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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 | * | |
2b97eabc RP |
13 | * Features: |
14 | * o Changes power status of internal codec blocks depending on the | |
15 | * dynamic configuration of codec internal audio paths and active | |
16 | * DAC's/ADC's. | |
17 | * o Platform power domain - can support external components i.e. amps and | |
18 | * mic/meadphone insertion events. | |
19 | * o Automatic Mic Bias support | |
20 | * o Jack insertion power event initiation - e.g. hp insertion will enable | |
21 | * sinks, dacs, etc | |
3a4fa0a2 | 22 | * o Delayed powerdown of audio susbsystem to reduce pops between a quick |
2b97eabc RP |
23 | * device reopen. |
24 | * | |
25 | * Todo: | |
26 | * o DAPM power change sequencing - allow for configurable per | |
27 | * codec sequences. | |
28 | * o Support for analogue bias optimisation. | |
29 | * o Support for reduced codec oversampling rates. | |
30 | * o Support for reduced codec bias currents. | |
31 | */ | |
32 | ||
33 | #include <linux/module.h> | |
34 | #include <linux/moduleparam.h> | |
35 | #include <linux/init.h> | |
36 | #include <linux/delay.h> | |
37 | #include <linux/pm.h> | |
38 | #include <linux/bitops.h> | |
39 | #include <linux/platform_device.h> | |
40 | #include <linux/jiffies.h> | |
2b97eabc RP |
41 | #include <sound/core.h> |
42 | #include <sound/pcm.h> | |
43 | #include <sound/pcm_params.h> | |
44 | #include <sound/soc-dapm.h> | |
45 | #include <sound/initval.h> | |
46 | ||
47 | /* debug */ | |
c1286b86 | 48 | #ifdef DEBUG |
2b97eabc | 49 | #define dump_dapm(codec, action) dbg_dump_dapm(codec, action) |
2b97eabc RP |
50 | #else |
51 | #define dump_dapm(codec, action) | |
2b97eabc RP |
52 | #endif |
53 | ||
2b97eabc RP |
54 | /* dapm power sequences - make this per codec in the future */ |
55 | static int dapm_up_seq[] = { | |
56 | snd_soc_dapm_pre, snd_soc_dapm_micbias, snd_soc_dapm_mic, | |
57 | snd_soc_dapm_mux, snd_soc_dapm_dac, snd_soc_dapm_mixer, snd_soc_dapm_pga, | |
58 | snd_soc_dapm_adc, snd_soc_dapm_hp, snd_soc_dapm_spk, snd_soc_dapm_post | |
59 | }; | |
60 | static int dapm_down_seq[] = { | |
61 | snd_soc_dapm_pre, snd_soc_dapm_adc, snd_soc_dapm_hp, snd_soc_dapm_spk, | |
62 | snd_soc_dapm_pga, snd_soc_dapm_mixer, snd_soc_dapm_dac, snd_soc_dapm_mic, | |
63 | snd_soc_dapm_micbias, snd_soc_dapm_mux, snd_soc_dapm_post | |
64 | }; | |
65 | ||
66 | static int dapm_status = 1; | |
67 | module_param(dapm_status, int, 0); | |
68 | MODULE_PARM_DESC(dapm_status, "enable DPM sysfs entries"); | |
69 | ||
15e4c72f MB |
70 | static unsigned int pop_time; |
71 | ||
72 | static void pop_wait(void) | |
73 | { | |
74 | if (pop_time) | |
75 | schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time)); | |
76 | } | |
77 | ||
78 | static void pop_dbg(const char *fmt, ...) | |
79 | { | |
80 | va_list args; | |
81 | ||
82 | va_start(args, fmt); | |
83 | ||
84 | if (pop_time) { | |
85 | vprintk(fmt, args); | |
86 | pop_wait(); | |
87 | } | |
88 | ||
89 | va_end(args); | |
90 | } | |
91 | ||
2b97eabc | 92 | /* create a new dapm widget */ |
88cb4290 | 93 | static inline struct snd_soc_dapm_widget *dapm_cnew_widget( |
2b97eabc RP |
94 | const struct snd_soc_dapm_widget *_widget) |
95 | { | |
88cb4290 | 96 | return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL); |
2b97eabc RP |
97 | } |
98 | ||
99 | /* set up initial codec paths */ | |
100 | static void dapm_set_path_status(struct snd_soc_dapm_widget *w, | |
101 | struct snd_soc_dapm_path *p, int i) | |
102 | { | |
103 | switch (w->id) { | |
104 | case snd_soc_dapm_switch: | |
105 | case snd_soc_dapm_mixer: { | |
106 | int val; | |
107 | int reg = w->kcontrols[i].private_value & 0xff; | |
108 | int shift = (w->kcontrols[i].private_value >> 8) & 0x0f; | |
109 | int mask = (w->kcontrols[i].private_value >> 16) & 0xff; | |
110 | int invert = (w->kcontrols[i].private_value >> 24) & 0x01; | |
111 | ||
112 | val = snd_soc_read(w->codec, reg); | |
113 | val = (val >> shift) & mask; | |
114 | ||
115 | if ((invert && !val) || (!invert && val)) | |
116 | p->connect = 1; | |
117 | else | |
118 | p->connect = 0; | |
119 | } | |
120 | break; | |
121 | case snd_soc_dapm_mux: { | |
122 | struct soc_enum *e = (struct soc_enum *)w->kcontrols[i].private_value; | |
123 | int val, item, bitmask; | |
124 | ||
125 | for (bitmask = 1; bitmask < e->mask; bitmask <<= 1) | |
126 | ; | |
127 | val = snd_soc_read(w->codec, e->reg); | |
128 | item = (val >> e->shift_l) & (bitmask - 1); | |
129 | ||
130 | p->connect = 0; | |
131 | for (i = 0; i < e->mask; i++) { | |
132 | if (!(strcmp(p->name, e->texts[i])) && item == i) | |
133 | p->connect = 1; | |
134 | } | |
135 | } | |
136 | break; | |
137 | /* does not effect routing - always connected */ | |
138 | case snd_soc_dapm_pga: | |
139 | case snd_soc_dapm_output: | |
140 | case snd_soc_dapm_adc: | |
141 | case snd_soc_dapm_input: | |
142 | case snd_soc_dapm_dac: | |
143 | case snd_soc_dapm_micbias: | |
144 | case snd_soc_dapm_vmid: | |
145 | p->connect = 1; | |
146 | break; | |
147 | /* does effect routing - dynamically connected */ | |
148 | case snd_soc_dapm_hp: | |
149 | case snd_soc_dapm_mic: | |
150 | case snd_soc_dapm_spk: | |
151 | case snd_soc_dapm_line: | |
152 | case snd_soc_dapm_pre: | |
153 | case snd_soc_dapm_post: | |
154 | p->connect = 0; | |
155 | break; | |
156 | } | |
157 | } | |
158 | ||
159 | /* connect mux widget to it's interconnecting audio paths */ | |
160 | static int dapm_connect_mux(struct snd_soc_codec *codec, | |
161 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, | |
162 | struct snd_soc_dapm_path *path, const char *control_name, | |
163 | const struct snd_kcontrol_new *kcontrol) | |
164 | { | |
165 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
166 | int i; | |
167 | ||
168 | for (i = 0; i < e->mask; i++) { | |
169 | if (!(strcmp(control_name, e->texts[i]))) { | |
170 | list_add(&path->list, &codec->dapm_paths); | |
171 | list_add(&path->list_sink, &dest->sources); | |
172 | list_add(&path->list_source, &src->sinks); | |
173 | path->name = (char*)e->texts[i]; | |
174 | dapm_set_path_status(dest, path, 0); | |
175 | return 0; | |
176 | } | |
177 | } | |
178 | ||
179 | return -ENODEV; | |
180 | } | |
181 | ||
182 | /* connect mixer widget to it's interconnecting audio paths */ | |
183 | static int dapm_connect_mixer(struct snd_soc_codec *codec, | |
184 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, | |
185 | struct snd_soc_dapm_path *path, const char *control_name) | |
186 | { | |
187 | int i; | |
188 | ||
189 | /* search for mixer kcontrol */ | |
190 | for (i = 0; i < dest->num_kcontrols; i++) { | |
191 | if (!strcmp(control_name, dest->kcontrols[i].name)) { | |
192 | list_add(&path->list, &codec->dapm_paths); | |
193 | list_add(&path->list_sink, &dest->sources); | |
194 | list_add(&path->list_source, &src->sinks); | |
195 | path->name = dest->kcontrols[i].name; | |
196 | dapm_set_path_status(dest, path, i); | |
197 | return 0; | |
198 | } | |
199 | } | |
200 | return -ENODEV; | |
201 | } | |
202 | ||
203 | /* update dapm codec register bits */ | |
204 | static int dapm_update_bits(struct snd_soc_dapm_widget *widget) | |
205 | { | |
206 | int change, power; | |
207 | unsigned short old, new; | |
208 | struct snd_soc_codec *codec = widget->codec; | |
209 | ||
210 | /* check for valid widgets */ | |
211 | if (widget->reg < 0 || widget->id == snd_soc_dapm_input || | |
212 | widget->id == snd_soc_dapm_output || | |
213 | widget->id == snd_soc_dapm_hp || | |
214 | widget->id == snd_soc_dapm_mic || | |
215 | widget->id == snd_soc_dapm_line || | |
216 | widget->id == snd_soc_dapm_spk) | |
217 | return 0; | |
218 | ||
219 | power = widget->power; | |
220 | if (widget->invert) | |
221 | power = (power ? 0:1); | |
222 | ||
223 | old = snd_soc_read(codec, widget->reg); | |
224 | new = (old & ~(0x1 << widget->shift)) | (power << widget->shift); | |
225 | ||
226 | change = old != new; | |
227 | if (change) { | |
228 | pop_dbg("pop test %s : %s in %d ms\n", widget->name, | |
15e4c72f | 229 | widget->power ? "on" : "off", pop_time); |
2b97eabc | 230 | snd_soc_write(codec, widget->reg, new); |
15e4c72f | 231 | pop_wait(); |
2b97eabc | 232 | } |
c1286b86 MB |
233 | pr_debug("reg %x old %x new %x change %d\n", widget->reg, |
234 | old, new, change); | |
2b97eabc RP |
235 | return change; |
236 | } | |
237 | ||
238 | /* ramps the volume up or down to minimise pops before or after a | |
239 | * DAPM power event */ | |
240 | static int dapm_set_pga(struct snd_soc_dapm_widget *widget, int power) | |
241 | { | |
242 | const struct snd_kcontrol_new *k = widget->kcontrols; | |
243 | ||
244 | if (widget->muted && !power) | |
245 | return 0; | |
246 | if (!widget->muted && power) | |
247 | return 0; | |
248 | ||
249 | if (widget->num_kcontrols && k) { | |
250 | int reg = k->private_value & 0xff; | |
251 | int shift = (k->private_value >> 8) & 0x0f; | |
252 | int mask = (k->private_value >> 16) & 0xff; | |
253 | int invert = (k->private_value >> 24) & 0x01; | |
254 | ||
255 | if (power) { | |
256 | int i; | |
257 | /* power up has happended, increase volume to last level */ | |
258 | if (invert) { | |
259 | for (i = mask; i > widget->saved_value; i--) | |
260 | snd_soc_update_bits(widget->codec, reg, mask, i); | |
261 | } else { | |
262 | for (i = 0; i < widget->saved_value; i++) | |
263 | snd_soc_update_bits(widget->codec, reg, mask, i); | |
264 | } | |
265 | widget->muted = 0; | |
266 | } else { | |
267 | /* power down is about to occur, decrease volume to mute */ | |
268 | int val = snd_soc_read(widget->codec, reg); | |
269 | int i = widget->saved_value = (val >> shift) & mask; | |
270 | if (invert) { | |
271 | for (; i < mask; i++) | |
272 | snd_soc_update_bits(widget->codec, reg, mask, i); | |
273 | } else { | |
274 | for (; i > 0; i--) | |
275 | snd_soc_update_bits(widget->codec, reg, mask, i); | |
276 | } | |
277 | widget->muted = 1; | |
278 | } | |
279 | } | |
280 | return 0; | |
281 | } | |
282 | ||
283 | /* create new dapm mixer control */ | |
284 | static int dapm_new_mixer(struct snd_soc_codec *codec, | |
285 | struct snd_soc_dapm_widget *w) | |
286 | { | |
287 | int i, ret = 0; | |
288 | char name[32]; | |
289 | struct snd_soc_dapm_path *path; | |
290 | ||
291 | /* add kcontrol */ | |
292 | for (i = 0; i < w->num_kcontrols; i++) { | |
293 | ||
294 | /* match name */ | |
295 | list_for_each_entry(path, &w->sources, list_sink) { | |
296 | ||
297 | /* mixer/mux paths name must match control name */ | |
298 | if (path->name != (char*)w->kcontrols[i].name) | |
299 | continue; | |
300 | ||
301 | /* add dapm control with long name */ | |
302 | snprintf(name, 32, "%s %s", w->name, w->kcontrols[i].name); | |
303 | path->long_name = kstrdup (name, GFP_KERNEL); | |
304 | if (path->long_name == NULL) | |
305 | return -ENOMEM; | |
306 | ||
307 | path->kcontrol = snd_soc_cnew(&w->kcontrols[i], w, | |
308 | path->long_name); | |
309 | ret = snd_ctl_add(codec->card, path->kcontrol); | |
310 | if (ret < 0) { | |
311 | printk(KERN_ERR "asoc: failed to add dapm kcontrol %s\n", | |
312 | path->long_name); | |
313 | kfree(path->long_name); | |
314 | path->long_name = NULL; | |
315 | return ret; | |
316 | } | |
317 | } | |
318 | } | |
319 | return ret; | |
320 | } | |
321 | ||
322 | /* create new dapm mux control */ | |
323 | static int dapm_new_mux(struct snd_soc_codec *codec, | |
324 | struct snd_soc_dapm_widget *w) | |
325 | { | |
326 | struct snd_soc_dapm_path *path = NULL; | |
327 | struct snd_kcontrol *kcontrol; | |
328 | int ret = 0; | |
329 | ||
330 | if (!w->num_kcontrols) { | |
331 | printk(KERN_ERR "asoc: mux %s has no controls\n", w->name); | |
332 | return -EINVAL; | |
333 | } | |
334 | ||
335 | kcontrol = snd_soc_cnew(&w->kcontrols[0], w, w->name); | |
336 | ret = snd_ctl_add(codec->card, kcontrol); | |
337 | if (ret < 0) | |
338 | goto err; | |
339 | ||
340 | list_for_each_entry(path, &w->sources, list_sink) | |
341 | path->kcontrol = kcontrol; | |
342 | ||
343 | return ret; | |
344 | ||
345 | err: | |
346 | printk(KERN_ERR "asoc: failed to add kcontrol %s\n", w->name); | |
347 | return ret; | |
348 | } | |
349 | ||
350 | /* create new dapm volume control */ | |
351 | static int dapm_new_pga(struct snd_soc_codec *codec, | |
352 | struct snd_soc_dapm_widget *w) | |
353 | { | |
354 | struct snd_kcontrol *kcontrol; | |
355 | int ret = 0; | |
356 | ||
357 | if (!w->num_kcontrols) | |
358 | return -EINVAL; | |
359 | ||
360 | kcontrol = snd_soc_cnew(&w->kcontrols[0], w, w->name); | |
361 | ret = snd_ctl_add(codec->card, kcontrol); | |
362 | if (ret < 0) { | |
363 | printk(KERN_ERR "asoc: failed to add kcontrol %s\n", w->name); | |
364 | return ret; | |
365 | } | |
366 | ||
367 | return ret; | |
368 | } | |
369 | ||
370 | /* reset 'walked' bit for each dapm path */ | |
371 | static inline void dapm_clear_walk(struct snd_soc_codec *codec) | |
372 | { | |
373 | struct snd_soc_dapm_path *p; | |
374 | ||
375 | list_for_each_entry(p, &codec->dapm_paths, list) | |
376 | p->walked = 0; | |
377 | } | |
378 | ||
379 | /* | |
380 | * Recursively check for a completed path to an active or physically connected | |
381 | * output widget. Returns number of complete paths. | |
382 | */ | |
383 | static int is_connected_output_ep(struct snd_soc_dapm_widget *widget) | |
384 | { | |
385 | struct snd_soc_dapm_path *path; | |
386 | int con = 0; | |
387 | ||
388 | if (widget->id == snd_soc_dapm_adc && widget->active) | |
389 | return 1; | |
390 | ||
391 | if (widget->connected) { | |
392 | /* connected pin ? */ | |
393 | if (widget->id == snd_soc_dapm_output && !widget->ext) | |
394 | return 1; | |
395 | ||
396 | /* connected jack or spk ? */ | |
397 | if (widget->id == snd_soc_dapm_hp || widget->id == snd_soc_dapm_spk || | |
398 | widget->id == snd_soc_dapm_line) | |
399 | return 1; | |
400 | } | |
401 | ||
402 | list_for_each_entry(path, &widget->sinks, list_source) { | |
403 | if (path->walked) | |
404 | continue; | |
405 | ||
406 | if (path->sink && path->connect) { | |
407 | path->walked = 1; | |
408 | con += is_connected_output_ep(path->sink); | |
409 | } | |
410 | } | |
411 | ||
412 | return con; | |
413 | } | |
414 | ||
415 | /* | |
416 | * Recursively check for a completed path to an active or physically connected | |
417 | * input widget. Returns number of complete paths. | |
418 | */ | |
419 | static int is_connected_input_ep(struct snd_soc_dapm_widget *widget) | |
420 | { | |
421 | struct snd_soc_dapm_path *path; | |
422 | int con = 0; | |
423 | ||
424 | /* active stream ? */ | |
425 | if (widget->id == snd_soc_dapm_dac && widget->active) | |
426 | return 1; | |
427 | ||
428 | if (widget->connected) { | |
429 | /* connected pin ? */ | |
430 | if (widget->id == snd_soc_dapm_input && !widget->ext) | |
431 | return 1; | |
432 | ||
433 | /* connected VMID/Bias for lower pops */ | |
434 | if (widget->id == snd_soc_dapm_vmid) | |
435 | return 1; | |
436 | ||
437 | /* connected jack ? */ | |
438 | if (widget->id == snd_soc_dapm_mic || widget->id == snd_soc_dapm_line) | |
439 | return 1; | |
440 | } | |
441 | ||
442 | list_for_each_entry(path, &widget->sources, list_sink) { | |
443 | if (path->walked) | |
444 | continue; | |
445 | ||
446 | if (path->source && path->connect) { | |
447 | path->walked = 1; | |
448 | con += is_connected_input_ep(path->source); | |
449 | } | |
450 | } | |
451 | ||
452 | return con; | |
453 | } | |
454 | ||
e2be2ccf JN |
455 | /* |
456 | * Handler for generic register modifier widget. | |
457 | */ | |
458 | int dapm_reg_event(struct snd_soc_dapm_widget *w, | |
459 | struct snd_kcontrol *kcontrol, int event) | |
460 | { | |
461 | unsigned int val; | |
462 | ||
463 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
464 | val = w->on_val; | |
465 | else | |
466 | val = w->off_val; | |
467 | ||
468 | snd_soc_update_bits(w->codec, -(w->reg + 1), | |
469 | w->mask << w->shift, val << w->shift); | |
470 | ||
471 | return 0; | |
472 | } | |
473 | ||
2b97eabc RP |
474 | /* |
475 | * Scan each dapm widget for complete audio path. | |
476 | * A complete path is a route that has valid endpoints i.e.:- | |
477 | * | |
478 | * o DAC to output pin. | |
479 | * o Input Pin to ADC. | |
480 | * o Input pin to Output pin (bypass, sidetone) | |
481 | * o DAC to ADC (loopback). | |
482 | */ | |
d9c96cf3 | 483 | static int dapm_power_widgets(struct snd_soc_codec *codec, int event) |
2b97eabc RP |
484 | { |
485 | struct snd_soc_dapm_widget *w; | |
486 | int in, out, i, c = 1, *seq = NULL, ret = 0, power_change, power; | |
487 | ||
488 | /* do we have a sequenced stream event */ | |
489 | if (event == SND_SOC_DAPM_STREAM_START) { | |
490 | c = ARRAY_SIZE(dapm_up_seq); | |
491 | seq = dapm_up_seq; | |
492 | } else if (event == SND_SOC_DAPM_STREAM_STOP) { | |
493 | c = ARRAY_SIZE(dapm_down_seq); | |
494 | seq = dapm_down_seq; | |
495 | } | |
496 | ||
497 | for(i = 0; i < c; i++) { | |
498 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
499 | ||
500 | /* is widget in stream order */ | |
501 | if (seq && seq[i] && w->id != seq[i]) | |
502 | continue; | |
503 | ||
504 | /* vmid - no action */ | |
505 | if (w->id == snd_soc_dapm_vmid) | |
506 | continue; | |
507 | ||
508 | /* active ADC */ | |
509 | if (w->id == snd_soc_dapm_adc && w->active) { | |
510 | in = is_connected_input_ep(w); | |
511 | dapm_clear_walk(w->codec); | |
512 | w->power = (in != 0) ? 1 : 0; | |
513 | dapm_update_bits(w); | |
514 | continue; | |
515 | } | |
516 | ||
517 | /* active DAC */ | |
518 | if (w->id == snd_soc_dapm_dac && w->active) { | |
519 | out = is_connected_output_ep(w); | |
520 | dapm_clear_walk(w->codec); | |
521 | w->power = (out != 0) ? 1 : 0; | |
522 | dapm_update_bits(w); | |
523 | continue; | |
524 | } | |
525 | ||
526 | /* programmable gain/attenuation */ | |
527 | if (w->id == snd_soc_dapm_pga) { | |
528 | int on; | |
529 | in = is_connected_input_ep(w); | |
530 | dapm_clear_walk(w->codec); | |
531 | out = is_connected_output_ep(w); | |
532 | dapm_clear_walk(w->codec); | |
533 | w->power = on = (out != 0 && in != 0) ? 1 : 0; | |
534 | ||
535 | if (!on) | |
536 | dapm_set_pga(w, on); /* lower volume to reduce pops */ | |
537 | dapm_update_bits(w); | |
538 | if (on) | |
539 | dapm_set_pga(w, on); /* restore volume from zero */ | |
540 | ||
541 | continue; | |
542 | } | |
543 | ||
544 | /* pre and post event widgets */ | |
545 | if (w->id == snd_soc_dapm_pre) { | |
546 | if (!w->event) | |
547 | continue; | |
548 | ||
549 | if (event == SND_SOC_DAPM_STREAM_START) { | |
9af6d956 LG |
550 | ret = w->event(w, |
551 | NULL, SND_SOC_DAPM_PRE_PMU); | |
2b97eabc RP |
552 | if (ret < 0) |
553 | return ret; | |
554 | } else if (event == SND_SOC_DAPM_STREAM_STOP) { | |
9af6d956 LG |
555 | ret = w->event(w, |
556 | NULL, SND_SOC_DAPM_PRE_PMD); | |
2b97eabc RP |
557 | if (ret < 0) |
558 | return ret; | |
559 | } | |
560 | continue; | |
561 | } | |
562 | if (w->id == snd_soc_dapm_post) { | |
563 | if (!w->event) | |
564 | continue; | |
565 | ||
566 | if (event == SND_SOC_DAPM_STREAM_START) { | |
9af6d956 LG |
567 | ret = w->event(w, |
568 | NULL, SND_SOC_DAPM_POST_PMU); | |
2b97eabc RP |
569 | if (ret < 0) |
570 | return ret; | |
571 | } else if (event == SND_SOC_DAPM_STREAM_STOP) { | |
9af6d956 LG |
572 | ret = w->event(w, |
573 | NULL, SND_SOC_DAPM_POST_PMD); | |
2b97eabc RP |
574 | if (ret < 0) |
575 | return ret; | |
576 | } | |
577 | continue; | |
578 | } | |
579 | ||
580 | /* all other widgets */ | |
581 | in = is_connected_input_ep(w); | |
582 | dapm_clear_walk(w->codec); | |
583 | out = is_connected_output_ep(w); | |
584 | dapm_clear_walk(w->codec); | |
585 | power = (out != 0 && in != 0) ? 1 : 0; | |
586 | power_change = (w->power == power) ? 0: 1; | |
587 | w->power = power; | |
588 | ||
589 | /* call any power change event handlers */ | |
590 | if (power_change) { | |
591 | if (w->event) { | |
c1286b86 MB |
592 | pr_debug("power %s event for %s flags %x\n", |
593 | w->power ? "on" : "off", w->name, w->event_flags); | |
2b97eabc RP |
594 | if (power) { |
595 | /* power up event */ | |
596 | if (w->event_flags & SND_SOC_DAPM_PRE_PMU) { | |
9af6d956 LG |
597 | ret = w->event(w, |
598 | NULL, SND_SOC_DAPM_PRE_PMU); | |
2b97eabc RP |
599 | if (ret < 0) |
600 | return ret; | |
601 | } | |
602 | dapm_update_bits(w); | |
603 | if (w->event_flags & SND_SOC_DAPM_POST_PMU){ | |
9af6d956 LG |
604 | ret = w->event(w, |
605 | NULL, SND_SOC_DAPM_POST_PMU); | |
2b97eabc RP |
606 | if (ret < 0) |
607 | return ret; | |
608 | } | |
609 | } else { | |
610 | /* power down event */ | |
611 | if (w->event_flags & SND_SOC_DAPM_PRE_PMD) { | |
9af6d956 LG |
612 | ret = w->event(w, |
613 | NULL, SND_SOC_DAPM_PRE_PMD); | |
2b97eabc RP |
614 | if (ret < 0) |
615 | return ret; | |
616 | } | |
617 | dapm_update_bits(w); | |
618 | if (w->event_flags & SND_SOC_DAPM_POST_PMD) { | |
9af6d956 LG |
619 | ret = w->event(w, |
620 | NULL, SND_SOC_DAPM_POST_PMD); | |
2b97eabc RP |
621 | if (ret < 0) |
622 | return ret; | |
623 | } | |
624 | } | |
625 | } else | |
626 | /* no event handler */ | |
627 | dapm_update_bits(w); | |
628 | } | |
629 | } | |
630 | } | |
631 | ||
632 | return ret; | |
633 | } | |
634 | ||
c1286b86 | 635 | #ifdef DEBUG |
2b97eabc RP |
636 | static void dbg_dump_dapm(struct snd_soc_codec* codec, const char *action) |
637 | { | |
638 | struct snd_soc_dapm_widget *w; | |
639 | struct snd_soc_dapm_path *p = NULL; | |
640 | int in, out; | |
641 | ||
642 | printk("DAPM %s %s\n", codec->name, action); | |
643 | ||
644 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
645 | ||
646 | /* only display widgets that effect routing */ | |
647 | switch (w->id) { | |
648 | case snd_soc_dapm_pre: | |
649 | case snd_soc_dapm_post: | |
650 | case snd_soc_dapm_vmid: | |
651 | continue; | |
652 | case snd_soc_dapm_mux: | |
653 | case snd_soc_dapm_output: | |
654 | case snd_soc_dapm_input: | |
655 | case snd_soc_dapm_switch: | |
656 | case snd_soc_dapm_hp: | |
657 | case snd_soc_dapm_mic: | |
658 | case snd_soc_dapm_spk: | |
659 | case snd_soc_dapm_line: | |
660 | case snd_soc_dapm_micbias: | |
661 | case snd_soc_dapm_dac: | |
662 | case snd_soc_dapm_adc: | |
663 | case snd_soc_dapm_pga: | |
664 | case snd_soc_dapm_mixer: | |
665 | if (w->name) { | |
666 | in = is_connected_input_ep(w); | |
667 | dapm_clear_walk(w->codec); | |
668 | out = is_connected_output_ep(w); | |
669 | dapm_clear_walk(w->codec); | |
670 | printk("%s: %s in %d out %d\n", w->name, | |
671 | w->power ? "On":"Off",in, out); | |
672 | ||
673 | list_for_each_entry(p, &w->sources, list_sink) { | |
674 | if (p->connect) | |
675 | printk(" in %s %s\n", p->name ? p->name : "static", | |
676 | p->source->name); | |
677 | } | |
678 | list_for_each_entry(p, &w->sinks, list_source) { | |
2b97eabc RP |
679 | if (p->connect) |
680 | printk(" out %s %s\n", p->name ? p->name : "static", | |
681 | p->sink->name); | |
682 | } | |
683 | } | |
684 | break; | |
685 | } | |
686 | } | |
687 | } | |
688 | #endif | |
689 | ||
690 | /* test and update the power status of a mux widget */ | |
d9c96cf3 AB |
691 | static int dapm_mux_update_power(struct snd_soc_dapm_widget *widget, |
692 | struct snd_kcontrol *kcontrol, int mask, | |
693 | int val, struct soc_enum* e) | |
2b97eabc RP |
694 | { |
695 | struct snd_soc_dapm_path *path; | |
696 | int found = 0; | |
697 | ||
698 | if (widget->id != snd_soc_dapm_mux) | |
699 | return -ENODEV; | |
700 | ||
701 | if (!snd_soc_test_bits(widget->codec, e->reg, mask, val)) | |
702 | return 0; | |
703 | ||
704 | /* find dapm widget path assoc with kcontrol */ | |
705 | list_for_each_entry(path, &widget->codec->dapm_paths, list) { | |
706 | if (path->kcontrol != kcontrol) | |
707 | continue; | |
708 | ||
709 | if (!path->name || ! e->texts[val]) | |
710 | continue; | |
711 | ||
712 | found = 1; | |
713 | /* we now need to match the string in the enum to the path */ | |
714 | if (!(strcmp(path->name, e->texts[val]))) | |
715 | path->connect = 1; /* new connection */ | |
716 | else | |
717 | path->connect = 0; /* old connection must be powered down */ | |
718 | } | |
719 | ||
3fccd8b1 | 720 | if (found) { |
2b97eabc | 721 | dapm_power_widgets(widget->codec, SND_SOC_DAPM_STREAM_NOP); |
3fccd8b1 MB |
722 | dump_dapm(widget->codec, "mux power update"); |
723 | } | |
2b97eabc RP |
724 | |
725 | return 0; | |
726 | } | |
2b97eabc | 727 | |
1b075e3f | 728 | /* test and update the power status of a mixer or switch widget */ |
d9c96cf3 AB |
729 | static int dapm_mixer_update_power(struct snd_soc_dapm_widget *widget, |
730 | struct snd_kcontrol *kcontrol, int reg, | |
731 | int val_mask, int val, int invert) | |
2b97eabc RP |
732 | { |
733 | struct snd_soc_dapm_path *path; | |
734 | int found = 0; | |
735 | ||
1b075e3f M |
736 | if (widget->id != snd_soc_dapm_mixer && |
737 | widget->id != snd_soc_dapm_switch) | |
2b97eabc RP |
738 | return -ENODEV; |
739 | ||
740 | if (!snd_soc_test_bits(widget->codec, reg, val_mask, val)) | |
741 | return 0; | |
742 | ||
743 | /* find dapm widget path assoc with kcontrol */ | |
744 | list_for_each_entry(path, &widget->codec->dapm_paths, list) { | |
745 | if (path->kcontrol != kcontrol) | |
746 | continue; | |
747 | ||
748 | /* found, now check type */ | |
749 | found = 1; | |
750 | if (val) | |
751 | /* new connection */ | |
752 | path->connect = invert ? 0:1; | |
753 | else | |
754 | /* old connection must be powered down */ | |
755 | path->connect = invert ? 1:0; | |
756 | break; | |
757 | } | |
758 | ||
3fccd8b1 | 759 | if (found) { |
2b97eabc | 760 | dapm_power_widgets(widget->codec, SND_SOC_DAPM_STREAM_NOP); |
3fccd8b1 MB |
761 | dump_dapm(widget->codec, "mixer power update"); |
762 | } | |
2b97eabc RP |
763 | |
764 | return 0; | |
765 | } | |
2b97eabc RP |
766 | |
767 | /* show dapm widget status in sys fs */ | |
768 | static ssize_t dapm_widget_show(struct device *dev, | |
769 | struct device_attribute *attr, char *buf) | |
770 | { | |
771 | struct snd_soc_device *devdata = dev_get_drvdata(dev); | |
772 | struct snd_soc_codec *codec = devdata->codec; | |
773 | struct snd_soc_dapm_widget *w; | |
774 | int count = 0; | |
775 | char *state = "not set"; | |
776 | ||
777 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
778 | ||
779 | /* only display widgets that burnm power */ | |
780 | switch (w->id) { | |
781 | case snd_soc_dapm_hp: | |
782 | case snd_soc_dapm_mic: | |
783 | case snd_soc_dapm_spk: | |
784 | case snd_soc_dapm_line: | |
785 | case snd_soc_dapm_micbias: | |
786 | case snd_soc_dapm_dac: | |
787 | case snd_soc_dapm_adc: | |
788 | case snd_soc_dapm_pga: | |
789 | case snd_soc_dapm_mixer: | |
790 | if (w->name) | |
791 | count += sprintf(buf + count, "%s: %s\n", | |
792 | w->name, w->power ? "On":"Off"); | |
793 | break; | |
794 | default: | |
795 | break; | |
796 | } | |
797 | } | |
798 | ||
0be9898a MB |
799 | switch (codec->bias_level) { |
800 | case SND_SOC_BIAS_ON: | |
801 | state = "On"; | |
2b97eabc | 802 | break; |
0be9898a MB |
803 | case SND_SOC_BIAS_PREPARE: |
804 | state = "Prepare"; | |
2b97eabc | 805 | break; |
0be9898a MB |
806 | case SND_SOC_BIAS_STANDBY: |
807 | state = "Standby"; | |
2b97eabc | 808 | break; |
0be9898a MB |
809 | case SND_SOC_BIAS_OFF: |
810 | state = "Off"; | |
2b97eabc RP |
811 | break; |
812 | } | |
813 | count += sprintf(buf + count, "PM State: %s\n", state); | |
814 | ||
815 | return count; | |
816 | } | |
817 | ||
818 | static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL); | |
819 | ||
15e4c72f MB |
820 | /* pop/click delay times */ |
821 | static ssize_t dapm_pop_time_show(struct device *dev, | |
822 | struct device_attribute *attr, char *buf) | |
823 | { | |
824 | return sprintf(buf, "%d\n", pop_time); | |
825 | } | |
826 | ||
827 | static ssize_t dapm_pop_time_store(struct device *dev, | |
828 | struct device_attribute *attr, | |
829 | const char *buf, size_t count) | |
830 | ||
831 | { | |
73ead485 MB |
832 | unsigned long val; |
833 | ||
834 | if (strict_strtoul(buf, 10, &val) >= 0) | |
835 | pop_time = val; | |
836 | else | |
15e4c72f MB |
837 | printk(KERN_ERR "Unable to parse pop_time setting\n"); |
838 | ||
839 | return count; | |
840 | } | |
841 | ||
842 | static DEVICE_ATTR(dapm_pop_time, 0744, dapm_pop_time_show, | |
843 | dapm_pop_time_store); | |
844 | ||
2b97eabc RP |
845 | int snd_soc_dapm_sys_add(struct device *dev) |
846 | { | |
847 | int ret = 0; | |
848 | ||
15e4c72f | 849 | if (dapm_status) { |
2b97eabc RP |
850 | ret = device_create_file(dev, &dev_attr_dapm_widget); |
851 | ||
15e4c72f MB |
852 | if (ret == 0) |
853 | ret = device_create_file(dev, &dev_attr_dapm_pop_time); | |
854 | } | |
855 | ||
2b97eabc RP |
856 | return ret; |
857 | } | |
858 | ||
859 | static void snd_soc_dapm_sys_remove(struct device *dev) | |
860 | { | |
15e4c72f MB |
861 | if (dapm_status) { |
862 | device_remove_file(dev, &dev_attr_dapm_pop_time); | |
2b97eabc | 863 | device_remove_file(dev, &dev_attr_dapm_widget); |
15e4c72f | 864 | } |
2b97eabc RP |
865 | } |
866 | ||
867 | /* free all dapm widgets and resources */ | |
d9c96cf3 | 868 | static void dapm_free_widgets(struct snd_soc_codec *codec) |
2b97eabc RP |
869 | { |
870 | struct snd_soc_dapm_widget *w, *next_w; | |
871 | struct snd_soc_dapm_path *p, *next_p; | |
872 | ||
873 | list_for_each_entry_safe(w, next_w, &codec->dapm_widgets, list) { | |
874 | list_del(&w->list); | |
875 | kfree(w); | |
876 | } | |
877 | ||
878 | list_for_each_entry_safe(p, next_p, &codec->dapm_paths, list) { | |
879 | list_del(&p->list); | |
880 | kfree(p->long_name); | |
881 | kfree(p); | |
882 | } | |
883 | } | |
884 | ||
a5302181 LG |
885 | static int snd_soc_dapm_set_pin(struct snd_soc_codec *codec, |
886 | char *pin, int status) | |
887 | { | |
888 | struct snd_soc_dapm_widget *w; | |
889 | ||
890 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
891 | if (!strcmp(w->name, pin)) { | |
c1286b86 | 892 | pr_debug("dapm: %s: pin %s\n", codec->name, pin); |
a5302181 LG |
893 | w->connected = status; |
894 | return 0; | |
895 | } | |
896 | } | |
897 | ||
c1286b86 | 898 | pr_err("dapm: %s: configuring unknown pin %s\n", codec->name, pin); |
a5302181 LG |
899 | return -EINVAL; |
900 | } | |
901 | ||
2b97eabc | 902 | /** |
a5302181 | 903 | * snd_soc_dapm_sync - scan and power dapm paths |
2b97eabc RP |
904 | * @codec: audio codec |
905 | * | |
906 | * Walks all dapm audio paths and powers widgets according to their | |
907 | * stream or path usage. | |
908 | * | |
909 | * Returns 0 for success. | |
910 | */ | |
a5302181 | 911 | int snd_soc_dapm_sync(struct snd_soc_codec *codec) |
2b97eabc | 912 | { |
3fccd8b1 MB |
913 | int ret = dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP); |
914 | dump_dapm(codec, "sync"); | |
915 | return ret; | |
2b97eabc | 916 | } |
a5302181 | 917 | EXPORT_SYMBOL_GPL(snd_soc_dapm_sync); |
2b97eabc | 918 | |
105f1c28 MB |
919 | static int snd_soc_dapm_add_route(struct snd_soc_codec *codec, |
920 | const char *sink, const char *control, const char *source) | |
2b97eabc RP |
921 | { |
922 | struct snd_soc_dapm_path *path; | |
923 | struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w; | |
924 | int ret = 0; | |
925 | ||
926 | /* find src and dest widgets */ | |
927 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
928 | ||
929 | if (!wsink && !(strcmp(w->name, sink))) { | |
930 | wsink = w; | |
931 | continue; | |
932 | } | |
933 | if (!wsource && !(strcmp(w->name, source))) { | |
934 | wsource = w; | |
935 | } | |
936 | } | |
937 | ||
938 | if (wsource == NULL || wsink == NULL) | |
939 | return -ENODEV; | |
940 | ||
941 | path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL); | |
942 | if (!path) | |
943 | return -ENOMEM; | |
944 | ||
945 | path->source = wsource; | |
946 | path->sink = wsink; | |
947 | INIT_LIST_HEAD(&path->list); | |
948 | INIT_LIST_HEAD(&path->list_source); | |
949 | INIT_LIST_HEAD(&path->list_sink); | |
950 | ||
951 | /* check for external widgets */ | |
952 | if (wsink->id == snd_soc_dapm_input) { | |
953 | if (wsource->id == snd_soc_dapm_micbias || | |
954 | wsource->id == snd_soc_dapm_mic || | |
1e39221e SF |
955 | wsink->id == snd_soc_dapm_line || |
956 | wsink->id == snd_soc_dapm_output) | |
2b97eabc RP |
957 | wsink->ext = 1; |
958 | } | |
959 | if (wsource->id == snd_soc_dapm_output) { | |
960 | if (wsink->id == snd_soc_dapm_spk || | |
961 | wsink->id == snd_soc_dapm_hp || | |
1e39221e SF |
962 | wsink->id == snd_soc_dapm_line || |
963 | wsink->id == snd_soc_dapm_input) | |
2b97eabc RP |
964 | wsource->ext = 1; |
965 | } | |
966 | ||
967 | /* connect static paths */ | |
968 | if (control == NULL) { | |
969 | list_add(&path->list, &codec->dapm_paths); | |
970 | list_add(&path->list_sink, &wsink->sources); | |
971 | list_add(&path->list_source, &wsource->sinks); | |
972 | path->connect = 1; | |
973 | return 0; | |
974 | } | |
975 | ||
976 | /* connect dynamic paths */ | |
977 | switch(wsink->id) { | |
978 | case snd_soc_dapm_adc: | |
979 | case snd_soc_dapm_dac: | |
980 | case snd_soc_dapm_pga: | |
981 | case snd_soc_dapm_input: | |
982 | case snd_soc_dapm_output: | |
983 | case snd_soc_dapm_micbias: | |
984 | case snd_soc_dapm_vmid: | |
985 | case snd_soc_dapm_pre: | |
986 | case snd_soc_dapm_post: | |
987 | list_add(&path->list, &codec->dapm_paths); | |
988 | list_add(&path->list_sink, &wsink->sources); | |
989 | list_add(&path->list_source, &wsource->sinks); | |
990 | path->connect = 1; | |
991 | return 0; | |
992 | case snd_soc_dapm_mux: | |
993 | ret = dapm_connect_mux(codec, wsource, wsink, path, control, | |
994 | &wsink->kcontrols[0]); | |
995 | if (ret != 0) | |
996 | goto err; | |
997 | break; | |
998 | case snd_soc_dapm_switch: | |
999 | case snd_soc_dapm_mixer: | |
1000 | ret = dapm_connect_mixer(codec, wsource, wsink, path, control); | |
1001 | if (ret != 0) | |
1002 | goto err; | |
1003 | break; | |
1004 | case snd_soc_dapm_hp: | |
1005 | case snd_soc_dapm_mic: | |
1006 | case snd_soc_dapm_line: | |
1007 | case snd_soc_dapm_spk: | |
1008 | list_add(&path->list, &codec->dapm_paths); | |
1009 | list_add(&path->list_sink, &wsink->sources); | |
1010 | list_add(&path->list_source, &wsource->sinks); | |
1011 | path->connect = 0; | |
1012 | return 0; | |
1013 | } | |
1014 | return 0; | |
1015 | ||
1016 | err: | |
1017 | printk(KERN_WARNING "asoc: no dapm match for %s --> %s --> %s\n", source, | |
1018 | control, sink); | |
1019 | kfree(path); | |
1020 | return ret; | |
1021 | } | |
105f1c28 MB |
1022 | |
1023 | /** | |
1024 | * snd_soc_dapm_connect_input - connect dapm widgets | |
1025 | * @codec: audio codec | |
1026 | * @sink: name of target widget | |
1027 | * @control: mixer control name | |
1028 | * @source: name of source name | |
1029 | * | |
1030 | * Connects 2 dapm widgets together via a named audio path. The sink is | |
1031 | * the widget receiving the audio signal, whilst the source is the sender | |
1032 | * of the audio signal. | |
1033 | * | |
1034 | * This function has been deprecated in favour of snd_soc_dapm_add_routes(). | |
1035 | * | |
1036 | * Returns 0 for success else error. | |
1037 | */ | |
1038 | int snd_soc_dapm_connect_input(struct snd_soc_codec *codec, const char *sink, | |
1039 | const char *control, const char *source) | |
1040 | { | |
1041 | return snd_soc_dapm_add_route(codec, sink, control, source); | |
1042 | } | |
2b97eabc RP |
1043 | EXPORT_SYMBOL_GPL(snd_soc_dapm_connect_input); |
1044 | ||
105f1c28 MB |
1045 | /** |
1046 | * snd_soc_dapm_add_routes - Add routes between DAPM widgets | |
1047 | * @codec: codec | |
1048 | * @route: audio routes | |
1049 | * @num: number of routes | |
1050 | * | |
1051 | * Connects 2 dapm widgets together via a named audio path. The sink is | |
1052 | * the widget receiving the audio signal, whilst the source is the sender | |
1053 | * of the audio signal. | |
1054 | * | |
1055 | * Returns 0 for success else error. On error all resources can be freed | |
1056 | * with a call to snd_soc_card_free(). | |
1057 | */ | |
1058 | int snd_soc_dapm_add_routes(struct snd_soc_codec *codec, | |
1059 | const struct snd_soc_dapm_route *route, int num) | |
1060 | { | |
1061 | int i, ret; | |
1062 | ||
1063 | for (i = 0; i < num; i++) { | |
1064 | ret = snd_soc_dapm_add_route(codec, route->sink, | |
1065 | route->control, route->source); | |
1066 | if (ret < 0) { | |
1067 | printk(KERN_ERR "Failed to add route %s->%s\n", | |
1068 | route->source, | |
1069 | route->sink); | |
1070 | return ret; | |
1071 | } | |
1072 | route++; | |
1073 | } | |
1074 | ||
1075 | return 0; | |
1076 | } | |
1077 | EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes); | |
1078 | ||
2b97eabc RP |
1079 | /** |
1080 | * snd_soc_dapm_new_widgets - add new dapm widgets | |
1081 | * @codec: audio codec | |
1082 | * | |
1083 | * Checks the codec for any new dapm widgets and creates them if found. | |
1084 | * | |
1085 | * Returns 0 for success. | |
1086 | */ | |
1087 | int snd_soc_dapm_new_widgets(struct snd_soc_codec *codec) | |
1088 | { | |
1089 | struct snd_soc_dapm_widget *w; | |
1090 | ||
2b97eabc RP |
1091 | list_for_each_entry(w, &codec->dapm_widgets, list) |
1092 | { | |
1093 | if (w->new) | |
1094 | continue; | |
1095 | ||
1096 | switch(w->id) { | |
1097 | case snd_soc_dapm_switch: | |
1098 | case snd_soc_dapm_mixer: | |
1099 | dapm_new_mixer(codec, w); | |
1100 | break; | |
1101 | case snd_soc_dapm_mux: | |
1102 | dapm_new_mux(codec, w); | |
1103 | break; | |
1104 | case snd_soc_dapm_adc: | |
1105 | case snd_soc_dapm_dac: | |
1106 | case snd_soc_dapm_pga: | |
1107 | dapm_new_pga(codec, w); | |
1108 | break; | |
1109 | case snd_soc_dapm_input: | |
1110 | case snd_soc_dapm_output: | |
1111 | case snd_soc_dapm_micbias: | |
1112 | case snd_soc_dapm_spk: | |
1113 | case snd_soc_dapm_hp: | |
1114 | case snd_soc_dapm_mic: | |
1115 | case snd_soc_dapm_line: | |
1116 | case snd_soc_dapm_vmid: | |
1117 | case snd_soc_dapm_pre: | |
1118 | case snd_soc_dapm_post: | |
1119 | break; | |
1120 | } | |
1121 | w->new = 1; | |
1122 | } | |
1123 | ||
1124 | dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP); | |
2b97eabc RP |
1125 | return 0; |
1126 | } | |
1127 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets); | |
1128 | ||
1129 | /** | |
1130 | * snd_soc_dapm_get_volsw - dapm mixer get callback | |
1131 | * @kcontrol: mixer control | |
1132 | * @uinfo: control element information | |
1133 | * | |
1134 | * Callback to get the value of a dapm mixer control. | |
1135 | * | |
1136 | * Returns 0 for success. | |
1137 | */ | |
1138 | int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol, | |
1139 | struct snd_ctl_elem_value *ucontrol) | |
1140 | { | |
1141 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1142 | int reg = kcontrol->private_value & 0xff; | |
1143 | int shift = (kcontrol->private_value >> 8) & 0x0f; | |
1144 | int rshift = (kcontrol->private_value >> 12) & 0x0f; | |
a7a4ac86 | 1145 | int max = (kcontrol->private_value >> 16) & 0xff; |
2b97eabc | 1146 | int invert = (kcontrol->private_value >> 24) & 0x01; |
a7a4ac86 | 1147 | int mask = (1 << fls(max)) - 1; |
2b97eabc RP |
1148 | |
1149 | /* return the saved value if we are powered down */ | |
1150 | if (widget->id == snd_soc_dapm_pga && !widget->power) { | |
1151 | ucontrol->value.integer.value[0] = widget->saved_value; | |
1152 | return 0; | |
1153 | } | |
1154 | ||
1155 | ucontrol->value.integer.value[0] = | |
1156 | (snd_soc_read(widget->codec, reg) >> shift) & mask; | |
1157 | if (shift != rshift) | |
1158 | ucontrol->value.integer.value[1] = | |
1159 | (snd_soc_read(widget->codec, reg) >> rshift) & mask; | |
1160 | if (invert) { | |
1161 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1162 | max - ucontrol->value.integer.value[0]; |
2b97eabc RP |
1163 | if (shift != rshift) |
1164 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 1165 | max - ucontrol->value.integer.value[1]; |
2b97eabc RP |
1166 | } |
1167 | ||
1168 | return 0; | |
1169 | } | |
1170 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw); | |
1171 | ||
1172 | /** | |
1173 | * snd_soc_dapm_put_volsw - dapm mixer set callback | |
1174 | * @kcontrol: mixer control | |
1175 | * @uinfo: control element information | |
1176 | * | |
1177 | * Callback to set the value of a dapm mixer control. | |
1178 | * | |
1179 | * Returns 0 for success. | |
1180 | */ | |
1181 | int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, | |
1182 | struct snd_ctl_elem_value *ucontrol) | |
1183 | { | |
1184 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1185 | int reg = kcontrol->private_value & 0xff; | |
1186 | int shift = (kcontrol->private_value >> 8) & 0x0f; | |
1187 | int rshift = (kcontrol->private_value >> 12) & 0x0f; | |
a7a4ac86 PZ |
1188 | int max = (kcontrol->private_value >> 16) & 0xff; |
1189 | int mask = (1 << fls(max)) - 1; | |
2b97eabc RP |
1190 | int invert = (kcontrol->private_value >> 24) & 0x01; |
1191 | unsigned short val, val2, val_mask; | |
1192 | int ret; | |
1193 | ||
1194 | val = (ucontrol->value.integer.value[0] & mask); | |
1195 | ||
1196 | if (invert) | |
a7a4ac86 | 1197 | val = max - val; |
2b97eabc RP |
1198 | val_mask = mask << shift; |
1199 | val = val << shift; | |
1200 | if (shift != rshift) { | |
1201 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1202 | if (invert) | |
a7a4ac86 | 1203 | val2 = max - val2; |
2b97eabc RP |
1204 | val_mask |= mask << rshift; |
1205 | val |= val2 << rshift; | |
1206 | } | |
1207 | ||
1208 | mutex_lock(&widget->codec->mutex); | |
1209 | widget->value = val; | |
1210 | ||
1211 | /* save volume value if the widget is powered down */ | |
1212 | if (widget->id == snd_soc_dapm_pga && !widget->power) { | |
1213 | widget->saved_value = val; | |
1214 | mutex_unlock(&widget->codec->mutex); | |
1215 | return 1; | |
1216 | } | |
1217 | ||
1218 | dapm_mixer_update_power(widget, kcontrol, reg, val_mask, val, invert); | |
1219 | if (widget->event) { | |
1220 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
9af6d956 LG |
1221 | ret = widget->event(widget, kcontrol, |
1222 | SND_SOC_DAPM_PRE_REG); | |
1223 | if (ret < 0) { | |
1224 | ret = 1; | |
2b97eabc | 1225 | goto out; |
9af6d956 | 1226 | } |
2b97eabc RP |
1227 | } |
1228 | ret = snd_soc_update_bits(widget->codec, reg, val_mask, val); | |
1229 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
9af6d956 LG |
1230 | ret = widget->event(widget, kcontrol, |
1231 | SND_SOC_DAPM_POST_REG); | |
2b97eabc RP |
1232 | } else |
1233 | ret = snd_soc_update_bits(widget->codec, reg, val_mask, val); | |
1234 | ||
1235 | out: | |
1236 | mutex_unlock(&widget->codec->mutex); | |
1237 | return ret; | |
1238 | } | |
1239 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw); | |
1240 | ||
1241 | /** | |
1242 | * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback | |
1243 | * @kcontrol: mixer control | |
1244 | * @uinfo: control element information | |
1245 | * | |
1246 | * Callback to get the value of a dapm enumerated double mixer control. | |
1247 | * | |
1248 | * Returns 0 for success. | |
1249 | */ | |
1250 | int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol, | |
1251 | struct snd_ctl_elem_value *ucontrol) | |
1252 | { | |
1253 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1254 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1255 | unsigned short val, bitmask; | |
1256 | ||
1257 | for (bitmask = 1; bitmask < e->mask; bitmask <<= 1) | |
1258 | ; | |
1259 | val = snd_soc_read(widget->codec, e->reg); | |
1260 | ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1); | |
1261 | if (e->shift_l != e->shift_r) | |
1262 | ucontrol->value.enumerated.item[1] = | |
1263 | (val >> e->shift_r) & (bitmask - 1); | |
1264 | ||
1265 | return 0; | |
1266 | } | |
1267 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double); | |
1268 | ||
1269 | /** | |
1270 | * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback | |
1271 | * @kcontrol: mixer control | |
1272 | * @uinfo: control element information | |
1273 | * | |
1274 | * Callback to set the value of a dapm enumerated double mixer control. | |
1275 | * | |
1276 | * Returns 0 for success. | |
1277 | */ | |
1278 | int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, | |
1279 | struct snd_ctl_elem_value *ucontrol) | |
1280 | { | |
1281 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1282 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1283 | unsigned short val, mux; | |
1284 | unsigned short mask, bitmask; | |
1285 | int ret = 0; | |
1286 | ||
1287 | for (bitmask = 1; bitmask < e->mask; bitmask <<= 1) | |
1288 | ; | |
1289 | if (ucontrol->value.enumerated.item[0] > e->mask - 1) | |
1290 | return -EINVAL; | |
1291 | mux = ucontrol->value.enumerated.item[0]; | |
1292 | val = mux << e->shift_l; | |
1293 | mask = (bitmask - 1) << e->shift_l; | |
1294 | if (e->shift_l != e->shift_r) { | |
1295 | if (ucontrol->value.enumerated.item[1] > e->mask - 1) | |
1296 | return -EINVAL; | |
1297 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
1298 | mask |= (bitmask - 1) << e->shift_r; | |
1299 | } | |
1300 | ||
1301 | mutex_lock(&widget->codec->mutex); | |
1302 | widget->value = val; | |
1303 | dapm_mux_update_power(widget, kcontrol, mask, mux, e); | |
1304 | if (widget->event) { | |
1305 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
9af6d956 LG |
1306 | ret = widget->event(widget, |
1307 | kcontrol, SND_SOC_DAPM_PRE_REG); | |
2b97eabc RP |
1308 | if (ret < 0) |
1309 | goto out; | |
1310 | } | |
1311 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1312 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
9af6d956 LG |
1313 | ret = widget->event(widget, |
1314 | kcontrol, SND_SOC_DAPM_POST_REG); | |
2b97eabc RP |
1315 | } else |
1316 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1317 | ||
1318 | out: | |
1319 | mutex_unlock(&widget->codec->mutex); | |
1320 | return ret; | |
1321 | } | |
1322 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double); | |
1323 | ||
1324 | /** | |
1325 | * snd_soc_dapm_new_control - create new dapm control | |
1326 | * @codec: audio codec | |
1327 | * @widget: widget template | |
1328 | * | |
1329 | * Creates a new dapm control based upon the template. | |
1330 | * | |
1331 | * Returns 0 for success else error. | |
1332 | */ | |
1333 | int snd_soc_dapm_new_control(struct snd_soc_codec *codec, | |
1334 | const struct snd_soc_dapm_widget *widget) | |
1335 | { | |
1336 | struct snd_soc_dapm_widget *w; | |
1337 | ||
1338 | if ((w = dapm_cnew_widget(widget)) == NULL) | |
1339 | return -ENOMEM; | |
1340 | ||
1341 | w->codec = codec; | |
1342 | INIT_LIST_HEAD(&w->sources); | |
1343 | INIT_LIST_HEAD(&w->sinks); | |
1344 | INIT_LIST_HEAD(&w->list); | |
1345 | list_add(&w->list, &codec->dapm_widgets); | |
1346 | ||
1347 | /* machine layer set ups unconnected pins and insertions */ | |
1348 | w->connected = 1; | |
1349 | return 0; | |
1350 | } | |
1351 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control); | |
1352 | ||
4ba1327a MB |
1353 | /** |
1354 | * snd_soc_dapm_new_controls - create new dapm controls | |
1355 | * @codec: audio codec | |
1356 | * @widget: widget array | |
1357 | * @num: number of widgets | |
1358 | * | |
1359 | * Creates new DAPM controls based upon the templates. | |
1360 | * | |
1361 | * Returns 0 for success else error. | |
1362 | */ | |
1363 | int snd_soc_dapm_new_controls(struct snd_soc_codec *codec, | |
1364 | const struct snd_soc_dapm_widget *widget, | |
1365 | int num) | |
1366 | { | |
1367 | int i, ret; | |
1368 | ||
1369 | for (i = 0; i < num; i++) { | |
1370 | ret = snd_soc_dapm_new_control(codec, widget); | |
1371 | if (ret < 0) | |
1372 | return ret; | |
1373 | widget++; | |
1374 | } | |
1375 | return 0; | |
1376 | } | |
1377 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls); | |
1378 | ||
1379 | ||
2b97eabc RP |
1380 | /** |
1381 | * snd_soc_dapm_stream_event - send a stream event to the dapm core | |
1382 | * @codec: audio codec | |
1383 | * @stream: stream name | |
1384 | * @event: stream event | |
1385 | * | |
1386 | * Sends a stream event to the dapm core. The core then makes any | |
1387 | * necessary widget power changes. | |
1388 | * | |
1389 | * Returns 0 for success else error. | |
1390 | */ | |
1391 | int snd_soc_dapm_stream_event(struct snd_soc_codec *codec, | |
1392 | char *stream, int event) | |
1393 | { | |
1394 | struct snd_soc_dapm_widget *w; | |
1395 | ||
11da21a7 SF |
1396 | if (stream == NULL) |
1397 | return 0; | |
1398 | ||
2b97eabc RP |
1399 | mutex_lock(&codec->mutex); |
1400 | list_for_each_entry(w, &codec->dapm_widgets, list) | |
1401 | { | |
1402 | if (!w->sname) | |
1403 | continue; | |
c1286b86 MB |
1404 | pr_debug("widget %s\n %s stream %s event %d\n", |
1405 | w->name, w->sname, stream, event); | |
2b97eabc RP |
1406 | if (strstr(w->sname, stream)) { |
1407 | switch(event) { | |
1408 | case SND_SOC_DAPM_STREAM_START: | |
1409 | w->active = 1; | |
1410 | break; | |
1411 | case SND_SOC_DAPM_STREAM_STOP: | |
1412 | w->active = 0; | |
1413 | break; | |
1414 | case SND_SOC_DAPM_STREAM_SUSPEND: | |
1415 | if (w->active) | |
1416 | w->suspend = 1; | |
1417 | w->active = 0; | |
1418 | break; | |
1419 | case SND_SOC_DAPM_STREAM_RESUME: | |
1420 | if (w->suspend) { | |
1421 | w->active = 1; | |
1422 | w->suspend = 0; | |
1423 | } | |
1424 | break; | |
1425 | case SND_SOC_DAPM_STREAM_PAUSE_PUSH: | |
1426 | break; | |
1427 | case SND_SOC_DAPM_STREAM_PAUSE_RELEASE: | |
1428 | break; | |
1429 | } | |
1430 | } | |
1431 | } | |
1432 | mutex_unlock(&codec->mutex); | |
1433 | ||
1434 | dapm_power_widgets(codec, event); | |
9bf8e7dd | 1435 | dump_dapm(codec, __func__); |
2b97eabc RP |
1436 | return 0; |
1437 | } | |
1438 | EXPORT_SYMBOL_GPL(snd_soc_dapm_stream_event); | |
1439 | ||
0b4d221b | 1440 | /** |
0be9898a | 1441 | * snd_soc_dapm_set_bias_level - set the bias level for the system |
0b4d221b | 1442 | * @socdev: audio device |
0be9898a | 1443 | * @level: level to configure |
0b4d221b | 1444 | * |
0be9898a | 1445 | * Configure the bias (power) levels for the SoC audio device. |
0b4d221b LG |
1446 | * |
1447 | * Returns 0 for success else error. | |
1448 | */ | |
0be9898a MB |
1449 | int snd_soc_dapm_set_bias_level(struct snd_soc_device *socdev, |
1450 | enum snd_soc_bias_level level) | |
0b4d221b LG |
1451 | { |
1452 | struct snd_soc_codec *codec = socdev->codec; | |
1453 | struct snd_soc_machine *machine = socdev->machine; | |
0be9898a | 1454 | int ret = 0; |
0b4d221b | 1455 | |
0be9898a MB |
1456 | if (machine->set_bias_level) |
1457 | ret = machine->set_bias_level(machine, level); | |
1458 | if (ret == 0 && codec->set_bias_level) | |
1459 | ret = codec->set_bias_level(codec, level); | |
1460 | ||
1461 | return ret; | |
0b4d221b | 1462 | } |
0b4d221b | 1463 | |
2b97eabc | 1464 | /** |
a5302181 LG |
1465 | * snd_soc_dapm_enable_pin - enable pin. |
1466 | * @snd_soc_codec: SoC codec | |
1467 | * @pin: pin name | |
2b97eabc | 1468 | * |
a5302181 LG |
1469 | * Enables input/output pin and it's parents or children widgets iff there is |
1470 | * a valid audio route and active audio stream. | |
1471 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
1472 | * do any widget power switching. | |
2b97eabc | 1473 | */ |
a5302181 | 1474 | int snd_soc_dapm_enable_pin(struct snd_soc_codec *codec, char *pin) |
2b97eabc | 1475 | { |
a5302181 LG |
1476 | return snd_soc_dapm_set_pin(codec, pin, 1); |
1477 | } | |
1478 | EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin); | |
2b97eabc | 1479 | |
a5302181 LG |
1480 | /** |
1481 | * snd_soc_dapm_disable_pin - disable pin. | |
1482 | * @codec: SoC codec | |
1483 | * @pin: pin name | |
1484 | * | |
1485 | * Disables input/output pin and it's parents or children widgets. | |
1486 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
1487 | * do any widget power switching. | |
1488 | */ | |
1489 | int snd_soc_dapm_disable_pin(struct snd_soc_codec *codec, char *pin) | |
1490 | { | |
1491 | return snd_soc_dapm_set_pin(codec, pin, 0); | |
2b97eabc | 1492 | } |
a5302181 | 1493 | EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin); |
2b97eabc | 1494 | |
eeec12bf | 1495 | /** |
a5302181 | 1496 | * snd_soc_dapm_get_pin_status - get audio pin status |
eeec12bf | 1497 | * @codec: audio codec |
a5302181 | 1498 | * @pin: audio signal pin endpoint (or start point) |
eeec12bf | 1499 | * |
a5302181 | 1500 | * Get audio pin status - connected or disconnected. |
eeec12bf | 1501 | * |
a5302181 | 1502 | * Returns 1 for connected otherwise 0. |
eeec12bf | 1503 | */ |
a5302181 | 1504 | int snd_soc_dapm_get_pin_status(struct snd_soc_codec *codec, char *pin) |
eeec12bf GG |
1505 | { |
1506 | struct snd_soc_dapm_widget *w; | |
1507 | ||
1508 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
a5302181 | 1509 | if (!strcmp(w->name, pin)) |
eeec12bf GG |
1510 | return w->connected; |
1511 | } | |
1512 | ||
1513 | return 0; | |
1514 | } | |
a5302181 | 1515 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status); |
eeec12bf | 1516 | |
2b97eabc RP |
1517 | /** |
1518 | * snd_soc_dapm_free - free dapm resources | |
1519 | * @socdev: SoC device | |
1520 | * | |
1521 | * Free all dapm widgets and resources. | |
1522 | */ | |
1523 | void snd_soc_dapm_free(struct snd_soc_device *socdev) | |
1524 | { | |
1525 | struct snd_soc_codec *codec = socdev->codec; | |
1526 | ||
1527 | snd_soc_dapm_sys_remove(socdev->dev); | |
1528 | dapm_free_widgets(codec); | |
1529 | } | |
1530 | EXPORT_SYMBOL_GPL(snd_soc_dapm_free); | |
1531 | ||
1532 | /* Module information */ | |
1533 | MODULE_AUTHOR("Liam Girdwood, liam.girdwood@wolfsonmicro.com, www.wolfsonmicro.com"); | |
1534 | MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC"); | |
1535 | MODULE_LICENSE("GPL"); |