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Commit | Line | Data |
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2b97eabc RP |
1 | /* |
2 | * soc-dapm.c -- ALSA SoC Dynamic Audio Power Management | |
3 | * | |
4 | * Copyright 2005 Wolfson Microelectronics PLC. | |
d331124d | 5 | * Author: Liam Girdwood <lrg@slimlogic.co.uk> |
2b97eabc RP |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2 of the License, or (at your | |
10 | * option) any later version. | |
11 | * | |
2b97eabc RP |
12 | * Features: |
13 | * o Changes power status of internal codec blocks depending on the | |
14 | * dynamic configuration of codec internal audio paths and active | |
74b8f955 | 15 | * DACs/ADCs. |
2b97eabc RP |
16 | * 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 | |
3a4fa0a2 | 21 | * o Delayed powerdown of audio susbsystem to reduce pops between a quick |
2b97eabc RP |
22 | * 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> | |
9d0624a7 | 35 | #include <linux/async.h> |
2b97eabc RP |
36 | #include <linux/delay.h> |
37 | #include <linux/pm.h> | |
38 | #include <linux/bitops.h> | |
39 | #include <linux/platform_device.h> | |
40 | #include <linux/jiffies.h> | |
20496ff3 | 41 | #include <linux/debugfs.h> |
5a0e3ad6 | 42 | #include <linux/slab.h> |
2b97eabc RP |
43 | #include <sound/core.h> |
44 | #include <sound/pcm.h> | |
45 | #include <sound/pcm_params.h> | |
ce6120cc | 46 | #include <sound/soc.h> |
2b97eabc RP |
47 | #include <sound/initval.h> |
48 | ||
84e90930 MB |
49 | #include <trace/events/asoc.h> |
50 | ||
2b97eabc RP |
51 | /* dapm power sequences - make this per codec in the future */ |
52 | static int dapm_up_seq[] = { | |
38357ab2 MB |
53 | [snd_soc_dapm_pre] = 0, |
54 | [snd_soc_dapm_supply] = 1, | |
55 | [snd_soc_dapm_micbias] = 2, | |
010ff262 MB |
56 | [snd_soc_dapm_aif_in] = 3, |
57 | [snd_soc_dapm_aif_out] = 3, | |
58 | [snd_soc_dapm_mic] = 4, | |
59 | [snd_soc_dapm_mux] = 5, | |
24ff33ac | 60 | [snd_soc_dapm_virt_mux] = 5, |
010ff262 MB |
61 | [snd_soc_dapm_value_mux] = 5, |
62 | [snd_soc_dapm_dac] = 6, | |
63 | [snd_soc_dapm_mixer] = 7, | |
64 | [snd_soc_dapm_mixer_named_ctl] = 7, | |
65 | [snd_soc_dapm_pga] = 8, | |
66 | [snd_soc_dapm_adc] = 9, | |
d88429a6 | 67 | [snd_soc_dapm_out_drv] = 10, |
010ff262 MB |
68 | [snd_soc_dapm_hp] = 10, |
69 | [snd_soc_dapm_spk] = 10, | |
70 | [snd_soc_dapm_post] = 11, | |
2b97eabc | 71 | }; |
ca9c1aae | 72 | |
2b97eabc | 73 | static int dapm_down_seq[] = { |
38357ab2 MB |
74 | [snd_soc_dapm_pre] = 0, |
75 | [snd_soc_dapm_adc] = 1, | |
76 | [snd_soc_dapm_hp] = 2, | |
1ca04065 | 77 | [snd_soc_dapm_spk] = 2, |
d88429a6 | 78 | [snd_soc_dapm_out_drv] = 2, |
38357ab2 MB |
79 | [snd_soc_dapm_pga] = 4, |
80 | [snd_soc_dapm_mixer_named_ctl] = 5, | |
e3d4dabd MB |
81 | [snd_soc_dapm_mixer] = 5, |
82 | [snd_soc_dapm_dac] = 6, | |
83 | [snd_soc_dapm_mic] = 7, | |
84 | [snd_soc_dapm_micbias] = 8, | |
85 | [snd_soc_dapm_mux] = 9, | |
24ff33ac | 86 | [snd_soc_dapm_virt_mux] = 9, |
e3d4dabd | 87 | [snd_soc_dapm_value_mux] = 9, |
010ff262 MB |
88 | [snd_soc_dapm_aif_in] = 10, |
89 | [snd_soc_dapm_aif_out] = 10, | |
90 | [snd_soc_dapm_supply] = 11, | |
91 | [snd_soc_dapm_post] = 12, | |
2b97eabc RP |
92 | }; |
93 | ||
12ef193d | 94 | static void pop_wait(u32 pop_time) |
15e4c72f MB |
95 | { |
96 | if (pop_time) | |
97 | schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time)); | |
98 | } | |
99 | ||
fd8d3bc0 | 100 | static void pop_dbg(struct device *dev, u32 pop_time, const char *fmt, ...) |
15e4c72f MB |
101 | { |
102 | va_list args; | |
fd8d3bc0 | 103 | char *buf; |
15e4c72f | 104 | |
fd8d3bc0 JN |
105 | if (!pop_time) |
106 | return; | |
15e4c72f | 107 | |
fd8d3bc0 JN |
108 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); |
109 | if (buf == NULL) | |
110 | return; | |
15e4c72f | 111 | |
fd8d3bc0 JN |
112 | va_start(args, fmt); |
113 | vsnprintf(buf, PAGE_SIZE, fmt, args); | |
9d01df06 | 114 | dev_info(dev, "%s", buf); |
15e4c72f | 115 | va_end(args); |
fd8d3bc0 JN |
116 | |
117 | kfree(buf); | |
15e4c72f MB |
118 | } |
119 | ||
2b97eabc | 120 | /* create a new dapm widget */ |
88cb4290 | 121 | static inline struct snd_soc_dapm_widget *dapm_cnew_widget( |
2b97eabc RP |
122 | const struct snd_soc_dapm_widget *_widget) |
123 | { | |
88cb4290 | 124 | return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL); |
2b97eabc RP |
125 | } |
126 | ||
452c5eaa MB |
127 | /** |
128 | * snd_soc_dapm_set_bias_level - set the bias level for the system | |
ed5a4c47 | 129 | * @dapm: DAPM context |
452c5eaa MB |
130 | * @level: level to configure |
131 | * | |
132 | * Configure the bias (power) levels for the SoC audio device. | |
133 | * | |
134 | * Returns 0 for success else error. | |
135 | */ | |
ed5a4c47 | 136 | static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm, |
ce6120cc | 137 | enum snd_soc_bias_level level) |
452c5eaa | 138 | { |
ed5a4c47 | 139 | struct snd_soc_card *card = dapm->card; |
452c5eaa MB |
140 | int ret = 0; |
141 | ||
f83fba8b MB |
142 | switch (level) { |
143 | case SND_SOC_BIAS_ON: | |
ce6120cc | 144 | dev_dbg(dapm->dev, "Setting full bias\n"); |
f83fba8b MB |
145 | break; |
146 | case SND_SOC_BIAS_PREPARE: | |
ce6120cc | 147 | dev_dbg(dapm->dev, "Setting bias prepare\n"); |
f83fba8b MB |
148 | break; |
149 | case SND_SOC_BIAS_STANDBY: | |
ce6120cc | 150 | dev_dbg(dapm->dev, "Setting standby bias\n"); |
f83fba8b MB |
151 | break; |
152 | case SND_SOC_BIAS_OFF: | |
ce6120cc | 153 | dev_dbg(dapm->dev, "Setting bias off\n"); |
f83fba8b MB |
154 | break; |
155 | default: | |
ce6120cc | 156 | dev_err(dapm->dev, "Setting invalid bias %d\n", level); |
f83fba8b MB |
157 | return -EINVAL; |
158 | } | |
159 | ||
84e90930 MB |
160 | trace_snd_soc_bias_level_start(card, level); |
161 | ||
f0fba2ad | 162 | if (card && card->set_bias_level) |
452c5eaa | 163 | ret = card->set_bias_level(card, level); |
474e09ca | 164 | if (ret == 0) { |
ce6120cc LG |
165 | if (dapm->codec && dapm->codec->driver->set_bias_level) |
166 | ret = dapm->codec->driver->set_bias_level(dapm->codec, level); | |
474e09ca | 167 | else |
ce6120cc | 168 | dapm->bias_level = level; |
474e09ca | 169 | } |
1badabd9 MB |
170 | if (ret == 0) { |
171 | if (card && card->set_bias_level_post) | |
172 | ret = card->set_bias_level_post(card, level); | |
173 | } | |
452c5eaa | 174 | |
84e90930 MB |
175 | trace_snd_soc_bias_level_done(card, level); |
176 | ||
452c5eaa MB |
177 | return ret; |
178 | } | |
179 | ||
2b97eabc RP |
180 | /* set up initial codec paths */ |
181 | static void dapm_set_path_status(struct snd_soc_dapm_widget *w, | |
182 | struct snd_soc_dapm_path *p, int i) | |
183 | { | |
184 | switch (w->id) { | |
185 | case snd_soc_dapm_switch: | |
ca9c1aae IM |
186 | case snd_soc_dapm_mixer: |
187 | case snd_soc_dapm_mixer_named_ctl: { | |
2b97eabc | 188 | int val; |
4eaa9819 | 189 | struct soc_mixer_control *mc = (struct soc_mixer_control *) |
82cfecdc | 190 | w->kcontrol_news[i].private_value; |
815ecf8d JS |
191 | unsigned int reg = mc->reg; |
192 | unsigned int shift = mc->shift; | |
4eaa9819 | 193 | int max = mc->max; |
815ecf8d JS |
194 | unsigned int mask = (1 << fls(max)) - 1; |
195 | unsigned int invert = mc->invert; | |
2b97eabc RP |
196 | |
197 | val = snd_soc_read(w->codec, reg); | |
198 | val = (val >> shift) & mask; | |
199 | ||
200 | if ((invert && !val) || (!invert && val)) | |
201 | p->connect = 1; | |
202 | else | |
203 | p->connect = 0; | |
204 | } | |
205 | break; | |
206 | case snd_soc_dapm_mux: { | |
82cfecdc SW |
207 | struct soc_enum *e = (struct soc_enum *) |
208 | w->kcontrol_news[i].private_value; | |
2b97eabc RP |
209 | int val, item, bitmask; |
210 | ||
f8ba0b7b | 211 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
212 | ; |
213 | val = snd_soc_read(w->codec, e->reg); | |
214 | item = (val >> e->shift_l) & (bitmask - 1); | |
215 | ||
216 | p->connect = 0; | |
f8ba0b7b | 217 | for (i = 0; i < e->max; i++) { |
2b97eabc RP |
218 | if (!(strcmp(p->name, e->texts[i])) && item == i) |
219 | p->connect = 1; | |
220 | } | |
221 | } | |
222 | break; | |
24ff33ac | 223 | case snd_soc_dapm_virt_mux: { |
82cfecdc SW |
224 | struct soc_enum *e = (struct soc_enum *) |
225 | w->kcontrol_news[i].private_value; | |
24ff33ac DP |
226 | |
227 | p->connect = 0; | |
228 | /* since a virtual mux has no backing registers to | |
229 | * decide which path to connect, it will try to match | |
230 | * with the first enumeration. This is to ensure | |
231 | * that the default mux choice (the first) will be | |
232 | * correctly powered up during initialization. | |
233 | */ | |
234 | if (!strcmp(p->name, e->texts[0])) | |
235 | p->connect = 1; | |
236 | } | |
237 | break; | |
2e72f8e3 | 238 | case snd_soc_dapm_value_mux: { |
74155556 | 239 | struct soc_enum *e = (struct soc_enum *) |
82cfecdc | 240 | w->kcontrol_news[i].private_value; |
2e72f8e3 PU |
241 | int val, item; |
242 | ||
243 | val = snd_soc_read(w->codec, e->reg); | |
244 | val = (val >> e->shift_l) & e->mask; | |
245 | for (item = 0; item < e->max; item++) { | |
246 | if (val == e->values[item]) | |
247 | break; | |
248 | } | |
249 | ||
250 | p->connect = 0; | |
251 | for (i = 0; i < e->max; i++) { | |
252 | if (!(strcmp(p->name, e->texts[i])) && item == i) | |
253 | p->connect = 1; | |
254 | } | |
255 | } | |
256 | break; | |
2b97eabc RP |
257 | /* does not effect routing - always connected */ |
258 | case snd_soc_dapm_pga: | |
d88429a6 | 259 | case snd_soc_dapm_out_drv: |
2b97eabc RP |
260 | case snd_soc_dapm_output: |
261 | case snd_soc_dapm_adc: | |
262 | case snd_soc_dapm_input: | |
263 | case snd_soc_dapm_dac: | |
264 | case snd_soc_dapm_micbias: | |
265 | case snd_soc_dapm_vmid: | |
246d0a17 | 266 | case snd_soc_dapm_supply: |
010ff262 MB |
267 | case snd_soc_dapm_aif_in: |
268 | case snd_soc_dapm_aif_out: | |
2b97eabc RP |
269 | p->connect = 1; |
270 | break; | |
271 | /* does effect routing - dynamically connected */ | |
272 | case snd_soc_dapm_hp: | |
273 | case snd_soc_dapm_mic: | |
274 | case snd_soc_dapm_spk: | |
275 | case snd_soc_dapm_line: | |
276 | case snd_soc_dapm_pre: | |
277 | case snd_soc_dapm_post: | |
278 | p->connect = 0; | |
279 | break; | |
280 | } | |
281 | } | |
282 | ||
74b8f955 | 283 | /* connect mux widget to its interconnecting audio paths */ |
ce6120cc | 284 | static int dapm_connect_mux(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
285 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, |
286 | struct snd_soc_dapm_path *path, const char *control_name, | |
287 | const struct snd_kcontrol_new *kcontrol) | |
288 | { | |
289 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
290 | int i; | |
291 | ||
f8ba0b7b | 292 | for (i = 0; i < e->max; i++) { |
2b97eabc | 293 | if (!(strcmp(control_name, e->texts[i]))) { |
8ddab3f5 | 294 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
295 | list_add(&path->list_sink, &dest->sources); |
296 | list_add(&path->list_source, &src->sinks); | |
297 | path->name = (char*)e->texts[i]; | |
298 | dapm_set_path_status(dest, path, 0); | |
299 | return 0; | |
300 | } | |
301 | } | |
302 | ||
303 | return -ENODEV; | |
304 | } | |
305 | ||
74b8f955 | 306 | /* connect mixer widget to its interconnecting audio paths */ |
ce6120cc | 307 | static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
308 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, |
309 | struct snd_soc_dapm_path *path, const char *control_name) | |
310 | { | |
311 | int i; | |
312 | ||
313 | /* search for mixer kcontrol */ | |
314 | for (i = 0; i < dest->num_kcontrols; i++) { | |
82cfecdc | 315 | if (!strcmp(control_name, dest->kcontrol_news[i].name)) { |
8ddab3f5 | 316 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
317 | list_add(&path->list_sink, &dest->sources); |
318 | list_add(&path->list_source, &src->sinks); | |
82cfecdc | 319 | path->name = dest->kcontrol_news[i].name; |
2b97eabc RP |
320 | dapm_set_path_status(dest, path, i); |
321 | return 0; | |
322 | } | |
323 | } | |
324 | return -ENODEV; | |
325 | } | |
326 | ||
2b97eabc | 327 | /* create new dapm mixer control */ |
ce6120cc | 328 | static int dapm_new_mixer(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
329 | struct snd_soc_dapm_widget *w) |
330 | { | |
331 | int i, ret = 0; | |
3e5ff4df | 332 | size_t name_len, prefix_len; |
2b97eabc | 333 | struct snd_soc_dapm_path *path; |
12ea2c78 | 334 | struct snd_card *card = dapm->card->snd_card; |
efb7ac3f MB |
335 | const char *prefix; |
336 | ||
337 | if (dapm->codec) | |
338 | prefix = dapm->codec->name_prefix; | |
339 | else | |
340 | prefix = NULL; | |
2b97eabc | 341 | |
3e5ff4df MB |
342 | if (prefix) |
343 | prefix_len = strlen(prefix) + 1; | |
344 | else | |
345 | prefix_len = 0; | |
346 | ||
2b97eabc RP |
347 | /* add kcontrol */ |
348 | for (i = 0; i < w->num_kcontrols; i++) { | |
349 | ||
350 | /* match name */ | |
351 | list_for_each_entry(path, &w->sources, list_sink) { | |
352 | ||
353 | /* mixer/mux paths name must match control name */ | |
82cfecdc | 354 | if (path->name != (char *)w->kcontrol_news[i].name) |
2b97eabc RP |
355 | continue; |
356 | ||
ca9c1aae IM |
357 | /* add dapm control with long name. |
358 | * for dapm_mixer this is the concatenation of the | |
359 | * mixer and kcontrol name. | |
360 | * for dapm_mixer_named_ctl this is simply the | |
361 | * kcontrol name. | |
362 | */ | |
82cfecdc | 363 | name_len = strlen(w->kcontrol_news[i].name) + 1; |
07495f3e | 364 | if (w->id != snd_soc_dapm_mixer_named_ctl) |
ca9c1aae IM |
365 | name_len += 1 + strlen(w->name); |
366 | ||
219b93f5 | 367 | path->long_name = kmalloc(name_len, GFP_KERNEL); |
ca9c1aae | 368 | |
2b97eabc RP |
369 | if (path->long_name == NULL) |
370 | return -ENOMEM; | |
371 | ||
ca9c1aae | 372 | switch (w->id) { |
ca9c1aae | 373 | default: |
3e5ff4df MB |
374 | /* The control will get a prefix from |
375 | * the control creation process but | |
376 | * we're also using the same prefix | |
377 | * for widgets so cut the prefix off | |
378 | * the front of the widget name. | |
379 | */ | |
ca9c1aae | 380 | snprintf(path->long_name, name_len, "%s %s", |
3e5ff4df | 381 | w->name + prefix_len, |
82cfecdc | 382 | w->kcontrol_news[i].name); |
07495f3e | 383 | break; |
ca9c1aae IM |
384 | case snd_soc_dapm_mixer_named_ctl: |
385 | snprintf(path->long_name, name_len, "%s", | |
82cfecdc | 386 | w->kcontrol_news[i].name); |
07495f3e | 387 | break; |
ca9c1aae IM |
388 | } |
389 | ||
219b93f5 MB |
390 | path->long_name[name_len - 1] = '\0'; |
391 | ||
82cfecdc | 392 | path->kcontrol = snd_soc_cnew(&w->kcontrol_news[i], w, |
efb7ac3f | 393 | path->long_name, prefix); |
ce6120cc | 394 | ret = snd_ctl_add(card, path->kcontrol); |
2b97eabc | 395 | if (ret < 0) { |
f7d41ae8 JN |
396 | dev_err(dapm->dev, |
397 | "asoc: failed to add dapm kcontrol %s: %d\n", | |
398 | path->long_name, ret); | |
2b97eabc RP |
399 | kfree(path->long_name); |
400 | path->long_name = NULL; | |
401 | return ret; | |
402 | } | |
403 | } | |
404 | } | |
405 | return ret; | |
406 | } | |
407 | ||
408 | /* create new dapm mux control */ | |
ce6120cc | 409 | static int dapm_new_mux(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
410 | struct snd_soc_dapm_widget *w) |
411 | { | |
412 | struct snd_soc_dapm_path *path = NULL; | |
413 | struct snd_kcontrol *kcontrol; | |
12ea2c78 | 414 | struct snd_card *card = dapm->card->snd_card; |
efb7ac3f | 415 | const char *prefix; |
3e5ff4df | 416 | size_t prefix_len; |
2b97eabc RP |
417 | int ret = 0; |
418 | ||
419 | if (!w->num_kcontrols) { | |
f7d41ae8 | 420 | dev_err(dapm->dev, "asoc: mux %s has no controls\n", w->name); |
2b97eabc RP |
421 | return -EINVAL; |
422 | } | |
423 | ||
efb7ac3f MB |
424 | if (dapm->codec) |
425 | prefix = dapm->codec->name_prefix; | |
426 | else | |
427 | prefix = NULL; | |
428 | ||
3e5ff4df MB |
429 | if (prefix) |
430 | prefix_len = strlen(prefix) + 1; | |
431 | else | |
432 | prefix_len = 0; | |
433 | ||
434 | /* The control will get a prefix from the control creation | |
435 | * process but we're also using the same prefix for widgets so | |
436 | * cut the prefix off the front of the widget name. | |
437 | */ | |
82cfecdc | 438 | kcontrol = snd_soc_cnew(&w->kcontrol_news[0], w, w->name + prefix_len, |
3e5ff4df | 439 | prefix); |
ce6120cc LG |
440 | ret = snd_ctl_add(card, kcontrol); |
441 | ||
2b97eabc RP |
442 | if (ret < 0) |
443 | goto err; | |
444 | ||
445 | list_for_each_entry(path, &w->sources, list_sink) | |
446 | path->kcontrol = kcontrol; | |
447 | ||
448 | return ret; | |
449 | ||
450 | err: | |
f7d41ae8 | 451 | dev_err(dapm->dev, "asoc: failed to add kcontrol %s\n", w->name); |
2b97eabc RP |
452 | return ret; |
453 | } | |
454 | ||
455 | /* create new dapm volume control */ | |
ce6120cc | 456 | static int dapm_new_pga(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
457 | struct snd_soc_dapm_widget *w) |
458 | { | |
a6c65736 | 459 | if (w->num_kcontrols) |
f7d41ae8 JN |
460 | dev_err(w->dapm->dev, |
461 | "asoc: PGA controls not supported: '%s'\n", w->name); | |
2b97eabc | 462 | |
a6c65736 | 463 | return 0; |
2b97eabc RP |
464 | } |
465 | ||
466 | /* reset 'walked' bit for each dapm path */ | |
ce6120cc | 467 | static inline void dapm_clear_walk(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
468 | { |
469 | struct snd_soc_dapm_path *p; | |
470 | ||
8ddab3f5 | 471 | list_for_each_entry(p, &dapm->card->paths, list) |
2b97eabc RP |
472 | p->walked = 0; |
473 | } | |
474 | ||
9949788b MB |
475 | /* We implement power down on suspend by checking the power state of |
476 | * the ALSA card - when we are suspending the ALSA state for the card | |
477 | * is set to D3. | |
478 | */ | |
479 | static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget) | |
480 | { | |
12ea2c78 | 481 | int level = snd_power_get_state(widget->dapm->card->snd_card); |
9949788b | 482 | |
f0fba2ad | 483 | switch (level) { |
9949788b MB |
484 | case SNDRV_CTL_POWER_D3hot: |
485 | case SNDRV_CTL_POWER_D3cold: | |
1547aba9 | 486 | if (widget->ignore_suspend) |
f7d41ae8 JN |
487 | dev_dbg(widget->dapm->dev, "%s ignoring suspend\n", |
488 | widget->name); | |
1547aba9 | 489 | return widget->ignore_suspend; |
9949788b MB |
490 | default: |
491 | return 1; | |
492 | } | |
493 | } | |
494 | ||
2b97eabc RP |
495 | /* |
496 | * Recursively check for a completed path to an active or physically connected | |
497 | * output widget. Returns number of complete paths. | |
498 | */ | |
499 | static int is_connected_output_ep(struct snd_soc_dapm_widget *widget) | |
500 | { | |
501 | struct snd_soc_dapm_path *path; | |
502 | int con = 0; | |
503 | ||
246d0a17 MB |
504 | if (widget->id == snd_soc_dapm_supply) |
505 | return 0; | |
506 | ||
010ff262 MB |
507 | switch (widget->id) { |
508 | case snd_soc_dapm_adc: | |
509 | case snd_soc_dapm_aif_out: | |
510 | if (widget->active) | |
9949788b | 511 | return snd_soc_dapm_suspend_check(widget); |
010ff262 MB |
512 | default: |
513 | break; | |
514 | } | |
2b97eabc RP |
515 | |
516 | if (widget->connected) { | |
517 | /* connected pin ? */ | |
518 | if (widget->id == snd_soc_dapm_output && !widget->ext) | |
9949788b | 519 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
520 | |
521 | /* connected jack or spk ? */ | |
522 | if (widget->id == snd_soc_dapm_hp || widget->id == snd_soc_dapm_spk || | |
eaeae5d9 | 523 | (widget->id == snd_soc_dapm_line && !list_empty(&widget->sources))) |
9949788b | 524 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
525 | } |
526 | ||
527 | list_for_each_entry(path, &widget->sinks, list_source) { | |
528 | if (path->walked) | |
529 | continue; | |
530 | ||
531 | if (path->sink && path->connect) { | |
532 | path->walked = 1; | |
533 | con += is_connected_output_ep(path->sink); | |
534 | } | |
535 | } | |
536 | ||
537 | return con; | |
538 | } | |
539 | ||
540 | /* | |
541 | * Recursively check for a completed path to an active or physically connected | |
542 | * input widget. Returns number of complete paths. | |
543 | */ | |
544 | static int is_connected_input_ep(struct snd_soc_dapm_widget *widget) | |
545 | { | |
546 | struct snd_soc_dapm_path *path; | |
547 | int con = 0; | |
548 | ||
246d0a17 MB |
549 | if (widget->id == snd_soc_dapm_supply) |
550 | return 0; | |
551 | ||
2b97eabc | 552 | /* active stream ? */ |
010ff262 MB |
553 | switch (widget->id) { |
554 | case snd_soc_dapm_dac: | |
555 | case snd_soc_dapm_aif_in: | |
556 | if (widget->active) | |
9949788b | 557 | return snd_soc_dapm_suspend_check(widget); |
010ff262 MB |
558 | default: |
559 | break; | |
560 | } | |
2b97eabc RP |
561 | |
562 | if (widget->connected) { | |
563 | /* connected pin ? */ | |
564 | if (widget->id == snd_soc_dapm_input && !widget->ext) | |
9949788b | 565 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
566 | |
567 | /* connected VMID/Bias for lower pops */ | |
568 | if (widget->id == snd_soc_dapm_vmid) | |
9949788b | 569 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
570 | |
571 | /* connected jack ? */ | |
eaeae5d9 PU |
572 | if (widget->id == snd_soc_dapm_mic || |
573 | (widget->id == snd_soc_dapm_line && !list_empty(&widget->sinks))) | |
9949788b | 574 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
575 | } |
576 | ||
577 | list_for_each_entry(path, &widget->sources, list_sink) { | |
578 | if (path->walked) | |
579 | continue; | |
580 | ||
581 | if (path->source && path->connect) { | |
582 | path->walked = 1; | |
583 | con += is_connected_input_ep(path->source); | |
584 | } | |
585 | } | |
586 | ||
587 | return con; | |
588 | } | |
589 | ||
e2be2ccf JN |
590 | /* |
591 | * Handler for generic register modifier widget. | |
592 | */ | |
593 | int dapm_reg_event(struct snd_soc_dapm_widget *w, | |
594 | struct snd_kcontrol *kcontrol, int event) | |
595 | { | |
596 | unsigned int val; | |
597 | ||
598 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
599 | val = w->on_val; | |
600 | else | |
601 | val = w->off_val; | |
602 | ||
603 | snd_soc_update_bits(w->codec, -(w->reg + 1), | |
604 | w->mask << w->shift, val << w->shift); | |
605 | ||
606 | return 0; | |
607 | } | |
11589418 | 608 | EXPORT_SYMBOL_GPL(dapm_reg_event); |
e2be2ccf | 609 | |
cd0f2d47 MB |
610 | /* Generic check to see if a widget should be powered. |
611 | */ | |
612 | static int dapm_generic_check_power(struct snd_soc_dapm_widget *w) | |
613 | { | |
614 | int in, out; | |
615 | ||
616 | in = is_connected_input_ep(w); | |
ce6120cc | 617 | dapm_clear_walk(w->dapm); |
cd0f2d47 | 618 | out = is_connected_output_ep(w); |
ce6120cc | 619 | dapm_clear_walk(w->dapm); |
cd0f2d47 MB |
620 | return out != 0 && in != 0; |
621 | } | |
622 | ||
6ea31b9f MB |
623 | /* Check to see if an ADC has power */ |
624 | static int dapm_adc_check_power(struct snd_soc_dapm_widget *w) | |
625 | { | |
626 | int in; | |
627 | ||
628 | if (w->active) { | |
629 | in = is_connected_input_ep(w); | |
ce6120cc | 630 | dapm_clear_walk(w->dapm); |
6ea31b9f MB |
631 | return in != 0; |
632 | } else { | |
633 | return dapm_generic_check_power(w); | |
634 | } | |
635 | } | |
636 | ||
637 | /* Check to see if a DAC has power */ | |
638 | static int dapm_dac_check_power(struct snd_soc_dapm_widget *w) | |
639 | { | |
640 | int out; | |
641 | ||
642 | if (w->active) { | |
643 | out = is_connected_output_ep(w); | |
ce6120cc | 644 | dapm_clear_walk(w->dapm); |
6ea31b9f MB |
645 | return out != 0; |
646 | } else { | |
647 | return dapm_generic_check_power(w); | |
648 | } | |
649 | } | |
650 | ||
246d0a17 MB |
651 | /* Check to see if a power supply is needed */ |
652 | static int dapm_supply_check_power(struct snd_soc_dapm_widget *w) | |
653 | { | |
654 | struct snd_soc_dapm_path *path; | |
655 | int power = 0; | |
656 | ||
657 | /* Check if one of our outputs is connected */ | |
658 | list_for_each_entry(path, &w->sinks, list_source) { | |
215edda3 MB |
659 | if (path->connected && |
660 | !path->connected(path->source, path->sink)) | |
661 | continue; | |
662 | ||
3017358a MB |
663 | if (!path->sink) |
664 | continue; | |
665 | ||
666 | if (path->sink->force) { | |
667 | power = 1; | |
668 | break; | |
669 | } | |
670 | ||
671 | if (path->sink->power_check && | |
246d0a17 MB |
672 | path->sink->power_check(path->sink)) { |
673 | power = 1; | |
674 | break; | |
675 | } | |
676 | } | |
677 | ||
ce6120cc | 678 | dapm_clear_walk(w->dapm); |
246d0a17 MB |
679 | |
680 | return power; | |
681 | } | |
682 | ||
38357ab2 MB |
683 | static int dapm_seq_compare(struct snd_soc_dapm_widget *a, |
684 | struct snd_soc_dapm_widget *b, | |
828a842f | 685 | bool power_up) |
42aa3418 | 686 | { |
828a842f MB |
687 | int *sort; |
688 | ||
689 | if (power_up) | |
690 | sort = dapm_up_seq; | |
691 | else | |
692 | sort = dapm_down_seq; | |
693 | ||
38357ab2 MB |
694 | if (sort[a->id] != sort[b->id]) |
695 | return sort[a->id] - sort[b->id]; | |
20e4859d MB |
696 | if (a->subseq != b->subseq) { |
697 | if (power_up) | |
698 | return a->subseq - b->subseq; | |
699 | else | |
700 | return b->subseq - a->subseq; | |
701 | } | |
b22ead2a MB |
702 | if (a->reg != b->reg) |
703 | return a->reg - b->reg; | |
84dab567 MB |
704 | if (a->dapm != b->dapm) |
705 | return (unsigned long)a->dapm - (unsigned long)b->dapm; | |
42aa3418 | 706 | |
38357ab2 MB |
707 | return 0; |
708 | } | |
42aa3418 | 709 | |
38357ab2 MB |
710 | /* Insert a widget in order into a DAPM power sequence. */ |
711 | static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget, | |
712 | struct list_head *list, | |
828a842f | 713 | bool power_up) |
38357ab2 MB |
714 | { |
715 | struct snd_soc_dapm_widget *w; | |
716 | ||
717 | list_for_each_entry(w, list, power_list) | |
828a842f | 718 | if (dapm_seq_compare(new_widget, w, power_up) < 0) { |
38357ab2 MB |
719 | list_add_tail(&new_widget->power_list, &w->power_list); |
720 | return; | |
721 | } | |
722 | ||
723 | list_add_tail(&new_widget->power_list, list); | |
724 | } | |
725 | ||
68f89ad8 MB |
726 | static void dapm_seq_check_event(struct snd_soc_dapm_context *dapm, |
727 | struct snd_soc_dapm_widget *w, int event) | |
728 | { | |
729 | struct snd_soc_card *card = dapm->card; | |
730 | const char *ev_name; | |
731 | int power, ret; | |
732 | ||
733 | switch (event) { | |
734 | case SND_SOC_DAPM_PRE_PMU: | |
735 | ev_name = "PRE_PMU"; | |
736 | power = 1; | |
737 | break; | |
738 | case SND_SOC_DAPM_POST_PMU: | |
739 | ev_name = "POST_PMU"; | |
740 | power = 1; | |
741 | break; | |
742 | case SND_SOC_DAPM_PRE_PMD: | |
743 | ev_name = "PRE_PMD"; | |
744 | power = 0; | |
745 | break; | |
746 | case SND_SOC_DAPM_POST_PMD: | |
747 | ev_name = "POST_PMD"; | |
748 | power = 0; | |
749 | break; | |
750 | default: | |
751 | BUG(); | |
752 | return; | |
753 | } | |
754 | ||
755 | if (w->power != power) | |
756 | return; | |
757 | ||
758 | if (w->event && (w->event_flags & event)) { | |
759 | pop_dbg(dapm->dev, card->pop_time, "pop test : %s %s\n", | |
760 | w->name, ev_name); | |
84e90930 | 761 | trace_snd_soc_dapm_widget_event_start(w, event); |
68f89ad8 | 762 | ret = w->event(w, NULL, event); |
84e90930 | 763 | trace_snd_soc_dapm_widget_event_done(w, event); |
68f89ad8 MB |
764 | if (ret < 0) |
765 | pr_err("%s: %s event failed: %d\n", | |
766 | ev_name, w->name, ret); | |
767 | } | |
768 | } | |
769 | ||
b22ead2a | 770 | /* Apply the coalesced changes from a DAPM sequence */ |
ce6120cc | 771 | static void dapm_seq_run_coalesced(struct snd_soc_dapm_context *dapm, |
b22ead2a | 772 | struct list_head *pending) |
163cac06 | 773 | { |
3a45b867 | 774 | struct snd_soc_card *card = dapm->card; |
68f89ad8 MB |
775 | struct snd_soc_dapm_widget *w; |
776 | int reg, power; | |
b22ead2a MB |
777 | unsigned int value = 0; |
778 | unsigned int mask = 0; | |
779 | unsigned int cur_mask; | |
780 | ||
781 | reg = list_first_entry(pending, struct snd_soc_dapm_widget, | |
782 | power_list)->reg; | |
783 | ||
784 | list_for_each_entry(w, pending, power_list) { | |
785 | cur_mask = 1 << w->shift; | |
786 | BUG_ON(reg != w->reg); | |
787 | ||
788 | if (w->invert) | |
789 | power = !w->power; | |
790 | else | |
791 | power = w->power; | |
792 | ||
793 | mask |= cur_mask; | |
794 | if (power) | |
795 | value |= cur_mask; | |
796 | ||
fd8d3bc0 | 797 | pop_dbg(dapm->dev, card->pop_time, |
b22ead2a MB |
798 | "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n", |
799 | w->name, reg, value, mask); | |
81628103 | 800 | |
68f89ad8 MB |
801 | /* Check for events */ |
802 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMU); | |
803 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMD); | |
81628103 MB |
804 | } |
805 | ||
806 | if (reg >= 0) { | |
fd8d3bc0 | 807 | pop_dbg(dapm->dev, card->pop_time, |
81628103 | 808 | "pop test : Applying 0x%x/0x%x to %x in %dms\n", |
3a45b867 JN |
809 | value, mask, reg, card->pop_time); |
810 | pop_wait(card->pop_time); | |
ce6120cc | 811 | snd_soc_update_bits(dapm->codec, reg, mask, value); |
b22ead2a MB |
812 | } |
813 | ||
81628103 | 814 | list_for_each_entry(w, pending, power_list) { |
68f89ad8 MB |
815 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMU); |
816 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMD); | |
81628103 | 817 | } |
b22ead2a | 818 | } |
42aa3418 | 819 | |
b22ead2a MB |
820 | /* Apply a DAPM power sequence. |
821 | * | |
822 | * We walk over a pre-sorted list of widgets to apply power to. In | |
823 | * order to minimise the number of writes to the device required | |
824 | * multiple widgets will be updated in a single write where possible. | |
825 | * Currently anything that requires more than a single write is not | |
826 | * handled. | |
827 | */ | |
ce6120cc | 828 | static void dapm_seq_run(struct snd_soc_dapm_context *dapm, |
828a842f | 829 | struct list_head *list, int event, bool power_up) |
b22ead2a MB |
830 | { |
831 | struct snd_soc_dapm_widget *w, *n; | |
832 | LIST_HEAD(pending); | |
833 | int cur_sort = -1; | |
20e4859d | 834 | int cur_subseq = -1; |
b22ead2a | 835 | int cur_reg = SND_SOC_NOPM; |
7be31be8 | 836 | struct snd_soc_dapm_context *cur_dapm = NULL; |
474b62d6 | 837 | int ret, i; |
828a842f MB |
838 | int *sort; |
839 | ||
840 | if (power_up) | |
841 | sort = dapm_up_seq; | |
842 | else | |
843 | sort = dapm_down_seq; | |
163cac06 | 844 | |
b22ead2a MB |
845 | list_for_each_entry_safe(w, n, list, power_list) { |
846 | ret = 0; | |
847 | ||
848 | /* Do we need to apply any queued changes? */ | |
7be31be8 | 849 | if (sort[w->id] != cur_sort || w->reg != cur_reg || |
20e4859d | 850 | w->dapm != cur_dapm || w->subseq != cur_subseq) { |
b22ead2a | 851 | if (!list_empty(&pending)) |
7be31be8 | 852 | dapm_seq_run_coalesced(cur_dapm, &pending); |
b22ead2a | 853 | |
474b62d6 MB |
854 | if (cur_dapm && cur_dapm->seq_notifier) { |
855 | for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++) | |
856 | if (sort[i] == cur_sort) | |
857 | cur_dapm->seq_notifier(cur_dapm, | |
f85a9e0d MB |
858 | i, |
859 | cur_subseq); | |
474b62d6 MB |
860 | } |
861 | ||
b22ead2a MB |
862 | INIT_LIST_HEAD(&pending); |
863 | cur_sort = -1; | |
20e4859d | 864 | cur_subseq = -1; |
b22ead2a | 865 | cur_reg = SND_SOC_NOPM; |
7be31be8 | 866 | cur_dapm = NULL; |
b22ead2a MB |
867 | } |
868 | ||
163cac06 MB |
869 | switch (w->id) { |
870 | case snd_soc_dapm_pre: | |
871 | if (!w->event) | |
b22ead2a MB |
872 | list_for_each_entry_safe_continue(w, n, list, |
873 | power_list); | |
163cac06 | 874 | |
b22ead2a | 875 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
876 | ret = w->event(w, |
877 | NULL, SND_SOC_DAPM_PRE_PMU); | |
b22ead2a | 878 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
879 | ret = w->event(w, |
880 | NULL, SND_SOC_DAPM_PRE_PMD); | |
163cac06 MB |
881 | break; |
882 | ||
883 | case snd_soc_dapm_post: | |
884 | if (!w->event) | |
b22ead2a MB |
885 | list_for_each_entry_safe_continue(w, n, list, |
886 | power_list); | |
163cac06 | 887 | |
b22ead2a | 888 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
889 | ret = w->event(w, |
890 | NULL, SND_SOC_DAPM_POST_PMU); | |
b22ead2a | 891 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
892 | ret = w->event(w, |
893 | NULL, SND_SOC_DAPM_POST_PMD); | |
163cac06 MB |
894 | break; |
895 | ||
b22ead2a | 896 | default: |
81628103 MB |
897 | /* Queue it up for application */ |
898 | cur_sort = sort[w->id]; | |
20e4859d | 899 | cur_subseq = w->subseq; |
81628103 | 900 | cur_reg = w->reg; |
7be31be8 | 901 | cur_dapm = w->dapm; |
81628103 MB |
902 | list_move(&w->power_list, &pending); |
903 | break; | |
163cac06 | 904 | } |
b22ead2a MB |
905 | |
906 | if (ret < 0) | |
f7d41ae8 JN |
907 | dev_err(w->dapm->dev, |
908 | "Failed to apply widget power: %d\n", ret); | |
6ea31b9f | 909 | } |
b22ead2a MB |
910 | |
911 | if (!list_empty(&pending)) | |
28e86808 | 912 | dapm_seq_run_coalesced(cur_dapm, &pending); |
474b62d6 MB |
913 | |
914 | if (cur_dapm && cur_dapm->seq_notifier) { | |
915 | for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++) | |
916 | if (sort[i] == cur_sort) | |
917 | cur_dapm->seq_notifier(cur_dapm, | |
f85a9e0d | 918 | i, cur_subseq); |
474b62d6 | 919 | } |
42aa3418 MB |
920 | } |
921 | ||
97404f2e MB |
922 | static void dapm_widget_update(struct snd_soc_dapm_context *dapm) |
923 | { | |
924 | struct snd_soc_dapm_update *update = dapm->update; | |
925 | struct snd_soc_dapm_widget *w; | |
926 | int ret; | |
927 | ||
928 | if (!update) | |
929 | return; | |
930 | ||
931 | w = update->widget; | |
932 | ||
933 | if (w->event && | |
934 | (w->event_flags & SND_SOC_DAPM_PRE_REG)) { | |
935 | ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG); | |
936 | if (ret != 0) | |
937 | pr_err("%s DAPM pre-event failed: %d\n", | |
938 | w->name, ret); | |
939 | } | |
940 | ||
941 | ret = snd_soc_update_bits(w->codec, update->reg, update->mask, | |
942 | update->val); | |
943 | if (ret < 0) | |
944 | pr_err("%s DAPM update failed: %d\n", w->name, ret); | |
945 | ||
946 | if (w->event && | |
947 | (w->event_flags & SND_SOC_DAPM_POST_REG)) { | |
948 | ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG); | |
949 | if (ret != 0) | |
950 | pr_err("%s DAPM post-event failed: %d\n", | |
951 | w->name, ret); | |
952 | } | |
953 | } | |
954 | ||
9d0624a7 MB |
955 | /* Async callback run prior to DAPM sequences - brings to _PREPARE if |
956 | * they're changing state. | |
957 | */ | |
958 | static void dapm_pre_sequence_async(void *data, async_cookie_t cookie) | |
959 | { | |
960 | struct snd_soc_dapm_context *d = data; | |
961 | int ret; | |
962 | ||
963 | if (d->dev_power && d->bias_level == SND_SOC_BIAS_OFF) { | |
964 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY); | |
965 | if (ret != 0) | |
966 | dev_err(d->dev, | |
967 | "Failed to turn on bias: %d\n", ret); | |
968 | } | |
969 | ||
970 | /* If we're changing to all on or all off then prepare */ | |
971 | if ((d->dev_power && d->bias_level == SND_SOC_BIAS_STANDBY) || | |
972 | (!d->dev_power && d->bias_level == SND_SOC_BIAS_ON)) { | |
973 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE); | |
974 | if (ret != 0) | |
975 | dev_err(d->dev, | |
976 | "Failed to prepare bias: %d\n", ret); | |
977 | } | |
978 | } | |
979 | ||
980 | /* Async callback run prior to DAPM sequences - brings to their final | |
981 | * state. | |
982 | */ | |
983 | static void dapm_post_sequence_async(void *data, async_cookie_t cookie) | |
984 | { | |
985 | struct snd_soc_dapm_context *d = data; | |
986 | int ret; | |
987 | ||
988 | /* If we just powered the last thing off drop to standby bias */ | |
989 | if (d->bias_level == SND_SOC_BIAS_PREPARE && !d->dev_power) { | |
990 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY); | |
991 | if (ret != 0) | |
992 | dev_err(d->dev, "Failed to apply standby bias: %d\n", | |
993 | ret); | |
994 | } | |
97404f2e | 995 | |
9d0624a7 MB |
996 | /* If we're in standby and can support bias off then do that */ |
997 | if (d->bias_level == SND_SOC_BIAS_STANDBY && d->idle_bias_off) { | |
998 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF); | |
999 | if (ret != 0) | |
1000 | dev_err(d->dev, "Failed to turn off bias: %d\n", ret); | |
1001 | } | |
1002 | ||
1003 | /* If we just powered up then move to active bias */ | |
1004 | if (d->bias_level == SND_SOC_BIAS_PREPARE && d->dev_power) { | |
1005 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON); | |
1006 | if (ret != 0) | |
1007 | dev_err(d->dev, "Failed to apply active bias: %d\n", | |
1008 | ret); | |
1009 | } | |
1010 | } | |
97404f2e | 1011 | |
2b97eabc RP |
1012 | /* |
1013 | * Scan each dapm widget for complete audio path. | |
1014 | * A complete path is a route that has valid endpoints i.e.:- | |
1015 | * | |
1016 | * o DAC to output pin. | |
1017 | * o Input Pin to ADC. | |
1018 | * o Input pin to Output pin (bypass, sidetone) | |
1019 | * o DAC to ADC (loopback). | |
1020 | */ | |
ce6120cc | 1021 | static int dapm_power_widgets(struct snd_soc_dapm_context *dapm, int event) |
2b97eabc | 1022 | { |
12ea2c78 | 1023 | struct snd_soc_card *card = dapm->card; |
2b97eabc | 1024 | struct snd_soc_dapm_widget *w; |
7be31be8 | 1025 | struct snd_soc_dapm_context *d; |
291f3bbc MB |
1026 | LIST_HEAD(up_list); |
1027 | LIST_HEAD(down_list); | |
9d0624a7 | 1028 | LIST_HEAD(async_domain); |
38357ab2 | 1029 | int power; |
6d3ddc81 | 1030 | |
84e90930 MB |
1031 | trace_snd_soc_dapm_start(card); |
1032 | ||
7be31be8 JN |
1033 | list_for_each_entry(d, &card->dapm_list, list) |
1034 | if (d->n_widgets) | |
1035 | d->dev_power = 0; | |
1036 | ||
6d3ddc81 MB |
1037 | /* Check which widgets we need to power and store them in |
1038 | * lists indicating if they should be powered up or down. | |
1039 | */ | |
97c866de | 1040 | list_for_each_entry(w, &card->widgets, list) { |
6d3ddc81 MB |
1041 | switch (w->id) { |
1042 | case snd_soc_dapm_pre: | |
828a842f | 1043 | dapm_seq_insert(w, &down_list, false); |
6d3ddc81 MB |
1044 | break; |
1045 | case snd_soc_dapm_post: | |
828a842f | 1046 | dapm_seq_insert(w, &up_list, true); |
6d3ddc81 MB |
1047 | break; |
1048 | ||
1049 | default: | |
1050 | if (!w->power_check) | |
1051 | continue; | |
1052 | ||
9949788b | 1053 | if (!w->force) |
50b6bce5 | 1054 | power = w->power_check(w); |
9949788b MB |
1055 | else |
1056 | power = 1; | |
1057 | if (power) | |
7be31be8 | 1058 | w->dapm->dev_power = 1; |
452c5eaa | 1059 | |
6d3ddc81 MB |
1060 | if (w->power == power) |
1061 | continue; | |
1062 | ||
84e90930 MB |
1063 | trace_snd_soc_dapm_widget_power(w, power); |
1064 | ||
6d3ddc81 | 1065 | if (power) |
828a842f | 1066 | dapm_seq_insert(w, &up_list, true); |
6d3ddc81 | 1067 | else |
828a842f | 1068 | dapm_seq_insert(w, &down_list, false); |
6d3ddc81 MB |
1069 | |
1070 | w->power = power; | |
1071 | break; | |
1072 | } | |
2b97eabc RP |
1073 | } |
1074 | ||
b14b76a5 MB |
1075 | /* If there are no DAPM widgets then try to figure out power from the |
1076 | * event type. | |
1077 | */ | |
97c866de | 1078 | if (!dapm->n_widgets) { |
b14b76a5 MB |
1079 | switch (event) { |
1080 | case SND_SOC_DAPM_STREAM_START: | |
1081 | case SND_SOC_DAPM_STREAM_RESUME: | |
7be31be8 | 1082 | dapm->dev_power = 1; |
b14b76a5 | 1083 | break; |
862af8ad | 1084 | case SND_SOC_DAPM_STREAM_STOP: |
7be31be8 | 1085 | dapm->dev_power = !!dapm->codec->active; |
862af8ad | 1086 | break; |
50b6bce5 | 1087 | case SND_SOC_DAPM_STREAM_SUSPEND: |
7be31be8 | 1088 | dapm->dev_power = 0; |
50b6bce5 | 1089 | break; |
b14b76a5 | 1090 | case SND_SOC_DAPM_STREAM_NOP: |
ce6120cc | 1091 | switch (dapm->bias_level) { |
a96ca338 MB |
1092 | case SND_SOC_BIAS_STANDBY: |
1093 | case SND_SOC_BIAS_OFF: | |
7be31be8 | 1094 | dapm->dev_power = 0; |
a96ca338 MB |
1095 | break; |
1096 | default: | |
7be31be8 | 1097 | dapm->dev_power = 1; |
a96ca338 MB |
1098 | break; |
1099 | } | |
50b6bce5 | 1100 | break; |
b14b76a5 MB |
1101 | default: |
1102 | break; | |
1103 | } | |
1104 | } | |
1105 | ||
52ba67bf MB |
1106 | /* Force all contexts in the card to the same bias state */ |
1107 | power = 0; | |
1108 | list_for_each_entry(d, &card->dapm_list, list) | |
1109 | if (d->dev_power) | |
1110 | power = 1; | |
1111 | list_for_each_entry(d, &card->dapm_list, list) | |
1112 | d->dev_power = power; | |
1113 | ||
1114 | ||
9d0624a7 MB |
1115 | /* Run all the bias changes in parallel */ |
1116 | list_for_each_entry(d, &dapm->card->dapm_list, list) | |
1117 | async_schedule_domain(dapm_pre_sequence_async, d, | |
1118 | &async_domain); | |
1119 | async_synchronize_full_domain(&async_domain); | |
452c5eaa | 1120 | |
6d3ddc81 | 1121 | /* Power down widgets first; try to avoid amplifying pops. */ |
828a842f | 1122 | dapm_seq_run(dapm, &down_list, event, false); |
2b97eabc | 1123 | |
97404f2e MB |
1124 | dapm_widget_update(dapm); |
1125 | ||
6d3ddc81 | 1126 | /* Now power up. */ |
828a842f | 1127 | dapm_seq_run(dapm, &up_list, event, true); |
2b97eabc | 1128 | |
9d0624a7 MB |
1129 | /* Run all the bias changes in parallel */ |
1130 | list_for_each_entry(d, &dapm->card->dapm_list, list) | |
1131 | async_schedule_domain(dapm_post_sequence_async, d, | |
1132 | &async_domain); | |
1133 | async_synchronize_full_domain(&async_domain); | |
452c5eaa | 1134 | |
fd8d3bc0 JN |
1135 | pop_dbg(dapm->dev, card->pop_time, |
1136 | "DAPM sequencing finished, waiting %dms\n", card->pop_time); | |
3a45b867 | 1137 | pop_wait(card->pop_time); |
cb507e7e | 1138 | |
84e90930 MB |
1139 | trace_snd_soc_dapm_done(card); |
1140 | ||
42aa3418 | 1141 | return 0; |
2b97eabc RP |
1142 | } |
1143 | ||
79fb9387 MB |
1144 | #ifdef CONFIG_DEBUG_FS |
1145 | static int dapm_widget_power_open_file(struct inode *inode, struct file *file) | |
1146 | { | |
1147 | file->private_data = inode->i_private; | |
1148 | return 0; | |
1149 | } | |
1150 | ||
1151 | static ssize_t dapm_widget_power_read_file(struct file *file, | |
1152 | char __user *user_buf, | |
1153 | size_t count, loff_t *ppos) | |
1154 | { | |
1155 | struct snd_soc_dapm_widget *w = file->private_data; | |
1156 | char *buf; | |
1157 | int in, out; | |
1158 | ssize_t ret; | |
1159 | struct snd_soc_dapm_path *p = NULL; | |
1160 | ||
1161 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); | |
1162 | if (!buf) | |
1163 | return -ENOMEM; | |
1164 | ||
1165 | in = is_connected_input_ep(w); | |
ce6120cc | 1166 | dapm_clear_walk(w->dapm); |
79fb9387 | 1167 | out = is_connected_output_ep(w); |
ce6120cc | 1168 | dapm_clear_walk(w->dapm); |
79fb9387 | 1169 | |
d033c36a | 1170 | ret = snprintf(buf, PAGE_SIZE, "%s: %s in %d out %d", |
79fb9387 MB |
1171 | w->name, w->power ? "On" : "Off", in, out); |
1172 | ||
d033c36a MB |
1173 | if (w->reg >= 0) |
1174 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
1175 | " - R%d(0x%x) bit %d", | |
1176 | w->reg, w->reg, w->shift); | |
1177 | ||
1178 | ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n"); | |
1179 | ||
3eef08ba MB |
1180 | if (w->sname) |
1181 | ret += snprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n", | |
1182 | w->sname, | |
1183 | w->active ? "active" : "inactive"); | |
79fb9387 MB |
1184 | |
1185 | list_for_each_entry(p, &w->sources, list_sink) { | |
215edda3 MB |
1186 | if (p->connected && !p->connected(w, p->sink)) |
1187 | continue; | |
1188 | ||
79fb9387 MB |
1189 | if (p->connect) |
1190 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
67f5ed6e | 1191 | " in \"%s\" \"%s\"\n", |
79fb9387 MB |
1192 | p->name ? p->name : "static", |
1193 | p->source->name); | |
1194 | } | |
1195 | list_for_each_entry(p, &w->sinks, list_source) { | |
215edda3 MB |
1196 | if (p->connected && !p->connected(w, p->sink)) |
1197 | continue; | |
1198 | ||
79fb9387 MB |
1199 | if (p->connect) |
1200 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
67f5ed6e | 1201 | " out \"%s\" \"%s\"\n", |
79fb9387 MB |
1202 | p->name ? p->name : "static", |
1203 | p->sink->name); | |
1204 | } | |
1205 | ||
1206 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); | |
1207 | ||
1208 | kfree(buf); | |
1209 | return ret; | |
1210 | } | |
1211 | ||
1212 | static const struct file_operations dapm_widget_power_fops = { | |
1213 | .open = dapm_widget_power_open_file, | |
1214 | .read = dapm_widget_power_read_file, | |
6038f373 | 1215 | .llseek = default_llseek, |
79fb9387 MB |
1216 | }; |
1217 | ||
ef49e4fa MB |
1218 | static int dapm_bias_open_file(struct inode *inode, struct file *file) |
1219 | { | |
1220 | file->private_data = inode->i_private; | |
1221 | return 0; | |
1222 | } | |
1223 | ||
1224 | static ssize_t dapm_bias_read_file(struct file *file, char __user *user_buf, | |
1225 | size_t count, loff_t *ppos) | |
1226 | { | |
1227 | struct snd_soc_dapm_context *dapm = file->private_data; | |
1228 | char *level; | |
1229 | ||
1230 | switch (dapm->bias_level) { | |
1231 | case SND_SOC_BIAS_ON: | |
1232 | level = "On\n"; | |
1233 | break; | |
1234 | case SND_SOC_BIAS_PREPARE: | |
1235 | level = "Prepare\n"; | |
1236 | break; | |
1237 | case SND_SOC_BIAS_STANDBY: | |
1238 | level = "Standby\n"; | |
1239 | break; | |
1240 | case SND_SOC_BIAS_OFF: | |
1241 | level = "Off\n"; | |
1242 | break; | |
1243 | default: | |
1244 | BUG(); | |
1245 | level = "Unknown\n"; | |
1246 | break; | |
1247 | } | |
1248 | ||
1249 | return simple_read_from_buffer(user_buf, count, ppos, level, | |
1250 | strlen(level)); | |
1251 | } | |
1252 | ||
1253 | static const struct file_operations dapm_bias_fops = { | |
1254 | .open = dapm_bias_open_file, | |
1255 | .read = dapm_bias_read_file, | |
1256 | .llseek = default_llseek, | |
1257 | }; | |
1258 | ||
8eecaf62 LPC |
1259 | void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm, |
1260 | struct dentry *parent) | |
79fb9387 | 1261 | { |
79fb9387 MB |
1262 | struct dentry *d; |
1263 | ||
8eecaf62 LPC |
1264 | dapm->debugfs_dapm = debugfs_create_dir("dapm", parent); |
1265 | ||
1266 | if (!dapm->debugfs_dapm) { | |
1267 | printk(KERN_WARNING | |
1268 | "Failed to create DAPM debugfs directory\n"); | |
79fb9387 | 1269 | return; |
8eecaf62 | 1270 | } |
79fb9387 | 1271 | |
ef49e4fa MB |
1272 | d = debugfs_create_file("bias_level", 0444, |
1273 | dapm->debugfs_dapm, dapm, | |
1274 | &dapm_bias_fops); | |
1275 | if (!d) | |
1276 | dev_warn(dapm->dev, | |
1277 | "ASoC: Failed to create bias level debugfs file\n"); | |
d5d1e0be | 1278 | } |
ef49e4fa | 1279 | |
d5d1e0be LPC |
1280 | static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w) |
1281 | { | |
1282 | struct snd_soc_dapm_context *dapm = w->dapm; | |
1283 | struct dentry *d; | |
79fb9387 | 1284 | |
d5d1e0be LPC |
1285 | if (!dapm->debugfs_dapm || !w->name) |
1286 | return; | |
1287 | ||
1288 | d = debugfs_create_file(w->name, 0444, | |
1289 | dapm->debugfs_dapm, w, | |
1290 | &dapm_widget_power_fops); | |
1291 | if (!d) | |
1292 | dev_warn(w->dapm->dev, | |
1293 | "ASoC: Failed to create %s debugfs file\n", | |
1294 | w->name); | |
79fb9387 | 1295 | } |
d5d1e0be | 1296 | |
6c45e126 LPC |
1297 | static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm) |
1298 | { | |
1299 | debugfs_remove_recursive(dapm->debugfs_dapm); | |
1300 | } | |
1301 | ||
79fb9387 | 1302 | #else |
8eecaf62 LPC |
1303 | void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm, |
1304 | struct dentry *parent) | |
79fb9387 MB |
1305 | { |
1306 | } | |
d5d1e0be LPC |
1307 | |
1308 | static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w) | |
1309 | { | |
1310 | } | |
1311 | ||
6c45e126 LPC |
1312 | static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm) |
1313 | { | |
1314 | } | |
1315 | ||
79fb9387 MB |
1316 | #endif |
1317 | ||
2b97eabc | 1318 | /* test and update the power status of a mux widget */ |
d9c96cf3 | 1319 | static int dapm_mux_update_power(struct snd_soc_dapm_widget *widget, |
3a65577d MB |
1320 | struct snd_kcontrol *kcontrol, int change, |
1321 | int mux, struct soc_enum *e) | |
2b97eabc RP |
1322 | { |
1323 | struct snd_soc_dapm_path *path; | |
1324 | int found = 0; | |
1325 | ||
eff317d0 | 1326 | if (widget->id != snd_soc_dapm_mux && |
24ff33ac | 1327 | widget->id != snd_soc_dapm_virt_mux && |
eff317d0 | 1328 | widget->id != snd_soc_dapm_value_mux) |
2b97eabc RP |
1329 | return -ENODEV; |
1330 | ||
3a65577d | 1331 | if (!change) |
2b97eabc RP |
1332 | return 0; |
1333 | ||
1334 | /* find dapm widget path assoc with kcontrol */ | |
8ddab3f5 | 1335 | list_for_each_entry(path, &widget->dapm->card->paths, list) { |
2b97eabc RP |
1336 | if (path->kcontrol != kcontrol) |
1337 | continue; | |
1338 | ||
cb01e2b9 | 1339 | if (!path->name || !e->texts[mux]) |
2b97eabc RP |
1340 | continue; |
1341 | ||
1342 | found = 1; | |
1343 | /* we now need to match the string in the enum to the path */ | |
cb01e2b9 | 1344 | if (!(strcmp(path->name, e->texts[mux]))) |
2b97eabc RP |
1345 | path->connect = 1; /* new connection */ |
1346 | else | |
1347 | path->connect = 0; /* old connection must be powered down */ | |
1348 | } | |
1349 | ||
b91b8fa0 | 1350 | if (found) |
ce6120cc | 1351 | dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc RP |
1352 | |
1353 | return 0; | |
1354 | } | |
2b97eabc | 1355 | |
1b075e3f | 1356 | /* test and update the power status of a mixer or switch widget */ |
d9c96cf3 | 1357 | static int dapm_mixer_update_power(struct snd_soc_dapm_widget *widget, |
283375ce | 1358 | struct snd_kcontrol *kcontrol, int connect) |
2b97eabc RP |
1359 | { |
1360 | struct snd_soc_dapm_path *path; | |
1361 | int found = 0; | |
1362 | ||
1b075e3f | 1363 | if (widget->id != snd_soc_dapm_mixer && |
ca9c1aae | 1364 | widget->id != snd_soc_dapm_mixer_named_ctl && |
1b075e3f | 1365 | widget->id != snd_soc_dapm_switch) |
2b97eabc RP |
1366 | return -ENODEV; |
1367 | ||
2b97eabc | 1368 | /* find dapm widget path assoc with kcontrol */ |
8ddab3f5 | 1369 | list_for_each_entry(path, &widget->dapm->card->paths, list) { |
2b97eabc RP |
1370 | if (path->kcontrol != kcontrol) |
1371 | continue; | |
1372 | ||
1373 | /* found, now check type */ | |
1374 | found = 1; | |
283375ce | 1375 | path->connect = connect; |
2b97eabc RP |
1376 | break; |
1377 | } | |
1378 | ||
b91b8fa0 | 1379 | if (found) |
ce6120cc | 1380 | dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc RP |
1381 | |
1382 | return 0; | |
1383 | } | |
2b97eabc RP |
1384 | |
1385 | /* show dapm widget status in sys fs */ | |
1386 | static ssize_t dapm_widget_show(struct device *dev, | |
1387 | struct device_attribute *attr, char *buf) | |
1388 | { | |
f0fba2ad LG |
1389 | struct snd_soc_pcm_runtime *rtd = |
1390 | container_of(dev, struct snd_soc_pcm_runtime, dev); | |
1391 | struct snd_soc_codec *codec =rtd->codec; | |
2b97eabc RP |
1392 | struct snd_soc_dapm_widget *w; |
1393 | int count = 0; | |
1394 | char *state = "not set"; | |
1395 | ||
97c866de JN |
1396 | list_for_each_entry(w, &codec->card->widgets, list) { |
1397 | if (w->dapm != &codec->dapm) | |
1398 | continue; | |
2b97eabc RP |
1399 | |
1400 | /* only display widgets that burnm power */ | |
1401 | switch (w->id) { | |
1402 | case snd_soc_dapm_hp: | |
1403 | case snd_soc_dapm_mic: | |
1404 | case snd_soc_dapm_spk: | |
1405 | case snd_soc_dapm_line: | |
1406 | case snd_soc_dapm_micbias: | |
1407 | case snd_soc_dapm_dac: | |
1408 | case snd_soc_dapm_adc: | |
1409 | case snd_soc_dapm_pga: | |
d88429a6 | 1410 | case snd_soc_dapm_out_drv: |
2b97eabc | 1411 | case snd_soc_dapm_mixer: |
ca9c1aae | 1412 | case snd_soc_dapm_mixer_named_ctl: |
246d0a17 | 1413 | case snd_soc_dapm_supply: |
2b97eabc RP |
1414 | if (w->name) |
1415 | count += sprintf(buf + count, "%s: %s\n", | |
1416 | w->name, w->power ? "On":"Off"); | |
1417 | break; | |
1418 | default: | |
1419 | break; | |
1420 | } | |
1421 | } | |
1422 | ||
ce6120cc | 1423 | switch (codec->dapm.bias_level) { |
0be9898a MB |
1424 | case SND_SOC_BIAS_ON: |
1425 | state = "On"; | |
2b97eabc | 1426 | break; |
0be9898a MB |
1427 | case SND_SOC_BIAS_PREPARE: |
1428 | state = "Prepare"; | |
2b97eabc | 1429 | break; |
0be9898a MB |
1430 | case SND_SOC_BIAS_STANDBY: |
1431 | state = "Standby"; | |
2b97eabc | 1432 | break; |
0be9898a MB |
1433 | case SND_SOC_BIAS_OFF: |
1434 | state = "Off"; | |
2b97eabc RP |
1435 | break; |
1436 | } | |
1437 | count += sprintf(buf + count, "PM State: %s\n", state); | |
1438 | ||
1439 | return count; | |
1440 | } | |
1441 | ||
1442 | static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL); | |
1443 | ||
1444 | int snd_soc_dapm_sys_add(struct device *dev) | |
1445 | { | |
12ef193d | 1446 | return device_create_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1447 | } |
1448 | ||
1449 | static void snd_soc_dapm_sys_remove(struct device *dev) | |
1450 | { | |
aef90843 | 1451 | device_remove_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1452 | } |
1453 | ||
1454 | /* free all dapm widgets and resources */ | |
ce6120cc | 1455 | static void dapm_free_widgets(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
1456 | { |
1457 | struct snd_soc_dapm_widget *w, *next_w; | |
1458 | struct snd_soc_dapm_path *p, *next_p; | |
1459 | ||
97c866de JN |
1460 | list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) { |
1461 | if (w->dapm != dapm) | |
1462 | continue; | |
2b97eabc | 1463 | list_del(&w->list); |
8ddab3f5 JN |
1464 | /* |
1465 | * remove source and sink paths associated to this widget. | |
1466 | * While removing the path, remove reference to it from both | |
1467 | * source and sink widgets so that path is removed only once. | |
1468 | */ | |
1469 | list_for_each_entry_safe(p, next_p, &w->sources, list_sink) { | |
1470 | list_del(&p->list_sink); | |
1471 | list_del(&p->list_source); | |
1472 | list_del(&p->list); | |
1473 | kfree(p->long_name); | |
1474 | kfree(p); | |
1475 | } | |
1476 | list_for_each_entry_safe(p, next_p, &w->sinks, list_source) { | |
1477 | list_del(&p->list_sink); | |
1478 | list_del(&p->list_source); | |
1479 | list_del(&p->list); | |
1480 | kfree(p->long_name); | |
1481 | kfree(p); | |
1482 | } | |
ead9b919 | 1483 | kfree(w->name); |
2b97eabc RP |
1484 | kfree(w); |
1485 | } | |
2b97eabc RP |
1486 | } |
1487 | ||
91a5fca4 LPC |
1488 | static struct snd_soc_dapm_widget *dapm_find_widget( |
1489 | struct snd_soc_dapm_context *dapm, const char *pin, | |
1490 | bool search_other_contexts) | |
a5302181 LG |
1491 | { |
1492 | struct snd_soc_dapm_widget *w; | |
91a5fca4 | 1493 | struct snd_soc_dapm_widget *fallback = NULL; |
a5302181 | 1494 | |
97c866de | 1495 | list_for_each_entry(w, &dapm->card->widgets, list) { |
a5302181 | 1496 | if (!strcmp(w->name, pin)) { |
91a5fca4 LPC |
1497 | if (w->dapm == dapm) |
1498 | return w; | |
1499 | else | |
1500 | fallback = w; | |
a5302181 LG |
1501 | } |
1502 | } | |
1503 | ||
91a5fca4 LPC |
1504 | if (search_other_contexts) |
1505 | return fallback; | |
1506 | ||
1507 | return NULL; | |
1508 | } | |
1509 | ||
1510 | static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm, | |
1511 | const char *pin, int status) | |
1512 | { | |
1513 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); | |
1514 | ||
1515 | if (!w) { | |
1516 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); | |
1517 | return -EINVAL; | |
0d86733c MB |
1518 | } |
1519 | ||
91a5fca4 LPC |
1520 | w->connected = status; |
1521 | if (status == 0) | |
1522 | w->force = 0; | |
1523 | ||
1524 | return 0; | |
a5302181 LG |
1525 | } |
1526 | ||
2b97eabc | 1527 | /** |
a5302181 | 1528 | * snd_soc_dapm_sync - scan and power dapm paths |
ce6120cc | 1529 | * @dapm: DAPM context |
2b97eabc RP |
1530 | * |
1531 | * Walks all dapm audio paths and powers widgets according to their | |
1532 | * stream or path usage. | |
1533 | * | |
1534 | * Returns 0 for success. | |
1535 | */ | |
ce6120cc | 1536 | int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm) |
2b97eabc | 1537 | { |
ce6120cc | 1538 | return dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc | 1539 | } |
a5302181 | 1540 | EXPORT_SYMBOL_GPL(snd_soc_dapm_sync); |
2b97eabc | 1541 | |
ce6120cc | 1542 | static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm, |
215edda3 | 1543 | const struct snd_soc_dapm_route *route) |
2b97eabc RP |
1544 | { |
1545 | struct snd_soc_dapm_path *path; | |
1546 | struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w; | |
97c866de | 1547 | struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL; |
ead9b919 | 1548 | const char *sink; |
215edda3 | 1549 | const char *control = route->control; |
ead9b919 JN |
1550 | const char *source; |
1551 | char prefixed_sink[80]; | |
1552 | char prefixed_source[80]; | |
2b97eabc RP |
1553 | int ret = 0; |
1554 | ||
88e8b9a8 | 1555 | if (dapm->codec && dapm->codec->name_prefix) { |
ead9b919 JN |
1556 | snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s", |
1557 | dapm->codec->name_prefix, route->sink); | |
1558 | sink = prefixed_sink; | |
1559 | snprintf(prefixed_source, sizeof(prefixed_source), "%s %s", | |
1560 | dapm->codec->name_prefix, route->source); | |
1561 | source = prefixed_source; | |
1562 | } else { | |
1563 | sink = route->sink; | |
1564 | source = route->source; | |
1565 | } | |
1566 | ||
97c866de JN |
1567 | /* |
1568 | * find src and dest widgets over all widgets but favor a widget from | |
1569 | * current DAPM context | |
1570 | */ | |
1571 | list_for_each_entry(w, &dapm->card->widgets, list) { | |
2b97eabc | 1572 | if (!wsink && !(strcmp(w->name, sink))) { |
97c866de JN |
1573 | wtsink = w; |
1574 | if (w->dapm == dapm) | |
1575 | wsink = w; | |
2b97eabc RP |
1576 | continue; |
1577 | } | |
1578 | if (!wsource && !(strcmp(w->name, source))) { | |
97c866de JN |
1579 | wtsource = w; |
1580 | if (w->dapm == dapm) | |
1581 | wsource = w; | |
2b97eabc RP |
1582 | } |
1583 | } | |
97c866de JN |
1584 | /* use widget from another DAPM context if not found from this */ |
1585 | if (!wsink) | |
1586 | wsink = wtsink; | |
1587 | if (!wsource) | |
1588 | wsource = wtsource; | |
2b97eabc RP |
1589 | |
1590 | if (wsource == NULL || wsink == NULL) | |
1591 | return -ENODEV; | |
1592 | ||
1593 | path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL); | |
1594 | if (!path) | |
1595 | return -ENOMEM; | |
1596 | ||
1597 | path->source = wsource; | |
1598 | path->sink = wsink; | |
215edda3 | 1599 | path->connected = route->connected; |
2b97eabc RP |
1600 | INIT_LIST_HEAD(&path->list); |
1601 | INIT_LIST_HEAD(&path->list_source); | |
1602 | INIT_LIST_HEAD(&path->list_sink); | |
1603 | ||
1604 | /* check for external widgets */ | |
1605 | if (wsink->id == snd_soc_dapm_input) { | |
1606 | if (wsource->id == snd_soc_dapm_micbias || | |
1607 | wsource->id == snd_soc_dapm_mic || | |
087d53ab RC |
1608 | wsource->id == snd_soc_dapm_line || |
1609 | wsource->id == snd_soc_dapm_output) | |
2b97eabc RP |
1610 | wsink->ext = 1; |
1611 | } | |
1612 | if (wsource->id == snd_soc_dapm_output) { | |
1613 | if (wsink->id == snd_soc_dapm_spk || | |
1614 | wsink->id == snd_soc_dapm_hp || | |
1e39221e SF |
1615 | wsink->id == snd_soc_dapm_line || |
1616 | wsink->id == snd_soc_dapm_input) | |
2b97eabc RP |
1617 | wsource->ext = 1; |
1618 | } | |
1619 | ||
1620 | /* connect static paths */ | |
1621 | if (control == NULL) { | |
8ddab3f5 | 1622 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
1623 | list_add(&path->list_sink, &wsink->sources); |
1624 | list_add(&path->list_source, &wsource->sinks); | |
1625 | path->connect = 1; | |
1626 | return 0; | |
1627 | } | |
1628 | ||
1629 | /* connect dynamic paths */ | |
dc2bea61 | 1630 | switch (wsink->id) { |
2b97eabc RP |
1631 | case snd_soc_dapm_adc: |
1632 | case snd_soc_dapm_dac: | |
1633 | case snd_soc_dapm_pga: | |
d88429a6 | 1634 | case snd_soc_dapm_out_drv: |
2b97eabc RP |
1635 | case snd_soc_dapm_input: |
1636 | case snd_soc_dapm_output: | |
1637 | case snd_soc_dapm_micbias: | |
1638 | case snd_soc_dapm_vmid: | |
1639 | case snd_soc_dapm_pre: | |
1640 | case snd_soc_dapm_post: | |
246d0a17 | 1641 | case snd_soc_dapm_supply: |
010ff262 MB |
1642 | case snd_soc_dapm_aif_in: |
1643 | case snd_soc_dapm_aif_out: | |
8ddab3f5 | 1644 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
1645 | list_add(&path->list_sink, &wsink->sources); |
1646 | list_add(&path->list_source, &wsource->sinks); | |
1647 | path->connect = 1; | |
1648 | return 0; | |
1649 | case snd_soc_dapm_mux: | |
24ff33ac | 1650 | case snd_soc_dapm_virt_mux: |
74155556 | 1651 | case snd_soc_dapm_value_mux: |
ce6120cc | 1652 | ret = dapm_connect_mux(dapm, wsource, wsink, path, control, |
82cfecdc | 1653 | &wsink->kcontrol_news[0]); |
2b97eabc RP |
1654 | if (ret != 0) |
1655 | goto err; | |
1656 | break; | |
1657 | case snd_soc_dapm_switch: | |
1658 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1659 | case snd_soc_dapm_mixer_named_ctl: |
ce6120cc | 1660 | ret = dapm_connect_mixer(dapm, wsource, wsink, path, control); |
2b97eabc RP |
1661 | if (ret != 0) |
1662 | goto err; | |
1663 | break; | |
1664 | case snd_soc_dapm_hp: | |
1665 | case snd_soc_dapm_mic: | |
1666 | case snd_soc_dapm_line: | |
1667 | case snd_soc_dapm_spk: | |
8ddab3f5 | 1668 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
1669 | list_add(&path->list_sink, &wsink->sources); |
1670 | list_add(&path->list_source, &wsource->sinks); | |
1671 | path->connect = 0; | |
1672 | return 0; | |
1673 | } | |
1674 | return 0; | |
1675 | ||
1676 | err: | |
f7d41ae8 JN |
1677 | dev_warn(dapm->dev, "asoc: no dapm match for %s --> %s --> %s\n", |
1678 | source, control, sink); | |
2b97eabc RP |
1679 | kfree(path); |
1680 | return ret; | |
1681 | } | |
105f1c28 | 1682 | |
105f1c28 MB |
1683 | /** |
1684 | * snd_soc_dapm_add_routes - Add routes between DAPM widgets | |
ce6120cc | 1685 | * @dapm: DAPM context |
105f1c28 MB |
1686 | * @route: audio routes |
1687 | * @num: number of routes | |
1688 | * | |
1689 | * Connects 2 dapm widgets together via a named audio path. The sink is | |
1690 | * the widget receiving the audio signal, whilst the source is the sender | |
1691 | * of the audio signal. | |
1692 | * | |
1693 | * Returns 0 for success else error. On error all resources can be freed | |
1694 | * with a call to snd_soc_card_free(). | |
1695 | */ | |
ce6120cc | 1696 | int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm, |
105f1c28 MB |
1697 | const struct snd_soc_dapm_route *route, int num) |
1698 | { | |
1699 | int i, ret; | |
1700 | ||
1701 | for (i = 0; i < num; i++) { | |
ce6120cc | 1702 | ret = snd_soc_dapm_add_route(dapm, route); |
105f1c28 | 1703 | if (ret < 0) { |
f7d41ae8 JN |
1704 | dev_err(dapm->dev, "Failed to add route %s->%s\n", |
1705 | route->source, route->sink); | |
105f1c28 MB |
1706 | return ret; |
1707 | } | |
1708 | route++; | |
1709 | } | |
1710 | ||
1711 | return 0; | |
1712 | } | |
1713 | EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes); | |
1714 | ||
2b97eabc RP |
1715 | /** |
1716 | * snd_soc_dapm_new_widgets - add new dapm widgets | |
ce6120cc | 1717 | * @dapm: DAPM context |
2b97eabc RP |
1718 | * |
1719 | * Checks the codec for any new dapm widgets and creates them if found. | |
1720 | * | |
1721 | * Returns 0 for success. | |
1722 | */ | |
ce6120cc | 1723 | int snd_soc_dapm_new_widgets(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
1724 | { |
1725 | struct snd_soc_dapm_widget *w; | |
b66a70d5 | 1726 | unsigned int val; |
2b97eabc | 1727 | |
97c866de | 1728 | list_for_each_entry(w, &dapm->card->widgets, list) |
2b97eabc RP |
1729 | { |
1730 | if (w->new) | |
1731 | continue; | |
1732 | ||
1733 | switch(w->id) { | |
1734 | case snd_soc_dapm_switch: | |
1735 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1736 | case snd_soc_dapm_mixer_named_ctl: |
b75576d7 | 1737 | w->power_check = dapm_generic_check_power; |
ce6120cc | 1738 | dapm_new_mixer(dapm, w); |
2b97eabc RP |
1739 | break; |
1740 | case snd_soc_dapm_mux: | |
24ff33ac | 1741 | case snd_soc_dapm_virt_mux: |
2e72f8e3 | 1742 | case snd_soc_dapm_value_mux: |
b75576d7 | 1743 | w->power_check = dapm_generic_check_power; |
ce6120cc | 1744 | dapm_new_mux(dapm, w); |
2b97eabc RP |
1745 | break; |
1746 | case snd_soc_dapm_adc: | |
010ff262 | 1747 | case snd_soc_dapm_aif_out: |
b75576d7 MB |
1748 | w->power_check = dapm_adc_check_power; |
1749 | break; | |
2b97eabc | 1750 | case snd_soc_dapm_dac: |
010ff262 | 1751 | case snd_soc_dapm_aif_in: |
b75576d7 MB |
1752 | w->power_check = dapm_dac_check_power; |
1753 | break; | |
2b97eabc | 1754 | case snd_soc_dapm_pga: |
d88429a6 | 1755 | case snd_soc_dapm_out_drv: |
b75576d7 | 1756 | w->power_check = dapm_generic_check_power; |
ce6120cc | 1757 | dapm_new_pga(dapm, w); |
2b97eabc RP |
1758 | break; |
1759 | case snd_soc_dapm_input: | |
1760 | case snd_soc_dapm_output: | |
1761 | case snd_soc_dapm_micbias: | |
1762 | case snd_soc_dapm_spk: | |
1763 | case snd_soc_dapm_hp: | |
1764 | case snd_soc_dapm_mic: | |
1765 | case snd_soc_dapm_line: | |
b75576d7 MB |
1766 | w->power_check = dapm_generic_check_power; |
1767 | break; | |
246d0a17 MB |
1768 | case snd_soc_dapm_supply: |
1769 | w->power_check = dapm_supply_check_power; | |
2b97eabc RP |
1770 | case snd_soc_dapm_vmid: |
1771 | case snd_soc_dapm_pre: | |
1772 | case snd_soc_dapm_post: | |
1773 | break; | |
1774 | } | |
b66a70d5 MB |
1775 | |
1776 | /* Read the initial power state from the device */ | |
1777 | if (w->reg >= 0) { | |
1778 | val = snd_soc_read(w->codec, w->reg); | |
1779 | val &= 1 << w->shift; | |
1780 | if (w->invert) | |
1781 | val = !val; | |
1782 | ||
1783 | if (val) | |
1784 | w->power = 1; | |
1785 | } | |
1786 | ||
2b97eabc | 1787 | w->new = 1; |
d5d1e0be LPC |
1788 | |
1789 | dapm_debugfs_add_widget(w); | |
2b97eabc RP |
1790 | } |
1791 | ||
ce6120cc | 1792 | dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc RP |
1793 | return 0; |
1794 | } | |
1795 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets); | |
1796 | ||
1797 | /** | |
1798 | * snd_soc_dapm_get_volsw - dapm mixer get callback | |
1799 | * @kcontrol: mixer control | |
ac11a2b3 | 1800 | * @ucontrol: control element information |
2b97eabc RP |
1801 | * |
1802 | * Callback to get the value of a dapm mixer control. | |
1803 | * | |
1804 | * Returns 0 for success. | |
1805 | */ | |
1806 | int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol, | |
1807 | struct snd_ctl_elem_value *ucontrol) | |
1808 | { | |
1809 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
4eaa9819 JS |
1810 | struct soc_mixer_control *mc = |
1811 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
1812 | unsigned int reg = mc->reg; |
1813 | unsigned int shift = mc->shift; | |
1814 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1815 | int max = mc->max; |
815ecf8d JS |
1816 | unsigned int invert = mc->invert; |
1817 | unsigned int mask = (1 << fls(max)) - 1; | |
2b97eabc | 1818 | |
2b97eabc RP |
1819 | ucontrol->value.integer.value[0] = |
1820 | (snd_soc_read(widget->codec, reg) >> shift) & mask; | |
1821 | if (shift != rshift) | |
1822 | ucontrol->value.integer.value[1] = | |
1823 | (snd_soc_read(widget->codec, reg) >> rshift) & mask; | |
1824 | if (invert) { | |
1825 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1826 | max - ucontrol->value.integer.value[0]; |
2b97eabc RP |
1827 | if (shift != rshift) |
1828 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 1829 | max - ucontrol->value.integer.value[1]; |
2b97eabc RP |
1830 | } |
1831 | ||
1832 | return 0; | |
1833 | } | |
1834 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw); | |
1835 | ||
1836 | /** | |
1837 | * snd_soc_dapm_put_volsw - dapm mixer set callback | |
1838 | * @kcontrol: mixer control | |
ac11a2b3 | 1839 | * @ucontrol: control element information |
2b97eabc RP |
1840 | * |
1841 | * Callback to set the value of a dapm mixer control. | |
1842 | * | |
1843 | * Returns 0 for success. | |
1844 | */ | |
1845 | int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, | |
1846 | struct snd_ctl_elem_value *ucontrol) | |
1847 | { | |
1848 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
4eaa9819 JS |
1849 | struct soc_mixer_control *mc = |
1850 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
1851 | unsigned int reg = mc->reg; |
1852 | unsigned int shift = mc->shift; | |
4eaa9819 | 1853 | int max = mc->max; |
815ecf8d JS |
1854 | unsigned int mask = (1 << fls(max)) - 1; |
1855 | unsigned int invert = mc->invert; | |
e9cf7049 | 1856 | unsigned int val; |
97404f2e MB |
1857 | int connect, change; |
1858 | struct snd_soc_dapm_update update; | |
2b97eabc RP |
1859 | |
1860 | val = (ucontrol->value.integer.value[0] & mask); | |
1861 | ||
1862 | if (invert) | |
a7a4ac86 | 1863 | val = max - val; |
e9cf7049 | 1864 | mask = mask << shift; |
2b97eabc | 1865 | val = val << shift; |
2b97eabc RP |
1866 | |
1867 | mutex_lock(&widget->codec->mutex); | |
1868 | widget->value = val; | |
1869 | ||
e9cf7049 | 1870 | change = snd_soc_test_bits(widget->codec, reg, mask, val); |
97404f2e | 1871 | if (change) { |
283375ce MB |
1872 | if (val) |
1873 | /* new connection */ | |
1874 | connect = invert ? 0:1; | |
1875 | else | |
1876 | /* old connection must be powered down */ | |
1877 | connect = invert ? 1:0; | |
1878 | ||
97404f2e MB |
1879 | update.kcontrol = kcontrol; |
1880 | update.widget = widget; | |
1881 | update.reg = reg; | |
1882 | update.mask = mask; | |
1883 | update.val = val; | |
1884 | widget->dapm->update = &update; | |
1885 | ||
283375ce | 1886 | dapm_mixer_update_power(widget, kcontrol, connect); |
97404f2e MB |
1887 | |
1888 | widget->dapm->update = NULL; | |
283375ce MB |
1889 | } |
1890 | ||
2b97eabc | 1891 | mutex_unlock(&widget->codec->mutex); |
97404f2e | 1892 | return 0; |
2b97eabc RP |
1893 | } |
1894 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw); | |
1895 | ||
1896 | /** | |
1897 | * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback | |
1898 | * @kcontrol: mixer control | |
ac11a2b3 | 1899 | * @ucontrol: control element information |
2b97eabc RP |
1900 | * |
1901 | * Callback to get the value of a dapm enumerated double mixer control. | |
1902 | * | |
1903 | * Returns 0 for success. | |
1904 | */ | |
1905 | int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol, | |
1906 | struct snd_ctl_elem_value *ucontrol) | |
1907 | { | |
1908 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1909 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
46f5822f | 1910 | unsigned int val, bitmask; |
2b97eabc | 1911 | |
f8ba0b7b | 1912 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
1913 | ; |
1914 | val = snd_soc_read(widget->codec, e->reg); | |
1915 | ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1); | |
1916 | if (e->shift_l != e->shift_r) | |
1917 | ucontrol->value.enumerated.item[1] = | |
1918 | (val >> e->shift_r) & (bitmask - 1); | |
1919 | ||
1920 | return 0; | |
1921 | } | |
1922 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double); | |
1923 | ||
1924 | /** | |
1925 | * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback | |
1926 | * @kcontrol: mixer control | |
ac11a2b3 | 1927 | * @ucontrol: control element information |
2b97eabc RP |
1928 | * |
1929 | * Callback to set the value of a dapm enumerated double mixer control. | |
1930 | * | |
1931 | * Returns 0 for success. | |
1932 | */ | |
1933 | int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, | |
1934 | struct snd_ctl_elem_value *ucontrol) | |
1935 | { | |
1936 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1937 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
3a65577d | 1938 | unsigned int val, mux, change; |
46f5822f | 1939 | unsigned int mask, bitmask; |
97404f2e | 1940 | struct snd_soc_dapm_update update; |
2b97eabc | 1941 | |
f8ba0b7b | 1942 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc | 1943 | ; |
f8ba0b7b | 1944 | if (ucontrol->value.enumerated.item[0] > e->max - 1) |
2b97eabc RP |
1945 | return -EINVAL; |
1946 | mux = ucontrol->value.enumerated.item[0]; | |
1947 | val = mux << e->shift_l; | |
1948 | mask = (bitmask - 1) << e->shift_l; | |
1949 | if (e->shift_l != e->shift_r) { | |
f8ba0b7b | 1950 | if (ucontrol->value.enumerated.item[1] > e->max - 1) |
2b97eabc RP |
1951 | return -EINVAL; |
1952 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
1953 | mask |= (bitmask - 1) << e->shift_r; | |
1954 | } | |
1955 | ||
1956 | mutex_lock(&widget->codec->mutex); | |
1957 | widget->value = val; | |
3a65577d | 1958 | change = snd_soc_test_bits(widget->codec, e->reg, mask, val); |
1642e3d4 | 1959 | |
97404f2e MB |
1960 | update.kcontrol = kcontrol; |
1961 | update.widget = widget; | |
1962 | update.reg = e->reg; | |
1963 | update.mask = mask; | |
1964 | update.val = val; | |
1965 | widget->dapm->update = &update; | |
1642e3d4 | 1966 | |
97404f2e | 1967 | dapm_mux_update_power(widget, kcontrol, change, mux, e); |
1642e3d4 | 1968 | |
97404f2e | 1969 | widget->dapm->update = NULL; |
2b97eabc | 1970 | |
2b97eabc | 1971 | mutex_unlock(&widget->codec->mutex); |
97404f2e | 1972 | return change; |
2b97eabc RP |
1973 | } |
1974 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double); | |
1975 | ||
d2b247a8 MB |
1976 | /** |
1977 | * snd_soc_dapm_get_enum_virt - Get virtual DAPM mux | |
1978 | * @kcontrol: mixer control | |
1979 | * @ucontrol: control element information | |
1980 | * | |
1981 | * Returns 0 for success. | |
1982 | */ | |
1983 | int snd_soc_dapm_get_enum_virt(struct snd_kcontrol *kcontrol, | |
1984 | struct snd_ctl_elem_value *ucontrol) | |
1985 | { | |
1986 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1987 | ||
1988 | ucontrol->value.enumerated.item[0] = widget->value; | |
1989 | ||
1990 | return 0; | |
1991 | } | |
1992 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_virt); | |
1993 | ||
1994 | /** | |
1995 | * snd_soc_dapm_put_enum_virt - Set virtual DAPM mux | |
1996 | * @kcontrol: mixer control | |
1997 | * @ucontrol: control element information | |
1998 | * | |
1999 | * Returns 0 for success. | |
2000 | */ | |
2001 | int snd_soc_dapm_put_enum_virt(struct snd_kcontrol *kcontrol, | |
2002 | struct snd_ctl_elem_value *ucontrol) | |
2003 | { | |
2004 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
2005 | struct soc_enum *e = | |
2006 | (struct soc_enum *)kcontrol->private_value; | |
2007 | int change; | |
2008 | int ret = 0; | |
2009 | ||
2010 | if (ucontrol->value.enumerated.item[0] >= e->max) | |
2011 | return -EINVAL; | |
2012 | ||
2013 | mutex_lock(&widget->codec->mutex); | |
2014 | ||
2015 | change = widget->value != ucontrol->value.enumerated.item[0]; | |
2016 | widget->value = ucontrol->value.enumerated.item[0]; | |
2017 | dapm_mux_update_power(widget, kcontrol, change, widget->value, e); | |
2018 | ||
2019 | mutex_unlock(&widget->codec->mutex); | |
2020 | return ret; | |
2021 | } | |
2022 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt); | |
2023 | ||
2e72f8e3 PU |
2024 | /** |
2025 | * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get | |
2026 | * callback | |
2027 | * @kcontrol: mixer control | |
2028 | * @ucontrol: control element information | |
2029 | * | |
2030 | * Callback to get the value of a dapm semi enumerated double mixer control. | |
2031 | * | |
2032 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
2033 | * used for handling bitfield coded enumeration for example. | |
2034 | * | |
2035 | * Returns 0 for success. | |
2036 | */ | |
2037 | int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol *kcontrol, | |
2038 | struct snd_ctl_elem_value *ucontrol) | |
2039 | { | |
2040 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
74155556 | 2041 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f | 2042 | unsigned int reg_val, val, mux; |
2e72f8e3 PU |
2043 | |
2044 | reg_val = snd_soc_read(widget->codec, e->reg); | |
2045 | val = (reg_val >> e->shift_l) & e->mask; | |
2046 | for (mux = 0; mux < e->max; mux++) { | |
2047 | if (val == e->values[mux]) | |
2048 | break; | |
2049 | } | |
2050 | ucontrol->value.enumerated.item[0] = mux; | |
2051 | if (e->shift_l != e->shift_r) { | |
2052 | val = (reg_val >> e->shift_r) & e->mask; | |
2053 | for (mux = 0; mux < e->max; mux++) { | |
2054 | if (val == e->values[mux]) | |
2055 | break; | |
2056 | } | |
2057 | ucontrol->value.enumerated.item[1] = mux; | |
2058 | } | |
2059 | ||
2060 | return 0; | |
2061 | } | |
2062 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double); | |
2063 | ||
2064 | /** | |
2065 | * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set | |
2066 | * callback | |
2067 | * @kcontrol: mixer control | |
2068 | * @ucontrol: control element information | |
2069 | * | |
2070 | * Callback to set the value of a dapm semi enumerated double mixer control. | |
2071 | * | |
2072 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
2073 | * used for handling bitfield coded enumeration for example. | |
2074 | * | |
2075 | * Returns 0 for success. | |
2076 | */ | |
2077 | int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol, | |
2078 | struct snd_ctl_elem_value *ucontrol) | |
2079 | { | |
2080 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
74155556 | 2081 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
3a65577d | 2082 | unsigned int val, mux, change; |
46f5822f | 2083 | unsigned int mask; |
97404f2e | 2084 | struct snd_soc_dapm_update update; |
2e72f8e3 PU |
2085 | |
2086 | if (ucontrol->value.enumerated.item[0] > e->max - 1) | |
2087 | return -EINVAL; | |
2088 | mux = ucontrol->value.enumerated.item[0]; | |
2089 | val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l; | |
2090 | mask = e->mask << e->shift_l; | |
2091 | if (e->shift_l != e->shift_r) { | |
2092 | if (ucontrol->value.enumerated.item[1] > e->max - 1) | |
2093 | return -EINVAL; | |
2094 | val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r; | |
2095 | mask |= e->mask << e->shift_r; | |
2096 | } | |
2097 | ||
2098 | mutex_lock(&widget->codec->mutex); | |
2099 | widget->value = val; | |
3a65577d | 2100 | change = snd_soc_test_bits(widget->codec, e->reg, mask, val); |
1642e3d4 | 2101 | |
97404f2e MB |
2102 | update.kcontrol = kcontrol; |
2103 | update.widget = widget; | |
2104 | update.reg = e->reg; | |
2105 | update.mask = mask; | |
2106 | update.val = val; | |
2107 | widget->dapm->update = &update; | |
1642e3d4 | 2108 | |
97404f2e | 2109 | dapm_mux_update_power(widget, kcontrol, change, mux, e); |
1642e3d4 | 2110 | |
97404f2e | 2111 | widget->dapm->update = NULL; |
2e72f8e3 | 2112 | |
2e72f8e3 | 2113 | mutex_unlock(&widget->codec->mutex); |
97404f2e | 2114 | return change; |
2e72f8e3 PU |
2115 | } |
2116 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double); | |
2117 | ||
8b37dbd2 MB |
2118 | /** |
2119 | * snd_soc_dapm_info_pin_switch - Info for a pin switch | |
2120 | * | |
2121 | * @kcontrol: mixer control | |
2122 | * @uinfo: control element information | |
2123 | * | |
2124 | * Callback to provide information about a pin switch control. | |
2125 | */ | |
2126 | int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol, | |
2127 | struct snd_ctl_elem_info *uinfo) | |
2128 | { | |
2129 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
2130 | uinfo->count = 1; | |
2131 | uinfo->value.integer.min = 0; | |
2132 | uinfo->value.integer.max = 1; | |
2133 | ||
2134 | return 0; | |
2135 | } | |
2136 | EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch); | |
2137 | ||
2138 | /** | |
2139 | * snd_soc_dapm_get_pin_switch - Get information for a pin switch | |
2140 | * | |
2141 | * @kcontrol: mixer control | |
2142 | * @ucontrol: Value | |
2143 | */ | |
2144 | int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol, | |
2145 | struct snd_ctl_elem_value *ucontrol) | |
2146 | { | |
2147 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
2148 | const char *pin = (const char *)kcontrol->private_value; | |
2149 | ||
2150 | mutex_lock(&codec->mutex); | |
2151 | ||
2152 | ucontrol->value.integer.value[0] = | |
ce6120cc | 2153 | snd_soc_dapm_get_pin_status(&codec->dapm, pin); |
8b37dbd2 MB |
2154 | |
2155 | mutex_unlock(&codec->mutex); | |
2156 | ||
2157 | return 0; | |
2158 | } | |
2159 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch); | |
2160 | ||
2161 | /** | |
2162 | * snd_soc_dapm_put_pin_switch - Set information for a pin switch | |
2163 | * | |
2164 | * @kcontrol: mixer control | |
2165 | * @ucontrol: Value | |
2166 | */ | |
2167 | int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol, | |
2168 | struct snd_ctl_elem_value *ucontrol) | |
2169 | { | |
2170 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
2171 | const char *pin = (const char *)kcontrol->private_value; | |
2172 | ||
2173 | mutex_lock(&codec->mutex); | |
2174 | ||
2175 | if (ucontrol->value.integer.value[0]) | |
ce6120cc | 2176 | snd_soc_dapm_enable_pin(&codec->dapm, pin); |
8b37dbd2 | 2177 | else |
ce6120cc | 2178 | snd_soc_dapm_disable_pin(&codec->dapm, pin); |
8b37dbd2 | 2179 | |
ce6120cc | 2180 | snd_soc_dapm_sync(&codec->dapm); |
8b37dbd2 MB |
2181 | |
2182 | mutex_unlock(&codec->mutex); | |
2183 | ||
2184 | return 0; | |
2185 | } | |
2186 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch); | |
2187 | ||
2b97eabc RP |
2188 | /** |
2189 | * snd_soc_dapm_new_control - create new dapm control | |
ce6120cc | 2190 | * @dapm: DAPM context |
2b97eabc RP |
2191 | * @widget: widget template |
2192 | * | |
2193 | * Creates a new dapm control based upon the template. | |
2194 | * | |
2195 | * Returns 0 for success else error. | |
2196 | */ | |
ce6120cc | 2197 | int snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
2198 | const struct snd_soc_dapm_widget *widget) |
2199 | { | |
2200 | struct snd_soc_dapm_widget *w; | |
ead9b919 | 2201 | size_t name_len; |
2b97eabc RP |
2202 | |
2203 | if ((w = dapm_cnew_widget(widget)) == NULL) | |
2204 | return -ENOMEM; | |
2205 | ||
ead9b919 | 2206 | name_len = strlen(widget->name) + 1; |
88e8b9a8 | 2207 | if (dapm->codec && dapm->codec->name_prefix) |
ead9b919 JN |
2208 | name_len += 1 + strlen(dapm->codec->name_prefix); |
2209 | w->name = kmalloc(name_len, GFP_KERNEL); | |
2210 | if (w->name == NULL) { | |
2211 | kfree(w); | |
2212 | return -ENOMEM; | |
2213 | } | |
88e8b9a8 | 2214 | if (dapm->codec && dapm->codec->name_prefix) |
ead9b919 JN |
2215 | snprintf(w->name, name_len, "%s %s", |
2216 | dapm->codec->name_prefix, widget->name); | |
2217 | else | |
2218 | snprintf(w->name, name_len, "%s", widget->name); | |
2219 | ||
97c866de | 2220 | dapm->n_widgets++; |
ce6120cc LG |
2221 | w->dapm = dapm; |
2222 | w->codec = dapm->codec; | |
2b97eabc RP |
2223 | INIT_LIST_HEAD(&w->sources); |
2224 | INIT_LIST_HEAD(&w->sinks); | |
2225 | INIT_LIST_HEAD(&w->list); | |
97c866de | 2226 | list_add(&w->list, &dapm->card->widgets); |
2b97eabc RP |
2227 | |
2228 | /* machine layer set ups unconnected pins and insertions */ | |
2229 | w->connected = 1; | |
2230 | return 0; | |
2231 | } | |
2232 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control); | |
2233 | ||
4ba1327a MB |
2234 | /** |
2235 | * snd_soc_dapm_new_controls - create new dapm controls | |
ce6120cc | 2236 | * @dapm: DAPM context |
4ba1327a MB |
2237 | * @widget: widget array |
2238 | * @num: number of widgets | |
2239 | * | |
2240 | * Creates new DAPM controls based upon the templates. | |
2241 | * | |
2242 | * Returns 0 for success else error. | |
2243 | */ | |
ce6120cc | 2244 | int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm, |
4ba1327a MB |
2245 | const struct snd_soc_dapm_widget *widget, |
2246 | int num) | |
2247 | { | |
2248 | int i, ret; | |
2249 | ||
2250 | for (i = 0; i < num; i++) { | |
ce6120cc | 2251 | ret = snd_soc_dapm_new_control(dapm, widget); |
b8b33cb5 | 2252 | if (ret < 0) { |
f7d41ae8 JN |
2253 | dev_err(dapm->dev, |
2254 | "ASoC: Failed to create DAPM control %s: %d\n", | |
2255 | widget->name, ret); | |
4ba1327a | 2256 | return ret; |
b8b33cb5 | 2257 | } |
4ba1327a MB |
2258 | widget++; |
2259 | } | |
2260 | return 0; | |
2261 | } | |
2262 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls); | |
2263 | ||
ce6120cc | 2264 | static void soc_dapm_stream_event(struct snd_soc_dapm_context *dapm, |
f0fba2ad | 2265 | const char *stream, int event) |
2b97eabc RP |
2266 | { |
2267 | struct snd_soc_dapm_widget *w; | |
2268 | ||
97c866de | 2269 | list_for_each_entry(w, &dapm->card->widgets, list) |
2b97eabc | 2270 | { |
97c866de | 2271 | if (!w->sname || w->dapm != dapm) |
2b97eabc | 2272 | continue; |
f7d41ae8 JN |
2273 | dev_dbg(w->dapm->dev, "widget %s\n %s stream %s event %d\n", |
2274 | w->name, w->sname, stream, event); | |
2b97eabc RP |
2275 | if (strstr(w->sname, stream)) { |
2276 | switch(event) { | |
2277 | case SND_SOC_DAPM_STREAM_START: | |
2278 | w->active = 1; | |
2279 | break; | |
2280 | case SND_SOC_DAPM_STREAM_STOP: | |
2281 | w->active = 0; | |
2282 | break; | |
2283 | case SND_SOC_DAPM_STREAM_SUSPEND: | |
2b97eabc | 2284 | case SND_SOC_DAPM_STREAM_RESUME: |
2b97eabc | 2285 | case SND_SOC_DAPM_STREAM_PAUSE_PUSH: |
2b97eabc RP |
2286 | case SND_SOC_DAPM_STREAM_PAUSE_RELEASE: |
2287 | break; | |
2288 | } | |
2289 | } | |
2290 | } | |
2b97eabc | 2291 | |
ce6120cc LG |
2292 | dapm_power_widgets(dapm, event); |
2293 | } | |
2294 | ||
2295 | /** | |
2296 | * snd_soc_dapm_stream_event - send a stream event to the dapm core | |
2297 | * @rtd: PCM runtime data | |
2298 | * @stream: stream name | |
2299 | * @event: stream event | |
2300 | * | |
2301 | * Sends a stream event to the dapm core. The core then makes any | |
2302 | * necessary widget power changes. | |
2303 | * | |
2304 | * Returns 0 for success else error. | |
2305 | */ | |
2306 | int snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, | |
2307 | const char *stream, int event) | |
2308 | { | |
2309 | struct snd_soc_codec *codec = rtd->codec; | |
2310 | ||
2311 | if (stream == NULL) | |
2312 | return 0; | |
2313 | ||
2314 | mutex_lock(&codec->mutex); | |
2315 | soc_dapm_stream_event(&codec->dapm, stream, event); | |
8e8b2d67 | 2316 | mutex_unlock(&codec->mutex); |
2b97eabc RP |
2317 | return 0; |
2318 | } | |
2b97eabc RP |
2319 | |
2320 | /** | |
a5302181 | 2321 | * snd_soc_dapm_enable_pin - enable pin. |
ce6120cc | 2322 | * @dapm: DAPM context |
a5302181 | 2323 | * @pin: pin name |
2b97eabc | 2324 | * |
74b8f955 | 2325 | * Enables input/output pin and its parents or children widgets iff there is |
a5302181 LG |
2326 | * a valid audio route and active audio stream. |
2327 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2328 | * do any widget power switching. | |
2b97eabc | 2329 | */ |
ce6120cc | 2330 | int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin) |
2b97eabc | 2331 | { |
ce6120cc | 2332 | return snd_soc_dapm_set_pin(dapm, pin, 1); |
a5302181 LG |
2333 | } |
2334 | EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin); | |
2b97eabc | 2335 | |
da34183e MB |
2336 | /** |
2337 | * snd_soc_dapm_force_enable_pin - force a pin to be enabled | |
ce6120cc | 2338 | * @dapm: DAPM context |
da34183e MB |
2339 | * @pin: pin name |
2340 | * | |
2341 | * Enables input/output pin regardless of any other state. This is | |
2342 | * intended for use with microphone bias supplies used in microphone | |
2343 | * jack detection. | |
2344 | * | |
2345 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2346 | * do any widget power switching. | |
2347 | */ | |
ce6120cc LG |
2348 | int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm, |
2349 | const char *pin) | |
da34183e | 2350 | { |
91a5fca4 | 2351 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); |
da34183e | 2352 | |
91a5fca4 LPC |
2353 | if (!w) { |
2354 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); | |
2355 | return -EINVAL; | |
0d86733c MB |
2356 | } |
2357 | ||
91a5fca4 LPC |
2358 | dev_dbg(w->dapm->dev, "dapm: force enable pin %s\n", pin); |
2359 | w->connected = 1; | |
2360 | w->force = 1; | |
da34183e | 2361 | |
91a5fca4 | 2362 | return 0; |
da34183e MB |
2363 | } |
2364 | EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin); | |
2365 | ||
a5302181 LG |
2366 | /** |
2367 | * snd_soc_dapm_disable_pin - disable pin. | |
ce6120cc | 2368 | * @dapm: DAPM context |
a5302181 LG |
2369 | * @pin: pin name |
2370 | * | |
74b8f955 | 2371 | * Disables input/output pin and its parents or children widgets. |
a5302181 LG |
2372 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to |
2373 | * do any widget power switching. | |
2374 | */ | |
ce6120cc LG |
2375 | int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm, |
2376 | const char *pin) | |
a5302181 | 2377 | { |
ce6120cc | 2378 | return snd_soc_dapm_set_pin(dapm, pin, 0); |
2b97eabc | 2379 | } |
a5302181 | 2380 | EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin); |
2b97eabc | 2381 | |
5817b52a MB |
2382 | /** |
2383 | * snd_soc_dapm_nc_pin - permanently disable pin. | |
ce6120cc | 2384 | * @dapm: DAPM context |
5817b52a MB |
2385 | * @pin: pin name |
2386 | * | |
2387 | * Marks the specified pin as being not connected, disabling it along | |
2388 | * any parent or child widgets. At present this is identical to | |
2389 | * snd_soc_dapm_disable_pin() but in future it will be extended to do | |
2390 | * additional things such as disabling controls which only affect | |
2391 | * paths through the pin. | |
2392 | * | |
2393 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2394 | * do any widget power switching. | |
2395 | */ | |
ce6120cc | 2396 | int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin) |
5817b52a | 2397 | { |
ce6120cc | 2398 | return snd_soc_dapm_set_pin(dapm, pin, 0); |
5817b52a MB |
2399 | } |
2400 | EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin); | |
2401 | ||
eeec12bf | 2402 | /** |
a5302181 | 2403 | * snd_soc_dapm_get_pin_status - get audio pin status |
ce6120cc | 2404 | * @dapm: DAPM context |
a5302181 | 2405 | * @pin: audio signal pin endpoint (or start point) |
eeec12bf | 2406 | * |
a5302181 | 2407 | * Get audio pin status - connected or disconnected. |
eeec12bf | 2408 | * |
a5302181 | 2409 | * Returns 1 for connected otherwise 0. |
eeec12bf | 2410 | */ |
ce6120cc LG |
2411 | int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm, |
2412 | const char *pin) | |
eeec12bf | 2413 | { |
91a5fca4 | 2414 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); |
eeec12bf | 2415 | |
91a5fca4 LPC |
2416 | if (w) |
2417 | return w->connected; | |
a68b38ad | 2418 | |
eeec12bf GG |
2419 | return 0; |
2420 | } | |
a5302181 | 2421 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status); |
eeec12bf | 2422 | |
1547aba9 MB |
2423 | /** |
2424 | * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint | |
ce6120cc | 2425 | * @dapm: DAPM context |
1547aba9 MB |
2426 | * @pin: audio signal pin endpoint (or start point) |
2427 | * | |
2428 | * Mark the given endpoint or pin as ignoring suspend. When the | |
2429 | * system is disabled a path between two endpoints flagged as ignoring | |
2430 | * suspend will not be disabled. The path must already be enabled via | |
2431 | * normal means at suspend time, it will not be turned on if it was not | |
2432 | * already enabled. | |
2433 | */ | |
ce6120cc LG |
2434 | int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm, |
2435 | const char *pin) | |
1547aba9 | 2436 | { |
91a5fca4 | 2437 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, false); |
1547aba9 | 2438 | |
91a5fca4 LPC |
2439 | if (!w) { |
2440 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); | |
2441 | return -EINVAL; | |
1547aba9 MB |
2442 | } |
2443 | ||
91a5fca4 LPC |
2444 | w->ignore_suspend = 1; |
2445 | ||
2446 | return 0; | |
1547aba9 MB |
2447 | } |
2448 | EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend); | |
2449 | ||
2b97eabc RP |
2450 | /** |
2451 | * snd_soc_dapm_free - free dapm resources | |
f0fba2ad | 2452 | * @card: SoC device |
2b97eabc RP |
2453 | * |
2454 | * Free all dapm widgets and resources. | |
2455 | */ | |
ce6120cc | 2456 | void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm) |
2b97eabc | 2457 | { |
ce6120cc | 2458 | snd_soc_dapm_sys_remove(dapm->dev); |
6c45e126 | 2459 | dapm_debugfs_cleanup(dapm); |
ce6120cc | 2460 | dapm_free_widgets(dapm); |
7be31be8 | 2461 | list_del(&dapm->list); |
2b97eabc RP |
2462 | } |
2463 | EXPORT_SYMBOL_GPL(snd_soc_dapm_free); | |
2464 | ||
ce6120cc | 2465 | static void soc_dapm_shutdown_codec(struct snd_soc_dapm_context *dapm) |
51737470 | 2466 | { |
51737470 MB |
2467 | struct snd_soc_dapm_widget *w; |
2468 | LIST_HEAD(down_list); | |
2469 | int powerdown = 0; | |
2470 | ||
97c866de JN |
2471 | list_for_each_entry(w, &dapm->card->widgets, list) { |
2472 | if (w->dapm != dapm) | |
2473 | continue; | |
51737470 | 2474 | if (w->power) { |
828a842f | 2475 | dapm_seq_insert(w, &down_list, false); |
c2caa4da | 2476 | w->power = 0; |
51737470 MB |
2477 | powerdown = 1; |
2478 | } | |
2479 | } | |
2480 | ||
2481 | /* If there were no widgets to power down we're already in | |
2482 | * standby. | |
2483 | */ | |
2484 | if (powerdown) { | |
ed5a4c47 | 2485 | snd_soc_dapm_set_bias_level(dapm, SND_SOC_BIAS_PREPARE); |
828a842f | 2486 | dapm_seq_run(dapm, &down_list, 0, false); |
ed5a4c47 | 2487 | snd_soc_dapm_set_bias_level(dapm, SND_SOC_BIAS_STANDBY); |
51737470 | 2488 | } |
f0fba2ad LG |
2489 | } |
2490 | ||
2491 | /* | |
2492 | * snd_soc_dapm_shutdown - callback for system shutdown | |
2493 | */ | |
2494 | void snd_soc_dapm_shutdown(struct snd_soc_card *card) | |
2495 | { | |
2496 | struct snd_soc_codec *codec; | |
2497 | ||
ce6120cc LG |
2498 | list_for_each_entry(codec, &card->codec_dev_list, list) { |
2499 | soc_dapm_shutdown_codec(&codec->dapm); | |
ed5a4c47 | 2500 | snd_soc_dapm_set_bias_level(&codec->dapm, SND_SOC_BIAS_OFF); |
ce6120cc | 2501 | } |
51737470 MB |
2502 | } |
2503 | ||
2b97eabc | 2504 | /* Module information */ |
d331124d | 2505 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
2b97eabc RP |
2506 | MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC"); |
2507 | MODULE_LICENSE("GPL"); |