Commit | Line | Data |
---|---|---|
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> | |
20496ff3 | 40 | #include <linux/debugfs.h> |
2b97eabc RP |
41 | #include <sound/core.h> |
42 | #include <sound/pcm.h> | |
43 | #include <sound/pcm_params.h> | |
44 | #include <sound/soc-dapm.h> | |
45 | #include <sound/initval.h> | |
46 | ||
2b97eabc RP |
47 | /* dapm power sequences - make this per codec in the future */ |
48 | static int dapm_up_seq[] = { | |
38357ab2 MB |
49 | [snd_soc_dapm_pre] = 0, |
50 | [snd_soc_dapm_supply] = 1, | |
51 | [snd_soc_dapm_micbias] = 2, | |
010ff262 MB |
52 | [snd_soc_dapm_aif_in] = 3, |
53 | [snd_soc_dapm_aif_out] = 3, | |
54 | [snd_soc_dapm_mic] = 4, | |
55 | [snd_soc_dapm_mux] = 5, | |
56 | [snd_soc_dapm_value_mux] = 5, | |
57 | [snd_soc_dapm_dac] = 6, | |
58 | [snd_soc_dapm_mixer] = 7, | |
59 | [snd_soc_dapm_mixer_named_ctl] = 7, | |
60 | [snd_soc_dapm_pga] = 8, | |
61 | [snd_soc_dapm_adc] = 9, | |
62 | [snd_soc_dapm_hp] = 10, | |
63 | [snd_soc_dapm_spk] = 10, | |
64 | [snd_soc_dapm_post] = 11, | |
2b97eabc | 65 | }; |
ca9c1aae | 66 | |
2b97eabc | 67 | static int dapm_down_seq[] = { |
38357ab2 MB |
68 | [snd_soc_dapm_pre] = 0, |
69 | [snd_soc_dapm_adc] = 1, | |
70 | [snd_soc_dapm_hp] = 2, | |
1ca04065 | 71 | [snd_soc_dapm_spk] = 2, |
38357ab2 MB |
72 | [snd_soc_dapm_pga] = 4, |
73 | [snd_soc_dapm_mixer_named_ctl] = 5, | |
e3d4dabd MB |
74 | [snd_soc_dapm_mixer] = 5, |
75 | [snd_soc_dapm_dac] = 6, | |
76 | [snd_soc_dapm_mic] = 7, | |
77 | [snd_soc_dapm_micbias] = 8, | |
78 | [snd_soc_dapm_mux] = 9, | |
79 | [snd_soc_dapm_value_mux] = 9, | |
010ff262 MB |
80 | [snd_soc_dapm_aif_in] = 10, |
81 | [snd_soc_dapm_aif_out] = 10, | |
82 | [snd_soc_dapm_supply] = 11, | |
83 | [snd_soc_dapm_post] = 12, | |
2b97eabc RP |
84 | }; |
85 | ||
12ef193d | 86 | static void pop_wait(u32 pop_time) |
15e4c72f MB |
87 | { |
88 | if (pop_time) | |
89 | schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time)); | |
90 | } | |
91 | ||
12ef193d | 92 | static void pop_dbg(u32 pop_time, const char *fmt, ...) |
15e4c72f MB |
93 | { |
94 | va_list args; | |
95 | ||
96 | va_start(args, fmt); | |
97 | ||
98 | if (pop_time) { | |
99 | vprintk(fmt, args); | |
12ef193d | 100 | pop_wait(pop_time); |
15e4c72f MB |
101 | } |
102 | ||
103 | va_end(args); | |
104 | } | |
105 | ||
2b97eabc | 106 | /* create a new dapm widget */ |
88cb4290 | 107 | static inline struct snd_soc_dapm_widget *dapm_cnew_widget( |
2b97eabc RP |
108 | const struct snd_soc_dapm_widget *_widget) |
109 | { | |
88cb4290 | 110 | return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL); |
2b97eabc RP |
111 | } |
112 | ||
452c5eaa MB |
113 | /** |
114 | * snd_soc_dapm_set_bias_level - set the bias level for the system | |
115 | * @socdev: audio device | |
116 | * @level: level to configure | |
117 | * | |
118 | * Configure the bias (power) levels for the SoC audio device. | |
119 | * | |
120 | * Returns 0 for success else error. | |
121 | */ | |
122 | static int snd_soc_dapm_set_bias_level(struct snd_soc_device *socdev, | |
123 | enum snd_soc_bias_level level) | |
124 | { | |
125 | struct snd_soc_card *card = socdev->card; | |
126 | struct snd_soc_codec *codec = socdev->card->codec; | |
127 | int ret = 0; | |
128 | ||
f83fba8b MB |
129 | switch (level) { |
130 | case SND_SOC_BIAS_ON: | |
131 | dev_dbg(socdev->dev, "Setting full bias\n"); | |
132 | break; | |
133 | case SND_SOC_BIAS_PREPARE: | |
134 | dev_dbg(socdev->dev, "Setting bias prepare\n"); | |
135 | break; | |
136 | case SND_SOC_BIAS_STANDBY: | |
137 | dev_dbg(socdev->dev, "Setting standby bias\n"); | |
138 | break; | |
139 | case SND_SOC_BIAS_OFF: | |
140 | dev_dbg(socdev->dev, "Setting bias off\n"); | |
141 | break; | |
142 | default: | |
143 | dev_err(socdev->dev, "Setting invalid bias %d\n", level); | |
144 | return -EINVAL; | |
145 | } | |
146 | ||
452c5eaa MB |
147 | if (card->set_bias_level) |
148 | ret = card->set_bias_level(card, level); | |
474e09ca MB |
149 | if (ret == 0) { |
150 | if (codec->set_bias_level) | |
151 | ret = codec->set_bias_level(codec, level); | |
152 | else | |
153 | codec->bias_level = level; | |
154 | } | |
452c5eaa MB |
155 | |
156 | return ret; | |
157 | } | |
158 | ||
2b97eabc RP |
159 | /* set up initial codec paths */ |
160 | static void dapm_set_path_status(struct snd_soc_dapm_widget *w, | |
161 | struct snd_soc_dapm_path *p, int i) | |
162 | { | |
163 | switch (w->id) { | |
164 | case snd_soc_dapm_switch: | |
ca9c1aae IM |
165 | case snd_soc_dapm_mixer: |
166 | case snd_soc_dapm_mixer_named_ctl: { | |
2b97eabc | 167 | int val; |
4eaa9819 JS |
168 | struct soc_mixer_control *mc = (struct soc_mixer_control *) |
169 | w->kcontrols[i].private_value; | |
815ecf8d JS |
170 | unsigned int reg = mc->reg; |
171 | unsigned int shift = mc->shift; | |
4eaa9819 | 172 | int max = mc->max; |
815ecf8d JS |
173 | unsigned int mask = (1 << fls(max)) - 1; |
174 | unsigned int invert = mc->invert; | |
2b97eabc RP |
175 | |
176 | val = snd_soc_read(w->codec, reg); | |
177 | val = (val >> shift) & mask; | |
178 | ||
179 | if ((invert && !val) || (!invert && val)) | |
180 | p->connect = 1; | |
181 | else | |
182 | p->connect = 0; | |
183 | } | |
184 | break; | |
185 | case snd_soc_dapm_mux: { | |
186 | struct soc_enum *e = (struct soc_enum *)w->kcontrols[i].private_value; | |
187 | int val, item, bitmask; | |
188 | ||
f8ba0b7b | 189 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
190 | ; |
191 | val = snd_soc_read(w->codec, e->reg); | |
192 | item = (val >> e->shift_l) & (bitmask - 1); | |
193 | ||
194 | p->connect = 0; | |
f8ba0b7b | 195 | for (i = 0; i < e->max; i++) { |
2b97eabc RP |
196 | if (!(strcmp(p->name, e->texts[i])) && item == i) |
197 | p->connect = 1; | |
198 | } | |
199 | } | |
200 | break; | |
2e72f8e3 | 201 | case snd_soc_dapm_value_mux: { |
74155556 | 202 | struct soc_enum *e = (struct soc_enum *) |
2e72f8e3 PU |
203 | w->kcontrols[i].private_value; |
204 | int val, item; | |
205 | ||
206 | val = snd_soc_read(w->codec, e->reg); | |
207 | val = (val >> e->shift_l) & e->mask; | |
208 | for (item = 0; item < e->max; item++) { | |
209 | if (val == e->values[item]) | |
210 | break; | |
211 | } | |
212 | ||
213 | p->connect = 0; | |
214 | for (i = 0; i < e->max; i++) { | |
215 | if (!(strcmp(p->name, e->texts[i])) && item == i) | |
216 | p->connect = 1; | |
217 | } | |
218 | } | |
219 | break; | |
2b97eabc RP |
220 | /* does not effect routing - always connected */ |
221 | case snd_soc_dapm_pga: | |
222 | case snd_soc_dapm_output: | |
223 | case snd_soc_dapm_adc: | |
224 | case snd_soc_dapm_input: | |
225 | case snd_soc_dapm_dac: | |
226 | case snd_soc_dapm_micbias: | |
227 | case snd_soc_dapm_vmid: | |
246d0a17 | 228 | case snd_soc_dapm_supply: |
010ff262 MB |
229 | case snd_soc_dapm_aif_in: |
230 | case snd_soc_dapm_aif_out: | |
2b97eabc RP |
231 | p->connect = 1; |
232 | break; | |
233 | /* does effect routing - dynamically connected */ | |
234 | case snd_soc_dapm_hp: | |
235 | case snd_soc_dapm_mic: | |
236 | case snd_soc_dapm_spk: | |
237 | case snd_soc_dapm_line: | |
238 | case snd_soc_dapm_pre: | |
239 | case snd_soc_dapm_post: | |
240 | p->connect = 0; | |
241 | break; | |
242 | } | |
243 | } | |
244 | ||
74b8f955 | 245 | /* connect mux widget to its interconnecting audio paths */ |
2b97eabc RP |
246 | static int dapm_connect_mux(struct snd_soc_codec *codec, |
247 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, | |
248 | struct snd_soc_dapm_path *path, const char *control_name, | |
249 | const struct snd_kcontrol_new *kcontrol) | |
250 | { | |
251 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
252 | int i; | |
253 | ||
f8ba0b7b | 254 | for (i = 0; i < e->max; i++) { |
2b97eabc RP |
255 | if (!(strcmp(control_name, e->texts[i]))) { |
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 = (char*)e->texts[i]; | |
260 | dapm_set_path_status(dest, path, 0); | |
261 | return 0; | |
262 | } | |
263 | } | |
264 | ||
265 | return -ENODEV; | |
266 | } | |
267 | ||
74b8f955 | 268 | /* connect mixer widget to its interconnecting audio paths */ |
2b97eabc RP |
269 | static int dapm_connect_mixer(struct snd_soc_codec *codec, |
270 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, | |
271 | struct snd_soc_dapm_path *path, const char *control_name) | |
272 | { | |
273 | int i; | |
274 | ||
275 | /* search for mixer kcontrol */ | |
276 | for (i = 0; i < dest->num_kcontrols; i++) { | |
277 | if (!strcmp(control_name, dest->kcontrols[i].name)) { | |
278 | list_add(&path->list, &codec->dapm_paths); | |
279 | list_add(&path->list_sink, &dest->sources); | |
280 | list_add(&path->list_source, &src->sinks); | |
281 | path->name = dest->kcontrols[i].name; | |
282 | dapm_set_path_status(dest, path, i); | |
283 | return 0; | |
284 | } | |
285 | } | |
286 | return -ENODEV; | |
287 | } | |
288 | ||
289 | /* update dapm codec register bits */ | |
290 | static int dapm_update_bits(struct snd_soc_dapm_widget *widget) | |
291 | { | |
292 | int change, power; | |
46f5822f | 293 | unsigned int old, new; |
2b97eabc RP |
294 | struct snd_soc_codec *codec = widget->codec; |
295 | ||
296 | /* check for valid widgets */ | |
297 | if (widget->reg < 0 || widget->id == snd_soc_dapm_input || | |
298 | widget->id == snd_soc_dapm_output || | |
299 | widget->id == snd_soc_dapm_hp || | |
300 | widget->id == snd_soc_dapm_mic || | |
301 | widget->id == snd_soc_dapm_line || | |
302 | widget->id == snd_soc_dapm_spk) | |
303 | return 0; | |
304 | ||
305 | power = widget->power; | |
306 | if (widget->invert) | |
307 | power = (power ? 0:1); | |
308 | ||
309 | old = snd_soc_read(codec, widget->reg); | |
310 | new = (old & ~(0x1 << widget->shift)) | (power << widget->shift); | |
311 | ||
312 | change = old != new; | |
313 | if (change) { | |
12ef193d TK |
314 | pop_dbg(codec->pop_time, "pop test %s : %s in %d ms\n", |
315 | widget->name, widget->power ? "on" : "off", | |
316 | codec->pop_time); | |
2b97eabc | 317 | snd_soc_write(codec, widget->reg, new); |
12ef193d | 318 | pop_wait(codec->pop_time); |
2b97eabc | 319 | } |
c1286b86 MB |
320 | pr_debug("reg %x old %x new %x change %d\n", widget->reg, |
321 | old, new, change); | |
2b97eabc RP |
322 | return change; |
323 | } | |
324 | ||
325 | /* ramps the volume up or down to minimise pops before or after a | |
326 | * DAPM power event */ | |
327 | static int dapm_set_pga(struct snd_soc_dapm_widget *widget, int power) | |
328 | { | |
329 | const struct snd_kcontrol_new *k = widget->kcontrols; | |
330 | ||
331 | if (widget->muted && !power) | |
332 | return 0; | |
333 | if (!widget->muted && power) | |
334 | return 0; | |
335 | ||
336 | if (widget->num_kcontrols && k) { | |
4eaa9819 JS |
337 | struct soc_mixer_control *mc = |
338 | (struct soc_mixer_control *)k->private_value; | |
815ecf8d JS |
339 | unsigned int reg = mc->reg; |
340 | unsigned int shift = mc->shift; | |
4eaa9819 | 341 | int max = mc->max; |
815ecf8d JS |
342 | unsigned int mask = (1 << fls(max)) - 1; |
343 | unsigned int invert = mc->invert; | |
2b97eabc RP |
344 | |
345 | if (power) { | |
346 | int i; | |
347 | /* power up has happended, increase volume to last level */ | |
348 | if (invert) { | |
4eaa9819 | 349 | for (i = max; i > widget->saved_value; i--) |
2b97eabc RP |
350 | snd_soc_update_bits(widget->codec, reg, mask, i); |
351 | } else { | |
352 | for (i = 0; i < widget->saved_value; i++) | |
353 | snd_soc_update_bits(widget->codec, reg, mask, i); | |
354 | } | |
355 | widget->muted = 0; | |
356 | } else { | |
357 | /* power down is about to occur, decrease volume to mute */ | |
358 | int val = snd_soc_read(widget->codec, reg); | |
359 | int i = widget->saved_value = (val >> shift) & mask; | |
360 | if (invert) { | |
361 | for (; i < mask; i++) | |
362 | snd_soc_update_bits(widget->codec, reg, mask, i); | |
363 | } else { | |
364 | for (; i > 0; i--) | |
365 | snd_soc_update_bits(widget->codec, reg, mask, i); | |
366 | } | |
367 | widget->muted = 1; | |
368 | } | |
369 | } | |
370 | return 0; | |
371 | } | |
372 | ||
373 | /* create new dapm mixer control */ | |
374 | static int dapm_new_mixer(struct snd_soc_codec *codec, | |
375 | struct snd_soc_dapm_widget *w) | |
376 | { | |
377 | int i, ret = 0; | |
219b93f5 | 378 | size_t name_len; |
2b97eabc RP |
379 | struct snd_soc_dapm_path *path; |
380 | ||
381 | /* add kcontrol */ | |
382 | for (i = 0; i < w->num_kcontrols; i++) { | |
383 | ||
384 | /* match name */ | |
385 | list_for_each_entry(path, &w->sources, list_sink) { | |
386 | ||
387 | /* mixer/mux paths name must match control name */ | |
388 | if (path->name != (char*)w->kcontrols[i].name) | |
389 | continue; | |
390 | ||
ca9c1aae IM |
391 | /* add dapm control with long name. |
392 | * for dapm_mixer this is the concatenation of the | |
393 | * mixer and kcontrol name. | |
394 | * for dapm_mixer_named_ctl this is simply the | |
395 | * kcontrol name. | |
396 | */ | |
397 | name_len = strlen(w->kcontrols[i].name) + 1; | |
07495f3e | 398 | if (w->id != snd_soc_dapm_mixer_named_ctl) |
ca9c1aae IM |
399 | name_len += 1 + strlen(w->name); |
400 | ||
219b93f5 | 401 | path->long_name = kmalloc(name_len, GFP_KERNEL); |
ca9c1aae | 402 | |
2b97eabc RP |
403 | if (path->long_name == NULL) |
404 | return -ENOMEM; | |
405 | ||
ca9c1aae | 406 | switch (w->id) { |
ca9c1aae IM |
407 | default: |
408 | snprintf(path->long_name, name_len, "%s %s", | |
409 | w->name, w->kcontrols[i].name); | |
07495f3e | 410 | break; |
ca9c1aae IM |
411 | case snd_soc_dapm_mixer_named_ctl: |
412 | snprintf(path->long_name, name_len, "%s", | |
413 | w->kcontrols[i].name); | |
07495f3e | 414 | break; |
ca9c1aae IM |
415 | } |
416 | ||
219b93f5 MB |
417 | path->long_name[name_len - 1] = '\0'; |
418 | ||
2b97eabc RP |
419 | path->kcontrol = snd_soc_cnew(&w->kcontrols[i], w, |
420 | path->long_name); | |
421 | ret = snd_ctl_add(codec->card, path->kcontrol); | |
422 | if (ret < 0) { | |
6553e192 MB |
423 | printk(KERN_ERR "asoc: failed to add dapm kcontrol %s: %d\n", |
424 | path->long_name, | |
425 | ret); | |
2b97eabc RP |
426 | kfree(path->long_name); |
427 | path->long_name = NULL; | |
428 | return ret; | |
429 | } | |
430 | } | |
431 | } | |
432 | return ret; | |
433 | } | |
434 | ||
435 | /* create new dapm mux control */ | |
436 | static int dapm_new_mux(struct snd_soc_codec *codec, | |
437 | struct snd_soc_dapm_widget *w) | |
438 | { | |
439 | struct snd_soc_dapm_path *path = NULL; | |
440 | struct snd_kcontrol *kcontrol; | |
441 | int ret = 0; | |
442 | ||
443 | if (!w->num_kcontrols) { | |
444 | printk(KERN_ERR "asoc: mux %s has no controls\n", w->name); | |
445 | return -EINVAL; | |
446 | } | |
447 | ||
448 | kcontrol = snd_soc_cnew(&w->kcontrols[0], w, w->name); | |
449 | ret = snd_ctl_add(codec->card, kcontrol); | |
450 | if (ret < 0) | |
451 | goto err; | |
452 | ||
453 | list_for_each_entry(path, &w->sources, list_sink) | |
454 | path->kcontrol = kcontrol; | |
455 | ||
456 | return ret; | |
457 | ||
458 | err: | |
459 | printk(KERN_ERR "asoc: failed to add kcontrol %s\n", w->name); | |
460 | return ret; | |
461 | } | |
462 | ||
463 | /* create new dapm volume control */ | |
464 | static int dapm_new_pga(struct snd_soc_codec *codec, | |
465 | struct snd_soc_dapm_widget *w) | |
466 | { | |
467 | struct snd_kcontrol *kcontrol; | |
468 | int ret = 0; | |
469 | ||
470 | if (!w->num_kcontrols) | |
471 | return -EINVAL; | |
472 | ||
473 | kcontrol = snd_soc_cnew(&w->kcontrols[0], w, w->name); | |
474 | ret = snd_ctl_add(codec->card, kcontrol); | |
475 | if (ret < 0) { | |
476 | printk(KERN_ERR "asoc: failed to add kcontrol %s\n", w->name); | |
477 | return ret; | |
478 | } | |
479 | ||
480 | return ret; | |
481 | } | |
482 | ||
483 | /* reset 'walked' bit for each dapm path */ | |
484 | static inline void dapm_clear_walk(struct snd_soc_codec *codec) | |
485 | { | |
486 | struct snd_soc_dapm_path *p; | |
487 | ||
488 | list_for_each_entry(p, &codec->dapm_paths, list) | |
489 | p->walked = 0; | |
490 | } | |
491 | ||
492 | /* | |
493 | * Recursively check for a completed path to an active or physically connected | |
494 | * output widget. Returns number of complete paths. | |
495 | */ | |
496 | static int is_connected_output_ep(struct snd_soc_dapm_widget *widget) | |
497 | { | |
498 | struct snd_soc_dapm_path *path; | |
499 | int con = 0; | |
500 | ||
246d0a17 MB |
501 | if (widget->id == snd_soc_dapm_supply) |
502 | return 0; | |
503 | ||
010ff262 MB |
504 | switch (widget->id) { |
505 | case snd_soc_dapm_adc: | |
506 | case snd_soc_dapm_aif_out: | |
507 | if (widget->active) | |
508 | return 1; | |
509 | default: | |
510 | break; | |
511 | } | |
2b97eabc RP |
512 | |
513 | if (widget->connected) { | |
514 | /* connected pin ? */ | |
515 | if (widget->id == snd_soc_dapm_output && !widget->ext) | |
516 | return 1; | |
517 | ||
518 | /* connected jack or spk ? */ | |
519 | if (widget->id == snd_soc_dapm_hp || widget->id == snd_soc_dapm_spk || | |
eaeae5d9 | 520 | (widget->id == snd_soc_dapm_line && !list_empty(&widget->sources))) |
2b97eabc RP |
521 | return 1; |
522 | } | |
523 | ||
524 | list_for_each_entry(path, &widget->sinks, list_source) { | |
525 | if (path->walked) | |
526 | continue; | |
527 | ||
528 | if (path->sink && path->connect) { | |
529 | path->walked = 1; | |
530 | con += is_connected_output_ep(path->sink); | |
531 | } | |
532 | } | |
533 | ||
534 | return con; | |
535 | } | |
536 | ||
537 | /* | |
538 | * Recursively check for a completed path to an active or physically connected | |
539 | * input widget. Returns number of complete paths. | |
540 | */ | |
541 | static int is_connected_input_ep(struct snd_soc_dapm_widget *widget) | |
542 | { | |
543 | struct snd_soc_dapm_path *path; | |
544 | int con = 0; | |
545 | ||
246d0a17 MB |
546 | if (widget->id == snd_soc_dapm_supply) |
547 | return 0; | |
548 | ||
2b97eabc | 549 | /* active stream ? */ |
010ff262 MB |
550 | switch (widget->id) { |
551 | case snd_soc_dapm_dac: | |
552 | case snd_soc_dapm_aif_in: | |
553 | if (widget->active) | |
554 | return 1; | |
555 | default: | |
556 | break; | |
557 | } | |
2b97eabc RP |
558 | |
559 | if (widget->connected) { | |
560 | /* connected pin ? */ | |
561 | if (widget->id == snd_soc_dapm_input && !widget->ext) | |
562 | return 1; | |
563 | ||
564 | /* connected VMID/Bias for lower pops */ | |
565 | if (widget->id == snd_soc_dapm_vmid) | |
566 | return 1; | |
567 | ||
568 | /* connected jack ? */ | |
eaeae5d9 PU |
569 | if (widget->id == snd_soc_dapm_mic || |
570 | (widget->id == snd_soc_dapm_line && !list_empty(&widget->sinks))) | |
2b97eabc RP |
571 | return 1; |
572 | } | |
573 | ||
574 | list_for_each_entry(path, &widget->sources, list_sink) { | |
575 | if (path->walked) | |
576 | continue; | |
577 | ||
578 | if (path->source && path->connect) { | |
579 | path->walked = 1; | |
580 | con += is_connected_input_ep(path->source); | |
581 | } | |
582 | } | |
583 | ||
584 | return con; | |
585 | } | |
586 | ||
e2be2ccf JN |
587 | /* |
588 | * Handler for generic register modifier widget. | |
589 | */ | |
590 | int dapm_reg_event(struct snd_soc_dapm_widget *w, | |
591 | struct snd_kcontrol *kcontrol, int event) | |
592 | { | |
593 | unsigned int val; | |
594 | ||
595 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
596 | val = w->on_val; | |
597 | else | |
598 | val = w->off_val; | |
599 | ||
600 | snd_soc_update_bits(w->codec, -(w->reg + 1), | |
601 | w->mask << w->shift, val << w->shift); | |
602 | ||
603 | return 0; | |
604 | } | |
11589418 | 605 | EXPORT_SYMBOL_GPL(dapm_reg_event); |
e2be2ccf | 606 | |
025756ec MB |
607 | /* Standard power change method, used to apply power changes to most |
608 | * widgets. | |
609 | */ | |
610 | static int dapm_generic_apply_power(struct snd_soc_dapm_widget *w) | |
611 | { | |
612 | int ret; | |
613 | ||
614 | /* call any power change event handlers */ | |
615 | if (w->event) | |
616 | pr_debug("power %s event for %s flags %x\n", | |
617 | w->power ? "on" : "off", | |
618 | w->name, w->event_flags); | |
619 | ||
620 | /* power up pre event */ | |
621 | if (w->power && w->event && | |
622 | (w->event_flags & SND_SOC_DAPM_PRE_PMU)) { | |
623 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMU); | |
624 | if (ret < 0) | |
625 | return ret; | |
626 | } | |
627 | ||
628 | /* power down pre event */ | |
629 | if (!w->power && w->event && | |
630 | (w->event_flags & SND_SOC_DAPM_PRE_PMD)) { | |
631 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMD); | |
632 | if (ret < 0) | |
633 | return ret; | |
634 | } | |
635 | ||
636 | /* Lower PGA volume to reduce pops */ | |
637 | if (w->id == snd_soc_dapm_pga && !w->power) | |
638 | dapm_set_pga(w, w->power); | |
639 | ||
640 | dapm_update_bits(w); | |
641 | ||
642 | /* Raise PGA volume to reduce pops */ | |
643 | if (w->id == snd_soc_dapm_pga && w->power) | |
644 | dapm_set_pga(w, w->power); | |
645 | ||
646 | /* power up post event */ | |
647 | if (w->power && w->event && | |
648 | (w->event_flags & SND_SOC_DAPM_POST_PMU)) { | |
649 | ret = w->event(w, | |
650 | NULL, SND_SOC_DAPM_POST_PMU); | |
651 | if (ret < 0) | |
652 | return ret; | |
653 | } | |
654 | ||
655 | /* power down post event */ | |
656 | if (!w->power && w->event && | |
657 | (w->event_flags & SND_SOC_DAPM_POST_PMD)) { | |
658 | ret = w->event(w, NULL, SND_SOC_DAPM_POST_PMD); | |
659 | if (ret < 0) | |
660 | return ret; | |
661 | } | |
662 | ||
663 | return 0; | |
664 | } | |
665 | ||
cd0f2d47 MB |
666 | /* Generic check to see if a widget should be powered. |
667 | */ | |
668 | static int dapm_generic_check_power(struct snd_soc_dapm_widget *w) | |
669 | { | |
670 | int in, out; | |
671 | ||
672 | in = is_connected_input_ep(w); | |
673 | dapm_clear_walk(w->codec); | |
674 | out = is_connected_output_ep(w); | |
675 | dapm_clear_walk(w->codec); | |
676 | return out != 0 && in != 0; | |
677 | } | |
678 | ||
6ea31b9f MB |
679 | /* Check to see if an ADC has power */ |
680 | static int dapm_adc_check_power(struct snd_soc_dapm_widget *w) | |
681 | { | |
682 | int in; | |
683 | ||
684 | if (w->active) { | |
685 | in = is_connected_input_ep(w); | |
686 | dapm_clear_walk(w->codec); | |
687 | return in != 0; | |
688 | } else { | |
689 | return dapm_generic_check_power(w); | |
690 | } | |
691 | } | |
692 | ||
693 | /* Check to see if a DAC has power */ | |
694 | static int dapm_dac_check_power(struct snd_soc_dapm_widget *w) | |
695 | { | |
696 | int out; | |
697 | ||
698 | if (w->active) { | |
699 | out = is_connected_output_ep(w); | |
700 | dapm_clear_walk(w->codec); | |
701 | return out != 0; | |
702 | } else { | |
703 | return dapm_generic_check_power(w); | |
704 | } | |
705 | } | |
706 | ||
246d0a17 MB |
707 | /* Check to see if a power supply is needed */ |
708 | static int dapm_supply_check_power(struct snd_soc_dapm_widget *w) | |
709 | { | |
710 | struct snd_soc_dapm_path *path; | |
711 | int power = 0; | |
712 | ||
713 | /* Check if one of our outputs is connected */ | |
714 | list_for_each_entry(path, &w->sinks, list_source) { | |
215edda3 MB |
715 | if (path->connected && |
716 | !path->connected(path->source, path->sink)) | |
717 | continue; | |
718 | ||
246d0a17 MB |
719 | if (path->sink && path->sink->power_check && |
720 | path->sink->power_check(path->sink)) { | |
721 | power = 1; | |
722 | break; | |
723 | } | |
724 | } | |
725 | ||
726 | dapm_clear_walk(w->codec); | |
727 | ||
728 | return power; | |
729 | } | |
730 | ||
38357ab2 MB |
731 | static int dapm_seq_compare(struct snd_soc_dapm_widget *a, |
732 | struct snd_soc_dapm_widget *b, | |
733 | int sort[]) | |
42aa3418 | 734 | { |
d207c68d MB |
735 | if (a->codec != b->codec) |
736 | return (unsigned long)a - (unsigned long)b; | |
38357ab2 MB |
737 | if (sort[a->id] != sort[b->id]) |
738 | return sort[a->id] - sort[b->id]; | |
b22ead2a MB |
739 | if (a->reg != b->reg) |
740 | return a->reg - b->reg; | |
42aa3418 | 741 | |
38357ab2 MB |
742 | return 0; |
743 | } | |
42aa3418 | 744 | |
38357ab2 MB |
745 | /* Insert a widget in order into a DAPM power sequence. */ |
746 | static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget, | |
747 | struct list_head *list, | |
748 | int sort[]) | |
749 | { | |
750 | struct snd_soc_dapm_widget *w; | |
751 | ||
752 | list_for_each_entry(w, list, power_list) | |
753 | if (dapm_seq_compare(new_widget, w, sort) < 0) { | |
754 | list_add_tail(&new_widget->power_list, &w->power_list); | |
755 | return; | |
756 | } | |
757 | ||
758 | list_add_tail(&new_widget->power_list, list); | |
759 | } | |
760 | ||
b22ead2a MB |
761 | /* Apply the coalesced changes from a DAPM sequence */ |
762 | static void dapm_seq_run_coalesced(struct snd_soc_codec *codec, | |
763 | struct list_head *pending) | |
163cac06 MB |
764 | { |
765 | struct snd_soc_dapm_widget *w; | |
81628103 | 766 | int reg, power, ret; |
b22ead2a MB |
767 | unsigned int value = 0; |
768 | unsigned int mask = 0; | |
769 | unsigned int cur_mask; | |
770 | ||
771 | reg = list_first_entry(pending, struct snd_soc_dapm_widget, | |
772 | power_list)->reg; | |
773 | ||
774 | list_for_each_entry(w, pending, power_list) { | |
775 | cur_mask = 1 << w->shift; | |
776 | BUG_ON(reg != w->reg); | |
777 | ||
778 | if (w->invert) | |
779 | power = !w->power; | |
780 | else | |
781 | power = w->power; | |
782 | ||
783 | mask |= cur_mask; | |
784 | if (power) | |
785 | value |= cur_mask; | |
786 | ||
787 | pop_dbg(codec->pop_time, | |
788 | "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n", | |
789 | w->name, reg, value, mask); | |
81628103 MB |
790 | |
791 | /* power up pre event */ | |
792 | if (w->power && w->event && | |
793 | (w->event_flags & SND_SOC_DAPM_PRE_PMU)) { | |
794 | pop_dbg(codec->pop_time, "pop test : %s PRE_PMU\n", | |
795 | w->name); | |
796 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMU); | |
42aa3418 | 797 | if (ret < 0) |
81628103 MB |
798 | pr_err("%s: pre event failed: %d\n", |
799 | w->name, ret); | |
800 | } | |
801 | ||
802 | /* power down pre event */ | |
803 | if (!w->power && w->event && | |
804 | (w->event_flags & SND_SOC_DAPM_PRE_PMD)) { | |
805 | pop_dbg(codec->pop_time, "pop test : %s PRE_PMD\n", | |
806 | w->name); | |
807 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMD); | |
42aa3418 | 808 | if (ret < 0) |
81628103 MB |
809 | pr_err("%s: pre event failed: %d\n", |
810 | w->name, ret); | |
42aa3418 | 811 | } |
6ea31b9f | 812 | |
4f1c1923 MB |
813 | /* Lower PGA volume to reduce pops */ |
814 | if (w->id == snd_soc_dapm_pga && !w->power) | |
815 | dapm_set_pga(w, w->power); | |
81628103 MB |
816 | } |
817 | ||
818 | if (reg >= 0) { | |
819 | pop_dbg(codec->pop_time, | |
820 | "pop test : Applying 0x%x/0x%x to %x in %dms\n", | |
821 | value, mask, reg, codec->pop_time); | |
822 | pop_wait(codec->pop_time); | |
823 | snd_soc_update_bits(codec, reg, mask, value); | |
b22ead2a MB |
824 | } |
825 | ||
81628103 | 826 | list_for_each_entry(w, pending, power_list) { |
4f1c1923 MB |
827 | /* Raise PGA volume to reduce pops */ |
828 | if (w->id == snd_soc_dapm_pga && w->power) | |
829 | dapm_set_pga(w, w->power); | |
42aa3418 | 830 | |
81628103 MB |
831 | /* power up post event */ |
832 | if (w->power && w->event && | |
833 | (w->event_flags & SND_SOC_DAPM_POST_PMU)) { | |
834 | pop_dbg(codec->pop_time, "pop test : %s POST_PMU\n", | |
835 | w->name); | |
42aa3418 MB |
836 | ret = w->event(w, |
837 | NULL, SND_SOC_DAPM_POST_PMU); | |
838 | if (ret < 0) | |
81628103 MB |
839 | pr_err("%s: post event failed: %d\n", |
840 | w->name, ret); | |
841 | } | |
842 | ||
843 | /* power down post event */ | |
844 | if (!w->power && w->event && | |
845 | (w->event_flags & SND_SOC_DAPM_POST_PMD)) { | |
846 | pop_dbg(codec->pop_time, "pop test : %s POST_PMD\n", | |
847 | w->name); | |
848 | ret = w->event(w, NULL, SND_SOC_DAPM_POST_PMD); | |
42aa3418 | 849 | if (ret < 0) |
81628103 MB |
850 | pr_err("%s: post event failed: %d\n", |
851 | w->name, ret); | |
42aa3418 | 852 | } |
81628103 | 853 | } |
b22ead2a | 854 | } |
42aa3418 | 855 | |
b22ead2a MB |
856 | /* Apply a DAPM power sequence. |
857 | * | |
858 | * We walk over a pre-sorted list of widgets to apply power to. In | |
859 | * order to minimise the number of writes to the device required | |
860 | * multiple widgets will be updated in a single write where possible. | |
861 | * Currently anything that requires more than a single write is not | |
862 | * handled. | |
863 | */ | |
864 | static void dapm_seq_run(struct snd_soc_codec *codec, struct list_head *list, | |
865 | int event, int sort[]) | |
866 | { | |
867 | struct snd_soc_dapm_widget *w, *n; | |
868 | LIST_HEAD(pending); | |
869 | int cur_sort = -1; | |
870 | int cur_reg = SND_SOC_NOPM; | |
163cac06 MB |
871 | int ret; |
872 | ||
b22ead2a MB |
873 | list_for_each_entry_safe(w, n, list, power_list) { |
874 | ret = 0; | |
875 | ||
876 | /* Do we need to apply any queued changes? */ | |
877 | if (sort[w->id] != cur_sort || w->reg != cur_reg) { | |
878 | if (!list_empty(&pending)) | |
879 | dapm_seq_run_coalesced(codec, &pending); | |
880 | ||
881 | INIT_LIST_HEAD(&pending); | |
882 | cur_sort = -1; | |
883 | cur_reg = SND_SOC_NOPM; | |
884 | } | |
885 | ||
163cac06 MB |
886 | switch (w->id) { |
887 | case snd_soc_dapm_pre: | |
888 | if (!w->event) | |
b22ead2a MB |
889 | list_for_each_entry_safe_continue(w, n, list, |
890 | power_list); | |
163cac06 | 891 | |
b22ead2a | 892 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
893 | ret = w->event(w, |
894 | NULL, SND_SOC_DAPM_PRE_PMU); | |
b22ead2a | 895 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
896 | ret = w->event(w, |
897 | NULL, SND_SOC_DAPM_PRE_PMD); | |
163cac06 MB |
898 | break; |
899 | ||
900 | case snd_soc_dapm_post: | |
901 | if (!w->event) | |
b22ead2a MB |
902 | list_for_each_entry_safe_continue(w, n, list, |
903 | power_list); | |
163cac06 | 904 | |
b22ead2a | 905 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
906 | ret = w->event(w, |
907 | NULL, SND_SOC_DAPM_POST_PMU); | |
b22ead2a | 908 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
909 | ret = w->event(w, |
910 | NULL, SND_SOC_DAPM_POST_PMD); | |
163cac06 MB |
911 | break; |
912 | ||
b22ead2a MB |
913 | case snd_soc_dapm_input: |
914 | case snd_soc_dapm_output: | |
915 | case snd_soc_dapm_hp: | |
916 | case snd_soc_dapm_mic: | |
917 | case snd_soc_dapm_line: | |
918 | case snd_soc_dapm_spk: | |
919 | /* No register support currently */ | |
163cac06 | 920 | ret = dapm_generic_apply_power(w); |
163cac06 | 921 | break; |
b22ead2a MB |
922 | |
923 | default: | |
81628103 MB |
924 | /* Queue it up for application */ |
925 | cur_sort = sort[w->id]; | |
926 | cur_reg = w->reg; | |
927 | list_move(&w->power_list, &pending); | |
928 | break; | |
163cac06 | 929 | } |
b22ead2a MB |
930 | |
931 | if (ret < 0) | |
932 | pr_err("Failed to apply widget power: %d\n", | |
933 | ret); | |
6ea31b9f | 934 | } |
b22ead2a MB |
935 | |
936 | if (!list_empty(&pending)) | |
937 | dapm_seq_run_coalesced(codec, &pending); | |
42aa3418 MB |
938 | } |
939 | ||
2b97eabc RP |
940 | /* |
941 | * Scan each dapm widget for complete audio path. | |
942 | * A complete path is a route that has valid endpoints i.e.:- | |
943 | * | |
944 | * o DAC to output pin. | |
945 | * o Input Pin to ADC. | |
946 | * o Input pin to Output pin (bypass, sidetone) | |
947 | * o DAC to ADC (loopback). | |
948 | */ | |
d9c96cf3 | 949 | static int dapm_power_widgets(struct snd_soc_codec *codec, int event) |
2b97eabc | 950 | { |
452c5eaa | 951 | struct snd_soc_device *socdev = codec->socdev; |
2b97eabc | 952 | struct snd_soc_dapm_widget *w; |
291f3bbc MB |
953 | LIST_HEAD(up_list); |
954 | LIST_HEAD(down_list); | |
6d3ddc81 | 955 | int ret = 0; |
38357ab2 | 956 | int power; |
452c5eaa | 957 | int sys_power = 0; |
6d3ddc81 | 958 | |
6d3ddc81 MB |
959 | /* Check which widgets we need to power and store them in |
960 | * lists indicating if they should be powered up or down. | |
961 | */ | |
962 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
963 | switch (w->id) { | |
964 | case snd_soc_dapm_pre: | |
291f3bbc | 965 | dapm_seq_insert(w, &down_list, dapm_down_seq); |
6d3ddc81 MB |
966 | break; |
967 | case snd_soc_dapm_post: | |
291f3bbc | 968 | dapm_seq_insert(w, &up_list, dapm_up_seq); |
6d3ddc81 MB |
969 | break; |
970 | ||
971 | default: | |
972 | if (!w->power_check) | |
973 | continue; | |
974 | ||
50b6bce5 MB |
975 | /* If we're suspending then pull down all the |
976 | * power. */ | |
977 | switch (event) { | |
978 | case SND_SOC_DAPM_STREAM_SUSPEND: | |
979 | power = 0; | |
980 | break; | |
981 | ||
982 | default: | |
983 | power = w->power_check(w); | |
984 | if (power) | |
985 | sys_power = 1; | |
986 | break; | |
987 | } | |
452c5eaa | 988 | |
6d3ddc81 MB |
989 | if (w->power == power) |
990 | continue; | |
991 | ||
992 | if (power) | |
291f3bbc | 993 | dapm_seq_insert(w, &up_list, dapm_up_seq); |
6d3ddc81 | 994 | else |
291f3bbc | 995 | dapm_seq_insert(w, &down_list, dapm_down_seq); |
6d3ddc81 MB |
996 | |
997 | w->power = power; | |
998 | break; | |
999 | } | |
2b97eabc RP |
1000 | } |
1001 | ||
b14b76a5 MB |
1002 | /* If there are no DAPM widgets then try to figure out power from the |
1003 | * event type. | |
1004 | */ | |
1005 | if (list_empty(&codec->dapm_widgets)) { | |
1006 | switch (event) { | |
1007 | case SND_SOC_DAPM_STREAM_START: | |
1008 | case SND_SOC_DAPM_STREAM_RESUME: | |
1009 | sys_power = 1; | |
1010 | break; | |
50b6bce5 MB |
1011 | case SND_SOC_DAPM_STREAM_SUSPEND: |
1012 | sys_power = 0; | |
1013 | break; | |
b14b76a5 | 1014 | case SND_SOC_DAPM_STREAM_NOP: |
a96ca338 MB |
1015 | switch (codec->bias_level) { |
1016 | case SND_SOC_BIAS_STANDBY: | |
1017 | case SND_SOC_BIAS_OFF: | |
1018 | sys_power = 0; | |
1019 | break; | |
1020 | default: | |
1021 | sys_power = 1; | |
1022 | break; | |
1023 | } | |
50b6bce5 | 1024 | break; |
b14b76a5 MB |
1025 | default: |
1026 | break; | |
1027 | } | |
1028 | } | |
1029 | ||
a96ca338 MB |
1030 | if (sys_power && codec->bias_level == SND_SOC_BIAS_OFF) { |
1031 | ret = snd_soc_dapm_set_bias_level(socdev, | |
1032 | SND_SOC_BIAS_STANDBY); | |
1033 | if (ret != 0) | |
1034 | pr_err("Failed to turn on bias: %d\n", ret); | |
1035 | } | |
1036 | ||
452c5eaa MB |
1037 | /* If we're changing to all on or all off then prepare */ |
1038 | if ((sys_power && codec->bias_level == SND_SOC_BIAS_STANDBY) || | |
1039 | (!sys_power && codec->bias_level == SND_SOC_BIAS_ON)) { | |
1040 | ret = snd_soc_dapm_set_bias_level(socdev, | |
1041 | SND_SOC_BIAS_PREPARE); | |
1042 | if (ret != 0) | |
1043 | pr_err("Failed to prepare bias: %d\n", ret); | |
1044 | } | |
1045 | ||
6d3ddc81 | 1046 | /* Power down widgets first; try to avoid amplifying pops. */ |
291f3bbc | 1047 | dapm_seq_run(codec, &down_list, event, dapm_down_seq); |
2b97eabc | 1048 | |
6d3ddc81 | 1049 | /* Now power up. */ |
291f3bbc | 1050 | dapm_seq_run(codec, &up_list, event, dapm_up_seq); |
2b97eabc | 1051 | |
452c5eaa MB |
1052 | /* If we just powered the last thing off drop to standby bias */ |
1053 | if (codec->bias_level == SND_SOC_BIAS_PREPARE && !sys_power) { | |
1054 | ret = snd_soc_dapm_set_bias_level(socdev, | |
1055 | SND_SOC_BIAS_STANDBY); | |
1056 | if (ret != 0) | |
1057 | pr_err("Failed to apply standby bias: %d\n", ret); | |
1058 | } | |
1059 | ||
a96ca338 MB |
1060 | /* If we're in standby and can support bias off then do that */ |
1061 | if (codec->bias_level == SND_SOC_BIAS_STANDBY && | |
1062 | codec->idle_bias_off) { | |
1063 | ret = snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_OFF); | |
1064 | if (ret != 0) | |
1065 | pr_err("Failed to turn off bias: %d\n", ret); | |
1066 | } | |
1067 | ||
452c5eaa MB |
1068 | /* If we just powered up then move to active bias */ |
1069 | if (codec->bias_level == SND_SOC_BIAS_PREPARE && sys_power) { | |
1070 | ret = snd_soc_dapm_set_bias_level(socdev, | |
1071 | SND_SOC_BIAS_ON); | |
1072 | if (ret != 0) | |
1073 | pr_err("Failed to apply active bias: %d\n", ret); | |
1074 | } | |
1075 | ||
cb507e7e MB |
1076 | pop_dbg(codec->pop_time, "DAPM sequencing finished, waiting %dms\n", |
1077 | codec->pop_time); | |
1078 | ||
42aa3418 | 1079 | return 0; |
2b97eabc RP |
1080 | } |
1081 | ||
79fb9387 MB |
1082 | #ifdef CONFIG_DEBUG_FS |
1083 | static int dapm_widget_power_open_file(struct inode *inode, struct file *file) | |
1084 | { | |
1085 | file->private_data = inode->i_private; | |
1086 | return 0; | |
1087 | } | |
1088 | ||
1089 | static ssize_t dapm_widget_power_read_file(struct file *file, | |
1090 | char __user *user_buf, | |
1091 | size_t count, loff_t *ppos) | |
1092 | { | |
1093 | struct snd_soc_dapm_widget *w = file->private_data; | |
1094 | char *buf; | |
1095 | int in, out; | |
1096 | ssize_t ret; | |
1097 | struct snd_soc_dapm_path *p = NULL; | |
1098 | ||
1099 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); | |
1100 | if (!buf) | |
1101 | return -ENOMEM; | |
1102 | ||
1103 | in = is_connected_input_ep(w); | |
1104 | dapm_clear_walk(w->codec); | |
1105 | out = is_connected_output_ep(w); | |
1106 | dapm_clear_walk(w->codec); | |
1107 | ||
d033c36a | 1108 | ret = snprintf(buf, PAGE_SIZE, "%s: %s in %d out %d", |
79fb9387 MB |
1109 | w->name, w->power ? "On" : "Off", in, out); |
1110 | ||
d033c36a MB |
1111 | if (w->reg >= 0) |
1112 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
1113 | " - R%d(0x%x) bit %d", | |
1114 | w->reg, w->reg, w->shift); | |
1115 | ||
1116 | ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n"); | |
1117 | ||
3eef08ba MB |
1118 | if (w->sname) |
1119 | ret += snprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n", | |
1120 | w->sname, | |
1121 | w->active ? "active" : "inactive"); | |
79fb9387 MB |
1122 | |
1123 | list_for_each_entry(p, &w->sources, list_sink) { | |
215edda3 MB |
1124 | if (p->connected && !p->connected(w, p->sink)) |
1125 | continue; | |
1126 | ||
79fb9387 MB |
1127 | if (p->connect) |
1128 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
1129 | " in %s %s\n", | |
1130 | p->name ? p->name : "static", | |
1131 | p->source->name); | |
1132 | } | |
1133 | list_for_each_entry(p, &w->sinks, list_source) { | |
215edda3 MB |
1134 | if (p->connected && !p->connected(w, p->sink)) |
1135 | continue; | |
1136 | ||
79fb9387 MB |
1137 | if (p->connect) |
1138 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
1139 | " out %s %s\n", | |
1140 | p->name ? p->name : "static", | |
1141 | p->sink->name); | |
1142 | } | |
1143 | ||
1144 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); | |
1145 | ||
1146 | kfree(buf); | |
1147 | return ret; | |
1148 | } | |
1149 | ||
1150 | static const struct file_operations dapm_widget_power_fops = { | |
1151 | .open = dapm_widget_power_open_file, | |
1152 | .read = dapm_widget_power_read_file, | |
1153 | }; | |
1154 | ||
1155 | void snd_soc_dapm_debugfs_init(struct snd_soc_codec *codec) | |
1156 | { | |
1157 | struct snd_soc_dapm_widget *w; | |
1158 | struct dentry *d; | |
1159 | ||
1160 | if (!codec->debugfs_dapm) | |
1161 | return; | |
1162 | ||
1163 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
1164 | if (!w->name) | |
1165 | continue; | |
1166 | ||
1167 | d = debugfs_create_file(w->name, 0444, | |
1168 | codec->debugfs_dapm, w, | |
1169 | &dapm_widget_power_fops); | |
1170 | if (!d) | |
1171 | printk(KERN_WARNING | |
1172 | "ASoC: Failed to create %s debugfs file\n", | |
1173 | w->name); | |
1174 | } | |
1175 | } | |
1176 | #else | |
1177 | void snd_soc_dapm_debugfs_init(struct snd_soc_codec *codec) | |
1178 | { | |
1179 | } | |
1180 | #endif | |
1181 | ||
2b97eabc | 1182 | /* test and update the power status of a mux widget */ |
d9c96cf3 | 1183 | static int dapm_mux_update_power(struct snd_soc_dapm_widget *widget, |
3a65577d MB |
1184 | struct snd_kcontrol *kcontrol, int change, |
1185 | int mux, struct soc_enum *e) | |
2b97eabc RP |
1186 | { |
1187 | struct snd_soc_dapm_path *path; | |
1188 | int found = 0; | |
1189 | ||
eff317d0 PU |
1190 | if (widget->id != snd_soc_dapm_mux && |
1191 | widget->id != snd_soc_dapm_value_mux) | |
2b97eabc RP |
1192 | return -ENODEV; |
1193 | ||
3a65577d | 1194 | if (!change) |
2b97eabc RP |
1195 | return 0; |
1196 | ||
1197 | /* find dapm widget path assoc with kcontrol */ | |
1198 | list_for_each_entry(path, &widget->codec->dapm_paths, list) { | |
1199 | if (path->kcontrol != kcontrol) | |
1200 | continue; | |
1201 | ||
cb01e2b9 | 1202 | if (!path->name || !e->texts[mux]) |
2b97eabc RP |
1203 | continue; |
1204 | ||
1205 | found = 1; | |
1206 | /* we now need to match the string in the enum to the path */ | |
cb01e2b9 | 1207 | if (!(strcmp(path->name, e->texts[mux]))) |
2b97eabc RP |
1208 | path->connect = 1; /* new connection */ |
1209 | else | |
1210 | path->connect = 0; /* old connection must be powered down */ | |
1211 | } | |
1212 | ||
b91b8fa0 | 1213 | if (found) |
2b97eabc RP |
1214 | dapm_power_widgets(widget->codec, SND_SOC_DAPM_STREAM_NOP); |
1215 | ||
1216 | return 0; | |
1217 | } | |
2b97eabc | 1218 | |
1b075e3f | 1219 | /* test and update the power status of a mixer or switch widget */ |
d9c96cf3 | 1220 | static int dapm_mixer_update_power(struct snd_soc_dapm_widget *widget, |
283375ce | 1221 | struct snd_kcontrol *kcontrol, int connect) |
2b97eabc RP |
1222 | { |
1223 | struct snd_soc_dapm_path *path; | |
1224 | int found = 0; | |
1225 | ||
1b075e3f | 1226 | if (widget->id != snd_soc_dapm_mixer && |
ca9c1aae | 1227 | widget->id != snd_soc_dapm_mixer_named_ctl && |
1b075e3f | 1228 | widget->id != snd_soc_dapm_switch) |
2b97eabc RP |
1229 | return -ENODEV; |
1230 | ||
2b97eabc RP |
1231 | /* find dapm widget path assoc with kcontrol */ |
1232 | list_for_each_entry(path, &widget->codec->dapm_paths, list) { | |
1233 | if (path->kcontrol != kcontrol) | |
1234 | continue; | |
1235 | ||
1236 | /* found, now check type */ | |
1237 | found = 1; | |
283375ce | 1238 | path->connect = connect; |
2b97eabc RP |
1239 | break; |
1240 | } | |
1241 | ||
b91b8fa0 | 1242 | if (found) |
2b97eabc RP |
1243 | dapm_power_widgets(widget->codec, SND_SOC_DAPM_STREAM_NOP); |
1244 | ||
1245 | return 0; | |
1246 | } | |
2b97eabc RP |
1247 | |
1248 | /* show dapm widget status in sys fs */ | |
1249 | static ssize_t dapm_widget_show(struct device *dev, | |
1250 | struct device_attribute *attr, char *buf) | |
1251 | { | |
1252 | struct snd_soc_device *devdata = dev_get_drvdata(dev); | |
6627a653 | 1253 | struct snd_soc_codec *codec = devdata->card->codec; |
2b97eabc RP |
1254 | struct snd_soc_dapm_widget *w; |
1255 | int count = 0; | |
1256 | char *state = "not set"; | |
1257 | ||
1258 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
1259 | ||
1260 | /* only display widgets that burnm power */ | |
1261 | switch (w->id) { | |
1262 | case snd_soc_dapm_hp: | |
1263 | case snd_soc_dapm_mic: | |
1264 | case snd_soc_dapm_spk: | |
1265 | case snd_soc_dapm_line: | |
1266 | case snd_soc_dapm_micbias: | |
1267 | case snd_soc_dapm_dac: | |
1268 | case snd_soc_dapm_adc: | |
1269 | case snd_soc_dapm_pga: | |
1270 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1271 | case snd_soc_dapm_mixer_named_ctl: |
246d0a17 | 1272 | case snd_soc_dapm_supply: |
2b97eabc RP |
1273 | if (w->name) |
1274 | count += sprintf(buf + count, "%s: %s\n", | |
1275 | w->name, w->power ? "On":"Off"); | |
1276 | break; | |
1277 | default: | |
1278 | break; | |
1279 | } | |
1280 | } | |
1281 | ||
0be9898a MB |
1282 | switch (codec->bias_level) { |
1283 | case SND_SOC_BIAS_ON: | |
1284 | state = "On"; | |
2b97eabc | 1285 | break; |
0be9898a MB |
1286 | case SND_SOC_BIAS_PREPARE: |
1287 | state = "Prepare"; | |
2b97eabc | 1288 | break; |
0be9898a MB |
1289 | case SND_SOC_BIAS_STANDBY: |
1290 | state = "Standby"; | |
2b97eabc | 1291 | break; |
0be9898a MB |
1292 | case SND_SOC_BIAS_OFF: |
1293 | state = "Off"; | |
2b97eabc RP |
1294 | break; |
1295 | } | |
1296 | count += sprintf(buf + count, "PM State: %s\n", state); | |
1297 | ||
1298 | return count; | |
1299 | } | |
1300 | ||
1301 | static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL); | |
1302 | ||
1303 | int snd_soc_dapm_sys_add(struct device *dev) | |
1304 | { | |
12ef193d | 1305 | return device_create_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1306 | } |
1307 | ||
1308 | static void snd_soc_dapm_sys_remove(struct device *dev) | |
1309 | { | |
aef90843 | 1310 | device_remove_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1311 | } |
1312 | ||
1313 | /* free all dapm widgets and resources */ | |
d9c96cf3 | 1314 | static void dapm_free_widgets(struct snd_soc_codec *codec) |
2b97eabc RP |
1315 | { |
1316 | struct snd_soc_dapm_widget *w, *next_w; | |
1317 | struct snd_soc_dapm_path *p, *next_p; | |
1318 | ||
1319 | list_for_each_entry_safe(w, next_w, &codec->dapm_widgets, list) { | |
1320 | list_del(&w->list); | |
1321 | kfree(w); | |
1322 | } | |
1323 | ||
1324 | list_for_each_entry_safe(p, next_p, &codec->dapm_paths, list) { | |
1325 | list_del(&p->list); | |
1326 | kfree(p->long_name); | |
1327 | kfree(p); | |
1328 | } | |
1329 | } | |
1330 | ||
a5302181 | 1331 | static int snd_soc_dapm_set_pin(struct snd_soc_codec *codec, |
1649923d | 1332 | const char *pin, int status) |
a5302181 LG |
1333 | { |
1334 | struct snd_soc_dapm_widget *w; | |
1335 | ||
1336 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
1337 | if (!strcmp(w->name, pin)) { | |
c1286b86 | 1338 | pr_debug("dapm: %s: pin %s\n", codec->name, pin); |
a5302181 LG |
1339 | w->connected = status; |
1340 | return 0; | |
1341 | } | |
1342 | } | |
1343 | ||
c1286b86 | 1344 | pr_err("dapm: %s: configuring unknown pin %s\n", codec->name, pin); |
a5302181 LG |
1345 | return -EINVAL; |
1346 | } | |
1347 | ||
2b97eabc | 1348 | /** |
a5302181 | 1349 | * snd_soc_dapm_sync - scan and power dapm paths |
2b97eabc RP |
1350 | * @codec: audio codec |
1351 | * | |
1352 | * Walks all dapm audio paths and powers widgets according to their | |
1353 | * stream or path usage. | |
1354 | * | |
1355 | * Returns 0 for success. | |
1356 | */ | |
a5302181 | 1357 | int snd_soc_dapm_sync(struct snd_soc_codec *codec) |
2b97eabc | 1358 | { |
b91b8fa0 | 1359 | return dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc | 1360 | } |
a5302181 | 1361 | EXPORT_SYMBOL_GPL(snd_soc_dapm_sync); |
2b97eabc | 1362 | |
105f1c28 | 1363 | static int snd_soc_dapm_add_route(struct snd_soc_codec *codec, |
215edda3 | 1364 | const struct snd_soc_dapm_route *route) |
2b97eabc RP |
1365 | { |
1366 | struct snd_soc_dapm_path *path; | |
1367 | struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w; | |
215edda3 MB |
1368 | const char *sink = route->sink; |
1369 | const char *control = route->control; | |
1370 | const char *source = route->source; | |
2b97eabc RP |
1371 | int ret = 0; |
1372 | ||
1373 | /* find src and dest widgets */ | |
1374 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
1375 | ||
1376 | if (!wsink && !(strcmp(w->name, sink))) { | |
1377 | wsink = w; | |
1378 | continue; | |
1379 | } | |
1380 | if (!wsource && !(strcmp(w->name, source))) { | |
1381 | wsource = w; | |
1382 | } | |
1383 | } | |
1384 | ||
1385 | if (wsource == NULL || wsink == NULL) | |
1386 | return -ENODEV; | |
1387 | ||
1388 | path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL); | |
1389 | if (!path) | |
1390 | return -ENOMEM; | |
1391 | ||
1392 | path->source = wsource; | |
1393 | path->sink = wsink; | |
215edda3 | 1394 | path->connected = route->connected; |
2b97eabc RP |
1395 | INIT_LIST_HEAD(&path->list); |
1396 | INIT_LIST_HEAD(&path->list_source); | |
1397 | INIT_LIST_HEAD(&path->list_sink); | |
1398 | ||
1399 | /* check for external widgets */ | |
1400 | if (wsink->id == snd_soc_dapm_input) { | |
1401 | if (wsource->id == snd_soc_dapm_micbias || | |
1402 | wsource->id == snd_soc_dapm_mic || | |
087d53ab RC |
1403 | wsource->id == snd_soc_dapm_line || |
1404 | wsource->id == snd_soc_dapm_output) | |
2b97eabc RP |
1405 | wsink->ext = 1; |
1406 | } | |
1407 | if (wsource->id == snd_soc_dapm_output) { | |
1408 | if (wsink->id == snd_soc_dapm_spk || | |
1409 | wsink->id == snd_soc_dapm_hp || | |
1e39221e SF |
1410 | wsink->id == snd_soc_dapm_line || |
1411 | wsink->id == snd_soc_dapm_input) | |
2b97eabc RP |
1412 | wsource->ext = 1; |
1413 | } | |
1414 | ||
1415 | /* connect static paths */ | |
1416 | if (control == NULL) { | |
1417 | list_add(&path->list, &codec->dapm_paths); | |
1418 | list_add(&path->list_sink, &wsink->sources); | |
1419 | list_add(&path->list_source, &wsource->sinks); | |
1420 | path->connect = 1; | |
1421 | return 0; | |
1422 | } | |
1423 | ||
1424 | /* connect dynamic paths */ | |
1425 | switch(wsink->id) { | |
1426 | case snd_soc_dapm_adc: | |
1427 | case snd_soc_dapm_dac: | |
1428 | case snd_soc_dapm_pga: | |
1429 | case snd_soc_dapm_input: | |
1430 | case snd_soc_dapm_output: | |
1431 | case snd_soc_dapm_micbias: | |
1432 | case snd_soc_dapm_vmid: | |
1433 | case snd_soc_dapm_pre: | |
1434 | case snd_soc_dapm_post: | |
246d0a17 | 1435 | case snd_soc_dapm_supply: |
010ff262 MB |
1436 | case snd_soc_dapm_aif_in: |
1437 | case snd_soc_dapm_aif_out: | |
2b97eabc RP |
1438 | list_add(&path->list, &codec->dapm_paths); |
1439 | list_add(&path->list_sink, &wsink->sources); | |
1440 | list_add(&path->list_source, &wsource->sinks); | |
1441 | path->connect = 1; | |
1442 | return 0; | |
1443 | case snd_soc_dapm_mux: | |
74155556 | 1444 | case snd_soc_dapm_value_mux: |
2b97eabc RP |
1445 | ret = dapm_connect_mux(codec, wsource, wsink, path, control, |
1446 | &wsink->kcontrols[0]); | |
1447 | if (ret != 0) | |
1448 | goto err; | |
1449 | break; | |
1450 | case snd_soc_dapm_switch: | |
1451 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1452 | case snd_soc_dapm_mixer_named_ctl: |
2b97eabc RP |
1453 | ret = dapm_connect_mixer(codec, wsource, wsink, path, control); |
1454 | if (ret != 0) | |
1455 | goto err; | |
1456 | break; | |
1457 | case snd_soc_dapm_hp: | |
1458 | case snd_soc_dapm_mic: | |
1459 | case snd_soc_dapm_line: | |
1460 | case snd_soc_dapm_spk: | |
1461 | list_add(&path->list, &codec->dapm_paths); | |
1462 | list_add(&path->list_sink, &wsink->sources); | |
1463 | list_add(&path->list_source, &wsource->sinks); | |
1464 | path->connect = 0; | |
1465 | return 0; | |
1466 | } | |
1467 | return 0; | |
1468 | ||
1469 | err: | |
1470 | printk(KERN_WARNING "asoc: no dapm match for %s --> %s --> %s\n", source, | |
1471 | control, sink); | |
1472 | kfree(path); | |
1473 | return ret; | |
1474 | } | |
105f1c28 | 1475 | |
105f1c28 MB |
1476 | /** |
1477 | * snd_soc_dapm_add_routes - Add routes between DAPM widgets | |
1478 | * @codec: codec | |
1479 | * @route: audio routes | |
1480 | * @num: number of routes | |
1481 | * | |
1482 | * Connects 2 dapm widgets together via a named audio path. The sink is | |
1483 | * the widget receiving the audio signal, whilst the source is the sender | |
1484 | * of the audio signal. | |
1485 | * | |
1486 | * Returns 0 for success else error. On error all resources can be freed | |
1487 | * with a call to snd_soc_card_free(). | |
1488 | */ | |
1489 | int snd_soc_dapm_add_routes(struct snd_soc_codec *codec, | |
1490 | const struct snd_soc_dapm_route *route, int num) | |
1491 | { | |
1492 | int i, ret; | |
1493 | ||
1494 | for (i = 0; i < num; i++) { | |
215edda3 | 1495 | ret = snd_soc_dapm_add_route(codec, route); |
105f1c28 MB |
1496 | if (ret < 0) { |
1497 | printk(KERN_ERR "Failed to add route %s->%s\n", | |
1498 | route->source, | |
1499 | route->sink); | |
1500 | return ret; | |
1501 | } | |
1502 | route++; | |
1503 | } | |
1504 | ||
1505 | return 0; | |
1506 | } | |
1507 | EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes); | |
1508 | ||
2b97eabc RP |
1509 | /** |
1510 | * snd_soc_dapm_new_widgets - add new dapm widgets | |
1511 | * @codec: audio codec | |
1512 | * | |
1513 | * Checks the codec for any new dapm widgets and creates them if found. | |
1514 | * | |
1515 | * Returns 0 for success. | |
1516 | */ | |
1517 | int snd_soc_dapm_new_widgets(struct snd_soc_codec *codec) | |
1518 | { | |
1519 | struct snd_soc_dapm_widget *w; | |
1520 | ||
2b97eabc RP |
1521 | list_for_each_entry(w, &codec->dapm_widgets, list) |
1522 | { | |
1523 | if (w->new) | |
1524 | continue; | |
1525 | ||
1526 | switch(w->id) { | |
1527 | case snd_soc_dapm_switch: | |
1528 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1529 | case snd_soc_dapm_mixer_named_ctl: |
b75576d7 | 1530 | w->power_check = dapm_generic_check_power; |
2b97eabc RP |
1531 | dapm_new_mixer(codec, w); |
1532 | break; | |
1533 | case snd_soc_dapm_mux: | |
2e72f8e3 | 1534 | case snd_soc_dapm_value_mux: |
b75576d7 | 1535 | w->power_check = dapm_generic_check_power; |
2b97eabc RP |
1536 | dapm_new_mux(codec, w); |
1537 | break; | |
1538 | case snd_soc_dapm_adc: | |
010ff262 | 1539 | case snd_soc_dapm_aif_out: |
b75576d7 MB |
1540 | w->power_check = dapm_adc_check_power; |
1541 | break; | |
2b97eabc | 1542 | case snd_soc_dapm_dac: |
010ff262 | 1543 | case snd_soc_dapm_aif_in: |
b75576d7 MB |
1544 | w->power_check = dapm_dac_check_power; |
1545 | break; | |
2b97eabc | 1546 | case snd_soc_dapm_pga: |
b75576d7 | 1547 | w->power_check = dapm_generic_check_power; |
2b97eabc RP |
1548 | dapm_new_pga(codec, w); |
1549 | break; | |
1550 | case snd_soc_dapm_input: | |
1551 | case snd_soc_dapm_output: | |
1552 | case snd_soc_dapm_micbias: | |
1553 | case snd_soc_dapm_spk: | |
1554 | case snd_soc_dapm_hp: | |
1555 | case snd_soc_dapm_mic: | |
1556 | case snd_soc_dapm_line: | |
b75576d7 MB |
1557 | w->power_check = dapm_generic_check_power; |
1558 | break; | |
246d0a17 MB |
1559 | case snd_soc_dapm_supply: |
1560 | w->power_check = dapm_supply_check_power; | |
2b97eabc RP |
1561 | case snd_soc_dapm_vmid: |
1562 | case snd_soc_dapm_pre: | |
1563 | case snd_soc_dapm_post: | |
1564 | break; | |
1565 | } | |
1566 | w->new = 1; | |
1567 | } | |
1568 | ||
1569 | dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP); | |
2b97eabc RP |
1570 | return 0; |
1571 | } | |
1572 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets); | |
1573 | ||
1574 | /** | |
1575 | * snd_soc_dapm_get_volsw - dapm mixer get callback | |
1576 | * @kcontrol: mixer control | |
ac11a2b3 | 1577 | * @ucontrol: control element information |
2b97eabc RP |
1578 | * |
1579 | * Callback to get the value of a dapm mixer control. | |
1580 | * | |
1581 | * Returns 0 for success. | |
1582 | */ | |
1583 | int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol, | |
1584 | struct snd_ctl_elem_value *ucontrol) | |
1585 | { | |
1586 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
4eaa9819 JS |
1587 | struct soc_mixer_control *mc = |
1588 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
1589 | unsigned int reg = mc->reg; |
1590 | unsigned int shift = mc->shift; | |
1591 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1592 | int max = mc->max; |
815ecf8d JS |
1593 | unsigned int invert = mc->invert; |
1594 | unsigned int mask = (1 << fls(max)) - 1; | |
2b97eabc RP |
1595 | |
1596 | /* return the saved value if we are powered down */ | |
1597 | if (widget->id == snd_soc_dapm_pga && !widget->power) { | |
1598 | ucontrol->value.integer.value[0] = widget->saved_value; | |
1599 | return 0; | |
1600 | } | |
1601 | ||
1602 | ucontrol->value.integer.value[0] = | |
1603 | (snd_soc_read(widget->codec, reg) >> shift) & mask; | |
1604 | if (shift != rshift) | |
1605 | ucontrol->value.integer.value[1] = | |
1606 | (snd_soc_read(widget->codec, reg) >> rshift) & mask; | |
1607 | if (invert) { | |
1608 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1609 | max - ucontrol->value.integer.value[0]; |
2b97eabc RP |
1610 | if (shift != rshift) |
1611 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 1612 | max - ucontrol->value.integer.value[1]; |
2b97eabc RP |
1613 | } |
1614 | ||
1615 | return 0; | |
1616 | } | |
1617 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw); | |
1618 | ||
1619 | /** | |
1620 | * snd_soc_dapm_put_volsw - dapm mixer set callback | |
1621 | * @kcontrol: mixer control | |
ac11a2b3 | 1622 | * @ucontrol: control element information |
2b97eabc RP |
1623 | * |
1624 | * Callback to set the value of a dapm mixer control. | |
1625 | * | |
1626 | * Returns 0 for success. | |
1627 | */ | |
1628 | int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, | |
1629 | struct snd_ctl_elem_value *ucontrol) | |
1630 | { | |
1631 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
4eaa9819 JS |
1632 | struct soc_mixer_control *mc = |
1633 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
1634 | unsigned int reg = mc->reg; |
1635 | unsigned int shift = mc->shift; | |
1636 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1637 | int max = mc->max; |
815ecf8d JS |
1638 | unsigned int mask = (1 << fls(max)) - 1; |
1639 | unsigned int invert = mc->invert; | |
46f5822f | 1640 | unsigned int val, val2, val_mask; |
283375ce | 1641 | int connect; |
2b97eabc RP |
1642 | int ret; |
1643 | ||
1644 | val = (ucontrol->value.integer.value[0] & mask); | |
1645 | ||
1646 | if (invert) | |
a7a4ac86 | 1647 | val = max - val; |
2b97eabc RP |
1648 | val_mask = mask << shift; |
1649 | val = val << shift; | |
1650 | if (shift != rshift) { | |
1651 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1652 | if (invert) | |
a7a4ac86 | 1653 | val2 = max - val2; |
2b97eabc RP |
1654 | val_mask |= mask << rshift; |
1655 | val |= val2 << rshift; | |
1656 | } | |
1657 | ||
1658 | mutex_lock(&widget->codec->mutex); | |
1659 | widget->value = val; | |
1660 | ||
1661 | /* save volume value if the widget is powered down */ | |
1662 | if (widget->id == snd_soc_dapm_pga && !widget->power) { | |
1663 | widget->saved_value = val; | |
1664 | mutex_unlock(&widget->codec->mutex); | |
1665 | return 1; | |
1666 | } | |
1667 | ||
283375ce MB |
1668 | if (snd_soc_test_bits(widget->codec, reg, val_mask, val)) { |
1669 | if (val) | |
1670 | /* new connection */ | |
1671 | connect = invert ? 0:1; | |
1672 | else | |
1673 | /* old connection must be powered down */ | |
1674 | connect = invert ? 1:0; | |
1675 | ||
1676 | dapm_mixer_update_power(widget, kcontrol, connect); | |
1677 | } | |
1678 | ||
2b97eabc RP |
1679 | if (widget->event) { |
1680 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
9af6d956 LG |
1681 | ret = widget->event(widget, kcontrol, |
1682 | SND_SOC_DAPM_PRE_REG); | |
1683 | if (ret < 0) { | |
1684 | ret = 1; | |
2b97eabc | 1685 | goto out; |
9af6d956 | 1686 | } |
2b97eabc RP |
1687 | } |
1688 | ret = snd_soc_update_bits(widget->codec, reg, val_mask, val); | |
1689 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
9af6d956 LG |
1690 | ret = widget->event(widget, kcontrol, |
1691 | SND_SOC_DAPM_POST_REG); | |
2b97eabc RP |
1692 | } else |
1693 | ret = snd_soc_update_bits(widget->codec, reg, val_mask, val); | |
1694 | ||
1695 | out: | |
1696 | mutex_unlock(&widget->codec->mutex); | |
1697 | return ret; | |
1698 | } | |
1699 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw); | |
1700 | ||
1701 | /** | |
1702 | * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback | |
1703 | * @kcontrol: mixer control | |
ac11a2b3 | 1704 | * @ucontrol: control element information |
2b97eabc RP |
1705 | * |
1706 | * Callback to get the value of a dapm enumerated double mixer control. | |
1707 | * | |
1708 | * Returns 0 for success. | |
1709 | */ | |
1710 | int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol, | |
1711 | struct snd_ctl_elem_value *ucontrol) | |
1712 | { | |
1713 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1714 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
46f5822f | 1715 | unsigned int val, bitmask; |
2b97eabc | 1716 | |
f8ba0b7b | 1717 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
1718 | ; |
1719 | val = snd_soc_read(widget->codec, e->reg); | |
1720 | ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1); | |
1721 | if (e->shift_l != e->shift_r) | |
1722 | ucontrol->value.enumerated.item[1] = | |
1723 | (val >> e->shift_r) & (bitmask - 1); | |
1724 | ||
1725 | return 0; | |
1726 | } | |
1727 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double); | |
1728 | ||
1729 | /** | |
1730 | * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback | |
1731 | * @kcontrol: mixer control | |
ac11a2b3 | 1732 | * @ucontrol: control element information |
2b97eabc RP |
1733 | * |
1734 | * Callback to set the value of a dapm enumerated double mixer control. | |
1735 | * | |
1736 | * Returns 0 for success. | |
1737 | */ | |
1738 | int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, | |
1739 | struct snd_ctl_elem_value *ucontrol) | |
1740 | { | |
1741 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1742 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
3a65577d | 1743 | unsigned int val, mux, change; |
46f5822f | 1744 | unsigned int mask, bitmask; |
2b97eabc RP |
1745 | int ret = 0; |
1746 | ||
f8ba0b7b | 1747 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc | 1748 | ; |
f8ba0b7b | 1749 | if (ucontrol->value.enumerated.item[0] > e->max - 1) |
2b97eabc RP |
1750 | return -EINVAL; |
1751 | mux = ucontrol->value.enumerated.item[0]; | |
1752 | val = mux << e->shift_l; | |
1753 | mask = (bitmask - 1) << e->shift_l; | |
1754 | if (e->shift_l != e->shift_r) { | |
f8ba0b7b | 1755 | if (ucontrol->value.enumerated.item[1] > e->max - 1) |
2b97eabc RP |
1756 | return -EINVAL; |
1757 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
1758 | mask |= (bitmask - 1) << e->shift_r; | |
1759 | } | |
1760 | ||
1761 | mutex_lock(&widget->codec->mutex); | |
1762 | widget->value = val; | |
3a65577d MB |
1763 | change = snd_soc_test_bits(widget->codec, e->reg, mask, val); |
1764 | dapm_mux_update_power(widget, kcontrol, change, mux, e); | |
1642e3d4 MB |
1765 | |
1766 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
1767 | ret = widget->event(widget, | |
1768 | kcontrol, SND_SOC_DAPM_PRE_REG); | |
1769 | if (ret < 0) | |
1770 | goto out; | |
1771 | } | |
1772 | ||
1773 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1774 | ||
1775 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
1776 | ret = widget->event(widget, | |
1777 | kcontrol, SND_SOC_DAPM_POST_REG); | |
2b97eabc RP |
1778 | |
1779 | out: | |
1780 | mutex_unlock(&widget->codec->mutex); | |
1781 | return ret; | |
1782 | } | |
1783 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double); | |
1784 | ||
d2b247a8 MB |
1785 | /** |
1786 | * snd_soc_dapm_get_enum_virt - Get virtual DAPM mux | |
1787 | * @kcontrol: mixer control | |
1788 | * @ucontrol: control element information | |
1789 | * | |
1790 | * Returns 0 for success. | |
1791 | */ | |
1792 | int snd_soc_dapm_get_enum_virt(struct snd_kcontrol *kcontrol, | |
1793 | struct snd_ctl_elem_value *ucontrol) | |
1794 | { | |
1795 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1796 | ||
1797 | ucontrol->value.enumerated.item[0] = widget->value; | |
1798 | ||
1799 | return 0; | |
1800 | } | |
1801 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_virt); | |
1802 | ||
1803 | /** | |
1804 | * snd_soc_dapm_put_enum_virt - Set virtual DAPM mux | |
1805 | * @kcontrol: mixer control | |
1806 | * @ucontrol: control element information | |
1807 | * | |
1808 | * Returns 0 for success. | |
1809 | */ | |
1810 | int snd_soc_dapm_put_enum_virt(struct snd_kcontrol *kcontrol, | |
1811 | struct snd_ctl_elem_value *ucontrol) | |
1812 | { | |
1813 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1814 | struct soc_enum *e = | |
1815 | (struct soc_enum *)kcontrol->private_value; | |
1816 | int change; | |
1817 | int ret = 0; | |
1818 | ||
1819 | if (ucontrol->value.enumerated.item[0] >= e->max) | |
1820 | return -EINVAL; | |
1821 | ||
1822 | mutex_lock(&widget->codec->mutex); | |
1823 | ||
1824 | change = widget->value != ucontrol->value.enumerated.item[0]; | |
1825 | widget->value = ucontrol->value.enumerated.item[0]; | |
1826 | dapm_mux_update_power(widget, kcontrol, change, widget->value, e); | |
1827 | ||
1828 | mutex_unlock(&widget->codec->mutex); | |
1829 | return ret; | |
1830 | } | |
1831 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt); | |
1832 | ||
2e72f8e3 PU |
1833 | /** |
1834 | * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get | |
1835 | * callback | |
1836 | * @kcontrol: mixer control | |
1837 | * @ucontrol: control element information | |
1838 | * | |
1839 | * Callback to get the value of a dapm semi enumerated double mixer control. | |
1840 | * | |
1841 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
1842 | * used for handling bitfield coded enumeration for example. | |
1843 | * | |
1844 | * Returns 0 for success. | |
1845 | */ | |
1846 | int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol *kcontrol, | |
1847 | struct snd_ctl_elem_value *ucontrol) | |
1848 | { | |
1849 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
74155556 | 1850 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f | 1851 | unsigned int reg_val, val, mux; |
2e72f8e3 PU |
1852 | |
1853 | reg_val = snd_soc_read(widget->codec, e->reg); | |
1854 | val = (reg_val >> e->shift_l) & e->mask; | |
1855 | for (mux = 0; mux < e->max; mux++) { | |
1856 | if (val == e->values[mux]) | |
1857 | break; | |
1858 | } | |
1859 | ucontrol->value.enumerated.item[0] = mux; | |
1860 | if (e->shift_l != e->shift_r) { | |
1861 | val = (reg_val >> e->shift_r) & e->mask; | |
1862 | for (mux = 0; mux < e->max; mux++) { | |
1863 | if (val == e->values[mux]) | |
1864 | break; | |
1865 | } | |
1866 | ucontrol->value.enumerated.item[1] = mux; | |
1867 | } | |
1868 | ||
1869 | return 0; | |
1870 | } | |
1871 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double); | |
1872 | ||
1873 | /** | |
1874 | * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set | |
1875 | * callback | |
1876 | * @kcontrol: mixer control | |
1877 | * @ucontrol: control element information | |
1878 | * | |
1879 | * Callback to set the value of a dapm semi enumerated double mixer control. | |
1880 | * | |
1881 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
1882 | * used for handling bitfield coded enumeration for example. | |
1883 | * | |
1884 | * Returns 0 for success. | |
1885 | */ | |
1886 | int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol, | |
1887 | struct snd_ctl_elem_value *ucontrol) | |
1888 | { | |
1889 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
74155556 | 1890 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
3a65577d | 1891 | unsigned int val, mux, change; |
46f5822f | 1892 | unsigned int mask; |
2e72f8e3 PU |
1893 | int ret = 0; |
1894 | ||
1895 | if (ucontrol->value.enumerated.item[0] > e->max - 1) | |
1896 | return -EINVAL; | |
1897 | mux = ucontrol->value.enumerated.item[0]; | |
1898 | val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l; | |
1899 | mask = e->mask << e->shift_l; | |
1900 | if (e->shift_l != e->shift_r) { | |
1901 | if (ucontrol->value.enumerated.item[1] > e->max - 1) | |
1902 | return -EINVAL; | |
1903 | val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r; | |
1904 | mask |= e->mask << e->shift_r; | |
1905 | } | |
1906 | ||
1907 | mutex_lock(&widget->codec->mutex); | |
1908 | widget->value = val; | |
3a65577d MB |
1909 | change = snd_soc_test_bits(widget->codec, e->reg, mask, val); |
1910 | dapm_mux_update_power(widget, kcontrol, change, mux, e); | |
1642e3d4 MB |
1911 | |
1912 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
1913 | ret = widget->event(widget, | |
1914 | kcontrol, SND_SOC_DAPM_PRE_REG); | |
1915 | if (ret < 0) | |
1916 | goto out; | |
1917 | } | |
1918 | ||
1919 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1920 | ||
1921 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
1922 | ret = widget->event(widget, | |
1923 | kcontrol, SND_SOC_DAPM_POST_REG); | |
2e72f8e3 PU |
1924 | |
1925 | out: | |
1926 | mutex_unlock(&widget->codec->mutex); | |
1927 | return ret; | |
1928 | } | |
1929 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double); | |
1930 | ||
8b37dbd2 MB |
1931 | /** |
1932 | * snd_soc_dapm_info_pin_switch - Info for a pin switch | |
1933 | * | |
1934 | * @kcontrol: mixer control | |
1935 | * @uinfo: control element information | |
1936 | * | |
1937 | * Callback to provide information about a pin switch control. | |
1938 | */ | |
1939 | int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol, | |
1940 | struct snd_ctl_elem_info *uinfo) | |
1941 | { | |
1942 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1943 | uinfo->count = 1; | |
1944 | uinfo->value.integer.min = 0; | |
1945 | uinfo->value.integer.max = 1; | |
1946 | ||
1947 | return 0; | |
1948 | } | |
1949 | EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch); | |
1950 | ||
1951 | /** | |
1952 | * snd_soc_dapm_get_pin_switch - Get information for a pin switch | |
1953 | * | |
1954 | * @kcontrol: mixer control | |
1955 | * @ucontrol: Value | |
1956 | */ | |
1957 | int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol, | |
1958 | struct snd_ctl_elem_value *ucontrol) | |
1959 | { | |
1960 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1961 | const char *pin = (const char *)kcontrol->private_value; | |
1962 | ||
1963 | mutex_lock(&codec->mutex); | |
1964 | ||
1965 | ucontrol->value.integer.value[0] = | |
1966 | snd_soc_dapm_get_pin_status(codec, pin); | |
1967 | ||
1968 | mutex_unlock(&codec->mutex); | |
1969 | ||
1970 | return 0; | |
1971 | } | |
1972 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch); | |
1973 | ||
1974 | /** | |
1975 | * snd_soc_dapm_put_pin_switch - Set information for a pin switch | |
1976 | * | |
1977 | * @kcontrol: mixer control | |
1978 | * @ucontrol: Value | |
1979 | */ | |
1980 | int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol, | |
1981 | struct snd_ctl_elem_value *ucontrol) | |
1982 | { | |
1983 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1984 | const char *pin = (const char *)kcontrol->private_value; | |
1985 | ||
1986 | mutex_lock(&codec->mutex); | |
1987 | ||
1988 | if (ucontrol->value.integer.value[0]) | |
1989 | snd_soc_dapm_enable_pin(codec, pin); | |
1990 | else | |
1991 | snd_soc_dapm_disable_pin(codec, pin); | |
1992 | ||
1993 | snd_soc_dapm_sync(codec); | |
1994 | ||
1995 | mutex_unlock(&codec->mutex); | |
1996 | ||
1997 | return 0; | |
1998 | } | |
1999 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch); | |
2000 | ||
2b97eabc RP |
2001 | /** |
2002 | * snd_soc_dapm_new_control - create new dapm control | |
2003 | * @codec: audio codec | |
2004 | * @widget: widget template | |
2005 | * | |
2006 | * Creates a new dapm control based upon the template. | |
2007 | * | |
2008 | * Returns 0 for success else error. | |
2009 | */ | |
2010 | int snd_soc_dapm_new_control(struct snd_soc_codec *codec, | |
2011 | const struct snd_soc_dapm_widget *widget) | |
2012 | { | |
2013 | struct snd_soc_dapm_widget *w; | |
2014 | ||
2015 | if ((w = dapm_cnew_widget(widget)) == NULL) | |
2016 | return -ENOMEM; | |
2017 | ||
2018 | w->codec = codec; | |
2019 | INIT_LIST_HEAD(&w->sources); | |
2020 | INIT_LIST_HEAD(&w->sinks); | |
2021 | INIT_LIST_HEAD(&w->list); | |
2022 | list_add(&w->list, &codec->dapm_widgets); | |
2023 | ||
2024 | /* machine layer set ups unconnected pins and insertions */ | |
2025 | w->connected = 1; | |
2026 | return 0; | |
2027 | } | |
2028 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control); | |
2029 | ||
4ba1327a MB |
2030 | /** |
2031 | * snd_soc_dapm_new_controls - create new dapm controls | |
2032 | * @codec: audio codec | |
2033 | * @widget: widget array | |
2034 | * @num: number of widgets | |
2035 | * | |
2036 | * Creates new DAPM controls based upon the templates. | |
2037 | * | |
2038 | * Returns 0 for success else error. | |
2039 | */ | |
2040 | int snd_soc_dapm_new_controls(struct snd_soc_codec *codec, | |
2041 | const struct snd_soc_dapm_widget *widget, | |
2042 | int num) | |
2043 | { | |
2044 | int i, ret; | |
2045 | ||
2046 | for (i = 0; i < num; i++) { | |
2047 | ret = snd_soc_dapm_new_control(codec, widget); | |
b8b33cb5 MB |
2048 | if (ret < 0) { |
2049 | printk(KERN_ERR | |
2050 | "ASoC: Failed to create DAPM control %s: %d\n", | |
2051 | widget->name, ret); | |
4ba1327a | 2052 | return ret; |
b8b33cb5 | 2053 | } |
4ba1327a MB |
2054 | widget++; |
2055 | } | |
2056 | return 0; | |
2057 | } | |
2058 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls); | |
2059 | ||
2060 | ||
2b97eabc RP |
2061 | /** |
2062 | * snd_soc_dapm_stream_event - send a stream event to the dapm core | |
2063 | * @codec: audio codec | |
2064 | * @stream: stream name | |
2065 | * @event: stream event | |
2066 | * | |
2067 | * Sends a stream event to the dapm core. The core then makes any | |
2068 | * necessary widget power changes. | |
2069 | * | |
2070 | * Returns 0 for success else error. | |
2071 | */ | |
2072 | int snd_soc_dapm_stream_event(struct snd_soc_codec *codec, | |
2073 | char *stream, int event) | |
2074 | { | |
2075 | struct snd_soc_dapm_widget *w; | |
2076 | ||
11da21a7 SF |
2077 | if (stream == NULL) |
2078 | return 0; | |
2079 | ||
2b97eabc RP |
2080 | mutex_lock(&codec->mutex); |
2081 | list_for_each_entry(w, &codec->dapm_widgets, list) | |
2082 | { | |
2083 | if (!w->sname) | |
2084 | continue; | |
c1286b86 MB |
2085 | pr_debug("widget %s\n %s stream %s event %d\n", |
2086 | w->name, w->sname, stream, event); | |
2b97eabc RP |
2087 | if (strstr(w->sname, stream)) { |
2088 | switch(event) { | |
2089 | case SND_SOC_DAPM_STREAM_START: | |
2090 | w->active = 1; | |
2091 | break; | |
2092 | case SND_SOC_DAPM_STREAM_STOP: | |
2093 | w->active = 0; | |
2094 | break; | |
2095 | case SND_SOC_DAPM_STREAM_SUSPEND: | |
2096 | if (w->active) | |
2097 | w->suspend = 1; | |
2098 | w->active = 0; | |
2099 | break; | |
2100 | case SND_SOC_DAPM_STREAM_RESUME: | |
2101 | if (w->suspend) { | |
2102 | w->active = 1; | |
2103 | w->suspend = 0; | |
2104 | } | |
2105 | break; | |
2106 | case SND_SOC_DAPM_STREAM_PAUSE_PUSH: | |
2107 | break; | |
2108 | case SND_SOC_DAPM_STREAM_PAUSE_RELEASE: | |
2109 | break; | |
2110 | } | |
2111 | } | |
2112 | } | |
2b97eabc RP |
2113 | |
2114 | dapm_power_widgets(codec, event); | |
8e8b2d67 | 2115 | mutex_unlock(&codec->mutex); |
2b97eabc RP |
2116 | return 0; |
2117 | } | |
2118 | EXPORT_SYMBOL_GPL(snd_soc_dapm_stream_event); | |
2119 | ||
2120 | /** | |
a5302181 | 2121 | * snd_soc_dapm_enable_pin - enable pin. |
ac11a2b3 | 2122 | * @codec: SoC codec |
a5302181 | 2123 | * @pin: pin name |
2b97eabc | 2124 | * |
74b8f955 | 2125 | * Enables input/output pin and its parents or children widgets iff there is |
a5302181 LG |
2126 | * a valid audio route and active audio stream. |
2127 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2128 | * do any widget power switching. | |
2b97eabc | 2129 | */ |
1649923d | 2130 | int snd_soc_dapm_enable_pin(struct snd_soc_codec *codec, const char *pin) |
2b97eabc | 2131 | { |
a5302181 LG |
2132 | return snd_soc_dapm_set_pin(codec, pin, 1); |
2133 | } | |
2134 | EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin); | |
2b97eabc | 2135 | |
a5302181 LG |
2136 | /** |
2137 | * snd_soc_dapm_disable_pin - disable pin. | |
2138 | * @codec: SoC codec | |
2139 | * @pin: pin name | |
2140 | * | |
74b8f955 | 2141 | * Disables input/output pin and its parents or children widgets. |
a5302181 LG |
2142 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to |
2143 | * do any widget power switching. | |
2144 | */ | |
1649923d | 2145 | int snd_soc_dapm_disable_pin(struct snd_soc_codec *codec, const char *pin) |
a5302181 LG |
2146 | { |
2147 | return snd_soc_dapm_set_pin(codec, pin, 0); | |
2b97eabc | 2148 | } |
a5302181 | 2149 | EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin); |
2b97eabc | 2150 | |
5817b52a MB |
2151 | /** |
2152 | * snd_soc_dapm_nc_pin - permanently disable pin. | |
2153 | * @codec: SoC codec | |
2154 | * @pin: pin name | |
2155 | * | |
2156 | * Marks the specified pin as being not connected, disabling it along | |
2157 | * any parent or child widgets. At present this is identical to | |
2158 | * snd_soc_dapm_disable_pin() but in future it will be extended to do | |
2159 | * additional things such as disabling controls which only affect | |
2160 | * paths through the pin. | |
2161 | * | |
2162 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2163 | * do any widget power switching. | |
2164 | */ | |
1649923d | 2165 | int snd_soc_dapm_nc_pin(struct snd_soc_codec *codec, const char *pin) |
5817b52a MB |
2166 | { |
2167 | return snd_soc_dapm_set_pin(codec, pin, 0); | |
2168 | } | |
2169 | EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin); | |
2170 | ||
eeec12bf | 2171 | /** |
a5302181 | 2172 | * snd_soc_dapm_get_pin_status - get audio pin status |
eeec12bf | 2173 | * @codec: audio codec |
a5302181 | 2174 | * @pin: audio signal pin endpoint (or start point) |
eeec12bf | 2175 | * |
a5302181 | 2176 | * Get audio pin status - connected or disconnected. |
eeec12bf | 2177 | * |
a5302181 | 2178 | * Returns 1 for connected otherwise 0. |
eeec12bf | 2179 | */ |
1649923d | 2180 | int snd_soc_dapm_get_pin_status(struct snd_soc_codec *codec, const char *pin) |
eeec12bf GG |
2181 | { |
2182 | struct snd_soc_dapm_widget *w; | |
2183 | ||
2184 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
a5302181 | 2185 | if (!strcmp(w->name, pin)) |
eeec12bf GG |
2186 | return w->connected; |
2187 | } | |
2188 | ||
2189 | return 0; | |
2190 | } | |
a5302181 | 2191 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status); |
eeec12bf | 2192 | |
2b97eabc RP |
2193 | /** |
2194 | * snd_soc_dapm_free - free dapm resources | |
2195 | * @socdev: SoC device | |
2196 | * | |
2197 | * Free all dapm widgets and resources. | |
2198 | */ | |
2199 | void snd_soc_dapm_free(struct snd_soc_device *socdev) | |
2200 | { | |
6627a653 | 2201 | struct snd_soc_codec *codec = socdev->card->codec; |
2b97eabc RP |
2202 | |
2203 | snd_soc_dapm_sys_remove(socdev->dev); | |
2204 | dapm_free_widgets(codec); | |
2205 | } | |
2206 | EXPORT_SYMBOL_GPL(snd_soc_dapm_free); | |
2207 | ||
51737470 MB |
2208 | /* |
2209 | * snd_soc_dapm_shutdown - callback for system shutdown | |
2210 | */ | |
2211 | void snd_soc_dapm_shutdown(struct snd_soc_device *socdev) | |
2212 | { | |
2213 | struct snd_soc_codec *codec = socdev->card->codec; | |
2214 | struct snd_soc_dapm_widget *w; | |
2215 | LIST_HEAD(down_list); | |
2216 | int powerdown = 0; | |
2217 | ||
2218 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
2219 | if (w->power) { | |
2220 | dapm_seq_insert(w, &down_list, dapm_down_seq); | |
c2caa4da | 2221 | w->power = 0; |
51737470 MB |
2222 | powerdown = 1; |
2223 | } | |
2224 | } | |
2225 | ||
2226 | /* If there were no widgets to power down we're already in | |
2227 | * standby. | |
2228 | */ | |
2229 | if (powerdown) { | |
2230 | snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_PREPARE); | |
2231 | dapm_seq_run(codec, &down_list, 0, dapm_down_seq); | |
2232 | snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_STANDBY); | |
2233 | } | |
2234 | ||
2235 | snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_OFF); | |
2236 | } | |
2237 | ||
2b97eabc | 2238 | /* Module information */ |
d331124d | 2239 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
2b97eabc RP |
2240 | MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC"); |
2241 | MODULE_LICENSE("GPL"); |