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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> | |
35 | #include <linux/delay.h> | |
36 | #include <linux/pm.h> | |
37 | #include <linux/bitops.h> | |
38 | #include <linux/platform_device.h> | |
39 | #include <linux/jiffies.h> | |
2b97eabc RP |
40 | #include <sound/core.h> |
41 | #include <sound/pcm.h> | |
42 | #include <sound/pcm_params.h> | |
43 | #include <sound/soc-dapm.h> | |
44 | #include <sound/initval.h> | |
45 | ||
46 | /* debug */ | |
c1286b86 | 47 | #ifdef DEBUG |
2b97eabc | 48 | #define dump_dapm(codec, action) dbg_dump_dapm(codec, action) |
2b97eabc RP |
49 | #else |
50 | #define dump_dapm(codec, action) | |
2b97eabc RP |
51 | #endif |
52 | ||
2b97eabc RP |
53 | /* dapm power sequences - make this per codec in the future */ |
54 | static int dapm_up_seq[] = { | |
38357ab2 MB |
55 | [snd_soc_dapm_pre] = 0, |
56 | [snd_soc_dapm_supply] = 1, | |
57 | [snd_soc_dapm_micbias] = 2, | |
58 | [snd_soc_dapm_mic] = 3, | |
59 | [snd_soc_dapm_mux] = 4, | |
e3d4dabd MB |
60 | [snd_soc_dapm_value_mux] = 4, |
61 | [snd_soc_dapm_dac] = 5, | |
62 | [snd_soc_dapm_mixer] = 6, | |
63 | [snd_soc_dapm_mixer_named_ctl] = 6, | |
64 | [snd_soc_dapm_pga] = 7, | |
65 | [snd_soc_dapm_adc] = 8, | |
66 | [snd_soc_dapm_hp] = 9, | |
1ca04065 MB |
67 | [snd_soc_dapm_spk] = 9, |
68 | [snd_soc_dapm_post] = 10, | |
2b97eabc | 69 | }; |
ca9c1aae | 70 | |
2b97eabc | 71 | static int dapm_down_seq[] = { |
38357ab2 MB |
72 | [snd_soc_dapm_pre] = 0, |
73 | [snd_soc_dapm_adc] = 1, | |
74 | [snd_soc_dapm_hp] = 2, | |
1ca04065 | 75 | [snd_soc_dapm_spk] = 2, |
38357ab2 MB |
76 | [snd_soc_dapm_pga] = 4, |
77 | [snd_soc_dapm_mixer_named_ctl] = 5, | |
e3d4dabd MB |
78 | [snd_soc_dapm_mixer] = 5, |
79 | [snd_soc_dapm_dac] = 6, | |
80 | [snd_soc_dapm_mic] = 7, | |
81 | [snd_soc_dapm_micbias] = 8, | |
82 | [snd_soc_dapm_mux] = 9, | |
83 | [snd_soc_dapm_value_mux] = 9, | |
84 | [snd_soc_dapm_supply] = 10, | |
85 | [snd_soc_dapm_post] = 11, | |
2b97eabc RP |
86 | }; |
87 | ||
12ef193d | 88 | static void pop_wait(u32 pop_time) |
15e4c72f MB |
89 | { |
90 | if (pop_time) | |
91 | schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time)); | |
92 | } | |
93 | ||
12ef193d | 94 | static void pop_dbg(u32 pop_time, const char *fmt, ...) |
15e4c72f MB |
95 | { |
96 | va_list args; | |
97 | ||
98 | va_start(args, fmt); | |
99 | ||
100 | if (pop_time) { | |
101 | vprintk(fmt, args); | |
12ef193d | 102 | pop_wait(pop_time); |
15e4c72f MB |
103 | } |
104 | ||
105 | va_end(args); | |
106 | } | |
107 | ||
2b97eabc | 108 | /* create a new dapm widget */ |
88cb4290 | 109 | static inline struct snd_soc_dapm_widget *dapm_cnew_widget( |
2b97eabc RP |
110 | const struct snd_soc_dapm_widget *_widget) |
111 | { | |
88cb4290 | 112 | return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL); |
2b97eabc RP |
113 | } |
114 | ||
452c5eaa MB |
115 | /** |
116 | * snd_soc_dapm_set_bias_level - set the bias level for the system | |
117 | * @socdev: audio device | |
118 | * @level: level to configure | |
119 | * | |
120 | * Configure the bias (power) levels for the SoC audio device. | |
121 | * | |
122 | * Returns 0 for success else error. | |
123 | */ | |
124 | static int snd_soc_dapm_set_bias_level(struct snd_soc_device *socdev, | |
125 | enum snd_soc_bias_level level) | |
126 | { | |
127 | struct snd_soc_card *card = socdev->card; | |
128 | struct snd_soc_codec *codec = socdev->card->codec; | |
129 | int ret = 0; | |
130 | ||
f83fba8b MB |
131 | switch (level) { |
132 | case SND_SOC_BIAS_ON: | |
133 | dev_dbg(socdev->dev, "Setting full bias\n"); | |
134 | break; | |
135 | case SND_SOC_BIAS_PREPARE: | |
136 | dev_dbg(socdev->dev, "Setting bias prepare\n"); | |
137 | break; | |
138 | case SND_SOC_BIAS_STANDBY: | |
139 | dev_dbg(socdev->dev, "Setting standby bias\n"); | |
140 | break; | |
141 | case SND_SOC_BIAS_OFF: | |
142 | dev_dbg(socdev->dev, "Setting bias off\n"); | |
143 | break; | |
144 | default: | |
145 | dev_err(socdev->dev, "Setting invalid bias %d\n", level); | |
146 | return -EINVAL; | |
147 | } | |
148 | ||
452c5eaa MB |
149 | if (card->set_bias_level) |
150 | ret = card->set_bias_level(card, level); | |
151 | if (ret == 0 && codec->set_bias_level) | |
152 | ret = codec->set_bias_level(codec, level); | |
153 | ||
154 | return ret; | |
155 | } | |
156 | ||
2b97eabc RP |
157 | /* set up initial codec paths */ |
158 | static void dapm_set_path_status(struct snd_soc_dapm_widget *w, | |
159 | struct snd_soc_dapm_path *p, int i) | |
160 | { | |
161 | switch (w->id) { | |
162 | case snd_soc_dapm_switch: | |
ca9c1aae IM |
163 | case snd_soc_dapm_mixer: |
164 | case snd_soc_dapm_mixer_named_ctl: { | |
2b97eabc | 165 | int val; |
4eaa9819 JS |
166 | struct soc_mixer_control *mc = (struct soc_mixer_control *) |
167 | w->kcontrols[i].private_value; | |
815ecf8d JS |
168 | unsigned int reg = mc->reg; |
169 | unsigned int shift = mc->shift; | |
4eaa9819 | 170 | int max = mc->max; |
815ecf8d JS |
171 | unsigned int mask = (1 << fls(max)) - 1; |
172 | unsigned int invert = mc->invert; | |
2b97eabc RP |
173 | |
174 | val = snd_soc_read(w->codec, reg); | |
175 | val = (val >> shift) & mask; | |
176 | ||
177 | if ((invert && !val) || (!invert && val)) | |
178 | p->connect = 1; | |
179 | else | |
180 | p->connect = 0; | |
181 | } | |
182 | break; | |
183 | case snd_soc_dapm_mux: { | |
184 | struct soc_enum *e = (struct soc_enum *)w->kcontrols[i].private_value; | |
185 | int val, item, bitmask; | |
186 | ||
f8ba0b7b | 187 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
188 | ; |
189 | val = snd_soc_read(w->codec, e->reg); | |
190 | item = (val >> e->shift_l) & (bitmask - 1); | |
191 | ||
192 | p->connect = 0; | |
f8ba0b7b | 193 | for (i = 0; i < e->max; i++) { |
2b97eabc RP |
194 | if (!(strcmp(p->name, e->texts[i])) && item == i) |
195 | p->connect = 1; | |
196 | } | |
197 | } | |
198 | break; | |
2e72f8e3 | 199 | case snd_soc_dapm_value_mux: { |
74155556 | 200 | struct soc_enum *e = (struct soc_enum *) |
2e72f8e3 PU |
201 | w->kcontrols[i].private_value; |
202 | int val, item; | |
203 | ||
204 | val = snd_soc_read(w->codec, e->reg); | |
205 | val = (val >> e->shift_l) & e->mask; | |
206 | for (item = 0; item < e->max; item++) { | |
207 | if (val == e->values[item]) | |
208 | break; | |
209 | } | |
210 | ||
211 | p->connect = 0; | |
212 | for (i = 0; i < e->max; i++) { | |
213 | if (!(strcmp(p->name, e->texts[i])) && item == i) | |
214 | p->connect = 1; | |
215 | } | |
216 | } | |
217 | break; | |
2b97eabc RP |
218 | /* does not effect routing - always connected */ |
219 | case snd_soc_dapm_pga: | |
220 | case snd_soc_dapm_output: | |
221 | case snd_soc_dapm_adc: | |
222 | case snd_soc_dapm_input: | |
223 | case snd_soc_dapm_dac: | |
224 | case snd_soc_dapm_micbias: | |
225 | case snd_soc_dapm_vmid: | |
246d0a17 | 226 | case snd_soc_dapm_supply: |
2b97eabc RP |
227 | p->connect = 1; |
228 | break; | |
229 | /* does effect routing - dynamically connected */ | |
230 | case snd_soc_dapm_hp: | |
231 | case snd_soc_dapm_mic: | |
232 | case snd_soc_dapm_spk: | |
233 | case snd_soc_dapm_line: | |
234 | case snd_soc_dapm_pre: | |
235 | case snd_soc_dapm_post: | |
236 | p->connect = 0; | |
237 | break; | |
238 | } | |
239 | } | |
240 | ||
74b8f955 | 241 | /* connect mux widget to its interconnecting audio paths */ |
2b97eabc RP |
242 | static int dapm_connect_mux(struct snd_soc_codec *codec, |
243 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, | |
244 | struct snd_soc_dapm_path *path, const char *control_name, | |
245 | const struct snd_kcontrol_new *kcontrol) | |
246 | { | |
247 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
248 | int i; | |
249 | ||
f8ba0b7b | 250 | for (i = 0; i < e->max; i++) { |
2b97eabc RP |
251 | if (!(strcmp(control_name, e->texts[i]))) { |
252 | list_add(&path->list, &codec->dapm_paths); | |
253 | list_add(&path->list_sink, &dest->sources); | |
254 | list_add(&path->list_source, &src->sinks); | |
255 | path->name = (char*)e->texts[i]; | |
256 | dapm_set_path_status(dest, path, 0); | |
257 | return 0; | |
258 | } | |
259 | } | |
260 | ||
261 | return -ENODEV; | |
262 | } | |
263 | ||
74b8f955 | 264 | /* connect mixer widget to its interconnecting audio paths */ |
2b97eabc RP |
265 | static int dapm_connect_mixer(struct snd_soc_codec *codec, |
266 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, | |
267 | struct snd_soc_dapm_path *path, const char *control_name) | |
268 | { | |
269 | int i; | |
270 | ||
271 | /* search for mixer kcontrol */ | |
272 | for (i = 0; i < dest->num_kcontrols; i++) { | |
273 | if (!strcmp(control_name, dest->kcontrols[i].name)) { | |
274 | list_add(&path->list, &codec->dapm_paths); | |
275 | list_add(&path->list_sink, &dest->sources); | |
276 | list_add(&path->list_source, &src->sinks); | |
277 | path->name = dest->kcontrols[i].name; | |
278 | dapm_set_path_status(dest, path, i); | |
279 | return 0; | |
280 | } | |
281 | } | |
282 | return -ENODEV; | |
283 | } | |
284 | ||
285 | /* update dapm codec register bits */ | |
286 | static int dapm_update_bits(struct snd_soc_dapm_widget *widget) | |
287 | { | |
288 | int change, power; | |
46f5822f | 289 | unsigned int old, new; |
2b97eabc RP |
290 | struct snd_soc_codec *codec = widget->codec; |
291 | ||
292 | /* check for valid widgets */ | |
293 | if (widget->reg < 0 || widget->id == snd_soc_dapm_input || | |
294 | widget->id == snd_soc_dapm_output || | |
295 | widget->id == snd_soc_dapm_hp || | |
296 | widget->id == snd_soc_dapm_mic || | |
297 | widget->id == snd_soc_dapm_line || | |
298 | widget->id == snd_soc_dapm_spk) | |
299 | return 0; | |
300 | ||
301 | power = widget->power; | |
302 | if (widget->invert) | |
303 | power = (power ? 0:1); | |
304 | ||
305 | old = snd_soc_read(codec, widget->reg); | |
306 | new = (old & ~(0x1 << widget->shift)) | (power << widget->shift); | |
307 | ||
308 | change = old != new; | |
309 | if (change) { | |
12ef193d TK |
310 | pop_dbg(codec->pop_time, "pop test %s : %s in %d ms\n", |
311 | widget->name, widget->power ? "on" : "off", | |
312 | codec->pop_time); | |
2b97eabc | 313 | snd_soc_write(codec, widget->reg, new); |
12ef193d | 314 | pop_wait(codec->pop_time); |
2b97eabc | 315 | } |
c1286b86 MB |
316 | pr_debug("reg %x old %x new %x change %d\n", widget->reg, |
317 | old, new, change); | |
2b97eabc RP |
318 | return change; |
319 | } | |
320 | ||
321 | /* ramps the volume up or down to minimise pops before or after a | |
322 | * DAPM power event */ | |
323 | static int dapm_set_pga(struct snd_soc_dapm_widget *widget, int power) | |
324 | { | |
325 | const struct snd_kcontrol_new *k = widget->kcontrols; | |
326 | ||
327 | if (widget->muted && !power) | |
328 | return 0; | |
329 | if (!widget->muted && power) | |
330 | return 0; | |
331 | ||
332 | if (widget->num_kcontrols && k) { | |
4eaa9819 JS |
333 | struct soc_mixer_control *mc = |
334 | (struct soc_mixer_control *)k->private_value; | |
815ecf8d JS |
335 | unsigned int reg = mc->reg; |
336 | unsigned int shift = mc->shift; | |
4eaa9819 | 337 | int max = mc->max; |
815ecf8d JS |
338 | unsigned int mask = (1 << fls(max)) - 1; |
339 | unsigned int invert = mc->invert; | |
2b97eabc RP |
340 | |
341 | if (power) { | |
342 | int i; | |
343 | /* power up has happended, increase volume to last level */ | |
344 | if (invert) { | |
4eaa9819 | 345 | for (i = max; i > widget->saved_value; i--) |
2b97eabc RP |
346 | snd_soc_update_bits(widget->codec, reg, mask, i); |
347 | } else { | |
348 | for (i = 0; i < widget->saved_value; i++) | |
349 | snd_soc_update_bits(widget->codec, reg, mask, i); | |
350 | } | |
351 | widget->muted = 0; | |
352 | } else { | |
353 | /* power down is about to occur, decrease volume to mute */ | |
354 | int val = snd_soc_read(widget->codec, reg); | |
355 | int i = widget->saved_value = (val >> shift) & mask; | |
356 | if (invert) { | |
357 | for (; i < mask; i++) | |
358 | snd_soc_update_bits(widget->codec, reg, mask, i); | |
359 | } else { | |
360 | for (; i > 0; i--) | |
361 | snd_soc_update_bits(widget->codec, reg, mask, i); | |
362 | } | |
363 | widget->muted = 1; | |
364 | } | |
365 | } | |
366 | return 0; | |
367 | } | |
368 | ||
369 | /* create new dapm mixer control */ | |
370 | static int dapm_new_mixer(struct snd_soc_codec *codec, | |
371 | struct snd_soc_dapm_widget *w) | |
372 | { | |
373 | int i, ret = 0; | |
219b93f5 | 374 | size_t name_len; |
2b97eabc RP |
375 | struct snd_soc_dapm_path *path; |
376 | ||
377 | /* add kcontrol */ | |
378 | for (i = 0; i < w->num_kcontrols; i++) { | |
379 | ||
380 | /* match name */ | |
381 | list_for_each_entry(path, &w->sources, list_sink) { | |
382 | ||
383 | /* mixer/mux paths name must match control name */ | |
384 | if (path->name != (char*)w->kcontrols[i].name) | |
385 | continue; | |
386 | ||
ca9c1aae IM |
387 | /* add dapm control with long name. |
388 | * for dapm_mixer this is the concatenation of the | |
389 | * mixer and kcontrol name. | |
390 | * for dapm_mixer_named_ctl this is simply the | |
391 | * kcontrol name. | |
392 | */ | |
393 | name_len = strlen(w->kcontrols[i].name) + 1; | |
07495f3e | 394 | if (w->id != snd_soc_dapm_mixer_named_ctl) |
ca9c1aae IM |
395 | name_len += 1 + strlen(w->name); |
396 | ||
219b93f5 | 397 | path->long_name = kmalloc(name_len, GFP_KERNEL); |
ca9c1aae | 398 | |
2b97eabc RP |
399 | if (path->long_name == NULL) |
400 | return -ENOMEM; | |
401 | ||
ca9c1aae | 402 | switch (w->id) { |
ca9c1aae IM |
403 | default: |
404 | snprintf(path->long_name, name_len, "%s %s", | |
405 | w->name, w->kcontrols[i].name); | |
07495f3e | 406 | break; |
ca9c1aae IM |
407 | case snd_soc_dapm_mixer_named_ctl: |
408 | snprintf(path->long_name, name_len, "%s", | |
409 | w->kcontrols[i].name); | |
07495f3e | 410 | break; |
ca9c1aae IM |
411 | } |
412 | ||
219b93f5 MB |
413 | path->long_name[name_len - 1] = '\0'; |
414 | ||
2b97eabc RP |
415 | path->kcontrol = snd_soc_cnew(&w->kcontrols[i], w, |
416 | path->long_name); | |
417 | ret = snd_ctl_add(codec->card, path->kcontrol); | |
418 | if (ret < 0) { | |
6553e192 MB |
419 | printk(KERN_ERR "asoc: failed to add dapm kcontrol %s: %d\n", |
420 | path->long_name, | |
421 | ret); | |
2b97eabc RP |
422 | kfree(path->long_name); |
423 | path->long_name = NULL; | |
424 | return ret; | |
425 | } | |
426 | } | |
427 | } | |
428 | return ret; | |
429 | } | |
430 | ||
431 | /* create new dapm mux control */ | |
432 | static int dapm_new_mux(struct snd_soc_codec *codec, | |
433 | struct snd_soc_dapm_widget *w) | |
434 | { | |
435 | struct snd_soc_dapm_path *path = NULL; | |
436 | struct snd_kcontrol *kcontrol; | |
437 | int ret = 0; | |
438 | ||
439 | if (!w->num_kcontrols) { | |
440 | printk(KERN_ERR "asoc: mux %s has no controls\n", w->name); | |
441 | return -EINVAL; | |
442 | } | |
443 | ||
444 | kcontrol = snd_soc_cnew(&w->kcontrols[0], w, w->name); | |
445 | ret = snd_ctl_add(codec->card, kcontrol); | |
446 | if (ret < 0) | |
447 | goto err; | |
448 | ||
449 | list_for_each_entry(path, &w->sources, list_sink) | |
450 | path->kcontrol = kcontrol; | |
451 | ||
452 | return ret; | |
453 | ||
454 | err: | |
455 | printk(KERN_ERR "asoc: failed to add kcontrol %s\n", w->name); | |
456 | return ret; | |
457 | } | |
458 | ||
459 | /* create new dapm volume control */ | |
460 | static int dapm_new_pga(struct snd_soc_codec *codec, | |
461 | struct snd_soc_dapm_widget *w) | |
462 | { | |
463 | struct snd_kcontrol *kcontrol; | |
464 | int ret = 0; | |
465 | ||
466 | if (!w->num_kcontrols) | |
467 | return -EINVAL; | |
468 | ||
469 | kcontrol = snd_soc_cnew(&w->kcontrols[0], w, w->name); | |
470 | ret = snd_ctl_add(codec->card, kcontrol); | |
471 | if (ret < 0) { | |
472 | printk(KERN_ERR "asoc: failed to add kcontrol %s\n", w->name); | |
473 | return ret; | |
474 | } | |
475 | ||
476 | return ret; | |
477 | } | |
478 | ||
479 | /* reset 'walked' bit for each dapm path */ | |
480 | static inline void dapm_clear_walk(struct snd_soc_codec *codec) | |
481 | { | |
482 | struct snd_soc_dapm_path *p; | |
483 | ||
484 | list_for_each_entry(p, &codec->dapm_paths, list) | |
485 | p->walked = 0; | |
486 | } | |
487 | ||
488 | /* | |
489 | * Recursively check for a completed path to an active or physically connected | |
490 | * output widget. Returns number of complete paths. | |
491 | */ | |
492 | static int is_connected_output_ep(struct snd_soc_dapm_widget *widget) | |
493 | { | |
494 | struct snd_soc_dapm_path *path; | |
495 | int con = 0; | |
496 | ||
246d0a17 MB |
497 | if (widget->id == snd_soc_dapm_supply) |
498 | return 0; | |
499 | ||
2b97eabc RP |
500 | if (widget->id == snd_soc_dapm_adc && widget->active) |
501 | return 1; | |
502 | ||
503 | if (widget->connected) { | |
504 | /* connected pin ? */ | |
505 | if (widget->id == snd_soc_dapm_output && !widget->ext) | |
506 | return 1; | |
507 | ||
508 | /* connected jack or spk ? */ | |
509 | if (widget->id == snd_soc_dapm_hp || widget->id == snd_soc_dapm_spk || | |
510 | widget->id == snd_soc_dapm_line) | |
511 | return 1; | |
512 | } | |
513 | ||
514 | list_for_each_entry(path, &widget->sinks, list_source) { | |
515 | if (path->walked) | |
516 | continue; | |
517 | ||
518 | if (path->sink && path->connect) { | |
519 | path->walked = 1; | |
520 | con += is_connected_output_ep(path->sink); | |
521 | } | |
522 | } | |
523 | ||
524 | return con; | |
525 | } | |
526 | ||
527 | /* | |
528 | * Recursively check for a completed path to an active or physically connected | |
529 | * input widget. Returns number of complete paths. | |
530 | */ | |
531 | static int is_connected_input_ep(struct snd_soc_dapm_widget *widget) | |
532 | { | |
533 | struct snd_soc_dapm_path *path; | |
534 | int con = 0; | |
535 | ||
246d0a17 MB |
536 | if (widget->id == snd_soc_dapm_supply) |
537 | return 0; | |
538 | ||
2b97eabc RP |
539 | /* active stream ? */ |
540 | if (widget->id == snd_soc_dapm_dac && widget->active) | |
541 | return 1; | |
542 | ||
543 | if (widget->connected) { | |
544 | /* connected pin ? */ | |
545 | if (widget->id == snd_soc_dapm_input && !widget->ext) | |
546 | return 1; | |
547 | ||
548 | /* connected VMID/Bias for lower pops */ | |
549 | if (widget->id == snd_soc_dapm_vmid) | |
550 | return 1; | |
551 | ||
552 | /* connected jack ? */ | |
553 | if (widget->id == snd_soc_dapm_mic || widget->id == snd_soc_dapm_line) | |
554 | return 1; | |
555 | } | |
556 | ||
557 | list_for_each_entry(path, &widget->sources, list_sink) { | |
558 | if (path->walked) | |
559 | continue; | |
560 | ||
561 | if (path->source && path->connect) { | |
562 | path->walked = 1; | |
563 | con += is_connected_input_ep(path->source); | |
564 | } | |
565 | } | |
566 | ||
567 | return con; | |
568 | } | |
569 | ||
e2be2ccf JN |
570 | /* |
571 | * Handler for generic register modifier widget. | |
572 | */ | |
573 | int dapm_reg_event(struct snd_soc_dapm_widget *w, | |
574 | struct snd_kcontrol *kcontrol, int event) | |
575 | { | |
576 | unsigned int val; | |
577 | ||
578 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
579 | val = w->on_val; | |
580 | else | |
581 | val = w->off_val; | |
582 | ||
583 | snd_soc_update_bits(w->codec, -(w->reg + 1), | |
584 | w->mask << w->shift, val << w->shift); | |
585 | ||
586 | return 0; | |
587 | } | |
11589418 | 588 | EXPORT_SYMBOL_GPL(dapm_reg_event); |
e2be2ccf | 589 | |
025756ec MB |
590 | /* Standard power change method, used to apply power changes to most |
591 | * widgets. | |
592 | */ | |
593 | static int dapm_generic_apply_power(struct snd_soc_dapm_widget *w) | |
594 | { | |
595 | int ret; | |
596 | ||
597 | /* call any power change event handlers */ | |
598 | if (w->event) | |
599 | pr_debug("power %s event for %s flags %x\n", | |
600 | w->power ? "on" : "off", | |
601 | w->name, w->event_flags); | |
602 | ||
603 | /* power up pre event */ | |
604 | if (w->power && w->event && | |
605 | (w->event_flags & SND_SOC_DAPM_PRE_PMU)) { | |
606 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMU); | |
607 | if (ret < 0) | |
608 | return ret; | |
609 | } | |
610 | ||
611 | /* power down pre event */ | |
612 | if (!w->power && w->event && | |
613 | (w->event_flags & SND_SOC_DAPM_PRE_PMD)) { | |
614 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMD); | |
615 | if (ret < 0) | |
616 | return ret; | |
617 | } | |
618 | ||
619 | /* Lower PGA volume to reduce pops */ | |
620 | if (w->id == snd_soc_dapm_pga && !w->power) | |
621 | dapm_set_pga(w, w->power); | |
622 | ||
623 | dapm_update_bits(w); | |
624 | ||
625 | /* Raise PGA volume to reduce pops */ | |
626 | if (w->id == snd_soc_dapm_pga && w->power) | |
627 | dapm_set_pga(w, w->power); | |
628 | ||
629 | /* power up post event */ | |
630 | if (w->power && w->event && | |
631 | (w->event_flags & SND_SOC_DAPM_POST_PMU)) { | |
632 | ret = w->event(w, | |
633 | NULL, SND_SOC_DAPM_POST_PMU); | |
634 | if (ret < 0) | |
635 | return ret; | |
636 | } | |
637 | ||
638 | /* power down post event */ | |
639 | if (!w->power && w->event && | |
640 | (w->event_flags & SND_SOC_DAPM_POST_PMD)) { | |
641 | ret = w->event(w, NULL, SND_SOC_DAPM_POST_PMD); | |
642 | if (ret < 0) | |
643 | return ret; | |
644 | } | |
645 | ||
646 | return 0; | |
647 | } | |
648 | ||
cd0f2d47 MB |
649 | /* Generic check to see if a widget should be powered. |
650 | */ | |
651 | static int dapm_generic_check_power(struct snd_soc_dapm_widget *w) | |
652 | { | |
653 | int in, out; | |
654 | ||
655 | in = is_connected_input_ep(w); | |
656 | dapm_clear_walk(w->codec); | |
657 | out = is_connected_output_ep(w); | |
658 | dapm_clear_walk(w->codec); | |
659 | return out != 0 && in != 0; | |
660 | } | |
661 | ||
6ea31b9f MB |
662 | /* Check to see if an ADC has power */ |
663 | static int dapm_adc_check_power(struct snd_soc_dapm_widget *w) | |
664 | { | |
665 | int in; | |
666 | ||
667 | if (w->active) { | |
668 | in = is_connected_input_ep(w); | |
669 | dapm_clear_walk(w->codec); | |
670 | return in != 0; | |
671 | } else { | |
672 | return dapm_generic_check_power(w); | |
673 | } | |
674 | } | |
675 | ||
676 | /* Check to see if a DAC has power */ | |
677 | static int dapm_dac_check_power(struct snd_soc_dapm_widget *w) | |
678 | { | |
679 | int out; | |
680 | ||
681 | if (w->active) { | |
682 | out = is_connected_output_ep(w); | |
683 | dapm_clear_walk(w->codec); | |
684 | return out != 0; | |
685 | } else { | |
686 | return dapm_generic_check_power(w); | |
687 | } | |
688 | } | |
689 | ||
246d0a17 MB |
690 | /* Check to see if a power supply is needed */ |
691 | static int dapm_supply_check_power(struct snd_soc_dapm_widget *w) | |
692 | { | |
693 | struct snd_soc_dapm_path *path; | |
694 | int power = 0; | |
695 | ||
696 | /* Check if one of our outputs is connected */ | |
697 | list_for_each_entry(path, &w->sinks, list_source) { | |
698 | if (path->sink && path->sink->power_check && | |
699 | path->sink->power_check(path->sink)) { | |
700 | power = 1; | |
701 | break; | |
702 | } | |
703 | } | |
704 | ||
705 | dapm_clear_walk(w->codec); | |
706 | ||
707 | return power; | |
708 | } | |
709 | ||
38357ab2 MB |
710 | static int dapm_seq_compare(struct snd_soc_dapm_widget *a, |
711 | struct snd_soc_dapm_widget *b, | |
712 | int sort[]) | |
42aa3418 | 713 | { |
38357ab2 MB |
714 | if (sort[a->id] != sort[b->id]) |
715 | return sort[a->id] - sort[b->id]; | |
b22ead2a MB |
716 | if (a->reg != b->reg) |
717 | return a->reg - b->reg; | |
42aa3418 | 718 | |
38357ab2 MB |
719 | return 0; |
720 | } | |
42aa3418 | 721 | |
38357ab2 MB |
722 | /* Insert a widget in order into a DAPM power sequence. */ |
723 | static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget, | |
724 | struct list_head *list, | |
725 | int sort[]) | |
726 | { | |
727 | struct snd_soc_dapm_widget *w; | |
728 | ||
729 | list_for_each_entry(w, list, power_list) | |
730 | if (dapm_seq_compare(new_widget, w, sort) < 0) { | |
731 | list_add_tail(&new_widget->power_list, &w->power_list); | |
732 | return; | |
733 | } | |
734 | ||
735 | list_add_tail(&new_widget->power_list, list); | |
736 | } | |
737 | ||
b22ead2a MB |
738 | /* Apply the coalesced changes from a DAPM sequence */ |
739 | static void dapm_seq_run_coalesced(struct snd_soc_codec *codec, | |
740 | struct list_head *pending) | |
163cac06 MB |
741 | { |
742 | struct snd_soc_dapm_widget *w; | |
81628103 | 743 | int reg, power, ret; |
b22ead2a MB |
744 | unsigned int value = 0; |
745 | unsigned int mask = 0; | |
746 | unsigned int cur_mask; | |
747 | ||
748 | reg = list_first_entry(pending, struct snd_soc_dapm_widget, | |
749 | power_list)->reg; | |
750 | ||
751 | list_for_each_entry(w, pending, power_list) { | |
752 | cur_mask = 1 << w->shift; | |
753 | BUG_ON(reg != w->reg); | |
754 | ||
755 | if (w->invert) | |
756 | power = !w->power; | |
757 | else | |
758 | power = w->power; | |
759 | ||
760 | mask |= cur_mask; | |
761 | if (power) | |
762 | value |= cur_mask; | |
763 | ||
764 | pop_dbg(codec->pop_time, | |
765 | "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n", | |
766 | w->name, reg, value, mask); | |
81628103 MB |
767 | |
768 | /* power up pre event */ | |
769 | if (w->power && w->event && | |
770 | (w->event_flags & SND_SOC_DAPM_PRE_PMU)) { | |
771 | pop_dbg(codec->pop_time, "pop test : %s PRE_PMU\n", | |
772 | w->name); | |
773 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMU); | |
42aa3418 | 774 | if (ret < 0) |
81628103 MB |
775 | pr_err("%s: pre event failed: %d\n", |
776 | w->name, ret); | |
777 | } | |
778 | ||
779 | /* power down pre event */ | |
780 | if (!w->power && w->event && | |
781 | (w->event_flags & SND_SOC_DAPM_PRE_PMD)) { | |
782 | pop_dbg(codec->pop_time, "pop test : %s PRE_PMD\n", | |
783 | w->name); | |
784 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMD); | |
42aa3418 | 785 | if (ret < 0) |
81628103 MB |
786 | pr_err("%s: pre event failed: %d\n", |
787 | w->name, ret); | |
42aa3418 | 788 | } |
6ea31b9f | 789 | |
4f1c1923 MB |
790 | /* Lower PGA volume to reduce pops */ |
791 | if (w->id == snd_soc_dapm_pga && !w->power) | |
792 | dapm_set_pga(w, w->power); | |
81628103 MB |
793 | } |
794 | ||
795 | if (reg >= 0) { | |
796 | pop_dbg(codec->pop_time, | |
797 | "pop test : Applying 0x%x/0x%x to %x in %dms\n", | |
798 | value, mask, reg, codec->pop_time); | |
799 | pop_wait(codec->pop_time); | |
800 | snd_soc_update_bits(codec, reg, mask, value); | |
b22ead2a MB |
801 | } |
802 | ||
81628103 | 803 | list_for_each_entry(w, pending, power_list) { |
4f1c1923 MB |
804 | /* Raise PGA volume to reduce pops */ |
805 | if (w->id == snd_soc_dapm_pga && w->power) | |
806 | dapm_set_pga(w, w->power); | |
42aa3418 | 807 | |
81628103 MB |
808 | /* power up post event */ |
809 | if (w->power && w->event && | |
810 | (w->event_flags & SND_SOC_DAPM_POST_PMU)) { | |
811 | pop_dbg(codec->pop_time, "pop test : %s POST_PMU\n", | |
812 | w->name); | |
42aa3418 MB |
813 | ret = w->event(w, |
814 | NULL, SND_SOC_DAPM_POST_PMU); | |
815 | if (ret < 0) | |
81628103 MB |
816 | pr_err("%s: post event failed: %d\n", |
817 | w->name, ret); | |
818 | } | |
819 | ||
820 | /* power down post event */ | |
821 | if (!w->power && w->event && | |
822 | (w->event_flags & SND_SOC_DAPM_POST_PMD)) { | |
823 | pop_dbg(codec->pop_time, "pop test : %s POST_PMD\n", | |
824 | w->name); | |
825 | ret = w->event(w, NULL, SND_SOC_DAPM_POST_PMD); | |
42aa3418 | 826 | if (ret < 0) |
81628103 MB |
827 | pr_err("%s: post event failed: %d\n", |
828 | w->name, ret); | |
42aa3418 | 829 | } |
81628103 | 830 | } |
b22ead2a | 831 | } |
42aa3418 | 832 | |
b22ead2a MB |
833 | /* Apply a DAPM power sequence. |
834 | * | |
835 | * We walk over a pre-sorted list of widgets to apply power to. In | |
836 | * order to minimise the number of writes to the device required | |
837 | * multiple widgets will be updated in a single write where possible. | |
838 | * Currently anything that requires more than a single write is not | |
839 | * handled. | |
840 | */ | |
841 | static void dapm_seq_run(struct snd_soc_codec *codec, struct list_head *list, | |
842 | int event, int sort[]) | |
843 | { | |
844 | struct snd_soc_dapm_widget *w, *n; | |
845 | LIST_HEAD(pending); | |
846 | int cur_sort = -1; | |
847 | int cur_reg = SND_SOC_NOPM; | |
163cac06 MB |
848 | int ret; |
849 | ||
b22ead2a MB |
850 | list_for_each_entry_safe(w, n, list, power_list) { |
851 | ret = 0; | |
852 | ||
853 | /* Do we need to apply any queued changes? */ | |
854 | if (sort[w->id] != cur_sort || w->reg != cur_reg) { | |
855 | if (!list_empty(&pending)) | |
856 | dapm_seq_run_coalesced(codec, &pending); | |
857 | ||
858 | INIT_LIST_HEAD(&pending); | |
859 | cur_sort = -1; | |
860 | cur_reg = SND_SOC_NOPM; | |
861 | } | |
862 | ||
163cac06 MB |
863 | switch (w->id) { |
864 | case snd_soc_dapm_pre: | |
865 | if (!w->event) | |
b22ead2a MB |
866 | list_for_each_entry_safe_continue(w, n, list, |
867 | power_list); | |
163cac06 | 868 | |
b22ead2a | 869 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
870 | ret = w->event(w, |
871 | NULL, SND_SOC_DAPM_PRE_PMU); | |
b22ead2a | 872 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
873 | ret = w->event(w, |
874 | NULL, SND_SOC_DAPM_PRE_PMD); | |
163cac06 MB |
875 | break; |
876 | ||
877 | case snd_soc_dapm_post: | |
878 | if (!w->event) | |
b22ead2a MB |
879 | list_for_each_entry_safe_continue(w, n, list, |
880 | power_list); | |
163cac06 | 881 | |
b22ead2a | 882 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
883 | ret = w->event(w, |
884 | NULL, SND_SOC_DAPM_POST_PMU); | |
b22ead2a | 885 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
886 | ret = w->event(w, |
887 | NULL, SND_SOC_DAPM_POST_PMD); | |
163cac06 MB |
888 | break; |
889 | ||
b22ead2a MB |
890 | case snd_soc_dapm_input: |
891 | case snd_soc_dapm_output: | |
892 | case snd_soc_dapm_hp: | |
893 | case snd_soc_dapm_mic: | |
894 | case snd_soc_dapm_line: | |
895 | case snd_soc_dapm_spk: | |
896 | /* No register support currently */ | |
163cac06 | 897 | ret = dapm_generic_apply_power(w); |
163cac06 | 898 | break; |
b22ead2a MB |
899 | |
900 | default: | |
81628103 MB |
901 | /* Queue it up for application */ |
902 | cur_sort = sort[w->id]; | |
903 | cur_reg = w->reg; | |
904 | list_move(&w->power_list, &pending); | |
905 | break; | |
163cac06 | 906 | } |
b22ead2a MB |
907 | |
908 | if (ret < 0) | |
909 | pr_err("Failed to apply widget power: %d\n", | |
910 | ret); | |
6ea31b9f | 911 | } |
b22ead2a MB |
912 | |
913 | if (!list_empty(&pending)) | |
914 | dapm_seq_run_coalesced(codec, &pending); | |
42aa3418 MB |
915 | } |
916 | ||
2b97eabc RP |
917 | /* |
918 | * Scan each dapm widget for complete audio path. | |
919 | * A complete path is a route that has valid endpoints i.e.:- | |
920 | * | |
921 | * o DAC to output pin. | |
922 | * o Input Pin to ADC. | |
923 | * o Input pin to Output pin (bypass, sidetone) | |
924 | * o DAC to ADC (loopback). | |
925 | */ | |
d9c96cf3 | 926 | static int dapm_power_widgets(struct snd_soc_codec *codec, int event) |
2b97eabc | 927 | { |
452c5eaa | 928 | struct snd_soc_device *socdev = codec->socdev; |
2b97eabc | 929 | struct snd_soc_dapm_widget *w; |
291f3bbc MB |
930 | LIST_HEAD(up_list); |
931 | LIST_HEAD(down_list); | |
6d3ddc81 | 932 | int ret = 0; |
38357ab2 | 933 | int power; |
452c5eaa | 934 | int sys_power = 0; |
6d3ddc81 | 935 | |
6d3ddc81 MB |
936 | /* Check which widgets we need to power and store them in |
937 | * lists indicating if they should be powered up or down. | |
938 | */ | |
939 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
940 | switch (w->id) { | |
941 | case snd_soc_dapm_pre: | |
291f3bbc | 942 | dapm_seq_insert(w, &down_list, dapm_down_seq); |
6d3ddc81 MB |
943 | break; |
944 | case snd_soc_dapm_post: | |
291f3bbc | 945 | dapm_seq_insert(w, &up_list, dapm_up_seq); |
6d3ddc81 MB |
946 | break; |
947 | ||
948 | default: | |
949 | if (!w->power_check) | |
950 | continue; | |
951 | ||
952 | power = w->power_check(w); | |
452c5eaa MB |
953 | if (power) |
954 | sys_power = 1; | |
955 | ||
6d3ddc81 MB |
956 | if (w->power == power) |
957 | continue; | |
958 | ||
959 | if (power) | |
291f3bbc | 960 | dapm_seq_insert(w, &up_list, dapm_up_seq); |
6d3ddc81 | 961 | else |
291f3bbc | 962 | dapm_seq_insert(w, &down_list, dapm_down_seq); |
6d3ddc81 MB |
963 | |
964 | w->power = power; | |
965 | break; | |
966 | } | |
2b97eabc RP |
967 | } |
968 | ||
b14b76a5 MB |
969 | /* If there are no DAPM widgets then try to figure out power from the |
970 | * event type. | |
971 | */ | |
972 | if (list_empty(&codec->dapm_widgets)) { | |
973 | switch (event) { | |
974 | case SND_SOC_DAPM_STREAM_START: | |
975 | case SND_SOC_DAPM_STREAM_RESUME: | |
976 | sys_power = 1; | |
977 | break; | |
978 | case SND_SOC_DAPM_STREAM_NOP: | |
979 | sys_power = codec->bias_level != SND_SOC_BIAS_STANDBY; | |
980 | default: | |
981 | break; | |
982 | } | |
983 | } | |
984 | ||
452c5eaa MB |
985 | /* If we're changing to all on or all off then prepare */ |
986 | if ((sys_power && codec->bias_level == SND_SOC_BIAS_STANDBY) || | |
987 | (!sys_power && codec->bias_level == SND_SOC_BIAS_ON)) { | |
988 | ret = snd_soc_dapm_set_bias_level(socdev, | |
989 | SND_SOC_BIAS_PREPARE); | |
990 | if (ret != 0) | |
991 | pr_err("Failed to prepare bias: %d\n", ret); | |
992 | } | |
993 | ||
6d3ddc81 | 994 | /* Power down widgets first; try to avoid amplifying pops. */ |
291f3bbc | 995 | dapm_seq_run(codec, &down_list, event, dapm_down_seq); |
2b97eabc | 996 | |
6d3ddc81 | 997 | /* Now power up. */ |
291f3bbc | 998 | dapm_seq_run(codec, &up_list, event, dapm_up_seq); |
2b97eabc | 999 | |
452c5eaa MB |
1000 | /* If we just powered the last thing off drop to standby bias */ |
1001 | if (codec->bias_level == SND_SOC_BIAS_PREPARE && !sys_power) { | |
1002 | ret = snd_soc_dapm_set_bias_level(socdev, | |
1003 | SND_SOC_BIAS_STANDBY); | |
1004 | if (ret != 0) | |
1005 | pr_err("Failed to apply standby bias: %d\n", ret); | |
1006 | } | |
1007 | ||
1008 | /* If we just powered up then move to active bias */ | |
1009 | if (codec->bias_level == SND_SOC_BIAS_PREPARE && sys_power) { | |
1010 | ret = snd_soc_dapm_set_bias_level(socdev, | |
1011 | SND_SOC_BIAS_ON); | |
1012 | if (ret != 0) | |
1013 | pr_err("Failed to apply active bias: %d\n", ret); | |
1014 | } | |
1015 | ||
cb507e7e MB |
1016 | pop_dbg(codec->pop_time, "DAPM sequencing finished, waiting %dms\n", |
1017 | codec->pop_time); | |
1018 | ||
42aa3418 | 1019 | return 0; |
2b97eabc RP |
1020 | } |
1021 | ||
c1286b86 | 1022 | #ifdef DEBUG |
2b97eabc RP |
1023 | static void dbg_dump_dapm(struct snd_soc_codec* codec, const char *action) |
1024 | { | |
1025 | struct snd_soc_dapm_widget *w; | |
1026 | struct snd_soc_dapm_path *p = NULL; | |
1027 | int in, out; | |
1028 | ||
1029 | printk("DAPM %s %s\n", codec->name, action); | |
1030 | ||
1031 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
1032 | ||
1033 | /* only display widgets that effect routing */ | |
1034 | switch (w->id) { | |
1035 | case snd_soc_dapm_pre: | |
1036 | case snd_soc_dapm_post: | |
1037 | case snd_soc_dapm_vmid: | |
1038 | continue; | |
1039 | case snd_soc_dapm_mux: | |
2e72f8e3 | 1040 | case snd_soc_dapm_value_mux: |
2b97eabc RP |
1041 | case snd_soc_dapm_output: |
1042 | case snd_soc_dapm_input: | |
1043 | case snd_soc_dapm_switch: | |
1044 | case snd_soc_dapm_hp: | |
1045 | case snd_soc_dapm_mic: | |
1046 | case snd_soc_dapm_spk: | |
1047 | case snd_soc_dapm_line: | |
1048 | case snd_soc_dapm_micbias: | |
1049 | case snd_soc_dapm_dac: | |
1050 | case snd_soc_dapm_adc: | |
1051 | case snd_soc_dapm_pga: | |
1052 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1053 | case snd_soc_dapm_mixer_named_ctl: |
246d0a17 | 1054 | case snd_soc_dapm_supply: |
2b97eabc RP |
1055 | if (w->name) { |
1056 | in = is_connected_input_ep(w); | |
1057 | dapm_clear_walk(w->codec); | |
1058 | out = is_connected_output_ep(w); | |
1059 | dapm_clear_walk(w->codec); | |
1060 | printk("%s: %s in %d out %d\n", w->name, | |
1061 | w->power ? "On":"Off",in, out); | |
1062 | ||
1063 | list_for_each_entry(p, &w->sources, list_sink) { | |
1064 | if (p->connect) | |
1065 | printk(" in %s %s\n", p->name ? p->name : "static", | |
1066 | p->source->name); | |
1067 | } | |
1068 | list_for_each_entry(p, &w->sinks, list_source) { | |
2b97eabc RP |
1069 | if (p->connect) |
1070 | printk(" out %s %s\n", p->name ? p->name : "static", | |
1071 | p->sink->name); | |
1072 | } | |
1073 | } | |
1074 | break; | |
1075 | } | |
1076 | } | |
1077 | } | |
1078 | #endif | |
1079 | ||
1080 | /* test and update the power status of a mux widget */ | |
d9c96cf3 AB |
1081 | static int dapm_mux_update_power(struct snd_soc_dapm_widget *widget, |
1082 | struct snd_kcontrol *kcontrol, int mask, | |
cb01e2b9 | 1083 | int mux, int val, struct soc_enum *e) |
2b97eabc RP |
1084 | { |
1085 | struct snd_soc_dapm_path *path; | |
1086 | int found = 0; | |
1087 | ||
eff317d0 PU |
1088 | if (widget->id != snd_soc_dapm_mux && |
1089 | widget->id != snd_soc_dapm_value_mux) | |
2b97eabc RP |
1090 | return -ENODEV; |
1091 | ||
1092 | if (!snd_soc_test_bits(widget->codec, e->reg, mask, val)) | |
1093 | return 0; | |
1094 | ||
1095 | /* find dapm widget path assoc with kcontrol */ | |
1096 | list_for_each_entry(path, &widget->codec->dapm_paths, list) { | |
1097 | if (path->kcontrol != kcontrol) | |
1098 | continue; | |
1099 | ||
cb01e2b9 | 1100 | if (!path->name || !e->texts[mux]) |
2b97eabc RP |
1101 | continue; |
1102 | ||
1103 | found = 1; | |
1104 | /* we now need to match the string in the enum to the path */ | |
cb01e2b9 | 1105 | if (!(strcmp(path->name, e->texts[mux]))) |
2b97eabc RP |
1106 | path->connect = 1; /* new connection */ |
1107 | else | |
1108 | path->connect = 0; /* old connection must be powered down */ | |
1109 | } | |
1110 | ||
3fccd8b1 | 1111 | if (found) { |
2b97eabc | 1112 | dapm_power_widgets(widget->codec, SND_SOC_DAPM_STREAM_NOP); |
3fccd8b1 MB |
1113 | dump_dapm(widget->codec, "mux power update"); |
1114 | } | |
2b97eabc RP |
1115 | |
1116 | return 0; | |
1117 | } | |
2b97eabc | 1118 | |
1b075e3f | 1119 | /* test and update the power status of a mixer or switch widget */ |
d9c96cf3 AB |
1120 | static int dapm_mixer_update_power(struct snd_soc_dapm_widget *widget, |
1121 | struct snd_kcontrol *kcontrol, int reg, | |
1122 | int val_mask, int val, int invert) | |
2b97eabc RP |
1123 | { |
1124 | struct snd_soc_dapm_path *path; | |
1125 | int found = 0; | |
1126 | ||
1b075e3f | 1127 | if (widget->id != snd_soc_dapm_mixer && |
ca9c1aae | 1128 | widget->id != snd_soc_dapm_mixer_named_ctl && |
1b075e3f | 1129 | widget->id != snd_soc_dapm_switch) |
2b97eabc RP |
1130 | return -ENODEV; |
1131 | ||
1132 | if (!snd_soc_test_bits(widget->codec, reg, val_mask, val)) | |
1133 | return 0; | |
1134 | ||
1135 | /* find dapm widget path assoc with kcontrol */ | |
1136 | list_for_each_entry(path, &widget->codec->dapm_paths, list) { | |
1137 | if (path->kcontrol != kcontrol) | |
1138 | continue; | |
1139 | ||
1140 | /* found, now check type */ | |
1141 | found = 1; | |
1142 | if (val) | |
1143 | /* new connection */ | |
1144 | path->connect = invert ? 0:1; | |
1145 | else | |
1146 | /* old connection must be powered down */ | |
1147 | path->connect = invert ? 1:0; | |
1148 | break; | |
1149 | } | |
1150 | ||
3fccd8b1 | 1151 | if (found) { |
2b97eabc | 1152 | dapm_power_widgets(widget->codec, SND_SOC_DAPM_STREAM_NOP); |
3fccd8b1 MB |
1153 | dump_dapm(widget->codec, "mixer power update"); |
1154 | } | |
2b97eabc RP |
1155 | |
1156 | return 0; | |
1157 | } | |
2b97eabc RP |
1158 | |
1159 | /* show dapm widget status in sys fs */ | |
1160 | static ssize_t dapm_widget_show(struct device *dev, | |
1161 | struct device_attribute *attr, char *buf) | |
1162 | { | |
1163 | struct snd_soc_device *devdata = dev_get_drvdata(dev); | |
6627a653 | 1164 | struct snd_soc_codec *codec = devdata->card->codec; |
2b97eabc RP |
1165 | struct snd_soc_dapm_widget *w; |
1166 | int count = 0; | |
1167 | char *state = "not set"; | |
1168 | ||
1169 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
1170 | ||
1171 | /* only display widgets that burnm power */ | |
1172 | switch (w->id) { | |
1173 | case snd_soc_dapm_hp: | |
1174 | case snd_soc_dapm_mic: | |
1175 | case snd_soc_dapm_spk: | |
1176 | case snd_soc_dapm_line: | |
1177 | case snd_soc_dapm_micbias: | |
1178 | case snd_soc_dapm_dac: | |
1179 | case snd_soc_dapm_adc: | |
1180 | case snd_soc_dapm_pga: | |
1181 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1182 | case snd_soc_dapm_mixer_named_ctl: |
246d0a17 | 1183 | case snd_soc_dapm_supply: |
2b97eabc RP |
1184 | if (w->name) |
1185 | count += sprintf(buf + count, "%s: %s\n", | |
1186 | w->name, w->power ? "On":"Off"); | |
1187 | break; | |
1188 | default: | |
1189 | break; | |
1190 | } | |
1191 | } | |
1192 | ||
0be9898a MB |
1193 | switch (codec->bias_level) { |
1194 | case SND_SOC_BIAS_ON: | |
1195 | state = "On"; | |
2b97eabc | 1196 | break; |
0be9898a MB |
1197 | case SND_SOC_BIAS_PREPARE: |
1198 | state = "Prepare"; | |
2b97eabc | 1199 | break; |
0be9898a MB |
1200 | case SND_SOC_BIAS_STANDBY: |
1201 | state = "Standby"; | |
2b97eabc | 1202 | break; |
0be9898a MB |
1203 | case SND_SOC_BIAS_OFF: |
1204 | state = "Off"; | |
2b97eabc RP |
1205 | break; |
1206 | } | |
1207 | count += sprintf(buf + count, "PM State: %s\n", state); | |
1208 | ||
1209 | return count; | |
1210 | } | |
1211 | ||
1212 | static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL); | |
1213 | ||
1214 | int snd_soc_dapm_sys_add(struct device *dev) | |
1215 | { | |
12ef193d | 1216 | return device_create_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1217 | } |
1218 | ||
1219 | static void snd_soc_dapm_sys_remove(struct device *dev) | |
1220 | { | |
aef90843 | 1221 | device_remove_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1222 | } |
1223 | ||
1224 | /* free all dapm widgets and resources */ | |
d9c96cf3 | 1225 | static void dapm_free_widgets(struct snd_soc_codec *codec) |
2b97eabc RP |
1226 | { |
1227 | struct snd_soc_dapm_widget *w, *next_w; | |
1228 | struct snd_soc_dapm_path *p, *next_p; | |
1229 | ||
1230 | list_for_each_entry_safe(w, next_w, &codec->dapm_widgets, list) { | |
1231 | list_del(&w->list); | |
1232 | kfree(w); | |
1233 | } | |
1234 | ||
1235 | list_for_each_entry_safe(p, next_p, &codec->dapm_paths, list) { | |
1236 | list_del(&p->list); | |
1237 | kfree(p->long_name); | |
1238 | kfree(p); | |
1239 | } | |
1240 | } | |
1241 | ||
a5302181 | 1242 | static int snd_soc_dapm_set_pin(struct snd_soc_codec *codec, |
1649923d | 1243 | const char *pin, int status) |
a5302181 LG |
1244 | { |
1245 | struct snd_soc_dapm_widget *w; | |
1246 | ||
1247 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
1248 | if (!strcmp(w->name, pin)) { | |
c1286b86 | 1249 | pr_debug("dapm: %s: pin %s\n", codec->name, pin); |
a5302181 LG |
1250 | w->connected = status; |
1251 | return 0; | |
1252 | } | |
1253 | } | |
1254 | ||
c1286b86 | 1255 | pr_err("dapm: %s: configuring unknown pin %s\n", codec->name, pin); |
a5302181 LG |
1256 | return -EINVAL; |
1257 | } | |
1258 | ||
2b97eabc | 1259 | /** |
a5302181 | 1260 | * snd_soc_dapm_sync - scan and power dapm paths |
2b97eabc RP |
1261 | * @codec: audio codec |
1262 | * | |
1263 | * Walks all dapm audio paths and powers widgets according to their | |
1264 | * stream or path usage. | |
1265 | * | |
1266 | * Returns 0 for success. | |
1267 | */ | |
a5302181 | 1268 | int snd_soc_dapm_sync(struct snd_soc_codec *codec) |
2b97eabc | 1269 | { |
3fccd8b1 MB |
1270 | int ret = dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP); |
1271 | dump_dapm(codec, "sync"); | |
1272 | return ret; | |
2b97eabc | 1273 | } |
a5302181 | 1274 | EXPORT_SYMBOL_GPL(snd_soc_dapm_sync); |
2b97eabc | 1275 | |
105f1c28 MB |
1276 | static int snd_soc_dapm_add_route(struct snd_soc_codec *codec, |
1277 | const char *sink, const char *control, const char *source) | |
2b97eabc RP |
1278 | { |
1279 | struct snd_soc_dapm_path *path; | |
1280 | struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w; | |
1281 | int ret = 0; | |
1282 | ||
1283 | /* find src and dest widgets */ | |
1284 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
1285 | ||
1286 | if (!wsink && !(strcmp(w->name, sink))) { | |
1287 | wsink = w; | |
1288 | continue; | |
1289 | } | |
1290 | if (!wsource && !(strcmp(w->name, source))) { | |
1291 | wsource = w; | |
1292 | } | |
1293 | } | |
1294 | ||
1295 | if (wsource == NULL || wsink == NULL) | |
1296 | return -ENODEV; | |
1297 | ||
1298 | path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL); | |
1299 | if (!path) | |
1300 | return -ENOMEM; | |
1301 | ||
1302 | path->source = wsource; | |
1303 | path->sink = wsink; | |
1304 | INIT_LIST_HEAD(&path->list); | |
1305 | INIT_LIST_HEAD(&path->list_source); | |
1306 | INIT_LIST_HEAD(&path->list_sink); | |
1307 | ||
1308 | /* check for external widgets */ | |
1309 | if (wsink->id == snd_soc_dapm_input) { | |
1310 | if (wsource->id == snd_soc_dapm_micbias || | |
1311 | wsource->id == snd_soc_dapm_mic || | |
087d53ab RC |
1312 | wsource->id == snd_soc_dapm_line || |
1313 | wsource->id == snd_soc_dapm_output) | |
2b97eabc RP |
1314 | wsink->ext = 1; |
1315 | } | |
1316 | if (wsource->id == snd_soc_dapm_output) { | |
1317 | if (wsink->id == snd_soc_dapm_spk || | |
1318 | wsink->id == snd_soc_dapm_hp || | |
1e39221e SF |
1319 | wsink->id == snd_soc_dapm_line || |
1320 | wsink->id == snd_soc_dapm_input) | |
2b97eabc RP |
1321 | wsource->ext = 1; |
1322 | } | |
1323 | ||
1324 | /* connect static paths */ | |
1325 | if (control == NULL) { | |
1326 | list_add(&path->list, &codec->dapm_paths); | |
1327 | list_add(&path->list_sink, &wsink->sources); | |
1328 | list_add(&path->list_source, &wsource->sinks); | |
1329 | path->connect = 1; | |
1330 | return 0; | |
1331 | } | |
1332 | ||
1333 | /* connect dynamic paths */ | |
1334 | switch(wsink->id) { | |
1335 | case snd_soc_dapm_adc: | |
1336 | case snd_soc_dapm_dac: | |
1337 | case snd_soc_dapm_pga: | |
1338 | case snd_soc_dapm_input: | |
1339 | case snd_soc_dapm_output: | |
1340 | case snd_soc_dapm_micbias: | |
1341 | case snd_soc_dapm_vmid: | |
1342 | case snd_soc_dapm_pre: | |
1343 | case snd_soc_dapm_post: | |
246d0a17 | 1344 | case snd_soc_dapm_supply: |
2b97eabc RP |
1345 | list_add(&path->list, &codec->dapm_paths); |
1346 | list_add(&path->list_sink, &wsink->sources); | |
1347 | list_add(&path->list_source, &wsource->sinks); | |
1348 | path->connect = 1; | |
1349 | return 0; | |
1350 | case snd_soc_dapm_mux: | |
74155556 | 1351 | case snd_soc_dapm_value_mux: |
2b97eabc RP |
1352 | ret = dapm_connect_mux(codec, wsource, wsink, path, control, |
1353 | &wsink->kcontrols[0]); | |
1354 | if (ret != 0) | |
1355 | goto err; | |
1356 | break; | |
1357 | case snd_soc_dapm_switch: | |
1358 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1359 | case snd_soc_dapm_mixer_named_ctl: |
2b97eabc RP |
1360 | ret = dapm_connect_mixer(codec, wsource, wsink, path, control); |
1361 | if (ret != 0) | |
1362 | goto err; | |
1363 | break; | |
1364 | case snd_soc_dapm_hp: | |
1365 | case snd_soc_dapm_mic: | |
1366 | case snd_soc_dapm_line: | |
1367 | case snd_soc_dapm_spk: | |
1368 | list_add(&path->list, &codec->dapm_paths); | |
1369 | list_add(&path->list_sink, &wsink->sources); | |
1370 | list_add(&path->list_source, &wsource->sinks); | |
1371 | path->connect = 0; | |
1372 | return 0; | |
1373 | } | |
1374 | return 0; | |
1375 | ||
1376 | err: | |
1377 | printk(KERN_WARNING "asoc: no dapm match for %s --> %s --> %s\n", source, | |
1378 | control, sink); | |
1379 | kfree(path); | |
1380 | return ret; | |
1381 | } | |
105f1c28 | 1382 | |
105f1c28 MB |
1383 | /** |
1384 | * snd_soc_dapm_add_routes - Add routes between DAPM widgets | |
1385 | * @codec: codec | |
1386 | * @route: audio routes | |
1387 | * @num: number of routes | |
1388 | * | |
1389 | * Connects 2 dapm widgets together via a named audio path. The sink is | |
1390 | * the widget receiving the audio signal, whilst the source is the sender | |
1391 | * of the audio signal. | |
1392 | * | |
1393 | * Returns 0 for success else error. On error all resources can be freed | |
1394 | * with a call to snd_soc_card_free(). | |
1395 | */ | |
1396 | int snd_soc_dapm_add_routes(struct snd_soc_codec *codec, | |
1397 | const struct snd_soc_dapm_route *route, int num) | |
1398 | { | |
1399 | int i, ret; | |
1400 | ||
1401 | for (i = 0; i < num; i++) { | |
1402 | ret = snd_soc_dapm_add_route(codec, route->sink, | |
1403 | route->control, route->source); | |
1404 | if (ret < 0) { | |
1405 | printk(KERN_ERR "Failed to add route %s->%s\n", | |
1406 | route->source, | |
1407 | route->sink); | |
1408 | return ret; | |
1409 | } | |
1410 | route++; | |
1411 | } | |
1412 | ||
1413 | return 0; | |
1414 | } | |
1415 | EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes); | |
1416 | ||
2b97eabc RP |
1417 | /** |
1418 | * snd_soc_dapm_new_widgets - add new dapm widgets | |
1419 | * @codec: audio codec | |
1420 | * | |
1421 | * Checks the codec for any new dapm widgets and creates them if found. | |
1422 | * | |
1423 | * Returns 0 for success. | |
1424 | */ | |
1425 | int snd_soc_dapm_new_widgets(struct snd_soc_codec *codec) | |
1426 | { | |
1427 | struct snd_soc_dapm_widget *w; | |
1428 | ||
2b97eabc RP |
1429 | list_for_each_entry(w, &codec->dapm_widgets, list) |
1430 | { | |
1431 | if (w->new) | |
1432 | continue; | |
1433 | ||
1434 | switch(w->id) { | |
1435 | case snd_soc_dapm_switch: | |
1436 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1437 | case snd_soc_dapm_mixer_named_ctl: |
b75576d7 | 1438 | w->power_check = dapm_generic_check_power; |
2b97eabc RP |
1439 | dapm_new_mixer(codec, w); |
1440 | break; | |
1441 | case snd_soc_dapm_mux: | |
2e72f8e3 | 1442 | case snd_soc_dapm_value_mux: |
b75576d7 | 1443 | w->power_check = dapm_generic_check_power; |
2b97eabc RP |
1444 | dapm_new_mux(codec, w); |
1445 | break; | |
1446 | case snd_soc_dapm_adc: | |
b75576d7 MB |
1447 | w->power_check = dapm_adc_check_power; |
1448 | break; | |
2b97eabc | 1449 | case snd_soc_dapm_dac: |
b75576d7 MB |
1450 | w->power_check = dapm_dac_check_power; |
1451 | break; | |
2b97eabc | 1452 | case snd_soc_dapm_pga: |
b75576d7 | 1453 | w->power_check = dapm_generic_check_power; |
2b97eabc RP |
1454 | dapm_new_pga(codec, w); |
1455 | break; | |
1456 | case snd_soc_dapm_input: | |
1457 | case snd_soc_dapm_output: | |
1458 | case snd_soc_dapm_micbias: | |
1459 | case snd_soc_dapm_spk: | |
1460 | case snd_soc_dapm_hp: | |
1461 | case snd_soc_dapm_mic: | |
1462 | case snd_soc_dapm_line: | |
b75576d7 MB |
1463 | w->power_check = dapm_generic_check_power; |
1464 | break; | |
246d0a17 MB |
1465 | case snd_soc_dapm_supply: |
1466 | w->power_check = dapm_supply_check_power; | |
2b97eabc RP |
1467 | case snd_soc_dapm_vmid: |
1468 | case snd_soc_dapm_pre: | |
1469 | case snd_soc_dapm_post: | |
1470 | break; | |
1471 | } | |
1472 | w->new = 1; | |
1473 | } | |
1474 | ||
1475 | dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP); | |
2b97eabc RP |
1476 | return 0; |
1477 | } | |
1478 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets); | |
1479 | ||
1480 | /** | |
1481 | * snd_soc_dapm_get_volsw - dapm mixer get callback | |
1482 | * @kcontrol: mixer control | |
ac11a2b3 | 1483 | * @ucontrol: control element information |
2b97eabc RP |
1484 | * |
1485 | * Callback to get the value of a dapm mixer control. | |
1486 | * | |
1487 | * Returns 0 for success. | |
1488 | */ | |
1489 | int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol, | |
1490 | struct snd_ctl_elem_value *ucontrol) | |
1491 | { | |
1492 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
4eaa9819 JS |
1493 | struct soc_mixer_control *mc = |
1494 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
1495 | unsigned int reg = mc->reg; |
1496 | unsigned int shift = mc->shift; | |
1497 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1498 | int max = mc->max; |
815ecf8d JS |
1499 | unsigned int invert = mc->invert; |
1500 | unsigned int mask = (1 << fls(max)) - 1; | |
2b97eabc RP |
1501 | |
1502 | /* return the saved value if we are powered down */ | |
1503 | if (widget->id == snd_soc_dapm_pga && !widget->power) { | |
1504 | ucontrol->value.integer.value[0] = widget->saved_value; | |
1505 | return 0; | |
1506 | } | |
1507 | ||
1508 | ucontrol->value.integer.value[0] = | |
1509 | (snd_soc_read(widget->codec, reg) >> shift) & mask; | |
1510 | if (shift != rshift) | |
1511 | ucontrol->value.integer.value[1] = | |
1512 | (snd_soc_read(widget->codec, reg) >> rshift) & mask; | |
1513 | if (invert) { | |
1514 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1515 | max - ucontrol->value.integer.value[0]; |
2b97eabc RP |
1516 | if (shift != rshift) |
1517 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 1518 | max - ucontrol->value.integer.value[1]; |
2b97eabc RP |
1519 | } |
1520 | ||
1521 | return 0; | |
1522 | } | |
1523 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw); | |
1524 | ||
1525 | /** | |
1526 | * snd_soc_dapm_put_volsw - dapm mixer set callback | |
1527 | * @kcontrol: mixer control | |
ac11a2b3 | 1528 | * @ucontrol: control element information |
2b97eabc RP |
1529 | * |
1530 | * Callback to set the value of a dapm mixer control. | |
1531 | * | |
1532 | * Returns 0 for success. | |
1533 | */ | |
1534 | int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, | |
1535 | struct snd_ctl_elem_value *ucontrol) | |
1536 | { | |
1537 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
4eaa9819 JS |
1538 | struct soc_mixer_control *mc = |
1539 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
1540 | unsigned int reg = mc->reg; |
1541 | unsigned int shift = mc->shift; | |
1542 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1543 | int max = mc->max; |
815ecf8d JS |
1544 | unsigned int mask = (1 << fls(max)) - 1; |
1545 | unsigned int invert = mc->invert; | |
46f5822f | 1546 | unsigned int val, val2, val_mask; |
2b97eabc RP |
1547 | int ret; |
1548 | ||
1549 | val = (ucontrol->value.integer.value[0] & mask); | |
1550 | ||
1551 | if (invert) | |
a7a4ac86 | 1552 | val = max - val; |
2b97eabc RP |
1553 | val_mask = mask << shift; |
1554 | val = val << shift; | |
1555 | if (shift != rshift) { | |
1556 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1557 | if (invert) | |
a7a4ac86 | 1558 | val2 = max - val2; |
2b97eabc RP |
1559 | val_mask |= mask << rshift; |
1560 | val |= val2 << rshift; | |
1561 | } | |
1562 | ||
1563 | mutex_lock(&widget->codec->mutex); | |
1564 | widget->value = val; | |
1565 | ||
1566 | /* save volume value if the widget is powered down */ | |
1567 | if (widget->id == snd_soc_dapm_pga && !widget->power) { | |
1568 | widget->saved_value = val; | |
1569 | mutex_unlock(&widget->codec->mutex); | |
1570 | return 1; | |
1571 | } | |
1572 | ||
1573 | dapm_mixer_update_power(widget, kcontrol, reg, val_mask, val, invert); | |
1574 | if (widget->event) { | |
1575 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
9af6d956 LG |
1576 | ret = widget->event(widget, kcontrol, |
1577 | SND_SOC_DAPM_PRE_REG); | |
1578 | if (ret < 0) { | |
1579 | ret = 1; | |
2b97eabc | 1580 | goto out; |
9af6d956 | 1581 | } |
2b97eabc RP |
1582 | } |
1583 | ret = snd_soc_update_bits(widget->codec, reg, val_mask, val); | |
1584 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
9af6d956 LG |
1585 | ret = widget->event(widget, kcontrol, |
1586 | SND_SOC_DAPM_POST_REG); | |
2b97eabc RP |
1587 | } else |
1588 | ret = snd_soc_update_bits(widget->codec, reg, val_mask, val); | |
1589 | ||
1590 | out: | |
1591 | mutex_unlock(&widget->codec->mutex); | |
1592 | return ret; | |
1593 | } | |
1594 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw); | |
1595 | ||
1596 | /** | |
1597 | * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback | |
1598 | * @kcontrol: mixer control | |
ac11a2b3 | 1599 | * @ucontrol: control element information |
2b97eabc RP |
1600 | * |
1601 | * Callback to get the value of a dapm enumerated double mixer control. | |
1602 | * | |
1603 | * Returns 0 for success. | |
1604 | */ | |
1605 | int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol, | |
1606 | struct snd_ctl_elem_value *ucontrol) | |
1607 | { | |
1608 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1609 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
46f5822f | 1610 | unsigned int val, bitmask; |
2b97eabc | 1611 | |
f8ba0b7b | 1612 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
1613 | ; |
1614 | val = snd_soc_read(widget->codec, e->reg); | |
1615 | ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1); | |
1616 | if (e->shift_l != e->shift_r) | |
1617 | ucontrol->value.enumerated.item[1] = | |
1618 | (val >> e->shift_r) & (bitmask - 1); | |
1619 | ||
1620 | return 0; | |
1621 | } | |
1622 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double); | |
1623 | ||
1624 | /** | |
1625 | * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback | |
1626 | * @kcontrol: mixer control | |
ac11a2b3 | 1627 | * @ucontrol: control element information |
2b97eabc RP |
1628 | * |
1629 | * Callback to set the value of a dapm enumerated double mixer control. | |
1630 | * | |
1631 | * Returns 0 for success. | |
1632 | */ | |
1633 | int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, | |
1634 | struct snd_ctl_elem_value *ucontrol) | |
1635 | { | |
1636 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1637 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
46f5822f DR |
1638 | unsigned int val, mux; |
1639 | unsigned int mask, bitmask; | |
2b97eabc RP |
1640 | int ret = 0; |
1641 | ||
f8ba0b7b | 1642 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc | 1643 | ; |
f8ba0b7b | 1644 | if (ucontrol->value.enumerated.item[0] > e->max - 1) |
2b97eabc RP |
1645 | return -EINVAL; |
1646 | mux = ucontrol->value.enumerated.item[0]; | |
1647 | val = mux << e->shift_l; | |
1648 | mask = (bitmask - 1) << e->shift_l; | |
1649 | if (e->shift_l != e->shift_r) { | |
f8ba0b7b | 1650 | if (ucontrol->value.enumerated.item[1] > e->max - 1) |
2b97eabc RP |
1651 | return -EINVAL; |
1652 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
1653 | mask |= (bitmask - 1) << e->shift_r; | |
1654 | } | |
1655 | ||
1656 | mutex_lock(&widget->codec->mutex); | |
1657 | widget->value = val; | |
cb01e2b9 | 1658 | dapm_mux_update_power(widget, kcontrol, mask, mux, val, e); |
2b97eabc RP |
1659 | if (widget->event) { |
1660 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
9af6d956 LG |
1661 | ret = widget->event(widget, |
1662 | kcontrol, SND_SOC_DAPM_PRE_REG); | |
2b97eabc RP |
1663 | if (ret < 0) |
1664 | goto out; | |
1665 | } | |
1666 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1667 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
9af6d956 LG |
1668 | ret = widget->event(widget, |
1669 | kcontrol, SND_SOC_DAPM_POST_REG); | |
2b97eabc RP |
1670 | } else |
1671 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1672 | ||
1673 | out: | |
1674 | mutex_unlock(&widget->codec->mutex); | |
1675 | return ret; | |
1676 | } | |
1677 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double); | |
1678 | ||
2e72f8e3 PU |
1679 | /** |
1680 | * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get | |
1681 | * callback | |
1682 | * @kcontrol: mixer control | |
1683 | * @ucontrol: control element information | |
1684 | * | |
1685 | * Callback to get the value of a dapm semi enumerated double mixer control. | |
1686 | * | |
1687 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
1688 | * used for handling bitfield coded enumeration for example. | |
1689 | * | |
1690 | * Returns 0 for success. | |
1691 | */ | |
1692 | int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol *kcontrol, | |
1693 | struct snd_ctl_elem_value *ucontrol) | |
1694 | { | |
1695 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
74155556 | 1696 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f | 1697 | unsigned int reg_val, val, mux; |
2e72f8e3 PU |
1698 | |
1699 | reg_val = snd_soc_read(widget->codec, e->reg); | |
1700 | val = (reg_val >> e->shift_l) & e->mask; | |
1701 | for (mux = 0; mux < e->max; mux++) { | |
1702 | if (val == e->values[mux]) | |
1703 | break; | |
1704 | } | |
1705 | ucontrol->value.enumerated.item[0] = mux; | |
1706 | if (e->shift_l != e->shift_r) { | |
1707 | val = (reg_val >> e->shift_r) & e->mask; | |
1708 | for (mux = 0; mux < e->max; mux++) { | |
1709 | if (val == e->values[mux]) | |
1710 | break; | |
1711 | } | |
1712 | ucontrol->value.enumerated.item[1] = mux; | |
1713 | } | |
1714 | ||
1715 | return 0; | |
1716 | } | |
1717 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double); | |
1718 | ||
1719 | /** | |
1720 | * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set | |
1721 | * callback | |
1722 | * @kcontrol: mixer control | |
1723 | * @ucontrol: control element information | |
1724 | * | |
1725 | * Callback to set the value of a dapm semi enumerated double mixer control. | |
1726 | * | |
1727 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
1728 | * used for handling bitfield coded enumeration for example. | |
1729 | * | |
1730 | * Returns 0 for success. | |
1731 | */ | |
1732 | int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol, | |
1733 | struct snd_ctl_elem_value *ucontrol) | |
1734 | { | |
1735 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
74155556 | 1736 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f DR |
1737 | unsigned int val, mux; |
1738 | unsigned int mask; | |
2e72f8e3 PU |
1739 | int ret = 0; |
1740 | ||
1741 | if (ucontrol->value.enumerated.item[0] > e->max - 1) | |
1742 | return -EINVAL; | |
1743 | mux = ucontrol->value.enumerated.item[0]; | |
1744 | val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l; | |
1745 | mask = e->mask << e->shift_l; | |
1746 | if (e->shift_l != e->shift_r) { | |
1747 | if (ucontrol->value.enumerated.item[1] > e->max - 1) | |
1748 | return -EINVAL; | |
1749 | val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r; | |
1750 | mask |= e->mask << e->shift_r; | |
1751 | } | |
1752 | ||
1753 | mutex_lock(&widget->codec->mutex); | |
1754 | widget->value = val; | |
74155556 | 1755 | dapm_mux_update_power(widget, kcontrol, mask, mux, val, e); |
2e72f8e3 PU |
1756 | if (widget->event) { |
1757 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
1758 | ret = widget->event(widget, | |
1759 | kcontrol, SND_SOC_DAPM_PRE_REG); | |
1760 | if (ret < 0) | |
1761 | goto out; | |
1762 | } | |
1763 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1764 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
1765 | ret = widget->event(widget, | |
1766 | kcontrol, SND_SOC_DAPM_POST_REG); | |
1767 | } else | |
1768 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1769 | ||
1770 | out: | |
1771 | mutex_unlock(&widget->codec->mutex); | |
1772 | return ret; | |
1773 | } | |
1774 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double); | |
1775 | ||
8b37dbd2 MB |
1776 | /** |
1777 | * snd_soc_dapm_info_pin_switch - Info for a pin switch | |
1778 | * | |
1779 | * @kcontrol: mixer control | |
1780 | * @uinfo: control element information | |
1781 | * | |
1782 | * Callback to provide information about a pin switch control. | |
1783 | */ | |
1784 | int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol, | |
1785 | struct snd_ctl_elem_info *uinfo) | |
1786 | { | |
1787 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1788 | uinfo->count = 1; | |
1789 | uinfo->value.integer.min = 0; | |
1790 | uinfo->value.integer.max = 1; | |
1791 | ||
1792 | return 0; | |
1793 | } | |
1794 | EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch); | |
1795 | ||
1796 | /** | |
1797 | * snd_soc_dapm_get_pin_switch - Get information for a pin switch | |
1798 | * | |
1799 | * @kcontrol: mixer control | |
1800 | * @ucontrol: Value | |
1801 | */ | |
1802 | int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol, | |
1803 | struct snd_ctl_elem_value *ucontrol) | |
1804 | { | |
1805 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1806 | const char *pin = (const char *)kcontrol->private_value; | |
1807 | ||
1808 | mutex_lock(&codec->mutex); | |
1809 | ||
1810 | ucontrol->value.integer.value[0] = | |
1811 | snd_soc_dapm_get_pin_status(codec, pin); | |
1812 | ||
1813 | mutex_unlock(&codec->mutex); | |
1814 | ||
1815 | return 0; | |
1816 | } | |
1817 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch); | |
1818 | ||
1819 | /** | |
1820 | * snd_soc_dapm_put_pin_switch - Set information for a pin switch | |
1821 | * | |
1822 | * @kcontrol: mixer control | |
1823 | * @ucontrol: Value | |
1824 | */ | |
1825 | int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol, | |
1826 | struct snd_ctl_elem_value *ucontrol) | |
1827 | { | |
1828 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1829 | const char *pin = (const char *)kcontrol->private_value; | |
1830 | ||
1831 | mutex_lock(&codec->mutex); | |
1832 | ||
1833 | if (ucontrol->value.integer.value[0]) | |
1834 | snd_soc_dapm_enable_pin(codec, pin); | |
1835 | else | |
1836 | snd_soc_dapm_disable_pin(codec, pin); | |
1837 | ||
1838 | snd_soc_dapm_sync(codec); | |
1839 | ||
1840 | mutex_unlock(&codec->mutex); | |
1841 | ||
1842 | return 0; | |
1843 | } | |
1844 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch); | |
1845 | ||
2b97eabc RP |
1846 | /** |
1847 | * snd_soc_dapm_new_control - create new dapm control | |
1848 | * @codec: audio codec | |
1849 | * @widget: widget template | |
1850 | * | |
1851 | * Creates a new dapm control based upon the template. | |
1852 | * | |
1853 | * Returns 0 for success else error. | |
1854 | */ | |
1855 | int snd_soc_dapm_new_control(struct snd_soc_codec *codec, | |
1856 | const struct snd_soc_dapm_widget *widget) | |
1857 | { | |
1858 | struct snd_soc_dapm_widget *w; | |
1859 | ||
1860 | if ((w = dapm_cnew_widget(widget)) == NULL) | |
1861 | return -ENOMEM; | |
1862 | ||
1863 | w->codec = codec; | |
1864 | INIT_LIST_HEAD(&w->sources); | |
1865 | INIT_LIST_HEAD(&w->sinks); | |
1866 | INIT_LIST_HEAD(&w->list); | |
1867 | list_add(&w->list, &codec->dapm_widgets); | |
1868 | ||
1869 | /* machine layer set ups unconnected pins and insertions */ | |
1870 | w->connected = 1; | |
1871 | return 0; | |
1872 | } | |
1873 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control); | |
1874 | ||
4ba1327a MB |
1875 | /** |
1876 | * snd_soc_dapm_new_controls - create new dapm controls | |
1877 | * @codec: audio codec | |
1878 | * @widget: widget array | |
1879 | * @num: number of widgets | |
1880 | * | |
1881 | * Creates new DAPM controls based upon the templates. | |
1882 | * | |
1883 | * Returns 0 for success else error. | |
1884 | */ | |
1885 | int snd_soc_dapm_new_controls(struct snd_soc_codec *codec, | |
1886 | const struct snd_soc_dapm_widget *widget, | |
1887 | int num) | |
1888 | { | |
1889 | int i, ret; | |
1890 | ||
1891 | for (i = 0; i < num; i++) { | |
1892 | ret = snd_soc_dapm_new_control(codec, widget); | |
b8b33cb5 MB |
1893 | if (ret < 0) { |
1894 | printk(KERN_ERR | |
1895 | "ASoC: Failed to create DAPM control %s: %d\n", | |
1896 | widget->name, ret); | |
4ba1327a | 1897 | return ret; |
b8b33cb5 | 1898 | } |
4ba1327a MB |
1899 | widget++; |
1900 | } | |
1901 | return 0; | |
1902 | } | |
1903 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls); | |
1904 | ||
1905 | ||
2b97eabc RP |
1906 | /** |
1907 | * snd_soc_dapm_stream_event - send a stream event to the dapm core | |
1908 | * @codec: audio codec | |
1909 | * @stream: stream name | |
1910 | * @event: stream event | |
1911 | * | |
1912 | * Sends a stream event to the dapm core. The core then makes any | |
1913 | * necessary widget power changes. | |
1914 | * | |
1915 | * Returns 0 for success else error. | |
1916 | */ | |
1917 | int snd_soc_dapm_stream_event(struct snd_soc_codec *codec, | |
1918 | char *stream, int event) | |
1919 | { | |
1920 | struct snd_soc_dapm_widget *w; | |
1921 | ||
11da21a7 SF |
1922 | if (stream == NULL) |
1923 | return 0; | |
1924 | ||
2b97eabc RP |
1925 | mutex_lock(&codec->mutex); |
1926 | list_for_each_entry(w, &codec->dapm_widgets, list) | |
1927 | { | |
1928 | if (!w->sname) | |
1929 | continue; | |
c1286b86 MB |
1930 | pr_debug("widget %s\n %s stream %s event %d\n", |
1931 | w->name, w->sname, stream, event); | |
2b97eabc RP |
1932 | if (strstr(w->sname, stream)) { |
1933 | switch(event) { | |
1934 | case SND_SOC_DAPM_STREAM_START: | |
1935 | w->active = 1; | |
1936 | break; | |
1937 | case SND_SOC_DAPM_STREAM_STOP: | |
1938 | w->active = 0; | |
1939 | break; | |
1940 | case SND_SOC_DAPM_STREAM_SUSPEND: | |
1941 | if (w->active) | |
1942 | w->suspend = 1; | |
1943 | w->active = 0; | |
1944 | break; | |
1945 | case SND_SOC_DAPM_STREAM_RESUME: | |
1946 | if (w->suspend) { | |
1947 | w->active = 1; | |
1948 | w->suspend = 0; | |
1949 | } | |
1950 | break; | |
1951 | case SND_SOC_DAPM_STREAM_PAUSE_PUSH: | |
1952 | break; | |
1953 | case SND_SOC_DAPM_STREAM_PAUSE_RELEASE: | |
1954 | break; | |
1955 | } | |
1956 | } | |
1957 | } | |
1958 | mutex_unlock(&codec->mutex); | |
1959 | ||
1960 | dapm_power_widgets(codec, event); | |
9bf8e7dd | 1961 | dump_dapm(codec, __func__); |
2b97eabc RP |
1962 | return 0; |
1963 | } | |
1964 | EXPORT_SYMBOL_GPL(snd_soc_dapm_stream_event); | |
1965 | ||
1966 | /** | |
a5302181 | 1967 | * snd_soc_dapm_enable_pin - enable pin. |
ac11a2b3 | 1968 | * @codec: SoC codec |
a5302181 | 1969 | * @pin: pin name |
2b97eabc | 1970 | * |
74b8f955 | 1971 | * Enables input/output pin and its parents or children widgets iff there is |
a5302181 LG |
1972 | * a valid audio route and active audio stream. |
1973 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
1974 | * do any widget power switching. | |
2b97eabc | 1975 | */ |
1649923d | 1976 | int snd_soc_dapm_enable_pin(struct snd_soc_codec *codec, const char *pin) |
2b97eabc | 1977 | { |
a5302181 LG |
1978 | return snd_soc_dapm_set_pin(codec, pin, 1); |
1979 | } | |
1980 | EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin); | |
2b97eabc | 1981 | |
a5302181 LG |
1982 | /** |
1983 | * snd_soc_dapm_disable_pin - disable pin. | |
1984 | * @codec: SoC codec | |
1985 | * @pin: pin name | |
1986 | * | |
74b8f955 | 1987 | * Disables input/output pin and its parents or children widgets. |
a5302181 LG |
1988 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to |
1989 | * do any widget power switching. | |
1990 | */ | |
1649923d | 1991 | int snd_soc_dapm_disable_pin(struct snd_soc_codec *codec, const char *pin) |
a5302181 LG |
1992 | { |
1993 | return snd_soc_dapm_set_pin(codec, pin, 0); | |
2b97eabc | 1994 | } |
a5302181 | 1995 | EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin); |
2b97eabc | 1996 | |
5817b52a MB |
1997 | /** |
1998 | * snd_soc_dapm_nc_pin - permanently disable pin. | |
1999 | * @codec: SoC codec | |
2000 | * @pin: pin name | |
2001 | * | |
2002 | * Marks the specified pin as being not connected, disabling it along | |
2003 | * any parent or child widgets. At present this is identical to | |
2004 | * snd_soc_dapm_disable_pin() but in future it will be extended to do | |
2005 | * additional things such as disabling controls which only affect | |
2006 | * paths through the pin. | |
2007 | * | |
2008 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2009 | * do any widget power switching. | |
2010 | */ | |
1649923d | 2011 | int snd_soc_dapm_nc_pin(struct snd_soc_codec *codec, const char *pin) |
5817b52a MB |
2012 | { |
2013 | return snd_soc_dapm_set_pin(codec, pin, 0); | |
2014 | } | |
2015 | EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin); | |
2016 | ||
eeec12bf | 2017 | /** |
a5302181 | 2018 | * snd_soc_dapm_get_pin_status - get audio pin status |
eeec12bf | 2019 | * @codec: audio codec |
a5302181 | 2020 | * @pin: audio signal pin endpoint (or start point) |
eeec12bf | 2021 | * |
a5302181 | 2022 | * Get audio pin status - connected or disconnected. |
eeec12bf | 2023 | * |
a5302181 | 2024 | * Returns 1 for connected otherwise 0. |
eeec12bf | 2025 | */ |
1649923d | 2026 | int snd_soc_dapm_get_pin_status(struct snd_soc_codec *codec, const char *pin) |
eeec12bf GG |
2027 | { |
2028 | struct snd_soc_dapm_widget *w; | |
2029 | ||
2030 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
a5302181 | 2031 | if (!strcmp(w->name, pin)) |
eeec12bf GG |
2032 | return w->connected; |
2033 | } | |
2034 | ||
2035 | return 0; | |
2036 | } | |
a5302181 | 2037 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status); |
eeec12bf | 2038 | |
2b97eabc RP |
2039 | /** |
2040 | * snd_soc_dapm_free - free dapm resources | |
2041 | * @socdev: SoC device | |
2042 | * | |
2043 | * Free all dapm widgets and resources. | |
2044 | */ | |
2045 | void snd_soc_dapm_free(struct snd_soc_device *socdev) | |
2046 | { | |
6627a653 | 2047 | struct snd_soc_codec *codec = socdev->card->codec; |
2b97eabc RP |
2048 | |
2049 | snd_soc_dapm_sys_remove(socdev->dev); | |
2050 | dapm_free_widgets(codec); | |
2051 | } | |
2052 | EXPORT_SYMBOL_GPL(snd_soc_dapm_free); | |
2053 | ||
51737470 MB |
2054 | /* |
2055 | * snd_soc_dapm_shutdown - callback for system shutdown | |
2056 | */ | |
2057 | void snd_soc_dapm_shutdown(struct snd_soc_device *socdev) | |
2058 | { | |
2059 | struct snd_soc_codec *codec = socdev->card->codec; | |
2060 | struct snd_soc_dapm_widget *w; | |
2061 | LIST_HEAD(down_list); | |
2062 | int powerdown = 0; | |
2063 | ||
2064 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
2065 | if (w->power) { | |
2066 | dapm_seq_insert(w, &down_list, dapm_down_seq); | |
c2caa4da | 2067 | w->power = 0; |
51737470 MB |
2068 | powerdown = 1; |
2069 | } | |
2070 | } | |
2071 | ||
2072 | /* If there were no widgets to power down we're already in | |
2073 | * standby. | |
2074 | */ | |
2075 | if (powerdown) { | |
2076 | snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_PREPARE); | |
2077 | dapm_seq_run(codec, &down_list, 0, dapm_down_seq); | |
2078 | snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_STANDBY); | |
2079 | } | |
2080 | ||
2081 | snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_OFF); | |
2082 | } | |
2083 | ||
2b97eabc | 2084 | /* Module information */ |
d331124d | 2085 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
2b97eabc RP |
2086 | MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC"); |
2087 | MODULE_LICENSE("GPL"); |