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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>
35#include <linux/delay.h>
36#include <linux/pm.h>
37#include <linux/bitops.h>
38#include <linux/platform_device.h>
39#include <linux/jiffies.h>
Takashi Iwai20496ff2009-08-24 09:40:34 +020040#include <linux/debugfs.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090041#include <linux/slab.h>
Richard Purdie2b97eab2006-10-06 18:32:18 +020042#include <sound/core.h>
43#include <sound/pcm.h>
44#include <sound/pcm_params.h>
Liam Girdwoodce6120c2010-11-05 15:53:46 +020045#include <sound/soc.h>
Richard Purdie2b97eab2006-10-06 18:32:18 +020046#include <sound/initval.h>
47
Mark Brown84e90932010-11-04 00:07:02 -040048#include <trace/events/asoc.h>
49
Richard Purdie2b97eab2006-10-06 18:32:18 +020050/* dapm power sequences - make this per codec in the future */
51static int dapm_up_seq[] = {
Mark Brown38357ab2009-06-06 19:03:23 +010052 [snd_soc_dapm_pre] = 0,
53 [snd_soc_dapm_supply] = 1,
54 [snd_soc_dapm_micbias] = 2,
Mark Brown010ff262009-08-17 17:39:22 +010055 [snd_soc_dapm_aif_in] = 3,
56 [snd_soc_dapm_aif_out] = 3,
57 [snd_soc_dapm_mic] = 4,
58 [snd_soc_dapm_mux] = 5,
59 [snd_soc_dapm_value_mux] = 5,
60 [snd_soc_dapm_dac] = 6,
61 [snd_soc_dapm_mixer] = 7,
62 [snd_soc_dapm_mixer_named_ctl] = 7,
63 [snd_soc_dapm_pga] = 8,
64 [snd_soc_dapm_adc] = 9,
Olaya, Margaritad88429a2010-12-10 21:11:44 -060065 [snd_soc_dapm_out_drv] = 10,
Mark Brown010ff262009-08-17 17:39:22 +010066 [snd_soc_dapm_hp] = 10,
67 [snd_soc_dapm_spk] = 10,
68 [snd_soc_dapm_post] = 11,
Richard Purdie2b97eab2006-10-06 18:32:18 +020069};
Ian Moltonca9c1aa2009-01-06 20:11:51 +000070
Richard Purdie2b97eab2006-10-06 18:32:18 +020071static int dapm_down_seq[] = {
Mark Brown38357ab2009-06-06 19:03:23 +010072 [snd_soc_dapm_pre] = 0,
73 [snd_soc_dapm_adc] = 1,
74 [snd_soc_dapm_hp] = 2,
Mark Brown1ca04062009-08-17 16:26:59 +010075 [snd_soc_dapm_spk] = 2,
Olaya, Margaritad88429a2010-12-10 21:11:44 -060076 [snd_soc_dapm_out_drv] = 2,
Mark Brown38357ab2009-06-06 19:03:23 +010077 [snd_soc_dapm_pga] = 4,
78 [snd_soc_dapm_mixer_named_ctl] = 5,
Mark Browne3d4dab2009-06-07 13:08:45 +010079 [snd_soc_dapm_mixer] = 5,
80 [snd_soc_dapm_dac] = 6,
81 [snd_soc_dapm_mic] = 7,
82 [snd_soc_dapm_micbias] = 8,
83 [snd_soc_dapm_mux] = 9,
84 [snd_soc_dapm_value_mux] = 9,
Mark Brown010ff262009-08-17 17:39:22 +010085 [snd_soc_dapm_aif_in] = 10,
86 [snd_soc_dapm_aif_out] = 10,
87 [snd_soc_dapm_supply] = 11,
88 [snd_soc_dapm_post] = 12,
Richard Purdie2b97eab2006-10-06 18:32:18 +020089};
90
Troy Kisky12ef1932008-10-13 17:42:14 -070091static void pop_wait(u32 pop_time)
Mark Brown15e4c722008-07-02 11:51:20 +010092{
93 if (pop_time)
94 schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time));
95}
96
Jarkko Nikulafd8d3bc2010-11-09 14:40:28 +020097static void pop_dbg(struct device *dev, u32 pop_time, const char *fmt, ...)
Mark Brown15e4c722008-07-02 11:51:20 +010098{
99 va_list args;
Jarkko Nikulafd8d3bc2010-11-09 14:40:28 +0200100 char *buf;
101
102 if (!pop_time)
103 return;
104
105 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
106 if (buf == NULL)
107 return;
Mark Brown15e4c722008-07-02 11:51:20 +0100108
109 va_start(args, fmt);
Jarkko Nikulafd8d3bc2010-11-09 14:40:28 +0200110 vsnprintf(buf, PAGE_SIZE, fmt, args);
111 dev_info(dev, buf);
Mark Brown15e4c722008-07-02 11:51:20 +0100112 va_end(args);
Jarkko Nikulafd8d3bc2010-11-09 14:40:28 +0200113
114 kfree(buf);
Mark Brown15e4c722008-07-02 11:51:20 +0100115}
116
Richard Purdie2b97eab2006-10-06 18:32:18 +0200117/* create a new dapm widget */
Takashi Iwai88cb4292007-02-05 14:56:20 +0100118static inline struct snd_soc_dapm_widget *dapm_cnew_widget(
Richard Purdie2b97eab2006-10-06 18:32:18 +0200119 const struct snd_soc_dapm_widget *_widget)
120{
Takashi Iwai88cb4292007-02-05 14:56:20 +0100121 return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL);
Richard Purdie2b97eab2006-10-06 18:32:18 +0200122}
123
Mark Brown452c5ea2009-05-17 21:41:23 +0100124/**
125 * snd_soc_dapm_set_bias_level - set the bias level for the system
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000126 * @card: audio device
Mark Brown452c5ea2009-05-17 21:41:23 +0100127 * @level: level to configure
128 *
129 * Configure the bias (power) levels for the SoC audio device.
130 *
131 * Returns 0 for success else error.
132 */
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000133static int snd_soc_dapm_set_bias_level(struct snd_soc_card *card,
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200134 struct snd_soc_dapm_context *dapm,
135 enum snd_soc_bias_level level)
Mark Brown452c5ea2009-05-17 21:41:23 +0100136{
Mark Brown452c5ea2009-05-17 21:41:23 +0100137 int ret = 0;
138
Mark Brownf83fba82009-05-18 15:44:43 +0100139 switch (level) {
140 case SND_SOC_BIAS_ON:
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200141 dev_dbg(dapm->dev, "Setting full bias\n");
Mark Brownf83fba82009-05-18 15:44:43 +0100142 break;
143 case SND_SOC_BIAS_PREPARE:
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200144 dev_dbg(dapm->dev, "Setting bias prepare\n");
Mark Brownf83fba82009-05-18 15:44:43 +0100145 break;
146 case SND_SOC_BIAS_STANDBY:
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200147 dev_dbg(dapm->dev, "Setting standby bias\n");
Mark Brownf83fba82009-05-18 15:44:43 +0100148 break;
149 case SND_SOC_BIAS_OFF:
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200150 dev_dbg(dapm->dev, "Setting bias off\n");
Mark Brownf83fba82009-05-18 15:44:43 +0100151 break;
152 default:
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200153 dev_err(dapm->dev, "Setting invalid bias %d\n", level);
Mark Brownf83fba82009-05-18 15:44:43 +0100154 return -EINVAL;
155 }
156
Mark Brown84e90932010-11-04 00:07:02 -0400157 trace_snd_soc_bias_level_start(card, level);
158
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000159 if (card && card->set_bias_level)
Mark Brown452c5ea2009-05-17 21:41:23 +0100160 ret = card->set_bias_level(card, level);
Mark Brown474e09c2009-08-19 14:18:53 +0100161 if (ret == 0) {
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200162 if (dapm->codec && dapm->codec->driver->set_bias_level)
163 ret = dapm->codec->driver->set_bias_level(dapm->codec, level);
Mark Brown474e09c2009-08-19 14:18:53 +0100164 else
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200165 dapm->bias_level = level;
Mark Brown474e09c2009-08-19 14:18:53 +0100166 }
Mark Brown1badabd2010-12-04 12:41:04 +0000167 if (ret == 0) {
168 if (card && card->set_bias_level_post)
169 ret = card->set_bias_level_post(card, level);
170 }
Mark Brown452c5ea2009-05-17 21:41:23 +0100171
Mark Brown84e90932010-11-04 00:07:02 -0400172 trace_snd_soc_bias_level_done(card, level);
173
Mark Brown452c5ea2009-05-17 21:41:23 +0100174 return ret;
175}
176
Richard Purdie2b97eab2006-10-06 18:32:18 +0200177/* set up initial codec paths */
178static void dapm_set_path_status(struct snd_soc_dapm_widget *w,
179 struct snd_soc_dapm_path *p, int i)
180{
181 switch (w->id) {
182 case snd_soc_dapm_switch:
Ian Moltonca9c1aa2009-01-06 20:11:51 +0000183 case snd_soc_dapm_mixer:
184 case snd_soc_dapm_mixer_named_ctl: {
Richard Purdie2b97eab2006-10-06 18:32:18 +0200185 int val;
Jon Smirl4eaa9812008-07-29 11:42:26 +0100186 struct soc_mixer_control *mc = (struct soc_mixer_control *)
187 w->kcontrols[i].private_value;
Jon Smirl815ecf8d2008-07-29 10:22:24 -0400188 unsigned int reg = mc->reg;
189 unsigned int shift = mc->shift;
Jon Smirl4eaa9812008-07-29 11:42:26 +0100190 int max = mc->max;
Jon Smirl815ecf8d2008-07-29 10:22:24 -0400191 unsigned int mask = (1 << fls(max)) - 1;
192 unsigned int invert = mc->invert;
Richard Purdie2b97eab2006-10-06 18:32:18 +0200193
194 val = snd_soc_read(w->codec, reg);
195 val = (val >> shift) & mask;
196
197 if ((invert && !val) || (!invert && val))
198 p->connect = 1;
199 else
200 p->connect = 0;
201 }
202 break;
203 case snd_soc_dapm_mux: {
204 struct soc_enum *e = (struct soc_enum *)w->kcontrols[i].private_value;
205 int val, item, bitmask;
206
Jon Smirlf8ba0b72008-07-29 11:42:27 +0100207 for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
Richard Purdie2b97eab2006-10-06 18:32:18 +0200208 ;
209 val = snd_soc_read(w->codec, e->reg);
210 item = (val >> e->shift_l) & (bitmask - 1);
211
212 p->connect = 0;
Jon Smirlf8ba0b72008-07-29 11:42:27 +0100213 for (i = 0; i < e->max; i++) {
Richard Purdie2b97eab2006-10-06 18:32:18 +0200214 if (!(strcmp(p->name, e->texts[i])) && item == i)
215 p->connect = 1;
216 }
217 }
218 break;
Peter Ujfalusi2e72f8e2009-01-05 09:54:57 +0200219 case snd_soc_dapm_value_mux: {
Peter Ujfalusi74155552009-01-08 13:34:29 +0200220 struct soc_enum *e = (struct soc_enum *)
Peter Ujfalusi2e72f8e2009-01-05 09:54:57 +0200221 w->kcontrols[i].private_value;
222 int val, item;
223
224 val = snd_soc_read(w->codec, e->reg);
225 val = (val >> e->shift_l) & e->mask;
226 for (item = 0; item < e->max; item++) {
227 if (val == e->values[item])
228 break;
229 }
230
231 p->connect = 0;
232 for (i = 0; i < e->max; i++) {
233 if (!(strcmp(p->name, e->texts[i])) && item == i)
234 p->connect = 1;
235 }
236 }
237 break;
Richard Purdie2b97eab2006-10-06 18:32:18 +0200238 /* does not effect routing - always connected */
239 case snd_soc_dapm_pga:
Olaya, Margaritad88429a2010-12-10 21:11:44 -0600240 case snd_soc_dapm_out_drv:
Richard Purdie2b97eab2006-10-06 18:32:18 +0200241 case snd_soc_dapm_output:
242 case snd_soc_dapm_adc:
243 case snd_soc_dapm_input:
244 case snd_soc_dapm_dac:
245 case snd_soc_dapm_micbias:
246 case snd_soc_dapm_vmid:
Mark Brown246d0a12009-04-22 18:24:55 +0100247 case snd_soc_dapm_supply:
Mark Brown010ff262009-08-17 17:39:22 +0100248 case snd_soc_dapm_aif_in:
249 case snd_soc_dapm_aif_out:
Richard Purdie2b97eab2006-10-06 18:32:18 +0200250 p->connect = 1;
251 break;
252 /* does effect routing - dynamically connected */
253 case snd_soc_dapm_hp:
254 case snd_soc_dapm_mic:
255 case snd_soc_dapm_spk:
256 case snd_soc_dapm_line:
257 case snd_soc_dapm_pre:
258 case snd_soc_dapm_post:
259 p->connect = 0;
260 break;
261 }
262}
263
Mark Brown74b8f952009-06-06 11:26:15 +0100264/* connect mux widget to its interconnecting audio paths */
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200265static int dapm_connect_mux(struct snd_soc_dapm_context *dapm,
Richard Purdie2b97eab2006-10-06 18:32:18 +0200266 struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest,
267 struct snd_soc_dapm_path *path, const char *control_name,
268 const struct snd_kcontrol_new *kcontrol)
269{
270 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
271 int i;
272
Jon Smirlf8ba0b72008-07-29 11:42:27 +0100273 for (i = 0; i < e->max; i++) {
Richard Purdie2b97eab2006-10-06 18:32:18 +0200274 if (!(strcmp(control_name, e->texts[i]))) {
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200275 list_add(&path->list, &dapm->paths);
Richard Purdie2b97eab2006-10-06 18:32:18 +0200276 list_add(&path->list_sink, &dest->sources);
277 list_add(&path->list_source, &src->sinks);
278 path->name = (char*)e->texts[i];
279 dapm_set_path_status(dest, path, 0);
280 return 0;
281 }
282 }
283
284 return -ENODEV;
285}
286
Mark Brown74b8f952009-06-06 11:26:15 +0100287/* connect mixer widget to its interconnecting audio paths */
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200288static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm,
Richard Purdie2b97eab2006-10-06 18:32:18 +0200289 struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest,
290 struct snd_soc_dapm_path *path, const char *control_name)
291{
292 int i;
293
294 /* search for mixer kcontrol */
295 for (i = 0; i < dest->num_kcontrols; i++) {
296 if (!strcmp(control_name, dest->kcontrols[i].name)) {
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200297 list_add(&path->list, &dapm->paths);
Richard Purdie2b97eab2006-10-06 18:32:18 +0200298 list_add(&path->list_sink, &dest->sources);
299 list_add(&path->list_source, &src->sinks);
300 path->name = dest->kcontrols[i].name;
301 dapm_set_path_status(dest, path, i);
302 return 0;
303 }
304 }
305 return -ENODEV;
306}
307
308/* update dapm codec register bits */
309static int dapm_update_bits(struct snd_soc_dapm_widget *widget)
310{
311 int change, power;
Daniel Ribeiro46f58222009-06-07 02:49:11 -0300312 unsigned int old, new;
Richard Purdie2b97eab2006-10-06 18:32:18 +0200313 struct snd_soc_codec *codec = widget->codec;
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200314 struct snd_soc_dapm_context *dapm = widget->dapm;
Jarkko Nikula3a45b862010-11-05 20:35:21 +0200315 struct snd_soc_card *card = dapm->card;
Richard Purdie2b97eab2006-10-06 18:32:18 +0200316
317 /* check for valid widgets */
318 if (widget->reg < 0 || widget->id == snd_soc_dapm_input ||
319 widget->id == snd_soc_dapm_output ||
320 widget->id == snd_soc_dapm_hp ||
321 widget->id == snd_soc_dapm_mic ||
322 widget->id == snd_soc_dapm_line ||
323 widget->id == snd_soc_dapm_spk)
324 return 0;
325
326 power = widget->power;
327 if (widget->invert)
328 power = (power ? 0:1);
329
330 old = snd_soc_read(codec, widget->reg);
331 new = (old & ~(0x1 << widget->shift)) | (power << widget->shift);
332
333 change = old != new;
334 if (change) {
Jarkko Nikulafd8d3bc2010-11-09 14:40:28 +0200335 pop_dbg(dapm->dev, card->pop_time,
336 "pop test %s : %s in %d ms\n",
Troy Kisky12ef1932008-10-13 17:42:14 -0700337 widget->name, widget->power ? "on" : "off",
Jarkko Nikula3a45b862010-11-05 20:35:21 +0200338 card->pop_time);
339 pop_wait(card->pop_time);
Mark Brown69224712010-03-03 14:57:09 +0000340 snd_soc_write(codec, widget->reg, new);
Richard Purdie2b97eab2006-10-06 18:32:18 +0200341 }
Jarkko Nikulaf7d41ae2010-11-09 14:40:27 +0200342 dev_dbg(dapm->dev, "reg %x old %x new %x change %d\n", widget->reg,
343 old, new, change);
Richard Purdie2b97eab2006-10-06 18:32:18 +0200344 return change;
345}
346
Richard Purdie2b97eab2006-10-06 18:32:18 +0200347/* create new dapm mixer control */
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200348static int dapm_new_mixer(struct snd_soc_dapm_context *dapm,
Richard Purdie2b97eab2006-10-06 18:32:18 +0200349 struct snd_soc_dapm_widget *w)
350{
351 int i, ret = 0;
Mark Brown219b93f2008-10-28 13:02:31 +0000352 size_t name_len;
Richard Purdie2b97eab2006-10-06 18:32:18 +0200353 struct snd_soc_dapm_path *path;
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200354 struct snd_card *card = dapm->codec->card->snd_card;
Richard Purdie2b97eab2006-10-06 18:32:18 +0200355
356 /* add kcontrol */
357 for (i = 0; i < w->num_kcontrols; i++) {
358
359 /* match name */
360 list_for_each_entry(path, &w->sources, list_sink) {
361
362 /* mixer/mux paths name must match control name */
363 if (path->name != (char*)w->kcontrols[i].name)
364 continue;
365
Ian Moltonca9c1aa2009-01-06 20:11:51 +0000366 /* add dapm control with long name.
367 * for dapm_mixer this is the concatenation of the
368 * mixer and kcontrol name.
369 * for dapm_mixer_named_ctl this is simply the
370 * kcontrol name.
371 */
372 name_len = strlen(w->kcontrols[i].name) + 1;
Mark Brown07495f32009-03-05 17:06:23 +0000373 if (w->id != snd_soc_dapm_mixer_named_ctl)
Ian Moltonca9c1aa2009-01-06 20:11:51 +0000374 name_len += 1 + strlen(w->name);
375
Mark Brown219b93f2008-10-28 13:02:31 +0000376 path->long_name = kmalloc(name_len, GFP_KERNEL);
Ian Moltonca9c1aa2009-01-06 20:11:51 +0000377
Richard Purdie2b97eab2006-10-06 18:32:18 +0200378 if (path->long_name == NULL)
379 return -ENOMEM;
380
Ian Moltonca9c1aa2009-01-06 20:11:51 +0000381 switch (w->id) {
Ian Moltonca9c1aa2009-01-06 20:11:51 +0000382 default:
383 snprintf(path->long_name, name_len, "%s %s",
384 w->name, w->kcontrols[i].name);
Mark Brown07495f32009-03-05 17:06:23 +0000385 break;
Ian Moltonca9c1aa2009-01-06 20:11:51 +0000386 case snd_soc_dapm_mixer_named_ctl:
387 snprintf(path->long_name, name_len, "%s",
388 w->kcontrols[i].name);
Mark Brown07495f32009-03-05 17:06:23 +0000389 break;
Ian Moltonca9c1aa2009-01-06 20:11:51 +0000390 }
391
Mark Brown219b93f2008-10-28 13:02:31 +0000392 path->long_name[name_len - 1] = '\0';
393
Richard Purdie2b97eab2006-10-06 18:32:18 +0200394 path->kcontrol = snd_soc_cnew(&w->kcontrols[i], w,
395 path->long_name);
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200396 ret = snd_ctl_add(card, path->kcontrol);
Richard Purdie2b97eab2006-10-06 18:32:18 +0200397 if (ret < 0) {
Jarkko Nikulaf7d41ae2010-11-09 14:40:27 +0200398 dev_err(dapm->dev,
399 "asoc: failed to add dapm kcontrol %s: %d\n",
400 path->long_name, ret);
Richard Purdie2b97eab2006-10-06 18:32:18 +0200401 kfree(path->long_name);
402 path->long_name = NULL;
403 return ret;
404 }
405 }
406 }
407 return ret;
408}
409
410/* create new dapm mux control */
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200411static int dapm_new_mux(struct snd_soc_dapm_context *dapm,
Richard Purdie2b97eab2006-10-06 18:32:18 +0200412 struct snd_soc_dapm_widget *w)
413{
414 struct snd_soc_dapm_path *path = NULL;
415 struct snd_kcontrol *kcontrol;
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200416 struct snd_card *card = dapm->codec->card->snd_card;
Richard Purdie2b97eab2006-10-06 18:32:18 +0200417 int ret = 0;
418
419 if (!w->num_kcontrols) {
Jarkko Nikulaf7d41ae2010-11-09 14:40:27 +0200420 dev_err(dapm->dev, "asoc: mux %s has no controls\n", w->name);
Richard Purdie2b97eab2006-10-06 18:32:18 +0200421 return -EINVAL;
422 }
423
424 kcontrol = snd_soc_cnew(&w->kcontrols[0], w, w->name);
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200425 ret = snd_ctl_add(card, kcontrol);
426
Richard Purdie2b97eab2006-10-06 18:32:18 +0200427 if (ret < 0)
428 goto err;
429
430 list_for_each_entry(path, &w->sources, list_sink)
431 path->kcontrol = kcontrol;
432
433 return ret;
434
435err:
Jarkko Nikulaf7d41ae2010-11-09 14:40:27 +0200436 dev_err(dapm->dev, "asoc: failed to add kcontrol %s\n", w->name);
Richard Purdie2b97eab2006-10-06 18:32:18 +0200437 return ret;
438}
439
440/* create new dapm volume control */
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200441static int dapm_new_pga(struct snd_soc_dapm_context *dapm,
Richard Purdie2b97eab2006-10-06 18:32:18 +0200442 struct snd_soc_dapm_widget *w)
443{
Mark Browna6c65732010-03-03 17:45:21 +0000444 if (w->num_kcontrols)
Jarkko Nikulaf7d41ae2010-11-09 14:40:27 +0200445 dev_err(w->dapm->dev,
446 "asoc: PGA controls not supported: '%s'\n", w->name);
Richard Purdie2b97eab2006-10-06 18:32:18 +0200447
Mark Browna6c65732010-03-03 17:45:21 +0000448 return 0;
Richard Purdie2b97eab2006-10-06 18:32:18 +0200449}
450
451/* reset 'walked' bit for each dapm path */
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200452static inline void dapm_clear_walk(struct snd_soc_dapm_context *dapm)
Richard Purdie2b97eab2006-10-06 18:32:18 +0200453{
454 struct snd_soc_dapm_path *p;
455
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200456 list_for_each_entry(p, &dapm->paths, list)
Richard Purdie2b97eab2006-10-06 18:32:18 +0200457 p->walked = 0;
458}
459
Mark Brown99497882010-05-07 20:24:05 +0100460/* We implement power down on suspend by checking the power state of
461 * the ALSA card - when we are suspending the ALSA state for the card
462 * is set to D3.
463 */
464static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget)
465{
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200466 int level = snd_power_get_state(widget->dapm->codec->card->snd_card);
Mark Brown99497882010-05-07 20:24:05 +0100467
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000468 switch (level) {
Mark Brown99497882010-05-07 20:24:05 +0100469 case SNDRV_CTL_POWER_D3hot:
470 case SNDRV_CTL_POWER_D3cold:
Mark Brown1547aba2010-05-07 21:11:40 +0100471 if (widget->ignore_suspend)
Jarkko Nikulaf7d41ae2010-11-09 14:40:27 +0200472 dev_dbg(widget->dapm->dev, "%s ignoring suspend\n",
473 widget->name);
Mark Brown1547aba2010-05-07 21:11:40 +0100474 return widget->ignore_suspend;
Mark Brown99497882010-05-07 20:24:05 +0100475 default:
476 return 1;
477 }
478}
479
Richard Purdie2b97eab2006-10-06 18:32:18 +0200480/*
481 * Recursively check for a completed path to an active or physically connected
482 * output widget. Returns number of complete paths.
483 */
484static int is_connected_output_ep(struct snd_soc_dapm_widget *widget)
485{
486 struct snd_soc_dapm_path *path;
487 int con = 0;
488
Mark Brown246d0a12009-04-22 18:24:55 +0100489 if (widget->id == snd_soc_dapm_supply)
490 return 0;
491
Mark Brown010ff262009-08-17 17:39:22 +0100492 switch (widget->id) {
493 case snd_soc_dapm_adc:
494 case snd_soc_dapm_aif_out:
495 if (widget->active)
Mark Brown99497882010-05-07 20:24:05 +0100496 return snd_soc_dapm_suspend_check(widget);
Mark Brown010ff262009-08-17 17:39:22 +0100497 default:
498 break;
499 }
Richard Purdie2b97eab2006-10-06 18:32:18 +0200500
501 if (widget->connected) {
502 /* connected pin ? */
503 if (widget->id == snd_soc_dapm_output && !widget->ext)
Mark Brown99497882010-05-07 20:24:05 +0100504 return snd_soc_dapm_suspend_check(widget);
Richard Purdie2b97eab2006-10-06 18:32:18 +0200505
506 /* connected jack or spk ? */
507 if (widget->id == snd_soc_dapm_hp || widget->id == snd_soc_dapm_spk ||
Peter Ujfalusieaeae5d2009-09-30 09:27:24 +0300508 (widget->id == snd_soc_dapm_line && !list_empty(&widget->sources)))
Mark Brown99497882010-05-07 20:24:05 +0100509 return snd_soc_dapm_suspend_check(widget);
Richard Purdie2b97eab2006-10-06 18:32:18 +0200510 }
511
512 list_for_each_entry(path, &widget->sinks, list_source) {
513 if (path->walked)
514 continue;
515
516 if (path->sink && path->connect) {
517 path->walked = 1;
518 con += is_connected_output_ep(path->sink);
519 }
520 }
521
522 return con;
523}
524
525/*
526 * Recursively check for a completed path to an active or physically connected
527 * input widget. Returns number of complete paths.
528 */
529static int is_connected_input_ep(struct snd_soc_dapm_widget *widget)
530{
531 struct snd_soc_dapm_path *path;
532 int con = 0;
533
Mark Brown246d0a12009-04-22 18:24:55 +0100534 if (widget->id == snd_soc_dapm_supply)
535 return 0;
536
Richard Purdie2b97eab2006-10-06 18:32:18 +0200537 /* active stream ? */
Mark Brown010ff262009-08-17 17:39:22 +0100538 switch (widget->id) {
539 case snd_soc_dapm_dac:
540 case snd_soc_dapm_aif_in:
541 if (widget->active)
Mark Brown99497882010-05-07 20:24:05 +0100542 return snd_soc_dapm_suspend_check(widget);
Mark Brown010ff262009-08-17 17:39:22 +0100543 default:
544 break;
545 }
Richard Purdie2b97eab2006-10-06 18:32:18 +0200546
547 if (widget->connected) {
548 /* connected pin ? */
549 if (widget->id == snd_soc_dapm_input && !widget->ext)
Mark Brown99497882010-05-07 20:24:05 +0100550 return snd_soc_dapm_suspend_check(widget);
Richard Purdie2b97eab2006-10-06 18:32:18 +0200551
552 /* connected VMID/Bias for lower pops */
553 if (widget->id == snd_soc_dapm_vmid)
Mark Brown99497882010-05-07 20:24:05 +0100554 return snd_soc_dapm_suspend_check(widget);
Richard Purdie2b97eab2006-10-06 18:32:18 +0200555
556 /* connected jack ? */
Peter Ujfalusieaeae5d2009-09-30 09:27:24 +0300557 if (widget->id == snd_soc_dapm_mic ||
558 (widget->id == snd_soc_dapm_line && !list_empty(&widget->sinks)))
Mark Brown99497882010-05-07 20:24:05 +0100559 return snd_soc_dapm_suspend_check(widget);
Richard Purdie2b97eab2006-10-06 18:32:18 +0200560 }
561
562 list_for_each_entry(path, &widget->sources, list_sink) {
563 if (path->walked)
564 continue;
565
566 if (path->source && path->connect) {
567 path->walked = 1;
568 con += is_connected_input_ep(path->source);
569 }
570 }
571
572 return con;
573}
574
575/*
Jarkko Nikulae2be2cc2008-06-25 14:42:07 +0300576 * Handler for generic register modifier widget.
577 */
578int dapm_reg_event(struct snd_soc_dapm_widget *w,
579 struct snd_kcontrol *kcontrol, int event)
580{
581 unsigned int val;
582
583 if (SND_SOC_DAPM_EVENT_ON(event))
584 val = w->on_val;
585 else
586 val = w->off_val;
587
588 snd_soc_update_bits(w->codec, -(w->reg + 1),
589 w->mask << w->shift, val << w->shift);
590
591 return 0;
592}
Mark Brown11589412008-07-29 11:42:23 +0100593EXPORT_SYMBOL_GPL(dapm_reg_event);
Jarkko Nikulae2be2cc2008-06-25 14:42:07 +0300594
Mark Brown025756e2009-04-13 11:09:18 +0100595/* Standard power change method, used to apply power changes to most
596 * widgets.
597 */
598static int dapm_generic_apply_power(struct snd_soc_dapm_widget *w)
599{
600 int ret;
601
602 /* call any power change event handlers */
603 if (w->event)
Jarkko Nikulaf7d41ae2010-11-09 14:40:27 +0200604 dev_dbg(w->dapm->dev, "power %s event for %s flags %x\n",
Mark Brown025756e2009-04-13 11:09:18 +0100605 w->power ? "on" : "off",
606 w->name, w->event_flags);
607
608 /* power up pre event */
609 if (w->power && w->event &&
610 (w->event_flags & SND_SOC_DAPM_PRE_PMU)) {
611 ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMU);
612 if (ret < 0)
613 return ret;
614 }
615
616 /* power down pre event */
617 if (!w->power && w->event &&
618 (w->event_flags & SND_SOC_DAPM_PRE_PMD)) {
619 ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMD);
620 if (ret < 0)
621 return ret;
622 }
623
Mark Brown025756e2009-04-13 11:09:18 +0100624 dapm_update_bits(w);
625
Mark Brown025756e2009-04-13 11:09:18 +0100626 /* power up post event */
627 if (w->power && w->event &&
628 (w->event_flags & SND_SOC_DAPM_POST_PMU)) {
629 ret = w->event(w,
630 NULL, SND_SOC_DAPM_POST_PMU);
631 if (ret < 0)
632 return ret;
633 }
634
635 /* power down post event */
636 if (!w->power && w->event &&
637 (w->event_flags & SND_SOC_DAPM_POST_PMD)) {
638 ret = w->event(w, NULL, SND_SOC_DAPM_POST_PMD);
639 if (ret < 0)
640 return ret;
641 }
642
643 return 0;
644}
645
Mark Browncd0f2d42009-04-20 16:56:59 +0100646/* Generic check to see if a widget should be powered.
647 */
648static int dapm_generic_check_power(struct snd_soc_dapm_widget *w)
649{
650 int in, out;
651
652 in = is_connected_input_ep(w);
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200653 dapm_clear_walk(w->dapm);
Mark Browncd0f2d42009-04-20 16:56:59 +0100654 out = is_connected_output_ep(w);
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200655 dapm_clear_walk(w->dapm);
Mark Browncd0f2d42009-04-20 16:56:59 +0100656 return out != 0 && in != 0;
657}
658
Mark Brown6ea31b92009-04-20 17:15:41 +0100659/* Check to see if an ADC has power */
660static int dapm_adc_check_power(struct snd_soc_dapm_widget *w)
661{
662 int in;
663
664 if (w->active) {
665 in = is_connected_input_ep(w);
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200666 dapm_clear_walk(w->dapm);
Mark Brown6ea31b92009-04-20 17:15:41 +0100667 return in != 0;
668 } else {
669 return dapm_generic_check_power(w);
670 }
671}
672
673/* Check to see if a DAC has power */
674static int dapm_dac_check_power(struct snd_soc_dapm_widget *w)
675{
676 int out;
677
678 if (w->active) {
679 out = is_connected_output_ep(w);
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200680 dapm_clear_walk(w->dapm);
Mark Brown6ea31b92009-04-20 17:15:41 +0100681 return out != 0;
682 } else {
683 return dapm_generic_check_power(w);
684 }
685}
686
Mark Brown246d0a12009-04-22 18:24:55 +0100687/* Check to see if a power supply is needed */
688static int dapm_supply_check_power(struct snd_soc_dapm_widget *w)
689{
690 struct snd_soc_dapm_path *path;
691 int power = 0;
692
693 /* Check if one of our outputs is connected */
694 list_for_each_entry(path, &w->sinks, list_source) {
Mark Brown215edda2009-09-08 18:59:05 +0100695 if (path->connected &&
696 !path->connected(path->source, path->sink))
697 continue;
698
Mark Brown246d0a12009-04-22 18:24:55 +0100699 if (path->sink && path->sink->power_check &&
700 path->sink->power_check(path->sink)) {
701 power = 1;
702 break;
703 }
704 }
705
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200706 dapm_clear_walk(w->dapm);
Mark Brown246d0a12009-04-22 18:24:55 +0100707
708 return power;
709}
710
Mark Brown38357ab2009-06-06 19:03:23 +0100711static int dapm_seq_compare(struct snd_soc_dapm_widget *a,
712 struct snd_soc_dapm_widget *b,
713 int sort[])
Mark Brown42aa3412009-03-01 19:21:10 +0000714{
Mark Brown38357ab2009-06-06 19:03:23 +0100715 if (sort[a->id] != sort[b->id])
716 return sort[a->id] - sort[b->id];
Mark Brownb22ead22009-06-07 12:51:26 +0100717 if (a->reg != b->reg)
718 return a->reg - b->reg;
Mark Brown84dab562010-11-12 15:28:42 +0000719 if (a->dapm != b->dapm)
720 return (unsigned long)a->dapm - (unsigned long)b->dapm;
Mark Brown42aa3412009-03-01 19:21:10 +0000721
Mark Brown38357ab2009-06-06 19:03:23 +0100722 return 0;
723}
Mark Brown42aa3412009-03-01 19:21:10 +0000724
Mark Brown38357ab2009-06-06 19:03:23 +0100725/* Insert a widget in order into a DAPM power sequence. */
726static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget,
727 struct list_head *list,
728 int sort[])
729{
730 struct snd_soc_dapm_widget *w;
731
732 list_for_each_entry(w, list, power_list)
733 if (dapm_seq_compare(new_widget, w, sort) < 0) {
734 list_add_tail(&new_widget->power_list, &w->power_list);
735 return;
Mark Brown42aa3412009-03-01 19:21:10 +0000736 }
Mark Brown6ea31b92009-04-20 17:15:41 +0100737
Mark Brown38357ab2009-06-06 19:03:23 +0100738 list_add_tail(&new_widget->power_list, list);
739}
Mark Brown42aa3412009-03-01 19:21:10 +0000740
Mark Brown68f89ad2010-11-03 23:51:49 -0400741static void dapm_seq_check_event(struct snd_soc_dapm_context *dapm,
742 struct snd_soc_dapm_widget *w, int event)
743{
744 struct snd_soc_card *card = dapm->card;
745 const char *ev_name;
746 int power, ret;
747
748 switch (event) {
749 case SND_SOC_DAPM_PRE_PMU:
750 ev_name = "PRE_PMU";
751 power = 1;
752 break;
753 case SND_SOC_DAPM_POST_PMU:
754 ev_name = "POST_PMU";
755 power = 1;
756 break;
757 case SND_SOC_DAPM_PRE_PMD:
758 ev_name = "PRE_PMD";
759 power = 0;
760 break;
761 case SND_SOC_DAPM_POST_PMD:
762 ev_name = "POST_PMD";
763 power = 0;
764 break;
765 default:
766 BUG();
767 return;
768 }
769
770 if (w->power != power)
771 return;
772
773 if (w->event && (w->event_flags & event)) {
774 pop_dbg(dapm->dev, card->pop_time, "pop test : %s %s\n",
775 w->name, ev_name);
Mark Brown84e90932010-11-04 00:07:02 -0400776 trace_snd_soc_dapm_widget_event_start(w, event);
Mark Brown68f89ad2010-11-03 23:51:49 -0400777 ret = w->event(w, NULL, event);
Mark Brown84e90932010-11-04 00:07:02 -0400778 trace_snd_soc_dapm_widget_event_done(w, event);
Mark Brown68f89ad2010-11-03 23:51:49 -0400779 if (ret < 0)
780 pr_err("%s: %s event failed: %d\n",
781 ev_name, w->name, ret);
782 }
783}
784
Mark Brownb22ead22009-06-07 12:51:26 +0100785/* Apply the coalesced changes from a DAPM sequence */
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200786static void dapm_seq_run_coalesced(struct snd_soc_dapm_context *dapm,
Mark Brownb22ead22009-06-07 12:51:26 +0100787 struct list_head *pending)
Mark Brown163cac02009-06-07 10:12:52 +0100788{
Jarkko Nikula3a45b862010-11-05 20:35:21 +0200789 struct snd_soc_card *card = dapm->card;
Mark Brown68f89ad2010-11-03 23:51:49 -0400790 struct snd_soc_dapm_widget *w;
791 int reg, power;
Mark Brownb22ead22009-06-07 12:51:26 +0100792 unsigned int value = 0;
793 unsigned int mask = 0;
794 unsigned int cur_mask;
795
796 reg = list_first_entry(pending, struct snd_soc_dapm_widget,
797 power_list)->reg;
798
799 list_for_each_entry(w, pending, power_list) {
800 cur_mask = 1 << w->shift;
801 BUG_ON(reg != w->reg);
802
803 if (w->invert)
804 power = !w->power;
805 else
806 power = w->power;
807
808 mask |= cur_mask;
809 if (power)
810 value |= cur_mask;
811
Jarkko Nikulafd8d3bc2010-11-09 14:40:28 +0200812 pop_dbg(dapm->dev, card->pop_time,
Mark Brownb22ead22009-06-07 12:51:26 +0100813 "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
814 w->name, reg, value, mask);
Mark Brown81628102009-06-07 13:21:24 +0100815
Mark Brown68f89ad2010-11-03 23:51:49 -0400816 /* Check for events */
817 dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMU);
818 dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMD);
Mark Brownb22ead22009-06-07 12:51:26 +0100819 }
820
Mark Brown81628102009-06-07 13:21:24 +0100821 if (reg >= 0) {
Jarkko Nikulafd8d3bc2010-11-09 14:40:28 +0200822 pop_dbg(dapm->dev, card->pop_time,
Mark Brown81628102009-06-07 13:21:24 +0100823 "pop test : Applying 0x%x/0x%x to %x in %dms\n",
Jarkko Nikula3a45b862010-11-05 20:35:21 +0200824 value, mask, reg, card->pop_time);
825 pop_wait(card->pop_time);
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200826 snd_soc_update_bits(dapm->codec, reg, mask, value);
Mark Brown81628102009-06-07 13:21:24 +0100827 }
828
829 list_for_each_entry(w, pending, power_list) {
Mark Brown68f89ad2010-11-03 23:51:49 -0400830 dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMU);
831 dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMD);
Mark Brown42aa3412009-03-01 19:21:10 +0000832 }
Mark Brown42aa3412009-03-01 19:21:10 +0000833}
834
Mark Brownb22ead22009-06-07 12:51:26 +0100835/* Apply a DAPM power sequence.
836 *
837 * We walk over a pre-sorted list of widgets to apply power to. In
838 * order to minimise the number of writes to the device required
839 * multiple widgets will be updated in a single write where possible.
840 * Currently anything that requires more than a single write is not
841 * handled.
842 */
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200843static void dapm_seq_run(struct snd_soc_dapm_context *dapm,
844 struct list_head *list, int event, int sort[])
Mark Brownb22ead22009-06-07 12:51:26 +0100845{
846 struct snd_soc_dapm_widget *w, *n;
847 LIST_HEAD(pending);
848 int cur_sort = -1;
849 int cur_reg = SND_SOC_NOPM;
Mark Brown163cac02009-06-07 10:12:52 +0100850 int ret;
851
Mark Brownb22ead22009-06-07 12:51:26 +0100852 list_for_each_entry_safe(w, n, list, power_list) {
853 ret = 0;
854
855 /* Do we need to apply any queued changes? */
856 if (sort[w->id] != cur_sort || w->reg != cur_reg) {
857 if (!list_empty(&pending))
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200858 dapm_seq_run_coalesced(dapm, &pending);
Mark Brownb22ead22009-06-07 12:51:26 +0100859
860 INIT_LIST_HEAD(&pending);
861 cur_sort = -1;
862 cur_reg = SND_SOC_NOPM;
863 }
864
Mark Brown163cac02009-06-07 10:12:52 +0100865 switch (w->id) {
866 case snd_soc_dapm_pre:
867 if (!w->event)
Mark Brownb22ead22009-06-07 12:51:26 +0100868 list_for_each_entry_safe_continue(w, n, list,
869 power_list);
Mark Brown163cac02009-06-07 10:12:52 +0100870
Mark Brownb22ead22009-06-07 12:51:26 +0100871 if (event == SND_SOC_DAPM_STREAM_START)
Mark Brown163cac02009-06-07 10:12:52 +0100872 ret = w->event(w,
873 NULL, SND_SOC_DAPM_PRE_PMU);
Mark Brownb22ead22009-06-07 12:51:26 +0100874 else if (event == SND_SOC_DAPM_STREAM_STOP)
Mark Brown163cac02009-06-07 10:12:52 +0100875 ret = w->event(w,
876 NULL, SND_SOC_DAPM_PRE_PMD);
Mark Brown163cac02009-06-07 10:12:52 +0100877 break;
878
879 case snd_soc_dapm_post:
880 if (!w->event)
Mark Brownb22ead22009-06-07 12:51:26 +0100881 list_for_each_entry_safe_continue(w, n, list,
882 power_list);
Mark Brown163cac02009-06-07 10:12:52 +0100883
Mark Brownb22ead22009-06-07 12:51:26 +0100884 if (event == SND_SOC_DAPM_STREAM_START)
Mark Brown163cac02009-06-07 10:12:52 +0100885 ret = w->event(w,
886 NULL, SND_SOC_DAPM_POST_PMU);
Mark Brownb22ead22009-06-07 12:51:26 +0100887 else if (event == SND_SOC_DAPM_STREAM_STOP)
Mark Brown163cac02009-06-07 10:12:52 +0100888 ret = w->event(w,
889 NULL, SND_SOC_DAPM_POST_PMD);
Mark Brownb22ead22009-06-07 12:51:26 +0100890 break;
891
892 case snd_soc_dapm_input:
893 case snd_soc_dapm_output:
894 case snd_soc_dapm_hp:
895 case snd_soc_dapm_mic:
896 case snd_soc_dapm_line:
897 case snd_soc_dapm_spk:
898 /* No register support currently */
Mark Brownb22ead22009-06-07 12:51:26 +0100899 ret = dapm_generic_apply_power(w);
Mark Brown163cac02009-06-07 10:12:52 +0100900 break;
901
902 default:
Mark Brown81628102009-06-07 13:21:24 +0100903 /* Queue it up for application */
904 cur_sort = sort[w->id];
905 cur_reg = w->reg;
906 list_move(&w->power_list, &pending);
907 break;
Mark Brown163cac02009-06-07 10:12:52 +0100908 }
Mark Brownb22ead22009-06-07 12:51:26 +0100909
910 if (ret < 0)
Jarkko Nikulaf7d41ae2010-11-09 14:40:27 +0200911 dev_err(w->dapm->dev,
912 "Failed to apply widget power: %d\n", ret);
Mark Brown163cac02009-06-07 10:12:52 +0100913 }
Mark Brownb22ead22009-06-07 12:51:26 +0100914
915 if (!list_empty(&pending))
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200916 dapm_seq_run_coalesced(dapm, &pending);
Mark Brown163cac02009-06-07 10:12:52 +0100917}
918
Mark Brown42aa3412009-03-01 19:21:10 +0000919/*
Richard Purdie2b97eab2006-10-06 18:32:18 +0200920 * Scan each dapm widget for complete audio path.
921 * A complete path is a route that has valid endpoints i.e.:-
922 *
923 * o DAC to output pin.
924 * o Input Pin to ADC.
925 * o Input pin to Output pin (bypass, sidetone)
926 * o DAC to ADC (loopback).
927 */
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200928static int dapm_power_widgets(struct snd_soc_dapm_context *dapm, int event)
Richard Purdie2b97eab2006-10-06 18:32:18 +0200929{
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200930 struct snd_soc_card *card = dapm->codec->card;
Richard Purdie2b97eab2006-10-06 18:32:18 +0200931 struct snd_soc_dapm_widget *w;
Mark Brown291f3bb2009-06-07 13:57:17 +0100932 LIST_HEAD(up_list);
933 LIST_HEAD(down_list);
Mark Brown6d3ddc82009-05-16 17:47:29 +0100934 int ret = 0;
Mark Brown38357ab2009-06-06 19:03:23 +0100935 int power;
Mark Brown452c5ea2009-05-17 21:41:23 +0100936 int sys_power = 0;
Richard Purdie2b97eab2006-10-06 18:32:18 +0200937
Mark Brown84e90932010-11-04 00:07:02 -0400938 trace_snd_soc_dapm_start(card);
939
Mark Brown6d3ddc82009-05-16 17:47:29 +0100940 /* Check which widgets we need to power and store them in
941 * lists indicating if they should be powered up or down.
942 */
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200943 list_for_each_entry(w, &dapm->widgets, list) {
Mark Brown6d3ddc82009-05-16 17:47:29 +0100944 switch (w->id) {
945 case snd_soc_dapm_pre:
Mark Brown291f3bb2009-06-07 13:57:17 +0100946 dapm_seq_insert(w, &down_list, dapm_down_seq);
Mark Brown6d3ddc82009-05-16 17:47:29 +0100947 break;
948 case snd_soc_dapm_post:
Mark Brown291f3bb2009-06-07 13:57:17 +0100949 dapm_seq_insert(w, &up_list, dapm_up_seq);
Mark Brown6d3ddc82009-05-16 17:47:29 +0100950 break;
951
952 default:
953 if (!w->power_check)
954 continue;
955
Mark Brown99497882010-05-07 20:24:05 +0100956 if (!w->force)
Mark Brown50b6bce2009-11-23 13:11:53 +0000957 power = w->power_check(w);
Mark Brown99497882010-05-07 20:24:05 +0100958 else
959 power = 1;
960 if (power)
961 sys_power = 1;
Mark Brown452c5ea2009-05-17 21:41:23 +0100962
Mark Brown6d3ddc82009-05-16 17:47:29 +0100963 if (w->power == power)
964 continue;
965
Mark Brown84e90932010-11-04 00:07:02 -0400966 trace_snd_soc_dapm_widget_power(w, power);
967
Mark Brown6d3ddc82009-05-16 17:47:29 +0100968 if (power)
Mark Brown291f3bb2009-06-07 13:57:17 +0100969 dapm_seq_insert(w, &up_list, dapm_up_seq);
Mark Brown6d3ddc82009-05-16 17:47:29 +0100970 else
Mark Brown291f3bb2009-06-07 13:57:17 +0100971 dapm_seq_insert(w, &down_list, dapm_down_seq);
Mark Brown6d3ddc82009-05-16 17:47:29 +0100972
973 w->power = power;
974 break;
975 }
Richard Purdie2b97eab2006-10-06 18:32:18 +0200976 }
977
Mark Brownb14b76a2009-08-17 11:55:38 +0100978 /* If there are no DAPM widgets then try to figure out power from the
979 * event type.
980 */
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200981 if (list_empty(&dapm->widgets)) {
Mark Brownb14b76a2009-08-17 11:55:38 +0100982 switch (event) {
983 case SND_SOC_DAPM_STREAM_START:
984 case SND_SOC_DAPM_STREAM_RESUME:
985 sys_power = 1;
986 break;
Jarkko Nikula862af8a2010-12-10 20:53:55 +0200987 case SND_SOC_DAPM_STREAM_STOP:
Jarkko Nikula0f0e2522010-12-10 20:54:49 +0200988 sys_power = !!dapm->codec->active;
Jarkko Nikula862af8a2010-12-10 20:53:55 +0200989 break;
Mark Brown50b6bce2009-11-23 13:11:53 +0000990 case SND_SOC_DAPM_STREAM_SUSPEND:
991 sys_power = 0;
992 break;
Mark Brownb14b76a2009-08-17 11:55:38 +0100993 case SND_SOC_DAPM_STREAM_NOP:
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200994 switch (dapm->bias_level) {
Mark Browna96ca332010-01-19 22:49:43 +0000995 case SND_SOC_BIAS_STANDBY:
996 case SND_SOC_BIAS_OFF:
997 sys_power = 0;
998 break;
999 default:
1000 sys_power = 1;
1001 break;
1002 }
Mark Brown50b6bce2009-11-23 13:11:53 +00001003 break;
Mark Brownb14b76a2009-08-17 11:55:38 +01001004 default:
1005 break;
1006 }
1007 }
1008
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001009 if (sys_power && dapm->bias_level == SND_SOC_BIAS_OFF) {
1010 ret = snd_soc_dapm_set_bias_level(card, dapm,
Mark Browna96ca332010-01-19 22:49:43 +00001011 SND_SOC_BIAS_STANDBY);
1012 if (ret != 0)
Jarkko Nikulaf7d41ae2010-11-09 14:40:27 +02001013 dev_err(dapm->dev,
1014 "Failed to turn on bias: %d\n", ret);
Mark Browna96ca332010-01-19 22:49:43 +00001015 }
1016
Mark Brown452c5ea2009-05-17 21:41:23 +01001017 /* If we're changing to all on or all off then prepare */
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001018 if ((sys_power && dapm->bias_level == SND_SOC_BIAS_STANDBY) ||
1019 (!sys_power && dapm->bias_level == SND_SOC_BIAS_ON)) {
1020 ret = snd_soc_dapm_set_bias_level(card, dapm, SND_SOC_BIAS_PREPARE);
Mark Brown452c5ea2009-05-17 21:41:23 +01001021 if (ret != 0)
Jarkko Nikulaf7d41ae2010-11-09 14:40:27 +02001022 dev_err(dapm->dev,
1023 "Failed to prepare bias: %d\n", ret);
Mark Brown452c5ea2009-05-17 21:41:23 +01001024 }
1025
Mark Brown6d3ddc82009-05-16 17:47:29 +01001026 /* Power down widgets first; try to avoid amplifying pops. */
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001027 dapm_seq_run(dapm, &down_list, event, dapm_down_seq);
Mark Brown6d3ddc82009-05-16 17:47:29 +01001028
1029 /* Now power up. */
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001030 dapm_seq_run(dapm, &up_list, event, dapm_up_seq);
Richard Purdie2b97eab2006-10-06 18:32:18 +02001031
Mark Brown452c5ea2009-05-17 21:41:23 +01001032 /* If we just powered the last thing off drop to standby bias */
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001033 if (dapm->bias_level == SND_SOC_BIAS_PREPARE && !sys_power) {
1034 ret = snd_soc_dapm_set_bias_level(card, dapm, SND_SOC_BIAS_STANDBY);
Mark Brown452c5ea2009-05-17 21:41:23 +01001035 if (ret != 0)
Jarkko Nikulaf7d41ae2010-11-09 14:40:27 +02001036 dev_err(dapm->dev,
1037 "Failed to apply standby bias: %d\n", ret);
Mark Brown452c5ea2009-05-17 21:41:23 +01001038 }
1039
Mark Browna96ca332010-01-19 22:49:43 +00001040 /* If we're in standby and can support bias off then do that */
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001041 if (dapm->bias_level == SND_SOC_BIAS_STANDBY &&
1042 dapm->idle_bias_off) {
1043 ret = snd_soc_dapm_set_bias_level(card, dapm, SND_SOC_BIAS_OFF);
Mark Browna96ca332010-01-19 22:49:43 +00001044 if (ret != 0)
Jarkko Nikulaf7d41ae2010-11-09 14:40:27 +02001045 dev_err(dapm->dev,
1046 "Failed to turn off bias: %d\n", ret);
Mark Browna96ca332010-01-19 22:49:43 +00001047 }
1048
Mark Brown452c5ea2009-05-17 21:41:23 +01001049 /* If we just powered up then move to active bias */
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001050 if (dapm->bias_level == SND_SOC_BIAS_PREPARE && sys_power) {
1051 ret = snd_soc_dapm_set_bias_level(card, dapm, SND_SOC_BIAS_ON);
Mark Brown452c5ea2009-05-17 21:41:23 +01001052 if (ret != 0)
Jarkko Nikulaf7d41ae2010-11-09 14:40:27 +02001053 dev_err(dapm->dev,
1054 "Failed to apply active bias: %d\n", ret);
Mark Brown452c5ea2009-05-17 21:41:23 +01001055 }
1056
Jarkko Nikulafd8d3bc2010-11-09 14:40:28 +02001057 pop_dbg(dapm->dev, card->pop_time,
1058 "DAPM sequencing finished, waiting %dms\n", card->pop_time);
Jarkko Nikula3a45b862010-11-05 20:35:21 +02001059 pop_wait(card->pop_time);
Mark Browncb507e72009-07-08 18:54:57 +01001060
Mark Brown84e90932010-11-04 00:07:02 -04001061 trace_snd_soc_dapm_done(card);
1062
Mark Brown42aa3412009-03-01 19:21:10 +00001063 return 0;
Richard Purdie2b97eab2006-10-06 18:32:18 +02001064}
1065
Mark Brown79fb9382009-08-21 16:38:13 +01001066#ifdef CONFIG_DEBUG_FS
1067static int dapm_widget_power_open_file(struct inode *inode, struct file *file)
1068{
1069 file->private_data = inode->i_private;
1070 return 0;
1071}
1072
1073static ssize_t dapm_widget_power_read_file(struct file *file,
1074 char __user *user_buf,
1075 size_t count, loff_t *ppos)
1076{
1077 struct snd_soc_dapm_widget *w = file->private_data;
1078 char *buf;
1079 int in, out;
1080 ssize_t ret;
1081 struct snd_soc_dapm_path *p = NULL;
1082
1083 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
1084 if (!buf)
1085 return -ENOMEM;
1086
1087 in = is_connected_input_ep(w);
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001088 dapm_clear_walk(w->dapm);
Mark Brown79fb9382009-08-21 16:38:13 +01001089 out = is_connected_output_ep(w);
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001090 dapm_clear_walk(w->dapm);
Mark Brown79fb9382009-08-21 16:38:13 +01001091
Mark Brownd033c362009-12-04 15:25:56 +00001092 ret = snprintf(buf, PAGE_SIZE, "%s: %s in %d out %d",
Mark Brown79fb9382009-08-21 16:38:13 +01001093 w->name, w->power ? "On" : "Off", in, out);
1094
Mark Brownd033c362009-12-04 15:25:56 +00001095 if (w->reg >= 0)
1096 ret += snprintf(buf + ret, PAGE_SIZE - ret,
1097 " - R%d(0x%x) bit %d",
1098 w->reg, w->reg, w->shift);
1099
1100 ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n");
1101
Mark Brown3eef08b2009-09-14 16:49:00 +01001102 if (w->sname)
1103 ret += snprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n",
1104 w->sname,
1105 w->active ? "active" : "inactive");
Mark Brown79fb9382009-08-21 16:38:13 +01001106
1107 list_for_each_entry(p, &w->sources, list_sink) {
Mark Brown215edda2009-09-08 18:59:05 +01001108 if (p->connected && !p->connected(w, p->sink))
1109 continue;
1110
Mark Brown79fb9382009-08-21 16:38:13 +01001111 if (p->connect)
1112 ret += snprintf(buf + ret, PAGE_SIZE - ret,
1113 " in %s %s\n",
1114 p->name ? p->name : "static",
1115 p->source->name);
1116 }
1117 list_for_each_entry(p, &w->sinks, list_source) {
Mark Brown215edda2009-09-08 18:59:05 +01001118 if (p->connected && !p->connected(w, p->sink))
1119 continue;
1120
Mark Brown79fb9382009-08-21 16:38:13 +01001121 if (p->connect)
1122 ret += snprintf(buf + ret, PAGE_SIZE - ret,
1123 " out %s %s\n",
1124 p->name ? p->name : "static",
1125 p->sink->name);
1126 }
1127
1128 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
1129
1130 kfree(buf);
1131 return ret;
1132}
1133
1134static const struct file_operations dapm_widget_power_fops = {
1135 .open = dapm_widget_power_open_file,
1136 .read = dapm_widget_power_read_file,
Arnd Bergmann6038f372010-08-15 18:52:59 +02001137 .llseek = default_llseek,
Mark Brown79fb9382009-08-21 16:38:13 +01001138};
1139
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001140void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm)
Mark Brown79fb9382009-08-21 16:38:13 +01001141{
1142 struct snd_soc_dapm_widget *w;
1143 struct dentry *d;
1144
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001145 if (!dapm->debugfs_dapm)
Mark Brown79fb9382009-08-21 16:38:13 +01001146 return;
1147
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001148 list_for_each_entry(w, &dapm->widgets, list) {
Mark Brown79fb9382009-08-21 16:38:13 +01001149 if (!w->name)
1150 continue;
1151
1152 d = debugfs_create_file(w->name, 0444,
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001153 dapm->debugfs_dapm, w,
Mark Brown79fb9382009-08-21 16:38:13 +01001154 &dapm_widget_power_fops);
1155 if (!d)
Jarkko Nikulaf7d41ae2010-11-09 14:40:27 +02001156 dev_warn(w->dapm->dev,
1157 "ASoC: Failed to create %s debugfs file\n",
1158 w->name);
Mark Brown79fb9382009-08-21 16:38:13 +01001159 }
1160}
1161#else
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001162void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm)
Mark Brown79fb9382009-08-21 16:38:13 +01001163{
1164}
1165#endif
1166
Richard Purdie2b97eab2006-10-06 18:32:18 +02001167/* test and update the power status of a mux widget */
Adrian Bunkd9c96cf2006-11-28 12:10:09 +01001168static int dapm_mux_update_power(struct snd_soc_dapm_widget *widget,
Mark Brown3a655772009-10-05 17:23:30 +01001169 struct snd_kcontrol *kcontrol, int change,
1170 int mux, struct soc_enum *e)
Richard Purdie2b97eab2006-10-06 18:32:18 +02001171{
1172 struct snd_soc_dapm_path *path;
1173 int found = 0;
1174
Peter Ujfalusieff317d2009-01-15 14:40:47 +02001175 if (widget->id != snd_soc_dapm_mux &&
1176 widget->id != snd_soc_dapm_value_mux)
Richard Purdie2b97eab2006-10-06 18:32:18 +02001177 return -ENODEV;
1178
Mark Brown3a655772009-10-05 17:23:30 +01001179 if (!change)
Richard Purdie2b97eab2006-10-06 18:32:18 +02001180 return 0;
1181
1182 /* find dapm widget path assoc with kcontrol */
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001183 list_for_each_entry(path, &widget->dapm->paths, list) {
Richard Purdie2b97eab2006-10-06 18:32:18 +02001184 if (path->kcontrol != kcontrol)
1185 continue;
1186
Richard Zhaocb01e2b2008-10-07 08:05:20 +08001187 if (!path->name || !e->texts[mux])
Richard Purdie2b97eab2006-10-06 18:32:18 +02001188 continue;
1189
1190 found = 1;
1191 /* we now need to match the string in the enum to the path */
Richard Zhaocb01e2b2008-10-07 08:05:20 +08001192 if (!(strcmp(path->name, e->texts[mux])))
Richard Purdie2b97eab2006-10-06 18:32:18 +02001193 path->connect = 1; /* new connection */
1194 else
1195 path->connect = 0; /* old connection must be powered down */
1196 }
1197
Mark Brownb91b8fa2010-01-20 18:18:35 +00001198 if (found)
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001199 dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP);
Richard Purdie2b97eab2006-10-06 18:32:18 +02001200
1201 return 0;
1202}
Richard Purdie2b97eab2006-10-06 18:32:18 +02001203
Milan plzik1b075e32008-01-10 14:39:46 +01001204/* test and update the power status of a mixer or switch widget */
Adrian Bunkd9c96cf2006-11-28 12:10:09 +01001205static int dapm_mixer_update_power(struct snd_soc_dapm_widget *widget,
Mark Brown283375c2009-12-07 18:09:03 +00001206 struct snd_kcontrol *kcontrol, int connect)
Richard Purdie2b97eab2006-10-06 18:32:18 +02001207{
1208 struct snd_soc_dapm_path *path;
1209 int found = 0;
1210
Milan plzik1b075e32008-01-10 14:39:46 +01001211 if (widget->id != snd_soc_dapm_mixer &&
Ian Moltonca9c1aa2009-01-06 20:11:51 +00001212 widget->id != snd_soc_dapm_mixer_named_ctl &&
Milan plzik1b075e32008-01-10 14:39:46 +01001213 widget->id != snd_soc_dapm_switch)
Richard Purdie2b97eab2006-10-06 18:32:18 +02001214 return -ENODEV;
1215
Richard Purdie2b97eab2006-10-06 18:32:18 +02001216 /* find dapm widget path assoc with kcontrol */
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001217 list_for_each_entry(path, &widget->dapm->paths, list) {
Richard Purdie2b97eab2006-10-06 18:32:18 +02001218 if (path->kcontrol != kcontrol)
1219 continue;
1220
1221 /* found, now check type */
1222 found = 1;
Mark Brown283375c2009-12-07 18:09:03 +00001223 path->connect = connect;
Richard Purdie2b97eab2006-10-06 18:32:18 +02001224 break;
1225 }
1226
Mark Brownb91b8fa2010-01-20 18:18:35 +00001227 if (found)
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001228 dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP);
Richard Purdie2b97eab2006-10-06 18:32:18 +02001229
1230 return 0;
1231}
Richard Purdie2b97eab2006-10-06 18:32:18 +02001232
1233/* show dapm widget status in sys fs */
1234static ssize_t dapm_widget_show(struct device *dev,
1235 struct device_attribute *attr, char *buf)
1236{
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +00001237 struct snd_soc_pcm_runtime *rtd =
1238 container_of(dev, struct snd_soc_pcm_runtime, dev);
1239 struct snd_soc_codec *codec =rtd->codec;
Richard Purdie2b97eab2006-10-06 18:32:18 +02001240 struct snd_soc_dapm_widget *w;
1241 int count = 0;
1242 char *state = "not set";
1243
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001244 list_for_each_entry(w, &codec->dapm.widgets, list) {
Richard Purdie2b97eab2006-10-06 18:32:18 +02001245
1246 /* only display widgets that burnm power */
1247 switch (w->id) {
1248 case snd_soc_dapm_hp:
1249 case snd_soc_dapm_mic:
1250 case snd_soc_dapm_spk:
1251 case snd_soc_dapm_line:
1252 case snd_soc_dapm_micbias:
1253 case snd_soc_dapm_dac:
1254 case snd_soc_dapm_adc:
1255 case snd_soc_dapm_pga:
Olaya, Margaritad88429a2010-12-10 21:11:44 -06001256 case snd_soc_dapm_out_drv:
Richard Purdie2b97eab2006-10-06 18:32:18 +02001257 case snd_soc_dapm_mixer:
Ian Moltonca9c1aa2009-01-06 20:11:51 +00001258 case snd_soc_dapm_mixer_named_ctl:
Mark Brown246d0a12009-04-22 18:24:55 +01001259 case snd_soc_dapm_supply:
Richard Purdie2b97eab2006-10-06 18:32:18 +02001260 if (w->name)
1261 count += sprintf(buf + count, "%s: %s\n",
1262 w->name, w->power ? "On":"Off");
1263 break;
1264 default:
1265 break;
1266 }
1267 }
1268
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001269 switch (codec->dapm.bias_level) {
Mark Brown0be98982008-05-19 12:31:28 +02001270 case SND_SOC_BIAS_ON:
1271 state = "On";
Richard Purdie2b97eab2006-10-06 18:32:18 +02001272 break;
Mark Brown0be98982008-05-19 12:31:28 +02001273 case SND_SOC_BIAS_PREPARE:
1274 state = "Prepare";
Richard Purdie2b97eab2006-10-06 18:32:18 +02001275 break;
Mark Brown0be98982008-05-19 12:31:28 +02001276 case SND_SOC_BIAS_STANDBY:
1277 state = "Standby";
Richard Purdie2b97eab2006-10-06 18:32:18 +02001278 break;
Mark Brown0be98982008-05-19 12:31:28 +02001279 case SND_SOC_BIAS_OFF:
1280 state = "Off";
Richard Purdie2b97eab2006-10-06 18:32:18 +02001281 break;
1282 }
1283 count += sprintf(buf + count, "PM State: %s\n", state);
1284
1285 return count;
1286}
1287
1288static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL);
1289
1290int snd_soc_dapm_sys_add(struct device *dev)
1291{
Troy Kisky12ef1932008-10-13 17:42:14 -07001292 return device_create_file(dev, &dev_attr_dapm_widget);
Richard Purdie2b97eab2006-10-06 18:32:18 +02001293}
1294
1295static void snd_soc_dapm_sys_remove(struct device *dev)
1296{
Mark Brownaef90842009-05-16 17:53:16 +01001297 device_remove_file(dev, &dev_attr_dapm_widget);
Richard Purdie2b97eab2006-10-06 18:32:18 +02001298}
1299
1300/* free all dapm widgets and resources */
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001301static void dapm_free_widgets(struct snd_soc_dapm_context *dapm)
Richard Purdie2b97eab2006-10-06 18:32:18 +02001302{
1303 struct snd_soc_dapm_widget *w, *next_w;
1304 struct snd_soc_dapm_path *p, *next_p;
1305
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001306 list_for_each_entry_safe(w, next_w, &dapm->widgets, list) {
Richard Purdie2b97eab2006-10-06 18:32:18 +02001307 list_del(&w->list);
Jarkko Nikulaead9b912010-11-13 20:40:44 +02001308 kfree(w->name);
Richard Purdie2b97eab2006-10-06 18:32:18 +02001309 kfree(w);
1310 }
1311
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001312 list_for_each_entry_safe(p, next_p, &dapm->paths, list) {
Richard Purdie2b97eab2006-10-06 18:32:18 +02001313 list_del(&p->list);
1314 kfree(p->long_name);
1315 kfree(p);
1316 }
1317}
1318
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001319static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm,
Mark Brown16499232009-01-07 18:25:13 +00001320 const char *pin, int status)
Liam Girdwooda5302182008-07-07 13:35:17 +01001321{
1322 struct snd_soc_dapm_widget *w;
1323
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001324 list_for_each_entry(w, &dapm->widgets, list) {
Liam Girdwooda5302182008-07-07 13:35:17 +01001325 if (!strcmp(w->name, pin)) {
Jarkko Nikulaf7d41ae2010-11-09 14:40:27 +02001326 dev_dbg(w->dapm->dev, "dapm: pin %s = %d\n",
1327 pin, status);
Liam Girdwooda5302182008-07-07 13:35:17 +01001328 w->connected = status;
Mark Brown5b9e87c2010-03-22 13:36:13 +00001329 /* Allow disabling of forced pins */
1330 if (status == 0)
1331 w->force = 0;
Liam Girdwooda5302182008-07-07 13:35:17 +01001332 return 0;
1333 }
1334 }
1335
Jarkko Nikulaf7d41ae2010-11-09 14:40:27 +02001336 dev_err(dapm->dev, "dapm: unknown pin %s\n", pin);
Liam Girdwooda5302182008-07-07 13:35:17 +01001337 return -EINVAL;
1338}
1339
Richard Purdie2b97eab2006-10-06 18:32:18 +02001340/**
Liam Girdwooda5302182008-07-07 13:35:17 +01001341 * snd_soc_dapm_sync - scan and power dapm paths
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001342 * @dapm: DAPM context
Richard Purdie2b97eab2006-10-06 18:32:18 +02001343 *
1344 * Walks all dapm audio paths and powers widgets according to their
1345 * stream or path usage.
1346 *
1347 * Returns 0 for success.
1348 */
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001349int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm)
Richard Purdie2b97eab2006-10-06 18:32:18 +02001350{
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001351 return dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP);
Richard Purdie2b97eab2006-10-06 18:32:18 +02001352}
Liam Girdwooda5302182008-07-07 13:35:17 +01001353EXPORT_SYMBOL_GPL(snd_soc_dapm_sync);
Richard Purdie2b97eab2006-10-06 18:32:18 +02001354
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001355static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm,
Mark Brown215edda2009-09-08 18:59:05 +01001356 const struct snd_soc_dapm_route *route)
Richard Purdie2b97eab2006-10-06 18:32:18 +02001357{
1358 struct snd_soc_dapm_path *path;
1359 struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w;
Jarkko Nikulaead9b912010-11-13 20:40:44 +02001360 const char *sink;
Mark Brown215edda2009-09-08 18:59:05 +01001361 const char *control = route->control;
Jarkko Nikulaead9b912010-11-13 20:40:44 +02001362 const char *source;
1363 char prefixed_sink[80];
1364 char prefixed_source[80];
Richard Purdie2b97eab2006-10-06 18:32:18 +02001365 int ret = 0;
1366
Jarkko Nikulaead9b912010-11-13 20:40:44 +02001367 if (dapm->codec->name_prefix) {
1368 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
1369 dapm->codec->name_prefix, route->sink);
1370 sink = prefixed_sink;
1371 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
1372 dapm->codec->name_prefix, route->source);
1373 source = prefixed_source;
1374 } else {
1375 sink = route->sink;
1376 source = route->source;
1377 }
1378
Richard Purdie2b97eab2006-10-06 18:32:18 +02001379 /* find src and dest widgets */
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001380 list_for_each_entry(w, &dapm->widgets, list) {
Richard Purdie2b97eab2006-10-06 18:32:18 +02001381
1382 if (!wsink && !(strcmp(w->name, sink))) {
1383 wsink = w;
1384 continue;
1385 }
1386 if (!wsource && !(strcmp(w->name, source))) {
1387 wsource = w;
1388 }
1389 }
1390
1391 if (wsource == NULL || wsink == NULL)
1392 return -ENODEV;
1393
1394 path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL);
1395 if (!path)
1396 return -ENOMEM;
1397
1398 path->source = wsource;
1399 path->sink = wsink;
Mark Brown215edda2009-09-08 18:59:05 +01001400 path->connected = route->connected;
Richard Purdie2b97eab2006-10-06 18:32:18 +02001401 INIT_LIST_HEAD(&path->list);
1402 INIT_LIST_HEAD(&path->list_source);
1403 INIT_LIST_HEAD(&path->list_sink);
1404
1405 /* check for external widgets */
1406 if (wsink->id == snd_soc_dapm_input) {
1407 if (wsource->id == snd_soc_dapm_micbias ||
1408 wsource->id == snd_soc_dapm_mic ||
Rongrong Cao087d53a2009-07-10 20:13:30 +01001409 wsource->id == snd_soc_dapm_line ||
1410 wsource->id == snd_soc_dapm_output)
Richard Purdie2b97eab2006-10-06 18:32:18 +02001411 wsink->ext = 1;
1412 }
1413 if (wsource->id == snd_soc_dapm_output) {
1414 if (wsink->id == snd_soc_dapm_spk ||
1415 wsink->id == snd_soc_dapm_hp ||
Seth Forshee1e392212007-04-16 15:36:42 +02001416 wsink->id == snd_soc_dapm_line ||
1417 wsink->id == snd_soc_dapm_input)
Richard Purdie2b97eab2006-10-06 18:32:18 +02001418 wsource->ext = 1;
1419 }
1420
1421 /* connect static paths */
1422 if (control == NULL) {
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001423 list_add(&path->list, &dapm->paths);
Richard Purdie2b97eab2006-10-06 18:32:18 +02001424 list_add(&path->list_sink, &wsink->sources);
1425 list_add(&path->list_source, &wsource->sinks);
1426 path->connect = 1;
1427 return 0;
1428 }
1429
1430 /* connect dynamic paths */
1431 switch(wsink->id) {
1432 case snd_soc_dapm_adc:
1433 case snd_soc_dapm_dac:
1434 case snd_soc_dapm_pga:
Olaya, Margaritad88429a2010-12-10 21:11:44 -06001435 case snd_soc_dapm_out_drv:
Richard Purdie2b97eab2006-10-06 18:32:18 +02001436 case snd_soc_dapm_input:
1437 case snd_soc_dapm_output:
1438 case snd_soc_dapm_micbias:
1439 case snd_soc_dapm_vmid:
1440 case snd_soc_dapm_pre:
1441 case snd_soc_dapm_post:
Mark Brown246d0a12009-04-22 18:24:55 +01001442 case snd_soc_dapm_supply:
Mark Brown010ff262009-08-17 17:39:22 +01001443 case snd_soc_dapm_aif_in:
1444 case snd_soc_dapm_aif_out:
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001445 list_add(&path->list, &dapm->paths);
Richard Purdie2b97eab2006-10-06 18:32:18 +02001446 list_add(&path->list_sink, &wsink->sources);
1447 list_add(&path->list_source, &wsource->sinks);
1448 path->connect = 1;
1449 return 0;
1450 case snd_soc_dapm_mux:
Peter Ujfalusi74155552009-01-08 13:34:29 +02001451 case snd_soc_dapm_value_mux:
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001452 ret = dapm_connect_mux(dapm, wsource, wsink, path, control,
Richard Purdie2b97eab2006-10-06 18:32:18 +02001453 &wsink->kcontrols[0]);
1454 if (ret != 0)
1455 goto err;
1456 break;
1457 case snd_soc_dapm_switch:
1458 case snd_soc_dapm_mixer:
Ian Moltonca9c1aa2009-01-06 20:11:51 +00001459 case snd_soc_dapm_mixer_named_ctl:
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001460 ret = dapm_connect_mixer(dapm, wsource, wsink, path, control);
Richard Purdie2b97eab2006-10-06 18:32:18 +02001461 if (ret != 0)
1462 goto err;
1463 break;
1464 case snd_soc_dapm_hp:
1465 case snd_soc_dapm_mic:
1466 case snd_soc_dapm_line:
1467 case snd_soc_dapm_spk:
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001468 list_add(&path->list, &dapm->paths);
Richard Purdie2b97eab2006-10-06 18:32:18 +02001469 list_add(&path->list_sink, &wsink->sources);
1470 list_add(&path->list_source, &wsource->sinks);
1471 path->connect = 0;
1472 return 0;
1473 }
1474 return 0;
1475
1476err:
Jarkko Nikulaf7d41ae2010-11-09 14:40:27 +02001477 dev_warn(dapm->dev, "asoc: no dapm match for %s --> %s --> %s\n",
1478 source, control, sink);
Richard Purdie2b97eab2006-10-06 18:32:18 +02001479 kfree(path);
1480 return ret;
1481}
Mark Brown105f1c22008-05-13 14:52:19 +02001482
1483/**
Mark Brown105f1c22008-05-13 14:52:19 +02001484 * snd_soc_dapm_add_routes - Add routes between DAPM widgets
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001485 * @dapm: DAPM context
Mark Brown105f1c22008-05-13 14:52:19 +02001486 * @route: audio routes
1487 * @num: number of routes
1488 *
1489 * Connects 2 dapm widgets together via a named audio path. The sink is
1490 * the widget receiving the audio signal, whilst the source is the sender
1491 * of the audio signal.
1492 *
1493 * Returns 0 for success else error. On error all resources can be freed
1494 * with a call to snd_soc_card_free().
1495 */
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001496int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm,
Mark Brown105f1c22008-05-13 14:52:19 +02001497 const struct snd_soc_dapm_route *route, int num)
1498{
1499 int i, ret;
1500
1501 for (i = 0; i < num; i++) {
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001502 ret = snd_soc_dapm_add_route(dapm, route);
Mark Brown105f1c22008-05-13 14:52:19 +02001503 if (ret < 0) {
Jarkko Nikulaf7d41ae2010-11-09 14:40:27 +02001504 dev_err(dapm->dev, "Failed to add route %s->%s\n",
1505 route->source, route->sink);
Mark Brown105f1c22008-05-13 14:52:19 +02001506 return ret;
1507 }
1508 route++;
1509 }
1510
1511 return 0;
1512}
1513EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes);
1514
1515/**
Richard Purdie2b97eab2006-10-06 18:32:18 +02001516 * snd_soc_dapm_new_widgets - add new dapm widgets
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001517 * @dapm: DAPM context
Richard Purdie2b97eab2006-10-06 18:32:18 +02001518 *
1519 * Checks the codec for any new dapm widgets and creates them if found.
1520 *
1521 * Returns 0 for success.
1522 */
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001523int snd_soc_dapm_new_widgets(struct snd_soc_dapm_context *dapm)
Richard Purdie2b97eab2006-10-06 18:32:18 +02001524{
1525 struct snd_soc_dapm_widget *w;
1526
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001527 list_for_each_entry(w, &dapm->widgets, list)
Richard Purdie2b97eab2006-10-06 18:32:18 +02001528 {
1529 if (w->new)
1530 continue;
1531
1532 switch(w->id) {
1533 case snd_soc_dapm_switch:
1534 case snd_soc_dapm_mixer:
Ian Moltonca9c1aa2009-01-06 20:11:51 +00001535 case snd_soc_dapm_mixer_named_ctl:
Mark Brownb75576d2009-04-20 17:56:13 +01001536 w->power_check = dapm_generic_check_power;
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001537 dapm_new_mixer(dapm, w);
Richard Purdie2b97eab2006-10-06 18:32:18 +02001538 break;
1539 case snd_soc_dapm_mux:
Peter Ujfalusi2e72f8e2009-01-05 09:54:57 +02001540 case snd_soc_dapm_value_mux:
Mark Brownb75576d2009-04-20 17:56:13 +01001541 w->power_check = dapm_generic_check_power;
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001542 dapm_new_mux(dapm, w);
Richard Purdie2b97eab2006-10-06 18:32:18 +02001543 break;
1544 case snd_soc_dapm_adc:
Mark Brown010ff262009-08-17 17:39:22 +01001545 case snd_soc_dapm_aif_out:
Mark Brownb75576d2009-04-20 17:56:13 +01001546 w->power_check = dapm_adc_check_power;
1547 break;
Richard Purdie2b97eab2006-10-06 18:32:18 +02001548 case snd_soc_dapm_dac:
Mark Brown010ff262009-08-17 17:39:22 +01001549 case snd_soc_dapm_aif_in:
Mark Brownb75576d2009-04-20 17:56:13 +01001550 w->power_check = dapm_dac_check_power;
1551 break;
Richard Purdie2b97eab2006-10-06 18:32:18 +02001552 case snd_soc_dapm_pga:
Olaya, Margaritad88429a2010-12-10 21:11:44 -06001553 case snd_soc_dapm_out_drv:
Mark Brownb75576d2009-04-20 17:56:13 +01001554 w->power_check = dapm_generic_check_power;
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001555 dapm_new_pga(dapm, w);
Richard Purdie2b97eab2006-10-06 18:32:18 +02001556 break;
1557 case snd_soc_dapm_input:
1558 case snd_soc_dapm_output:
1559 case snd_soc_dapm_micbias:
1560 case snd_soc_dapm_spk:
1561 case snd_soc_dapm_hp:
1562 case snd_soc_dapm_mic:
1563 case snd_soc_dapm_line:
Mark Brownb75576d2009-04-20 17:56:13 +01001564 w->power_check = dapm_generic_check_power;
1565 break;
Mark Brown246d0a12009-04-22 18:24:55 +01001566 case snd_soc_dapm_supply:
1567 w->power_check = dapm_supply_check_power;
Richard Purdie2b97eab2006-10-06 18:32:18 +02001568 case snd_soc_dapm_vmid:
1569 case snd_soc_dapm_pre:
1570 case snd_soc_dapm_post:
1571 break;
1572 }
1573 w->new = 1;
1574 }
1575
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001576 dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP);
Richard Purdie2b97eab2006-10-06 18:32:18 +02001577 return 0;
1578}
1579EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets);
1580
1581/**
1582 * snd_soc_dapm_get_volsw - dapm mixer get callback
1583 * @kcontrol: mixer control
Mark Brownac11a2b2009-01-01 12:18:17 +00001584 * @ucontrol: control element information
Richard Purdie2b97eab2006-10-06 18:32:18 +02001585 *
1586 * Callback to get the value of a dapm mixer control.
1587 *
1588 * Returns 0 for success.
1589 */
1590int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol,
1591 struct snd_ctl_elem_value *ucontrol)
1592{
1593 struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol);
Jon Smirl4eaa9812008-07-29 11:42:26 +01001594 struct soc_mixer_control *mc =
1595 (struct soc_mixer_control *)kcontrol->private_value;
Jon Smirl815ecf8d2008-07-29 10:22:24 -04001596 unsigned int reg = mc->reg;
1597 unsigned int shift = mc->shift;
1598 unsigned int rshift = mc->rshift;
Jon Smirl4eaa9812008-07-29 11:42:26 +01001599 int max = mc->max;
Jon Smirl815ecf8d2008-07-29 10:22:24 -04001600 unsigned int invert = mc->invert;
1601 unsigned int mask = (1 << fls(max)) - 1;
Richard Purdie2b97eab2006-10-06 18:32:18 +02001602
Richard Purdie2b97eab2006-10-06 18:32:18 +02001603 ucontrol->value.integer.value[0] =
1604 (snd_soc_read(widget->codec, reg) >> shift) & mask;
1605 if (shift != rshift)
1606 ucontrol->value.integer.value[1] =
1607 (snd_soc_read(widget->codec, reg) >> rshift) & mask;
1608 if (invert) {
1609 ucontrol->value.integer.value[0] =
Philipp Zabela7a4ac82008-01-10 14:37:42 +01001610 max - ucontrol->value.integer.value[0];
Richard Purdie2b97eab2006-10-06 18:32:18 +02001611 if (shift != rshift)
1612 ucontrol->value.integer.value[1] =
Philipp Zabela7a4ac82008-01-10 14:37:42 +01001613 max - ucontrol->value.integer.value[1];
Richard Purdie2b97eab2006-10-06 18:32:18 +02001614 }
1615
1616 return 0;
1617}
1618EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw);
1619
1620/**
1621 * snd_soc_dapm_put_volsw - dapm mixer set callback
1622 * @kcontrol: mixer control
Mark Brownac11a2b2009-01-01 12:18:17 +00001623 * @ucontrol: control element information
Richard Purdie2b97eab2006-10-06 18:32:18 +02001624 *
1625 * Callback to set the value of a dapm mixer control.
1626 *
1627 * Returns 0 for success.
1628 */
1629int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol,
1630 struct snd_ctl_elem_value *ucontrol)
1631{
1632 struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol);
Jon Smirl4eaa9812008-07-29 11:42:26 +01001633 struct soc_mixer_control *mc =
1634 (struct soc_mixer_control *)kcontrol->private_value;
Jon Smirl815ecf8d2008-07-29 10:22:24 -04001635 unsigned int reg = mc->reg;
1636 unsigned int shift = mc->shift;
1637 unsigned int rshift = mc->rshift;
Jon Smirl4eaa9812008-07-29 11:42:26 +01001638 int max = mc->max;
Jon Smirl815ecf8d2008-07-29 10:22:24 -04001639 unsigned int mask = (1 << fls(max)) - 1;
1640 unsigned int invert = mc->invert;
Daniel Ribeiro46f58222009-06-07 02:49:11 -03001641 unsigned int val, val2, val_mask;
Mark Brown283375c2009-12-07 18:09:03 +00001642 int connect;
Richard Purdie2b97eab2006-10-06 18:32:18 +02001643 int ret;
1644
1645 val = (ucontrol->value.integer.value[0] & mask);
1646
1647 if (invert)
Philipp Zabela7a4ac82008-01-10 14:37:42 +01001648 val = max - val;
Richard Purdie2b97eab2006-10-06 18:32:18 +02001649 val_mask = mask << shift;
1650 val = val << shift;
1651 if (shift != rshift) {
1652 val2 = (ucontrol->value.integer.value[1] & mask);
1653 if (invert)
Philipp Zabela7a4ac82008-01-10 14:37:42 +01001654 val2 = max - val2;
Richard Purdie2b97eab2006-10-06 18:32:18 +02001655 val_mask |= mask << rshift;
1656 val |= val2 << rshift;
1657 }
1658
1659 mutex_lock(&widget->codec->mutex);
1660 widget->value = val;
1661
Mark Brown283375c2009-12-07 18:09:03 +00001662 if (snd_soc_test_bits(widget->codec, reg, val_mask, val)) {
1663 if (val)
1664 /* new connection */
1665 connect = invert ? 0:1;
1666 else
1667 /* old connection must be powered down */
1668 connect = invert ? 1:0;
1669
1670 dapm_mixer_update_power(widget, kcontrol, connect);
1671 }
1672
Richard Purdie2b97eab2006-10-06 18:32:18 +02001673 if (widget->event) {
1674 if (widget->event_flags & SND_SOC_DAPM_PRE_REG) {
Laim Girdwood9af6d952008-01-10 14:41:02 +01001675 ret = widget->event(widget, kcontrol,
1676 SND_SOC_DAPM_PRE_REG);
1677 if (ret < 0) {
1678 ret = 1;
Richard Purdie2b97eab2006-10-06 18:32:18 +02001679 goto out;
Laim Girdwood9af6d952008-01-10 14:41:02 +01001680 }
Richard Purdie2b97eab2006-10-06 18:32:18 +02001681 }
1682 ret = snd_soc_update_bits(widget->codec, reg, val_mask, val);
1683 if (widget->event_flags & SND_SOC_DAPM_POST_REG)
Laim Girdwood9af6d952008-01-10 14:41:02 +01001684 ret = widget->event(widget, kcontrol,
1685 SND_SOC_DAPM_POST_REG);
Richard Purdie2b97eab2006-10-06 18:32:18 +02001686 } else
1687 ret = snd_soc_update_bits(widget->codec, reg, val_mask, val);
1688
1689out:
1690 mutex_unlock(&widget->codec->mutex);
1691 return ret;
1692}
1693EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw);
1694
1695/**
1696 * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback
1697 * @kcontrol: mixer control
Mark Brownac11a2b2009-01-01 12:18:17 +00001698 * @ucontrol: control element information
Richard Purdie2b97eab2006-10-06 18:32:18 +02001699 *
1700 * Callback to get the value of a dapm enumerated double mixer control.
1701 *
1702 * Returns 0 for success.
1703 */
1704int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol,
1705 struct snd_ctl_elem_value *ucontrol)
1706{
1707 struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol);
1708 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
Daniel Ribeiro46f58222009-06-07 02:49:11 -03001709 unsigned int val, bitmask;
Richard Purdie2b97eab2006-10-06 18:32:18 +02001710
Jon Smirlf8ba0b72008-07-29 11:42:27 +01001711 for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
Richard Purdie2b97eab2006-10-06 18:32:18 +02001712 ;
1713 val = snd_soc_read(widget->codec, e->reg);
1714 ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1);
1715 if (e->shift_l != e->shift_r)
1716 ucontrol->value.enumerated.item[1] =
1717 (val >> e->shift_r) & (bitmask - 1);
1718
1719 return 0;
1720}
1721EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double);
1722
1723/**
1724 * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback
1725 * @kcontrol: mixer control
Mark Brownac11a2b2009-01-01 12:18:17 +00001726 * @ucontrol: control element information
Richard Purdie2b97eab2006-10-06 18:32:18 +02001727 *
1728 * Callback to set the value of a dapm enumerated double mixer control.
1729 *
1730 * Returns 0 for success.
1731 */
1732int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol,
1733 struct snd_ctl_elem_value *ucontrol)
1734{
1735 struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol);
1736 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
Mark Brown3a655772009-10-05 17:23:30 +01001737 unsigned int val, mux, change;
Daniel Ribeiro46f58222009-06-07 02:49:11 -03001738 unsigned int mask, bitmask;
Richard Purdie2b97eab2006-10-06 18:32:18 +02001739 int ret = 0;
1740
Jon Smirlf8ba0b72008-07-29 11:42:27 +01001741 for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
Richard Purdie2b97eab2006-10-06 18:32:18 +02001742 ;
Jon Smirlf8ba0b72008-07-29 11:42:27 +01001743 if (ucontrol->value.enumerated.item[0] > e->max - 1)
Richard Purdie2b97eab2006-10-06 18:32:18 +02001744 return -EINVAL;
1745 mux = ucontrol->value.enumerated.item[0];
1746 val = mux << e->shift_l;
1747 mask = (bitmask - 1) << e->shift_l;
1748 if (e->shift_l != e->shift_r) {
Jon Smirlf8ba0b72008-07-29 11:42:27 +01001749 if (ucontrol->value.enumerated.item[1] > e->max - 1)
Richard Purdie2b97eab2006-10-06 18:32:18 +02001750 return -EINVAL;
1751 val |= ucontrol->value.enumerated.item[1] << e->shift_r;
1752 mask |= (bitmask - 1) << e->shift_r;
1753 }
1754
1755 mutex_lock(&widget->codec->mutex);
1756 widget->value = val;
Mark Brown3a655772009-10-05 17:23:30 +01001757 change = snd_soc_test_bits(widget->codec, e->reg, mask, val);
1758 dapm_mux_update_power(widget, kcontrol, change, mux, e);
Mark Brown1642e3d2009-10-05 16:24:26 +01001759
1760 if (widget->event_flags & SND_SOC_DAPM_PRE_REG) {
1761 ret = widget->event(widget,
1762 kcontrol, SND_SOC_DAPM_PRE_REG);
1763 if (ret < 0)
1764 goto out;
1765 }
1766
1767 ret = snd_soc_update_bits(widget->codec, e->reg, mask, val);
1768
1769 if (widget->event_flags & SND_SOC_DAPM_POST_REG)
1770 ret = widget->event(widget,
1771 kcontrol, SND_SOC_DAPM_POST_REG);
Richard Purdie2b97eab2006-10-06 18:32:18 +02001772
1773out:
1774 mutex_unlock(&widget->codec->mutex);
1775 return ret;
1776}
1777EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double);
1778
1779/**
Mark Brownd2b247a2009-10-06 15:21:04 +01001780 * snd_soc_dapm_get_enum_virt - Get virtual DAPM mux
1781 * @kcontrol: mixer control
1782 * @ucontrol: control element information
1783 *
1784 * Returns 0 for success.
1785 */
1786int snd_soc_dapm_get_enum_virt(struct snd_kcontrol *kcontrol,
1787 struct snd_ctl_elem_value *ucontrol)
1788{
1789 struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol);
1790
1791 ucontrol->value.enumerated.item[0] = widget->value;
1792
1793 return 0;
1794}
1795EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_virt);
1796
1797/**
1798 * snd_soc_dapm_put_enum_virt - Set virtual DAPM mux
1799 * @kcontrol: mixer control
1800 * @ucontrol: control element information
1801 *
1802 * Returns 0 for success.
1803 */
1804int snd_soc_dapm_put_enum_virt(struct snd_kcontrol *kcontrol,
1805 struct snd_ctl_elem_value *ucontrol)
1806{
1807 struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol);
1808 struct soc_enum *e =
1809 (struct soc_enum *)kcontrol->private_value;
1810 int change;
1811 int ret = 0;
1812
1813 if (ucontrol->value.enumerated.item[0] >= e->max)
1814 return -EINVAL;
1815
1816 mutex_lock(&widget->codec->mutex);
1817
1818 change = widget->value != ucontrol->value.enumerated.item[0];
1819 widget->value = ucontrol->value.enumerated.item[0];
1820 dapm_mux_update_power(widget, kcontrol, change, widget->value, e);
1821
1822 mutex_unlock(&widget->codec->mutex);
1823 return ret;
1824}
1825EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt);
1826
1827/**
Peter Ujfalusi2e72f8e2009-01-05 09:54:57 +02001828 * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get
1829 * callback
1830 * @kcontrol: mixer control
1831 * @ucontrol: control element information
1832 *
1833 * Callback to get the value of a dapm semi enumerated double mixer control.
1834 *
1835 * Semi enumerated mixer: the enumerated items are referred as values. Can be
1836 * used for handling bitfield coded enumeration for example.
1837 *
1838 * Returns 0 for success.
1839 */
1840int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol *kcontrol,
1841 struct snd_ctl_elem_value *ucontrol)
1842{
1843 struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol);
Peter Ujfalusi74155552009-01-08 13:34:29 +02001844 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
Daniel Ribeiro46f58222009-06-07 02:49:11 -03001845 unsigned int reg_val, val, mux;
Peter Ujfalusi2e72f8e2009-01-05 09:54:57 +02001846
1847 reg_val = snd_soc_read(widget->codec, e->reg);
1848 val = (reg_val >> e->shift_l) & e->mask;
1849 for (mux = 0; mux < e->max; mux++) {
1850 if (val == e->values[mux])
1851 break;
1852 }
1853 ucontrol->value.enumerated.item[0] = mux;
1854 if (e->shift_l != e->shift_r) {
1855 val = (reg_val >> e->shift_r) & e->mask;
1856 for (mux = 0; mux < e->max; mux++) {
1857 if (val == e->values[mux])
1858 break;
1859 }
1860 ucontrol->value.enumerated.item[1] = mux;
1861 }
1862
1863 return 0;
1864}
1865EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double);
1866
1867/**
1868 * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set
1869 * callback
1870 * @kcontrol: mixer control
1871 * @ucontrol: control element information
1872 *
1873 * Callback to set the value of a dapm semi enumerated double mixer control.
1874 *
1875 * Semi enumerated mixer: the enumerated items are referred as values. Can be
1876 * used for handling bitfield coded enumeration for example.
1877 *
1878 * Returns 0 for success.
1879 */
1880int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol,
1881 struct snd_ctl_elem_value *ucontrol)
1882{
1883 struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol);
Peter Ujfalusi74155552009-01-08 13:34:29 +02001884 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
Mark Brown3a655772009-10-05 17:23:30 +01001885 unsigned int val, mux, change;
Daniel Ribeiro46f58222009-06-07 02:49:11 -03001886 unsigned int mask;
Peter Ujfalusi2e72f8e2009-01-05 09:54:57 +02001887 int ret = 0;
1888
1889 if (ucontrol->value.enumerated.item[0] > e->max - 1)
1890 return -EINVAL;
1891 mux = ucontrol->value.enumerated.item[0];
1892 val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l;
1893 mask = e->mask << e->shift_l;
1894 if (e->shift_l != e->shift_r) {
1895 if (ucontrol->value.enumerated.item[1] > e->max - 1)
1896 return -EINVAL;
1897 val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r;
1898 mask |= e->mask << e->shift_r;
1899 }
1900
1901 mutex_lock(&widget->codec->mutex);
1902 widget->value = val;
Mark Brown3a655772009-10-05 17:23:30 +01001903 change = snd_soc_test_bits(widget->codec, e->reg, mask, val);
1904 dapm_mux_update_power(widget, kcontrol, change, mux, e);
Mark Brown1642e3d2009-10-05 16:24:26 +01001905
1906 if (widget->event_flags & SND_SOC_DAPM_PRE_REG) {
1907 ret = widget->event(widget,
1908 kcontrol, SND_SOC_DAPM_PRE_REG);
1909 if (ret < 0)
1910 goto out;
1911 }
1912
1913 ret = snd_soc_update_bits(widget->codec, e->reg, mask, val);
1914
1915 if (widget->event_flags & SND_SOC_DAPM_POST_REG)
1916 ret = widget->event(widget,
1917 kcontrol, SND_SOC_DAPM_POST_REG);
Peter Ujfalusi2e72f8e2009-01-05 09:54:57 +02001918
1919out:
1920 mutex_unlock(&widget->codec->mutex);
1921 return ret;
1922}
1923EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double);
1924
1925/**
Mark Brown8b37dbd2009-02-28 21:14:20 +00001926 * snd_soc_dapm_info_pin_switch - Info for a pin switch
1927 *
1928 * @kcontrol: mixer control
1929 * @uinfo: control element information
1930 *
1931 * Callback to provide information about a pin switch control.
1932 */
1933int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol,
1934 struct snd_ctl_elem_info *uinfo)
1935{
1936 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1937 uinfo->count = 1;
1938 uinfo->value.integer.min = 0;
1939 uinfo->value.integer.max = 1;
1940
1941 return 0;
1942}
1943EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch);
1944
1945/**
1946 * snd_soc_dapm_get_pin_switch - Get information for a pin switch
1947 *
1948 * @kcontrol: mixer control
1949 * @ucontrol: Value
1950 */
1951int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol,
1952 struct snd_ctl_elem_value *ucontrol)
1953{
1954 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
1955 const char *pin = (const char *)kcontrol->private_value;
1956
1957 mutex_lock(&codec->mutex);
1958
1959 ucontrol->value.integer.value[0] =
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001960 snd_soc_dapm_get_pin_status(&codec->dapm, pin);
Mark Brown8b37dbd2009-02-28 21:14:20 +00001961
1962 mutex_unlock(&codec->mutex);
1963
1964 return 0;
1965}
1966EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch);
1967
1968/**
1969 * snd_soc_dapm_put_pin_switch - Set information for a pin switch
1970 *
1971 * @kcontrol: mixer control
1972 * @ucontrol: Value
1973 */
1974int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol,
1975 struct snd_ctl_elem_value *ucontrol)
1976{
1977 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
1978 const char *pin = (const char *)kcontrol->private_value;
1979
1980 mutex_lock(&codec->mutex);
1981
1982 if (ucontrol->value.integer.value[0])
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001983 snd_soc_dapm_enable_pin(&codec->dapm, pin);
Mark Brown8b37dbd2009-02-28 21:14:20 +00001984 else
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001985 snd_soc_dapm_disable_pin(&codec->dapm, pin);
Mark Brown8b37dbd2009-02-28 21:14:20 +00001986
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001987 snd_soc_dapm_sync(&codec->dapm);
Mark Brown8b37dbd2009-02-28 21:14:20 +00001988
1989 mutex_unlock(&codec->mutex);
1990
1991 return 0;
1992}
1993EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch);
1994
1995/**
Richard Purdie2b97eab2006-10-06 18:32:18 +02001996 * snd_soc_dapm_new_control - create new dapm control
Liam Girdwoodce6120c2010-11-05 15:53:46 +02001997 * @dapm: DAPM context
Richard Purdie2b97eab2006-10-06 18:32:18 +02001998 * @widget: widget template
1999 *
2000 * Creates a new dapm control based upon the template.
2001 *
2002 * Returns 0 for success else error.
2003 */
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002004int snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
Richard Purdie2b97eab2006-10-06 18:32:18 +02002005 const struct snd_soc_dapm_widget *widget)
2006{
2007 struct snd_soc_dapm_widget *w;
Jarkko Nikulaead9b912010-11-13 20:40:44 +02002008 size_t name_len;
Richard Purdie2b97eab2006-10-06 18:32:18 +02002009
2010 if ((w = dapm_cnew_widget(widget)) == NULL)
2011 return -ENOMEM;
2012
Jarkko Nikulaead9b912010-11-13 20:40:44 +02002013 name_len = strlen(widget->name) + 1;
2014 if (dapm->codec->name_prefix)
2015 name_len += 1 + strlen(dapm->codec->name_prefix);
2016 w->name = kmalloc(name_len, GFP_KERNEL);
2017 if (w->name == NULL) {
2018 kfree(w);
2019 return -ENOMEM;
2020 }
2021 if (dapm->codec->name_prefix)
2022 snprintf(w->name, name_len, "%s %s",
2023 dapm->codec->name_prefix, widget->name);
2024 else
2025 snprintf(w->name, name_len, "%s", widget->name);
2026
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002027 w->dapm = dapm;
2028 w->codec = dapm->codec;
Richard Purdie2b97eab2006-10-06 18:32:18 +02002029 INIT_LIST_HEAD(&w->sources);
2030 INIT_LIST_HEAD(&w->sinks);
2031 INIT_LIST_HEAD(&w->list);
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002032 list_add(&w->list, &dapm->widgets);
Richard Purdie2b97eab2006-10-06 18:32:18 +02002033
2034 /* machine layer set ups unconnected pins and insertions */
2035 w->connected = 1;
2036 return 0;
2037}
2038EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control);
2039
2040/**
Mark Brown4ba13272008-05-13 14:51:19 +02002041 * snd_soc_dapm_new_controls - create new dapm controls
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002042 * @dapm: DAPM context
Mark Brown4ba13272008-05-13 14:51:19 +02002043 * @widget: widget array
2044 * @num: number of widgets
2045 *
2046 * Creates new DAPM controls based upon the templates.
2047 *
2048 * Returns 0 for success else error.
2049 */
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002050int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm,
Mark Brown4ba13272008-05-13 14:51:19 +02002051 const struct snd_soc_dapm_widget *widget,
2052 int num)
2053{
2054 int i, ret;
2055
2056 for (i = 0; i < num; i++) {
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002057 ret = snd_soc_dapm_new_control(dapm, widget);
Mark Brownb8b33cb2008-12-18 11:19:30 +00002058 if (ret < 0) {
Jarkko Nikulaf7d41ae2010-11-09 14:40:27 +02002059 dev_err(dapm->dev,
2060 "ASoC: Failed to create DAPM control %s: %d\n",
2061 widget->name, ret);
Mark Brown4ba13272008-05-13 14:51:19 +02002062 return ret;
Mark Brownb8b33cb2008-12-18 11:19:30 +00002063 }
Mark Brown4ba13272008-05-13 14:51:19 +02002064 widget++;
2065 }
2066 return 0;
2067}
2068EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls);
2069
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002070static void soc_dapm_stream_event(struct snd_soc_dapm_context *dapm,
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +00002071 const char *stream, int event)
Richard Purdie2b97eab2006-10-06 18:32:18 +02002072{
2073 struct snd_soc_dapm_widget *w;
2074
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002075 list_for_each_entry(w, &dapm->widgets, list)
Richard Purdie2b97eab2006-10-06 18:32:18 +02002076 {
2077 if (!w->sname)
2078 continue;
Jarkko Nikulaf7d41ae2010-11-09 14:40:27 +02002079 dev_dbg(w->dapm->dev, "widget %s\n %s stream %s event %d\n",
2080 w->name, w->sname, stream, event);
Richard Purdie2b97eab2006-10-06 18:32:18 +02002081 if (strstr(w->sname, stream)) {
2082 switch(event) {
2083 case SND_SOC_DAPM_STREAM_START:
2084 w->active = 1;
2085 break;
2086 case SND_SOC_DAPM_STREAM_STOP:
2087 w->active = 0;
2088 break;
2089 case SND_SOC_DAPM_STREAM_SUSPEND:
Richard Purdie2b97eab2006-10-06 18:32:18 +02002090 case SND_SOC_DAPM_STREAM_RESUME:
Richard Purdie2b97eab2006-10-06 18:32:18 +02002091 case SND_SOC_DAPM_STREAM_PAUSE_PUSH:
Richard Purdie2b97eab2006-10-06 18:32:18 +02002092 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE:
2093 break;
2094 }
2095 }
2096 }
Richard Purdie2b97eab2006-10-06 18:32:18 +02002097
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002098 dapm_power_widgets(dapm, event);
2099}
2100
2101/**
2102 * snd_soc_dapm_stream_event - send a stream event to the dapm core
2103 * @rtd: PCM runtime data
2104 * @stream: stream name
2105 * @event: stream event
2106 *
2107 * Sends a stream event to the dapm core. The core then makes any
2108 * necessary widget power changes.
2109 *
2110 * Returns 0 for success else error.
2111 */
2112int snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd,
2113 const char *stream, int event)
2114{
2115 struct snd_soc_codec *codec = rtd->codec;
2116
2117 if (stream == NULL)
2118 return 0;
2119
2120 mutex_lock(&codec->mutex);
2121 soc_dapm_stream_event(&codec->dapm, stream, event);
Eero Nurkkala8e8b2d62009-10-12 08:41:59 +03002122 mutex_unlock(&codec->mutex);
Richard Purdie2b97eab2006-10-06 18:32:18 +02002123 return 0;
2124}
2125EXPORT_SYMBOL_GPL(snd_soc_dapm_stream_event);
2126
2127/**
Liam Girdwooda5302182008-07-07 13:35:17 +01002128 * snd_soc_dapm_enable_pin - enable pin.
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002129 * @dapm: DAPM context
Liam Girdwooda5302182008-07-07 13:35:17 +01002130 * @pin: pin name
Richard Purdie2b97eab2006-10-06 18:32:18 +02002131 *
Mark Brown74b8f952009-06-06 11:26:15 +01002132 * Enables input/output pin and its parents or children widgets iff there is
Liam Girdwooda5302182008-07-07 13:35:17 +01002133 * a valid audio route and active audio stream.
2134 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
2135 * do any widget power switching.
Richard Purdie2b97eab2006-10-06 18:32:18 +02002136 */
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002137int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin)
Richard Purdie2b97eab2006-10-06 18:32:18 +02002138{
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002139 return snd_soc_dapm_set_pin(dapm, pin, 1);
Richard Purdie2b97eab2006-10-06 18:32:18 +02002140}
Liam Girdwooda5302182008-07-07 13:35:17 +01002141EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin);
Richard Purdie2b97eab2006-10-06 18:32:18 +02002142
2143/**
Mark Brownda341832010-03-15 19:23:37 +00002144 * snd_soc_dapm_force_enable_pin - force a pin to be enabled
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002145 * @dapm: DAPM context
Mark Brownda341832010-03-15 19:23:37 +00002146 * @pin: pin name
2147 *
2148 * Enables input/output pin regardless of any other state. This is
2149 * intended for use with microphone bias supplies used in microphone
2150 * jack detection.
2151 *
2152 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
2153 * do any widget power switching.
2154 */
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002155int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm,
2156 const char *pin)
Mark Brownda341832010-03-15 19:23:37 +00002157{
2158 struct snd_soc_dapm_widget *w;
2159
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002160 list_for_each_entry(w, &dapm->widgets, list) {
Mark Brownda341832010-03-15 19:23:37 +00002161 if (!strcmp(w->name, pin)) {
Jarkko Nikulaf7d41ae2010-11-09 14:40:27 +02002162 dev_dbg(w->dapm->dev,
2163 "dapm: force enable pin %s\n", pin);
Mark Brownda341832010-03-15 19:23:37 +00002164 w->connected = 1;
2165 w->force = 1;
2166 return 0;
2167 }
2168 }
2169
Jarkko Nikulaf7d41ae2010-11-09 14:40:27 +02002170 dev_err(dapm->dev, "dapm: unknown pin %s\n", pin);
Mark Brownda341832010-03-15 19:23:37 +00002171 return -EINVAL;
2172}
2173EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin);
2174
2175/**
Liam Girdwooda5302182008-07-07 13:35:17 +01002176 * snd_soc_dapm_disable_pin - disable pin.
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002177 * @dapm: DAPM context
Liam Girdwooda5302182008-07-07 13:35:17 +01002178 * @pin: pin name
Graeme Gregoryeeec12b2008-04-30 19:27:40 +02002179 *
Mark Brown74b8f952009-06-06 11:26:15 +01002180 * Disables input/output pin and its parents or children widgets.
Liam Girdwooda5302182008-07-07 13:35:17 +01002181 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
2182 * do any widget power switching.
Graeme Gregoryeeec12b2008-04-30 19:27:40 +02002183 */
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002184int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm,
2185 const char *pin)
Liam Girdwooda5302182008-07-07 13:35:17 +01002186{
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002187 return snd_soc_dapm_set_pin(dapm, pin, 0);
Liam Girdwooda5302182008-07-07 13:35:17 +01002188}
2189EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin);
2190
2191/**
Mark Brown5817b522008-09-24 11:23:11 +01002192 * snd_soc_dapm_nc_pin - permanently disable pin.
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002193 * @dapm: DAPM context
Mark Brown5817b522008-09-24 11:23:11 +01002194 * @pin: pin name
2195 *
2196 * Marks the specified pin as being not connected, disabling it along
2197 * any parent or child widgets. At present this is identical to
2198 * snd_soc_dapm_disable_pin() but in future it will be extended to do
2199 * additional things such as disabling controls which only affect
2200 * paths through the pin.
2201 *
2202 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
2203 * do any widget power switching.
2204 */
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002205int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin)
Mark Brown5817b522008-09-24 11:23:11 +01002206{
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002207 return snd_soc_dapm_set_pin(dapm, pin, 0);
Mark Brown5817b522008-09-24 11:23:11 +01002208}
2209EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin);
2210
2211/**
Liam Girdwooda5302182008-07-07 13:35:17 +01002212 * snd_soc_dapm_get_pin_status - get audio pin status
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002213 * @dapm: DAPM context
Liam Girdwooda5302182008-07-07 13:35:17 +01002214 * @pin: audio signal pin endpoint (or start point)
2215 *
2216 * Get audio pin status - connected or disconnected.
2217 *
2218 * Returns 1 for connected otherwise 0.
2219 */
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002220int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm,
2221 const char *pin)
Graeme Gregoryeeec12b2008-04-30 19:27:40 +02002222{
2223 struct snd_soc_dapm_widget *w;
2224
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002225 list_for_each_entry(w, &dapm->widgets, list) {
Liam Girdwooda5302182008-07-07 13:35:17 +01002226 if (!strcmp(w->name, pin))
Graeme Gregoryeeec12b2008-04-30 19:27:40 +02002227 return w->connected;
2228 }
2229
2230 return 0;
2231}
Liam Girdwooda5302182008-07-07 13:35:17 +01002232EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status);
Graeme Gregoryeeec12b2008-04-30 19:27:40 +02002233
2234/**
Mark Brown1547aba2010-05-07 21:11:40 +01002235 * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002236 * @dapm: DAPM context
Mark Brown1547aba2010-05-07 21:11:40 +01002237 * @pin: audio signal pin endpoint (or start point)
2238 *
2239 * Mark the given endpoint or pin as ignoring suspend. When the
2240 * system is disabled a path between two endpoints flagged as ignoring
2241 * suspend will not be disabled. The path must already be enabled via
2242 * normal means at suspend time, it will not be turned on if it was not
2243 * already enabled.
2244 */
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002245int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm,
2246 const char *pin)
Mark Brown1547aba2010-05-07 21:11:40 +01002247{
2248 struct snd_soc_dapm_widget *w;
2249
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002250 list_for_each_entry(w, &dapm->widgets, list) {
Mark Brown1547aba2010-05-07 21:11:40 +01002251 if (!strcmp(w->name, pin)) {
2252 w->ignore_suspend = 1;
2253 return 0;
2254 }
2255 }
2256
Jarkko Nikulaf7d41ae2010-11-09 14:40:27 +02002257 dev_err(dapm->dev, "dapm: unknown pin %s\n", pin);
Mark Brown1547aba2010-05-07 21:11:40 +01002258 return -EINVAL;
2259}
2260EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend);
2261
2262/**
Richard Purdie2b97eab2006-10-06 18:32:18 +02002263 * snd_soc_dapm_free - free dapm resources
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +00002264 * @card: SoC device
Richard Purdie2b97eab2006-10-06 18:32:18 +02002265 *
2266 * Free all dapm widgets and resources.
2267 */
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002268void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm)
Richard Purdie2b97eab2006-10-06 18:32:18 +02002269{
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002270 snd_soc_dapm_sys_remove(dapm->dev);
2271 dapm_free_widgets(dapm);
Richard Purdie2b97eab2006-10-06 18:32:18 +02002272}
2273EXPORT_SYMBOL_GPL(snd_soc_dapm_free);
2274
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002275static void soc_dapm_shutdown_codec(struct snd_soc_dapm_context *dapm)
Mark Brown51737472009-06-22 13:16:51 +01002276{
Mark Brown51737472009-06-22 13:16:51 +01002277 struct snd_soc_dapm_widget *w;
2278 LIST_HEAD(down_list);
2279 int powerdown = 0;
2280
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002281 list_for_each_entry(w, &dapm->widgets, list) {
Mark Brown51737472009-06-22 13:16:51 +01002282 if (w->power) {
2283 dapm_seq_insert(w, &down_list, dapm_down_seq);
Mark Brownc2caa4d2009-06-26 15:36:56 +01002284 w->power = 0;
Mark Brown51737472009-06-22 13:16:51 +01002285 powerdown = 1;
2286 }
2287 }
2288
2289 /* If there were no widgets to power down we're already in
2290 * standby.
2291 */
2292 if (powerdown) {
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002293 snd_soc_dapm_set_bias_level(NULL, dapm, SND_SOC_BIAS_PREPARE);
2294 dapm_seq_run(dapm, &down_list, 0, dapm_down_seq);
2295 snd_soc_dapm_set_bias_level(NULL, dapm, SND_SOC_BIAS_STANDBY);
Mark Brown51737472009-06-22 13:16:51 +01002296 }
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +00002297}
Mark Brown51737472009-06-22 13:16:51 +01002298
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +00002299/*
2300 * snd_soc_dapm_shutdown - callback for system shutdown
2301 */
2302void snd_soc_dapm_shutdown(struct snd_soc_card *card)
2303{
2304 struct snd_soc_codec *codec;
2305
Liam Girdwoodce6120c2010-11-05 15:53:46 +02002306 list_for_each_entry(codec, &card->codec_dev_list, list) {
2307 soc_dapm_shutdown_codec(&codec->dapm);
2308 snd_soc_dapm_set_bias_level(card, &codec->dapm, SND_SOC_BIAS_OFF);
2309 }
Mark Brown51737472009-06-22 13:16:51 +01002310}
2311
Richard Purdie2b97eab2006-10-06 18:32:18 +02002312/* Module information */
Liam Girdwoodd3311242008-10-12 13:17:36 +01002313MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
Richard Purdie2b97eab2006-10-06 18:32:18 +02002314MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
2315MODULE_LICENSE("GPL");