projects / deliverable / linux.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc
[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 61 [snd_soc_dapm_pre] = 0,
62ea874a 62 [snd_soc_dapm_regulator_supply] = 1,
d7e7eb91 63 [snd_soc_dapm_clock_supply] = 1,
1dd275b6
MB		 64 [snd_soc_dapm_supply] = 2,
65 [snd_soc_dapm_micbias] = 3,
c74184ed 66 [snd_soc_dapm_dai_link] = 2,
1dd275b6
MB		 67 [snd_soc_dapm_dai_in] = 4,
68 [snd_soc_dapm_dai_out] = 4,
69 [snd_soc_dapm_aif_in] = 4,
70 [snd_soc_dapm_aif_out] = 4,
71 [snd_soc_dapm_mic] = 5,
72 [snd_soc_dapm_mux] = 6,
1dd275b6
MB		 73 [snd_soc_dapm_dac] = 7,
74 [snd_soc_dapm_switch] = 8,
75 [snd_soc_dapm_mixer] = 8,
76 [snd_soc_dapm_mixer_named_ctl] = 8,
77 [snd_soc_dapm_pga] = 9,
78 [snd_soc_dapm_adc] = 10,
79 [snd_soc_dapm_out_drv] = 11,
80 [snd_soc_dapm_hp] = 11,
81 [snd_soc_dapm_spk] = 11,
82 [snd_soc_dapm_line] = 11,
83 [snd_soc_dapm_kcontrol] = 12,
84 [snd_soc_dapm_post] = 13,
2b97eabc 85};
ca9c1aae 86
2b97eabc 87static int dapm_down_seq[] = {
38357ab2 88 [snd_soc_dapm_pre] = 0,
57295073
LPC		 89 [snd_soc_dapm_kcontrol] = 1,
90 [snd_soc_dapm_adc] = 2,
91 [snd_soc_dapm_hp] = 3,
92 [snd_soc_dapm_spk] = 3,
93 [snd_soc_dapm_line] = 3,
94 [snd_soc_dapm_out_drv] = 3,
38357ab2 95 [snd_soc_dapm_pga] = 4,
efc77e36 96 [snd_soc_dapm_switch] = 5,
38357ab2 97 [snd_soc_dapm_mixer_named_ctl] = 5,
e3d4dabd
MB		 98 [snd_soc_dapm_mixer] = 5,
99 [snd_soc_dapm_dac] = 6,
100 [snd_soc_dapm_mic] = 7,
101 [snd_soc_dapm_micbias] = 8,
102 [snd_soc_dapm_mux] = 9,
010ff262
MB		 103 [snd_soc_dapm_aif_in] = 10,
104 [snd_soc_dapm_aif_out] = 10,
4616274d
MB		 105 [snd_soc_dapm_dai_in] = 10,
106 [snd_soc_dapm_dai_out] = 10,
c74184ed 107 [snd_soc_dapm_dai_link] = 11,
c74184ed 108 [snd_soc_dapm_supply] = 12,
1dd275b6
MB		 109 [snd_soc_dapm_clock_supply] = 13,
110 [snd_soc_dapm_regulator_supply] = 13,
111 [snd_soc_dapm_post] = 14,
2b97eabc
RP		 112};
113
f9fa2b18
MB		 114static void dapm_assert_locked(struct snd_soc_dapm_context *dapm)
115{
116 if (dapm->card && dapm->card->instantiated)
117 lockdep_assert_held(&dapm->card->dapm_mutex);
118}
119
12ef193d 120static void pop_wait(u32 pop_time)
15e4c72f
MB		 121{
122 if (pop_time)
123 schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time));
124}
125
fd8d3bc0 126static void pop_dbg(struct device *dev, u32 pop_time, const char *fmt, ...)
15e4c72f
MB		 127{
128 va_list args;
fd8d3bc0 129 char *buf;
15e4c72f 130
fd8d3bc0
JN		 131 if (!pop_time)
132 return;
15e4c72f 133
fd8d3bc0
JN		 134 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
135 if (buf == NULL)
136 return;
15e4c72f 137
fd8d3bc0
JN		 138 va_start(args, fmt);
139 vsnprintf(buf, PAGE_SIZE, fmt, args);
9d01df06 140 dev_info(dev, "%s", buf);
15e4c72f 141 va_end(args);
fd8d3bc0
JN		 142
143 kfree(buf);
15e4c72f
MB		 144}
145
db432b41
MB		 146static bool dapm_dirty_widget(struct snd_soc_dapm_widget *w)
147{
148 return !list_empty(&w->dirty);
149}
150
492c0a18 151static void dapm_mark_dirty(struct snd_soc_dapm_widget *w, const char *reason)
db432b41 152{
f9fa2b18
MB		 153 dapm_assert_locked(w->dapm);
154
75c1f891
MB		 155 if (!dapm_dirty_widget(w)) {
156 dev_vdbg(w->dapm->dev, "Marking %s dirty due to %s\n",
157 w->name, reason);
db432b41 158 list_add_tail(&w->dirty, &w->dapm->card->dapm_dirty);
75c1f891 159 }
db432b41
MB		 160}
161
92a99ea4
LPC		 162/*
163 * dapm_widget_invalidate_input_paths() - Invalidate the cached number of input
164 * paths
165 * @w: The widget for which to invalidate the cached number of input paths
166 *
167 * The function resets the cached number of inputs for the specified widget and
168 * all widgets that can be reached via outgoing paths from the widget.
169 *
170 * This function must be called if the number of input paths for a widget might
171 * have changed. E.g. if the source state of a widget changes or a path is added
172 * or activated with the widget as the sink.
173 */
174static void dapm_widget_invalidate_input_paths(struct snd_soc_dapm_widget *w)
175{
176 struct snd_soc_dapm_widget *sink;
177 struct snd_soc_dapm_path *p;
178 LIST_HEAD(list);
179
180 dapm_assert_locked(w->dapm);
181
182 if (w->inputs == -1)
183 return;
184
185 w->inputs = -1;
186 list_add_tail(&w->work_list, &list);
187
188 list_for_each_entry(w, &list, work_list) {
189 list_for_each_entry(p, &w->sinks, list_source) {
190 if (p->is_supply || p->weak || !p->connect)
191 continue;
192 sink = p->sink;
193 if (sink->inputs != -1) {
194 sink->inputs = -1;
195 list_add_tail(&sink->work_list, &list);
196 }
197 }
198 }
199}
200
201/*
202 * dapm_widget_invalidate_output_paths() - Invalidate the cached number of
203 * output paths
204 * @w: The widget for which to invalidate the cached number of output paths
205 *
206 * Resets the cached number of outputs for the specified widget and all widgets
207 * that can be reached via incoming paths from the widget.
208 *
209 * This function must be called if the number of output paths for a widget might
210 * have changed. E.g. if the sink state of a widget changes or a path is added
211 * or activated with the widget as the source.
212 */
213static void dapm_widget_invalidate_output_paths(struct snd_soc_dapm_widget *w)
214{
215 struct snd_soc_dapm_widget *source;
216 struct snd_soc_dapm_path *p;
217 LIST_HEAD(list);
218
219 dapm_assert_locked(w->dapm);
220
221 if (w->outputs == -1)
222 return;
223
224 w->outputs = -1;
225 list_add_tail(&w->work_list, &list);
226
227 list_for_each_entry(w, &list, work_list) {
228 list_for_each_entry(p, &w->sources, list_sink) {
229 if (p->is_supply || p->weak || !p->connect)
230 continue;
231 source = p->source;
232 if (source->outputs != -1) {
233 source->outputs = -1;
234 list_add_tail(&source->work_list, &list);
235 }
236 }
237 }
238}
239
240/*
241 * dapm_path_invalidate() - Invalidates the cached number of inputs and outputs
242 * for the widgets connected to a path
243 * @p: The path to invalidate
244 *
245 * Resets the cached number of inputs for the sink of the path and the cached
246 * number of outputs for the source of the path.
247 *
248 * This function must be called when a path is added, removed or the connected
249 * state changes.
250 */
251static void dapm_path_invalidate(struct snd_soc_dapm_path *p)
252{
253 /*
254 * Weak paths or supply paths do not influence the number of input or
255 * output paths of their neighbors.
256 */
257 if (p->weak || p->is_supply)
258 return;
259
260 /*
261 * The number of connected endpoints is the sum of the number of
262 * connected endpoints of all neighbors. If a node with 0 connected
263 * endpoints is either connected or disconnected that sum won't change,
264 * so there is no need to re-check the path.
265 */
266 if (p->source->inputs != 0)
267 dapm_widget_invalidate_input_paths(p->sink);
268 if (p->sink->outputs != 0)
269 dapm_widget_invalidate_output_paths(p->source);
270}
271
8be4da29 272void dapm_mark_endpoints_dirty(struct snd_soc_card *card)
e2d32ff6 273{
e2d32ff6
MB		 274 struct snd_soc_dapm_widget *w;
275
276 mutex_lock(&card->dapm_mutex);
277
278 list_for_each_entry(w, &card->widgets, list) {
92a99ea4 279 if (w->is_sink || w->is_source) {
8be4da29 280 dapm_mark_dirty(w, "Rechecking endpoints");
92a99ea4
LPC		 281 if (w->is_sink)
282 dapm_widget_invalidate_output_paths(w);
283 if (w->is_source)
284 dapm_widget_invalidate_input_paths(w);
285 }
e2d32ff6
MB		 286 }
287
288 mutex_unlock(&card->dapm_mutex);
289}
8be4da29 290EXPORT_SYMBOL_GPL(dapm_mark_endpoints_dirty);
e2d32ff6 291
2b97eabc 292/* create a new dapm widget */
88cb4290 293static inline struct snd_soc_dapm_widget *dapm_cnew_widget(
2b97eabc
RP		 294 const struct snd_soc_dapm_widget *_widget)
295{
88cb4290 296 return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL);
2b97eabc
RP		 297}
298
e84357f7 299struct dapm_kcontrol_data {
cf7c1de2 300 unsigned int value;
57295073 301 struct snd_soc_dapm_widget *widget;
5106b92f 302 struct list_head paths;
2c75bdf3 303 struct snd_soc_dapm_widget_list *wlist;
e84357f7
LPC		 304};
305
306static int dapm_kcontrol_data_alloc(struct snd_soc_dapm_widget *widget,
307 struct snd_kcontrol *kcontrol)
308{
309 struct dapm_kcontrol_data *data;
57295073 310 struct soc_mixer_control *mc;
e84357f7 311
2c75bdf3 312 data = kzalloc(sizeof(*data), GFP_KERNEL);
e84357f7
LPC		 313 if (!data) {
314 dev_err(widget->dapm->dev,
315 "ASoC: can't allocate kcontrol data for %s\n",
316 widget->name);
317 return -ENOMEM;
318 }
319
5106b92f 320 INIT_LIST_HEAD(&data->paths);
e84357f7 321
57295073
LPC		 322 switch (widget->id) {
323 case snd_soc_dapm_switch:
324 case snd_soc_dapm_mixer:
325 case snd_soc_dapm_mixer_named_ctl:
326 mc = (struct soc_mixer_control *)kcontrol->private_value;
327
328 if (mc->autodisable) {
329 struct snd_soc_dapm_widget template;
330
331 memset(&template, 0, sizeof(template));
332 template.reg = mc->reg;
333 template.mask = (1 << fls(mc->max)) - 1;
334 template.shift = mc->shift;
335 if (mc->invert)
336 template.off_val = mc->max;
337 else
338 template.off_val = 0;
339 template.on_val = template.off_val;
340 template.id = snd_soc_dapm_kcontrol;
341 template.name = kcontrol->id.name;
342
2daabd78
LPC		 343 data->value = template.on_val;
344
57295073
LPC		 345 data->widget = snd_soc_dapm_new_control(widget->dapm,
346 &template);
347 if (!data->widget) {
348 kfree(data);
349 return -ENOMEM;
350 }
351 }
352 break;
353 default:
354 break;
355 }
356
e84357f7
LPC		 357 kcontrol->private_data = data;
358
359 return 0;
360}
361
362static void dapm_kcontrol_free(struct snd_kcontrol *kctl)
363{
364 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kctl);
2c75bdf3 365 kfree(data->wlist);
e84357f7
LPC		 366 kfree(data);
367}
368
369static struct snd_soc_dapm_widget_list *dapm_kcontrol_get_wlist(
370 const struct snd_kcontrol *kcontrol)
371{
372 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
373
2c75bdf3 374 return data->wlist;
e84357f7
LPC		 375}
376
377static int dapm_kcontrol_add_widget(struct snd_kcontrol *kcontrol,
378 struct snd_soc_dapm_widget *widget)
379{
380 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
2c75bdf3
LPC		 381 struct snd_soc_dapm_widget_list *new_wlist;
382 unsigned int n;
e84357f7 383
2c75bdf3
LPC		 384 if (data->wlist)
385 n = data->wlist->num_widgets + 1;
386 else
387 n = 1;
388
389 new_wlist = krealloc(data->wlist,
390 sizeof(*new_wlist) + sizeof(widget) * n, GFP_KERNEL);
391 if (!new_wlist)
e84357f7
LPC		 392 return -ENOMEM;
393
2c75bdf3
LPC		 394 new_wlist->widgets[n - 1] = widget;
395 new_wlist->num_widgets = n;
e84357f7 396
2c75bdf3 397 data->wlist = new_wlist;
e84357f7
LPC		 398
399 return 0;
400}
401
5106b92f
LPC		 402static void dapm_kcontrol_add_path(const struct snd_kcontrol *kcontrol,
403 struct snd_soc_dapm_path *path)
404{
405 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
406
407 list_add_tail(&path->list_kcontrol, &data->paths);
57295073
LPC		 408
409 if (data->widget) {
410 snd_soc_dapm_add_path(data->widget->dapm, data->widget,
411 path->source, NULL, NULL);
412 }
413}
414
415static bool dapm_kcontrol_is_powered(const struct snd_kcontrol *kcontrol)
416{
417 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
418
419 if (!data->widget)
420 return true;
421
422 return data->widget->power;
5106b92f
LPC		 423}
424
425static struct list_head *dapm_kcontrol_get_path_list(
426 const struct snd_kcontrol *kcontrol)
427{
428 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
429
430 return &data->paths;
431}
432
433#define dapm_kcontrol_for_each_path(path, kcontrol) \
434 list_for_each_entry(path, dapm_kcontrol_get_path_list(kcontrol), \
435 list_kcontrol)
436
5dc0158a 437unsigned int dapm_kcontrol_get_value(const struct snd_kcontrol *kcontrol)
cf7c1de2
LPC		 438{
439 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
440
441 return data->value;
442}
5dc0158a 443EXPORT_SYMBOL_GPL(dapm_kcontrol_get_value);
cf7c1de2
LPC		 444
445static bool dapm_kcontrol_set_value(const struct snd_kcontrol *kcontrol,
446 unsigned int value)
447{
448 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
449
450 if (data->value == value)
451 return false;
452
57295073
LPC		 453 if (data->widget)
454 data->widget->on_val = value;
455
cf7c1de2
LPC		 456 data->value = value;
457
458 return true;
459}
460
ce0fc93a
LPC		 461/**
462 * snd_soc_dapm_kcontrol_dapm() - Returns the dapm context associated to a
463 * kcontrol
464 * @kcontrol: The kcontrol
465 *
466 * Note: This function must only be used on kcontrols that are known to have
467 * been registered for a CODEC. Otherwise the behaviour is undefined.
468 */
469struct snd_soc_dapm_context *snd_soc_dapm_kcontrol_dapm(
470 struct snd_kcontrol *kcontrol)
471{
472 return dapm_kcontrol_get_wlist(kcontrol)->widgets[0]->dapm;
473}
474EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_dapm);
475
6c120e19
LG		 476static void dapm_reset(struct snd_soc_card *card)
477{
478 struct snd_soc_dapm_widget *w;
479
f9fa2b18
MB		 480 lockdep_assert_held(&card->dapm_mutex);
481
6c120e19
LG		 482 memset(&card->dapm_stats, 0, sizeof(card->dapm_stats));
483
484 list_for_each_entry(w, &card->widgets, list) {
39eb5fd1 485 w->new_power = w->power;
6c120e19 486 w->power_checked = false;
6c120e19
LG		 487 }
488}
489
94f99c87
LPC		 490static const char *soc_dapm_prefix(struct snd_soc_dapm_context *dapm)
491{
492 if (!dapm->component)
493 return NULL;
494 return dapm->component->name_prefix;
495}
496
ce0fc93a 497static int soc_dapm_read(struct snd_soc_dapm_context *dapm, int reg,
f7d3c170 498 unsigned int *value)
0445bdf4 499{
ce0fc93a 500 if (!dapm->component)
e2c330b9 501 return -EIO;
ce0fc93a 502 return snd_soc_component_read(dapm->component, reg, value);
49575fb5
LG		 503}
504
ce0fc93a 505static int soc_dapm_update_bits(struct snd_soc_dapm_context *dapm,
e2c330b9 506 int reg, unsigned int mask, unsigned int value)
49575fb5 507{
ce0fc93a 508 if (!dapm->component)
e2c330b9 509 return -EIO;
fcf6c5ea
MB		 510 return snd_soc_component_update_bits(dapm->component, reg,
511 mask, value);
49575fb5
LG		 512}
513
ce0fc93a
LPC		 514static int soc_dapm_test_bits(struct snd_soc_dapm_context *dapm,
515 int reg, unsigned int mask, unsigned int value)
516{
517 if (!dapm->component)
518 return -EIO;
519 return snd_soc_component_test_bits(dapm->component, reg, mask, value);
520}
521
eb270e98
MB		 522static void soc_dapm_async_complete(struct snd_soc_dapm_context *dapm)
523{
e2c330b9
LPC		 524 if (dapm->component)
525 snd_soc_component_async_complete(dapm->component);
0445bdf4
LG		 526}
527
452c5eaa
MB		 528/**
529 * snd_soc_dapm_set_bias_level - set the bias level for the system
ed5a4c47 530 * @dapm: DAPM context
452c5eaa
MB		 531 * @level: level to configure
532 *
533 * Configure the bias (power) levels for the SoC audio device.
534 *
535 * Returns 0 for success else error.
536 */
ed5a4c47 537static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm,
ce6120cc 538 enum snd_soc_bias_level level)
452c5eaa 539{
ed5a4c47 540 struct snd_soc_card *card = dapm->card;
452c5eaa
MB		 541 int ret = 0;
542
84e90930
MB		 543 trace_snd_soc_bias_level_start(card, level);
544
f0fba2ad 545 if (card && card->set_bias_level)
d4c6005f 546 ret = card->set_bias_level(card, dapm, level);
171ec6b0
MB		 547 if (ret != 0)
548 goto out;
549
68f831c2
LPC		 550 if (dapm->set_bias_level)
551 ret = dapm->set_bias_level(dapm, level);
552 else if (!card || dapm != &card->dapm)
4123128e
LG		 553 dapm->bias_level = level;
554
171ec6b0
MB		 555 if (ret != 0)
556 goto out;
557
558 if (card && card->set_bias_level_post)
d4c6005f 559 ret = card->set_bias_level_post(card, dapm, level);
171ec6b0 560out:
84e90930
MB		 561 trace_snd_soc_bias_level_done(card, level);
562
452c5eaa
MB		 563 return ret;
564}
565
74b8f955 566/* connect mux widget to its interconnecting audio paths */
ce6120cc 567static int dapm_connect_mux(struct snd_soc_dapm_context *dapm,
5fe5b767 568 struct snd_soc_dapm_path *path, const char *control_name)
2b97eabc 569{
5fe5b767 570 const struct snd_kcontrol_new *kcontrol = &path->sink->kcontrol_news[0];
2b97eabc 571 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
234c0b8f 572 unsigned int val, item;
2b97eabc 573 int i;
24ff33ac 574
234c0b8f 575 if (e->reg != SND_SOC_NOPM) {
ce0fc93a 576 soc_dapm_read(dapm, e->reg, &val);
234c0b8f
LPC		 577 val = (val >> e->shift_l) & e->mask;
578 item = snd_soc_enum_val_to_item(e, val);
579 } else {
24ff33ac
DP		 580 /* since a virtual mux has no backing registers to
581 * decide which path to connect, it will try to match
582 * with the first enumeration. This is to ensure
583 * that the default mux choice (the first) will be
584 * correctly powered up during initialization.
585 */
234c0b8f 586 item = 0;
24ff33ac 587 }
2e72f8e3 588
9a8d38db 589 for (i = 0; i < e->items; i++) {
2b97eabc 590 if (!(strcmp(control_name, e->texts[i]))) {
98ad73c9 591 path->name = e->texts[i];
234c0b8f
LPC		 592 if (i == item)
593 path->connect = 1;
594 else
595 path->connect = 0;
2b97eabc
RP		 596 return 0;
597 }
598 }
599
600 return -ENODEV;
601}
602
234c0b8f 603/* set up initial codec paths */
5fe5b767 604static void dapm_set_mixer_path_status(struct snd_soc_dapm_path *p, int i)
234c0b8f
LPC		 605{
606 struct soc_mixer_control *mc = (struct soc_mixer_control *)
5fe5b767 607 p->sink->kcontrol_news[i].private_value;
234c0b8f
LPC		 608 unsigned int reg = mc->reg;
609 unsigned int shift = mc->shift;
610 unsigned int max = mc->max;
611 unsigned int mask = (1 << fls(max)) - 1;
612 unsigned int invert = mc->invert;
613 unsigned int val;
614
615 if (reg != SND_SOC_NOPM) {
5fe5b767 616 soc_dapm_read(p->sink->dapm, reg, &val);
234c0b8f
LPC		 617 val = (val >> shift) & mask;
618 if (invert)
619 val = max - val;
620 p->connect = !!val;
621 } else {
622 p->connect = 0;
623 }
624}
625
74b8f955 626/* connect mixer widget to its interconnecting audio paths */
ce6120cc 627static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm,
2b97eabc
RP		 628 struct snd_soc_dapm_path *path, const char *control_name)
629{
630 int i;
631
632 /* search for mixer kcontrol */
5fe5b767
LPC		 633 for (i = 0; i < path->sink->num_kcontrols; i++) {
634 if (!strcmp(control_name, path->sink->kcontrol_news[i].name)) {
635 path->name = path->sink->kcontrol_news[i].name;
636 dapm_set_mixer_path_status(path, i);
2b97eabc
RP		 637 return 0;
638 }
639 }
640 return -ENODEV;
641}
642
af46800b 643static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context *dapm,
1007da06 644 struct snd_soc_dapm_widget *kcontrolw,
af46800b
SW		 645 const struct snd_kcontrol_new *kcontrol_new,
646 struct snd_kcontrol **kcontrol)
647{
648 struct snd_soc_dapm_widget *w;
649 int i;
650
651 *kcontrol = NULL;
652
653 list_for_each_entry(w, &dapm->card->widgets, list) {
1007da06
SW		 654 if (w == kcontrolw || w->dapm != kcontrolw->dapm)
655 continue;
af46800b
SW		 656 for (i = 0; i < w->num_kcontrols; i++) {
657 if (&w->kcontrol_news[i] == kcontrol_new) {
658 if (w->kcontrols)
659 *kcontrol = w->kcontrols[i];
660 return 1;
661 }
662 }
663 }
664
665 return 0;
666}
667
85762e71
SW		 668/*
669 * Determine if a kcontrol is shared. If it is, look it up. If it isn't,
670 * create it. Either way, add the widget into the control's widget list
671 */
672static int dapm_create_or_share_mixmux_kcontrol(struct snd_soc_dapm_widget *w,
946d92a1 673 int kci)
2b97eabc 674{
4b80b8c2 675 struct snd_soc_dapm_context *dapm = w->dapm;
12ea2c78 676 struct snd_card *card = dapm->card->snd_card;
efb7ac3f 677 const char *prefix;
85762e71
SW		 678 size_t prefix_len;
679 int shared;
680 struct snd_kcontrol *kcontrol;
85762e71 681 bool wname_in_long_name, kcname_in_long_name;
e5092c96 682 char *long_name = NULL;
85762e71 683 const char *name;
e5092c96 684 int ret = 0;
efb7ac3f 685
94f99c87 686 prefix = soc_dapm_prefix(dapm);
3e5ff4df
MB		 687 if (prefix)
688 prefix_len = strlen(prefix) + 1;
689 else
690 prefix_len = 0;
691
85762e71
SW		 692 shared = dapm_is_shared_kcontrol(dapm, w, &w->kcontrol_news[kci],
693 &kcontrol);
2b97eabc 694
85762e71
SW		 695 if (!kcontrol) {
696 if (shared) {
697 wname_in_long_name = false;
698 kcname_in_long_name = true;
699 } else {
700 switch (w->id) {
701 case snd_soc_dapm_switch:
702 case snd_soc_dapm_mixer:
703 wname_in_long_name = true;
704 kcname_in_long_name = true;
705 break;
706 case snd_soc_dapm_mixer_named_ctl:
707 wname_in_long_name = false;
708 kcname_in_long_name = true;
709 break;
710 case snd_soc_dapm_mux:
85762e71
SW		 711 wname_in_long_name = true;
712 kcname_in_long_name = false;
713 break;
714 default:
85762e71 715 return -EINVAL;
82cd8764 716 }
85762e71
SW		 717 }
718
719 if (wname_in_long_name && kcname_in_long_name) {
85762e71
SW		 720 /*
721 * The control will get a prefix from the control
722 * creation process but we're also using the same
723 * prefix for widgets so cut the prefix off the
724 * front of the widget name.
ca9c1aae 725 */
2b581074 726 long_name = kasprintf(GFP_KERNEL, "%s %s",
85762e71
SW		 727 w->name + prefix_len,
728 w->kcontrol_news[kci].name);
e84357f7 729 if (long_name == NULL)
2b581074 730 return -ENOMEM;
85762e71
SW		 731
732 name = long_name;
733 } else if (wname_in_long_name) {
734 long_name = NULL;
735 name = w->name + prefix_len;
736 } else {
737 long_name = NULL;
738 name = w->kcontrol_news[kci].name;
739 }
ca9c1aae 740
e84357f7 741 kcontrol = snd_soc_cnew(&w->kcontrol_news[kci], NULL, name,
85762e71 742 prefix);
e5092c96
DM		 743 if (!kcontrol) {
744 ret = -ENOMEM;
745 goto exit_free;
746 }
747
9356e9d5 748 kcontrol->private_free = dapm_kcontrol_free;
e84357f7
LPC		 749
750 ret = dapm_kcontrol_data_alloc(w, kcontrol);
751 if (ret) {
752 snd_ctl_free_one(kcontrol);
e5092c96 753 goto exit_free;
e84357f7
LPC		 754 }
755
85762e71
SW		 756 ret = snd_ctl_add(card, kcontrol);
757 if (ret < 0) {
758 dev_err(dapm->dev,
759 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
760 w->name, name, ret);
e5092c96 761 goto exit_free;
85762e71 762 }
85762e71 763 }
2b97eabc 764
2c75bdf3 765 ret = dapm_kcontrol_add_widget(kcontrol, w);
e5092c96
DM		 766 if (ret == 0)
767 w->kcontrols[kci] = kcontrol;
2c75bdf3 768
e5092c96
DM		 769exit_free:
770 kfree(long_name);
ca9c1aae 771
e5092c96 772 return ret;
85762e71 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
98407efc
LPC		 828 list_for_each_entry(path, &w->sources, list_sink) {
829 if (path->name)
830 dapm_kcontrol_add_path(w->kcontrols[0], path);
831 }
2b97eabc 832
af46800b 833 return 0;
2b97eabc
RP		 834}
835
836/* create new dapm volume control */
4b80b8c2 837static int dapm_new_pga(struct snd_soc_dapm_widget *w)
2b97eabc 838{
a6c65736 839 if (w->num_kcontrols)
f7d41ae8 840 dev_err(w->dapm->dev,
30a6a1a4 841 "ASoC: PGA controls not supported: '%s'\n", w->name);
2b97eabc 842
a6c65736 843 return 0;
2b97eabc
RP		 844}
845
c6615082
NO		 846/* create new dapm dai link control */
847static int dapm_new_dai_link(struct snd_soc_dapm_widget *w)
848{
849 int i, ret;
850 struct snd_kcontrol *kcontrol;
851 struct snd_soc_dapm_context *dapm = w->dapm;
852 struct snd_card *card = dapm->card->snd_card;
853
854 /* create control for links with > 1 config */
855 if (w->num_params <= 1)
856 return 0;
857
858 /* add kcontrol */
859 for (i = 0; i < w->num_kcontrols; i++) {
860 kcontrol = snd_soc_cnew(&w->kcontrol_news[i], w,
861 w->name, NULL);
862 ret = snd_ctl_add(card, kcontrol);
863 if (ret < 0) {
864 dev_err(dapm->dev,
865 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
866 w->name, w->kcontrol_news[i].name, ret);
867 return ret;
868 }
869 kcontrol->private_data = w;
870 w->kcontrols[i] = kcontrol;
871 }
872
873 return 0;
874}
875
9949788b
MB		 876/* We implement power down on suspend by checking the power state of
877 * the ALSA card - when we are suspending the ALSA state for the card
878 * is set to D3.
879 */
880static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget)
881{
12ea2c78 882 int level = snd_power_get_state(widget->dapm->card->snd_card);
9949788b 883
f0fba2ad 884 switch (level) {
9949788b
MB		 885 case SNDRV_CTL_POWER_D3hot:
886 case SNDRV_CTL_POWER_D3cold:
1547aba9 887 if (widget->ignore_suspend)
30a6a1a4 888 dev_dbg(widget->dapm->dev, "ASoC: %s ignoring suspend\n",
f7d41ae8 889 widget->name);
1547aba9 890 return widget->ignore_suspend;
9949788b
MB		 891 default:
892 return 1;
893 }
894}
895
ec2e3031
LG		 896/* add widget to list if it's not already in the list */
897static int dapm_list_add_widget(struct snd_soc_dapm_widget_list **list,
898 struct snd_soc_dapm_widget *w)
899{
900 struct snd_soc_dapm_widget_list *wlist;
901 int wlistsize, wlistentries, i;
902
903 if (*list == NULL)
904 return -EINVAL;
905
906 wlist = *list;
907
908 /* is this widget already in the list */
909 for (i = 0; i < wlist->num_widgets; i++) {
910 if (wlist->widgets[i] == w)
911 return 0;
912 }
913
914 /* allocate some new space */
915 wlistentries = wlist->num_widgets + 1;
916 wlistsize = sizeof(struct snd_soc_dapm_widget_list) +
917 wlistentries * sizeof(struct snd_soc_dapm_widget *);
918 *list = krealloc(wlist, wlistsize, GFP_KERNEL);
919 if (*list == NULL) {
30a6a1a4 920 dev_err(w->dapm->dev, "ASoC: can't allocate widget list for %s\n",
ec2e3031
LG		 921 w->name);
922 return -ENOMEM;
923 }
924 wlist = *list;
925
926 /* insert the widget */
30a6a1a4 927 dev_dbg(w->dapm->dev, "ASoC: added %s in widget list pos %d\n",
ec2e3031
LG		 928 w->name, wlist->num_widgets);
929
930 wlist->widgets[wlist->num_widgets] = w;
931 wlist->num_widgets++;
932 return 1;
933}
934
2b97eabc
RP		 935/*
936 * Recursively check for a completed path to an active or physically connected
937 * output widget. Returns number of complete paths.
938 */
ec2e3031
LG		 939static int is_connected_output_ep(struct snd_soc_dapm_widget *widget,
940 struct snd_soc_dapm_widget_list **list)
2b97eabc
RP		 941{
942 struct snd_soc_dapm_path *path;
943 int con = 0;
944
024dc078
MB		 945 if (widget->outputs >= 0)
946 return widget->outputs;
947
de02d078
MB		 948 DAPM_UPDATE_STAT(widget, path_checks);
949
6dd98b0a
LPC		 950 if (widget->is_sink && widget->connected) {
951 widget->outputs = snd_soc_dapm_suspend_check(widget);
952 return widget->outputs;
2b97eabc
RP		 953 }
954
955 list_for_each_entry(path, &widget->sinks, list_source) {
e56235e0
MB		 956 DAPM_UPDATE_STAT(widget, neighbour_checks);
957
c1862c8b 958 if (path->weak || path->is_supply)
bf3a9e13
MB		 959 continue;
960
8af294b4
MB		 961 if (path->walking)
962 return 1;
963
ec2e3031
LG		 964 trace_snd_soc_dapm_output_path(widget, path);
965
7ddd4cd5 966 if (path->connect) {
8af294b4 967 path->walking = 1;
ec2e3031
LG		 968
969 /* do we need to add this widget to the list ? */
970 if (list) {
971 int err;
972 err = dapm_list_add_widget(list, path->sink);
973 if (err < 0) {
30a6a1a4
LG		 974 dev_err(widget->dapm->dev,
975 "ASoC: could not add widget %s\n",
ec2e3031 976 widget->name);
8af294b4 977 path->walking = 0;
ec2e3031
LG		 978 return con;
979 }
980 }
981
982 con += is_connected_output_ep(path->sink, list);
8af294b4
MB		 983
984 path->walking = 0;
2b97eabc
RP		 985 }
986 }
987
024dc078
MB		 988 widget->outputs = con;
989
2b97eabc
RP		 990 return con;
991}
992
993/*
994 * Recursively check for a completed path to an active or physically connected
995 * input widget. Returns number of complete paths.
996 */
ec2e3031
LG		 997static int is_connected_input_ep(struct snd_soc_dapm_widget *widget,
998 struct snd_soc_dapm_widget_list **list)
2b97eabc
RP		 999{
1000 struct snd_soc_dapm_path *path;
1001 int con = 0;
1002
024dc078
MB		 1003 if (widget->inputs >= 0)
1004 return widget->inputs;
1005
de02d078
MB		 1006 DAPM_UPDATE_STAT(widget, path_checks);
1007
6dd98b0a
LPC		 1008 if (widget->is_source && widget->connected) {
1009 widget->inputs = snd_soc_dapm_suspend_check(widget);
1010 return widget->inputs;
2b97eabc
RP		 1011 }
1012
1013 list_for_each_entry(path, &widget->sources, list_sink) {
e56235e0
MB		 1014 DAPM_UPDATE_STAT(widget, neighbour_checks);
1015
c1862c8b 1016 if (path->weak || path->is_supply)
bf3a9e13
MB		 1017 continue;
1018
8af294b4
MB		 1019 if (path->walking)
1020 return 1;
1021
ec2e3031
LG		 1022 trace_snd_soc_dapm_input_path(widget, path);
1023
7ddd4cd5 1024 if (path->connect) {
8af294b4 1025 path->walking = 1;
ec2e3031
LG		 1026
1027 /* do we need to add this widget to the list ? */
1028 if (list) {
1029 int err;
90c6ce0d 1030 err = dapm_list_add_widget(list, path->source);
ec2e3031 1031 if (err < 0) {
30a6a1a4
LG		 1032 dev_err(widget->dapm->dev,
1033 "ASoC: could not add widget %s\n",
ec2e3031 1034 widget->name);
8af294b4 1035 path->walking = 0;
ec2e3031
LG		 1036 return con;
1037 }
1038 }
1039
1040 con += is_connected_input_ep(path->source, list);
8af294b4
MB		 1041
1042 path->walking = 0;
2b97eabc
RP		 1043 }
1044 }
1045
024dc078
MB		 1046 widget->inputs = con;
1047
2b97eabc
RP		 1048 return con;
1049}
1050
ec2e3031
LG		 1051/**
1052 * snd_soc_dapm_get_connected_widgets - query audio path and it's widgets.
1053 * @dai: the soc DAI.
1054 * @stream: stream direction.
1055 * @list: list of active widgets for this stream.
1056 *
1057 * Queries DAPM graph as to whether an valid audio stream path exists for
1058 * the initial stream specified by name. This takes into account
1059 * current mixer and mux kcontrol settings. Creates list of valid widgets.
1060 *
1061 * Returns the number of valid paths or negative error.
1062 */
1063int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai *dai, int stream,
1064 struct snd_soc_dapm_widget_list **list)
1065{
313665b9 1066 struct snd_soc_card *card = dai->component->card;
92a99ea4 1067 struct snd_soc_dapm_widget *w;
ec2e3031
LG		 1068 int paths;
1069
1070 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
92a99ea4
LPC		 1071
1072 /*
1073 * For is_connected_{output,input}_ep fully discover the graph we need
1074 * to reset the cached number of inputs and outputs.
1075 */
1076 list_for_each_entry(w, &card->widgets, list) {
1077 w->inputs = -1;
1078 w->outputs = -1;
1079 }
ec2e3031 1080
130897ac 1081 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
ec2e3031 1082 paths = is_connected_output_ep(dai->playback_widget, list);
130897ac 1083 else
d298caae 1084 paths = is_connected_input_ep(dai->capture_widget, list);
ec2e3031
LG		 1085
1086 trace_snd_soc_dapm_connected(paths, stream);
ec2e3031
LG		 1087 mutex_unlock(&card->dapm_mutex);
1088
1089 return paths;
1090}
1091
62ea874a
MB		 1092/*
1093 * Handler for regulator supply widget.
1094 */
1095int dapm_regulator_event(struct snd_soc_dapm_widget *w,
1096 struct snd_kcontrol *kcontrol, int event)
1097{
c05b84d1
MB		 1098 int ret;
1099
eb270e98
MB		 1100 soc_dapm_async_complete(w->dapm);
1101
c05b84d1 1102 if (SND_SOC_DAPM_EVENT_ON(event)) {
de9ba98b 1103 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
8784c77a 1104 ret = regulator_allow_bypass(w->regulator, false);
c05b84d1
MB		 1105 if (ret != 0)
1106 dev_warn(w->dapm->dev,
30686c35 1107 "ASoC: Failed to unbypass %s: %d\n",
c05b84d1
MB		 1108 w->name, ret);
1109 }
1110
a3cc056b 1111 return regulator_enable(w->regulator);
c05b84d1 1112 } else {
de9ba98b 1113 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
8784c77a 1114 ret = regulator_allow_bypass(w->regulator, true);
c05b84d1
MB		 1115 if (ret != 0)
1116 dev_warn(w->dapm->dev,
30686c35 1117 "ASoC: Failed to bypass %s: %d\n",
c05b84d1
MB		 1118 w->name, ret);
1119 }
1120
a3cc056b 1121 return regulator_disable_deferred(w->regulator, w->shift);
c05b84d1 1122 }
62ea874a
MB		 1123}
1124EXPORT_SYMBOL_GPL(dapm_regulator_event);
1125
d7e7eb91
OL		 1126/*
1127 * Handler for clock supply widget.
1128 */
1129int dapm_clock_event(struct snd_soc_dapm_widget *w,
1130 struct snd_kcontrol *kcontrol, int event)
1131{
1132 if (!w->clk)
1133 return -EIO;
1134
eb270e98
MB		 1135 soc_dapm_async_complete(w->dapm);
1136
ec02995a 1137#ifdef CONFIG_HAVE_CLK
d7e7eb91 1138 if (SND_SOC_DAPM_EVENT_ON(event)) {
37c1b927 1139 return clk_prepare_enable(w->clk);
d7e7eb91 1140 } else {
37c1b927 1141 clk_disable_unprepare(w->clk);
d7e7eb91
OL		 1142 return 0;
1143 }
ec02995a 1144#endif
98b3cf12 1145 return 0;
d7e7eb91
OL		 1146}
1147EXPORT_SYMBOL_GPL(dapm_clock_event);
1148
d805002b
MB		 1149static int dapm_widget_power_check(struct snd_soc_dapm_widget *w)
1150{
9b8a83b2
MB		 1151 if (w->power_checked)
1152 return w->new_power;
1153
d805002b 1154 if (w->force)
9b8a83b2 1155 w->new_power = 1;
d805002b 1156 else
9b8a83b2
MB		 1157 w->new_power = w->power_check(w);
1158
1159 w->power_checked = true;
1160
1161 return w->new_power;
d805002b
MB		 1162}
1163
cd0f2d47
MB		 1164/* Generic check to see if a widget should be powered.
1165 */
1166static int dapm_generic_check_power(struct snd_soc_dapm_widget *w)
1167{
1168 int in, out;
1169
de02d078
MB		 1170 DAPM_UPDATE_STAT(w, power_checks);
1171
ec2e3031 1172 in = is_connected_input_ep(w, NULL);
ec2e3031 1173 out = is_connected_output_ep(w, NULL);
cd0f2d47
MB		 1174 return out != 0 && in != 0;
1175}
1176
246d0a17
MB		 1177/* Check to see if a power supply is needed */
1178static int dapm_supply_check_power(struct snd_soc_dapm_widget *w)
1179{
1180 struct snd_soc_dapm_path *path;
246d0a17 1181
de02d078
MB		 1182 DAPM_UPDATE_STAT(w, power_checks);
1183
246d0a17
MB		 1184 /* Check if one of our outputs is connected */
1185 list_for_each_entry(path, &w->sinks, list_source) {
a8fdac83
MB		 1186 DAPM_UPDATE_STAT(w, neighbour_checks);
1187
bf3a9e13
MB		 1188 if (path->weak)
1189 continue;
1190
215edda3
MB		 1191 if (path->connected &&
1192 !path->connected(path->source, path->sink))
1193 continue;
1194
f68d7e16
MB		 1195 if (dapm_widget_power_check(path->sink))
1196 return 1;
246d0a17
MB		 1197 }
1198
f68d7e16 1199 return 0;
246d0a17
MB		 1200}
1201
35c64bca
MB		 1202static int dapm_always_on_check_power(struct snd_soc_dapm_widget *w)
1203{
1204 return 1;
1205}
1206
38357ab2
MB		 1207static int dapm_seq_compare(struct snd_soc_dapm_widget *a,
1208 struct snd_soc_dapm_widget *b,
828a842f 1209 bool power_up)
42aa3418 1210{
828a842f
MB		 1211 int *sort;
1212
1213 if (power_up)
1214 sort = dapm_up_seq;
1215 else
1216 sort = dapm_down_seq;
1217
38357ab2
MB		 1218 if (sort[a->id] != sort[b->id])
1219 return sort[a->id] - sort[b->id];
20e4859d
MB		 1220 if (a->subseq != b->subseq) {
1221 if (power_up)
1222 return a->subseq - b->subseq;
1223 else
1224 return b->subseq - a->subseq;
1225 }
b22ead2a
MB		 1226 if (a->reg != b->reg)
1227 return a->reg - b->reg;
84dab567
MB		 1228 if (a->dapm != b->dapm)
1229 return (unsigned long)a->dapm - (unsigned long)b->dapm;
42aa3418 1230
38357ab2
MB		 1231 return 0;
1232}
42aa3418 1233
38357ab2
MB		 1234/* Insert a widget in order into a DAPM power sequence. */
1235static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget,
1236 struct list_head *list,
828a842f 1237 bool power_up)
38357ab2
MB		 1238{
1239 struct snd_soc_dapm_widget *w;
1240
1241 list_for_each_entry(w, list, power_list)
828a842f 1242 if (dapm_seq_compare(new_widget, w, power_up) < 0) {
38357ab2
MB		 1243 list_add_tail(&new_widget->power_list, &w->power_list);
1244 return;
1245 }
1246
1247 list_add_tail(&new_widget->power_list, list);
1248}
1249
95dd5cd6 1250static void dapm_seq_check_event(struct snd_soc_card *card,
68f89ad8
MB		 1251 struct snd_soc_dapm_widget *w, int event)
1252{
68f89ad8
MB		 1253 const char *ev_name;
1254 int power, ret;
1255
1256 switch (event) {
1257 case SND_SOC_DAPM_PRE_PMU:
1258 ev_name = "PRE_PMU";
1259 power = 1;
1260 break;
1261 case SND_SOC_DAPM_POST_PMU:
1262 ev_name = "POST_PMU";
1263 power = 1;
1264 break;
1265 case SND_SOC_DAPM_PRE_PMD:
1266 ev_name = "PRE_PMD";
1267 power = 0;
1268 break;
1269 case SND_SOC_DAPM_POST_PMD:
1270 ev_name = "POST_PMD";
1271 power = 0;
1272 break;
80114129
MB		 1273 case SND_SOC_DAPM_WILL_PMU:
1274 ev_name = "WILL_PMU";
1275 power = 1;
1276 break;
1277 case SND_SOC_DAPM_WILL_PMD:
1278 ev_name = "WILL_PMD";
1279 power = 0;
1280 break;
68f89ad8 1281 default:
a6ed0608 1282 WARN(1, "Unknown event %d\n", event);
68f89ad8
MB		 1283 return;
1284 }
1285
39eb5fd1 1286 if (w->new_power != power)
68f89ad8
MB		 1287 return;
1288
1289 if (w->event && (w->event_flags & event)) {
95dd5cd6 1290 pop_dbg(w->dapm->dev, card->pop_time, "pop test : %s %s\n",
68f89ad8 1291 w->name, ev_name);
eb270e98 1292 soc_dapm_async_complete(w->dapm);
84e90930 1293 trace_snd_soc_dapm_widget_event_start(w, event);
68f89ad8 1294 ret = w->event(w, NULL, event);
84e90930 1295 trace_snd_soc_dapm_widget_event_done(w, event);
68f89ad8 1296 if (ret < 0)
95dd5cd6 1297 dev_err(w->dapm->dev, "ASoC: %s: %s event failed: %d\n",
68f89ad8
MB		 1298 ev_name, w->name, ret);
1299 }
1300}
1301
b22ead2a 1302/* Apply the coalesced changes from a DAPM sequence */
95dd5cd6 1303static void dapm_seq_run_coalesced(struct snd_soc_card *card,
b22ead2a 1304 struct list_head *pending)
163cac06 1305{
ce0fc93a 1306 struct snd_soc_dapm_context *dapm;
68f89ad8 1307 struct snd_soc_dapm_widget *w;
de9ba98b 1308 int reg;
b22ead2a
MB		 1309 unsigned int value = 0;
1310 unsigned int mask = 0;
b22ead2a 1311
ce0fc93a
LPC		 1312 w = list_first_entry(pending, struct snd_soc_dapm_widget, power_list);
1313 reg = w->reg;
1314 dapm = w->dapm;
b22ead2a
MB		 1315
1316 list_for_each_entry(w, pending, power_list) {
ce0fc93a 1317 WARN_ON(reg != w->reg || dapm != w->dapm);
39eb5fd1 1318 w->power = w->new_power;
b22ead2a 1319
de9ba98b
LPC		 1320 mask |= w->mask << w->shift;
1321 if (w->power)
1322 value |= w->on_val << w->shift;
b22ead2a 1323 else
de9ba98b 1324 value |= w->off_val << w->shift;
b22ead2a 1325
ce0fc93a 1326 pop_dbg(dapm->dev, card->pop_time,
b22ead2a
MB		 1327 "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
1328 w->name, reg, value, mask);
81628103 1329
68f89ad8 1330 /* Check for events */
95dd5cd6
LPC		 1331 dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMU);
1332 dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMD);
81628103
MB		 1333 }
1334
1335 if (reg >= 0) {
29376bc7
MB		 1336 /* Any widget will do, they should all be updating the
1337 * same register.
1338 */
29376bc7 1339
ce0fc93a 1340 pop_dbg(dapm->dev, card->pop_time,
81628103 1341 "pop test : Applying 0x%x/0x%x to %x in %dms\n",
3a45b867
JN		 1342 value, mask, reg, card->pop_time);
1343 pop_wait(card->pop_time);
ce0fc93a 1344 soc_dapm_update_bits(dapm, reg, mask, value);
b22ead2a
MB		 1345 }
1346
81628103 1347 list_for_each_entry(w, pending, power_list) {
95dd5cd6
LPC		 1348 dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMU);
1349 dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMD);
81628103 1350 }
b22ead2a 1351}
42aa3418 1352
b22ead2a
MB		 1353/* Apply a DAPM power sequence.
1354 *
1355 * We walk over a pre-sorted list of widgets to apply power to. In
1356 * order to minimise the number of writes to the device required
1357 * multiple widgets will be updated in a single write where possible.
1358 * Currently anything that requires more than a single write is not
1359 * handled.
1360 */
95dd5cd6
LPC		 1361static void dapm_seq_run(struct snd_soc_card *card,
1362 struct list_head *list, int event, bool power_up)
b22ead2a
MB		 1363{
1364 struct snd_soc_dapm_widget *w, *n;
eb270e98 1365 struct snd_soc_dapm_context *d;
b22ead2a
MB		 1366 LIST_HEAD(pending);
1367 int cur_sort = -1;
20e4859d 1368 int cur_subseq = -1;
b22ead2a 1369 int cur_reg = SND_SOC_NOPM;
7be31be8 1370 struct snd_soc_dapm_context *cur_dapm = NULL;
474b62d6 1371 int ret, i;
828a842f
MB		 1372 int *sort;
1373
1374 if (power_up)
1375 sort = dapm_up_seq;
1376 else
1377 sort = dapm_down_seq;
163cac06 1378
b22ead2a
MB		 1379 list_for_each_entry_safe(w, n, list, power_list) {
1380 ret = 0;
1381
1382 /* Do we need to apply any queued changes? */
7be31be8 1383 if (sort[w->id] != cur_sort || w->reg != cur_reg ||
20e4859d 1384 w->dapm != cur_dapm || w->subseq != cur_subseq) {
b22ead2a 1385 if (!list_empty(&pending))
95dd5cd6 1386 dapm_seq_run_coalesced(card, &pending);
b22ead2a 1387
474b62d6
MB		 1388 if (cur_dapm && cur_dapm->seq_notifier) {
1389 for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
1390 if (sort[i] == cur_sort)
1391 cur_dapm->seq_notifier(cur_dapm,
f85a9e0d
MB		 1392 i,
1393 cur_subseq);
474b62d6
MB		 1394 }
1395
eb270e98
MB		 1396 if (cur_dapm && w->dapm != cur_dapm)
1397 soc_dapm_async_complete(cur_dapm);
1398
b22ead2a
MB		 1399 INIT_LIST_HEAD(&pending);
1400 cur_sort = -1;
b0b3e6f8 1401 cur_subseq = INT_MIN;
b22ead2a 1402 cur_reg = SND_SOC_NOPM;
7be31be8 1403 cur_dapm = NULL;
b22ead2a
MB		 1404 }
1405
163cac06
MB		 1406 switch (w->id) {
1407 case snd_soc_dapm_pre:
1408 if (!w->event)
b22ead2a
MB		 1409 list_for_each_entry_safe_continue(w, n, list,
1410 power_list);
163cac06 1411
b22ead2a 1412 if (event == SND_SOC_DAPM_STREAM_START)
163cac06
MB		 1413 ret = w->event(w,
1414 NULL, SND_SOC_DAPM_PRE_PMU);
b22ead2a 1415 else if (event == SND_SOC_DAPM_STREAM_STOP)
163cac06
MB		 1416 ret = w->event(w,
1417 NULL, SND_SOC_DAPM_PRE_PMD);
163cac06
MB		 1418 break;
1419
1420 case snd_soc_dapm_post:
1421 if (!w->event)
b22ead2a
MB		 1422 list_for_each_entry_safe_continue(w, n, list,
1423 power_list);
163cac06 1424
b22ead2a 1425 if (event == SND_SOC_DAPM_STREAM_START)
163cac06
MB		 1426 ret = w->event(w,
1427 NULL, SND_SOC_DAPM_POST_PMU);
b22ead2a 1428 else if (event == SND_SOC_DAPM_STREAM_STOP)
163cac06
MB		 1429 ret = w->event(w,
1430 NULL, SND_SOC_DAPM_POST_PMD);
163cac06
MB		 1431 break;
1432
b22ead2a 1433 default:
81628103
MB		 1434 /* Queue it up for application */
1435 cur_sort = sort[w->id];
20e4859d 1436 cur_subseq = w->subseq;
81628103 1437 cur_reg = w->reg;
7be31be8 1438 cur_dapm = w->dapm;
81628103
MB		 1439 list_move(&w->power_list, &pending);
1440 break;
163cac06 1441 }
b22ead2a
MB		 1442
1443 if (ret < 0)
f7d41ae8 1444 dev_err(w->dapm->dev,
30a6a1a4 1445 "ASoC: Failed to apply widget power: %d\n", ret);
6ea31b9f 1446 }
b22ead2a
MB		 1447
1448 if (!list_empty(&pending))
95dd5cd6 1449 dapm_seq_run_coalesced(card, &pending);
474b62d6
MB		 1450
1451 if (cur_dapm && cur_dapm->seq_notifier) {
1452 for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
1453 if (sort[i] == cur_sort)
1454 cur_dapm->seq_notifier(cur_dapm,
f85a9e0d 1455 i, cur_subseq);
474b62d6 1456 }
eb270e98
MB		 1457
1458 list_for_each_entry(d, &card->dapm_list, list) {
1459 soc_dapm_async_complete(d);
1460 }
42aa3418
MB		 1461}
1462
95dd5cd6 1463static void dapm_widget_update(struct snd_soc_card *card)
97404f2e 1464{
95dd5cd6 1465 struct snd_soc_dapm_update *update = card->update;
ce6cfaf1
LPC		 1466 struct snd_soc_dapm_widget_list *wlist;
1467 struct snd_soc_dapm_widget *w = NULL;
1468 unsigned int wi;
97404f2e
MB		 1469 int ret;
1470
57295073 1471 if (!update || !dapm_kcontrol_is_powered(update->kcontrol))
97404f2e
MB		 1472 return;
1473
e84357f7 1474 wlist = dapm_kcontrol_get_wlist(update->kcontrol);
97404f2e 1475
ce6cfaf1
LPC		 1476 for (wi = 0; wi < wlist->num_widgets; wi++) {
1477 w = wlist->widgets[wi];
1478
1479 if (w->event && (w->event_flags & SND_SOC_DAPM_PRE_REG)) {
1480 ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG);
1481 if (ret != 0)
95dd5cd6 1482 dev_err(w->dapm->dev, "ASoC: %s DAPM pre-event failed: %d\n",
ce6cfaf1
LPC		 1483 w->name, ret);
1484 }
97404f2e
MB		 1485 }
1486
ce6cfaf1
LPC		 1487 if (!w)
1488 return;
1489
ce0fc93a
LPC		 1490 ret = soc_dapm_update_bits(w->dapm, update->reg, update->mask,
1491 update->val);
97404f2e 1492 if (ret < 0)
95dd5cd6 1493 dev_err(w->dapm->dev, "ASoC: %s DAPM update failed: %d\n",
30a6a1a4 1494 w->name, ret);
97404f2e 1495
ce6cfaf1
LPC		 1496 for (wi = 0; wi < wlist->num_widgets; wi++) {
1497 w = wlist->widgets[wi];
1498
1499 if (w->event && (w->event_flags & SND_SOC_DAPM_POST_REG)) {
1500 ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG);
1501 if (ret != 0)
95dd5cd6 1502 dev_err(w->dapm->dev, "ASoC: %s DAPM post-event failed: %d\n",
ce6cfaf1
LPC		 1503 w->name, ret);
1504 }
97404f2e
MB		 1505 }
1506}
1507
9d0624a7
MB		 1508/* Async callback run prior to DAPM sequences - brings to _PREPARE if
1509 * they're changing state.
1510 */
1511static void dapm_pre_sequence_async(void *data, async_cookie_t cookie)
1512{
1513 struct snd_soc_dapm_context *d = data;
1514 int ret;
1515
56fba41f
MB		 1516 /* If we're off and we're not supposed to be go into STANDBY */
1517 if (d->bias_level == SND_SOC_BIAS_OFF &&
1518 d->target_bias_level != SND_SOC_BIAS_OFF) {
f1aac484
MB		 1519 if (d->dev)
1520 pm_runtime_get_sync(d->dev);
1521
9d0624a7
MB		 1522 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1523 if (ret != 0)
1524 dev_err(d->dev,
30a6a1a4 1525 "ASoC: Failed to turn on bias: %d\n", ret);
9d0624a7
MB		 1526 }
1527
ce85a4d7
LPC		 1528 /* Prepare for a transition to ON or away from ON */
1529 if ((d->target_bias_level == SND_SOC_BIAS_ON &&
1530 d->bias_level != SND_SOC_BIAS_ON) ||
1531 (d->target_bias_level != SND_SOC_BIAS_ON &&
1532 d->bias_level == SND_SOC_BIAS_ON)) {
9d0624a7
MB		 1533 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE);
1534 if (ret != 0)
1535 dev_err(d->dev,
30a6a1a4 1536 "ASoC: Failed to prepare bias: %d\n", ret);
9d0624a7
MB		 1537 }
1538}
1539
1540/* Async callback run prior to DAPM sequences - brings to their final
1541 * state.
1542 */
1543static void dapm_post_sequence_async(void *data, async_cookie_t cookie)
1544{
1545 struct snd_soc_dapm_context *d = data;
1546 int ret;
1547
1548 /* If we just powered the last thing off drop to standby bias */
56fba41f
MB		 1549 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1550 (d->target_bias_level == SND_SOC_BIAS_STANDBY ||
1551 d->target_bias_level == SND_SOC_BIAS_OFF)) {
9d0624a7
MB		 1552 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1553 if (ret != 0)
30a6a1a4 1554 dev_err(d->dev, "ASoC: Failed to apply standby bias: %d\n",
9d0624a7
MB		 1555 ret);
1556 }
97404f2e 1557
9d0624a7 1558 /* If we're in standby and can support bias off then do that */
56fba41f
MB		 1559 if (d->bias_level == SND_SOC_BIAS_STANDBY &&
1560 d->target_bias_level == SND_SOC_BIAS_OFF) {
9d0624a7
MB		 1561 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF);
1562 if (ret != 0)
30a6a1a4
LG		 1563 dev_err(d->dev, "ASoC: Failed to turn off bias: %d\n",
1564 ret);
f1aac484
MB		 1565
1566 if (d->dev)
fb644e9c 1567 pm_runtime_put(d->dev);
9d0624a7
MB		 1568 }
1569
1570 /* If we just powered up then move to active bias */
56fba41f
MB		 1571 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1572 d->target_bias_level == SND_SOC_BIAS_ON) {
9d0624a7
MB		 1573 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON);
1574 if (ret != 0)
30a6a1a4 1575 dev_err(d->dev, "ASoC: Failed to apply active bias: %d\n",
9d0624a7
MB		 1576 ret);
1577 }
1578}
97404f2e 1579
fe4fda5d
MB		 1580static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget *peer,
1581 bool power, bool connect)
1582{
1583 /* If a connection is being made or broken then that update
1584 * will have marked the peer dirty, otherwise the widgets are
1585 * not connected and this update has no impact. */
1586 if (!connect)
1587 return;
1588
1589 /* If the peer is already in the state we're moving to then we
1590 * won't have an impact on it. */
1591 if (power != peer->power)
75c1f891 1592 dapm_mark_dirty(peer, "peer state change");
fe4fda5d
MB		 1593}
1594
05623c43
MB		 1595static void dapm_widget_set_power(struct snd_soc_dapm_widget *w, bool power,
1596 struct list_head *up_list,
1597 struct list_head *down_list)
1598{
db432b41
MB		 1599 struct snd_soc_dapm_path *path;
1600
05623c43
MB		 1601 if (w->power == power)
1602 return;
1603
1604 trace_snd_soc_dapm_widget_power(w, power);
1605
db432b41 1606 /* If we changed our power state perhaps our neigbours changed
fe4fda5d 1607 * also.
db432b41 1608 */
7ddd4cd5
LPC		 1609 list_for_each_entry(path, &w->sources, list_sink)
1610 dapm_widget_set_peer_power(path->source, power, path->connect);
1611
6dd98b0a
LPC		 1612 /* Supplies can't affect their outputs, only their inputs */
1613 if (!w->is_supply) {
7ddd4cd5
LPC		 1614 list_for_each_entry(path, &w->sinks, list_source)
1615 dapm_widget_set_peer_power(path->sink, power,
1616 path->connect);
db432b41
MB		 1617 }
1618
05623c43
MB		 1619 if (power)
1620 dapm_seq_insert(w, up_list, true);
1621 else
1622 dapm_seq_insert(w, down_list, false);
05623c43
MB		 1623}
1624
7c81beb0
MB		 1625static void dapm_power_one_widget(struct snd_soc_dapm_widget *w,
1626 struct list_head *up_list,
1627 struct list_head *down_list)
1628{
7c81beb0
MB		 1629 int power;
1630
1631 switch (w->id) {
1632 case snd_soc_dapm_pre:
1633 dapm_seq_insert(w, down_list, false);
1634 break;
1635 case snd_soc_dapm_post:
1636 dapm_seq_insert(w, up_list, true);
1637 break;
1638
1639 default:
d805002b 1640 power = dapm_widget_power_check(w);
7c81beb0 1641
05623c43 1642 dapm_widget_set_power(w, power, up_list, down_list);
7c81beb0
MB		 1643 break;
1644 }
1645}
1646
86dbf2ac
LPC		 1647static bool dapm_idle_bias_off(struct snd_soc_dapm_context *dapm)
1648{
1649 if (dapm->idle_bias_off)
1650 return true;
1651
1652 switch (snd_power_get_state(dapm->card->snd_card)) {
1653 case SNDRV_CTL_POWER_D3hot:
1654 case SNDRV_CTL_POWER_D3cold:
1655 return dapm->suspend_bias_off;
1656 default:
1657 break;
1658 }
1659
1660 return false;
1661}
1662
2b97eabc
RP		 1663/*
1664 * Scan each dapm widget for complete audio path.
1665 * A complete path is a route that has valid endpoints i.e.:-
1666 *
1667 * o DAC to output pin.
1668 * o Input Pin to ADC.
1669 * o Input pin to Output pin (bypass, sidetone)
1670 * o DAC to ADC (loopback).
1671 */
95dd5cd6 1672static int dapm_power_widgets(struct snd_soc_card *card, int event)
2b97eabc
RP		 1673{
1674 struct snd_soc_dapm_widget *w;
7be31be8 1675 struct snd_soc_dapm_context *d;
291f3bbc
MB		 1676 LIST_HEAD(up_list);
1677 LIST_HEAD(down_list);
2955b47d 1678 ASYNC_DOMAIN_EXCLUSIVE(async_domain);
56fba41f 1679 enum snd_soc_bias_level bias;
6d3ddc81 1680
f9fa2b18
MB		 1681 lockdep_assert_held(&card->dapm_mutex);
1682
84e90930
MB		 1683 trace_snd_soc_dapm_start(card);
1684
56fba41f 1685 list_for_each_entry(d, &card->dapm_list, list) {
86dbf2ac 1686 if (dapm_idle_bias_off(d))
497098be
MB		 1687 d->target_bias_level = SND_SOC_BIAS_OFF;
1688 else
1689 d->target_bias_level = SND_SOC_BIAS_STANDBY;
56fba41f 1690 }
7be31be8 1691
6c120e19 1692 dapm_reset(card);
9b8a83b2 1693
6d3ddc81 1694 /* Check which widgets we need to power and store them in
db432b41
MB		 1695 * lists indicating if they should be powered up or down. We
1696 * only check widgets that have been flagged as dirty but note
1697 * that new widgets may be added to the dirty list while we
1698 * iterate.
6d3ddc81 1699 */
db432b41 1700 list_for_each_entry(w, &card->dapm_dirty, dirty) {
7c81beb0 1701 dapm_power_one_widget(w, &up_list, &down_list);
2b97eabc
RP		 1702 }
1703
f9de6d74 1704 list_for_each_entry(w, &card->widgets, list) {
0ff97ebf
MB		 1705 switch (w->id) {
1706 case snd_soc_dapm_pre:
1707 case snd_soc_dapm_post:
1708 /* These widgets always need to be powered */
1709 break;
1710 default:
1711 list_del_init(&w->dirty);
1712 break;
1713 }
db432b41 1714
39eb5fd1 1715 if (w->new_power) {
f9de6d74
MB		 1716 d = w->dapm;
1717
1718 /* Supplies and micbiases only bring the
1719 * context up to STANDBY as unless something
1720 * else is active and passing audio they
afe62367
MB		 1721 * generally don't require full power. Signal
1722 * generators are virtual pins and have no
1723 * power impact themselves.
f9de6d74
MB		 1724 */
1725 switch (w->id) {
afe62367 1726 case snd_soc_dapm_siggen:
da83fea6 1727 case snd_soc_dapm_vmid:
afe62367 1728 break;
f9de6d74 1729 case snd_soc_dapm_supply:
62ea874a 1730 case snd_soc_dapm_regulator_supply:
d7e7eb91 1731 case snd_soc_dapm_clock_supply:
f9de6d74
MB		 1732 case snd_soc_dapm_micbias:
1733 if (d->target_bias_level < SND_SOC_BIAS_STANDBY)
1734 d->target_bias_level = SND_SOC_BIAS_STANDBY;
1735 break;
1736 default:
1737 d->target_bias_level = SND_SOC_BIAS_ON;
1738 break;
1739 }
1740 }
1741
1742 }
1743
85a843c5
MB		 1744 /* Force all contexts in the card to the same bias state if
1745 * they're not ground referenced.
1746 */
56fba41f 1747 bias = SND_SOC_BIAS_OFF;
52ba67bf 1748 list_for_each_entry(d, &card->dapm_list, list)
56fba41f
MB		 1749 if (d->target_bias_level > bias)
1750 bias = d->target_bias_level;
52ba67bf 1751 list_for_each_entry(d, &card->dapm_list, list)
86dbf2ac 1752 if (!dapm_idle_bias_off(d))
85a843c5 1753 d->target_bias_level = bias;
52ba67bf 1754
de02d078 1755 trace_snd_soc_dapm_walk_done(card);
52ba67bf 1756
17282ba4
XX		 1757 /* Run card bias changes at first */
1758 dapm_pre_sequence_async(&card->dapm, 0);
1759 /* Run other bias changes in parallel */
1760 list_for_each_entry(d, &card->dapm_list, list) {
1761 if (d != &card->dapm)
1762 async_schedule_domain(dapm_pre_sequence_async, d,
1763 &async_domain);
1764 }
9d0624a7 1765 async_synchronize_full_domain(&async_domain);
452c5eaa 1766
cf1f7c6e 1767 list_for_each_entry(w, &down_list, power_list) {
95dd5cd6 1768 dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMD);
80114129
MB		 1769 }
1770
cf1f7c6e 1771 list_for_each_entry(w, &up_list, power_list) {
95dd5cd6 1772 dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMU);
80114129
MB		 1773 }
1774
6d3ddc81 1775 /* Power down widgets first; try to avoid amplifying pops. */
95dd5cd6 1776 dapm_seq_run(card, &down_list, event, false);
2b97eabc 1777
95dd5cd6 1778 dapm_widget_update(card);
97404f2e 1779
6d3ddc81 1780 /* Now power up. */
95dd5cd6 1781 dapm_seq_run(card, &up_list, event, true);
2b97eabc 1782
9d0624a7 1783 /* Run all the bias changes in parallel */
17282ba4
XX		 1784 list_for_each_entry(d, &card->dapm_list, list) {
1785 if (d != &card->dapm)
1786 async_schedule_domain(dapm_post_sequence_async, d,
1787 &async_domain);
1788 }
9d0624a7 1789 async_synchronize_full_domain(&async_domain);
17282ba4
XX		 1790 /* Run card bias changes at last */
1791 dapm_post_sequence_async(&card->dapm, 0);
452c5eaa 1792
8078d87f
LG		 1793 /* do we need to notify any clients that DAPM event is complete */
1794 list_for_each_entry(d, &card->dapm_list, list) {
1795 if (d->stream_event)
1796 d->stream_event(d, event);
1797 }
1798
95dd5cd6 1799 pop_dbg(card->dev, card->pop_time,
fd8d3bc0 1800 "DAPM sequencing finished, waiting %dms\n", card->pop_time);
3a45b867 1801 pop_wait(card->pop_time);
cb507e7e 1802
84e90930
MB		 1803 trace_snd_soc_dapm_done(card);
1804
42aa3418 1805 return 0;
2b97eabc
RP		 1806}
1807
79fb9387 1808#ifdef CONFIG_DEBUG_FS
79fb9387
MB		 1809static ssize_t dapm_widget_power_read_file(struct file *file,
1810 char __user *user_buf,
1811 size_t count, loff_t *ppos)
1812{
1813 struct snd_soc_dapm_widget *w = file->private_data;
1814 char *buf;
1815 int in, out;
1816 ssize_t ret;
1817 struct snd_soc_dapm_path *p = NULL;
1818
1819 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
1820 if (!buf)
1821 return -ENOMEM;
1822
c1862c8b
LPC		 1823 /* Supply widgets are not handled by is_connected_{input,output}_ep() */
1824 if (w->is_supply) {
1825 in = 0;
1826 out = 0;
1827 } else {
1828 in = is_connected_input_ep(w, NULL);
1829 out = is_connected_output_ep(w, NULL);
1830 }
79fb9387 1831
f13ebada
MB		 1832 ret = snprintf(buf, PAGE_SIZE, "%s: %s%s in %d out %d",
1833 w->name, w->power ? "On" : "Off",
1834 w->force ? " (forced)" : "", in, out);
79fb9387 1835
d033c36a
MB		 1836 if (w->reg >= 0)
1837 ret += snprintf(buf + ret, PAGE_SIZE - ret,
de9ba98b
LPC		 1838 " - R%d(0x%x) mask 0x%x",
1839 w->reg, w->reg, w->mask << w->shift);
d033c36a
MB		 1840
1841 ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n");
1842
3eef08ba
MB		 1843 if (w->sname)
1844 ret += snprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n",
1845 w->sname,
1846 w->active ? "active" : "inactive");
79fb9387
MB		 1847
1848 list_for_each_entry(p, &w->sources, list_sink) {
ff18620c 1849 if (p->connected && !p->connected(w, p->source))
215edda3
MB		 1850 continue;
1851
79fb9387
MB		 1852 if (p->connect)
1853 ret += snprintf(buf + ret, PAGE_SIZE - ret,
67f5ed6e 1854 " in \"%s\" \"%s\"\n",
79fb9387
MB		 1855 p->name ? p->name : "static",
1856 p->source->name);
1857 }
1858 list_for_each_entry(p, &w->sinks, list_source) {
215edda3
MB		 1859 if (p->connected && !p->connected(w, p->sink))
1860 continue;
1861
79fb9387
MB		 1862 if (p->connect)
1863 ret += snprintf(buf + ret, PAGE_SIZE - ret,
67f5ed6e 1864 " out \"%s\" \"%s\"\n",
79fb9387
MB		 1865 p->name ? p->name : "static",
1866 p->sink->name);
1867 }
1868
1869 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
1870
1871 kfree(buf);
1872 return ret;
1873}
1874
1875static const struct file_operations dapm_widget_power_fops = {
234e3405 1876 .open = simple_open,
79fb9387 1877 .read = dapm_widget_power_read_file,
6038f373 1878 .llseek = default_llseek,
79fb9387
MB		 1879};
1880
ef49e4fa
MB		 1881static ssize_t dapm_bias_read_file(struct file *file, char __user *user_buf,
1882 size_t count, loff_t *ppos)
1883{
1884 struct snd_soc_dapm_context *dapm = file->private_data;
1885 char *level;
1886
1887 switch (dapm->bias_level) {
1888 case SND_SOC_BIAS_ON:
1889 level = "On\n";
1890 break;
1891 case SND_SOC_BIAS_PREPARE:
1892 level = "Prepare\n";
1893 break;
1894 case SND_SOC_BIAS_STANDBY:
1895 level = "Standby\n";
1896 break;
1897 case SND_SOC_BIAS_OFF:
1898 level = "Off\n";
1899 break;
1900 default:
a6ed0608 1901 WARN(1, "Unknown bias_level %d\n", dapm->bias_level);
ef49e4fa
MB		 1902 level = "Unknown\n";
1903 break;
1904 }
1905
1906 return simple_read_from_buffer(user_buf, count, ppos, level,
1907 strlen(level));
1908}
1909
1910static const struct file_operations dapm_bias_fops = {
234e3405 1911 .open = simple_open,
ef49e4fa
MB		 1912 .read = dapm_bias_read_file,
1913 .llseek = default_llseek,
1914};
1915
8eecaf62
LPC		 1916void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
1917 struct dentry *parent)
79fb9387 1918{
79fb9387
MB		 1919 struct dentry *d;
1920
6553bf06
LPC		 1921 if (!parent)
1922 return;
1923
8eecaf62
LPC		 1924 dapm->debugfs_dapm = debugfs_create_dir("dapm", parent);
1925
1926 if (!dapm->debugfs_dapm) {
f1e90af2 1927 dev_warn(dapm->dev,
30a6a1a4 1928 "ASoC: Failed to create DAPM debugfs directory\n");
79fb9387 1929 return;
8eecaf62 1930 }
79fb9387 1931
ef49e4fa
MB		 1932 d = debugfs_create_file("bias_level", 0444,
1933 dapm->debugfs_dapm, dapm,
1934 &dapm_bias_fops);
1935 if (!d)
1936 dev_warn(dapm->dev,
1937 "ASoC: Failed to create bias level debugfs file\n");
d5d1e0be 1938}
ef49e4fa 1939
d5d1e0be
LPC		 1940static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
1941{
1942 struct snd_soc_dapm_context *dapm = w->dapm;
1943 struct dentry *d;
79fb9387 1944
d5d1e0be
LPC		 1945 if (!dapm->debugfs_dapm || !w->name)
1946 return;
1947
1948 d = debugfs_create_file(w->name, 0444,
1949 dapm->debugfs_dapm, w,
1950 &dapm_widget_power_fops);
1951 if (!d)
1952 dev_warn(w->dapm->dev,
1953 "ASoC: Failed to create %s debugfs file\n",
1954 w->name);
79fb9387 1955}
d5d1e0be 1956
6c45e126
LPC		 1957static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
1958{
1959 debugfs_remove_recursive(dapm->debugfs_dapm);
1960}
1961
79fb9387 1962#else
8eecaf62
LPC		 1963void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
1964 struct dentry *parent)
79fb9387
MB		 1965{
1966}
d5d1e0be
LPC		 1967
1968static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
1969{
1970}
1971
6c45e126
LPC		 1972static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
1973{
1974}
1975
79fb9387
MB		 1976#endif
1977
4a201948
LPC		 1978/*
1979 * soc_dapm_connect_path() - Connects or disconnects a path
1980 * @path: The path to update
1981 * @connect: The new connect state of the path. True if the path is connected,
1982 * false if it is disconneted.
1983 * @reason: The reason why the path changed (for debugging only)
1984 */
1985static void soc_dapm_connect_path(struct snd_soc_dapm_path *path,
1986 bool connect, const char *reason)
1987{
1988 if (path->connect == connect)
1989 return;
1990
1991 path->connect = connect;
1992 dapm_mark_dirty(path->source, reason);
1993 dapm_mark_dirty(path->sink, reason);
92a99ea4 1994 dapm_path_invalidate(path);
4a201948
LPC		 1995}
1996
2b97eabc 1997/* test and update the power status of a mux widget */
95dd5cd6 1998static int soc_dapm_mux_update_power(struct snd_soc_card *card,
40f02cd9 1999 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e)
2b97eabc
RP		 2000{
2001 struct snd_soc_dapm_path *path;
2002 int found = 0;
4a201948 2003 bool connect;
2b97eabc 2004
f9fa2b18
MB		 2005 lockdep_assert_held(&card->dapm_mutex);
2006
2b97eabc 2007 /* find dapm widget path assoc with kcontrol */
5106b92f 2008 dapm_kcontrol_for_each_path(path, kcontrol) {
2b97eabc
RP		 2009 found = 1;
2010 /* we now need to match the string in the enum to the path */
4a201948
LPC		 2011 if (!(strcmp(path->name, e->texts[mux])))
2012 connect = true;
2013 else
2014 connect = false;
2015
2016 soc_dapm_connect_path(path, connect, "mux update");
2b97eabc
RP		 2017 }
2018
ce6cfaf1 2019 if (found)
95dd5cd6 2020 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2b97eabc 2021
618dae11 2022 return found;
2b97eabc 2023}
4edbb345 2024
ce6cfaf1 2025int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_context *dapm,
6b3fc03b
LPC		 2026 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e,
2027 struct snd_soc_dapm_update *update)
4edbb345 2028{
ce6cfaf1 2029 struct snd_soc_card *card = dapm->card;
4edbb345
LG		 2030 int ret;
2031
3cd04343 2032 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
564c6504 2033 card->update = update;
95dd5cd6 2034 ret = soc_dapm_mux_update_power(card, kcontrol, mux, e);
564c6504 2035 card->update = NULL;
4edbb345 2036 mutex_unlock(&card->dapm_mutex);
618dae11 2037 if (ret > 0)
c3f48ae6 2038 soc_dpcm_runtime_update(card);
4edbb345
LG		 2039 return ret;
2040}
40f02cd9 2041EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power);
2b97eabc 2042
1b075e3f 2043/* test and update the power status of a mixer or switch widget */
95dd5cd6 2044static int soc_dapm_mixer_update_power(struct snd_soc_card *card,
283375ce 2045 struct snd_kcontrol *kcontrol, int connect)
2b97eabc
RP		 2046{
2047 struct snd_soc_dapm_path *path;
2048 int found = 0;
2049
f9fa2b18
MB		 2050 lockdep_assert_held(&card->dapm_mutex);
2051
2b97eabc 2052 /* find dapm widget path assoc with kcontrol */
5106b92f 2053 dapm_kcontrol_for_each_path(path, kcontrol) {
2b97eabc 2054 found = 1;
4a201948 2055 soc_dapm_connect_path(path, connect, "mixer update");
2b97eabc
RP		 2056 }
2057
ce6cfaf1 2058 if (found)
95dd5cd6 2059 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2b97eabc 2060
618dae11 2061 return found;
2b97eabc 2062}
4edbb345 2063
ce6cfaf1 2064int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_context *dapm,
6b3fc03b
LPC		 2065 struct snd_kcontrol *kcontrol, int connect,
2066 struct snd_soc_dapm_update *update)
4edbb345 2067{
ce6cfaf1 2068 struct snd_soc_card *card = dapm->card;
4edbb345
LG		 2069 int ret;
2070
3cd04343 2071 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
564c6504 2072 card->update = update;
95dd5cd6 2073 ret = soc_dapm_mixer_update_power(card, kcontrol, connect);
564c6504 2074 card->update = NULL;
4edbb345 2075 mutex_unlock(&card->dapm_mutex);
618dae11 2076 if (ret > 0)
c3f48ae6 2077 soc_dpcm_runtime_update(card);
4edbb345
LG		 2078 return ret;
2079}
40f02cd9 2080EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power);
2b97eabc 2081
44ba2641 2082static ssize_t dapm_widget_show_codec(struct snd_soc_codec *codec, char *buf)
2b97eabc 2083{
2b97eabc
RP		 2084 struct snd_soc_dapm_widget *w;
2085 int count = 0;
2086 char *state = "not set";
2087
00200107 2088 list_for_each_entry(w, &codec->component.card->widgets, list) {
97c866de
JN		 2089 if (w->dapm != &codec->dapm)
2090 continue;
2b97eabc
RP		 2091
2092 /* only display widgets that burnm power */
2093 switch (w->id) {
2094 case snd_soc_dapm_hp:
2095 case snd_soc_dapm_mic:
2096 case snd_soc_dapm_spk:
2097 case snd_soc_dapm_line:
2098 case snd_soc_dapm_micbias:
2099 case snd_soc_dapm_dac:
2100 case snd_soc_dapm_adc:
2101 case snd_soc_dapm_pga:
d88429a6 2102 case snd_soc_dapm_out_drv:
2b97eabc 2103 case snd_soc_dapm_mixer:
ca9c1aae 2104 case snd_soc_dapm_mixer_named_ctl:
246d0a17 2105 case snd_soc_dapm_supply:
62ea874a 2106 case snd_soc_dapm_regulator_supply:
d7e7eb91 2107 case snd_soc_dapm_clock_supply:
2b97eabc
RP		 2108 if (w->name)
2109 count += sprintf(buf + count, "%s: %s\n",
2110 w->name, w->power ? "On":"Off");
2111 break;
2112 default:
2113 break;
2114 }
2115 }
2116
ce6120cc 2117 switch (codec->dapm.bias_level) {
0be9898a
MB		 2118 case SND_SOC_BIAS_ON:
2119 state = "On";
2b97eabc 2120 break;
0be9898a
MB		 2121 case SND_SOC_BIAS_PREPARE:
2122 state = "Prepare";
2b97eabc 2123 break;
0be9898a
MB		 2124 case SND_SOC_BIAS_STANDBY:
2125 state = "Standby";
2b97eabc 2126 break;
0be9898a
MB		 2127 case SND_SOC_BIAS_OFF:
2128 state = "Off";
2b97eabc
RP		 2129 break;
2130 }
2131 count += sprintf(buf + count, "PM State: %s\n", state);
2132
2133 return count;
2134}
2135
44ba2641
BC		 2136/* show dapm widget status in sys fs */
2137static ssize_t dapm_widget_show(struct device *dev,
2138 struct device_attribute *attr, char *buf)
2139{
2140 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
2141 int i, count = 0;
2142
2143 for (i = 0; i < rtd->num_codecs; i++) {
2144 struct snd_soc_codec *codec = rtd->codec_dais[i]->codec;
2145 count += dapm_widget_show_codec(codec, buf + count);
2146 }
2147
2148 return count;
2149}
2150
2b97eabc
RP		 2151static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL);
2152
d29697dc
TI		 2153struct attribute *soc_dapm_dev_attrs[] = {
2154 &dev_attr_dapm_widget.attr,
2155 NULL
2156};
2b97eabc 2157
8872293f
LPC		 2158static void dapm_free_path(struct snd_soc_dapm_path *path)
2159{
2160 list_del(&path->list_sink);
2161 list_del(&path->list_source);
5106b92f 2162 list_del(&path->list_kcontrol);
8872293f 2163 list_del(&path->list);
8872293f
LPC		 2164 kfree(path);
2165}
2166
2b97eabc 2167/* free all dapm widgets and resources */
ce6120cc 2168static void dapm_free_widgets(struct snd_soc_dapm_context *dapm)
2b97eabc
RP		 2169{
2170 struct snd_soc_dapm_widget *w, *next_w;
2171 struct snd_soc_dapm_path *p, *next_p;
2172
97c866de
JN		 2173 list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) {
2174 if (w->dapm != dapm)
2175 continue;
2b97eabc 2176 list_del(&w->list);
8ddab3f5
JN		 2177 /*
2178 * remove source and sink paths associated to this widget.
2179 * While removing the path, remove reference to it from both
2180 * source and sink widgets so that path is removed only once.
2181 */
8872293f
LPC		 2182 list_for_each_entry_safe(p, next_p, &w->sources, list_sink)
2183 dapm_free_path(p);
2184
2185 list_for_each_entry_safe(p, next_p, &w->sinks, list_source)
2186 dapm_free_path(p);
2187
fad59888 2188 kfree(w->kcontrols);
ead9b919 2189 kfree(w->name);
2b97eabc
RP		 2190 kfree(w);
2191 }
2b97eabc
RP		 2192}
2193
91a5fca4
LPC		 2194static struct snd_soc_dapm_widget *dapm_find_widget(
2195 struct snd_soc_dapm_context *dapm, const char *pin,
2196 bool search_other_contexts)
a5302181
LG		 2197{
2198 struct snd_soc_dapm_widget *w;
91a5fca4 2199 struct snd_soc_dapm_widget *fallback = NULL;
a5302181 2200
97c866de 2201 list_for_each_entry(w, &dapm->card->widgets, list) {
a5302181 2202 if (!strcmp(w->name, pin)) {
91a5fca4
LPC		 2203 if (w->dapm == dapm)
2204 return w;
2205 else
2206 fallback = w;
a5302181
LG		 2207 }
2208 }
2209
91a5fca4
LPC		 2210 if (search_other_contexts)
2211 return fallback;
2212
2213 return NULL;
2214}
2215
2216static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm,
2217 const char *pin, int status)
2218{
2219 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
2220
f9fa2b18
MB		 2221 dapm_assert_locked(dapm);
2222
91a5fca4 2223 if (!w) {
30a6a1a4 2224 dev_err(dapm->dev, "ASoC: DAPM unknown pin %s\n", pin);
91a5fca4 2225 return -EINVAL;
0d86733c
MB		 2226 }
2227
92a99ea4 2228 if (w->connected != status) {
1a8b2d9d 2229 dapm_mark_dirty(w, "pin configuration");
92a99ea4
LPC		 2230 dapm_widget_invalidate_input_paths(w);
2231 dapm_widget_invalidate_output_paths(w);
2232 }
1a8b2d9d 2233
91a5fca4
LPC		 2234 w->connected = status;
2235 if (status == 0)
2236 w->force = 0;
2237
2238 return 0;
a5302181
LG		 2239}
2240
2b97eabc 2241/**
3eb29dfb 2242 * snd_soc_dapm_sync_unlocked - scan and power dapm paths
ce6120cc 2243 * @dapm: DAPM context
2b97eabc
RP		 2244 *
2245 * Walks all dapm audio paths and powers widgets according to their
2246 * stream or path usage.
2247 *
3eb29dfb
CK		 2248 * Requires external locking.
2249 *
2b97eabc
RP		 2250 * Returns 0 for success.
2251 */
3eb29dfb 2252int snd_soc_dapm_sync_unlocked(struct snd_soc_dapm_context *dapm)
2b97eabc 2253{
4f4c0072
MB		 2254 /*
2255 * Suppress early reports (eg, jacks syncing their state) to avoid
2256 * silly DAPM runs during card startup.
2257 */
2258 if (!dapm->card || !dapm->card->instantiated)
2259 return 0;
2260
3eb29dfb
CK		 2261 return dapm_power_widgets(dapm->card, SND_SOC_DAPM_STREAM_NOP);
2262}
2263EXPORT_SYMBOL_GPL(snd_soc_dapm_sync_unlocked);
2264
2265/**
2266 * snd_soc_dapm_sync - scan and power dapm paths
2267 * @dapm: DAPM context
2268 *
2269 * Walks all dapm audio paths and powers widgets according to their
2270 * stream or path usage.
2271 *
2272 * Returns 0 for success.
2273 */
2274int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm)
2275{
2276 int ret;
2277
3cd04343 2278 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3eb29dfb 2279 ret = snd_soc_dapm_sync_unlocked(dapm);
a73fb2df
LG		 2280 mutex_unlock(&dapm->card->dapm_mutex);
2281 return ret;
2b97eabc 2282}
a5302181 2283EXPORT_SYMBOL_GPL(snd_soc_dapm_sync);
2b97eabc 2284
6dd98b0a
LPC		 2285/*
2286 * dapm_update_widget_flags() - Re-compute widget sink and source flags
2287 * @w: The widget for which to update the flags
2288 *
2289 * Some widgets have a dynamic category which depends on which neighbors they
2290 * are connected to. This function update the category for these widgets.
2291 *
2292 * This function must be called whenever a path is added or removed to a widget.
2293 */
2294static void dapm_update_widget_flags(struct snd_soc_dapm_widget *w)
2295{
2296 struct snd_soc_dapm_path *p;
2297
2298 switch (w->id) {
2299 case snd_soc_dapm_input:
86d75003
LPC		 2300 /* On a fully routed card a input is never a source */
2301 if (w->dapm->card->fully_routed)
2302 break;
6dd98b0a
LPC		 2303 w->is_source = 1;
2304 list_for_each_entry(p, &w->sources, list_sink) {
2305 if (p->source->id == snd_soc_dapm_micbias ||
2306 p->source->id == snd_soc_dapm_mic ||
2307 p->source->id == snd_soc_dapm_line ||
2308 p->source->id == snd_soc_dapm_output) {
2309 w->is_source = 0;
2310 break;
2311 }
2312 }
2313 break;
2314 case snd_soc_dapm_output:
86d75003
LPC		 2315 /* On a fully routed card a output is never a sink */
2316 if (w->dapm->card->fully_routed)
2317 break;
6dd98b0a
LPC		 2318 w->is_sink = 1;
2319 list_for_each_entry(p, &w->sinks, list_source) {
2320 if (p->sink->id == snd_soc_dapm_spk ||
2321 p->sink->id == snd_soc_dapm_hp ||
2322 p->sink->id == snd_soc_dapm_line ||
2323 p->sink->id == snd_soc_dapm_input) {
2324 w->is_sink = 0;
2325 break;
2326 }
2327 }
2328 break;
2329 case snd_soc_dapm_line:
2330 w->is_sink = !list_empty(&w->sources);
2331 w->is_source = !list_empty(&w->sinks);
2332 break;
2333 default:
2334 break;
2335 }
2336}
2337
2553628e
LPC		 2338static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
2339 struct snd_soc_dapm_widget *wsource, struct snd_soc_dapm_widget *wsink,
2340 const char *control,
2341 int (*connected)(struct snd_soc_dapm_widget *source,
2342 struct snd_soc_dapm_widget *sink))
2b97eabc
RP		 2343{
2344 struct snd_soc_dapm_path *path;
2553628e 2345 int ret;
2b97eabc 2346
e409dfbf
LPC		 2347 if (wsink->is_supply && !wsource->is_supply) {
2348 dev_err(dapm->dev,
2349 "Connecting non-supply widget to supply widget is not supported (%s -> %s)\n",
2350 wsource->name, wsink->name);
2351 return -EINVAL;
2352 }
2353
2354 if (connected && !wsource->is_supply) {
2355 dev_err(dapm->dev,
2356 "connected() callback only supported for supply widgets (%s -> %s)\n",
2357 wsource->name, wsink->name);
2358 return -EINVAL;
2359 }
2360
2361 if (wsource->is_supply && control) {
2362 dev_err(dapm->dev,
2363 "Conditional paths are not supported for supply widgets (%s -> [%s] -> %s)\n",
2364 wsource->name, control, wsink->name);
2365 return -EINVAL;
2366 }
2367
2b97eabc
RP		 2368 path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL);
2369 if (!path)
2370 return -ENOMEM;
2371
2372 path->source = wsource;
2373 path->sink = wsink;
2553628e 2374 path->connected = connected;
2b97eabc 2375 INIT_LIST_HEAD(&path->list);
69c2d346 2376 INIT_LIST_HEAD(&path->list_kcontrol);
2b97eabc
RP		 2377 INIT_LIST_HEAD(&path->list_source);
2378 INIT_LIST_HEAD(&path->list_sink);
2379
c1862c8b
LPC		 2380 if (wsource->is_supply || wsink->is_supply)
2381 path->is_supply = 1;
2382
2b97eabc
RP		 2383 /* connect static paths */
2384 if (control == NULL) {
2b97eabc 2385 path->connect = 1;
5fe5b767
LPC		 2386 } else {
2387 /* connect dynamic paths */
2388 switch (wsink->id) {
2389 case snd_soc_dapm_mux:
2390 ret = dapm_connect_mux(dapm, path, control);
2391 if (ret != 0)
2392 goto err;
2393 break;
2394 case snd_soc_dapm_switch:
2395 case snd_soc_dapm_mixer:
2396 case snd_soc_dapm_mixer_named_ctl:
2397 ret = dapm_connect_mixer(dapm, path, control);
2398 if (ret != 0)
2399 goto err;
2400 break;
2401 default:
2402 dev_err(dapm->dev,
2403 "Control not supported for path %s -> [%s] -> %s\n",
2404 wsource->name, control, wsink->name);
2405 ret = -EINVAL;
2b97eabc 2406 goto err;
5fe5b767 2407 }
2b97eabc 2408 }
fabd0384 2409
5fe5b767
LPC		 2410 list_add(&path->list, &dapm->card->paths);
2411 list_add(&path->list_sink, &wsink->sources);
2412 list_add(&path->list_source, &wsource->sinks);
2413
6dd98b0a
LPC		 2414 dapm_update_widget_flags(wsource);
2415 dapm_update_widget_flags(wsink);
2416
5fe5b767
LPC		 2417 dapm_mark_dirty(wsource, "Route added");
2418 dapm_mark_dirty(wsink, "Route added");
2419
92a99ea4
LPC		 2420 if (dapm->card->instantiated && path->connect)
2421 dapm_path_invalidate(path);
2422
2b97eabc 2423 return 0;
2553628e
LPC		 2424err:
2425 kfree(path);
2426 return ret;
2427}
2b97eabc 2428
2553628e 2429static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm,
a4e9154c 2430 const struct snd_soc_dapm_route *route)
2553628e
LPC		 2431{
2432 struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w;
2433 struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL;
2434 const char *sink;
2435 const char *source;
2436 char prefixed_sink[80];
2437 char prefixed_source[80];
94f99c87 2438 const char *prefix;
2553628e
LPC		 2439 int ret;
2440
94f99c87
LPC		 2441 prefix = soc_dapm_prefix(dapm);
2442 if (prefix) {
2553628e 2443 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
94f99c87 2444 prefix, route->sink);
2553628e
LPC		 2445 sink = prefixed_sink;
2446 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
94f99c87 2447 prefix, route->source);
2553628e
LPC		 2448 source = prefixed_source;
2449 } else {
2450 sink = route->sink;
2451 source = route->source;
2452 }
2453
2454 /*
2455 * find src and dest widgets over all widgets but favor a widget from
2456 * current DAPM context
2457 */
2458 list_for_each_entry(w, &dapm->card->widgets, list) {
2459 if (!wsink && !(strcmp(w->name, sink))) {
2460 wtsink = w;
2461 if (w->dapm == dapm)
2462 wsink = w;
2463 continue;
2464 }
2465 if (!wsource && !(strcmp(w->name, source))) {
2466 wtsource = w;
2467 if (w->dapm == dapm)
2468 wsource = w;
2469 }
2470 }
2471 /* use widget from another DAPM context if not found from this */
2472 if (!wsink)
2473 wsink = wtsink;
2474 if (!wsource)
2475 wsource = wtsource;
2476
2477 if (wsource == NULL) {
2478 dev_err(dapm->dev, "ASoC: no source widget found for %s\n",
2479 route->source);
2480 return -ENODEV;
2481 }
2482 if (wsink == NULL) {
2483 dev_err(dapm->dev, "ASoC: no sink widget found for %s\n",
2484 route->sink);
2485 return -ENODEV;
2486 }
2487
2488 ret = snd_soc_dapm_add_path(dapm, wsource, wsink, route->control,
2489 route->connected);
2490 if (ret)
2491 goto err;
2492
2493 return 0;
2b97eabc 2494err:
30a6a1a4 2495 dev_warn(dapm->dev, "ASoC: no dapm match for %s --> %s --> %s\n",
2553628e 2496 source, route->control, sink);
2b97eabc
RP		 2497 return ret;
2498}
105f1c28 2499
efcc3c61
MB		 2500static int snd_soc_dapm_del_route(struct snd_soc_dapm_context *dapm,
2501 const struct snd_soc_dapm_route *route)
2502{
6dd98b0a 2503 struct snd_soc_dapm_widget *wsource, *wsink;
efcc3c61
MB		 2504 struct snd_soc_dapm_path *path, *p;
2505 const char *sink;
2506 const char *source;
2507 char prefixed_sink[80];
2508 char prefixed_source[80];
94f99c87 2509 const char *prefix;
efcc3c61
MB		 2510
2511 if (route->control) {
2512 dev_err(dapm->dev,
30a6a1a4 2513 "ASoC: Removal of routes with controls not supported\n");
efcc3c61
MB		 2514 return -EINVAL;
2515 }
2516
94f99c87
LPC		 2517 prefix = soc_dapm_prefix(dapm);
2518 if (prefix) {
efcc3c61 2519 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
94f99c87 2520 prefix, route->sink);
efcc3c61
MB		 2521 sink = prefixed_sink;
2522 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
94f99c87 2523 prefix, route->source);
efcc3c61
MB		 2524 source = prefixed_source;
2525 } else {
2526 sink = route->sink;
2527 source = route->source;
2528 }
2529
2530 path = NULL;
2531 list_for_each_entry(p, &dapm->card->paths, list) {
2532 if (strcmp(p->source->name, source) != 0)
2533 continue;
2534 if (strcmp(p->sink->name, sink) != 0)
2535 continue;
2536 path = p;
2537 break;
2538 }
2539
2540 if (path) {
6dd98b0a
LPC		 2541 wsource = path->source;
2542 wsink = path->sink;
2543
2544 dapm_mark_dirty(wsource, "Route removed");
2545 dapm_mark_dirty(wsink, "Route removed");
92a99ea4
LPC		 2546 if (path->connect)
2547 dapm_path_invalidate(path);
efcc3c61 2548
8872293f 2549 dapm_free_path(path);
6dd98b0a
LPC		 2550
2551 /* Update any path related flags */
2552 dapm_update_widget_flags(wsource);
2553 dapm_update_widget_flags(wsink);
efcc3c61 2554 } else {
30a6a1a4 2555 dev_warn(dapm->dev, "ASoC: Route %s->%s does not exist\n",
efcc3c61
MB		 2556 source, sink);
2557 }
2558
2559 return 0;
2560}
2561
105f1c28
MB		 2562/**
2563 * snd_soc_dapm_add_routes - Add routes between DAPM widgets
ce6120cc 2564 * @dapm: DAPM context
105f1c28
MB		 2565 * @route: audio routes
2566 * @num: number of routes
2567 *
2568 * Connects 2 dapm widgets together via a named audio path. The sink is
2569 * the widget receiving the audio signal, whilst the source is the sender
2570 * of the audio signal.
2571 *
2572 * Returns 0 for success else error. On error all resources can be freed
2573 * with a call to snd_soc_card_free().
2574 */
ce6120cc 2575int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm,
105f1c28
MB		 2576 const struct snd_soc_dapm_route *route, int num)
2577{
62d4a4b9 2578 int i, r, ret = 0;
105f1c28 2579
a73fb2df 2580 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
105f1c28 2581 for (i = 0; i < num; i++) {
a4e9154c 2582 r = snd_soc_dapm_add_route(dapm, route);
62d4a4b9 2583 if (r < 0) {
30a6a1a4
LG		 2584 dev_err(dapm->dev, "ASoC: Failed to add route %s -> %s -> %s\n",
2585 route->source,
2586 route->control ? route->control : "direct",
2587 route->sink);
62d4a4b9 2588 ret = r;
105f1c28
MB		 2589 }
2590 route++;
2591 }
a73fb2df 2592 mutex_unlock(&dapm->card->dapm_mutex);
105f1c28 2593
60884c27 2594 return ret;
105f1c28
MB		 2595}
2596EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes);
2597
efcc3c61
MB		 2598/**
2599 * snd_soc_dapm_del_routes - Remove routes between DAPM widgets
2600 * @dapm: DAPM context
2601 * @route: audio routes
2602 * @num: number of routes
2603 *
2604 * Removes routes from the DAPM context.
2605 */
2606int snd_soc_dapm_del_routes(struct snd_soc_dapm_context *dapm,
2607 const struct snd_soc_dapm_route *route, int num)
2608{
2609 int i, ret = 0;
2610
2611 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2612 for (i = 0; i < num; i++) {
2613 snd_soc_dapm_del_route(dapm, route);
2614 route++;
2615 }
2616 mutex_unlock(&dapm->card->dapm_mutex);
2617
2618 return ret;
2619}
2620EXPORT_SYMBOL_GPL(snd_soc_dapm_del_routes);
2621
bf3a9e13
MB		 2622static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context *dapm,
2623 const struct snd_soc_dapm_route *route)
2624{
2625 struct snd_soc_dapm_widget *source = dapm_find_widget(dapm,
2626 route->source,
2627 true);
2628 struct snd_soc_dapm_widget *sink = dapm_find_widget(dapm,
2629 route->sink,
2630 true);
2631 struct snd_soc_dapm_path *path;
2632 int count = 0;
2633
2634 if (!source) {
30a6a1a4 2635 dev_err(dapm->dev, "ASoC: Unable to find source %s for weak route\n",
bf3a9e13
MB		 2636 route->source);
2637 return -ENODEV;
2638 }
2639
2640 if (!sink) {
30a6a1a4 2641 dev_err(dapm->dev, "ASoC: Unable to find sink %s for weak route\n",
bf3a9e13
MB		 2642 route->sink);
2643 return -ENODEV;
2644 }
2645
2646 if (route->control || route->connected)
30a6a1a4 2647 dev_warn(dapm->dev, "ASoC: Ignoring control for weak route %s->%s\n",
bf3a9e13
MB		 2648 route->source, route->sink);
2649
2650 list_for_each_entry(path, &source->sinks, list_source) {
2651 if (path->sink == sink) {
2652 path->weak = 1;
2653 count++;
2654 }
2655 }
2656
2657 if (count == 0)
30a6a1a4 2658 dev_err(dapm->dev, "ASoC: No path found for weak route %s->%s\n",
bf3a9e13
MB		 2659 route->source, route->sink);
2660 if (count > 1)
30a6a1a4 2661 dev_warn(dapm->dev, "ASoC: %d paths found for weak route %s->%s\n",
bf3a9e13
MB		 2662 count, route->source, route->sink);
2663
2664 return 0;
2665}
2666
2667/**
2668 * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak
2669 * @dapm: DAPM context
2670 * @route: audio routes
2671 * @num: number of routes
2672 *
2673 * Mark existing routes matching those specified in the passed array
2674 * as being weak, meaning that they are ignored for the purpose of
2675 * power decisions. The main intended use case is for sidetone paths
2676 * which couple audio between other independent paths if they are both
2677 * active in order to make the combination work better at the user
2678 * level but which aren't intended to be "used".
2679 *
2680 * Note that CODEC drivers should not use this as sidetone type paths
2681 * can frequently also be used as bypass paths.
2682 */
2683int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context *dapm,
2684 const struct snd_soc_dapm_route *route, int num)
2685{
2686 int i, err;
2687 int ret = 0;
2688
a73fb2df 2689 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
bf3a9e13
MB		 2690 for (i = 0; i < num; i++) {
2691 err = snd_soc_dapm_weak_route(dapm, route);
2692 if (err)
2693 ret = err;
2694 route++;
2695 }
a73fb2df 2696 mutex_unlock(&dapm->card->dapm_mutex);
bf3a9e13
MB		 2697
2698 return ret;
2699}
2700EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes);
2701
2b97eabc
RP		 2702/**
2703 * snd_soc_dapm_new_widgets - add new dapm widgets
ce6120cc 2704 * @dapm: DAPM context
2b97eabc
RP		 2705 *
2706 * Checks the codec for any new dapm widgets and creates them if found.
2707 *
2708 * Returns 0 for success.
2709 */
824ef826 2710int snd_soc_dapm_new_widgets(struct snd_soc_card *card)
2b97eabc
RP		 2711{
2712 struct snd_soc_dapm_widget *w;
b66a70d5 2713 unsigned int val;
2b97eabc 2714
95dd5cd6 2715 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
a73fb2df 2716
95dd5cd6 2717 list_for_each_entry(w, &card->widgets, list)
2b97eabc
RP		 2718 {
2719 if (w->new)
2720 continue;
2721
fad59888
SW		 2722 if (w->num_kcontrols) {
2723 w->kcontrols = kzalloc(w->num_kcontrols *
2724 sizeof(struct snd_kcontrol *),
2725 GFP_KERNEL);
a73fb2df 2726 if (!w->kcontrols) {
95dd5cd6 2727 mutex_unlock(&card->dapm_mutex);
fad59888 2728 return -ENOMEM;
a73fb2df 2729 }
fad59888
SW		 2730 }
2731
2b97eabc
RP		 2732 switch(w->id) {
2733 case snd_soc_dapm_switch:
2734 case snd_soc_dapm_mixer:
ca9c1aae 2735 case snd_soc_dapm_mixer_named_ctl:
4b80b8c2 2736 dapm_new_mixer(w);
2b97eabc
RP		 2737 break;
2738 case snd_soc_dapm_mux:
4b80b8c2 2739 dapm_new_mux(w);
2b97eabc 2740 break;
2b97eabc 2741 case snd_soc_dapm_pga:
d88429a6 2742 case snd_soc_dapm_out_drv:
4b80b8c2 2743 dapm_new_pga(w);
2b97eabc 2744 break;
c6615082
NO		 2745 case snd_soc_dapm_dai_link:
2746 dapm_new_dai_link(w);
2747 break;
7ca3a18b 2748 default:
2b97eabc
RP		 2749 break;
2750 }
b66a70d5
MB		 2751
2752 /* Read the initial power state from the device */
2753 if (w->reg >= 0) {
ce0fc93a 2754 soc_dapm_read(w->dapm, w->reg, &val);
f7d3c170 2755 val = val >> w->shift;
de9ba98b
LPC		 2756 val &= w->mask;
2757 if (val == w->on_val)
b66a70d5
MB		 2758 w->power = 1;
2759 }
2760
2b97eabc 2761 w->new = 1;
d5d1e0be 2762
7508b12a 2763 dapm_mark_dirty(w, "new widget");
d5d1e0be 2764 dapm_debugfs_add_widget(w);
2b97eabc
RP		 2765 }
2766
95dd5cd6
LPC		 2767 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2768 mutex_unlock(&card->dapm_mutex);
2b97eabc
RP		 2769 return 0;
2770}
2771EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets);
2772
2773/**
2774 * snd_soc_dapm_get_volsw - dapm mixer get callback
2775 * @kcontrol: mixer control
ac11a2b3 2776 * @ucontrol: control element information
2b97eabc
RP		 2777 *
2778 * Callback to get the value of a dapm mixer control.
2779 *
2780 * Returns 0 for success.
2781 */
2782int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol,
2783 struct snd_ctl_elem_value *ucontrol)
2784{
ce0fc93a
LPC		 2785 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
2786 struct snd_soc_card *card = dapm->card;
4eaa9819
JS		 2787 struct soc_mixer_control *mc =
2788 (struct soc_mixer_control *)kcontrol->private_value;
249ce138 2789 int reg = mc->reg;
815ecf8d 2790 unsigned int shift = mc->shift;
4eaa9819 2791 int max = mc->max;
815ecf8d 2792 unsigned int mask = (1 << fls(max)) - 1;
da602ab8 2793 unsigned int invert = mc->invert;
57295073 2794 unsigned int val;
ce0fc93a 2795 int ret = 0;
da602ab8
BT		 2796
2797 if (snd_soc_volsw_is_stereo(mc))
ce0fc93a 2798 dev_warn(dapm->dev,
30a6a1a4 2799 "ASoC: Control '%s' is stereo, which is not supported\n",
da602ab8 2800 kcontrol->id.name);
2b97eabc 2801
57295073 2802 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
ce0fc93a
LPC		 2803 if (dapm_kcontrol_is_powered(kcontrol) && reg != SND_SOC_NOPM) {
2804 ret = soc_dapm_read(dapm, reg, &val);
2805 val = (val >> shift) & mask;
2806 } else {
57295073 2807 val = dapm_kcontrol_get_value(kcontrol);
ce0fc93a 2808 }
57295073
LPC		 2809 mutex_unlock(&card->dapm_mutex);
2810
da602ab8 2811 if (invert)
57295073
LPC		 2812 ucontrol->value.integer.value[0] = max - val;
2813 else
2814 ucontrol->value.integer.value[0] = val;
2b97eabc 2815
ce0fc93a 2816 return ret;
2b97eabc
RP		 2817}
2818EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw);
2819
2820/**
2821 * snd_soc_dapm_put_volsw - dapm mixer set callback
2822 * @kcontrol: mixer control
ac11a2b3 2823 * @ucontrol: control element information
2b97eabc
RP		 2824 *
2825 * Callback to set the value of a dapm mixer control.
2826 *
2827 * Returns 0 for success.
2828 */
2829int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol,
2830 struct snd_ctl_elem_value *ucontrol)
2831{
ce0fc93a
LPC		 2832 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
2833 struct snd_soc_card *card = dapm->card;
4eaa9819
JS		 2834 struct soc_mixer_control *mc =
2835 (struct soc_mixer_control *)kcontrol->private_value;
249ce138 2836 int reg = mc->reg;
815ecf8d 2837 unsigned int shift = mc->shift;
4eaa9819 2838 int max = mc->max;
815ecf8d
JS		 2839 unsigned int mask = (1 << fls(max)) - 1;
2840 unsigned int invert = mc->invert;
e9cf7049 2841 unsigned int val;
18626c7e 2842 int connect, change, reg_change = 0;
97404f2e 2843 struct snd_soc_dapm_update update;
52765976 2844 int ret = 0;
2b97eabc 2845
da602ab8 2846 if (snd_soc_volsw_is_stereo(mc))
ce0fc93a 2847 dev_warn(dapm->dev,
30a6a1a4 2848 "ASoC: Control '%s' is stereo, which is not supported\n",
da602ab8
BT		 2849 kcontrol->id.name);
2850
2b97eabc 2851 val = (ucontrol->value.integer.value[0] & mask);
8a720718 2852 connect = !!val;
2b97eabc
RP		 2853
2854 if (invert)
a7a4ac86 2855 val = max - val;
2b97eabc 2856
3cd04343 2857 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2b97eabc 2858
249ce138 2859 change = dapm_kcontrol_set_value(kcontrol, val);
97404f2e 2860
18626c7e
JN		 2861 if (reg != SND_SOC_NOPM) {
2862 mask = mask << shift;
2863 val = val << shift;
2864
ce0fc93a 2865 reg_change = soc_dapm_test_bits(dapm, reg, mask, val);
18626c7e
JN		 2866 }
2867
2868 if (change || reg_change) {
2869 if (reg_change) {
2870 update.kcontrol = kcontrol;
2871 update.reg = reg;
2872 update.mask = mask;
2873 update.val = val;
2874 card->update = &update;
249ce138 2875 }
18626c7e 2876 change |= reg_change;
97404f2e 2877
52765976 2878 ret = soc_dapm_mixer_update_power(card, kcontrol, connect);
fafd2176 2879
564c6504 2880 card->update = NULL;
283375ce
MB		 2881 }
2882
a73fb2df 2883 mutex_unlock(&card->dapm_mutex);
52765976
NC		 2884
2885 if (ret > 0)
2886 soc_dpcm_runtime_update(card);
2887
56a67834 2888 return change;
2b97eabc
RP		 2889}
2890EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw);
2891
2892/**
2893 * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback
2894 * @kcontrol: mixer control
ac11a2b3 2895 * @ucontrol: control element information
2b97eabc
RP		 2896 *
2897 * Callback to get the value of a dapm enumerated double mixer control.
2898 *
2899 * Returns 0 for success.
2900 */
2901int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol,
2902 struct snd_ctl_elem_value *ucontrol)
2903{
ce0fc93a 2904 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
2b97eabc 2905 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
3727b496 2906 unsigned int reg_val, val;
52765976 2907
69128316
GU		 2908 if (e->reg != SND_SOC_NOPM) {
2909 int ret = soc_dapm_read(dapm, e->reg, &reg_val);
2910 if (ret)
2911 return ret;
2912 } else {
236aaa68 2913 reg_val = dapm_kcontrol_get_value(kcontrol);
69128316 2914 }
2e72f8e3 2915
2e72f8e3 2916 val = (reg_val >> e->shift_l) & e->mask;
3727b496 2917 ucontrol->value.enumerated.item[0] = snd_soc_enum_val_to_item(e, val);
2e72f8e3
PU		 2918 if (e->shift_l != e->shift_r) {
2919 val = (reg_val >> e->shift_r) & e->mask;
3727b496
LPC		 2920 val = snd_soc_enum_val_to_item(e, val);
2921 ucontrol->value.enumerated.item[1] = val;
2e72f8e3
PU		 2922 }
2923
69128316 2924 return 0;
2e72f8e3 2925}
2b97eabc 2926EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double);
2e72f8e3
PU		 2927
2928/**
2b97eabc 2929 * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback
2e72f8e3
PU		 2930 * @kcontrol: mixer control
2931 * @ucontrol: control element information
2932 *
2b97eabc 2933 * Callback to set the value of a dapm enumerated double mixer control.
2e72f8e3
PU		 2934 *
2935 * Returns 0 for success.
2936 */
2b97eabc 2937int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol,
2e72f8e3
PU		 2938 struct snd_ctl_elem_value *ucontrol)
2939{
ce0fc93a
LPC		 2940 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
2941 struct snd_soc_card *card = dapm->card;
74155556 2942 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
3727b496
LPC		 2943 unsigned int *item = ucontrol->value.enumerated.item;
2944 unsigned int val, change;
46f5822f 2945 unsigned int mask;
97404f2e 2946 struct snd_soc_dapm_update update;
52765976 2947 int ret = 0;
2e72f8e3 2948
3727b496 2949 if (item[0] >= e->items)
2e72f8e3 2950 return -EINVAL;
3727b496
LPC		 2951
2952 val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l;
2e72f8e3
PU		 2953 mask = e->mask << e->shift_l;
2954 if (e->shift_l != e->shift_r) {
3727b496 2955 if (item[1] > e->items)
2e72f8e3 2956 return -EINVAL;
3727b496 2957 val |= snd_soc_enum_item_to_val(e, item[1]) << e->shift_l;
2e72f8e3
PU		 2958 mask |= e->mask << e->shift_r;
2959 }
2960
3cd04343 2961 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
fafd2176 2962
236aaa68 2963 if (e->reg != SND_SOC_NOPM)
ce0fc93a 2964 change = soc_dapm_test_bits(dapm, e->reg, mask, val);
236aaa68
LPC		 2965 else
2966 change = dapm_kcontrol_set_value(kcontrol, val);
2967
fafd2176 2968 if (change) {
236aaa68
LPC		 2969 if (e->reg != SND_SOC_NOPM) {
2970 update.kcontrol = kcontrol;
2971 update.reg = e->reg;
2972 update.mask = mask;
2973 update.val = val;
2974 card->update = &update;
2975 }
1642e3d4 2976
3727b496 2977 ret = soc_dapm_mux_update_power(card, kcontrol, item[0], e);
fafd2176 2978
564c6504 2979 card->update = NULL;
fafd2176 2980 }
2e72f8e3 2981
a73fb2df 2982 mutex_unlock(&card->dapm_mutex);
52765976
NC		 2983
2984 if (ret > 0)
2985 soc_dpcm_runtime_update(card);
2986
97404f2e 2987 return change;
2e72f8e3 2988}
2b97eabc 2989EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double);
2e72f8e3 2990
8b37dbd2
MB		 2991/**
2992 * snd_soc_dapm_info_pin_switch - Info for a pin switch
2993 *
2994 * @kcontrol: mixer control
2995 * @uinfo: control element information
2996 *
2997 * Callback to provide information about a pin switch control.
2998 */
2999int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol,
3000 struct snd_ctl_elem_info *uinfo)
3001{
3002 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
3003 uinfo->count = 1;
3004 uinfo->value.integer.min = 0;
3005 uinfo->value.integer.max = 1;
3006
3007 return 0;
3008}
3009EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch);
3010
3011/**
3012 * snd_soc_dapm_get_pin_switch - Get information for a pin switch
3013 *
3014 * @kcontrol: mixer control
3015 * @ucontrol: Value
3016 */
3017int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol,
3018 struct snd_ctl_elem_value *ucontrol)
3019{
48a8c394 3020 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
8b37dbd2
MB		 3021 const char *pin = (const char *)kcontrol->private_value;
3022
3cd04343 3023 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
8b37dbd2
MB		 3024
3025 ucontrol->value.integer.value[0] =
48a8c394 3026 snd_soc_dapm_get_pin_status(&card->dapm, pin);
8b37dbd2 3027
a73fb2df 3028 mutex_unlock(&card->dapm_mutex);
8b37dbd2
MB		 3029
3030 return 0;
3031}
3032EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch);
3033
3034/**
3035 * snd_soc_dapm_put_pin_switch - Set information for a pin switch
3036 *
3037 * @kcontrol: mixer control
3038 * @ucontrol: Value
3039 */
3040int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol,
3041 struct snd_ctl_elem_value *ucontrol)
3042{
48a8c394 3043 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
8b37dbd2
MB		 3044 const char *pin = (const char *)kcontrol->private_value;
3045
8b37dbd2 3046 if (ucontrol->value.integer.value[0])
48a8c394 3047 snd_soc_dapm_enable_pin(&card->dapm, pin);
8b37dbd2 3048 else
48a8c394 3049 snd_soc_dapm_disable_pin(&card->dapm, pin);
8b37dbd2 3050
a73fb2df 3051 snd_soc_dapm_sync(&card->dapm);
8b37dbd2
MB		 3052 return 0;
3053}
3054EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch);
3055
5ba06fc9
MB		 3056static struct snd_soc_dapm_widget *
3057snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
3058 const struct snd_soc_dapm_widget *widget)
2b97eabc
RP		 3059{
3060 struct snd_soc_dapm_widget *w;
94f99c87 3061 const char *prefix;
62ea874a 3062 int ret;
2b97eabc
RP		 3063
3064 if ((w = dapm_cnew_widget(widget)) == NULL)
5ba06fc9 3065 return NULL;
2b97eabc 3066
62ea874a
MB		 3067 switch (w->id) {
3068 case snd_soc_dapm_regulator_supply:
a3cc056b
LG		 3069 w->regulator = devm_regulator_get(dapm->dev, w->name);
3070 if (IS_ERR(w->regulator)) {
3071 ret = PTR_ERR(w->regulator);
30a6a1a4 3072 dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
62ea874a 3073 w->name, ret);
5ba06fc9 3074 return NULL;
62ea874a 3075 }
8784c77a 3076
de9ba98b 3077 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
8784c77a
MB		 3078 ret = regulator_allow_bypass(w->regulator, true);
3079 if (ret != 0)
3080 dev_warn(w->dapm->dev,
30686c35 3081 "ASoC: Failed to bypass %s: %d\n",
8784c77a
MB		 3082 w->name, ret);
3083 }
62ea874a 3084 break;
d7e7eb91 3085 case snd_soc_dapm_clock_supply:
165961ef 3086#ifdef CONFIG_CLKDEV_LOOKUP
695594f1 3087 w->clk = devm_clk_get(dapm->dev, w->name);
d7e7eb91
OL		 3088 if (IS_ERR(w->clk)) {
3089 ret = PTR_ERR(w->clk);
30a6a1a4 3090 dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
d7e7eb91
OL		 3091 w->name, ret);
3092 return NULL;
3093 }
ec02995a
MB		 3094#else
3095 return NULL;
3096#endif
d7e7eb91 3097 break;
62ea874a
MB		 3098 default:
3099 break;
3100 }
2b97eabc 3101
94f99c87 3102 prefix = soc_dapm_prefix(dapm);
fdb6eb0a 3103 if (prefix) {
94f99c87 3104 w->name = kasprintf(GFP_KERNEL, "%s %s", prefix, widget->name);
fdb6eb0a
KC		 3105 if (widget->sname)
3106 w->sname = kasprintf(GFP_KERNEL, "%s %s", prefix,
3107 widget->sname);
3108 } else {
2b581074 3109 w->name = kasprintf(GFP_KERNEL, "%s", widget->name);
fdb6eb0a
KC		 3110 if (widget->sname)
3111 w->sname = kasprintf(GFP_KERNEL, "%s", widget->sname);
3112 }
ead9b919
JN		 3113 if (w->name == NULL) {
3114 kfree(w);
5ba06fc9 3115 return NULL;
ead9b919 3116 }
ead9b919 3117
7ca3a18b 3118 switch (w->id) {
6dd98b0a 3119 case snd_soc_dapm_mic:
6dd98b0a 3120 w->is_source = 1;
7ca3a18b
MB		 3121 w->power_check = dapm_generic_check_power;
3122 break;
86d75003
LPC		 3123 case snd_soc_dapm_input:
3124 if (!dapm->card->fully_routed)
3125 w->is_source = 1;
3126 w->power_check = dapm_generic_check_power;
3127 break;
6dd98b0a
LPC		 3128 case snd_soc_dapm_spk:
3129 case snd_soc_dapm_hp:
6dd98b0a 3130 w->is_sink = 1;
7ca3a18b
MB		 3131 w->power_check = dapm_generic_check_power;
3132 break;
86d75003
LPC		 3133 case snd_soc_dapm_output:
3134 if (!dapm->card->fully_routed)
3135 w->is_sink = 1;
3136 w->power_check = dapm_generic_check_power;
3137 break;
6dd98b0a
LPC		 3138 case snd_soc_dapm_vmid:
3139 case snd_soc_dapm_siggen:
3140 w->is_source = 1;
3141 w->power_check = dapm_always_on_check_power;
3142 break;
3143 case snd_soc_dapm_mux:
3144 case snd_soc_dapm_switch:
3145 case snd_soc_dapm_mixer:
3146 case snd_soc_dapm_mixer_named_ctl:
63c69a6e
MB		 3147 case snd_soc_dapm_adc:
3148 case snd_soc_dapm_aif_out:
3149 case snd_soc_dapm_dac:
3150 case snd_soc_dapm_aif_in:
7ca3a18b
MB		 3151 case snd_soc_dapm_pga:
3152 case snd_soc_dapm_out_drv:
7ca3a18b 3153 case snd_soc_dapm_micbias:
7ca3a18b 3154 case snd_soc_dapm_line:
c74184ed 3155 case snd_soc_dapm_dai_link:
cdef2ad3
LPC		 3156 case snd_soc_dapm_dai_out:
3157 case snd_soc_dapm_dai_in:
7ca3a18b
MB		 3158 w->power_check = dapm_generic_check_power;
3159 break;
3160 case snd_soc_dapm_supply:
62ea874a 3161 case snd_soc_dapm_regulator_supply:
d7e7eb91 3162 case snd_soc_dapm_clock_supply:
57295073 3163 case snd_soc_dapm_kcontrol:
6dd98b0a 3164 w->is_supply = 1;
7ca3a18b
MB		 3165 w->power_check = dapm_supply_check_power;
3166 break;
3167 default:
3168 w->power_check = dapm_always_on_check_power;
3169 break;
3170 }
3171
ce6120cc 3172 w->dapm = dapm;
2b97eabc
RP		 3173 INIT_LIST_HEAD(&w->sources);
3174 INIT_LIST_HEAD(&w->sinks);
3175 INIT_LIST_HEAD(&w->list);
db432b41 3176 INIT_LIST_HEAD(&w->dirty);
97c866de 3177 list_add(&w->list, &dapm->card->widgets);
2b97eabc 3178
92a99ea4
LPC		 3179 w->inputs = -1;
3180 w->outputs = -1;
3181
2b97eabc
RP		 3182 /* machine layer set ups unconnected pins and insertions */
3183 w->connected = 1;
5ba06fc9 3184 return w;
2b97eabc 3185}
2b97eabc 3186
4ba1327a
MB		 3187/**
3188 * snd_soc_dapm_new_controls - create new dapm controls
ce6120cc 3189 * @dapm: DAPM context
4ba1327a
MB		 3190 * @widget: widget array
3191 * @num: number of widgets
3192 *
3193 * Creates new DAPM controls based upon the templates.
3194 *
3195 * Returns 0 for success else error.
3196 */
ce6120cc 3197int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm,
4ba1327a
MB		 3198 const struct snd_soc_dapm_widget *widget,
3199 int num)
3200{
5ba06fc9
MB		 3201 struct snd_soc_dapm_widget *w;
3202 int i;
60884c27 3203 int ret = 0;
4ba1327a 3204
a73fb2df 3205 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
4ba1327a 3206 for (i = 0; i < num; i++) {
5ba06fc9
MB		 3207 w = snd_soc_dapm_new_control(dapm, widget);
3208 if (!w) {
f7d41ae8 3209 dev_err(dapm->dev,
5ba06fc9
MB		 3210 "ASoC: Failed to create DAPM control %s\n",
3211 widget->name);
60884c27
DC		 3212 ret = -ENOMEM;
3213 break;
b8b33cb5 3214 }
4ba1327a
MB		 3215 widget++;
3216 }
a73fb2df 3217 mutex_unlock(&dapm->card->dapm_mutex);
60884c27 3218 return ret;
4ba1327a
MB		 3219}
3220EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls);
3221
c74184ed
MB		 3222static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w,
3223 struct snd_kcontrol *kcontrol, int event)
3224{
3225 struct snd_soc_dapm_path *source_p, *sink_p;
3226 struct snd_soc_dai *source, *sink;
c6615082 3227 const struct snd_soc_pcm_stream *config = w->params + w->params_select;
c74184ed 3228 struct snd_pcm_substream substream;
9747cec2 3229 struct snd_pcm_hw_params *params = NULL;
c74184ed
MB		 3230 u64 fmt;
3231 int ret;
3232
bf4edea8
TI		 3233 if (WARN_ON(!config) ||
3234 WARN_ON(list_empty(&w->sources) || list_empty(&w->sinks)))
3235 return -EINVAL;
c74184ed
MB		 3236
3237 /* We only support a single source and sink, pick the first */
3238 source_p = list_first_entry(&w->sources, struct snd_soc_dapm_path,
3239 list_sink);
3240 sink_p = list_first_entry(&w->sinks, struct snd_soc_dapm_path,
3241 list_source);
3242
bf4edea8
TI		 3243 if (WARN_ON(!source_p || !sink_p) ||
3244 WARN_ON(!sink_p->source || !source_p->sink) ||
3245 WARN_ON(!source_p->source || !sink_p->sink))
3246 return -EINVAL;
c74184ed
MB		 3247
3248 source = source_p->source->priv;
3249 sink = sink_p->sink->priv;
3250
3251 /* Be a little careful as we don't want to overflow the mask array */
3252 if (config->formats) {
3253 fmt = ffs(config->formats) - 1;
3254 } else {
30a6a1a4 3255 dev_warn(w->dapm->dev, "ASoC: Invalid format %llx specified\n",
c74184ed
MB		 3256 config->formats);
3257 fmt = 0;
3258 }
3259
3260 /* Currently very limited parameter selection */
9747cec2
MB		 3261 params = kzalloc(sizeof(*params), GFP_KERNEL);
3262 if (!params) {
3263 ret = -ENOMEM;
3264 goto out;
3265 }
3266 snd_mask_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), fmt);
c74184ed 3267
9747cec2 3268 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->min =
c74184ed 3269 config->rate_min;
9747cec2 3270 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->max =
c74184ed
MB		 3271 config->rate_max;
3272
9747cec2 3273 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->min
c74184ed 3274 = config->channels_min;
9747cec2 3275 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max
c74184ed
MB		 3276 = config->channels_max;
3277
3278 memset(&substream, 0, sizeof(substream));
3279
3280 switch (event) {
3281 case SND_SOC_DAPM_PRE_PMU:
93e6958a
BC		 3282 substream.stream = SNDRV_PCM_STREAM_CAPTURE;
3283 ret = soc_dai_hw_params(&substream, params, source);
3284 if (ret < 0)
3285 goto out;
c74184ed 3286
93e6958a
BC		 3287 substream.stream = SNDRV_PCM_STREAM_PLAYBACK;
3288 ret = soc_dai_hw_params(&substream, params, sink);
3289 if (ret < 0)
3290 goto out;
c74184ed
MB		 3291 break;
3292
3293 case SND_SOC_DAPM_POST_PMU:
da18396f
MB		 3294 ret = snd_soc_dai_digital_mute(sink, 0,
3295 SNDRV_PCM_STREAM_PLAYBACK);
c74184ed 3296 if (ret != 0 && ret != -ENOTSUPP)
30a6a1a4 3297 dev_warn(sink->dev, "ASoC: Failed to unmute: %d\n", ret);
9747cec2 3298 ret = 0;
c74184ed
MB		 3299 break;
3300
3301 case SND_SOC_DAPM_PRE_PMD:
da18396f
MB		 3302 ret = snd_soc_dai_digital_mute(sink, 1,
3303 SNDRV_PCM_STREAM_PLAYBACK);
c74184ed 3304 if (ret != 0 && ret != -ENOTSUPP)
30a6a1a4 3305 dev_warn(sink->dev, "ASoC: Failed to mute: %d\n", ret);
9747cec2 3306 ret = 0;
c74184ed
MB		 3307 break;
3308
3309 default:
a6ed0608 3310 WARN(1, "Unknown event %d\n", event);
c74184ed
MB		 3311 return -EINVAL;
3312 }
3313
9747cec2
MB		 3314out:
3315 kfree(params);
3316 return ret;
c74184ed
MB		 3317}
3318
c6615082
NO		 3319static int snd_soc_dapm_dai_link_get(struct snd_kcontrol *kcontrol,
3320 struct snd_ctl_elem_value *ucontrol)
3321{
3322 struct snd_soc_dapm_widget *w = snd_kcontrol_chip(kcontrol);
3323
3324 ucontrol->value.integer.value[0] = w->params_select;
3325
3326 return 0;
3327}
3328
3329static int snd_soc_dapm_dai_link_put(struct snd_kcontrol *kcontrol,
3330 struct snd_ctl_elem_value *ucontrol)
3331{
3332 struct snd_soc_dapm_widget *w = snd_kcontrol_chip(kcontrol);
3333
3334 /* Can't change the config when widget is already powered */
3335 if (w->power)
3336 return -EBUSY;
3337
3338 if (ucontrol->value.integer.value[0] == w->params_select)
3339 return 0;
3340
3341 if (ucontrol->value.integer.value[0] >= w->num_params)
3342 return -EINVAL;
3343
3344 w->params_select = ucontrol->value.integer.value[0];
3345
3346 return 0;
3347}
3348
c74184ed
MB		 3349int snd_soc_dapm_new_pcm(struct snd_soc_card *card,
3350 const struct snd_soc_pcm_stream *params,
c6615082 3351 unsigned int num_params,
c74184ed
MB		 3352 struct snd_soc_dapm_widget *source,
3353 struct snd_soc_dapm_widget *sink)
3354{
c74184ed
MB		 3355 struct snd_soc_dapm_widget template;
3356 struct snd_soc_dapm_widget *w;
c74184ed 3357 char *link_name;
c6615082
NO		 3358 int ret, count;
3359 unsigned long private_value;
3360 const char **w_param_text;
3361 struct soc_enum w_param_enum[] = {
3362 SOC_ENUM_SINGLE(0, 0, 0, NULL),
3363 };
3364 struct snd_kcontrol_new kcontrol_dai_link[] = {
3365 SOC_ENUM_EXT(NULL, w_param_enum[0],
3366 snd_soc_dapm_dai_link_get,
3367 snd_soc_dapm_dai_link_put),
3368 };
3369 const struct snd_soc_pcm_stream *config = params;
3370
3371 w_param_text = devm_kcalloc(card->dev, num_params,
3372 sizeof(char *), GFP_KERNEL);
3373 if (!w_param_text)
c74184ed 3374 return -ENOMEM;
c74184ed 3375
46172b6c
CK		 3376 link_name = devm_kasprintf(card->dev, GFP_KERNEL, "%s-%s",
3377 source->name, sink->name);
c6615082
NO		 3378 if (!link_name) {
3379 ret = -ENOMEM;
3380 goto outfree_w_param;
3381 }
c74184ed 3382
c6615082
NO		 3383 for (count = 0 ; count < num_params; count++) {
3384 if (!config->stream_name) {
3385 dev_warn(card->dapm.dev,
3386 "ASoC: anonymous config %d for dai link %s\n",
3387 count, link_name);
c6615082 3388 w_param_text[count] =
46172b6c
CK		 3389 devm_kasprintf(card->dev, GFP_KERNEL,
3390 "Anonymous Configuration %d",
3391 count);
c6615082
NO		 3392 if (!w_param_text[count]) {
3393 ret = -ENOMEM;
3394 goto outfree_link_name;
3395 }
c6615082
NO		 3396 } else {
3397 w_param_text[count] = devm_kmemdup(card->dev,
3398 config->stream_name,
3399 strlen(config->stream_name) + 1,
3400 GFP_KERNEL);
3401 if (!w_param_text[count]) {
3402 ret = -ENOMEM;
3403 goto outfree_link_name;
3404 }
3405 }
3406 config++;
3407 }
3408 w_param_enum[0].items = num_params;
3409 w_param_enum[0].texts = w_param_text;
c74184ed
MB		 3410
3411 memset(&template, 0, sizeof(template));
3412 template.reg = SND_SOC_NOPM;
3413 template.id = snd_soc_dapm_dai_link;
3414 template.name = link_name;
3415 template.event = snd_soc_dai_link_event;
3416 template.event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
3417 SND_SOC_DAPM_PRE_PMD;
c6615082
NO		 3418 template.num_kcontrols = 1;
3419 /* duplicate w_param_enum on heap so that memory persists */
3420 private_value =
3421 (unsigned long) devm_kmemdup(card->dev,
3422 (void *)(kcontrol_dai_link[0].private_value),
3423 sizeof(struct soc_enum), GFP_KERNEL);
3424 if (!private_value) {
3425 dev_err(card->dev, "ASoC: Failed to create control for %s widget\n",
3426 link_name);
3427 ret = -ENOMEM;
3428 goto outfree_link_name;
3429 }
3430 kcontrol_dai_link[0].private_value = private_value;
3431 /* duplicate kcontrol_dai_link on heap so that memory persists */
3432 template.kcontrol_news =
3433 devm_kmemdup(card->dev, &kcontrol_dai_link[0],
3434 sizeof(struct snd_kcontrol_new),
3435 GFP_KERNEL);
3436 if (!template.kcontrol_news) {
3437 dev_err(card->dev, "ASoC: Failed to create control for %s widget\n",
3438 link_name);
3439 ret = -ENOMEM;
3440 goto outfree_private_value;
3441 }
c74184ed 3442
30a6a1a4 3443 dev_dbg(card->dev, "ASoC: adding %s widget\n", link_name);
c74184ed
MB		 3444
3445 w = snd_soc_dapm_new_control(&card->dapm, &template);
3446 if (!w) {
30a6a1a4 3447 dev_err(card->dev, "ASoC: Failed to create %s widget\n",
c74184ed 3448 link_name);
c6615082
NO		 3449 ret = -ENOMEM;
3450 goto outfree_kcontrol_news;
c74184ed
MB		 3451 }
3452
3453 w->params = params;
c6615082 3454 w->num_params = num_params;
c74184ed 3455
fe83897f
LPC		 3456 ret = snd_soc_dapm_add_path(&card->dapm, source, w, NULL, NULL);
3457 if (ret)
c6615082 3458 goto outfree_w;
fe83897f 3459 return snd_soc_dapm_add_path(&card->dapm, w, sink, NULL, NULL);
c6615082
NO		 3460
3461outfree_w:
3462 devm_kfree(card->dev, w);
3463outfree_kcontrol_news:
3464 devm_kfree(card->dev, (void *)template.kcontrol_news);
3465outfree_private_value:
3466 devm_kfree(card->dev, (void *)private_value);
3467outfree_link_name:
3468 devm_kfree(card->dev, link_name);
3469outfree_w_param:
3470 for (count = 0 ; count < num_params; count++)
3471 devm_kfree(card->dev, (void *)w_param_text[count]);
3472 devm_kfree(card->dev, w_param_text);
3473
3474 return ret;
c74184ed
MB		 3475}
3476
888df395
MB		 3477int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context *dapm,
3478 struct snd_soc_dai *dai)
2b97eabc 3479{
888df395 3480 struct snd_soc_dapm_widget template;
2b97eabc
RP		 3481 struct snd_soc_dapm_widget *w;
3482
888df395
MB		 3483 WARN_ON(dapm->dev != dai->dev);
3484
3485 memset(&template, 0, sizeof(template));
3486 template.reg = SND_SOC_NOPM;
3487
3488 if (dai->driver->playback.stream_name) {
4616274d 3489 template.id = snd_soc_dapm_dai_in;
888df395
MB		 3490 template.name = dai->driver->playback.stream_name;
3491 template.sname = dai->driver->playback.stream_name;
3492
30a6a1a4 3493 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
888df395
MB		 3494 template.name);
3495
3496 w = snd_soc_dapm_new_control(dapm, &template);
3497 if (!w) {
30a6a1a4 3498 dev_err(dapm->dev, "ASoC: Failed to create %s widget\n",
888df395 3499 dai->driver->playback.stream_name);
298402a3 3500 return -ENOMEM;
888df395
MB		 3501 }
3502
3503 w->priv = dai;
3504 dai->playback_widget = w;
3505 }
3506
3507 if (dai->driver->capture.stream_name) {
4616274d 3508 template.id = snd_soc_dapm_dai_out;
888df395
MB		 3509 template.name = dai->driver->capture.stream_name;
3510 template.sname = dai->driver->capture.stream_name;
3511
30a6a1a4 3512 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
888df395
MB		 3513 template.name);
3514
3515 w = snd_soc_dapm_new_control(dapm, &template);
3516 if (!w) {
30a6a1a4 3517 dev_err(dapm->dev, "ASoC: Failed to create %s widget\n",
888df395 3518 dai->driver->capture.stream_name);
298402a3 3519 return -ENOMEM;
888df395
MB		 3520 }
3521
3522 w->priv = dai;
3523 dai->capture_widget = w;
3524 }
3525
3526 return 0;
3527}
3528
3529int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card)
3530{
3531 struct snd_soc_dapm_widget *dai_w, *w;
0f9bd7b1 3532 struct snd_soc_dapm_widget *src, *sink;
888df395 3533 struct snd_soc_dai *dai;
888df395
MB		 3534
3535 /* For each DAI widget... */
3536 list_for_each_entry(dai_w, &card->widgets, list) {
4616274d
MB		 3537 switch (dai_w->id) {
3538 case snd_soc_dapm_dai_in:
3539 case snd_soc_dapm_dai_out:
3540 break;
3541 default:
2b97eabc 3542 continue;
4616274d 3543 }
888df395
MB		 3544
3545 dai = dai_w->priv;
3546
3547 /* ...find all widgets with the same stream and link them */
3548 list_for_each_entry(w, &card->widgets, list) {
3549 if (w->dapm != dai_w->dapm)
3550 continue;
3551
4616274d
MB		 3552 switch (w->id) {
3553 case snd_soc_dapm_dai_in:
3554 case snd_soc_dapm_dai_out:
888df395 3555 continue;
4616274d
MB		 3556 default:
3557 break;
3558 }
888df395 3559
19c2c5f5 3560 if (!w->sname || !strstr(w->sname, dai_w->name))
888df395
MB		 3561 continue;
3562
0f9bd7b1
LPC		 3563 if (dai_w->id == snd_soc_dapm_dai_in) {
3564 src = dai_w;
3565 sink = w;
3566 } else {
3567 src = w;
3568 sink = dai_w;
2b97eabc 3569 }
0f9bd7b1
LPC		 3570 dev_dbg(dai->dev, "%s -> %s\n", src->name, sink->name);
3571 snd_soc_dapm_add_path(w->dapm, src, sink, NULL, NULL);
2b97eabc
RP		 3572 }
3573 }
2b97eabc 3574
888df395
MB		 3575 return 0;
3576}
64a648c2 3577
44ba2641
BC		 3578static void dapm_connect_dai_link_widgets(struct snd_soc_card *card,
3579 struct snd_soc_pcm_runtime *rtd)
b893ea5f 3580{
44ba2641 3581 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
9887c20b 3582 struct snd_soc_dapm_widget *sink, *source;
b893ea5f
LG		 3583 int i;
3584
44ba2641
BC		 3585 for (i = 0; i < rtd->num_codecs; i++) {
3586 struct snd_soc_dai *codec_dai = rtd->codec_dais[i];
b893ea5f
LG		 3587
3588 /* there is no point in connecting BE DAI links with dummies */
3589 if (snd_soc_dai_is_dummy(codec_dai) ||
3590 snd_soc_dai_is_dummy(cpu_dai))
3591 continue;
3592
3593 /* connect BE DAI playback if widgets are valid */
3594 if (codec_dai->playback_widget && cpu_dai->playback_widget) {
9887c20b
LPC		 3595 source = cpu_dai->playback_widget;
3596 sink = codec_dai->playback_widget;
b893ea5f 3597 dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n",
f4333203
LPC		 3598 cpu_dai->component->name, source->name,
3599 codec_dai->component->name, sink->name);
b893ea5f 3600
9887c20b
LPC		 3601 snd_soc_dapm_add_path(&card->dapm, source, sink,
3602 NULL, NULL);
b893ea5f
LG		 3603 }
3604
3605 /* connect BE DAI capture if widgets are valid */
3606 if (codec_dai->capture_widget && cpu_dai->capture_widget) {
9887c20b
LPC		 3607 source = codec_dai->capture_widget;
3608 sink = cpu_dai->capture_widget;
b893ea5f 3609 dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n",
f4333203
LPC		 3610 codec_dai->component->name, source->name,
3611 cpu_dai->component->name, sink->name);
b893ea5f 3612
9887c20b
LPC		 3613 snd_soc_dapm_add_path(&card->dapm, source, sink,
3614 NULL, NULL);
b893ea5f 3615 }
b893ea5f
LG		 3616 }
3617}
3618
c471fdd1 3619static void soc_dapm_dai_stream_event(struct snd_soc_dai *dai, int stream,
d9b0951b 3620 int event)
2b97eabc 3621{
c471fdd1 3622 struct snd_soc_dapm_widget *w;
7bd3a6f3 3623
c471fdd1
LPC		 3624 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
3625 w = dai->playback_widget;
3626 else
3627 w = dai->capture_widget;
fe360685 3628
c471fdd1
LPC		 3629 if (w) {
3630 dapm_mark_dirty(w, "stream event");
d9b0951b
LG		 3631
3632 switch (event) {
3633 case SND_SOC_DAPM_STREAM_START:
c471fdd1 3634 w->active = 1;
d9b0951b
LG		 3635 break;
3636 case SND_SOC_DAPM_STREAM_STOP:
c471fdd1 3637 w->active = 0;
d9b0951b
LG		 3638 break;
3639 case SND_SOC_DAPM_STREAM_SUSPEND:
3640 case SND_SOC_DAPM_STREAM_RESUME:
3641 case SND_SOC_DAPM_STREAM_PAUSE_PUSH:
3642 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE:
3643 break;
3644 }
6dd98b0a 3645
92a99ea4 3646 if (w->id == snd_soc_dapm_dai_in) {
6dd98b0a 3647 w->is_source = w->active;
92a99ea4
LPC		 3648 dapm_widget_invalidate_input_paths(w);
3649 } else {
6dd98b0a 3650 w->is_sink = w->active;
92a99ea4
LPC		 3651 dapm_widget_invalidate_output_paths(w);
3652 }
d9b0951b 3653 }
c471fdd1 3654}
d9b0951b 3655
44ba2641
BC		 3656void snd_soc_dapm_connect_dai_link_widgets(struct snd_soc_card *card)
3657{
3658 struct snd_soc_pcm_runtime *rtd = card->rtd;
3659 int i;
3660
3661 /* for each BE DAI link... */
3662 for (i = 0; i < card->num_rtd; i++) {
3663 rtd = &card->rtd[i];
3664
3665 /*
3666 * dynamic FE links have no fixed DAI mapping.
3667 * CODEC<->CODEC links have no direct connection.
3668 */
3669 if (rtd->dai_link->dynamic || rtd->dai_link->params)
3670 continue;
3671
3672 dapm_connect_dai_link_widgets(card, rtd);
3673 }
3674}
3675
c471fdd1
LPC		 3676static void soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
3677 int event)
3678{
44ba2641
BC		 3679 int i;
3680
c471fdd1 3681 soc_dapm_dai_stream_event(rtd->cpu_dai, stream, event);
44ba2641
BC		 3682 for (i = 0; i < rtd->num_codecs; i++)
3683 soc_dapm_dai_stream_event(rtd->codec_dais[i], stream, event);
2b97eabc 3684
95dd5cd6 3685 dapm_power_widgets(rtd->card, event);
ce6120cc
LG		 3686}
3687
3688/**
3689 * snd_soc_dapm_stream_event - send a stream event to the dapm core
3690 * @rtd: PCM runtime data
3691 * @stream: stream name
3692 * @event: stream event
3693 *
3694 * Sends a stream event to the dapm core. The core then makes any
3695 * necessary widget power changes.
3696 *
3697 * Returns 0 for success else error.
3698 */
d9b0951b
LG		 3699void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
3700 int event)
ce6120cc 3701{
a73fb2df 3702 struct snd_soc_card *card = rtd->card;
ce6120cc 3703
3cd04343 3704 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
d9b0951b 3705 soc_dapm_stream_event(rtd, stream, event);
a73fb2df 3706 mutex_unlock(&card->dapm_mutex);
2b97eabc 3707}
2b97eabc 3708
11391100
CK		 3709/**
3710 * snd_soc_dapm_enable_pin_unlocked - enable pin.
3711 * @dapm: DAPM context
3712 * @pin: pin name
3713 *
3714 * Enables input/output pin and its parents or children widgets iff there is
3715 * a valid audio route and active audio stream.
3716 *
3717 * Requires external locking.
3718 *
3719 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3720 * do any widget power switching.
3721 */
3722int snd_soc_dapm_enable_pin_unlocked(struct snd_soc_dapm_context *dapm,
3723 const char *pin)
3724{
3725 return snd_soc_dapm_set_pin(dapm, pin, 1);
3726}
3727EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin_unlocked);
3728
2b97eabc 3729/**
a5302181 3730 * snd_soc_dapm_enable_pin - enable pin.
ce6120cc 3731 * @dapm: DAPM context
a5302181 3732 * @pin: pin name
2b97eabc 3733 *
74b8f955 3734 * Enables input/output pin and its parents or children widgets iff there is
a5302181 3735 * a valid audio route and active audio stream.
11391100 3736 *
a5302181
LG		 3737 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3738 * do any widget power switching.
2b97eabc 3739 */
ce6120cc 3740int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin)
2b97eabc 3741{
11391100
CK		 3742 int ret;
3743
3744 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3745
3746 ret = snd_soc_dapm_set_pin(dapm, pin, 1);
3747
3748 mutex_unlock(&dapm->card->dapm_mutex);
3749
3750 return ret;
a5302181
LG		 3751}
3752EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin);
2b97eabc 3753
da34183e 3754/**
11391100 3755 * snd_soc_dapm_force_enable_pin_unlocked - force a pin to be enabled
ce6120cc 3756 * @dapm: DAPM context
da34183e
MB		 3757 * @pin: pin name
3758 *
3759 * Enables input/output pin regardless of any other state. This is
3760 * intended for use with microphone bias supplies used in microphone
3761 * jack detection.
3762 *
11391100
CK		 3763 * Requires external locking.
3764 *
da34183e
MB		 3765 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3766 * do any widget power switching.
3767 */
11391100
CK		 3768int snd_soc_dapm_force_enable_pin_unlocked(struct snd_soc_dapm_context *dapm,
3769 const char *pin)
da34183e 3770{
91a5fca4 3771 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
da34183e 3772
91a5fca4 3773 if (!w) {
30a6a1a4 3774 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
91a5fca4 3775 return -EINVAL;
0d86733c
MB		 3776 }
3777
30a6a1a4 3778 dev_dbg(w->dapm->dev, "ASoC: force enable pin %s\n", pin);
92a99ea4
LPC		 3779 if (!w->connected) {
3780 /*
3781 * w->force does not affect the number of input or output paths,
3782 * so we only have to recheck if w->connected is changed
3783 */
3784 dapm_widget_invalidate_input_paths(w);
3785 dapm_widget_invalidate_output_paths(w);
3786 w->connected = 1;
3787 }
91a5fca4 3788 w->force = 1;
75c1f891 3789 dapm_mark_dirty(w, "force enable");
da34183e 3790
91a5fca4 3791 return 0;
da34183e 3792}
11391100
CK		 3793EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin_unlocked);
3794
3795/**
3796 * snd_soc_dapm_force_enable_pin - force a pin to be enabled
3797 * @dapm: DAPM context
3798 * @pin: pin name
3799 *
3800 * Enables input/output pin regardless of any other state. This is
3801 * intended for use with microphone bias supplies used in microphone
3802 * jack detection.
3803 *
3804 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3805 * do any widget power switching.
3806 */
3807int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm,
3808 const char *pin)
3809{
3810 int ret;
3811
3812 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3813
3814 ret = snd_soc_dapm_force_enable_pin_unlocked(dapm, pin);
3815
3816 mutex_unlock(&dapm->card->dapm_mutex);
3817
3818 return ret;
3819}
da34183e
MB		 3820EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin);
3821
11391100
CK		 3822/**
3823 * snd_soc_dapm_disable_pin_unlocked - disable pin.
3824 * @dapm: DAPM context
3825 * @pin: pin name
3826 *
3827 * Disables input/output pin and its parents or children widgets.
3828 *
3829 * Requires external locking.
3830 *
3831 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3832 * do any widget power switching.
3833 */
3834int snd_soc_dapm_disable_pin_unlocked(struct snd_soc_dapm_context *dapm,
3835 const char *pin)
3836{
3837 return snd_soc_dapm_set_pin(dapm, pin, 0);
3838}
3839EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin_unlocked);
3840
a5302181
LG		 3841/**
3842 * snd_soc_dapm_disable_pin - disable pin.
ce6120cc 3843 * @dapm: DAPM context
a5302181
LG		 3844 * @pin: pin name
3845 *
74b8f955 3846 * Disables input/output pin and its parents or children widgets.
11391100 3847 *
a5302181
LG		 3848 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3849 * do any widget power switching.
3850 */
ce6120cc
LG		 3851int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm,
3852 const char *pin)
a5302181 3853{
11391100
CK		 3854 int ret;
3855
3856 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3857
3858 ret = snd_soc_dapm_set_pin(dapm, pin, 0);
3859
3860 mutex_unlock(&dapm->card->dapm_mutex);
3861
3862 return ret;
2b97eabc 3863}
a5302181 3864EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin);
2b97eabc 3865
11391100
CK		 3866/**
3867 * snd_soc_dapm_nc_pin_unlocked - permanently disable pin.
3868 * @dapm: DAPM context
3869 * @pin: pin name
3870 *
3871 * Marks the specified pin as being not connected, disabling it along
3872 * any parent or child widgets. At present this is identical to
3873 * snd_soc_dapm_disable_pin() but in future it will be extended to do
3874 * additional things such as disabling controls which only affect
3875 * paths through the pin.
3876 *
3877 * Requires external locking.
3878 *
3879 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3880 * do any widget power switching.
3881 */
3882int snd_soc_dapm_nc_pin_unlocked(struct snd_soc_dapm_context *dapm,
3883 const char *pin)
3884{
3885 return snd_soc_dapm_set_pin(dapm, pin, 0);
3886}
3887EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin_unlocked);
3888
5817b52a
MB		 3889/**
3890 * snd_soc_dapm_nc_pin - permanently disable pin.
ce6120cc 3891 * @dapm: DAPM context
5817b52a
MB		 3892 * @pin: pin name
3893 *
3894 * Marks the specified pin as being not connected, disabling it along
3895 * any parent or child widgets. At present this is identical to
3896 * snd_soc_dapm_disable_pin() but in future it will be extended to do
3897 * additional things such as disabling controls which only affect
3898 * paths through the pin.
3899 *
3900 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3901 * do any widget power switching.
3902 */
ce6120cc 3903int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin)
5817b52a 3904{
11391100
CK		 3905 int ret;
3906
3907 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3908
3909 ret = snd_soc_dapm_set_pin(dapm, pin, 0);
3910
3911 mutex_unlock(&dapm->card->dapm_mutex);
3912
3913 return ret;
5817b52a
MB		 3914}
3915EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin);
3916
eeec12bf 3917/**
a5302181 3918 * snd_soc_dapm_get_pin_status - get audio pin status
ce6120cc 3919 * @dapm: DAPM context
a5302181 3920 * @pin: audio signal pin endpoint (or start point)
eeec12bf 3921 *
a5302181 3922 * Get audio pin status - connected or disconnected.
eeec12bf 3923 *
a5302181 3924 * Returns 1 for connected otherwise 0.
eeec12bf 3925 */
ce6120cc
LG		 3926int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm,
3927 const char *pin)
eeec12bf 3928{
91a5fca4 3929 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
eeec12bf 3930
91a5fca4
LPC		 3931 if (w)
3932 return w->connected;
a68b38ad 3933
eeec12bf
GG		 3934 return 0;
3935}
a5302181 3936EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status);
eeec12bf 3937
1547aba9
MB		 3938/**
3939 * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint
ce6120cc 3940 * @dapm: DAPM context
1547aba9
MB		 3941 * @pin: audio signal pin endpoint (or start point)
3942 *
3943 * Mark the given endpoint or pin as ignoring suspend. When the
3944 * system is disabled a path between two endpoints flagged as ignoring
3945 * suspend will not be disabled. The path must already be enabled via
3946 * normal means at suspend time, it will not be turned on if it was not
3947 * already enabled.
3948 */
ce6120cc
LG		 3949int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm,
3950 const char *pin)
1547aba9 3951{
91a5fca4 3952 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, false);
1547aba9 3953
91a5fca4 3954 if (!w) {
30a6a1a4 3955 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
91a5fca4 3956 return -EINVAL;
1547aba9
MB		 3957 }
3958
91a5fca4
LPC		 3959 w->ignore_suspend = 1;
3960
3961 return 0;
1547aba9
MB		 3962}
3963EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend);
3964
2b97eabc
RP		 3965/**
3966 * snd_soc_dapm_free - free dapm resources
728a5222 3967 * @dapm: DAPM context
2b97eabc
RP		 3968 *
3969 * Free all dapm widgets and resources.
3970 */
ce6120cc 3971void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm)
2b97eabc 3972{
6c45e126 3973 dapm_debugfs_cleanup(dapm);
ce6120cc 3974 dapm_free_widgets(dapm);
7be31be8 3975 list_del(&dapm->list);
2b97eabc
RP		 3976}
3977EXPORT_SYMBOL_GPL(snd_soc_dapm_free);
3978
57996358 3979static void soc_dapm_shutdown_dapm(struct snd_soc_dapm_context *dapm)
51737470 3980{
01005a72 3981 struct snd_soc_card *card = dapm->card;
51737470
MB		 3982 struct snd_soc_dapm_widget *w;
3983 LIST_HEAD(down_list);
3984 int powerdown = 0;
3985
01005a72
LG		 3986 mutex_lock(&card->dapm_mutex);
3987
97c866de
JN		 3988 list_for_each_entry(w, &dapm->card->widgets, list) {
3989 if (w->dapm != dapm)
3990 continue;
51737470 3991 if (w->power) {
828a842f 3992 dapm_seq_insert(w, &down_list, false);
c2caa4da 3993 w->power = 0;
51737470
MB		 3994 powerdown = 1;
3995 }
3996 }
3997
3998 /* If there were no widgets to power down we're already in
3999 * standby.
4000 */
4001 if (powerdown) {
7679e42e
MB		 4002 if (dapm->bias_level == SND_SOC_BIAS_ON)
4003 snd_soc_dapm_set_bias_level(dapm,
4004 SND_SOC_BIAS_PREPARE);
95dd5cd6 4005 dapm_seq_run(card, &down_list, 0, false);
7679e42e
MB		 4006 if (dapm->bias_level == SND_SOC_BIAS_PREPARE)
4007 snd_soc_dapm_set_bias_level(dapm,
4008 SND_SOC_BIAS_STANDBY);
51737470 4009 }
01005a72
LG		 4010
4011 mutex_unlock(&card->dapm_mutex);
f0fba2ad
LG		 4012}
4013
4014/*
4015 * snd_soc_dapm_shutdown - callback for system shutdown
4016 */
4017void snd_soc_dapm_shutdown(struct snd_soc_card *card)
4018{
57996358 4019 struct snd_soc_dapm_context *dapm;
f0fba2ad 4020
57996358 4021 list_for_each_entry(dapm, &card->dapm_list, list) {
17282ba4
XX		 4022 if (dapm != &card->dapm) {
4023 soc_dapm_shutdown_dapm(dapm);
4024 if (dapm->bias_level == SND_SOC_BIAS_STANDBY)
4025 snd_soc_dapm_set_bias_level(dapm,
4026 SND_SOC_BIAS_OFF);
4027 }
ce6120cc 4028 }
17282ba4
XX		 4029
4030 soc_dapm_shutdown_dapm(&card->dapm);
4031 if (card->dapm.bias_level == SND_SOC_BIAS_STANDBY)
4032 snd_soc_dapm_set_bias_level(&card->dapm,
4033 SND_SOC_BIAS_OFF);
51737470
MB		 4034}
4035
2b97eabc 4036/* Module information */
d331124d 4037MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
2b97eabc
RP		 4038MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
4039MODULE_LICENSE("GPL");
Linux kernel - Deliverables
This page took 1.35433 seconds and 5 git commands to generate.