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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> |
5a0e3ad6 | 41 | #include <linux/slab.h> |
2b97eabc RP |
42 | #include <sound/core.h> |
43 | #include <sound/pcm.h> | |
44 | #include <sound/pcm_params.h> | |
45 | #include <sound/soc-dapm.h> | |
46 | #include <sound/initval.h> | |
47 | ||
2b97eabc RP |
48 | /* dapm power sequences - make this per codec in the future */ |
49 | static int dapm_up_seq[] = { | |
38357ab2 MB |
50 | [snd_soc_dapm_pre] = 0, |
51 | [snd_soc_dapm_supply] = 1, | |
52 | [snd_soc_dapm_micbias] = 2, | |
010ff262 MB |
53 | [snd_soc_dapm_aif_in] = 3, |
54 | [snd_soc_dapm_aif_out] = 3, | |
55 | [snd_soc_dapm_mic] = 4, | |
56 | [snd_soc_dapm_mux] = 5, | |
57 | [snd_soc_dapm_value_mux] = 5, | |
58 | [snd_soc_dapm_dac] = 6, | |
59 | [snd_soc_dapm_mixer] = 7, | |
60 | [snd_soc_dapm_mixer_named_ctl] = 7, | |
61 | [snd_soc_dapm_pga] = 8, | |
62 | [snd_soc_dapm_adc] = 9, | |
63 | [snd_soc_dapm_hp] = 10, | |
64 | [snd_soc_dapm_spk] = 10, | |
65 | [snd_soc_dapm_post] = 11, | |
2b97eabc | 66 | }; |
ca9c1aae | 67 | |
2b97eabc | 68 | static int dapm_down_seq[] = { |
38357ab2 MB |
69 | [snd_soc_dapm_pre] = 0, |
70 | [snd_soc_dapm_adc] = 1, | |
71 | [snd_soc_dapm_hp] = 2, | |
1ca04065 | 72 | [snd_soc_dapm_spk] = 2, |
38357ab2 MB |
73 | [snd_soc_dapm_pga] = 4, |
74 | [snd_soc_dapm_mixer_named_ctl] = 5, | |
e3d4dabd MB |
75 | [snd_soc_dapm_mixer] = 5, |
76 | [snd_soc_dapm_dac] = 6, | |
77 | [snd_soc_dapm_mic] = 7, | |
78 | [snd_soc_dapm_micbias] = 8, | |
79 | [snd_soc_dapm_mux] = 9, | |
80 | [snd_soc_dapm_value_mux] = 9, | |
010ff262 MB |
81 | [snd_soc_dapm_aif_in] = 10, |
82 | [snd_soc_dapm_aif_out] = 10, | |
83 | [snd_soc_dapm_supply] = 11, | |
84 | [snd_soc_dapm_post] = 12, | |
2b97eabc RP |
85 | }; |
86 | ||
12ef193d | 87 | static void pop_wait(u32 pop_time) |
15e4c72f MB |
88 | { |
89 | if (pop_time) | |
90 | schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time)); | |
91 | } | |
92 | ||
12ef193d | 93 | static void pop_dbg(u32 pop_time, const char *fmt, ...) |
15e4c72f MB |
94 | { |
95 | va_list args; | |
96 | ||
97 | va_start(args, fmt); | |
98 | ||
99 | if (pop_time) { | |
100 | vprintk(fmt, args); | |
15e4c72f MB |
101 | } |
102 | ||
103 | va_end(args); | |
104 | } | |
105 | ||
2b97eabc | 106 | /* create a new dapm widget */ |
88cb4290 | 107 | static inline struct snd_soc_dapm_widget *dapm_cnew_widget( |
2b97eabc RP |
108 | const struct snd_soc_dapm_widget *_widget) |
109 | { | |
88cb4290 | 110 | return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL); |
2b97eabc RP |
111 | } |
112 | ||
452c5eaa MB |
113 | /** |
114 | * snd_soc_dapm_set_bias_level - set the bias level for the system | |
115 | * @socdev: audio device | |
116 | * @level: level to configure | |
117 | * | |
118 | * Configure the bias (power) levels for the SoC audio device. | |
119 | * | |
120 | * Returns 0 for success else error. | |
121 | */ | |
122 | static int snd_soc_dapm_set_bias_level(struct snd_soc_device *socdev, | |
123 | enum snd_soc_bias_level level) | |
124 | { | |
125 | struct snd_soc_card *card = socdev->card; | |
126 | struct snd_soc_codec *codec = socdev->card->codec; | |
127 | int ret = 0; | |
128 | ||
f83fba8b MB |
129 | switch (level) { |
130 | case SND_SOC_BIAS_ON: | |
131 | dev_dbg(socdev->dev, "Setting full bias\n"); | |
132 | break; | |
133 | case SND_SOC_BIAS_PREPARE: | |
134 | dev_dbg(socdev->dev, "Setting bias prepare\n"); | |
135 | break; | |
136 | case SND_SOC_BIAS_STANDBY: | |
137 | dev_dbg(socdev->dev, "Setting standby bias\n"); | |
138 | break; | |
139 | case SND_SOC_BIAS_OFF: | |
140 | dev_dbg(socdev->dev, "Setting bias off\n"); | |
141 | break; | |
142 | default: | |
143 | dev_err(socdev->dev, "Setting invalid bias %d\n", level); | |
144 | return -EINVAL; | |
145 | } | |
146 | ||
452c5eaa MB |
147 | if (card->set_bias_level) |
148 | ret = card->set_bias_level(card, level); | |
474e09ca MB |
149 | if (ret == 0) { |
150 | if (codec->set_bias_level) | |
151 | ret = codec->set_bias_level(codec, level); | |
152 | else | |
153 | codec->bias_level = level; | |
154 | } | |
452c5eaa MB |
155 | |
156 | return ret; | |
157 | } | |
158 | ||
2b97eabc RP |
159 | /* set up initial codec paths */ |
160 | static void dapm_set_path_status(struct snd_soc_dapm_widget *w, | |
161 | struct snd_soc_dapm_path *p, int i) | |
162 | { | |
163 | switch (w->id) { | |
164 | case snd_soc_dapm_switch: | |
ca9c1aae IM |
165 | case snd_soc_dapm_mixer: |
166 | case snd_soc_dapm_mixer_named_ctl: { | |
2b97eabc | 167 | int val; |
4eaa9819 JS |
168 | struct soc_mixer_control *mc = (struct soc_mixer_control *) |
169 | w->kcontrols[i].private_value; | |
815ecf8d JS |
170 | unsigned int reg = mc->reg; |
171 | unsigned int shift = mc->shift; | |
4eaa9819 | 172 | int max = mc->max; |
815ecf8d JS |
173 | unsigned int mask = (1 << fls(max)) - 1; |
174 | unsigned int invert = mc->invert; | |
2b97eabc RP |
175 | |
176 | val = snd_soc_read(w->codec, reg); | |
177 | val = (val >> shift) & mask; | |
178 | ||
179 | if ((invert && !val) || (!invert && val)) | |
180 | p->connect = 1; | |
181 | else | |
182 | p->connect = 0; | |
183 | } | |
184 | break; | |
185 | case snd_soc_dapm_mux: { | |
186 | struct soc_enum *e = (struct soc_enum *)w->kcontrols[i].private_value; | |
187 | int val, item, bitmask; | |
188 | ||
f8ba0b7b | 189 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
190 | ; |
191 | val = snd_soc_read(w->codec, e->reg); | |
192 | item = (val >> e->shift_l) & (bitmask - 1); | |
193 | ||
194 | p->connect = 0; | |
f8ba0b7b | 195 | for (i = 0; i < e->max; i++) { |
2b97eabc RP |
196 | if (!(strcmp(p->name, e->texts[i])) && item == i) |
197 | p->connect = 1; | |
198 | } | |
199 | } | |
200 | break; | |
2e72f8e3 | 201 | case snd_soc_dapm_value_mux: { |
74155556 | 202 | struct soc_enum *e = (struct soc_enum *) |
2e72f8e3 PU |
203 | w->kcontrols[i].private_value; |
204 | int val, item; | |
205 | ||
206 | val = snd_soc_read(w->codec, e->reg); | |
207 | val = (val >> e->shift_l) & e->mask; | |
208 | for (item = 0; item < e->max; item++) { | |
209 | if (val == e->values[item]) | |
210 | break; | |
211 | } | |
212 | ||
213 | p->connect = 0; | |
214 | for (i = 0; i < e->max; i++) { | |
215 | if (!(strcmp(p->name, e->texts[i])) && item == i) | |
216 | p->connect = 1; | |
217 | } | |
218 | } | |
219 | break; | |
2b97eabc RP |
220 | /* does not effect routing - always connected */ |
221 | case snd_soc_dapm_pga: | |
222 | case snd_soc_dapm_output: | |
223 | case snd_soc_dapm_adc: | |
224 | case snd_soc_dapm_input: | |
225 | case snd_soc_dapm_dac: | |
226 | case snd_soc_dapm_micbias: | |
227 | case snd_soc_dapm_vmid: | |
246d0a17 | 228 | case snd_soc_dapm_supply: |
010ff262 MB |
229 | case snd_soc_dapm_aif_in: |
230 | case snd_soc_dapm_aif_out: | |
2b97eabc RP |
231 | p->connect = 1; |
232 | break; | |
233 | /* does effect routing - dynamically connected */ | |
234 | case snd_soc_dapm_hp: | |
235 | case snd_soc_dapm_mic: | |
236 | case snd_soc_dapm_spk: | |
237 | case snd_soc_dapm_line: | |
238 | case snd_soc_dapm_pre: | |
239 | case snd_soc_dapm_post: | |
240 | p->connect = 0; | |
241 | break; | |
242 | } | |
243 | } | |
244 | ||
74b8f955 | 245 | /* connect mux widget to its interconnecting audio paths */ |
2b97eabc RP |
246 | static int dapm_connect_mux(struct snd_soc_codec *codec, |
247 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, | |
248 | struct snd_soc_dapm_path *path, const char *control_name, | |
249 | const struct snd_kcontrol_new *kcontrol) | |
250 | { | |
251 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
252 | int i; | |
253 | ||
f8ba0b7b | 254 | for (i = 0; i < e->max; i++) { |
2b97eabc RP |
255 | if (!(strcmp(control_name, e->texts[i]))) { |
256 | list_add(&path->list, &codec->dapm_paths); | |
257 | list_add(&path->list_sink, &dest->sources); | |
258 | list_add(&path->list_source, &src->sinks); | |
259 | path->name = (char*)e->texts[i]; | |
260 | dapm_set_path_status(dest, path, 0); | |
261 | return 0; | |
262 | } | |
263 | } | |
264 | ||
265 | return -ENODEV; | |
266 | } | |
267 | ||
74b8f955 | 268 | /* connect mixer widget to its interconnecting audio paths */ |
2b97eabc RP |
269 | static int dapm_connect_mixer(struct snd_soc_codec *codec, |
270 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, | |
271 | struct snd_soc_dapm_path *path, const char *control_name) | |
272 | { | |
273 | int i; | |
274 | ||
275 | /* search for mixer kcontrol */ | |
276 | for (i = 0; i < dest->num_kcontrols; i++) { | |
277 | if (!strcmp(control_name, dest->kcontrols[i].name)) { | |
278 | list_add(&path->list, &codec->dapm_paths); | |
279 | list_add(&path->list_sink, &dest->sources); | |
280 | list_add(&path->list_source, &src->sinks); | |
281 | path->name = dest->kcontrols[i].name; | |
282 | dapm_set_path_status(dest, path, i); | |
283 | return 0; | |
284 | } | |
285 | } | |
286 | return -ENODEV; | |
287 | } | |
288 | ||
289 | /* update dapm codec register bits */ | |
290 | static int dapm_update_bits(struct snd_soc_dapm_widget *widget) | |
291 | { | |
292 | int change, power; | |
46f5822f | 293 | unsigned int old, new; |
2b97eabc RP |
294 | struct snd_soc_codec *codec = widget->codec; |
295 | ||
296 | /* check for valid widgets */ | |
297 | if (widget->reg < 0 || widget->id == snd_soc_dapm_input || | |
298 | widget->id == snd_soc_dapm_output || | |
299 | widget->id == snd_soc_dapm_hp || | |
300 | widget->id == snd_soc_dapm_mic || | |
301 | widget->id == snd_soc_dapm_line || | |
302 | widget->id == snd_soc_dapm_spk) | |
303 | return 0; | |
304 | ||
305 | power = widget->power; | |
306 | if (widget->invert) | |
307 | power = (power ? 0:1); | |
308 | ||
309 | old = snd_soc_read(codec, widget->reg); | |
310 | new = (old & ~(0x1 << widget->shift)) | (power << widget->shift); | |
311 | ||
312 | change = old != new; | |
313 | if (change) { | |
12ef193d TK |
314 | pop_dbg(codec->pop_time, "pop test %s : %s in %d ms\n", |
315 | widget->name, widget->power ? "on" : "off", | |
316 | codec->pop_time); | |
12ef193d | 317 | pop_wait(codec->pop_time); |
69224719 | 318 | snd_soc_write(codec, widget->reg, new); |
2b97eabc | 319 | } |
c1286b86 MB |
320 | pr_debug("reg %x old %x new %x change %d\n", widget->reg, |
321 | old, new, change); | |
2b97eabc RP |
322 | return change; |
323 | } | |
324 | ||
2b97eabc RP |
325 | /* create new dapm mixer control */ |
326 | static int dapm_new_mixer(struct snd_soc_codec *codec, | |
327 | struct snd_soc_dapm_widget *w) | |
328 | { | |
329 | int i, ret = 0; | |
219b93f5 | 330 | size_t name_len; |
2b97eabc RP |
331 | struct snd_soc_dapm_path *path; |
332 | ||
333 | /* add kcontrol */ | |
334 | for (i = 0; i < w->num_kcontrols; i++) { | |
335 | ||
336 | /* match name */ | |
337 | list_for_each_entry(path, &w->sources, list_sink) { | |
338 | ||
339 | /* mixer/mux paths name must match control name */ | |
340 | if (path->name != (char*)w->kcontrols[i].name) | |
341 | continue; | |
342 | ||
ca9c1aae IM |
343 | /* add dapm control with long name. |
344 | * for dapm_mixer this is the concatenation of the | |
345 | * mixer and kcontrol name. | |
346 | * for dapm_mixer_named_ctl this is simply the | |
347 | * kcontrol name. | |
348 | */ | |
349 | name_len = strlen(w->kcontrols[i].name) + 1; | |
07495f3e | 350 | if (w->id != snd_soc_dapm_mixer_named_ctl) |
ca9c1aae IM |
351 | name_len += 1 + strlen(w->name); |
352 | ||
219b93f5 | 353 | path->long_name = kmalloc(name_len, GFP_KERNEL); |
ca9c1aae | 354 | |
2b97eabc RP |
355 | if (path->long_name == NULL) |
356 | return -ENOMEM; | |
357 | ||
ca9c1aae | 358 | switch (w->id) { |
ca9c1aae IM |
359 | default: |
360 | snprintf(path->long_name, name_len, "%s %s", | |
361 | w->name, w->kcontrols[i].name); | |
07495f3e | 362 | break; |
ca9c1aae IM |
363 | case snd_soc_dapm_mixer_named_ctl: |
364 | snprintf(path->long_name, name_len, "%s", | |
365 | w->kcontrols[i].name); | |
07495f3e | 366 | break; |
ca9c1aae IM |
367 | } |
368 | ||
219b93f5 MB |
369 | path->long_name[name_len - 1] = '\0'; |
370 | ||
2b97eabc RP |
371 | path->kcontrol = snd_soc_cnew(&w->kcontrols[i], w, |
372 | path->long_name); | |
373 | ret = snd_ctl_add(codec->card, path->kcontrol); | |
374 | if (ret < 0) { | |
6553e192 MB |
375 | printk(KERN_ERR "asoc: failed to add dapm kcontrol %s: %d\n", |
376 | path->long_name, | |
377 | ret); | |
2b97eabc RP |
378 | kfree(path->long_name); |
379 | path->long_name = NULL; | |
380 | return ret; | |
381 | } | |
382 | } | |
383 | } | |
384 | return ret; | |
385 | } | |
386 | ||
387 | /* create new dapm mux control */ | |
388 | static int dapm_new_mux(struct snd_soc_codec *codec, | |
389 | struct snd_soc_dapm_widget *w) | |
390 | { | |
391 | struct snd_soc_dapm_path *path = NULL; | |
392 | struct snd_kcontrol *kcontrol; | |
393 | int ret = 0; | |
394 | ||
395 | if (!w->num_kcontrols) { | |
396 | printk(KERN_ERR "asoc: mux %s has no controls\n", w->name); | |
397 | return -EINVAL; | |
398 | } | |
399 | ||
400 | kcontrol = snd_soc_cnew(&w->kcontrols[0], w, w->name); | |
401 | ret = snd_ctl_add(codec->card, kcontrol); | |
402 | if (ret < 0) | |
403 | goto err; | |
404 | ||
405 | list_for_each_entry(path, &w->sources, list_sink) | |
406 | path->kcontrol = kcontrol; | |
407 | ||
408 | return ret; | |
409 | ||
410 | err: | |
411 | printk(KERN_ERR "asoc: failed to add kcontrol %s\n", w->name); | |
412 | return ret; | |
413 | } | |
414 | ||
415 | /* create new dapm volume control */ | |
416 | static int dapm_new_pga(struct snd_soc_codec *codec, | |
417 | struct snd_soc_dapm_widget *w) | |
418 | { | |
a6c65736 MB |
419 | if (w->num_kcontrols) |
420 | pr_err("asoc: PGA controls not supported: '%s'\n", w->name); | |
2b97eabc | 421 | |
a6c65736 | 422 | return 0; |
2b97eabc RP |
423 | } |
424 | ||
425 | /* reset 'walked' bit for each dapm path */ | |
426 | static inline void dapm_clear_walk(struct snd_soc_codec *codec) | |
427 | { | |
428 | struct snd_soc_dapm_path *p; | |
429 | ||
430 | list_for_each_entry(p, &codec->dapm_paths, list) | |
431 | p->walked = 0; | |
432 | } | |
433 | ||
9949788b MB |
434 | /* We implement power down on suspend by checking the power state of |
435 | * the ALSA card - when we are suspending the ALSA state for the card | |
436 | * is set to D3. | |
437 | */ | |
438 | static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget) | |
439 | { | |
440 | struct snd_soc_codec *codec = widget->codec; | |
441 | ||
442 | switch (snd_power_get_state(codec->card)) { | |
443 | case SNDRV_CTL_POWER_D3hot: | |
444 | case SNDRV_CTL_POWER_D3cold: | |
1547aba9 MB |
445 | if (widget->ignore_suspend) |
446 | pr_debug("%s ignoring suspend\n", widget->name); | |
447 | return widget->ignore_suspend; | |
9949788b MB |
448 | default: |
449 | return 1; | |
450 | } | |
451 | } | |
452 | ||
2b97eabc RP |
453 | /* |
454 | * Recursively check for a completed path to an active or physically connected | |
455 | * output widget. Returns number of complete paths. | |
456 | */ | |
457 | static int is_connected_output_ep(struct snd_soc_dapm_widget *widget) | |
458 | { | |
459 | struct snd_soc_dapm_path *path; | |
460 | int con = 0; | |
461 | ||
246d0a17 MB |
462 | if (widget->id == snd_soc_dapm_supply) |
463 | return 0; | |
464 | ||
010ff262 MB |
465 | switch (widget->id) { |
466 | case snd_soc_dapm_adc: | |
467 | case snd_soc_dapm_aif_out: | |
468 | if (widget->active) | |
9949788b | 469 | return snd_soc_dapm_suspend_check(widget); |
010ff262 MB |
470 | default: |
471 | break; | |
472 | } | |
2b97eabc RP |
473 | |
474 | if (widget->connected) { | |
475 | /* connected pin ? */ | |
476 | if (widget->id == snd_soc_dapm_output && !widget->ext) | |
9949788b | 477 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
478 | |
479 | /* connected jack or spk ? */ | |
480 | if (widget->id == snd_soc_dapm_hp || widget->id == snd_soc_dapm_spk || | |
eaeae5d9 | 481 | (widget->id == snd_soc_dapm_line && !list_empty(&widget->sources))) |
9949788b | 482 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
483 | } |
484 | ||
485 | list_for_each_entry(path, &widget->sinks, list_source) { | |
486 | if (path->walked) | |
487 | continue; | |
488 | ||
489 | if (path->sink && path->connect) { | |
490 | path->walked = 1; | |
491 | con += is_connected_output_ep(path->sink); | |
492 | } | |
493 | } | |
494 | ||
495 | return con; | |
496 | } | |
497 | ||
498 | /* | |
499 | * Recursively check for a completed path to an active or physically connected | |
500 | * input widget. Returns number of complete paths. | |
501 | */ | |
502 | static int is_connected_input_ep(struct snd_soc_dapm_widget *widget) | |
503 | { | |
504 | struct snd_soc_dapm_path *path; | |
505 | int con = 0; | |
506 | ||
246d0a17 MB |
507 | if (widget->id == snd_soc_dapm_supply) |
508 | return 0; | |
509 | ||
2b97eabc | 510 | /* active stream ? */ |
010ff262 MB |
511 | switch (widget->id) { |
512 | case snd_soc_dapm_dac: | |
513 | case snd_soc_dapm_aif_in: | |
514 | if (widget->active) | |
9949788b | 515 | return snd_soc_dapm_suspend_check(widget); |
010ff262 MB |
516 | default: |
517 | break; | |
518 | } | |
2b97eabc RP |
519 | |
520 | if (widget->connected) { | |
521 | /* connected pin ? */ | |
522 | if (widget->id == snd_soc_dapm_input && !widget->ext) | |
9949788b | 523 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
524 | |
525 | /* connected VMID/Bias for lower pops */ | |
526 | if (widget->id == snd_soc_dapm_vmid) | |
9949788b | 527 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
528 | |
529 | /* connected jack ? */ | |
eaeae5d9 PU |
530 | if (widget->id == snd_soc_dapm_mic || |
531 | (widget->id == snd_soc_dapm_line && !list_empty(&widget->sinks))) | |
9949788b | 532 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
533 | } |
534 | ||
535 | list_for_each_entry(path, &widget->sources, list_sink) { | |
536 | if (path->walked) | |
537 | continue; | |
538 | ||
539 | if (path->source && path->connect) { | |
540 | path->walked = 1; | |
541 | con += is_connected_input_ep(path->source); | |
542 | } | |
543 | } | |
544 | ||
545 | return con; | |
546 | } | |
547 | ||
e2be2ccf JN |
548 | /* |
549 | * Handler for generic register modifier widget. | |
550 | */ | |
551 | int dapm_reg_event(struct snd_soc_dapm_widget *w, | |
552 | struct snd_kcontrol *kcontrol, int event) | |
553 | { | |
554 | unsigned int val; | |
555 | ||
556 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
557 | val = w->on_val; | |
558 | else | |
559 | val = w->off_val; | |
560 | ||
561 | snd_soc_update_bits(w->codec, -(w->reg + 1), | |
562 | w->mask << w->shift, val << w->shift); | |
563 | ||
564 | return 0; | |
565 | } | |
11589418 | 566 | EXPORT_SYMBOL_GPL(dapm_reg_event); |
e2be2ccf | 567 | |
025756ec MB |
568 | /* Standard power change method, used to apply power changes to most |
569 | * widgets. | |
570 | */ | |
571 | static int dapm_generic_apply_power(struct snd_soc_dapm_widget *w) | |
572 | { | |
573 | int ret; | |
574 | ||
575 | /* call any power change event handlers */ | |
576 | if (w->event) | |
577 | pr_debug("power %s event for %s flags %x\n", | |
578 | w->power ? "on" : "off", | |
579 | w->name, w->event_flags); | |
580 | ||
581 | /* power up pre event */ | |
582 | if (w->power && w->event && | |
583 | (w->event_flags & SND_SOC_DAPM_PRE_PMU)) { | |
584 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMU); | |
585 | if (ret < 0) | |
586 | return ret; | |
587 | } | |
588 | ||
589 | /* power down pre event */ | |
590 | if (!w->power && w->event && | |
591 | (w->event_flags & SND_SOC_DAPM_PRE_PMD)) { | |
592 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMD); | |
593 | if (ret < 0) | |
594 | return ret; | |
595 | } | |
596 | ||
025756ec MB |
597 | dapm_update_bits(w); |
598 | ||
025756ec MB |
599 | /* power up post event */ |
600 | if (w->power && w->event && | |
601 | (w->event_flags & SND_SOC_DAPM_POST_PMU)) { | |
602 | ret = w->event(w, | |
603 | NULL, SND_SOC_DAPM_POST_PMU); | |
604 | if (ret < 0) | |
605 | return ret; | |
606 | } | |
607 | ||
608 | /* power down post event */ | |
609 | if (!w->power && w->event && | |
610 | (w->event_flags & SND_SOC_DAPM_POST_PMD)) { | |
611 | ret = w->event(w, NULL, SND_SOC_DAPM_POST_PMD); | |
612 | if (ret < 0) | |
613 | return ret; | |
614 | } | |
615 | ||
616 | return 0; | |
617 | } | |
618 | ||
cd0f2d47 MB |
619 | /* Generic check to see if a widget should be powered. |
620 | */ | |
621 | static int dapm_generic_check_power(struct snd_soc_dapm_widget *w) | |
622 | { | |
623 | int in, out; | |
624 | ||
625 | in = is_connected_input_ep(w); | |
626 | dapm_clear_walk(w->codec); | |
627 | out = is_connected_output_ep(w); | |
628 | dapm_clear_walk(w->codec); | |
629 | return out != 0 && in != 0; | |
630 | } | |
631 | ||
6ea31b9f MB |
632 | /* Check to see if an ADC has power */ |
633 | static int dapm_adc_check_power(struct snd_soc_dapm_widget *w) | |
634 | { | |
635 | int in; | |
636 | ||
637 | if (w->active) { | |
638 | in = is_connected_input_ep(w); | |
639 | dapm_clear_walk(w->codec); | |
640 | return in != 0; | |
641 | } else { | |
642 | return dapm_generic_check_power(w); | |
643 | } | |
644 | } | |
645 | ||
646 | /* Check to see if a DAC has power */ | |
647 | static int dapm_dac_check_power(struct snd_soc_dapm_widget *w) | |
648 | { | |
649 | int out; | |
650 | ||
651 | if (w->active) { | |
652 | out = is_connected_output_ep(w); | |
653 | dapm_clear_walk(w->codec); | |
654 | return out != 0; | |
655 | } else { | |
656 | return dapm_generic_check_power(w); | |
657 | } | |
658 | } | |
659 | ||
246d0a17 MB |
660 | /* Check to see if a power supply is needed */ |
661 | static int dapm_supply_check_power(struct snd_soc_dapm_widget *w) | |
662 | { | |
663 | struct snd_soc_dapm_path *path; | |
664 | int power = 0; | |
665 | ||
666 | /* Check if one of our outputs is connected */ | |
667 | list_for_each_entry(path, &w->sinks, list_source) { | |
215edda3 MB |
668 | if (path->connected && |
669 | !path->connected(path->source, path->sink)) | |
670 | continue; | |
671 | ||
246d0a17 MB |
672 | if (path->sink && path->sink->power_check && |
673 | path->sink->power_check(path->sink)) { | |
674 | power = 1; | |
675 | break; | |
676 | } | |
677 | } | |
678 | ||
679 | dapm_clear_walk(w->codec); | |
680 | ||
681 | return power; | |
682 | } | |
683 | ||
38357ab2 MB |
684 | static int dapm_seq_compare(struct snd_soc_dapm_widget *a, |
685 | struct snd_soc_dapm_widget *b, | |
686 | int sort[]) | |
42aa3418 | 687 | { |
d207c68d MB |
688 | if (a->codec != b->codec) |
689 | return (unsigned long)a - (unsigned long)b; | |
38357ab2 MB |
690 | if (sort[a->id] != sort[b->id]) |
691 | return sort[a->id] - sort[b->id]; | |
b22ead2a MB |
692 | if (a->reg != b->reg) |
693 | return a->reg - b->reg; | |
42aa3418 | 694 | |
38357ab2 MB |
695 | return 0; |
696 | } | |
42aa3418 | 697 | |
38357ab2 MB |
698 | /* Insert a widget in order into a DAPM power sequence. */ |
699 | static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget, | |
700 | struct list_head *list, | |
701 | int sort[]) | |
702 | { | |
703 | struct snd_soc_dapm_widget *w; | |
704 | ||
705 | list_for_each_entry(w, list, power_list) | |
706 | if (dapm_seq_compare(new_widget, w, sort) < 0) { | |
707 | list_add_tail(&new_widget->power_list, &w->power_list); | |
708 | return; | |
709 | } | |
710 | ||
711 | list_add_tail(&new_widget->power_list, list); | |
712 | } | |
713 | ||
b22ead2a MB |
714 | /* Apply the coalesced changes from a DAPM sequence */ |
715 | static void dapm_seq_run_coalesced(struct snd_soc_codec *codec, | |
716 | struct list_head *pending) | |
163cac06 MB |
717 | { |
718 | struct snd_soc_dapm_widget *w; | |
81628103 | 719 | int reg, power, ret; |
b22ead2a MB |
720 | unsigned int value = 0; |
721 | unsigned int mask = 0; | |
722 | unsigned int cur_mask; | |
723 | ||
724 | reg = list_first_entry(pending, struct snd_soc_dapm_widget, | |
725 | power_list)->reg; | |
726 | ||
727 | list_for_each_entry(w, pending, power_list) { | |
728 | cur_mask = 1 << w->shift; | |
729 | BUG_ON(reg != w->reg); | |
730 | ||
731 | if (w->invert) | |
732 | power = !w->power; | |
733 | else | |
734 | power = w->power; | |
735 | ||
736 | mask |= cur_mask; | |
737 | if (power) | |
738 | value |= cur_mask; | |
739 | ||
740 | pop_dbg(codec->pop_time, | |
741 | "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n", | |
742 | w->name, reg, value, mask); | |
81628103 MB |
743 | |
744 | /* power up pre event */ | |
745 | if (w->power && w->event && | |
746 | (w->event_flags & SND_SOC_DAPM_PRE_PMU)) { | |
747 | pop_dbg(codec->pop_time, "pop test : %s PRE_PMU\n", | |
748 | w->name); | |
749 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMU); | |
42aa3418 | 750 | if (ret < 0) |
81628103 MB |
751 | pr_err("%s: pre event failed: %d\n", |
752 | w->name, ret); | |
753 | } | |
754 | ||
755 | /* power down pre event */ | |
756 | if (!w->power && w->event && | |
757 | (w->event_flags & SND_SOC_DAPM_PRE_PMD)) { | |
758 | pop_dbg(codec->pop_time, "pop test : %s PRE_PMD\n", | |
759 | w->name); | |
760 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMD); | |
42aa3418 | 761 | if (ret < 0) |
81628103 MB |
762 | pr_err("%s: pre event failed: %d\n", |
763 | w->name, ret); | |
42aa3418 | 764 | } |
81628103 MB |
765 | } |
766 | ||
767 | if (reg >= 0) { | |
768 | pop_dbg(codec->pop_time, | |
769 | "pop test : Applying 0x%x/0x%x to %x in %dms\n", | |
770 | value, mask, reg, codec->pop_time); | |
771 | pop_wait(codec->pop_time); | |
772 | snd_soc_update_bits(codec, reg, mask, value); | |
b22ead2a MB |
773 | } |
774 | ||
81628103 MB |
775 | list_for_each_entry(w, pending, power_list) { |
776 | /* power up post event */ | |
777 | if (w->power && w->event && | |
778 | (w->event_flags & SND_SOC_DAPM_POST_PMU)) { | |
779 | pop_dbg(codec->pop_time, "pop test : %s POST_PMU\n", | |
780 | w->name); | |
42aa3418 MB |
781 | ret = w->event(w, |
782 | NULL, SND_SOC_DAPM_POST_PMU); | |
783 | if (ret < 0) | |
81628103 MB |
784 | pr_err("%s: post event failed: %d\n", |
785 | w->name, ret); | |
786 | } | |
787 | ||
788 | /* power down post event */ | |
789 | if (!w->power && w->event && | |
790 | (w->event_flags & SND_SOC_DAPM_POST_PMD)) { | |
791 | pop_dbg(codec->pop_time, "pop test : %s POST_PMD\n", | |
792 | w->name); | |
793 | ret = w->event(w, NULL, SND_SOC_DAPM_POST_PMD); | |
42aa3418 | 794 | if (ret < 0) |
81628103 MB |
795 | pr_err("%s: post event failed: %d\n", |
796 | w->name, ret); | |
42aa3418 | 797 | } |
81628103 | 798 | } |
b22ead2a | 799 | } |
42aa3418 | 800 | |
b22ead2a MB |
801 | /* Apply a DAPM power sequence. |
802 | * | |
803 | * We walk over a pre-sorted list of widgets to apply power to. In | |
804 | * order to minimise the number of writes to the device required | |
805 | * multiple widgets will be updated in a single write where possible. | |
806 | * Currently anything that requires more than a single write is not | |
807 | * handled. | |
808 | */ | |
809 | static void dapm_seq_run(struct snd_soc_codec *codec, struct list_head *list, | |
810 | int event, int sort[]) | |
811 | { | |
812 | struct snd_soc_dapm_widget *w, *n; | |
813 | LIST_HEAD(pending); | |
814 | int cur_sort = -1; | |
815 | int cur_reg = SND_SOC_NOPM; | |
163cac06 MB |
816 | int ret; |
817 | ||
b22ead2a MB |
818 | list_for_each_entry_safe(w, n, list, power_list) { |
819 | ret = 0; | |
820 | ||
821 | /* Do we need to apply any queued changes? */ | |
822 | if (sort[w->id] != cur_sort || w->reg != cur_reg) { | |
823 | if (!list_empty(&pending)) | |
824 | dapm_seq_run_coalesced(codec, &pending); | |
825 | ||
826 | INIT_LIST_HEAD(&pending); | |
827 | cur_sort = -1; | |
828 | cur_reg = SND_SOC_NOPM; | |
829 | } | |
830 | ||
163cac06 MB |
831 | switch (w->id) { |
832 | case snd_soc_dapm_pre: | |
833 | if (!w->event) | |
b22ead2a MB |
834 | list_for_each_entry_safe_continue(w, n, list, |
835 | power_list); | |
163cac06 | 836 | |
b22ead2a | 837 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
838 | ret = w->event(w, |
839 | NULL, SND_SOC_DAPM_PRE_PMU); | |
b22ead2a | 840 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
841 | ret = w->event(w, |
842 | NULL, SND_SOC_DAPM_PRE_PMD); | |
163cac06 MB |
843 | break; |
844 | ||
845 | case snd_soc_dapm_post: | |
846 | if (!w->event) | |
b22ead2a MB |
847 | list_for_each_entry_safe_continue(w, n, list, |
848 | power_list); | |
163cac06 | 849 | |
b22ead2a | 850 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
851 | ret = w->event(w, |
852 | NULL, SND_SOC_DAPM_POST_PMU); | |
b22ead2a | 853 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
854 | ret = w->event(w, |
855 | NULL, SND_SOC_DAPM_POST_PMD); | |
163cac06 MB |
856 | break; |
857 | ||
b22ead2a MB |
858 | case snd_soc_dapm_input: |
859 | case snd_soc_dapm_output: | |
860 | case snd_soc_dapm_hp: | |
861 | case snd_soc_dapm_mic: | |
862 | case snd_soc_dapm_line: | |
863 | case snd_soc_dapm_spk: | |
864 | /* No register support currently */ | |
163cac06 | 865 | ret = dapm_generic_apply_power(w); |
163cac06 | 866 | break; |
b22ead2a MB |
867 | |
868 | default: | |
81628103 MB |
869 | /* Queue it up for application */ |
870 | cur_sort = sort[w->id]; | |
871 | cur_reg = w->reg; | |
872 | list_move(&w->power_list, &pending); | |
873 | break; | |
163cac06 | 874 | } |
b22ead2a MB |
875 | |
876 | if (ret < 0) | |
877 | pr_err("Failed to apply widget power: %d\n", | |
878 | ret); | |
6ea31b9f | 879 | } |
b22ead2a MB |
880 | |
881 | if (!list_empty(&pending)) | |
882 | dapm_seq_run_coalesced(codec, &pending); | |
42aa3418 MB |
883 | } |
884 | ||
2b97eabc RP |
885 | /* |
886 | * Scan each dapm widget for complete audio path. | |
887 | * A complete path is a route that has valid endpoints i.e.:- | |
888 | * | |
889 | * o DAC to output pin. | |
890 | * o Input Pin to ADC. | |
891 | * o Input pin to Output pin (bypass, sidetone) | |
892 | * o DAC to ADC (loopback). | |
893 | */ | |
d9c96cf3 | 894 | static int dapm_power_widgets(struct snd_soc_codec *codec, int event) |
2b97eabc | 895 | { |
452c5eaa | 896 | struct snd_soc_device *socdev = codec->socdev; |
2b97eabc | 897 | struct snd_soc_dapm_widget *w; |
291f3bbc MB |
898 | LIST_HEAD(up_list); |
899 | LIST_HEAD(down_list); | |
6d3ddc81 | 900 | int ret = 0; |
38357ab2 | 901 | int power; |
452c5eaa | 902 | int sys_power = 0; |
6d3ddc81 | 903 | |
6d3ddc81 MB |
904 | /* Check which widgets we need to power and store them in |
905 | * lists indicating if they should be powered up or down. | |
906 | */ | |
907 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
908 | switch (w->id) { | |
909 | case snd_soc_dapm_pre: | |
291f3bbc | 910 | dapm_seq_insert(w, &down_list, dapm_down_seq); |
6d3ddc81 MB |
911 | break; |
912 | case snd_soc_dapm_post: | |
291f3bbc | 913 | dapm_seq_insert(w, &up_list, dapm_up_seq); |
6d3ddc81 MB |
914 | break; |
915 | ||
916 | default: | |
917 | if (!w->power_check) | |
918 | continue; | |
919 | ||
9949788b | 920 | if (!w->force) |
50b6bce5 | 921 | power = w->power_check(w); |
9949788b MB |
922 | else |
923 | power = 1; | |
924 | if (power) | |
925 | sys_power = 1; | |
452c5eaa | 926 | |
6d3ddc81 MB |
927 | if (w->power == power) |
928 | continue; | |
929 | ||
930 | if (power) | |
291f3bbc | 931 | dapm_seq_insert(w, &up_list, dapm_up_seq); |
6d3ddc81 | 932 | else |
291f3bbc | 933 | dapm_seq_insert(w, &down_list, dapm_down_seq); |
6d3ddc81 MB |
934 | |
935 | w->power = power; | |
936 | break; | |
937 | } | |
2b97eabc RP |
938 | } |
939 | ||
b14b76a5 MB |
940 | /* If there are no DAPM widgets then try to figure out power from the |
941 | * event type. | |
942 | */ | |
943 | if (list_empty(&codec->dapm_widgets)) { | |
944 | switch (event) { | |
945 | case SND_SOC_DAPM_STREAM_START: | |
946 | case SND_SOC_DAPM_STREAM_RESUME: | |
947 | sys_power = 1; | |
948 | break; | |
50b6bce5 MB |
949 | case SND_SOC_DAPM_STREAM_SUSPEND: |
950 | sys_power = 0; | |
951 | break; | |
b14b76a5 | 952 | case SND_SOC_DAPM_STREAM_NOP: |
a96ca338 MB |
953 | switch (codec->bias_level) { |
954 | case SND_SOC_BIAS_STANDBY: | |
955 | case SND_SOC_BIAS_OFF: | |
956 | sys_power = 0; | |
957 | break; | |
958 | default: | |
959 | sys_power = 1; | |
960 | break; | |
961 | } | |
50b6bce5 | 962 | break; |
b14b76a5 MB |
963 | default: |
964 | break; | |
965 | } | |
966 | } | |
967 | ||
a96ca338 MB |
968 | if (sys_power && codec->bias_level == SND_SOC_BIAS_OFF) { |
969 | ret = snd_soc_dapm_set_bias_level(socdev, | |
970 | SND_SOC_BIAS_STANDBY); | |
971 | if (ret != 0) | |
972 | pr_err("Failed to turn on bias: %d\n", ret); | |
973 | } | |
974 | ||
452c5eaa MB |
975 | /* If we're changing to all on or all off then prepare */ |
976 | if ((sys_power && codec->bias_level == SND_SOC_BIAS_STANDBY) || | |
977 | (!sys_power && codec->bias_level == SND_SOC_BIAS_ON)) { | |
978 | ret = snd_soc_dapm_set_bias_level(socdev, | |
979 | SND_SOC_BIAS_PREPARE); | |
980 | if (ret != 0) | |
981 | pr_err("Failed to prepare bias: %d\n", ret); | |
982 | } | |
983 | ||
6d3ddc81 | 984 | /* Power down widgets first; try to avoid amplifying pops. */ |
291f3bbc | 985 | dapm_seq_run(codec, &down_list, event, dapm_down_seq); |
2b97eabc | 986 | |
6d3ddc81 | 987 | /* Now power up. */ |
291f3bbc | 988 | dapm_seq_run(codec, &up_list, event, dapm_up_seq); |
2b97eabc | 989 | |
452c5eaa MB |
990 | /* If we just powered the last thing off drop to standby bias */ |
991 | if (codec->bias_level == SND_SOC_BIAS_PREPARE && !sys_power) { | |
992 | ret = snd_soc_dapm_set_bias_level(socdev, | |
993 | SND_SOC_BIAS_STANDBY); | |
994 | if (ret != 0) | |
995 | pr_err("Failed to apply standby bias: %d\n", ret); | |
996 | } | |
997 | ||
a96ca338 MB |
998 | /* If we're in standby and can support bias off then do that */ |
999 | if (codec->bias_level == SND_SOC_BIAS_STANDBY && | |
1000 | codec->idle_bias_off) { | |
1001 | ret = snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_OFF); | |
1002 | if (ret != 0) | |
1003 | pr_err("Failed to turn off bias: %d\n", ret); | |
1004 | } | |
1005 | ||
452c5eaa MB |
1006 | /* If we just powered up then move to active bias */ |
1007 | if (codec->bias_level == SND_SOC_BIAS_PREPARE && sys_power) { | |
1008 | ret = snd_soc_dapm_set_bias_level(socdev, | |
1009 | SND_SOC_BIAS_ON); | |
1010 | if (ret != 0) | |
1011 | pr_err("Failed to apply active bias: %d\n", ret); | |
1012 | } | |
1013 | ||
cb507e7e MB |
1014 | pop_dbg(codec->pop_time, "DAPM sequencing finished, waiting %dms\n", |
1015 | codec->pop_time); | |
69224719 | 1016 | pop_wait(codec->pop_time); |
cb507e7e | 1017 | |
42aa3418 | 1018 | return 0; |
2b97eabc RP |
1019 | } |
1020 | ||
79fb9387 MB |
1021 | #ifdef CONFIG_DEBUG_FS |
1022 | static int dapm_widget_power_open_file(struct inode *inode, struct file *file) | |
1023 | { | |
1024 | file->private_data = inode->i_private; | |
1025 | return 0; | |
1026 | } | |
1027 | ||
1028 | static ssize_t dapm_widget_power_read_file(struct file *file, | |
1029 | char __user *user_buf, | |
1030 | size_t count, loff_t *ppos) | |
1031 | { | |
1032 | struct snd_soc_dapm_widget *w = file->private_data; | |
1033 | char *buf; | |
1034 | int in, out; | |
1035 | ssize_t ret; | |
1036 | struct snd_soc_dapm_path *p = NULL; | |
1037 | ||
1038 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); | |
1039 | if (!buf) | |
1040 | return -ENOMEM; | |
1041 | ||
1042 | in = is_connected_input_ep(w); | |
1043 | dapm_clear_walk(w->codec); | |
1044 | out = is_connected_output_ep(w); | |
1045 | dapm_clear_walk(w->codec); | |
1046 | ||
d033c36a | 1047 | ret = snprintf(buf, PAGE_SIZE, "%s: %s in %d out %d", |
79fb9387 MB |
1048 | w->name, w->power ? "On" : "Off", in, out); |
1049 | ||
d033c36a MB |
1050 | if (w->reg >= 0) |
1051 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
1052 | " - R%d(0x%x) bit %d", | |
1053 | w->reg, w->reg, w->shift); | |
1054 | ||
1055 | ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n"); | |
1056 | ||
3eef08ba MB |
1057 | if (w->sname) |
1058 | ret += snprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n", | |
1059 | w->sname, | |
1060 | w->active ? "active" : "inactive"); | |
79fb9387 MB |
1061 | |
1062 | list_for_each_entry(p, &w->sources, list_sink) { | |
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 | " in %s %s\n", | |
1069 | p->name ? p->name : "static", | |
1070 | p->source->name); | |
1071 | } | |
1072 | list_for_each_entry(p, &w->sinks, list_source) { | |
215edda3 MB |
1073 | if (p->connected && !p->connected(w, p->sink)) |
1074 | continue; | |
1075 | ||
79fb9387 MB |
1076 | if (p->connect) |
1077 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
1078 | " out %s %s\n", | |
1079 | p->name ? p->name : "static", | |
1080 | p->sink->name); | |
1081 | } | |
1082 | ||
1083 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); | |
1084 | ||
1085 | kfree(buf); | |
1086 | return ret; | |
1087 | } | |
1088 | ||
1089 | static const struct file_operations dapm_widget_power_fops = { | |
1090 | .open = dapm_widget_power_open_file, | |
1091 | .read = dapm_widget_power_read_file, | |
6038f373 | 1092 | .llseek = default_llseek, |
79fb9387 MB |
1093 | }; |
1094 | ||
1095 | void snd_soc_dapm_debugfs_init(struct snd_soc_codec *codec) | |
1096 | { | |
1097 | struct snd_soc_dapm_widget *w; | |
1098 | struct dentry *d; | |
1099 | ||
1100 | if (!codec->debugfs_dapm) | |
1101 | return; | |
1102 | ||
1103 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
1104 | if (!w->name) | |
1105 | continue; | |
1106 | ||
1107 | d = debugfs_create_file(w->name, 0444, | |
1108 | codec->debugfs_dapm, w, | |
1109 | &dapm_widget_power_fops); | |
1110 | if (!d) | |
1111 | printk(KERN_WARNING | |
1112 | "ASoC: Failed to create %s debugfs file\n", | |
1113 | w->name); | |
1114 | } | |
1115 | } | |
1116 | #else | |
1117 | void snd_soc_dapm_debugfs_init(struct snd_soc_codec *codec) | |
1118 | { | |
1119 | } | |
1120 | #endif | |
1121 | ||
2b97eabc | 1122 | /* test and update the power status of a mux widget */ |
d9c96cf3 | 1123 | static int dapm_mux_update_power(struct snd_soc_dapm_widget *widget, |
3a65577d MB |
1124 | struct snd_kcontrol *kcontrol, int change, |
1125 | int mux, struct soc_enum *e) | |
2b97eabc RP |
1126 | { |
1127 | struct snd_soc_dapm_path *path; | |
1128 | int found = 0; | |
1129 | ||
eff317d0 PU |
1130 | if (widget->id != snd_soc_dapm_mux && |
1131 | widget->id != snd_soc_dapm_value_mux) | |
2b97eabc RP |
1132 | return -ENODEV; |
1133 | ||
3a65577d | 1134 | if (!change) |
2b97eabc RP |
1135 | return 0; |
1136 | ||
1137 | /* find dapm widget path assoc with kcontrol */ | |
1138 | list_for_each_entry(path, &widget->codec->dapm_paths, list) { | |
1139 | if (path->kcontrol != kcontrol) | |
1140 | continue; | |
1141 | ||
cb01e2b9 | 1142 | if (!path->name || !e->texts[mux]) |
2b97eabc RP |
1143 | continue; |
1144 | ||
1145 | found = 1; | |
1146 | /* we now need to match the string in the enum to the path */ | |
cb01e2b9 | 1147 | if (!(strcmp(path->name, e->texts[mux]))) |
2b97eabc RP |
1148 | path->connect = 1; /* new connection */ |
1149 | else | |
1150 | path->connect = 0; /* old connection must be powered down */ | |
1151 | } | |
1152 | ||
b91b8fa0 | 1153 | if (found) |
2b97eabc RP |
1154 | dapm_power_widgets(widget->codec, SND_SOC_DAPM_STREAM_NOP); |
1155 | ||
1156 | return 0; | |
1157 | } | |
2b97eabc | 1158 | |
1b075e3f | 1159 | /* test and update the power status of a mixer or switch widget */ |
d9c96cf3 | 1160 | static int dapm_mixer_update_power(struct snd_soc_dapm_widget *widget, |
283375ce | 1161 | struct snd_kcontrol *kcontrol, int connect) |
2b97eabc RP |
1162 | { |
1163 | struct snd_soc_dapm_path *path; | |
1164 | int found = 0; | |
1165 | ||
1b075e3f | 1166 | if (widget->id != snd_soc_dapm_mixer && |
ca9c1aae | 1167 | widget->id != snd_soc_dapm_mixer_named_ctl && |
1b075e3f | 1168 | widget->id != snd_soc_dapm_switch) |
2b97eabc RP |
1169 | return -ENODEV; |
1170 | ||
2b97eabc RP |
1171 | /* find dapm widget path assoc with kcontrol */ |
1172 | list_for_each_entry(path, &widget->codec->dapm_paths, list) { | |
1173 | if (path->kcontrol != kcontrol) | |
1174 | continue; | |
1175 | ||
1176 | /* found, now check type */ | |
1177 | found = 1; | |
283375ce | 1178 | path->connect = connect; |
2b97eabc RP |
1179 | break; |
1180 | } | |
1181 | ||
b91b8fa0 | 1182 | if (found) |
2b97eabc RP |
1183 | dapm_power_widgets(widget->codec, SND_SOC_DAPM_STREAM_NOP); |
1184 | ||
1185 | return 0; | |
1186 | } | |
2b97eabc RP |
1187 | |
1188 | /* show dapm widget status in sys fs */ | |
1189 | static ssize_t dapm_widget_show(struct device *dev, | |
1190 | struct device_attribute *attr, char *buf) | |
1191 | { | |
1192 | struct snd_soc_device *devdata = dev_get_drvdata(dev); | |
6627a653 | 1193 | struct snd_soc_codec *codec = devdata->card->codec; |
2b97eabc RP |
1194 | struct snd_soc_dapm_widget *w; |
1195 | int count = 0; | |
1196 | char *state = "not set"; | |
1197 | ||
1198 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
1199 | ||
1200 | /* only display widgets that burnm power */ | |
1201 | switch (w->id) { | |
1202 | case snd_soc_dapm_hp: | |
1203 | case snd_soc_dapm_mic: | |
1204 | case snd_soc_dapm_spk: | |
1205 | case snd_soc_dapm_line: | |
1206 | case snd_soc_dapm_micbias: | |
1207 | case snd_soc_dapm_dac: | |
1208 | case snd_soc_dapm_adc: | |
1209 | case snd_soc_dapm_pga: | |
1210 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1211 | case snd_soc_dapm_mixer_named_ctl: |
246d0a17 | 1212 | case snd_soc_dapm_supply: |
2b97eabc RP |
1213 | if (w->name) |
1214 | count += sprintf(buf + count, "%s: %s\n", | |
1215 | w->name, w->power ? "On":"Off"); | |
1216 | break; | |
1217 | default: | |
1218 | break; | |
1219 | } | |
1220 | } | |
1221 | ||
0be9898a MB |
1222 | switch (codec->bias_level) { |
1223 | case SND_SOC_BIAS_ON: | |
1224 | state = "On"; | |
2b97eabc | 1225 | break; |
0be9898a MB |
1226 | case SND_SOC_BIAS_PREPARE: |
1227 | state = "Prepare"; | |
2b97eabc | 1228 | break; |
0be9898a MB |
1229 | case SND_SOC_BIAS_STANDBY: |
1230 | state = "Standby"; | |
2b97eabc | 1231 | break; |
0be9898a MB |
1232 | case SND_SOC_BIAS_OFF: |
1233 | state = "Off"; | |
2b97eabc RP |
1234 | break; |
1235 | } | |
1236 | count += sprintf(buf + count, "PM State: %s\n", state); | |
1237 | ||
1238 | return count; | |
1239 | } | |
1240 | ||
1241 | static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL); | |
1242 | ||
1243 | int snd_soc_dapm_sys_add(struct device *dev) | |
1244 | { | |
12ef193d | 1245 | return device_create_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1246 | } |
1247 | ||
1248 | static void snd_soc_dapm_sys_remove(struct device *dev) | |
1249 | { | |
aef90843 | 1250 | device_remove_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1251 | } |
1252 | ||
1253 | /* free all dapm widgets and resources */ | |
d9c96cf3 | 1254 | static void dapm_free_widgets(struct snd_soc_codec *codec) |
2b97eabc RP |
1255 | { |
1256 | struct snd_soc_dapm_widget *w, *next_w; | |
1257 | struct snd_soc_dapm_path *p, *next_p; | |
1258 | ||
1259 | list_for_each_entry_safe(w, next_w, &codec->dapm_widgets, list) { | |
1260 | list_del(&w->list); | |
1261 | kfree(w); | |
1262 | } | |
1263 | ||
1264 | list_for_each_entry_safe(p, next_p, &codec->dapm_paths, list) { | |
1265 | list_del(&p->list); | |
1266 | kfree(p->long_name); | |
1267 | kfree(p); | |
1268 | } | |
1269 | } | |
1270 | ||
a5302181 | 1271 | static int snd_soc_dapm_set_pin(struct snd_soc_codec *codec, |
1649923d | 1272 | const char *pin, int status) |
a5302181 LG |
1273 | { |
1274 | struct snd_soc_dapm_widget *w; | |
1275 | ||
1276 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
1277 | if (!strcmp(w->name, pin)) { | |
c1286b86 | 1278 | pr_debug("dapm: %s: pin %s\n", codec->name, pin); |
a5302181 | 1279 | w->connected = status; |
5b9e87cc MB |
1280 | /* Allow disabling of forced pins */ |
1281 | if (status == 0) | |
1282 | w->force = 0; | |
a5302181 LG |
1283 | return 0; |
1284 | } | |
1285 | } | |
1286 | ||
c1286b86 | 1287 | pr_err("dapm: %s: configuring unknown pin %s\n", codec->name, pin); |
a5302181 LG |
1288 | return -EINVAL; |
1289 | } | |
1290 | ||
2b97eabc | 1291 | /** |
a5302181 | 1292 | * snd_soc_dapm_sync - scan and power dapm paths |
2b97eabc RP |
1293 | * @codec: audio codec |
1294 | * | |
1295 | * Walks all dapm audio paths and powers widgets according to their | |
1296 | * stream or path usage. | |
1297 | * | |
1298 | * Returns 0 for success. | |
1299 | */ | |
a5302181 | 1300 | int snd_soc_dapm_sync(struct snd_soc_codec *codec) |
2b97eabc | 1301 | { |
b91b8fa0 | 1302 | return dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc | 1303 | } |
a5302181 | 1304 | EXPORT_SYMBOL_GPL(snd_soc_dapm_sync); |
2b97eabc | 1305 | |
105f1c28 | 1306 | static int snd_soc_dapm_add_route(struct snd_soc_codec *codec, |
215edda3 | 1307 | const struct snd_soc_dapm_route *route) |
2b97eabc RP |
1308 | { |
1309 | struct snd_soc_dapm_path *path; | |
1310 | struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w; | |
215edda3 MB |
1311 | const char *sink = route->sink; |
1312 | const char *control = route->control; | |
1313 | const char *source = route->source; | |
2b97eabc RP |
1314 | int ret = 0; |
1315 | ||
1316 | /* find src and dest widgets */ | |
1317 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
1318 | ||
1319 | if (!wsink && !(strcmp(w->name, sink))) { | |
1320 | wsink = w; | |
1321 | continue; | |
1322 | } | |
1323 | if (!wsource && !(strcmp(w->name, source))) { | |
1324 | wsource = w; | |
1325 | } | |
1326 | } | |
1327 | ||
1328 | if (wsource == NULL || wsink == NULL) | |
1329 | return -ENODEV; | |
1330 | ||
1331 | path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL); | |
1332 | if (!path) | |
1333 | return -ENOMEM; | |
1334 | ||
1335 | path->source = wsource; | |
1336 | path->sink = wsink; | |
215edda3 | 1337 | path->connected = route->connected; |
2b97eabc RP |
1338 | INIT_LIST_HEAD(&path->list); |
1339 | INIT_LIST_HEAD(&path->list_source); | |
1340 | INIT_LIST_HEAD(&path->list_sink); | |
1341 | ||
1342 | /* check for external widgets */ | |
1343 | if (wsink->id == snd_soc_dapm_input) { | |
1344 | if (wsource->id == snd_soc_dapm_micbias || | |
1345 | wsource->id == snd_soc_dapm_mic || | |
087d53ab RC |
1346 | wsource->id == snd_soc_dapm_line || |
1347 | wsource->id == snd_soc_dapm_output) | |
2b97eabc RP |
1348 | wsink->ext = 1; |
1349 | } | |
1350 | if (wsource->id == snd_soc_dapm_output) { | |
1351 | if (wsink->id == snd_soc_dapm_spk || | |
1352 | wsink->id == snd_soc_dapm_hp || | |
1e39221e SF |
1353 | wsink->id == snd_soc_dapm_line || |
1354 | wsink->id == snd_soc_dapm_input) | |
2b97eabc RP |
1355 | wsource->ext = 1; |
1356 | } | |
1357 | ||
1358 | /* connect static paths */ | |
1359 | if (control == NULL) { | |
1360 | list_add(&path->list, &codec->dapm_paths); | |
1361 | list_add(&path->list_sink, &wsink->sources); | |
1362 | list_add(&path->list_source, &wsource->sinks); | |
1363 | path->connect = 1; | |
1364 | return 0; | |
1365 | } | |
1366 | ||
1367 | /* connect dynamic paths */ | |
1368 | switch(wsink->id) { | |
1369 | case snd_soc_dapm_adc: | |
1370 | case snd_soc_dapm_dac: | |
1371 | case snd_soc_dapm_pga: | |
1372 | case snd_soc_dapm_input: | |
1373 | case snd_soc_dapm_output: | |
1374 | case snd_soc_dapm_micbias: | |
1375 | case snd_soc_dapm_vmid: | |
1376 | case snd_soc_dapm_pre: | |
1377 | case snd_soc_dapm_post: | |
246d0a17 | 1378 | case snd_soc_dapm_supply: |
010ff262 MB |
1379 | case snd_soc_dapm_aif_in: |
1380 | case snd_soc_dapm_aif_out: | |
2b97eabc RP |
1381 | list_add(&path->list, &codec->dapm_paths); |
1382 | list_add(&path->list_sink, &wsink->sources); | |
1383 | list_add(&path->list_source, &wsource->sinks); | |
1384 | path->connect = 1; | |
1385 | return 0; | |
1386 | case snd_soc_dapm_mux: | |
74155556 | 1387 | case snd_soc_dapm_value_mux: |
2b97eabc RP |
1388 | ret = dapm_connect_mux(codec, wsource, wsink, path, control, |
1389 | &wsink->kcontrols[0]); | |
1390 | if (ret != 0) | |
1391 | goto err; | |
1392 | break; | |
1393 | case snd_soc_dapm_switch: | |
1394 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1395 | case snd_soc_dapm_mixer_named_ctl: |
2b97eabc RP |
1396 | ret = dapm_connect_mixer(codec, wsource, wsink, path, control); |
1397 | if (ret != 0) | |
1398 | goto err; | |
1399 | break; | |
1400 | case snd_soc_dapm_hp: | |
1401 | case snd_soc_dapm_mic: | |
1402 | case snd_soc_dapm_line: | |
1403 | case snd_soc_dapm_spk: | |
1404 | list_add(&path->list, &codec->dapm_paths); | |
1405 | list_add(&path->list_sink, &wsink->sources); | |
1406 | list_add(&path->list_source, &wsource->sinks); | |
1407 | path->connect = 0; | |
1408 | return 0; | |
1409 | } | |
1410 | return 0; | |
1411 | ||
1412 | err: | |
1413 | printk(KERN_WARNING "asoc: no dapm match for %s --> %s --> %s\n", source, | |
1414 | control, sink); | |
1415 | kfree(path); | |
1416 | return ret; | |
1417 | } | |
105f1c28 | 1418 | |
105f1c28 MB |
1419 | /** |
1420 | * snd_soc_dapm_add_routes - Add routes between DAPM widgets | |
1421 | * @codec: codec | |
1422 | * @route: audio routes | |
1423 | * @num: number of routes | |
1424 | * | |
1425 | * Connects 2 dapm widgets together via a named audio path. The sink is | |
1426 | * the widget receiving the audio signal, whilst the source is the sender | |
1427 | * of the audio signal. | |
1428 | * | |
1429 | * Returns 0 for success else error. On error all resources can be freed | |
1430 | * with a call to snd_soc_card_free(). | |
1431 | */ | |
1432 | int snd_soc_dapm_add_routes(struct snd_soc_codec *codec, | |
1433 | const struct snd_soc_dapm_route *route, int num) | |
1434 | { | |
1435 | int i, ret; | |
1436 | ||
1437 | for (i = 0; i < num; i++) { | |
215edda3 | 1438 | ret = snd_soc_dapm_add_route(codec, route); |
105f1c28 MB |
1439 | if (ret < 0) { |
1440 | printk(KERN_ERR "Failed to add route %s->%s\n", | |
1441 | route->source, | |
1442 | route->sink); | |
1443 | return ret; | |
1444 | } | |
1445 | route++; | |
1446 | } | |
1447 | ||
1448 | return 0; | |
1449 | } | |
1450 | EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes); | |
1451 | ||
2b97eabc RP |
1452 | /** |
1453 | * snd_soc_dapm_new_widgets - add new dapm widgets | |
1454 | * @codec: audio codec | |
1455 | * | |
1456 | * Checks the codec for any new dapm widgets and creates them if found. | |
1457 | * | |
1458 | * Returns 0 for success. | |
1459 | */ | |
1460 | int snd_soc_dapm_new_widgets(struct snd_soc_codec *codec) | |
1461 | { | |
1462 | struct snd_soc_dapm_widget *w; | |
1463 | ||
2b97eabc RP |
1464 | list_for_each_entry(w, &codec->dapm_widgets, list) |
1465 | { | |
1466 | if (w->new) | |
1467 | continue; | |
1468 | ||
1469 | switch(w->id) { | |
1470 | case snd_soc_dapm_switch: | |
1471 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1472 | case snd_soc_dapm_mixer_named_ctl: |
b75576d7 | 1473 | w->power_check = dapm_generic_check_power; |
2b97eabc RP |
1474 | dapm_new_mixer(codec, w); |
1475 | break; | |
1476 | case snd_soc_dapm_mux: | |
2e72f8e3 | 1477 | case snd_soc_dapm_value_mux: |
b75576d7 | 1478 | w->power_check = dapm_generic_check_power; |
2b97eabc RP |
1479 | dapm_new_mux(codec, w); |
1480 | break; | |
1481 | case snd_soc_dapm_adc: | |
010ff262 | 1482 | case snd_soc_dapm_aif_out: |
b75576d7 MB |
1483 | w->power_check = dapm_adc_check_power; |
1484 | break; | |
2b97eabc | 1485 | case snd_soc_dapm_dac: |
010ff262 | 1486 | case snd_soc_dapm_aif_in: |
b75576d7 MB |
1487 | w->power_check = dapm_dac_check_power; |
1488 | break; | |
2b97eabc | 1489 | case snd_soc_dapm_pga: |
b75576d7 | 1490 | w->power_check = dapm_generic_check_power; |
2b97eabc RP |
1491 | dapm_new_pga(codec, w); |
1492 | break; | |
1493 | case snd_soc_dapm_input: | |
1494 | case snd_soc_dapm_output: | |
1495 | case snd_soc_dapm_micbias: | |
1496 | case snd_soc_dapm_spk: | |
1497 | case snd_soc_dapm_hp: | |
1498 | case snd_soc_dapm_mic: | |
1499 | case snd_soc_dapm_line: | |
b75576d7 MB |
1500 | w->power_check = dapm_generic_check_power; |
1501 | break; | |
246d0a17 MB |
1502 | case snd_soc_dapm_supply: |
1503 | w->power_check = dapm_supply_check_power; | |
2b97eabc RP |
1504 | case snd_soc_dapm_vmid: |
1505 | case snd_soc_dapm_pre: | |
1506 | case snd_soc_dapm_post: | |
1507 | break; | |
1508 | } | |
1509 | w->new = 1; | |
1510 | } | |
1511 | ||
1512 | dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP); | |
2b97eabc RP |
1513 | return 0; |
1514 | } | |
1515 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets); | |
1516 | ||
1517 | /** | |
1518 | * snd_soc_dapm_get_volsw - dapm mixer get callback | |
1519 | * @kcontrol: mixer control | |
ac11a2b3 | 1520 | * @ucontrol: control element information |
2b97eabc RP |
1521 | * |
1522 | * Callback to get the value of a dapm mixer control. | |
1523 | * | |
1524 | * Returns 0 for success. | |
1525 | */ | |
1526 | int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol, | |
1527 | struct snd_ctl_elem_value *ucontrol) | |
1528 | { | |
1529 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
4eaa9819 JS |
1530 | struct soc_mixer_control *mc = |
1531 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
1532 | unsigned int reg = mc->reg; |
1533 | unsigned int shift = mc->shift; | |
1534 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1535 | int max = mc->max; |
815ecf8d JS |
1536 | unsigned int invert = mc->invert; |
1537 | unsigned int mask = (1 << fls(max)) - 1; | |
2b97eabc | 1538 | |
2b97eabc RP |
1539 | ucontrol->value.integer.value[0] = |
1540 | (snd_soc_read(widget->codec, reg) >> shift) & mask; | |
1541 | if (shift != rshift) | |
1542 | ucontrol->value.integer.value[1] = | |
1543 | (snd_soc_read(widget->codec, reg) >> rshift) & mask; | |
1544 | if (invert) { | |
1545 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1546 | max - ucontrol->value.integer.value[0]; |
2b97eabc RP |
1547 | if (shift != rshift) |
1548 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 1549 | max - ucontrol->value.integer.value[1]; |
2b97eabc RP |
1550 | } |
1551 | ||
1552 | return 0; | |
1553 | } | |
1554 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw); | |
1555 | ||
1556 | /** | |
1557 | * snd_soc_dapm_put_volsw - dapm mixer set callback | |
1558 | * @kcontrol: mixer control | |
ac11a2b3 | 1559 | * @ucontrol: control element information |
2b97eabc RP |
1560 | * |
1561 | * Callback to set the value of a dapm mixer control. | |
1562 | * | |
1563 | * Returns 0 for success. | |
1564 | */ | |
1565 | int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, | |
1566 | struct snd_ctl_elem_value *ucontrol) | |
1567 | { | |
1568 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
4eaa9819 JS |
1569 | struct soc_mixer_control *mc = |
1570 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
1571 | unsigned int reg = mc->reg; |
1572 | unsigned int shift = mc->shift; | |
1573 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1574 | int max = mc->max; |
815ecf8d JS |
1575 | unsigned int mask = (1 << fls(max)) - 1; |
1576 | unsigned int invert = mc->invert; | |
46f5822f | 1577 | unsigned int val, val2, val_mask; |
283375ce | 1578 | int connect; |
2b97eabc RP |
1579 | int ret; |
1580 | ||
1581 | val = (ucontrol->value.integer.value[0] & mask); | |
1582 | ||
1583 | if (invert) | |
a7a4ac86 | 1584 | val = max - val; |
2b97eabc RP |
1585 | val_mask = mask << shift; |
1586 | val = val << shift; | |
1587 | if (shift != rshift) { | |
1588 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1589 | if (invert) | |
a7a4ac86 | 1590 | val2 = max - val2; |
2b97eabc RP |
1591 | val_mask |= mask << rshift; |
1592 | val |= val2 << rshift; | |
1593 | } | |
1594 | ||
1595 | mutex_lock(&widget->codec->mutex); | |
1596 | widget->value = val; | |
1597 | ||
283375ce MB |
1598 | if (snd_soc_test_bits(widget->codec, reg, val_mask, val)) { |
1599 | if (val) | |
1600 | /* new connection */ | |
1601 | connect = invert ? 0:1; | |
1602 | else | |
1603 | /* old connection must be powered down */ | |
1604 | connect = invert ? 1:0; | |
1605 | ||
1606 | dapm_mixer_update_power(widget, kcontrol, connect); | |
1607 | } | |
1608 | ||
2b97eabc RP |
1609 | if (widget->event) { |
1610 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
9af6d956 LG |
1611 | ret = widget->event(widget, kcontrol, |
1612 | SND_SOC_DAPM_PRE_REG); | |
1613 | if (ret < 0) { | |
1614 | ret = 1; | |
2b97eabc | 1615 | goto out; |
9af6d956 | 1616 | } |
2b97eabc RP |
1617 | } |
1618 | ret = snd_soc_update_bits(widget->codec, reg, val_mask, val); | |
1619 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
9af6d956 LG |
1620 | ret = widget->event(widget, kcontrol, |
1621 | SND_SOC_DAPM_POST_REG); | |
2b97eabc RP |
1622 | } else |
1623 | ret = snd_soc_update_bits(widget->codec, reg, val_mask, val); | |
1624 | ||
1625 | out: | |
1626 | mutex_unlock(&widget->codec->mutex); | |
1627 | return ret; | |
1628 | } | |
1629 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw); | |
1630 | ||
1631 | /** | |
1632 | * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback | |
1633 | * @kcontrol: mixer control | |
ac11a2b3 | 1634 | * @ucontrol: control element information |
2b97eabc RP |
1635 | * |
1636 | * Callback to get the value of a dapm enumerated double mixer control. | |
1637 | * | |
1638 | * Returns 0 for success. | |
1639 | */ | |
1640 | int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol, | |
1641 | struct snd_ctl_elem_value *ucontrol) | |
1642 | { | |
1643 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1644 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
46f5822f | 1645 | unsigned int val, bitmask; |
2b97eabc | 1646 | |
f8ba0b7b | 1647 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
1648 | ; |
1649 | val = snd_soc_read(widget->codec, e->reg); | |
1650 | ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1); | |
1651 | if (e->shift_l != e->shift_r) | |
1652 | ucontrol->value.enumerated.item[1] = | |
1653 | (val >> e->shift_r) & (bitmask - 1); | |
1654 | ||
1655 | return 0; | |
1656 | } | |
1657 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double); | |
1658 | ||
1659 | /** | |
1660 | * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback | |
1661 | * @kcontrol: mixer control | |
ac11a2b3 | 1662 | * @ucontrol: control element information |
2b97eabc RP |
1663 | * |
1664 | * Callback to set the value of a dapm enumerated double mixer control. | |
1665 | * | |
1666 | * Returns 0 for success. | |
1667 | */ | |
1668 | int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, | |
1669 | struct snd_ctl_elem_value *ucontrol) | |
1670 | { | |
1671 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1672 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
3a65577d | 1673 | unsigned int val, mux, change; |
46f5822f | 1674 | unsigned int mask, bitmask; |
2b97eabc RP |
1675 | int ret = 0; |
1676 | ||
f8ba0b7b | 1677 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc | 1678 | ; |
f8ba0b7b | 1679 | if (ucontrol->value.enumerated.item[0] > e->max - 1) |
2b97eabc RP |
1680 | return -EINVAL; |
1681 | mux = ucontrol->value.enumerated.item[0]; | |
1682 | val = mux << e->shift_l; | |
1683 | mask = (bitmask - 1) << e->shift_l; | |
1684 | if (e->shift_l != e->shift_r) { | |
f8ba0b7b | 1685 | if (ucontrol->value.enumerated.item[1] > e->max - 1) |
2b97eabc RP |
1686 | return -EINVAL; |
1687 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
1688 | mask |= (bitmask - 1) << e->shift_r; | |
1689 | } | |
1690 | ||
1691 | mutex_lock(&widget->codec->mutex); | |
1692 | widget->value = val; | |
3a65577d MB |
1693 | change = snd_soc_test_bits(widget->codec, e->reg, mask, val); |
1694 | dapm_mux_update_power(widget, kcontrol, change, mux, e); | |
1642e3d4 MB |
1695 | |
1696 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
1697 | ret = widget->event(widget, | |
1698 | kcontrol, SND_SOC_DAPM_PRE_REG); | |
1699 | if (ret < 0) | |
1700 | goto out; | |
1701 | } | |
1702 | ||
1703 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1704 | ||
1705 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
1706 | ret = widget->event(widget, | |
1707 | kcontrol, SND_SOC_DAPM_POST_REG); | |
2b97eabc RP |
1708 | |
1709 | out: | |
1710 | mutex_unlock(&widget->codec->mutex); | |
1711 | return ret; | |
1712 | } | |
1713 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double); | |
1714 | ||
d2b247a8 MB |
1715 | /** |
1716 | * snd_soc_dapm_get_enum_virt - Get virtual DAPM mux | |
1717 | * @kcontrol: mixer control | |
1718 | * @ucontrol: control element information | |
1719 | * | |
1720 | * Returns 0 for success. | |
1721 | */ | |
1722 | int snd_soc_dapm_get_enum_virt(struct snd_kcontrol *kcontrol, | |
1723 | struct snd_ctl_elem_value *ucontrol) | |
1724 | { | |
1725 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1726 | ||
1727 | ucontrol->value.enumerated.item[0] = widget->value; | |
1728 | ||
1729 | return 0; | |
1730 | } | |
1731 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_virt); | |
1732 | ||
1733 | /** | |
1734 | * snd_soc_dapm_put_enum_virt - Set virtual DAPM mux | |
1735 | * @kcontrol: mixer control | |
1736 | * @ucontrol: control element information | |
1737 | * | |
1738 | * Returns 0 for success. | |
1739 | */ | |
1740 | int snd_soc_dapm_put_enum_virt(struct snd_kcontrol *kcontrol, | |
1741 | struct snd_ctl_elem_value *ucontrol) | |
1742 | { | |
1743 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1744 | struct soc_enum *e = | |
1745 | (struct soc_enum *)kcontrol->private_value; | |
1746 | int change; | |
1747 | int ret = 0; | |
1748 | ||
1749 | if (ucontrol->value.enumerated.item[0] >= e->max) | |
1750 | return -EINVAL; | |
1751 | ||
1752 | mutex_lock(&widget->codec->mutex); | |
1753 | ||
1754 | change = widget->value != ucontrol->value.enumerated.item[0]; | |
1755 | widget->value = ucontrol->value.enumerated.item[0]; | |
1756 | dapm_mux_update_power(widget, kcontrol, change, widget->value, e); | |
1757 | ||
1758 | mutex_unlock(&widget->codec->mutex); | |
1759 | return ret; | |
1760 | } | |
1761 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt); | |
1762 | ||
2e72f8e3 PU |
1763 | /** |
1764 | * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get | |
1765 | * callback | |
1766 | * @kcontrol: mixer control | |
1767 | * @ucontrol: control element information | |
1768 | * | |
1769 | * Callback to get the value of a dapm semi enumerated double mixer control. | |
1770 | * | |
1771 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
1772 | * used for handling bitfield coded enumeration for example. | |
1773 | * | |
1774 | * Returns 0 for success. | |
1775 | */ | |
1776 | int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol *kcontrol, | |
1777 | struct snd_ctl_elem_value *ucontrol) | |
1778 | { | |
1779 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
74155556 | 1780 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f | 1781 | unsigned int reg_val, val, mux; |
2e72f8e3 PU |
1782 | |
1783 | reg_val = snd_soc_read(widget->codec, e->reg); | |
1784 | val = (reg_val >> e->shift_l) & e->mask; | |
1785 | for (mux = 0; mux < e->max; mux++) { | |
1786 | if (val == e->values[mux]) | |
1787 | break; | |
1788 | } | |
1789 | ucontrol->value.enumerated.item[0] = mux; | |
1790 | if (e->shift_l != e->shift_r) { | |
1791 | val = (reg_val >> e->shift_r) & e->mask; | |
1792 | for (mux = 0; mux < e->max; mux++) { | |
1793 | if (val == e->values[mux]) | |
1794 | break; | |
1795 | } | |
1796 | ucontrol->value.enumerated.item[1] = mux; | |
1797 | } | |
1798 | ||
1799 | return 0; | |
1800 | } | |
1801 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double); | |
1802 | ||
1803 | /** | |
1804 | * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set | |
1805 | * callback | |
1806 | * @kcontrol: mixer control | |
1807 | * @ucontrol: control element information | |
1808 | * | |
1809 | * Callback to set the value of a dapm semi enumerated double mixer control. | |
1810 | * | |
1811 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
1812 | * used for handling bitfield coded enumeration for example. | |
1813 | * | |
1814 | * Returns 0 for success. | |
1815 | */ | |
1816 | int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol, | |
1817 | struct snd_ctl_elem_value *ucontrol) | |
1818 | { | |
1819 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
74155556 | 1820 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
3a65577d | 1821 | unsigned int val, mux, change; |
46f5822f | 1822 | unsigned int mask; |
2e72f8e3 PU |
1823 | int ret = 0; |
1824 | ||
1825 | if (ucontrol->value.enumerated.item[0] > e->max - 1) | |
1826 | return -EINVAL; | |
1827 | mux = ucontrol->value.enumerated.item[0]; | |
1828 | val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l; | |
1829 | mask = e->mask << e->shift_l; | |
1830 | if (e->shift_l != e->shift_r) { | |
1831 | if (ucontrol->value.enumerated.item[1] > e->max - 1) | |
1832 | return -EINVAL; | |
1833 | val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r; | |
1834 | mask |= e->mask << e->shift_r; | |
1835 | } | |
1836 | ||
1837 | mutex_lock(&widget->codec->mutex); | |
1838 | widget->value = val; | |
3a65577d MB |
1839 | change = snd_soc_test_bits(widget->codec, e->reg, mask, val); |
1840 | dapm_mux_update_power(widget, kcontrol, change, mux, e); | |
1642e3d4 MB |
1841 | |
1842 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
1843 | ret = widget->event(widget, | |
1844 | kcontrol, SND_SOC_DAPM_PRE_REG); | |
1845 | if (ret < 0) | |
1846 | goto out; | |
1847 | } | |
1848 | ||
1849 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1850 | ||
1851 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
1852 | ret = widget->event(widget, | |
1853 | kcontrol, SND_SOC_DAPM_POST_REG); | |
2e72f8e3 PU |
1854 | |
1855 | out: | |
1856 | mutex_unlock(&widget->codec->mutex); | |
1857 | return ret; | |
1858 | } | |
1859 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double); | |
1860 | ||
8b37dbd2 MB |
1861 | /** |
1862 | * snd_soc_dapm_info_pin_switch - Info for a pin switch | |
1863 | * | |
1864 | * @kcontrol: mixer control | |
1865 | * @uinfo: control element information | |
1866 | * | |
1867 | * Callback to provide information about a pin switch control. | |
1868 | */ | |
1869 | int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol, | |
1870 | struct snd_ctl_elem_info *uinfo) | |
1871 | { | |
1872 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1873 | uinfo->count = 1; | |
1874 | uinfo->value.integer.min = 0; | |
1875 | uinfo->value.integer.max = 1; | |
1876 | ||
1877 | return 0; | |
1878 | } | |
1879 | EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch); | |
1880 | ||
1881 | /** | |
1882 | * snd_soc_dapm_get_pin_switch - Get information for a pin switch | |
1883 | * | |
1884 | * @kcontrol: mixer control | |
1885 | * @ucontrol: Value | |
1886 | */ | |
1887 | int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol, | |
1888 | struct snd_ctl_elem_value *ucontrol) | |
1889 | { | |
1890 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1891 | const char *pin = (const char *)kcontrol->private_value; | |
1892 | ||
1893 | mutex_lock(&codec->mutex); | |
1894 | ||
1895 | ucontrol->value.integer.value[0] = | |
1896 | snd_soc_dapm_get_pin_status(codec, pin); | |
1897 | ||
1898 | mutex_unlock(&codec->mutex); | |
1899 | ||
1900 | return 0; | |
1901 | } | |
1902 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch); | |
1903 | ||
1904 | /** | |
1905 | * snd_soc_dapm_put_pin_switch - Set information for a pin switch | |
1906 | * | |
1907 | * @kcontrol: mixer control | |
1908 | * @ucontrol: Value | |
1909 | */ | |
1910 | int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol, | |
1911 | struct snd_ctl_elem_value *ucontrol) | |
1912 | { | |
1913 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1914 | const char *pin = (const char *)kcontrol->private_value; | |
1915 | ||
1916 | mutex_lock(&codec->mutex); | |
1917 | ||
1918 | if (ucontrol->value.integer.value[0]) | |
1919 | snd_soc_dapm_enable_pin(codec, pin); | |
1920 | else | |
1921 | snd_soc_dapm_disable_pin(codec, pin); | |
1922 | ||
1923 | snd_soc_dapm_sync(codec); | |
1924 | ||
1925 | mutex_unlock(&codec->mutex); | |
1926 | ||
1927 | return 0; | |
1928 | } | |
1929 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch); | |
1930 | ||
2b97eabc RP |
1931 | /** |
1932 | * snd_soc_dapm_new_control - create new dapm control | |
1933 | * @codec: audio codec | |
1934 | * @widget: widget template | |
1935 | * | |
1936 | * Creates a new dapm control based upon the template. | |
1937 | * | |
1938 | * Returns 0 for success else error. | |
1939 | */ | |
1940 | int snd_soc_dapm_new_control(struct snd_soc_codec *codec, | |
1941 | const struct snd_soc_dapm_widget *widget) | |
1942 | { | |
1943 | struct snd_soc_dapm_widget *w; | |
1944 | ||
1945 | if ((w = dapm_cnew_widget(widget)) == NULL) | |
1946 | return -ENOMEM; | |
1947 | ||
1948 | w->codec = codec; | |
1949 | INIT_LIST_HEAD(&w->sources); | |
1950 | INIT_LIST_HEAD(&w->sinks); | |
1951 | INIT_LIST_HEAD(&w->list); | |
1952 | list_add(&w->list, &codec->dapm_widgets); | |
1953 | ||
1954 | /* machine layer set ups unconnected pins and insertions */ | |
1955 | w->connected = 1; | |
1956 | return 0; | |
1957 | } | |
1958 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control); | |
1959 | ||
4ba1327a MB |
1960 | /** |
1961 | * snd_soc_dapm_new_controls - create new dapm controls | |
1962 | * @codec: audio codec | |
1963 | * @widget: widget array | |
1964 | * @num: number of widgets | |
1965 | * | |
1966 | * Creates new DAPM controls based upon the templates. | |
1967 | * | |
1968 | * Returns 0 for success else error. | |
1969 | */ | |
1970 | int snd_soc_dapm_new_controls(struct snd_soc_codec *codec, | |
1971 | const struct snd_soc_dapm_widget *widget, | |
1972 | int num) | |
1973 | { | |
1974 | int i, ret; | |
1975 | ||
1976 | for (i = 0; i < num; i++) { | |
1977 | ret = snd_soc_dapm_new_control(codec, widget); | |
b8b33cb5 MB |
1978 | if (ret < 0) { |
1979 | printk(KERN_ERR | |
1980 | "ASoC: Failed to create DAPM control %s: %d\n", | |
1981 | widget->name, ret); | |
4ba1327a | 1982 | return ret; |
b8b33cb5 | 1983 | } |
4ba1327a MB |
1984 | widget++; |
1985 | } | |
1986 | return 0; | |
1987 | } | |
1988 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls); | |
1989 | ||
1990 | ||
2b97eabc RP |
1991 | /** |
1992 | * snd_soc_dapm_stream_event - send a stream event to the dapm core | |
1993 | * @codec: audio codec | |
1994 | * @stream: stream name | |
1995 | * @event: stream event | |
1996 | * | |
1997 | * Sends a stream event to the dapm core. The core then makes any | |
1998 | * necessary widget power changes. | |
1999 | * | |
2000 | * Returns 0 for success else error. | |
2001 | */ | |
2002 | int snd_soc_dapm_stream_event(struct snd_soc_codec *codec, | |
2003 | char *stream, int event) | |
2004 | { | |
2005 | struct snd_soc_dapm_widget *w; | |
2006 | ||
11da21a7 SF |
2007 | if (stream == NULL) |
2008 | return 0; | |
2009 | ||
2b97eabc RP |
2010 | mutex_lock(&codec->mutex); |
2011 | list_for_each_entry(w, &codec->dapm_widgets, list) | |
2012 | { | |
2013 | if (!w->sname) | |
2014 | continue; | |
c1286b86 MB |
2015 | pr_debug("widget %s\n %s stream %s event %d\n", |
2016 | w->name, w->sname, stream, event); | |
2b97eabc RP |
2017 | if (strstr(w->sname, stream)) { |
2018 | switch(event) { | |
2019 | case SND_SOC_DAPM_STREAM_START: | |
2020 | w->active = 1; | |
2021 | break; | |
2022 | case SND_SOC_DAPM_STREAM_STOP: | |
2023 | w->active = 0; | |
2024 | break; | |
2025 | case SND_SOC_DAPM_STREAM_SUSPEND: | |
2b97eabc | 2026 | case SND_SOC_DAPM_STREAM_RESUME: |
2b97eabc | 2027 | case SND_SOC_DAPM_STREAM_PAUSE_PUSH: |
2b97eabc RP |
2028 | case SND_SOC_DAPM_STREAM_PAUSE_RELEASE: |
2029 | break; | |
2030 | } | |
2031 | } | |
2032 | } | |
2b97eabc RP |
2033 | |
2034 | dapm_power_widgets(codec, event); | |
8e8b2d67 | 2035 | mutex_unlock(&codec->mutex); |
2b97eabc RP |
2036 | return 0; |
2037 | } | |
2038 | EXPORT_SYMBOL_GPL(snd_soc_dapm_stream_event); | |
2039 | ||
2040 | /** | |
a5302181 | 2041 | * snd_soc_dapm_enable_pin - enable pin. |
ac11a2b3 | 2042 | * @codec: SoC codec |
a5302181 | 2043 | * @pin: pin name |
2b97eabc | 2044 | * |
74b8f955 | 2045 | * Enables input/output pin and its parents or children widgets iff there is |
a5302181 LG |
2046 | * a valid audio route and active audio stream. |
2047 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2048 | * do any widget power switching. | |
2b97eabc | 2049 | */ |
1649923d | 2050 | int snd_soc_dapm_enable_pin(struct snd_soc_codec *codec, const char *pin) |
2b97eabc | 2051 | { |
a5302181 LG |
2052 | return snd_soc_dapm_set_pin(codec, pin, 1); |
2053 | } | |
2054 | EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin); | |
2b97eabc | 2055 | |
da34183e MB |
2056 | /** |
2057 | * snd_soc_dapm_force_enable_pin - force a pin to be enabled | |
2058 | * @codec: SoC codec | |
2059 | * @pin: pin name | |
2060 | * | |
2061 | * Enables input/output pin regardless of any other state. This is | |
2062 | * intended for use with microphone bias supplies used in microphone | |
2063 | * jack detection. | |
2064 | * | |
2065 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2066 | * do any widget power switching. | |
2067 | */ | |
2068 | int snd_soc_dapm_force_enable_pin(struct snd_soc_codec *codec, const char *pin) | |
2069 | { | |
2070 | struct snd_soc_dapm_widget *w; | |
2071 | ||
2072 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
2073 | if (!strcmp(w->name, pin)) { | |
2074 | pr_debug("dapm: %s: pin %s\n", codec->name, pin); | |
2075 | w->connected = 1; | |
2076 | w->force = 1; | |
2077 | return 0; | |
2078 | } | |
2079 | } | |
2080 | ||
2081 | pr_err("dapm: %s: configuring unknown pin %s\n", codec->name, pin); | |
2082 | return -EINVAL; | |
2083 | } | |
2084 | EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin); | |
2085 | ||
a5302181 LG |
2086 | /** |
2087 | * snd_soc_dapm_disable_pin - disable pin. | |
2088 | * @codec: SoC codec | |
2089 | * @pin: pin name | |
2090 | * | |
74b8f955 | 2091 | * Disables input/output pin and its parents or children widgets. |
a5302181 LG |
2092 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to |
2093 | * do any widget power switching. | |
2094 | */ | |
1649923d | 2095 | int snd_soc_dapm_disable_pin(struct snd_soc_codec *codec, const char *pin) |
a5302181 LG |
2096 | { |
2097 | return snd_soc_dapm_set_pin(codec, pin, 0); | |
2b97eabc | 2098 | } |
a5302181 | 2099 | EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin); |
2b97eabc | 2100 | |
5817b52a MB |
2101 | /** |
2102 | * snd_soc_dapm_nc_pin - permanently disable pin. | |
2103 | * @codec: SoC codec | |
2104 | * @pin: pin name | |
2105 | * | |
2106 | * Marks the specified pin as being not connected, disabling it along | |
2107 | * any parent or child widgets. At present this is identical to | |
2108 | * snd_soc_dapm_disable_pin() but in future it will be extended to do | |
2109 | * additional things such as disabling controls which only affect | |
2110 | * paths through the pin. | |
2111 | * | |
2112 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2113 | * do any widget power switching. | |
2114 | */ | |
1649923d | 2115 | int snd_soc_dapm_nc_pin(struct snd_soc_codec *codec, const char *pin) |
5817b52a MB |
2116 | { |
2117 | return snd_soc_dapm_set_pin(codec, pin, 0); | |
2118 | } | |
2119 | EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin); | |
2120 | ||
eeec12bf | 2121 | /** |
a5302181 | 2122 | * snd_soc_dapm_get_pin_status - get audio pin status |
eeec12bf | 2123 | * @codec: audio codec |
a5302181 | 2124 | * @pin: audio signal pin endpoint (or start point) |
eeec12bf | 2125 | * |
a5302181 | 2126 | * Get audio pin status - connected or disconnected. |
eeec12bf | 2127 | * |
a5302181 | 2128 | * Returns 1 for connected otherwise 0. |
eeec12bf | 2129 | */ |
1649923d | 2130 | int snd_soc_dapm_get_pin_status(struct snd_soc_codec *codec, const char *pin) |
eeec12bf GG |
2131 | { |
2132 | struct snd_soc_dapm_widget *w; | |
2133 | ||
2134 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
a5302181 | 2135 | if (!strcmp(w->name, pin)) |
eeec12bf GG |
2136 | return w->connected; |
2137 | } | |
2138 | ||
2139 | return 0; | |
2140 | } | |
a5302181 | 2141 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status); |
eeec12bf | 2142 | |
1547aba9 MB |
2143 | /** |
2144 | * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint | |
2145 | * @codec: audio codec | |
2146 | * @pin: audio signal pin endpoint (or start point) | |
2147 | * | |
2148 | * Mark the given endpoint or pin as ignoring suspend. When the | |
2149 | * system is disabled a path between two endpoints flagged as ignoring | |
2150 | * suspend will not be disabled. The path must already be enabled via | |
2151 | * normal means at suspend time, it will not be turned on if it was not | |
2152 | * already enabled. | |
2153 | */ | |
2154 | int snd_soc_dapm_ignore_suspend(struct snd_soc_codec *codec, const char *pin) | |
2155 | { | |
2156 | struct snd_soc_dapm_widget *w; | |
2157 | ||
2158 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
2159 | if (!strcmp(w->name, pin)) { | |
2160 | w->ignore_suspend = 1; | |
2161 | return 0; | |
2162 | } | |
2163 | } | |
2164 | ||
2165 | pr_err("Unknown DAPM pin: %s\n", pin); | |
2166 | return -EINVAL; | |
2167 | } | |
2168 | EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend); | |
2169 | ||
2b97eabc RP |
2170 | /** |
2171 | * snd_soc_dapm_free - free dapm resources | |
2172 | * @socdev: SoC device | |
2173 | * | |
2174 | * Free all dapm widgets and resources. | |
2175 | */ | |
2176 | void snd_soc_dapm_free(struct snd_soc_device *socdev) | |
2177 | { | |
6627a653 | 2178 | struct snd_soc_codec *codec = socdev->card->codec; |
2b97eabc RP |
2179 | |
2180 | snd_soc_dapm_sys_remove(socdev->dev); | |
2181 | dapm_free_widgets(codec); | |
2182 | } | |
2183 | EXPORT_SYMBOL_GPL(snd_soc_dapm_free); | |
2184 | ||
51737470 MB |
2185 | /* |
2186 | * snd_soc_dapm_shutdown - callback for system shutdown | |
2187 | */ | |
2188 | void snd_soc_dapm_shutdown(struct snd_soc_device *socdev) | |
2189 | { | |
2190 | struct snd_soc_codec *codec = socdev->card->codec; | |
2191 | struct snd_soc_dapm_widget *w; | |
2192 | LIST_HEAD(down_list); | |
2193 | int powerdown = 0; | |
2194 | ||
2195 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
2196 | if (w->power) { | |
2197 | dapm_seq_insert(w, &down_list, dapm_down_seq); | |
c2caa4da | 2198 | w->power = 0; |
51737470 MB |
2199 | powerdown = 1; |
2200 | } | |
2201 | } | |
2202 | ||
2203 | /* If there were no widgets to power down we're already in | |
2204 | * standby. | |
2205 | */ | |
2206 | if (powerdown) { | |
2207 | snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_PREPARE); | |
2208 | dapm_seq_run(codec, &down_list, 0, dapm_down_seq); | |
2209 | snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_STANDBY); | |
2210 | } | |
2211 | ||
2212 | snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_OFF); | |
2213 | } | |
2214 | ||
2b97eabc | 2215 | /* Module information */ |
d331124d | 2216 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
2b97eabc RP |
2217 | MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC"); |
2218 | MODULE_LICENSE("GPL"); |