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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 */ | |
88cb4290 | 90 | static inline struct snd_soc_dapm_widget *dapm_cnew_widget( |
2b97eabc RP |
91 | const struct snd_soc_dapm_widget *_widget) |
92 | { | |
88cb4290 | 93 | return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL); |
2b97eabc RP |
94 | } |
95 | ||
96 | /* set up initial codec paths */ | |
97 | static void dapm_set_path_status(struct snd_soc_dapm_widget *w, | |
98 | struct snd_soc_dapm_path *p, int i) | |
99 | { | |
100 | switch (w->id) { | |
101 | case snd_soc_dapm_switch: | |
102 | case snd_soc_dapm_mixer: { | |
103 | int val; | |
104 | int reg = w->kcontrols[i].private_value & 0xff; | |
105 | int shift = (w->kcontrols[i].private_value >> 8) & 0x0f; | |
106 | int mask = (w->kcontrols[i].private_value >> 16) & 0xff; | |
107 | int invert = (w->kcontrols[i].private_value >> 24) & 0x01; | |
108 | ||
109 | val = snd_soc_read(w->codec, reg); | |
110 | val = (val >> shift) & mask; | |
111 | ||
112 | if ((invert && !val) || (!invert && val)) | |
113 | p->connect = 1; | |
114 | else | |
115 | p->connect = 0; | |
116 | } | |
117 | break; | |
118 | case snd_soc_dapm_mux: { | |
119 | struct soc_enum *e = (struct soc_enum *)w->kcontrols[i].private_value; | |
120 | int val, item, bitmask; | |
121 | ||
122 | for (bitmask = 1; bitmask < e->mask; bitmask <<= 1) | |
123 | ; | |
124 | val = snd_soc_read(w->codec, e->reg); | |
125 | item = (val >> e->shift_l) & (bitmask - 1); | |
126 | ||
127 | p->connect = 0; | |
128 | for (i = 0; i < e->mask; i++) { | |
129 | if (!(strcmp(p->name, e->texts[i])) && item == i) | |
130 | p->connect = 1; | |
131 | } | |
132 | } | |
133 | break; | |
134 | /* does not effect routing - always connected */ | |
135 | case snd_soc_dapm_pga: | |
136 | case snd_soc_dapm_output: | |
137 | case snd_soc_dapm_adc: | |
138 | case snd_soc_dapm_input: | |
139 | case snd_soc_dapm_dac: | |
140 | case snd_soc_dapm_micbias: | |
141 | case snd_soc_dapm_vmid: | |
142 | p->connect = 1; | |
143 | break; | |
144 | /* does effect routing - dynamically connected */ | |
145 | case snd_soc_dapm_hp: | |
146 | case snd_soc_dapm_mic: | |
147 | case snd_soc_dapm_spk: | |
148 | case snd_soc_dapm_line: | |
149 | case snd_soc_dapm_pre: | |
150 | case snd_soc_dapm_post: | |
151 | p->connect = 0; | |
152 | break; | |
153 | } | |
154 | } | |
155 | ||
156 | /* connect mux widget to it's interconnecting audio paths */ | |
157 | static int dapm_connect_mux(struct snd_soc_codec *codec, | |
158 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, | |
159 | struct snd_soc_dapm_path *path, const char *control_name, | |
160 | const struct snd_kcontrol_new *kcontrol) | |
161 | { | |
162 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
163 | int i; | |
164 | ||
165 | for (i = 0; i < e->mask; i++) { | |
166 | if (!(strcmp(control_name, e->texts[i]))) { | |
167 | list_add(&path->list, &codec->dapm_paths); | |
168 | list_add(&path->list_sink, &dest->sources); | |
169 | list_add(&path->list_source, &src->sinks); | |
170 | path->name = (char*)e->texts[i]; | |
171 | dapm_set_path_status(dest, path, 0); | |
172 | return 0; | |
173 | } | |
174 | } | |
175 | ||
176 | return -ENODEV; | |
177 | } | |
178 | ||
179 | /* connect mixer widget to it's interconnecting audio paths */ | |
180 | static int dapm_connect_mixer(struct snd_soc_codec *codec, | |
181 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, | |
182 | struct snd_soc_dapm_path *path, const char *control_name) | |
183 | { | |
184 | int i; | |
185 | ||
186 | /* search for mixer kcontrol */ | |
187 | for (i = 0; i < dest->num_kcontrols; i++) { | |
188 | if (!strcmp(control_name, dest->kcontrols[i].name)) { | |
189 | list_add(&path->list, &codec->dapm_paths); | |
190 | list_add(&path->list_sink, &dest->sources); | |
191 | list_add(&path->list_source, &src->sinks); | |
192 | path->name = dest->kcontrols[i].name; | |
193 | dapm_set_path_status(dest, path, i); | |
194 | return 0; | |
195 | } | |
196 | } | |
197 | return -ENODEV; | |
198 | } | |
199 | ||
200 | /* update dapm codec register bits */ | |
201 | static int dapm_update_bits(struct snd_soc_dapm_widget *widget) | |
202 | { | |
203 | int change, power; | |
204 | unsigned short old, new; | |
205 | struct snd_soc_codec *codec = widget->codec; | |
206 | ||
207 | /* check for valid widgets */ | |
208 | if (widget->reg < 0 || widget->id == snd_soc_dapm_input || | |
209 | widget->id == snd_soc_dapm_output || | |
210 | widget->id == snd_soc_dapm_hp || | |
211 | widget->id == snd_soc_dapm_mic || | |
212 | widget->id == snd_soc_dapm_line || | |
213 | widget->id == snd_soc_dapm_spk) | |
214 | return 0; | |
215 | ||
216 | power = widget->power; | |
217 | if (widget->invert) | |
218 | power = (power ? 0:1); | |
219 | ||
220 | old = snd_soc_read(codec, widget->reg); | |
221 | new = (old & ~(0x1 << widget->shift)) | (power << widget->shift); | |
222 | ||
223 | change = old != new; | |
224 | if (change) { | |
225 | pop_dbg("pop test %s : %s in %d ms\n", widget->name, | |
226 | widget->power ? "on" : "off", POP_TIME); | |
227 | snd_soc_write(codec, widget->reg, new); | |
228 | pop_wait(POP_TIME); | |
229 | } | |
230 | dbg("reg old %x new %x change %d\n", old, new, change); | |
231 | return change; | |
232 | } | |
233 | ||
234 | /* ramps the volume up or down to minimise pops before or after a | |
235 | * DAPM power event */ | |
236 | static int dapm_set_pga(struct snd_soc_dapm_widget *widget, int power) | |
237 | { | |
238 | const struct snd_kcontrol_new *k = widget->kcontrols; | |
239 | ||
240 | if (widget->muted && !power) | |
241 | return 0; | |
242 | if (!widget->muted && power) | |
243 | return 0; | |
244 | ||
245 | if (widget->num_kcontrols && k) { | |
246 | int reg = k->private_value & 0xff; | |
247 | int shift = (k->private_value >> 8) & 0x0f; | |
248 | int mask = (k->private_value >> 16) & 0xff; | |
249 | int invert = (k->private_value >> 24) & 0x01; | |
250 | ||
251 | if (power) { | |
252 | int i; | |
253 | /* power up has happended, increase volume to last level */ | |
254 | if (invert) { | |
255 | for (i = mask; i > widget->saved_value; i--) | |
256 | snd_soc_update_bits(widget->codec, reg, mask, i); | |
257 | } else { | |
258 | for (i = 0; i < widget->saved_value; i++) | |
259 | snd_soc_update_bits(widget->codec, reg, mask, i); | |
260 | } | |
261 | widget->muted = 0; | |
262 | } else { | |
263 | /* power down is about to occur, decrease volume to mute */ | |
264 | int val = snd_soc_read(widget->codec, reg); | |
265 | int i = widget->saved_value = (val >> shift) & mask; | |
266 | if (invert) { | |
267 | for (; i < mask; i++) | |
268 | snd_soc_update_bits(widget->codec, reg, mask, i); | |
269 | } else { | |
270 | for (; i > 0; i--) | |
271 | snd_soc_update_bits(widget->codec, reg, mask, i); | |
272 | } | |
273 | widget->muted = 1; | |
274 | } | |
275 | } | |
276 | return 0; | |
277 | } | |
278 | ||
279 | /* create new dapm mixer control */ | |
280 | static int dapm_new_mixer(struct snd_soc_codec *codec, | |
281 | struct snd_soc_dapm_widget *w) | |
282 | { | |
283 | int i, ret = 0; | |
284 | char name[32]; | |
285 | struct snd_soc_dapm_path *path; | |
286 | ||
287 | /* add kcontrol */ | |
288 | for (i = 0; i < w->num_kcontrols; i++) { | |
289 | ||
290 | /* match name */ | |
291 | list_for_each_entry(path, &w->sources, list_sink) { | |
292 | ||
293 | /* mixer/mux paths name must match control name */ | |
294 | if (path->name != (char*)w->kcontrols[i].name) | |
295 | continue; | |
296 | ||
297 | /* add dapm control with long name */ | |
298 | snprintf(name, 32, "%s %s", w->name, w->kcontrols[i].name); | |
299 | path->long_name = kstrdup (name, GFP_KERNEL); | |
300 | if (path->long_name == NULL) | |
301 | return -ENOMEM; | |
302 | ||
303 | path->kcontrol = snd_soc_cnew(&w->kcontrols[i], w, | |
304 | path->long_name); | |
305 | ret = snd_ctl_add(codec->card, path->kcontrol); | |
306 | if (ret < 0) { | |
307 | printk(KERN_ERR "asoc: failed to add dapm kcontrol %s\n", | |
308 | path->long_name); | |
309 | kfree(path->long_name); | |
310 | path->long_name = NULL; | |
311 | return ret; | |
312 | } | |
313 | } | |
314 | } | |
315 | return ret; | |
316 | } | |
317 | ||
318 | /* create new dapm mux control */ | |
319 | static int dapm_new_mux(struct snd_soc_codec *codec, | |
320 | struct snd_soc_dapm_widget *w) | |
321 | { | |
322 | struct snd_soc_dapm_path *path = NULL; | |
323 | struct snd_kcontrol *kcontrol; | |
324 | int ret = 0; | |
325 | ||
326 | if (!w->num_kcontrols) { | |
327 | printk(KERN_ERR "asoc: mux %s has no controls\n", w->name); | |
328 | return -EINVAL; | |
329 | } | |
330 | ||
331 | kcontrol = snd_soc_cnew(&w->kcontrols[0], w, w->name); | |
332 | ret = snd_ctl_add(codec->card, kcontrol); | |
333 | if (ret < 0) | |
334 | goto err; | |
335 | ||
336 | list_for_each_entry(path, &w->sources, list_sink) | |
337 | path->kcontrol = kcontrol; | |
338 | ||
339 | return ret; | |
340 | ||
341 | err: | |
342 | printk(KERN_ERR "asoc: failed to add kcontrol %s\n", w->name); | |
343 | return ret; | |
344 | } | |
345 | ||
346 | /* create new dapm volume control */ | |
347 | static int dapm_new_pga(struct snd_soc_codec *codec, | |
348 | struct snd_soc_dapm_widget *w) | |
349 | { | |
350 | struct snd_kcontrol *kcontrol; | |
351 | int ret = 0; | |
352 | ||
353 | if (!w->num_kcontrols) | |
354 | return -EINVAL; | |
355 | ||
356 | kcontrol = snd_soc_cnew(&w->kcontrols[0], w, w->name); | |
357 | ret = snd_ctl_add(codec->card, kcontrol); | |
358 | if (ret < 0) { | |
359 | printk(KERN_ERR "asoc: failed to add kcontrol %s\n", w->name); | |
360 | return ret; | |
361 | } | |
362 | ||
363 | return ret; | |
364 | } | |
365 | ||
366 | /* reset 'walked' bit for each dapm path */ | |
367 | static inline void dapm_clear_walk(struct snd_soc_codec *codec) | |
368 | { | |
369 | struct snd_soc_dapm_path *p; | |
370 | ||
371 | list_for_each_entry(p, &codec->dapm_paths, list) | |
372 | p->walked = 0; | |
373 | } | |
374 | ||
375 | /* | |
376 | * Recursively check for a completed path to an active or physically connected | |
377 | * output widget. Returns number of complete paths. | |
378 | */ | |
379 | static int is_connected_output_ep(struct snd_soc_dapm_widget *widget) | |
380 | { | |
381 | struct snd_soc_dapm_path *path; | |
382 | int con = 0; | |
383 | ||
384 | if (widget->id == snd_soc_dapm_adc && widget->active) | |
385 | return 1; | |
386 | ||
387 | if (widget->connected) { | |
388 | /* connected pin ? */ | |
389 | if (widget->id == snd_soc_dapm_output && !widget->ext) | |
390 | return 1; | |
391 | ||
392 | /* connected jack or spk ? */ | |
393 | if (widget->id == snd_soc_dapm_hp || widget->id == snd_soc_dapm_spk || | |
394 | widget->id == snd_soc_dapm_line) | |
395 | return 1; | |
396 | } | |
397 | ||
398 | list_for_each_entry(path, &widget->sinks, list_source) { | |
399 | if (path->walked) | |
400 | continue; | |
401 | ||
402 | if (path->sink && path->connect) { | |
403 | path->walked = 1; | |
404 | con += is_connected_output_ep(path->sink); | |
405 | } | |
406 | } | |
407 | ||
408 | return con; | |
409 | } | |
410 | ||
411 | /* | |
412 | * Recursively check for a completed path to an active or physically connected | |
413 | * input widget. Returns number of complete paths. | |
414 | */ | |
415 | static int is_connected_input_ep(struct snd_soc_dapm_widget *widget) | |
416 | { | |
417 | struct snd_soc_dapm_path *path; | |
418 | int con = 0; | |
419 | ||
420 | /* active stream ? */ | |
421 | if (widget->id == snd_soc_dapm_dac && widget->active) | |
422 | return 1; | |
423 | ||
424 | if (widget->connected) { | |
425 | /* connected pin ? */ | |
426 | if (widget->id == snd_soc_dapm_input && !widget->ext) | |
427 | return 1; | |
428 | ||
429 | /* connected VMID/Bias for lower pops */ | |
430 | if (widget->id == snd_soc_dapm_vmid) | |
431 | return 1; | |
432 | ||
433 | /* connected jack ? */ | |
434 | if (widget->id == snd_soc_dapm_mic || widget->id == snd_soc_dapm_line) | |
435 | return 1; | |
436 | } | |
437 | ||
438 | list_for_each_entry(path, &widget->sources, list_sink) { | |
439 | if (path->walked) | |
440 | continue; | |
441 | ||
442 | if (path->source && path->connect) { | |
443 | path->walked = 1; | |
444 | con += is_connected_input_ep(path->source); | |
445 | } | |
446 | } | |
447 | ||
448 | return con; | |
449 | } | |
450 | ||
451 | /* | |
452 | * Scan each dapm widget for complete audio path. | |
453 | * A complete path is a route that has valid endpoints i.e.:- | |
454 | * | |
455 | * o DAC to output pin. | |
456 | * o Input Pin to ADC. | |
457 | * o Input pin to Output pin (bypass, sidetone) | |
458 | * o DAC to ADC (loopback). | |
459 | */ | |
d9c96cf3 | 460 | static int dapm_power_widgets(struct snd_soc_codec *codec, int event) |
2b97eabc RP |
461 | { |
462 | struct snd_soc_dapm_widget *w; | |
463 | int in, out, i, c = 1, *seq = NULL, ret = 0, power_change, power; | |
464 | ||
465 | /* do we have a sequenced stream event */ | |
466 | if (event == SND_SOC_DAPM_STREAM_START) { | |
467 | c = ARRAY_SIZE(dapm_up_seq); | |
468 | seq = dapm_up_seq; | |
469 | } else if (event == SND_SOC_DAPM_STREAM_STOP) { | |
470 | c = ARRAY_SIZE(dapm_down_seq); | |
471 | seq = dapm_down_seq; | |
472 | } | |
473 | ||
474 | for(i = 0; i < c; i++) { | |
475 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
476 | ||
477 | /* is widget in stream order */ | |
478 | if (seq && seq[i] && w->id != seq[i]) | |
479 | continue; | |
480 | ||
481 | /* vmid - no action */ | |
482 | if (w->id == snd_soc_dapm_vmid) | |
483 | continue; | |
484 | ||
485 | /* active ADC */ | |
486 | if (w->id == snd_soc_dapm_adc && w->active) { | |
487 | in = is_connected_input_ep(w); | |
488 | dapm_clear_walk(w->codec); | |
489 | w->power = (in != 0) ? 1 : 0; | |
490 | dapm_update_bits(w); | |
491 | continue; | |
492 | } | |
493 | ||
494 | /* active DAC */ | |
495 | if (w->id == snd_soc_dapm_dac && w->active) { | |
496 | out = is_connected_output_ep(w); | |
497 | dapm_clear_walk(w->codec); | |
498 | w->power = (out != 0) ? 1 : 0; | |
499 | dapm_update_bits(w); | |
500 | continue; | |
501 | } | |
502 | ||
503 | /* programmable gain/attenuation */ | |
504 | if (w->id == snd_soc_dapm_pga) { | |
505 | int on; | |
506 | in = is_connected_input_ep(w); | |
507 | dapm_clear_walk(w->codec); | |
508 | out = is_connected_output_ep(w); | |
509 | dapm_clear_walk(w->codec); | |
510 | w->power = on = (out != 0 && in != 0) ? 1 : 0; | |
511 | ||
512 | if (!on) | |
513 | dapm_set_pga(w, on); /* lower volume to reduce pops */ | |
514 | dapm_update_bits(w); | |
515 | if (on) | |
516 | dapm_set_pga(w, on); /* restore volume from zero */ | |
517 | ||
518 | continue; | |
519 | } | |
520 | ||
521 | /* pre and post event widgets */ | |
522 | if (w->id == snd_soc_dapm_pre) { | |
523 | if (!w->event) | |
524 | continue; | |
525 | ||
526 | if (event == SND_SOC_DAPM_STREAM_START) { | |
527 | ret = w->event(w, SND_SOC_DAPM_PRE_PMU); | |
528 | if (ret < 0) | |
529 | return ret; | |
530 | } else if (event == SND_SOC_DAPM_STREAM_STOP) { | |
531 | ret = w->event(w, SND_SOC_DAPM_PRE_PMD); | |
532 | if (ret < 0) | |
533 | return ret; | |
534 | } | |
535 | continue; | |
536 | } | |
537 | if (w->id == snd_soc_dapm_post) { | |
538 | if (!w->event) | |
539 | continue; | |
540 | ||
541 | if (event == SND_SOC_DAPM_STREAM_START) { | |
542 | ret = w->event(w, SND_SOC_DAPM_POST_PMU); | |
543 | if (ret < 0) | |
544 | return ret; | |
545 | } else if (event == SND_SOC_DAPM_STREAM_STOP) { | |
546 | ret = w->event(w, SND_SOC_DAPM_POST_PMD); | |
547 | if (ret < 0) | |
548 | return ret; | |
549 | } | |
550 | continue; | |
551 | } | |
552 | ||
553 | /* all other widgets */ | |
554 | in = is_connected_input_ep(w); | |
555 | dapm_clear_walk(w->codec); | |
556 | out = is_connected_output_ep(w); | |
557 | dapm_clear_walk(w->codec); | |
558 | power = (out != 0 && in != 0) ? 1 : 0; | |
559 | power_change = (w->power == power) ? 0: 1; | |
560 | w->power = power; | |
561 | ||
562 | /* call any power change event handlers */ | |
563 | if (power_change) { | |
564 | if (w->event) { | |
565 | dbg("power %s event for %s flags %x\n", | |
566 | w->power ? "on" : "off", w->name, w->event_flags); | |
567 | if (power) { | |
568 | /* power up event */ | |
569 | if (w->event_flags & SND_SOC_DAPM_PRE_PMU) { | |
570 | ret = w->event(w, SND_SOC_DAPM_PRE_PMU); | |
571 | if (ret < 0) | |
572 | return ret; | |
573 | } | |
574 | dapm_update_bits(w); | |
575 | if (w->event_flags & SND_SOC_DAPM_POST_PMU){ | |
576 | ret = w->event(w, SND_SOC_DAPM_POST_PMU); | |
577 | if (ret < 0) | |
578 | return ret; | |
579 | } | |
580 | } else { | |
581 | /* power down event */ | |
582 | if (w->event_flags & SND_SOC_DAPM_PRE_PMD) { | |
583 | ret = w->event(w, SND_SOC_DAPM_PRE_PMD); | |
584 | if (ret < 0) | |
585 | return ret; | |
586 | } | |
587 | dapm_update_bits(w); | |
588 | if (w->event_flags & SND_SOC_DAPM_POST_PMD) { | |
589 | ret = w->event(w, SND_SOC_DAPM_POST_PMD); | |
590 | if (ret < 0) | |
591 | return ret; | |
592 | } | |
593 | } | |
594 | } else | |
595 | /* no event handler */ | |
596 | dapm_update_bits(w); | |
597 | } | |
598 | } | |
599 | } | |
600 | ||
601 | return ret; | |
602 | } | |
603 | ||
604 | #if DAPM_DEBUG | |
605 | static void dbg_dump_dapm(struct snd_soc_codec* codec, const char *action) | |
606 | { | |
607 | struct snd_soc_dapm_widget *w; | |
608 | struct snd_soc_dapm_path *p = NULL; | |
609 | int in, out; | |
610 | ||
611 | printk("DAPM %s %s\n", codec->name, action); | |
612 | ||
613 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
614 | ||
615 | /* only display widgets that effect routing */ | |
616 | switch (w->id) { | |
617 | case snd_soc_dapm_pre: | |
618 | case snd_soc_dapm_post: | |
619 | case snd_soc_dapm_vmid: | |
620 | continue; | |
621 | case snd_soc_dapm_mux: | |
622 | case snd_soc_dapm_output: | |
623 | case snd_soc_dapm_input: | |
624 | case snd_soc_dapm_switch: | |
625 | case snd_soc_dapm_hp: | |
626 | case snd_soc_dapm_mic: | |
627 | case snd_soc_dapm_spk: | |
628 | case snd_soc_dapm_line: | |
629 | case snd_soc_dapm_micbias: | |
630 | case snd_soc_dapm_dac: | |
631 | case snd_soc_dapm_adc: | |
632 | case snd_soc_dapm_pga: | |
633 | case snd_soc_dapm_mixer: | |
634 | if (w->name) { | |
635 | in = is_connected_input_ep(w); | |
636 | dapm_clear_walk(w->codec); | |
637 | out = is_connected_output_ep(w); | |
638 | dapm_clear_walk(w->codec); | |
639 | printk("%s: %s in %d out %d\n", w->name, | |
640 | w->power ? "On":"Off",in, out); | |
641 | ||
642 | list_for_each_entry(p, &w->sources, list_sink) { | |
643 | if (p->connect) | |
644 | printk(" in %s %s\n", p->name ? p->name : "static", | |
645 | p->source->name); | |
646 | } | |
647 | list_for_each_entry(p, &w->sinks, list_source) { | |
2b97eabc RP |
648 | if (p->connect) |
649 | printk(" out %s %s\n", p->name ? p->name : "static", | |
650 | p->sink->name); | |
651 | } | |
652 | } | |
653 | break; | |
654 | } | |
655 | } | |
656 | } | |
657 | #endif | |
658 | ||
659 | /* test and update the power status of a mux widget */ | |
d9c96cf3 AB |
660 | static int dapm_mux_update_power(struct snd_soc_dapm_widget *widget, |
661 | struct snd_kcontrol *kcontrol, int mask, | |
662 | int val, struct soc_enum* e) | |
2b97eabc RP |
663 | { |
664 | struct snd_soc_dapm_path *path; | |
665 | int found = 0; | |
666 | ||
667 | if (widget->id != snd_soc_dapm_mux) | |
668 | return -ENODEV; | |
669 | ||
670 | if (!snd_soc_test_bits(widget->codec, e->reg, mask, val)) | |
671 | return 0; | |
672 | ||
673 | /* find dapm widget path assoc with kcontrol */ | |
674 | list_for_each_entry(path, &widget->codec->dapm_paths, list) { | |
675 | if (path->kcontrol != kcontrol) | |
676 | continue; | |
677 | ||
678 | if (!path->name || ! e->texts[val]) | |
679 | continue; | |
680 | ||
681 | found = 1; | |
682 | /* we now need to match the string in the enum to the path */ | |
683 | if (!(strcmp(path->name, e->texts[val]))) | |
684 | path->connect = 1; /* new connection */ | |
685 | else | |
686 | path->connect = 0; /* old connection must be powered down */ | |
687 | } | |
688 | ||
689 | if (found) | |
690 | dapm_power_widgets(widget->codec, SND_SOC_DAPM_STREAM_NOP); | |
691 | ||
692 | return 0; | |
693 | } | |
2b97eabc RP |
694 | |
695 | /* test and update the power status of a mixer widget */ | |
d9c96cf3 AB |
696 | static int dapm_mixer_update_power(struct snd_soc_dapm_widget *widget, |
697 | struct snd_kcontrol *kcontrol, int reg, | |
698 | int val_mask, int val, int invert) | |
2b97eabc RP |
699 | { |
700 | struct snd_soc_dapm_path *path; | |
701 | int found = 0; | |
702 | ||
703 | if (widget->id != snd_soc_dapm_mixer) | |
704 | return -ENODEV; | |
705 | ||
706 | if (!snd_soc_test_bits(widget->codec, reg, val_mask, val)) | |
707 | return 0; | |
708 | ||
709 | /* find dapm widget path assoc with kcontrol */ | |
710 | list_for_each_entry(path, &widget->codec->dapm_paths, list) { | |
711 | if (path->kcontrol != kcontrol) | |
712 | continue; | |
713 | ||
714 | /* found, now check type */ | |
715 | found = 1; | |
716 | if (val) | |
717 | /* new connection */ | |
718 | path->connect = invert ? 0:1; | |
719 | else | |
720 | /* old connection must be powered down */ | |
721 | path->connect = invert ? 1:0; | |
722 | break; | |
723 | } | |
724 | ||
725 | if (found) | |
726 | dapm_power_widgets(widget->codec, SND_SOC_DAPM_STREAM_NOP); | |
727 | ||
728 | return 0; | |
729 | } | |
2b97eabc RP |
730 | |
731 | /* show dapm widget status in sys fs */ | |
732 | static ssize_t dapm_widget_show(struct device *dev, | |
733 | struct device_attribute *attr, char *buf) | |
734 | { | |
735 | struct snd_soc_device *devdata = dev_get_drvdata(dev); | |
736 | struct snd_soc_codec *codec = devdata->codec; | |
737 | struct snd_soc_dapm_widget *w; | |
738 | int count = 0; | |
739 | char *state = "not set"; | |
740 | ||
741 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
742 | ||
743 | /* only display widgets that burnm power */ | |
744 | switch (w->id) { | |
745 | case snd_soc_dapm_hp: | |
746 | case snd_soc_dapm_mic: | |
747 | case snd_soc_dapm_spk: | |
748 | case snd_soc_dapm_line: | |
749 | case snd_soc_dapm_micbias: | |
750 | case snd_soc_dapm_dac: | |
751 | case snd_soc_dapm_adc: | |
752 | case snd_soc_dapm_pga: | |
753 | case snd_soc_dapm_mixer: | |
754 | if (w->name) | |
755 | count += sprintf(buf + count, "%s: %s\n", | |
756 | w->name, w->power ? "On":"Off"); | |
757 | break; | |
758 | default: | |
759 | break; | |
760 | } | |
761 | } | |
762 | ||
763 | switch(codec->dapm_state){ | |
764 | case SNDRV_CTL_POWER_D0: | |
765 | state = "D0"; | |
766 | break; | |
767 | case SNDRV_CTL_POWER_D1: | |
768 | state = "D1"; | |
769 | break; | |
770 | case SNDRV_CTL_POWER_D2: | |
771 | state = "D2"; | |
772 | break; | |
773 | case SNDRV_CTL_POWER_D3hot: | |
774 | state = "D3hot"; | |
775 | break; | |
776 | case SNDRV_CTL_POWER_D3cold: | |
777 | state = "D3cold"; | |
778 | break; | |
779 | } | |
780 | count += sprintf(buf + count, "PM State: %s\n", state); | |
781 | ||
782 | return count; | |
783 | } | |
784 | ||
785 | static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL); | |
786 | ||
787 | int snd_soc_dapm_sys_add(struct device *dev) | |
788 | { | |
789 | int ret = 0; | |
790 | ||
791 | if (dapm_status) | |
792 | ret = device_create_file(dev, &dev_attr_dapm_widget); | |
793 | ||
794 | return ret; | |
795 | } | |
796 | ||
797 | static void snd_soc_dapm_sys_remove(struct device *dev) | |
798 | { | |
799 | if (dapm_status) | |
800 | device_remove_file(dev, &dev_attr_dapm_widget); | |
801 | } | |
802 | ||
803 | /* free all dapm widgets and resources */ | |
d9c96cf3 | 804 | static void dapm_free_widgets(struct snd_soc_codec *codec) |
2b97eabc RP |
805 | { |
806 | struct snd_soc_dapm_widget *w, *next_w; | |
807 | struct snd_soc_dapm_path *p, *next_p; | |
808 | ||
809 | list_for_each_entry_safe(w, next_w, &codec->dapm_widgets, list) { | |
810 | list_del(&w->list); | |
811 | kfree(w); | |
812 | } | |
813 | ||
814 | list_for_each_entry_safe(p, next_p, &codec->dapm_paths, list) { | |
815 | list_del(&p->list); | |
816 | kfree(p->long_name); | |
817 | kfree(p); | |
818 | } | |
819 | } | |
820 | ||
821 | /** | |
822 | * snd_soc_dapm_sync_endpoints - scan and power dapm paths | |
823 | * @codec: audio codec | |
824 | * | |
825 | * Walks all dapm audio paths and powers widgets according to their | |
826 | * stream or path usage. | |
827 | * | |
828 | * Returns 0 for success. | |
829 | */ | |
830 | int snd_soc_dapm_sync_endpoints(struct snd_soc_codec *codec) | |
831 | { | |
832 | return dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP); | |
833 | } | |
834 | EXPORT_SYMBOL_GPL(snd_soc_dapm_sync_endpoints); | |
835 | ||
836 | /** | |
837 | * snd_soc_dapm_connect_input - connect dapm widgets | |
838 | * @codec: audio codec | |
839 | * @sink: name of target widget | |
840 | * @control: mixer control name | |
841 | * @source: name of source name | |
842 | * | |
843 | * Connects 2 dapm widgets together via a named audio path. The sink is | |
844 | * the widget receiving the audio signal, whilst the source is the sender | |
845 | * of the audio signal. | |
846 | * | |
847 | * Returns 0 for success else error. | |
848 | */ | |
849 | int snd_soc_dapm_connect_input(struct snd_soc_codec *codec, const char *sink, | |
850 | const char * control, const char *source) | |
851 | { | |
852 | struct snd_soc_dapm_path *path; | |
853 | struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w; | |
854 | int ret = 0; | |
855 | ||
856 | /* find src and dest widgets */ | |
857 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
858 | ||
859 | if (!wsink && !(strcmp(w->name, sink))) { | |
860 | wsink = w; | |
861 | continue; | |
862 | } | |
863 | if (!wsource && !(strcmp(w->name, source))) { | |
864 | wsource = w; | |
865 | } | |
866 | } | |
867 | ||
868 | if (wsource == NULL || wsink == NULL) | |
869 | return -ENODEV; | |
870 | ||
871 | path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL); | |
872 | if (!path) | |
873 | return -ENOMEM; | |
874 | ||
875 | path->source = wsource; | |
876 | path->sink = wsink; | |
877 | INIT_LIST_HEAD(&path->list); | |
878 | INIT_LIST_HEAD(&path->list_source); | |
879 | INIT_LIST_HEAD(&path->list_sink); | |
880 | ||
881 | /* check for external widgets */ | |
882 | if (wsink->id == snd_soc_dapm_input) { | |
883 | if (wsource->id == snd_soc_dapm_micbias || | |
884 | wsource->id == snd_soc_dapm_mic || | |
885 | wsink->id == snd_soc_dapm_line) | |
886 | wsink->ext = 1; | |
887 | } | |
888 | if (wsource->id == snd_soc_dapm_output) { | |
889 | if (wsink->id == snd_soc_dapm_spk || | |
890 | wsink->id == snd_soc_dapm_hp || | |
891 | wsink->id == snd_soc_dapm_line) | |
892 | wsource->ext = 1; | |
893 | } | |
894 | ||
895 | /* connect static paths */ | |
896 | if (control == NULL) { | |
897 | list_add(&path->list, &codec->dapm_paths); | |
898 | list_add(&path->list_sink, &wsink->sources); | |
899 | list_add(&path->list_source, &wsource->sinks); | |
900 | path->connect = 1; | |
901 | return 0; | |
902 | } | |
903 | ||
904 | /* connect dynamic paths */ | |
905 | switch(wsink->id) { | |
906 | case snd_soc_dapm_adc: | |
907 | case snd_soc_dapm_dac: | |
908 | case snd_soc_dapm_pga: | |
909 | case snd_soc_dapm_input: | |
910 | case snd_soc_dapm_output: | |
911 | case snd_soc_dapm_micbias: | |
912 | case snd_soc_dapm_vmid: | |
913 | case snd_soc_dapm_pre: | |
914 | case snd_soc_dapm_post: | |
915 | list_add(&path->list, &codec->dapm_paths); | |
916 | list_add(&path->list_sink, &wsink->sources); | |
917 | list_add(&path->list_source, &wsource->sinks); | |
918 | path->connect = 1; | |
919 | return 0; | |
920 | case snd_soc_dapm_mux: | |
921 | ret = dapm_connect_mux(codec, wsource, wsink, path, control, | |
922 | &wsink->kcontrols[0]); | |
923 | if (ret != 0) | |
924 | goto err; | |
925 | break; | |
926 | case snd_soc_dapm_switch: | |
927 | case snd_soc_dapm_mixer: | |
928 | ret = dapm_connect_mixer(codec, wsource, wsink, path, control); | |
929 | if (ret != 0) | |
930 | goto err; | |
931 | break; | |
932 | case snd_soc_dapm_hp: | |
933 | case snd_soc_dapm_mic: | |
934 | case snd_soc_dapm_line: | |
935 | case snd_soc_dapm_spk: | |
936 | list_add(&path->list, &codec->dapm_paths); | |
937 | list_add(&path->list_sink, &wsink->sources); | |
938 | list_add(&path->list_source, &wsource->sinks); | |
939 | path->connect = 0; | |
940 | return 0; | |
941 | } | |
942 | return 0; | |
943 | ||
944 | err: | |
945 | printk(KERN_WARNING "asoc: no dapm match for %s --> %s --> %s\n", source, | |
946 | control, sink); | |
947 | kfree(path); | |
948 | return ret; | |
949 | } | |
950 | EXPORT_SYMBOL_GPL(snd_soc_dapm_connect_input); | |
951 | ||
952 | /** | |
953 | * snd_soc_dapm_new_widgets - add new dapm widgets | |
954 | * @codec: audio codec | |
955 | * | |
956 | * Checks the codec for any new dapm widgets and creates them if found. | |
957 | * | |
958 | * Returns 0 for success. | |
959 | */ | |
960 | int snd_soc_dapm_new_widgets(struct snd_soc_codec *codec) | |
961 | { | |
962 | struct snd_soc_dapm_widget *w; | |
963 | ||
964 | mutex_lock(&codec->mutex); | |
965 | list_for_each_entry(w, &codec->dapm_widgets, list) | |
966 | { | |
967 | if (w->new) | |
968 | continue; | |
969 | ||
970 | switch(w->id) { | |
971 | case snd_soc_dapm_switch: | |
972 | case snd_soc_dapm_mixer: | |
973 | dapm_new_mixer(codec, w); | |
974 | break; | |
975 | case snd_soc_dapm_mux: | |
976 | dapm_new_mux(codec, w); | |
977 | break; | |
978 | case snd_soc_dapm_adc: | |
979 | case snd_soc_dapm_dac: | |
980 | case snd_soc_dapm_pga: | |
981 | dapm_new_pga(codec, w); | |
982 | break; | |
983 | case snd_soc_dapm_input: | |
984 | case snd_soc_dapm_output: | |
985 | case snd_soc_dapm_micbias: | |
986 | case snd_soc_dapm_spk: | |
987 | case snd_soc_dapm_hp: | |
988 | case snd_soc_dapm_mic: | |
989 | case snd_soc_dapm_line: | |
990 | case snd_soc_dapm_vmid: | |
991 | case snd_soc_dapm_pre: | |
992 | case snd_soc_dapm_post: | |
993 | break; | |
994 | } | |
995 | w->new = 1; | |
996 | } | |
997 | ||
998 | dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP); | |
999 | mutex_unlock(&codec->mutex); | |
1000 | return 0; | |
1001 | } | |
1002 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets); | |
1003 | ||
1004 | /** | |
1005 | * snd_soc_dapm_get_volsw - dapm mixer get callback | |
1006 | * @kcontrol: mixer control | |
1007 | * @uinfo: control element information | |
1008 | * | |
1009 | * Callback to get the value of a dapm mixer control. | |
1010 | * | |
1011 | * Returns 0 for success. | |
1012 | */ | |
1013 | int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol, | |
1014 | struct snd_ctl_elem_value *ucontrol) | |
1015 | { | |
1016 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1017 | int reg = kcontrol->private_value & 0xff; | |
1018 | int shift = (kcontrol->private_value >> 8) & 0x0f; | |
1019 | int rshift = (kcontrol->private_value >> 12) & 0x0f; | |
1020 | int mask = (kcontrol->private_value >> 16) & 0xff; | |
1021 | int invert = (kcontrol->private_value >> 24) & 0x01; | |
1022 | ||
1023 | /* return the saved value if we are powered down */ | |
1024 | if (widget->id == snd_soc_dapm_pga && !widget->power) { | |
1025 | ucontrol->value.integer.value[0] = widget->saved_value; | |
1026 | return 0; | |
1027 | } | |
1028 | ||
1029 | ucontrol->value.integer.value[0] = | |
1030 | (snd_soc_read(widget->codec, reg) >> shift) & mask; | |
1031 | if (shift != rshift) | |
1032 | ucontrol->value.integer.value[1] = | |
1033 | (snd_soc_read(widget->codec, reg) >> rshift) & mask; | |
1034 | if (invert) { | |
1035 | ucontrol->value.integer.value[0] = | |
1036 | mask - ucontrol->value.integer.value[0]; | |
1037 | if (shift != rshift) | |
1038 | ucontrol->value.integer.value[1] = | |
1039 | mask - ucontrol->value.integer.value[1]; | |
1040 | } | |
1041 | ||
1042 | return 0; | |
1043 | } | |
1044 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw); | |
1045 | ||
1046 | /** | |
1047 | * snd_soc_dapm_put_volsw - dapm mixer set callback | |
1048 | * @kcontrol: mixer control | |
1049 | * @uinfo: control element information | |
1050 | * | |
1051 | * Callback to set the value of a dapm mixer control. | |
1052 | * | |
1053 | * Returns 0 for success. | |
1054 | */ | |
1055 | int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, | |
1056 | struct snd_ctl_elem_value *ucontrol) | |
1057 | { | |
1058 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1059 | int reg = kcontrol->private_value & 0xff; | |
1060 | int shift = (kcontrol->private_value >> 8) & 0x0f; | |
1061 | int rshift = (kcontrol->private_value >> 12) & 0x0f; | |
1062 | int mask = (kcontrol->private_value >> 16) & 0xff; | |
1063 | int invert = (kcontrol->private_value >> 24) & 0x01; | |
1064 | unsigned short val, val2, val_mask; | |
1065 | int ret; | |
1066 | ||
1067 | val = (ucontrol->value.integer.value[0] & mask); | |
1068 | ||
1069 | if (invert) | |
1070 | val = mask - val; | |
1071 | val_mask = mask << shift; | |
1072 | val = val << shift; | |
1073 | if (shift != rshift) { | |
1074 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1075 | if (invert) | |
1076 | val2 = mask - val2; | |
1077 | val_mask |= mask << rshift; | |
1078 | val |= val2 << rshift; | |
1079 | } | |
1080 | ||
1081 | mutex_lock(&widget->codec->mutex); | |
1082 | widget->value = val; | |
1083 | ||
1084 | /* save volume value if the widget is powered down */ | |
1085 | if (widget->id == snd_soc_dapm_pga && !widget->power) { | |
1086 | widget->saved_value = val; | |
1087 | mutex_unlock(&widget->codec->mutex); | |
1088 | return 1; | |
1089 | } | |
1090 | ||
1091 | dapm_mixer_update_power(widget, kcontrol, reg, val_mask, val, invert); | |
1092 | if (widget->event) { | |
1093 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
1094 | ret = widget->event(widget, SND_SOC_DAPM_PRE_REG); | |
1095 | if (ret < 0) | |
1096 | goto out; | |
1097 | } | |
1098 | ret = snd_soc_update_bits(widget->codec, reg, val_mask, val); | |
1099 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
1100 | ret = widget->event(widget, SND_SOC_DAPM_POST_REG); | |
1101 | } else | |
1102 | ret = snd_soc_update_bits(widget->codec, reg, val_mask, val); | |
1103 | ||
1104 | out: | |
1105 | mutex_unlock(&widget->codec->mutex); | |
1106 | return ret; | |
1107 | } | |
1108 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw); | |
1109 | ||
1110 | /** | |
1111 | * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback | |
1112 | * @kcontrol: mixer control | |
1113 | * @uinfo: control element information | |
1114 | * | |
1115 | * Callback to get the value of a dapm enumerated double mixer control. | |
1116 | * | |
1117 | * Returns 0 for success. | |
1118 | */ | |
1119 | int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol, | |
1120 | struct snd_ctl_elem_value *ucontrol) | |
1121 | { | |
1122 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1123 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1124 | unsigned short val, bitmask; | |
1125 | ||
1126 | for (bitmask = 1; bitmask < e->mask; bitmask <<= 1) | |
1127 | ; | |
1128 | val = snd_soc_read(widget->codec, e->reg); | |
1129 | ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1); | |
1130 | if (e->shift_l != e->shift_r) | |
1131 | ucontrol->value.enumerated.item[1] = | |
1132 | (val >> e->shift_r) & (bitmask - 1); | |
1133 | ||
1134 | return 0; | |
1135 | } | |
1136 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double); | |
1137 | ||
1138 | /** | |
1139 | * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback | |
1140 | * @kcontrol: mixer control | |
1141 | * @uinfo: control element information | |
1142 | * | |
1143 | * Callback to set the value of a dapm enumerated double mixer control. | |
1144 | * | |
1145 | * Returns 0 for success. | |
1146 | */ | |
1147 | int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, | |
1148 | struct snd_ctl_elem_value *ucontrol) | |
1149 | { | |
1150 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1151 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1152 | unsigned short val, mux; | |
1153 | unsigned short mask, bitmask; | |
1154 | int ret = 0; | |
1155 | ||
1156 | for (bitmask = 1; bitmask < e->mask; bitmask <<= 1) | |
1157 | ; | |
1158 | if (ucontrol->value.enumerated.item[0] > e->mask - 1) | |
1159 | return -EINVAL; | |
1160 | mux = ucontrol->value.enumerated.item[0]; | |
1161 | val = mux << e->shift_l; | |
1162 | mask = (bitmask - 1) << e->shift_l; | |
1163 | if (e->shift_l != e->shift_r) { | |
1164 | if (ucontrol->value.enumerated.item[1] > e->mask - 1) | |
1165 | return -EINVAL; | |
1166 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
1167 | mask |= (bitmask - 1) << e->shift_r; | |
1168 | } | |
1169 | ||
1170 | mutex_lock(&widget->codec->mutex); | |
1171 | widget->value = val; | |
1172 | dapm_mux_update_power(widget, kcontrol, mask, mux, e); | |
1173 | if (widget->event) { | |
1174 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
1175 | ret = widget->event(widget, SND_SOC_DAPM_PRE_REG); | |
1176 | if (ret < 0) | |
1177 | goto out; | |
1178 | } | |
1179 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1180 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
1181 | ret = widget->event(widget, SND_SOC_DAPM_POST_REG); | |
1182 | } else | |
1183 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1184 | ||
1185 | out: | |
1186 | mutex_unlock(&widget->codec->mutex); | |
1187 | return ret; | |
1188 | } | |
1189 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double); | |
1190 | ||
1191 | /** | |
1192 | * snd_soc_dapm_new_control - create new dapm control | |
1193 | * @codec: audio codec | |
1194 | * @widget: widget template | |
1195 | * | |
1196 | * Creates a new dapm control based upon the template. | |
1197 | * | |
1198 | * Returns 0 for success else error. | |
1199 | */ | |
1200 | int snd_soc_dapm_new_control(struct snd_soc_codec *codec, | |
1201 | const struct snd_soc_dapm_widget *widget) | |
1202 | { | |
1203 | struct snd_soc_dapm_widget *w; | |
1204 | ||
1205 | if ((w = dapm_cnew_widget(widget)) == NULL) | |
1206 | return -ENOMEM; | |
1207 | ||
1208 | w->codec = codec; | |
1209 | INIT_LIST_HEAD(&w->sources); | |
1210 | INIT_LIST_HEAD(&w->sinks); | |
1211 | INIT_LIST_HEAD(&w->list); | |
1212 | list_add(&w->list, &codec->dapm_widgets); | |
1213 | ||
1214 | /* machine layer set ups unconnected pins and insertions */ | |
1215 | w->connected = 1; | |
1216 | return 0; | |
1217 | } | |
1218 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control); | |
1219 | ||
1220 | /** | |
1221 | * snd_soc_dapm_stream_event - send a stream event to the dapm core | |
1222 | * @codec: audio codec | |
1223 | * @stream: stream name | |
1224 | * @event: stream event | |
1225 | * | |
1226 | * Sends a stream event to the dapm core. The core then makes any | |
1227 | * necessary widget power changes. | |
1228 | * | |
1229 | * Returns 0 for success else error. | |
1230 | */ | |
1231 | int snd_soc_dapm_stream_event(struct snd_soc_codec *codec, | |
1232 | char *stream, int event) | |
1233 | { | |
1234 | struct snd_soc_dapm_widget *w; | |
1235 | ||
11da21a7 SF |
1236 | if (stream == NULL) |
1237 | return 0; | |
1238 | ||
2b97eabc RP |
1239 | mutex_lock(&codec->mutex); |
1240 | list_for_each_entry(w, &codec->dapm_widgets, list) | |
1241 | { | |
1242 | if (!w->sname) | |
1243 | continue; | |
1244 | dbg("widget %s\n %s stream %s event %d\n", w->name, w->sname, | |
1245 | stream, event); | |
1246 | if (strstr(w->sname, stream)) { | |
1247 | switch(event) { | |
1248 | case SND_SOC_DAPM_STREAM_START: | |
1249 | w->active = 1; | |
1250 | break; | |
1251 | case SND_SOC_DAPM_STREAM_STOP: | |
1252 | w->active = 0; | |
1253 | break; | |
1254 | case SND_SOC_DAPM_STREAM_SUSPEND: | |
1255 | if (w->active) | |
1256 | w->suspend = 1; | |
1257 | w->active = 0; | |
1258 | break; | |
1259 | case SND_SOC_DAPM_STREAM_RESUME: | |
1260 | if (w->suspend) { | |
1261 | w->active = 1; | |
1262 | w->suspend = 0; | |
1263 | } | |
1264 | break; | |
1265 | case SND_SOC_DAPM_STREAM_PAUSE_PUSH: | |
1266 | break; | |
1267 | case SND_SOC_DAPM_STREAM_PAUSE_RELEASE: | |
1268 | break; | |
1269 | } | |
1270 | } | |
1271 | } | |
1272 | mutex_unlock(&codec->mutex); | |
1273 | ||
1274 | dapm_power_widgets(codec, event); | |
1275 | dump_dapm(codec, __FUNCTION__); | |
1276 | return 0; | |
1277 | } | |
1278 | EXPORT_SYMBOL_GPL(snd_soc_dapm_stream_event); | |
1279 | ||
1280 | /** | |
1281 | * snd_soc_dapm_set_endpoint - set audio endpoint status | |
1282 | * @codec: audio codec | |
1283 | * @endpoint: audio signal endpoint (or start point) | |
1284 | * @status: point status | |
1285 | * | |
1286 | * Set audio endpoint status - connected or disconnected. | |
1287 | * | |
1288 | * Returns 0 for success else error. | |
1289 | */ | |
1290 | int snd_soc_dapm_set_endpoint(struct snd_soc_codec *codec, | |
1291 | char *endpoint, int status) | |
1292 | { | |
1293 | struct snd_soc_dapm_widget *w; | |
1294 | ||
1295 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
1296 | if (!strcmp(w->name, endpoint)) { | |
1297 | w->connected = status; | |
1298 | } | |
1299 | } | |
1300 | ||
1301 | return 0; | |
1302 | } | |
1303 | EXPORT_SYMBOL_GPL(snd_soc_dapm_set_endpoint); | |
1304 | ||
1305 | /** | |
1306 | * snd_soc_dapm_free - free dapm resources | |
1307 | * @socdev: SoC device | |
1308 | * | |
1309 | * Free all dapm widgets and resources. | |
1310 | */ | |
1311 | void snd_soc_dapm_free(struct snd_soc_device *socdev) | |
1312 | { | |
1313 | struct snd_soc_codec *codec = socdev->codec; | |
1314 | ||
1315 | snd_soc_dapm_sys_remove(socdev->dev); | |
1316 | dapm_free_widgets(codec); | |
1317 | } | |
1318 | EXPORT_SYMBOL_GPL(snd_soc_dapm_free); | |
1319 | ||
1320 | /* Module information */ | |
1321 | MODULE_AUTHOR("Liam Girdwood, liam.girdwood@wolfsonmicro.com, www.wolfsonmicro.com"); | |
1322 | MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC"); | |
1323 | MODULE_LICENSE("GPL"); |