xref: /openbmc/linux/sound/pci/hda/hda_codec.c (revision 192c4ccc)
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  * Universal Interface for Intel High Definition Audio Codec
4  *
5  * Copyright (c) 2004 Takashi Iwai <tiwai@suse.de>
6  */
7 
8 #include <linux/init.h>
9 #include <linux/delay.h>
10 #include <linux/slab.h>
11 #include <linux/mutex.h>
12 #include <linux/module.h>
13 #include <linux/pm.h>
14 #include <linux/pm_runtime.h>
15 #include <sound/core.h>
16 #include <sound/hda_codec.h>
17 #include <sound/asoundef.h>
18 #include <sound/tlv.h>
19 #include <sound/initval.h>
20 #include <sound/jack.h>
21 #include "hda_local.h"
22 #include "hda_beep.h"
23 #include "hda_jack.h"
24 #include <sound/hda_hwdep.h>
25 #include <sound/hda_component.h>
26 
27 #define codec_in_pm(codec)		snd_hdac_is_in_pm(&codec->core)
28 #define hda_codec_is_power_on(codec)	snd_hdac_is_power_on(&codec->core)
29 #define codec_has_epss(codec) \
30 	((codec)->core.power_caps & AC_PWRST_EPSS)
31 #define codec_has_clkstop(codec) \
32 	((codec)->core.power_caps & AC_PWRST_CLKSTOP)
33 
34 /*
35  * Send and receive a verb - passed to exec_verb override for hdac_device
36  */
codec_exec_verb(struct hdac_device * dev,unsigned int cmd,unsigned int flags,unsigned int * res)37 static int codec_exec_verb(struct hdac_device *dev, unsigned int cmd,
38 			   unsigned int flags, unsigned int *res)
39 {
40 	struct hda_codec *codec = container_of(dev, struct hda_codec, core);
41 	struct hda_bus *bus = codec->bus;
42 	int err;
43 
44 	if (cmd == ~0)
45 		return -1;
46 
47  again:
48 	snd_hda_power_up_pm(codec);
49 	mutex_lock(&bus->core.cmd_mutex);
50 	if (flags & HDA_RW_NO_RESPONSE_FALLBACK)
51 		bus->no_response_fallback = 1;
52 	err = snd_hdac_bus_exec_verb_unlocked(&bus->core, codec->core.addr,
53 					      cmd, res);
54 	bus->no_response_fallback = 0;
55 	mutex_unlock(&bus->core.cmd_mutex);
56 	snd_hda_power_down_pm(codec);
57 	if (!codec_in_pm(codec) && res && err == -EAGAIN) {
58 		if (bus->response_reset) {
59 			codec_dbg(codec,
60 				  "resetting BUS due to fatal communication error\n");
61 			snd_hda_bus_reset(bus);
62 		}
63 		goto again;
64 	}
65 	/* clear reset-flag when the communication gets recovered */
66 	if (!err || codec_in_pm(codec))
67 		bus->response_reset = 0;
68 	return err;
69 }
70 
71 /**
72  * snd_hda_sequence_write - sequence writes
73  * @codec: the HDA codec
74  * @seq: VERB array to send
75  *
76  * Send the commands sequentially from the given array.
77  * The array must be terminated with NID=0.
78  */
snd_hda_sequence_write(struct hda_codec * codec,const struct hda_verb * seq)79 void snd_hda_sequence_write(struct hda_codec *codec, const struct hda_verb *seq)
80 {
81 	for (; seq->nid; seq++)
82 		snd_hda_codec_write(codec, seq->nid, 0, seq->verb, seq->param);
83 }
84 EXPORT_SYMBOL_GPL(snd_hda_sequence_write);
85 
86 /* connection list element */
87 struct hda_conn_list {
88 	struct list_head list;
89 	int len;
90 	hda_nid_t nid;
91 	hda_nid_t conns[];
92 };
93 
94 /* look up the cached results */
95 static struct hda_conn_list *
lookup_conn_list(struct hda_codec * codec,hda_nid_t nid)96 lookup_conn_list(struct hda_codec *codec, hda_nid_t nid)
97 {
98 	struct hda_conn_list *p;
99 	list_for_each_entry(p, &codec->conn_list, list) {
100 		if (p->nid == nid)
101 			return p;
102 	}
103 	return NULL;
104 }
105 
add_conn_list(struct hda_codec * codec,hda_nid_t nid,int len,const hda_nid_t * list)106 static int add_conn_list(struct hda_codec *codec, hda_nid_t nid, int len,
107 			 const hda_nid_t *list)
108 {
109 	struct hda_conn_list *p;
110 
111 	p = kmalloc(struct_size(p, conns, len), GFP_KERNEL);
112 	if (!p)
113 		return -ENOMEM;
114 	p->len = len;
115 	p->nid = nid;
116 	memcpy(p->conns, list, len * sizeof(hda_nid_t));
117 	list_add(&p->list, &codec->conn_list);
118 	return 0;
119 }
120 
remove_conn_list(struct hda_codec * codec)121 static void remove_conn_list(struct hda_codec *codec)
122 {
123 	while (!list_empty(&codec->conn_list)) {
124 		struct hda_conn_list *p;
125 		p = list_first_entry(&codec->conn_list, typeof(*p), list);
126 		list_del(&p->list);
127 		kfree(p);
128 	}
129 }
130 
131 /* read the connection and add to the cache */
read_and_add_raw_conns(struct hda_codec * codec,hda_nid_t nid)132 static int read_and_add_raw_conns(struct hda_codec *codec, hda_nid_t nid)
133 {
134 	hda_nid_t list[32];
135 	hda_nid_t *result = list;
136 	int len;
137 
138 	len = snd_hda_get_raw_connections(codec, nid, list, ARRAY_SIZE(list));
139 	if (len == -ENOSPC) {
140 		len = snd_hda_get_num_raw_conns(codec, nid);
141 		result = kmalloc_array(len, sizeof(hda_nid_t), GFP_KERNEL);
142 		if (!result)
143 			return -ENOMEM;
144 		len = snd_hda_get_raw_connections(codec, nid, result, len);
145 	}
146 	if (len >= 0)
147 		len = snd_hda_override_conn_list(codec, nid, len, result);
148 	if (result != list)
149 		kfree(result);
150 	return len;
151 }
152 
153 /**
154  * snd_hda_get_conn_list - get connection list
155  * @codec: the HDA codec
156  * @nid: NID to parse
157  * @listp: the pointer to store NID list
158  *
159  * Parses the connection list of the given widget and stores the pointer
160  * to the list of NIDs.
161  *
162  * Returns the number of connections, or a negative error code.
163  *
164  * Note that the returned pointer isn't protected against the list
165  * modification.  If snd_hda_override_conn_list() might be called
166  * concurrently, protect with a mutex appropriately.
167  */
snd_hda_get_conn_list(struct hda_codec * codec,hda_nid_t nid,const hda_nid_t ** listp)168 int snd_hda_get_conn_list(struct hda_codec *codec, hda_nid_t nid,
169 			  const hda_nid_t **listp)
170 {
171 	bool added = false;
172 
173 	for (;;) {
174 		int err;
175 		const struct hda_conn_list *p;
176 
177 		/* if the connection-list is already cached, read it */
178 		p = lookup_conn_list(codec, nid);
179 		if (p) {
180 			if (listp)
181 				*listp = p->conns;
182 			return p->len;
183 		}
184 		if (snd_BUG_ON(added))
185 			return -EINVAL;
186 
187 		err = read_and_add_raw_conns(codec, nid);
188 		if (err < 0)
189 			return err;
190 		added = true;
191 	}
192 }
193 EXPORT_SYMBOL_GPL(snd_hda_get_conn_list);
194 
195 /**
196  * snd_hda_get_connections - copy connection list
197  * @codec: the HDA codec
198  * @nid: NID to parse
199  * @conn_list: connection list array; when NULL, checks only the size
200  * @max_conns: max. number of connections to store
201  *
202  * Parses the connection list of the given widget and stores the list
203  * of NIDs.
204  *
205  * Returns the number of connections, or a negative error code.
206  */
snd_hda_get_connections(struct hda_codec * codec,hda_nid_t nid,hda_nid_t * conn_list,int max_conns)207 int snd_hda_get_connections(struct hda_codec *codec, hda_nid_t nid,
208 			    hda_nid_t *conn_list, int max_conns)
209 {
210 	const hda_nid_t *list;
211 	int len = snd_hda_get_conn_list(codec, nid, &list);
212 
213 	if (len > 0 && conn_list) {
214 		if (len > max_conns) {
215 			codec_err(codec, "Too many connections %d for NID 0x%x\n",
216 				   len, nid);
217 			return -EINVAL;
218 		}
219 		memcpy(conn_list, list, len * sizeof(hda_nid_t));
220 	}
221 
222 	return len;
223 }
224 EXPORT_SYMBOL_GPL(snd_hda_get_connections);
225 
226 /**
227  * snd_hda_override_conn_list - add/modify the connection-list to cache
228  * @codec: the HDA codec
229  * @nid: NID to parse
230  * @len: number of connection list entries
231  * @list: the list of connection entries
232  *
233  * Add or modify the given connection-list to the cache.  If the corresponding
234  * cache already exists, invalidate it and append a new one.
235  *
236  * Returns zero or a negative error code.
237  */
snd_hda_override_conn_list(struct hda_codec * codec,hda_nid_t nid,int len,const hda_nid_t * list)238 int snd_hda_override_conn_list(struct hda_codec *codec, hda_nid_t nid, int len,
239 			       const hda_nid_t *list)
240 {
241 	struct hda_conn_list *p;
242 
243 	p = lookup_conn_list(codec, nid);
244 	if (p) {
245 		list_del(&p->list);
246 		kfree(p);
247 	}
248 
249 	return add_conn_list(codec, nid, len, list);
250 }
251 EXPORT_SYMBOL_GPL(snd_hda_override_conn_list);
252 
253 /**
254  * snd_hda_get_conn_index - get the connection index of the given NID
255  * @codec: the HDA codec
256  * @mux: NID containing the list
257  * @nid: NID to select
258  * @recursive: 1 when searching NID recursively, otherwise 0
259  *
260  * Parses the connection list of the widget @mux and checks whether the
261  * widget @nid is present.  If it is, return the connection index.
262  * Otherwise it returns -1.
263  */
snd_hda_get_conn_index(struct hda_codec * codec,hda_nid_t mux,hda_nid_t nid,int recursive)264 int snd_hda_get_conn_index(struct hda_codec *codec, hda_nid_t mux,
265 			   hda_nid_t nid, int recursive)
266 {
267 	const hda_nid_t *conn;
268 	int i, nums;
269 
270 	nums = snd_hda_get_conn_list(codec, mux, &conn);
271 	for (i = 0; i < nums; i++)
272 		if (conn[i] == nid)
273 			return i;
274 	if (!recursive)
275 		return -1;
276 	if (recursive > 10) {
277 		codec_dbg(codec, "too deep connection for 0x%x\n", nid);
278 		return -1;
279 	}
280 	recursive++;
281 	for (i = 0; i < nums; i++) {
282 		unsigned int type = get_wcaps_type(get_wcaps(codec, conn[i]));
283 		if (type == AC_WID_PIN || type == AC_WID_AUD_OUT)
284 			continue;
285 		if (snd_hda_get_conn_index(codec, conn[i], nid, recursive) >= 0)
286 			return i;
287 	}
288 	return -1;
289 }
290 EXPORT_SYMBOL_GPL(snd_hda_get_conn_index);
291 
292 /**
293  * snd_hda_get_num_devices - get DEVLIST_LEN parameter of the given widget
294  *  @codec: the HDA codec
295  *  @nid: NID of the pin to parse
296  *
297  * Get the device entry number on the given widget. This is a feature of
298  * DP MST audio. Each pin can have several device entries in it.
299  */
snd_hda_get_num_devices(struct hda_codec * codec,hda_nid_t nid)300 unsigned int snd_hda_get_num_devices(struct hda_codec *codec, hda_nid_t nid)
301 {
302 	unsigned int wcaps = get_wcaps(codec, nid);
303 	unsigned int parm;
304 
305 	if (!codec->dp_mst || !(wcaps & AC_WCAP_DIGITAL) ||
306 	    get_wcaps_type(wcaps) != AC_WID_PIN)
307 		return 0;
308 
309 	parm = snd_hdac_read_parm_uncached(&codec->core, nid, AC_PAR_DEVLIST_LEN);
310 	if (parm == -1)
311 		parm = 0;
312 	return parm & AC_DEV_LIST_LEN_MASK;
313 }
314 EXPORT_SYMBOL_GPL(snd_hda_get_num_devices);
315 
316 /**
317  * snd_hda_get_devices - copy device list without cache
318  * @codec: the HDA codec
319  * @nid: NID of the pin to parse
320  * @dev_list: device list array
321  * @max_devices: max. number of devices to store
322  *
323  * Copy the device list. This info is dynamic and so not cached.
324  * Currently called only from hda_proc.c, so not exported.
325  */
snd_hda_get_devices(struct hda_codec * codec,hda_nid_t nid,u8 * dev_list,int max_devices)326 int snd_hda_get_devices(struct hda_codec *codec, hda_nid_t nid,
327 			u8 *dev_list, int max_devices)
328 {
329 	unsigned int parm;
330 	int i, dev_len, devices;
331 
332 	parm = snd_hda_get_num_devices(codec, nid);
333 	if (!parm)	/* not multi-stream capable */
334 		return 0;
335 
336 	dev_len = parm + 1;
337 	dev_len = dev_len < max_devices ? dev_len : max_devices;
338 
339 	devices = 0;
340 	while (devices < dev_len) {
341 		if (snd_hdac_read(&codec->core, nid,
342 				  AC_VERB_GET_DEVICE_LIST, devices, &parm))
343 			break; /* error */
344 
345 		for (i = 0; i < 8; i++) {
346 			dev_list[devices] = (u8)parm;
347 			parm >>= 4;
348 			devices++;
349 			if (devices >= dev_len)
350 				break;
351 		}
352 	}
353 	return devices;
354 }
355 
356 /**
357  * snd_hda_get_dev_select - get device entry select on the pin
358  * @codec: the HDA codec
359  * @nid: NID of the pin to get device entry select
360  *
361  * Get the devcie entry select on the pin. Return the device entry
362  * id selected on the pin. Return 0 means the first device entry
363  * is selected or MST is not supported.
364  */
snd_hda_get_dev_select(struct hda_codec * codec,hda_nid_t nid)365 int snd_hda_get_dev_select(struct hda_codec *codec, hda_nid_t nid)
366 {
367 	/* not support dp_mst will always return 0, using first dev_entry */
368 	if (!codec->dp_mst)
369 		return 0;
370 
371 	return snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_DEVICE_SEL, 0);
372 }
373 EXPORT_SYMBOL_GPL(snd_hda_get_dev_select);
374 
375 /**
376  * snd_hda_set_dev_select - set device entry select on the pin
377  * @codec: the HDA codec
378  * @nid: NID of the pin to set device entry select
379  * @dev_id: device entry id to be set
380  *
381  * Set the device entry select on the pin nid.
382  */
snd_hda_set_dev_select(struct hda_codec * codec,hda_nid_t nid,int dev_id)383 int snd_hda_set_dev_select(struct hda_codec *codec, hda_nid_t nid, int dev_id)
384 {
385 	int ret, num_devices;
386 
387 	/* not support dp_mst will always return 0, using first dev_entry */
388 	if (!codec->dp_mst)
389 		return 0;
390 
391 	/* AC_PAR_DEVLIST_LEN is 0 based. */
392 	num_devices = snd_hda_get_num_devices(codec, nid) + 1;
393 	/* If Device List Length is 0 (num_device = 1),
394 	 * the pin is not multi stream capable.
395 	 * Do nothing in this case.
396 	 */
397 	if (num_devices == 1)
398 		return 0;
399 
400 	/* Behavior of setting index being equal to or greater than
401 	 * Device List Length is not predictable
402 	 */
403 	if (num_devices <= dev_id)
404 		return -EINVAL;
405 
406 	ret = snd_hda_codec_write(codec, nid, 0,
407 			AC_VERB_SET_DEVICE_SEL, dev_id);
408 
409 	return ret;
410 }
411 EXPORT_SYMBOL_GPL(snd_hda_set_dev_select);
412 
413 /*
414  * read widget caps for each widget and store in cache
415  */
read_widget_caps(struct hda_codec * codec,hda_nid_t fg_node)416 static int read_widget_caps(struct hda_codec *codec, hda_nid_t fg_node)
417 {
418 	int i;
419 	hda_nid_t nid;
420 
421 	codec->wcaps = kmalloc_array(codec->core.num_nodes, 4, GFP_KERNEL);
422 	if (!codec->wcaps)
423 		return -ENOMEM;
424 	nid = codec->core.start_nid;
425 	for (i = 0; i < codec->core.num_nodes; i++, nid++)
426 		codec->wcaps[i] = snd_hdac_read_parm_uncached(&codec->core,
427 					nid, AC_PAR_AUDIO_WIDGET_CAP);
428 	return 0;
429 }
430 
431 /* read all pin default configurations and save codec->init_pins */
read_pin_defaults(struct hda_codec * codec)432 static int read_pin_defaults(struct hda_codec *codec)
433 {
434 	hda_nid_t nid;
435 
436 	for_each_hda_codec_node(nid, codec) {
437 		struct hda_pincfg *pin;
438 		unsigned int wcaps = get_wcaps(codec, nid);
439 		unsigned int wid_type = get_wcaps_type(wcaps);
440 		if (wid_type != AC_WID_PIN)
441 			continue;
442 		pin = snd_array_new(&codec->init_pins);
443 		if (!pin)
444 			return -ENOMEM;
445 		pin->nid = nid;
446 		pin->cfg = snd_hda_codec_read(codec, nid, 0,
447 					      AC_VERB_GET_CONFIG_DEFAULT, 0);
448 		/*
449 		 * all device entries are the same widget control so far
450 		 * fixme: if any codec is different, need fix here
451 		 */
452 		pin->ctrl = snd_hda_codec_read(codec, nid, 0,
453 					       AC_VERB_GET_PIN_WIDGET_CONTROL,
454 					       0);
455 	}
456 	return 0;
457 }
458 
459 /* look up the given pin config list and return the item matching with NID */
look_up_pincfg(struct hda_codec * codec,struct snd_array * array,hda_nid_t nid)460 static struct hda_pincfg *look_up_pincfg(struct hda_codec *codec,
461 					 struct snd_array *array,
462 					 hda_nid_t nid)
463 {
464 	struct hda_pincfg *pin;
465 	int i;
466 
467 	snd_array_for_each(array, i, pin) {
468 		if (pin->nid == nid)
469 			return pin;
470 	}
471 	return NULL;
472 }
473 
474 /* set the current pin config value for the given NID.
475  * the value is cached, and read via snd_hda_codec_get_pincfg()
476  */
snd_hda_add_pincfg(struct hda_codec * codec,struct snd_array * list,hda_nid_t nid,unsigned int cfg)477 int snd_hda_add_pincfg(struct hda_codec *codec, struct snd_array *list,
478 		       hda_nid_t nid, unsigned int cfg)
479 {
480 	struct hda_pincfg *pin;
481 
482 	/* the check below may be invalid when pins are added by a fixup
483 	 * dynamically (e.g. via snd_hda_codec_update_widgets()), so disabled
484 	 * for now
485 	 */
486 	/*
487 	if (get_wcaps_type(get_wcaps(codec, nid)) != AC_WID_PIN)
488 		return -EINVAL;
489 	*/
490 
491 	pin = look_up_pincfg(codec, list, nid);
492 	if (!pin) {
493 		pin = snd_array_new(list);
494 		if (!pin)
495 			return -ENOMEM;
496 		pin->nid = nid;
497 	}
498 	pin->cfg = cfg;
499 	return 0;
500 }
501 
502 /**
503  * snd_hda_codec_set_pincfg - Override a pin default configuration
504  * @codec: the HDA codec
505  * @nid: NID to set the pin config
506  * @cfg: the pin default config value
507  *
508  * Override a pin default configuration value in the cache.
509  * This value can be read by snd_hda_codec_get_pincfg() in a higher
510  * priority than the real hardware value.
511  */
snd_hda_codec_set_pincfg(struct hda_codec * codec,hda_nid_t nid,unsigned int cfg)512 int snd_hda_codec_set_pincfg(struct hda_codec *codec,
513 			     hda_nid_t nid, unsigned int cfg)
514 {
515 	return snd_hda_add_pincfg(codec, &codec->driver_pins, nid, cfg);
516 }
517 EXPORT_SYMBOL_GPL(snd_hda_codec_set_pincfg);
518 
519 /**
520  * snd_hda_codec_get_pincfg - Obtain a pin-default configuration
521  * @codec: the HDA codec
522  * @nid: NID to get the pin config
523  *
524  * Get the current pin config value of the given pin NID.
525  * If the pincfg value is cached or overridden via sysfs or driver,
526  * returns the cached value.
527  */
snd_hda_codec_get_pincfg(struct hda_codec * codec,hda_nid_t nid)528 unsigned int snd_hda_codec_get_pincfg(struct hda_codec *codec, hda_nid_t nid)
529 {
530 	struct hda_pincfg *pin;
531 
532 #ifdef CONFIG_SND_HDA_RECONFIG
533 	{
534 		unsigned int cfg = 0;
535 		mutex_lock(&codec->user_mutex);
536 		pin = look_up_pincfg(codec, &codec->user_pins, nid);
537 		if (pin)
538 			cfg = pin->cfg;
539 		mutex_unlock(&codec->user_mutex);
540 		if (cfg)
541 			return cfg;
542 	}
543 #endif
544 	pin = look_up_pincfg(codec, &codec->driver_pins, nid);
545 	if (pin)
546 		return pin->cfg;
547 	pin = look_up_pincfg(codec, &codec->init_pins, nid);
548 	if (pin)
549 		return pin->cfg;
550 	return 0;
551 }
552 EXPORT_SYMBOL_GPL(snd_hda_codec_get_pincfg);
553 
554 /**
555  * snd_hda_codec_set_pin_target - remember the current pinctl target value
556  * @codec: the HDA codec
557  * @nid: pin NID
558  * @val: assigned pinctl value
559  *
560  * This function stores the given value to a pinctl target value in the
561  * pincfg table.  This isn't always as same as the actually written value
562  * but can be referred at any time via snd_hda_codec_get_pin_target().
563  */
snd_hda_codec_set_pin_target(struct hda_codec * codec,hda_nid_t nid,unsigned int val)564 int snd_hda_codec_set_pin_target(struct hda_codec *codec, hda_nid_t nid,
565 				 unsigned int val)
566 {
567 	struct hda_pincfg *pin;
568 
569 	pin = look_up_pincfg(codec, &codec->init_pins, nid);
570 	if (!pin)
571 		return -EINVAL;
572 	pin->target = val;
573 	return 0;
574 }
575 EXPORT_SYMBOL_GPL(snd_hda_codec_set_pin_target);
576 
577 /**
578  * snd_hda_codec_get_pin_target - return the current pinctl target value
579  * @codec: the HDA codec
580  * @nid: pin NID
581  */
snd_hda_codec_get_pin_target(struct hda_codec * codec,hda_nid_t nid)582 int snd_hda_codec_get_pin_target(struct hda_codec *codec, hda_nid_t nid)
583 {
584 	struct hda_pincfg *pin;
585 
586 	pin = look_up_pincfg(codec, &codec->init_pins, nid);
587 	if (!pin)
588 		return 0;
589 	return pin->target;
590 }
591 EXPORT_SYMBOL_GPL(snd_hda_codec_get_pin_target);
592 
593 /**
594  * snd_hda_shutup_pins - Shut up all pins
595  * @codec: the HDA codec
596  *
597  * Clear all pin controls to shup up before suspend for avoiding click noise.
598  * The controls aren't cached so that they can be resumed properly.
599  */
snd_hda_shutup_pins(struct hda_codec * codec)600 void snd_hda_shutup_pins(struct hda_codec *codec)
601 {
602 	const struct hda_pincfg *pin;
603 	int i;
604 
605 	/* don't shut up pins when unloading the driver; otherwise it breaks
606 	 * the default pin setup at the next load of the driver
607 	 */
608 	if (codec->bus->shutdown)
609 		return;
610 	snd_array_for_each(&codec->init_pins, i, pin) {
611 		/* use read here for syncing after issuing each verb */
612 		snd_hda_codec_read(codec, pin->nid, 0,
613 				   AC_VERB_SET_PIN_WIDGET_CONTROL, 0);
614 	}
615 	codec->pins_shutup = 1;
616 }
617 EXPORT_SYMBOL_GPL(snd_hda_shutup_pins);
618 
619 #ifdef CONFIG_PM
620 /* Restore the pin controls cleared previously via snd_hda_shutup_pins() */
restore_shutup_pins(struct hda_codec * codec)621 static void restore_shutup_pins(struct hda_codec *codec)
622 {
623 	const struct hda_pincfg *pin;
624 	int i;
625 
626 	if (!codec->pins_shutup)
627 		return;
628 	if (codec->bus->shutdown)
629 		return;
630 	snd_array_for_each(&codec->init_pins, i, pin) {
631 		snd_hda_codec_write(codec, pin->nid, 0,
632 				    AC_VERB_SET_PIN_WIDGET_CONTROL,
633 				    pin->ctrl);
634 	}
635 	codec->pins_shutup = 0;
636 }
637 #endif
638 
hda_jackpoll_work(struct work_struct * work)639 static void hda_jackpoll_work(struct work_struct *work)
640 {
641 	struct hda_codec *codec =
642 		container_of(work, struct hda_codec, jackpoll_work.work);
643 
644 	/* for non-polling trigger: we need nothing if already powered on */
645 	if (!codec->jackpoll_interval && snd_hdac_is_power_on(&codec->core))
646 		return;
647 
648 	/* the power-up/down sequence triggers the runtime resume */
649 	snd_hda_power_up_pm(codec);
650 	/* update jacks manually if polling is required, too */
651 	if (codec->jackpoll_interval) {
652 		snd_hda_jack_set_dirty_all(codec);
653 		snd_hda_jack_poll_all(codec);
654 	}
655 	snd_hda_power_down_pm(codec);
656 
657 	if (!codec->jackpoll_interval)
658 		return;
659 
660 	schedule_delayed_work(&codec->jackpoll_work,
661 			      codec->jackpoll_interval);
662 }
663 
664 /* release all pincfg lists */
free_init_pincfgs(struct hda_codec * codec)665 static void free_init_pincfgs(struct hda_codec *codec)
666 {
667 	snd_array_free(&codec->driver_pins);
668 #ifdef CONFIG_SND_HDA_RECONFIG
669 	snd_array_free(&codec->user_pins);
670 #endif
671 	snd_array_free(&codec->init_pins);
672 }
673 
674 /*
675  * audio-converter setup caches
676  */
677 struct hda_cvt_setup {
678 	hda_nid_t nid;
679 	u8 stream_tag;
680 	u8 channel_id;
681 	u16 format_id;
682 	unsigned char active;	/* cvt is currently used */
683 	unsigned char dirty;	/* setups should be cleared */
684 };
685 
686 /* get or create a cache entry for the given audio converter NID */
687 static struct hda_cvt_setup *
get_hda_cvt_setup(struct hda_codec * codec,hda_nid_t nid)688 get_hda_cvt_setup(struct hda_codec *codec, hda_nid_t nid)
689 {
690 	struct hda_cvt_setup *p;
691 	int i;
692 
693 	snd_array_for_each(&codec->cvt_setups, i, p) {
694 		if (p->nid == nid)
695 			return p;
696 	}
697 	p = snd_array_new(&codec->cvt_setups);
698 	if (p)
699 		p->nid = nid;
700 	return p;
701 }
702 
703 /*
704  * PCM device
705  */
snd_hda_codec_pcm_put(struct hda_pcm * pcm)706 void snd_hda_codec_pcm_put(struct hda_pcm *pcm)
707 {
708 	if (refcount_dec_and_test(&pcm->codec->pcm_ref))
709 		wake_up(&pcm->codec->remove_sleep);
710 }
711 EXPORT_SYMBOL_GPL(snd_hda_codec_pcm_put);
712 
snd_hda_codec_pcm_new(struct hda_codec * codec,const char * fmt,...)713 struct hda_pcm *snd_hda_codec_pcm_new(struct hda_codec *codec,
714 				      const char *fmt, ...)
715 {
716 	struct hda_pcm *pcm;
717 	va_list args;
718 
719 	pcm = kzalloc(sizeof(*pcm), GFP_KERNEL);
720 	if (!pcm)
721 		return NULL;
722 
723 	pcm->codec = codec;
724 	va_start(args, fmt);
725 	pcm->name = kvasprintf(GFP_KERNEL, fmt, args);
726 	va_end(args);
727 	if (!pcm->name) {
728 		kfree(pcm);
729 		return NULL;
730 	}
731 
732 	list_add_tail(&pcm->list, &codec->pcm_list_head);
733 	refcount_inc(&codec->pcm_ref);
734 	return pcm;
735 }
736 EXPORT_SYMBOL_GPL(snd_hda_codec_pcm_new);
737 
738 /*
739  * codec destructor
740  */
snd_hda_codec_disconnect_pcms(struct hda_codec * codec)741 void snd_hda_codec_disconnect_pcms(struct hda_codec *codec)
742 {
743 	struct hda_pcm *pcm;
744 
745 	list_for_each_entry(pcm, &codec->pcm_list_head, list) {
746 		if (pcm->disconnected)
747 			continue;
748 		if (pcm->pcm)
749 			snd_device_disconnect(codec->card, pcm->pcm);
750 		snd_hda_codec_pcm_put(pcm);
751 		pcm->disconnected = 1;
752 	}
753 }
754 
codec_release_pcms(struct hda_codec * codec)755 static void codec_release_pcms(struct hda_codec *codec)
756 {
757 	struct hda_pcm *pcm, *n;
758 
759 	list_for_each_entry_safe(pcm, n, &codec->pcm_list_head, list) {
760 		list_del(&pcm->list);
761 		if (pcm->pcm)
762 			snd_device_free(pcm->codec->card, pcm->pcm);
763 		clear_bit(pcm->device, pcm->codec->bus->pcm_dev_bits);
764 		kfree(pcm->name);
765 		kfree(pcm);
766 	}
767 }
768 
769 /**
770  * snd_hda_codec_cleanup_for_unbind - Prepare codec for removal
771  * @codec: codec device to cleanup
772  */
snd_hda_codec_cleanup_for_unbind(struct hda_codec * codec)773 void snd_hda_codec_cleanup_for_unbind(struct hda_codec *codec)
774 {
775 	if (codec->core.registered) {
776 		/* pm_runtime_put() is called in snd_hdac_device_exit() */
777 		pm_runtime_get_noresume(hda_codec_dev(codec));
778 		pm_runtime_disable(hda_codec_dev(codec));
779 		codec->core.registered = 0;
780 	}
781 
782 	snd_hda_codec_disconnect_pcms(codec);
783 	cancel_delayed_work_sync(&codec->jackpoll_work);
784 	if (!codec->in_freeing)
785 		snd_hda_ctls_clear(codec);
786 	codec_release_pcms(codec);
787 	snd_hda_detach_beep_device(codec);
788 	memset(&codec->patch_ops, 0, sizeof(codec->patch_ops));
789 	snd_hda_jack_tbl_clear(codec);
790 	codec->proc_widget_hook = NULL;
791 	codec->spec = NULL;
792 
793 	/* free only driver_pins so that init_pins + user_pins are restored */
794 	snd_array_free(&codec->driver_pins);
795 	snd_array_free(&codec->cvt_setups);
796 	snd_array_free(&codec->spdif_out);
797 	snd_array_free(&codec->verbs);
798 	codec->follower_dig_outs = NULL;
799 	codec->spdif_status_reset = 0;
800 	snd_array_free(&codec->mixers);
801 	snd_array_free(&codec->nids);
802 	remove_conn_list(codec);
803 	snd_hdac_regmap_exit(&codec->core);
804 	codec->configured = 0;
805 	refcount_set(&codec->pcm_ref, 1); /* reset refcount */
806 }
807 EXPORT_SYMBOL_GPL(snd_hda_codec_cleanup_for_unbind);
808 
809 static unsigned int hda_set_power_state(struct hda_codec *codec,
810 				unsigned int power_state);
811 
812 /* enable/disable display power per codec */
snd_hda_codec_display_power(struct hda_codec * codec,bool enable)813 void snd_hda_codec_display_power(struct hda_codec *codec, bool enable)
814 {
815 	if (codec->display_power_control)
816 		snd_hdac_display_power(&codec->bus->core, codec->addr, enable);
817 }
818 
819 /**
820  * snd_hda_codec_register - Finalize codec initialization
821  * @codec: codec device to register
822  *
823  * Also called from hda_bind.c
824  */
snd_hda_codec_register(struct hda_codec * codec)825 void snd_hda_codec_register(struct hda_codec *codec)
826 {
827 	if (codec->core.registered)
828 		return;
829 	if (device_is_registered(hda_codec_dev(codec))) {
830 		snd_hda_codec_display_power(codec, true);
831 		pm_runtime_enable(hda_codec_dev(codec));
832 		/* it was powered up in snd_hda_codec_new(), now all done */
833 		snd_hda_power_down(codec);
834 		codec->core.registered = 1;
835 	}
836 }
837 EXPORT_SYMBOL_GPL(snd_hda_codec_register);
838 
snd_hda_codec_dev_register(struct snd_device * device)839 static int snd_hda_codec_dev_register(struct snd_device *device)
840 {
841 	snd_hda_codec_register(device->device_data);
842 	return 0;
843 }
844 
845 /**
846  * snd_hda_codec_unregister - Unregister specified codec device
847  * @codec: codec device to unregister
848  */
snd_hda_codec_unregister(struct hda_codec * codec)849 void snd_hda_codec_unregister(struct hda_codec *codec)
850 {
851 	codec->in_freeing = 1;
852 	/*
853 	 * snd_hda_codec_device_new() is used by legacy HDA and ASoC driver.
854 	 * We can't unregister ASoC device since it will be unregistered in
855 	 * snd_hdac_ext_bus_device_remove().
856 	 */
857 	if (codec->core.type == HDA_DEV_LEGACY)
858 		snd_hdac_device_unregister(&codec->core);
859 	snd_hda_codec_display_power(codec, false);
860 
861 	/*
862 	 * In the case of ASoC HD-audio bus, the device refcount is released in
863 	 * snd_hdac_ext_bus_device_remove() explicitly.
864 	 */
865 	if (codec->core.type == HDA_DEV_LEGACY)
866 		put_device(hda_codec_dev(codec));
867 }
868 EXPORT_SYMBOL_GPL(snd_hda_codec_unregister);
869 
snd_hda_codec_dev_free(struct snd_device * device)870 static int snd_hda_codec_dev_free(struct snd_device *device)
871 {
872 	snd_hda_codec_unregister(device->device_data);
873 	return 0;
874 }
875 
snd_hda_codec_dev_release(struct device * dev)876 static void snd_hda_codec_dev_release(struct device *dev)
877 {
878 	struct hda_codec *codec = dev_to_hda_codec(dev);
879 
880 	free_init_pincfgs(codec);
881 	snd_hdac_device_exit(&codec->core);
882 	snd_hda_sysfs_clear(codec);
883 	kfree(codec->modelname);
884 	kfree(codec->wcaps);
885 	kfree(codec);
886 }
887 
888 #define DEV_NAME_LEN 31
889 
890 /**
891  * snd_hda_codec_device_init - allocate HDA codec device
892  * @bus: codec's parent bus
893  * @codec_addr: the codec address on the parent bus
894  * @fmt: format string for the device's name
895  *
896  * Returns newly allocated codec device or ERR_PTR() on failure.
897  */
898 struct hda_codec *
snd_hda_codec_device_init(struct hda_bus * bus,unsigned int codec_addr,const char * fmt,...)899 snd_hda_codec_device_init(struct hda_bus *bus, unsigned int codec_addr,
900 			  const char *fmt, ...)
901 {
902 	va_list vargs;
903 	char name[DEV_NAME_LEN];
904 	struct hda_codec *codec;
905 	int err;
906 
907 	if (snd_BUG_ON(!bus))
908 		return ERR_PTR(-EINVAL);
909 	if (snd_BUG_ON(codec_addr > HDA_MAX_CODEC_ADDRESS))
910 		return ERR_PTR(-EINVAL);
911 
912 	codec = kzalloc(sizeof(*codec), GFP_KERNEL);
913 	if (!codec)
914 		return ERR_PTR(-ENOMEM);
915 
916 	va_start(vargs, fmt);
917 	vsprintf(name, fmt, vargs);
918 	va_end(vargs);
919 
920 	err = snd_hdac_device_init(&codec->core, &bus->core, name, codec_addr);
921 	if (err < 0) {
922 		kfree(codec);
923 		return ERR_PTR(err);
924 	}
925 
926 	codec->bus = bus;
927 	codec->depop_delay = -1;
928 	codec->fixup_id = HDA_FIXUP_ID_NOT_SET;
929 	codec->core.dev.release = snd_hda_codec_dev_release;
930 	codec->core.type = HDA_DEV_LEGACY;
931 
932 	mutex_init(&codec->spdif_mutex);
933 	mutex_init(&codec->control_mutex);
934 	snd_array_init(&codec->mixers, sizeof(struct hda_nid_item), 32);
935 	snd_array_init(&codec->nids, sizeof(struct hda_nid_item), 32);
936 	snd_array_init(&codec->init_pins, sizeof(struct hda_pincfg), 16);
937 	snd_array_init(&codec->driver_pins, sizeof(struct hda_pincfg), 16);
938 	snd_array_init(&codec->cvt_setups, sizeof(struct hda_cvt_setup), 8);
939 	snd_array_init(&codec->spdif_out, sizeof(struct hda_spdif_out), 16);
940 	snd_array_init(&codec->jacktbl, sizeof(struct hda_jack_tbl), 16);
941 	snd_array_init(&codec->verbs, sizeof(struct hda_verb *), 8);
942 	INIT_LIST_HEAD(&codec->conn_list);
943 	INIT_LIST_HEAD(&codec->pcm_list_head);
944 	INIT_DELAYED_WORK(&codec->jackpoll_work, hda_jackpoll_work);
945 	refcount_set(&codec->pcm_ref, 1);
946 	init_waitqueue_head(&codec->remove_sleep);
947 
948 	return codec;
949 }
950 EXPORT_SYMBOL_GPL(snd_hda_codec_device_init);
951 
952 /**
953  * snd_hda_codec_new - create a HDA codec
954  * @bus: the bus to assign
955  * @card: card for this codec
956  * @codec_addr: the codec address
957  * @codecp: the pointer to store the generated codec
958  *
959  * Returns 0 if successful, or a negative error code.
960  */
snd_hda_codec_new(struct hda_bus * bus,struct snd_card * card,unsigned int codec_addr,struct hda_codec ** codecp)961 int snd_hda_codec_new(struct hda_bus *bus, struct snd_card *card,
962 		      unsigned int codec_addr, struct hda_codec **codecp)
963 {
964 	struct hda_codec *codec;
965 	int ret;
966 
967 	codec = snd_hda_codec_device_init(bus, codec_addr, "hdaudioC%dD%d",
968 					  card->number, codec_addr);
969 	if (IS_ERR(codec))
970 		return PTR_ERR(codec);
971 	*codecp = codec;
972 
973 	ret = snd_hda_codec_device_new(bus, card, codec_addr, *codecp, true);
974 	if (ret)
975 		put_device(hda_codec_dev(*codecp));
976 
977 	return ret;
978 }
979 EXPORT_SYMBOL_GPL(snd_hda_codec_new);
980 
snd_hda_codec_device_new(struct hda_bus * bus,struct snd_card * card,unsigned int codec_addr,struct hda_codec * codec,bool snddev_managed)981 int snd_hda_codec_device_new(struct hda_bus *bus, struct snd_card *card,
982 			unsigned int codec_addr, struct hda_codec *codec,
983 			bool snddev_managed)
984 {
985 	char component[31];
986 	hda_nid_t fg;
987 	int err;
988 	static const struct snd_device_ops dev_ops = {
989 		.dev_register = snd_hda_codec_dev_register,
990 		.dev_free = snd_hda_codec_dev_free,
991 	};
992 
993 	dev_dbg(card->dev, "%s: entry\n", __func__);
994 
995 	if (snd_BUG_ON(!bus))
996 		return -EINVAL;
997 	if (snd_BUG_ON(codec_addr > HDA_MAX_CODEC_ADDRESS))
998 		return -EINVAL;
999 
1000 	codec->core.exec_verb = codec_exec_verb;
1001 	codec->card = card;
1002 	codec->addr = codec_addr;
1003 
1004 #ifdef CONFIG_PM
1005 	codec->power_jiffies = jiffies;
1006 #endif
1007 
1008 	snd_hda_sysfs_init(codec);
1009 
1010 	if (codec->bus->modelname) {
1011 		codec->modelname = kstrdup(codec->bus->modelname, GFP_KERNEL);
1012 		if (!codec->modelname)
1013 			return -ENOMEM;
1014 	}
1015 
1016 	fg = codec->core.afg ? codec->core.afg : codec->core.mfg;
1017 	err = read_widget_caps(codec, fg);
1018 	if (err < 0)
1019 		return err;
1020 	err = read_pin_defaults(codec);
1021 	if (err < 0)
1022 		return err;
1023 
1024 	/* power-up all before initialization */
1025 	hda_set_power_state(codec, AC_PWRST_D0);
1026 	codec->core.dev.power.power_state = PMSG_ON;
1027 
1028 	snd_hda_codec_proc_new(codec);
1029 
1030 	snd_hda_create_hwdep(codec);
1031 
1032 	sprintf(component, "HDA:%08x,%08x,%08x", codec->core.vendor_id,
1033 		codec->core.subsystem_id, codec->core.revision_id);
1034 	snd_component_add(card, component);
1035 
1036 	if (snddev_managed) {
1037 		/* ASoC features component management instead */
1038 		err = snd_device_new(card, SNDRV_DEV_CODEC, codec, &dev_ops);
1039 		if (err < 0)
1040 			return err;
1041 	}
1042 
1043 #ifdef CONFIG_PM
1044 	/* PM runtime needs to be enabled later after binding codec */
1045 	if (codec->core.dev.power.runtime_auto)
1046 		pm_runtime_forbid(&codec->core.dev);
1047 	else
1048 		/* Keep the usage_count consistent across subsequent probing */
1049 		pm_runtime_get_noresume(&codec->core.dev);
1050 #endif
1051 
1052 	return 0;
1053 }
1054 EXPORT_SYMBOL_GPL(snd_hda_codec_device_new);
1055 
1056 /**
1057  * snd_hda_codec_update_widgets - Refresh widget caps and pin defaults
1058  * @codec: the HDA codec
1059  *
1060  * Forcibly refresh the all widget caps and the init pin configurations of
1061  * the given codec.
1062  */
snd_hda_codec_update_widgets(struct hda_codec * codec)1063 int snd_hda_codec_update_widgets(struct hda_codec *codec)
1064 {
1065 	hda_nid_t fg;
1066 	int err;
1067 
1068 	err = snd_hdac_refresh_widgets(&codec->core);
1069 	if (err < 0)
1070 		return err;
1071 
1072 	/* Assume the function group node does not change,
1073 	 * only the widget nodes may change.
1074 	 */
1075 	kfree(codec->wcaps);
1076 	fg = codec->core.afg ? codec->core.afg : codec->core.mfg;
1077 	err = read_widget_caps(codec, fg);
1078 	if (err < 0)
1079 		return err;
1080 
1081 	snd_array_free(&codec->init_pins);
1082 	err = read_pin_defaults(codec);
1083 
1084 	return err;
1085 }
1086 EXPORT_SYMBOL_GPL(snd_hda_codec_update_widgets);
1087 
1088 /* update the stream-id if changed */
update_pcm_stream_id(struct hda_codec * codec,struct hda_cvt_setup * p,hda_nid_t nid,u32 stream_tag,int channel_id)1089 static void update_pcm_stream_id(struct hda_codec *codec,
1090 				 struct hda_cvt_setup *p, hda_nid_t nid,
1091 				 u32 stream_tag, int channel_id)
1092 {
1093 	unsigned int oldval, newval;
1094 
1095 	if (p->stream_tag != stream_tag || p->channel_id != channel_id) {
1096 		oldval = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_CONV, 0);
1097 		newval = (stream_tag << 4) | channel_id;
1098 		if (oldval != newval)
1099 			snd_hda_codec_write(codec, nid, 0,
1100 					    AC_VERB_SET_CHANNEL_STREAMID,
1101 					    newval);
1102 		p->stream_tag = stream_tag;
1103 		p->channel_id = channel_id;
1104 	}
1105 }
1106 
1107 /* update the format-id if changed */
update_pcm_format(struct hda_codec * codec,struct hda_cvt_setup * p,hda_nid_t nid,int format)1108 static void update_pcm_format(struct hda_codec *codec, struct hda_cvt_setup *p,
1109 			      hda_nid_t nid, int format)
1110 {
1111 	unsigned int oldval;
1112 
1113 	if (p->format_id != format) {
1114 		oldval = snd_hda_codec_read(codec, nid, 0,
1115 					    AC_VERB_GET_STREAM_FORMAT, 0);
1116 		if (oldval != format) {
1117 			msleep(1);
1118 			snd_hda_codec_write(codec, nid, 0,
1119 					    AC_VERB_SET_STREAM_FORMAT,
1120 					    format);
1121 		}
1122 		p->format_id = format;
1123 	}
1124 }
1125 
1126 /**
1127  * snd_hda_codec_setup_stream - set up the codec for streaming
1128  * @codec: the CODEC to set up
1129  * @nid: the NID to set up
1130  * @stream_tag: stream tag to pass, it's between 0x1 and 0xf.
1131  * @channel_id: channel id to pass, zero based.
1132  * @format: stream format.
1133  */
snd_hda_codec_setup_stream(struct hda_codec * codec,hda_nid_t nid,u32 stream_tag,int channel_id,int format)1134 void snd_hda_codec_setup_stream(struct hda_codec *codec, hda_nid_t nid,
1135 				u32 stream_tag,
1136 				int channel_id, int format)
1137 {
1138 	struct hda_codec *c;
1139 	struct hda_cvt_setup *p;
1140 	int type;
1141 	int i;
1142 
1143 	if (!nid)
1144 		return;
1145 
1146 	codec_dbg(codec,
1147 		  "hda_codec_setup_stream: NID=0x%x, stream=0x%x, channel=%d, format=0x%x\n",
1148 		  nid, stream_tag, channel_id, format);
1149 	p = get_hda_cvt_setup(codec, nid);
1150 	if (!p)
1151 		return;
1152 
1153 	if (codec->patch_ops.stream_pm)
1154 		codec->patch_ops.stream_pm(codec, nid, true);
1155 	if (codec->pcm_format_first)
1156 		update_pcm_format(codec, p, nid, format);
1157 	update_pcm_stream_id(codec, p, nid, stream_tag, channel_id);
1158 	if (!codec->pcm_format_first)
1159 		update_pcm_format(codec, p, nid, format);
1160 
1161 	p->active = 1;
1162 	p->dirty = 0;
1163 
1164 	/* make other inactive cvts with the same stream-tag dirty */
1165 	type = get_wcaps_type(get_wcaps(codec, nid));
1166 	list_for_each_codec(c, codec->bus) {
1167 		snd_array_for_each(&c->cvt_setups, i, p) {
1168 			if (!p->active && p->stream_tag == stream_tag &&
1169 			    get_wcaps_type(get_wcaps(c, p->nid)) == type)
1170 				p->dirty = 1;
1171 		}
1172 	}
1173 }
1174 EXPORT_SYMBOL_GPL(snd_hda_codec_setup_stream);
1175 
1176 static void really_cleanup_stream(struct hda_codec *codec,
1177 				  struct hda_cvt_setup *q);
1178 
1179 /**
1180  * __snd_hda_codec_cleanup_stream - clean up the codec for closing
1181  * @codec: the CODEC to clean up
1182  * @nid: the NID to clean up
1183  * @do_now: really clean up the stream instead of clearing the active flag
1184  */
__snd_hda_codec_cleanup_stream(struct hda_codec * codec,hda_nid_t nid,int do_now)1185 void __snd_hda_codec_cleanup_stream(struct hda_codec *codec, hda_nid_t nid,
1186 				    int do_now)
1187 {
1188 	struct hda_cvt_setup *p;
1189 
1190 	if (!nid)
1191 		return;
1192 
1193 	if (codec->no_sticky_stream)
1194 		do_now = 1;
1195 
1196 	codec_dbg(codec, "hda_codec_cleanup_stream: NID=0x%x\n", nid);
1197 	p = get_hda_cvt_setup(codec, nid);
1198 	if (p) {
1199 		/* here we just clear the active flag when do_now isn't set;
1200 		 * actual clean-ups will be done later in
1201 		 * purify_inactive_streams() called from snd_hda_codec_prpapre()
1202 		 */
1203 		if (do_now)
1204 			really_cleanup_stream(codec, p);
1205 		else
1206 			p->active = 0;
1207 	}
1208 }
1209 EXPORT_SYMBOL_GPL(__snd_hda_codec_cleanup_stream);
1210 
really_cleanup_stream(struct hda_codec * codec,struct hda_cvt_setup * q)1211 static void really_cleanup_stream(struct hda_codec *codec,
1212 				  struct hda_cvt_setup *q)
1213 {
1214 	hda_nid_t nid = q->nid;
1215 	if (q->stream_tag || q->channel_id)
1216 		snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_CHANNEL_STREAMID, 0);
1217 	if (q->format_id)
1218 		snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_STREAM_FORMAT, 0
1219 );
1220 	memset(q, 0, sizeof(*q));
1221 	q->nid = nid;
1222 	if (codec->patch_ops.stream_pm)
1223 		codec->patch_ops.stream_pm(codec, nid, false);
1224 }
1225 
1226 /* clean up the all conflicting obsolete streams */
purify_inactive_streams(struct hda_codec * codec)1227 static void purify_inactive_streams(struct hda_codec *codec)
1228 {
1229 	struct hda_codec *c;
1230 	struct hda_cvt_setup *p;
1231 	int i;
1232 
1233 	list_for_each_codec(c, codec->bus) {
1234 		snd_array_for_each(&c->cvt_setups, i, p) {
1235 			if (p->dirty)
1236 				really_cleanup_stream(c, p);
1237 		}
1238 	}
1239 }
1240 
1241 #ifdef CONFIG_PM
1242 /* clean up all streams; called from suspend */
hda_cleanup_all_streams(struct hda_codec * codec)1243 static void hda_cleanup_all_streams(struct hda_codec *codec)
1244 {
1245 	struct hda_cvt_setup *p;
1246 	int i;
1247 
1248 	snd_array_for_each(&codec->cvt_setups, i, p) {
1249 		if (p->stream_tag)
1250 			really_cleanup_stream(codec, p);
1251 	}
1252 }
1253 #endif
1254 
1255 /*
1256  * amp access functions
1257  */
1258 
1259 /**
1260  * query_amp_caps - query AMP capabilities
1261  * @codec: the HD-auio codec
1262  * @nid: the NID to query
1263  * @direction: either #HDA_INPUT or #HDA_OUTPUT
1264  *
1265  * Query AMP capabilities for the given widget and direction.
1266  * Returns the obtained capability bits.
1267  *
1268  * When cap bits have been already read, this doesn't read again but
1269  * returns the cached value.
1270  */
query_amp_caps(struct hda_codec * codec,hda_nid_t nid,int direction)1271 u32 query_amp_caps(struct hda_codec *codec, hda_nid_t nid, int direction)
1272 {
1273 	if (!(get_wcaps(codec, nid) & AC_WCAP_AMP_OVRD))
1274 		nid = codec->core.afg;
1275 	return snd_hda_param_read(codec, nid,
1276 				  direction == HDA_OUTPUT ?
1277 				  AC_PAR_AMP_OUT_CAP : AC_PAR_AMP_IN_CAP);
1278 }
1279 EXPORT_SYMBOL_GPL(query_amp_caps);
1280 
1281 /**
1282  * snd_hda_check_amp_caps - query AMP capabilities
1283  * @codec: the HD-audio codec
1284  * @nid: the NID to query
1285  * @dir: either #HDA_INPUT or #HDA_OUTPUT
1286  * @bits: bit mask to check the result
1287  *
1288  * Check whether the widget has the given amp capability for the direction.
1289  */
snd_hda_check_amp_caps(struct hda_codec * codec,hda_nid_t nid,int dir,unsigned int bits)1290 bool snd_hda_check_amp_caps(struct hda_codec *codec, hda_nid_t nid,
1291 			   int dir, unsigned int bits)
1292 {
1293 	if (!nid)
1294 		return false;
1295 	if (get_wcaps(codec, nid) & (1 << (dir + 1)))
1296 		if (query_amp_caps(codec, nid, dir) & bits)
1297 			return true;
1298 	return false;
1299 }
1300 EXPORT_SYMBOL_GPL(snd_hda_check_amp_caps);
1301 
1302 /**
1303  * snd_hda_override_amp_caps - Override the AMP capabilities
1304  * @codec: the CODEC to clean up
1305  * @nid: the NID to clean up
1306  * @dir: either #HDA_INPUT or #HDA_OUTPUT
1307  * @caps: the capability bits to set
1308  *
1309  * Override the cached AMP caps bits value by the given one.
1310  * This function is useful if the driver needs to adjust the AMP ranges,
1311  * e.g. limit to 0dB, etc.
1312  *
1313  * Returns zero if successful or a negative error code.
1314  */
snd_hda_override_amp_caps(struct hda_codec * codec,hda_nid_t nid,int dir,unsigned int caps)1315 int snd_hda_override_amp_caps(struct hda_codec *codec, hda_nid_t nid, int dir,
1316 			      unsigned int caps)
1317 {
1318 	unsigned int parm;
1319 
1320 	snd_hda_override_wcaps(codec, nid,
1321 			       get_wcaps(codec, nid) | AC_WCAP_AMP_OVRD);
1322 	parm = dir == HDA_OUTPUT ? AC_PAR_AMP_OUT_CAP : AC_PAR_AMP_IN_CAP;
1323 	return snd_hdac_override_parm(&codec->core, nid, parm, caps);
1324 }
1325 EXPORT_SYMBOL_GPL(snd_hda_override_amp_caps);
1326 
encode_amp(struct hda_codec * codec,hda_nid_t nid,int ch,int dir,int idx)1327 static unsigned int encode_amp(struct hda_codec *codec, hda_nid_t nid,
1328 			       int ch, int dir, int idx)
1329 {
1330 	unsigned int cmd = snd_hdac_regmap_encode_amp(nid, ch, dir, idx);
1331 
1332 	/* enable fake mute if no h/w mute but min=mute */
1333 	if ((query_amp_caps(codec, nid, dir) &
1334 	     (AC_AMPCAP_MUTE | AC_AMPCAP_MIN_MUTE)) == AC_AMPCAP_MIN_MUTE)
1335 		cmd |= AC_AMP_FAKE_MUTE;
1336 	return cmd;
1337 }
1338 
1339 /**
1340  * snd_hda_codec_amp_update - update the AMP mono value
1341  * @codec: HD-audio codec
1342  * @nid: NID to read the AMP value
1343  * @ch: channel to update (0 or 1)
1344  * @dir: #HDA_INPUT or #HDA_OUTPUT
1345  * @idx: the index value (only for input direction)
1346  * @mask: bit mask to set
1347  * @val: the bits value to set
1348  *
1349  * Update the AMP values for the given channel, direction and index.
1350  */
snd_hda_codec_amp_update(struct hda_codec * codec,hda_nid_t nid,int ch,int dir,int idx,int mask,int val)1351 int snd_hda_codec_amp_update(struct hda_codec *codec, hda_nid_t nid,
1352 			     int ch, int dir, int idx, int mask, int val)
1353 {
1354 	unsigned int cmd = encode_amp(codec, nid, ch, dir, idx);
1355 
1356 	return snd_hdac_regmap_update_raw(&codec->core, cmd, mask, val);
1357 }
1358 EXPORT_SYMBOL_GPL(snd_hda_codec_amp_update);
1359 
1360 /**
1361  * snd_hda_codec_amp_stereo - update the AMP stereo values
1362  * @codec: HD-audio codec
1363  * @nid: NID to read the AMP value
1364  * @direction: #HDA_INPUT or #HDA_OUTPUT
1365  * @idx: the index value (only for input direction)
1366  * @mask: bit mask to set
1367  * @val: the bits value to set
1368  *
1369  * Update the AMP values like snd_hda_codec_amp_update(), but for a
1370  * stereo widget with the same mask and value.
1371  */
snd_hda_codec_amp_stereo(struct hda_codec * codec,hda_nid_t nid,int direction,int idx,int mask,int val)1372 int snd_hda_codec_amp_stereo(struct hda_codec *codec, hda_nid_t nid,
1373 			     int direction, int idx, int mask, int val)
1374 {
1375 	int ch, ret = 0;
1376 
1377 	if (snd_BUG_ON(mask & ~0xff))
1378 		mask &= 0xff;
1379 	for (ch = 0; ch < 2; ch++)
1380 		ret |= snd_hda_codec_amp_update(codec, nid, ch, direction,
1381 						idx, mask, val);
1382 	return ret;
1383 }
1384 EXPORT_SYMBOL_GPL(snd_hda_codec_amp_stereo);
1385 
1386 /**
1387  * snd_hda_codec_amp_init - initialize the AMP value
1388  * @codec: the HDA codec
1389  * @nid: NID to read the AMP value
1390  * @ch: channel (left=0 or right=1)
1391  * @dir: #HDA_INPUT or #HDA_OUTPUT
1392  * @idx: the index value (only for input direction)
1393  * @mask: bit mask to set
1394  * @val: the bits value to set
1395  *
1396  * Works like snd_hda_codec_amp_update() but it writes the value only at
1397  * the first access.  If the amp was already initialized / updated beforehand,
1398  * this does nothing.
1399  */
snd_hda_codec_amp_init(struct hda_codec * codec,hda_nid_t nid,int ch,int dir,int idx,int mask,int val)1400 int snd_hda_codec_amp_init(struct hda_codec *codec, hda_nid_t nid, int ch,
1401 			   int dir, int idx, int mask, int val)
1402 {
1403 	unsigned int cmd = encode_amp(codec, nid, ch, dir, idx);
1404 
1405 	if (!codec->core.regmap)
1406 		return -EINVAL;
1407 	return snd_hdac_regmap_update_raw_once(&codec->core, cmd, mask, val);
1408 }
1409 EXPORT_SYMBOL_GPL(snd_hda_codec_amp_init);
1410 
1411 /**
1412  * snd_hda_codec_amp_init_stereo - initialize the stereo AMP value
1413  * @codec: the HDA codec
1414  * @nid: NID to read the AMP value
1415  * @dir: #HDA_INPUT or #HDA_OUTPUT
1416  * @idx: the index value (only for input direction)
1417  * @mask: bit mask to set
1418  * @val: the bits value to set
1419  *
1420  * Call snd_hda_codec_amp_init() for both stereo channels.
1421  */
snd_hda_codec_amp_init_stereo(struct hda_codec * codec,hda_nid_t nid,int dir,int idx,int mask,int val)1422 int snd_hda_codec_amp_init_stereo(struct hda_codec *codec, hda_nid_t nid,
1423 				  int dir, int idx, int mask, int val)
1424 {
1425 	int ch, ret = 0;
1426 
1427 	if (snd_BUG_ON(mask & ~0xff))
1428 		mask &= 0xff;
1429 	for (ch = 0; ch < 2; ch++)
1430 		ret |= snd_hda_codec_amp_init(codec, nid, ch, dir,
1431 					      idx, mask, val);
1432 	return ret;
1433 }
1434 EXPORT_SYMBOL_GPL(snd_hda_codec_amp_init_stereo);
1435 
get_amp_max_value(struct hda_codec * codec,hda_nid_t nid,int dir,unsigned int ofs)1436 static u32 get_amp_max_value(struct hda_codec *codec, hda_nid_t nid, int dir,
1437 			     unsigned int ofs)
1438 {
1439 	u32 caps = query_amp_caps(codec, nid, dir);
1440 	/* get num steps */
1441 	caps = (caps & AC_AMPCAP_NUM_STEPS) >> AC_AMPCAP_NUM_STEPS_SHIFT;
1442 	if (ofs < caps)
1443 		caps -= ofs;
1444 	return caps;
1445 }
1446 
1447 /**
1448  * snd_hda_mixer_amp_volume_info - Info callback for a standard AMP mixer
1449  * @kcontrol: referred ctl element
1450  * @uinfo: pointer to get/store the data
1451  *
1452  * The control element is supposed to have the private_value field
1453  * set up via HDA_COMPOSE_AMP_VAL*() or related macros.
1454  */
snd_hda_mixer_amp_volume_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)1455 int snd_hda_mixer_amp_volume_info(struct snd_kcontrol *kcontrol,
1456 				  struct snd_ctl_elem_info *uinfo)
1457 {
1458 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
1459 	u16 nid = get_amp_nid(kcontrol);
1460 	u8 chs = get_amp_channels(kcontrol);
1461 	int dir = get_amp_direction(kcontrol);
1462 	unsigned int ofs = get_amp_offset(kcontrol);
1463 
1464 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1465 	uinfo->count = chs == 3 ? 2 : 1;
1466 	uinfo->value.integer.min = 0;
1467 	uinfo->value.integer.max = get_amp_max_value(codec, nid, dir, ofs);
1468 	if (!uinfo->value.integer.max) {
1469 		codec_warn(codec,
1470 			   "num_steps = 0 for NID=0x%x (ctl = %s)\n",
1471 			   nid, kcontrol->id.name);
1472 		return -EINVAL;
1473 	}
1474 	return 0;
1475 }
1476 EXPORT_SYMBOL_GPL(snd_hda_mixer_amp_volume_info);
1477 
1478 
1479 static inline unsigned int
read_amp_value(struct hda_codec * codec,hda_nid_t nid,int ch,int dir,int idx,unsigned int ofs)1480 read_amp_value(struct hda_codec *codec, hda_nid_t nid,
1481 	       int ch, int dir, int idx, unsigned int ofs)
1482 {
1483 	unsigned int val;
1484 	val = snd_hda_codec_amp_read(codec, nid, ch, dir, idx);
1485 	val &= HDA_AMP_VOLMASK;
1486 	if (val >= ofs)
1487 		val -= ofs;
1488 	else
1489 		val = 0;
1490 	return val;
1491 }
1492 
1493 static inline int
update_amp_value(struct hda_codec * codec,hda_nid_t nid,int ch,int dir,int idx,unsigned int ofs,unsigned int val)1494 update_amp_value(struct hda_codec *codec, hda_nid_t nid,
1495 		 int ch, int dir, int idx, unsigned int ofs,
1496 		 unsigned int val)
1497 {
1498 	unsigned int maxval;
1499 
1500 	if (val > 0)
1501 		val += ofs;
1502 	/* ofs = 0: raw max value */
1503 	maxval = get_amp_max_value(codec, nid, dir, 0);
1504 	if (val > maxval)
1505 		val = maxval;
1506 	return snd_hda_codec_amp_update(codec, nid, ch, dir, idx,
1507 					HDA_AMP_VOLMASK, val);
1508 }
1509 
1510 /**
1511  * snd_hda_mixer_amp_volume_get - Get callback for a standard AMP mixer volume
1512  * @kcontrol: ctl element
1513  * @ucontrol: pointer to get/store the data
1514  *
1515  * The control element is supposed to have the private_value field
1516  * set up via HDA_COMPOSE_AMP_VAL*() or related macros.
1517  */
snd_hda_mixer_amp_volume_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1518 int snd_hda_mixer_amp_volume_get(struct snd_kcontrol *kcontrol,
1519 				 struct snd_ctl_elem_value *ucontrol)
1520 {
1521 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
1522 	hda_nid_t nid = get_amp_nid(kcontrol);
1523 	int chs = get_amp_channels(kcontrol);
1524 	int dir = get_amp_direction(kcontrol);
1525 	int idx = get_amp_index(kcontrol);
1526 	unsigned int ofs = get_amp_offset(kcontrol);
1527 	long *valp = ucontrol->value.integer.value;
1528 
1529 	if (chs & 1)
1530 		*valp++ = read_amp_value(codec, nid, 0, dir, idx, ofs);
1531 	if (chs & 2)
1532 		*valp = read_amp_value(codec, nid, 1, dir, idx, ofs);
1533 	return 0;
1534 }
1535 EXPORT_SYMBOL_GPL(snd_hda_mixer_amp_volume_get);
1536 
1537 /**
1538  * snd_hda_mixer_amp_volume_put - Put callback for a standard AMP mixer volume
1539  * @kcontrol: ctl element
1540  * @ucontrol: pointer to get/store the data
1541  *
1542  * The control element is supposed to have the private_value field
1543  * set up via HDA_COMPOSE_AMP_VAL*() or related macros.
1544  */
snd_hda_mixer_amp_volume_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1545 int snd_hda_mixer_amp_volume_put(struct snd_kcontrol *kcontrol,
1546 				 struct snd_ctl_elem_value *ucontrol)
1547 {
1548 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
1549 	hda_nid_t nid = get_amp_nid(kcontrol);
1550 	int chs = get_amp_channels(kcontrol);
1551 	int dir = get_amp_direction(kcontrol);
1552 	int idx = get_amp_index(kcontrol);
1553 	unsigned int ofs = get_amp_offset(kcontrol);
1554 	long *valp = ucontrol->value.integer.value;
1555 	int change = 0;
1556 
1557 	if (chs & 1) {
1558 		change = update_amp_value(codec, nid, 0, dir, idx, ofs, *valp);
1559 		valp++;
1560 	}
1561 	if (chs & 2)
1562 		change |= update_amp_value(codec, nid, 1, dir, idx, ofs, *valp);
1563 	return change;
1564 }
1565 EXPORT_SYMBOL_GPL(snd_hda_mixer_amp_volume_put);
1566 
1567 /* inquiry the amp caps and convert to TLV */
get_ctl_amp_tlv(struct snd_kcontrol * kcontrol,unsigned int * tlv)1568 static void get_ctl_amp_tlv(struct snd_kcontrol *kcontrol, unsigned int *tlv)
1569 {
1570 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
1571 	hda_nid_t nid = get_amp_nid(kcontrol);
1572 	int dir = get_amp_direction(kcontrol);
1573 	unsigned int ofs = get_amp_offset(kcontrol);
1574 	bool min_mute = get_amp_min_mute(kcontrol);
1575 	u32 caps, val1, val2;
1576 
1577 	caps = query_amp_caps(codec, nid, dir);
1578 	val2 = (caps & AC_AMPCAP_STEP_SIZE) >> AC_AMPCAP_STEP_SIZE_SHIFT;
1579 	val2 = (val2 + 1) * 25;
1580 	val1 = -((caps & AC_AMPCAP_OFFSET) >> AC_AMPCAP_OFFSET_SHIFT);
1581 	val1 += ofs;
1582 	val1 = ((int)val1) * ((int)val2);
1583 	if (min_mute || (caps & AC_AMPCAP_MIN_MUTE))
1584 		val2 |= TLV_DB_SCALE_MUTE;
1585 	tlv[SNDRV_CTL_TLVO_TYPE] = SNDRV_CTL_TLVT_DB_SCALE;
1586 	tlv[SNDRV_CTL_TLVO_LEN] = 2 * sizeof(unsigned int);
1587 	tlv[SNDRV_CTL_TLVO_DB_SCALE_MIN] = val1;
1588 	tlv[SNDRV_CTL_TLVO_DB_SCALE_MUTE_AND_STEP] = val2;
1589 }
1590 
1591 /**
1592  * snd_hda_mixer_amp_tlv - TLV callback for a standard AMP mixer volume
1593  * @kcontrol: ctl element
1594  * @op_flag: operation flag
1595  * @size: byte size of input TLV
1596  * @_tlv: TLV data
1597  *
1598  * The control element is supposed to have the private_value field
1599  * set up via HDA_COMPOSE_AMP_VAL*() or related macros.
1600  */
snd_hda_mixer_amp_tlv(struct snd_kcontrol * kcontrol,int op_flag,unsigned int size,unsigned int __user * _tlv)1601 int snd_hda_mixer_amp_tlv(struct snd_kcontrol *kcontrol, int op_flag,
1602 			  unsigned int size, unsigned int __user *_tlv)
1603 {
1604 	unsigned int tlv[4];
1605 
1606 	if (size < 4 * sizeof(unsigned int))
1607 		return -ENOMEM;
1608 	get_ctl_amp_tlv(kcontrol, tlv);
1609 	if (copy_to_user(_tlv, tlv, sizeof(tlv)))
1610 		return -EFAULT;
1611 	return 0;
1612 }
1613 EXPORT_SYMBOL_GPL(snd_hda_mixer_amp_tlv);
1614 
1615 /**
1616  * snd_hda_set_vmaster_tlv - Set TLV for a virtual master control
1617  * @codec: HD-audio codec
1618  * @nid: NID of a reference widget
1619  * @dir: #HDA_INPUT or #HDA_OUTPUT
1620  * @tlv: TLV data to be stored, at least 4 elements
1621  *
1622  * Set (static) TLV data for a virtual master volume using the AMP caps
1623  * obtained from the reference NID.
1624  * The volume range is recalculated as if the max volume is 0dB.
1625  */
snd_hda_set_vmaster_tlv(struct hda_codec * codec,hda_nid_t nid,int dir,unsigned int * tlv)1626 void snd_hda_set_vmaster_tlv(struct hda_codec *codec, hda_nid_t nid, int dir,
1627 			     unsigned int *tlv)
1628 {
1629 	u32 caps;
1630 	int nums, step;
1631 
1632 	caps = query_amp_caps(codec, nid, dir);
1633 	nums = (caps & AC_AMPCAP_NUM_STEPS) >> AC_AMPCAP_NUM_STEPS_SHIFT;
1634 	step = (caps & AC_AMPCAP_STEP_SIZE) >> AC_AMPCAP_STEP_SIZE_SHIFT;
1635 	step = (step + 1) * 25;
1636 	tlv[SNDRV_CTL_TLVO_TYPE] = SNDRV_CTL_TLVT_DB_SCALE;
1637 	tlv[SNDRV_CTL_TLVO_LEN] = 2 * sizeof(unsigned int);
1638 	tlv[SNDRV_CTL_TLVO_DB_SCALE_MIN] = -nums * step;
1639 	tlv[SNDRV_CTL_TLVO_DB_SCALE_MUTE_AND_STEP] = step;
1640 }
1641 EXPORT_SYMBOL_GPL(snd_hda_set_vmaster_tlv);
1642 
1643 /* find a mixer control element with the given name */
1644 static struct snd_kcontrol *
find_mixer_ctl(struct hda_codec * codec,const char * name,int dev,int idx)1645 find_mixer_ctl(struct hda_codec *codec, const char *name, int dev, int idx)
1646 {
1647 	struct snd_ctl_elem_id id;
1648 	memset(&id, 0, sizeof(id));
1649 	id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
1650 	id.device = dev;
1651 	id.index = idx;
1652 	if (snd_BUG_ON(strlen(name) >= sizeof(id.name)))
1653 		return NULL;
1654 	strcpy(id.name, name);
1655 	return snd_ctl_find_id(codec->card, &id);
1656 }
1657 
1658 /**
1659  * snd_hda_find_mixer_ctl - Find a mixer control element with the given name
1660  * @codec: HD-audio codec
1661  * @name: ctl id name string
1662  *
1663  * Get the control element with the given id string and IFACE_MIXER.
1664  */
snd_hda_find_mixer_ctl(struct hda_codec * codec,const char * name)1665 struct snd_kcontrol *snd_hda_find_mixer_ctl(struct hda_codec *codec,
1666 					    const char *name)
1667 {
1668 	return find_mixer_ctl(codec, name, 0, 0);
1669 }
1670 EXPORT_SYMBOL_GPL(snd_hda_find_mixer_ctl);
1671 
find_empty_mixer_ctl_idx(struct hda_codec * codec,const char * name,int start_idx)1672 static int find_empty_mixer_ctl_idx(struct hda_codec *codec, const char *name,
1673 				    int start_idx)
1674 {
1675 	int i, idx;
1676 	/* 16 ctlrs should be large enough */
1677 	for (i = 0, idx = start_idx; i < 16; i++, idx++) {
1678 		if (!find_mixer_ctl(codec, name, 0, idx))
1679 			return idx;
1680 	}
1681 	return -EBUSY;
1682 }
1683 
1684 /**
1685  * snd_hda_ctl_add - Add a control element and assign to the codec
1686  * @codec: HD-audio codec
1687  * @nid: corresponding NID (optional)
1688  * @kctl: the control element to assign
1689  *
1690  * Add the given control element to an array inside the codec instance.
1691  * All control elements belonging to a codec are supposed to be added
1692  * by this function so that a proper clean-up works at the free or
1693  * reconfiguration time.
1694  *
1695  * If non-zero @nid is passed, the NID is assigned to the control element.
1696  * The assignment is shown in the codec proc file.
1697  *
1698  * snd_hda_ctl_add() checks the control subdev id field whether
1699  * #HDA_SUBDEV_NID_FLAG bit is set.  If set (and @nid is zero), the lower
1700  * bits value is taken as the NID to assign. The #HDA_NID_ITEM_AMP bit
1701  * specifies if kctl->private_value is a HDA amplifier value.
1702  */
snd_hda_ctl_add(struct hda_codec * codec,hda_nid_t nid,struct snd_kcontrol * kctl)1703 int snd_hda_ctl_add(struct hda_codec *codec, hda_nid_t nid,
1704 		    struct snd_kcontrol *kctl)
1705 {
1706 	int err;
1707 	unsigned short flags = 0;
1708 	struct hda_nid_item *item;
1709 
1710 	if (kctl->id.subdevice & HDA_SUBDEV_AMP_FLAG) {
1711 		flags |= HDA_NID_ITEM_AMP;
1712 		if (nid == 0)
1713 			nid = get_amp_nid_(kctl->private_value);
1714 	}
1715 	if ((kctl->id.subdevice & HDA_SUBDEV_NID_FLAG) != 0 && nid == 0)
1716 		nid = kctl->id.subdevice & 0xffff;
1717 	if (kctl->id.subdevice & (HDA_SUBDEV_NID_FLAG|HDA_SUBDEV_AMP_FLAG))
1718 		kctl->id.subdevice = 0;
1719 	err = snd_ctl_add(codec->card, kctl);
1720 	if (err < 0)
1721 		return err;
1722 	item = snd_array_new(&codec->mixers);
1723 	if (!item)
1724 		return -ENOMEM;
1725 	item->kctl = kctl;
1726 	item->nid = nid;
1727 	item->flags = flags;
1728 	return 0;
1729 }
1730 EXPORT_SYMBOL_GPL(snd_hda_ctl_add);
1731 
1732 /**
1733  * snd_hda_add_nid - Assign a NID to a control element
1734  * @codec: HD-audio codec
1735  * @nid: corresponding NID (optional)
1736  * @kctl: the control element to assign
1737  * @index: index to kctl
1738  *
1739  * Add the given control element to an array inside the codec instance.
1740  * This function is used when #snd_hda_ctl_add cannot be used for 1:1
1741  * NID:KCTL mapping - for example "Capture Source" selector.
1742  */
snd_hda_add_nid(struct hda_codec * codec,struct snd_kcontrol * kctl,unsigned int index,hda_nid_t nid)1743 int snd_hda_add_nid(struct hda_codec *codec, struct snd_kcontrol *kctl,
1744 		    unsigned int index, hda_nid_t nid)
1745 {
1746 	struct hda_nid_item *item;
1747 
1748 	if (nid > 0) {
1749 		item = snd_array_new(&codec->nids);
1750 		if (!item)
1751 			return -ENOMEM;
1752 		item->kctl = kctl;
1753 		item->index = index;
1754 		item->nid = nid;
1755 		return 0;
1756 	}
1757 	codec_err(codec, "no NID for mapping control %s:%d:%d\n",
1758 		  kctl->id.name, kctl->id.index, index);
1759 	return -EINVAL;
1760 }
1761 EXPORT_SYMBOL_GPL(snd_hda_add_nid);
1762 
1763 /**
1764  * snd_hda_ctls_clear - Clear all controls assigned to the given codec
1765  * @codec: HD-audio codec
1766  */
snd_hda_ctls_clear(struct hda_codec * codec)1767 void snd_hda_ctls_clear(struct hda_codec *codec)
1768 {
1769 	int i;
1770 	struct hda_nid_item *items = codec->mixers.list;
1771 
1772 	for (i = 0; i < codec->mixers.used; i++)
1773 		snd_ctl_remove(codec->card, items[i].kctl);
1774 	snd_array_free(&codec->mixers);
1775 	snd_array_free(&codec->nids);
1776 }
1777 
1778 /**
1779  * snd_hda_lock_devices - pseudo device locking
1780  * @bus: the BUS
1781  *
1782  * toggle card->shutdown to allow/disallow the device access (as a hack)
1783  */
snd_hda_lock_devices(struct hda_bus * bus)1784 int snd_hda_lock_devices(struct hda_bus *bus)
1785 {
1786 	struct snd_card *card = bus->card;
1787 	struct hda_codec *codec;
1788 
1789 	spin_lock(&card->files_lock);
1790 	if (card->shutdown)
1791 		goto err_unlock;
1792 	card->shutdown = 1;
1793 	if (!list_empty(&card->ctl_files))
1794 		goto err_clear;
1795 
1796 	list_for_each_codec(codec, bus) {
1797 		struct hda_pcm *cpcm;
1798 		list_for_each_entry(cpcm, &codec->pcm_list_head, list) {
1799 			if (!cpcm->pcm)
1800 				continue;
1801 			if (cpcm->pcm->streams[0].substream_opened ||
1802 			    cpcm->pcm->streams[1].substream_opened)
1803 				goto err_clear;
1804 		}
1805 	}
1806 	spin_unlock(&card->files_lock);
1807 	return 0;
1808 
1809  err_clear:
1810 	card->shutdown = 0;
1811  err_unlock:
1812 	spin_unlock(&card->files_lock);
1813 	return -EINVAL;
1814 }
1815 EXPORT_SYMBOL_GPL(snd_hda_lock_devices);
1816 
1817 /**
1818  * snd_hda_unlock_devices - pseudo device unlocking
1819  * @bus: the BUS
1820  */
snd_hda_unlock_devices(struct hda_bus * bus)1821 void snd_hda_unlock_devices(struct hda_bus *bus)
1822 {
1823 	struct snd_card *card = bus->card;
1824 
1825 	spin_lock(&card->files_lock);
1826 	card->shutdown = 0;
1827 	spin_unlock(&card->files_lock);
1828 }
1829 EXPORT_SYMBOL_GPL(snd_hda_unlock_devices);
1830 
1831 /**
1832  * snd_hda_codec_reset - Clear all objects assigned to the codec
1833  * @codec: HD-audio codec
1834  *
1835  * This frees the all PCM and control elements assigned to the codec, and
1836  * clears the caches and restores the pin default configurations.
1837  *
1838  * When a device is being used, it returns -EBSY.  If successfully freed,
1839  * returns zero.
1840  */
snd_hda_codec_reset(struct hda_codec * codec)1841 int snd_hda_codec_reset(struct hda_codec *codec)
1842 {
1843 	struct hda_bus *bus = codec->bus;
1844 
1845 	if (snd_hda_lock_devices(bus) < 0)
1846 		return -EBUSY;
1847 
1848 	/* OK, let it free */
1849 	device_release_driver(hda_codec_dev(codec));
1850 
1851 	/* allow device access again */
1852 	snd_hda_unlock_devices(bus);
1853 	return 0;
1854 }
1855 
1856 typedef int (*map_follower_func_t)(struct hda_codec *, void *, struct snd_kcontrol *);
1857 
1858 /* apply the function to all matching follower ctls in the mixer list */
map_followers(struct hda_codec * codec,const char * const * followers,const char * suffix,map_follower_func_t func,void * data)1859 static int map_followers(struct hda_codec *codec, const char * const *followers,
1860 			 const char *suffix, map_follower_func_t func, void *data)
1861 {
1862 	struct hda_nid_item *items;
1863 	const char * const *s;
1864 	int i, err;
1865 
1866 	items = codec->mixers.list;
1867 	for (i = 0; i < codec->mixers.used; i++) {
1868 		struct snd_kcontrol *sctl = items[i].kctl;
1869 		if (!sctl || sctl->id.iface != SNDRV_CTL_ELEM_IFACE_MIXER)
1870 			continue;
1871 		for (s = followers; *s; s++) {
1872 			char tmpname[sizeof(sctl->id.name)];
1873 			const char *name = *s;
1874 			if (suffix) {
1875 				snprintf(tmpname, sizeof(tmpname), "%s %s",
1876 					 name, suffix);
1877 				name = tmpname;
1878 			}
1879 			if (!strcmp(sctl->id.name, name)) {
1880 				err = func(codec, data, sctl);
1881 				if (err)
1882 					return err;
1883 				break;
1884 			}
1885 		}
1886 	}
1887 	return 0;
1888 }
1889 
check_follower_present(struct hda_codec * codec,void * data,struct snd_kcontrol * sctl)1890 static int check_follower_present(struct hda_codec *codec,
1891 				  void *data, struct snd_kcontrol *sctl)
1892 {
1893 	return 1;
1894 }
1895 
1896 /* call kctl->put with the given value(s) */
put_kctl_with_value(struct snd_kcontrol * kctl,int val)1897 static int put_kctl_with_value(struct snd_kcontrol *kctl, int val)
1898 {
1899 	struct snd_ctl_elem_value *ucontrol;
1900 	ucontrol = kzalloc(sizeof(*ucontrol), GFP_KERNEL);
1901 	if (!ucontrol)
1902 		return -ENOMEM;
1903 	ucontrol->value.integer.value[0] = val;
1904 	ucontrol->value.integer.value[1] = val;
1905 	kctl->put(kctl, ucontrol);
1906 	kfree(ucontrol);
1907 	return 0;
1908 }
1909 
1910 struct follower_init_arg {
1911 	struct hda_codec *codec;
1912 	int step;
1913 };
1914 
1915 /* initialize the follower volume with 0dB via snd_ctl_apply_vmaster_followers() */
init_follower_0dB(struct snd_kcontrol * follower,struct snd_kcontrol * kctl,void * _arg)1916 static int init_follower_0dB(struct snd_kcontrol *follower,
1917 			     struct snd_kcontrol *kctl,
1918 			     void *_arg)
1919 {
1920 	struct follower_init_arg *arg = _arg;
1921 	int _tlv[4];
1922 	const int *tlv = NULL;
1923 	int step;
1924 	int val;
1925 
1926 	if (kctl->vd[0].access & SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK) {
1927 		if (kctl->tlv.c != snd_hda_mixer_amp_tlv) {
1928 			codec_err(arg->codec,
1929 				  "Unexpected TLV callback for follower %s:%d\n",
1930 				  kctl->id.name, kctl->id.index);
1931 			return 0; /* ignore */
1932 		}
1933 		get_ctl_amp_tlv(kctl, _tlv);
1934 		tlv = _tlv;
1935 	} else if (kctl->vd[0].access & SNDRV_CTL_ELEM_ACCESS_TLV_READ)
1936 		tlv = kctl->tlv.p;
1937 
1938 	if (!tlv || tlv[SNDRV_CTL_TLVO_TYPE] != SNDRV_CTL_TLVT_DB_SCALE)
1939 		return 0;
1940 
1941 	step = tlv[SNDRV_CTL_TLVO_DB_SCALE_MUTE_AND_STEP];
1942 	step &= ~TLV_DB_SCALE_MUTE;
1943 	if (!step)
1944 		return 0;
1945 	if (arg->step && arg->step != step) {
1946 		codec_err(arg->codec,
1947 			  "Mismatching dB step for vmaster follower (%d!=%d)\n",
1948 			  arg->step, step);
1949 		return 0;
1950 	}
1951 
1952 	arg->step = step;
1953 	val = -tlv[SNDRV_CTL_TLVO_DB_SCALE_MIN] / step;
1954 	if (val > 0) {
1955 		put_kctl_with_value(follower, val);
1956 		return val;
1957 	}
1958 
1959 	return 0;
1960 }
1961 
1962 /* unmute the follower via snd_ctl_apply_vmaster_followers() */
init_follower_unmute(struct snd_kcontrol * follower,struct snd_kcontrol * kctl,void * _arg)1963 static int init_follower_unmute(struct snd_kcontrol *follower,
1964 				struct snd_kcontrol *kctl,
1965 				void *_arg)
1966 {
1967 	return put_kctl_with_value(follower, 1);
1968 }
1969 
add_follower(struct hda_codec * codec,void * data,struct snd_kcontrol * follower)1970 static int add_follower(struct hda_codec *codec,
1971 			void *data, struct snd_kcontrol *follower)
1972 {
1973 	return snd_ctl_add_follower(data, follower);
1974 }
1975 
1976 /**
1977  * __snd_hda_add_vmaster - create a virtual master control and add followers
1978  * @codec: HD-audio codec
1979  * @name: vmaster control name
1980  * @tlv: TLV data (optional)
1981  * @followers: follower control names (optional)
1982  * @suffix: suffix string to each follower name (optional)
1983  * @init_follower_vol: initialize followers to unmute/0dB
1984  * @access: kcontrol access rights
1985  * @ctl_ret: store the vmaster kcontrol in return
1986  *
1987  * Create a virtual master control with the given name.  The TLV data
1988  * must be either NULL or a valid data.
1989  *
1990  * @followers is a NULL-terminated array of strings, each of which is a
1991  * follower control name.  All controls with these names are assigned to
1992  * the new virtual master control.
1993  *
1994  * This function returns zero if successful or a negative error code.
1995  */
__snd_hda_add_vmaster(struct hda_codec * codec,char * name,unsigned int * tlv,const char * const * followers,const char * suffix,bool init_follower_vol,unsigned int access,struct snd_kcontrol ** ctl_ret)1996 int __snd_hda_add_vmaster(struct hda_codec *codec, char *name,
1997 			  unsigned int *tlv, const char * const *followers,
1998 			  const char *suffix, bool init_follower_vol,
1999 			  unsigned int access, struct snd_kcontrol **ctl_ret)
2000 {
2001 	struct snd_kcontrol *kctl;
2002 	int err;
2003 
2004 	if (ctl_ret)
2005 		*ctl_ret = NULL;
2006 
2007 	err = map_followers(codec, followers, suffix, check_follower_present, NULL);
2008 	if (err != 1) {
2009 		codec_dbg(codec, "No follower found for %s\n", name);
2010 		return 0;
2011 	}
2012 	kctl = snd_ctl_make_virtual_master(name, tlv);
2013 	if (!kctl)
2014 		return -ENOMEM;
2015 	kctl->vd[0].access |= access;
2016 	err = snd_hda_ctl_add(codec, 0, kctl);
2017 	if (err < 0)
2018 		return err;
2019 
2020 	err = map_followers(codec, followers, suffix, add_follower, kctl);
2021 	if (err < 0)
2022 		return err;
2023 
2024 	/* init with master mute & zero volume */
2025 	put_kctl_with_value(kctl, 0);
2026 	if (init_follower_vol) {
2027 		struct follower_init_arg arg = {
2028 			.codec = codec,
2029 			.step = 0,
2030 		};
2031 		snd_ctl_apply_vmaster_followers(kctl,
2032 						tlv ? init_follower_0dB : init_follower_unmute,
2033 						&arg);
2034 	}
2035 
2036 	if (ctl_ret)
2037 		*ctl_ret = kctl;
2038 	return 0;
2039 }
2040 EXPORT_SYMBOL_GPL(__snd_hda_add_vmaster);
2041 
2042 /* meta hook to call each driver's vmaster hook */
vmaster_hook(void * private_data,int enabled)2043 static void vmaster_hook(void *private_data, int enabled)
2044 {
2045 	struct hda_vmaster_mute_hook *hook = private_data;
2046 
2047 	hook->hook(hook->codec, enabled);
2048 }
2049 
2050 /**
2051  * snd_hda_add_vmaster_hook - Add a vmaster hw specific hook
2052  * @codec: the HDA codec
2053  * @hook: the vmaster hook object
2054  *
2055  * Add a hw specific hook (like EAPD) with the given vmaster switch kctl.
2056  */
snd_hda_add_vmaster_hook(struct hda_codec * codec,struct hda_vmaster_mute_hook * hook)2057 int snd_hda_add_vmaster_hook(struct hda_codec *codec,
2058 			     struct hda_vmaster_mute_hook *hook)
2059 {
2060 	if (!hook->hook || !hook->sw_kctl)
2061 		return 0;
2062 	hook->codec = codec;
2063 	snd_ctl_add_vmaster_hook(hook->sw_kctl, vmaster_hook, hook);
2064 	return 0;
2065 }
2066 EXPORT_SYMBOL_GPL(snd_hda_add_vmaster_hook);
2067 
2068 /**
2069  * snd_hda_sync_vmaster_hook - Sync vmaster hook
2070  * @hook: the vmaster hook
2071  *
2072  * Call the hook with the current value for synchronization.
2073  * Should be called in init callback.
2074  */
snd_hda_sync_vmaster_hook(struct hda_vmaster_mute_hook * hook)2075 void snd_hda_sync_vmaster_hook(struct hda_vmaster_mute_hook *hook)
2076 {
2077 	if (!hook->hook || !hook->codec)
2078 		return;
2079 	/* don't call vmaster hook in the destructor since it might have
2080 	 * been already destroyed
2081 	 */
2082 	if (hook->codec->bus->shutdown)
2083 		return;
2084 	snd_ctl_sync_vmaster_hook(hook->sw_kctl);
2085 }
2086 EXPORT_SYMBOL_GPL(snd_hda_sync_vmaster_hook);
2087 
2088 
2089 /**
2090  * snd_hda_mixer_amp_switch_info - Info callback for a standard AMP mixer switch
2091  * @kcontrol: referred ctl element
2092  * @uinfo: pointer to get/store the data
2093  *
2094  * The control element is supposed to have the private_value field
2095  * set up via HDA_COMPOSE_AMP_VAL*() or related macros.
2096  */
snd_hda_mixer_amp_switch_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)2097 int snd_hda_mixer_amp_switch_info(struct snd_kcontrol *kcontrol,
2098 				  struct snd_ctl_elem_info *uinfo)
2099 {
2100 	int chs = get_amp_channels(kcontrol);
2101 
2102 	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2103 	uinfo->count = chs == 3 ? 2 : 1;
2104 	uinfo->value.integer.min = 0;
2105 	uinfo->value.integer.max = 1;
2106 	return 0;
2107 }
2108 EXPORT_SYMBOL_GPL(snd_hda_mixer_amp_switch_info);
2109 
2110 /**
2111  * snd_hda_mixer_amp_switch_get - Get callback for a standard AMP mixer switch
2112  * @kcontrol: ctl element
2113  * @ucontrol: pointer to get/store the data
2114  *
2115  * The control element is supposed to have the private_value field
2116  * set up via HDA_COMPOSE_AMP_VAL*() or related macros.
2117  */
snd_hda_mixer_amp_switch_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)2118 int snd_hda_mixer_amp_switch_get(struct snd_kcontrol *kcontrol,
2119 				 struct snd_ctl_elem_value *ucontrol)
2120 {
2121 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
2122 	hda_nid_t nid = get_amp_nid(kcontrol);
2123 	int chs = get_amp_channels(kcontrol);
2124 	int dir = get_amp_direction(kcontrol);
2125 	int idx = get_amp_index(kcontrol);
2126 	long *valp = ucontrol->value.integer.value;
2127 
2128 	if (chs & 1)
2129 		*valp++ = (snd_hda_codec_amp_read(codec, nid, 0, dir, idx) &
2130 			   HDA_AMP_MUTE) ? 0 : 1;
2131 	if (chs & 2)
2132 		*valp = (snd_hda_codec_amp_read(codec, nid, 1, dir, idx) &
2133 			 HDA_AMP_MUTE) ? 0 : 1;
2134 	return 0;
2135 }
2136 EXPORT_SYMBOL_GPL(snd_hda_mixer_amp_switch_get);
2137 
2138 /**
2139  * snd_hda_mixer_amp_switch_put - Put callback for a standard AMP mixer switch
2140  * @kcontrol: ctl element
2141  * @ucontrol: pointer to get/store the data
2142  *
2143  * The control element is supposed to have the private_value field
2144  * set up via HDA_COMPOSE_AMP_VAL*() or related macros.
2145  */
snd_hda_mixer_amp_switch_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)2146 int snd_hda_mixer_amp_switch_put(struct snd_kcontrol *kcontrol,
2147 				 struct snd_ctl_elem_value *ucontrol)
2148 {
2149 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
2150 	hda_nid_t nid = get_amp_nid(kcontrol);
2151 	int chs = get_amp_channels(kcontrol);
2152 	int dir = get_amp_direction(kcontrol);
2153 	int idx = get_amp_index(kcontrol);
2154 	long *valp = ucontrol->value.integer.value;
2155 	int change = 0;
2156 
2157 	if (chs & 1) {
2158 		change = snd_hda_codec_amp_update(codec, nid, 0, dir, idx,
2159 						  HDA_AMP_MUTE,
2160 						  *valp ? 0 : HDA_AMP_MUTE);
2161 		valp++;
2162 	}
2163 	if (chs & 2)
2164 		change |= snd_hda_codec_amp_update(codec, nid, 1, dir, idx,
2165 						   HDA_AMP_MUTE,
2166 						   *valp ? 0 : HDA_AMP_MUTE);
2167 	hda_call_check_power_status(codec, nid);
2168 	return change;
2169 }
2170 EXPORT_SYMBOL_GPL(snd_hda_mixer_amp_switch_put);
2171 
2172 /*
2173  * SPDIF out controls
2174  */
2175 
snd_hda_spdif_mask_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)2176 static int snd_hda_spdif_mask_info(struct snd_kcontrol *kcontrol,
2177 				   struct snd_ctl_elem_info *uinfo)
2178 {
2179 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
2180 	uinfo->count = 1;
2181 	return 0;
2182 }
2183 
snd_hda_spdif_cmask_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)2184 static int snd_hda_spdif_cmask_get(struct snd_kcontrol *kcontrol,
2185 				   struct snd_ctl_elem_value *ucontrol)
2186 {
2187 	ucontrol->value.iec958.status[0] = IEC958_AES0_PROFESSIONAL |
2188 					   IEC958_AES0_NONAUDIO |
2189 					   IEC958_AES0_CON_EMPHASIS_5015 |
2190 					   IEC958_AES0_CON_NOT_COPYRIGHT;
2191 	ucontrol->value.iec958.status[1] = IEC958_AES1_CON_CATEGORY |
2192 					   IEC958_AES1_CON_ORIGINAL;
2193 	return 0;
2194 }
2195 
snd_hda_spdif_pmask_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)2196 static int snd_hda_spdif_pmask_get(struct snd_kcontrol *kcontrol,
2197 				   struct snd_ctl_elem_value *ucontrol)
2198 {
2199 	ucontrol->value.iec958.status[0] = IEC958_AES0_PROFESSIONAL |
2200 					   IEC958_AES0_NONAUDIO |
2201 					   IEC958_AES0_PRO_EMPHASIS_5015;
2202 	return 0;
2203 }
2204 
snd_hda_spdif_default_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)2205 static int snd_hda_spdif_default_get(struct snd_kcontrol *kcontrol,
2206 				     struct snd_ctl_elem_value *ucontrol)
2207 {
2208 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
2209 	int idx = kcontrol->private_value;
2210 	struct hda_spdif_out *spdif;
2211 
2212 	if (WARN_ON(codec->spdif_out.used <= idx))
2213 		return -EINVAL;
2214 	mutex_lock(&codec->spdif_mutex);
2215 	spdif = snd_array_elem(&codec->spdif_out, idx);
2216 	ucontrol->value.iec958.status[0] = spdif->status & 0xff;
2217 	ucontrol->value.iec958.status[1] = (spdif->status >> 8) & 0xff;
2218 	ucontrol->value.iec958.status[2] = (spdif->status >> 16) & 0xff;
2219 	ucontrol->value.iec958.status[3] = (spdif->status >> 24) & 0xff;
2220 	mutex_unlock(&codec->spdif_mutex);
2221 
2222 	return 0;
2223 }
2224 
2225 /* convert from SPDIF status bits to HDA SPDIF bits
2226  * bit 0 (DigEn) is always set zero (to be filled later)
2227  */
convert_from_spdif_status(unsigned int sbits)2228 static unsigned short convert_from_spdif_status(unsigned int sbits)
2229 {
2230 	unsigned short val = 0;
2231 
2232 	if (sbits & IEC958_AES0_PROFESSIONAL)
2233 		val |= AC_DIG1_PROFESSIONAL;
2234 	if (sbits & IEC958_AES0_NONAUDIO)
2235 		val |= AC_DIG1_NONAUDIO;
2236 	if (sbits & IEC958_AES0_PROFESSIONAL) {
2237 		if ((sbits & IEC958_AES0_PRO_EMPHASIS) ==
2238 		    IEC958_AES0_PRO_EMPHASIS_5015)
2239 			val |= AC_DIG1_EMPHASIS;
2240 	} else {
2241 		if ((sbits & IEC958_AES0_CON_EMPHASIS) ==
2242 		    IEC958_AES0_CON_EMPHASIS_5015)
2243 			val |= AC_DIG1_EMPHASIS;
2244 		if (!(sbits & IEC958_AES0_CON_NOT_COPYRIGHT))
2245 			val |= AC_DIG1_COPYRIGHT;
2246 		if (sbits & (IEC958_AES1_CON_ORIGINAL << 8))
2247 			val |= AC_DIG1_LEVEL;
2248 		val |= sbits & (IEC958_AES1_CON_CATEGORY << 8);
2249 	}
2250 	return val;
2251 }
2252 
2253 /* convert to SPDIF status bits from HDA SPDIF bits
2254  */
convert_to_spdif_status(unsigned short val)2255 static unsigned int convert_to_spdif_status(unsigned short val)
2256 {
2257 	unsigned int sbits = 0;
2258 
2259 	if (val & AC_DIG1_NONAUDIO)
2260 		sbits |= IEC958_AES0_NONAUDIO;
2261 	if (val & AC_DIG1_PROFESSIONAL)
2262 		sbits |= IEC958_AES0_PROFESSIONAL;
2263 	if (sbits & IEC958_AES0_PROFESSIONAL) {
2264 		if (val & AC_DIG1_EMPHASIS)
2265 			sbits |= IEC958_AES0_PRO_EMPHASIS_5015;
2266 	} else {
2267 		if (val & AC_DIG1_EMPHASIS)
2268 			sbits |= IEC958_AES0_CON_EMPHASIS_5015;
2269 		if (!(val & AC_DIG1_COPYRIGHT))
2270 			sbits |= IEC958_AES0_CON_NOT_COPYRIGHT;
2271 		if (val & AC_DIG1_LEVEL)
2272 			sbits |= (IEC958_AES1_CON_ORIGINAL << 8);
2273 		sbits |= val & (0x7f << 8);
2274 	}
2275 	return sbits;
2276 }
2277 
2278 /* set digital convert verbs both for the given NID and its followers */
set_dig_out(struct hda_codec * codec,hda_nid_t nid,int mask,int val)2279 static void set_dig_out(struct hda_codec *codec, hda_nid_t nid,
2280 			int mask, int val)
2281 {
2282 	const hda_nid_t *d;
2283 
2284 	snd_hdac_regmap_update(&codec->core, nid, AC_VERB_SET_DIGI_CONVERT_1,
2285 			       mask, val);
2286 	d = codec->follower_dig_outs;
2287 	if (!d)
2288 		return;
2289 	for (; *d; d++)
2290 		snd_hdac_regmap_update(&codec->core, *d,
2291 				       AC_VERB_SET_DIGI_CONVERT_1, mask, val);
2292 }
2293 
set_dig_out_convert(struct hda_codec * codec,hda_nid_t nid,int dig1,int dig2)2294 static inline void set_dig_out_convert(struct hda_codec *codec, hda_nid_t nid,
2295 				       int dig1, int dig2)
2296 {
2297 	unsigned int mask = 0;
2298 	unsigned int val = 0;
2299 
2300 	if (dig1 != -1) {
2301 		mask |= 0xff;
2302 		val = dig1;
2303 	}
2304 	if (dig2 != -1) {
2305 		mask |= 0xff00;
2306 		val |= dig2 << 8;
2307 	}
2308 	set_dig_out(codec, nid, mask, val);
2309 }
2310 
snd_hda_spdif_default_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)2311 static int snd_hda_spdif_default_put(struct snd_kcontrol *kcontrol,
2312 				     struct snd_ctl_elem_value *ucontrol)
2313 {
2314 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
2315 	int idx = kcontrol->private_value;
2316 	struct hda_spdif_out *spdif;
2317 	hda_nid_t nid;
2318 	unsigned short val;
2319 	int change;
2320 
2321 	if (WARN_ON(codec->spdif_out.used <= idx))
2322 		return -EINVAL;
2323 	mutex_lock(&codec->spdif_mutex);
2324 	spdif = snd_array_elem(&codec->spdif_out, idx);
2325 	nid = spdif->nid;
2326 	spdif->status = ucontrol->value.iec958.status[0] |
2327 		((unsigned int)ucontrol->value.iec958.status[1] << 8) |
2328 		((unsigned int)ucontrol->value.iec958.status[2] << 16) |
2329 		((unsigned int)ucontrol->value.iec958.status[3] << 24);
2330 	val = convert_from_spdif_status(spdif->status);
2331 	val |= spdif->ctls & 1;
2332 	change = spdif->ctls != val;
2333 	spdif->ctls = val;
2334 	if (change && nid != (u16)-1)
2335 		set_dig_out_convert(codec, nid, val & 0xff, (val >> 8) & 0xff);
2336 	mutex_unlock(&codec->spdif_mutex);
2337 	return change;
2338 }
2339 
2340 #define snd_hda_spdif_out_switch_info	snd_ctl_boolean_mono_info
2341 
snd_hda_spdif_out_switch_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)2342 static int snd_hda_spdif_out_switch_get(struct snd_kcontrol *kcontrol,
2343 					struct snd_ctl_elem_value *ucontrol)
2344 {
2345 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
2346 	int idx = kcontrol->private_value;
2347 	struct hda_spdif_out *spdif;
2348 
2349 	if (WARN_ON(codec->spdif_out.used <= idx))
2350 		return -EINVAL;
2351 	mutex_lock(&codec->spdif_mutex);
2352 	spdif = snd_array_elem(&codec->spdif_out, idx);
2353 	ucontrol->value.integer.value[0] = spdif->ctls & AC_DIG1_ENABLE;
2354 	mutex_unlock(&codec->spdif_mutex);
2355 	return 0;
2356 }
2357 
set_spdif_ctls(struct hda_codec * codec,hda_nid_t nid,int dig1,int dig2)2358 static inline void set_spdif_ctls(struct hda_codec *codec, hda_nid_t nid,
2359 				  int dig1, int dig2)
2360 {
2361 	set_dig_out_convert(codec, nid, dig1, dig2);
2362 	/* unmute amp switch (if any) */
2363 	if ((get_wcaps(codec, nid) & AC_WCAP_OUT_AMP) &&
2364 	    (dig1 & AC_DIG1_ENABLE))
2365 		snd_hda_codec_amp_stereo(codec, nid, HDA_OUTPUT, 0,
2366 					    HDA_AMP_MUTE, 0);
2367 }
2368 
snd_hda_spdif_out_switch_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)2369 static int snd_hda_spdif_out_switch_put(struct snd_kcontrol *kcontrol,
2370 					struct snd_ctl_elem_value *ucontrol)
2371 {
2372 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
2373 	int idx = kcontrol->private_value;
2374 	struct hda_spdif_out *spdif;
2375 	hda_nid_t nid;
2376 	unsigned short val;
2377 	int change;
2378 
2379 	if (WARN_ON(codec->spdif_out.used <= idx))
2380 		return -EINVAL;
2381 	mutex_lock(&codec->spdif_mutex);
2382 	spdif = snd_array_elem(&codec->spdif_out, idx);
2383 	nid = spdif->nid;
2384 	val = spdif->ctls & ~AC_DIG1_ENABLE;
2385 	if (ucontrol->value.integer.value[0])
2386 		val |= AC_DIG1_ENABLE;
2387 	change = spdif->ctls != val;
2388 	spdif->ctls = val;
2389 	if (change && nid != (u16)-1)
2390 		set_spdif_ctls(codec, nid, val & 0xff, -1);
2391 	mutex_unlock(&codec->spdif_mutex);
2392 	return change;
2393 }
2394 
2395 static const struct snd_kcontrol_new dig_mixes[] = {
2396 	{
2397 		.access = SNDRV_CTL_ELEM_ACCESS_READ,
2398 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2399 		.name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, CON_MASK),
2400 		.info = snd_hda_spdif_mask_info,
2401 		.get = snd_hda_spdif_cmask_get,
2402 	},
2403 	{
2404 		.access = SNDRV_CTL_ELEM_ACCESS_READ,
2405 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2406 		.name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, PRO_MASK),
2407 		.info = snd_hda_spdif_mask_info,
2408 		.get = snd_hda_spdif_pmask_get,
2409 	},
2410 	{
2411 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2412 		.name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT),
2413 		.info = snd_hda_spdif_mask_info,
2414 		.get = snd_hda_spdif_default_get,
2415 		.put = snd_hda_spdif_default_put,
2416 	},
2417 	{
2418 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2419 		.name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, SWITCH),
2420 		.info = snd_hda_spdif_out_switch_info,
2421 		.get = snd_hda_spdif_out_switch_get,
2422 		.put = snd_hda_spdif_out_switch_put,
2423 	},
2424 	{ } /* end */
2425 };
2426 
2427 /**
2428  * snd_hda_create_dig_out_ctls - create Output SPDIF-related controls
2429  * @codec: the HDA codec
2430  * @associated_nid: NID that new ctls associated with
2431  * @cvt_nid: converter NID
2432  * @type: HDA_PCM_TYPE_*
2433  * Creates controls related with the digital output.
2434  * Called from each patch supporting the digital out.
2435  *
2436  * Returns 0 if successful, or a negative error code.
2437  */
snd_hda_create_dig_out_ctls(struct hda_codec * codec,hda_nid_t associated_nid,hda_nid_t cvt_nid,int type)2438 int snd_hda_create_dig_out_ctls(struct hda_codec *codec,
2439 				hda_nid_t associated_nid,
2440 				hda_nid_t cvt_nid,
2441 				int type)
2442 {
2443 	int err;
2444 	struct snd_kcontrol *kctl;
2445 	const struct snd_kcontrol_new *dig_mix;
2446 	int idx = 0;
2447 	int val = 0;
2448 	const int spdif_index = 16;
2449 	struct hda_spdif_out *spdif;
2450 	struct hda_bus *bus = codec->bus;
2451 
2452 	if (bus->primary_dig_out_type == HDA_PCM_TYPE_HDMI &&
2453 	    type == HDA_PCM_TYPE_SPDIF) {
2454 		idx = spdif_index;
2455 	} else if (bus->primary_dig_out_type == HDA_PCM_TYPE_SPDIF &&
2456 		   type == HDA_PCM_TYPE_HDMI) {
2457 		/* suppose a single SPDIF device */
2458 		for (dig_mix = dig_mixes; dig_mix->name; dig_mix++) {
2459 			struct snd_ctl_elem_id id;
2460 
2461 			kctl = find_mixer_ctl(codec, dig_mix->name, 0, 0);
2462 			if (!kctl)
2463 				break;
2464 			id = kctl->id;
2465 			id.index = spdif_index;
2466 			snd_ctl_rename_id(codec->card, &kctl->id, &id);
2467 		}
2468 		bus->primary_dig_out_type = HDA_PCM_TYPE_HDMI;
2469 	}
2470 	if (!bus->primary_dig_out_type)
2471 		bus->primary_dig_out_type = type;
2472 
2473 	idx = find_empty_mixer_ctl_idx(codec, "IEC958 Playback Switch", idx);
2474 	if (idx < 0) {
2475 		codec_err(codec, "too many IEC958 outputs\n");
2476 		return -EBUSY;
2477 	}
2478 	spdif = snd_array_new(&codec->spdif_out);
2479 	if (!spdif)
2480 		return -ENOMEM;
2481 	for (dig_mix = dig_mixes; dig_mix->name; dig_mix++) {
2482 		kctl = snd_ctl_new1(dig_mix, codec);
2483 		if (!kctl)
2484 			return -ENOMEM;
2485 		kctl->id.index = idx;
2486 		kctl->private_value = codec->spdif_out.used - 1;
2487 		err = snd_hda_ctl_add(codec, associated_nid, kctl);
2488 		if (err < 0)
2489 			return err;
2490 	}
2491 	spdif->nid = cvt_nid;
2492 	snd_hdac_regmap_read(&codec->core, cvt_nid,
2493 			     AC_VERB_GET_DIGI_CONVERT_1, &val);
2494 	spdif->ctls = val;
2495 	spdif->status = convert_to_spdif_status(spdif->ctls);
2496 	return 0;
2497 }
2498 EXPORT_SYMBOL_GPL(snd_hda_create_dig_out_ctls);
2499 
2500 /**
2501  * snd_hda_spdif_out_of_nid - get the hda_spdif_out entry from the given NID
2502  * @codec: the HDA codec
2503  * @nid: widget NID
2504  *
2505  * call within spdif_mutex lock
2506  */
snd_hda_spdif_out_of_nid(struct hda_codec * codec,hda_nid_t nid)2507 struct hda_spdif_out *snd_hda_spdif_out_of_nid(struct hda_codec *codec,
2508 					       hda_nid_t nid)
2509 {
2510 	struct hda_spdif_out *spdif;
2511 	int i;
2512 
2513 	snd_array_for_each(&codec->spdif_out, i, spdif) {
2514 		if (spdif->nid == nid)
2515 			return spdif;
2516 	}
2517 	return NULL;
2518 }
2519 EXPORT_SYMBOL_GPL(snd_hda_spdif_out_of_nid);
2520 
2521 /**
2522  * snd_hda_spdif_ctls_unassign - Unassign the given SPDIF ctl
2523  * @codec: the HDA codec
2524  * @idx: the SPDIF ctl index
2525  *
2526  * Unassign the widget from the given SPDIF control.
2527  */
snd_hda_spdif_ctls_unassign(struct hda_codec * codec,int idx)2528 void snd_hda_spdif_ctls_unassign(struct hda_codec *codec, int idx)
2529 {
2530 	struct hda_spdif_out *spdif;
2531 
2532 	if (WARN_ON(codec->spdif_out.used <= idx))
2533 		return;
2534 	mutex_lock(&codec->spdif_mutex);
2535 	spdif = snd_array_elem(&codec->spdif_out, idx);
2536 	spdif->nid = (u16)-1;
2537 	mutex_unlock(&codec->spdif_mutex);
2538 }
2539 EXPORT_SYMBOL_GPL(snd_hda_spdif_ctls_unassign);
2540 
2541 /**
2542  * snd_hda_spdif_ctls_assign - Assign the SPDIF controls to the given NID
2543  * @codec: the HDA codec
2544  * @idx: the SPDIF ctl idx
2545  * @nid: widget NID
2546  *
2547  * Assign the widget to the SPDIF control with the given index.
2548  */
snd_hda_spdif_ctls_assign(struct hda_codec * codec,int idx,hda_nid_t nid)2549 void snd_hda_spdif_ctls_assign(struct hda_codec *codec, int idx, hda_nid_t nid)
2550 {
2551 	struct hda_spdif_out *spdif;
2552 	unsigned short val;
2553 
2554 	if (WARN_ON(codec->spdif_out.used <= idx))
2555 		return;
2556 	mutex_lock(&codec->spdif_mutex);
2557 	spdif = snd_array_elem(&codec->spdif_out, idx);
2558 	if (spdif->nid != nid) {
2559 		spdif->nid = nid;
2560 		val = spdif->ctls;
2561 		set_spdif_ctls(codec, nid, val & 0xff, (val >> 8) & 0xff);
2562 	}
2563 	mutex_unlock(&codec->spdif_mutex);
2564 }
2565 EXPORT_SYMBOL_GPL(snd_hda_spdif_ctls_assign);
2566 
2567 /*
2568  * SPDIF sharing with analog output
2569  */
spdif_share_sw_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)2570 static int spdif_share_sw_get(struct snd_kcontrol *kcontrol,
2571 			      struct snd_ctl_elem_value *ucontrol)
2572 {
2573 	struct hda_multi_out *mout = snd_kcontrol_chip(kcontrol);
2574 	ucontrol->value.integer.value[0] = mout->share_spdif;
2575 	return 0;
2576 }
2577 
spdif_share_sw_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)2578 static int spdif_share_sw_put(struct snd_kcontrol *kcontrol,
2579 			      struct snd_ctl_elem_value *ucontrol)
2580 {
2581 	struct hda_multi_out *mout = snd_kcontrol_chip(kcontrol);
2582 	mout->share_spdif = !!ucontrol->value.integer.value[0];
2583 	return 0;
2584 }
2585 
2586 static const struct snd_kcontrol_new spdif_share_sw = {
2587 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2588 	.name = "IEC958 Default PCM Playback Switch",
2589 	.info = snd_ctl_boolean_mono_info,
2590 	.get = spdif_share_sw_get,
2591 	.put = spdif_share_sw_put,
2592 };
2593 
2594 /**
2595  * snd_hda_create_spdif_share_sw - create Default PCM switch
2596  * @codec: the HDA codec
2597  * @mout: multi-out instance
2598  */
snd_hda_create_spdif_share_sw(struct hda_codec * codec,struct hda_multi_out * mout)2599 int snd_hda_create_spdif_share_sw(struct hda_codec *codec,
2600 				  struct hda_multi_out *mout)
2601 {
2602 	struct snd_kcontrol *kctl;
2603 
2604 	if (!mout->dig_out_nid)
2605 		return 0;
2606 
2607 	kctl = snd_ctl_new1(&spdif_share_sw, mout);
2608 	if (!kctl)
2609 		return -ENOMEM;
2610 	/* ATTENTION: here mout is passed as private_data, instead of codec */
2611 	return snd_hda_ctl_add(codec, mout->dig_out_nid, kctl);
2612 }
2613 EXPORT_SYMBOL_GPL(snd_hda_create_spdif_share_sw);
2614 
2615 /*
2616  * SPDIF input
2617  */
2618 
2619 #define snd_hda_spdif_in_switch_info	snd_hda_spdif_out_switch_info
2620 
snd_hda_spdif_in_switch_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)2621 static int snd_hda_spdif_in_switch_get(struct snd_kcontrol *kcontrol,
2622 				       struct snd_ctl_elem_value *ucontrol)
2623 {
2624 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
2625 
2626 	ucontrol->value.integer.value[0] = codec->spdif_in_enable;
2627 	return 0;
2628 }
2629 
snd_hda_spdif_in_switch_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)2630 static int snd_hda_spdif_in_switch_put(struct snd_kcontrol *kcontrol,
2631 				       struct snd_ctl_elem_value *ucontrol)
2632 {
2633 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
2634 	hda_nid_t nid = kcontrol->private_value;
2635 	unsigned int val = !!ucontrol->value.integer.value[0];
2636 	int change;
2637 
2638 	mutex_lock(&codec->spdif_mutex);
2639 	change = codec->spdif_in_enable != val;
2640 	if (change) {
2641 		codec->spdif_in_enable = val;
2642 		snd_hdac_regmap_write(&codec->core, nid,
2643 				      AC_VERB_SET_DIGI_CONVERT_1, val);
2644 	}
2645 	mutex_unlock(&codec->spdif_mutex);
2646 	return change;
2647 }
2648 
snd_hda_spdif_in_status_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)2649 static int snd_hda_spdif_in_status_get(struct snd_kcontrol *kcontrol,
2650 				       struct snd_ctl_elem_value *ucontrol)
2651 {
2652 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
2653 	hda_nid_t nid = kcontrol->private_value;
2654 	unsigned int val;
2655 	unsigned int sbits;
2656 
2657 	snd_hdac_regmap_read(&codec->core, nid,
2658 			     AC_VERB_GET_DIGI_CONVERT_1, &val);
2659 	sbits = convert_to_spdif_status(val);
2660 	ucontrol->value.iec958.status[0] = sbits;
2661 	ucontrol->value.iec958.status[1] = sbits >> 8;
2662 	ucontrol->value.iec958.status[2] = sbits >> 16;
2663 	ucontrol->value.iec958.status[3] = sbits >> 24;
2664 	return 0;
2665 }
2666 
2667 static const struct snd_kcontrol_new dig_in_ctls[] = {
2668 	{
2669 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2670 		.name = SNDRV_CTL_NAME_IEC958("", CAPTURE, SWITCH),
2671 		.info = snd_hda_spdif_in_switch_info,
2672 		.get = snd_hda_spdif_in_switch_get,
2673 		.put = snd_hda_spdif_in_switch_put,
2674 	},
2675 	{
2676 		.access = SNDRV_CTL_ELEM_ACCESS_READ,
2677 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2678 		.name = SNDRV_CTL_NAME_IEC958("", CAPTURE, DEFAULT),
2679 		.info = snd_hda_spdif_mask_info,
2680 		.get = snd_hda_spdif_in_status_get,
2681 	},
2682 	{ } /* end */
2683 };
2684 
2685 /**
2686  * snd_hda_create_spdif_in_ctls - create Input SPDIF-related controls
2687  * @codec: the HDA codec
2688  * @nid: audio in widget NID
2689  *
2690  * Creates controls related with the SPDIF input.
2691  * Called from each patch supporting the SPDIF in.
2692  *
2693  * Returns 0 if successful, or a negative error code.
2694  */
snd_hda_create_spdif_in_ctls(struct hda_codec * codec,hda_nid_t nid)2695 int snd_hda_create_spdif_in_ctls(struct hda_codec *codec, hda_nid_t nid)
2696 {
2697 	int err;
2698 	struct snd_kcontrol *kctl;
2699 	const struct snd_kcontrol_new *dig_mix;
2700 	int idx;
2701 
2702 	idx = find_empty_mixer_ctl_idx(codec, "IEC958 Capture Switch", 0);
2703 	if (idx < 0) {
2704 		codec_err(codec, "too many IEC958 inputs\n");
2705 		return -EBUSY;
2706 	}
2707 	for (dig_mix = dig_in_ctls; dig_mix->name; dig_mix++) {
2708 		kctl = snd_ctl_new1(dig_mix, codec);
2709 		if (!kctl)
2710 			return -ENOMEM;
2711 		kctl->private_value = nid;
2712 		err = snd_hda_ctl_add(codec, nid, kctl);
2713 		if (err < 0)
2714 			return err;
2715 	}
2716 	codec->spdif_in_enable =
2717 		snd_hda_codec_read(codec, nid, 0,
2718 				   AC_VERB_GET_DIGI_CONVERT_1, 0) &
2719 		AC_DIG1_ENABLE;
2720 	return 0;
2721 }
2722 EXPORT_SYMBOL_GPL(snd_hda_create_spdif_in_ctls);
2723 
2724 /**
2725  * snd_hda_codec_set_power_to_all - Set the power state to all widgets
2726  * @codec: the HDA codec
2727  * @fg: function group (not used now)
2728  * @power_state: the power state to set (AC_PWRST_*)
2729  *
2730  * Set the given power state to all widgets that have the power control.
2731  * If the codec has power_filter set, it evaluates the power state and
2732  * filter out if it's unchanged as D3.
2733  */
snd_hda_codec_set_power_to_all(struct hda_codec * codec,hda_nid_t fg,unsigned int power_state)2734 void snd_hda_codec_set_power_to_all(struct hda_codec *codec, hda_nid_t fg,
2735 				    unsigned int power_state)
2736 {
2737 	hda_nid_t nid;
2738 
2739 	for_each_hda_codec_node(nid, codec) {
2740 		unsigned int wcaps = get_wcaps(codec, nid);
2741 		unsigned int state = power_state;
2742 		if (!(wcaps & AC_WCAP_POWER))
2743 			continue;
2744 		if (codec->power_filter) {
2745 			state = codec->power_filter(codec, nid, power_state);
2746 			if (state != power_state && power_state == AC_PWRST_D3)
2747 				continue;
2748 		}
2749 		snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_POWER_STATE,
2750 				    state);
2751 	}
2752 }
2753 EXPORT_SYMBOL_GPL(snd_hda_codec_set_power_to_all);
2754 
2755 /**
2756  * snd_hda_codec_eapd_power_filter - A power filter callback for EAPD
2757  * @codec: the HDA codec
2758  * @nid: widget NID
2759  * @power_state: power state to evalue
2760  *
2761  * Don't power down the widget if it controls eapd and EAPD_BTLENABLE is set.
2762  * This can be used a codec power_filter callback.
2763  */
snd_hda_codec_eapd_power_filter(struct hda_codec * codec,hda_nid_t nid,unsigned int power_state)2764 unsigned int snd_hda_codec_eapd_power_filter(struct hda_codec *codec,
2765 					     hda_nid_t nid,
2766 					     unsigned int power_state)
2767 {
2768 	if (nid == codec->core.afg || nid == codec->core.mfg)
2769 		return power_state;
2770 	if (power_state == AC_PWRST_D3 &&
2771 	    get_wcaps_type(get_wcaps(codec, nid)) == AC_WID_PIN &&
2772 	    (snd_hda_query_pin_caps(codec, nid) & AC_PINCAP_EAPD)) {
2773 		int eapd = snd_hda_codec_read(codec, nid, 0,
2774 					      AC_VERB_GET_EAPD_BTLENABLE, 0);
2775 		if (eapd & 0x02)
2776 			return AC_PWRST_D0;
2777 	}
2778 	return power_state;
2779 }
2780 EXPORT_SYMBOL_GPL(snd_hda_codec_eapd_power_filter);
2781 
2782 /*
2783  * set power state of the codec, and return the power state
2784  */
hda_set_power_state(struct hda_codec * codec,unsigned int power_state)2785 static unsigned int hda_set_power_state(struct hda_codec *codec,
2786 					unsigned int power_state)
2787 {
2788 	hda_nid_t fg = codec->core.afg ? codec->core.afg : codec->core.mfg;
2789 	int count;
2790 	unsigned int state;
2791 	int flags = 0;
2792 
2793 	/* this delay seems necessary to avoid click noise at power-down */
2794 	if (power_state == AC_PWRST_D3) {
2795 		if (codec->depop_delay < 0)
2796 			msleep(codec_has_epss(codec) ? 10 : 100);
2797 		else if (codec->depop_delay > 0)
2798 			msleep(codec->depop_delay);
2799 		flags = HDA_RW_NO_RESPONSE_FALLBACK;
2800 	}
2801 
2802 	/* repeat power states setting at most 10 times*/
2803 	for (count = 0; count < 10; count++) {
2804 		if (codec->patch_ops.set_power_state)
2805 			codec->patch_ops.set_power_state(codec, fg,
2806 							 power_state);
2807 		else {
2808 			state = power_state;
2809 			if (codec->power_filter)
2810 				state = codec->power_filter(codec, fg, state);
2811 			if (state == power_state || power_state != AC_PWRST_D3)
2812 				snd_hda_codec_read(codec, fg, flags,
2813 						   AC_VERB_SET_POWER_STATE,
2814 						   state);
2815 			snd_hda_codec_set_power_to_all(codec, fg, power_state);
2816 		}
2817 		state = snd_hda_sync_power_state(codec, fg, power_state);
2818 		if (!(state & AC_PWRST_ERROR))
2819 			break;
2820 	}
2821 
2822 	return state;
2823 }
2824 
2825 /* sync power states of all widgets;
2826  * this is called at the end of codec parsing
2827  */
sync_power_up_states(struct hda_codec * codec)2828 static void sync_power_up_states(struct hda_codec *codec)
2829 {
2830 	hda_nid_t nid;
2831 
2832 	/* don't care if no filter is used */
2833 	if (!codec->power_filter)
2834 		return;
2835 
2836 	for_each_hda_codec_node(nid, codec) {
2837 		unsigned int wcaps = get_wcaps(codec, nid);
2838 		unsigned int target;
2839 		if (!(wcaps & AC_WCAP_POWER))
2840 			continue;
2841 		target = codec->power_filter(codec, nid, AC_PWRST_D0);
2842 		if (target == AC_PWRST_D0)
2843 			continue;
2844 		if (!snd_hda_check_power_state(codec, nid, target))
2845 			snd_hda_codec_write(codec, nid, 0,
2846 					    AC_VERB_SET_POWER_STATE, target);
2847 	}
2848 }
2849 
2850 #ifdef CONFIG_SND_HDA_RECONFIG
2851 /* execute additional init verbs */
hda_exec_init_verbs(struct hda_codec * codec)2852 static void hda_exec_init_verbs(struct hda_codec *codec)
2853 {
2854 	if (codec->init_verbs.list)
2855 		snd_hda_sequence_write(codec, codec->init_verbs.list);
2856 }
2857 #else
hda_exec_init_verbs(struct hda_codec * codec)2858 static inline void hda_exec_init_verbs(struct hda_codec *codec) {}
2859 #endif
2860 
2861 #ifdef CONFIG_PM
2862 /* update the power on/off account with the current jiffies */
update_power_acct(struct hda_codec * codec,bool on)2863 static void update_power_acct(struct hda_codec *codec, bool on)
2864 {
2865 	unsigned long delta = jiffies - codec->power_jiffies;
2866 
2867 	if (on)
2868 		codec->power_on_acct += delta;
2869 	else
2870 		codec->power_off_acct += delta;
2871 	codec->power_jiffies += delta;
2872 }
2873 
snd_hda_update_power_acct(struct hda_codec * codec)2874 void snd_hda_update_power_acct(struct hda_codec *codec)
2875 {
2876 	update_power_acct(codec, hda_codec_is_power_on(codec));
2877 }
2878 
2879 /*
2880  * call suspend and power-down; used both from PM and power-save
2881  * this function returns the power state in the end
2882  */
hda_call_codec_suspend(struct hda_codec * codec)2883 static unsigned int hda_call_codec_suspend(struct hda_codec *codec)
2884 {
2885 	unsigned int state;
2886 
2887 	snd_hdac_enter_pm(&codec->core);
2888 	if (codec->patch_ops.suspend)
2889 		codec->patch_ops.suspend(codec);
2890 	if (!codec->no_stream_clean_at_suspend)
2891 		hda_cleanup_all_streams(codec);
2892 	state = hda_set_power_state(codec, AC_PWRST_D3);
2893 	update_power_acct(codec, true);
2894 	snd_hdac_leave_pm(&codec->core);
2895 	return state;
2896 }
2897 
2898 /*
2899  * kick up codec; used both from PM and power-save
2900  */
hda_call_codec_resume(struct hda_codec * codec)2901 static void hda_call_codec_resume(struct hda_codec *codec)
2902 {
2903 	snd_hdac_enter_pm(&codec->core);
2904 	if (codec->core.regmap)
2905 		regcache_mark_dirty(codec->core.regmap);
2906 
2907 	codec->power_jiffies = jiffies;
2908 
2909 	hda_set_power_state(codec, AC_PWRST_D0);
2910 	restore_shutup_pins(codec);
2911 	hda_exec_init_verbs(codec);
2912 	snd_hda_jack_set_dirty_all(codec);
2913 	if (codec->patch_ops.resume)
2914 		codec->patch_ops.resume(codec);
2915 	else {
2916 		if (codec->patch_ops.init)
2917 			codec->patch_ops.init(codec);
2918 		snd_hda_regmap_sync(codec);
2919 	}
2920 
2921 	if (codec->jackpoll_interval)
2922 		hda_jackpoll_work(&codec->jackpoll_work.work);
2923 	else
2924 		snd_hda_jack_report_sync(codec);
2925 	codec->core.dev.power.power_state = PMSG_ON;
2926 	snd_hdac_leave_pm(&codec->core);
2927 }
2928 
hda_codec_runtime_suspend(struct device * dev)2929 static int hda_codec_runtime_suspend(struct device *dev)
2930 {
2931 	struct hda_codec *codec = dev_to_hda_codec(dev);
2932 	unsigned int state;
2933 
2934 	/* Nothing to do if card registration fails and the component driver never probes */
2935 	if (!codec->card)
2936 		return 0;
2937 
2938 	cancel_delayed_work_sync(&codec->jackpoll_work);
2939 
2940 	state = hda_call_codec_suspend(codec);
2941 	if (codec->link_down_at_suspend ||
2942 	    (codec_has_clkstop(codec) && codec_has_epss(codec) &&
2943 	     (state & AC_PWRST_CLK_STOP_OK)))
2944 		snd_hdac_codec_link_down(&codec->core);
2945 	snd_hda_codec_display_power(codec, false);
2946 
2947 	if (codec->bus->jackpoll_in_suspend &&
2948 		(dev->power.power_state.event != PM_EVENT_SUSPEND))
2949 		schedule_delayed_work(&codec->jackpoll_work,
2950 					codec->jackpoll_interval);
2951 	return 0;
2952 }
2953 
hda_codec_runtime_resume(struct device * dev)2954 static int hda_codec_runtime_resume(struct device *dev)
2955 {
2956 	struct hda_codec *codec = dev_to_hda_codec(dev);
2957 
2958 	/* Nothing to do if card registration fails and the component driver never probes */
2959 	if (!codec->card)
2960 		return 0;
2961 
2962 	snd_hda_codec_display_power(codec, true);
2963 	snd_hdac_codec_link_up(&codec->core);
2964 	hda_call_codec_resume(codec);
2965 	pm_runtime_mark_last_busy(dev);
2966 	return 0;
2967 }
2968 
2969 #endif /* CONFIG_PM */
2970 
2971 #ifdef CONFIG_PM_SLEEP
hda_codec_pm_prepare(struct device * dev)2972 static int hda_codec_pm_prepare(struct device *dev)
2973 {
2974 	struct hda_codec *codec = dev_to_hda_codec(dev);
2975 
2976 	cancel_delayed_work_sync(&codec->jackpoll_work);
2977 	dev->power.power_state = PMSG_SUSPEND;
2978 	return pm_runtime_suspended(dev);
2979 }
2980 
hda_codec_pm_complete(struct device * dev)2981 static void hda_codec_pm_complete(struct device *dev)
2982 {
2983 	struct hda_codec *codec = dev_to_hda_codec(dev);
2984 
2985 	/* If no other pm-functions are called between prepare() and complete() */
2986 	if (dev->power.power_state.event == PM_EVENT_SUSPEND)
2987 		dev->power.power_state = PMSG_RESUME;
2988 
2989 	if (pm_runtime_suspended(dev) && (codec->jackpoll_interval ||
2990 	    hda_codec_need_resume(codec) || codec->forced_resume))
2991 		pm_request_resume(dev);
2992 }
2993 
hda_codec_pm_suspend(struct device * dev)2994 static int hda_codec_pm_suspend(struct device *dev)
2995 {
2996 	dev->power.power_state = PMSG_SUSPEND;
2997 	return pm_runtime_force_suspend(dev);
2998 }
2999 
hda_codec_pm_resume(struct device * dev)3000 static int hda_codec_pm_resume(struct device *dev)
3001 {
3002 	dev->power.power_state = PMSG_RESUME;
3003 	return pm_runtime_force_resume(dev);
3004 }
3005 
hda_codec_pm_freeze(struct device * dev)3006 static int hda_codec_pm_freeze(struct device *dev)
3007 {
3008 	struct hda_codec *codec = dev_to_hda_codec(dev);
3009 
3010 	cancel_delayed_work_sync(&codec->jackpoll_work);
3011 	dev->power.power_state = PMSG_FREEZE;
3012 	return pm_runtime_force_suspend(dev);
3013 }
3014 
hda_codec_pm_thaw(struct device * dev)3015 static int hda_codec_pm_thaw(struct device *dev)
3016 {
3017 	dev->power.power_state = PMSG_THAW;
3018 	return pm_runtime_force_resume(dev);
3019 }
3020 
hda_codec_pm_restore(struct device * dev)3021 static int hda_codec_pm_restore(struct device *dev)
3022 {
3023 	dev->power.power_state = PMSG_RESTORE;
3024 	return pm_runtime_force_resume(dev);
3025 }
3026 #endif /* CONFIG_PM_SLEEP */
3027 
3028 /* referred in hda_bind.c */
3029 const struct dev_pm_ops hda_codec_driver_pm = {
3030 #ifdef CONFIG_PM_SLEEP
3031 	.prepare = hda_codec_pm_prepare,
3032 	.complete = hda_codec_pm_complete,
3033 	.suspend = hda_codec_pm_suspend,
3034 	.resume = hda_codec_pm_resume,
3035 	.freeze = hda_codec_pm_freeze,
3036 	.thaw = hda_codec_pm_thaw,
3037 	.poweroff = hda_codec_pm_suspend,
3038 	.restore = hda_codec_pm_restore,
3039 #endif /* CONFIG_PM_SLEEP */
3040 	SET_RUNTIME_PM_OPS(hda_codec_runtime_suspend, hda_codec_runtime_resume,
3041 			   NULL)
3042 };
3043 
3044 /* suspend the codec at shutdown; called from driver's shutdown callback */
snd_hda_codec_shutdown(struct hda_codec * codec)3045 void snd_hda_codec_shutdown(struct hda_codec *codec)
3046 {
3047 	struct hda_pcm *cpcm;
3048 
3049 	/* Skip the shutdown if codec is not registered */
3050 	if (!codec->core.registered)
3051 		return;
3052 
3053 	cancel_delayed_work_sync(&codec->jackpoll_work);
3054 	list_for_each_entry(cpcm, &codec->pcm_list_head, list)
3055 		snd_pcm_suspend_all(cpcm->pcm);
3056 
3057 	pm_runtime_force_suspend(hda_codec_dev(codec));
3058 	pm_runtime_disable(hda_codec_dev(codec));
3059 }
3060 
3061 /*
3062  * add standard channel maps if not specified
3063  */
add_std_chmaps(struct hda_codec * codec)3064 static int add_std_chmaps(struct hda_codec *codec)
3065 {
3066 	struct hda_pcm *pcm;
3067 	int str, err;
3068 
3069 	list_for_each_entry(pcm, &codec->pcm_list_head, list) {
3070 		for (str = 0; str < 2; str++) {
3071 			struct hda_pcm_stream *hinfo = &pcm->stream[str];
3072 			struct snd_pcm_chmap *chmap;
3073 			const struct snd_pcm_chmap_elem *elem;
3074 
3075 			if (!pcm->pcm || pcm->own_chmap || !hinfo->substreams)
3076 				continue;
3077 			elem = hinfo->chmap ? hinfo->chmap : snd_pcm_std_chmaps;
3078 			err = snd_pcm_add_chmap_ctls(pcm->pcm, str, elem,
3079 						     hinfo->channels_max,
3080 						     0, &chmap);
3081 			if (err < 0)
3082 				return err;
3083 			chmap->channel_mask = SND_PCM_CHMAP_MASK_2468;
3084 		}
3085 	}
3086 	return 0;
3087 }
3088 
3089 /* default channel maps for 2.1 speakers;
3090  * since HD-audio supports only stereo, odd number channels are omitted
3091  */
3092 const struct snd_pcm_chmap_elem snd_pcm_2_1_chmaps[] = {
3093 	{ .channels = 2,
3094 	  .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
3095 	{ .channels = 4,
3096 	  .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR,
3097 		   SNDRV_CHMAP_LFE, SNDRV_CHMAP_LFE } },
3098 	{ }
3099 };
3100 EXPORT_SYMBOL_GPL(snd_pcm_2_1_chmaps);
3101 
snd_hda_codec_build_controls(struct hda_codec * codec)3102 int snd_hda_codec_build_controls(struct hda_codec *codec)
3103 {
3104 	int err = 0;
3105 	hda_exec_init_verbs(codec);
3106 	/* continue to initialize... */
3107 	if (codec->patch_ops.init)
3108 		err = codec->patch_ops.init(codec);
3109 	if (!err && codec->patch_ops.build_controls)
3110 		err = codec->patch_ops.build_controls(codec);
3111 	if (err < 0)
3112 		return err;
3113 
3114 	/* we create chmaps here instead of build_pcms */
3115 	err = add_std_chmaps(codec);
3116 	if (err < 0)
3117 		return err;
3118 
3119 	if (codec->jackpoll_interval)
3120 		hda_jackpoll_work(&codec->jackpoll_work.work);
3121 	else
3122 		snd_hda_jack_report_sync(codec); /* call at the last init point */
3123 	sync_power_up_states(codec);
3124 	return 0;
3125 }
3126 EXPORT_SYMBOL_GPL(snd_hda_codec_build_controls);
3127 
3128 /*
3129  * PCM stuff
3130  */
hda_pcm_default_open_close(struct hda_pcm_stream * hinfo,struct hda_codec * codec,struct snd_pcm_substream * substream)3131 static int hda_pcm_default_open_close(struct hda_pcm_stream *hinfo,
3132 				      struct hda_codec *codec,
3133 				      struct snd_pcm_substream *substream)
3134 {
3135 	return 0;
3136 }
3137 
hda_pcm_default_prepare(struct hda_pcm_stream * hinfo,struct hda_codec * codec,unsigned int stream_tag,unsigned int format,struct snd_pcm_substream * substream)3138 static int hda_pcm_default_prepare(struct hda_pcm_stream *hinfo,
3139 				   struct hda_codec *codec,
3140 				   unsigned int stream_tag,
3141 				   unsigned int format,
3142 				   struct snd_pcm_substream *substream)
3143 {
3144 	snd_hda_codec_setup_stream(codec, hinfo->nid, stream_tag, 0, format);
3145 	return 0;
3146 }
3147 
hda_pcm_default_cleanup(struct hda_pcm_stream * hinfo,struct hda_codec * codec,struct snd_pcm_substream * substream)3148 static int hda_pcm_default_cleanup(struct hda_pcm_stream *hinfo,
3149 				   struct hda_codec *codec,
3150 				   struct snd_pcm_substream *substream)
3151 {
3152 	snd_hda_codec_cleanup_stream(codec, hinfo->nid);
3153 	return 0;
3154 }
3155 
set_pcm_default_values(struct hda_codec * codec,struct hda_pcm_stream * info)3156 static int set_pcm_default_values(struct hda_codec *codec,
3157 				  struct hda_pcm_stream *info)
3158 {
3159 	int err;
3160 
3161 	/* query support PCM information from the given NID */
3162 	if (info->nid && (!info->rates || !info->formats)) {
3163 		err = snd_hda_query_supported_pcm(codec, info->nid,
3164 				info->rates ? NULL : &info->rates,
3165 				info->formats ? NULL : &info->formats,
3166 				info->maxbps ? NULL : &info->maxbps);
3167 		if (err < 0)
3168 			return err;
3169 	}
3170 	if (info->ops.open == NULL)
3171 		info->ops.open = hda_pcm_default_open_close;
3172 	if (info->ops.close == NULL)
3173 		info->ops.close = hda_pcm_default_open_close;
3174 	if (info->ops.prepare == NULL) {
3175 		if (snd_BUG_ON(!info->nid))
3176 			return -EINVAL;
3177 		info->ops.prepare = hda_pcm_default_prepare;
3178 	}
3179 	if (info->ops.cleanup == NULL) {
3180 		if (snd_BUG_ON(!info->nid))
3181 			return -EINVAL;
3182 		info->ops.cleanup = hda_pcm_default_cleanup;
3183 	}
3184 	return 0;
3185 }
3186 
3187 /*
3188  * codec prepare/cleanup entries
3189  */
3190 /**
3191  * snd_hda_codec_prepare - Prepare a stream
3192  * @codec: the HDA codec
3193  * @hinfo: PCM information
3194  * @stream: stream tag to assign
3195  * @format: format id to assign
3196  * @substream: PCM substream to assign
3197  *
3198  * Calls the prepare callback set by the codec with the given arguments.
3199  * Clean up the inactive streams when successful.
3200  */
snd_hda_codec_prepare(struct hda_codec * codec,struct hda_pcm_stream * hinfo,unsigned int stream,unsigned int format,struct snd_pcm_substream * substream)3201 int snd_hda_codec_prepare(struct hda_codec *codec,
3202 			  struct hda_pcm_stream *hinfo,
3203 			  unsigned int stream,
3204 			  unsigned int format,
3205 			  struct snd_pcm_substream *substream)
3206 {
3207 	int ret;
3208 	mutex_lock(&codec->bus->prepare_mutex);
3209 	if (hinfo->ops.prepare)
3210 		ret = hinfo->ops.prepare(hinfo, codec, stream, format,
3211 					 substream);
3212 	else
3213 		ret = -ENODEV;
3214 	if (ret >= 0)
3215 		purify_inactive_streams(codec);
3216 	mutex_unlock(&codec->bus->prepare_mutex);
3217 	return ret;
3218 }
3219 EXPORT_SYMBOL_GPL(snd_hda_codec_prepare);
3220 
3221 /**
3222  * snd_hda_codec_cleanup - Clean up stream resources
3223  * @codec: the HDA codec
3224  * @hinfo: PCM information
3225  * @substream: PCM substream
3226  *
3227  * Calls the cleanup callback set by the codec with the given arguments.
3228  */
snd_hda_codec_cleanup(struct hda_codec * codec,struct hda_pcm_stream * hinfo,struct snd_pcm_substream * substream)3229 void snd_hda_codec_cleanup(struct hda_codec *codec,
3230 			   struct hda_pcm_stream *hinfo,
3231 			   struct snd_pcm_substream *substream)
3232 {
3233 	mutex_lock(&codec->bus->prepare_mutex);
3234 	if (hinfo->ops.cleanup)
3235 		hinfo->ops.cleanup(hinfo, codec, substream);
3236 	mutex_unlock(&codec->bus->prepare_mutex);
3237 }
3238 EXPORT_SYMBOL_GPL(snd_hda_codec_cleanup);
3239 
3240 /* global */
3241 const char *snd_hda_pcm_type_name[HDA_PCM_NTYPES] = {
3242 	"Audio", "SPDIF", "HDMI", "Modem"
3243 };
3244 
3245 /*
3246  * get the empty PCM device number to assign
3247  */
get_empty_pcm_device(struct hda_bus * bus,unsigned int type)3248 static int get_empty_pcm_device(struct hda_bus *bus, unsigned int type)
3249 {
3250 	/* audio device indices; not linear to keep compatibility */
3251 	/* assigned to static slots up to dev#10; if more needed, assign
3252 	 * the later slot dynamically (when CONFIG_SND_DYNAMIC_MINORS=y)
3253 	 */
3254 	static const int audio_idx[HDA_PCM_NTYPES][5] = {
3255 		[HDA_PCM_TYPE_AUDIO] = { 0, 2, 4, 5, -1 },
3256 		[HDA_PCM_TYPE_SPDIF] = { 1, -1 },
3257 		[HDA_PCM_TYPE_HDMI]  = { 3, 7, 8, 9, -1 },
3258 		[HDA_PCM_TYPE_MODEM] = { 6, -1 },
3259 	};
3260 	int i;
3261 
3262 	if (type >= HDA_PCM_NTYPES) {
3263 		dev_err(bus->card->dev, "Invalid PCM type %d\n", type);
3264 		return -EINVAL;
3265 	}
3266 
3267 	for (i = 0; audio_idx[type][i] >= 0; i++) {
3268 #ifndef CONFIG_SND_DYNAMIC_MINORS
3269 		if (audio_idx[type][i] >= 8)
3270 			break;
3271 #endif
3272 		if (!test_and_set_bit(audio_idx[type][i], bus->pcm_dev_bits))
3273 			return audio_idx[type][i];
3274 	}
3275 
3276 #ifdef CONFIG_SND_DYNAMIC_MINORS
3277 	/* non-fixed slots starting from 10 */
3278 	for (i = 10; i < 32; i++) {
3279 		if (!test_and_set_bit(i, bus->pcm_dev_bits))
3280 			return i;
3281 	}
3282 #endif
3283 
3284 	dev_warn(bus->card->dev, "Too many %s devices\n",
3285 		snd_hda_pcm_type_name[type]);
3286 #ifndef CONFIG_SND_DYNAMIC_MINORS
3287 	dev_warn(bus->card->dev,
3288 		 "Consider building the kernel with CONFIG_SND_DYNAMIC_MINORS=y\n");
3289 #endif
3290 	return -EAGAIN;
3291 }
3292 
3293 /* call build_pcms ops of the given codec and set up the default parameters */
snd_hda_codec_parse_pcms(struct hda_codec * codec)3294 int snd_hda_codec_parse_pcms(struct hda_codec *codec)
3295 {
3296 	struct hda_pcm *cpcm;
3297 	int err;
3298 
3299 	if (!list_empty(&codec->pcm_list_head))
3300 		return 0; /* already parsed */
3301 
3302 	if (!codec->patch_ops.build_pcms)
3303 		return 0;
3304 
3305 	err = codec->patch_ops.build_pcms(codec);
3306 	if (err < 0) {
3307 		codec_err(codec, "cannot build PCMs for #%d (error %d)\n",
3308 			  codec->core.addr, err);
3309 		return err;
3310 	}
3311 
3312 	list_for_each_entry(cpcm, &codec->pcm_list_head, list) {
3313 		int stream;
3314 
3315 		for (stream = 0; stream < 2; stream++) {
3316 			struct hda_pcm_stream *info = &cpcm->stream[stream];
3317 
3318 			if (!info->substreams)
3319 				continue;
3320 			err = set_pcm_default_values(codec, info);
3321 			if (err < 0) {
3322 				codec_warn(codec,
3323 					   "fail to setup default for PCM %s\n",
3324 					   cpcm->name);
3325 				return err;
3326 			}
3327 		}
3328 	}
3329 
3330 	return 0;
3331 }
3332 EXPORT_SYMBOL_GPL(snd_hda_codec_parse_pcms);
3333 
3334 /* assign all PCMs of the given codec */
snd_hda_codec_build_pcms(struct hda_codec * codec)3335 int snd_hda_codec_build_pcms(struct hda_codec *codec)
3336 {
3337 	struct hda_bus *bus = codec->bus;
3338 	struct hda_pcm *cpcm;
3339 	int dev, err;
3340 
3341 	err = snd_hda_codec_parse_pcms(codec);
3342 	if (err < 0)
3343 		return err;
3344 
3345 	/* attach a new PCM streams */
3346 	list_for_each_entry(cpcm, &codec->pcm_list_head, list) {
3347 		if (cpcm->pcm)
3348 			continue; /* already attached */
3349 		if (!cpcm->stream[0].substreams && !cpcm->stream[1].substreams)
3350 			continue; /* no substreams assigned */
3351 
3352 		dev = get_empty_pcm_device(bus, cpcm->pcm_type);
3353 		if (dev < 0) {
3354 			cpcm->device = SNDRV_PCM_INVALID_DEVICE;
3355 			continue; /* no fatal error */
3356 		}
3357 		cpcm->device = dev;
3358 		err =  snd_hda_attach_pcm_stream(bus, codec, cpcm);
3359 		if (err < 0) {
3360 			codec_err(codec,
3361 				  "cannot attach PCM stream %d for codec #%d\n",
3362 				  dev, codec->core.addr);
3363 			continue; /* no fatal error */
3364 		}
3365 	}
3366 
3367 	return 0;
3368 }
3369 
3370 /**
3371  * snd_hda_add_new_ctls - create controls from the array
3372  * @codec: the HDA codec
3373  * @knew: the array of struct snd_kcontrol_new
3374  *
3375  * This helper function creates and add new controls in the given array.
3376  * The array must be terminated with an empty entry as terminator.
3377  *
3378  * Returns 0 if successful, or a negative error code.
3379  */
snd_hda_add_new_ctls(struct hda_codec * codec,const struct snd_kcontrol_new * knew)3380 int snd_hda_add_new_ctls(struct hda_codec *codec,
3381 			 const struct snd_kcontrol_new *knew)
3382 {
3383 	int err;
3384 
3385 	for (; knew->name; knew++) {
3386 		struct snd_kcontrol *kctl;
3387 		int addr = 0, idx = 0;
3388 		if (knew->iface == (__force snd_ctl_elem_iface_t)-1)
3389 			continue; /* skip this codec private value */
3390 		for (;;) {
3391 			kctl = snd_ctl_new1(knew, codec);
3392 			if (!kctl)
3393 				return -ENOMEM;
3394 			/* Do not use the id.device field for MIXER elements.
3395 			 * This field is for real device numbers (like PCM) but codecs
3396 			 * are hidden components from the user space view (unrelated
3397 			 * to the mixer element identification).
3398 			 */
3399 			if (addr > 0 && codec->ctl_dev_id)
3400 				kctl->id.device = addr;
3401 			if (idx > 0)
3402 				kctl->id.index = idx;
3403 			err = snd_hda_ctl_add(codec, 0, kctl);
3404 			if (!err)
3405 				break;
3406 			/* try first with another device index corresponding to
3407 			 * the codec addr; if it still fails (or it's the
3408 			 * primary codec), then try another control index
3409 			 */
3410 			if (!addr && codec->core.addr) {
3411 				addr = codec->core.addr;
3412 				if (!codec->ctl_dev_id)
3413 					idx += 10 * addr;
3414 			} else if (!idx && !knew->index) {
3415 				idx = find_empty_mixer_ctl_idx(codec,
3416 							       knew->name, 0);
3417 				if (idx <= 0)
3418 					return err;
3419 			} else
3420 				return err;
3421 		}
3422 	}
3423 	return 0;
3424 }
3425 EXPORT_SYMBOL_GPL(snd_hda_add_new_ctls);
3426 
3427 #ifdef CONFIG_PM
3428 /**
3429  * snd_hda_codec_set_power_save - Configure codec's runtime PM
3430  * @codec: codec device to configure
3431  * @delay: autosuspend delay
3432  */
snd_hda_codec_set_power_save(struct hda_codec * codec,int delay)3433 void snd_hda_codec_set_power_save(struct hda_codec *codec, int delay)
3434 {
3435 	struct device *dev = hda_codec_dev(codec);
3436 
3437 	if (delay == 0 && codec->auto_runtime_pm)
3438 		delay = 3000;
3439 
3440 	if (delay > 0) {
3441 		pm_runtime_set_autosuspend_delay(dev, delay);
3442 		pm_runtime_use_autosuspend(dev);
3443 		pm_runtime_allow(dev);
3444 		if (!pm_runtime_suspended(dev))
3445 			pm_runtime_mark_last_busy(dev);
3446 	} else {
3447 		pm_runtime_dont_use_autosuspend(dev);
3448 		pm_runtime_forbid(dev);
3449 	}
3450 }
3451 EXPORT_SYMBOL_GPL(snd_hda_codec_set_power_save);
3452 
3453 /**
3454  * snd_hda_set_power_save - reprogram autosuspend for the given delay
3455  * @bus: HD-audio bus
3456  * @delay: autosuspend delay in msec, 0 = off
3457  *
3458  * Synchronize the runtime PM autosuspend state from the power_save option.
3459  */
snd_hda_set_power_save(struct hda_bus * bus,int delay)3460 void snd_hda_set_power_save(struct hda_bus *bus, int delay)
3461 {
3462 	struct hda_codec *c;
3463 
3464 	list_for_each_codec(c, bus)
3465 		snd_hda_codec_set_power_save(c, delay);
3466 }
3467 EXPORT_SYMBOL_GPL(snd_hda_set_power_save);
3468 
3469 /**
3470  * snd_hda_check_amp_list_power - Check the amp list and update the power
3471  * @codec: HD-audio codec
3472  * @check: the object containing an AMP list and the status
3473  * @nid: NID to check / update
3474  *
3475  * Check whether the given NID is in the amp list.  If it's in the list,
3476  * check the current AMP status, and update the power-status according
3477  * to the mute status.
3478  *
3479  * This function is supposed to be set or called from the check_power_status
3480  * patch ops.
3481  */
snd_hda_check_amp_list_power(struct hda_codec * codec,struct hda_loopback_check * check,hda_nid_t nid)3482 int snd_hda_check_amp_list_power(struct hda_codec *codec,
3483 				 struct hda_loopback_check *check,
3484 				 hda_nid_t nid)
3485 {
3486 	const struct hda_amp_list *p;
3487 	int ch, v;
3488 
3489 	if (!check->amplist)
3490 		return 0;
3491 	for (p = check->amplist; p->nid; p++) {
3492 		if (p->nid == nid)
3493 			break;
3494 	}
3495 	if (!p->nid)
3496 		return 0; /* nothing changed */
3497 
3498 	for (p = check->amplist; p->nid; p++) {
3499 		for (ch = 0; ch < 2; ch++) {
3500 			v = snd_hda_codec_amp_read(codec, p->nid, ch, p->dir,
3501 						   p->idx);
3502 			if (!(v & HDA_AMP_MUTE) && v > 0) {
3503 				if (!check->power_on) {
3504 					check->power_on = 1;
3505 					snd_hda_power_up_pm(codec);
3506 				}
3507 				return 1;
3508 			}
3509 		}
3510 	}
3511 	if (check->power_on) {
3512 		check->power_on = 0;
3513 		snd_hda_power_down_pm(codec);
3514 	}
3515 	return 0;
3516 }
3517 EXPORT_SYMBOL_GPL(snd_hda_check_amp_list_power);
3518 #endif
3519 
3520 /*
3521  * input MUX helper
3522  */
3523 
3524 /**
3525  * snd_hda_input_mux_info - Info callback helper for the input-mux enum
3526  * @imux: imux helper object
3527  * @uinfo: pointer to get/store the data
3528  */
snd_hda_input_mux_info(const struct hda_input_mux * imux,struct snd_ctl_elem_info * uinfo)3529 int snd_hda_input_mux_info(const struct hda_input_mux *imux,
3530 			   struct snd_ctl_elem_info *uinfo)
3531 {
3532 	unsigned int index;
3533 
3534 	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
3535 	uinfo->count = 1;
3536 	uinfo->value.enumerated.items = imux->num_items;
3537 	if (!imux->num_items)
3538 		return 0;
3539 	index = uinfo->value.enumerated.item;
3540 	if (index >= imux->num_items)
3541 		index = imux->num_items - 1;
3542 	strcpy(uinfo->value.enumerated.name, imux->items[index].label);
3543 	return 0;
3544 }
3545 EXPORT_SYMBOL_GPL(snd_hda_input_mux_info);
3546 
3547 /**
3548  * snd_hda_input_mux_put - Put callback helper for the input-mux enum
3549  * @codec: the HDA codec
3550  * @imux: imux helper object
3551  * @ucontrol: pointer to get/store the data
3552  * @nid: input mux NID
3553  * @cur_val: pointer to get/store the current imux value
3554  */
snd_hda_input_mux_put(struct hda_codec * codec,const struct hda_input_mux * imux,struct snd_ctl_elem_value * ucontrol,hda_nid_t nid,unsigned int * cur_val)3555 int snd_hda_input_mux_put(struct hda_codec *codec,
3556 			  const struct hda_input_mux *imux,
3557 			  struct snd_ctl_elem_value *ucontrol,
3558 			  hda_nid_t nid,
3559 			  unsigned int *cur_val)
3560 {
3561 	unsigned int idx;
3562 
3563 	if (!imux->num_items)
3564 		return 0;
3565 	idx = ucontrol->value.enumerated.item[0];
3566 	if (idx >= imux->num_items)
3567 		idx = imux->num_items - 1;
3568 	if (*cur_val == idx)
3569 		return 0;
3570 	snd_hda_codec_write_cache(codec, nid, 0, AC_VERB_SET_CONNECT_SEL,
3571 				  imux->items[idx].index);
3572 	*cur_val = idx;
3573 	return 1;
3574 }
3575 EXPORT_SYMBOL_GPL(snd_hda_input_mux_put);
3576 
3577 
3578 /**
3579  * snd_hda_enum_helper_info - Helper for simple enum ctls
3580  * @kcontrol: ctl element
3581  * @uinfo: pointer to get/store the data
3582  * @num_items: number of enum items
3583  * @texts: enum item string array
3584  *
3585  * process kcontrol info callback of a simple string enum array
3586  * when @num_items is 0 or @texts is NULL, assume a boolean enum array
3587  */
snd_hda_enum_helper_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo,int num_items,const char * const * texts)3588 int snd_hda_enum_helper_info(struct snd_kcontrol *kcontrol,
3589 			     struct snd_ctl_elem_info *uinfo,
3590 			     int num_items, const char * const *texts)
3591 {
3592 	static const char * const texts_default[] = {
3593 		"Disabled", "Enabled"
3594 	};
3595 
3596 	if (!texts || !num_items) {
3597 		num_items = 2;
3598 		texts = texts_default;
3599 	}
3600 
3601 	return snd_ctl_enum_info(uinfo, 1, num_items, texts);
3602 }
3603 EXPORT_SYMBOL_GPL(snd_hda_enum_helper_info);
3604 
3605 /*
3606  * Multi-channel / digital-out PCM helper functions
3607  */
3608 
3609 /* setup SPDIF output stream */
setup_dig_out_stream(struct hda_codec * codec,hda_nid_t nid,unsigned int stream_tag,unsigned int format)3610 static void setup_dig_out_stream(struct hda_codec *codec, hda_nid_t nid,
3611 				 unsigned int stream_tag, unsigned int format)
3612 {
3613 	struct hda_spdif_out *spdif;
3614 	unsigned int curr_fmt;
3615 	bool reset;
3616 
3617 	spdif = snd_hda_spdif_out_of_nid(codec, nid);
3618 	/* Add sanity check to pass klockwork check.
3619 	 * This should never happen.
3620 	 */
3621 	if (WARN_ON(spdif == NULL))
3622 		return;
3623 
3624 	curr_fmt = snd_hda_codec_read(codec, nid, 0,
3625 				      AC_VERB_GET_STREAM_FORMAT, 0);
3626 	reset = codec->spdif_status_reset &&
3627 		(spdif->ctls & AC_DIG1_ENABLE) &&
3628 		curr_fmt != format;
3629 
3630 	/* turn off SPDIF if needed; otherwise the IEC958 bits won't be
3631 	   updated */
3632 	if (reset)
3633 		set_dig_out_convert(codec, nid,
3634 				    spdif->ctls & ~AC_DIG1_ENABLE & 0xff,
3635 				    -1);
3636 	snd_hda_codec_setup_stream(codec, nid, stream_tag, 0, format);
3637 	if (codec->follower_dig_outs) {
3638 		const hda_nid_t *d;
3639 		for (d = codec->follower_dig_outs; *d; d++)
3640 			snd_hda_codec_setup_stream(codec, *d, stream_tag, 0,
3641 						   format);
3642 	}
3643 	/* turn on again (if needed) */
3644 	if (reset)
3645 		set_dig_out_convert(codec, nid,
3646 				    spdif->ctls & 0xff, -1);
3647 }
3648 
cleanup_dig_out_stream(struct hda_codec * codec,hda_nid_t nid)3649 static void cleanup_dig_out_stream(struct hda_codec *codec, hda_nid_t nid)
3650 {
3651 	snd_hda_codec_cleanup_stream(codec, nid);
3652 	if (codec->follower_dig_outs) {
3653 		const hda_nid_t *d;
3654 		for (d = codec->follower_dig_outs; *d; d++)
3655 			snd_hda_codec_cleanup_stream(codec, *d);
3656 	}
3657 }
3658 
3659 /**
3660  * snd_hda_multi_out_dig_open - open the digital out in the exclusive mode
3661  * @codec: the HDA codec
3662  * @mout: hda_multi_out object
3663  */
snd_hda_multi_out_dig_open(struct hda_codec * codec,struct hda_multi_out * mout)3664 int snd_hda_multi_out_dig_open(struct hda_codec *codec,
3665 			       struct hda_multi_out *mout)
3666 {
3667 	mutex_lock(&codec->spdif_mutex);
3668 	if (mout->dig_out_used == HDA_DIG_ANALOG_DUP)
3669 		/* already opened as analog dup; reset it once */
3670 		cleanup_dig_out_stream(codec, mout->dig_out_nid);
3671 	mout->dig_out_used = HDA_DIG_EXCLUSIVE;
3672 	mutex_unlock(&codec->spdif_mutex);
3673 	return 0;
3674 }
3675 EXPORT_SYMBOL_GPL(snd_hda_multi_out_dig_open);
3676 
3677 /**
3678  * snd_hda_multi_out_dig_prepare - prepare the digital out stream
3679  * @codec: the HDA codec
3680  * @mout: hda_multi_out object
3681  * @stream_tag: stream tag to assign
3682  * @format: format id to assign
3683  * @substream: PCM substream to assign
3684  */
snd_hda_multi_out_dig_prepare(struct hda_codec * codec,struct hda_multi_out * mout,unsigned int stream_tag,unsigned int format,struct snd_pcm_substream * substream)3685 int snd_hda_multi_out_dig_prepare(struct hda_codec *codec,
3686 				  struct hda_multi_out *mout,
3687 				  unsigned int stream_tag,
3688 				  unsigned int format,
3689 				  struct snd_pcm_substream *substream)
3690 {
3691 	mutex_lock(&codec->spdif_mutex);
3692 	setup_dig_out_stream(codec, mout->dig_out_nid, stream_tag, format);
3693 	mutex_unlock(&codec->spdif_mutex);
3694 	return 0;
3695 }
3696 EXPORT_SYMBOL_GPL(snd_hda_multi_out_dig_prepare);
3697 
3698 /**
3699  * snd_hda_multi_out_dig_cleanup - clean-up the digital out stream
3700  * @codec: the HDA codec
3701  * @mout: hda_multi_out object
3702  */
snd_hda_multi_out_dig_cleanup(struct hda_codec * codec,struct hda_multi_out * mout)3703 int snd_hda_multi_out_dig_cleanup(struct hda_codec *codec,
3704 				  struct hda_multi_out *mout)
3705 {
3706 	mutex_lock(&codec->spdif_mutex);
3707 	cleanup_dig_out_stream(codec, mout->dig_out_nid);
3708 	mutex_unlock(&codec->spdif_mutex);
3709 	return 0;
3710 }
3711 EXPORT_SYMBOL_GPL(snd_hda_multi_out_dig_cleanup);
3712 
3713 /**
3714  * snd_hda_multi_out_dig_close - release the digital out stream
3715  * @codec: the HDA codec
3716  * @mout: hda_multi_out object
3717  */
snd_hda_multi_out_dig_close(struct hda_codec * codec,struct hda_multi_out * mout)3718 int snd_hda_multi_out_dig_close(struct hda_codec *codec,
3719 				struct hda_multi_out *mout)
3720 {
3721 	mutex_lock(&codec->spdif_mutex);
3722 	mout->dig_out_used = 0;
3723 	mutex_unlock(&codec->spdif_mutex);
3724 	return 0;
3725 }
3726 EXPORT_SYMBOL_GPL(snd_hda_multi_out_dig_close);
3727 
3728 /**
3729  * snd_hda_multi_out_analog_open - open analog outputs
3730  * @codec: the HDA codec
3731  * @mout: hda_multi_out object
3732  * @substream: PCM substream to assign
3733  * @hinfo: PCM information to assign
3734  *
3735  * Open analog outputs and set up the hw-constraints.
3736  * If the digital outputs can be opened as follower, open the digital
3737  * outputs, too.
3738  */
snd_hda_multi_out_analog_open(struct hda_codec * codec,struct hda_multi_out * mout,struct snd_pcm_substream * substream,struct hda_pcm_stream * hinfo)3739 int snd_hda_multi_out_analog_open(struct hda_codec *codec,
3740 				  struct hda_multi_out *mout,
3741 				  struct snd_pcm_substream *substream,
3742 				  struct hda_pcm_stream *hinfo)
3743 {
3744 	struct snd_pcm_runtime *runtime = substream->runtime;
3745 	runtime->hw.channels_max = mout->max_channels;
3746 	if (mout->dig_out_nid) {
3747 		if (!mout->analog_rates) {
3748 			mout->analog_rates = hinfo->rates;
3749 			mout->analog_formats = hinfo->formats;
3750 			mout->analog_maxbps = hinfo->maxbps;
3751 		} else {
3752 			runtime->hw.rates = mout->analog_rates;
3753 			runtime->hw.formats = mout->analog_formats;
3754 			hinfo->maxbps = mout->analog_maxbps;
3755 		}
3756 		if (!mout->spdif_rates) {
3757 			snd_hda_query_supported_pcm(codec, mout->dig_out_nid,
3758 						    &mout->spdif_rates,
3759 						    &mout->spdif_formats,
3760 						    &mout->spdif_maxbps);
3761 		}
3762 		mutex_lock(&codec->spdif_mutex);
3763 		if (mout->share_spdif) {
3764 			if ((runtime->hw.rates & mout->spdif_rates) &&
3765 			    (runtime->hw.formats & mout->spdif_formats)) {
3766 				runtime->hw.rates &= mout->spdif_rates;
3767 				runtime->hw.formats &= mout->spdif_formats;
3768 				if (mout->spdif_maxbps < hinfo->maxbps)
3769 					hinfo->maxbps = mout->spdif_maxbps;
3770 			} else {
3771 				mout->share_spdif = 0;
3772 				/* FIXME: need notify? */
3773 			}
3774 		}
3775 		mutex_unlock(&codec->spdif_mutex);
3776 	}
3777 	return snd_pcm_hw_constraint_step(substream->runtime, 0,
3778 					  SNDRV_PCM_HW_PARAM_CHANNELS, 2);
3779 }
3780 EXPORT_SYMBOL_GPL(snd_hda_multi_out_analog_open);
3781 
3782 /**
3783  * snd_hda_multi_out_analog_prepare - Preapre the analog outputs.
3784  * @codec: the HDA codec
3785  * @mout: hda_multi_out object
3786  * @stream_tag: stream tag to assign
3787  * @format: format id to assign
3788  * @substream: PCM substream to assign
3789  *
3790  * Set up the i/o for analog out.
3791  * When the digital out is available, copy the front out to digital out, too.
3792  */
snd_hda_multi_out_analog_prepare(struct hda_codec * codec,struct hda_multi_out * mout,unsigned int stream_tag,unsigned int format,struct snd_pcm_substream * substream)3793 int snd_hda_multi_out_analog_prepare(struct hda_codec *codec,
3794 				     struct hda_multi_out *mout,
3795 				     unsigned int stream_tag,
3796 				     unsigned int format,
3797 				     struct snd_pcm_substream *substream)
3798 {
3799 	const hda_nid_t *nids = mout->dac_nids;
3800 	int chs = substream->runtime->channels;
3801 	struct hda_spdif_out *spdif;
3802 	int i;
3803 
3804 	mutex_lock(&codec->spdif_mutex);
3805 	spdif = snd_hda_spdif_out_of_nid(codec, mout->dig_out_nid);
3806 	if (mout->dig_out_nid && mout->share_spdif &&
3807 	    mout->dig_out_used != HDA_DIG_EXCLUSIVE) {
3808 		if (chs == 2 && spdif != NULL &&
3809 		    snd_hda_is_supported_format(codec, mout->dig_out_nid,
3810 						format) &&
3811 		    !(spdif->status & IEC958_AES0_NONAUDIO)) {
3812 			mout->dig_out_used = HDA_DIG_ANALOG_DUP;
3813 			setup_dig_out_stream(codec, mout->dig_out_nid,
3814 					     stream_tag, format);
3815 		} else {
3816 			mout->dig_out_used = 0;
3817 			cleanup_dig_out_stream(codec, mout->dig_out_nid);
3818 		}
3819 	}
3820 	mutex_unlock(&codec->spdif_mutex);
3821 
3822 	/* front */
3823 	snd_hda_codec_setup_stream(codec, nids[HDA_FRONT], stream_tag,
3824 				   0, format);
3825 	if (!mout->no_share_stream &&
3826 	    mout->hp_nid && mout->hp_nid != nids[HDA_FRONT])
3827 		/* headphone out will just decode front left/right (stereo) */
3828 		snd_hda_codec_setup_stream(codec, mout->hp_nid, stream_tag,
3829 					   0, format);
3830 	/* extra outputs copied from front */
3831 	for (i = 0; i < ARRAY_SIZE(mout->hp_out_nid); i++)
3832 		if (!mout->no_share_stream && mout->hp_out_nid[i])
3833 			snd_hda_codec_setup_stream(codec,
3834 						   mout->hp_out_nid[i],
3835 						   stream_tag, 0, format);
3836 
3837 	/* surrounds */
3838 	for (i = 1; i < mout->num_dacs; i++) {
3839 		if (chs >= (i + 1) * 2) /* independent out */
3840 			snd_hda_codec_setup_stream(codec, nids[i], stream_tag,
3841 						   i * 2, format);
3842 		else if (!mout->no_share_stream) /* copy front */
3843 			snd_hda_codec_setup_stream(codec, nids[i], stream_tag,
3844 						   0, format);
3845 	}
3846 
3847 	/* extra surrounds */
3848 	for (i = 0; i < ARRAY_SIZE(mout->extra_out_nid); i++) {
3849 		int ch = 0;
3850 		if (!mout->extra_out_nid[i])
3851 			break;
3852 		if (chs >= (i + 1) * 2)
3853 			ch = i * 2;
3854 		else if (!mout->no_share_stream)
3855 			break;
3856 		snd_hda_codec_setup_stream(codec, mout->extra_out_nid[i],
3857 					   stream_tag, ch, format);
3858 	}
3859 
3860 	return 0;
3861 }
3862 EXPORT_SYMBOL_GPL(snd_hda_multi_out_analog_prepare);
3863 
3864 /**
3865  * snd_hda_multi_out_analog_cleanup - clean up the setting for analog out
3866  * @codec: the HDA codec
3867  * @mout: hda_multi_out object
3868  */
snd_hda_multi_out_analog_cleanup(struct hda_codec * codec,struct hda_multi_out * mout)3869 int snd_hda_multi_out_analog_cleanup(struct hda_codec *codec,
3870 				     struct hda_multi_out *mout)
3871 {
3872 	const hda_nid_t *nids = mout->dac_nids;
3873 	int i;
3874 
3875 	for (i = 0; i < mout->num_dacs; i++)
3876 		snd_hda_codec_cleanup_stream(codec, nids[i]);
3877 	if (mout->hp_nid)
3878 		snd_hda_codec_cleanup_stream(codec, mout->hp_nid);
3879 	for (i = 0; i < ARRAY_SIZE(mout->hp_out_nid); i++)
3880 		if (mout->hp_out_nid[i])
3881 			snd_hda_codec_cleanup_stream(codec,
3882 						     mout->hp_out_nid[i]);
3883 	for (i = 0; i < ARRAY_SIZE(mout->extra_out_nid); i++)
3884 		if (mout->extra_out_nid[i])
3885 			snd_hda_codec_cleanup_stream(codec,
3886 						     mout->extra_out_nid[i]);
3887 	mutex_lock(&codec->spdif_mutex);
3888 	if (mout->dig_out_nid && mout->dig_out_used == HDA_DIG_ANALOG_DUP) {
3889 		cleanup_dig_out_stream(codec, mout->dig_out_nid);
3890 		mout->dig_out_used = 0;
3891 	}
3892 	mutex_unlock(&codec->spdif_mutex);
3893 	return 0;
3894 }
3895 EXPORT_SYMBOL_GPL(snd_hda_multi_out_analog_cleanup);
3896 
3897 /**
3898  * snd_hda_get_default_vref - Get the default (mic) VREF pin bits
3899  * @codec: the HDA codec
3900  * @pin: referred pin NID
3901  *
3902  * Guess the suitable VREF pin bits to be set as the pin-control value.
3903  * Note: the function doesn't set the AC_PINCTL_IN_EN bit.
3904  */
snd_hda_get_default_vref(struct hda_codec * codec,hda_nid_t pin)3905 unsigned int snd_hda_get_default_vref(struct hda_codec *codec, hda_nid_t pin)
3906 {
3907 	unsigned int pincap;
3908 	unsigned int oldval;
3909 	oldval = snd_hda_codec_read(codec, pin, 0,
3910 				    AC_VERB_GET_PIN_WIDGET_CONTROL, 0);
3911 	pincap = snd_hda_query_pin_caps(codec, pin);
3912 	pincap = (pincap & AC_PINCAP_VREF) >> AC_PINCAP_VREF_SHIFT;
3913 	/* Exception: if the default pin setup is vref50, we give it priority */
3914 	if ((pincap & AC_PINCAP_VREF_80) && oldval != PIN_VREF50)
3915 		return AC_PINCTL_VREF_80;
3916 	else if (pincap & AC_PINCAP_VREF_50)
3917 		return AC_PINCTL_VREF_50;
3918 	else if (pincap & AC_PINCAP_VREF_100)
3919 		return AC_PINCTL_VREF_100;
3920 	else if (pincap & AC_PINCAP_VREF_GRD)
3921 		return AC_PINCTL_VREF_GRD;
3922 	return AC_PINCTL_VREF_HIZ;
3923 }
3924 EXPORT_SYMBOL_GPL(snd_hda_get_default_vref);
3925 
3926 /**
3927  * snd_hda_correct_pin_ctl - correct the pin ctl value for matching with the pin cap
3928  * @codec: the HDA codec
3929  * @pin: referred pin NID
3930  * @val: pin ctl value to audit
3931  */
snd_hda_correct_pin_ctl(struct hda_codec * codec,hda_nid_t pin,unsigned int val)3932 unsigned int snd_hda_correct_pin_ctl(struct hda_codec *codec,
3933 				     hda_nid_t pin, unsigned int val)
3934 {
3935 	static const unsigned int cap_lists[][2] = {
3936 		{ AC_PINCTL_VREF_100, AC_PINCAP_VREF_100 },
3937 		{ AC_PINCTL_VREF_80, AC_PINCAP_VREF_80 },
3938 		{ AC_PINCTL_VREF_50, AC_PINCAP_VREF_50 },
3939 		{ AC_PINCTL_VREF_GRD, AC_PINCAP_VREF_GRD },
3940 	};
3941 	unsigned int cap;
3942 
3943 	if (!val)
3944 		return 0;
3945 	cap = snd_hda_query_pin_caps(codec, pin);
3946 	if (!cap)
3947 		return val; /* don't know what to do... */
3948 
3949 	if (val & AC_PINCTL_OUT_EN) {
3950 		if (!(cap & AC_PINCAP_OUT))
3951 			val &= ~(AC_PINCTL_OUT_EN | AC_PINCTL_HP_EN);
3952 		else if ((val & AC_PINCTL_HP_EN) && !(cap & AC_PINCAP_HP_DRV))
3953 			val &= ~AC_PINCTL_HP_EN;
3954 	}
3955 
3956 	if (val & AC_PINCTL_IN_EN) {
3957 		if (!(cap & AC_PINCAP_IN))
3958 			val &= ~(AC_PINCTL_IN_EN | AC_PINCTL_VREFEN);
3959 		else {
3960 			unsigned int vcap, vref;
3961 			int i;
3962 			vcap = (cap & AC_PINCAP_VREF) >> AC_PINCAP_VREF_SHIFT;
3963 			vref = val & AC_PINCTL_VREFEN;
3964 			for (i = 0; i < ARRAY_SIZE(cap_lists); i++) {
3965 				if (vref == cap_lists[i][0] &&
3966 				    !(vcap & cap_lists[i][1])) {
3967 					if (i == ARRAY_SIZE(cap_lists) - 1)
3968 						vref = AC_PINCTL_VREF_HIZ;
3969 					else
3970 						vref = cap_lists[i + 1][0];
3971 				}
3972 			}
3973 			val &= ~AC_PINCTL_VREFEN;
3974 			val |= vref;
3975 		}
3976 	}
3977 
3978 	return val;
3979 }
3980 EXPORT_SYMBOL_GPL(snd_hda_correct_pin_ctl);
3981 
3982 /**
3983  * _snd_hda_set_pin_ctl - Helper to set pin ctl value
3984  * @codec: the HDA codec
3985  * @pin: referred pin NID
3986  * @val: pin control value to set
3987  * @cached: access over codec pinctl cache or direct write
3988  *
3989  * This function is a helper to set a pin ctl value more safely.
3990  * It corrects the pin ctl value via snd_hda_correct_pin_ctl(), stores the
3991  * value in pin target array via snd_hda_codec_set_pin_target(), then
3992  * actually writes the value via either snd_hda_codec_write_cache() or
3993  * snd_hda_codec_write() depending on @cached flag.
3994  */
_snd_hda_set_pin_ctl(struct hda_codec * codec,hda_nid_t pin,unsigned int val,bool cached)3995 int _snd_hda_set_pin_ctl(struct hda_codec *codec, hda_nid_t pin,
3996 			 unsigned int val, bool cached)
3997 {
3998 	val = snd_hda_correct_pin_ctl(codec, pin, val);
3999 	snd_hda_codec_set_pin_target(codec, pin, val);
4000 	if (cached)
4001 		return snd_hda_codec_write_cache(codec, pin, 0,
4002 				AC_VERB_SET_PIN_WIDGET_CONTROL, val);
4003 	else
4004 		return snd_hda_codec_write(codec, pin, 0,
4005 					   AC_VERB_SET_PIN_WIDGET_CONTROL, val);
4006 }
4007 EXPORT_SYMBOL_GPL(_snd_hda_set_pin_ctl);
4008 
4009 /**
4010  * snd_hda_add_imux_item - Add an item to input_mux
4011  * @codec: the HDA codec
4012  * @imux: imux helper object
4013  * @label: the name of imux item to assign
4014  * @index: index number of imux item to assign
4015  * @type_idx: pointer to store the resultant label index
4016  *
4017  * When the same label is used already in the existing items, the number
4018  * suffix is appended to the label.  This label index number is stored
4019  * to type_idx when non-NULL pointer is given.
4020  */
snd_hda_add_imux_item(struct hda_codec * codec,struct hda_input_mux * imux,const char * label,int index,int * type_idx)4021 int snd_hda_add_imux_item(struct hda_codec *codec,
4022 			  struct hda_input_mux *imux, const char *label,
4023 			  int index, int *type_idx)
4024 {
4025 	int i, label_idx = 0;
4026 	if (imux->num_items >= HDA_MAX_NUM_INPUTS) {
4027 		codec_err(codec, "hda_codec: Too many imux items!\n");
4028 		return -EINVAL;
4029 	}
4030 	for (i = 0; i < imux->num_items; i++) {
4031 		if (!strncmp(label, imux->items[i].label, strlen(label)))
4032 			label_idx++;
4033 	}
4034 	if (type_idx)
4035 		*type_idx = label_idx;
4036 	if (label_idx > 0)
4037 		snprintf(imux->items[imux->num_items].label,
4038 			 sizeof(imux->items[imux->num_items].label),
4039 			 "%s %d", label, label_idx);
4040 	else
4041 		strscpy(imux->items[imux->num_items].label, label,
4042 			sizeof(imux->items[imux->num_items].label));
4043 	imux->items[imux->num_items].index = index;
4044 	imux->num_items++;
4045 	return 0;
4046 }
4047 EXPORT_SYMBOL_GPL(snd_hda_add_imux_item);
4048 
4049 /**
4050  * snd_hda_bus_reset_codecs - Reset the bus
4051  * @bus: HD-audio bus
4052  */
snd_hda_bus_reset_codecs(struct hda_bus * bus)4053 void snd_hda_bus_reset_codecs(struct hda_bus *bus)
4054 {
4055 	struct hda_codec *codec;
4056 
4057 	list_for_each_codec(codec, bus) {
4058 		/* FIXME: maybe a better way needed for forced reset */
4059 		if (current_work() != &codec->jackpoll_work.work)
4060 			cancel_delayed_work_sync(&codec->jackpoll_work);
4061 #ifdef CONFIG_PM
4062 		if (hda_codec_is_power_on(codec)) {
4063 			hda_call_codec_suspend(codec);
4064 			hda_call_codec_resume(codec);
4065 		}
4066 #endif
4067 	}
4068 }
4069 
4070 /**
4071  * snd_print_pcm_bits - Print the supported PCM fmt bits to the string buffer
4072  * @pcm: PCM caps bits
4073  * @buf: the string buffer to write
4074  * @buflen: the max buffer length
4075  *
4076  * used by hda_proc.c and hda_eld.c
4077  */
snd_print_pcm_bits(int pcm,char * buf,int buflen)4078 void snd_print_pcm_bits(int pcm, char *buf, int buflen)
4079 {
4080 	static const unsigned int bits[] = { 8, 16, 20, 24, 32 };
4081 	int i, j;
4082 
4083 	for (i = 0, j = 0; i < ARRAY_SIZE(bits); i++)
4084 		if (pcm & (AC_SUPPCM_BITS_8 << i))
4085 			j += scnprintf(buf + j, buflen - j,  " %d", bits[i]);
4086 
4087 	buf[j] = '\0'; /* necessary when j == 0 */
4088 }
4089 EXPORT_SYMBOL_GPL(snd_print_pcm_bits);
4090 
4091 MODULE_DESCRIPTION("HDA codec core");
4092 MODULE_LICENSE("GPL");
4093