)
2011 		hdmi_setup_audio_infoframe(codec, per_pin, per_pin->non_pcm);
2012 	mutex_unlock(&per_pin->lock);
2013 }
2014 
2015 static bool is_hdmi_pcm_attached(struct hdac_device *hdac, int pcm_idx)
2016 {
2017 	struct hda_codec *codec = container_of(hdac, struct hda_codec, core);
2018 	struct hdmi_spec *spec = codec->spec;
2019 	struct hdmi_spec_per_pin *per_pin = pcm_idx_to_pin(spec, pcm_idx);
2020 
2021 	return per_pin ? true:false;
2022 }
2023 
2024 static int generic_hdmi_build_pcms(struct hda_codec *codec)
2025 {
2026 	struct hdmi_spec *spec = codec->spec;
2027 	int idx;
2028 
2029 	/*
2030 	 * for non-mst mode, pcm number is the same as before
2031 	 * for DP MST mode, pcm number is (nid number + dev_num - 1)
2032 	 *  dev_num is the device entry number in a pin
2033 	 *
2034 	 */
2035 	for (idx = 0; idx < spec->num_nids + spec->dev_num - 1; idx++) {
2036 		struct hda_pcm *info;
2037 		struct hda_pcm_stream *pstr;
2038 
2039 		info = snd_hda_codec_pcm_new(codec, "HDMI %d", idx);
2040 		if (!info)
2041 			return -ENOMEM;
2042 
2043 		spec->pcm_rec[idx].pcm = info;
2044 		spec->pcm_used++;
2045 		info->pcm_type = HDA_PCM_TYPE_HDMI;
2046 		info->own_chmap = true;
2047 
2048 		pstr = &info->stream[SNDRV_PCM_STREAM_PLAYBACK];
2049 		pstr->substreams = 1;
2050 		pstr->ops = generic_ops;
2051 		/* pcm number is less than 16 */
2052 		if (spec->pcm_used >= 16)
2053 			break;
2054 		/* other pstr fields are set in open */
2055 	}
2056 
2057 	return 0;
2058 }
2059 
2060 static void free_hdmi_jack_priv(struct snd_jack *jack)
2061 {
2062 	struct hdmi_pcm *pcm = jack->private_data;
2063 
2064 	pcm->jack = NULL;
2065 }
2066 
2067 static int add_hdmi_jack_kctl(struct hda_codec *codec,
2068 			       struct hdmi_spec *spec,
2069 			       int pcm_idx,
2070 			       const char *name)
2071 {
2072 	struct snd_jack *jack;
2073 	int err;
2074 
2075 	err = snd_jack_new(codec->card, name, SND_JACK_AVOUT, &jack,
2076 			   true, false);
2077 	if (err < 0)
2078 		return err;
2079 
2080 	spec->pcm_rec[pcm_idx].jack = jack;
2081 	jack->private_data = &spec->pcm_rec[pcm_idx];
2082 	jack->private_free = free_hdmi_jack_priv;
2083 	return 0;
2084 }
2085 
2086 static int generic_hdmi_build_jack(struct hda_codec *codec, int pcm_idx)
2087 {
2088 	char hdmi_str[32] = "HDMI/DP";
2089 	struct hdmi_spec *spec = codec->spec;
2090 	struct hdmi_spec_per_pin *per_pin;
2091 	struct hda_jack_tbl *jack;
2092 	int pcmdev = get_pcm_rec(spec, pcm_idx)->device;
2093 	bool phantom_jack;
2094 	int ret;
2095 
2096 	if (pcmdev > 0)
2097 		sprintf(hdmi_str + strlen(hdmi_str), ",pcm=%d", pcmdev);
2098 
2099 	if (spec->dyn_pcm_assign)
2100 		return add_hdmi_jack_kctl(codec, spec, pcm_idx, hdmi_str);
2101 
2102 	/* for !dyn_pcm_assign, we still use hda_jack for compatibility */
2103 	/* if !dyn_pcm_assign, it must be non-MST mode.
2104 	 * This means pcms and pins are statically mapped.
2105 	 * And pcm_idx is pin_idx.
2106 	 */
2107 	per_pin = get_pin(spec, pcm_idx);
2108 	phantom_jack = !is_jack_detectable(codec, per_pin->pin_nid);
2109 	if (phantom_jack)
2110 		strncat(hdmi_str, " Phantom",
2111 			sizeof(hdmi_str) - strlen(hdmi_str) - 1);
2112 	ret = snd_hda_jack_add_kctl(codec, per_pin->pin_nid, hdmi_str,
2113 				    phantom_jack);
2114 	if (ret < 0)
2115 		return ret;
2116 	jack = snd_hda_jack_tbl_get(codec, per_pin->pin_nid);
2117 	if (jack == NULL)
2118 		return 0;
2119 	/* assign jack->jack to pcm_rec[].jack to
2120 	 * align with dyn_pcm_assign mode
2121 	 */
2122 	spec->pcm_rec[pcm_idx].jack = jack->jack;
2123 	return 0;
2124 }
2125 
2126 static int generic_hdmi_build_controls(struct hda_codec *codec)
2127 {
2128 	struct hdmi_spec *spec = codec->spec;
2129 	int err;
2130 	int pin_idx, pcm_idx;
2131 
2132 
2133 	for (pcm_idx = 0; pcm_idx < spec->pcm_used; pcm_idx++) {
2134 		err = generic_hdmi_build_jack(codec, pcm_idx);
2135 		if (err < 0)
2136 			return err;
2137 
2138 		/* create the spdif for each pcm
2139 		 * pin will be bound when monitor is connected
2140 		 */
2141 		if (spec->dyn_pcm_assign)
2142 			err = snd_hda_create_dig_out_ctls(codec,
2143 					  0, spec->cvt_nids[0],
2144 					  HDA_PCM_TYPE_HDMI);
2145 		else {
2146 			struct hdmi_spec_per_pin *per_pin =
2147 				get_pin(spec, pcm_idx);
2148 			err = snd_hda_create_dig_out_ctls(codec,
2149 						  per_pin->pin_nid,
2150 						  per_pin->mux_nids[0],
2151 						  HDA_PCM_TYPE_HDMI);
2152 		}
2153 		if (err < 0)
2154 			return err;
2155 		snd_hda_spdif_ctls_unassign(codec, pcm_idx);
2156 
2157 		/* add control for ELD Bytes */
2158 		err = hdmi_create_eld_ctl(codec, pcm_idx,
2159 					get_pcm_rec(spec, pcm_idx)->device);
2160 		if (err < 0)
2161 			return err;
2162 	}
2163 
2164 	for (pin_idx = 0; pin_idx < spec->num_pins; pin_idx++) {
2165 		struct hdmi_spec_per_pin *per_pin = get_pin(spec, pin_idx);
2166 
2167 		hdmi_present_sense(per_pin, 0);
2168 	}
2169 
2170 	/* add channel maps */
2171 	for (pcm_idx = 0; pcm_idx < spec->pcm_used; pcm_idx++) {
2172 		struct hda_pcm *pcm;
2173 
2174 		pcm = get_pcm_rec(spec, pcm_idx);
2175 		if (!pcm || !pcm->pcm)
2176 			break;
2177 		err = snd_hdac_add_chmap_ctls(pcm->pcm, pcm_idx, &spec->chmap);
2178 		if (err < 0)
2179 			return err;
2180 	}
2181 
2182 	return 0;
2183 }
2184 
2185 static int generic_hdmi_init_per_pins(struct hda_codec *codec)
2186 {
2187 	struct hdmi_spec *spec = codec->spec;
2188 	int pin_idx;
2189 
2190 	for (pin_idx = 0; pin_idx < spec->num_pins; pin_idx++) {
2191 		struct hdmi_spec_per_pin *per_pin = get_pin(spec, pin_idx);
2192 
2193 		per_pin->codec = codec;
2194 		mutex_init(&per_pin->lock);
2195 		INIT_DELAYED_WORK(&per_pin->work, hdmi_repoll_eld);
2196 		eld_proc_new(per_pin, pin_idx);
2197 	}
2198 	return 0;
2199 }
2200 
2201 static int generic_hdmi_init(struct hda_codec *codec)
2202 {
2203 	struct hdmi_spec *spec = codec->spec;
2204 	int pin_idx;
2205 
2206 	for (pin_idx = 0; pin_idx < spec->num_pins; pin_idx++) {
2207 		struct hdmi_spec_per_pin *per_pin = get_pin(spec, pin_idx);
2208 		hda_nid_t pin_nid = per_pin->pin_nid;
2209 		int dev_id = per_pin->dev_id;
2210 
2211 		snd_hda_set_dev_select(codec, pin_nid, dev_id);
2212 		hdmi_init_pin(codec, pin_nid);
2213 		if (!codec_has_acomp(codec))
2214 			snd_hda_jack_detect_enable_callback(codec, pin_nid,
2215 				codec->jackpoll_interval > 0 ?
2216 				jack_callback : NULL);
2217 	}
2218 	return 0;
2219 }
2220 
2221 static void hdmi_array_init(struct hdmi_spec *spec, int nums)
2222 {
2223 	snd_array_init(&spec->pins, sizeof(struct hdmi_spec_per_pin), nums);
2224 	snd_array_init(&spec->cvts, sizeof(struct hdmi_spec_per_cvt), nums);
2225 }
2226 
2227 static void hdmi_array_free(struct hdmi_spec *spec)
2228 {
2229 	snd_array_free(&spec->pins);
2230 	snd_array_free(&spec->cvts);
2231 }
2232 
2233 static void generic_spec_free(struct hda_codec *codec)
2234 {
2235 	struct hdmi_spec *spec = codec->spec;
2236 
2237 	if (spec) {
2238 		hdmi_array_free(spec);
2239 		kfree(spec);
2240 		codec->spec = NULL;
2241 	}
2242 	codec->dp_mst = false;
2243 }
2244 
2245 static void generic_hdmi_free(struct hda_codec *codec)
2246 {
2247 	struct hdmi_spec *spec = codec->spec;
2248 	int pin_idx, pcm_idx;
2249 
2250 	if (codec_has_acomp(codec))
2251 		snd_hdac_i915_register_notifier(NULL);
2252 
2253 	for (pin_idx = 0; pin_idx < spec->num_pins; pin_idx++) {
2254 		struct hdmi_spec_per_pin *per_pin = get_pin(spec, pin_idx);
2255 		cancel_delayed_work_sync(&per_pin->work);
2256 		eld_proc_free(per_pin);
2257 	}
2258 
2259 	for (pcm_idx = 0; pcm_idx < spec->pcm_used; pcm_idx++) {
2260 		if (spec->pcm_rec[pcm_idx].jack == NULL)
2261 			continue;
2262 		if (spec->dyn_pcm_assign)
2263 			snd_device_free(codec->card,
2264 					spec->pcm_rec[pcm_idx].jack);
2265 		else
2266 			spec->pcm_rec[pcm_idx].jack = NULL;
2267 	}
2268 
2269 	generic_spec_free(codec);
2270 }
2271 
2272 #ifdef CONFIG_PM
2273 static int generic_hdmi_resume(struct hda_codec *codec)
2274 {
2275 	struct hdmi_spec *spec = codec->spec;
2276 	int pin_idx;
2277 
2278 	codec->patch_ops.init(codec);
2279 	regcache_sync(codec->core.regmap);
2280 
2281 	for (pin_idx = 0; pin_idx < spec->num_pins; pin_idx++) {
2282 		struct hdmi_spec_per_pin *per_pin = get_pin(spec, pin_idx);
2283 		hdmi_present_sense(per_pin, 1);
2284 	}
2285 	return 0;
2286 }
2287 #endif
2288 
2289 static const struct hda_codec_ops generic_hdmi_patch_ops = {
2290 	.init			= generic_hdmi_init,
2291 	.free			= generic_hdmi_free,
2292 	.build_pcms		= generic_hdmi_build_pcms,
2293 	.build_controls		= generic_hdmi_build_controls,
2294 	.unsol_event		= hdmi_unsol_event,
2295 #ifdef CONFIG_PM
2296 	.resume			= generic_hdmi_resume,
2297 #endif
2298 };
2299 
2300 static const struct hdmi_ops generic_standard_hdmi_ops = {
2301 	.pin_get_eld				= snd_hdmi_get_eld,
2302 	.pin_setup_infoframe			= hdmi_pin_setup_infoframe,
2303 	.pin_hbr_setup				= hdmi_pin_hbr_setup,
2304 	.setup_stream				= hdmi_setup_stream,
2305 };
2306 
2307 /* allocate codec->spec and assign/initialize generic parser ops */
2308 static int alloc_generic_hdmi(struct hda_codec *codec)
2309 {
2310 	struct hdmi_spec *spec;
2311 
2312 	spec = kzalloc(sizeof(*spec), GFP_KERNEL);
2313 	if (!spec)
2314 		return -ENOMEM;
2315 
2316 	spec->ops = generic_standard_hdmi_ops;
2317 	spec->dev_num = 1;	/* initialize to 1 */
2318 	mutex_init(&spec->pcm_lock);
2319 	snd_hdac_register_chmap_ops(&codec->core, &spec->chmap);
2320 
2321 	spec->chmap.ops.get_chmap = hdmi_get_chmap;
2322 	spec->chmap.ops.set_chmap = hdmi_set_chmap;
2323 	spec->chmap.ops.is_pcm_attached = is_hdmi_pcm_attached;
2324 	spec->chmap.ops.get_spk_alloc = hdmi_get_spk_alloc,
2325 
2326 	codec->spec = spec;
2327 	hdmi_array_init(spec, 4);
2328 
2329 	codec->patch_ops = generic_hdmi_patch_ops;
2330 
2331 	return 0;
2332 }
2333 
2334 /* generic HDMI parser */
2335 static int patch_generic_hdmi(struct hda_codec *codec)
2336 {
2337 	int err;
2338 
2339 	err = alloc_generic_hdmi(codec);
2340 	if (err < 0)
2341 		return err;
2342 
2343 	err = hdmi_parse_codec(codec);
2344 	if (err < 0) {
2345 		generic_spec_free(codec);
2346 		return err;
2347 	}
2348 
2349 	generic_hdmi_init_per_pins(codec);
2350 	return 0;
2351 }
2352 
2353 /*
2354  * Intel codec parsers and helpers
2355  */
2356 
2357 static void intel_haswell_fixup_connect_list(struct hda_codec *codec,
2358 					     hda_nid_t nid)
2359 {
2360 	struct hdmi_spec *spec = codec->spec;
2361 	hda_nid_t conns[4];
2362 	int nconns;
2363 
2364 	nconns = snd_hda_get_connections(codec, nid, conns, ARRAY_SIZE(conns));
2365 	if (nconns == spec->num_cvts &&
2366 	    !memcmp(conns, spec->cvt_nids, spec->num_cvts * sizeof(hda_nid_t)))
2367 		return;
2368 
2369 	/* override pins connection list */
2370 	codec_dbg(codec, "hdmi: haswell: override pin connection 0x%x\n", nid);
2371 	snd_hda_override_conn_list(codec, nid, spec->num_cvts, spec->cvt_nids);
2372 }
2373 
2374 #define INTEL_VENDOR_NID 0x08
2375 #define INTEL_GLK_VENDOR_NID 0x0B
2376 #define INTEL_GET_VENDOR_VERB 0xf81
2377 #define INTEL_SET_VENDOR_VERB 0x781
2378 #define INTEL_EN_DP12			0x02 /* enable DP 1.2 features */
2379 #define INTEL_EN_ALL_PIN_CVTS	0x01 /* enable 2nd & 3rd pins and convertors */
2380 
2381 static void intel_haswell_enable_all_pins(struct hda_codec *codec,
2382 					  bool update_tree)
2383 {
2384 	unsigned int vendor_param;
2385 	struct hdmi_spec *spec = codec->spec;
2386 
2387 	vendor_param = snd_hda_codec_read(codec, spec->vendor_nid, 0,
2388 				INTEL_GET_VENDOR_VERB, 0);
2389 	if (vendor_param == -1 || vendor_param & INTEL_EN_ALL_PIN_CVTS)
2390 		return;
2391 
2392 	vendor_param |= INTEL_EN_ALL_PIN_CVTS;
2393 	vendor_param = snd_hda_codec_read(codec, spec->vendor_nid, 0,
2394 				INTEL_SET_VENDOR_VERB, vendor_param);
2395 	if (vendor_param == -1)
2396 		return;
2397 
2398 	if (update_tree)
2399 		snd_hda_codec_update_widgets(codec);
2400 }
2401 
2402 static void intel_haswell_fixup_enable_dp12(struct hda_codec *codec)
2403 {
2404 	unsigned int vendor_param;
2405 	struct hdmi_spec *spec = codec->spec;
2406 
2407 	vendor_param = snd_hda_codec_read(codec, spec->vendor_nid, 0,
2408 				INTEL_GET_VENDOR_VERB, 0);
2409 	if (vendor_param == -1 || vendor_param & INTEL_EN_DP12)
2410 		return;
2411 
2412 	/* enable DP1.2 mode */
2413 	vendor_param |= INTEL_EN_DP12;
2414 	snd_hdac_regmap_add_vendor_verb(&codec->core, INTEL_SET_VENDOR_VERB);
2415 	snd_hda_codec_write_cache(codec, spec->vendor_nid, 0,
2416 				INTEL_SET_VENDOR_VERB, vendor_param);
2417 }
2418 
2419 /* Haswell needs to re-issue the vendor-specific verbs before turning to D0.
2420  * Otherwise you may get severe h/w communication errors.
2421  */
2422 static void haswell_set_power_state(struct hda_codec *codec, hda_nid_t fg,
2423 				unsigned int power_state)
2424 {
2425 	if (power_state == AC_PWRST_D0) {
2426 		intel_haswell_enable_all_pins(codec, false);
2427 		intel_haswell_fixup_enable_dp12(codec);
2428 	}
2429 
2430 	snd_hda_codec_read(codec, fg, 0, AC_VERB_SET_POWER_STATE, power_state);
2431 	snd_hda_codec_set_power_to_all(codec, fg, power_state);
2432 }
2433 
2434 static void intel_pin_eld_notify(void *audio_ptr, int port, int pipe)
2435 {
2436 	struct hda_codec *codec = audio_ptr;
2437 	int pin_nid;
2438 	int dev_id = pipe;
2439 
2440 	/* we assume only from port-B to port-D */
2441 	if (port < 1 || port > 3)
2442 		return;
2443 
2444 	switch (codec->core.vendor_id) {
2445 	case 0x80860054: /* ILK */
2446 	case 0x80862804: /* ILK */
2447 	case 0x80862882: /* VLV */
2448 		pin_nid = port + 0x03;
2449 		break;
2450 	default:
2451 		pin_nid = port + 0x04;
2452 		break;
2453 	}
2454 
2455 	/* skip notification during system suspend (but not in runtime PM);
2456 	 * the state will be updated at resume
2457 	 */
2458 	if (snd_power_get_state(codec->card) != SNDRV_CTL_POWER_D0)
2459 		return;
2460 	/* ditto during suspend/resume process itself */
2461 	if (atomic_read(&(codec)->core.in_pm))
2462 		return;
2463 
2464 	snd_hdac_i915_set_bclk(&codec->bus->core);
2465 	check_presence_and_report(codec, pin_nid, dev_id);
2466 }
2467 
2468 /* register i915 component pin_eld_notify callback */
2469 static void register_i915_notifier(struct hda_codec *codec)
2470 {
2471 	struct hdmi_spec *spec = codec->spec;
2472 
2473 	spec->use_acomp_notifier = true;
2474 	spec->i915_audio_ops.audio_ptr = codec;
2475 	/* intel_audio_codec_enable() or intel_audio_codec_disable()
2476 	 * will call pin_eld_notify with using audio_ptr pointer
2477 	 * We need make sure audio_ptr is really setup
2478 	 */
2479 	wmb();
2480 	spec->i915_audio_ops.pin_eld_notify = intel_pin_eld_notify;
2481 	snd_hdac_i915_register_notifier(&spec->i915_audio_ops);
2482 }
2483 
2484 /* setup_stream ops override for HSW+ */
2485 static int i915_hsw_setup_stream(struct hda_codec *codec, hda_nid_t cvt_nid,
2486 				 hda_nid_t pin_nid, u32 stream_tag, int format)
2487 {
2488 	haswell_verify_D0(codec, cvt_nid, pin_nid);
2489 	return hdmi_setup_stream(codec, cvt_nid, pin_nid, stream_tag, format);
2490 }
2491 
2492 /* pin_cvt_fixup ops override for HSW+ and VLV+ */
2493 static void i915_pin_cvt_fixup(struct hda_codec *codec,
2494 			       struct hdmi_spec_per_pin *per_pin,
2495 			       hda_nid_t cvt_nid)
2496 {
2497 	if (per_pin) {
2498 		snd_hda_set_dev_select(codec, per_pin->pin_nid,
2499 			       per_pin->dev_id);
2500 		intel_verify_pin_cvt_connect(codec, per_pin);
2501 		intel_not_share_assigned_cvt(codec, per_pin->pin_nid,
2502 				     per_pin->dev_id, per_pin->mux_idx);
2503 	} else {
2504 		intel_not_share_assigned_cvt_nid(codec, 0, 0, cvt_nid);
2505 	}
2506 }
2507 
2508 /* precondition and allocation for Intel codecs */
2509 static int alloc_intel_hdmi(struct hda_codec *codec)
2510 {
2511 	/* requires i915 binding */
2512 	if (!codec->bus->core.audio_component) {
2513 		codec_info(codec, "No i915 binding for Intel HDMI/DP codec\n");
2514 		return -ENODEV;
2515 	}
2516 
2517 	return alloc_generic_hdmi(codec);
2518 }
2519 
2520 /* parse and post-process for Intel codecs */
2521 static int parse_intel_hdmi(struct hda_codec *codec)
2522 {
2523 	int err;
2524 
2525 	err = hdmi_parse_codec(codec);
2526 	if (err < 0) {
2527 		generic_spec_free(codec);
2528 		return err;
2529 	}
2530 
2531 	generic_hdmi_init_per_pins(codec);
2532 	register_i915_notifier(codec);
2533 	return 0;
2534 }
2535 
2536 /* Intel Haswell and onwards; audio component with eld notifier */
2537 static int intel_hsw_common_init(struct hda_codec *codec, hda_nid_t vendor_nid)
2538 {
2539 	struct hdmi_spec *spec;
2540 	int err;
2541 
2542 	err = alloc_intel_hdmi(codec);
2543 	if (err < 0)
2544 		return err;
2545 	spec = codec->spec;
2546 	codec->dp_mst = true;
2547 	spec->dyn_pcm_assign = true;
2548 	spec->vendor_nid = vendor_nid;
2549 
2550 	intel_haswell_enable_all_pins(codec, true);
2551 	intel_haswell_fixup_enable_dp12(codec);
2552 
2553 	/* For Haswell/Broadwell, the controller is also in the power well and
2554 	 * can cover the codec power request, and so need not set this flag.
2555 	 */
2556 	if (!is_haswell(codec) && !is_broadwell(codec))
2557 		codec->core.link_power_control = 1;
2558 
2559 	codec->patch_ops.set_power_state = haswell_set_power_state;
2560 	codec->depop_delay = 0;
2561 	codec->auto_runtime_pm = 1;
2562 
2563 	spec->ops.setup_stream = i915_hsw_setup_stream;
2564 	spec->ops.pin_cvt_fixup = i915_pin_cvt_fixup;
2565 
2566 	return parse_intel_hdmi(codec);
2567 }
2568 
2569 static int patch_i915_hsw_hdmi(struct hda_codec *codec)
2570 {
2571 	return intel_hsw_common_init(codec, INTEL_VENDOR_NID);
2572 }
2573 
2574 static int patch_i915_glk_hdmi(struct hda_codec *codec)
2575 {
2576 	return intel_hsw_common_init(codec, INTEL_GLK_VENDOR_NID);
2577 }
2578 
2579 /* Intel Baytrail and Braswell; with eld notifier */
2580 static int patch_i915_byt_hdmi(struct hda_codec *codec)
2581 {
2582 	struct hdmi_spec *spec;
2583 	int err;
2584 
2585 	err = alloc_intel_hdmi(codec);
2586 	if (err < 0)
2587 		return err;
2588 	spec = codec->spec;
2589 
2590 	/* For Valleyview/Cherryview, only the display codec is in the display
2591 	 * power well and can use link_power ops to request/release the power.
2592 	 */
2593 	codec->core.link_power_control = 1;
2594 
2595 	codec->depop_delay = 0;
2596 	codec->auto_runtime_pm = 1;
2597 
2598 	spec->ops.pin_cvt_fixup = i915_pin_cvt_fixup;
2599 
2600 	return parse_intel_hdmi(codec);
2601 }
2602 
2603 /* Intel IronLake, SandyBridge and IvyBridge; with eld notifier */
2604 static int patch_i915_cpt_hdmi(struct hda_codec *codec)
2605 {
2606 	int err;
2607 
2608 	err = alloc_intel_hdmi(codec);
2609 	if (err < 0)
2610 		return err;
2611 	return parse_intel_hdmi(codec);
2612 }
2613 
2614 /*
2615  * Shared non-generic implementations
2616  */
2617 
2618 static int simple_playback_build_pcms(struct hda_codec *codec)
2619 {
2620 	struct hdmi_spec *spec = codec->spec;
2621 	struct hda_pcm *info;
2622 	unsigned int chans;
2623 	struct hda_pcm_stream *pstr;
2624 	struct hdmi_spec_per_cvt *per_cvt;
2625 
2626 	per_cvt = get_cvt(spec, 0);
2627 	chans = get_wcaps(codec, per_cvt->cvt_nid);
2628 	chans = get_wcaps_channels(chans);
2629 
2630 	info = snd_hda_codec_pcm_new(codec, "HDMI 0");
2631 	if (!info)
2632 		return -ENOMEM;
2633 	spec->pcm_rec[0].pcm = info;
2634 	info->pcm_type = HDA_PCM_TYPE_HDMI;
2635 	pstr = &info->stream[SNDRV_PCM_STREAM_PLAYBACK];
2636 	*pstr = spec->pcm_playback;
2637 	pstr->nid = per_cvt->cvt_nid;
2638 	if (pstr->channels_max <= 2 && chans && chans <= 16)
2639 		pstr->channels_max = chans;
2640 
2641 	return 0;
2642 }
2643 
2644 /* unsolicited event for jack sensing */
2645 static void simple_hdmi_unsol_event(struct hda_codec *codec,
2646 				    unsigned int res)
2647 {
2648 	snd_hda_jack_set_dirty_all(codec);
2649 	snd_hda_jack_report_sync(codec);
2650 }
2651 
2652 /* generic_hdmi_build_jack can be used for simple_hdmi, too,
2653  * as long as spec->pins[] is set correctly
2654  */
2655 #define simple_hdmi_build_jack	generic_hdmi_build_jack
2656 
2657 static int simple_playback_build_controls(struct hda_codec *codec)
2658 {
2659 	struct hdmi_spec *spec = codec->spec;
2660 	struct hdmi_spec_per_cvt *per_cvt;
2661 	int err;
2662 
2663 	per_cvt = get_cvt(spec, 0);
2664 	err = snd_hda_create_dig_out_ctls(codec, per_cvt->cvt_nid,
2665 					  per_cvt->cvt_nid,
2666 					  HDA_PCM_TYPE_HDMI);
2667 	if (err < 0)
2668 		return err;
2669 	return simple_hdmi_build_jack(codec, 0);
2670 }
2671 
2672 static int simple_playback_init(struct hda_codec *codec)
2673 {
2674 	struct hdmi_spec *spec = codec->spec;
2675 	struct hdmi_spec_per_pin *per_pin = get_pin(spec, 0);
2676 	hda_nid_t pin = per_pin->pin_nid;
2677 
2678 	snd_hda_codec_write(codec, pin, 0,
2679 			    AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT);
2680 	/* some codecs require to unmute the pin */
2681 	if (get_wcaps(codec, pin) & AC_WCAP_OUT_AMP)
2682 		snd_hda_codec_write(codec, pin, 0, AC_VERB_SET_AMP_GAIN_MUTE,
2683 				    AMP_OUT_UNMUTE);
2684 	snd_hda_jack_detect_enable(codec, pin);
2685 	return 0;
2686 }
2687 
2688 static void simple_playback_free(struct hda_codec *codec)
2689 {
2690 	struct hdmi_spec *spec = codec->spec;
2691 
2692 	hdmi_array_free(spec);
2693 	kfree(spec);
2694 }
2695 
2696 /*
2697  * Nvidia specific implementations
2698  */
2699 
2700 #define Nv_VERB_SET_Channel_Allocation          0xF79
2701 #define Nv_VERB_SET_Info_Frame_Checksum         0xF7A
2702 #define Nv_VERB_SET_Audio_Protection_On         0xF98
2703 #define Nv_VERB_SET_Audio_Protection_Off        0xF99
2704 
2705 #define nvhdmi_master_con_nid_7x	0x04
2706 #define nvhdmi_master_pin_nid_7x	0x05
2707 
2708 static const hda_nid_t nvhdmi_con_nids_7x[4] = {
2709 	/*front, rear, clfe, rear_surr */
2710 	0x6, 0x8, 0xa, 0xc,
2711 };
2712 
2713 static const struct hda_verb nvhdmi_basic_init_7x_2ch[] = {
2714 	/* set audio protect on */
2715 	{ 0x1, Nv_VERB_SET_Audio_Protection_On, 0x1},
2716 	/* enable digital output on pin widget */
2717 	{ 0x5, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT | 0x5 },
2718 	{} /* terminator */
2719 };
2720 
2721 static const struct hda_verb nvhdmi_basic_init_7x_8ch[] = {
2722 	/* set audio protect on */
2723 	{ 0x1, Nv_VERB_SET_Audio_Protection_On, 0x1},
2724 	/* enable digital output on pin widget */
2725 	{ 0x5, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT | 0x5 },
2726 	{ 0x7, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT | 0x5 },
2727 	{ 0x9, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT | 0x5 },
2728 	{ 0xb, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT | 0x5 },
2729 	{ 0xd, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT | 0x5 },
2730 	{} /* terminator */
2731 };
2732 
2733 #ifdef LIMITED_RATE_FMT_SUPPORT
2734 /* support only the safe format and rate */
2735 #define SUPPORTED_RATES		SNDRV_PCM_RATE_48000
2736 #define SUPPORTED_MAXBPS	16
2737 #define SUPPORTED_FORMATS	SNDRV_PCM_FMTBIT_S16_LE
2738 #else
2739 /* support all rates and formats */
2740 #define SUPPORTED_RATES \
2741 	(SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\
2742 	SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 |\
2743 	 SNDRV_PCM_RATE_192000)
2744 #define SUPPORTED_MAXBPS	24
2745 #define SUPPORTED_FORMATS \
2746 	(SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE)
2747 #endif
2748 
2749 static int nvhdmi_7x_init_2ch(struct hda_codec *codec)
2750 {
2751 	snd_hda_sequence_write(codec, nvhdmi_basic_init_7x_2ch);
2752 	return 0;
2753 }
2754 
2755 static int nvhdmi_7x_init_8ch(struct hda_codec *codec)
2756 {
2757 	snd_hda_sequence_write(codec, nvhdmi_basic_init_7x_8ch);
2758 	return 0;
2759 }
2760 
2761 static const unsigned int channels_2_6_8[] = {
2762 	2, 6, 8
2763 };
2764 
2765 static const unsigned int channels_2_8[] = {
2766 	2, 8
2767 };
2768 
2769 static const struct snd_pcm_hw_constraint_list hw_constraints_2_6_8_channels = {
2770 	.count = ARRAY_SIZE(channels_2_6_8),
2771 	.list = channels_2_6_8,
2772 	.mask = 0,
2773 };
2774 
2775 static const struct snd_pcm_hw_constraint_list hw_constraints_2_8_channels = {
2776 	.count = ARRAY_SIZE(channels_2_8),
2777 	.list = channels_2_8,
2778 	.mask = 0,
2779 };
2780 
2781 static int simple_playback_pcm_open(struct hda_pcm_stream *hinfo,
2782 				    struct hda_codec *codec,
2783 				    struct snd_pcm_substream *substream)
2784 {
2785 	struct hdmi_spec *spec = codec->spec;
2786 	const struct snd_pcm_hw_constraint_list *hw_constraints_channels = NULL;
2787 
2788 	switch (codec->preset->vendor_id) {
2789 	case 0x10de0002:
2790 	case 0x10de0003:
2791 	case 0x10de0005:
2792 	case 0x10de0006:
2793 		hw_constraints_channels = &hw_constraints_2_8_channels;
2794 		break;
2795 	case 0x10de0007:
2796 		hw_constraints_channels = &hw_constraints_2_6_8_channels;
2797 		break;
2798 	default:
2799 		break;
2800 	}
2801 
2802 	if (hw_constraints_channels != NULL) {
2803 		snd_pcm_hw_constraint_list(substream->runtime, 0,
2804 				SNDRV_PCM_HW_PARAM_CHANNELS,
2805 				hw_constraints_channels);
2806 	} else {
2807 		snd_pcm_hw_constraint_step(substream->runtime, 0,
2808 					   SNDRV_PCM_HW_PARAM_CHANNELS, 2);
2809 	}
2810 
2811 	return snd_hda_multi_out_dig_open(codec, &spec->multiout);
2812 }
2813 
2814 static int simple_playback_pcm_close(struct hda_pcm_stream *hinfo,
2815 				     struct hda_codec *codec,
2816 				     struct snd_pcm_substream *substream)
2817 {
2818 	struct hdmi_spec *spec = codec->spec;
2819 	return snd_hda_multi_out_dig_close(codec, &spec->multiout);
2820 }
2821 
2822 static int simple_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
2823 				       struct hda_codec *codec,
2824 				       unsigned int stream_tag,
2825 				       unsigned int format,
2826 				       struct snd_pcm_substream *substream)
2827 {
2828 	struct hdmi_spec *spec = codec->spec;
2829 	return snd_hda_multi_out_dig_prepare(codec, &spec->multiout,
2830 					     stream_tag, format, substream);
2831 }
2832 
2833 static const struct hda_pcm_stream simple_pcm_playback = {
2834 	.substreams = 1,
2835 	.channels_min = 2,
2836 	.channels_max = 2,
2837 	.ops = {
2838 		.open = simple_playback_pcm_open,
2839 		.close = simple_playback_pcm_close,
2840 		.prepare = simple_playback_pcm_prepare
2841 	},
2842 };
2843 
2844 static const struct hda_codec_ops simple_hdmi_patch_ops = {
2845 	.build_controls = simple_playback_build_controls,
2846 	.build_pcms = simple_playback_build_pcms,
2847 	.init = simple_playback_init,
2848 	.free = simple_playback_free,
2849 	.unsol_event = simple_hdmi_unsol_event,
2850 };
2851 
2852 static int patch_simple_hdmi(struct hda_codec *codec,
2853 			     hda_nid_t cvt_nid, hda_nid_t pin_nid)
2854 {
2855 	struct hdmi_spec *spec;
2856 	struct hdmi_spec_per_cvt *per_cvt;
2857 	struct hdmi_spec_per_pin *per_pin;
2858 
2859 	spec = kzalloc(sizeof(*spec), GFP_KERNEL);
2860 	if (!spec)
2861 		return -ENOMEM;
2862 
2863 	codec->spec = spec;
2864 	hdmi_array_init(spec, 1);
2865 
2866 	spec->multiout.num_dacs = 0;  /* no analog */
2867 	spec->multiout.max_channels = 2;
2868 	spec->multiout.dig_out_nid = cvt_nid;
2869 	spec->num_cvts = 1;
2870 	spec->num_pins = 1;
2871 	per_pin = snd_array_new(&spec->pins);
2872 	per_cvt = snd_array_new(&spec->cvts);
2873 	if (!per_pin || !per_cvt) {
2874 		simple_playback_free(codec);
2875 		return -ENOMEM;
2876 	}
2877 	per_cvt->cvt_nid = cvt_nid;
2878 	per_pin->pin_nid = pin_nid;
2879 	spec->pcm_playback = simple_pcm_playback;
2880 
2881 	codec->patch_ops = simple_hdmi_patch_ops;
2882 
2883 	return 0;
2884 }
2885 
2886 static void nvhdmi_8ch_7x_set_info_frame_parameters(struct hda_codec *codec,
2887 						    int channels)
2888 {
2889 	unsigned int chanmask;
2890 	int chan = channels ? (channels - 1) : 1;
2891 
2892 	switch (channels) {
2893 	default:
2894 	case 0:
2895 	case 2:
2896 		chanmask = 0x00;
2897 		break;
2898 	case 4:
2899 		chanmask = 0x08;
2900 		break;
2901 	case 6:
2902 		chanmask = 0x0b;
2903 		break;
2904 	case 8:
2905 		chanmask = 0x13;
2906 		break;
2907 	}
2908 
2909 	/* Set the audio infoframe channel allocation and checksum fields.  The
2910 	 * channel count is computed implicitly by the hardware. */
2911 	snd_hda_codec_write(codec, 0x1, 0,
2912 			Nv_VERB_SET_Channel_Allocation, chanmask);
2913 
2914 	snd_hda_codec_write(codec, 0x1, 0,
2915 			Nv_VERB_SET_Info_Frame_Checksum,
2916 			(0x71 - chan - chanmask));
2917 }
2918 
2919 static int nvhdmi_8ch_7x_pcm_close(struct hda_pcm_stream *hinfo,
2920 				   struct hda_codec *codec,
2921 				   struct snd_pcm_substream *substream)
2922 {
2923 	struct hdmi_spec *spec = codec->spec;
2924 	int i;
2925 
2926 	snd_hda_codec_write(codec, nvhdmi_master_con_nid_7x,
2927 			0, AC_VERB_SET_CHANNEL_STREAMID, 0);
2928 	for (i = 0; i < 4; i++) {
2929 		/* set the stream id */
2930 		snd_hda_codec_write(codec, nvhdmi_con_nids_7x[i], 0,
2931 				AC_VERB_SET_CHANNEL_STREAMID, 0);
2932 		/* set the stream format */
2933 		snd_hda_codec_write(codec, nvhdmi_con_nids_7x[i], 0,
2934 				AC_VERB_SET_STREAM_FORMAT, 0);
2935 	}
2936 
2937 	/* The audio hardware sends a channel count of 0x7 (8ch) when all the
2938 	 * streams are disabled. */
2939 	nvhdmi_8ch_7x_set_info_frame_parameters(codec, 8);
2940 
2941 	return snd_hda_multi_out_dig_close(codec, &spec->multiout);
2942 }
2943 
2944 static int nvhdmi_8ch_7x_pcm_prepare(struct hda_pcm_stream *hinfo,
2945 				     struct hda_codec *codec,
2946 				     unsigned int stream_tag,
2947 				     unsigned int format,
2948 				     struct snd_pcm_substream *substream)
2949 {
2950 	int chs;
2951 	unsigned int dataDCC2, channel_id;
2952 	int i;
2953 	struct hdmi_spec *spec = codec->spec;
2954 	struct hda_spdif_out *spdif;
2955 	struct hdmi_spec_per_cvt *per_cvt;
2956 
2957 	mutex_lock(&codec->spdif_mutex);
2958 	per_cvt = get_cvt(spec, 0);
2959 	spdif = snd_hda_spdif_out_of_nid(codec, per_cvt->cvt_nid);
2960 
2961 	chs = substream->runtime->channels;
2962 
2963 	dataDCC2 = 0x2;
2964 
2965 	/* turn off SPDIF once; otherwise the IEC958 bits won't be updated */
2966 	if (codec->spdif_status_reset && (spdif->ctls & AC_DIG1_ENABLE))
2967 		snd_hda_codec_write(codec,
2968 				nvhdmi_master_con_nid_7x,
2969 				0,
2970 				AC_VERB_SET_DIGI_CONVERT_1,
2971 				spdif->ctls & ~AC_DIG1_ENABLE & 0xff);
2972 
2973 	/* set the stream id */
2974 	snd_hda_codec_write(codec, nvhdmi_master_con_nid_7x, 0,
2975 			AC_VERB_SET_CHANNEL_STREAMID, (stream_tag << 4) | 0x0);
2976 
2977 	/* set the stream format */
2978 	snd_hda_codec_write(codec, nvhdmi_master_con_nid_7x, 0,
2979 			AC_VERB_SET_STREAM_FORMAT, format);
2980 
2981 	/* turn on again (if needed) */
2982 	/* enable and set the channel status audio/data flag */
2983 	if (codec->spdif_status_reset && (spdif->ctls & AC_DIG1_ENABLE)) {
2984 		snd_hda_codec_write(codec,
2985 				nvhdmi_master_con_nid_7x,
2986 				0,
2987 				AC_VERB_SET_DIGI_CONVERT_1,
2988 				spdif->ctls & 0xff);
2989 		snd_hda_codec_write(codec,
2990 				nvhdmi_master_con_nid_7x,
2991 				0,
2992 				AC_VERB_SET_DIGI_CONVERT_2, dataDCC2);
2993 	}
2994 
2995 	for (i = 0; i < 4; i++) {
2996 		if (chs == 2)
2997 			channel_id = 0;
2998 		else
2999 			channel_id = i * 2;
3000 
3001 		/* turn off SPDIF once;
3002 		 *otherwise the IEC958 bits won't be updated
3003 		 */
3004 		if (codec->spdif_status_reset &&
3005 		(spdif->ctls & AC_DIG1_ENABLE))
3006 			snd_hda_codec_write(codec,
3007 				nvhdmi_con_nids_7x[i],
3008 				0,
3009 				AC_VERB_SET_DIGI_CONVERT_1,
3010 				spdif->ctls & ~AC_DIG1_ENABLE & 0xff);
3011 		/* set the stream id */
3012 		snd_hda_codec_write(codec,
3013 				nvhdmi_con_nids_7x[i],
3014 				0,
3015 				AC_VERB_SET_CHANNEL_STREAMID,
3016 				(stream_tag << 4) | channel_id);
3017 		/* set the stream format */
3018 		snd_hda_codec_write(codec,
3019 				nvhdmi_con_nids_7x[i],
3020 				0,
3021 				AC_VERB_SET_STREAM_FORMAT,
3022 				format);
3023 		/* turn on again (if needed) */
3024 		/* enable and set the channel status audio/data flag */
3025 		if (codec->spdif_status_reset &&
3026 		(spdif->ctls & AC_DIG1_ENABLE)) {
3027 			snd_hda_codec_write(codec,
3028 					nvhdmi_con_nids_7x[i],
3029 					0,
3030 					AC_VERB_SET_DIGI_CONVERT_1,
3031 					spdif->ctls & 0xff);
3032 			snd_hda_codec_write(codec,
3033 					nvhdmi_con_nids_7x[i],
3034 					0,
3035 					AC_VERB_SET_DIGI_CONVERT_2, dataDCC2);
3036 		}
3037 	}
3038 
3039 	nvhdmi_8ch_7x_set_info_frame_parameters(codec, chs);
3040 
3041 	mutex_unlock(&codec->spdif_mutex);
3042 	return 0;
3043 }
3044 
3045 static const struct hda_pcm_stream nvhdmi_pcm_playback_8ch_7x = {
3046 	.substreams = 1,
3047 	.channels_min = 2,
3048 	.channels_max = 8,
3049 	.nid = nvhdmi_master_con_nid_7x,
3050 	.rates = SUPPORTED_RATES,
3051 	.maxbps = SUPPORTED_MAXBPS,
3052 	.formats = SUPPORTED_FORMATS,
3053 	.ops = {
3054 		.open = simple_playback_pcm_open,
3055 		.close = nvhdmi_8ch_7x_pcm_close,
3056 		.prepare = nvhdmi_8ch_7x_pcm_prepare
3057 	},
3058 };
3059 
3060 static int patch_nvhdmi_2ch(struct hda_codec *codec)
3061 {
3062 	struct hdmi_spec *spec;
3063 	int err = patch_simple_hdmi(codec, nvhdmi_master_con_nid_7x,
3064 				    nvhdmi_master_pin_nid_7x);
3065 	if (err < 0)
3066 		return err;
3067 
3068 	codec->patch_ops.init = nvhdmi_7x_init_2ch;
3069 	/* override the PCM rates, etc, as the codec doesn't give full list */
3070 	spec = codec->spec;
3071 	spec->pcm_playback.rates = SUPPORTED_RATES;
3072 	spec->pcm_playback.maxbps = SUPPORTED_MAXBPS;
3073 	spec->pcm_playback.formats = SUPPORTED_FORMATS;
3074 	return 0;
3075 }
3076 
3077 static int nvhdmi_7x_8ch_build_pcms(struct hda_codec *codec)
3078 {
3079 	struct hdmi_spec *spec = codec->spec;
3080 	int err = simple_playback_build_pcms(codec);
3081 	if (!err) {
3082 		struct hda_pcm *info = get_pcm_rec(spec, 0);
3083 		info->own_chmap = true;
3084 	}
3085 	return err;
3086 }
3087 
3088 static int nvhdmi_7x_8ch_build_controls(struct hda_codec *codec)
3089 {
3090 	struct hdmi_spec *spec = codec->spec;
3091 	struct hda_pcm *info;
3092 	struct snd_pcm_chmap *chmap;
3093 	int err;
3094 
3095 	err = simple_playback_build_controls(codec);
3096 	if (err < 0)
3097 		return err;
3098 
3099 	/* add channel maps */
3100 	info = get_pcm_rec(spec, 0);
3101 	err = snd_pcm_add_chmap_ctls(info->pcm,
3102 				     SNDRV_PCM_STREAM_PLAYBACK,
3103 				     snd_pcm_alt_chmaps, 8, 0, &chmap);
3104 	if (err < 0)
3105 		return err;
3106 	switch (codec->preset->vendor_id) {
3107 	case 0x10de0002:
3108 	case 0x10de0003:
3109 	case 0x10de0005:
3110 	case 0x10de0006:
3111 		chmap->channel_mask = (1U << 2) | (1U << 8);
3112 		break;
3113 	case 0x10de0007:
3114 		chmap->channel_mask = (1U << 2) | (1U << 6) | (1U << 8);
3115 	}
3116 	return 0;
3117 }
3118 
3119 static int patch_nvhdmi_8ch_7x(struct hda_codec *codec)
3120 {
3121 	struct hdmi_spec *spec;
3122 	int err = patch_nvhdmi_2ch(codec);
3123 	if (err < 0)
3124 		return err;
3125 	spec = codec->spec;
3126 	spec->multiout.max_channels = 8;
3127 	spec->pcm_playback = nvhdmi_pcm_playback_8ch_7x;
3128 	codec->patch_ops.init = nvhdmi_7x_init_8ch;
3129 	codec->patch_ops.build_pcms = nvhdmi_7x_8ch_build_pcms;
3130 	codec->patch_ops.build_controls = nvhdmi_7x_8ch_build_controls;
3131 
3132 	/* Initialize the audio infoframe channel mask and checksum to something
3133 	 * valid */
3134 	nvhdmi_8ch_7x_set_info_frame_parameters(codec, 8);
3135 
3136 	return 0;
3137 }
3138 
3139 /*
3140  * NVIDIA codecs ignore ASP mapping for 2ch - confirmed on:
3141  * - 0x10de0015
3142  * - 0x10de0040
3143  */
3144 static int nvhdmi_chmap_cea_alloc_validate_get_type(struct hdac_chmap *chmap,
3145 		struct hdac_cea_channel_speaker_allocation *cap, int channels)
3146 {
3147 	if (cap->ca_index == 0x00 && channels == 2)
3148 		return SNDRV_CTL_TLVT_CHMAP_FIXED;
3149 
3150 	/* If the speaker allocation matches the channel count, it is OK. */
3151 	if (cap->channels != channels)
3152 		return -1;
3153 
3154 	/* all channels are remappable freely */
3155 	return SNDRV_CTL_TLVT_CHMAP_VAR;
3156 }
3157 
3158 static int nvhdmi_chmap_validate(struct hdac_chmap *chmap,
3159 		int ca, int chs, unsigned char *map)
3160 {
3161 	if (ca == 0x00 && (map[0] != SNDRV_CHMAP_FL || map[1] != SNDRV_CHMAP_FR))
3162 		return -EINVAL;
3163 
3164 	return 0;
3165 }
3166 
3167 static int patch_nvhdmi(struct hda_codec *codec)
3168 {
3169 	struct hdmi_spec *spec;
3170 	int err;
3171 
3172 	err = patch_generic_hdmi(codec);
3173 	if (err)
3174 		return err;
3175 
3176 	spec = codec->spec;
3177 	spec->dyn_pin_out = true;
3178 
3179 	spec->chmap.ops.chmap_cea_alloc_validate_get_type =
3180 		nvhdmi_chmap_cea_alloc_validate_get_type;
3181 	spec->chmap.ops.chmap_validate = nvhdmi_chmap_validate;
3182 
3183 	return 0;
3184 }
3185 
3186 /*
3187  * The HDA codec on NVIDIA Tegra contains two scratch registers that are
3188  * accessed using vendor-defined verbs. These registers can be used for
3189  * interoperability between the HDA and HDMI drivers.
3190  */
3191 
3192 /* Audio Function Group node */
3193 #define NVIDIA_AFG_NID 0x01
3194 
3195 /*
3196  * The SCRATCH0 register is used to notify the HDMI codec of changes in audio
3197  * format. On Tegra, bit 31 is used as a trigger that causes an interrupt to
3198  * be raised in the HDMI codec. The remainder of the bits is arbitrary. This
3199  * implementation stores the HDA format (see AC_FMT_*) in bits [15:0] and an
3200  * additional bit (at position 30) to signal the validity of the format.
3201  *
3202  * | 31      | 30    | 29  16 | 15   0 |
3203  * +---------+-------+--------+--------+
3204  * | TRIGGER | VALID | UNUSED | FORMAT |
3205  * +-----------------------------------|
3206  *
3207  * Note that for the trigger bit to take effect it needs to change value
3208  * (i.e. it needs to be toggled).
3209  */
3210 #define NVIDIA_GET_SCRATCH0		0xfa6
3211 #define NVIDIA_SET_SCRATCH0_BYTE0	0xfa7
3212 #define NVIDIA_SET_SCRATCH0_BYTE1	0xfa8
3213 #define NVIDIA_SET_SCRATCH0_BYTE2	0xfa9
3214 #define NVIDIA_SET_SCRATCH0_BYTE3	0xfaa
3215 #define NVIDIA_SCRATCH_TRIGGER (1 << 7)
3216 #define NVIDIA_SCRATCH_VALID   (1 << 6)
3217 
3218 #define NVIDIA_GET_SCRATCH1		0xfab
3219 #define NVIDIA_SET_SCRATCH1_BYTE0	0xfac
3220 #define NVIDIA_SET_SCRATCH1_BYTE1	0xfad
3221 #define NVIDIA_SET_SCRATCH1_BYTE2	0xfae
3222 #define NVIDIA_SET_SCRATCH1_BYTE3	0xfaf
3223 
3224 /*
3225  * The format parameter is the HDA audio format (see AC_FMT_*). If set to 0,
3226  * the format is invalidated so that the HDMI codec can be disabled.
3227  */
3228 static void tegra_hdmi_set_format(struct hda_codec *codec, unsigned int format)
3229 {
3230 	unsigned int value;
3231 
3232 	/* bits [31:30] contain the trigger and valid bits */
3233 	value = snd_hda_codec_read(codec, NVIDIA_AFG_NID, 0,
3234 				   NVIDIA_GET_SCRATCH0, 0);
3235 	value = (value >> 24) & 0xff;
3236 
3237 	/* bits [15:0] are used to store the HDA format */
3238 	snd_hda_codec_write(codec, NVIDIA_AFG_NID, 0,
3239 			    NVIDIA_SET_SCRATCH0_BYTE0,
3240 			    (format >> 0) & 0xff);
3241 	snd_hda_codec_write(codec, NVIDIA_AFG_NID, 0,
3242 			    NVIDIA_SET_SCRATCH0_BYTE1,
3243 			    (format >> 8) & 0xff);
3244 
3245 	/* bits [16:24] are unused */
3246 	snd_hda_codec_write(codec, NVIDIA_AFG_NID, 0,
3247 			    NVIDIA_SET_SCRATCH0_BYTE2, 0);
3248 
3249 	/*
3250 	 * Bit 30 signals that the data is valid and hence that HDMI audio can
3251 	 * be enabled.
3252 	 */
3253 	if (format == 0)
3254 		value &= ~NVIDIA_SCRATCH_VALID;
3255 	else
3256 		value |= NVIDIA_SCRATCH_VALID;
3257 
3258 	/*
3259 	 * Whenever the trigger bit is toggled, an interrupt is raised in the
3260 	 * HDMI codec. The HDMI driver will use that as trigger to update its
3261 	 * configuration.
3262 	 */
3263 	value ^= NVIDIA_SCRATCH_TRIGGER;
3264 
3265 	snd_hda_codec_write(codec, NVIDIA_AFG_NID, 0,
3266 			    NVIDIA_SET_SCRATCH0_BYTE3, value);
3267 }
3268 
3269 static int tegra_hdmi_pcm_prepare(struct hda_pcm_stream *hinfo,
3270 				  struct hda_codec *codec,
3271 				  unsigned int stream_tag,
3272 				  unsigned int format,
3273 				  struct snd_pcm_substream *substream)
3274 {
3275 	int err;
3276 
3277 	err = generic_hdmi_playback_pcm_prepare(hinfo, codec, stream_tag,
3278 						format, substream);
3279 	if (err < 0)
3280 		return err;
3281 
3282 	/* notify the HDMI codec of the format change */
3283 	tegra_hdmi_set_format(codec, format);
3284 
3285 	return 0;
3286 }
3287 
3288 static int tegra_hdmi_pcm_cleanup(struct hda_pcm_stream *hinfo,
3289 				  struct hda_codec *codec,
3290 				  struct snd_pcm_substream *substream)
3291 {
3292 	/* invalidate the format in the HDMI codec */
3293 	tegra_hdmi_set_format(codec, 0);
3294 
3295 	return generic_hdmi_playback_pcm_cleanup(hinfo, codec, substream);
3296 }
3297 
3298 static struct hda_pcm *hda_find_pcm_by_type(struct hda_codec *codec, int type)
3299 {
3300 	struct hdmi_spec *spec = codec->spec;
3301 	unsigned int i;
3302 
3303 	for (i = 0; i < spec->num_pins; i++) {
3304 		struct hda_pcm *pcm = get_pcm_rec(spec, i);
3305 
3306 		if (pcm->pcm_type == type)
3307 			return pcm;
3308 	}
3309 
3310 	return NULL;
3311 }
3312 
3313 static int tegra_hdmi_build_pcms(struct hda_codec *codec)
3314 {
3315 	struct hda_pcm_stream *stream;
3316 	struct hda_pcm *pcm;
3317 	int err;
3318 
3319 	err = generic_hdmi_build_pcms(codec);
3320 	if (err < 0)
3321 		return err;
3322 
3323 	pcm = hda_find_pcm_by_type(codec, HDA_PCM_TYPE_HDMI);
3324 	if (!pcm)
3325 		return -ENODEV;
3326 
3327 	/*
3328 	 * Override ->prepare() and ->cleanup() operations to notify the HDMI
3329 	 * codec about format changes.
3330 	 */
3331 	stream = &pcm->stream[SNDRV_PCM_STREAM_PLAYBACK];
3332 	stream->ops.prepare = tegra_hdmi_pcm_prepare;
3333 	stream->ops.cleanup = tegra_hdmi_pcm_cleanup;
3334 
3335 	return 0;
3336 }
3337 
3338 static int patch_tegra_hdmi(struct hda_codec *codec)
3339 {
3340 	int err;
3341 
3342 	err = patch_generic_hdmi(codec);
3343 	if (err)
3344 		return err;
3345 
3346 	codec->patch_ops.build_pcms = tegra_hdmi_build_pcms;
3347 
3348 	return 0;
3349 }
3350 
3351 /*
3352  * ATI/AMD-specific implementations
3353  */
3354 
3355 #define is_amdhdmi_rev3_or_later(codec) \
3356 	((codec)->core.vendor_id == 0x1002aa01 && \
3357 	 ((codec)->core.revision_id & 0xff00) >= 0x0300)
3358 #define has_amd_full_remap_support(codec) is_amdhdmi_rev3_or_later(codec)
3359 
3360 /* ATI/AMD specific HDA pin verbs, see the AMD HDA Verbs specification */
3361 #define ATI_VERB_SET_CHANNEL_ALLOCATION	0x771
3362 #define ATI_VERB_SET_DOWNMIX_INFO	0x772
3363 #define ATI_VERB_SET_MULTICHANNEL_01	0x777
3364 #define ATI_VERB_SET_MULTICHANNEL_23	0x778
3365 #define ATI_VERB_SET_MULTICHANNEL_45	0x779
3366 #define ATI_VERB_SET_MULTICHANNEL_67	0x77a
3367 #define ATI_VERB_SET_HBR_CONTROL	0x77c
3368 #define ATI_VERB_SET_MULTICHANNEL_1	0x785
3369 #define ATI_VERB_SET_MULTICHANNEL_3	0x786
3370 #define ATI_VERB_SET_MULTICHANNEL_5	0x787
3371 #define ATI_VERB_SET_MULTICHANNEL_7	0x788
3372 #define ATI_VERB_SET_MULTICHANNEL_MODE	0x789
3373 #define ATI_VERB_GET_CHANNEL_ALLOCATION	0xf71
3374 #define ATI_VERB_GET_DOWNMIX_INFO	0xf72
3375 #define ATI_VERB_GET_MULTICHANNEL_01	0xf77
3376 #define ATI_VERB_GET_MULTICHANNEL_23	0xf78
3377 #define ATI_VERB_GET_MULTICHANNEL_45	0xf79
3378 #define ATI_VERB_GET_MULTICHANNEL_67	0xf7a
3379 #define ATI_VERB_GET_HBR_CONTROL	0xf7c
3380 #define ATI_VERB_GET_MULTICHANNEL_1	0xf85
3381 #define ATI_VERB_GET_MULTICHANNEL_3	0xf86
3382 #define ATI_VERB_GET_MULTICHANNEL_5	0xf87
3383 #define ATI_VERB_GET_MULTICHANNEL_7	0xf88
3384 #define ATI_VERB_GET_MULTICHANNEL_MODE	0xf89
3385 
3386 /* AMD specific HDA cvt verbs */
3387 #define ATI_VERB_SET_RAMP_RATE		0x770
3388 #define ATI_VERB_GET_RAMP_RATE		0xf70
3389 
3390 #define ATI_OUT_ENABLE 0x1
3391 
3392 #define ATI_MULTICHANNEL_MODE_PAIRED	0
3393 #define ATI_MULTICHANNEL_MODE_SINGLE	1
3394 
3395 #define ATI_HBR_CAPABLE 0x01
3396 #define ATI_HBR_ENABLE 0x10
3397 
3398 static int atihdmi_pin_get_eld(struct hda_codec *codec, hda_nid_t nid,
3399 			   unsigned char *buf, int *eld_size)
3400 {
3401 	/* call hda_eld.c ATI/AMD-specific function */
3402 	return snd_hdmi_get_eld_ati(codec, nid, buf, eld_size,
3403 				    is_amdhdmi_rev3_or_later(codec));
3404 }
3405 
3406 static void atihdmi_pin_setup_infoframe(struct hda_codec *codec, hda_nid_t pin_nid, int ca,
3407 					int active_channels, int conn_type)
3408 {
3409 	snd_hda_codec_write(codec, pin_nid, 0, ATI_VERB_SET_CHANNEL_ALLOCATION, ca);
3410 }
3411 
3412 static int atihdmi_paired_swap_fc_lfe(int pos)
3413 {
3414 	/*
3415 	 * ATI/AMD have automatic FC/LFE swap built-in
3416 	 * when in pairwise mapping mode.
3417 	 */
3418 
3419 	switch (pos) {
3420 		/* see channel_allocations[].speakers[] */
3421 		case 2: return 3;
3422 		case 3: return 2;
3423 		default: break;
3424 	}
3425 
3426 	return pos;
3427 }
3428 
3429 static int atihdmi_paired_chmap_validate(struct hdac_chmap *chmap,
3430 			int ca, int chs, unsigned char *map)
3431 {
3432 	struct hdac_cea_channel_speaker_allocation *cap;
3433 	int i, j;
3434 
3435 	/* check that only channel pairs need to be remapped on old pre-rev3 ATI/AMD */
3436 
3437 	cap = snd_hdac_get_ch_alloc_from_ca(ca);
3438 	for (i = 0; i < chs; ++i) {
3439 		int mask = snd_hdac_chmap_to_spk_mask(map[i]);
3440 		bool ok = false;
3441 		bool companion_ok = false;
3442 
3443 		if (!mask)
3444 			continue;
3445 
3446 		for (j = 0 + i % 2; j < 8; j += 2) {
3447 			int chan_idx = 7 - atihdmi_paired_swap_fc_lfe(j);
3448 			if (cap->speakers[chan_idx] == mask) {
3449 				/* channel is in a supported position */
3450 				ok = true;
3451 
3452 				if (i % 2 == 0 && i + 1 < chs) {
3453 					/* even channel, check the odd companion */
3454 					int comp_chan_idx = 7 - atihdmi_paired_swap_fc_lfe(j + 1);
3455 					int comp_mask_req = snd_hdac_chmap_to_spk_mask(map[i+1]);
3456 					int comp_mask_act = cap->speakers[comp_chan_idx];
3457 
3458 					if (comp_mask_req == comp_mask_act)
3459 						companion_ok = true;
3460 					else
3461 						return -EINVAL;
3462 				}
3463 				break;
3464 			}
3465 		}
3466 
3467 		if (!ok)
3468 			return -EINVAL;
3469 
3470 		if (companion_ok)
3471 			i++; /* companion channel already checked */
3472 	}
3473 
3474 	return 0;
3475 }
3476 
3477 static int atihdmi_pin_set_slot_channel(struct hdac_device *hdac,
3478 		hda_nid_t pin_nid, int hdmi_slot, int stream_channel)
3479 {
3480 	struct hda_codec *codec = container_of(hdac, struct hda_codec, core);
3481 	int verb;
3482 	int ati_channel_setup = 0;
3483 
3484 	if (hdmi_slot > 7)
3485 		return -EINVAL;
3486 
3487 	if (!has_amd_full_remap_support(codec)) {
3488 		hdmi_slot = atihdmi_paired_swap_fc_lfe(hdmi_slot);
3489 
3490 		/* In case this is an odd slot but without stream channel, do not
3491 		 * disable the slot since the corresponding even slot could have a
3492 		 * channel. In case neither have a channel, the slot pair will be
3493 		 * disabled when this function is called for the even slot. */
3494 		if (hdmi_slot % 2 != 0 && stream_channel == 0xf)
3495 			return 0;
3496 
3497 		hdmi_slot -= hdmi_slot % 2;
3498 
3499 		if (stream_channel != 0xf)
3500 			stream_channel -= stream_channel % 2;
3501 	}
3502 
3503 	verb = ATI_VERB_SET_MULTICHANNEL_01 + hdmi_slot/2 + (hdmi_slot % 2) * 0x00e;
3504 
3505 	/* ati_channel_setup format: [7..4] = stream_channel_id, [1] = mute, [0] = enable */
3506 
3507 	if (stream_channel != 0xf)
3508 		ati_channel_setup = (stream_channel << 4) | ATI_OUT_ENABLE;
3509 
3510 	return snd_hda_codec_write(codec, pin_nid, 0, verb, ati_channel_setup);
3511 }
3512 
3513 static int atihdmi_pin_get_slot_channel(struct hdac_device *hdac,
3514 				hda_nid_t pin_nid, int asp_slot)
3515 {
3516 	struct hda_codec *codec = container_of(hdac, struct hda_codec, core);
3517 	bool was_odd = false;
3518 	int ati_asp_slot = asp_slot;
3519 	int verb;
3520 	int ati_channel_setup;
3521 
3522 	if (asp_slot > 7)
3523 		return -EINVAL;
3524 
3525 	if (!has_amd_full_remap_support(codec)) {
3526 		ati_asp_slot = atihdmi_paired_swap_fc_lfe(asp_slot);
3527 		if (ati_asp_slot % 2 != 0) {
3528 			ati_asp_slot -= 1;
3529 			was_odd = true;
3530 		}
3531 	}
3532 
3533 	verb = ATI_VERB_GET_MULTICHANNEL_01 + ati_asp_slot/2 + (ati_asp_slot % 2) * 0x00e;
3534 
3535 	ati_channel_setup = snd_hda_codec_read(codec, pin_nid, 0, verb, 0);
3536 
3537 	if (!(ati_channel_setup & ATI_OUT_ENABLE))
3538 		return 0xf;
3539 
3540 	return ((ati_channel_setup & 0xf0) >> 4) + !!was_odd;
3541 }
3542 
3543 static int atihdmi_paired_chmap_cea_alloc_validate_get_type(
3544 		struct hdac_chmap *chmap,
3545 		struct hdac_cea_channel_speaker_allocation *cap,
3546 		int channels)
3547 {
3548 	int c;
3549 
3550 	/*
3551 	 * Pre-rev3 ATI/AMD codecs operate in a paired channel mode, so
3552 	 * we need to take that into account (a single channel may take 2
3553 	 * channel slots if we need to carry a silent channel next to it).
3554 	 * On Rev3+ AMD codecs this function is not used.
3555 	 */
3556 	int chanpairs = 0;
3557 
3558 	/* We only produce even-numbered channel count TLVs */
3559 	if ((channels % 2) != 0)
3560 		return -1;
3561 
3562 	for (c = 0; c < 7; c += 2) {
3563 		if (cap->speakers[c] || cap->speakers[c+1])
3564 			chanpairs++;
3565 	}
3566 
3567 	if (chanpairs * 2 != channels)
3568 		return -1;
3569 
3570 	return SNDRV_CTL_TLVT_CHMAP_PAIRED;
3571 }
3572 
3573 static void atihdmi_paired_cea_alloc_to_tlv_chmap(struct hdac_chmap *hchmap,
3574 		struct hdac_cea_channel_speaker_allocation *cap,
3575 		unsigned int *chmap, int channels)
3576 {
3577 	/* produce paired maps for pre-rev3 ATI/AMD codecs */
3578 	int count = 0;
3579 	int c;
3580 
3581 	for (c = 7; c >= 0; c--) {
3582 		int chan = 7 - atihdmi_paired_swap_fc_lfe(7 - c);
3583 		int spk = cap->speakers[chan];
3584 		if (!spk) {
3585 			/* add N/A channel if the companion channel is occupied */
3586 			if (cap->speakers[chan + (chan % 2 ? -1 : 1)])
3587 				chmap[count++] = SNDRV_CHMAP_NA;
3588 
3589 			continue;
3590 		}
3591 
3592 		chmap[count++] = snd_hdac_spk_to_chmap(spk);
3593 	}
3594 
3595 	WARN_ON(count != channels);
3596 }
3597 
3598 static int atihdmi_pin_hbr_setup(struct hda_codec *codec, hda_nid_t pin_nid,
3599 				 bool hbr)
3600 {
3601 	int hbr_ctl, hbr_ctl_new;
3602 
3603 	hbr_ctl = snd_hda_codec_read(codec, pin_nid, 0, ATI_VERB_GET_HBR_CONTROL, 0);
3604 	if (hbr_ctl >= 0 && (hbr_ctl & ATI_HBR_CAPABLE)) {
3605 		if (hbr)
3606 			hbr_ctl_new = hbr_ctl | ATI_HBR_ENABLE;
3607 		else
3608 			hbr_ctl_new = hbr_ctl & ~ATI_HBR_ENABLE;
3609 
3610 		codec_dbg(codec,
3611 			  "atihdmi_pin_hbr_setup: NID=0x%x, %shbr-ctl=0x%x\n",
3612 				pin_nid,
3613 				hbr_ctl == hbr_ctl_new ? "" : "new-",
3614 				hbr_ctl_new);
3615 
3616 		if (hbr_ctl != hbr_ctl_new)
3617 			snd_hda_codec_write(codec, pin_nid, 0,
3618 						ATI_VERB_SET_HBR_CONTROL,
3619 						hbr_ctl_new);
3620 
3621 	} else if (hbr)
3622 		return -EINVAL;
3623 
3624 	return 0;
3625 }
3626 
3627 static int atihdmi_setup_stream(struct hda_codec *codec, hda_nid_t cvt_nid,
3628 				hda_nid_t pin_nid, u32 stream_tag, int format)
3629 {
3630 
3631 	if (is_amdhdmi_rev3_or_later(codec)) {
3632 		int ramp_rate = 180; /* default as per AMD spec */
3633 		/* disable ramp-up/down for non-pcm as per AMD spec */
3634 		if (format & AC_FMT_TYPE_NON_PCM)
3635 			ramp_rate = 0;
3636 
3637 		snd_hda_codec_write(codec, cvt_nid, 0, ATI_VERB_SET_RAMP_RATE, ramp_rate);
3638 	}
3639 
3640 	return hdmi_setup_stream(codec, cvt_nid, pin_nid, stream_tag, format);
3641 }
3642 
3643 
3644 static int atihdmi_init(struct hda_codec *codec)
3645 {
3646 	struct hdmi_spec *spec = codec->spec;
3647 	int pin_idx, err;
3648 
3649 	err = generic_hdmi_init(codec);
3650 
3651 	if (err)
3652 		return err;
3653 
3654 	for (pin_idx = 0; pin_idx < spec->num_pins; pin_idx++) {
3655 		struct hdmi_spec_per_pin *per_pin = get_pin(spec, pin_idx);
3656 
3657 		/* make sure downmix information in infoframe is zero */
3658 		snd_hda_codec_write(codec, per_pin->pin_nid, 0, ATI_VERB_SET_DOWNMIX_INFO, 0);
3659 
3660 		/* enable channel-wise remap mode if supported */
3661 		if (has_amd_full_remap_support(codec))
3662 			snd_hda_codec_write(codec, per_pin->pin_nid, 0,
3663 					    ATI_VERB_SET_MULTICHANNEL_MODE,
3664 					    ATI_MULTICHANNEL_MODE_SINGLE);
3665 	}
3666 
3667 	return 0;
3668 }
3669 
3670 static int patch_atihdmi(struct hda_codec *codec)
3671 {
3672 	struct hdmi_spec *spec;
3673 	struct hdmi_spec_per_cvt *per_cvt;
3674 	int err, cvt_idx;
3675 
3676 	err = patch_generic_hdmi(codec);
3677 
3678 	if (err)
3679 		return err;
3680 
3681 	codec->patch_ops.init = atihdmi_init;
3682 
3683 	spec = codec->spec;
3684 
3685 	spec->ops.pin_get_eld = atihdmi_pin_get_eld;
3686 	spec->ops.pin_setup_infoframe = atihdmi_pin_setup_infoframe;
3687 	spec->ops.pin_hbr_setup = atihdmi_pin_hbr_setup;
3688 	spec->ops.setup_stream = atihdmi_setup_stream;
3689 
3690 	spec->chmap.ops.pin_get_slot_channel = atihdmi_pin_get_slot_channel;
3691 	spec->chmap.ops.pin_set_slot_channel = atihdmi_pin_set_slot_channel;
3692 
3693 	if (!has_amd_full_remap_support(codec)) {
3694 		/* override to ATI/AMD-specific versions with pairwise mapping */
3695 		spec->chmap.ops.chmap_cea_alloc_validate_get_type =
3696 			atihdmi_paired_chmap_cea_alloc_validate_get_type;
3697 		spec->chmap.ops.cea_alloc_to_tlv_chmap =
3698 				atihdmi_paired_cea_alloc_to_tlv_chmap;
3699 		spec->chmap.ops.chmap_validate = atihdmi_paired_chmap_validate;
3700 	}
3701 
3702 	/* ATI/AMD converters do not advertise all of their capabilities */
3703 	for (cvt_idx = 0; cvt_idx < spec->num_cvts; cvt_idx++) {
3704 		per_cvt = get_cvt(spec, cvt_idx);
3705 		per_cvt->channels_max = max(per_cvt->channels_max, 8u);
3706 		per_cvt->rates |= SUPPORTED_RATES;
3707 		per_cvt->formats |= SUPPORTED_FORMATS;
3708 		per_cvt->maxbps = max(per_cvt->maxbps, 24u);
3709 	}
3710 
3711 	spec->chmap.channels_max = max(spec->chmap.channels_max, 8u);
3712 
3713 	return 0;
3714 }
3715 
3716 /* VIA HDMI Implementation */
3717 #define VIAHDMI_CVT_NID	0x02	/* audio converter1 */
3718 #define VIAHDMI_PIN_NID	0x03	/* HDMI output pin1 */
3719 
3720 static int patch_via_hdmi(struct hda_codec *codec)
3721 {
3722 	return patch_simple_hdmi(codec, VIAHDMI_CVT_NID, VIAHDMI_PIN_NID);
3723 }
3724 
3725 /*
3726  * patch entries
3727  */
3728 static const struct hda_device_id snd_hda_id_hdmi[] = {
3729 HDA_CODEC_ENTRY(0x1002793c, "RS600 HDMI",	patch_atihdmi),
3730 HDA_CODEC_ENTRY(0x10027919, "RS600 HDMI",	patch_atihdmi),
3731 HDA_CODEC_ENTRY(0x1002791a, "RS690/780 HDMI",	patch_atihdmi),
3732 HDA_CODEC_ENTRY(0x1002aa01, "R6xx HDMI",	patch_atihdmi),
3733 HDA_CODEC_ENTRY(0x10951390, "SiI1390 HDMI",	patch_generic_hdmi),
3734 HDA_CODEC_ENTRY(0x10951392, "SiI1392 HDMI",	patch_generic_hdmi),
3735 HDA_CODEC_ENTRY(0x17e80047, "Chrontel HDMI",	patch_generic_hdmi),
3736 HDA_CODEC_ENTRY(0x10de0002, "MCP77/78 HDMI",	patch_nvhdmi_8ch_7x),
3737 HDA_CODEC_ENTRY(0x10de0003, "MCP77/78 HDMI",	patch_nvhdmi_8ch_7x),
3738 HDA_CODEC_ENTRY(0x10de0005, "MCP77/78 HDMI",	patch_nvhdmi_8ch_7x),
3739 HDA_CODEC_ENTRY(0x10de0006, "MCP77/78 HDMI",	patch_nvhdmi_8ch_7x),
3740 HDA_CODEC_ENTRY(0x10de0007, "MCP79/7A HDMI",	patch_nvhdmi_8ch_7x),
3741 HDA_CODEC_ENTRY(0x10de000a, "GPU 0a HDMI/DP",	patch_nvhdmi),
3742 HDA_CODEC_ENTRY(0x10de000b, "GPU 0b HDMI/DP",	patch_nvhdmi),
3743 HDA_CODEC_ENTRY(0x10de000c, "MCP89 HDMI",	patch_nvhdmi),
3744 HDA_CODEC_ENTRY(0x10de000d, "GPU 0d HDMI/DP",	patch_nvhdmi),
3745 HDA_CODEC_ENTRY(0x10de0010, "GPU 10 HDMI/DP",	patch_nvhdmi),
3746 HDA_CODEC_ENTRY(0x10de0011, "GPU 11 HDMI/DP",	patch_nvhdmi),
3747 HDA_CODEC_ENTRY(0x10de0012, "GPU 12 HDMI/DP",	patch_nvhdmi),
3748 HDA_CODEC_ENTRY(0x10de0013, "GPU 13 HDMI/DP",	patch_nvhdmi),
3749 HDA_CODEC_ENTRY(0x10de0014, "GPU 14 HDMI/DP",	patch_nvhdmi),
3750 HDA_CODEC_ENTRY(0x10de0015, "GPU 15 HDMI/DP",	patch_nvhdmi),
3751 HDA_CODEC_ENTRY(0x10de0016, "GPU 16 HDMI/DP",	patch_nvhdmi),
3752 /* 17 is known to be absent */
3753 HDA_CODEC_ENTRY(0x10de0018, "GPU 18 HDMI/DP",	patch_nvhdmi),
3754 HDA_CODEC_ENTRY(0x10de0019, "GPU 19 HDMI/DP",	patch_nvhdmi),
3755 HDA_CODEC_ENTRY(0x10de001a, "GPU 1a HDMI/DP",	patch_nvhdmi),
3756 HDA_CODEC_ENTRY(0x10de001b, "GPU 1b HDMI/DP",	patch_nvhdmi),
3757 HDA_CODEC_ENTRY(0x10de001c, "GPU 1c HDMI/DP",	patch_nvhdmi),
3758 HDA_CODEC_ENTRY(0x10de0020, "Tegra30 HDMI",	patch_tegra_hdmi),
3759 HDA_CODEC_ENTRY(0x10de0022, "Tegra114 HDMI",	patch_tegra_hdmi),
3760 HDA_CODEC_ENTRY(0x10de0028, "Tegra124 HDMI",	patch_tegra_hdmi),
3761 HDA_CODEC_ENTRY(0x10de0029, "Tegra210 HDMI/DP",	patch_tegra_hdmi),
3762 HDA_CODEC_ENTRY(0x10de0040, "GPU 40 HDMI/DP",	patch_nvhdmi),
3763 HDA_CODEC_ENTRY(0x10de0041, "GPU 41 HDMI/DP",	patch_nvhdmi),
3764 HDA_CODEC_ENTRY(0x10de0042, "GPU 42 HDMI/DP",	patch_nvhdmi),
3765 HDA_CODEC_ENTRY(0x10de0043, "GPU 43 HDMI/DP",	patch_nvhdmi),
3766 HDA_CODEC_ENTRY(0x10de0044, "GPU 44 HDMI/DP",	patch_nvhdmi),
3767 HDA_CODEC_ENTRY(0x10de0051, "GPU 51 HDMI/DP",	patch_nvhdmi),
3768 HDA_CODEC_ENTRY(0x10de0060, "GPU 60 HDMI/DP",	patch_nvhdmi),
3769 HDA_CODEC_ENTRY(0x10de0067, "MCP67 HDMI",	patch_nvhdmi_2ch),
3770 HDA_CODEC_ENTRY(0x10de0070, "GPU 70 HDMI/DP",	patch_nvhdmi),
3771 HDA_CODEC_ENTRY(0x10de0071, "GPU 71 HDMI/DP",	patch_nvhdmi),
3772 HDA_CODEC_ENTRY(0x10de0072, "GPU 72 HDMI/DP",	patch_nvhdmi),
3773 HDA_CODEC_ENTRY(0x10de007d, "GPU 7d HDMI/DP",	patch_nvhdmi),
3774 HDA_CODEC_ENTRY(0x10de0080, "GPU 80 HDMI/DP",	patch_nvhdmi),
3775 HDA_CODEC_ENTRY(0x10de0082, "GPU 82 HDMI/DP",	patch_nvhdmi),
3776 HDA_CODEC_ENTRY(0x10de0083, "GPU 83 HDMI/DP",	patch_nvhdmi),
3777 HDA_CODEC_ENTRY(0x10de8001, "MCP73 HDMI",	patch_nvhdmi_2ch),
3778 HDA_CODEC_ENTRY(0x11069f80, "VX900 HDMI/DP",	patch_via_hdmi),
3779 HDA_CODEC_ENTRY(0x11069f81, "VX900 HDMI/DP",	patch_via_hdmi),
3780 HDA_CODEC_ENTRY(0x11069f84, "VX11 HDMI/DP",	patch_generic_hdmi),
3781 HDA_CODEC_ENTRY(0x11069f85, "VX11 HDMI/DP",	patch_generic_hdmi),
3782 HDA_CODEC_ENTRY(0x80860054, "IbexPeak HDMI",	patch_i915_cpt_hdmi),
3783 HDA_CODEC_ENTRY(0x80862801, "Bearlake HDMI",	patch_generic_hdmi),
3784 HDA_CODEC_ENTRY(0x80862802, "Cantiga HDMI",	patch_generic_hdmi),
3785 HDA_CODEC_ENTRY(0x80862803, "Eaglelake HDMI",	patch_generic_hdmi),
3786 HDA_CODEC_ENTRY(0x80862804, "IbexPeak HDMI",	patch_i915_cpt_hdmi),
3787 HDA_CODEC_ENTRY(0x80862805, "CougarPoint HDMI",	patch_i915_cpt_hdmi),
3788 HDA_CODEC_ENTRY(0x80862806, "PantherPoint HDMI", patch_i915_cpt_hdmi),
3789 HDA_CODEC_ENTRY(0x80862807, "Haswell HDMI",	patch_i915_hsw_hdmi),
3790 HDA_CODEC_ENTRY(0x80862808, "Broadwell HDMI",	patch_i915_hsw_hdmi),
3791 HDA_CODEC_ENTRY(0x80862809, "Skylake HDMI",	patch_i915_hsw_hdmi),
3792 HDA_CODEC_ENTRY(0x8086280a, "Broxton HDMI",	patch_i915_hsw_hdmi),
3793 HDA_CODEC_ENTRY(0x8086280b, "Kabylake HDMI",	patch_i915_hsw_hdmi),
3794 HDA_CODEC_ENTRY(0x8086280d, "Geminilake HDMI",	patch_i915_glk_hdmi),
3795 HDA_CODEC_ENTRY(0x80862800, "Geminilake HDMI",	patch_i915_glk_hdmi),
3796 HDA_CODEC_ENTRY(0x80862880, "CedarTrail HDMI",	patch_generic_hdmi),
3797 HDA_CODEC_ENTRY(0x80862882, "Valleyview2 HDMI",	patch_i915_byt_hdmi),
3798 HDA_CODEC_ENTRY(0x80862883, "Braswell HDMI",	patch_i915_byt_hdmi),
3799 HDA_CODEC_ENTRY(0x808629fb, "Crestline HDMI",	patch_generic_hdmi),
3800 /* special ID for generic HDMI */
3801 HDA_CODEC_ENTRY(HDA_CODEC_ID_GENERIC_HDMI, "Generic HDMI", patch_generic_hdmi),
3802 {} /* terminator */
3803 };
3804 MODULE_DEVICE_TABLE(hdaudio, snd_hda_id_hdmi);
3805 
3806 MODULE_LICENSE("GPL");
3807 MODULE_DESCRIPTION("HDMI HD-audio codec");
3808 MODULE_ALIAS("snd-hda-codec-intelhdmi");
3809 MODULE_ALIAS("snd-hda-codec-nvhdmi");
3810 MODULE_ALIAS("snd-hda-codec-atihdmi");
3811 
3812 static struct hda_codec_driver hdmi_driver = {
3813 	.id = snd_hda_id_hdmi,
3814 };
3815 
3816 module_hda_codec_driver(hdmi_driver);
3817