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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 | |
f0fba2ad | 115 | * @card: audio device |
452c5eaa MB |
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 | */ | |
f0fba2ad LG |
122 | static int snd_soc_dapm_set_bias_level(struct snd_soc_card *card, |
123 | struct snd_soc_codec *codec, enum snd_soc_bias_level level) | |
452c5eaa | 124 | { |
452c5eaa MB |
125 | int ret = 0; |
126 | ||
f83fba8b MB |
127 | switch (level) { |
128 | case SND_SOC_BIAS_ON: | |
f0fba2ad | 129 | dev_dbg(codec->dev, "Setting full bias\n"); |
f83fba8b MB |
130 | break; |
131 | case SND_SOC_BIAS_PREPARE: | |
f0fba2ad | 132 | dev_dbg(codec->dev, "Setting bias prepare\n"); |
f83fba8b MB |
133 | break; |
134 | case SND_SOC_BIAS_STANDBY: | |
f0fba2ad | 135 | dev_dbg(codec->dev, "Setting standby bias\n"); |
f83fba8b MB |
136 | break; |
137 | case SND_SOC_BIAS_OFF: | |
f0fba2ad | 138 | dev_dbg(codec->dev, "Setting bias off\n"); |
f83fba8b MB |
139 | break; |
140 | default: | |
f0fba2ad | 141 | dev_err(codec->dev, "Setting invalid bias %d\n", level); |
f83fba8b MB |
142 | return -EINVAL; |
143 | } | |
144 | ||
f0fba2ad | 145 | if (card && card->set_bias_level) |
452c5eaa | 146 | ret = card->set_bias_level(card, level); |
474e09ca | 147 | if (ret == 0) { |
f0fba2ad LG |
148 | if (codec->driver->set_bias_level) |
149 | ret = codec->driver->set_bias_level(codec, level); | |
474e09ca MB |
150 | else |
151 | codec->bias_level = level; | |
152 | } | |
452c5eaa MB |
153 | |
154 | return ret; | |
155 | } | |
156 | ||
2b97eabc RP |
157 | /* set up initial codec paths */ |
158 | static void dapm_set_path_status(struct snd_soc_dapm_widget *w, | |
159 | struct snd_soc_dapm_path *p, int i) | |
160 | { | |
161 | switch (w->id) { | |
162 | case snd_soc_dapm_switch: | |
ca9c1aae IM |
163 | case snd_soc_dapm_mixer: |
164 | case snd_soc_dapm_mixer_named_ctl: { | |
2b97eabc | 165 | int val; |
4eaa9819 JS |
166 | struct soc_mixer_control *mc = (struct soc_mixer_control *) |
167 | w->kcontrols[i].private_value; | |
815ecf8d JS |
168 | unsigned int reg = mc->reg; |
169 | unsigned int shift = mc->shift; | |
4eaa9819 | 170 | int max = mc->max; |
815ecf8d JS |
171 | unsigned int mask = (1 << fls(max)) - 1; |
172 | unsigned int invert = mc->invert; | |
2b97eabc RP |
173 | |
174 | val = snd_soc_read(w->codec, reg); | |
175 | val = (val >> shift) & mask; | |
176 | ||
177 | if ((invert && !val) || (!invert && val)) | |
178 | p->connect = 1; | |
179 | else | |
180 | p->connect = 0; | |
181 | } | |
182 | break; | |
183 | case snd_soc_dapm_mux: { | |
184 | struct soc_enum *e = (struct soc_enum *)w->kcontrols[i].private_value; | |
185 | int val, item, bitmask; | |
186 | ||
f8ba0b7b | 187 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
188 | ; |
189 | val = snd_soc_read(w->codec, e->reg); | |
190 | item = (val >> e->shift_l) & (bitmask - 1); | |
191 | ||
192 | p->connect = 0; | |
f8ba0b7b | 193 | for (i = 0; i < e->max; i++) { |
2b97eabc RP |
194 | if (!(strcmp(p->name, e->texts[i])) && item == i) |
195 | p->connect = 1; | |
196 | } | |
197 | } | |
198 | break; | |
2e72f8e3 | 199 | case snd_soc_dapm_value_mux: { |
74155556 | 200 | struct soc_enum *e = (struct soc_enum *) |
2e72f8e3 PU |
201 | w->kcontrols[i].private_value; |
202 | int val, item; | |
203 | ||
204 | val = snd_soc_read(w->codec, e->reg); | |
205 | val = (val >> e->shift_l) & e->mask; | |
206 | for (item = 0; item < e->max; item++) { | |
207 | if (val == e->values[item]) | |
208 | break; | |
209 | } | |
210 | ||
211 | p->connect = 0; | |
212 | for (i = 0; i < e->max; i++) { | |
213 | if (!(strcmp(p->name, e->texts[i])) && item == i) | |
214 | p->connect = 1; | |
215 | } | |
216 | } | |
217 | break; | |
2b97eabc RP |
218 | /* does not effect routing - always connected */ |
219 | case snd_soc_dapm_pga: | |
220 | case snd_soc_dapm_output: | |
221 | case snd_soc_dapm_adc: | |
222 | case snd_soc_dapm_input: | |
223 | case snd_soc_dapm_dac: | |
224 | case snd_soc_dapm_micbias: | |
225 | case snd_soc_dapm_vmid: | |
246d0a17 | 226 | case snd_soc_dapm_supply: |
010ff262 MB |
227 | case snd_soc_dapm_aif_in: |
228 | case snd_soc_dapm_aif_out: | |
2b97eabc RP |
229 | p->connect = 1; |
230 | break; | |
231 | /* does effect routing - dynamically connected */ | |
232 | case snd_soc_dapm_hp: | |
233 | case snd_soc_dapm_mic: | |
234 | case snd_soc_dapm_spk: | |
235 | case snd_soc_dapm_line: | |
236 | case snd_soc_dapm_pre: | |
237 | case snd_soc_dapm_post: | |
238 | p->connect = 0; | |
239 | break; | |
240 | } | |
241 | } | |
242 | ||
74b8f955 | 243 | /* connect mux widget to its interconnecting audio paths */ |
2b97eabc RP |
244 | static int dapm_connect_mux(struct snd_soc_codec *codec, |
245 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, | |
246 | struct snd_soc_dapm_path *path, const char *control_name, | |
247 | const struct snd_kcontrol_new *kcontrol) | |
248 | { | |
249 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
250 | int i; | |
251 | ||
f8ba0b7b | 252 | for (i = 0; i < e->max; i++) { |
2b97eabc RP |
253 | if (!(strcmp(control_name, e->texts[i]))) { |
254 | list_add(&path->list, &codec->dapm_paths); | |
255 | list_add(&path->list_sink, &dest->sources); | |
256 | list_add(&path->list_source, &src->sinks); | |
257 | path->name = (char*)e->texts[i]; | |
258 | dapm_set_path_status(dest, path, 0); | |
259 | return 0; | |
260 | } | |
261 | } | |
262 | ||
263 | return -ENODEV; | |
264 | } | |
265 | ||
74b8f955 | 266 | /* connect mixer widget to its interconnecting audio paths */ |
2b97eabc RP |
267 | static int dapm_connect_mixer(struct snd_soc_codec *codec, |
268 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, | |
269 | struct snd_soc_dapm_path *path, const char *control_name) | |
270 | { | |
271 | int i; | |
272 | ||
273 | /* search for mixer kcontrol */ | |
274 | for (i = 0; i < dest->num_kcontrols; i++) { | |
275 | if (!strcmp(control_name, dest->kcontrols[i].name)) { | |
276 | list_add(&path->list, &codec->dapm_paths); | |
277 | list_add(&path->list_sink, &dest->sources); | |
278 | list_add(&path->list_source, &src->sinks); | |
279 | path->name = dest->kcontrols[i].name; | |
280 | dapm_set_path_status(dest, path, i); | |
281 | return 0; | |
282 | } | |
283 | } | |
284 | return -ENODEV; | |
285 | } | |
286 | ||
287 | /* update dapm codec register bits */ | |
288 | static int dapm_update_bits(struct snd_soc_dapm_widget *widget) | |
289 | { | |
290 | int change, power; | |
46f5822f | 291 | unsigned int old, new; |
2b97eabc RP |
292 | struct snd_soc_codec *codec = widget->codec; |
293 | ||
294 | /* check for valid widgets */ | |
295 | if (widget->reg < 0 || widget->id == snd_soc_dapm_input || | |
296 | widget->id == snd_soc_dapm_output || | |
297 | widget->id == snd_soc_dapm_hp || | |
298 | widget->id == snd_soc_dapm_mic || | |
299 | widget->id == snd_soc_dapm_line || | |
300 | widget->id == snd_soc_dapm_spk) | |
301 | return 0; | |
302 | ||
303 | power = widget->power; | |
304 | if (widget->invert) | |
305 | power = (power ? 0:1); | |
306 | ||
307 | old = snd_soc_read(codec, widget->reg); | |
308 | new = (old & ~(0x1 << widget->shift)) | (power << widget->shift); | |
309 | ||
310 | change = old != new; | |
311 | if (change) { | |
12ef193d TK |
312 | pop_dbg(codec->pop_time, "pop test %s : %s in %d ms\n", |
313 | widget->name, widget->power ? "on" : "off", | |
314 | codec->pop_time); | |
12ef193d | 315 | pop_wait(codec->pop_time); |
69224719 | 316 | snd_soc_write(codec, widget->reg, new); |
2b97eabc | 317 | } |
c1286b86 MB |
318 | pr_debug("reg %x old %x new %x change %d\n", widget->reg, |
319 | old, new, change); | |
2b97eabc RP |
320 | return change; |
321 | } | |
322 | ||
2b97eabc RP |
323 | /* create new dapm mixer control */ |
324 | static int dapm_new_mixer(struct snd_soc_codec *codec, | |
325 | struct snd_soc_dapm_widget *w) | |
326 | { | |
327 | int i, ret = 0; | |
219b93f5 | 328 | size_t name_len; |
2b97eabc RP |
329 | struct snd_soc_dapm_path *path; |
330 | ||
331 | /* add kcontrol */ | |
332 | for (i = 0; i < w->num_kcontrols; i++) { | |
333 | ||
334 | /* match name */ | |
335 | list_for_each_entry(path, &w->sources, list_sink) { | |
336 | ||
337 | /* mixer/mux paths name must match control name */ | |
338 | if (path->name != (char*)w->kcontrols[i].name) | |
339 | continue; | |
340 | ||
ca9c1aae IM |
341 | /* add dapm control with long name. |
342 | * for dapm_mixer this is the concatenation of the | |
343 | * mixer and kcontrol name. | |
344 | * for dapm_mixer_named_ctl this is simply the | |
345 | * kcontrol name. | |
346 | */ | |
347 | name_len = strlen(w->kcontrols[i].name) + 1; | |
07495f3e | 348 | if (w->id != snd_soc_dapm_mixer_named_ctl) |
ca9c1aae IM |
349 | name_len += 1 + strlen(w->name); |
350 | ||
219b93f5 | 351 | path->long_name = kmalloc(name_len, GFP_KERNEL); |
ca9c1aae | 352 | |
2b97eabc RP |
353 | if (path->long_name == NULL) |
354 | return -ENOMEM; | |
355 | ||
ca9c1aae | 356 | switch (w->id) { |
ca9c1aae IM |
357 | default: |
358 | snprintf(path->long_name, name_len, "%s %s", | |
359 | w->name, w->kcontrols[i].name); | |
07495f3e | 360 | break; |
ca9c1aae IM |
361 | case snd_soc_dapm_mixer_named_ctl: |
362 | snprintf(path->long_name, name_len, "%s", | |
363 | w->kcontrols[i].name); | |
07495f3e | 364 | break; |
ca9c1aae IM |
365 | } |
366 | ||
219b93f5 MB |
367 | path->long_name[name_len - 1] = '\0'; |
368 | ||
2b97eabc RP |
369 | path->kcontrol = snd_soc_cnew(&w->kcontrols[i], w, |
370 | path->long_name); | |
f0fba2ad | 371 | ret = snd_ctl_add(codec->card->snd_card, path->kcontrol); |
2b97eabc | 372 | if (ret < 0) { |
6553e192 MB |
373 | printk(KERN_ERR "asoc: failed to add dapm kcontrol %s: %d\n", |
374 | path->long_name, | |
375 | ret); | |
2b97eabc RP |
376 | kfree(path->long_name); |
377 | path->long_name = NULL; | |
378 | return ret; | |
379 | } | |
380 | } | |
381 | } | |
382 | return ret; | |
383 | } | |
384 | ||
385 | /* create new dapm mux control */ | |
386 | static int dapm_new_mux(struct snd_soc_codec *codec, | |
387 | struct snd_soc_dapm_widget *w) | |
388 | { | |
389 | struct snd_soc_dapm_path *path = NULL; | |
390 | struct snd_kcontrol *kcontrol; | |
391 | int ret = 0; | |
392 | ||
393 | if (!w->num_kcontrols) { | |
394 | printk(KERN_ERR "asoc: mux %s has no controls\n", w->name); | |
395 | return -EINVAL; | |
396 | } | |
397 | ||
398 | kcontrol = snd_soc_cnew(&w->kcontrols[0], w, w->name); | |
f0fba2ad | 399 | ret = snd_ctl_add(codec->card->snd_card, kcontrol); |
2b97eabc RP |
400 | if (ret < 0) |
401 | goto err; | |
402 | ||
403 | list_for_each_entry(path, &w->sources, list_sink) | |
404 | path->kcontrol = kcontrol; | |
405 | ||
406 | return ret; | |
407 | ||
408 | err: | |
409 | printk(KERN_ERR "asoc: failed to add kcontrol %s\n", w->name); | |
410 | return ret; | |
411 | } | |
412 | ||
413 | /* create new dapm volume control */ | |
414 | static int dapm_new_pga(struct snd_soc_codec *codec, | |
415 | struct snd_soc_dapm_widget *w) | |
416 | { | |
a6c65736 MB |
417 | if (w->num_kcontrols) |
418 | pr_err("asoc: PGA controls not supported: '%s'\n", w->name); | |
2b97eabc | 419 | |
a6c65736 | 420 | return 0; |
2b97eabc RP |
421 | } |
422 | ||
423 | /* reset 'walked' bit for each dapm path */ | |
424 | static inline void dapm_clear_walk(struct snd_soc_codec *codec) | |
425 | { | |
426 | struct snd_soc_dapm_path *p; | |
427 | ||
428 | list_for_each_entry(p, &codec->dapm_paths, list) | |
429 | p->walked = 0; | |
430 | } | |
431 | ||
9949788b MB |
432 | /* We implement power down on suspend by checking the power state of |
433 | * the ALSA card - when we are suspending the ALSA state for the card | |
434 | * is set to D3. | |
435 | */ | |
436 | static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget) | |
437 | { | |
f0fba2ad | 438 | int level = snd_power_get_state(widget->codec->card->snd_card); |
9949788b | 439 | |
f0fba2ad | 440 | switch (level) { |
9949788b MB |
441 | case SNDRV_CTL_POWER_D3hot: |
442 | case SNDRV_CTL_POWER_D3cold: | |
1547aba9 MB |
443 | if (widget->ignore_suspend) |
444 | pr_debug("%s ignoring suspend\n", widget->name); | |
445 | return widget->ignore_suspend; | |
9949788b MB |
446 | default: |
447 | return 1; | |
448 | } | |
449 | } | |
450 | ||
2b97eabc RP |
451 | /* |
452 | * Recursively check for a completed path to an active or physically connected | |
453 | * output widget. Returns number of complete paths. | |
454 | */ | |
455 | static int is_connected_output_ep(struct snd_soc_dapm_widget *widget) | |
456 | { | |
457 | struct snd_soc_dapm_path *path; | |
458 | int con = 0; | |
459 | ||
246d0a17 MB |
460 | if (widget->id == snd_soc_dapm_supply) |
461 | return 0; | |
462 | ||
010ff262 MB |
463 | switch (widget->id) { |
464 | case snd_soc_dapm_adc: | |
465 | case snd_soc_dapm_aif_out: | |
466 | if (widget->active) | |
9949788b | 467 | return snd_soc_dapm_suspend_check(widget); |
010ff262 MB |
468 | default: |
469 | break; | |
470 | } | |
2b97eabc RP |
471 | |
472 | if (widget->connected) { | |
473 | /* connected pin ? */ | |
474 | if (widget->id == snd_soc_dapm_output && !widget->ext) | |
9949788b | 475 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
476 | |
477 | /* connected jack or spk ? */ | |
478 | if (widget->id == snd_soc_dapm_hp || widget->id == snd_soc_dapm_spk || | |
eaeae5d9 | 479 | (widget->id == snd_soc_dapm_line && !list_empty(&widget->sources))) |
9949788b | 480 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
481 | } |
482 | ||
483 | list_for_each_entry(path, &widget->sinks, list_source) { | |
484 | if (path->walked) | |
485 | continue; | |
486 | ||
487 | if (path->sink && path->connect) { | |
488 | path->walked = 1; | |
489 | con += is_connected_output_ep(path->sink); | |
490 | } | |
491 | } | |
492 | ||
493 | return con; | |
494 | } | |
495 | ||
496 | /* | |
497 | * Recursively check for a completed path to an active or physically connected | |
498 | * input widget. Returns number of complete paths. | |
499 | */ | |
500 | static int is_connected_input_ep(struct snd_soc_dapm_widget *widget) | |
501 | { | |
502 | struct snd_soc_dapm_path *path; | |
503 | int con = 0; | |
504 | ||
246d0a17 MB |
505 | if (widget->id == snd_soc_dapm_supply) |
506 | return 0; | |
507 | ||
2b97eabc | 508 | /* active stream ? */ |
010ff262 MB |
509 | switch (widget->id) { |
510 | case snd_soc_dapm_dac: | |
511 | case snd_soc_dapm_aif_in: | |
512 | if (widget->active) | |
9949788b | 513 | return snd_soc_dapm_suspend_check(widget); |
010ff262 MB |
514 | default: |
515 | break; | |
516 | } | |
2b97eabc RP |
517 | |
518 | if (widget->connected) { | |
519 | /* connected pin ? */ | |
520 | if (widget->id == snd_soc_dapm_input && !widget->ext) | |
9949788b | 521 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
522 | |
523 | /* connected VMID/Bias for lower pops */ | |
524 | if (widget->id == snd_soc_dapm_vmid) | |
9949788b | 525 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
526 | |
527 | /* connected jack ? */ | |
eaeae5d9 PU |
528 | if (widget->id == snd_soc_dapm_mic || |
529 | (widget->id == snd_soc_dapm_line && !list_empty(&widget->sinks))) | |
9949788b | 530 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
531 | } |
532 | ||
533 | list_for_each_entry(path, &widget->sources, list_sink) { | |
534 | if (path->walked) | |
535 | continue; | |
536 | ||
537 | if (path->source && path->connect) { | |
538 | path->walked = 1; | |
539 | con += is_connected_input_ep(path->source); | |
540 | } | |
541 | } | |
542 | ||
543 | return con; | |
544 | } | |
545 | ||
e2be2ccf JN |
546 | /* |
547 | * Handler for generic register modifier widget. | |
548 | */ | |
549 | int dapm_reg_event(struct snd_soc_dapm_widget *w, | |
550 | struct snd_kcontrol *kcontrol, int event) | |
551 | { | |
552 | unsigned int val; | |
553 | ||
554 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
555 | val = w->on_val; | |
556 | else | |
557 | val = w->off_val; | |
558 | ||
559 | snd_soc_update_bits(w->codec, -(w->reg + 1), | |
560 | w->mask << w->shift, val << w->shift); | |
561 | ||
562 | return 0; | |
563 | } | |
11589418 | 564 | EXPORT_SYMBOL_GPL(dapm_reg_event); |
e2be2ccf | 565 | |
025756ec MB |
566 | /* Standard power change method, used to apply power changes to most |
567 | * widgets. | |
568 | */ | |
569 | static int dapm_generic_apply_power(struct snd_soc_dapm_widget *w) | |
570 | { | |
571 | int ret; | |
572 | ||
573 | /* call any power change event handlers */ | |
574 | if (w->event) | |
575 | pr_debug("power %s event for %s flags %x\n", | |
576 | w->power ? "on" : "off", | |
577 | w->name, w->event_flags); | |
578 | ||
579 | /* power up pre event */ | |
580 | if (w->power && w->event && | |
581 | (w->event_flags & SND_SOC_DAPM_PRE_PMU)) { | |
582 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMU); | |
583 | if (ret < 0) | |
584 | return ret; | |
585 | } | |
586 | ||
587 | /* power down pre event */ | |
588 | if (!w->power && w->event && | |
589 | (w->event_flags & SND_SOC_DAPM_PRE_PMD)) { | |
590 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMD); | |
591 | if (ret < 0) | |
592 | return ret; | |
593 | } | |
594 | ||
025756ec MB |
595 | dapm_update_bits(w); |
596 | ||
025756ec MB |
597 | /* power up post event */ |
598 | if (w->power && w->event && | |
599 | (w->event_flags & SND_SOC_DAPM_POST_PMU)) { | |
600 | ret = w->event(w, | |
601 | NULL, SND_SOC_DAPM_POST_PMU); | |
602 | if (ret < 0) | |
603 | return ret; | |
604 | } | |
605 | ||
606 | /* power down post event */ | |
607 | if (!w->power && w->event && | |
608 | (w->event_flags & SND_SOC_DAPM_POST_PMD)) { | |
609 | ret = w->event(w, NULL, SND_SOC_DAPM_POST_PMD); | |
610 | if (ret < 0) | |
611 | return ret; | |
612 | } | |
613 | ||
614 | return 0; | |
615 | } | |
616 | ||
cd0f2d47 MB |
617 | /* Generic check to see if a widget should be powered. |
618 | */ | |
619 | static int dapm_generic_check_power(struct snd_soc_dapm_widget *w) | |
620 | { | |
621 | int in, out; | |
622 | ||
623 | in = is_connected_input_ep(w); | |
624 | dapm_clear_walk(w->codec); | |
625 | out = is_connected_output_ep(w); | |
626 | dapm_clear_walk(w->codec); | |
627 | return out != 0 && in != 0; | |
628 | } | |
629 | ||
6ea31b9f MB |
630 | /* Check to see if an ADC has power */ |
631 | static int dapm_adc_check_power(struct snd_soc_dapm_widget *w) | |
632 | { | |
633 | int in; | |
634 | ||
635 | if (w->active) { | |
636 | in = is_connected_input_ep(w); | |
637 | dapm_clear_walk(w->codec); | |
638 | return in != 0; | |
639 | } else { | |
640 | return dapm_generic_check_power(w); | |
641 | } | |
642 | } | |
643 | ||
644 | /* Check to see if a DAC has power */ | |
645 | static int dapm_dac_check_power(struct snd_soc_dapm_widget *w) | |
646 | { | |
647 | int out; | |
648 | ||
649 | if (w->active) { | |
650 | out = is_connected_output_ep(w); | |
651 | dapm_clear_walk(w->codec); | |
652 | return out != 0; | |
653 | } else { | |
654 | return dapm_generic_check_power(w); | |
655 | } | |
656 | } | |
657 | ||
246d0a17 MB |
658 | /* Check to see if a power supply is needed */ |
659 | static int dapm_supply_check_power(struct snd_soc_dapm_widget *w) | |
660 | { | |
661 | struct snd_soc_dapm_path *path; | |
662 | int power = 0; | |
663 | ||
664 | /* Check if one of our outputs is connected */ | |
665 | list_for_each_entry(path, &w->sinks, list_source) { | |
215edda3 MB |
666 | if (path->connected && |
667 | !path->connected(path->source, path->sink)) | |
668 | continue; | |
669 | ||
246d0a17 MB |
670 | if (path->sink && path->sink->power_check && |
671 | path->sink->power_check(path->sink)) { | |
672 | power = 1; | |
673 | break; | |
674 | } | |
675 | } | |
676 | ||
677 | dapm_clear_walk(w->codec); | |
678 | ||
679 | return power; | |
680 | } | |
681 | ||
38357ab2 MB |
682 | static int dapm_seq_compare(struct snd_soc_dapm_widget *a, |
683 | struct snd_soc_dapm_widget *b, | |
684 | int sort[]) | |
42aa3418 | 685 | { |
38357ab2 MB |
686 | if (sort[a->id] != sort[b->id]) |
687 | return sort[a->id] - sort[b->id]; | |
b22ead2a MB |
688 | if (a->reg != b->reg) |
689 | return a->reg - b->reg; | |
bcbb2433 MB |
690 | if (a->codec != b->codec) |
691 | return (unsigned long)a->codec - (unsigned long)b->codec; | |
42aa3418 | 692 | |
38357ab2 MB |
693 | return 0; |
694 | } | |
42aa3418 | 695 | |
38357ab2 MB |
696 | /* Insert a widget in order into a DAPM power sequence. */ |
697 | static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget, | |
698 | struct list_head *list, | |
699 | int sort[]) | |
700 | { | |
701 | struct snd_soc_dapm_widget *w; | |
702 | ||
703 | list_for_each_entry(w, list, power_list) | |
704 | if (dapm_seq_compare(new_widget, w, sort) < 0) { | |
705 | list_add_tail(&new_widget->power_list, &w->power_list); | |
706 | return; | |
707 | } | |
708 | ||
709 | list_add_tail(&new_widget->power_list, list); | |
710 | } | |
711 | ||
b22ead2a MB |
712 | /* Apply the coalesced changes from a DAPM sequence */ |
713 | static void dapm_seq_run_coalesced(struct snd_soc_codec *codec, | |
714 | struct list_head *pending) | |
163cac06 MB |
715 | { |
716 | struct snd_soc_dapm_widget *w; | |
81628103 | 717 | int reg, power, ret; |
b22ead2a MB |
718 | unsigned int value = 0; |
719 | unsigned int mask = 0; | |
720 | unsigned int cur_mask; | |
721 | ||
722 | reg = list_first_entry(pending, struct snd_soc_dapm_widget, | |
723 | power_list)->reg; | |
724 | ||
725 | list_for_each_entry(w, pending, power_list) { | |
726 | cur_mask = 1 << w->shift; | |
727 | BUG_ON(reg != w->reg); | |
728 | ||
729 | if (w->invert) | |
730 | power = !w->power; | |
731 | else | |
732 | power = w->power; | |
733 | ||
734 | mask |= cur_mask; | |
735 | if (power) | |
736 | value |= cur_mask; | |
737 | ||
738 | pop_dbg(codec->pop_time, | |
739 | "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n", | |
740 | w->name, reg, value, mask); | |
81628103 MB |
741 | |
742 | /* power up pre event */ | |
743 | if (w->power && w->event && | |
744 | (w->event_flags & SND_SOC_DAPM_PRE_PMU)) { | |
745 | pop_dbg(codec->pop_time, "pop test : %s PRE_PMU\n", | |
746 | w->name); | |
747 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMU); | |
42aa3418 | 748 | if (ret < 0) |
81628103 MB |
749 | pr_err("%s: pre event failed: %d\n", |
750 | w->name, ret); | |
751 | } | |
752 | ||
753 | /* power down pre event */ | |
754 | if (!w->power && w->event && | |
755 | (w->event_flags & SND_SOC_DAPM_PRE_PMD)) { | |
756 | pop_dbg(codec->pop_time, "pop test : %s PRE_PMD\n", | |
757 | w->name); | |
758 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMD); | |
42aa3418 | 759 | if (ret < 0) |
81628103 MB |
760 | pr_err("%s: pre event failed: %d\n", |
761 | w->name, ret); | |
42aa3418 | 762 | } |
81628103 MB |
763 | } |
764 | ||
765 | if (reg >= 0) { | |
766 | pop_dbg(codec->pop_time, | |
767 | "pop test : Applying 0x%x/0x%x to %x in %dms\n", | |
768 | value, mask, reg, codec->pop_time); | |
769 | pop_wait(codec->pop_time); | |
770 | snd_soc_update_bits(codec, reg, mask, value); | |
b22ead2a MB |
771 | } |
772 | ||
81628103 MB |
773 | list_for_each_entry(w, pending, power_list) { |
774 | /* power up post event */ | |
775 | if (w->power && w->event && | |
776 | (w->event_flags & SND_SOC_DAPM_POST_PMU)) { | |
777 | pop_dbg(codec->pop_time, "pop test : %s POST_PMU\n", | |
778 | w->name); | |
42aa3418 MB |
779 | ret = w->event(w, |
780 | NULL, SND_SOC_DAPM_POST_PMU); | |
781 | if (ret < 0) | |
81628103 MB |
782 | pr_err("%s: post event failed: %d\n", |
783 | w->name, ret); | |
784 | } | |
785 | ||
786 | /* power down post event */ | |
787 | if (!w->power && w->event && | |
788 | (w->event_flags & SND_SOC_DAPM_POST_PMD)) { | |
789 | pop_dbg(codec->pop_time, "pop test : %s POST_PMD\n", | |
790 | w->name); | |
791 | ret = w->event(w, NULL, SND_SOC_DAPM_POST_PMD); | |
42aa3418 | 792 | if (ret < 0) |
81628103 MB |
793 | pr_err("%s: post event failed: %d\n", |
794 | w->name, ret); | |
42aa3418 | 795 | } |
81628103 | 796 | } |
b22ead2a | 797 | } |
42aa3418 | 798 | |
b22ead2a MB |
799 | /* Apply a DAPM power sequence. |
800 | * | |
801 | * We walk over a pre-sorted list of widgets to apply power to. In | |
802 | * order to minimise the number of writes to the device required | |
803 | * multiple widgets will be updated in a single write where possible. | |
804 | * Currently anything that requires more than a single write is not | |
805 | * handled. | |
806 | */ | |
807 | static void dapm_seq_run(struct snd_soc_codec *codec, struct list_head *list, | |
808 | int event, int sort[]) | |
809 | { | |
810 | struct snd_soc_dapm_widget *w, *n; | |
811 | LIST_HEAD(pending); | |
812 | int cur_sort = -1; | |
813 | int cur_reg = SND_SOC_NOPM; | |
163cac06 MB |
814 | int ret; |
815 | ||
b22ead2a MB |
816 | list_for_each_entry_safe(w, n, list, power_list) { |
817 | ret = 0; | |
818 | ||
819 | /* Do we need to apply any queued changes? */ | |
820 | if (sort[w->id] != cur_sort || w->reg != cur_reg) { | |
821 | if (!list_empty(&pending)) | |
822 | dapm_seq_run_coalesced(codec, &pending); | |
823 | ||
824 | INIT_LIST_HEAD(&pending); | |
825 | cur_sort = -1; | |
826 | cur_reg = SND_SOC_NOPM; | |
827 | } | |
828 | ||
163cac06 MB |
829 | switch (w->id) { |
830 | case snd_soc_dapm_pre: | |
831 | if (!w->event) | |
b22ead2a MB |
832 | list_for_each_entry_safe_continue(w, n, list, |
833 | power_list); | |
163cac06 | 834 | |
b22ead2a | 835 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
836 | ret = w->event(w, |
837 | NULL, SND_SOC_DAPM_PRE_PMU); | |
b22ead2a | 838 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
839 | ret = w->event(w, |
840 | NULL, SND_SOC_DAPM_PRE_PMD); | |
163cac06 MB |
841 | break; |
842 | ||
843 | case snd_soc_dapm_post: | |
844 | if (!w->event) | |
b22ead2a MB |
845 | list_for_each_entry_safe_continue(w, n, list, |
846 | power_list); | |
163cac06 | 847 | |
b22ead2a | 848 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
849 | ret = w->event(w, |
850 | NULL, SND_SOC_DAPM_POST_PMU); | |
b22ead2a | 851 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
852 | ret = w->event(w, |
853 | NULL, SND_SOC_DAPM_POST_PMD); | |
163cac06 MB |
854 | break; |
855 | ||
b22ead2a MB |
856 | case snd_soc_dapm_input: |
857 | case snd_soc_dapm_output: | |
858 | case snd_soc_dapm_hp: | |
859 | case snd_soc_dapm_mic: | |
860 | case snd_soc_dapm_line: | |
861 | case snd_soc_dapm_spk: | |
862 | /* No register support currently */ | |
163cac06 | 863 | ret = dapm_generic_apply_power(w); |
163cac06 | 864 | break; |
b22ead2a MB |
865 | |
866 | default: | |
81628103 MB |
867 | /* Queue it up for application */ |
868 | cur_sort = sort[w->id]; | |
869 | cur_reg = w->reg; | |
870 | list_move(&w->power_list, &pending); | |
871 | break; | |
163cac06 | 872 | } |
b22ead2a MB |
873 | |
874 | if (ret < 0) | |
875 | pr_err("Failed to apply widget power: %d\n", | |
876 | ret); | |
6ea31b9f | 877 | } |
b22ead2a MB |
878 | |
879 | if (!list_empty(&pending)) | |
880 | dapm_seq_run_coalesced(codec, &pending); | |
42aa3418 MB |
881 | } |
882 | ||
2b97eabc RP |
883 | /* |
884 | * Scan each dapm widget for complete audio path. | |
885 | * A complete path is a route that has valid endpoints i.e.:- | |
886 | * | |
887 | * o DAC to output pin. | |
888 | * o Input Pin to ADC. | |
889 | * o Input pin to Output pin (bypass, sidetone) | |
890 | * o DAC to ADC (loopback). | |
891 | */ | |
d9c96cf3 | 892 | static int dapm_power_widgets(struct snd_soc_codec *codec, int event) |
2b97eabc | 893 | { |
f0fba2ad | 894 | struct snd_soc_card *card = codec->card; |
2b97eabc | 895 | struct snd_soc_dapm_widget *w; |
291f3bbc MB |
896 | LIST_HEAD(up_list); |
897 | LIST_HEAD(down_list); | |
6d3ddc81 | 898 | int ret = 0; |
38357ab2 | 899 | int power; |
452c5eaa | 900 | int sys_power = 0; |
6d3ddc81 | 901 | |
6d3ddc81 MB |
902 | /* Check which widgets we need to power and store them in |
903 | * lists indicating if they should be powered up or down. | |
904 | */ | |
905 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
906 | switch (w->id) { | |
907 | case snd_soc_dapm_pre: | |
291f3bbc | 908 | dapm_seq_insert(w, &down_list, dapm_down_seq); |
6d3ddc81 MB |
909 | break; |
910 | case snd_soc_dapm_post: | |
291f3bbc | 911 | dapm_seq_insert(w, &up_list, dapm_up_seq); |
6d3ddc81 MB |
912 | break; |
913 | ||
914 | default: | |
915 | if (!w->power_check) | |
916 | continue; | |
917 | ||
9949788b | 918 | if (!w->force) |
50b6bce5 | 919 | power = w->power_check(w); |
9949788b MB |
920 | else |
921 | power = 1; | |
922 | if (power) | |
923 | sys_power = 1; | |
452c5eaa | 924 | |
6d3ddc81 MB |
925 | if (w->power == power) |
926 | continue; | |
927 | ||
928 | if (power) | |
291f3bbc | 929 | dapm_seq_insert(w, &up_list, dapm_up_seq); |
6d3ddc81 | 930 | else |
291f3bbc | 931 | dapm_seq_insert(w, &down_list, dapm_down_seq); |
6d3ddc81 MB |
932 | |
933 | w->power = power; | |
934 | break; | |
935 | } | |
2b97eabc RP |
936 | } |
937 | ||
b14b76a5 MB |
938 | /* If there are no DAPM widgets then try to figure out power from the |
939 | * event type. | |
940 | */ | |
941 | if (list_empty(&codec->dapm_widgets)) { | |
942 | switch (event) { | |
943 | case SND_SOC_DAPM_STREAM_START: | |
944 | case SND_SOC_DAPM_STREAM_RESUME: | |
945 | sys_power = 1; | |
946 | break; | |
50b6bce5 MB |
947 | case SND_SOC_DAPM_STREAM_SUSPEND: |
948 | sys_power = 0; | |
949 | break; | |
b14b76a5 | 950 | case SND_SOC_DAPM_STREAM_NOP: |
a96ca338 MB |
951 | switch (codec->bias_level) { |
952 | case SND_SOC_BIAS_STANDBY: | |
953 | case SND_SOC_BIAS_OFF: | |
954 | sys_power = 0; | |
955 | break; | |
956 | default: | |
957 | sys_power = 1; | |
958 | break; | |
959 | } | |
50b6bce5 | 960 | break; |
b14b76a5 MB |
961 | default: |
962 | break; | |
963 | } | |
964 | } | |
965 | ||
a96ca338 | 966 | if (sys_power && codec->bias_level == SND_SOC_BIAS_OFF) { |
f0fba2ad | 967 | ret = snd_soc_dapm_set_bias_level(card, codec, |
a96ca338 MB |
968 | SND_SOC_BIAS_STANDBY); |
969 | if (ret != 0) | |
970 | pr_err("Failed to turn on bias: %d\n", ret); | |
971 | } | |
972 | ||
452c5eaa MB |
973 | /* If we're changing to all on or all off then prepare */ |
974 | if ((sys_power && codec->bias_level == SND_SOC_BIAS_STANDBY) || | |
975 | (!sys_power && codec->bias_level == SND_SOC_BIAS_ON)) { | |
f0fba2ad | 976 | ret = snd_soc_dapm_set_bias_level(card, codec, SND_SOC_BIAS_PREPARE); |
452c5eaa MB |
977 | if (ret != 0) |
978 | pr_err("Failed to prepare bias: %d\n", ret); | |
979 | } | |
980 | ||
6d3ddc81 | 981 | /* Power down widgets first; try to avoid amplifying pops. */ |
291f3bbc | 982 | dapm_seq_run(codec, &down_list, event, dapm_down_seq); |
2b97eabc | 983 | |
6d3ddc81 | 984 | /* Now power up. */ |
291f3bbc | 985 | dapm_seq_run(codec, &up_list, event, dapm_up_seq); |
2b97eabc | 986 | |
452c5eaa MB |
987 | /* If we just powered the last thing off drop to standby bias */ |
988 | if (codec->bias_level == SND_SOC_BIAS_PREPARE && !sys_power) { | |
f0fba2ad | 989 | ret = snd_soc_dapm_set_bias_level(card, codec, SND_SOC_BIAS_STANDBY); |
452c5eaa MB |
990 | if (ret != 0) |
991 | pr_err("Failed to apply standby bias: %d\n", ret); | |
992 | } | |
993 | ||
a96ca338 MB |
994 | /* If we're in standby and can support bias off then do that */ |
995 | if (codec->bias_level == SND_SOC_BIAS_STANDBY && | |
996 | codec->idle_bias_off) { | |
f0fba2ad | 997 | ret = snd_soc_dapm_set_bias_level(card, codec, SND_SOC_BIAS_OFF); |
a96ca338 MB |
998 | if (ret != 0) |
999 | pr_err("Failed to turn off bias: %d\n", ret); | |
1000 | } | |
1001 | ||
452c5eaa MB |
1002 | /* If we just powered up then move to active bias */ |
1003 | if (codec->bias_level == SND_SOC_BIAS_PREPARE && sys_power) { | |
f0fba2ad | 1004 | ret = snd_soc_dapm_set_bias_level(card, codec, SND_SOC_BIAS_ON); |
452c5eaa MB |
1005 | if (ret != 0) |
1006 | pr_err("Failed to apply active bias: %d\n", ret); | |
1007 | } | |
1008 | ||
cb507e7e MB |
1009 | pop_dbg(codec->pop_time, "DAPM sequencing finished, waiting %dms\n", |
1010 | codec->pop_time); | |
69224719 | 1011 | pop_wait(codec->pop_time); |
cb507e7e | 1012 | |
42aa3418 | 1013 | return 0; |
2b97eabc RP |
1014 | } |
1015 | ||
79fb9387 MB |
1016 | #ifdef CONFIG_DEBUG_FS |
1017 | static int dapm_widget_power_open_file(struct inode *inode, struct file *file) | |
1018 | { | |
1019 | file->private_data = inode->i_private; | |
1020 | return 0; | |
1021 | } | |
1022 | ||
1023 | static ssize_t dapm_widget_power_read_file(struct file *file, | |
1024 | char __user *user_buf, | |
1025 | size_t count, loff_t *ppos) | |
1026 | { | |
1027 | struct snd_soc_dapm_widget *w = file->private_data; | |
1028 | char *buf; | |
1029 | int in, out; | |
1030 | ssize_t ret; | |
1031 | struct snd_soc_dapm_path *p = NULL; | |
1032 | ||
1033 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); | |
1034 | if (!buf) | |
1035 | return -ENOMEM; | |
1036 | ||
1037 | in = is_connected_input_ep(w); | |
1038 | dapm_clear_walk(w->codec); | |
1039 | out = is_connected_output_ep(w); | |
1040 | dapm_clear_walk(w->codec); | |
1041 | ||
d033c36a | 1042 | ret = snprintf(buf, PAGE_SIZE, "%s: %s in %d out %d", |
79fb9387 MB |
1043 | w->name, w->power ? "On" : "Off", in, out); |
1044 | ||
d033c36a MB |
1045 | if (w->reg >= 0) |
1046 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
1047 | " - R%d(0x%x) bit %d", | |
1048 | w->reg, w->reg, w->shift); | |
1049 | ||
1050 | ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n"); | |
1051 | ||
3eef08ba MB |
1052 | if (w->sname) |
1053 | ret += snprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n", | |
1054 | w->sname, | |
1055 | w->active ? "active" : "inactive"); | |
79fb9387 MB |
1056 | |
1057 | list_for_each_entry(p, &w->sources, list_sink) { | |
215edda3 MB |
1058 | if (p->connected && !p->connected(w, p->sink)) |
1059 | continue; | |
1060 | ||
79fb9387 MB |
1061 | if (p->connect) |
1062 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
1063 | " in %s %s\n", | |
1064 | p->name ? p->name : "static", | |
1065 | p->source->name); | |
1066 | } | |
1067 | list_for_each_entry(p, &w->sinks, list_source) { | |
215edda3 MB |
1068 | if (p->connected && !p->connected(w, p->sink)) |
1069 | continue; | |
1070 | ||
79fb9387 MB |
1071 | if (p->connect) |
1072 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
1073 | " out %s %s\n", | |
1074 | p->name ? p->name : "static", | |
1075 | p->sink->name); | |
1076 | } | |
1077 | ||
1078 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); | |
1079 | ||
1080 | kfree(buf); | |
1081 | return ret; | |
1082 | } | |
1083 | ||
1084 | static const struct file_operations dapm_widget_power_fops = { | |
1085 | .open = dapm_widget_power_open_file, | |
1086 | .read = dapm_widget_power_read_file, | |
6038f373 | 1087 | .llseek = default_llseek, |
79fb9387 MB |
1088 | }; |
1089 | ||
1090 | void snd_soc_dapm_debugfs_init(struct snd_soc_codec *codec) | |
1091 | { | |
1092 | struct snd_soc_dapm_widget *w; | |
1093 | struct dentry *d; | |
1094 | ||
1095 | if (!codec->debugfs_dapm) | |
1096 | return; | |
1097 | ||
1098 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
1099 | if (!w->name) | |
1100 | continue; | |
1101 | ||
1102 | d = debugfs_create_file(w->name, 0444, | |
1103 | codec->debugfs_dapm, w, | |
1104 | &dapm_widget_power_fops); | |
1105 | if (!d) | |
1106 | printk(KERN_WARNING | |
1107 | "ASoC: Failed to create %s debugfs file\n", | |
1108 | w->name); | |
1109 | } | |
1110 | } | |
1111 | #else | |
1112 | void snd_soc_dapm_debugfs_init(struct snd_soc_codec *codec) | |
1113 | { | |
1114 | } | |
1115 | #endif | |
1116 | ||
2b97eabc | 1117 | /* test and update the power status of a mux widget */ |
d9c96cf3 | 1118 | static int dapm_mux_update_power(struct snd_soc_dapm_widget *widget, |
3a65577d MB |
1119 | struct snd_kcontrol *kcontrol, int change, |
1120 | int mux, struct soc_enum *e) | |
2b97eabc RP |
1121 | { |
1122 | struct snd_soc_dapm_path *path; | |
1123 | int found = 0; | |
1124 | ||
eff317d0 PU |
1125 | if (widget->id != snd_soc_dapm_mux && |
1126 | widget->id != snd_soc_dapm_value_mux) | |
2b97eabc RP |
1127 | return -ENODEV; |
1128 | ||
3a65577d | 1129 | if (!change) |
2b97eabc RP |
1130 | return 0; |
1131 | ||
1132 | /* find dapm widget path assoc with kcontrol */ | |
1133 | list_for_each_entry(path, &widget->codec->dapm_paths, list) { | |
1134 | if (path->kcontrol != kcontrol) | |
1135 | continue; | |
1136 | ||
cb01e2b9 | 1137 | if (!path->name || !e->texts[mux]) |
2b97eabc RP |
1138 | continue; |
1139 | ||
1140 | found = 1; | |
1141 | /* we now need to match the string in the enum to the path */ | |
cb01e2b9 | 1142 | if (!(strcmp(path->name, e->texts[mux]))) |
2b97eabc RP |
1143 | path->connect = 1; /* new connection */ |
1144 | else | |
1145 | path->connect = 0; /* old connection must be powered down */ | |
1146 | } | |
1147 | ||
b91b8fa0 | 1148 | if (found) |
2b97eabc RP |
1149 | dapm_power_widgets(widget->codec, SND_SOC_DAPM_STREAM_NOP); |
1150 | ||
1151 | return 0; | |
1152 | } | |
2b97eabc | 1153 | |
1b075e3f | 1154 | /* test and update the power status of a mixer or switch widget */ |
d9c96cf3 | 1155 | static int dapm_mixer_update_power(struct snd_soc_dapm_widget *widget, |
283375ce | 1156 | struct snd_kcontrol *kcontrol, int connect) |
2b97eabc RP |
1157 | { |
1158 | struct snd_soc_dapm_path *path; | |
1159 | int found = 0; | |
1160 | ||
1b075e3f | 1161 | if (widget->id != snd_soc_dapm_mixer && |
ca9c1aae | 1162 | widget->id != snd_soc_dapm_mixer_named_ctl && |
1b075e3f | 1163 | widget->id != snd_soc_dapm_switch) |
2b97eabc RP |
1164 | return -ENODEV; |
1165 | ||
2b97eabc RP |
1166 | /* find dapm widget path assoc with kcontrol */ |
1167 | list_for_each_entry(path, &widget->codec->dapm_paths, list) { | |
1168 | if (path->kcontrol != kcontrol) | |
1169 | continue; | |
1170 | ||
1171 | /* found, now check type */ | |
1172 | found = 1; | |
283375ce | 1173 | path->connect = connect; |
2b97eabc RP |
1174 | break; |
1175 | } | |
1176 | ||
b91b8fa0 | 1177 | if (found) |
2b97eabc RP |
1178 | dapm_power_widgets(widget->codec, SND_SOC_DAPM_STREAM_NOP); |
1179 | ||
1180 | return 0; | |
1181 | } | |
2b97eabc RP |
1182 | |
1183 | /* show dapm widget status in sys fs */ | |
1184 | static ssize_t dapm_widget_show(struct device *dev, | |
1185 | struct device_attribute *attr, char *buf) | |
1186 | { | |
f0fba2ad LG |
1187 | struct snd_soc_pcm_runtime *rtd = |
1188 | container_of(dev, struct snd_soc_pcm_runtime, dev); | |
1189 | struct snd_soc_codec *codec =rtd->codec; | |
2b97eabc RP |
1190 | struct snd_soc_dapm_widget *w; |
1191 | int count = 0; | |
1192 | char *state = "not set"; | |
1193 | ||
1194 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
1195 | ||
1196 | /* only display widgets that burnm power */ | |
1197 | switch (w->id) { | |
1198 | case snd_soc_dapm_hp: | |
1199 | case snd_soc_dapm_mic: | |
1200 | case snd_soc_dapm_spk: | |
1201 | case snd_soc_dapm_line: | |
1202 | case snd_soc_dapm_micbias: | |
1203 | case snd_soc_dapm_dac: | |
1204 | case snd_soc_dapm_adc: | |
1205 | case snd_soc_dapm_pga: | |
1206 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1207 | case snd_soc_dapm_mixer_named_ctl: |
246d0a17 | 1208 | case snd_soc_dapm_supply: |
2b97eabc RP |
1209 | if (w->name) |
1210 | count += sprintf(buf + count, "%s: %s\n", | |
1211 | w->name, w->power ? "On":"Off"); | |
1212 | break; | |
1213 | default: | |
1214 | break; | |
1215 | } | |
1216 | } | |
1217 | ||
0be9898a MB |
1218 | switch (codec->bias_level) { |
1219 | case SND_SOC_BIAS_ON: | |
1220 | state = "On"; | |
2b97eabc | 1221 | break; |
0be9898a MB |
1222 | case SND_SOC_BIAS_PREPARE: |
1223 | state = "Prepare"; | |
2b97eabc | 1224 | break; |
0be9898a MB |
1225 | case SND_SOC_BIAS_STANDBY: |
1226 | state = "Standby"; | |
2b97eabc | 1227 | break; |
0be9898a MB |
1228 | case SND_SOC_BIAS_OFF: |
1229 | state = "Off"; | |
2b97eabc RP |
1230 | break; |
1231 | } | |
1232 | count += sprintf(buf + count, "PM State: %s\n", state); | |
1233 | ||
1234 | return count; | |
1235 | } | |
1236 | ||
1237 | static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL); | |
1238 | ||
1239 | int snd_soc_dapm_sys_add(struct device *dev) | |
1240 | { | |
12ef193d | 1241 | return device_create_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1242 | } |
1243 | ||
1244 | static void snd_soc_dapm_sys_remove(struct device *dev) | |
1245 | { | |
aef90843 | 1246 | device_remove_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1247 | } |
1248 | ||
1249 | /* free all dapm widgets and resources */ | |
d9c96cf3 | 1250 | static void dapm_free_widgets(struct snd_soc_codec *codec) |
2b97eabc RP |
1251 | { |
1252 | struct snd_soc_dapm_widget *w, *next_w; | |
1253 | struct snd_soc_dapm_path *p, *next_p; | |
1254 | ||
1255 | list_for_each_entry_safe(w, next_w, &codec->dapm_widgets, list) { | |
1256 | list_del(&w->list); | |
1257 | kfree(w); | |
1258 | } | |
1259 | ||
1260 | list_for_each_entry_safe(p, next_p, &codec->dapm_paths, list) { | |
1261 | list_del(&p->list); | |
1262 | kfree(p->long_name); | |
1263 | kfree(p); | |
1264 | } | |
1265 | } | |
1266 | ||
a5302181 | 1267 | static int snd_soc_dapm_set_pin(struct snd_soc_codec *codec, |
1649923d | 1268 | const char *pin, int status) |
a5302181 LG |
1269 | { |
1270 | struct snd_soc_dapm_widget *w; | |
1271 | ||
1272 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
1273 | if (!strcmp(w->name, pin)) { | |
c1286b86 | 1274 | pr_debug("dapm: %s: pin %s\n", codec->name, pin); |
a5302181 | 1275 | w->connected = status; |
5b9e87cc MB |
1276 | /* Allow disabling of forced pins */ |
1277 | if (status == 0) | |
1278 | w->force = 0; | |
a5302181 LG |
1279 | return 0; |
1280 | } | |
1281 | } | |
1282 | ||
c1286b86 | 1283 | pr_err("dapm: %s: configuring unknown pin %s\n", codec->name, pin); |
a5302181 LG |
1284 | return -EINVAL; |
1285 | } | |
1286 | ||
2b97eabc | 1287 | /** |
a5302181 | 1288 | * snd_soc_dapm_sync - scan and power dapm paths |
2b97eabc RP |
1289 | * @codec: audio codec |
1290 | * | |
1291 | * Walks all dapm audio paths and powers widgets according to their | |
1292 | * stream or path usage. | |
1293 | * | |
1294 | * Returns 0 for success. | |
1295 | */ | |
a5302181 | 1296 | int snd_soc_dapm_sync(struct snd_soc_codec *codec) |
2b97eabc | 1297 | { |
b91b8fa0 | 1298 | return dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc | 1299 | } |
a5302181 | 1300 | EXPORT_SYMBOL_GPL(snd_soc_dapm_sync); |
2b97eabc | 1301 | |
105f1c28 | 1302 | static int snd_soc_dapm_add_route(struct snd_soc_codec *codec, |
215edda3 | 1303 | const struct snd_soc_dapm_route *route) |
2b97eabc RP |
1304 | { |
1305 | struct snd_soc_dapm_path *path; | |
1306 | struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w; | |
215edda3 MB |
1307 | const char *sink = route->sink; |
1308 | const char *control = route->control; | |
1309 | const char *source = route->source; | |
2b97eabc RP |
1310 | int ret = 0; |
1311 | ||
1312 | /* find src and dest widgets */ | |
1313 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
1314 | ||
1315 | if (!wsink && !(strcmp(w->name, sink))) { | |
1316 | wsink = w; | |
1317 | continue; | |
1318 | } | |
1319 | if (!wsource && !(strcmp(w->name, source))) { | |
1320 | wsource = w; | |
1321 | } | |
1322 | } | |
1323 | ||
1324 | if (wsource == NULL || wsink == NULL) | |
1325 | return -ENODEV; | |
1326 | ||
1327 | path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL); | |
1328 | if (!path) | |
1329 | return -ENOMEM; | |
1330 | ||
1331 | path->source = wsource; | |
1332 | path->sink = wsink; | |
215edda3 | 1333 | path->connected = route->connected; |
2b97eabc RP |
1334 | INIT_LIST_HEAD(&path->list); |
1335 | INIT_LIST_HEAD(&path->list_source); | |
1336 | INIT_LIST_HEAD(&path->list_sink); | |
1337 | ||
1338 | /* check for external widgets */ | |
1339 | if (wsink->id == snd_soc_dapm_input) { | |
1340 | if (wsource->id == snd_soc_dapm_micbias || | |
1341 | wsource->id == snd_soc_dapm_mic || | |
087d53ab RC |
1342 | wsource->id == snd_soc_dapm_line || |
1343 | wsource->id == snd_soc_dapm_output) | |
2b97eabc RP |
1344 | wsink->ext = 1; |
1345 | } | |
1346 | if (wsource->id == snd_soc_dapm_output) { | |
1347 | if (wsink->id == snd_soc_dapm_spk || | |
1348 | wsink->id == snd_soc_dapm_hp || | |
1e39221e SF |
1349 | wsink->id == snd_soc_dapm_line || |
1350 | wsink->id == snd_soc_dapm_input) | |
2b97eabc RP |
1351 | wsource->ext = 1; |
1352 | } | |
1353 | ||
1354 | /* connect static paths */ | |
1355 | if (control == NULL) { | |
1356 | list_add(&path->list, &codec->dapm_paths); | |
1357 | list_add(&path->list_sink, &wsink->sources); | |
1358 | list_add(&path->list_source, &wsource->sinks); | |
1359 | path->connect = 1; | |
1360 | return 0; | |
1361 | } | |
1362 | ||
1363 | /* connect dynamic paths */ | |
1364 | switch(wsink->id) { | |
1365 | case snd_soc_dapm_adc: | |
1366 | case snd_soc_dapm_dac: | |
1367 | case snd_soc_dapm_pga: | |
1368 | case snd_soc_dapm_input: | |
1369 | case snd_soc_dapm_output: | |
1370 | case snd_soc_dapm_micbias: | |
1371 | case snd_soc_dapm_vmid: | |
1372 | case snd_soc_dapm_pre: | |
1373 | case snd_soc_dapm_post: | |
246d0a17 | 1374 | case snd_soc_dapm_supply: |
010ff262 MB |
1375 | case snd_soc_dapm_aif_in: |
1376 | case snd_soc_dapm_aif_out: | |
2b97eabc RP |
1377 | list_add(&path->list, &codec->dapm_paths); |
1378 | list_add(&path->list_sink, &wsink->sources); | |
1379 | list_add(&path->list_source, &wsource->sinks); | |
1380 | path->connect = 1; | |
1381 | return 0; | |
1382 | case snd_soc_dapm_mux: | |
74155556 | 1383 | case snd_soc_dapm_value_mux: |
2b97eabc RP |
1384 | ret = dapm_connect_mux(codec, wsource, wsink, path, control, |
1385 | &wsink->kcontrols[0]); | |
1386 | if (ret != 0) | |
1387 | goto err; | |
1388 | break; | |
1389 | case snd_soc_dapm_switch: | |
1390 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1391 | case snd_soc_dapm_mixer_named_ctl: |
2b97eabc RP |
1392 | ret = dapm_connect_mixer(codec, wsource, wsink, path, control); |
1393 | if (ret != 0) | |
1394 | goto err; | |
1395 | break; | |
1396 | case snd_soc_dapm_hp: | |
1397 | case snd_soc_dapm_mic: | |
1398 | case snd_soc_dapm_line: | |
1399 | case snd_soc_dapm_spk: | |
1400 | list_add(&path->list, &codec->dapm_paths); | |
1401 | list_add(&path->list_sink, &wsink->sources); | |
1402 | list_add(&path->list_source, &wsource->sinks); | |
1403 | path->connect = 0; | |
1404 | return 0; | |
1405 | } | |
1406 | return 0; | |
1407 | ||
1408 | err: | |
1409 | printk(KERN_WARNING "asoc: no dapm match for %s --> %s --> %s\n", source, | |
1410 | control, sink); | |
1411 | kfree(path); | |
1412 | return ret; | |
1413 | } | |
105f1c28 | 1414 | |
105f1c28 MB |
1415 | /** |
1416 | * snd_soc_dapm_add_routes - Add routes between DAPM widgets | |
1417 | * @codec: codec | |
1418 | * @route: audio routes | |
1419 | * @num: number of routes | |
1420 | * | |
1421 | * Connects 2 dapm widgets together via a named audio path. The sink is | |
1422 | * the widget receiving the audio signal, whilst the source is the sender | |
1423 | * of the audio signal. | |
1424 | * | |
1425 | * Returns 0 for success else error. On error all resources can be freed | |
1426 | * with a call to snd_soc_card_free(). | |
1427 | */ | |
1428 | int snd_soc_dapm_add_routes(struct snd_soc_codec *codec, | |
1429 | const struct snd_soc_dapm_route *route, int num) | |
1430 | { | |
1431 | int i, ret; | |
1432 | ||
1433 | for (i = 0; i < num; i++) { | |
215edda3 | 1434 | ret = snd_soc_dapm_add_route(codec, route); |
105f1c28 MB |
1435 | if (ret < 0) { |
1436 | printk(KERN_ERR "Failed to add route %s->%s\n", | |
1437 | route->source, | |
1438 | route->sink); | |
1439 | return ret; | |
1440 | } | |
1441 | route++; | |
1442 | } | |
1443 | ||
1444 | return 0; | |
1445 | } | |
1446 | EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes); | |
1447 | ||
2b97eabc RP |
1448 | /** |
1449 | * snd_soc_dapm_new_widgets - add new dapm widgets | |
1450 | * @codec: audio codec | |
1451 | * | |
1452 | * Checks the codec for any new dapm widgets and creates them if found. | |
1453 | * | |
1454 | * Returns 0 for success. | |
1455 | */ | |
1456 | int snd_soc_dapm_new_widgets(struct snd_soc_codec *codec) | |
1457 | { | |
1458 | struct snd_soc_dapm_widget *w; | |
1459 | ||
2b97eabc RP |
1460 | list_for_each_entry(w, &codec->dapm_widgets, list) |
1461 | { | |
1462 | if (w->new) | |
1463 | continue; | |
1464 | ||
1465 | switch(w->id) { | |
1466 | case snd_soc_dapm_switch: | |
1467 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1468 | case snd_soc_dapm_mixer_named_ctl: |
b75576d7 | 1469 | w->power_check = dapm_generic_check_power; |
2b97eabc RP |
1470 | dapm_new_mixer(codec, w); |
1471 | break; | |
1472 | case snd_soc_dapm_mux: | |
2e72f8e3 | 1473 | case snd_soc_dapm_value_mux: |
b75576d7 | 1474 | w->power_check = dapm_generic_check_power; |
2b97eabc RP |
1475 | dapm_new_mux(codec, w); |
1476 | break; | |
1477 | case snd_soc_dapm_adc: | |
010ff262 | 1478 | case snd_soc_dapm_aif_out: |
b75576d7 MB |
1479 | w->power_check = dapm_adc_check_power; |
1480 | break; | |
2b97eabc | 1481 | case snd_soc_dapm_dac: |
010ff262 | 1482 | case snd_soc_dapm_aif_in: |
b75576d7 MB |
1483 | w->power_check = dapm_dac_check_power; |
1484 | break; | |
2b97eabc | 1485 | case snd_soc_dapm_pga: |
b75576d7 | 1486 | w->power_check = dapm_generic_check_power; |
2b97eabc RP |
1487 | dapm_new_pga(codec, w); |
1488 | break; | |
1489 | case snd_soc_dapm_input: | |
1490 | case snd_soc_dapm_output: | |
1491 | case snd_soc_dapm_micbias: | |
1492 | case snd_soc_dapm_spk: | |
1493 | case snd_soc_dapm_hp: | |
1494 | case snd_soc_dapm_mic: | |
1495 | case snd_soc_dapm_line: | |
b75576d7 MB |
1496 | w->power_check = dapm_generic_check_power; |
1497 | break; | |
246d0a17 MB |
1498 | case snd_soc_dapm_supply: |
1499 | w->power_check = dapm_supply_check_power; | |
2b97eabc RP |
1500 | case snd_soc_dapm_vmid: |
1501 | case snd_soc_dapm_pre: | |
1502 | case snd_soc_dapm_post: | |
1503 | break; | |
1504 | } | |
1505 | w->new = 1; | |
1506 | } | |
1507 | ||
1508 | dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP); | |
2b97eabc RP |
1509 | return 0; |
1510 | } | |
1511 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets); | |
1512 | ||
1513 | /** | |
1514 | * snd_soc_dapm_get_volsw - dapm mixer get callback | |
1515 | * @kcontrol: mixer control | |
ac11a2b3 | 1516 | * @ucontrol: control element information |
2b97eabc RP |
1517 | * |
1518 | * Callback to get the value of a dapm mixer control. | |
1519 | * | |
1520 | * Returns 0 for success. | |
1521 | */ | |
1522 | int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol, | |
1523 | struct snd_ctl_elem_value *ucontrol) | |
1524 | { | |
1525 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
4eaa9819 JS |
1526 | struct soc_mixer_control *mc = |
1527 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
1528 | unsigned int reg = mc->reg; |
1529 | unsigned int shift = mc->shift; | |
1530 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1531 | int max = mc->max; |
815ecf8d JS |
1532 | unsigned int invert = mc->invert; |
1533 | unsigned int mask = (1 << fls(max)) - 1; | |
2b97eabc | 1534 | |
2b97eabc RP |
1535 | ucontrol->value.integer.value[0] = |
1536 | (snd_soc_read(widget->codec, reg) >> shift) & mask; | |
1537 | if (shift != rshift) | |
1538 | ucontrol->value.integer.value[1] = | |
1539 | (snd_soc_read(widget->codec, reg) >> rshift) & mask; | |
1540 | if (invert) { | |
1541 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1542 | max - ucontrol->value.integer.value[0]; |
2b97eabc RP |
1543 | if (shift != rshift) |
1544 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 1545 | max - ucontrol->value.integer.value[1]; |
2b97eabc RP |
1546 | } |
1547 | ||
1548 | return 0; | |
1549 | } | |
1550 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw); | |
1551 | ||
1552 | /** | |
1553 | * snd_soc_dapm_put_volsw - dapm mixer set callback | |
1554 | * @kcontrol: mixer control | |
ac11a2b3 | 1555 | * @ucontrol: control element information |
2b97eabc RP |
1556 | * |
1557 | * Callback to set the value of a dapm mixer control. | |
1558 | * | |
1559 | * Returns 0 for success. | |
1560 | */ | |
1561 | int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, | |
1562 | struct snd_ctl_elem_value *ucontrol) | |
1563 | { | |
1564 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
4eaa9819 JS |
1565 | struct soc_mixer_control *mc = |
1566 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
1567 | unsigned int reg = mc->reg; |
1568 | unsigned int shift = mc->shift; | |
1569 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1570 | int max = mc->max; |
815ecf8d JS |
1571 | unsigned int mask = (1 << fls(max)) - 1; |
1572 | unsigned int invert = mc->invert; | |
46f5822f | 1573 | unsigned int val, val2, val_mask; |
283375ce | 1574 | int connect; |
2b97eabc RP |
1575 | int ret; |
1576 | ||
1577 | val = (ucontrol->value.integer.value[0] & mask); | |
1578 | ||
1579 | if (invert) | |
a7a4ac86 | 1580 | val = max - val; |
2b97eabc RP |
1581 | val_mask = mask << shift; |
1582 | val = val << shift; | |
1583 | if (shift != rshift) { | |
1584 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1585 | if (invert) | |
a7a4ac86 | 1586 | val2 = max - val2; |
2b97eabc RP |
1587 | val_mask |= mask << rshift; |
1588 | val |= val2 << rshift; | |
1589 | } | |
1590 | ||
1591 | mutex_lock(&widget->codec->mutex); | |
1592 | widget->value = val; | |
1593 | ||
283375ce MB |
1594 | if (snd_soc_test_bits(widget->codec, reg, val_mask, val)) { |
1595 | if (val) | |
1596 | /* new connection */ | |
1597 | connect = invert ? 0:1; | |
1598 | else | |
1599 | /* old connection must be powered down */ | |
1600 | connect = invert ? 1:0; | |
1601 | ||
1602 | dapm_mixer_update_power(widget, kcontrol, connect); | |
1603 | } | |
1604 | ||
2b97eabc RP |
1605 | if (widget->event) { |
1606 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
9af6d956 LG |
1607 | ret = widget->event(widget, kcontrol, |
1608 | SND_SOC_DAPM_PRE_REG); | |
1609 | if (ret < 0) { | |
1610 | ret = 1; | |
2b97eabc | 1611 | goto out; |
9af6d956 | 1612 | } |
2b97eabc RP |
1613 | } |
1614 | ret = snd_soc_update_bits(widget->codec, reg, val_mask, val); | |
1615 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
9af6d956 LG |
1616 | ret = widget->event(widget, kcontrol, |
1617 | SND_SOC_DAPM_POST_REG); | |
2b97eabc RP |
1618 | } else |
1619 | ret = snd_soc_update_bits(widget->codec, reg, val_mask, val); | |
1620 | ||
1621 | out: | |
1622 | mutex_unlock(&widget->codec->mutex); | |
1623 | return ret; | |
1624 | } | |
1625 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw); | |
1626 | ||
1627 | /** | |
1628 | * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback | |
1629 | * @kcontrol: mixer control | |
ac11a2b3 | 1630 | * @ucontrol: control element information |
2b97eabc RP |
1631 | * |
1632 | * Callback to get the value of a dapm enumerated double mixer control. | |
1633 | * | |
1634 | * Returns 0 for success. | |
1635 | */ | |
1636 | int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol, | |
1637 | struct snd_ctl_elem_value *ucontrol) | |
1638 | { | |
1639 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1640 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
46f5822f | 1641 | unsigned int val, bitmask; |
2b97eabc | 1642 | |
f8ba0b7b | 1643 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
1644 | ; |
1645 | val = snd_soc_read(widget->codec, e->reg); | |
1646 | ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1); | |
1647 | if (e->shift_l != e->shift_r) | |
1648 | ucontrol->value.enumerated.item[1] = | |
1649 | (val >> e->shift_r) & (bitmask - 1); | |
1650 | ||
1651 | return 0; | |
1652 | } | |
1653 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double); | |
1654 | ||
1655 | /** | |
1656 | * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback | |
1657 | * @kcontrol: mixer control | |
ac11a2b3 | 1658 | * @ucontrol: control element information |
2b97eabc RP |
1659 | * |
1660 | * Callback to set the value of a dapm enumerated double mixer control. | |
1661 | * | |
1662 | * Returns 0 for success. | |
1663 | */ | |
1664 | int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, | |
1665 | struct snd_ctl_elem_value *ucontrol) | |
1666 | { | |
1667 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1668 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
3a65577d | 1669 | unsigned int val, mux, change; |
46f5822f | 1670 | unsigned int mask, bitmask; |
2b97eabc RP |
1671 | int ret = 0; |
1672 | ||
f8ba0b7b | 1673 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc | 1674 | ; |
f8ba0b7b | 1675 | if (ucontrol->value.enumerated.item[0] > e->max - 1) |
2b97eabc RP |
1676 | return -EINVAL; |
1677 | mux = ucontrol->value.enumerated.item[0]; | |
1678 | val = mux << e->shift_l; | |
1679 | mask = (bitmask - 1) << e->shift_l; | |
1680 | if (e->shift_l != e->shift_r) { | |
f8ba0b7b | 1681 | if (ucontrol->value.enumerated.item[1] > e->max - 1) |
2b97eabc RP |
1682 | return -EINVAL; |
1683 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
1684 | mask |= (bitmask - 1) << e->shift_r; | |
1685 | } | |
1686 | ||
1687 | mutex_lock(&widget->codec->mutex); | |
1688 | widget->value = val; | |
3a65577d MB |
1689 | change = snd_soc_test_bits(widget->codec, e->reg, mask, val); |
1690 | dapm_mux_update_power(widget, kcontrol, change, mux, e); | |
1642e3d4 MB |
1691 | |
1692 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
1693 | ret = widget->event(widget, | |
1694 | kcontrol, SND_SOC_DAPM_PRE_REG); | |
1695 | if (ret < 0) | |
1696 | goto out; | |
1697 | } | |
1698 | ||
1699 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1700 | ||
1701 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
1702 | ret = widget->event(widget, | |
1703 | kcontrol, SND_SOC_DAPM_POST_REG); | |
2b97eabc RP |
1704 | |
1705 | out: | |
1706 | mutex_unlock(&widget->codec->mutex); | |
1707 | return ret; | |
1708 | } | |
1709 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double); | |
1710 | ||
d2b247a8 MB |
1711 | /** |
1712 | * snd_soc_dapm_get_enum_virt - Get virtual DAPM mux | |
1713 | * @kcontrol: mixer control | |
1714 | * @ucontrol: control element information | |
1715 | * | |
1716 | * Returns 0 for success. | |
1717 | */ | |
1718 | int snd_soc_dapm_get_enum_virt(struct snd_kcontrol *kcontrol, | |
1719 | struct snd_ctl_elem_value *ucontrol) | |
1720 | { | |
1721 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1722 | ||
1723 | ucontrol->value.enumerated.item[0] = widget->value; | |
1724 | ||
1725 | return 0; | |
1726 | } | |
1727 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_virt); | |
1728 | ||
1729 | /** | |
1730 | * snd_soc_dapm_put_enum_virt - Set virtual DAPM mux | |
1731 | * @kcontrol: mixer control | |
1732 | * @ucontrol: control element information | |
1733 | * | |
1734 | * Returns 0 for success. | |
1735 | */ | |
1736 | int snd_soc_dapm_put_enum_virt(struct snd_kcontrol *kcontrol, | |
1737 | struct snd_ctl_elem_value *ucontrol) | |
1738 | { | |
1739 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1740 | struct soc_enum *e = | |
1741 | (struct soc_enum *)kcontrol->private_value; | |
1742 | int change; | |
1743 | int ret = 0; | |
1744 | ||
1745 | if (ucontrol->value.enumerated.item[0] >= e->max) | |
1746 | return -EINVAL; | |
1747 | ||
1748 | mutex_lock(&widget->codec->mutex); | |
1749 | ||
1750 | change = widget->value != ucontrol->value.enumerated.item[0]; | |
1751 | widget->value = ucontrol->value.enumerated.item[0]; | |
1752 | dapm_mux_update_power(widget, kcontrol, change, widget->value, e); | |
1753 | ||
1754 | mutex_unlock(&widget->codec->mutex); | |
1755 | return ret; | |
1756 | } | |
1757 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt); | |
1758 | ||
2e72f8e3 PU |
1759 | /** |
1760 | * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get | |
1761 | * callback | |
1762 | * @kcontrol: mixer control | |
1763 | * @ucontrol: control element information | |
1764 | * | |
1765 | * Callback to get the value of a dapm semi enumerated double mixer control. | |
1766 | * | |
1767 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
1768 | * used for handling bitfield coded enumeration for example. | |
1769 | * | |
1770 | * Returns 0 for success. | |
1771 | */ | |
1772 | int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol *kcontrol, | |
1773 | struct snd_ctl_elem_value *ucontrol) | |
1774 | { | |
1775 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
74155556 | 1776 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f | 1777 | unsigned int reg_val, val, mux; |
2e72f8e3 PU |
1778 | |
1779 | reg_val = snd_soc_read(widget->codec, e->reg); | |
1780 | val = (reg_val >> e->shift_l) & e->mask; | |
1781 | for (mux = 0; mux < e->max; mux++) { | |
1782 | if (val == e->values[mux]) | |
1783 | break; | |
1784 | } | |
1785 | ucontrol->value.enumerated.item[0] = mux; | |
1786 | if (e->shift_l != e->shift_r) { | |
1787 | val = (reg_val >> e->shift_r) & e->mask; | |
1788 | for (mux = 0; mux < e->max; mux++) { | |
1789 | if (val == e->values[mux]) | |
1790 | break; | |
1791 | } | |
1792 | ucontrol->value.enumerated.item[1] = mux; | |
1793 | } | |
1794 | ||
1795 | return 0; | |
1796 | } | |
1797 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double); | |
1798 | ||
1799 | /** | |
1800 | * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set | |
1801 | * callback | |
1802 | * @kcontrol: mixer control | |
1803 | * @ucontrol: control element information | |
1804 | * | |
1805 | * Callback to set the value of a dapm semi enumerated double mixer control. | |
1806 | * | |
1807 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
1808 | * used for handling bitfield coded enumeration for example. | |
1809 | * | |
1810 | * Returns 0 for success. | |
1811 | */ | |
1812 | int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol, | |
1813 | struct snd_ctl_elem_value *ucontrol) | |
1814 | { | |
1815 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
74155556 | 1816 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
3a65577d | 1817 | unsigned int val, mux, change; |
46f5822f | 1818 | unsigned int mask; |
2e72f8e3 PU |
1819 | int ret = 0; |
1820 | ||
1821 | if (ucontrol->value.enumerated.item[0] > e->max - 1) | |
1822 | return -EINVAL; | |
1823 | mux = ucontrol->value.enumerated.item[0]; | |
1824 | val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l; | |
1825 | mask = e->mask << e->shift_l; | |
1826 | if (e->shift_l != e->shift_r) { | |
1827 | if (ucontrol->value.enumerated.item[1] > e->max - 1) | |
1828 | return -EINVAL; | |
1829 | val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r; | |
1830 | mask |= e->mask << e->shift_r; | |
1831 | } | |
1832 | ||
1833 | mutex_lock(&widget->codec->mutex); | |
1834 | widget->value = val; | |
3a65577d MB |
1835 | change = snd_soc_test_bits(widget->codec, e->reg, mask, val); |
1836 | dapm_mux_update_power(widget, kcontrol, change, mux, e); | |
1642e3d4 MB |
1837 | |
1838 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
1839 | ret = widget->event(widget, | |
1840 | kcontrol, SND_SOC_DAPM_PRE_REG); | |
1841 | if (ret < 0) | |
1842 | goto out; | |
1843 | } | |
1844 | ||
1845 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1846 | ||
1847 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
1848 | ret = widget->event(widget, | |
1849 | kcontrol, SND_SOC_DAPM_POST_REG); | |
2e72f8e3 PU |
1850 | |
1851 | out: | |
1852 | mutex_unlock(&widget->codec->mutex); | |
1853 | return ret; | |
1854 | } | |
1855 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double); | |
1856 | ||
8b37dbd2 MB |
1857 | /** |
1858 | * snd_soc_dapm_info_pin_switch - Info for a pin switch | |
1859 | * | |
1860 | * @kcontrol: mixer control | |
1861 | * @uinfo: control element information | |
1862 | * | |
1863 | * Callback to provide information about a pin switch control. | |
1864 | */ | |
1865 | int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol, | |
1866 | struct snd_ctl_elem_info *uinfo) | |
1867 | { | |
1868 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1869 | uinfo->count = 1; | |
1870 | uinfo->value.integer.min = 0; | |
1871 | uinfo->value.integer.max = 1; | |
1872 | ||
1873 | return 0; | |
1874 | } | |
1875 | EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch); | |
1876 | ||
1877 | /** | |
1878 | * snd_soc_dapm_get_pin_switch - Get information for a pin switch | |
1879 | * | |
1880 | * @kcontrol: mixer control | |
1881 | * @ucontrol: Value | |
1882 | */ | |
1883 | int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol, | |
1884 | struct snd_ctl_elem_value *ucontrol) | |
1885 | { | |
1886 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1887 | const char *pin = (const char *)kcontrol->private_value; | |
1888 | ||
1889 | mutex_lock(&codec->mutex); | |
1890 | ||
1891 | ucontrol->value.integer.value[0] = | |
1892 | snd_soc_dapm_get_pin_status(codec, pin); | |
1893 | ||
1894 | mutex_unlock(&codec->mutex); | |
1895 | ||
1896 | return 0; | |
1897 | } | |
1898 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch); | |
1899 | ||
1900 | /** | |
1901 | * snd_soc_dapm_put_pin_switch - Set information for a pin switch | |
1902 | * | |
1903 | * @kcontrol: mixer control | |
1904 | * @ucontrol: Value | |
1905 | */ | |
1906 | int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol, | |
1907 | struct snd_ctl_elem_value *ucontrol) | |
1908 | { | |
1909 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1910 | const char *pin = (const char *)kcontrol->private_value; | |
1911 | ||
1912 | mutex_lock(&codec->mutex); | |
1913 | ||
1914 | if (ucontrol->value.integer.value[0]) | |
1915 | snd_soc_dapm_enable_pin(codec, pin); | |
1916 | else | |
1917 | snd_soc_dapm_disable_pin(codec, pin); | |
1918 | ||
1919 | snd_soc_dapm_sync(codec); | |
1920 | ||
1921 | mutex_unlock(&codec->mutex); | |
1922 | ||
1923 | return 0; | |
1924 | } | |
1925 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch); | |
1926 | ||
2b97eabc RP |
1927 | /** |
1928 | * snd_soc_dapm_new_control - create new dapm control | |
1929 | * @codec: audio codec | |
1930 | * @widget: widget template | |
1931 | * | |
1932 | * Creates a new dapm control based upon the template. | |
1933 | * | |
1934 | * Returns 0 for success else error. | |
1935 | */ | |
1936 | int snd_soc_dapm_new_control(struct snd_soc_codec *codec, | |
1937 | const struct snd_soc_dapm_widget *widget) | |
1938 | { | |
1939 | struct snd_soc_dapm_widget *w; | |
1940 | ||
1941 | if ((w = dapm_cnew_widget(widget)) == NULL) | |
1942 | return -ENOMEM; | |
1943 | ||
1944 | w->codec = codec; | |
1945 | INIT_LIST_HEAD(&w->sources); | |
1946 | INIT_LIST_HEAD(&w->sinks); | |
1947 | INIT_LIST_HEAD(&w->list); | |
1948 | list_add(&w->list, &codec->dapm_widgets); | |
1949 | ||
1950 | /* machine layer set ups unconnected pins and insertions */ | |
1951 | w->connected = 1; | |
1952 | return 0; | |
1953 | } | |
1954 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control); | |
1955 | ||
4ba1327a MB |
1956 | /** |
1957 | * snd_soc_dapm_new_controls - create new dapm controls | |
1958 | * @codec: audio codec | |
1959 | * @widget: widget array | |
1960 | * @num: number of widgets | |
1961 | * | |
1962 | * Creates new DAPM controls based upon the templates. | |
1963 | * | |
1964 | * Returns 0 for success else error. | |
1965 | */ | |
1966 | int snd_soc_dapm_new_controls(struct snd_soc_codec *codec, | |
1967 | const struct snd_soc_dapm_widget *widget, | |
1968 | int num) | |
1969 | { | |
1970 | int i, ret; | |
1971 | ||
1972 | for (i = 0; i < num; i++) { | |
1973 | ret = snd_soc_dapm_new_control(codec, widget); | |
b8b33cb5 MB |
1974 | if (ret < 0) { |
1975 | printk(KERN_ERR | |
1976 | "ASoC: Failed to create DAPM control %s: %d\n", | |
1977 | widget->name, ret); | |
4ba1327a | 1978 | return ret; |
b8b33cb5 | 1979 | } |
4ba1327a MB |
1980 | widget++; |
1981 | } | |
1982 | return 0; | |
1983 | } | |
1984 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls); | |
1985 | ||
1986 | ||
2b97eabc RP |
1987 | /** |
1988 | * snd_soc_dapm_stream_event - send a stream event to the dapm core | |
1989 | * @codec: audio codec | |
1990 | * @stream: stream name | |
1991 | * @event: stream event | |
1992 | * | |
1993 | * Sends a stream event to the dapm core. The core then makes any | |
1994 | * necessary widget power changes. | |
1995 | * | |
1996 | * Returns 0 for success else error. | |
1997 | */ | |
f0fba2ad LG |
1998 | int snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, |
1999 | const char *stream, int event) | |
2b97eabc | 2000 | { |
f0fba2ad | 2001 | struct snd_soc_codec *codec = rtd->codec; |
2b97eabc RP |
2002 | struct snd_soc_dapm_widget *w; |
2003 | ||
11da21a7 SF |
2004 | if (stream == NULL) |
2005 | return 0; | |
2006 | ||
2b97eabc RP |
2007 | mutex_lock(&codec->mutex); |
2008 | list_for_each_entry(w, &codec->dapm_widgets, list) | |
2009 | { | |
2010 | if (!w->sname) | |
2011 | continue; | |
c1286b86 MB |
2012 | pr_debug("widget %s\n %s stream %s event %d\n", |
2013 | w->name, w->sname, stream, event); | |
2b97eabc RP |
2014 | if (strstr(w->sname, stream)) { |
2015 | switch(event) { | |
2016 | case SND_SOC_DAPM_STREAM_START: | |
2017 | w->active = 1; | |
2018 | break; | |
2019 | case SND_SOC_DAPM_STREAM_STOP: | |
2020 | w->active = 0; | |
2021 | break; | |
2022 | case SND_SOC_DAPM_STREAM_SUSPEND: | |
2b97eabc | 2023 | case SND_SOC_DAPM_STREAM_RESUME: |
2b97eabc | 2024 | case SND_SOC_DAPM_STREAM_PAUSE_PUSH: |
2b97eabc RP |
2025 | case SND_SOC_DAPM_STREAM_PAUSE_RELEASE: |
2026 | break; | |
2027 | } | |
2028 | } | |
2029 | } | |
2b97eabc RP |
2030 | |
2031 | dapm_power_widgets(codec, event); | |
8e8b2d67 | 2032 | mutex_unlock(&codec->mutex); |
2b97eabc RP |
2033 | return 0; |
2034 | } | |
2035 | EXPORT_SYMBOL_GPL(snd_soc_dapm_stream_event); | |
2036 | ||
2037 | /** | |
a5302181 | 2038 | * snd_soc_dapm_enable_pin - enable pin. |
ac11a2b3 | 2039 | * @codec: SoC codec |
a5302181 | 2040 | * @pin: pin name |
2b97eabc | 2041 | * |
74b8f955 | 2042 | * Enables input/output pin and its parents or children widgets iff there is |
a5302181 LG |
2043 | * a valid audio route and active audio stream. |
2044 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2045 | * do any widget power switching. | |
2b97eabc | 2046 | */ |
1649923d | 2047 | int snd_soc_dapm_enable_pin(struct snd_soc_codec *codec, const char *pin) |
2b97eabc | 2048 | { |
a5302181 LG |
2049 | return snd_soc_dapm_set_pin(codec, pin, 1); |
2050 | } | |
2051 | EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin); | |
2b97eabc | 2052 | |
da34183e MB |
2053 | /** |
2054 | * snd_soc_dapm_force_enable_pin - force a pin to be enabled | |
2055 | * @codec: SoC codec | |
2056 | * @pin: pin name | |
2057 | * | |
2058 | * Enables input/output pin regardless of any other state. This is | |
2059 | * intended for use with microphone bias supplies used in microphone | |
2060 | * jack detection. | |
2061 | * | |
2062 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2063 | * do any widget power switching. | |
2064 | */ | |
2065 | int snd_soc_dapm_force_enable_pin(struct snd_soc_codec *codec, const char *pin) | |
2066 | { | |
2067 | struct snd_soc_dapm_widget *w; | |
2068 | ||
2069 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
2070 | if (!strcmp(w->name, pin)) { | |
2071 | pr_debug("dapm: %s: pin %s\n", codec->name, pin); | |
2072 | w->connected = 1; | |
2073 | w->force = 1; | |
2074 | return 0; | |
2075 | } | |
2076 | } | |
2077 | ||
2078 | pr_err("dapm: %s: configuring unknown pin %s\n", codec->name, pin); | |
2079 | return -EINVAL; | |
2080 | } | |
2081 | EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin); | |
2082 | ||
a5302181 LG |
2083 | /** |
2084 | * snd_soc_dapm_disable_pin - disable pin. | |
2085 | * @codec: SoC codec | |
2086 | * @pin: pin name | |
2087 | * | |
74b8f955 | 2088 | * Disables input/output pin and its parents or children widgets. |
a5302181 LG |
2089 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to |
2090 | * do any widget power switching. | |
2091 | */ | |
1649923d | 2092 | int snd_soc_dapm_disable_pin(struct snd_soc_codec *codec, const char *pin) |
a5302181 LG |
2093 | { |
2094 | return snd_soc_dapm_set_pin(codec, pin, 0); | |
2b97eabc | 2095 | } |
a5302181 | 2096 | EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin); |
2b97eabc | 2097 | |
5817b52a MB |
2098 | /** |
2099 | * snd_soc_dapm_nc_pin - permanently disable pin. | |
2100 | * @codec: SoC codec | |
2101 | * @pin: pin name | |
2102 | * | |
2103 | * Marks the specified pin as being not connected, disabling it along | |
2104 | * any parent or child widgets. At present this is identical to | |
2105 | * snd_soc_dapm_disable_pin() but in future it will be extended to do | |
2106 | * additional things such as disabling controls which only affect | |
2107 | * paths through the pin. | |
2108 | * | |
2109 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2110 | * do any widget power switching. | |
2111 | */ | |
1649923d | 2112 | int snd_soc_dapm_nc_pin(struct snd_soc_codec *codec, const char *pin) |
5817b52a MB |
2113 | { |
2114 | return snd_soc_dapm_set_pin(codec, pin, 0); | |
2115 | } | |
2116 | EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin); | |
2117 | ||
eeec12bf | 2118 | /** |
a5302181 | 2119 | * snd_soc_dapm_get_pin_status - get audio pin status |
eeec12bf | 2120 | * @codec: audio codec |
a5302181 | 2121 | * @pin: audio signal pin endpoint (or start point) |
eeec12bf | 2122 | * |
a5302181 | 2123 | * Get audio pin status - connected or disconnected. |
eeec12bf | 2124 | * |
a5302181 | 2125 | * Returns 1 for connected otherwise 0. |
eeec12bf | 2126 | */ |
1649923d | 2127 | int snd_soc_dapm_get_pin_status(struct snd_soc_codec *codec, const char *pin) |
eeec12bf GG |
2128 | { |
2129 | struct snd_soc_dapm_widget *w; | |
2130 | ||
2131 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
a5302181 | 2132 | if (!strcmp(w->name, pin)) |
eeec12bf GG |
2133 | return w->connected; |
2134 | } | |
2135 | ||
2136 | return 0; | |
2137 | } | |
a5302181 | 2138 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status); |
eeec12bf | 2139 | |
1547aba9 MB |
2140 | /** |
2141 | * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint | |
2142 | * @codec: audio codec | |
2143 | * @pin: audio signal pin endpoint (or start point) | |
2144 | * | |
2145 | * Mark the given endpoint or pin as ignoring suspend. When the | |
2146 | * system is disabled a path between two endpoints flagged as ignoring | |
2147 | * suspend will not be disabled. The path must already be enabled via | |
2148 | * normal means at suspend time, it will not be turned on if it was not | |
2149 | * already enabled. | |
2150 | */ | |
2151 | int snd_soc_dapm_ignore_suspend(struct snd_soc_codec *codec, const char *pin) | |
2152 | { | |
2153 | struct snd_soc_dapm_widget *w; | |
2154 | ||
2155 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
2156 | if (!strcmp(w->name, pin)) { | |
2157 | w->ignore_suspend = 1; | |
2158 | return 0; | |
2159 | } | |
2160 | } | |
2161 | ||
2162 | pr_err("Unknown DAPM pin: %s\n", pin); | |
2163 | return -EINVAL; | |
2164 | } | |
2165 | EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend); | |
2166 | ||
2b97eabc RP |
2167 | /** |
2168 | * snd_soc_dapm_free - free dapm resources | |
f0fba2ad | 2169 | * @card: SoC device |
2b97eabc RP |
2170 | * |
2171 | * Free all dapm widgets and resources. | |
2172 | */ | |
f0fba2ad | 2173 | void snd_soc_dapm_free(struct snd_soc_codec *codec) |
2b97eabc | 2174 | { |
f0fba2ad | 2175 | snd_soc_dapm_sys_remove(codec->dev); |
2b97eabc RP |
2176 | dapm_free_widgets(codec); |
2177 | } | |
2178 | EXPORT_SYMBOL_GPL(snd_soc_dapm_free); | |
2179 | ||
f0fba2ad | 2180 | static void soc_dapm_shutdown_codec(struct snd_soc_codec *codec) |
51737470 | 2181 | { |
51737470 MB |
2182 | struct snd_soc_dapm_widget *w; |
2183 | LIST_HEAD(down_list); | |
2184 | int powerdown = 0; | |
2185 | ||
2186 | list_for_each_entry(w, &codec->dapm_widgets, list) { | |
2187 | if (w->power) { | |
2188 | dapm_seq_insert(w, &down_list, dapm_down_seq); | |
c2caa4da | 2189 | w->power = 0; |
51737470 MB |
2190 | powerdown = 1; |
2191 | } | |
2192 | } | |
2193 | ||
2194 | /* If there were no widgets to power down we're already in | |
2195 | * standby. | |
2196 | */ | |
2197 | if (powerdown) { | |
f0fba2ad | 2198 | snd_soc_dapm_set_bias_level(NULL, codec, SND_SOC_BIAS_PREPARE); |
51737470 | 2199 | dapm_seq_run(codec, &down_list, 0, dapm_down_seq); |
f0fba2ad | 2200 | snd_soc_dapm_set_bias_level(NULL, codec, SND_SOC_BIAS_STANDBY); |
51737470 | 2201 | } |
f0fba2ad LG |
2202 | } |
2203 | ||
2204 | /* | |
2205 | * snd_soc_dapm_shutdown - callback for system shutdown | |
2206 | */ | |
2207 | void snd_soc_dapm_shutdown(struct snd_soc_card *card) | |
2208 | { | |
2209 | struct snd_soc_codec *codec; | |
2210 | ||
2211 | list_for_each_entry(codec, &card->codec_dev_list, list) | |
2212 | soc_dapm_shutdown_codec(codec); | |
51737470 | 2213 | |
f0fba2ad | 2214 | snd_soc_dapm_set_bias_level(card, codec, SND_SOC_BIAS_OFF); |
51737470 MB |
2215 | } |
2216 | ||
2b97eabc | 2217 | /* Module information */ |
d331124d | 2218 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
2b97eabc RP |
2219 | MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC"); |
2220 | MODULE_LICENSE("GPL"); |