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ASoC: pcm: Add support for DAI multicodec
[mirror_ubuntu-bionic-kernel.git] / sound / soc / soc-dapm.c
CommitLineData
2b97eabc
RP		 1/*
2 * soc-dapm.c -- ALSA SoC Dynamic Audio Power Management
3 *
4 * Copyright 2005 Wolfson Microelectronics PLC.
d331124d 5 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
2b97eabc
RP		 6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
11 *
2b97eabc
RP		 12 * Features:
13 * o Changes power status of internal codec blocks depending on the
14 * dynamic configuration of codec internal audio paths and active
74b8f955 15 * DACs/ADCs.
2b97eabc 16 * o Platform power domain - can support external components i.e. amps and
612a3fec 17 * mic/headphone insertion events.
2b97eabc
RP		 18 * o Automatic Mic Bias support
19 * o Jack insertion power event initiation - e.g. hp insertion will enable
20 * sinks, dacs, etc
612a3fec 21 * o Delayed power down of audio subsystem to reduce pops between a quick
2b97eabc
RP		 22 * device reopen.
23 *
2b97eabc
RP		 24 */
25
26#include <linux/module.h>
27#include <linux/moduleparam.h>
28#include <linux/init.h>
9d0624a7 29#include <linux/async.h>
2b97eabc
RP		 30#include <linux/delay.h>
31#include <linux/pm.h>
32#include <linux/bitops.h>
33#include <linux/platform_device.h>
34#include <linux/jiffies.h>
20496ff3 35#include <linux/debugfs.h>
f1aac484 36#include <linux/pm_runtime.h>
62ea874a 37#include <linux/regulator/consumer.h>
d7e7eb91 38#include <linux/clk.h>
5a0e3ad6 39#include <linux/slab.h>
2b97eabc
RP		 40#include <sound/core.h>
41#include <sound/pcm.h>
42#include <sound/pcm_params.h>
ce6120cc 43#include <sound/soc.h>
2b97eabc
RP		 44#include <sound/initval.h>
45
84e90930
MB		 46#include <trace/events/asoc.h>
47
de02d078
MB		 48#define DAPM_UPDATE_STAT(widget, val) widget->dapm->card->dapm_stats.val++;
49
57295073
LPC		 50static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
51 struct snd_soc_dapm_widget *wsource, struct snd_soc_dapm_widget *wsink,
52 const char *control,
53 int (*connected)(struct snd_soc_dapm_widget *source,
54 struct snd_soc_dapm_widget *sink));
55static struct snd_soc_dapm_widget *
56snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
57 const struct snd_soc_dapm_widget *widget);
58
2b97eabc
RP		 59/* dapm power sequences - make this per codec in the future */
60static int dapm_up_seq[] = {
38357ab2 61 [snd_soc_dapm_pre] = 0,
62ea874a 62 [snd_soc_dapm_regulator_supply] = 1,
d7e7eb91 63 [snd_soc_dapm_clock_supply] = 1,
1dd275b6
MB		 64 [snd_soc_dapm_supply] = 2,
65 [snd_soc_dapm_micbias] = 3,
c74184ed 66 [snd_soc_dapm_dai_link] = 2,
1dd275b6
MB		 67 [snd_soc_dapm_dai_in] = 4,
68 [snd_soc_dapm_dai_out] = 4,
69 [snd_soc_dapm_aif_in] = 4,
70 [snd_soc_dapm_aif_out] = 4,
71 [snd_soc_dapm_mic] = 5,
72 [snd_soc_dapm_mux] = 6,
1dd275b6
MB		 73 [snd_soc_dapm_dac] = 7,
74 [snd_soc_dapm_switch] = 8,
75 [snd_soc_dapm_mixer] = 8,
76 [snd_soc_dapm_mixer_named_ctl] = 8,
77 [snd_soc_dapm_pga] = 9,
78 [snd_soc_dapm_adc] = 10,
79 [snd_soc_dapm_out_drv] = 11,
80 [snd_soc_dapm_hp] = 11,
81 [snd_soc_dapm_spk] = 11,
82 [snd_soc_dapm_line] = 11,
83 [snd_soc_dapm_kcontrol] = 12,
84 [snd_soc_dapm_post] = 13,
2b97eabc 85};
ca9c1aae 86
2b97eabc 87static int dapm_down_seq[] = {
38357ab2 88 [snd_soc_dapm_pre] = 0,
57295073
LPC		 89 [snd_soc_dapm_kcontrol] = 1,
90 [snd_soc_dapm_adc] = 2,
91 [snd_soc_dapm_hp] = 3,
92 [snd_soc_dapm_spk] = 3,
93 [snd_soc_dapm_line] = 3,
94 [snd_soc_dapm_out_drv] = 3,
38357ab2 95 [snd_soc_dapm_pga] = 4,
efc77e36 96 [snd_soc_dapm_switch] = 5,
38357ab2 97 [snd_soc_dapm_mixer_named_ctl] = 5,
e3d4dabd
MB		 98 [snd_soc_dapm_mixer] = 5,
99 [snd_soc_dapm_dac] = 6,
100 [snd_soc_dapm_mic] = 7,
101 [snd_soc_dapm_micbias] = 8,
102 [snd_soc_dapm_mux] = 9,
010ff262
MB		 103 [snd_soc_dapm_aif_in] = 10,
104 [snd_soc_dapm_aif_out] = 10,
4616274d
MB		 105 [snd_soc_dapm_dai_in] = 10,
106 [snd_soc_dapm_dai_out] = 10,
c74184ed 107 [snd_soc_dapm_dai_link] = 11,
c74184ed 108 [snd_soc_dapm_supply] = 12,
1dd275b6
MB		 109 [snd_soc_dapm_clock_supply] = 13,
110 [snd_soc_dapm_regulator_supply] = 13,
111 [snd_soc_dapm_post] = 14,
2b97eabc
RP		 112};
113
f9fa2b18
MB		 114static void dapm_assert_locked(struct snd_soc_dapm_context *dapm)
115{
116 if (dapm->card && dapm->card->instantiated)
117 lockdep_assert_held(&dapm->card->dapm_mutex);
118}
119
12ef193d 120static void pop_wait(u32 pop_time)
15e4c72f
MB		 121{
122 if (pop_time)
123 schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time));
124}
125
fd8d3bc0 126static void pop_dbg(struct device *dev, u32 pop_time, const char *fmt, ...)
15e4c72f
MB		 127{
128 va_list args;
fd8d3bc0 129 char *buf;
15e4c72f 130
fd8d3bc0
JN		 131 if (!pop_time)
132 return;
15e4c72f 133
fd8d3bc0
JN		 134 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
135 if (buf == NULL)
136 return;
15e4c72f 137
fd8d3bc0
JN		 138 va_start(args, fmt);
139 vsnprintf(buf, PAGE_SIZE, fmt, args);
9d01df06 140 dev_info(dev, "%s", buf);
15e4c72f 141 va_end(args);
fd8d3bc0
JN		 142
143 kfree(buf);
15e4c72f
MB		 144}
145
db432b41
MB		 146static bool dapm_dirty_widget(struct snd_soc_dapm_widget *w)
147{
148 return !list_empty(&w->dirty);
149}
150
492c0a18 151static void dapm_mark_dirty(struct snd_soc_dapm_widget *w, const char *reason)
db432b41 152{
f9fa2b18
MB		 153 dapm_assert_locked(w->dapm);
154
75c1f891
MB		 155 if (!dapm_dirty_widget(w)) {
156 dev_vdbg(w->dapm->dev, "Marking %s dirty due to %s\n",
157 w->name, reason);
db432b41 158 list_add_tail(&w->dirty, &w->dapm->card->dapm_dirty);
75c1f891 159 }
db432b41
MB		 160}
161
e2d32ff6
MB		 162void dapm_mark_io_dirty(struct snd_soc_dapm_context *dapm)
163{
164 struct snd_soc_card *card = dapm->card;
165 struct snd_soc_dapm_widget *w;
166
167 mutex_lock(&card->dapm_mutex);
168
169 list_for_each_entry(w, &card->widgets, list) {
170 switch (w->id) {
171 case snd_soc_dapm_input:
172 case snd_soc_dapm_output:
173 dapm_mark_dirty(w, "Rechecking inputs and outputs");
174 break;
175 default:
176 break;
177 }
178 }
179
180 mutex_unlock(&card->dapm_mutex);
181}
182EXPORT_SYMBOL_GPL(dapm_mark_io_dirty);
183
2b97eabc 184/* create a new dapm widget */
88cb4290 185static inline struct snd_soc_dapm_widget *dapm_cnew_widget(
2b97eabc
RP		 186 const struct snd_soc_dapm_widget *_widget)
187{
88cb4290 188 return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL);
2b97eabc
RP		 189}
190
e84357f7 191struct dapm_kcontrol_data {
cf7c1de2 192 unsigned int value;
57295073 193 struct snd_soc_dapm_widget *widget;
5106b92f 194 struct list_head paths;
2c75bdf3 195 struct snd_soc_dapm_widget_list *wlist;
e84357f7
LPC		 196};
197
198static int dapm_kcontrol_data_alloc(struct snd_soc_dapm_widget *widget,
199 struct snd_kcontrol *kcontrol)
200{
201 struct dapm_kcontrol_data *data;
57295073 202 struct soc_mixer_control *mc;
e84357f7 203
2c75bdf3 204 data = kzalloc(sizeof(*data), GFP_KERNEL);
e84357f7
LPC		 205 if (!data) {
206 dev_err(widget->dapm->dev,
207 "ASoC: can't allocate kcontrol data for %s\n",
208 widget->name);
209 return -ENOMEM;
210 }
211
5106b92f 212 INIT_LIST_HEAD(&data->paths);
e84357f7 213
57295073
LPC		 214 switch (widget->id) {
215 case snd_soc_dapm_switch:
216 case snd_soc_dapm_mixer:
217 case snd_soc_dapm_mixer_named_ctl:
218 mc = (struct soc_mixer_control *)kcontrol->private_value;
219
220 if (mc->autodisable) {
221 struct snd_soc_dapm_widget template;
222
223 memset(&template, 0, sizeof(template));
224 template.reg = mc->reg;
225 template.mask = (1 << fls(mc->max)) - 1;
226 template.shift = mc->shift;
227 if (mc->invert)
228 template.off_val = mc->max;
229 else
230 template.off_val = 0;
231 template.on_val = template.off_val;
232 template.id = snd_soc_dapm_kcontrol;
233 template.name = kcontrol->id.name;
234
2daabd78
LPC		 235 data->value = template.on_val;
236
57295073
LPC		 237 data->widget = snd_soc_dapm_new_control(widget->dapm,
238 &template);
239 if (!data->widget) {
240 kfree(data);
241 return -ENOMEM;
242 }
243 }
244 break;
245 default:
246 break;
247 }
248
e84357f7
LPC		 249 kcontrol->private_data = data;
250
251 return 0;
252}
253
254static void dapm_kcontrol_free(struct snd_kcontrol *kctl)
255{
256 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kctl);
2c75bdf3 257 kfree(data->wlist);
e84357f7
LPC		 258 kfree(data);
259}
260
261static struct snd_soc_dapm_widget_list *dapm_kcontrol_get_wlist(
262 const struct snd_kcontrol *kcontrol)
263{
264 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
265
2c75bdf3 266 return data->wlist;
e84357f7
LPC		 267}
268
269static int dapm_kcontrol_add_widget(struct snd_kcontrol *kcontrol,
270 struct snd_soc_dapm_widget *widget)
271{
272 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
2c75bdf3
LPC		 273 struct snd_soc_dapm_widget_list *new_wlist;
274 unsigned int n;
e84357f7 275
2c75bdf3
LPC		 276 if (data->wlist)
277 n = data->wlist->num_widgets + 1;
278 else
279 n = 1;
280
281 new_wlist = krealloc(data->wlist,
282 sizeof(*new_wlist) + sizeof(widget) * n, GFP_KERNEL);
283 if (!new_wlist)
e84357f7
LPC		 284 return -ENOMEM;
285
2c75bdf3
LPC		 286 new_wlist->widgets[n - 1] = widget;
287 new_wlist->num_widgets = n;
e84357f7 288
2c75bdf3 289 data->wlist = new_wlist;
e84357f7
LPC		 290
291 return 0;
292}
293
5106b92f
LPC		 294static void dapm_kcontrol_add_path(const struct snd_kcontrol *kcontrol,
295 struct snd_soc_dapm_path *path)
296{
297 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
298
299 list_add_tail(&path->list_kcontrol, &data->paths);
57295073
LPC		 300
301 if (data->widget) {
302 snd_soc_dapm_add_path(data->widget->dapm, data->widget,
303 path->source, NULL, NULL);
304 }
305}
306
307static bool dapm_kcontrol_is_powered(const struct snd_kcontrol *kcontrol)
308{
309 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
310
311 if (!data->widget)
312 return true;
313
314 return data->widget->power;
5106b92f
LPC		 315}
316
317static struct list_head *dapm_kcontrol_get_path_list(
318 const struct snd_kcontrol *kcontrol)
319{
320 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
321
322 return &data->paths;
323}
324
325#define dapm_kcontrol_for_each_path(path, kcontrol) \
326 list_for_each_entry(path, dapm_kcontrol_get_path_list(kcontrol), \
327 list_kcontrol)
328
cf7c1de2
LPC		 329static unsigned int dapm_kcontrol_get_value(const struct snd_kcontrol *kcontrol)
330{
331 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
332
333 return data->value;
334}
335
336static bool dapm_kcontrol_set_value(const struct snd_kcontrol *kcontrol,
337 unsigned int value)
338{
339 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
340
341 if (data->value == value)
342 return false;
343
57295073
LPC		 344 if (data->widget)
345 data->widget->on_val = value;
346
cf7c1de2
LPC		 347 data->value = value;
348
349 return true;
350}
351
ce0fc93a
LPC		 352/**
353 * snd_soc_dapm_kcontrol_dapm() - Returns the dapm context associated to a
354 * kcontrol
355 * @kcontrol: The kcontrol
356 *
357 * Note: This function must only be used on kcontrols that are known to have
358 * been registered for a CODEC. Otherwise the behaviour is undefined.
359 */
360struct snd_soc_dapm_context *snd_soc_dapm_kcontrol_dapm(
361 struct snd_kcontrol *kcontrol)
362{
363 return dapm_kcontrol_get_wlist(kcontrol)->widgets[0]->dapm;
364}
365EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_dapm);
366
eee5d7f9
LPC		 367/**
368 * snd_soc_dapm_kcontrol_codec() - Returns the codec associated to a kcontrol
369 * @kcontrol: The kcontrol
370 */
371struct snd_soc_codec *snd_soc_dapm_kcontrol_codec(struct snd_kcontrol *kcontrol)
372{
ce0fc93a 373 return snd_soc_dapm_to_codec(snd_soc_dapm_kcontrol_dapm(kcontrol));
eee5d7f9
LPC		 374}
375EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_codec);
376
6c120e19
LG		 377static void dapm_reset(struct snd_soc_card *card)
378{
379 struct snd_soc_dapm_widget *w;
380
f9fa2b18
MB		 381 lockdep_assert_held(&card->dapm_mutex);
382
6c120e19
LG		 383 memset(&card->dapm_stats, 0, sizeof(card->dapm_stats));
384
385 list_for_each_entry(w, &card->widgets, list) {
39eb5fd1 386 w->new_power = w->power;
6c120e19
LG		 387 w->power_checked = false;
388 w->inputs = -1;
389 w->outputs = -1;
390 }
391}
392
94f99c87
LPC		 393static const char *soc_dapm_prefix(struct snd_soc_dapm_context *dapm)
394{
395 if (!dapm->component)
396 return NULL;
397 return dapm->component->name_prefix;
398}
399
ce0fc93a 400static int soc_dapm_read(struct snd_soc_dapm_context *dapm, int reg,
f7d3c170 401 unsigned int *value)
0445bdf4 402{
ce0fc93a 403 if (!dapm->component)
e2c330b9 404 return -EIO;
ce0fc93a 405 return snd_soc_component_read(dapm->component, reg, value);
49575fb5
LG		 406}
407
ce0fc93a 408static int soc_dapm_update_bits(struct snd_soc_dapm_context *dapm,
e2c330b9 409 int reg, unsigned int mask, unsigned int value)
49575fb5 410{
ce0fc93a 411 if (!dapm->component)
e2c330b9 412 return -EIO;
ce0fc93a 413 return snd_soc_component_update_bits_async(dapm->component, reg,
e2c330b9 414 mask, value);
49575fb5
LG		 415}
416
ce0fc93a
LPC		 417static int soc_dapm_test_bits(struct snd_soc_dapm_context *dapm,
418 int reg, unsigned int mask, unsigned int value)
419{
420 if (!dapm->component)
421 return -EIO;
422 return snd_soc_component_test_bits(dapm->component, reg, mask, value);
423}
424
eb270e98
MB		 425static void soc_dapm_async_complete(struct snd_soc_dapm_context *dapm)
426{
e2c330b9
LPC		 427 if (dapm->component)
428 snd_soc_component_async_complete(dapm->component);
0445bdf4
LG		 429}
430
452c5eaa
MB		 431/**
432 * snd_soc_dapm_set_bias_level - set the bias level for the system
ed5a4c47 433 * @dapm: DAPM context
452c5eaa
MB		 434 * @level: level to configure
435 *
436 * Configure the bias (power) levels for the SoC audio device.
437 *
438 * Returns 0 for success else error.
439 */
ed5a4c47 440static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm,
ce6120cc 441 enum snd_soc_bias_level level)
452c5eaa 442{
ed5a4c47 443 struct snd_soc_card *card = dapm->card;
452c5eaa
MB		 444 int ret = 0;
445
84e90930
MB		 446 trace_snd_soc_bias_level_start(card, level);
447
f0fba2ad 448 if (card && card->set_bias_level)
d4c6005f 449 ret = card->set_bias_level(card, dapm, level);
171ec6b0
MB		 450 if (ret != 0)
451 goto out;
452
68f831c2
LPC		 453 if (dapm->set_bias_level)
454 ret = dapm->set_bias_level(dapm, level);
455 else if (!card || dapm != &card->dapm)
4123128e
LG		 456 dapm->bias_level = level;
457
171ec6b0
MB		 458 if (ret != 0)
459 goto out;
460
461 if (card && card->set_bias_level_post)
d4c6005f 462 ret = card->set_bias_level_post(card, dapm, level);
171ec6b0 463out:
84e90930
MB		 464 trace_snd_soc_bias_level_done(card, level);
465
452c5eaa
MB		 466 return ret;
467}
468
74b8f955 469/* connect mux widget to its interconnecting audio paths */
ce6120cc 470static int dapm_connect_mux(struct snd_soc_dapm_context *dapm,
2b97eabc
RP		 471 struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest,
472 struct snd_soc_dapm_path *path, const char *control_name,
473 const struct snd_kcontrol_new *kcontrol)
2b97eabc 474{
2b97eabc 475 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
234c0b8f 476 unsigned int val, item;
2b97eabc 477 int i;
24ff33ac 478
234c0b8f 479 if (e->reg != SND_SOC_NOPM) {
ce0fc93a 480 soc_dapm_read(dapm, e->reg, &val);
234c0b8f
LPC		 481 val = (val >> e->shift_l) & e->mask;
482 item = snd_soc_enum_val_to_item(e, val);
483 } else {
24ff33ac
DP		 484 /* since a virtual mux has no backing registers to
485 * decide which path to connect, it will try to match
486 * with the first enumeration. This is to ensure
487 * that the default mux choice (the first) will be
488 * correctly powered up during initialization.
489 */
234c0b8f 490 item = 0;
24ff33ac 491 }
2e72f8e3 492
9a8d38db 493 for (i = 0; i < e->items; i++) {
2b97eabc 494 if (!(strcmp(control_name, e->texts[i]))) {
8ddab3f5 495 list_add(&path->list, &dapm->card->paths);
2b97eabc
RP		 496 list_add(&path->list_sink, &dest->sources);
497 list_add(&path->list_source, &src->sinks);
498 path->name = (char*)e->texts[i];
234c0b8f
LPC		 499 if (i == item)
500 path->connect = 1;
501 else
502 path->connect = 0;
2b97eabc
RP		 503 return 0;
504 }
505 }
506
507 return -ENODEV;
508}
509
234c0b8f
LPC		 510/* set up initial codec paths */
511static void dapm_set_mixer_path_status(struct snd_soc_dapm_widget *w,
512 struct snd_soc_dapm_path *p, int i)
513{
514 struct soc_mixer_control *mc = (struct soc_mixer_control *)
515 w->kcontrol_news[i].private_value;
516 unsigned int reg = mc->reg;
517 unsigned int shift = mc->shift;
518 unsigned int max = mc->max;
519 unsigned int mask = (1 << fls(max)) - 1;
520 unsigned int invert = mc->invert;
521 unsigned int val;
522
523 if (reg != SND_SOC_NOPM) {
ce0fc93a 524 soc_dapm_read(w->dapm, reg, &val);
234c0b8f
LPC		 525 val = (val >> shift) & mask;
526 if (invert)
527 val = max - val;
528 p->connect = !!val;
529 } else {
530 p->connect = 0;
531 }
532}
533
74b8f955 534/* connect mixer widget to its interconnecting audio paths */
ce6120cc 535static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm,
2b97eabc
RP		 536 struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest,
537 struct snd_soc_dapm_path *path, const char *control_name)
538{
539 int i;
540
541 /* search for mixer kcontrol */
542 for (i = 0; i < dest->num_kcontrols; i++) {
82cfecdc 543 if (!strcmp(control_name, dest->kcontrol_news[i].name)) {
8ddab3f5 544 list_add(&path->list, &dapm->card->paths);
2b97eabc
RP		 545 list_add(&path->list_sink, &dest->sources);
546 list_add(&path->list_source, &src->sinks);
82cfecdc 547 path->name = dest->kcontrol_news[i].name;
234c0b8f 548 dapm_set_mixer_path_status(dest, path, i);
2b97eabc
RP		 549 return 0;
550 }
551 }
552 return -ENODEV;
553}
554
af46800b 555static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context *dapm,
1007da06 556 struct snd_soc_dapm_widget *kcontrolw,
af46800b
SW		 557 const struct snd_kcontrol_new *kcontrol_new,
558 struct snd_kcontrol **kcontrol)
559{
560 struct snd_soc_dapm_widget *w;
561 int i;
562
563 *kcontrol = NULL;
564
565 list_for_each_entry(w, &dapm->card->widgets, list) {
1007da06
SW		 566 if (w == kcontrolw || w->dapm != kcontrolw->dapm)
567 continue;
af46800b
SW		 568 for (i = 0; i < w->num_kcontrols; i++) {
569 if (&w->kcontrol_news[i] == kcontrol_new) {
570 if (w->kcontrols)
571 *kcontrol = w->kcontrols[i];
572 return 1;
573 }
574 }
575 }
576
577 return 0;
578}
579
85762e71
SW		 580/*
581 * Determine if a kcontrol is shared. If it is, look it up. If it isn't,
582 * create it. Either way, add the widget into the control's widget list
583 */
584static int dapm_create_or_share_mixmux_kcontrol(struct snd_soc_dapm_widget *w,
946d92a1 585 int kci)
2b97eabc 586{
4b80b8c2 587 struct snd_soc_dapm_context *dapm = w->dapm;
12ea2c78 588 struct snd_card *card = dapm->card->snd_card;
efb7ac3f 589 const char *prefix;
85762e71
SW		 590 size_t prefix_len;
591 int shared;
592 struct snd_kcontrol *kcontrol;
85762e71 593 bool wname_in_long_name, kcname_in_long_name;
85762e71
SW		 594 char *long_name;
595 const char *name;
596 int ret;
efb7ac3f 597
94f99c87 598 prefix = soc_dapm_prefix(dapm);
3e5ff4df
MB		 599 if (prefix)
600 prefix_len = strlen(prefix) + 1;
601 else
602 prefix_len = 0;
603
85762e71
SW		 604 shared = dapm_is_shared_kcontrol(dapm, w, &w->kcontrol_news[kci],
605 &kcontrol);
2b97eabc 606
85762e71
SW		 607 if (!kcontrol) {
608 if (shared) {
609 wname_in_long_name = false;
610 kcname_in_long_name = true;
611 } else {
612 switch (w->id) {
613 case snd_soc_dapm_switch:
614 case snd_soc_dapm_mixer:
615 wname_in_long_name = true;
616 kcname_in_long_name = true;
617 break;
618 case snd_soc_dapm_mixer_named_ctl:
619 wname_in_long_name = false;
620 kcname_in_long_name = true;
621 break;
622 case snd_soc_dapm_mux:
85762e71
SW		 623 wname_in_long_name = true;
624 kcname_in_long_name = false;
625 break;
626 default:
85762e71 627 return -EINVAL;
82cd8764 628 }
85762e71
SW		 629 }
630
631 if (wname_in_long_name && kcname_in_long_name) {
85762e71
SW		 632 /*
633 * The control will get a prefix from the control
634 * creation process but we're also using the same
635 * prefix for widgets so cut the prefix off the
636 * front of the widget name.
ca9c1aae 637 */
2b581074 638 long_name = kasprintf(GFP_KERNEL, "%s %s",
85762e71
SW		 639 w->name + prefix_len,
640 w->kcontrol_news[kci].name);
e84357f7 641 if (long_name == NULL)
2b581074 642 return -ENOMEM;
85762e71
SW		 643
644 name = long_name;
645 } else if (wname_in_long_name) {
646 long_name = NULL;
647 name = w->name + prefix_len;
648 } else {
649 long_name = NULL;
650 name = w->kcontrol_news[kci].name;
651 }
ca9c1aae 652
e84357f7 653 kcontrol = snd_soc_cnew(&w->kcontrol_news[kci], NULL, name,
85762e71 654 prefix);
656ca9d3 655 kfree(long_name);
9356e9d5
LPC		 656 if (!kcontrol)
657 return -ENOMEM;
658 kcontrol->private_free = dapm_kcontrol_free;
e84357f7
LPC		 659
660 ret = dapm_kcontrol_data_alloc(w, kcontrol);
661 if (ret) {
662 snd_ctl_free_one(kcontrol);
663 return ret;
664 }
665
85762e71
SW		 666 ret = snd_ctl_add(card, kcontrol);
667 if (ret < 0) {
668 dev_err(dapm->dev,
669 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
670 w->name, name, ret);
85762e71
SW		 671 return ret;
672 }
85762e71 673 }
2b97eabc 674
2c75bdf3
LPC		 675 ret = dapm_kcontrol_add_widget(kcontrol, w);
676 if (ret)
677 return ret;
678
85762e71 679 w->kcontrols[kci] = kcontrol;
ca9c1aae 680
85762e71
SW		 681 return 0;
682}
219b93f5 683
85762e71
SW		 684/* create new dapm mixer control */
685static int dapm_new_mixer(struct snd_soc_dapm_widget *w)
686{
687 int i, ret;
688 struct snd_soc_dapm_path *path;
689
690 /* add kcontrol */
691 for (i = 0; i < w->num_kcontrols; i++) {
692 /* match name */
693 list_for_each_entry(path, &w->sources, list_sink) {
694 /* mixer/mux paths name must match control name */
695 if (path->name != (char *)w->kcontrol_news[i].name)
696 continue;
697
698 if (w->kcontrols[i]) {
5106b92f 699 dapm_kcontrol_add_path(w->kcontrols[i], path);
85762e71 700 continue;
2b97eabc 701 }
85762e71 702
946d92a1 703 ret = dapm_create_or_share_mixmux_kcontrol(w, i);
85762e71
SW		 704 if (ret < 0)
705 return ret;
946d92a1
MB		 706
707 dapm_kcontrol_add_path(w->kcontrols[i], path);
2b97eabc
RP		 708 }
709 }
85762e71
SW		 710
711 return 0;
2b97eabc
RP		 712}
713
714/* create new dapm mux control */
4b80b8c2 715static int dapm_new_mux(struct snd_soc_dapm_widget *w)
2b97eabc 716{
4b80b8c2 717 struct snd_soc_dapm_context *dapm = w->dapm;
85762e71 718 struct snd_soc_dapm_path *path;
af46800b 719 int ret;
2b97eabc 720
af46800b
SW		 721 if (w->num_kcontrols != 1) {
722 dev_err(dapm->dev,
30a6a1a4 723 "ASoC: mux %s has incorrect number of controls\n",
af46800b 724 w->name);
2b97eabc
RP		 725 return -EINVAL;
726 }
727
fe581391 728 if (list_empty(&w->sources)) {
85762e71
SW		 729 dev_err(dapm->dev, "ASoC: mux %s has no paths\n", w->name);
730 return -EINVAL;
af46800b 731 }
ce6120cc 732
946d92a1 733 ret = dapm_create_or_share_mixmux_kcontrol(w, 0);
85762e71
SW		 734 if (ret < 0)
735 return ret;
fad59888 736
2b97eabc 737 list_for_each_entry(path, &w->sources, list_sink)
5106b92f 738 dapm_kcontrol_add_path(w->kcontrols[0], path);
2b97eabc 739
af46800b 740 return 0;
2b97eabc
RP		 741}
742
743/* create new dapm volume control */
4b80b8c2 744static int dapm_new_pga(struct snd_soc_dapm_widget *w)
2b97eabc 745{
a6c65736 746 if (w->num_kcontrols)
f7d41ae8 747 dev_err(w->dapm->dev,
30a6a1a4 748 "ASoC: PGA controls not supported: '%s'\n", w->name);
2b97eabc 749
a6c65736 750 return 0;
2b97eabc
RP		 751}
752
753/* reset 'walked' bit for each dapm path */
1059ecfa
RT		 754static void dapm_clear_walk_output(struct snd_soc_dapm_context *dapm,
755 struct list_head *sink)
2b97eabc
RP		 756{
757 struct snd_soc_dapm_path *p;
758
1059ecfa
RT		 759 list_for_each_entry(p, sink, list_source) {
760 if (p->walked) {
761 p->walked = 0;
762 dapm_clear_walk_output(dapm, &p->sink->sinks);
763 }
764 }
2b97eabc
RP		 765}
766
1059ecfa
RT		 767static void dapm_clear_walk_input(struct snd_soc_dapm_context *dapm,
768 struct list_head *source)
2b97eabc
RP		 769{
770 struct snd_soc_dapm_path *p;
771
1059ecfa
RT		 772 list_for_each_entry(p, source, list_sink) {
773 if (p->walked) {
774 p->walked = 0;
775 dapm_clear_walk_input(dapm, &p->source->sources);
776 }
777 }
2b97eabc
RP		 778}
779
1059ecfa 780
9949788b
MB		 781/* We implement power down on suspend by checking the power state of
782 * the ALSA card - when we are suspending the ALSA state for the card
783 * is set to D3.
784 */
785static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget)
786{
12ea2c78 787 int level = snd_power_get_state(widget->dapm->card->snd_card);
9949788b 788
f0fba2ad 789 switch (level) {
9949788b
MB		 790 case SNDRV_CTL_POWER_D3hot:
791 case SNDRV_CTL_POWER_D3cold:
1547aba9 792 if (widget->ignore_suspend)
30a6a1a4 793 dev_dbg(widget->dapm->dev, "ASoC: %s ignoring suspend\n",
f7d41ae8 794 widget->name);
1547aba9 795 return widget->ignore_suspend;
9949788b
MB		 796 default:
797 return 1;
798 }
799}
800
ec2e3031
LG		 801/* add widget to list if it's not already in the list */
802static int dapm_list_add_widget(struct snd_soc_dapm_widget_list **list,
803 struct snd_soc_dapm_widget *w)
804{
805 struct snd_soc_dapm_widget_list *wlist;
806 int wlistsize, wlistentries, i;
807
808 if (*list == NULL)
809 return -EINVAL;
810
811 wlist = *list;
812
813 /* is this widget already in the list */
814 for (i = 0; i < wlist->num_widgets; i++) {
815 if (wlist->widgets[i] == w)
816 return 0;
817 }
818
819 /* allocate some new space */
820 wlistentries = wlist->num_widgets + 1;
821 wlistsize = sizeof(struct snd_soc_dapm_widget_list) +
822 wlistentries * sizeof(struct snd_soc_dapm_widget *);
823 *list = krealloc(wlist, wlistsize, GFP_KERNEL);
824 if (*list == NULL) {
30a6a1a4 825 dev_err(w->dapm->dev, "ASoC: can't allocate widget list for %s\n",
ec2e3031
LG		 826 w->name);
827 return -ENOMEM;
828 }
829 wlist = *list;
830
831 /* insert the widget */
30a6a1a4 832 dev_dbg(w->dapm->dev, "ASoC: added %s in widget list pos %d\n",
ec2e3031
LG		 833 w->name, wlist->num_widgets);
834
835 wlist->widgets[wlist->num_widgets] = w;
836 wlist->num_widgets++;
837 return 1;
838}
839
2b97eabc
RP		 840/*
841 * Recursively check for a completed path to an active or physically connected
842 * output widget. Returns number of complete paths.
843 */
ec2e3031
LG		 844static int is_connected_output_ep(struct snd_soc_dapm_widget *widget,
845 struct snd_soc_dapm_widget_list **list)
2b97eabc
RP		 846{
847 struct snd_soc_dapm_path *path;
848 int con = 0;
849
024dc078
MB		 850 if (widget->outputs >= 0)
851 return widget->outputs;
852
de02d078
MB		 853 DAPM_UPDATE_STAT(widget, path_checks);
854
62ea874a
MB		 855 switch (widget->id) {
856 case snd_soc_dapm_supply:
857 case snd_soc_dapm_regulator_supply:
d7e7eb91 858 case snd_soc_dapm_clock_supply:
57295073 859 case snd_soc_dapm_kcontrol:
246d0a17 860 return 0;
62ea874a
MB		 861 default:
862 break;
863 }
246d0a17 864
010ff262
MB		 865 switch (widget->id) {
866 case snd_soc_dapm_adc:
867 case snd_soc_dapm_aif_out:
4616274d 868 case snd_soc_dapm_dai_out:
024dc078
MB		 869 if (widget->active) {
870 widget->outputs = snd_soc_dapm_suspend_check(widget);
871 return widget->outputs;
872 }
010ff262
MB		 873 default:
874 break;
875 }
2b97eabc
RP		 876
877 if (widget->connected) {
878 /* connected pin ? */
024dc078
MB		 879 if (widget->id == snd_soc_dapm_output && !widget->ext) {
880 widget->outputs = snd_soc_dapm_suspend_check(widget);
881 return widget->outputs;
882 }
2b97eabc
RP		 883
884 /* connected jack or spk ? */
024dc078
MB		 885 if (widget->id == snd_soc_dapm_hp ||
886 widget->id == snd_soc_dapm_spk ||
887 (widget->id == snd_soc_dapm_line &&
888 !list_empty(&widget->sources))) {
889 widget->outputs = snd_soc_dapm_suspend_check(widget);
890 return widget->outputs;
891 }
2b97eabc
RP		 892 }
893
894 list_for_each_entry(path, &widget->sinks, list_source) {
e56235e0
MB		 895 DAPM_UPDATE_STAT(widget, neighbour_checks);
896
bf3a9e13
MB		 897 if (path->weak)
898 continue;
899
8af294b4
MB		 900 if (path->walking)
901 return 1;
902
2b97eabc
RP		 903 if (path->walked)
904 continue;
905
ec2e3031
LG		 906 trace_snd_soc_dapm_output_path(widget, path);
907
2b97eabc
RP		 908 if (path->sink && path->connect) {
909 path->walked = 1;
8af294b4 910 path->walking = 1;
ec2e3031
LG		 911
912 /* do we need to add this widget to the list ? */
913 if (list) {
914 int err;
915 err = dapm_list_add_widget(list, path->sink);
916 if (err < 0) {
30a6a1a4
LG		 917 dev_err(widget->dapm->dev,
918 "ASoC: could not add widget %s\n",
ec2e3031 919 widget->name);
8af294b4 920 path->walking = 0;
ec2e3031
LG		 921 return con;
922 }
923 }
924
925 con += is_connected_output_ep(path->sink, list);
8af294b4
MB		 926
927 path->walking = 0;
2b97eabc
RP		 928 }
929 }
930
024dc078
MB		 931 widget->outputs = con;
932
2b97eabc
RP		 933 return con;
934}
935
936/*
937 * Recursively check for a completed path to an active or physically connected
938 * input widget. Returns number of complete paths.
939 */
ec2e3031
LG		 940static int is_connected_input_ep(struct snd_soc_dapm_widget *widget,
941 struct snd_soc_dapm_widget_list **list)
2b97eabc
RP		 942{
943 struct snd_soc_dapm_path *path;
944 int con = 0;
945
024dc078
MB		 946 if (widget->inputs >= 0)
947 return widget->inputs;
948
de02d078
MB		 949 DAPM_UPDATE_STAT(widget, path_checks);
950
62ea874a
MB		 951 switch (widget->id) {
952 case snd_soc_dapm_supply:
953 case snd_soc_dapm_regulator_supply:
d7e7eb91 954 case snd_soc_dapm_clock_supply:
57295073 955 case snd_soc_dapm_kcontrol:
246d0a17 956 return 0;
62ea874a
MB		 957 default:
958 break;
959 }
246d0a17 960
2b97eabc 961 /* active stream ? */
010ff262
MB		 962 switch (widget->id) {
963 case snd_soc_dapm_dac:
964 case snd_soc_dapm_aif_in:
4616274d 965 case snd_soc_dapm_dai_in:
024dc078
MB		 966 if (widget->active) {
967 widget->inputs = snd_soc_dapm_suspend_check(widget);
968 return widget->inputs;
969 }
010ff262
MB		 970 default:
971 break;
972 }
2b97eabc
RP		 973
974 if (widget->connected) {
975 /* connected pin ? */
024dc078
MB		 976 if (widget->id == snd_soc_dapm_input && !widget->ext) {
977 widget->inputs = snd_soc_dapm_suspend_check(widget);
978 return widget->inputs;
979 }
2b97eabc
RP		 980
981 /* connected VMID/Bias for lower pops */
024dc078
MB		 982 if (widget->id == snd_soc_dapm_vmid) {
983 widget->inputs = snd_soc_dapm_suspend_check(widget);
984 return widget->inputs;
985 }
2b97eabc
RP		 986
987 /* connected jack ? */
eaeae5d9 988 if (widget->id == snd_soc_dapm_mic ||
024dc078
MB		 989 (widget->id == snd_soc_dapm_line &&
990 !list_empty(&widget->sinks))) {
991 widget->inputs = snd_soc_dapm_suspend_check(widget);
992 return widget->inputs;
993 }
994
1ab97c8c
MB		 995 /* signal generator */
996 if (widget->id == snd_soc_dapm_siggen) {
997 widget->inputs = snd_soc_dapm_suspend_check(widget);
998 return widget->inputs;
999 }
2b97eabc
RP		 1000 }
1001
1002 list_for_each_entry(path, &widget->sources, list_sink) {
e56235e0
MB		 1003 DAPM_UPDATE_STAT(widget, neighbour_checks);
1004
bf3a9e13
MB		 1005 if (path->weak)
1006 continue;
1007
8af294b4
MB		 1008 if (path->walking)
1009 return 1;
1010
2b97eabc
RP		 1011 if (path->walked)
1012 continue;
1013
ec2e3031
LG		 1014 trace_snd_soc_dapm_input_path(widget, path);
1015
2b97eabc
RP		 1016 if (path->source && path->connect) {
1017 path->walked = 1;
8af294b4 1018 path->walking = 1;
ec2e3031
LG		 1019
1020 /* do we need to add this widget to the list ? */
1021 if (list) {
1022 int err;
90c6ce0d 1023 err = dapm_list_add_widget(list, path->source);
ec2e3031 1024 if (err < 0) {
30a6a1a4
LG		 1025 dev_err(widget->dapm->dev,
1026 "ASoC: could not add widget %s\n",
ec2e3031 1027 widget->name);
8af294b4 1028 path->walking = 0;
ec2e3031
LG		 1029 return con;
1030 }
1031 }
1032
1033 con += is_connected_input_ep(path->source, list);
8af294b4
MB		 1034
1035 path->walking = 0;
2b97eabc
RP		 1036 }
1037 }
1038
024dc078
MB		 1039 widget->inputs = con;
1040
2b97eabc
RP		 1041 return con;
1042}
1043
ec2e3031
LG		 1044/**
1045 * snd_soc_dapm_get_connected_widgets - query audio path and it's widgets.
1046 * @dai: the soc DAI.
1047 * @stream: stream direction.
1048 * @list: list of active widgets for this stream.
1049 *
1050 * Queries DAPM graph as to whether an valid audio stream path exists for
1051 * the initial stream specified by name. This takes into account
1052 * current mixer and mux kcontrol settings. Creates list of valid widgets.
1053 *
1054 * Returns the number of valid paths or negative error.
1055 */
1056int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai *dai, int stream,
1057 struct snd_soc_dapm_widget_list **list)
1058{
1059 struct snd_soc_card *card = dai->card;
1060 int paths;
1061
1062 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
1063 dapm_reset(card);
1064
1059ecfa 1065 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
ec2e3031 1066 paths = is_connected_output_ep(dai->playback_widget, list);
1059ecfa
RT		 1067 dapm_clear_walk_output(&card->dapm,
1068 &dai->playback_widget->sinks);
1069 } else {
d298caae 1070 paths = is_connected_input_ep(dai->capture_widget, list);
1059ecfa
RT		 1071 dapm_clear_walk_input(&card->dapm,
1072 &dai->capture_widget->sources);
1073 }
ec2e3031
LG		 1074
1075 trace_snd_soc_dapm_connected(paths, stream);
ec2e3031
LG		 1076 mutex_unlock(&card->dapm_mutex);
1077
1078 return paths;
1079}
1080
62ea874a
MB		 1081/*
1082 * Handler for regulator supply widget.
1083 */
1084int dapm_regulator_event(struct snd_soc_dapm_widget *w,
1085 struct snd_kcontrol *kcontrol, int event)
1086{
c05b84d1
MB		 1087 int ret;
1088
eb270e98
MB		 1089 soc_dapm_async_complete(w->dapm);
1090
c05b84d1 1091 if (SND_SOC_DAPM_EVENT_ON(event)) {
de9ba98b 1092 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
8784c77a 1093 ret = regulator_allow_bypass(w->regulator, false);
c05b84d1
MB		 1094 if (ret != 0)
1095 dev_warn(w->dapm->dev,
30686c35 1096 "ASoC: Failed to unbypass %s: %d\n",
c05b84d1
MB		 1097 w->name, ret);
1098 }
1099
a3cc056b 1100 return regulator_enable(w->regulator);
c05b84d1 1101 } else {
de9ba98b 1102 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
8784c77a 1103 ret = regulator_allow_bypass(w->regulator, true);
c05b84d1
MB		 1104 if (ret != 0)
1105 dev_warn(w->dapm->dev,
30686c35 1106 "ASoC: Failed to bypass %s: %d\n",
c05b84d1
MB		 1107 w->name, ret);
1108 }
1109
a3cc056b 1110 return regulator_disable_deferred(w->regulator, w->shift);
c05b84d1 1111 }
62ea874a
MB		 1112}
1113EXPORT_SYMBOL_GPL(dapm_regulator_event);
1114
d7e7eb91
OL		 1115/*
1116 * Handler for clock supply widget.
1117 */
1118int dapm_clock_event(struct snd_soc_dapm_widget *w,
1119 struct snd_kcontrol *kcontrol, int event)
1120{
1121 if (!w->clk)
1122 return -EIO;
1123
eb270e98
MB		 1124 soc_dapm_async_complete(w->dapm);
1125
ec02995a 1126#ifdef CONFIG_HAVE_CLK
d7e7eb91 1127 if (SND_SOC_DAPM_EVENT_ON(event)) {
37c1b927 1128 return clk_prepare_enable(w->clk);
d7e7eb91 1129 } else {
37c1b927 1130 clk_disable_unprepare(w->clk);
d7e7eb91
OL		 1131 return 0;
1132 }
ec02995a 1133#endif
98b3cf12 1134 return 0;
d7e7eb91
OL		 1135}
1136EXPORT_SYMBOL_GPL(dapm_clock_event);
1137
d805002b
MB		 1138static int dapm_widget_power_check(struct snd_soc_dapm_widget *w)
1139{
9b8a83b2
MB		 1140 if (w->power_checked)
1141 return w->new_power;
1142
d805002b 1143 if (w->force)
9b8a83b2 1144 w->new_power = 1;
d805002b 1145 else
9b8a83b2
MB		 1146 w->new_power = w->power_check(w);
1147
1148 w->power_checked = true;
1149
1150 return w->new_power;
d805002b
MB		 1151}
1152
cd0f2d47
MB		 1153/* Generic check to see if a widget should be powered.
1154 */
1155static int dapm_generic_check_power(struct snd_soc_dapm_widget *w)
1156{
1157 int in, out;
1158
de02d078
MB		 1159 DAPM_UPDATE_STAT(w, power_checks);
1160
ec2e3031 1161 in = is_connected_input_ep(w, NULL);
1059ecfa 1162 dapm_clear_walk_input(w->dapm, &w->sources);
ec2e3031 1163 out = is_connected_output_ep(w, NULL);
1059ecfa 1164 dapm_clear_walk_output(w->dapm, &w->sinks);
cd0f2d47
MB		 1165 return out != 0 && in != 0;
1166}
1167
6ea31b9f
MB		 1168/* Check to see if an ADC has power */
1169static int dapm_adc_check_power(struct snd_soc_dapm_widget *w)
1170{
1171 int in;
1172
de02d078
MB		 1173 DAPM_UPDATE_STAT(w, power_checks);
1174
6ea31b9f 1175 if (w->active) {
ec2e3031 1176 in = is_connected_input_ep(w, NULL);
1059ecfa 1177 dapm_clear_walk_input(w->dapm, &w->sources);
6ea31b9f
MB		 1178 return in != 0;
1179 } else {
1180 return dapm_generic_check_power(w);
1181 }
1182}
1183
1184/* Check to see if a DAC has power */
1185static int dapm_dac_check_power(struct snd_soc_dapm_widget *w)
1186{
1187 int out;
1188
de02d078
MB		 1189 DAPM_UPDATE_STAT(w, power_checks);
1190
6ea31b9f 1191 if (w->active) {
ec2e3031 1192 out = is_connected_output_ep(w, NULL);
1059ecfa 1193 dapm_clear_walk_output(w->dapm, &w->sinks);
6ea31b9f
MB		 1194 return out != 0;
1195 } else {
1196 return dapm_generic_check_power(w);
1197 }
1198}
1199
246d0a17
MB		 1200/* Check to see if a power supply is needed */
1201static int dapm_supply_check_power(struct snd_soc_dapm_widget *w)
1202{
1203 struct snd_soc_dapm_path *path;
246d0a17 1204
de02d078
MB		 1205 DAPM_UPDATE_STAT(w, power_checks);
1206
246d0a17
MB		 1207 /* Check if one of our outputs is connected */
1208 list_for_each_entry(path, &w->sinks, list_source) {
a8fdac83
MB		 1209 DAPM_UPDATE_STAT(w, neighbour_checks);
1210
bf3a9e13
MB		 1211 if (path->weak)
1212 continue;
1213
215edda3
MB		 1214 if (path->connected &&
1215 !path->connected(path->source, path->sink))
1216 continue;
1217
3017358a
MB		 1218 if (!path->sink)
1219 continue;
1220
f68d7e16
MB		 1221 if (dapm_widget_power_check(path->sink))
1222 return 1;
246d0a17
MB		 1223 }
1224
f68d7e16 1225 return 0;
246d0a17
MB		 1226}
1227
35c64bca
MB		 1228static int dapm_always_on_check_power(struct snd_soc_dapm_widget *w)
1229{
1230 return 1;
1231}
1232
38357ab2
MB		 1233static int dapm_seq_compare(struct snd_soc_dapm_widget *a,
1234 struct snd_soc_dapm_widget *b,
828a842f 1235 bool power_up)
42aa3418 1236{
828a842f
MB		 1237 int *sort;
1238
1239 if (power_up)
1240 sort = dapm_up_seq;
1241 else
1242 sort = dapm_down_seq;
1243
38357ab2
MB		 1244 if (sort[a->id] != sort[b->id])
1245 return sort[a->id] - sort[b->id];
20e4859d
MB		 1246 if (a->subseq != b->subseq) {
1247 if (power_up)
1248 return a->subseq - b->subseq;
1249 else
1250 return b->subseq - a->subseq;
1251 }
b22ead2a
MB		 1252 if (a->reg != b->reg)
1253 return a->reg - b->reg;
84dab567
MB		 1254 if (a->dapm != b->dapm)
1255 return (unsigned long)a->dapm - (unsigned long)b->dapm;
42aa3418 1256
38357ab2
MB		 1257 return 0;
1258}
42aa3418 1259
38357ab2
MB		 1260/* Insert a widget in order into a DAPM power sequence. */
1261static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget,
1262 struct list_head *list,
828a842f 1263 bool power_up)
38357ab2
MB		 1264{
1265 struct snd_soc_dapm_widget *w;
1266
1267 list_for_each_entry(w, list, power_list)
828a842f 1268 if (dapm_seq_compare(new_widget, w, power_up) < 0) {
38357ab2
MB		 1269 list_add_tail(&new_widget->power_list, &w->power_list);
1270 return;
1271 }
1272
1273 list_add_tail(&new_widget->power_list, list);
1274}
1275
95dd5cd6 1276static void dapm_seq_check_event(struct snd_soc_card *card,
68f89ad8
MB		 1277 struct snd_soc_dapm_widget *w, int event)
1278{
68f89ad8
MB		 1279 const char *ev_name;
1280 int power, ret;
1281
1282 switch (event) {
1283 case SND_SOC_DAPM_PRE_PMU:
1284 ev_name = "PRE_PMU";
1285 power = 1;
1286 break;
1287 case SND_SOC_DAPM_POST_PMU:
1288 ev_name = "POST_PMU";
1289 power = 1;
1290 break;
1291 case SND_SOC_DAPM_PRE_PMD:
1292 ev_name = "PRE_PMD";
1293 power = 0;
1294 break;
1295 case SND_SOC_DAPM_POST_PMD:
1296 ev_name = "POST_PMD";
1297 power = 0;
1298 break;
80114129
MB		 1299 case SND_SOC_DAPM_WILL_PMU:
1300 ev_name = "WILL_PMU";
1301 power = 1;
1302 break;
1303 case SND_SOC_DAPM_WILL_PMD:
1304 ev_name = "WILL_PMD";
1305 power = 0;
1306 break;
68f89ad8 1307 default:
a6ed0608 1308 WARN(1, "Unknown event %d\n", event);
68f89ad8
MB		 1309 return;
1310 }
1311
39eb5fd1 1312 if (w->new_power != power)
68f89ad8
MB		 1313 return;
1314
1315 if (w->event && (w->event_flags & event)) {
95dd5cd6 1316 pop_dbg(w->dapm->dev, card->pop_time, "pop test : %s %s\n",
68f89ad8 1317 w->name, ev_name);
eb270e98 1318 soc_dapm_async_complete(w->dapm);
84e90930 1319 trace_snd_soc_dapm_widget_event_start(w, event);
68f89ad8 1320 ret = w->event(w, NULL, event);
84e90930 1321 trace_snd_soc_dapm_widget_event_done(w, event);
68f89ad8 1322 if (ret < 0)
95dd5cd6 1323 dev_err(w->dapm->dev, "ASoC: %s: %s event failed: %d\n",
68f89ad8
MB		 1324 ev_name, w->name, ret);
1325 }
1326}
1327
b22ead2a 1328/* Apply the coalesced changes from a DAPM sequence */
95dd5cd6 1329static void dapm_seq_run_coalesced(struct snd_soc_card *card,
b22ead2a 1330 struct list_head *pending)
163cac06 1331{
ce0fc93a 1332 struct snd_soc_dapm_context *dapm;
68f89ad8 1333 struct snd_soc_dapm_widget *w;
de9ba98b 1334 int reg;
b22ead2a
MB		 1335 unsigned int value = 0;
1336 unsigned int mask = 0;
b22ead2a 1337
ce0fc93a
LPC		 1338 w = list_first_entry(pending, struct snd_soc_dapm_widget, power_list);
1339 reg = w->reg;
1340 dapm = w->dapm;
b22ead2a
MB		 1341
1342 list_for_each_entry(w, pending, power_list) {
ce0fc93a 1343 WARN_ON(reg != w->reg || dapm != w->dapm);
39eb5fd1 1344 w->power = w->new_power;
b22ead2a 1345
de9ba98b
LPC		 1346 mask |= w->mask << w->shift;
1347 if (w->power)
1348 value |= w->on_val << w->shift;
b22ead2a 1349 else
de9ba98b 1350 value |= w->off_val << w->shift;
b22ead2a 1351
ce0fc93a 1352 pop_dbg(dapm->dev, card->pop_time,
b22ead2a
MB		 1353 "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
1354 w->name, reg, value, mask);
81628103 1355
68f89ad8 1356 /* Check for events */
95dd5cd6
LPC		 1357 dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMU);
1358 dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMD);
81628103
MB		 1359 }
1360
1361 if (reg >= 0) {
29376bc7
MB		 1362 /* Any widget will do, they should all be updating the
1363 * same register.
1364 */
29376bc7 1365
ce0fc93a 1366 pop_dbg(dapm->dev, card->pop_time,
81628103 1367 "pop test : Applying 0x%x/0x%x to %x in %dms\n",
3a45b867
JN		 1368 value, mask, reg, card->pop_time);
1369 pop_wait(card->pop_time);
ce0fc93a 1370 soc_dapm_update_bits(dapm, reg, mask, value);
b22ead2a
MB		 1371 }
1372
81628103 1373 list_for_each_entry(w, pending, power_list) {
95dd5cd6
LPC		 1374 dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMU);
1375 dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMD);
81628103 1376 }
b22ead2a 1377}
42aa3418 1378
b22ead2a
MB		 1379/* Apply a DAPM power sequence.
1380 *
1381 * We walk over a pre-sorted list of widgets to apply power to. In
1382 * order to minimise the number of writes to the device required
1383 * multiple widgets will be updated in a single write where possible.
1384 * Currently anything that requires more than a single write is not
1385 * handled.
1386 */
95dd5cd6
LPC		 1387static void dapm_seq_run(struct snd_soc_card *card,
1388 struct list_head *list, int event, bool power_up)
b22ead2a
MB		 1389{
1390 struct snd_soc_dapm_widget *w, *n;
eb270e98 1391 struct snd_soc_dapm_context *d;
b22ead2a
MB		 1392 LIST_HEAD(pending);
1393 int cur_sort = -1;
20e4859d 1394 int cur_subseq = -1;
b22ead2a 1395 int cur_reg = SND_SOC_NOPM;
7be31be8 1396 struct snd_soc_dapm_context *cur_dapm = NULL;
474b62d6 1397 int ret, i;
828a842f
MB		 1398 int *sort;
1399
1400 if (power_up)
1401 sort = dapm_up_seq;
1402 else
1403 sort = dapm_down_seq;
163cac06 1404
b22ead2a
MB		 1405 list_for_each_entry_safe(w, n, list, power_list) {
1406 ret = 0;
1407
1408 /* Do we need to apply any queued changes? */
7be31be8 1409 if (sort[w->id] != cur_sort || w->reg != cur_reg ||
20e4859d 1410 w->dapm != cur_dapm || w->subseq != cur_subseq) {
b22ead2a 1411 if (!list_empty(&pending))
95dd5cd6 1412 dapm_seq_run_coalesced(card, &pending);
b22ead2a 1413
474b62d6
MB		 1414 if (cur_dapm && cur_dapm->seq_notifier) {
1415 for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
1416 if (sort[i] == cur_sort)
1417 cur_dapm->seq_notifier(cur_dapm,
f85a9e0d
MB		 1418 i,
1419 cur_subseq);
474b62d6
MB		 1420 }
1421
eb270e98
MB		 1422 if (cur_dapm && w->dapm != cur_dapm)
1423 soc_dapm_async_complete(cur_dapm);
1424
b22ead2a
MB		 1425 INIT_LIST_HEAD(&pending);
1426 cur_sort = -1;
b0b3e6f8 1427 cur_subseq = INT_MIN;
b22ead2a 1428 cur_reg = SND_SOC_NOPM;
7be31be8 1429 cur_dapm = NULL;
b22ead2a
MB		 1430 }
1431
163cac06
MB		 1432 switch (w->id) {
1433 case snd_soc_dapm_pre:
1434 if (!w->event)
b22ead2a
MB		 1435 list_for_each_entry_safe_continue(w, n, list,
1436 power_list);
163cac06 1437
b22ead2a 1438 if (event == SND_SOC_DAPM_STREAM_START)
163cac06
MB		 1439 ret = w->event(w,
1440 NULL, SND_SOC_DAPM_PRE_PMU);
b22ead2a 1441 else if (event == SND_SOC_DAPM_STREAM_STOP)
163cac06
MB		 1442 ret = w->event(w,
1443 NULL, SND_SOC_DAPM_PRE_PMD);
163cac06
MB		 1444 break;
1445
1446 case snd_soc_dapm_post:
1447 if (!w->event)
b22ead2a
MB		 1448 list_for_each_entry_safe_continue(w, n, list,
1449 power_list);
163cac06 1450
b22ead2a 1451 if (event == SND_SOC_DAPM_STREAM_START)
163cac06
MB		 1452 ret = w->event(w,
1453 NULL, SND_SOC_DAPM_POST_PMU);
b22ead2a 1454 else if (event == SND_SOC_DAPM_STREAM_STOP)
163cac06
MB		 1455 ret = w->event(w,
1456 NULL, SND_SOC_DAPM_POST_PMD);
163cac06
MB		 1457 break;
1458
b22ead2a 1459 default:
81628103
MB		 1460 /* Queue it up for application */
1461 cur_sort = sort[w->id];
20e4859d 1462 cur_subseq = w->subseq;
81628103 1463 cur_reg = w->reg;
7be31be8 1464 cur_dapm = w->dapm;
81628103
MB		 1465 list_move(&w->power_list, &pending);
1466 break;
163cac06 1467 }
b22ead2a
MB		 1468
1469 if (ret < 0)
f7d41ae8 1470 dev_err(w->dapm->dev,
30a6a1a4 1471 "ASoC: Failed to apply widget power: %d\n", ret);
6ea31b9f 1472 }
b22ead2a
MB		 1473
1474 if (!list_empty(&pending))
95dd5cd6 1475 dapm_seq_run_coalesced(card, &pending);
474b62d6
MB		 1476
1477 if (cur_dapm && cur_dapm->seq_notifier) {
1478 for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
1479 if (sort[i] == cur_sort)
1480 cur_dapm->seq_notifier(cur_dapm,
f85a9e0d 1481 i, cur_subseq);
474b62d6 1482 }
eb270e98
MB		 1483
1484 list_for_each_entry(d, &card->dapm_list, list) {
1485 soc_dapm_async_complete(d);
1486 }
42aa3418
MB		 1487}
1488
95dd5cd6 1489static void dapm_widget_update(struct snd_soc_card *card)
97404f2e 1490{
95dd5cd6 1491 struct snd_soc_dapm_update *update = card->update;
ce6cfaf1
LPC		 1492 struct snd_soc_dapm_widget_list *wlist;
1493 struct snd_soc_dapm_widget *w = NULL;
1494 unsigned int wi;
97404f2e
MB		 1495 int ret;
1496
57295073 1497 if (!update || !dapm_kcontrol_is_powered(update->kcontrol))
97404f2e
MB		 1498 return;
1499
e84357f7 1500 wlist = dapm_kcontrol_get_wlist(update->kcontrol);
97404f2e 1501
ce6cfaf1
LPC		 1502 for (wi = 0; wi < wlist->num_widgets; wi++) {
1503 w = wlist->widgets[wi];
1504
1505 if (w->event && (w->event_flags & SND_SOC_DAPM_PRE_REG)) {
1506 ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG);
1507 if (ret != 0)
95dd5cd6 1508 dev_err(w->dapm->dev, "ASoC: %s DAPM pre-event failed: %d\n",
ce6cfaf1
LPC		 1509 w->name, ret);
1510 }
97404f2e
MB		 1511 }
1512
ce6cfaf1
LPC		 1513 if (!w)
1514 return;
1515
ce0fc93a
LPC		 1516 ret = soc_dapm_update_bits(w->dapm, update->reg, update->mask,
1517 update->val);
97404f2e 1518 if (ret < 0)
95dd5cd6 1519 dev_err(w->dapm->dev, "ASoC: %s DAPM update failed: %d\n",
30a6a1a4 1520 w->name, ret);
97404f2e 1521
ce6cfaf1
LPC		 1522 for (wi = 0; wi < wlist->num_widgets; wi++) {
1523 w = wlist->widgets[wi];
1524
1525 if (w->event && (w->event_flags & SND_SOC_DAPM_POST_REG)) {
1526 ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG);
1527 if (ret != 0)
95dd5cd6 1528 dev_err(w->dapm->dev, "ASoC: %s DAPM post-event failed: %d\n",
ce6cfaf1
LPC		 1529 w->name, ret);
1530 }
97404f2e
MB		 1531 }
1532}
1533
9d0624a7
MB		 1534/* Async callback run prior to DAPM sequences - brings to _PREPARE if
1535 * they're changing state.
1536 */
1537static void dapm_pre_sequence_async(void *data, async_cookie_t cookie)
1538{
1539 struct snd_soc_dapm_context *d = data;
1540 int ret;
1541
56fba41f
MB		 1542 /* If we're off and we're not supposed to be go into STANDBY */
1543 if (d->bias_level == SND_SOC_BIAS_OFF &&
1544 d->target_bias_level != SND_SOC_BIAS_OFF) {
f1aac484
MB		 1545 if (d->dev)
1546 pm_runtime_get_sync(d->dev);
1547
9d0624a7
MB		 1548 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1549 if (ret != 0)
1550 dev_err(d->dev,
30a6a1a4 1551 "ASoC: Failed to turn on bias: %d\n", ret);
9d0624a7
MB		 1552 }
1553
ce85a4d7
LPC		 1554 /* Prepare for a transition to ON or away from ON */
1555 if ((d->target_bias_level == SND_SOC_BIAS_ON &&
1556 d->bias_level != SND_SOC_BIAS_ON) ||
1557 (d->target_bias_level != SND_SOC_BIAS_ON &&
1558 d->bias_level == SND_SOC_BIAS_ON)) {
9d0624a7
MB		 1559 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE);
1560 if (ret != 0)
1561 dev_err(d->dev,
30a6a1a4 1562 "ASoC: Failed to prepare bias: %d\n", ret);
9d0624a7
MB		 1563 }
1564}
1565
1566/* Async callback run prior to DAPM sequences - brings to their final
1567 * state.
1568 */
1569static void dapm_post_sequence_async(void *data, async_cookie_t cookie)
1570{
1571 struct snd_soc_dapm_context *d = data;
1572 int ret;
1573
1574 /* If we just powered the last thing off drop to standby bias */
56fba41f
MB		 1575 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1576 (d->target_bias_level == SND_SOC_BIAS_STANDBY ||
1577 d->target_bias_level == SND_SOC_BIAS_OFF)) {
9d0624a7
MB		 1578 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1579 if (ret != 0)
30a6a1a4 1580 dev_err(d->dev, "ASoC: Failed to apply standby bias: %d\n",
9d0624a7
MB		 1581 ret);
1582 }
97404f2e 1583
9d0624a7 1584 /* If we're in standby and can support bias off then do that */
56fba41f
MB		 1585 if (d->bias_level == SND_SOC_BIAS_STANDBY &&
1586 d->target_bias_level == SND_SOC_BIAS_OFF) {
9d0624a7
MB		 1587 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF);
1588 if (ret != 0)
30a6a1a4
LG		 1589 dev_err(d->dev, "ASoC: Failed to turn off bias: %d\n",
1590 ret);
f1aac484
MB		 1591
1592 if (d->dev)
fb644e9c 1593 pm_runtime_put(d->dev);
9d0624a7
MB		 1594 }
1595
1596 /* If we just powered up then move to active bias */
56fba41f
MB		 1597 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1598 d->target_bias_level == SND_SOC_BIAS_ON) {
9d0624a7
MB		 1599 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON);
1600 if (ret != 0)
30a6a1a4 1601 dev_err(d->dev, "ASoC: Failed to apply active bias: %d\n",
9d0624a7
MB		 1602 ret);
1603 }
1604}
97404f2e 1605
fe4fda5d
MB		 1606static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget *peer,
1607 bool power, bool connect)
1608{
1609 /* If a connection is being made or broken then that update
1610 * will have marked the peer dirty, otherwise the widgets are
1611 * not connected and this update has no impact. */
1612 if (!connect)
1613 return;
1614
1615 /* If the peer is already in the state we're moving to then we
1616 * won't have an impact on it. */
1617 if (power != peer->power)
75c1f891 1618 dapm_mark_dirty(peer, "peer state change");
fe4fda5d
MB		 1619}
1620
05623c43
MB		 1621static void dapm_widget_set_power(struct snd_soc_dapm_widget *w, bool power,
1622 struct list_head *up_list,
1623 struct list_head *down_list)
1624{
db432b41
MB		 1625 struct snd_soc_dapm_path *path;
1626
05623c43
MB		 1627 if (w->power == power)
1628 return;
1629
1630 trace_snd_soc_dapm_widget_power(w, power);
1631
db432b41 1632 /* If we changed our power state perhaps our neigbours changed
fe4fda5d 1633 * also.
db432b41
MB		 1634 */
1635 list_for_each_entry(path, &w->sources, list_sink) {
1636 if (path->source) {
fe4fda5d
MB		 1637 dapm_widget_set_peer_power(path->source, power,
1638 path->connect);
db432b41
MB		 1639 }
1640 }
f3bf3e45
MB		 1641 switch (w->id) {
1642 case snd_soc_dapm_supply:
62ea874a 1643 case snd_soc_dapm_regulator_supply:
d7e7eb91 1644 case snd_soc_dapm_clock_supply:
57295073 1645 case snd_soc_dapm_kcontrol:
f3bf3e45
MB		 1646 /* Supplies can't affect their outputs, only their inputs */
1647 break;
1648 default:
1649 list_for_each_entry(path, &w->sinks, list_source) {
1650 if (path->sink) {
1651 dapm_widget_set_peer_power(path->sink, power,
1652 path->connect);
1653 }
db432b41 1654 }
f3bf3e45 1655 break;
db432b41
MB		 1656 }
1657
05623c43
MB		 1658 if (power)
1659 dapm_seq_insert(w, up_list, true);
1660 else
1661 dapm_seq_insert(w, down_list, false);
05623c43
MB		 1662}
1663
7c81beb0
MB		 1664static void dapm_power_one_widget(struct snd_soc_dapm_widget *w,
1665 struct list_head *up_list,
1666 struct list_head *down_list)
1667{
7c81beb0
MB		 1668 int power;
1669
1670 switch (w->id) {
1671 case snd_soc_dapm_pre:
1672 dapm_seq_insert(w, down_list, false);
1673 break;
1674 case snd_soc_dapm_post:
1675 dapm_seq_insert(w, up_list, true);
1676 break;
1677
1678 default:
d805002b 1679 power = dapm_widget_power_check(w);
7c81beb0 1680
05623c43 1681 dapm_widget_set_power(w, power, up_list, down_list);
7c81beb0
MB		 1682 break;
1683 }
1684}
1685
2b97eabc
RP		 1686/*
1687 * Scan each dapm widget for complete audio path.
1688 * A complete path is a route that has valid endpoints i.e.:-
1689 *
1690 * o DAC to output pin.
1691 * o Input Pin to ADC.
1692 * o Input pin to Output pin (bypass, sidetone)
1693 * o DAC to ADC (loopback).
1694 */
95dd5cd6 1695static int dapm_power_widgets(struct snd_soc_card *card, int event)
2b97eabc
RP		 1696{
1697 struct snd_soc_dapm_widget *w;
7be31be8 1698 struct snd_soc_dapm_context *d;
291f3bbc
MB		 1699 LIST_HEAD(up_list);
1700 LIST_HEAD(down_list);
2955b47d 1701 ASYNC_DOMAIN_EXCLUSIVE(async_domain);
56fba41f 1702 enum snd_soc_bias_level bias;
6d3ddc81 1703
f9fa2b18
MB		 1704 lockdep_assert_held(&card->dapm_mutex);
1705
84e90930
MB		 1706 trace_snd_soc_dapm_start(card);
1707
56fba41f 1708 list_for_each_entry(d, &card->dapm_list, list) {
497098be
MB		 1709 if (d->idle_bias_off)
1710 d->target_bias_level = SND_SOC_BIAS_OFF;
1711 else
1712 d->target_bias_level = SND_SOC_BIAS_STANDBY;
56fba41f 1713 }
7be31be8 1714
6c120e19 1715 dapm_reset(card);
9b8a83b2 1716
6d3ddc81 1717 /* Check which widgets we need to power and store them in
db432b41
MB		 1718 * lists indicating if they should be powered up or down. We
1719 * only check widgets that have been flagged as dirty but note
1720 * that new widgets may be added to the dirty list while we
1721 * iterate.
6d3ddc81 1722 */
db432b41 1723 list_for_each_entry(w, &card->dapm_dirty, dirty) {
7c81beb0 1724 dapm_power_one_widget(w, &up_list, &down_list);
2b97eabc
RP		 1725 }
1726
f9de6d74 1727 list_for_each_entry(w, &card->widgets, list) {
0ff97ebf
MB		 1728 switch (w->id) {
1729 case snd_soc_dapm_pre:
1730 case snd_soc_dapm_post:
1731 /* These widgets always need to be powered */
1732 break;
1733 default:
1734 list_del_init(&w->dirty);
1735 break;
1736 }
db432b41 1737
39eb5fd1 1738 if (w->new_power) {
f9de6d74
MB		 1739 d = w->dapm;
1740
1741 /* Supplies and micbiases only bring the
1742 * context up to STANDBY as unless something
1743 * else is active and passing audio they
afe62367
MB		 1744 * generally don't require full power. Signal
1745 * generators are virtual pins and have no
1746 * power impact themselves.
f9de6d74
MB		 1747 */
1748 switch (w->id) {
afe62367 1749 case snd_soc_dapm_siggen:
da83fea6 1750 case snd_soc_dapm_vmid:
afe62367 1751 break;
f9de6d74 1752 case snd_soc_dapm_supply:
62ea874a 1753 case snd_soc_dapm_regulator_supply:
d7e7eb91 1754 case snd_soc_dapm_clock_supply:
f9de6d74
MB		 1755 case snd_soc_dapm_micbias:
1756 if (d->target_bias_level < SND_SOC_BIAS_STANDBY)
1757 d->target_bias_level = SND_SOC_BIAS_STANDBY;
1758 break;
1759 default:
1760 d->target_bias_level = SND_SOC_BIAS_ON;
1761 break;
1762 }
1763 }
1764
1765 }
1766
85a843c5
MB		 1767 /* Force all contexts in the card to the same bias state if
1768 * they're not ground referenced.
1769 */
56fba41f 1770 bias = SND_SOC_BIAS_OFF;
52ba67bf 1771 list_for_each_entry(d, &card->dapm_list, list)
56fba41f
MB		 1772 if (d->target_bias_level > bias)
1773 bias = d->target_bias_level;
52ba67bf 1774 list_for_each_entry(d, &card->dapm_list, list)
85a843c5
MB		 1775 if (!d->idle_bias_off)
1776 d->target_bias_level = bias;
52ba67bf 1777
de02d078 1778 trace_snd_soc_dapm_walk_done(card);
52ba67bf 1779
17282ba4
XX		 1780 /* Run card bias changes at first */
1781 dapm_pre_sequence_async(&card->dapm, 0);
1782 /* Run other bias changes in parallel */
1783 list_for_each_entry(d, &card->dapm_list, list) {
1784 if (d != &card->dapm)
1785 async_schedule_domain(dapm_pre_sequence_async, d,
1786 &async_domain);
1787 }
9d0624a7 1788 async_synchronize_full_domain(&async_domain);
452c5eaa 1789
cf1f7c6e 1790 list_for_each_entry(w, &down_list, power_list) {
95dd5cd6 1791 dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMD);
80114129
MB		 1792 }
1793
cf1f7c6e 1794 list_for_each_entry(w, &up_list, power_list) {
95dd5cd6 1795 dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMU);
80114129
MB		 1796 }
1797
6d3ddc81 1798 /* Power down widgets first; try to avoid amplifying pops. */
95dd5cd6 1799 dapm_seq_run(card, &down_list, event, false);
2b97eabc 1800
95dd5cd6 1801 dapm_widget_update(card);
97404f2e 1802
6d3ddc81 1803 /* Now power up. */
95dd5cd6 1804 dapm_seq_run(card, &up_list, event, true);
2b97eabc 1805
9d0624a7 1806 /* Run all the bias changes in parallel */
17282ba4
XX		 1807 list_for_each_entry(d, &card->dapm_list, list) {
1808 if (d != &card->dapm)
1809 async_schedule_domain(dapm_post_sequence_async, d,
1810 &async_domain);
1811 }
9d0624a7 1812 async_synchronize_full_domain(&async_domain);
17282ba4
XX		 1813 /* Run card bias changes at last */
1814 dapm_post_sequence_async(&card->dapm, 0);
452c5eaa 1815
8078d87f
LG		 1816 /* do we need to notify any clients that DAPM event is complete */
1817 list_for_each_entry(d, &card->dapm_list, list) {
1818 if (d->stream_event)
1819 d->stream_event(d, event);
1820 }
1821
95dd5cd6 1822 pop_dbg(card->dev, card->pop_time,
fd8d3bc0 1823 "DAPM sequencing finished, waiting %dms\n", card->pop_time);
3a45b867 1824 pop_wait(card->pop_time);
cb507e7e 1825
84e90930
MB		 1826 trace_snd_soc_dapm_done(card);
1827
42aa3418 1828 return 0;
2b97eabc
RP		 1829}
1830
79fb9387 1831#ifdef CONFIG_DEBUG_FS
79fb9387
MB		 1832static ssize_t dapm_widget_power_read_file(struct file *file,
1833 char __user *user_buf,
1834 size_t count, loff_t *ppos)
1835{
1836 struct snd_soc_dapm_widget *w = file->private_data;
1837 char *buf;
1838 int in, out;
1839 ssize_t ret;
1840 struct snd_soc_dapm_path *p = NULL;
1841
1842 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
1843 if (!buf)
1844 return -ENOMEM;
1845
ec2e3031 1846 in = is_connected_input_ep(w, NULL);
1059ecfa 1847 dapm_clear_walk_input(w->dapm, &w->sources);
ec2e3031 1848 out = is_connected_output_ep(w, NULL);
1059ecfa 1849 dapm_clear_walk_output(w->dapm, &w->sinks);
79fb9387 1850
f13ebada
MB		 1851 ret = snprintf(buf, PAGE_SIZE, "%s: %s%s in %d out %d",
1852 w->name, w->power ? "On" : "Off",
1853 w->force ? " (forced)" : "", in, out);
79fb9387 1854
d033c36a
MB		 1855 if (w->reg >= 0)
1856 ret += snprintf(buf + ret, PAGE_SIZE - ret,
de9ba98b
LPC		 1857 " - R%d(0x%x) mask 0x%x",
1858 w->reg, w->reg, w->mask << w->shift);
d033c36a
MB		 1859
1860 ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n");
1861
3eef08ba
MB		 1862 if (w->sname)
1863 ret += snprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n",
1864 w->sname,
1865 w->active ? "active" : "inactive");
79fb9387
MB		 1866
1867 list_for_each_entry(p, &w->sources, list_sink) {
ff18620c 1868 if (p->connected && !p->connected(w, p->source))
215edda3
MB		 1869 continue;
1870
79fb9387
MB		 1871 if (p->connect)
1872 ret += snprintf(buf + ret, PAGE_SIZE - ret,
67f5ed6e 1873 " in \"%s\" \"%s\"\n",
79fb9387
MB		 1874 p->name ? p->name : "static",
1875 p->source->name);
1876 }
1877 list_for_each_entry(p, &w->sinks, list_source) {
215edda3
MB		 1878 if (p->connected && !p->connected(w, p->sink))
1879 continue;
1880
79fb9387
MB		 1881 if (p->connect)
1882 ret += snprintf(buf + ret, PAGE_SIZE - ret,
67f5ed6e 1883 " out \"%s\" \"%s\"\n",
79fb9387
MB		 1884 p->name ? p->name : "static",
1885 p->sink->name);
1886 }
1887
1888 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
1889
1890 kfree(buf);
1891 return ret;
1892}
1893
1894static const struct file_operations dapm_widget_power_fops = {
234e3405 1895 .open = simple_open,
79fb9387 1896 .read = dapm_widget_power_read_file,
6038f373 1897 .llseek = default_llseek,
79fb9387
MB		 1898};
1899
ef49e4fa
MB		 1900static ssize_t dapm_bias_read_file(struct file *file, char __user *user_buf,
1901 size_t count, loff_t *ppos)
1902{
1903 struct snd_soc_dapm_context *dapm = file->private_data;
1904 char *level;
1905
1906 switch (dapm->bias_level) {
1907 case SND_SOC_BIAS_ON:
1908 level = "On\n";
1909 break;
1910 case SND_SOC_BIAS_PREPARE:
1911 level = "Prepare\n";
1912 break;
1913 case SND_SOC_BIAS_STANDBY:
1914 level = "Standby\n";
1915 break;
1916 case SND_SOC_BIAS_OFF:
1917 level = "Off\n";
1918 break;
1919 default:
a6ed0608 1920 WARN(1, "Unknown bias_level %d\n", dapm->bias_level);
ef49e4fa
MB		 1921 level = "Unknown\n";
1922 break;
1923 }
1924
1925 return simple_read_from_buffer(user_buf, count, ppos, level,
1926 strlen(level));
1927}
1928
1929static const struct file_operations dapm_bias_fops = {
234e3405 1930 .open = simple_open,
ef49e4fa
MB		 1931 .read = dapm_bias_read_file,
1932 .llseek = default_llseek,
1933};
1934
8eecaf62
LPC		 1935void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
1936 struct dentry *parent)
79fb9387 1937{
79fb9387
MB		 1938 struct dentry *d;
1939
8eecaf62
LPC		 1940 dapm->debugfs_dapm = debugfs_create_dir("dapm", parent);
1941
1942 if (!dapm->debugfs_dapm) {
f1e90af2 1943 dev_warn(dapm->dev,
30a6a1a4 1944 "ASoC: Failed to create DAPM debugfs directory\n");
79fb9387 1945 return;
8eecaf62 1946 }
79fb9387 1947
ef49e4fa
MB		 1948 d = debugfs_create_file("bias_level", 0444,
1949 dapm->debugfs_dapm, dapm,
1950 &dapm_bias_fops);
1951 if (!d)
1952 dev_warn(dapm->dev,
1953 "ASoC: Failed to create bias level debugfs file\n");
d5d1e0be 1954}
ef49e4fa 1955
d5d1e0be
LPC		 1956static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
1957{
1958 struct snd_soc_dapm_context *dapm = w->dapm;
1959 struct dentry *d;
79fb9387 1960
d5d1e0be
LPC		 1961 if (!dapm->debugfs_dapm || !w->name)
1962 return;
1963
1964 d = debugfs_create_file(w->name, 0444,
1965 dapm->debugfs_dapm, w,
1966 &dapm_widget_power_fops);
1967 if (!d)
1968 dev_warn(w->dapm->dev,
1969 "ASoC: Failed to create %s debugfs file\n",
1970 w->name);
79fb9387 1971}
d5d1e0be 1972
6c45e126
LPC		 1973static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
1974{
1975 debugfs_remove_recursive(dapm->debugfs_dapm);
1976}
1977
79fb9387 1978#else
8eecaf62
LPC		 1979void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
1980 struct dentry *parent)
79fb9387
MB		 1981{
1982}
d5d1e0be
LPC		 1983
1984static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
1985{
1986}
1987
6c45e126
LPC		 1988static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
1989{
1990}
1991
79fb9387
MB		 1992#endif
1993
2b97eabc 1994/* test and update the power status of a mux widget */
95dd5cd6 1995static int soc_dapm_mux_update_power(struct snd_soc_card *card,
40f02cd9 1996 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e)
2b97eabc
RP		 1997{
1998 struct snd_soc_dapm_path *path;
1999 int found = 0;
2000
f9fa2b18
MB		 2001 lockdep_assert_held(&card->dapm_mutex);
2002
2b97eabc 2003 /* find dapm widget path assoc with kcontrol */
5106b92f 2004 dapm_kcontrol_for_each_path(path, kcontrol) {
cb01e2b9 2005 if (!path->name || !e->texts[mux])
2b97eabc
RP		 2006 continue;
2007
2008 found = 1;
2009 /* we now need to match the string in the enum to the path */
db432b41 2010 if (!(strcmp(path->name, e->texts[mux]))) {
2b97eabc 2011 path->connect = 1; /* new connection */
75c1f891 2012 dapm_mark_dirty(path->source, "mux connection");
db432b41
MB		 2013 } else {
2014 if (path->connect)
75c1f891
MB		 2015 dapm_mark_dirty(path->source,
2016 "mux disconnection");
2b97eabc 2017 path->connect = 0; /* old connection must be powered down */
db432b41 2018 }
ce6cfaf1 2019 dapm_mark_dirty(path->sink, "mux change");
2b97eabc
RP		 2020 }
2021
ce6cfaf1 2022 if (found)
95dd5cd6 2023 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2b97eabc 2024
618dae11 2025 return found;
2b97eabc 2026}
4edbb345 2027
ce6cfaf1 2028int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_context *dapm,
6b3fc03b
LPC		 2029 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e,
2030 struct snd_soc_dapm_update *update)
4edbb345 2031{
ce6cfaf1 2032 struct snd_soc_card *card = dapm->card;
4edbb345
LG		 2033 int ret;
2034
3cd04343 2035 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
564c6504 2036 card->update = update;
95dd5cd6 2037 ret = soc_dapm_mux_update_power(card, kcontrol, mux, e);
564c6504 2038 card->update = NULL;
4edbb345 2039 mutex_unlock(&card->dapm_mutex);
618dae11 2040 if (ret > 0)
c3f48ae6 2041 soc_dpcm_runtime_update(card);
4edbb345
LG		 2042 return ret;
2043}
40f02cd9 2044EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power);
2b97eabc 2045
1b075e3f 2046/* test and update the power status of a mixer or switch widget */
95dd5cd6 2047static int soc_dapm_mixer_update_power(struct snd_soc_card *card,
283375ce 2048 struct snd_kcontrol *kcontrol, int connect)
2b97eabc
RP		 2049{
2050 struct snd_soc_dapm_path *path;
2051 int found = 0;
2052
f9fa2b18
MB		 2053 lockdep_assert_held(&card->dapm_mutex);
2054
2b97eabc 2055 /* find dapm widget path assoc with kcontrol */
5106b92f 2056 dapm_kcontrol_for_each_path(path, kcontrol) {
2b97eabc 2057 found = 1;
283375ce 2058 path->connect = connect;
75c1f891 2059 dapm_mark_dirty(path->source, "mixer connection");
ce6cfaf1 2060 dapm_mark_dirty(path->sink, "mixer update");
2b97eabc
RP		 2061 }
2062
ce6cfaf1 2063 if (found)
95dd5cd6 2064 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2b97eabc 2065
618dae11 2066 return found;
2b97eabc 2067}
4edbb345 2068
ce6cfaf1 2069int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_context *dapm,
6b3fc03b
LPC		 2070 struct snd_kcontrol *kcontrol, int connect,
2071 struct snd_soc_dapm_update *update)
4edbb345 2072{
ce6cfaf1 2073 struct snd_soc_card *card = dapm->card;
4edbb345
LG		 2074 int ret;
2075
3cd04343 2076 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
564c6504 2077 card->update = update;
95dd5cd6 2078 ret = soc_dapm_mixer_update_power(card, kcontrol, connect);
564c6504 2079 card->update = NULL;
4edbb345 2080 mutex_unlock(&card->dapm_mutex);
618dae11 2081 if (ret > 0)
c3f48ae6 2082 soc_dpcm_runtime_update(card);
4edbb345
LG		 2083 return ret;
2084}
40f02cd9 2085EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power);
2b97eabc
RP		 2086
2087/* show dapm widget status in sys fs */
2088static ssize_t dapm_widget_show(struct device *dev,
2089 struct device_attribute *attr, char *buf)
2090{
36ae1a96 2091 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
f0fba2ad 2092 struct snd_soc_codec *codec =rtd->codec;
2b97eabc
RP		 2093 struct snd_soc_dapm_widget *w;
2094 int count = 0;
2095 char *state = "not set";
2096
97c866de
JN		 2097 list_for_each_entry(w, &codec->card->widgets, list) {
2098 if (w->dapm != &codec->dapm)
2099 continue;
2b97eabc
RP		 2100
2101 /* only display widgets that burnm power */
2102 switch (w->id) {
2103 case snd_soc_dapm_hp:
2104 case snd_soc_dapm_mic:
2105 case snd_soc_dapm_spk:
2106 case snd_soc_dapm_line:
2107 case snd_soc_dapm_micbias:
2108 case snd_soc_dapm_dac:
2109 case snd_soc_dapm_adc:
2110 case snd_soc_dapm_pga:
d88429a6 2111 case snd_soc_dapm_out_drv:
2b97eabc 2112 case snd_soc_dapm_mixer:
ca9c1aae 2113 case snd_soc_dapm_mixer_named_ctl:
246d0a17 2114 case snd_soc_dapm_supply:
62ea874a 2115 case snd_soc_dapm_regulator_supply:
d7e7eb91 2116 case snd_soc_dapm_clock_supply:
2b97eabc
RP		 2117 if (w->name)
2118 count += sprintf(buf + count, "%s: %s\n",
2119 w->name, w->power ? "On":"Off");
2120 break;
2121 default:
2122 break;
2123 }
2124 }
2125
ce6120cc 2126 switch (codec->dapm.bias_level) {
0be9898a
MB		 2127 case SND_SOC_BIAS_ON:
2128 state = "On";
2b97eabc 2129 break;
0be9898a
MB		 2130 case SND_SOC_BIAS_PREPARE:
2131 state = "Prepare";
2b97eabc 2132 break;
0be9898a
MB		 2133 case SND_SOC_BIAS_STANDBY:
2134 state = "Standby";
2b97eabc 2135 break;
0be9898a
MB		 2136 case SND_SOC_BIAS_OFF:
2137 state = "Off";
2b97eabc
RP		 2138 break;
2139 }
2140 count += sprintf(buf + count, "PM State: %s\n", state);
2141
2142 return count;
2143}
2144
2145static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL);
2146
2147int snd_soc_dapm_sys_add(struct device *dev)
2148{
12ef193d 2149 return device_create_file(dev, &dev_attr_dapm_widget);
2b97eabc
RP		 2150}
2151
2152static void snd_soc_dapm_sys_remove(struct device *dev)
2153{
aef90843 2154 device_remove_file(dev, &dev_attr_dapm_widget);
2b97eabc
RP		 2155}
2156
8872293f
LPC		 2157static void dapm_free_path(struct snd_soc_dapm_path *path)
2158{
2159 list_del(&path->list_sink);
2160 list_del(&path->list_source);
5106b92f 2161 list_del(&path->list_kcontrol);
8872293f 2162 list_del(&path->list);
8872293f
LPC		 2163 kfree(path);
2164}
2165
2b97eabc 2166/* free all dapm widgets and resources */
ce6120cc 2167static void dapm_free_widgets(struct snd_soc_dapm_context *dapm)
2b97eabc
RP		 2168{
2169 struct snd_soc_dapm_widget *w, *next_w;
2170 struct snd_soc_dapm_path *p, *next_p;
2171
97c866de
JN		 2172 list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) {
2173 if (w->dapm != dapm)
2174 continue;
2b97eabc 2175 list_del(&w->list);
8ddab3f5
JN		 2176 /*
2177 * remove source and sink paths associated to this widget.
2178 * While removing the path, remove reference to it from both
2179 * source and sink widgets so that path is removed only once.
2180 */
8872293f
LPC		 2181 list_for_each_entry_safe(p, next_p, &w->sources, list_sink)
2182 dapm_free_path(p);
2183
2184 list_for_each_entry_safe(p, next_p, &w->sinks, list_source)
2185 dapm_free_path(p);
2186
fad59888 2187 kfree(w->kcontrols);
ead9b919 2188 kfree(w->name);
2b97eabc
RP		 2189 kfree(w);
2190 }
2b97eabc
RP		 2191}
2192
91a5fca4
LPC		 2193static struct snd_soc_dapm_widget *dapm_find_widget(
2194 struct snd_soc_dapm_context *dapm, const char *pin,
2195 bool search_other_contexts)
a5302181
LG		 2196{
2197 struct snd_soc_dapm_widget *w;
91a5fca4 2198 struct snd_soc_dapm_widget *fallback = NULL;
a5302181 2199
97c866de 2200 list_for_each_entry(w, &dapm->card->widgets, list) {
a5302181 2201 if (!strcmp(w->name, pin)) {
91a5fca4
LPC		 2202 if (w->dapm == dapm)
2203 return w;
2204 else
2205 fallback = w;
a5302181
LG		 2206 }
2207 }
2208
91a5fca4
LPC		 2209 if (search_other_contexts)
2210 return fallback;
2211
2212 return NULL;
2213}
2214
2215static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm,
2216 const char *pin, int status)
2217{
2218 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
2219
f9fa2b18
MB		 2220 dapm_assert_locked(dapm);
2221
91a5fca4 2222 if (!w) {
30a6a1a4 2223 dev_err(dapm->dev, "ASoC: DAPM unknown pin %s\n", pin);
91a5fca4 2224 return -EINVAL;
0d86733c
MB		 2225 }
2226
1a8b2d9d
MB		 2227 if (w->connected != status)
2228 dapm_mark_dirty(w, "pin configuration");
2229
91a5fca4
LPC		 2230 w->connected = status;
2231 if (status == 0)
2232 w->force = 0;
2233
2234 return 0;
a5302181
LG		 2235}
2236
2b97eabc 2237/**
3eb29dfb 2238 * snd_soc_dapm_sync_unlocked - scan and power dapm paths
ce6120cc 2239 * @dapm: DAPM context
2b97eabc
RP		 2240 *
2241 * Walks all dapm audio paths and powers widgets according to their
2242 * stream or path usage.
2243 *
3eb29dfb
CK		 2244 * Requires external locking.
2245 *
2b97eabc
RP		 2246 * Returns 0 for success.
2247 */
3eb29dfb 2248int snd_soc_dapm_sync_unlocked(struct snd_soc_dapm_context *dapm)
2b97eabc 2249{
4f4c0072
MB		 2250 /*
2251 * Suppress early reports (eg, jacks syncing their state) to avoid
2252 * silly DAPM runs during card startup.
2253 */
2254 if (!dapm->card || !dapm->card->instantiated)
2255 return 0;
2256
3eb29dfb
CK		 2257 return dapm_power_widgets(dapm->card, SND_SOC_DAPM_STREAM_NOP);
2258}
2259EXPORT_SYMBOL_GPL(snd_soc_dapm_sync_unlocked);
2260
2261/**
2262 * snd_soc_dapm_sync - scan and power dapm paths
2263 * @dapm: DAPM context
2264 *
2265 * Walks all dapm audio paths and powers widgets according to their
2266 * stream or path usage.
2267 *
2268 * Returns 0 for success.
2269 */
2270int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm)
2271{
2272 int ret;
2273
3cd04343 2274 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3eb29dfb 2275 ret = snd_soc_dapm_sync_unlocked(dapm);
a73fb2df
LG		 2276 mutex_unlock(&dapm->card->dapm_mutex);
2277 return ret;
2b97eabc 2278}
a5302181 2279EXPORT_SYMBOL_GPL(snd_soc_dapm_sync);
2b97eabc 2280
2553628e
LPC		 2281static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
2282 struct snd_soc_dapm_widget *wsource, struct snd_soc_dapm_widget *wsink,
2283 const char *control,
2284 int (*connected)(struct snd_soc_dapm_widget *source,
2285 struct snd_soc_dapm_widget *sink))
2b97eabc
RP		 2286{
2287 struct snd_soc_dapm_path *path;
2553628e 2288 int ret;
2b97eabc
RP		 2289
2290 path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL);
2291 if (!path)
2292 return -ENOMEM;
2293
2294 path->source = wsource;
2295 path->sink = wsink;
2553628e 2296 path->connected = connected;
2b97eabc 2297 INIT_LIST_HEAD(&path->list);
69c2d346 2298 INIT_LIST_HEAD(&path->list_kcontrol);
2b97eabc
RP		 2299 INIT_LIST_HEAD(&path->list_source);
2300 INIT_LIST_HEAD(&path->list_sink);
2301
2302 /* check for external widgets */
2303 if (wsink->id == snd_soc_dapm_input) {
2304 if (wsource->id == snd_soc_dapm_micbias ||
2305 wsource->id == snd_soc_dapm_mic ||
087d53ab
RC		 2306 wsource->id == snd_soc_dapm_line ||
2307 wsource->id == snd_soc_dapm_output)
2b97eabc
RP		 2308 wsink->ext = 1;
2309 }
2310 if (wsource->id == snd_soc_dapm_output) {
2311 if (wsink->id == snd_soc_dapm_spk ||
2312 wsink->id == snd_soc_dapm_hp ||
1e39221e
SF		 2313 wsink->id == snd_soc_dapm_line ||
2314 wsink->id == snd_soc_dapm_input)
2b97eabc
RP		 2315 wsource->ext = 1;
2316 }
2317
34742cb0
LPC		 2318 dapm_mark_dirty(wsource, "Route added");
2319 dapm_mark_dirty(wsink, "Route added");
2320
2b97eabc
RP		 2321 /* connect static paths */
2322 if (control == NULL) {
8ddab3f5 2323 list_add(&path->list, &dapm->card->paths);
2b97eabc
RP		 2324 list_add(&path->list_sink, &wsink->sources);
2325 list_add(&path->list_source, &wsource->sinks);
2326 path->connect = 1;
2327 return 0;
2328 }
2329
2330 /* connect dynamic paths */
dc2bea61 2331 switch (wsink->id) {
2b97eabc
RP		 2332 case snd_soc_dapm_adc:
2333 case snd_soc_dapm_dac:
2334 case snd_soc_dapm_pga:
d88429a6 2335 case snd_soc_dapm_out_drv:
2b97eabc
RP		 2336 case snd_soc_dapm_input:
2337 case snd_soc_dapm_output:
1ab97c8c 2338 case snd_soc_dapm_siggen:
2b97eabc
RP		 2339 case snd_soc_dapm_micbias:
2340 case snd_soc_dapm_vmid:
2341 case snd_soc_dapm_pre:
2342 case snd_soc_dapm_post:
246d0a17 2343 case snd_soc_dapm_supply:
62ea874a 2344 case snd_soc_dapm_regulator_supply:
d7e7eb91 2345 case snd_soc_dapm_clock_supply:
010ff262
MB		 2346 case snd_soc_dapm_aif_in:
2347 case snd_soc_dapm_aif_out:
4616274d
MB		 2348 case snd_soc_dapm_dai_in:
2349 case snd_soc_dapm_dai_out:
c74184ed 2350 case snd_soc_dapm_dai_link:
57295073 2351 case snd_soc_dapm_kcontrol:
8ddab3f5 2352 list_add(&path->list, &dapm->card->paths);
2b97eabc
RP		 2353 list_add(&path->list_sink, &wsink->sources);
2354 list_add(&path->list_source, &wsource->sinks);
2355 path->connect = 1;
2356 return 0;
2357 case snd_soc_dapm_mux:
ce6120cc 2358 ret = dapm_connect_mux(dapm, wsource, wsink, path, control,
82cfecdc 2359 &wsink->kcontrol_news[0]);
2b97eabc
RP		 2360 if (ret != 0)
2361 goto err;
2362 break;
2363 case snd_soc_dapm_switch:
2364 case snd_soc_dapm_mixer:
ca9c1aae 2365 case snd_soc_dapm_mixer_named_ctl:
ce6120cc 2366 ret = dapm_connect_mixer(dapm, wsource, wsink, path, control);
2b97eabc
RP		 2367 if (ret != 0)
2368 goto err;
2369 break;
2370 case snd_soc_dapm_hp:
2371 case snd_soc_dapm_mic:
2372 case snd_soc_dapm_line:
2373 case snd_soc_dapm_spk:
8ddab3f5 2374 list_add(&path->list, &dapm->card->paths);
2b97eabc
RP		 2375 list_add(&path->list_sink, &wsink->sources);
2376 list_add(&path->list_source, &wsource->sinks);
2377 path->connect = 0;
2378 return 0;
2379 }
fabd0384 2380
2b97eabc 2381 return 0;
2553628e
LPC		 2382err:
2383 kfree(path);
2384 return ret;
2385}
2b97eabc 2386
2553628e 2387static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm,
a4e9154c 2388 const struct snd_soc_dapm_route *route)
2553628e
LPC		 2389{
2390 struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w;
2391 struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL;
2392 const char *sink;
2393 const char *source;
2394 char prefixed_sink[80];
2395 char prefixed_source[80];
94f99c87 2396 const char *prefix;
2553628e
LPC		 2397 int ret;
2398
94f99c87
LPC		 2399 prefix = soc_dapm_prefix(dapm);
2400 if (prefix) {
2553628e 2401 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
94f99c87 2402 prefix, route->sink);
2553628e
LPC		 2403 sink = prefixed_sink;
2404 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
94f99c87 2405 prefix, route->source);
2553628e
LPC		 2406 source = prefixed_source;
2407 } else {
2408 sink = route->sink;
2409 source = route->source;
2410 }
2411
2412 /*
2413 * find src and dest widgets over all widgets but favor a widget from
2414 * current DAPM context
2415 */
2416 list_for_each_entry(w, &dapm->card->widgets, list) {
2417 if (!wsink && !(strcmp(w->name, sink))) {
2418 wtsink = w;
2419 if (w->dapm == dapm)
2420 wsink = w;
2421 continue;
2422 }
2423 if (!wsource && !(strcmp(w->name, source))) {
2424 wtsource = w;
2425 if (w->dapm == dapm)
2426 wsource = w;
2427 }
2428 }
2429 /* use widget from another DAPM context if not found from this */
2430 if (!wsink)
2431 wsink = wtsink;
2432 if (!wsource)
2433 wsource = wtsource;
2434
2435 if (wsource == NULL) {
2436 dev_err(dapm->dev, "ASoC: no source widget found for %s\n",
2437 route->source);
2438 return -ENODEV;
2439 }
2440 if (wsink == NULL) {
2441 dev_err(dapm->dev, "ASoC: no sink widget found for %s\n",
2442 route->sink);
2443 return -ENODEV;
2444 }
2445
2446 ret = snd_soc_dapm_add_path(dapm, wsource, wsink, route->control,
2447 route->connected);
2448 if (ret)
2449 goto err;
2450
2451 return 0;
2b97eabc 2452err:
30a6a1a4 2453 dev_warn(dapm->dev, "ASoC: no dapm match for %s --> %s --> %s\n",
2553628e 2454 source, route->control, sink);
2b97eabc
RP		 2455 return ret;
2456}
105f1c28 2457
efcc3c61
MB		 2458static int snd_soc_dapm_del_route(struct snd_soc_dapm_context *dapm,
2459 const struct snd_soc_dapm_route *route)
2460{
2461 struct snd_soc_dapm_path *path, *p;
2462 const char *sink;
2463 const char *source;
2464 char prefixed_sink[80];
2465 char prefixed_source[80];
94f99c87 2466 const char *prefix;
efcc3c61
MB		 2467
2468 if (route->control) {
2469 dev_err(dapm->dev,
30a6a1a4 2470 "ASoC: Removal of routes with controls not supported\n");
efcc3c61
MB		 2471 return -EINVAL;
2472 }
2473
94f99c87
LPC		 2474 prefix = soc_dapm_prefix(dapm);
2475 if (prefix) {
efcc3c61 2476 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
94f99c87 2477 prefix, route->sink);
efcc3c61
MB		 2478 sink = prefixed_sink;
2479 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
94f99c87 2480 prefix, route->source);
efcc3c61
MB		 2481 source = prefixed_source;
2482 } else {
2483 sink = route->sink;
2484 source = route->source;
2485 }
2486
2487 path = NULL;
2488 list_for_each_entry(p, &dapm->card->paths, list) {
2489 if (strcmp(p->source->name, source) != 0)
2490 continue;
2491 if (strcmp(p->sink->name, sink) != 0)
2492 continue;
2493 path = p;
2494 break;
2495 }
2496
2497 if (path) {
2498 dapm_mark_dirty(path->source, "Route removed");
2499 dapm_mark_dirty(path->sink, "Route removed");
2500
8872293f 2501 dapm_free_path(path);
efcc3c61 2502 } else {
30a6a1a4 2503 dev_warn(dapm->dev, "ASoC: Route %s->%s does not exist\n",
efcc3c61
MB		 2504 source, sink);
2505 }
2506
2507 return 0;
2508}
2509
105f1c28
MB		 2510/**
2511 * snd_soc_dapm_add_routes - Add routes between DAPM widgets
ce6120cc 2512 * @dapm: DAPM context
105f1c28
MB		 2513 * @route: audio routes
2514 * @num: number of routes
2515 *
2516 * Connects 2 dapm widgets together via a named audio path. The sink is
2517 * the widget receiving the audio signal, whilst the source is the sender
2518 * of the audio signal.
2519 *
2520 * Returns 0 for success else error. On error all resources can be freed
2521 * with a call to snd_soc_card_free().
2522 */
ce6120cc 2523int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm,
105f1c28
MB		 2524 const struct snd_soc_dapm_route *route, int num)
2525{
62d4a4b9 2526 int i, r, ret = 0;
105f1c28 2527
a73fb2df 2528 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
105f1c28 2529 for (i = 0; i < num; i++) {
a4e9154c 2530 r = snd_soc_dapm_add_route(dapm, route);
62d4a4b9 2531 if (r < 0) {
30a6a1a4
LG		 2532 dev_err(dapm->dev, "ASoC: Failed to add route %s -> %s -> %s\n",
2533 route->source,
2534 route->control ? route->control : "direct",
2535 route->sink);
62d4a4b9 2536 ret = r;
105f1c28
MB		 2537 }
2538 route++;
2539 }
a73fb2df 2540 mutex_unlock(&dapm->card->dapm_mutex);
105f1c28 2541
60884c27 2542 return ret;
105f1c28
MB		 2543}
2544EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes);
2545
efcc3c61
MB		 2546/**
2547 * snd_soc_dapm_del_routes - Remove routes between DAPM widgets
2548 * @dapm: DAPM context
2549 * @route: audio routes
2550 * @num: number of routes
2551 *
2552 * Removes routes from the DAPM context.
2553 */
2554int snd_soc_dapm_del_routes(struct snd_soc_dapm_context *dapm,
2555 const struct snd_soc_dapm_route *route, int num)
2556{
2557 int i, ret = 0;
2558
2559 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2560 for (i = 0; i < num; i++) {
2561 snd_soc_dapm_del_route(dapm, route);
2562 route++;
2563 }
2564 mutex_unlock(&dapm->card->dapm_mutex);
2565
2566 return ret;
2567}
2568EXPORT_SYMBOL_GPL(snd_soc_dapm_del_routes);
2569
bf3a9e13
MB		 2570static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context *dapm,
2571 const struct snd_soc_dapm_route *route)
2572{
2573 struct snd_soc_dapm_widget *source = dapm_find_widget(dapm,
2574 route->source,
2575 true);
2576 struct snd_soc_dapm_widget *sink = dapm_find_widget(dapm,
2577 route->sink,
2578 true);
2579 struct snd_soc_dapm_path *path;
2580 int count = 0;
2581
2582 if (!source) {
30a6a1a4 2583 dev_err(dapm->dev, "ASoC: Unable to find source %s for weak route\n",
bf3a9e13
MB		 2584 route->source);
2585 return -ENODEV;
2586 }
2587
2588 if (!sink) {
30a6a1a4 2589 dev_err(dapm->dev, "ASoC: Unable to find sink %s for weak route\n",
bf3a9e13
MB		 2590 route->sink);
2591 return -ENODEV;
2592 }
2593
2594 if (route->control || route->connected)
30a6a1a4 2595 dev_warn(dapm->dev, "ASoC: Ignoring control for weak route %s->%s\n",
bf3a9e13
MB		 2596 route->source, route->sink);
2597
2598 list_for_each_entry(path, &source->sinks, list_source) {
2599 if (path->sink == sink) {
2600 path->weak = 1;
2601 count++;
2602 }
2603 }
2604
2605 if (count == 0)
30a6a1a4 2606 dev_err(dapm->dev, "ASoC: No path found for weak route %s->%s\n",
bf3a9e13
MB		 2607 route->source, route->sink);
2608 if (count > 1)
30a6a1a4 2609 dev_warn(dapm->dev, "ASoC: %d paths found for weak route %s->%s\n",
bf3a9e13
MB		 2610 count, route->source, route->sink);
2611
2612 return 0;
2613}
2614
2615/**
2616 * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak
2617 * @dapm: DAPM context
2618 * @route: audio routes
2619 * @num: number of routes
2620 *
2621 * Mark existing routes matching those specified in the passed array
2622 * as being weak, meaning that they are ignored for the purpose of
2623 * power decisions. The main intended use case is for sidetone paths
2624 * which couple audio between other independent paths if they are both
2625 * active in order to make the combination work better at the user
2626 * level but which aren't intended to be "used".
2627 *
2628 * Note that CODEC drivers should not use this as sidetone type paths
2629 * can frequently also be used as bypass paths.
2630 */
2631int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context *dapm,
2632 const struct snd_soc_dapm_route *route, int num)
2633{
2634 int i, err;
2635 int ret = 0;
2636
a73fb2df 2637 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
bf3a9e13
MB		 2638 for (i = 0; i < num; i++) {
2639 err = snd_soc_dapm_weak_route(dapm, route);
2640 if (err)
2641 ret = err;
2642 route++;
2643 }
a73fb2df 2644 mutex_unlock(&dapm->card->dapm_mutex);
bf3a9e13
MB		 2645
2646 return ret;
2647}
2648EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes);
2649
2b97eabc
RP		 2650/**
2651 * snd_soc_dapm_new_widgets - add new dapm widgets
ce6120cc 2652 * @dapm: DAPM context
2b97eabc
RP		 2653 *
2654 * Checks the codec for any new dapm widgets and creates them if found.
2655 *
2656 * Returns 0 for success.
2657 */
824ef826 2658int snd_soc_dapm_new_widgets(struct snd_soc_card *card)
2b97eabc
RP		 2659{
2660 struct snd_soc_dapm_widget *w;
b66a70d5 2661 unsigned int val;
2b97eabc 2662
95dd5cd6 2663 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
a73fb2df 2664
95dd5cd6 2665 list_for_each_entry(w, &card->widgets, list)
2b97eabc
RP		 2666 {
2667 if (w->new)
2668 continue;
2669
fad59888
SW		 2670 if (w->num_kcontrols) {
2671 w->kcontrols = kzalloc(w->num_kcontrols *
2672 sizeof(struct snd_kcontrol *),
2673 GFP_KERNEL);
a73fb2df 2674 if (!w->kcontrols) {
95dd5cd6 2675 mutex_unlock(&card->dapm_mutex);
fad59888 2676 return -ENOMEM;
a73fb2df 2677 }
fad59888
SW		 2678 }
2679
2b97eabc
RP		 2680 switch(w->id) {
2681 case snd_soc_dapm_switch:
2682 case snd_soc_dapm_mixer:
ca9c1aae 2683 case snd_soc_dapm_mixer_named_ctl:
4b80b8c2 2684 dapm_new_mixer(w);
2b97eabc
RP		 2685 break;
2686 case snd_soc_dapm_mux:
4b80b8c2 2687 dapm_new_mux(w);
2b97eabc 2688 break;
2b97eabc 2689 case snd_soc_dapm_pga:
d88429a6 2690 case snd_soc_dapm_out_drv:
4b80b8c2 2691 dapm_new_pga(w);
2b97eabc 2692 break;
7ca3a18b 2693 default:
2b97eabc
RP		 2694 break;
2695 }
b66a70d5
MB		 2696
2697 /* Read the initial power state from the device */
2698 if (w->reg >= 0) {
ce0fc93a 2699 soc_dapm_read(w->dapm, w->reg, &val);
f7d3c170 2700 val = val >> w->shift;
de9ba98b
LPC		 2701 val &= w->mask;
2702 if (val == w->on_val)
b66a70d5
MB		 2703 w->power = 1;
2704 }
2705
2b97eabc 2706 w->new = 1;
d5d1e0be 2707
7508b12a 2708 dapm_mark_dirty(w, "new widget");
d5d1e0be 2709 dapm_debugfs_add_widget(w);
2b97eabc
RP		 2710 }
2711
95dd5cd6
LPC		 2712 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2713 mutex_unlock(&card->dapm_mutex);
2b97eabc
RP		 2714 return 0;
2715}
2716EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets);
2717
2718/**
2719 * snd_soc_dapm_get_volsw - dapm mixer get callback
2720 * @kcontrol: mixer control
ac11a2b3 2721 * @ucontrol: control element information
2b97eabc
RP		 2722 *
2723 * Callback to get the value of a dapm mixer control.
2724 *
2725 * Returns 0 for success.
2726 */
2727int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol,
2728 struct snd_ctl_elem_value *ucontrol)
2729{
ce0fc93a
LPC		 2730 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
2731 struct snd_soc_card *card = dapm->card;
4eaa9819
JS		 2732 struct soc_mixer_control *mc =
2733 (struct soc_mixer_control *)kcontrol->private_value;
249ce138 2734 int reg = mc->reg;
815ecf8d 2735 unsigned int shift = mc->shift;
4eaa9819 2736 int max = mc->max;
815ecf8d 2737 unsigned int mask = (1 << fls(max)) - 1;
da602ab8 2738 unsigned int invert = mc->invert;
57295073 2739 unsigned int val;
ce0fc93a 2740 int ret = 0;
da602ab8
BT		 2741
2742 if (snd_soc_volsw_is_stereo(mc))
ce0fc93a 2743 dev_warn(dapm->dev,
30a6a1a4 2744 "ASoC: Control '%s' is stereo, which is not supported\n",
da602ab8 2745 kcontrol->id.name);
2b97eabc 2746
57295073 2747 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
ce0fc93a
LPC		 2748 if (dapm_kcontrol_is_powered(kcontrol) && reg != SND_SOC_NOPM) {
2749 ret = soc_dapm_read(dapm, reg, &val);
2750 val = (val >> shift) & mask;
2751 } else {
57295073 2752 val = dapm_kcontrol_get_value(kcontrol);
ce0fc93a 2753 }
57295073
LPC		 2754 mutex_unlock(&card->dapm_mutex);
2755
da602ab8 2756 if (invert)
57295073
LPC		 2757 ucontrol->value.integer.value[0] = max - val;
2758 else
2759 ucontrol->value.integer.value[0] = val;
2b97eabc 2760
ce0fc93a 2761 return ret;
2b97eabc
RP		 2762}
2763EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw);
2764
2765/**
2766 * snd_soc_dapm_put_volsw - dapm mixer set callback
2767 * @kcontrol: mixer control
ac11a2b3 2768 * @ucontrol: control element information
2b97eabc
RP		 2769 *
2770 * Callback to set the value of a dapm mixer control.
2771 *
2772 * Returns 0 for success.
2773 */
2774int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol,
2775 struct snd_ctl_elem_value *ucontrol)
2776{
ce0fc93a
LPC		 2777 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
2778 struct snd_soc_card *card = dapm->card;
4eaa9819
JS		 2779 struct soc_mixer_control *mc =
2780 (struct soc_mixer_control *)kcontrol->private_value;
249ce138 2781 int reg = mc->reg;
815ecf8d 2782 unsigned int shift = mc->shift;
4eaa9819 2783 int max = mc->max;
815ecf8d
JS		 2784 unsigned int mask = (1 << fls(max)) - 1;
2785 unsigned int invert = mc->invert;
e9cf7049 2786 unsigned int val;
18626c7e 2787 int connect, change, reg_change = 0;
97404f2e 2788 struct snd_soc_dapm_update update;
52765976 2789 int ret = 0;
2b97eabc 2790
da602ab8 2791 if (snd_soc_volsw_is_stereo(mc))
ce0fc93a 2792 dev_warn(dapm->dev,
30a6a1a4 2793 "ASoC: Control '%s' is stereo, which is not supported\n",
da602ab8
BT		 2794 kcontrol->id.name);
2795
2b97eabc 2796 val = (ucontrol->value.integer.value[0] & mask);
8a720718 2797 connect = !!val;
2b97eabc
RP		 2798
2799 if (invert)
a7a4ac86 2800 val = max - val;
2b97eabc 2801
3cd04343 2802 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2b97eabc 2803
249ce138 2804 change = dapm_kcontrol_set_value(kcontrol, val);
97404f2e 2805
18626c7e
JN		 2806 if (reg != SND_SOC_NOPM) {
2807 mask = mask << shift;
2808 val = val << shift;
2809
ce0fc93a 2810 reg_change = soc_dapm_test_bits(dapm, reg, mask, val);
18626c7e
JN		 2811 }
2812
2813 if (change || reg_change) {
2814 if (reg_change) {
2815 update.kcontrol = kcontrol;
2816 update.reg = reg;
2817 update.mask = mask;
2818 update.val = val;
2819 card->update = &update;
249ce138 2820 }
18626c7e 2821 change |= reg_change;
97404f2e 2822
52765976 2823 ret = soc_dapm_mixer_update_power(card, kcontrol, connect);
fafd2176 2824
564c6504 2825 card->update = NULL;
283375ce
MB		 2826 }
2827
a73fb2df 2828 mutex_unlock(&card->dapm_mutex);
52765976
NC		 2829
2830 if (ret > 0)
2831 soc_dpcm_runtime_update(card);
2832
56a67834 2833 return change;
2b97eabc
RP		 2834}
2835EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw);
2836
2837/**
2838 * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback
2839 * @kcontrol: mixer control
ac11a2b3 2840 * @ucontrol: control element information
2b97eabc
RP		 2841 *
2842 * Callback to get the value of a dapm enumerated double mixer control.
2843 *
2844 * Returns 0 for success.
2845 */
2846int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol,
2847 struct snd_ctl_elem_value *ucontrol)
2848{
ce0fc93a 2849 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
2b97eabc 2850 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
3727b496 2851 unsigned int reg_val, val;
ce0fc93a 2852 int ret = 0;
52765976 2853
236aaa68 2854 if (e->reg != SND_SOC_NOPM)
ce0fc93a 2855 ret = soc_dapm_read(dapm, e->reg, &reg_val);
236aaa68
LPC		 2856 else
2857 reg_val = dapm_kcontrol_get_value(kcontrol);
2e72f8e3 2858
2e72f8e3 2859 val = (reg_val >> e->shift_l) & e->mask;
3727b496 2860 ucontrol->value.enumerated.item[0] = snd_soc_enum_val_to_item(e, val);
2e72f8e3
PU		 2861 if (e->shift_l != e->shift_r) {
2862 val = (reg_val >> e->shift_r) & e->mask;
3727b496
LPC		 2863 val = snd_soc_enum_val_to_item(e, val);
2864 ucontrol->value.enumerated.item[1] = val;
2e72f8e3
PU		 2865 }
2866
ce0fc93a 2867 return ret;
2e72f8e3 2868}
2b97eabc 2869EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double);
2e72f8e3
PU		 2870
2871/**
2b97eabc 2872 * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback
2e72f8e3
PU		 2873 * @kcontrol: mixer control
2874 * @ucontrol: control element information
2875 *
2b97eabc 2876 * Callback to set the value of a dapm enumerated double mixer control.
2e72f8e3
PU		 2877 *
2878 * Returns 0 for success.
2879 */
2b97eabc 2880int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol,
2e72f8e3
PU		 2881 struct snd_ctl_elem_value *ucontrol)
2882{
ce0fc93a
LPC		 2883 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
2884 struct snd_soc_card *card = dapm->card;
74155556 2885 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
3727b496
LPC		 2886 unsigned int *item = ucontrol->value.enumerated.item;
2887 unsigned int val, change;
46f5822f 2888 unsigned int mask;
97404f2e 2889 struct snd_soc_dapm_update update;
52765976 2890 int ret = 0;
2e72f8e3 2891
3727b496 2892 if (item[0] >= e->items)
2e72f8e3 2893 return -EINVAL;
3727b496
LPC		 2894
2895 val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l;
2e72f8e3
PU		 2896 mask = e->mask << e->shift_l;
2897 if (e->shift_l != e->shift_r) {
3727b496 2898 if (item[1] > e->items)
2e72f8e3 2899 return -EINVAL;
3727b496 2900 val |= snd_soc_enum_item_to_val(e, item[1]) << e->shift_l;
2e72f8e3
PU		 2901 mask |= e->mask << e->shift_r;
2902 }
2903
3cd04343 2904 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
fafd2176 2905
236aaa68 2906 if (e->reg != SND_SOC_NOPM)
ce0fc93a 2907 change = soc_dapm_test_bits(dapm, e->reg, mask, val);
236aaa68
LPC		 2908 else
2909 change = dapm_kcontrol_set_value(kcontrol, val);
2910
fafd2176 2911 if (change) {
236aaa68
LPC		 2912 if (e->reg != SND_SOC_NOPM) {
2913 update.kcontrol = kcontrol;
2914 update.reg = e->reg;
2915 update.mask = mask;
2916 update.val = val;
2917 card->update = &update;
2918 }
1642e3d4 2919
3727b496 2920 ret = soc_dapm_mux_update_power(card, kcontrol, item[0], e);
fafd2176 2921
564c6504 2922 card->update = NULL;
fafd2176 2923 }
2e72f8e3 2924
a73fb2df 2925 mutex_unlock(&card->dapm_mutex);
52765976
NC		 2926
2927 if (ret > 0)
2928 soc_dpcm_runtime_update(card);
2929
97404f2e 2930 return change;
2e72f8e3 2931}
2b97eabc 2932EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double);
2e72f8e3 2933
8b37dbd2
MB		 2934/**
2935 * snd_soc_dapm_info_pin_switch - Info for a pin switch
2936 *
2937 * @kcontrol: mixer control
2938 * @uinfo: control element information
2939 *
2940 * Callback to provide information about a pin switch control.
2941 */
2942int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol,
2943 struct snd_ctl_elem_info *uinfo)
2944{
2945 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2946 uinfo->count = 1;
2947 uinfo->value.integer.min = 0;
2948 uinfo->value.integer.max = 1;
2949
2950 return 0;
2951}
2952EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch);
2953
2954/**
2955 * snd_soc_dapm_get_pin_switch - Get information for a pin switch
2956 *
2957 * @kcontrol: mixer control
2958 * @ucontrol: Value
2959 */
2960int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol,
2961 struct snd_ctl_elem_value *ucontrol)
2962{
48a8c394 2963 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
8b37dbd2
MB		 2964 const char *pin = (const char *)kcontrol->private_value;
2965
3cd04343 2966 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
8b37dbd2
MB		 2967
2968 ucontrol->value.integer.value[0] =
48a8c394 2969 snd_soc_dapm_get_pin_status(&card->dapm, pin);
8b37dbd2 2970
a73fb2df 2971 mutex_unlock(&card->dapm_mutex);
8b37dbd2
MB		 2972
2973 return 0;
2974}
2975EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch);
2976
2977/**
2978 * snd_soc_dapm_put_pin_switch - Set information for a pin switch
2979 *
2980 * @kcontrol: mixer control
2981 * @ucontrol: Value
2982 */
2983int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol,
2984 struct snd_ctl_elem_value *ucontrol)
2985{
48a8c394 2986 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
8b37dbd2
MB		 2987 const char *pin = (const char *)kcontrol->private_value;
2988
8b37dbd2 2989 if (ucontrol->value.integer.value[0])
48a8c394 2990 snd_soc_dapm_enable_pin(&card->dapm, pin);
8b37dbd2 2991 else
48a8c394 2992 snd_soc_dapm_disable_pin(&card->dapm, pin);
8b37dbd2 2993
a73fb2df 2994 snd_soc_dapm_sync(&card->dapm);
8b37dbd2
MB		 2995 return 0;
2996}
2997EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch);
2998
5ba06fc9
MB		 2999static struct snd_soc_dapm_widget *
3000snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
3001 const struct snd_soc_dapm_widget *widget)
2b97eabc
RP		 3002{
3003 struct snd_soc_dapm_widget *w;
94f99c87 3004 const char *prefix;
62ea874a 3005 int ret;
2b97eabc
RP		 3006
3007 if ((w = dapm_cnew_widget(widget)) == NULL)
5ba06fc9 3008 return NULL;
2b97eabc 3009
62ea874a
MB		 3010 switch (w->id) {
3011 case snd_soc_dapm_regulator_supply:
a3cc056b
LG		 3012 w->regulator = devm_regulator_get(dapm->dev, w->name);
3013 if (IS_ERR(w->regulator)) {
3014 ret = PTR_ERR(w->regulator);
30a6a1a4 3015 dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
62ea874a 3016 w->name, ret);
5ba06fc9 3017 return NULL;
62ea874a 3018 }
8784c77a 3019
de9ba98b 3020 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
8784c77a
MB		 3021 ret = regulator_allow_bypass(w->regulator, true);
3022 if (ret != 0)
3023 dev_warn(w->dapm->dev,
30686c35 3024 "ASoC: Failed to bypass %s: %d\n",
8784c77a
MB		 3025 w->name, ret);
3026 }
62ea874a 3027 break;
d7e7eb91 3028 case snd_soc_dapm_clock_supply:
165961ef 3029#ifdef CONFIG_CLKDEV_LOOKUP
695594f1 3030 w->clk = devm_clk_get(dapm->dev, w->name);
d7e7eb91
OL		 3031 if (IS_ERR(w->clk)) {
3032 ret = PTR_ERR(w->clk);
30a6a1a4 3033 dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
d7e7eb91
OL		 3034 w->name, ret);
3035 return NULL;
3036 }
ec02995a
MB		 3037#else
3038 return NULL;
3039#endif
d7e7eb91 3040 break;
62ea874a
MB		 3041 default:
3042 break;
3043 }
2b97eabc 3044
94f99c87
LPC		 3045 prefix = soc_dapm_prefix(dapm);
3046 if (prefix)
3047 w->name = kasprintf(GFP_KERNEL, "%s %s", prefix, widget->name);
2b581074
LPC		 3048 else
3049 w->name = kasprintf(GFP_KERNEL, "%s", widget->name);
3050
ead9b919
JN		 3051 if (w->name == NULL) {
3052 kfree(w);
5ba06fc9 3053 return NULL;
ead9b919 3054 }
ead9b919 3055
7ca3a18b
MB		 3056 switch (w->id) {
3057 case snd_soc_dapm_switch:
3058 case snd_soc_dapm_mixer:
3059 case snd_soc_dapm_mixer_named_ctl:
3060 w->power_check = dapm_generic_check_power;
3061 break;
3062 case snd_soc_dapm_mux:
7ca3a18b
MB		 3063 w->power_check = dapm_generic_check_power;
3064 break;
4616274d 3065 case snd_soc_dapm_dai_out:
7ca3a18b
MB		 3066 w->power_check = dapm_adc_check_power;
3067 break;
4616274d 3068 case snd_soc_dapm_dai_in:
7ca3a18b
MB		 3069 w->power_check = dapm_dac_check_power;
3070 break;
63c69a6e
MB		 3071 case snd_soc_dapm_adc:
3072 case snd_soc_dapm_aif_out:
3073 case snd_soc_dapm_dac:
3074 case snd_soc_dapm_aif_in:
7ca3a18b
MB		 3075 case snd_soc_dapm_pga:
3076 case snd_soc_dapm_out_drv:
3077 case snd_soc_dapm_input:
3078 case snd_soc_dapm_output:
3079 case snd_soc_dapm_micbias:
3080 case snd_soc_dapm_spk:
3081 case snd_soc_dapm_hp:
3082 case snd_soc_dapm_mic:
3083 case snd_soc_dapm_line:
c74184ed 3084 case snd_soc_dapm_dai_link:
7ca3a18b
MB		 3085 w->power_check = dapm_generic_check_power;
3086 break;
3087 case snd_soc_dapm_supply:
62ea874a 3088 case snd_soc_dapm_regulator_supply:
d7e7eb91 3089 case snd_soc_dapm_clock_supply:
57295073 3090 case snd_soc_dapm_kcontrol:
7ca3a18b
MB		 3091 w->power_check = dapm_supply_check_power;
3092 break;
3093 default:
3094 w->power_check = dapm_always_on_check_power;
3095 break;
3096 }
3097
ce6120cc
LG		 3098 w->dapm = dapm;
3099 w->codec = dapm->codec;
2b97eabc
RP		 3100 INIT_LIST_HEAD(&w->sources);
3101 INIT_LIST_HEAD(&w->sinks);
3102 INIT_LIST_HEAD(&w->list);
db432b41 3103 INIT_LIST_HEAD(&w->dirty);
97c866de 3104 list_add(&w->list, &dapm->card->widgets);
2b97eabc
RP		 3105
3106 /* machine layer set ups unconnected pins and insertions */
3107 w->connected = 1;
5ba06fc9 3108 return w;
2b97eabc 3109}
2b97eabc 3110
4ba1327a
MB		 3111/**
3112 * snd_soc_dapm_new_controls - create new dapm controls
ce6120cc 3113 * @dapm: DAPM context
4ba1327a
MB		 3114 * @widget: widget array
3115 * @num: number of widgets
3116 *
3117 * Creates new DAPM controls based upon the templates.
3118 *
3119 * Returns 0 for success else error.
3120 */
ce6120cc 3121int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm,
4ba1327a
MB		 3122 const struct snd_soc_dapm_widget *widget,
3123 int num)
3124{
5ba06fc9
MB		 3125 struct snd_soc_dapm_widget *w;
3126 int i;
60884c27 3127 int ret = 0;
4ba1327a 3128
a73fb2df 3129 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
4ba1327a 3130 for (i = 0; i < num; i++) {
5ba06fc9
MB		 3131 w = snd_soc_dapm_new_control(dapm, widget);
3132 if (!w) {
f7d41ae8 3133 dev_err(dapm->dev,
5ba06fc9
MB		 3134 "ASoC: Failed to create DAPM control %s\n",
3135 widget->name);
60884c27
DC		 3136 ret = -ENOMEM;
3137 break;
b8b33cb5 3138 }
4ba1327a
MB		 3139 widget++;
3140 }
a73fb2df 3141 mutex_unlock(&dapm->card->dapm_mutex);
60884c27 3142 return ret;
4ba1327a
MB		 3143}
3144EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls);
3145
c74184ed
MB		 3146static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w,
3147 struct snd_kcontrol *kcontrol, int event)
3148{
3149 struct snd_soc_dapm_path *source_p, *sink_p;
3150 struct snd_soc_dai *source, *sink;
3151 const struct snd_soc_pcm_stream *config = w->params;
3152 struct snd_pcm_substream substream;
9747cec2 3153 struct snd_pcm_hw_params *params = NULL;
c74184ed
MB		 3154 u64 fmt;
3155 int ret;
3156
bf4edea8
TI		 3157 if (WARN_ON(!config) ||
3158 WARN_ON(list_empty(&w->sources) || list_empty(&w->sinks)))
3159 return -EINVAL;
c74184ed
MB		 3160
3161 /* We only support a single source and sink, pick the first */
3162 source_p = list_first_entry(&w->sources, struct snd_soc_dapm_path,
3163 list_sink);
3164 sink_p = list_first_entry(&w->sinks, struct snd_soc_dapm_path,
3165 list_source);
3166
bf4edea8
TI		 3167 if (WARN_ON(!source_p || !sink_p) ||
3168 WARN_ON(!sink_p->source || !source_p->sink) ||
3169 WARN_ON(!source_p->source || !sink_p->sink))
3170 return -EINVAL;
c74184ed
MB		 3171
3172 source = source_p->source->priv;
3173 sink = sink_p->sink->priv;
3174
3175 /* Be a little careful as we don't want to overflow the mask array */
3176 if (config->formats) {
3177 fmt = ffs(config->formats) - 1;
3178 } else {
30a6a1a4 3179 dev_warn(w->dapm->dev, "ASoC: Invalid format %llx specified\n",
c74184ed
MB		 3180 config->formats);
3181 fmt = 0;
3182 }
3183
3184 /* Currently very limited parameter selection */
9747cec2
MB		 3185 params = kzalloc(sizeof(*params), GFP_KERNEL);
3186 if (!params) {
3187 ret = -ENOMEM;
3188 goto out;
3189 }
3190 snd_mask_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), fmt);
c74184ed 3191
9747cec2 3192 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->min =
c74184ed 3193 config->rate_min;
9747cec2 3194 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->max =
c74184ed
MB		 3195 config->rate_max;
3196
9747cec2 3197 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->min
c74184ed 3198 = config->channels_min;
9747cec2 3199 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max
c74184ed
MB		 3200 = config->channels_max;
3201
3202 memset(&substream, 0, sizeof(substream));
3203
3204 switch (event) {
3205 case SND_SOC_DAPM_PRE_PMU:
3206 if (source->driver->ops && source->driver->ops->hw_params) {
3207 substream.stream = SNDRV_PCM_STREAM_CAPTURE;
3208 ret = source->driver->ops->hw_params(&substream,
9747cec2 3209 params, source);
c74184ed
MB		 3210 if (ret != 0) {
3211 dev_err(source->dev,
30a6a1a4 3212 "ASoC: hw_params() failed: %d\n", ret);
9747cec2 3213 goto out;
c74184ed
MB		 3214 }
3215 }
3216
3217 if (sink->driver->ops && sink->driver->ops->hw_params) {
3218 substream.stream = SNDRV_PCM_STREAM_PLAYBACK;
9747cec2 3219 ret = sink->driver->ops->hw_params(&substream, params,
c74184ed
MB		 3220 sink);
3221 if (ret != 0) {
3222 dev_err(sink->dev,
30a6a1a4 3223 "ASoC: hw_params() failed: %d\n", ret);
9747cec2 3224 goto out;
c74184ed
MB		 3225 }
3226 }
3227 break;
3228
3229 case SND_SOC_DAPM_POST_PMU:
da18396f
MB		 3230 ret = snd_soc_dai_digital_mute(sink, 0,
3231 SNDRV_PCM_STREAM_PLAYBACK);
c74184ed 3232 if (ret != 0 && ret != -ENOTSUPP)
30a6a1a4 3233 dev_warn(sink->dev, "ASoC: Failed to unmute: %d\n", ret);
9747cec2 3234 ret = 0;
c74184ed
MB		 3235 break;
3236
3237 case SND_SOC_DAPM_PRE_PMD:
da18396f
MB		 3238 ret = snd_soc_dai_digital_mute(sink, 1,
3239 SNDRV_PCM_STREAM_PLAYBACK);
c74184ed 3240 if (ret != 0 && ret != -ENOTSUPP)
30a6a1a4 3241 dev_warn(sink->dev, "ASoC: Failed to mute: %d\n", ret);
9747cec2 3242 ret = 0;
c74184ed
MB		 3243 break;
3244
3245 default:
a6ed0608 3246 WARN(1, "Unknown event %d\n", event);
c74184ed
MB		 3247 return -EINVAL;
3248 }
3249
9747cec2
MB		 3250out:
3251 kfree(params);
3252 return ret;
c74184ed
MB		 3253}
3254
3255int snd_soc_dapm_new_pcm(struct snd_soc_card *card,
3256 const struct snd_soc_pcm_stream *params,
3257 struct snd_soc_dapm_widget *source,
3258 struct snd_soc_dapm_widget *sink)
3259{
c74184ed
MB		 3260 struct snd_soc_dapm_widget template;
3261 struct snd_soc_dapm_widget *w;
3262 size_t len;
3263 char *link_name;
fe83897f 3264 int ret;
c74184ed
MB		 3265
3266 len = strlen(source->name) + strlen(sink->name) + 2;
3267 link_name = devm_kzalloc(card->dev, len, GFP_KERNEL);
3268 if (!link_name)
3269 return -ENOMEM;
3270 snprintf(link_name, len, "%s-%s", source->name, sink->name);
3271
3272 memset(&template, 0, sizeof(template));
3273 template.reg = SND_SOC_NOPM;
3274 template.id = snd_soc_dapm_dai_link;
3275 template.name = link_name;
3276 template.event = snd_soc_dai_link_event;
3277 template.event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
3278 SND_SOC_DAPM_PRE_PMD;
3279
30a6a1a4 3280 dev_dbg(card->dev, "ASoC: adding %s widget\n", link_name);
c74184ed
MB		 3281
3282 w = snd_soc_dapm_new_control(&card->dapm, &template);
3283 if (!w) {
30a6a1a4 3284 dev_err(card->dev, "ASoC: Failed to create %s widget\n",
c74184ed
MB		 3285 link_name);
3286 return -ENOMEM;
3287 }
3288
3289 w->params = params;
3290
fe83897f
LPC		 3291 ret = snd_soc_dapm_add_path(&card->dapm, source, w, NULL, NULL);
3292 if (ret)
3293 return ret;
3294 return snd_soc_dapm_add_path(&card->dapm, w, sink, NULL, NULL);
c74184ed
MB		 3295}
3296
888df395
MB		 3297int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context *dapm,
3298 struct snd_soc_dai *dai)
2b97eabc 3299{
888df395 3300 struct snd_soc_dapm_widget template;
2b97eabc
RP		 3301 struct snd_soc_dapm_widget *w;
3302
888df395
MB		 3303 WARN_ON(dapm->dev != dai->dev);
3304
3305 memset(&template, 0, sizeof(template));
3306 template.reg = SND_SOC_NOPM;
3307
3308 if (dai->driver->playback.stream_name) {
4616274d 3309 template.id = snd_soc_dapm_dai_in;
888df395
MB		 3310 template.name = dai->driver->playback.stream_name;
3311 template.sname = dai->driver->playback.stream_name;
3312
30a6a1a4 3313 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
888df395
MB		 3314 template.name);
3315
3316 w = snd_soc_dapm_new_control(dapm, &template);
3317 if (!w) {
30a6a1a4 3318 dev_err(dapm->dev, "ASoC: Failed to create %s widget\n",
888df395 3319 dai->driver->playback.stream_name);
298402a3 3320 return -ENOMEM;
888df395
MB		 3321 }
3322
3323 w->priv = dai;
3324 dai->playback_widget = w;
3325 }
3326
3327 if (dai->driver->capture.stream_name) {
4616274d 3328 template.id = snd_soc_dapm_dai_out;
888df395
MB		 3329 template.name = dai->driver->capture.stream_name;
3330 template.sname = dai->driver->capture.stream_name;
3331
30a6a1a4 3332 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
888df395
MB		 3333 template.name);
3334
3335 w = snd_soc_dapm_new_control(dapm, &template);
3336 if (!w) {
30a6a1a4 3337 dev_err(dapm->dev, "ASoC: Failed to create %s widget\n",
888df395 3338 dai->driver->capture.stream_name);
298402a3 3339 return -ENOMEM;
888df395
MB		 3340 }
3341
3342 w->priv = dai;
3343 dai->capture_widget = w;
3344 }
3345
3346 return 0;
3347}
3348
3349int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card)
3350{
3351 struct snd_soc_dapm_widget *dai_w, *w;
0f9bd7b1 3352 struct snd_soc_dapm_widget *src, *sink;
888df395 3353 struct snd_soc_dai *dai;
888df395
MB		 3354
3355 /* For each DAI widget... */
3356 list_for_each_entry(dai_w, &card->widgets, list) {
4616274d
MB		 3357 switch (dai_w->id) {
3358 case snd_soc_dapm_dai_in:
3359 case snd_soc_dapm_dai_out:
3360 break;
3361 default:
2b97eabc 3362 continue;
4616274d 3363 }
888df395
MB		 3364
3365 dai = dai_w->priv;
3366
3367 /* ...find all widgets with the same stream and link them */
3368 list_for_each_entry(w, &card->widgets, list) {
3369 if (w->dapm != dai_w->dapm)
3370 continue;
3371
4616274d
MB		 3372 switch (w->id) {
3373 case snd_soc_dapm_dai_in:
3374 case snd_soc_dapm_dai_out:
888df395 3375 continue;
4616274d
MB		 3376 default:
3377 break;
3378 }
888df395 3379
19c2c5f5 3380 if (!w->sname || !strstr(w->sname, dai_w->name))
888df395
MB		 3381 continue;
3382
0f9bd7b1
LPC		 3383 if (dai_w->id == snd_soc_dapm_dai_in) {
3384 src = dai_w;
3385 sink = w;
3386 } else {
3387 src = w;
3388 sink = dai_w;
2b97eabc 3389 }
0f9bd7b1
LPC		 3390 dev_dbg(dai->dev, "%s -> %s\n", src->name, sink->name);
3391 snd_soc_dapm_add_path(w->dapm, src, sink, NULL, NULL);
2b97eabc
RP		 3392 }
3393 }
2b97eabc 3394
888df395
MB		 3395 return 0;
3396}
64a648c2 3397
b893ea5f
LG		 3398void snd_soc_dapm_connect_dai_link_widgets(struct snd_soc_card *card)
3399{
3400 struct snd_soc_pcm_runtime *rtd = card->rtd;
9887c20b 3401 struct snd_soc_dapm_widget *sink, *source;
b893ea5f 3402 struct snd_soc_dai *cpu_dai, *codec_dai;
b893ea5f
LG		 3403 int i;
3404
b893ea5f
LG		 3405 /* for each BE DAI link... */
3406 for (i = 0; i < card->num_rtd; i++) {
3407 rtd = &card->rtd[i];
3408 cpu_dai = rtd->cpu_dai;
3409 codec_dai = rtd->codec_dai;
3410
ca5106ae
LPC		 3411 /*
3412 * dynamic FE links have no fixed DAI mapping.
3413 * CODEC<->CODEC links have no direct connection.
3414 */
3415 if (rtd->dai_link->dynamic || rtd->dai_link->params)
b893ea5f
LG		 3416 continue;
3417
3418 /* there is no point in connecting BE DAI links with dummies */
3419 if (snd_soc_dai_is_dummy(codec_dai) ||
3420 snd_soc_dai_is_dummy(cpu_dai))
3421 continue;
3422
3423 /* connect BE DAI playback if widgets are valid */
3424 if (codec_dai->playback_widget && cpu_dai->playback_widget) {
9887c20b
LPC		 3425 source = cpu_dai->playback_widget;
3426 sink = codec_dai->playback_widget;
b893ea5f 3427 dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n",
f4333203
LPC		 3428 cpu_dai->component->name, source->name,
3429 codec_dai->component->name, sink->name);
b893ea5f 3430
9887c20b
LPC		 3431 snd_soc_dapm_add_path(&card->dapm, source, sink,
3432 NULL, NULL);
b893ea5f
LG		 3433 }
3434
3435 /* connect BE DAI capture if widgets are valid */
3436 if (codec_dai->capture_widget && cpu_dai->capture_widget) {
9887c20b
LPC		 3437 source = codec_dai->capture_widget;
3438 sink = cpu_dai->capture_widget;
b893ea5f 3439 dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n",
f4333203
LPC		 3440 codec_dai->component->name, source->name,
3441 cpu_dai->component->name, sink->name);
b893ea5f 3442
9887c20b
LPC		 3443 snd_soc_dapm_add_path(&card->dapm, source, sink,
3444 NULL, NULL);
b893ea5f 3445 }
b893ea5f
LG		 3446 }
3447}
3448
c471fdd1 3449static void soc_dapm_dai_stream_event(struct snd_soc_dai *dai, int stream,
d9b0951b 3450 int event)
2b97eabc 3451{
c471fdd1 3452 struct snd_soc_dapm_widget *w;
7bd3a6f3 3453
c471fdd1
LPC		 3454 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
3455 w = dai->playback_widget;
3456 else
3457 w = dai->capture_widget;
fe360685 3458
c471fdd1
LPC		 3459 if (w) {
3460 dapm_mark_dirty(w, "stream event");
d9b0951b
LG		 3461
3462 switch (event) {
3463 case SND_SOC_DAPM_STREAM_START:
c471fdd1 3464 w->active = 1;
d9b0951b
LG		 3465 break;
3466 case SND_SOC_DAPM_STREAM_STOP:
c471fdd1 3467 w->active = 0;
d9b0951b
LG		 3468 break;
3469 case SND_SOC_DAPM_STREAM_SUSPEND:
3470 case SND_SOC_DAPM_STREAM_RESUME:
3471 case SND_SOC_DAPM_STREAM_PAUSE_PUSH:
3472 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE:
3473 break;
3474 }
3475 }
c471fdd1 3476}
d9b0951b 3477
c471fdd1
LPC		 3478static void soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
3479 int event)
3480{
3481 soc_dapm_dai_stream_event(rtd->cpu_dai, stream, event);
3482 soc_dapm_dai_stream_event(rtd->codec_dai, stream, event);
2b97eabc 3483
95dd5cd6 3484 dapm_power_widgets(rtd->card, event);
ce6120cc
LG		 3485}
3486
3487/**
3488 * snd_soc_dapm_stream_event - send a stream event to the dapm core
3489 * @rtd: PCM runtime data
3490 * @stream: stream name
3491 * @event: stream event
3492 *
3493 * Sends a stream event to the dapm core. The core then makes any
3494 * necessary widget power changes.
3495 *
3496 * Returns 0 for success else error.
3497 */
d9b0951b
LG		 3498void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
3499 int event)
ce6120cc 3500{
a73fb2df 3501 struct snd_soc_card *card = rtd->card;
ce6120cc 3502
3cd04343 3503 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
d9b0951b 3504 soc_dapm_stream_event(rtd, stream, event);
a73fb2df 3505 mutex_unlock(&card->dapm_mutex);
2b97eabc 3506}
2b97eabc 3507
11391100
CK		 3508/**
3509 * snd_soc_dapm_enable_pin_unlocked - enable pin.
3510 * @dapm: DAPM context
3511 * @pin: pin name
3512 *
3513 * Enables input/output pin and its parents or children widgets iff there is
3514 * a valid audio route and active audio stream.
3515 *
3516 * Requires external locking.
3517 *
3518 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3519 * do any widget power switching.
3520 */
3521int snd_soc_dapm_enable_pin_unlocked(struct snd_soc_dapm_context *dapm,
3522 const char *pin)
3523{
3524 return snd_soc_dapm_set_pin(dapm, pin, 1);
3525}
3526EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin_unlocked);
3527
2b97eabc 3528/**
a5302181 3529 * snd_soc_dapm_enable_pin - enable pin.
ce6120cc 3530 * @dapm: DAPM context
a5302181 3531 * @pin: pin name
2b97eabc 3532 *
74b8f955 3533 * Enables input/output pin and its parents or children widgets iff there is
a5302181 3534 * a valid audio route and active audio stream.
11391100 3535 *
a5302181
LG		 3536 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3537 * do any widget power switching.
2b97eabc 3538 */
ce6120cc 3539int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin)
2b97eabc 3540{
11391100
CK		 3541 int ret;
3542
3543 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3544
3545 ret = snd_soc_dapm_set_pin(dapm, pin, 1);
3546
3547 mutex_unlock(&dapm->card->dapm_mutex);
3548
3549 return ret;
a5302181
LG		 3550}
3551EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin);
2b97eabc 3552
da34183e 3553/**
11391100 3554 * snd_soc_dapm_force_enable_pin_unlocked - force a pin to be enabled
ce6120cc 3555 * @dapm: DAPM context
da34183e
MB		 3556 * @pin: pin name
3557 *
3558 * Enables input/output pin regardless of any other state. This is
3559 * intended for use with microphone bias supplies used in microphone
3560 * jack detection.
3561 *
11391100
CK		 3562 * Requires external locking.
3563 *
da34183e
MB		 3564 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3565 * do any widget power switching.
3566 */
11391100
CK		 3567int snd_soc_dapm_force_enable_pin_unlocked(struct snd_soc_dapm_context *dapm,
3568 const char *pin)
da34183e 3569{
91a5fca4 3570 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
da34183e 3571
91a5fca4 3572 if (!w) {
30a6a1a4 3573 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
91a5fca4 3574 return -EINVAL;
0d86733c
MB		 3575 }
3576
30a6a1a4 3577 dev_dbg(w->dapm->dev, "ASoC: force enable pin %s\n", pin);
91a5fca4
LPC		 3578 w->connected = 1;
3579 w->force = 1;
75c1f891 3580 dapm_mark_dirty(w, "force enable");
da34183e 3581
91a5fca4 3582 return 0;
da34183e 3583}
11391100
CK		 3584EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin_unlocked);
3585
3586/**
3587 * snd_soc_dapm_force_enable_pin - force a pin to be enabled
3588 * @dapm: DAPM context
3589 * @pin: pin name
3590 *
3591 * Enables input/output pin regardless of any other state. This is
3592 * intended for use with microphone bias supplies used in microphone
3593 * jack detection.
3594 *
3595 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3596 * do any widget power switching.
3597 */
3598int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm,
3599 const char *pin)
3600{
3601 int ret;
3602
3603 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3604
3605 ret = snd_soc_dapm_force_enable_pin_unlocked(dapm, pin);
3606
3607 mutex_unlock(&dapm->card->dapm_mutex);
3608
3609 return ret;
3610}
da34183e
MB		 3611EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin);
3612
11391100
CK		 3613/**
3614 * snd_soc_dapm_disable_pin_unlocked - disable pin.
3615 * @dapm: DAPM context
3616 * @pin: pin name
3617 *
3618 * Disables input/output pin and its parents or children widgets.
3619 *
3620 * Requires external locking.
3621 *
3622 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3623 * do any widget power switching.
3624 */
3625int snd_soc_dapm_disable_pin_unlocked(struct snd_soc_dapm_context *dapm,
3626 const char *pin)
3627{
3628 return snd_soc_dapm_set_pin(dapm, pin, 0);
3629}
3630EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin_unlocked);
3631
a5302181
LG		 3632/**
3633 * snd_soc_dapm_disable_pin - disable pin.
ce6120cc 3634 * @dapm: DAPM context
a5302181
LG		 3635 * @pin: pin name
3636 *
74b8f955 3637 * Disables input/output pin and its parents or children widgets.
11391100 3638 *
a5302181
LG		 3639 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3640 * do any widget power switching.
3641 */
ce6120cc
LG		 3642int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm,
3643 const char *pin)
a5302181 3644{
11391100
CK		 3645 int ret;
3646
3647 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3648
3649 ret = snd_soc_dapm_set_pin(dapm, pin, 0);
3650
3651 mutex_unlock(&dapm->card->dapm_mutex);
3652
3653 return ret;
2b97eabc 3654}
a5302181 3655EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin);
2b97eabc 3656
11391100
CK		 3657/**
3658 * snd_soc_dapm_nc_pin_unlocked - permanently disable pin.
3659 * @dapm: DAPM context
3660 * @pin: pin name
3661 *
3662 * Marks the specified pin as being not connected, disabling it along
3663 * any parent or child widgets. At present this is identical to
3664 * snd_soc_dapm_disable_pin() but in future it will be extended to do
3665 * additional things such as disabling controls which only affect
3666 * paths through the pin.
3667 *
3668 * Requires external locking.
3669 *
3670 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3671 * do any widget power switching.
3672 */
3673int snd_soc_dapm_nc_pin_unlocked(struct snd_soc_dapm_context *dapm,
3674 const char *pin)
3675{
3676 return snd_soc_dapm_set_pin(dapm, pin, 0);
3677}
3678EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin_unlocked);
3679
5817b52a
MB		 3680/**
3681 * snd_soc_dapm_nc_pin - permanently disable pin.
ce6120cc 3682 * @dapm: DAPM context
5817b52a
MB		 3683 * @pin: pin name
3684 *
3685 * Marks the specified pin as being not connected, disabling it along
3686 * any parent or child widgets. At present this is identical to
3687 * snd_soc_dapm_disable_pin() but in future it will be extended to do
3688 * additional things such as disabling controls which only affect
3689 * paths through the pin.
3690 *
3691 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3692 * do any widget power switching.
3693 */
ce6120cc 3694int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin)
5817b52a 3695{
11391100
CK		 3696 int ret;
3697
3698 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3699
3700 ret = snd_soc_dapm_set_pin(dapm, pin, 0);
3701
3702 mutex_unlock(&dapm->card->dapm_mutex);
3703
3704 return ret;
5817b52a
MB		 3705}
3706EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin);
3707
eeec12bf 3708/**
a5302181 3709 * snd_soc_dapm_get_pin_status - get audio pin status
ce6120cc 3710 * @dapm: DAPM context
a5302181 3711 * @pin: audio signal pin endpoint (or start point)
eeec12bf 3712 *
a5302181 3713 * Get audio pin status - connected or disconnected.
eeec12bf 3714 *
a5302181 3715 * Returns 1 for connected otherwise 0.
eeec12bf 3716 */
ce6120cc
LG		 3717int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm,
3718 const char *pin)
eeec12bf 3719{
91a5fca4 3720 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
eeec12bf 3721
91a5fca4
LPC		 3722 if (w)
3723 return w->connected;
a68b38ad 3724
eeec12bf
GG		 3725 return 0;
3726}
a5302181 3727EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status);
eeec12bf 3728
1547aba9
MB		 3729/**
3730 * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint
ce6120cc 3731 * @dapm: DAPM context
1547aba9
MB		 3732 * @pin: audio signal pin endpoint (or start point)
3733 *
3734 * Mark the given endpoint or pin as ignoring suspend. When the
3735 * system is disabled a path between two endpoints flagged as ignoring
3736 * suspend will not be disabled. The path must already be enabled via
3737 * normal means at suspend time, it will not be turned on if it was not
3738 * already enabled.
3739 */
ce6120cc
LG		 3740int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm,
3741 const char *pin)
1547aba9 3742{
91a5fca4 3743 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, false);
1547aba9 3744
91a5fca4 3745 if (!w) {
30a6a1a4 3746 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
91a5fca4 3747 return -EINVAL;
1547aba9
MB		 3748 }
3749
91a5fca4
LPC		 3750 w->ignore_suspend = 1;
3751
3752 return 0;
1547aba9
MB		 3753}
3754EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend);
3755
1633281b
SW		 3756static bool snd_soc_dapm_widget_in_card_paths(struct snd_soc_card *card,
3757 struct snd_soc_dapm_widget *w)
3758{
3759 struct snd_soc_dapm_path *p;
3760
3761 list_for_each_entry(p, &card->paths, list) {
3762 if ((p->source == w) || (p->sink == w)) {
3763 dev_dbg(card->dev,
3764 "... Path %s(id:%d dapm:%p) - %s(id:%d dapm:%p)\n",
3765 p->source->name, p->source->id, p->source->dapm,
3766 p->sink->name, p->sink->id, p->sink->dapm);
3767
3768 /* Connected to something other than the codec */
3769 if (p->source->dapm != p->sink->dapm)
3770 return true;
3771 /*
3772 * Loopback connection from codec external pin to
3773 * codec external pin
3774 */
3775 if (p->sink->id == snd_soc_dapm_input) {
3776 switch (p->source->id) {
3777 case snd_soc_dapm_output:
3778 case snd_soc_dapm_micbias:
3779 return true;
3780 default:
3781 break;
3782 }
3783 }
3784 }
3785 }
3786
3787 return false;
3788}
3789
3790/**
7df37884
LPC		 3791 * snd_soc_dapm_auto_nc_pins - call snd_soc_dapm_nc_pin for unused pins
3792 * @card: The card whose pins should be processed
1633281b 3793 *
7df37884
LPC		 3794 * Automatically call snd_soc_dapm_nc_pin() for any external pins in the card
3795 * which are unused. Pins are used if they are connected externally to a
3796 * component, whether that be to some other device, or a loop-back connection to
3797 * the component itself.
1633281b 3798 */
7df37884 3799void snd_soc_dapm_auto_nc_pins(struct snd_soc_card *card)
1633281b 3800{
1633281b
SW		 3801 struct snd_soc_dapm_widget *w;
3802
7df37884 3803 dev_dbg(card->dev, "ASoC: Auto NC: DAPMs: card:%p\n", &card->dapm);
1633281b
SW		 3804
3805 list_for_each_entry(w, &card->widgets, list) {
1633281b
SW		 3806 switch (w->id) {
3807 case snd_soc_dapm_input:
3808 case snd_soc_dapm_output:
3809 case snd_soc_dapm_micbias:
7df37884 3810 dev_dbg(card->dev, "ASoC: Auto NC: Checking widget %s\n",
1633281b
SW		 3811 w->name);
3812 if (!snd_soc_dapm_widget_in_card_paths(card, w)) {
7df37884 3813 dev_dbg(card->dev,
1633281b 3814 "... Not in map; disabling\n");
7df37884 3815 snd_soc_dapm_nc_pin(w->dapm, w->name);
1633281b
SW		 3816 }
3817 break;
3818 default:
3819 break;
3820 }
3821 }
3822}
3823
2b97eabc
RP		 3824/**
3825 * snd_soc_dapm_free - free dapm resources
728a5222 3826 * @dapm: DAPM context
2b97eabc
RP		 3827 *
3828 * Free all dapm widgets and resources.
3829 */
ce6120cc 3830void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm)
2b97eabc 3831{
ce6120cc 3832 snd_soc_dapm_sys_remove(dapm->dev);
6c45e126 3833 dapm_debugfs_cleanup(dapm);
ce6120cc 3834 dapm_free_widgets(dapm);
7be31be8 3835 list_del(&dapm->list);
2b97eabc
RP		 3836}
3837EXPORT_SYMBOL_GPL(snd_soc_dapm_free);
3838
57996358 3839static void soc_dapm_shutdown_dapm(struct snd_soc_dapm_context *dapm)
51737470 3840{
01005a72 3841 struct snd_soc_card *card = dapm->card;
51737470
MB		 3842 struct snd_soc_dapm_widget *w;
3843 LIST_HEAD(down_list);
3844 int powerdown = 0;
3845
01005a72
LG		 3846 mutex_lock(&card->dapm_mutex);
3847
97c866de
JN		 3848 list_for_each_entry(w, &dapm->card->widgets, list) {
3849 if (w->dapm != dapm)
3850 continue;
51737470 3851 if (w->power) {
828a842f 3852 dapm_seq_insert(w, &down_list, false);
c2caa4da 3853 w->power = 0;
51737470
MB		 3854 powerdown = 1;
3855 }
3856 }
3857
3858 /* If there were no widgets to power down we're already in
3859 * standby.
3860 */
3861 if (powerdown) {
7679e42e
MB		 3862 if (dapm->bias_level == SND_SOC_BIAS_ON)
3863 snd_soc_dapm_set_bias_level(dapm,
3864 SND_SOC_BIAS_PREPARE);
95dd5cd6 3865 dapm_seq_run(card, &down_list, 0, false);
7679e42e
MB		 3866 if (dapm->bias_level == SND_SOC_BIAS_PREPARE)
3867 snd_soc_dapm_set_bias_level(dapm,
3868 SND_SOC_BIAS_STANDBY);
51737470 3869 }
01005a72
LG		 3870
3871 mutex_unlock(&card->dapm_mutex);
f0fba2ad
LG		 3872}
3873
3874/*
3875 * snd_soc_dapm_shutdown - callback for system shutdown
3876 */
3877void snd_soc_dapm_shutdown(struct snd_soc_card *card)
3878{
57996358 3879 struct snd_soc_dapm_context *dapm;
f0fba2ad 3880
57996358 3881 list_for_each_entry(dapm, &card->dapm_list, list) {
17282ba4
XX		 3882 if (dapm != &card->dapm) {
3883 soc_dapm_shutdown_dapm(dapm);
3884 if (dapm->bias_level == SND_SOC_BIAS_STANDBY)
3885 snd_soc_dapm_set_bias_level(dapm,
3886 SND_SOC_BIAS_OFF);
3887 }
ce6120cc 3888 }
17282ba4
XX		 3889
3890 soc_dapm_shutdown_dapm(&card->dapm);
3891 if (card->dapm.bias_level == SND_SOC_BIAS_STANDBY)
3892 snd_soc_dapm_set_bias_level(&card->dapm,
3893 SND_SOC_BIAS_OFF);
51737470
MB		 3894}
3895
2b97eabc 3896/* Module information */
d331124d 3897MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
2b97eabc
RP		 3898MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
3899MODULE_LICENSE("GPL");
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