xref: /openbmc/linux/sound/pci/hda/hda_codec.c (revision da2ef666)
1 /*
2  * Universal Interface for Intel High Definition Audio Codec
3  *
4  * Copyright (c) 2004 Takashi Iwai <tiwai@suse.de>
5  *
6  *
7  *  This driver is free software; you can redistribute it and/or modify
8  *  it under the terms of the GNU General Public License as published by
9  *  the Free Software Foundation; either version 2 of the License, or
10  *  (at your option) any later version.
11  *
12  *  This driver is distributed in the hope that it will be useful,
13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  *  GNU General Public License for more details.
16  *
17  *  You should have received a copy of the GNU General Public License
18  *  along with this program; if not, write to the Free Software
19  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
20  */
21 
22 #include <linux/init.h>
23 #include <linux/delay.h>
24 #include <linux/slab.h>
25 #include <linux/mutex.h>
26 #include <linux/module.h>
27 #include <linux/pm.h>
28 #include <linux/pm_runtime.h>
29 #include <sound/core.h>
30 #include "hda_codec.h"
31 #include <sound/asoundef.h>
32 #include <sound/tlv.h>
33 #include <sound/initval.h>
34 #include <sound/jack.h>
35 #include "hda_local.h"
36 #include "hda_beep.h"
37 #include "hda_jack.h"
38 #include <sound/hda_hwdep.h>
39 
40 #define codec_in_pm(codec)		snd_hdac_is_in_pm(&codec->core)
41 #define hda_codec_is_power_on(codec)	snd_hdac_is_power_on(&codec->core)
42 #define codec_has_epss(codec) \
43 	((codec)->core.power_caps & AC_PWRST_EPSS)
44 #define codec_has_clkstop(codec) \
45 	((codec)->core.power_caps & AC_PWRST_CLKSTOP)
46 
47 /*
48  * Send and receive a verb - passed to exec_verb override for hdac_device
49  */
50 static int codec_exec_verb(struct hdac_device *dev, unsigned int cmd,
51 			   unsigned int flags, unsigned int *res)
52 {
53 	struct hda_codec *codec = container_of(dev, struct hda_codec, core);
54 	struct hda_bus *bus = codec->bus;
55 	int err;
56 
57 	if (cmd == ~0)
58 		return -1;
59 
60  again:
61 	snd_hda_power_up_pm(codec);
62 	mutex_lock(&bus->core.cmd_mutex);
63 	if (flags & HDA_RW_NO_RESPONSE_FALLBACK)
64 		bus->no_response_fallback = 1;
65 	err = snd_hdac_bus_exec_verb_unlocked(&bus->core, codec->core.addr,
66 					      cmd, res);
67 	bus->no_response_fallback = 0;
68 	mutex_unlock(&bus->core.cmd_mutex);
69 	snd_hda_power_down_pm(codec);
70 	if (!codec_in_pm(codec) && res && err == -EAGAIN) {
71 		if (bus->response_reset) {
72 			codec_dbg(codec,
73 				  "resetting BUS due to fatal communication error\n");
74 			snd_hda_bus_reset(bus);
75 		}
76 		goto again;
77 	}
78 	/* clear reset-flag when the communication gets recovered */
79 	if (!err || codec_in_pm(codec))
80 		bus->response_reset = 0;
81 	return err;
82 }
83 
84 /**
85  * snd_hda_sequence_write - sequence writes
86  * @codec: the HDA codec
87  * @seq: VERB array to send
88  *
89  * Send the commands sequentially from the given array.
90  * The array must be terminated with NID=0.
91  */
92 void snd_hda_sequence_write(struct hda_codec *codec, const struct hda_verb *seq)
93 {
94 	for (; seq->nid; seq++)
95 		snd_hda_codec_write(codec, seq->nid, 0, seq->verb, seq->param);
96 }
97 EXPORT_SYMBOL_GPL(snd_hda_sequence_write);
98 
99 /* connection list element */
100 struct hda_conn_list {
101 	struct list_head list;
102 	int len;
103 	hda_nid_t nid;
104 	hda_nid_t conns[0];
105 };
106 
107 /* look up the cached results */
108 static struct hda_conn_list *
109 lookup_conn_list(struct hda_codec *codec, hda_nid_t nid)
110 {
111 	struct hda_conn_list *p;
112 	list_for_each_entry(p, &codec->conn_list, list) {
113 		if (p->nid == nid)
114 			return p;
115 	}
116 	return NULL;
117 }
118 
119 static int add_conn_list(struct hda_codec *codec, hda_nid_t nid, int len,
120 			 const hda_nid_t *list)
121 {
122 	struct hda_conn_list *p;
123 
124 	p = kmalloc(sizeof(*p) + len * sizeof(hda_nid_t), GFP_KERNEL);
125 	if (!p)
126 		return -ENOMEM;
127 	p->len = len;
128 	p->nid = nid;
129 	memcpy(p->conns, list, len * sizeof(hda_nid_t));
130 	list_add(&p->list, &codec->conn_list);
131 	return 0;
132 }
133 
134 static void remove_conn_list(struct hda_codec *codec)
135 {
136 	while (!list_empty(&codec->conn_list)) {
137 		struct hda_conn_list *p;
138 		p = list_first_entry(&codec->conn_list, typeof(*p), list);
139 		list_del(&p->list);
140 		kfree(p);
141 	}
142 }
143 
144 /* read the connection and add to the cache */
145 static int read_and_add_raw_conns(struct hda_codec *codec, hda_nid_t nid)
146 {
147 	hda_nid_t list[32];
148 	hda_nid_t *result = list;
149 	int len;
150 
151 	len = snd_hda_get_raw_connections(codec, nid, list, ARRAY_SIZE(list));
152 	if (len == -ENOSPC) {
153 		len = snd_hda_get_num_raw_conns(codec, nid);
154 		result = kmalloc_array(len, sizeof(hda_nid_t), GFP_KERNEL);
155 		if (!result)
156 			return -ENOMEM;
157 		len = snd_hda_get_raw_connections(codec, nid, result, len);
158 	}
159 	if (len >= 0)
160 		len = snd_hda_override_conn_list(codec, nid, len, result);
161 	if (result != list)
162 		kfree(result);
163 	return len;
164 }
165 
166 /**
167  * snd_hda_get_conn_list - get connection list
168  * @codec: the HDA codec
169  * @nid: NID to parse
170  * @listp: the pointer to store NID list
171  *
172  * Parses the connection list of the given widget and stores the pointer
173  * to the list of NIDs.
174  *
175  * Returns the number of connections, or a negative error code.
176  *
177  * Note that the returned pointer isn't protected against the list
178  * modification.  If snd_hda_override_conn_list() might be called
179  * concurrently, protect with a mutex appropriately.
180  */
181 int snd_hda_get_conn_list(struct hda_codec *codec, hda_nid_t nid,
182 			  const hda_nid_t **listp)
183 {
184 	bool added = false;
185 
186 	for (;;) {
187 		int err;
188 		const struct hda_conn_list *p;
189 
190 		/* if the connection-list is already cached, read it */
191 		p = lookup_conn_list(codec, nid);
192 		if (p) {
193 			if (listp)
194 				*listp = p->conns;
195 			return p->len;
196 		}
197 		if (snd_BUG_ON(added))
198 			return -EINVAL;
199 
200 		err = read_and_add_raw_conns(codec, nid);
201 		if (err < 0)
202 			return err;
203 		added = true;
204 	}
205 }
206 EXPORT_SYMBOL_GPL(snd_hda_get_conn_list);
207 
208 /**
209  * snd_hda_get_connections - copy connection list
210  * @codec: the HDA codec
211  * @nid: NID to parse
212  * @conn_list: connection list array; when NULL, checks only the size
213  * @max_conns: max. number of connections to store
214  *
215  * Parses the connection list of the given widget and stores the list
216  * of NIDs.
217  *
218  * Returns the number of connections, or a negative error code.
219  */
220 int snd_hda_get_connections(struct hda_codec *codec, hda_nid_t nid,
221 			    hda_nid_t *conn_list, int max_conns)
222 {
223 	const hda_nid_t *list;
224 	int len = snd_hda_get_conn_list(codec, nid, &list);
225 
226 	if (len > 0 && conn_list) {
227 		if (len > max_conns) {
228 			codec_err(codec, "Too many connections %d for NID 0x%x\n",
229 				   len, nid);
230 			return -EINVAL;
231 		}
232 		memcpy(conn_list, list, len * sizeof(hda_nid_t));
233 	}
234 
235 	return len;
236 }
237 EXPORT_SYMBOL_GPL(snd_hda_get_connections);
238 
239 /**
240  * snd_hda_override_conn_list - add/modify the connection-list to cache
241  * @codec: the HDA codec
242  * @nid: NID to parse
243  * @len: number of connection list entries
244  * @list: the list of connection entries
245  *
246  * Add or modify the given connection-list to the cache.  If the corresponding
247  * cache already exists, invalidate it and append a new one.
248  *
249  * Returns zero or a negative error code.
250  */
251 int snd_hda_override_conn_list(struct hda_codec *codec, hda_nid_t nid, int len,
252 			       const hda_nid_t *list)
253 {
254 	struct hda_conn_list *p;
255 
256 	p = lookup_conn_list(codec, nid);
257 	if (p) {
258 		list_del(&p->list);
259 		kfree(p);
260 	}
261 
262 	return add_conn_list(codec, nid, len, list);
263 }
264 EXPORT_SYMBOL_GPL(snd_hda_override_conn_list);
265 
266 /**
267  * snd_hda_get_conn_index - get the connection index of the given NID
268  * @codec: the HDA codec
269  * @mux: NID containing the list
270  * @nid: NID to select
271  * @recursive: 1 when searching NID recursively, otherwise 0
272  *
273  * Parses the connection list of the widget @mux and checks whether the
274  * widget @nid is present.  If it is, return the connection index.
275  * Otherwise it returns -1.
276  */
277 int snd_hda_get_conn_index(struct hda_codec *codec, hda_nid_t mux,
278 			   hda_nid_t nid, int recursive)
279 {
280 	const hda_nid_t *conn;
281 	int i, nums;
282 
283 	nums = snd_hda_get_conn_list(codec, mux, &conn);
284 	for (i = 0; i < nums; i++)
285 		if (conn[i] == nid)
286 			return i;
287 	if (!recursive)
288 		return -1;
289 	if (recursive > 10) {
290 		codec_dbg(codec, "too deep connection for 0x%x\n", nid);
291 		return -1;
292 	}
293 	recursive++;
294 	for (i = 0; i < nums; i++) {
295 		unsigned int type = get_wcaps_type(get_wcaps(codec, conn[i]));
296 		if (type == AC_WID_PIN || type == AC_WID_AUD_OUT)
297 			continue;
298 		if (snd_hda_get_conn_index(codec, conn[i], nid, recursive) >= 0)
299 			return i;
300 	}
301 	return -1;
302 }
303 EXPORT_SYMBOL_GPL(snd_hda_get_conn_index);
304 
305 /**
306  * snd_hda_get_num_devices - get DEVLIST_LEN parameter of the given widget
307  *  @codec: the HDA codec
308  *  @nid: NID of the pin to parse
309  *
310  * Get the device entry number on the given widget. This is a feature of
311  * DP MST audio. Each pin can have several device entries in it.
312  */
313 unsigned int snd_hda_get_num_devices(struct hda_codec *codec, hda_nid_t nid)
314 {
315 	unsigned int wcaps = get_wcaps(codec, nid);
316 	unsigned int parm;
317 
318 	if (!codec->dp_mst || !(wcaps & AC_WCAP_DIGITAL) ||
319 	    get_wcaps_type(wcaps) != AC_WID_PIN)
320 		return 0;
321 
322 	parm = snd_hdac_read_parm_uncached(&codec->core, nid, AC_PAR_DEVLIST_LEN);
323 	if (parm == -1)
324 		parm = 0;
325 	return parm & AC_DEV_LIST_LEN_MASK;
326 }
327 EXPORT_SYMBOL_GPL(snd_hda_get_num_devices);
328 
329 /**
330  * snd_hda_get_devices - copy device list without cache
331  * @codec: the HDA codec
332  * @nid: NID of the pin to parse
333  * @dev_list: device list array
334  * @max_devices: max. number of devices to store
335  *
336  * Copy the device list. This info is dynamic and so not cached.
337  * Currently called only from hda_proc.c, so not exported.
338  */
339 int snd_hda_get_devices(struct hda_codec *codec, hda_nid_t nid,
340 			u8 *dev_list, int max_devices)
341 {
342 	unsigned int parm;
343 	int i, dev_len, devices;
344 
345 	parm = snd_hda_get_num_devices(codec, nid);
346 	if (!parm)	/* not multi-stream capable */
347 		return 0;
348 
349 	dev_len = parm + 1;
350 	dev_len = dev_len < max_devices ? dev_len : max_devices;
351 
352 	devices = 0;
353 	while (devices < dev_len) {
354 		if (snd_hdac_read(&codec->core, nid,
355 				  AC_VERB_GET_DEVICE_LIST, devices, &parm))
356 			break; /* error */
357 
358 		for (i = 0; i < 8; i++) {
359 			dev_list[devices] = (u8)parm;
360 			parm >>= 4;
361 			devices++;
362 			if (devices >= dev_len)
363 				break;
364 		}
365 	}
366 	return devices;
367 }
368 
369 /**
370  * snd_hda_get_dev_select - get device entry select on the pin
371  * @codec: the HDA codec
372  * @nid: NID of the pin to get device entry select
373  *
374  * Get the devcie entry select on the pin. Return the device entry
375  * id selected on the pin. Return 0 means the first device entry
376  * is selected or MST is not supported.
377  */
378 int snd_hda_get_dev_select(struct hda_codec *codec, hda_nid_t nid)
379 {
380 	/* not support dp_mst will always return 0, using first dev_entry */
381 	if (!codec->dp_mst)
382 		return 0;
383 
384 	return snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_DEVICE_SEL, 0);
385 }
386 EXPORT_SYMBOL_GPL(snd_hda_get_dev_select);
387 
388 /**
389  * snd_hda_set_dev_select - set device entry select on the pin
390  * @codec: the HDA codec
391  * @nid: NID of the pin to set device entry select
392  * @dev_id: device entry id to be set
393  *
394  * Set the device entry select on the pin nid.
395  */
396 int snd_hda_set_dev_select(struct hda_codec *codec, hda_nid_t nid, int dev_id)
397 {
398 	int ret, num_devices;
399 
400 	/* not support dp_mst will always return 0, using first dev_entry */
401 	if (!codec->dp_mst)
402 		return 0;
403 
404 	/* AC_PAR_DEVLIST_LEN is 0 based. */
405 	num_devices = snd_hda_get_num_devices(codec, nid) + 1;
406 	/* If Device List Length is 0 (num_device = 1),
407 	 * the pin is not multi stream capable.
408 	 * Do nothing in this case.
409 	 */
410 	if (num_devices == 1)
411 		return 0;
412 
413 	/* Behavior of setting index being equal to or greater than
414 	 * Device List Length is not predictable
415 	 */
416 	if (num_devices <= dev_id)
417 		return -EINVAL;
418 
419 	ret = snd_hda_codec_write(codec, nid, 0,
420 			AC_VERB_SET_DEVICE_SEL, dev_id);
421 
422 	return ret;
423 }
424 EXPORT_SYMBOL_GPL(snd_hda_set_dev_select);
425 
426 /*
427  * read widget caps for each widget and store in cache
428  */
429 static int read_widget_caps(struct hda_codec *codec, hda_nid_t fg_node)
430 {
431 	int i;
432 	hda_nid_t nid;
433 
434 	codec->wcaps = kmalloc_array(codec->core.num_nodes, 4, GFP_KERNEL);
435 	if (!codec->wcaps)
436 		return -ENOMEM;
437 	nid = codec->core.start_nid;
438 	for (i = 0; i < codec->core.num_nodes; i++, nid++)
439 		codec->wcaps[i] = snd_hdac_read_parm_uncached(&codec->core,
440 					nid, AC_PAR_AUDIO_WIDGET_CAP);
441 	return 0;
442 }
443 
444 /* read all pin default configurations and save codec->init_pins */
445 static int read_pin_defaults(struct hda_codec *codec)
446 {
447 	hda_nid_t nid;
448 
449 	for_each_hda_codec_node(nid, codec) {
450 		struct hda_pincfg *pin;
451 		unsigned int wcaps = get_wcaps(codec, nid);
452 		unsigned int wid_type = get_wcaps_type(wcaps);
453 		if (wid_type != AC_WID_PIN)
454 			continue;
455 		pin = snd_array_new(&codec->init_pins);
456 		if (!pin)
457 			return -ENOMEM;
458 		pin->nid = nid;
459 		pin->cfg = snd_hda_codec_read(codec, nid, 0,
460 					      AC_VERB_GET_CONFIG_DEFAULT, 0);
461 		/*
462 		 * all device entries are the same widget control so far
463 		 * fixme: if any codec is different, need fix here
464 		 */
465 		pin->ctrl = snd_hda_codec_read(codec, nid, 0,
466 					       AC_VERB_GET_PIN_WIDGET_CONTROL,
467 					       0);
468 	}
469 	return 0;
470 }
471 
472 /* look up the given pin config list and return the item matching with NID */
473 static struct hda_pincfg *look_up_pincfg(struct hda_codec *codec,
474 					 struct snd_array *array,
475 					 hda_nid_t nid)
476 {
477 	struct hda_pincfg *pin;
478 	int i;
479 
480 	snd_array_for_each(array, i, pin) {
481 		if (pin->nid == nid)
482 			return pin;
483 	}
484 	return NULL;
485 }
486 
487 /* set the current pin config value for the given NID.
488  * the value is cached, and read via snd_hda_codec_get_pincfg()
489  */
490 int snd_hda_add_pincfg(struct hda_codec *codec, struct snd_array *list,
491 		       hda_nid_t nid, unsigned int cfg)
492 {
493 	struct hda_pincfg *pin;
494 
495 	/* the check below may be invalid when pins are added by a fixup
496 	 * dynamically (e.g. via snd_hda_codec_update_widgets()), so disabled
497 	 * for now
498 	 */
499 	/*
500 	if (get_wcaps_type(get_wcaps(codec, nid)) != AC_WID_PIN)
501 		return -EINVAL;
502 	*/
503 
504 	pin = look_up_pincfg(codec, list, nid);
505 	if (!pin) {
506 		pin = snd_array_new(list);
507 		if (!pin)
508 			return -ENOMEM;
509 		pin->nid = nid;
510 	}
511 	pin->cfg = cfg;
512 	return 0;
513 }
514 
515 /**
516  * snd_hda_codec_set_pincfg - Override a pin default configuration
517  * @codec: the HDA codec
518  * @nid: NID to set the pin config
519  * @cfg: the pin default config value
520  *
521  * Override a pin default configuration value in the cache.
522  * This value can be read by snd_hda_codec_get_pincfg() in a higher
523  * priority than the real hardware value.
524  */
525 int snd_hda_codec_set_pincfg(struct hda_codec *codec,
526 			     hda_nid_t nid, unsigned int cfg)
527 {
528 	return snd_hda_add_pincfg(codec, &codec->driver_pins, nid, cfg);
529 }
530 EXPORT_SYMBOL_GPL(snd_hda_codec_set_pincfg);
531 
532 /**
533  * snd_hda_codec_get_pincfg - Obtain a pin-default configuration
534  * @codec: the HDA codec
535  * @nid: NID to get the pin config
536  *
537  * Get the current pin config value of the given pin NID.
538  * If the pincfg value is cached or overridden via sysfs or driver,
539  * returns the cached value.
540  */
541 unsigned int snd_hda_codec_get_pincfg(struct hda_codec *codec, hda_nid_t nid)
542 {
543 	struct hda_pincfg *pin;
544 
545 #ifdef CONFIG_SND_HDA_RECONFIG
546 	{
547 		unsigned int cfg = 0;
548 		mutex_lock(&codec->user_mutex);
549 		pin = look_up_pincfg(codec, &codec->user_pins, nid);
550 		if (pin)
551 			cfg = pin->cfg;
552 		mutex_unlock(&codec->user_mutex);
553 		if (cfg)
554 			return cfg;
555 	}
556 #endif
557 	pin = look_up_pincfg(codec, &codec->driver_pins, nid);
558 	if (pin)
559 		return pin->cfg;
560 	pin = look_up_pincfg(codec, &codec->init_pins, nid);
561 	if (pin)
562 		return pin->cfg;
563 	return 0;
564 }
565 EXPORT_SYMBOL_GPL(snd_hda_codec_get_pincfg);
566 
567 /**
568  * snd_hda_codec_set_pin_target - remember the current pinctl target value
569  * @codec: the HDA codec
570  * @nid: pin NID
571  * @val: assigned pinctl value
572  *
573  * This function stores the given value to a pinctl target value in the
574  * pincfg table.  This isn't always as same as the actually written value
575  * but can be referred at any time via snd_hda_codec_get_pin_target().
576  */
577 int snd_hda_codec_set_pin_target(struct hda_codec *codec, hda_nid_t nid,
578 				 unsigned int val)
579 {
580 	struct hda_pincfg *pin;
581 
582 	pin = look_up_pincfg(codec, &codec->init_pins, nid);
583 	if (!pin)
584 		return -EINVAL;
585 	pin->target = val;
586 	return 0;
587 }
588 EXPORT_SYMBOL_GPL(snd_hda_codec_set_pin_target);
589 
590 /**
591  * snd_hda_codec_get_pin_target - return the current pinctl target value
592  * @codec: the HDA codec
593  * @nid: pin NID
594  */
595 int snd_hda_codec_get_pin_target(struct hda_codec *codec, hda_nid_t nid)
596 {
597 	struct hda_pincfg *pin;
598 
599 	pin = look_up_pincfg(codec, &codec->init_pins, nid);
600 	if (!pin)
601 		return 0;
602 	return pin->target;
603 }
604 EXPORT_SYMBOL_GPL(snd_hda_codec_get_pin_target);
605 
606 /**
607  * snd_hda_shutup_pins - Shut up all pins
608  * @codec: the HDA codec
609  *
610  * Clear all pin controls to shup up before suspend for avoiding click noise.
611  * The controls aren't cached so that they can be resumed properly.
612  */
613 void snd_hda_shutup_pins(struct hda_codec *codec)
614 {
615 	const struct hda_pincfg *pin;
616 	int i;
617 
618 	/* don't shut up pins when unloading the driver; otherwise it breaks
619 	 * the default pin setup at the next load of the driver
620 	 */
621 	if (codec->bus->shutdown)
622 		return;
623 	snd_array_for_each(&codec->init_pins, i, pin) {
624 		/* use read here for syncing after issuing each verb */
625 		snd_hda_codec_read(codec, pin->nid, 0,
626 				   AC_VERB_SET_PIN_WIDGET_CONTROL, 0);
627 	}
628 	codec->pins_shutup = 1;
629 }
630 EXPORT_SYMBOL_GPL(snd_hda_shutup_pins);
631 
632 #ifdef CONFIG_PM
633 /* Restore the pin controls cleared previously via snd_hda_shutup_pins() */
634 static void restore_shutup_pins(struct hda_codec *codec)
635 {
636 	const struct hda_pincfg *pin;
637 	int i;
638 
639 	if (!codec->pins_shutup)
640 		return;
641 	if (codec->bus->shutdown)
642 		return;
643 	snd_array_for_each(&codec->init_pins, i, pin) {
644 		snd_hda_codec_write(codec, pin->nid, 0,
645 				    AC_VERB_SET_PIN_WIDGET_CONTROL,
646 				    pin->ctrl);
647 	}
648 	codec->pins_shutup = 0;
649 }
650 #endif
651 
652 static void hda_jackpoll_work(struct work_struct *work)
653 {
654 	struct hda_codec *codec =
655 		container_of(work, struct hda_codec, jackpoll_work.work);
656 
657 	snd_hda_jack_set_dirty_all(codec);
658 	snd_hda_jack_poll_all(codec);
659 
660 	if (!codec->jackpoll_interval)
661 		return;
662 
663 	schedule_delayed_work(&codec->jackpoll_work,
664 			      codec->jackpoll_interval);
665 }
666 
667 /* release all pincfg lists */
668 static void free_init_pincfgs(struct hda_codec *codec)
669 {
670 	snd_array_free(&codec->driver_pins);
671 #ifdef CONFIG_SND_HDA_RECONFIG
672 	snd_array_free(&codec->user_pins);
673 #endif
674 	snd_array_free(&codec->init_pins);
675 }
676 
677 /*
678  * audio-converter setup caches
679  */
680 struct hda_cvt_setup {
681 	hda_nid_t nid;
682 	u8 stream_tag;
683 	u8 channel_id;
684 	u16 format_id;
685 	unsigned char active;	/* cvt is currently used */
686 	unsigned char dirty;	/* setups should be cleared */
687 };
688 
689 /* get or create a cache entry for the given audio converter NID */
690 static struct hda_cvt_setup *
691 get_hda_cvt_setup(struct hda_codec *codec, hda_nid_t nid)
692 {
693 	struct hda_cvt_setup *p;
694 	int i;
695 
696 	snd_array_for_each(&codec->cvt_setups, i, p) {
697 		if (p->nid == nid)
698 			return p;
699 	}
700 	p = snd_array_new(&codec->cvt_setups);
701 	if (p)
702 		p->nid = nid;
703 	return p;
704 }
705 
706 /*
707  * PCM device
708  */
709 static void release_pcm(struct kref *kref)
710 {
711 	struct hda_pcm *pcm = container_of(kref, struct hda_pcm, kref);
712 
713 	if (pcm->pcm)
714 		snd_device_free(pcm->codec->card, pcm->pcm);
715 	clear_bit(pcm->device, pcm->codec->bus->pcm_dev_bits);
716 	kfree(pcm->name);
717 	kfree(pcm);
718 }
719 
720 void snd_hda_codec_pcm_put(struct hda_pcm *pcm)
721 {
722 	kref_put(&pcm->kref, release_pcm);
723 }
724 EXPORT_SYMBOL_GPL(snd_hda_codec_pcm_put);
725 
726 struct hda_pcm *snd_hda_codec_pcm_new(struct hda_codec *codec,
727 				      const char *fmt, ...)
728 {
729 	struct hda_pcm *pcm;
730 	va_list args;
731 
732 	pcm = kzalloc(sizeof(*pcm), GFP_KERNEL);
733 	if (!pcm)
734 		return NULL;
735 
736 	pcm->codec = codec;
737 	kref_init(&pcm->kref);
738 	va_start(args, fmt);
739 	pcm->name = kvasprintf(GFP_KERNEL, fmt, args);
740 	va_end(args);
741 	if (!pcm->name) {
742 		kfree(pcm);
743 		return NULL;
744 	}
745 
746 	list_add_tail(&pcm->list, &codec->pcm_list_head);
747 	return pcm;
748 }
749 EXPORT_SYMBOL_GPL(snd_hda_codec_pcm_new);
750 
751 /*
752  * codec destructor
753  */
754 static void codec_release_pcms(struct hda_codec *codec)
755 {
756 	struct hda_pcm *pcm, *n;
757 
758 	list_for_each_entry_safe(pcm, n, &codec->pcm_list_head, list) {
759 		list_del_init(&pcm->list);
760 		if (pcm->pcm)
761 			snd_device_disconnect(codec->card, pcm->pcm);
762 		snd_hda_codec_pcm_put(pcm);
763 	}
764 }
765 
766 void snd_hda_codec_cleanup_for_unbind(struct hda_codec *codec)
767 {
768 	if (codec->registered) {
769 		/* pm_runtime_put() is called in snd_hdac_device_exit() */
770 		pm_runtime_get_noresume(hda_codec_dev(codec));
771 		pm_runtime_disable(hda_codec_dev(codec));
772 		codec->registered = 0;
773 	}
774 
775 	cancel_delayed_work_sync(&codec->jackpoll_work);
776 	if (!codec->in_freeing)
777 		snd_hda_ctls_clear(codec);
778 	codec_release_pcms(codec);
779 	snd_hda_detach_beep_device(codec);
780 	memset(&codec->patch_ops, 0, sizeof(codec->patch_ops));
781 	snd_hda_jack_tbl_clear(codec);
782 	codec->proc_widget_hook = NULL;
783 	codec->spec = NULL;
784 
785 	/* free only driver_pins so that init_pins + user_pins are restored */
786 	snd_array_free(&codec->driver_pins);
787 	snd_array_free(&codec->cvt_setups);
788 	snd_array_free(&codec->spdif_out);
789 	snd_array_free(&codec->verbs);
790 	codec->preset = NULL;
791 	codec->slave_dig_outs = NULL;
792 	codec->spdif_status_reset = 0;
793 	snd_array_free(&codec->mixers);
794 	snd_array_free(&codec->nids);
795 	remove_conn_list(codec);
796 	snd_hdac_regmap_exit(&codec->core);
797 }
798 
799 static unsigned int hda_set_power_state(struct hda_codec *codec,
800 				unsigned int power_state);
801 
802 /* also called from hda_bind.c */
803 void snd_hda_codec_register(struct hda_codec *codec)
804 {
805 	if (codec->registered)
806 		return;
807 	if (device_is_registered(hda_codec_dev(codec))) {
808 		snd_hda_register_beep_device(codec);
809 		snd_hdac_link_power(&codec->core, true);
810 		pm_runtime_enable(hda_codec_dev(codec));
811 		/* it was powered up in snd_hda_codec_new(), now all done */
812 		snd_hda_power_down(codec);
813 		codec->registered = 1;
814 	}
815 }
816 
817 static int snd_hda_codec_dev_register(struct snd_device *device)
818 {
819 	snd_hda_codec_register(device->device_data);
820 	return 0;
821 }
822 
823 static int snd_hda_codec_dev_disconnect(struct snd_device *device)
824 {
825 	struct hda_codec *codec = device->device_data;
826 
827 	snd_hda_detach_beep_device(codec);
828 	return 0;
829 }
830 
831 static int snd_hda_codec_dev_free(struct snd_device *device)
832 {
833 	struct hda_codec *codec = device->device_data;
834 
835 	codec->in_freeing = 1;
836 	snd_hdac_device_unregister(&codec->core);
837 	snd_hdac_link_power(&codec->core, false);
838 	put_device(hda_codec_dev(codec));
839 	return 0;
840 }
841 
842 static void snd_hda_codec_dev_release(struct device *dev)
843 {
844 	struct hda_codec *codec = dev_to_hda_codec(dev);
845 
846 	free_init_pincfgs(codec);
847 	snd_hdac_device_exit(&codec->core);
848 	snd_hda_sysfs_clear(codec);
849 	kfree(codec->modelname);
850 	kfree(codec->wcaps);
851 	kfree(codec);
852 }
853 
854 #define DEV_NAME_LEN 31
855 
856 static int snd_hda_codec_device_init(struct hda_bus *bus, struct snd_card *card,
857 			unsigned int codec_addr, struct hda_codec **codecp)
858 {
859 	char name[DEV_NAME_LEN];
860 	struct hda_codec *codec;
861 	int err;
862 
863 	dev_dbg(card->dev, "%s: entry\n", __func__);
864 
865 	if (snd_BUG_ON(!bus))
866 		return -EINVAL;
867 	if (snd_BUG_ON(codec_addr > HDA_MAX_CODEC_ADDRESS))
868 		return -EINVAL;
869 
870 	codec = kzalloc(sizeof(*codec), GFP_KERNEL);
871 	if (!codec)
872 		return -ENOMEM;
873 
874 	sprintf(name, "hdaudioC%dD%d", card->number, codec_addr);
875 	err = snd_hdac_device_init(&codec->core, &bus->core, name, codec_addr);
876 	if (err < 0) {
877 		kfree(codec);
878 		return err;
879 	}
880 
881 	codec->core.type = HDA_DEV_LEGACY;
882 	*codecp = codec;
883 
884 	return err;
885 }
886 
887 /**
888  * snd_hda_codec_new - create a HDA codec
889  * @bus: the bus to assign
890  * @codec_addr: the codec address
891  * @codecp: the pointer to store the generated codec
892  *
893  * Returns 0 if successful, or a negative error code.
894  */
895 int snd_hda_codec_new(struct hda_bus *bus, struct snd_card *card,
896 		      unsigned int codec_addr, struct hda_codec **codecp)
897 {
898 	int ret;
899 
900 	ret = snd_hda_codec_device_init(bus, card, codec_addr, codecp);
901 	if (ret < 0)
902 		return ret;
903 
904 	return snd_hda_codec_device_new(bus, card, codec_addr, *codecp);
905 }
906 EXPORT_SYMBOL_GPL(snd_hda_codec_new);
907 
908 int snd_hda_codec_device_new(struct hda_bus *bus, struct snd_card *card,
909 			unsigned int codec_addr, struct hda_codec *codec)
910 {
911 	char component[31];
912 	hda_nid_t fg;
913 	int err;
914 	static struct snd_device_ops dev_ops = {
915 		.dev_register = snd_hda_codec_dev_register,
916 		.dev_disconnect = snd_hda_codec_dev_disconnect,
917 		.dev_free = snd_hda_codec_dev_free,
918 	};
919 
920 	dev_dbg(card->dev, "%s: entry\n", __func__);
921 
922 	if (snd_BUG_ON(!bus))
923 		return -EINVAL;
924 	if (snd_BUG_ON(codec_addr > HDA_MAX_CODEC_ADDRESS))
925 		return -EINVAL;
926 
927 	codec->core.dev.release = snd_hda_codec_dev_release;
928 	codec->core.exec_verb = codec_exec_verb;
929 
930 	codec->bus = bus;
931 	codec->card = card;
932 	codec->addr = codec_addr;
933 	mutex_init(&codec->spdif_mutex);
934 	mutex_init(&codec->control_mutex);
935 	snd_array_init(&codec->mixers, sizeof(struct hda_nid_item), 32);
936 	snd_array_init(&codec->nids, sizeof(struct hda_nid_item), 32);
937 	snd_array_init(&codec->init_pins, sizeof(struct hda_pincfg), 16);
938 	snd_array_init(&codec->driver_pins, sizeof(struct hda_pincfg), 16);
939 	snd_array_init(&codec->cvt_setups, sizeof(struct hda_cvt_setup), 8);
940 	snd_array_init(&codec->spdif_out, sizeof(struct hda_spdif_out), 16);
941 	snd_array_init(&codec->jacktbl, sizeof(struct hda_jack_tbl), 16);
942 	snd_array_init(&codec->verbs, sizeof(struct hda_verb *), 8);
943 	INIT_LIST_HEAD(&codec->conn_list);
944 	INIT_LIST_HEAD(&codec->pcm_list_head);
945 
946 	INIT_DELAYED_WORK(&codec->jackpoll_work, hda_jackpoll_work);
947 	codec->depop_delay = -1;
948 	codec->fixup_id = HDA_FIXUP_ID_NOT_SET;
949 
950 #ifdef CONFIG_PM
951 	codec->power_jiffies = jiffies;
952 #endif
953 
954 	snd_hda_sysfs_init(codec);
955 
956 	if (codec->bus->modelname) {
957 		codec->modelname = kstrdup(codec->bus->modelname, GFP_KERNEL);
958 		if (!codec->modelname) {
959 			err = -ENOMEM;
960 			goto error;
961 		}
962 	}
963 
964 	fg = codec->core.afg ? codec->core.afg : codec->core.mfg;
965 	err = read_widget_caps(codec, fg);
966 	if (err < 0)
967 		goto error;
968 	err = read_pin_defaults(codec);
969 	if (err < 0)
970 		goto error;
971 
972 	/* power-up all before initialization */
973 	hda_set_power_state(codec, AC_PWRST_D0);
974 
975 	snd_hda_codec_proc_new(codec);
976 
977 	snd_hda_create_hwdep(codec);
978 
979 	sprintf(component, "HDA:%08x,%08x,%08x", codec->core.vendor_id,
980 		codec->core.subsystem_id, codec->core.revision_id);
981 	snd_component_add(card, component);
982 
983 	err = snd_device_new(card, SNDRV_DEV_CODEC, codec, &dev_ops);
984 	if (err < 0)
985 		goto error;
986 
987 	return 0;
988 
989  error:
990 	put_device(hda_codec_dev(codec));
991 	return err;
992 }
993 EXPORT_SYMBOL_GPL(snd_hda_codec_device_new);
994 
995 /**
996  * snd_hda_codec_update_widgets - Refresh widget caps and pin defaults
997  * @codec: the HDA codec
998  *
999  * Forcibly refresh the all widget caps and the init pin configurations of
1000  * the given codec.
1001  */
1002 int snd_hda_codec_update_widgets(struct hda_codec *codec)
1003 {
1004 	hda_nid_t fg;
1005 	int err;
1006 
1007 	err = snd_hdac_refresh_widgets(&codec->core, true);
1008 	if (err < 0)
1009 		return err;
1010 
1011 	/* Assume the function group node does not change,
1012 	 * only the widget nodes may change.
1013 	 */
1014 	kfree(codec->wcaps);
1015 	fg = codec->core.afg ? codec->core.afg : codec->core.mfg;
1016 	err = read_widget_caps(codec, fg);
1017 	if (err < 0)
1018 		return err;
1019 
1020 	snd_array_free(&codec->init_pins);
1021 	err = read_pin_defaults(codec);
1022 
1023 	return err;
1024 }
1025 EXPORT_SYMBOL_GPL(snd_hda_codec_update_widgets);
1026 
1027 /* update the stream-id if changed */
1028 static void update_pcm_stream_id(struct hda_codec *codec,
1029 				 struct hda_cvt_setup *p, hda_nid_t nid,
1030 				 u32 stream_tag, int channel_id)
1031 {
1032 	unsigned int oldval, newval;
1033 
1034 	if (p->stream_tag != stream_tag || p->channel_id != channel_id) {
1035 		oldval = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_CONV, 0);
1036 		newval = (stream_tag << 4) | channel_id;
1037 		if (oldval != newval)
1038 			snd_hda_codec_write(codec, nid, 0,
1039 					    AC_VERB_SET_CHANNEL_STREAMID,
1040 					    newval);
1041 		p->stream_tag = stream_tag;
1042 		p->channel_id = channel_id;
1043 	}
1044 }
1045 
1046 /* update the format-id if changed */
1047 static void update_pcm_format(struct hda_codec *codec, struct hda_cvt_setup *p,
1048 			      hda_nid_t nid, int format)
1049 {
1050 	unsigned int oldval;
1051 
1052 	if (p->format_id != format) {
1053 		oldval = snd_hda_codec_read(codec, nid, 0,
1054 					    AC_VERB_GET_STREAM_FORMAT, 0);
1055 		if (oldval != format) {
1056 			msleep(1);
1057 			snd_hda_codec_write(codec, nid, 0,
1058 					    AC_VERB_SET_STREAM_FORMAT,
1059 					    format);
1060 		}
1061 		p->format_id = format;
1062 	}
1063 }
1064 
1065 /**
1066  * snd_hda_codec_setup_stream - set up the codec for streaming
1067  * @codec: the CODEC to set up
1068  * @nid: the NID to set up
1069  * @stream_tag: stream tag to pass, it's between 0x1 and 0xf.
1070  * @channel_id: channel id to pass, zero based.
1071  * @format: stream format.
1072  */
1073 void snd_hda_codec_setup_stream(struct hda_codec *codec, hda_nid_t nid,
1074 				u32 stream_tag,
1075 				int channel_id, int format)
1076 {
1077 	struct hda_codec *c;
1078 	struct hda_cvt_setup *p;
1079 	int type;
1080 	int i;
1081 
1082 	if (!nid)
1083 		return;
1084 
1085 	codec_dbg(codec,
1086 		  "hda_codec_setup_stream: NID=0x%x, stream=0x%x, channel=%d, format=0x%x\n",
1087 		  nid, stream_tag, channel_id, format);
1088 	p = get_hda_cvt_setup(codec, nid);
1089 	if (!p)
1090 		return;
1091 
1092 	if (codec->patch_ops.stream_pm)
1093 		codec->patch_ops.stream_pm(codec, nid, true);
1094 	if (codec->pcm_format_first)
1095 		update_pcm_format(codec, p, nid, format);
1096 	update_pcm_stream_id(codec, p, nid, stream_tag, channel_id);
1097 	if (!codec->pcm_format_first)
1098 		update_pcm_format(codec, p, nid, format);
1099 
1100 	p->active = 1;
1101 	p->dirty = 0;
1102 
1103 	/* make other inactive cvts with the same stream-tag dirty */
1104 	type = get_wcaps_type(get_wcaps(codec, nid));
1105 	list_for_each_codec(c, codec->bus) {
1106 		snd_array_for_each(&c->cvt_setups, i, p) {
1107 			if (!p->active && p->stream_tag == stream_tag &&
1108 			    get_wcaps_type(get_wcaps(c, p->nid)) == type)
1109 				p->dirty = 1;
1110 		}
1111 	}
1112 }
1113 EXPORT_SYMBOL_GPL(snd_hda_codec_setup_stream);
1114 
1115 static void really_cleanup_stream(struct hda_codec *codec,
1116 				  struct hda_cvt_setup *q);
1117 
1118 /**
1119  * __snd_hda_codec_cleanup_stream - clean up the codec for closing
1120  * @codec: the CODEC to clean up
1121  * @nid: the NID to clean up
1122  * @do_now: really clean up the stream instead of clearing the active flag
1123  */
1124 void __snd_hda_codec_cleanup_stream(struct hda_codec *codec, hda_nid_t nid,
1125 				    int do_now)
1126 {
1127 	struct hda_cvt_setup *p;
1128 
1129 	if (!nid)
1130 		return;
1131 
1132 	if (codec->no_sticky_stream)
1133 		do_now = 1;
1134 
1135 	codec_dbg(codec, "hda_codec_cleanup_stream: NID=0x%x\n", nid);
1136 	p = get_hda_cvt_setup(codec, nid);
1137 	if (p) {
1138 		/* here we just clear the active flag when do_now isn't set;
1139 		 * actual clean-ups will be done later in
1140 		 * purify_inactive_streams() called from snd_hda_codec_prpapre()
1141 		 */
1142 		if (do_now)
1143 			really_cleanup_stream(codec, p);
1144 		else
1145 			p->active = 0;
1146 	}
1147 }
1148 EXPORT_SYMBOL_GPL(__snd_hda_codec_cleanup_stream);
1149 
1150 static void really_cleanup_stream(struct hda_codec *codec,
1151 				  struct hda_cvt_setup *q)
1152 {
1153 	hda_nid_t nid = q->nid;
1154 	if (q->stream_tag || q->channel_id)
1155 		snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_CHANNEL_STREAMID, 0);
1156 	if (q->format_id)
1157 		snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_STREAM_FORMAT, 0
1158 );
1159 	memset(q, 0, sizeof(*q));
1160 	q->nid = nid;
1161 	if (codec->patch_ops.stream_pm)
1162 		codec->patch_ops.stream_pm(codec, nid, false);
1163 }
1164 
1165 /* clean up the all conflicting obsolete streams */
1166 static void purify_inactive_streams(struct hda_codec *codec)
1167 {
1168 	struct hda_codec *c;
1169 	struct hda_cvt_setup *p;
1170 	int i;
1171 
1172 	list_for_each_codec(c, codec->bus) {
1173 		snd_array_for_each(&c->cvt_setups, i, p) {
1174 			if (p->dirty)
1175 				really_cleanup_stream(c, p);
1176 		}
1177 	}
1178 }
1179 
1180 #ifdef CONFIG_PM
1181 /* clean up all streams; called from suspend */
1182 static void hda_cleanup_all_streams(struct hda_codec *codec)
1183 {
1184 	struct hda_cvt_setup *p;
1185 	int i;
1186 
1187 	snd_array_for_each(&codec->cvt_setups, i, p) {
1188 		if (p->stream_tag)
1189 			really_cleanup_stream(codec, p);
1190 	}
1191 }
1192 #endif
1193 
1194 /*
1195  * amp access functions
1196  */
1197 
1198 /**
1199  * query_amp_caps - query AMP capabilities
1200  * @codec: the HD-auio codec
1201  * @nid: the NID to query
1202  * @direction: either #HDA_INPUT or #HDA_OUTPUT
1203  *
1204  * Query AMP capabilities for the given widget and direction.
1205  * Returns the obtained capability bits.
1206  *
1207  * When cap bits have been already read, this doesn't read again but
1208  * returns the cached value.
1209  */
1210 u32 query_amp_caps(struct hda_codec *codec, hda_nid_t nid, int direction)
1211 {
1212 	if (!(get_wcaps(codec, nid) & AC_WCAP_AMP_OVRD))
1213 		nid = codec->core.afg;
1214 	return snd_hda_param_read(codec, nid,
1215 				  direction == HDA_OUTPUT ?
1216 				  AC_PAR_AMP_OUT_CAP : AC_PAR_AMP_IN_CAP);
1217 }
1218 EXPORT_SYMBOL_GPL(query_amp_caps);
1219 
1220 /**
1221  * snd_hda_check_amp_caps - query AMP capabilities
1222  * @codec: the HD-audio codec
1223  * @nid: the NID to query
1224  * @dir: either #HDA_INPUT or #HDA_OUTPUT
1225  * @bits: bit mask to check the result
1226  *
1227  * Check whether the widget has the given amp capability for the direction.
1228  */
1229 bool snd_hda_check_amp_caps(struct hda_codec *codec, hda_nid_t nid,
1230 			   int dir, unsigned int bits)
1231 {
1232 	if (!nid)
1233 		return false;
1234 	if (get_wcaps(codec, nid) & (1 << (dir + 1)))
1235 		if (query_amp_caps(codec, nid, dir) & bits)
1236 			return true;
1237 	return false;
1238 }
1239 EXPORT_SYMBOL_GPL(snd_hda_check_amp_caps);
1240 
1241 /**
1242  * snd_hda_override_amp_caps - Override the AMP capabilities
1243  * @codec: the CODEC to clean up
1244  * @nid: the NID to clean up
1245  * @dir: either #HDA_INPUT or #HDA_OUTPUT
1246  * @caps: the capability bits to set
1247  *
1248  * Override the cached AMP caps bits value by the given one.
1249  * This function is useful if the driver needs to adjust the AMP ranges,
1250  * e.g. limit to 0dB, etc.
1251  *
1252  * Returns zero if successful or a negative error code.
1253  */
1254 int snd_hda_override_amp_caps(struct hda_codec *codec, hda_nid_t nid, int dir,
1255 			      unsigned int caps)
1256 {
1257 	unsigned int parm;
1258 
1259 	snd_hda_override_wcaps(codec, nid,
1260 			       get_wcaps(codec, nid) | AC_WCAP_AMP_OVRD);
1261 	parm = dir == HDA_OUTPUT ? AC_PAR_AMP_OUT_CAP : AC_PAR_AMP_IN_CAP;
1262 	return snd_hdac_override_parm(&codec->core, nid, parm, caps);
1263 }
1264 EXPORT_SYMBOL_GPL(snd_hda_override_amp_caps);
1265 
1266 /**
1267  * snd_hda_codec_amp_update - update the AMP mono value
1268  * @codec: HD-audio codec
1269  * @nid: NID to read the AMP value
1270  * @ch: channel to update (0 or 1)
1271  * @dir: #HDA_INPUT or #HDA_OUTPUT
1272  * @idx: the index value (only for input direction)
1273  * @mask: bit mask to set
1274  * @val: the bits value to set
1275  *
1276  * Update the AMP values for the given channel, direction and index.
1277  */
1278 int snd_hda_codec_amp_update(struct hda_codec *codec, hda_nid_t nid,
1279 			     int ch, int dir, int idx, int mask, int val)
1280 {
1281 	unsigned int cmd = snd_hdac_regmap_encode_amp(nid, ch, dir, idx);
1282 
1283 	/* enable fake mute if no h/w mute but min=mute */
1284 	if ((query_amp_caps(codec, nid, dir) &
1285 	     (AC_AMPCAP_MUTE | AC_AMPCAP_MIN_MUTE)) == AC_AMPCAP_MIN_MUTE)
1286 		cmd |= AC_AMP_FAKE_MUTE;
1287 	return snd_hdac_regmap_update_raw(&codec->core, cmd, mask, val);
1288 }
1289 EXPORT_SYMBOL_GPL(snd_hda_codec_amp_update);
1290 
1291 /**
1292  * snd_hda_codec_amp_stereo - update the AMP stereo values
1293  * @codec: HD-audio codec
1294  * @nid: NID to read the AMP value
1295  * @direction: #HDA_INPUT or #HDA_OUTPUT
1296  * @idx: the index value (only for input direction)
1297  * @mask: bit mask to set
1298  * @val: the bits value to set
1299  *
1300  * Update the AMP values like snd_hda_codec_amp_update(), but for a
1301  * stereo widget with the same mask and value.
1302  */
1303 int snd_hda_codec_amp_stereo(struct hda_codec *codec, hda_nid_t nid,
1304 			     int direction, int idx, int mask, int val)
1305 {
1306 	int ch, ret = 0;
1307 
1308 	if (snd_BUG_ON(mask & ~0xff))
1309 		mask &= 0xff;
1310 	for (ch = 0; ch < 2; ch++)
1311 		ret |= snd_hda_codec_amp_update(codec, nid, ch, direction,
1312 						idx, mask, val);
1313 	return ret;
1314 }
1315 EXPORT_SYMBOL_GPL(snd_hda_codec_amp_stereo);
1316 
1317 /**
1318  * snd_hda_codec_amp_init - initialize the AMP value
1319  * @codec: the HDA codec
1320  * @nid: NID to read the AMP value
1321  * @ch: channel (left=0 or right=1)
1322  * @dir: #HDA_INPUT or #HDA_OUTPUT
1323  * @idx: the index value (only for input direction)
1324  * @mask: bit mask to set
1325  * @val: the bits value to set
1326  *
1327  * Works like snd_hda_codec_amp_update() but it writes the value only at
1328  * the first access.  If the amp was already initialized / updated beforehand,
1329  * this does nothing.
1330  */
1331 int snd_hda_codec_amp_init(struct hda_codec *codec, hda_nid_t nid, int ch,
1332 			   int dir, int idx, int mask, int val)
1333 {
1334 	int orig;
1335 
1336 	if (!codec->core.regmap)
1337 		return -EINVAL;
1338 	regcache_cache_only(codec->core.regmap, true);
1339 	orig = snd_hda_codec_amp_read(codec, nid, ch, dir, idx);
1340 	regcache_cache_only(codec->core.regmap, false);
1341 	if (orig >= 0)
1342 		return 0;
1343 	return snd_hda_codec_amp_update(codec, nid, ch, dir, idx, mask, val);
1344 }
1345 EXPORT_SYMBOL_GPL(snd_hda_codec_amp_init);
1346 
1347 /**
1348  * snd_hda_codec_amp_init_stereo - initialize the stereo AMP value
1349  * @codec: the HDA codec
1350  * @nid: NID to read the AMP value
1351  * @dir: #HDA_INPUT or #HDA_OUTPUT
1352  * @idx: the index value (only for input direction)
1353  * @mask: bit mask to set
1354  * @val: the bits value to set
1355  *
1356  * Call snd_hda_codec_amp_init() for both stereo channels.
1357  */
1358 int snd_hda_codec_amp_init_stereo(struct hda_codec *codec, hda_nid_t nid,
1359 				  int dir, int idx, int mask, int val)
1360 {
1361 	int ch, ret = 0;
1362 
1363 	if (snd_BUG_ON(mask & ~0xff))
1364 		mask &= 0xff;
1365 	for (ch = 0; ch < 2; ch++)
1366 		ret |= snd_hda_codec_amp_init(codec, nid, ch, dir,
1367 					      idx, mask, val);
1368 	return ret;
1369 }
1370 EXPORT_SYMBOL_GPL(snd_hda_codec_amp_init_stereo);
1371 
1372 static u32 get_amp_max_value(struct hda_codec *codec, hda_nid_t nid, int dir,
1373 			     unsigned int ofs)
1374 {
1375 	u32 caps = query_amp_caps(codec, nid, dir);
1376 	/* get num steps */
1377 	caps = (caps & AC_AMPCAP_NUM_STEPS) >> AC_AMPCAP_NUM_STEPS_SHIFT;
1378 	if (ofs < caps)
1379 		caps -= ofs;
1380 	return caps;
1381 }
1382 
1383 /**
1384  * snd_hda_mixer_amp_volume_info - Info callback for a standard AMP mixer
1385  * @kcontrol: referred ctl element
1386  * @uinfo: pointer to get/store the data
1387  *
1388  * The control element is supposed to have the private_value field
1389  * set up via HDA_COMPOSE_AMP_VAL*() or related macros.
1390  */
1391 int snd_hda_mixer_amp_volume_info(struct snd_kcontrol *kcontrol,
1392 				  struct snd_ctl_elem_info *uinfo)
1393 {
1394 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
1395 	u16 nid = get_amp_nid(kcontrol);
1396 	u8 chs = get_amp_channels(kcontrol);
1397 	int dir = get_amp_direction(kcontrol);
1398 	unsigned int ofs = get_amp_offset(kcontrol);
1399 
1400 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1401 	uinfo->count = chs == 3 ? 2 : 1;
1402 	uinfo->value.integer.min = 0;
1403 	uinfo->value.integer.max = get_amp_max_value(codec, nid, dir, ofs);
1404 	if (!uinfo->value.integer.max) {
1405 		codec_warn(codec,
1406 			   "num_steps = 0 for NID=0x%x (ctl = %s)\n",
1407 			   nid, kcontrol->id.name);
1408 		return -EINVAL;
1409 	}
1410 	return 0;
1411 }
1412 EXPORT_SYMBOL_GPL(snd_hda_mixer_amp_volume_info);
1413 
1414 
1415 static inline unsigned int
1416 read_amp_value(struct hda_codec *codec, hda_nid_t nid,
1417 	       int ch, int dir, int idx, unsigned int ofs)
1418 {
1419 	unsigned int val;
1420 	val = snd_hda_codec_amp_read(codec, nid, ch, dir, idx);
1421 	val &= HDA_AMP_VOLMASK;
1422 	if (val >= ofs)
1423 		val -= ofs;
1424 	else
1425 		val = 0;
1426 	return val;
1427 }
1428 
1429 static inline int
1430 update_amp_value(struct hda_codec *codec, hda_nid_t nid,
1431 		 int ch, int dir, int idx, unsigned int ofs,
1432 		 unsigned int val)
1433 {
1434 	unsigned int maxval;
1435 
1436 	if (val > 0)
1437 		val += ofs;
1438 	/* ofs = 0: raw max value */
1439 	maxval = get_amp_max_value(codec, nid, dir, 0);
1440 	if (val > maxval)
1441 		val = maxval;
1442 	return snd_hda_codec_amp_update(codec, nid, ch, dir, idx,
1443 					HDA_AMP_VOLMASK, val);
1444 }
1445 
1446 /**
1447  * snd_hda_mixer_amp_volume_get - Get callback for a standard AMP mixer volume
1448  * @kcontrol: ctl element
1449  * @ucontrol: pointer to get/store the data
1450  *
1451  * The control element is supposed to have the private_value field
1452  * set up via HDA_COMPOSE_AMP_VAL*() or related macros.
1453  */
1454 int snd_hda_mixer_amp_volume_get(struct snd_kcontrol *kcontrol,
1455 				 struct snd_ctl_elem_value *ucontrol)
1456 {
1457 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
1458 	hda_nid_t nid = get_amp_nid(kcontrol);
1459 	int chs = get_amp_channels(kcontrol);
1460 	int dir = get_amp_direction(kcontrol);
1461 	int idx = get_amp_index(kcontrol);
1462 	unsigned int ofs = get_amp_offset(kcontrol);
1463 	long *valp = ucontrol->value.integer.value;
1464 
1465 	if (chs & 1)
1466 		*valp++ = read_amp_value(codec, nid, 0, dir, idx, ofs);
1467 	if (chs & 2)
1468 		*valp = read_amp_value(codec, nid, 1, dir, idx, ofs);
1469 	return 0;
1470 }
1471 EXPORT_SYMBOL_GPL(snd_hda_mixer_amp_volume_get);
1472 
1473 /**
1474  * snd_hda_mixer_amp_volume_put - Put callback for a standard AMP mixer volume
1475  * @kcontrol: ctl element
1476  * @ucontrol: pointer to get/store the data
1477  *
1478  * The control element is supposed to have the private_value field
1479  * set up via HDA_COMPOSE_AMP_VAL*() or related macros.
1480  */
1481 int snd_hda_mixer_amp_volume_put(struct snd_kcontrol *kcontrol,
1482 				 struct snd_ctl_elem_value *ucontrol)
1483 {
1484 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
1485 	hda_nid_t nid = get_amp_nid(kcontrol);
1486 	int chs = get_amp_channels(kcontrol);
1487 	int dir = get_amp_direction(kcontrol);
1488 	int idx = get_amp_index(kcontrol);
1489 	unsigned int ofs = get_amp_offset(kcontrol);
1490 	long *valp = ucontrol->value.integer.value;
1491 	int change = 0;
1492 
1493 	if (chs & 1) {
1494 		change = update_amp_value(codec, nid, 0, dir, idx, ofs, *valp);
1495 		valp++;
1496 	}
1497 	if (chs & 2)
1498 		change |= update_amp_value(codec, nid, 1, dir, idx, ofs, *valp);
1499 	return change;
1500 }
1501 EXPORT_SYMBOL_GPL(snd_hda_mixer_amp_volume_put);
1502 
1503 /* inquiry the amp caps and convert to TLV */
1504 static void get_ctl_amp_tlv(struct snd_kcontrol *kcontrol, unsigned int *tlv)
1505 {
1506 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
1507 	hda_nid_t nid = get_amp_nid(kcontrol);
1508 	int dir = get_amp_direction(kcontrol);
1509 	unsigned int ofs = get_amp_offset(kcontrol);
1510 	bool min_mute = get_amp_min_mute(kcontrol);
1511 	u32 caps, val1, val2;
1512 
1513 	caps = query_amp_caps(codec, nid, dir);
1514 	val2 = (caps & AC_AMPCAP_STEP_SIZE) >> AC_AMPCAP_STEP_SIZE_SHIFT;
1515 	val2 = (val2 + 1) * 25;
1516 	val1 = -((caps & AC_AMPCAP_OFFSET) >> AC_AMPCAP_OFFSET_SHIFT);
1517 	val1 += ofs;
1518 	val1 = ((int)val1) * ((int)val2);
1519 	if (min_mute || (caps & AC_AMPCAP_MIN_MUTE))
1520 		val2 |= TLV_DB_SCALE_MUTE;
1521 	tlv[SNDRV_CTL_TLVO_TYPE] = SNDRV_CTL_TLVT_DB_SCALE;
1522 	tlv[SNDRV_CTL_TLVO_LEN] = 2 * sizeof(unsigned int);
1523 	tlv[SNDRV_CTL_TLVO_DB_SCALE_MIN] = val1;
1524 	tlv[SNDRV_CTL_TLVO_DB_SCALE_MUTE_AND_STEP] = val2;
1525 }
1526 
1527 /**
1528  * snd_hda_mixer_amp_tlv - TLV callback for a standard AMP mixer volume
1529  * @kcontrol: ctl element
1530  * @op_flag: operation flag
1531  * @size: byte size of input TLV
1532  * @_tlv: TLV data
1533  *
1534  * The control element is supposed to have the private_value field
1535  * set up via HDA_COMPOSE_AMP_VAL*() or related macros.
1536  */
1537 int snd_hda_mixer_amp_tlv(struct snd_kcontrol *kcontrol, int op_flag,
1538 			  unsigned int size, unsigned int __user *_tlv)
1539 {
1540 	unsigned int tlv[4];
1541 
1542 	if (size < 4 * sizeof(unsigned int))
1543 		return -ENOMEM;
1544 	get_ctl_amp_tlv(kcontrol, tlv);
1545 	if (copy_to_user(_tlv, tlv, sizeof(tlv)))
1546 		return -EFAULT;
1547 	return 0;
1548 }
1549 EXPORT_SYMBOL_GPL(snd_hda_mixer_amp_tlv);
1550 
1551 /**
1552  * snd_hda_set_vmaster_tlv - Set TLV for a virtual master control
1553  * @codec: HD-audio codec
1554  * @nid: NID of a reference widget
1555  * @dir: #HDA_INPUT or #HDA_OUTPUT
1556  * @tlv: TLV data to be stored, at least 4 elements
1557  *
1558  * Set (static) TLV data for a virtual master volume using the AMP caps
1559  * obtained from the reference NID.
1560  * The volume range is recalculated as if the max volume is 0dB.
1561  */
1562 void snd_hda_set_vmaster_tlv(struct hda_codec *codec, hda_nid_t nid, int dir,
1563 			     unsigned int *tlv)
1564 {
1565 	u32 caps;
1566 	int nums, step;
1567 
1568 	caps = query_amp_caps(codec, nid, dir);
1569 	nums = (caps & AC_AMPCAP_NUM_STEPS) >> AC_AMPCAP_NUM_STEPS_SHIFT;
1570 	step = (caps & AC_AMPCAP_STEP_SIZE) >> AC_AMPCAP_STEP_SIZE_SHIFT;
1571 	step = (step + 1) * 25;
1572 	tlv[SNDRV_CTL_TLVO_TYPE] = SNDRV_CTL_TLVT_DB_SCALE;
1573 	tlv[SNDRV_CTL_TLVO_LEN] = 2 * sizeof(unsigned int);
1574 	tlv[SNDRV_CTL_TLVO_DB_SCALE_MIN] = -nums * step;
1575 	tlv[SNDRV_CTL_TLVO_DB_SCALE_MUTE_AND_STEP] = step;
1576 }
1577 EXPORT_SYMBOL_GPL(snd_hda_set_vmaster_tlv);
1578 
1579 /* find a mixer control element with the given name */
1580 static struct snd_kcontrol *
1581 find_mixer_ctl(struct hda_codec *codec, const char *name, int dev, int idx)
1582 {
1583 	struct snd_ctl_elem_id id;
1584 	memset(&id, 0, sizeof(id));
1585 	id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
1586 	id.device = dev;
1587 	id.index = idx;
1588 	if (snd_BUG_ON(strlen(name) >= sizeof(id.name)))
1589 		return NULL;
1590 	strcpy(id.name, name);
1591 	return snd_ctl_find_id(codec->card, &id);
1592 }
1593 
1594 /**
1595  * snd_hda_find_mixer_ctl - Find a mixer control element with the given name
1596  * @codec: HD-audio codec
1597  * @name: ctl id name string
1598  *
1599  * Get the control element with the given id string and IFACE_MIXER.
1600  */
1601 struct snd_kcontrol *snd_hda_find_mixer_ctl(struct hda_codec *codec,
1602 					    const char *name)
1603 {
1604 	return find_mixer_ctl(codec, name, 0, 0);
1605 }
1606 EXPORT_SYMBOL_GPL(snd_hda_find_mixer_ctl);
1607 
1608 static int find_empty_mixer_ctl_idx(struct hda_codec *codec, const char *name,
1609 				    int start_idx)
1610 {
1611 	int i, idx;
1612 	/* 16 ctlrs should be large enough */
1613 	for (i = 0, idx = start_idx; i < 16; i++, idx++) {
1614 		if (!find_mixer_ctl(codec, name, 0, idx))
1615 			return idx;
1616 	}
1617 	return -EBUSY;
1618 }
1619 
1620 /**
1621  * snd_hda_ctl_add - Add a control element and assign to the codec
1622  * @codec: HD-audio codec
1623  * @nid: corresponding NID (optional)
1624  * @kctl: the control element to assign
1625  *
1626  * Add the given control element to an array inside the codec instance.
1627  * All control elements belonging to a codec are supposed to be added
1628  * by this function so that a proper clean-up works at the free or
1629  * reconfiguration time.
1630  *
1631  * If non-zero @nid is passed, the NID is assigned to the control element.
1632  * The assignment is shown in the codec proc file.
1633  *
1634  * snd_hda_ctl_add() checks the control subdev id field whether
1635  * #HDA_SUBDEV_NID_FLAG bit is set.  If set (and @nid is zero), the lower
1636  * bits value is taken as the NID to assign. The #HDA_NID_ITEM_AMP bit
1637  * specifies if kctl->private_value is a HDA amplifier value.
1638  */
1639 int snd_hda_ctl_add(struct hda_codec *codec, hda_nid_t nid,
1640 		    struct snd_kcontrol *kctl)
1641 {
1642 	int err;
1643 	unsigned short flags = 0;
1644 	struct hda_nid_item *item;
1645 
1646 	if (kctl->id.subdevice & HDA_SUBDEV_AMP_FLAG) {
1647 		flags |= HDA_NID_ITEM_AMP;
1648 		if (nid == 0)
1649 			nid = get_amp_nid_(kctl->private_value);
1650 	}
1651 	if ((kctl->id.subdevice & HDA_SUBDEV_NID_FLAG) != 0 && nid == 0)
1652 		nid = kctl->id.subdevice & 0xffff;
1653 	if (kctl->id.subdevice & (HDA_SUBDEV_NID_FLAG|HDA_SUBDEV_AMP_FLAG))
1654 		kctl->id.subdevice = 0;
1655 	err = snd_ctl_add(codec->card, kctl);
1656 	if (err < 0)
1657 		return err;
1658 	item = snd_array_new(&codec->mixers);
1659 	if (!item)
1660 		return -ENOMEM;
1661 	item->kctl = kctl;
1662 	item->nid = nid;
1663 	item->flags = flags;
1664 	return 0;
1665 }
1666 EXPORT_SYMBOL_GPL(snd_hda_ctl_add);
1667 
1668 /**
1669  * snd_hda_add_nid - Assign a NID to a control element
1670  * @codec: HD-audio codec
1671  * @nid: corresponding NID (optional)
1672  * @kctl: the control element to assign
1673  * @index: index to kctl
1674  *
1675  * Add the given control element to an array inside the codec instance.
1676  * This function is used when #snd_hda_ctl_add cannot be used for 1:1
1677  * NID:KCTL mapping - for example "Capture Source" selector.
1678  */
1679 int snd_hda_add_nid(struct hda_codec *codec, struct snd_kcontrol *kctl,
1680 		    unsigned int index, hda_nid_t nid)
1681 {
1682 	struct hda_nid_item *item;
1683 
1684 	if (nid > 0) {
1685 		item = snd_array_new(&codec->nids);
1686 		if (!item)
1687 			return -ENOMEM;
1688 		item->kctl = kctl;
1689 		item->index = index;
1690 		item->nid = nid;
1691 		return 0;
1692 	}
1693 	codec_err(codec, "no NID for mapping control %s:%d:%d\n",
1694 		  kctl->id.name, kctl->id.index, index);
1695 	return -EINVAL;
1696 }
1697 EXPORT_SYMBOL_GPL(snd_hda_add_nid);
1698 
1699 /**
1700  * snd_hda_ctls_clear - Clear all controls assigned to the given codec
1701  * @codec: HD-audio codec
1702  */
1703 void snd_hda_ctls_clear(struct hda_codec *codec)
1704 {
1705 	int i;
1706 	struct hda_nid_item *items = codec->mixers.list;
1707 	for (i = 0; i < codec->mixers.used; i++)
1708 		snd_ctl_remove(codec->card, items[i].kctl);
1709 	snd_array_free(&codec->mixers);
1710 	snd_array_free(&codec->nids);
1711 }
1712 
1713 /**
1714  * snd_hda_lock_devices - pseudo device locking
1715  * @bus: the BUS
1716  *
1717  * toggle card->shutdown to allow/disallow the device access (as a hack)
1718  */
1719 int snd_hda_lock_devices(struct hda_bus *bus)
1720 {
1721 	struct snd_card *card = bus->card;
1722 	struct hda_codec *codec;
1723 
1724 	spin_lock(&card->files_lock);
1725 	if (card->shutdown)
1726 		goto err_unlock;
1727 	card->shutdown = 1;
1728 	if (!list_empty(&card->ctl_files))
1729 		goto err_clear;
1730 
1731 	list_for_each_codec(codec, bus) {
1732 		struct hda_pcm *cpcm;
1733 		list_for_each_entry(cpcm, &codec->pcm_list_head, list) {
1734 			if (!cpcm->pcm)
1735 				continue;
1736 			if (cpcm->pcm->streams[0].substream_opened ||
1737 			    cpcm->pcm->streams[1].substream_opened)
1738 				goto err_clear;
1739 		}
1740 	}
1741 	spin_unlock(&card->files_lock);
1742 	return 0;
1743 
1744  err_clear:
1745 	card->shutdown = 0;
1746  err_unlock:
1747 	spin_unlock(&card->files_lock);
1748 	return -EINVAL;
1749 }
1750 EXPORT_SYMBOL_GPL(snd_hda_lock_devices);
1751 
1752 /**
1753  * snd_hda_unlock_devices - pseudo device unlocking
1754  * @bus: the BUS
1755  */
1756 void snd_hda_unlock_devices(struct hda_bus *bus)
1757 {
1758 	struct snd_card *card = bus->card;
1759 
1760 	spin_lock(&card->files_lock);
1761 	card->shutdown = 0;
1762 	spin_unlock(&card->files_lock);
1763 }
1764 EXPORT_SYMBOL_GPL(snd_hda_unlock_devices);
1765 
1766 /**
1767  * snd_hda_codec_reset - Clear all objects assigned to the codec
1768  * @codec: HD-audio codec
1769  *
1770  * This frees the all PCM and control elements assigned to the codec, and
1771  * clears the caches and restores the pin default configurations.
1772  *
1773  * When a device is being used, it returns -EBSY.  If successfully freed,
1774  * returns zero.
1775  */
1776 int snd_hda_codec_reset(struct hda_codec *codec)
1777 {
1778 	struct hda_bus *bus = codec->bus;
1779 
1780 	if (snd_hda_lock_devices(bus) < 0)
1781 		return -EBUSY;
1782 
1783 	/* OK, let it free */
1784 	snd_hdac_device_unregister(&codec->core);
1785 
1786 	/* allow device access again */
1787 	snd_hda_unlock_devices(bus);
1788 	return 0;
1789 }
1790 
1791 typedef int (*map_slave_func_t)(struct hda_codec *, void *, struct snd_kcontrol *);
1792 
1793 /* apply the function to all matching slave ctls in the mixer list */
1794 static int map_slaves(struct hda_codec *codec, const char * const *slaves,
1795 		      const char *suffix, map_slave_func_t func, void *data)
1796 {
1797 	struct hda_nid_item *items;
1798 	const char * const *s;
1799 	int i, err;
1800 
1801 	items = codec->mixers.list;
1802 	for (i = 0; i < codec->mixers.used; i++) {
1803 		struct snd_kcontrol *sctl = items[i].kctl;
1804 		if (!sctl || sctl->id.iface != SNDRV_CTL_ELEM_IFACE_MIXER)
1805 			continue;
1806 		for (s = slaves; *s; s++) {
1807 			char tmpname[sizeof(sctl->id.name)];
1808 			const char *name = *s;
1809 			if (suffix) {
1810 				snprintf(tmpname, sizeof(tmpname), "%s %s",
1811 					 name, suffix);
1812 				name = tmpname;
1813 			}
1814 			if (!strcmp(sctl->id.name, name)) {
1815 				err = func(codec, data, sctl);
1816 				if (err)
1817 					return err;
1818 				break;
1819 			}
1820 		}
1821 	}
1822 	return 0;
1823 }
1824 
1825 static int check_slave_present(struct hda_codec *codec,
1826 			       void *data, struct snd_kcontrol *sctl)
1827 {
1828 	return 1;
1829 }
1830 
1831 /* call kctl->put with the given value(s) */
1832 static int put_kctl_with_value(struct snd_kcontrol *kctl, int val)
1833 {
1834 	struct snd_ctl_elem_value *ucontrol;
1835 	ucontrol = kzalloc(sizeof(*ucontrol), GFP_KERNEL);
1836 	if (!ucontrol)
1837 		return -ENOMEM;
1838 	ucontrol->value.integer.value[0] = val;
1839 	ucontrol->value.integer.value[1] = val;
1840 	kctl->put(kctl, ucontrol);
1841 	kfree(ucontrol);
1842 	return 0;
1843 }
1844 
1845 struct slave_init_arg {
1846 	struct hda_codec *codec;
1847 	int step;
1848 };
1849 
1850 /* initialize the slave volume with 0dB via snd_ctl_apply_vmaster_slaves() */
1851 static int init_slave_0dB(struct snd_kcontrol *slave,
1852 			  struct snd_kcontrol *kctl,
1853 			  void *_arg)
1854 {
1855 	struct slave_init_arg *arg = _arg;
1856 	int _tlv[4];
1857 	const int *tlv = NULL;
1858 	int step;
1859 	int val;
1860 
1861 	if (kctl->vd[0].access & SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK) {
1862 		if (kctl->tlv.c != snd_hda_mixer_amp_tlv) {
1863 			codec_err(arg->codec,
1864 				  "Unexpected TLV callback for slave %s:%d\n",
1865 				  kctl->id.name, kctl->id.index);
1866 			return 0; /* ignore */
1867 		}
1868 		get_ctl_amp_tlv(kctl, _tlv);
1869 		tlv = _tlv;
1870 	} else if (kctl->vd[0].access & SNDRV_CTL_ELEM_ACCESS_TLV_READ)
1871 		tlv = kctl->tlv.p;
1872 
1873 	if (!tlv || tlv[SNDRV_CTL_TLVO_TYPE] != SNDRV_CTL_TLVT_DB_SCALE)
1874 		return 0;
1875 
1876 	step = tlv[SNDRV_CTL_TLVO_DB_SCALE_MUTE_AND_STEP];
1877 	step &= ~TLV_DB_SCALE_MUTE;
1878 	if (!step)
1879 		return 0;
1880 	if (arg->step && arg->step != step) {
1881 		codec_err(arg->codec,
1882 			  "Mismatching dB step for vmaster slave (%d!=%d)\n",
1883 			  arg->step, step);
1884 		return 0;
1885 	}
1886 
1887 	arg->step = step;
1888 	val = -tlv[SNDRV_CTL_TLVO_DB_SCALE_MIN] / step;
1889 	if (val > 0) {
1890 		put_kctl_with_value(slave, val);
1891 		return val;
1892 	}
1893 
1894 	return 0;
1895 }
1896 
1897 /* unmute the slave via snd_ctl_apply_vmaster_slaves() */
1898 static int init_slave_unmute(struct snd_kcontrol *slave,
1899 			     struct snd_kcontrol *kctl,
1900 			     void *_arg)
1901 {
1902 	return put_kctl_with_value(slave, 1);
1903 }
1904 
1905 static int add_slave(struct hda_codec *codec,
1906 		     void *data, struct snd_kcontrol *slave)
1907 {
1908 	return snd_ctl_add_slave(data, slave);
1909 }
1910 
1911 /**
1912  * __snd_hda_add_vmaster - create a virtual master control and add slaves
1913  * @codec: HD-audio codec
1914  * @name: vmaster control name
1915  * @tlv: TLV data (optional)
1916  * @slaves: slave control names (optional)
1917  * @suffix: suffix string to each slave name (optional)
1918  * @init_slave_vol: initialize slaves to unmute/0dB
1919  * @ctl_ret: store the vmaster kcontrol in return
1920  *
1921  * Create a virtual master control with the given name.  The TLV data
1922  * must be either NULL or a valid data.
1923  *
1924  * @slaves is a NULL-terminated array of strings, each of which is a
1925  * slave control name.  All controls with these names are assigned to
1926  * the new virtual master control.
1927  *
1928  * This function returns zero if successful or a negative error code.
1929  */
1930 int __snd_hda_add_vmaster(struct hda_codec *codec, char *name,
1931 			unsigned int *tlv, const char * const *slaves,
1932 			  const char *suffix, bool init_slave_vol,
1933 			  struct snd_kcontrol **ctl_ret)
1934 {
1935 	struct snd_kcontrol *kctl;
1936 	int err;
1937 
1938 	if (ctl_ret)
1939 		*ctl_ret = NULL;
1940 
1941 	err = map_slaves(codec, slaves, suffix, check_slave_present, NULL);
1942 	if (err != 1) {
1943 		codec_dbg(codec, "No slave found for %s\n", name);
1944 		return 0;
1945 	}
1946 	kctl = snd_ctl_make_virtual_master(name, tlv);
1947 	if (!kctl)
1948 		return -ENOMEM;
1949 	err = snd_hda_ctl_add(codec, 0, kctl);
1950 	if (err < 0)
1951 		return err;
1952 
1953 	err = map_slaves(codec, slaves, suffix, add_slave, kctl);
1954 	if (err < 0)
1955 		return err;
1956 
1957 	/* init with master mute & zero volume */
1958 	put_kctl_with_value(kctl, 0);
1959 	if (init_slave_vol) {
1960 		struct slave_init_arg arg = {
1961 			.codec = codec,
1962 			.step = 0,
1963 		};
1964 		snd_ctl_apply_vmaster_slaves(kctl,
1965 					     tlv ? init_slave_0dB : init_slave_unmute,
1966 					     &arg);
1967 	}
1968 
1969 	if (ctl_ret)
1970 		*ctl_ret = kctl;
1971 	return 0;
1972 }
1973 EXPORT_SYMBOL_GPL(__snd_hda_add_vmaster);
1974 
1975 /*
1976  * mute-LED control using vmaster
1977  */
1978 static int vmaster_mute_mode_info(struct snd_kcontrol *kcontrol,
1979 				  struct snd_ctl_elem_info *uinfo)
1980 {
1981 	static const char * const texts[] = {
1982 		"On", "Off", "Follow Master"
1983 	};
1984 
1985 	return snd_ctl_enum_info(uinfo, 1, 3, texts);
1986 }
1987 
1988 static int vmaster_mute_mode_get(struct snd_kcontrol *kcontrol,
1989 				 struct snd_ctl_elem_value *ucontrol)
1990 {
1991 	struct hda_vmaster_mute_hook *hook = snd_kcontrol_chip(kcontrol);
1992 	ucontrol->value.enumerated.item[0] = hook->mute_mode;
1993 	return 0;
1994 }
1995 
1996 static int vmaster_mute_mode_put(struct snd_kcontrol *kcontrol,
1997 				 struct snd_ctl_elem_value *ucontrol)
1998 {
1999 	struct hda_vmaster_mute_hook *hook = snd_kcontrol_chip(kcontrol);
2000 	unsigned int old_mode = hook->mute_mode;
2001 
2002 	hook->mute_mode = ucontrol->value.enumerated.item[0];
2003 	if (hook->mute_mode > HDA_VMUTE_FOLLOW_MASTER)
2004 		hook->mute_mode = HDA_VMUTE_FOLLOW_MASTER;
2005 	if (old_mode == hook->mute_mode)
2006 		return 0;
2007 	snd_hda_sync_vmaster_hook(hook);
2008 	return 1;
2009 }
2010 
2011 static const struct snd_kcontrol_new vmaster_mute_mode = {
2012 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2013 	.name = "Mute-LED Mode",
2014 	.info = vmaster_mute_mode_info,
2015 	.get = vmaster_mute_mode_get,
2016 	.put = vmaster_mute_mode_put,
2017 };
2018 
2019 /* meta hook to call each driver's vmaster hook */
2020 static void vmaster_hook(void *private_data, int enabled)
2021 {
2022 	struct hda_vmaster_mute_hook *hook = private_data;
2023 
2024 	if (hook->mute_mode != HDA_VMUTE_FOLLOW_MASTER)
2025 		enabled = hook->mute_mode;
2026 	hook->hook(hook->codec, enabled);
2027 }
2028 
2029 /**
2030  * snd_hda_add_vmaster_hook - Add a vmaster hook for mute-LED
2031  * @codec: the HDA codec
2032  * @hook: the vmaster hook object
2033  * @expose_enum_ctl: flag to create an enum ctl
2034  *
2035  * Add a mute-LED hook with the given vmaster switch kctl.
2036  * When @expose_enum_ctl is set, "Mute-LED Mode" control is automatically
2037  * created and associated with the given hook.
2038  */
2039 int snd_hda_add_vmaster_hook(struct hda_codec *codec,
2040 			     struct hda_vmaster_mute_hook *hook,
2041 			     bool expose_enum_ctl)
2042 {
2043 	struct snd_kcontrol *kctl;
2044 
2045 	if (!hook->hook || !hook->sw_kctl)
2046 		return 0;
2047 	hook->codec = codec;
2048 	hook->mute_mode = HDA_VMUTE_FOLLOW_MASTER;
2049 	snd_ctl_add_vmaster_hook(hook->sw_kctl, vmaster_hook, hook);
2050 	if (!expose_enum_ctl)
2051 		return 0;
2052 	kctl = snd_ctl_new1(&vmaster_mute_mode, hook);
2053 	if (!kctl)
2054 		return -ENOMEM;
2055 	return snd_hda_ctl_add(codec, 0, kctl);
2056 }
2057 EXPORT_SYMBOL_GPL(snd_hda_add_vmaster_hook);
2058 
2059 /**
2060  * snd_hda_sync_vmaster_hook - Sync vmaster hook
2061  * @hook: the vmaster hook
2062  *
2063  * Call the hook with the current value for synchronization.
2064  * Should be called in init callback.
2065  */
2066 void snd_hda_sync_vmaster_hook(struct hda_vmaster_mute_hook *hook)
2067 {
2068 	if (!hook->hook || !hook->codec)
2069 		return;
2070 	/* don't call vmaster hook in the destructor since it might have
2071 	 * been already destroyed
2072 	 */
2073 	if (hook->codec->bus->shutdown)
2074 		return;
2075 	snd_ctl_sync_vmaster_hook(hook->sw_kctl);
2076 }
2077 EXPORT_SYMBOL_GPL(snd_hda_sync_vmaster_hook);
2078 
2079 
2080 /**
2081  * snd_hda_mixer_amp_switch_info - Info callback for a standard AMP mixer switch
2082  * @kcontrol: referred ctl element
2083  * @uinfo: pointer to get/store the data
2084  *
2085  * The control element is supposed to have the private_value field
2086  * set up via HDA_COMPOSE_AMP_VAL*() or related macros.
2087  */
2088 int snd_hda_mixer_amp_switch_info(struct snd_kcontrol *kcontrol,
2089 				  struct snd_ctl_elem_info *uinfo)
2090 {
2091 	int chs = get_amp_channels(kcontrol);
2092 
2093 	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2094 	uinfo->count = chs == 3 ? 2 : 1;
2095 	uinfo->value.integer.min = 0;
2096 	uinfo->value.integer.max = 1;
2097 	return 0;
2098 }
2099 EXPORT_SYMBOL_GPL(snd_hda_mixer_amp_switch_info);
2100 
2101 /**
2102  * snd_hda_mixer_amp_switch_get - Get callback for a standard AMP mixer switch
2103  * @kcontrol: ctl element
2104  * @ucontrol: pointer to get/store the data
2105  *
2106  * The control element is supposed to have the private_value field
2107  * set up via HDA_COMPOSE_AMP_VAL*() or related macros.
2108  */
2109 int snd_hda_mixer_amp_switch_get(struct snd_kcontrol *kcontrol,
2110 				 struct snd_ctl_elem_value *ucontrol)
2111 {
2112 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
2113 	hda_nid_t nid = get_amp_nid(kcontrol);
2114 	int chs = get_amp_channels(kcontrol);
2115 	int dir = get_amp_direction(kcontrol);
2116 	int idx = get_amp_index(kcontrol);
2117 	long *valp = ucontrol->value.integer.value;
2118 
2119 	if (chs & 1)
2120 		*valp++ = (snd_hda_codec_amp_read(codec, nid, 0, dir, idx) &
2121 			   HDA_AMP_MUTE) ? 0 : 1;
2122 	if (chs & 2)
2123 		*valp = (snd_hda_codec_amp_read(codec, nid, 1, dir, idx) &
2124 			 HDA_AMP_MUTE) ? 0 : 1;
2125 	return 0;
2126 }
2127 EXPORT_SYMBOL_GPL(snd_hda_mixer_amp_switch_get);
2128 
2129 /**
2130  * snd_hda_mixer_amp_switch_put - Put callback for a standard AMP mixer switch
2131  * @kcontrol: ctl element
2132  * @ucontrol: pointer to get/store the data
2133  *
2134  * The control element is supposed to have the private_value field
2135  * set up via HDA_COMPOSE_AMP_VAL*() or related macros.
2136  */
2137 int snd_hda_mixer_amp_switch_put(struct snd_kcontrol *kcontrol,
2138 				 struct snd_ctl_elem_value *ucontrol)
2139 {
2140 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
2141 	hda_nid_t nid = get_amp_nid(kcontrol);
2142 	int chs = get_amp_channels(kcontrol);
2143 	int dir = get_amp_direction(kcontrol);
2144 	int idx = get_amp_index(kcontrol);
2145 	long *valp = ucontrol->value.integer.value;
2146 	int change = 0;
2147 
2148 	if (chs & 1) {
2149 		change = snd_hda_codec_amp_update(codec, nid, 0, dir, idx,
2150 						  HDA_AMP_MUTE,
2151 						  *valp ? 0 : HDA_AMP_MUTE);
2152 		valp++;
2153 	}
2154 	if (chs & 2)
2155 		change |= snd_hda_codec_amp_update(codec, nid, 1, dir, idx,
2156 						   HDA_AMP_MUTE,
2157 						   *valp ? 0 : HDA_AMP_MUTE);
2158 	hda_call_check_power_status(codec, nid);
2159 	return change;
2160 }
2161 EXPORT_SYMBOL_GPL(snd_hda_mixer_amp_switch_put);
2162 
2163 /*
2164  * SPDIF out controls
2165  */
2166 
2167 static int snd_hda_spdif_mask_info(struct snd_kcontrol *kcontrol,
2168 				   struct snd_ctl_elem_info *uinfo)
2169 {
2170 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
2171 	uinfo->count = 1;
2172 	return 0;
2173 }
2174 
2175 static int snd_hda_spdif_cmask_get(struct snd_kcontrol *kcontrol,
2176 				   struct snd_ctl_elem_value *ucontrol)
2177 {
2178 	ucontrol->value.iec958.status[0] = IEC958_AES0_PROFESSIONAL |
2179 					   IEC958_AES0_NONAUDIO |
2180 					   IEC958_AES0_CON_EMPHASIS_5015 |
2181 					   IEC958_AES0_CON_NOT_COPYRIGHT;
2182 	ucontrol->value.iec958.status[1] = IEC958_AES1_CON_CATEGORY |
2183 					   IEC958_AES1_CON_ORIGINAL;
2184 	return 0;
2185 }
2186 
2187 static int snd_hda_spdif_pmask_get(struct snd_kcontrol *kcontrol,
2188 				   struct snd_ctl_elem_value *ucontrol)
2189 {
2190 	ucontrol->value.iec958.status[0] = IEC958_AES0_PROFESSIONAL |
2191 					   IEC958_AES0_NONAUDIO |
2192 					   IEC958_AES0_PRO_EMPHASIS_5015;
2193 	return 0;
2194 }
2195 
2196 static int snd_hda_spdif_default_get(struct snd_kcontrol *kcontrol,
2197 				     struct snd_ctl_elem_value *ucontrol)
2198 {
2199 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
2200 	int idx = kcontrol->private_value;
2201 	struct hda_spdif_out *spdif;
2202 
2203 	if (WARN_ON(codec->spdif_out.used <= idx))
2204 		return -EINVAL;
2205 	mutex_lock(&codec->spdif_mutex);
2206 	spdif = snd_array_elem(&codec->spdif_out, idx);
2207 	ucontrol->value.iec958.status[0] = spdif->status & 0xff;
2208 	ucontrol->value.iec958.status[1] = (spdif->status >> 8) & 0xff;
2209 	ucontrol->value.iec958.status[2] = (spdif->status >> 16) & 0xff;
2210 	ucontrol->value.iec958.status[3] = (spdif->status >> 24) & 0xff;
2211 	mutex_unlock(&codec->spdif_mutex);
2212 
2213 	return 0;
2214 }
2215 
2216 /* convert from SPDIF status bits to HDA SPDIF bits
2217  * bit 0 (DigEn) is always set zero (to be filled later)
2218  */
2219 static unsigned short convert_from_spdif_status(unsigned int sbits)
2220 {
2221 	unsigned short val = 0;
2222 
2223 	if (sbits & IEC958_AES0_PROFESSIONAL)
2224 		val |= AC_DIG1_PROFESSIONAL;
2225 	if (sbits & IEC958_AES0_NONAUDIO)
2226 		val |= AC_DIG1_NONAUDIO;
2227 	if (sbits & IEC958_AES0_PROFESSIONAL) {
2228 		if ((sbits & IEC958_AES0_PRO_EMPHASIS) ==
2229 		    IEC958_AES0_PRO_EMPHASIS_5015)
2230 			val |= AC_DIG1_EMPHASIS;
2231 	} else {
2232 		if ((sbits & IEC958_AES0_CON_EMPHASIS) ==
2233 		    IEC958_AES0_CON_EMPHASIS_5015)
2234 			val |= AC_DIG1_EMPHASIS;
2235 		if (!(sbits & IEC958_AES0_CON_NOT_COPYRIGHT))
2236 			val |= AC_DIG1_COPYRIGHT;
2237 		if (sbits & (IEC958_AES1_CON_ORIGINAL << 8))
2238 			val |= AC_DIG1_LEVEL;
2239 		val |= sbits & (IEC958_AES1_CON_CATEGORY << 8);
2240 	}
2241 	return val;
2242 }
2243 
2244 /* convert to SPDIF status bits from HDA SPDIF bits
2245  */
2246 static unsigned int convert_to_spdif_status(unsigned short val)
2247 {
2248 	unsigned int sbits = 0;
2249 
2250 	if (val & AC_DIG1_NONAUDIO)
2251 		sbits |= IEC958_AES0_NONAUDIO;
2252 	if (val & AC_DIG1_PROFESSIONAL)
2253 		sbits |= IEC958_AES0_PROFESSIONAL;
2254 	if (sbits & IEC958_AES0_PROFESSIONAL) {
2255 		if (val & AC_DIG1_EMPHASIS)
2256 			sbits |= IEC958_AES0_PRO_EMPHASIS_5015;
2257 	} else {
2258 		if (val & AC_DIG1_EMPHASIS)
2259 			sbits |= IEC958_AES0_CON_EMPHASIS_5015;
2260 		if (!(val & AC_DIG1_COPYRIGHT))
2261 			sbits |= IEC958_AES0_CON_NOT_COPYRIGHT;
2262 		if (val & AC_DIG1_LEVEL)
2263 			sbits |= (IEC958_AES1_CON_ORIGINAL << 8);
2264 		sbits |= val & (0x7f << 8);
2265 	}
2266 	return sbits;
2267 }
2268 
2269 /* set digital convert verbs both for the given NID and its slaves */
2270 static void set_dig_out(struct hda_codec *codec, hda_nid_t nid,
2271 			int mask, int val)
2272 {
2273 	const hda_nid_t *d;
2274 
2275 	snd_hdac_regmap_update(&codec->core, nid, AC_VERB_SET_DIGI_CONVERT_1,
2276 			       mask, val);
2277 	d = codec->slave_dig_outs;
2278 	if (!d)
2279 		return;
2280 	for (; *d; d++)
2281 		snd_hdac_regmap_update(&codec->core, *d,
2282 				       AC_VERB_SET_DIGI_CONVERT_1, mask, val);
2283 }
2284 
2285 static inline void set_dig_out_convert(struct hda_codec *codec, hda_nid_t nid,
2286 				       int dig1, int dig2)
2287 {
2288 	unsigned int mask = 0;
2289 	unsigned int val = 0;
2290 
2291 	if (dig1 != -1) {
2292 		mask |= 0xff;
2293 		val = dig1;
2294 	}
2295 	if (dig2 != -1) {
2296 		mask |= 0xff00;
2297 		val |= dig2 << 8;
2298 	}
2299 	set_dig_out(codec, nid, mask, val);
2300 }
2301 
2302 static int snd_hda_spdif_default_put(struct snd_kcontrol *kcontrol,
2303 				     struct snd_ctl_elem_value *ucontrol)
2304 {
2305 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
2306 	int idx = kcontrol->private_value;
2307 	struct hda_spdif_out *spdif;
2308 	hda_nid_t nid;
2309 	unsigned short val;
2310 	int change;
2311 
2312 	if (WARN_ON(codec->spdif_out.used <= idx))
2313 		return -EINVAL;
2314 	mutex_lock(&codec->spdif_mutex);
2315 	spdif = snd_array_elem(&codec->spdif_out, idx);
2316 	nid = spdif->nid;
2317 	spdif->status = ucontrol->value.iec958.status[0] |
2318 		((unsigned int)ucontrol->value.iec958.status[1] << 8) |
2319 		((unsigned int)ucontrol->value.iec958.status[2] << 16) |
2320 		((unsigned int)ucontrol->value.iec958.status[3] << 24);
2321 	val = convert_from_spdif_status(spdif->status);
2322 	val |= spdif->ctls & 1;
2323 	change = spdif->ctls != val;
2324 	spdif->ctls = val;
2325 	if (change && nid != (u16)-1)
2326 		set_dig_out_convert(codec, nid, val & 0xff, (val >> 8) & 0xff);
2327 	mutex_unlock(&codec->spdif_mutex);
2328 	return change;
2329 }
2330 
2331 #define snd_hda_spdif_out_switch_info	snd_ctl_boolean_mono_info
2332 
2333 static int snd_hda_spdif_out_switch_get(struct snd_kcontrol *kcontrol,
2334 					struct snd_ctl_elem_value *ucontrol)
2335 {
2336 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
2337 	int idx = kcontrol->private_value;
2338 	struct hda_spdif_out *spdif;
2339 
2340 	if (WARN_ON(codec->spdif_out.used <= idx))
2341 		return -EINVAL;
2342 	mutex_lock(&codec->spdif_mutex);
2343 	spdif = snd_array_elem(&codec->spdif_out, idx);
2344 	ucontrol->value.integer.value[0] = spdif->ctls & AC_DIG1_ENABLE;
2345 	mutex_unlock(&codec->spdif_mutex);
2346 	return 0;
2347 }
2348 
2349 static inline void set_spdif_ctls(struct hda_codec *codec, hda_nid_t nid,
2350 				  int dig1, int dig2)
2351 {
2352 	set_dig_out_convert(codec, nid, dig1, dig2);
2353 	/* unmute amp switch (if any) */
2354 	if ((get_wcaps(codec, nid) & AC_WCAP_OUT_AMP) &&
2355 	    (dig1 & AC_DIG1_ENABLE))
2356 		snd_hda_codec_amp_stereo(codec, nid, HDA_OUTPUT, 0,
2357 					    HDA_AMP_MUTE, 0);
2358 }
2359 
2360 static int snd_hda_spdif_out_switch_put(struct snd_kcontrol *kcontrol,
2361 					struct snd_ctl_elem_value *ucontrol)
2362 {
2363 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
2364 	int idx = kcontrol->private_value;
2365 	struct hda_spdif_out *spdif;
2366 	hda_nid_t nid;
2367 	unsigned short val;
2368 	int change;
2369 
2370 	if (WARN_ON(codec->spdif_out.used <= idx))
2371 		return -EINVAL;
2372 	mutex_lock(&codec->spdif_mutex);
2373 	spdif = snd_array_elem(&codec->spdif_out, idx);
2374 	nid = spdif->nid;
2375 	val = spdif->ctls & ~AC_DIG1_ENABLE;
2376 	if (ucontrol->value.integer.value[0])
2377 		val |= AC_DIG1_ENABLE;
2378 	change = spdif->ctls != val;
2379 	spdif->ctls = val;
2380 	if (change && nid != (u16)-1)
2381 		set_spdif_ctls(codec, nid, val & 0xff, -1);
2382 	mutex_unlock(&codec->spdif_mutex);
2383 	return change;
2384 }
2385 
2386 static struct snd_kcontrol_new dig_mixes[] = {
2387 	{
2388 		.access = SNDRV_CTL_ELEM_ACCESS_READ,
2389 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2390 		.name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, CON_MASK),
2391 		.info = snd_hda_spdif_mask_info,
2392 		.get = snd_hda_spdif_cmask_get,
2393 	},
2394 	{
2395 		.access = SNDRV_CTL_ELEM_ACCESS_READ,
2396 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2397 		.name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, PRO_MASK),
2398 		.info = snd_hda_spdif_mask_info,
2399 		.get = snd_hda_spdif_pmask_get,
2400 	},
2401 	{
2402 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2403 		.name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT),
2404 		.info = snd_hda_spdif_mask_info,
2405 		.get = snd_hda_spdif_default_get,
2406 		.put = snd_hda_spdif_default_put,
2407 	},
2408 	{
2409 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2410 		.name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, SWITCH),
2411 		.info = snd_hda_spdif_out_switch_info,
2412 		.get = snd_hda_spdif_out_switch_get,
2413 		.put = snd_hda_spdif_out_switch_put,
2414 	},
2415 	{ } /* end */
2416 };
2417 
2418 /**
2419  * snd_hda_create_dig_out_ctls - create Output SPDIF-related controls
2420  * @codec: the HDA codec
2421  * @associated_nid: NID that new ctls associated with
2422  * @cvt_nid: converter NID
2423  * @type: HDA_PCM_TYPE_*
2424  * Creates controls related with the digital output.
2425  * Called from each patch supporting the digital out.
2426  *
2427  * Returns 0 if successful, or a negative error code.
2428  */
2429 int snd_hda_create_dig_out_ctls(struct hda_codec *codec,
2430 				hda_nid_t associated_nid,
2431 				hda_nid_t cvt_nid,
2432 				int type)
2433 {
2434 	int err;
2435 	struct snd_kcontrol *kctl;
2436 	struct snd_kcontrol_new *dig_mix;
2437 	int idx = 0;
2438 	int val = 0;
2439 	const int spdif_index = 16;
2440 	struct hda_spdif_out *spdif;
2441 	struct hda_bus *bus = codec->bus;
2442 
2443 	if (bus->primary_dig_out_type == HDA_PCM_TYPE_HDMI &&
2444 	    type == HDA_PCM_TYPE_SPDIF) {
2445 		idx = spdif_index;
2446 	} else if (bus->primary_dig_out_type == HDA_PCM_TYPE_SPDIF &&
2447 		   type == HDA_PCM_TYPE_HDMI) {
2448 		/* suppose a single SPDIF device */
2449 		for (dig_mix = dig_mixes; dig_mix->name; dig_mix++) {
2450 			kctl = find_mixer_ctl(codec, dig_mix->name, 0, 0);
2451 			if (!kctl)
2452 				break;
2453 			kctl->id.index = spdif_index;
2454 		}
2455 		bus->primary_dig_out_type = HDA_PCM_TYPE_HDMI;
2456 	}
2457 	if (!bus->primary_dig_out_type)
2458 		bus->primary_dig_out_type = type;
2459 
2460 	idx = find_empty_mixer_ctl_idx(codec, "IEC958 Playback Switch", idx);
2461 	if (idx < 0) {
2462 		codec_err(codec, "too many IEC958 outputs\n");
2463 		return -EBUSY;
2464 	}
2465 	spdif = snd_array_new(&codec->spdif_out);
2466 	if (!spdif)
2467 		return -ENOMEM;
2468 	for (dig_mix = dig_mixes; dig_mix->name; dig_mix++) {
2469 		kctl = snd_ctl_new1(dig_mix, codec);
2470 		if (!kctl)
2471 			return -ENOMEM;
2472 		kctl->id.index = idx;
2473 		kctl->private_value = codec->spdif_out.used - 1;
2474 		err = snd_hda_ctl_add(codec, associated_nid, kctl);
2475 		if (err < 0)
2476 			return err;
2477 	}
2478 	spdif->nid = cvt_nid;
2479 	snd_hdac_regmap_read(&codec->core, cvt_nid,
2480 			     AC_VERB_GET_DIGI_CONVERT_1, &val);
2481 	spdif->ctls = val;
2482 	spdif->status = convert_to_spdif_status(spdif->ctls);
2483 	return 0;
2484 }
2485 EXPORT_SYMBOL_GPL(snd_hda_create_dig_out_ctls);
2486 
2487 /**
2488  * snd_hda_spdif_out_of_nid - get the hda_spdif_out entry from the given NID
2489  * @codec: the HDA codec
2490  * @nid: widget NID
2491  *
2492  * call within spdif_mutex lock
2493  */
2494 struct hda_spdif_out *snd_hda_spdif_out_of_nid(struct hda_codec *codec,
2495 					       hda_nid_t nid)
2496 {
2497 	struct hda_spdif_out *spdif;
2498 	int i;
2499 
2500 	snd_array_for_each(&codec->spdif_out, i, spdif) {
2501 		if (spdif->nid == nid)
2502 			return spdif;
2503 	}
2504 	return NULL;
2505 }
2506 EXPORT_SYMBOL_GPL(snd_hda_spdif_out_of_nid);
2507 
2508 /**
2509  * snd_hda_spdif_ctls_unassign - Unassign the given SPDIF ctl
2510  * @codec: the HDA codec
2511  * @idx: the SPDIF ctl index
2512  *
2513  * Unassign the widget from the given SPDIF control.
2514  */
2515 void snd_hda_spdif_ctls_unassign(struct hda_codec *codec, int idx)
2516 {
2517 	struct hda_spdif_out *spdif;
2518 
2519 	if (WARN_ON(codec->spdif_out.used <= idx))
2520 		return;
2521 	mutex_lock(&codec->spdif_mutex);
2522 	spdif = snd_array_elem(&codec->spdif_out, idx);
2523 	spdif->nid = (u16)-1;
2524 	mutex_unlock(&codec->spdif_mutex);
2525 }
2526 EXPORT_SYMBOL_GPL(snd_hda_spdif_ctls_unassign);
2527 
2528 /**
2529  * snd_hda_spdif_ctls_assign - Assign the SPDIF controls to the given NID
2530  * @codec: the HDA codec
2531  * @idx: the SPDIF ctl idx
2532  * @nid: widget NID
2533  *
2534  * Assign the widget to the SPDIF control with the given index.
2535  */
2536 void snd_hda_spdif_ctls_assign(struct hda_codec *codec, int idx, hda_nid_t nid)
2537 {
2538 	struct hda_spdif_out *spdif;
2539 	unsigned short val;
2540 
2541 	if (WARN_ON(codec->spdif_out.used <= idx))
2542 		return;
2543 	mutex_lock(&codec->spdif_mutex);
2544 	spdif = snd_array_elem(&codec->spdif_out, idx);
2545 	if (spdif->nid != nid) {
2546 		spdif->nid = nid;
2547 		val = spdif->ctls;
2548 		set_spdif_ctls(codec, nid, val & 0xff, (val >> 8) & 0xff);
2549 	}
2550 	mutex_unlock(&codec->spdif_mutex);
2551 }
2552 EXPORT_SYMBOL_GPL(snd_hda_spdif_ctls_assign);
2553 
2554 /*
2555  * SPDIF sharing with analog output
2556  */
2557 static int spdif_share_sw_get(struct snd_kcontrol *kcontrol,
2558 			      struct snd_ctl_elem_value *ucontrol)
2559 {
2560 	struct hda_multi_out *mout = snd_kcontrol_chip(kcontrol);
2561 	ucontrol->value.integer.value[0] = mout->share_spdif;
2562 	return 0;
2563 }
2564 
2565 static int spdif_share_sw_put(struct snd_kcontrol *kcontrol,
2566 			      struct snd_ctl_elem_value *ucontrol)
2567 {
2568 	struct hda_multi_out *mout = snd_kcontrol_chip(kcontrol);
2569 	mout->share_spdif = !!ucontrol->value.integer.value[0];
2570 	return 0;
2571 }
2572 
2573 static const struct snd_kcontrol_new spdif_share_sw = {
2574 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2575 	.name = "IEC958 Default PCM Playback Switch",
2576 	.info = snd_ctl_boolean_mono_info,
2577 	.get = spdif_share_sw_get,
2578 	.put = spdif_share_sw_put,
2579 };
2580 
2581 /**
2582  * snd_hda_create_spdif_share_sw - create Default PCM switch
2583  * @codec: the HDA codec
2584  * @mout: multi-out instance
2585  */
2586 int snd_hda_create_spdif_share_sw(struct hda_codec *codec,
2587 				  struct hda_multi_out *mout)
2588 {
2589 	struct snd_kcontrol *kctl;
2590 
2591 	if (!mout->dig_out_nid)
2592 		return 0;
2593 
2594 	kctl = snd_ctl_new1(&spdif_share_sw, mout);
2595 	if (!kctl)
2596 		return -ENOMEM;
2597 	/* ATTENTION: here mout is passed as private_data, instead of codec */
2598 	return snd_hda_ctl_add(codec, mout->dig_out_nid, kctl);
2599 }
2600 EXPORT_SYMBOL_GPL(snd_hda_create_spdif_share_sw);
2601 
2602 /*
2603  * SPDIF input
2604  */
2605 
2606 #define snd_hda_spdif_in_switch_info	snd_hda_spdif_out_switch_info
2607 
2608 static int snd_hda_spdif_in_switch_get(struct snd_kcontrol *kcontrol,
2609 				       struct snd_ctl_elem_value *ucontrol)
2610 {
2611 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
2612 
2613 	ucontrol->value.integer.value[0] = codec->spdif_in_enable;
2614 	return 0;
2615 }
2616 
2617 static int snd_hda_spdif_in_switch_put(struct snd_kcontrol *kcontrol,
2618 				       struct snd_ctl_elem_value *ucontrol)
2619 {
2620 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
2621 	hda_nid_t nid = kcontrol->private_value;
2622 	unsigned int val = !!ucontrol->value.integer.value[0];
2623 	int change;
2624 
2625 	mutex_lock(&codec->spdif_mutex);
2626 	change = codec->spdif_in_enable != val;
2627 	if (change) {
2628 		codec->spdif_in_enable = val;
2629 		snd_hdac_regmap_write(&codec->core, nid,
2630 				      AC_VERB_SET_DIGI_CONVERT_1, val);
2631 	}
2632 	mutex_unlock(&codec->spdif_mutex);
2633 	return change;
2634 }
2635 
2636 static int snd_hda_spdif_in_status_get(struct snd_kcontrol *kcontrol,
2637 				       struct snd_ctl_elem_value *ucontrol)
2638 {
2639 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
2640 	hda_nid_t nid = kcontrol->private_value;
2641 	unsigned int val;
2642 	unsigned int sbits;
2643 
2644 	snd_hdac_regmap_read(&codec->core, nid,
2645 			     AC_VERB_GET_DIGI_CONVERT_1, &val);
2646 	sbits = convert_to_spdif_status(val);
2647 	ucontrol->value.iec958.status[0] = sbits;
2648 	ucontrol->value.iec958.status[1] = sbits >> 8;
2649 	ucontrol->value.iec958.status[2] = sbits >> 16;
2650 	ucontrol->value.iec958.status[3] = sbits >> 24;
2651 	return 0;
2652 }
2653 
2654 static struct snd_kcontrol_new dig_in_ctls[] = {
2655 	{
2656 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2657 		.name = SNDRV_CTL_NAME_IEC958("", CAPTURE, SWITCH),
2658 		.info = snd_hda_spdif_in_switch_info,
2659 		.get = snd_hda_spdif_in_switch_get,
2660 		.put = snd_hda_spdif_in_switch_put,
2661 	},
2662 	{
2663 		.access = SNDRV_CTL_ELEM_ACCESS_READ,
2664 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2665 		.name = SNDRV_CTL_NAME_IEC958("", CAPTURE, DEFAULT),
2666 		.info = snd_hda_spdif_mask_info,
2667 		.get = snd_hda_spdif_in_status_get,
2668 	},
2669 	{ } /* end */
2670 };
2671 
2672 /**
2673  * snd_hda_create_spdif_in_ctls - create Input SPDIF-related controls
2674  * @codec: the HDA codec
2675  * @nid: audio in widget NID
2676  *
2677  * Creates controls related with the SPDIF input.
2678  * Called from each patch supporting the SPDIF in.
2679  *
2680  * Returns 0 if successful, or a negative error code.
2681  */
2682 int snd_hda_create_spdif_in_ctls(struct hda_codec *codec, hda_nid_t nid)
2683 {
2684 	int err;
2685 	struct snd_kcontrol *kctl;
2686 	struct snd_kcontrol_new *dig_mix;
2687 	int idx;
2688 
2689 	idx = find_empty_mixer_ctl_idx(codec, "IEC958 Capture Switch", 0);
2690 	if (idx < 0) {
2691 		codec_err(codec, "too many IEC958 inputs\n");
2692 		return -EBUSY;
2693 	}
2694 	for (dig_mix = dig_in_ctls; dig_mix->name; dig_mix++) {
2695 		kctl = snd_ctl_new1(dig_mix, codec);
2696 		if (!kctl)
2697 			return -ENOMEM;
2698 		kctl->private_value = nid;
2699 		err = snd_hda_ctl_add(codec, nid, kctl);
2700 		if (err < 0)
2701 			return err;
2702 	}
2703 	codec->spdif_in_enable =
2704 		snd_hda_codec_read(codec, nid, 0,
2705 				   AC_VERB_GET_DIGI_CONVERT_1, 0) &
2706 		AC_DIG1_ENABLE;
2707 	return 0;
2708 }
2709 EXPORT_SYMBOL_GPL(snd_hda_create_spdif_in_ctls);
2710 
2711 /**
2712  * snd_hda_codec_set_power_to_all - Set the power state to all widgets
2713  * @codec: the HDA codec
2714  * @fg: function group (not used now)
2715  * @power_state: the power state to set (AC_PWRST_*)
2716  *
2717  * Set the given power state to all widgets that have the power control.
2718  * If the codec has power_filter set, it evaluates the power state and
2719  * filter out if it's unchanged as D3.
2720  */
2721 void snd_hda_codec_set_power_to_all(struct hda_codec *codec, hda_nid_t fg,
2722 				    unsigned int power_state)
2723 {
2724 	hda_nid_t nid;
2725 
2726 	for_each_hda_codec_node(nid, codec) {
2727 		unsigned int wcaps = get_wcaps(codec, nid);
2728 		unsigned int state = power_state;
2729 		if (!(wcaps & AC_WCAP_POWER))
2730 			continue;
2731 		if (codec->power_filter) {
2732 			state = codec->power_filter(codec, nid, power_state);
2733 			if (state != power_state && power_state == AC_PWRST_D3)
2734 				continue;
2735 		}
2736 		snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_POWER_STATE,
2737 				    state);
2738 	}
2739 }
2740 EXPORT_SYMBOL_GPL(snd_hda_codec_set_power_to_all);
2741 
2742 /**
2743  * snd_hda_codec_eapd_power_filter - A power filter callback for EAPD
2744  * @codec: the HDA codec
2745  * @nid: widget NID
2746  * @power_state: power state to evalue
2747  *
2748  * Don't power down the widget if it controls eapd and EAPD_BTLENABLE is set.
2749  * This can be used a codec power_filter callback.
2750  */
2751 unsigned int snd_hda_codec_eapd_power_filter(struct hda_codec *codec,
2752 					     hda_nid_t nid,
2753 					     unsigned int power_state)
2754 {
2755 	if (nid == codec->core.afg || nid == codec->core.mfg)
2756 		return power_state;
2757 	if (power_state == AC_PWRST_D3 &&
2758 	    get_wcaps_type(get_wcaps(codec, nid)) == AC_WID_PIN &&
2759 	    (snd_hda_query_pin_caps(codec, nid) & AC_PINCAP_EAPD)) {
2760 		int eapd = snd_hda_codec_read(codec, nid, 0,
2761 					      AC_VERB_GET_EAPD_BTLENABLE, 0);
2762 		if (eapd & 0x02)
2763 			return AC_PWRST_D0;
2764 	}
2765 	return power_state;
2766 }
2767 EXPORT_SYMBOL_GPL(snd_hda_codec_eapd_power_filter);
2768 
2769 /*
2770  * set power state of the codec, and return the power state
2771  */
2772 static unsigned int hda_set_power_state(struct hda_codec *codec,
2773 					unsigned int power_state)
2774 {
2775 	hda_nid_t fg = codec->core.afg ? codec->core.afg : codec->core.mfg;
2776 	int count;
2777 	unsigned int state;
2778 	int flags = 0;
2779 
2780 	/* this delay seems necessary to avoid click noise at power-down */
2781 	if (power_state == AC_PWRST_D3) {
2782 		if (codec->depop_delay < 0)
2783 			msleep(codec_has_epss(codec) ? 10 : 100);
2784 		else if (codec->depop_delay > 0)
2785 			msleep(codec->depop_delay);
2786 		flags = HDA_RW_NO_RESPONSE_FALLBACK;
2787 	}
2788 
2789 	/* repeat power states setting at most 10 times*/
2790 	for (count = 0; count < 10; count++) {
2791 		if (codec->patch_ops.set_power_state)
2792 			codec->patch_ops.set_power_state(codec, fg,
2793 							 power_state);
2794 		else {
2795 			state = power_state;
2796 			if (codec->power_filter)
2797 				state = codec->power_filter(codec, fg, state);
2798 			if (state == power_state || power_state != AC_PWRST_D3)
2799 				snd_hda_codec_read(codec, fg, flags,
2800 						   AC_VERB_SET_POWER_STATE,
2801 						   state);
2802 			snd_hda_codec_set_power_to_all(codec, fg, power_state);
2803 		}
2804 		state = snd_hda_sync_power_state(codec, fg, power_state);
2805 		if (!(state & AC_PWRST_ERROR))
2806 			break;
2807 	}
2808 
2809 	return state;
2810 }
2811 
2812 /* sync power states of all widgets;
2813  * this is called at the end of codec parsing
2814  */
2815 static void sync_power_up_states(struct hda_codec *codec)
2816 {
2817 	hda_nid_t nid;
2818 
2819 	/* don't care if no filter is used */
2820 	if (!codec->power_filter)
2821 		return;
2822 
2823 	for_each_hda_codec_node(nid, codec) {
2824 		unsigned int wcaps = get_wcaps(codec, nid);
2825 		unsigned int target;
2826 		if (!(wcaps & AC_WCAP_POWER))
2827 			continue;
2828 		target = codec->power_filter(codec, nid, AC_PWRST_D0);
2829 		if (target == AC_PWRST_D0)
2830 			continue;
2831 		if (!snd_hda_check_power_state(codec, nid, target))
2832 			snd_hda_codec_write(codec, nid, 0,
2833 					    AC_VERB_SET_POWER_STATE, target);
2834 	}
2835 }
2836 
2837 #ifdef CONFIG_SND_HDA_RECONFIG
2838 /* execute additional init verbs */
2839 static void hda_exec_init_verbs(struct hda_codec *codec)
2840 {
2841 	if (codec->init_verbs.list)
2842 		snd_hda_sequence_write(codec, codec->init_verbs.list);
2843 }
2844 #else
2845 static inline void hda_exec_init_verbs(struct hda_codec *codec) {}
2846 #endif
2847 
2848 #ifdef CONFIG_PM
2849 /* update the power on/off account with the current jiffies */
2850 static void update_power_acct(struct hda_codec *codec, bool on)
2851 {
2852 	unsigned long delta = jiffies - codec->power_jiffies;
2853 
2854 	if (on)
2855 		codec->power_on_acct += delta;
2856 	else
2857 		codec->power_off_acct += delta;
2858 	codec->power_jiffies += delta;
2859 }
2860 
2861 void snd_hda_update_power_acct(struct hda_codec *codec)
2862 {
2863 	update_power_acct(codec, hda_codec_is_power_on(codec));
2864 }
2865 
2866 /*
2867  * call suspend and power-down; used both from PM and power-save
2868  * this function returns the power state in the end
2869  */
2870 static unsigned int hda_call_codec_suspend(struct hda_codec *codec)
2871 {
2872 	unsigned int state;
2873 
2874 	snd_hdac_enter_pm(&codec->core);
2875 	if (codec->patch_ops.suspend)
2876 		codec->patch_ops.suspend(codec);
2877 	hda_cleanup_all_streams(codec);
2878 	state = hda_set_power_state(codec, AC_PWRST_D3);
2879 	update_power_acct(codec, true);
2880 	snd_hdac_leave_pm(&codec->core);
2881 	return state;
2882 }
2883 
2884 /*
2885  * kick up codec; used both from PM and power-save
2886  */
2887 static void hda_call_codec_resume(struct hda_codec *codec)
2888 {
2889 	snd_hdac_enter_pm(&codec->core);
2890 	if (codec->core.regmap)
2891 		regcache_mark_dirty(codec->core.regmap);
2892 
2893 	codec->power_jiffies = jiffies;
2894 
2895 	hda_set_power_state(codec, AC_PWRST_D0);
2896 	restore_shutup_pins(codec);
2897 	hda_exec_init_verbs(codec);
2898 	snd_hda_jack_set_dirty_all(codec);
2899 	if (codec->patch_ops.resume)
2900 		codec->patch_ops.resume(codec);
2901 	else {
2902 		if (codec->patch_ops.init)
2903 			codec->patch_ops.init(codec);
2904 		if (codec->core.regmap)
2905 			regcache_sync(codec->core.regmap);
2906 	}
2907 
2908 	if (codec->jackpoll_interval)
2909 		hda_jackpoll_work(&codec->jackpoll_work.work);
2910 	else
2911 		snd_hda_jack_report_sync(codec);
2912 	snd_hdac_leave_pm(&codec->core);
2913 }
2914 
2915 static int hda_codec_runtime_suspend(struct device *dev)
2916 {
2917 	struct hda_codec *codec = dev_to_hda_codec(dev);
2918 	struct hda_pcm *pcm;
2919 	unsigned int state;
2920 
2921 	cancel_delayed_work_sync(&codec->jackpoll_work);
2922 	list_for_each_entry(pcm, &codec->pcm_list_head, list)
2923 		snd_pcm_suspend_all(pcm->pcm);
2924 	state = hda_call_codec_suspend(codec);
2925 	if (codec->link_down_at_suspend ||
2926 	    (codec_has_clkstop(codec) && codec_has_epss(codec) &&
2927 	     (state & AC_PWRST_CLK_STOP_OK)))
2928 		snd_hdac_codec_link_down(&codec->core);
2929 	snd_hdac_link_power(&codec->core, false);
2930 	return 0;
2931 }
2932 
2933 static int hda_codec_runtime_resume(struct device *dev)
2934 {
2935 	struct hda_codec *codec = dev_to_hda_codec(dev);
2936 
2937 	snd_hdac_link_power(&codec->core, true);
2938 	snd_hdac_codec_link_up(&codec->core);
2939 	hda_call_codec_resume(codec);
2940 	pm_runtime_mark_last_busy(dev);
2941 	return 0;
2942 }
2943 #endif /* CONFIG_PM */
2944 
2945 /* referred in hda_bind.c */
2946 const struct dev_pm_ops hda_codec_driver_pm = {
2947 	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
2948 				pm_runtime_force_resume)
2949 	SET_RUNTIME_PM_OPS(hda_codec_runtime_suspend, hda_codec_runtime_resume,
2950 			   NULL)
2951 };
2952 
2953 /*
2954  * add standard channel maps if not specified
2955  */
2956 static int add_std_chmaps(struct hda_codec *codec)
2957 {
2958 	struct hda_pcm *pcm;
2959 	int str, err;
2960 
2961 	list_for_each_entry(pcm, &codec->pcm_list_head, list) {
2962 		for (str = 0; str < 2; str++) {
2963 			struct hda_pcm_stream *hinfo = &pcm->stream[str];
2964 			struct snd_pcm_chmap *chmap;
2965 			const struct snd_pcm_chmap_elem *elem;
2966 
2967 			if (!pcm->pcm || pcm->own_chmap || !hinfo->substreams)
2968 				continue;
2969 			elem = hinfo->chmap ? hinfo->chmap : snd_pcm_std_chmaps;
2970 			err = snd_pcm_add_chmap_ctls(pcm->pcm, str, elem,
2971 						     hinfo->channels_max,
2972 						     0, &chmap);
2973 			if (err < 0)
2974 				return err;
2975 			chmap->channel_mask = SND_PCM_CHMAP_MASK_2468;
2976 		}
2977 	}
2978 	return 0;
2979 }
2980 
2981 /* default channel maps for 2.1 speakers;
2982  * since HD-audio supports only stereo, odd number channels are omitted
2983  */
2984 const struct snd_pcm_chmap_elem snd_pcm_2_1_chmaps[] = {
2985 	{ .channels = 2,
2986 	  .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
2987 	{ .channels = 4,
2988 	  .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR,
2989 		   SNDRV_CHMAP_LFE, SNDRV_CHMAP_LFE } },
2990 	{ }
2991 };
2992 EXPORT_SYMBOL_GPL(snd_pcm_2_1_chmaps);
2993 
2994 int snd_hda_codec_build_controls(struct hda_codec *codec)
2995 {
2996 	int err = 0;
2997 	hda_exec_init_verbs(codec);
2998 	/* continue to initialize... */
2999 	if (codec->patch_ops.init)
3000 		err = codec->patch_ops.init(codec);
3001 	if (!err && codec->patch_ops.build_controls)
3002 		err = codec->patch_ops.build_controls(codec);
3003 	if (err < 0)
3004 		return err;
3005 
3006 	/* we create chmaps here instead of build_pcms */
3007 	err = add_std_chmaps(codec);
3008 	if (err < 0)
3009 		return err;
3010 
3011 	if (codec->jackpoll_interval)
3012 		hda_jackpoll_work(&codec->jackpoll_work.work);
3013 	else
3014 		snd_hda_jack_report_sync(codec); /* call at the last init point */
3015 	sync_power_up_states(codec);
3016 	return 0;
3017 }
3018 EXPORT_SYMBOL_GPL(snd_hda_codec_build_controls);
3019 
3020 /*
3021  * PCM stuff
3022  */
3023 static int hda_pcm_default_open_close(struct hda_pcm_stream *hinfo,
3024 				      struct hda_codec *codec,
3025 				      struct snd_pcm_substream *substream)
3026 {
3027 	return 0;
3028 }
3029 
3030 static int hda_pcm_default_prepare(struct hda_pcm_stream *hinfo,
3031 				   struct hda_codec *codec,
3032 				   unsigned int stream_tag,
3033 				   unsigned int format,
3034 				   struct snd_pcm_substream *substream)
3035 {
3036 	snd_hda_codec_setup_stream(codec, hinfo->nid, stream_tag, 0, format);
3037 	return 0;
3038 }
3039 
3040 static int hda_pcm_default_cleanup(struct hda_pcm_stream *hinfo,
3041 				   struct hda_codec *codec,
3042 				   struct snd_pcm_substream *substream)
3043 {
3044 	snd_hda_codec_cleanup_stream(codec, hinfo->nid);
3045 	return 0;
3046 }
3047 
3048 static int set_pcm_default_values(struct hda_codec *codec,
3049 				  struct hda_pcm_stream *info)
3050 {
3051 	int err;
3052 
3053 	/* query support PCM information from the given NID */
3054 	if (info->nid && (!info->rates || !info->formats)) {
3055 		err = snd_hda_query_supported_pcm(codec, info->nid,
3056 				info->rates ? NULL : &info->rates,
3057 				info->formats ? NULL : &info->formats,
3058 				info->maxbps ? NULL : &info->maxbps);
3059 		if (err < 0)
3060 			return err;
3061 	}
3062 	if (info->ops.open == NULL)
3063 		info->ops.open = hda_pcm_default_open_close;
3064 	if (info->ops.close == NULL)
3065 		info->ops.close = hda_pcm_default_open_close;
3066 	if (info->ops.prepare == NULL) {
3067 		if (snd_BUG_ON(!info->nid))
3068 			return -EINVAL;
3069 		info->ops.prepare = hda_pcm_default_prepare;
3070 	}
3071 	if (info->ops.cleanup == NULL) {
3072 		if (snd_BUG_ON(!info->nid))
3073 			return -EINVAL;
3074 		info->ops.cleanup = hda_pcm_default_cleanup;
3075 	}
3076 	return 0;
3077 }
3078 
3079 /*
3080  * codec prepare/cleanup entries
3081  */
3082 /**
3083  * snd_hda_codec_prepare - Prepare a stream
3084  * @codec: the HDA codec
3085  * @hinfo: PCM information
3086  * @stream: stream tag to assign
3087  * @format: format id to assign
3088  * @substream: PCM substream to assign
3089  *
3090  * Calls the prepare callback set by the codec with the given arguments.
3091  * Clean up the inactive streams when successful.
3092  */
3093 int snd_hda_codec_prepare(struct hda_codec *codec,
3094 			  struct hda_pcm_stream *hinfo,
3095 			  unsigned int stream,
3096 			  unsigned int format,
3097 			  struct snd_pcm_substream *substream)
3098 {
3099 	int ret;
3100 	mutex_lock(&codec->bus->prepare_mutex);
3101 	if (hinfo->ops.prepare)
3102 		ret = hinfo->ops.prepare(hinfo, codec, stream, format,
3103 					 substream);
3104 	else
3105 		ret = -ENODEV;
3106 	if (ret >= 0)
3107 		purify_inactive_streams(codec);
3108 	mutex_unlock(&codec->bus->prepare_mutex);
3109 	return ret;
3110 }
3111 EXPORT_SYMBOL_GPL(snd_hda_codec_prepare);
3112 
3113 /**
3114  * snd_hda_codec_cleanup - Prepare a stream
3115  * @codec: the HDA codec
3116  * @hinfo: PCM information
3117  * @substream: PCM substream
3118  *
3119  * Calls the cleanup callback set by the codec with the given arguments.
3120  */
3121 void snd_hda_codec_cleanup(struct hda_codec *codec,
3122 			   struct hda_pcm_stream *hinfo,
3123 			   struct snd_pcm_substream *substream)
3124 {
3125 	mutex_lock(&codec->bus->prepare_mutex);
3126 	if (hinfo->ops.cleanup)
3127 		hinfo->ops.cleanup(hinfo, codec, substream);
3128 	mutex_unlock(&codec->bus->prepare_mutex);
3129 }
3130 EXPORT_SYMBOL_GPL(snd_hda_codec_cleanup);
3131 
3132 /* global */
3133 const char *snd_hda_pcm_type_name[HDA_PCM_NTYPES] = {
3134 	"Audio", "SPDIF", "HDMI", "Modem"
3135 };
3136 
3137 /*
3138  * get the empty PCM device number to assign
3139  */
3140 static int get_empty_pcm_device(struct hda_bus *bus, unsigned int type)
3141 {
3142 	/* audio device indices; not linear to keep compatibility */
3143 	/* assigned to static slots up to dev#10; if more needed, assign
3144 	 * the later slot dynamically (when CONFIG_SND_DYNAMIC_MINORS=y)
3145 	 */
3146 	static int audio_idx[HDA_PCM_NTYPES][5] = {
3147 		[HDA_PCM_TYPE_AUDIO] = { 0, 2, 4, 5, -1 },
3148 		[HDA_PCM_TYPE_SPDIF] = { 1, -1 },
3149 		[HDA_PCM_TYPE_HDMI]  = { 3, 7, 8, 9, -1 },
3150 		[HDA_PCM_TYPE_MODEM] = { 6, -1 },
3151 	};
3152 	int i;
3153 
3154 	if (type >= HDA_PCM_NTYPES) {
3155 		dev_err(bus->card->dev, "Invalid PCM type %d\n", type);
3156 		return -EINVAL;
3157 	}
3158 
3159 	for (i = 0; audio_idx[type][i] >= 0; i++) {
3160 #ifndef CONFIG_SND_DYNAMIC_MINORS
3161 		if (audio_idx[type][i] >= 8)
3162 			break;
3163 #endif
3164 		if (!test_and_set_bit(audio_idx[type][i], bus->pcm_dev_bits))
3165 			return audio_idx[type][i];
3166 	}
3167 
3168 #ifdef CONFIG_SND_DYNAMIC_MINORS
3169 	/* non-fixed slots starting from 10 */
3170 	for (i = 10; i < 32; i++) {
3171 		if (!test_and_set_bit(i, bus->pcm_dev_bits))
3172 			return i;
3173 	}
3174 #endif
3175 
3176 	dev_warn(bus->card->dev, "Too many %s devices\n",
3177 		snd_hda_pcm_type_name[type]);
3178 #ifndef CONFIG_SND_DYNAMIC_MINORS
3179 	dev_warn(bus->card->dev,
3180 		 "Consider building the kernel with CONFIG_SND_DYNAMIC_MINORS=y\n");
3181 #endif
3182 	return -EAGAIN;
3183 }
3184 
3185 /* call build_pcms ops of the given codec and set up the default parameters */
3186 int snd_hda_codec_parse_pcms(struct hda_codec *codec)
3187 {
3188 	struct hda_pcm *cpcm;
3189 	int err;
3190 
3191 	if (!list_empty(&codec->pcm_list_head))
3192 		return 0; /* already parsed */
3193 
3194 	if (!codec->patch_ops.build_pcms)
3195 		return 0;
3196 
3197 	err = codec->patch_ops.build_pcms(codec);
3198 	if (err < 0) {
3199 		codec_err(codec, "cannot build PCMs for #%d (error %d)\n",
3200 			  codec->core.addr, err);
3201 		return err;
3202 	}
3203 
3204 	list_for_each_entry(cpcm, &codec->pcm_list_head, list) {
3205 		int stream;
3206 
3207 		for (stream = 0; stream < 2; stream++) {
3208 			struct hda_pcm_stream *info = &cpcm->stream[stream];
3209 
3210 			if (!info->substreams)
3211 				continue;
3212 			err = set_pcm_default_values(codec, info);
3213 			if (err < 0) {
3214 				codec_warn(codec,
3215 					   "fail to setup default for PCM %s\n",
3216 					   cpcm->name);
3217 				return err;
3218 			}
3219 		}
3220 	}
3221 
3222 	return 0;
3223 }
3224 EXPORT_SYMBOL_GPL(snd_hda_codec_parse_pcms);
3225 
3226 /* assign all PCMs of the given codec */
3227 int snd_hda_codec_build_pcms(struct hda_codec *codec)
3228 {
3229 	struct hda_bus *bus = codec->bus;
3230 	struct hda_pcm *cpcm;
3231 	int dev, err;
3232 
3233 	err = snd_hda_codec_parse_pcms(codec);
3234 	if (err < 0)
3235 		return err;
3236 
3237 	/* attach a new PCM streams */
3238 	list_for_each_entry(cpcm, &codec->pcm_list_head, list) {
3239 		if (cpcm->pcm)
3240 			continue; /* already attached */
3241 		if (!cpcm->stream[0].substreams && !cpcm->stream[1].substreams)
3242 			continue; /* no substreams assigned */
3243 
3244 		dev = get_empty_pcm_device(bus, cpcm->pcm_type);
3245 		if (dev < 0) {
3246 			cpcm->device = SNDRV_PCM_INVALID_DEVICE;
3247 			continue; /* no fatal error */
3248 		}
3249 		cpcm->device = dev;
3250 		err =  snd_hda_attach_pcm_stream(bus, codec, cpcm);
3251 		if (err < 0) {
3252 			codec_err(codec,
3253 				  "cannot attach PCM stream %d for codec #%d\n",
3254 				  dev, codec->core.addr);
3255 			continue; /* no fatal error */
3256 		}
3257 	}
3258 
3259 	return 0;
3260 }
3261 
3262 /**
3263  * snd_hda_add_new_ctls - create controls from the array
3264  * @codec: the HDA codec
3265  * @knew: the array of struct snd_kcontrol_new
3266  *
3267  * This helper function creates and add new controls in the given array.
3268  * The array must be terminated with an empty entry as terminator.
3269  *
3270  * Returns 0 if successful, or a negative error code.
3271  */
3272 int snd_hda_add_new_ctls(struct hda_codec *codec,
3273 			 const struct snd_kcontrol_new *knew)
3274 {
3275 	int err;
3276 
3277 	for (; knew->name; knew++) {
3278 		struct snd_kcontrol *kctl;
3279 		int addr = 0, idx = 0;
3280 		if (knew->iface == (__force snd_ctl_elem_iface_t)-1)
3281 			continue; /* skip this codec private value */
3282 		for (;;) {
3283 			kctl = snd_ctl_new1(knew, codec);
3284 			if (!kctl)
3285 				return -ENOMEM;
3286 			if (addr > 0)
3287 				kctl->id.device = addr;
3288 			if (idx > 0)
3289 				kctl->id.index = idx;
3290 			err = snd_hda_ctl_add(codec, 0, kctl);
3291 			if (!err)
3292 				break;
3293 			/* try first with another device index corresponding to
3294 			 * the codec addr; if it still fails (or it's the
3295 			 * primary codec), then try another control index
3296 			 */
3297 			if (!addr && codec->core.addr)
3298 				addr = codec->core.addr;
3299 			else if (!idx && !knew->index) {
3300 				idx = find_empty_mixer_ctl_idx(codec,
3301 							       knew->name, 0);
3302 				if (idx <= 0)
3303 					return err;
3304 			} else
3305 				return err;
3306 		}
3307 	}
3308 	return 0;
3309 }
3310 EXPORT_SYMBOL_GPL(snd_hda_add_new_ctls);
3311 
3312 #ifdef CONFIG_PM
3313 static void codec_set_power_save(struct hda_codec *codec, int delay)
3314 {
3315 	struct device *dev = hda_codec_dev(codec);
3316 
3317 	if (delay == 0 && codec->auto_runtime_pm)
3318 		delay = 3000;
3319 
3320 	if (delay > 0) {
3321 		pm_runtime_set_autosuspend_delay(dev, delay);
3322 		pm_runtime_use_autosuspend(dev);
3323 		pm_runtime_allow(dev);
3324 		if (!pm_runtime_suspended(dev))
3325 			pm_runtime_mark_last_busy(dev);
3326 	} else {
3327 		pm_runtime_dont_use_autosuspend(dev);
3328 		pm_runtime_forbid(dev);
3329 	}
3330 }
3331 
3332 /**
3333  * snd_hda_set_power_save - reprogram autosuspend for the given delay
3334  * @bus: HD-audio bus
3335  * @delay: autosuspend delay in msec, 0 = off
3336  *
3337  * Synchronize the runtime PM autosuspend state from the power_save option.
3338  */
3339 void snd_hda_set_power_save(struct hda_bus *bus, int delay)
3340 {
3341 	struct hda_codec *c;
3342 
3343 	list_for_each_codec(c, bus)
3344 		codec_set_power_save(c, delay);
3345 }
3346 EXPORT_SYMBOL_GPL(snd_hda_set_power_save);
3347 
3348 /**
3349  * snd_hda_check_amp_list_power - Check the amp list and update the power
3350  * @codec: HD-audio codec
3351  * @check: the object containing an AMP list and the status
3352  * @nid: NID to check / update
3353  *
3354  * Check whether the given NID is in the amp list.  If it's in the list,
3355  * check the current AMP status, and update the the power-status according
3356  * to the mute status.
3357  *
3358  * This function is supposed to be set or called from the check_power_status
3359  * patch ops.
3360  */
3361 int snd_hda_check_amp_list_power(struct hda_codec *codec,
3362 				 struct hda_loopback_check *check,
3363 				 hda_nid_t nid)
3364 {
3365 	const struct hda_amp_list *p;
3366 	int ch, v;
3367 
3368 	if (!check->amplist)
3369 		return 0;
3370 	for (p = check->amplist; p->nid; p++) {
3371 		if (p->nid == nid)
3372 			break;
3373 	}
3374 	if (!p->nid)
3375 		return 0; /* nothing changed */
3376 
3377 	for (p = check->amplist; p->nid; p++) {
3378 		for (ch = 0; ch < 2; ch++) {
3379 			v = snd_hda_codec_amp_read(codec, p->nid, ch, p->dir,
3380 						   p->idx);
3381 			if (!(v & HDA_AMP_MUTE) && v > 0) {
3382 				if (!check->power_on) {
3383 					check->power_on = 1;
3384 					snd_hda_power_up_pm(codec);
3385 				}
3386 				return 1;
3387 			}
3388 		}
3389 	}
3390 	if (check->power_on) {
3391 		check->power_on = 0;
3392 		snd_hda_power_down_pm(codec);
3393 	}
3394 	return 0;
3395 }
3396 EXPORT_SYMBOL_GPL(snd_hda_check_amp_list_power);
3397 #endif
3398 
3399 /*
3400  * input MUX helper
3401  */
3402 
3403 /**
3404  * snd_hda_input_mux_info_info - Info callback helper for the input-mux enum
3405  * @imux: imux helper object
3406  * @uinfo: pointer to get/store the data
3407  */
3408 int snd_hda_input_mux_info(const struct hda_input_mux *imux,
3409 			   struct snd_ctl_elem_info *uinfo)
3410 {
3411 	unsigned int index;
3412 
3413 	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
3414 	uinfo->count = 1;
3415 	uinfo->value.enumerated.items = imux->num_items;
3416 	if (!imux->num_items)
3417 		return 0;
3418 	index = uinfo->value.enumerated.item;
3419 	if (index >= imux->num_items)
3420 		index = imux->num_items - 1;
3421 	strcpy(uinfo->value.enumerated.name, imux->items[index].label);
3422 	return 0;
3423 }
3424 EXPORT_SYMBOL_GPL(snd_hda_input_mux_info);
3425 
3426 /**
3427  * snd_hda_input_mux_info_put - Put callback helper for the input-mux enum
3428  * @codec: the HDA codec
3429  * @imux: imux helper object
3430  * @ucontrol: pointer to get/store the data
3431  * @nid: input mux NID
3432  * @cur_val: pointer to get/store the current imux value
3433  */
3434 int snd_hda_input_mux_put(struct hda_codec *codec,
3435 			  const struct hda_input_mux *imux,
3436 			  struct snd_ctl_elem_value *ucontrol,
3437 			  hda_nid_t nid,
3438 			  unsigned int *cur_val)
3439 {
3440 	unsigned int idx;
3441 
3442 	if (!imux->num_items)
3443 		return 0;
3444 	idx = ucontrol->value.enumerated.item[0];
3445 	if (idx >= imux->num_items)
3446 		idx = imux->num_items - 1;
3447 	if (*cur_val == idx)
3448 		return 0;
3449 	snd_hda_codec_write_cache(codec, nid, 0, AC_VERB_SET_CONNECT_SEL,
3450 				  imux->items[idx].index);
3451 	*cur_val = idx;
3452 	return 1;
3453 }
3454 EXPORT_SYMBOL_GPL(snd_hda_input_mux_put);
3455 
3456 
3457 /**
3458  * snd_hda_enum_helper_info - Helper for simple enum ctls
3459  * @kcontrol: ctl element
3460  * @uinfo: pointer to get/store the data
3461  * @num_items: number of enum items
3462  * @texts: enum item string array
3463  *
3464  * process kcontrol info callback of a simple string enum array
3465  * when @num_items is 0 or @texts is NULL, assume a boolean enum array
3466  */
3467 int snd_hda_enum_helper_info(struct snd_kcontrol *kcontrol,
3468 			     struct snd_ctl_elem_info *uinfo,
3469 			     int num_items, const char * const *texts)
3470 {
3471 	static const char * const texts_default[] = {
3472 		"Disabled", "Enabled"
3473 	};
3474 
3475 	if (!texts || !num_items) {
3476 		num_items = 2;
3477 		texts = texts_default;
3478 	}
3479 
3480 	return snd_ctl_enum_info(uinfo, 1, num_items, texts);
3481 }
3482 EXPORT_SYMBOL_GPL(snd_hda_enum_helper_info);
3483 
3484 /*
3485  * Multi-channel / digital-out PCM helper functions
3486  */
3487 
3488 /* setup SPDIF output stream */
3489 static void setup_dig_out_stream(struct hda_codec *codec, hda_nid_t nid,
3490 				 unsigned int stream_tag, unsigned int format)
3491 {
3492 	struct hda_spdif_out *spdif;
3493 	unsigned int curr_fmt;
3494 	bool reset;
3495 
3496 	spdif = snd_hda_spdif_out_of_nid(codec, nid);
3497 	/* Add sanity check to pass klockwork check.
3498 	 * This should never happen.
3499 	 */
3500 	if (WARN_ON(spdif == NULL))
3501 		return;
3502 
3503 	curr_fmt = snd_hda_codec_read(codec, nid, 0,
3504 				      AC_VERB_GET_STREAM_FORMAT, 0);
3505 	reset = codec->spdif_status_reset &&
3506 		(spdif->ctls & AC_DIG1_ENABLE) &&
3507 		curr_fmt != format;
3508 
3509 	/* turn off SPDIF if needed; otherwise the IEC958 bits won't be
3510 	   updated */
3511 	if (reset)
3512 		set_dig_out_convert(codec, nid,
3513 				    spdif->ctls & ~AC_DIG1_ENABLE & 0xff,
3514 				    -1);
3515 	snd_hda_codec_setup_stream(codec, nid, stream_tag, 0, format);
3516 	if (codec->slave_dig_outs) {
3517 		const hda_nid_t *d;
3518 		for (d = codec->slave_dig_outs; *d; d++)
3519 			snd_hda_codec_setup_stream(codec, *d, stream_tag, 0,
3520 						   format);
3521 	}
3522 	/* turn on again (if needed) */
3523 	if (reset)
3524 		set_dig_out_convert(codec, nid,
3525 				    spdif->ctls & 0xff, -1);
3526 }
3527 
3528 static void cleanup_dig_out_stream(struct hda_codec *codec, hda_nid_t nid)
3529 {
3530 	snd_hda_codec_cleanup_stream(codec, nid);
3531 	if (codec->slave_dig_outs) {
3532 		const hda_nid_t *d;
3533 		for (d = codec->slave_dig_outs; *d; d++)
3534 			snd_hda_codec_cleanup_stream(codec, *d);
3535 	}
3536 }
3537 
3538 /**
3539  * snd_hda_multi_out_dig_open - open the digital out in the exclusive mode
3540  * @codec: the HDA codec
3541  * @mout: hda_multi_out object
3542  */
3543 int snd_hda_multi_out_dig_open(struct hda_codec *codec,
3544 			       struct hda_multi_out *mout)
3545 {
3546 	mutex_lock(&codec->spdif_mutex);
3547 	if (mout->dig_out_used == HDA_DIG_ANALOG_DUP)
3548 		/* already opened as analog dup; reset it once */
3549 		cleanup_dig_out_stream(codec, mout->dig_out_nid);
3550 	mout->dig_out_used = HDA_DIG_EXCLUSIVE;
3551 	mutex_unlock(&codec->spdif_mutex);
3552 	return 0;
3553 }
3554 EXPORT_SYMBOL_GPL(snd_hda_multi_out_dig_open);
3555 
3556 /**
3557  * snd_hda_multi_out_dig_prepare - prepare the digital out stream
3558  * @codec: the HDA codec
3559  * @mout: hda_multi_out object
3560  * @stream_tag: stream tag to assign
3561  * @format: format id to assign
3562  * @substream: PCM substream to assign
3563  */
3564 int snd_hda_multi_out_dig_prepare(struct hda_codec *codec,
3565 				  struct hda_multi_out *mout,
3566 				  unsigned int stream_tag,
3567 				  unsigned int format,
3568 				  struct snd_pcm_substream *substream)
3569 {
3570 	mutex_lock(&codec->spdif_mutex);
3571 	setup_dig_out_stream(codec, mout->dig_out_nid, stream_tag, format);
3572 	mutex_unlock(&codec->spdif_mutex);
3573 	return 0;
3574 }
3575 EXPORT_SYMBOL_GPL(snd_hda_multi_out_dig_prepare);
3576 
3577 /**
3578  * snd_hda_multi_out_dig_cleanup - clean-up the digital out stream
3579  * @codec: the HDA codec
3580  * @mout: hda_multi_out object
3581  */
3582 int snd_hda_multi_out_dig_cleanup(struct hda_codec *codec,
3583 				  struct hda_multi_out *mout)
3584 {
3585 	mutex_lock(&codec->spdif_mutex);
3586 	cleanup_dig_out_stream(codec, mout->dig_out_nid);
3587 	mutex_unlock(&codec->spdif_mutex);
3588 	return 0;
3589 }
3590 EXPORT_SYMBOL_GPL(snd_hda_multi_out_dig_cleanup);
3591 
3592 /**
3593  * snd_hda_multi_out_dig_close - release the digital out stream
3594  * @codec: the HDA codec
3595  * @mout: hda_multi_out object
3596  */
3597 int snd_hda_multi_out_dig_close(struct hda_codec *codec,
3598 				struct hda_multi_out *mout)
3599 {
3600 	mutex_lock(&codec->spdif_mutex);
3601 	mout->dig_out_used = 0;
3602 	mutex_unlock(&codec->spdif_mutex);
3603 	return 0;
3604 }
3605 EXPORT_SYMBOL_GPL(snd_hda_multi_out_dig_close);
3606 
3607 /**
3608  * snd_hda_multi_out_analog_open - open analog outputs
3609  * @codec: the HDA codec
3610  * @mout: hda_multi_out object
3611  * @substream: PCM substream to assign
3612  * @hinfo: PCM information to assign
3613  *
3614  * Open analog outputs and set up the hw-constraints.
3615  * If the digital outputs can be opened as slave, open the digital
3616  * outputs, too.
3617  */
3618 int snd_hda_multi_out_analog_open(struct hda_codec *codec,
3619 				  struct hda_multi_out *mout,
3620 				  struct snd_pcm_substream *substream,
3621 				  struct hda_pcm_stream *hinfo)
3622 {
3623 	struct snd_pcm_runtime *runtime = substream->runtime;
3624 	runtime->hw.channels_max = mout->max_channels;
3625 	if (mout->dig_out_nid) {
3626 		if (!mout->analog_rates) {
3627 			mout->analog_rates = hinfo->rates;
3628 			mout->analog_formats = hinfo->formats;
3629 			mout->analog_maxbps = hinfo->maxbps;
3630 		} else {
3631 			runtime->hw.rates = mout->analog_rates;
3632 			runtime->hw.formats = mout->analog_formats;
3633 			hinfo->maxbps = mout->analog_maxbps;
3634 		}
3635 		if (!mout->spdif_rates) {
3636 			snd_hda_query_supported_pcm(codec, mout->dig_out_nid,
3637 						    &mout->spdif_rates,
3638 						    &mout->spdif_formats,
3639 						    &mout->spdif_maxbps);
3640 		}
3641 		mutex_lock(&codec->spdif_mutex);
3642 		if (mout->share_spdif) {
3643 			if ((runtime->hw.rates & mout->spdif_rates) &&
3644 			    (runtime->hw.formats & mout->spdif_formats)) {
3645 				runtime->hw.rates &= mout->spdif_rates;
3646 				runtime->hw.formats &= mout->spdif_formats;
3647 				if (mout->spdif_maxbps < hinfo->maxbps)
3648 					hinfo->maxbps = mout->spdif_maxbps;
3649 			} else {
3650 				mout->share_spdif = 0;
3651 				/* FIXME: need notify? */
3652 			}
3653 		}
3654 		mutex_unlock(&codec->spdif_mutex);
3655 	}
3656 	return snd_pcm_hw_constraint_step(substream->runtime, 0,
3657 					  SNDRV_PCM_HW_PARAM_CHANNELS, 2);
3658 }
3659 EXPORT_SYMBOL_GPL(snd_hda_multi_out_analog_open);
3660 
3661 /**
3662  * snd_hda_multi_out_analog_prepare - Preapre the analog outputs.
3663  * @codec: the HDA codec
3664  * @mout: hda_multi_out object
3665  * @stream_tag: stream tag to assign
3666  * @format: format id to assign
3667  * @substream: PCM substream to assign
3668  *
3669  * Set up the i/o for analog out.
3670  * When the digital out is available, copy the front out to digital out, too.
3671  */
3672 int snd_hda_multi_out_analog_prepare(struct hda_codec *codec,
3673 				     struct hda_multi_out *mout,
3674 				     unsigned int stream_tag,
3675 				     unsigned int format,
3676 				     struct snd_pcm_substream *substream)
3677 {
3678 	const hda_nid_t *nids = mout->dac_nids;
3679 	int chs = substream->runtime->channels;
3680 	struct hda_spdif_out *spdif;
3681 	int i;
3682 
3683 	mutex_lock(&codec->spdif_mutex);
3684 	spdif = snd_hda_spdif_out_of_nid(codec, mout->dig_out_nid);
3685 	if (mout->dig_out_nid && mout->share_spdif &&
3686 	    mout->dig_out_used != HDA_DIG_EXCLUSIVE) {
3687 		if (chs == 2 && spdif != NULL &&
3688 		    snd_hda_is_supported_format(codec, mout->dig_out_nid,
3689 						format) &&
3690 		    !(spdif->status & IEC958_AES0_NONAUDIO)) {
3691 			mout->dig_out_used = HDA_DIG_ANALOG_DUP;
3692 			setup_dig_out_stream(codec, mout->dig_out_nid,
3693 					     stream_tag, format);
3694 		} else {
3695 			mout->dig_out_used = 0;
3696 			cleanup_dig_out_stream(codec, mout->dig_out_nid);
3697 		}
3698 	}
3699 	mutex_unlock(&codec->spdif_mutex);
3700 
3701 	/* front */
3702 	snd_hda_codec_setup_stream(codec, nids[HDA_FRONT], stream_tag,
3703 				   0, format);
3704 	if (!mout->no_share_stream &&
3705 	    mout->hp_nid && mout->hp_nid != nids[HDA_FRONT])
3706 		/* headphone out will just decode front left/right (stereo) */
3707 		snd_hda_codec_setup_stream(codec, mout->hp_nid, stream_tag,
3708 					   0, format);
3709 	/* extra outputs copied from front */
3710 	for (i = 0; i < ARRAY_SIZE(mout->hp_out_nid); i++)
3711 		if (!mout->no_share_stream && mout->hp_out_nid[i])
3712 			snd_hda_codec_setup_stream(codec,
3713 						   mout->hp_out_nid[i],
3714 						   stream_tag, 0, format);
3715 
3716 	/* surrounds */
3717 	for (i = 1; i < mout->num_dacs; i++) {
3718 		if (chs >= (i + 1) * 2) /* independent out */
3719 			snd_hda_codec_setup_stream(codec, nids[i], stream_tag,
3720 						   i * 2, format);
3721 		else if (!mout->no_share_stream) /* copy front */
3722 			snd_hda_codec_setup_stream(codec, nids[i], stream_tag,
3723 						   0, format);
3724 	}
3725 
3726 	/* extra surrounds */
3727 	for (i = 0; i < ARRAY_SIZE(mout->extra_out_nid); i++) {
3728 		int ch = 0;
3729 		if (!mout->extra_out_nid[i])
3730 			break;
3731 		if (chs >= (i + 1) * 2)
3732 			ch = i * 2;
3733 		else if (!mout->no_share_stream)
3734 			break;
3735 		snd_hda_codec_setup_stream(codec, mout->extra_out_nid[i],
3736 					   stream_tag, ch, format);
3737 	}
3738 
3739 	return 0;
3740 }
3741 EXPORT_SYMBOL_GPL(snd_hda_multi_out_analog_prepare);
3742 
3743 /**
3744  * snd_hda_multi_out_analog_cleanup - clean up the setting for analog out
3745  * @codec: the HDA codec
3746  * @mout: hda_multi_out object
3747  */
3748 int snd_hda_multi_out_analog_cleanup(struct hda_codec *codec,
3749 				     struct hda_multi_out *mout)
3750 {
3751 	const hda_nid_t *nids = mout->dac_nids;
3752 	int i;
3753 
3754 	for (i = 0; i < mout->num_dacs; i++)
3755 		snd_hda_codec_cleanup_stream(codec, nids[i]);
3756 	if (mout->hp_nid)
3757 		snd_hda_codec_cleanup_stream(codec, mout->hp_nid);
3758 	for (i = 0; i < ARRAY_SIZE(mout->hp_out_nid); i++)
3759 		if (mout->hp_out_nid[i])
3760 			snd_hda_codec_cleanup_stream(codec,
3761 						     mout->hp_out_nid[i]);
3762 	for (i = 0; i < ARRAY_SIZE(mout->extra_out_nid); i++)
3763 		if (mout->extra_out_nid[i])
3764 			snd_hda_codec_cleanup_stream(codec,
3765 						     mout->extra_out_nid[i]);
3766 	mutex_lock(&codec->spdif_mutex);
3767 	if (mout->dig_out_nid && mout->dig_out_used == HDA_DIG_ANALOG_DUP) {
3768 		cleanup_dig_out_stream(codec, mout->dig_out_nid);
3769 		mout->dig_out_used = 0;
3770 	}
3771 	mutex_unlock(&codec->spdif_mutex);
3772 	return 0;
3773 }
3774 EXPORT_SYMBOL_GPL(snd_hda_multi_out_analog_cleanup);
3775 
3776 /**
3777  * snd_hda_get_default_vref - Get the default (mic) VREF pin bits
3778  * @codec: the HDA codec
3779  * @pin: referred pin NID
3780  *
3781  * Guess the suitable VREF pin bits to be set as the pin-control value.
3782  * Note: the function doesn't set the AC_PINCTL_IN_EN bit.
3783  */
3784 unsigned int snd_hda_get_default_vref(struct hda_codec *codec, hda_nid_t pin)
3785 {
3786 	unsigned int pincap;
3787 	unsigned int oldval;
3788 	oldval = snd_hda_codec_read(codec, pin, 0,
3789 				    AC_VERB_GET_PIN_WIDGET_CONTROL, 0);
3790 	pincap = snd_hda_query_pin_caps(codec, pin);
3791 	pincap = (pincap & AC_PINCAP_VREF) >> AC_PINCAP_VREF_SHIFT;
3792 	/* Exception: if the default pin setup is vref50, we give it priority */
3793 	if ((pincap & AC_PINCAP_VREF_80) && oldval != PIN_VREF50)
3794 		return AC_PINCTL_VREF_80;
3795 	else if (pincap & AC_PINCAP_VREF_50)
3796 		return AC_PINCTL_VREF_50;
3797 	else if (pincap & AC_PINCAP_VREF_100)
3798 		return AC_PINCTL_VREF_100;
3799 	else if (pincap & AC_PINCAP_VREF_GRD)
3800 		return AC_PINCTL_VREF_GRD;
3801 	return AC_PINCTL_VREF_HIZ;
3802 }
3803 EXPORT_SYMBOL_GPL(snd_hda_get_default_vref);
3804 
3805 /**
3806  * snd_hda_correct_pin_ctl - correct the pin ctl value for matching with the pin cap
3807  * @codec: the HDA codec
3808  * @pin: referred pin NID
3809  * @val: pin ctl value to audit
3810  */
3811 unsigned int snd_hda_correct_pin_ctl(struct hda_codec *codec,
3812 				     hda_nid_t pin, unsigned int val)
3813 {
3814 	static unsigned int cap_lists[][2] = {
3815 		{ AC_PINCTL_VREF_100, AC_PINCAP_VREF_100 },
3816 		{ AC_PINCTL_VREF_80, AC_PINCAP_VREF_80 },
3817 		{ AC_PINCTL_VREF_50, AC_PINCAP_VREF_50 },
3818 		{ AC_PINCTL_VREF_GRD, AC_PINCAP_VREF_GRD },
3819 	};
3820 	unsigned int cap;
3821 
3822 	if (!val)
3823 		return 0;
3824 	cap = snd_hda_query_pin_caps(codec, pin);
3825 	if (!cap)
3826 		return val; /* don't know what to do... */
3827 
3828 	if (val & AC_PINCTL_OUT_EN) {
3829 		if (!(cap & AC_PINCAP_OUT))
3830 			val &= ~(AC_PINCTL_OUT_EN | AC_PINCTL_HP_EN);
3831 		else if ((val & AC_PINCTL_HP_EN) && !(cap & AC_PINCAP_HP_DRV))
3832 			val &= ~AC_PINCTL_HP_EN;
3833 	}
3834 
3835 	if (val & AC_PINCTL_IN_EN) {
3836 		if (!(cap & AC_PINCAP_IN))
3837 			val &= ~(AC_PINCTL_IN_EN | AC_PINCTL_VREFEN);
3838 		else {
3839 			unsigned int vcap, vref;
3840 			int i;
3841 			vcap = (cap & AC_PINCAP_VREF) >> AC_PINCAP_VREF_SHIFT;
3842 			vref = val & AC_PINCTL_VREFEN;
3843 			for (i = 0; i < ARRAY_SIZE(cap_lists); i++) {
3844 				if (vref == cap_lists[i][0] &&
3845 				    !(vcap & cap_lists[i][1])) {
3846 					if (i == ARRAY_SIZE(cap_lists) - 1)
3847 						vref = AC_PINCTL_VREF_HIZ;
3848 					else
3849 						vref = cap_lists[i + 1][0];
3850 				}
3851 			}
3852 			val &= ~AC_PINCTL_VREFEN;
3853 			val |= vref;
3854 		}
3855 	}
3856 
3857 	return val;
3858 }
3859 EXPORT_SYMBOL_GPL(snd_hda_correct_pin_ctl);
3860 
3861 /**
3862  * _snd_hda_pin_ctl - Helper to set pin ctl value
3863  * @codec: the HDA codec
3864  * @pin: referred pin NID
3865  * @val: pin control value to set
3866  * @cached: access over codec pinctl cache or direct write
3867  *
3868  * This function is a helper to set a pin ctl value more safely.
3869  * It corrects the pin ctl value via snd_hda_correct_pin_ctl(), stores the
3870  * value in pin target array via snd_hda_codec_set_pin_target(), then
3871  * actually writes the value via either snd_hda_codec_write_cache() or
3872  * snd_hda_codec_write() depending on @cached flag.
3873  */
3874 int _snd_hda_set_pin_ctl(struct hda_codec *codec, hda_nid_t pin,
3875 			 unsigned int val, bool cached)
3876 {
3877 	val = snd_hda_correct_pin_ctl(codec, pin, val);
3878 	snd_hda_codec_set_pin_target(codec, pin, val);
3879 	if (cached)
3880 		return snd_hda_codec_write_cache(codec, pin, 0,
3881 				AC_VERB_SET_PIN_WIDGET_CONTROL, val);
3882 	else
3883 		return snd_hda_codec_write(codec, pin, 0,
3884 					   AC_VERB_SET_PIN_WIDGET_CONTROL, val);
3885 }
3886 EXPORT_SYMBOL_GPL(_snd_hda_set_pin_ctl);
3887 
3888 /**
3889  * snd_hda_add_imux_item - Add an item to input_mux
3890  * @codec: the HDA codec
3891  * @imux: imux helper object
3892  * @label: the name of imux item to assign
3893  * @index: index number of imux item to assign
3894  * @type_idx: pointer to store the resultant label index
3895  *
3896  * When the same label is used already in the existing items, the number
3897  * suffix is appended to the label.  This label index number is stored
3898  * to type_idx when non-NULL pointer is given.
3899  */
3900 int snd_hda_add_imux_item(struct hda_codec *codec,
3901 			  struct hda_input_mux *imux, const char *label,
3902 			  int index, int *type_idx)
3903 {
3904 	int i, label_idx = 0;
3905 	if (imux->num_items >= HDA_MAX_NUM_INPUTS) {
3906 		codec_err(codec, "hda_codec: Too many imux items!\n");
3907 		return -EINVAL;
3908 	}
3909 	for (i = 0; i < imux->num_items; i++) {
3910 		if (!strncmp(label, imux->items[i].label, strlen(label)))
3911 			label_idx++;
3912 	}
3913 	if (type_idx)
3914 		*type_idx = label_idx;
3915 	if (label_idx > 0)
3916 		snprintf(imux->items[imux->num_items].label,
3917 			 sizeof(imux->items[imux->num_items].label),
3918 			 "%s %d", label, label_idx);
3919 	else
3920 		strlcpy(imux->items[imux->num_items].label, label,
3921 			sizeof(imux->items[imux->num_items].label));
3922 	imux->items[imux->num_items].index = index;
3923 	imux->num_items++;
3924 	return 0;
3925 }
3926 EXPORT_SYMBOL_GPL(snd_hda_add_imux_item);
3927 
3928 /**
3929  * snd_hda_bus_reset_codecs - Reset the bus
3930  * @bus: HD-audio bus
3931  */
3932 void snd_hda_bus_reset_codecs(struct hda_bus *bus)
3933 {
3934 	struct hda_codec *codec;
3935 
3936 	list_for_each_codec(codec, bus) {
3937 		/* FIXME: maybe a better way needed for forced reset */
3938 		cancel_delayed_work_sync(&codec->jackpoll_work);
3939 #ifdef CONFIG_PM
3940 		if (hda_codec_is_power_on(codec)) {
3941 			hda_call_codec_suspend(codec);
3942 			hda_call_codec_resume(codec);
3943 		}
3944 #endif
3945 	}
3946 }
3947 
3948 /**
3949  * snd_print_pcm_bits - Print the supported PCM fmt bits to the string buffer
3950  * @pcm: PCM caps bits
3951  * @buf: the string buffer to write
3952  * @buflen: the max buffer length
3953  *
3954  * used by hda_proc.c and hda_eld.c
3955  */
3956 void snd_print_pcm_bits(int pcm, char *buf, int buflen)
3957 {
3958 	static unsigned int bits[] = { 8, 16, 20, 24, 32 };
3959 	int i, j;
3960 
3961 	for (i = 0, j = 0; i < ARRAY_SIZE(bits); i++)
3962 		if (pcm & (AC_SUPPCM_BITS_8 << i))
3963 			j += snprintf(buf + j, buflen - j,  " %d", bits[i]);
3964 
3965 	buf[j] = '\0'; /* necessary when j == 0 */
3966 }
3967 EXPORT_SYMBOL_GPL(snd_print_pcm_bits);
3968 
3969 MODULE_DESCRIPTION("HDA codec core");
3970 MODULE_LICENSE("GPL");
3971