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Btrfs: fix missing check in the btrfs_qgroup_inherit()
[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
2b97eabc
RP		 50/* dapm power sequences - make this per codec in the future */
51static int dapm_up_seq[] = {
38357ab2
MB		 52 [snd_soc_dapm_pre] = 0,
53 [snd_soc_dapm_supply] = 1,
62ea874a 54 [snd_soc_dapm_regulator_supply] = 1,
d7e7eb91 55 [snd_soc_dapm_clock_supply] = 1,
38357ab2 56 [snd_soc_dapm_micbias] = 2,
c74184ed 57 [snd_soc_dapm_dai_link] = 2,
888df395 58 [snd_soc_dapm_dai] = 3,
010ff262
MB		 59 [snd_soc_dapm_aif_in] = 3,
60 [snd_soc_dapm_aif_out] = 3,
61 [snd_soc_dapm_mic] = 4,
62 [snd_soc_dapm_mux] = 5,
24ff33ac 63 [snd_soc_dapm_virt_mux] = 5,
010ff262
MB		 64 [snd_soc_dapm_value_mux] = 5,
65 [snd_soc_dapm_dac] = 6,
66 [snd_soc_dapm_mixer] = 7,
67 [snd_soc_dapm_mixer_named_ctl] = 7,
68 [snd_soc_dapm_pga] = 8,
69 [snd_soc_dapm_adc] = 9,
d88429a6 70 [snd_soc_dapm_out_drv] = 10,
010ff262
MB		 71 [snd_soc_dapm_hp] = 10,
72 [snd_soc_dapm_spk] = 10,
7e1f7c8a 73 [snd_soc_dapm_line] = 10,
010ff262 74 [snd_soc_dapm_post] = 11,
2b97eabc 75};
ca9c1aae 76
2b97eabc 77static int dapm_down_seq[] = {
38357ab2
MB		 78 [snd_soc_dapm_pre] = 0,
79 [snd_soc_dapm_adc] = 1,
80 [snd_soc_dapm_hp] = 2,
1ca04065 81 [snd_soc_dapm_spk] = 2,
7e1f7c8a 82 [snd_soc_dapm_line] = 2,
d88429a6 83 [snd_soc_dapm_out_drv] = 2,
38357ab2
MB		 84 [snd_soc_dapm_pga] = 4,
85 [snd_soc_dapm_mixer_named_ctl] = 5,
e3d4dabd
MB		 86 [snd_soc_dapm_mixer] = 5,
87 [snd_soc_dapm_dac] = 6,
88 [snd_soc_dapm_mic] = 7,
89 [snd_soc_dapm_micbias] = 8,
90 [snd_soc_dapm_mux] = 9,
24ff33ac 91 [snd_soc_dapm_virt_mux] = 9,
e3d4dabd 92 [snd_soc_dapm_value_mux] = 9,
010ff262
MB		 93 [snd_soc_dapm_aif_in] = 10,
94 [snd_soc_dapm_aif_out] = 10,
888df395 95 [snd_soc_dapm_dai] = 10,
c74184ed 96 [snd_soc_dapm_dai_link] = 11,
d7e7eb91 97 [snd_soc_dapm_clock_supply] = 12,
c74184ed
MB		 98 [snd_soc_dapm_regulator_supply] = 12,
99 [snd_soc_dapm_supply] = 12,
100 [snd_soc_dapm_post] = 13,
2b97eabc
RP		 101};
102
12ef193d 103static void pop_wait(u32 pop_time)
15e4c72f
MB		 104{
105 if (pop_time)
106 schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time));
107}
108
fd8d3bc0 109static void pop_dbg(struct device *dev, u32 pop_time, const char *fmt, ...)
15e4c72f
MB		 110{
111 va_list args;
fd8d3bc0 112 char *buf;
15e4c72f 113
fd8d3bc0
JN		 114 if (!pop_time)
115 return;
15e4c72f 116
fd8d3bc0
JN		 117 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
118 if (buf == NULL)
119 return;
15e4c72f 120
fd8d3bc0
JN		 121 va_start(args, fmt);
122 vsnprintf(buf, PAGE_SIZE, fmt, args);
9d01df06 123 dev_info(dev, "%s", buf);
15e4c72f 124 va_end(args);
fd8d3bc0
JN		 125
126 kfree(buf);
15e4c72f
MB		 127}
128
db432b41
MB		 129static bool dapm_dirty_widget(struct snd_soc_dapm_widget *w)
130{
131 return !list_empty(&w->dirty);
132}
133
25c77c5f 134void dapm_mark_dirty(struct snd_soc_dapm_widget *w, const char *reason)
db432b41 135{
75c1f891
MB		 136 if (!dapm_dirty_widget(w)) {
137 dev_vdbg(w->dapm->dev, "Marking %s dirty due to %s\n",
138 w->name, reason);
db432b41 139 list_add_tail(&w->dirty, &w->dapm->card->dapm_dirty);
75c1f891 140 }
db432b41 141}
25c77c5f 142EXPORT_SYMBOL_GPL(dapm_mark_dirty);
db432b41 143
e2d32ff6
MB		 144void dapm_mark_io_dirty(struct snd_soc_dapm_context *dapm)
145{
146 struct snd_soc_card *card = dapm->card;
147 struct snd_soc_dapm_widget *w;
148
149 mutex_lock(&card->dapm_mutex);
150
151 list_for_each_entry(w, &card->widgets, list) {
152 switch (w->id) {
153 case snd_soc_dapm_input:
154 case snd_soc_dapm_output:
155 dapm_mark_dirty(w, "Rechecking inputs and outputs");
156 break;
157 default:
158 break;
159 }
160 }
161
162 mutex_unlock(&card->dapm_mutex);
163}
164EXPORT_SYMBOL_GPL(dapm_mark_io_dirty);
165
2b97eabc 166/* create a new dapm widget */
88cb4290 167static inline struct snd_soc_dapm_widget *dapm_cnew_widget(
2b97eabc
RP		 168 const struct snd_soc_dapm_widget *_widget)
169{
88cb4290 170 return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL);
2b97eabc
RP		 171}
172
4805608a
LG		 173/* get snd_card from DAPM context */
174static inline struct snd_card *dapm_get_snd_card(
175 struct snd_soc_dapm_context *dapm)
176{
177 if (dapm->codec)
178 return dapm->codec->card->snd_card;
179 else if (dapm->platform)
180 return dapm->platform->card->snd_card;
181 else
182 BUG();
183
184 /* unreachable */
185 return NULL;
186}
187
188/* get soc_card from DAPM context */
189static inline struct snd_soc_card *dapm_get_soc_card(
190 struct snd_soc_dapm_context *dapm)
191{
192 if (dapm->codec)
193 return dapm->codec->card;
194 else if (dapm->platform)
195 return dapm->platform->card;
196 else
197 BUG();
198
199 /* unreachable */
200 return NULL;
201}
202
6c120e19
LG		 203static void dapm_reset(struct snd_soc_card *card)
204{
205 struct snd_soc_dapm_widget *w;
206
207 memset(&card->dapm_stats, 0, sizeof(card->dapm_stats));
208
209 list_for_each_entry(w, &card->widgets, list) {
210 w->power_checked = false;
211 w->inputs = -1;
212 w->outputs = -1;
213 }
214}
215
0445bdf4
LG		 216static int soc_widget_read(struct snd_soc_dapm_widget *w, int reg)
217{
218 if (w->codec)
219 return snd_soc_read(w->codec, reg);
b7950641
LG		 220 else if (w->platform)
221 return snd_soc_platform_read(w->platform, reg);
222
30a6a1a4 223 dev_err(w->dapm->dev, "ASoC: no valid widget read method\n");
b7950641 224 return -1;
0445bdf4
LG		 225}
226
227static int soc_widget_write(struct snd_soc_dapm_widget *w, int reg, int val)
228{
229 if (w->codec)
230 return snd_soc_write(w->codec, reg, val);
b7950641
LG		 231 else if (w->platform)
232 return snd_soc_platform_write(w->platform, reg, val);
233
30a6a1a4 234 dev_err(w->dapm->dev, "ASoC: no valid widget write method\n");
b7950641 235 return -1;
0445bdf4
LG		 236}
237
49575fb5
LG		 238static inline void soc_widget_lock(struct snd_soc_dapm_widget *w)
239{
e06ab3b8 240 if (w->codec && !w->codec->using_regmap)
49575fb5
LG		 241 mutex_lock(&w->codec->mutex);
242 else if (w->platform)
243 mutex_lock(&w->platform->mutex);
244}
245
246static inline void soc_widget_unlock(struct snd_soc_dapm_widget *w)
247{
e06ab3b8 248 if (w->codec && !w->codec->using_regmap)
49575fb5
LG		 249 mutex_unlock(&w->codec->mutex);
250 else if (w->platform)
251 mutex_unlock(&w->platform->mutex);
252}
253
254static int soc_widget_update_bits_locked(struct snd_soc_dapm_widget *w,
0445bdf4
LG		 255 unsigned short reg, unsigned int mask, unsigned int value)
256{
8a713da8 257 bool change;
0445bdf4
LG		 258 unsigned int old, new;
259 int ret;
260
8a713da8
MB		 261 if (w->codec && w->codec->using_regmap) {
262 ret = regmap_update_bits_check(w->codec->control_data,
263 reg, mask, value, &change);
264 if (ret != 0)
265 return ret;
266 } else {
49575fb5 267 soc_widget_lock(w);
8a713da8 268 ret = soc_widget_read(w, reg);
49575fb5
LG		 269 if (ret < 0) {
270 soc_widget_unlock(w);
0445bdf4 271 return ret;
49575fb5 272 }
8a713da8
MB		 273
274 old = ret;
275 new = (old & ~mask) | (value & mask);
276 change = old != new;
277 if (change) {
278 ret = soc_widget_write(w, reg, new);
49575fb5
LG		 279 if (ret < 0) {
280 soc_widget_unlock(w);
8a713da8 281 return ret;
49575fb5 282 }
8a713da8 283 }
49575fb5 284 soc_widget_unlock(w);
0445bdf4
LG		 285 }
286
287 return change;
288}
289
452c5eaa
MB		 290/**
291 * snd_soc_dapm_set_bias_level - set the bias level for the system
ed5a4c47 292 * @dapm: DAPM context
452c5eaa
MB		 293 * @level: level to configure
294 *
295 * Configure the bias (power) levels for the SoC audio device.
296 *
297 * Returns 0 for success else error.
298 */
ed5a4c47 299static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm,
ce6120cc 300 enum snd_soc_bias_level level)
452c5eaa 301{
ed5a4c47 302 struct snd_soc_card *card = dapm->card;
452c5eaa
MB		 303 int ret = 0;
304
84e90930
MB		 305 trace_snd_soc_bias_level_start(card, level);
306
f0fba2ad 307 if (card && card->set_bias_level)
d4c6005f 308 ret = card->set_bias_level(card, dapm, level);
171ec6b0
MB		 309 if (ret != 0)
310 goto out;
311
cc4c670a
MB		 312 if (dapm->codec) {
313 if (dapm->codec->driver->set_bias_level)
314 ret = dapm->codec->driver->set_bias_level(dapm->codec,
315 level);
d8c3bb91
MB		 316 else
317 dapm->bias_level = level;
4e872a46 318 } else if (!card || dapm != &card->dapm) {
4123128e 319 dapm->bias_level = level;
4e872a46 320 }
4123128e 321
171ec6b0
MB		 322 if (ret != 0)
323 goto out;
324
325 if (card && card->set_bias_level_post)
d4c6005f 326 ret = card->set_bias_level_post(card, dapm, level);
171ec6b0 327out:
84e90930
MB		 328 trace_snd_soc_bias_level_done(card, level);
329
452c5eaa
MB		 330 return ret;
331}
332
2b97eabc
RP		 333/* set up initial codec paths */
334static void dapm_set_path_status(struct snd_soc_dapm_widget *w,
335 struct snd_soc_dapm_path *p, int i)
336{
337 switch (w->id) {
338 case snd_soc_dapm_switch:
ca9c1aae
IM		 339 case snd_soc_dapm_mixer:
340 case snd_soc_dapm_mixer_named_ctl: {
2b97eabc 341 int val;
4eaa9819 342 struct soc_mixer_control *mc = (struct soc_mixer_control *)
82cfecdc 343 w->kcontrol_news[i].private_value;
815ecf8d
JS		 344 unsigned int reg = mc->reg;
345 unsigned int shift = mc->shift;
4eaa9819 346 int max = mc->max;
815ecf8d
JS		 347 unsigned int mask = (1 << fls(max)) - 1;
348 unsigned int invert = mc->invert;
2b97eabc 349
0445bdf4 350 val = soc_widget_read(w, reg);
2b97eabc 351 val = (val >> shift) & mask;
32fee7af
BT		 352 if (invert)
353 val = max - val;
2b97eabc 354
32fee7af 355 p->connect = !!val;
2b97eabc
RP		 356 }
357 break;
358 case snd_soc_dapm_mux: {
82cfecdc
SW		 359 struct soc_enum *e = (struct soc_enum *)
360 w->kcontrol_news[i].private_value;
86767b7d 361 int val, item;
2b97eabc 362
0445bdf4 363 val = soc_widget_read(w, e->reg);
86767b7d 364 item = (val >> e->shift_l) & e->mask;
2b97eabc
RP		 365
366 p->connect = 0;
f8ba0b7b 367 for (i = 0; i < e->max; i++) {
2b97eabc
RP		 368 if (!(strcmp(p->name, e->texts[i])) && item == i)
369 p->connect = 1;
370 }
371 }
372 break;
24ff33ac 373 case snd_soc_dapm_virt_mux: {
82cfecdc
SW		 374 struct soc_enum *e = (struct soc_enum *)
375 w->kcontrol_news[i].private_value;
24ff33ac
DP		 376
377 p->connect = 0;
378 /* since a virtual mux has no backing registers to
379 * decide which path to connect, it will try to match
380 * with the first enumeration. This is to ensure
381 * that the default mux choice (the first) will be
382 * correctly powered up during initialization.
383 */
384 if (!strcmp(p->name, e->texts[0]))
385 p->connect = 1;
386 }
387 break;
2e72f8e3 388 case snd_soc_dapm_value_mux: {
74155556 389 struct soc_enum *e = (struct soc_enum *)
82cfecdc 390 w->kcontrol_news[i].private_value;
2e72f8e3
PU		 391 int val, item;
392
0445bdf4 393 val = soc_widget_read(w, e->reg);
2e72f8e3
PU		 394 val = (val >> e->shift_l) & e->mask;
395 for (item = 0; item < e->max; item++) {
396 if (val == e->values[item])
397 break;
398 }
399
400 p->connect = 0;
401 for (i = 0; i < e->max; i++) {
402 if (!(strcmp(p->name, e->texts[i])) && item == i)
403 p->connect = 1;
404 }
405 }
406 break;
56563100 407 /* does not affect routing - always connected */
2b97eabc 408 case snd_soc_dapm_pga:
d88429a6 409 case snd_soc_dapm_out_drv:
2b97eabc
RP		 410 case snd_soc_dapm_output:
411 case snd_soc_dapm_adc:
412 case snd_soc_dapm_input:
1ab97c8c 413 case snd_soc_dapm_siggen:
2b97eabc
RP		 414 case snd_soc_dapm_dac:
415 case snd_soc_dapm_micbias:
416 case snd_soc_dapm_vmid:
246d0a17 417 case snd_soc_dapm_supply:
62ea874a 418 case snd_soc_dapm_regulator_supply:
d7e7eb91 419 case snd_soc_dapm_clock_supply:
010ff262
MB		 420 case snd_soc_dapm_aif_in:
421 case snd_soc_dapm_aif_out:
888df395 422 case snd_soc_dapm_dai:
2b97eabc
RP		 423 case snd_soc_dapm_hp:
424 case snd_soc_dapm_mic:
425 case snd_soc_dapm_spk:
426 case snd_soc_dapm_line:
c74184ed 427 case snd_soc_dapm_dai_link:
56563100
MB		 428 p->connect = 1;
429 break;
430 /* does affect routing - dynamically connected */
2b97eabc
RP		 431 case snd_soc_dapm_pre:
432 case snd_soc_dapm_post:
433 p->connect = 0;
434 break;
435 }
436}
437
74b8f955 438/* connect mux widget to its interconnecting audio paths */
ce6120cc 439static int dapm_connect_mux(struct snd_soc_dapm_context *dapm,
2b97eabc
RP		 440 struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest,
441 struct snd_soc_dapm_path *path, const char *control_name,
442 const struct snd_kcontrol_new *kcontrol)
443{
444 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
445 int i;
446
f8ba0b7b 447 for (i = 0; i < e->max; i++) {
2b97eabc 448 if (!(strcmp(control_name, e->texts[i]))) {
8ddab3f5 449 list_add(&path->list, &dapm->card->paths);
2b97eabc
RP		 450 list_add(&path->list_sink, &dest->sources);
451 list_add(&path->list_source, &src->sinks);
452 path->name = (char*)e->texts[i];
453 dapm_set_path_status(dest, path, 0);
454 return 0;
455 }
456 }
457
458 return -ENODEV;
459}
460
74b8f955 461/* connect mixer widget to its interconnecting audio paths */
ce6120cc 462static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm,
2b97eabc
RP		 463 struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest,
464 struct snd_soc_dapm_path *path, const char *control_name)
465{
466 int i;
467
468 /* search for mixer kcontrol */
469 for (i = 0; i < dest->num_kcontrols; i++) {
82cfecdc 470 if (!strcmp(control_name, dest->kcontrol_news[i].name)) {
8ddab3f5 471 list_add(&path->list, &dapm->card->paths);
2b97eabc
RP		 472 list_add(&path->list_sink, &dest->sources);
473 list_add(&path->list_source, &src->sinks);
82cfecdc 474 path->name = dest->kcontrol_news[i].name;
2b97eabc
RP		 475 dapm_set_path_status(dest, path, i);
476 return 0;
477 }
478 }
479 return -ENODEV;
480}
481
af46800b 482static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context *dapm,
1007da06 483 struct snd_soc_dapm_widget *kcontrolw,
af46800b
SW		 484 const struct snd_kcontrol_new *kcontrol_new,
485 struct snd_kcontrol **kcontrol)
486{
487 struct snd_soc_dapm_widget *w;
488 int i;
489
490 *kcontrol = NULL;
491
492 list_for_each_entry(w, &dapm->card->widgets, list) {
1007da06
SW		 493 if (w == kcontrolw || w->dapm != kcontrolw->dapm)
494 continue;
af46800b
SW		 495 for (i = 0; i < w->num_kcontrols; i++) {
496 if (&w->kcontrol_news[i] == kcontrol_new) {
497 if (w->kcontrols)
498 *kcontrol = w->kcontrols[i];
499 return 1;
500 }
501 }
502 }
503
504 return 0;
505}
506
2b97eabc 507/* create new dapm mixer control */
4b80b8c2 508static int dapm_new_mixer(struct snd_soc_dapm_widget *w)
2b97eabc 509{
4b80b8c2 510 struct snd_soc_dapm_context *dapm = w->dapm;
2b97eabc 511 int i, ret = 0;
3e5ff4df 512 size_t name_len, prefix_len;
2b97eabc 513 struct snd_soc_dapm_path *path;
12ea2c78 514 struct snd_card *card = dapm->card->snd_card;
efb7ac3f 515 const char *prefix;
fafd2176
SW		 516 struct snd_soc_dapm_widget_list *wlist;
517 size_t wlistsize;
efb7ac3f
MB		 518
519 if (dapm->codec)
520 prefix = dapm->codec->name_prefix;
521 else
522 prefix = NULL;
2b97eabc 523
3e5ff4df
MB		 524 if (prefix)
525 prefix_len = strlen(prefix) + 1;
526 else
527 prefix_len = 0;
528
2b97eabc
RP		 529 /* add kcontrol */
530 for (i = 0; i < w->num_kcontrols; i++) {
531
532 /* match name */
533 list_for_each_entry(path, &w->sources, list_sink) {
534
535 /* mixer/mux paths name must match control name */
82cfecdc 536 if (path->name != (char *)w->kcontrol_news[i].name)
2b97eabc
RP		 537 continue;
538
82cd8764
LPC		 539 if (w->kcontrols[i]) {
540 path->kcontrol = w->kcontrols[i];
541 continue;
542 }
543
fafd2176
SW		 544 wlistsize = sizeof(struct snd_soc_dapm_widget_list) +
545 sizeof(struct snd_soc_dapm_widget *),
546 wlist = kzalloc(wlistsize, GFP_KERNEL);
547 if (wlist == NULL) {
548 dev_err(dapm->dev,
30a6a1a4 549 "ASoC: can't allocate widget list for %s\n",
fafd2176
SW		 550 w->name);
551 return -ENOMEM;
552 }
553 wlist->num_widgets = 1;
554 wlist->widgets[0] = w;
555
ca9c1aae
IM		 556 /* add dapm control with long name.
557 * for dapm_mixer this is the concatenation of the
558 * mixer and kcontrol name.
559 * for dapm_mixer_named_ctl this is simply the
560 * kcontrol name.
561 */
82cfecdc 562 name_len = strlen(w->kcontrol_news[i].name) + 1;
07495f3e 563 if (w->id != snd_soc_dapm_mixer_named_ctl)
ca9c1aae
IM		 564 name_len += 1 + strlen(w->name);
565
219b93f5 566 path->long_name = kmalloc(name_len, GFP_KERNEL);
ca9c1aae 567
fafd2176
SW		 568 if (path->long_name == NULL) {
569 kfree(wlist);
2b97eabc 570 return -ENOMEM;
fafd2176 571 }
2b97eabc 572
ca9c1aae 573 switch (w->id) {
ca9c1aae 574 default:
3e5ff4df
MB		 575 /* The control will get a prefix from
576 * the control creation process but
577 * we're also using the same prefix
578 * for widgets so cut the prefix off
579 * the front of the widget name.
580 */
888df395
MB		 581 snprintf((char *)path->long_name, name_len,
582 "%s %s", w->name + prefix_len,
82cfecdc 583 w->kcontrol_news[i].name);
07495f3e 584 break;
ca9c1aae 585 case snd_soc_dapm_mixer_named_ctl:
888df395
MB		 586 snprintf((char *)path->long_name, name_len,
587 "%s", w->kcontrol_news[i].name);
07495f3e 588 break;
ca9c1aae
IM		 589 }
590
888df395 591 ((char *)path->long_name)[name_len - 1] = '\0';
219b93f5 592
fafd2176
SW		 593 path->kcontrol = snd_soc_cnew(&w->kcontrol_news[i],
594 wlist, path->long_name,
595 prefix);
ce6120cc 596 ret = snd_ctl_add(card, path->kcontrol);
2b97eabc 597 if (ret < 0) {
30a6a1a4
LG		 598 dev_err(dapm->dev, "ASoC: failed to add widget"
599 " %s dapm kcontrol %s: %d\n",
600 w->name, path->long_name, ret);
fafd2176 601 kfree(wlist);
2b97eabc
RP		 602 kfree(path->long_name);
603 path->long_name = NULL;
604 return ret;
605 }
fad59888 606 w->kcontrols[i] = path->kcontrol;
2b97eabc
RP		 607 }
608 }
609 return ret;
610}
611
612/* create new dapm mux control */
4b80b8c2 613static int dapm_new_mux(struct snd_soc_dapm_widget *w)
2b97eabc 614{
4b80b8c2 615 struct snd_soc_dapm_context *dapm = w->dapm;
2b97eabc
RP		 616 struct snd_soc_dapm_path *path = NULL;
617 struct snd_kcontrol *kcontrol;
12ea2c78 618 struct snd_card *card = dapm->card->snd_card;
efb7ac3f 619 const char *prefix;
3e5ff4df 620 size_t prefix_len;
af46800b 621 int ret;
fafd2176 622 struct snd_soc_dapm_widget_list *wlist;
af46800b 623 int shared, wlistentries;
fafd2176 624 size_t wlistsize;
888df395 625 const char *name;
2b97eabc 626
af46800b
SW		 627 if (w->num_kcontrols != 1) {
628 dev_err(dapm->dev,
30a6a1a4 629 "ASoC: mux %s has incorrect number of controls\n",
af46800b 630 w->name);
2b97eabc
RP		 631 return -EINVAL;
632 }
633
1007da06 634 shared = dapm_is_shared_kcontrol(dapm, w, &w->kcontrol_news[0],
af46800b
SW		 635 &kcontrol);
636 if (kcontrol) {
637 wlist = kcontrol->private_data;
638 wlistentries = wlist->num_widgets + 1;
639 } else {
640 wlist = NULL;
641 wlistentries = 1;
642 }
fafd2176 643 wlistsize = sizeof(struct snd_soc_dapm_widget_list) +
af46800b
SW		 644 wlistentries * sizeof(struct snd_soc_dapm_widget *),
645 wlist = krealloc(wlist, wlistsize, GFP_KERNEL);
fafd2176
SW		 646 if (wlist == NULL) {
647 dev_err(dapm->dev,
30a6a1a4 648 "ASoC: can't allocate widget list for %s\n", w->name);
fafd2176
SW		 649 return -ENOMEM;
650 }
af46800b
SW		 651 wlist->num_widgets = wlistentries;
652 wlist->widgets[wlistentries - 1] = w;
efb7ac3f 653
af46800b
SW		 654 if (!kcontrol) {
655 if (dapm->codec)
656 prefix = dapm->codec->name_prefix;
657 else
658 prefix = NULL;
659
660 if (shared) {
661 name = w->kcontrol_news[0].name;
662 prefix_len = 0;
663 } else {
664 name = w->name;
665 if (prefix)
666 prefix_len = strlen(prefix) + 1;
667 else
668 prefix_len = 0;
669 }
3e5ff4df 670
af46800b
SW		 671 /*
672 * The control will get a prefix from the control creation
673 * process but we're also using the same prefix for widgets so
674 * cut the prefix off the front of the widget name.
675 */
676 kcontrol = snd_soc_cnew(&w->kcontrol_news[0], wlist,
677 name + prefix_len, prefix);
678 ret = snd_ctl_add(card, kcontrol);
679 if (ret < 0) {
30a6a1a4 680 dev_err(dapm->dev, "ASoC: failed to add kcontrol %s: %d\n",
53daf208 681 w->name, ret);
af46800b
SW		 682 kfree(wlist);
683 return ret;
684 }
685 }
ce6120cc 686
af46800b 687 kcontrol->private_data = wlist;
2b97eabc 688
fad59888
SW		 689 w->kcontrols[0] = kcontrol;
690
2b97eabc
RP		 691 list_for_each_entry(path, &w->sources, list_sink)
692 path->kcontrol = kcontrol;
693
af46800b 694 return 0;
2b97eabc
RP		 695}
696
697/* create new dapm volume control */
4b80b8c2 698static int dapm_new_pga(struct snd_soc_dapm_widget *w)
2b97eabc 699{
a6c65736 700 if (w->num_kcontrols)
f7d41ae8 701 dev_err(w->dapm->dev,
30a6a1a4 702 "ASoC: PGA controls not supported: '%s'\n", w->name);
2b97eabc 703
a6c65736 704 return 0;
2b97eabc
RP		 705}
706
707/* reset 'walked' bit for each dapm path */
ce6120cc 708static inline void dapm_clear_walk(struct snd_soc_dapm_context *dapm)
2b97eabc
RP		 709{
710 struct snd_soc_dapm_path *p;
711
8ddab3f5 712 list_for_each_entry(p, &dapm->card->paths, list)
2b97eabc
RP		 713 p->walked = 0;
714}
715
9949788b
MB		 716/* We implement power down on suspend by checking the power state of
717 * the ALSA card - when we are suspending the ALSA state for the card
718 * is set to D3.
719 */
720static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget)
721{
12ea2c78 722 int level = snd_power_get_state(widget->dapm->card->snd_card);
9949788b 723
f0fba2ad 724 switch (level) {
9949788b
MB		 725 case SNDRV_CTL_POWER_D3hot:
726 case SNDRV_CTL_POWER_D3cold:
1547aba9 727 if (widget->ignore_suspend)
30a6a1a4 728 dev_dbg(widget->dapm->dev, "ASoC: %s ignoring suspend\n",
f7d41ae8 729 widget->name);
1547aba9 730 return widget->ignore_suspend;
9949788b
MB		 731 default:
732 return 1;
733 }
734}
735
ec2e3031
LG		 736/* add widget to list if it's not already in the list */
737static int dapm_list_add_widget(struct snd_soc_dapm_widget_list **list,
738 struct snd_soc_dapm_widget *w)
739{
740 struct snd_soc_dapm_widget_list *wlist;
741 int wlistsize, wlistentries, i;
742
743 if (*list == NULL)
744 return -EINVAL;
745
746 wlist = *list;
747
748 /* is this widget already in the list */
749 for (i = 0; i < wlist->num_widgets; i++) {
750 if (wlist->widgets[i] == w)
751 return 0;
752 }
753
754 /* allocate some new space */
755 wlistentries = wlist->num_widgets + 1;
756 wlistsize = sizeof(struct snd_soc_dapm_widget_list) +
757 wlistentries * sizeof(struct snd_soc_dapm_widget *);
758 *list = krealloc(wlist, wlistsize, GFP_KERNEL);
759 if (*list == NULL) {
30a6a1a4 760 dev_err(w->dapm->dev, "ASoC: can't allocate widget list for %s\n",
ec2e3031
LG		 761 w->name);
762 return -ENOMEM;
763 }
764 wlist = *list;
765
766 /* insert the widget */
30a6a1a4 767 dev_dbg(w->dapm->dev, "ASoC: added %s in widget list pos %d\n",
ec2e3031
LG		 768 w->name, wlist->num_widgets);
769
770 wlist->widgets[wlist->num_widgets] = w;
771 wlist->num_widgets++;
772 return 1;
773}
774
2b97eabc
RP		 775/*
776 * Recursively check for a completed path to an active or physically connected
777 * output widget. Returns number of complete paths.
778 */
ec2e3031
LG		 779static int is_connected_output_ep(struct snd_soc_dapm_widget *widget,
780 struct snd_soc_dapm_widget_list **list)
2b97eabc
RP		 781{
782 struct snd_soc_dapm_path *path;
783 int con = 0;
784
024dc078
MB		 785 if (widget->outputs >= 0)
786 return widget->outputs;
787
de02d078
MB		 788 DAPM_UPDATE_STAT(widget, path_checks);
789
62ea874a
MB		 790 switch (widget->id) {
791 case snd_soc_dapm_supply:
792 case snd_soc_dapm_regulator_supply:
d7e7eb91 793 case snd_soc_dapm_clock_supply:
246d0a17 794 return 0;
62ea874a
MB		 795 default:
796 break;
797 }
246d0a17 798
010ff262
MB		 799 switch (widget->id) {
800 case snd_soc_dapm_adc:
801 case snd_soc_dapm_aif_out:
888df395 802 case snd_soc_dapm_dai:
024dc078
MB		 803 if (widget->active) {
804 widget->outputs = snd_soc_dapm_suspend_check(widget);
805 return widget->outputs;
806 }
010ff262
MB		 807 default:
808 break;
809 }
2b97eabc
RP		 810
811 if (widget->connected) {
812 /* connected pin ? */
024dc078
MB		 813 if (widget->id == snd_soc_dapm_output && !widget->ext) {
814 widget->outputs = snd_soc_dapm_suspend_check(widget);
815 return widget->outputs;
816 }
2b97eabc
RP		 817
818 /* connected jack or spk ? */
024dc078
MB		 819 if (widget->id == snd_soc_dapm_hp ||
820 widget->id == snd_soc_dapm_spk ||
821 (widget->id == snd_soc_dapm_line &&
822 !list_empty(&widget->sources))) {
823 widget->outputs = snd_soc_dapm_suspend_check(widget);
824 return widget->outputs;
825 }
2b97eabc
RP		 826 }
827
828 list_for_each_entry(path, &widget->sinks, list_source) {
e56235e0
MB		 829 DAPM_UPDATE_STAT(widget, neighbour_checks);
830
bf3a9e13
MB		 831 if (path->weak)
832 continue;
833
8af294b4
MB		 834 if (path->walking)
835 return 1;
836
2b97eabc
RP		 837 if (path->walked)
838 continue;
839
ec2e3031
LG		 840 trace_snd_soc_dapm_output_path(widget, path);
841
2b97eabc
RP		 842 if (path->sink && path->connect) {
843 path->walked = 1;
8af294b4 844 path->walking = 1;
ec2e3031
LG		 845
846 /* do we need to add this widget to the list ? */
847 if (list) {
848 int err;
849 err = dapm_list_add_widget(list, path->sink);
850 if (err < 0) {
30a6a1a4
LG		 851 dev_err(widget->dapm->dev,
852 "ASoC: could not add widget %s\n",
ec2e3031 853 widget->name);
8af294b4 854 path->walking = 0;
ec2e3031
LG		 855 return con;
856 }
857 }
858
859 con += is_connected_output_ep(path->sink, list);
8af294b4
MB		 860
861 path->walking = 0;
2b97eabc
RP		 862 }
863 }
864
024dc078
MB		 865 widget->outputs = con;
866
2b97eabc
RP		 867 return con;
868}
869
870/*
871 * Recursively check for a completed path to an active or physically connected
872 * input widget. Returns number of complete paths.
873 */
ec2e3031
LG		 874static int is_connected_input_ep(struct snd_soc_dapm_widget *widget,
875 struct snd_soc_dapm_widget_list **list)
2b97eabc
RP		 876{
877 struct snd_soc_dapm_path *path;
878 int con = 0;
879
024dc078
MB		 880 if (widget->inputs >= 0)
881 return widget->inputs;
882
de02d078
MB		 883 DAPM_UPDATE_STAT(widget, path_checks);
884
62ea874a
MB		 885 switch (widget->id) {
886 case snd_soc_dapm_supply:
887 case snd_soc_dapm_regulator_supply:
d7e7eb91 888 case snd_soc_dapm_clock_supply:
246d0a17 889 return 0;
62ea874a
MB		 890 default:
891 break;
892 }
246d0a17 893
2b97eabc 894 /* active stream ? */
010ff262
MB		 895 switch (widget->id) {
896 case snd_soc_dapm_dac:
897 case snd_soc_dapm_aif_in:
888df395 898 case snd_soc_dapm_dai:
024dc078
MB		 899 if (widget->active) {
900 widget->inputs = snd_soc_dapm_suspend_check(widget);
901 return widget->inputs;
902 }
010ff262
MB		 903 default:
904 break;
905 }
2b97eabc
RP		 906
907 if (widget->connected) {
908 /* connected pin ? */
024dc078
MB		 909 if (widget->id == snd_soc_dapm_input && !widget->ext) {
910 widget->inputs = snd_soc_dapm_suspend_check(widget);
911 return widget->inputs;
912 }
2b97eabc
RP		 913
914 /* connected VMID/Bias for lower pops */
024dc078
MB		 915 if (widget->id == snd_soc_dapm_vmid) {
916 widget->inputs = snd_soc_dapm_suspend_check(widget);
917 return widget->inputs;
918 }
2b97eabc
RP		 919
920 /* connected jack ? */
eaeae5d9 921 if (widget->id == snd_soc_dapm_mic ||
024dc078
MB		 922 (widget->id == snd_soc_dapm_line &&
923 !list_empty(&widget->sinks))) {
924 widget->inputs = snd_soc_dapm_suspend_check(widget);
925 return widget->inputs;
926 }
927
1ab97c8c
MB		 928 /* signal generator */
929 if (widget->id == snd_soc_dapm_siggen) {
930 widget->inputs = snd_soc_dapm_suspend_check(widget);
931 return widget->inputs;
932 }
2b97eabc
RP		 933 }
934
935 list_for_each_entry(path, &widget->sources, list_sink) {
e56235e0
MB		 936 DAPM_UPDATE_STAT(widget, neighbour_checks);
937
bf3a9e13
MB		 938 if (path->weak)
939 continue;
940
8af294b4
MB		 941 if (path->walking)
942 return 1;
943
2b97eabc
RP		 944 if (path->walked)
945 continue;
946
ec2e3031
LG		 947 trace_snd_soc_dapm_input_path(widget, path);
948
2b97eabc
RP		 949 if (path->source && path->connect) {
950 path->walked = 1;
8af294b4 951 path->walking = 1;
ec2e3031
LG		 952
953 /* do we need to add this widget to the list ? */
954 if (list) {
955 int err;
90c6ce0d 956 err = dapm_list_add_widget(list, path->source);
ec2e3031 957 if (err < 0) {
30a6a1a4
LG		 958 dev_err(widget->dapm->dev,
959 "ASoC: could not add widget %s\n",
ec2e3031 960 widget->name);
8af294b4 961 path->walking = 0;
ec2e3031
LG		 962 return con;
963 }
964 }
965
966 con += is_connected_input_ep(path->source, list);
8af294b4
MB		 967
968 path->walking = 0;
2b97eabc
RP		 969 }
970 }
971
024dc078
MB		 972 widget->inputs = con;
973
2b97eabc
RP		 974 return con;
975}
976
ec2e3031
LG		 977/**
978 * snd_soc_dapm_get_connected_widgets - query audio path and it's widgets.
979 * @dai: the soc DAI.
980 * @stream: stream direction.
981 * @list: list of active widgets for this stream.
982 *
983 * Queries DAPM graph as to whether an valid audio stream path exists for
984 * the initial stream specified by name. This takes into account
985 * current mixer and mux kcontrol settings. Creates list of valid widgets.
986 *
987 * Returns the number of valid paths or negative error.
988 */
989int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai *dai, int stream,
990 struct snd_soc_dapm_widget_list **list)
991{
992 struct snd_soc_card *card = dai->card;
993 int paths;
994
995 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
996 dapm_reset(card);
997
998 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
999 paths = is_connected_output_ep(dai->playback_widget, list);
1000 else
d298caae 1001 paths = is_connected_input_ep(dai->capture_widget, list);
ec2e3031
LG		 1002
1003 trace_snd_soc_dapm_connected(paths, stream);
1004 dapm_clear_walk(&card->dapm);
1005 mutex_unlock(&card->dapm_mutex);
1006
1007 return paths;
1008}
1009
e2be2ccf
JN		 1010/*
1011 * Handler for generic register modifier widget.
1012 */
1013int dapm_reg_event(struct snd_soc_dapm_widget *w,
1014 struct snd_kcontrol *kcontrol, int event)
1015{
1016 unsigned int val;
1017
1018 if (SND_SOC_DAPM_EVENT_ON(event))
1019 val = w->on_val;
1020 else
1021 val = w->off_val;
1022
49575fb5 1023 soc_widget_update_bits_locked(w, -(w->reg + 1),
e2be2ccf
JN		 1024 w->mask << w->shift, val << w->shift);
1025
1026 return 0;
1027}
11589418 1028EXPORT_SYMBOL_GPL(dapm_reg_event);
e2be2ccf 1029
62ea874a
MB		 1030/*
1031 * Handler for regulator supply widget.
1032 */
1033int dapm_regulator_event(struct snd_soc_dapm_widget *w,
1034 struct snd_kcontrol *kcontrol, int event)
1035{
c05b84d1
MB		 1036 int ret;
1037
1038 if (SND_SOC_DAPM_EVENT_ON(event)) {
1039 if (w->invert & SND_SOC_DAPM_REGULATOR_BYPASS) {
8784c77a 1040 ret = regulator_allow_bypass(w->regulator, false);
c05b84d1
MB		 1041 if (ret != 0)
1042 dev_warn(w->dapm->dev,
30a6a1a4 1043 "ASoC: Failed to bypass %s: %d\n",
c05b84d1
MB		 1044 w->name, ret);
1045 }
1046
a3cc056b 1047 return regulator_enable(w->regulator);
c05b84d1
MB		 1048 } else {
1049 if (w->invert & SND_SOC_DAPM_REGULATOR_BYPASS) {
8784c77a 1050 ret = regulator_allow_bypass(w->regulator, true);
c05b84d1
MB		 1051 if (ret != 0)
1052 dev_warn(w->dapm->dev,
30a6a1a4 1053 "ASoC: Failed to unbypass %s: %d\n",
c05b84d1
MB		 1054 w->name, ret);
1055 }
1056
a3cc056b 1057 return regulator_disable_deferred(w->regulator, w->shift);
c05b84d1 1058 }
62ea874a
MB		 1059}
1060EXPORT_SYMBOL_GPL(dapm_regulator_event);
1061
d7e7eb91
OL		 1062/*
1063 * Handler for clock supply widget.
1064 */
1065int dapm_clock_event(struct snd_soc_dapm_widget *w,
1066 struct snd_kcontrol *kcontrol, int event)
1067{
1068 if (!w->clk)
1069 return -EIO;
1070
ec02995a 1071#ifdef CONFIG_HAVE_CLK
d7e7eb91
OL		 1072 if (SND_SOC_DAPM_EVENT_ON(event)) {
1073 return clk_enable(w->clk);
1074 } else {
1075 clk_disable(w->clk);
1076 return 0;
1077 }
ec02995a 1078#endif
98b3cf12 1079 return 0;
d7e7eb91
OL		 1080}
1081EXPORT_SYMBOL_GPL(dapm_clock_event);
1082
d805002b
MB		 1083static int dapm_widget_power_check(struct snd_soc_dapm_widget *w)
1084{
9b8a83b2
MB		 1085 if (w->power_checked)
1086 return w->new_power;
1087
d805002b 1088 if (w->force)
9b8a83b2 1089 w->new_power = 1;
d805002b 1090 else
9b8a83b2
MB		 1091 w->new_power = w->power_check(w);
1092
1093 w->power_checked = true;
1094
1095 return w->new_power;
d805002b
MB		 1096}
1097
cd0f2d47
MB		 1098/* Generic check to see if a widget should be powered.
1099 */
1100static int dapm_generic_check_power(struct snd_soc_dapm_widget *w)
1101{
1102 int in, out;
1103
de02d078
MB		 1104 DAPM_UPDATE_STAT(w, power_checks);
1105
ec2e3031 1106 in = is_connected_input_ep(w, NULL);
ce6120cc 1107 dapm_clear_walk(w->dapm);
ec2e3031 1108 out = is_connected_output_ep(w, NULL);
ce6120cc 1109 dapm_clear_walk(w->dapm);
cd0f2d47
MB		 1110 return out != 0 && in != 0;
1111}
1112
888df395
MB		 1113static int dapm_dai_check_power(struct snd_soc_dapm_widget *w)
1114{
1115 DAPM_UPDATE_STAT(w, power_checks);
1116
1eee1b38
MB		 1117 if (w->active)
1118 return w->active;
1119
1120 return dapm_generic_check_power(w);
888df395
MB		 1121}
1122
6ea31b9f
MB		 1123/* Check to see if an ADC has power */
1124static int dapm_adc_check_power(struct snd_soc_dapm_widget *w)
1125{
1126 int in;
1127
de02d078
MB		 1128 DAPM_UPDATE_STAT(w, power_checks);
1129
6ea31b9f 1130 if (w->active) {
ec2e3031 1131 in = is_connected_input_ep(w, NULL);
ce6120cc 1132 dapm_clear_walk(w->dapm);
6ea31b9f
MB		 1133 return in != 0;
1134 } else {
1135 return dapm_generic_check_power(w);
1136 }
1137}
1138
1139/* Check to see if a DAC has power */
1140static int dapm_dac_check_power(struct snd_soc_dapm_widget *w)
1141{
1142 int out;
1143
de02d078
MB		 1144 DAPM_UPDATE_STAT(w, power_checks);
1145
6ea31b9f 1146 if (w->active) {
ec2e3031 1147 out = is_connected_output_ep(w, NULL);
ce6120cc 1148 dapm_clear_walk(w->dapm);
6ea31b9f
MB		 1149 return out != 0;
1150 } else {
1151 return dapm_generic_check_power(w);
1152 }
1153}
1154
246d0a17
MB		 1155/* Check to see if a power supply is needed */
1156static int dapm_supply_check_power(struct snd_soc_dapm_widget *w)
1157{
1158 struct snd_soc_dapm_path *path;
246d0a17 1159
de02d078
MB		 1160 DAPM_UPDATE_STAT(w, power_checks);
1161
246d0a17
MB		 1162 /* Check if one of our outputs is connected */
1163 list_for_each_entry(path, &w->sinks, list_source) {
a8fdac83
MB		 1164 DAPM_UPDATE_STAT(w, neighbour_checks);
1165
bf3a9e13
MB		 1166 if (path->weak)
1167 continue;
1168
215edda3
MB		 1169 if (path->connected &&
1170 !path->connected(path->source, path->sink))
1171 continue;
1172
3017358a
MB		 1173 if (!path->sink)
1174 continue;
1175
f68d7e16
MB		 1176 if (dapm_widget_power_check(path->sink))
1177 return 1;
246d0a17
MB		 1178 }
1179
ce6120cc 1180 dapm_clear_walk(w->dapm);
246d0a17 1181
f68d7e16 1182 return 0;
246d0a17
MB		 1183}
1184
35c64bca
MB		 1185static int dapm_always_on_check_power(struct snd_soc_dapm_widget *w)
1186{
1187 return 1;
1188}
1189
38357ab2
MB		 1190static int dapm_seq_compare(struct snd_soc_dapm_widget *a,
1191 struct snd_soc_dapm_widget *b,
828a842f 1192 bool power_up)
42aa3418 1193{
828a842f
MB		 1194 int *sort;
1195
1196 if (power_up)
1197 sort = dapm_up_seq;
1198 else
1199 sort = dapm_down_seq;
1200
38357ab2
MB		 1201 if (sort[a->id] != sort[b->id])
1202 return sort[a->id] - sort[b->id];
20e4859d
MB		 1203 if (a->subseq != b->subseq) {
1204 if (power_up)
1205 return a->subseq - b->subseq;
1206 else
1207 return b->subseq - a->subseq;
1208 }
b22ead2a
MB		 1209 if (a->reg != b->reg)
1210 return a->reg - b->reg;
84dab567
MB		 1211 if (a->dapm != b->dapm)
1212 return (unsigned long)a->dapm - (unsigned long)b->dapm;
42aa3418 1213
38357ab2
MB		 1214 return 0;
1215}
42aa3418 1216
38357ab2
MB		 1217/* Insert a widget in order into a DAPM power sequence. */
1218static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget,
1219 struct list_head *list,
828a842f 1220 bool power_up)
38357ab2
MB		 1221{
1222 struct snd_soc_dapm_widget *w;
1223
1224 list_for_each_entry(w, list, power_list)
828a842f 1225 if (dapm_seq_compare(new_widget, w, power_up) < 0) {
38357ab2
MB		 1226 list_add_tail(&new_widget->power_list, &w->power_list);
1227 return;
1228 }
1229
1230 list_add_tail(&new_widget->power_list, list);
1231}
1232
68f89ad8
MB		 1233static void dapm_seq_check_event(struct snd_soc_dapm_context *dapm,
1234 struct snd_soc_dapm_widget *w, int event)
1235{
1236 struct snd_soc_card *card = dapm->card;
1237 const char *ev_name;
1238 int power, ret;
1239
1240 switch (event) {
1241 case SND_SOC_DAPM_PRE_PMU:
1242 ev_name = "PRE_PMU";
1243 power = 1;
1244 break;
1245 case SND_SOC_DAPM_POST_PMU:
1246 ev_name = "POST_PMU";
1247 power = 1;
1248 break;
1249 case SND_SOC_DAPM_PRE_PMD:
1250 ev_name = "PRE_PMD";
1251 power = 0;
1252 break;
1253 case SND_SOC_DAPM_POST_PMD:
1254 ev_name = "POST_PMD";
1255 power = 0;
1256 break;
1257 default:
1258 BUG();
1259 return;
1260 }
1261
1262 if (w->power != power)
1263 return;
1264
1265 if (w->event && (w->event_flags & event)) {
1266 pop_dbg(dapm->dev, card->pop_time, "pop test : %s %s\n",
1267 w->name, ev_name);
84e90930 1268 trace_snd_soc_dapm_widget_event_start(w, event);
68f89ad8 1269 ret = w->event(w, NULL, event);
84e90930 1270 trace_snd_soc_dapm_widget_event_done(w, event);
68f89ad8 1271 if (ret < 0)
30a6a1a4 1272 dev_err(dapm->dev, "ASoC: %s: %s event failed: %d\n",
68f89ad8
MB		 1273 ev_name, w->name, ret);
1274 }
1275}
1276
b22ead2a 1277/* Apply the coalesced changes from a DAPM sequence */
ce6120cc 1278static void dapm_seq_run_coalesced(struct snd_soc_dapm_context *dapm,
b22ead2a 1279 struct list_head *pending)
163cac06 1280{
3a45b867 1281 struct snd_soc_card *card = dapm->card;
68f89ad8
MB		 1282 struct snd_soc_dapm_widget *w;
1283 int reg, power;
b22ead2a
MB		 1284 unsigned int value = 0;
1285 unsigned int mask = 0;
1286 unsigned int cur_mask;
1287
1288 reg = list_first_entry(pending, struct snd_soc_dapm_widget,
1289 power_list)->reg;
1290
1291 list_for_each_entry(w, pending, power_list) {
1292 cur_mask = 1 << w->shift;
1293 BUG_ON(reg != w->reg);
1294
1295 if (w->invert)
1296 power = !w->power;
1297 else
1298 power = w->power;
1299
1300 mask |= cur_mask;
1301 if (power)
1302 value |= cur_mask;
1303
fd8d3bc0 1304 pop_dbg(dapm->dev, card->pop_time,
b22ead2a
MB		 1305 "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
1306 w->name, reg, value, mask);
81628103 1307
68f89ad8
MB		 1308 /* Check for events */
1309 dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMU);
1310 dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMD);
81628103
MB		 1311 }
1312
1313 if (reg >= 0) {
29376bc7
MB		 1314 /* Any widget will do, they should all be updating the
1315 * same register.
1316 */
1317 w = list_first_entry(pending, struct snd_soc_dapm_widget,
1318 power_list);
1319
fd8d3bc0 1320 pop_dbg(dapm->dev, card->pop_time,
81628103 1321 "pop test : Applying 0x%x/0x%x to %x in %dms\n",
3a45b867
JN		 1322 value, mask, reg, card->pop_time);
1323 pop_wait(card->pop_time);
49575fb5 1324 soc_widget_update_bits_locked(w, reg, mask, value);
b22ead2a
MB		 1325 }
1326
81628103 1327 list_for_each_entry(w, pending, power_list) {
68f89ad8
MB		 1328 dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMU);
1329 dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMD);
81628103 1330 }
b22ead2a 1331}
42aa3418 1332
b22ead2a
MB		 1333/* Apply a DAPM power sequence.
1334 *
1335 * We walk over a pre-sorted list of widgets to apply power to. In
1336 * order to minimise the number of writes to the device required
1337 * multiple widgets will be updated in a single write where possible.
1338 * Currently anything that requires more than a single write is not
1339 * handled.
1340 */
ce6120cc 1341static void dapm_seq_run(struct snd_soc_dapm_context *dapm,
828a842f 1342 struct list_head *list, int event, bool power_up)
b22ead2a
MB		 1343{
1344 struct snd_soc_dapm_widget *w, *n;
1345 LIST_HEAD(pending);
1346 int cur_sort = -1;
20e4859d 1347 int cur_subseq = -1;
b22ead2a 1348 int cur_reg = SND_SOC_NOPM;
7be31be8 1349 struct snd_soc_dapm_context *cur_dapm = NULL;
474b62d6 1350 int ret, i;
828a842f
MB		 1351 int *sort;
1352
1353 if (power_up)
1354 sort = dapm_up_seq;
1355 else
1356 sort = dapm_down_seq;
163cac06 1357
b22ead2a
MB		 1358 list_for_each_entry_safe(w, n, list, power_list) {
1359 ret = 0;
1360
1361 /* Do we need to apply any queued changes? */
7be31be8 1362 if (sort[w->id] != cur_sort || w->reg != cur_reg ||
20e4859d 1363 w->dapm != cur_dapm || w->subseq != cur_subseq) {
b22ead2a 1364 if (!list_empty(&pending))
7be31be8 1365 dapm_seq_run_coalesced(cur_dapm, &pending);
b22ead2a 1366
474b62d6
MB		 1367 if (cur_dapm && cur_dapm->seq_notifier) {
1368 for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
1369 if (sort[i] == cur_sort)
1370 cur_dapm->seq_notifier(cur_dapm,
f85a9e0d
MB		 1371 i,
1372 cur_subseq);
474b62d6
MB		 1373 }
1374
b22ead2a
MB		 1375 INIT_LIST_HEAD(&pending);
1376 cur_sort = -1;
b0b3e6f8 1377 cur_subseq = INT_MIN;
b22ead2a 1378 cur_reg = SND_SOC_NOPM;
7be31be8 1379 cur_dapm = NULL;
b22ead2a
MB		 1380 }
1381
163cac06
MB		 1382 switch (w->id) {
1383 case snd_soc_dapm_pre:
1384 if (!w->event)
b22ead2a
MB		 1385 list_for_each_entry_safe_continue(w, n, list,
1386 power_list);
163cac06 1387
b22ead2a 1388 if (event == SND_SOC_DAPM_STREAM_START)
163cac06
MB		 1389 ret = w->event(w,
1390 NULL, SND_SOC_DAPM_PRE_PMU);
b22ead2a 1391 else if (event == SND_SOC_DAPM_STREAM_STOP)
163cac06
MB		 1392 ret = w->event(w,
1393 NULL, SND_SOC_DAPM_PRE_PMD);
163cac06
MB		 1394 break;
1395
1396 case snd_soc_dapm_post:
1397 if (!w->event)
b22ead2a
MB		 1398 list_for_each_entry_safe_continue(w, n, list,
1399 power_list);
163cac06 1400
b22ead2a 1401 if (event == SND_SOC_DAPM_STREAM_START)
163cac06
MB		 1402 ret = w->event(w,
1403 NULL, SND_SOC_DAPM_POST_PMU);
b22ead2a 1404 else if (event == SND_SOC_DAPM_STREAM_STOP)
163cac06
MB		 1405 ret = w->event(w,
1406 NULL, SND_SOC_DAPM_POST_PMD);
163cac06
MB		 1407 break;
1408
b22ead2a 1409 default:
81628103
MB		 1410 /* Queue it up for application */
1411 cur_sort = sort[w->id];
20e4859d 1412 cur_subseq = w->subseq;
81628103 1413 cur_reg = w->reg;
7be31be8 1414 cur_dapm = w->dapm;
81628103
MB		 1415 list_move(&w->power_list, &pending);
1416 break;
163cac06 1417 }
b22ead2a
MB		 1418
1419 if (ret < 0)
f7d41ae8 1420 dev_err(w->dapm->dev,
30a6a1a4 1421 "ASoC: Failed to apply widget power: %d\n", ret);
6ea31b9f 1422 }
b22ead2a
MB		 1423
1424 if (!list_empty(&pending))
28e86808 1425 dapm_seq_run_coalesced(cur_dapm, &pending);
474b62d6
MB		 1426
1427 if (cur_dapm && cur_dapm->seq_notifier) {
1428 for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
1429 if (sort[i] == cur_sort)
1430 cur_dapm->seq_notifier(cur_dapm,
f85a9e0d 1431 i, cur_subseq);
474b62d6 1432 }
42aa3418
MB		 1433}
1434
97404f2e
MB		 1435static void dapm_widget_update(struct snd_soc_dapm_context *dapm)
1436{
1437 struct snd_soc_dapm_update *update = dapm->update;
1438 struct snd_soc_dapm_widget *w;
1439 int ret;
1440
1441 if (!update)
1442 return;
1443
1444 w = update->widget;
1445
1446 if (w->event &&
1447 (w->event_flags & SND_SOC_DAPM_PRE_REG)) {
1448 ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG);
1449 if (ret != 0)
30a6a1a4 1450 dev_err(dapm->dev, "ASoC: %s DAPM pre-event failed: %d\n",
97404f2e
MB		 1451 w->name, ret);
1452 }
1453
49575fb5 1454 ret = soc_widget_update_bits_locked(w, update->reg, update->mask,
97404f2e
MB		 1455 update->val);
1456 if (ret < 0)
30a6a1a4
LG		 1457 dev_err(dapm->dev, "ASoC: %s DAPM update failed: %d\n",
1458 w->name, ret);
97404f2e
MB		 1459
1460 if (w->event &&
1461 (w->event_flags & SND_SOC_DAPM_POST_REG)) {
1462 ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG);
1463 if (ret != 0)
30a6a1a4 1464 dev_err(dapm->dev, "ASoC: %s DAPM post-event failed: %d\n",
97404f2e
MB		 1465 w->name, ret);
1466 }
1467}
1468
9d0624a7
MB		 1469/* Async callback run prior to DAPM sequences - brings to _PREPARE if
1470 * they're changing state.
1471 */
1472static void dapm_pre_sequence_async(void *data, async_cookie_t cookie)
1473{
1474 struct snd_soc_dapm_context *d = data;
1475 int ret;
1476
56fba41f
MB		 1477 /* If we're off and we're not supposed to be go into STANDBY */
1478 if (d->bias_level == SND_SOC_BIAS_OFF &&
1479 d->target_bias_level != SND_SOC_BIAS_OFF) {
f1aac484
MB		 1480 if (d->dev)
1481 pm_runtime_get_sync(d->dev);
1482
9d0624a7
MB		 1483 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1484 if (ret != 0)
1485 dev_err(d->dev,
30a6a1a4 1486 "ASoC: Failed to turn on bias: %d\n", ret);
9d0624a7
MB		 1487 }
1488
56fba41f
MB		 1489 /* Prepare for a STADDBY->ON or ON->STANDBY transition */
1490 if (d->bias_level != d->target_bias_level) {
9d0624a7
MB		 1491 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE);
1492 if (ret != 0)
1493 dev_err(d->dev,
30a6a1a4 1494 "ASoC: Failed to prepare bias: %d\n", ret);
9d0624a7
MB		 1495 }
1496}
1497
1498/* Async callback run prior to DAPM sequences - brings to their final
1499 * state.
1500 */
1501static void dapm_post_sequence_async(void *data, async_cookie_t cookie)
1502{
1503 struct snd_soc_dapm_context *d = data;
1504 int ret;
1505
1506 /* If we just powered the last thing off drop to standby bias */
56fba41f
MB		 1507 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1508 (d->target_bias_level == SND_SOC_BIAS_STANDBY ||
1509 d->target_bias_level == SND_SOC_BIAS_OFF)) {
9d0624a7
MB		 1510 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1511 if (ret != 0)
30a6a1a4 1512 dev_err(d->dev, "ASoC: Failed to apply standby bias: %d\n",
9d0624a7
MB		 1513 ret);
1514 }
97404f2e 1515
9d0624a7 1516 /* If we're in standby and can support bias off then do that */
56fba41f
MB		 1517 if (d->bias_level == SND_SOC_BIAS_STANDBY &&
1518 d->target_bias_level == SND_SOC_BIAS_OFF) {
9d0624a7
MB		 1519 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF);
1520 if (ret != 0)
30a6a1a4
LG		 1521 dev_err(d->dev, "ASoC: Failed to turn off bias: %d\n",
1522 ret);
f1aac484
MB		 1523
1524 if (d->dev)
fb644e9c 1525 pm_runtime_put(d->dev);
9d0624a7
MB		 1526 }
1527
1528 /* If we just powered up then move to active bias */
56fba41f
MB		 1529 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1530 d->target_bias_level == SND_SOC_BIAS_ON) {
9d0624a7
MB		 1531 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON);
1532 if (ret != 0)
30a6a1a4 1533 dev_err(d->dev, "ASoC: Failed to apply active bias: %d\n",
9d0624a7
MB		 1534 ret);
1535 }
1536}
97404f2e 1537
fe4fda5d
MB		 1538static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget *peer,
1539 bool power, bool connect)
1540{
1541 /* If a connection is being made or broken then that update
1542 * will have marked the peer dirty, otherwise the widgets are
1543 * not connected and this update has no impact. */
1544 if (!connect)
1545 return;
1546
1547 /* If the peer is already in the state we're moving to then we
1548 * won't have an impact on it. */
1549 if (power != peer->power)
75c1f891 1550 dapm_mark_dirty(peer, "peer state change");
fe4fda5d
MB		 1551}
1552
05623c43
MB		 1553static void dapm_widget_set_power(struct snd_soc_dapm_widget *w, bool power,
1554 struct list_head *up_list,
1555 struct list_head *down_list)
1556{
db432b41
MB		 1557 struct snd_soc_dapm_path *path;
1558
05623c43
MB		 1559 if (w->power == power)
1560 return;
1561
1562 trace_snd_soc_dapm_widget_power(w, power);
1563
db432b41 1564 /* If we changed our power state perhaps our neigbours changed
fe4fda5d 1565 * also.
db432b41
MB		 1566 */
1567 list_for_each_entry(path, &w->sources, list_sink) {
1568 if (path->source) {
fe4fda5d
MB		 1569 dapm_widget_set_peer_power(path->source, power,
1570 path->connect);
db432b41
MB		 1571 }
1572 }
f3bf3e45
MB		 1573 switch (w->id) {
1574 case snd_soc_dapm_supply:
62ea874a 1575 case snd_soc_dapm_regulator_supply:
d7e7eb91 1576 case snd_soc_dapm_clock_supply:
f3bf3e45
MB		 1577 /* Supplies can't affect their outputs, only their inputs */
1578 break;
1579 default:
1580 list_for_each_entry(path, &w->sinks, list_source) {
1581 if (path->sink) {
1582 dapm_widget_set_peer_power(path->sink, power,
1583 path->connect);
1584 }
db432b41 1585 }
f3bf3e45 1586 break;
db432b41
MB		 1587 }
1588
05623c43
MB		 1589 if (power)
1590 dapm_seq_insert(w, up_list, true);
1591 else
1592 dapm_seq_insert(w, down_list, false);
1593
1594 w->power = power;
1595}
1596
7c81beb0
MB		 1597static void dapm_power_one_widget(struct snd_soc_dapm_widget *w,
1598 struct list_head *up_list,
1599 struct list_head *down_list)
1600{
7c81beb0
MB		 1601 int power;
1602
1603 switch (w->id) {
1604 case snd_soc_dapm_pre:
1605 dapm_seq_insert(w, down_list, false);
1606 break;
1607 case snd_soc_dapm_post:
1608 dapm_seq_insert(w, up_list, true);
1609 break;
1610
1611 default:
d805002b 1612 power = dapm_widget_power_check(w);
7c81beb0 1613
05623c43 1614 dapm_widget_set_power(w, power, up_list, down_list);
7c81beb0
MB		 1615 break;
1616 }
1617}
1618
2b97eabc
RP		 1619/*
1620 * Scan each dapm widget for complete audio path.
1621 * A complete path is a route that has valid endpoints i.e.:-
1622 *
1623 * o DAC to output pin.
1624 * o Input Pin to ADC.
1625 * o Input pin to Output pin (bypass, sidetone)
1626 * o DAC to ADC (loopback).
1627 */
ce6120cc 1628static int dapm_power_widgets(struct snd_soc_dapm_context *dapm, int event)
2b97eabc 1629{
12ea2c78 1630 struct snd_soc_card *card = dapm->card;
2b97eabc 1631 struct snd_soc_dapm_widget *w;
7be31be8 1632 struct snd_soc_dapm_context *d;
291f3bbc
MB		 1633 LIST_HEAD(up_list);
1634 LIST_HEAD(down_list);
2955b47d 1635 ASYNC_DOMAIN_EXCLUSIVE(async_domain);
56fba41f 1636 enum snd_soc_bias_level bias;
6d3ddc81 1637
84e90930
MB		 1638 trace_snd_soc_dapm_start(card);
1639
56fba41f 1640 list_for_each_entry(d, &card->dapm_list, list) {
497098be
MB		 1641 if (d->idle_bias_off)
1642 d->target_bias_level = SND_SOC_BIAS_OFF;
1643 else
1644 d->target_bias_level = SND_SOC_BIAS_STANDBY;
56fba41f 1645 }
7be31be8 1646
6c120e19 1647 dapm_reset(card);
9b8a83b2 1648
6d3ddc81 1649 /* Check which widgets we need to power and store them in
db432b41
MB		 1650 * lists indicating if they should be powered up or down. We
1651 * only check widgets that have been flagged as dirty but note
1652 * that new widgets may be added to the dirty list while we
1653 * iterate.
6d3ddc81 1654 */
db432b41 1655 list_for_each_entry(w, &card->dapm_dirty, dirty) {
7c81beb0 1656 dapm_power_one_widget(w, &up_list, &down_list);
2b97eabc
RP		 1657 }
1658
f9de6d74 1659 list_for_each_entry(w, &card->widgets, list) {
0ff97ebf
MB		 1660 switch (w->id) {
1661 case snd_soc_dapm_pre:
1662 case snd_soc_dapm_post:
1663 /* These widgets always need to be powered */
1664 break;
1665 default:
1666 list_del_init(&w->dirty);
1667 break;
1668 }
db432b41 1669
f9de6d74
MB		 1670 if (w->power) {
1671 d = w->dapm;
1672
1673 /* Supplies and micbiases only bring the
1674 * context up to STANDBY as unless something
1675 * else is active and passing audio they
afe62367
MB		 1676 * generally don't require full power. Signal
1677 * generators are virtual pins and have no
1678 * power impact themselves.
f9de6d74
MB		 1679 */
1680 switch (w->id) {
afe62367
MB		 1681 case snd_soc_dapm_siggen:
1682 break;
f9de6d74 1683 case snd_soc_dapm_supply:
62ea874a 1684 case snd_soc_dapm_regulator_supply:
d7e7eb91 1685 case snd_soc_dapm_clock_supply:
f9de6d74
MB		 1686 case snd_soc_dapm_micbias:
1687 if (d->target_bias_level < SND_SOC_BIAS_STANDBY)
1688 d->target_bias_level = SND_SOC_BIAS_STANDBY;
1689 break;
1690 default:
1691 d->target_bias_level = SND_SOC_BIAS_ON;
1692 break;
1693 }
1694 }
1695
1696 }
1697
85a843c5
MB		 1698 /* Force all contexts in the card to the same bias state if
1699 * they're not ground referenced.
1700 */
56fba41f 1701 bias = SND_SOC_BIAS_OFF;
52ba67bf 1702 list_for_each_entry(d, &card->dapm_list, list)
56fba41f
MB		 1703 if (d->target_bias_level > bias)
1704 bias = d->target_bias_level;
52ba67bf 1705 list_for_each_entry(d, &card->dapm_list, list)
85a843c5
MB		 1706 if (!d->idle_bias_off)
1707 d->target_bias_level = bias;
52ba67bf 1708
de02d078 1709 trace_snd_soc_dapm_walk_done(card);
52ba67bf 1710
9d0624a7
MB		 1711 /* Run all the bias changes in parallel */
1712 list_for_each_entry(d, &dapm->card->dapm_list, list)
1713 async_schedule_domain(dapm_pre_sequence_async, d,
1714 &async_domain);
1715 async_synchronize_full_domain(&async_domain);
452c5eaa 1716
6d3ddc81 1717 /* Power down widgets first; try to avoid amplifying pops. */
828a842f 1718 dapm_seq_run(dapm, &down_list, event, false);
2b97eabc 1719
97404f2e
MB		 1720 dapm_widget_update(dapm);
1721
6d3ddc81 1722 /* Now power up. */
828a842f 1723 dapm_seq_run(dapm, &up_list, event, true);
2b97eabc 1724
9d0624a7
MB		 1725 /* Run all the bias changes in parallel */
1726 list_for_each_entry(d, &dapm->card->dapm_list, list)
1727 async_schedule_domain(dapm_post_sequence_async, d,
1728 &async_domain);
1729 async_synchronize_full_domain(&async_domain);
452c5eaa 1730
8078d87f
LG		 1731 /* do we need to notify any clients that DAPM event is complete */
1732 list_for_each_entry(d, &card->dapm_list, list) {
1733 if (d->stream_event)
1734 d->stream_event(d, event);
1735 }
1736
fd8d3bc0
JN		 1737 pop_dbg(dapm->dev, card->pop_time,
1738 "DAPM sequencing finished, waiting %dms\n", card->pop_time);
3a45b867 1739 pop_wait(card->pop_time);
cb507e7e 1740
84e90930
MB		 1741 trace_snd_soc_dapm_done(card);
1742
42aa3418 1743 return 0;
2b97eabc
RP		 1744}
1745
79fb9387 1746#ifdef CONFIG_DEBUG_FS
79fb9387
MB		 1747static ssize_t dapm_widget_power_read_file(struct file *file,
1748 char __user *user_buf,
1749 size_t count, loff_t *ppos)
1750{
1751 struct snd_soc_dapm_widget *w = file->private_data;
1752 char *buf;
1753 int in, out;
1754 ssize_t ret;
1755 struct snd_soc_dapm_path *p = NULL;
1756
1757 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
1758 if (!buf)
1759 return -ENOMEM;
1760
ec2e3031 1761 in = is_connected_input_ep(w, NULL);
ce6120cc 1762 dapm_clear_walk(w->dapm);
ec2e3031 1763 out = is_connected_output_ep(w, NULL);
ce6120cc 1764 dapm_clear_walk(w->dapm);
79fb9387 1765
f13ebada
MB		 1766 ret = snprintf(buf, PAGE_SIZE, "%s: %s%s in %d out %d",
1767 w->name, w->power ? "On" : "Off",
1768 w->force ? " (forced)" : "", in, out);
79fb9387 1769
d033c36a
MB		 1770 if (w->reg >= 0)
1771 ret += snprintf(buf + ret, PAGE_SIZE - ret,
1772 " - R%d(0x%x) bit %d",
1773 w->reg, w->reg, w->shift);
1774
1775 ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n");
1776
3eef08ba
MB		 1777 if (w->sname)
1778 ret += snprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n",
1779 w->sname,
1780 w->active ? "active" : "inactive");
79fb9387
MB		 1781
1782 list_for_each_entry(p, &w->sources, list_sink) {
215edda3
MB		 1783 if (p->connected && !p->connected(w, p->sink))
1784 continue;
1785
79fb9387
MB		 1786 if (p->connect)
1787 ret += snprintf(buf + ret, PAGE_SIZE - ret,
67f5ed6e 1788 " in \"%s\" \"%s\"\n",
79fb9387
MB		 1789 p->name ? p->name : "static",
1790 p->source->name);
1791 }
1792 list_for_each_entry(p, &w->sinks, list_source) {
215edda3
MB		 1793 if (p->connected && !p->connected(w, p->sink))
1794 continue;
1795
79fb9387
MB		 1796 if (p->connect)
1797 ret += snprintf(buf + ret, PAGE_SIZE - ret,
67f5ed6e 1798 " out \"%s\" \"%s\"\n",
79fb9387
MB		 1799 p->name ? p->name : "static",
1800 p->sink->name);
1801 }
1802
1803 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
1804
1805 kfree(buf);
1806 return ret;
1807}
1808
1809static const struct file_operations dapm_widget_power_fops = {
234e3405 1810 .open = simple_open,
79fb9387 1811 .read = dapm_widget_power_read_file,
6038f373 1812 .llseek = default_llseek,
79fb9387
MB		 1813};
1814
ef49e4fa
MB		 1815static ssize_t dapm_bias_read_file(struct file *file, char __user *user_buf,
1816 size_t count, loff_t *ppos)
1817{
1818 struct snd_soc_dapm_context *dapm = file->private_data;
1819 char *level;
1820
1821 switch (dapm->bias_level) {
1822 case SND_SOC_BIAS_ON:
1823 level = "On\n";
1824 break;
1825 case SND_SOC_BIAS_PREPARE:
1826 level = "Prepare\n";
1827 break;
1828 case SND_SOC_BIAS_STANDBY:
1829 level = "Standby\n";
1830 break;
1831 case SND_SOC_BIAS_OFF:
1832 level = "Off\n";
1833 break;
1834 default:
1835 BUG();
1836 level = "Unknown\n";
1837 break;
1838 }
1839
1840 return simple_read_from_buffer(user_buf, count, ppos, level,
1841 strlen(level));
1842}
1843
1844static const struct file_operations dapm_bias_fops = {
234e3405 1845 .open = simple_open,
ef49e4fa
MB		 1846 .read = dapm_bias_read_file,
1847 .llseek = default_llseek,
1848};
1849
8eecaf62
LPC		 1850void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
1851 struct dentry *parent)
79fb9387 1852{
79fb9387
MB		 1853 struct dentry *d;
1854
8eecaf62
LPC		 1855 dapm->debugfs_dapm = debugfs_create_dir("dapm", parent);
1856
1857 if (!dapm->debugfs_dapm) {
f1e90af2 1858 dev_warn(dapm->dev,
30a6a1a4 1859 "ASoC: Failed to create DAPM debugfs directory\n");
79fb9387 1860 return;
8eecaf62 1861 }
79fb9387 1862
ef49e4fa
MB		 1863 d = debugfs_create_file("bias_level", 0444,
1864 dapm->debugfs_dapm, dapm,
1865 &dapm_bias_fops);
1866 if (!d)
1867 dev_warn(dapm->dev,
1868 "ASoC: Failed to create bias level debugfs file\n");
d5d1e0be 1869}
ef49e4fa 1870
d5d1e0be
LPC		 1871static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
1872{
1873 struct snd_soc_dapm_context *dapm = w->dapm;
1874 struct dentry *d;
79fb9387 1875
d5d1e0be
LPC		 1876 if (!dapm->debugfs_dapm || !w->name)
1877 return;
1878
1879 d = debugfs_create_file(w->name, 0444,
1880 dapm->debugfs_dapm, w,
1881 &dapm_widget_power_fops);
1882 if (!d)
1883 dev_warn(w->dapm->dev,
1884 "ASoC: Failed to create %s debugfs file\n",
1885 w->name);
79fb9387 1886}
d5d1e0be 1887
6c45e126
LPC		 1888static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
1889{
1890 debugfs_remove_recursive(dapm->debugfs_dapm);
1891}
1892
79fb9387 1893#else
8eecaf62
LPC		 1894void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
1895 struct dentry *parent)
79fb9387
MB		 1896{
1897}
d5d1e0be
LPC		 1898
1899static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
1900{
1901}
1902
6c45e126
LPC		 1903static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
1904{
1905}
1906
79fb9387
MB		 1907#endif
1908
2b97eabc 1909/* test and update the power status of a mux widget */
4edbb345 1910static int soc_dapm_mux_update_power(struct snd_soc_dapm_widget *widget,
40f02cd9 1911 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e)
2b97eabc
RP		 1912{
1913 struct snd_soc_dapm_path *path;
1914 int found = 0;
1915
eff317d0 1916 if (widget->id != snd_soc_dapm_mux &&
24ff33ac 1917 widget->id != snd_soc_dapm_virt_mux &&
eff317d0 1918 widget->id != snd_soc_dapm_value_mux)
2b97eabc
RP		 1919 return -ENODEV;
1920
2b97eabc 1921 /* find dapm widget path assoc with kcontrol */
8ddab3f5 1922 list_for_each_entry(path, &widget->dapm->card->paths, list) {
2b97eabc
RP		 1923 if (path->kcontrol != kcontrol)
1924 continue;
1925
cb01e2b9 1926 if (!path->name || !e->texts[mux])
2b97eabc
RP		 1927 continue;
1928
1929 found = 1;
1930 /* we now need to match the string in the enum to the path */
db432b41 1931 if (!(strcmp(path->name, e->texts[mux]))) {
2b97eabc 1932 path->connect = 1; /* new connection */
75c1f891 1933 dapm_mark_dirty(path->source, "mux connection");
db432b41
MB		 1934 } else {
1935 if (path->connect)
75c1f891
MB		 1936 dapm_mark_dirty(path->source,
1937 "mux disconnection");
2b97eabc 1938 path->connect = 0; /* old connection must be powered down */
db432b41 1939 }
2b97eabc
RP		 1940 }
1941
db432b41 1942 if (found) {
75c1f891 1943 dapm_mark_dirty(widget, "mux change");
ce6120cc 1944 dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP);
db432b41 1945 }
2b97eabc 1946
618dae11 1947 return found;
2b97eabc 1948}
4edbb345
LG		 1949
1950int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_widget *widget,
1951 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e)
1952{
1953 struct snd_soc_card *card = widget->dapm->card;
1954 int ret;
1955
3cd04343 1956 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4edbb345
LG		 1957 ret = soc_dapm_mux_update_power(widget, kcontrol, mux, e);
1958 mutex_unlock(&card->dapm_mutex);
618dae11
LG		 1959 if (ret > 0)
1960 soc_dpcm_runtime_update(widget);
4edbb345
LG		 1961 return ret;
1962}
40f02cd9 1963EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power);
2b97eabc 1964
1b075e3f 1965/* test and update the power status of a mixer or switch widget */
4edbb345 1966static int soc_dapm_mixer_update_power(struct snd_soc_dapm_widget *widget,
283375ce 1967 struct snd_kcontrol *kcontrol, int connect)
2b97eabc
RP		 1968{
1969 struct snd_soc_dapm_path *path;
1970 int found = 0;
1971
1b075e3f 1972 if (widget->id != snd_soc_dapm_mixer &&
ca9c1aae 1973 widget->id != snd_soc_dapm_mixer_named_ctl &&
1b075e3f 1974 widget->id != snd_soc_dapm_switch)
2b97eabc
RP		 1975 return -ENODEV;
1976
2b97eabc 1977 /* find dapm widget path assoc with kcontrol */
8ddab3f5 1978 list_for_each_entry(path, &widget->dapm->card->paths, list) {
2b97eabc
RP		 1979 if (path->kcontrol != kcontrol)
1980 continue;
1981
1982 /* found, now check type */
1983 found = 1;
283375ce 1984 path->connect = connect;
75c1f891 1985 dapm_mark_dirty(path->source, "mixer connection");
2b97eabc
RP		 1986 }
1987
db432b41 1988 if (found) {
75c1f891 1989 dapm_mark_dirty(widget, "mixer update");
ce6120cc 1990 dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP);
db432b41 1991 }
2b97eabc 1992
618dae11 1993 return found;
2b97eabc 1994}
4edbb345
LG		 1995
1996int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_widget *widget,
1997 struct snd_kcontrol *kcontrol, int connect)
1998{
1999 struct snd_soc_card *card = widget->dapm->card;
2000 int ret;
2001
3cd04343 2002 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4edbb345
LG		 2003 ret = soc_dapm_mixer_update_power(widget, kcontrol, connect);
2004 mutex_unlock(&card->dapm_mutex);
618dae11
LG		 2005 if (ret > 0)
2006 soc_dpcm_runtime_update(widget);
4edbb345
LG		 2007 return ret;
2008}
40f02cd9 2009EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power);
2b97eabc
RP		 2010
2011/* show dapm widget status in sys fs */
2012static ssize_t dapm_widget_show(struct device *dev,
2013 struct device_attribute *attr, char *buf)
2014{
36ae1a96 2015 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
f0fba2ad 2016 struct snd_soc_codec *codec =rtd->codec;
2b97eabc
RP		 2017 struct snd_soc_dapm_widget *w;
2018 int count = 0;
2019 char *state = "not set";
2020
97c866de
JN		 2021 list_for_each_entry(w, &codec->card->widgets, list) {
2022 if (w->dapm != &codec->dapm)
2023 continue;
2b97eabc
RP		 2024
2025 /* only display widgets that burnm power */
2026 switch (w->id) {
2027 case snd_soc_dapm_hp:
2028 case snd_soc_dapm_mic:
2029 case snd_soc_dapm_spk:
2030 case snd_soc_dapm_line:
2031 case snd_soc_dapm_micbias:
2032 case snd_soc_dapm_dac:
2033 case snd_soc_dapm_adc:
2034 case snd_soc_dapm_pga:
d88429a6 2035 case snd_soc_dapm_out_drv:
2b97eabc 2036 case snd_soc_dapm_mixer:
ca9c1aae 2037 case snd_soc_dapm_mixer_named_ctl:
246d0a17 2038 case snd_soc_dapm_supply:
62ea874a 2039 case snd_soc_dapm_regulator_supply:
d7e7eb91 2040 case snd_soc_dapm_clock_supply:
2b97eabc
RP		 2041 if (w->name)
2042 count += sprintf(buf + count, "%s: %s\n",
2043 w->name, w->power ? "On":"Off");
2044 break;
2045 default:
2046 break;
2047 }
2048 }
2049
ce6120cc 2050 switch (codec->dapm.bias_level) {
0be9898a
MB		 2051 case SND_SOC_BIAS_ON:
2052 state = "On";
2b97eabc 2053 break;
0be9898a
MB		 2054 case SND_SOC_BIAS_PREPARE:
2055 state = "Prepare";
2b97eabc 2056 break;
0be9898a
MB		 2057 case SND_SOC_BIAS_STANDBY:
2058 state = "Standby";
2b97eabc 2059 break;
0be9898a
MB		 2060 case SND_SOC_BIAS_OFF:
2061 state = "Off";
2b97eabc
RP		 2062 break;
2063 }
2064 count += sprintf(buf + count, "PM State: %s\n", state);
2065
2066 return count;
2067}
2068
2069static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL);
2070
2071int snd_soc_dapm_sys_add(struct device *dev)
2072{
12ef193d 2073 return device_create_file(dev, &dev_attr_dapm_widget);
2b97eabc
RP		 2074}
2075
2076static void snd_soc_dapm_sys_remove(struct device *dev)
2077{
aef90843 2078 device_remove_file(dev, &dev_attr_dapm_widget);
2b97eabc
RP		 2079}
2080
2081/* free all dapm widgets and resources */
ce6120cc 2082static void dapm_free_widgets(struct snd_soc_dapm_context *dapm)
2b97eabc
RP		 2083{
2084 struct snd_soc_dapm_widget *w, *next_w;
2085 struct snd_soc_dapm_path *p, *next_p;
2086
97c866de
JN		 2087 list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) {
2088 if (w->dapm != dapm)
2089 continue;
2b97eabc 2090 list_del(&w->list);
8ddab3f5
JN		 2091 /*
2092 * remove source and sink paths associated to this widget.
2093 * While removing the path, remove reference to it from both
2094 * source and sink widgets so that path is removed only once.
2095 */
2096 list_for_each_entry_safe(p, next_p, &w->sources, list_sink) {
2097 list_del(&p->list_sink);
2098 list_del(&p->list_source);
2099 list_del(&p->list);
2100 kfree(p->long_name);
2101 kfree(p);
2102 }
2103 list_for_each_entry_safe(p, next_p, &w->sinks, list_source) {
2104 list_del(&p->list_sink);
2105 list_del(&p->list_source);
2106 list_del(&p->list);
2107 kfree(p->long_name);
2108 kfree(p);
2109 }
fad59888 2110 kfree(w->kcontrols);
ead9b919 2111 kfree(w->name);
2b97eabc
RP		 2112 kfree(w);
2113 }
2b97eabc
RP		 2114}
2115
91a5fca4
LPC		 2116static struct snd_soc_dapm_widget *dapm_find_widget(
2117 struct snd_soc_dapm_context *dapm, const char *pin,
2118 bool search_other_contexts)
a5302181
LG		 2119{
2120 struct snd_soc_dapm_widget *w;
91a5fca4 2121 struct snd_soc_dapm_widget *fallback = NULL;
a5302181 2122
97c866de 2123 list_for_each_entry(w, &dapm->card->widgets, list) {
a5302181 2124 if (!strcmp(w->name, pin)) {
91a5fca4
LPC		 2125 if (w->dapm == dapm)
2126 return w;
2127 else
2128 fallback = w;
a5302181
LG		 2129 }
2130 }
2131
91a5fca4
LPC		 2132 if (search_other_contexts)
2133 return fallback;
2134
2135 return NULL;
2136}
2137
2138static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm,
2139 const char *pin, int status)
2140{
2141 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
2142
2143 if (!w) {
30a6a1a4 2144 dev_err(dapm->dev, "ASoC: DAPM unknown pin %s\n", pin);
91a5fca4 2145 return -EINVAL;
0d86733c
MB		 2146 }
2147
1a8b2d9d
MB		 2148 if (w->connected != status)
2149 dapm_mark_dirty(w, "pin configuration");
2150
91a5fca4
LPC		 2151 w->connected = status;
2152 if (status == 0)
2153 w->force = 0;
2154
2155 return 0;
a5302181
LG		 2156}
2157
2b97eabc 2158/**
a5302181 2159 * snd_soc_dapm_sync - scan and power dapm paths
ce6120cc 2160 * @dapm: DAPM context
2b97eabc
RP		 2161 *
2162 * Walks all dapm audio paths and powers widgets according to their
2163 * stream or path usage.
2164 *
2165 * Returns 0 for success.
2166 */
ce6120cc 2167int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm)
2b97eabc 2168{
a73fb2df
LG		 2169 int ret;
2170
4f4c0072
MB		 2171 /*
2172 * Suppress early reports (eg, jacks syncing their state) to avoid
2173 * silly DAPM runs during card startup.
2174 */
2175 if (!dapm->card || !dapm->card->instantiated)
2176 return 0;
2177
3cd04343 2178 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
a73fb2df
LG		 2179 ret = dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP);
2180 mutex_unlock(&dapm->card->dapm_mutex);
2181 return ret;
2b97eabc 2182}
a5302181 2183EXPORT_SYMBOL_GPL(snd_soc_dapm_sync);
2b97eabc 2184
ce6120cc 2185static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm,
215edda3 2186 const struct snd_soc_dapm_route *route)
2b97eabc
RP		 2187{
2188 struct snd_soc_dapm_path *path;
2189 struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w;
97c866de 2190 struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL;
ead9b919 2191 const char *sink;
215edda3 2192 const char *control = route->control;
ead9b919
JN		 2193 const char *source;
2194 char prefixed_sink[80];
2195 char prefixed_source[80];
2b97eabc
RP		 2196 int ret = 0;
2197
88e8b9a8 2198 if (dapm->codec && dapm->codec->name_prefix) {
ead9b919
JN		 2199 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
2200 dapm->codec->name_prefix, route->sink);
2201 sink = prefixed_sink;
2202 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
2203 dapm->codec->name_prefix, route->source);
2204 source = prefixed_source;
2205 } else {
2206 sink = route->sink;
2207 source = route->source;
2208 }
2209
97c866de
JN		 2210 /*
2211 * find src and dest widgets over all widgets but favor a widget from
2212 * current DAPM context
2213 */
2214 list_for_each_entry(w, &dapm->card->widgets, list) {
2b97eabc 2215 if (!wsink && !(strcmp(w->name, sink))) {
97c866de
JN		 2216 wtsink = w;
2217 if (w->dapm == dapm)
2218 wsink = w;
2b97eabc
RP		 2219 continue;
2220 }
2221 if (!wsource && !(strcmp(w->name, source))) {
97c866de
JN		 2222 wtsource = w;
2223 if (w->dapm == dapm)
2224 wsource = w;
2b97eabc
RP		 2225 }
2226 }
97c866de
JN		 2227 /* use widget from another DAPM context if not found from this */
2228 if (!wsink)
2229 wsink = wtsink;
2230 if (!wsource)
2231 wsource = wtsource;
2b97eabc 2232
30a6a1a4
LG		 2233 if (wsource == NULL) {
2234 dev_err(dapm->dev, "ASoC: no source widget found for %s\n",
2235 route->source);
2b97eabc 2236 return -ENODEV;
30a6a1a4
LG		 2237 }
2238 if (wsink == NULL) {
2239 dev_err(dapm->dev, "ASoC: no sink widget found for %s\n",
2240 route->sink);
2241 return -ENODEV;
2242 }
2b97eabc
RP		 2243
2244 path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL);
2245 if (!path)
2246 return -ENOMEM;
2247
2248 path->source = wsource;
2249 path->sink = wsink;
215edda3 2250 path->connected = route->connected;
2b97eabc
RP		 2251 INIT_LIST_HEAD(&path->list);
2252 INIT_LIST_HEAD(&path->list_source);
2253 INIT_LIST_HEAD(&path->list_sink);
2254
2255 /* check for external widgets */
2256 if (wsink->id == snd_soc_dapm_input) {
2257 if (wsource->id == snd_soc_dapm_micbias ||
2258 wsource->id == snd_soc_dapm_mic ||
087d53ab
RC		 2259 wsource->id == snd_soc_dapm_line ||
2260 wsource->id == snd_soc_dapm_output)
2b97eabc
RP		 2261 wsink->ext = 1;
2262 }
2263 if (wsource->id == snd_soc_dapm_output) {
2264 if (wsink->id == snd_soc_dapm_spk ||
2265 wsink->id == snd_soc_dapm_hp ||
1e39221e
SF		 2266 wsink->id == snd_soc_dapm_line ||
2267 wsink->id == snd_soc_dapm_input)
2b97eabc
RP		 2268 wsource->ext = 1;
2269 }
2270
2271 /* connect static paths */
2272 if (control == NULL) {
8ddab3f5 2273 list_add(&path->list, &dapm->card->paths);
2b97eabc
RP		 2274 list_add(&path->list_sink, &wsink->sources);
2275 list_add(&path->list_source, &wsource->sinks);
2276 path->connect = 1;
2277 return 0;
2278 }
2279
2280 /* connect dynamic paths */
dc2bea61 2281 switch (wsink->id) {
2b97eabc
RP		 2282 case snd_soc_dapm_adc:
2283 case snd_soc_dapm_dac:
2284 case snd_soc_dapm_pga:
d88429a6 2285 case snd_soc_dapm_out_drv:
2b97eabc
RP		 2286 case snd_soc_dapm_input:
2287 case snd_soc_dapm_output:
1ab97c8c 2288 case snd_soc_dapm_siggen:
2b97eabc
RP		 2289 case snd_soc_dapm_micbias:
2290 case snd_soc_dapm_vmid:
2291 case snd_soc_dapm_pre:
2292 case snd_soc_dapm_post:
246d0a17 2293 case snd_soc_dapm_supply:
62ea874a 2294 case snd_soc_dapm_regulator_supply:
d7e7eb91 2295 case snd_soc_dapm_clock_supply:
010ff262
MB		 2296 case snd_soc_dapm_aif_in:
2297 case snd_soc_dapm_aif_out:
888df395 2298 case snd_soc_dapm_dai:
c74184ed 2299 case snd_soc_dapm_dai_link:
8ddab3f5 2300 list_add(&path->list, &dapm->card->paths);
2b97eabc
RP		 2301 list_add(&path->list_sink, &wsink->sources);
2302 list_add(&path->list_source, &wsource->sinks);
2303 path->connect = 1;
2304 return 0;
2305 case snd_soc_dapm_mux:
24ff33ac 2306 case snd_soc_dapm_virt_mux:
74155556 2307 case snd_soc_dapm_value_mux:
ce6120cc 2308 ret = dapm_connect_mux(dapm, wsource, wsink, path, control,
82cfecdc 2309 &wsink->kcontrol_news[0]);
2b97eabc
RP		 2310 if (ret != 0)
2311 goto err;
2312 break;
2313 case snd_soc_dapm_switch:
2314 case snd_soc_dapm_mixer:
ca9c1aae 2315 case snd_soc_dapm_mixer_named_ctl:
ce6120cc 2316 ret = dapm_connect_mixer(dapm, wsource, wsink, path, control);
2b97eabc
RP		 2317 if (ret != 0)
2318 goto err;
2319 break;
2320 case snd_soc_dapm_hp:
2321 case snd_soc_dapm_mic:
2322 case snd_soc_dapm_line:
2323 case snd_soc_dapm_spk:
8ddab3f5 2324 list_add(&path->list, &dapm->card->paths);
2b97eabc
RP		 2325 list_add(&path->list_sink, &wsink->sources);
2326 list_add(&path->list_source, &wsource->sinks);
2327 path->connect = 0;
2328 return 0;
2329 }
fabd0384
MB		 2330
2331 dapm_mark_dirty(wsource, "Route added");
2332 dapm_mark_dirty(wsink, "Route added");
2333
2b97eabc
RP		 2334 return 0;
2335
2336err:
30a6a1a4 2337 dev_warn(dapm->dev, "ASoC: no dapm match for %s --> %s --> %s\n",
f7d41ae8 2338 source, control, sink);
2b97eabc
RP		 2339 kfree(path);
2340 return ret;
2341}
105f1c28 2342
efcc3c61
MB		 2343static int snd_soc_dapm_del_route(struct snd_soc_dapm_context *dapm,
2344 const struct snd_soc_dapm_route *route)
2345{
2346 struct snd_soc_dapm_path *path, *p;
2347 const char *sink;
2348 const char *source;
2349 char prefixed_sink[80];
2350 char prefixed_source[80];
2351
2352 if (route->control) {
2353 dev_err(dapm->dev,
30a6a1a4 2354 "ASoC: Removal of routes with controls not supported\n");
efcc3c61
MB		 2355 return -EINVAL;
2356 }
2357
2358 if (dapm->codec && dapm->codec->name_prefix) {
2359 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
2360 dapm->codec->name_prefix, route->sink);
2361 sink = prefixed_sink;
2362 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
2363 dapm->codec->name_prefix, route->source);
2364 source = prefixed_source;
2365 } else {
2366 sink = route->sink;
2367 source = route->source;
2368 }
2369
2370 path = NULL;
2371 list_for_each_entry(p, &dapm->card->paths, list) {
2372 if (strcmp(p->source->name, source) != 0)
2373 continue;
2374 if (strcmp(p->sink->name, sink) != 0)
2375 continue;
2376 path = p;
2377 break;
2378 }
2379
2380 if (path) {
2381 dapm_mark_dirty(path->source, "Route removed");
2382 dapm_mark_dirty(path->sink, "Route removed");
2383
2384 list_del(&path->list);
2385 list_del(&path->list_sink);
2386 list_del(&path->list_source);
2387 kfree(path);
2388 } else {
30a6a1a4 2389 dev_warn(dapm->dev, "ASoC: Route %s->%s does not exist\n",
efcc3c61
MB		 2390 source, sink);
2391 }
2392
2393 return 0;
2394}
2395
105f1c28
MB		 2396/**
2397 * snd_soc_dapm_add_routes - Add routes between DAPM widgets
ce6120cc 2398 * @dapm: DAPM context
105f1c28
MB		 2399 * @route: audio routes
2400 * @num: number of routes
2401 *
2402 * Connects 2 dapm widgets together via a named audio path. The sink is
2403 * the widget receiving the audio signal, whilst the source is the sender
2404 * of the audio signal.
2405 *
2406 * Returns 0 for success else error. On error all resources can be freed
2407 * with a call to snd_soc_card_free().
2408 */
ce6120cc 2409int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm,
105f1c28
MB		 2410 const struct snd_soc_dapm_route *route, int num)
2411{
62d4a4b9 2412 int i, r, ret = 0;
105f1c28 2413
a73fb2df 2414 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
105f1c28 2415 for (i = 0; i < num; i++) {
62d4a4b9
MB		 2416 r = snd_soc_dapm_add_route(dapm, route);
2417 if (r < 0) {
30a6a1a4
LG		 2418 dev_err(dapm->dev, "ASoC: Failed to add route %s -> %s -> %s\n",
2419 route->source,
2420 route->control ? route->control : "direct",
2421 route->sink);
62d4a4b9 2422 ret = r;
105f1c28
MB		 2423 }
2424 route++;
2425 }
a73fb2df 2426 mutex_unlock(&dapm->card->dapm_mutex);
105f1c28 2427
60884c27 2428 return ret;
105f1c28
MB		 2429}
2430EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes);
2431
efcc3c61
MB		 2432/**
2433 * snd_soc_dapm_del_routes - Remove routes between DAPM widgets
2434 * @dapm: DAPM context
2435 * @route: audio routes
2436 * @num: number of routes
2437 *
2438 * Removes routes from the DAPM context.
2439 */
2440int snd_soc_dapm_del_routes(struct snd_soc_dapm_context *dapm,
2441 const struct snd_soc_dapm_route *route, int num)
2442{
2443 int i, ret = 0;
2444
2445 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2446 for (i = 0; i < num; i++) {
2447 snd_soc_dapm_del_route(dapm, route);
2448 route++;
2449 }
2450 mutex_unlock(&dapm->card->dapm_mutex);
2451
2452 return ret;
2453}
2454EXPORT_SYMBOL_GPL(snd_soc_dapm_del_routes);
2455
bf3a9e13
MB		 2456static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context *dapm,
2457 const struct snd_soc_dapm_route *route)
2458{
2459 struct snd_soc_dapm_widget *source = dapm_find_widget(dapm,
2460 route->source,
2461 true);
2462 struct snd_soc_dapm_widget *sink = dapm_find_widget(dapm,
2463 route->sink,
2464 true);
2465 struct snd_soc_dapm_path *path;
2466 int count = 0;
2467
2468 if (!source) {
30a6a1a4 2469 dev_err(dapm->dev, "ASoC: Unable to find source %s for weak route\n",
bf3a9e13
MB		 2470 route->source);
2471 return -ENODEV;
2472 }
2473
2474 if (!sink) {
30a6a1a4 2475 dev_err(dapm->dev, "ASoC: Unable to find sink %s for weak route\n",
bf3a9e13
MB		 2476 route->sink);
2477 return -ENODEV;
2478 }
2479
2480 if (route->control || route->connected)
30a6a1a4 2481 dev_warn(dapm->dev, "ASoC: Ignoring control for weak route %s->%s\n",
bf3a9e13
MB		 2482 route->source, route->sink);
2483
2484 list_for_each_entry(path, &source->sinks, list_source) {
2485 if (path->sink == sink) {
2486 path->weak = 1;
2487 count++;
2488 }
2489 }
2490
2491 if (count == 0)
30a6a1a4 2492 dev_err(dapm->dev, "ASoC: No path found for weak route %s->%s\n",
bf3a9e13
MB		 2493 route->source, route->sink);
2494 if (count > 1)
30a6a1a4 2495 dev_warn(dapm->dev, "ASoC: %d paths found for weak route %s->%s\n",
bf3a9e13
MB		 2496 count, route->source, route->sink);
2497
2498 return 0;
2499}
2500
2501/**
2502 * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak
2503 * @dapm: DAPM context
2504 * @route: audio routes
2505 * @num: number of routes
2506 *
2507 * Mark existing routes matching those specified in the passed array
2508 * as being weak, meaning that they are ignored for the purpose of
2509 * power decisions. The main intended use case is for sidetone paths
2510 * which couple audio between other independent paths if they are both
2511 * active in order to make the combination work better at the user
2512 * level but which aren't intended to be "used".
2513 *
2514 * Note that CODEC drivers should not use this as sidetone type paths
2515 * can frequently also be used as bypass paths.
2516 */
2517int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context *dapm,
2518 const struct snd_soc_dapm_route *route, int num)
2519{
2520 int i, err;
2521 int ret = 0;
2522
a73fb2df 2523 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
bf3a9e13
MB		 2524 for (i = 0; i < num; i++) {
2525 err = snd_soc_dapm_weak_route(dapm, route);
2526 if (err)
2527 ret = err;
2528 route++;
2529 }
a73fb2df 2530 mutex_unlock(&dapm->card->dapm_mutex);
bf3a9e13
MB		 2531
2532 return ret;
2533}
2534EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes);
2535
2b97eabc
RP		 2536/**
2537 * snd_soc_dapm_new_widgets - add new dapm widgets
ce6120cc 2538 * @dapm: DAPM context
2b97eabc
RP		 2539 *
2540 * Checks the codec for any new dapm widgets and creates them if found.
2541 *
2542 * Returns 0 for success.
2543 */
ce6120cc 2544int snd_soc_dapm_new_widgets(struct snd_soc_dapm_context *dapm)
2b97eabc
RP		 2545{
2546 struct snd_soc_dapm_widget *w;
b66a70d5 2547 unsigned int val;
2b97eabc 2548
a73fb2df
LG		 2549 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2550
97c866de 2551 list_for_each_entry(w, &dapm->card->widgets, list)
2b97eabc
RP		 2552 {
2553 if (w->new)
2554 continue;
2555
fad59888
SW		 2556 if (w->num_kcontrols) {
2557 w->kcontrols = kzalloc(w->num_kcontrols *
2558 sizeof(struct snd_kcontrol *),
2559 GFP_KERNEL);
a73fb2df
LG		 2560 if (!w->kcontrols) {
2561 mutex_unlock(&dapm->card->dapm_mutex);
fad59888 2562 return -ENOMEM;
a73fb2df 2563 }
fad59888
SW		 2564 }
2565
2b97eabc
RP		 2566 switch(w->id) {
2567 case snd_soc_dapm_switch:
2568 case snd_soc_dapm_mixer:
ca9c1aae 2569 case snd_soc_dapm_mixer_named_ctl:
4b80b8c2 2570 dapm_new_mixer(w);
2b97eabc
RP		 2571 break;
2572 case snd_soc_dapm_mux:
24ff33ac 2573 case snd_soc_dapm_virt_mux:
2e72f8e3 2574 case snd_soc_dapm_value_mux:
4b80b8c2 2575 dapm_new_mux(w);
2b97eabc 2576 break;
2b97eabc 2577 case snd_soc_dapm_pga:
d88429a6 2578 case snd_soc_dapm_out_drv:
4b80b8c2 2579 dapm_new_pga(w);
2b97eabc 2580 break;
7ca3a18b 2581 default:
2b97eabc
RP		 2582 break;
2583 }
b66a70d5
MB		 2584
2585 /* Read the initial power state from the device */
2586 if (w->reg >= 0) {
0445bdf4 2587 val = soc_widget_read(w, w->reg);
b66a70d5
MB		 2588 val &= 1 << w->shift;
2589 if (w->invert)
2590 val = !val;
2591
2592 if (val)
2593 w->power = 1;
2594 }
2595
2b97eabc 2596 w->new = 1;
d5d1e0be 2597
7508b12a 2598 dapm_mark_dirty(w, "new widget");
d5d1e0be 2599 dapm_debugfs_add_widget(w);
2b97eabc
RP		 2600 }
2601
ce6120cc 2602 dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP);
a73fb2df 2603 mutex_unlock(&dapm->card->dapm_mutex);
2b97eabc
RP		 2604 return 0;
2605}
2606EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets);
2607
2608/**
2609 * snd_soc_dapm_get_volsw - dapm mixer get callback
2610 * @kcontrol: mixer control
ac11a2b3 2611 * @ucontrol: control element information
2b97eabc
RP		 2612 *
2613 * Callback to get the value of a dapm mixer control.
2614 *
2615 * Returns 0 for success.
2616 */
2617int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol,
2618 struct snd_ctl_elem_value *ucontrol)
2619{
fafd2176
SW		 2620 struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
2621 struct snd_soc_dapm_widget *widget = wlist->widgets[0];
4eaa9819
JS		 2622 struct soc_mixer_control *mc =
2623 (struct soc_mixer_control *)kcontrol->private_value;
815ecf8d
JS		 2624 unsigned int reg = mc->reg;
2625 unsigned int shift = mc->shift;
4eaa9819 2626 int max = mc->max;
815ecf8d 2627 unsigned int mask = (1 << fls(max)) - 1;
da602ab8
BT		 2628 unsigned int invert = mc->invert;
2629
2630 if (snd_soc_volsw_is_stereo(mc))
2631 dev_warn(widget->dapm->dev,
30a6a1a4 2632 "ASoC: Control '%s' is stereo, which is not supported\n",
da602ab8 2633 kcontrol->id.name);
2b97eabc 2634
2b97eabc
RP		 2635 ucontrol->value.integer.value[0] =
2636 (snd_soc_read(widget->codec, reg) >> shift) & mask;
da602ab8 2637 if (invert)
2b97eabc 2638 ucontrol->value.integer.value[0] =
a7a4ac86 2639 max - ucontrol->value.integer.value[0];
2b97eabc
RP		 2640
2641 return 0;
2642}
2643EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw);
2644
2645/**
2646 * snd_soc_dapm_put_volsw - dapm mixer set callback
2647 * @kcontrol: mixer control
ac11a2b3 2648 * @ucontrol: control element information
2b97eabc
RP		 2649 *
2650 * Callback to set the value of a dapm mixer control.
2651 *
2652 * Returns 0 for success.
2653 */
2654int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol,
2655 struct snd_ctl_elem_value *ucontrol)
2656{
fafd2176
SW		 2657 struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
2658 struct snd_soc_dapm_widget *widget = wlist->widgets[0];
2659 struct snd_soc_codec *codec = widget->codec;
a73fb2df 2660 struct snd_soc_card *card = codec->card;
4eaa9819
JS		 2661 struct soc_mixer_control *mc =
2662 (struct soc_mixer_control *)kcontrol->private_value;
815ecf8d
JS		 2663 unsigned int reg = mc->reg;
2664 unsigned int shift = mc->shift;
4eaa9819 2665 int max = mc->max;
815ecf8d
JS		 2666 unsigned int mask = (1 << fls(max)) - 1;
2667 unsigned int invert = mc->invert;
e9cf7049 2668 unsigned int val;
97404f2e
MB		 2669 int connect, change;
2670 struct snd_soc_dapm_update update;
fafd2176 2671 int wi;
2b97eabc 2672
da602ab8
BT		 2673 if (snd_soc_volsw_is_stereo(mc))
2674 dev_warn(widget->dapm->dev,
30a6a1a4 2675 "ASoC: Control '%s' is stereo, which is not supported\n",
da602ab8
BT		 2676 kcontrol->id.name);
2677
2b97eabc 2678 val = (ucontrol->value.integer.value[0] & mask);
8a720718 2679 connect = !!val;
2b97eabc
RP		 2680
2681 if (invert)
a7a4ac86 2682 val = max - val;
e9cf7049 2683 mask = mask << shift;
2b97eabc 2684 val = val << shift;
2b97eabc 2685
3cd04343 2686 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2b97eabc 2687
e9cf7049 2688 change = snd_soc_test_bits(widget->codec, reg, mask, val);
97404f2e 2689 if (change) {
fafd2176
SW		 2690 for (wi = 0; wi < wlist->num_widgets; wi++) {
2691 widget = wlist->widgets[wi];
283375ce 2692
fafd2176 2693 widget->value = val;
97404f2e 2694
fafd2176
SW		 2695 update.kcontrol = kcontrol;
2696 update.widget = widget;
2697 update.reg = reg;
2698 update.mask = mask;
2699 update.val = val;
2700 widget->dapm->update = &update;
97404f2e 2701
4edbb345 2702 soc_dapm_mixer_update_power(widget, kcontrol, connect);
fafd2176
SW		 2703
2704 widget->dapm->update = NULL;
2705 }
283375ce
MB		 2706 }
2707
a73fb2df 2708 mutex_unlock(&card->dapm_mutex);
97404f2e 2709 return 0;
2b97eabc
RP		 2710}
2711EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw);
2712
2713/**
2714 * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback
2715 * @kcontrol: mixer control
ac11a2b3 2716 * @ucontrol: control element information
2b97eabc
RP		 2717 *
2718 * Callback to get the value of a dapm enumerated double mixer control.
2719 *
2720 * Returns 0 for success.
2721 */
2722int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol,
2723 struct snd_ctl_elem_value *ucontrol)
2724{
fafd2176
SW		 2725 struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
2726 struct snd_soc_dapm_widget *widget = wlist->widgets[0];
2b97eabc 2727 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
86767b7d 2728 unsigned int val;
2b97eabc 2729
2b97eabc 2730 val = snd_soc_read(widget->codec, e->reg);
86767b7d 2731 ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & e->mask;
2b97eabc
RP		 2732 if (e->shift_l != e->shift_r)
2733 ucontrol->value.enumerated.item[1] =
86767b7d 2734 (val >> e->shift_r) & e->mask;
2b97eabc
RP		 2735
2736 return 0;
2737}
2738EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double);
2739
2740/**
2741 * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback
2742 * @kcontrol: mixer control
ac11a2b3 2743 * @ucontrol: control element information
2b97eabc
RP		 2744 *
2745 * Callback to set the value of a dapm enumerated double mixer control.
2746 *
2747 * Returns 0 for success.
2748 */
2749int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol,
2750 struct snd_ctl_elem_value *ucontrol)
2751{
fafd2176
SW		 2752 struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
2753 struct snd_soc_dapm_widget *widget = wlist->widgets[0];
2754 struct snd_soc_codec *codec = widget->codec;
a73fb2df 2755 struct snd_soc_card *card = codec->card;
2b97eabc 2756 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
3a65577d 2757 unsigned int val, mux, change;
86767b7d 2758 unsigned int mask;
97404f2e 2759 struct snd_soc_dapm_update update;
fafd2176 2760 int wi;
2b97eabc 2761
f8ba0b7b 2762 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2b97eabc
RP		 2763 return -EINVAL;
2764 mux = ucontrol->value.enumerated.item[0];
2765 val = mux << e->shift_l;
86767b7d 2766 mask = e->mask << e->shift_l;
2b97eabc 2767 if (e->shift_l != e->shift_r) {
f8ba0b7b 2768 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2b97eabc
RP		 2769 return -EINVAL;
2770 val |= ucontrol->value.enumerated.item[1] << e->shift_r;
86767b7d 2771 mask |= e->mask << e->shift_r;
2b97eabc
RP		 2772 }
2773
3cd04343 2774 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
fafd2176 2775
3a65577d 2776 change = snd_soc_test_bits(widget->codec, e->reg, mask, val);
fafd2176
SW		 2777 if (change) {
2778 for (wi = 0; wi < wlist->num_widgets; wi++) {
2779 widget = wlist->widgets[wi];
2780
2781 widget->value = val;
1642e3d4 2782
fafd2176
SW		 2783 update.kcontrol = kcontrol;
2784 update.widget = widget;
2785 update.reg = e->reg;
2786 update.mask = mask;
2787 update.val = val;
2788 widget->dapm->update = &update;
1642e3d4 2789
4edbb345 2790 soc_dapm_mux_update_power(widget, kcontrol, mux, e);
1642e3d4 2791
fafd2176
SW		 2792 widget->dapm->update = NULL;
2793 }
2794 }
2b97eabc 2795
a73fb2df 2796 mutex_unlock(&card->dapm_mutex);
97404f2e 2797 return change;
2b97eabc
RP		 2798}
2799EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double);
2800
d2b247a8
MB		 2801/**
2802 * snd_soc_dapm_get_enum_virt - Get virtual DAPM mux
2803 * @kcontrol: mixer control
2804 * @ucontrol: control element information
2805 *
2806 * Returns 0 for success.
2807 */
2808int snd_soc_dapm_get_enum_virt(struct snd_kcontrol *kcontrol,
2809 struct snd_ctl_elem_value *ucontrol)
2810{
fafd2176
SW		 2811 struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
2812 struct snd_soc_dapm_widget *widget = wlist->widgets[0];
d2b247a8
MB		 2813
2814 ucontrol->value.enumerated.item[0] = widget->value;
2815
2816 return 0;
2817}
2818EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_virt);
2819
2820/**
2821 * snd_soc_dapm_put_enum_virt - Set virtual DAPM mux
2822 * @kcontrol: mixer control
2823 * @ucontrol: control element information
2824 *
2825 * Returns 0 for success.
2826 */
2827int snd_soc_dapm_put_enum_virt(struct snd_kcontrol *kcontrol,
2828 struct snd_ctl_elem_value *ucontrol)
2829{
fafd2176
SW		 2830 struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
2831 struct snd_soc_dapm_widget *widget = wlist->widgets[0];
2832 struct snd_soc_codec *codec = widget->codec;
a73fb2df 2833 struct snd_soc_card *card = codec->card;
d2b247a8
MB		 2834 struct soc_enum *e =
2835 (struct soc_enum *)kcontrol->private_value;
2836 int change;
2837 int ret = 0;
fafd2176 2838 int wi;
d2b247a8
MB		 2839
2840 if (ucontrol->value.enumerated.item[0] >= e->max)
2841 return -EINVAL;
2842
3cd04343 2843 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
d2b247a8
MB		 2844
2845 change = widget->value != ucontrol->value.enumerated.item[0];
fafd2176
SW		 2846 if (change) {
2847 for (wi = 0; wi < wlist->num_widgets; wi++) {
2848 widget = wlist->widgets[wi];
2849
2850 widget->value = ucontrol->value.enumerated.item[0];
2851
4edbb345 2852 soc_dapm_mux_update_power(widget, kcontrol, widget->value, e);
fafd2176
SW		 2853 }
2854 }
d2b247a8 2855
a73fb2df 2856 mutex_unlock(&card->dapm_mutex);
d2b247a8
MB		 2857 return ret;
2858}
2859EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt);
2860
2e72f8e3
PU		 2861/**
2862 * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get
2863 * callback
2864 * @kcontrol: mixer control
2865 * @ucontrol: control element information
2866 *
2867 * Callback to get the value of a dapm semi enumerated double mixer control.
2868 *
2869 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2870 * used for handling bitfield coded enumeration for example.
2871 *
2872 * Returns 0 for success.
2873 */
2874int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol *kcontrol,
2875 struct snd_ctl_elem_value *ucontrol)
2876{
fafd2176
SW		 2877 struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
2878 struct snd_soc_dapm_widget *widget = wlist->widgets[0];
74155556 2879 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
46f5822f 2880 unsigned int reg_val, val, mux;
2e72f8e3
PU		 2881
2882 reg_val = snd_soc_read(widget->codec, e->reg);
2883 val = (reg_val >> e->shift_l) & e->mask;
2884 for (mux = 0; mux < e->max; mux++) {
2885 if (val == e->values[mux])
2886 break;
2887 }
2888 ucontrol->value.enumerated.item[0] = mux;
2889 if (e->shift_l != e->shift_r) {
2890 val = (reg_val >> e->shift_r) & e->mask;
2891 for (mux = 0; mux < e->max; mux++) {
2892 if (val == e->values[mux])
2893 break;
2894 }
2895 ucontrol->value.enumerated.item[1] = mux;
2896 }
2897
2898 return 0;
2899}
2900EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double);
2901
2902/**
2903 * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set
2904 * callback
2905 * @kcontrol: mixer control
2906 * @ucontrol: control element information
2907 *
2908 * Callback to set the value of a dapm semi enumerated double mixer control.
2909 *
2910 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2911 * used for handling bitfield coded enumeration for example.
2912 *
2913 * Returns 0 for success.
2914 */
2915int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol,
2916 struct snd_ctl_elem_value *ucontrol)
2917{
fafd2176
SW		 2918 struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
2919 struct snd_soc_dapm_widget *widget = wlist->widgets[0];
2920 struct snd_soc_codec *codec = widget->codec;
a73fb2df 2921 struct snd_soc_card *card = codec->card;
74155556 2922 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
3a65577d 2923 unsigned int val, mux, change;
46f5822f 2924 unsigned int mask;
97404f2e 2925 struct snd_soc_dapm_update update;
fafd2176 2926 int wi;
2e72f8e3
PU		 2927
2928 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2929 return -EINVAL;
2930 mux = ucontrol->value.enumerated.item[0];
2931 val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l;
2932 mask = e->mask << e->shift_l;
2933 if (e->shift_l != e->shift_r) {
2934 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2935 return -EINVAL;
2936 val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r;
2937 mask |= e->mask << e->shift_r;
2938 }
2939
3cd04343 2940 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
fafd2176 2941
3a65577d 2942 change = snd_soc_test_bits(widget->codec, e->reg, mask, val);
fafd2176
SW		 2943 if (change) {
2944 for (wi = 0; wi < wlist->num_widgets; wi++) {
2945 widget = wlist->widgets[wi];
1642e3d4 2946
fafd2176 2947 widget->value = val;
1642e3d4 2948
fafd2176
SW		 2949 update.kcontrol = kcontrol;
2950 update.widget = widget;
2951 update.reg = e->reg;
2952 update.mask = mask;
2953 update.val = val;
2954 widget->dapm->update = &update;
1642e3d4 2955
4edbb345 2956 soc_dapm_mux_update_power(widget, kcontrol, mux, e);
fafd2176
SW		 2957
2958 widget->dapm->update = NULL;
2959 }
2960 }
2e72f8e3 2961
a73fb2df 2962 mutex_unlock(&card->dapm_mutex);
97404f2e 2963 return change;
2e72f8e3
PU		 2964}
2965EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double);
2966
8b37dbd2
MB		 2967/**
2968 * snd_soc_dapm_info_pin_switch - Info for a pin switch
2969 *
2970 * @kcontrol: mixer control
2971 * @uinfo: control element information
2972 *
2973 * Callback to provide information about a pin switch control.
2974 */
2975int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol,
2976 struct snd_ctl_elem_info *uinfo)
2977{
2978 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2979 uinfo->count = 1;
2980 uinfo->value.integer.min = 0;
2981 uinfo->value.integer.max = 1;
2982
2983 return 0;
2984}
2985EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch);
2986
2987/**
2988 * snd_soc_dapm_get_pin_switch - Get information for a pin switch
2989 *
2990 * @kcontrol: mixer control
2991 * @ucontrol: Value
2992 */
2993int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol,
2994 struct snd_ctl_elem_value *ucontrol)
2995{
48a8c394 2996 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
8b37dbd2
MB		 2997 const char *pin = (const char *)kcontrol->private_value;
2998
3cd04343 2999 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
8b37dbd2
MB		 3000
3001 ucontrol->value.integer.value[0] =
48a8c394 3002 snd_soc_dapm_get_pin_status(&card->dapm, pin);
8b37dbd2 3003
a73fb2df 3004 mutex_unlock(&card->dapm_mutex);
8b37dbd2
MB		 3005
3006 return 0;
3007}
3008EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch);
3009
3010/**
3011 * snd_soc_dapm_put_pin_switch - Set information for a pin switch
3012 *
3013 * @kcontrol: mixer control
3014 * @ucontrol: Value
3015 */
3016int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol,
3017 struct snd_ctl_elem_value *ucontrol)
3018{
48a8c394 3019 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
8b37dbd2
MB		 3020 const char *pin = (const char *)kcontrol->private_value;
3021
3cd04343 3022 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
8b37dbd2
MB		 3023
3024 if (ucontrol->value.integer.value[0])
48a8c394 3025 snd_soc_dapm_enable_pin(&card->dapm, pin);
8b37dbd2 3026 else
48a8c394 3027 snd_soc_dapm_disable_pin(&card->dapm, pin);
8b37dbd2 3028
a73fb2df 3029 mutex_unlock(&card->dapm_mutex);
8b37dbd2 3030
a73fb2df 3031 snd_soc_dapm_sync(&card->dapm);
8b37dbd2
MB		 3032 return 0;
3033}
3034EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch);
3035
5ba06fc9
MB		 3036static struct snd_soc_dapm_widget *
3037snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
3038 const struct snd_soc_dapm_widget *widget)
2b97eabc
RP		 3039{
3040 struct snd_soc_dapm_widget *w;
ead9b919 3041 size_t name_len;
62ea874a 3042 int ret;
2b97eabc
RP		 3043
3044 if ((w = dapm_cnew_widget(widget)) == NULL)
5ba06fc9 3045 return NULL;
2b97eabc 3046
62ea874a
MB		 3047 switch (w->id) {
3048 case snd_soc_dapm_regulator_supply:
a3cc056b
LG		 3049 w->regulator = devm_regulator_get(dapm->dev, w->name);
3050 if (IS_ERR(w->regulator)) {
3051 ret = PTR_ERR(w->regulator);
30a6a1a4 3052 dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
62ea874a 3053 w->name, ret);
5ba06fc9 3054 return NULL;
62ea874a 3055 }
8784c77a
MB		 3056
3057 if (w->invert & SND_SOC_DAPM_REGULATOR_BYPASS) {
3058 ret = regulator_allow_bypass(w->regulator, true);
3059 if (ret != 0)
3060 dev_warn(w->dapm->dev,
3061 "ASoC: Failed to unbypass %s: %d\n",
3062 w->name, ret);
3063 }
62ea874a 3064 break;
d7e7eb91 3065 case snd_soc_dapm_clock_supply:
165961ef 3066#ifdef CONFIG_CLKDEV_LOOKUP
695594f1 3067 w->clk = devm_clk_get(dapm->dev, w->name);
d7e7eb91
OL		 3068 if (IS_ERR(w->clk)) {
3069 ret = PTR_ERR(w->clk);
30a6a1a4 3070 dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
d7e7eb91
OL		 3071 w->name, ret);
3072 return NULL;
3073 }
ec02995a
MB		 3074#else
3075 return NULL;
3076#endif
d7e7eb91 3077 break;
62ea874a
MB		 3078 default:
3079 break;
3080 }
2b97eabc 3081
ead9b919 3082 name_len = strlen(widget->name) + 1;
88e8b9a8 3083 if (dapm->codec && dapm->codec->name_prefix)
ead9b919
JN		 3084 name_len += 1 + strlen(dapm->codec->name_prefix);
3085 w->name = kmalloc(name_len, GFP_KERNEL);
3086 if (w->name == NULL) {
3087 kfree(w);
5ba06fc9 3088 return NULL;
ead9b919 3089 }
88e8b9a8 3090 if (dapm->codec && dapm->codec->name_prefix)
888df395 3091 snprintf((char *)w->name, name_len, "%s %s",
ead9b919
JN		 3092 dapm->codec->name_prefix, widget->name);
3093 else
888df395 3094 snprintf((char *)w->name, name_len, "%s", widget->name);
ead9b919 3095
7ca3a18b
MB		 3096 switch (w->id) {
3097 case snd_soc_dapm_switch:
3098 case snd_soc_dapm_mixer:
3099 case snd_soc_dapm_mixer_named_ctl:
3100 w->power_check = dapm_generic_check_power;
3101 break;
3102 case snd_soc_dapm_mux:
3103 case snd_soc_dapm_virt_mux:
3104 case snd_soc_dapm_value_mux:
3105 w->power_check = dapm_generic_check_power;
3106 break;
3107 case snd_soc_dapm_adc:
3108 case snd_soc_dapm_aif_out:
3109 w->power_check = dapm_adc_check_power;
3110 break;
3111 case snd_soc_dapm_dac:
3112 case snd_soc_dapm_aif_in:
3113 w->power_check = dapm_dac_check_power;
3114 break;
3115 case snd_soc_dapm_pga:
3116 case snd_soc_dapm_out_drv:
3117 case snd_soc_dapm_input:
3118 case snd_soc_dapm_output:
3119 case snd_soc_dapm_micbias:
3120 case snd_soc_dapm_spk:
3121 case snd_soc_dapm_hp:
3122 case snd_soc_dapm_mic:
3123 case snd_soc_dapm_line:
c74184ed 3124 case snd_soc_dapm_dai_link:
7ca3a18b
MB		 3125 w->power_check = dapm_generic_check_power;
3126 break;
3127 case snd_soc_dapm_supply:
62ea874a 3128 case snd_soc_dapm_regulator_supply:
d7e7eb91 3129 case snd_soc_dapm_clock_supply:
7ca3a18b
MB		 3130 w->power_check = dapm_supply_check_power;
3131 break;
888df395
MB		 3132 case snd_soc_dapm_dai:
3133 w->power_check = dapm_dai_check_power;
3134 break;
7ca3a18b
MB		 3135 default:
3136 w->power_check = dapm_always_on_check_power;
3137 break;
3138 }
3139
97c866de 3140 dapm->n_widgets++;
ce6120cc
LG		 3141 w->dapm = dapm;
3142 w->codec = dapm->codec;
b7950641 3143 w->platform = dapm->platform;
2b97eabc
RP		 3144 INIT_LIST_HEAD(&w->sources);
3145 INIT_LIST_HEAD(&w->sinks);
3146 INIT_LIST_HEAD(&w->list);
db432b41 3147 INIT_LIST_HEAD(&w->dirty);
97c866de 3148 list_add(&w->list, &dapm->card->widgets);
2b97eabc
RP		 3149
3150 /* machine layer set ups unconnected pins and insertions */
3151 w->connected = 1;
5ba06fc9 3152 return w;
2b97eabc 3153}
2b97eabc 3154
4ba1327a
MB		 3155/**
3156 * snd_soc_dapm_new_controls - create new dapm controls
ce6120cc 3157 * @dapm: DAPM context
4ba1327a
MB		 3158 * @widget: widget array
3159 * @num: number of widgets
3160 *
3161 * Creates new DAPM controls based upon the templates.
3162 *
3163 * Returns 0 for success else error.
3164 */
ce6120cc 3165int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm,
4ba1327a
MB		 3166 const struct snd_soc_dapm_widget *widget,
3167 int num)
3168{
5ba06fc9
MB		 3169 struct snd_soc_dapm_widget *w;
3170 int i;
60884c27 3171 int ret = 0;
4ba1327a 3172
a73fb2df 3173 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
4ba1327a 3174 for (i = 0; i < num; i++) {
5ba06fc9
MB		 3175 w = snd_soc_dapm_new_control(dapm, widget);
3176 if (!w) {
f7d41ae8 3177 dev_err(dapm->dev,
5ba06fc9
MB		 3178 "ASoC: Failed to create DAPM control %s\n",
3179 widget->name);
60884c27
DC		 3180 ret = -ENOMEM;
3181 break;
b8b33cb5 3182 }
4ba1327a
MB		 3183 widget++;
3184 }
a73fb2df 3185 mutex_unlock(&dapm->card->dapm_mutex);
60884c27 3186 return ret;
4ba1327a
MB		 3187}
3188EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls);
3189
c74184ed
MB		 3190static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w,
3191 struct snd_kcontrol *kcontrol, int event)
3192{
3193 struct snd_soc_dapm_path *source_p, *sink_p;
3194 struct snd_soc_dai *source, *sink;
3195 const struct snd_soc_pcm_stream *config = w->params;
3196 struct snd_pcm_substream substream;
9747cec2 3197 struct snd_pcm_hw_params *params = NULL;
c74184ed
MB		 3198 u64 fmt;
3199 int ret;
3200
3201 BUG_ON(!config);
3202 BUG_ON(list_empty(&w->sources) || list_empty(&w->sinks));
3203
3204 /* We only support a single source and sink, pick the first */
3205 source_p = list_first_entry(&w->sources, struct snd_soc_dapm_path,
3206 list_sink);
3207 sink_p = list_first_entry(&w->sinks, struct snd_soc_dapm_path,
3208 list_source);
3209
3210 BUG_ON(!source_p || !sink_p);
3211 BUG_ON(!sink_p->source || !source_p->sink);
3212 BUG_ON(!source_p->source || !sink_p->sink);
3213
3214 source = source_p->source->priv;
3215 sink = sink_p->sink->priv;
3216
3217 /* Be a little careful as we don't want to overflow the mask array */
3218 if (config->formats) {
3219 fmt = ffs(config->formats) - 1;
3220 } else {
30a6a1a4 3221 dev_warn(w->dapm->dev, "ASoC: Invalid format %llx specified\n",
c74184ed
MB		 3222 config->formats);
3223 fmt = 0;
3224 }
3225
3226 /* Currently very limited parameter selection */
9747cec2
MB		 3227 params = kzalloc(sizeof(*params), GFP_KERNEL);
3228 if (!params) {
3229 ret = -ENOMEM;
3230 goto out;
3231 }
3232 snd_mask_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), fmt);
c74184ed 3233
9747cec2 3234 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->min =
c74184ed 3235 config->rate_min;
9747cec2 3236 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->max =
c74184ed
MB		 3237 config->rate_max;
3238
9747cec2 3239 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->min
c74184ed 3240 = config->channels_min;
9747cec2 3241 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max
c74184ed
MB		 3242 = config->channels_max;
3243
3244 memset(&substream, 0, sizeof(substream));
3245
3246 switch (event) {
3247 case SND_SOC_DAPM_PRE_PMU:
3248 if (source->driver->ops && source->driver->ops->hw_params) {
3249 substream.stream = SNDRV_PCM_STREAM_CAPTURE;
3250 ret = source->driver->ops->hw_params(&substream,
9747cec2 3251 params, source);
c74184ed
MB		 3252 if (ret != 0) {
3253 dev_err(source->dev,
30a6a1a4 3254 "ASoC: hw_params() failed: %d\n", ret);
9747cec2 3255 goto out;
c74184ed
MB		 3256 }
3257 }
3258
3259 if (sink->driver->ops && sink->driver->ops->hw_params) {
3260 substream.stream = SNDRV_PCM_STREAM_PLAYBACK;
9747cec2 3261 ret = sink->driver->ops->hw_params(&substream, params,
c74184ed
MB		 3262 sink);
3263 if (ret != 0) {
3264 dev_err(sink->dev,
30a6a1a4 3265 "ASoC: hw_params() failed: %d\n", ret);
9747cec2 3266 goto out;
c74184ed
MB		 3267 }
3268 }
3269 break;
3270
3271 case SND_SOC_DAPM_POST_PMU:
da18396f
MB		 3272 ret = snd_soc_dai_digital_mute(sink, 0,
3273 SNDRV_PCM_STREAM_PLAYBACK);
c74184ed 3274 if (ret != 0 && ret != -ENOTSUPP)
30a6a1a4 3275 dev_warn(sink->dev, "ASoC: Failed to unmute: %d\n", ret);
9747cec2 3276 ret = 0;
c74184ed
MB		 3277 break;
3278
3279 case SND_SOC_DAPM_PRE_PMD:
da18396f
MB		 3280 ret = snd_soc_dai_digital_mute(sink, 1,
3281 SNDRV_PCM_STREAM_PLAYBACK);
c74184ed 3282 if (ret != 0 && ret != -ENOTSUPP)
30a6a1a4 3283 dev_warn(sink->dev, "ASoC: Failed to mute: %d\n", ret);
9747cec2 3284 ret = 0;
c74184ed
MB		 3285 break;
3286
3287 default:
3288 BUG();
3289 return -EINVAL;
3290 }
3291
9747cec2
MB		 3292out:
3293 kfree(params);
3294 return ret;
c74184ed
MB		 3295}
3296
3297int snd_soc_dapm_new_pcm(struct snd_soc_card *card,
3298 const struct snd_soc_pcm_stream *params,
3299 struct snd_soc_dapm_widget *source,
3300 struct snd_soc_dapm_widget *sink)
3301{
3302 struct snd_soc_dapm_route routes[2];
3303 struct snd_soc_dapm_widget template;
3304 struct snd_soc_dapm_widget *w;
3305 size_t len;
3306 char *link_name;
3307
3308 len = strlen(source->name) + strlen(sink->name) + 2;
3309 link_name = devm_kzalloc(card->dev, len, GFP_KERNEL);
3310 if (!link_name)
3311 return -ENOMEM;
3312 snprintf(link_name, len, "%s-%s", source->name, sink->name);
3313
3314 memset(&template, 0, sizeof(template));
3315 template.reg = SND_SOC_NOPM;
3316 template.id = snd_soc_dapm_dai_link;
3317 template.name = link_name;
3318 template.event = snd_soc_dai_link_event;
3319 template.event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
3320 SND_SOC_DAPM_PRE_PMD;
3321
30a6a1a4 3322 dev_dbg(card->dev, "ASoC: adding %s widget\n", link_name);
c74184ed
MB		 3323
3324 w = snd_soc_dapm_new_control(&card->dapm, &template);
3325 if (!w) {
30a6a1a4 3326 dev_err(card->dev, "ASoC: Failed to create %s widget\n",
c74184ed
MB		 3327 link_name);
3328 return -ENOMEM;
3329 }
3330
3331 w->params = params;
3332
3333 memset(&routes, 0, sizeof(routes));
3334
3335 routes[0].source = source->name;
3336 routes[0].sink = link_name;
3337 routes[1].source = link_name;
3338 routes[1].sink = sink->name;
3339
3340 return snd_soc_dapm_add_routes(&card->dapm, routes,
3341 ARRAY_SIZE(routes));
3342}
3343
888df395
MB		 3344int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context *dapm,
3345 struct snd_soc_dai *dai)
2b97eabc 3346{
888df395 3347 struct snd_soc_dapm_widget template;
2b97eabc
RP		 3348 struct snd_soc_dapm_widget *w;
3349
888df395
MB		 3350 WARN_ON(dapm->dev != dai->dev);
3351
3352 memset(&template, 0, sizeof(template));
3353 template.reg = SND_SOC_NOPM;
3354
3355 if (dai->driver->playback.stream_name) {
3356 template.id = snd_soc_dapm_dai;
3357 template.name = dai->driver->playback.stream_name;
3358 template.sname = dai->driver->playback.stream_name;
3359
30a6a1a4 3360 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
888df395
MB		 3361 template.name);
3362
3363 w = snd_soc_dapm_new_control(dapm, &template);
3364 if (!w) {
30a6a1a4 3365 dev_err(dapm->dev, "ASoC: Failed to create %s widget\n",
888df395
MB		 3366 dai->driver->playback.stream_name);
3367 }
3368
3369 w->priv = dai;
3370 dai->playback_widget = w;
3371 }
3372
3373 if (dai->driver->capture.stream_name) {
3374 template.id = snd_soc_dapm_dai;
3375 template.name = dai->driver->capture.stream_name;
3376 template.sname = dai->driver->capture.stream_name;
3377
30a6a1a4 3378 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
888df395
MB		 3379 template.name);
3380
3381 w = snd_soc_dapm_new_control(dapm, &template);
3382 if (!w) {
30a6a1a4 3383 dev_err(dapm->dev, "ASoC: Failed to create %s widget\n",
888df395
MB		 3384 dai->driver->capture.stream_name);
3385 }
3386
3387 w->priv = dai;
3388 dai->capture_widget = w;
3389 }
3390
3391 return 0;
3392}
3393
3394int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card)
3395{
3396 struct snd_soc_dapm_widget *dai_w, *w;
3397 struct snd_soc_dai *dai;
3398 struct snd_soc_dapm_route r;
3399
3400 memset(&r, 0, sizeof(r));
3401
3402 /* For each DAI widget... */
3403 list_for_each_entry(dai_w, &card->widgets, list) {
3404 if (dai_w->id != snd_soc_dapm_dai)
2b97eabc 3405 continue;
888df395
MB		 3406
3407 dai = dai_w->priv;
3408
3409 /* ...find all widgets with the same stream and link them */
3410 list_for_each_entry(w, &card->widgets, list) {
3411 if (w->dapm != dai_w->dapm)
3412 continue;
3413
3414 if (w->id == snd_soc_dapm_dai)
3415 continue;
3416
3417 if (!w->sname)
3418 continue;
3419
3420 if (dai->driver->playback.stream_name &&
3421 strstr(w->sname,
3422 dai->driver->playback.stream_name)) {
3423 r.source = dai->playback_widget->name;
3424 r.sink = w->name;
3425 dev_dbg(dai->dev, "%s -> %s\n",
3426 r.source, r.sink);
3427
3428 snd_soc_dapm_add_route(w->dapm, &r);
3429 }
3430
3431 if (dai->driver->capture.stream_name &&
3432 strstr(w->sname,
3433 dai->driver->capture.stream_name)) {
3434 r.source = w->name;
3435 r.sink = dai->capture_widget->name;
3436 dev_dbg(dai->dev, "%s -> %s\n",
3437 r.source, r.sink);
3438
3439 snd_soc_dapm_add_route(w->dapm, &r);
2b97eabc
RP		 3440 }
3441 }
3442 }
2b97eabc 3443
888df395
MB		 3444 return 0;
3445}
64a648c2 3446
d9b0951b
LG		 3447static void soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
3448 int event)
2b97eabc 3449{
7bd3a6f3 3450
d9b0951b
LG		 3451 struct snd_soc_dapm_widget *w_cpu, *w_codec;
3452 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
3453 struct snd_soc_dai *codec_dai = rtd->codec_dai;
7bd3a6f3 3454
d9b0951b
LG		 3455 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
3456 w_cpu = cpu_dai->playback_widget;
3457 w_codec = codec_dai->playback_widget;
3458 } else {
3459 w_cpu = cpu_dai->capture_widget;
3460 w_codec = codec_dai->capture_widget;
3461 }
2b97eabc 3462
d9b0951b 3463 if (w_cpu) {
fe360685 3464
d9b0951b
LG		 3465 dapm_mark_dirty(w_cpu, "stream event");
3466
3467 switch (event) {
3468 case SND_SOC_DAPM_STREAM_START:
3469 w_cpu->active = 1;
3470 break;
3471 case SND_SOC_DAPM_STREAM_STOP:
3472 w_cpu->active = 0;
3473 break;
3474 case SND_SOC_DAPM_STREAM_SUSPEND:
3475 case SND_SOC_DAPM_STREAM_RESUME:
3476 case SND_SOC_DAPM_STREAM_PAUSE_PUSH:
3477 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE:
3478 break;
3479 }
3480 }
3481
3482 if (w_codec) {
3483
3484 dapm_mark_dirty(w_codec, "stream event");
3485
3486 switch (event) {
3487 case SND_SOC_DAPM_STREAM_START:
3488 w_codec->active = 1;
3489 break;
3490 case SND_SOC_DAPM_STREAM_STOP:
3491 w_codec->active = 0;
3492 break;
3493 case SND_SOC_DAPM_STREAM_SUSPEND:
3494 case SND_SOC_DAPM_STREAM_RESUME:
3495 case SND_SOC_DAPM_STREAM_PAUSE_PUSH:
3496 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE:
3497 break;
3498 }
2b97eabc 3499 }
2b97eabc 3500
d9b0951b 3501 dapm_power_widgets(&rtd->card->dapm, event);
ce6120cc
LG		 3502}
3503
3504/**
3505 * snd_soc_dapm_stream_event - send a stream event to the dapm core
3506 * @rtd: PCM runtime data
3507 * @stream: stream name
3508 * @event: stream event
3509 *
3510 * Sends a stream event to the dapm core. The core then makes any
3511 * necessary widget power changes.
3512 *
3513 * Returns 0 for success else error.
3514 */
d9b0951b
LG		 3515void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
3516 int event)
ce6120cc 3517{
a73fb2df 3518 struct snd_soc_card *card = rtd->card;
ce6120cc 3519
3cd04343 3520 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
d9b0951b 3521 soc_dapm_stream_event(rtd, stream, event);
a73fb2df 3522 mutex_unlock(&card->dapm_mutex);
2b97eabc 3523}
2b97eabc
RP		 3524
3525/**
a5302181 3526 * snd_soc_dapm_enable_pin - enable pin.
ce6120cc 3527 * @dapm: DAPM context
a5302181 3528 * @pin: pin name
2b97eabc 3529 *
74b8f955 3530 * Enables input/output pin and its parents or children widgets iff there is
a5302181
LG		 3531 * a valid audio route and active audio stream.
3532 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3533 * do any widget power switching.
2b97eabc 3534 */
ce6120cc 3535int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin)
2b97eabc 3536{
ce6120cc 3537 return snd_soc_dapm_set_pin(dapm, pin, 1);
a5302181
LG		 3538}
3539EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin);
2b97eabc 3540
da34183e
MB		 3541/**
3542 * snd_soc_dapm_force_enable_pin - force a pin to be enabled
ce6120cc 3543 * @dapm: DAPM context
da34183e
MB		 3544 * @pin: pin name
3545 *
3546 * Enables input/output pin regardless of any other state. This is
3547 * intended for use with microphone bias supplies used in microphone
3548 * jack detection.
3549 *
3550 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3551 * do any widget power switching.
3552 */
ce6120cc
LG		 3553int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm,
3554 const char *pin)
da34183e 3555{
91a5fca4 3556 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
da34183e 3557
91a5fca4 3558 if (!w) {
30a6a1a4 3559 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
91a5fca4 3560 return -EINVAL;
0d86733c
MB		 3561 }
3562
30a6a1a4 3563 dev_dbg(w->dapm->dev, "ASoC: force enable pin %s\n", pin);
91a5fca4
LPC		 3564 w->connected = 1;
3565 w->force = 1;
75c1f891 3566 dapm_mark_dirty(w, "force enable");
da34183e 3567
91a5fca4 3568 return 0;
da34183e
MB		 3569}
3570EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin);
3571
a5302181
LG		 3572/**
3573 * snd_soc_dapm_disable_pin - disable pin.
ce6120cc 3574 * @dapm: DAPM context
a5302181
LG		 3575 * @pin: pin name
3576 *
74b8f955 3577 * Disables input/output pin and its parents or children widgets.
a5302181
LG		 3578 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3579 * do any widget power switching.
3580 */
ce6120cc
LG		 3581int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm,
3582 const char *pin)
a5302181 3583{
ce6120cc 3584 return snd_soc_dapm_set_pin(dapm, pin, 0);
2b97eabc 3585}
a5302181 3586EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin);
2b97eabc 3587
5817b52a
MB		 3588/**
3589 * snd_soc_dapm_nc_pin - permanently disable pin.
ce6120cc 3590 * @dapm: DAPM context
5817b52a
MB		 3591 * @pin: pin name
3592 *
3593 * Marks the specified pin as being not connected, disabling it along
3594 * any parent or child widgets. At present this is identical to
3595 * snd_soc_dapm_disable_pin() but in future it will be extended to do
3596 * additional things such as disabling controls which only affect
3597 * paths through the pin.
3598 *
3599 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3600 * do any widget power switching.
3601 */
ce6120cc 3602int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin)
5817b52a 3603{
ce6120cc 3604 return snd_soc_dapm_set_pin(dapm, pin, 0);
5817b52a
MB		 3605}
3606EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin);
3607
eeec12bf 3608/**
a5302181 3609 * snd_soc_dapm_get_pin_status - get audio pin status
ce6120cc 3610 * @dapm: DAPM context
a5302181 3611 * @pin: audio signal pin endpoint (or start point)
eeec12bf 3612 *
a5302181 3613 * Get audio pin status - connected or disconnected.
eeec12bf 3614 *
a5302181 3615 * Returns 1 for connected otherwise 0.
eeec12bf 3616 */
ce6120cc
LG		 3617int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm,
3618 const char *pin)
eeec12bf 3619{
91a5fca4 3620 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
eeec12bf 3621
91a5fca4
LPC		 3622 if (w)
3623 return w->connected;
a68b38ad 3624
eeec12bf
GG		 3625 return 0;
3626}
a5302181 3627EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status);
eeec12bf 3628
1547aba9
MB		 3629/**
3630 * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint
ce6120cc 3631 * @dapm: DAPM context
1547aba9
MB		 3632 * @pin: audio signal pin endpoint (or start point)
3633 *
3634 * Mark the given endpoint or pin as ignoring suspend. When the
3635 * system is disabled a path between two endpoints flagged as ignoring
3636 * suspend will not be disabled. The path must already be enabled via
3637 * normal means at suspend time, it will not be turned on if it was not
3638 * already enabled.
3639 */
ce6120cc
LG		 3640int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm,
3641 const char *pin)
1547aba9 3642{
91a5fca4 3643 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, false);
1547aba9 3644
91a5fca4 3645 if (!w) {
30a6a1a4 3646 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
91a5fca4 3647 return -EINVAL;
1547aba9
MB		 3648 }
3649
91a5fca4
LPC		 3650 w->ignore_suspend = 1;
3651
3652 return 0;
1547aba9
MB		 3653}
3654EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend);
3655
1633281b
SW		 3656static bool snd_soc_dapm_widget_in_card_paths(struct snd_soc_card *card,
3657 struct snd_soc_dapm_widget *w)
3658{
3659 struct snd_soc_dapm_path *p;
3660
3661 list_for_each_entry(p, &card->paths, list) {
3662 if ((p->source == w) || (p->sink == w)) {
3663 dev_dbg(card->dev,
3664 "... Path %s(id:%d dapm:%p) - %s(id:%d dapm:%p)\n",
3665 p->source->name, p->source->id, p->source->dapm,
3666 p->sink->name, p->sink->id, p->sink->dapm);
3667
3668 /* Connected to something other than the codec */
3669 if (p->source->dapm != p->sink->dapm)
3670 return true;
3671 /*
3672 * Loopback connection from codec external pin to
3673 * codec external pin
3674 */
3675 if (p->sink->id == snd_soc_dapm_input) {
3676 switch (p->source->id) {
3677 case snd_soc_dapm_output:
3678 case snd_soc_dapm_micbias:
3679 return true;
3680 default:
3681 break;
3682 }
3683 }
3684 }
3685 }
3686
3687 return false;
3688}
3689
3690/**
3691 * snd_soc_dapm_auto_nc_codec_pins - call snd_soc_dapm_nc_pin for unused pins
3692 * @codec: The codec whose pins should be processed
3693 *
3694 * Automatically call snd_soc_dapm_nc_pin() for any external pins in the codec
3695 * which are unused. Pins are used if they are connected externally to the
3696 * codec, whether that be to some other device, or a loop-back connection to
3697 * the codec itself.
3698 */
3699void snd_soc_dapm_auto_nc_codec_pins(struct snd_soc_codec *codec)
3700{
3701 struct snd_soc_card *card = codec->card;
3702 struct snd_soc_dapm_context *dapm = &codec->dapm;
3703 struct snd_soc_dapm_widget *w;
3704
30a6a1a4 3705 dev_dbg(codec->dev, "ASoC: Auto NC: DAPMs: card:%p codec:%p\n",
1633281b
SW		 3706 &card->dapm, &codec->dapm);
3707
3708 list_for_each_entry(w, &card->widgets, list) {
3709 if (w->dapm != dapm)
3710 continue;
3711 switch (w->id) {
3712 case snd_soc_dapm_input:
3713 case snd_soc_dapm_output:
3714 case snd_soc_dapm_micbias:
30a6a1a4 3715 dev_dbg(codec->dev, "ASoC: Auto NC: Checking widget %s\n",
1633281b
SW		 3716 w->name);
3717 if (!snd_soc_dapm_widget_in_card_paths(card, w)) {
a094b80b 3718 dev_dbg(codec->dev,
1633281b
SW		 3719 "... Not in map; disabling\n");
3720 snd_soc_dapm_nc_pin(dapm, w->name);
3721 }
3722 break;
3723 default:
3724 break;
3725 }
3726 }
3727}
3728
2b97eabc
RP		 3729/**
3730 * snd_soc_dapm_free - free dapm resources
728a5222 3731 * @dapm: DAPM context
2b97eabc
RP		 3732 *
3733 * Free all dapm widgets and resources.
3734 */
ce6120cc 3735void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm)
2b97eabc 3736{
ce6120cc 3737 snd_soc_dapm_sys_remove(dapm->dev);
6c45e126 3738 dapm_debugfs_cleanup(dapm);
ce6120cc 3739 dapm_free_widgets(dapm);
7be31be8 3740 list_del(&dapm->list);
2b97eabc
RP		 3741}
3742EXPORT_SYMBOL_GPL(snd_soc_dapm_free);
3743
ce6120cc 3744static void soc_dapm_shutdown_codec(struct snd_soc_dapm_context *dapm)
51737470 3745{
01005a72 3746 struct snd_soc_card *card = dapm->card;
51737470
MB		 3747 struct snd_soc_dapm_widget *w;
3748 LIST_HEAD(down_list);
3749 int powerdown = 0;
3750
01005a72
LG		 3751 mutex_lock(&card->dapm_mutex);
3752
97c866de
JN		 3753 list_for_each_entry(w, &dapm->card->widgets, list) {
3754 if (w->dapm != dapm)
3755 continue;
51737470 3756 if (w->power) {
828a842f 3757 dapm_seq_insert(w, &down_list, false);
c2caa4da 3758 w->power = 0;
51737470
MB		 3759 powerdown = 1;
3760 }
3761 }
3762
3763 /* If there were no widgets to power down we're already in
3764 * standby.
3765 */
3766 if (powerdown) {
7679e42e
MB		 3767 if (dapm->bias_level == SND_SOC_BIAS_ON)
3768 snd_soc_dapm_set_bias_level(dapm,
3769 SND_SOC_BIAS_PREPARE);
828a842f 3770 dapm_seq_run(dapm, &down_list, 0, false);
7679e42e
MB		 3771 if (dapm->bias_level == SND_SOC_BIAS_PREPARE)
3772 snd_soc_dapm_set_bias_level(dapm,
3773 SND_SOC_BIAS_STANDBY);
51737470 3774 }
01005a72
LG		 3775
3776 mutex_unlock(&card->dapm_mutex);
f0fba2ad
LG		 3777}
3778
3779/*
3780 * snd_soc_dapm_shutdown - callback for system shutdown
3781 */
3782void snd_soc_dapm_shutdown(struct snd_soc_card *card)
3783{
3784 struct snd_soc_codec *codec;
3785
445632ad 3786 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
ce6120cc 3787 soc_dapm_shutdown_codec(&codec->dapm);
7679e42e
MB		 3788 if (codec->dapm.bias_level == SND_SOC_BIAS_STANDBY)
3789 snd_soc_dapm_set_bias_level(&codec->dapm,
3790 SND_SOC_BIAS_OFF);
ce6120cc 3791 }
51737470
MB		 3792}
3793
2b97eabc 3794/* Module information */
d331124d 3795MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
2b97eabc
RP		 3796MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
3797MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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