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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 | ||
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); | |
15e4c72f MB |
100 | } |
101 | ||
102 | va_end(args); | |
103 | } | |
104 | ||
2b97eabc | 105 | /* create a new dapm widget */ |
88cb4290 | 106 | static inline struct snd_soc_dapm_widget *dapm_cnew_widget( |
2b97eabc RP |
107 | const struct snd_soc_dapm_widget *_widget) |
108 | { | |
88cb4290 | 109 | return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL); |
2b97eabc RP |
110 | } |
111 | ||
452c5eaa MB |
112 | /** |
113 | * snd_soc_dapm_set_bias_level - set the bias level for the system | |
114 | * @socdev: audio device | |
115 | * @level: level to configure | |
116 | * | |
117 | * Configure the bias (power) levels for the SoC audio device. | |
118 | * | |
119 | * Returns 0 for success else error. | |
120 | */ | |
121 | static int snd_soc_dapm_set_bias_level(struct snd_soc_device *socdev, | |
122 | enum snd_soc_bias_level level) | |
123 | { | |
124 | struct snd_soc_card *card = socdev->card; | |
125 | struct snd_soc_codec *codec = socdev->card->codec; | |
126 | int ret = 0; | |
127 | ||
f83fba8b MB |
128 | switch (level) { |
129 | case SND_SOC_BIAS_ON: | |
130 | dev_dbg(socdev->dev, "Setting full bias\n"); | |
131 | break; | |
132 | case SND_SOC_BIAS_PREPARE: | |
133 | dev_dbg(socdev->dev, "Setting bias prepare\n"); | |
134 | break; | |
135 | case SND_SOC_BIAS_STANDBY: | |
136 | dev_dbg(socdev->dev, "Setting standby bias\n"); | |
137 | break; | |
138 | case SND_SOC_BIAS_OFF: | |
139 | dev_dbg(socdev->dev, "Setting bias off\n"); | |
140 | break; | |
141 | default: | |
142 | dev_err(socdev->dev, "Setting invalid bias %d\n", level); | |
143 | return -EINVAL; | |
144 | } | |
145 | ||
452c5eaa MB |
146 | if (card->set_bias_level) |
147 | ret = card->set_bias_level(card, level); | |
474e09ca MB |
148 | if (ret == 0) { |
149 | if (codec->set_bias_level) | |
150 | ret = codec->set_bias_level(codec, level); | |
151 | else | |
152 | codec->bias_level = level; | |
153 | } | |
452c5eaa MB |
154 | |
155 | return ret; | |
156 | } | |
157 | ||
2b97eabc RP |
158 | /* set up initial codec paths */ |
159 | static void dapm_set_path_status(struct snd_soc_dapm_widget *w, | |
160 | struct snd_soc_dapm_path *p, int i) | |
161 | { | |
162 | switch (w->id) { | |
163 | case snd_soc_dapm_switch: | |
ca9c1aae IM |
164 | case snd_soc_dapm_mixer: |
165 | case snd_soc_dapm_mixer_named_ctl: { | |
2b97eabc | 166 | int val; |
4eaa9819 JS |
167 | struct soc_mixer_control *mc = (struct soc_mixer_control *) |
168 | w->kcontrols[i].private_value; | |
815ecf8d JS |
169 | unsigned int reg = mc->reg; |
170 | unsigned int shift = mc->shift; | |
4eaa9819 | 171 | int max = mc->max; |
815ecf8d JS |
172 | unsigned int mask = (1 << fls(max)) - 1; |
173 | unsigned int invert = mc->invert; | |
2b97eabc RP |
174 | |
175 | val = snd_soc_read(w->codec, reg); | |
176 | val = (val >> shift) & mask; | |
177 | ||
178 | if ((invert && !val) || (!invert && val)) | |
179 | p->connect = 1; | |
180 | else | |
181 | p->connect = 0; | |
182 | } | |
183 | break; | |
184 | case snd_soc_dapm_mux: { | |
185 | struct soc_enum *e = (struct soc_enum *)w->kcontrols[i].private_value; | |
186 | int val, item, bitmask; | |
187 | ||
f8ba0b7b | 188 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
189 | ; |
190 | val = snd_soc_read(w->codec, e->reg); | |
191 | item = (val >> e->shift_l) & (bitmask - 1); | |
192 | ||
193 | p->connect = 0; | |
f8ba0b7b | 194 | for (i = 0; i < e->max; i++) { |
2b97eabc RP |
195 | if (!(strcmp(p->name, e->texts[i])) && item == i) |
196 | p->connect = 1; | |
197 | } | |
198 | } | |
199 | break; | |
2e72f8e3 | 200 | case snd_soc_dapm_value_mux: { |
74155556 | 201 | struct soc_enum *e = (struct soc_enum *) |
2e72f8e3 PU |
202 | w->kcontrols[i].private_value; |
203 | int val, item; | |
204 | ||
205 | val = snd_soc_read(w->codec, e->reg); | |
206 | val = (val >> e->shift_l) & e->mask; | |
207 | for (item = 0; item < e->max; item++) { | |
208 | if (val == e->values[item]) | |
209 | break; | |
210 | } | |
211 | ||
212 | p->connect = 0; | |
213 | for (i = 0; i < e->max; i++) { | |
214 | if (!(strcmp(p->name, e->texts[i])) && item == i) | |
215 | p->connect = 1; | |
216 | } | |
217 | } | |
218 | break; | |
2b97eabc RP |
219 | /* does not effect routing - always connected */ |
220 | case snd_soc_dapm_pga: | |
221 | case snd_soc_dapm_output: | |
222 | case snd_soc_dapm_adc: | |
223 | case snd_soc_dapm_input: | |
224 | case snd_soc_dapm_dac: | |
225 | case snd_soc_dapm_micbias: | |
226 | case snd_soc_dapm_vmid: | |
246d0a17 | 227 | case snd_soc_dapm_supply: |
010ff262 MB |
228 | case snd_soc_dapm_aif_in: |
229 | case snd_soc_dapm_aif_out: | |
2b97eabc RP |
230 | p->connect = 1; |
231 | break; | |
232 | /* does effect routing - dynamically connected */ | |
233 | case snd_soc_dapm_hp: | |
234 | case snd_soc_dapm_mic: | |
235 | case snd_soc_dapm_spk: | |
236 | case snd_soc_dapm_line: | |
237 | case snd_soc_dapm_pre: | |
238 | case snd_soc_dapm_post: | |
239 | p->connect = 0; | |
240 | break; | |
241 | } | |
242 | } | |
243 | ||
74b8f955 | 244 | /* connect mux widget to its interconnecting audio paths */ |
2b97eabc RP |
245 | static int dapm_connect_mux(struct snd_soc_codec *codec, |
246 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, | |
247 | struct snd_soc_dapm_path *path, const char *control_name, | |
248 | const struct snd_kcontrol_new *kcontrol) | |
249 | { | |
250 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
251 | int i; | |
252 | ||
f8ba0b7b | 253 | for (i = 0; i < e->max; i++) { |
2b97eabc RP |
254 | if (!(strcmp(control_name, e->texts[i]))) { |
255 | list_add(&path->list, &codec->dapm_paths); | |
256 | list_add(&path->list_sink, &dest->sources); | |
257 | list_add(&path->list_source, &src->sinks); | |
258 | path->name = (char*)e->texts[i]; | |
259 | dapm_set_path_status(dest, path, 0); | |
260 | return 0; | |
261 | } | |
262 | } | |
263 | ||
264 | return -ENODEV; | |
265 | } | |
266 | ||
74b8f955 | 267 | /* connect mixer widget to its interconnecting audio paths */ |
2b97eabc RP |
268 | static int dapm_connect_mixer(struct snd_soc_codec *codec, |
269 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, | |
270 | struct snd_soc_dapm_path *path, const char *control_name) | |
271 | { | |
272 | int i; | |
273 | ||
274 | /* search for mixer kcontrol */ | |
275 | for (i = 0; i < dest->num_kcontrols; i++) { | |
276 | if (!strcmp(control_name, dest->kcontrols[i].name)) { | |
277 | list_add(&path->list, &codec->dapm_paths); | |
278 | list_add(&path->list_sink, &dest->sources); | |
279 | list_add(&path->list_source, &src->sinks); | |
280 | path->name = dest->kcontrols[i].name; | |
281 | dapm_set_path_status(dest, path, i); | |
282 | return 0; | |
283 | } | |
284 | } | |
285 | return -ENODEV; | |
286 | } | |
287 | ||
288 | /* update dapm codec register bits */ | |
289 | static int dapm_update_bits(struct snd_soc_dapm_widget *widget) | |
290 | { | |
291 | int change, power; | |
46f5822f | 292 | unsigned int old, new; |
2b97eabc RP |
293 | struct snd_soc_codec *codec = widget->codec; |
294 | ||
295 | /* check for valid widgets */ | |
296 | if (widget->reg < 0 || widget->id == snd_soc_dapm_input || | |
297 | widget->id == snd_soc_dapm_output || | |
298 | widget->id == snd_soc_dapm_hp || | |
299 | widget->id == snd_soc_dapm_mic || | |
300 | widget->id == snd_soc_dapm_line || | |
301 | widget->id == snd_soc_dapm_spk) | |
302 | return 0; | |
303 | ||
304 | power = widget->power; | |
305 | if (widget->invert) | |
306 | power = (power ? 0:1); | |
307 | ||
308 | old = snd_soc_read(codec, widget->reg); | |
309 | new = (old & ~(0x1 << widget->shift)) | (power << widget->shift); | |
310 | ||
311 | change = old != new; | |
312 | if (change) { | |
12ef193d TK |
313 | pop_dbg(codec->pop_time, "pop test %s : %s in %d ms\n", |
314 | widget->name, widget->power ? "on" : "off", | |
315 | codec->pop_time); | |
12ef193d | 316 | pop_wait(codec->pop_time); |
69224719 | 317 | snd_soc_write(codec, widget->reg, new); |
2b97eabc | 318 | } |
c1286b86 MB |
319 | pr_debug("reg %x old %x new %x change %d\n", widget->reg, |
320 | old, new, change); | |
2b97eabc RP |
321 | return change; |
322 | } | |
323 | ||
2b97eabc RP |
324 | /* create new dapm mixer control */ |
325 | static int dapm_new_mixer(struct snd_soc_codec *codec, | |
326 | struct snd_soc_dapm_widget *w) | |
327 | { | |
328 | int i, ret = 0; | |
219b93f5 | 329 | size_t name_len; |
2b97eabc RP |
330 | struct snd_soc_dapm_path *path; |
331 | ||
332 | /* add kcontrol */ | |
333 | for (i = 0; i < w->num_kcontrols; i++) { | |
334 | ||
335 | /* match name */ | |
336 | list_for_each_entry(path, &w->sources, list_sink) { | |
337 | ||
338 | /* mixer/mux paths name must match control name */ | |
339 | if (path->name != (char*)w->kcontrols[i].name) | |
340 | continue; | |
341 | ||
ca9c1aae IM |
342 | /* add dapm control with long name. |
343 | * for dapm_mixer this is the concatenation of the | |
344 | * mixer and kcontrol name. | |
345 | * for dapm_mixer_named_ctl this is simply the | |
346 | * kcontrol name. | |
347 | */ | |
348 | name_len = strlen(w->kcontrols[i].name) + 1; | |
07495f3e | 349 | if (w->id != snd_soc_dapm_mixer_named_ctl) |
ca9c1aae IM |
350 | name_len += 1 + strlen(w->name); |
351 | ||
219b93f5 | 352 | path->long_name = kmalloc(name_len, GFP_KERNEL); |
ca9c1aae | 353 | |
2b97eabc RP |
354 | if (path->long_name == NULL) |
355 | return -ENOMEM; | |
356 | ||
ca9c1aae | 357 | switch (w->id) { |
ca9c1aae IM |
358 | default: |
359 | snprintf(path->long_name, name_len, "%s %s", | |
360 | w->name, w->kcontrols[i].name); | |
07495f3e | 361 | break; |
ca9c1aae IM |
362 | case snd_soc_dapm_mixer_named_ctl: |
363 | snprintf(path->long_name, name_len, "%s", | |
364 | w->kcontrols[i].name); | |
07495f3e | 365 | break; |
ca9c1aae IM |
366 | } |
367 | ||
219b93f5 MB |
368 | path->long_name[name_len - 1] = '\0'; |
369 | ||
2b97eabc RP |
370 | path->kcontrol = snd_soc_cnew(&w->kcontrols[i], w, |
371 | path->long_name); | |
372 | ret = snd_ctl_add(codec->card, path->kcontrol); | |
373 | if (ret < 0) { | |
6553e192 MB |
374 | printk(KERN_ERR "asoc: failed to add dapm kcontrol %s: %d\n", |
375 | path->long_name, | |
376 | ret); | |
2b97eabc RP |
377 | kfree(path->long_name); |
378 | path->long_name = NULL; | |
379 | return ret; | |
380 | } | |
381 | } | |
382 | } | |
383 | return ret; | |
384 | } | |
385 | ||
386 | /* create new dapm mux control */ | |
387 | static int dapm_new_mux(struct snd_soc_codec *codec, | |
388 | struct snd_soc_dapm_widget *w) | |
389 | { | |
390 | struct snd_soc_dapm_path *path = NULL; | |
391 | struct snd_kcontrol *kcontrol; | |
392 | int ret = 0; | |
393 | ||
394 | if (!w->num_kcontrols) { | |
395 | printk(KERN_ERR "asoc: mux %s has no controls\n", w->name); | |
396 | return -EINVAL; | |
397 | } | |
398 | ||
399 | kcontrol = snd_soc_cnew(&w->kcontrols[0], w, w->name); | |
400 | ret = snd_ctl_add(codec->card, kcontrol); | |
401 | if (ret < 0) | |
402 | goto err; | |
403 | ||
404 | list_for_each_entry(path, &w->sources, list_sink) | |
405 | path->kcontrol = kcontrol; | |
406 | ||
407 | return ret; | |
408 | ||
409 | err: | |
410 | printk(KERN_ERR "asoc: failed to add kcontrol %s\n", w->name); | |
411 | return ret; | |
412 | } | |
413 | ||
414 | /* create new dapm volume control */ | |
415 | static int dapm_new_pga(struct snd_soc_codec *codec, | |
416 | struct snd_soc_dapm_widget *w) | |
417 | { | |
a6c65736 MB |
418 | if (w->num_kcontrols) |
419 | pr_err("asoc: PGA controls not supported: '%s'\n", w->name); | |
2b97eabc | 420 | |
a6c65736 | 421 | return 0; |
2b97eabc RP |
422 | } |
423 | ||
424 | /* reset 'walked' bit for each dapm path */ | |
425 | static inline void dapm_clear_walk(struct snd_soc_codec *codec) | |
426 | { | |
427 | struct snd_soc_dapm_path *p; | |
428 | ||
429 | list_for_each_entry(p, &codec->dapm_paths, list) | |
430 | p->walked = 0; | |
431 | } | |
432 | ||
433 | /* | |
434 | * Recursively check for a completed path to an active or physically connected | |
435 | * output widget. Returns number of complete paths. | |
436 | */ | |
437 | static int is_connected_output_ep(struct snd_soc_dapm_widget *widget) | |
438 | { | |
439 | struct snd_soc_dapm_path *path; | |
440 | int con = 0; | |
441 | ||
246d0a17 MB |
442 | if (widget->id == snd_soc_dapm_supply) |
443 | return 0; | |
444 | ||
010ff262 MB |
445 | switch (widget->id) { |
446 | case snd_soc_dapm_adc: | |
447 | case snd_soc_dapm_aif_out: | |
448 | if (widget->active) | |
449 | return 1; | |
450 | default: | |
451 | break; | |
452 | } | |
2b97eabc RP |
453 | |
454 | if (widget->connected) { | |
455 | /* connected pin ? */ | |
456 | if (widget->id == snd_soc_dapm_output && !widget->ext) | |
457 | return 1; | |
458 | ||
459 | /* connected jack or spk ? */ | |
460 | if (widget->id == snd_soc_dapm_hp || widget->id == snd_soc_dapm_spk || | |
eaeae5d9 | 461 | (widget->id == snd_soc_dapm_line && !list_empty(&widget->sources))) |
2b97eabc RP |
462 | return 1; |
463 | } | |
464 | ||
465 | list_for_each_entry(path, &widget->sinks, list_source) { | |
466 | if (path->walked) | |
467 | continue; | |
468 | ||
469 | if (path->sink && path->connect) { | |
470 | path->walked = 1; | |
471 | con += is_connected_output_ep(path->sink); | |
472 | } | |
473 | } | |
474 | ||
475 | return con; | |
476 | } | |
477 | ||
478 | /* | |
479 | * Recursively check for a completed path to an active or physically connected | |
480 | * input widget. Returns number of complete paths. | |
481 | */ | |
482 | static int is_connected_input_ep(struct snd_soc_dapm_widget *widget) | |
483 | { | |
484 | struct snd_soc_dapm_path *path; | |
485 | int con = 0; | |
486 | ||
246d0a17 MB |
487 | if (widget->id == snd_soc_dapm_supply) |
488 | return 0; | |
489 | ||
2b97eabc | 490 | /* active stream ? */ |
010ff262 MB |
491 | switch (widget->id) { |
492 | case snd_soc_dapm_dac: | |
493 | case snd_soc_dapm_aif_in: | |
494 | if (widget->active) | |
495 | return 1; | |
496 | default: | |
497 | break; | |
498 | } | |
2b97eabc RP |
499 | |
500 | if (widget->connected) { | |
501 | /* connected pin ? */ | |
502 | if (widget->id == snd_soc_dapm_input && !widget->ext) | |
503 | return 1; | |
504 | ||
505 | /* connected VMID/Bias for lower pops */ | |
506 | if (widget->id == snd_soc_dapm_vmid) | |
507 | return 1; | |
508 | ||
509 | /* connected jack ? */ | |
eaeae5d9 PU |
510 | if (widget->id == snd_soc_dapm_mic || |
511 | (widget->id == snd_soc_dapm_line && !list_empty(&widget->sinks))) | |
2b97eabc RP |
512 | return 1; |
513 | } | |
514 | ||
515 | list_for_each_entry(path, &widget->sources, list_sink) { | |
516 | if (path->walked) | |
517 | continue; | |
518 | ||
519 | if (path->source && path->connect) { | |
520 | path->walked = 1; | |
521 | con += is_connected_input_ep(path->source); | |
522 | } | |
523 | } | |
524 | ||
525 | return con; | |
526 | } | |
527 | ||
e2be2ccf JN |
528 | /* |
529 | * Handler for generic register modifier widget. | |
530 | */ | |
531 | int dapm_reg_event(struct snd_soc_dapm_widget *w, | |
532 | struct snd_kcontrol *kcontrol, int event) | |
533 | { | |
534 | unsigned int val; | |
535 | ||
536 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
537 | val = w->on_val; | |
538 | else | |
539 | val = w->off_val; | |
540 | ||
541 | snd_soc_update_bits(w->codec, -(w->reg + 1), | |
542 | w->mask << w->shift, val << w->shift); | |
543 | ||
544 | return 0; | |
545 | } | |
11589418 | 546 | EXPORT_SYMBOL_GPL(dapm_reg_event); |
e2be2ccf | 547 | |
025756ec MB |
548 | /* Standard power change method, used to apply power changes to most |
549 | * widgets. | |
550 | */ | |
551 | static int dapm_generic_apply_power(struct snd_soc_dapm_widget *w) | |
552 | { | |
553 | int ret; | |
554 | ||
555 | /* call any power change event handlers */ | |
556 | if (w->event) | |
557 | pr_debug("power %s event for %s flags %x\n", | |
558 | w->power ? "on" : "off", | |
559 | w->name, w->event_flags); | |
560 | ||
561 | /* power up pre event */ | |
562 | if (w->power && w->event && | |
563 | (w->event_flags & SND_SOC_DAPM_PRE_PMU)) { | |
564 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMU); | |
565 | if (ret < 0) | |
566 | return ret; | |
567 | } | |
568 | ||
569 | /* power down pre event */ | |
570 | if (!w->power && w->event && | |
571 | (w->event_flags & SND_SOC_DAPM_PRE_PMD)) { | |
572 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMD); | |
573 | if (ret < 0) | |
574 | return ret; | |
575 | } | |
576 | ||
025756ec MB |
577 | dapm_update_bits(w); |
578 | ||
025756ec MB |
579 | /* power up post event */ |
580 | if (w->power && w->event && | |
581 | (w->event_flags & SND_SOC_DAPM_POST_PMU)) { | |
582 | ret = w->event(w, | |
583 | NULL, SND_SOC_DAPM_POST_PMU); | |
584 | if (ret < 0) | |
585 | return ret; | |
586 | } | |
587 | ||
588 | /* power down post event */ | |
589 | if (!w->power && w->event && | |
590 | (w->event_flags & SND_SOC_DAPM_POST_PMD)) { | |
591 | ret = w->event(w, NULL, SND_SOC_DAPM_POST_PMD); | |
592 | if (ret < 0) | |
593 | return ret; | |
594 | } | |
595 | ||
596 | return 0; | |
597 | } | |
598 | ||
cd0f2d47 MB |
599 | /* Generic check to see if a widget should be powered. |
600 | */ | |
601 | static int dapm_generic_check_power(struct snd_soc_dapm_widget *w) | |
602 | { | |
603 | int in, out; | |
604 | ||
605 | in = is_connected_input_ep(w); | |
606 | dapm_clear_walk(w->codec); | |
607 | out = is_connected_output_ep(w); | |
608 | dapm_clear_walk(w->codec); | |
609 | return out != 0 && in != 0; | |
610 | } | |
611 | ||
6ea31b9f MB |
612 | /* Check to see if an ADC has power */ |
613 | static int dapm_adc_check_power(struct snd_soc_dapm_widget *w) | |
614 | { | |
615 | int in; | |
616 | ||
617 | if (w->active) { | |
618 | in = is_connected_input_ep(w); | |
619 | dapm_clear_walk(w->codec); | |
620 | return in != 0; | |
621 | } else { | |
622 | return dapm_generic_check_power(w); | |
623 | } | |
624 | } | |
625 | ||
626 | /* Check to see if a DAC has power */ | |
627 | static int dapm_dac_check_power(struct snd_soc_dapm_widget *w) | |
628 | { | |
629 | int out; | |
630 | ||
631 | if (w->active) { | |
632 | out = is_connected_output_ep(w); | |
633 | dapm_clear_walk(w->codec); | |
634 | return out != 0; | |
635 | } else { | |
636 | return dapm_generic_check_power(w); | |
637 | } | |
638 | } | |
639 | ||
246d0a17 MB |
640 | /* Check to see if a power supply is needed */ |
641 | static int dapm_supply_check_power(struct snd_soc_dapm_widget *w) | |
642 | { | |
643 | struct snd_soc_dapm_path *path; | |
644 | int power = 0; | |
645 | ||
646 | /* Check if one of our outputs is connected */ | |
647 | list_for_each_entry(path, &w->sinks, list_source) { | |
215edda3 MB |
648 | if (path->connected && |
649 | !path->connected(path->source, path->sink)) | |
650 | continue; | |
651 | ||
246d0a17 MB |
652 | if (path->sink && path->sink->power_check && |
653 | path->sink->power_check(path->sink)) { | |
654 | power = 1; | |
655 | break; | |
656 | } | |
657 | } | |
658 | ||
659 | dapm_clear_walk(w->codec); | |
660 | ||
661 | return power; | |
662 | } | |
663 | ||
38357ab2 MB |
664 | static int dapm_seq_compare(struct snd_soc_dapm_widget *a, |
665 | struct snd_soc_dapm_widget *b, | |
666 | int sort[]) | |
42aa3418 | 667 | { |
d207c68d MB |
668 | if (a->codec != b->codec) |
669 | return (unsigned long)a - (unsigned long)b; | |
38357ab2 MB |
670 | if (sort[a->id] != sort[b->id]) |
671 | return sort[a->id] - sort[b->id]; | |
b22ead2a MB |
672 | if (a->reg != b->reg) |
673 | return a->reg - b->reg; | |
42aa3418 | 674 | |
38357ab2 MB |
675 | return 0; |
676 | } | |
42aa3418 | 677 | |
38357ab2 MB |
678 | /* Insert a widget in order into a DAPM power sequence. */ |
679 | static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget, | |
680 | struct list_head *list, | |
681 | int sort[]) | |
682 | { | |
683 | struct snd_soc_dapm_widget *w; | |
684 | ||
685 | list_for_each_entry(w, list, power_list) | |
686 | if (dapm_seq_compare(new_widget, w, sort) < 0) { | |
687 | list_add_tail(&new_widget->power_list, &w->power_list); | |
688 | return; | |
689 | } | |
690 | ||
691 | list_add_tail(&new_widget->power_list, list); | |
692 | } | |
693 | ||
b22ead2a MB |
694 | /* Apply the coalesced changes from a DAPM sequence */ |
695 | static void dapm_seq_run_coalesced(struct snd_soc_codec *codec, | |
696 | struct list_head *pending) | |
163cac06 MB |
697 | { |
698 | struct snd_soc_dapm_widget *w; | |
81628103 | 699 | int reg, power, ret; |
b22ead2a MB |
700 | unsigned int value = 0; |
701 | unsigned int mask = 0; | |
702 | unsigned int cur_mask; | |
703 | ||
704 | reg = list_first_entry(pending, struct snd_soc_dapm_widget, | |
705 | power_list)->reg; | |
706 | ||
707 | list_for_each_entry(w, pending, power_list) { | |
708 | cur_mask = 1 << w->shift; | |
709 | BUG_ON(reg != w->reg); | |
710 | ||
711 | if (w->invert) | |
712 | power = !w->power; | |
713 | else | |
714 | power = w->power; | |
715 | ||
716 | mask |= cur_mask; | |
717 | if (power) | |
718 | value |= cur_mask; | |
719 | ||
720 | pop_dbg(codec->pop_time, | |
721 | "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n", | |
722 | w->name, reg, value, mask); | |
81628103 MB |
723 | |
724 | /* power up pre event */ | |
725 | if (w->power && w->event && | |
726 | (w->event_flags & SND_SOC_DAPM_PRE_PMU)) { | |
727 | pop_dbg(codec->pop_time, "pop test : %s PRE_PMU\n", | |
728 | w->name); | |
729 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMU); | |
42aa3418 | 730 | if (ret < 0) |
81628103 MB |
731 | pr_err("%s: pre event failed: %d\n", |
732 | w->name, ret); | |
733 | } | |
734 | ||
735 | /* power down pre event */ | |
736 | if (!w->power && w->event && | |
737 | (w->event_flags & SND_SOC_DAPM_PRE_PMD)) { | |
738 | pop_dbg(codec->pop_time, "pop test : %s PRE_PMD\n", | |
739 | w->name); | |
740 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMD); | |
42aa3418 | 741 | if (ret < 0) |
81628103 MB |
742 | pr_err("%s: pre event failed: %d\n", |
743 | w->name, ret); | |
42aa3418 | 744 | } |
81628103 MB |
745 | } |
746 | ||
747 | if (reg >= 0) { | |
748 | pop_dbg(codec->pop_time, | |
749 | "pop test : Applying 0x%x/0x%x to %x in %dms\n", | |
750 | value, mask, reg, codec->pop_time); | |
751 | pop_wait(codec->pop_time); | |
752 | snd_soc_update_bits(codec, reg, mask, value); | |
b22ead2a MB |
753 | } |
754 | ||
81628103 MB |
755 | list_for_each_entry(w, pending, power_list) { |
756 | /* power up post event */ | |
757 | if (w->power && w->event && | |
758 | (w->event_flags & SND_SOC_DAPM_POST_PMU)) { | |
759 | pop_dbg(codec->pop_time, "pop test : %s POST_PMU\n", | |
760 | w->name); | |
42aa3418 MB |
761 | ret = w->event(w, |
762 | NULL, SND_SOC_DAPM_POST_PMU); | |
763 | if (ret < 0) | |
81628103 MB |
764 | pr_err("%s: post event failed: %d\n", |
765 | w->name, ret); | |
766 | } | |
767 | ||
768 | /* power down post event */ | |
769 | if (!w->power && w->event && | |
770 | (w->event_flags & SND_SOC_DAPM_POST_PMD)) { | |
771 | pop_dbg(codec->pop_time, "pop test : %s POST_PMD\n", | |
772 | w->name); | |
773 | ret = w->event(w, NULL, SND_SOC_DAPM_POST_PMD); | |
42aa3418 | 774 | if (ret < 0) |
81628103 MB |
775 | pr_err("%s: post event failed: %d\n", |
776 | w->name, ret); | |
42aa3418 | 777 | } |
81628103 | 778 | } |
b22ead2a | 779 | } |
42aa3418 | 780 | |
b22ead2a MB |
781 | /* Apply a DAPM power sequence. |
782 | * | |
783 | * We walk over a pre-sorted list of widgets to apply power to. In | |
784 | * order to minimise the number of writes to the device required | |
785 | * multiple widgets will be updated in a single write where possible. | |
786 | * Currently anything that requires more than a single write is not | |
787 | * handled. | |
788 | */ | |
789 | static void dapm_seq_run(struct snd_soc_codec *codec, struct list_head *list, | |
790 | int event, int sort[]) | |
791 | { | |
792 | struct snd_soc_dapm_widget *w, *n; | |
793 | LIST_HEAD(pending); | |
794 | int cur_sort = -1; | |
795 | int cur_reg = SND_SOC_NOPM; | |
163cac06 MB |
796 | int ret; |
797 | ||
b22ead2a MB |
798 | list_for_each_entry_safe(w, n, list, power_list) { |
799 | ret = 0; | |
800 | ||
801 | /* Do we need to apply any queued changes? */ | |
802 | if (sort[w->id] != cur_sort || w->reg != cur_reg) { | |
803 | if (!list_empty(&pending)) | |
804 | dapm_seq_run_coalesced(codec, &pending); | |
805 | ||
806 | INIT_LIST_HEAD(&pending); | |
807 | cur_sort = -1; | |
808 | cur_reg = SND_SOC_NOPM; | |
809 | } | |
810 | ||
163cac06 MB |
811 | switch (w->id) { |
812 | case snd_soc_dapm_pre: | |
813 | if (!w->event) | |
b22ead2a MB |
814 | list_for_each_entry_safe_continue(w, n, list, |
815 | power_list); | |
163cac06 | 816 | |
b22ead2a | 817 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
818 | ret = w->event(w, |
819 | NULL, SND_SOC_DAPM_PRE_PMU); | |
b22ead2a | 820 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
821 | ret = w->event(w, |
822 | NULL, SND_SOC_DAPM_PRE_PMD); | |
163cac06 MB |
823 | break; |
824 | ||
825 | case snd_soc_dapm_post: | |
826 | if (!w->event) | |
b22ead2a MB |
827 | list_for_each_entry_safe_continue(w, n, list, |
828 | power_list); | |
163cac06 | 829 | |
b22ead2a | 830 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
831 | ret = w->event(w, |
832 | NULL, SND_SOC_DAPM_POST_PMU); | |
b22ead2a | 833 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
834 | ret = w->event(w, |
835 | NULL, SND_SOC_DAPM_POST_PMD); | |
163cac06 MB |
836 | break; |
837 | ||
b22ead2a MB |
838 | case snd_soc_dapm_input: |
839 | case snd_soc_dapm_output: | |
840 | case snd_soc_dapm_hp: | |
841 | case snd_soc_dapm_mic: | |
842 | case snd_soc_dapm_line: | |
843 | case snd_soc_dapm_spk: | |
844 | /* No register support currently */ | |
163cac06 | 845 | ret = dapm_generic_apply_power(w); |
163cac06 | 846 | break; |
b22ead2a MB |
847 | |
848 | default: | |
81628103 MB |
849 | /* Queue it up for application */ |
850 | cur_sort = sort[w->id]; | |
851 | cur_reg = w->reg; | |
852 | list_move(&w->power_list, &pending); | |
853 | break; | |
163cac06 | 854 | } |
b22ead2a MB |
855 | |
856 | if (ret < 0) | |
857 | pr_err("Failed to apply widget power: %d\n", | |
858 | ret); | |
6ea31b9f | 859 | } |
b22ead2a MB |
860 | |
861 | if (!list_empty(&pending)) | |
862 | dapm_seq_run_coalesced(codec, &pending); | |
42aa3418 MB |
863 | } |
864 | ||
2b97eabc RP |
865 | /* |
866 | * Scan each dapm widget for complete audio path. | |
867 | * A complete path is a route that has valid endpoints i.e.:- | |
868 | * | |
869 | * o DAC to output pin. | |
870 | * o Input Pin to ADC. | |
871 | * o Input pin to Output pin (bypass, sidetone) | |
872 | * o DAC to ADC (loopback). | |
873 | */ | |
d9c96cf3 | 874 | static int dapm_power_widgets(struct snd_soc_codec *codec, int event) |
2b97eabc | 875 | { |
452c5eaa | 876 | struct snd_soc_device *socdev = codec->socdev; |
2b97eabc | 877 | struct snd_soc_dapm_widget *w; |
291f3bbc MB |
878 | LIST_HEAD(up_list); |
879 | LIST_HEAD(down_list); | |
6d3ddc81 | 880 | int ret = 0; |
38357ab2 | 881 | int power; |
452c5eaa | 882 | int sys_power = 0; |
6d3ddc81 | 883 | |
6d3ddc81 MB |
884 | /* Check which widgets we need to power and store them in |
885 | * lists indicating if they should be powered up or down. | |
886 | */ | |
887 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
888 | switch (w->id) { | |
889 | case snd_soc_dapm_pre: | |
291f3bbc | 890 | dapm_seq_insert(w, &down_list, dapm_down_seq); |
6d3ddc81 MB |
891 | break; |
892 | case snd_soc_dapm_post: | |
291f3bbc | 893 | dapm_seq_insert(w, &up_list, dapm_up_seq); |
6d3ddc81 MB |
894 | break; |
895 | ||
896 | default: | |
897 | if (!w->power_check) | |
898 | continue; | |
899 | ||
50b6bce5 MB |
900 | /* If we're suspending then pull down all the |
901 | * power. */ | |
902 | switch (event) { | |
903 | case SND_SOC_DAPM_STREAM_SUSPEND: | |
904 | power = 0; | |
905 | break; | |
906 | ||
907 | default: | |
da34183e MB |
908 | if (!w->force) |
909 | power = w->power_check(w); | |
910 | else | |
911 | power = 1; | |
50b6bce5 MB |
912 | if (power) |
913 | sys_power = 1; | |
914 | break; | |
915 | } | |
452c5eaa | 916 | |
6d3ddc81 MB |
917 | if (w->power == power) |
918 | continue; | |
919 | ||
920 | if (power) | |
291f3bbc | 921 | dapm_seq_insert(w, &up_list, dapm_up_seq); |
6d3ddc81 | 922 | else |
291f3bbc | 923 | dapm_seq_insert(w, &down_list, dapm_down_seq); |
6d3ddc81 MB |
924 | |
925 | w->power = power; | |
926 | break; | |
927 | } | |
2b97eabc RP |
928 | } |
929 | ||
b14b76a5 MB |
930 | /* If there are no DAPM widgets then try to figure out power from the |
931 | * event type. | |
932 | */ | |
933 | if (list_empty(&codec->dapm_widgets)) { | |
934 | switch (event) { | |
935 | case SND_SOC_DAPM_STREAM_START: | |
936 | case SND_SOC_DAPM_STREAM_RESUME: | |
937 | sys_power = 1; | |
938 | break; | |
50b6bce5 MB |
939 | case SND_SOC_DAPM_STREAM_SUSPEND: |
940 | sys_power = 0; | |
941 | break; | |
b14b76a5 | 942 | case SND_SOC_DAPM_STREAM_NOP: |
a96ca338 MB |
943 | switch (codec->bias_level) { |
944 | case SND_SOC_BIAS_STANDBY: | |
945 | case SND_SOC_BIAS_OFF: | |
946 | sys_power = 0; | |
947 | break; | |
948 | default: | |
949 | sys_power = 1; | |
950 | break; | |
951 | } | |
50b6bce5 | 952 | break; |
b14b76a5 MB |
953 | default: |
954 | break; | |
955 | } | |
956 | } | |
957 | ||
a96ca338 MB |
958 | if (sys_power && codec->bias_level == SND_SOC_BIAS_OFF) { |
959 | ret = snd_soc_dapm_set_bias_level(socdev, | |
960 | SND_SOC_BIAS_STANDBY); | |
961 | if (ret != 0) | |
962 | pr_err("Failed to turn on bias: %d\n", ret); | |
963 | } | |
964 | ||
452c5eaa MB |
965 | /* If we're changing to all on or all off then prepare */ |
966 | if ((sys_power && codec->bias_level == SND_SOC_BIAS_STANDBY) || | |
967 | (!sys_power && codec->bias_level == SND_SOC_BIAS_ON)) { | |
968 | ret = snd_soc_dapm_set_bias_level(socdev, | |
969 | SND_SOC_BIAS_PREPARE); | |
970 | if (ret != 0) | |
971 | pr_err("Failed to prepare bias: %d\n", ret); | |
972 | } | |
973 | ||
6d3ddc81 | 974 | /* Power down widgets first; try to avoid amplifying pops. */ |
291f3bbc | 975 | dapm_seq_run(codec, &down_list, event, dapm_down_seq); |
2b97eabc | 976 | |
6d3ddc81 | 977 | /* Now power up. */ |
291f3bbc | 978 | dapm_seq_run(codec, &up_list, event, dapm_up_seq); |
2b97eabc | 979 | |
452c5eaa MB |
980 | /* If we just powered the last thing off drop to standby bias */ |
981 | if (codec->bias_level == SND_SOC_BIAS_PREPARE && !sys_power) { | |
982 | ret = snd_soc_dapm_set_bias_level(socdev, | |
983 | SND_SOC_BIAS_STANDBY); | |
984 | if (ret != 0) | |
985 | pr_err("Failed to apply standby bias: %d\n", ret); | |
986 | } | |
987 | ||
a96ca338 MB |
988 | /* If we're in standby and can support bias off then do that */ |
989 | if (codec->bias_level == SND_SOC_BIAS_STANDBY && | |
990 | codec->idle_bias_off) { | |
991 | ret = snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_OFF); | |
992 | if (ret != 0) | |
993 | pr_err("Failed to turn off bias: %d\n", ret); | |
994 | } | |
995 | ||
452c5eaa MB |
996 | /* If we just powered up then move to active bias */ |
997 | if (codec->bias_level == SND_SOC_BIAS_PREPARE && sys_power) { | |
998 | ret = snd_soc_dapm_set_bias_level(socdev, | |
999 | SND_SOC_BIAS_ON); | |
1000 | if (ret != 0) | |
1001 | pr_err("Failed to apply active bias: %d\n", ret); | |
1002 | } | |
1003 | ||
cb507e7e MB |
1004 | pop_dbg(codec->pop_time, "DAPM sequencing finished, waiting %dms\n", |
1005 | codec->pop_time); | |
69224719 | 1006 | pop_wait(codec->pop_time); |
cb507e7e | 1007 | |
42aa3418 | 1008 | return 0; |
2b97eabc RP |
1009 | } |
1010 | ||
79fb9387 MB |
1011 | #ifdef CONFIG_DEBUG_FS |
1012 | static int dapm_widget_power_open_file(struct inode *inode, struct file *file) | |
1013 | { | |
1014 | file->private_data = inode->i_private; | |
1015 | return 0; | |
1016 | } | |
1017 | ||
1018 | static ssize_t dapm_widget_power_read_file(struct file *file, | |
1019 | char __user *user_buf, | |
1020 | size_t count, loff_t *ppos) | |
1021 | { | |
1022 | struct snd_soc_dapm_widget *w = file->private_data; | |
1023 | char *buf; | |
1024 | int in, out; | |
1025 | ssize_t ret; | |
1026 | struct snd_soc_dapm_path *p = NULL; | |
1027 | ||
1028 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); | |
1029 | if (!buf) | |
1030 | return -ENOMEM; | |
1031 | ||
1032 | in = is_connected_input_ep(w); | |
1033 | dapm_clear_walk(w->codec); | |
1034 | out = is_connected_output_ep(w); | |
1035 | dapm_clear_walk(w->codec); | |
1036 | ||
d033c36a | 1037 | ret = snprintf(buf, PAGE_SIZE, "%s: %s in %d out %d", |
79fb9387 MB |
1038 | w->name, w->power ? "On" : "Off", in, out); |
1039 | ||
d033c36a MB |
1040 | if (w->reg >= 0) |
1041 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
1042 | " - R%d(0x%x) bit %d", | |
1043 | w->reg, w->reg, w->shift); | |
1044 | ||
1045 | ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n"); | |
1046 | ||
3eef08ba MB |
1047 | if (w->sname) |
1048 | ret += snprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n", | |
1049 | w->sname, | |
1050 | w->active ? "active" : "inactive"); | |
79fb9387 MB |
1051 | |
1052 | list_for_each_entry(p, &w->sources, list_sink) { | |
215edda3 MB |
1053 | if (p->connected && !p->connected(w, p->sink)) |
1054 | continue; | |
1055 | ||
79fb9387 MB |
1056 | if (p->connect) |
1057 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
1058 | " in %s %s\n", | |
1059 | p->name ? p->name : "static", | |
1060 | p->source->name); | |
1061 | } | |
1062 | list_for_each_entry(p, &w->sinks, list_source) { | |
215edda3 MB |
1063 | if (p->connected && !p->connected(w, p->sink)) |
1064 | continue; | |
1065 | ||
79fb9387 MB |
1066 | if (p->connect) |
1067 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
1068 | " out %s %s\n", | |
1069 | p->name ? p->name : "static", | |
1070 | p->sink->name); | |
1071 | } | |
1072 | ||
1073 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); | |
1074 | ||
1075 | kfree(buf); | |
1076 | return ret; | |
1077 | } | |
1078 | ||
1079 | static const struct file_operations dapm_widget_power_fops = { | |
1080 | .open = dapm_widget_power_open_file, | |
1081 | .read = dapm_widget_power_read_file, | |
1082 | }; | |
1083 | ||
1084 | void snd_soc_dapm_debugfs_init(struct snd_soc_codec *codec) | |
1085 | { | |
1086 | struct snd_soc_dapm_widget *w; | |
1087 | struct dentry *d; | |
1088 | ||
1089 | if (!codec->debugfs_dapm) | |
1090 | return; | |
1091 | ||
1092 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
1093 | if (!w->name) | |
1094 | continue; | |
1095 | ||
1096 | d = debugfs_create_file(w->name, 0444, | |
1097 | codec->debugfs_dapm, w, | |
1098 | &dapm_widget_power_fops); | |
1099 | if (!d) | |
1100 | printk(KERN_WARNING | |
1101 | "ASoC: Failed to create %s debugfs file\n", | |
1102 | w->name); | |
1103 | } | |
1104 | } | |
1105 | #else | |
1106 | void snd_soc_dapm_debugfs_init(struct snd_soc_codec *codec) | |
1107 | { | |
1108 | } | |
1109 | #endif | |
1110 | ||
2b97eabc | 1111 | /* test and update the power status of a mux widget */ |
d9c96cf3 | 1112 | static int dapm_mux_update_power(struct snd_soc_dapm_widget *widget, |
3a65577d MB |
1113 | struct snd_kcontrol *kcontrol, int change, |
1114 | int mux, struct soc_enum *e) | |
2b97eabc RP |
1115 | { |
1116 | struct snd_soc_dapm_path *path; | |
1117 | int found = 0; | |
1118 | ||
eff317d0 PU |
1119 | if (widget->id != snd_soc_dapm_mux && |
1120 | widget->id != snd_soc_dapm_value_mux) | |
2b97eabc RP |
1121 | return -ENODEV; |
1122 | ||
3a65577d | 1123 | if (!change) |
2b97eabc RP |
1124 | return 0; |
1125 | ||
1126 | /* find dapm widget path assoc with kcontrol */ | |
1127 | list_for_each_entry(path, &widget->codec->dapm_paths, list) { | |
1128 | if (path->kcontrol != kcontrol) | |
1129 | continue; | |
1130 | ||
cb01e2b9 | 1131 | if (!path->name || !e->texts[mux]) |
2b97eabc RP |
1132 | continue; |
1133 | ||
1134 | found = 1; | |
1135 | /* we now need to match the string in the enum to the path */ | |
cb01e2b9 | 1136 | if (!(strcmp(path->name, e->texts[mux]))) |
2b97eabc RP |
1137 | path->connect = 1; /* new connection */ |
1138 | else | |
1139 | path->connect = 0; /* old connection must be powered down */ | |
1140 | } | |
1141 | ||
b91b8fa0 | 1142 | if (found) |
2b97eabc RP |
1143 | dapm_power_widgets(widget->codec, SND_SOC_DAPM_STREAM_NOP); |
1144 | ||
1145 | return 0; | |
1146 | } | |
2b97eabc | 1147 | |
1b075e3f | 1148 | /* test and update the power status of a mixer or switch widget */ |
d9c96cf3 | 1149 | static int dapm_mixer_update_power(struct snd_soc_dapm_widget *widget, |
283375ce | 1150 | struct snd_kcontrol *kcontrol, int connect) |
2b97eabc RP |
1151 | { |
1152 | struct snd_soc_dapm_path *path; | |
1153 | int found = 0; | |
1154 | ||
1b075e3f | 1155 | if (widget->id != snd_soc_dapm_mixer && |
ca9c1aae | 1156 | widget->id != snd_soc_dapm_mixer_named_ctl && |
1b075e3f | 1157 | widget->id != snd_soc_dapm_switch) |
2b97eabc RP |
1158 | return -ENODEV; |
1159 | ||
2b97eabc RP |
1160 | /* find dapm widget path assoc with kcontrol */ |
1161 | list_for_each_entry(path, &widget->codec->dapm_paths, list) { | |
1162 | if (path->kcontrol != kcontrol) | |
1163 | continue; | |
1164 | ||
1165 | /* found, now check type */ | |
1166 | found = 1; | |
283375ce | 1167 | path->connect = connect; |
2b97eabc RP |
1168 | break; |
1169 | } | |
1170 | ||
b91b8fa0 | 1171 | if (found) |
2b97eabc RP |
1172 | dapm_power_widgets(widget->codec, SND_SOC_DAPM_STREAM_NOP); |
1173 | ||
1174 | return 0; | |
1175 | } | |
2b97eabc RP |
1176 | |
1177 | /* show dapm widget status in sys fs */ | |
1178 | static ssize_t dapm_widget_show(struct device *dev, | |
1179 | struct device_attribute *attr, char *buf) | |
1180 | { | |
1181 | struct snd_soc_device *devdata = dev_get_drvdata(dev); | |
6627a653 | 1182 | struct snd_soc_codec *codec = devdata->card->codec; |
2b97eabc RP |
1183 | struct snd_soc_dapm_widget *w; |
1184 | int count = 0; | |
1185 | char *state = "not set"; | |
1186 | ||
1187 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
1188 | ||
1189 | /* only display widgets that burnm power */ | |
1190 | switch (w->id) { | |
1191 | case snd_soc_dapm_hp: | |
1192 | case snd_soc_dapm_mic: | |
1193 | case snd_soc_dapm_spk: | |
1194 | case snd_soc_dapm_line: | |
1195 | case snd_soc_dapm_micbias: | |
1196 | case snd_soc_dapm_dac: | |
1197 | case snd_soc_dapm_adc: | |
1198 | case snd_soc_dapm_pga: | |
1199 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1200 | case snd_soc_dapm_mixer_named_ctl: |
246d0a17 | 1201 | case snd_soc_dapm_supply: |
2b97eabc RP |
1202 | if (w->name) |
1203 | count += sprintf(buf + count, "%s: %s\n", | |
1204 | w->name, w->power ? "On":"Off"); | |
1205 | break; | |
1206 | default: | |
1207 | break; | |
1208 | } | |
1209 | } | |
1210 | ||
0be9898a MB |
1211 | switch (codec->bias_level) { |
1212 | case SND_SOC_BIAS_ON: | |
1213 | state = "On"; | |
2b97eabc | 1214 | break; |
0be9898a MB |
1215 | case SND_SOC_BIAS_PREPARE: |
1216 | state = "Prepare"; | |
2b97eabc | 1217 | break; |
0be9898a MB |
1218 | case SND_SOC_BIAS_STANDBY: |
1219 | state = "Standby"; | |
2b97eabc | 1220 | break; |
0be9898a MB |
1221 | case SND_SOC_BIAS_OFF: |
1222 | state = "Off"; | |
2b97eabc RP |
1223 | break; |
1224 | } | |
1225 | count += sprintf(buf + count, "PM State: %s\n", state); | |
1226 | ||
1227 | return count; | |
1228 | } | |
1229 | ||
1230 | static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL); | |
1231 | ||
1232 | int snd_soc_dapm_sys_add(struct device *dev) | |
1233 | { | |
12ef193d | 1234 | return device_create_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1235 | } |
1236 | ||
1237 | static void snd_soc_dapm_sys_remove(struct device *dev) | |
1238 | { | |
aef90843 | 1239 | device_remove_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1240 | } |
1241 | ||
1242 | /* free all dapm widgets and resources */ | |
d9c96cf3 | 1243 | static void dapm_free_widgets(struct snd_soc_codec *codec) |
2b97eabc RP |
1244 | { |
1245 | struct snd_soc_dapm_widget *w, *next_w; | |
1246 | struct snd_soc_dapm_path *p, *next_p; | |
1247 | ||
1248 | list_for_each_entry_safe(w, next_w, &codec->dapm_widgets, list) { | |
1249 | list_del(&w->list); | |
1250 | kfree(w); | |
1251 | } | |
1252 | ||
1253 | list_for_each_entry_safe(p, next_p, &codec->dapm_paths, list) { | |
1254 | list_del(&p->list); | |
1255 | kfree(p->long_name); | |
1256 | kfree(p); | |
1257 | } | |
1258 | } | |
1259 | ||
a5302181 | 1260 | static int snd_soc_dapm_set_pin(struct snd_soc_codec *codec, |
1649923d | 1261 | const char *pin, int status) |
a5302181 LG |
1262 | { |
1263 | struct snd_soc_dapm_widget *w; | |
1264 | ||
1265 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
1266 | if (!strcmp(w->name, pin)) { | |
c1286b86 | 1267 | pr_debug("dapm: %s: pin %s\n", codec->name, pin); |
a5302181 LG |
1268 | w->connected = status; |
1269 | return 0; | |
1270 | } | |
1271 | } | |
1272 | ||
c1286b86 | 1273 | pr_err("dapm: %s: configuring unknown pin %s\n", codec->name, pin); |
a5302181 LG |
1274 | return -EINVAL; |
1275 | } | |
1276 | ||
2b97eabc | 1277 | /** |
a5302181 | 1278 | * snd_soc_dapm_sync - scan and power dapm paths |
2b97eabc RP |
1279 | * @codec: audio codec |
1280 | * | |
1281 | * Walks all dapm audio paths and powers widgets according to their | |
1282 | * stream or path usage. | |
1283 | * | |
1284 | * Returns 0 for success. | |
1285 | */ | |
a5302181 | 1286 | int snd_soc_dapm_sync(struct snd_soc_codec *codec) |
2b97eabc | 1287 | { |
b91b8fa0 | 1288 | return dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc | 1289 | } |
a5302181 | 1290 | EXPORT_SYMBOL_GPL(snd_soc_dapm_sync); |
2b97eabc | 1291 | |
105f1c28 | 1292 | static int snd_soc_dapm_add_route(struct snd_soc_codec *codec, |
215edda3 | 1293 | const struct snd_soc_dapm_route *route) |
2b97eabc RP |
1294 | { |
1295 | struct snd_soc_dapm_path *path; | |
1296 | struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w; | |
215edda3 MB |
1297 | const char *sink = route->sink; |
1298 | const char *control = route->control; | |
1299 | const char *source = route->source; | |
2b97eabc RP |
1300 | int ret = 0; |
1301 | ||
1302 | /* find src and dest widgets */ | |
1303 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
1304 | ||
1305 | if (!wsink && !(strcmp(w->name, sink))) { | |
1306 | wsink = w; | |
1307 | continue; | |
1308 | } | |
1309 | if (!wsource && !(strcmp(w->name, source))) { | |
1310 | wsource = w; | |
1311 | } | |
1312 | } | |
1313 | ||
1314 | if (wsource == NULL || wsink == NULL) | |
1315 | return -ENODEV; | |
1316 | ||
1317 | path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL); | |
1318 | if (!path) | |
1319 | return -ENOMEM; | |
1320 | ||
1321 | path->source = wsource; | |
1322 | path->sink = wsink; | |
215edda3 | 1323 | path->connected = route->connected; |
2b97eabc RP |
1324 | INIT_LIST_HEAD(&path->list); |
1325 | INIT_LIST_HEAD(&path->list_source); | |
1326 | INIT_LIST_HEAD(&path->list_sink); | |
1327 | ||
1328 | /* check for external widgets */ | |
1329 | if (wsink->id == snd_soc_dapm_input) { | |
1330 | if (wsource->id == snd_soc_dapm_micbias || | |
1331 | wsource->id == snd_soc_dapm_mic || | |
087d53ab RC |
1332 | wsource->id == snd_soc_dapm_line || |
1333 | wsource->id == snd_soc_dapm_output) | |
2b97eabc RP |
1334 | wsink->ext = 1; |
1335 | } | |
1336 | if (wsource->id == snd_soc_dapm_output) { | |
1337 | if (wsink->id == snd_soc_dapm_spk || | |
1338 | wsink->id == snd_soc_dapm_hp || | |
1e39221e SF |
1339 | wsink->id == snd_soc_dapm_line || |
1340 | wsink->id == snd_soc_dapm_input) | |
2b97eabc RP |
1341 | wsource->ext = 1; |
1342 | } | |
1343 | ||
1344 | /* connect static paths */ | |
1345 | if (control == NULL) { | |
1346 | list_add(&path->list, &codec->dapm_paths); | |
1347 | list_add(&path->list_sink, &wsink->sources); | |
1348 | list_add(&path->list_source, &wsource->sinks); | |
1349 | path->connect = 1; | |
1350 | return 0; | |
1351 | } | |
1352 | ||
1353 | /* connect dynamic paths */ | |
1354 | switch(wsink->id) { | |
1355 | case snd_soc_dapm_adc: | |
1356 | case snd_soc_dapm_dac: | |
1357 | case snd_soc_dapm_pga: | |
1358 | case snd_soc_dapm_input: | |
1359 | case snd_soc_dapm_output: | |
1360 | case snd_soc_dapm_micbias: | |
1361 | case snd_soc_dapm_vmid: | |
1362 | case snd_soc_dapm_pre: | |
1363 | case snd_soc_dapm_post: | |
246d0a17 | 1364 | case snd_soc_dapm_supply: |
010ff262 MB |
1365 | case snd_soc_dapm_aif_in: |
1366 | case snd_soc_dapm_aif_out: | |
2b97eabc RP |
1367 | list_add(&path->list, &codec->dapm_paths); |
1368 | list_add(&path->list_sink, &wsink->sources); | |
1369 | list_add(&path->list_source, &wsource->sinks); | |
1370 | path->connect = 1; | |
1371 | return 0; | |
1372 | case snd_soc_dapm_mux: | |
74155556 | 1373 | case snd_soc_dapm_value_mux: |
2b97eabc RP |
1374 | ret = dapm_connect_mux(codec, wsource, wsink, path, control, |
1375 | &wsink->kcontrols[0]); | |
1376 | if (ret != 0) | |
1377 | goto err; | |
1378 | break; | |
1379 | case snd_soc_dapm_switch: | |
1380 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1381 | case snd_soc_dapm_mixer_named_ctl: |
2b97eabc RP |
1382 | ret = dapm_connect_mixer(codec, wsource, wsink, path, control); |
1383 | if (ret != 0) | |
1384 | goto err; | |
1385 | break; | |
1386 | case snd_soc_dapm_hp: | |
1387 | case snd_soc_dapm_mic: | |
1388 | case snd_soc_dapm_line: | |
1389 | case snd_soc_dapm_spk: | |
1390 | list_add(&path->list, &codec->dapm_paths); | |
1391 | list_add(&path->list_sink, &wsink->sources); | |
1392 | list_add(&path->list_source, &wsource->sinks); | |
1393 | path->connect = 0; | |
1394 | return 0; | |
1395 | } | |
1396 | return 0; | |
1397 | ||
1398 | err: | |
1399 | printk(KERN_WARNING "asoc: no dapm match for %s --> %s --> %s\n", source, | |
1400 | control, sink); | |
1401 | kfree(path); | |
1402 | return ret; | |
1403 | } | |
105f1c28 | 1404 | |
105f1c28 MB |
1405 | /** |
1406 | * snd_soc_dapm_add_routes - Add routes between DAPM widgets | |
1407 | * @codec: codec | |
1408 | * @route: audio routes | |
1409 | * @num: number of routes | |
1410 | * | |
1411 | * Connects 2 dapm widgets together via a named audio path. The sink is | |
1412 | * the widget receiving the audio signal, whilst the source is the sender | |
1413 | * of the audio signal. | |
1414 | * | |
1415 | * Returns 0 for success else error. On error all resources can be freed | |
1416 | * with a call to snd_soc_card_free(). | |
1417 | */ | |
1418 | int snd_soc_dapm_add_routes(struct snd_soc_codec *codec, | |
1419 | const struct snd_soc_dapm_route *route, int num) | |
1420 | { | |
1421 | int i, ret; | |
1422 | ||
1423 | for (i = 0; i < num; i++) { | |
215edda3 | 1424 | ret = snd_soc_dapm_add_route(codec, route); |
105f1c28 MB |
1425 | if (ret < 0) { |
1426 | printk(KERN_ERR "Failed to add route %s->%s\n", | |
1427 | route->source, | |
1428 | route->sink); | |
1429 | return ret; | |
1430 | } | |
1431 | route++; | |
1432 | } | |
1433 | ||
1434 | return 0; | |
1435 | } | |
1436 | EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes); | |
1437 | ||
2b97eabc RP |
1438 | /** |
1439 | * snd_soc_dapm_new_widgets - add new dapm widgets | |
1440 | * @codec: audio codec | |
1441 | * | |
1442 | * Checks the codec for any new dapm widgets and creates them if found. | |
1443 | * | |
1444 | * Returns 0 for success. | |
1445 | */ | |
1446 | int snd_soc_dapm_new_widgets(struct snd_soc_codec *codec) | |
1447 | { | |
1448 | struct snd_soc_dapm_widget *w; | |
1449 | ||
2b97eabc RP |
1450 | list_for_each_entry(w, &codec->dapm_widgets, list) |
1451 | { | |
1452 | if (w->new) | |
1453 | continue; | |
1454 | ||
1455 | switch(w->id) { | |
1456 | case snd_soc_dapm_switch: | |
1457 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1458 | case snd_soc_dapm_mixer_named_ctl: |
b75576d7 | 1459 | w->power_check = dapm_generic_check_power; |
2b97eabc RP |
1460 | dapm_new_mixer(codec, w); |
1461 | break; | |
1462 | case snd_soc_dapm_mux: | |
2e72f8e3 | 1463 | case snd_soc_dapm_value_mux: |
b75576d7 | 1464 | w->power_check = dapm_generic_check_power; |
2b97eabc RP |
1465 | dapm_new_mux(codec, w); |
1466 | break; | |
1467 | case snd_soc_dapm_adc: | |
010ff262 | 1468 | case snd_soc_dapm_aif_out: |
b75576d7 MB |
1469 | w->power_check = dapm_adc_check_power; |
1470 | break; | |
2b97eabc | 1471 | case snd_soc_dapm_dac: |
010ff262 | 1472 | case snd_soc_dapm_aif_in: |
b75576d7 MB |
1473 | w->power_check = dapm_dac_check_power; |
1474 | break; | |
2b97eabc | 1475 | case snd_soc_dapm_pga: |
b75576d7 | 1476 | w->power_check = dapm_generic_check_power; |
2b97eabc RP |
1477 | dapm_new_pga(codec, w); |
1478 | break; | |
1479 | case snd_soc_dapm_input: | |
1480 | case snd_soc_dapm_output: | |
1481 | case snd_soc_dapm_micbias: | |
1482 | case snd_soc_dapm_spk: | |
1483 | case snd_soc_dapm_hp: | |
1484 | case snd_soc_dapm_mic: | |
1485 | case snd_soc_dapm_line: | |
b75576d7 MB |
1486 | w->power_check = dapm_generic_check_power; |
1487 | break; | |
246d0a17 MB |
1488 | case snd_soc_dapm_supply: |
1489 | w->power_check = dapm_supply_check_power; | |
2b97eabc RP |
1490 | case snd_soc_dapm_vmid: |
1491 | case snd_soc_dapm_pre: | |
1492 | case snd_soc_dapm_post: | |
1493 | break; | |
1494 | } | |
1495 | w->new = 1; | |
1496 | } | |
1497 | ||
1498 | dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP); | |
2b97eabc RP |
1499 | return 0; |
1500 | } | |
1501 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets); | |
1502 | ||
1503 | /** | |
1504 | * snd_soc_dapm_get_volsw - dapm mixer get callback | |
1505 | * @kcontrol: mixer control | |
ac11a2b3 | 1506 | * @ucontrol: control element information |
2b97eabc RP |
1507 | * |
1508 | * Callback to get the value of a dapm mixer control. | |
1509 | * | |
1510 | * Returns 0 for success. | |
1511 | */ | |
1512 | int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol, | |
1513 | struct snd_ctl_elem_value *ucontrol) | |
1514 | { | |
1515 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
4eaa9819 JS |
1516 | struct soc_mixer_control *mc = |
1517 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
1518 | unsigned int reg = mc->reg; |
1519 | unsigned int shift = mc->shift; | |
1520 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1521 | int max = mc->max; |
815ecf8d JS |
1522 | unsigned int invert = mc->invert; |
1523 | unsigned int mask = (1 << fls(max)) - 1; | |
2b97eabc | 1524 | |
2b97eabc RP |
1525 | ucontrol->value.integer.value[0] = |
1526 | (snd_soc_read(widget->codec, reg) >> shift) & mask; | |
1527 | if (shift != rshift) | |
1528 | ucontrol->value.integer.value[1] = | |
1529 | (snd_soc_read(widget->codec, reg) >> rshift) & mask; | |
1530 | if (invert) { | |
1531 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1532 | max - ucontrol->value.integer.value[0]; |
2b97eabc RP |
1533 | if (shift != rshift) |
1534 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 1535 | max - ucontrol->value.integer.value[1]; |
2b97eabc RP |
1536 | } |
1537 | ||
1538 | return 0; | |
1539 | } | |
1540 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw); | |
1541 | ||
1542 | /** | |
1543 | * snd_soc_dapm_put_volsw - dapm mixer set callback | |
1544 | * @kcontrol: mixer control | |
ac11a2b3 | 1545 | * @ucontrol: control element information |
2b97eabc RP |
1546 | * |
1547 | * Callback to set the value of a dapm mixer control. | |
1548 | * | |
1549 | * Returns 0 for success. | |
1550 | */ | |
1551 | int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, | |
1552 | struct snd_ctl_elem_value *ucontrol) | |
1553 | { | |
1554 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
4eaa9819 JS |
1555 | struct soc_mixer_control *mc = |
1556 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
1557 | unsigned int reg = mc->reg; |
1558 | unsigned int shift = mc->shift; | |
1559 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1560 | int max = mc->max; |
815ecf8d JS |
1561 | unsigned int mask = (1 << fls(max)) - 1; |
1562 | unsigned int invert = mc->invert; | |
46f5822f | 1563 | unsigned int val, val2, val_mask; |
283375ce | 1564 | int connect; |
2b97eabc RP |
1565 | int ret; |
1566 | ||
1567 | val = (ucontrol->value.integer.value[0] & mask); | |
1568 | ||
1569 | if (invert) | |
a7a4ac86 | 1570 | val = max - val; |
2b97eabc RP |
1571 | val_mask = mask << shift; |
1572 | val = val << shift; | |
1573 | if (shift != rshift) { | |
1574 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1575 | if (invert) | |
a7a4ac86 | 1576 | val2 = max - val2; |
2b97eabc RP |
1577 | val_mask |= mask << rshift; |
1578 | val |= val2 << rshift; | |
1579 | } | |
1580 | ||
1581 | mutex_lock(&widget->codec->mutex); | |
1582 | widget->value = val; | |
1583 | ||
283375ce MB |
1584 | if (snd_soc_test_bits(widget->codec, reg, val_mask, val)) { |
1585 | if (val) | |
1586 | /* new connection */ | |
1587 | connect = invert ? 0:1; | |
1588 | else | |
1589 | /* old connection must be powered down */ | |
1590 | connect = invert ? 1:0; | |
1591 | ||
1592 | dapm_mixer_update_power(widget, kcontrol, connect); | |
1593 | } | |
1594 | ||
2b97eabc RP |
1595 | if (widget->event) { |
1596 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
9af6d956 LG |
1597 | ret = widget->event(widget, kcontrol, |
1598 | SND_SOC_DAPM_PRE_REG); | |
1599 | if (ret < 0) { | |
1600 | ret = 1; | |
2b97eabc | 1601 | goto out; |
9af6d956 | 1602 | } |
2b97eabc RP |
1603 | } |
1604 | ret = snd_soc_update_bits(widget->codec, reg, val_mask, val); | |
1605 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
9af6d956 LG |
1606 | ret = widget->event(widget, kcontrol, |
1607 | SND_SOC_DAPM_POST_REG); | |
2b97eabc RP |
1608 | } else |
1609 | ret = snd_soc_update_bits(widget->codec, reg, val_mask, val); | |
1610 | ||
1611 | out: | |
1612 | mutex_unlock(&widget->codec->mutex); | |
1613 | return ret; | |
1614 | } | |
1615 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw); | |
1616 | ||
1617 | /** | |
1618 | * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback | |
1619 | * @kcontrol: mixer control | |
ac11a2b3 | 1620 | * @ucontrol: control element information |
2b97eabc RP |
1621 | * |
1622 | * Callback to get the value of a dapm enumerated double mixer control. | |
1623 | * | |
1624 | * Returns 0 for success. | |
1625 | */ | |
1626 | int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol, | |
1627 | struct snd_ctl_elem_value *ucontrol) | |
1628 | { | |
1629 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1630 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
46f5822f | 1631 | unsigned int val, bitmask; |
2b97eabc | 1632 | |
f8ba0b7b | 1633 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
1634 | ; |
1635 | val = snd_soc_read(widget->codec, e->reg); | |
1636 | ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1); | |
1637 | if (e->shift_l != e->shift_r) | |
1638 | ucontrol->value.enumerated.item[1] = | |
1639 | (val >> e->shift_r) & (bitmask - 1); | |
1640 | ||
1641 | return 0; | |
1642 | } | |
1643 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double); | |
1644 | ||
1645 | /** | |
1646 | * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback | |
1647 | * @kcontrol: mixer control | |
ac11a2b3 | 1648 | * @ucontrol: control element information |
2b97eabc RP |
1649 | * |
1650 | * Callback to set the value of a dapm enumerated double mixer control. | |
1651 | * | |
1652 | * Returns 0 for success. | |
1653 | */ | |
1654 | int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, | |
1655 | struct snd_ctl_elem_value *ucontrol) | |
1656 | { | |
1657 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1658 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
3a65577d | 1659 | unsigned int val, mux, change; |
46f5822f | 1660 | unsigned int mask, bitmask; |
2b97eabc RP |
1661 | int ret = 0; |
1662 | ||
f8ba0b7b | 1663 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc | 1664 | ; |
f8ba0b7b | 1665 | if (ucontrol->value.enumerated.item[0] > e->max - 1) |
2b97eabc RP |
1666 | return -EINVAL; |
1667 | mux = ucontrol->value.enumerated.item[0]; | |
1668 | val = mux << e->shift_l; | |
1669 | mask = (bitmask - 1) << e->shift_l; | |
1670 | if (e->shift_l != e->shift_r) { | |
f8ba0b7b | 1671 | if (ucontrol->value.enumerated.item[1] > e->max - 1) |
2b97eabc RP |
1672 | return -EINVAL; |
1673 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
1674 | mask |= (bitmask - 1) << e->shift_r; | |
1675 | } | |
1676 | ||
1677 | mutex_lock(&widget->codec->mutex); | |
1678 | widget->value = val; | |
3a65577d MB |
1679 | change = snd_soc_test_bits(widget->codec, e->reg, mask, val); |
1680 | dapm_mux_update_power(widget, kcontrol, change, mux, e); | |
1642e3d4 MB |
1681 | |
1682 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
1683 | ret = widget->event(widget, | |
1684 | kcontrol, SND_SOC_DAPM_PRE_REG); | |
1685 | if (ret < 0) | |
1686 | goto out; | |
1687 | } | |
1688 | ||
1689 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1690 | ||
1691 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
1692 | ret = widget->event(widget, | |
1693 | kcontrol, SND_SOC_DAPM_POST_REG); | |
2b97eabc RP |
1694 | |
1695 | out: | |
1696 | mutex_unlock(&widget->codec->mutex); | |
1697 | return ret; | |
1698 | } | |
1699 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double); | |
1700 | ||
d2b247a8 MB |
1701 | /** |
1702 | * snd_soc_dapm_get_enum_virt - Get virtual DAPM mux | |
1703 | * @kcontrol: mixer control | |
1704 | * @ucontrol: control element information | |
1705 | * | |
1706 | * Returns 0 for success. | |
1707 | */ | |
1708 | int snd_soc_dapm_get_enum_virt(struct snd_kcontrol *kcontrol, | |
1709 | struct snd_ctl_elem_value *ucontrol) | |
1710 | { | |
1711 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1712 | ||
1713 | ucontrol->value.enumerated.item[0] = widget->value; | |
1714 | ||
1715 | return 0; | |
1716 | } | |
1717 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_virt); | |
1718 | ||
1719 | /** | |
1720 | * snd_soc_dapm_put_enum_virt - Set virtual DAPM mux | |
1721 | * @kcontrol: mixer control | |
1722 | * @ucontrol: control element information | |
1723 | * | |
1724 | * Returns 0 for success. | |
1725 | */ | |
1726 | int snd_soc_dapm_put_enum_virt(struct snd_kcontrol *kcontrol, | |
1727 | struct snd_ctl_elem_value *ucontrol) | |
1728 | { | |
1729 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1730 | struct soc_enum *e = | |
1731 | (struct soc_enum *)kcontrol->private_value; | |
1732 | int change; | |
1733 | int ret = 0; | |
1734 | ||
1735 | if (ucontrol->value.enumerated.item[0] >= e->max) | |
1736 | return -EINVAL; | |
1737 | ||
1738 | mutex_lock(&widget->codec->mutex); | |
1739 | ||
1740 | change = widget->value != ucontrol->value.enumerated.item[0]; | |
1741 | widget->value = ucontrol->value.enumerated.item[0]; | |
1742 | dapm_mux_update_power(widget, kcontrol, change, widget->value, e); | |
1743 | ||
1744 | mutex_unlock(&widget->codec->mutex); | |
1745 | return ret; | |
1746 | } | |
1747 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt); | |
1748 | ||
2e72f8e3 PU |
1749 | /** |
1750 | * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get | |
1751 | * callback | |
1752 | * @kcontrol: mixer control | |
1753 | * @ucontrol: control element information | |
1754 | * | |
1755 | * Callback to get the value of a dapm semi enumerated double mixer control. | |
1756 | * | |
1757 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
1758 | * used for handling bitfield coded enumeration for example. | |
1759 | * | |
1760 | * Returns 0 for success. | |
1761 | */ | |
1762 | int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol *kcontrol, | |
1763 | struct snd_ctl_elem_value *ucontrol) | |
1764 | { | |
1765 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
74155556 | 1766 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f | 1767 | unsigned int reg_val, val, mux; |
2e72f8e3 PU |
1768 | |
1769 | reg_val = snd_soc_read(widget->codec, e->reg); | |
1770 | val = (reg_val >> e->shift_l) & e->mask; | |
1771 | for (mux = 0; mux < e->max; mux++) { | |
1772 | if (val == e->values[mux]) | |
1773 | break; | |
1774 | } | |
1775 | ucontrol->value.enumerated.item[0] = mux; | |
1776 | if (e->shift_l != e->shift_r) { | |
1777 | val = (reg_val >> e->shift_r) & e->mask; | |
1778 | for (mux = 0; mux < e->max; mux++) { | |
1779 | if (val == e->values[mux]) | |
1780 | break; | |
1781 | } | |
1782 | ucontrol->value.enumerated.item[1] = mux; | |
1783 | } | |
1784 | ||
1785 | return 0; | |
1786 | } | |
1787 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double); | |
1788 | ||
1789 | /** | |
1790 | * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set | |
1791 | * callback | |
1792 | * @kcontrol: mixer control | |
1793 | * @ucontrol: control element information | |
1794 | * | |
1795 | * Callback to set the value of a dapm semi enumerated double mixer control. | |
1796 | * | |
1797 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
1798 | * used for handling bitfield coded enumeration for example. | |
1799 | * | |
1800 | * Returns 0 for success. | |
1801 | */ | |
1802 | int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol, | |
1803 | struct snd_ctl_elem_value *ucontrol) | |
1804 | { | |
1805 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
74155556 | 1806 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
3a65577d | 1807 | unsigned int val, mux, change; |
46f5822f | 1808 | unsigned int mask; |
2e72f8e3 PU |
1809 | int ret = 0; |
1810 | ||
1811 | if (ucontrol->value.enumerated.item[0] > e->max - 1) | |
1812 | return -EINVAL; | |
1813 | mux = ucontrol->value.enumerated.item[0]; | |
1814 | val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l; | |
1815 | mask = e->mask << e->shift_l; | |
1816 | if (e->shift_l != e->shift_r) { | |
1817 | if (ucontrol->value.enumerated.item[1] > e->max - 1) | |
1818 | return -EINVAL; | |
1819 | val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r; | |
1820 | mask |= e->mask << e->shift_r; | |
1821 | } | |
1822 | ||
1823 | mutex_lock(&widget->codec->mutex); | |
1824 | widget->value = val; | |
3a65577d MB |
1825 | change = snd_soc_test_bits(widget->codec, e->reg, mask, val); |
1826 | dapm_mux_update_power(widget, kcontrol, change, mux, e); | |
1642e3d4 MB |
1827 | |
1828 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
1829 | ret = widget->event(widget, | |
1830 | kcontrol, SND_SOC_DAPM_PRE_REG); | |
1831 | if (ret < 0) | |
1832 | goto out; | |
1833 | } | |
1834 | ||
1835 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1836 | ||
1837 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
1838 | ret = widget->event(widget, | |
1839 | kcontrol, SND_SOC_DAPM_POST_REG); | |
2e72f8e3 PU |
1840 | |
1841 | out: | |
1842 | mutex_unlock(&widget->codec->mutex); | |
1843 | return ret; | |
1844 | } | |
1845 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double); | |
1846 | ||
8b37dbd2 MB |
1847 | /** |
1848 | * snd_soc_dapm_info_pin_switch - Info for a pin switch | |
1849 | * | |
1850 | * @kcontrol: mixer control | |
1851 | * @uinfo: control element information | |
1852 | * | |
1853 | * Callback to provide information about a pin switch control. | |
1854 | */ | |
1855 | int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol, | |
1856 | struct snd_ctl_elem_info *uinfo) | |
1857 | { | |
1858 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1859 | uinfo->count = 1; | |
1860 | uinfo->value.integer.min = 0; | |
1861 | uinfo->value.integer.max = 1; | |
1862 | ||
1863 | return 0; | |
1864 | } | |
1865 | EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch); | |
1866 | ||
1867 | /** | |
1868 | * snd_soc_dapm_get_pin_switch - Get information for a pin switch | |
1869 | * | |
1870 | * @kcontrol: mixer control | |
1871 | * @ucontrol: Value | |
1872 | */ | |
1873 | int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol, | |
1874 | struct snd_ctl_elem_value *ucontrol) | |
1875 | { | |
1876 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1877 | const char *pin = (const char *)kcontrol->private_value; | |
1878 | ||
1879 | mutex_lock(&codec->mutex); | |
1880 | ||
1881 | ucontrol->value.integer.value[0] = | |
1882 | snd_soc_dapm_get_pin_status(codec, pin); | |
1883 | ||
1884 | mutex_unlock(&codec->mutex); | |
1885 | ||
1886 | return 0; | |
1887 | } | |
1888 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch); | |
1889 | ||
1890 | /** | |
1891 | * snd_soc_dapm_put_pin_switch - Set information for a pin switch | |
1892 | * | |
1893 | * @kcontrol: mixer control | |
1894 | * @ucontrol: Value | |
1895 | */ | |
1896 | int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol, | |
1897 | struct snd_ctl_elem_value *ucontrol) | |
1898 | { | |
1899 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1900 | const char *pin = (const char *)kcontrol->private_value; | |
1901 | ||
1902 | mutex_lock(&codec->mutex); | |
1903 | ||
1904 | if (ucontrol->value.integer.value[0]) | |
1905 | snd_soc_dapm_enable_pin(codec, pin); | |
1906 | else | |
1907 | snd_soc_dapm_disable_pin(codec, pin); | |
1908 | ||
1909 | snd_soc_dapm_sync(codec); | |
1910 | ||
1911 | mutex_unlock(&codec->mutex); | |
1912 | ||
1913 | return 0; | |
1914 | } | |
1915 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch); | |
1916 | ||
2b97eabc RP |
1917 | /** |
1918 | * snd_soc_dapm_new_control - create new dapm control | |
1919 | * @codec: audio codec | |
1920 | * @widget: widget template | |
1921 | * | |
1922 | * Creates a new dapm control based upon the template. | |
1923 | * | |
1924 | * Returns 0 for success else error. | |
1925 | */ | |
1926 | int snd_soc_dapm_new_control(struct snd_soc_codec *codec, | |
1927 | const struct snd_soc_dapm_widget *widget) | |
1928 | { | |
1929 | struct snd_soc_dapm_widget *w; | |
1930 | ||
1931 | if ((w = dapm_cnew_widget(widget)) == NULL) | |
1932 | return -ENOMEM; | |
1933 | ||
1934 | w->codec = codec; | |
1935 | INIT_LIST_HEAD(&w->sources); | |
1936 | INIT_LIST_HEAD(&w->sinks); | |
1937 | INIT_LIST_HEAD(&w->list); | |
1938 | list_add(&w->list, &codec->dapm_widgets); | |
1939 | ||
1940 | /* machine layer set ups unconnected pins and insertions */ | |
1941 | w->connected = 1; | |
1942 | return 0; | |
1943 | } | |
1944 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control); | |
1945 | ||
4ba1327a MB |
1946 | /** |
1947 | * snd_soc_dapm_new_controls - create new dapm controls | |
1948 | * @codec: audio codec | |
1949 | * @widget: widget array | |
1950 | * @num: number of widgets | |
1951 | * | |
1952 | * Creates new DAPM controls based upon the templates. | |
1953 | * | |
1954 | * Returns 0 for success else error. | |
1955 | */ | |
1956 | int snd_soc_dapm_new_controls(struct snd_soc_codec *codec, | |
1957 | const struct snd_soc_dapm_widget *widget, | |
1958 | int num) | |
1959 | { | |
1960 | int i, ret; | |
1961 | ||
1962 | for (i = 0; i < num; i++) { | |
1963 | ret = snd_soc_dapm_new_control(codec, widget); | |
b8b33cb5 MB |
1964 | if (ret < 0) { |
1965 | printk(KERN_ERR | |
1966 | "ASoC: Failed to create DAPM control %s: %d\n", | |
1967 | widget->name, ret); | |
4ba1327a | 1968 | return ret; |
b8b33cb5 | 1969 | } |
4ba1327a MB |
1970 | widget++; |
1971 | } | |
1972 | return 0; | |
1973 | } | |
1974 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls); | |
1975 | ||
1976 | ||
2b97eabc RP |
1977 | /** |
1978 | * snd_soc_dapm_stream_event - send a stream event to the dapm core | |
1979 | * @codec: audio codec | |
1980 | * @stream: stream name | |
1981 | * @event: stream event | |
1982 | * | |
1983 | * Sends a stream event to the dapm core. The core then makes any | |
1984 | * necessary widget power changes. | |
1985 | * | |
1986 | * Returns 0 for success else error. | |
1987 | */ | |
1988 | int snd_soc_dapm_stream_event(struct snd_soc_codec *codec, | |
1989 | char *stream, int event) | |
1990 | { | |
1991 | struct snd_soc_dapm_widget *w; | |
1992 | ||
11da21a7 SF |
1993 | if (stream == NULL) |
1994 | return 0; | |
1995 | ||
2b97eabc RP |
1996 | mutex_lock(&codec->mutex); |
1997 | list_for_each_entry(w, &codec->dapm_widgets, list) | |
1998 | { | |
1999 | if (!w->sname) | |
2000 | continue; | |
c1286b86 MB |
2001 | pr_debug("widget %s\n %s stream %s event %d\n", |
2002 | w->name, w->sname, stream, event); | |
2b97eabc RP |
2003 | if (strstr(w->sname, stream)) { |
2004 | switch(event) { | |
2005 | case SND_SOC_DAPM_STREAM_START: | |
2006 | w->active = 1; | |
2007 | break; | |
2008 | case SND_SOC_DAPM_STREAM_STOP: | |
2009 | w->active = 0; | |
2010 | break; | |
2011 | case SND_SOC_DAPM_STREAM_SUSPEND: | |
2012 | if (w->active) | |
2013 | w->suspend = 1; | |
2014 | w->active = 0; | |
2015 | break; | |
2016 | case SND_SOC_DAPM_STREAM_RESUME: | |
2017 | if (w->suspend) { | |
2018 | w->active = 1; | |
2019 | w->suspend = 0; | |
2020 | } | |
2021 | break; | |
2022 | case SND_SOC_DAPM_STREAM_PAUSE_PUSH: | |
2023 | break; | |
2024 | case SND_SOC_DAPM_STREAM_PAUSE_RELEASE: | |
2025 | break; | |
2026 | } | |
2027 | } | |
2028 | } | |
2b97eabc RP |
2029 | |
2030 | dapm_power_widgets(codec, event); | |
8e8b2d67 | 2031 | mutex_unlock(&codec->mutex); |
2b97eabc RP |
2032 | return 0; |
2033 | } | |
2034 | EXPORT_SYMBOL_GPL(snd_soc_dapm_stream_event); | |
2035 | ||
2036 | /** | |
a5302181 | 2037 | * snd_soc_dapm_enable_pin - enable pin. |
ac11a2b3 | 2038 | * @codec: SoC codec |
a5302181 | 2039 | * @pin: pin name |
2b97eabc | 2040 | * |
74b8f955 | 2041 | * Enables input/output pin and its parents or children widgets iff there is |
a5302181 LG |
2042 | * a valid audio route and active audio stream. |
2043 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2044 | * do any widget power switching. | |
2b97eabc | 2045 | */ |
1649923d | 2046 | int snd_soc_dapm_enable_pin(struct snd_soc_codec *codec, const char *pin) |
2b97eabc | 2047 | { |
a5302181 LG |
2048 | return snd_soc_dapm_set_pin(codec, pin, 1); |
2049 | } | |
2050 | EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin); | |
2b97eabc | 2051 | |
da34183e MB |
2052 | /** |
2053 | * snd_soc_dapm_force_enable_pin - force a pin to be enabled | |
2054 | * @codec: SoC codec | |
2055 | * @pin: pin name | |
2056 | * | |
2057 | * Enables input/output pin regardless of any other state. This is | |
2058 | * intended for use with microphone bias supplies used in microphone | |
2059 | * jack detection. | |
2060 | * | |
2061 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2062 | * do any widget power switching. | |
2063 | */ | |
2064 | int snd_soc_dapm_force_enable_pin(struct snd_soc_codec *codec, const char *pin) | |
2065 | { | |
2066 | struct snd_soc_dapm_widget *w; | |
2067 | ||
2068 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
2069 | if (!strcmp(w->name, pin)) { | |
2070 | pr_debug("dapm: %s: pin %s\n", codec->name, pin); | |
2071 | w->connected = 1; | |
2072 | w->force = 1; | |
2073 | return 0; | |
2074 | } | |
2075 | } | |
2076 | ||
2077 | pr_err("dapm: %s: configuring unknown pin %s\n", codec->name, pin); | |
2078 | return -EINVAL; | |
2079 | } | |
2080 | EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin); | |
2081 | ||
a5302181 LG |
2082 | /** |
2083 | * snd_soc_dapm_disable_pin - disable pin. | |
2084 | * @codec: SoC codec | |
2085 | * @pin: pin name | |
2086 | * | |
74b8f955 | 2087 | * Disables input/output pin and its parents or children widgets. |
a5302181 LG |
2088 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to |
2089 | * do any widget power switching. | |
2090 | */ | |
1649923d | 2091 | int snd_soc_dapm_disable_pin(struct snd_soc_codec *codec, const char *pin) |
a5302181 LG |
2092 | { |
2093 | return snd_soc_dapm_set_pin(codec, pin, 0); | |
2b97eabc | 2094 | } |
a5302181 | 2095 | EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin); |
2b97eabc | 2096 | |
5817b52a MB |
2097 | /** |
2098 | * snd_soc_dapm_nc_pin - permanently disable pin. | |
2099 | * @codec: SoC codec | |
2100 | * @pin: pin name | |
2101 | * | |
2102 | * Marks the specified pin as being not connected, disabling it along | |
2103 | * any parent or child widgets. At present this is identical to | |
2104 | * snd_soc_dapm_disable_pin() but in future it will be extended to do | |
2105 | * additional things such as disabling controls which only affect | |
2106 | * paths through the pin. | |
2107 | * | |
2108 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2109 | * do any widget power switching. | |
2110 | */ | |
1649923d | 2111 | int snd_soc_dapm_nc_pin(struct snd_soc_codec *codec, const char *pin) |
5817b52a MB |
2112 | { |
2113 | return snd_soc_dapm_set_pin(codec, pin, 0); | |
2114 | } | |
2115 | EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin); | |
2116 | ||
eeec12bf | 2117 | /** |
a5302181 | 2118 | * snd_soc_dapm_get_pin_status - get audio pin status |
eeec12bf | 2119 | * @codec: audio codec |
a5302181 | 2120 | * @pin: audio signal pin endpoint (or start point) |
eeec12bf | 2121 | * |
a5302181 | 2122 | * Get audio pin status - connected or disconnected. |
eeec12bf | 2123 | * |
a5302181 | 2124 | * Returns 1 for connected otherwise 0. |
eeec12bf | 2125 | */ |
1649923d | 2126 | int snd_soc_dapm_get_pin_status(struct snd_soc_codec *codec, const char *pin) |
eeec12bf GG |
2127 | { |
2128 | struct snd_soc_dapm_widget *w; | |
2129 | ||
2130 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
a5302181 | 2131 | if (!strcmp(w->name, pin)) |
eeec12bf GG |
2132 | return w->connected; |
2133 | } | |
2134 | ||
2135 | return 0; | |
2136 | } | |
a5302181 | 2137 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status); |
eeec12bf | 2138 | |
2b97eabc RP |
2139 | /** |
2140 | * snd_soc_dapm_free - free dapm resources | |
2141 | * @socdev: SoC device | |
2142 | * | |
2143 | * Free all dapm widgets and resources. | |
2144 | */ | |
2145 | void snd_soc_dapm_free(struct snd_soc_device *socdev) | |
2146 | { | |
6627a653 | 2147 | struct snd_soc_codec *codec = socdev->card->codec; |
2b97eabc RP |
2148 | |
2149 | snd_soc_dapm_sys_remove(socdev->dev); | |
2150 | dapm_free_widgets(codec); | |
2151 | } | |
2152 | EXPORT_SYMBOL_GPL(snd_soc_dapm_free); | |
2153 | ||
51737470 MB |
2154 | /* |
2155 | * snd_soc_dapm_shutdown - callback for system shutdown | |
2156 | */ | |
2157 | void snd_soc_dapm_shutdown(struct snd_soc_device *socdev) | |
2158 | { | |
2159 | struct snd_soc_codec *codec = socdev->card->codec; | |
2160 | struct snd_soc_dapm_widget *w; | |
2161 | LIST_HEAD(down_list); | |
2162 | int powerdown = 0; | |
2163 | ||
2164 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
2165 | if (w->power) { | |
2166 | dapm_seq_insert(w, &down_list, dapm_down_seq); | |
c2caa4da | 2167 | w->power = 0; |
51737470 MB |
2168 | powerdown = 1; |
2169 | } | |
2170 | } | |
2171 | ||
2172 | /* If there were no widgets to power down we're already in | |
2173 | * standby. | |
2174 | */ | |
2175 | if (powerdown) { | |
2176 | snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_PREPARE); | |
2177 | dapm_seq_run(codec, &down_list, 0, dapm_down_seq); | |
2178 | snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_STANDBY); | |
2179 | } | |
2180 | ||
2181 | snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_OFF); | |
2182 | } | |
2183 | ||
2b97eabc | 2184 | /* Module information */ |
d331124d | 2185 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
2b97eabc RP |
2186 | MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC"); |
2187 | MODULE_LICENSE("GPL"); |