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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> | |
f0062a92 | 40 | #include <linux/debugfs.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 | ||
f0062a92 MB |
70 | static struct dentry *asoc_debugfs; |
71 | ||
72 | static u32 pop_time; | |
15e4c72f MB |
73 | |
74 | static void pop_wait(void) | |
75 | { | |
76 | if (pop_time) | |
77 | schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time)); | |
78 | } | |
79 | ||
80 | static void pop_dbg(const char *fmt, ...) | |
81 | { | |
82 | va_list args; | |
83 | ||
84 | va_start(args, fmt); | |
85 | ||
86 | if (pop_time) { | |
87 | vprintk(fmt, args); | |
88 | pop_wait(); | |
89 | } | |
90 | ||
91 | va_end(args); | |
92 | } | |
93 | ||
2b97eabc | 94 | /* create a new dapm widget */ |
88cb4290 | 95 | static inline struct snd_soc_dapm_widget *dapm_cnew_widget( |
2b97eabc RP |
96 | const struct snd_soc_dapm_widget *_widget) |
97 | { | |
88cb4290 | 98 | return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL); |
2b97eabc RP |
99 | } |
100 | ||
101 | /* set up initial codec paths */ | |
102 | static void dapm_set_path_status(struct snd_soc_dapm_widget *w, | |
103 | struct snd_soc_dapm_path *p, int i) | |
104 | { | |
105 | switch (w->id) { | |
106 | case snd_soc_dapm_switch: | |
107 | case snd_soc_dapm_mixer: { | |
108 | int val; | |
4eaa9819 JS |
109 | struct soc_mixer_control *mc = (struct soc_mixer_control *) |
110 | w->kcontrols[i].private_value; | |
815ecf8d JS |
111 | unsigned int reg = mc->reg; |
112 | unsigned int shift = mc->shift; | |
4eaa9819 | 113 | int max = mc->max; |
815ecf8d JS |
114 | unsigned int mask = (1 << fls(max)) - 1; |
115 | unsigned int invert = mc->invert; | |
2b97eabc RP |
116 | |
117 | val = snd_soc_read(w->codec, reg); | |
118 | val = (val >> shift) & mask; | |
119 | ||
120 | if ((invert && !val) || (!invert && val)) | |
121 | p->connect = 1; | |
122 | else | |
123 | p->connect = 0; | |
124 | } | |
125 | break; | |
126 | case snd_soc_dapm_mux: { | |
127 | struct soc_enum *e = (struct soc_enum *)w->kcontrols[i].private_value; | |
128 | int val, item, bitmask; | |
129 | ||
f8ba0b7b | 130 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
131 | ; |
132 | val = snd_soc_read(w->codec, e->reg); | |
133 | item = (val >> e->shift_l) & (bitmask - 1); | |
134 | ||
135 | p->connect = 0; | |
f8ba0b7b | 136 | for (i = 0; i < e->max; i++) { |
2b97eabc RP |
137 | if (!(strcmp(p->name, e->texts[i])) && item == i) |
138 | p->connect = 1; | |
139 | } | |
140 | } | |
141 | break; | |
142 | /* does not effect routing - always connected */ | |
143 | case snd_soc_dapm_pga: | |
144 | case snd_soc_dapm_output: | |
145 | case snd_soc_dapm_adc: | |
146 | case snd_soc_dapm_input: | |
147 | case snd_soc_dapm_dac: | |
148 | case snd_soc_dapm_micbias: | |
149 | case snd_soc_dapm_vmid: | |
150 | p->connect = 1; | |
151 | break; | |
152 | /* does effect routing - dynamically connected */ | |
153 | case snd_soc_dapm_hp: | |
154 | case snd_soc_dapm_mic: | |
155 | case snd_soc_dapm_spk: | |
156 | case snd_soc_dapm_line: | |
157 | case snd_soc_dapm_pre: | |
158 | case snd_soc_dapm_post: | |
159 | p->connect = 0; | |
160 | break; | |
161 | } | |
162 | } | |
163 | ||
164 | /* connect mux widget to it's interconnecting audio paths */ | |
165 | static int dapm_connect_mux(struct snd_soc_codec *codec, | |
166 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, | |
167 | struct snd_soc_dapm_path *path, const char *control_name, | |
168 | const struct snd_kcontrol_new *kcontrol) | |
169 | { | |
170 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
171 | int i; | |
172 | ||
f8ba0b7b | 173 | for (i = 0; i < e->max; i++) { |
2b97eabc RP |
174 | if (!(strcmp(control_name, e->texts[i]))) { |
175 | list_add(&path->list, &codec->dapm_paths); | |
176 | list_add(&path->list_sink, &dest->sources); | |
177 | list_add(&path->list_source, &src->sinks); | |
178 | path->name = (char*)e->texts[i]; | |
179 | dapm_set_path_status(dest, path, 0); | |
180 | return 0; | |
181 | } | |
182 | } | |
183 | ||
184 | return -ENODEV; | |
185 | } | |
186 | ||
187 | /* connect mixer widget to it's interconnecting audio paths */ | |
188 | static int dapm_connect_mixer(struct snd_soc_codec *codec, | |
189 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, | |
190 | struct snd_soc_dapm_path *path, const char *control_name) | |
191 | { | |
192 | int i; | |
193 | ||
194 | /* search for mixer kcontrol */ | |
195 | for (i = 0; i < dest->num_kcontrols; i++) { | |
196 | if (!strcmp(control_name, dest->kcontrols[i].name)) { | |
197 | list_add(&path->list, &codec->dapm_paths); | |
198 | list_add(&path->list_sink, &dest->sources); | |
199 | list_add(&path->list_source, &src->sinks); | |
200 | path->name = dest->kcontrols[i].name; | |
201 | dapm_set_path_status(dest, path, i); | |
202 | return 0; | |
203 | } | |
204 | } | |
205 | return -ENODEV; | |
206 | } | |
207 | ||
208 | /* update dapm codec register bits */ | |
209 | static int dapm_update_bits(struct snd_soc_dapm_widget *widget) | |
210 | { | |
211 | int change, power; | |
212 | unsigned short old, new; | |
213 | struct snd_soc_codec *codec = widget->codec; | |
214 | ||
215 | /* check for valid widgets */ | |
216 | if (widget->reg < 0 || widget->id == snd_soc_dapm_input || | |
217 | widget->id == snd_soc_dapm_output || | |
218 | widget->id == snd_soc_dapm_hp || | |
219 | widget->id == snd_soc_dapm_mic || | |
220 | widget->id == snd_soc_dapm_line || | |
221 | widget->id == snd_soc_dapm_spk) | |
222 | return 0; | |
223 | ||
224 | power = widget->power; | |
225 | if (widget->invert) | |
226 | power = (power ? 0:1); | |
227 | ||
228 | old = snd_soc_read(codec, widget->reg); | |
229 | new = (old & ~(0x1 << widget->shift)) | (power << widget->shift); | |
230 | ||
231 | change = old != new; | |
232 | if (change) { | |
233 | pop_dbg("pop test %s : %s in %d ms\n", widget->name, | |
15e4c72f | 234 | widget->power ? "on" : "off", pop_time); |
2b97eabc | 235 | snd_soc_write(codec, widget->reg, new); |
15e4c72f | 236 | pop_wait(); |
2b97eabc | 237 | } |
c1286b86 MB |
238 | pr_debug("reg %x old %x new %x change %d\n", widget->reg, |
239 | old, new, change); | |
2b97eabc RP |
240 | return change; |
241 | } | |
242 | ||
243 | /* ramps the volume up or down to minimise pops before or after a | |
244 | * DAPM power event */ | |
245 | static int dapm_set_pga(struct snd_soc_dapm_widget *widget, int power) | |
246 | { | |
247 | const struct snd_kcontrol_new *k = widget->kcontrols; | |
248 | ||
249 | if (widget->muted && !power) | |
250 | return 0; | |
251 | if (!widget->muted && power) | |
252 | return 0; | |
253 | ||
254 | if (widget->num_kcontrols && k) { | |
4eaa9819 JS |
255 | struct soc_mixer_control *mc = |
256 | (struct soc_mixer_control *)k->private_value; | |
815ecf8d JS |
257 | unsigned int reg = mc->reg; |
258 | unsigned int shift = mc->shift; | |
4eaa9819 | 259 | int max = mc->max; |
815ecf8d JS |
260 | unsigned int mask = (1 << fls(max)) - 1; |
261 | unsigned int invert = mc->invert; | |
2b97eabc RP |
262 | |
263 | if (power) { | |
264 | int i; | |
265 | /* power up has happended, increase volume to last level */ | |
266 | if (invert) { | |
4eaa9819 | 267 | for (i = max; i > widget->saved_value; i--) |
2b97eabc RP |
268 | snd_soc_update_bits(widget->codec, reg, mask, i); |
269 | } else { | |
270 | for (i = 0; i < widget->saved_value; i++) | |
271 | snd_soc_update_bits(widget->codec, reg, mask, i); | |
272 | } | |
273 | widget->muted = 0; | |
274 | } else { | |
275 | /* power down is about to occur, decrease volume to mute */ | |
276 | int val = snd_soc_read(widget->codec, reg); | |
277 | int i = widget->saved_value = (val >> shift) & mask; | |
278 | if (invert) { | |
279 | for (; i < mask; i++) | |
280 | snd_soc_update_bits(widget->codec, reg, mask, i); | |
281 | } else { | |
282 | for (; i > 0; i--) | |
283 | snd_soc_update_bits(widget->codec, reg, mask, i); | |
284 | } | |
285 | widget->muted = 1; | |
286 | } | |
287 | } | |
288 | return 0; | |
289 | } | |
290 | ||
291 | /* create new dapm mixer control */ | |
292 | static int dapm_new_mixer(struct snd_soc_codec *codec, | |
293 | struct snd_soc_dapm_widget *w) | |
294 | { | |
295 | int i, ret = 0; | |
296 | char name[32]; | |
297 | struct snd_soc_dapm_path *path; | |
298 | ||
299 | /* add kcontrol */ | |
300 | for (i = 0; i < w->num_kcontrols; i++) { | |
301 | ||
302 | /* match name */ | |
303 | list_for_each_entry(path, &w->sources, list_sink) { | |
304 | ||
305 | /* mixer/mux paths name must match control name */ | |
306 | if (path->name != (char*)w->kcontrols[i].name) | |
307 | continue; | |
308 | ||
309 | /* add dapm control with long name */ | |
310 | snprintf(name, 32, "%s %s", w->name, w->kcontrols[i].name); | |
311 | path->long_name = kstrdup (name, GFP_KERNEL); | |
312 | if (path->long_name == NULL) | |
313 | return -ENOMEM; | |
314 | ||
315 | path->kcontrol = snd_soc_cnew(&w->kcontrols[i], w, | |
316 | path->long_name); | |
317 | ret = snd_ctl_add(codec->card, path->kcontrol); | |
318 | if (ret < 0) { | |
319 | printk(KERN_ERR "asoc: failed to add dapm kcontrol %s\n", | |
320 | path->long_name); | |
321 | kfree(path->long_name); | |
322 | path->long_name = NULL; | |
323 | return ret; | |
324 | } | |
325 | } | |
326 | } | |
327 | return ret; | |
328 | } | |
329 | ||
330 | /* create new dapm mux control */ | |
331 | static int dapm_new_mux(struct snd_soc_codec *codec, | |
332 | struct snd_soc_dapm_widget *w) | |
333 | { | |
334 | struct snd_soc_dapm_path *path = NULL; | |
335 | struct snd_kcontrol *kcontrol; | |
336 | int ret = 0; | |
337 | ||
338 | if (!w->num_kcontrols) { | |
339 | printk(KERN_ERR "asoc: mux %s has no controls\n", w->name); | |
340 | return -EINVAL; | |
341 | } | |
342 | ||
343 | kcontrol = snd_soc_cnew(&w->kcontrols[0], w, w->name); | |
344 | ret = snd_ctl_add(codec->card, kcontrol); | |
345 | if (ret < 0) | |
346 | goto err; | |
347 | ||
348 | list_for_each_entry(path, &w->sources, list_sink) | |
349 | path->kcontrol = kcontrol; | |
350 | ||
351 | return ret; | |
352 | ||
353 | err: | |
354 | printk(KERN_ERR "asoc: failed to add kcontrol %s\n", w->name); | |
355 | return ret; | |
356 | } | |
357 | ||
358 | /* create new dapm volume control */ | |
359 | static int dapm_new_pga(struct snd_soc_codec *codec, | |
360 | struct snd_soc_dapm_widget *w) | |
361 | { | |
362 | struct snd_kcontrol *kcontrol; | |
363 | int ret = 0; | |
364 | ||
365 | if (!w->num_kcontrols) | |
366 | return -EINVAL; | |
367 | ||
368 | kcontrol = snd_soc_cnew(&w->kcontrols[0], w, w->name); | |
369 | ret = snd_ctl_add(codec->card, kcontrol); | |
370 | if (ret < 0) { | |
371 | printk(KERN_ERR "asoc: failed to add kcontrol %s\n", w->name); | |
372 | return ret; | |
373 | } | |
374 | ||
375 | return ret; | |
376 | } | |
377 | ||
378 | /* reset 'walked' bit for each dapm path */ | |
379 | static inline void dapm_clear_walk(struct snd_soc_codec *codec) | |
380 | { | |
381 | struct snd_soc_dapm_path *p; | |
382 | ||
383 | list_for_each_entry(p, &codec->dapm_paths, list) | |
384 | p->walked = 0; | |
385 | } | |
386 | ||
387 | /* | |
388 | * Recursively check for a completed path to an active or physically connected | |
389 | * output widget. Returns number of complete paths. | |
390 | */ | |
391 | static int is_connected_output_ep(struct snd_soc_dapm_widget *widget) | |
392 | { | |
393 | struct snd_soc_dapm_path *path; | |
394 | int con = 0; | |
395 | ||
396 | if (widget->id == snd_soc_dapm_adc && widget->active) | |
397 | return 1; | |
398 | ||
399 | if (widget->connected) { | |
400 | /* connected pin ? */ | |
401 | if (widget->id == snd_soc_dapm_output && !widget->ext) | |
402 | return 1; | |
403 | ||
404 | /* connected jack or spk ? */ | |
405 | if (widget->id == snd_soc_dapm_hp || widget->id == snd_soc_dapm_spk || | |
406 | widget->id == snd_soc_dapm_line) | |
407 | return 1; | |
408 | } | |
409 | ||
410 | list_for_each_entry(path, &widget->sinks, list_source) { | |
411 | if (path->walked) | |
412 | continue; | |
413 | ||
414 | if (path->sink && path->connect) { | |
415 | path->walked = 1; | |
416 | con += is_connected_output_ep(path->sink); | |
417 | } | |
418 | } | |
419 | ||
420 | return con; | |
421 | } | |
422 | ||
423 | /* | |
424 | * Recursively check for a completed path to an active or physically connected | |
425 | * input widget. Returns number of complete paths. | |
426 | */ | |
427 | static int is_connected_input_ep(struct snd_soc_dapm_widget *widget) | |
428 | { | |
429 | struct snd_soc_dapm_path *path; | |
430 | int con = 0; | |
431 | ||
432 | /* active stream ? */ | |
433 | if (widget->id == snd_soc_dapm_dac && widget->active) | |
434 | return 1; | |
435 | ||
436 | if (widget->connected) { | |
437 | /* connected pin ? */ | |
438 | if (widget->id == snd_soc_dapm_input && !widget->ext) | |
439 | return 1; | |
440 | ||
441 | /* connected VMID/Bias for lower pops */ | |
442 | if (widget->id == snd_soc_dapm_vmid) | |
443 | return 1; | |
444 | ||
445 | /* connected jack ? */ | |
446 | if (widget->id == snd_soc_dapm_mic || widget->id == snd_soc_dapm_line) | |
447 | return 1; | |
448 | } | |
449 | ||
450 | list_for_each_entry(path, &widget->sources, list_sink) { | |
451 | if (path->walked) | |
452 | continue; | |
453 | ||
454 | if (path->source && path->connect) { | |
455 | path->walked = 1; | |
456 | con += is_connected_input_ep(path->source); | |
457 | } | |
458 | } | |
459 | ||
460 | return con; | |
461 | } | |
462 | ||
e2be2ccf JN |
463 | /* |
464 | * Handler for generic register modifier widget. | |
465 | */ | |
466 | int dapm_reg_event(struct snd_soc_dapm_widget *w, | |
467 | struct snd_kcontrol *kcontrol, int event) | |
468 | { | |
469 | unsigned int val; | |
470 | ||
471 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
472 | val = w->on_val; | |
473 | else | |
474 | val = w->off_val; | |
475 | ||
476 | snd_soc_update_bits(w->codec, -(w->reg + 1), | |
477 | w->mask << w->shift, val << w->shift); | |
478 | ||
479 | return 0; | |
480 | } | |
11589418 | 481 | EXPORT_SYMBOL_GPL(dapm_reg_event); |
e2be2ccf | 482 | |
2b97eabc RP |
483 | /* |
484 | * Scan each dapm widget for complete audio path. | |
485 | * A complete path is a route that has valid endpoints i.e.:- | |
486 | * | |
487 | * o DAC to output pin. | |
488 | * o Input Pin to ADC. | |
489 | * o Input pin to Output pin (bypass, sidetone) | |
490 | * o DAC to ADC (loopback). | |
491 | */ | |
d9c96cf3 | 492 | static int dapm_power_widgets(struct snd_soc_codec *codec, int event) |
2b97eabc RP |
493 | { |
494 | struct snd_soc_dapm_widget *w; | |
495 | int in, out, i, c = 1, *seq = NULL, ret = 0, power_change, power; | |
496 | ||
497 | /* do we have a sequenced stream event */ | |
498 | if (event == SND_SOC_DAPM_STREAM_START) { | |
499 | c = ARRAY_SIZE(dapm_up_seq); | |
500 | seq = dapm_up_seq; | |
501 | } else if (event == SND_SOC_DAPM_STREAM_STOP) { | |
502 | c = ARRAY_SIZE(dapm_down_seq); | |
503 | seq = dapm_down_seq; | |
504 | } | |
505 | ||
506 | for(i = 0; i < c; i++) { | |
507 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
508 | ||
509 | /* is widget in stream order */ | |
510 | if (seq && seq[i] && w->id != seq[i]) | |
511 | continue; | |
512 | ||
513 | /* vmid - no action */ | |
514 | if (w->id == snd_soc_dapm_vmid) | |
515 | continue; | |
516 | ||
517 | /* active ADC */ | |
518 | if (w->id == snd_soc_dapm_adc && w->active) { | |
519 | in = is_connected_input_ep(w); | |
520 | dapm_clear_walk(w->codec); | |
521 | w->power = (in != 0) ? 1 : 0; | |
522 | dapm_update_bits(w); | |
523 | continue; | |
524 | } | |
525 | ||
526 | /* active DAC */ | |
527 | if (w->id == snd_soc_dapm_dac && w->active) { | |
528 | out = is_connected_output_ep(w); | |
529 | dapm_clear_walk(w->codec); | |
530 | w->power = (out != 0) ? 1 : 0; | |
531 | dapm_update_bits(w); | |
532 | continue; | |
533 | } | |
534 | ||
2b97eabc RP |
535 | /* pre and post event widgets */ |
536 | if (w->id == snd_soc_dapm_pre) { | |
537 | if (!w->event) | |
538 | continue; | |
539 | ||
540 | if (event == SND_SOC_DAPM_STREAM_START) { | |
9af6d956 LG |
541 | ret = w->event(w, |
542 | NULL, SND_SOC_DAPM_PRE_PMU); | |
2b97eabc RP |
543 | if (ret < 0) |
544 | return ret; | |
545 | } else if (event == SND_SOC_DAPM_STREAM_STOP) { | |
9af6d956 LG |
546 | ret = w->event(w, |
547 | NULL, SND_SOC_DAPM_PRE_PMD); | |
2b97eabc RP |
548 | if (ret < 0) |
549 | return ret; | |
550 | } | |
551 | continue; | |
552 | } | |
553 | if (w->id == snd_soc_dapm_post) { | |
554 | if (!w->event) | |
555 | continue; | |
556 | ||
557 | if (event == SND_SOC_DAPM_STREAM_START) { | |
9af6d956 LG |
558 | ret = w->event(w, |
559 | NULL, SND_SOC_DAPM_POST_PMU); | |
2b97eabc RP |
560 | if (ret < 0) |
561 | return ret; | |
562 | } else if (event == SND_SOC_DAPM_STREAM_STOP) { | |
9af6d956 LG |
563 | ret = w->event(w, |
564 | NULL, SND_SOC_DAPM_POST_PMD); | |
2b97eabc RP |
565 | if (ret < 0) |
566 | return ret; | |
567 | } | |
568 | continue; | |
569 | } | |
570 | ||
571 | /* all other widgets */ | |
572 | in = is_connected_input_ep(w); | |
573 | dapm_clear_walk(w->codec); | |
574 | out = is_connected_output_ep(w); | |
575 | dapm_clear_walk(w->codec); | |
576 | power = (out != 0 && in != 0) ? 1 : 0; | |
577 | power_change = (w->power == power) ? 0: 1; | |
578 | w->power = power; | |
579 | ||
2927d6ee MB |
580 | if (!power_change) |
581 | continue; | |
582 | ||
2b97eabc | 583 | /* call any power change event handlers */ |
2927d6ee MB |
584 | if (w->event) |
585 | pr_debug("power %s event for %s flags %x\n", | |
586 | w->power ? "on" : "off", | |
587 | w->name, w->event_flags); | |
588 | ||
589 | /* power up pre event */ | |
590 | if (power && w->event && | |
591 | (w->event_flags & SND_SOC_DAPM_PRE_PMU)) { | |
592 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMU); | |
593 | if (ret < 0) | |
594 | return ret; | |
595 | } | |
596 | ||
597 | /* power down pre event */ | |
598 | if (!power && w->event && | |
599 | (w->event_flags & SND_SOC_DAPM_PRE_PMD)) { | |
600 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMD); | |
601 | if (ret < 0) | |
602 | return ret; | |
603 | } | |
604 | ||
9dd8d812 MB |
605 | /* Lower PGA volume to reduce pops */ |
606 | if (w->id == snd_soc_dapm_pga && !power) | |
607 | dapm_set_pga(w, power); | |
608 | ||
2927d6ee MB |
609 | dapm_update_bits(w); |
610 | ||
9dd8d812 MB |
611 | /* Raise PGA volume to reduce pops */ |
612 | if (w->id == snd_soc_dapm_pga && power) | |
613 | dapm_set_pga(w, power); | |
614 | ||
2927d6ee MB |
615 | /* power up post event */ |
616 | if (power && w->event && | |
617 | (w->event_flags & SND_SOC_DAPM_POST_PMU)) { | |
618 | ret = w->event(w, | |
619 | NULL, SND_SOC_DAPM_POST_PMU); | |
620 | if (ret < 0) | |
621 | return ret; | |
622 | } | |
623 | ||
624 | /* power down post event */ | |
625 | if (!power && w->event && | |
626 | (w->event_flags & SND_SOC_DAPM_POST_PMD)) { | |
627 | ret = w->event(w, NULL, SND_SOC_DAPM_POST_PMD); | |
628 | if (ret < 0) | |
629 | return ret; | |
2b97eabc RP |
630 | } |
631 | } | |
632 | } | |
633 | ||
634 | return ret; | |
635 | } | |
636 | ||
c1286b86 | 637 | #ifdef DEBUG |
2b97eabc RP |
638 | static void dbg_dump_dapm(struct snd_soc_codec* codec, const char *action) |
639 | { | |
640 | struct snd_soc_dapm_widget *w; | |
641 | struct snd_soc_dapm_path *p = NULL; | |
642 | int in, out; | |
643 | ||
644 | printk("DAPM %s %s\n", codec->name, action); | |
645 | ||
646 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
647 | ||
648 | /* only display widgets that effect routing */ | |
649 | switch (w->id) { | |
650 | case snd_soc_dapm_pre: | |
651 | case snd_soc_dapm_post: | |
652 | case snd_soc_dapm_vmid: | |
653 | continue; | |
654 | case snd_soc_dapm_mux: | |
655 | case snd_soc_dapm_output: | |
656 | case snd_soc_dapm_input: | |
657 | case snd_soc_dapm_switch: | |
658 | case snd_soc_dapm_hp: | |
659 | case snd_soc_dapm_mic: | |
660 | case snd_soc_dapm_spk: | |
661 | case snd_soc_dapm_line: | |
662 | case snd_soc_dapm_micbias: | |
663 | case snd_soc_dapm_dac: | |
664 | case snd_soc_dapm_adc: | |
665 | case snd_soc_dapm_pga: | |
666 | case snd_soc_dapm_mixer: | |
667 | if (w->name) { | |
668 | in = is_connected_input_ep(w); | |
669 | dapm_clear_walk(w->codec); | |
670 | out = is_connected_output_ep(w); | |
671 | dapm_clear_walk(w->codec); | |
672 | printk("%s: %s in %d out %d\n", w->name, | |
673 | w->power ? "On":"Off",in, out); | |
674 | ||
675 | list_for_each_entry(p, &w->sources, list_sink) { | |
676 | if (p->connect) | |
677 | printk(" in %s %s\n", p->name ? p->name : "static", | |
678 | p->source->name); | |
679 | } | |
680 | list_for_each_entry(p, &w->sinks, list_source) { | |
2b97eabc RP |
681 | if (p->connect) |
682 | printk(" out %s %s\n", p->name ? p->name : "static", | |
683 | p->sink->name); | |
684 | } | |
685 | } | |
686 | break; | |
687 | } | |
688 | } | |
689 | } | |
690 | #endif | |
691 | ||
692 | /* test and update the power status of a mux widget */ | |
d9c96cf3 AB |
693 | static int dapm_mux_update_power(struct snd_soc_dapm_widget *widget, |
694 | struct snd_kcontrol *kcontrol, int mask, | |
cb01e2b9 | 695 | int mux, int val, struct soc_enum *e) |
2b97eabc RP |
696 | { |
697 | struct snd_soc_dapm_path *path; | |
698 | int found = 0; | |
699 | ||
700 | if (widget->id != snd_soc_dapm_mux) | |
701 | return -ENODEV; | |
702 | ||
703 | if (!snd_soc_test_bits(widget->codec, e->reg, mask, val)) | |
704 | return 0; | |
705 | ||
706 | /* find dapm widget path assoc with kcontrol */ | |
707 | list_for_each_entry(path, &widget->codec->dapm_paths, list) { | |
708 | if (path->kcontrol != kcontrol) | |
709 | continue; | |
710 | ||
cb01e2b9 | 711 | if (!path->name || !e->texts[mux]) |
2b97eabc RP |
712 | continue; |
713 | ||
714 | found = 1; | |
715 | /* we now need to match the string in the enum to the path */ | |
cb01e2b9 | 716 | if (!(strcmp(path->name, e->texts[mux]))) |
2b97eabc RP |
717 | path->connect = 1; /* new connection */ |
718 | else | |
719 | path->connect = 0; /* old connection must be powered down */ | |
720 | } | |
721 | ||
3fccd8b1 | 722 | if (found) { |
2b97eabc | 723 | dapm_power_widgets(widget->codec, SND_SOC_DAPM_STREAM_NOP); |
3fccd8b1 MB |
724 | dump_dapm(widget->codec, "mux power update"); |
725 | } | |
2b97eabc RP |
726 | |
727 | return 0; | |
728 | } | |
2b97eabc | 729 | |
1b075e3f | 730 | /* test and update the power status of a mixer or switch widget */ |
d9c96cf3 AB |
731 | static int dapm_mixer_update_power(struct snd_soc_dapm_widget *widget, |
732 | struct snd_kcontrol *kcontrol, int reg, | |
733 | int val_mask, int val, int invert) | |
2b97eabc RP |
734 | { |
735 | struct snd_soc_dapm_path *path; | |
736 | int found = 0; | |
737 | ||
1b075e3f M |
738 | if (widget->id != snd_soc_dapm_mixer && |
739 | widget->id != snd_soc_dapm_switch) | |
2b97eabc RP |
740 | return -ENODEV; |
741 | ||
742 | if (!snd_soc_test_bits(widget->codec, reg, val_mask, val)) | |
743 | return 0; | |
744 | ||
745 | /* find dapm widget path assoc with kcontrol */ | |
746 | list_for_each_entry(path, &widget->codec->dapm_paths, list) { | |
747 | if (path->kcontrol != kcontrol) | |
748 | continue; | |
749 | ||
750 | /* found, now check type */ | |
751 | found = 1; | |
752 | if (val) | |
753 | /* new connection */ | |
754 | path->connect = invert ? 0:1; | |
755 | else | |
756 | /* old connection must be powered down */ | |
757 | path->connect = invert ? 1:0; | |
758 | break; | |
759 | } | |
760 | ||
3fccd8b1 | 761 | if (found) { |
2b97eabc | 762 | dapm_power_widgets(widget->codec, SND_SOC_DAPM_STREAM_NOP); |
3fccd8b1 MB |
763 | dump_dapm(widget->codec, "mixer power update"); |
764 | } | |
2b97eabc RP |
765 | |
766 | return 0; | |
767 | } | |
2b97eabc RP |
768 | |
769 | /* show dapm widget status in sys fs */ | |
770 | static ssize_t dapm_widget_show(struct device *dev, | |
771 | struct device_attribute *attr, char *buf) | |
772 | { | |
773 | struct snd_soc_device *devdata = dev_get_drvdata(dev); | |
774 | struct snd_soc_codec *codec = devdata->codec; | |
775 | struct snd_soc_dapm_widget *w; | |
776 | int count = 0; | |
777 | char *state = "not set"; | |
778 | ||
779 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
780 | ||
781 | /* only display widgets that burnm power */ | |
782 | switch (w->id) { | |
783 | case snd_soc_dapm_hp: | |
784 | case snd_soc_dapm_mic: | |
785 | case snd_soc_dapm_spk: | |
786 | case snd_soc_dapm_line: | |
787 | case snd_soc_dapm_micbias: | |
788 | case snd_soc_dapm_dac: | |
789 | case snd_soc_dapm_adc: | |
790 | case snd_soc_dapm_pga: | |
791 | case snd_soc_dapm_mixer: | |
792 | if (w->name) | |
793 | count += sprintf(buf + count, "%s: %s\n", | |
794 | w->name, w->power ? "On":"Off"); | |
795 | break; | |
796 | default: | |
797 | break; | |
798 | } | |
799 | } | |
800 | ||
0be9898a MB |
801 | switch (codec->bias_level) { |
802 | case SND_SOC_BIAS_ON: | |
803 | state = "On"; | |
2b97eabc | 804 | break; |
0be9898a MB |
805 | case SND_SOC_BIAS_PREPARE: |
806 | state = "Prepare"; | |
2b97eabc | 807 | break; |
0be9898a MB |
808 | case SND_SOC_BIAS_STANDBY: |
809 | state = "Standby"; | |
2b97eabc | 810 | break; |
0be9898a MB |
811 | case SND_SOC_BIAS_OFF: |
812 | state = "Off"; | |
2b97eabc RP |
813 | break; |
814 | } | |
815 | count += sprintf(buf + count, "PM State: %s\n", state); | |
816 | ||
817 | return count; | |
818 | } | |
819 | ||
820 | static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL); | |
821 | ||
822 | int snd_soc_dapm_sys_add(struct device *dev) | |
823 | { | |
824 | int ret = 0; | |
825 | ||
f0062a92 MB |
826 | if (!dapm_status) |
827 | return 0; | |
2b97eabc | 828 | |
f0062a92 MB |
829 | ret = device_create_file(dev, &dev_attr_dapm_widget); |
830 | if (ret != 0) | |
831 | return ret; | |
15e4c72f | 832 | |
f0062a92 MB |
833 | asoc_debugfs = debugfs_create_dir("asoc", NULL); |
834 | if (!IS_ERR(asoc_debugfs)) | |
835 | debugfs_create_u32("dapm_pop_time", 0744, asoc_debugfs, | |
836 | &pop_time); | |
837 | else | |
838 | asoc_debugfs = NULL; | |
839 | ||
840 | return 0; | |
2b97eabc RP |
841 | } |
842 | ||
843 | static void snd_soc_dapm_sys_remove(struct device *dev) | |
844 | { | |
15e4c72f | 845 | if (dapm_status) { |
2b97eabc | 846 | device_remove_file(dev, &dev_attr_dapm_widget); |
15e4c72f | 847 | } |
f0062a92 MB |
848 | |
849 | if (asoc_debugfs) | |
850 | debugfs_remove_recursive(asoc_debugfs); | |
2b97eabc RP |
851 | } |
852 | ||
853 | /* free all dapm widgets and resources */ | |
d9c96cf3 | 854 | static void dapm_free_widgets(struct snd_soc_codec *codec) |
2b97eabc RP |
855 | { |
856 | struct snd_soc_dapm_widget *w, *next_w; | |
857 | struct snd_soc_dapm_path *p, *next_p; | |
858 | ||
859 | list_for_each_entry_safe(w, next_w, &codec->dapm_widgets, list) { | |
860 | list_del(&w->list); | |
861 | kfree(w); | |
862 | } | |
863 | ||
864 | list_for_each_entry_safe(p, next_p, &codec->dapm_paths, list) { | |
865 | list_del(&p->list); | |
866 | kfree(p->long_name); | |
867 | kfree(p); | |
868 | } | |
869 | } | |
870 | ||
a5302181 LG |
871 | static int snd_soc_dapm_set_pin(struct snd_soc_codec *codec, |
872 | char *pin, int status) | |
873 | { | |
874 | struct snd_soc_dapm_widget *w; | |
875 | ||
876 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
877 | if (!strcmp(w->name, pin)) { | |
c1286b86 | 878 | pr_debug("dapm: %s: pin %s\n", codec->name, pin); |
a5302181 LG |
879 | w->connected = status; |
880 | return 0; | |
881 | } | |
882 | } | |
883 | ||
c1286b86 | 884 | pr_err("dapm: %s: configuring unknown pin %s\n", codec->name, pin); |
a5302181 LG |
885 | return -EINVAL; |
886 | } | |
887 | ||
2b97eabc | 888 | /** |
a5302181 | 889 | * snd_soc_dapm_sync - scan and power dapm paths |
2b97eabc RP |
890 | * @codec: audio codec |
891 | * | |
892 | * Walks all dapm audio paths and powers widgets according to their | |
893 | * stream or path usage. | |
894 | * | |
895 | * Returns 0 for success. | |
896 | */ | |
a5302181 | 897 | int snd_soc_dapm_sync(struct snd_soc_codec *codec) |
2b97eabc | 898 | { |
3fccd8b1 MB |
899 | int ret = dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP); |
900 | dump_dapm(codec, "sync"); | |
901 | return ret; | |
2b97eabc | 902 | } |
a5302181 | 903 | EXPORT_SYMBOL_GPL(snd_soc_dapm_sync); |
2b97eabc | 904 | |
105f1c28 MB |
905 | static int snd_soc_dapm_add_route(struct snd_soc_codec *codec, |
906 | const char *sink, const char *control, const char *source) | |
2b97eabc RP |
907 | { |
908 | struct snd_soc_dapm_path *path; | |
909 | struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w; | |
910 | int ret = 0; | |
911 | ||
912 | /* find src and dest widgets */ | |
913 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
914 | ||
915 | if (!wsink && !(strcmp(w->name, sink))) { | |
916 | wsink = w; | |
917 | continue; | |
918 | } | |
919 | if (!wsource && !(strcmp(w->name, source))) { | |
920 | wsource = w; | |
921 | } | |
922 | } | |
923 | ||
924 | if (wsource == NULL || wsink == NULL) | |
925 | return -ENODEV; | |
926 | ||
927 | path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL); | |
928 | if (!path) | |
929 | return -ENOMEM; | |
930 | ||
931 | path->source = wsource; | |
932 | path->sink = wsink; | |
933 | INIT_LIST_HEAD(&path->list); | |
934 | INIT_LIST_HEAD(&path->list_source); | |
935 | INIT_LIST_HEAD(&path->list_sink); | |
936 | ||
937 | /* check for external widgets */ | |
938 | if (wsink->id == snd_soc_dapm_input) { | |
939 | if (wsource->id == snd_soc_dapm_micbias || | |
940 | wsource->id == snd_soc_dapm_mic || | |
1e39221e SF |
941 | wsink->id == snd_soc_dapm_line || |
942 | wsink->id == snd_soc_dapm_output) | |
2b97eabc RP |
943 | wsink->ext = 1; |
944 | } | |
945 | if (wsource->id == snd_soc_dapm_output) { | |
946 | if (wsink->id == snd_soc_dapm_spk || | |
947 | wsink->id == snd_soc_dapm_hp || | |
1e39221e SF |
948 | wsink->id == snd_soc_dapm_line || |
949 | wsink->id == snd_soc_dapm_input) | |
2b97eabc RP |
950 | wsource->ext = 1; |
951 | } | |
952 | ||
953 | /* connect static paths */ | |
954 | if (control == NULL) { | |
955 | list_add(&path->list, &codec->dapm_paths); | |
956 | list_add(&path->list_sink, &wsink->sources); | |
957 | list_add(&path->list_source, &wsource->sinks); | |
958 | path->connect = 1; | |
959 | return 0; | |
960 | } | |
961 | ||
962 | /* connect dynamic paths */ | |
963 | switch(wsink->id) { | |
964 | case snd_soc_dapm_adc: | |
965 | case snd_soc_dapm_dac: | |
966 | case snd_soc_dapm_pga: | |
967 | case snd_soc_dapm_input: | |
968 | case snd_soc_dapm_output: | |
969 | case snd_soc_dapm_micbias: | |
970 | case snd_soc_dapm_vmid: | |
971 | case snd_soc_dapm_pre: | |
972 | case snd_soc_dapm_post: | |
973 | list_add(&path->list, &codec->dapm_paths); | |
974 | list_add(&path->list_sink, &wsink->sources); | |
975 | list_add(&path->list_source, &wsource->sinks); | |
976 | path->connect = 1; | |
977 | return 0; | |
978 | case snd_soc_dapm_mux: | |
979 | ret = dapm_connect_mux(codec, wsource, wsink, path, control, | |
980 | &wsink->kcontrols[0]); | |
981 | if (ret != 0) | |
982 | goto err; | |
983 | break; | |
984 | case snd_soc_dapm_switch: | |
985 | case snd_soc_dapm_mixer: | |
986 | ret = dapm_connect_mixer(codec, wsource, wsink, path, control); | |
987 | if (ret != 0) | |
988 | goto err; | |
989 | break; | |
990 | case snd_soc_dapm_hp: | |
991 | case snd_soc_dapm_mic: | |
992 | case snd_soc_dapm_line: | |
993 | case snd_soc_dapm_spk: | |
994 | list_add(&path->list, &codec->dapm_paths); | |
995 | list_add(&path->list_sink, &wsink->sources); | |
996 | list_add(&path->list_source, &wsource->sinks); | |
997 | path->connect = 0; | |
998 | return 0; | |
999 | } | |
1000 | return 0; | |
1001 | ||
1002 | err: | |
1003 | printk(KERN_WARNING "asoc: no dapm match for %s --> %s --> %s\n", source, | |
1004 | control, sink); | |
1005 | kfree(path); | |
1006 | return ret; | |
1007 | } | |
105f1c28 MB |
1008 | |
1009 | /** | |
1010 | * snd_soc_dapm_connect_input - connect dapm widgets | |
1011 | * @codec: audio codec | |
1012 | * @sink: name of target widget | |
1013 | * @control: mixer control name | |
1014 | * @source: name of source name | |
1015 | * | |
1016 | * Connects 2 dapm widgets together via a named audio path. The sink is | |
1017 | * the widget receiving the audio signal, whilst the source is the sender | |
1018 | * of the audio signal. | |
1019 | * | |
1020 | * This function has been deprecated in favour of snd_soc_dapm_add_routes(). | |
1021 | * | |
1022 | * Returns 0 for success else error. | |
1023 | */ | |
1024 | int snd_soc_dapm_connect_input(struct snd_soc_codec *codec, const char *sink, | |
1025 | const char *control, const char *source) | |
1026 | { | |
1027 | return snd_soc_dapm_add_route(codec, sink, control, source); | |
1028 | } | |
2b97eabc RP |
1029 | EXPORT_SYMBOL_GPL(snd_soc_dapm_connect_input); |
1030 | ||
105f1c28 MB |
1031 | /** |
1032 | * snd_soc_dapm_add_routes - Add routes between DAPM widgets | |
1033 | * @codec: codec | |
1034 | * @route: audio routes | |
1035 | * @num: number of routes | |
1036 | * | |
1037 | * Connects 2 dapm widgets together via a named audio path. The sink is | |
1038 | * the widget receiving the audio signal, whilst the source is the sender | |
1039 | * of the audio signal. | |
1040 | * | |
1041 | * Returns 0 for success else error. On error all resources can be freed | |
1042 | * with a call to snd_soc_card_free(). | |
1043 | */ | |
1044 | int snd_soc_dapm_add_routes(struct snd_soc_codec *codec, | |
1045 | const struct snd_soc_dapm_route *route, int num) | |
1046 | { | |
1047 | int i, ret; | |
1048 | ||
1049 | for (i = 0; i < num; i++) { | |
1050 | ret = snd_soc_dapm_add_route(codec, route->sink, | |
1051 | route->control, route->source); | |
1052 | if (ret < 0) { | |
1053 | printk(KERN_ERR "Failed to add route %s->%s\n", | |
1054 | route->source, | |
1055 | route->sink); | |
1056 | return ret; | |
1057 | } | |
1058 | route++; | |
1059 | } | |
1060 | ||
1061 | return 0; | |
1062 | } | |
1063 | EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes); | |
1064 | ||
2b97eabc RP |
1065 | /** |
1066 | * snd_soc_dapm_new_widgets - add new dapm widgets | |
1067 | * @codec: audio codec | |
1068 | * | |
1069 | * Checks the codec for any new dapm widgets and creates them if found. | |
1070 | * | |
1071 | * Returns 0 for success. | |
1072 | */ | |
1073 | int snd_soc_dapm_new_widgets(struct snd_soc_codec *codec) | |
1074 | { | |
1075 | struct snd_soc_dapm_widget *w; | |
1076 | ||
2b97eabc RP |
1077 | list_for_each_entry(w, &codec->dapm_widgets, list) |
1078 | { | |
1079 | if (w->new) | |
1080 | continue; | |
1081 | ||
1082 | switch(w->id) { | |
1083 | case snd_soc_dapm_switch: | |
1084 | case snd_soc_dapm_mixer: | |
1085 | dapm_new_mixer(codec, w); | |
1086 | break; | |
1087 | case snd_soc_dapm_mux: | |
1088 | dapm_new_mux(codec, w); | |
1089 | break; | |
1090 | case snd_soc_dapm_adc: | |
1091 | case snd_soc_dapm_dac: | |
1092 | case snd_soc_dapm_pga: | |
1093 | dapm_new_pga(codec, w); | |
1094 | break; | |
1095 | case snd_soc_dapm_input: | |
1096 | case snd_soc_dapm_output: | |
1097 | case snd_soc_dapm_micbias: | |
1098 | case snd_soc_dapm_spk: | |
1099 | case snd_soc_dapm_hp: | |
1100 | case snd_soc_dapm_mic: | |
1101 | case snd_soc_dapm_line: | |
1102 | case snd_soc_dapm_vmid: | |
1103 | case snd_soc_dapm_pre: | |
1104 | case snd_soc_dapm_post: | |
1105 | break; | |
1106 | } | |
1107 | w->new = 1; | |
1108 | } | |
1109 | ||
1110 | dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP); | |
2b97eabc RP |
1111 | return 0; |
1112 | } | |
1113 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets); | |
1114 | ||
1115 | /** | |
1116 | * snd_soc_dapm_get_volsw - dapm mixer get callback | |
1117 | * @kcontrol: mixer control | |
1118 | * @uinfo: control element information | |
1119 | * | |
1120 | * Callback to get the value of a dapm mixer control. | |
1121 | * | |
1122 | * Returns 0 for success. | |
1123 | */ | |
1124 | int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol, | |
1125 | struct snd_ctl_elem_value *ucontrol) | |
1126 | { | |
1127 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
4eaa9819 JS |
1128 | struct soc_mixer_control *mc = |
1129 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
1130 | unsigned int reg = mc->reg; |
1131 | unsigned int shift = mc->shift; | |
1132 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1133 | int max = mc->max; |
815ecf8d JS |
1134 | unsigned int invert = mc->invert; |
1135 | unsigned int mask = (1 << fls(max)) - 1; | |
2b97eabc RP |
1136 | |
1137 | /* return the saved value if we are powered down */ | |
1138 | if (widget->id == snd_soc_dapm_pga && !widget->power) { | |
1139 | ucontrol->value.integer.value[0] = widget->saved_value; | |
1140 | return 0; | |
1141 | } | |
1142 | ||
1143 | ucontrol->value.integer.value[0] = | |
1144 | (snd_soc_read(widget->codec, reg) >> shift) & mask; | |
1145 | if (shift != rshift) | |
1146 | ucontrol->value.integer.value[1] = | |
1147 | (snd_soc_read(widget->codec, reg) >> rshift) & mask; | |
1148 | if (invert) { | |
1149 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1150 | max - ucontrol->value.integer.value[0]; |
2b97eabc RP |
1151 | if (shift != rshift) |
1152 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 1153 | max - ucontrol->value.integer.value[1]; |
2b97eabc RP |
1154 | } |
1155 | ||
1156 | return 0; | |
1157 | } | |
1158 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw); | |
1159 | ||
1160 | /** | |
1161 | * snd_soc_dapm_put_volsw - dapm mixer set callback | |
1162 | * @kcontrol: mixer control | |
1163 | * @uinfo: control element information | |
1164 | * | |
1165 | * Callback to set the value of a dapm mixer control. | |
1166 | * | |
1167 | * Returns 0 for success. | |
1168 | */ | |
1169 | int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, | |
1170 | struct snd_ctl_elem_value *ucontrol) | |
1171 | { | |
1172 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
4eaa9819 JS |
1173 | struct soc_mixer_control *mc = |
1174 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
1175 | unsigned int reg = mc->reg; |
1176 | unsigned int shift = mc->shift; | |
1177 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1178 | int max = mc->max; |
815ecf8d JS |
1179 | unsigned int mask = (1 << fls(max)) - 1; |
1180 | unsigned int invert = mc->invert; | |
2b97eabc RP |
1181 | unsigned short val, val2, val_mask; |
1182 | int ret; | |
1183 | ||
1184 | val = (ucontrol->value.integer.value[0] & mask); | |
1185 | ||
1186 | if (invert) | |
a7a4ac86 | 1187 | val = max - val; |
2b97eabc RP |
1188 | val_mask = mask << shift; |
1189 | val = val << shift; | |
1190 | if (shift != rshift) { | |
1191 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1192 | if (invert) | |
a7a4ac86 | 1193 | val2 = max - val2; |
2b97eabc RP |
1194 | val_mask |= mask << rshift; |
1195 | val |= val2 << rshift; | |
1196 | } | |
1197 | ||
1198 | mutex_lock(&widget->codec->mutex); | |
1199 | widget->value = val; | |
1200 | ||
1201 | /* save volume value if the widget is powered down */ | |
1202 | if (widget->id == snd_soc_dapm_pga && !widget->power) { | |
1203 | widget->saved_value = val; | |
1204 | mutex_unlock(&widget->codec->mutex); | |
1205 | return 1; | |
1206 | } | |
1207 | ||
1208 | dapm_mixer_update_power(widget, kcontrol, reg, val_mask, val, invert); | |
1209 | if (widget->event) { | |
1210 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
9af6d956 LG |
1211 | ret = widget->event(widget, kcontrol, |
1212 | SND_SOC_DAPM_PRE_REG); | |
1213 | if (ret < 0) { | |
1214 | ret = 1; | |
2b97eabc | 1215 | goto out; |
9af6d956 | 1216 | } |
2b97eabc RP |
1217 | } |
1218 | ret = snd_soc_update_bits(widget->codec, reg, val_mask, val); | |
1219 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
9af6d956 LG |
1220 | ret = widget->event(widget, kcontrol, |
1221 | SND_SOC_DAPM_POST_REG); | |
2b97eabc RP |
1222 | } else |
1223 | ret = snd_soc_update_bits(widget->codec, reg, val_mask, val); | |
1224 | ||
1225 | out: | |
1226 | mutex_unlock(&widget->codec->mutex); | |
1227 | return ret; | |
1228 | } | |
1229 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw); | |
1230 | ||
1231 | /** | |
1232 | * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback | |
1233 | * @kcontrol: mixer control | |
1234 | * @uinfo: control element information | |
1235 | * | |
1236 | * Callback to get the value of a dapm enumerated double mixer control. | |
1237 | * | |
1238 | * Returns 0 for success. | |
1239 | */ | |
1240 | int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol, | |
1241 | struct snd_ctl_elem_value *ucontrol) | |
1242 | { | |
1243 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1244 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1245 | unsigned short val, bitmask; | |
1246 | ||
f8ba0b7b | 1247 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
1248 | ; |
1249 | val = snd_soc_read(widget->codec, e->reg); | |
1250 | ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1); | |
1251 | if (e->shift_l != e->shift_r) | |
1252 | ucontrol->value.enumerated.item[1] = | |
1253 | (val >> e->shift_r) & (bitmask - 1); | |
1254 | ||
1255 | return 0; | |
1256 | } | |
1257 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double); | |
1258 | ||
1259 | /** | |
1260 | * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback | |
1261 | * @kcontrol: mixer control | |
1262 | * @uinfo: control element information | |
1263 | * | |
1264 | * Callback to set the value of a dapm enumerated double mixer control. | |
1265 | * | |
1266 | * Returns 0 for success. | |
1267 | */ | |
1268 | int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, | |
1269 | struct snd_ctl_elem_value *ucontrol) | |
1270 | { | |
1271 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1272 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1273 | unsigned short val, mux; | |
1274 | unsigned short mask, bitmask; | |
1275 | int ret = 0; | |
1276 | ||
f8ba0b7b | 1277 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc | 1278 | ; |
f8ba0b7b | 1279 | if (ucontrol->value.enumerated.item[0] > e->max - 1) |
2b97eabc RP |
1280 | return -EINVAL; |
1281 | mux = ucontrol->value.enumerated.item[0]; | |
1282 | val = mux << e->shift_l; | |
1283 | mask = (bitmask - 1) << e->shift_l; | |
1284 | if (e->shift_l != e->shift_r) { | |
f8ba0b7b | 1285 | if (ucontrol->value.enumerated.item[1] > e->max - 1) |
2b97eabc RP |
1286 | return -EINVAL; |
1287 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
1288 | mask |= (bitmask - 1) << e->shift_r; | |
1289 | } | |
1290 | ||
1291 | mutex_lock(&widget->codec->mutex); | |
1292 | widget->value = val; | |
cb01e2b9 | 1293 | dapm_mux_update_power(widget, kcontrol, mask, mux, val, e); |
2b97eabc RP |
1294 | if (widget->event) { |
1295 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
9af6d956 LG |
1296 | ret = widget->event(widget, |
1297 | kcontrol, SND_SOC_DAPM_PRE_REG); | |
2b97eabc RP |
1298 | if (ret < 0) |
1299 | goto out; | |
1300 | } | |
1301 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1302 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
9af6d956 LG |
1303 | ret = widget->event(widget, |
1304 | kcontrol, SND_SOC_DAPM_POST_REG); | |
2b97eabc RP |
1305 | } else |
1306 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1307 | ||
1308 | out: | |
1309 | mutex_unlock(&widget->codec->mutex); | |
1310 | return ret; | |
1311 | } | |
1312 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double); | |
1313 | ||
1314 | /** | |
1315 | * snd_soc_dapm_new_control - create new dapm control | |
1316 | * @codec: audio codec | |
1317 | * @widget: widget template | |
1318 | * | |
1319 | * Creates a new dapm control based upon the template. | |
1320 | * | |
1321 | * Returns 0 for success else error. | |
1322 | */ | |
1323 | int snd_soc_dapm_new_control(struct snd_soc_codec *codec, | |
1324 | const struct snd_soc_dapm_widget *widget) | |
1325 | { | |
1326 | struct snd_soc_dapm_widget *w; | |
1327 | ||
1328 | if ((w = dapm_cnew_widget(widget)) == NULL) | |
1329 | return -ENOMEM; | |
1330 | ||
1331 | w->codec = codec; | |
1332 | INIT_LIST_HEAD(&w->sources); | |
1333 | INIT_LIST_HEAD(&w->sinks); | |
1334 | INIT_LIST_HEAD(&w->list); | |
1335 | list_add(&w->list, &codec->dapm_widgets); | |
1336 | ||
1337 | /* machine layer set ups unconnected pins and insertions */ | |
1338 | w->connected = 1; | |
1339 | return 0; | |
1340 | } | |
1341 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control); | |
1342 | ||
4ba1327a MB |
1343 | /** |
1344 | * snd_soc_dapm_new_controls - create new dapm controls | |
1345 | * @codec: audio codec | |
1346 | * @widget: widget array | |
1347 | * @num: number of widgets | |
1348 | * | |
1349 | * Creates new DAPM controls based upon the templates. | |
1350 | * | |
1351 | * Returns 0 for success else error. | |
1352 | */ | |
1353 | int snd_soc_dapm_new_controls(struct snd_soc_codec *codec, | |
1354 | const struct snd_soc_dapm_widget *widget, | |
1355 | int num) | |
1356 | { | |
1357 | int i, ret; | |
1358 | ||
1359 | for (i = 0; i < num; i++) { | |
1360 | ret = snd_soc_dapm_new_control(codec, widget); | |
1361 | if (ret < 0) | |
1362 | return ret; | |
1363 | widget++; | |
1364 | } | |
1365 | return 0; | |
1366 | } | |
1367 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls); | |
1368 | ||
1369 | ||
2b97eabc RP |
1370 | /** |
1371 | * snd_soc_dapm_stream_event - send a stream event to the dapm core | |
1372 | * @codec: audio codec | |
1373 | * @stream: stream name | |
1374 | * @event: stream event | |
1375 | * | |
1376 | * Sends a stream event to the dapm core. The core then makes any | |
1377 | * necessary widget power changes. | |
1378 | * | |
1379 | * Returns 0 for success else error. | |
1380 | */ | |
1381 | int snd_soc_dapm_stream_event(struct snd_soc_codec *codec, | |
1382 | char *stream, int event) | |
1383 | { | |
1384 | struct snd_soc_dapm_widget *w; | |
1385 | ||
11da21a7 SF |
1386 | if (stream == NULL) |
1387 | return 0; | |
1388 | ||
2b97eabc RP |
1389 | mutex_lock(&codec->mutex); |
1390 | list_for_each_entry(w, &codec->dapm_widgets, list) | |
1391 | { | |
1392 | if (!w->sname) | |
1393 | continue; | |
c1286b86 MB |
1394 | pr_debug("widget %s\n %s stream %s event %d\n", |
1395 | w->name, w->sname, stream, event); | |
2b97eabc RP |
1396 | if (strstr(w->sname, stream)) { |
1397 | switch(event) { | |
1398 | case SND_SOC_DAPM_STREAM_START: | |
1399 | w->active = 1; | |
1400 | break; | |
1401 | case SND_SOC_DAPM_STREAM_STOP: | |
1402 | w->active = 0; | |
1403 | break; | |
1404 | case SND_SOC_DAPM_STREAM_SUSPEND: | |
1405 | if (w->active) | |
1406 | w->suspend = 1; | |
1407 | w->active = 0; | |
1408 | break; | |
1409 | case SND_SOC_DAPM_STREAM_RESUME: | |
1410 | if (w->suspend) { | |
1411 | w->active = 1; | |
1412 | w->suspend = 0; | |
1413 | } | |
1414 | break; | |
1415 | case SND_SOC_DAPM_STREAM_PAUSE_PUSH: | |
1416 | break; | |
1417 | case SND_SOC_DAPM_STREAM_PAUSE_RELEASE: | |
1418 | break; | |
1419 | } | |
1420 | } | |
1421 | } | |
1422 | mutex_unlock(&codec->mutex); | |
1423 | ||
1424 | dapm_power_widgets(codec, event); | |
9bf8e7dd | 1425 | dump_dapm(codec, __func__); |
2b97eabc RP |
1426 | return 0; |
1427 | } | |
1428 | EXPORT_SYMBOL_GPL(snd_soc_dapm_stream_event); | |
1429 | ||
0b4d221b | 1430 | /** |
0be9898a | 1431 | * snd_soc_dapm_set_bias_level - set the bias level for the system |
0b4d221b | 1432 | * @socdev: audio device |
0be9898a | 1433 | * @level: level to configure |
0b4d221b | 1434 | * |
0be9898a | 1435 | * Configure the bias (power) levels for the SoC audio device. |
0b4d221b LG |
1436 | * |
1437 | * Returns 0 for success else error. | |
1438 | */ | |
0be9898a MB |
1439 | int snd_soc_dapm_set_bias_level(struct snd_soc_device *socdev, |
1440 | enum snd_soc_bias_level level) | |
0b4d221b LG |
1441 | { |
1442 | struct snd_soc_codec *codec = socdev->codec; | |
1443 | struct snd_soc_machine *machine = socdev->machine; | |
0be9898a | 1444 | int ret = 0; |
0b4d221b | 1445 | |
0be9898a MB |
1446 | if (machine->set_bias_level) |
1447 | ret = machine->set_bias_level(machine, level); | |
1448 | if (ret == 0 && codec->set_bias_level) | |
1449 | ret = codec->set_bias_level(codec, level); | |
1450 | ||
1451 | return ret; | |
0b4d221b | 1452 | } |
0b4d221b | 1453 | |
2b97eabc | 1454 | /** |
a5302181 LG |
1455 | * snd_soc_dapm_enable_pin - enable pin. |
1456 | * @snd_soc_codec: SoC codec | |
1457 | * @pin: pin name | |
2b97eabc | 1458 | * |
a5302181 LG |
1459 | * Enables input/output pin and it's parents or children widgets iff there is |
1460 | * a valid audio route and active audio stream. | |
1461 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
1462 | * do any widget power switching. | |
2b97eabc | 1463 | */ |
a5302181 | 1464 | int snd_soc_dapm_enable_pin(struct snd_soc_codec *codec, char *pin) |
2b97eabc | 1465 | { |
a5302181 LG |
1466 | return snd_soc_dapm_set_pin(codec, pin, 1); |
1467 | } | |
1468 | EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin); | |
2b97eabc | 1469 | |
a5302181 LG |
1470 | /** |
1471 | * snd_soc_dapm_disable_pin - disable pin. | |
1472 | * @codec: SoC codec | |
1473 | * @pin: pin name | |
1474 | * | |
1475 | * Disables input/output pin and it's parents or children widgets. | |
1476 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
1477 | * do any widget power switching. | |
1478 | */ | |
1479 | int snd_soc_dapm_disable_pin(struct snd_soc_codec *codec, char *pin) | |
1480 | { | |
1481 | return snd_soc_dapm_set_pin(codec, pin, 0); | |
2b97eabc | 1482 | } |
a5302181 | 1483 | EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin); |
2b97eabc | 1484 | |
5817b52a MB |
1485 | /** |
1486 | * snd_soc_dapm_nc_pin - permanently disable pin. | |
1487 | * @codec: SoC codec | |
1488 | * @pin: pin name | |
1489 | * | |
1490 | * Marks the specified pin as being not connected, disabling it along | |
1491 | * any parent or child widgets. At present this is identical to | |
1492 | * snd_soc_dapm_disable_pin() but in future it will be extended to do | |
1493 | * additional things such as disabling controls which only affect | |
1494 | * paths through the pin. | |
1495 | * | |
1496 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
1497 | * do any widget power switching. | |
1498 | */ | |
1499 | int snd_soc_dapm_nc_pin(struct snd_soc_codec *codec, char *pin) | |
1500 | { | |
1501 | return snd_soc_dapm_set_pin(codec, pin, 0); | |
1502 | } | |
1503 | EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin); | |
1504 | ||
eeec12bf | 1505 | /** |
a5302181 | 1506 | * snd_soc_dapm_get_pin_status - get audio pin status |
eeec12bf | 1507 | * @codec: audio codec |
a5302181 | 1508 | * @pin: audio signal pin endpoint (or start point) |
eeec12bf | 1509 | * |
a5302181 | 1510 | * Get audio pin status - connected or disconnected. |
eeec12bf | 1511 | * |
a5302181 | 1512 | * Returns 1 for connected otherwise 0. |
eeec12bf | 1513 | */ |
a5302181 | 1514 | int snd_soc_dapm_get_pin_status(struct snd_soc_codec *codec, char *pin) |
eeec12bf GG |
1515 | { |
1516 | struct snd_soc_dapm_widget *w; | |
1517 | ||
1518 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
a5302181 | 1519 | if (!strcmp(w->name, pin)) |
eeec12bf GG |
1520 | return w->connected; |
1521 | } | |
1522 | ||
1523 | return 0; | |
1524 | } | |
a5302181 | 1525 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status); |
eeec12bf | 1526 | |
2b97eabc RP |
1527 | /** |
1528 | * snd_soc_dapm_free - free dapm resources | |
1529 | * @socdev: SoC device | |
1530 | * | |
1531 | * Free all dapm widgets and resources. | |
1532 | */ | |
1533 | void snd_soc_dapm_free(struct snd_soc_device *socdev) | |
1534 | { | |
1535 | struct snd_soc_codec *codec = socdev->codec; | |
1536 | ||
1537 | snd_soc_dapm_sys_remove(socdev->dev); | |
1538 | dapm_free_widgets(codec); | |
1539 | } | |
1540 | EXPORT_SYMBOL_GPL(snd_soc_dapm_free); | |
1541 | ||
1542 | /* Module information */ | |
d331124d | 1543 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
2b97eabc RP |
1544 | MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC"); |
1545 | MODULE_LICENSE("GPL"); |