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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> | |
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 | ||
47 | /* debug */ | |
c1286b86 | 48 | #ifdef DEBUG |
2b97eabc | 49 | #define dump_dapm(codec, action) dbg_dump_dapm(codec, action) |
2b97eabc RP |
50 | #else |
51 | #define dump_dapm(codec, action) | |
2b97eabc RP |
52 | #endif |
53 | ||
2b97eabc RP |
54 | /* dapm power sequences - make this per codec in the future */ |
55 | static int dapm_up_seq[] = { | |
38357ab2 MB |
56 | [snd_soc_dapm_pre] = 0, |
57 | [snd_soc_dapm_supply] = 1, | |
58 | [snd_soc_dapm_micbias] = 2, | |
010ff262 MB |
59 | [snd_soc_dapm_aif_in] = 3, |
60 | [snd_soc_dapm_aif_out] = 3, | |
61 | [snd_soc_dapm_mic] = 4, | |
62 | [snd_soc_dapm_mux] = 5, | |
63 | [snd_soc_dapm_value_mux] = 5, | |
64 | [snd_soc_dapm_dac] = 6, | |
65 | [snd_soc_dapm_mixer] = 7, | |
66 | [snd_soc_dapm_mixer_named_ctl] = 7, | |
67 | [snd_soc_dapm_pga] = 8, | |
68 | [snd_soc_dapm_adc] = 9, | |
69 | [snd_soc_dapm_hp] = 10, | |
70 | [snd_soc_dapm_spk] = 10, | |
71 | [snd_soc_dapm_post] = 11, | |
2b97eabc | 72 | }; |
ca9c1aae | 73 | |
2b97eabc | 74 | static int dapm_down_seq[] = { |
38357ab2 MB |
75 | [snd_soc_dapm_pre] = 0, |
76 | [snd_soc_dapm_adc] = 1, | |
77 | [snd_soc_dapm_hp] = 2, | |
1ca04065 | 78 | [snd_soc_dapm_spk] = 2, |
38357ab2 MB |
79 | [snd_soc_dapm_pga] = 4, |
80 | [snd_soc_dapm_mixer_named_ctl] = 5, | |
e3d4dabd MB |
81 | [snd_soc_dapm_mixer] = 5, |
82 | [snd_soc_dapm_dac] = 6, | |
83 | [snd_soc_dapm_mic] = 7, | |
84 | [snd_soc_dapm_micbias] = 8, | |
85 | [snd_soc_dapm_mux] = 9, | |
86 | [snd_soc_dapm_value_mux] = 9, | |
010ff262 MB |
87 | [snd_soc_dapm_aif_in] = 10, |
88 | [snd_soc_dapm_aif_out] = 10, | |
89 | [snd_soc_dapm_supply] = 11, | |
90 | [snd_soc_dapm_post] = 12, | |
2b97eabc RP |
91 | }; |
92 | ||
12ef193d | 93 | static void pop_wait(u32 pop_time) |
15e4c72f MB |
94 | { |
95 | if (pop_time) | |
96 | schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time)); | |
97 | } | |
98 | ||
12ef193d | 99 | static void pop_dbg(u32 pop_time, const char *fmt, ...) |
15e4c72f MB |
100 | { |
101 | va_list args; | |
102 | ||
103 | va_start(args, fmt); | |
104 | ||
105 | if (pop_time) { | |
106 | vprintk(fmt, args); | |
12ef193d | 107 | pop_wait(pop_time); |
15e4c72f MB |
108 | } |
109 | ||
110 | va_end(args); | |
111 | } | |
112 | ||
2b97eabc | 113 | /* create a new dapm widget */ |
88cb4290 | 114 | static inline struct snd_soc_dapm_widget *dapm_cnew_widget( |
2b97eabc RP |
115 | const struct snd_soc_dapm_widget *_widget) |
116 | { | |
88cb4290 | 117 | return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL); |
2b97eabc RP |
118 | } |
119 | ||
452c5eaa MB |
120 | /** |
121 | * snd_soc_dapm_set_bias_level - set the bias level for the system | |
122 | * @socdev: audio device | |
123 | * @level: level to configure | |
124 | * | |
125 | * Configure the bias (power) levels for the SoC audio device. | |
126 | * | |
127 | * Returns 0 for success else error. | |
128 | */ | |
129 | static int snd_soc_dapm_set_bias_level(struct snd_soc_device *socdev, | |
130 | enum snd_soc_bias_level level) | |
131 | { | |
132 | struct snd_soc_card *card = socdev->card; | |
133 | struct snd_soc_codec *codec = socdev->card->codec; | |
134 | int ret = 0; | |
135 | ||
f83fba8b MB |
136 | switch (level) { |
137 | case SND_SOC_BIAS_ON: | |
138 | dev_dbg(socdev->dev, "Setting full bias\n"); | |
139 | break; | |
140 | case SND_SOC_BIAS_PREPARE: | |
141 | dev_dbg(socdev->dev, "Setting bias prepare\n"); | |
142 | break; | |
143 | case SND_SOC_BIAS_STANDBY: | |
144 | dev_dbg(socdev->dev, "Setting standby bias\n"); | |
145 | break; | |
146 | case SND_SOC_BIAS_OFF: | |
147 | dev_dbg(socdev->dev, "Setting bias off\n"); | |
148 | break; | |
149 | default: | |
150 | dev_err(socdev->dev, "Setting invalid bias %d\n", level); | |
151 | return -EINVAL; | |
152 | } | |
153 | ||
452c5eaa MB |
154 | if (card->set_bias_level) |
155 | ret = card->set_bias_level(card, level); | |
474e09ca MB |
156 | if (ret == 0) { |
157 | if (codec->set_bias_level) | |
158 | ret = codec->set_bias_level(codec, level); | |
159 | else | |
160 | codec->bias_level = level; | |
161 | } | |
452c5eaa MB |
162 | |
163 | return ret; | |
164 | } | |
165 | ||
2b97eabc RP |
166 | /* set up initial codec paths */ |
167 | static void dapm_set_path_status(struct snd_soc_dapm_widget *w, | |
168 | struct snd_soc_dapm_path *p, int i) | |
169 | { | |
170 | switch (w->id) { | |
171 | case snd_soc_dapm_switch: | |
ca9c1aae IM |
172 | case snd_soc_dapm_mixer: |
173 | case snd_soc_dapm_mixer_named_ctl: { | |
2b97eabc | 174 | int val; |
4eaa9819 JS |
175 | struct soc_mixer_control *mc = (struct soc_mixer_control *) |
176 | w->kcontrols[i].private_value; | |
815ecf8d JS |
177 | unsigned int reg = mc->reg; |
178 | unsigned int shift = mc->shift; | |
4eaa9819 | 179 | int max = mc->max; |
815ecf8d JS |
180 | unsigned int mask = (1 << fls(max)) - 1; |
181 | unsigned int invert = mc->invert; | |
2b97eabc RP |
182 | |
183 | val = snd_soc_read(w->codec, reg); | |
184 | val = (val >> shift) & mask; | |
185 | ||
186 | if ((invert && !val) || (!invert && val)) | |
187 | p->connect = 1; | |
188 | else | |
189 | p->connect = 0; | |
190 | } | |
191 | break; | |
192 | case snd_soc_dapm_mux: { | |
193 | struct soc_enum *e = (struct soc_enum *)w->kcontrols[i].private_value; | |
194 | int val, item, bitmask; | |
195 | ||
f8ba0b7b | 196 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
197 | ; |
198 | val = snd_soc_read(w->codec, e->reg); | |
199 | item = (val >> e->shift_l) & (bitmask - 1); | |
200 | ||
201 | p->connect = 0; | |
f8ba0b7b | 202 | for (i = 0; i < e->max; i++) { |
2b97eabc RP |
203 | if (!(strcmp(p->name, e->texts[i])) && item == i) |
204 | p->connect = 1; | |
205 | } | |
206 | } | |
207 | break; | |
2e72f8e3 | 208 | case snd_soc_dapm_value_mux: { |
74155556 | 209 | struct soc_enum *e = (struct soc_enum *) |
2e72f8e3 PU |
210 | w->kcontrols[i].private_value; |
211 | int val, item; | |
212 | ||
213 | val = snd_soc_read(w->codec, e->reg); | |
214 | val = (val >> e->shift_l) & e->mask; | |
215 | for (item = 0; item < e->max; item++) { | |
216 | if (val == e->values[item]) | |
217 | break; | |
218 | } | |
219 | ||
220 | p->connect = 0; | |
221 | for (i = 0; i < e->max; i++) { | |
222 | if (!(strcmp(p->name, e->texts[i])) && item == i) | |
223 | p->connect = 1; | |
224 | } | |
225 | } | |
226 | break; | |
2b97eabc RP |
227 | /* does not effect routing - always connected */ |
228 | case snd_soc_dapm_pga: | |
229 | case snd_soc_dapm_output: | |
230 | case snd_soc_dapm_adc: | |
231 | case snd_soc_dapm_input: | |
232 | case snd_soc_dapm_dac: | |
233 | case snd_soc_dapm_micbias: | |
234 | case snd_soc_dapm_vmid: | |
246d0a17 | 235 | case snd_soc_dapm_supply: |
010ff262 MB |
236 | case snd_soc_dapm_aif_in: |
237 | case snd_soc_dapm_aif_out: | |
2b97eabc RP |
238 | p->connect = 1; |
239 | break; | |
240 | /* does effect routing - dynamically connected */ | |
241 | case snd_soc_dapm_hp: | |
242 | case snd_soc_dapm_mic: | |
243 | case snd_soc_dapm_spk: | |
244 | case snd_soc_dapm_line: | |
245 | case snd_soc_dapm_pre: | |
246 | case snd_soc_dapm_post: | |
247 | p->connect = 0; | |
248 | break; | |
249 | } | |
250 | } | |
251 | ||
74b8f955 | 252 | /* connect mux widget to its interconnecting audio paths */ |
2b97eabc RP |
253 | static int dapm_connect_mux(struct snd_soc_codec *codec, |
254 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, | |
255 | struct snd_soc_dapm_path *path, const char *control_name, | |
256 | const struct snd_kcontrol_new *kcontrol) | |
257 | { | |
258 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
259 | int i; | |
260 | ||
f8ba0b7b | 261 | for (i = 0; i < e->max; i++) { |
2b97eabc RP |
262 | if (!(strcmp(control_name, e->texts[i]))) { |
263 | list_add(&path->list, &codec->dapm_paths); | |
264 | list_add(&path->list_sink, &dest->sources); | |
265 | list_add(&path->list_source, &src->sinks); | |
266 | path->name = (char*)e->texts[i]; | |
267 | dapm_set_path_status(dest, path, 0); | |
268 | return 0; | |
269 | } | |
270 | } | |
271 | ||
272 | return -ENODEV; | |
273 | } | |
274 | ||
74b8f955 | 275 | /* connect mixer widget to its interconnecting audio paths */ |
2b97eabc RP |
276 | static int dapm_connect_mixer(struct snd_soc_codec *codec, |
277 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, | |
278 | struct snd_soc_dapm_path *path, const char *control_name) | |
279 | { | |
280 | int i; | |
281 | ||
282 | /* search for mixer kcontrol */ | |
283 | for (i = 0; i < dest->num_kcontrols; i++) { | |
284 | if (!strcmp(control_name, dest->kcontrols[i].name)) { | |
285 | list_add(&path->list, &codec->dapm_paths); | |
286 | list_add(&path->list_sink, &dest->sources); | |
287 | list_add(&path->list_source, &src->sinks); | |
288 | path->name = dest->kcontrols[i].name; | |
289 | dapm_set_path_status(dest, path, i); | |
290 | return 0; | |
291 | } | |
292 | } | |
293 | return -ENODEV; | |
294 | } | |
295 | ||
296 | /* update dapm codec register bits */ | |
297 | static int dapm_update_bits(struct snd_soc_dapm_widget *widget) | |
298 | { | |
299 | int change, power; | |
46f5822f | 300 | unsigned int old, new; |
2b97eabc RP |
301 | struct snd_soc_codec *codec = widget->codec; |
302 | ||
303 | /* check for valid widgets */ | |
304 | if (widget->reg < 0 || widget->id == snd_soc_dapm_input || | |
305 | widget->id == snd_soc_dapm_output || | |
306 | widget->id == snd_soc_dapm_hp || | |
307 | widget->id == snd_soc_dapm_mic || | |
308 | widget->id == snd_soc_dapm_line || | |
309 | widget->id == snd_soc_dapm_spk) | |
310 | return 0; | |
311 | ||
312 | power = widget->power; | |
313 | if (widget->invert) | |
314 | power = (power ? 0:1); | |
315 | ||
316 | old = snd_soc_read(codec, widget->reg); | |
317 | new = (old & ~(0x1 << widget->shift)) | (power << widget->shift); | |
318 | ||
319 | change = old != new; | |
320 | if (change) { | |
12ef193d TK |
321 | pop_dbg(codec->pop_time, "pop test %s : %s in %d ms\n", |
322 | widget->name, widget->power ? "on" : "off", | |
323 | codec->pop_time); | |
2b97eabc | 324 | snd_soc_write(codec, widget->reg, new); |
12ef193d | 325 | pop_wait(codec->pop_time); |
2b97eabc | 326 | } |
c1286b86 MB |
327 | pr_debug("reg %x old %x new %x change %d\n", widget->reg, |
328 | old, new, change); | |
2b97eabc RP |
329 | return change; |
330 | } | |
331 | ||
332 | /* ramps the volume up or down to minimise pops before or after a | |
333 | * DAPM power event */ | |
334 | static int dapm_set_pga(struct snd_soc_dapm_widget *widget, int power) | |
335 | { | |
336 | const struct snd_kcontrol_new *k = widget->kcontrols; | |
337 | ||
338 | if (widget->muted && !power) | |
339 | return 0; | |
340 | if (!widget->muted && power) | |
341 | return 0; | |
342 | ||
343 | if (widget->num_kcontrols && k) { | |
4eaa9819 JS |
344 | struct soc_mixer_control *mc = |
345 | (struct soc_mixer_control *)k->private_value; | |
815ecf8d JS |
346 | unsigned int reg = mc->reg; |
347 | unsigned int shift = mc->shift; | |
4eaa9819 | 348 | int max = mc->max; |
815ecf8d JS |
349 | unsigned int mask = (1 << fls(max)) - 1; |
350 | unsigned int invert = mc->invert; | |
2b97eabc RP |
351 | |
352 | if (power) { | |
353 | int i; | |
354 | /* power up has happended, increase volume to last level */ | |
355 | if (invert) { | |
4eaa9819 | 356 | for (i = max; i > widget->saved_value; i--) |
2b97eabc RP |
357 | snd_soc_update_bits(widget->codec, reg, mask, i); |
358 | } else { | |
359 | for (i = 0; i < widget->saved_value; i++) | |
360 | snd_soc_update_bits(widget->codec, reg, mask, i); | |
361 | } | |
362 | widget->muted = 0; | |
363 | } else { | |
364 | /* power down is about to occur, decrease volume to mute */ | |
365 | int val = snd_soc_read(widget->codec, reg); | |
366 | int i = widget->saved_value = (val >> shift) & mask; | |
367 | if (invert) { | |
368 | for (; i < mask; i++) | |
369 | snd_soc_update_bits(widget->codec, reg, mask, i); | |
370 | } else { | |
371 | for (; i > 0; i--) | |
372 | snd_soc_update_bits(widget->codec, reg, mask, i); | |
373 | } | |
374 | widget->muted = 1; | |
375 | } | |
376 | } | |
377 | return 0; | |
378 | } | |
379 | ||
380 | /* create new dapm mixer control */ | |
381 | static int dapm_new_mixer(struct snd_soc_codec *codec, | |
382 | struct snd_soc_dapm_widget *w) | |
383 | { | |
384 | int i, ret = 0; | |
219b93f5 | 385 | size_t name_len; |
2b97eabc RP |
386 | struct snd_soc_dapm_path *path; |
387 | ||
388 | /* add kcontrol */ | |
389 | for (i = 0; i < w->num_kcontrols; i++) { | |
390 | ||
391 | /* match name */ | |
392 | list_for_each_entry(path, &w->sources, list_sink) { | |
393 | ||
394 | /* mixer/mux paths name must match control name */ | |
395 | if (path->name != (char*)w->kcontrols[i].name) | |
396 | continue; | |
397 | ||
ca9c1aae IM |
398 | /* add dapm control with long name. |
399 | * for dapm_mixer this is the concatenation of the | |
400 | * mixer and kcontrol name. | |
401 | * for dapm_mixer_named_ctl this is simply the | |
402 | * kcontrol name. | |
403 | */ | |
404 | name_len = strlen(w->kcontrols[i].name) + 1; | |
07495f3e | 405 | if (w->id != snd_soc_dapm_mixer_named_ctl) |
ca9c1aae IM |
406 | name_len += 1 + strlen(w->name); |
407 | ||
219b93f5 | 408 | path->long_name = kmalloc(name_len, GFP_KERNEL); |
ca9c1aae | 409 | |
2b97eabc RP |
410 | if (path->long_name == NULL) |
411 | return -ENOMEM; | |
412 | ||
ca9c1aae | 413 | switch (w->id) { |
ca9c1aae IM |
414 | default: |
415 | snprintf(path->long_name, name_len, "%s %s", | |
416 | w->name, w->kcontrols[i].name); | |
07495f3e | 417 | break; |
ca9c1aae IM |
418 | case snd_soc_dapm_mixer_named_ctl: |
419 | snprintf(path->long_name, name_len, "%s", | |
420 | w->kcontrols[i].name); | |
07495f3e | 421 | break; |
ca9c1aae IM |
422 | } |
423 | ||
219b93f5 MB |
424 | path->long_name[name_len - 1] = '\0'; |
425 | ||
2b97eabc RP |
426 | path->kcontrol = snd_soc_cnew(&w->kcontrols[i], w, |
427 | path->long_name); | |
428 | ret = snd_ctl_add(codec->card, path->kcontrol); | |
429 | if (ret < 0) { | |
6553e192 MB |
430 | printk(KERN_ERR "asoc: failed to add dapm kcontrol %s: %d\n", |
431 | path->long_name, | |
432 | ret); | |
2b97eabc RP |
433 | kfree(path->long_name); |
434 | path->long_name = NULL; | |
435 | return ret; | |
436 | } | |
437 | } | |
438 | } | |
439 | return ret; | |
440 | } | |
441 | ||
442 | /* create new dapm mux control */ | |
443 | static int dapm_new_mux(struct snd_soc_codec *codec, | |
444 | struct snd_soc_dapm_widget *w) | |
445 | { | |
446 | struct snd_soc_dapm_path *path = NULL; | |
447 | struct snd_kcontrol *kcontrol; | |
448 | int ret = 0; | |
449 | ||
450 | if (!w->num_kcontrols) { | |
451 | printk(KERN_ERR "asoc: mux %s has no controls\n", w->name); | |
452 | return -EINVAL; | |
453 | } | |
454 | ||
455 | kcontrol = snd_soc_cnew(&w->kcontrols[0], w, w->name); | |
456 | ret = snd_ctl_add(codec->card, kcontrol); | |
457 | if (ret < 0) | |
458 | goto err; | |
459 | ||
460 | list_for_each_entry(path, &w->sources, list_sink) | |
461 | path->kcontrol = kcontrol; | |
462 | ||
463 | return ret; | |
464 | ||
465 | err: | |
466 | printk(KERN_ERR "asoc: failed to add kcontrol %s\n", w->name); | |
467 | return ret; | |
468 | } | |
469 | ||
470 | /* create new dapm volume control */ | |
471 | static int dapm_new_pga(struct snd_soc_codec *codec, | |
472 | struct snd_soc_dapm_widget *w) | |
473 | { | |
474 | struct snd_kcontrol *kcontrol; | |
475 | int ret = 0; | |
476 | ||
477 | if (!w->num_kcontrols) | |
478 | return -EINVAL; | |
479 | ||
480 | kcontrol = snd_soc_cnew(&w->kcontrols[0], w, w->name); | |
481 | ret = snd_ctl_add(codec->card, kcontrol); | |
482 | if (ret < 0) { | |
483 | printk(KERN_ERR "asoc: failed to add kcontrol %s\n", w->name); | |
484 | return ret; | |
485 | } | |
486 | ||
487 | return ret; | |
488 | } | |
489 | ||
490 | /* reset 'walked' bit for each dapm path */ | |
491 | static inline void dapm_clear_walk(struct snd_soc_codec *codec) | |
492 | { | |
493 | struct snd_soc_dapm_path *p; | |
494 | ||
495 | list_for_each_entry(p, &codec->dapm_paths, list) | |
496 | p->walked = 0; | |
497 | } | |
498 | ||
499 | /* | |
500 | * Recursively check for a completed path to an active or physically connected | |
501 | * output widget. Returns number of complete paths. | |
502 | */ | |
503 | static int is_connected_output_ep(struct snd_soc_dapm_widget *widget) | |
504 | { | |
505 | struct snd_soc_dapm_path *path; | |
506 | int con = 0; | |
507 | ||
246d0a17 MB |
508 | if (widget->id == snd_soc_dapm_supply) |
509 | return 0; | |
510 | ||
010ff262 MB |
511 | switch (widget->id) { |
512 | case snd_soc_dapm_adc: | |
513 | case snd_soc_dapm_aif_out: | |
514 | if (widget->active) | |
515 | return 1; | |
516 | default: | |
517 | break; | |
518 | } | |
2b97eabc RP |
519 | |
520 | if (widget->connected) { | |
521 | /* connected pin ? */ | |
522 | if (widget->id == snd_soc_dapm_output && !widget->ext) | |
523 | return 1; | |
524 | ||
525 | /* connected jack or spk ? */ | |
526 | if (widget->id == snd_soc_dapm_hp || widget->id == snd_soc_dapm_spk || | |
527 | widget->id == snd_soc_dapm_line) | |
528 | return 1; | |
529 | } | |
530 | ||
531 | list_for_each_entry(path, &widget->sinks, list_source) { | |
532 | if (path->walked) | |
533 | continue; | |
534 | ||
535 | if (path->sink && path->connect) { | |
536 | path->walked = 1; | |
537 | con += is_connected_output_ep(path->sink); | |
538 | } | |
539 | } | |
540 | ||
541 | return con; | |
542 | } | |
543 | ||
544 | /* | |
545 | * Recursively check for a completed path to an active or physically connected | |
546 | * input widget. Returns number of complete paths. | |
547 | */ | |
548 | static int is_connected_input_ep(struct snd_soc_dapm_widget *widget) | |
549 | { | |
550 | struct snd_soc_dapm_path *path; | |
551 | int con = 0; | |
552 | ||
246d0a17 MB |
553 | if (widget->id == snd_soc_dapm_supply) |
554 | return 0; | |
555 | ||
2b97eabc | 556 | /* active stream ? */ |
010ff262 MB |
557 | switch (widget->id) { |
558 | case snd_soc_dapm_dac: | |
559 | case snd_soc_dapm_aif_in: | |
560 | if (widget->active) | |
561 | return 1; | |
562 | default: | |
563 | break; | |
564 | } | |
2b97eabc RP |
565 | |
566 | if (widget->connected) { | |
567 | /* connected pin ? */ | |
568 | if (widget->id == snd_soc_dapm_input && !widget->ext) | |
569 | return 1; | |
570 | ||
571 | /* connected VMID/Bias for lower pops */ | |
572 | if (widget->id == snd_soc_dapm_vmid) | |
573 | return 1; | |
574 | ||
575 | /* connected jack ? */ | |
576 | if (widget->id == snd_soc_dapm_mic || widget->id == snd_soc_dapm_line) | |
577 | return 1; | |
578 | } | |
579 | ||
580 | list_for_each_entry(path, &widget->sources, list_sink) { | |
581 | if (path->walked) | |
582 | continue; | |
583 | ||
584 | if (path->source && path->connect) { | |
585 | path->walked = 1; | |
586 | con += is_connected_input_ep(path->source); | |
587 | } | |
588 | } | |
589 | ||
590 | return con; | |
591 | } | |
592 | ||
e2be2ccf JN |
593 | /* |
594 | * Handler for generic register modifier widget. | |
595 | */ | |
596 | int dapm_reg_event(struct snd_soc_dapm_widget *w, | |
597 | struct snd_kcontrol *kcontrol, int event) | |
598 | { | |
599 | unsigned int val; | |
600 | ||
601 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
602 | val = w->on_val; | |
603 | else | |
604 | val = w->off_val; | |
605 | ||
606 | snd_soc_update_bits(w->codec, -(w->reg + 1), | |
607 | w->mask << w->shift, val << w->shift); | |
608 | ||
609 | return 0; | |
610 | } | |
11589418 | 611 | EXPORT_SYMBOL_GPL(dapm_reg_event); |
e2be2ccf | 612 | |
025756ec MB |
613 | /* Standard power change method, used to apply power changes to most |
614 | * widgets. | |
615 | */ | |
616 | static int dapm_generic_apply_power(struct snd_soc_dapm_widget *w) | |
617 | { | |
618 | int ret; | |
619 | ||
620 | /* call any power change event handlers */ | |
621 | if (w->event) | |
622 | pr_debug("power %s event for %s flags %x\n", | |
623 | w->power ? "on" : "off", | |
624 | w->name, w->event_flags); | |
625 | ||
626 | /* power up pre event */ | |
627 | if (w->power && w->event && | |
628 | (w->event_flags & SND_SOC_DAPM_PRE_PMU)) { | |
629 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMU); | |
630 | if (ret < 0) | |
631 | return ret; | |
632 | } | |
633 | ||
634 | /* power down pre event */ | |
635 | if (!w->power && w->event && | |
636 | (w->event_flags & SND_SOC_DAPM_PRE_PMD)) { | |
637 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMD); | |
638 | if (ret < 0) | |
639 | return ret; | |
640 | } | |
641 | ||
642 | /* Lower PGA volume to reduce pops */ | |
643 | if (w->id == snd_soc_dapm_pga && !w->power) | |
644 | dapm_set_pga(w, w->power); | |
645 | ||
646 | dapm_update_bits(w); | |
647 | ||
648 | /* Raise PGA volume to reduce pops */ | |
649 | if (w->id == snd_soc_dapm_pga && w->power) | |
650 | dapm_set_pga(w, w->power); | |
651 | ||
652 | /* power up post event */ | |
653 | if (w->power && w->event && | |
654 | (w->event_flags & SND_SOC_DAPM_POST_PMU)) { | |
655 | ret = w->event(w, | |
656 | NULL, SND_SOC_DAPM_POST_PMU); | |
657 | if (ret < 0) | |
658 | return ret; | |
659 | } | |
660 | ||
661 | /* power down post event */ | |
662 | if (!w->power && w->event && | |
663 | (w->event_flags & SND_SOC_DAPM_POST_PMD)) { | |
664 | ret = w->event(w, NULL, SND_SOC_DAPM_POST_PMD); | |
665 | if (ret < 0) | |
666 | return ret; | |
667 | } | |
668 | ||
669 | return 0; | |
670 | } | |
671 | ||
cd0f2d47 MB |
672 | /* Generic check to see if a widget should be powered. |
673 | */ | |
674 | static int dapm_generic_check_power(struct snd_soc_dapm_widget *w) | |
675 | { | |
676 | int in, out; | |
677 | ||
678 | in = is_connected_input_ep(w); | |
679 | dapm_clear_walk(w->codec); | |
680 | out = is_connected_output_ep(w); | |
681 | dapm_clear_walk(w->codec); | |
682 | return out != 0 && in != 0; | |
683 | } | |
684 | ||
6ea31b9f MB |
685 | /* Check to see if an ADC has power */ |
686 | static int dapm_adc_check_power(struct snd_soc_dapm_widget *w) | |
687 | { | |
688 | int in; | |
689 | ||
690 | if (w->active) { | |
691 | in = is_connected_input_ep(w); | |
692 | dapm_clear_walk(w->codec); | |
693 | return in != 0; | |
694 | } else { | |
695 | return dapm_generic_check_power(w); | |
696 | } | |
697 | } | |
698 | ||
699 | /* Check to see if a DAC has power */ | |
700 | static int dapm_dac_check_power(struct snd_soc_dapm_widget *w) | |
701 | { | |
702 | int out; | |
703 | ||
704 | if (w->active) { | |
705 | out = is_connected_output_ep(w); | |
706 | dapm_clear_walk(w->codec); | |
707 | return out != 0; | |
708 | } else { | |
709 | return dapm_generic_check_power(w); | |
710 | } | |
711 | } | |
712 | ||
246d0a17 MB |
713 | /* Check to see if a power supply is needed */ |
714 | static int dapm_supply_check_power(struct snd_soc_dapm_widget *w) | |
715 | { | |
716 | struct snd_soc_dapm_path *path; | |
717 | int power = 0; | |
718 | ||
719 | /* Check if one of our outputs is connected */ | |
720 | list_for_each_entry(path, &w->sinks, list_source) { | |
721 | if (path->sink && path->sink->power_check && | |
722 | path->sink->power_check(path->sink)) { | |
723 | power = 1; | |
724 | break; | |
725 | } | |
726 | } | |
727 | ||
728 | dapm_clear_walk(w->codec); | |
729 | ||
730 | return power; | |
731 | } | |
732 | ||
38357ab2 MB |
733 | static int dapm_seq_compare(struct snd_soc_dapm_widget *a, |
734 | struct snd_soc_dapm_widget *b, | |
735 | int sort[]) | |
42aa3418 | 736 | { |
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 | ||
975 | power = w->power_check(w); | |
452c5eaa MB |
976 | if (power) |
977 | sys_power = 1; | |
978 | ||
6d3ddc81 MB |
979 | if (w->power == power) |
980 | continue; | |
981 | ||
982 | if (power) | |
291f3bbc | 983 | dapm_seq_insert(w, &up_list, dapm_up_seq); |
6d3ddc81 | 984 | else |
291f3bbc | 985 | dapm_seq_insert(w, &down_list, dapm_down_seq); |
6d3ddc81 MB |
986 | |
987 | w->power = power; | |
988 | break; | |
989 | } | |
2b97eabc RP |
990 | } |
991 | ||
b14b76a5 MB |
992 | /* If there are no DAPM widgets then try to figure out power from the |
993 | * event type. | |
994 | */ | |
995 | if (list_empty(&codec->dapm_widgets)) { | |
996 | switch (event) { | |
997 | case SND_SOC_DAPM_STREAM_START: | |
998 | case SND_SOC_DAPM_STREAM_RESUME: | |
999 | sys_power = 1; | |
1000 | break; | |
1001 | case SND_SOC_DAPM_STREAM_NOP: | |
1002 | sys_power = codec->bias_level != SND_SOC_BIAS_STANDBY; | |
1003 | default: | |
1004 | break; | |
1005 | } | |
1006 | } | |
1007 | ||
452c5eaa MB |
1008 | /* If we're changing to all on or all off then prepare */ |
1009 | if ((sys_power && codec->bias_level == SND_SOC_BIAS_STANDBY) || | |
1010 | (!sys_power && codec->bias_level == SND_SOC_BIAS_ON)) { | |
1011 | ret = snd_soc_dapm_set_bias_level(socdev, | |
1012 | SND_SOC_BIAS_PREPARE); | |
1013 | if (ret != 0) | |
1014 | pr_err("Failed to prepare bias: %d\n", ret); | |
1015 | } | |
1016 | ||
6d3ddc81 | 1017 | /* Power down widgets first; try to avoid amplifying pops. */ |
291f3bbc | 1018 | dapm_seq_run(codec, &down_list, event, dapm_down_seq); |
2b97eabc | 1019 | |
6d3ddc81 | 1020 | /* Now power up. */ |
291f3bbc | 1021 | dapm_seq_run(codec, &up_list, event, dapm_up_seq); |
2b97eabc | 1022 | |
452c5eaa MB |
1023 | /* If we just powered the last thing off drop to standby bias */ |
1024 | if (codec->bias_level == SND_SOC_BIAS_PREPARE && !sys_power) { | |
1025 | ret = snd_soc_dapm_set_bias_level(socdev, | |
1026 | SND_SOC_BIAS_STANDBY); | |
1027 | if (ret != 0) | |
1028 | pr_err("Failed to apply standby bias: %d\n", ret); | |
1029 | } | |
1030 | ||
1031 | /* If we just powered up then move to active bias */ | |
1032 | if (codec->bias_level == SND_SOC_BIAS_PREPARE && sys_power) { | |
1033 | ret = snd_soc_dapm_set_bias_level(socdev, | |
1034 | SND_SOC_BIAS_ON); | |
1035 | if (ret != 0) | |
1036 | pr_err("Failed to apply active bias: %d\n", ret); | |
1037 | } | |
1038 | ||
cb507e7e MB |
1039 | pop_dbg(codec->pop_time, "DAPM sequencing finished, waiting %dms\n", |
1040 | codec->pop_time); | |
1041 | ||
42aa3418 | 1042 | return 0; |
2b97eabc RP |
1043 | } |
1044 | ||
c1286b86 | 1045 | #ifdef DEBUG |
2b97eabc RP |
1046 | static void dbg_dump_dapm(struct snd_soc_codec* codec, const char *action) |
1047 | { | |
1048 | struct snd_soc_dapm_widget *w; | |
1049 | struct snd_soc_dapm_path *p = NULL; | |
1050 | int in, out; | |
1051 | ||
1052 | printk("DAPM %s %s\n", codec->name, action); | |
1053 | ||
1054 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
1055 | ||
1056 | /* only display widgets that effect routing */ | |
1057 | switch (w->id) { | |
1058 | case snd_soc_dapm_pre: | |
1059 | case snd_soc_dapm_post: | |
1060 | case snd_soc_dapm_vmid: | |
1061 | continue; | |
1062 | case snd_soc_dapm_mux: | |
2e72f8e3 | 1063 | case snd_soc_dapm_value_mux: |
2b97eabc RP |
1064 | case snd_soc_dapm_output: |
1065 | case snd_soc_dapm_input: | |
1066 | case snd_soc_dapm_switch: | |
1067 | case snd_soc_dapm_hp: | |
1068 | case snd_soc_dapm_mic: | |
1069 | case snd_soc_dapm_spk: | |
1070 | case snd_soc_dapm_line: | |
1071 | case snd_soc_dapm_micbias: | |
1072 | case snd_soc_dapm_dac: | |
1073 | case snd_soc_dapm_adc: | |
1074 | case snd_soc_dapm_pga: | |
1075 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1076 | case snd_soc_dapm_mixer_named_ctl: |
246d0a17 | 1077 | case snd_soc_dapm_supply: |
010ff262 MB |
1078 | case snd_soc_dapm_aif_in: |
1079 | case snd_soc_dapm_aif_out: | |
2b97eabc RP |
1080 | if (w->name) { |
1081 | in = is_connected_input_ep(w); | |
1082 | dapm_clear_walk(w->codec); | |
1083 | out = is_connected_output_ep(w); | |
1084 | dapm_clear_walk(w->codec); | |
1085 | printk("%s: %s in %d out %d\n", w->name, | |
1086 | w->power ? "On":"Off",in, out); | |
1087 | ||
1088 | list_for_each_entry(p, &w->sources, list_sink) { | |
1089 | if (p->connect) | |
1090 | printk(" in %s %s\n", p->name ? p->name : "static", | |
1091 | p->source->name); | |
1092 | } | |
1093 | list_for_each_entry(p, &w->sinks, list_source) { | |
2b97eabc RP |
1094 | if (p->connect) |
1095 | printk(" out %s %s\n", p->name ? p->name : "static", | |
1096 | p->sink->name); | |
1097 | } | |
1098 | } | |
1099 | break; | |
1100 | } | |
1101 | } | |
1102 | } | |
1103 | #endif | |
1104 | ||
79fb9387 MB |
1105 | #ifdef CONFIG_DEBUG_FS |
1106 | static int dapm_widget_power_open_file(struct inode *inode, struct file *file) | |
1107 | { | |
1108 | file->private_data = inode->i_private; | |
1109 | return 0; | |
1110 | } | |
1111 | ||
1112 | static ssize_t dapm_widget_power_read_file(struct file *file, | |
1113 | char __user *user_buf, | |
1114 | size_t count, loff_t *ppos) | |
1115 | { | |
1116 | struct snd_soc_dapm_widget *w = file->private_data; | |
1117 | char *buf; | |
1118 | int in, out; | |
1119 | ssize_t ret; | |
1120 | struct snd_soc_dapm_path *p = NULL; | |
1121 | ||
1122 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); | |
1123 | if (!buf) | |
1124 | return -ENOMEM; | |
1125 | ||
1126 | in = is_connected_input_ep(w); | |
1127 | dapm_clear_walk(w->codec); | |
1128 | out = is_connected_output_ep(w); | |
1129 | dapm_clear_walk(w->codec); | |
1130 | ||
1131 | ret = snprintf(buf, PAGE_SIZE, "%s: %s in %d out %d\n", | |
1132 | w->name, w->power ? "On" : "Off", in, out); | |
1133 | ||
1134 | if (w->active && w->sname) | |
1135 | ret += snprintf(buf, PAGE_SIZE - ret, " stream %s active\n", | |
1136 | w->sname); | |
1137 | ||
1138 | list_for_each_entry(p, &w->sources, list_sink) { | |
1139 | if (p->connect) | |
1140 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
1141 | " in %s %s\n", | |
1142 | p->name ? p->name : "static", | |
1143 | p->source->name); | |
1144 | } | |
1145 | list_for_each_entry(p, &w->sinks, list_source) { | |
1146 | if (p->connect) | |
1147 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
1148 | " out %s %s\n", | |
1149 | p->name ? p->name : "static", | |
1150 | p->sink->name); | |
1151 | } | |
1152 | ||
1153 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); | |
1154 | ||
1155 | kfree(buf); | |
1156 | return ret; | |
1157 | } | |
1158 | ||
1159 | static const struct file_operations dapm_widget_power_fops = { | |
1160 | .open = dapm_widget_power_open_file, | |
1161 | .read = dapm_widget_power_read_file, | |
1162 | }; | |
1163 | ||
1164 | void snd_soc_dapm_debugfs_init(struct snd_soc_codec *codec) | |
1165 | { | |
1166 | struct snd_soc_dapm_widget *w; | |
1167 | struct dentry *d; | |
1168 | ||
1169 | if (!codec->debugfs_dapm) | |
1170 | return; | |
1171 | ||
1172 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
1173 | if (!w->name) | |
1174 | continue; | |
1175 | ||
1176 | d = debugfs_create_file(w->name, 0444, | |
1177 | codec->debugfs_dapm, w, | |
1178 | &dapm_widget_power_fops); | |
1179 | if (!d) | |
1180 | printk(KERN_WARNING | |
1181 | "ASoC: Failed to create %s debugfs file\n", | |
1182 | w->name); | |
1183 | } | |
1184 | } | |
1185 | #else | |
1186 | void snd_soc_dapm_debugfs_init(struct snd_soc_codec *codec) | |
1187 | { | |
1188 | } | |
1189 | #endif | |
1190 | ||
2b97eabc | 1191 | /* test and update the power status of a mux widget */ |
d9c96cf3 AB |
1192 | static int dapm_mux_update_power(struct snd_soc_dapm_widget *widget, |
1193 | struct snd_kcontrol *kcontrol, int mask, | |
cb01e2b9 | 1194 | int mux, int val, struct soc_enum *e) |
2b97eabc RP |
1195 | { |
1196 | struct snd_soc_dapm_path *path; | |
1197 | int found = 0; | |
1198 | ||
eff317d0 PU |
1199 | if (widget->id != snd_soc_dapm_mux && |
1200 | widget->id != snd_soc_dapm_value_mux) | |
2b97eabc RP |
1201 | return -ENODEV; |
1202 | ||
1203 | if (!snd_soc_test_bits(widget->codec, e->reg, mask, val)) | |
1204 | return 0; | |
1205 | ||
1206 | /* find dapm widget path assoc with kcontrol */ | |
1207 | list_for_each_entry(path, &widget->codec->dapm_paths, list) { | |
1208 | if (path->kcontrol != kcontrol) | |
1209 | continue; | |
1210 | ||
cb01e2b9 | 1211 | if (!path->name || !e->texts[mux]) |
2b97eabc RP |
1212 | continue; |
1213 | ||
1214 | found = 1; | |
1215 | /* we now need to match the string in the enum to the path */ | |
cb01e2b9 | 1216 | if (!(strcmp(path->name, e->texts[mux]))) |
2b97eabc RP |
1217 | path->connect = 1; /* new connection */ |
1218 | else | |
1219 | path->connect = 0; /* old connection must be powered down */ | |
1220 | } | |
1221 | ||
3fccd8b1 | 1222 | if (found) { |
2b97eabc | 1223 | dapm_power_widgets(widget->codec, SND_SOC_DAPM_STREAM_NOP); |
3fccd8b1 MB |
1224 | dump_dapm(widget->codec, "mux power update"); |
1225 | } | |
2b97eabc RP |
1226 | |
1227 | return 0; | |
1228 | } | |
2b97eabc | 1229 | |
1b075e3f | 1230 | /* test and update the power status of a mixer or switch widget */ |
d9c96cf3 AB |
1231 | static int dapm_mixer_update_power(struct snd_soc_dapm_widget *widget, |
1232 | struct snd_kcontrol *kcontrol, int reg, | |
1233 | int val_mask, int val, int invert) | |
2b97eabc RP |
1234 | { |
1235 | struct snd_soc_dapm_path *path; | |
1236 | int found = 0; | |
1237 | ||
1b075e3f | 1238 | if (widget->id != snd_soc_dapm_mixer && |
ca9c1aae | 1239 | widget->id != snd_soc_dapm_mixer_named_ctl && |
1b075e3f | 1240 | widget->id != snd_soc_dapm_switch) |
2b97eabc RP |
1241 | return -ENODEV; |
1242 | ||
1243 | if (!snd_soc_test_bits(widget->codec, reg, val_mask, val)) | |
1244 | return 0; | |
1245 | ||
1246 | /* find dapm widget path assoc with kcontrol */ | |
1247 | list_for_each_entry(path, &widget->codec->dapm_paths, list) { | |
1248 | if (path->kcontrol != kcontrol) | |
1249 | continue; | |
1250 | ||
1251 | /* found, now check type */ | |
1252 | found = 1; | |
1253 | if (val) | |
1254 | /* new connection */ | |
1255 | path->connect = invert ? 0:1; | |
1256 | else | |
1257 | /* old connection must be powered down */ | |
1258 | path->connect = invert ? 1:0; | |
1259 | break; | |
1260 | } | |
1261 | ||
3fccd8b1 | 1262 | if (found) { |
2b97eabc | 1263 | dapm_power_widgets(widget->codec, SND_SOC_DAPM_STREAM_NOP); |
3fccd8b1 MB |
1264 | dump_dapm(widget->codec, "mixer power update"); |
1265 | } | |
2b97eabc RP |
1266 | |
1267 | return 0; | |
1268 | } | |
2b97eabc RP |
1269 | |
1270 | /* show dapm widget status in sys fs */ | |
1271 | static ssize_t dapm_widget_show(struct device *dev, | |
1272 | struct device_attribute *attr, char *buf) | |
1273 | { | |
1274 | struct snd_soc_device *devdata = dev_get_drvdata(dev); | |
6627a653 | 1275 | struct snd_soc_codec *codec = devdata->card->codec; |
2b97eabc RP |
1276 | struct snd_soc_dapm_widget *w; |
1277 | int count = 0; | |
1278 | char *state = "not set"; | |
1279 | ||
1280 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
1281 | ||
1282 | /* only display widgets that burnm power */ | |
1283 | switch (w->id) { | |
1284 | case snd_soc_dapm_hp: | |
1285 | case snd_soc_dapm_mic: | |
1286 | case snd_soc_dapm_spk: | |
1287 | case snd_soc_dapm_line: | |
1288 | case snd_soc_dapm_micbias: | |
1289 | case snd_soc_dapm_dac: | |
1290 | case snd_soc_dapm_adc: | |
1291 | case snd_soc_dapm_pga: | |
1292 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1293 | case snd_soc_dapm_mixer_named_ctl: |
246d0a17 | 1294 | case snd_soc_dapm_supply: |
2b97eabc RP |
1295 | if (w->name) |
1296 | count += sprintf(buf + count, "%s: %s\n", | |
1297 | w->name, w->power ? "On":"Off"); | |
1298 | break; | |
1299 | default: | |
1300 | break; | |
1301 | } | |
1302 | } | |
1303 | ||
0be9898a MB |
1304 | switch (codec->bias_level) { |
1305 | case SND_SOC_BIAS_ON: | |
1306 | state = "On"; | |
2b97eabc | 1307 | break; |
0be9898a MB |
1308 | case SND_SOC_BIAS_PREPARE: |
1309 | state = "Prepare"; | |
2b97eabc | 1310 | break; |
0be9898a MB |
1311 | case SND_SOC_BIAS_STANDBY: |
1312 | state = "Standby"; | |
2b97eabc | 1313 | break; |
0be9898a MB |
1314 | case SND_SOC_BIAS_OFF: |
1315 | state = "Off"; | |
2b97eabc RP |
1316 | break; |
1317 | } | |
1318 | count += sprintf(buf + count, "PM State: %s\n", state); | |
1319 | ||
1320 | return count; | |
1321 | } | |
1322 | ||
1323 | static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL); | |
1324 | ||
1325 | int snd_soc_dapm_sys_add(struct device *dev) | |
1326 | { | |
12ef193d | 1327 | return device_create_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1328 | } |
1329 | ||
1330 | static void snd_soc_dapm_sys_remove(struct device *dev) | |
1331 | { | |
aef90843 | 1332 | device_remove_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1333 | } |
1334 | ||
1335 | /* free all dapm widgets and resources */ | |
d9c96cf3 | 1336 | static void dapm_free_widgets(struct snd_soc_codec *codec) |
2b97eabc RP |
1337 | { |
1338 | struct snd_soc_dapm_widget *w, *next_w; | |
1339 | struct snd_soc_dapm_path *p, *next_p; | |
1340 | ||
1341 | list_for_each_entry_safe(w, next_w, &codec->dapm_widgets, list) { | |
1342 | list_del(&w->list); | |
1343 | kfree(w); | |
1344 | } | |
1345 | ||
1346 | list_for_each_entry_safe(p, next_p, &codec->dapm_paths, list) { | |
1347 | list_del(&p->list); | |
1348 | kfree(p->long_name); | |
1349 | kfree(p); | |
1350 | } | |
1351 | } | |
1352 | ||
a5302181 | 1353 | static int snd_soc_dapm_set_pin(struct snd_soc_codec *codec, |
1649923d | 1354 | const char *pin, int status) |
a5302181 LG |
1355 | { |
1356 | struct snd_soc_dapm_widget *w; | |
1357 | ||
1358 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
1359 | if (!strcmp(w->name, pin)) { | |
c1286b86 | 1360 | pr_debug("dapm: %s: pin %s\n", codec->name, pin); |
a5302181 LG |
1361 | w->connected = status; |
1362 | return 0; | |
1363 | } | |
1364 | } | |
1365 | ||
c1286b86 | 1366 | pr_err("dapm: %s: configuring unknown pin %s\n", codec->name, pin); |
a5302181 LG |
1367 | return -EINVAL; |
1368 | } | |
1369 | ||
2b97eabc | 1370 | /** |
a5302181 | 1371 | * snd_soc_dapm_sync - scan and power dapm paths |
2b97eabc RP |
1372 | * @codec: audio codec |
1373 | * | |
1374 | * Walks all dapm audio paths and powers widgets according to their | |
1375 | * stream or path usage. | |
1376 | * | |
1377 | * Returns 0 for success. | |
1378 | */ | |
a5302181 | 1379 | int snd_soc_dapm_sync(struct snd_soc_codec *codec) |
2b97eabc | 1380 | { |
3fccd8b1 MB |
1381 | int ret = dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP); |
1382 | dump_dapm(codec, "sync"); | |
1383 | return ret; | |
2b97eabc | 1384 | } |
a5302181 | 1385 | EXPORT_SYMBOL_GPL(snd_soc_dapm_sync); |
2b97eabc | 1386 | |
105f1c28 MB |
1387 | static int snd_soc_dapm_add_route(struct snd_soc_codec *codec, |
1388 | const char *sink, const char *control, const char *source) | |
2b97eabc RP |
1389 | { |
1390 | struct snd_soc_dapm_path *path; | |
1391 | struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w; | |
1392 | int ret = 0; | |
1393 | ||
1394 | /* find src and dest widgets */ | |
1395 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
1396 | ||
1397 | if (!wsink && !(strcmp(w->name, sink))) { | |
1398 | wsink = w; | |
1399 | continue; | |
1400 | } | |
1401 | if (!wsource && !(strcmp(w->name, source))) { | |
1402 | wsource = w; | |
1403 | } | |
1404 | } | |
1405 | ||
1406 | if (wsource == NULL || wsink == NULL) | |
1407 | return -ENODEV; | |
1408 | ||
1409 | path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL); | |
1410 | if (!path) | |
1411 | return -ENOMEM; | |
1412 | ||
1413 | path->source = wsource; | |
1414 | path->sink = wsink; | |
1415 | INIT_LIST_HEAD(&path->list); | |
1416 | INIT_LIST_HEAD(&path->list_source); | |
1417 | INIT_LIST_HEAD(&path->list_sink); | |
1418 | ||
1419 | /* check for external widgets */ | |
1420 | if (wsink->id == snd_soc_dapm_input) { | |
1421 | if (wsource->id == snd_soc_dapm_micbias || | |
1422 | wsource->id == snd_soc_dapm_mic || | |
087d53ab RC |
1423 | wsource->id == snd_soc_dapm_line || |
1424 | wsource->id == snd_soc_dapm_output) | |
2b97eabc RP |
1425 | wsink->ext = 1; |
1426 | } | |
1427 | if (wsource->id == snd_soc_dapm_output) { | |
1428 | if (wsink->id == snd_soc_dapm_spk || | |
1429 | wsink->id == snd_soc_dapm_hp || | |
1e39221e SF |
1430 | wsink->id == snd_soc_dapm_line || |
1431 | wsink->id == snd_soc_dapm_input) | |
2b97eabc RP |
1432 | wsource->ext = 1; |
1433 | } | |
1434 | ||
1435 | /* connect static paths */ | |
1436 | if (control == NULL) { | |
1437 | list_add(&path->list, &codec->dapm_paths); | |
1438 | list_add(&path->list_sink, &wsink->sources); | |
1439 | list_add(&path->list_source, &wsource->sinks); | |
1440 | path->connect = 1; | |
1441 | return 0; | |
1442 | } | |
1443 | ||
1444 | /* connect dynamic paths */ | |
1445 | switch(wsink->id) { | |
1446 | case snd_soc_dapm_adc: | |
1447 | case snd_soc_dapm_dac: | |
1448 | case snd_soc_dapm_pga: | |
1449 | case snd_soc_dapm_input: | |
1450 | case snd_soc_dapm_output: | |
1451 | case snd_soc_dapm_micbias: | |
1452 | case snd_soc_dapm_vmid: | |
1453 | case snd_soc_dapm_pre: | |
1454 | case snd_soc_dapm_post: | |
246d0a17 | 1455 | case snd_soc_dapm_supply: |
010ff262 MB |
1456 | case snd_soc_dapm_aif_in: |
1457 | case snd_soc_dapm_aif_out: | |
2b97eabc RP |
1458 | list_add(&path->list, &codec->dapm_paths); |
1459 | list_add(&path->list_sink, &wsink->sources); | |
1460 | list_add(&path->list_source, &wsource->sinks); | |
1461 | path->connect = 1; | |
1462 | return 0; | |
1463 | case snd_soc_dapm_mux: | |
74155556 | 1464 | case snd_soc_dapm_value_mux: |
2b97eabc RP |
1465 | ret = dapm_connect_mux(codec, wsource, wsink, path, control, |
1466 | &wsink->kcontrols[0]); | |
1467 | if (ret != 0) | |
1468 | goto err; | |
1469 | break; | |
1470 | case snd_soc_dapm_switch: | |
1471 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1472 | case snd_soc_dapm_mixer_named_ctl: |
2b97eabc RP |
1473 | ret = dapm_connect_mixer(codec, wsource, wsink, path, control); |
1474 | if (ret != 0) | |
1475 | goto err; | |
1476 | break; | |
1477 | case snd_soc_dapm_hp: | |
1478 | case snd_soc_dapm_mic: | |
1479 | case snd_soc_dapm_line: | |
1480 | case snd_soc_dapm_spk: | |
1481 | list_add(&path->list, &codec->dapm_paths); | |
1482 | list_add(&path->list_sink, &wsink->sources); | |
1483 | list_add(&path->list_source, &wsource->sinks); | |
1484 | path->connect = 0; | |
1485 | return 0; | |
1486 | } | |
1487 | return 0; | |
1488 | ||
1489 | err: | |
1490 | printk(KERN_WARNING "asoc: no dapm match for %s --> %s --> %s\n", source, | |
1491 | control, sink); | |
1492 | kfree(path); | |
1493 | return ret; | |
1494 | } | |
105f1c28 | 1495 | |
105f1c28 MB |
1496 | /** |
1497 | * snd_soc_dapm_add_routes - Add routes between DAPM widgets | |
1498 | * @codec: codec | |
1499 | * @route: audio routes | |
1500 | * @num: number of routes | |
1501 | * | |
1502 | * Connects 2 dapm widgets together via a named audio path. The sink is | |
1503 | * the widget receiving the audio signal, whilst the source is the sender | |
1504 | * of the audio signal. | |
1505 | * | |
1506 | * Returns 0 for success else error. On error all resources can be freed | |
1507 | * with a call to snd_soc_card_free(). | |
1508 | */ | |
1509 | int snd_soc_dapm_add_routes(struct snd_soc_codec *codec, | |
1510 | const struct snd_soc_dapm_route *route, int num) | |
1511 | { | |
1512 | int i, ret; | |
1513 | ||
1514 | for (i = 0; i < num; i++) { | |
1515 | ret = snd_soc_dapm_add_route(codec, route->sink, | |
1516 | route->control, route->source); | |
1517 | if (ret < 0) { | |
1518 | printk(KERN_ERR "Failed to add route %s->%s\n", | |
1519 | route->source, | |
1520 | route->sink); | |
1521 | return ret; | |
1522 | } | |
1523 | route++; | |
1524 | } | |
1525 | ||
1526 | return 0; | |
1527 | } | |
1528 | EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes); | |
1529 | ||
2b97eabc RP |
1530 | /** |
1531 | * snd_soc_dapm_new_widgets - add new dapm widgets | |
1532 | * @codec: audio codec | |
1533 | * | |
1534 | * Checks the codec for any new dapm widgets and creates them if found. | |
1535 | * | |
1536 | * Returns 0 for success. | |
1537 | */ | |
1538 | int snd_soc_dapm_new_widgets(struct snd_soc_codec *codec) | |
1539 | { | |
1540 | struct snd_soc_dapm_widget *w; | |
1541 | ||
2b97eabc RP |
1542 | list_for_each_entry(w, &codec->dapm_widgets, list) |
1543 | { | |
1544 | if (w->new) | |
1545 | continue; | |
1546 | ||
1547 | switch(w->id) { | |
1548 | case snd_soc_dapm_switch: | |
1549 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1550 | case snd_soc_dapm_mixer_named_ctl: |
b75576d7 | 1551 | w->power_check = dapm_generic_check_power; |
2b97eabc RP |
1552 | dapm_new_mixer(codec, w); |
1553 | break; | |
1554 | case snd_soc_dapm_mux: | |
2e72f8e3 | 1555 | case snd_soc_dapm_value_mux: |
b75576d7 | 1556 | w->power_check = dapm_generic_check_power; |
2b97eabc RP |
1557 | dapm_new_mux(codec, w); |
1558 | break; | |
1559 | case snd_soc_dapm_adc: | |
010ff262 | 1560 | case snd_soc_dapm_aif_out: |
b75576d7 MB |
1561 | w->power_check = dapm_adc_check_power; |
1562 | break; | |
2b97eabc | 1563 | case snd_soc_dapm_dac: |
010ff262 | 1564 | case snd_soc_dapm_aif_in: |
b75576d7 MB |
1565 | w->power_check = dapm_dac_check_power; |
1566 | break; | |
2b97eabc | 1567 | case snd_soc_dapm_pga: |
b75576d7 | 1568 | w->power_check = dapm_generic_check_power; |
2b97eabc RP |
1569 | dapm_new_pga(codec, w); |
1570 | break; | |
1571 | case snd_soc_dapm_input: | |
1572 | case snd_soc_dapm_output: | |
1573 | case snd_soc_dapm_micbias: | |
1574 | case snd_soc_dapm_spk: | |
1575 | case snd_soc_dapm_hp: | |
1576 | case snd_soc_dapm_mic: | |
1577 | case snd_soc_dapm_line: | |
b75576d7 MB |
1578 | w->power_check = dapm_generic_check_power; |
1579 | break; | |
246d0a17 MB |
1580 | case snd_soc_dapm_supply: |
1581 | w->power_check = dapm_supply_check_power; | |
2b97eabc RP |
1582 | case snd_soc_dapm_vmid: |
1583 | case snd_soc_dapm_pre: | |
1584 | case snd_soc_dapm_post: | |
1585 | break; | |
1586 | } | |
1587 | w->new = 1; | |
1588 | } | |
1589 | ||
1590 | dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP); | |
2b97eabc RP |
1591 | return 0; |
1592 | } | |
1593 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets); | |
1594 | ||
1595 | /** | |
1596 | * snd_soc_dapm_get_volsw - dapm mixer get callback | |
1597 | * @kcontrol: mixer control | |
ac11a2b3 | 1598 | * @ucontrol: control element information |
2b97eabc RP |
1599 | * |
1600 | * Callback to get the value of a dapm mixer control. | |
1601 | * | |
1602 | * Returns 0 for success. | |
1603 | */ | |
1604 | int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol, | |
1605 | struct snd_ctl_elem_value *ucontrol) | |
1606 | { | |
1607 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
4eaa9819 JS |
1608 | struct soc_mixer_control *mc = |
1609 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
1610 | unsigned int reg = mc->reg; |
1611 | unsigned int shift = mc->shift; | |
1612 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1613 | int max = mc->max; |
815ecf8d JS |
1614 | unsigned int invert = mc->invert; |
1615 | unsigned int mask = (1 << fls(max)) - 1; | |
2b97eabc RP |
1616 | |
1617 | /* return the saved value if we are powered down */ | |
1618 | if (widget->id == snd_soc_dapm_pga && !widget->power) { | |
1619 | ucontrol->value.integer.value[0] = widget->saved_value; | |
1620 | return 0; | |
1621 | } | |
1622 | ||
1623 | ucontrol->value.integer.value[0] = | |
1624 | (snd_soc_read(widget->codec, reg) >> shift) & mask; | |
1625 | if (shift != rshift) | |
1626 | ucontrol->value.integer.value[1] = | |
1627 | (snd_soc_read(widget->codec, reg) >> rshift) & mask; | |
1628 | if (invert) { | |
1629 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1630 | max - ucontrol->value.integer.value[0]; |
2b97eabc RP |
1631 | if (shift != rshift) |
1632 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 1633 | max - ucontrol->value.integer.value[1]; |
2b97eabc RP |
1634 | } |
1635 | ||
1636 | return 0; | |
1637 | } | |
1638 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw); | |
1639 | ||
1640 | /** | |
1641 | * snd_soc_dapm_put_volsw - dapm mixer set callback | |
1642 | * @kcontrol: mixer control | |
ac11a2b3 | 1643 | * @ucontrol: control element information |
2b97eabc RP |
1644 | * |
1645 | * Callback to set the value of a dapm mixer control. | |
1646 | * | |
1647 | * Returns 0 for success. | |
1648 | */ | |
1649 | int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, | |
1650 | struct snd_ctl_elem_value *ucontrol) | |
1651 | { | |
1652 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
4eaa9819 JS |
1653 | struct soc_mixer_control *mc = |
1654 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
1655 | unsigned int reg = mc->reg; |
1656 | unsigned int shift = mc->shift; | |
1657 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1658 | int max = mc->max; |
815ecf8d JS |
1659 | unsigned int mask = (1 << fls(max)) - 1; |
1660 | unsigned int invert = mc->invert; | |
46f5822f | 1661 | unsigned int val, val2, val_mask; |
2b97eabc RP |
1662 | int ret; |
1663 | ||
1664 | val = (ucontrol->value.integer.value[0] & mask); | |
1665 | ||
1666 | if (invert) | |
a7a4ac86 | 1667 | val = max - val; |
2b97eabc RP |
1668 | val_mask = mask << shift; |
1669 | val = val << shift; | |
1670 | if (shift != rshift) { | |
1671 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1672 | if (invert) | |
a7a4ac86 | 1673 | val2 = max - val2; |
2b97eabc RP |
1674 | val_mask |= mask << rshift; |
1675 | val |= val2 << rshift; | |
1676 | } | |
1677 | ||
1678 | mutex_lock(&widget->codec->mutex); | |
1679 | widget->value = val; | |
1680 | ||
1681 | /* save volume value if the widget is powered down */ | |
1682 | if (widget->id == snd_soc_dapm_pga && !widget->power) { | |
1683 | widget->saved_value = val; | |
1684 | mutex_unlock(&widget->codec->mutex); | |
1685 | return 1; | |
1686 | } | |
1687 | ||
1688 | dapm_mixer_update_power(widget, kcontrol, reg, val_mask, val, invert); | |
1689 | if (widget->event) { | |
1690 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
9af6d956 LG |
1691 | ret = widget->event(widget, kcontrol, |
1692 | SND_SOC_DAPM_PRE_REG); | |
1693 | if (ret < 0) { | |
1694 | ret = 1; | |
2b97eabc | 1695 | goto out; |
9af6d956 | 1696 | } |
2b97eabc RP |
1697 | } |
1698 | ret = snd_soc_update_bits(widget->codec, reg, val_mask, val); | |
1699 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
9af6d956 LG |
1700 | ret = widget->event(widget, kcontrol, |
1701 | SND_SOC_DAPM_POST_REG); | |
2b97eabc RP |
1702 | } else |
1703 | ret = snd_soc_update_bits(widget->codec, reg, val_mask, val); | |
1704 | ||
1705 | out: | |
1706 | mutex_unlock(&widget->codec->mutex); | |
1707 | return ret; | |
1708 | } | |
1709 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw); | |
1710 | ||
1711 | /** | |
1712 | * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback | |
1713 | * @kcontrol: mixer control | |
ac11a2b3 | 1714 | * @ucontrol: control element information |
2b97eabc RP |
1715 | * |
1716 | * Callback to get the value of a dapm enumerated double mixer control. | |
1717 | * | |
1718 | * Returns 0 for success. | |
1719 | */ | |
1720 | int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol, | |
1721 | struct snd_ctl_elem_value *ucontrol) | |
1722 | { | |
1723 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1724 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
46f5822f | 1725 | unsigned int val, bitmask; |
2b97eabc | 1726 | |
f8ba0b7b | 1727 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
1728 | ; |
1729 | val = snd_soc_read(widget->codec, e->reg); | |
1730 | ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1); | |
1731 | if (e->shift_l != e->shift_r) | |
1732 | ucontrol->value.enumerated.item[1] = | |
1733 | (val >> e->shift_r) & (bitmask - 1); | |
1734 | ||
1735 | return 0; | |
1736 | } | |
1737 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double); | |
1738 | ||
1739 | /** | |
1740 | * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback | |
1741 | * @kcontrol: mixer control | |
ac11a2b3 | 1742 | * @ucontrol: control element information |
2b97eabc RP |
1743 | * |
1744 | * Callback to set the value of a dapm enumerated double mixer control. | |
1745 | * | |
1746 | * Returns 0 for success. | |
1747 | */ | |
1748 | int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, | |
1749 | struct snd_ctl_elem_value *ucontrol) | |
1750 | { | |
1751 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1752 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
46f5822f DR |
1753 | unsigned int val, mux; |
1754 | unsigned int mask, bitmask; | |
2b97eabc RP |
1755 | int ret = 0; |
1756 | ||
f8ba0b7b | 1757 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc | 1758 | ; |
f8ba0b7b | 1759 | if (ucontrol->value.enumerated.item[0] > e->max - 1) |
2b97eabc RP |
1760 | return -EINVAL; |
1761 | mux = ucontrol->value.enumerated.item[0]; | |
1762 | val = mux << e->shift_l; | |
1763 | mask = (bitmask - 1) << e->shift_l; | |
1764 | if (e->shift_l != e->shift_r) { | |
f8ba0b7b | 1765 | if (ucontrol->value.enumerated.item[1] > e->max - 1) |
2b97eabc RP |
1766 | return -EINVAL; |
1767 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
1768 | mask |= (bitmask - 1) << e->shift_r; | |
1769 | } | |
1770 | ||
1771 | mutex_lock(&widget->codec->mutex); | |
1772 | widget->value = val; | |
cb01e2b9 | 1773 | dapm_mux_update_power(widget, kcontrol, mask, mux, val, e); |
2b97eabc RP |
1774 | if (widget->event) { |
1775 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
9af6d956 LG |
1776 | ret = widget->event(widget, |
1777 | kcontrol, SND_SOC_DAPM_PRE_REG); | |
2b97eabc RP |
1778 | if (ret < 0) |
1779 | goto out; | |
1780 | } | |
1781 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1782 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
9af6d956 LG |
1783 | ret = widget->event(widget, |
1784 | kcontrol, SND_SOC_DAPM_POST_REG); | |
2b97eabc RP |
1785 | } else |
1786 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1787 | ||
1788 | out: | |
1789 | mutex_unlock(&widget->codec->mutex); | |
1790 | return ret; | |
1791 | } | |
1792 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double); | |
1793 | ||
2e72f8e3 PU |
1794 | /** |
1795 | * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get | |
1796 | * callback | |
1797 | * @kcontrol: mixer control | |
1798 | * @ucontrol: control element information | |
1799 | * | |
1800 | * Callback to get the value of a dapm semi enumerated double mixer control. | |
1801 | * | |
1802 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
1803 | * used for handling bitfield coded enumeration for example. | |
1804 | * | |
1805 | * Returns 0 for success. | |
1806 | */ | |
1807 | int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol *kcontrol, | |
1808 | struct snd_ctl_elem_value *ucontrol) | |
1809 | { | |
1810 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
74155556 | 1811 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f | 1812 | unsigned int reg_val, val, mux; |
2e72f8e3 PU |
1813 | |
1814 | reg_val = snd_soc_read(widget->codec, e->reg); | |
1815 | val = (reg_val >> e->shift_l) & e->mask; | |
1816 | for (mux = 0; mux < e->max; mux++) { | |
1817 | if (val == e->values[mux]) | |
1818 | break; | |
1819 | } | |
1820 | ucontrol->value.enumerated.item[0] = mux; | |
1821 | if (e->shift_l != e->shift_r) { | |
1822 | val = (reg_val >> e->shift_r) & e->mask; | |
1823 | for (mux = 0; mux < e->max; mux++) { | |
1824 | if (val == e->values[mux]) | |
1825 | break; | |
1826 | } | |
1827 | ucontrol->value.enumerated.item[1] = mux; | |
1828 | } | |
1829 | ||
1830 | return 0; | |
1831 | } | |
1832 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double); | |
1833 | ||
1834 | /** | |
1835 | * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set | |
1836 | * callback | |
1837 | * @kcontrol: mixer control | |
1838 | * @ucontrol: control element information | |
1839 | * | |
1840 | * Callback to set the value of a dapm semi enumerated double mixer control. | |
1841 | * | |
1842 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
1843 | * used for handling bitfield coded enumeration for example. | |
1844 | * | |
1845 | * Returns 0 for success. | |
1846 | */ | |
1847 | int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol, | |
1848 | struct snd_ctl_elem_value *ucontrol) | |
1849 | { | |
1850 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
74155556 | 1851 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f DR |
1852 | unsigned int val, mux; |
1853 | unsigned int mask; | |
2e72f8e3 PU |
1854 | int ret = 0; |
1855 | ||
1856 | if (ucontrol->value.enumerated.item[0] > e->max - 1) | |
1857 | return -EINVAL; | |
1858 | mux = ucontrol->value.enumerated.item[0]; | |
1859 | val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l; | |
1860 | mask = e->mask << e->shift_l; | |
1861 | if (e->shift_l != e->shift_r) { | |
1862 | if (ucontrol->value.enumerated.item[1] > e->max - 1) | |
1863 | return -EINVAL; | |
1864 | val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r; | |
1865 | mask |= e->mask << e->shift_r; | |
1866 | } | |
1867 | ||
1868 | mutex_lock(&widget->codec->mutex); | |
1869 | widget->value = val; | |
74155556 | 1870 | dapm_mux_update_power(widget, kcontrol, mask, mux, val, e); |
2e72f8e3 PU |
1871 | if (widget->event) { |
1872 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
1873 | ret = widget->event(widget, | |
1874 | kcontrol, SND_SOC_DAPM_PRE_REG); | |
1875 | if (ret < 0) | |
1876 | goto out; | |
1877 | } | |
1878 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1879 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
1880 | ret = widget->event(widget, | |
1881 | kcontrol, SND_SOC_DAPM_POST_REG); | |
1882 | } else | |
1883 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1884 | ||
1885 | out: | |
1886 | mutex_unlock(&widget->codec->mutex); | |
1887 | return ret; | |
1888 | } | |
1889 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double); | |
1890 | ||
8b37dbd2 MB |
1891 | /** |
1892 | * snd_soc_dapm_info_pin_switch - Info for a pin switch | |
1893 | * | |
1894 | * @kcontrol: mixer control | |
1895 | * @uinfo: control element information | |
1896 | * | |
1897 | * Callback to provide information about a pin switch control. | |
1898 | */ | |
1899 | int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol, | |
1900 | struct snd_ctl_elem_info *uinfo) | |
1901 | { | |
1902 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1903 | uinfo->count = 1; | |
1904 | uinfo->value.integer.min = 0; | |
1905 | uinfo->value.integer.max = 1; | |
1906 | ||
1907 | return 0; | |
1908 | } | |
1909 | EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch); | |
1910 | ||
1911 | /** | |
1912 | * snd_soc_dapm_get_pin_switch - Get information for a pin switch | |
1913 | * | |
1914 | * @kcontrol: mixer control | |
1915 | * @ucontrol: Value | |
1916 | */ | |
1917 | int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol, | |
1918 | struct snd_ctl_elem_value *ucontrol) | |
1919 | { | |
1920 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1921 | const char *pin = (const char *)kcontrol->private_value; | |
1922 | ||
1923 | mutex_lock(&codec->mutex); | |
1924 | ||
1925 | ucontrol->value.integer.value[0] = | |
1926 | snd_soc_dapm_get_pin_status(codec, pin); | |
1927 | ||
1928 | mutex_unlock(&codec->mutex); | |
1929 | ||
1930 | return 0; | |
1931 | } | |
1932 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch); | |
1933 | ||
1934 | /** | |
1935 | * snd_soc_dapm_put_pin_switch - Set information for a pin switch | |
1936 | * | |
1937 | * @kcontrol: mixer control | |
1938 | * @ucontrol: Value | |
1939 | */ | |
1940 | int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol, | |
1941 | struct snd_ctl_elem_value *ucontrol) | |
1942 | { | |
1943 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1944 | const char *pin = (const char *)kcontrol->private_value; | |
1945 | ||
1946 | mutex_lock(&codec->mutex); | |
1947 | ||
1948 | if (ucontrol->value.integer.value[0]) | |
1949 | snd_soc_dapm_enable_pin(codec, pin); | |
1950 | else | |
1951 | snd_soc_dapm_disable_pin(codec, pin); | |
1952 | ||
1953 | snd_soc_dapm_sync(codec); | |
1954 | ||
1955 | mutex_unlock(&codec->mutex); | |
1956 | ||
1957 | return 0; | |
1958 | } | |
1959 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch); | |
1960 | ||
2b97eabc RP |
1961 | /** |
1962 | * snd_soc_dapm_new_control - create new dapm control | |
1963 | * @codec: audio codec | |
1964 | * @widget: widget template | |
1965 | * | |
1966 | * Creates a new dapm control based upon the template. | |
1967 | * | |
1968 | * Returns 0 for success else error. | |
1969 | */ | |
1970 | int snd_soc_dapm_new_control(struct snd_soc_codec *codec, | |
1971 | const struct snd_soc_dapm_widget *widget) | |
1972 | { | |
1973 | struct snd_soc_dapm_widget *w; | |
1974 | ||
1975 | if ((w = dapm_cnew_widget(widget)) == NULL) | |
1976 | return -ENOMEM; | |
1977 | ||
1978 | w->codec = codec; | |
1979 | INIT_LIST_HEAD(&w->sources); | |
1980 | INIT_LIST_HEAD(&w->sinks); | |
1981 | INIT_LIST_HEAD(&w->list); | |
1982 | list_add(&w->list, &codec->dapm_widgets); | |
1983 | ||
1984 | /* machine layer set ups unconnected pins and insertions */ | |
1985 | w->connected = 1; | |
1986 | return 0; | |
1987 | } | |
1988 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control); | |
1989 | ||
4ba1327a MB |
1990 | /** |
1991 | * snd_soc_dapm_new_controls - create new dapm controls | |
1992 | * @codec: audio codec | |
1993 | * @widget: widget array | |
1994 | * @num: number of widgets | |
1995 | * | |
1996 | * Creates new DAPM controls based upon the templates. | |
1997 | * | |
1998 | * Returns 0 for success else error. | |
1999 | */ | |
2000 | int snd_soc_dapm_new_controls(struct snd_soc_codec *codec, | |
2001 | const struct snd_soc_dapm_widget *widget, | |
2002 | int num) | |
2003 | { | |
2004 | int i, ret; | |
2005 | ||
2006 | for (i = 0; i < num; i++) { | |
2007 | ret = snd_soc_dapm_new_control(codec, widget); | |
b8b33cb5 MB |
2008 | if (ret < 0) { |
2009 | printk(KERN_ERR | |
2010 | "ASoC: Failed to create DAPM control %s: %d\n", | |
2011 | widget->name, ret); | |
4ba1327a | 2012 | return ret; |
b8b33cb5 | 2013 | } |
4ba1327a MB |
2014 | widget++; |
2015 | } | |
2016 | return 0; | |
2017 | } | |
2018 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls); | |
2019 | ||
2020 | ||
2b97eabc RP |
2021 | /** |
2022 | * snd_soc_dapm_stream_event - send a stream event to the dapm core | |
2023 | * @codec: audio codec | |
2024 | * @stream: stream name | |
2025 | * @event: stream event | |
2026 | * | |
2027 | * Sends a stream event to the dapm core. The core then makes any | |
2028 | * necessary widget power changes. | |
2029 | * | |
2030 | * Returns 0 for success else error. | |
2031 | */ | |
2032 | int snd_soc_dapm_stream_event(struct snd_soc_codec *codec, | |
2033 | char *stream, int event) | |
2034 | { | |
2035 | struct snd_soc_dapm_widget *w; | |
2036 | ||
11da21a7 SF |
2037 | if (stream == NULL) |
2038 | return 0; | |
2039 | ||
2b97eabc RP |
2040 | mutex_lock(&codec->mutex); |
2041 | list_for_each_entry(w, &codec->dapm_widgets, list) | |
2042 | { | |
2043 | if (!w->sname) | |
2044 | continue; | |
c1286b86 MB |
2045 | pr_debug("widget %s\n %s stream %s event %d\n", |
2046 | w->name, w->sname, stream, event); | |
2b97eabc RP |
2047 | if (strstr(w->sname, stream)) { |
2048 | switch(event) { | |
2049 | case SND_SOC_DAPM_STREAM_START: | |
2050 | w->active = 1; | |
2051 | break; | |
2052 | case SND_SOC_DAPM_STREAM_STOP: | |
2053 | w->active = 0; | |
2054 | break; | |
2055 | case SND_SOC_DAPM_STREAM_SUSPEND: | |
2056 | if (w->active) | |
2057 | w->suspend = 1; | |
2058 | w->active = 0; | |
2059 | break; | |
2060 | case SND_SOC_DAPM_STREAM_RESUME: | |
2061 | if (w->suspend) { | |
2062 | w->active = 1; | |
2063 | w->suspend = 0; | |
2064 | } | |
2065 | break; | |
2066 | case SND_SOC_DAPM_STREAM_PAUSE_PUSH: | |
2067 | break; | |
2068 | case SND_SOC_DAPM_STREAM_PAUSE_RELEASE: | |
2069 | break; | |
2070 | } | |
2071 | } | |
2072 | } | |
2073 | mutex_unlock(&codec->mutex); | |
2074 | ||
2075 | dapm_power_widgets(codec, event); | |
9bf8e7dd | 2076 | dump_dapm(codec, __func__); |
2b97eabc RP |
2077 | return 0; |
2078 | } | |
2079 | EXPORT_SYMBOL_GPL(snd_soc_dapm_stream_event); | |
2080 | ||
2081 | /** | |
a5302181 | 2082 | * snd_soc_dapm_enable_pin - enable pin. |
ac11a2b3 | 2083 | * @codec: SoC codec |
a5302181 | 2084 | * @pin: pin name |
2b97eabc | 2085 | * |
74b8f955 | 2086 | * Enables input/output pin and its parents or children widgets iff there is |
a5302181 LG |
2087 | * a valid audio route and active audio stream. |
2088 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2089 | * do any widget power switching. | |
2b97eabc | 2090 | */ |
1649923d | 2091 | int snd_soc_dapm_enable_pin(struct snd_soc_codec *codec, const char *pin) |
2b97eabc | 2092 | { |
a5302181 LG |
2093 | return snd_soc_dapm_set_pin(codec, pin, 1); |
2094 | } | |
2095 | EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin); | |
2b97eabc | 2096 | |
a5302181 LG |
2097 | /** |
2098 | * snd_soc_dapm_disable_pin - disable pin. | |
2099 | * @codec: SoC codec | |
2100 | * @pin: pin name | |
2101 | * | |
74b8f955 | 2102 | * Disables input/output pin and its parents or children widgets. |
a5302181 LG |
2103 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to |
2104 | * do any widget power switching. | |
2105 | */ | |
1649923d | 2106 | int snd_soc_dapm_disable_pin(struct snd_soc_codec *codec, const char *pin) |
a5302181 LG |
2107 | { |
2108 | return snd_soc_dapm_set_pin(codec, pin, 0); | |
2b97eabc | 2109 | } |
a5302181 | 2110 | EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin); |
2b97eabc | 2111 | |
5817b52a MB |
2112 | /** |
2113 | * snd_soc_dapm_nc_pin - permanently disable pin. | |
2114 | * @codec: SoC codec | |
2115 | * @pin: pin name | |
2116 | * | |
2117 | * Marks the specified pin as being not connected, disabling it along | |
2118 | * any parent or child widgets. At present this is identical to | |
2119 | * snd_soc_dapm_disable_pin() but in future it will be extended to do | |
2120 | * additional things such as disabling controls which only affect | |
2121 | * paths through the pin. | |
2122 | * | |
2123 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2124 | * do any widget power switching. | |
2125 | */ | |
1649923d | 2126 | int snd_soc_dapm_nc_pin(struct snd_soc_codec *codec, const char *pin) |
5817b52a MB |
2127 | { |
2128 | return snd_soc_dapm_set_pin(codec, pin, 0); | |
2129 | } | |
2130 | EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin); | |
2131 | ||
eeec12bf | 2132 | /** |
a5302181 | 2133 | * snd_soc_dapm_get_pin_status - get audio pin status |
eeec12bf | 2134 | * @codec: audio codec |
a5302181 | 2135 | * @pin: audio signal pin endpoint (or start point) |
eeec12bf | 2136 | * |
a5302181 | 2137 | * Get audio pin status - connected or disconnected. |
eeec12bf | 2138 | * |
a5302181 | 2139 | * Returns 1 for connected otherwise 0. |
eeec12bf | 2140 | */ |
1649923d | 2141 | int snd_soc_dapm_get_pin_status(struct snd_soc_codec *codec, const char *pin) |
eeec12bf GG |
2142 | { |
2143 | struct snd_soc_dapm_widget *w; | |
2144 | ||
2145 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
a5302181 | 2146 | if (!strcmp(w->name, pin)) |
eeec12bf GG |
2147 | return w->connected; |
2148 | } | |
2149 | ||
2150 | return 0; | |
2151 | } | |
a5302181 | 2152 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status); |
eeec12bf | 2153 | |
2b97eabc RP |
2154 | /** |
2155 | * snd_soc_dapm_free - free dapm resources | |
2156 | * @socdev: SoC device | |
2157 | * | |
2158 | * Free all dapm widgets and resources. | |
2159 | */ | |
2160 | void snd_soc_dapm_free(struct snd_soc_device *socdev) | |
2161 | { | |
6627a653 | 2162 | struct snd_soc_codec *codec = socdev->card->codec; |
2b97eabc RP |
2163 | |
2164 | snd_soc_dapm_sys_remove(socdev->dev); | |
2165 | dapm_free_widgets(codec); | |
2166 | } | |
2167 | EXPORT_SYMBOL_GPL(snd_soc_dapm_free); | |
2168 | ||
51737470 MB |
2169 | /* |
2170 | * snd_soc_dapm_shutdown - callback for system shutdown | |
2171 | */ | |
2172 | void snd_soc_dapm_shutdown(struct snd_soc_device *socdev) | |
2173 | { | |
2174 | struct snd_soc_codec *codec = socdev->card->codec; | |
2175 | struct snd_soc_dapm_widget *w; | |
2176 | LIST_HEAD(down_list); | |
2177 | int powerdown = 0; | |
2178 | ||
2179 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
2180 | if (w->power) { | |
2181 | dapm_seq_insert(w, &down_list, dapm_down_seq); | |
c2caa4da | 2182 | w->power = 0; |
51737470 MB |
2183 | powerdown = 1; |
2184 | } | |
2185 | } | |
2186 | ||
2187 | /* If there were no widgets to power down we're already in | |
2188 | * standby. | |
2189 | */ | |
2190 | if (powerdown) { | |
2191 | snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_PREPARE); | |
2192 | dapm_seq_run(codec, &down_list, 0, dapm_down_seq); | |
2193 | snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_STANDBY); | |
2194 | } | |
2195 | ||
2196 | snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_OFF); | |
2197 | } | |
2198 | ||
2b97eabc | 2199 | /* Module information */ |
d331124d | 2200 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
2b97eabc RP |
2201 | MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC"); |
2202 | MODULE_LICENSE("GPL"); |