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Linux 3.12-rc7
[deliverable/linux.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
MB		 61 [snd_soc_dapm_pre] = 0,
62 [snd_soc_dapm_supply] = 1,
62ea874a 63 [snd_soc_dapm_regulator_supply] = 1,
d7e7eb91 64 [snd_soc_dapm_clock_supply] = 1,
38357ab2 65 [snd_soc_dapm_micbias] = 2,
c74184ed 66 [snd_soc_dapm_dai_link] = 2,
4616274d
MB		 67 [snd_soc_dapm_dai_in] = 3,
68 [snd_soc_dapm_dai_out] = 3,
010ff262
MB		 69 [snd_soc_dapm_aif_in] = 3,
70 [snd_soc_dapm_aif_out] = 3,
71 [snd_soc_dapm_mic] = 4,
72 [snd_soc_dapm_mux] = 5,
24ff33ac 73 [snd_soc_dapm_virt_mux] = 5,
010ff262
MB		 74 [snd_soc_dapm_value_mux] = 5,
75 [snd_soc_dapm_dac] = 6,
efc77e36 76 [snd_soc_dapm_switch] = 7,
010ff262
MB		 77 [snd_soc_dapm_mixer] = 7,
78 [snd_soc_dapm_mixer_named_ctl] = 7,
79 [snd_soc_dapm_pga] = 8,
80 [snd_soc_dapm_adc] = 9,
d88429a6 81 [snd_soc_dapm_out_drv] = 10,
010ff262
MB		 82 [snd_soc_dapm_hp] = 10,
83 [snd_soc_dapm_spk] = 10,
7e1f7c8a 84 [snd_soc_dapm_line] = 10,
57295073
LPC		 85 [snd_soc_dapm_kcontrol] = 11,
86 [snd_soc_dapm_post] = 12,
2b97eabc 87};
ca9c1aae 88
2b97eabc 89static int dapm_down_seq[] = {
38357ab2 90 [snd_soc_dapm_pre] = 0,
57295073
LPC		 91 [snd_soc_dapm_kcontrol] = 1,
92 [snd_soc_dapm_adc] = 2,
93 [snd_soc_dapm_hp] = 3,
94 [snd_soc_dapm_spk] = 3,
95 [snd_soc_dapm_line] = 3,
96 [snd_soc_dapm_out_drv] = 3,
38357ab2 97 [snd_soc_dapm_pga] = 4,
efc77e36 98 [snd_soc_dapm_switch] = 5,
38357ab2 99 [snd_soc_dapm_mixer_named_ctl] = 5,
e3d4dabd
MB		 100 [snd_soc_dapm_mixer] = 5,
101 [snd_soc_dapm_dac] = 6,
102 [snd_soc_dapm_mic] = 7,
103 [snd_soc_dapm_micbias] = 8,
104 [snd_soc_dapm_mux] = 9,
24ff33ac 105 [snd_soc_dapm_virt_mux] = 9,
e3d4dabd 106 [snd_soc_dapm_value_mux] = 9,
010ff262
MB		 107 [snd_soc_dapm_aif_in] = 10,
108 [snd_soc_dapm_aif_out] = 10,
4616274d
MB		 109 [snd_soc_dapm_dai_in] = 10,
110 [snd_soc_dapm_dai_out] = 10,
c74184ed 111 [snd_soc_dapm_dai_link] = 11,
d7e7eb91 112 [snd_soc_dapm_clock_supply] = 12,
c74184ed
MB		 113 [snd_soc_dapm_regulator_supply] = 12,
114 [snd_soc_dapm_supply] = 12,
115 [snd_soc_dapm_post] = 13,
2b97eabc
RP		 116};
117
12ef193d 118static void pop_wait(u32 pop_time)
15e4c72f
MB		 119{
120 if (pop_time)
121 schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time));
122}
123
fd8d3bc0 124static void pop_dbg(struct device *dev, u32 pop_time, const char *fmt, ...)
15e4c72f
MB		 125{
126 va_list args;
fd8d3bc0 127 char *buf;
15e4c72f 128
fd8d3bc0
JN		 129 if (!pop_time)
130 return;
15e4c72f 131
fd8d3bc0
JN		 132 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
133 if (buf == NULL)
134 return;
15e4c72f 135
fd8d3bc0
JN		 136 va_start(args, fmt);
137 vsnprintf(buf, PAGE_SIZE, fmt, args);
9d01df06 138 dev_info(dev, "%s", buf);
15e4c72f 139 va_end(args);
fd8d3bc0
JN		 140
141 kfree(buf);
15e4c72f
MB		 142}
143
db432b41
MB		 144static bool dapm_dirty_widget(struct snd_soc_dapm_widget *w)
145{
146 return !list_empty(&w->dirty);
147}
148
25c77c5f 149void dapm_mark_dirty(struct snd_soc_dapm_widget *w, const char *reason)
db432b41 150{
75c1f891
MB		 151 if (!dapm_dirty_widget(w)) {
152 dev_vdbg(w->dapm->dev, "Marking %s dirty due to %s\n",
153 w->name, reason);
db432b41 154 list_add_tail(&w->dirty, &w->dapm->card->dapm_dirty);
75c1f891 155 }
db432b41 156}
25c77c5f 157EXPORT_SYMBOL_GPL(dapm_mark_dirty);
db432b41 158
e2d32ff6
MB		 159void dapm_mark_io_dirty(struct snd_soc_dapm_context *dapm)
160{
161 struct snd_soc_card *card = dapm->card;
162 struct snd_soc_dapm_widget *w;
163
164 mutex_lock(&card->dapm_mutex);
165
166 list_for_each_entry(w, &card->widgets, list) {
167 switch (w->id) {
168 case snd_soc_dapm_input:
169 case snd_soc_dapm_output:
170 dapm_mark_dirty(w, "Rechecking inputs and outputs");
171 break;
172 default:
173 break;
174 }
175 }
176
177 mutex_unlock(&card->dapm_mutex);
178}
179EXPORT_SYMBOL_GPL(dapm_mark_io_dirty);
180
2b97eabc 181/* create a new dapm widget */
88cb4290 182static inline struct snd_soc_dapm_widget *dapm_cnew_widget(
2b97eabc
RP		 183 const struct snd_soc_dapm_widget *_widget)
184{
88cb4290 185 return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL);
2b97eabc
RP		 186}
187
e84357f7 188struct dapm_kcontrol_data {
cf7c1de2 189 unsigned int value;
57295073 190 struct snd_soc_dapm_widget *widget;
5106b92f 191 struct list_head paths;
2c75bdf3 192 struct snd_soc_dapm_widget_list *wlist;
e84357f7
LPC		 193};
194
195static int dapm_kcontrol_data_alloc(struct snd_soc_dapm_widget *widget,
196 struct snd_kcontrol *kcontrol)
197{
198 struct dapm_kcontrol_data *data;
57295073 199 struct soc_mixer_control *mc;
e84357f7 200
2c75bdf3 201 data = kzalloc(sizeof(*data), GFP_KERNEL);
e84357f7
LPC		 202 if (!data) {
203 dev_err(widget->dapm->dev,
204 "ASoC: can't allocate kcontrol data for %s\n",
205 widget->name);
206 return -ENOMEM;
207 }
208
5106b92f 209 INIT_LIST_HEAD(&data->paths);
e84357f7 210
57295073
LPC		 211 switch (widget->id) {
212 case snd_soc_dapm_switch:
213 case snd_soc_dapm_mixer:
214 case snd_soc_dapm_mixer_named_ctl:
215 mc = (struct soc_mixer_control *)kcontrol->private_value;
216
217 if (mc->autodisable) {
218 struct snd_soc_dapm_widget template;
219
220 memset(&template, 0, sizeof(template));
221 template.reg = mc->reg;
222 template.mask = (1 << fls(mc->max)) - 1;
223 template.shift = mc->shift;
224 if (mc->invert)
225 template.off_val = mc->max;
226 else
227 template.off_val = 0;
228 template.on_val = template.off_val;
229 template.id = snd_soc_dapm_kcontrol;
230 template.name = kcontrol->id.name;
231
2daabd78
LPC		 232 data->value = template.on_val;
233
57295073
LPC		 234 data->widget = snd_soc_dapm_new_control(widget->dapm,
235 &template);
236 if (!data->widget) {
237 kfree(data);
238 return -ENOMEM;
239 }
240 }
241 break;
242 default:
243 break;
244 }
245
e84357f7
LPC		 246 kcontrol->private_data = data;
247
248 return 0;
249}
250
251static void dapm_kcontrol_free(struct snd_kcontrol *kctl)
252{
253 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kctl);
57295073 254 kfree(data->widget);
2c75bdf3 255 kfree(data->wlist);
e84357f7
LPC		 256 kfree(data);
257}
258
259static struct snd_soc_dapm_widget_list *dapm_kcontrol_get_wlist(
260 const struct snd_kcontrol *kcontrol)
261{
262 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
263
2c75bdf3 264 return data->wlist;
e84357f7
LPC		 265}
266
267static int dapm_kcontrol_add_widget(struct snd_kcontrol *kcontrol,
268 struct snd_soc_dapm_widget *widget)
269{
270 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
2c75bdf3
LPC		 271 struct snd_soc_dapm_widget_list *new_wlist;
272 unsigned int n;
e84357f7 273
2c75bdf3
LPC		 274 if (data->wlist)
275 n = data->wlist->num_widgets + 1;
276 else
277 n = 1;
278
279 new_wlist = krealloc(data->wlist,
280 sizeof(*new_wlist) + sizeof(widget) * n, GFP_KERNEL);
281 if (!new_wlist)
e84357f7
LPC		 282 return -ENOMEM;
283
2c75bdf3
LPC		 284 new_wlist->widgets[n - 1] = widget;
285 new_wlist->num_widgets = n;
e84357f7 286
2c75bdf3 287 data->wlist = new_wlist;
e84357f7
LPC		 288
289 return 0;
290}
291
5106b92f
LPC		 292static void dapm_kcontrol_add_path(const struct snd_kcontrol *kcontrol,
293 struct snd_soc_dapm_path *path)
294{
295 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
296
297 list_add_tail(&path->list_kcontrol, &data->paths);
57295073
LPC		 298
299 if (data->widget) {
300 snd_soc_dapm_add_path(data->widget->dapm, data->widget,
301 path->source, NULL, NULL);
302 }
303}
304
305static bool dapm_kcontrol_is_powered(const struct snd_kcontrol *kcontrol)
306{
307 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
308
309 if (!data->widget)
310 return true;
311
312 return data->widget->power;
5106b92f
LPC		 313}
314
315static struct list_head *dapm_kcontrol_get_path_list(
316 const struct snd_kcontrol *kcontrol)
317{
318 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
319
320 return &data->paths;
321}
322
323#define dapm_kcontrol_for_each_path(path, kcontrol) \
324 list_for_each_entry(path, dapm_kcontrol_get_path_list(kcontrol), \
325 list_kcontrol)
326
cf7c1de2
LPC		 327static unsigned int dapm_kcontrol_get_value(const struct snd_kcontrol *kcontrol)
328{
329 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
330
331 return data->value;
332}
333
334static bool dapm_kcontrol_set_value(const struct snd_kcontrol *kcontrol,
335 unsigned int value)
336{
337 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
338
339 if (data->value == value)
340 return false;
341
57295073
LPC		 342 if (data->widget)
343 data->widget->on_val = value;
344
cf7c1de2
LPC		 345 data->value = value;
346
347 return true;
348}
349
eee5d7f9
LPC		 350/**
351 * snd_soc_dapm_kcontrol_codec() - Returns the codec associated to a kcontrol
352 * @kcontrol: The kcontrol
353 */
354struct snd_soc_codec *snd_soc_dapm_kcontrol_codec(struct snd_kcontrol *kcontrol)
355{
e84357f7 356 return dapm_kcontrol_get_wlist(kcontrol)->widgets[0]->codec;
eee5d7f9
LPC		 357}
358EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_codec);
359
6c120e19
LG		 360static void dapm_reset(struct snd_soc_card *card)
361{
362 struct snd_soc_dapm_widget *w;
363
364 memset(&card->dapm_stats, 0, sizeof(card->dapm_stats));
365
366 list_for_each_entry(w, &card->widgets, list) {
39eb5fd1 367 w->new_power = w->power;
6c120e19
LG		 368 w->power_checked = false;
369 w->inputs = -1;
370 w->outputs = -1;
371 }
372}
373
0445bdf4
LG		 374static int soc_widget_read(struct snd_soc_dapm_widget *w, int reg)
375{
376 if (w->codec)
377 return snd_soc_read(w->codec, reg);
b7950641
LG		 378 else if (w->platform)
379 return snd_soc_platform_read(w->platform, reg);
380
30a6a1a4 381 dev_err(w->dapm->dev, "ASoC: no valid widget read method\n");
b7950641 382 return -1;
0445bdf4
LG		 383}
384
385static int soc_widget_write(struct snd_soc_dapm_widget *w, int reg, int val)
386{
387 if (w->codec)
388 return snd_soc_write(w->codec, reg, val);
b7950641
LG		 389 else if (w->platform)
390 return snd_soc_platform_write(w->platform, reg, val);
391
30a6a1a4 392 dev_err(w->dapm->dev, "ASoC: no valid widget write method\n");
b7950641 393 return -1;
0445bdf4
LG		 394}
395
49575fb5
LG		 396static inline void soc_widget_lock(struct snd_soc_dapm_widget *w)
397{
e06ab3b8 398 if (w->codec && !w->codec->using_regmap)
49575fb5
LG		 399 mutex_lock(&w->codec->mutex);
400 else if (w->platform)
401 mutex_lock(&w->platform->mutex);
402}
403
404static inline void soc_widget_unlock(struct snd_soc_dapm_widget *w)
405{
e06ab3b8 406 if (w->codec && !w->codec->using_regmap)
49575fb5
LG		 407 mutex_unlock(&w->codec->mutex);
408 else if (w->platform)
409 mutex_unlock(&w->platform->mutex);
410}
411
412static int soc_widget_update_bits_locked(struct snd_soc_dapm_widget *w,
0445bdf4
LG		 413 unsigned short reg, unsigned int mask, unsigned int value)
414{
8a713da8 415 bool change;
0445bdf4
LG		 416 unsigned int old, new;
417 int ret;
418
8a713da8
MB		 419 if (w->codec && w->codec->using_regmap) {
420 ret = regmap_update_bits_check(w->codec->control_data,
421 reg, mask, value, &change);
422 if (ret != 0)
423 return ret;
424 } else {
49575fb5 425 soc_widget_lock(w);
8a713da8 426 ret = soc_widget_read(w, reg);
49575fb5
LG		 427 if (ret < 0) {
428 soc_widget_unlock(w);
0445bdf4 429 return ret;
49575fb5 430 }
8a713da8
MB		 431
432 old = ret;
433 new = (old & ~mask) | (value & mask);
434 change = old != new;
435 if (change) {
436 ret = soc_widget_write(w, reg, new);
49575fb5
LG		 437 if (ret < 0) {
438 soc_widget_unlock(w);
8a713da8 439 return ret;
49575fb5 440 }
8a713da8 441 }
49575fb5 442 soc_widget_unlock(w);
0445bdf4
LG		 443 }
444
445 return change;
446}
447
452c5eaa
MB		 448/**
449 * snd_soc_dapm_set_bias_level - set the bias level for the system
ed5a4c47 450 * @dapm: DAPM context
452c5eaa
MB		 451 * @level: level to configure
452 *
453 * Configure the bias (power) levels for the SoC audio device.
454 *
455 * Returns 0 for success else error.
456 */
ed5a4c47 457static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm,
ce6120cc 458 enum snd_soc_bias_level level)
452c5eaa 459{
ed5a4c47 460 struct snd_soc_card *card = dapm->card;
452c5eaa
MB		 461 int ret = 0;
462
84e90930
MB		 463 trace_snd_soc_bias_level_start(card, level);
464
f0fba2ad 465 if (card && card->set_bias_level)
d4c6005f 466 ret = card->set_bias_level(card, dapm, level);
171ec6b0
MB		 467 if (ret != 0)
468 goto out;
469
cc4c670a
MB		 470 if (dapm->codec) {
471 if (dapm->codec->driver->set_bias_level)
472 ret = dapm->codec->driver->set_bias_level(dapm->codec,
473 level);
d8c3bb91
MB		 474 else
475 dapm->bias_level = level;
4e872a46 476 } else if (!card || dapm != &card->dapm) {
4123128e 477 dapm->bias_level = level;
4e872a46 478 }
4123128e 479
171ec6b0
MB		 480 if (ret != 0)
481 goto out;
482
483 if (card && card->set_bias_level_post)
d4c6005f 484 ret = card->set_bias_level_post(card, dapm, level);
171ec6b0 485out:
84e90930
MB		 486 trace_snd_soc_bias_level_done(card, level);
487
452c5eaa
MB		 488 return ret;
489}
490
2b97eabc
RP		 491/* set up initial codec paths */
492static void dapm_set_path_status(struct snd_soc_dapm_widget *w,
493 struct snd_soc_dapm_path *p, int i)
494{
495 switch (w->id) {
496 case snd_soc_dapm_switch:
ca9c1aae
IM		 497 case snd_soc_dapm_mixer:
498 case snd_soc_dapm_mixer_named_ctl: {
2b97eabc 499 int val;
4eaa9819 500 struct soc_mixer_control *mc = (struct soc_mixer_control *)
82cfecdc 501 w->kcontrol_news[i].private_value;
815ecf8d
JS		 502 unsigned int reg = mc->reg;
503 unsigned int shift = mc->shift;
4eaa9819 504 int max = mc->max;
815ecf8d
JS		 505 unsigned int mask = (1 << fls(max)) - 1;
506 unsigned int invert = mc->invert;
2b97eabc 507
0445bdf4 508 val = soc_widget_read(w, reg);
2b97eabc 509 val = (val >> shift) & mask;
32fee7af
BT		 510 if (invert)
511 val = max - val;
2b97eabc 512
32fee7af 513 p->connect = !!val;
2b97eabc
RP		 514 }
515 break;
516 case snd_soc_dapm_mux: {
82cfecdc
SW		 517 struct soc_enum *e = (struct soc_enum *)
518 w->kcontrol_news[i].private_value;
86767b7d 519 int val, item;
2b97eabc 520
0445bdf4 521 val = soc_widget_read(w, e->reg);
86767b7d 522 item = (val >> e->shift_l) & e->mask;
2b97eabc 523
58fee775
LPC		 524 if (item < e->max && !strcmp(p->name, e->texts[item]))
525 p->connect = 1;
526 else
527 p->connect = 0;
2b97eabc
RP		 528 }
529 break;
24ff33ac 530 case snd_soc_dapm_virt_mux: {
82cfecdc
SW		 531 struct soc_enum *e = (struct soc_enum *)
532 w->kcontrol_news[i].private_value;
24ff33ac
DP		 533
534 p->connect = 0;
535 /* since a virtual mux has no backing registers to
536 * decide which path to connect, it will try to match
537 * with the first enumeration. This is to ensure
538 * that the default mux choice (the first) will be
539 * correctly powered up during initialization.
540 */
541 if (!strcmp(p->name, e->texts[0]))
542 p->connect = 1;
543 }
544 break;
2e72f8e3 545 case snd_soc_dapm_value_mux: {
74155556 546 struct soc_enum *e = (struct soc_enum *)
82cfecdc 547 w->kcontrol_news[i].private_value;
2e72f8e3
PU		 548 int val, item;
549
0445bdf4 550 val = soc_widget_read(w, e->reg);
2e72f8e3
PU		 551 val = (val >> e->shift_l) & e->mask;
552 for (item = 0; item < e->max; item++) {
553 if (val == e->values[item])
554 break;
555 }
556
58fee775
LPC		 557 if (item < e->max && !strcmp(p->name, e->texts[item]))
558 p->connect = 1;
559 else
560 p->connect = 0;
2e72f8e3
PU		 561 }
562 break;
56563100 563 /* does not affect routing - always connected */
2b97eabc 564 case snd_soc_dapm_pga:
d88429a6 565 case snd_soc_dapm_out_drv:
2b97eabc
RP		 566 case snd_soc_dapm_output:
567 case snd_soc_dapm_adc:
568 case snd_soc_dapm_input:
1ab97c8c 569 case snd_soc_dapm_siggen:
2b97eabc
RP		 570 case snd_soc_dapm_dac:
571 case snd_soc_dapm_micbias:
572 case snd_soc_dapm_vmid:
246d0a17 573 case snd_soc_dapm_supply:
62ea874a 574 case snd_soc_dapm_regulator_supply:
d7e7eb91 575 case snd_soc_dapm_clock_supply:
010ff262
MB		 576 case snd_soc_dapm_aif_in:
577 case snd_soc_dapm_aif_out:
4616274d
MB		 578 case snd_soc_dapm_dai_in:
579 case snd_soc_dapm_dai_out:
2b97eabc
RP		 580 case snd_soc_dapm_hp:
581 case snd_soc_dapm_mic:
582 case snd_soc_dapm_spk:
583 case snd_soc_dapm_line:
c74184ed 584 case snd_soc_dapm_dai_link:
57295073 585 case snd_soc_dapm_kcontrol:
56563100
MB		 586 p->connect = 1;
587 break;
588 /* does affect routing - dynamically connected */
2b97eabc
RP		 589 case snd_soc_dapm_pre:
590 case snd_soc_dapm_post:
591 p->connect = 0;
592 break;
593 }
594}
595
74b8f955 596/* connect mux widget to its interconnecting audio paths */
ce6120cc 597static int dapm_connect_mux(struct snd_soc_dapm_context *dapm,
2b97eabc
RP		 598 struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest,
599 struct snd_soc_dapm_path *path, const char *control_name,
600 const struct snd_kcontrol_new *kcontrol)
601{
602 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
603 int i;
604
f8ba0b7b 605 for (i = 0; i < e->max; i++) {
2b97eabc 606 if (!(strcmp(control_name, e->texts[i]))) {
8ddab3f5 607 list_add(&path->list, &dapm->card->paths);
2b97eabc
RP		 608 list_add(&path->list_sink, &dest->sources);
609 list_add(&path->list_source, &src->sinks);
610 path->name = (char*)e->texts[i];
611 dapm_set_path_status(dest, path, 0);
612 return 0;
613 }
614 }
615
616 return -ENODEV;
617}
618
74b8f955 619/* connect mixer widget to its interconnecting audio paths */
ce6120cc 620static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm,
2b97eabc
RP		 621 struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest,
622 struct snd_soc_dapm_path *path, const char *control_name)
623{
624 int i;
625
626 /* search for mixer kcontrol */
627 for (i = 0; i < dest->num_kcontrols; i++) {
82cfecdc 628 if (!strcmp(control_name, dest->kcontrol_news[i].name)) {
8ddab3f5 629 list_add(&path->list, &dapm->card->paths);
2b97eabc
RP		 630 list_add(&path->list_sink, &dest->sources);
631 list_add(&path->list_source, &src->sinks);
82cfecdc 632 path->name = dest->kcontrol_news[i].name;
2b97eabc
RP		 633 dapm_set_path_status(dest, path, i);
634 return 0;
635 }
636 }
637 return -ENODEV;
638}
639
af46800b 640static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context *dapm,
1007da06 641 struct snd_soc_dapm_widget *kcontrolw,
af46800b
SW		 642 const struct snd_kcontrol_new *kcontrol_new,
643 struct snd_kcontrol **kcontrol)
644{
645 struct snd_soc_dapm_widget *w;
646 int i;
647
648 *kcontrol = NULL;
649
650 list_for_each_entry(w, &dapm->card->widgets, list) {
1007da06
SW		 651 if (w == kcontrolw || w->dapm != kcontrolw->dapm)
652 continue;
af46800b
SW		 653 for (i = 0; i < w->num_kcontrols; i++) {
654 if (&w->kcontrol_news[i] == kcontrol_new) {
655 if (w->kcontrols)
656 *kcontrol = w->kcontrols[i];
657 return 1;
658 }
659 }
660 }
661
662 return 0;
663}
664
85762e71
SW		 665/*
666 * Determine if a kcontrol is shared. If it is, look it up. If it isn't,
667 * create it. Either way, add the widget into the control's widget list
668 */
669static int dapm_create_or_share_mixmux_kcontrol(struct snd_soc_dapm_widget *w,
946d92a1 670 int kci)
2b97eabc 671{
4b80b8c2 672 struct snd_soc_dapm_context *dapm = w->dapm;
12ea2c78 673 struct snd_card *card = dapm->card->snd_card;
efb7ac3f 674 const char *prefix;
85762e71
SW		 675 size_t prefix_len;
676 int shared;
677 struct snd_kcontrol *kcontrol;
85762e71 678 bool wname_in_long_name, kcname_in_long_name;
85762e71
SW		 679 char *long_name;
680 const char *name;
681 int ret;
efb7ac3f
MB		 682
683 if (dapm->codec)
684 prefix = dapm->codec->name_prefix;
685 else
686 prefix = NULL;
2b97eabc 687
3e5ff4df
MB		 688 if (prefix)
689 prefix_len = strlen(prefix) + 1;
690 else
691 prefix_len = 0;
692
85762e71
SW		 693 shared = dapm_is_shared_kcontrol(dapm, w, &w->kcontrol_news[kci],
694 &kcontrol);
2b97eabc 695
85762e71
SW		 696 if (!kcontrol) {
697 if (shared) {
698 wname_in_long_name = false;
699 kcname_in_long_name = true;
700 } else {
701 switch (w->id) {
702 case snd_soc_dapm_switch:
703 case snd_soc_dapm_mixer:
704 wname_in_long_name = true;
705 kcname_in_long_name = true;
706 break;
707 case snd_soc_dapm_mixer_named_ctl:
708 wname_in_long_name = false;
709 kcname_in_long_name = true;
710 break;
711 case snd_soc_dapm_mux:
712 case snd_soc_dapm_virt_mux:
713 case snd_soc_dapm_value_mux:
714 wname_in_long_name = true;
715 kcname_in_long_name = false;
716 break;
717 default:
85762e71 718 return -EINVAL;
82cd8764 719 }
85762e71
SW		 720 }
721
722 if (wname_in_long_name && kcname_in_long_name) {
85762e71
SW		 723 /*
724 * The control will get a prefix from the control
725 * creation process but we're also using the same
726 * prefix for widgets so cut the prefix off the
727 * front of the widget name.
ca9c1aae 728 */
2b581074 729 long_name = kasprintf(GFP_KERNEL, "%s %s",
85762e71
SW		 730 w->name + prefix_len,
731 w->kcontrol_news[kci].name);
e84357f7 732 if (long_name == NULL)
2b581074 733 return -ENOMEM;
85762e71
SW		 734
735 name = long_name;
736 } else if (wname_in_long_name) {
737 long_name = NULL;
738 name = w->name + prefix_len;
739 } else {
740 long_name = NULL;
741 name = w->kcontrol_news[kci].name;
742 }
ca9c1aae 743
e84357f7 744 kcontrol = snd_soc_cnew(&w->kcontrol_news[kci], NULL, name,
85762e71 745 prefix);
656ca9d3 746 kfree(long_name);
9356e9d5
LPC		 747 if (!kcontrol)
748 return -ENOMEM;
749 kcontrol->private_free = dapm_kcontrol_free;
e84357f7
LPC		 750
751 ret = dapm_kcontrol_data_alloc(w, kcontrol);
752 if (ret) {
753 snd_ctl_free_one(kcontrol);
754 return ret;
755 }
756
85762e71
SW		 757 ret = snd_ctl_add(card, kcontrol);
758 if (ret < 0) {
759 dev_err(dapm->dev,
760 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
761 w->name, name, ret);
85762e71
SW		 762 return ret;
763 }
85762e71 764 }
2b97eabc 765
2c75bdf3
LPC		 766 ret = dapm_kcontrol_add_widget(kcontrol, w);
767 if (ret)
768 return ret;
769
85762e71 770 w->kcontrols[kci] = kcontrol;
ca9c1aae 771
85762e71
SW		 772 return 0;
773}
219b93f5 774
85762e71
SW		 775/* create new dapm mixer control */
776static int dapm_new_mixer(struct snd_soc_dapm_widget *w)
777{
778 int i, ret;
779 struct snd_soc_dapm_path *path;
780
781 /* add kcontrol */
782 for (i = 0; i < w->num_kcontrols; i++) {
783 /* match name */
784 list_for_each_entry(path, &w->sources, list_sink) {
785 /* mixer/mux paths name must match control name */
786 if (path->name != (char *)w->kcontrol_news[i].name)
787 continue;
788
789 if (w->kcontrols[i]) {
5106b92f 790 dapm_kcontrol_add_path(w->kcontrols[i], path);
85762e71 791 continue;
2b97eabc 792 }
85762e71 793
946d92a1 794 ret = dapm_create_or_share_mixmux_kcontrol(w, i);
85762e71
SW		 795 if (ret < 0)
796 return ret;
946d92a1
MB		 797
798 dapm_kcontrol_add_path(w->kcontrols[i], path);
2b97eabc
RP		 799 }
800 }
85762e71
SW		 801
802 return 0;
2b97eabc
RP		 803}
804
805/* create new dapm mux control */
4b80b8c2 806static int dapm_new_mux(struct snd_soc_dapm_widget *w)
2b97eabc 807{
4b80b8c2 808 struct snd_soc_dapm_context *dapm = w->dapm;
85762e71 809 struct snd_soc_dapm_path *path;
af46800b 810 int ret;
2b97eabc 811
af46800b
SW		 812 if (w->num_kcontrols != 1) {
813 dev_err(dapm->dev,
30a6a1a4 814 "ASoC: mux %s has incorrect number of controls\n",
af46800b 815 w->name);
2b97eabc
RP		 816 return -EINVAL;
817 }
818
fe581391 819 if (list_empty(&w->sources)) {
85762e71
SW		 820 dev_err(dapm->dev, "ASoC: mux %s has no paths\n", w->name);
821 return -EINVAL;
af46800b 822 }
ce6120cc 823
946d92a1 824 ret = dapm_create_or_share_mixmux_kcontrol(w, 0);
85762e71
SW		 825 if (ret < 0)
826 return ret;
fad59888 827
2b97eabc 828 list_for_each_entry(path, &w->sources, list_sink)
5106b92f 829 dapm_kcontrol_add_path(w->kcontrols[0], path);
2b97eabc 830
af46800b 831 return 0;
2b97eabc
RP		 832}
833
834/* create new dapm volume control */
4b80b8c2 835static int dapm_new_pga(struct snd_soc_dapm_widget *w)
2b97eabc 836{
a6c65736 837 if (w->num_kcontrols)
f7d41ae8 838 dev_err(w->dapm->dev,
30a6a1a4 839 "ASoC: PGA controls not supported: '%s'\n", w->name);
2b97eabc 840
a6c65736 841 return 0;
2b97eabc
RP		 842}
843
844/* reset 'walked' bit for each dapm path */
1059ecfa
RT		 845static void dapm_clear_walk_output(struct snd_soc_dapm_context *dapm,
846 struct list_head *sink)
2b97eabc
RP		 847{
848 struct snd_soc_dapm_path *p;
849
1059ecfa
RT		 850 list_for_each_entry(p, sink, list_source) {
851 if (p->walked) {
852 p->walked = 0;
853 dapm_clear_walk_output(dapm, &p->sink->sinks);
854 }
855 }
2b97eabc
RP		 856}
857
1059ecfa
RT		 858static void dapm_clear_walk_input(struct snd_soc_dapm_context *dapm,
859 struct list_head *source)
2b97eabc
RP		 860{
861 struct snd_soc_dapm_path *p;
862
1059ecfa
RT		 863 list_for_each_entry(p, source, list_sink) {
864 if (p->walked) {
865 p->walked = 0;
866 dapm_clear_walk_input(dapm, &p->source->sources);
867 }
868 }
2b97eabc
RP		 869}
870
1059ecfa 871
9949788b
MB		 872/* We implement power down on suspend by checking the power state of
873 * the ALSA card - when we are suspending the ALSA state for the card
874 * is set to D3.
875 */
876static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget)
877{
12ea2c78 878 int level = snd_power_get_state(widget->dapm->card->snd_card);
9949788b 879
f0fba2ad 880 switch (level) {
9949788b
MB		 881 case SNDRV_CTL_POWER_D3hot:
882 case SNDRV_CTL_POWER_D3cold:
1547aba9 883 if (widget->ignore_suspend)
30a6a1a4 884 dev_dbg(widget->dapm->dev, "ASoC: %s ignoring suspend\n",
f7d41ae8 885 widget->name);
1547aba9 886 return widget->ignore_suspend;
9949788b
MB		 887 default:
888 return 1;
889 }
890}
891
ec2e3031
LG		 892/* add widget to list if it's not already in the list */
893static int dapm_list_add_widget(struct snd_soc_dapm_widget_list **list,
894 struct snd_soc_dapm_widget *w)
895{
896 struct snd_soc_dapm_widget_list *wlist;
897 int wlistsize, wlistentries, i;
898
899 if (*list == NULL)
900 return -EINVAL;
901
902 wlist = *list;
903
904 /* is this widget already in the list */
905 for (i = 0; i < wlist->num_widgets; i++) {
906 if (wlist->widgets[i] == w)
907 return 0;
908 }
909
910 /* allocate some new space */
911 wlistentries = wlist->num_widgets + 1;
912 wlistsize = sizeof(struct snd_soc_dapm_widget_list) +
913 wlistentries * sizeof(struct snd_soc_dapm_widget *);
914 *list = krealloc(wlist, wlistsize, GFP_KERNEL);
915 if (*list == NULL) {
30a6a1a4 916 dev_err(w->dapm->dev, "ASoC: can't allocate widget list for %s\n",
ec2e3031
LG		 917 w->name);
918 return -ENOMEM;
919 }
920 wlist = *list;
921
922 /* insert the widget */
30a6a1a4 923 dev_dbg(w->dapm->dev, "ASoC: added %s in widget list pos %d\n",
ec2e3031
LG		 924 w->name, wlist->num_widgets);
925
926 wlist->widgets[wlist->num_widgets] = w;
927 wlist->num_widgets++;
928 return 1;
929}
930
2b97eabc
RP		 931/*
932 * Recursively check for a completed path to an active or physically connected
933 * output widget. Returns number of complete paths.
934 */
ec2e3031
LG		 935static int is_connected_output_ep(struct snd_soc_dapm_widget *widget,
936 struct snd_soc_dapm_widget_list **list)
2b97eabc
RP		 937{
938 struct snd_soc_dapm_path *path;
939 int con = 0;
940
024dc078
MB		 941 if (widget->outputs >= 0)
942 return widget->outputs;
943
de02d078
MB		 944 DAPM_UPDATE_STAT(widget, path_checks);
945
62ea874a
MB		 946 switch (widget->id) {
947 case snd_soc_dapm_supply:
948 case snd_soc_dapm_regulator_supply:
d7e7eb91 949 case snd_soc_dapm_clock_supply:
57295073 950 case snd_soc_dapm_kcontrol:
246d0a17 951 return 0;
62ea874a
MB		 952 default:
953 break;
954 }
246d0a17 955
010ff262
MB		 956 switch (widget->id) {
957 case snd_soc_dapm_adc:
958 case snd_soc_dapm_aif_out:
4616274d 959 case snd_soc_dapm_dai_out:
024dc078
MB		 960 if (widget->active) {
961 widget->outputs = snd_soc_dapm_suspend_check(widget);
962 return widget->outputs;
963 }
010ff262
MB		 964 default:
965 break;
966 }
2b97eabc
RP		 967
968 if (widget->connected) {
969 /* connected pin ? */
024dc078
MB		 970 if (widget->id == snd_soc_dapm_output && !widget->ext) {
971 widget->outputs = snd_soc_dapm_suspend_check(widget);
972 return widget->outputs;
973 }
2b97eabc
RP		 974
975 /* connected jack or spk ? */
024dc078
MB		 976 if (widget->id == snd_soc_dapm_hp ||
977 widget->id == snd_soc_dapm_spk ||
978 (widget->id == snd_soc_dapm_line &&
979 !list_empty(&widget->sources))) {
980 widget->outputs = snd_soc_dapm_suspend_check(widget);
981 return widget->outputs;
982 }
2b97eabc
RP		 983 }
984
985 list_for_each_entry(path, &widget->sinks, list_source) {
e56235e0
MB		 986 DAPM_UPDATE_STAT(widget, neighbour_checks);
987
bf3a9e13
MB		 988 if (path->weak)
989 continue;
990
8af294b4
MB		 991 if (path->walking)
992 return 1;
993
2b97eabc
RP		 994 if (path->walked)
995 continue;
996
ec2e3031
LG		 997 trace_snd_soc_dapm_output_path(widget, path);
998
2b97eabc
RP		 999 if (path->sink && path->connect) {
1000 path->walked = 1;
8af294b4 1001 path->walking = 1;
ec2e3031
LG		 1002
1003 /* do we need to add this widget to the list ? */
1004 if (list) {
1005 int err;
1006 err = dapm_list_add_widget(list, path->sink);
1007 if (err < 0) {
30a6a1a4
LG		 1008 dev_err(widget->dapm->dev,
1009 "ASoC: could not add widget %s\n",
ec2e3031 1010 widget->name);
8af294b4 1011 path->walking = 0;
ec2e3031
LG		 1012 return con;
1013 }
1014 }
1015
1016 con += is_connected_output_ep(path->sink, list);
8af294b4
MB		 1017
1018 path->walking = 0;
2b97eabc
RP		 1019 }
1020 }
1021
024dc078
MB		 1022 widget->outputs = con;
1023
2b97eabc
RP		 1024 return con;
1025}
1026
1027/*
1028 * Recursively check for a completed path to an active or physically connected
1029 * input widget. Returns number of complete paths.
1030 */
ec2e3031
LG		 1031static int is_connected_input_ep(struct snd_soc_dapm_widget *widget,
1032 struct snd_soc_dapm_widget_list **list)
2b97eabc
RP		 1033{
1034 struct snd_soc_dapm_path *path;
1035 int con = 0;
1036
024dc078
MB		 1037 if (widget->inputs >= 0)
1038 return widget->inputs;
1039
de02d078
MB		 1040 DAPM_UPDATE_STAT(widget, path_checks);
1041
62ea874a
MB		 1042 switch (widget->id) {
1043 case snd_soc_dapm_supply:
1044 case snd_soc_dapm_regulator_supply:
d7e7eb91 1045 case snd_soc_dapm_clock_supply:
57295073 1046 case snd_soc_dapm_kcontrol:
246d0a17 1047 return 0;
62ea874a
MB		 1048 default:
1049 break;
1050 }
246d0a17 1051
2b97eabc 1052 /* active stream ? */
010ff262
MB		 1053 switch (widget->id) {
1054 case snd_soc_dapm_dac:
1055 case snd_soc_dapm_aif_in:
4616274d 1056 case snd_soc_dapm_dai_in:
024dc078
MB		 1057 if (widget->active) {
1058 widget->inputs = snd_soc_dapm_suspend_check(widget);
1059 return widget->inputs;
1060 }
010ff262
MB		 1061 default:
1062 break;
1063 }
2b97eabc
RP		 1064
1065 if (widget->connected) {
1066 /* connected pin ? */
024dc078
MB		 1067 if (widget->id == snd_soc_dapm_input && !widget->ext) {
1068 widget->inputs = snd_soc_dapm_suspend_check(widget);
1069 return widget->inputs;
1070 }
2b97eabc
RP		 1071
1072 /* connected VMID/Bias for lower pops */
024dc078
MB		 1073 if (widget->id == snd_soc_dapm_vmid) {
1074 widget->inputs = snd_soc_dapm_suspend_check(widget);
1075 return widget->inputs;
1076 }
2b97eabc
RP		 1077
1078 /* connected jack ? */
eaeae5d9 1079 if (widget->id == snd_soc_dapm_mic ||
024dc078
MB		 1080 (widget->id == snd_soc_dapm_line &&
1081 !list_empty(&widget->sinks))) {
1082 widget->inputs = snd_soc_dapm_suspend_check(widget);
1083 return widget->inputs;
1084 }
1085
1ab97c8c
MB		 1086 /* signal generator */
1087 if (widget->id == snd_soc_dapm_siggen) {
1088 widget->inputs = snd_soc_dapm_suspend_check(widget);
1089 return widget->inputs;
1090 }
2b97eabc
RP		 1091 }
1092
1093 list_for_each_entry(path, &widget->sources, list_sink) {
e56235e0
MB		 1094 DAPM_UPDATE_STAT(widget, neighbour_checks);
1095
bf3a9e13
MB		 1096 if (path->weak)
1097 continue;
1098
8af294b4
MB		 1099 if (path->walking)
1100 return 1;
1101
2b97eabc
RP		 1102 if (path->walked)
1103 continue;
1104
ec2e3031
LG		 1105 trace_snd_soc_dapm_input_path(widget, path);
1106
2b97eabc
RP		 1107 if (path->source && path->connect) {
1108 path->walked = 1;
8af294b4 1109 path->walking = 1;
ec2e3031
LG		 1110
1111 /* do we need to add this widget to the list ? */
1112 if (list) {
1113 int err;
90c6ce0d 1114 err = dapm_list_add_widget(list, path->source);
ec2e3031 1115 if (err < 0) {
30a6a1a4
LG		 1116 dev_err(widget->dapm->dev,
1117 "ASoC: could not add widget %s\n",
ec2e3031 1118 widget->name);
8af294b4 1119 path->walking = 0;
ec2e3031
LG		 1120 return con;
1121 }
1122 }
1123
1124 con += is_connected_input_ep(path->source, list);
8af294b4
MB		 1125
1126 path->walking = 0;
2b97eabc
RP		 1127 }
1128 }
1129
024dc078
MB		 1130 widget->inputs = con;
1131
2b97eabc
RP		 1132 return con;
1133}
1134
ec2e3031
LG		 1135/**
1136 * snd_soc_dapm_get_connected_widgets - query audio path and it's widgets.
1137 * @dai: the soc DAI.
1138 * @stream: stream direction.
1139 * @list: list of active widgets for this stream.
1140 *
1141 * Queries DAPM graph as to whether an valid audio stream path exists for
1142 * the initial stream specified by name. This takes into account
1143 * current mixer and mux kcontrol settings. Creates list of valid widgets.
1144 *
1145 * Returns the number of valid paths or negative error.
1146 */
1147int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai *dai, int stream,
1148 struct snd_soc_dapm_widget_list **list)
1149{
1150 struct snd_soc_card *card = dai->card;
1151 int paths;
1152
1153 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
1154 dapm_reset(card);
1155
1059ecfa 1156 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
ec2e3031 1157 paths = is_connected_output_ep(dai->playback_widget, list);
1059ecfa
RT		 1158 dapm_clear_walk_output(&card->dapm,
1159 &dai->playback_widget->sinks);
1160 } else {
d298caae 1161 paths = is_connected_input_ep(dai->capture_widget, list);
1059ecfa
RT		 1162 dapm_clear_walk_input(&card->dapm,
1163 &dai->capture_widget->sources);
1164 }
ec2e3031
LG		 1165
1166 trace_snd_soc_dapm_connected(paths, stream);
ec2e3031
LG		 1167 mutex_unlock(&card->dapm_mutex);
1168
1169 return paths;
1170}
1171
e2be2ccf
JN		 1172/*
1173 * Handler for generic register modifier widget.
1174 */
1175int dapm_reg_event(struct snd_soc_dapm_widget *w,
1176 struct snd_kcontrol *kcontrol, int event)
1177{
1178 unsigned int val;
1179
1180 if (SND_SOC_DAPM_EVENT_ON(event))
1181 val = w->on_val;
1182 else
1183 val = w->off_val;
1184
49575fb5 1185 soc_widget_update_bits_locked(w, -(w->reg + 1),
e2be2ccf
JN		 1186 w->mask << w->shift, val << w->shift);
1187
1188 return 0;
1189}
11589418 1190EXPORT_SYMBOL_GPL(dapm_reg_event);
e2be2ccf 1191
62ea874a
MB		 1192/*
1193 * Handler for regulator supply widget.
1194 */
1195int dapm_regulator_event(struct snd_soc_dapm_widget *w,
1196 struct snd_kcontrol *kcontrol, int event)
1197{
c05b84d1
MB		 1198 int ret;
1199
1200 if (SND_SOC_DAPM_EVENT_ON(event)) {
de9ba98b 1201 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
8784c77a 1202 ret = regulator_allow_bypass(w->regulator, false);
c05b84d1
MB		 1203 if (ret != 0)
1204 dev_warn(w->dapm->dev,
30a6a1a4 1205 "ASoC: Failed to bypass %s: %d\n",
c05b84d1
MB		 1206 w->name, ret);
1207 }
1208
a3cc056b 1209 return regulator_enable(w->regulator);
c05b84d1 1210 } else {
de9ba98b 1211 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
8784c77a 1212 ret = regulator_allow_bypass(w->regulator, true);
c05b84d1
MB		 1213 if (ret != 0)
1214 dev_warn(w->dapm->dev,
30a6a1a4 1215 "ASoC: Failed to unbypass %s: %d\n",
c05b84d1
MB		 1216 w->name, ret);
1217 }
1218
a3cc056b 1219 return regulator_disable_deferred(w->regulator, w->shift);
c05b84d1 1220 }
62ea874a
MB		 1221}
1222EXPORT_SYMBOL_GPL(dapm_regulator_event);
1223
d7e7eb91
OL		 1224/*
1225 * Handler for clock supply widget.
1226 */
1227int dapm_clock_event(struct snd_soc_dapm_widget *w,
1228 struct snd_kcontrol *kcontrol, int event)
1229{
1230 if (!w->clk)
1231 return -EIO;
1232
ec02995a 1233#ifdef CONFIG_HAVE_CLK
d7e7eb91 1234 if (SND_SOC_DAPM_EVENT_ON(event)) {
37c1b927 1235 return clk_prepare_enable(w->clk);
d7e7eb91 1236 } else {
37c1b927 1237 clk_disable_unprepare(w->clk);
d7e7eb91
OL		 1238 return 0;
1239 }
ec02995a 1240#endif
98b3cf12 1241 return 0;
d7e7eb91
OL		 1242}
1243EXPORT_SYMBOL_GPL(dapm_clock_event);
1244
d805002b
MB		 1245static int dapm_widget_power_check(struct snd_soc_dapm_widget *w)
1246{
9b8a83b2
MB		 1247 if (w->power_checked)
1248 return w->new_power;
1249
d805002b 1250 if (w->force)
9b8a83b2 1251 w->new_power = 1;
d805002b 1252 else
9b8a83b2
MB		 1253 w->new_power = w->power_check(w);
1254
1255 w->power_checked = true;
1256
1257 return w->new_power;
d805002b
MB		 1258}
1259
cd0f2d47
MB		 1260/* Generic check to see if a widget should be powered.
1261 */
1262static int dapm_generic_check_power(struct snd_soc_dapm_widget *w)
1263{
1264 int in, out;
1265
de02d078
MB		 1266 DAPM_UPDATE_STAT(w, power_checks);
1267
ec2e3031 1268 in = is_connected_input_ep(w, NULL);
1059ecfa 1269 dapm_clear_walk_input(w->dapm, &w->sources);
ec2e3031 1270 out = is_connected_output_ep(w, NULL);
1059ecfa 1271 dapm_clear_walk_output(w->dapm, &w->sinks);
cd0f2d47
MB		 1272 return out != 0 && in != 0;
1273}
1274
6ea31b9f
MB		 1275/* Check to see if an ADC has power */
1276static int dapm_adc_check_power(struct snd_soc_dapm_widget *w)
1277{
1278 int in;
1279
de02d078
MB		 1280 DAPM_UPDATE_STAT(w, power_checks);
1281
6ea31b9f 1282 if (w->active) {
ec2e3031 1283 in = is_connected_input_ep(w, NULL);
1059ecfa 1284 dapm_clear_walk_input(w->dapm, &w->sources);
6ea31b9f
MB		 1285 return in != 0;
1286 } else {
1287 return dapm_generic_check_power(w);
1288 }
1289}
1290
1291/* Check to see if a DAC has power */
1292static int dapm_dac_check_power(struct snd_soc_dapm_widget *w)
1293{
1294 int out;
1295
de02d078
MB		 1296 DAPM_UPDATE_STAT(w, power_checks);
1297
6ea31b9f 1298 if (w->active) {
ec2e3031 1299 out = is_connected_output_ep(w, NULL);
1059ecfa 1300 dapm_clear_walk_output(w->dapm, &w->sinks);
6ea31b9f
MB		 1301 return out != 0;
1302 } else {
1303 return dapm_generic_check_power(w);
1304 }
1305}
1306
246d0a17
MB		 1307/* Check to see if a power supply is needed */
1308static int dapm_supply_check_power(struct snd_soc_dapm_widget *w)
1309{
1310 struct snd_soc_dapm_path *path;
246d0a17 1311
de02d078
MB		 1312 DAPM_UPDATE_STAT(w, power_checks);
1313
246d0a17
MB		 1314 /* Check if one of our outputs is connected */
1315 list_for_each_entry(path, &w->sinks, list_source) {
a8fdac83
MB		 1316 DAPM_UPDATE_STAT(w, neighbour_checks);
1317
bf3a9e13
MB		 1318 if (path->weak)
1319 continue;
1320
215edda3
MB		 1321 if (path->connected &&
1322 !path->connected(path->source, path->sink))
1323 continue;
1324
3017358a
MB		 1325 if (!path->sink)
1326 continue;
1327
f68d7e16
MB		 1328 if (dapm_widget_power_check(path->sink))
1329 return 1;
246d0a17
MB		 1330 }
1331
f68d7e16 1332 return 0;
246d0a17
MB		 1333}
1334
35c64bca
MB		 1335static int dapm_always_on_check_power(struct snd_soc_dapm_widget *w)
1336{
1337 return 1;
1338}
1339
38357ab2
MB		 1340static int dapm_seq_compare(struct snd_soc_dapm_widget *a,
1341 struct snd_soc_dapm_widget *b,
828a842f 1342 bool power_up)
42aa3418 1343{
828a842f
MB		 1344 int *sort;
1345
1346 if (power_up)
1347 sort = dapm_up_seq;
1348 else
1349 sort = dapm_down_seq;
1350
38357ab2
MB		 1351 if (sort[a->id] != sort[b->id])
1352 return sort[a->id] - sort[b->id];
20e4859d
MB		 1353 if (a->subseq != b->subseq) {
1354 if (power_up)
1355 return a->subseq - b->subseq;
1356 else
1357 return b->subseq - a->subseq;
1358 }
b22ead2a
MB		 1359 if (a->reg != b->reg)
1360 return a->reg - b->reg;
84dab567
MB		 1361 if (a->dapm != b->dapm)
1362 return (unsigned long)a->dapm - (unsigned long)b->dapm;
42aa3418 1363
38357ab2
MB		 1364 return 0;
1365}
42aa3418 1366
38357ab2
MB		 1367/* Insert a widget in order into a DAPM power sequence. */
1368static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget,
1369 struct list_head *list,
828a842f 1370 bool power_up)
38357ab2
MB		 1371{
1372 struct snd_soc_dapm_widget *w;
1373
1374 list_for_each_entry(w, list, power_list)
828a842f 1375 if (dapm_seq_compare(new_widget, w, power_up) < 0) {
38357ab2
MB		 1376 list_add_tail(&new_widget->power_list, &w->power_list);
1377 return;
1378 }
1379
1380 list_add_tail(&new_widget->power_list, list);
1381}
1382
95dd5cd6 1383static void dapm_seq_check_event(struct snd_soc_card *card,
68f89ad8
MB		 1384 struct snd_soc_dapm_widget *w, int event)
1385{
68f89ad8
MB		 1386 const char *ev_name;
1387 int power, ret;
1388
1389 switch (event) {
1390 case SND_SOC_DAPM_PRE_PMU:
1391 ev_name = "PRE_PMU";
1392 power = 1;
1393 break;
1394 case SND_SOC_DAPM_POST_PMU:
1395 ev_name = "POST_PMU";
1396 power = 1;
1397 break;
1398 case SND_SOC_DAPM_PRE_PMD:
1399 ev_name = "PRE_PMD";
1400 power = 0;
1401 break;
1402 case SND_SOC_DAPM_POST_PMD:
1403 ev_name = "POST_PMD";
1404 power = 0;
1405 break;
80114129
MB		 1406 case SND_SOC_DAPM_WILL_PMU:
1407 ev_name = "WILL_PMU";
1408 power = 1;
1409 break;
1410 case SND_SOC_DAPM_WILL_PMD:
1411 ev_name = "WILL_PMD";
1412 power = 0;
1413 break;
68f89ad8
MB		 1414 default:
1415 BUG();
1416 return;
1417 }
1418
39eb5fd1 1419 if (w->new_power != power)
68f89ad8
MB		 1420 return;
1421
1422 if (w->event && (w->event_flags & event)) {
95dd5cd6 1423 pop_dbg(w->dapm->dev, card->pop_time, "pop test : %s %s\n",
68f89ad8 1424 w->name, ev_name);
84e90930 1425 trace_snd_soc_dapm_widget_event_start(w, event);
68f89ad8 1426 ret = w->event(w, NULL, event);
84e90930 1427 trace_snd_soc_dapm_widget_event_done(w, event);
68f89ad8 1428 if (ret < 0)
95dd5cd6 1429 dev_err(w->dapm->dev, "ASoC: %s: %s event failed: %d\n",
68f89ad8
MB		 1430 ev_name, w->name, ret);
1431 }
1432}
1433
b22ead2a 1434/* Apply the coalesced changes from a DAPM sequence */
95dd5cd6 1435static void dapm_seq_run_coalesced(struct snd_soc_card *card,
b22ead2a 1436 struct list_head *pending)
163cac06 1437{
68f89ad8 1438 struct snd_soc_dapm_widget *w;
de9ba98b 1439 int reg;
b22ead2a
MB		 1440 unsigned int value = 0;
1441 unsigned int mask = 0;
b22ead2a
MB		 1442
1443 reg = list_first_entry(pending, struct snd_soc_dapm_widget,
1444 power_list)->reg;
1445
1446 list_for_each_entry(w, pending, power_list) {
b22ead2a 1447 BUG_ON(reg != w->reg);
39eb5fd1 1448 w->power = w->new_power;
b22ead2a 1449
de9ba98b
LPC		 1450 mask |= w->mask << w->shift;
1451 if (w->power)
1452 value |= w->on_val << w->shift;
b22ead2a 1453 else
de9ba98b 1454 value |= w->off_val << w->shift;
b22ead2a 1455
95dd5cd6 1456 pop_dbg(w->dapm->dev, card->pop_time,
b22ead2a
MB		 1457 "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
1458 w->name, reg, value, mask);
81628103 1459
68f89ad8 1460 /* Check for events */
95dd5cd6
LPC		 1461 dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMU);
1462 dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMD);
81628103
MB		 1463 }
1464
1465 if (reg >= 0) {
29376bc7
MB		 1466 /* Any widget will do, they should all be updating the
1467 * same register.
1468 */
1469 w = list_first_entry(pending, struct snd_soc_dapm_widget,
1470 power_list);
1471
95dd5cd6 1472 pop_dbg(w->dapm->dev, card->pop_time,
81628103 1473 "pop test : Applying 0x%x/0x%x to %x in %dms\n",
3a45b867
JN		 1474 value, mask, reg, card->pop_time);
1475 pop_wait(card->pop_time);
49575fb5 1476 soc_widget_update_bits_locked(w, reg, mask, value);
b22ead2a
MB		 1477 }
1478
81628103 1479 list_for_each_entry(w, pending, power_list) {
95dd5cd6
LPC		 1480 dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMU);
1481 dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMD);
81628103 1482 }
b22ead2a 1483}
42aa3418 1484
b22ead2a
MB		 1485/* Apply a DAPM power sequence.
1486 *
1487 * We walk over a pre-sorted list of widgets to apply power to. In
1488 * order to minimise the number of writes to the device required
1489 * multiple widgets will be updated in a single write where possible.
1490 * Currently anything that requires more than a single write is not
1491 * handled.
1492 */
95dd5cd6
LPC		 1493static void dapm_seq_run(struct snd_soc_card *card,
1494 struct list_head *list, int event, bool power_up)
b22ead2a
MB		 1495{
1496 struct snd_soc_dapm_widget *w, *n;
1497 LIST_HEAD(pending);
1498 int cur_sort = -1;
20e4859d 1499 int cur_subseq = -1;
b22ead2a 1500 int cur_reg = SND_SOC_NOPM;
7be31be8 1501 struct snd_soc_dapm_context *cur_dapm = NULL;
474b62d6 1502 int ret, i;
828a842f
MB		 1503 int *sort;
1504
1505 if (power_up)
1506 sort = dapm_up_seq;
1507 else
1508 sort = dapm_down_seq;
163cac06 1509
b22ead2a
MB		 1510 list_for_each_entry_safe(w, n, list, power_list) {
1511 ret = 0;
1512
1513 /* Do we need to apply any queued changes? */
7be31be8 1514 if (sort[w->id] != cur_sort || w->reg != cur_reg ||
20e4859d 1515 w->dapm != cur_dapm || w->subseq != cur_subseq) {
b22ead2a 1516 if (!list_empty(&pending))
95dd5cd6 1517 dapm_seq_run_coalesced(card, &pending);
b22ead2a 1518
474b62d6
MB		 1519 if (cur_dapm && cur_dapm->seq_notifier) {
1520 for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
1521 if (sort[i] == cur_sort)
1522 cur_dapm->seq_notifier(cur_dapm,
f85a9e0d
MB		 1523 i,
1524 cur_subseq);
474b62d6
MB		 1525 }
1526
b22ead2a
MB		 1527 INIT_LIST_HEAD(&pending);
1528 cur_sort = -1;
b0b3e6f8 1529 cur_subseq = INT_MIN;
b22ead2a 1530 cur_reg = SND_SOC_NOPM;
7be31be8 1531 cur_dapm = NULL;
b22ead2a
MB		 1532 }
1533
163cac06
MB		 1534 switch (w->id) {
1535 case snd_soc_dapm_pre:
1536 if (!w->event)
b22ead2a
MB		 1537 list_for_each_entry_safe_continue(w, n, list,
1538 power_list);
163cac06 1539
b22ead2a 1540 if (event == SND_SOC_DAPM_STREAM_START)
163cac06
MB		 1541 ret = w->event(w,
1542 NULL, SND_SOC_DAPM_PRE_PMU);
b22ead2a 1543 else if (event == SND_SOC_DAPM_STREAM_STOP)
163cac06
MB		 1544 ret = w->event(w,
1545 NULL, SND_SOC_DAPM_PRE_PMD);
163cac06
MB		 1546 break;
1547
1548 case snd_soc_dapm_post:
1549 if (!w->event)
b22ead2a
MB		 1550 list_for_each_entry_safe_continue(w, n, list,
1551 power_list);
163cac06 1552
b22ead2a 1553 if (event == SND_SOC_DAPM_STREAM_START)
163cac06
MB		 1554 ret = w->event(w,
1555 NULL, SND_SOC_DAPM_POST_PMU);
b22ead2a 1556 else if (event == SND_SOC_DAPM_STREAM_STOP)
163cac06
MB		 1557 ret = w->event(w,
1558 NULL, SND_SOC_DAPM_POST_PMD);
163cac06
MB		 1559 break;
1560
b22ead2a 1561 default:
81628103
MB		 1562 /* Queue it up for application */
1563 cur_sort = sort[w->id];
20e4859d 1564 cur_subseq = w->subseq;
81628103 1565 cur_reg = w->reg;
7be31be8 1566 cur_dapm = w->dapm;
81628103
MB		 1567 list_move(&w->power_list, &pending);
1568 break;
163cac06 1569 }
b22ead2a
MB		 1570
1571 if (ret < 0)
f7d41ae8 1572 dev_err(w->dapm->dev,
30a6a1a4 1573 "ASoC: Failed to apply widget power: %d\n", ret);
6ea31b9f 1574 }
b22ead2a
MB		 1575
1576 if (!list_empty(&pending))
95dd5cd6 1577 dapm_seq_run_coalesced(card, &pending);
474b62d6
MB		 1578
1579 if (cur_dapm && cur_dapm->seq_notifier) {
1580 for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
1581 if (sort[i] == cur_sort)
1582 cur_dapm->seq_notifier(cur_dapm,
f85a9e0d 1583 i, cur_subseq);
474b62d6 1584 }
42aa3418
MB		 1585}
1586
95dd5cd6 1587static void dapm_widget_update(struct snd_soc_card *card)
97404f2e 1588{
95dd5cd6 1589 struct snd_soc_dapm_update *update = card->update;
ce6cfaf1
LPC		 1590 struct snd_soc_dapm_widget_list *wlist;
1591 struct snd_soc_dapm_widget *w = NULL;
1592 unsigned int wi;
97404f2e
MB		 1593 int ret;
1594
57295073 1595 if (!update || !dapm_kcontrol_is_powered(update->kcontrol))
97404f2e
MB		 1596 return;
1597
e84357f7 1598 wlist = dapm_kcontrol_get_wlist(update->kcontrol);
97404f2e 1599
ce6cfaf1
LPC		 1600 for (wi = 0; wi < wlist->num_widgets; wi++) {
1601 w = wlist->widgets[wi];
1602
1603 if (w->event && (w->event_flags & SND_SOC_DAPM_PRE_REG)) {
1604 ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG);
1605 if (ret != 0)
95dd5cd6 1606 dev_err(w->dapm->dev, "ASoC: %s DAPM pre-event failed: %d\n",
ce6cfaf1
LPC		 1607 w->name, ret);
1608 }
97404f2e
MB		 1609 }
1610
ce6cfaf1
LPC		 1611 if (!w)
1612 return;
1613
49575fb5 1614 ret = soc_widget_update_bits_locked(w, update->reg, update->mask,
97404f2e
MB		 1615 update->val);
1616 if (ret < 0)
95dd5cd6 1617 dev_err(w->dapm->dev, "ASoC: %s DAPM update failed: %d\n",
30a6a1a4 1618 w->name, ret);
97404f2e 1619
ce6cfaf1
LPC		 1620 for (wi = 0; wi < wlist->num_widgets; wi++) {
1621 w = wlist->widgets[wi];
1622
1623 if (w->event && (w->event_flags & SND_SOC_DAPM_POST_REG)) {
1624 ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG);
1625 if (ret != 0)
95dd5cd6 1626 dev_err(w->dapm->dev, "ASoC: %s DAPM post-event failed: %d\n",
ce6cfaf1
LPC		 1627 w->name, ret);
1628 }
97404f2e
MB		 1629 }
1630}
1631
9d0624a7
MB		 1632/* Async callback run prior to DAPM sequences - brings to _PREPARE if
1633 * they're changing state.
1634 */
1635static void dapm_pre_sequence_async(void *data, async_cookie_t cookie)
1636{
1637 struct snd_soc_dapm_context *d = data;
1638 int ret;
1639
56fba41f
MB		 1640 /* If we're off and we're not supposed to be go into STANDBY */
1641 if (d->bias_level == SND_SOC_BIAS_OFF &&
1642 d->target_bias_level != SND_SOC_BIAS_OFF) {
f1aac484
MB		 1643 if (d->dev)
1644 pm_runtime_get_sync(d->dev);
1645
9d0624a7
MB		 1646 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1647 if (ret != 0)
1648 dev_err(d->dev,
30a6a1a4 1649 "ASoC: Failed to turn on bias: %d\n", ret);
9d0624a7
MB		 1650 }
1651
56fba41f
MB		 1652 /* Prepare for a STADDBY->ON or ON->STANDBY transition */
1653 if (d->bias_level != d->target_bias_level) {
9d0624a7
MB		 1654 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE);
1655 if (ret != 0)
1656 dev_err(d->dev,
30a6a1a4 1657 "ASoC: Failed to prepare bias: %d\n", ret);
9d0624a7
MB		 1658 }
1659}
1660
1661/* Async callback run prior to DAPM sequences - brings to their final
1662 * state.
1663 */
1664static void dapm_post_sequence_async(void *data, async_cookie_t cookie)
1665{
1666 struct snd_soc_dapm_context *d = data;
1667 int ret;
1668
1669 /* If we just powered the last thing off drop to standby bias */
56fba41f
MB		 1670 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1671 (d->target_bias_level == SND_SOC_BIAS_STANDBY ||
1672 d->target_bias_level == SND_SOC_BIAS_OFF)) {
9d0624a7
MB		 1673 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1674 if (ret != 0)
30a6a1a4 1675 dev_err(d->dev, "ASoC: Failed to apply standby bias: %d\n",
9d0624a7
MB		 1676 ret);
1677 }
97404f2e 1678
9d0624a7 1679 /* If we're in standby and can support bias off then do that */
56fba41f
MB		 1680 if (d->bias_level == SND_SOC_BIAS_STANDBY &&
1681 d->target_bias_level == SND_SOC_BIAS_OFF) {
9d0624a7
MB		 1682 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF);
1683 if (ret != 0)
30a6a1a4
LG		 1684 dev_err(d->dev, "ASoC: Failed to turn off bias: %d\n",
1685 ret);
f1aac484
MB		 1686
1687 if (d->dev)
fb644e9c 1688 pm_runtime_put(d->dev);
9d0624a7
MB		 1689 }
1690
1691 /* If we just powered up then move to active bias */
56fba41f
MB		 1692 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1693 d->target_bias_level == SND_SOC_BIAS_ON) {
9d0624a7
MB		 1694 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON);
1695 if (ret != 0)
30a6a1a4 1696 dev_err(d->dev, "ASoC: Failed to apply active bias: %d\n",
9d0624a7
MB		 1697 ret);
1698 }
1699}
97404f2e 1700
fe4fda5d
MB		 1701static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget *peer,
1702 bool power, bool connect)
1703{
1704 /* If a connection is being made or broken then that update
1705 * will have marked the peer dirty, otherwise the widgets are
1706 * not connected and this update has no impact. */
1707 if (!connect)
1708 return;
1709
1710 /* If the peer is already in the state we're moving to then we
1711 * won't have an impact on it. */
1712 if (power != peer->power)
75c1f891 1713 dapm_mark_dirty(peer, "peer state change");
fe4fda5d
MB		 1714}
1715
05623c43
MB		 1716static void dapm_widget_set_power(struct snd_soc_dapm_widget *w, bool power,
1717 struct list_head *up_list,
1718 struct list_head *down_list)
1719{
db432b41
MB		 1720 struct snd_soc_dapm_path *path;
1721
05623c43
MB		 1722 if (w->power == power)
1723 return;
1724
1725 trace_snd_soc_dapm_widget_power(w, power);
1726
db432b41 1727 /* If we changed our power state perhaps our neigbours changed
fe4fda5d 1728 * also.
db432b41
MB		 1729 */
1730 list_for_each_entry(path, &w->sources, list_sink) {
1731 if (path->source) {
fe4fda5d
MB		 1732 dapm_widget_set_peer_power(path->source, power,
1733 path->connect);
db432b41
MB		 1734 }
1735 }
f3bf3e45
MB		 1736 switch (w->id) {
1737 case snd_soc_dapm_supply:
62ea874a 1738 case snd_soc_dapm_regulator_supply:
d7e7eb91 1739 case snd_soc_dapm_clock_supply:
57295073 1740 case snd_soc_dapm_kcontrol:
f3bf3e45
MB		 1741 /* Supplies can't affect their outputs, only their inputs */
1742 break;
1743 default:
1744 list_for_each_entry(path, &w->sinks, list_source) {
1745 if (path->sink) {
1746 dapm_widget_set_peer_power(path->sink, power,
1747 path->connect);
1748 }
db432b41 1749 }
f3bf3e45 1750 break;
db432b41
MB		 1751 }
1752
05623c43
MB		 1753 if (power)
1754 dapm_seq_insert(w, up_list, true);
1755 else
1756 dapm_seq_insert(w, down_list, false);
05623c43
MB		 1757}
1758
7c81beb0
MB		 1759static void dapm_power_one_widget(struct snd_soc_dapm_widget *w,
1760 struct list_head *up_list,
1761 struct list_head *down_list)
1762{
7c81beb0
MB		 1763 int power;
1764
1765 switch (w->id) {
1766 case snd_soc_dapm_pre:
1767 dapm_seq_insert(w, down_list, false);
1768 break;
1769 case snd_soc_dapm_post:
1770 dapm_seq_insert(w, up_list, true);
1771 break;
1772
1773 default:
d805002b 1774 power = dapm_widget_power_check(w);
7c81beb0 1775
05623c43 1776 dapm_widget_set_power(w, power, up_list, down_list);
7c81beb0
MB		 1777 break;
1778 }
1779}
1780
2b97eabc
RP		 1781/*
1782 * Scan each dapm widget for complete audio path.
1783 * A complete path is a route that has valid endpoints i.e.:-
1784 *
1785 * o DAC to output pin.
1786 * o Input Pin to ADC.
1787 * o Input pin to Output pin (bypass, sidetone)
1788 * o DAC to ADC (loopback).
1789 */
95dd5cd6 1790static int dapm_power_widgets(struct snd_soc_card *card, int event)
2b97eabc
RP		 1791{
1792 struct snd_soc_dapm_widget *w;
7be31be8 1793 struct snd_soc_dapm_context *d;
291f3bbc
MB		 1794 LIST_HEAD(up_list);
1795 LIST_HEAD(down_list);
2955b47d 1796 ASYNC_DOMAIN_EXCLUSIVE(async_domain);
56fba41f 1797 enum snd_soc_bias_level bias;
6d3ddc81 1798
84e90930
MB		 1799 trace_snd_soc_dapm_start(card);
1800
56fba41f 1801 list_for_each_entry(d, &card->dapm_list, list) {
497098be
MB		 1802 if (d->idle_bias_off)
1803 d->target_bias_level = SND_SOC_BIAS_OFF;
1804 else
1805 d->target_bias_level = SND_SOC_BIAS_STANDBY;
56fba41f 1806 }
7be31be8 1807
6c120e19 1808 dapm_reset(card);
9b8a83b2 1809
6d3ddc81 1810 /* Check which widgets we need to power and store them in
db432b41
MB		 1811 * lists indicating if they should be powered up or down. We
1812 * only check widgets that have been flagged as dirty but note
1813 * that new widgets may be added to the dirty list while we
1814 * iterate.
6d3ddc81 1815 */
db432b41 1816 list_for_each_entry(w, &card->dapm_dirty, dirty) {
7c81beb0 1817 dapm_power_one_widget(w, &up_list, &down_list);
2b97eabc
RP		 1818 }
1819
f9de6d74 1820 list_for_each_entry(w, &card->widgets, list) {
0ff97ebf
MB		 1821 switch (w->id) {
1822 case snd_soc_dapm_pre:
1823 case snd_soc_dapm_post:
1824 /* These widgets always need to be powered */
1825 break;
1826 default:
1827 list_del_init(&w->dirty);
1828 break;
1829 }
db432b41 1830
39eb5fd1 1831 if (w->new_power) {
f9de6d74
MB		 1832 d = w->dapm;
1833
1834 /* Supplies and micbiases only bring the
1835 * context up to STANDBY as unless something
1836 * else is active and passing audio they
afe62367
MB		 1837 * generally don't require full power. Signal
1838 * generators are virtual pins and have no
1839 * power impact themselves.
f9de6d74
MB		 1840 */
1841 switch (w->id) {
afe62367
MB		 1842 case snd_soc_dapm_siggen:
1843 break;
f9de6d74 1844 case snd_soc_dapm_supply:
62ea874a 1845 case snd_soc_dapm_regulator_supply:
d7e7eb91 1846 case snd_soc_dapm_clock_supply:
f9de6d74
MB		 1847 case snd_soc_dapm_micbias:
1848 if (d->target_bias_level < SND_SOC_BIAS_STANDBY)
1849 d->target_bias_level = SND_SOC_BIAS_STANDBY;
1850 break;
1851 default:
1852 d->target_bias_level = SND_SOC_BIAS_ON;
1853 break;
1854 }
1855 }
1856
1857 }
1858
85a843c5
MB		 1859 /* Force all contexts in the card to the same bias state if
1860 * they're not ground referenced.
1861 */
56fba41f 1862 bias = SND_SOC_BIAS_OFF;
52ba67bf 1863 list_for_each_entry(d, &card->dapm_list, list)
56fba41f
MB		 1864 if (d->target_bias_level > bias)
1865 bias = d->target_bias_level;
52ba67bf 1866 list_for_each_entry(d, &card->dapm_list, list)
85a843c5
MB		 1867 if (!d->idle_bias_off)
1868 d->target_bias_level = bias;
52ba67bf 1869
de02d078 1870 trace_snd_soc_dapm_walk_done(card);
52ba67bf 1871
9d0624a7 1872 /* Run all the bias changes in parallel */
95dd5cd6 1873 list_for_each_entry(d, &card->dapm_list, list)
9d0624a7
MB		 1874 async_schedule_domain(dapm_pre_sequence_async, d,
1875 &async_domain);
1876 async_synchronize_full_domain(&async_domain);
452c5eaa 1877
cf1f7c6e 1878 list_for_each_entry(w, &down_list, power_list) {
95dd5cd6 1879 dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMD);
80114129
MB		 1880 }
1881
cf1f7c6e 1882 list_for_each_entry(w, &up_list, power_list) {
95dd5cd6 1883 dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMU);
80114129
MB		 1884 }
1885
6d3ddc81 1886 /* Power down widgets first; try to avoid amplifying pops. */
95dd5cd6 1887 dapm_seq_run(card, &down_list, event, false);
2b97eabc 1888
95dd5cd6 1889 dapm_widget_update(card);
97404f2e 1890
6d3ddc81 1891 /* Now power up. */
95dd5cd6 1892 dapm_seq_run(card, &up_list, event, true);
2b97eabc 1893
9d0624a7 1894 /* Run all the bias changes in parallel */
95dd5cd6 1895 list_for_each_entry(d, &card->dapm_list, list)
9d0624a7
MB		 1896 async_schedule_domain(dapm_post_sequence_async, d,
1897 &async_domain);
1898 async_synchronize_full_domain(&async_domain);
452c5eaa 1899
8078d87f
LG		 1900 /* do we need to notify any clients that DAPM event is complete */
1901 list_for_each_entry(d, &card->dapm_list, list) {
1902 if (d->stream_event)
1903 d->stream_event(d, event);
1904 }
1905
95dd5cd6 1906 pop_dbg(card->dev, card->pop_time,
fd8d3bc0 1907 "DAPM sequencing finished, waiting %dms\n", card->pop_time);
3a45b867 1908 pop_wait(card->pop_time);
cb507e7e 1909
84e90930
MB		 1910 trace_snd_soc_dapm_done(card);
1911
42aa3418 1912 return 0;
2b97eabc
RP		 1913}
1914
79fb9387 1915#ifdef CONFIG_DEBUG_FS
79fb9387
MB		 1916static ssize_t dapm_widget_power_read_file(struct file *file,
1917 char __user *user_buf,
1918 size_t count, loff_t *ppos)
1919{
1920 struct snd_soc_dapm_widget *w = file->private_data;
1921 char *buf;
1922 int in, out;
1923 ssize_t ret;
1924 struct snd_soc_dapm_path *p = NULL;
1925
1926 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
1927 if (!buf)
1928 return -ENOMEM;
1929
ec2e3031 1930 in = is_connected_input_ep(w, NULL);
1059ecfa 1931 dapm_clear_walk_input(w->dapm, &w->sources);
ec2e3031 1932 out = is_connected_output_ep(w, NULL);
1059ecfa 1933 dapm_clear_walk_output(w->dapm, &w->sinks);
79fb9387 1934
f13ebada
MB		 1935 ret = snprintf(buf, PAGE_SIZE, "%s: %s%s in %d out %d",
1936 w->name, w->power ? "On" : "Off",
1937 w->force ? " (forced)" : "", in, out);
79fb9387 1938
d033c36a
MB		 1939 if (w->reg >= 0)
1940 ret += snprintf(buf + ret, PAGE_SIZE - ret,
de9ba98b
LPC		 1941 " - R%d(0x%x) mask 0x%x",
1942 w->reg, w->reg, w->mask << w->shift);
d033c36a
MB		 1943
1944 ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n");
1945
3eef08ba
MB		 1946 if (w->sname)
1947 ret += snprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n",
1948 w->sname,
1949 w->active ? "active" : "inactive");
79fb9387
MB		 1950
1951 list_for_each_entry(p, &w->sources, list_sink) {
215edda3
MB		 1952 if (p->connected && !p->connected(w, p->sink))
1953 continue;
1954
79fb9387
MB		 1955 if (p->connect)
1956 ret += snprintf(buf + ret, PAGE_SIZE - ret,
67f5ed6e 1957 " in \"%s\" \"%s\"\n",
79fb9387
MB		 1958 p->name ? p->name : "static",
1959 p->source->name);
1960 }
1961 list_for_each_entry(p, &w->sinks, list_source) {
215edda3
MB		 1962 if (p->connected && !p->connected(w, p->sink))
1963 continue;
1964
79fb9387
MB		 1965 if (p->connect)
1966 ret += snprintf(buf + ret, PAGE_SIZE - ret,
67f5ed6e 1967 " out \"%s\" \"%s\"\n",
79fb9387
MB		 1968 p->name ? p->name : "static",
1969 p->sink->name);
1970 }
1971
1972 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
1973
1974 kfree(buf);
1975 return ret;
1976}
1977
1978static const struct file_operations dapm_widget_power_fops = {
234e3405 1979 .open = simple_open,
79fb9387 1980 .read = dapm_widget_power_read_file,
6038f373 1981 .llseek = default_llseek,
79fb9387
MB		 1982};
1983
ef49e4fa
MB		 1984static ssize_t dapm_bias_read_file(struct file *file, char __user *user_buf,
1985 size_t count, loff_t *ppos)
1986{
1987 struct snd_soc_dapm_context *dapm = file->private_data;
1988 char *level;
1989
1990 switch (dapm->bias_level) {
1991 case SND_SOC_BIAS_ON:
1992 level = "On\n";
1993 break;
1994 case SND_SOC_BIAS_PREPARE:
1995 level = "Prepare\n";
1996 break;
1997 case SND_SOC_BIAS_STANDBY:
1998 level = "Standby\n";
1999 break;
2000 case SND_SOC_BIAS_OFF:
2001 level = "Off\n";
2002 break;
2003 default:
2004 BUG();
2005 level = "Unknown\n";
2006 break;
2007 }
2008
2009 return simple_read_from_buffer(user_buf, count, ppos, level,
2010 strlen(level));
2011}
2012
2013static const struct file_operations dapm_bias_fops = {
234e3405 2014 .open = simple_open,
ef49e4fa
MB		 2015 .read = dapm_bias_read_file,
2016 .llseek = default_llseek,
2017};
2018
8eecaf62
LPC		 2019void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
2020 struct dentry *parent)
79fb9387 2021{
79fb9387
MB		 2022 struct dentry *d;
2023
8eecaf62
LPC		 2024 dapm->debugfs_dapm = debugfs_create_dir("dapm", parent);
2025
2026 if (!dapm->debugfs_dapm) {
f1e90af2 2027 dev_warn(dapm->dev,
30a6a1a4 2028 "ASoC: Failed to create DAPM debugfs directory\n");
79fb9387 2029 return;
8eecaf62 2030 }
79fb9387 2031
ef49e4fa
MB		 2032 d = debugfs_create_file("bias_level", 0444,
2033 dapm->debugfs_dapm, dapm,
2034 &dapm_bias_fops);
2035 if (!d)
2036 dev_warn(dapm->dev,
2037 "ASoC: Failed to create bias level debugfs file\n");
d5d1e0be 2038}
ef49e4fa 2039
d5d1e0be
LPC		 2040static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
2041{
2042 struct snd_soc_dapm_context *dapm = w->dapm;
2043 struct dentry *d;
79fb9387 2044
d5d1e0be
LPC		 2045 if (!dapm->debugfs_dapm || !w->name)
2046 return;
2047
2048 d = debugfs_create_file(w->name, 0444,
2049 dapm->debugfs_dapm, w,
2050 &dapm_widget_power_fops);
2051 if (!d)
2052 dev_warn(w->dapm->dev,
2053 "ASoC: Failed to create %s debugfs file\n",
2054 w->name);
79fb9387 2055}
d5d1e0be 2056
6c45e126
LPC		 2057static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
2058{
2059 debugfs_remove_recursive(dapm->debugfs_dapm);
2060}
2061
79fb9387 2062#else
8eecaf62
LPC		 2063void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
2064 struct dentry *parent)
79fb9387
MB		 2065{
2066}
d5d1e0be
LPC		 2067
2068static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
2069{
2070}
2071
6c45e126
LPC		 2072static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
2073{
2074}
2075
79fb9387
MB		 2076#endif
2077
2b97eabc 2078/* test and update the power status of a mux widget */
95dd5cd6 2079static int soc_dapm_mux_update_power(struct snd_soc_card *card,
40f02cd9 2080 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e)
2b97eabc
RP		 2081{
2082 struct snd_soc_dapm_path *path;
2083 int found = 0;
2084
2b97eabc 2085 /* find dapm widget path assoc with kcontrol */
5106b92f 2086 dapm_kcontrol_for_each_path(path, kcontrol) {
cb01e2b9 2087 if (!path->name || !e->texts[mux])
2b97eabc
RP		 2088 continue;
2089
2090 found = 1;
2091 /* we now need to match the string in the enum to the path */
db432b41 2092 if (!(strcmp(path->name, e->texts[mux]))) {
2b97eabc 2093 path->connect = 1; /* new connection */
75c1f891 2094 dapm_mark_dirty(path->source, "mux connection");
db432b41
MB		 2095 } else {
2096 if (path->connect)
75c1f891
MB		 2097 dapm_mark_dirty(path->source,
2098 "mux disconnection");
2b97eabc 2099 path->connect = 0; /* old connection must be powered down */
db432b41 2100 }
ce6cfaf1 2101 dapm_mark_dirty(path->sink, "mux change");
2b97eabc
RP		 2102 }
2103
ce6cfaf1 2104 if (found)
95dd5cd6 2105 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2b97eabc 2106
618dae11 2107 return found;
2b97eabc 2108}
4edbb345 2109
ce6cfaf1 2110int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_context *dapm,
6b3fc03b
LPC		 2111 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e,
2112 struct snd_soc_dapm_update *update)
4edbb345 2113{
ce6cfaf1 2114 struct snd_soc_card *card = dapm->card;
4edbb345
LG		 2115 int ret;
2116
3cd04343 2117 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
564c6504 2118 card->update = update;
95dd5cd6 2119 ret = soc_dapm_mux_update_power(card, kcontrol, mux, e);
564c6504 2120 card->update = NULL;
4edbb345 2121 mutex_unlock(&card->dapm_mutex);
618dae11 2122 if (ret > 0)
c3f48ae6 2123 soc_dpcm_runtime_update(card);
4edbb345
LG		 2124 return ret;
2125}
40f02cd9 2126EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power);
2b97eabc 2127
1b075e3f 2128/* test and update the power status of a mixer or switch widget */
95dd5cd6 2129static int soc_dapm_mixer_update_power(struct snd_soc_card *card,
283375ce 2130 struct snd_kcontrol *kcontrol, int connect)
2b97eabc
RP		 2131{
2132 struct snd_soc_dapm_path *path;
2133 int found = 0;
2134
2b97eabc 2135 /* find dapm widget path assoc with kcontrol */
5106b92f 2136 dapm_kcontrol_for_each_path(path, kcontrol) {
2b97eabc 2137 found = 1;
283375ce 2138 path->connect = connect;
75c1f891 2139 dapm_mark_dirty(path->source, "mixer connection");
ce6cfaf1 2140 dapm_mark_dirty(path->sink, "mixer update");
2b97eabc
RP		 2141 }
2142
ce6cfaf1 2143 if (found)
95dd5cd6 2144 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2b97eabc 2145
618dae11 2146 return found;
2b97eabc 2147}
4edbb345 2148
ce6cfaf1 2149int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_context *dapm,
6b3fc03b
LPC		 2150 struct snd_kcontrol *kcontrol, int connect,
2151 struct snd_soc_dapm_update *update)
4edbb345 2152{
ce6cfaf1 2153 struct snd_soc_card *card = dapm->card;
4edbb345
LG		 2154 int ret;
2155
3cd04343 2156 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
564c6504 2157 card->update = update;
95dd5cd6 2158 ret = soc_dapm_mixer_update_power(card, kcontrol, connect);
564c6504 2159 card->update = NULL;
4edbb345 2160 mutex_unlock(&card->dapm_mutex);
618dae11 2161 if (ret > 0)
c3f48ae6 2162 soc_dpcm_runtime_update(card);
4edbb345
LG		 2163 return ret;
2164}
40f02cd9 2165EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power);
2b97eabc
RP		 2166
2167/* show dapm widget status in sys fs */
2168static ssize_t dapm_widget_show(struct device *dev,
2169 struct device_attribute *attr, char *buf)
2170{
36ae1a96 2171 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
f0fba2ad 2172 struct snd_soc_codec *codec =rtd->codec;
2b97eabc
RP		 2173 struct snd_soc_dapm_widget *w;
2174 int count = 0;
2175 char *state = "not set";
2176
97c866de
JN		 2177 list_for_each_entry(w, &codec->card->widgets, list) {
2178 if (w->dapm != &codec->dapm)
2179 continue;
2b97eabc
RP		 2180
2181 /* only display widgets that burnm power */
2182 switch (w->id) {
2183 case snd_soc_dapm_hp:
2184 case snd_soc_dapm_mic:
2185 case snd_soc_dapm_spk:
2186 case snd_soc_dapm_line:
2187 case snd_soc_dapm_micbias:
2188 case snd_soc_dapm_dac:
2189 case snd_soc_dapm_adc:
2190 case snd_soc_dapm_pga:
d88429a6 2191 case snd_soc_dapm_out_drv:
2b97eabc 2192 case snd_soc_dapm_mixer:
ca9c1aae 2193 case snd_soc_dapm_mixer_named_ctl:
246d0a17 2194 case snd_soc_dapm_supply:
62ea874a 2195 case snd_soc_dapm_regulator_supply:
d7e7eb91 2196 case snd_soc_dapm_clock_supply:
2b97eabc
RP		 2197 if (w->name)
2198 count += sprintf(buf + count, "%s: %s\n",
2199 w->name, w->power ? "On":"Off");
2200 break;
2201 default:
2202 break;
2203 }
2204 }
2205
ce6120cc 2206 switch (codec->dapm.bias_level) {
0be9898a
MB		 2207 case SND_SOC_BIAS_ON:
2208 state = "On";
2b97eabc 2209 break;
0be9898a
MB		 2210 case SND_SOC_BIAS_PREPARE:
2211 state = "Prepare";
2b97eabc 2212 break;
0be9898a
MB		 2213 case SND_SOC_BIAS_STANDBY:
2214 state = "Standby";
2b97eabc 2215 break;
0be9898a
MB		 2216 case SND_SOC_BIAS_OFF:
2217 state = "Off";
2b97eabc
RP		 2218 break;
2219 }
2220 count += sprintf(buf + count, "PM State: %s\n", state);
2221
2222 return count;
2223}
2224
2225static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL);
2226
2227int snd_soc_dapm_sys_add(struct device *dev)
2228{
12ef193d 2229 return device_create_file(dev, &dev_attr_dapm_widget);
2b97eabc
RP		 2230}
2231
2232static void snd_soc_dapm_sys_remove(struct device *dev)
2233{
aef90843 2234 device_remove_file(dev, &dev_attr_dapm_widget);
2b97eabc
RP		 2235}
2236
8872293f
LPC		 2237static void dapm_free_path(struct snd_soc_dapm_path *path)
2238{
2239 list_del(&path->list_sink);
2240 list_del(&path->list_source);
5106b92f 2241 list_del(&path->list_kcontrol);
8872293f 2242 list_del(&path->list);
8872293f
LPC		 2243 kfree(path);
2244}
2245
2b97eabc 2246/* free all dapm widgets and resources */
ce6120cc 2247static void dapm_free_widgets(struct snd_soc_dapm_context *dapm)
2b97eabc
RP		 2248{
2249 struct snd_soc_dapm_widget *w, *next_w;
2250 struct snd_soc_dapm_path *p, *next_p;
2251
97c866de
JN		 2252 list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) {
2253 if (w->dapm != dapm)
2254 continue;
2b97eabc 2255 list_del(&w->list);
8ddab3f5
JN		 2256 /*
2257 * remove source and sink paths associated to this widget.
2258 * While removing the path, remove reference to it from both
2259 * source and sink widgets so that path is removed only once.
2260 */
8872293f
LPC		 2261 list_for_each_entry_safe(p, next_p, &w->sources, list_sink)
2262 dapm_free_path(p);
2263
2264 list_for_each_entry_safe(p, next_p, &w->sinks, list_source)
2265 dapm_free_path(p);
2266
fad59888 2267 kfree(w->kcontrols);
ead9b919 2268 kfree(w->name);
2b97eabc
RP		 2269 kfree(w);
2270 }
2b97eabc
RP		 2271}
2272
91a5fca4
LPC		 2273static struct snd_soc_dapm_widget *dapm_find_widget(
2274 struct snd_soc_dapm_context *dapm, const char *pin,
2275 bool search_other_contexts)
a5302181
LG		 2276{
2277 struct snd_soc_dapm_widget *w;
91a5fca4 2278 struct snd_soc_dapm_widget *fallback = NULL;
a5302181 2279
97c866de 2280 list_for_each_entry(w, &dapm->card->widgets, list) {
a5302181 2281 if (!strcmp(w->name, pin)) {
91a5fca4
LPC		 2282 if (w->dapm == dapm)
2283 return w;
2284 else
2285 fallback = w;
a5302181
LG		 2286 }
2287 }
2288
91a5fca4
LPC		 2289 if (search_other_contexts)
2290 return fallback;
2291
2292 return NULL;
2293}
2294
2295static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm,
2296 const char *pin, int status)
2297{
2298 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
2299
2300 if (!w) {
30a6a1a4 2301 dev_err(dapm->dev, "ASoC: DAPM unknown pin %s\n", pin);
91a5fca4 2302 return -EINVAL;
0d86733c
MB		 2303 }
2304
1a8b2d9d
MB		 2305 if (w->connected != status)
2306 dapm_mark_dirty(w, "pin configuration");
2307
91a5fca4
LPC		 2308 w->connected = status;
2309 if (status == 0)
2310 w->force = 0;
2311
2312 return 0;
a5302181
LG		 2313}
2314
2b97eabc 2315/**
a5302181 2316 * snd_soc_dapm_sync - scan and power dapm paths
ce6120cc 2317 * @dapm: DAPM context
2b97eabc
RP		 2318 *
2319 * Walks all dapm audio paths and powers widgets according to their
2320 * stream or path usage.
2321 *
2322 * Returns 0 for success.
2323 */
ce6120cc 2324int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm)
2b97eabc 2325{
a73fb2df
LG		 2326 int ret;
2327
4f4c0072
MB		 2328 /*
2329 * Suppress early reports (eg, jacks syncing their state) to avoid
2330 * silly DAPM runs during card startup.
2331 */
2332 if (!dapm->card || !dapm->card->instantiated)
2333 return 0;
2334
3cd04343 2335 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
95dd5cd6 2336 ret = dapm_power_widgets(dapm->card, SND_SOC_DAPM_STREAM_NOP);
a73fb2df
LG		 2337 mutex_unlock(&dapm->card->dapm_mutex);
2338 return ret;
2b97eabc 2339}
a5302181 2340EXPORT_SYMBOL_GPL(snd_soc_dapm_sync);
2b97eabc 2341
2553628e
LPC		 2342static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
2343 struct snd_soc_dapm_widget *wsource, struct snd_soc_dapm_widget *wsink,
2344 const char *control,
2345 int (*connected)(struct snd_soc_dapm_widget *source,
2346 struct snd_soc_dapm_widget *sink))
2b97eabc
RP		 2347{
2348 struct snd_soc_dapm_path *path;
2553628e 2349 int ret;
2b97eabc
RP		 2350
2351 path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL);
2352 if (!path)
2353 return -ENOMEM;
2354
2355 path->source = wsource;
2356 path->sink = wsink;
2553628e 2357 path->connected = connected;
2b97eabc 2358 INIT_LIST_HEAD(&path->list);
69c2d346 2359 INIT_LIST_HEAD(&path->list_kcontrol);
2b97eabc
RP		 2360 INIT_LIST_HEAD(&path->list_source);
2361 INIT_LIST_HEAD(&path->list_sink);
2362
2363 /* check for external widgets */
2364 if (wsink->id == snd_soc_dapm_input) {
2365 if (wsource->id == snd_soc_dapm_micbias ||
2366 wsource->id == snd_soc_dapm_mic ||
087d53ab
RC		 2367 wsource->id == snd_soc_dapm_line ||
2368 wsource->id == snd_soc_dapm_output)
2b97eabc
RP		 2369 wsink->ext = 1;
2370 }
2371 if (wsource->id == snd_soc_dapm_output) {
2372 if (wsink->id == snd_soc_dapm_spk ||
2373 wsink->id == snd_soc_dapm_hp ||
1e39221e
SF		 2374 wsink->id == snd_soc_dapm_line ||
2375 wsink->id == snd_soc_dapm_input)
2b97eabc
RP		 2376 wsource->ext = 1;
2377 }
2378
34742cb0
LPC		 2379 dapm_mark_dirty(wsource, "Route added");
2380 dapm_mark_dirty(wsink, "Route added");
2381
2b97eabc
RP		 2382 /* connect static paths */
2383 if (control == NULL) {
8ddab3f5 2384 list_add(&path->list, &dapm->card->paths);
2b97eabc
RP		 2385 list_add(&path->list_sink, &wsink->sources);
2386 list_add(&path->list_source, &wsource->sinks);
2387 path->connect = 1;
2388 return 0;
2389 }
2390
2391 /* connect dynamic paths */
dc2bea61 2392 switch (wsink->id) {
2b97eabc
RP		 2393 case snd_soc_dapm_adc:
2394 case snd_soc_dapm_dac:
2395 case snd_soc_dapm_pga:
d88429a6 2396 case snd_soc_dapm_out_drv:
2b97eabc
RP		 2397 case snd_soc_dapm_input:
2398 case snd_soc_dapm_output:
1ab97c8c 2399 case snd_soc_dapm_siggen:
2b97eabc
RP		 2400 case snd_soc_dapm_micbias:
2401 case snd_soc_dapm_vmid:
2402 case snd_soc_dapm_pre:
2403 case snd_soc_dapm_post:
246d0a17 2404 case snd_soc_dapm_supply:
62ea874a 2405 case snd_soc_dapm_regulator_supply:
d7e7eb91 2406 case snd_soc_dapm_clock_supply:
010ff262
MB		 2407 case snd_soc_dapm_aif_in:
2408 case snd_soc_dapm_aif_out:
4616274d
MB		 2409 case snd_soc_dapm_dai_in:
2410 case snd_soc_dapm_dai_out:
c74184ed 2411 case snd_soc_dapm_dai_link:
57295073 2412 case snd_soc_dapm_kcontrol:
8ddab3f5 2413 list_add(&path->list, &dapm->card->paths);
2b97eabc
RP		 2414 list_add(&path->list_sink, &wsink->sources);
2415 list_add(&path->list_source, &wsource->sinks);
2416 path->connect = 1;
2417 return 0;
2418 case snd_soc_dapm_mux:
24ff33ac 2419 case snd_soc_dapm_virt_mux:
74155556 2420 case snd_soc_dapm_value_mux:
ce6120cc 2421 ret = dapm_connect_mux(dapm, wsource, wsink, path, control,
82cfecdc 2422 &wsink->kcontrol_news[0]);
2b97eabc
RP		 2423 if (ret != 0)
2424 goto err;
2425 break;
2426 case snd_soc_dapm_switch:
2427 case snd_soc_dapm_mixer:
ca9c1aae 2428 case snd_soc_dapm_mixer_named_ctl:
ce6120cc 2429 ret = dapm_connect_mixer(dapm, wsource, wsink, path, control);
2b97eabc
RP		 2430 if (ret != 0)
2431 goto err;
2432 break;
2433 case snd_soc_dapm_hp:
2434 case snd_soc_dapm_mic:
2435 case snd_soc_dapm_line:
2436 case snd_soc_dapm_spk:
8ddab3f5 2437 list_add(&path->list, &dapm->card->paths);
2b97eabc
RP		 2438 list_add(&path->list_sink, &wsink->sources);
2439 list_add(&path->list_source, &wsource->sinks);
2440 path->connect = 0;
2441 return 0;
2442 }
fabd0384 2443
2b97eabc 2444 return 0;
2553628e
LPC		 2445err:
2446 kfree(path);
2447 return ret;
2448}
2b97eabc 2449
2553628e
LPC		 2450static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm,
2451 const struct snd_soc_dapm_route *route)
2452{
2453 struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w;
2454 struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL;
2455 const char *sink;
2456 const char *source;
2457 char prefixed_sink[80];
2458 char prefixed_source[80];
2459 int ret;
2460
2461 if (dapm->codec && dapm->codec->name_prefix) {
2462 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
2463 dapm->codec->name_prefix, route->sink);
2464 sink = prefixed_sink;
2465 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
2466 dapm->codec->name_prefix, route->source);
2467 source = prefixed_source;
2468 } else {
2469 sink = route->sink;
2470 source = route->source;
2471 }
2472
2473 /*
2474 * find src and dest widgets over all widgets but favor a widget from
2475 * current DAPM context
2476 */
2477 list_for_each_entry(w, &dapm->card->widgets, list) {
2478 if (!wsink && !(strcmp(w->name, sink))) {
2479 wtsink = w;
2480 if (w->dapm == dapm)
2481 wsink = w;
2482 continue;
2483 }
2484 if (!wsource && !(strcmp(w->name, source))) {
2485 wtsource = w;
2486 if (w->dapm == dapm)
2487 wsource = w;
2488 }
2489 }
2490 /* use widget from another DAPM context if not found from this */
2491 if (!wsink)
2492 wsink = wtsink;
2493 if (!wsource)
2494 wsource = wtsource;
2495
2496 if (wsource == NULL) {
2497 dev_err(dapm->dev, "ASoC: no source widget found for %s\n",
2498 route->source);
2499 return -ENODEV;
2500 }
2501 if (wsink == NULL) {
2502 dev_err(dapm->dev, "ASoC: no sink widget found for %s\n",
2503 route->sink);
2504 return -ENODEV;
2505 }
2506
2507 ret = snd_soc_dapm_add_path(dapm, wsource, wsink, route->control,
2508 route->connected);
2509 if (ret)
2510 goto err;
2511
2512 return 0;
2b97eabc 2513err:
30a6a1a4 2514 dev_warn(dapm->dev, "ASoC: no dapm match for %s --> %s --> %s\n",
2553628e 2515 source, route->control, sink);
2b97eabc
RP		 2516 return ret;
2517}
105f1c28 2518
efcc3c61
MB		 2519static int snd_soc_dapm_del_route(struct snd_soc_dapm_context *dapm,
2520 const struct snd_soc_dapm_route *route)
2521{
2522 struct snd_soc_dapm_path *path, *p;
2523 const char *sink;
2524 const char *source;
2525 char prefixed_sink[80];
2526 char prefixed_source[80];
2527
2528 if (route->control) {
2529 dev_err(dapm->dev,
30a6a1a4 2530 "ASoC: Removal of routes with controls not supported\n");
efcc3c61
MB		 2531 return -EINVAL;
2532 }
2533
2534 if (dapm->codec && dapm->codec->name_prefix) {
2535 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
2536 dapm->codec->name_prefix, route->sink);
2537 sink = prefixed_sink;
2538 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
2539 dapm->codec->name_prefix, route->source);
2540 source = prefixed_source;
2541 } else {
2542 sink = route->sink;
2543 source = route->source;
2544 }
2545
2546 path = NULL;
2547 list_for_each_entry(p, &dapm->card->paths, list) {
2548 if (strcmp(p->source->name, source) != 0)
2549 continue;
2550 if (strcmp(p->sink->name, sink) != 0)
2551 continue;
2552 path = p;
2553 break;
2554 }
2555
2556 if (path) {
2557 dapm_mark_dirty(path->source, "Route removed");
2558 dapm_mark_dirty(path->sink, "Route removed");
2559
8872293f 2560 dapm_free_path(path);
efcc3c61 2561 } else {
30a6a1a4 2562 dev_warn(dapm->dev, "ASoC: Route %s->%s does not exist\n",
efcc3c61
MB		 2563 source, sink);
2564 }
2565
2566 return 0;
2567}
2568
105f1c28
MB		 2569/**
2570 * snd_soc_dapm_add_routes - Add routes between DAPM widgets
ce6120cc 2571 * @dapm: DAPM context
105f1c28
MB		 2572 * @route: audio routes
2573 * @num: number of routes
2574 *
2575 * Connects 2 dapm widgets together via a named audio path. The sink is
2576 * the widget receiving the audio signal, whilst the source is the sender
2577 * of the audio signal.
2578 *
2579 * Returns 0 for success else error. On error all resources can be freed
2580 * with a call to snd_soc_card_free().
2581 */
ce6120cc 2582int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm,
105f1c28
MB		 2583 const struct snd_soc_dapm_route *route, int num)
2584{
62d4a4b9 2585 int i, r, ret = 0;
105f1c28 2586
a73fb2df 2587 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
105f1c28 2588 for (i = 0; i < num; i++) {
62d4a4b9
MB		 2589 r = snd_soc_dapm_add_route(dapm, route);
2590 if (r < 0) {
30a6a1a4
LG		 2591 dev_err(dapm->dev, "ASoC: Failed to add route %s -> %s -> %s\n",
2592 route->source,
2593 route->control ? route->control : "direct",
2594 route->sink);
62d4a4b9 2595 ret = r;
105f1c28
MB		 2596 }
2597 route++;
2598 }
a73fb2df 2599 mutex_unlock(&dapm->card->dapm_mutex);
105f1c28 2600
60884c27 2601 return ret;
105f1c28
MB		 2602}
2603EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes);
2604
efcc3c61
MB		 2605/**
2606 * snd_soc_dapm_del_routes - Remove routes between DAPM widgets
2607 * @dapm: DAPM context
2608 * @route: audio routes
2609 * @num: number of routes
2610 *
2611 * Removes routes from the DAPM context.
2612 */
2613int snd_soc_dapm_del_routes(struct snd_soc_dapm_context *dapm,
2614 const struct snd_soc_dapm_route *route, int num)
2615{
2616 int i, ret = 0;
2617
2618 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2619 for (i = 0; i < num; i++) {
2620 snd_soc_dapm_del_route(dapm, route);
2621 route++;
2622 }
2623 mutex_unlock(&dapm->card->dapm_mutex);
2624
2625 return ret;
2626}
2627EXPORT_SYMBOL_GPL(snd_soc_dapm_del_routes);
2628
bf3a9e13
MB		 2629static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context *dapm,
2630 const struct snd_soc_dapm_route *route)
2631{
2632 struct snd_soc_dapm_widget *source = dapm_find_widget(dapm,
2633 route->source,
2634 true);
2635 struct snd_soc_dapm_widget *sink = dapm_find_widget(dapm,
2636 route->sink,
2637 true);
2638 struct snd_soc_dapm_path *path;
2639 int count = 0;
2640
2641 if (!source) {
30a6a1a4 2642 dev_err(dapm->dev, "ASoC: Unable to find source %s for weak route\n",
bf3a9e13
MB		 2643 route->source);
2644 return -ENODEV;
2645 }
2646
2647 if (!sink) {
30a6a1a4 2648 dev_err(dapm->dev, "ASoC: Unable to find sink %s for weak route\n",
bf3a9e13
MB		 2649 route->sink);
2650 return -ENODEV;
2651 }
2652
2653 if (route->control || route->connected)
30a6a1a4 2654 dev_warn(dapm->dev, "ASoC: Ignoring control for weak route %s->%s\n",
bf3a9e13
MB		 2655 route->source, route->sink);
2656
2657 list_for_each_entry(path, &source->sinks, list_source) {
2658 if (path->sink == sink) {
2659 path->weak = 1;
2660 count++;
2661 }
2662 }
2663
2664 if (count == 0)
30a6a1a4 2665 dev_err(dapm->dev, "ASoC: No path found for weak route %s->%s\n",
bf3a9e13
MB		 2666 route->source, route->sink);
2667 if (count > 1)
30a6a1a4 2668 dev_warn(dapm->dev, "ASoC: %d paths found for weak route %s->%s\n",
bf3a9e13
MB		 2669 count, route->source, route->sink);
2670
2671 return 0;
2672}
2673
2674/**
2675 * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak
2676 * @dapm: DAPM context
2677 * @route: audio routes
2678 * @num: number of routes
2679 *
2680 * Mark existing routes matching those specified in the passed array
2681 * as being weak, meaning that they are ignored for the purpose of
2682 * power decisions. The main intended use case is for sidetone paths
2683 * which couple audio between other independent paths if they are both
2684 * active in order to make the combination work better at the user
2685 * level but which aren't intended to be "used".
2686 *
2687 * Note that CODEC drivers should not use this as sidetone type paths
2688 * can frequently also be used as bypass paths.
2689 */
2690int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context *dapm,
2691 const struct snd_soc_dapm_route *route, int num)
2692{
2693 int i, err;
2694 int ret = 0;
2695
a73fb2df 2696 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
bf3a9e13
MB		 2697 for (i = 0; i < num; i++) {
2698 err = snd_soc_dapm_weak_route(dapm, route);
2699 if (err)
2700 ret = err;
2701 route++;
2702 }
a73fb2df 2703 mutex_unlock(&dapm->card->dapm_mutex);
bf3a9e13
MB		 2704
2705 return ret;
2706}
2707EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes);
2708
2b97eabc
RP		 2709/**
2710 * snd_soc_dapm_new_widgets - add new dapm widgets
ce6120cc 2711 * @dapm: DAPM context
2b97eabc
RP		 2712 *
2713 * Checks the codec for any new dapm widgets and creates them if found.
2714 *
2715 * Returns 0 for success.
2716 */
824ef826 2717int snd_soc_dapm_new_widgets(struct snd_soc_card *card)
2b97eabc
RP		 2718{
2719 struct snd_soc_dapm_widget *w;
b66a70d5 2720 unsigned int val;
2b97eabc 2721
95dd5cd6 2722 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
a73fb2df 2723
95dd5cd6 2724 list_for_each_entry(w, &card->widgets, list)
2b97eabc
RP		 2725 {
2726 if (w->new)
2727 continue;
2728
fad59888
SW		 2729 if (w->num_kcontrols) {
2730 w->kcontrols = kzalloc(w->num_kcontrols *
2731 sizeof(struct snd_kcontrol *),
2732 GFP_KERNEL);
a73fb2df 2733 if (!w->kcontrols) {
95dd5cd6 2734 mutex_unlock(&card->dapm_mutex);
fad59888 2735 return -ENOMEM;
a73fb2df 2736 }
fad59888
SW		 2737 }
2738
2b97eabc
RP		 2739 switch(w->id) {
2740 case snd_soc_dapm_switch:
2741 case snd_soc_dapm_mixer:
ca9c1aae 2742 case snd_soc_dapm_mixer_named_ctl:
4b80b8c2 2743 dapm_new_mixer(w);
2b97eabc
RP		 2744 break;
2745 case snd_soc_dapm_mux:
24ff33ac 2746 case snd_soc_dapm_virt_mux:
2e72f8e3 2747 case snd_soc_dapm_value_mux:
4b80b8c2 2748 dapm_new_mux(w);
2b97eabc 2749 break;
2b97eabc 2750 case snd_soc_dapm_pga:
d88429a6 2751 case snd_soc_dapm_out_drv:
4b80b8c2 2752 dapm_new_pga(w);
2b97eabc 2753 break;
7ca3a18b 2754 default:
2b97eabc
RP		 2755 break;
2756 }
b66a70d5
MB		 2757
2758 /* Read the initial power state from the device */
2759 if (w->reg >= 0) {
de9ba98b
LPC		 2760 val = soc_widget_read(w, w->reg) >> w->shift;
2761 val &= w->mask;
2762 if (val == w->on_val)
b66a70d5
MB		 2763 w->power = 1;
2764 }
2765
2b97eabc 2766 w->new = 1;
d5d1e0be 2767
7508b12a 2768 dapm_mark_dirty(w, "new widget");
d5d1e0be 2769 dapm_debugfs_add_widget(w);
2b97eabc
RP		 2770 }
2771
95dd5cd6
LPC		 2772 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2773 mutex_unlock(&card->dapm_mutex);
2b97eabc
RP		 2774 return 0;
2775}
2776EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets);
2777
2778/**
2779 * snd_soc_dapm_get_volsw - dapm mixer get callback
2780 * @kcontrol: mixer control
ac11a2b3 2781 * @ucontrol: control element information
2b97eabc
RP		 2782 *
2783 * Callback to get the value of a dapm mixer control.
2784 *
2785 * Returns 0 for success.
2786 */
2787int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol,
2788 struct snd_ctl_elem_value *ucontrol)
2789{
eee5d7f9 2790 struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol);
57295073 2791 struct snd_soc_card *card = codec->card;
4eaa9819
JS		 2792 struct soc_mixer_control *mc =
2793 (struct soc_mixer_control *)kcontrol->private_value;
815ecf8d
JS		 2794 unsigned int reg = mc->reg;
2795 unsigned int shift = mc->shift;
4eaa9819 2796 int max = mc->max;
815ecf8d 2797 unsigned int mask = (1 << fls(max)) - 1;
da602ab8 2798 unsigned int invert = mc->invert;
57295073 2799 unsigned int val;
da602ab8
BT		 2800
2801 if (snd_soc_volsw_is_stereo(mc))
eee5d7f9 2802 dev_warn(codec->dapm.dev,
30a6a1a4 2803 "ASoC: Control '%s' is stereo, which is not supported\n",
da602ab8 2804 kcontrol->id.name);
2b97eabc 2805
57295073
LPC		 2806 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2807 if (dapm_kcontrol_is_powered(kcontrol))
2808 val = (snd_soc_read(codec, reg) >> shift) & mask;
2809 else
2810 val = dapm_kcontrol_get_value(kcontrol);
2811 mutex_unlock(&card->dapm_mutex);
2812
da602ab8 2813 if (invert)
57295073
LPC		 2814 ucontrol->value.integer.value[0] = max - val;
2815 else
2816 ucontrol->value.integer.value[0] = val;
2b97eabc
RP		 2817
2818 return 0;
2819}
2820EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw);
2821
2822/**
2823 * snd_soc_dapm_put_volsw - dapm mixer set callback
2824 * @kcontrol: mixer control
ac11a2b3 2825 * @ucontrol: control element information
2b97eabc
RP		 2826 *
2827 * Callback to set the value of a dapm mixer control.
2828 *
2829 * Returns 0 for success.
2830 */
2831int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol,
2832 struct snd_ctl_elem_value *ucontrol)
2833{
eee5d7f9 2834 struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol);
a73fb2df 2835 struct snd_soc_card *card = codec->card;
4eaa9819
JS		 2836 struct soc_mixer_control *mc =
2837 (struct soc_mixer_control *)kcontrol->private_value;
815ecf8d
JS		 2838 unsigned int reg = mc->reg;
2839 unsigned int shift = mc->shift;
4eaa9819 2840 int max = mc->max;
815ecf8d
JS		 2841 unsigned int mask = (1 << fls(max)) - 1;
2842 unsigned int invert = mc->invert;
e9cf7049 2843 unsigned int val;
97404f2e
MB		 2844 int connect, change;
2845 struct snd_soc_dapm_update update;
2b97eabc 2846
da602ab8 2847 if (snd_soc_volsw_is_stereo(mc))
eee5d7f9 2848 dev_warn(codec->dapm.dev,
30a6a1a4 2849 "ASoC: Control '%s' is stereo, which is not supported\n",
da602ab8
BT		 2850 kcontrol->id.name);
2851
2b97eabc 2852 val = (ucontrol->value.integer.value[0] & mask);
8a720718 2853 connect = !!val;
2b97eabc
RP		 2854
2855 if (invert)
a7a4ac86 2856 val = max - val;
2b97eabc 2857
3cd04343 2858 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2b97eabc 2859
57295073
LPC		 2860 dapm_kcontrol_set_value(kcontrol, val);
2861
2862 mask = mask << shift;
2863 val = val << shift;
2864
eee5d7f9 2865 change = snd_soc_test_bits(codec, reg, mask, val);
97404f2e 2866 if (change) {
ce6cfaf1
LPC		 2867 update.kcontrol = kcontrol;
2868 update.reg = reg;
2869 update.mask = mask;
2870 update.val = val;
97404f2e 2871
564c6504 2872 card->update = &update;
97404f2e 2873
95dd5cd6 2874 soc_dapm_mixer_update_power(card, kcontrol, connect);
fafd2176 2875
564c6504 2876 card->update = NULL;
283375ce
MB		 2877 }
2878
a73fb2df 2879 mutex_unlock(&card->dapm_mutex);
56a67834 2880 return change;
2b97eabc
RP		 2881}
2882EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw);
2883
2884/**
2885 * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback
2886 * @kcontrol: mixer control
ac11a2b3 2887 * @ucontrol: control element information
2b97eabc
RP		 2888 *
2889 * Callback to get the value of a dapm enumerated double mixer control.
2890 *
2891 * Returns 0 for success.
2892 */
2893int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol,
2894 struct snd_ctl_elem_value *ucontrol)
2895{
eee5d7f9 2896 struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol);
2b97eabc 2897 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
86767b7d 2898 unsigned int val;
2b97eabc 2899
eee5d7f9 2900 val = snd_soc_read(codec, e->reg);
86767b7d 2901 ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & e->mask;
2b97eabc
RP		 2902 if (e->shift_l != e->shift_r)
2903 ucontrol->value.enumerated.item[1] =
86767b7d 2904 (val >> e->shift_r) & e->mask;
2b97eabc
RP		 2905
2906 return 0;
2907}
2908EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double);
2909
2910/**
2911 * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback
2912 * @kcontrol: mixer control
ac11a2b3 2913 * @ucontrol: control element information
2b97eabc
RP		 2914 *
2915 * Callback to set the value of a dapm enumerated double mixer control.
2916 *
2917 * Returns 0 for success.
2918 */
2919int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol,
2920 struct snd_ctl_elem_value *ucontrol)
2921{
cf7c1de2 2922 struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol);
a73fb2df 2923 struct snd_soc_card *card = codec->card;
2b97eabc 2924 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
3a65577d 2925 unsigned int val, mux, change;
86767b7d 2926 unsigned int mask;
97404f2e 2927 struct snd_soc_dapm_update update;
2b97eabc 2928
f8ba0b7b 2929 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2b97eabc
RP		 2930 return -EINVAL;
2931 mux = ucontrol->value.enumerated.item[0];
2932 val = mux << e->shift_l;
86767b7d 2933 mask = e->mask << e->shift_l;
2b97eabc 2934 if (e->shift_l != e->shift_r) {
f8ba0b7b 2935 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2b97eabc
RP		 2936 return -EINVAL;
2937 val |= ucontrol->value.enumerated.item[1] << e->shift_r;
86767b7d 2938 mask |= e->mask << e->shift_r;
2b97eabc
RP		 2939 }
2940
3cd04343 2941 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
fafd2176 2942
eee5d7f9 2943 change = snd_soc_test_bits(codec, e->reg, mask, val);
fafd2176 2944 if (change) {
ce6cfaf1
LPC		 2945 update.kcontrol = kcontrol;
2946 update.reg = e->reg;
2947 update.mask = mask;
2948 update.val = val;
564c6504 2949 card->update = &update;
1642e3d4 2950
95dd5cd6 2951 soc_dapm_mux_update_power(card, kcontrol, mux, e);
1642e3d4 2952
564c6504 2953 card->update = NULL;
fafd2176 2954 }
2b97eabc 2955
a73fb2df 2956 mutex_unlock(&card->dapm_mutex);
97404f2e 2957 return change;
2b97eabc
RP		 2958}
2959EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double);
2960
d2b247a8
MB		 2961/**
2962 * snd_soc_dapm_get_enum_virt - Get virtual DAPM mux
2963 * @kcontrol: mixer control
2964 * @ucontrol: control element information
2965 *
2966 * Returns 0 for success.
2967 */
2968int snd_soc_dapm_get_enum_virt(struct snd_kcontrol *kcontrol,
2969 struct snd_ctl_elem_value *ucontrol)
2970{
cf7c1de2 2971 ucontrol->value.enumerated.item[0] = dapm_kcontrol_get_value(kcontrol);
d2b247a8
MB		 2972 return 0;
2973}
2974EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_virt);
2975
2976/**
2977 * snd_soc_dapm_put_enum_virt - Set virtual DAPM mux
2978 * @kcontrol: mixer control
2979 * @ucontrol: control element information
2980 *
2981 * Returns 0 for success.
2982 */
2983int snd_soc_dapm_put_enum_virt(struct snd_kcontrol *kcontrol,
2984 struct snd_ctl_elem_value *ucontrol)
2985{
cf7c1de2 2986 struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol);
a73fb2df 2987 struct snd_soc_card *card = codec->card;
cf7c1de2 2988 unsigned int value;
d2b247a8
MB		 2989 struct soc_enum *e =
2990 (struct soc_enum *)kcontrol->private_value;
2991 int change;
d2b247a8
MB		 2992
2993 if (ucontrol->value.enumerated.item[0] >= e->max)
2994 return -EINVAL;
2995
3cd04343 2996 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
d2b247a8 2997
cf7c1de2
LPC		 2998 value = ucontrol->value.enumerated.item[0];
2999 change = dapm_kcontrol_set_value(kcontrol, value);
3000 if (change)
3001 soc_dapm_mux_update_power(card, kcontrol, value, e);
d2b247a8 3002
a73fb2df 3003 mutex_unlock(&card->dapm_mutex);
56a67834 3004 return change;
d2b247a8
MB		 3005}
3006EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt);
3007
2e72f8e3
PU		 3008/**
3009 * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get
3010 * callback
3011 * @kcontrol: mixer control
3012 * @ucontrol: control element information
3013 *
3014 * Callback to get the value of a dapm semi enumerated double mixer control.
3015 *
3016 * Semi enumerated mixer: the enumerated items are referred as values. Can be
3017 * used for handling bitfield coded enumeration for example.
3018 *
3019 * Returns 0 for success.
3020 */
3021int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol *kcontrol,
3022 struct snd_ctl_elem_value *ucontrol)
3023{
eee5d7f9 3024 struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol);
74155556 3025 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
46f5822f 3026 unsigned int reg_val, val, mux;
2e72f8e3 3027
eee5d7f9 3028 reg_val = snd_soc_read(codec, e->reg);
2e72f8e3
PU		 3029 val = (reg_val >> e->shift_l) & e->mask;
3030 for (mux = 0; mux < e->max; mux++) {
3031 if (val == e->values[mux])
3032 break;
3033 }
3034 ucontrol->value.enumerated.item[0] = mux;
3035 if (e->shift_l != e->shift_r) {
3036 val = (reg_val >> e->shift_r) & e->mask;
3037 for (mux = 0; mux < e->max; mux++) {
3038 if (val == e->values[mux])
3039 break;
3040 }
3041 ucontrol->value.enumerated.item[1] = mux;
3042 }
3043
3044 return 0;
3045}
3046EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double);
3047
3048/**
3049 * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set
3050 * callback
3051 * @kcontrol: mixer control
3052 * @ucontrol: control element information
3053 *
3054 * Callback to set the value of a dapm semi enumerated double mixer control.
3055 *
3056 * Semi enumerated mixer: the enumerated items are referred as values. Can be
3057 * used for handling bitfield coded enumeration for example.
3058 *
3059 * Returns 0 for success.
3060 */
3061int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol,
3062 struct snd_ctl_elem_value *ucontrol)
3063{
cf7c1de2 3064 struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol);
a73fb2df 3065 struct snd_soc_card *card = codec->card;
74155556 3066 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
3a65577d 3067 unsigned int val, mux, change;
46f5822f 3068 unsigned int mask;
97404f2e 3069 struct snd_soc_dapm_update update;
2e72f8e3
PU		 3070
3071 if (ucontrol->value.enumerated.item[0] > e->max - 1)
3072 return -EINVAL;
3073 mux = ucontrol->value.enumerated.item[0];
3074 val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l;
3075 mask = e->mask << e->shift_l;
3076 if (e->shift_l != e->shift_r) {
3077 if (ucontrol->value.enumerated.item[1] > e->max - 1)
3078 return -EINVAL;
3079 val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r;
3080 mask |= e->mask << e->shift_r;
3081 }
3082
3cd04343 3083 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
fafd2176 3084
eee5d7f9 3085 change = snd_soc_test_bits(codec, e->reg, mask, val);
fafd2176 3086 if (change) {
ce6cfaf1
LPC		 3087 update.kcontrol = kcontrol;
3088 update.reg = e->reg;
3089 update.mask = mask;
3090 update.val = val;
564c6504 3091 card->update = &update;
1642e3d4 3092
95dd5cd6 3093 soc_dapm_mux_update_power(card, kcontrol, mux, e);
fafd2176 3094
564c6504 3095 card->update = NULL;
fafd2176 3096 }
2e72f8e3 3097
a73fb2df 3098 mutex_unlock(&card->dapm_mutex);
97404f2e 3099 return change;
2e72f8e3
PU		 3100}
3101EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double);
3102
8b37dbd2
MB		 3103/**
3104 * snd_soc_dapm_info_pin_switch - Info for a pin switch
3105 *
3106 * @kcontrol: mixer control
3107 * @uinfo: control element information
3108 *
3109 * Callback to provide information about a pin switch control.
3110 */
3111int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol,
3112 struct snd_ctl_elem_info *uinfo)
3113{
3114 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
3115 uinfo->count = 1;
3116 uinfo->value.integer.min = 0;
3117 uinfo->value.integer.max = 1;
3118
3119 return 0;
3120}
3121EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch);
3122
3123/**
3124 * snd_soc_dapm_get_pin_switch - Get information for a pin switch
3125 *
3126 * @kcontrol: mixer control
3127 * @ucontrol: Value
3128 */
3129int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol,
3130 struct snd_ctl_elem_value *ucontrol)
3131{
48a8c394 3132 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
8b37dbd2
MB		 3133 const char *pin = (const char *)kcontrol->private_value;
3134
3cd04343 3135 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
8b37dbd2
MB		 3136
3137 ucontrol->value.integer.value[0] =
48a8c394 3138 snd_soc_dapm_get_pin_status(&card->dapm, pin);
8b37dbd2 3139
a73fb2df 3140 mutex_unlock(&card->dapm_mutex);
8b37dbd2
MB		 3141
3142 return 0;
3143}
3144EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch);
3145
3146/**
3147 * snd_soc_dapm_put_pin_switch - Set information for a pin switch
3148 *
3149 * @kcontrol: mixer control
3150 * @ucontrol: Value
3151 */
3152int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol,
3153 struct snd_ctl_elem_value *ucontrol)
3154{
48a8c394 3155 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
8b37dbd2
MB		 3156 const char *pin = (const char *)kcontrol->private_value;
3157
3cd04343 3158 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
8b37dbd2
MB		 3159
3160 if (ucontrol->value.integer.value[0])
48a8c394 3161 snd_soc_dapm_enable_pin(&card->dapm, pin);
8b37dbd2 3162 else
48a8c394 3163 snd_soc_dapm_disable_pin(&card->dapm, pin);
8b37dbd2 3164
a73fb2df 3165 mutex_unlock(&card->dapm_mutex);
8b37dbd2 3166
a73fb2df 3167 snd_soc_dapm_sync(&card->dapm);
8b37dbd2
MB		 3168 return 0;
3169}
3170EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch);
3171
5ba06fc9
MB		 3172static struct snd_soc_dapm_widget *
3173snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
3174 const struct snd_soc_dapm_widget *widget)
2b97eabc
RP		 3175{
3176 struct snd_soc_dapm_widget *w;
62ea874a 3177 int ret;
2b97eabc
RP		 3178
3179 if ((w = dapm_cnew_widget(widget)) == NULL)
5ba06fc9 3180 return NULL;
2b97eabc 3181
62ea874a
MB		 3182 switch (w->id) {
3183 case snd_soc_dapm_regulator_supply:
a3cc056b
LG		 3184 w->regulator = devm_regulator_get(dapm->dev, w->name);
3185 if (IS_ERR(w->regulator)) {
3186 ret = PTR_ERR(w->regulator);
30a6a1a4 3187 dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
62ea874a 3188 w->name, ret);
5ba06fc9 3189 return NULL;
62ea874a 3190 }
8784c77a 3191
de9ba98b 3192 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
8784c77a
MB		 3193 ret = regulator_allow_bypass(w->regulator, true);
3194 if (ret != 0)
3195 dev_warn(w->dapm->dev,
3196 "ASoC: Failed to unbypass %s: %d\n",
3197 w->name, ret);
3198 }
62ea874a 3199 break;
d7e7eb91 3200 case snd_soc_dapm_clock_supply:
165961ef 3201#ifdef CONFIG_CLKDEV_LOOKUP
695594f1 3202 w->clk = devm_clk_get(dapm->dev, w->name);
d7e7eb91
OL		 3203 if (IS_ERR(w->clk)) {
3204 ret = PTR_ERR(w->clk);
30a6a1a4 3205 dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
d7e7eb91
OL		 3206 w->name, ret);
3207 return NULL;
3208 }
ec02995a
MB		 3209#else
3210 return NULL;
3211#endif
d7e7eb91 3212 break;
62ea874a
MB		 3213 default:
3214 break;
3215 }
2b97eabc 3216
88e8b9a8 3217 if (dapm->codec && dapm->codec->name_prefix)
2b581074
LPC		 3218 w->name = kasprintf(GFP_KERNEL, "%s %s",
3219 dapm->codec->name_prefix, widget->name);
3220 else
3221 w->name = kasprintf(GFP_KERNEL, "%s", widget->name);
3222
ead9b919
JN		 3223 if (w->name == NULL) {
3224 kfree(w);
5ba06fc9 3225 return NULL;
ead9b919 3226 }
ead9b919 3227
7ca3a18b
MB		 3228 switch (w->id) {
3229 case snd_soc_dapm_switch:
3230 case snd_soc_dapm_mixer:
3231 case snd_soc_dapm_mixer_named_ctl:
3232 w->power_check = dapm_generic_check_power;
3233 break;
3234 case snd_soc_dapm_mux:
3235 case snd_soc_dapm_virt_mux:
3236 case snd_soc_dapm_value_mux:
3237 w->power_check = dapm_generic_check_power;
3238 break;
4616274d 3239 case snd_soc_dapm_dai_out:
7ca3a18b
MB		 3240 w->power_check = dapm_adc_check_power;
3241 break;
4616274d 3242 case snd_soc_dapm_dai_in:
7ca3a18b
MB		 3243 w->power_check = dapm_dac_check_power;
3244 break;
63c69a6e
MB		 3245 case snd_soc_dapm_adc:
3246 case snd_soc_dapm_aif_out:
3247 case snd_soc_dapm_dac:
3248 case snd_soc_dapm_aif_in:
7ca3a18b
MB		 3249 case snd_soc_dapm_pga:
3250 case snd_soc_dapm_out_drv:
3251 case snd_soc_dapm_input:
3252 case snd_soc_dapm_output:
3253 case snd_soc_dapm_micbias:
3254 case snd_soc_dapm_spk:
3255 case snd_soc_dapm_hp:
3256 case snd_soc_dapm_mic:
3257 case snd_soc_dapm_line:
c74184ed 3258 case snd_soc_dapm_dai_link:
7ca3a18b
MB		 3259 w->power_check = dapm_generic_check_power;
3260 break;
3261 case snd_soc_dapm_supply:
62ea874a 3262 case snd_soc_dapm_regulator_supply:
d7e7eb91 3263 case snd_soc_dapm_clock_supply:
57295073 3264 case snd_soc_dapm_kcontrol:
7ca3a18b
MB		 3265 w->power_check = dapm_supply_check_power;
3266 break;
3267 default:
3268 w->power_check = dapm_always_on_check_power;
3269 break;
3270 }
3271
ce6120cc
LG		 3272 w->dapm = dapm;
3273 w->codec = dapm->codec;
b7950641 3274 w->platform = dapm->platform;
2b97eabc
RP		 3275 INIT_LIST_HEAD(&w->sources);
3276 INIT_LIST_HEAD(&w->sinks);
3277 INIT_LIST_HEAD(&w->list);
db432b41 3278 INIT_LIST_HEAD(&w->dirty);
97c866de 3279 list_add(&w->list, &dapm->card->widgets);
2b97eabc
RP		 3280
3281 /* machine layer set ups unconnected pins and insertions */
3282 w->connected = 1;
5ba06fc9 3283 return w;
2b97eabc 3284}
2b97eabc 3285
4ba1327a
MB		 3286/**
3287 * snd_soc_dapm_new_controls - create new dapm controls
ce6120cc 3288 * @dapm: DAPM context
4ba1327a
MB		 3289 * @widget: widget array
3290 * @num: number of widgets
3291 *
3292 * Creates new DAPM controls based upon the templates.
3293 *
3294 * Returns 0 for success else error.
3295 */
ce6120cc 3296int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm,
4ba1327a
MB		 3297 const struct snd_soc_dapm_widget *widget,
3298 int num)
3299{
5ba06fc9
MB		 3300 struct snd_soc_dapm_widget *w;
3301 int i;
60884c27 3302 int ret = 0;
4ba1327a 3303
a73fb2df 3304 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
4ba1327a 3305 for (i = 0; i < num; i++) {
5ba06fc9
MB		 3306 w = snd_soc_dapm_new_control(dapm, widget);
3307 if (!w) {
f7d41ae8 3308 dev_err(dapm->dev,
5ba06fc9
MB		 3309 "ASoC: Failed to create DAPM control %s\n",
3310 widget->name);
60884c27
DC		 3311 ret = -ENOMEM;
3312 break;
b8b33cb5 3313 }
4ba1327a
MB		 3314 widget++;
3315 }
a73fb2df 3316 mutex_unlock(&dapm->card->dapm_mutex);
60884c27 3317 return ret;
4ba1327a
MB		 3318}
3319EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls);
3320
c74184ed
MB		 3321static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w,
3322 struct snd_kcontrol *kcontrol, int event)
3323{
3324 struct snd_soc_dapm_path *source_p, *sink_p;
3325 struct snd_soc_dai *source, *sink;
3326 const struct snd_soc_pcm_stream *config = w->params;
3327 struct snd_pcm_substream substream;
9747cec2 3328 struct snd_pcm_hw_params *params = NULL;
c74184ed
MB		 3329 u64 fmt;
3330 int ret;
3331
3332 BUG_ON(!config);
3333 BUG_ON(list_empty(&w->sources) || list_empty(&w->sinks));
3334
3335 /* We only support a single source and sink, pick the first */
3336 source_p = list_first_entry(&w->sources, struct snd_soc_dapm_path,
3337 list_sink);
3338 sink_p = list_first_entry(&w->sinks, struct snd_soc_dapm_path,
3339 list_source);
3340
3341 BUG_ON(!source_p || !sink_p);
3342 BUG_ON(!sink_p->source || !source_p->sink);
3343 BUG_ON(!source_p->source || !sink_p->sink);
3344
3345 source = source_p->source->priv;
3346 sink = sink_p->sink->priv;
3347
3348 /* Be a little careful as we don't want to overflow the mask array */
3349 if (config->formats) {
3350 fmt = ffs(config->formats) - 1;
3351 } else {
30a6a1a4 3352 dev_warn(w->dapm->dev, "ASoC: Invalid format %llx specified\n",
c74184ed
MB		 3353 config->formats);
3354 fmt = 0;
3355 }
3356
3357 /* Currently very limited parameter selection */
9747cec2
MB		 3358 params = kzalloc(sizeof(*params), GFP_KERNEL);
3359 if (!params) {
3360 ret = -ENOMEM;
3361 goto out;
3362 }
3363 snd_mask_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), fmt);
c74184ed 3364
9747cec2 3365 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->min =
c74184ed 3366 config->rate_min;
9747cec2 3367 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->max =
c74184ed
MB		 3368 config->rate_max;
3369
9747cec2 3370 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->min
c74184ed 3371 = config->channels_min;
9747cec2 3372 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max
c74184ed
MB		 3373 = config->channels_max;
3374
3375 memset(&substream, 0, sizeof(substream));
3376
3377 switch (event) {
3378 case SND_SOC_DAPM_PRE_PMU:
3379 if (source->driver->ops && source->driver->ops->hw_params) {
3380 substream.stream = SNDRV_PCM_STREAM_CAPTURE;
3381 ret = source->driver->ops->hw_params(&substream,
9747cec2 3382 params, source);
c74184ed
MB		 3383 if (ret != 0) {
3384 dev_err(source->dev,
30a6a1a4 3385 "ASoC: hw_params() failed: %d\n", ret);
9747cec2 3386 goto out;
c74184ed
MB		 3387 }
3388 }
3389
3390 if (sink->driver->ops && sink->driver->ops->hw_params) {
3391 substream.stream = SNDRV_PCM_STREAM_PLAYBACK;
9747cec2 3392 ret = sink->driver->ops->hw_params(&substream, params,
c74184ed
MB		 3393 sink);
3394 if (ret != 0) {
3395 dev_err(sink->dev,
30a6a1a4 3396 "ASoC: hw_params() failed: %d\n", ret);
9747cec2 3397 goto out;
c74184ed
MB		 3398 }
3399 }
3400 break;
3401
3402 case SND_SOC_DAPM_POST_PMU:
da18396f
MB		 3403 ret = snd_soc_dai_digital_mute(sink, 0,
3404 SNDRV_PCM_STREAM_PLAYBACK);
c74184ed 3405 if (ret != 0 && ret != -ENOTSUPP)
30a6a1a4 3406 dev_warn(sink->dev, "ASoC: Failed to unmute: %d\n", ret);
9747cec2 3407 ret = 0;
c74184ed
MB		 3408 break;
3409
3410 case SND_SOC_DAPM_PRE_PMD:
da18396f
MB		 3411 ret = snd_soc_dai_digital_mute(sink, 1,
3412 SNDRV_PCM_STREAM_PLAYBACK);
c74184ed 3413 if (ret != 0 && ret != -ENOTSUPP)
30a6a1a4 3414 dev_warn(sink->dev, "ASoC: Failed to mute: %d\n", ret);
9747cec2 3415 ret = 0;
c74184ed
MB		 3416 break;
3417
3418 default:
3419 BUG();
3420 return -EINVAL;
3421 }
3422
9747cec2
MB		 3423out:
3424 kfree(params);
3425 return ret;
c74184ed
MB		 3426}
3427
3428int snd_soc_dapm_new_pcm(struct snd_soc_card *card,
3429 const struct snd_soc_pcm_stream *params,
3430 struct snd_soc_dapm_widget *source,
3431 struct snd_soc_dapm_widget *sink)
3432{
3433 struct snd_soc_dapm_route routes[2];
3434 struct snd_soc_dapm_widget template;
3435 struct snd_soc_dapm_widget *w;
3436 size_t len;
3437 char *link_name;
3438
3439 len = strlen(source->name) + strlen(sink->name) + 2;
3440 link_name = devm_kzalloc(card->dev, len, GFP_KERNEL);
3441 if (!link_name)
3442 return -ENOMEM;
3443 snprintf(link_name, len, "%s-%s", source->name, sink->name);
3444
3445 memset(&template, 0, sizeof(template));
3446 template.reg = SND_SOC_NOPM;
3447 template.id = snd_soc_dapm_dai_link;
3448 template.name = link_name;
3449 template.event = snd_soc_dai_link_event;
3450 template.event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
3451 SND_SOC_DAPM_PRE_PMD;
3452
30a6a1a4 3453 dev_dbg(card->dev, "ASoC: adding %s widget\n", link_name);
c74184ed
MB		 3454
3455 w = snd_soc_dapm_new_control(&card->dapm, &template);
3456 if (!w) {
30a6a1a4 3457 dev_err(card->dev, "ASoC: Failed to create %s widget\n",
c74184ed
MB		 3458 link_name);
3459 return -ENOMEM;
3460 }
3461
3462 w->params = params;
3463
3464 memset(&routes, 0, sizeof(routes));
3465
3466 routes[0].source = source->name;
3467 routes[0].sink = link_name;
3468 routes[1].source = link_name;
3469 routes[1].sink = sink->name;
3470
3471 return snd_soc_dapm_add_routes(&card->dapm, routes,
3472 ARRAY_SIZE(routes));
3473}
3474
888df395
MB		 3475int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context *dapm,
3476 struct snd_soc_dai *dai)
2b97eabc 3477{
888df395 3478 struct snd_soc_dapm_widget template;
2b97eabc
RP		 3479 struct snd_soc_dapm_widget *w;
3480
888df395
MB		 3481 WARN_ON(dapm->dev != dai->dev);
3482
3483 memset(&template, 0, sizeof(template));
3484 template.reg = SND_SOC_NOPM;
3485
3486 if (dai->driver->playback.stream_name) {
4616274d 3487 template.id = snd_soc_dapm_dai_in;
888df395
MB		 3488 template.name = dai->driver->playback.stream_name;
3489 template.sname = dai->driver->playback.stream_name;
3490
30a6a1a4 3491 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
888df395
MB		 3492 template.name);
3493
3494 w = snd_soc_dapm_new_control(dapm, &template);
3495 if (!w) {
30a6a1a4 3496 dev_err(dapm->dev, "ASoC: Failed to create %s widget\n",
888df395
MB		 3497 dai->driver->playback.stream_name);
3498 }
3499
3500 w->priv = dai;
3501 dai->playback_widget = w;
3502 }
3503
3504 if (dai->driver->capture.stream_name) {
4616274d 3505 template.id = snd_soc_dapm_dai_out;
888df395
MB		 3506 template.name = dai->driver->capture.stream_name;
3507 template.sname = dai->driver->capture.stream_name;
3508
30a6a1a4 3509 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
888df395
MB		 3510 template.name);
3511
3512 w = snd_soc_dapm_new_control(dapm, &template);
3513 if (!w) {
30a6a1a4 3514 dev_err(dapm->dev, "ASoC: Failed to create %s widget\n",
888df395
MB		 3515 dai->driver->capture.stream_name);
3516 }
3517
3518 w->priv = dai;
3519 dai->capture_widget = w;
3520 }
3521
3522 return 0;
3523}
3524
3525int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card)
3526{
3527 struct snd_soc_dapm_widget *dai_w, *w;
3528 struct snd_soc_dai *dai;
888df395
MB		 3529
3530 /* For each DAI widget... */
3531 list_for_each_entry(dai_w, &card->widgets, list) {
4616274d
MB		 3532 switch (dai_w->id) {
3533 case snd_soc_dapm_dai_in:
3534 case snd_soc_dapm_dai_out:
3535 break;
3536 default:
2b97eabc 3537 continue;
4616274d 3538 }
888df395
MB		 3539
3540 dai = dai_w->priv;
3541
3542 /* ...find all widgets with the same stream and link them */
3543 list_for_each_entry(w, &card->widgets, list) {
3544 if (w->dapm != dai_w->dapm)
3545 continue;
3546
4616274d
MB		 3547 switch (w->id) {
3548 case snd_soc_dapm_dai_in:
3549 case snd_soc_dapm_dai_out:
888df395 3550 continue;
4616274d
MB		 3551 default:
3552 break;
3553 }
888df395 3554
19c2c5f5 3555 if (!w->sname || !strstr(w->sname, dai_w->name))
888df395
MB		 3556 continue;
3557
3558 if (dai->driver->playback.stream_name &&
3559 strstr(w->sname,
3560 dai->driver->playback.stream_name)) {
888df395 3561 dev_dbg(dai->dev, "%s -> %s\n",
2553628e 3562 dai->playback_widget->name, w->name);
888df395 3563
2553628e
LPC		 3564 snd_soc_dapm_add_path(w->dapm,
3565 dai->playback_widget, w, NULL, NULL);
888df395
MB		 3566 }
3567
3568 if (dai->driver->capture.stream_name &&
3569 strstr(w->sname,
3570 dai->driver->capture.stream_name)) {
888df395 3571 dev_dbg(dai->dev, "%s -> %s\n",
2553628e 3572 w->name, dai->capture_widget->name);
888df395 3573
2553628e
LPC		 3574 snd_soc_dapm_add_path(w->dapm, w,
3575 dai->capture_widget, NULL, NULL);
2b97eabc
RP		 3576 }
3577 }
3578 }
2b97eabc 3579
888df395
MB		 3580 return 0;
3581}
64a648c2 3582
d9b0951b
LG		 3583static void soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
3584 int event)
2b97eabc 3585{
7bd3a6f3 3586
d9b0951b
LG		 3587 struct snd_soc_dapm_widget *w_cpu, *w_codec;
3588 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
3589 struct snd_soc_dai *codec_dai = rtd->codec_dai;
7bd3a6f3 3590
d9b0951b
LG		 3591 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
3592 w_cpu = cpu_dai->playback_widget;
3593 w_codec = codec_dai->playback_widget;
3594 } else {
3595 w_cpu = cpu_dai->capture_widget;
3596 w_codec = codec_dai->capture_widget;
3597 }
2b97eabc 3598
d9b0951b 3599 if (w_cpu) {
fe360685 3600
d9b0951b
LG		 3601 dapm_mark_dirty(w_cpu, "stream event");
3602
3603 switch (event) {
3604 case SND_SOC_DAPM_STREAM_START:
3605 w_cpu->active = 1;
3606 break;
3607 case SND_SOC_DAPM_STREAM_STOP:
3608 w_cpu->active = 0;
3609 break;
3610 case SND_SOC_DAPM_STREAM_SUSPEND:
3611 case SND_SOC_DAPM_STREAM_RESUME:
3612 case SND_SOC_DAPM_STREAM_PAUSE_PUSH:
3613 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE:
3614 break;
3615 }
3616 }
3617
3618 if (w_codec) {
3619
3620 dapm_mark_dirty(w_codec, "stream event");
3621
3622 switch (event) {
3623 case SND_SOC_DAPM_STREAM_START:
3624 w_codec->active = 1;
3625 break;
3626 case SND_SOC_DAPM_STREAM_STOP:
3627 w_codec->active = 0;
3628 break;
3629 case SND_SOC_DAPM_STREAM_SUSPEND:
3630 case SND_SOC_DAPM_STREAM_RESUME:
3631 case SND_SOC_DAPM_STREAM_PAUSE_PUSH:
3632 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE:
3633 break;
3634 }
2b97eabc 3635 }
2b97eabc 3636
95dd5cd6 3637 dapm_power_widgets(rtd->card, event);
ce6120cc
LG		 3638}
3639
3640/**
3641 * snd_soc_dapm_stream_event - send a stream event to the dapm core
3642 * @rtd: PCM runtime data
3643 * @stream: stream name
3644 * @event: stream event
3645 *
3646 * Sends a stream event to the dapm core. The core then makes any
3647 * necessary widget power changes.
3648 *
3649 * Returns 0 for success else error.
3650 */
d9b0951b
LG		 3651void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
3652 int event)
ce6120cc 3653{
a73fb2df 3654 struct snd_soc_card *card = rtd->card;
ce6120cc 3655
3cd04343 3656 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
d9b0951b 3657 soc_dapm_stream_event(rtd, stream, event);
a73fb2df 3658 mutex_unlock(&card->dapm_mutex);
2b97eabc 3659}
2b97eabc
RP		 3660
3661/**
a5302181 3662 * snd_soc_dapm_enable_pin - enable pin.
ce6120cc 3663 * @dapm: DAPM context
a5302181 3664 * @pin: pin name
2b97eabc 3665 *
74b8f955 3666 * Enables input/output pin and its parents or children widgets iff there is
a5302181
LG		 3667 * a valid audio route and active audio stream.
3668 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3669 * do any widget power switching.
2b97eabc 3670 */
ce6120cc 3671int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin)
2b97eabc 3672{
ce6120cc 3673 return snd_soc_dapm_set_pin(dapm, pin, 1);
a5302181
LG		 3674}
3675EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin);
2b97eabc 3676
da34183e
MB		 3677/**
3678 * snd_soc_dapm_force_enable_pin - force a pin to be enabled
ce6120cc 3679 * @dapm: DAPM context
da34183e
MB		 3680 * @pin: pin name
3681 *
3682 * Enables input/output pin regardless of any other state. This is
3683 * intended for use with microphone bias supplies used in microphone
3684 * jack detection.
3685 *
3686 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3687 * do any widget power switching.
3688 */
ce6120cc
LG		 3689int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm,
3690 const char *pin)
da34183e 3691{
91a5fca4 3692 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
da34183e 3693
91a5fca4 3694 if (!w) {
30a6a1a4 3695 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
91a5fca4 3696 return -EINVAL;
0d86733c
MB		 3697 }
3698
30a6a1a4 3699 dev_dbg(w->dapm->dev, "ASoC: force enable pin %s\n", pin);
91a5fca4
LPC		 3700 w->connected = 1;
3701 w->force = 1;
75c1f891 3702 dapm_mark_dirty(w, "force enable");
da34183e 3703
91a5fca4 3704 return 0;
da34183e
MB		 3705}
3706EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin);
3707
a5302181
LG		 3708/**
3709 * snd_soc_dapm_disable_pin - disable pin.
ce6120cc 3710 * @dapm: DAPM context
a5302181
LG		 3711 * @pin: pin name
3712 *
74b8f955 3713 * Disables input/output pin and its parents or children widgets.
a5302181
LG		 3714 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3715 * do any widget power switching.
3716 */
ce6120cc
LG		 3717int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm,
3718 const char *pin)
a5302181 3719{
ce6120cc 3720 return snd_soc_dapm_set_pin(dapm, pin, 0);
2b97eabc 3721}
a5302181 3722EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin);
2b97eabc 3723
5817b52a
MB		 3724/**
3725 * snd_soc_dapm_nc_pin - permanently disable pin.
ce6120cc 3726 * @dapm: DAPM context
5817b52a
MB		 3727 * @pin: pin name
3728 *
3729 * Marks the specified pin as being not connected, disabling it along
3730 * any parent or child widgets. At present this is identical to
3731 * snd_soc_dapm_disable_pin() but in future it will be extended to do
3732 * additional things such as disabling controls which only affect
3733 * paths through the pin.
3734 *
3735 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3736 * do any widget power switching.
3737 */
ce6120cc 3738int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin)
5817b52a 3739{
ce6120cc 3740 return snd_soc_dapm_set_pin(dapm, pin, 0);
5817b52a
MB		 3741}
3742EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin);
3743
eeec12bf 3744/**
a5302181 3745 * snd_soc_dapm_get_pin_status - get audio pin status
ce6120cc 3746 * @dapm: DAPM context
a5302181 3747 * @pin: audio signal pin endpoint (or start point)
eeec12bf 3748 *
a5302181 3749 * Get audio pin status - connected or disconnected.
eeec12bf 3750 *
a5302181 3751 * Returns 1 for connected otherwise 0.
eeec12bf 3752 */
ce6120cc
LG		 3753int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm,
3754 const char *pin)
eeec12bf 3755{
91a5fca4 3756 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
eeec12bf 3757
91a5fca4
LPC		 3758 if (w)
3759 return w->connected;
a68b38ad 3760
eeec12bf
GG		 3761 return 0;
3762}
a5302181 3763EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status);
eeec12bf 3764
1547aba9
MB		 3765/**
3766 * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint
ce6120cc 3767 * @dapm: DAPM context
1547aba9
MB		 3768 * @pin: audio signal pin endpoint (or start point)
3769 *
3770 * Mark the given endpoint or pin as ignoring suspend. When the
3771 * system is disabled a path between two endpoints flagged as ignoring
3772 * suspend will not be disabled. The path must already be enabled via
3773 * normal means at suspend time, it will not be turned on if it was not
3774 * already enabled.
3775 */
ce6120cc
LG		 3776int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm,
3777 const char *pin)
1547aba9 3778{
91a5fca4 3779 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, false);
1547aba9 3780
91a5fca4 3781 if (!w) {
30a6a1a4 3782 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
91a5fca4 3783 return -EINVAL;
1547aba9
MB		 3784 }
3785
91a5fca4
LPC		 3786 w->ignore_suspend = 1;
3787
3788 return 0;
1547aba9
MB		 3789}
3790EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend);
3791
1633281b
SW		 3792static bool snd_soc_dapm_widget_in_card_paths(struct snd_soc_card *card,
3793 struct snd_soc_dapm_widget *w)
3794{
3795 struct snd_soc_dapm_path *p;
3796
3797 list_for_each_entry(p, &card->paths, list) {
3798 if ((p->source == w) || (p->sink == w)) {
3799 dev_dbg(card->dev,
3800 "... Path %s(id:%d dapm:%p) - %s(id:%d dapm:%p)\n",
3801 p->source->name, p->source->id, p->source->dapm,
3802 p->sink->name, p->sink->id, p->sink->dapm);
3803
3804 /* Connected to something other than the codec */
3805 if (p->source->dapm != p->sink->dapm)
3806 return true;
3807 /*
3808 * Loopback connection from codec external pin to
3809 * codec external pin
3810 */
3811 if (p->sink->id == snd_soc_dapm_input) {
3812 switch (p->source->id) {
3813 case snd_soc_dapm_output:
3814 case snd_soc_dapm_micbias:
3815 return true;
3816 default:
3817 break;
3818 }
3819 }
3820 }
3821 }
3822
3823 return false;
3824}
3825
3826/**
3827 * snd_soc_dapm_auto_nc_codec_pins - call snd_soc_dapm_nc_pin for unused pins
3828 * @codec: The codec whose pins should be processed
3829 *
3830 * Automatically call snd_soc_dapm_nc_pin() for any external pins in the codec
3831 * which are unused. Pins are used if they are connected externally to the
3832 * codec, whether that be to some other device, or a loop-back connection to
3833 * the codec itself.
3834 */
3835void snd_soc_dapm_auto_nc_codec_pins(struct snd_soc_codec *codec)
3836{
3837 struct snd_soc_card *card = codec->card;
3838 struct snd_soc_dapm_context *dapm = &codec->dapm;
3839 struct snd_soc_dapm_widget *w;
3840
30a6a1a4 3841 dev_dbg(codec->dev, "ASoC: Auto NC: DAPMs: card:%p codec:%p\n",
1633281b
SW		 3842 &card->dapm, &codec->dapm);
3843
3844 list_for_each_entry(w, &card->widgets, list) {
3845 if (w->dapm != dapm)
3846 continue;
3847 switch (w->id) {
3848 case snd_soc_dapm_input:
3849 case snd_soc_dapm_output:
3850 case snd_soc_dapm_micbias:
30a6a1a4 3851 dev_dbg(codec->dev, "ASoC: Auto NC: Checking widget %s\n",
1633281b
SW		 3852 w->name);
3853 if (!snd_soc_dapm_widget_in_card_paths(card, w)) {
a094b80b 3854 dev_dbg(codec->dev,
1633281b
SW		 3855 "... Not in map; disabling\n");
3856 snd_soc_dapm_nc_pin(dapm, w->name);
3857 }
3858 break;
3859 default:
3860 break;
3861 }
3862 }
3863}
3864
2b97eabc
RP		 3865/**
3866 * snd_soc_dapm_free - free dapm resources
728a5222 3867 * @dapm: DAPM context
2b97eabc
RP		 3868 *
3869 * Free all dapm widgets and resources.
3870 */
ce6120cc 3871void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm)
2b97eabc 3872{
ce6120cc 3873 snd_soc_dapm_sys_remove(dapm->dev);
6c45e126 3874 dapm_debugfs_cleanup(dapm);
ce6120cc 3875 dapm_free_widgets(dapm);
7be31be8 3876 list_del(&dapm->list);
2b97eabc
RP		 3877}
3878EXPORT_SYMBOL_GPL(snd_soc_dapm_free);
3879
ce6120cc 3880static void soc_dapm_shutdown_codec(struct snd_soc_dapm_context *dapm)
51737470 3881{
01005a72 3882 struct snd_soc_card *card = dapm->card;
51737470
MB		 3883 struct snd_soc_dapm_widget *w;
3884 LIST_HEAD(down_list);
3885 int powerdown = 0;
3886
01005a72
LG		 3887 mutex_lock(&card->dapm_mutex);
3888
97c866de
JN		 3889 list_for_each_entry(w, &dapm->card->widgets, list) {
3890 if (w->dapm != dapm)
3891 continue;
51737470 3892 if (w->power) {
828a842f 3893 dapm_seq_insert(w, &down_list, false);
c2caa4da 3894 w->power = 0;
51737470
MB		 3895 powerdown = 1;
3896 }
3897 }
3898
3899 /* If there were no widgets to power down we're already in
3900 * standby.
3901 */
3902 if (powerdown) {
7679e42e
MB		 3903 if (dapm->bias_level == SND_SOC_BIAS_ON)
3904 snd_soc_dapm_set_bias_level(dapm,
3905 SND_SOC_BIAS_PREPARE);
95dd5cd6 3906 dapm_seq_run(card, &down_list, 0, false);
7679e42e
MB		 3907 if (dapm->bias_level == SND_SOC_BIAS_PREPARE)
3908 snd_soc_dapm_set_bias_level(dapm,
3909 SND_SOC_BIAS_STANDBY);
51737470 3910 }
01005a72
LG		 3911
3912 mutex_unlock(&card->dapm_mutex);
f0fba2ad
LG		 3913}
3914
3915/*
3916 * snd_soc_dapm_shutdown - callback for system shutdown
3917 */
3918void snd_soc_dapm_shutdown(struct snd_soc_card *card)
3919{
3920 struct snd_soc_codec *codec;
3921
445632ad 3922 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
ce6120cc 3923 soc_dapm_shutdown_codec(&codec->dapm);
7679e42e
MB		 3924 if (codec->dapm.bias_level == SND_SOC_BIAS_STANDBY)
3925 snd_soc_dapm_set_bias_level(&codec->dapm,
3926 SND_SOC_BIAS_OFF);
ce6120cc 3927 }
51737470
MB		 3928}
3929
2b97eabc 3930/* Module information */
d331124d 3931MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
2b97eabc
RP		 3932MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
3933MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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