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2b97eabc RP |
1 | /* |
2 | * soc-dapm.c -- ALSA SoC Dynamic Audio Power Management | |
3 | * | |
4 | * Copyright 2005 Wolfson Microelectronics PLC. | |
d331124d | 5 | * Author: Liam Girdwood <lrg@slimlogic.co.uk> |
2b97eabc RP |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2 of the License, or (at your | |
10 | * option) any later version. | |
11 | * | |
2b97eabc RP |
12 | * Features: |
13 | * o Changes power status of internal codec blocks depending on the | |
14 | * dynamic configuration of codec internal audio paths and active | |
15 | * DAC's/ADC's. | |
16 | * o Platform power domain - can support external components i.e. amps and | |
17 | * mic/meadphone insertion events. | |
18 | * o Automatic Mic Bias support | |
19 | * o Jack insertion power event initiation - e.g. hp insertion will enable | |
20 | * sinks, dacs, etc | |
3a4fa0a2 | 21 | * o Delayed powerdown of audio susbsystem to reduce pops between a quick |
2b97eabc RP |
22 | * device reopen. |
23 | * | |
24 | * Todo: | |
25 | * o DAPM power change sequencing - allow for configurable per | |
26 | * codec sequences. | |
27 | * o Support for analogue bias optimisation. | |
28 | * o Support for reduced codec oversampling rates. | |
29 | * o Support for reduced codec bias currents. | |
30 | */ | |
31 | ||
32 | #include <linux/module.h> | |
33 | #include <linux/moduleparam.h> | |
34 | #include <linux/init.h> | |
35 | #include <linux/delay.h> | |
36 | #include <linux/pm.h> | |
37 | #include <linux/bitops.h> | |
38 | #include <linux/platform_device.h> | |
39 | #include <linux/jiffies.h> | |
2b97eabc RP |
40 | #include <sound/core.h> |
41 | #include <sound/pcm.h> | |
42 | #include <sound/pcm_params.h> | |
43 | #include <sound/soc-dapm.h> | |
44 | #include <sound/initval.h> | |
45 | ||
46 | /* debug */ | |
c1286b86 | 47 | #ifdef DEBUG |
2b97eabc | 48 | #define dump_dapm(codec, action) dbg_dump_dapm(codec, action) |
2b97eabc RP |
49 | #else |
50 | #define dump_dapm(codec, action) | |
2b97eabc RP |
51 | #endif |
52 | ||
2b97eabc RP |
53 | /* dapm power sequences - make this per codec in the future */ |
54 | static int dapm_up_seq[] = { | |
55 | snd_soc_dapm_pre, snd_soc_dapm_micbias, snd_soc_dapm_mic, | |
56 | snd_soc_dapm_mux, snd_soc_dapm_dac, snd_soc_dapm_mixer, snd_soc_dapm_pga, | |
57 | snd_soc_dapm_adc, snd_soc_dapm_hp, snd_soc_dapm_spk, snd_soc_dapm_post | |
58 | }; | |
59 | static int dapm_down_seq[] = { | |
60 | snd_soc_dapm_pre, snd_soc_dapm_adc, snd_soc_dapm_hp, snd_soc_dapm_spk, | |
61 | snd_soc_dapm_pga, snd_soc_dapm_mixer, snd_soc_dapm_dac, snd_soc_dapm_mic, | |
62 | snd_soc_dapm_micbias, snd_soc_dapm_mux, snd_soc_dapm_post | |
63 | }; | |
64 | ||
65 | static int dapm_status = 1; | |
66 | module_param(dapm_status, int, 0); | |
67 | MODULE_PARM_DESC(dapm_status, "enable DPM sysfs entries"); | |
68 | ||
12ef193d | 69 | static void pop_wait(u32 pop_time) |
15e4c72f MB |
70 | { |
71 | if (pop_time) | |
72 | schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time)); | |
73 | } | |
74 | ||
12ef193d | 75 | static void pop_dbg(u32 pop_time, const char *fmt, ...) |
15e4c72f MB |
76 | { |
77 | va_list args; | |
78 | ||
79 | va_start(args, fmt); | |
80 | ||
81 | if (pop_time) { | |
82 | vprintk(fmt, args); | |
12ef193d | 83 | pop_wait(pop_time); |
15e4c72f MB |
84 | } |
85 | ||
86 | va_end(args); | |
87 | } | |
88 | ||
2b97eabc | 89 | /* create a new dapm widget */ |
88cb4290 | 90 | static inline struct snd_soc_dapm_widget *dapm_cnew_widget( |
2b97eabc RP |
91 | const struct snd_soc_dapm_widget *_widget) |
92 | { | |
88cb4290 | 93 | return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL); |
2b97eabc RP |
94 | } |
95 | ||
96 | /* set up initial codec paths */ | |
97 | static void dapm_set_path_status(struct snd_soc_dapm_widget *w, | |
98 | struct snd_soc_dapm_path *p, int i) | |
99 | { | |
100 | switch (w->id) { | |
101 | case snd_soc_dapm_switch: | |
102 | case snd_soc_dapm_mixer: { | |
103 | int val; | |
4eaa9819 JS |
104 | struct soc_mixer_control *mc = (struct soc_mixer_control *) |
105 | w->kcontrols[i].private_value; | |
815ecf8d JS |
106 | unsigned int reg = mc->reg; |
107 | unsigned int shift = mc->shift; | |
4eaa9819 | 108 | int max = mc->max; |
815ecf8d JS |
109 | unsigned int mask = (1 << fls(max)) - 1; |
110 | unsigned int invert = mc->invert; | |
2b97eabc RP |
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 | ||
f8ba0b7b | 125 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
126 | ; |
127 | val = snd_soc_read(w->codec, e->reg); | |
128 | item = (val >> e->shift_l) & (bitmask - 1); | |
129 | ||
130 | p->connect = 0; | |
f8ba0b7b | 131 | for (i = 0; i < e->max; i++) { |
2b97eabc RP |
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 | ||
f8ba0b7b | 168 | for (i = 0; i < e->max; i++) { |
2b97eabc RP |
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) { | |
12ef193d TK |
228 | pop_dbg(codec->pop_time, "pop test %s : %s in %d ms\n", |
229 | widget->name, widget->power ? "on" : "off", | |
230 | codec->pop_time); | |
2b97eabc | 231 | snd_soc_write(codec, widget->reg, new); |
12ef193d | 232 | pop_wait(codec->pop_time); |
2b97eabc | 233 | } |
c1286b86 MB |
234 | pr_debug("reg %x old %x new %x change %d\n", widget->reg, |
235 | old, new, change); | |
2b97eabc RP |
236 | return change; |
237 | } | |
238 | ||
239 | /* ramps the volume up or down to minimise pops before or after a | |
240 | * DAPM power event */ | |
241 | static int dapm_set_pga(struct snd_soc_dapm_widget *widget, int power) | |
242 | { | |
243 | const struct snd_kcontrol_new *k = widget->kcontrols; | |
244 | ||
245 | if (widget->muted && !power) | |
246 | return 0; | |
247 | if (!widget->muted && power) | |
248 | return 0; | |
249 | ||
250 | if (widget->num_kcontrols && k) { | |
4eaa9819 JS |
251 | struct soc_mixer_control *mc = |
252 | (struct soc_mixer_control *)k->private_value; | |
815ecf8d JS |
253 | unsigned int reg = mc->reg; |
254 | unsigned int shift = mc->shift; | |
4eaa9819 | 255 | int max = mc->max; |
815ecf8d JS |
256 | unsigned int mask = (1 << fls(max)) - 1; |
257 | unsigned int invert = mc->invert; | |
2b97eabc RP |
258 | |
259 | if (power) { | |
260 | int i; | |
261 | /* power up has happended, increase volume to last level */ | |
262 | if (invert) { | |
4eaa9819 | 263 | for (i = max; i > widget->saved_value; i--) |
2b97eabc RP |
264 | snd_soc_update_bits(widget->codec, reg, mask, i); |
265 | } else { | |
266 | for (i = 0; i < widget->saved_value; i++) | |
267 | snd_soc_update_bits(widget->codec, reg, mask, i); | |
268 | } | |
269 | widget->muted = 0; | |
270 | } else { | |
271 | /* power down is about to occur, decrease volume to mute */ | |
272 | int val = snd_soc_read(widget->codec, reg); | |
273 | int i = widget->saved_value = (val >> shift) & mask; | |
274 | if (invert) { | |
275 | for (; i < mask; i++) | |
276 | snd_soc_update_bits(widget->codec, reg, mask, i); | |
277 | } else { | |
278 | for (; i > 0; i--) | |
279 | snd_soc_update_bits(widget->codec, reg, mask, i); | |
280 | } | |
281 | widget->muted = 1; | |
282 | } | |
283 | } | |
284 | return 0; | |
285 | } | |
286 | ||
287 | /* create new dapm mixer control */ | |
288 | static int dapm_new_mixer(struct snd_soc_codec *codec, | |
289 | struct snd_soc_dapm_widget *w) | |
290 | { | |
291 | int i, ret = 0; | |
219b93f5 | 292 | size_t name_len; |
2b97eabc RP |
293 | struct snd_soc_dapm_path *path; |
294 | ||
295 | /* add kcontrol */ | |
296 | for (i = 0; i < w->num_kcontrols; i++) { | |
297 | ||
298 | /* match name */ | |
299 | list_for_each_entry(path, &w->sources, list_sink) { | |
300 | ||
301 | /* mixer/mux paths name must match control name */ | |
302 | if (path->name != (char*)w->kcontrols[i].name) | |
303 | continue; | |
304 | ||
305 | /* add dapm control with long name */ | |
219b93f5 MB |
306 | name_len = 2 + strlen(w->name) |
307 | + strlen(w->kcontrols[i].name); | |
308 | path->long_name = kmalloc(name_len, GFP_KERNEL); | |
2b97eabc RP |
309 | if (path->long_name == NULL) |
310 | return -ENOMEM; | |
311 | ||
219b93f5 MB |
312 | snprintf(path->long_name, name_len, "%s %s", |
313 | w->name, w->kcontrols[i].name); | |
314 | path->long_name[name_len - 1] = '\0'; | |
315 | ||
2b97eabc RP |
316 | path->kcontrol = snd_soc_cnew(&w->kcontrols[i], w, |
317 | path->long_name); | |
318 | ret = snd_ctl_add(codec->card, path->kcontrol); | |
319 | if (ret < 0) { | |
320 | printk(KERN_ERR "asoc: failed to add dapm kcontrol %s\n", | |
321 | path->long_name); | |
322 | kfree(path->long_name); | |
323 | path->long_name = NULL; | |
324 | return ret; | |
325 | } | |
326 | } | |
327 | } | |
328 | return ret; | |
329 | } | |
330 | ||
331 | /* create new dapm mux control */ | |
332 | static int dapm_new_mux(struct snd_soc_codec *codec, | |
333 | struct snd_soc_dapm_widget *w) | |
334 | { | |
335 | struct snd_soc_dapm_path *path = NULL; | |
336 | struct snd_kcontrol *kcontrol; | |
337 | int ret = 0; | |
338 | ||
339 | if (!w->num_kcontrols) { | |
340 | printk(KERN_ERR "asoc: mux %s has no controls\n", w->name); | |
341 | return -EINVAL; | |
342 | } | |
343 | ||
344 | kcontrol = snd_soc_cnew(&w->kcontrols[0], w, w->name); | |
345 | ret = snd_ctl_add(codec->card, kcontrol); | |
346 | if (ret < 0) | |
347 | goto err; | |
348 | ||
349 | list_for_each_entry(path, &w->sources, list_sink) | |
350 | path->kcontrol = kcontrol; | |
351 | ||
352 | return ret; | |
353 | ||
354 | err: | |
355 | printk(KERN_ERR "asoc: failed to add kcontrol %s\n", w->name); | |
356 | return ret; | |
357 | } | |
358 | ||
359 | /* create new dapm volume control */ | |
360 | static int dapm_new_pga(struct snd_soc_codec *codec, | |
361 | struct snd_soc_dapm_widget *w) | |
362 | { | |
363 | struct snd_kcontrol *kcontrol; | |
364 | int ret = 0; | |
365 | ||
366 | if (!w->num_kcontrols) | |
367 | return -EINVAL; | |
368 | ||
369 | kcontrol = snd_soc_cnew(&w->kcontrols[0], w, w->name); | |
370 | ret = snd_ctl_add(codec->card, kcontrol); | |
371 | if (ret < 0) { | |
372 | printk(KERN_ERR "asoc: failed to add kcontrol %s\n", w->name); | |
373 | return ret; | |
374 | } | |
375 | ||
376 | return ret; | |
377 | } | |
378 | ||
379 | /* reset 'walked' bit for each dapm path */ | |
380 | static inline void dapm_clear_walk(struct snd_soc_codec *codec) | |
381 | { | |
382 | struct snd_soc_dapm_path *p; | |
383 | ||
384 | list_for_each_entry(p, &codec->dapm_paths, list) | |
385 | p->walked = 0; | |
386 | } | |
387 | ||
388 | /* | |
389 | * Recursively check for a completed path to an active or physically connected | |
390 | * output widget. Returns number of complete paths. | |
391 | */ | |
392 | static int is_connected_output_ep(struct snd_soc_dapm_widget *widget) | |
393 | { | |
394 | struct snd_soc_dapm_path *path; | |
395 | int con = 0; | |
396 | ||
397 | if (widget->id == snd_soc_dapm_adc && widget->active) | |
398 | return 1; | |
399 | ||
400 | if (widget->connected) { | |
401 | /* connected pin ? */ | |
402 | if (widget->id == snd_soc_dapm_output && !widget->ext) | |
403 | return 1; | |
404 | ||
405 | /* connected jack or spk ? */ | |
406 | if (widget->id == snd_soc_dapm_hp || widget->id == snd_soc_dapm_spk || | |
407 | widget->id == snd_soc_dapm_line) | |
408 | return 1; | |
409 | } | |
410 | ||
411 | list_for_each_entry(path, &widget->sinks, list_source) { | |
412 | if (path->walked) | |
413 | continue; | |
414 | ||
415 | if (path->sink && path->connect) { | |
416 | path->walked = 1; | |
417 | con += is_connected_output_ep(path->sink); | |
418 | } | |
419 | } | |
420 | ||
421 | return con; | |
422 | } | |
423 | ||
424 | /* | |
425 | * Recursively check for a completed path to an active or physically connected | |
426 | * input widget. Returns number of complete paths. | |
427 | */ | |
428 | static int is_connected_input_ep(struct snd_soc_dapm_widget *widget) | |
429 | { | |
430 | struct snd_soc_dapm_path *path; | |
431 | int con = 0; | |
432 | ||
433 | /* active stream ? */ | |
434 | if (widget->id == snd_soc_dapm_dac && widget->active) | |
435 | return 1; | |
436 | ||
437 | if (widget->connected) { | |
438 | /* connected pin ? */ | |
439 | if (widget->id == snd_soc_dapm_input && !widget->ext) | |
440 | return 1; | |
441 | ||
442 | /* connected VMID/Bias for lower pops */ | |
443 | if (widget->id == snd_soc_dapm_vmid) | |
444 | return 1; | |
445 | ||
446 | /* connected jack ? */ | |
447 | if (widget->id == snd_soc_dapm_mic || widget->id == snd_soc_dapm_line) | |
448 | return 1; | |
449 | } | |
450 | ||
451 | list_for_each_entry(path, &widget->sources, list_sink) { | |
452 | if (path->walked) | |
453 | continue; | |
454 | ||
455 | if (path->source && path->connect) { | |
456 | path->walked = 1; | |
457 | con += is_connected_input_ep(path->source); | |
458 | } | |
459 | } | |
460 | ||
461 | return con; | |
462 | } | |
463 | ||
e2be2ccf JN |
464 | /* |
465 | * Handler for generic register modifier widget. | |
466 | */ | |
467 | int dapm_reg_event(struct snd_soc_dapm_widget *w, | |
468 | struct snd_kcontrol *kcontrol, int event) | |
469 | { | |
470 | unsigned int val; | |
471 | ||
472 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
473 | val = w->on_val; | |
474 | else | |
475 | val = w->off_val; | |
476 | ||
477 | snd_soc_update_bits(w->codec, -(w->reg + 1), | |
478 | w->mask << w->shift, val << w->shift); | |
479 | ||
480 | return 0; | |
481 | } | |
11589418 | 482 | EXPORT_SYMBOL_GPL(dapm_reg_event); |
e2be2ccf | 483 | |
2b97eabc RP |
484 | /* |
485 | * Scan each dapm widget for complete audio path. | |
486 | * A complete path is a route that has valid endpoints i.e.:- | |
487 | * | |
488 | * o DAC to output pin. | |
489 | * o Input Pin to ADC. | |
490 | * o Input pin to Output pin (bypass, sidetone) | |
491 | * o DAC to ADC (loopback). | |
492 | */ | |
d9c96cf3 | 493 | static int dapm_power_widgets(struct snd_soc_codec *codec, int event) |
2b97eabc RP |
494 | { |
495 | struct snd_soc_dapm_widget *w; | |
496 | int in, out, i, c = 1, *seq = NULL, ret = 0, power_change, power; | |
497 | ||
498 | /* do we have a sequenced stream event */ | |
499 | if (event == SND_SOC_DAPM_STREAM_START) { | |
500 | c = ARRAY_SIZE(dapm_up_seq); | |
501 | seq = dapm_up_seq; | |
502 | } else if (event == SND_SOC_DAPM_STREAM_STOP) { | |
503 | c = ARRAY_SIZE(dapm_down_seq); | |
504 | seq = dapm_down_seq; | |
505 | } | |
506 | ||
507 | for(i = 0; i < c; i++) { | |
508 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
509 | ||
510 | /* is widget in stream order */ | |
511 | if (seq && seq[i] && w->id != seq[i]) | |
512 | continue; | |
513 | ||
514 | /* vmid - no action */ | |
515 | if (w->id == snd_soc_dapm_vmid) | |
516 | continue; | |
517 | ||
518 | /* active ADC */ | |
519 | if (w->id == snd_soc_dapm_adc && w->active) { | |
520 | in = is_connected_input_ep(w); | |
521 | dapm_clear_walk(w->codec); | |
522 | w->power = (in != 0) ? 1 : 0; | |
523 | dapm_update_bits(w); | |
524 | continue; | |
525 | } | |
526 | ||
527 | /* active DAC */ | |
528 | if (w->id == snd_soc_dapm_dac && w->active) { | |
529 | out = is_connected_output_ep(w); | |
530 | dapm_clear_walk(w->codec); | |
531 | w->power = (out != 0) ? 1 : 0; | |
532 | dapm_update_bits(w); | |
533 | continue; | |
534 | } | |
535 | ||
2b97eabc RP |
536 | /* pre and post event widgets */ |
537 | if (w->id == snd_soc_dapm_pre) { | |
538 | if (!w->event) | |
539 | continue; | |
540 | ||
541 | if (event == SND_SOC_DAPM_STREAM_START) { | |
9af6d956 LG |
542 | ret = w->event(w, |
543 | NULL, SND_SOC_DAPM_PRE_PMU); | |
2b97eabc RP |
544 | if (ret < 0) |
545 | return ret; | |
546 | } else if (event == SND_SOC_DAPM_STREAM_STOP) { | |
9af6d956 LG |
547 | ret = w->event(w, |
548 | NULL, SND_SOC_DAPM_PRE_PMD); | |
2b97eabc RP |
549 | if (ret < 0) |
550 | return ret; | |
551 | } | |
552 | continue; | |
553 | } | |
554 | if (w->id == snd_soc_dapm_post) { | |
555 | if (!w->event) | |
556 | continue; | |
557 | ||
558 | if (event == SND_SOC_DAPM_STREAM_START) { | |
9af6d956 LG |
559 | ret = w->event(w, |
560 | NULL, SND_SOC_DAPM_POST_PMU); | |
2b97eabc RP |
561 | if (ret < 0) |
562 | return ret; | |
563 | } else if (event == SND_SOC_DAPM_STREAM_STOP) { | |
9af6d956 LG |
564 | ret = w->event(w, |
565 | NULL, SND_SOC_DAPM_POST_PMD); | |
2b97eabc RP |
566 | if (ret < 0) |
567 | return ret; | |
568 | } | |
569 | continue; | |
570 | } | |
571 | ||
572 | /* all other widgets */ | |
573 | in = is_connected_input_ep(w); | |
574 | dapm_clear_walk(w->codec); | |
575 | out = is_connected_output_ep(w); | |
576 | dapm_clear_walk(w->codec); | |
577 | power = (out != 0 && in != 0) ? 1 : 0; | |
578 | power_change = (w->power == power) ? 0: 1; | |
579 | w->power = power; | |
580 | ||
2927d6ee MB |
581 | if (!power_change) |
582 | continue; | |
583 | ||
2b97eabc | 584 | /* call any power change event handlers */ |
2927d6ee MB |
585 | if (w->event) |
586 | pr_debug("power %s event for %s flags %x\n", | |
587 | w->power ? "on" : "off", | |
588 | w->name, w->event_flags); | |
589 | ||
590 | /* power up pre event */ | |
591 | if (power && w->event && | |
592 | (w->event_flags & SND_SOC_DAPM_PRE_PMU)) { | |
593 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMU); | |
594 | if (ret < 0) | |
595 | return ret; | |
596 | } | |
597 | ||
598 | /* power down pre event */ | |
599 | if (!power && w->event && | |
600 | (w->event_flags & SND_SOC_DAPM_PRE_PMD)) { | |
601 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMD); | |
602 | if (ret < 0) | |
603 | return ret; | |
604 | } | |
605 | ||
9dd8d812 MB |
606 | /* Lower PGA volume to reduce pops */ |
607 | if (w->id == snd_soc_dapm_pga && !power) | |
608 | dapm_set_pga(w, power); | |
609 | ||
2927d6ee MB |
610 | dapm_update_bits(w); |
611 | ||
9dd8d812 MB |
612 | /* Raise PGA volume to reduce pops */ |
613 | if (w->id == snd_soc_dapm_pga && power) | |
614 | dapm_set_pga(w, power); | |
615 | ||
2927d6ee MB |
616 | /* power up post event */ |
617 | if (power && w->event && | |
618 | (w->event_flags & SND_SOC_DAPM_POST_PMU)) { | |
619 | ret = w->event(w, | |
620 | NULL, SND_SOC_DAPM_POST_PMU); | |
621 | if (ret < 0) | |
622 | return ret; | |
623 | } | |
624 | ||
625 | /* power down post event */ | |
626 | if (!power && w->event && | |
627 | (w->event_flags & SND_SOC_DAPM_POST_PMD)) { | |
628 | ret = w->event(w, NULL, SND_SOC_DAPM_POST_PMD); | |
629 | if (ret < 0) | |
630 | return ret; | |
2b97eabc RP |
631 | } |
632 | } | |
633 | } | |
634 | ||
635 | return ret; | |
636 | } | |
637 | ||
c1286b86 | 638 | #ifdef DEBUG |
2b97eabc RP |
639 | static void dbg_dump_dapm(struct snd_soc_codec* codec, const char *action) |
640 | { | |
641 | struct snd_soc_dapm_widget *w; | |
642 | struct snd_soc_dapm_path *p = NULL; | |
643 | int in, out; | |
644 | ||
645 | printk("DAPM %s %s\n", codec->name, action); | |
646 | ||
647 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
648 | ||
649 | /* only display widgets that effect routing */ | |
650 | switch (w->id) { | |
651 | case snd_soc_dapm_pre: | |
652 | case snd_soc_dapm_post: | |
653 | case snd_soc_dapm_vmid: | |
654 | continue; | |
655 | case snd_soc_dapm_mux: | |
656 | case snd_soc_dapm_output: | |
657 | case snd_soc_dapm_input: | |
658 | case snd_soc_dapm_switch: | |
659 | case snd_soc_dapm_hp: | |
660 | case snd_soc_dapm_mic: | |
661 | case snd_soc_dapm_spk: | |
662 | case snd_soc_dapm_line: | |
663 | case snd_soc_dapm_micbias: | |
664 | case snd_soc_dapm_dac: | |
665 | case snd_soc_dapm_adc: | |
666 | case snd_soc_dapm_pga: | |
667 | case snd_soc_dapm_mixer: | |
668 | if (w->name) { | |
669 | in = is_connected_input_ep(w); | |
670 | dapm_clear_walk(w->codec); | |
671 | out = is_connected_output_ep(w); | |
672 | dapm_clear_walk(w->codec); | |
673 | printk("%s: %s in %d out %d\n", w->name, | |
674 | w->power ? "On":"Off",in, out); | |
675 | ||
676 | list_for_each_entry(p, &w->sources, list_sink) { | |
677 | if (p->connect) | |
678 | printk(" in %s %s\n", p->name ? p->name : "static", | |
679 | p->source->name); | |
680 | } | |
681 | list_for_each_entry(p, &w->sinks, list_source) { | |
2b97eabc RP |
682 | if (p->connect) |
683 | printk(" out %s %s\n", p->name ? p->name : "static", | |
684 | p->sink->name); | |
685 | } | |
686 | } | |
687 | break; | |
688 | } | |
689 | } | |
690 | } | |
691 | #endif | |
692 | ||
693 | /* test and update the power status of a mux widget */ | |
d9c96cf3 AB |
694 | static int dapm_mux_update_power(struct snd_soc_dapm_widget *widget, |
695 | struct snd_kcontrol *kcontrol, int mask, | |
cb01e2b9 | 696 | int mux, int val, struct soc_enum *e) |
2b97eabc RP |
697 | { |
698 | struct snd_soc_dapm_path *path; | |
699 | int found = 0; | |
700 | ||
701 | if (widget->id != snd_soc_dapm_mux) | |
702 | return -ENODEV; | |
703 | ||
704 | if (!snd_soc_test_bits(widget->codec, e->reg, mask, val)) | |
705 | return 0; | |
706 | ||
707 | /* find dapm widget path assoc with kcontrol */ | |
708 | list_for_each_entry(path, &widget->codec->dapm_paths, list) { | |
709 | if (path->kcontrol != kcontrol) | |
710 | continue; | |
711 | ||
cb01e2b9 | 712 | if (!path->name || !e->texts[mux]) |
2b97eabc RP |
713 | continue; |
714 | ||
715 | found = 1; | |
716 | /* we now need to match the string in the enum to the path */ | |
cb01e2b9 | 717 | if (!(strcmp(path->name, e->texts[mux]))) |
2b97eabc RP |
718 | path->connect = 1; /* new connection */ |
719 | else | |
720 | path->connect = 0; /* old connection must be powered down */ | |
721 | } | |
722 | ||
3fccd8b1 | 723 | if (found) { |
2b97eabc | 724 | dapm_power_widgets(widget->codec, SND_SOC_DAPM_STREAM_NOP); |
3fccd8b1 MB |
725 | dump_dapm(widget->codec, "mux power update"); |
726 | } | |
2b97eabc RP |
727 | |
728 | return 0; | |
729 | } | |
2b97eabc | 730 | |
1b075e3f | 731 | /* test and update the power status of a mixer or switch widget */ |
d9c96cf3 AB |
732 | static int dapm_mixer_update_power(struct snd_soc_dapm_widget *widget, |
733 | struct snd_kcontrol *kcontrol, int reg, | |
734 | int val_mask, int val, int invert) | |
2b97eabc RP |
735 | { |
736 | struct snd_soc_dapm_path *path; | |
737 | int found = 0; | |
738 | ||
1b075e3f M |
739 | if (widget->id != snd_soc_dapm_mixer && |
740 | widget->id != snd_soc_dapm_switch) | |
2b97eabc RP |
741 | return -ENODEV; |
742 | ||
743 | if (!snd_soc_test_bits(widget->codec, reg, val_mask, val)) | |
744 | return 0; | |
745 | ||
746 | /* find dapm widget path assoc with kcontrol */ | |
747 | list_for_each_entry(path, &widget->codec->dapm_paths, list) { | |
748 | if (path->kcontrol != kcontrol) | |
749 | continue; | |
750 | ||
751 | /* found, now check type */ | |
752 | found = 1; | |
753 | if (val) | |
754 | /* new connection */ | |
755 | path->connect = invert ? 0:1; | |
756 | else | |
757 | /* old connection must be powered down */ | |
758 | path->connect = invert ? 1:0; | |
759 | break; | |
760 | } | |
761 | ||
3fccd8b1 | 762 | if (found) { |
2b97eabc | 763 | dapm_power_widgets(widget->codec, SND_SOC_DAPM_STREAM_NOP); |
3fccd8b1 MB |
764 | dump_dapm(widget->codec, "mixer power update"); |
765 | } | |
2b97eabc RP |
766 | |
767 | return 0; | |
768 | } | |
2b97eabc RP |
769 | |
770 | /* show dapm widget status in sys fs */ | |
771 | static ssize_t dapm_widget_show(struct device *dev, | |
772 | struct device_attribute *attr, char *buf) | |
773 | { | |
774 | struct snd_soc_device *devdata = dev_get_drvdata(dev); | |
775 | struct snd_soc_codec *codec = devdata->codec; | |
776 | struct snd_soc_dapm_widget *w; | |
777 | int count = 0; | |
778 | char *state = "not set"; | |
779 | ||
780 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
781 | ||
782 | /* only display widgets that burnm power */ | |
783 | switch (w->id) { | |
784 | case snd_soc_dapm_hp: | |
785 | case snd_soc_dapm_mic: | |
786 | case snd_soc_dapm_spk: | |
787 | case snd_soc_dapm_line: | |
788 | case snd_soc_dapm_micbias: | |
789 | case snd_soc_dapm_dac: | |
790 | case snd_soc_dapm_adc: | |
791 | case snd_soc_dapm_pga: | |
792 | case snd_soc_dapm_mixer: | |
793 | if (w->name) | |
794 | count += sprintf(buf + count, "%s: %s\n", | |
795 | w->name, w->power ? "On":"Off"); | |
796 | break; | |
797 | default: | |
798 | break; | |
799 | } | |
800 | } | |
801 | ||
0be9898a MB |
802 | switch (codec->bias_level) { |
803 | case SND_SOC_BIAS_ON: | |
804 | state = "On"; | |
2b97eabc | 805 | break; |
0be9898a MB |
806 | case SND_SOC_BIAS_PREPARE: |
807 | state = "Prepare"; | |
2b97eabc | 808 | break; |
0be9898a MB |
809 | case SND_SOC_BIAS_STANDBY: |
810 | state = "Standby"; | |
2b97eabc | 811 | break; |
0be9898a MB |
812 | case SND_SOC_BIAS_OFF: |
813 | state = "Off"; | |
2b97eabc RP |
814 | break; |
815 | } | |
816 | count += sprintf(buf + count, "PM State: %s\n", state); | |
817 | ||
818 | return count; | |
819 | } | |
820 | ||
821 | static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL); | |
822 | ||
823 | int snd_soc_dapm_sys_add(struct device *dev) | |
824 | { | |
f0062a92 MB |
825 | if (!dapm_status) |
826 | return 0; | |
12ef193d | 827 | return device_create_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
828 | } |
829 | ||
830 | static void snd_soc_dapm_sys_remove(struct device *dev) | |
831 | { | |
15e4c72f | 832 | if (dapm_status) { |
2b97eabc | 833 | device_remove_file(dev, &dev_attr_dapm_widget); |
15e4c72f | 834 | } |
2b97eabc RP |
835 | } |
836 | ||
837 | /* free all dapm widgets and resources */ | |
d9c96cf3 | 838 | static void dapm_free_widgets(struct snd_soc_codec *codec) |
2b97eabc RP |
839 | { |
840 | struct snd_soc_dapm_widget *w, *next_w; | |
841 | struct snd_soc_dapm_path *p, *next_p; | |
842 | ||
843 | list_for_each_entry_safe(w, next_w, &codec->dapm_widgets, list) { | |
844 | list_del(&w->list); | |
845 | kfree(w); | |
846 | } | |
847 | ||
848 | list_for_each_entry_safe(p, next_p, &codec->dapm_paths, list) { | |
849 | list_del(&p->list); | |
850 | kfree(p->long_name); | |
851 | kfree(p); | |
852 | } | |
853 | } | |
854 | ||
a5302181 LG |
855 | static int snd_soc_dapm_set_pin(struct snd_soc_codec *codec, |
856 | char *pin, int status) | |
857 | { | |
858 | struct snd_soc_dapm_widget *w; | |
859 | ||
860 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
861 | if (!strcmp(w->name, pin)) { | |
c1286b86 | 862 | pr_debug("dapm: %s: pin %s\n", codec->name, pin); |
a5302181 LG |
863 | w->connected = status; |
864 | return 0; | |
865 | } | |
866 | } | |
867 | ||
c1286b86 | 868 | pr_err("dapm: %s: configuring unknown pin %s\n", codec->name, pin); |
a5302181 LG |
869 | return -EINVAL; |
870 | } | |
871 | ||
2b97eabc | 872 | /** |
a5302181 | 873 | * snd_soc_dapm_sync - scan and power dapm paths |
2b97eabc RP |
874 | * @codec: audio codec |
875 | * | |
876 | * Walks all dapm audio paths and powers widgets according to their | |
877 | * stream or path usage. | |
878 | * | |
879 | * Returns 0 for success. | |
880 | */ | |
a5302181 | 881 | int snd_soc_dapm_sync(struct snd_soc_codec *codec) |
2b97eabc | 882 | { |
3fccd8b1 MB |
883 | int ret = dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP); |
884 | dump_dapm(codec, "sync"); | |
885 | return ret; | |
2b97eabc | 886 | } |
a5302181 | 887 | EXPORT_SYMBOL_GPL(snd_soc_dapm_sync); |
2b97eabc | 888 | |
105f1c28 MB |
889 | static int snd_soc_dapm_add_route(struct snd_soc_codec *codec, |
890 | const char *sink, const char *control, const char *source) | |
2b97eabc RP |
891 | { |
892 | struct snd_soc_dapm_path *path; | |
893 | struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w; | |
894 | int ret = 0; | |
895 | ||
896 | /* find src and dest widgets */ | |
897 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
898 | ||
899 | if (!wsink && !(strcmp(w->name, sink))) { | |
900 | wsink = w; | |
901 | continue; | |
902 | } | |
903 | if (!wsource && !(strcmp(w->name, source))) { | |
904 | wsource = w; | |
905 | } | |
906 | } | |
907 | ||
908 | if (wsource == NULL || wsink == NULL) | |
909 | return -ENODEV; | |
910 | ||
911 | path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL); | |
912 | if (!path) | |
913 | return -ENOMEM; | |
914 | ||
915 | path->source = wsource; | |
916 | path->sink = wsink; | |
917 | INIT_LIST_HEAD(&path->list); | |
918 | INIT_LIST_HEAD(&path->list_source); | |
919 | INIT_LIST_HEAD(&path->list_sink); | |
920 | ||
921 | /* check for external widgets */ | |
922 | if (wsink->id == snd_soc_dapm_input) { | |
923 | if (wsource->id == snd_soc_dapm_micbias || | |
924 | wsource->id == snd_soc_dapm_mic || | |
1e39221e SF |
925 | wsink->id == snd_soc_dapm_line || |
926 | wsink->id == snd_soc_dapm_output) | |
2b97eabc RP |
927 | wsink->ext = 1; |
928 | } | |
929 | if (wsource->id == snd_soc_dapm_output) { | |
930 | if (wsink->id == snd_soc_dapm_spk || | |
931 | wsink->id == snd_soc_dapm_hp || | |
1e39221e SF |
932 | wsink->id == snd_soc_dapm_line || |
933 | wsink->id == snd_soc_dapm_input) | |
2b97eabc RP |
934 | wsource->ext = 1; |
935 | } | |
936 | ||
937 | /* connect static paths */ | |
938 | if (control == NULL) { | |
939 | list_add(&path->list, &codec->dapm_paths); | |
940 | list_add(&path->list_sink, &wsink->sources); | |
941 | list_add(&path->list_source, &wsource->sinks); | |
942 | path->connect = 1; | |
943 | return 0; | |
944 | } | |
945 | ||
946 | /* connect dynamic paths */ | |
947 | switch(wsink->id) { | |
948 | case snd_soc_dapm_adc: | |
949 | case snd_soc_dapm_dac: | |
950 | case snd_soc_dapm_pga: | |
951 | case snd_soc_dapm_input: | |
952 | case snd_soc_dapm_output: | |
953 | case snd_soc_dapm_micbias: | |
954 | case snd_soc_dapm_vmid: | |
955 | case snd_soc_dapm_pre: | |
956 | case snd_soc_dapm_post: | |
957 | list_add(&path->list, &codec->dapm_paths); | |
958 | list_add(&path->list_sink, &wsink->sources); | |
959 | list_add(&path->list_source, &wsource->sinks); | |
960 | path->connect = 1; | |
961 | return 0; | |
962 | case snd_soc_dapm_mux: | |
963 | ret = dapm_connect_mux(codec, wsource, wsink, path, control, | |
964 | &wsink->kcontrols[0]); | |
965 | if (ret != 0) | |
966 | goto err; | |
967 | break; | |
968 | case snd_soc_dapm_switch: | |
969 | case snd_soc_dapm_mixer: | |
970 | ret = dapm_connect_mixer(codec, wsource, wsink, path, control); | |
971 | if (ret != 0) | |
972 | goto err; | |
973 | break; | |
974 | case snd_soc_dapm_hp: | |
975 | case snd_soc_dapm_mic: | |
976 | case snd_soc_dapm_line: | |
977 | case snd_soc_dapm_spk: | |
978 | list_add(&path->list, &codec->dapm_paths); | |
979 | list_add(&path->list_sink, &wsink->sources); | |
980 | list_add(&path->list_source, &wsource->sinks); | |
981 | path->connect = 0; | |
982 | return 0; | |
983 | } | |
984 | return 0; | |
985 | ||
986 | err: | |
987 | printk(KERN_WARNING "asoc: no dapm match for %s --> %s --> %s\n", source, | |
988 | control, sink); | |
989 | kfree(path); | |
990 | return ret; | |
991 | } | |
105f1c28 | 992 | |
105f1c28 MB |
993 | /** |
994 | * snd_soc_dapm_add_routes - Add routes between DAPM widgets | |
995 | * @codec: codec | |
996 | * @route: audio routes | |
997 | * @num: number of routes | |
998 | * | |
999 | * Connects 2 dapm widgets together via a named audio path. The sink is | |
1000 | * the widget receiving the audio signal, whilst the source is the sender | |
1001 | * of the audio signal. | |
1002 | * | |
1003 | * Returns 0 for success else error. On error all resources can be freed | |
1004 | * with a call to snd_soc_card_free(). | |
1005 | */ | |
1006 | int snd_soc_dapm_add_routes(struct snd_soc_codec *codec, | |
1007 | const struct snd_soc_dapm_route *route, int num) | |
1008 | { | |
1009 | int i, ret; | |
1010 | ||
1011 | for (i = 0; i < num; i++) { | |
1012 | ret = snd_soc_dapm_add_route(codec, route->sink, | |
1013 | route->control, route->source); | |
1014 | if (ret < 0) { | |
1015 | printk(KERN_ERR "Failed to add route %s->%s\n", | |
1016 | route->source, | |
1017 | route->sink); | |
1018 | return ret; | |
1019 | } | |
1020 | route++; | |
1021 | } | |
1022 | ||
1023 | return 0; | |
1024 | } | |
1025 | EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes); | |
1026 | ||
2b97eabc RP |
1027 | /** |
1028 | * snd_soc_dapm_new_widgets - add new dapm widgets | |
1029 | * @codec: audio codec | |
1030 | * | |
1031 | * Checks the codec for any new dapm widgets and creates them if found. | |
1032 | * | |
1033 | * Returns 0 for success. | |
1034 | */ | |
1035 | int snd_soc_dapm_new_widgets(struct snd_soc_codec *codec) | |
1036 | { | |
1037 | struct snd_soc_dapm_widget *w; | |
1038 | ||
2b97eabc RP |
1039 | list_for_each_entry(w, &codec->dapm_widgets, list) |
1040 | { | |
1041 | if (w->new) | |
1042 | continue; | |
1043 | ||
1044 | switch(w->id) { | |
1045 | case snd_soc_dapm_switch: | |
1046 | case snd_soc_dapm_mixer: | |
1047 | dapm_new_mixer(codec, w); | |
1048 | break; | |
1049 | case snd_soc_dapm_mux: | |
1050 | dapm_new_mux(codec, w); | |
1051 | break; | |
1052 | case snd_soc_dapm_adc: | |
1053 | case snd_soc_dapm_dac: | |
1054 | case snd_soc_dapm_pga: | |
1055 | dapm_new_pga(codec, w); | |
1056 | break; | |
1057 | case snd_soc_dapm_input: | |
1058 | case snd_soc_dapm_output: | |
1059 | case snd_soc_dapm_micbias: | |
1060 | case snd_soc_dapm_spk: | |
1061 | case snd_soc_dapm_hp: | |
1062 | case snd_soc_dapm_mic: | |
1063 | case snd_soc_dapm_line: | |
1064 | case snd_soc_dapm_vmid: | |
1065 | case snd_soc_dapm_pre: | |
1066 | case snd_soc_dapm_post: | |
1067 | break; | |
1068 | } | |
1069 | w->new = 1; | |
1070 | } | |
1071 | ||
1072 | dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP); | |
2b97eabc RP |
1073 | return 0; |
1074 | } | |
1075 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets); | |
1076 | ||
1077 | /** | |
1078 | * snd_soc_dapm_get_volsw - dapm mixer get callback | |
1079 | * @kcontrol: mixer control | |
1080 | * @uinfo: control element information | |
1081 | * | |
1082 | * Callback to get the value of a dapm mixer control. | |
1083 | * | |
1084 | * Returns 0 for success. | |
1085 | */ | |
1086 | int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol, | |
1087 | struct snd_ctl_elem_value *ucontrol) | |
1088 | { | |
1089 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
4eaa9819 JS |
1090 | struct soc_mixer_control *mc = |
1091 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
1092 | unsigned int reg = mc->reg; |
1093 | unsigned int shift = mc->shift; | |
1094 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1095 | int max = mc->max; |
815ecf8d JS |
1096 | unsigned int invert = mc->invert; |
1097 | unsigned int mask = (1 << fls(max)) - 1; | |
2b97eabc RP |
1098 | |
1099 | /* return the saved value if we are powered down */ | |
1100 | if (widget->id == snd_soc_dapm_pga && !widget->power) { | |
1101 | ucontrol->value.integer.value[0] = widget->saved_value; | |
1102 | return 0; | |
1103 | } | |
1104 | ||
1105 | ucontrol->value.integer.value[0] = | |
1106 | (snd_soc_read(widget->codec, reg) >> shift) & mask; | |
1107 | if (shift != rshift) | |
1108 | ucontrol->value.integer.value[1] = | |
1109 | (snd_soc_read(widget->codec, reg) >> rshift) & mask; | |
1110 | if (invert) { | |
1111 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1112 | max - ucontrol->value.integer.value[0]; |
2b97eabc RP |
1113 | if (shift != rshift) |
1114 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 1115 | max - ucontrol->value.integer.value[1]; |
2b97eabc RP |
1116 | } |
1117 | ||
1118 | return 0; | |
1119 | } | |
1120 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw); | |
1121 | ||
1122 | /** | |
1123 | * snd_soc_dapm_put_volsw - dapm mixer set callback | |
1124 | * @kcontrol: mixer control | |
1125 | * @uinfo: control element information | |
1126 | * | |
1127 | * Callback to set the value of a dapm mixer control. | |
1128 | * | |
1129 | * Returns 0 for success. | |
1130 | */ | |
1131 | int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, | |
1132 | struct snd_ctl_elem_value *ucontrol) | |
1133 | { | |
1134 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
4eaa9819 JS |
1135 | struct soc_mixer_control *mc = |
1136 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
1137 | unsigned int reg = mc->reg; |
1138 | unsigned int shift = mc->shift; | |
1139 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1140 | int max = mc->max; |
815ecf8d JS |
1141 | unsigned int mask = (1 << fls(max)) - 1; |
1142 | unsigned int invert = mc->invert; | |
2b97eabc RP |
1143 | unsigned short val, val2, val_mask; |
1144 | int ret; | |
1145 | ||
1146 | val = (ucontrol->value.integer.value[0] & mask); | |
1147 | ||
1148 | if (invert) | |
a7a4ac86 | 1149 | val = max - val; |
2b97eabc RP |
1150 | val_mask = mask << shift; |
1151 | val = val << shift; | |
1152 | if (shift != rshift) { | |
1153 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1154 | if (invert) | |
a7a4ac86 | 1155 | val2 = max - val2; |
2b97eabc RP |
1156 | val_mask |= mask << rshift; |
1157 | val |= val2 << rshift; | |
1158 | } | |
1159 | ||
1160 | mutex_lock(&widget->codec->mutex); | |
1161 | widget->value = val; | |
1162 | ||
1163 | /* save volume value if the widget is powered down */ | |
1164 | if (widget->id == snd_soc_dapm_pga && !widget->power) { | |
1165 | widget->saved_value = val; | |
1166 | mutex_unlock(&widget->codec->mutex); | |
1167 | return 1; | |
1168 | } | |
1169 | ||
1170 | dapm_mixer_update_power(widget, kcontrol, reg, val_mask, val, invert); | |
1171 | if (widget->event) { | |
1172 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
9af6d956 LG |
1173 | ret = widget->event(widget, kcontrol, |
1174 | SND_SOC_DAPM_PRE_REG); | |
1175 | if (ret < 0) { | |
1176 | ret = 1; | |
2b97eabc | 1177 | goto out; |
9af6d956 | 1178 | } |
2b97eabc RP |
1179 | } |
1180 | ret = snd_soc_update_bits(widget->codec, reg, val_mask, val); | |
1181 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
9af6d956 LG |
1182 | ret = widget->event(widget, kcontrol, |
1183 | SND_SOC_DAPM_POST_REG); | |
2b97eabc RP |
1184 | } else |
1185 | ret = snd_soc_update_bits(widget->codec, reg, val_mask, val); | |
1186 | ||
1187 | out: | |
1188 | mutex_unlock(&widget->codec->mutex); | |
1189 | return ret; | |
1190 | } | |
1191 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw); | |
1192 | ||
1193 | /** | |
1194 | * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback | |
1195 | * @kcontrol: mixer control | |
1196 | * @uinfo: control element information | |
1197 | * | |
1198 | * Callback to get the value of a dapm enumerated double mixer control. | |
1199 | * | |
1200 | * Returns 0 for success. | |
1201 | */ | |
1202 | int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol, | |
1203 | struct snd_ctl_elem_value *ucontrol) | |
1204 | { | |
1205 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1206 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1207 | unsigned short val, bitmask; | |
1208 | ||
f8ba0b7b | 1209 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
1210 | ; |
1211 | val = snd_soc_read(widget->codec, e->reg); | |
1212 | ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1); | |
1213 | if (e->shift_l != e->shift_r) | |
1214 | ucontrol->value.enumerated.item[1] = | |
1215 | (val >> e->shift_r) & (bitmask - 1); | |
1216 | ||
1217 | return 0; | |
1218 | } | |
1219 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double); | |
1220 | ||
1221 | /** | |
1222 | * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback | |
1223 | * @kcontrol: mixer control | |
1224 | * @uinfo: control element information | |
1225 | * | |
1226 | * Callback to set the value of a dapm enumerated double mixer control. | |
1227 | * | |
1228 | * Returns 0 for success. | |
1229 | */ | |
1230 | int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, | |
1231 | struct snd_ctl_elem_value *ucontrol) | |
1232 | { | |
1233 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1234 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1235 | unsigned short val, mux; | |
1236 | unsigned short mask, bitmask; | |
1237 | int ret = 0; | |
1238 | ||
f8ba0b7b | 1239 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc | 1240 | ; |
f8ba0b7b | 1241 | if (ucontrol->value.enumerated.item[0] > e->max - 1) |
2b97eabc RP |
1242 | return -EINVAL; |
1243 | mux = ucontrol->value.enumerated.item[0]; | |
1244 | val = mux << e->shift_l; | |
1245 | mask = (bitmask - 1) << e->shift_l; | |
1246 | if (e->shift_l != e->shift_r) { | |
f8ba0b7b | 1247 | if (ucontrol->value.enumerated.item[1] > e->max - 1) |
2b97eabc RP |
1248 | return -EINVAL; |
1249 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
1250 | mask |= (bitmask - 1) << e->shift_r; | |
1251 | } | |
1252 | ||
1253 | mutex_lock(&widget->codec->mutex); | |
1254 | widget->value = val; | |
cb01e2b9 | 1255 | dapm_mux_update_power(widget, kcontrol, mask, mux, val, e); |
2b97eabc RP |
1256 | if (widget->event) { |
1257 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
9af6d956 LG |
1258 | ret = widget->event(widget, |
1259 | kcontrol, SND_SOC_DAPM_PRE_REG); | |
2b97eabc RP |
1260 | if (ret < 0) |
1261 | goto out; | |
1262 | } | |
1263 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1264 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
9af6d956 LG |
1265 | ret = widget->event(widget, |
1266 | kcontrol, SND_SOC_DAPM_POST_REG); | |
2b97eabc RP |
1267 | } else |
1268 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1269 | ||
1270 | out: | |
1271 | mutex_unlock(&widget->codec->mutex); | |
1272 | return ret; | |
1273 | } | |
1274 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double); | |
1275 | ||
1276 | /** | |
1277 | * snd_soc_dapm_new_control - create new dapm control | |
1278 | * @codec: audio codec | |
1279 | * @widget: widget template | |
1280 | * | |
1281 | * Creates a new dapm control based upon the template. | |
1282 | * | |
1283 | * Returns 0 for success else error. | |
1284 | */ | |
1285 | int snd_soc_dapm_new_control(struct snd_soc_codec *codec, | |
1286 | const struct snd_soc_dapm_widget *widget) | |
1287 | { | |
1288 | struct snd_soc_dapm_widget *w; | |
1289 | ||
1290 | if ((w = dapm_cnew_widget(widget)) == NULL) | |
1291 | return -ENOMEM; | |
1292 | ||
1293 | w->codec = codec; | |
1294 | INIT_LIST_HEAD(&w->sources); | |
1295 | INIT_LIST_HEAD(&w->sinks); | |
1296 | INIT_LIST_HEAD(&w->list); | |
1297 | list_add(&w->list, &codec->dapm_widgets); | |
1298 | ||
1299 | /* machine layer set ups unconnected pins and insertions */ | |
1300 | w->connected = 1; | |
1301 | return 0; | |
1302 | } | |
1303 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control); | |
1304 | ||
4ba1327a MB |
1305 | /** |
1306 | * snd_soc_dapm_new_controls - create new dapm controls | |
1307 | * @codec: audio codec | |
1308 | * @widget: widget array | |
1309 | * @num: number of widgets | |
1310 | * | |
1311 | * Creates new DAPM controls based upon the templates. | |
1312 | * | |
1313 | * Returns 0 for success else error. | |
1314 | */ | |
1315 | int snd_soc_dapm_new_controls(struct snd_soc_codec *codec, | |
1316 | const struct snd_soc_dapm_widget *widget, | |
1317 | int num) | |
1318 | { | |
1319 | int i, ret; | |
1320 | ||
1321 | for (i = 0; i < num; i++) { | |
1322 | ret = snd_soc_dapm_new_control(codec, widget); | |
1323 | if (ret < 0) | |
1324 | return ret; | |
1325 | widget++; | |
1326 | } | |
1327 | return 0; | |
1328 | } | |
1329 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls); | |
1330 | ||
1331 | ||
2b97eabc RP |
1332 | /** |
1333 | * snd_soc_dapm_stream_event - send a stream event to the dapm core | |
1334 | * @codec: audio codec | |
1335 | * @stream: stream name | |
1336 | * @event: stream event | |
1337 | * | |
1338 | * Sends a stream event to the dapm core. The core then makes any | |
1339 | * necessary widget power changes. | |
1340 | * | |
1341 | * Returns 0 for success else error. | |
1342 | */ | |
1343 | int snd_soc_dapm_stream_event(struct snd_soc_codec *codec, | |
1344 | char *stream, int event) | |
1345 | { | |
1346 | struct snd_soc_dapm_widget *w; | |
1347 | ||
11da21a7 SF |
1348 | if (stream == NULL) |
1349 | return 0; | |
1350 | ||
2b97eabc RP |
1351 | mutex_lock(&codec->mutex); |
1352 | list_for_each_entry(w, &codec->dapm_widgets, list) | |
1353 | { | |
1354 | if (!w->sname) | |
1355 | continue; | |
c1286b86 MB |
1356 | pr_debug("widget %s\n %s stream %s event %d\n", |
1357 | w->name, w->sname, stream, event); | |
2b97eabc RP |
1358 | if (strstr(w->sname, stream)) { |
1359 | switch(event) { | |
1360 | case SND_SOC_DAPM_STREAM_START: | |
1361 | w->active = 1; | |
1362 | break; | |
1363 | case SND_SOC_DAPM_STREAM_STOP: | |
1364 | w->active = 0; | |
1365 | break; | |
1366 | case SND_SOC_DAPM_STREAM_SUSPEND: | |
1367 | if (w->active) | |
1368 | w->suspend = 1; | |
1369 | w->active = 0; | |
1370 | break; | |
1371 | case SND_SOC_DAPM_STREAM_RESUME: | |
1372 | if (w->suspend) { | |
1373 | w->active = 1; | |
1374 | w->suspend = 0; | |
1375 | } | |
1376 | break; | |
1377 | case SND_SOC_DAPM_STREAM_PAUSE_PUSH: | |
1378 | break; | |
1379 | case SND_SOC_DAPM_STREAM_PAUSE_RELEASE: | |
1380 | break; | |
1381 | } | |
1382 | } | |
1383 | } | |
1384 | mutex_unlock(&codec->mutex); | |
1385 | ||
1386 | dapm_power_widgets(codec, event); | |
9bf8e7dd | 1387 | dump_dapm(codec, __func__); |
2b97eabc RP |
1388 | return 0; |
1389 | } | |
1390 | EXPORT_SYMBOL_GPL(snd_soc_dapm_stream_event); | |
1391 | ||
0b4d221b | 1392 | /** |
0be9898a | 1393 | * snd_soc_dapm_set_bias_level - set the bias level for the system |
0b4d221b | 1394 | * @socdev: audio device |
0be9898a | 1395 | * @level: level to configure |
0b4d221b | 1396 | * |
0be9898a | 1397 | * Configure the bias (power) levels for the SoC audio device. |
0b4d221b LG |
1398 | * |
1399 | * Returns 0 for success else error. | |
1400 | */ | |
0be9898a MB |
1401 | int snd_soc_dapm_set_bias_level(struct snd_soc_device *socdev, |
1402 | enum snd_soc_bias_level level) | |
0b4d221b LG |
1403 | { |
1404 | struct snd_soc_codec *codec = socdev->codec; | |
87506549 | 1405 | struct snd_soc_card *card = socdev->card; |
0be9898a | 1406 | int ret = 0; |
0b4d221b | 1407 | |
87506549 MB |
1408 | if (card->set_bias_level) |
1409 | ret = card->set_bias_level(card, level); | |
0be9898a MB |
1410 | if (ret == 0 && codec->set_bias_level) |
1411 | ret = codec->set_bias_level(codec, level); | |
1412 | ||
1413 | return ret; | |
0b4d221b | 1414 | } |
0b4d221b | 1415 | |
2b97eabc | 1416 | /** |
a5302181 LG |
1417 | * snd_soc_dapm_enable_pin - enable pin. |
1418 | * @snd_soc_codec: SoC codec | |
1419 | * @pin: pin name | |
2b97eabc | 1420 | * |
a5302181 LG |
1421 | * Enables input/output pin and it's parents or children widgets iff there is |
1422 | * a valid audio route and active audio stream. | |
1423 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
1424 | * do any widget power switching. | |
2b97eabc | 1425 | */ |
a5302181 | 1426 | int snd_soc_dapm_enable_pin(struct snd_soc_codec *codec, char *pin) |
2b97eabc | 1427 | { |
a5302181 LG |
1428 | return snd_soc_dapm_set_pin(codec, pin, 1); |
1429 | } | |
1430 | EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin); | |
2b97eabc | 1431 | |
a5302181 LG |
1432 | /** |
1433 | * snd_soc_dapm_disable_pin - disable pin. | |
1434 | * @codec: SoC codec | |
1435 | * @pin: pin name | |
1436 | * | |
1437 | * Disables input/output pin and it's parents or children widgets. | |
1438 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
1439 | * do any widget power switching. | |
1440 | */ | |
1441 | int snd_soc_dapm_disable_pin(struct snd_soc_codec *codec, char *pin) | |
1442 | { | |
1443 | return snd_soc_dapm_set_pin(codec, pin, 0); | |
2b97eabc | 1444 | } |
a5302181 | 1445 | EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin); |
2b97eabc | 1446 | |
5817b52a MB |
1447 | /** |
1448 | * snd_soc_dapm_nc_pin - permanently disable pin. | |
1449 | * @codec: SoC codec | |
1450 | * @pin: pin name | |
1451 | * | |
1452 | * Marks the specified pin as being not connected, disabling it along | |
1453 | * any parent or child widgets. At present this is identical to | |
1454 | * snd_soc_dapm_disable_pin() but in future it will be extended to do | |
1455 | * additional things such as disabling controls which only affect | |
1456 | * paths through the pin. | |
1457 | * | |
1458 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
1459 | * do any widget power switching. | |
1460 | */ | |
1461 | int snd_soc_dapm_nc_pin(struct snd_soc_codec *codec, char *pin) | |
1462 | { | |
1463 | return snd_soc_dapm_set_pin(codec, pin, 0); | |
1464 | } | |
1465 | EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin); | |
1466 | ||
eeec12bf | 1467 | /** |
a5302181 | 1468 | * snd_soc_dapm_get_pin_status - get audio pin status |
eeec12bf | 1469 | * @codec: audio codec |
a5302181 | 1470 | * @pin: audio signal pin endpoint (or start point) |
eeec12bf | 1471 | * |
a5302181 | 1472 | * Get audio pin status - connected or disconnected. |
eeec12bf | 1473 | * |
a5302181 | 1474 | * Returns 1 for connected otherwise 0. |
eeec12bf | 1475 | */ |
a5302181 | 1476 | int snd_soc_dapm_get_pin_status(struct snd_soc_codec *codec, char *pin) |
eeec12bf GG |
1477 | { |
1478 | struct snd_soc_dapm_widget *w; | |
1479 | ||
1480 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
a5302181 | 1481 | if (!strcmp(w->name, pin)) |
eeec12bf GG |
1482 | return w->connected; |
1483 | } | |
1484 | ||
1485 | return 0; | |
1486 | } | |
a5302181 | 1487 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status); |
eeec12bf | 1488 | |
2b97eabc RP |
1489 | /** |
1490 | * snd_soc_dapm_free - free dapm resources | |
1491 | * @socdev: SoC device | |
1492 | * | |
1493 | * Free all dapm widgets and resources. | |
1494 | */ | |
1495 | void snd_soc_dapm_free(struct snd_soc_device *socdev) | |
1496 | { | |
1497 | struct snd_soc_codec *codec = socdev->codec; | |
1498 | ||
1499 | snd_soc_dapm_sys_remove(socdev->dev); | |
1500 | dapm_free_widgets(codec); | |
1501 | } | |
1502 | EXPORT_SYMBOL_GPL(snd_soc_dapm_free); | |
1503 | ||
1504 | /* Module information */ | |
d331124d | 1505 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
2b97eabc RP |
1506 | MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC"); |
1507 | MODULE_LICENSE("GPL"); |