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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[] = { | |
246d0a17 MB |
55 | snd_soc_dapm_pre, snd_soc_dapm_supply, snd_soc_dapm_micbias, |
56 | snd_soc_dapm_mic, snd_soc_dapm_mux, snd_soc_dapm_value_mux, | |
57 | snd_soc_dapm_dac, snd_soc_dapm_mixer, snd_soc_dapm_mixer_named_ctl, | |
58 | snd_soc_dapm_pga, snd_soc_dapm_adc, snd_soc_dapm_hp, snd_soc_dapm_spk, | |
59 | snd_soc_dapm_post | |
2b97eabc | 60 | }; |
ca9c1aae | 61 | |
2b97eabc RP |
62 | static int dapm_down_seq[] = { |
63 | snd_soc_dapm_pre, snd_soc_dapm_adc, snd_soc_dapm_hp, snd_soc_dapm_spk, | |
ca9c1aae IM |
64 | snd_soc_dapm_pga, snd_soc_dapm_mixer_named_ctl, snd_soc_dapm_mixer, |
65 | snd_soc_dapm_dac, snd_soc_dapm_mic, snd_soc_dapm_micbias, | |
246d0a17 MB |
66 | snd_soc_dapm_mux, snd_soc_dapm_value_mux, snd_soc_dapm_supply, |
67 | snd_soc_dapm_post | |
2b97eabc RP |
68 | }; |
69 | ||
70 | static int dapm_status = 1; | |
71 | module_param(dapm_status, int, 0); | |
72 | MODULE_PARM_DESC(dapm_status, "enable DPM sysfs entries"); | |
73 | ||
12ef193d | 74 | static void pop_wait(u32 pop_time) |
15e4c72f MB |
75 | { |
76 | if (pop_time) | |
77 | schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time)); | |
78 | } | |
79 | ||
12ef193d | 80 | static void pop_dbg(u32 pop_time, const char *fmt, ...) |
15e4c72f MB |
81 | { |
82 | va_list args; | |
83 | ||
84 | va_start(args, fmt); | |
85 | ||
86 | if (pop_time) { | |
87 | vprintk(fmt, args); | |
12ef193d | 88 | pop_wait(pop_time); |
15e4c72f MB |
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: | |
ca9c1aae IM |
107 | case snd_soc_dapm_mixer: |
108 | case snd_soc_dapm_mixer_named_ctl: { | |
2b97eabc | 109 | int val; |
4eaa9819 JS |
110 | struct soc_mixer_control *mc = (struct soc_mixer_control *) |
111 | w->kcontrols[i].private_value; | |
815ecf8d JS |
112 | unsigned int reg = mc->reg; |
113 | unsigned int shift = mc->shift; | |
4eaa9819 | 114 | int max = mc->max; |
815ecf8d JS |
115 | unsigned int mask = (1 << fls(max)) - 1; |
116 | unsigned int invert = mc->invert; | |
2b97eabc RP |
117 | |
118 | val = snd_soc_read(w->codec, reg); | |
119 | val = (val >> shift) & mask; | |
120 | ||
121 | if ((invert && !val) || (!invert && val)) | |
122 | p->connect = 1; | |
123 | else | |
124 | p->connect = 0; | |
125 | } | |
126 | break; | |
127 | case snd_soc_dapm_mux: { | |
128 | struct soc_enum *e = (struct soc_enum *)w->kcontrols[i].private_value; | |
129 | int val, item, bitmask; | |
130 | ||
f8ba0b7b | 131 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
132 | ; |
133 | val = snd_soc_read(w->codec, e->reg); | |
134 | item = (val >> e->shift_l) & (bitmask - 1); | |
135 | ||
136 | p->connect = 0; | |
f8ba0b7b | 137 | for (i = 0; i < e->max; i++) { |
2b97eabc RP |
138 | if (!(strcmp(p->name, e->texts[i])) && item == i) |
139 | p->connect = 1; | |
140 | } | |
141 | } | |
142 | break; | |
2e72f8e3 | 143 | case snd_soc_dapm_value_mux: { |
74155556 | 144 | struct soc_enum *e = (struct soc_enum *) |
2e72f8e3 PU |
145 | w->kcontrols[i].private_value; |
146 | int val, item; | |
147 | ||
148 | val = snd_soc_read(w->codec, e->reg); | |
149 | val = (val >> e->shift_l) & e->mask; | |
150 | for (item = 0; item < e->max; item++) { | |
151 | if (val == e->values[item]) | |
152 | break; | |
153 | } | |
154 | ||
155 | p->connect = 0; | |
156 | for (i = 0; i < e->max; i++) { | |
157 | if (!(strcmp(p->name, e->texts[i])) && item == i) | |
158 | p->connect = 1; | |
159 | } | |
160 | } | |
161 | break; | |
2b97eabc RP |
162 | /* does not effect routing - always connected */ |
163 | case snd_soc_dapm_pga: | |
164 | case snd_soc_dapm_output: | |
165 | case snd_soc_dapm_adc: | |
166 | case snd_soc_dapm_input: | |
167 | case snd_soc_dapm_dac: | |
168 | case snd_soc_dapm_micbias: | |
169 | case snd_soc_dapm_vmid: | |
246d0a17 | 170 | case snd_soc_dapm_supply: |
2b97eabc RP |
171 | p->connect = 1; |
172 | break; | |
173 | /* does effect routing - dynamically connected */ | |
174 | case snd_soc_dapm_hp: | |
175 | case snd_soc_dapm_mic: | |
176 | case snd_soc_dapm_spk: | |
177 | case snd_soc_dapm_line: | |
178 | case snd_soc_dapm_pre: | |
179 | case snd_soc_dapm_post: | |
180 | p->connect = 0; | |
181 | break; | |
182 | } | |
183 | } | |
184 | ||
185 | /* connect mux widget to it's interconnecting audio paths */ | |
186 | static int dapm_connect_mux(struct snd_soc_codec *codec, | |
187 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, | |
188 | struct snd_soc_dapm_path *path, const char *control_name, | |
189 | const struct snd_kcontrol_new *kcontrol) | |
190 | { | |
191 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
192 | int i; | |
193 | ||
f8ba0b7b | 194 | for (i = 0; i < e->max; i++) { |
2b97eabc RP |
195 | if (!(strcmp(control_name, e->texts[i]))) { |
196 | list_add(&path->list, &codec->dapm_paths); | |
197 | list_add(&path->list_sink, &dest->sources); | |
198 | list_add(&path->list_source, &src->sinks); | |
199 | path->name = (char*)e->texts[i]; | |
200 | dapm_set_path_status(dest, path, 0); | |
201 | return 0; | |
202 | } | |
203 | } | |
204 | ||
205 | return -ENODEV; | |
206 | } | |
207 | ||
208 | /* connect mixer widget to it's interconnecting audio paths */ | |
209 | static int dapm_connect_mixer(struct snd_soc_codec *codec, | |
210 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, | |
211 | struct snd_soc_dapm_path *path, const char *control_name) | |
212 | { | |
213 | int i; | |
214 | ||
215 | /* search for mixer kcontrol */ | |
216 | for (i = 0; i < dest->num_kcontrols; i++) { | |
217 | if (!strcmp(control_name, dest->kcontrols[i].name)) { | |
218 | list_add(&path->list, &codec->dapm_paths); | |
219 | list_add(&path->list_sink, &dest->sources); | |
220 | list_add(&path->list_source, &src->sinks); | |
221 | path->name = dest->kcontrols[i].name; | |
222 | dapm_set_path_status(dest, path, i); | |
223 | return 0; | |
224 | } | |
225 | } | |
226 | return -ENODEV; | |
227 | } | |
228 | ||
229 | /* update dapm codec register bits */ | |
230 | static int dapm_update_bits(struct snd_soc_dapm_widget *widget) | |
231 | { | |
232 | int change, power; | |
233 | unsigned short old, new; | |
234 | struct snd_soc_codec *codec = widget->codec; | |
235 | ||
236 | /* check for valid widgets */ | |
237 | if (widget->reg < 0 || widget->id == snd_soc_dapm_input || | |
238 | widget->id == snd_soc_dapm_output || | |
239 | widget->id == snd_soc_dapm_hp || | |
240 | widget->id == snd_soc_dapm_mic || | |
241 | widget->id == snd_soc_dapm_line || | |
242 | widget->id == snd_soc_dapm_spk) | |
243 | return 0; | |
244 | ||
245 | power = widget->power; | |
246 | if (widget->invert) | |
247 | power = (power ? 0:1); | |
248 | ||
249 | old = snd_soc_read(codec, widget->reg); | |
250 | new = (old & ~(0x1 << widget->shift)) | (power << widget->shift); | |
251 | ||
252 | change = old != new; | |
253 | if (change) { | |
12ef193d TK |
254 | pop_dbg(codec->pop_time, "pop test %s : %s in %d ms\n", |
255 | widget->name, widget->power ? "on" : "off", | |
256 | codec->pop_time); | |
2b97eabc | 257 | snd_soc_write(codec, widget->reg, new); |
12ef193d | 258 | pop_wait(codec->pop_time); |
2b97eabc | 259 | } |
c1286b86 MB |
260 | pr_debug("reg %x old %x new %x change %d\n", widget->reg, |
261 | old, new, change); | |
2b97eabc RP |
262 | return change; |
263 | } | |
264 | ||
265 | /* ramps the volume up or down to minimise pops before or after a | |
266 | * DAPM power event */ | |
267 | static int dapm_set_pga(struct snd_soc_dapm_widget *widget, int power) | |
268 | { | |
269 | const struct snd_kcontrol_new *k = widget->kcontrols; | |
270 | ||
271 | if (widget->muted && !power) | |
272 | return 0; | |
273 | if (!widget->muted && power) | |
274 | return 0; | |
275 | ||
276 | if (widget->num_kcontrols && k) { | |
4eaa9819 JS |
277 | struct soc_mixer_control *mc = |
278 | (struct soc_mixer_control *)k->private_value; | |
815ecf8d JS |
279 | unsigned int reg = mc->reg; |
280 | unsigned int shift = mc->shift; | |
4eaa9819 | 281 | int max = mc->max; |
815ecf8d JS |
282 | unsigned int mask = (1 << fls(max)) - 1; |
283 | unsigned int invert = mc->invert; | |
2b97eabc RP |
284 | |
285 | if (power) { | |
286 | int i; | |
287 | /* power up has happended, increase volume to last level */ | |
288 | if (invert) { | |
4eaa9819 | 289 | for (i = max; i > widget->saved_value; i--) |
2b97eabc RP |
290 | snd_soc_update_bits(widget->codec, reg, mask, i); |
291 | } else { | |
292 | for (i = 0; i < widget->saved_value; i++) | |
293 | snd_soc_update_bits(widget->codec, reg, mask, i); | |
294 | } | |
295 | widget->muted = 0; | |
296 | } else { | |
297 | /* power down is about to occur, decrease volume to mute */ | |
298 | int val = snd_soc_read(widget->codec, reg); | |
299 | int i = widget->saved_value = (val >> shift) & mask; | |
300 | if (invert) { | |
301 | for (; i < mask; i++) | |
302 | snd_soc_update_bits(widget->codec, reg, mask, i); | |
303 | } else { | |
304 | for (; i > 0; i--) | |
305 | snd_soc_update_bits(widget->codec, reg, mask, i); | |
306 | } | |
307 | widget->muted = 1; | |
308 | } | |
309 | } | |
310 | return 0; | |
311 | } | |
312 | ||
313 | /* create new dapm mixer control */ | |
314 | static int dapm_new_mixer(struct snd_soc_codec *codec, | |
315 | struct snd_soc_dapm_widget *w) | |
316 | { | |
317 | int i, ret = 0; | |
219b93f5 | 318 | size_t name_len; |
2b97eabc RP |
319 | struct snd_soc_dapm_path *path; |
320 | ||
321 | /* add kcontrol */ | |
322 | for (i = 0; i < w->num_kcontrols; i++) { | |
323 | ||
324 | /* match name */ | |
325 | list_for_each_entry(path, &w->sources, list_sink) { | |
326 | ||
327 | /* mixer/mux paths name must match control name */ | |
328 | if (path->name != (char*)w->kcontrols[i].name) | |
329 | continue; | |
330 | ||
ca9c1aae IM |
331 | /* add dapm control with long name. |
332 | * for dapm_mixer this is the concatenation of the | |
333 | * mixer and kcontrol name. | |
334 | * for dapm_mixer_named_ctl this is simply the | |
335 | * kcontrol name. | |
336 | */ | |
337 | name_len = strlen(w->kcontrols[i].name) + 1; | |
07495f3e | 338 | if (w->id != snd_soc_dapm_mixer_named_ctl) |
ca9c1aae IM |
339 | name_len += 1 + strlen(w->name); |
340 | ||
219b93f5 | 341 | path->long_name = kmalloc(name_len, GFP_KERNEL); |
ca9c1aae | 342 | |
2b97eabc RP |
343 | if (path->long_name == NULL) |
344 | return -ENOMEM; | |
345 | ||
ca9c1aae | 346 | switch (w->id) { |
ca9c1aae IM |
347 | default: |
348 | snprintf(path->long_name, name_len, "%s %s", | |
349 | w->name, w->kcontrols[i].name); | |
07495f3e | 350 | break; |
ca9c1aae IM |
351 | case snd_soc_dapm_mixer_named_ctl: |
352 | snprintf(path->long_name, name_len, "%s", | |
353 | w->kcontrols[i].name); | |
07495f3e | 354 | break; |
ca9c1aae IM |
355 | } |
356 | ||
219b93f5 MB |
357 | path->long_name[name_len - 1] = '\0'; |
358 | ||
2b97eabc RP |
359 | path->kcontrol = snd_soc_cnew(&w->kcontrols[i], w, |
360 | path->long_name); | |
361 | ret = snd_ctl_add(codec->card, path->kcontrol); | |
362 | if (ret < 0) { | |
6553e192 MB |
363 | printk(KERN_ERR "asoc: failed to add dapm kcontrol %s: %d\n", |
364 | path->long_name, | |
365 | ret); | |
2b97eabc RP |
366 | kfree(path->long_name); |
367 | path->long_name = NULL; | |
368 | return ret; | |
369 | } | |
370 | } | |
371 | } | |
372 | return ret; | |
373 | } | |
374 | ||
375 | /* create new dapm mux control */ | |
376 | static int dapm_new_mux(struct snd_soc_codec *codec, | |
377 | struct snd_soc_dapm_widget *w) | |
378 | { | |
379 | struct snd_soc_dapm_path *path = NULL; | |
380 | struct snd_kcontrol *kcontrol; | |
381 | int ret = 0; | |
382 | ||
383 | if (!w->num_kcontrols) { | |
384 | printk(KERN_ERR "asoc: mux %s has no controls\n", w->name); | |
385 | return -EINVAL; | |
386 | } | |
387 | ||
388 | kcontrol = snd_soc_cnew(&w->kcontrols[0], w, w->name); | |
389 | ret = snd_ctl_add(codec->card, kcontrol); | |
390 | if (ret < 0) | |
391 | goto err; | |
392 | ||
393 | list_for_each_entry(path, &w->sources, list_sink) | |
394 | path->kcontrol = kcontrol; | |
395 | ||
396 | return ret; | |
397 | ||
398 | err: | |
399 | printk(KERN_ERR "asoc: failed to add kcontrol %s\n", w->name); | |
400 | return ret; | |
401 | } | |
402 | ||
403 | /* create new dapm volume control */ | |
404 | static int dapm_new_pga(struct snd_soc_codec *codec, | |
405 | struct snd_soc_dapm_widget *w) | |
406 | { | |
407 | struct snd_kcontrol *kcontrol; | |
408 | int ret = 0; | |
409 | ||
410 | if (!w->num_kcontrols) | |
411 | return -EINVAL; | |
412 | ||
413 | kcontrol = snd_soc_cnew(&w->kcontrols[0], w, w->name); | |
414 | ret = snd_ctl_add(codec->card, kcontrol); | |
415 | if (ret < 0) { | |
416 | printk(KERN_ERR "asoc: failed to add kcontrol %s\n", w->name); | |
417 | return ret; | |
418 | } | |
419 | ||
420 | return ret; | |
421 | } | |
422 | ||
423 | /* reset 'walked' bit for each dapm path */ | |
424 | static inline void dapm_clear_walk(struct snd_soc_codec *codec) | |
425 | { | |
426 | struct snd_soc_dapm_path *p; | |
427 | ||
428 | list_for_each_entry(p, &codec->dapm_paths, list) | |
429 | p->walked = 0; | |
430 | } | |
431 | ||
432 | /* | |
433 | * Recursively check for a completed path to an active or physically connected | |
434 | * output widget. Returns number of complete paths. | |
435 | */ | |
436 | static int is_connected_output_ep(struct snd_soc_dapm_widget *widget) | |
437 | { | |
438 | struct snd_soc_dapm_path *path; | |
439 | int con = 0; | |
440 | ||
246d0a17 MB |
441 | if (widget->id == snd_soc_dapm_supply) |
442 | return 0; | |
443 | ||
2b97eabc RP |
444 | if (widget->id == snd_soc_dapm_adc && widget->active) |
445 | return 1; | |
446 | ||
447 | if (widget->connected) { | |
448 | /* connected pin ? */ | |
449 | if (widget->id == snd_soc_dapm_output && !widget->ext) | |
450 | return 1; | |
451 | ||
452 | /* connected jack or spk ? */ | |
453 | if (widget->id == snd_soc_dapm_hp || widget->id == snd_soc_dapm_spk || | |
454 | widget->id == snd_soc_dapm_line) | |
455 | return 1; | |
456 | } | |
457 | ||
458 | list_for_each_entry(path, &widget->sinks, list_source) { | |
459 | if (path->walked) | |
460 | continue; | |
461 | ||
462 | if (path->sink && path->connect) { | |
463 | path->walked = 1; | |
464 | con += is_connected_output_ep(path->sink); | |
465 | } | |
466 | } | |
467 | ||
468 | return con; | |
469 | } | |
470 | ||
471 | /* | |
472 | * Recursively check for a completed path to an active or physically connected | |
473 | * input widget. Returns number of complete paths. | |
474 | */ | |
475 | static int is_connected_input_ep(struct snd_soc_dapm_widget *widget) | |
476 | { | |
477 | struct snd_soc_dapm_path *path; | |
478 | int con = 0; | |
479 | ||
246d0a17 MB |
480 | if (widget->id == snd_soc_dapm_supply) |
481 | return 0; | |
482 | ||
2b97eabc RP |
483 | /* active stream ? */ |
484 | if (widget->id == snd_soc_dapm_dac && widget->active) | |
485 | return 1; | |
486 | ||
487 | if (widget->connected) { | |
488 | /* connected pin ? */ | |
489 | if (widget->id == snd_soc_dapm_input && !widget->ext) | |
490 | return 1; | |
491 | ||
492 | /* connected VMID/Bias for lower pops */ | |
493 | if (widget->id == snd_soc_dapm_vmid) | |
494 | return 1; | |
495 | ||
496 | /* connected jack ? */ | |
497 | if (widget->id == snd_soc_dapm_mic || widget->id == snd_soc_dapm_line) | |
498 | return 1; | |
499 | } | |
500 | ||
501 | list_for_each_entry(path, &widget->sources, list_sink) { | |
502 | if (path->walked) | |
503 | continue; | |
504 | ||
505 | if (path->source && path->connect) { | |
506 | path->walked = 1; | |
507 | con += is_connected_input_ep(path->source); | |
508 | } | |
509 | } | |
510 | ||
511 | return con; | |
512 | } | |
513 | ||
e2be2ccf JN |
514 | /* |
515 | * Handler for generic register modifier widget. | |
516 | */ | |
517 | int dapm_reg_event(struct snd_soc_dapm_widget *w, | |
518 | struct snd_kcontrol *kcontrol, int event) | |
519 | { | |
520 | unsigned int val; | |
521 | ||
522 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
523 | val = w->on_val; | |
524 | else | |
525 | val = w->off_val; | |
526 | ||
527 | snd_soc_update_bits(w->codec, -(w->reg + 1), | |
528 | w->mask << w->shift, val << w->shift); | |
529 | ||
530 | return 0; | |
531 | } | |
11589418 | 532 | EXPORT_SYMBOL_GPL(dapm_reg_event); |
e2be2ccf | 533 | |
025756ec MB |
534 | /* Standard power change method, used to apply power changes to most |
535 | * widgets. | |
536 | */ | |
537 | static int dapm_generic_apply_power(struct snd_soc_dapm_widget *w) | |
538 | { | |
539 | int ret; | |
540 | ||
541 | /* call any power change event handlers */ | |
542 | if (w->event) | |
543 | pr_debug("power %s event for %s flags %x\n", | |
544 | w->power ? "on" : "off", | |
545 | w->name, w->event_flags); | |
546 | ||
547 | /* power up pre event */ | |
548 | if (w->power && w->event && | |
549 | (w->event_flags & SND_SOC_DAPM_PRE_PMU)) { | |
550 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMU); | |
551 | if (ret < 0) | |
552 | return ret; | |
553 | } | |
554 | ||
555 | /* power down pre event */ | |
556 | if (!w->power && w->event && | |
557 | (w->event_flags & SND_SOC_DAPM_PRE_PMD)) { | |
558 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMD); | |
559 | if (ret < 0) | |
560 | return ret; | |
561 | } | |
562 | ||
563 | /* Lower PGA volume to reduce pops */ | |
564 | if (w->id == snd_soc_dapm_pga && !w->power) | |
565 | dapm_set_pga(w, w->power); | |
566 | ||
567 | dapm_update_bits(w); | |
568 | ||
569 | /* Raise PGA volume to reduce pops */ | |
570 | if (w->id == snd_soc_dapm_pga && w->power) | |
571 | dapm_set_pga(w, w->power); | |
572 | ||
573 | /* power up post event */ | |
574 | if (w->power && w->event && | |
575 | (w->event_flags & SND_SOC_DAPM_POST_PMU)) { | |
576 | ret = w->event(w, | |
577 | NULL, SND_SOC_DAPM_POST_PMU); | |
578 | if (ret < 0) | |
579 | return ret; | |
580 | } | |
581 | ||
582 | /* power down post event */ | |
583 | if (!w->power && w->event && | |
584 | (w->event_flags & SND_SOC_DAPM_POST_PMD)) { | |
585 | ret = w->event(w, NULL, SND_SOC_DAPM_POST_PMD); | |
586 | if (ret < 0) | |
587 | return ret; | |
588 | } | |
589 | ||
590 | return 0; | |
591 | } | |
592 | ||
cd0f2d47 MB |
593 | /* Generic check to see if a widget should be powered. |
594 | */ | |
595 | static int dapm_generic_check_power(struct snd_soc_dapm_widget *w) | |
596 | { | |
597 | int in, out; | |
598 | ||
599 | in = is_connected_input_ep(w); | |
600 | dapm_clear_walk(w->codec); | |
601 | out = is_connected_output_ep(w); | |
602 | dapm_clear_walk(w->codec); | |
603 | return out != 0 && in != 0; | |
604 | } | |
605 | ||
6ea31b9f MB |
606 | /* Check to see if an ADC has power */ |
607 | static int dapm_adc_check_power(struct snd_soc_dapm_widget *w) | |
608 | { | |
609 | int in; | |
610 | ||
611 | if (w->active) { | |
612 | in = is_connected_input_ep(w); | |
613 | dapm_clear_walk(w->codec); | |
614 | return in != 0; | |
615 | } else { | |
616 | return dapm_generic_check_power(w); | |
617 | } | |
618 | } | |
619 | ||
620 | /* Check to see if a DAC has power */ | |
621 | static int dapm_dac_check_power(struct snd_soc_dapm_widget *w) | |
622 | { | |
623 | int out; | |
624 | ||
625 | if (w->active) { | |
626 | out = is_connected_output_ep(w); | |
627 | dapm_clear_walk(w->codec); | |
628 | return out != 0; | |
629 | } else { | |
630 | return dapm_generic_check_power(w); | |
631 | } | |
632 | } | |
633 | ||
246d0a17 MB |
634 | /* Check to see if a power supply is needed */ |
635 | static int dapm_supply_check_power(struct snd_soc_dapm_widget *w) | |
636 | { | |
637 | struct snd_soc_dapm_path *path; | |
638 | int power = 0; | |
639 | ||
640 | /* Check if one of our outputs is connected */ | |
641 | list_for_each_entry(path, &w->sinks, list_source) { | |
642 | if (path->sink && path->sink->power_check && | |
643 | path->sink->power_check(path->sink)) { | |
644 | power = 1; | |
645 | break; | |
646 | } | |
647 | } | |
648 | ||
649 | dapm_clear_walk(w->codec); | |
650 | ||
651 | return power; | |
652 | } | |
653 | ||
42aa3418 MB |
654 | /* |
655 | * Scan a single DAPM widget for a complete audio path and update the | |
656 | * power status appropriately. | |
657 | */ | |
658 | static int dapm_power_widget(struct snd_soc_codec *codec, int event, | |
659 | struct snd_soc_dapm_widget *w) | |
660 | { | |
6ea31b9f | 661 | int power, ret; |
42aa3418 | 662 | |
6ea31b9f | 663 | switch (w->id) { |
6ea31b9f | 664 | case snd_soc_dapm_pre: |
42aa3418 MB |
665 | if (!w->event) |
666 | return 0; | |
667 | ||
668 | if (event == SND_SOC_DAPM_STREAM_START) { | |
669 | ret = w->event(w, | |
670 | NULL, SND_SOC_DAPM_PRE_PMU); | |
671 | if (ret < 0) | |
672 | return ret; | |
673 | } else if (event == SND_SOC_DAPM_STREAM_STOP) { | |
674 | ret = w->event(w, | |
675 | NULL, SND_SOC_DAPM_PRE_PMD); | |
676 | if (ret < 0) | |
677 | return ret; | |
678 | } | |
679 | return 0; | |
6ea31b9f MB |
680 | |
681 | case snd_soc_dapm_post: | |
42aa3418 MB |
682 | if (!w->event) |
683 | return 0; | |
684 | ||
685 | if (event == SND_SOC_DAPM_STREAM_START) { | |
686 | ret = w->event(w, | |
687 | NULL, SND_SOC_DAPM_POST_PMU); | |
688 | if (ret < 0) | |
689 | return ret; | |
690 | } else if (event == SND_SOC_DAPM_STREAM_STOP) { | |
691 | ret = w->event(w, | |
692 | NULL, SND_SOC_DAPM_POST_PMD); | |
693 | if (ret < 0) | |
694 | return ret; | |
695 | } | |
696 | return 0; | |
42aa3418 | 697 | |
6ea31b9f | 698 | default: |
6ea31b9f MB |
699 | break; |
700 | } | |
42aa3418 | 701 | |
b75576d7 MB |
702 | if (!w->power_check) |
703 | return 0; | |
704 | ||
705 | power = w->power_check(w); | |
6ea31b9f | 706 | if (w->power == power) |
42aa3418 | 707 | return 0; |
6ea31b9f | 708 | w->power = power; |
42aa3418 | 709 | |
025756ec | 710 | return dapm_generic_apply_power(w); |
42aa3418 MB |
711 | } |
712 | ||
2b97eabc RP |
713 | /* |
714 | * Scan each dapm widget for complete audio path. | |
715 | * A complete path is a route that has valid endpoints i.e.:- | |
716 | * | |
717 | * o DAC to output pin. | |
718 | * o Input Pin to ADC. | |
719 | * o Input pin to Output pin (bypass, sidetone) | |
720 | * o DAC to ADC (loopback). | |
721 | */ | |
d9c96cf3 | 722 | static int dapm_power_widgets(struct snd_soc_codec *codec, int event) |
2b97eabc RP |
723 | { |
724 | struct snd_soc_dapm_widget *w; | |
42aa3418 | 725 | int i, c = 1, *seq = NULL, ret = 0; |
2b97eabc RP |
726 | |
727 | /* do we have a sequenced stream event */ | |
728 | if (event == SND_SOC_DAPM_STREAM_START) { | |
729 | c = ARRAY_SIZE(dapm_up_seq); | |
730 | seq = dapm_up_seq; | |
731 | } else if (event == SND_SOC_DAPM_STREAM_STOP) { | |
732 | c = ARRAY_SIZE(dapm_down_seq); | |
733 | seq = dapm_down_seq; | |
734 | } | |
735 | ||
42aa3418 | 736 | for (i = 0; i < c; i++) { |
2b97eabc RP |
737 | list_for_each_entry(w, &codec->dapm_widgets, list) { |
738 | ||
739 | /* is widget in stream order */ | |
740 | if (seq && seq[i] && w->id != seq[i]) | |
741 | continue; | |
742 | ||
42aa3418 MB |
743 | ret = dapm_power_widget(codec, event, w); |
744 | if (ret != 0) | |
745 | return ret; | |
2b97eabc RP |
746 | } |
747 | } | |
748 | ||
42aa3418 | 749 | return 0; |
2b97eabc RP |
750 | } |
751 | ||
c1286b86 | 752 | #ifdef DEBUG |
2b97eabc RP |
753 | static void dbg_dump_dapm(struct snd_soc_codec* codec, const char *action) |
754 | { | |
755 | struct snd_soc_dapm_widget *w; | |
756 | struct snd_soc_dapm_path *p = NULL; | |
757 | int in, out; | |
758 | ||
759 | printk("DAPM %s %s\n", codec->name, action); | |
760 | ||
761 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
762 | ||
763 | /* only display widgets that effect routing */ | |
764 | switch (w->id) { | |
765 | case snd_soc_dapm_pre: | |
766 | case snd_soc_dapm_post: | |
767 | case snd_soc_dapm_vmid: | |
768 | continue; | |
769 | case snd_soc_dapm_mux: | |
2e72f8e3 | 770 | case snd_soc_dapm_value_mux: |
2b97eabc RP |
771 | case snd_soc_dapm_output: |
772 | case snd_soc_dapm_input: | |
773 | case snd_soc_dapm_switch: | |
774 | case snd_soc_dapm_hp: | |
775 | case snd_soc_dapm_mic: | |
776 | case snd_soc_dapm_spk: | |
777 | case snd_soc_dapm_line: | |
778 | case snd_soc_dapm_micbias: | |
779 | case snd_soc_dapm_dac: | |
780 | case snd_soc_dapm_adc: | |
781 | case snd_soc_dapm_pga: | |
782 | case snd_soc_dapm_mixer: | |
ca9c1aae | 783 | case snd_soc_dapm_mixer_named_ctl: |
246d0a17 | 784 | case snd_soc_dapm_supply: |
2b97eabc RP |
785 | if (w->name) { |
786 | in = is_connected_input_ep(w); | |
787 | dapm_clear_walk(w->codec); | |
788 | out = is_connected_output_ep(w); | |
789 | dapm_clear_walk(w->codec); | |
790 | printk("%s: %s in %d out %d\n", w->name, | |
791 | w->power ? "On":"Off",in, out); | |
792 | ||
793 | list_for_each_entry(p, &w->sources, list_sink) { | |
794 | if (p->connect) | |
795 | printk(" in %s %s\n", p->name ? p->name : "static", | |
796 | p->source->name); | |
797 | } | |
798 | list_for_each_entry(p, &w->sinks, list_source) { | |
2b97eabc RP |
799 | if (p->connect) |
800 | printk(" out %s %s\n", p->name ? p->name : "static", | |
801 | p->sink->name); | |
802 | } | |
803 | } | |
804 | break; | |
805 | } | |
806 | } | |
807 | } | |
808 | #endif | |
809 | ||
810 | /* test and update the power status of a mux widget */ | |
d9c96cf3 AB |
811 | static int dapm_mux_update_power(struct snd_soc_dapm_widget *widget, |
812 | struct snd_kcontrol *kcontrol, int mask, | |
cb01e2b9 | 813 | int mux, int val, struct soc_enum *e) |
2b97eabc RP |
814 | { |
815 | struct snd_soc_dapm_path *path; | |
816 | int found = 0; | |
817 | ||
eff317d0 PU |
818 | if (widget->id != snd_soc_dapm_mux && |
819 | widget->id != snd_soc_dapm_value_mux) | |
2b97eabc RP |
820 | return -ENODEV; |
821 | ||
822 | if (!snd_soc_test_bits(widget->codec, e->reg, mask, val)) | |
823 | return 0; | |
824 | ||
825 | /* find dapm widget path assoc with kcontrol */ | |
826 | list_for_each_entry(path, &widget->codec->dapm_paths, list) { | |
827 | if (path->kcontrol != kcontrol) | |
828 | continue; | |
829 | ||
cb01e2b9 | 830 | if (!path->name || !e->texts[mux]) |
2b97eabc RP |
831 | continue; |
832 | ||
833 | found = 1; | |
834 | /* we now need to match the string in the enum to the path */ | |
cb01e2b9 | 835 | if (!(strcmp(path->name, e->texts[mux]))) |
2b97eabc RP |
836 | path->connect = 1; /* new connection */ |
837 | else | |
838 | path->connect = 0; /* old connection must be powered down */ | |
839 | } | |
840 | ||
3fccd8b1 | 841 | if (found) { |
2b97eabc | 842 | dapm_power_widgets(widget->codec, SND_SOC_DAPM_STREAM_NOP); |
3fccd8b1 MB |
843 | dump_dapm(widget->codec, "mux power update"); |
844 | } | |
2b97eabc RP |
845 | |
846 | return 0; | |
847 | } | |
2b97eabc | 848 | |
1b075e3f | 849 | /* test and update the power status of a mixer or switch widget */ |
d9c96cf3 AB |
850 | static int dapm_mixer_update_power(struct snd_soc_dapm_widget *widget, |
851 | struct snd_kcontrol *kcontrol, int reg, | |
852 | int val_mask, int val, int invert) | |
2b97eabc RP |
853 | { |
854 | struct snd_soc_dapm_path *path; | |
855 | int found = 0; | |
856 | ||
1b075e3f | 857 | if (widget->id != snd_soc_dapm_mixer && |
ca9c1aae | 858 | widget->id != snd_soc_dapm_mixer_named_ctl && |
1b075e3f | 859 | widget->id != snd_soc_dapm_switch) |
2b97eabc RP |
860 | return -ENODEV; |
861 | ||
862 | if (!snd_soc_test_bits(widget->codec, reg, val_mask, val)) | |
863 | return 0; | |
864 | ||
865 | /* find dapm widget path assoc with kcontrol */ | |
866 | list_for_each_entry(path, &widget->codec->dapm_paths, list) { | |
867 | if (path->kcontrol != kcontrol) | |
868 | continue; | |
869 | ||
870 | /* found, now check type */ | |
871 | found = 1; | |
872 | if (val) | |
873 | /* new connection */ | |
874 | path->connect = invert ? 0:1; | |
875 | else | |
876 | /* old connection must be powered down */ | |
877 | path->connect = invert ? 1:0; | |
878 | break; | |
879 | } | |
880 | ||
3fccd8b1 | 881 | if (found) { |
2b97eabc | 882 | dapm_power_widgets(widget->codec, SND_SOC_DAPM_STREAM_NOP); |
3fccd8b1 MB |
883 | dump_dapm(widget->codec, "mixer power update"); |
884 | } | |
2b97eabc RP |
885 | |
886 | return 0; | |
887 | } | |
2b97eabc RP |
888 | |
889 | /* show dapm widget status in sys fs */ | |
890 | static ssize_t dapm_widget_show(struct device *dev, | |
891 | struct device_attribute *attr, char *buf) | |
892 | { | |
893 | struct snd_soc_device *devdata = dev_get_drvdata(dev); | |
6627a653 | 894 | struct snd_soc_codec *codec = devdata->card->codec; |
2b97eabc RP |
895 | struct snd_soc_dapm_widget *w; |
896 | int count = 0; | |
897 | char *state = "not set"; | |
898 | ||
899 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
900 | ||
901 | /* only display widgets that burnm power */ | |
902 | switch (w->id) { | |
903 | case snd_soc_dapm_hp: | |
904 | case snd_soc_dapm_mic: | |
905 | case snd_soc_dapm_spk: | |
906 | case snd_soc_dapm_line: | |
907 | case snd_soc_dapm_micbias: | |
908 | case snd_soc_dapm_dac: | |
909 | case snd_soc_dapm_adc: | |
910 | case snd_soc_dapm_pga: | |
911 | case snd_soc_dapm_mixer: | |
ca9c1aae | 912 | case snd_soc_dapm_mixer_named_ctl: |
246d0a17 | 913 | case snd_soc_dapm_supply: |
2b97eabc RP |
914 | if (w->name) |
915 | count += sprintf(buf + count, "%s: %s\n", | |
916 | w->name, w->power ? "On":"Off"); | |
917 | break; | |
918 | default: | |
919 | break; | |
920 | } | |
921 | } | |
922 | ||
0be9898a MB |
923 | switch (codec->bias_level) { |
924 | case SND_SOC_BIAS_ON: | |
925 | state = "On"; | |
2b97eabc | 926 | break; |
0be9898a MB |
927 | case SND_SOC_BIAS_PREPARE: |
928 | state = "Prepare"; | |
2b97eabc | 929 | break; |
0be9898a MB |
930 | case SND_SOC_BIAS_STANDBY: |
931 | state = "Standby"; | |
2b97eabc | 932 | break; |
0be9898a MB |
933 | case SND_SOC_BIAS_OFF: |
934 | state = "Off"; | |
2b97eabc RP |
935 | break; |
936 | } | |
937 | count += sprintf(buf + count, "PM State: %s\n", state); | |
938 | ||
939 | return count; | |
940 | } | |
941 | ||
942 | static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL); | |
943 | ||
944 | int snd_soc_dapm_sys_add(struct device *dev) | |
945 | { | |
f0062a92 MB |
946 | if (!dapm_status) |
947 | return 0; | |
12ef193d | 948 | return device_create_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
949 | } |
950 | ||
951 | static void snd_soc_dapm_sys_remove(struct device *dev) | |
952 | { | |
15e4c72f | 953 | if (dapm_status) { |
2b97eabc | 954 | device_remove_file(dev, &dev_attr_dapm_widget); |
15e4c72f | 955 | } |
2b97eabc RP |
956 | } |
957 | ||
958 | /* free all dapm widgets and resources */ | |
d9c96cf3 | 959 | static void dapm_free_widgets(struct snd_soc_codec *codec) |
2b97eabc RP |
960 | { |
961 | struct snd_soc_dapm_widget *w, *next_w; | |
962 | struct snd_soc_dapm_path *p, *next_p; | |
963 | ||
964 | list_for_each_entry_safe(w, next_w, &codec->dapm_widgets, list) { | |
965 | list_del(&w->list); | |
966 | kfree(w); | |
967 | } | |
968 | ||
969 | list_for_each_entry_safe(p, next_p, &codec->dapm_paths, list) { | |
970 | list_del(&p->list); | |
971 | kfree(p->long_name); | |
972 | kfree(p); | |
973 | } | |
974 | } | |
975 | ||
a5302181 | 976 | static int snd_soc_dapm_set_pin(struct snd_soc_codec *codec, |
1649923d | 977 | const char *pin, int status) |
a5302181 LG |
978 | { |
979 | struct snd_soc_dapm_widget *w; | |
980 | ||
981 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
982 | if (!strcmp(w->name, pin)) { | |
c1286b86 | 983 | pr_debug("dapm: %s: pin %s\n", codec->name, pin); |
a5302181 LG |
984 | w->connected = status; |
985 | return 0; | |
986 | } | |
987 | } | |
988 | ||
c1286b86 | 989 | pr_err("dapm: %s: configuring unknown pin %s\n", codec->name, pin); |
a5302181 LG |
990 | return -EINVAL; |
991 | } | |
992 | ||
2b97eabc | 993 | /** |
a5302181 | 994 | * snd_soc_dapm_sync - scan and power dapm paths |
2b97eabc RP |
995 | * @codec: audio codec |
996 | * | |
997 | * Walks all dapm audio paths and powers widgets according to their | |
998 | * stream or path usage. | |
999 | * | |
1000 | * Returns 0 for success. | |
1001 | */ | |
a5302181 | 1002 | int snd_soc_dapm_sync(struct snd_soc_codec *codec) |
2b97eabc | 1003 | { |
3fccd8b1 MB |
1004 | int ret = dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP); |
1005 | dump_dapm(codec, "sync"); | |
1006 | return ret; | |
2b97eabc | 1007 | } |
a5302181 | 1008 | EXPORT_SYMBOL_GPL(snd_soc_dapm_sync); |
2b97eabc | 1009 | |
105f1c28 MB |
1010 | static int snd_soc_dapm_add_route(struct snd_soc_codec *codec, |
1011 | const char *sink, const char *control, const char *source) | |
2b97eabc RP |
1012 | { |
1013 | struct snd_soc_dapm_path *path; | |
1014 | struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w; | |
1015 | int ret = 0; | |
1016 | ||
1017 | /* find src and dest widgets */ | |
1018 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
1019 | ||
1020 | if (!wsink && !(strcmp(w->name, sink))) { | |
1021 | wsink = w; | |
1022 | continue; | |
1023 | } | |
1024 | if (!wsource && !(strcmp(w->name, source))) { | |
1025 | wsource = w; | |
1026 | } | |
1027 | } | |
1028 | ||
1029 | if (wsource == NULL || wsink == NULL) | |
1030 | return -ENODEV; | |
1031 | ||
1032 | path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL); | |
1033 | if (!path) | |
1034 | return -ENOMEM; | |
1035 | ||
1036 | path->source = wsource; | |
1037 | path->sink = wsink; | |
1038 | INIT_LIST_HEAD(&path->list); | |
1039 | INIT_LIST_HEAD(&path->list_source); | |
1040 | INIT_LIST_HEAD(&path->list_sink); | |
1041 | ||
1042 | /* check for external widgets */ | |
1043 | if (wsink->id == snd_soc_dapm_input) { | |
1044 | if (wsource->id == snd_soc_dapm_micbias || | |
1045 | wsource->id == snd_soc_dapm_mic || | |
1e39221e SF |
1046 | wsink->id == snd_soc_dapm_line || |
1047 | wsink->id == snd_soc_dapm_output) | |
2b97eabc RP |
1048 | wsink->ext = 1; |
1049 | } | |
1050 | if (wsource->id == snd_soc_dapm_output) { | |
1051 | if (wsink->id == snd_soc_dapm_spk || | |
1052 | wsink->id == snd_soc_dapm_hp || | |
1e39221e SF |
1053 | wsink->id == snd_soc_dapm_line || |
1054 | wsink->id == snd_soc_dapm_input) | |
2b97eabc RP |
1055 | wsource->ext = 1; |
1056 | } | |
1057 | ||
1058 | /* connect static paths */ | |
1059 | if (control == NULL) { | |
1060 | list_add(&path->list, &codec->dapm_paths); | |
1061 | list_add(&path->list_sink, &wsink->sources); | |
1062 | list_add(&path->list_source, &wsource->sinks); | |
1063 | path->connect = 1; | |
1064 | return 0; | |
1065 | } | |
1066 | ||
1067 | /* connect dynamic paths */ | |
1068 | switch(wsink->id) { | |
1069 | case snd_soc_dapm_adc: | |
1070 | case snd_soc_dapm_dac: | |
1071 | case snd_soc_dapm_pga: | |
1072 | case snd_soc_dapm_input: | |
1073 | case snd_soc_dapm_output: | |
1074 | case snd_soc_dapm_micbias: | |
1075 | case snd_soc_dapm_vmid: | |
1076 | case snd_soc_dapm_pre: | |
1077 | case snd_soc_dapm_post: | |
246d0a17 | 1078 | case snd_soc_dapm_supply: |
2b97eabc RP |
1079 | list_add(&path->list, &codec->dapm_paths); |
1080 | list_add(&path->list_sink, &wsink->sources); | |
1081 | list_add(&path->list_source, &wsource->sinks); | |
1082 | path->connect = 1; | |
1083 | return 0; | |
1084 | case snd_soc_dapm_mux: | |
74155556 | 1085 | case snd_soc_dapm_value_mux: |
2b97eabc RP |
1086 | ret = dapm_connect_mux(codec, wsource, wsink, path, control, |
1087 | &wsink->kcontrols[0]); | |
1088 | if (ret != 0) | |
1089 | goto err; | |
1090 | break; | |
1091 | case snd_soc_dapm_switch: | |
1092 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1093 | case snd_soc_dapm_mixer_named_ctl: |
2b97eabc RP |
1094 | ret = dapm_connect_mixer(codec, wsource, wsink, path, control); |
1095 | if (ret != 0) | |
1096 | goto err; | |
1097 | break; | |
1098 | case snd_soc_dapm_hp: | |
1099 | case snd_soc_dapm_mic: | |
1100 | case snd_soc_dapm_line: | |
1101 | case snd_soc_dapm_spk: | |
1102 | list_add(&path->list, &codec->dapm_paths); | |
1103 | list_add(&path->list_sink, &wsink->sources); | |
1104 | list_add(&path->list_source, &wsource->sinks); | |
1105 | path->connect = 0; | |
1106 | return 0; | |
1107 | } | |
1108 | return 0; | |
1109 | ||
1110 | err: | |
1111 | printk(KERN_WARNING "asoc: no dapm match for %s --> %s --> %s\n", source, | |
1112 | control, sink); | |
1113 | kfree(path); | |
1114 | return ret; | |
1115 | } | |
105f1c28 | 1116 | |
105f1c28 MB |
1117 | /** |
1118 | * snd_soc_dapm_add_routes - Add routes between DAPM widgets | |
1119 | * @codec: codec | |
1120 | * @route: audio routes | |
1121 | * @num: number of routes | |
1122 | * | |
1123 | * Connects 2 dapm widgets together via a named audio path. The sink is | |
1124 | * the widget receiving the audio signal, whilst the source is the sender | |
1125 | * of the audio signal. | |
1126 | * | |
1127 | * Returns 0 for success else error. On error all resources can be freed | |
1128 | * with a call to snd_soc_card_free(). | |
1129 | */ | |
1130 | int snd_soc_dapm_add_routes(struct snd_soc_codec *codec, | |
1131 | const struct snd_soc_dapm_route *route, int num) | |
1132 | { | |
1133 | int i, ret; | |
1134 | ||
1135 | for (i = 0; i < num; i++) { | |
1136 | ret = snd_soc_dapm_add_route(codec, route->sink, | |
1137 | route->control, route->source); | |
1138 | if (ret < 0) { | |
1139 | printk(KERN_ERR "Failed to add route %s->%s\n", | |
1140 | route->source, | |
1141 | route->sink); | |
1142 | return ret; | |
1143 | } | |
1144 | route++; | |
1145 | } | |
1146 | ||
1147 | return 0; | |
1148 | } | |
1149 | EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes); | |
1150 | ||
2b97eabc RP |
1151 | /** |
1152 | * snd_soc_dapm_new_widgets - add new dapm widgets | |
1153 | * @codec: audio codec | |
1154 | * | |
1155 | * Checks the codec for any new dapm widgets and creates them if found. | |
1156 | * | |
1157 | * Returns 0 for success. | |
1158 | */ | |
1159 | int snd_soc_dapm_new_widgets(struct snd_soc_codec *codec) | |
1160 | { | |
1161 | struct snd_soc_dapm_widget *w; | |
1162 | ||
2b97eabc RP |
1163 | list_for_each_entry(w, &codec->dapm_widgets, list) |
1164 | { | |
1165 | if (w->new) | |
1166 | continue; | |
1167 | ||
1168 | switch(w->id) { | |
1169 | case snd_soc_dapm_switch: | |
1170 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1171 | case snd_soc_dapm_mixer_named_ctl: |
b75576d7 | 1172 | w->power_check = dapm_generic_check_power; |
2b97eabc RP |
1173 | dapm_new_mixer(codec, w); |
1174 | break; | |
1175 | case snd_soc_dapm_mux: | |
2e72f8e3 | 1176 | case snd_soc_dapm_value_mux: |
b75576d7 | 1177 | w->power_check = dapm_generic_check_power; |
2b97eabc RP |
1178 | dapm_new_mux(codec, w); |
1179 | break; | |
1180 | case snd_soc_dapm_adc: | |
b75576d7 MB |
1181 | w->power_check = dapm_adc_check_power; |
1182 | break; | |
2b97eabc | 1183 | case snd_soc_dapm_dac: |
b75576d7 MB |
1184 | w->power_check = dapm_dac_check_power; |
1185 | break; | |
2b97eabc | 1186 | case snd_soc_dapm_pga: |
b75576d7 | 1187 | w->power_check = dapm_generic_check_power; |
2b97eabc RP |
1188 | dapm_new_pga(codec, w); |
1189 | break; | |
1190 | case snd_soc_dapm_input: | |
1191 | case snd_soc_dapm_output: | |
1192 | case snd_soc_dapm_micbias: | |
1193 | case snd_soc_dapm_spk: | |
1194 | case snd_soc_dapm_hp: | |
1195 | case snd_soc_dapm_mic: | |
1196 | case snd_soc_dapm_line: | |
b75576d7 MB |
1197 | w->power_check = dapm_generic_check_power; |
1198 | break; | |
246d0a17 MB |
1199 | case snd_soc_dapm_supply: |
1200 | w->power_check = dapm_supply_check_power; | |
2b97eabc RP |
1201 | case snd_soc_dapm_vmid: |
1202 | case snd_soc_dapm_pre: | |
1203 | case snd_soc_dapm_post: | |
1204 | break; | |
1205 | } | |
1206 | w->new = 1; | |
1207 | } | |
1208 | ||
1209 | dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP); | |
2b97eabc RP |
1210 | return 0; |
1211 | } | |
1212 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets); | |
1213 | ||
1214 | /** | |
1215 | * snd_soc_dapm_get_volsw - dapm mixer get callback | |
1216 | * @kcontrol: mixer control | |
ac11a2b3 | 1217 | * @ucontrol: control element information |
2b97eabc RP |
1218 | * |
1219 | * Callback to get the value of a dapm mixer control. | |
1220 | * | |
1221 | * Returns 0 for success. | |
1222 | */ | |
1223 | int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol, | |
1224 | struct snd_ctl_elem_value *ucontrol) | |
1225 | { | |
1226 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
4eaa9819 JS |
1227 | struct soc_mixer_control *mc = |
1228 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
1229 | unsigned int reg = mc->reg; |
1230 | unsigned int shift = mc->shift; | |
1231 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1232 | int max = mc->max; |
815ecf8d JS |
1233 | unsigned int invert = mc->invert; |
1234 | unsigned int mask = (1 << fls(max)) - 1; | |
2b97eabc RP |
1235 | |
1236 | /* return the saved value if we are powered down */ | |
1237 | if (widget->id == snd_soc_dapm_pga && !widget->power) { | |
1238 | ucontrol->value.integer.value[0] = widget->saved_value; | |
1239 | return 0; | |
1240 | } | |
1241 | ||
1242 | ucontrol->value.integer.value[0] = | |
1243 | (snd_soc_read(widget->codec, reg) >> shift) & mask; | |
1244 | if (shift != rshift) | |
1245 | ucontrol->value.integer.value[1] = | |
1246 | (snd_soc_read(widget->codec, reg) >> rshift) & mask; | |
1247 | if (invert) { | |
1248 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1249 | max - ucontrol->value.integer.value[0]; |
2b97eabc RP |
1250 | if (shift != rshift) |
1251 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 1252 | max - ucontrol->value.integer.value[1]; |
2b97eabc RP |
1253 | } |
1254 | ||
1255 | return 0; | |
1256 | } | |
1257 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw); | |
1258 | ||
1259 | /** | |
1260 | * snd_soc_dapm_put_volsw - dapm mixer set callback | |
1261 | * @kcontrol: mixer control | |
ac11a2b3 | 1262 | * @ucontrol: control element information |
2b97eabc RP |
1263 | * |
1264 | * Callback to set the value of a dapm mixer control. | |
1265 | * | |
1266 | * Returns 0 for success. | |
1267 | */ | |
1268 | int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, | |
1269 | struct snd_ctl_elem_value *ucontrol) | |
1270 | { | |
1271 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
4eaa9819 JS |
1272 | struct soc_mixer_control *mc = |
1273 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
1274 | unsigned int reg = mc->reg; |
1275 | unsigned int shift = mc->shift; | |
1276 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1277 | int max = mc->max; |
815ecf8d JS |
1278 | unsigned int mask = (1 << fls(max)) - 1; |
1279 | unsigned int invert = mc->invert; | |
2b97eabc RP |
1280 | unsigned short val, val2, val_mask; |
1281 | int ret; | |
1282 | ||
1283 | val = (ucontrol->value.integer.value[0] & mask); | |
1284 | ||
1285 | if (invert) | |
a7a4ac86 | 1286 | val = max - val; |
2b97eabc RP |
1287 | val_mask = mask << shift; |
1288 | val = val << shift; | |
1289 | if (shift != rshift) { | |
1290 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1291 | if (invert) | |
a7a4ac86 | 1292 | val2 = max - val2; |
2b97eabc RP |
1293 | val_mask |= mask << rshift; |
1294 | val |= val2 << rshift; | |
1295 | } | |
1296 | ||
1297 | mutex_lock(&widget->codec->mutex); | |
1298 | widget->value = val; | |
1299 | ||
1300 | /* save volume value if the widget is powered down */ | |
1301 | if (widget->id == snd_soc_dapm_pga && !widget->power) { | |
1302 | widget->saved_value = val; | |
1303 | mutex_unlock(&widget->codec->mutex); | |
1304 | return 1; | |
1305 | } | |
1306 | ||
1307 | dapm_mixer_update_power(widget, kcontrol, reg, val_mask, val, invert); | |
1308 | if (widget->event) { | |
1309 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
9af6d956 LG |
1310 | ret = widget->event(widget, kcontrol, |
1311 | SND_SOC_DAPM_PRE_REG); | |
1312 | if (ret < 0) { | |
1313 | ret = 1; | |
2b97eabc | 1314 | goto out; |
9af6d956 | 1315 | } |
2b97eabc RP |
1316 | } |
1317 | ret = snd_soc_update_bits(widget->codec, reg, val_mask, val); | |
1318 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
9af6d956 LG |
1319 | ret = widget->event(widget, kcontrol, |
1320 | SND_SOC_DAPM_POST_REG); | |
2b97eabc RP |
1321 | } else |
1322 | ret = snd_soc_update_bits(widget->codec, reg, val_mask, val); | |
1323 | ||
1324 | out: | |
1325 | mutex_unlock(&widget->codec->mutex); | |
1326 | return ret; | |
1327 | } | |
1328 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw); | |
1329 | ||
1330 | /** | |
1331 | * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback | |
1332 | * @kcontrol: mixer control | |
ac11a2b3 | 1333 | * @ucontrol: control element information |
2b97eabc RP |
1334 | * |
1335 | * Callback to get the value of a dapm enumerated double mixer control. | |
1336 | * | |
1337 | * Returns 0 for success. | |
1338 | */ | |
1339 | int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol, | |
1340 | struct snd_ctl_elem_value *ucontrol) | |
1341 | { | |
1342 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1343 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1344 | unsigned short val, bitmask; | |
1345 | ||
f8ba0b7b | 1346 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
1347 | ; |
1348 | val = snd_soc_read(widget->codec, e->reg); | |
1349 | ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1); | |
1350 | if (e->shift_l != e->shift_r) | |
1351 | ucontrol->value.enumerated.item[1] = | |
1352 | (val >> e->shift_r) & (bitmask - 1); | |
1353 | ||
1354 | return 0; | |
1355 | } | |
1356 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double); | |
1357 | ||
1358 | /** | |
1359 | * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback | |
1360 | * @kcontrol: mixer control | |
ac11a2b3 | 1361 | * @ucontrol: control element information |
2b97eabc RP |
1362 | * |
1363 | * Callback to set the value of a dapm enumerated double mixer control. | |
1364 | * | |
1365 | * Returns 0 for success. | |
1366 | */ | |
1367 | int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, | |
1368 | struct snd_ctl_elem_value *ucontrol) | |
1369 | { | |
1370 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1371 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1372 | unsigned short val, mux; | |
1373 | unsigned short mask, bitmask; | |
1374 | int ret = 0; | |
1375 | ||
f8ba0b7b | 1376 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc | 1377 | ; |
f8ba0b7b | 1378 | if (ucontrol->value.enumerated.item[0] > e->max - 1) |
2b97eabc RP |
1379 | return -EINVAL; |
1380 | mux = ucontrol->value.enumerated.item[0]; | |
1381 | val = mux << e->shift_l; | |
1382 | mask = (bitmask - 1) << e->shift_l; | |
1383 | if (e->shift_l != e->shift_r) { | |
f8ba0b7b | 1384 | if (ucontrol->value.enumerated.item[1] > e->max - 1) |
2b97eabc RP |
1385 | return -EINVAL; |
1386 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
1387 | mask |= (bitmask - 1) << e->shift_r; | |
1388 | } | |
1389 | ||
1390 | mutex_lock(&widget->codec->mutex); | |
1391 | widget->value = val; | |
cb01e2b9 | 1392 | dapm_mux_update_power(widget, kcontrol, mask, mux, val, e); |
2b97eabc RP |
1393 | if (widget->event) { |
1394 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
9af6d956 LG |
1395 | ret = widget->event(widget, |
1396 | kcontrol, SND_SOC_DAPM_PRE_REG); | |
2b97eabc RP |
1397 | if (ret < 0) |
1398 | goto out; | |
1399 | } | |
1400 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1401 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
9af6d956 LG |
1402 | ret = widget->event(widget, |
1403 | kcontrol, SND_SOC_DAPM_POST_REG); | |
2b97eabc RP |
1404 | } else |
1405 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1406 | ||
1407 | out: | |
1408 | mutex_unlock(&widget->codec->mutex); | |
1409 | return ret; | |
1410 | } | |
1411 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double); | |
1412 | ||
2e72f8e3 PU |
1413 | /** |
1414 | * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get | |
1415 | * callback | |
1416 | * @kcontrol: mixer control | |
1417 | * @ucontrol: control element information | |
1418 | * | |
1419 | * Callback to get the value of a dapm semi enumerated double mixer control. | |
1420 | * | |
1421 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
1422 | * used for handling bitfield coded enumeration for example. | |
1423 | * | |
1424 | * Returns 0 for success. | |
1425 | */ | |
1426 | int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol *kcontrol, | |
1427 | struct snd_ctl_elem_value *ucontrol) | |
1428 | { | |
1429 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
74155556 | 1430 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
2e72f8e3 PU |
1431 | unsigned short reg_val, val, mux; |
1432 | ||
1433 | reg_val = snd_soc_read(widget->codec, e->reg); | |
1434 | val = (reg_val >> e->shift_l) & e->mask; | |
1435 | for (mux = 0; mux < e->max; mux++) { | |
1436 | if (val == e->values[mux]) | |
1437 | break; | |
1438 | } | |
1439 | ucontrol->value.enumerated.item[0] = mux; | |
1440 | if (e->shift_l != e->shift_r) { | |
1441 | val = (reg_val >> e->shift_r) & e->mask; | |
1442 | for (mux = 0; mux < e->max; mux++) { | |
1443 | if (val == e->values[mux]) | |
1444 | break; | |
1445 | } | |
1446 | ucontrol->value.enumerated.item[1] = mux; | |
1447 | } | |
1448 | ||
1449 | return 0; | |
1450 | } | |
1451 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double); | |
1452 | ||
1453 | /** | |
1454 | * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set | |
1455 | * callback | |
1456 | * @kcontrol: mixer control | |
1457 | * @ucontrol: control element information | |
1458 | * | |
1459 | * Callback to set the value of a dapm semi enumerated double mixer control. | |
1460 | * | |
1461 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
1462 | * used for handling bitfield coded enumeration for example. | |
1463 | * | |
1464 | * Returns 0 for success. | |
1465 | */ | |
1466 | int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol, | |
1467 | struct snd_ctl_elem_value *ucontrol) | |
1468 | { | |
1469 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
74155556 | 1470 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
2e72f8e3 PU |
1471 | unsigned short val, mux; |
1472 | unsigned short mask; | |
1473 | int ret = 0; | |
1474 | ||
1475 | if (ucontrol->value.enumerated.item[0] > e->max - 1) | |
1476 | return -EINVAL; | |
1477 | mux = ucontrol->value.enumerated.item[0]; | |
1478 | val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l; | |
1479 | mask = e->mask << e->shift_l; | |
1480 | if (e->shift_l != e->shift_r) { | |
1481 | if (ucontrol->value.enumerated.item[1] > e->max - 1) | |
1482 | return -EINVAL; | |
1483 | val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r; | |
1484 | mask |= e->mask << e->shift_r; | |
1485 | } | |
1486 | ||
1487 | mutex_lock(&widget->codec->mutex); | |
1488 | widget->value = val; | |
74155556 | 1489 | dapm_mux_update_power(widget, kcontrol, mask, mux, val, e); |
2e72f8e3 PU |
1490 | if (widget->event) { |
1491 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
1492 | ret = widget->event(widget, | |
1493 | kcontrol, SND_SOC_DAPM_PRE_REG); | |
1494 | if (ret < 0) | |
1495 | goto out; | |
1496 | } | |
1497 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1498 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
1499 | ret = widget->event(widget, | |
1500 | kcontrol, SND_SOC_DAPM_POST_REG); | |
1501 | } else | |
1502 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1503 | ||
1504 | out: | |
1505 | mutex_unlock(&widget->codec->mutex); | |
1506 | return ret; | |
1507 | } | |
1508 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double); | |
1509 | ||
8b37dbd2 MB |
1510 | /** |
1511 | * snd_soc_dapm_info_pin_switch - Info for a pin switch | |
1512 | * | |
1513 | * @kcontrol: mixer control | |
1514 | * @uinfo: control element information | |
1515 | * | |
1516 | * Callback to provide information about a pin switch control. | |
1517 | */ | |
1518 | int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol, | |
1519 | struct snd_ctl_elem_info *uinfo) | |
1520 | { | |
1521 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1522 | uinfo->count = 1; | |
1523 | uinfo->value.integer.min = 0; | |
1524 | uinfo->value.integer.max = 1; | |
1525 | ||
1526 | return 0; | |
1527 | } | |
1528 | EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch); | |
1529 | ||
1530 | /** | |
1531 | * snd_soc_dapm_get_pin_switch - Get information for a pin switch | |
1532 | * | |
1533 | * @kcontrol: mixer control | |
1534 | * @ucontrol: Value | |
1535 | */ | |
1536 | int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol, | |
1537 | struct snd_ctl_elem_value *ucontrol) | |
1538 | { | |
1539 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1540 | const char *pin = (const char *)kcontrol->private_value; | |
1541 | ||
1542 | mutex_lock(&codec->mutex); | |
1543 | ||
1544 | ucontrol->value.integer.value[0] = | |
1545 | snd_soc_dapm_get_pin_status(codec, pin); | |
1546 | ||
1547 | mutex_unlock(&codec->mutex); | |
1548 | ||
1549 | return 0; | |
1550 | } | |
1551 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch); | |
1552 | ||
1553 | /** | |
1554 | * snd_soc_dapm_put_pin_switch - Set information for a pin switch | |
1555 | * | |
1556 | * @kcontrol: mixer control | |
1557 | * @ucontrol: Value | |
1558 | */ | |
1559 | int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol, | |
1560 | struct snd_ctl_elem_value *ucontrol) | |
1561 | { | |
1562 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1563 | const char *pin = (const char *)kcontrol->private_value; | |
1564 | ||
1565 | mutex_lock(&codec->mutex); | |
1566 | ||
1567 | if (ucontrol->value.integer.value[0]) | |
1568 | snd_soc_dapm_enable_pin(codec, pin); | |
1569 | else | |
1570 | snd_soc_dapm_disable_pin(codec, pin); | |
1571 | ||
1572 | snd_soc_dapm_sync(codec); | |
1573 | ||
1574 | mutex_unlock(&codec->mutex); | |
1575 | ||
1576 | return 0; | |
1577 | } | |
1578 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch); | |
1579 | ||
2b97eabc RP |
1580 | /** |
1581 | * snd_soc_dapm_new_control - create new dapm control | |
1582 | * @codec: audio codec | |
1583 | * @widget: widget template | |
1584 | * | |
1585 | * Creates a new dapm control based upon the template. | |
1586 | * | |
1587 | * Returns 0 for success else error. | |
1588 | */ | |
1589 | int snd_soc_dapm_new_control(struct snd_soc_codec *codec, | |
1590 | const struct snd_soc_dapm_widget *widget) | |
1591 | { | |
1592 | struct snd_soc_dapm_widget *w; | |
1593 | ||
1594 | if ((w = dapm_cnew_widget(widget)) == NULL) | |
1595 | return -ENOMEM; | |
1596 | ||
1597 | w->codec = codec; | |
1598 | INIT_LIST_HEAD(&w->sources); | |
1599 | INIT_LIST_HEAD(&w->sinks); | |
1600 | INIT_LIST_HEAD(&w->list); | |
1601 | list_add(&w->list, &codec->dapm_widgets); | |
1602 | ||
1603 | /* machine layer set ups unconnected pins and insertions */ | |
1604 | w->connected = 1; | |
1605 | return 0; | |
1606 | } | |
1607 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control); | |
1608 | ||
4ba1327a MB |
1609 | /** |
1610 | * snd_soc_dapm_new_controls - create new dapm controls | |
1611 | * @codec: audio codec | |
1612 | * @widget: widget array | |
1613 | * @num: number of widgets | |
1614 | * | |
1615 | * Creates new DAPM controls based upon the templates. | |
1616 | * | |
1617 | * Returns 0 for success else error. | |
1618 | */ | |
1619 | int snd_soc_dapm_new_controls(struct snd_soc_codec *codec, | |
1620 | const struct snd_soc_dapm_widget *widget, | |
1621 | int num) | |
1622 | { | |
1623 | int i, ret; | |
1624 | ||
1625 | for (i = 0; i < num; i++) { | |
1626 | ret = snd_soc_dapm_new_control(codec, widget); | |
b8b33cb5 MB |
1627 | if (ret < 0) { |
1628 | printk(KERN_ERR | |
1629 | "ASoC: Failed to create DAPM control %s: %d\n", | |
1630 | widget->name, ret); | |
4ba1327a | 1631 | return ret; |
b8b33cb5 | 1632 | } |
4ba1327a MB |
1633 | widget++; |
1634 | } | |
1635 | return 0; | |
1636 | } | |
1637 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls); | |
1638 | ||
1639 | ||
2b97eabc RP |
1640 | /** |
1641 | * snd_soc_dapm_stream_event - send a stream event to the dapm core | |
1642 | * @codec: audio codec | |
1643 | * @stream: stream name | |
1644 | * @event: stream event | |
1645 | * | |
1646 | * Sends a stream event to the dapm core. The core then makes any | |
1647 | * necessary widget power changes. | |
1648 | * | |
1649 | * Returns 0 for success else error. | |
1650 | */ | |
1651 | int snd_soc_dapm_stream_event(struct snd_soc_codec *codec, | |
1652 | char *stream, int event) | |
1653 | { | |
1654 | struct snd_soc_dapm_widget *w; | |
1655 | ||
11da21a7 SF |
1656 | if (stream == NULL) |
1657 | return 0; | |
1658 | ||
2b97eabc RP |
1659 | mutex_lock(&codec->mutex); |
1660 | list_for_each_entry(w, &codec->dapm_widgets, list) | |
1661 | { | |
1662 | if (!w->sname) | |
1663 | continue; | |
c1286b86 MB |
1664 | pr_debug("widget %s\n %s stream %s event %d\n", |
1665 | w->name, w->sname, stream, event); | |
2b97eabc RP |
1666 | if (strstr(w->sname, stream)) { |
1667 | switch(event) { | |
1668 | case SND_SOC_DAPM_STREAM_START: | |
1669 | w->active = 1; | |
1670 | break; | |
1671 | case SND_SOC_DAPM_STREAM_STOP: | |
1672 | w->active = 0; | |
1673 | break; | |
1674 | case SND_SOC_DAPM_STREAM_SUSPEND: | |
1675 | if (w->active) | |
1676 | w->suspend = 1; | |
1677 | w->active = 0; | |
1678 | break; | |
1679 | case SND_SOC_DAPM_STREAM_RESUME: | |
1680 | if (w->suspend) { | |
1681 | w->active = 1; | |
1682 | w->suspend = 0; | |
1683 | } | |
1684 | break; | |
1685 | case SND_SOC_DAPM_STREAM_PAUSE_PUSH: | |
1686 | break; | |
1687 | case SND_SOC_DAPM_STREAM_PAUSE_RELEASE: | |
1688 | break; | |
1689 | } | |
1690 | } | |
1691 | } | |
1692 | mutex_unlock(&codec->mutex); | |
1693 | ||
1694 | dapm_power_widgets(codec, event); | |
9bf8e7dd | 1695 | dump_dapm(codec, __func__); |
2b97eabc RP |
1696 | return 0; |
1697 | } | |
1698 | EXPORT_SYMBOL_GPL(snd_soc_dapm_stream_event); | |
1699 | ||
0b4d221b | 1700 | /** |
0be9898a | 1701 | * snd_soc_dapm_set_bias_level - set the bias level for the system |
0b4d221b | 1702 | * @socdev: audio device |
0be9898a | 1703 | * @level: level to configure |
0b4d221b | 1704 | * |
0be9898a | 1705 | * Configure the bias (power) levels for the SoC audio device. |
0b4d221b LG |
1706 | * |
1707 | * Returns 0 for success else error. | |
1708 | */ | |
0be9898a MB |
1709 | int snd_soc_dapm_set_bias_level(struct snd_soc_device *socdev, |
1710 | enum snd_soc_bias_level level) | |
0b4d221b | 1711 | { |
87506549 | 1712 | struct snd_soc_card *card = socdev->card; |
6627a653 | 1713 | struct snd_soc_codec *codec = socdev->card->codec; |
0be9898a | 1714 | int ret = 0; |
0b4d221b | 1715 | |
87506549 MB |
1716 | if (card->set_bias_level) |
1717 | ret = card->set_bias_level(card, level); | |
0be9898a MB |
1718 | if (ret == 0 && codec->set_bias_level) |
1719 | ret = codec->set_bias_level(codec, level); | |
1720 | ||
1721 | return ret; | |
0b4d221b | 1722 | } |
0b4d221b | 1723 | |
2b97eabc | 1724 | /** |
a5302181 | 1725 | * snd_soc_dapm_enable_pin - enable pin. |
ac11a2b3 | 1726 | * @codec: SoC codec |
a5302181 | 1727 | * @pin: pin name |
2b97eabc | 1728 | * |
a5302181 LG |
1729 | * Enables input/output pin and it's parents or children widgets iff there is |
1730 | * a valid audio route and active audio stream. | |
1731 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
1732 | * do any widget power switching. | |
2b97eabc | 1733 | */ |
1649923d | 1734 | int snd_soc_dapm_enable_pin(struct snd_soc_codec *codec, const char *pin) |
2b97eabc | 1735 | { |
a5302181 LG |
1736 | return snd_soc_dapm_set_pin(codec, pin, 1); |
1737 | } | |
1738 | EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin); | |
2b97eabc | 1739 | |
a5302181 LG |
1740 | /** |
1741 | * snd_soc_dapm_disable_pin - disable pin. | |
1742 | * @codec: SoC codec | |
1743 | * @pin: pin name | |
1744 | * | |
1745 | * Disables input/output pin and it's parents or children widgets. | |
1746 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
1747 | * do any widget power switching. | |
1748 | */ | |
1649923d | 1749 | int snd_soc_dapm_disable_pin(struct snd_soc_codec *codec, const char *pin) |
a5302181 LG |
1750 | { |
1751 | return snd_soc_dapm_set_pin(codec, pin, 0); | |
2b97eabc | 1752 | } |
a5302181 | 1753 | EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin); |
2b97eabc | 1754 | |
5817b52a MB |
1755 | /** |
1756 | * snd_soc_dapm_nc_pin - permanently disable pin. | |
1757 | * @codec: SoC codec | |
1758 | * @pin: pin name | |
1759 | * | |
1760 | * Marks the specified pin as being not connected, disabling it along | |
1761 | * any parent or child widgets. At present this is identical to | |
1762 | * snd_soc_dapm_disable_pin() but in future it will be extended to do | |
1763 | * additional things such as disabling controls which only affect | |
1764 | * paths through the pin. | |
1765 | * | |
1766 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
1767 | * do any widget power switching. | |
1768 | */ | |
1649923d | 1769 | int snd_soc_dapm_nc_pin(struct snd_soc_codec *codec, const char *pin) |
5817b52a MB |
1770 | { |
1771 | return snd_soc_dapm_set_pin(codec, pin, 0); | |
1772 | } | |
1773 | EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin); | |
1774 | ||
eeec12bf | 1775 | /** |
a5302181 | 1776 | * snd_soc_dapm_get_pin_status - get audio pin status |
eeec12bf | 1777 | * @codec: audio codec |
a5302181 | 1778 | * @pin: audio signal pin endpoint (or start point) |
eeec12bf | 1779 | * |
a5302181 | 1780 | * Get audio pin status - connected or disconnected. |
eeec12bf | 1781 | * |
a5302181 | 1782 | * Returns 1 for connected otherwise 0. |
eeec12bf | 1783 | */ |
1649923d | 1784 | int snd_soc_dapm_get_pin_status(struct snd_soc_codec *codec, const char *pin) |
eeec12bf GG |
1785 | { |
1786 | struct snd_soc_dapm_widget *w; | |
1787 | ||
1788 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
a5302181 | 1789 | if (!strcmp(w->name, pin)) |
eeec12bf GG |
1790 | return w->connected; |
1791 | } | |
1792 | ||
1793 | return 0; | |
1794 | } | |
a5302181 | 1795 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status); |
eeec12bf | 1796 | |
2b97eabc RP |
1797 | /** |
1798 | * snd_soc_dapm_free - free dapm resources | |
1799 | * @socdev: SoC device | |
1800 | * | |
1801 | * Free all dapm widgets and resources. | |
1802 | */ | |
1803 | void snd_soc_dapm_free(struct snd_soc_device *socdev) | |
1804 | { | |
6627a653 | 1805 | struct snd_soc_codec *codec = socdev->card->codec; |
2b97eabc RP |
1806 | |
1807 | snd_soc_dapm_sys_remove(socdev->dev); | |
1808 | dapm_free_widgets(codec); | |
1809 | } | |
1810 | EXPORT_SYMBOL_GPL(snd_soc_dapm_free); | |
1811 | ||
1812 | /* Module information */ | |
d331124d | 1813 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
2b97eabc RP |
1814 | MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC"); |
1815 | MODULE_LICENSE("GPL"); |