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-rw-r--r-- | sound/soc/soc-dapm.c | 1327 |
1 files changed, 1327 insertions, 0 deletions
diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c new file mode 100644 index 000000000000..2c2c27f4e9c0 --- /dev/null +++ b/sound/soc/soc-dapm.c | |||
@@ -0,0 +1,1327 @@ | |||
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 | */ | ||
466 | int dapm_power_widgets(struct snd_soc_codec *codec, int event) | ||
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) { | ||
654 | p = list_entry(lp, struct snd_soc_dapm_path, list_source); | ||
655 | if (p->connect) | ||
656 | printk(" out %s %s\n", p->name ? p->name : "static", | ||
657 | p->sink->name); | ||
658 | } | ||
659 | } | ||
660 | break; | ||
661 | } | ||
662 | } | ||
663 | } | ||
664 | #endif | ||
665 | |||
666 | /* test and update the power status of a mux widget */ | ||
667 | int dapm_mux_update_power(struct snd_soc_dapm_widget *widget, | ||
668 | struct snd_kcontrol *kcontrol, int mask, int val, struct soc_enum* e) | ||
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 | } | ||
700 | EXPORT_SYMBOL_GPL(dapm_mux_update_power); | ||
701 | |||
702 | /* test and update the power status of a mixer widget */ | ||
703 | int dapm_mixer_update_power(struct snd_soc_dapm_widget *widget, | ||
704 | struct snd_kcontrol *kcontrol, int reg, int val_mask, int val, int invert) | ||
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 | } | ||
736 | EXPORT_SYMBOL_GPL(dapm_mixer_update_power); | ||
737 | |||
738 | /* show dapm widget status in sys fs */ | ||
739 | static ssize_t dapm_widget_show(struct device *dev, | ||
740 | struct device_attribute *attr, char *buf) | ||
741 | { | ||
742 | struct snd_soc_device *devdata = dev_get_drvdata(dev); | ||
743 | struct snd_soc_codec *codec = devdata->codec; | ||
744 | struct snd_soc_dapm_widget *w; | ||
745 | int count = 0; | ||
746 | char *state = "not set"; | ||
747 | |||
748 | list_for_each_entry(w, &codec->dapm_widgets, list) { | ||
749 | |||
750 | /* only display widgets that burnm power */ | ||
751 | switch (w->id) { | ||
752 | case snd_soc_dapm_hp: | ||
753 | case snd_soc_dapm_mic: | ||
754 | case snd_soc_dapm_spk: | ||
755 | case snd_soc_dapm_line: | ||
756 | case snd_soc_dapm_micbias: | ||
757 | case snd_soc_dapm_dac: | ||
758 | case snd_soc_dapm_adc: | ||
759 | case snd_soc_dapm_pga: | ||
760 | case snd_soc_dapm_mixer: | ||
761 | if (w->name) | ||
762 | count += sprintf(buf + count, "%s: %s\n", | ||
763 | w->name, w->power ? "On":"Off"); | ||
764 | break; | ||
765 | default: | ||
766 | break; | ||
767 | } | ||
768 | } | ||
769 | |||
770 | switch(codec->dapm_state){ | ||
771 | case SNDRV_CTL_POWER_D0: | ||
772 | state = "D0"; | ||
773 | break; | ||
774 | case SNDRV_CTL_POWER_D1: | ||
775 | state = "D1"; | ||
776 | break; | ||
777 | case SNDRV_CTL_POWER_D2: | ||
778 | state = "D2"; | ||
779 | break; | ||
780 | case SNDRV_CTL_POWER_D3hot: | ||
781 | state = "D3hot"; | ||
782 | break; | ||
783 | case SNDRV_CTL_POWER_D3cold: | ||
784 | state = "D3cold"; | ||
785 | break; | ||
786 | } | ||
787 | count += sprintf(buf + count, "PM State: %s\n", state); | ||
788 | |||
789 | return count; | ||
790 | } | ||
791 | |||
792 | static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL); | ||
793 | |||
794 | int snd_soc_dapm_sys_add(struct device *dev) | ||
795 | { | ||
796 | int ret = 0; | ||
797 | |||
798 | if (dapm_status) | ||
799 | ret = device_create_file(dev, &dev_attr_dapm_widget); | ||
800 | |||
801 | return ret; | ||
802 | } | ||
803 | |||
804 | static void snd_soc_dapm_sys_remove(struct device *dev) | ||
805 | { | ||
806 | if (dapm_status) | ||
807 | device_remove_file(dev, &dev_attr_dapm_widget); | ||
808 | } | ||
809 | |||
810 | /* free all dapm widgets and resources */ | ||
811 | void dapm_free_widgets(struct snd_soc_codec *codec) | ||
812 | { | ||
813 | struct snd_soc_dapm_widget *w, *next_w; | ||
814 | struct snd_soc_dapm_path *p, *next_p; | ||
815 | |||
816 | list_for_each_entry_safe(w, next_w, &codec->dapm_widgets, list) { | ||
817 | list_del(&w->list); | ||
818 | kfree(w); | ||
819 | } | ||
820 | |||
821 | list_for_each_entry_safe(p, next_p, &codec->dapm_paths, list) { | ||
822 | list_del(&p->list); | ||
823 | kfree(p->long_name); | ||
824 | kfree(p); | ||
825 | } | ||
826 | } | ||
827 | |||
828 | /** | ||
829 | * snd_soc_dapm_sync_endpoints - scan and power dapm paths | ||
830 | * @codec: audio codec | ||
831 | * | ||
832 | * Walks all dapm audio paths and powers widgets according to their | ||
833 | * stream or path usage. | ||
834 | * | ||
835 | * Returns 0 for success. | ||
836 | */ | ||
837 | int snd_soc_dapm_sync_endpoints(struct snd_soc_codec *codec) | ||
838 | { | ||
839 | return dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP); | ||
840 | } | ||
841 | EXPORT_SYMBOL_GPL(snd_soc_dapm_sync_endpoints); | ||
842 | |||
843 | /** | ||
844 | * snd_soc_dapm_connect_input - connect dapm widgets | ||
845 | * @codec: audio codec | ||
846 | * @sink: name of target widget | ||
847 | * @control: mixer control name | ||
848 | * @source: name of source name | ||
849 | * | ||
850 | * Connects 2 dapm widgets together via a named audio path. The sink is | ||
851 | * the widget receiving the audio signal, whilst the source is the sender | ||
852 | * of the audio signal. | ||
853 | * | ||
854 | * Returns 0 for success else error. | ||
855 | */ | ||
856 | int snd_soc_dapm_connect_input(struct snd_soc_codec *codec, const char *sink, | ||
857 | const char * control, const char *source) | ||
858 | { | ||
859 | struct snd_soc_dapm_path *path; | ||
860 | struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w; | ||
861 | int ret = 0; | ||
862 | |||
863 | /* find src and dest widgets */ | ||
864 | list_for_each_entry(w, &codec->dapm_widgets, list) { | ||
865 | |||
866 | if (!wsink && !(strcmp(w->name, sink))) { | ||
867 | wsink = w; | ||
868 | continue; | ||
869 | } | ||
870 | if (!wsource && !(strcmp(w->name, source))) { | ||
871 | wsource = w; | ||
872 | } | ||
873 | } | ||
874 | |||
875 | if (wsource == NULL || wsink == NULL) | ||
876 | return -ENODEV; | ||
877 | |||
878 | path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL); | ||
879 | if (!path) | ||
880 | return -ENOMEM; | ||
881 | |||
882 | path->source = wsource; | ||
883 | path->sink = wsink; | ||
884 | INIT_LIST_HEAD(&path->list); | ||
885 | INIT_LIST_HEAD(&path->list_source); | ||
886 | INIT_LIST_HEAD(&path->list_sink); | ||
887 | |||
888 | /* check for external widgets */ | ||
889 | if (wsink->id == snd_soc_dapm_input) { | ||
890 | if (wsource->id == snd_soc_dapm_micbias || | ||
891 | wsource->id == snd_soc_dapm_mic || | ||
892 | wsink->id == snd_soc_dapm_line) | ||
893 | wsink->ext = 1; | ||
894 | } | ||
895 | if (wsource->id == snd_soc_dapm_output) { | ||
896 | if (wsink->id == snd_soc_dapm_spk || | ||
897 | wsink->id == snd_soc_dapm_hp || | ||
898 | wsink->id == snd_soc_dapm_line) | ||
899 | wsource->ext = 1; | ||
900 | } | ||
901 | |||
902 | /* connect static paths */ | ||
903 | if (control == NULL) { | ||
904 | list_add(&path->list, &codec->dapm_paths); | ||
905 | list_add(&path->list_sink, &wsink->sources); | ||
906 | list_add(&path->list_source, &wsource->sinks); | ||
907 | path->connect = 1; | ||
908 | return 0; | ||
909 | } | ||
910 | |||
911 | /* connect dynamic paths */ | ||
912 | switch(wsink->id) { | ||
913 | case snd_soc_dapm_adc: | ||
914 | case snd_soc_dapm_dac: | ||
915 | case snd_soc_dapm_pga: | ||
916 | case snd_soc_dapm_input: | ||
917 | case snd_soc_dapm_output: | ||
918 | case snd_soc_dapm_micbias: | ||
919 | case snd_soc_dapm_vmid: | ||
920 | case snd_soc_dapm_pre: | ||
921 | case snd_soc_dapm_post: | ||
922 | list_add(&path->list, &codec->dapm_paths); | ||
923 | list_add(&path->list_sink, &wsink->sources); | ||
924 | list_add(&path->list_source, &wsource->sinks); | ||
925 | path->connect = 1; | ||
926 | return 0; | ||
927 | case snd_soc_dapm_mux: | ||
928 | ret = dapm_connect_mux(codec, wsource, wsink, path, control, | ||
929 | &wsink->kcontrols[0]); | ||
930 | if (ret != 0) | ||
931 | goto err; | ||
932 | break; | ||
933 | case snd_soc_dapm_switch: | ||
934 | case snd_soc_dapm_mixer: | ||
935 | ret = dapm_connect_mixer(codec, wsource, wsink, path, control); | ||
936 | if (ret != 0) | ||
937 | goto err; | ||
938 | break; | ||
939 | case snd_soc_dapm_hp: | ||
940 | case snd_soc_dapm_mic: | ||
941 | case snd_soc_dapm_line: | ||
942 | case snd_soc_dapm_spk: | ||
943 | list_add(&path->list, &codec->dapm_paths); | ||
944 | list_add(&path->list_sink, &wsink->sources); | ||
945 | list_add(&path->list_source, &wsource->sinks); | ||
946 | path->connect = 0; | ||
947 | return 0; | ||
948 | } | ||
949 | return 0; | ||
950 | |||
951 | err: | ||
952 | printk(KERN_WARNING "asoc: no dapm match for %s --> %s --> %s\n", source, | ||
953 | control, sink); | ||
954 | kfree(path); | ||
955 | return ret; | ||
956 | } | ||
957 | EXPORT_SYMBOL_GPL(snd_soc_dapm_connect_input); | ||
958 | |||
959 | /** | ||
960 | * snd_soc_dapm_new_widgets - add new dapm widgets | ||
961 | * @codec: audio codec | ||
962 | * | ||
963 | * Checks the codec for any new dapm widgets and creates them if found. | ||
964 | * | ||
965 | * Returns 0 for success. | ||
966 | */ | ||
967 | int snd_soc_dapm_new_widgets(struct snd_soc_codec *codec) | ||
968 | { | ||
969 | struct snd_soc_dapm_widget *w; | ||
970 | |||
971 | mutex_lock(&codec->mutex); | ||
972 | list_for_each_entry(w, &codec->dapm_widgets, list) | ||
973 | { | ||
974 | if (w->new) | ||
975 | continue; | ||
976 | |||
977 | switch(w->id) { | ||
978 | case snd_soc_dapm_switch: | ||
979 | case snd_soc_dapm_mixer: | ||
980 | dapm_new_mixer(codec, w); | ||
981 | break; | ||
982 | case snd_soc_dapm_mux: | ||
983 | dapm_new_mux(codec, w); | ||
984 | break; | ||
985 | case snd_soc_dapm_adc: | ||
986 | case snd_soc_dapm_dac: | ||
987 | case snd_soc_dapm_pga: | ||
988 | dapm_new_pga(codec, w); | ||
989 | break; | ||
990 | case snd_soc_dapm_input: | ||
991 | case snd_soc_dapm_output: | ||
992 | case snd_soc_dapm_micbias: | ||
993 | case snd_soc_dapm_spk: | ||
994 | case snd_soc_dapm_hp: | ||
995 | case snd_soc_dapm_mic: | ||
996 | case snd_soc_dapm_line: | ||
997 | case snd_soc_dapm_vmid: | ||
998 | case snd_soc_dapm_pre: | ||
999 | case snd_soc_dapm_post: | ||
1000 | break; | ||
1001 | } | ||
1002 | w->new = 1; | ||
1003 | } | ||
1004 | |||
1005 | dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP); | ||
1006 | mutex_unlock(&codec->mutex); | ||
1007 | return 0; | ||
1008 | } | ||
1009 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets); | ||
1010 | |||
1011 | /** | ||
1012 | * snd_soc_dapm_get_volsw - dapm mixer get callback | ||
1013 | * @kcontrol: mixer control | ||
1014 | * @uinfo: control element information | ||
1015 | * | ||
1016 | * Callback to get the value of a dapm mixer control. | ||
1017 | * | ||
1018 | * Returns 0 for success. | ||
1019 | */ | ||
1020 | int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol, | ||
1021 | struct snd_ctl_elem_value *ucontrol) | ||
1022 | { | ||
1023 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | ||
1024 | int reg = kcontrol->private_value & 0xff; | ||
1025 | int shift = (kcontrol->private_value >> 8) & 0x0f; | ||
1026 | int rshift = (kcontrol->private_value >> 12) & 0x0f; | ||
1027 | int mask = (kcontrol->private_value >> 16) & 0xff; | ||
1028 | int invert = (kcontrol->private_value >> 24) & 0x01; | ||
1029 | |||
1030 | /* return the saved value if we are powered down */ | ||
1031 | if (widget->id == snd_soc_dapm_pga && !widget->power) { | ||
1032 | ucontrol->value.integer.value[0] = widget->saved_value; | ||
1033 | return 0; | ||
1034 | } | ||
1035 | |||
1036 | ucontrol->value.integer.value[0] = | ||
1037 | (snd_soc_read(widget->codec, reg) >> shift) & mask; | ||
1038 | if (shift != rshift) | ||
1039 | ucontrol->value.integer.value[1] = | ||
1040 | (snd_soc_read(widget->codec, reg) >> rshift) & mask; | ||
1041 | if (invert) { | ||
1042 | ucontrol->value.integer.value[0] = | ||
1043 | mask - ucontrol->value.integer.value[0]; | ||
1044 | if (shift != rshift) | ||
1045 | ucontrol->value.integer.value[1] = | ||
1046 | mask - ucontrol->value.integer.value[1]; | ||
1047 | } | ||
1048 | |||
1049 | return 0; | ||
1050 | } | ||
1051 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw); | ||
1052 | |||
1053 | /** | ||
1054 | * snd_soc_dapm_put_volsw - dapm mixer set callback | ||
1055 | * @kcontrol: mixer control | ||
1056 | * @uinfo: control element information | ||
1057 | * | ||
1058 | * Callback to set the value of a dapm mixer control. | ||
1059 | * | ||
1060 | * Returns 0 for success. | ||
1061 | */ | ||
1062 | int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, | ||
1063 | struct snd_ctl_elem_value *ucontrol) | ||
1064 | { | ||
1065 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | ||
1066 | int reg = kcontrol->private_value & 0xff; | ||
1067 | int shift = (kcontrol->private_value >> 8) & 0x0f; | ||
1068 | int rshift = (kcontrol->private_value >> 12) & 0x0f; | ||
1069 | int mask = (kcontrol->private_value >> 16) & 0xff; | ||
1070 | int invert = (kcontrol->private_value >> 24) & 0x01; | ||
1071 | unsigned short val, val2, val_mask; | ||
1072 | int ret; | ||
1073 | |||
1074 | val = (ucontrol->value.integer.value[0] & mask); | ||
1075 | |||
1076 | if (invert) | ||
1077 | val = mask - val; | ||
1078 | val_mask = mask << shift; | ||
1079 | val = val << shift; | ||
1080 | if (shift != rshift) { | ||
1081 | val2 = (ucontrol->value.integer.value[1] & mask); | ||
1082 | if (invert) | ||
1083 | val2 = mask - val2; | ||
1084 | val_mask |= mask << rshift; | ||
1085 | val |= val2 << rshift; | ||
1086 | } | ||
1087 | |||
1088 | mutex_lock(&widget->codec->mutex); | ||
1089 | widget->value = val; | ||
1090 | |||
1091 | /* save volume value if the widget is powered down */ | ||
1092 | if (widget->id == snd_soc_dapm_pga && !widget->power) { | ||
1093 | widget->saved_value = val; | ||
1094 | mutex_unlock(&widget->codec->mutex); | ||
1095 | return 1; | ||
1096 | } | ||
1097 | |||
1098 | dapm_mixer_update_power(widget, kcontrol, reg, val_mask, val, invert); | ||
1099 | if (widget->event) { | ||
1100 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | ||
1101 | ret = widget->event(widget, SND_SOC_DAPM_PRE_REG); | ||
1102 | if (ret < 0) | ||
1103 | goto out; | ||
1104 | } | ||
1105 | ret = snd_soc_update_bits(widget->codec, reg, val_mask, val); | ||
1106 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | ||
1107 | ret = widget->event(widget, SND_SOC_DAPM_POST_REG); | ||
1108 | } else | ||
1109 | ret = snd_soc_update_bits(widget->codec, reg, val_mask, val); | ||
1110 | |||
1111 | out: | ||
1112 | mutex_unlock(&widget->codec->mutex); | ||
1113 | return ret; | ||
1114 | } | ||
1115 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw); | ||
1116 | |||
1117 | /** | ||
1118 | * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback | ||
1119 | * @kcontrol: mixer control | ||
1120 | * @uinfo: control element information | ||
1121 | * | ||
1122 | * Callback to get the value of a dapm enumerated double mixer control. | ||
1123 | * | ||
1124 | * Returns 0 for success. | ||
1125 | */ | ||
1126 | int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol, | ||
1127 | struct snd_ctl_elem_value *ucontrol) | ||
1128 | { | ||
1129 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | ||
1130 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | ||
1131 | unsigned short val, bitmask; | ||
1132 | |||
1133 | for (bitmask = 1; bitmask < e->mask; bitmask <<= 1) | ||
1134 | ; | ||
1135 | val = snd_soc_read(widget->codec, e->reg); | ||
1136 | ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1); | ||
1137 | if (e->shift_l != e->shift_r) | ||
1138 | ucontrol->value.enumerated.item[1] = | ||
1139 | (val >> e->shift_r) & (bitmask - 1); | ||
1140 | |||
1141 | return 0; | ||
1142 | } | ||
1143 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double); | ||
1144 | |||
1145 | /** | ||
1146 | * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback | ||
1147 | * @kcontrol: mixer control | ||
1148 | * @uinfo: control element information | ||
1149 | * | ||
1150 | * Callback to set the value of a dapm enumerated double mixer control. | ||
1151 | * | ||
1152 | * Returns 0 for success. | ||
1153 | */ | ||
1154 | int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, | ||
1155 | struct snd_ctl_elem_value *ucontrol) | ||
1156 | { | ||
1157 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | ||
1158 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | ||
1159 | unsigned short val, mux; | ||
1160 | unsigned short mask, bitmask; | ||
1161 | int ret = 0; | ||
1162 | |||
1163 | for (bitmask = 1; bitmask < e->mask; bitmask <<= 1) | ||
1164 | ; | ||
1165 | if (ucontrol->value.enumerated.item[0] > e->mask - 1) | ||
1166 | return -EINVAL; | ||
1167 | mux = ucontrol->value.enumerated.item[0]; | ||
1168 | val = mux << e->shift_l; | ||
1169 | mask = (bitmask - 1) << e->shift_l; | ||
1170 | if (e->shift_l != e->shift_r) { | ||
1171 | if (ucontrol->value.enumerated.item[1] > e->mask - 1) | ||
1172 | return -EINVAL; | ||
1173 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | ||
1174 | mask |= (bitmask - 1) << e->shift_r; | ||
1175 | } | ||
1176 | |||
1177 | mutex_lock(&widget->codec->mutex); | ||
1178 | widget->value = val; | ||
1179 | dapm_mux_update_power(widget, kcontrol, mask, mux, e); | ||
1180 | if (widget->event) { | ||
1181 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | ||
1182 | ret = widget->event(widget, SND_SOC_DAPM_PRE_REG); | ||
1183 | if (ret < 0) | ||
1184 | goto out; | ||
1185 | } | ||
1186 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | ||
1187 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | ||
1188 | ret = widget->event(widget, SND_SOC_DAPM_POST_REG); | ||
1189 | } else | ||
1190 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | ||
1191 | |||
1192 | out: | ||
1193 | mutex_unlock(&widget->codec->mutex); | ||
1194 | return ret; | ||
1195 | } | ||
1196 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double); | ||
1197 | |||
1198 | /** | ||
1199 | * snd_soc_dapm_new_control - create new dapm control | ||
1200 | * @codec: audio codec | ||
1201 | * @widget: widget template | ||
1202 | * | ||
1203 | * Creates a new dapm control based upon the template. | ||
1204 | * | ||
1205 | * Returns 0 for success else error. | ||
1206 | */ | ||
1207 | int snd_soc_dapm_new_control(struct snd_soc_codec *codec, | ||
1208 | const struct snd_soc_dapm_widget *widget) | ||
1209 | { | ||
1210 | struct snd_soc_dapm_widget *w; | ||
1211 | |||
1212 | if ((w = dapm_cnew_widget(widget)) == NULL) | ||
1213 | return -ENOMEM; | ||
1214 | |||
1215 | w->codec = codec; | ||
1216 | INIT_LIST_HEAD(&w->sources); | ||
1217 | INIT_LIST_HEAD(&w->sinks); | ||
1218 | INIT_LIST_HEAD(&w->list); | ||
1219 | list_add(&w->list, &codec->dapm_widgets); | ||
1220 | |||
1221 | /* machine layer set ups unconnected pins and insertions */ | ||
1222 | w->connected = 1; | ||
1223 | return 0; | ||
1224 | } | ||
1225 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control); | ||
1226 | |||
1227 | /** | ||
1228 | * snd_soc_dapm_stream_event - send a stream event to the dapm core | ||
1229 | * @codec: audio codec | ||
1230 | * @stream: stream name | ||
1231 | * @event: stream event | ||
1232 | * | ||
1233 | * Sends a stream event to the dapm core. The core then makes any | ||
1234 | * necessary widget power changes. | ||
1235 | * | ||
1236 | * Returns 0 for success else error. | ||
1237 | */ | ||
1238 | int snd_soc_dapm_stream_event(struct snd_soc_codec *codec, | ||
1239 | char *stream, int event) | ||
1240 | { | ||
1241 | struct snd_soc_dapm_widget *w; | ||
1242 | |||
1243 | mutex_lock(&codec->mutex); | ||
1244 | list_for_each_entry(w, &codec->dapm_widgets, list) | ||
1245 | { | ||
1246 | if (!w->sname) | ||
1247 | continue; | ||
1248 | dbg("widget %s\n %s stream %s event %d\n", w->name, w->sname, | ||
1249 | stream, event); | ||
1250 | if (strstr(w->sname, stream)) { | ||
1251 | switch(event) { | ||
1252 | case SND_SOC_DAPM_STREAM_START: | ||
1253 | w->active = 1; | ||
1254 | break; | ||
1255 | case SND_SOC_DAPM_STREAM_STOP: | ||
1256 | w->active = 0; | ||
1257 | break; | ||
1258 | case SND_SOC_DAPM_STREAM_SUSPEND: | ||
1259 | if (w->active) | ||
1260 | w->suspend = 1; | ||
1261 | w->active = 0; | ||
1262 | break; | ||
1263 | case SND_SOC_DAPM_STREAM_RESUME: | ||
1264 | if (w->suspend) { | ||
1265 | w->active = 1; | ||
1266 | w->suspend = 0; | ||
1267 | } | ||
1268 | break; | ||
1269 | case SND_SOC_DAPM_STREAM_PAUSE_PUSH: | ||
1270 | break; | ||
1271 | case SND_SOC_DAPM_STREAM_PAUSE_RELEASE: | ||
1272 | break; | ||
1273 | } | ||
1274 | } | ||
1275 | } | ||
1276 | mutex_unlock(&codec->mutex); | ||
1277 | |||
1278 | dapm_power_widgets(codec, event); | ||
1279 | dump_dapm(codec, __FUNCTION__); | ||
1280 | return 0; | ||
1281 | } | ||
1282 | EXPORT_SYMBOL_GPL(snd_soc_dapm_stream_event); | ||
1283 | |||
1284 | /** | ||
1285 | * snd_soc_dapm_set_endpoint - set audio endpoint status | ||
1286 | * @codec: audio codec | ||
1287 | * @endpoint: audio signal endpoint (or start point) | ||
1288 | * @status: point status | ||
1289 | * | ||
1290 | * Set audio endpoint status - connected or disconnected. | ||
1291 | * | ||
1292 | * Returns 0 for success else error. | ||
1293 | */ | ||
1294 | int snd_soc_dapm_set_endpoint(struct snd_soc_codec *codec, | ||
1295 | char *endpoint, int status) | ||
1296 | { | ||
1297 | struct snd_soc_dapm_widget *w; | ||
1298 | |||
1299 | list_for_each_entry(w, &codec->dapm_widgets, list) { | ||
1300 | if (!strcmp(w->name, endpoint)) { | ||
1301 | w->connected = status; | ||
1302 | } | ||
1303 | } | ||
1304 | |||
1305 | return 0; | ||
1306 | } | ||
1307 | EXPORT_SYMBOL_GPL(snd_soc_dapm_set_endpoint); | ||
1308 | |||
1309 | /** | ||
1310 | * snd_soc_dapm_free - free dapm resources | ||
1311 | * @socdev: SoC device | ||
1312 | * | ||
1313 | * Free all dapm widgets and resources. | ||
1314 | */ | ||
1315 | void snd_soc_dapm_free(struct snd_soc_device *socdev) | ||
1316 | { | ||
1317 | struct snd_soc_codec *codec = socdev->codec; | ||
1318 | |||
1319 | snd_soc_dapm_sys_remove(socdev->dev); | ||
1320 | dapm_free_widgets(codec); | ||
1321 | } | ||
1322 | EXPORT_SYMBOL_GPL(snd_soc_dapm_free); | ||
1323 | |||
1324 | /* Module information */ | ||
1325 | MODULE_AUTHOR("Liam Girdwood, liam.girdwood@wolfsonmicro.com, www.wolfsonmicro.com"); | ||
1326 | MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC"); | ||
1327 | MODULE_LICENSE("GPL"); | ||