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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 | |
74b8f955 | 15 | * DACs/ADCs. |
2b97eabc RP |
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 | ||
12ef193d | 70 | static void pop_wait(u32 pop_time) |
15e4c72f MB |
71 | { |
72 | if (pop_time) | |
73 | schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time)); | |
74 | } | |
75 | ||
12ef193d | 76 | static void pop_dbg(u32 pop_time, const char *fmt, ...) |
15e4c72f MB |
77 | { |
78 | va_list args; | |
79 | ||
80 | va_start(args, fmt); | |
81 | ||
82 | if (pop_time) { | |
83 | vprintk(fmt, args); | |
12ef193d | 84 | pop_wait(pop_time); |
15e4c72f MB |
85 | } |
86 | ||
87 | va_end(args); | |
88 | } | |
89 | ||
2b97eabc | 90 | /* create a new dapm widget */ |
88cb4290 | 91 | static inline struct snd_soc_dapm_widget *dapm_cnew_widget( |
2b97eabc RP |
92 | const struct snd_soc_dapm_widget *_widget) |
93 | { | |
88cb4290 | 94 | return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL); |
2b97eabc RP |
95 | } |
96 | ||
452c5eaa MB |
97 | /** |
98 | * snd_soc_dapm_set_bias_level - set the bias level for the system | |
99 | * @socdev: audio device | |
100 | * @level: level to configure | |
101 | * | |
102 | * Configure the bias (power) levels for the SoC audio device. | |
103 | * | |
104 | * Returns 0 for success else error. | |
105 | */ | |
106 | static int snd_soc_dapm_set_bias_level(struct snd_soc_device *socdev, | |
107 | enum snd_soc_bias_level level) | |
108 | { | |
109 | struct snd_soc_card *card = socdev->card; | |
110 | struct snd_soc_codec *codec = socdev->card->codec; | |
111 | int ret = 0; | |
112 | ||
f83fba8b MB |
113 | switch (level) { |
114 | case SND_SOC_BIAS_ON: | |
115 | dev_dbg(socdev->dev, "Setting full bias\n"); | |
116 | break; | |
117 | case SND_SOC_BIAS_PREPARE: | |
118 | dev_dbg(socdev->dev, "Setting bias prepare\n"); | |
119 | break; | |
120 | case SND_SOC_BIAS_STANDBY: | |
121 | dev_dbg(socdev->dev, "Setting standby bias\n"); | |
122 | break; | |
123 | case SND_SOC_BIAS_OFF: | |
124 | dev_dbg(socdev->dev, "Setting bias off\n"); | |
125 | break; | |
126 | default: | |
127 | dev_err(socdev->dev, "Setting invalid bias %d\n", level); | |
128 | return -EINVAL; | |
129 | } | |
130 | ||
452c5eaa MB |
131 | if (card->set_bias_level) |
132 | ret = card->set_bias_level(card, level); | |
133 | if (ret == 0 && codec->set_bias_level) | |
134 | ret = codec->set_bias_level(codec, level); | |
135 | ||
136 | return ret; | |
137 | } | |
138 | ||
2b97eabc RP |
139 | /* set up initial codec paths */ |
140 | static void dapm_set_path_status(struct snd_soc_dapm_widget *w, | |
141 | struct snd_soc_dapm_path *p, int i) | |
142 | { | |
143 | switch (w->id) { | |
144 | case snd_soc_dapm_switch: | |
ca9c1aae IM |
145 | case snd_soc_dapm_mixer: |
146 | case snd_soc_dapm_mixer_named_ctl: { | |
2b97eabc | 147 | int val; |
4eaa9819 JS |
148 | struct soc_mixer_control *mc = (struct soc_mixer_control *) |
149 | w->kcontrols[i].private_value; | |
815ecf8d JS |
150 | unsigned int reg = mc->reg; |
151 | unsigned int shift = mc->shift; | |
4eaa9819 | 152 | int max = mc->max; |
815ecf8d JS |
153 | unsigned int mask = (1 << fls(max)) - 1; |
154 | unsigned int invert = mc->invert; | |
2b97eabc RP |
155 | |
156 | val = snd_soc_read(w->codec, reg); | |
157 | val = (val >> shift) & mask; | |
158 | ||
159 | if ((invert && !val) || (!invert && val)) | |
160 | p->connect = 1; | |
161 | else | |
162 | p->connect = 0; | |
163 | } | |
164 | break; | |
165 | case snd_soc_dapm_mux: { | |
166 | struct soc_enum *e = (struct soc_enum *)w->kcontrols[i].private_value; | |
167 | int val, item, bitmask; | |
168 | ||
f8ba0b7b | 169 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
170 | ; |
171 | val = snd_soc_read(w->codec, e->reg); | |
172 | item = (val >> e->shift_l) & (bitmask - 1); | |
173 | ||
174 | p->connect = 0; | |
f8ba0b7b | 175 | for (i = 0; i < e->max; i++) { |
2b97eabc RP |
176 | if (!(strcmp(p->name, e->texts[i])) && item == i) |
177 | p->connect = 1; | |
178 | } | |
179 | } | |
180 | break; | |
2e72f8e3 | 181 | case snd_soc_dapm_value_mux: { |
74155556 | 182 | struct soc_enum *e = (struct soc_enum *) |
2e72f8e3 PU |
183 | w->kcontrols[i].private_value; |
184 | int val, item; | |
185 | ||
186 | val = snd_soc_read(w->codec, e->reg); | |
187 | val = (val >> e->shift_l) & e->mask; | |
188 | for (item = 0; item < e->max; item++) { | |
189 | if (val == e->values[item]) | |
190 | break; | |
191 | } | |
192 | ||
193 | p->connect = 0; | |
194 | for (i = 0; i < e->max; i++) { | |
195 | if (!(strcmp(p->name, e->texts[i])) && item == i) | |
196 | p->connect = 1; | |
197 | } | |
198 | } | |
199 | break; | |
2b97eabc RP |
200 | /* does not effect routing - always connected */ |
201 | case snd_soc_dapm_pga: | |
202 | case snd_soc_dapm_output: | |
203 | case snd_soc_dapm_adc: | |
204 | case snd_soc_dapm_input: | |
205 | case snd_soc_dapm_dac: | |
206 | case snd_soc_dapm_micbias: | |
207 | case snd_soc_dapm_vmid: | |
246d0a17 | 208 | case snd_soc_dapm_supply: |
2b97eabc RP |
209 | p->connect = 1; |
210 | break; | |
211 | /* does effect routing - dynamically connected */ | |
212 | case snd_soc_dapm_hp: | |
213 | case snd_soc_dapm_mic: | |
214 | case snd_soc_dapm_spk: | |
215 | case snd_soc_dapm_line: | |
216 | case snd_soc_dapm_pre: | |
217 | case snd_soc_dapm_post: | |
218 | p->connect = 0; | |
219 | break; | |
220 | } | |
221 | } | |
222 | ||
74b8f955 | 223 | /* connect mux widget to its interconnecting audio paths */ |
2b97eabc RP |
224 | static int dapm_connect_mux(struct snd_soc_codec *codec, |
225 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, | |
226 | struct snd_soc_dapm_path *path, const char *control_name, | |
227 | const struct snd_kcontrol_new *kcontrol) | |
228 | { | |
229 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
230 | int i; | |
231 | ||
f8ba0b7b | 232 | for (i = 0; i < e->max; i++) { |
2b97eabc RP |
233 | if (!(strcmp(control_name, e->texts[i]))) { |
234 | list_add(&path->list, &codec->dapm_paths); | |
235 | list_add(&path->list_sink, &dest->sources); | |
236 | list_add(&path->list_source, &src->sinks); | |
237 | path->name = (char*)e->texts[i]; | |
238 | dapm_set_path_status(dest, path, 0); | |
239 | return 0; | |
240 | } | |
241 | } | |
242 | ||
243 | return -ENODEV; | |
244 | } | |
245 | ||
74b8f955 | 246 | /* connect mixer widget to its interconnecting audio paths */ |
2b97eabc RP |
247 | static int dapm_connect_mixer(struct snd_soc_codec *codec, |
248 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, | |
249 | struct snd_soc_dapm_path *path, const char *control_name) | |
250 | { | |
251 | int i; | |
252 | ||
253 | /* search for mixer kcontrol */ | |
254 | for (i = 0; i < dest->num_kcontrols; i++) { | |
255 | if (!strcmp(control_name, dest->kcontrols[i].name)) { | |
256 | list_add(&path->list, &codec->dapm_paths); | |
257 | list_add(&path->list_sink, &dest->sources); | |
258 | list_add(&path->list_source, &src->sinks); | |
259 | path->name = dest->kcontrols[i].name; | |
260 | dapm_set_path_status(dest, path, i); | |
261 | return 0; | |
262 | } | |
263 | } | |
264 | return -ENODEV; | |
265 | } | |
266 | ||
267 | /* update dapm codec register bits */ | |
268 | static int dapm_update_bits(struct snd_soc_dapm_widget *widget) | |
269 | { | |
270 | int change, power; | |
271 | unsigned short old, new; | |
272 | struct snd_soc_codec *codec = widget->codec; | |
273 | ||
274 | /* check for valid widgets */ | |
275 | if (widget->reg < 0 || widget->id == snd_soc_dapm_input || | |
276 | widget->id == snd_soc_dapm_output || | |
277 | widget->id == snd_soc_dapm_hp || | |
278 | widget->id == snd_soc_dapm_mic || | |
279 | widget->id == snd_soc_dapm_line || | |
280 | widget->id == snd_soc_dapm_spk) | |
281 | return 0; | |
282 | ||
283 | power = widget->power; | |
284 | if (widget->invert) | |
285 | power = (power ? 0:1); | |
286 | ||
287 | old = snd_soc_read(codec, widget->reg); | |
288 | new = (old & ~(0x1 << widget->shift)) | (power << widget->shift); | |
289 | ||
290 | change = old != new; | |
291 | if (change) { | |
12ef193d TK |
292 | pop_dbg(codec->pop_time, "pop test %s : %s in %d ms\n", |
293 | widget->name, widget->power ? "on" : "off", | |
294 | codec->pop_time); | |
2b97eabc | 295 | snd_soc_write(codec, widget->reg, new); |
12ef193d | 296 | pop_wait(codec->pop_time); |
2b97eabc | 297 | } |
c1286b86 MB |
298 | pr_debug("reg %x old %x new %x change %d\n", widget->reg, |
299 | old, new, change); | |
2b97eabc RP |
300 | return change; |
301 | } | |
302 | ||
303 | /* ramps the volume up or down to minimise pops before or after a | |
304 | * DAPM power event */ | |
305 | static int dapm_set_pga(struct snd_soc_dapm_widget *widget, int power) | |
306 | { | |
307 | const struct snd_kcontrol_new *k = widget->kcontrols; | |
308 | ||
309 | if (widget->muted && !power) | |
310 | return 0; | |
311 | if (!widget->muted && power) | |
312 | return 0; | |
313 | ||
314 | if (widget->num_kcontrols && k) { | |
4eaa9819 JS |
315 | struct soc_mixer_control *mc = |
316 | (struct soc_mixer_control *)k->private_value; | |
815ecf8d JS |
317 | unsigned int reg = mc->reg; |
318 | unsigned int shift = mc->shift; | |
4eaa9819 | 319 | int max = mc->max; |
815ecf8d JS |
320 | unsigned int mask = (1 << fls(max)) - 1; |
321 | unsigned int invert = mc->invert; | |
2b97eabc RP |
322 | |
323 | if (power) { | |
324 | int i; | |
325 | /* power up has happended, increase volume to last level */ | |
326 | if (invert) { | |
4eaa9819 | 327 | for (i = max; i > widget->saved_value; i--) |
2b97eabc RP |
328 | snd_soc_update_bits(widget->codec, reg, mask, i); |
329 | } else { | |
330 | for (i = 0; i < widget->saved_value; i++) | |
331 | snd_soc_update_bits(widget->codec, reg, mask, i); | |
332 | } | |
333 | widget->muted = 0; | |
334 | } else { | |
335 | /* power down is about to occur, decrease volume to mute */ | |
336 | int val = snd_soc_read(widget->codec, reg); | |
337 | int i = widget->saved_value = (val >> shift) & mask; | |
338 | if (invert) { | |
339 | for (; i < mask; i++) | |
340 | snd_soc_update_bits(widget->codec, reg, mask, i); | |
341 | } else { | |
342 | for (; i > 0; i--) | |
343 | snd_soc_update_bits(widget->codec, reg, mask, i); | |
344 | } | |
345 | widget->muted = 1; | |
346 | } | |
347 | } | |
348 | return 0; | |
349 | } | |
350 | ||
351 | /* create new dapm mixer control */ | |
352 | static int dapm_new_mixer(struct snd_soc_codec *codec, | |
353 | struct snd_soc_dapm_widget *w) | |
354 | { | |
355 | int i, ret = 0; | |
219b93f5 | 356 | size_t name_len; |
2b97eabc RP |
357 | struct snd_soc_dapm_path *path; |
358 | ||
359 | /* add kcontrol */ | |
360 | for (i = 0; i < w->num_kcontrols; i++) { | |
361 | ||
362 | /* match name */ | |
363 | list_for_each_entry(path, &w->sources, list_sink) { | |
364 | ||
365 | /* mixer/mux paths name must match control name */ | |
366 | if (path->name != (char*)w->kcontrols[i].name) | |
367 | continue; | |
368 | ||
ca9c1aae IM |
369 | /* add dapm control with long name. |
370 | * for dapm_mixer this is the concatenation of the | |
371 | * mixer and kcontrol name. | |
372 | * for dapm_mixer_named_ctl this is simply the | |
373 | * kcontrol name. | |
374 | */ | |
375 | name_len = strlen(w->kcontrols[i].name) + 1; | |
07495f3e | 376 | if (w->id != snd_soc_dapm_mixer_named_ctl) |
ca9c1aae IM |
377 | name_len += 1 + strlen(w->name); |
378 | ||
219b93f5 | 379 | path->long_name = kmalloc(name_len, GFP_KERNEL); |
ca9c1aae | 380 | |
2b97eabc RP |
381 | if (path->long_name == NULL) |
382 | return -ENOMEM; | |
383 | ||
ca9c1aae | 384 | switch (w->id) { |
ca9c1aae IM |
385 | default: |
386 | snprintf(path->long_name, name_len, "%s %s", | |
387 | w->name, w->kcontrols[i].name); | |
07495f3e | 388 | break; |
ca9c1aae IM |
389 | case snd_soc_dapm_mixer_named_ctl: |
390 | snprintf(path->long_name, name_len, "%s", | |
391 | w->kcontrols[i].name); | |
07495f3e | 392 | break; |
ca9c1aae IM |
393 | } |
394 | ||
219b93f5 MB |
395 | path->long_name[name_len - 1] = '\0'; |
396 | ||
2b97eabc RP |
397 | path->kcontrol = snd_soc_cnew(&w->kcontrols[i], w, |
398 | path->long_name); | |
399 | ret = snd_ctl_add(codec->card, path->kcontrol); | |
400 | if (ret < 0) { | |
6553e192 MB |
401 | printk(KERN_ERR "asoc: failed to add dapm kcontrol %s: %d\n", |
402 | path->long_name, | |
403 | ret); | |
2b97eabc RP |
404 | kfree(path->long_name); |
405 | path->long_name = NULL; | |
406 | return ret; | |
407 | } | |
408 | } | |
409 | } | |
410 | return ret; | |
411 | } | |
412 | ||
413 | /* create new dapm mux control */ | |
414 | static int dapm_new_mux(struct snd_soc_codec *codec, | |
415 | struct snd_soc_dapm_widget *w) | |
416 | { | |
417 | struct snd_soc_dapm_path *path = NULL; | |
418 | struct snd_kcontrol *kcontrol; | |
419 | int ret = 0; | |
420 | ||
421 | if (!w->num_kcontrols) { | |
422 | printk(KERN_ERR "asoc: mux %s has no controls\n", w->name); | |
423 | return -EINVAL; | |
424 | } | |
425 | ||
426 | kcontrol = snd_soc_cnew(&w->kcontrols[0], w, w->name); | |
427 | ret = snd_ctl_add(codec->card, kcontrol); | |
428 | if (ret < 0) | |
429 | goto err; | |
430 | ||
431 | list_for_each_entry(path, &w->sources, list_sink) | |
432 | path->kcontrol = kcontrol; | |
433 | ||
434 | return ret; | |
435 | ||
436 | err: | |
437 | printk(KERN_ERR "asoc: failed to add kcontrol %s\n", w->name); | |
438 | return ret; | |
439 | } | |
440 | ||
441 | /* create new dapm volume control */ | |
442 | static int dapm_new_pga(struct snd_soc_codec *codec, | |
443 | struct snd_soc_dapm_widget *w) | |
444 | { | |
445 | struct snd_kcontrol *kcontrol; | |
446 | int ret = 0; | |
447 | ||
448 | if (!w->num_kcontrols) | |
449 | return -EINVAL; | |
450 | ||
451 | kcontrol = snd_soc_cnew(&w->kcontrols[0], w, w->name); | |
452 | ret = snd_ctl_add(codec->card, kcontrol); | |
453 | if (ret < 0) { | |
454 | printk(KERN_ERR "asoc: failed to add kcontrol %s\n", w->name); | |
455 | return ret; | |
456 | } | |
457 | ||
458 | return ret; | |
459 | } | |
460 | ||
461 | /* reset 'walked' bit for each dapm path */ | |
462 | static inline void dapm_clear_walk(struct snd_soc_codec *codec) | |
463 | { | |
464 | struct snd_soc_dapm_path *p; | |
465 | ||
466 | list_for_each_entry(p, &codec->dapm_paths, list) | |
467 | p->walked = 0; | |
468 | } | |
469 | ||
470 | /* | |
471 | * Recursively check for a completed path to an active or physically connected | |
472 | * output widget. Returns number of complete paths. | |
473 | */ | |
474 | static int is_connected_output_ep(struct snd_soc_dapm_widget *widget) | |
475 | { | |
476 | struct snd_soc_dapm_path *path; | |
477 | int con = 0; | |
478 | ||
246d0a17 MB |
479 | if (widget->id == snd_soc_dapm_supply) |
480 | return 0; | |
481 | ||
2b97eabc RP |
482 | if (widget->id == snd_soc_dapm_adc && widget->active) |
483 | return 1; | |
484 | ||
485 | if (widget->connected) { | |
486 | /* connected pin ? */ | |
487 | if (widget->id == snd_soc_dapm_output && !widget->ext) | |
488 | return 1; | |
489 | ||
490 | /* connected jack or spk ? */ | |
491 | if (widget->id == snd_soc_dapm_hp || widget->id == snd_soc_dapm_spk || | |
492 | widget->id == snd_soc_dapm_line) | |
493 | return 1; | |
494 | } | |
495 | ||
496 | list_for_each_entry(path, &widget->sinks, list_source) { | |
497 | if (path->walked) | |
498 | continue; | |
499 | ||
500 | if (path->sink && path->connect) { | |
501 | path->walked = 1; | |
502 | con += is_connected_output_ep(path->sink); | |
503 | } | |
504 | } | |
505 | ||
506 | return con; | |
507 | } | |
508 | ||
509 | /* | |
510 | * Recursively check for a completed path to an active or physically connected | |
511 | * input widget. Returns number of complete paths. | |
512 | */ | |
513 | static int is_connected_input_ep(struct snd_soc_dapm_widget *widget) | |
514 | { | |
515 | struct snd_soc_dapm_path *path; | |
516 | int con = 0; | |
517 | ||
246d0a17 MB |
518 | if (widget->id == snd_soc_dapm_supply) |
519 | return 0; | |
520 | ||
2b97eabc RP |
521 | /* active stream ? */ |
522 | if (widget->id == snd_soc_dapm_dac && widget->active) | |
523 | return 1; | |
524 | ||
525 | if (widget->connected) { | |
526 | /* connected pin ? */ | |
527 | if (widget->id == snd_soc_dapm_input && !widget->ext) | |
528 | return 1; | |
529 | ||
530 | /* connected VMID/Bias for lower pops */ | |
531 | if (widget->id == snd_soc_dapm_vmid) | |
532 | return 1; | |
533 | ||
534 | /* connected jack ? */ | |
535 | if (widget->id == snd_soc_dapm_mic || widget->id == snd_soc_dapm_line) | |
536 | return 1; | |
537 | } | |
538 | ||
539 | list_for_each_entry(path, &widget->sources, list_sink) { | |
540 | if (path->walked) | |
541 | continue; | |
542 | ||
543 | if (path->source && path->connect) { | |
544 | path->walked = 1; | |
545 | con += is_connected_input_ep(path->source); | |
546 | } | |
547 | } | |
548 | ||
549 | return con; | |
550 | } | |
551 | ||
e2be2ccf JN |
552 | /* |
553 | * Handler for generic register modifier widget. | |
554 | */ | |
555 | int dapm_reg_event(struct snd_soc_dapm_widget *w, | |
556 | struct snd_kcontrol *kcontrol, int event) | |
557 | { | |
558 | unsigned int val; | |
559 | ||
560 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
561 | val = w->on_val; | |
562 | else | |
563 | val = w->off_val; | |
564 | ||
565 | snd_soc_update_bits(w->codec, -(w->reg + 1), | |
566 | w->mask << w->shift, val << w->shift); | |
567 | ||
568 | return 0; | |
569 | } | |
11589418 | 570 | EXPORT_SYMBOL_GPL(dapm_reg_event); |
e2be2ccf | 571 | |
025756ec MB |
572 | /* Standard power change method, used to apply power changes to most |
573 | * widgets. | |
574 | */ | |
575 | static int dapm_generic_apply_power(struct snd_soc_dapm_widget *w) | |
576 | { | |
577 | int ret; | |
578 | ||
579 | /* call any power change event handlers */ | |
580 | if (w->event) | |
581 | pr_debug("power %s event for %s flags %x\n", | |
582 | w->power ? "on" : "off", | |
583 | w->name, w->event_flags); | |
584 | ||
585 | /* power up pre event */ | |
586 | if (w->power && w->event && | |
587 | (w->event_flags & SND_SOC_DAPM_PRE_PMU)) { | |
588 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMU); | |
589 | if (ret < 0) | |
590 | return ret; | |
591 | } | |
592 | ||
593 | /* power down pre event */ | |
594 | if (!w->power && w->event && | |
595 | (w->event_flags & SND_SOC_DAPM_PRE_PMD)) { | |
596 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMD); | |
597 | if (ret < 0) | |
598 | return ret; | |
599 | } | |
600 | ||
601 | /* Lower PGA volume to reduce pops */ | |
602 | if (w->id == snd_soc_dapm_pga && !w->power) | |
603 | dapm_set_pga(w, w->power); | |
604 | ||
605 | dapm_update_bits(w); | |
606 | ||
607 | /* Raise PGA volume to reduce pops */ | |
608 | if (w->id == snd_soc_dapm_pga && w->power) | |
609 | dapm_set_pga(w, w->power); | |
610 | ||
611 | /* power up post event */ | |
612 | if (w->power && w->event && | |
613 | (w->event_flags & SND_SOC_DAPM_POST_PMU)) { | |
614 | ret = w->event(w, | |
615 | NULL, SND_SOC_DAPM_POST_PMU); | |
616 | if (ret < 0) | |
617 | return ret; | |
618 | } | |
619 | ||
620 | /* power down post event */ | |
621 | if (!w->power && w->event && | |
622 | (w->event_flags & SND_SOC_DAPM_POST_PMD)) { | |
623 | ret = w->event(w, NULL, SND_SOC_DAPM_POST_PMD); | |
624 | if (ret < 0) | |
625 | return ret; | |
626 | } | |
627 | ||
628 | return 0; | |
629 | } | |
630 | ||
cd0f2d47 MB |
631 | /* Generic check to see if a widget should be powered. |
632 | */ | |
633 | static int dapm_generic_check_power(struct snd_soc_dapm_widget *w) | |
634 | { | |
635 | int in, out; | |
636 | ||
637 | in = is_connected_input_ep(w); | |
638 | dapm_clear_walk(w->codec); | |
639 | out = is_connected_output_ep(w); | |
640 | dapm_clear_walk(w->codec); | |
641 | return out != 0 && in != 0; | |
642 | } | |
643 | ||
6ea31b9f MB |
644 | /* Check to see if an ADC has power */ |
645 | static int dapm_adc_check_power(struct snd_soc_dapm_widget *w) | |
646 | { | |
647 | int in; | |
648 | ||
649 | if (w->active) { | |
650 | in = is_connected_input_ep(w); | |
651 | dapm_clear_walk(w->codec); | |
652 | return in != 0; | |
653 | } else { | |
654 | return dapm_generic_check_power(w); | |
655 | } | |
656 | } | |
657 | ||
658 | /* Check to see if a DAC has power */ | |
659 | static int dapm_dac_check_power(struct snd_soc_dapm_widget *w) | |
660 | { | |
661 | int out; | |
662 | ||
663 | if (w->active) { | |
664 | out = is_connected_output_ep(w); | |
665 | dapm_clear_walk(w->codec); | |
666 | return out != 0; | |
667 | } else { | |
668 | return dapm_generic_check_power(w); | |
669 | } | |
670 | } | |
671 | ||
246d0a17 MB |
672 | /* Check to see if a power supply is needed */ |
673 | static int dapm_supply_check_power(struct snd_soc_dapm_widget *w) | |
674 | { | |
675 | struct snd_soc_dapm_path *path; | |
676 | int power = 0; | |
677 | ||
678 | /* Check if one of our outputs is connected */ | |
679 | list_for_each_entry(path, &w->sinks, list_source) { | |
680 | if (path->sink && path->sink->power_check && | |
681 | path->sink->power_check(path->sink)) { | |
682 | power = 1; | |
683 | break; | |
684 | } | |
685 | } | |
686 | ||
687 | dapm_clear_walk(w->codec); | |
688 | ||
689 | return power; | |
690 | } | |
691 | ||
42aa3418 MB |
692 | /* |
693 | * Scan a single DAPM widget for a complete audio path and update the | |
694 | * power status appropriately. | |
695 | */ | |
696 | static int dapm_power_widget(struct snd_soc_codec *codec, int event, | |
697 | struct snd_soc_dapm_widget *w) | |
698 | { | |
6d3ddc81 | 699 | int ret; |
42aa3418 | 700 | |
6ea31b9f | 701 | switch (w->id) { |
6ea31b9f | 702 | case snd_soc_dapm_pre: |
42aa3418 MB |
703 | if (!w->event) |
704 | return 0; | |
705 | ||
706 | if (event == SND_SOC_DAPM_STREAM_START) { | |
707 | ret = w->event(w, | |
708 | NULL, SND_SOC_DAPM_PRE_PMU); | |
709 | if (ret < 0) | |
710 | return ret; | |
711 | } else if (event == SND_SOC_DAPM_STREAM_STOP) { | |
712 | ret = w->event(w, | |
713 | NULL, SND_SOC_DAPM_PRE_PMD); | |
714 | if (ret < 0) | |
715 | return ret; | |
716 | } | |
717 | return 0; | |
6ea31b9f MB |
718 | |
719 | case snd_soc_dapm_post: | |
42aa3418 MB |
720 | if (!w->event) |
721 | return 0; | |
722 | ||
723 | if (event == SND_SOC_DAPM_STREAM_START) { | |
724 | ret = w->event(w, | |
725 | NULL, SND_SOC_DAPM_POST_PMU); | |
726 | if (ret < 0) | |
727 | return ret; | |
728 | } else if (event == SND_SOC_DAPM_STREAM_STOP) { | |
729 | ret = w->event(w, | |
730 | NULL, SND_SOC_DAPM_POST_PMD); | |
731 | if (ret < 0) | |
732 | return ret; | |
733 | } | |
734 | return 0; | |
42aa3418 | 735 | |
6ea31b9f | 736 | default: |
6d3ddc81 | 737 | return dapm_generic_apply_power(w); |
6ea31b9f | 738 | } |
42aa3418 MB |
739 | } |
740 | ||
2b97eabc RP |
741 | /* |
742 | * Scan each dapm widget for complete audio path. | |
743 | * A complete path is a route that has valid endpoints i.e.:- | |
744 | * | |
745 | * o DAC to output pin. | |
746 | * o Input Pin to ADC. | |
747 | * o Input pin to Output pin (bypass, sidetone) | |
748 | * o DAC to ADC (loopback). | |
749 | */ | |
d9c96cf3 | 750 | static int dapm_power_widgets(struct snd_soc_codec *codec, int event) |
2b97eabc | 751 | { |
452c5eaa | 752 | struct snd_soc_device *socdev = codec->socdev; |
2b97eabc | 753 | struct snd_soc_dapm_widget *w; |
6d3ddc81 MB |
754 | int ret = 0; |
755 | int i, power; | |
452c5eaa | 756 | int sys_power = 0; |
6d3ddc81 MB |
757 | |
758 | INIT_LIST_HEAD(&codec->up_list); | |
759 | INIT_LIST_HEAD(&codec->down_list); | |
760 | ||
761 | /* Check which widgets we need to power and store them in | |
762 | * lists indicating if they should be powered up or down. | |
763 | */ | |
764 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
765 | switch (w->id) { | |
766 | case snd_soc_dapm_pre: | |
767 | list_add_tail(&codec->down_list, &w->power_list); | |
768 | break; | |
769 | case snd_soc_dapm_post: | |
770 | list_add_tail(&codec->up_list, &w->power_list); | |
771 | break; | |
772 | ||
773 | default: | |
774 | if (!w->power_check) | |
775 | continue; | |
776 | ||
777 | power = w->power_check(w); | |
452c5eaa MB |
778 | if (power) |
779 | sys_power = 1; | |
780 | ||
6d3ddc81 MB |
781 | if (w->power == power) |
782 | continue; | |
783 | ||
784 | if (power) | |
785 | list_add_tail(&w->power_list, &codec->up_list); | |
786 | else | |
787 | list_add_tail(&w->power_list, | |
788 | &codec->down_list); | |
789 | ||
790 | w->power = power; | |
791 | break; | |
792 | } | |
2b97eabc RP |
793 | } |
794 | ||
452c5eaa MB |
795 | /* If we're changing to all on or all off then prepare */ |
796 | if ((sys_power && codec->bias_level == SND_SOC_BIAS_STANDBY) || | |
797 | (!sys_power && codec->bias_level == SND_SOC_BIAS_ON)) { | |
798 | ret = snd_soc_dapm_set_bias_level(socdev, | |
799 | SND_SOC_BIAS_PREPARE); | |
800 | if (ret != 0) | |
801 | pr_err("Failed to prepare bias: %d\n", ret); | |
802 | } | |
803 | ||
6d3ddc81 MB |
804 | /* Power down widgets first; try to avoid amplifying pops. */ |
805 | for (i = 0; i < ARRAY_SIZE(dapm_down_seq); i++) { | |
806 | list_for_each_entry(w, &codec->down_list, power_list) { | |
807 | /* is widget in stream order */ | |
808 | if (w->id != dapm_down_seq[i]) | |
809 | continue; | |
810 | ||
811 | ret = dapm_power_widget(codec, event, w); | |
812 | if (ret != 0) | |
813 | pr_err("Failed to power down %s: %d\n", | |
814 | w->name, ret); | |
815 | } | |
816 | } | |
2b97eabc | 817 | |
6d3ddc81 MB |
818 | /* Now power up. */ |
819 | for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++) { | |
820 | list_for_each_entry(w, &codec->up_list, power_list) { | |
2b97eabc | 821 | /* is widget in stream order */ |
6d3ddc81 | 822 | if (w->id != dapm_up_seq[i]) |
2b97eabc RP |
823 | continue; |
824 | ||
42aa3418 MB |
825 | ret = dapm_power_widget(codec, event, w); |
826 | if (ret != 0) | |
6d3ddc81 MB |
827 | pr_err("Failed to power up %s: %d\n", |
828 | w->name, ret); | |
2b97eabc RP |
829 | } |
830 | } | |
831 | ||
452c5eaa MB |
832 | /* If we just powered the last thing off drop to standby bias */ |
833 | if (codec->bias_level == SND_SOC_BIAS_PREPARE && !sys_power) { | |
834 | ret = snd_soc_dapm_set_bias_level(socdev, | |
835 | SND_SOC_BIAS_STANDBY); | |
836 | if (ret != 0) | |
837 | pr_err("Failed to apply standby bias: %d\n", ret); | |
838 | } | |
839 | ||
840 | /* If we just powered up then move to active bias */ | |
841 | if (codec->bias_level == SND_SOC_BIAS_PREPARE && sys_power) { | |
842 | ret = snd_soc_dapm_set_bias_level(socdev, | |
843 | SND_SOC_BIAS_ON); | |
844 | if (ret != 0) | |
845 | pr_err("Failed to apply active bias: %d\n", ret); | |
846 | } | |
847 | ||
42aa3418 | 848 | return 0; |
2b97eabc RP |
849 | } |
850 | ||
c1286b86 | 851 | #ifdef DEBUG |
2b97eabc RP |
852 | static void dbg_dump_dapm(struct snd_soc_codec* codec, const char *action) |
853 | { | |
854 | struct snd_soc_dapm_widget *w; | |
855 | struct snd_soc_dapm_path *p = NULL; | |
856 | int in, out; | |
857 | ||
858 | printk("DAPM %s %s\n", codec->name, action); | |
859 | ||
860 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
861 | ||
862 | /* only display widgets that effect routing */ | |
863 | switch (w->id) { | |
864 | case snd_soc_dapm_pre: | |
865 | case snd_soc_dapm_post: | |
866 | case snd_soc_dapm_vmid: | |
867 | continue; | |
868 | case snd_soc_dapm_mux: | |
2e72f8e3 | 869 | case snd_soc_dapm_value_mux: |
2b97eabc RP |
870 | case snd_soc_dapm_output: |
871 | case snd_soc_dapm_input: | |
872 | case snd_soc_dapm_switch: | |
873 | case snd_soc_dapm_hp: | |
874 | case snd_soc_dapm_mic: | |
875 | case snd_soc_dapm_spk: | |
876 | case snd_soc_dapm_line: | |
877 | case snd_soc_dapm_micbias: | |
878 | case snd_soc_dapm_dac: | |
879 | case snd_soc_dapm_adc: | |
880 | case snd_soc_dapm_pga: | |
881 | case snd_soc_dapm_mixer: | |
ca9c1aae | 882 | case snd_soc_dapm_mixer_named_ctl: |
246d0a17 | 883 | case snd_soc_dapm_supply: |
2b97eabc RP |
884 | if (w->name) { |
885 | in = is_connected_input_ep(w); | |
886 | dapm_clear_walk(w->codec); | |
887 | out = is_connected_output_ep(w); | |
888 | dapm_clear_walk(w->codec); | |
889 | printk("%s: %s in %d out %d\n", w->name, | |
890 | w->power ? "On":"Off",in, out); | |
891 | ||
892 | list_for_each_entry(p, &w->sources, list_sink) { | |
893 | if (p->connect) | |
894 | printk(" in %s %s\n", p->name ? p->name : "static", | |
895 | p->source->name); | |
896 | } | |
897 | list_for_each_entry(p, &w->sinks, list_source) { | |
2b97eabc RP |
898 | if (p->connect) |
899 | printk(" out %s %s\n", p->name ? p->name : "static", | |
900 | p->sink->name); | |
901 | } | |
902 | } | |
903 | break; | |
904 | } | |
905 | } | |
906 | } | |
907 | #endif | |
908 | ||
909 | /* test and update the power status of a mux widget */ | |
d9c96cf3 AB |
910 | static int dapm_mux_update_power(struct snd_soc_dapm_widget *widget, |
911 | struct snd_kcontrol *kcontrol, int mask, | |
cb01e2b9 | 912 | int mux, int val, struct soc_enum *e) |
2b97eabc RP |
913 | { |
914 | struct snd_soc_dapm_path *path; | |
915 | int found = 0; | |
916 | ||
eff317d0 PU |
917 | if (widget->id != snd_soc_dapm_mux && |
918 | widget->id != snd_soc_dapm_value_mux) | |
2b97eabc RP |
919 | return -ENODEV; |
920 | ||
921 | if (!snd_soc_test_bits(widget->codec, e->reg, mask, val)) | |
922 | return 0; | |
923 | ||
924 | /* find dapm widget path assoc with kcontrol */ | |
925 | list_for_each_entry(path, &widget->codec->dapm_paths, list) { | |
926 | if (path->kcontrol != kcontrol) | |
927 | continue; | |
928 | ||
cb01e2b9 | 929 | if (!path->name || !e->texts[mux]) |
2b97eabc RP |
930 | continue; |
931 | ||
932 | found = 1; | |
933 | /* we now need to match the string in the enum to the path */ | |
cb01e2b9 | 934 | if (!(strcmp(path->name, e->texts[mux]))) |
2b97eabc RP |
935 | path->connect = 1; /* new connection */ |
936 | else | |
937 | path->connect = 0; /* old connection must be powered down */ | |
938 | } | |
939 | ||
3fccd8b1 | 940 | if (found) { |
2b97eabc | 941 | dapm_power_widgets(widget->codec, SND_SOC_DAPM_STREAM_NOP); |
3fccd8b1 MB |
942 | dump_dapm(widget->codec, "mux power update"); |
943 | } | |
2b97eabc RP |
944 | |
945 | return 0; | |
946 | } | |
2b97eabc | 947 | |
1b075e3f | 948 | /* test and update the power status of a mixer or switch widget */ |
d9c96cf3 AB |
949 | static int dapm_mixer_update_power(struct snd_soc_dapm_widget *widget, |
950 | struct snd_kcontrol *kcontrol, int reg, | |
951 | int val_mask, int val, int invert) | |
2b97eabc RP |
952 | { |
953 | struct snd_soc_dapm_path *path; | |
954 | int found = 0; | |
955 | ||
1b075e3f | 956 | if (widget->id != snd_soc_dapm_mixer && |
ca9c1aae | 957 | widget->id != snd_soc_dapm_mixer_named_ctl && |
1b075e3f | 958 | widget->id != snd_soc_dapm_switch) |
2b97eabc RP |
959 | return -ENODEV; |
960 | ||
961 | if (!snd_soc_test_bits(widget->codec, reg, val_mask, val)) | |
962 | return 0; | |
963 | ||
964 | /* find dapm widget path assoc with kcontrol */ | |
965 | list_for_each_entry(path, &widget->codec->dapm_paths, list) { | |
966 | if (path->kcontrol != kcontrol) | |
967 | continue; | |
968 | ||
969 | /* found, now check type */ | |
970 | found = 1; | |
971 | if (val) | |
972 | /* new connection */ | |
973 | path->connect = invert ? 0:1; | |
974 | else | |
975 | /* old connection must be powered down */ | |
976 | path->connect = invert ? 1:0; | |
977 | break; | |
978 | } | |
979 | ||
3fccd8b1 | 980 | if (found) { |
2b97eabc | 981 | dapm_power_widgets(widget->codec, SND_SOC_DAPM_STREAM_NOP); |
3fccd8b1 MB |
982 | dump_dapm(widget->codec, "mixer power update"); |
983 | } | |
2b97eabc RP |
984 | |
985 | return 0; | |
986 | } | |
2b97eabc RP |
987 | |
988 | /* show dapm widget status in sys fs */ | |
989 | static ssize_t dapm_widget_show(struct device *dev, | |
990 | struct device_attribute *attr, char *buf) | |
991 | { | |
992 | struct snd_soc_device *devdata = dev_get_drvdata(dev); | |
6627a653 | 993 | struct snd_soc_codec *codec = devdata->card->codec; |
2b97eabc RP |
994 | struct snd_soc_dapm_widget *w; |
995 | int count = 0; | |
996 | char *state = "not set"; | |
997 | ||
998 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
999 | ||
1000 | /* only display widgets that burnm power */ | |
1001 | switch (w->id) { | |
1002 | case snd_soc_dapm_hp: | |
1003 | case snd_soc_dapm_mic: | |
1004 | case snd_soc_dapm_spk: | |
1005 | case snd_soc_dapm_line: | |
1006 | case snd_soc_dapm_micbias: | |
1007 | case snd_soc_dapm_dac: | |
1008 | case snd_soc_dapm_adc: | |
1009 | case snd_soc_dapm_pga: | |
1010 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1011 | case snd_soc_dapm_mixer_named_ctl: |
246d0a17 | 1012 | case snd_soc_dapm_supply: |
2b97eabc RP |
1013 | if (w->name) |
1014 | count += sprintf(buf + count, "%s: %s\n", | |
1015 | w->name, w->power ? "On":"Off"); | |
1016 | break; | |
1017 | default: | |
1018 | break; | |
1019 | } | |
1020 | } | |
1021 | ||
0be9898a MB |
1022 | switch (codec->bias_level) { |
1023 | case SND_SOC_BIAS_ON: | |
1024 | state = "On"; | |
2b97eabc | 1025 | break; |
0be9898a MB |
1026 | case SND_SOC_BIAS_PREPARE: |
1027 | state = "Prepare"; | |
2b97eabc | 1028 | break; |
0be9898a MB |
1029 | case SND_SOC_BIAS_STANDBY: |
1030 | state = "Standby"; | |
2b97eabc | 1031 | break; |
0be9898a MB |
1032 | case SND_SOC_BIAS_OFF: |
1033 | state = "Off"; | |
2b97eabc RP |
1034 | break; |
1035 | } | |
1036 | count += sprintf(buf + count, "PM State: %s\n", state); | |
1037 | ||
1038 | return count; | |
1039 | } | |
1040 | ||
1041 | static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL); | |
1042 | ||
1043 | int snd_soc_dapm_sys_add(struct device *dev) | |
1044 | { | |
12ef193d | 1045 | return device_create_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1046 | } |
1047 | ||
1048 | static void snd_soc_dapm_sys_remove(struct device *dev) | |
1049 | { | |
aef90843 | 1050 | device_remove_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1051 | } |
1052 | ||
1053 | /* free all dapm widgets and resources */ | |
d9c96cf3 | 1054 | static void dapm_free_widgets(struct snd_soc_codec *codec) |
2b97eabc RP |
1055 | { |
1056 | struct snd_soc_dapm_widget *w, *next_w; | |
1057 | struct snd_soc_dapm_path *p, *next_p; | |
1058 | ||
1059 | list_for_each_entry_safe(w, next_w, &codec->dapm_widgets, list) { | |
1060 | list_del(&w->list); | |
1061 | kfree(w); | |
1062 | } | |
1063 | ||
1064 | list_for_each_entry_safe(p, next_p, &codec->dapm_paths, list) { | |
1065 | list_del(&p->list); | |
1066 | kfree(p->long_name); | |
1067 | kfree(p); | |
1068 | } | |
1069 | } | |
1070 | ||
a5302181 | 1071 | static int snd_soc_dapm_set_pin(struct snd_soc_codec *codec, |
1649923d | 1072 | const char *pin, int status) |
a5302181 LG |
1073 | { |
1074 | struct snd_soc_dapm_widget *w; | |
1075 | ||
1076 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
1077 | if (!strcmp(w->name, pin)) { | |
c1286b86 | 1078 | pr_debug("dapm: %s: pin %s\n", codec->name, pin); |
a5302181 LG |
1079 | w->connected = status; |
1080 | return 0; | |
1081 | } | |
1082 | } | |
1083 | ||
c1286b86 | 1084 | pr_err("dapm: %s: configuring unknown pin %s\n", codec->name, pin); |
a5302181 LG |
1085 | return -EINVAL; |
1086 | } | |
1087 | ||
2b97eabc | 1088 | /** |
a5302181 | 1089 | * snd_soc_dapm_sync - scan and power dapm paths |
2b97eabc RP |
1090 | * @codec: audio codec |
1091 | * | |
1092 | * Walks all dapm audio paths and powers widgets according to their | |
1093 | * stream or path usage. | |
1094 | * | |
1095 | * Returns 0 for success. | |
1096 | */ | |
a5302181 | 1097 | int snd_soc_dapm_sync(struct snd_soc_codec *codec) |
2b97eabc | 1098 | { |
3fccd8b1 MB |
1099 | int ret = dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP); |
1100 | dump_dapm(codec, "sync"); | |
1101 | return ret; | |
2b97eabc | 1102 | } |
a5302181 | 1103 | EXPORT_SYMBOL_GPL(snd_soc_dapm_sync); |
2b97eabc | 1104 | |
105f1c28 MB |
1105 | static int snd_soc_dapm_add_route(struct snd_soc_codec *codec, |
1106 | const char *sink, const char *control, const char *source) | |
2b97eabc RP |
1107 | { |
1108 | struct snd_soc_dapm_path *path; | |
1109 | struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w; | |
1110 | int ret = 0; | |
1111 | ||
1112 | /* find src and dest widgets */ | |
1113 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
1114 | ||
1115 | if (!wsink && !(strcmp(w->name, sink))) { | |
1116 | wsink = w; | |
1117 | continue; | |
1118 | } | |
1119 | if (!wsource && !(strcmp(w->name, source))) { | |
1120 | wsource = w; | |
1121 | } | |
1122 | } | |
1123 | ||
1124 | if (wsource == NULL || wsink == NULL) | |
1125 | return -ENODEV; | |
1126 | ||
1127 | path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL); | |
1128 | if (!path) | |
1129 | return -ENOMEM; | |
1130 | ||
1131 | path->source = wsource; | |
1132 | path->sink = wsink; | |
1133 | INIT_LIST_HEAD(&path->list); | |
1134 | INIT_LIST_HEAD(&path->list_source); | |
1135 | INIT_LIST_HEAD(&path->list_sink); | |
1136 | ||
1137 | /* check for external widgets */ | |
1138 | if (wsink->id == snd_soc_dapm_input) { | |
1139 | if (wsource->id == snd_soc_dapm_micbias || | |
1140 | wsource->id == snd_soc_dapm_mic || | |
1e39221e SF |
1141 | wsink->id == snd_soc_dapm_line || |
1142 | wsink->id == snd_soc_dapm_output) | |
2b97eabc RP |
1143 | wsink->ext = 1; |
1144 | } | |
1145 | if (wsource->id == snd_soc_dapm_output) { | |
1146 | if (wsink->id == snd_soc_dapm_spk || | |
1147 | wsink->id == snd_soc_dapm_hp || | |
1e39221e SF |
1148 | wsink->id == snd_soc_dapm_line || |
1149 | wsink->id == snd_soc_dapm_input) | |
2b97eabc RP |
1150 | wsource->ext = 1; |
1151 | } | |
1152 | ||
1153 | /* connect static paths */ | |
1154 | if (control == NULL) { | |
1155 | list_add(&path->list, &codec->dapm_paths); | |
1156 | list_add(&path->list_sink, &wsink->sources); | |
1157 | list_add(&path->list_source, &wsource->sinks); | |
1158 | path->connect = 1; | |
1159 | return 0; | |
1160 | } | |
1161 | ||
1162 | /* connect dynamic paths */ | |
1163 | switch(wsink->id) { | |
1164 | case snd_soc_dapm_adc: | |
1165 | case snd_soc_dapm_dac: | |
1166 | case snd_soc_dapm_pga: | |
1167 | case snd_soc_dapm_input: | |
1168 | case snd_soc_dapm_output: | |
1169 | case snd_soc_dapm_micbias: | |
1170 | case snd_soc_dapm_vmid: | |
1171 | case snd_soc_dapm_pre: | |
1172 | case snd_soc_dapm_post: | |
246d0a17 | 1173 | case snd_soc_dapm_supply: |
2b97eabc RP |
1174 | list_add(&path->list, &codec->dapm_paths); |
1175 | list_add(&path->list_sink, &wsink->sources); | |
1176 | list_add(&path->list_source, &wsource->sinks); | |
1177 | path->connect = 1; | |
1178 | return 0; | |
1179 | case snd_soc_dapm_mux: | |
74155556 | 1180 | case snd_soc_dapm_value_mux: |
2b97eabc RP |
1181 | ret = dapm_connect_mux(codec, wsource, wsink, path, control, |
1182 | &wsink->kcontrols[0]); | |
1183 | if (ret != 0) | |
1184 | goto err; | |
1185 | break; | |
1186 | case snd_soc_dapm_switch: | |
1187 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1188 | case snd_soc_dapm_mixer_named_ctl: |
2b97eabc RP |
1189 | ret = dapm_connect_mixer(codec, wsource, wsink, path, control); |
1190 | if (ret != 0) | |
1191 | goto err; | |
1192 | break; | |
1193 | case snd_soc_dapm_hp: | |
1194 | case snd_soc_dapm_mic: | |
1195 | case snd_soc_dapm_line: | |
1196 | case snd_soc_dapm_spk: | |
1197 | list_add(&path->list, &codec->dapm_paths); | |
1198 | list_add(&path->list_sink, &wsink->sources); | |
1199 | list_add(&path->list_source, &wsource->sinks); | |
1200 | path->connect = 0; | |
1201 | return 0; | |
1202 | } | |
1203 | return 0; | |
1204 | ||
1205 | err: | |
1206 | printk(KERN_WARNING "asoc: no dapm match for %s --> %s --> %s\n", source, | |
1207 | control, sink); | |
1208 | kfree(path); | |
1209 | return ret; | |
1210 | } | |
105f1c28 | 1211 | |
105f1c28 MB |
1212 | /** |
1213 | * snd_soc_dapm_add_routes - Add routes between DAPM widgets | |
1214 | * @codec: codec | |
1215 | * @route: audio routes | |
1216 | * @num: number of routes | |
1217 | * | |
1218 | * Connects 2 dapm widgets together via a named audio path. The sink is | |
1219 | * the widget receiving the audio signal, whilst the source is the sender | |
1220 | * of the audio signal. | |
1221 | * | |
1222 | * Returns 0 for success else error. On error all resources can be freed | |
1223 | * with a call to snd_soc_card_free(). | |
1224 | */ | |
1225 | int snd_soc_dapm_add_routes(struct snd_soc_codec *codec, | |
1226 | const struct snd_soc_dapm_route *route, int num) | |
1227 | { | |
1228 | int i, ret; | |
1229 | ||
1230 | for (i = 0; i < num; i++) { | |
1231 | ret = snd_soc_dapm_add_route(codec, route->sink, | |
1232 | route->control, route->source); | |
1233 | if (ret < 0) { | |
1234 | printk(KERN_ERR "Failed to add route %s->%s\n", | |
1235 | route->source, | |
1236 | route->sink); | |
1237 | return ret; | |
1238 | } | |
1239 | route++; | |
1240 | } | |
1241 | ||
1242 | return 0; | |
1243 | } | |
1244 | EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes); | |
1245 | ||
2b97eabc RP |
1246 | /** |
1247 | * snd_soc_dapm_new_widgets - add new dapm widgets | |
1248 | * @codec: audio codec | |
1249 | * | |
1250 | * Checks the codec for any new dapm widgets and creates them if found. | |
1251 | * | |
1252 | * Returns 0 for success. | |
1253 | */ | |
1254 | int snd_soc_dapm_new_widgets(struct snd_soc_codec *codec) | |
1255 | { | |
1256 | struct snd_soc_dapm_widget *w; | |
1257 | ||
2b97eabc RP |
1258 | list_for_each_entry(w, &codec->dapm_widgets, list) |
1259 | { | |
1260 | if (w->new) | |
1261 | continue; | |
1262 | ||
1263 | switch(w->id) { | |
1264 | case snd_soc_dapm_switch: | |
1265 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1266 | case snd_soc_dapm_mixer_named_ctl: |
b75576d7 | 1267 | w->power_check = dapm_generic_check_power; |
2b97eabc RP |
1268 | dapm_new_mixer(codec, w); |
1269 | break; | |
1270 | case snd_soc_dapm_mux: | |
2e72f8e3 | 1271 | case snd_soc_dapm_value_mux: |
b75576d7 | 1272 | w->power_check = dapm_generic_check_power; |
2b97eabc RP |
1273 | dapm_new_mux(codec, w); |
1274 | break; | |
1275 | case snd_soc_dapm_adc: | |
b75576d7 MB |
1276 | w->power_check = dapm_adc_check_power; |
1277 | break; | |
2b97eabc | 1278 | case snd_soc_dapm_dac: |
b75576d7 MB |
1279 | w->power_check = dapm_dac_check_power; |
1280 | break; | |
2b97eabc | 1281 | case snd_soc_dapm_pga: |
b75576d7 | 1282 | w->power_check = dapm_generic_check_power; |
2b97eabc RP |
1283 | dapm_new_pga(codec, w); |
1284 | break; | |
1285 | case snd_soc_dapm_input: | |
1286 | case snd_soc_dapm_output: | |
1287 | case snd_soc_dapm_micbias: | |
1288 | case snd_soc_dapm_spk: | |
1289 | case snd_soc_dapm_hp: | |
1290 | case snd_soc_dapm_mic: | |
1291 | case snd_soc_dapm_line: | |
b75576d7 MB |
1292 | w->power_check = dapm_generic_check_power; |
1293 | break; | |
246d0a17 MB |
1294 | case snd_soc_dapm_supply: |
1295 | w->power_check = dapm_supply_check_power; | |
2b97eabc RP |
1296 | case snd_soc_dapm_vmid: |
1297 | case snd_soc_dapm_pre: | |
1298 | case snd_soc_dapm_post: | |
1299 | break; | |
1300 | } | |
1301 | w->new = 1; | |
1302 | } | |
1303 | ||
1304 | dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP); | |
2b97eabc RP |
1305 | return 0; |
1306 | } | |
1307 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets); | |
1308 | ||
1309 | /** | |
1310 | * snd_soc_dapm_get_volsw - dapm mixer get callback | |
1311 | * @kcontrol: mixer control | |
ac11a2b3 | 1312 | * @ucontrol: control element information |
2b97eabc RP |
1313 | * |
1314 | * Callback to get the value of a dapm mixer control. | |
1315 | * | |
1316 | * Returns 0 for success. | |
1317 | */ | |
1318 | int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol, | |
1319 | struct snd_ctl_elem_value *ucontrol) | |
1320 | { | |
1321 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
4eaa9819 JS |
1322 | struct soc_mixer_control *mc = |
1323 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
1324 | unsigned int reg = mc->reg; |
1325 | unsigned int shift = mc->shift; | |
1326 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1327 | int max = mc->max; |
815ecf8d JS |
1328 | unsigned int invert = mc->invert; |
1329 | unsigned int mask = (1 << fls(max)) - 1; | |
2b97eabc RP |
1330 | |
1331 | /* return the saved value if we are powered down */ | |
1332 | if (widget->id == snd_soc_dapm_pga && !widget->power) { | |
1333 | ucontrol->value.integer.value[0] = widget->saved_value; | |
1334 | return 0; | |
1335 | } | |
1336 | ||
1337 | ucontrol->value.integer.value[0] = | |
1338 | (snd_soc_read(widget->codec, reg) >> shift) & mask; | |
1339 | if (shift != rshift) | |
1340 | ucontrol->value.integer.value[1] = | |
1341 | (snd_soc_read(widget->codec, reg) >> rshift) & mask; | |
1342 | if (invert) { | |
1343 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1344 | max - ucontrol->value.integer.value[0]; |
2b97eabc RP |
1345 | if (shift != rshift) |
1346 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 1347 | max - ucontrol->value.integer.value[1]; |
2b97eabc RP |
1348 | } |
1349 | ||
1350 | return 0; | |
1351 | } | |
1352 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw); | |
1353 | ||
1354 | /** | |
1355 | * snd_soc_dapm_put_volsw - dapm mixer set callback | |
1356 | * @kcontrol: mixer control | |
ac11a2b3 | 1357 | * @ucontrol: control element information |
2b97eabc RP |
1358 | * |
1359 | * Callback to set the value of a dapm mixer control. | |
1360 | * | |
1361 | * Returns 0 for success. | |
1362 | */ | |
1363 | int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, | |
1364 | struct snd_ctl_elem_value *ucontrol) | |
1365 | { | |
1366 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
4eaa9819 JS |
1367 | struct soc_mixer_control *mc = |
1368 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
1369 | unsigned int reg = mc->reg; |
1370 | unsigned int shift = mc->shift; | |
1371 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1372 | int max = mc->max; |
815ecf8d JS |
1373 | unsigned int mask = (1 << fls(max)) - 1; |
1374 | unsigned int invert = mc->invert; | |
2b97eabc RP |
1375 | unsigned short val, val2, val_mask; |
1376 | int ret; | |
1377 | ||
1378 | val = (ucontrol->value.integer.value[0] & mask); | |
1379 | ||
1380 | if (invert) | |
a7a4ac86 | 1381 | val = max - val; |
2b97eabc RP |
1382 | val_mask = mask << shift; |
1383 | val = val << shift; | |
1384 | if (shift != rshift) { | |
1385 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1386 | if (invert) | |
a7a4ac86 | 1387 | val2 = max - val2; |
2b97eabc RP |
1388 | val_mask |= mask << rshift; |
1389 | val |= val2 << rshift; | |
1390 | } | |
1391 | ||
1392 | mutex_lock(&widget->codec->mutex); | |
1393 | widget->value = val; | |
1394 | ||
1395 | /* save volume value if the widget is powered down */ | |
1396 | if (widget->id == snd_soc_dapm_pga && !widget->power) { | |
1397 | widget->saved_value = val; | |
1398 | mutex_unlock(&widget->codec->mutex); | |
1399 | return 1; | |
1400 | } | |
1401 | ||
1402 | dapm_mixer_update_power(widget, kcontrol, reg, val_mask, val, invert); | |
1403 | if (widget->event) { | |
1404 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
9af6d956 LG |
1405 | ret = widget->event(widget, kcontrol, |
1406 | SND_SOC_DAPM_PRE_REG); | |
1407 | if (ret < 0) { | |
1408 | ret = 1; | |
2b97eabc | 1409 | goto out; |
9af6d956 | 1410 | } |
2b97eabc RP |
1411 | } |
1412 | ret = snd_soc_update_bits(widget->codec, reg, val_mask, val); | |
1413 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
9af6d956 LG |
1414 | ret = widget->event(widget, kcontrol, |
1415 | SND_SOC_DAPM_POST_REG); | |
2b97eabc RP |
1416 | } else |
1417 | ret = snd_soc_update_bits(widget->codec, reg, val_mask, val); | |
1418 | ||
1419 | out: | |
1420 | mutex_unlock(&widget->codec->mutex); | |
1421 | return ret; | |
1422 | } | |
1423 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw); | |
1424 | ||
1425 | /** | |
1426 | * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback | |
1427 | * @kcontrol: mixer control | |
ac11a2b3 | 1428 | * @ucontrol: control element information |
2b97eabc RP |
1429 | * |
1430 | * Callback to get the value of a dapm enumerated double mixer control. | |
1431 | * | |
1432 | * Returns 0 for success. | |
1433 | */ | |
1434 | int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol, | |
1435 | struct snd_ctl_elem_value *ucontrol) | |
1436 | { | |
1437 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1438 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1439 | unsigned short val, bitmask; | |
1440 | ||
f8ba0b7b | 1441 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
1442 | ; |
1443 | val = snd_soc_read(widget->codec, e->reg); | |
1444 | ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1); | |
1445 | if (e->shift_l != e->shift_r) | |
1446 | ucontrol->value.enumerated.item[1] = | |
1447 | (val >> e->shift_r) & (bitmask - 1); | |
1448 | ||
1449 | return 0; | |
1450 | } | |
1451 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double); | |
1452 | ||
1453 | /** | |
1454 | * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback | |
1455 | * @kcontrol: mixer control | |
ac11a2b3 | 1456 | * @ucontrol: control element information |
2b97eabc RP |
1457 | * |
1458 | * Callback to set the value of a dapm enumerated double mixer control. | |
1459 | * | |
1460 | * Returns 0 for success. | |
1461 | */ | |
1462 | int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, | |
1463 | struct snd_ctl_elem_value *ucontrol) | |
1464 | { | |
1465 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1466 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1467 | unsigned short val, mux; | |
1468 | unsigned short mask, bitmask; | |
1469 | int ret = 0; | |
1470 | ||
f8ba0b7b | 1471 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc | 1472 | ; |
f8ba0b7b | 1473 | if (ucontrol->value.enumerated.item[0] > e->max - 1) |
2b97eabc RP |
1474 | return -EINVAL; |
1475 | mux = ucontrol->value.enumerated.item[0]; | |
1476 | val = mux << e->shift_l; | |
1477 | mask = (bitmask - 1) << e->shift_l; | |
1478 | if (e->shift_l != e->shift_r) { | |
f8ba0b7b | 1479 | if (ucontrol->value.enumerated.item[1] > e->max - 1) |
2b97eabc RP |
1480 | return -EINVAL; |
1481 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
1482 | mask |= (bitmask - 1) << e->shift_r; | |
1483 | } | |
1484 | ||
1485 | mutex_lock(&widget->codec->mutex); | |
1486 | widget->value = val; | |
cb01e2b9 | 1487 | dapm_mux_update_power(widget, kcontrol, mask, mux, val, e); |
2b97eabc RP |
1488 | if (widget->event) { |
1489 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
9af6d956 LG |
1490 | ret = widget->event(widget, |
1491 | kcontrol, SND_SOC_DAPM_PRE_REG); | |
2b97eabc RP |
1492 | if (ret < 0) |
1493 | goto out; | |
1494 | } | |
1495 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1496 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
9af6d956 LG |
1497 | ret = widget->event(widget, |
1498 | kcontrol, SND_SOC_DAPM_POST_REG); | |
2b97eabc RP |
1499 | } else |
1500 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1501 | ||
1502 | out: | |
1503 | mutex_unlock(&widget->codec->mutex); | |
1504 | return ret; | |
1505 | } | |
1506 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double); | |
1507 | ||
2e72f8e3 PU |
1508 | /** |
1509 | * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get | |
1510 | * callback | |
1511 | * @kcontrol: mixer control | |
1512 | * @ucontrol: control element information | |
1513 | * | |
1514 | * Callback to get the value of a dapm semi enumerated double mixer control. | |
1515 | * | |
1516 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
1517 | * used for handling bitfield coded enumeration for example. | |
1518 | * | |
1519 | * Returns 0 for success. | |
1520 | */ | |
1521 | int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol *kcontrol, | |
1522 | struct snd_ctl_elem_value *ucontrol) | |
1523 | { | |
1524 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
74155556 | 1525 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
2e72f8e3 PU |
1526 | unsigned short reg_val, val, mux; |
1527 | ||
1528 | reg_val = snd_soc_read(widget->codec, e->reg); | |
1529 | val = (reg_val >> e->shift_l) & e->mask; | |
1530 | for (mux = 0; mux < e->max; mux++) { | |
1531 | if (val == e->values[mux]) | |
1532 | break; | |
1533 | } | |
1534 | ucontrol->value.enumerated.item[0] = mux; | |
1535 | if (e->shift_l != e->shift_r) { | |
1536 | val = (reg_val >> e->shift_r) & e->mask; | |
1537 | for (mux = 0; mux < e->max; mux++) { | |
1538 | if (val == e->values[mux]) | |
1539 | break; | |
1540 | } | |
1541 | ucontrol->value.enumerated.item[1] = mux; | |
1542 | } | |
1543 | ||
1544 | return 0; | |
1545 | } | |
1546 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double); | |
1547 | ||
1548 | /** | |
1549 | * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set | |
1550 | * callback | |
1551 | * @kcontrol: mixer control | |
1552 | * @ucontrol: control element information | |
1553 | * | |
1554 | * Callback to set the value of a dapm semi enumerated double mixer control. | |
1555 | * | |
1556 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
1557 | * used for handling bitfield coded enumeration for example. | |
1558 | * | |
1559 | * Returns 0 for success. | |
1560 | */ | |
1561 | int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol, | |
1562 | struct snd_ctl_elem_value *ucontrol) | |
1563 | { | |
1564 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
74155556 | 1565 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
2e72f8e3 PU |
1566 | unsigned short val, mux; |
1567 | unsigned short mask; | |
1568 | int ret = 0; | |
1569 | ||
1570 | if (ucontrol->value.enumerated.item[0] > e->max - 1) | |
1571 | return -EINVAL; | |
1572 | mux = ucontrol->value.enumerated.item[0]; | |
1573 | val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l; | |
1574 | mask = e->mask << e->shift_l; | |
1575 | if (e->shift_l != e->shift_r) { | |
1576 | if (ucontrol->value.enumerated.item[1] > e->max - 1) | |
1577 | return -EINVAL; | |
1578 | val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r; | |
1579 | mask |= e->mask << e->shift_r; | |
1580 | } | |
1581 | ||
1582 | mutex_lock(&widget->codec->mutex); | |
1583 | widget->value = val; | |
74155556 | 1584 | dapm_mux_update_power(widget, kcontrol, mask, mux, val, e); |
2e72f8e3 PU |
1585 | if (widget->event) { |
1586 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
1587 | ret = widget->event(widget, | |
1588 | kcontrol, SND_SOC_DAPM_PRE_REG); | |
1589 | if (ret < 0) | |
1590 | goto out; | |
1591 | } | |
1592 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1593 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
1594 | ret = widget->event(widget, | |
1595 | kcontrol, SND_SOC_DAPM_POST_REG); | |
1596 | } else | |
1597 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1598 | ||
1599 | out: | |
1600 | mutex_unlock(&widget->codec->mutex); | |
1601 | return ret; | |
1602 | } | |
1603 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double); | |
1604 | ||
8b37dbd2 MB |
1605 | /** |
1606 | * snd_soc_dapm_info_pin_switch - Info for a pin switch | |
1607 | * | |
1608 | * @kcontrol: mixer control | |
1609 | * @uinfo: control element information | |
1610 | * | |
1611 | * Callback to provide information about a pin switch control. | |
1612 | */ | |
1613 | int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol, | |
1614 | struct snd_ctl_elem_info *uinfo) | |
1615 | { | |
1616 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1617 | uinfo->count = 1; | |
1618 | uinfo->value.integer.min = 0; | |
1619 | uinfo->value.integer.max = 1; | |
1620 | ||
1621 | return 0; | |
1622 | } | |
1623 | EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch); | |
1624 | ||
1625 | /** | |
1626 | * snd_soc_dapm_get_pin_switch - Get information for a pin switch | |
1627 | * | |
1628 | * @kcontrol: mixer control | |
1629 | * @ucontrol: Value | |
1630 | */ | |
1631 | int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol, | |
1632 | struct snd_ctl_elem_value *ucontrol) | |
1633 | { | |
1634 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1635 | const char *pin = (const char *)kcontrol->private_value; | |
1636 | ||
1637 | mutex_lock(&codec->mutex); | |
1638 | ||
1639 | ucontrol->value.integer.value[0] = | |
1640 | snd_soc_dapm_get_pin_status(codec, pin); | |
1641 | ||
1642 | mutex_unlock(&codec->mutex); | |
1643 | ||
1644 | return 0; | |
1645 | } | |
1646 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch); | |
1647 | ||
1648 | /** | |
1649 | * snd_soc_dapm_put_pin_switch - Set information for a pin switch | |
1650 | * | |
1651 | * @kcontrol: mixer control | |
1652 | * @ucontrol: Value | |
1653 | */ | |
1654 | int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol, | |
1655 | struct snd_ctl_elem_value *ucontrol) | |
1656 | { | |
1657 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1658 | const char *pin = (const char *)kcontrol->private_value; | |
1659 | ||
1660 | mutex_lock(&codec->mutex); | |
1661 | ||
1662 | if (ucontrol->value.integer.value[0]) | |
1663 | snd_soc_dapm_enable_pin(codec, pin); | |
1664 | else | |
1665 | snd_soc_dapm_disable_pin(codec, pin); | |
1666 | ||
1667 | snd_soc_dapm_sync(codec); | |
1668 | ||
1669 | mutex_unlock(&codec->mutex); | |
1670 | ||
1671 | return 0; | |
1672 | } | |
1673 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch); | |
1674 | ||
2b97eabc RP |
1675 | /** |
1676 | * snd_soc_dapm_new_control - create new dapm control | |
1677 | * @codec: audio codec | |
1678 | * @widget: widget template | |
1679 | * | |
1680 | * Creates a new dapm control based upon the template. | |
1681 | * | |
1682 | * Returns 0 for success else error. | |
1683 | */ | |
1684 | int snd_soc_dapm_new_control(struct snd_soc_codec *codec, | |
1685 | const struct snd_soc_dapm_widget *widget) | |
1686 | { | |
1687 | struct snd_soc_dapm_widget *w; | |
1688 | ||
1689 | if ((w = dapm_cnew_widget(widget)) == NULL) | |
1690 | return -ENOMEM; | |
1691 | ||
1692 | w->codec = codec; | |
1693 | INIT_LIST_HEAD(&w->sources); | |
1694 | INIT_LIST_HEAD(&w->sinks); | |
1695 | INIT_LIST_HEAD(&w->list); | |
1696 | list_add(&w->list, &codec->dapm_widgets); | |
1697 | ||
1698 | /* machine layer set ups unconnected pins and insertions */ | |
1699 | w->connected = 1; | |
1700 | return 0; | |
1701 | } | |
1702 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control); | |
1703 | ||
4ba1327a MB |
1704 | /** |
1705 | * snd_soc_dapm_new_controls - create new dapm controls | |
1706 | * @codec: audio codec | |
1707 | * @widget: widget array | |
1708 | * @num: number of widgets | |
1709 | * | |
1710 | * Creates new DAPM controls based upon the templates. | |
1711 | * | |
1712 | * Returns 0 for success else error. | |
1713 | */ | |
1714 | int snd_soc_dapm_new_controls(struct snd_soc_codec *codec, | |
1715 | const struct snd_soc_dapm_widget *widget, | |
1716 | int num) | |
1717 | { | |
1718 | int i, ret; | |
1719 | ||
1720 | for (i = 0; i < num; i++) { | |
1721 | ret = snd_soc_dapm_new_control(codec, widget); | |
b8b33cb5 MB |
1722 | if (ret < 0) { |
1723 | printk(KERN_ERR | |
1724 | "ASoC: Failed to create DAPM control %s: %d\n", | |
1725 | widget->name, ret); | |
4ba1327a | 1726 | return ret; |
b8b33cb5 | 1727 | } |
4ba1327a MB |
1728 | widget++; |
1729 | } | |
1730 | return 0; | |
1731 | } | |
1732 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls); | |
1733 | ||
1734 | ||
2b97eabc RP |
1735 | /** |
1736 | * snd_soc_dapm_stream_event - send a stream event to the dapm core | |
1737 | * @codec: audio codec | |
1738 | * @stream: stream name | |
1739 | * @event: stream event | |
1740 | * | |
1741 | * Sends a stream event to the dapm core. The core then makes any | |
1742 | * necessary widget power changes. | |
1743 | * | |
1744 | * Returns 0 for success else error. | |
1745 | */ | |
1746 | int snd_soc_dapm_stream_event(struct snd_soc_codec *codec, | |
1747 | char *stream, int event) | |
1748 | { | |
1749 | struct snd_soc_dapm_widget *w; | |
1750 | ||
11da21a7 SF |
1751 | if (stream == NULL) |
1752 | return 0; | |
1753 | ||
2b97eabc RP |
1754 | mutex_lock(&codec->mutex); |
1755 | list_for_each_entry(w, &codec->dapm_widgets, list) | |
1756 | { | |
1757 | if (!w->sname) | |
1758 | continue; | |
c1286b86 MB |
1759 | pr_debug("widget %s\n %s stream %s event %d\n", |
1760 | w->name, w->sname, stream, event); | |
2b97eabc RP |
1761 | if (strstr(w->sname, stream)) { |
1762 | switch(event) { | |
1763 | case SND_SOC_DAPM_STREAM_START: | |
1764 | w->active = 1; | |
1765 | break; | |
1766 | case SND_SOC_DAPM_STREAM_STOP: | |
1767 | w->active = 0; | |
1768 | break; | |
1769 | case SND_SOC_DAPM_STREAM_SUSPEND: | |
1770 | if (w->active) | |
1771 | w->suspend = 1; | |
1772 | w->active = 0; | |
1773 | break; | |
1774 | case SND_SOC_DAPM_STREAM_RESUME: | |
1775 | if (w->suspend) { | |
1776 | w->active = 1; | |
1777 | w->suspend = 0; | |
1778 | } | |
1779 | break; | |
1780 | case SND_SOC_DAPM_STREAM_PAUSE_PUSH: | |
1781 | break; | |
1782 | case SND_SOC_DAPM_STREAM_PAUSE_RELEASE: | |
1783 | break; | |
1784 | } | |
1785 | } | |
1786 | } | |
1787 | mutex_unlock(&codec->mutex); | |
1788 | ||
1789 | dapm_power_widgets(codec, event); | |
9bf8e7dd | 1790 | dump_dapm(codec, __func__); |
2b97eabc RP |
1791 | return 0; |
1792 | } | |
1793 | EXPORT_SYMBOL_GPL(snd_soc_dapm_stream_event); | |
1794 | ||
1795 | /** | |
a5302181 | 1796 | * snd_soc_dapm_enable_pin - enable pin. |
ac11a2b3 | 1797 | * @codec: SoC codec |
a5302181 | 1798 | * @pin: pin name |
2b97eabc | 1799 | * |
74b8f955 | 1800 | * Enables input/output pin and its parents or children widgets iff there is |
a5302181 LG |
1801 | * a valid audio route and active audio stream. |
1802 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
1803 | * do any widget power switching. | |
2b97eabc | 1804 | */ |
1649923d | 1805 | int snd_soc_dapm_enable_pin(struct snd_soc_codec *codec, const char *pin) |
2b97eabc | 1806 | { |
a5302181 LG |
1807 | return snd_soc_dapm_set_pin(codec, pin, 1); |
1808 | } | |
1809 | EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin); | |
2b97eabc | 1810 | |
a5302181 LG |
1811 | /** |
1812 | * snd_soc_dapm_disable_pin - disable pin. | |
1813 | * @codec: SoC codec | |
1814 | * @pin: pin name | |
1815 | * | |
74b8f955 | 1816 | * Disables input/output pin and its parents or children widgets. |
a5302181 LG |
1817 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to |
1818 | * do any widget power switching. | |
1819 | */ | |
1649923d | 1820 | int snd_soc_dapm_disable_pin(struct snd_soc_codec *codec, const char *pin) |
a5302181 LG |
1821 | { |
1822 | return snd_soc_dapm_set_pin(codec, pin, 0); | |
2b97eabc | 1823 | } |
a5302181 | 1824 | EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin); |
2b97eabc | 1825 | |
5817b52a MB |
1826 | /** |
1827 | * snd_soc_dapm_nc_pin - permanently disable pin. | |
1828 | * @codec: SoC codec | |
1829 | * @pin: pin name | |
1830 | * | |
1831 | * Marks the specified pin as being not connected, disabling it along | |
1832 | * any parent or child widgets. At present this is identical to | |
1833 | * snd_soc_dapm_disable_pin() but in future it will be extended to do | |
1834 | * additional things such as disabling controls which only affect | |
1835 | * paths through the pin. | |
1836 | * | |
1837 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
1838 | * do any widget power switching. | |
1839 | */ | |
1649923d | 1840 | int snd_soc_dapm_nc_pin(struct snd_soc_codec *codec, const char *pin) |
5817b52a MB |
1841 | { |
1842 | return snd_soc_dapm_set_pin(codec, pin, 0); | |
1843 | } | |
1844 | EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin); | |
1845 | ||
eeec12bf | 1846 | /** |
a5302181 | 1847 | * snd_soc_dapm_get_pin_status - get audio pin status |
eeec12bf | 1848 | * @codec: audio codec |
a5302181 | 1849 | * @pin: audio signal pin endpoint (or start point) |
eeec12bf | 1850 | * |
a5302181 | 1851 | * Get audio pin status - connected or disconnected. |
eeec12bf | 1852 | * |
a5302181 | 1853 | * Returns 1 for connected otherwise 0. |
eeec12bf | 1854 | */ |
1649923d | 1855 | int snd_soc_dapm_get_pin_status(struct snd_soc_codec *codec, const char *pin) |
eeec12bf GG |
1856 | { |
1857 | struct snd_soc_dapm_widget *w; | |
1858 | ||
1859 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
a5302181 | 1860 | if (!strcmp(w->name, pin)) |
eeec12bf GG |
1861 | return w->connected; |
1862 | } | |
1863 | ||
1864 | return 0; | |
1865 | } | |
a5302181 | 1866 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status); |
eeec12bf | 1867 | |
2b97eabc RP |
1868 | /** |
1869 | * snd_soc_dapm_free - free dapm resources | |
1870 | * @socdev: SoC device | |
1871 | * | |
1872 | * Free all dapm widgets and resources. | |
1873 | */ | |
1874 | void snd_soc_dapm_free(struct snd_soc_device *socdev) | |
1875 | { | |
6627a653 | 1876 | struct snd_soc_codec *codec = socdev->card->codec; |
2b97eabc RP |
1877 | |
1878 | snd_soc_dapm_sys_remove(socdev->dev); | |
1879 | dapm_free_widgets(codec); | |
1880 | } | |
1881 | EXPORT_SYMBOL_GPL(snd_soc_dapm_free); | |
1882 | ||
1883 | /* Module information */ | |
d331124d | 1884 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
2b97eabc RP |
1885 | MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC"); |
1886 | MODULE_LICENSE("GPL"); |