blob: 1315663c1c0990787f226c8358700bce5e0d7963 [file] [log] [blame]
Richard Purdie2b97eab2006-10-06 18:32:18 +02001/*
2 * soc-dapm.c -- ALSA SoC Dynamic Audio Power Management
3 *
4 * Copyright 2005 Wolfson Microelectronics PLC.
Liam Girdwoodd3311242008-10-12 13:17:36 +01005 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
Richard Purdie2b97eab2006-10-06 18:32:18 +02006 *
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 *
Richard Purdie2b97eab2006-10-06 18:32:18 +020012 * Features:
13 * o Changes power status of internal codec blocks depending on the
14 * dynamic configuration of codec internal audio paths and active
Mark Brown74b8f952009-06-06 11:26:15 +010015 * DACs/ADCs.
Richard Purdie2b97eab2006-10-06 18:32:18 +020016 * o Platform power domain - can support external components i.e. amps and
17 * mic/meadphone insertion events.
18 * o Automatic Mic Bias support
19 * o Jack insertion power event initiation - e.g. hp insertion will enable
20 * sinks, dacs, etc
Robert P. J. Day3a4fa0a2007-10-19 23:10:43 +020021 * o Delayed powerdown of audio susbsystem to reduce pops between a quick
Richard Purdie2b97eab2006-10-06 18:32:18 +020022 * device reopen.
23 *
24 * Todo:
25 * o DAPM power change sequencing - allow for configurable per
26 * codec sequences.
27 * o Support for analogue bias optimisation.
28 * o Support for reduced codec oversampling rates.
29 * o Support for reduced codec bias currents.
30 */
31
32#include <linux/module.h>
33#include <linux/moduleparam.h>
34#include <linux/init.h>
Mark Brown9d0624a2011-02-18 11:49:43 -080035#include <linux/async.h>
Richard Purdie2b97eab2006-10-06 18:32:18 +020036#include <linux/delay.h>
37#include <linux/pm.h>
38#include <linux/bitops.h>
39#include <linux/platform_device.h>
40#include <linux/jiffies.h>
Takashi Iwai20496ff2009-08-24 09:40:34 +020041#include <linux/debugfs.h>
Mark Brownf1aac482011-12-05 15:17:06 +000042#include <linux/pm_runtime.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090043#include <linux/slab.h>
Richard Purdie2b97eab2006-10-06 18:32:18 +020044#include <sound/core.h>
45#include <sound/pcm.h>
46#include <sound/pcm_params.h>
Liam Girdwoodce6120c2010-11-05 15:53:46 +020047#include <sound/soc.h>
Richard Purdie2b97eab2006-10-06 18:32:18 +020048#include <sound/initval.h>
49
Mark Brown84e90932010-11-04 00:07:02 -040050#include <trace/events/asoc.h>
51
Mark Brownde02d072011-09-20 21:43:24 +010052#define DAPM_UPDATE_STAT(widget, val) widget->dapm->card->dapm_stats.val++;
53
Richard Purdie2b97eab2006-10-06 18:32:18 +020054/* dapm power sequences - make this per codec in the future */
55static int dapm_up_seq[] = {
Mark Brown38357ab2009-06-06 19:03:23 +010056 [snd_soc_dapm_pre] = 0,
57 [snd_soc_dapm_supply] = 1,
58 [snd_soc_dapm_micbias] = 2,
Mark Brown010ff262009-08-17 17:39:22 +010059 [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,
Dimitris Papastamos24ff33a2010-12-16 15:53:39 +000063 [snd_soc_dapm_virt_mux] = 5,
Mark Brown010ff262009-08-17 17:39:22 +010064 [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,
Olaya, Margaritad88429a2010-12-10 21:11:44 -060070 [snd_soc_dapm_out_drv] = 10,
Mark Brown010ff262009-08-17 17:39:22 +010071 [snd_soc_dapm_hp] = 10,
72 [snd_soc_dapm_spk] = 10,
73 [snd_soc_dapm_post] = 11,
Richard Purdie2b97eab2006-10-06 18:32:18 +020074};
Ian Moltonca9c1aa2009-01-06 20:11:51 +000075
Richard Purdie2b97eab2006-10-06 18:32:18 +020076static int dapm_down_seq[] = {
Mark Brown38357ab2009-06-06 19:03:23 +010077 [snd_soc_dapm_pre] = 0,
78 [snd_soc_dapm_adc] = 1,
79 [snd_soc_dapm_hp] = 2,
Mark Brown1ca04062009-08-17 16:26:59 +010080 [snd_soc_dapm_spk] = 2,
Olaya, Margaritad88429a2010-12-10 21:11:44 -060081 [snd_soc_dapm_out_drv] = 2,
Mark Brown38357ab2009-06-06 19:03:23 +010082 [snd_soc_dapm_pga] = 4,
83 [snd_soc_dapm_mixer_named_ctl] = 5,
Mark Browne3d4dab2009-06-07 13:08:45 +010084 [snd_soc_dapm_mixer] = 5,
85 [snd_soc_dapm_dac] = 6,
86 [snd_soc_dapm_mic] = 7,
87 [snd_soc_dapm_micbias] = 8,
88 [snd_soc_dapm_mux] = 9,
Dimitris Papastamos24ff33a2010-12-16 15:53:39 +000089 [snd_soc_dapm_virt_mux] = 9,
Mark Browne3d4dab2009-06-07 13:08:45 +010090 [snd_soc_dapm_value_mux] = 9,
Mark Brown010ff262009-08-17 17:39:22 +010091 [snd_soc_dapm_aif_in] = 10,
92 [snd_soc_dapm_aif_out] = 10,
93 [snd_soc_dapm_supply] = 11,
94 [snd_soc_dapm_post] = 12,
Richard Purdie2b97eab2006-10-06 18:32:18 +020095};
96
Troy Kisky12ef1932008-10-13 17:42:14 -070097static void pop_wait(u32 pop_time)
Mark Brown15e4c722008-07-02 11:51:20 +010098{
99 if (pop_time)
100 schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time));
101}
102
Jarkko Nikulafd8d3bc2010-11-09 14:40:28 +0200103static void pop_dbg(struct device *dev, u32 pop_time, const char *fmt, ...)
Mark Brown15e4c722008-07-02 11:51:20 +0100104{
105 va_list args;
Jarkko Nikulafd8d3bc2010-11-09 14:40:28 +0200106 char *buf;
107
108 if (!pop_time)
109 return;
110
111 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
112 if (buf == NULL)
113 return;
Mark Brown15e4c722008-07-02 11:51:20 +0100114
115 va_start(args, fmt);
Jarkko Nikulafd8d3bc2010-11-09 14:40:28 +0200116 vsnprintf(buf, PAGE_SIZE, fmt, args);
Takashi Iwai9d01df02010-12-22 14:08:40 +0100117 dev_info(dev, "%s", buf);
Mark Brown15e4c722008-07-02 11:51:20 +0100118 va_end(args);
Jarkko Nikulafd8d3bc2010-11-09 14:40:28 +0200119
120 kfree(buf);
Mark Brown15e4c722008-07-02 11:51:20 +0100121}
122
Mark Browndb432b42011-10-03 21:06:40 +0100123static bool dapm_dirty_widget(struct snd_soc_dapm_widget *w)
124{
125 return !list_empty(&w->dirty);
126}
127
Mark Brown25c77c52011-10-08 13:36:03 +0100128void dapm_mark_dirty(struct snd_soc_dapm_widget *w, const char *reason)
Mark Browndb432b42011-10-03 21:06:40 +0100129{
Mark Brown75c1f892011-10-04 22:28:08 +0100130 if (!dapm_dirty_widget(w)) {
131 dev_vdbg(w->dapm->dev, "Marking %s dirty due to %s\n",
132 w->name, reason);
Mark Browndb432b42011-10-03 21:06:40 +0100133 list_add_tail(&w->dirty, &w->dapm->card->dapm_dirty);
Mark Brown75c1f892011-10-04 22:28:08 +0100134 }
Mark Browndb432b42011-10-03 21:06:40 +0100135}
Mark Brown25c77c52011-10-08 13:36:03 +0100136EXPORT_SYMBOL_GPL(dapm_mark_dirty);
Mark Browndb432b42011-10-03 21:06:40 +0100137
Richard Purdie2b97eab2006-10-06 18:32:18 +0200138/* create a new dapm widget */
Takashi Iwai88cb4292007-02-05 14:56:20 +0100139static inline struct snd_soc_dapm_widget *dapm_cnew_widget(
Richard Purdie2b97eab2006-10-06 18:32:18 +0200140 const struct snd_soc_dapm_widget *_widget)
141{
Takashi Iwai88cb4292007-02-05 14:56:20 +0100142 return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL);
Richard Purdie2b97eab2006-10-06 18:32:18 +0200143}
144
Liam Girdwood48056082011-07-20 12:23:33 +0100145/* get snd_card from DAPM context */
146static inline struct snd_card *dapm_get_snd_card(
147 struct snd_soc_dapm_context *dapm)
148{
149 if (dapm->codec)
150 return dapm->codec->card->snd_card;
151 else if (dapm->platform)
152 return dapm->platform->card->snd_card;
153 else
154 BUG();
155
156 /* unreachable */
157 return NULL;
158}
159
160/* get soc_card from DAPM context */
161static inline struct snd_soc_card *dapm_get_soc_card(
162 struct snd_soc_dapm_context *dapm)
163{
164 if (dapm->codec)
165 return dapm->codec->card;
166 else if (dapm->platform)
167 return dapm->platform->card;
168 else
169 BUG();
170
171 /* unreachable */
172 return NULL;
173}
174
Liam Girdwood0445bdf2011-06-13 19:37:36 +0100175static int soc_widget_read(struct snd_soc_dapm_widget *w, int reg)
176{
177 if (w->codec)
178 return snd_soc_read(w->codec, reg);
Liam Girdwoodb7950642011-07-04 22:10:52 +0100179 else if (w->platform)
180 return snd_soc_platform_read(w->platform, reg);
181
182 dev_err(w->dapm->dev, "no valid widget read method\n");
183 return -1;
Liam Girdwood0445bdf2011-06-13 19:37:36 +0100184}
185
186static int soc_widget_write(struct snd_soc_dapm_widget *w, int reg, int val)
187{
188 if (w->codec)
189 return snd_soc_write(w->codec, reg, val);
Liam Girdwoodb7950642011-07-04 22:10:52 +0100190 else if (w->platform)
191 return snd_soc_platform_write(w->platform, reg, val);
192
193 dev_err(w->dapm->dev, "no valid widget write method\n");
194 return -1;
Liam Girdwood0445bdf2011-06-13 19:37:36 +0100195}
196
197static int soc_widget_update_bits(struct snd_soc_dapm_widget *w,
198 unsigned short reg, unsigned int mask, unsigned int value)
199{
200 int change;
201 unsigned int old, new;
202 int ret;
203
204 ret = soc_widget_read(w, reg);
205 if (ret < 0)
206 return ret;
207
208 old = ret;
209 new = (old & ~mask) | (value & mask);
210 change = old != new;
211 if (change) {
212 ret = soc_widget_write(w, reg, new);
213 if (ret < 0)
214 return ret;
215 }
216
217 return change;
218}
219
Mark Brown452c5ea2009-05-17 21:41:23 +0100220/**
221 * snd_soc_dapm_set_bias_level - set the bias level for the system
Mark Browned5a4c42011-02-18 11:12:42 -0800222 * @dapm: DAPM context
Mark Brown452c5ea2009-05-17 21:41:23 +0100223 * @level: level to configure
224 *
225 * Configure the bias (power) levels for the SoC audio device.
226 *
227 * Returns 0 for success else error.
228 */
Mark Browned5a4c42011-02-18 11:12:42 -0800229static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm,
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200230 enum snd_soc_bias_level level)
Mark Brown452c5ea2009-05-17 21:41:23 +0100231{
Mark Browned5a4c42011-02-18 11:12:42 -0800232 struct snd_soc_card *card = dapm->card;
Mark Brown452c5ea2009-05-17 21:41:23 +0100233 int ret = 0;
234
Mark Brown84e90932010-11-04 00:07:02 -0400235 trace_snd_soc_bias_level_start(card, level);
236
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000237 if (card && card->set_bias_level)
Mark Brownd4c60052011-06-06 19:13:23 +0100238 ret = card->set_bias_level(card, dapm, level);
Mark Brown171ec6b2011-06-06 18:15:19 +0100239 if (ret != 0)
240 goto out;
Mark Brown452c5ea2009-05-17 21:41:23 +0100241
Mark Browncc4c6702011-06-06 19:03:34 +0100242 if (dapm->codec) {
243 if (dapm->codec->driver->set_bias_level)
244 ret = dapm->codec->driver->set_bias_level(dapm->codec,
245 level);
246 else
247 dapm->bias_level = level;
248 }
Mark Brown171ec6b2011-06-06 18:15:19 +0100249 if (ret != 0)
250 goto out;
251
252 if (card && card->set_bias_level_post)
Mark Brownd4c60052011-06-06 19:13:23 +0100253 ret = card->set_bias_level_post(card, dapm, level);
Mark Brown171ec6b2011-06-06 18:15:19 +0100254out:
Mark Brown84e90932010-11-04 00:07:02 -0400255 trace_snd_soc_bias_level_done(card, level);
256
Mark Brown452c5ea2009-05-17 21:41:23 +0100257 return ret;
258}
259
Richard Purdie2b97eab2006-10-06 18:32:18 +0200260/* set up initial codec paths */
261static void dapm_set_path_status(struct snd_soc_dapm_widget *w,
262 struct snd_soc_dapm_path *p, int i)
263{
264 switch (w->id) {
265 case snd_soc_dapm_switch:
Ian Moltonca9c1aa2009-01-06 20:11:51 +0000266 case snd_soc_dapm_mixer:
267 case snd_soc_dapm_mixer_named_ctl: {
Richard Purdie2b97eab2006-10-06 18:32:18 +0200268 int val;
Jon Smirl4eaa9812008-07-29 11:42:26 +0100269 struct soc_mixer_control *mc = (struct soc_mixer_control *)
Stephen Warren82cfecd2011-04-28 17:37:58 -0600270 w->kcontrol_news[i].private_value;
Jon Smirl815ecf8d2008-07-29 10:22:24 -0400271 unsigned int reg = mc->reg;
272 unsigned int shift = mc->shift;
Jon Smirl4eaa9812008-07-29 11:42:26 +0100273 int max = mc->max;
Jon Smirl815ecf8d2008-07-29 10:22:24 -0400274 unsigned int mask = (1 << fls(max)) - 1;
275 unsigned int invert = mc->invert;
Richard Purdie2b97eab2006-10-06 18:32:18 +0200276
Liam Girdwood0445bdf2011-06-13 19:37:36 +0100277 val = soc_widget_read(w, reg);
Richard Purdie2b97eab2006-10-06 18:32:18 +0200278 val = (val >> shift) & mask;
279
280 if ((invert && !val) || (!invert && val))
281 p->connect = 1;
282 else
283 p->connect = 0;
284 }
285 break;
286 case snd_soc_dapm_mux: {
Stephen Warren82cfecd2011-04-28 17:37:58 -0600287 struct soc_enum *e = (struct soc_enum *)
288 w->kcontrol_news[i].private_value;
Richard Purdie2b97eab2006-10-06 18:32:18 +0200289 int val, item, bitmask;
290
Jon Smirlf8ba0b72008-07-29 11:42:27 +0100291 for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
Mark Brown88d96082011-06-06 16:16:34 +0100292 ;
Liam Girdwood0445bdf2011-06-13 19:37:36 +0100293 val = soc_widget_read(w, e->reg);
Richard Purdie2b97eab2006-10-06 18:32:18 +0200294 item = (val >> e->shift_l) & (bitmask - 1);
295
296 p->connect = 0;
Jon Smirlf8ba0b72008-07-29 11:42:27 +0100297 for (i = 0; i < e->max; i++) {
Richard Purdie2b97eab2006-10-06 18:32:18 +0200298 if (!(strcmp(p->name, e->texts[i])) && item == i)
299 p->connect = 1;
300 }
301 }
302 break;
Dimitris Papastamos24ff33a2010-12-16 15:53:39 +0000303 case snd_soc_dapm_virt_mux: {
Stephen Warren82cfecd2011-04-28 17:37:58 -0600304 struct soc_enum *e = (struct soc_enum *)
305 w->kcontrol_news[i].private_value;
Dimitris Papastamos24ff33a2010-12-16 15:53:39 +0000306
307 p->connect = 0;
308 /* since a virtual mux has no backing registers to
309 * decide which path to connect, it will try to match
310 * with the first enumeration. This is to ensure
311 * that the default mux choice (the first) will be
312 * correctly powered up during initialization.
313 */
314 if (!strcmp(p->name, e->texts[0]))
315 p->connect = 1;
316 }
317 break;
Peter Ujfalusi2e72f8e2009-01-05 09:54:57 +0200318 case snd_soc_dapm_value_mux: {
Peter Ujfalusi74155552009-01-08 13:34:29 +0200319 struct soc_enum *e = (struct soc_enum *)
Stephen Warren82cfecd2011-04-28 17:37:58 -0600320 w->kcontrol_news[i].private_value;
Peter Ujfalusi2e72f8e2009-01-05 09:54:57 +0200321 int val, item;
322
Liam Girdwood0445bdf2011-06-13 19:37:36 +0100323 val = soc_widget_read(w, e->reg);
Peter Ujfalusi2e72f8e2009-01-05 09:54:57 +0200324 val = (val >> e->shift_l) & e->mask;
325 for (item = 0; item < e->max; item++) {
326 if (val == e->values[item])
327 break;
328 }
329
330 p->connect = 0;
331 for (i = 0; i < e->max; i++) {
332 if (!(strcmp(p->name, e->texts[i])) && item == i)
333 p->connect = 1;
334 }
335 }
336 break;
Mark Brown56563102011-10-03 22:41:09 +0100337 /* does not affect routing - always connected */
Richard Purdie2b97eab2006-10-06 18:32:18 +0200338 case snd_soc_dapm_pga:
Olaya, Margaritad88429a2010-12-10 21:11:44 -0600339 case snd_soc_dapm_out_drv:
Richard Purdie2b97eab2006-10-06 18:32:18 +0200340 case snd_soc_dapm_output:
341 case snd_soc_dapm_adc:
342 case snd_soc_dapm_input:
Mark Brown1ab97c82011-11-27 16:21:51 +0000343 case snd_soc_dapm_siggen:
Richard Purdie2b97eab2006-10-06 18:32:18 +0200344 case snd_soc_dapm_dac:
345 case snd_soc_dapm_micbias:
346 case snd_soc_dapm_vmid:
Mark Brown246d0a12009-04-22 18:24:55 +0100347 case snd_soc_dapm_supply:
Mark Brown010ff262009-08-17 17:39:22 +0100348 case snd_soc_dapm_aif_in:
349 case snd_soc_dapm_aif_out:
Richard Purdie2b97eab2006-10-06 18:32:18 +0200350 case snd_soc_dapm_hp:
351 case snd_soc_dapm_mic:
352 case snd_soc_dapm_spk:
353 case snd_soc_dapm_line:
Mark Brown56563102011-10-03 22:41:09 +0100354 p->connect = 1;
355 break;
356 /* does affect routing - dynamically connected */
Richard Purdie2b97eab2006-10-06 18:32:18 +0200357 case snd_soc_dapm_pre:
358 case snd_soc_dapm_post:
359 p->connect = 0;
360 break;
361 }
362}
363
Mark Brown74b8f952009-06-06 11:26:15 +0100364/* connect mux widget to its interconnecting audio paths */
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200365static int dapm_connect_mux(struct snd_soc_dapm_context *dapm,
Richard Purdie2b97eab2006-10-06 18:32:18 +0200366 struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest,
367 struct snd_soc_dapm_path *path, const char *control_name,
368 const struct snd_kcontrol_new *kcontrol)
369{
370 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
371 int i;
372
Jon Smirlf8ba0b72008-07-29 11:42:27 +0100373 for (i = 0; i < e->max; i++) {
Richard Purdie2b97eab2006-10-06 18:32:18 +0200374 if (!(strcmp(control_name, e->texts[i]))) {
Jarkko Nikula8ddab3f2010-12-14 12:18:30 +0200375 list_add(&path->list, &dapm->card->paths);
Richard Purdie2b97eab2006-10-06 18:32:18 +0200376 list_add(&path->list_sink, &dest->sources);
377 list_add(&path->list_source, &src->sinks);
378 path->name = (char*)e->texts[i];
379 dapm_set_path_status(dest, path, 0);
380 return 0;
381 }
382 }
383
384 return -ENODEV;
385}
386
Mark Brown74b8f952009-06-06 11:26:15 +0100387/* connect mixer widget to its interconnecting audio paths */
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200388static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm,
Richard Purdie2b97eab2006-10-06 18:32:18 +0200389 struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest,
390 struct snd_soc_dapm_path *path, const char *control_name)
391{
392 int i;
393
394 /* search for mixer kcontrol */
395 for (i = 0; i < dest->num_kcontrols; i++) {
Stephen Warren82cfecd2011-04-28 17:37:58 -0600396 if (!strcmp(control_name, dest->kcontrol_news[i].name)) {
Jarkko Nikula8ddab3f2010-12-14 12:18:30 +0200397 list_add(&path->list, &dapm->card->paths);
Richard Purdie2b97eab2006-10-06 18:32:18 +0200398 list_add(&path->list_sink, &dest->sources);
399 list_add(&path->list_source, &src->sinks);
Stephen Warren82cfecd2011-04-28 17:37:58 -0600400 path->name = dest->kcontrol_news[i].name;
Richard Purdie2b97eab2006-10-06 18:32:18 +0200401 dapm_set_path_status(dest, path, i);
402 return 0;
403 }
404 }
405 return -ENODEV;
406}
407
Stephen Warrenaf468002011-04-28 17:38:01 -0600408static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context *dapm,
Stephen Warren1007da02011-05-26 09:57:33 -0600409 struct snd_soc_dapm_widget *kcontrolw,
Stephen Warrenaf468002011-04-28 17:38:01 -0600410 const struct snd_kcontrol_new *kcontrol_new,
411 struct snd_kcontrol **kcontrol)
412{
413 struct snd_soc_dapm_widget *w;
414 int i;
415
416 *kcontrol = NULL;
417
418 list_for_each_entry(w, &dapm->card->widgets, list) {
Stephen Warren1007da02011-05-26 09:57:33 -0600419 if (w == kcontrolw || w->dapm != kcontrolw->dapm)
420 continue;
Stephen Warrenaf468002011-04-28 17:38:01 -0600421 for (i = 0; i < w->num_kcontrols; i++) {
422 if (&w->kcontrol_news[i] == kcontrol_new) {
423 if (w->kcontrols)
424 *kcontrol = w->kcontrols[i];
425 return 1;
426 }
427 }
428 }
429
430 return 0;
431}
432
Richard Purdie2b97eab2006-10-06 18:32:18 +0200433/* create new dapm mixer control */
Lars-Peter Clausen4b80b8c2011-06-09 13:22:36 +0200434static int dapm_new_mixer(struct snd_soc_dapm_widget *w)
Richard Purdie2b97eab2006-10-06 18:32:18 +0200435{
Lars-Peter Clausen4b80b8c2011-06-09 13:22:36 +0200436 struct snd_soc_dapm_context *dapm = w->dapm;
Richard Purdie2b97eab2006-10-06 18:32:18 +0200437 int i, ret = 0;
Mark Brown3e5ff4d2011-03-09 11:33:09 +0000438 size_t name_len, prefix_len;
Richard Purdie2b97eab2006-10-06 18:32:18 +0200439 struct snd_soc_dapm_path *path;
Mark Brown12ea2c72011-03-02 18:17:32 +0000440 struct snd_card *card = dapm->card->snd_card;
Mark Brownefb7ac32011-03-08 17:23:24 +0000441 const char *prefix;
Stephen Warrenfafd2172011-04-28 17:38:00 -0600442 struct snd_soc_dapm_widget_list *wlist;
443 size_t wlistsize;
Mark Brownefb7ac32011-03-08 17:23:24 +0000444
445 if (dapm->codec)
446 prefix = dapm->codec->name_prefix;
447 else
448 prefix = NULL;
Richard Purdie2b97eab2006-10-06 18:32:18 +0200449
Mark Brown3e5ff4d2011-03-09 11:33:09 +0000450 if (prefix)
451 prefix_len = strlen(prefix) + 1;
452 else
453 prefix_len = 0;
454
Richard Purdie2b97eab2006-10-06 18:32:18 +0200455 /* add kcontrol */
456 for (i = 0; i < w->num_kcontrols; i++) {
457
458 /* match name */
459 list_for_each_entry(path, &w->sources, list_sink) {
460
461 /* mixer/mux paths name must match control name */
Stephen Warren82cfecd2011-04-28 17:37:58 -0600462 if (path->name != (char *)w->kcontrol_news[i].name)
Richard Purdie2b97eab2006-10-06 18:32:18 +0200463 continue;
464
Lars-Peter Clausen82cd8762011-08-15 20:15:21 +0200465 if (w->kcontrols[i]) {
466 path->kcontrol = w->kcontrols[i];
467 continue;
468 }
469
Stephen Warrenfafd2172011-04-28 17:38:00 -0600470 wlistsize = sizeof(struct snd_soc_dapm_widget_list) +
471 sizeof(struct snd_soc_dapm_widget *),
472 wlist = kzalloc(wlistsize, GFP_KERNEL);
473 if (wlist == NULL) {
474 dev_err(dapm->dev,
475 "asoc: can't allocate widget list for %s\n",
476 w->name);
477 return -ENOMEM;
478 }
479 wlist->num_widgets = 1;
480 wlist->widgets[0] = w;
481
Ian Moltonca9c1aa2009-01-06 20:11:51 +0000482 /* add dapm control with long name.
483 * for dapm_mixer this is the concatenation of the
484 * mixer and kcontrol name.
485 * for dapm_mixer_named_ctl this is simply the
486 * kcontrol name.
487 */
Stephen Warren82cfecd2011-04-28 17:37:58 -0600488 name_len = strlen(w->kcontrol_news[i].name) + 1;
Mark Brown07495f32009-03-05 17:06:23 +0000489 if (w->id != snd_soc_dapm_mixer_named_ctl)
Ian Moltonca9c1aa2009-01-06 20:11:51 +0000490 name_len += 1 + strlen(w->name);
491
Mark Brown219b93f2008-10-28 13:02:31 +0000492 path->long_name = kmalloc(name_len, GFP_KERNEL);
Ian Moltonca9c1aa2009-01-06 20:11:51 +0000493
Stephen Warrenfafd2172011-04-28 17:38:00 -0600494 if (path->long_name == NULL) {
495 kfree(wlist);
Richard Purdie2b97eab2006-10-06 18:32:18 +0200496 return -ENOMEM;
Stephen Warrenfafd2172011-04-28 17:38:00 -0600497 }
Richard Purdie2b97eab2006-10-06 18:32:18 +0200498
Ian Moltonca9c1aa2009-01-06 20:11:51 +0000499 switch (w->id) {
Ian Moltonca9c1aa2009-01-06 20:11:51 +0000500 default:
Mark Brown3e5ff4d2011-03-09 11:33:09 +0000501 /* The control will get a prefix from
502 * the control creation process but
503 * we're also using the same prefix
504 * for widgets so cut the prefix off
505 * the front of the widget name.
506 */
Ian Moltonca9c1aa2009-01-06 20:11:51 +0000507 snprintf(path->long_name, name_len, "%s %s",
Mark Brown3e5ff4d2011-03-09 11:33:09 +0000508 w->name + prefix_len,
Stephen Warren82cfecd2011-04-28 17:37:58 -0600509 w->kcontrol_news[i].name);
Mark Brown07495f32009-03-05 17:06:23 +0000510 break;
Ian Moltonca9c1aa2009-01-06 20:11:51 +0000511 case snd_soc_dapm_mixer_named_ctl:
512 snprintf(path->long_name, name_len, "%s",
Stephen Warren82cfecd2011-04-28 17:37:58 -0600513 w->kcontrol_news[i].name);
Mark Brown07495f32009-03-05 17:06:23 +0000514 break;
Ian Moltonca9c1aa2009-01-06 20:11:51 +0000515 }
516
Mark Brown219b93f2008-10-28 13:02:31 +0000517 path->long_name[name_len - 1] = '\0';
518
Stephen Warrenfafd2172011-04-28 17:38:00 -0600519 path->kcontrol = snd_soc_cnew(&w->kcontrol_news[i],
520 wlist, path->long_name,
521 prefix);
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200522 ret = snd_ctl_add(card, path->kcontrol);
Richard Purdie2b97eab2006-10-06 18:32:18 +0200523 if (ret < 0) {
Jarkko Nikulaf7d41ae2010-11-09 14:40:27 +0200524 dev_err(dapm->dev,
525 "asoc: failed to add dapm kcontrol %s: %d\n",
526 path->long_name, ret);
Stephen Warrenfafd2172011-04-28 17:38:00 -0600527 kfree(wlist);
Richard Purdie2b97eab2006-10-06 18:32:18 +0200528 kfree(path->long_name);
529 path->long_name = NULL;
530 return ret;
531 }
Stephen Warrenfad59882011-04-28 17:37:59 -0600532 w->kcontrols[i] = path->kcontrol;
Richard Purdie2b97eab2006-10-06 18:32:18 +0200533 }
534 }
535 return ret;
536}
537
538/* create new dapm mux control */
Lars-Peter Clausen4b80b8c2011-06-09 13:22:36 +0200539static int dapm_new_mux(struct snd_soc_dapm_widget *w)
Richard Purdie2b97eab2006-10-06 18:32:18 +0200540{
Lars-Peter Clausen4b80b8c2011-06-09 13:22:36 +0200541 struct snd_soc_dapm_context *dapm = w->dapm;
Richard Purdie2b97eab2006-10-06 18:32:18 +0200542 struct snd_soc_dapm_path *path = NULL;
543 struct snd_kcontrol *kcontrol;
Mark Brown12ea2c72011-03-02 18:17:32 +0000544 struct snd_card *card = dapm->card->snd_card;
Mark Brownefb7ac32011-03-08 17:23:24 +0000545 const char *prefix;
Mark Brown3e5ff4d2011-03-09 11:33:09 +0000546 size_t prefix_len;
Stephen Warrenaf468002011-04-28 17:38:01 -0600547 int ret;
Stephen Warrenfafd2172011-04-28 17:38:00 -0600548 struct snd_soc_dapm_widget_list *wlist;
Stephen Warrenaf468002011-04-28 17:38:01 -0600549 int shared, wlistentries;
Stephen Warrenfafd2172011-04-28 17:38:00 -0600550 size_t wlistsize;
Stephen Warrenaf468002011-04-28 17:38:01 -0600551 char *name;
Richard Purdie2b97eab2006-10-06 18:32:18 +0200552
Stephen Warrenaf468002011-04-28 17:38:01 -0600553 if (w->num_kcontrols != 1) {
554 dev_err(dapm->dev,
555 "asoc: mux %s has incorrect number of controls\n",
556 w->name);
Richard Purdie2b97eab2006-10-06 18:32:18 +0200557 return -EINVAL;
558 }
559
Stephen Warren1007da02011-05-26 09:57:33 -0600560 shared = dapm_is_shared_kcontrol(dapm, w, &w->kcontrol_news[0],
Stephen Warrenaf468002011-04-28 17:38:01 -0600561 &kcontrol);
562 if (kcontrol) {
563 wlist = kcontrol->private_data;
564 wlistentries = wlist->num_widgets + 1;
565 } else {
566 wlist = NULL;
567 wlistentries = 1;
568 }
Stephen Warrenfafd2172011-04-28 17:38:00 -0600569 wlistsize = sizeof(struct snd_soc_dapm_widget_list) +
Stephen Warrenaf468002011-04-28 17:38:01 -0600570 wlistentries * sizeof(struct snd_soc_dapm_widget *),
571 wlist = krealloc(wlist, wlistsize, GFP_KERNEL);
Stephen Warrenfafd2172011-04-28 17:38:00 -0600572 if (wlist == NULL) {
573 dev_err(dapm->dev,
574 "asoc: can't allocate widget list for %s\n", w->name);
575 return -ENOMEM;
576 }
Stephen Warrenaf468002011-04-28 17:38:01 -0600577 wlist->num_widgets = wlistentries;
578 wlist->widgets[wlistentries - 1] = w;
Stephen Warrenfafd2172011-04-28 17:38:00 -0600579
Stephen Warrenaf468002011-04-28 17:38:01 -0600580 if (!kcontrol) {
581 if (dapm->codec)
582 prefix = dapm->codec->name_prefix;
583 else
584 prefix = NULL;
Mark Brownefb7ac32011-03-08 17:23:24 +0000585
Stephen Warrenaf468002011-04-28 17:38:01 -0600586 if (shared) {
587 name = w->kcontrol_news[0].name;
588 prefix_len = 0;
589 } else {
590 name = w->name;
591 if (prefix)
592 prefix_len = strlen(prefix) + 1;
593 else
594 prefix_len = 0;
595 }
Mark Brown3e5ff4d2011-03-09 11:33:09 +0000596
Stephen Warrenaf468002011-04-28 17:38:01 -0600597 /*
598 * The control will get a prefix from the control creation
599 * process but we're also using the same prefix for widgets so
600 * cut the prefix off the front of the widget name.
601 */
602 kcontrol = snd_soc_cnew(&w->kcontrol_news[0], wlist,
603 name + prefix_len, prefix);
604 ret = snd_ctl_add(card, kcontrol);
605 if (ret < 0) {
Mark Brown53daf202011-09-05 10:51:05 -0700606 dev_err(dapm->dev, "failed to add kcontrol %s: %d\n",
607 w->name, ret);
Stephen Warrenaf468002011-04-28 17:38:01 -0600608 kfree(wlist);
609 return ret;
610 }
611 }
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200612
Stephen Warrenaf468002011-04-28 17:38:01 -0600613 kcontrol->private_data = wlist;
Richard Purdie2b97eab2006-10-06 18:32:18 +0200614
Stephen Warrenfad59882011-04-28 17:37:59 -0600615 w->kcontrols[0] = kcontrol;
616
Richard Purdie2b97eab2006-10-06 18:32:18 +0200617 list_for_each_entry(path, &w->sources, list_sink)
618 path->kcontrol = kcontrol;
619
Stephen Warrenaf468002011-04-28 17:38:01 -0600620 return 0;
Richard Purdie2b97eab2006-10-06 18:32:18 +0200621}
622
623/* create new dapm volume control */
Lars-Peter Clausen4b80b8c2011-06-09 13:22:36 +0200624static int dapm_new_pga(struct snd_soc_dapm_widget *w)
Richard Purdie2b97eab2006-10-06 18:32:18 +0200625{
Mark Browna6c65732010-03-03 17:45:21 +0000626 if (w->num_kcontrols)
Jarkko Nikulaf7d41ae2010-11-09 14:40:27 +0200627 dev_err(w->dapm->dev,
628 "asoc: PGA controls not supported: '%s'\n", w->name);
Richard Purdie2b97eab2006-10-06 18:32:18 +0200629
Mark Browna6c65732010-03-03 17:45:21 +0000630 return 0;
Richard Purdie2b97eab2006-10-06 18:32:18 +0200631}
632
633/* reset 'walked' bit for each dapm path */
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200634static inline void dapm_clear_walk(struct snd_soc_dapm_context *dapm)
Richard Purdie2b97eab2006-10-06 18:32:18 +0200635{
636 struct snd_soc_dapm_path *p;
637
Jarkko Nikula8ddab3f2010-12-14 12:18:30 +0200638 list_for_each_entry(p, &dapm->card->paths, list)
Richard Purdie2b97eab2006-10-06 18:32:18 +0200639 p->walked = 0;
640}
641
Mark Brown99497882010-05-07 20:24:05 +0100642/* We implement power down on suspend by checking the power state of
643 * the ALSA card - when we are suspending the ALSA state for the card
644 * is set to D3.
645 */
646static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget)
647{
Mark Brown12ea2c72011-03-02 18:17:32 +0000648 int level = snd_power_get_state(widget->dapm->card->snd_card);
Mark Brown99497882010-05-07 20:24:05 +0100649
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000650 switch (level) {
Mark Brown99497882010-05-07 20:24:05 +0100651 case SNDRV_CTL_POWER_D3hot:
652 case SNDRV_CTL_POWER_D3cold:
Mark Brown1547aba2010-05-07 21:11:40 +0100653 if (widget->ignore_suspend)
Jarkko Nikulaf7d41ae2010-11-09 14:40:27 +0200654 dev_dbg(widget->dapm->dev, "%s ignoring suspend\n",
655 widget->name);
Mark Brown1547aba2010-05-07 21:11:40 +0100656 return widget->ignore_suspend;
Mark Brown99497882010-05-07 20:24:05 +0100657 default:
658 return 1;
659 }
660}
661
Richard Purdie2b97eab2006-10-06 18:32:18 +0200662/*
663 * Recursively check for a completed path to an active or physically connected
664 * output widget. Returns number of complete paths.
665 */
666static int is_connected_output_ep(struct snd_soc_dapm_widget *widget)
667{
668 struct snd_soc_dapm_path *path;
669 int con = 0;
670
Mark Brown024dc072011-10-09 11:52:05 +0100671 if (widget->outputs >= 0)
672 return widget->outputs;
673
Mark Brownde02d072011-09-20 21:43:24 +0100674 DAPM_UPDATE_STAT(widget, path_checks);
675
Mark Brown246d0a12009-04-22 18:24:55 +0100676 if (widget->id == snd_soc_dapm_supply)
677 return 0;
678
Mark Brown010ff262009-08-17 17:39:22 +0100679 switch (widget->id) {
680 case snd_soc_dapm_adc:
681 case snd_soc_dapm_aif_out:
Mark Brown024dc072011-10-09 11:52:05 +0100682 if (widget->active) {
683 widget->outputs = snd_soc_dapm_suspend_check(widget);
684 return widget->outputs;
685 }
Mark Brown010ff262009-08-17 17:39:22 +0100686 default:
687 break;
688 }
Richard Purdie2b97eab2006-10-06 18:32:18 +0200689
690 if (widget->connected) {
691 /* connected pin ? */
Mark Brown024dc072011-10-09 11:52:05 +0100692 if (widget->id == snd_soc_dapm_output && !widget->ext) {
693 widget->outputs = snd_soc_dapm_suspend_check(widget);
694 return widget->outputs;
695 }
Richard Purdie2b97eab2006-10-06 18:32:18 +0200696
697 /* connected jack or spk ? */
Mark Brown024dc072011-10-09 11:52:05 +0100698 if (widget->id == snd_soc_dapm_hp ||
699 widget->id == snd_soc_dapm_spk ||
700 (widget->id == snd_soc_dapm_line &&
701 !list_empty(&widget->sources))) {
702 widget->outputs = snd_soc_dapm_suspend_check(widget);
703 return widget->outputs;
704 }
Richard Purdie2b97eab2006-10-06 18:32:18 +0200705 }
706
707 list_for_each_entry(path, &widget->sinks, list_source) {
Mark Browne56235e2011-09-21 18:19:14 +0100708 DAPM_UPDATE_STAT(widget, neighbour_checks);
709
Mark Brownbf3a9e12011-06-13 16:42:29 +0100710 if (path->weak)
711 continue;
712
Richard Purdie2b97eab2006-10-06 18:32:18 +0200713 if (path->walked)
714 continue;
715
716 if (path->sink && path->connect) {
717 path->walked = 1;
718 con += is_connected_output_ep(path->sink);
719 }
720 }
721
Mark Brown024dc072011-10-09 11:52:05 +0100722 widget->outputs = con;
723
Richard Purdie2b97eab2006-10-06 18:32:18 +0200724 return con;
725}
726
727/*
728 * Recursively check for a completed path to an active or physically connected
729 * input widget. Returns number of complete paths.
730 */
731static int is_connected_input_ep(struct snd_soc_dapm_widget *widget)
732{
733 struct snd_soc_dapm_path *path;
734 int con = 0;
735
Mark Brown024dc072011-10-09 11:52:05 +0100736 if (widget->inputs >= 0)
737 return widget->inputs;
738
Mark Brownde02d072011-09-20 21:43:24 +0100739 DAPM_UPDATE_STAT(widget, path_checks);
740
Mark Brown246d0a12009-04-22 18:24:55 +0100741 if (widget->id == snd_soc_dapm_supply)
742 return 0;
743
Richard Purdie2b97eab2006-10-06 18:32:18 +0200744 /* active stream ? */
Mark Brown010ff262009-08-17 17:39:22 +0100745 switch (widget->id) {
746 case snd_soc_dapm_dac:
747 case snd_soc_dapm_aif_in:
Mark Brown024dc072011-10-09 11:52:05 +0100748 if (widget->active) {
749 widget->inputs = snd_soc_dapm_suspend_check(widget);
750 return widget->inputs;
751 }
Mark Brown010ff262009-08-17 17:39:22 +0100752 default:
753 break;
754 }
Richard Purdie2b97eab2006-10-06 18:32:18 +0200755
756 if (widget->connected) {
757 /* connected pin ? */
Mark Brown024dc072011-10-09 11:52:05 +0100758 if (widget->id == snd_soc_dapm_input && !widget->ext) {
759 widget->inputs = snd_soc_dapm_suspend_check(widget);
760 return widget->inputs;
761 }
Richard Purdie2b97eab2006-10-06 18:32:18 +0200762
763 /* connected VMID/Bias for lower pops */
Mark Brown024dc072011-10-09 11:52:05 +0100764 if (widget->id == snd_soc_dapm_vmid) {
765 widget->inputs = snd_soc_dapm_suspend_check(widget);
766 return widget->inputs;
767 }
Richard Purdie2b97eab2006-10-06 18:32:18 +0200768
769 /* connected jack ? */
Peter Ujfalusieaeae5d2009-09-30 09:27:24 +0300770 if (widget->id == snd_soc_dapm_mic ||
Mark Brown024dc072011-10-09 11:52:05 +0100771 (widget->id == snd_soc_dapm_line &&
772 !list_empty(&widget->sinks))) {
773 widget->inputs = snd_soc_dapm_suspend_check(widget);
774 return widget->inputs;
775 }
776
Mark Brown1ab97c82011-11-27 16:21:51 +0000777 /* signal generator */
778 if (widget->id == snd_soc_dapm_siggen) {
779 widget->inputs = snd_soc_dapm_suspend_check(widget);
780 return widget->inputs;
781 }
Richard Purdie2b97eab2006-10-06 18:32:18 +0200782 }
783
784 list_for_each_entry(path, &widget->sources, list_sink) {
Mark Browne56235e2011-09-21 18:19:14 +0100785 DAPM_UPDATE_STAT(widget, neighbour_checks);
786
Mark Brownbf3a9e12011-06-13 16:42:29 +0100787 if (path->weak)
788 continue;
789
Richard Purdie2b97eab2006-10-06 18:32:18 +0200790 if (path->walked)
791 continue;
792
793 if (path->source && path->connect) {
794 path->walked = 1;
795 con += is_connected_input_ep(path->source);
796 }
797 }
798
Mark Brown024dc072011-10-09 11:52:05 +0100799 widget->inputs = con;
800
Richard Purdie2b97eab2006-10-06 18:32:18 +0200801 return con;
802}
803
804/*
Jarkko Nikulae2be2cc2008-06-25 14:42:07 +0300805 * Handler for generic register modifier widget.
806 */
807int dapm_reg_event(struct snd_soc_dapm_widget *w,
808 struct snd_kcontrol *kcontrol, int event)
809{
810 unsigned int val;
811
812 if (SND_SOC_DAPM_EVENT_ON(event))
813 val = w->on_val;
814 else
815 val = w->off_val;
816
Liam Girdwood0445bdf2011-06-13 19:37:36 +0100817 soc_widget_update_bits(w, -(w->reg + 1),
Jarkko Nikulae2be2cc2008-06-25 14:42:07 +0300818 w->mask << w->shift, val << w->shift);
819
820 return 0;
821}
Mark Brown11589412008-07-29 11:42:23 +0100822EXPORT_SYMBOL_GPL(dapm_reg_event);
Jarkko Nikulae2be2cc2008-06-25 14:42:07 +0300823
Mark Brownd8050022011-09-28 18:28:23 +0100824static int dapm_widget_power_check(struct snd_soc_dapm_widget *w)
825{
Mark Brown9b8a83b2011-10-04 22:15:59 +0100826 if (w->power_checked)
827 return w->new_power;
828
Mark Brownd8050022011-09-28 18:28:23 +0100829 if (w->force)
Mark Brown9b8a83b2011-10-04 22:15:59 +0100830 w->new_power = 1;
Mark Brownd8050022011-09-28 18:28:23 +0100831 else
Mark Brown9b8a83b2011-10-04 22:15:59 +0100832 w->new_power = w->power_check(w);
833
834 w->power_checked = true;
835
836 return w->new_power;
Mark Brownd8050022011-09-28 18:28:23 +0100837}
838
Mark Browncd0f2d42009-04-20 16:56:59 +0100839/* Generic check to see if a widget should be powered.
840 */
841static int dapm_generic_check_power(struct snd_soc_dapm_widget *w)
842{
843 int in, out;
844
Mark Brownde02d072011-09-20 21:43:24 +0100845 DAPM_UPDATE_STAT(w, power_checks);
846
Mark Browncd0f2d42009-04-20 16:56:59 +0100847 in = is_connected_input_ep(w);
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200848 dapm_clear_walk(w->dapm);
Mark Browncd0f2d42009-04-20 16:56:59 +0100849 out = is_connected_output_ep(w);
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200850 dapm_clear_walk(w->dapm);
Mark Browncd0f2d42009-04-20 16:56:59 +0100851 return out != 0 && in != 0;
852}
853
Mark Brown6ea31b92009-04-20 17:15:41 +0100854/* Check to see if an ADC has power */
855static int dapm_adc_check_power(struct snd_soc_dapm_widget *w)
856{
857 int in;
858
Mark Brownde02d072011-09-20 21:43:24 +0100859 DAPM_UPDATE_STAT(w, power_checks);
860
Mark Brown6ea31b92009-04-20 17:15:41 +0100861 if (w->active) {
862 in = is_connected_input_ep(w);
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200863 dapm_clear_walk(w->dapm);
Mark Brown6ea31b92009-04-20 17:15:41 +0100864 return in != 0;
865 } else {
866 return dapm_generic_check_power(w);
867 }
868}
869
870/* Check to see if a DAC has power */
871static int dapm_dac_check_power(struct snd_soc_dapm_widget *w)
872{
873 int out;
874
Mark Brownde02d072011-09-20 21:43:24 +0100875 DAPM_UPDATE_STAT(w, power_checks);
876
Mark Brown6ea31b92009-04-20 17:15:41 +0100877 if (w->active) {
878 out = is_connected_output_ep(w);
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200879 dapm_clear_walk(w->dapm);
Mark Brown6ea31b92009-04-20 17:15:41 +0100880 return out != 0;
881 } else {
882 return dapm_generic_check_power(w);
883 }
884}
885
Mark Brown246d0a12009-04-22 18:24:55 +0100886/* Check to see if a power supply is needed */
887static int dapm_supply_check_power(struct snd_soc_dapm_widget *w)
888{
889 struct snd_soc_dapm_path *path;
Mark Brown246d0a12009-04-22 18:24:55 +0100890
Mark Brownde02d072011-09-20 21:43:24 +0100891 DAPM_UPDATE_STAT(w, power_checks);
892
Mark Brown246d0a12009-04-22 18:24:55 +0100893 /* Check if one of our outputs is connected */
894 list_for_each_entry(path, &w->sinks, list_source) {
Mark Browna8fdac82011-09-28 18:20:26 +0100895 DAPM_UPDATE_STAT(w, neighbour_checks);
896
Mark Brownbf3a9e12011-06-13 16:42:29 +0100897 if (path->weak)
898 continue;
899
Mark Brown215edda2009-09-08 18:59:05 +0100900 if (path->connected &&
901 !path->connected(path->source, path->sink))
902 continue;
903
Mark Brown30173582011-02-11 11:42:19 +0000904 if (!path->sink)
905 continue;
906
Mark Brownf68d7e12011-10-04 22:57:50 +0100907 if (dapm_widget_power_check(path->sink))
908 return 1;
Mark Brown246d0a12009-04-22 18:24:55 +0100909 }
910
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200911 dapm_clear_walk(w->dapm);
Mark Brown246d0a12009-04-22 18:24:55 +0100912
Mark Brownf68d7e12011-10-04 22:57:50 +0100913 return 0;
Mark Brown246d0a12009-04-22 18:24:55 +0100914}
915
Mark Brown35c64bc2011-09-28 18:23:53 +0100916static int dapm_always_on_check_power(struct snd_soc_dapm_widget *w)
917{
918 return 1;
919}
920
Mark Brown38357ab2009-06-06 19:03:23 +0100921static int dapm_seq_compare(struct snd_soc_dapm_widget *a,
922 struct snd_soc_dapm_widget *b,
Mark Brown828a8422011-01-15 13:14:30 +0000923 bool power_up)
Mark Brown42aa3412009-03-01 19:21:10 +0000924{
Mark Brown828a8422011-01-15 13:14:30 +0000925 int *sort;
926
927 if (power_up)
928 sort = dapm_up_seq;
929 else
930 sort = dapm_down_seq;
931
Mark Brown38357ab2009-06-06 19:03:23 +0100932 if (sort[a->id] != sort[b->id])
933 return sort[a->id] - sort[b->id];
Mark Brown20e48592011-01-15 13:40:50 +0000934 if (a->subseq != b->subseq) {
935 if (power_up)
936 return a->subseq - b->subseq;
937 else
938 return b->subseq - a->subseq;
939 }
Mark Brownb22ead22009-06-07 12:51:26 +0100940 if (a->reg != b->reg)
941 return a->reg - b->reg;
Mark Brown84dab562010-11-12 15:28:42 +0000942 if (a->dapm != b->dapm)
943 return (unsigned long)a->dapm - (unsigned long)b->dapm;
Mark Brown42aa3412009-03-01 19:21:10 +0000944
Mark Brown38357ab2009-06-06 19:03:23 +0100945 return 0;
946}
Mark Brown42aa3412009-03-01 19:21:10 +0000947
Mark Brown38357ab2009-06-06 19:03:23 +0100948/* Insert a widget in order into a DAPM power sequence. */
949static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget,
950 struct list_head *list,
Mark Brown828a8422011-01-15 13:14:30 +0000951 bool power_up)
Mark Brown38357ab2009-06-06 19:03:23 +0100952{
953 struct snd_soc_dapm_widget *w;
954
955 list_for_each_entry(w, list, power_list)
Mark Brown828a8422011-01-15 13:14:30 +0000956 if (dapm_seq_compare(new_widget, w, power_up) < 0) {
Mark Brown38357ab2009-06-06 19:03:23 +0100957 list_add_tail(&new_widget->power_list, &w->power_list);
958 return;
Mark Brown42aa3412009-03-01 19:21:10 +0000959 }
Mark Brown6ea31b92009-04-20 17:15:41 +0100960
Mark Brown38357ab2009-06-06 19:03:23 +0100961 list_add_tail(&new_widget->power_list, list);
962}
Mark Brown42aa3412009-03-01 19:21:10 +0000963
Mark Brown68f89ad2010-11-03 23:51:49 -0400964static void dapm_seq_check_event(struct snd_soc_dapm_context *dapm,
965 struct snd_soc_dapm_widget *w, int event)
966{
967 struct snd_soc_card *card = dapm->card;
968 const char *ev_name;
969 int power, ret;
970
971 switch (event) {
972 case SND_SOC_DAPM_PRE_PMU:
973 ev_name = "PRE_PMU";
974 power = 1;
975 break;
976 case SND_SOC_DAPM_POST_PMU:
977 ev_name = "POST_PMU";
978 power = 1;
979 break;
980 case SND_SOC_DAPM_PRE_PMD:
981 ev_name = "PRE_PMD";
982 power = 0;
983 break;
984 case SND_SOC_DAPM_POST_PMD:
985 ev_name = "POST_PMD";
986 power = 0;
987 break;
988 default:
989 BUG();
990 return;
991 }
992
993 if (w->power != power)
994 return;
995
996 if (w->event && (w->event_flags & event)) {
997 pop_dbg(dapm->dev, card->pop_time, "pop test : %s %s\n",
998 w->name, ev_name);
Mark Brown84e90932010-11-04 00:07:02 -0400999 trace_snd_soc_dapm_widget_event_start(w, event);
Mark Brown68f89ad2010-11-03 23:51:49 -04001000 ret = w->event(w, NULL, event);
Mark Brown84e90932010-11-04 00:07:02 -04001001 trace_snd_soc_dapm_widget_event_done(w, event);
Mark Brown68f89ad2010-11-03 23:51:49 -04001002 if (ret < 0)
1003 pr_err("%s: %s event failed: %d\n",
1004 ev_name, w->name, ret);
1005 }
1006}
1007
Mark Brownb22ead22009-06-07 12:51:26 +01001008/* Apply the coalesced changes from a DAPM sequence */
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001009static void dapm_seq_run_coalesced(struct snd_soc_dapm_context *dapm,
Mark Brownb22ead22009-06-07 12:51:26 +01001010 struct list_head *pending)
Mark Brown163cac02009-06-07 10:12:52 +01001011{
Jarkko Nikula3a45b862010-11-05 20:35:21 +02001012 struct snd_soc_card *card = dapm->card;
Mark Brown68f89ad2010-11-03 23:51:49 -04001013 struct snd_soc_dapm_widget *w;
1014 int reg, power;
Mark Brownb22ead22009-06-07 12:51:26 +01001015 unsigned int value = 0;
1016 unsigned int mask = 0;
1017 unsigned int cur_mask;
1018
1019 reg = list_first_entry(pending, struct snd_soc_dapm_widget,
1020 power_list)->reg;
1021
1022 list_for_each_entry(w, pending, power_list) {
1023 cur_mask = 1 << w->shift;
1024 BUG_ON(reg != w->reg);
1025
1026 if (w->invert)
1027 power = !w->power;
1028 else
1029 power = w->power;
1030
1031 mask |= cur_mask;
1032 if (power)
1033 value |= cur_mask;
1034
Jarkko Nikulafd8d3bc2010-11-09 14:40:28 +02001035 pop_dbg(dapm->dev, card->pop_time,
Mark Brownb22ead22009-06-07 12:51:26 +01001036 "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
1037 w->name, reg, value, mask);
Mark Brown81628102009-06-07 13:21:24 +01001038
Mark Brown68f89ad2010-11-03 23:51:49 -04001039 /* Check for events */
1040 dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMU);
1041 dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMD);
Mark Brownb22ead22009-06-07 12:51:26 +01001042 }
1043
Mark Brown81628102009-06-07 13:21:24 +01001044 if (reg >= 0) {
Mark Brown29376bc2011-06-19 13:49:28 +01001045 /* Any widget will do, they should all be updating the
1046 * same register.
1047 */
1048 w = list_first_entry(pending, struct snd_soc_dapm_widget,
1049 power_list);
1050
Jarkko Nikulafd8d3bc2010-11-09 14:40:28 +02001051 pop_dbg(dapm->dev, card->pop_time,
Mark Brown81628102009-06-07 13:21:24 +01001052 "pop test : Applying 0x%x/0x%x to %x in %dms\n",
Jarkko Nikula3a45b862010-11-05 20:35:21 +02001053 value, mask, reg, card->pop_time);
1054 pop_wait(card->pop_time);
Liam Girdwood0445bdf2011-06-13 19:37:36 +01001055 soc_widget_update_bits(w, reg, mask, value);
Mark Brown81628102009-06-07 13:21:24 +01001056 }
1057
1058 list_for_each_entry(w, pending, power_list) {
Mark Brown68f89ad2010-11-03 23:51:49 -04001059 dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMU);
1060 dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMD);
Mark Brown42aa3412009-03-01 19:21:10 +00001061 }
Mark Brown42aa3412009-03-01 19:21:10 +00001062}
1063
Mark Brownb22ead22009-06-07 12:51:26 +01001064/* Apply a DAPM power sequence.
1065 *
1066 * We walk over a pre-sorted list of widgets to apply power to. In
1067 * order to minimise the number of writes to the device required
1068 * multiple widgets will be updated in a single write where possible.
1069 * Currently anything that requires more than a single write is not
1070 * handled.
1071 */
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001072static void dapm_seq_run(struct snd_soc_dapm_context *dapm,
Mark Brown828a8422011-01-15 13:14:30 +00001073 struct list_head *list, int event, bool power_up)
Mark Brownb22ead22009-06-07 12:51:26 +01001074{
1075 struct snd_soc_dapm_widget *w, *n;
1076 LIST_HEAD(pending);
1077 int cur_sort = -1;
Mark Brown20e48592011-01-15 13:40:50 +00001078 int cur_subseq = -1;
Mark Brownb22ead22009-06-07 12:51:26 +01001079 int cur_reg = SND_SOC_NOPM;
Jarkko Nikula7be31be82010-12-14 12:18:32 +02001080 struct snd_soc_dapm_context *cur_dapm = NULL;
Mark Brown474b62d2011-01-18 16:14:44 +00001081 int ret, i;
Mark Brown828a8422011-01-15 13:14:30 +00001082 int *sort;
1083
1084 if (power_up)
1085 sort = dapm_up_seq;
1086 else
1087 sort = dapm_down_seq;
Mark Brown163cac02009-06-07 10:12:52 +01001088
Mark Brownb22ead22009-06-07 12:51:26 +01001089 list_for_each_entry_safe(w, n, list, power_list) {
1090 ret = 0;
1091
1092 /* Do we need to apply any queued changes? */
Jarkko Nikula7be31be82010-12-14 12:18:32 +02001093 if (sort[w->id] != cur_sort || w->reg != cur_reg ||
Mark Brown20e48592011-01-15 13:40:50 +00001094 w->dapm != cur_dapm || w->subseq != cur_subseq) {
Mark Brownb22ead22009-06-07 12:51:26 +01001095 if (!list_empty(&pending))
Jarkko Nikula7be31be82010-12-14 12:18:32 +02001096 dapm_seq_run_coalesced(cur_dapm, &pending);
Mark Brownb22ead22009-06-07 12:51:26 +01001097
Mark Brown474b62d2011-01-18 16:14:44 +00001098 if (cur_dapm && cur_dapm->seq_notifier) {
1099 for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
1100 if (sort[i] == cur_sort)
1101 cur_dapm->seq_notifier(cur_dapm,
Mark Brownf85a9e02011-01-26 21:41:28 +00001102 i,
1103 cur_subseq);
Mark Brown474b62d2011-01-18 16:14:44 +00001104 }
1105
Mark Brownb22ead22009-06-07 12:51:26 +01001106 INIT_LIST_HEAD(&pending);
1107 cur_sort = -1;
Mark Brownb0b3e6f2011-07-16 10:55:08 +09001108 cur_subseq = INT_MIN;
Mark Brownb22ead22009-06-07 12:51:26 +01001109 cur_reg = SND_SOC_NOPM;
Jarkko Nikula7be31be82010-12-14 12:18:32 +02001110 cur_dapm = NULL;
Mark Brownb22ead22009-06-07 12:51:26 +01001111 }
1112
Mark Brown163cac02009-06-07 10:12:52 +01001113 switch (w->id) {
1114 case snd_soc_dapm_pre:
1115 if (!w->event)
Mark Brownb22ead22009-06-07 12:51:26 +01001116 list_for_each_entry_safe_continue(w, n, list,
1117 power_list);
Mark Brown163cac02009-06-07 10:12:52 +01001118
Mark Brownb22ead22009-06-07 12:51:26 +01001119 if (event == SND_SOC_DAPM_STREAM_START)
Mark Brown163cac02009-06-07 10:12:52 +01001120 ret = w->event(w,
1121 NULL, SND_SOC_DAPM_PRE_PMU);
Mark Brownb22ead22009-06-07 12:51:26 +01001122 else if (event == SND_SOC_DAPM_STREAM_STOP)
Mark Brown163cac02009-06-07 10:12:52 +01001123 ret = w->event(w,
1124 NULL, SND_SOC_DAPM_PRE_PMD);
Mark Brown163cac02009-06-07 10:12:52 +01001125 break;
1126
1127 case snd_soc_dapm_post:
1128 if (!w->event)
Mark Brownb22ead22009-06-07 12:51:26 +01001129 list_for_each_entry_safe_continue(w, n, list,
1130 power_list);
Mark Brown163cac02009-06-07 10:12:52 +01001131
Mark Brownb22ead22009-06-07 12:51:26 +01001132 if (event == SND_SOC_DAPM_STREAM_START)
Mark Brown163cac02009-06-07 10:12:52 +01001133 ret = w->event(w,
1134 NULL, SND_SOC_DAPM_POST_PMU);
Mark Brownb22ead22009-06-07 12:51:26 +01001135 else if (event == SND_SOC_DAPM_STREAM_STOP)
Mark Brown163cac02009-06-07 10:12:52 +01001136 ret = w->event(w,
1137 NULL, SND_SOC_DAPM_POST_PMD);
Mark Brownb22ead22009-06-07 12:51:26 +01001138 break;
1139
Mark Brown163cac02009-06-07 10:12:52 +01001140 default:
Mark Brown81628102009-06-07 13:21:24 +01001141 /* Queue it up for application */
1142 cur_sort = sort[w->id];
Mark Brown20e48592011-01-15 13:40:50 +00001143 cur_subseq = w->subseq;
Mark Brown81628102009-06-07 13:21:24 +01001144 cur_reg = w->reg;
Jarkko Nikula7be31be82010-12-14 12:18:32 +02001145 cur_dapm = w->dapm;
Mark Brown81628102009-06-07 13:21:24 +01001146 list_move(&w->power_list, &pending);
1147 break;
Mark Brown163cac02009-06-07 10:12:52 +01001148 }
Mark Brownb22ead22009-06-07 12:51:26 +01001149
1150 if (ret < 0)
Jarkko Nikulaf7d41ae2010-11-09 14:40:27 +02001151 dev_err(w->dapm->dev,
1152 "Failed to apply widget power: %d\n", ret);
Mark Brown163cac02009-06-07 10:12:52 +01001153 }
Mark Brownb22ead22009-06-07 12:51:26 +01001154
1155 if (!list_empty(&pending))
Mark Brown28e86802011-03-08 19:29:53 +00001156 dapm_seq_run_coalesced(cur_dapm, &pending);
Mark Brown474b62d2011-01-18 16:14:44 +00001157
1158 if (cur_dapm && cur_dapm->seq_notifier) {
1159 for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
1160 if (sort[i] == cur_sort)
1161 cur_dapm->seq_notifier(cur_dapm,
Mark Brownf85a9e02011-01-26 21:41:28 +00001162 i, cur_subseq);
Mark Brown474b62d2011-01-18 16:14:44 +00001163 }
Mark Brown163cac02009-06-07 10:12:52 +01001164}
1165
Mark Brown97404f22010-12-14 16:13:57 +00001166static void dapm_widget_update(struct snd_soc_dapm_context *dapm)
1167{
1168 struct snd_soc_dapm_update *update = dapm->update;
1169 struct snd_soc_dapm_widget *w;
1170 int ret;
1171
1172 if (!update)
1173 return;
1174
1175 w = update->widget;
1176
1177 if (w->event &&
1178 (w->event_flags & SND_SOC_DAPM_PRE_REG)) {
1179 ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG);
1180 if (ret != 0)
1181 pr_err("%s DAPM pre-event failed: %d\n",
1182 w->name, ret);
1183 }
1184
1185 ret = snd_soc_update_bits(w->codec, update->reg, update->mask,
1186 update->val);
1187 if (ret < 0)
1188 pr_err("%s DAPM update failed: %d\n", w->name, ret);
1189
1190 if (w->event &&
1191 (w->event_flags & SND_SOC_DAPM_POST_REG)) {
1192 ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG);
1193 if (ret != 0)
1194 pr_err("%s DAPM post-event failed: %d\n",
1195 w->name, ret);
1196 }
1197}
1198
Mark Brown9d0624a2011-02-18 11:49:43 -08001199/* Async callback run prior to DAPM sequences - brings to _PREPARE if
1200 * they're changing state.
1201 */
1202static void dapm_pre_sequence_async(void *data, async_cookie_t cookie)
1203{
1204 struct snd_soc_dapm_context *d = data;
1205 int ret;
Mark Brown97404f22010-12-14 16:13:57 +00001206
Mark Brown56fba412011-06-04 11:25:10 +01001207 /* If we're off and we're not supposed to be go into STANDBY */
1208 if (d->bias_level == SND_SOC_BIAS_OFF &&
1209 d->target_bias_level != SND_SOC_BIAS_OFF) {
Mark Brownf1aac482011-12-05 15:17:06 +00001210 if (d->dev)
1211 pm_runtime_get_sync(d->dev);
1212
Mark Brown9d0624a2011-02-18 11:49:43 -08001213 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1214 if (ret != 0)
1215 dev_err(d->dev,
1216 "Failed to turn on bias: %d\n", ret);
1217 }
1218
Mark Brown56fba412011-06-04 11:25:10 +01001219 /* Prepare for a STADDBY->ON or ON->STANDBY transition */
1220 if (d->bias_level != d->target_bias_level) {
Mark Brown9d0624a2011-02-18 11:49:43 -08001221 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE);
1222 if (ret != 0)
1223 dev_err(d->dev,
1224 "Failed to prepare bias: %d\n", ret);
1225 }
1226}
1227
1228/* Async callback run prior to DAPM sequences - brings to their final
1229 * state.
1230 */
1231static void dapm_post_sequence_async(void *data, async_cookie_t cookie)
1232{
1233 struct snd_soc_dapm_context *d = data;
1234 int ret;
1235
1236 /* If we just powered the last thing off drop to standby bias */
Mark Brown56fba412011-06-04 11:25:10 +01001237 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1238 (d->target_bias_level == SND_SOC_BIAS_STANDBY ||
1239 d->target_bias_level == SND_SOC_BIAS_OFF)) {
Mark Brown9d0624a2011-02-18 11:49:43 -08001240 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1241 if (ret != 0)
1242 dev_err(d->dev, "Failed to apply standby bias: %d\n",
1243 ret);
1244 }
1245
1246 /* If we're in standby and can support bias off then do that */
Mark Brown56fba412011-06-04 11:25:10 +01001247 if (d->bias_level == SND_SOC_BIAS_STANDBY &&
1248 d->target_bias_level == SND_SOC_BIAS_OFF) {
Mark Brown9d0624a2011-02-18 11:49:43 -08001249 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF);
1250 if (ret != 0)
1251 dev_err(d->dev, "Failed to turn off bias: %d\n", ret);
Mark Brownf1aac482011-12-05 15:17:06 +00001252
1253 if (d->dev)
1254 pm_runtime_put_sync(d->dev);
Mark Brown9d0624a2011-02-18 11:49:43 -08001255 }
1256
1257 /* If we just powered up then move to active bias */
Mark Brown56fba412011-06-04 11:25:10 +01001258 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1259 d->target_bias_level == SND_SOC_BIAS_ON) {
Mark Brown9d0624a2011-02-18 11:49:43 -08001260 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON);
1261 if (ret != 0)
1262 dev_err(d->dev, "Failed to apply active bias: %d\n",
1263 ret);
1264 }
1265}
Mark Brown97404f22010-12-14 16:13:57 +00001266
Mark Brownfe4fda52011-10-03 22:36:57 +01001267static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget *peer,
1268 bool power, bool connect)
1269{
1270 /* If a connection is being made or broken then that update
1271 * will have marked the peer dirty, otherwise the widgets are
1272 * not connected and this update has no impact. */
1273 if (!connect)
1274 return;
1275
1276 /* If the peer is already in the state we're moving to then we
1277 * won't have an impact on it. */
1278 if (power != peer->power)
Mark Brown75c1f892011-10-04 22:28:08 +01001279 dapm_mark_dirty(peer, "peer state change");
Mark Brownfe4fda52011-10-03 22:36:57 +01001280}
1281
Mark Brown05623c42011-09-28 17:02:31 +01001282static void dapm_widget_set_power(struct snd_soc_dapm_widget *w, bool power,
1283 struct list_head *up_list,
1284 struct list_head *down_list)
1285{
Mark Browndb432b42011-10-03 21:06:40 +01001286 struct snd_soc_dapm_path *path;
1287
Mark Brown05623c42011-09-28 17:02:31 +01001288 if (w->power == power)
1289 return;
1290
1291 trace_snd_soc_dapm_widget_power(w, power);
1292
Mark Browndb432b42011-10-03 21:06:40 +01001293 /* If we changed our power state perhaps our neigbours changed
Mark Brownfe4fda52011-10-03 22:36:57 +01001294 * also.
Mark Browndb432b42011-10-03 21:06:40 +01001295 */
1296 list_for_each_entry(path, &w->sources, list_sink) {
1297 if (path->source) {
Mark Brownfe4fda52011-10-03 22:36:57 +01001298 dapm_widget_set_peer_power(path->source, power,
1299 path->connect);
Mark Browndb432b42011-10-03 21:06:40 +01001300 }
1301 }
Mark Brownf3bf3e42011-10-04 22:43:31 +01001302 switch (w->id) {
1303 case snd_soc_dapm_supply:
1304 /* Supplies can't affect their outputs, only their inputs */
1305 break;
1306 default:
1307 list_for_each_entry(path, &w->sinks, list_source) {
1308 if (path->sink) {
1309 dapm_widget_set_peer_power(path->sink, power,
1310 path->connect);
1311 }
Mark Browndb432b42011-10-03 21:06:40 +01001312 }
Mark Brownf3bf3e42011-10-04 22:43:31 +01001313 break;
Mark Browndb432b42011-10-03 21:06:40 +01001314 }
1315
Mark Brown05623c42011-09-28 17:02:31 +01001316 if (power)
1317 dapm_seq_insert(w, up_list, true);
1318 else
1319 dapm_seq_insert(w, down_list, false);
1320
1321 w->power = power;
1322}
1323
Mark Brown7c81beb2011-09-20 22:22:32 +01001324static void dapm_power_one_widget(struct snd_soc_dapm_widget *w,
1325 struct list_head *up_list,
1326 struct list_head *down_list)
1327{
Mark Brown7c81beb2011-09-20 22:22:32 +01001328 int power;
1329
1330 switch (w->id) {
1331 case snd_soc_dapm_pre:
1332 dapm_seq_insert(w, down_list, false);
1333 break;
1334 case snd_soc_dapm_post:
1335 dapm_seq_insert(w, up_list, true);
1336 break;
1337
1338 default:
Mark Brownd8050022011-09-28 18:28:23 +01001339 power = dapm_widget_power_check(w);
Mark Brown7c81beb2011-09-20 22:22:32 +01001340
Mark Brown05623c42011-09-28 17:02:31 +01001341 dapm_widget_set_power(w, power, up_list, down_list);
Mark Brown7c81beb2011-09-20 22:22:32 +01001342 break;
1343 }
1344}
1345
Mark Brown42aa3412009-03-01 19:21:10 +00001346/*
Richard Purdie2b97eab2006-10-06 18:32:18 +02001347 * Scan each dapm widget for complete audio path.
1348 * A complete path is a route that has valid endpoints i.e.:-
1349 *
1350 * o DAC to output pin.
1351 * o Input Pin to ADC.
1352 * o Input pin to Output pin (bypass, sidetone)
1353 * o DAC to ADC (loopback).
1354 */
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001355static int dapm_power_widgets(struct snd_soc_dapm_context *dapm, int event)
Richard Purdie2b97eab2006-10-06 18:32:18 +02001356{
Mark Brown12ea2c72011-03-02 18:17:32 +00001357 struct snd_soc_card *card = dapm->card;
Richard Purdie2b97eab2006-10-06 18:32:18 +02001358 struct snd_soc_dapm_widget *w;
Jarkko Nikula7be31be82010-12-14 12:18:32 +02001359 struct snd_soc_dapm_context *d;
Mark Brown291f3bb2009-06-07 13:57:17 +01001360 LIST_HEAD(up_list);
1361 LIST_HEAD(down_list);
Mark Brown9d0624a2011-02-18 11:49:43 -08001362 LIST_HEAD(async_domain);
Mark Brown56fba412011-06-04 11:25:10 +01001363 enum snd_soc_bias_level bias;
Richard Purdie2b97eab2006-10-06 18:32:18 +02001364
Mark Brown84e90932010-11-04 00:07:02 -04001365 trace_snd_soc_dapm_start(card);
1366
Mark Brown56fba412011-06-04 11:25:10 +01001367 list_for_each_entry(d, &card->dapm_list, list) {
1368 if (d->n_widgets || d->codec == NULL) {
1369 if (d->idle_bias_off)
1370 d->target_bias_level = SND_SOC_BIAS_OFF;
1371 else
1372 d->target_bias_level = SND_SOC_BIAS_STANDBY;
1373 }
1374 }
Jarkko Nikula7be31be82010-12-14 12:18:32 +02001375
Mark Brownde02d072011-09-20 21:43:24 +01001376 memset(&card->dapm_stats, 0, sizeof(card->dapm_stats));
1377
Mark Brown9b8a83b2011-10-04 22:15:59 +01001378 list_for_each_entry(w, &card->widgets, list) {
1379 w->power_checked = false;
Mark Brown024dc072011-10-09 11:52:05 +01001380 w->inputs = -1;
1381 w->outputs = -1;
Mark Brown9b8a83b2011-10-04 22:15:59 +01001382 }
1383
Mark Brown6d3ddc82009-05-16 17:47:29 +01001384 /* Check which widgets we need to power and store them in
Mark Browndb432b42011-10-03 21:06:40 +01001385 * lists indicating if they should be powered up or down. We
1386 * only check widgets that have been flagged as dirty but note
1387 * that new widgets may be added to the dirty list while we
1388 * iterate.
Mark Brown6d3ddc82009-05-16 17:47:29 +01001389 */
Mark Browndb432b42011-10-03 21:06:40 +01001390 list_for_each_entry(w, &card->dapm_dirty, dirty) {
Mark Brown7c81beb2011-09-20 22:22:32 +01001391 dapm_power_one_widget(w, &up_list, &down_list);
Richard Purdie2b97eab2006-10-06 18:32:18 +02001392 }
1393
Mark Brownf9de6d72011-09-28 17:19:47 +01001394 list_for_each_entry(w, &card->widgets, list) {
Mark Browndb432b42011-10-03 21:06:40 +01001395 list_del_init(&w->dirty);
1396
Mark Brownf9de6d72011-09-28 17:19:47 +01001397 if (w->power) {
1398 d = w->dapm;
1399
1400 /* Supplies and micbiases only bring the
1401 * context up to STANDBY as unless something
1402 * else is active and passing audio they
1403 * generally don't require full power.
1404 */
1405 switch (w->id) {
1406 case snd_soc_dapm_supply:
1407 case snd_soc_dapm_micbias:
1408 if (d->target_bias_level < SND_SOC_BIAS_STANDBY)
1409 d->target_bias_level = SND_SOC_BIAS_STANDBY;
1410 break;
1411 default:
1412 d->target_bias_level = SND_SOC_BIAS_ON;
1413 break;
1414 }
1415 }
1416
1417 }
1418
Mark Brownb14b76a2009-08-17 11:55:38 +01001419 /* If there are no DAPM widgets then try to figure out power from the
1420 * event type.
1421 */
Jarkko Nikula97c866d2010-12-14 12:18:31 +02001422 if (!dapm->n_widgets) {
Mark Brownb14b76a2009-08-17 11:55:38 +01001423 switch (event) {
1424 case SND_SOC_DAPM_STREAM_START:
1425 case SND_SOC_DAPM_STREAM_RESUME:
Mark Brown56fba412011-06-04 11:25:10 +01001426 dapm->target_bias_level = SND_SOC_BIAS_ON;
Mark Brownb14b76a2009-08-17 11:55:38 +01001427 break;
Jarkko Nikula862af8a2010-12-10 20:53:55 +02001428 case SND_SOC_DAPM_STREAM_STOP:
Liam Girdwoode7c80e22012-01-16 15:23:31 +00001429 if (dapm->codec && dapm->codec->active)
Mark Brown56fba412011-06-04 11:25:10 +01001430 dapm->target_bias_level = SND_SOC_BIAS_ON;
1431 else
1432 dapm->target_bias_level = SND_SOC_BIAS_STANDBY;
Jarkko Nikula862af8a2010-12-10 20:53:55 +02001433 break;
Mark Brown50b6bce2009-11-23 13:11:53 +00001434 case SND_SOC_DAPM_STREAM_SUSPEND:
Mark Brown56fba412011-06-04 11:25:10 +01001435 dapm->target_bias_level = SND_SOC_BIAS_STANDBY;
Mark Brown50b6bce2009-11-23 13:11:53 +00001436 break;
Mark Brownb14b76a2009-08-17 11:55:38 +01001437 case SND_SOC_DAPM_STREAM_NOP:
Mark Brown56fba412011-06-04 11:25:10 +01001438 dapm->target_bias_level = dapm->bias_level;
Mark Brown50b6bce2009-11-23 13:11:53 +00001439 break;
Mark Brownb14b76a2009-08-17 11:55:38 +01001440 default:
1441 break;
1442 }
1443 }
1444
Mark Brown85a843c2011-09-21 21:29:47 +01001445 /* Force all contexts in the card to the same bias state if
1446 * they're not ground referenced.
1447 */
Mark Brown56fba412011-06-04 11:25:10 +01001448 bias = SND_SOC_BIAS_OFF;
Mark Brown52ba67b2011-04-04 21:05:11 +09001449 list_for_each_entry(d, &card->dapm_list, list)
Mark Brown56fba412011-06-04 11:25:10 +01001450 if (d->target_bias_level > bias)
1451 bias = d->target_bias_level;
Mark Brown52ba67b2011-04-04 21:05:11 +09001452 list_for_each_entry(d, &card->dapm_list, list)
Mark Brown85a843c2011-09-21 21:29:47 +01001453 if (!d->idle_bias_off)
1454 d->target_bias_level = bias;
Mark Brown52ba67b2011-04-04 21:05:11 +09001455
Mark Brownde02d072011-09-20 21:43:24 +01001456 trace_snd_soc_dapm_walk_done(card);
Mark Brown52ba67b2011-04-04 21:05:11 +09001457
Mark Brown9d0624a2011-02-18 11:49:43 -08001458 /* Run all the bias changes in parallel */
1459 list_for_each_entry(d, &dapm->card->dapm_list, list)
1460 async_schedule_domain(dapm_pre_sequence_async, d,
1461 &async_domain);
1462 async_synchronize_full_domain(&async_domain);
Mark Brown452c5ea2009-05-17 21:41:23 +01001463
Mark Brown6d3ddc82009-05-16 17:47:29 +01001464 /* Power down widgets first; try to avoid amplifying pops. */
Mark Brown828a8422011-01-15 13:14:30 +00001465 dapm_seq_run(dapm, &down_list, event, false);
Mark Brown6d3ddc82009-05-16 17:47:29 +01001466
Mark Brown97404f22010-12-14 16:13:57 +00001467 dapm_widget_update(dapm);
1468
Mark Brown6d3ddc82009-05-16 17:47:29 +01001469 /* Now power up. */
Mark Brown828a8422011-01-15 13:14:30 +00001470 dapm_seq_run(dapm, &up_list, event, true);
Richard Purdie2b97eab2006-10-06 18:32:18 +02001471
Mark Brown9d0624a2011-02-18 11:49:43 -08001472 /* Run all the bias changes in parallel */
1473 list_for_each_entry(d, &dapm->card->dapm_list, list)
1474 async_schedule_domain(dapm_post_sequence_async, d,
1475 &async_domain);
1476 async_synchronize_full_domain(&async_domain);
Mark Brown452c5ea2009-05-17 21:41:23 +01001477
Jarkko Nikulafd8d3bc2010-11-09 14:40:28 +02001478 pop_dbg(dapm->dev, card->pop_time,
1479 "DAPM sequencing finished, waiting %dms\n", card->pop_time);
Jarkko Nikula3a45b862010-11-05 20:35:21 +02001480 pop_wait(card->pop_time);
Mark Browncb507e72009-07-08 18:54:57 +01001481
Mark Brown84e90932010-11-04 00:07:02 -04001482 trace_snd_soc_dapm_done(card);
1483
Mark Brown42aa3412009-03-01 19:21:10 +00001484 return 0;
Richard Purdie2b97eab2006-10-06 18:32:18 +02001485}
1486
Mark Brown79fb9382009-08-21 16:38:13 +01001487#ifdef CONFIG_DEBUG_FS
1488static int dapm_widget_power_open_file(struct inode *inode, struct file *file)
1489{
1490 file->private_data = inode->i_private;
1491 return 0;
1492}
1493
1494static ssize_t dapm_widget_power_read_file(struct file *file,
1495 char __user *user_buf,
1496 size_t count, loff_t *ppos)
1497{
1498 struct snd_soc_dapm_widget *w = file->private_data;
1499 char *buf;
1500 int in, out;
1501 ssize_t ret;
1502 struct snd_soc_dapm_path *p = NULL;
1503
1504 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
1505 if (!buf)
1506 return -ENOMEM;
1507
1508 in = is_connected_input_ep(w);
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001509 dapm_clear_walk(w->dapm);
Mark Brown79fb9382009-08-21 16:38:13 +01001510 out = is_connected_output_ep(w);
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001511 dapm_clear_walk(w->dapm);
Mark Brown79fb9382009-08-21 16:38:13 +01001512
Mark Brownd033c362009-12-04 15:25:56 +00001513 ret = snprintf(buf, PAGE_SIZE, "%s: %s in %d out %d",
Mark Brown79fb9382009-08-21 16:38:13 +01001514 w->name, w->power ? "On" : "Off", in, out);
1515
Mark Brownd033c362009-12-04 15:25:56 +00001516 if (w->reg >= 0)
1517 ret += snprintf(buf + ret, PAGE_SIZE - ret,
1518 " - R%d(0x%x) bit %d",
1519 w->reg, w->reg, w->shift);
1520
1521 ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n");
1522
Mark Brown3eef08b2009-09-14 16:49:00 +01001523 if (w->sname)
1524 ret += snprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n",
1525 w->sname,
1526 w->active ? "active" : "inactive");
Mark Brown79fb9382009-08-21 16:38:13 +01001527
1528 list_for_each_entry(p, &w->sources, list_sink) {
Mark Brown215edda2009-09-08 18:59:05 +01001529 if (p->connected && !p->connected(w, p->sink))
1530 continue;
1531
Mark Brown79fb9382009-08-21 16:38:13 +01001532 if (p->connect)
1533 ret += snprintf(buf + ret, PAGE_SIZE - ret,
Dimitris Papastamos67f5ed62011-02-24 17:09:32 +00001534 " in \"%s\" \"%s\"\n",
Mark Brown79fb9382009-08-21 16:38:13 +01001535 p->name ? p->name : "static",
1536 p->source->name);
1537 }
1538 list_for_each_entry(p, &w->sinks, list_source) {
Mark Brown215edda2009-09-08 18:59:05 +01001539 if (p->connected && !p->connected(w, p->sink))
1540 continue;
1541
Mark Brown79fb9382009-08-21 16:38:13 +01001542 if (p->connect)
1543 ret += snprintf(buf + ret, PAGE_SIZE - ret,
Dimitris Papastamos67f5ed62011-02-24 17:09:32 +00001544 " out \"%s\" \"%s\"\n",
Mark Brown79fb9382009-08-21 16:38:13 +01001545 p->name ? p->name : "static",
1546 p->sink->name);
1547 }
1548
1549 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
1550
1551 kfree(buf);
1552 return ret;
1553}
1554
1555static const struct file_operations dapm_widget_power_fops = {
1556 .open = dapm_widget_power_open_file,
1557 .read = dapm_widget_power_read_file,
Arnd Bergmann6038f372010-08-15 18:52:59 +02001558 .llseek = default_llseek,
Mark Brown79fb9382009-08-21 16:38:13 +01001559};
1560
Mark Brownef49e4f2011-04-04 20:48:13 +09001561static int dapm_bias_open_file(struct inode *inode, struct file *file)
1562{
1563 file->private_data = inode->i_private;
1564 return 0;
1565}
1566
1567static ssize_t dapm_bias_read_file(struct file *file, char __user *user_buf,
1568 size_t count, loff_t *ppos)
1569{
1570 struct snd_soc_dapm_context *dapm = file->private_data;
1571 char *level;
1572
1573 switch (dapm->bias_level) {
1574 case SND_SOC_BIAS_ON:
1575 level = "On\n";
1576 break;
1577 case SND_SOC_BIAS_PREPARE:
1578 level = "Prepare\n";
1579 break;
1580 case SND_SOC_BIAS_STANDBY:
1581 level = "Standby\n";
1582 break;
1583 case SND_SOC_BIAS_OFF:
1584 level = "Off\n";
1585 break;
1586 default:
1587 BUG();
1588 level = "Unknown\n";
1589 break;
1590 }
1591
1592 return simple_read_from_buffer(user_buf, count, ppos, level,
1593 strlen(level));
1594}
1595
1596static const struct file_operations dapm_bias_fops = {
1597 .open = dapm_bias_open_file,
1598 .read = dapm_bias_read_file,
1599 .llseek = default_llseek,
1600};
1601
Lars-Peter Clausen8eecaf62011-04-30 19:45:48 +02001602void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
1603 struct dentry *parent)
Mark Brown79fb9382009-08-21 16:38:13 +01001604{
Mark Brown79fb9382009-08-21 16:38:13 +01001605 struct dentry *d;
1606
Lars-Peter Clausen8eecaf62011-04-30 19:45:48 +02001607 dapm->debugfs_dapm = debugfs_create_dir("dapm", parent);
1608
1609 if (!dapm->debugfs_dapm) {
1610 printk(KERN_WARNING
1611 "Failed to create DAPM debugfs directory\n");
Mark Brown79fb9382009-08-21 16:38:13 +01001612 return;
Lars-Peter Clausen8eecaf62011-04-30 19:45:48 +02001613 }
Mark Brown79fb9382009-08-21 16:38:13 +01001614
Mark Brownef49e4f2011-04-04 20:48:13 +09001615 d = debugfs_create_file("bias_level", 0444,
1616 dapm->debugfs_dapm, dapm,
1617 &dapm_bias_fops);
1618 if (!d)
1619 dev_warn(dapm->dev,
1620 "ASoC: Failed to create bias level debugfs file\n");
Mark Brown79fb9382009-08-21 16:38:13 +01001621}
Lars-Peter Clausend5d1e0b2011-04-30 19:45:49 +02001622
1623static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
1624{
1625 struct snd_soc_dapm_context *dapm = w->dapm;
1626 struct dentry *d;
1627
1628 if (!dapm->debugfs_dapm || !w->name)
1629 return;
1630
1631 d = debugfs_create_file(w->name, 0444,
1632 dapm->debugfs_dapm, w,
1633 &dapm_widget_power_fops);
1634 if (!d)
1635 dev_warn(w->dapm->dev,
1636 "ASoC: Failed to create %s debugfs file\n",
1637 w->name);
1638}
1639
Lars-Peter Clausen6c45e122011-04-30 19:45:50 +02001640static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
1641{
1642 debugfs_remove_recursive(dapm->debugfs_dapm);
1643}
1644
Mark Brown79fb9382009-08-21 16:38:13 +01001645#else
Lars-Peter Clausen8eecaf62011-04-30 19:45:48 +02001646void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
1647 struct dentry *parent)
Mark Brown79fb9382009-08-21 16:38:13 +01001648{
1649}
Lars-Peter Clausend5d1e0b2011-04-30 19:45:49 +02001650
1651static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
1652{
1653}
1654
Lars-Peter Clausen6c45e122011-04-30 19:45:50 +02001655static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
1656{
1657}
1658
Mark Brown79fb9382009-08-21 16:38:13 +01001659#endif
1660
Richard Purdie2b97eab2006-10-06 18:32:18 +02001661/* test and update the power status of a mux widget */
Adrian Bunkd9c96cf2006-11-28 12:10:09 +01001662static int dapm_mux_update_power(struct snd_soc_dapm_widget *widget,
Mark Brown3a655772009-10-05 17:23:30 +01001663 struct snd_kcontrol *kcontrol, int change,
1664 int mux, struct soc_enum *e)
Richard Purdie2b97eab2006-10-06 18:32:18 +02001665{
1666 struct snd_soc_dapm_path *path;
1667 int found = 0;
1668
Peter Ujfalusieff317d2009-01-15 14:40:47 +02001669 if (widget->id != snd_soc_dapm_mux &&
Dimitris Papastamos24ff33a2010-12-16 15:53:39 +00001670 widget->id != snd_soc_dapm_virt_mux &&
Peter Ujfalusieff317d2009-01-15 14:40:47 +02001671 widget->id != snd_soc_dapm_value_mux)
Richard Purdie2b97eab2006-10-06 18:32:18 +02001672 return -ENODEV;
1673
Mark Brown3a655772009-10-05 17:23:30 +01001674 if (!change)
Richard Purdie2b97eab2006-10-06 18:32:18 +02001675 return 0;
1676
1677 /* find dapm widget path assoc with kcontrol */
Jarkko Nikula8ddab3f2010-12-14 12:18:30 +02001678 list_for_each_entry(path, &widget->dapm->card->paths, list) {
Richard Purdie2b97eab2006-10-06 18:32:18 +02001679 if (path->kcontrol != kcontrol)
1680 continue;
1681
Richard Zhaocb01e2b2008-10-07 08:05:20 +08001682 if (!path->name || !e->texts[mux])
Richard Purdie2b97eab2006-10-06 18:32:18 +02001683 continue;
1684
1685 found = 1;
1686 /* we now need to match the string in the enum to the path */
Mark Browndb432b42011-10-03 21:06:40 +01001687 if (!(strcmp(path->name, e->texts[mux]))) {
Richard Purdie2b97eab2006-10-06 18:32:18 +02001688 path->connect = 1; /* new connection */
Mark Brown75c1f892011-10-04 22:28:08 +01001689 dapm_mark_dirty(path->source, "mux connection");
Mark Browndb432b42011-10-03 21:06:40 +01001690 } else {
1691 if (path->connect)
Mark Brown75c1f892011-10-04 22:28:08 +01001692 dapm_mark_dirty(path->source,
1693 "mux disconnection");
Richard Purdie2b97eab2006-10-06 18:32:18 +02001694 path->connect = 0; /* old connection must be powered down */
Mark Browndb432b42011-10-03 21:06:40 +01001695 }
Richard Purdie2b97eab2006-10-06 18:32:18 +02001696 }
1697
Mark Browndb432b42011-10-03 21:06:40 +01001698 if (found) {
Mark Brown75c1f892011-10-04 22:28:08 +01001699 dapm_mark_dirty(widget, "mux change");
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001700 dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP);
Mark Browndb432b42011-10-03 21:06:40 +01001701 }
Richard Purdie2b97eab2006-10-06 18:32:18 +02001702
1703 return 0;
1704}
Richard Purdie2b97eab2006-10-06 18:32:18 +02001705
Milan plzik1b075e32008-01-10 14:39:46 +01001706/* test and update the power status of a mixer or switch widget */
Adrian Bunkd9c96cf2006-11-28 12:10:09 +01001707static int dapm_mixer_update_power(struct snd_soc_dapm_widget *widget,
Mark Brown283375c2009-12-07 18:09:03 +00001708 struct snd_kcontrol *kcontrol, int connect)
Richard Purdie2b97eab2006-10-06 18:32:18 +02001709{
1710 struct snd_soc_dapm_path *path;
1711 int found = 0;
1712
Milan plzik1b075e32008-01-10 14:39:46 +01001713 if (widget->id != snd_soc_dapm_mixer &&
Ian Moltonca9c1aa2009-01-06 20:11:51 +00001714 widget->id != snd_soc_dapm_mixer_named_ctl &&
Milan plzik1b075e32008-01-10 14:39:46 +01001715 widget->id != snd_soc_dapm_switch)
Richard Purdie2b97eab2006-10-06 18:32:18 +02001716 return -ENODEV;
1717
Richard Purdie2b97eab2006-10-06 18:32:18 +02001718 /* find dapm widget path assoc with kcontrol */
Jarkko Nikula8ddab3f2010-12-14 12:18:30 +02001719 list_for_each_entry(path, &widget->dapm->card->paths, list) {
Richard Purdie2b97eab2006-10-06 18:32:18 +02001720 if (path->kcontrol != kcontrol)
1721 continue;
1722
1723 /* found, now check type */
1724 found = 1;
Mark Brown283375c2009-12-07 18:09:03 +00001725 path->connect = connect;
Mark Brown75c1f892011-10-04 22:28:08 +01001726 dapm_mark_dirty(path->source, "mixer connection");
Richard Purdie2b97eab2006-10-06 18:32:18 +02001727 }
1728
Mark Browndb432b42011-10-03 21:06:40 +01001729 if (found) {
Mark Brown75c1f892011-10-04 22:28:08 +01001730 dapm_mark_dirty(widget, "mixer update");
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001731 dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP);
Mark Browndb432b42011-10-03 21:06:40 +01001732 }
Richard Purdie2b97eab2006-10-06 18:32:18 +02001733
1734 return 0;
1735}
Richard Purdie2b97eab2006-10-06 18:32:18 +02001736
1737/* show dapm widget status in sys fs */
1738static ssize_t dapm_widget_show(struct device *dev,
1739 struct device_attribute *attr, char *buf)
1740{
Mark Brown36ae1a92012-01-06 17:12:45 -08001741 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +00001742 struct snd_soc_codec *codec =rtd->codec;
Richard Purdie2b97eab2006-10-06 18:32:18 +02001743 struct snd_soc_dapm_widget *w;
1744 int count = 0;
1745 char *state = "not set";
1746
Jarkko Nikula97c866d2010-12-14 12:18:31 +02001747 list_for_each_entry(w, &codec->card->widgets, list) {
1748 if (w->dapm != &codec->dapm)
1749 continue;
Richard Purdie2b97eab2006-10-06 18:32:18 +02001750
1751 /* only display widgets that burnm power */
1752 switch (w->id) {
1753 case snd_soc_dapm_hp:
1754 case snd_soc_dapm_mic:
1755 case snd_soc_dapm_spk:
1756 case snd_soc_dapm_line:
1757 case snd_soc_dapm_micbias:
1758 case snd_soc_dapm_dac:
1759 case snd_soc_dapm_adc:
1760 case snd_soc_dapm_pga:
Olaya, Margaritad88429a2010-12-10 21:11:44 -06001761 case snd_soc_dapm_out_drv:
Richard Purdie2b97eab2006-10-06 18:32:18 +02001762 case snd_soc_dapm_mixer:
Ian Moltonca9c1aa2009-01-06 20:11:51 +00001763 case snd_soc_dapm_mixer_named_ctl:
Mark Brown246d0a12009-04-22 18:24:55 +01001764 case snd_soc_dapm_supply:
Richard Purdie2b97eab2006-10-06 18:32:18 +02001765 if (w->name)
1766 count += sprintf(buf + count, "%s: %s\n",
1767 w->name, w->power ? "On":"Off");
1768 break;
1769 default:
1770 break;
1771 }
1772 }
1773
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001774 switch (codec->dapm.bias_level) {
Mark Brown0be98982008-05-19 12:31:28 +02001775 case SND_SOC_BIAS_ON:
1776 state = "On";
Richard Purdie2b97eab2006-10-06 18:32:18 +02001777 break;
Mark Brown0be98982008-05-19 12:31:28 +02001778 case SND_SOC_BIAS_PREPARE:
1779 state = "Prepare";
Richard Purdie2b97eab2006-10-06 18:32:18 +02001780 break;
Mark Brown0be98982008-05-19 12:31:28 +02001781 case SND_SOC_BIAS_STANDBY:
1782 state = "Standby";
Richard Purdie2b97eab2006-10-06 18:32:18 +02001783 break;
Mark Brown0be98982008-05-19 12:31:28 +02001784 case SND_SOC_BIAS_OFF:
1785 state = "Off";
Richard Purdie2b97eab2006-10-06 18:32:18 +02001786 break;
1787 }
1788 count += sprintf(buf + count, "PM State: %s\n", state);
1789
1790 return count;
1791}
1792
1793static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL);
1794
1795int snd_soc_dapm_sys_add(struct device *dev)
1796{
Troy Kisky12ef1932008-10-13 17:42:14 -07001797 return device_create_file(dev, &dev_attr_dapm_widget);
Richard Purdie2b97eab2006-10-06 18:32:18 +02001798}
1799
1800static void snd_soc_dapm_sys_remove(struct device *dev)
1801{
Mark Brownaef90842009-05-16 17:53:16 +01001802 device_remove_file(dev, &dev_attr_dapm_widget);
Richard Purdie2b97eab2006-10-06 18:32:18 +02001803}
1804
1805/* free all dapm widgets and resources */
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001806static void dapm_free_widgets(struct snd_soc_dapm_context *dapm)
Richard Purdie2b97eab2006-10-06 18:32:18 +02001807{
1808 struct snd_soc_dapm_widget *w, *next_w;
1809 struct snd_soc_dapm_path *p, *next_p;
1810
Jarkko Nikula97c866d2010-12-14 12:18:31 +02001811 list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) {
1812 if (w->dapm != dapm)
1813 continue;
Richard Purdie2b97eab2006-10-06 18:32:18 +02001814 list_del(&w->list);
Jarkko Nikula8ddab3f2010-12-14 12:18:30 +02001815 /*
1816 * remove source and sink paths associated to this widget.
1817 * While removing the path, remove reference to it from both
1818 * source and sink widgets so that path is removed only once.
1819 */
1820 list_for_each_entry_safe(p, next_p, &w->sources, list_sink) {
1821 list_del(&p->list_sink);
1822 list_del(&p->list_source);
1823 list_del(&p->list);
1824 kfree(p->long_name);
1825 kfree(p);
1826 }
1827 list_for_each_entry_safe(p, next_p, &w->sinks, list_source) {
1828 list_del(&p->list_sink);
1829 list_del(&p->list_source);
1830 list_del(&p->list);
1831 kfree(p->long_name);
1832 kfree(p);
1833 }
Stephen Warrenfad59882011-04-28 17:37:59 -06001834 kfree(w->kcontrols);
Jarkko Nikulaead9b912010-11-13 20:40:44 +02001835 kfree(w->name);
Richard Purdie2b97eab2006-10-06 18:32:18 +02001836 kfree(w);
1837 }
Richard Purdie2b97eab2006-10-06 18:32:18 +02001838}
1839
Lars-Peter Clausen91a5fca2011-04-27 18:34:31 +02001840static struct snd_soc_dapm_widget *dapm_find_widget(
1841 struct snd_soc_dapm_context *dapm, const char *pin,
1842 bool search_other_contexts)
1843{
1844 struct snd_soc_dapm_widget *w;
1845 struct snd_soc_dapm_widget *fallback = NULL;
1846
1847 list_for_each_entry(w, &dapm->card->widgets, list) {
1848 if (!strcmp(w->name, pin)) {
1849 if (w->dapm == dapm)
1850 return w;
1851 else
1852 fallback = w;
1853 }
1854 }
1855
1856 if (search_other_contexts)
1857 return fallback;
1858
1859 return NULL;
1860}
1861
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001862static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm,
Mark Brown16499232009-01-07 18:25:13 +00001863 const char *pin, int status)
Liam Girdwooda5302182008-07-07 13:35:17 +01001864{
Lars-Peter Clausen91a5fca2011-04-27 18:34:31 +02001865 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
Liam Girdwooda5302182008-07-07 13:35:17 +01001866
Lars-Peter Clausen91a5fca2011-04-27 18:34:31 +02001867 if (!w) {
1868 dev_err(dapm->dev, "dapm: unknown pin %s\n", pin);
1869 return -EINVAL;
Liam Girdwooda5302182008-07-07 13:35:17 +01001870 }
1871
Lars-Peter Clausen91a5fca2011-04-27 18:34:31 +02001872 w->connected = status;
1873 if (status == 0)
1874 w->force = 0;
Mark Brown75c1f892011-10-04 22:28:08 +01001875 dapm_mark_dirty(w, "pin configuration");
Mark Brown0d867332011-04-06 11:38:14 +09001876
Lars-Peter Clausen91a5fca2011-04-27 18:34:31 +02001877 return 0;
Liam Girdwooda5302182008-07-07 13:35:17 +01001878}
1879
Richard Purdie2b97eab2006-10-06 18:32:18 +02001880/**
Liam Girdwooda5302182008-07-07 13:35:17 +01001881 * snd_soc_dapm_sync - scan and power dapm paths
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001882 * @dapm: DAPM context
Richard Purdie2b97eab2006-10-06 18:32:18 +02001883 *
1884 * Walks all dapm audio paths and powers widgets according to their
1885 * stream or path usage.
1886 *
1887 * Returns 0 for success.
1888 */
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001889int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm)
Richard Purdie2b97eab2006-10-06 18:32:18 +02001890{
Mark Brown4f4c0072011-10-07 14:29:19 +01001891 /*
1892 * Suppress early reports (eg, jacks syncing their state) to avoid
1893 * silly DAPM runs during card startup.
1894 */
1895 if (!dapm->card || !dapm->card->instantiated)
1896 return 0;
1897
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001898 return dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP);
Richard Purdie2b97eab2006-10-06 18:32:18 +02001899}
Liam Girdwooda5302182008-07-07 13:35:17 +01001900EXPORT_SYMBOL_GPL(snd_soc_dapm_sync);
Richard Purdie2b97eab2006-10-06 18:32:18 +02001901
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001902static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm,
Mark Brown215edda2009-09-08 18:59:05 +01001903 const struct snd_soc_dapm_route *route)
Richard Purdie2b97eab2006-10-06 18:32:18 +02001904{
1905 struct snd_soc_dapm_path *path;
1906 struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w;
Jarkko Nikula97c866d2010-12-14 12:18:31 +02001907 struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL;
Jarkko Nikulaead9b912010-11-13 20:40:44 +02001908 const char *sink;
Mark Brown215edda2009-09-08 18:59:05 +01001909 const char *control = route->control;
Jarkko Nikulaead9b912010-11-13 20:40:44 +02001910 const char *source;
1911 char prefixed_sink[80];
1912 char prefixed_source[80];
Richard Purdie2b97eab2006-10-06 18:32:18 +02001913 int ret = 0;
1914
Mark Brown88e8b9a2011-03-02 18:18:24 +00001915 if (dapm->codec && dapm->codec->name_prefix) {
Jarkko Nikulaead9b912010-11-13 20:40:44 +02001916 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
1917 dapm->codec->name_prefix, route->sink);
1918 sink = prefixed_sink;
1919 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
1920 dapm->codec->name_prefix, route->source);
1921 source = prefixed_source;
1922 } else {
1923 sink = route->sink;
1924 source = route->source;
1925 }
1926
Jarkko Nikula97c866d2010-12-14 12:18:31 +02001927 /*
1928 * find src and dest widgets over all widgets but favor a widget from
1929 * current DAPM context
1930 */
1931 list_for_each_entry(w, &dapm->card->widgets, list) {
Richard Purdie2b97eab2006-10-06 18:32:18 +02001932 if (!wsink && !(strcmp(w->name, sink))) {
Jarkko Nikula97c866d2010-12-14 12:18:31 +02001933 wtsink = w;
1934 if (w->dapm == dapm)
1935 wsink = w;
Richard Purdie2b97eab2006-10-06 18:32:18 +02001936 continue;
1937 }
1938 if (!wsource && !(strcmp(w->name, source))) {
Jarkko Nikula97c866d2010-12-14 12:18:31 +02001939 wtsource = w;
1940 if (w->dapm == dapm)
1941 wsource = w;
Richard Purdie2b97eab2006-10-06 18:32:18 +02001942 }
1943 }
Jarkko Nikula97c866d2010-12-14 12:18:31 +02001944 /* use widget from another DAPM context if not found from this */
1945 if (!wsink)
1946 wsink = wtsink;
1947 if (!wsource)
1948 wsource = wtsource;
Richard Purdie2b97eab2006-10-06 18:32:18 +02001949
1950 if (wsource == NULL || wsink == NULL)
1951 return -ENODEV;
1952
1953 path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL);
1954 if (!path)
1955 return -ENOMEM;
1956
1957 path->source = wsource;
1958 path->sink = wsink;
Mark Brown215edda2009-09-08 18:59:05 +01001959 path->connected = route->connected;
Richard Purdie2b97eab2006-10-06 18:32:18 +02001960 INIT_LIST_HEAD(&path->list);
1961 INIT_LIST_HEAD(&path->list_source);
1962 INIT_LIST_HEAD(&path->list_sink);
1963
1964 /* check for external widgets */
1965 if (wsink->id == snd_soc_dapm_input) {
1966 if (wsource->id == snd_soc_dapm_micbias ||
1967 wsource->id == snd_soc_dapm_mic ||
Rongrong Cao087d53a2009-07-10 20:13:30 +01001968 wsource->id == snd_soc_dapm_line ||
1969 wsource->id == snd_soc_dapm_output)
Richard Purdie2b97eab2006-10-06 18:32:18 +02001970 wsink->ext = 1;
1971 }
1972 if (wsource->id == snd_soc_dapm_output) {
1973 if (wsink->id == snd_soc_dapm_spk ||
1974 wsink->id == snd_soc_dapm_hp ||
Seth Forshee1e392212007-04-16 15:36:42 +02001975 wsink->id == snd_soc_dapm_line ||
1976 wsink->id == snd_soc_dapm_input)
Richard Purdie2b97eab2006-10-06 18:32:18 +02001977 wsource->ext = 1;
1978 }
1979
1980 /* connect static paths */
1981 if (control == NULL) {
Jarkko Nikula8ddab3f2010-12-14 12:18:30 +02001982 list_add(&path->list, &dapm->card->paths);
Richard Purdie2b97eab2006-10-06 18:32:18 +02001983 list_add(&path->list_sink, &wsink->sources);
1984 list_add(&path->list_source, &wsource->sinks);
1985 path->connect = 1;
1986 return 0;
1987 }
1988
1989 /* connect dynamic paths */
Lu Guanqundc2bea62011-04-20 16:00:36 +08001990 switch (wsink->id) {
Richard Purdie2b97eab2006-10-06 18:32:18 +02001991 case snd_soc_dapm_adc:
1992 case snd_soc_dapm_dac:
1993 case snd_soc_dapm_pga:
Olaya, Margaritad88429a2010-12-10 21:11:44 -06001994 case snd_soc_dapm_out_drv:
Richard Purdie2b97eab2006-10-06 18:32:18 +02001995 case snd_soc_dapm_input:
1996 case snd_soc_dapm_output:
Mark Brown1ab97c82011-11-27 16:21:51 +00001997 case snd_soc_dapm_siggen:
Richard Purdie2b97eab2006-10-06 18:32:18 +02001998 case snd_soc_dapm_micbias:
1999 case snd_soc_dapm_vmid:
2000 case snd_soc_dapm_pre:
2001 case snd_soc_dapm_post:
Mark Brown246d0a12009-04-22 18:24:55 +01002002 case snd_soc_dapm_supply:
Mark Brown010ff262009-08-17 17:39:22 +01002003 case snd_soc_dapm_aif_in:
2004 case snd_soc_dapm_aif_out:
Jarkko Nikula8ddab3f2010-12-14 12:18:30 +02002005 list_add(&path->list, &dapm->card->paths);
Richard Purdie2b97eab2006-10-06 18:32:18 +02002006 list_add(&path->list_sink, &wsink->sources);
2007 list_add(&path->list_source, &wsource->sinks);
2008 path->connect = 1;
2009 return 0;
2010 case snd_soc_dapm_mux:
Dimitris Papastamos24ff33a2010-12-16 15:53:39 +00002011 case snd_soc_dapm_virt_mux:
Peter Ujfalusi74155552009-01-08 13:34:29 +02002012 case snd_soc_dapm_value_mux:
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002013 ret = dapm_connect_mux(dapm, wsource, wsink, path, control,
Stephen Warren82cfecd2011-04-28 17:37:58 -06002014 &wsink->kcontrol_news[0]);
Richard Purdie2b97eab2006-10-06 18:32:18 +02002015 if (ret != 0)
2016 goto err;
2017 break;
2018 case snd_soc_dapm_switch:
2019 case snd_soc_dapm_mixer:
Ian Moltonca9c1aa2009-01-06 20:11:51 +00002020 case snd_soc_dapm_mixer_named_ctl:
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002021 ret = dapm_connect_mixer(dapm, wsource, wsink, path, control);
Richard Purdie2b97eab2006-10-06 18:32:18 +02002022 if (ret != 0)
2023 goto err;
2024 break;
2025 case snd_soc_dapm_hp:
2026 case snd_soc_dapm_mic:
2027 case snd_soc_dapm_line:
2028 case snd_soc_dapm_spk:
Jarkko Nikula8ddab3f2010-12-14 12:18:30 +02002029 list_add(&path->list, &dapm->card->paths);
Richard Purdie2b97eab2006-10-06 18:32:18 +02002030 list_add(&path->list_sink, &wsink->sources);
2031 list_add(&path->list_source, &wsource->sinks);
2032 path->connect = 0;
2033 return 0;
2034 }
2035 return 0;
2036
2037err:
Jarkko Nikulaf7d41ae2010-11-09 14:40:27 +02002038 dev_warn(dapm->dev, "asoc: no dapm match for %s --> %s --> %s\n",
2039 source, control, sink);
Richard Purdie2b97eab2006-10-06 18:32:18 +02002040 kfree(path);
2041 return ret;
2042}
Mark Brown105f1c22008-05-13 14:52:19 +02002043
2044/**
Mark Brown105f1c22008-05-13 14:52:19 +02002045 * snd_soc_dapm_add_routes - Add routes between DAPM widgets
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002046 * @dapm: DAPM context
Mark Brown105f1c22008-05-13 14:52:19 +02002047 * @route: audio routes
2048 * @num: number of routes
2049 *
2050 * Connects 2 dapm widgets together via a named audio path. The sink is
2051 * the widget receiving the audio signal, whilst the source is the sender
2052 * of the audio signal.
2053 *
2054 * Returns 0 for success else error. On error all resources can be freed
2055 * with a call to snd_soc_card_free().
2056 */
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002057int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm,
Mark Brown105f1c22008-05-13 14:52:19 +02002058 const struct snd_soc_dapm_route *route, int num)
2059{
2060 int i, ret;
2061
2062 for (i = 0; i < num; i++) {
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002063 ret = snd_soc_dapm_add_route(dapm, route);
Mark Brown105f1c22008-05-13 14:52:19 +02002064 if (ret < 0) {
Jarkko Nikulaf7d41ae2010-11-09 14:40:27 +02002065 dev_err(dapm->dev, "Failed to add route %s->%s\n",
2066 route->source, route->sink);
Mark Brown105f1c22008-05-13 14:52:19 +02002067 return ret;
2068 }
2069 route++;
2070 }
2071
2072 return 0;
2073}
2074EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes);
2075
Mark Brownbf3a9e12011-06-13 16:42:29 +01002076static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context *dapm,
2077 const struct snd_soc_dapm_route *route)
2078{
2079 struct snd_soc_dapm_widget *source = dapm_find_widget(dapm,
2080 route->source,
2081 true);
2082 struct snd_soc_dapm_widget *sink = dapm_find_widget(dapm,
2083 route->sink,
2084 true);
2085 struct snd_soc_dapm_path *path;
2086 int count = 0;
2087
2088 if (!source) {
2089 dev_err(dapm->dev, "Unable to find source %s for weak route\n",
2090 route->source);
2091 return -ENODEV;
2092 }
2093
2094 if (!sink) {
2095 dev_err(dapm->dev, "Unable to find sink %s for weak route\n",
2096 route->sink);
2097 return -ENODEV;
2098 }
2099
2100 if (route->control || route->connected)
2101 dev_warn(dapm->dev, "Ignoring control for weak route %s->%s\n",
2102 route->source, route->sink);
2103
2104 list_for_each_entry(path, &source->sinks, list_source) {
2105 if (path->sink == sink) {
2106 path->weak = 1;
2107 count++;
2108 }
2109 }
2110
2111 if (count == 0)
2112 dev_err(dapm->dev, "No path found for weak route %s->%s\n",
2113 route->source, route->sink);
2114 if (count > 1)
2115 dev_warn(dapm->dev, "%d paths found for weak route %s->%s\n",
2116 count, route->source, route->sink);
2117
2118 return 0;
2119}
2120
2121/**
2122 * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak
2123 * @dapm: DAPM context
2124 * @route: audio routes
2125 * @num: number of routes
2126 *
2127 * Mark existing routes matching those specified in the passed array
2128 * as being weak, meaning that they are ignored for the purpose of
2129 * power decisions. The main intended use case is for sidetone paths
2130 * which couple audio between other independent paths if they are both
2131 * active in order to make the combination work better at the user
2132 * level but which aren't intended to be "used".
2133 *
2134 * Note that CODEC drivers should not use this as sidetone type paths
2135 * can frequently also be used as bypass paths.
2136 */
2137int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context *dapm,
2138 const struct snd_soc_dapm_route *route, int num)
2139{
2140 int i, err;
2141 int ret = 0;
2142
2143 for (i = 0; i < num; i++) {
2144 err = snd_soc_dapm_weak_route(dapm, route);
2145 if (err)
2146 ret = err;
2147 route++;
2148 }
2149
2150 return ret;
2151}
2152EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes);
2153
Mark Brown105f1c22008-05-13 14:52:19 +02002154/**
Richard Purdie2b97eab2006-10-06 18:32:18 +02002155 * snd_soc_dapm_new_widgets - add new dapm widgets
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002156 * @dapm: DAPM context
Richard Purdie2b97eab2006-10-06 18:32:18 +02002157 *
2158 * Checks the codec for any new dapm widgets and creates them if found.
2159 *
2160 * Returns 0 for success.
2161 */
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002162int snd_soc_dapm_new_widgets(struct snd_soc_dapm_context *dapm)
Richard Purdie2b97eab2006-10-06 18:32:18 +02002163{
2164 struct snd_soc_dapm_widget *w;
Mark Brownb66a70d2011-02-09 18:04:11 +00002165 unsigned int val;
Richard Purdie2b97eab2006-10-06 18:32:18 +02002166
Jarkko Nikula97c866d2010-12-14 12:18:31 +02002167 list_for_each_entry(w, &dapm->card->widgets, list)
Richard Purdie2b97eab2006-10-06 18:32:18 +02002168 {
2169 if (w->new)
2170 continue;
2171
Stephen Warrenfad59882011-04-28 17:37:59 -06002172 if (w->num_kcontrols) {
2173 w->kcontrols = kzalloc(w->num_kcontrols *
2174 sizeof(struct snd_kcontrol *),
2175 GFP_KERNEL);
2176 if (!w->kcontrols)
2177 return -ENOMEM;
2178 }
2179
Richard Purdie2b97eab2006-10-06 18:32:18 +02002180 switch(w->id) {
2181 case snd_soc_dapm_switch:
2182 case snd_soc_dapm_mixer:
Ian Moltonca9c1aa2009-01-06 20:11:51 +00002183 case snd_soc_dapm_mixer_named_ctl:
Lars-Peter Clausen4b80b8c2011-06-09 13:22:36 +02002184 dapm_new_mixer(w);
Richard Purdie2b97eab2006-10-06 18:32:18 +02002185 break;
2186 case snd_soc_dapm_mux:
Dimitris Papastamos24ff33a2010-12-16 15:53:39 +00002187 case snd_soc_dapm_virt_mux:
Peter Ujfalusi2e72f8e2009-01-05 09:54:57 +02002188 case snd_soc_dapm_value_mux:
Lars-Peter Clausen4b80b8c2011-06-09 13:22:36 +02002189 dapm_new_mux(w);
Richard Purdie2b97eab2006-10-06 18:32:18 +02002190 break;
Richard Purdie2b97eab2006-10-06 18:32:18 +02002191 case snd_soc_dapm_pga:
Olaya, Margaritad88429a2010-12-10 21:11:44 -06002192 case snd_soc_dapm_out_drv:
Lars-Peter Clausen4b80b8c2011-06-09 13:22:36 +02002193 dapm_new_pga(w);
Richard Purdie2b97eab2006-10-06 18:32:18 +02002194 break;
Mark Brown7ca3a182011-10-08 14:04:50 +01002195 default:
Richard Purdie2b97eab2006-10-06 18:32:18 +02002196 break;
2197 }
Mark Brownb66a70d2011-02-09 18:04:11 +00002198
2199 /* Read the initial power state from the device */
2200 if (w->reg >= 0) {
Liam Girdwood0445bdf2011-06-13 19:37:36 +01002201 val = soc_widget_read(w, w->reg);
Mark Brownb66a70d2011-02-09 18:04:11 +00002202 val &= 1 << w->shift;
2203 if (w->invert)
2204 val = !val;
2205
2206 if (val)
2207 w->power = 1;
2208 }
2209
Richard Purdie2b97eab2006-10-06 18:32:18 +02002210 w->new = 1;
Lars-Peter Clausend5d1e0b2011-04-30 19:45:49 +02002211
Mark Brown7508b122011-10-05 12:09:12 +01002212 dapm_mark_dirty(w, "new widget");
Lars-Peter Clausend5d1e0b2011-04-30 19:45:49 +02002213 dapm_debugfs_add_widget(w);
Richard Purdie2b97eab2006-10-06 18:32:18 +02002214 }
2215
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002216 dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP);
Richard Purdie2b97eab2006-10-06 18:32:18 +02002217 return 0;
2218}
2219EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets);
2220
2221/**
2222 * snd_soc_dapm_get_volsw - dapm mixer get callback
2223 * @kcontrol: mixer control
Mark Brownac11a2b2009-01-01 12:18:17 +00002224 * @ucontrol: control element information
Richard Purdie2b97eab2006-10-06 18:32:18 +02002225 *
2226 * Callback to get the value of a dapm mixer control.
2227 *
2228 * Returns 0 for success.
2229 */
2230int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol,
2231 struct snd_ctl_elem_value *ucontrol)
2232{
Stephen Warrenfafd2172011-04-28 17:38:00 -06002233 struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
2234 struct snd_soc_dapm_widget *widget = wlist->widgets[0];
Jon Smirl4eaa9812008-07-29 11:42:26 +01002235 struct soc_mixer_control *mc =
2236 (struct soc_mixer_control *)kcontrol->private_value;
Jon Smirl815ecf8d2008-07-29 10:22:24 -04002237 unsigned int reg = mc->reg;
2238 unsigned int shift = mc->shift;
2239 unsigned int rshift = mc->rshift;
Jon Smirl4eaa9812008-07-29 11:42:26 +01002240 int max = mc->max;
Jon Smirl815ecf8d2008-07-29 10:22:24 -04002241 unsigned int invert = mc->invert;
2242 unsigned int mask = (1 << fls(max)) - 1;
Richard Purdie2b97eab2006-10-06 18:32:18 +02002243
Richard Purdie2b97eab2006-10-06 18:32:18 +02002244 ucontrol->value.integer.value[0] =
2245 (snd_soc_read(widget->codec, reg) >> shift) & mask;
2246 if (shift != rshift)
2247 ucontrol->value.integer.value[1] =
2248 (snd_soc_read(widget->codec, reg) >> rshift) & mask;
2249 if (invert) {
2250 ucontrol->value.integer.value[0] =
Philipp Zabela7a4ac82008-01-10 14:37:42 +01002251 max - ucontrol->value.integer.value[0];
Richard Purdie2b97eab2006-10-06 18:32:18 +02002252 if (shift != rshift)
2253 ucontrol->value.integer.value[1] =
Philipp Zabela7a4ac82008-01-10 14:37:42 +01002254 max - ucontrol->value.integer.value[1];
Richard Purdie2b97eab2006-10-06 18:32:18 +02002255 }
2256
2257 return 0;
2258}
2259EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw);
2260
2261/**
2262 * snd_soc_dapm_put_volsw - dapm mixer set callback
2263 * @kcontrol: mixer control
Mark Brownac11a2b2009-01-01 12:18:17 +00002264 * @ucontrol: control element information
Richard Purdie2b97eab2006-10-06 18:32:18 +02002265 *
2266 * Callback to set the value of a dapm mixer control.
2267 *
2268 * Returns 0 for success.
2269 */
2270int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol,
2271 struct snd_ctl_elem_value *ucontrol)
2272{
Stephen Warrenfafd2172011-04-28 17:38:00 -06002273 struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
2274 struct snd_soc_dapm_widget *widget = wlist->widgets[0];
2275 struct snd_soc_codec *codec = widget->codec;
Jon Smirl4eaa9812008-07-29 11:42:26 +01002276 struct soc_mixer_control *mc =
2277 (struct soc_mixer_control *)kcontrol->private_value;
Jon Smirl815ecf8d2008-07-29 10:22:24 -04002278 unsigned int reg = mc->reg;
2279 unsigned int shift = mc->shift;
Jon Smirl4eaa9812008-07-29 11:42:26 +01002280 int max = mc->max;
Jon Smirl815ecf8d2008-07-29 10:22:24 -04002281 unsigned int mask = (1 << fls(max)) - 1;
2282 unsigned int invert = mc->invert;
Stephen Warrene9cf7042011-01-27 14:54:05 -07002283 unsigned int val;
Mark Brown97404f22010-12-14 16:13:57 +00002284 int connect, change;
2285 struct snd_soc_dapm_update update;
Stephen Warrenfafd2172011-04-28 17:38:00 -06002286 int wi;
Richard Purdie2b97eab2006-10-06 18:32:18 +02002287
2288 val = (ucontrol->value.integer.value[0] & mask);
2289
2290 if (invert)
Philipp Zabela7a4ac82008-01-10 14:37:42 +01002291 val = max - val;
Stephen Warrene9cf7042011-01-27 14:54:05 -07002292 mask = mask << shift;
Richard Purdie2b97eab2006-10-06 18:32:18 +02002293 val = val << shift;
Richard Purdie2b97eab2006-10-06 18:32:18 +02002294
Stephen Warrenfafd2172011-04-28 17:38:00 -06002295 if (val)
2296 /* new connection */
2297 connect = invert ? 0 : 1;
2298 else
2299 /* old connection must be powered down */
2300 connect = invert ? 1 : 0;
2301
2302 mutex_lock(&codec->mutex);
Richard Purdie2b97eab2006-10-06 18:32:18 +02002303
Stephen Warrene9cf7042011-01-27 14:54:05 -07002304 change = snd_soc_test_bits(widget->codec, reg, mask, val);
Mark Brown97404f22010-12-14 16:13:57 +00002305 if (change) {
Stephen Warrenfafd2172011-04-28 17:38:00 -06002306 for (wi = 0; wi < wlist->num_widgets; wi++) {
2307 widget = wlist->widgets[wi];
Mark Brown283375c2009-12-07 18:09:03 +00002308
Stephen Warrenfafd2172011-04-28 17:38:00 -06002309 widget->value = val;
Mark Brown97404f22010-12-14 16:13:57 +00002310
Stephen Warrenfafd2172011-04-28 17:38:00 -06002311 update.kcontrol = kcontrol;
2312 update.widget = widget;
2313 update.reg = reg;
2314 update.mask = mask;
2315 update.val = val;
2316 widget->dapm->update = &update;
Mark Brown97404f22010-12-14 16:13:57 +00002317
Stephen Warrenfafd2172011-04-28 17:38:00 -06002318 dapm_mixer_update_power(widget, kcontrol, connect);
2319
2320 widget->dapm->update = NULL;
2321 }
Mark Brown283375c2009-12-07 18:09:03 +00002322 }
2323
Stephen Warrenfafd2172011-04-28 17:38:00 -06002324 mutex_unlock(&codec->mutex);
Mark Brown97404f22010-12-14 16:13:57 +00002325 return 0;
Richard Purdie2b97eab2006-10-06 18:32:18 +02002326}
2327EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw);
2328
2329/**
2330 * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback
2331 * @kcontrol: mixer control
Mark Brownac11a2b2009-01-01 12:18:17 +00002332 * @ucontrol: control element information
Richard Purdie2b97eab2006-10-06 18:32:18 +02002333 *
2334 * Callback to get the value of a dapm enumerated double mixer control.
2335 *
2336 * Returns 0 for success.
2337 */
2338int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol,
2339 struct snd_ctl_elem_value *ucontrol)
2340{
Stephen Warrenfafd2172011-04-28 17:38:00 -06002341 struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
2342 struct snd_soc_dapm_widget *widget = wlist->widgets[0];
Richard Purdie2b97eab2006-10-06 18:32:18 +02002343 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
Daniel Ribeiro46f58222009-06-07 02:49:11 -03002344 unsigned int val, bitmask;
Richard Purdie2b97eab2006-10-06 18:32:18 +02002345
Jon Smirlf8ba0b72008-07-29 11:42:27 +01002346 for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
Richard Purdie2b97eab2006-10-06 18:32:18 +02002347 ;
2348 val = snd_soc_read(widget->codec, e->reg);
2349 ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1);
2350 if (e->shift_l != e->shift_r)
2351 ucontrol->value.enumerated.item[1] =
2352 (val >> e->shift_r) & (bitmask - 1);
2353
2354 return 0;
2355}
2356EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double);
2357
2358/**
2359 * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback
2360 * @kcontrol: mixer control
Mark Brownac11a2b2009-01-01 12:18:17 +00002361 * @ucontrol: control element information
Richard Purdie2b97eab2006-10-06 18:32:18 +02002362 *
2363 * Callback to set the value of a dapm enumerated double mixer control.
2364 *
2365 * Returns 0 for success.
2366 */
2367int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol,
2368 struct snd_ctl_elem_value *ucontrol)
2369{
Stephen Warrenfafd2172011-04-28 17:38:00 -06002370 struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
2371 struct snd_soc_dapm_widget *widget = wlist->widgets[0];
2372 struct snd_soc_codec *codec = widget->codec;
Richard Purdie2b97eab2006-10-06 18:32:18 +02002373 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
Mark Brown3a655772009-10-05 17:23:30 +01002374 unsigned int val, mux, change;
Daniel Ribeiro46f58222009-06-07 02:49:11 -03002375 unsigned int mask, bitmask;
Mark Brown97404f22010-12-14 16:13:57 +00002376 struct snd_soc_dapm_update update;
Stephen Warrenfafd2172011-04-28 17:38:00 -06002377 int wi;
Richard Purdie2b97eab2006-10-06 18:32:18 +02002378
Jon Smirlf8ba0b72008-07-29 11:42:27 +01002379 for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
Richard Purdie2b97eab2006-10-06 18:32:18 +02002380 ;
Jon Smirlf8ba0b72008-07-29 11:42:27 +01002381 if (ucontrol->value.enumerated.item[0] > e->max - 1)
Richard Purdie2b97eab2006-10-06 18:32:18 +02002382 return -EINVAL;
2383 mux = ucontrol->value.enumerated.item[0];
2384 val = mux << e->shift_l;
2385 mask = (bitmask - 1) << e->shift_l;
2386 if (e->shift_l != e->shift_r) {
Jon Smirlf8ba0b72008-07-29 11:42:27 +01002387 if (ucontrol->value.enumerated.item[1] > e->max - 1)
Richard Purdie2b97eab2006-10-06 18:32:18 +02002388 return -EINVAL;
2389 val |= ucontrol->value.enumerated.item[1] << e->shift_r;
2390 mask |= (bitmask - 1) << e->shift_r;
2391 }
2392
Stephen Warrenfafd2172011-04-28 17:38:00 -06002393 mutex_lock(&codec->mutex);
2394
Mark Brown3a655772009-10-05 17:23:30 +01002395 change = snd_soc_test_bits(widget->codec, e->reg, mask, val);
Stephen Warrenfafd2172011-04-28 17:38:00 -06002396 if (change) {
2397 for (wi = 0; wi < wlist->num_widgets; wi++) {
2398 widget = wlist->widgets[wi];
Mark Brown97404f22010-12-14 16:13:57 +00002399
Stephen Warrenfafd2172011-04-28 17:38:00 -06002400 widget->value = val;
Mark Brown97404f22010-12-14 16:13:57 +00002401
Stephen Warrenfafd2172011-04-28 17:38:00 -06002402 update.kcontrol = kcontrol;
2403 update.widget = widget;
2404 update.reg = e->reg;
2405 update.mask = mask;
2406 update.val = val;
2407 widget->dapm->update = &update;
Mark Brown1642e3d2009-10-05 16:24:26 +01002408
Stephen Warrenfafd2172011-04-28 17:38:00 -06002409 dapm_mux_update_power(widget, kcontrol, change, mux, e);
Mark Brown1642e3d2009-10-05 16:24:26 +01002410
Stephen Warrenfafd2172011-04-28 17:38:00 -06002411 widget->dapm->update = NULL;
2412 }
2413 }
2414
2415 mutex_unlock(&codec->mutex);
Mark Brown97404f22010-12-14 16:13:57 +00002416 return change;
Richard Purdie2b97eab2006-10-06 18:32:18 +02002417}
2418EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double);
2419
2420/**
Mark Brownd2b247a2009-10-06 15:21:04 +01002421 * snd_soc_dapm_get_enum_virt - Get virtual DAPM mux
2422 * @kcontrol: mixer control
2423 * @ucontrol: control element information
2424 *
2425 * Returns 0 for success.
2426 */
2427int snd_soc_dapm_get_enum_virt(struct snd_kcontrol *kcontrol,
2428 struct snd_ctl_elem_value *ucontrol)
2429{
Stephen Warrenfafd2172011-04-28 17:38:00 -06002430 struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
2431 struct snd_soc_dapm_widget *widget = wlist->widgets[0];
Mark Brownd2b247a2009-10-06 15:21:04 +01002432
2433 ucontrol->value.enumerated.item[0] = widget->value;
2434
2435 return 0;
2436}
2437EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_virt);
2438
2439/**
2440 * snd_soc_dapm_put_enum_virt - Set virtual DAPM mux
2441 * @kcontrol: mixer control
2442 * @ucontrol: control element information
2443 *
2444 * Returns 0 for success.
2445 */
2446int snd_soc_dapm_put_enum_virt(struct snd_kcontrol *kcontrol,
2447 struct snd_ctl_elem_value *ucontrol)
2448{
Stephen Warrenfafd2172011-04-28 17:38:00 -06002449 struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
2450 struct snd_soc_dapm_widget *widget = wlist->widgets[0];
2451 struct snd_soc_codec *codec = widget->codec;
Mark Brownd2b247a2009-10-06 15:21:04 +01002452 struct soc_enum *e =
2453 (struct soc_enum *)kcontrol->private_value;
2454 int change;
2455 int ret = 0;
Stephen Warrenfafd2172011-04-28 17:38:00 -06002456 int wi;
Mark Brownd2b247a2009-10-06 15:21:04 +01002457
2458 if (ucontrol->value.enumerated.item[0] >= e->max)
2459 return -EINVAL;
2460
Stephen Warrenfafd2172011-04-28 17:38:00 -06002461 mutex_lock(&codec->mutex);
Mark Brownd2b247a2009-10-06 15:21:04 +01002462
2463 change = widget->value != ucontrol->value.enumerated.item[0];
Stephen Warrenfafd2172011-04-28 17:38:00 -06002464 if (change) {
2465 for (wi = 0; wi < wlist->num_widgets; wi++) {
2466 widget = wlist->widgets[wi];
Mark Brownd2b247a2009-10-06 15:21:04 +01002467
Stephen Warrenfafd2172011-04-28 17:38:00 -06002468 widget->value = ucontrol->value.enumerated.item[0];
2469
2470 dapm_mux_update_power(widget, kcontrol, change,
2471 widget->value, e);
2472 }
2473 }
2474
2475 mutex_unlock(&codec->mutex);
Mark Brownd2b247a2009-10-06 15:21:04 +01002476 return ret;
2477}
2478EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt);
2479
2480/**
Peter Ujfalusi2e72f8e2009-01-05 09:54:57 +02002481 * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get
2482 * callback
2483 * @kcontrol: mixer control
2484 * @ucontrol: control element information
2485 *
2486 * Callback to get the value of a dapm semi enumerated double mixer control.
2487 *
2488 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2489 * used for handling bitfield coded enumeration for example.
2490 *
2491 * Returns 0 for success.
2492 */
2493int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol *kcontrol,
2494 struct snd_ctl_elem_value *ucontrol)
2495{
Stephen Warrenfafd2172011-04-28 17:38:00 -06002496 struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
2497 struct snd_soc_dapm_widget *widget = wlist->widgets[0];
Peter Ujfalusi74155552009-01-08 13:34:29 +02002498 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
Daniel Ribeiro46f58222009-06-07 02:49:11 -03002499 unsigned int reg_val, val, mux;
Peter Ujfalusi2e72f8e2009-01-05 09:54:57 +02002500
2501 reg_val = snd_soc_read(widget->codec, e->reg);
2502 val = (reg_val >> e->shift_l) & e->mask;
2503 for (mux = 0; mux < e->max; mux++) {
2504 if (val == e->values[mux])
2505 break;
2506 }
2507 ucontrol->value.enumerated.item[0] = mux;
2508 if (e->shift_l != e->shift_r) {
2509 val = (reg_val >> e->shift_r) & e->mask;
2510 for (mux = 0; mux < e->max; mux++) {
2511 if (val == e->values[mux])
2512 break;
2513 }
2514 ucontrol->value.enumerated.item[1] = mux;
2515 }
2516
2517 return 0;
2518}
2519EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double);
2520
2521/**
2522 * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set
2523 * callback
2524 * @kcontrol: mixer control
2525 * @ucontrol: control element information
2526 *
2527 * Callback to set the value of a dapm semi enumerated double mixer control.
2528 *
2529 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2530 * used for handling bitfield coded enumeration for example.
2531 *
2532 * Returns 0 for success.
2533 */
2534int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol,
2535 struct snd_ctl_elem_value *ucontrol)
2536{
Stephen Warrenfafd2172011-04-28 17:38:00 -06002537 struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
2538 struct snd_soc_dapm_widget *widget = wlist->widgets[0];
2539 struct snd_soc_codec *codec = widget->codec;
Peter Ujfalusi74155552009-01-08 13:34:29 +02002540 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
Mark Brown3a655772009-10-05 17:23:30 +01002541 unsigned int val, mux, change;
Daniel Ribeiro46f58222009-06-07 02:49:11 -03002542 unsigned int mask;
Mark Brown97404f22010-12-14 16:13:57 +00002543 struct snd_soc_dapm_update update;
Stephen Warrenfafd2172011-04-28 17:38:00 -06002544 int wi;
Peter Ujfalusi2e72f8e2009-01-05 09:54:57 +02002545
2546 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2547 return -EINVAL;
2548 mux = ucontrol->value.enumerated.item[0];
2549 val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l;
2550 mask = e->mask << e->shift_l;
2551 if (e->shift_l != e->shift_r) {
2552 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2553 return -EINVAL;
2554 val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r;
2555 mask |= e->mask << e->shift_r;
2556 }
2557
Stephen Warrenfafd2172011-04-28 17:38:00 -06002558 mutex_lock(&codec->mutex);
2559
Mark Brown3a655772009-10-05 17:23:30 +01002560 change = snd_soc_test_bits(widget->codec, e->reg, mask, val);
Stephen Warrenfafd2172011-04-28 17:38:00 -06002561 if (change) {
2562 for (wi = 0; wi < wlist->num_widgets; wi++) {
2563 widget = wlist->widgets[wi];
Mark Brown97404f22010-12-14 16:13:57 +00002564
Stephen Warrenfafd2172011-04-28 17:38:00 -06002565 widget->value = val;
Mark Brown97404f22010-12-14 16:13:57 +00002566
Stephen Warrenfafd2172011-04-28 17:38:00 -06002567 update.kcontrol = kcontrol;
2568 update.widget = widget;
2569 update.reg = e->reg;
2570 update.mask = mask;
2571 update.val = val;
2572 widget->dapm->update = &update;
Mark Brown1642e3d2009-10-05 16:24:26 +01002573
Stephen Warrenfafd2172011-04-28 17:38:00 -06002574 dapm_mux_update_power(widget, kcontrol, change, mux, e);
Mark Brown1642e3d2009-10-05 16:24:26 +01002575
Stephen Warrenfafd2172011-04-28 17:38:00 -06002576 widget->dapm->update = NULL;
2577 }
2578 }
2579
2580 mutex_unlock(&codec->mutex);
Mark Brown97404f22010-12-14 16:13:57 +00002581 return change;
Peter Ujfalusi2e72f8e2009-01-05 09:54:57 +02002582}
2583EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double);
2584
2585/**
Mark Brown8b37dbd2009-02-28 21:14:20 +00002586 * snd_soc_dapm_info_pin_switch - Info for a pin switch
2587 *
2588 * @kcontrol: mixer control
2589 * @uinfo: control element information
2590 *
2591 * Callback to provide information about a pin switch control.
2592 */
2593int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol,
2594 struct snd_ctl_elem_info *uinfo)
2595{
2596 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2597 uinfo->count = 1;
2598 uinfo->value.integer.min = 0;
2599 uinfo->value.integer.max = 1;
2600
2601 return 0;
2602}
2603EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch);
2604
2605/**
2606 * snd_soc_dapm_get_pin_switch - Get information for a pin switch
2607 *
2608 * @kcontrol: mixer control
2609 * @ucontrol: Value
2610 */
2611int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol,
2612 struct snd_ctl_elem_value *ucontrol)
2613{
2614 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2615 const char *pin = (const char *)kcontrol->private_value;
2616
2617 mutex_lock(&codec->mutex);
2618
2619 ucontrol->value.integer.value[0] =
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002620 snd_soc_dapm_get_pin_status(&codec->dapm, pin);
Mark Brown8b37dbd2009-02-28 21:14:20 +00002621
2622 mutex_unlock(&codec->mutex);
2623
2624 return 0;
2625}
2626EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch);
2627
2628/**
2629 * snd_soc_dapm_put_pin_switch - Set information for a pin switch
2630 *
2631 * @kcontrol: mixer control
2632 * @ucontrol: Value
2633 */
2634int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol,
2635 struct snd_ctl_elem_value *ucontrol)
2636{
2637 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2638 const char *pin = (const char *)kcontrol->private_value;
2639
2640 mutex_lock(&codec->mutex);
2641
2642 if (ucontrol->value.integer.value[0])
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002643 snd_soc_dapm_enable_pin(&codec->dapm, pin);
Mark Brown8b37dbd2009-02-28 21:14:20 +00002644 else
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002645 snd_soc_dapm_disable_pin(&codec->dapm, pin);
Mark Brown8b37dbd2009-02-28 21:14:20 +00002646
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002647 snd_soc_dapm_sync(&codec->dapm);
Mark Brown8b37dbd2009-02-28 21:14:20 +00002648
2649 mutex_unlock(&codec->mutex);
2650
2651 return 0;
2652}
2653EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch);
2654
2655/**
Richard Purdie2b97eab2006-10-06 18:32:18 +02002656 * snd_soc_dapm_new_control - create new dapm control
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002657 * @dapm: DAPM context
Richard Purdie2b97eab2006-10-06 18:32:18 +02002658 * @widget: widget template
2659 *
2660 * Creates a new dapm control based upon the template.
2661 *
2662 * Returns 0 for success else error.
2663 */
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002664int snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
Richard Purdie2b97eab2006-10-06 18:32:18 +02002665 const struct snd_soc_dapm_widget *widget)
2666{
2667 struct snd_soc_dapm_widget *w;
Jarkko Nikulaead9b912010-11-13 20:40:44 +02002668 size_t name_len;
Richard Purdie2b97eab2006-10-06 18:32:18 +02002669
2670 if ((w = dapm_cnew_widget(widget)) == NULL)
2671 return -ENOMEM;
2672
Jarkko Nikulaead9b912010-11-13 20:40:44 +02002673 name_len = strlen(widget->name) + 1;
Mark Brown88e8b9a2011-03-02 18:18:24 +00002674 if (dapm->codec && dapm->codec->name_prefix)
Jarkko Nikulaead9b912010-11-13 20:40:44 +02002675 name_len += 1 + strlen(dapm->codec->name_prefix);
2676 w->name = kmalloc(name_len, GFP_KERNEL);
2677 if (w->name == NULL) {
2678 kfree(w);
2679 return -ENOMEM;
2680 }
Mark Brown88e8b9a2011-03-02 18:18:24 +00002681 if (dapm->codec && dapm->codec->name_prefix)
Jarkko Nikulaead9b912010-11-13 20:40:44 +02002682 snprintf(w->name, name_len, "%s %s",
2683 dapm->codec->name_prefix, widget->name);
2684 else
2685 snprintf(w->name, name_len, "%s", widget->name);
2686
Mark Brown7ca3a182011-10-08 14:04:50 +01002687 switch (w->id) {
2688 case snd_soc_dapm_switch:
2689 case snd_soc_dapm_mixer:
2690 case snd_soc_dapm_mixer_named_ctl:
2691 w->power_check = dapm_generic_check_power;
2692 break;
2693 case snd_soc_dapm_mux:
2694 case snd_soc_dapm_virt_mux:
2695 case snd_soc_dapm_value_mux:
2696 w->power_check = dapm_generic_check_power;
2697 break;
2698 case snd_soc_dapm_adc:
2699 case snd_soc_dapm_aif_out:
2700 w->power_check = dapm_adc_check_power;
2701 break;
2702 case snd_soc_dapm_dac:
2703 case snd_soc_dapm_aif_in:
2704 w->power_check = dapm_dac_check_power;
2705 break;
2706 case snd_soc_dapm_pga:
2707 case snd_soc_dapm_out_drv:
2708 case snd_soc_dapm_input:
2709 case snd_soc_dapm_output:
2710 case snd_soc_dapm_micbias:
2711 case snd_soc_dapm_spk:
2712 case snd_soc_dapm_hp:
2713 case snd_soc_dapm_mic:
2714 case snd_soc_dapm_line:
2715 w->power_check = dapm_generic_check_power;
2716 break;
2717 case snd_soc_dapm_supply:
2718 w->power_check = dapm_supply_check_power;
2719 break;
2720 default:
2721 w->power_check = dapm_always_on_check_power;
2722 break;
2723 }
2724
Jarkko Nikula97c866d2010-12-14 12:18:31 +02002725 dapm->n_widgets++;
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002726 w->dapm = dapm;
2727 w->codec = dapm->codec;
Liam Girdwoodb7950642011-07-04 22:10:52 +01002728 w->platform = dapm->platform;
Richard Purdie2b97eab2006-10-06 18:32:18 +02002729 INIT_LIST_HEAD(&w->sources);
2730 INIT_LIST_HEAD(&w->sinks);
2731 INIT_LIST_HEAD(&w->list);
Mark Browndb432b42011-10-03 21:06:40 +01002732 INIT_LIST_HEAD(&w->dirty);
Jarkko Nikula97c866d2010-12-14 12:18:31 +02002733 list_add(&w->list, &dapm->card->widgets);
Richard Purdie2b97eab2006-10-06 18:32:18 +02002734
2735 /* machine layer set ups unconnected pins and insertions */
2736 w->connected = 1;
2737 return 0;
2738}
2739EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control);
2740
2741/**
Mark Brown4ba13272008-05-13 14:51:19 +02002742 * snd_soc_dapm_new_controls - create new dapm controls
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002743 * @dapm: DAPM context
Mark Brown4ba13272008-05-13 14:51:19 +02002744 * @widget: widget array
2745 * @num: number of widgets
2746 *
2747 * Creates new DAPM controls based upon the templates.
2748 *
2749 * Returns 0 for success else error.
2750 */
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002751int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm,
Mark Brown4ba13272008-05-13 14:51:19 +02002752 const struct snd_soc_dapm_widget *widget,
2753 int num)
2754{
2755 int i, ret;
2756
2757 for (i = 0; i < num; i++) {
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002758 ret = snd_soc_dapm_new_control(dapm, widget);
Mark Brownb8b33cb2008-12-18 11:19:30 +00002759 if (ret < 0) {
Jarkko Nikulaf7d41ae2010-11-09 14:40:27 +02002760 dev_err(dapm->dev,
2761 "ASoC: Failed to create DAPM control %s: %d\n",
2762 widget->name, ret);
Mark Brown4ba13272008-05-13 14:51:19 +02002763 return ret;
Mark Brownb8b33cb2008-12-18 11:19:30 +00002764 }
Mark Brown4ba13272008-05-13 14:51:19 +02002765 widget++;
2766 }
2767 return 0;
2768}
2769EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls);
2770
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002771static void soc_dapm_stream_event(struct snd_soc_dapm_context *dapm,
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +00002772 const char *stream, int event)
Richard Purdie2b97eab2006-10-06 18:32:18 +02002773{
2774 struct snd_soc_dapm_widget *w;
2775
Jarkko Nikula97c866d2010-12-14 12:18:31 +02002776 list_for_each_entry(w, &dapm->card->widgets, list)
Richard Purdie2b97eab2006-10-06 18:32:18 +02002777 {
Jarkko Nikula97c866d2010-12-14 12:18:31 +02002778 if (!w->sname || w->dapm != dapm)
Richard Purdie2b97eab2006-10-06 18:32:18 +02002779 continue;
Liam Girdwoodee47b362011-07-25 11:15:50 +01002780 dev_vdbg(w->dapm->dev, "widget %s\n %s stream %s event %d\n",
Jarkko Nikulaf7d41ae2010-11-09 14:40:27 +02002781 w->name, w->sname, stream, event);
Richard Purdie2b97eab2006-10-06 18:32:18 +02002782 if (strstr(w->sname, stream)) {
Mark Brown75c1f892011-10-04 22:28:08 +01002783 dapm_mark_dirty(w, "stream event");
Richard Purdie2b97eab2006-10-06 18:32:18 +02002784 switch(event) {
2785 case SND_SOC_DAPM_STREAM_START:
2786 w->active = 1;
2787 break;
2788 case SND_SOC_DAPM_STREAM_STOP:
2789 w->active = 0;
2790 break;
2791 case SND_SOC_DAPM_STREAM_SUSPEND:
Richard Purdie2b97eab2006-10-06 18:32:18 +02002792 case SND_SOC_DAPM_STREAM_RESUME:
Richard Purdie2b97eab2006-10-06 18:32:18 +02002793 case SND_SOC_DAPM_STREAM_PAUSE_PUSH:
Richard Purdie2b97eab2006-10-06 18:32:18 +02002794 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE:
2795 break;
2796 }
2797 }
2798 }
Richard Purdie2b97eab2006-10-06 18:32:18 +02002799
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002800 dapm_power_widgets(dapm, event);
Liam Girdwood64a648c2011-07-25 11:15:15 +01002801
2802 /* do we need to notify any clients that DAPM stream is complete */
2803 if (dapm->stream_event)
2804 dapm->stream_event(dapm, event);
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002805}
2806
2807/**
2808 * snd_soc_dapm_stream_event - send a stream event to the dapm core
2809 * @rtd: PCM runtime data
2810 * @stream: stream name
2811 * @event: stream event
2812 *
2813 * Sends a stream event to the dapm core. The core then makes any
2814 * necessary widget power changes.
2815 *
2816 * Returns 0 for success else error.
2817 */
2818int snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd,
2819 const char *stream, int event)
2820{
2821 struct snd_soc_codec *codec = rtd->codec;
2822
2823 if (stream == NULL)
2824 return 0;
2825
2826 mutex_lock(&codec->mutex);
2827 soc_dapm_stream_event(&codec->dapm, stream, event);
Eero Nurkkala8e8b2d62009-10-12 08:41:59 +03002828 mutex_unlock(&codec->mutex);
Richard Purdie2b97eab2006-10-06 18:32:18 +02002829 return 0;
2830}
Richard Purdie2b97eab2006-10-06 18:32:18 +02002831
2832/**
Liam Girdwooda5302182008-07-07 13:35:17 +01002833 * snd_soc_dapm_enable_pin - enable pin.
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002834 * @dapm: DAPM context
Liam Girdwooda5302182008-07-07 13:35:17 +01002835 * @pin: pin name
Richard Purdie2b97eab2006-10-06 18:32:18 +02002836 *
Mark Brown74b8f952009-06-06 11:26:15 +01002837 * Enables input/output pin and its parents or children widgets iff there is
Liam Girdwooda5302182008-07-07 13:35:17 +01002838 * a valid audio route and active audio stream.
2839 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
2840 * do any widget power switching.
Richard Purdie2b97eab2006-10-06 18:32:18 +02002841 */
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002842int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin)
Richard Purdie2b97eab2006-10-06 18:32:18 +02002843{
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002844 return snd_soc_dapm_set_pin(dapm, pin, 1);
Richard Purdie2b97eab2006-10-06 18:32:18 +02002845}
Liam Girdwooda5302182008-07-07 13:35:17 +01002846EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin);
Richard Purdie2b97eab2006-10-06 18:32:18 +02002847
2848/**
Mark Brownda341832010-03-15 19:23:37 +00002849 * snd_soc_dapm_force_enable_pin - force a pin to be enabled
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002850 * @dapm: DAPM context
Mark Brownda341832010-03-15 19:23:37 +00002851 * @pin: pin name
2852 *
2853 * Enables input/output pin regardless of any other state. This is
2854 * intended for use with microphone bias supplies used in microphone
2855 * jack detection.
2856 *
2857 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
2858 * do any widget power switching.
2859 */
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002860int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm,
2861 const char *pin)
Mark Brownda341832010-03-15 19:23:37 +00002862{
Lars-Peter Clausen91a5fca2011-04-27 18:34:31 +02002863 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
Mark Brownda341832010-03-15 19:23:37 +00002864
Lars-Peter Clausen91a5fca2011-04-27 18:34:31 +02002865 if (!w) {
2866 dev_err(dapm->dev, "dapm: unknown pin %s\n", pin);
2867 return -EINVAL;
Mark Brownda341832010-03-15 19:23:37 +00002868 }
2869
Lars-Peter Clausen91a5fca2011-04-27 18:34:31 +02002870 dev_dbg(w->dapm->dev, "dapm: force enable pin %s\n", pin);
2871 w->connected = 1;
2872 w->force = 1;
Mark Brown75c1f892011-10-04 22:28:08 +01002873 dapm_mark_dirty(w, "force enable");
Mark Brown0d867332011-04-06 11:38:14 +09002874
Lars-Peter Clausen91a5fca2011-04-27 18:34:31 +02002875 return 0;
Mark Brownda341832010-03-15 19:23:37 +00002876}
2877EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin);
2878
2879/**
Liam Girdwooda5302182008-07-07 13:35:17 +01002880 * snd_soc_dapm_disable_pin - disable pin.
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002881 * @dapm: DAPM context
Liam Girdwooda5302182008-07-07 13:35:17 +01002882 * @pin: pin name
Graeme Gregoryeeec12b2008-04-30 19:27:40 +02002883 *
Mark Brown74b8f952009-06-06 11:26:15 +01002884 * Disables input/output pin and its parents or children widgets.
Liam Girdwooda5302182008-07-07 13:35:17 +01002885 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
2886 * do any widget power switching.
Graeme Gregoryeeec12b2008-04-30 19:27:40 +02002887 */
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002888int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm,
2889 const char *pin)
Liam Girdwooda5302182008-07-07 13:35:17 +01002890{
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002891 return snd_soc_dapm_set_pin(dapm, pin, 0);
Liam Girdwooda5302182008-07-07 13:35:17 +01002892}
2893EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin);
2894
2895/**
Mark Brown5817b522008-09-24 11:23:11 +01002896 * snd_soc_dapm_nc_pin - permanently disable pin.
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002897 * @dapm: DAPM context
Mark Brown5817b522008-09-24 11:23:11 +01002898 * @pin: pin name
2899 *
2900 * Marks the specified pin as being not connected, disabling it along
2901 * any parent or child widgets. At present this is identical to
2902 * snd_soc_dapm_disable_pin() but in future it will be extended to do
2903 * additional things such as disabling controls which only affect
2904 * paths through the pin.
2905 *
2906 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
2907 * do any widget power switching.
2908 */
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002909int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin)
Mark Brown5817b522008-09-24 11:23:11 +01002910{
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002911 return snd_soc_dapm_set_pin(dapm, pin, 0);
Mark Brown5817b522008-09-24 11:23:11 +01002912}
2913EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin);
2914
2915/**
Liam Girdwooda5302182008-07-07 13:35:17 +01002916 * snd_soc_dapm_get_pin_status - get audio pin status
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002917 * @dapm: DAPM context
Liam Girdwooda5302182008-07-07 13:35:17 +01002918 * @pin: audio signal pin endpoint (or start point)
2919 *
2920 * Get audio pin status - connected or disconnected.
2921 *
2922 * Returns 1 for connected otherwise 0.
2923 */
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002924int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm,
2925 const char *pin)
Graeme Gregoryeeec12b2008-04-30 19:27:40 +02002926{
Lars-Peter Clausen91a5fca2011-04-27 18:34:31 +02002927 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
Graeme Gregoryeeec12b2008-04-30 19:27:40 +02002928
Lars-Peter Clausen91a5fca2011-04-27 18:34:31 +02002929 if (w)
2930 return w->connected;
Stephen Warrena68b38a2011-04-19 15:25:11 -06002931
Graeme Gregoryeeec12b2008-04-30 19:27:40 +02002932 return 0;
2933}
Liam Girdwooda5302182008-07-07 13:35:17 +01002934EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status);
Graeme Gregoryeeec12b2008-04-30 19:27:40 +02002935
2936/**
Mark Brown1547aba2010-05-07 21:11:40 +01002937 * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002938 * @dapm: DAPM context
Mark Brown1547aba2010-05-07 21:11:40 +01002939 * @pin: audio signal pin endpoint (or start point)
2940 *
2941 * Mark the given endpoint or pin as ignoring suspend. When the
2942 * system is disabled a path between two endpoints flagged as ignoring
2943 * suspend will not be disabled. The path must already be enabled via
2944 * normal means at suspend time, it will not be turned on if it was not
2945 * already enabled.
2946 */
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002947int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm,
2948 const char *pin)
Mark Brown1547aba2010-05-07 21:11:40 +01002949{
Lars-Peter Clausen91a5fca2011-04-27 18:34:31 +02002950 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, false);
Mark Brown1547aba2010-05-07 21:11:40 +01002951
Lars-Peter Clausen91a5fca2011-04-27 18:34:31 +02002952 if (!w) {
2953 dev_err(dapm->dev, "dapm: unknown pin %s\n", pin);
2954 return -EINVAL;
Mark Brown1547aba2010-05-07 21:11:40 +01002955 }
2956
Lars-Peter Clausen91a5fca2011-04-27 18:34:31 +02002957 w->ignore_suspend = 1;
2958
2959 return 0;
Mark Brown1547aba2010-05-07 21:11:40 +01002960}
2961EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend);
2962
Stephen Warren16332812011-11-23 12:42:04 -07002963static bool snd_soc_dapm_widget_in_card_paths(struct snd_soc_card *card,
2964 struct snd_soc_dapm_widget *w)
2965{
2966 struct snd_soc_dapm_path *p;
2967
2968 list_for_each_entry(p, &card->paths, list) {
2969 if ((p->source == w) || (p->sink == w)) {
2970 dev_dbg(card->dev,
2971 "... Path %s(id:%d dapm:%p) - %s(id:%d dapm:%p)\n",
2972 p->source->name, p->source->id, p->source->dapm,
2973 p->sink->name, p->sink->id, p->sink->dapm);
2974
2975 /* Connected to something other than the codec */
2976 if (p->source->dapm != p->sink->dapm)
2977 return true;
2978 /*
2979 * Loopback connection from codec external pin to
2980 * codec external pin
2981 */
2982 if (p->sink->id == snd_soc_dapm_input) {
2983 switch (p->source->id) {
2984 case snd_soc_dapm_output:
2985 case snd_soc_dapm_micbias:
2986 return true;
2987 default:
2988 break;
2989 }
2990 }
2991 }
2992 }
2993
2994 return false;
2995}
2996
2997/**
2998 * snd_soc_dapm_auto_nc_codec_pins - call snd_soc_dapm_nc_pin for unused pins
2999 * @codec: The codec whose pins should be processed
3000 *
3001 * Automatically call snd_soc_dapm_nc_pin() for any external pins in the codec
3002 * which are unused. Pins are used if they are connected externally to the
3003 * codec, whether that be to some other device, or a loop-back connection to
3004 * the codec itself.
3005 */
3006void snd_soc_dapm_auto_nc_codec_pins(struct snd_soc_codec *codec)
3007{
3008 struct snd_soc_card *card = codec->card;
3009 struct snd_soc_dapm_context *dapm = &codec->dapm;
3010 struct snd_soc_dapm_widget *w;
3011
Mark Browna094b802011-11-27 19:42:20 +00003012 dev_dbg(codec->dev, "Auto NC: DAPMs: card:%p codec:%p\n",
Stephen Warren16332812011-11-23 12:42:04 -07003013 &card->dapm, &codec->dapm);
3014
3015 list_for_each_entry(w, &card->widgets, list) {
3016 if (w->dapm != dapm)
3017 continue;
3018 switch (w->id) {
3019 case snd_soc_dapm_input:
3020 case snd_soc_dapm_output:
3021 case snd_soc_dapm_micbias:
Mark Browna094b802011-11-27 19:42:20 +00003022 dev_dbg(codec->dev, "Auto NC: Checking widget %s\n",
Stephen Warren16332812011-11-23 12:42:04 -07003023 w->name);
3024 if (!snd_soc_dapm_widget_in_card_paths(card, w)) {
Mark Browna094b802011-11-27 19:42:20 +00003025 dev_dbg(codec->dev,
Stephen Warren16332812011-11-23 12:42:04 -07003026 "... Not in map; disabling\n");
3027 snd_soc_dapm_nc_pin(dapm, w->name);
3028 }
3029 break;
3030 default:
3031 break;
3032 }
3033 }
3034}
3035
Mark Brown1547aba2010-05-07 21:11:40 +01003036/**
Richard Purdie2b97eab2006-10-06 18:32:18 +02003037 * snd_soc_dapm_free - free dapm resources
Peter Ujfalusi728a5222011-08-26 16:33:52 +03003038 * @dapm: DAPM context
Richard Purdie2b97eab2006-10-06 18:32:18 +02003039 *
3040 * Free all dapm widgets and resources.
3041 */
Liam Girdwoodce6120c2010-11-05 15:53:46 +02003042void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm)
Richard Purdie2b97eab2006-10-06 18:32:18 +02003043{
Liam Girdwoodce6120c2010-11-05 15:53:46 +02003044 snd_soc_dapm_sys_remove(dapm->dev);
Lars-Peter Clausen6c45e122011-04-30 19:45:50 +02003045 dapm_debugfs_cleanup(dapm);
Liam Girdwoodce6120c2010-11-05 15:53:46 +02003046 dapm_free_widgets(dapm);
Jarkko Nikula7be31be82010-12-14 12:18:32 +02003047 list_del(&dapm->list);
Richard Purdie2b97eab2006-10-06 18:32:18 +02003048}
3049EXPORT_SYMBOL_GPL(snd_soc_dapm_free);
3050
Liam Girdwoodce6120c2010-11-05 15:53:46 +02003051static void soc_dapm_shutdown_codec(struct snd_soc_dapm_context *dapm)
Mark Brown51737472009-06-22 13:16:51 +01003052{
Mark Brown51737472009-06-22 13:16:51 +01003053 struct snd_soc_dapm_widget *w;
3054 LIST_HEAD(down_list);
3055 int powerdown = 0;
3056
Jarkko Nikula97c866d2010-12-14 12:18:31 +02003057 list_for_each_entry(w, &dapm->card->widgets, list) {
3058 if (w->dapm != dapm)
3059 continue;
Mark Brown51737472009-06-22 13:16:51 +01003060 if (w->power) {
Mark Brown828a8422011-01-15 13:14:30 +00003061 dapm_seq_insert(w, &down_list, false);
Mark Brownc2caa4d2009-06-26 15:36:56 +01003062 w->power = 0;
Mark Brown51737472009-06-22 13:16:51 +01003063 powerdown = 1;
3064 }
3065 }
3066
3067 /* If there were no widgets to power down we're already in
3068 * standby.
3069 */
3070 if (powerdown) {
Mark Brown7679e422012-02-22 15:52:56 +00003071 if (dapm->bias_level == SND_SOC_BIAS_ON)
3072 snd_soc_dapm_set_bias_level(dapm,
3073 SND_SOC_BIAS_PREPARE);
Mark Brown828a8422011-01-15 13:14:30 +00003074 dapm_seq_run(dapm, &down_list, 0, false);
Mark Brown7679e422012-02-22 15:52:56 +00003075 if (dapm->bias_level == SND_SOC_BIAS_PREPARE)
3076 snd_soc_dapm_set_bias_level(dapm,
3077 SND_SOC_BIAS_STANDBY);
Mark Brown51737472009-06-22 13:16:51 +01003078 }
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +00003079}
Mark Brown51737472009-06-22 13:16:51 +01003080
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +00003081/*
3082 * snd_soc_dapm_shutdown - callback for system shutdown
3083 */
3084void snd_soc_dapm_shutdown(struct snd_soc_card *card)
3085{
3086 struct snd_soc_codec *codec;
3087
Liam Girdwoodce6120c2010-11-05 15:53:46 +02003088 list_for_each_entry(codec, &card->codec_dev_list, list) {
3089 soc_dapm_shutdown_codec(&codec->dapm);
Mark Brown7679e422012-02-22 15:52:56 +00003090 if (codec->dapm.bias_level == SND_SOC_BIAS_STANDBY)
3091 snd_soc_dapm_set_bias_level(&codec->dapm,
3092 SND_SOC_BIAS_OFF);
Liam Girdwoodce6120c2010-11-05 15:53:46 +02003093 }
Mark Brown51737472009-06-22 13:16:51 +01003094}
3095
Richard Purdie2b97eab2006-10-06 18:32:18 +02003096/* Module information */
Liam Girdwoodd3311242008-10-12 13:17:36 +01003097MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
Richard Purdie2b97eab2006-10-06 18:32:18 +02003098MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
3099MODULE_LICENSE("GPL");