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->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->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->preset = NULL;
799 	codec->follower_dig_outs = NULL;
800 	codec->spdif_status_reset = 0;
801 	snd_array_free(&codec->mixers);
802 	snd_array_free(&codec->nids);
803 	remove_conn_list(codec);
804 	snd_hdac_regmap_exit(&codec->core);
805 	codec->configured = 0;
806 	refcount_set(&codec->pcm_ref, 1); /* reset refcount */
807 }
808 EXPORT_SYMBOL_GPL(snd_hda_codec_cleanup_for_unbind);
809 
810 static unsigned int hda_set_power_state(struct hda_codec *codec,
811 				unsigned int power_state);
812 
813 /* enable/disable display power per codec */
snd_hda_codec_display_power(struct hda_codec * codec,bool enable)814 void snd_hda_codec_display_power(struct hda_codec *codec, bool enable)
815 {
816 	if (codec->display_power_control)
817 		snd_hdac_display_power(&codec->bus->core, codec->addr, enable);
818 }
819 
820 /**
821  * snd_hda_codec_register - Finalize codec initialization
822  * @codec: codec device to register
823  *
824  * Also called from hda_bind.c
825  */
snd_hda_codec_register(struct hda_codec * codec)826 void snd_hda_codec_register(struct hda_codec *codec)
827 {
828 	if (codec->registered)
829 		return;
830 	if (device_is_registered(hda_codec_dev(codec))) {
831 		snd_hda_codec_display_power(codec, true);
832 		pm_runtime_enable(hda_codec_dev(codec));
833 		/* it was powered up in snd_hda_codec_new(), now all done */
834 		snd_hda_power_down(codec);
835 		codec->registered = 1;
836 	}
837 }
838 EXPORT_SYMBOL_GPL(snd_hda_codec_register);
839 
snd_hda_codec_dev_register(struct snd_device * device)840 static int snd_hda_codec_dev_register(struct snd_device *device)
841 {
842 	snd_hda_codec_register(device->device_data);
843 	return 0;
844 }
845 
846 /**
847  * snd_hda_codec_unregister - Unregister specified codec device
848  * @codec: codec device to unregister
849  */
snd_hda_codec_unregister(struct hda_codec * codec)850 void snd_hda_codec_unregister(struct hda_codec *codec)
851 {
852 	codec->in_freeing = 1;
853 	/*
854 	 * snd_hda_codec_device_new() is used by legacy HDA and ASoC driver.
855 	 * We can't unregister ASoC device since it will be unregistered in
856 	 * snd_hdac_ext_bus_device_remove().
857 	 */
858 	if (codec->core.type == HDA_DEV_LEGACY)
859 		snd_hdac_device_unregister(&codec->core);
860 	snd_hda_codec_display_power(codec, false);
861 
862 	/*
863 	 * In the case of ASoC HD-audio bus, the device refcount is released in
864 	 * snd_hdac_ext_bus_device_remove() explicitly.
865 	 */
866 	if (codec->core.type == HDA_DEV_LEGACY)
867 		put_device(hda_codec_dev(codec));
868 }
869 EXPORT_SYMBOL_GPL(snd_hda_codec_unregister);
870 
snd_hda_codec_dev_free(struct snd_device * device)871 static int snd_hda_codec_dev_free(struct snd_device *device)
872 {
873 	snd_hda_codec_unregister(device->device_data);
874 	return 0;
875 }
876 
snd_hda_codec_dev_release(struct device * dev)877 static void snd_hda_codec_dev_release(struct device *dev)
878 {
879 	struct hda_codec *codec = dev_to_hda_codec(dev);
880 
881 	free_init_pincfgs(codec);
882 	snd_hdac_device_exit(&codec->core);
883 	snd_hda_sysfs_clear(codec);
884 	kfree(codec->modelname);
885 	kfree(codec->wcaps);
886 
887 	/*
888 	 * In the case of ASoC HD-audio, hda_codec is device managed.
889 	 * It will be freed when the ASoC device is removed.
890 	 */
891 	if (codec->core.type == HDA_DEV_LEGACY)
892 		kfree(codec);
893 }
894 
895 #define DEV_NAME_LEN 31
896 
897 /**
898  * snd_hda_codec_device_init - allocate HDA codec device
899  * @bus: codec's parent bus
900  * @codec_addr: the codec address on the parent bus
901  * @fmt: format string for the device's name
902  *
903  * Returns newly allocated codec device or ERR_PTR() on failure.
904  */
905 struct hda_codec *
snd_hda_codec_device_init(struct hda_bus * bus,unsigned int codec_addr,const char * fmt,...)906 snd_hda_codec_device_init(struct hda_bus *bus, unsigned int codec_addr,
907 			  const char *fmt, ...)
908 {
909 	va_list vargs;
910 	char name[DEV_NAME_LEN];
911 	struct hda_codec *codec;
912 	int err;
913 
914 	if (snd_BUG_ON(!bus))
915 		return ERR_PTR(-EINVAL);
916 	if (snd_BUG_ON(codec_addr > HDA_MAX_CODEC_ADDRESS))
917 		return ERR_PTR(-EINVAL);
918 
919 	codec = kzalloc(sizeof(*codec), GFP_KERNEL);
920 	if (!codec)
921 		return ERR_PTR(-ENOMEM);
922 
923 	va_start(vargs, fmt);
924 	vsprintf(name, fmt, vargs);
925 	va_end(vargs);
926 
927 	err = snd_hdac_device_init(&codec->core, &bus->core, name, codec_addr);
928 	if (err < 0) {
929 		kfree(codec);
930 		return ERR_PTR(err);
931 	}
932 
933 	codec->bus = bus;
934 	codec->core.type = HDA_DEV_LEGACY;
935 
936 	return codec;
937 }
938 EXPORT_SYMBOL_GPL(snd_hda_codec_device_init);
939 
940 /**
941  * snd_hda_codec_new - create a HDA codec
942  * @bus: the bus to assign
943  * @card: card for this codec
944  * @codec_addr: the codec address
945  * @codecp: the pointer to store the generated codec
946  *
947  * Returns 0 if successful, or a negative error code.
948  */
snd_hda_codec_new(struct hda_bus * bus,struct snd_card * card,unsigned int codec_addr,struct hda_codec ** codecp)949 int snd_hda_codec_new(struct hda_bus *bus, struct snd_card *card,
950 		      unsigned int codec_addr, struct hda_codec **codecp)
951 {
952 	struct hda_codec *codec;
953 
954 	codec = snd_hda_codec_device_init(bus, codec_addr, "hdaudioC%dD%d",
955 					  card->number, codec_addr);
956 	if (IS_ERR(codec))
957 		return PTR_ERR(codec);
958 	*codecp = codec;
959 
960 	return snd_hda_codec_device_new(bus, card, codec_addr, *codecp, true);
961 }
962 EXPORT_SYMBOL_GPL(snd_hda_codec_new);
963 
snd_hda_codec_device_new(struct hda_bus * bus,struct snd_card * card,unsigned int codec_addr,struct hda_codec * codec,bool snddev_managed)964 int snd_hda_codec_device_new(struct hda_bus *bus, struct snd_card *card,
965 			unsigned int codec_addr, struct hda_codec *codec,
966 			bool snddev_managed)
967 {
968 	char component[31];
969 	hda_nid_t fg;
970 	int err;
971 	static const struct snd_device_ops dev_ops = {
972 		.dev_register = snd_hda_codec_dev_register,
973 		.dev_free = snd_hda_codec_dev_free,
974 	};
975 
976 	dev_dbg(card->dev, "%s: entry\n", __func__);
977 
978 	if (snd_BUG_ON(!bus))
979 		return -EINVAL;
980 	if (snd_BUG_ON(codec_addr > HDA_MAX_CODEC_ADDRESS))
981 		return -EINVAL;
982 
983 	codec->core.dev.release = snd_hda_codec_dev_release;
984 	codec->core.exec_verb = codec_exec_verb;
985 
986 	codec->card = card;
987 	codec->addr = codec_addr;
988 	mutex_init(&codec->spdif_mutex);
989 	mutex_init(&codec->control_mutex);
990 	snd_array_init(&codec->mixers, sizeof(struct hda_nid_item), 32);
991 	snd_array_init(&codec->nids, sizeof(struct hda_nid_item), 32);
992 	snd_array_init(&codec->init_pins, sizeof(struct hda_pincfg), 16);
993 	snd_array_init(&codec->driver_pins, sizeof(struct hda_pincfg), 16);
994 	snd_array_init(&codec->cvt_setups, sizeof(struct hda_cvt_setup), 8);
995 	snd_array_init(&codec->spdif_out, sizeof(struct hda_spdif_out), 16);
996 	snd_array_init(&codec->jacktbl, sizeof(struct hda_jack_tbl), 16);
997 	snd_array_init(&codec->verbs, sizeof(struct hda_verb *), 8);
998 	INIT_LIST_HEAD(&codec->conn_list);
999 	INIT_LIST_HEAD(&codec->pcm_list_head);
1000 	refcount_set(&codec->pcm_ref, 1);
1001 	init_waitqueue_head(&codec->remove_sleep);
1002 
1003 	INIT_DELAYED_WORK(&codec->jackpoll_work, hda_jackpoll_work);
1004 	codec->depop_delay = -1;
1005 	codec->fixup_id = HDA_FIXUP_ID_NOT_SET;
1006 
1007 #ifdef CONFIG_PM
1008 	codec->power_jiffies = jiffies;
1009 #endif
1010 
1011 	snd_hda_sysfs_init(codec);
1012 
1013 	if (codec->bus->modelname) {
1014 		codec->modelname = kstrdup(codec->bus->modelname, GFP_KERNEL);
1015 		if (!codec->modelname) {
1016 			err = -ENOMEM;
1017 			goto error;
1018 		}
1019 	}
1020 
1021 	fg = codec->core.afg ? codec->core.afg : codec->core.mfg;
1022 	err = read_widget_caps(codec, fg);
1023 	if (err < 0)
1024 		goto error;
1025 	err = read_pin_defaults(codec);
1026 	if (err < 0)
1027 		goto error;
1028 
1029 	/* power-up all before initialization */
1030 	hda_set_power_state(codec, AC_PWRST_D0);
1031 	codec->core.dev.power.power_state = PMSG_ON;
1032 
1033 	snd_hda_codec_proc_new(codec);
1034 
1035 	snd_hda_create_hwdep(codec);
1036 
1037 	sprintf(component, "HDA:%08x,%08x,%08x", codec->core.vendor_id,
1038 		codec->core.subsystem_id, codec->core.revision_id);
1039 	snd_component_add(card, component);
1040 
1041 	if (snddev_managed) {
1042 		/* ASoC features component management instead */
1043 		err = snd_device_new(card, SNDRV_DEV_CODEC, codec, &dev_ops);
1044 		if (err < 0)
1045 			goto error;
1046 	}
1047 
1048 	/* PM runtime needs to be enabled later after binding codec */
1049 	pm_runtime_forbid(&codec->core.dev);
1050 
1051 	return 0;
1052 
1053  error:
1054 	put_device(hda_codec_dev(codec));
1055 	return err;
1056 }
1057 EXPORT_SYMBOL_GPL(snd_hda_codec_device_new);
1058 
1059 /**
1060  * snd_hda_codec_update_widgets - Refresh widget caps and pin defaults
1061  * @codec: the HDA codec
1062  *
1063  * Forcibly refresh the all widget caps and the init pin configurations of
1064  * the given codec.
1065  */
snd_hda_codec_update_widgets(struct hda_codec * codec)1066 int snd_hda_codec_update_widgets(struct hda_codec *codec)
1067 {
1068 	hda_nid_t fg;
1069 	int err;
1070 
1071 	err = snd_hdac_refresh_widgets(&codec->core);
1072 	if (err < 0)
1073 		return err;
1074 
1075 	/* Assume the function group node does not change,
1076 	 * only the widget nodes may change.
1077 	 */
1078 	kfree(codec->wcaps);
1079 	fg = codec->core.afg ? codec->core.afg : codec->core.mfg;
1080 	err = read_widget_caps(codec, fg);
1081 	if (err < 0)
1082 		return err;
1083 
1084 	snd_array_free(&codec->init_pins);
1085 	err = read_pin_defaults(codec);
1086 
1087 	return err;
1088 }
1089 EXPORT_SYMBOL_GPL(snd_hda_codec_update_widgets);
1090 
1091 /* 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)1092 static void update_pcm_stream_id(struct hda_codec *codec,
1093 				 struct hda_cvt_setup *p, hda_nid_t nid,
1094 				 u32 stream_tag, int channel_id)
1095 {
1096 	unsigned int oldval, newval;
1097 
1098 	if (p->stream_tag != stream_tag || p->channel_id != channel_id) {
1099 		oldval = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_CONV, 0);
1100 		newval = (stream_tag << 4) | channel_id;
1101 		if (oldval != newval)
1102 			snd_hda_codec_write(codec, nid, 0,
1103 					    AC_VERB_SET_CHANNEL_STREAMID,
1104 					    newval);
1105 		p->stream_tag = stream_tag;
1106 		p->channel_id = channel_id;
1107 	}
1108 }
1109 
1110 /* update the format-id if changed */
update_pcm_format(struct hda_codec * codec,struct hda_cvt_setup * p,hda_nid_t nid,int format)1111 static void update_pcm_format(struct hda_codec *codec, struct hda_cvt_setup *p,
1112 			      hda_nid_t nid, int format)
1113 {
1114 	unsigned int oldval;
1115 
1116 	if (p->format_id != format) {
1117 		oldval = snd_hda_codec_read(codec, nid, 0,
1118 					    AC_VERB_GET_STREAM_FORMAT, 0);
1119 		if (oldval != format) {
1120 			msleep(1);
1121 			snd_hda_codec_write(codec, nid, 0,
1122 					    AC_VERB_SET_STREAM_FORMAT,
1123 					    format);
1124 		}
1125 		p->format_id = format;
1126 	}
1127 }
1128 
1129 /**
1130  * snd_hda_codec_setup_stream - set up the codec for streaming
1131  * @codec: the CODEC to set up
1132  * @nid: the NID to set up
1133  * @stream_tag: stream tag to pass, it's between 0x1 and 0xf.
1134  * @channel_id: channel id to pass, zero based.
1135  * @format: stream format.
1136  */
snd_hda_codec_setup_stream(struct hda_codec * codec,hda_nid_t nid,u32 stream_tag,int channel_id,int format)1137 void snd_hda_codec_setup_stream(struct hda_codec *codec, hda_nid_t nid,
1138 				u32 stream_tag,
1139 				int channel_id, int format)
1140 {
1141 	struct hda_codec *c;
1142 	struct hda_cvt_setup *p;
1143 	int type;
1144 	int i;
1145 
1146 	if (!nid)
1147 		return;
1148 
1149 	codec_dbg(codec,
1150 		  "hda_codec_setup_stream: NID=0x%x, stream=0x%x, channel=%d, format=0x%x\n",
1151 		  nid, stream_tag, channel_id, format);
1152 	p = get_hda_cvt_setup(codec, nid);
1153 	if (!p)
1154 		return;
1155 
1156 	if (codec->patch_ops.stream_pm)
1157 		codec->patch_ops.stream_pm(codec, nid, true);
1158 	if (codec->pcm_format_first)
1159 		update_pcm_format(codec, p, nid, format);
1160 	update_pcm_stream_id(codec, p, nid, stream_tag, channel_id);
1161 	if (!codec->pcm_format_first)
1162 		update_pcm_format(codec, p, nid, format);
1163 
1164 	p->active = 1;
1165 	p->dirty = 0;
1166 
1167 	/* make other inactive cvts with the same stream-tag dirty */
1168 	type = get_wcaps_type(get_wcaps(codec, nid));
1169 	list_for_each_codec(c, codec->bus) {
1170 		snd_array_for_each(&c->cvt_setups, i, p) {
1171 			if (!p->active && p->stream_tag == stream_tag &&
1172 			    get_wcaps_type(get_wcaps(c, p->nid)) == type)
1173 				p->dirty = 1;
1174 		}
1175 	}
1176 }
1177 EXPORT_SYMBOL_GPL(snd_hda_codec_setup_stream);
1178 
1179 static void really_cleanup_stream(struct hda_codec *codec,
1180 				  struct hda_cvt_setup *q);
1181 
1182 /**
1183  * __snd_hda_codec_cleanup_stream - clean up the codec for closing
1184  * @codec: the CODEC to clean up
1185  * @nid: the NID to clean up
1186  * @do_now: really clean up the stream instead of clearing the active flag
1187  */
__snd_hda_codec_cleanup_stream(struct hda_codec * codec,hda_nid_t nid,int do_now)1188 void __snd_hda_codec_cleanup_stream(struct hda_codec *codec, hda_nid_t nid,
1189 				    int do_now)
1190 {
1191 	struct hda_cvt_setup *p;
1192 
1193 	if (!nid)
1194 		return;
1195 
1196 	if (codec->no_sticky_stream)
1197 		do_now = 1;
1198 
1199 	codec_dbg(codec, "hda_codec_cleanup_stream: NID=0x%x\n", nid);
1200 	p = get_hda_cvt_setup(codec, nid);
1201 	if (p) {
1202 		/* here we just clear the active flag when do_now isn't set;
1203 		 * actual clean-ups will be done later in
1204 		 * purify_inactive_streams() called from snd_hda_codec_prpapre()
1205 		 */
1206 		if (do_now)
1207 			really_cleanup_stream(codec, p);
1208 		else
1209 			p->active = 0;
1210 	}
1211 }
1212 EXPORT_SYMBOL_GPL(__snd_hda_codec_cleanup_stream);
1213 
really_cleanup_stream(struct hda_codec * codec,struct hda_cvt_setup * q)1214 static void really_cleanup_stream(struct hda_codec *codec,
1215 				  struct hda_cvt_setup *q)
1216 {
1217 	hda_nid_t nid = q->nid;
1218 	if (q->stream_tag || q->channel_id)
1219 		snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_CHANNEL_STREAMID, 0);
1220 	if (q->format_id)
1221 		snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_STREAM_FORMAT, 0
1222 );
1223 	memset(q, 0, sizeof(*q));
1224 	q->nid = nid;
1225 	if (codec->patch_ops.stream_pm)
1226 		codec->patch_ops.stream_pm(codec, nid, false);
1227 }
1228 
1229 /* clean up the all conflicting obsolete streams */
purify_inactive_streams(struct hda_codec * codec)1230 static void purify_inactive_streams(struct hda_codec *codec)
1231 {
1232 	struct hda_codec *c;
1233 	struct hda_cvt_setup *p;
1234 	int i;
1235 
1236 	list_for_each_codec(c, codec->bus) {
1237 		snd_array_for_each(&c->cvt_setups, i, p) {
1238 			if (p->dirty)
1239 				really_cleanup_stream(c, p);
1240 		}
1241 	}
1242 }
1243 
1244 #ifdef CONFIG_PM
1245 /* clean up all streams; called from suspend */
hda_cleanup_all_streams(struct hda_codec * codec)1246 static void hda_cleanup_all_streams(struct hda_codec *codec)
1247 {
1248 	struct hda_cvt_setup *p;
1249 	int i;
1250 
1251 	snd_array_for_each(&codec->cvt_setups, i, p) {
1252 		if (p->stream_tag)
1253 			really_cleanup_stream(codec, p);
1254 	}
1255 }
1256 #endif
1257 
1258 /*
1259  * amp access functions
1260  */
1261 
1262 /**
1263  * query_amp_caps - query AMP capabilities
1264  * @codec: the HD-auio codec
1265  * @nid: the NID to query
1266  * @direction: either #HDA_INPUT or #HDA_OUTPUT
1267  *
1268  * Query AMP capabilities for the given widget and direction.
1269  * Returns the obtained capability bits.
1270  *
1271  * When cap bits have been already read, this doesn't read again but
1272  * returns the cached value.
1273  */
query_amp_caps(struct hda_codec * codec,hda_nid_t nid,int direction)1274 u32 query_amp_caps(struct hda_codec *codec, hda_nid_t nid, int direction)
1275 {
1276 	if (!(get_wcaps(codec, nid) & AC_WCAP_AMP_OVRD))
1277 		nid = codec->core.afg;
1278 	return snd_hda_param_read(codec, nid,
1279 				  direction == HDA_OUTPUT ?
1280 				  AC_PAR_AMP_OUT_CAP : AC_PAR_AMP_IN_CAP);
1281 }
1282 EXPORT_SYMBOL_GPL(query_amp_caps);
1283 
1284 /**
1285  * snd_hda_check_amp_caps - query AMP capabilities
1286  * @codec: the HD-audio codec
1287  * @nid: the NID to query
1288  * @dir: either #HDA_INPUT or #HDA_OUTPUT
1289  * @bits: bit mask to check the result
1290  *
1291  * Check whether the widget has the given amp capability for the direction.
1292  */
snd_hda_check_amp_caps(struct hda_codec * codec,hda_nid_t nid,int dir,unsigned int bits)1293 bool snd_hda_check_amp_caps(struct hda_codec *codec, hda_nid_t nid,
1294 			   int dir, unsigned int bits)
1295 {
1296 	if (!nid)
1297 		return false;
1298 	if (get_wcaps(codec, nid) & (1 << (dir + 1)))
1299 		if (query_amp_caps(codec, nid, dir) & bits)
1300 			return true;
1301 	return false;
1302 }
1303 EXPORT_SYMBOL_GPL(snd_hda_check_amp_caps);
1304 
1305 /**
1306  * snd_hda_override_amp_caps - Override the AMP capabilities
1307  * @codec: the CODEC to clean up
1308  * @nid: the NID to clean up
1309  * @dir: either #HDA_INPUT or #HDA_OUTPUT
1310  * @caps: the capability bits to set
1311  *
1312  * Override the cached AMP caps bits value by the given one.
1313  * This function is useful if the driver needs to adjust the AMP ranges,
1314  * e.g. limit to 0dB, etc.
1315  *
1316  * Returns zero if successful or a negative error code.
1317  */
snd_hda_override_amp_caps(struct hda_codec * codec,hda_nid_t nid,int dir,unsigned int caps)1318 int snd_hda_override_amp_caps(struct hda_codec *codec, hda_nid_t nid, int dir,
1319 			      unsigned int caps)
1320 {
1321 	unsigned int parm;
1322 
1323 	snd_hda_override_wcaps(codec, nid,
1324 			       get_wcaps(codec, nid) | AC_WCAP_AMP_OVRD);
1325 	parm = dir == HDA_OUTPUT ? AC_PAR_AMP_OUT_CAP : AC_PAR_AMP_IN_CAP;
1326 	return snd_hdac_override_parm(&codec->core, nid, parm, caps);
1327 }
1328 EXPORT_SYMBOL_GPL(snd_hda_override_amp_caps);
1329 
encode_amp(struct hda_codec * codec,hda_nid_t nid,int ch,int dir,int idx)1330 static unsigned int encode_amp(struct hda_codec *codec, hda_nid_t nid,
1331 			       int ch, int dir, int idx)
1332 {
1333 	unsigned int cmd = snd_hdac_regmap_encode_amp(nid, ch, dir, idx);
1334 
1335 	/* enable fake mute if no h/w mute but min=mute */
1336 	if ((query_amp_caps(codec, nid, dir) &
1337 	     (AC_AMPCAP_MUTE | AC_AMPCAP_MIN_MUTE)) == AC_AMPCAP_MIN_MUTE)
1338 		cmd |= AC_AMP_FAKE_MUTE;
1339 	return cmd;
1340 }
1341 
1342 /**
1343  * snd_hda_codec_amp_update - update the AMP mono value
1344  * @codec: HD-audio codec
1345  * @nid: NID to read the AMP value
1346  * @ch: channel to update (0 or 1)
1347  * @dir: #HDA_INPUT or #HDA_OUTPUT
1348  * @idx: the index value (only for input direction)
1349  * @mask: bit mask to set
1350  * @val: the bits value to set
1351  *
1352  * Update the AMP values for the given channel, direction and index.
1353  */
snd_hda_codec_amp_update(struct hda_codec * codec,hda_nid_t nid,int ch,int dir,int idx,int mask,int val)1354 int snd_hda_codec_amp_update(struct hda_codec *codec, hda_nid_t nid,
1355 			     int ch, int dir, int idx, int mask, int val)
1356 {
1357 	unsigned int cmd = encode_amp(codec, nid, ch, dir, idx);
1358 
1359 	return snd_hdac_regmap_update_raw(&codec->core, cmd, mask, val);
1360 }
1361 EXPORT_SYMBOL_GPL(snd_hda_codec_amp_update);
1362 
1363 /**
1364  * snd_hda_codec_amp_stereo - update the AMP stereo values
1365  * @codec: HD-audio codec
1366  * @nid: NID to read the AMP value
1367  * @direction: #HDA_INPUT or #HDA_OUTPUT
1368  * @idx: the index value (only for input direction)
1369  * @mask: bit mask to set
1370  * @val: the bits value to set
1371  *
1372  * Update the AMP values like snd_hda_codec_amp_update(), but for a
1373  * stereo widget with the same mask and value.
1374  */
snd_hda_codec_amp_stereo(struct hda_codec * codec,hda_nid_t nid,int direction,int idx,int mask,int val)1375 int snd_hda_codec_amp_stereo(struct hda_codec *codec, hda_nid_t nid,
1376 			     int direction, int idx, int mask, int val)
1377 {
1378 	int ch, ret = 0;
1379 
1380 	if (snd_BUG_ON(mask & ~0xff))
1381 		mask &= 0xff;
1382 	for (ch = 0; ch < 2; ch++)
1383 		ret |= snd_hda_codec_amp_update(codec, nid, ch, direction,
1384 						idx, mask, val);
1385 	return ret;
1386 }
1387 EXPORT_SYMBOL_GPL(snd_hda_codec_amp_stereo);
1388 
1389 /**
1390  * snd_hda_codec_amp_init - initialize the AMP value
1391  * @codec: the HDA codec
1392  * @nid: NID to read the AMP value
1393  * @ch: channel (left=0 or right=1)
1394  * @dir: #HDA_INPUT or #HDA_OUTPUT
1395  * @idx: the index value (only for input direction)
1396  * @mask: bit mask to set
1397  * @val: the bits value to set
1398  *
1399  * Works like snd_hda_codec_amp_update() but it writes the value only at
1400  * the first access.  If the amp was already initialized / updated beforehand,
1401  * this does nothing.
1402  */
snd_hda_codec_amp_init(struct hda_codec * codec,hda_nid_t nid,int ch,int dir,int idx,int mask,int val)1403 int snd_hda_codec_amp_init(struct hda_codec *codec, hda_nid_t nid, int ch,
1404 			   int dir, int idx, int mask, int val)
1405 {
1406 	unsigned int cmd = encode_amp(codec, nid, ch, dir, idx);
1407 
1408 	if (!codec->core.regmap)
1409 		return -EINVAL;
1410 	return snd_hdac_regmap_update_raw_once(&codec->core, cmd, mask, val);
1411 }
1412 EXPORT_SYMBOL_GPL(snd_hda_codec_amp_init);
1413 
1414 /**
1415  * snd_hda_codec_amp_init_stereo - initialize the stereo AMP value
1416  * @codec: the HDA codec
1417  * @nid: NID to read the AMP value
1418  * @dir: #HDA_INPUT or #HDA_OUTPUT
1419  * @idx: the index value (only for input direction)
1420  * @mask: bit mask to set
1421  * @val: the bits value to set
1422  *
1423  * Call snd_hda_codec_amp_init() for both stereo channels.
1424  */
snd_hda_codec_amp_init_stereo(struct hda_codec * codec,hda_nid_t nid,int dir,int idx,int mask,int val)1425 int snd_hda_codec_amp_init_stereo(struct hda_codec *codec, hda_nid_t nid,
1426 				  int dir, int idx, int mask, int val)
1427 {
1428 	int ch, ret = 0;
1429 
1430 	if (snd_BUG_ON(mask & ~0xff))
1431 		mask &= 0xff;
1432 	for (ch = 0; ch < 2; ch++)
1433 		ret |= snd_hda_codec_amp_init(codec, nid, ch, dir,
1434 					      idx, mask, val);
1435 	return ret;
1436 }
1437 EXPORT_SYMBOL_GPL(snd_hda_codec_amp_init_stereo);
1438 
get_amp_max_value(struct hda_codec * codec,hda_nid_t nid,int dir,unsigned int ofs)1439 static u32 get_amp_max_value(struct hda_codec *codec, hda_nid_t nid, int dir,
1440 			     unsigned int ofs)
1441 {
1442 	u32 caps = query_amp_caps(codec, nid, dir);
1443 	/* get num steps */
1444 	caps = (caps & AC_AMPCAP_NUM_STEPS) >> AC_AMPCAP_NUM_STEPS_SHIFT;
1445 	if (ofs < caps)
1446 		caps -= ofs;
1447 	return caps;
1448 }
1449 
1450 /**
1451  * snd_hda_mixer_amp_volume_info - Info callback for a standard AMP mixer
1452  * @kcontrol: referred ctl element
1453  * @uinfo: pointer to get/store the data
1454  *
1455  * The control element is supposed to have the private_value field
1456  * set up via HDA_COMPOSE_AMP_VAL*() or related macros.
1457  */
snd_hda_mixer_amp_volume_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)1458 int snd_hda_mixer_amp_volume_info(struct snd_kcontrol *kcontrol,
1459 				  struct snd_ctl_elem_info *uinfo)
1460 {
1461 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
1462 	u16 nid = get_amp_nid(kcontrol);
1463 	u8 chs = get_amp_channels(kcontrol);
1464 	int dir = get_amp_direction(kcontrol);
1465 	unsigned int ofs = get_amp_offset(kcontrol);
1466 
1467 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1468 	uinfo->count = chs == 3 ? 2 : 1;
1469 	uinfo->value.integer.min = 0;
1470 	uinfo->value.integer.max = get_amp_max_value(codec, nid, dir, ofs);
1471 	if (!uinfo->value.integer.max) {
1472 		codec_warn(codec,
1473 			   "num_steps = 0 for NID=0x%x (ctl = %s)\n",
1474 			   nid, kcontrol->id.name);
1475 		return -EINVAL;
1476 	}
1477 	return 0;
1478 }
1479 EXPORT_SYMBOL_GPL(snd_hda_mixer_amp_volume_info);
1480 
1481 
1482 static inline unsigned int
read_amp_value(struct hda_codec * codec,hda_nid_t nid,int ch,int dir,int idx,unsigned int ofs)1483 read_amp_value(struct hda_codec *codec, hda_nid_t nid,
1484 	       int ch, int dir, int idx, unsigned int ofs)
1485 {
1486 	unsigned int val;
1487 	val = snd_hda_codec_amp_read(codec, nid, ch, dir, idx);
1488 	val &= HDA_AMP_VOLMASK;
1489 	if (val >= ofs)
1490 		val -= ofs;
1491 	else
1492 		val = 0;
1493 	return val;
1494 }
1495 
1496 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)1497 update_amp_value(struct hda_codec *codec, hda_nid_t nid,
1498 		 int ch, int dir, int idx, unsigned int ofs,
1499 		 unsigned int val)
1500 {
1501 	unsigned int maxval;
1502 
1503 	if (val > 0)
1504 		val += ofs;
1505 	/* ofs = 0: raw max value */
1506 	maxval = get_amp_max_value(codec, nid, dir, 0);
1507 	if (val > maxval)
1508 		val = maxval;
1509 	return snd_hda_codec_amp_update(codec, nid, ch, dir, idx,
1510 					HDA_AMP_VOLMASK, val);
1511 }
1512 
1513 /**
1514  * snd_hda_mixer_amp_volume_get - Get callback for a standard AMP mixer volume
1515  * @kcontrol: ctl element
1516  * @ucontrol: pointer to get/store the data
1517  *
1518  * The control element is supposed to have the private_value field
1519  * set up via HDA_COMPOSE_AMP_VAL*() or related macros.
1520  */
snd_hda_mixer_amp_volume_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1521 int snd_hda_mixer_amp_volume_get(struct snd_kcontrol *kcontrol,
1522 				 struct snd_ctl_elem_value *ucontrol)
1523 {
1524 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
1525 	hda_nid_t nid = get_amp_nid(kcontrol);
1526 	int chs = get_amp_channels(kcontrol);
1527 	int dir = get_amp_direction(kcontrol);
1528 	int idx = get_amp_index(kcontrol);
1529 	unsigned int ofs = get_amp_offset(kcontrol);
1530 	long *valp = ucontrol->value.integer.value;
1531 
1532 	if (chs & 1)
1533 		*valp++ = read_amp_value(codec, nid, 0, dir, idx, ofs);
1534 	if (chs & 2)
1535 		*valp = read_amp_value(codec, nid, 1, dir, idx, ofs);
1536 	return 0;
1537 }
1538 EXPORT_SYMBOL_GPL(snd_hda_mixer_amp_volume_get);
1539 
1540 /**
1541  * snd_hda_mixer_amp_volume_put - Put callback for a standard AMP mixer volume
1542  * @kcontrol: ctl element
1543  * @ucontrol: pointer to get/store the data
1544  *
1545  * The control element is supposed to have the private_value field
1546  * set up via HDA_COMPOSE_AMP_VAL*() or related macros.
1547  */
snd_hda_mixer_amp_volume_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1548 int snd_hda_mixer_amp_volume_put(struct snd_kcontrol *kcontrol,
1549 				 struct snd_ctl_elem_value *ucontrol)
1550 {
1551 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
1552 	hda_nid_t nid = get_amp_nid(kcontrol);
1553 	int chs = get_amp_channels(kcontrol);
1554 	int dir = get_amp_direction(kcontrol);
1555 	int idx = get_amp_index(kcontrol);
1556 	unsigned int ofs = get_amp_offset(kcontrol);
1557 	long *valp = ucontrol->value.integer.value;
1558 	int change = 0;
1559 
1560 	if (chs & 1) {
1561 		change = update_amp_value(codec, nid, 0, dir, idx, ofs, *valp);
1562 		valp++;
1563 	}
1564 	if (chs & 2)
1565 		change |= update_amp_value(codec, nid, 1, dir, idx, ofs, *valp);
1566 	return change;
1567 }
1568 EXPORT_SYMBOL_GPL(snd_hda_mixer_amp_volume_put);
1569 
1570 /* inquiry the amp caps and convert to TLV */
get_ctl_amp_tlv(struct snd_kcontrol * kcontrol,unsigned int * tlv)1571 static void get_ctl_amp_tlv(struct snd_kcontrol *kcontrol, unsigned int *tlv)
1572 {
1573 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
1574 	hda_nid_t nid = get_amp_nid(kcontrol);
1575 	int dir = get_amp_direction(kcontrol);
1576 	unsigned int ofs = get_amp_offset(kcontrol);
1577 	bool min_mute = get_amp_min_mute(kcontrol);
1578 	u32 caps, val1, val2;
1579 
1580 	caps = query_amp_caps(codec, nid, dir);
1581 	val2 = (caps & AC_AMPCAP_STEP_SIZE) >> AC_AMPCAP_STEP_SIZE_SHIFT;
1582 	val2 = (val2 + 1) * 25;
1583 	val1 = -((caps & AC_AMPCAP_OFFSET) >> AC_AMPCAP_OFFSET_SHIFT);
1584 	val1 += ofs;
1585 	val1 = ((int)val1) * ((int)val2);
1586 	if (min_mute || (caps & AC_AMPCAP_MIN_MUTE))
1587 		val2 |= TLV_DB_SCALE_MUTE;
1588 	tlv[SNDRV_CTL_TLVO_TYPE] = SNDRV_CTL_TLVT_DB_SCALE;
1589 	tlv[SNDRV_CTL_TLVO_LEN] = 2 * sizeof(unsigned int);
1590 	tlv[SNDRV_CTL_TLVO_DB_SCALE_MIN] = val1;
1591 	tlv[SNDRV_CTL_TLVO_DB_SCALE_MUTE_AND_STEP] = val2;
1592 }
1593 
1594 /**
1595  * snd_hda_mixer_amp_tlv - TLV callback for a standard AMP mixer volume
1596  * @kcontrol: ctl element
1597  * @op_flag: operation flag
1598  * @size: byte size of input TLV
1599  * @_tlv: TLV data
1600  *
1601  * The control element is supposed to have the private_value field
1602  * set up via HDA_COMPOSE_AMP_VAL*() or related macros.
1603  */
snd_hda_mixer_amp_tlv(struct snd_kcontrol * kcontrol,int op_flag,unsigned int size,unsigned int __user * _tlv)1604 int snd_hda_mixer_amp_tlv(struct snd_kcontrol *kcontrol, int op_flag,
1605 			  unsigned int size, unsigned int __user *_tlv)
1606 {
1607 	unsigned int tlv[4];
1608 
1609 	if (size < 4 * sizeof(unsigned int))
1610 		return -ENOMEM;
1611 	get_ctl_amp_tlv(kcontrol, tlv);
1612 	if (copy_to_user(_tlv, tlv, sizeof(tlv)))
1613 		return -EFAULT;
1614 	return 0;
1615 }
1616 EXPORT_SYMBOL_GPL(snd_hda_mixer_amp_tlv);
1617 
1618 /**
1619  * snd_hda_set_vmaster_tlv - Set TLV for a virtual master control
1620  * @codec: HD-audio codec
1621  * @nid: NID of a reference widget
1622  * @dir: #HDA_INPUT or #HDA_OUTPUT
1623  * @tlv: TLV data to be stored, at least 4 elements
1624  *
1625  * Set (static) TLV data for a virtual master volume using the AMP caps
1626  * obtained from the reference NID.
1627  * The volume range is recalculated as if the max volume is 0dB.
1628  */
snd_hda_set_vmaster_tlv(struct hda_codec * codec,hda_nid_t nid,int dir,unsigned int * tlv)1629 void snd_hda_set_vmaster_tlv(struct hda_codec *codec, hda_nid_t nid, int dir,
1630 			     unsigned int *tlv)
1631 {
1632 	u32 caps;
1633 	int nums, step;
1634 
1635 	caps = query_amp_caps(codec, nid, dir);
1636 	nums = (caps & AC_AMPCAP_NUM_STEPS) >> AC_AMPCAP_NUM_STEPS_SHIFT;
1637 	step = (caps & AC_AMPCAP_STEP_SIZE) >> AC_AMPCAP_STEP_SIZE_SHIFT;
1638 	step = (step + 1) * 25;
1639 	tlv[SNDRV_CTL_TLVO_TYPE] = SNDRV_CTL_TLVT_DB_SCALE;
1640 	tlv[SNDRV_CTL_TLVO_LEN] = 2 * sizeof(unsigned int);
1641 	tlv[SNDRV_CTL_TLVO_DB_SCALE_MIN] = -nums * step;
1642 	tlv[SNDRV_CTL_TLVO_DB_SCALE_MUTE_AND_STEP] = step;
1643 }
1644 EXPORT_SYMBOL_GPL(snd_hda_set_vmaster_tlv);
1645 
1646 /* find a mixer control element with the given name */
1647 static struct snd_kcontrol *
find_mixer_ctl(struct hda_codec * codec,const char * name,int dev,int idx)1648 find_mixer_ctl(struct hda_codec *codec, const char *name, int dev, int idx)
1649 {
1650 	struct snd_ctl_elem_id id;
1651 	memset(&id, 0, sizeof(id));
1652 	id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
1653 	id.device = dev;
1654 	id.index = idx;
1655 	if (snd_BUG_ON(strlen(name) >= sizeof(id.name)))
1656 		return NULL;
1657 	strcpy(id.name, name);
1658 	return snd_ctl_find_id(codec->card, &id);
1659 }
1660 
1661 /**
1662  * snd_hda_find_mixer_ctl - Find a mixer control element with the given name
1663  * @codec: HD-audio codec
1664  * @name: ctl id name string
1665  *
1666  * Get the control element with the given id string and IFACE_MIXER.
1667  */
snd_hda_find_mixer_ctl(struct hda_codec * codec,const char * name)1668 struct snd_kcontrol *snd_hda_find_mixer_ctl(struct hda_codec *codec,
1669 					    const char *name)
1670 {
1671 	return find_mixer_ctl(codec, name, 0, 0);
1672 }
1673 EXPORT_SYMBOL_GPL(snd_hda_find_mixer_ctl);
1674 
find_empty_mixer_ctl_idx(struct hda_codec * codec,const char * name,int start_idx)1675 static int find_empty_mixer_ctl_idx(struct hda_codec *codec, const char *name,
1676 				    int start_idx)
1677 {
1678 	int i, idx;
1679 	/* 16 ctlrs should be large enough */
1680 	for (i = 0, idx = start_idx; i < 16; i++, idx++) {
1681 		if (!find_mixer_ctl(codec, name, 0, idx))
1682 			return idx;
1683 	}
1684 	return -EBUSY;
1685 }
1686 
1687 /**
1688  * snd_hda_ctl_add - Add a control element and assign to the codec
1689  * @codec: HD-audio codec
1690  * @nid: corresponding NID (optional)
1691  * @kctl: the control element to assign
1692  *
1693  * Add the given control element to an array inside the codec instance.
1694  * All control elements belonging to a codec are supposed to be added
1695  * by this function so that a proper clean-up works at the free or
1696  * reconfiguration time.
1697  *
1698  * If non-zero @nid is passed, the NID is assigned to the control element.
1699  * The assignment is shown in the codec proc file.
1700  *
1701  * snd_hda_ctl_add() checks the control subdev id field whether
1702  * #HDA_SUBDEV_NID_FLAG bit is set.  If set (and @nid is zero), the lower
1703  * bits value is taken as the NID to assign. The #HDA_NID_ITEM_AMP bit
1704  * specifies if kctl->private_value is a HDA amplifier value.
1705  */
snd_hda_ctl_add(struct hda_codec * codec,hda_nid_t nid,struct snd_kcontrol * kctl)1706 int snd_hda_ctl_add(struct hda_codec *codec, hda_nid_t nid,
1707 		    struct snd_kcontrol *kctl)
1708 {
1709 	int err;
1710 	unsigned short flags = 0;
1711 	struct hda_nid_item *item;
1712 
1713 	if (kctl->id.subdevice & HDA_SUBDEV_AMP_FLAG) {
1714 		flags |= HDA_NID_ITEM_AMP;
1715 		if (nid == 0)
1716 			nid = get_amp_nid_(kctl->private_value);
1717 	}
1718 	if ((kctl->id.subdevice & HDA_SUBDEV_NID_FLAG) != 0 && nid == 0)
1719 		nid = kctl->id.subdevice & 0xffff;
1720 	if (kctl->id.subdevice & (HDA_SUBDEV_NID_FLAG|HDA_SUBDEV_AMP_FLAG))
1721 		kctl->id.subdevice = 0;
1722 	err = snd_ctl_add(codec->card, kctl);
1723 	if (err < 0)
1724 		return err;
1725 	item = snd_array_new(&codec->mixers);
1726 	if (!item)
1727 		return -ENOMEM;
1728 	item->kctl = kctl;
1729 	item->nid = nid;
1730 	item->flags = flags;
1731 	return 0;
1732 }
1733 EXPORT_SYMBOL_GPL(snd_hda_ctl_add);
1734 
1735 /**
1736  * snd_hda_add_nid - Assign a NID to a control element
1737  * @codec: HD-audio codec
1738  * @nid: corresponding NID (optional)
1739  * @kctl: the control element to assign
1740  * @index: index to kctl
1741  *
1742  * Add the given control element to an array inside the codec instance.
1743  * This function is used when #snd_hda_ctl_add cannot be used for 1:1
1744  * NID:KCTL mapping - for example "Capture Source" selector.
1745  */
snd_hda_add_nid(struct hda_codec * codec,struct snd_kcontrol * kctl,unsigned int index,hda_nid_t nid)1746 int snd_hda_add_nid(struct hda_codec *codec, struct snd_kcontrol *kctl,
1747 		    unsigned int index, hda_nid_t nid)
1748 {
1749 	struct hda_nid_item *item;
1750 
1751 	if (nid > 0) {
1752 		item = snd_array_new(&codec->nids);
1753 		if (!item)
1754 			return -ENOMEM;
1755 		item->kctl = kctl;
1756 		item->index = index;
1757 		item->nid = nid;
1758 		return 0;
1759 	}
1760 	codec_err(codec, "no NID for mapping control %s:%d:%d\n",
1761 		  kctl->id.name, kctl->id.index, index);
1762 	return -EINVAL;
1763 }
1764 EXPORT_SYMBOL_GPL(snd_hda_add_nid);
1765 
1766 /**
1767  * snd_hda_ctls_clear - Clear all controls assigned to the given codec
1768  * @codec: HD-audio codec
1769  */
snd_hda_ctls_clear(struct hda_codec * codec)1770 void snd_hda_ctls_clear(struct hda_codec *codec)
1771 {
1772 	int i;
1773 	struct hda_nid_item *items = codec->mixers.list;
1774 
1775 	down_write(&codec->card->controls_rwsem);
1776 	for (i = 0; i < codec->mixers.used; i++)
1777 		snd_ctl_remove(codec->card, items[i].kctl);
1778 	up_write(&codec->card->controls_rwsem);
1779 	snd_array_free(&codec->mixers);
1780 	snd_array_free(&codec->nids);
1781 }
1782 
1783 /**
1784  * snd_hda_lock_devices - pseudo device locking
1785  * @bus: the BUS
1786  *
1787  * toggle card->shutdown to allow/disallow the device access (as a hack)
1788  */
snd_hda_lock_devices(struct hda_bus * bus)1789 int snd_hda_lock_devices(struct hda_bus *bus)
1790 {
1791 	struct snd_card *card = bus->card;
1792 	struct hda_codec *codec;
1793 
1794 	spin_lock(&card->files_lock);
1795 	if (card->shutdown)
1796 		goto err_unlock;
1797 	card->shutdown = 1;
1798 	if (!list_empty(&card->ctl_files))
1799 		goto err_clear;
1800 
1801 	list_for_each_codec(codec, bus) {
1802 		struct hda_pcm *cpcm;
1803 		list_for_each_entry(cpcm, &codec->pcm_list_head, list) {
1804 			if (!cpcm->pcm)
1805 				continue;
1806 			if (cpcm->pcm->streams[0].substream_opened ||
1807 			    cpcm->pcm->streams[1].substream_opened)
1808 				goto err_clear;
1809 		}
1810 	}
1811 	spin_unlock(&card->files_lock);
1812 	return 0;
1813 
1814  err_clear:
1815 	card->shutdown = 0;
1816  err_unlock:
1817 	spin_unlock(&card->files_lock);
1818 	return -EINVAL;
1819 }
1820 EXPORT_SYMBOL_GPL(snd_hda_lock_devices);
1821 
1822 /**
1823  * snd_hda_unlock_devices - pseudo device unlocking
1824  * @bus: the BUS
1825  */
snd_hda_unlock_devices(struct hda_bus * bus)1826 void snd_hda_unlock_devices(struct hda_bus *bus)
1827 {
1828 	struct snd_card *card = bus->card;
1829 
1830 	spin_lock(&card->files_lock);
1831 	card->shutdown = 0;
1832 	spin_unlock(&card->files_lock);
1833 }
1834 EXPORT_SYMBOL_GPL(snd_hda_unlock_devices);
1835 
1836 /**
1837  * snd_hda_codec_reset - Clear all objects assigned to the codec
1838  * @codec: HD-audio codec
1839  *
1840  * This frees the all PCM and control elements assigned to the codec, and
1841  * clears the caches and restores the pin default configurations.
1842  *
1843  * When a device is being used, it returns -EBSY.  If successfully freed,
1844  * returns zero.
1845  */
snd_hda_codec_reset(struct hda_codec * codec)1846 int snd_hda_codec_reset(struct hda_codec *codec)
1847 {
1848 	struct hda_bus *bus = codec->bus;
1849 
1850 	if (snd_hda_lock_devices(bus) < 0)
1851 		return -EBUSY;
1852 
1853 	/* OK, let it free */
1854 	device_release_driver(hda_codec_dev(codec));
1855 
1856 	/* allow device access again */
1857 	snd_hda_unlock_devices(bus);
1858 	return 0;
1859 }
1860 
1861 typedef int (*map_follower_func_t)(struct hda_codec *, void *, struct snd_kcontrol *);
1862 
1863 /* 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)1864 static int map_followers(struct hda_codec *codec, const char * const *followers,
1865 			 const char *suffix, map_follower_func_t func, void *data)
1866 {
1867 	struct hda_nid_item *items;
1868 	const char * const *s;
1869 	int i, err;
1870 
1871 	items = codec->mixers.list;
1872 	for (i = 0; i < codec->mixers.used; i++) {
1873 		struct snd_kcontrol *sctl = items[i].kctl;
1874 		if (!sctl || sctl->id.iface != SNDRV_CTL_ELEM_IFACE_MIXER)
1875 			continue;
1876 		for (s = followers; *s; s++) {
1877 			char tmpname[sizeof(sctl->id.name)];
1878 			const char *name = *s;
1879 			if (suffix) {
1880 				snprintf(tmpname, sizeof(tmpname), "%s %s",
1881 					 name, suffix);
1882 				name = tmpname;
1883 			}
1884 			if (!strcmp(sctl->id.name, name)) {
1885 				err = func(codec, data, sctl);
1886 				if (err)
1887 					return err;
1888 				break;
1889 			}
1890 		}
1891 	}
1892 	return 0;
1893 }
1894 
check_follower_present(struct hda_codec * codec,void * data,struct snd_kcontrol * sctl)1895 static int check_follower_present(struct hda_codec *codec,
1896 				  void *data, struct snd_kcontrol *sctl)
1897 {
1898 	return 1;
1899 }
1900 
1901 /* call kctl->put with the given value(s) */
put_kctl_with_value(struct snd_kcontrol * kctl,int val)1902 static int put_kctl_with_value(struct snd_kcontrol *kctl, int val)
1903 {
1904 	struct snd_ctl_elem_value *ucontrol;
1905 	ucontrol = kzalloc(sizeof(*ucontrol), GFP_KERNEL);
1906 	if (!ucontrol)
1907 		return -ENOMEM;
1908 	ucontrol->value.integer.value[0] = val;
1909 	ucontrol->value.integer.value[1] = val;
1910 	kctl->put(kctl, ucontrol);
1911 	kfree(ucontrol);
1912 	return 0;
1913 }
1914 
1915 struct follower_init_arg {
1916 	struct hda_codec *codec;
1917 	int step;
1918 };
1919 
1920 /* 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)1921 static int init_follower_0dB(struct snd_kcontrol *follower,
1922 			     struct snd_kcontrol *kctl,
1923 			     void *_arg)
1924 {
1925 	struct follower_init_arg *arg = _arg;
1926 	int _tlv[4];
1927 	const int *tlv = NULL;
1928 	int step;
1929 	int val;
1930 
1931 	if (kctl->vd[0].access & SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK) {
1932 		if (kctl->tlv.c != snd_hda_mixer_amp_tlv) {
1933 			codec_err(arg->codec,
1934 				  "Unexpected TLV callback for follower %s:%d\n",
1935 				  kctl->id.name, kctl->id.index);
1936 			return 0; /* ignore */
1937 		}
1938 		get_ctl_amp_tlv(kctl, _tlv);
1939 		tlv = _tlv;
1940 	} else if (kctl->vd[0].access & SNDRV_CTL_ELEM_ACCESS_TLV_READ)
1941 		tlv = kctl->tlv.p;
1942 
1943 	if (!tlv || tlv[SNDRV_CTL_TLVO_TYPE] != SNDRV_CTL_TLVT_DB_SCALE)
1944 		return 0;
1945 
1946 	step = tlv[SNDRV_CTL_TLVO_DB_SCALE_MUTE_AND_STEP];
1947 	step &= ~TLV_DB_SCALE_MUTE;
1948 	if (!step)
1949 		return 0;
1950 	if (arg->step && arg->step != step) {
1951 		codec_err(arg->codec,
1952 			  "Mismatching dB step for vmaster follower (%d!=%d)\n",
1953 			  arg->step, step);
1954 		return 0;
1955 	}
1956 
1957 	arg->step = step;
1958 	val = -tlv[SNDRV_CTL_TLVO_DB_SCALE_MIN] / step;
1959 	if (val > 0) {
1960 		put_kctl_with_value(follower, val);
1961 		return val;
1962 	}
1963 
1964 	return 0;
1965 }
1966 
1967 /* unmute the follower via snd_ctl_apply_vmaster_followers() */
init_follower_unmute(struct snd_kcontrol * follower,struct snd_kcontrol * kctl,void * _arg)1968 static int init_follower_unmute(struct snd_kcontrol *follower,
1969 				struct snd_kcontrol *kctl,
1970 				void *_arg)
1971 {
1972 	return put_kctl_with_value(follower, 1);
1973 }
1974 
add_follower(struct hda_codec * codec,void * data,struct snd_kcontrol * follower)1975 static int add_follower(struct hda_codec *codec,
1976 			void *data, struct snd_kcontrol *follower)
1977 {
1978 	return snd_ctl_add_follower(data, follower);
1979 }
1980 
1981 /**
1982  * __snd_hda_add_vmaster - create a virtual master control and add followers
1983  * @codec: HD-audio codec
1984  * @name: vmaster control name
1985  * @tlv: TLV data (optional)
1986  * @followers: follower control names (optional)
1987  * @suffix: suffix string to each follower name (optional)
1988  * @init_follower_vol: initialize followers to unmute/0dB
1989  * @access: kcontrol access rights
1990  * @ctl_ret: store the vmaster kcontrol in return
1991  *
1992  * Create a virtual master control with the given name.  The TLV data
1993  * must be either NULL or a valid data.
1994  *
1995  * @followers is a NULL-terminated array of strings, each of which is a
1996  * follower control name.  All controls with these names are assigned to
1997  * the new virtual master control.
1998  *
1999  * This function returns zero if successful or a negative error code.
2000  */
__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)2001 int __snd_hda_add_vmaster(struct hda_codec *codec, char *name,
2002 			  unsigned int *tlv, const char * const *followers,
2003 			  const char *suffix, bool init_follower_vol,
2004 			  unsigned int access, struct snd_kcontrol **ctl_ret)
2005 {
2006 	struct snd_kcontrol *kctl;
2007 	int err;
2008 
2009 	if (ctl_ret)
2010 		*ctl_ret = NULL;
2011 
2012 	err = map_followers(codec, followers, suffix, check_follower_present, NULL);
2013 	if (err != 1) {
2014 		codec_dbg(codec, "No follower found for %s\n", name);
2015 		return 0;
2016 	}
2017 	kctl = snd_ctl_make_virtual_master(name, tlv);
2018 	if (!kctl)
2019 		return -ENOMEM;
2020 	kctl->vd[0].access |= access;
2021 	err = snd_hda_ctl_add(codec, 0, kctl);
2022 	if (err < 0)
2023 		return err;
2024 
2025 	err = map_followers(codec, followers, suffix, add_follower, kctl);
2026 	if (err < 0)
2027 		return err;
2028 
2029 	/* init with master mute & zero volume */
2030 	put_kctl_with_value(kctl, 0);
2031 	if (init_follower_vol) {
2032 		struct follower_init_arg arg = {
2033 			.codec = codec,
2034 			.step = 0,
2035 		};
2036 		snd_ctl_apply_vmaster_followers(kctl,
2037 						tlv ? init_follower_0dB : init_follower_unmute,
2038 						&arg);
2039 	}
2040 
2041 	if (ctl_ret)
2042 		*ctl_ret = kctl;
2043 	return 0;
2044 }
2045 EXPORT_SYMBOL_GPL(__snd_hda_add_vmaster);
2046 
2047 /* meta hook to call each driver's vmaster hook */
vmaster_hook(void * private_data,int enabled)2048 static void vmaster_hook(void *private_data, int enabled)
2049 {
2050 	struct hda_vmaster_mute_hook *hook = private_data;
2051 
2052 	hook->hook(hook->codec, enabled);
2053 }
2054 
2055 /**
2056  * snd_hda_add_vmaster_hook - Add a vmaster hw specific hook
2057  * @codec: the HDA codec
2058  * @hook: the vmaster hook object
2059  *
2060  * Add a hw specific hook (like EAPD) with the given vmaster switch kctl.
2061  */
snd_hda_add_vmaster_hook(struct hda_codec * codec,struct hda_vmaster_mute_hook * hook)2062 int snd_hda_add_vmaster_hook(struct hda_codec *codec,
2063 			     struct hda_vmaster_mute_hook *hook)
2064 {
2065 	if (!hook->hook || !hook->sw_kctl)
2066 		return 0;
2067 	hook->codec = codec;
2068 	snd_ctl_add_vmaster_hook(hook->sw_kctl, vmaster_hook, hook);
2069 	return 0;
2070 }
2071 EXPORT_SYMBOL_GPL(snd_hda_add_vmaster_hook);
2072 
2073 /**
2074  * snd_hda_sync_vmaster_hook - Sync vmaster hook
2075  * @hook: the vmaster hook
2076  *
2077  * Call the hook with the current value for synchronization.
2078  * Should be called in init callback.
2079  */
snd_hda_sync_vmaster_hook(struct hda_vmaster_mute_hook * hook)2080 void snd_hda_sync_vmaster_hook(struct hda_vmaster_mute_hook *hook)
2081 {
2082 	if (!hook->hook || !hook->codec)
2083 		return;
2084 	/* don't call vmaster hook in the destructor since it might have
2085 	 * been already destroyed
2086 	 */
2087 	if (hook->codec->bus->shutdown)
2088 		return;
2089 	snd_ctl_sync_vmaster_hook(hook->sw_kctl);
2090 }
2091 EXPORT_SYMBOL_GPL(snd_hda_sync_vmaster_hook);
2092 
2093 
2094 /**
2095  * snd_hda_mixer_amp_switch_info - Info callback for a standard AMP mixer switch
2096  * @kcontrol: referred ctl element
2097  * @uinfo: pointer to get/store the data
2098  *
2099  * The control element is supposed to have the private_value field
2100  * set up via HDA_COMPOSE_AMP_VAL*() or related macros.
2101  */
snd_hda_mixer_amp_switch_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)2102 int snd_hda_mixer_amp_switch_info(struct snd_kcontrol *kcontrol,
2103 				  struct snd_ctl_elem_info *uinfo)
2104 {
2105 	int chs = get_amp_channels(kcontrol);
2106 
2107 	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2108 	uinfo->count = chs == 3 ? 2 : 1;
2109 	uinfo->value.integer.min = 0;
2110 	uinfo->value.integer.max = 1;
2111 	return 0;
2112 }
2113 EXPORT_SYMBOL_GPL(snd_hda_mixer_amp_switch_info);
2114 
2115 /**
2116  * snd_hda_mixer_amp_switch_get - Get callback for a standard AMP mixer switch
2117  * @kcontrol: ctl element
2118  * @ucontrol: pointer to get/store the data
2119  *
2120  * The control element is supposed to have the private_value field
2121  * set up via HDA_COMPOSE_AMP_VAL*() or related macros.
2122  */
snd_hda_mixer_amp_switch_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)2123 int snd_hda_mixer_amp_switch_get(struct snd_kcontrol *kcontrol,
2124 				 struct snd_ctl_elem_value *ucontrol)
2125 {
2126 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
2127 	hda_nid_t nid = get_amp_nid(kcontrol);
2128 	int chs = get_amp_channels(kcontrol);
2129 	int dir = get_amp_direction(kcontrol);
2130 	int idx = get_amp_index(kcontrol);
2131 	long *valp = ucontrol->value.integer.value;
2132 
2133 	if (chs & 1)
2134 		*valp++ = (snd_hda_codec_amp_read(codec, nid, 0, dir, idx) &
2135 			   HDA_AMP_MUTE) ? 0 : 1;
2136 	if (chs & 2)
2137 		*valp = (snd_hda_codec_amp_read(codec, nid, 1, dir, idx) &
2138 			 HDA_AMP_MUTE) ? 0 : 1;
2139 	return 0;
2140 }
2141 EXPORT_SYMBOL_GPL(snd_hda_mixer_amp_switch_get);
2142 
2143 /**
2144  * snd_hda_mixer_amp_switch_put - Put callback for a standard AMP mixer switch
2145  * @kcontrol: ctl element
2146  * @ucontrol: pointer to get/store the data
2147  *
2148  * The control element is supposed to have the private_value field
2149  * set up via HDA_COMPOSE_AMP_VAL*() or related macros.
2150  */
snd_hda_mixer_amp_switch_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)2151 int snd_hda_mixer_amp_switch_put(struct snd_kcontrol *kcontrol,
2152 				 struct snd_ctl_elem_value *ucontrol)
2153 {
2154 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
2155 	hda_nid_t nid = get_amp_nid(kcontrol);
2156 	int chs = get_amp_channels(kcontrol);
2157 	int dir = get_amp_direction(kcontrol);
2158 	int idx = get_amp_index(kcontrol);
2159 	long *valp = ucontrol->value.integer.value;
2160 	int change = 0;
2161 
2162 	if (chs & 1) {
2163 		change = snd_hda_codec_amp_update(codec, nid, 0, dir, idx,
2164 						  HDA_AMP_MUTE,
2165 						  *valp ? 0 : HDA_AMP_MUTE);
2166 		valp++;
2167 	}
2168 	if (chs & 2)
2169 		change |= snd_hda_codec_amp_update(codec, nid, 1, dir, idx,
2170 						   HDA_AMP_MUTE,
2171 						   *valp ? 0 : HDA_AMP_MUTE);
2172 	hda_call_check_power_status(codec, nid);
2173 	return change;
2174 }
2175 EXPORT_SYMBOL_GPL(snd_hda_mixer_amp_switch_put);
2176 
2177 /*
2178  * SPDIF out controls
2179  */
2180 
snd_hda_spdif_mask_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)2181 static int snd_hda_spdif_mask_info(struct snd_kcontrol *kcontrol,
2182 				   struct snd_ctl_elem_info *uinfo)
2183 {
2184 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
2185 	uinfo->count = 1;
2186 	return 0;
2187 }
2188 
snd_hda_spdif_cmask_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)2189 static int snd_hda_spdif_cmask_get(struct snd_kcontrol *kcontrol,
2190 				   struct snd_ctl_elem_value *ucontrol)
2191 {
2192 	ucontrol->value.iec958.status[0] = IEC958_AES0_PROFESSIONAL |
2193 					   IEC958_AES0_NONAUDIO |
2194 					   IEC958_AES0_CON_EMPHASIS_5015 |
2195 					   IEC958_AES0_CON_NOT_COPYRIGHT;
2196 	ucontrol->value.iec958.status[1] = IEC958_AES1_CON_CATEGORY |
2197 					   IEC958_AES1_CON_ORIGINAL;
2198 	return 0;
2199 }
2200 
snd_hda_spdif_pmask_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)2201 static int snd_hda_spdif_pmask_get(struct snd_kcontrol *kcontrol,
2202 				   struct snd_ctl_elem_value *ucontrol)
2203 {
2204 	ucontrol->value.iec958.status[0] = IEC958_AES0_PROFESSIONAL |
2205 					   IEC958_AES0_NONAUDIO |
2206 					   IEC958_AES0_PRO_EMPHASIS_5015;
2207 	return 0;
2208 }
2209 
snd_hda_spdif_default_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)2210 static int snd_hda_spdif_default_get(struct snd_kcontrol *kcontrol,
2211 				     struct snd_ctl_elem_value *ucontrol)
2212 {
2213 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
2214 	int idx = kcontrol->private_value;
2215 	struct hda_spdif_out *spdif;
2216 
2217 	if (WARN_ON(codec->spdif_out.used <= idx))
2218 		return -EINVAL;
2219 	mutex_lock(&codec->spdif_mutex);
2220 	spdif = snd_array_elem(&codec->spdif_out, idx);
2221 	ucontrol->value.iec958.status[0] = spdif->status & 0xff;
2222 	ucontrol->value.iec958.status[1] = (spdif->status >> 8) & 0xff;
2223 	ucontrol->value.iec958.status[2] = (spdif->status >> 16) & 0xff;
2224 	ucontrol->value.iec958.status[3] = (spdif->status >> 24) & 0xff;
2225 	mutex_unlock(&codec->spdif_mutex);
2226 
2227 	return 0;
2228 }
2229 
2230 /* convert from SPDIF status bits to HDA SPDIF bits
2231  * bit 0 (DigEn) is always set zero (to be filled later)
2232  */
convert_from_spdif_status(unsigned int sbits)2233 static unsigned short convert_from_spdif_status(unsigned int sbits)
2234 {
2235 	unsigned short val = 0;
2236 
2237 	if (sbits & IEC958_AES0_PROFESSIONAL)
2238 		val |= AC_DIG1_PROFESSIONAL;
2239 	if (sbits & IEC958_AES0_NONAUDIO)
2240 		val |= AC_DIG1_NONAUDIO;
2241 	if (sbits & IEC958_AES0_PROFESSIONAL) {
2242 		if ((sbits & IEC958_AES0_PRO_EMPHASIS) ==
2243 		    IEC958_AES0_PRO_EMPHASIS_5015)
2244 			val |= AC_DIG1_EMPHASIS;
2245 	} else {
2246 		if ((sbits & IEC958_AES0_CON_EMPHASIS) ==
2247 		    IEC958_AES0_CON_EMPHASIS_5015)
2248 			val |= AC_DIG1_EMPHASIS;
2249 		if (!(sbits & IEC958_AES0_CON_NOT_COPYRIGHT))
2250 			val |= AC_DIG1_COPYRIGHT;
2251 		if (sbits & (IEC958_AES1_CON_ORIGINAL << 8))
2252 			val |= AC_DIG1_LEVEL;
2253 		val |= sbits & (IEC958_AES1_CON_CATEGORY << 8);
2254 	}
2255 	return val;
2256 }
2257 
2258 /* convert to SPDIF status bits from HDA SPDIF bits
2259  */
convert_to_spdif_status(unsigned short val)2260 static unsigned int convert_to_spdif_status(unsigned short val)
2261 {
2262 	unsigned int sbits = 0;
2263 
2264 	if (val & AC_DIG1_NONAUDIO)
2265 		sbits |= IEC958_AES0_NONAUDIO;
2266 	if (val & AC_DIG1_PROFESSIONAL)
2267 		sbits |= IEC958_AES0_PROFESSIONAL;
2268 	if (sbits & IEC958_AES0_PROFESSIONAL) {
2269 		if (val & AC_DIG1_EMPHASIS)
2270 			sbits |= IEC958_AES0_PRO_EMPHASIS_5015;
2271 	} else {
2272 		if (val & AC_DIG1_EMPHASIS)
2273 			sbits |= IEC958_AES0_CON_EMPHASIS_5015;
2274 		if (!(val & AC_DIG1_COPYRIGHT))
2275 			sbits |= IEC958_AES0_CON_NOT_COPYRIGHT;
2276 		if (val & AC_DIG1_LEVEL)
2277 			sbits |= (IEC958_AES1_CON_ORIGINAL << 8);
2278 		sbits |= val & (0x7f << 8);
2279 	}
2280 	return sbits;
2281 }
2282 
2283 /* 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)2284 static void set_dig_out(struct hda_codec *codec, hda_nid_t nid,
2285 			int mask, int val)
2286 {
2287 	const hda_nid_t *d;
2288 
2289 	snd_hdac_regmap_update(&codec->core, nid, AC_VERB_SET_DIGI_CONVERT_1,
2290 			       mask, val);
2291 	d = codec->follower_dig_outs;
2292 	if (!d)
2293 		return;
2294 	for (; *d; d++)
2295 		snd_hdac_regmap_update(&codec->core, *d,
2296 				       AC_VERB_SET_DIGI_CONVERT_1, mask, val);
2297 }
2298 
set_dig_out_convert(struct hda_codec * codec,hda_nid_t nid,int dig1,int dig2)2299 static inline void set_dig_out_convert(struct hda_codec *codec, hda_nid_t nid,
2300 				       int dig1, int dig2)
2301 {
2302 	unsigned int mask = 0;
2303 	unsigned int val = 0;
2304 
2305 	if (dig1 != -1) {
2306 		mask |= 0xff;
2307 		val = dig1;
2308 	}
2309 	if (dig2 != -1) {
2310 		mask |= 0xff00;
2311 		val |= dig2 << 8;
2312 	}
2313 	set_dig_out(codec, nid, mask, val);
2314 }
2315 
snd_hda_spdif_default_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)2316 static int snd_hda_spdif_default_put(struct snd_kcontrol *kcontrol,
2317 				     struct snd_ctl_elem_value *ucontrol)
2318 {
2319 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
2320 	int idx = kcontrol->private_value;
2321 	struct hda_spdif_out *spdif;
2322 	hda_nid_t nid;
2323 	unsigned short val;
2324 	int change;
2325 
2326 	if (WARN_ON(codec->spdif_out.used <= idx))
2327 		return -EINVAL;
2328 	mutex_lock(&codec->spdif_mutex);
2329 	spdif = snd_array_elem(&codec->spdif_out, idx);
2330 	nid = spdif->nid;
2331 	spdif->status = ucontrol->value.iec958.status[0] |
2332 		((unsigned int)ucontrol->value.iec958.status[1] << 8) |
2333 		((unsigned int)ucontrol->value.iec958.status[2] << 16) |
2334 		((unsigned int)ucontrol->value.iec958.status[3] << 24);
2335 	val = convert_from_spdif_status(spdif->status);
2336 	val |= spdif->ctls & 1;
2337 	change = spdif->ctls != val;
2338 	spdif->ctls = val;
2339 	if (change && nid != (u16)-1)
2340 		set_dig_out_convert(codec, nid, val & 0xff, (val >> 8) & 0xff);
2341 	mutex_unlock(&codec->spdif_mutex);
2342 	return change;
2343 }
2344 
2345 #define snd_hda_spdif_out_switch_info	snd_ctl_boolean_mono_info
2346 
snd_hda_spdif_out_switch_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)2347 static int snd_hda_spdif_out_switch_get(struct snd_kcontrol *kcontrol,
2348 					struct snd_ctl_elem_value *ucontrol)
2349 {
2350 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
2351 	int idx = kcontrol->private_value;
2352 	struct hda_spdif_out *spdif;
2353 
2354 	if (WARN_ON(codec->spdif_out.used <= idx))
2355 		return -EINVAL;
2356 	mutex_lock(&codec->spdif_mutex);
2357 	spdif = snd_array_elem(&codec->spdif_out, idx);
2358 	ucontrol->value.integer.value[0] = spdif->ctls & AC_DIG1_ENABLE;
2359 	mutex_unlock(&codec->spdif_mutex);
2360 	return 0;
2361 }
2362 
set_spdif_ctls(struct hda_codec * codec,hda_nid_t nid,int dig1,int dig2)2363 static inline void set_spdif_ctls(struct hda_codec *codec, hda_nid_t nid,
2364 				  int dig1, int dig2)
2365 {
2366 	set_dig_out_convert(codec, nid, dig1, dig2);
2367 	/* unmute amp switch (if any) */
2368 	if ((get_wcaps(codec, nid) & AC_WCAP_OUT_AMP) &&
2369 	    (dig1 & AC_DIG1_ENABLE))
2370 		snd_hda_codec_amp_stereo(codec, nid, HDA_OUTPUT, 0,
2371 					    HDA_AMP_MUTE, 0);
2372 }
2373 
snd_hda_spdif_out_switch_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)2374 static int snd_hda_spdif_out_switch_put(struct snd_kcontrol *kcontrol,
2375 					struct snd_ctl_elem_value *ucontrol)
2376 {
2377 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
2378 	int idx = kcontrol->private_value;
2379 	struct hda_spdif_out *spdif;
2380 	hda_nid_t nid;
2381 	unsigned short val;
2382 	int change;
2383 
2384 	if (WARN_ON(codec->spdif_out.used <= idx))
2385 		return -EINVAL;
2386 	mutex_lock(&codec->spdif_mutex);
2387 	spdif = snd_array_elem(&codec->spdif_out, idx);
2388 	nid = spdif->nid;
2389 	val = spdif->ctls & ~AC_DIG1_ENABLE;
2390 	if (ucontrol->value.integer.value[0])
2391 		val |= AC_DIG1_ENABLE;
2392 	change = spdif->ctls != val;
2393 	spdif->ctls = val;
2394 	if (change && nid != (u16)-1)
2395 		set_spdif_ctls(codec, nid, val & 0xff, -1);
2396 	mutex_unlock(&codec->spdif_mutex);
2397 	return change;
2398 }
2399 
2400 static const struct snd_kcontrol_new dig_mixes[] = {
2401 	{
2402 		.access = SNDRV_CTL_ELEM_ACCESS_READ,
2403 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2404 		.name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, CON_MASK),
2405 		.info = snd_hda_spdif_mask_info,
2406 		.get = snd_hda_spdif_cmask_get,
2407 	},
2408 	{
2409 		.access = SNDRV_CTL_ELEM_ACCESS_READ,
2410 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2411 		.name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, PRO_MASK),
2412 		.info = snd_hda_spdif_mask_info,
2413 		.get = snd_hda_spdif_pmask_get,
2414 	},
2415 	{
2416 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2417 		.name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT),
2418 		.info = snd_hda_spdif_mask_info,
2419 		.get = snd_hda_spdif_default_get,
2420 		.put = snd_hda_spdif_default_put,
2421 	},
2422 	{
2423 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2424 		.name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, SWITCH),
2425 		.info = snd_hda_spdif_out_switch_info,
2426 		.get = snd_hda_spdif_out_switch_get,
2427 		.put = snd_hda_spdif_out_switch_put,
2428 	},
2429 	{ } /* end */
2430 };
2431 
2432 /**
2433  * snd_hda_create_dig_out_ctls - create Output SPDIF-related controls
2434  * @codec: the HDA codec
2435  * @associated_nid: NID that new ctls associated with
2436  * @cvt_nid: converter NID
2437  * @type: HDA_PCM_TYPE_*
2438  * Creates controls related with the digital output.
2439  * Called from each patch supporting the digital out.
2440  *
2441  * Returns 0 if successful, or a negative error code.
2442  */
snd_hda_create_dig_out_ctls(struct hda_codec * codec,hda_nid_t associated_nid,hda_nid_t cvt_nid,int type)2443 int snd_hda_create_dig_out_ctls(struct hda_codec *codec,
2444 				hda_nid_t associated_nid,
2445 				hda_nid_t cvt_nid,
2446 				int type)
2447 {
2448 	int err;
2449 	struct snd_kcontrol *kctl;
2450 	const struct snd_kcontrol_new *dig_mix;
2451 	int idx = 0;
2452 	int val = 0;
2453 	const int spdif_index = 16;
2454 	struct hda_spdif_out *spdif;
2455 	struct hda_bus *bus = codec->bus;
2456 
2457 	if (bus->primary_dig_out_type == HDA_PCM_TYPE_HDMI &&
2458 	    type == HDA_PCM_TYPE_SPDIF) {
2459 		idx = spdif_index;
2460 	} else if (bus->primary_dig_out_type == HDA_PCM_TYPE_SPDIF &&
2461 		   type == HDA_PCM_TYPE_HDMI) {
2462 		/* suppose a single SPDIF device */
2463 		for (dig_mix = dig_mixes; dig_mix->name; dig_mix++) {
2464 			kctl = find_mixer_ctl(codec, dig_mix->name, 0, 0);
2465 			if (!kctl)
2466 				break;
2467 			kctl->id.index = spdif_index;
2468 		}
2469 		bus->primary_dig_out_type = HDA_PCM_TYPE_HDMI;
2470 	}
2471 	if (!bus->primary_dig_out_type)
2472 		bus->primary_dig_out_type = type;
2473 
2474 	idx = find_empty_mixer_ctl_idx(codec, "IEC958 Playback Switch", idx);
2475 	if (idx < 0) {
2476 		codec_err(codec, "too many IEC958 outputs\n");
2477 		return -EBUSY;
2478 	}
2479 	spdif = snd_array_new(&codec->spdif_out);
2480 	if (!spdif)
2481 		return -ENOMEM;
2482 	for (dig_mix = dig_mixes; dig_mix->name; dig_mix++) {
2483 		kctl = snd_ctl_new1(dig_mix, codec);
2484 		if (!kctl)
2485 			return -ENOMEM;
2486 		kctl->id.index = idx;
2487 		kctl->private_value = codec->spdif_out.used - 1;
2488 		err = snd_hda_ctl_add(codec, associated_nid, kctl);
2489 		if (err < 0)
2490 			return err;
2491 	}
2492 	spdif->nid = cvt_nid;
2493 	snd_hdac_regmap_read(&codec->core, cvt_nid,
2494 			     AC_VERB_GET_DIGI_CONVERT_1, &val);
2495 	spdif->ctls = val;
2496 	spdif->status = convert_to_spdif_status(spdif->ctls);
2497 	return 0;
2498 }
2499 EXPORT_SYMBOL_GPL(snd_hda_create_dig_out_ctls);
2500 
2501 /**
2502  * snd_hda_spdif_out_of_nid - get the hda_spdif_out entry from the given NID
2503  * @codec: the HDA codec
2504  * @nid: widget NID
2505  *
2506  * call within spdif_mutex lock
2507  */
snd_hda_spdif_out_of_nid(struct hda_codec * codec,hda_nid_t nid)2508 struct hda_spdif_out *snd_hda_spdif_out_of_nid(struct hda_codec *codec,
2509 					       hda_nid_t nid)
2510 {
2511 	struct hda_spdif_out *spdif;
2512 	int i;
2513 
2514 	snd_array_for_each(&codec->spdif_out, i, spdif) {
2515 		if (spdif->nid == nid)
2516 			return spdif;
2517 	}
2518 	return NULL;
2519 }
2520 EXPORT_SYMBOL_GPL(snd_hda_spdif_out_of_nid);
2521 
2522 /**
2523  * snd_hda_spdif_ctls_unassign - Unassign the given SPDIF ctl
2524  * @codec: the HDA codec
2525  * @idx: the SPDIF ctl index
2526  *
2527  * Unassign the widget from the given SPDIF control.
2528  */
snd_hda_spdif_ctls_unassign(struct hda_codec * codec,int idx)2529 void snd_hda_spdif_ctls_unassign(struct hda_codec *codec, int idx)
2530 {
2531 	struct hda_spdif_out *spdif;
2532 
2533 	if (WARN_ON(codec->spdif_out.used <= idx))
2534 		return;
2535 	mutex_lock(&codec->spdif_mutex);
2536 	spdif = snd_array_elem(&codec->spdif_out, idx);
2537 	spdif->nid = (u16)-1;
2538 	mutex_unlock(&codec->spdif_mutex);
2539 }
2540 EXPORT_SYMBOL_GPL(snd_hda_spdif_ctls_unassign);
2541 
2542 /**
2543  * snd_hda_spdif_ctls_assign - Assign the SPDIF controls to the given NID
2544  * @codec: the HDA codec
2545  * @idx: the SPDIF ctl idx
2546  * @nid: widget NID
2547  *
2548  * Assign the widget to the SPDIF control with the given index.
2549  */
snd_hda_spdif_ctls_assign(struct hda_codec * codec,int idx,hda_nid_t nid)2550 void snd_hda_spdif_ctls_assign(struct hda_codec *codec, int idx, hda_nid_t nid)
2551 {
2552 	struct hda_spdif_out *spdif;
2553 	unsigned short val;
2554 
2555 	if (WARN_ON(codec->spdif_out.used <= idx))
2556 		return;
2557 	mutex_lock(&codec->spdif_mutex);
2558 	spdif = snd_array_elem(&codec->spdif_out, idx);
2559 	if (spdif->nid != nid) {
2560 		spdif->nid = nid;
2561 		val = spdif->ctls;
2562 		set_spdif_ctls(codec, nid, val & 0xff, (val >> 8) & 0xff);
2563 	}
2564 	mutex_unlock(&codec->spdif_mutex);
2565 }
2566 EXPORT_SYMBOL_GPL(snd_hda_spdif_ctls_assign);
2567 
2568 /*
2569  * SPDIF sharing with analog output
2570  */
spdif_share_sw_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)2571 static int spdif_share_sw_get(struct snd_kcontrol *kcontrol,
2572 			      struct snd_ctl_elem_value *ucontrol)
2573 {
2574 	struct hda_multi_out *mout = snd_kcontrol_chip(kcontrol);
2575 	ucontrol->value.integer.value[0] = mout->share_spdif;
2576 	return 0;
2577 }
2578 
spdif_share_sw_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)2579 static int spdif_share_sw_put(struct snd_kcontrol *kcontrol,
2580 			      struct snd_ctl_elem_value *ucontrol)
2581 {
2582 	struct hda_multi_out *mout = snd_kcontrol_chip(kcontrol);
2583 	mout->share_spdif = !!ucontrol->value.integer.value[0];
2584 	return 0;
2585 }
2586 
2587 static const struct snd_kcontrol_new spdif_share_sw = {
2588 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2589 	.name = "IEC958 Default PCM Playback Switch",
2590 	.info = snd_ctl_boolean_mono_info,
2591 	.get = spdif_share_sw_get,
2592 	.put = spdif_share_sw_put,
2593 };
2594 
2595 /**
2596  * snd_hda_create_spdif_share_sw - create Default PCM switch
2597  * @codec: the HDA codec
2598  * @mout: multi-out instance
2599  */
snd_hda_create_spdif_share_sw(struct hda_codec * codec,struct hda_multi_out * mout)2600 int snd_hda_create_spdif_share_sw(struct hda_codec *codec,
2601 				  struct hda_multi_out *mout)
2602 {
2603 	struct snd_kcontrol *kctl;
2604 
2605 	if (!mout->dig_out_nid)
2606 		return 0;
2607 
2608 	kctl = snd_ctl_new1(&spdif_share_sw, mout);
2609 	if (!kctl)
2610 		return -ENOMEM;
2611 	/* ATTENTION: here mout is passed as private_data, instead of codec */
2612 	return snd_hda_ctl_add(codec, mout->dig_out_nid, kctl);
2613 }
2614 EXPORT_SYMBOL_GPL(snd_hda_create_spdif_share_sw);
2615 
2616 /*
2617  * SPDIF input
2618  */
2619 
2620 #define snd_hda_spdif_in_switch_info	snd_hda_spdif_out_switch_info
2621 
snd_hda_spdif_in_switch_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)2622 static int snd_hda_spdif_in_switch_get(struct snd_kcontrol *kcontrol,
2623 				       struct snd_ctl_elem_value *ucontrol)
2624 {
2625 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
2626 
2627 	ucontrol->value.integer.value[0] = codec->spdif_in_enable;
2628 	return 0;
2629 }
2630 
snd_hda_spdif_in_switch_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)2631 static int snd_hda_spdif_in_switch_put(struct snd_kcontrol *kcontrol,
2632 				       struct snd_ctl_elem_value *ucontrol)
2633 {
2634 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
2635 	hda_nid_t nid = kcontrol->private_value;
2636 	unsigned int val = !!ucontrol->value.integer.value[0];
2637 	int change;
2638 
2639 	mutex_lock(&codec->spdif_mutex);
2640 	change = codec->spdif_in_enable != val;
2641 	if (change) {
2642 		codec->spdif_in_enable = val;
2643 		snd_hdac_regmap_write(&codec->core, nid,
2644 				      AC_VERB_SET_DIGI_CONVERT_1, val);
2645 	}
2646 	mutex_unlock(&codec->spdif_mutex);
2647 	return change;
2648 }
2649 
snd_hda_spdif_in_status_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)2650 static int snd_hda_spdif_in_status_get(struct snd_kcontrol *kcontrol,
2651 				       struct snd_ctl_elem_value *ucontrol)
2652 {
2653 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
2654 	hda_nid_t nid = kcontrol->private_value;
2655 	unsigned int val;
2656 	unsigned int sbits;
2657 
2658 	snd_hdac_regmap_read(&codec->core, nid,
2659 			     AC_VERB_GET_DIGI_CONVERT_1, &val);
2660 	sbits = convert_to_spdif_status(val);
2661 	ucontrol->value.iec958.status[0] = sbits;
2662 	ucontrol->value.iec958.status[1] = sbits >> 8;
2663 	ucontrol->value.iec958.status[2] = sbits >> 16;
2664 	ucontrol->value.iec958.status[3] = sbits >> 24;
2665 	return 0;
2666 }
2667 
2668 static const struct snd_kcontrol_new dig_in_ctls[] = {
2669 	{
2670 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2671 		.name = SNDRV_CTL_NAME_IEC958("", CAPTURE, SWITCH),
2672 		.info = snd_hda_spdif_in_switch_info,
2673 		.get = snd_hda_spdif_in_switch_get,
2674 		.put = snd_hda_spdif_in_switch_put,
2675 	},
2676 	{
2677 		.access = SNDRV_CTL_ELEM_ACCESS_READ,
2678 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2679 		.name = SNDRV_CTL_NAME_IEC958("", CAPTURE, DEFAULT),
2680 		.info = snd_hda_spdif_mask_info,
2681 		.get = snd_hda_spdif_in_status_get,
2682 	},
2683 	{ } /* end */
2684 };
2685 
2686 /**
2687  * snd_hda_create_spdif_in_ctls - create Input SPDIF-related controls
2688  * @codec: the HDA codec
2689  * @nid: audio in widget NID
2690  *
2691  * Creates controls related with the SPDIF input.
2692  * Called from each patch supporting the SPDIF in.
2693  *
2694  * Returns 0 if successful, or a negative error code.
2695  */
snd_hda_create_spdif_in_ctls(struct hda_codec * codec,hda_nid_t nid)2696 int snd_hda_create_spdif_in_ctls(struct hda_codec *codec, hda_nid_t nid)
2697 {
2698 	int err;
2699 	struct snd_kcontrol *kctl;
2700 	const struct snd_kcontrol_new *dig_mix;
2701 	int idx;
2702 
2703 	idx = find_empty_mixer_ctl_idx(codec, "IEC958 Capture Switch", 0);
2704 	if (idx < 0) {
2705 		codec_err(codec, "too many IEC958 inputs\n");
2706 		return -EBUSY;
2707 	}
2708 	for (dig_mix = dig_in_ctls; dig_mix->name; dig_mix++) {
2709 		kctl = snd_ctl_new1(dig_mix, codec);
2710 		if (!kctl)
2711 			return -ENOMEM;
2712 		kctl->private_value = nid;
2713 		err = snd_hda_ctl_add(codec, nid, kctl);
2714 		if (err < 0)
2715 			return err;
2716 	}
2717 	codec->spdif_in_enable =
2718 		snd_hda_codec_read(codec, nid, 0,
2719 				   AC_VERB_GET_DIGI_CONVERT_1, 0) &
2720 		AC_DIG1_ENABLE;
2721 	return 0;
2722 }
2723 EXPORT_SYMBOL_GPL(snd_hda_create_spdif_in_ctls);
2724 
2725 /**
2726  * snd_hda_codec_set_power_to_all - Set the power state to all widgets
2727  * @codec: the HDA codec
2728  * @fg: function group (not used now)
2729  * @power_state: the power state to set (AC_PWRST_*)
2730  *
2731  * Set the given power state to all widgets that have the power control.
2732  * If the codec has power_filter set, it evaluates the power state and
2733  * filter out if it's unchanged as D3.
2734  */
snd_hda_codec_set_power_to_all(struct hda_codec * codec,hda_nid_t fg,unsigned int power_state)2735 void snd_hda_codec_set_power_to_all(struct hda_codec *codec, hda_nid_t fg,
2736 				    unsigned int power_state)
2737 {
2738 	hda_nid_t nid;
2739 
2740 	for_each_hda_codec_node(nid, codec) {
2741 		unsigned int wcaps = get_wcaps(codec, nid);
2742 		unsigned int state = power_state;
2743 		if (!(wcaps & AC_WCAP_POWER))
2744 			continue;
2745 		if (codec->power_filter) {
2746 			state = codec->power_filter(codec, nid, power_state);
2747 			if (state != power_state && power_state == AC_PWRST_D3)
2748 				continue;
2749 		}
2750 		snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_POWER_STATE,
2751 				    state);
2752 	}
2753 }
2754 EXPORT_SYMBOL_GPL(snd_hda_codec_set_power_to_all);
2755 
2756 /**
2757  * snd_hda_codec_eapd_power_filter - A power filter callback for EAPD
2758  * @codec: the HDA codec
2759  * @nid: widget NID
2760  * @power_state: power state to evalue
2761  *
2762  * Don't power down the widget if it controls eapd and EAPD_BTLENABLE is set.
2763  * This can be used a codec power_filter callback.
2764  */
snd_hda_codec_eapd_power_filter(struct hda_codec * codec,hda_nid_t nid,unsigned int power_state)2765 unsigned int snd_hda_codec_eapd_power_filter(struct hda_codec *codec,
2766 					     hda_nid_t nid,
2767 					     unsigned int power_state)
2768 {
2769 	if (nid == codec->core.afg || nid == codec->core.mfg)
2770 		return power_state;
2771 	if (power_state == AC_PWRST_D3 &&
2772 	    get_wcaps_type(get_wcaps(codec, nid)) == AC_WID_PIN &&
2773 	    (snd_hda_query_pin_caps(codec, nid) & AC_PINCAP_EAPD)) {
2774 		int eapd = snd_hda_codec_read(codec, nid, 0,
2775 					      AC_VERB_GET_EAPD_BTLENABLE, 0);
2776 		if (eapd & 0x02)
2777 			return AC_PWRST_D0;
2778 	}
2779 	return power_state;
2780 }
2781 EXPORT_SYMBOL_GPL(snd_hda_codec_eapd_power_filter);
2782 
2783 /*
2784  * set power state of the codec, and return the power state
2785  */
hda_set_power_state(struct hda_codec * codec,unsigned int power_state)2786 static unsigned int hda_set_power_state(struct hda_codec *codec,
2787 					unsigned int power_state)
2788 {
2789 	hda_nid_t fg = codec->core.afg ? codec->core.afg : codec->core.mfg;
2790 	int count;
2791 	unsigned int state;
2792 	int flags = 0;
2793 
2794 	/* this delay seems necessary to avoid click noise at power-down */
2795 	if (power_state == AC_PWRST_D3) {
2796 		if (codec->depop_delay < 0)
2797 			msleep(codec_has_epss(codec) ? 10 : 100);
2798 		else if (codec->depop_delay > 0)
2799 			msleep(codec->depop_delay);
2800 		flags = HDA_RW_NO_RESPONSE_FALLBACK;
2801 	}
2802 
2803 	/* repeat power states setting at most 10 times*/
2804 	for (count = 0; count < 10; count++) {
2805 		if (codec->patch_ops.set_power_state)
2806 			codec->patch_ops.set_power_state(codec, fg,
2807 							 power_state);
2808 		else {
2809 			state = power_state;
2810 			if (codec->power_filter)
2811 				state = codec->power_filter(codec, fg, state);
2812 			if (state == power_state || power_state != AC_PWRST_D3)
2813 				snd_hda_codec_read(codec, fg, flags,
2814 						   AC_VERB_SET_POWER_STATE,
2815 						   state);
2816 			snd_hda_codec_set_power_to_all(codec, fg, power_state);
2817 		}
2818 		state = snd_hda_sync_power_state(codec, fg, power_state);
2819 		if (!(state & AC_PWRST_ERROR))
2820 			break;
2821 	}
2822 
2823 	return state;
2824 }
2825 
2826 /* sync power states of all widgets;
2827  * this is called at the end of codec parsing
2828  */
sync_power_up_states(struct hda_codec * codec)2829 static void sync_power_up_states(struct hda_codec *codec)
2830 {
2831 	hda_nid_t nid;
2832 
2833 	/* don't care if no filter is used */
2834 	if (!codec->power_filter)
2835 		return;
2836 
2837 	for_each_hda_codec_node(nid, codec) {
2838 		unsigned int wcaps = get_wcaps(codec, nid);
2839 		unsigned int target;
2840 		if (!(wcaps & AC_WCAP_POWER))
2841 			continue;
2842 		target = codec->power_filter(codec, nid, AC_PWRST_D0);
2843 		if (target == AC_PWRST_D0)
2844 			continue;
2845 		if (!snd_hda_check_power_state(codec, nid, target))
2846 			snd_hda_codec_write(codec, nid, 0,
2847 					    AC_VERB_SET_POWER_STATE, target);
2848 	}
2849 }
2850 
2851 #ifdef CONFIG_SND_HDA_RECONFIG
2852 /* execute additional init verbs */
hda_exec_init_verbs(struct hda_codec * codec)2853 static void hda_exec_init_verbs(struct hda_codec *codec)
2854 {
2855 	if (codec->init_verbs.list)
2856 		snd_hda_sequence_write(codec, codec->init_verbs.list);
2857 }
2858 #else
hda_exec_init_verbs(struct hda_codec * codec)2859 static inline void hda_exec_init_verbs(struct hda_codec *codec) {}
2860 #endif
2861 
2862 #ifdef CONFIG_PM
2863 /* update the power on/off account with the current jiffies */
update_power_acct(struct hda_codec * codec,bool on)2864 static void update_power_acct(struct hda_codec *codec, bool on)
2865 {
2866 	unsigned long delta = jiffies - codec->power_jiffies;
2867 
2868 	if (on)
2869 		codec->power_on_acct += delta;
2870 	else
2871 		codec->power_off_acct += delta;
2872 	codec->power_jiffies += delta;
2873 }
2874 
snd_hda_update_power_acct(struct hda_codec * codec)2875 void snd_hda_update_power_acct(struct hda_codec *codec)
2876 {
2877 	update_power_acct(codec, hda_codec_is_power_on(codec));
2878 }
2879 
2880 /*
2881  * call suspend and power-down; used both from PM and power-save
2882  * this function returns the power state in the end
2883  */
hda_call_codec_suspend(struct hda_codec * codec)2884 static unsigned int hda_call_codec_suspend(struct hda_codec *codec)
2885 {
2886 	unsigned int state;
2887 
2888 	snd_hdac_enter_pm(&codec->core);
2889 	if (codec->patch_ops.suspend)
2890 		codec->patch_ops.suspend(codec);
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->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 			if (addr > 0)
3395 				kctl->id.device = addr;
3396 			if (idx > 0)
3397 				kctl->id.index = idx;
3398 			err = snd_hda_ctl_add(codec, 0, kctl);
3399 			if (!err)
3400 				break;
3401 			/* try first with another device index corresponding to
3402 			 * the codec addr; if it still fails (or it's the
3403 			 * primary codec), then try another control index
3404 			 */
3405 			if (!addr && codec->core.addr)
3406 				addr = codec->core.addr;
3407 			else if (!idx && !knew->index) {
3408 				idx = find_empty_mixer_ctl_idx(codec,
3409 							       knew->name, 0);
3410 				if (idx <= 0)
3411 					return err;
3412 			} else
3413 				return err;
3414 		}
3415 	}
3416 	return 0;
3417 }
3418 EXPORT_SYMBOL_GPL(snd_hda_add_new_ctls);
3419 
3420 #ifdef CONFIG_PM
3421 /**
3422  * snd_hda_codec_set_power_save - Configure codec's runtime PM
3423  * @codec: codec device to configure
3424  * @delay: autosuspend delay
3425  */
snd_hda_codec_set_power_save(struct hda_codec * codec,int delay)3426 void snd_hda_codec_set_power_save(struct hda_codec *codec, int delay)
3427 {
3428 	struct device *dev = hda_codec_dev(codec);
3429 
3430 	if (delay == 0 && codec->auto_runtime_pm)
3431 		delay = 3000;
3432 
3433 	if (delay > 0) {
3434 		pm_runtime_set_autosuspend_delay(dev, delay);
3435 		pm_runtime_use_autosuspend(dev);
3436 		pm_runtime_allow(dev);
3437 		if (!pm_runtime_suspended(dev))
3438 			pm_runtime_mark_last_busy(dev);
3439 	} else {
3440 		pm_runtime_dont_use_autosuspend(dev);
3441 		pm_runtime_forbid(dev);
3442 	}
3443 }
3444 EXPORT_SYMBOL_GPL(snd_hda_codec_set_power_save);
3445 
3446 /**
3447  * snd_hda_set_power_save - reprogram autosuspend for the given delay
3448  * @bus: HD-audio bus
3449  * @delay: autosuspend delay in msec, 0 = off
3450  *
3451  * Synchronize the runtime PM autosuspend state from the power_save option.
3452  */
snd_hda_set_power_save(struct hda_bus * bus,int delay)3453 void snd_hda_set_power_save(struct hda_bus *bus, int delay)
3454 {
3455 	struct hda_codec *c;
3456 
3457 	list_for_each_codec(c, bus)
3458 		snd_hda_codec_set_power_save(c, delay);
3459 }
3460 EXPORT_SYMBOL_GPL(snd_hda_set_power_save);
3461 
3462 /**
3463  * snd_hda_check_amp_list_power - Check the amp list and update the power
3464  * @codec: HD-audio codec
3465  * @check: the object containing an AMP list and the status
3466  * @nid: NID to check / update
3467  *
3468  * Check whether the given NID is in the amp list.  If it's in the list,
3469  * check the current AMP status, and update the power-status according
3470  * to the mute status.
3471  *
3472  * This function is supposed to be set or called from the check_power_status
3473  * patch ops.
3474  */
snd_hda_check_amp_list_power(struct hda_codec * codec,struct hda_loopback_check * check,hda_nid_t nid)3475 int snd_hda_check_amp_list_power(struct hda_codec *codec,
3476 				 struct hda_loopback_check *check,
3477 				 hda_nid_t nid)
3478 {
3479 	const struct hda_amp_list *p;
3480 	int ch, v;
3481 
3482 	if (!check->amplist)
3483 		return 0;
3484 	for (p = check->amplist; p->nid; p++) {
3485 		if (p->nid == nid)
3486 			break;
3487 	}
3488 	if (!p->nid)
3489 		return 0; /* nothing changed */
3490 
3491 	for (p = check->amplist; p->nid; p++) {
3492 		for (ch = 0; ch < 2; ch++) {
3493 			v = snd_hda_codec_amp_read(codec, p->nid, ch, p->dir,
3494 						   p->idx);
3495 			if (!(v & HDA_AMP_MUTE) && v > 0) {
3496 				if (!check->power_on) {
3497 					check->power_on = 1;
3498 					snd_hda_power_up_pm(codec);
3499 				}
3500 				return 1;
3501 			}
3502 		}
3503 	}
3504 	if (check->power_on) {
3505 		check->power_on = 0;
3506 		snd_hda_power_down_pm(codec);
3507 	}
3508 	return 0;
3509 }
3510 EXPORT_SYMBOL_GPL(snd_hda_check_amp_list_power);
3511 #endif
3512 
3513 /*
3514  * input MUX helper
3515  */
3516 
3517 /**
3518  * snd_hda_input_mux_info - Info callback helper for the input-mux enum
3519  * @imux: imux helper object
3520  * @uinfo: pointer to get/store the data
3521  */
snd_hda_input_mux_info(const struct hda_input_mux * imux,struct snd_ctl_elem_info * uinfo)3522 int snd_hda_input_mux_info(const struct hda_input_mux *imux,
3523 			   struct snd_ctl_elem_info *uinfo)
3524 {
3525 	unsigned int index;
3526 
3527 	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
3528 	uinfo->count = 1;
3529 	uinfo->value.enumerated.items = imux->num_items;
3530 	if (!imux->num_items)
3531 		return 0;
3532 	index = uinfo->value.enumerated.item;
3533 	if (index >= imux->num_items)
3534 		index = imux->num_items - 1;
3535 	strcpy(uinfo->value.enumerated.name, imux->items[index].label);
3536 	return 0;
3537 }
3538 EXPORT_SYMBOL_GPL(snd_hda_input_mux_info);
3539 
3540 /**
3541  * snd_hda_input_mux_put - Put callback helper for the input-mux enum
3542  * @codec: the HDA codec
3543  * @imux: imux helper object
3544  * @ucontrol: pointer to get/store the data
3545  * @nid: input mux NID
3546  * @cur_val: pointer to get/store the current imux value
3547  */
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)3548 int snd_hda_input_mux_put(struct hda_codec *codec,
3549 			  const struct hda_input_mux *imux,
3550 			  struct snd_ctl_elem_value *ucontrol,
3551 			  hda_nid_t nid,
3552 			  unsigned int *cur_val)
3553 {
3554 	unsigned int idx;
3555 
3556 	if (!imux->num_items)
3557 		return 0;
3558 	idx = ucontrol->value.enumerated.item[0];
3559 	if (idx >= imux->num_items)
3560 		idx = imux->num_items - 1;
3561 	if (*cur_val == idx)
3562 		return 0;
3563 	snd_hda_codec_write_cache(codec, nid, 0, AC_VERB_SET_CONNECT_SEL,
3564 				  imux->items[idx].index);
3565 	*cur_val = idx;
3566 	return 1;
3567 }
3568 EXPORT_SYMBOL_GPL(snd_hda_input_mux_put);
3569 
3570 
3571 /**
3572  * snd_hda_enum_helper_info - Helper for simple enum ctls
3573  * @kcontrol: ctl element
3574  * @uinfo: pointer to get/store the data
3575  * @num_items: number of enum items
3576  * @texts: enum item string array
3577  *
3578  * process kcontrol info callback of a simple string enum array
3579  * when @num_items is 0 or @texts is NULL, assume a boolean enum array
3580  */
snd_hda_enum_helper_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo,int num_items,const char * const * texts)3581 int snd_hda_enum_helper_info(struct snd_kcontrol *kcontrol,
3582 			     struct snd_ctl_elem_info *uinfo,
3583 			     int num_items, const char * const *texts)
3584 {
3585 	static const char * const texts_default[] = {
3586 		"Disabled", "Enabled"
3587 	};
3588 
3589 	if (!texts || !num_items) {
3590 		num_items = 2;
3591 		texts = texts_default;
3592 	}
3593 
3594 	return snd_ctl_enum_info(uinfo, 1, num_items, texts);
3595 }
3596 EXPORT_SYMBOL_GPL(snd_hda_enum_helper_info);
3597 
3598 /*
3599  * Multi-channel / digital-out PCM helper functions
3600  */
3601 
3602 /* setup SPDIF output stream */
setup_dig_out_stream(struct hda_codec * codec,hda_nid_t nid,unsigned int stream_tag,unsigned int format)3603 static void setup_dig_out_stream(struct hda_codec *codec, hda_nid_t nid,
3604 				 unsigned int stream_tag, unsigned int format)
3605 {
3606 	struct hda_spdif_out *spdif;
3607 	unsigned int curr_fmt;
3608 	bool reset;
3609 
3610 	spdif = snd_hda_spdif_out_of_nid(codec, nid);
3611 	/* Add sanity check to pass klockwork check.
3612 	 * This should never happen.
3613 	 */
3614 	if (WARN_ON(spdif == NULL))
3615 		return;
3616 
3617 	curr_fmt = snd_hda_codec_read(codec, nid, 0,
3618 				      AC_VERB_GET_STREAM_FORMAT, 0);
3619 	reset = codec->spdif_status_reset &&
3620 		(spdif->ctls & AC_DIG1_ENABLE) &&
3621 		curr_fmt != format;
3622 
3623 	/* turn off SPDIF if needed; otherwise the IEC958 bits won't be
3624 	   updated */
3625 	if (reset)
3626 		set_dig_out_convert(codec, nid,
3627 				    spdif->ctls & ~AC_DIG1_ENABLE & 0xff,
3628 				    -1);
3629 	snd_hda_codec_setup_stream(codec, nid, stream_tag, 0, format);
3630 	if (codec->follower_dig_outs) {
3631 		const hda_nid_t *d;
3632 		for (d = codec->follower_dig_outs; *d; d++)
3633 			snd_hda_codec_setup_stream(codec, *d, stream_tag, 0,
3634 						   format);
3635 	}
3636 	/* turn on again (if needed) */
3637 	if (reset)
3638 		set_dig_out_convert(codec, nid,
3639 				    spdif->ctls & 0xff, -1);
3640 }
3641 
cleanup_dig_out_stream(struct hda_codec * codec,hda_nid_t nid)3642 static void cleanup_dig_out_stream(struct hda_codec *codec, hda_nid_t nid)
3643 {
3644 	snd_hda_codec_cleanup_stream(codec, nid);
3645 	if (codec->follower_dig_outs) {
3646 		const hda_nid_t *d;
3647 		for (d = codec->follower_dig_outs; *d; d++)
3648 			snd_hda_codec_cleanup_stream(codec, *d);
3649 	}
3650 }
3651 
3652 /**
3653  * snd_hda_multi_out_dig_open - open the digital out in the exclusive mode
3654  * @codec: the HDA codec
3655  * @mout: hda_multi_out object
3656  */
snd_hda_multi_out_dig_open(struct hda_codec * codec,struct hda_multi_out * mout)3657 int snd_hda_multi_out_dig_open(struct hda_codec *codec,
3658 			       struct hda_multi_out *mout)
3659 {
3660 	mutex_lock(&codec->spdif_mutex);
3661 	if (mout->dig_out_used == HDA_DIG_ANALOG_DUP)
3662 		/* already opened as analog dup; reset it once */
3663 		cleanup_dig_out_stream(codec, mout->dig_out_nid);
3664 	mout->dig_out_used = HDA_DIG_EXCLUSIVE;
3665 	mutex_unlock(&codec->spdif_mutex);
3666 	return 0;
3667 }
3668 EXPORT_SYMBOL_GPL(snd_hda_multi_out_dig_open);
3669 
3670 /**
3671  * snd_hda_multi_out_dig_prepare - prepare the digital out stream
3672  * @codec: the HDA codec
3673  * @mout: hda_multi_out object
3674  * @stream_tag: stream tag to assign
3675  * @format: format id to assign
3676  * @substream: PCM substream to assign
3677  */
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)3678 int snd_hda_multi_out_dig_prepare(struct hda_codec *codec,
3679 				  struct hda_multi_out *mout,
3680 				  unsigned int stream_tag,
3681 				  unsigned int format,
3682 				  struct snd_pcm_substream *substream)
3683 {
3684 	mutex_lock(&codec->spdif_mutex);
3685 	setup_dig_out_stream(codec, mout->dig_out_nid, stream_tag, format);
3686 	mutex_unlock(&codec->spdif_mutex);
3687 	return 0;
3688 }
3689 EXPORT_SYMBOL_GPL(snd_hda_multi_out_dig_prepare);
3690 
3691 /**
3692  * snd_hda_multi_out_dig_cleanup - clean-up the digital out stream
3693  * @codec: the HDA codec
3694  * @mout: hda_multi_out object
3695  */
snd_hda_multi_out_dig_cleanup(struct hda_codec * codec,struct hda_multi_out * mout)3696 int snd_hda_multi_out_dig_cleanup(struct hda_codec *codec,
3697 				  struct hda_multi_out *mout)
3698 {
3699 	mutex_lock(&codec->spdif_mutex);
3700 	cleanup_dig_out_stream(codec, mout->dig_out_nid);
3701 	mutex_unlock(&codec->spdif_mutex);
3702 	return 0;
3703 }
3704 EXPORT_SYMBOL_GPL(snd_hda_multi_out_dig_cleanup);
3705 
3706 /**
3707  * snd_hda_multi_out_dig_close - release the digital out stream
3708  * @codec: the HDA codec
3709  * @mout: hda_multi_out object
3710  */
snd_hda_multi_out_dig_close(struct hda_codec * codec,struct hda_multi_out * mout)3711 int snd_hda_multi_out_dig_close(struct hda_codec *codec,
3712 				struct hda_multi_out *mout)
3713 {
3714 	mutex_lock(&codec->spdif_mutex);
3715 	mout->dig_out_used = 0;
3716 	mutex_unlock(&codec->spdif_mutex);
3717 	return 0;
3718 }
3719 EXPORT_SYMBOL_GPL(snd_hda_multi_out_dig_close);
3720 
3721 /**
3722  * snd_hda_multi_out_analog_open - open analog outputs
3723  * @codec: the HDA codec
3724  * @mout: hda_multi_out object
3725  * @substream: PCM substream to assign
3726  * @hinfo: PCM information to assign
3727  *
3728  * Open analog outputs and set up the hw-constraints.
3729  * If the digital outputs can be opened as follower, open the digital
3730  * outputs, too.
3731  */
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)3732 int snd_hda_multi_out_analog_open(struct hda_codec *codec,
3733 				  struct hda_multi_out *mout,
3734 				  struct snd_pcm_substream *substream,
3735 				  struct hda_pcm_stream *hinfo)
3736 {
3737 	struct snd_pcm_runtime *runtime = substream->runtime;
3738 	runtime->hw.channels_max = mout->max_channels;
3739 	if (mout->dig_out_nid) {
3740 		if (!mout->analog_rates) {
3741 			mout->analog_rates = hinfo->rates;
3742 			mout->analog_formats = hinfo->formats;
3743 			mout->analog_maxbps = hinfo->maxbps;
3744 		} else {
3745 			runtime->hw.rates = mout->analog_rates;
3746 			runtime->hw.formats = mout->analog_formats;
3747 			hinfo->maxbps = mout->analog_maxbps;
3748 		}
3749 		if (!mout->spdif_rates) {
3750 			snd_hda_query_supported_pcm(codec, mout->dig_out_nid,
3751 						    &mout->spdif_rates,
3752 						    &mout->spdif_formats,
3753 						    &mout->spdif_maxbps);
3754 		}
3755 		mutex_lock(&codec->spdif_mutex);
3756 		if (mout->share_spdif) {
3757 			if ((runtime->hw.rates & mout->spdif_rates) &&
3758 			    (runtime->hw.formats & mout->spdif_formats)) {
3759 				runtime->hw.rates &= mout->spdif_rates;
3760 				runtime->hw.formats &= mout->spdif_formats;
3761 				if (mout->spdif_maxbps < hinfo->maxbps)
3762 					hinfo->maxbps = mout->spdif_maxbps;
3763 			} else {
3764 				mout->share_spdif = 0;
3765 				/* FIXME: need notify? */
3766 			}
3767 		}
3768 		mutex_unlock(&codec->spdif_mutex);
3769 	}
3770 	return snd_pcm_hw_constraint_step(substream->runtime, 0,
3771 					  SNDRV_PCM_HW_PARAM_CHANNELS, 2);
3772 }
3773 EXPORT_SYMBOL_GPL(snd_hda_multi_out_analog_open);
3774 
3775 /**
3776  * snd_hda_multi_out_analog_prepare - Preapre the analog outputs.
3777  * @codec: the HDA codec
3778  * @mout: hda_multi_out object
3779  * @stream_tag: stream tag to assign
3780  * @format: format id to assign
3781  * @substream: PCM substream to assign
3782  *
3783  * Set up the i/o for analog out.
3784  * When the digital out is available, copy the front out to digital out, too.
3785  */
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)3786 int snd_hda_multi_out_analog_prepare(struct hda_codec *codec,
3787 				     struct hda_multi_out *mout,
3788 				     unsigned int stream_tag,
3789 				     unsigned int format,
3790 				     struct snd_pcm_substream *substream)
3791 {
3792 	const hda_nid_t *nids = mout->dac_nids;
3793 	int chs = substream->runtime->channels;
3794 	struct hda_spdif_out *spdif;
3795 	int i;
3796 
3797 	mutex_lock(&codec->spdif_mutex);
3798 	spdif = snd_hda_spdif_out_of_nid(codec, mout->dig_out_nid);
3799 	if (mout->dig_out_nid && mout->share_spdif &&
3800 	    mout->dig_out_used != HDA_DIG_EXCLUSIVE) {
3801 		if (chs == 2 && spdif != NULL &&
3802 		    snd_hda_is_supported_format(codec, mout->dig_out_nid,
3803 						format) &&
3804 		    !(spdif->status & IEC958_AES0_NONAUDIO)) {
3805 			mout->dig_out_used = HDA_DIG_ANALOG_DUP;
3806 			setup_dig_out_stream(codec, mout->dig_out_nid,
3807 					     stream_tag, format);
3808 		} else {
3809 			mout->dig_out_used = 0;
3810 			cleanup_dig_out_stream(codec, mout->dig_out_nid);
3811 		}
3812 	}
3813 	mutex_unlock(&codec->spdif_mutex);
3814 
3815 	/* front */
3816 	snd_hda_codec_setup_stream(codec, nids[HDA_FRONT], stream_tag,
3817 				   0, format);
3818 	if (!mout->no_share_stream &&
3819 	    mout->hp_nid && mout->hp_nid != nids[HDA_FRONT])
3820 		/* headphone out will just decode front left/right (stereo) */
3821 		snd_hda_codec_setup_stream(codec, mout->hp_nid, stream_tag,
3822 					   0, format);
3823 	/* extra outputs copied from front */
3824 	for (i = 0; i < ARRAY_SIZE(mout->hp_out_nid); i++)
3825 		if (!mout->no_share_stream && mout->hp_out_nid[i])
3826 			snd_hda_codec_setup_stream(codec,
3827 						   mout->hp_out_nid[i],
3828 						   stream_tag, 0, format);
3829 
3830 	/* surrounds */
3831 	for (i = 1; i < mout->num_dacs; i++) {
3832 		if (chs >= (i + 1) * 2) /* independent out */
3833 			snd_hda_codec_setup_stream(codec, nids[i], stream_tag,
3834 						   i * 2, format);
3835 		else if (!mout->no_share_stream) /* copy front */
3836 			snd_hda_codec_setup_stream(codec, nids[i], stream_tag,
3837 						   0, format);
3838 	}
3839 
3840 	/* extra surrounds */
3841 	for (i = 0; i < ARRAY_SIZE(mout->extra_out_nid); i++) {
3842 		int ch = 0;
3843 		if (!mout->extra_out_nid[i])
3844 			break;
3845 		if (chs >= (i + 1) * 2)
3846 			ch = i * 2;
3847 		else if (!mout->no_share_stream)
3848 			break;
3849 		snd_hda_codec_setup_stream(codec, mout->extra_out_nid[i],
3850 					   stream_tag, ch, format);
3851 	}
3852 
3853 	return 0;
3854 }
3855 EXPORT_SYMBOL_GPL(snd_hda_multi_out_analog_prepare);
3856 
3857 /**
3858  * snd_hda_multi_out_analog_cleanup - clean up the setting for analog out
3859  * @codec: the HDA codec
3860  * @mout: hda_multi_out object
3861  */
snd_hda_multi_out_analog_cleanup(struct hda_codec * codec,struct hda_multi_out * mout)3862 int snd_hda_multi_out_analog_cleanup(struct hda_codec *codec,
3863 				     struct hda_multi_out *mout)
3864 {
3865 	const hda_nid_t *nids = mout->dac_nids;
3866 	int i;
3867 
3868 	for (i = 0; i < mout->num_dacs; i++)
3869 		snd_hda_codec_cleanup_stream(codec, nids[i]);
3870 	if (mout->hp_nid)
3871 		snd_hda_codec_cleanup_stream(codec, mout->hp_nid);
3872 	for (i = 0; i < ARRAY_SIZE(mout->hp_out_nid); i++)
3873 		if (mout->hp_out_nid[i])
3874 			snd_hda_codec_cleanup_stream(codec,
3875 						     mout->hp_out_nid[i]);
3876 	for (i = 0; i < ARRAY_SIZE(mout->extra_out_nid); i++)
3877 		if (mout->extra_out_nid[i])
3878 			snd_hda_codec_cleanup_stream(codec,
3879 						     mout->extra_out_nid[i]);
3880 	mutex_lock(&codec->spdif_mutex);
3881 	if (mout->dig_out_nid && mout->dig_out_used == HDA_DIG_ANALOG_DUP) {
3882 		cleanup_dig_out_stream(codec, mout->dig_out_nid);
3883 		mout->dig_out_used = 0;
3884 	}
3885 	mutex_unlock(&codec->spdif_mutex);
3886 	return 0;
3887 }
3888 EXPORT_SYMBOL_GPL(snd_hda_multi_out_analog_cleanup);
3889 
3890 /**
3891  * snd_hda_get_default_vref - Get the default (mic) VREF pin bits
3892  * @codec: the HDA codec
3893  * @pin: referred pin NID
3894  *
3895  * Guess the suitable VREF pin bits to be set as the pin-control value.
3896  * Note: the function doesn't set the AC_PINCTL_IN_EN bit.
3897  */
snd_hda_get_default_vref(struct hda_codec * codec,hda_nid_t pin)3898 unsigned int snd_hda_get_default_vref(struct hda_codec *codec, hda_nid_t pin)
3899 {
3900 	unsigned int pincap;
3901 	unsigned int oldval;
3902 	oldval = snd_hda_codec_read(codec, pin, 0,
3903 				    AC_VERB_GET_PIN_WIDGET_CONTROL, 0);
3904 	pincap = snd_hda_query_pin_caps(codec, pin);
3905 	pincap = (pincap & AC_PINCAP_VREF) >> AC_PINCAP_VREF_SHIFT;
3906 	/* Exception: if the default pin setup is vref50, we give it priority */
3907 	if ((pincap & AC_PINCAP_VREF_80) && oldval != PIN_VREF50)
3908 		return AC_PINCTL_VREF_80;
3909 	else if (pincap & AC_PINCAP_VREF_50)
3910 		return AC_PINCTL_VREF_50;
3911 	else if (pincap & AC_PINCAP_VREF_100)
3912 		return AC_PINCTL_VREF_100;
3913 	else if (pincap & AC_PINCAP_VREF_GRD)
3914 		return AC_PINCTL_VREF_GRD;
3915 	return AC_PINCTL_VREF_HIZ;
3916 }
3917 EXPORT_SYMBOL_GPL(snd_hda_get_default_vref);
3918 
3919 /**
3920  * snd_hda_correct_pin_ctl - correct the pin ctl value for matching with the pin cap
3921  * @codec: the HDA codec
3922  * @pin: referred pin NID
3923  * @val: pin ctl value to audit
3924  */
snd_hda_correct_pin_ctl(struct hda_codec * codec,hda_nid_t pin,unsigned int val)3925 unsigned int snd_hda_correct_pin_ctl(struct hda_codec *codec,
3926 				     hda_nid_t pin, unsigned int val)
3927 {
3928 	static const unsigned int cap_lists[][2] = {
3929 		{ AC_PINCTL_VREF_100, AC_PINCAP_VREF_100 },
3930 		{ AC_PINCTL_VREF_80, AC_PINCAP_VREF_80 },
3931 		{ AC_PINCTL_VREF_50, AC_PINCAP_VREF_50 },
3932 		{ AC_PINCTL_VREF_GRD, AC_PINCAP_VREF_GRD },
3933 	};
3934 	unsigned int cap;
3935 
3936 	if (!val)
3937 		return 0;
3938 	cap = snd_hda_query_pin_caps(codec, pin);
3939 	if (!cap)
3940 		return val; /* don't know what to do... */
3941 
3942 	if (val & AC_PINCTL_OUT_EN) {
3943 		if (!(cap & AC_PINCAP_OUT))
3944 			val &= ~(AC_PINCTL_OUT_EN | AC_PINCTL_HP_EN);
3945 		else if ((val & AC_PINCTL_HP_EN) && !(cap & AC_PINCAP_HP_DRV))
3946 			val &= ~AC_PINCTL_HP_EN;
3947 	}
3948 
3949 	if (val & AC_PINCTL_IN_EN) {
3950 		if (!(cap & AC_PINCAP_IN))
3951 			val &= ~(AC_PINCTL_IN_EN | AC_PINCTL_VREFEN);
3952 		else {
3953 			unsigned int vcap, vref;
3954 			int i;
3955 			vcap = (cap & AC_PINCAP_VREF) >> AC_PINCAP_VREF_SHIFT;
3956 			vref = val & AC_PINCTL_VREFEN;
3957 			for (i = 0; i < ARRAY_SIZE(cap_lists); i++) {
3958 				if (vref == cap_lists[i][0] &&
3959 				    !(vcap & cap_lists[i][1])) {
3960 					if (i == ARRAY_SIZE(cap_lists) - 1)
3961 						vref = AC_PINCTL_VREF_HIZ;
3962 					else
3963 						vref = cap_lists[i + 1][0];
3964 				}
3965 			}
3966 			val &= ~AC_PINCTL_VREFEN;
3967 			val |= vref;
3968 		}
3969 	}
3970 
3971 	return val;
3972 }
3973 EXPORT_SYMBOL_GPL(snd_hda_correct_pin_ctl);
3974 
3975 /**
3976  * _snd_hda_set_pin_ctl - Helper to set pin ctl value
3977  * @codec: the HDA codec
3978  * @pin: referred pin NID
3979  * @val: pin control value to set
3980  * @cached: access over codec pinctl cache or direct write
3981  *
3982  * This function is a helper to set a pin ctl value more safely.
3983  * It corrects the pin ctl value via snd_hda_correct_pin_ctl(), stores the
3984  * value in pin target array via snd_hda_codec_set_pin_target(), then
3985  * actually writes the value via either snd_hda_codec_write_cache() or
3986  * snd_hda_codec_write() depending on @cached flag.
3987  */
_snd_hda_set_pin_ctl(struct hda_codec * codec,hda_nid_t pin,unsigned int val,bool cached)3988 int _snd_hda_set_pin_ctl(struct hda_codec *codec, hda_nid_t pin,
3989 			 unsigned int val, bool cached)
3990 {
3991 	val = snd_hda_correct_pin_ctl(codec, pin, val);
3992 	snd_hda_codec_set_pin_target(codec, pin, val);
3993 	if (cached)
3994 		return snd_hda_codec_write_cache(codec, pin, 0,
3995 				AC_VERB_SET_PIN_WIDGET_CONTROL, val);
3996 	else
3997 		return snd_hda_codec_write(codec, pin, 0,
3998 					   AC_VERB_SET_PIN_WIDGET_CONTROL, val);
3999 }
4000 EXPORT_SYMBOL_GPL(_snd_hda_set_pin_ctl);
4001 
4002 /**
4003  * snd_hda_add_imux_item - Add an item to input_mux
4004  * @codec: the HDA codec
4005  * @imux: imux helper object
4006  * @label: the name of imux item to assign
4007  * @index: index number of imux item to assign
4008  * @type_idx: pointer to store the resultant label index
4009  *
4010  * When the same label is used already in the existing items, the number
4011  * suffix is appended to the label.  This label index number is stored
4012  * to type_idx when non-NULL pointer is given.
4013  */
snd_hda_add_imux_item(struct hda_codec * codec,struct hda_input_mux * imux,const char * label,int index,int * type_idx)4014 int snd_hda_add_imux_item(struct hda_codec *codec,
4015 			  struct hda_input_mux *imux, const char *label,
4016 			  int index, int *type_idx)
4017 {
4018 	int i, label_idx = 0;
4019 	if (imux->num_items >= HDA_MAX_NUM_INPUTS) {
4020 		codec_err(codec, "hda_codec: Too many imux items!\n");
4021 		return -EINVAL;
4022 	}
4023 	for (i = 0; i < imux->num_items; i++) {
4024 		if (!strncmp(label, imux->items[i].label, strlen(label)))
4025 			label_idx++;
4026 	}
4027 	if (type_idx)
4028 		*type_idx = label_idx;
4029 	if (label_idx > 0)
4030 		snprintf(imux->items[imux->num_items].label,
4031 			 sizeof(imux->items[imux->num_items].label),
4032 			 "%s %d", label, label_idx);
4033 	else
4034 		strscpy(imux->items[imux->num_items].label, label,
4035 			sizeof(imux->items[imux->num_items].label));
4036 	imux->items[imux->num_items].index = index;
4037 	imux->num_items++;
4038 	return 0;
4039 }
4040 EXPORT_SYMBOL_GPL(snd_hda_add_imux_item);
4041 
4042 /**
4043  * snd_hda_bus_reset_codecs - Reset the bus
4044  * @bus: HD-audio bus
4045  */
snd_hda_bus_reset_codecs(struct hda_bus * bus)4046 void snd_hda_bus_reset_codecs(struct hda_bus *bus)
4047 {
4048 	struct hda_codec *codec;
4049 
4050 	list_for_each_codec(codec, bus) {
4051 		/* FIXME: maybe a better way needed for forced reset */
4052 		if (current_work() != &codec->jackpoll_work.work)
4053 			cancel_delayed_work_sync(&codec->jackpoll_work);
4054 #ifdef CONFIG_PM
4055 		if (hda_codec_is_power_on(codec)) {
4056 			hda_call_codec_suspend(codec);
4057 			hda_call_codec_resume(codec);
4058 		}
4059 #endif
4060 	}
4061 }
4062 
4063 /**
4064  * snd_print_pcm_bits - Print the supported PCM fmt bits to the string buffer
4065  * @pcm: PCM caps bits
4066  * @buf: the string buffer to write
4067  * @buflen: the max buffer length
4068  *
4069  * used by hda_proc.c and hda_eld.c
4070  */
snd_print_pcm_bits(int pcm,char * buf,int buflen)4071 void snd_print_pcm_bits(int pcm, char *buf, int buflen)
4072 {
4073 	static const unsigned int bits[] = { 8, 16, 20, 24, 32 };
4074 	int i, j;
4075 
4076 	for (i = 0, j = 0; i < ARRAY_SIZE(bits); i++)
4077 		if (pcm & (AC_SUPPCM_BITS_8 << i))
4078 			j += scnprintf(buf + j, buflen - j,  " %d", bits[i]);
4079 
4080 	buf[j] = '\0'; /* necessary when j == 0 */
4081 }
4082 EXPORT_SYMBOL_GPL(snd_print_pcm_bits);
4083 
4084 MODULE_DESCRIPTION("HDA codec core");
4085 MODULE_LICENSE("GPL");
4086