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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 | |
3a4fa0a2 | 27 | * o Delayed powerdown of audio susbsystem to reduce pops between a quick |
2b97eabc RP |
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> | |
2b97eabc RP |
46 | #include <sound/core.h> |
47 | #include <sound/pcm.h> | |
48 | #include <sound/pcm_params.h> | |
49 | #include <sound/soc-dapm.h> | |
50 | #include <sound/initval.h> | |
51 | ||
52 | /* debug */ | |
53 | #define DAPM_DEBUG 0 | |
54 | #if DAPM_DEBUG | |
55 | #define dump_dapm(codec, action) dbg_dump_dapm(codec, action) | |
56 | #define dbg(format, arg...) printk(format, ## arg) | |
57 | #else | |
58 | #define dump_dapm(codec, action) | |
59 | #define dbg(format, arg...) | |
60 | #endif | |
61 | ||
62 | #define POP_DEBUG 0 | |
63 | #if POP_DEBUG | |
64 | #define POP_TIME 500 /* 500 msecs - change if pop debug is too fast */ | |
d86d0193 | 65 | #define pop_wait(time) schedule_timeout_uninterruptible(msecs_to_jiffies(time)) |
2b97eabc RP |
66 | #define pop_dbg(format, arg...) printk(format, ## arg); pop_wait(POP_TIME) |
67 | #else | |
68 | #define pop_dbg(format, arg...) | |
69 | #define pop_wait(time) | |
70 | #endif | |
71 | ||
72 | /* dapm power sequences - make this per codec in the future */ | |
73 | static int dapm_up_seq[] = { | |
74 | snd_soc_dapm_pre, snd_soc_dapm_micbias, snd_soc_dapm_mic, | |
75 | snd_soc_dapm_mux, snd_soc_dapm_dac, snd_soc_dapm_mixer, snd_soc_dapm_pga, | |
76 | snd_soc_dapm_adc, snd_soc_dapm_hp, snd_soc_dapm_spk, snd_soc_dapm_post | |
77 | }; | |
78 | static int dapm_down_seq[] = { | |
79 | snd_soc_dapm_pre, snd_soc_dapm_adc, snd_soc_dapm_hp, snd_soc_dapm_spk, | |
80 | snd_soc_dapm_pga, snd_soc_dapm_mixer, snd_soc_dapm_dac, snd_soc_dapm_mic, | |
81 | snd_soc_dapm_micbias, snd_soc_dapm_mux, snd_soc_dapm_post | |
82 | }; | |
83 | ||
84 | static int dapm_status = 1; | |
85 | module_param(dapm_status, int, 0); | |
86 | MODULE_PARM_DESC(dapm_status, "enable DPM sysfs entries"); | |
87 | ||
88 | /* create a new dapm widget */ | |
88cb4290 | 89 | static inline struct snd_soc_dapm_widget *dapm_cnew_widget( |
2b97eabc RP |
90 | const struct snd_soc_dapm_widget *_widget) |
91 | { | |
88cb4290 | 92 | return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL); |
2b97eabc RP |
93 | } |
94 | ||
95 | /* set up initial codec paths */ | |
96 | static void dapm_set_path_status(struct snd_soc_dapm_widget *w, | |
97 | struct snd_soc_dapm_path *p, int i) | |
98 | { | |
99 | switch (w->id) { | |
100 | case snd_soc_dapm_switch: | |
101 | case snd_soc_dapm_mixer: { | |
102 | int val; | |
103 | int reg = w->kcontrols[i].private_value & 0xff; | |
104 | int shift = (w->kcontrols[i].private_value >> 8) & 0x0f; | |
105 | int mask = (w->kcontrols[i].private_value >> 16) & 0xff; | |
106 | int invert = (w->kcontrols[i].private_value >> 24) & 0x01; | |
107 | ||
108 | val = snd_soc_read(w->codec, reg); | |
109 | val = (val >> shift) & mask; | |
110 | ||
111 | if ((invert && !val) || (!invert && val)) | |
112 | p->connect = 1; | |
113 | else | |
114 | p->connect = 0; | |
115 | } | |
116 | break; | |
117 | case snd_soc_dapm_mux: { | |
118 | struct soc_enum *e = (struct soc_enum *)w->kcontrols[i].private_value; | |
119 | int val, item, bitmask; | |
120 | ||
121 | for (bitmask = 1; bitmask < e->mask; bitmask <<= 1) | |
122 | ; | |
123 | val = snd_soc_read(w->codec, e->reg); | |
124 | item = (val >> e->shift_l) & (bitmask - 1); | |
125 | ||
126 | p->connect = 0; | |
127 | for (i = 0; i < e->mask; i++) { | |
128 | if (!(strcmp(p->name, e->texts[i])) && item == i) | |
129 | p->connect = 1; | |
130 | } | |
131 | } | |
132 | break; | |
133 | /* does not effect routing - always connected */ | |
134 | case snd_soc_dapm_pga: | |
135 | case snd_soc_dapm_output: | |
136 | case snd_soc_dapm_adc: | |
137 | case snd_soc_dapm_input: | |
138 | case snd_soc_dapm_dac: | |
139 | case snd_soc_dapm_micbias: | |
140 | case snd_soc_dapm_vmid: | |
141 | p->connect = 1; | |
142 | break; | |
143 | /* does effect routing - dynamically connected */ | |
144 | case snd_soc_dapm_hp: | |
145 | case snd_soc_dapm_mic: | |
146 | case snd_soc_dapm_spk: | |
147 | case snd_soc_dapm_line: | |
148 | case snd_soc_dapm_pre: | |
149 | case snd_soc_dapm_post: | |
150 | p->connect = 0; | |
151 | break; | |
152 | } | |
153 | } | |
154 | ||
155 | /* connect mux widget to it's interconnecting audio paths */ | |
156 | static int dapm_connect_mux(struct snd_soc_codec *codec, | |
157 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, | |
158 | struct snd_soc_dapm_path *path, const char *control_name, | |
159 | const struct snd_kcontrol_new *kcontrol) | |
160 | { | |
161 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
162 | int i; | |
163 | ||
164 | for (i = 0; i < e->mask; i++) { | |
165 | if (!(strcmp(control_name, e->texts[i]))) { | |
166 | list_add(&path->list, &codec->dapm_paths); | |
167 | list_add(&path->list_sink, &dest->sources); | |
168 | list_add(&path->list_source, &src->sinks); | |
169 | path->name = (char*)e->texts[i]; | |
170 | dapm_set_path_status(dest, path, 0); | |
171 | return 0; | |
172 | } | |
173 | } | |
174 | ||
175 | return -ENODEV; | |
176 | } | |
177 | ||
178 | /* connect mixer widget to it's interconnecting audio paths */ | |
179 | static int dapm_connect_mixer(struct snd_soc_codec *codec, | |
180 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, | |
181 | struct snd_soc_dapm_path *path, const char *control_name) | |
182 | { | |
183 | int i; | |
184 | ||
185 | /* search for mixer kcontrol */ | |
186 | for (i = 0; i < dest->num_kcontrols; i++) { | |
187 | if (!strcmp(control_name, dest->kcontrols[i].name)) { | |
188 | list_add(&path->list, &codec->dapm_paths); | |
189 | list_add(&path->list_sink, &dest->sources); | |
190 | list_add(&path->list_source, &src->sinks); | |
191 | path->name = dest->kcontrols[i].name; | |
192 | dapm_set_path_status(dest, path, i); | |
193 | return 0; | |
194 | } | |
195 | } | |
196 | return -ENODEV; | |
197 | } | |
198 | ||
199 | /* update dapm codec register bits */ | |
200 | static int dapm_update_bits(struct snd_soc_dapm_widget *widget) | |
201 | { | |
202 | int change, power; | |
203 | unsigned short old, new; | |
204 | struct snd_soc_codec *codec = widget->codec; | |
205 | ||
206 | /* check for valid widgets */ | |
207 | if (widget->reg < 0 || widget->id == snd_soc_dapm_input || | |
208 | widget->id == snd_soc_dapm_output || | |
209 | widget->id == snd_soc_dapm_hp || | |
210 | widget->id == snd_soc_dapm_mic || | |
211 | widget->id == snd_soc_dapm_line || | |
212 | widget->id == snd_soc_dapm_spk) | |
213 | return 0; | |
214 | ||
215 | power = widget->power; | |
216 | if (widget->invert) | |
217 | power = (power ? 0:1); | |
218 | ||
219 | old = snd_soc_read(codec, widget->reg); | |
220 | new = (old & ~(0x1 << widget->shift)) | (power << widget->shift); | |
221 | ||
222 | change = old != new; | |
223 | if (change) { | |
224 | pop_dbg("pop test %s : %s in %d ms\n", widget->name, | |
225 | widget->power ? "on" : "off", POP_TIME); | |
226 | snd_soc_write(codec, widget->reg, new); | |
227 | pop_wait(POP_TIME); | |
228 | } | |
229 | dbg("reg old %x new %x change %d\n", old, new, change); | |
230 | return change; | |
231 | } | |
232 | ||
233 | /* ramps the volume up or down to minimise pops before or after a | |
234 | * DAPM power event */ | |
235 | static int dapm_set_pga(struct snd_soc_dapm_widget *widget, int power) | |
236 | { | |
237 | const struct snd_kcontrol_new *k = widget->kcontrols; | |
238 | ||
239 | if (widget->muted && !power) | |
240 | return 0; | |
241 | if (!widget->muted && power) | |
242 | return 0; | |
243 | ||
244 | if (widget->num_kcontrols && k) { | |
245 | int reg = k->private_value & 0xff; | |
246 | int shift = (k->private_value >> 8) & 0x0f; | |
247 | int mask = (k->private_value >> 16) & 0xff; | |
248 | int invert = (k->private_value >> 24) & 0x01; | |
249 | ||
250 | if (power) { | |
251 | int i; | |
252 | /* power up has happended, increase volume to last level */ | |
253 | if (invert) { | |
254 | for (i = mask; i > widget->saved_value; i--) | |
255 | snd_soc_update_bits(widget->codec, reg, mask, i); | |
256 | } else { | |
257 | for (i = 0; i < widget->saved_value; i++) | |
258 | snd_soc_update_bits(widget->codec, reg, mask, i); | |
259 | } | |
260 | widget->muted = 0; | |
261 | } else { | |
262 | /* power down is about to occur, decrease volume to mute */ | |
263 | int val = snd_soc_read(widget->codec, reg); | |
264 | int i = widget->saved_value = (val >> shift) & mask; | |
265 | if (invert) { | |
266 | for (; i < mask; i++) | |
267 | snd_soc_update_bits(widget->codec, reg, mask, i); | |
268 | } else { | |
269 | for (; i > 0; i--) | |
270 | snd_soc_update_bits(widget->codec, reg, mask, i); | |
271 | } | |
272 | widget->muted = 1; | |
273 | } | |
274 | } | |
275 | return 0; | |
276 | } | |
277 | ||
278 | /* create new dapm mixer control */ | |
279 | static int dapm_new_mixer(struct snd_soc_codec *codec, | |
280 | struct snd_soc_dapm_widget *w) | |
281 | { | |
282 | int i, ret = 0; | |
283 | char name[32]; | |
284 | struct snd_soc_dapm_path *path; | |
285 | ||
286 | /* add kcontrol */ | |
287 | for (i = 0; i < w->num_kcontrols; i++) { | |
288 | ||
289 | /* match name */ | |
290 | list_for_each_entry(path, &w->sources, list_sink) { | |
291 | ||
292 | /* mixer/mux paths name must match control name */ | |
293 | if (path->name != (char*)w->kcontrols[i].name) | |
294 | continue; | |
295 | ||
296 | /* add dapm control with long name */ | |
297 | snprintf(name, 32, "%s %s", w->name, w->kcontrols[i].name); | |
298 | path->long_name = kstrdup (name, GFP_KERNEL); | |
299 | if (path->long_name == NULL) | |
300 | return -ENOMEM; | |
301 | ||
302 | path->kcontrol = snd_soc_cnew(&w->kcontrols[i], w, | |
303 | path->long_name); | |
304 | ret = snd_ctl_add(codec->card, path->kcontrol); | |
305 | if (ret < 0) { | |
306 | printk(KERN_ERR "asoc: failed to add dapm kcontrol %s\n", | |
307 | path->long_name); | |
308 | kfree(path->long_name); | |
309 | path->long_name = NULL; | |
310 | return ret; | |
311 | } | |
312 | } | |
313 | } | |
314 | return ret; | |
315 | } | |
316 | ||
317 | /* create new dapm mux control */ | |
318 | static int dapm_new_mux(struct snd_soc_codec *codec, | |
319 | struct snd_soc_dapm_widget *w) | |
320 | { | |
321 | struct snd_soc_dapm_path *path = NULL; | |
322 | struct snd_kcontrol *kcontrol; | |
323 | int ret = 0; | |
324 | ||
325 | if (!w->num_kcontrols) { | |
326 | printk(KERN_ERR "asoc: mux %s has no controls\n", w->name); | |
327 | return -EINVAL; | |
328 | } | |
329 | ||
330 | kcontrol = snd_soc_cnew(&w->kcontrols[0], w, w->name); | |
331 | ret = snd_ctl_add(codec->card, kcontrol); | |
332 | if (ret < 0) | |
333 | goto err; | |
334 | ||
335 | list_for_each_entry(path, &w->sources, list_sink) | |
336 | path->kcontrol = kcontrol; | |
337 | ||
338 | return ret; | |
339 | ||
340 | err: | |
341 | printk(KERN_ERR "asoc: failed to add kcontrol %s\n", w->name); | |
342 | return ret; | |
343 | } | |
344 | ||
345 | /* create new dapm volume control */ | |
346 | static int dapm_new_pga(struct snd_soc_codec *codec, | |
347 | struct snd_soc_dapm_widget *w) | |
348 | { | |
349 | struct snd_kcontrol *kcontrol; | |
350 | int ret = 0; | |
351 | ||
352 | if (!w->num_kcontrols) | |
353 | return -EINVAL; | |
354 | ||
355 | kcontrol = snd_soc_cnew(&w->kcontrols[0], w, w->name); | |
356 | ret = snd_ctl_add(codec->card, kcontrol); | |
357 | if (ret < 0) { | |
358 | printk(KERN_ERR "asoc: failed to add kcontrol %s\n", w->name); | |
359 | return ret; | |
360 | } | |
361 | ||
362 | return ret; | |
363 | } | |
364 | ||
365 | /* reset 'walked' bit for each dapm path */ | |
366 | static inline void dapm_clear_walk(struct snd_soc_codec *codec) | |
367 | { | |
368 | struct snd_soc_dapm_path *p; | |
369 | ||
370 | list_for_each_entry(p, &codec->dapm_paths, list) | |
371 | p->walked = 0; | |
372 | } | |
373 | ||
374 | /* | |
375 | * Recursively check for a completed path to an active or physically connected | |
376 | * output widget. Returns number of complete paths. | |
377 | */ | |
378 | static int is_connected_output_ep(struct snd_soc_dapm_widget *widget) | |
379 | { | |
380 | struct snd_soc_dapm_path *path; | |
381 | int con = 0; | |
382 | ||
383 | if (widget->id == snd_soc_dapm_adc && widget->active) | |
384 | return 1; | |
385 | ||
386 | if (widget->connected) { | |
387 | /* connected pin ? */ | |
388 | if (widget->id == snd_soc_dapm_output && !widget->ext) | |
389 | return 1; | |
390 | ||
391 | /* connected jack or spk ? */ | |
392 | if (widget->id == snd_soc_dapm_hp || widget->id == snd_soc_dapm_spk || | |
393 | widget->id == snd_soc_dapm_line) | |
394 | return 1; | |
395 | } | |
396 | ||
397 | list_for_each_entry(path, &widget->sinks, list_source) { | |
398 | if (path->walked) | |
399 | continue; | |
400 | ||
401 | if (path->sink && path->connect) { | |
402 | path->walked = 1; | |
403 | con += is_connected_output_ep(path->sink); | |
404 | } | |
405 | } | |
406 | ||
407 | return con; | |
408 | } | |
409 | ||
410 | /* | |
411 | * Recursively check for a completed path to an active or physically connected | |
412 | * input widget. Returns number of complete paths. | |
413 | */ | |
414 | static int is_connected_input_ep(struct snd_soc_dapm_widget *widget) | |
415 | { | |
416 | struct snd_soc_dapm_path *path; | |
417 | int con = 0; | |
418 | ||
419 | /* active stream ? */ | |
420 | if (widget->id == snd_soc_dapm_dac && widget->active) | |
421 | return 1; | |
422 | ||
423 | if (widget->connected) { | |
424 | /* connected pin ? */ | |
425 | if (widget->id == snd_soc_dapm_input && !widget->ext) | |
426 | return 1; | |
427 | ||
428 | /* connected VMID/Bias for lower pops */ | |
429 | if (widget->id == snd_soc_dapm_vmid) | |
430 | return 1; | |
431 | ||
432 | /* connected jack ? */ | |
433 | if (widget->id == snd_soc_dapm_mic || widget->id == snd_soc_dapm_line) | |
434 | return 1; | |
435 | } | |
436 | ||
437 | list_for_each_entry(path, &widget->sources, list_sink) { | |
438 | if (path->walked) | |
439 | continue; | |
440 | ||
441 | if (path->source && path->connect) { | |
442 | path->walked = 1; | |
443 | con += is_connected_input_ep(path->source); | |
444 | } | |
445 | } | |
446 | ||
447 | return con; | |
448 | } | |
449 | ||
450 | /* | |
451 | * Scan each dapm widget for complete audio path. | |
452 | * A complete path is a route that has valid endpoints i.e.:- | |
453 | * | |
454 | * o DAC to output pin. | |
455 | * o Input Pin to ADC. | |
456 | * o Input pin to Output pin (bypass, sidetone) | |
457 | * o DAC to ADC (loopback). | |
458 | */ | |
d9c96cf3 | 459 | static int dapm_power_widgets(struct snd_soc_codec *codec, int event) |
2b97eabc RP |
460 | { |
461 | struct snd_soc_dapm_widget *w; | |
462 | int in, out, i, c = 1, *seq = NULL, ret = 0, power_change, power; | |
463 | ||
464 | /* do we have a sequenced stream event */ | |
465 | if (event == SND_SOC_DAPM_STREAM_START) { | |
466 | c = ARRAY_SIZE(dapm_up_seq); | |
467 | seq = dapm_up_seq; | |
468 | } else if (event == SND_SOC_DAPM_STREAM_STOP) { | |
469 | c = ARRAY_SIZE(dapm_down_seq); | |
470 | seq = dapm_down_seq; | |
471 | } | |
472 | ||
473 | for(i = 0; i < c; i++) { | |
474 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
475 | ||
476 | /* is widget in stream order */ | |
477 | if (seq && seq[i] && w->id != seq[i]) | |
478 | continue; | |
479 | ||
480 | /* vmid - no action */ | |
481 | if (w->id == snd_soc_dapm_vmid) | |
482 | continue; | |
483 | ||
484 | /* active ADC */ | |
485 | if (w->id == snd_soc_dapm_adc && w->active) { | |
486 | in = is_connected_input_ep(w); | |
487 | dapm_clear_walk(w->codec); | |
488 | w->power = (in != 0) ? 1 : 0; | |
489 | dapm_update_bits(w); | |
490 | continue; | |
491 | } | |
492 | ||
493 | /* active DAC */ | |
494 | if (w->id == snd_soc_dapm_dac && w->active) { | |
495 | out = is_connected_output_ep(w); | |
496 | dapm_clear_walk(w->codec); | |
497 | w->power = (out != 0) ? 1 : 0; | |
498 | dapm_update_bits(w); | |
499 | continue; | |
500 | } | |
501 | ||
502 | /* programmable gain/attenuation */ | |
503 | if (w->id == snd_soc_dapm_pga) { | |
504 | int on; | |
505 | in = is_connected_input_ep(w); | |
506 | dapm_clear_walk(w->codec); | |
507 | out = is_connected_output_ep(w); | |
508 | dapm_clear_walk(w->codec); | |
509 | w->power = on = (out != 0 && in != 0) ? 1 : 0; | |
510 | ||
511 | if (!on) | |
512 | dapm_set_pga(w, on); /* lower volume to reduce pops */ | |
513 | dapm_update_bits(w); | |
514 | if (on) | |
515 | dapm_set_pga(w, on); /* restore volume from zero */ | |
516 | ||
517 | continue; | |
518 | } | |
519 | ||
520 | /* pre and post event widgets */ | |
521 | if (w->id == snd_soc_dapm_pre) { | |
522 | if (!w->event) | |
523 | continue; | |
524 | ||
525 | if (event == SND_SOC_DAPM_STREAM_START) { | |
9af6d956 LG |
526 | ret = w->event(w, |
527 | NULL, SND_SOC_DAPM_PRE_PMU); | |
2b97eabc RP |
528 | if (ret < 0) |
529 | return ret; | |
530 | } else if (event == SND_SOC_DAPM_STREAM_STOP) { | |
9af6d956 LG |
531 | ret = w->event(w, |
532 | NULL, SND_SOC_DAPM_PRE_PMD); | |
2b97eabc RP |
533 | if (ret < 0) |
534 | return ret; | |
535 | } | |
536 | continue; | |
537 | } | |
538 | if (w->id == snd_soc_dapm_post) { | |
539 | if (!w->event) | |
540 | continue; | |
541 | ||
542 | if (event == SND_SOC_DAPM_STREAM_START) { | |
9af6d956 LG |
543 | ret = w->event(w, |
544 | NULL, SND_SOC_DAPM_POST_PMU); | |
2b97eabc RP |
545 | if (ret < 0) |
546 | return ret; | |
547 | } else if (event == SND_SOC_DAPM_STREAM_STOP) { | |
9af6d956 LG |
548 | ret = w->event(w, |
549 | NULL, SND_SOC_DAPM_POST_PMD); | |
2b97eabc RP |
550 | if (ret < 0) |
551 | return ret; | |
552 | } | |
553 | continue; | |
554 | } | |
555 | ||
556 | /* all other widgets */ | |
557 | in = is_connected_input_ep(w); | |
558 | dapm_clear_walk(w->codec); | |
559 | out = is_connected_output_ep(w); | |
560 | dapm_clear_walk(w->codec); | |
561 | power = (out != 0 && in != 0) ? 1 : 0; | |
562 | power_change = (w->power == power) ? 0: 1; | |
563 | w->power = power; | |
564 | ||
565 | /* call any power change event handlers */ | |
566 | if (power_change) { | |
567 | if (w->event) { | |
568 | dbg("power %s event for %s flags %x\n", | |
569 | w->power ? "on" : "off", w->name, w->event_flags); | |
570 | if (power) { | |
571 | /* power up event */ | |
572 | if (w->event_flags & SND_SOC_DAPM_PRE_PMU) { | |
9af6d956 LG |
573 | ret = w->event(w, |
574 | NULL, SND_SOC_DAPM_PRE_PMU); | |
2b97eabc RP |
575 | if (ret < 0) |
576 | return ret; | |
577 | } | |
578 | dapm_update_bits(w); | |
579 | if (w->event_flags & SND_SOC_DAPM_POST_PMU){ | |
9af6d956 LG |
580 | ret = w->event(w, |
581 | NULL, SND_SOC_DAPM_POST_PMU); | |
2b97eabc RP |
582 | if (ret < 0) |
583 | return ret; | |
584 | } | |
585 | } else { | |
586 | /* power down event */ | |
587 | if (w->event_flags & SND_SOC_DAPM_PRE_PMD) { | |
9af6d956 LG |
588 | ret = w->event(w, |
589 | NULL, SND_SOC_DAPM_PRE_PMD); | |
2b97eabc RP |
590 | if (ret < 0) |
591 | return ret; | |
592 | } | |
593 | dapm_update_bits(w); | |
594 | if (w->event_flags & SND_SOC_DAPM_POST_PMD) { | |
9af6d956 LG |
595 | ret = w->event(w, |
596 | NULL, SND_SOC_DAPM_POST_PMD); | |
2b97eabc RP |
597 | if (ret < 0) |
598 | return ret; | |
599 | } | |
600 | } | |
601 | } else | |
602 | /* no event handler */ | |
603 | dapm_update_bits(w); | |
604 | } | |
605 | } | |
606 | } | |
607 | ||
608 | return ret; | |
609 | } | |
610 | ||
611 | #if DAPM_DEBUG | |
612 | static void dbg_dump_dapm(struct snd_soc_codec* codec, const char *action) | |
613 | { | |
614 | struct snd_soc_dapm_widget *w; | |
615 | struct snd_soc_dapm_path *p = NULL; | |
616 | int in, out; | |
617 | ||
618 | printk("DAPM %s %s\n", codec->name, action); | |
619 | ||
620 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
621 | ||
622 | /* only display widgets that effect routing */ | |
623 | switch (w->id) { | |
624 | case snd_soc_dapm_pre: | |
625 | case snd_soc_dapm_post: | |
626 | case snd_soc_dapm_vmid: | |
627 | continue; | |
628 | case snd_soc_dapm_mux: | |
629 | case snd_soc_dapm_output: | |
630 | case snd_soc_dapm_input: | |
631 | case snd_soc_dapm_switch: | |
632 | case snd_soc_dapm_hp: | |
633 | case snd_soc_dapm_mic: | |
634 | case snd_soc_dapm_spk: | |
635 | case snd_soc_dapm_line: | |
636 | case snd_soc_dapm_micbias: | |
637 | case snd_soc_dapm_dac: | |
638 | case snd_soc_dapm_adc: | |
639 | case snd_soc_dapm_pga: | |
640 | case snd_soc_dapm_mixer: | |
641 | if (w->name) { | |
642 | in = is_connected_input_ep(w); | |
643 | dapm_clear_walk(w->codec); | |
644 | out = is_connected_output_ep(w); | |
645 | dapm_clear_walk(w->codec); | |
646 | printk("%s: %s in %d out %d\n", w->name, | |
647 | w->power ? "On":"Off",in, out); | |
648 | ||
649 | list_for_each_entry(p, &w->sources, list_sink) { | |
650 | if (p->connect) | |
651 | printk(" in %s %s\n", p->name ? p->name : "static", | |
652 | p->source->name); | |
653 | } | |
654 | list_for_each_entry(p, &w->sinks, list_source) { | |
2b97eabc RP |
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 */ | |
d9c96cf3 AB |
667 | static int dapm_mux_update_power(struct snd_soc_dapm_widget *widget, |
668 | struct snd_kcontrol *kcontrol, int mask, | |
669 | int val, struct soc_enum* e) | |
2b97eabc RP |
670 | { |
671 | struct snd_soc_dapm_path *path; | |
672 | int found = 0; | |
673 | ||
674 | if (widget->id != snd_soc_dapm_mux) | |
675 | return -ENODEV; | |
676 | ||
677 | if (!snd_soc_test_bits(widget->codec, e->reg, mask, val)) | |
678 | return 0; | |
679 | ||
680 | /* find dapm widget path assoc with kcontrol */ | |
681 | list_for_each_entry(path, &widget->codec->dapm_paths, list) { | |
682 | if (path->kcontrol != kcontrol) | |
683 | continue; | |
684 | ||
685 | if (!path->name || ! e->texts[val]) | |
686 | continue; | |
687 | ||
688 | found = 1; | |
689 | /* we now need to match the string in the enum to the path */ | |
690 | if (!(strcmp(path->name, e->texts[val]))) | |
691 | path->connect = 1; /* new connection */ | |
692 | else | |
693 | path->connect = 0; /* old connection must be powered down */ | |
694 | } | |
695 | ||
696 | if (found) | |
697 | dapm_power_widgets(widget->codec, SND_SOC_DAPM_STREAM_NOP); | |
698 | ||
699 | return 0; | |
700 | } | |
2b97eabc | 701 | |
1b075e3f | 702 | /* test and update the power status of a mixer or switch widget */ |
d9c96cf3 AB |
703 | static int dapm_mixer_update_power(struct snd_soc_dapm_widget *widget, |
704 | struct snd_kcontrol *kcontrol, int reg, | |
705 | int val_mask, int val, int invert) | |
2b97eabc RP |
706 | { |
707 | struct snd_soc_dapm_path *path; | |
708 | int found = 0; | |
709 | ||
1b075e3f M |
710 | if (widget->id != snd_soc_dapm_mixer && |
711 | widget->id != snd_soc_dapm_switch) | |
2b97eabc RP |
712 | return -ENODEV; |
713 | ||
714 | if (!snd_soc_test_bits(widget->codec, reg, val_mask, val)) | |
715 | return 0; | |
716 | ||
717 | /* find dapm widget path assoc with kcontrol */ | |
718 | list_for_each_entry(path, &widget->codec->dapm_paths, list) { | |
719 | if (path->kcontrol != kcontrol) | |
720 | continue; | |
721 | ||
722 | /* found, now check type */ | |
723 | found = 1; | |
724 | if (val) | |
725 | /* new connection */ | |
726 | path->connect = invert ? 0:1; | |
727 | else | |
728 | /* old connection must be powered down */ | |
729 | path->connect = invert ? 1:0; | |
730 | break; | |
731 | } | |
732 | ||
733 | if (found) | |
734 | dapm_power_widgets(widget->codec, SND_SOC_DAPM_STREAM_NOP); | |
735 | ||
736 | return 0; | |
737 | } | |
2b97eabc RP |
738 | |
739 | /* show dapm widget status in sys fs */ | |
740 | static ssize_t dapm_widget_show(struct device *dev, | |
741 | struct device_attribute *attr, char *buf) | |
742 | { | |
743 | struct snd_soc_device *devdata = dev_get_drvdata(dev); | |
744 | struct snd_soc_codec *codec = devdata->codec; | |
745 | struct snd_soc_dapm_widget *w; | |
746 | int count = 0; | |
747 | char *state = "not set"; | |
748 | ||
749 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
750 | ||
751 | /* only display widgets that burnm power */ | |
752 | switch (w->id) { | |
753 | case snd_soc_dapm_hp: | |
754 | case snd_soc_dapm_mic: | |
755 | case snd_soc_dapm_spk: | |
756 | case snd_soc_dapm_line: | |
757 | case snd_soc_dapm_micbias: | |
758 | case snd_soc_dapm_dac: | |
759 | case snd_soc_dapm_adc: | |
760 | case snd_soc_dapm_pga: | |
761 | case snd_soc_dapm_mixer: | |
762 | if (w->name) | |
763 | count += sprintf(buf + count, "%s: %s\n", | |
764 | w->name, w->power ? "On":"Off"); | |
765 | break; | |
766 | default: | |
767 | break; | |
768 | } | |
769 | } | |
770 | ||
771 | switch(codec->dapm_state){ | |
772 | case SNDRV_CTL_POWER_D0: | |
773 | state = "D0"; | |
774 | break; | |
775 | case SNDRV_CTL_POWER_D1: | |
776 | state = "D1"; | |
777 | break; | |
778 | case SNDRV_CTL_POWER_D2: | |
779 | state = "D2"; | |
780 | break; | |
781 | case SNDRV_CTL_POWER_D3hot: | |
782 | state = "D3hot"; | |
783 | break; | |
784 | case SNDRV_CTL_POWER_D3cold: | |
785 | state = "D3cold"; | |
786 | break; | |
787 | } | |
788 | count += sprintf(buf + count, "PM State: %s\n", state); | |
789 | ||
790 | return count; | |
791 | } | |
792 | ||
793 | static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL); | |
794 | ||
795 | int snd_soc_dapm_sys_add(struct device *dev) | |
796 | { | |
797 | int ret = 0; | |
798 | ||
799 | if (dapm_status) | |
800 | ret = device_create_file(dev, &dev_attr_dapm_widget); | |
801 | ||
802 | return ret; | |
803 | } | |
804 | ||
805 | static void snd_soc_dapm_sys_remove(struct device *dev) | |
806 | { | |
807 | if (dapm_status) | |
808 | device_remove_file(dev, &dev_attr_dapm_widget); | |
809 | } | |
810 | ||
811 | /* free all dapm widgets and resources */ | |
d9c96cf3 | 812 | static void dapm_free_widgets(struct snd_soc_codec *codec) |
2b97eabc RP |
813 | { |
814 | struct snd_soc_dapm_widget *w, *next_w; | |
815 | struct snd_soc_dapm_path *p, *next_p; | |
816 | ||
817 | list_for_each_entry_safe(w, next_w, &codec->dapm_widgets, list) { | |
818 | list_del(&w->list); | |
819 | kfree(w); | |
820 | } | |
821 | ||
822 | list_for_each_entry_safe(p, next_p, &codec->dapm_paths, list) { | |
823 | list_del(&p->list); | |
824 | kfree(p->long_name); | |
825 | kfree(p); | |
826 | } | |
827 | } | |
828 | ||
829 | /** | |
830 | * snd_soc_dapm_sync_endpoints - scan and power dapm paths | |
831 | * @codec: audio codec | |
832 | * | |
833 | * Walks all dapm audio paths and powers widgets according to their | |
834 | * stream or path usage. | |
835 | * | |
836 | * Returns 0 for success. | |
837 | */ | |
838 | int snd_soc_dapm_sync_endpoints(struct snd_soc_codec *codec) | |
839 | { | |
840 | return dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP); | |
841 | } | |
842 | EXPORT_SYMBOL_GPL(snd_soc_dapm_sync_endpoints); | |
843 | ||
844 | /** | |
845 | * snd_soc_dapm_connect_input - connect dapm widgets | |
846 | * @codec: audio codec | |
847 | * @sink: name of target widget | |
848 | * @control: mixer control name | |
849 | * @source: name of source name | |
850 | * | |
851 | * Connects 2 dapm widgets together via a named audio path. The sink is | |
852 | * the widget receiving the audio signal, whilst the source is the sender | |
853 | * of the audio signal. | |
854 | * | |
855 | * Returns 0 for success else error. | |
856 | */ | |
857 | int snd_soc_dapm_connect_input(struct snd_soc_codec *codec, const char *sink, | |
858 | const char * control, const char *source) | |
859 | { | |
860 | struct snd_soc_dapm_path *path; | |
861 | struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w; | |
862 | int ret = 0; | |
863 | ||
864 | /* find src and dest widgets */ | |
865 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
866 | ||
867 | if (!wsink && !(strcmp(w->name, sink))) { | |
868 | wsink = w; | |
869 | continue; | |
870 | } | |
871 | if (!wsource && !(strcmp(w->name, source))) { | |
872 | wsource = w; | |
873 | } | |
874 | } | |
875 | ||
876 | if (wsource == NULL || wsink == NULL) | |
877 | return -ENODEV; | |
878 | ||
879 | path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL); | |
880 | if (!path) | |
881 | return -ENOMEM; | |
882 | ||
883 | path->source = wsource; | |
884 | path->sink = wsink; | |
885 | INIT_LIST_HEAD(&path->list); | |
886 | INIT_LIST_HEAD(&path->list_source); | |
887 | INIT_LIST_HEAD(&path->list_sink); | |
888 | ||
889 | /* check for external widgets */ | |
890 | if (wsink->id == snd_soc_dapm_input) { | |
891 | if (wsource->id == snd_soc_dapm_micbias || | |
892 | wsource->id == snd_soc_dapm_mic || | |
1e39221e SF |
893 | wsink->id == snd_soc_dapm_line || |
894 | wsink->id == snd_soc_dapm_output) | |
2b97eabc RP |
895 | wsink->ext = 1; |
896 | } | |
897 | if (wsource->id == snd_soc_dapm_output) { | |
898 | if (wsink->id == snd_soc_dapm_spk || | |
899 | wsink->id == snd_soc_dapm_hp || | |
1e39221e SF |
900 | wsink->id == snd_soc_dapm_line || |
901 | wsink->id == snd_soc_dapm_input) | |
2b97eabc RP |
902 | wsource->ext = 1; |
903 | } | |
904 | ||
905 | /* connect static paths */ | |
906 | if (control == NULL) { | |
907 | list_add(&path->list, &codec->dapm_paths); | |
908 | list_add(&path->list_sink, &wsink->sources); | |
909 | list_add(&path->list_source, &wsource->sinks); | |
910 | path->connect = 1; | |
911 | return 0; | |
912 | } | |
913 | ||
914 | /* connect dynamic paths */ | |
915 | switch(wsink->id) { | |
916 | case snd_soc_dapm_adc: | |
917 | case snd_soc_dapm_dac: | |
918 | case snd_soc_dapm_pga: | |
919 | case snd_soc_dapm_input: | |
920 | case snd_soc_dapm_output: | |
921 | case snd_soc_dapm_micbias: | |
922 | case snd_soc_dapm_vmid: | |
923 | case snd_soc_dapm_pre: | |
924 | case snd_soc_dapm_post: | |
925 | list_add(&path->list, &codec->dapm_paths); | |
926 | list_add(&path->list_sink, &wsink->sources); | |
927 | list_add(&path->list_source, &wsource->sinks); | |
928 | path->connect = 1; | |
929 | return 0; | |
930 | case snd_soc_dapm_mux: | |
931 | ret = dapm_connect_mux(codec, wsource, wsink, path, control, | |
932 | &wsink->kcontrols[0]); | |
933 | if (ret != 0) | |
934 | goto err; | |
935 | break; | |
936 | case snd_soc_dapm_switch: | |
937 | case snd_soc_dapm_mixer: | |
938 | ret = dapm_connect_mixer(codec, wsource, wsink, path, control); | |
939 | if (ret != 0) | |
940 | goto err; | |
941 | break; | |
942 | case snd_soc_dapm_hp: | |
943 | case snd_soc_dapm_mic: | |
944 | case snd_soc_dapm_line: | |
945 | case snd_soc_dapm_spk: | |
946 | list_add(&path->list, &codec->dapm_paths); | |
947 | list_add(&path->list_sink, &wsink->sources); | |
948 | list_add(&path->list_source, &wsource->sinks); | |
949 | path->connect = 0; | |
950 | return 0; | |
951 | } | |
952 | return 0; | |
953 | ||
954 | err: | |
955 | printk(KERN_WARNING "asoc: no dapm match for %s --> %s --> %s\n", source, | |
956 | control, sink); | |
957 | kfree(path); | |
958 | return ret; | |
959 | } | |
960 | EXPORT_SYMBOL_GPL(snd_soc_dapm_connect_input); | |
961 | ||
962 | /** | |
963 | * snd_soc_dapm_new_widgets - add new dapm widgets | |
964 | * @codec: audio codec | |
965 | * | |
966 | * Checks the codec for any new dapm widgets and creates them if found. | |
967 | * | |
968 | * Returns 0 for success. | |
969 | */ | |
970 | int snd_soc_dapm_new_widgets(struct snd_soc_codec *codec) | |
971 | { | |
972 | struct snd_soc_dapm_widget *w; | |
973 | ||
2b97eabc RP |
974 | list_for_each_entry(w, &codec->dapm_widgets, list) |
975 | { | |
976 | if (w->new) | |
977 | continue; | |
978 | ||
979 | switch(w->id) { | |
980 | case snd_soc_dapm_switch: | |
981 | case snd_soc_dapm_mixer: | |
982 | dapm_new_mixer(codec, w); | |
983 | break; | |
984 | case snd_soc_dapm_mux: | |
985 | dapm_new_mux(codec, w); | |
986 | break; | |
987 | case snd_soc_dapm_adc: | |
988 | case snd_soc_dapm_dac: | |
989 | case snd_soc_dapm_pga: | |
990 | dapm_new_pga(codec, w); | |
991 | break; | |
992 | case snd_soc_dapm_input: | |
993 | case snd_soc_dapm_output: | |
994 | case snd_soc_dapm_micbias: | |
995 | case snd_soc_dapm_spk: | |
996 | case snd_soc_dapm_hp: | |
997 | case snd_soc_dapm_mic: | |
998 | case snd_soc_dapm_line: | |
999 | case snd_soc_dapm_vmid: | |
1000 | case snd_soc_dapm_pre: | |
1001 | case snd_soc_dapm_post: | |
1002 | break; | |
1003 | } | |
1004 | w->new = 1; | |
1005 | } | |
1006 | ||
1007 | dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP); | |
2b97eabc RP |
1008 | return 0; |
1009 | } | |
1010 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets); | |
1011 | ||
1012 | /** | |
1013 | * snd_soc_dapm_get_volsw - dapm mixer get callback | |
1014 | * @kcontrol: mixer control | |
1015 | * @uinfo: control element information | |
1016 | * | |
1017 | * Callback to get the value of a dapm mixer control. | |
1018 | * | |
1019 | * Returns 0 for success. | |
1020 | */ | |
1021 | int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol, | |
1022 | struct snd_ctl_elem_value *ucontrol) | |
1023 | { | |
1024 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1025 | int reg = kcontrol->private_value & 0xff; | |
1026 | int shift = (kcontrol->private_value >> 8) & 0x0f; | |
1027 | int rshift = (kcontrol->private_value >> 12) & 0x0f; | |
a7a4ac86 | 1028 | int max = (kcontrol->private_value >> 16) & 0xff; |
2b97eabc | 1029 | int invert = (kcontrol->private_value >> 24) & 0x01; |
a7a4ac86 | 1030 | int mask = (1 << fls(max)) - 1; |
2b97eabc RP |
1031 | |
1032 | /* return the saved value if we are powered down */ | |
1033 | if (widget->id == snd_soc_dapm_pga && !widget->power) { | |
1034 | ucontrol->value.integer.value[0] = widget->saved_value; | |
1035 | return 0; | |
1036 | } | |
1037 | ||
1038 | ucontrol->value.integer.value[0] = | |
1039 | (snd_soc_read(widget->codec, reg) >> shift) & mask; | |
1040 | if (shift != rshift) | |
1041 | ucontrol->value.integer.value[1] = | |
1042 | (snd_soc_read(widget->codec, reg) >> rshift) & mask; | |
1043 | if (invert) { | |
1044 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1045 | max - ucontrol->value.integer.value[0]; |
2b97eabc RP |
1046 | if (shift != rshift) |
1047 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 1048 | max - ucontrol->value.integer.value[1]; |
2b97eabc RP |
1049 | } |
1050 | ||
1051 | return 0; | |
1052 | } | |
1053 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw); | |
1054 | ||
1055 | /** | |
1056 | * snd_soc_dapm_put_volsw - dapm mixer set callback | |
1057 | * @kcontrol: mixer control | |
1058 | * @uinfo: control element information | |
1059 | * | |
1060 | * Callback to set the value of a dapm mixer control. | |
1061 | * | |
1062 | * Returns 0 for success. | |
1063 | */ | |
1064 | int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, | |
1065 | struct snd_ctl_elem_value *ucontrol) | |
1066 | { | |
1067 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1068 | int reg = kcontrol->private_value & 0xff; | |
1069 | int shift = (kcontrol->private_value >> 8) & 0x0f; | |
1070 | int rshift = (kcontrol->private_value >> 12) & 0x0f; | |
a7a4ac86 PZ |
1071 | int max = (kcontrol->private_value >> 16) & 0xff; |
1072 | int mask = (1 << fls(max)) - 1; | |
2b97eabc RP |
1073 | int invert = (kcontrol->private_value >> 24) & 0x01; |
1074 | unsigned short val, val2, val_mask; | |
1075 | int ret; | |
1076 | ||
1077 | val = (ucontrol->value.integer.value[0] & mask); | |
1078 | ||
1079 | if (invert) | |
a7a4ac86 | 1080 | val = max - val; |
2b97eabc RP |
1081 | val_mask = mask << shift; |
1082 | val = val << shift; | |
1083 | if (shift != rshift) { | |
1084 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1085 | if (invert) | |
a7a4ac86 | 1086 | val2 = max - val2; |
2b97eabc RP |
1087 | val_mask |= mask << rshift; |
1088 | val |= val2 << rshift; | |
1089 | } | |
1090 | ||
1091 | mutex_lock(&widget->codec->mutex); | |
1092 | widget->value = val; | |
1093 | ||
1094 | /* save volume value if the widget is powered down */ | |
1095 | if (widget->id == snd_soc_dapm_pga && !widget->power) { | |
1096 | widget->saved_value = val; | |
1097 | mutex_unlock(&widget->codec->mutex); | |
1098 | return 1; | |
1099 | } | |
1100 | ||
1101 | dapm_mixer_update_power(widget, kcontrol, reg, val_mask, val, invert); | |
1102 | if (widget->event) { | |
1103 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
9af6d956 LG |
1104 | ret = widget->event(widget, kcontrol, |
1105 | SND_SOC_DAPM_PRE_REG); | |
1106 | if (ret < 0) { | |
1107 | ret = 1; | |
2b97eabc | 1108 | goto out; |
9af6d956 | 1109 | } |
2b97eabc RP |
1110 | } |
1111 | ret = snd_soc_update_bits(widget->codec, reg, val_mask, val); | |
1112 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
9af6d956 LG |
1113 | ret = widget->event(widget, kcontrol, |
1114 | SND_SOC_DAPM_POST_REG); | |
2b97eabc RP |
1115 | } else |
1116 | ret = snd_soc_update_bits(widget->codec, reg, val_mask, val); | |
1117 | ||
1118 | out: | |
1119 | mutex_unlock(&widget->codec->mutex); | |
1120 | return ret; | |
1121 | } | |
1122 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw); | |
1123 | ||
1124 | /** | |
1125 | * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback | |
1126 | * @kcontrol: mixer control | |
1127 | * @uinfo: control element information | |
1128 | * | |
1129 | * Callback to get the value of a dapm enumerated double mixer control. | |
1130 | * | |
1131 | * Returns 0 for success. | |
1132 | */ | |
1133 | int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol, | |
1134 | struct snd_ctl_elem_value *ucontrol) | |
1135 | { | |
1136 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1137 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1138 | unsigned short val, bitmask; | |
1139 | ||
1140 | for (bitmask = 1; bitmask < e->mask; bitmask <<= 1) | |
1141 | ; | |
1142 | val = snd_soc_read(widget->codec, e->reg); | |
1143 | ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1); | |
1144 | if (e->shift_l != e->shift_r) | |
1145 | ucontrol->value.enumerated.item[1] = | |
1146 | (val >> e->shift_r) & (bitmask - 1); | |
1147 | ||
1148 | return 0; | |
1149 | } | |
1150 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double); | |
1151 | ||
1152 | /** | |
1153 | * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback | |
1154 | * @kcontrol: mixer control | |
1155 | * @uinfo: control element information | |
1156 | * | |
1157 | * Callback to set the value of a dapm enumerated double mixer control. | |
1158 | * | |
1159 | * Returns 0 for success. | |
1160 | */ | |
1161 | int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, | |
1162 | struct snd_ctl_elem_value *ucontrol) | |
1163 | { | |
1164 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1165 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1166 | unsigned short val, mux; | |
1167 | unsigned short mask, bitmask; | |
1168 | int ret = 0; | |
1169 | ||
1170 | for (bitmask = 1; bitmask < e->mask; bitmask <<= 1) | |
1171 | ; | |
1172 | if (ucontrol->value.enumerated.item[0] > e->mask - 1) | |
1173 | return -EINVAL; | |
1174 | mux = ucontrol->value.enumerated.item[0]; | |
1175 | val = mux << e->shift_l; | |
1176 | mask = (bitmask - 1) << e->shift_l; | |
1177 | if (e->shift_l != e->shift_r) { | |
1178 | if (ucontrol->value.enumerated.item[1] > e->mask - 1) | |
1179 | return -EINVAL; | |
1180 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
1181 | mask |= (bitmask - 1) << e->shift_r; | |
1182 | } | |
1183 | ||
1184 | mutex_lock(&widget->codec->mutex); | |
1185 | widget->value = val; | |
1186 | dapm_mux_update_power(widget, kcontrol, mask, mux, e); | |
1187 | if (widget->event) { | |
1188 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
9af6d956 LG |
1189 | ret = widget->event(widget, |
1190 | kcontrol, SND_SOC_DAPM_PRE_REG); | |
2b97eabc RP |
1191 | if (ret < 0) |
1192 | goto out; | |
1193 | } | |
1194 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1195 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
9af6d956 LG |
1196 | ret = widget->event(widget, |
1197 | kcontrol, SND_SOC_DAPM_POST_REG); | |
2b97eabc RP |
1198 | } else |
1199 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1200 | ||
1201 | out: | |
1202 | mutex_unlock(&widget->codec->mutex); | |
1203 | return ret; | |
1204 | } | |
1205 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double); | |
1206 | ||
1207 | /** | |
1208 | * snd_soc_dapm_new_control - create new dapm control | |
1209 | * @codec: audio codec | |
1210 | * @widget: widget template | |
1211 | * | |
1212 | * Creates a new dapm control based upon the template. | |
1213 | * | |
1214 | * Returns 0 for success else error. | |
1215 | */ | |
1216 | int snd_soc_dapm_new_control(struct snd_soc_codec *codec, | |
1217 | const struct snd_soc_dapm_widget *widget) | |
1218 | { | |
1219 | struct snd_soc_dapm_widget *w; | |
1220 | ||
1221 | if ((w = dapm_cnew_widget(widget)) == NULL) | |
1222 | return -ENOMEM; | |
1223 | ||
1224 | w->codec = codec; | |
1225 | INIT_LIST_HEAD(&w->sources); | |
1226 | INIT_LIST_HEAD(&w->sinks); | |
1227 | INIT_LIST_HEAD(&w->list); | |
1228 | list_add(&w->list, &codec->dapm_widgets); | |
1229 | ||
1230 | /* machine layer set ups unconnected pins and insertions */ | |
1231 | w->connected = 1; | |
1232 | return 0; | |
1233 | } | |
1234 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control); | |
1235 | ||
1236 | /** | |
1237 | * snd_soc_dapm_stream_event - send a stream event to the dapm core | |
1238 | * @codec: audio codec | |
1239 | * @stream: stream name | |
1240 | * @event: stream event | |
1241 | * | |
1242 | * Sends a stream event to the dapm core. The core then makes any | |
1243 | * necessary widget power changes. | |
1244 | * | |
1245 | * Returns 0 for success else error. | |
1246 | */ | |
1247 | int snd_soc_dapm_stream_event(struct snd_soc_codec *codec, | |
1248 | char *stream, int event) | |
1249 | { | |
1250 | struct snd_soc_dapm_widget *w; | |
1251 | ||
11da21a7 SF |
1252 | if (stream == NULL) |
1253 | return 0; | |
1254 | ||
2b97eabc RP |
1255 | mutex_lock(&codec->mutex); |
1256 | list_for_each_entry(w, &codec->dapm_widgets, list) | |
1257 | { | |
1258 | if (!w->sname) | |
1259 | continue; | |
1260 | dbg("widget %s\n %s stream %s event %d\n", w->name, w->sname, | |
1261 | stream, event); | |
1262 | if (strstr(w->sname, stream)) { | |
1263 | switch(event) { | |
1264 | case SND_SOC_DAPM_STREAM_START: | |
1265 | w->active = 1; | |
1266 | break; | |
1267 | case SND_SOC_DAPM_STREAM_STOP: | |
1268 | w->active = 0; | |
1269 | break; | |
1270 | case SND_SOC_DAPM_STREAM_SUSPEND: | |
1271 | if (w->active) | |
1272 | w->suspend = 1; | |
1273 | w->active = 0; | |
1274 | break; | |
1275 | case SND_SOC_DAPM_STREAM_RESUME: | |
1276 | if (w->suspend) { | |
1277 | w->active = 1; | |
1278 | w->suspend = 0; | |
1279 | } | |
1280 | break; | |
1281 | case SND_SOC_DAPM_STREAM_PAUSE_PUSH: | |
1282 | break; | |
1283 | case SND_SOC_DAPM_STREAM_PAUSE_RELEASE: | |
1284 | break; | |
1285 | } | |
1286 | } | |
1287 | } | |
1288 | mutex_unlock(&codec->mutex); | |
1289 | ||
1290 | dapm_power_widgets(codec, event); | |
9bf8e7dd | 1291 | dump_dapm(codec, __func__); |
2b97eabc RP |
1292 | return 0; |
1293 | } | |
1294 | EXPORT_SYMBOL_GPL(snd_soc_dapm_stream_event); | |
1295 | ||
0b4d221b LG |
1296 | /** |
1297 | * snd_soc_dapm_device_event - send a device event to the dapm core | |
1298 | * @socdev: audio device | |
1299 | * @event: device event | |
1300 | * | |
1301 | * Sends a device event to the dapm core. The core then makes any | |
1302 | * necessary machine or codec power changes.. | |
1303 | * | |
1304 | * Returns 0 for success else error. | |
1305 | */ | |
1306 | int snd_soc_dapm_device_event(struct snd_soc_device *socdev, int event) | |
1307 | { | |
1308 | struct snd_soc_codec *codec = socdev->codec; | |
1309 | struct snd_soc_machine *machine = socdev->machine; | |
1310 | ||
1311 | if (machine->dapm_event) | |
6c59e6c4 | 1312 | machine->dapm_event(machine, event); |
0b4d221b | 1313 | if (codec->dapm_event) |
6c59e6c4 | 1314 | codec->dapm_event(codec, event); |
0b4d221b LG |
1315 | return 0; |
1316 | } | |
1317 | EXPORT_SYMBOL_GPL(snd_soc_dapm_device_event); | |
1318 | ||
2b97eabc RP |
1319 | /** |
1320 | * snd_soc_dapm_set_endpoint - set audio endpoint status | |
1321 | * @codec: audio codec | |
1322 | * @endpoint: audio signal endpoint (or start point) | |
1323 | * @status: point status | |
1324 | * | |
1325 | * Set audio endpoint status - connected or disconnected. | |
1326 | * | |
1327 | * Returns 0 for success else error. | |
1328 | */ | |
1329 | int snd_soc_dapm_set_endpoint(struct snd_soc_codec *codec, | |
1330 | char *endpoint, int status) | |
1331 | { | |
1332 | struct snd_soc_dapm_widget *w; | |
1333 | ||
1334 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
1335 | if (!strcmp(w->name, endpoint)) { | |
1336 | w->connected = status; | |
964a788e | 1337 | return 0; |
2b97eabc RP |
1338 | } |
1339 | } | |
1340 | ||
964a788e | 1341 | return -ENODEV; |
2b97eabc RP |
1342 | } |
1343 | EXPORT_SYMBOL_GPL(snd_soc_dapm_set_endpoint); | |
1344 | ||
1345 | /** | |
1346 | * snd_soc_dapm_free - free dapm resources | |
1347 | * @socdev: SoC device | |
1348 | * | |
1349 | * Free all dapm widgets and resources. | |
1350 | */ | |
1351 | void snd_soc_dapm_free(struct snd_soc_device *socdev) | |
1352 | { | |
1353 | struct snd_soc_codec *codec = socdev->codec; | |
1354 | ||
1355 | snd_soc_dapm_sys_remove(socdev->dev); | |
1356 | dapm_free_widgets(codec); | |
1357 | } | |
1358 | EXPORT_SYMBOL_GPL(snd_soc_dapm_free); | |
1359 | ||
1360 | /* Module information */ | |
1361 | MODULE_AUTHOR("Liam Girdwood, liam.girdwood@wolfsonmicro.com, www.wolfsonmicro.com"); | |
1362 | MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC"); | |
1363 | MODULE_LICENSE("GPL"); |