]>
Commit | Line | Data |
---|---|---|
2b97eabc RP |
1 | /* |
2 | * soc-dapm.c -- ALSA SoC Dynamic Audio Power Management | |
3 | * | |
4 | * Copyright 2005 Wolfson Microelectronics PLC. | |
5 | * Author: Liam Girdwood | |
6 | * liam.girdwood@wolfsonmicro.com or linux@wolfsonmicro.com | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License as published by the | |
10 | * Free Software Foundation; either version 2 of the License, or (at your | |
11 | * option) any later version. | |
12 | * | |
13 | * Revision history | |
14 | * 12th Aug 2005 Initial version. | |
15 | * 25th Oct 2005 Implemented path power domain. | |
16 | * 18th Dec 2005 Implemented machine and stream level power domain. | |
17 | * | |
18 | * Features: | |
19 | * o Changes power status of internal codec blocks depending on the | |
20 | * dynamic configuration of codec internal audio paths and active | |
21 | * DAC's/ADC's. | |
22 | * o Platform power domain - can support external components i.e. amps and | |
23 | * mic/meadphone insertion events. | |
24 | * o Automatic Mic Bias support | |
25 | * o Jack insertion power event initiation - e.g. hp insertion will enable | |
26 | * sinks, dacs, etc | |
27 | * o Delayed powerdown of audio susbsytem to reduce pops between a quick | |
28 | * device reopen. | |
29 | * | |
30 | * Todo: | |
31 | * o DAPM power change sequencing - allow for configurable per | |
32 | * codec sequences. | |
33 | * o Support for analogue bias optimisation. | |
34 | * o Support for reduced codec oversampling rates. | |
35 | * o Support for reduced codec bias currents. | |
36 | */ | |
37 | ||
38 | #include <linux/module.h> | |
39 | #include <linux/moduleparam.h> | |
40 | #include <linux/init.h> | |
41 | #include <linux/delay.h> | |
42 | #include <linux/pm.h> | |
43 | #include <linux/bitops.h> | |
44 | #include <linux/platform_device.h> | |
45 | #include <linux/jiffies.h> | |
46 | #include <sound/driver.h> | |
47 | #include <sound/core.h> | |
48 | #include <sound/pcm.h> | |
49 | #include <sound/pcm_params.h> | |
50 | #include <sound/soc-dapm.h> | |
51 | #include <sound/initval.h> | |
52 | ||
53 | /* debug */ | |
54 | #define DAPM_DEBUG 0 | |
55 | #if DAPM_DEBUG | |
56 | #define dump_dapm(codec, action) dbg_dump_dapm(codec, action) | |
57 | #define dbg(format, arg...) printk(format, ## arg) | |
58 | #else | |
59 | #define dump_dapm(codec, action) | |
60 | #define dbg(format, arg...) | |
61 | #endif | |
62 | ||
63 | #define POP_DEBUG 0 | |
64 | #if POP_DEBUG | |
65 | #define POP_TIME 500 /* 500 msecs - change if pop debug is too fast */ | |
66 | #define pop_wait(time) schedule_timeout_interruptible(msecs_to_jiffies(time)) | |
67 | #define pop_dbg(format, arg...) printk(format, ## arg); pop_wait(POP_TIME) | |
68 | #else | |
69 | #define pop_dbg(format, arg...) | |
70 | #define pop_wait(time) | |
71 | #endif | |
72 | ||
73 | /* dapm power sequences - make this per codec in the future */ | |
74 | static int dapm_up_seq[] = { | |
75 | snd_soc_dapm_pre, snd_soc_dapm_micbias, snd_soc_dapm_mic, | |
76 | snd_soc_dapm_mux, snd_soc_dapm_dac, snd_soc_dapm_mixer, snd_soc_dapm_pga, | |
77 | snd_soc_dapm_adc, snd_soc_dapm_hp, snd_soc_dapm_spk, snd_soc_dapm_post | |
78 | }; | |
79 | static int dapm_down_seq[] = { | |
80 | snd_soc_dapm_pre, snd_soc_dapm_adc, snd_soc_dapm_hp, snd_soc_dapm_spk, | |
81 | snd_soc_dapm_pga, snd_soc_dapm_mixer, snd_soc_dapm_dac, snd_soc_dapm_mic, | |
82 | snd_soc_dapm_micbias, snd_soc_dapm_mux, snd_soc_dapm_post | |
83 | }; | |
84 | ||
85 | static int dapm_status = 1; | |
86 | module_param(dapm_status, int, 0); | |
87 | MODULE_PARM_DESC(dapm_status, "enable DPM sysfs entries"); | |
88 | ||
89 | /* create a new dapm widget */ | |
90 | static struct snd_soc_dapm_widget *dapm_cnew_widget( | |
91 | const struct snd_soc_dapm_widget *_widget) | |
92 | { | |
93 | struct snd_soc_dapm_widget* widget; | |
94 | widget = kmalloc(sizeof(struct snd_soc_dapm_widget), GFP_KERNEL); | |
95 | if (!widget) | |
96 | return NULL; | |
97 | ||
98 | memcpy(widget, _widget, sizeof(struct snd_soc_dapm_widget)); | |
99 | return widget; | |
100 | } | |
101 | ||
102 | /* set up initial codec paths */ | |
103 | static void dapm_set_path_status(struct snd_soc_dapm_widget *w, | |
104 | struct snd_soc_dapm_path *p, int i) | |
105 | { | |
106 | switch (w->id) { | |
107 | case snd_soc_dapm_switch: | |
108 | case snd_soc_dapm_mixer: { | |
109 | int val; | |
110 | int reg = w->kcontrols[i].private_value & 0xff; | |
111 | int shift = (w->kcontrols[i].private_value >> 8) & 0x0f; | |
112 | int mask = (w->kcontrols[i].private_value >> 16) & 0xff; | |
113 | int invert = (w->kcontrols[i].private_value >> 24) & 0x01; | |
114 | ||
115 | val = snd_soc_read(w->codec, reg); | |
116 | val = (val >> shift) & mask; | |
117 | ||
118 | if ((invert && !val) || (!invert && val)) | |
119 | p->connect = 1; | |
120 | else | |
121 | p->connect = 0; | |
122 | } | |
123 | break; | |
124 | case snd_soc_dapm_mux: { | |
125 | struct soc_enum *e = (struct soc_enum *)w->kcontrols[i].private_value; | |
126 | int val, item, bitmask; | |
127 | ||
128 | for (bitmask = 1; bitmask < e->mask; bitmask <<= 1) | |
129 | ; | |
130 | val = snd_soc_read(w->codec, e->reg); | |
131 | item = (val >> e->shift_l) & (bitmask - 1); | |
132 | ||
133 | p->connect = 0; | |
134 | for (i = 0; i < e->mask; i++) { | |
135 | if (!(strcmp(p->name, e->texts[i])) && item == i) | |
136 | p->connect = 1; | |
137 | } | |
138 | } | |
139 | break; | |
140 | /* does not effect routing - always connected */ | |
141 | case snd_soc_dapm_pga: | |
142 | case snd_soc_dapm_output: | |
143 | case snd_soc_dapm_adc: | |
144 | case snd_soc_dapm_input: | |
145 | case snd_soc_dapm_dac: | |
146 | case snd_soc_dapm_micbias: | |
147 | case snd_soc_dapm_vmid: | |
148 | p->connect = 1; | |
149 | break; | |
150 | /* does effect routing - dynamically connected */ | |
151 | case snd_soc_dapm_hp: | |
152 | case snd_soc_dapm_mic: | |
153 | case snd_soc_dapm_spk: | |
154 | case snd_soc_dapm_line: | |
155 | case snd_soc_dapm_pre: | |
156 | case snd_soc_dapm_post: | |
157 | p->connect = 0; | |
158 | break; | |
159 | } | |
160 | } | |
161 | ||
162 | /* connect mux widget to it's interconnecting audio paths */ | |
163 | static int dapm_connect_mux(struct snd_soc_codec *codec, | |
164 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, | |
165 | struct snd_soc_dapm_path *path, const char *control_name, | |
166 | const struct snd_kcontrol_new *kcontrol) | |
167 | { | |
168 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
169 | int i; | |
170 | ||
171 | for (i = 0; i < e->mask; i++) { | |
172 | if (!(strcmp(control_name, e->texts[i]))) { | |
173 | list_add(&path->list, &codec->dapm_paths); | |
174 | list_add(&path->list_sink, &dest->sources); | |
175 | list_add(&path->list_source, &src->sinks); | |
176 | path->name = (char*)e->texts[i]; | |
177 | dapm_set_path_status(dest, path, 0); | |
178 | return 0; | |
179 | } | |
180 | } | |
181 | ||
182 | return -ENODEV; | |
183 | } | |
184 | ||
185 | /* connect mixer widget to it's interconnecting audio paths */ | |
186 | static int dapm_connect_mixer(struct snd_soc_codec *codec, | |
187 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, | |
188 | struct snd_soc_dapm_path *path, const char *control_name) | |
189 | { | |
190 | int i; | |
191 | ||
192 | /* search for mixer kcontrol */ | |
193 | for (i = 0; i < dest->num_kcontrols; i++) { | |
194 | if (!strcmp(control_name, dest->kcontrols[i].name)) { | |
195 | list_add(&path->list, &codec->dapm_paths); | |
196 | list_add(&path->list_sink, &dest->sources); | |
197 | list_add(&path->list_source, &src->sinks); | |
198 | path->name = dest->kcontrols[i].name; | |
199 | dapm_set_path_status(dest, path, i); | |
200 | return 0; | |
201 | } | |
202 | } | |
203 | return -ENODEV; | |
204 | } | |
205 | ||
206 | /* update dapm codec register bits */ | |
207 | static int dapm_update_bits(struct snd_soc_dapm_widget *widget) | |
208 | { | |
209 | int change, power; | |
210 | unsigned short old, new; | |
211 | struct snd_soc_codec *codec = widget->codec; | |
212 | ||
213 | /* check for valid widgets */ | |
214 | if (widget->reg < 0 || widget->id == snd_soc_dapm_input || | |
215 | widget->id == snd_soc_dapm_output || | |
216 | widget->id == snd_soc_dapm_hp || | |
217 | widget->id == snd_soc_dapm_mic || | |
218 | widget->id == snd_soc_dapm_line || | |
219 | widget->id == snd_soc_dapm_spk) | |
220 | return 0; | |
221 | ||
222 | power = widget->power; | |
223 | if (widget->invert) | |
224 | power = (power ? 0:1); | |
225 | ||
226 | old = snd_soc_read(codec, widget->reg); | |
227 | new = (old & ~(0x1 << widget->shift)) | (power << widget->shift); | |
228 | ||
229 | change = old != new; | |
230 | if (change) { | |
231 | pop_dbg("pop test %s : %s in %d ms\n", widget->name, | |
232 | widget->power ? "on" : "off", POP_TIME); | |
233 | snd_soc_write(codec, widget->reg, new); | |
234 | pop_wait(POP_TIME); | |
235 | } | |
236 | dbg("reg old %x new %x change %d\n", old, new, change); | |
237 | return change; | |
238 | } | |
239 | ||
240 | /* ramps the volume up or down to minimise pops before or after a | |
241 | * DAPM power event */ | |
242 | static int dapm_set_pga(struct snd_soc_dapm_widget *widget, int power) | |
243 | { | |
244 | const struct snd_kcontrol_new *k = widget->kcontrols; | |
245 | ||
246 | if (widget->muted && !power) | |
247 | return 0; | |
248 | if (!widget->muted && power) | |
249 | return 0; | |
250 | ||
251 | if (widget->num_kcontrols && k) { | |
252 | int reg = k->private_value & 0xff; | |
253 | int shift = (k->private_value >> 8) & 0x0f; | |
254 | int mask = (k->private_value >> 16) & 0xff; | |
255 | int invert = (k->private_value >> 24) & 0x01; | |
256 | ||
257 | if (power) { | |
258 | int i; | |
259 | /* power up has happended, increase volume to last level */ | |
260 | if (invert) { | |
261 | for (i = mask; i > widget->saved_value; i--) | |
262 | snd_soc_update_bits(widget->codec, reg, mask, i); | |
263 | } else { | |
264 | for (i = 0; i < widget->saved_value; i++) | |
265 | snd_soc_update_bits(widget->codec, reg, mask, i); | |
266 | } | |
267 | widget->muted = 0; | |
268 | } else { | |
269 | /* power down is about to occur, decrease volume to mute */ | |
270 | int val = snd_soc_read(widget->codec, reg); | |
271 | int i = widget->saved_value = (val >> shift) & mask; | |
272 | if (invert) { | |
273 | for (; i < mask; i++) | |
274 | snd_soc_update_bits(widget->codec, reg, mask, i); | |
275 | } else { | |
276 | for (; i > 0; i--) | |
277 | snd_soc_update_bits(widget->codec, reg, mask, i); | |
278 | } | |
279 | widget->muted = 1; | |
280 | } | |
281 | } | |
282 | return 0; | |
283 | } | |
284 | ||
285 | /* create new dapm mixer control */ | |
286 | static int dapm_new_mixer(struct snd_soc_codec *codec, | |
287 | struct snd_soc_dapm_widget *w) | |
288 | { | |
289 | int i, ret = 0; | |
290 | char name[32]; | |
291 | struct snd_soc_dapm_path *path; | |
292 | ||
293 | /* add kcontrol */ | |
294 | for (i = 0; i < w->num_kcontrols; i++) { | |
295 | ||
296 | /* match name */ | |
297 | list_for_each_entry(path, &w->sources, list_sink) { | |
298 | ||
299 | /* mixer/mux paths name must match control name */ | |
300 | if (path->name != (char*)w->kcontrols[i].name) | |
301 | continue; | |
302 | ||
303 | /* add dapm control with long name */ | |
304 | snprintf(name, 32, "%s %s", w->name, w->kcontrols[i].name); | |
305 | path->long_name = kstrdup (name, GFP_KERNEL); | |
306 | if (path->long_name == NULL) | |
307 | return -ENOMEM; | |
308 | ||
309 | path->kcontrol = snd_soc_cnew(&w->kcontrols[i], w, | |
310 | path->long_name); | |
311 | ret = snd_ctl_add(codec->card, path->kcontrol); | |
312 | if (ret < 0) { | |
313 | printk(KERN_ERR "asoc: failed to add dapm kcontrol %s\n", | |
314 | path->long_name); | |
315 | kfree(path->long_name); | |
316 | path->long_name = NULL; | |
317 | return ret; | |
318 | } | |
319 | } | |
320 | } | |
321 | return ret; | |
322 | } | |
323 | ||
324 | /* create new dapm mux control */ | |
325 | static int dapm_new_mux(struct snd_soc_codec *codec, | |
326 | struct snd_soc_dapm_widget *w) | |
327 | { | |
328 | struct snd_soc_dapm_path *path = NULL; | |
329 | struct snd_kcontrol *kcontrol; | |
330 | int ret = 0; | |
331 | ||
332 | if (!w->num_kcontrols) { | |
333 | printk(KERN_ERR "asoc: mux %s has no controls\n", w->name); | |
334 | return -EINVAL; | |
335 | } | |
336 | ||
337 | kcontrol = snd_soc_cnew(&w->kcontrols[0], w, w->name); | |
338 | ret = snd_ctl_add(codec->card, kcontrol); | |
339 | if (ret < 0) | |
340 | goto err; | |
341 | ||
342 | list_for_each_entry(path, &w->sources, list_sink) | |
343 | path->kcontrol = kcontrol; | |
344 | ||
345 | return ret; | |
346 | ||
347 | err: | |
348 | printk(KERN_ERR "asoc: failed to add kcontrol %s\n", w->name); | |
349 | return ret; | |
350 | } | |
351 | ||
352 | /* create new dapm volume control */ | |
353 | static int dapm_new_pga(struct snd_soc_codec *codec, | |
354 | struct snd_soc_dapm_widget *w) | |
355 | { | |
356 | struct snd_kcontrol *kcontrol; | |
357 | int ret = 0; | |
358 | ||
359 | if (!w->num_kcontrols) | |
360 | return -EINVAL; | |
361 | ||
362 | kcontrol = snd_soc_cnew(&w->kcontrols[0], w, w->name); | |
363 | ret = snd_ctl_add(codec->card, kcontrol); | |
364 | if (ret < 0) { | |
365 | printk(KERN_ERR "asoc: failed to add kcontrol %s\n", w->name); | |
366 | return ret; | |
367 | } | |
368 | ||
369 | return ret; | |
370 | } | |
371 | ||
372 | /* reset 'walked' bit for each dapm path */ | |
373 | static inline void dapm_clear_walk(struct snd_soc_codec *codec) | |
374 | { | |
375 | struct snd_soc_dapm_path *p; | |
376 | ||
377 | list_for_each_entry(p, &codec->dapm_paths, list) | |
378 | p->walked = 0; | |
379 | } | |
380 | ||
381 | /* | |
382 | * Recursively check for a completed path to an active or physically connected | |
383 | * output widget. Returns number of complete paths. | |
384 | */ | |
385 | static int is_connected_output_ep(struct snd_soc_dapm_widget *widget) | |
386 | { | |
387 | struct snd_soc_dapm_path *path; | |
388 | int con = 0; | |
389 | ||
390 | if (widget->id == snd_soc_dapm_adc && widget->active) | |
391 | return 1; | |
392 | ||
393 | if (widget->connected) { | |
394 | /* connected pin ? */ | |
395 | if (widget->id == snd_soc_dapm_output && !widget->ext) | |
396 | return 1; | |
397 | ||
398 | /* connected jack or spk ? */ | |
399 | if (widget->id == snd_soc_dapm_hp || widget->id == snd_soc_dapm_spk || | |
400 | widget->id == snd_soc_dapm_line) | |
401 | return 1; | |
402 | } | |
403 | ||
404 | list_for_each_entry(path, &widget->sinks, list_source) { | |
405 | if (path->walked) | |
406 | continue; | |
407 | ||
408 | if (path->sink && path->connect) { | |
409 | path->walked = 1; | |
410 | con += is_connected_output_ep(path->sink); | |
411 | } | |
412 | } | |
413 | ||
414 | return con; | |
415 | } | |
416 | ||
417 | /* | |
418 | * Recursively check for a completed path to an active or physically connected | |
419 | * input widget. Returns number of complete paths. | |
420 | */ | |
421 | static int is_connected_input_ep(struct snd_soc_dapm_widget *widget) | |
422 | { | |
423 | struct snd_soc_dapm_path *path; | |
424 | int con = 0; | |
425 | ||
426 | /* active stream ? */ | |
427 | if (widget->id == snd_soc_dapm_dac && widget->active) | |
428 | return 1; | |
429 | ||
430 | if (widget->connected) { | |
431 | /* connected pin ? */ | |
432 | if (widget->id == snd_soc_dapm_input && !widget->ext) | |
433 | return 1; | |
434 | ||
435 | /* connected VMID/Bias for lower pops */ | |
436 | if (widget->id == snd_soc_dapm_vmid) | |
437 | return 1; | |
438 | ||
439 | /* connected jack ? */ | |
440 | if (widget->id == snd_soc_dapm_mic || widget->id == snd_soc_dapm_line) | |
441 | return 1; | |
442 | } | |
443 | ||
444 | list_for_each_entry(path, &widget->sources, list_sink) { | |
445 | if (path->walked) | |
446 | continue; | |
447 | ||
448 | if (path->source && path->connect) { | |
449 | path->walked = 1; | |
450 | con += is_connected_input_ep(path->source); | |
451 | } | |
452 | } | |
453 | ||
454 | return con; | |
455 | } | |
456 | ||
457 | /* | |
458 | * Scan each dapm widget for complete audio path. | |
459 | * A complete path is a route that has valid endpoints i.e.:- | |
460 | * | |
461 | * o DAC to output pin. | |
462 | * o Input Pin to ADC. | |
463 | * o Input pin to Output pin (bypass, sidetone) | |
464 | * o DAC to ADC (loopback). | |
465 | */ | |
d9c96cf3 | 466 | static int dapm_power_widgets(struct snd_soc_codec *codec, int event) |
2b97eabc RP |
467 | { |
468 | struct snd_soc_dapm_widget *w; | |
469 | int in, out, i, c = 1, *seq = NULL, ret = 0, power_change, power; | |
470 | ||
471 | /* do we have a sequenced stream event */ | |
472 | if (event == SND_SOC_DAPM_STREAM_START) { | |
473 | c = ARRAY_SIZE(dapm_up_seq); | |
474 | seq = dapm_up_seq; | |
475 | } else if (event == SND_SOC_DAPM_STREAM_STOP) { | |
476 | c = ARRAY_SIZE(dapm_down_seq); | |
477 | seq = dapm_down_seq; | |
478 | } | |
479 | ||
480 | for(i = 0; i < c; i++) { | |
481 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
482 | ||
483 | /* is widget in stream order */ | |
484 | if (seq && seq[i] && w->id != seq[i]) | |
485 | continue; | |
486 | ||
487 | /* vmid - no action */ | |
488 | if (w->id == snd_soc_dapm_vmid) | |
489 | continue; | |
490 | ||
491 | /* active ADC */ | |
492 | if (w->id == snd_soc_dapm_adc && w->active) { | |
493 | in = is_connected_input_ep(w); | |
494 | dapm_clear_walk(w->codec); | |
495 | w->power = (in != 0) ? 1 : 0; | |
496 | dapm_update_bits(w); | |
497 | continue; | |
498 | } | |
499 | ||
500 | /* active DAC */ | |
501 | if (w->id == snd_soc_dapm_dac && w->active) { | |
502 | out = is_connected_output_ep(w); | |
503 | dapm_clear_walk(w->codec); | |
504 | w->power = (out != 0) ? 1 : 0; | |
505 | dapm_update_bits(w); | |
506 | continue; | |
507 | } | |
508 | ||
509 | /* programmable gain/attenuation */ | |
510 | if (w->id == snd_soc_dapm_pga) { | |
511 | int on; | |
512 | in = is_connected_input_ep(w); | |
513 | dapm_clear_walk(w->codec); | |
514 | out = is_connected_output_ep(w); | |
515 | dapm_clear_walk(w->codec); | |
516 | w->power = on = (out != 0 && in != 0) ? 1 : 0; | |
517 | ||
518 | if (!on) | |
519 | dapm_set_pga(w, on); /* lower volume to reduce pops */ | |
520 | dapm_update_bits(w); | |
521 | if (on) | |
522 | dapm_set_pga(w, on); /* restore volume from zero */ | |
523 | ||
524 | continue; | |
525 | } | |
526 | ||
527 | /* pre and post event widgets */ | |
528 | if (w->id == snd_soc_dapm_pre) { | |
529 | if (!w->event) | |
530 | continue; | |
531 | ||
532 | if (event == SND_SOC_DAPM_STREAM_START) { | |
533 | ret = w->event(w, SND_SOC_DAPM_PRE_PMU); | |
534 | if (ret < 0) | |
535 | return ret; | |
536 | } else if (event == SND_SOC_DAPM_STREAM_STOP) { | |
537 | ret = w->event(w, SND_SOC_DAPM_PRE_PMD); | |
538 | if (ret < 0) | |
539 | return ret; | |
540 | } | |
541 | continue; | |
542 | } | |
543 | if (w->id == snd_soc_dapm_post) { | |
544 | if (!w->event) | |
545 | continue; | |
546 | ||
547 | if (event == SND_SOC_DAPM_STREAM_START) { | |
548 | ret = w->event(w, SND_SOC_DAPM_POST_PMU); | |
549 | if (ret < 0) | |
550 | return ret; | |
551 | } else if (event == SND_SOC_DAPM_STREAM_STOP) { | |
552 | ret = w->event(w, SND_SOC_DAPM_POST_PMD); | |
553 | if (ret < 0) | |
554 | return ret; | |
555 | } | |
556 | continue; | |
557 | } | |
558 | ||
559 | /* all other widgets */ | |
560 | in = is_connected_input_ep(w); | |
561 | dapm_clear_walk(w->codec); | |
562 | out = is_connected_output_ep(w); | |
563 | dapm_clear_walk(w->codec); | |
564 | power = (out != 0 && in != 0) ? 1 : 0; | |
565 | power_change = (w->power == power) ? 0: 1; | |
566 | w->power = power; | |
567 | ||
568 | /* call any power change event handlers */ | |
569 | if (power_change) { | |
570 | if (w->event) { | |
571 | dbg("power %s event for %s flags %x\n", | |
572 | w->power ? "on" : "off", w->name, w->event_flags); | |
573 | if (power) { | |
574 | /* power up event */ | |
575 | if (w->event_flags & SND_SOC_DAPM_PRE_PMU) { | |
576 | ret = w->event(w, SND_SOC_DAPM_PRE_PMU); | |
577 | if (ret < 0) | |
578 | return ret; | |
579 | } | |
580 | dapm_update_bits(w); | |
581 | if (w->event_flags & SND_SOC_DAPM_POST_PMU){ | |
582 | ret = w->event(w, SND_SOC_DAPM_POST_PMU); | |
583 | if (ret < 0) | |
584 | return ret; | |
585 | } | |
586 | } else { | |
587 | /* power down event */ | |
588 | if (w->event_flags & SND_SOC_DAPM_PRE_PMD) { | |
589 | ret = w->event(w, SND_SOC_DAPM_PRE_PMD); | |
590 | if (ret < 0) | |
591 | return ret; | |
592 | } | |
593 | dapm_update_bits(w); | |
594 | if (w->event_flags & SND_SOC_DAPM_POST_PMD) { | |
595 | ret = w->event(w, SND_SOC_DAPM_POST_PMD); | |
596 | if (ret < 0) | |
597 | return ret; | |
598 | } | |
599 | } | |
600 | } else | |
601 | /* no event handler */ | |
602 | dapm_update_bits(w); | |
603 | } | |
604 | } | |
605 | } | |
606 | ||
607 | return ret; | |
608 | } | |
609 | ||
610 | #if DAPM_DEBUG | |
611 | static void dbg_dump_dapm(struct snd_soc_codec* codec, const char *action) | |
612 | { | |
613 | struct snd_soc_dapm_widget *w; | |
614 | struct snd_soc_dapm_path *p = NULL; | |
615 | int in, out; | |
616 | ||
617 | printk("DAPM %s %s\n", codec->name, action); | |
618 | ||
619 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
620 | ||
621 | /* only display widgets that effect routing */ | |
622 | switch (w->id) { | |
623 | case snd_soc_dapm_pre: | |
624 | case snd_soc_dapm_post: | |
625 | case snd_soc_dapm_vmid: | |
626 | continue; | |
627 | case snd_soc_dapm_mux: | |
628 | case snd_soc_dapm_output: | |
629 | case snd_soc_dapm_input: | |
630 | case snd_soc_dapm_switch: | |
631 | case snd_soc_dapm_hp: | |
632 | case snd_soc_dapm_mic: | |
633 | case snd_soc_dapm_spk: | |
634 | case snd_soc_dapm_line: | |
635 | case snd_soc_dapm_micbias: | |
636 | case snd_soc_dapm_dac: | |
637 | case snd_soc_dapm_adc: | |
638 | case snd_soc_dapm_pga: | |
639 | case snd_soc_dapm_mixer: | |
640 | if (w->name) { | |
641 | in = is_connected_input_ep(w); | |
642 | dapm_clear_walk(w->codec); | |
643 | out = is_connected_output_ep(w); | |
644 | dapm_clear_walk(w->codec); | |
645 | printk("%s: %s in %d out %d\n", w->name, | |
646 | w->power ? "On":"Off",in, out); | |
647 | ||
648 | list_for_each_entry(p, &w->sources, list_sink) { | |
649 | if (p->connect) | |
650 | printk(" in %s %s\n", p->name ? p->name : "static", | |
651 | p->source->name); | |
652 | } | |
653 | list_for_each_entry(p, &w->sinks, list_source) { | |
2b97eabc RP |
654 | if (p->connect) |
655 | printk(" out %s %s\n", p->name ? p->name : "static", | |
656 | p->sink->name); | |
657 | } | |
658 | } | |
659 | break; | |
660 | } | |
661 | } | |
662 | } | |
663 | #endif | |
664 | ||
665 | /* test and update the power status of a mux widget */ | |
d9c96cf3 AB |
666 | static int dapm_mux_update_power(struct snd_soc_dapm_widget *widget, |
667 | struct snd_kcontrol *kcontrol, int mask, | |
668 | int val, struct soc_enum* e) | |
2b97eabc RP |
669 | { |
670 | struct snd_soc_dapm_path *path; | |
671 | int found = 0; | |
672 | ||
673 | if (widget->id != snd_soc_dapm_mux) | |
674 | return -ENODEV; | |
675 | ||
676 | if (!snd_soc_test_bits(widget->codec, e->reg, mask, val)) | |
677 | return 0; | |
678 | ||
679 | /* find dapm widget path assoc with kcontrol */ | |
680 | list_for_each_entry(path, &widget->codec->dapm_paths, list) { | |
681 | if (path->kcontrol != kcontrol) | |
682 | continue; | |
683 | ||
684 | if (!path->name || ! e->texts[val]) | |
685 | continue; | |
686 | ||
687 | found = 1; | |
688 | /* we now need to match the string in the enum to the path */ | |
689 | if (!(strcmp(path->name, e->texts[val]))) | |
690 | path->connect = 1; /* new connection */ | |
691 | else | |
692 | path->connect = 0; /* old connection must be powered down */ | |
693 | } | |
694 | ||
695 | if (found) | |
696 | dapm_power_widgets(widget->codec, SND_SOC_DAPM_STREAM_NOP); | |
697 | ||
698 | return 0; | |
699 | } | |
2b97eabc RP |
700 | |
701 | /* test and update the power status of a mixer widget */ | |
d9c96cf3 AB |
702 | static int dapm_mixer_update_power(struct snd_soc_dapm_widget *widget, |
703 | struct snd_kcontrol *kcontrol, int reg, | |
704 | int val_mask, int val, int invert) | |
2b97eabc RP |
705 | { |
706 | struct snd_soc_dapm_path *path; | |
707 | int found = 0; | |
708 | ||
709 | if (widget->id != snd_soc_dapm_mixer) | |
710 | return -ENODEV; | |
711 | ||
712 | if (!snd_soc_test_bits(widget->codec, reg, val_mask, val)) | |
713 | return 0; | |
714 | ||
715 | /* find dapm widget path assoc with kcontrol */ | |
716 | list_for_each_entry(path, &widget->codec->dapm_paths, list) { | |
717 | if (path->kcontrol != kcontrol) | |
718 | continue; | |
719 | ||
720 | /* found, now check type */ | |
721 | found = 1; | |
722 | if (val) | |
723 | /* new connection */ | |
724 | path->connect = invert ? 0:1; | |
725 | else | |
726 | /* old connection must be powered down */ | |
727 | path->connect = invert ? 1:0; | |
728 | break; | |
729 | } | |
730 | ||
731 | if (found) | |
732 | dapm_power_widgets(widget->codec, SND_SOC_DAPM_STREAM_NOP); | |
733 | ||
734 | return 0; | |
735 | } | |
2b97eabc RP |
736 | |
737 | /* show dapm widget status in sys fs */ | |
738 | static ssize_t dapm_widget_show(struct device *dev, | |
739 | struct device_attribute *attr, char *buf) | |
740 | { | |
741 | struct snd_soc_device *devdata = dev_get_drvdata(dev); | |
742 | struct snd_soc_codec *codec = devdata->codec; | |
743 | struct snd_soc_dapm_widget *w; | |
744 | int count = 0; | |
745 | char *state = "not set"; | |
746 | ||
747 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
748 | ||
749 | /* only display widgets that burnm power */ | |
750 | switch (w->id) { | |
751 | case snd_soc_dapm_hp: | |
752 | case snd_soc_dapm_mic: | |
753 | case snd_soc_dapm_spk: | |
754 | case snd_soc_dapm_line: | |
755 | case snd_soc_dapm_micbias: | |
756 | case snd_soc_dapm_dac: | |
757 | case snd_soc_dapm_adc: | |
758 | case snd_soc_dapm_pga: | |
759 | case snd_soc_dapm_mixer: | |
760 | if (w->name) | |
761 | count += sprintf(buf + count, "%s: %s\n", | |
762 | w->name, w->power ? "On":"Off"); | |
763 | break; | |
764 | default: | |
765 | break; | |
766 | } | |
767 | } | |
768 | ||
769 | switch(codec->dapm_state){ | |
770 | case SNDRV_CTL_POWER_D0: | |
771 | state = "D0"; | |
772 | break; | |
773 | case SNDRV_CTL_POWER_D1: | |
774 | state = "D1"; | |
775 | break; | |
776 | case SNDRV_CTL_POWER_D2: | |
777 | state = "D2"; | |
778 | break; | |
779 | case SNDRV_CTL_POWER_D3hot: | |
780 | state = "D3hot"; | |
781 | break; | |
782 | case SNDRV_CTL_POWER_D3cold: | |
783 | state = "D3cold"; | |
784 | break; | |
785 | } | |
786 | count += sprintf(buf + count, "PM State: %s\n", state); | |
787 | ||
788 | return count; | |
789 | } | |
790 | ||
791 | static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL); | |
792 | ||
793 | int snd_soc_dapm_sys_add(struct device *dev) | |
794 | { | |
795 | int ret = 0; | |
796 | ||
797 | if (dapm_status) | |
798 | ret = device_create_file(dev, &dev_attr_dapm_widget); | |
799 | ||
800 | return ret; | |
801 | } | |
802 | ||
803 | static void snd_soc_dapm_sys_remove(struct device *dev) | |
804 | { | |
805 | if (dapm_status) | |
806 | device_remove_file(dev, &dev_attr_dapm_widget); | |
807 | } | |
808 | ||
809 | /* free all dapm widgets and resources */ | |
d9c96cf3 | 810 | static void dapm_free_widgets(struct snd_soc_codec *codec) |
2b97eabc RP |
811 | { |
812 | struct snd_soc_dapm_widget *w, *next_w; | |
813 | struct snd_soc_dapm_path *p, *next_p; | |
814 | ||
815 | list_for_each_entry_safe(w, next_w, &codec->dapm_widgets, list) { | |
816 | list_del(&w->list); | |
817 | kfree(w); | |
818 | } | |
819 | ||
820 | list_for_each_entry_safe(p, next_p, &codec->dapm_paths, list) { | |
821 | list_del(&p->list); | |
822 | kfree(p->long_name); | |
823 | kfree(p); | |
824 | } | |
825 | } | |
826 | ||
827 | /** | |
828 | * snd_soc_dapm_sync_endpoints - scan and power dapm paths | |
829 | * @codec: audio codec | |
830 | * | |
831 | * Walks all dapm audio paths and powers widgets according to their | |
832 | * stream or path usage. | |
833 | * | |
834 | * Returns 0 for success. | |
835 | */ | |
836 | int snd_soc_dapm_sync_endpoints(struct snd_soc_codec *codec) | |
837 | { | |
838 | return dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP); | |
839 | } | |
840 | EXPORT_SYMBOL_GPL(snd_soc_dapm_sync_endpoints); | |
841 | ||
842 | /** | |
843 | * snd_soc_dapm_connect_input - connect dapm widgets | |
844 | * @codec: audio codec | |
845 | * @sink: name of target widget | |
846 | * @control: mixer control name | |
847 | * @source: name of source name | |
848 | * | |
849 | * Connects 2 dapm widgets together via a named audio path. The sink is | |
850 | * the widget receiving the audio signal, whilst the source is the sender | |
851 | * of the audio signal. | |
852 | * | |
853 | * Returns 0 for success else error. | |
854 | */ | |
855 | int snd_soc_dapm_connect_input(struct snd_soc_codec *codec, const char *sink, | |
856 | const char * control, const char *source) | |
857 | { | |
858 | struct snd_soc_dapm_path *path; | |
859 | struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w; | |
860 | int ret = 0; | |
861 | ||
862 | /* find src and dest widgets */ | |
863 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
864 | ||
865 | if (!wsink && !(strcmp(w->name, sink))) { | |
866 | wsink = w; | |
867 | continue; | |
868 | } | |
869 | if (!wsource && !(strcmp(w->name, source))) { | |
870 | wsource = w; | |
871 | } | |
872 | } | |
873 | ||
874 | if (wsource == NULL || wsink == NULL) | |
875 | return -ENODEV; | |
876 | ||
877 | path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL); | |
878 | if (!path) | |
879 | return -ENOMEM; | |
880 | ||
881 | path->source = wsource; | |
882 | path->sink = wsink; | |
883 | INIT_LIST_HEAD(&path->list); | |
884 | INIT_LIST_HEAD(&path->list_source); | |
885 | INIT_LIST_HEAD(&path->list_sink); | |
886 | ||
887 | /* check for external widgets */ | |
888 | if (wsink->id == snd_soc_dapm_input) { | |
889 | if (wsource->id == snd_soc_dapm_micbias || | |
890 | wsource->id == snd_soc_dapm_mic || | |
891 | wsink->id == snd_soc_dapm_line) | |
892 | wsink->ext = 1; | |
893 | } | |
894 | if (wsource->id == snd_soc_dapm_output) { | |
895 | if (wsink->id == snd_soc_dapm_spk || | |
896 | wsink->id == snd_soc_dapm_hp || | |
897 | wsink->id == snd_soc_dapm_line) | |
898 | wsource->ext = 1; | |
899 | } | |
900 | ||
901 | /* connect static paths */ | |
902 | if (control == NULL) { | |
903 | list_add(&path->list, &codec->dapm_paths); | |
904 | list_add(&path->list_sink, &wsink->sources); | |
905 | list_add(&path->list_source, &wsource->sinks); | |
906 | path->connect = 1; | |
907 | return 0; | |
908 | } | |
909 | ||
910 | /* connect dynamic paths */ | |
911 | switch(wsink->id) { | |
912 | case snd_soc_dapm_adc: | |
913 | case snd_soc_dapm_dac: | |
914 | case snd_soc_dapm_pga: | |
915 | case snd_soc_dapm_input: | |
916 | case snd_soc_dapm_output: | |
917 | case snd_soc_dapm_micbias: | |
918 | case snd_soc_dapm_vmid: | |
919 | case snd_soc_dapm_pre: | |
920 | case snd_soc_dapm_post: | |
921 | list_add(&path->list, &codec->dapm_paths); | |
922 | list_add(&path->list_sink, &wsink->sources); | |
923 | list_add(&path->list_source, &wsource->sinks); | |
924 | path->connect = 1; | |
925 | return 0; | |
926 | case snd_soc_dapm_mux: | |
927 | ret = dapm_connect_mux(codec, wsource, wsink, path, control, | |
928 | &wsink->kcontrols[0]); | |
929 | if (ret != 0) | |
930 | goto err; | |
931 | break; | |
932 | case snd_soc_dapm_switch: | |
933 | case snd_soc_dapm_mixer: | |
934 | ret = dapm_connect_mixer(codec, wsource, wsink, path, control); | |
935 | if (ret != 0) | |
936 | goto err; | |
937 | break; | |
938 | case snd_soc_dapm_hp: | |
939 | case snd_soc_dapm_mic: | |
940 | case snd_soc_dapm_line: | |
941 | case snd_soc_dapm_spk: | |
942 | list_add(&path->list, &codec->dapm_paths); | |
943 | list_add(&path->list_sink, &wsink->sources); | |
944 | list_add(&path->list_source, &wsource->sinks); | |
945 | path->connect = 0; | |
946 | return 0; | |
947 | } | |
948 | return 0; | |
949 | ||
950 | err: | |
951 | printk(KERN_WARNING "asoc: no dapm match for %s --> %s --> %s\n", source, | |
952 | control, sink); | |
953 | kfree(path); | |
954 | return ret; | |
955 | } | |
956 | EXPORT_SYMBOL_GPL(snd_soc_dapm_connect_input); | |
957 | ||
958 | /** | |
959 | * snd_soc_dapm_new_widgets - add new dapm widgets | |
960 | * @codec: audio codec | |
961 | * | |
962 | * Checks the codec for any new dapm widgets and creates them if found. | |
963 | * | |
964 | * Returns 0 for success. | |
965 | */ | |
966 | int snd_soc_dapm_new_widgets(struct snd_soc_codec *codec) | |
967 | { | |
968 | struct snd_soc_dapm_widget *w; | |
969 | ||
970 | mutex_lock(&codec->mutex); | |
971 | list_for_each_entry(w, &codec->dapm_widgets, list) | |
972 | { | |
973 | if (w->new) | |
974 | continue; | |
975 | ||
976 | switch(w->id) { | |
977 | case snd_soc_dapm_switch: | |
978 | case snd_soc_dapm_mixer: | |
979 | dapm_new_mixer(codec, w); | |
980 | break; | |
981 | case snd_soc_dapm_mux: | |
982 | dapm_new_mux(codec, w); | |
983 | break; | |
984 | case snd_soc_dapm_adc: | |
985 | case snd_soc_dapm_dac: | |
986 | case snd_soc_dapm_pga: | |
987 | dapm_new_pga(codec, w); | |
988 | break; | |
989 | case snd_soc_dapm_input: | |
990 | case snd_soc_dapm_output: | |
991 | case snd_soc_dapm_micbias: | |
992 | case snd_soc_dapm_spk: | |
993 | case snd_soc_dapm_hp: | |
994 | case snd_soc_dapm_mic: | |
995 | case snd_soc_dapm_line: | |
996 | case snd_soc_dapm_vmid: | |
997 | case snd_soc_dapm_pre: | |
998 | case snd_soc_dapm_post: | |
999 | break; | |
1000 | } | |
1001 | w->new = 1; | |
1002 | } | |
1003 | ||
1004 | dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP); | |
1005 | mutex_unlock(&codec->mutex); | |
1006 | return 0; | |
1007 | } | |
1008 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets); | |
1009 | ||
1010 | /** | |
1011 | * snd_soc_dapm_get_volsw - dapm mixer get callback | |
1012 | * @kcontrol: mixer control | |
1013 | * @uinfo: control element information | |
1014 | * | |
1015 | * Callback to get the value of a dapm mixer control. | |
1016 | * | |
1017 | * Returns 0 for success. | |
1018 | */ | |
1019 | int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol, | |
1020 | struct snd_ctl_elem_value *ucontrol) | |
1021 | { | |
1022 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1023 | int reg = kcontrol->private_value & 0xff; | |
1024 | int shift = (kcontrol->private_value >> 8) & 0x0f; | |
1025 | int rshift = (kcontrol->private_value >> 12) & 0x0f; | |
1026 | int mask = (kcontrol->private_value >> 16) & 0xff; | |
1027 | int invert = (kcontrol->private_value >> 24) & 0x01; | |
1028 | ||
1029 | /* return the saved value if we are powered down */ | |
1030 | if (widget->id == snd_soc_dapm_pga && !widget->power) { | |
1031 | ucontrol->value.integer.value[0] = widget->saved_value; | |
1032 | return 0; | |
1033 | } | |
1034 | ||
1035 | ucontrol->value.integer.value[0] = | |
1036 | (snd_soc_read(widget->codec, reg) >> shift) & mask; | |
1037 | if (shift != rshift) | |
1038 | ucontrol->value.integer.value[1] = | |
1039 | (snd_soc_read(widget->codec, reg) >> rshift) & mask; | |
1040 | if (invert) { | |
1041 | ucontrol->value.integer.value[0] = | |
1042 | mask - ucontrol->value.integer.value[0]; | |
1043 | if (shift != rshift) | |
1044 | ucontrol->value.integer.value[1] = | |
1045 | mask - ucontrol->value.integer.value[1]; | |
1046 | } | |
1047 | ||
1048 | return 0; | |
1049 | } | |
1050 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw); | |
1051 | ||
1052 | /** | |
1053 | * snd_soc_dapm_put_volsw - dapm mixer set callback | |
1054 | * @kcontrol: mixer control | |
1055 | * @uinfo: control element information | |
1056 | * | |
1057 | * Callback to set the value of a dapm mixer control. | |
1058 | * | |
1059 | * Returns 0 for success. | |
1060 | */ | |
1061 | int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, | |
1062 | struct snd_ctl_elem_value *ucontrol) | |
1063 | { | |
1064 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1065 | int reg = kcontrol->private_value & 0xff; | |
1066 | int shift = (kcontrol->private_value >> 8) & 0x0f; | |
1067 | int rshift = (kcontrol->private_value >> 12) & 0x0f; | |
1068 | int mask = (kcontrol->private_value >> 16) & 0xff; | |
1069 | int invert = (kcontrol->private_value >> 24) & 0x01; | |
1070 | unsigned short val, val2, val_mask; | |
1071 | int ret; | |
1072 | ||
1073 | val = (ucontrol->value.integer.value[0] & mask); | |
1074 | ||
1075 | if (invert) | |
1076 | val = mask - val; | |
1077 | val_mask = mask << shift; | |
1078 | val = val << shift; | |
1079 | if (shift != rshift) { | |
1080 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1081 | if (invert) | |
1082 | val2 = mask - val2; | |
1083 | val_mask |= mask << rshift; | |
1084 | val |= val2 << rshift; | |
1085 | } | |
1086 | ||
1087 | mutex_lock(&widget->codec->mutex); | |
1088 | widget->value = val; | |
1089 | ||
1090 | /* save volume value if the widget is powered down */ | |
1091 | if (widget->id == snd_soc_dapm_pga && !widget->power) { | |
1092 | widget->saved_value = val; | |
1093 | mutex_unlock(&widget->codec->mutex); | |
1094 | return 1; | |
1095 | } | |
1096 | ||
1097 | dapm_mixer_update_power(widget, kcontrol, reg, val_mask, val, invert); | |
1098 | if (widget->event) { | |
1099 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
1100 | ret = widget->event(widget, SND_SOC_DAPM_PRE_REG); | |
1101 | if (ret < 0) | |
1102 | goto out; | |
1103 | } | |
1104 | ret = snd_soc_update_bits(widget->codec, reg, val_mask, val); | |
1105 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
1106 | ret = widget->event(widget, SND_SOC_DAPM_POST_REG); | |
1107 | } else | |
1108 | ret = snd_soc_update_bits(widget->codec, reg, val_mask, val); | |
1109 | ||
1110 | out: | |
1111 | mutex_unlock(&widget->codec->mutex); | |
1112 | return ret; | |
1113 | } | |
1114 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw); | |
1115 | ||
1116 | /** | |
1117 | * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback | |
1118 | * @kcontrol: mixer control | |
1119 | * @uinfo: control element information | |
1120 | * | |
1121 | * Callback to get the value of a dapm enumerated double mixer control. | |
1122 | * | |
1123 | * Returns 0 for success. | |
1124 | */ | |
1125 | int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol, | |
1126 | struct snd_ctl_elem_value *ucontrol) | |
1127 | { | |
1128 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1129 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1130 | unsigned short val, bitmask; | |
1131 | ||
1132 | for (bitmask = 1; bitmask < e->mask; bitmask <<= 1) | |
1133 | ; | |
1134 | val = snd_soc_read(widget->codec, e->reg); | |
1135 | ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1); | |
1136 | if (e->shift_l != e->shift_r) | |
1137 | ucontrol->value.enumerated.item[1] = | |
1138 | (val >> e->shift_r) & (bitmask - 1); | |
1139 | ||
1140 | return 0; | |
1141 | } | |
1142 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double); | |
1143 | ||
1144 | /** | |
1145 | * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback | |
1146 | * @kcontrol: mixer control | |
1147 | * @uinfo: control element information | |
1148 | * | |
1149 | * Callback to set the value of a dapm enumerated double mixer control. | |
1150 | * | |
1151 | * Returns 0 for success. | |
1152 | */ | |
1153 | int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, | |
1154 | struct snd_ctl_elem_value *ucontrol) | |
1155 | { | |
1156 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1157 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1158 | unsigned short val, mux; | |
1159 | unsigned short mask, bitmask; | |
1160 | int ret = 0; | |
1161 | ||
1162 | for (bitmask = 1; bitmask < e->mask; bitmask <<= 1) | |
1163 | ; | |
1164 | if (ucontrol->value.enumerated.item[0] > e->mask - 1) | |
1165 | return -EINVAL; | |
1166 | mux = ucontrol->value.enumerated.item[0]; | |
1167 | val = mux << e->shift_l; | |
1168 | mask = (bitmask - 1) << e->shift_l; | |
1169 | if (e->shift_l != e->shift_r) { | |
1170 | if (ucontrol->value.enumerated.item[1] > e->mask - 1) | |
1171 | return -EINVAL; | |
1172 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
1173 | mask |= (bitmask - 1) << e->shift_r; | |
1174 | } | |
1175 | ||
1176 | mutex_lock(&widget->codec->mutex); | |
1177 | widget->value = val; | |
1178 | dapm_mux_update_power(widget, kcontrol, mask, mux, e); | |
1179 | if (widget->event) { | |
1180 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
1181 | ret = widget->event(widget, SND_SOC_DAPM_PRE_REG); | |
1182 | if (ret < 0) | |
1183 | goto out; | |
1184 | } | |
1185 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1186 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
1187 | ret = widget->event(widget, SND_SOC_DAPM_POST_REG); | |
1188 | } else | |
1189 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1190 | ||
1191 | out: | |
1192 | mutex_unlock(&widget->codec->mutex); | |
1193 | return ret; | |
1194 | } | |
1195 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double); | |
1196 | ||
1197 | /** | |
1198 | * snd_soc_dapm_new_control - create new dapm control | |
1199 | * @codec: audio codec | |
1200 | * @widget: widget template | |
1201 | * | |
1202 | * Creates a new dapm control based upon the template. | |
1203 | * | |
1204 | * Returns 0 for success else error. | |
1205 | */ | |
1206 | int snd_soc_dapm_new_control(struct snd_soc_codec *codec, | |
1207 | const struct snd_soc_dapm_widget *widget) | |
1208 | { | |
1209 | struct snd_soc_dapm_widget *w; | |
1210 | ||
1211 | if ((w = dapm_cnew_widget(widget)) == NULL) | |
1212 | return -ENOMEM; | |
1213 | ||
1214 | w->codec = codec; | |
1215 | INIT_LIST_HEAD(&w->sources); | |
1216 | INIT_LIST_HEAD(&w->sinks); | |
1217 | INIT_LIST_HEAD(&w->list); | |
1218 | list_add(&w->list, &codec->dapm_widgets); | |
1219 | ||
1220 | /* machine layer set ups unconnected pins and insertions */ | |
1221 | w->connected = 1; | |
1222 | return 0; | |
1223 | } | |
1224 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control); | |
1225 | ||
1226 | /** | |
1227 | * snd_soc_dapm_stream_event - send a stream event to the dapm core | |
1228 | * @codec: audio codec | |
1229 | * @stream: stream name | |
1230 | * @event: stream event | |
1231 | * | |
1232 | * Sends a stream event to the dapm core. The core then makes any | |
1233 | * necessary widget power changes. | |
1234 | * | |
1235 | * Returns 0 for success else error. | |
1236 | */ | |
1237 | int snd_soc_dapm_stream_event(struct snd_soc_codec *codec, | |
1238 | char *stream, int event) | |
1239 | { | |
1240 | struct snd_soc_dapm_widget *w; | |
1241 | ||
11da21a7 SF |
1242 | if (stream == NULL) |
1243 | return 0; | |
1244 | ||
2b97eabc RP |
1245 | mutex_lock(&codec->mutex); |
1246 | list_for_each_entry(w, &codec->dapm_widgets, list) | |
1247 | { | |
1248 | if (!w->sname) | |
1249 | continue; | |
1250 | dbg("widget %s\n %s stream %s event %d\n", w->name, w->sname, | |
1251 | stream, event); | |
1252 | if (strstr(w->sname, stream)) { | |
1253 | switch(event) { | |
1254 | case SND_SOC_DAPM_STREAM_START: | |
1255 | w->active = 1; | |
1256 | break; | |
1257 | case SND_SOC_DAPM_STREAM_STOP: | |
1258 | w->active = 0; | |
1259 | break; | |
1260 | case SND_SOC_DAPM_STREAM_SUSPEND: | |
1261 | if (w->active) | |
1262 | w->suspend = 1; | |
1263 | w->active = 0; | |
1264 | break; | |
1265 | case SND_SOC_DAPM_STREAM_RESUME: | |
1266 | if (w->suspend) { | |
1267 | w->active = 1; | |
1268 | w->suspend = 0; | |
1269 | } | |
1270 | break; | |
1271 | case SND_SOC_DAPM_STREAM_PAUSE_PUSH: | |
1272 | break; | |
1273 | case SND_SOC_DAPM_STREAM_PAUSE_RELEASE: | |
1274 | break; | |
1275 | } | |
1276 | } | |
1277 | } | |
1278 | mutex_unlock(&codec->mutex); | |
1279 | ||
1280 | dapm_power_widgets(codec, event); | |
1281 | dump_dapm(codec, __FUNCTION__); | |
1282 | return 0; | |
1283 | } | |
1284 | EXPORT_SYMBOL_GPL(snd_soc_dapm_stream_event); | |
1285 | ||
1286 | /** | |
1287 | * snd_soc_dapm_set_endpoint - set audio endpoint status | |
1288 | * @codec: audio codec | |
1289 | * @endpoint: audio signal endpoint (or start point) | |
1290 | * @status: point status | |
1291 | * | |
1292 | * Set audio endpoint status - connected or disconnected. | |
1293 | * | |
1294 | * Returns 0 for success else error. | |
1295 | */ | |
1296 | int snd_soc_dapm_set_endpoint(struct snd_soc_codec *codec, | |
1297 | char *endpoint, int status) | |
1298 | { | |
1299 | struct snd_soc_dapm_widget *w; | |
1300 | ||
1301 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
1302 | if (!strcmp(w->name, endpoint)) { | |
1303 | w->connected = status; | |
1304 | } | |
1305 | } | |
1306 | ||
1307 | return 0; | |
1308 | } | |
1309 | EXPORT_SYMBOL_GPL(snd_soc_dapm_set_endpoint); | |
1310 | ||
1311 | /** | |
1312 | * snd_soc_dapm_free - free dapm resources | |
1313 | * @socdev: SoC device | |
1314 | * | |
1315 | * Free all dapm widgets and resources. | |
1316 | */ | |
1317 | void snd_soc_dapm_free(struct snd_soc_device *socdev) | |
1318 | { | |
1319 | struct snd_soc_codec *codec = socdev->codec; | |
1320 | ||
1321 | snd_soc_dapm_sys_remove(socdev->dev); | |
1322 | dapm_free_widgets(codec); | |
1323 | } | |
1324 | EXPORT_SYMBOL_GPL(snd_soc_dapm_free); | |
1325 | ||
1326 | /* Module information */ | |
1327 | MODULE_AUTHOR("Liam Girdwood, liam.girdwood@wolfsonmicro.com, www.wolfsonmicro.com"); | |
1328 | MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC"); | |
1329 | MODULE_LICENSE("GPL"); |