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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 | |
15 | * DAC's/ADC's. | |
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[] = { | |
55 | snd_soc_dapm_pre, snd_soc_dapm_micbias, snd_soc_dapm_mic, | |
2e72f8e3 | 56 | snd_soc_dapm_mux, snd_soc_dapm_value_mux, snd_soc_dapm_dac, |
ca9c1aae IM |
57 | snd_soc_dapm_mixer, snd_soc_dapm_mixer_named_ctl, snd_soc_dapm_pga, |
58 | snd_soc_dapm_adc, snd_soc_dapm_hp, snd_soc_dapm_spk, snd_soc_dapm_post | |
2b97eabc | 59 | }; |
ca9c1aae | 60 | |
2b97eabc RP |
61 | static int dapm_down_seq[] = { |
62 | snd_soc_dapm_pre, snd_soc_dapm_adc, snd_soc_dapm_hp, snd_soc_dapm_spk, | |
ca9c1aae IM |
63 | snd_soc_dapm_pga, snd_soc_dapm_mixer_named_ctl, snd_soc_dapm_mixer, |
64 | snd_soc_dapm_dac, snd_soc_dapm_mic, snd_soc_dapm_micbias, | |
65 | snd_soc_dapm_mux, snd_soc_dapm_value_mux, snd_soc_dapm_post | |
2b97eabc RP |
66 | }; |
67 | ||
68 | static int dapm_status = 1; | |
69 | module_param(dapm_status, int, 0); | |
70 | MODULE_PARM_DESC(dapm_status, "enable DPM sysfs entries"); | |
71 | ||
12ef193d | 72 | static void pop_wait(u32 pop_time) |
15e4c72f MB |
73 | { |
74 | if (pop_time) | |
75 | schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time)); | |
76 | } | |
77 | ||
12ef193d | 78 | static void pop_dbg(u32 pop_time, const char *fmt, ...) |
15e4c72f MB |
79 | { |
80 | va_list args; | |
81 | ||
82 | va_start(args, fmt); | |
83 | ||
84 | if (pop_time) { | |
85 | vprintk(fmt, args); | |
12ef193d | 86 | pop_wait(pop_time); |
15e4c72f MB |
87 | } |
88 | ||
89 | va_end(args); | |
90 | } | |
91 | ||
2b97eabc | 92 | /* create a new dapm widget */ |
88cb4290 | 93 | static inline struct snd_soc_dapm_widget *dapm_cnew_widget( |
2b97eabc RP |
94 | const struct snd_soc_dapm_widget *_widget) |
95 | { | |
88cb4290 | 96 | return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL); |
2b97eabc RP |
97 | } |
98 | ||
99 | /* set up initial codec paths */ | |
100 | static void dapm_set_path_status(struct snd_soc_dapm_widget *w, | |
101 | struct snd_soc_dapm_path *p, int i) | |
102 | { | |
103 | switch (w->id) { | |
104 | case snd_soc_dapm_switch: | |
ca9c1aae IM |
105 | case snd_soc_dapm_mixer: |
106 | case snd_soc_dapm_mixer_named_ctl: { | |
2b97eabc | 107 | int val; |
4eaa9819 JS |
108 | struct soc_mixer_control *mc = (struct soc_mixer_control *) |
109 | w->kcontrols[i].private_value; | |
815ecf8d JS |
110 | unsigned int reg = mc->reg; |
111 | unsigned int shift = mc->shift; | |
4eaa9819 | 112 | int max = mc->max; |
815ecf8d JS |
113 | unsigned int mask = (1 << fls(max)) - 1; |
114 | unsigned int invert = mc->invert; | |
2b97eabc RP |
115 | |
116 | val = snd_soc_read(w->codec, reg); | |
117 | val = (val >> shift) & mask; | |
118 | ||
119 | if ((invert && !val) || (!invert && val)) | |
120 | p->connect = 1; | |
121 | else | |
122 | p->connect = 0; | |
123 | } | |
124 | break; | |
125 | case snd_soc_dapm_mux: { | |
126 | struct soc_enum *e = (struct soc_enum *)w->kcontrols[i].private_value; | |
127 | int val, item, bitmask; | |
128 | ||
f8ba0b7b | 129 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
130 | ; |
131 | val = snd_soc_read(w->codec, e->reg); | |
132 | item = (val >> e->shift_l) & (bitmask - 1); | |
133 | ||
134 | p->connect = 0; | |
f8ba0b7b | 135 | for (i = 0; i < e->max; i++) { |
2b97eabc RP |
136 | if (!(strcmp(p->name, e->texts[i])) && item == i) |
137 | p->connect = 1; | |
138 | } | |
139 | } | |
140 | break; | |
2e72f8e3 | 141 | case snd_soc_dapm_value_mux: { |
74155556 | 142 | struct soc_enum *e = (struct soc_enum *) |
2e72f8e3 PU |
143 | w->kcontrols[i].private_value; |
144 | int val, item; | |
145 | ||
146 | val = snd_soc_read(w->codec, e->reg); | |
147 | val = (val >> e->shift_l) & e->mask; | |
148 | for (item = 0; item < e->max; item++) { | |
149 | if (val == e->values[item]) | |
150 | break; | |
151 | } | |
152 | ||
153 | p->connect = 0; | |
154 | for (i = 0; i < e->max; i++) { | |
155 | if (!(strcmp(p->name, e->texts[i])) && item == i) | |
156 | p->connect = 1; | |
157 | } | |
158 | } | |
159 | break; | |
2b97eabc RP |
160 | /* does not effect routing - always connected */ |
161 | case snd_soc_dapm_pga: | |
162 | case snd_soc_dapm_output: | |
163 | case snd_soc_dapm_adc: | |
164 | case snd_soc_dapm_input: | |
165 | case snd_soc_dapm_dac: | |
166 | case snd_soc_dapm_micbias: | |
167 | case snd_soc_dapm_vmid: | |
168 | p->connect = 1; | |
169 | break; | |
170 | /* does effect routing - dynamically connected */ | |
171 | case snd_soc_dapm_hp: | |
172 | case snd_soc_dapm_mic: | |
173 | case snd_soc_dapm_spk: | |
174 | case snd_soc_dapm_line: | |
175 | case snd_soc_dapm_pre: | |
176 | case snd_soc_dapm_post: | |
177 | p->connect = 0; | |
178 | break; | |
179 | } | |
180 | } | |
181 | ||
182 | /* connect mux widget to it's interconnecting audio paths */ | |
183 | static int dapm_connect_mux(struct snd_soc_codec *codec, | |
184 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, | |
185 | struct snd_soc_dapm_path *path, const char *control_name, | |
186 | const struct snd_kcontrol_new *kcontrol) | |
187 | { | |
188 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
189 | int i; | |
190 | ||
f8ba0b7b | 191 | for (i = 0; i < e->max; i++) { |
2b97eabc RP |
192 | if (!(strcmp(control_name, e->texts[i]))) { |
193 | list_add(&path->list, &codec->dapm_paths); | |
194 | list_add(&path->list_sink, &dest->sources); | |
195 | list_add(&path->list_source, &src->sinks); | |
196 | path->name = (char*)e->texts[i]; | |
197 | dapm_set_path_status(dest, path, 0); | |
198 | return 0; | |
199 | } | |
200 | } | |
201 | ||
202 | return -ENODEV; | |
203 | } | |
204 | ||
205 | /* connect mixer widget to it's interconnecting audio paths */ | |
206 | static int dapm_connect_mixer(struct snd_soc_codec *codec, | |
207 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, | |
208 | struct snd_soc_dapm_path *path, const char *control_name) | |
209 | { | |
210 | int i; | |
211 | ||
212 | /* search for mixer kcontrol */ | |
213 | for (i = 0; i < dest->num_kcontrols; i++) { | |
214 | if (!strcmp(control_name, dest->kcontrols[i].name)) { | |
215 | list_add(&path->list, &codec->dapm_paths); | |
216 | list_add(&path->list_sink, &dest->sources); | |
217 | list_add(&path->list_source, &src->sinks); | |
218 | path->name = dest->kcontrols[i].name; | |
219 | dapm_set_path_status(dest, path, i); | |
220 | return 0; | |
221 | } | |
222 | } | |
223 | return -ENODEV; | |
224 | } | |
225 | ||
226 | /* update dapm codec register bits */ | |
227 | static int dapm_update_bits(struct snd_soc_dapm_widget *widget) | |
228 | { | |
229 | int change, power; | |
230 | unsigned short old, new; | |
231 | struct snd_soc_codec *codec = widget->codec; | |
232 | ||
233 | /* check for valid widgets */ | |
234 | if (widget->reg < 0 || widget->id == snd_soc_dapm_input || | |
235 | widget->id == snd_soc_dapm_output || | |
236 | widget->id == snd_soc_dapm_hp || | |
237 | widget->id == snd_soc_dapm_mic || | |
238 | widget->id == snd_soc_dapm_line || | |
239 | widget->id == snd_soc_dapm_spk) | |
240 | return 0; | |
241 | ||
242 | power = widget->power; | |
243 | if (widget->invert) | |
244 | power = (power ? 0:1); | |
245 | ||
246 | old = snd_soc_read(codec, widget->reg); | |
247 | new = (old & ~(0x1 << widget->shift)) | (power << widget->shift); | |
248 | ||
249 | change = old != new; | |
250 | if (change) { | |
12ef193d TK |
251 | pop_dbg(codec->pop_time, "pop test %s : %s in %d ms\n", |
252 | widget->name, widget->power ? "on" : "off", | |
253 | codec->pop_time); | |
2b97eabc | 254 | snd_soc_write(codec, widget->reg, new); |
12ef193d | 255 | pop_wait(codec->pop_time); |
2b97eabc | 256 | } |
c1286b86 MB |
257 | pr_debug("reg %x old %x new %x change %d\n", widget->reg, |
258 | old, new, change); | |
2b97eabc RP |
259 | return change; |
260 | } | |
261 | ||
262 | /* ramps the volume up or down to minimise pops before or after a | |
263 | * DAPM power event */ | |
264 | static int dapm_set_pga(struct snd_soc_dapm_widget *widget, int power) | |
265 | { | |
266 | const struct snd_kcontrol_new *k = widget->kcontrols; | |
267 | ||
268 | if (widget->muted && !power) | |
269 | return 0; | |
270 | if (!widget->muted && power) | |
271 | return 0; | |
272 | ||
273 | if (widget->num_kcontrols && k) { | |
4eaa9819 JS |
274 | struct soc_mixer_control *mc = |
275 | (struct soc_mixer_control *)k->private_value; | |
815ecf8d JS |
276 | unsigned int reg = mc->reg; |
277 | unsigned int shift = mc->shift; | |
4eaa9819 | 278 | int max = mc->max; |
815ecf8d JS |
279 | unsigned int mask = (1 << fls(max)) - 1; |
280 | unsigned int invert = mc->invert; | |
2b97eabc RP |
281 | |
282 | if (power) { | |
283 | int i; | |
284 | /* power up has happended, increase volume to last level */ | |
285 | if (invert) { | |
4eaa9819 | 286 | for (i = max; i > widget->saved_value; i--) |
2b97eabc RP |
287 | snd_soc_update_bits(widget->codec, reg, mask, i); |
288 | } else { | |
289 | for (i = 0; i < widget->saved_value; i++) | |
290 | snd_soc_update_bits(widget->codec, reg, mask, i); | |
291 | } | |
292 | widget->muted = 0; | |
293 | } else { | |
294 | /* power down is about to occur, decrease volume to mute */ | |
295 | int val = snd_soc_read(widget->codec, reg); | |
296 | int i = widget->saved_value = (val >> shift) & mask; | |
297 | if (invert) { | |
298 | for (; i < mask; i++) | |
299 | snd_soc_update_bits(widget->codec, reg, mask, i); | |
300 | } else { | |
301 | for (; i > 0; i--) | |
302 | snd_soc_update_bits(widget->codec, reg, mask, i); | |
303 | } | |
304 | widget->muted = 1; | |
305 | } | |
306 | } | |
307 | return 0; | |
308 | } | |
309 | ||
310 | /* create new dapm mixer control */ | |
311 | static int dapm_new_mixer(struct snd_soc_codec *codec, | |
312 | struct snd_soc_dapm_widget *w) | |
313 | { | |
314 | int i, ret = 0; | |
219b93f5 | 315 | size_t name_len; |
2b97eabc RP |
316 | struct snd_soc_dapm_path *path; |
317 | ||
318 | /* add kcontrol */ | |
319 | for (i = 0; i < w->num_kcontrols; i++) { | |
320 | ||
321 | /* match name */ | |
322 | list_for_each_entry(path, &w->sources, list_sink) { | |
323 | ||
324 | /* mixer/mux paths name must match control name */ | |
325 | if (path->name != (char*)w->kcontrols[i].name) | |
326 | continue; | |
327 | ||
ca9c1aae IM |
328 | /* add dapm control with long name. |
329 | * for dapm_mixer this is the concatenation of the | |
330 | * mixer and kcontrol name. | |
331 | * for dapm_mixer_named_ctl this is simply the | |
332 | * kcontrol name. | |
333 | */ | |
334 | name_len = strlen(w->kcontrols[i].name) + 1; | |
335 | if (w->id == snd_soc_dapm_mixer) | |
336 | name_len += 1 + strlen(w->name); | |
337 | ||
219b93f5 | 338 | path->long_name = kmalloc(name_len, GFP_KERNEL); |
ca9c1aae | 339 | |
2b97eabc RP |
340 | if (path->long_name == NULL) |
341 | return -ENOMEM; | |
342 | ||
ca9c1aae IM |
343 | switch (w->id) { |
344 | case snd_soc_dapm_mixer: | |
345 | default: | |
346 | snprintf(path->long_name, name_len, "%s %s", | |
347 | w->name, w->kcontrols[i].name); | |
348 | break; | |
349 | case snd_soc_dapm_mixer_named_ctl: | |
350 | snprintf(path->long_name, name_len, "%s", | |
351 | w->kcontrols[i].name); | |
352 | break; | |
353 | } | |
354 | ||
219b93f5 MB |
355 | path->long_name[name_len - 1] = '\0'; |
356 | ||
2b97eabc RP |
357 | path->kcontrol = snd_soc_cnew(&w->kcontrols[i], w, |
358 | path->long_name); | |
359 | ret = snd_ctl_add(codec->card, path->kcontrol); | |
360 | if (ret < 0) { | |
361 | printk(KERN_ERR "asoc: failed to add dapm kcontrol %s\n", | |
362 | path->long_name); | |
363 | kfree(path->long_name); | |
364 | path->long_name = NULL; | |
365 | return ret; | |
366 | } | |
367 | } | |
368 | } | |
369 | return ret; | |
370 | } | |
371 | ||
372 | /* create new dapm mux control */ | |
373 | static int dapm_new_mux(struct snd_soc_codec *codec, | |
374 | struct snd_soc_dapm_widget *w) | |
375 | { | |
376 | struct snd_soc_dapm_path *path = NULL; | |
377 | struct snd_kcontrol *kcontrol; | |
378 | int ret = 0; | |
379 | ||
380 | if (!w->num_kcontrols) { | |
381 | printk(KERN_ERR "asoc: mux %s has no controls\n", w->name); | |
382 | return -EINVAL; | |
383 | } | |
384 | ||
385 | kcontrol = snd_soc_cnew(&w->kcontrols[0], w, w->name); | |
386 | ret = snd_ctl_add(codec->card, kcontrol); | |
387 | if (ret < 0) | |
388 | goto err; | |
389 | ||
390 | list_for_each_entry(path, &w->sources, list_sink) | |
391 | path->kcontrol = kcontrol; | |
392 | ||
393 | return ret; | |
394 | ||
395 | err: | |
396 | printk(KERN_ERR "asoc: failed to add kcontrol %s\n", w->name); | |
397 | return ret; | |
398 | } | |
399 | ||
400 | /* create new dapm volume control */ | |
401 | static int dapm_new_pga(struct snd_soc_codec *codec, | |
402 | struct snd_soc_dapm_widget *w) | |
403 | { | |
404 | struct snd_kcontrol *kcontrol; | |
405 | int ret = 0; | |
406 | ||
407 | if (!w->num_kcontrols) | |
408 | return -EINVAL; | |
409 | ||
410 | kcontrol = snd_soc_cnew(&w->kcontrols[0], w, w->name); | |
411 | ret = snd_ctl_add(codec->card, kcontrol); | |
412 | if (ret < 0) { | |
413 | printk(KERN_ERR "asoc: failed to add kcontrol %s\n", w->name); | |
414 | return ret; | |
415 | } | |
416 | ||
417 | return ret; | |
418 | } | |
419 | ||
420 | /* reset 'walked' bit for each dapm path */ | |
421 | static inline void dapm_clear_walk(struct snd_soc_codec *codec) | |
422 | { | |
423 | struct snd_soc_dapm_path *p; | |
424 | ||
425 | list_for_each_entry(p, &codec->dapm_paths, list) | |
426 | p->walked = 0; | |
427 | } | |
428 | ||
429 | /* | |
430 | * Recursively check for a completed path to an active or physically connected | |
431 | * output widget. Returns number of complete paths. | |
432 | */ | |
433 | static int is_connected_output_ep(struct snd_soc_dapm_widget *widget) | |
434 | { | |
435 | struct snd_soc_dapm_path *path; | |
436 | int con = 0; | |
437 | ||
438 | if (widget->id == snd_soc_dapm_adc && widget->active) | |
439 | return 1; | |
440 | ||
441 | if (widget->connected) { | |
442 | /* connected pin ? */ | |
443 | if (widget->id == snd_soc_dapm_output && !widget->ext) | |
444 | return 1; | |
445 | ||
446 | /* connected jack or spk ? */ | |
447 | if (widget->id == snd_soc_dapm_hp || widget->id == snd_soc_dapm_spk || | |
448 | widget->id == snd_soc_dapm_line) | |
449 | return 1; | |
450 | } | |
451 | ||
452 | list_for_each_entry(path, &widget->sinks, list_source) { | |
453 | if (path->walked) | |
454 | continue; | |
455 | ||
456 | if (path->sink && path->connect) { | |
457 | path->walked = 1; | |
458 | con += is_connected_output_ep(path->sink); | |
459 | } | |
460 | } | |
461 | ||
462 | return con; | |
463 | } | |
464 | ||
465 | /* | |
466 | * Recursively check for a completed path to an active or physically connected | |
467 | * input widget. Returns number of complete paths. | |
468 | */ | |
469 | static int is_connected_input_ep(struct snd_soc_dapm_widget *widget) | |
470 | { | |
471 | struct snd_soc_dapm_path *path; | |
472 | int con = 0; | |
473 | ||
474 | /* active stream ? */ | |
475 | if (widget->id == snd_soc_dapm_dac && widget->active) | |
476 | return 1; | |
477 | ||
478 | if (widget->connected) { | |
479 | /* connected pin ? */ | |
480 | if (widget->id == snd_soc_dapm_input && !widget->ext) | |
481 | return 1; | |
482 | ||
483 | /* connected VMID/Bias for lower pops */ | |
484 | if (widget->id == snd_soc_dapm_vmid) | |
485 | return 1; | |
486 | ||
487 | /* connected jack ? */ | |
488 | if (widget->id == snd_soc_dapm_mic || widget->id == snd_soc_dapm_line) | |
489 | return 1; | |
490 | } | |
491 | ||
492 | list_for_each_entry(path, &widget->sources, list_sink) { | |
493 | if (path->walked) | |
494 | continue; | |
495 | ||
496 | if (path->source && path->connect) { | |
497 | path->walked = 1; | |
498 | con += is_connected_input_ep(path->source); | |
499 | } | |
500 | } | |
501 | ||
502 | return con; | |
503 | } | |
504 | ||
e2be2ccf JN |
505 | /* |
506 | * Handler for generic register modifier widget. | |
507 | */ | |
508 | int dapm_reg_event(struct snd_soc_dapm_widget *w, | |
509 | struct snd_kcontrol *kcontrol, int event) | |
510 | { | |
511 | unsigned int val; | |
512 | ||
513 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
514 | val = w->on_val; | |
515 | else | |
516 | val = w->off_val; | |
517 | ||
518 | snd_soc_update_bits(w->codec, -(w->reg + 1), | |
519 | w->mask << w->shift, val << w->shift); | |
520 | ||
521 | return 0; | |
522 | } | |
11589418 | 523 | EXPORT_SYMBOL_GPL(dapm_reg_event); |
e2be2ccf | 524 | |
2b97eabc RP |
525 | /* |
526 | * Scan each dapm widget for complete audio path. | |
527 | * A complete path is a route that has valid endpoints i.e.:- | |
528 | * | |
529 | * o DAC to output pin. | |
530 | * o Input Pin to ADC. | |
531 | * o Input pin to Output pin (bypass, sidetone) | |
532 | * o DAC to ADC (loopback). | |
533 | */ | |
d9c96cf3 | 534 | static int dapm_power_widgets(struct snd_soc_codec *codec, int event) |
2b97eabc RP |
535 | { |
536 | struct snd_soc_dapm_widget *w; | |
537 | int in, out, i, c = 1, *seq = NULL, ret = 0, power_change, power; | |
538 | ||
539 | /* do we have a sequenced stream event */ | |
540 | if (event == SND_SOC_DAPM_STREAM_START) { | |
541 | c = ARRAY_SIZE(dapm_up_seq); | |
542 | seq = dapm_up_seq; | |
543 | } else if (event == SND_SOC_DAPM_STREAM_STOP) { | |
544 | c = ARRAY_SIZE(dapm_down_seq); | |
545 | seq = dapm_down_seq; | |
546 | } | |
547 | ||
548 | for(i = 0; i < c; i++) { | |
549 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
550 | ||
551 | /* is widget in stream order */ | |
552 | if (seq && seq[i] && w->id != seq[i]) | |
553 | continue; | |
554 | ||
555 | /* vmid - no action */ | |
556 | if (w->id == snd_soc_dapm_vmid) | |
557 | continue; | |
558 | ||
559 | /* active ADC */ | |
560 | if (w->id == snd_soc_dapm_adc && w->active) { | |
561 | in = is_connected_input_ep(w); | |
562 | dapm_clear_walk(w->codec); | |
563 | w->power = (in != 0) ? 1 : 0; | |
564 | dapm_update_bits(w); | |
565 | continue; | |
566 | } | |
567 | ||
568 | /* active DAC */ | |
569 | if (w->id == snd_soc_dapm_dac && w->active) { | |
570 | out = is_connected_output_ep(w); | |
571 | dapm_clear_walk(w->codec); | |
572 | w->power = (out != 0) ? 1 : 0; | |
573 | dapm_update_bits(w); | |
574 | continue; | |
575 | } | |
576 | ||
2b97eabc RP |
577 | /* pre and post event widgets */ |
578 | if (w->id == snd_soc_dapm_pre) { | |
579 | if (!w->event) | |
580 | continue; | |
581 | ||
582 | if (event == SND_SOC_DAPM_STREAM_START) { | |
9af6d956 LG |
583 | ret = w->event(w, |
584 | NULL, SND_SOC_DAPM_PRE_PMU); | |
2b97eabc RP |
585 | if (ret < 0) |
586 | return ret; | |
587 | } else if (event == SND_SOC_DAPM_STREAM_STOP) { | |
9af6d956 LG |
588 | ret = w->event(w, |
589 | NULL, SND_SOC_DAPM_PRE_PMD); | |
2b97eabc RP |
590 | if (ret < 0) |
591 | return ret; | |
592 | } | |
593 | continue; | |
594 | } | |
595 | if (w->id == snd_soc_dapm_post) { | |
596 | if (!w->event) | |
597 | continue; | |
598 | ||
599 | if (event == SND_SOC_DAPM_STREAM_START) { | |
9af6d956 LG |
600 | ret = w->event(w, |
601 | NULL, SND_SOC_DAPM_POST_PMU); | |
2b97eabc RP |
602 | if (ret < 0) |
603 | return ret; | |
604 | } else if (event == SND_SOC_DAPM_STREAM_STOP) { | |
9af6d956 LG |
605 | ret = w->event(w, |
606 | NULL, SND_SOC_DAPM_POST_PMD); | |
2b97eabc RP |
607 | if (ret < 0) |
608 | return ret; | |
609 | } | |
610 | continue; | |
611 | } | |
612 | ||
613 | /* all other widgets */ | |
614 | in = is_connected_input_ep(w); | |
615 | dapm_clear_walk(w->codec); | |
616 | out = is_connected_output_ep(w); | |
617 | dapm_clear_walk(w->codec); | |
618 | power = (out != 0 && in != 0) ? 1 : 0; | |
619 | power_change = (w->power == power) ? 0: 1; | |
620 | w->power = power; | |
621 | ||
2927d6ee MB |
622 | if (!power_change) |
623 | continue; | |
624 | ||
2b97eabc | 625 | /* call any power change event handlers */ |
2927d6ee MB |
626 | if (w->event) |
627 | pr_debug("power %s event for %s flags %x\n", | |
628 | w->power ? "on" : "off", | |
629 | w->name, w->event_flags); | |
630 | ||
631 | /* power up pre event */ | |
632 | if (power && w->event && | |
633 | (w->event_flags & SND_SOC_DAPM_PRE_PMU)) { | |
634 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMU); | |
635 | if (ret < 0) | |
636 | return ret; | |
637 | } | |
638 | ||
639 | /* power down pre event */ | |
640 | if (!power && w->event && | |
641 | (w->event_flags & SND_SOC_DAPM_PRE_PMD)) { | |
642 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMD); | |
643 | if (ret < 0) | |
644 | return ret; | |
645 | } | |
646 | ||
9dd8d812 MB |
647 | /* Lower PGA volume to reduce pops */ |
648 | if (w->id == snd_soc_dapm_pga && !power) | |
649 | dapm_set_pga(w, power); | |
650 | ||
2927d6ee MB |
651 | dapm_update_bits(w); |
652 | ||
9dd8d812 MB |
653 | /* Raise PGA volume to reduce pops */ |
654 | if (w->id == snd_soc_dapm_pga && power) | |
655 | dapm_set_pga(w, power); | |
656 | ||
2927d6ee MB |
657 | /* power up post event */ |
658 | if (power && w->event && | |
659 | (w->event_flags & SND_SOC_DAPM_POST_PMU)) { | |
660 | ret = w->event(w, | |
661 | NULL, SND_SOC_DAPM_POST_PMU); | |
662 | if (ret < 0) | |
663 | return ret; | |
664 | } | |
665 | ||
666 | /* power down post event */ | |
667 | if (!power && w->event && | |
668 | (w->event_flags & SND_SOC_DAPM_POST_PMD)) { | |
669 | ret = w->event(w, NULL, SND_SOC_DAPM_POST_PMD); | |
670 | if (ret < 0) | |
671 | return ret; | |
2b97eabc RP |
672 | } |
673 | } | |
674 | } | |
675 | ||
676 | return ret; | |
677 | } | |
678 | ||
c1286b86 | 679 | #ifdef DEBUG |
2b97eabc RP |
680 | static void dbg_dump_dapm(struct snd_soc_codec* codec, const char *action) |
681 | { | |
682 | struct snd_soc_dapm_widget *w; | |
683 | struct snd_soc_dapm_path *p = NULL; | |
684 | int in, out; | |
685 | ||
686 | printk("DAPM %s %s\n", codec->name, action); | |
687 | ||
688 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
689 | ||
690 | /* only display widgets that effect routing */ | |
691 | switch (w->id) { | |
692 | case snd_soc_dapm_pre: | |
693 | case snd_soc_dapm_post: | |
694 | case snd_soc_dapm_vmid: | |
695 | continue; | |
696 | case snd_soc_dapm_mux: | |
2e72f8e3 | 697 | case snd_soc_dapm_value_mux: |
2b97eabc RP |
698 | case snd_soc_dapm_output: |
699 | case snd_soc_dapm_input: | |
700 | case snd_soc_dapm_switch: | |
701 | case snd_soc_dapm_hp: | |
702 | case snd_soc_dapm_mic: | |
703 | case snd_soc_dapm_spk: | |
704 | case snd_soc_dapm_line: | |
705 | case snd_soc_dapm_micbias: | |
706 | case snd_soc_dapm_dac: | |
707 | case snd_soc_dapm_adc: | |
708 | case snd_soc_dapm_pga: | |
709 | case snd_soc_dapm_mixer: | |
ca9c1aae | 710 | case snd_soc_dapm_mixer_named_ctl: |
2b97eabc RP |
711 | if (w->name) { |
712 | in = is_connected_input_ep(w); | |
713 | dapm_clear_walk(w->codec); | |
714 | out = is_connected_output_ep(w); | |
715 | dapm_clear_walk(w->codec); | |
716 | printk("%s: %s in %d out %d\n", w->name, | |
717 | w->power ? "On":"Off",in, out); | |
718 | ||
719 | list_for_each_entry(p, &w->sources, list_sink) { | |
720 | if (p->connect) | |
721 | printk(" in %s %s\n", p->name ? p->name : "static", | |
722 | p->source->name); | |
723 | } | |
724 | list_for_each_entry(p, &w->sinks, list_source) { | |
2b97eabc RP |
725 | if (p->connect) |
726 | printk(" out %s %s\n", p->name ? p->name : "static", | |
727 | p->sink->name); | |
728 | } | |
729 | } | |
730 | break; | |
731 | } | |
732 | } | |
733 | } | |
734 | #endif | |
735 | ||
736 | /* test and update the power status of a mux widget */ | |
d9c96cf3 AB |
737 | static int dapm_mux_update_power(struct snd_soc_dapm_widget *widget, |
738 | struct snd_kcontrol *kcontrol, int mask, | |
cb01e2b9 | 739 | int mux, int val, struct soc_enum *e) |
2b97eabc RP |
740 | { |
741 | struct snd_soc_dapm_path *path; | |
742 | int found = 0; | |
743 | ||
eff317d0 PU |
744 | if (widget->id != snd_soc_dapm_mux && |
745 | widget->id != snd_soc_dapm_value_mux) | |
2b97eabc RP |
746 | return -ENODEV; |
747 | ||
748 | if (!snd_soc_test_bits(widget->codec, e->reg, mask, val)) | |
749 | return 0; | |
750 | ||
751 | /* find dapm widget path assoc with kcontrol */ | |
752 | list_for_each_entry(path, &widget->codec->dapm_paths, list) { | |
753 | if (path->kcontrol != kcontrol) | |
754 | continue; | |
755 | ||
cb01e2b9 | 756 | if (!path->name || !e->texts[mux]) |
2b97eabc RP |
757 | continue; |
758 | ||
759 | found = 1; | |
760 | /* we now need to match the string in the enum to the path */ | |
cb01e2b9 | 761 | if (!(strcmp(path->name, e->texts[mux]))) |
2b97eabc RP |
762 | path->connect = 1; /* new connection */ |
763 | else | |
764 | path->connect = 0; /* old connection must be powered down */ | |
765 | } | |
766 | ||
3fccd8b1 | 767 | if (found) { |
2b97eabc | 768 | dapm_power_widgets(widget->codec, SND_SOC_DAPM_STREAM_NOP); |
3fccd8b1 MB |
769 | dump_dapm(widget->codec, "mux power update"); |
770 | } | |
2b97eabc RP |
771 | |
772 | return 0; | |
773 | } | |
2b97eabc | 774 | |
1b075e3f | 775 | /* test and update the power status of a mixer or switch widget */ |
d9c96cf3 AB |
776 | static int dapm_mixer_update_power(struct snd_soc_dapm_widget *widget, |
777 | struct snd_kcontrol *kcontrol, int reg, | |
778 | int val_mask, int val, int invert) | |
2b97eabc RP |
779 | { |
780 | struct snd_soc_dapm_path *path; | |
781 | int found = 0; | |
782 | ||
1b075e3f | 783 | if (widget->id != snd_soc_dapm_mixer && |
ca9c1aae | 784 | widget->id != snd_soc_dapm_mixer_named_ctl && |
1b075e3f | 785 | widget->id != snd_soc_dapm_switch) |
2b97eabc RP |
786 | return -ENODEV; |
787 | ||
788 | if (!snd_soc_test_bits(widget->codec, reg, val_mask, val)) | |
789 | return 0; | |
790 | ||
791 | /* find dapm widget path assoc with kcontrol */ | |
792 | list_for_each_entry(path, &widget->codec->dapm_paths, list) { | |
793 | if (path->kcontrol != kcontrol) | |
794 | continue; | |
795 | ||
796 | /* found, now check type */ | |
797 | found = 1; | |
798 | if (val) | |
799 | /* new connection */ | |
800 | path->connect = invert ? 0:1; | |
801 | else | |
802 | /* old connection must be powered down */ | |
803 | path->connect = invert ? 1:0; | |
804 | break; | |
805 | } | |
806 | ||
3fccd8b1 | 807 | if (found) { |
2b97eabc | 808 | dapm_power_widgets(widget->codec, SND_SOC_DAPM_STREAM_NOP); |
3fccd8b1 MB |
809 | dump_dapm(widget->codec, "mixer power update"); |
810 | } | |
2b97eabc RP |
811 | |
812 | return 0; | |
813 | } | |
2b97eabc RP |
814 | |
815 | /* show dapm widget status in sys fs */ | |
816 | static ssize_t dapm_widget_show(struct device *dev, | |
817 | struct device_attribute *attr, char *buf) | |
818 | { | |
819 | struct snd_soc_device *devdata = dev_get_drvdata(dev); | |
6627a653 | 820 | struct snd_soc_codec *codec = devdata->card->codec; |
2b97eabc RP |
821 | struct snd_soc_dapm_widget *w; |
822 | int count = 0; | |
823 | char *state = "not set"; | |
824 | ||
825 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
826 | ||
827 | /* only display widgets that burnm power */ | |
828 | switch (w->id) { | |
829 | case snd_soc_dapm_hp: | |
830 | case snd_soc_dapm_mic: | |
831 | case snd_soc_dapm_spk: | |
832 | case snd_soc_dapm_line: | |
833 | case snd_soc_dapm_micbias: | |
834 | case snd_soc_dapm_dac: | |
835 | case snd_soc_dapm_adc: | |
836 | case snd_soc_dapm_pga: | |
837 | case snd_soc_dapm_mixer: | |
ca9c1aae | 838 | case snd_soc_dapm_mixer_named_ctl: |
2b97eabc RP |
839 | if (w->name) |
840 | count += sprintf(buf + count, "%s: %s\n", | |
841 | w->name, w->power ? "On":"Off"); | |
842 | break; | |
843 | default: | |
844 | break; | |
845 | } | |
846 | } | |
847 | ||
0be9898a MB |
848 | switch (codec->bias_level) { |
849 | case SND_SOC_BIAS_ON: | |
850 | state = "On"; | |
2b97eabc | 851 | break; |
0be9898a MB |
852 | case SND_SOC_BIAS_PREPARE: |
853 | state = "Prepare"; | |
2b97eabc | 854 | break; |
0be9898a MB |
855 | case SND_SOC_BIAS_STANDBY: |
856 | state = "Standby"; | |
2b97eabc | 857 | break; |
0be9898a MB |
858 | case SND_SOC_BIAS_OFF: |
859 | state = "Off"; | |
2b97eabc RP |
860 | break; |
861 | } | |
862 | count += sprintf(buf + count, "PM State: %s\n", state); | |
863 | ||
864 | return count; | |
865 | } | |
866 | ||
867 | static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL); | |
868 | ||
869 | int snd_soc_dapm_sys_add(struct device *dev) | |
870 | { | |
f0062a92 MB |
871 | if (!dapm_status) |
872 | return 0; | |
12ef193d | 873 | return device_create_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
874 | } |
875 | ||
876 | static void snd_soc_dapm_sys_remove(struct device *dev) | |
877 | { | |
15e4c72f | 878 | if (dapm_status) { |
2b97eabc | 879 | device_remove_file(dev, &dev_attr_dapm_widget); |
15e4c72f | 880 | } |
2b97eabc RP |
881 | } |
882 | ||
883 | /* free all dapm widgets and resources */ | |
d9c96cf3 | 884 | static void dapm_free_widgets(struct snd_soc_codec *codec) |
2b97eabc RP |
885 | { |
886 | struct snd_soc_dapm_widget *w, *next_w; | |
887 | struct snd_soc_dapm_path *p, *next_p; | |
888 | ||
889 | list_for_each_entry_safe(w, next_w, &codec->dapm_widgets, list) { | |
890 | list_del(&w->list); | |
891 | kfree(w); | |
892 | } | |
893 | ||
894 | list_for_each_entry_safe(p, next_p, &codec->dapm_paths, list) { | |
895 | list_del(&p->list); | |
896 | kfree(p->long_name); | |
897 | kfree(p); | |
898 | } | |
899 | } | |
900 | ||
a5302181 | 901 | static int snd_soc_dapm_set_pin(struct snd_soc_codec *codec, |
1649923d | 902 | const char *pin, int status) |
a5302181 LG |
903 | { |
904 | struct snd_soc_dapm_widget *w; | |
905 | ||
906 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
907 | if (!strcmp(w->name, pin)) { | |
c1286b86 | 908 | pr_debug("dapm: %s: pin %s\n", codec->name, pin); |
a5302181 LG |
909 | w->connected = status; |
910 | return 0; | |
911 | } | |
912 | } | |
913 | ||
c1286b86 | 914 | pr_err("dapm: %s: configuring unknown pin %s\n", codec->name, pin); |
a5302181 LG |
915 | return -EINVAL; |
916 | } | |
917 | ||
2b97eabc | 918 | /** |
a5302181 | 919 | * snd_soc_dapm_sync - scan and power dapm paths |
2b97eabc RP |
920 | * @codec: audio codec |
921 | * | |
922 | * Walks all dapm audio paths and powers widgets according to their | |
923 | * stream or path usage. | |
924 | * | |
925 | * Returns 0 for success. | |
926 | */ | |
a5302181 | 927 | int snd_soc_dapm_sync(struct snd_soc_codec *codec) |
2b97eabc | 928 | { |
3fccd8b1 MB |
929 | int ret = dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP); |
930 | dump_dapm(codec, "sync"); | |
931 | return ret; | |
2b97eabc | 932 | } |
a5302181 | 933 | EXPORT_SYMBOL_GPL(snd_soc_dapm_sync); |
2b97eabc | 934 | |
105f1c28 MB |
935 | static int snd_soc_dapm_add_route(struct snd_soc_codec *codec, |
936 | const char *sink, const char *control, const char *source) | |
2b97eabc RP |
937 | { |
938 | struct snd_soc_dapm_path *path; | |
939 | struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w; | |
940 | int ret = 0; | |
941 | ||
942 | /* find src and dest widgets */ | |
943 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
944 | ||
945 | if (!wsink && !(strcmp(w->name, sink))) { | |
946 | wsink = w; | |
947 | continue; | |
948 | } | |
949 | if (!wsource && !(strcmp(w->name, source))) { | |
950 | wsource = w; | |
951 | } | |
952 | } | |
953 | ||
954 | if (wsource == NULL || wsink == NULL) | |
955 | return -ENODEV; | |
956 | ||
957 | path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL); | |
958 | if (!path) | |
959 | return -ENOMEM; | |
960 | ||
961 | path->source = wsource; | |
962 | path->sink = wsink; | |
963 | INIT_LIST_HEAD(&path->list); | |
964 | INIT_LIST_HEAD(&path->list_source); | |
965 | INIT_LIST_HEAD(&path->list_sink); | |
966 | ||
967 | /* check for external widgets */ | |
968 | if (wsink->id == snd_soc_dapm_input) { | |
969 | if (wsource->id == snd_soc_dapm_micbias || | |
970 | wsource->id == snd_soc_dapm_mic || | |
1e39221e SF |
971 | wsink->id == snd_soc_dapm_line || |
972 | wsink->id == snd_soc_dapm_output) | |
2b97eabc RP |
973 | wsink->ext = 1; |
974 | } | |
975 | if (wsource->id == snd_soc_dapm_output) { | |
976 | if (wsink->id == snd_soc_dapm_spk || | |
977 | wsink->id == snd_soc_dapm_hp || | |
1e39221e SF |
978 | wsink->id == snd_soc_dapm_line || |
979 | wsink->id == snd_soc_dapm_input) | |
2b97eabc RP |
980 | wsource->ext = 1; |
981 | } | |
982 | ||
983 | /* connect static paths */ | |
984 | if (control == NULL) { | |
985 | list_add(&path->list, &codec->dapm_paths); | |
986 | list_add(&path->list_sink, &wsink->sources); | |
987 | list_add(&path->list_source, &wsource->sinks); | |
988 | path->connect = 1; | |
989 | return 0; | |
990 | } | |
991 | ||
992 | /* connect dynamic paths */ | |
993 | switch(wsink->id) { | |
994 | case snd_soc_dapm_adc: | |
995 | case snd_soc_dapm_dac: | |
996 | case snd_soc_dapm_pga: | |
997 | case snd_soc_dapm_input: | |
998 | case snd_soc_dapm_output: | |
999 | case snd_soc_dapm_micbias: | |
1000 | case snd_soc_dapm_vmid: | |
1001 | case snd_soc_dapm_pre: | |
1002 | case snd_soc_dapm_post: | |
1003 | list_add(&path->list, &codec->dapm_paths); | |
1004 | list_add(&path->list_sink, &wsink->sources); | |
1005 | list_add(&path->list_source, &wsource->sinks); | |
1006 | path->connect = 1; | |
1007 | return 0; | |
1008 | case snd_soc_dapm_mux: | |
74155556 | 1009 | case snd_soc_dapm_value_mux: |
2b97eabc RP |
1010 | ret = dapm_connect_mux(codec, wsource, wsink, path, control, |
1011 | &wsink->kcontrols[0]); | |
1012 | if (ret != 0) | |
1013 | goto err; | |
1014 | break; | |
1015 | case snd_soc_dapm_switch: | |
1016 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1017 | case snd_soc_dapm_mixer_named_ctl: |
2b97eabc RP |
1018 | ret = dapm_connect_mixer(codec, wsource, wsink, path, control); |
1019 | if (ret != 0) | |
1020 | goto err; | |
1021 | break; | |
1022 | case snd_soc_dapm_hp: | |
1023 | case snd_soc_dapm_mic: | |
1024 | case snd_soc_dapm_line: | |
1025 | case snd_soc_dapm_spk: | |
1026 | list_add(&path->list, &codec->dapm_paths); | |
1027 | list_add(&path->list_sink, &wsink->sources); | |
1028 | list_add(&path->list_source, &wsource->sinks); | |
1029 | path->connect = 0; | |
1030 | return 0; | |
1031 | } | |
1032 | return 0; | |
1033 | ||
1034 | err: | |
1035 | printk(KERN_WARNING "asoc: no dapm match for %s --> %s --> %s\n", source, | |
1036 | control, sink); | |
1037 | kfree(path); | |
1038 | return ret; | |
1039 | } | |
105f1c28 | 1040 | |
105f1c28 MB |
1041 | /** |
1042 | * snd_soc_dapm_add_routes - Add routes between DAPM widgets | |
1043 | * @codec: codec | |
1044 | * @route: audio routes | |
1045 | * @num: number of routes | |
1046 | * | |
1047 | * Connects 2 dapm widgets together via a named audio path. The sink is | |
1048 | * the widget receiving the audio signal, whilst the source is the sender | |
1049 | * of the audio signal. | |
1050 | * | |
1051 | * Returns 0 for success else error. On error all resources can be freed | |
1052 | * with a call to snd_soc_card_free(). | |
1053 | */ | |
1054 | int snd_soc_dapm_add_routes(struct snd_soc_codec *codec, | |
1055 | const struct snd_soc_dapm_route *route, int num) | |
1056 | { | |
1057 | int i, ret; | |
1058 | ||
1059 | for (i = 0; i < num; i++) { | |
1060 | ret = snd_soc_dapm_add_route(codec, route->sink, | |
1061 | route->control, route->source); | |
1062 | if (ret < 0) { | |
1063 | printk(KERN_ERR "Failed to add route %s->%s\n", | |
1064 | route->source, | |
1065 | route->sink); | |
1066 | return ret; | |
1067 | } | |
1068 | route++; | |
1069 | } | |
1070 | ||
1071 | return 0; | |
1072 | } | |
1073 | EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes); | |
1074 | ||
2b97eabc RP |
1075 | /** |
1076 | * snd_soc_dapm_new_widgets - add new dapm widgets | |
1077 | * @codec: audio codec | |
1078 | * | |
1079 | * Checks the codec for any new dapm widgets and creates them if found. | |
1080 | * | |
1081 | * Returns 0 for success. | |
1082 | */ | |
1083 | int snd_soc_dapm_new_widgets(struct snd_soc_codec *codec) | |
1084 | { | |
1085 | struct snd_soc_dapm_widget *w; | |
1086 | ||
2b97eabc RP |
1087 | list_for_each_entry(w, &codec->dapm_widgets, list) |
1088 | { | |
1089 | if (w->new) | |
1090 | continue; | |
1091 | ||
1092 | switch(w->id) { | |
1093 | case snd_soc_dapm_switch: | |
1094 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1095 | case snd_soc_dapm_mixer_named_ctl: |
2b97eabc RP |
1096 | dapm_new_mixer(codec, w); |
1097 | break; | |
1098 | case snd_soc_dapm_mux: | |
2e72f8e3 | 1099 | case snd_soc_dapm_value_mux: |
2b97eabc RP |
1100 | dapm_new_mux(codec, w); |
1101 | break; | |
1102 | case snd_soc_dapm_adc: | |
1103 | case snd_soc_dapm_dac: | |
1104 | case snd_soc_dapm_pga: | |
1105 | dapm_new_pga(codec, w); | |
1106 | break; | |
1107 | case snd_soc_dapm_input: | |
1108 | case snd_soc_dapm_output: | |
1109 | case snd_soc_dapm_micbias: | |
1110 | case snd_soc_dapm_spk: | |
1111 | case snd_soc_dapm_hp: | |
1112 | case snd_soc_dapm_mic: | |
1113 | case snd_soc_dapm_line: | |
1114 | case snd_soc_dapm_vmid: | |
1115 | case snd_soc_dapm_pre: | |
1116 | case snd_soc_dapm_post: | |
1117 | break; | |
1118 | } | |
1119 | w->new = 1; | |
1120 | } | |
1121 | ||
1122 | dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP); | |
2b97eabc RP |
1123 | return 0; |
1124 | } | |
1125 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets); | |
1126 | ||
1127 | /** | |
1128 | * snd_soc_dapm_get_volsw - dapm mixer get callback | |
1129 | * @kcontrol: mixer control | |
ac11a2b3 | 1130 | * @ucontrol: control element information |
2b97eabc RP |
1131 | * |
1132 | * Callback to get the value of a dapm mixer control. | |
1133 | * | |
1134 | * Returns 0 for success. | |
1135 | */ | |
1136 | int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol, | |
1137 | struct snd_ctl_elem_value *ucontrol) | |
1138 | { | |
1139 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
4eaa9819 JS |
1140 | struct soc_mixer_control *mc = |
1141 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
1142 | unsigned int reg = mc->reg; |
1143 | unsigned int shift = mc->shift; | |
1144 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1145 | int max = mc->max; |
815ecf8d JS |
1146 | unsigned int invert = mc->invert; |
1147 | unsigned int mask = (1 << fls(max)) - 1; | |
2b97eabc RP |
1148 | |
1149 | /* return the saved value if we are powered down */ | |
1150 | if (widget->id == snd_soc_dapm_pga && !widget->power) { | |
1151 | ucontrol->value.integer.value[0] = widget->saved_value; | |
1152 | return 0; | |
1153 | } | |
1154 | ||
1155 | ucontrol->value.integer.value[0] = | |
1156 | (snd_soc_read(widget->codec, reg) >> shift) & mask; | |
1157 | if (shift != rshift) | |
1158 | ucontrol->value.integer.value[1] = | |
1159 | (snd_soc_read(widget->codec, reg) >> rshift) & mask; | |
1160 | if (invert) { | |
1161 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1162 | max - ucontrol->value.integer.value[0]; |
2b97eabc RP |
1163 | if (shift != rshift) |
1164 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 1165 | max - ucontrol->value.integer.value[1]; |
2b97eabc RP |
1166 | } |
1167 | ||
1168 | return 0; | |
1169 | } | |
1170 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw); | |
1171 | ||
1172 | /** | |
1173 | * snd_soc_dapm_put_volsw - dapm mixer set callback | |
1174 | * @kcontrol: mixer control | |
ac11a2b3 | 1175 | * @ucontrol: control element information |
2b97eabc RP |
1176 | * |
1177 | * Callback to set the value of a dapm mixer control. | |
1178 | * | |
1179 | * Returns 0 for success. | |
1180 | */ | |
1181 | int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, | |
1182 | struct snd_ctl_elem_value *ucontrol) | |
1183 | { | |
1184 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
4eaa9819 JS |
1185 | struct soc_mixer_control *mc = |
1186 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
1187 | unsigned int reg = mc->reg; |
1188 | unsigned int shift = mc->shift; | |
1189 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1190 | int max = mc->max; |
815ecf8d JS |
1191 | unsigned int mask = (1 << fls(max)) - 1; |
1192 | unsigned int invert = mc->invert; | |
2b97eabc RP |
1193 | unsigned short val, val2, val_mask; |
1194 | int ret; | |
1195 | ||
1196 | val = (ucontrol->value.integer.value[0] & mask); | |
1197 | ||
1198 | if (invert) | |
a7a4ac86 | 1199 | val = max - val; |
2b97eabc RP |
1200 | val_mask = mask << shift; |
1201 | val = val << shift; | |
1202 | if (shift != rshift) { | |
1203 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1204 | if (invert) | |
a7a4ac86 | 1205 | val2 = max - val2; |
2b97eabc RP |
1206 | val_mask |= mask << rshift; |
1207 | val |= val2 << rshift; | |
1208 | } | |
1209 | ||
1210 | mutex_lock(&widget->codec->mutex); | |
1211 | widget->value = val; | |
1212 | ||
1213 | /* save volume value if the widget is powered down */ | |
1214 | if (widget->id == snd_soc_dapm_pga && !widget->power) { | |
1215 | widget->saved_value = val; | |
1216 | mutex_unlock(&widget->codec->mutex); | |
1217 | return 1; | |
1218 | } | |
1219 | ||
1220 | dapm_mixer_update_power(widget, kcontrol, reg, val_mask, val, invert); | |
1221 | if (widget->event) { | |
1222 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
9af6d956 LG |
1223 | ret = widget->event(widget, kcontrol, |
1224 | SND_SOC_DAPM_PRE_REG); | |
1225 | if (ret < 0) { | |
1226 | ret = 1; | |
2b97eabc | 1227 | goto out; |
9af6d956 | 1228 | } |
2b97eabc RP |
1229 | } |
1230 | ret = snd_soc_update_bits(widget->codec, reg, val_mask, val); | |
1231 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
9af6d956 LG |
1232 | ret = widget->event(widget, kcontrol, |
1233 | SND_SOC_DAPM_POST_REG); | |
2b97eabc RP |
1234 | } else |
1235 | ret = snd_soc_update_bits(widget->codec, reg, val_mask, val); | |
1236 | ||
1237 | out: | |
1238 | mutex_unlock(&widget->codec->mutex); | |
1239 | return ret; | |
1240 | } | |
1241 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw); | |
1242 | ||
1243 | /** | |
1244 | * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback | |
1245 | * @kcontrol: mixer control | |
ac11a2b3 | 1246 | * @ucontrol: control element information |
2b97eabc RP |
1247 | * |
1248 | * Callback to get the value of a dapm enumerated double mixer control. | |
1249 | * | |
1250 | * Returns 0 for success. | |
1251 | */ | |
1252 | int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol, | |
1253 | struct snd_ctl_elem_value *ucontrol) | |
1254 | { | |
1255 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1256 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1257 | unsigned short val, bitmask; | |
1258 | ||
f8ba0b7b | 1259 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
1260 | ; |
1261 | val = snd_soc_read(widget->codec, e->reg); | |
1262 | ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1); | |
1263 | if (e->shift_l != e->shift_r) | |
1264 | ucontrol->value.enumerated.item[1] = | |
1265 | (val >> e->shift_r) & (bitmask - 1); | |
1266 | ||
1267 | return 0; | |
1268 | } | |
1269 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double); | |
1270 | ||
1271 | /** | |
1272 | * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback | |
1273 | * @kcontrol: mixer control | |
ac11a2b3 | 1274 | * @ucontrol: control element information |
2b97eabc RP |
1275 | * |
1276 | * Callback to set the value of a dapm enumerated double mixer control. | |
1277 | * | |
1278 | * Returns 0 for success. | |
1279 | */ | |
1280 | int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, | |
1281 | struct snd_ctl_elem_value *ucontrol) | |
1282 | { | |
1283 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1284 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1285 | unsigned short val, mux; | |
1286 | unsigned short mask, bitmask; | |
1287 | int ret = 0; | |
1288 | ||
f8ba0b7b | 1289 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc | 1290 | ; |
f8ba0b7b | 1291 | if (ucontrol->value.enumerated.item[0] > e->max - 1) |
2b97eabc RP |
1292 | return -EINVAL; |
1293 | mux = ucontrol->value.enumerated.item[0]; | |
1294 | val = mux << e->shift_l; | |
1295 | mask = (bitmask - 1) << e->shift_l; | |
1296 | if (e->shift_l != e->shift_r) { | |
f8ba0b7b | 1297 | if (ucontrol->value.enumerated.item[1] > e->max - 1) |
2b97eabc RP |
1298 | return -EINVAL; |
1299 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
1300 | mask |= (bitmask - 1) << e->shift_r; | |
1301 | } | |
1302 | ||
1303 | mutex_lock(&widget->codec->mutex); | |
1304 | widget->value = val; | |
cb01e2b9 | 1305 | dapm_mux_update_power(widget, kcontrol, mask, mux, val, e); |
2b97eabc RP |
1306 | if (widget->event) { |
1307 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
9af6d956 LG |
1308 | ret = widget->event(widget, |
1309 | kcontrol, SND_SOC_DAPM_PRE_REG); | |
2b97eabc RP |
1310 | if (ret < 0) |
1311 | goto out; | |
1312 | } | |
1313 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1314 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
9af6d956 LG |
1315 | ret = widget->event(widget, |
1316 | kcontrol, SND_SOC_DAPM_POST_REG); | |
2b97eabc RP |
1317 | } else |
1318 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1319 | ||
1320 | out: | |
1321 | mutex_unlock(&widget->codec->mutex); | |
1322 | return ret; | |
1323 | } | |
1324 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double); | |
1325 | ||
2e72f8e3 PU |
1326 | /** |
1327 | * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get | |
1328 | * callback | |
1329 | * @kcontrol: mixer control | |
1330 | * @ucontrol: control element information | |
1331 | * | |
1332 | * Callback to get the value of a dapm semi enumerated double mixer control. | |
1333 | * | |
1334 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
1335 | * used for handling bitfield coded enumeration for example. | |
1336 | * | |
1337 | * Returns 0 for success. | |
1338 | */ | |
1339 | int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol *kcontrol, | |
1340 | struct snd_ctl_elem_value *ucontrol) | |
1341 | { | |
1342 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
74155556 | 1343 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
2e72f8e3 PU |
1344 | unsigned short reg_val, val, mux; |
1345 | ||
1346 | reg_val = snd_soc_read(widget->codec, e->reg); | |
1347 | val = (reg_val >> e->shift_l) & e->mask; | |
1348 | for (mux = 0; mux < e->max; mux++) { | |
1349 | if (val == e->values[mux]) | |
1350 | break; | |
1351 | } | |
1352 | ucontrol->value.enumerated.item[0] = mux; | |
1353 | if (e->shift_l != e->shift_r) { | |
1354 | val = (reg_val >> e->shift_r) & e->mask; | |
1355 | for (mux = 0; mux < e->max; mux++) { | |
1356 | if (val == e->values[mux]) | |
1357 | break; | |
1358 | } | |
1359 | ucontrol->value.enumerated.item[1] = mux; | |
1360 | } | |
1361 | ||
1362 | return 0; | |
1363 | } | |
1364 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double); | |
1365 | ||
1366 | /** | |
1367 | * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set | |
1368 | * callback | |
1369 | * @kcontrol: mixer control | |
1370 | * @ucontrol: control element information | |
1371 | * | |
1372 | * Callback to set the value of a dapm semi enumerated double mixer control. | |
1373 | * | |
1374 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
1375 | * used for handling bitfield coded enumeration for example. | |
1376 | * | |
1377 | * Returns 0 for success. | |
1378 | */ | |
1379 | int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol, | |
1380 | struct snd_ctl_elem_value *ucontrol) | |
1381 | { | |
1382 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
74155556 | 1383 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
2e72f8e3 PU |
1384 | unsigned short val, mux; |
1385 | unsigned short mask; | |
1386 | int ret = 0; | |
1387 | ||
1388 | if (ucontrol->value.enumerated.item[0] > e->max - 1) | |
1389 | return -EINVAL; | |
1390 | mux = ucontrol->value.enumerated.item[0]; | |
1391 | val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l; | |
1392 | mask = e->mask << e->shift_l; | |
1393 | if (e->shift_l != e->shift_r) { | |
1394 | if (ucontrol->value.enumerated.item[1] > e->max - 1) | |
1395 | return -EINVAL; | |
1396 | val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r; | |
1397 | mask |= e->mask << e->shift_r; | |
1398 | } | |
1399 | ||
1400 | mutex_lock(&widget->codec->mutex); | |
1401 | widget->value = val; | |
74155556 | 1402 | dapm_mux_update_power(widget, kcontrol, mask, mux, val, e); |
2e72f8e3 PU |
1403 | if (widget->event) { |
1404 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
1405 | ret = widget->event(widget, | |
1406 | kcontrol, SND_SOC_DAPM_PRE_REG); | |
1407 | if (ret < 0) | |
1408 | goto out; | |
1409 | } | |
1410 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1411 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
1412 | ret = widget->event(widget, | |
1413 | kcontrol, SND_SOC_DAPM_POST_REG); | |
1414 | } else | |
1415 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1416 | ||
1417 | out: | |
1418 | mutex_unlock(&widget->codec->mutex); | |
1419 | return ret; | |
1420 | } | |
1421 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double); | |
1422 | ||
2b97eabc RP |
1423 | /** |
1424 | * snd_soc_dapm_new_control - create new dapm control | |
1425 | * @codec: audio codec | |
1426 | * @widget: widget template | |
1427 | * | |
1428 | * Creates a new dapm control based upon the template. | |
1429 | * | |
1430 | * Returns 0 for success else error. | |
1431 | */ | |
1432 | int snd_soc_dapm_new_control(struct snd_soc_codec *codec, | |
1433 | const struct snd_soc_dapm_widget *widget) | |
1434 | { | |
1435 | struct snd_soc_dapm_widget *w; | |
1436 | ||
1437 | if ((w = dapm_cnew_widget(widget)) == NULL) | |
1438 | return -ENOMEM; | |
1439 | ||
1440 | w->codec = codec; | |
1441 | INIT_LIST_HEAD(&w->sources); | |
1442 | INIT_LIST_HEAD(&w->sinks); | |
1443 | INIT_LIST_HEAD(&w->list); | |
1444 | list_add(&w->list, &codec->dapm_widgets); | |
1445 | ||
1446 | /* machine layer set ups unconnected pins and insertions */ | |
1447 | w->connected = 1; | |
1448 | return 0; | |
1449 | } | |
1450 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control); | |
1451 | ||
4ba1327a MB |
1452 | /** |
1453 | * snd_soc_dapm_new_controls - create new dapm controls | |
1454 | * @codec: audio codec | |
1455 | * @widget: widget array | |
1456 | * @num: number of widgets | |
1457 | * | |
1458 | * Creates new DAPM controls based upon the templates. | |
1459 | * | |
1460 | * Returns 0 for success else error. | |
1461 | */ | |
1462 | int snd_soc_dapm_new_controls(struct snd_soc_codec *codec, | |
1463 | const struct snd_soc_dapm_widget *widget, | |
1464 | int num) | |
1465 | { | |
1466 | int i, ret; | |
1467 | ||
1468 | for (i = 0; i < num; i++) { | |
1469 | ret = snd_soc_dapm_new_control(codec, widget); | |
b8b33cb5 MB |
1470 | if (ret < 0) { |
1471 | printk(KERN_ERR | |
1472 | "ASoC: Failed to create DAPM control %s: %d\n", | |
1473 | widget->name, ret); | |
4ba1327a | 1474 | return ret; |
b8b33cb5 | 1475 | } |
4ba1327a MB |
1476 | widget++; |
1477 | } | |
1478 | return 0; | |
1479 | } | |
1480 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls); | |
1481 | ||
1482 | ||
2b97eabc RP |
1483 | /** |
1484 | * snd_soc_dapm_stream_event - send a stream event to the dapm core | |
1485 | * @codec: audio codec | |
1486 | * @stream: stream name | |
1487 | * @event: stream event | |
1488 | * | |
1489 | * Sends a stream event to the dapm core. The core then makes any | |
1490 | * necessary widget power changes. | |
1491 | * | |
1492 | * Returns 0 for success else error. | |
1493 | */ | |
1494 | int snd_soc_dapm_stream_event(struct snd_soc_codec *codec, | |
1495 | char *stream, int event) | |
1496 | { | |
1497 | struct snd_soc_dapm_widget *w; | |
1498 | ||
11da21a7 SF |
1499 | if (stream == NULL) |
1500 | return 0; | |
1501 | ||
2b97eabc RP |
1502 | mutex_lock(&codec->mutex); |
1503 | list_for_each_entry(w, &codec->dapm_widgets, list) | |
1504 | { | |
1505 | if (!w->sname) | |
1506 | continue; | |
c1286b86 MB |
1507 | pr_debug("widget %s\n %s stream %s event %d\n", |
1508 | w->name, w->sname, stream, event); | |
2b97eabc RP |
1509 | if (strstr(w->sname, stream)) { |
1510 | switch(event) { | |
1511 | case SND_SOC_DAPM_STREAM_START: | |
1512 | w->active = 1; | |
1513 | break; | |
1514 | case SND_SOC_DAPM_STREAM_STOP: | |
1515 | w->active = 0; | |
1516 | break; | |
1517 | case SND_SOC_DAPM_STREAM_SUSPEND: | |
1518 | if (w->active) | |
1519 | w->suspend = 1; | |
1520 | w->active = 0; | |
1521 | break; | |
1522 | case SND_SOC_DAPM_STREAM_RESUME: | |
1523 | if (w->suspend) { | |
1524 | w->active = 1; | |
1525 | w->suspend = 0; | |
1526 | } | |
1527 | break; | |
1528 | case SND_SOC_DAPM_STREAM_PAUSE_PUSH: | |
1529 | break; | |
1530 | case SND_SOC_DAPM_STREAM_PAUSE_RELEASE: | |
1531 | break; | |
1532 | } | |
1533 | } | |
1534 | } | |
1535 | mutex_unlock(&codec->mutex); | |
1536 | ||
1537 | dapm_power_widgets(codec, event); | |
9bf8e7dd | 1538 | dump_dapm(codec, __func__); |
2b97eabc RP |
1539 | return 0; |
1540 | } | |
1541 | EXPORT_SYMBOL_GPL(snd_soc_dapm_stream_event); | |
1542 | ||
0b4d221b | 1543 | /** |
0be9898a | 1544 | * snd_soc_dapm_set_bias_level - set the bias level for the system |
0b4d221b | 1545 | * @socdev: audio device |
0be9898a | 1546 | * @level: level to configure |
0b4d221b | 1547 | * |
0be9898a | 1548 | * Configure the bias (power) levels for the SoC audio device. |
0b4d221b LG |
1549 | * |
1550 | * Returns 0 for success else error. | |
1551 | */ | |
0be9898a MB |
1552 | int snd_soc_dapm_set_bias_level(struct snd_soc_device *socdev, |
1553 | enum snd_soc_bias_level level) | |
0b4d221b | 1554 | { |
87506549 | 1555 | struct snd_soc_card *card = socdev->card; |
6627a653 | 1556 | struct snd_soc_codec *codec = socdev->card->codec; |
0be9898a | 1557 | int ret = 0; |
0b4d221b | 1558 | |
87506549 MB |
1559 | if (card->set_bias_level) |
1560 | ret = card->set_bias_level(card, level); | |
0be9898a MB |
1561 | if (ret == 0 && codec->set_bias_level) |
1562 | ret = codec->set_bias_level(codec, level); | |
1563 | ||
1564 | return ret; | |
0b4d221b | 1565 | } |
0b4d221b | 1566 | |
2b97eabc | 1567 | /** |
a5302181 | 1568 | * snd_soc_dapm_enable_pin - enable pin. |
ac11a2b3 | 1569 | * @codec: SoC codec |
a5302181 | 1570 | * @pin: pin name |
2b97eabc | 1571 | * |
a5302181 LG |
1572 | * Enables input/output pin and it's parents or children widgets iff there is |
1573 | * a valid audio route and active audio stream. | |
1574 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
1575 | * do any widget power switching. | |
2b97eabc | 1576 | */ |
1649923d | 1577 | int snd_soc_dapm_enable_pin(struct snd_soc_codec *codec, const char *pin) |
2b97eabc | 1578 | { |
a5302181 LG |
1579 | return snd_soc_dapm_set_pin(codec, pin, 1); |
1580 | } | |
1581 | EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin); | |
2b97eabc | 1582 | |
a5302181 LG |
1583 | /** |
1584 | * snd_soc_dapm_disable_pin - disable pin. | |
1585 | * @codec: SoC codec | |
1586 | * @pin: pin name | |
1587 | * | |
1588 | * Disables input/output pin and it's parents or children widgets. | |
1589 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
1590 | * do any widget power switching. | |
1591 | */ | |
1649923d | 1592 | int snd_soc_dapm_disable_pin(struct snd_soc_codec *codec, const char *pin) |
a5302181 LG |
1593 | { |
1594 | return snd_soc_dapm_set_pin(codec, pin, 0); | |
2b97eabc | 1595 | } |
a5302181 | 1596 | EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin); |
2b97eabc | 1597 | |
5817b52a MB |
1598 | /** |
1599 | * snd_soc_dapm_nc_pin - permanently disable pin. | |
1600 | * @codec: SoC codec | |
1601 | * @pin: pin name | |
1602 | * | |
1603 | * Marks the specified pin as being not connected, disabling it along | |
1604 | * any parent or child widgets. At present this is identical to | |
1605 | * snd_soc_dapm_disable_pin() but in future it will be extended to do | |
1606 | * additional things such as disabling controls which only affect | |
1607 | * paths through the pin. | |
1608 | * | |
1609 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
1610 | * do any widget power switching. | |
1611 | */ | |
1649923d | 1612 | int snd_soc_dapm_nc_pin(struct snd_soc_codec *codec, const char *pin) |
5817b52a MB |
1613 | { |
1614 | return snd_soc_dapm_set_pin(codec, pin, 0); | |
1615 | } | |
1616 | EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin); | |
1617 | ||
eeec12bf | 1618 | /** |
a5302181 | 1619 | * snd_soc_dapm_get_pin_status - get audio pin status |
eeec12bf | 1620 | * @codec: audio codec |
a5302181 | 1621 | * @pin: audio signal pin endpoint (or start point) |
eeec12bf | 1622 | * |
a5302181 | 1623 | * Get audio pin status - connected or disconnected. |
eeec12bf | 1624 | * |
a5302181 | 1625 | * Returns 1 for connected otherwise 0. |
eeec12bf | 1626 | */ |
1649923d | 1627 | int snd_soc_dapm_get_pin_status(struct snd_soc_codec *codec, const char *pin) |
eeec12bf GG |
1628 | { |
1629 | struct snd_soc_dapm_widget *w; | |
1630 | ||
1631 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
a5302181 | 1632 | if (!strcmp(w->name, pin)) |
eeec12bf GG |
1633 | return w->connected; |
1634 | } | |
1635 | ||
1636 | return 0; | |
1637 | } | |
a5302181 | 1638 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status); |
eeec12bf | 1639 | |
2b97eabc RP |
1640 | /** |
1641 | * snd_soc_dapm_free - free dapm resources | |
1642 | * @socdev: SoC device | |
1643 | * | |
1644 | * Free all dapm widgets and resources. | |
1645 | */ | |
1646 | void snd_soc_dapm_free(struct snd_soc_device *socdev) | |
1647 | { | |
6627a653 | 1648 | struct snd_soc_codec *codec = socdev->card->codec; |
2b97eabc RP |
1649 | |
1650 | snd_soc_dapm_sys_remove(socdev->dev); | |
1651 | dapm_free_widgets(codec); | |
1652 | } | |
1653 | EXPORT_SYMBOL_GPL(snd_soc_dapm_free); | |
1654 | ||
1655 | /* Module information */ | |
d331124d | 1656 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
2b97eabc RP |
1657 | MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC"); |
1658 | MODULE_LICENSE("GPL"); |