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Commit | Line | Data |
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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> | |
9d0624a7 | 35 | #include <linux/async.h> |
2b97eabc RP |
36 | #include <linux/delay.h> |
37 | #include <linux/pm.h> | |
38 | #include <linux/bitops.h> | |
39 | #include <linux/platform_device.h> | |
40 | #include <linux/jiffies.h> | |
20496ff3 | 41 | #include <linux/debugfs.h> |
5a0e3ad6 | 42 | #include <linux/slab.h> |
2b97eabc RP |
43 | #include <sound/core.h> |
44 | #include <sound/pcm.h> | |
45 | #include <sound/pcm_params.h> | |
ce6120cc | 46 | #include <sound/soc.h> |
2b97eabc RP |
47 | #include <sound/initval.h> |
48 | ||
84e90930 MB |
49 | #include <trace/events/asoc.h> |
50 | ||
2b97eabc RP |
51 | /* dapm power sequences - make this per codec in the future */ |
52 | static int dapm_up_seq[] = { | |
38357ab2 MB |
53 | [snd_soc_dapm_pre] = 0, |
54 | [snd_soc_dapm_supply] = 1, | |
55 | [snd_soc_dapm_micbias] = 2, | |
010ff262 MB |
56 | [snd_soc_dapm_aif_in] = 3, |
57 | [snd_soc_dapm_aif_out] = 3, | |
58 | [snd_soc_dapm_mic] = 4, | |
59 | [snd_soc_dapm_mux] = 5, | |
24ff33ac | 60 | [snd_soc_dapm_virt_mux] = 5, |
010ff262 MB |
61 | [snd_soc_dapm_value_mux] = 5, |
62 | [snd_soc_dapm_dac] = 6, | |
63 | [snd_soc_dapm_mixer] = 7, | |
64 | [snd_soc_dapm_mixer_named_ctl] = 7, | |
65 | [snd_soc_dapm_pga] = 8, | |
66 | [snd_soc_dapm_adc] = 9, | |
d88429a6 | 67 | [snd_soc_dapm_out_drv] = 10, |
010ff262 MB |
68 | [snd_soc_dapm_hp] = 10, |
69 | [snd_soc_dapm_spk] = 10, | |
70 | [snd_soc_dapm_post] = 11, | |
2b97eabc | 71 | }; |
ca9c1aae | 72 | |
2b97eabc | 73 | static int dapm_down_seq[] = { |
38357ab2 MB |
74 | [snd_soc_dapm_pre] = 0, |
75 | [snd_soc_dapm_adc] = 1, | |
76 | [snd_soc_dapm_hp] = 2, | |
1ca04065 | 77 | [snd_soc_dapm_spk] = 2, |
d88429a6 | 78 | [snd_soc_dapm_out_drv] = 2, |
38357ab2 MB |
79 | [snd_soc_dapm_pga] = 4, |
80 | [snd_soc_dapm_mixer_named_ctl] = 5, | |
e3d4dabd MB |
81 | [snd_soc_dapm_mixer] = 5, |
82 | [snd_soc_dapm_dac] = 6, | |
83 | [snd_soc_dapm_mic] = 7, | |
84 | [snd_soc_dapm_micbias] = 8, | |
85 | [snd_soc_dapm_mux] = 9, | |
24ff33ac | 86 | [snd_soc_dapm_virt_mux] = 9, |
e3d4dabd | 87 | [snd_soc_dapm_value_mux] = 9, |
010ff262 MB |
88 | [snd_soc_dapm_aif_in] = 10, |
89 | [snd_soc_dapm_aif_out] = 10, | |
90 | [snd_soc_dapm_supply] = 11, | |
91 | [snd_soc_dapm_post] = 12, | |
2b97eabc RP |
92 | }; |
93 | ||
12ef193d | 94 | static void pop_wait(u32 pop_time) |
15e4c72f MB |
95 | { |
96 | if (pop_time) | |
97 | schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time)); | |
98 | } | |
99 | ||
fd8d3bc0 | 100 | static void pop_dbg(struct device *dev, u32 pop_time, const char *fmt, ...) |
15e4c72f MB |
101 | { |
102 | va_list args; | |
fd8d3bc0 | 103 | char *buf; |
15e4c72f | 104 | |
fd8d3bc0 JN |
105 | if (!pop_time) |
106 | return; | |
15e4c72f | 107 | |
fd8d3bc0 JN |
108 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); |
109 | if (buf == NULL) | |
110 | return; | |
15e4c72f | 111 | |
fd8d3bc0 JN |
112 | va_start(args, fmt); |
113 | vsnprintf(buf, PAGE_SIZE, fmt, args); | |
9d01df06 | 114 | dev_info(dev, "%s", buf); |
15e4c72f | 115 | va_end(args); |
fd8d3bc0 JN |
116 | |
117 | kfree(buf); | |
15e4c72f MB |
118 | } |
119 | ||
2b97eabc | 120 | /* create a new dapm widget */ |
88cb4290 | 121 | static inline struct snd_soc_dapm_widget *dapm_cnew_widget( |
2b97eabc RP |
122 | const struct snd_soc_dapm_widget *_widget) |
123 | { | |
88cb4290 | 124 | return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL); |
2b97eabc RP |
125 | } |
126 | ||
452c5eaa MB |
127 | /** |
128 | * snd_soc_dapm_set_bias_level - set the bias level for the system | |
ed5a4c47 | 129 | * @dapm: DAPM context |
452c5eaa MB |
130 | * @level: level to configure |
131 | * | |
132 | * Configure the bias (power) levels for the SoC audio device. | |
133 | * | |
134 | * Returns 0 for success else error. | |
135 | */ | |
ed5a4c47 | 136 | static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm, |
ce6120cc | 137 | enum snd_soc_bias_level level) |
452c5eaa | 138 | { |
ed5a4c47 | 139 | struct snd_soc_card *card = dapm->card; |
452c5eaa MB |
140 | int ret = 0; |
141 | ||
84e90930 MB |
142 | trace_snd_soc_bias_level_start(card, level); |
143 | ||
f0fba2ad | 144 | if (card && card->set_bias_level) |
d4c6005f | 145 | ret = card->set_bias_level(card, dapm, level); |
171ec6b0 MB |
146 | if (ret != 0) |
147 | goto out; | |
148 | ||
cc4c670a MB |
149 | if (dapm->codec) { |
150 | if (dapm->codec->driver->set_bias_level) | |
151 | ret = dapm->codec->driver->set_bias_level(dapm->codec, | |
152 | level); | |
153 | else | |
154 | dapm->bias_level = level; | |
155 | } | |
171ec6b0 MB |
156 | if (ret != 0) |
157 | goto out; | |
158 | ||
159 | if (card && card->set_bias_level_post) | |
d4c6005f | 160 | ret = card->set_bias_level_post(card, dapm, level); |
171ec6b0 | 161 | out: |
84e90930 MB |
162 | trace_snd_soc_bias_level_done(card, level); |
163 | ||
452c5eaa MB |
164 | return ret; |
165 | } | |
166 | ||
2b97eabc RP |
167 | /* set up initial codec paths */ |
168 | static void dapm_set_path_status(struct snd_soc_dapm_widget *w, | |
169 | struct snd_soc_dapm_path *p, int i) | |
170 | { | |
171 | switch (w->id) { | |
172 | case snd_soc_dapm_switch: | |
ca9c1aae IM |
173 | case snd_soc_dapm_mixer: |
174 | case snd_soc_dapm_mixer_named_ctl: { | |
2b97eabc | 175 | int val; |
4eaa9819 | 176 | struct soc_mixer_control *mc = (struct soc_mixer_control *) |
82cfecdc | 177 | w->kcontrol_news[i].private_value; |
815ecf8d JS |
178 | unsigned int reg = mc->reg; |
179 | unsigned int shift = mc->shift; | |
4eaa9819 | 180 | int max = mc->max; |
815ecf8d JS |
181 | unsigned int mask = (1 << fls(max)) - 1; |
182 | unsigned int invert = mc->invert; | |
2b97eabc RP |
183 | |
184 | val = snd_soc_read(w->codec, reg); | |
185 | val = (val >> shift) & mask; | |
186 | ||
187 | if ((invert && !val) || (!invert && val)) | |
188 | p->connect = 1; | |
189 | else | |
190 | p->connect = 0; | |
191 | } | |
192 | break; | |
193 | case snd_soc_dapm_mux: { | |
82cfecdc SW |
194 | struct soc_enum *e = (struct soc_enum *) |
195 | w->kcontrol_news[i].private_value; | |
2b97eabc RP |
196 | int val, item, bitmask; |
197 | ||
f8ba0b7b | 198 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
88d96086 | 199 | ; |
2b97eabc RP |
200 | val = snd_soc_read(w->codec, e->reg); |
201 | item = (val >> e->shift_l) & (bitmask - 1); | |
202 | ||
203 | p->connect = 0; | |
f8ba0b7b | 204 | for (i = 0; i < e->max; i++) { |
2b97eabc RP |
205 | if (!(strcmp(p->name, e->texts[i])) && item == i) |
206 | p->connect = 1; | |
207 | } | |
208 | } | |
209 | break; | |
24ff33ac | 210 | case snd_soc_dapm_virt_mux: { |
82cfecdc SW |
211 | struct soc_enum *e = (struct soc_enum *) |
212 | w->kcontrol_news[i].private_value; | |
24ff33ac DP |
213 | |
214 | p->connect = 0; | |
215 | /* since a virtual mux has no backing registers to | |
216 | * decide which path to connect, it will try to match | |
217 | * with the first enumeration. This is to ensure | |
218 | * that the default mux choice (the first) will be | |
219 | * correctly powered up during initialization. | |
220 | */ | |
221 | if (!strcmp(p->name, e->texts[0])) | |
222 | p->connect = 1; | |
223 | } | |
224 | break; | |
2e72f8e3 | 225 | case snd_soc_dapm_value_mux: { |
74155556 | 226 | struct soc_enum *e = (struct soc_enum *) |
82cfecdc | 227 | w->kcontrol_news[i].private_value; |
2e72f8e3 PU |
228 | int val, item; |
229 | ||
230 | val = snd_soc_read(w->codec, e->reg); | |
231 | val = (val >> e->shift_l) & e->mask; | |
232 | for (item = 0; item < e->max; item++) { | |
233 | if (val == e->values[item]) | |
234 | break; | |
235 | } | |
236 | ||
237 | p->connect = 0; | |
238 | for (i = 0; i < e->max; i++) { | |
239 | if (!(strcmp(p->name, e->texts[i])) && item == i) | |
240 | p->connect = 1; | |
241 | } | |
242 | } | |
243 | break; | |
2b97eabc RP |
244 | /* does not effect routing - always connected */ |
245 | case snd_soc_dapm_pga: | |
d88429a6 | 246 | case snd_soc_dapm_out_drv: |
2b97eabc RP |
247 | case snd_soc_dapm_output: |
248 | case snd_soc_dapm_adc: | |
249 | case snd_soc_dapm_input: | |
250 | case snd_soc_dapm_dac: | |
251 | case snd_soc_dapm_micbias: | |
252 | case snd_soc_dapm_vmid: | |
246d0a17 | 253 | case snd_soc_dapm_supply: |
010ff262 MB |
254 | case snd_soc_dapm_aif_in: |
255 | case snd_soc_dapm_aif_out: | |
2b97eabc RP |
256 | p->connect = 1; |
257 | break; | |
258 | /* does effect routing - dynamically connected */ | |
259 | case snd_soc_dapm_hp: | |
260 | case snd_soc_dapm_mic: | |
261 | case snd_soc_dapm_spk: | |
262 | case snd_soc_dapm_line: | |
263 | case snd_soc_dapm_pre: | |
264 | case snd_soc_dapm_post: | |
265 | p->connect = 0; | |
266 | break; | |
267 | } | |
268 | } | |
269 | ||
74b8f955 | 270 | /* connect mux widget to its interconnecting audio paths */ |
ce6120cc | 271 | static int dapm_connect_mux(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
272 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, |
273 | struct snd_soc_dapm_path *path, const char *control_name, | |
274 | const struct snd_kcontrol_new *kcontrol) | |
275 | { | |
276 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
277 | int i; | |
278 | ||
f8ba0b7b | 279 | for (i = 0; i < e->max; i++) { |
2b97eabc | 280 | if (!(strcmp(control_name, e->texts[i]))) { |
8ddab3f5 | 281 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
282 | list_add(&path->list_sink, &dest->sources); |
283 | list_add(&path->list_source, &src->sinks); | |
284 | path->name = (char*)e->texts[i]; | |
285 | dapm_set_path_status(dest, path, 0); | |
286 | return 0; | |
287 | } | |
288 | } | |
289 | ||
290 | return -ENODEV; | |
291 | } | |
292 | ||
74b8f955 | 293 | /* connect mixer widget to its interconnecting audio paths */ |
ce6120cc | 294 | static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
295 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, |
296 | struct snd_soc_dapm_path *path, const char *control_name) | |
297 | { | |
298 | int i; | |
299 | ||
300 | /* search for mixer kcontrol */ | |
301 | for (i = 0; i < dest->num_kcontrols; i++) { | |
82cfecdc | 302 | if (!strcmp(control_name, dest->kcontrol_news[i].name)) { |
8ddab3f5 | 303 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
304 | list_add(&path->list_sink, &dest->sources); |
305 | list_add(&path->list_source, &src->sinks); | |
82cfecdc | 306 | path->name = dest->kcontrol_news[i].name; |
2b97eabc RP |
307 | dapm_set_path_status(dest, path, i); |
308 | return 0; | |
309 | } | |
310 | } | |
311 | return -ENODEV; | |
312 | } | |
313 | ||
af46800b | 314 | static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context *dapm, |
1007da06 | 315 | struct snd_soc_dapm_widget *kcontrolw, |
af46800b SW |
316 | const struct snd_kcontrol_new *kcontrol_new, |
317 | struct snd_kcontrol **kcontrol) | |
318 | { | |
319 | struct snd_soc_dapm_widget *w; | |
320 | int i; | |
321 | ||
322 | *kcontrol = NULL; | |
323 | ||
324 | list_for_each_entry(w, &dapm->card->widgets, list) { | |
1007da06 SW |
325 | if (w == kcontrolw || w->dapm != kcontrolw->dapm) |
326 | continue; | |
af46800b SW |
327 | for (i = 0; i < w->num_kcontrols; i++) { |
328 | if (&w->kcontrol_news[i] == kcontrol_new) { | |
329 | if (w->kcontrols) | |
330 | *kcontrol = w->kcontrols[i]; | |
331 | return 1; | |
332 | } | |
333 | } | |
334 | } | |
335 | ||
336 | return 0; | |
337 | } | |
338 | ||
2b97eabc | 339 | /* create new dapm mixer control */ |
4b80b8c2 | 340 | static int dapm_new_mixer(struct snd_soc_dapm_widget *w) |
2b97eabc | 341 | { |
4b80b8c2 | 342 | struct snd_soc_dapm_context *dapm = w->dapm; |
2b97eabc | 343 | int i, ret = 0; |
3e5ff4df | 344 | size_t name_len, prefix_len; |
2b97eabc | 345 | struct snd_soc_dapm_path *path; |
12ea2c78 | 346 | struct snd_card *card = dapm->card->snd_card; |
efb7ac3f | 347 | const char *prefix; |
fafd2176 SW |
348 | struct snd_soc_dapm_widget_list *wlist; |
349 | size_t wlistsize; | |
efb7ac3f MB |
350 | |
351 | if (dapm->codec) | |
352 | prefix = dapm->codec->name_prefix; | |
353 | else | |
354 | prefix = NULL; | |
2b97eabc | 355 | |
3e5ff4df MB |
356 | if (prefix) |
357 | prefix_len = strlen(prefix) + 1; | |
358 | else | |
359 | prefix_len = 0; | |
360 | ||
2b97eabc RP |
361 | /* add kcontrol */ |
362 | for (i = 0; i < w->num_kcontrols; i++) { | |
363 | ||
364 | /* match name */ | |
365 | list_for_each_entry(path, &w->sources, list_sink) { | |
366 | ||
367 | /* mixer/mux paths name must match control name */ | |
82cfecdc | 368 | if (path->name != (char *)w->kcontrol_news[i].name) |
2b97eabc RP |
369 | continue; |
370 | ||
fafd2176 SW |
371 | wlistsize = sizeof(struct snd_soc_dapm_widget_list) + |
372 | sizeof(struct snd_soc_dapm_widget *), | |
373 | wlist = kzalloc(wlistsize, GFP_KERNEL); | |
374 | if (wlist == NULL) { | |
375 | dev_err(dapm->dev, | |
376 | "asoc: can't allocate widget list for %s\n", | |
377 | w->name); | |
378 | return -ENOMEM; | |
379 | } | |
380 | wlist->num_widgets = 1; | |
381 | wlist->widgets[0] = w; | |
382 | ||
ca9c1aae IM |
383 | /* add dapm control with long name. |
384 | * for dapm_mixer this is the concatenation of the | |
385 | * mixer and kcontrol name. | |
386 | * for dapm_mixer_named_ctl this is simply the | |
387 | * kcontrol name. | |
388 | */ | |
82cfecdc | 389 | name_len = strlen(w->kcontrol_news[i].name) + 1; |
07495f3e | 390 | if (w->id != snd_soc_dapm_mixer_named_ctl) |
ca9c1aae IM |
391 | name_len += 1 + strlen(w->name); |
392 | ||
219b93f5 | 393 | path->long_name = kmalloc(name_len, GFP_KERNEL); |
ca9c1aae | 394 | |
fafd2176 SW |
395 | if (path->long_name == NULL) { |
396 | kfree(wlist); | |
2b97eabc | 397 | return -ENOMEM; |
fafd2176 | 398 | } |
2b97eabc | 399 | |
ca9c1aae | 400 | switch (w->id) { |
ca9c1aae | 401 | default: |
3e5ff4df MB |
402 | /* The control will get a prefix from |
403 | * the control creation process but | |
404 | * we're also using the same prefix | |
405 | * for widgets so cut the prefix off | |
406 | * the front of the widget name. | |
407 | */ | |
ca9c1aae | 408 | snprintf(path->long_name, name_len, "%s %s", |
3e5ff4df | 409 | w->name + prefix_len, |
82cfecdc | 410 | w->kcontrol_news[i].name); |
07495f3e | 411 | break; |
ca9c1aae IM |
412 | case snd_soc_dapm_mixer_named_ctl: |
413 | snprintf(path->long_name, name_len, "%s", | |
82cfecdc | 414 | w->kcontrol_news[i].name); |
07495f3e | 415 | break; |
ca9c1aae IM |
416 | } |
417 | ||
219b93f5 MB |
418 | path->long_name[name_len - 1] = '\0'; |
419 | ||
fafd2176 SW |
420 | path->kcontrol = snd_soc_cnew(&w->kcontrol_news[i], |
421 | wlist, path->long_name, | |
422 | prefix); | |
ce6120cc | 423 | ret = snd_ctl_add(card, path->kcontrol); |
2b97eabc | 424 | if (ret < 0) { |
f7d41ae8 JN |
425 | dev_err(dapm->dev, |
426 | "asoc: failed to add dapm kcontrol %s: %d\n", | |
427 | path->long_name, ret); | |
fafd2176 | 428 | kfree(wlist); |
2b97eabc RP |
429 | kfree(path->long_name); |
430 | path->long_name = NULL; | |
431 | return ret; | |
432 | } | |
fad59888 | 433 | w->kcontrols[i] = path->kcontrol; |
2b97eabc RP |
434 | } |
435 | } | |
436 | return ret; | |
437 | } | |
438 | ||
439 | /* create new dapm mux control */ | |
4b80b8c2 | 440 | static int dapm_new_mux(struct snd_soc_dapm_widget *w) |
2b97eabc | 441 | { |
4b80b8c2 | 442 | struct snd_soc_dapm_context *dapm = w->dapm; |
2b97eabc RP |
443 | struct snd_soc_dapm_path *path = NULL; |
444 | struct snd_kcontrol *kcontrol; | |
12ea2c78 | 445 | struct snd_card *card = dapm->card->snd_card; |
efb7ac3f | 446 | const char *prefix; |
3e5ff4df | 447 | size_t prefix_len; |
af46800b | 448 | int ret; |
fafd2176 | 449 | struct snd_soc_dapm_widget_list *wlist; |
af46800b | 450 | int shared, wlistentries; |
fafd2176 | 451 | size_t wlistsize; |
af46800b | 452 | char *name; |
2b97eabc | 453 | |
af46800b SW |
454 | if (w->num_kcontrols != 1) { |
455 | dev_err(dapm->dev, | |
456 | "asoc: mux %s has incorrect number of controls\n", | |
457 | w->name); | |
2b97eabc RP |
458 | return -EINVAL; |
459 | } | |
460 | ||
1007da06 | 461 | shared = dapm_is_shared_kcontrol(dapm, w, &w->kcontrol_news[0], |
af46800b SW |
462 | &kcontrol); |
463 | if (kcontrol) { | |
464 | wlist = kcontrol->private_data; | |
465 | wlistentries = wlist->num_widgets + 1; | |
466 | } else { | |
467 | wlist = NULL; | |
468 | wlistentries = 1; | |
469 | } | |
fafd2176 | 470 | wlistsize = sizeof(struct snd_soc_dapm_widget_list) + |
af46800b SW |
471 | wlistentries * sizeof(struct snd_soc_dapm_widget *), |
472 | wlist = krealloc(wlist, wlistsize, GFP_KERNEL); | |
fafd2176 SW |
473 | if (wlist == NULL) { |
474 | dev_err(dapm->dev, | |
475 | "asoc: can't allocate widget list for %s\n", w->name); | |
476 | return -ENOMEM; | |
477 | } | |
af46800b SW |
478 | wlist->num_widgets = wlistentries; |
479 | wlist->widgets[wlistentries - 1] = w; | |
efb7ac3f | 480 | |
af46800b SW |
481 | if (!kcontrol) { |
482 | if (dapm->codec) | |
483 | prefix = dapm->codec->name_prefix; | |
484 | else | |
485 | prefix = NULL; | |
486 | ||
487 | if (shared) { | |
488 | name = w->kcontrol_news[0].name; | |
489 | prefix_len = 0; | |
490 | } else { | |
491 | name = w->name; | |
492 | if (prefix) | |
493 | prefix_len = strlen(prefix) + 1; | |
494 | else | |
495 | prefix_len = 0; | |
496 | } | |
3e5ff4df | 497 | |
af46800b SW |
498 | /* |
499 | * The control will get a prefix from the control creation | |
500 | * process but we're also using the same prefix for widgets so | |
501 | * cut the prefix off the front of the widget name. | |
502 | */ | |
503 | kcontrol = snd_soc_cnew(&w->kcontrol_news[0], wlist, | |
504 | name + prefix_len, prefix); | |
505 | ret = snd_ctl_add(card, kcontrol); | |
506 | if (ret < 0) { | |
507 | dev_err(dapm->dev, | |
508 | "asoc: failed to add kcontrol %s\n", w->name); | |
509 | kfree(wlist); | |
510 | return ret; | |
511 | } | |
512 | } | |
ce6120cc | 513 | |
af46800b | 514 | kcontrol->private_data = wlist; |
2b97eabc | 515 | |
fad59888 SW |
516 | w->kcontrols[0] = kcontrol; |
517 | ||
2b97eabc RP |
518 | list_for_each_entry(path, &w->sources, list_sink) |
519 | path->kcontrol = kcontrol; | |
520 | ||
af46800b | 521 | return 0; |
2b97eabc RP |
522 | } |
523 | ||
524 | /* create new dapm volume control */ | |
4b80b8c2 | 525 | static int dapm_new_pga(struct snd_soc_dapm_widget *w) |
2b97eabc | 526 | { |
a6c65736 | 527 | if (w->num_kcontrols) |
f7d41ae8 JN |
528 | dev_err(w->dapm->dev, |
529 | "asoc: PGA controls not supported: '%s'\n", w->name); | |
2b97eabc | 530 | |
a6c65736 | 531 | return 0; |
2b97eabc RP |
532 | } |
533 | ||
534 | /* reset 'walked' bit for each dapm path */ | |
ce6120cc | 535 | static inline void dapm_clear_walk(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
536 | { |
537 | struct snd_soc_dapm_path *p; | |
538 | ||
8ddab3f5 | 539 | list_for_each_entry(p, &dapm->card->paths, list) |
2b97eabc RP |
540 | p->walked = 0; |
541 | } | |
542 | ||
9949788b MB |
543 | /* We implement power down on suspend by checking the power state of |
544 | * the ALSA card - when we are suspending the ALSA state for the card | |
545 | * is set to D3. | |
546 | */ | |
547 | static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget) | |
548 | { | |
12ea2c78 | 549 | int level = snd_power_get_state(widget->dapm->card->snd_card); |
9949788b | 550 | |
f0fba2ad | 551 | switch (level) { |
9949788b MB |
552 | case SNDRV_CTL_POWER_D3hot: |
553 | case SNDRV_CTL_POWER_D3cold: | |
1547aba9 | 554 | if (widget->ignore_suspend) |
f7d41ae8 JN |
555 | dev_dbg(widget->dapm->dev, "%s ignoring suspend\n", |
556 | widget->name); | |
1547aba9 | 557 | return widget->ignore_suspend; |
9949788b MB |
558 | default: |
559 | return 1; | |
560 | } | |
561 | } | |
562 | ||
2b97eabc RP |
563 | /* |
564 | * Recursively check for a completed path to an active or physically connected | |
565 | * output widget. Returns number of complete paths. | |
566 | */ | |
567 | static int is_connected_output_ep(struct snd_soc_dapm_widget *widget) | |
568 | { | |
569 | struct snd_soc_dapm_path *path; | |
570 | int con = 0; | |
571 | ||
246d0a17 MB |
572 | if (widget->id == snd_soc_dapm_supply) |
573 | return 0; | |
574 | ||
010ff262 MB |
575 | switch (widget->id) { |
576 | case snd_soc_dapm_adc: | |
577 | case snd_soc_dapm_aif_out: | |
578 | if (widget->active) | |
9949788b | 579 | return snd_soc_dapm_suspend_check(widget); |
010ff262 MB |
580 | default: |
581 | break; | |
582 | } | |
2b97eabc RP |
583 | |
584 | if (widget->connected) { | |
585 | /* connected pin ? */ | |
586 | if (widget->id == snd_soc_dapm_output && !widget->ext) | |
9949788b | 587 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
588 | |
589 | /* connected jack or spk ? */ | |
590 | if (widget->id == snd_soc_dapm_hp || widget->id == snd_soc_dapm_spk || | |
eaeae5d9 | 591 | (widget->id == snd_soc_dapm_line && !list_empty(&widget->sources))) |
9949788b | 592 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
593 | } |
594 | ||
595 | list_for_each_entry(path, &widget->sinks, list_source) { | |
596 | if (path->walked) | |
597 | continue; | |
598 | ||
599 | if (path->sink && path->connect) { | |
600 | path->walked = 1; | |
601 | con += is_connected_output_ep(path->sink); | |
602 | } | |
603 | } | |
604 | ||
605 | return con; | |
606 | } | |
607 | ||
608 | /* | |
609 | * Recursively check for a completed path to an active or physically connected | |
610 | * input widget. Returns number of complete paths. | |
611 | */ | |
612 | static int is_connected_input_ep(struct snd_soc_dapm_widget *widget) | |
613 | { | |
614 | struct snd_soc_dapm_path *path; | |
615 | int con = 0; | |
616 | ||
246d0a17 MB |
617 | if (widget->id == snd_soc_dapm_supply) |
618 | return 0; | |
619 | ||
2b97eabc | 620 | /* active stream ? */ |
010ff262 MB |
621 | switch (widget->id) { |
622 | case snd_soc_dapm_dac: | |
623 | case snd_soc_dapm_aif_in: | |
624 | if (widget->active) | |
9949788b | 625 | return snd_soc_dapm_suspend_check(widget); |
010ff262 MB |
626 | default: |
627 | break; | |
628 | } | |
2b97eabc RP |
629 | |
630 | if (widget->connected) { | |
631 | /* connected pin ? */ | |
632 | if (widget->id == snd_soc_dapm_input && !widget->ext) | |
9949788b | 633 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
634 | |
635 | /* connected VMID/Bias for lower pops */ | |
636 | if (widget->id == snd_soc_dapm_vmid) | |
9949788b | 637 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
638 | |
639 | /* connected jack ? */ | |
eaeae5d9 PU |
640 | if (widget->id == snd_soc_dapm_mic || |
641 | (widget->id == snd_soc_dapm_line && !list_empty(&widget->sinks))) | |
9949788b | 642 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
643 | } |
644 | ||
645 | list_for_each_entry(path, &widget->sources, list_sink) { | |
646 | if (path->walked) | |
647 | continue; | |
648 | ||
649 | if (path->source && path->connect) { | |
650 | path->walked = 1; | |
651 | con += is_connected_input_ep(path->source); | |
652 | } | |
653 | } | |
654 | ||
655 | return con; | |
656 | } | |
657 | ||
e2be2ccf JN |
658 | /* |
659 | * Handler for generic register modifier widget. | |
660 | */ | |
661 | int dapm_reg_event(struct snd_soc_dapm_widget *w, | |
662 | struct snd_kcontrol *kcontrol, int event) | |
663 | { | |
664 | unsigned int val; | |
665 | ||
666 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
667 | val = w->on_val; | |
668 | else | |
669 | val = w->off_val; | |
670 | ||
671 | snd_soc_update_bits(w->codec, -(w->reg + 1), | |
672 | w->mask << w->shift, val << w->shift); | |
673 | ||
674 | return 0; | |
675 | } | |
11589418 | 676 | EXPORT_SYMBOL_GPL(dapm_reg_event); |
e2be2ccf | 677 | |
cd0f2d47 MB |
678 | /* Generic check to see if a widget should be powered. |
679 | */ | |
680 | static int dapm_generic_check_power(struct snd_soc_dapm_widget *w) | |
681 | { | |
682 | int in, out; | |
683 | ||
684 | in = is_connected_input_ep(w); | |
ce6120cc | 685 | dapm_clear_walk(w->dapm); |
cd0f2d47 | 686 | out = is_connected_output_ep(w); |
ce6120cc | 687 | dapm_clear_walk(w->dapm); |
cd0f2d47 MB |
688 | return out != 0 && in != 0; |
689 | } | |
690 | ||
6ea31b9f MB |
691 | /* Check to see if an ADC has power */ |
692 | static int dapm_adc_check_power(struct snd_soc_dapm_widget *w) | |
693 | { | |
694 | int in; | |
695 | ||
696 | if (w->active) { | |
697 | in = is_connected_input_ep(w); | |
ce6120cc | 698 | dapm_clear_walk(w->dapm); |
6ea31b9f MB |
699 | return in != 0; |
700 | } else { | |
701 | return dapm_generic_check_power(w); | |
702 | } | |
703 | } | |
704 | ||
705 | /* Check to see if a DAC has power */ | |
706 | static int dapm_dac_check_power(struct snd_soc_dapm_widget *w) | |
707 | { | |
708 | int out; | |
709 | ||
710 | if (w->active) { | |
711 | out = is_connected_output_ep(w); | |
ce6120cc | 712 | dapm_clear_walk(w->dapm); |
6ea31b9f MB |
713 | return out != 0; |
714 | } else { | |
715 | return dapm_generic_check_power(w); | |
716 | } | |
717 | } | |
718 | ||
246d0a17 MB |
719 | /* Check to see if a power supply is needed */ |
720 | static int dapm_supply_check_power(struct snd_soc_dapm_widget *w) | |
721 | { | |
722 | struct snd_soc_dapm_path *path; | |
723 | int power = 0; | |
724 | ||
725 | /* Check if one of our outputs is connected */ | |
726 | list_for_each_entry(path, &w->sinks, list_source) { | |
215edda3 MB |
727 | if (path->connected && |
728 | !path->connected(path->source, path->sink)) | |
729 | continue; | |
730 | ||
3017358a MB |
731 | if (!path->sink) |
732 | continue; | |
733 | ||
734 | if (path->sink->force) { | |
735 | power = 1; | |
736 | break; | |
737 | } | |
738 | ||
739 | if (path->sink->power_check && | |
246d0a17 MB |
740 | path->sink->power_check(path->sink)) { |
741 | power = 1; | |
742 | break; | |
743 | } | |
744 | } | |
745 | ||
ce6120cc | 746 | dapm_clear_walk(w->dapm); |
246d0a17 MB |
747 | |
748 | return power; | |
749 | } | |
750 | ||
38357ab2 MB |
751 | static int dapm_seq_compare(struct snd_soc_dapm_widget *a, |
752 | struct snd_soc_dapm_widget *b, | |
828a842f | 753 | bool power_up) |
42aa3418 | 754 | { |
828a842f MB |
755 | int *sort; |
756 | ||
757 | if (power_up) | |
758 | sort = dapm_up_seq; | |
759 | else | |
760 | sort = dapm_down_seq; | |
761 | ||
38357ab2 MB |
762 | if (sort[a->id] != sort[b->id]) |
763 | return sort[a->id] - sort[b->id]; | |
20e4859d MB |
764 | if (a->subseq != b->subseq) { |
765 | if (power_up) | |
766 | return a->subseq - b->subseq; | |
767 | else | |
768 | return b->subseq - a->subseq; | |
769 | } | |
b22ead2a MB |
770 | if (a->reg != b->reg) |
771 | return a->reg - b->reg; | |
84dab567 MB |
772 | if (a->dapm != b->dapm) |
773 | return (unsigned long)a->dapm - (unsigned long)b->dapm; | |
42aa3418 | 774 | |
38357ab2 MB |
775 | return 0; |
776 | } | |
42aa3418 | 777 | |
38357ab2 MB |
778 | /* Insert a widget in order into a DAPM power sequence. */ |
779 | static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget, | |
780 | struct list_head *list, | |
828a842f | 781 | bool power_up) |
38357ab2 MB |
782 | { |
783 | struct snd_soc_dapm_widget *w; | |
784 | ||
785 | list_for_each_entry(w, list, power_list) | |
828a842f | 786 | if (dapm_seq_compare(new_widget, w, power_up) < 0) { |
38357ab2 MB |
787 | list_add_tail(&new_widget->power_list, &w->power_list); |
788 | return; | |
789 | } | |
790 | ||
791 | list_add_tail(&new_widget->power_list, list); | |
792 | } | |
793 | ||
68f89ad8 MB |
794 | static void dapm_seq_check_event(struct snd_soc_dapm_context *dapm, |
795 | struct snd_soc_dapm_widget *w, int event) | |
796 | { | |
797 | struct snd_soc_card *card = dapm->card; | |
798 | const char *ev_name; | |
799 | int power, ret; | |
800 | ||
801 | switch (event) { | |
802 | case SND_SOC_DAPM_PRE_PMU: | |
803 | ev_name = "PRE_PMU"; | |
804 | power = 1; | |
805 | break; | |
806 | case SND_SOC_DAPM_POST_PMU: | |
807 | ev_name = "POST_PMU"; | |
808 | power = 1; | |
809 | break; | |
810 | case SND_SOC_DAPM_PRE_PMD: | |
811 | ev_name = "PRE_PMD"; | |
812 | power = 0; | |
813 | break; | |
814 | case SND_SOC_DAPM_POST_PMD: | |
815 | ev_name = "POST_PMD"; | |
816 | power = 0; | |
817 | break; | |
818 | default: | |
819 | BUG(); | |
820 | return; | |
821 | } | |
822 | ||
823 | if (w->power != power) | |
824 | return; | |
825 | ||
826 | if (w->event && (w->event_flags & event)) { | |
827 | pop_dbg(dapm->dev, card->pop_time, "pop test : %s %s\n", | |
828 | w->name, ev_name); | |
84e90930 | 829 | trace_snd_soc_dapm_widget_event_start(w, event); |
68f89ad8 | 830 | ret = w->event(w, NULL, event); |
84e90930 | 831 | trace_snd_soc_dapm_widget_event_done(w, event); |
68f89ad8 MB |
832 | if (ret < 0) |
833 | pr_err("%s: %s event failed: %d\n", | |
834 | ev_name, w->name, ret); | |
835 | } | |
836 | } | |
837 | ||
b22ead2a | 838 | /* Apply the coalesced changes from a DAPM sequence */ |
ce6120cc | 839 | static void dapm_seq_run_coalesced(struct snd_soc_dapm_context *dapm, |
b22ead2a | 840 | struct list_head *pending) |
163cac06 | 841 | { |
3a45b867 | 842 | struct snd_soc_card *card = dapm->card; |
68f89ad8 MB |
843 | struct snd_soc_dapm_widget *w; |
844 | int reg, power; | |
b22ead2a MB |
845 | unsigned int value = 0; |
846 | unsigned int mask = 0; | |
847 | unsigned int cur_mask; | |
848 | ||
849 | reg = list_first_entry(pending, struct snd_soc_dapm_widget, | |
850 | power_list)->reg; | |
851 | ||
852 | list_for_each_entry(w, pending, power_list) { | |
853 | cur_mask = 1 << w->shift; | |
854 | BUG_ON(reg != w->reg); | |
855 | ||
856 | if (w->invert) | |
857 | power = !w->power; | |
858 | else | |
859 | power = w->power; | |
860 | ||
861 | mask |= cur_mask; | |
862 | if (power) | |
863 | value |= cur_mask; | |
864 | ||
fd8d3bc0 | 865 | pop_dbg(dapm->dev, card->pop_time, |
b22ead2a MB |
866 | "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n", |
867 | w->name, reg, value, mask); | |
81628103 | 868 | |
68f89ad8 MB |
869 | /* Check for events */ |
870 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMU); | |
871 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMD); | |
81628103 MB |
872 | } |
873 | ||
874 | if (reg >= 0) { | |
fd8d3bc0 | 875 | pop_dbg(dapm->dev, card->pop_time, |
81628103 | 876 | "pop test : Applying 0x%x/0x%x to %x in %dms\n", |
3a45b867 JN |
877 | value, mask, reg, card->pop_time); |
878 | pop_wait(card->pop_time); | |
ce6120cc | 879 | snd_soc_update_bits(dapm->codec, reg, mask, value); |
b22ead2a MB |
880 | } |
881 | ||
81628103 | 882 | list_for_each_entry(w, pending, power_list) { |
68f89ad8 MB |
883 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMU); |
884 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMD); | |
81628103 | 885 | } |
b22ead2a | 886 | } |
42aa3418 | 887 | |
b22ead2a MB |
888 | /* Apply a DAPM power sequence. |
889 | * | |
890 | * We walk over a pre-sorted list of widgets to apply power to. In | |
891 | * order to minimise the number of writes to the device required | |
892 | * multiple widgets will be updated in a single write where possible. | |
893 | * Currently anything that requires more than a single write is not | |
894 | * handled. | |
895 | */ | |
ce6120cc | 896 | static void dapm_seq_run(struct snd_soc_dapm_context *dapm, |
828a842f | 897 | struct list_head *list, int event, bool power_up) |
b22ead2a MB |
898 | { |
899 | struct snd_soc_dapm_widget *w, *n; | |
900 | LIST_HEAD(pending); | |
901 | int cur_sort = -1; | |
20e4859d | 902 | int cur_subseq = -1; |
b22ead2a | 903 | int cur_reg = SND_SOC_NOPM; |
7be31be8 | 904 | struct snd_soc_dapm_context *cur_dapm = NULL; |
474b62d6 | 905 | int ret, i; |
828a842f MB |
906 | int *sort; |
907 | ||
908 | if (power_up) | |
909 | sort = dapm_up_seq; | |
910 | else | |
911 | sort = dapm_down_seq; | |
163cac06 | 912 | |
b22ead2a MB |
913 | list_for_each_entry_safe(w, n, list, power_list) { |
914 | ret = 0; | |
915 | ||
916 | /* Do we need to apply any queued changes? */ | |
7be31be8 | 917 | if (sort[w->id] != cur_sort || w->reg != cur_reg || |
20e4859d | 918 | w->dapm != cur_dapm || w->subseq != cur_subseq) { |
b22ead2a | 919 | if (!list_empty(&pending)) |
7be31be8 | 920 | dapm_seq_run_coalesced(cur_dapm, &pending); |
b22ead2a | 921 | |
474b62d6 MB |
922 | if (cur_dapm && cur_dapm->seq_notifier) { |
923 | for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++) | |
924 | if (sort[i] == cur_sort) | |
925 | cur_dapm->seq_notifier(cur_dapm, | |
f85a9e0d MB |
926 | i, |
927 | cur_subseq); | |
474b62d6 MB |
928 | } |
929 | ||
b22ead2a MB |
930 | INIT_LIST_HEAD(&pending); |
931 | cur_sort = -1; | |
20e4859d | 932 | cur_subseq = -1; |
b22ead2a | 933 | cur_reg = SND_SOC_NOPM; |
7be31be8 | 934 | cur_dapm = NULL; |
b22ead2a MB |
935 | } |
936 | ||
163cac06 MB |
937 | switch (w->id) { |
938 | case snd_soc_dapm_pre: | |
939 | if (!w->event) | |
b22ead2a MB |
940 | list_for_each_entry_safe_continue(w, n, list, |
941 | power_list); | |
163cac06 | 942 | |
b22ead2a | 943 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
944 | ret = w->event(w, |
945 | NULL, SND_SOC_DAPM_PRE_PMU); | |
b22ead2a | 946 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
947 | ret = w->event(w, |
948 | NULL, SND_SOC_DAPM_PRE_PMD); | |
163cac06 MB |
949 | break; |
950 | ||
951 | case snd_soc_dapm_post: | |
952 | if (!w->event) | |
b22ead2a MB |
953 | list_for_each_entry_safe_continue(w, n, list, |
954 | power_list); | |
163cac06 | 955 | |
b22ead2a | 956 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
957 | ret = w->event(w, |
958 | NULL, SND_SOC_DAPM_POST_PMU); | |
b22ead2a | 959 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
960 | ret = w->event(w, |
961 | NULL, SND_SOC_DAPM_POST_PMD); | |
163cac06 MB |
962 | break; |
963 | ||
b22ead2a | 964 | default: |
81628103 MB |
965 | /* Queue it up for application */ |
966 | cur_sort = sort[w->id]; | |
20e4859d | 967 | cur_subseq = w->subseq; |
81628103 | 968 | cur_reg = w->reg; |
7be31be8 | 969 | cur_dapm = w->dapm; |
81628103 MB |
970 | list_move(&w->power_list, &pending); |
971 | break; | |
163cac06 | 972 | } |
b22ead2a MB |
973 | |
974 | if (ret < 0) | |
f7d41ae8 JN |
975 | dev_err(w->dapm->dev, |
976 | "Failed to apply widget power: %d\n", ret); | |
6ea31b9f | 977 | } |
b22ead2a MB |
978 | |
979 | if (!list_empty(&pending)) | |
28e86808 | 980 | dapm_seq_run_coalesced(cur_dapm, &pending); |
474b62d6 MB |
981 | |
982 | if (cur_dapm && cur_dapm->seq_notifier) { | |
983 | for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++) | |
984 | if (sort[i] == cur_sort) | |
985 | cur_dapm->seq_notifier(cur_dapm, | |
f85a9e0d | 986 | i, cur_subseq); |
474b62d6 | 987 | } |
42aa3418 MB |
988 | } |
989 | ||
97404f2e MB |
990 | static void dapm_widget_update(struct snd_soc_dapm_context *dapm) |
991 | { | |
992 | struct snd_soc_dapm_update *update = dapm->update; | |
993 | struct snd_soc_dapm_widget *w; | |
994 | int ret; | |
995 | ||
996 | if (!update) | |
997 | return; | |
998 | ||
999 | w = update->widget; | |
1000 | ||
1001 | if (w->event && | |
1002 | (w->event_flags & SND_SOC_DAPM_PRE_REG)) { | |
1003 | ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG); | |
1004 | if (ret != 0) | |
1005 | pr_err("%s DAPM pre-event failed: %d\n", | |
1006 | w->name, ret); | |
1007 | } | |
1008 | ||
1009 | ret = snd_soc_update_bits(w->codec, update->reg, update->mask, | |
1010 | update->val); | |
1011 | if (ret < 0) | |
1012 | pr_err("%s DAPM update failed: %d\n", w->name, ret); | |
1013 | ||
1014 | if (w->event && | |
1015 | (w->event_flags & SND_SOC_DAPM_POST_REG)) { | |
1016 | ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG); | |
1017 | if (ret != 0) | |
1018 | pr_err("%s DAPM post-event failed: %d\n", | |
1019 | w->name, ret); | |
1020 | } | |
1021 | } | |
1022 | ||
9d0624a7 MB |
1023 | /* Async callback run prior to DAPM sequences - brings to _PREPARE if |
1024 | * they're changing state. | |
1025 | */ | |
1026 | static void dapm_pre_sequence_async(void *data, async_cookie_t cookie) | |
1027 | { | |
1028 | struct snd_soc_dapm_context *d = data; | |
1029 | int ret; | |
1030 | ||
56fba41f MB |
1031 | /* If we're off and we're not supposed to be go into STANDBY */ |
1032 | if (d->bias_level == SND_SOC_BIAS_OFF && | |
1033 | d->target_bias_level != SND_SOC_BIAS_OFF) { | |
9d0624a7 MB |
1034 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY); |
1035 | if (ret != 0) | |
1036 | dev_err(d->dev, | |
1037 | "Failed to turn on bias: %d\n", ret); | |
1038 | } | |
1039 | ||
56fba41f MB |
1040 | /* Prepare for a STADDBY->ON or ON->STANDBY transition */ |
1041 | if (d->bias_level != d->target_bias_level) { | |
9d0624a7 MB |
1042 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE); |
1043 | if (ret != 0) | |
1044 | dev_err(d->dev, | |
1045 | "Failed to prepare bias: %d\n", ret); | |
1046 | } | |
1047 | } | |
1048 | ||
1049 | /* Async callback run prior to DAPM sequences - brings to their final | |
1050 | * state. | |
1051 | */ | |
1052 | static void dapm_post_sequence_async(void *data, async_cookie_t cookie) | |
1053 | { | |
1054 | struct snd_soc_dapm_context *d = data; | |
1055 | int ret; | |
1056 | ||
1057 | /* If we just powered the last thing off drop to standby bias */ | |
56fba41f MB |
1058 | if (d->bias_level == SND_SOC_BIAS_PREPARE && |
1059 | (d->target_bias_level == SND_SOC_BIAS_STANDBY || | |
1060 | d->target_bias_level == SND_SOC_BIAS_OFF)) { | |
9d0624a7 MB |
1061 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY); |
1062 | if (ret != 0) | |
1063 | dev_err(d->dev, "Failed to apply standby bias: %d\n", | |
1064 | ret); | |
1065 | } | |
97404f2e | 1066 | |
9d0624a7 | 1067 | /* If we're in standby and can support bias off then do that */ |
56fba41f MB |
1068 | if (d->bias_level == SND_SOC_BIAS_STANDBY && |
1069 | d->target_bias_level == SND_SOC_BIAS_OFF) { | |
9d0624a7 MB |
1070 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF); |
1071 | if (ret != 0) | |
1072 | dev_err(d->dev, "Failed to turn off bias: %d\n", ret); | |
1073 | } | |
1074 | ||
1075 | /* If we just powered up then move to active bias */ | |
56fba41f MB |
1076 | if (d->bias_level == SND_SOC_BIAS_PREPARE && |
1077 | d->target_bias_level == SND_SOC_BIAS_ON) { | |
9d0624a7 MB |
1078 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON); |
1079 | if (ret != 0) | |
1080 | dev_err(d->dev, "Failed to apply active bias: %d\n", | |
1081 | ret); | |
1082 | } | |
1083 | } | |
97404f2e | 1084 | |
2b97eabc RP |
1085 | /* |
1086 | * Scan each dapm widget for complete audio path. | |
1087 | * A complete path is a route that has valid endpoints i.e.:- | |
1088 | * | |
1089 | * o DAC to output pin. | |
1090 | * o Input Pin to ADC. | |
1091 | * o Input pin to Output pin (bypass, sidetone) | |
1092 | * o DAC to ADC (loopback). | |
1093 | */ | |
ce6120cc | 1094 | static int dapm_power_widgets(struct snd_soc_dapm_context *dapm, int event) |
2b97eabc | 1095 | { |
12ea2c78 | 1096 | struct snd_soc_card *card = dapm->card; |
2b97eabc | 1097 | struct snd_soc_dapm_widget *w; |
7be31be8 | 1098 | struct snd_soc_dapm_context *d; |
291f3bbc MB |
1099 | LIST_HEAD(up_list); |
1100 | LIST_HEAD(down_list); | |
9d0624a7 | 1101 | LIST_HEAD(async_domain); |
56fba41f | 1102 | enum snd_soc_bias_level bias; |
38357ab2 | 1103 | int power; |
6d3ddc81 | 1104 | |
84e90930 MB |
1105 | trace_snd_soc_dapm_start(card); |
1106 | ||
56fba41f MB |
1107 | list_for_each_entry(d, &card->dapm_list, list) { |
1108 | if (d->n_widgets || d->codec == NULL) { | |
1109 | if (d->idle_bias_off) | |
1110 | d->target_bias_level = SND_SOC_BIAS_OFF; | |
1111 | else | |
1112 | d->target_bias_level = SND_SOC_BIAS_STANDBY; | |
1113 | } | |
1114 | } | |
7be31be8 | 1115 | |
6d3ddc81 MB |
1116 | /* Check which widgets we need to power and store them in |
1117 | * lists indicating if they should be powered up or down. | |
1118 | */ | |
97c866de | 1119 | list_for_each_entry(w, &card->widgets, list) { |
6d3ddc81 MB |
1120 | switch (w->id) { |
1121 | case snd_soc_dapm_pre: | |
828a842f | 1122 | dapm_seq_insert(w, &down_list, false); |
6d3ddc81 MB |
1123 | break; |
1124 | case snd_soc_dapm_post: | |
828a842f | 1125 | dapm_seq_insert(w, &up_list, true); |
6d3ddc81 MB |
1126 | break; |
1127 | ||
1128 | default: | |
1129 | if (!w->power_check) | |
1130 | continue; | |
1131 | ||
9949788b | 1132 | if (!w->force) |
50b6bce5 | 1133 | power = w->power_check(w); |
9949788b MB |
1134 | else |
1135 | power = 1; | |
dfcc9047 MB |
1136 | |
1137 | if (power) { | |
1138 | d = w->dapm; | |
1139 | ||
1140 | /* Supplies and micbiases only bring | |
1141 | * the context up to STANDBY as unless | |
1142 | * something else is active and | |
1143 | * passing audio they generally don't | |
1144 | * require full power. | |
1145 | */ | |
1146 | switch (w->id) { | |
1147 | case snd_soc_dapm_supply: | |
1148 | case snd_soc_dapm_micbias: | |
1149 | if (d->target_bias_level < SND_SOC_BIAS_STANDBY) | |
1150 | d->target_bias_level = SND_SOC_BIAS_STANDBY; | |
1151 | break; | |
1152 | default: | |
1153 | d->target_bias_level = SND_SOC_BIAS_ON; | |
1154 | break; | |
1155 | } | |
1156 | } | |
452c5eaa | 1157 | |
6d3ddc81 MB |
1158 | if (w->power == power) |
1159 | continue; | |
1160 | ||
84e90930 MB |
1161 | trace_snd_soc_dapm_widget_power(w, power); |
1162 | ||
6d3ddc81 | 1163 | if (power) |
828a842f | 1164 | dapm_seq_insert(w, &up_list, true); |
6d3ddc81 | 1165 | else |
828a842f | 1166 | dapm_seq_insert(w, &down_list, false); |
6d3ddc81 MB |
1167 | |
1168 | w->power = power; | |
1169 | break; | |
1170 | } | |
2b97eabc RP |
1171 | } |
1172 | ||
b14b76a5 MB |
1173 | /* If there are no DAPM widgets then try to figure out power from the |
1174 | * event type. | |
1175 | */ | |
97c866de | 1176 | if (!dapm->n_widgets) { |
b14b76a5 MB |
1177 | switch (event) { |
1178 | case SND_SOC_DAPM_STREAM_START: | |
1179 | case SND_SOC_DAPM_STREAM_RESUME: | |
56fba41f | 1180 | dapm->target_bias_level = SND_SOC_BIAS_ON; |
b14b76a5 | 1181 | break; |
862af8ad | 1182 | case SND_SOC_DAPM_STREAM_STOP: |
56fba41f MB |
1183 | if (dapm->codec->active) |
1184 | dapm->target_bias_level = SND_SOC_BIAS_ON; | |
1185 | else | |
1186 | dapm->target_bias_level = SND_SOC_BIAS_STANDBY; | |
862af8ad | 1187 | break; |
50b6bce5 | 1188 | case SND_SOC_DAPM_STREAM_SUSPEND: |
56fba41f | 1189 | dapm->target_bias_level = SND_SOC_BIAS_STANDBY; |
50b6bce5 | 1190 | break; |
b14b76a5 | 1191 | case SND_SOC_DAPM_STREAM_NOP: |
56fba41f | 1192 | dapm->target_bias_level = dapm->bias_level; |
50b6bce5 | 1193 | break; |
b14b76a5 MB |
1194 | default: |
1195 | break; | |
1196 | } | |
1197 | } | |
1198 | ||
52ba67bf | 1199 | /* Force all contexts in the card to the same bias state */ |
56fba41f | 1200 | bias = SND_SOC_BIAS_OFF; |
52ba67bf | 1201 | list_for_each_entry(d, &card->dapm_list, list) |
56fba41f MB |
1202 | if (d->target_bias_level > bias) |
1203 | bias = d->target_bias_level; | |
52ba67bf | 1204 | list_for_each_entry(d, &card->dapm_list, list) |
56fba41f | 1205 | d->target_bias_level = bias; |
52ba67bf MB |
1206 | |
1207 | ||
9d0624a7 MB |
1208 | /* Run all the bias changes in parallel */ |
1209 | list_for_each_entry(d, &dapm->card->dapm_list, list) | |
1210 | async_schedule_domain(dapm_pre_sequence_async, d, | |
1211 | &async_domain); | |
1212 | async_synchronize_full_domain(&async_domain); | |
452c5eaa | 1213 | |
6d3ddc81 | 1214 | /* Power down widgets first; try to avoid amplifying pops. */ |
828a842f | 1215 | dapm_seq_run(dapm, &down_list, event, false); |
2b97eabc | 1216 | |
97404f2e MB |
1217 | dapm_widget_update(dapm); |
1218 | ||
6d3ddc81 | 1219 | /* Now power up. */ |
828a842f | 1220 | dapm_seq_run(dapm, &up_list, event, true); |
2b97eabc | 1221 | |
9d0624a7 MB |
1222 | /* Run all the bias changes in parallel */ |
1223 | list_for_each_entry(d, &dapm->card->dapm_list, list) | |
1224 | async_schedule_domain(dapm_post_sequence_async, d, | |
1225 | &async_domain); | |
1226 | async_synchronize_full_domain(&async_domain); | |
452c5eaa | 1227 | |
fd8d3bc0 JN |
1228 | pop_dbg(dapm->dev, card->pop_time, |
1229 | "DAPM sequencing finished, waiting %dms\n", card->pop_time); | |
3a45b867 | 1230 | pop_wait(card->pop_time); |
cb507e7e | 1231 | |
84e90930 MB |
1232 | trace_snd_soc_dapm_done(card); |
1233 | ||
42aa3418 | 1234 | return 0; |
2b97eabc RP |
1235 | } |
1236 | ||
79fb9387 MB |
1237 | #ifdef CONFIG_DEBUG_FS |
1238 | static int dapm_widget_power_open_file(struct inode *inode, struct file *file) | |
1239 | { | |
1240 | file->private_data = inode->i_private; | |
1241 | return 0; | |
1242 | } | |
1243 | ||
1244 | static ssize_t dapm_widget_power_read_file(struct file *file, | |
1245 | char __user *user_buf, | |
1246 | size_t count, loff_t *ppos) | |
1247 | { | |
1248 | struct snd_soc_dapm_widget *w = file->private_data; | |
1249 | char *buf; | |
1250 | int in, out; | |
1251 | ssize_t ret; | |
1252 | struct snd_soc_dapm_path *p = NULL; | |
1253 | ||
1254 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); | |
1255 | if (!buf) | |
1256 | return -ENOMEM; | |
1257 | ||
1258 | in = is_connected_input_ep(w); | |
ce6120cc | 1259 | dapm_clear_walk(w->dapm); |
79fb9387 | 1260 | out = is_connected_output_ep(w); |
ce6120cc | 1261 | dapm_clear_walk(w->dapm); |
79fb9387 | 1262 | |
d033c36a | 1263 | ret = snprintf(buf, PAGE_SIZE, "%s: %s in %d out %d", |
79fb9387 MB |
1264 | w->name, w->power ? "On" : "Off", in, out); |
1265 | ||
d033c36a MB |
1266 | if (w->reg >= 0) |
1267 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
1268 | " - R%d(0x%x) bit %d", | |
1269 | w->reg, w->reg, w->shift); | |
1270 | ||
1271 | ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n"); | |
1272 | ||
3eef08ba MB |
1273 | if (w->sname) |
1274 | ret += snprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n", | |
1275 | w->sname, | |
1276 | w->active ? "active" : "inactive"); | |
79fb9387 MB |
1277 | |
1278 | list_for_each_entry(p, &w->sources, list_sink) { | |
215edda3 MB |
1279 | if (p->connected && !p->connected(w, p->sink)) |
1280 | continue; | |
1281 | ||
79fb9387 MB |
1282 | if (p->connect) |
1283 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
67f5ed6e | 1284 | " in \"%s\" \"%s\"\n", |
79fb9387 MB |
1285 | p->name ? p->name : "static", |
1286 | p->source->name); | |
1287 | } | |
1288 | list_for_each_entry(p, &w->sinks, list_source) { | |
215edda3 MB |
1289 | if (p->connected && !p->connected(w, p->sink)) |
1290 | continue; | |
1291 | ||
79fb9387 MB |
1292 | if (p->connect) |
1293 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
67f5ed6e | 1294 | " out \"%s\" \"%s\"\n", |
79fb9387 MB |
1295 | p->name ? p->name : "static", |
1296 | p->sink->name); | |
1297 | } | |
1298 | ||
1299 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); | |
1300 | ||
1301 | kfree(buf); | |
1302 | return ret; | |
1303 | } | |
1304 | ||
1305 | static const struct file_operations dapm_widget_power_fops = { | |
1306 | .open = dapm_widget_power_open_file, | |
1307 | .read = dapm_widget_power_read_file, | |
6038f373 | 1308 | .llseek = default_llseek, |
79fb9387 MB |
1309 | }; |
1310 | ||
ef49e4fa MB |
1311 | static int dapm_bias_open_file(struct inode *inode, struct file *file) |
1312 | { | |
1313 | file->private_data = inode->i_private; | |
1314 | return 0; | |
1315 | } | |
1316 | ||
1317 | static ssize_t dapm_bias_read_file(struct file *file, char __user *user_buf, | |
1318 | size_t count, loff_t *ppos) | |
1319 | { | |
1320 | struct snd_soc_dapm_context *dapm = file->private_data; | |
1321 | char *level; | |
1322 | ||
1323 | switch (dapm->bias_level) { | |
1324 | case SND_SOC_BIAS_ON: | |
1325 | level = "On\n"; | |
1326 | break; | |
1327 | case SND_SOC_BIAS_PREPARE: | |
1328 | level = "Prepare\n"; | |
1329 | break; | |
1330 | case SND_SOC_BIAS_STANDBY: | |
1331 | level = "Standby\n"; | |
1332 | break; | |
1333 | case SND_SOC_BIAS_OFF: | |
1334 | level = "Off\n"; | |
1335 | break; | |
1336 | default: | |
1337 | BUG(); | |
1338 | level = "Unknown\n"; | |
1339 | break; | |
1340 | } | |
1341 | ||
1342 | return simple_read_from_buffer(user_buf, count, ppos, level, | |
1343 | strlen(level)); | |
1344 | } | |
1345 | ||
1346 | static const struct file_operations dapm_bias_fops = { | |
1347 | .open = dapm_bias_open_file, | |
1348 | .read = dapm_bias_read_file, | |
1349 | .llseek = default_llseek, | |
1350 | }; | |
1351 | ||
8eecaf62 LPC |
1352 | void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm, |
1353 | struct dentry *parent) | |
79fb9387 | 1354 | { |
79fb9387 MB |
1355 | struct dentry *d; |
1356 | ||
8eecaf62 LPC |
1357 | dapm->debugfs_dapm = debugfs_create_dir("dapm", parent); |
1358 | ||
1359 | if (!dapm->debugfs_dapm) { | |
1360 | printk(KERN_WARNING | |
1361 | "Failed to create DAPM debugfs directory\n"); | |
79fb9387 | 1362 | return; |
8eecaf62 | 1363 | } |
79fb9387 | 1364 | |
ef49e4fa MB |
1365 | d = debugfs_create_file("bias_level", 0444, |
1366 | dapm->debugfs_dapm, dapm, | |
1367 | &dapm_bias_fops); | |
1368 | if (!d) | |
1369 | dev_warn(dapm->dev, | |
1370 | "ASoC: Failed to create bias level debugfs file\n"); | |
d5d1e0be | 1371 | } |
ef49e4fa | 1372 | |
d5d1e0be LPC |
1373 | static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w) |
1374 | { | |
1375 | struct snd_soc_dapm_context *dapm = w->dapm; | |
1376 | struct dentry *d; | |
79fb9387 | 1377 | |
d5d1e0be LPC |
1378 | if (!dapm->debugfs_dapm || !w->name) |
1379 | return; | |
1380 | ||
1381 | d = debugfs_create_file(w->name, 0444, | |
1382 | dapm->debugfs_dapm, w, | |
1383 | &dapm_widget_power_fops); | |
1384 | if (!d) | |
1385 | dev_warn(w->dapm->dev, | |
1386 | "ASoC: Failed to create %s debugfs file\n", | |
1387 | w->name); | |
79fb9387 | 1388 | } |
d5d1e0be | 1389 | |
6c45e126 LPC |
1390 | static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm) |
1391 | { | |
1392 | debugfs_remove_recursive(dapm->debugfs_dapm); | |
1393 | } | |
1394 | ||
79fb9387 | 1395 | #else |
8eecaf62 LPC |
1396 | void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm, |
1397 | struct dentry *parent) | |
79fb9387 MB |
1398 | { |
1399 | } | |
d5d1e0be LPC |
1400 | |
1401 | static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w) | |
1402 | { | |
1403 | } | |
1404 | ||
6c45e126 LPC |
1405 | static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm) |
1406 | { | |
1407 | } | |
1408 | ||
79fb9387 MB |
1409 | #endif |
1410 | ||
2b97eabc | 1411 | /* test and update the power status of a mux widget */ |
d9c96cf3 | 1412 | static int dapm_mux_update_power(struct snd_soc_dapm_widget *widget, |
3a65577d MB |
1413 | struct snd_kcontrol *kcontrol, int change, |
1414 | int mux, struct soc_enum *e) | |
2b97eabc RP |
1415 | { |
1416 | struct snd_soc_dapm_path *path; | |
1417 | int found = 0; | |
1418 | ||
eff317d0 | 1419 | if (widget->id != snd_soc_dapm_mux && |
24ff33ac | 1420 | widget->id != snd_soc_dapm_virt_mux && |
eff317d0 | 1421 | widget->id != snd_soc_dapm_value_mux) |
2b97eabc RP |
1422 | return -ENODEV; |
1423 | ||
3a65577d | 1424 | if (!change) |
2b97eabc RP |
1425 | return 0; |
1426 | ||
1427 | /* find dapm widget path assoc with kcontrol */ | |
8ddab3f5 | 1428 | list_for_each_entry(path, &widget->dapm->card->paths, list) { |
2b97eabc RP |
1429 | if (path->kcontrol != kcontrol) |
1430 | continue; | |
1431 | ||
cb01e2b9 | 1432 | if (!path->name || !e->texts[mux]) |
2b97eabc RP |
1433 | continue; |
1434 | ||
1435 | found = 1; | |
1436 | /* we now need to match the string in the enum to the path */ | |
cb01e2b9 | 1437 | if (!(strcmp(path->name, e->texts[mux]))) |
2b97eabc RP |
1438 | path->connect = 1; /* new connection */ |
1439 | else | |
1440 | path->connect = 0; /* old connection must be powered down */ | |
1441 | } | |
1442 | ||
b91b8fa0 | 1443 | if (found) |
ce6120cc | 1444 | dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc RP |
1445 | |
1446 | return 0; | |
1447 | } | |
2b97eabc | 1448 | |
1b075e3f | 1449 | /* test and update the power status of a mixer or switch widget */ |
d9c96cf3 | 1450 | static int dapm_mixer_update_power(struct snd_soc_dapm_widget *widget, |
283375ce | 1451 | struct snd_kcontrol *kcontrol, int connect) |
2b97eabc RP |
1452 | { |
1453 | struct snd_soc_dapm_path *path; | |
1454 | int found = 0; | |
1455 | ||
1b075e3f | 1456 | if (widget->id != snd_soc_dapm_mixer && |
ca9c1aae | 1457 | widget->id != snd_soc_dapm_mixer_named_ctl && |
1b075e3f | 1458 | widget->id != snd_soc_dapm_switch) |
2b97eabc RP |
1459 | return -ENODEV; |
1460 | ||
2b97eabc | 1461 | /* find dapm widget path assoc with kcontrol */ |
8ddab3f5 | 1462 | list_for_each_entry(path, &widget->dapm->card->paths, list) { |
2b97eabc RP |
1463 | if (path->kcontrol != kcontrol) |
1464 | continue; | |
1465 | ||
1466 | /* found, now check type */ | |
1467 | found = 1; | |
283375ce | 1468 | path->connect = connect; |
2b97eabc RP |
1469 | break; |
1470 | } | |
1471 | ||
b91b8fa0 | 1472 | if (found) |
ce6120cc | 1473 | dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc RP |
1474 | |
1475 | return 0; | |
1476 | } | |
2b97eabc RP |
1477 | |
1478 | /* show dapm widget status in sys fs */ | |
1479 | static ssize_t dapm_widget_show(struct device *dev, | |
1480 | struct device_attribute *attr, char *buf) | |
1481 | { | |
f0fba2ad LG |
1482 | struct snd_soc_pcm_runtime *rtd = |
1483 | container_of(dev, struct snd_soc_pcm_runtime, dev); | |
1484 | struct snd_soc_codec *codec =rtd->codec; | |
2b97eabc RP |
1485 | struct snd_soc_dapm_widget *w; |
1486 | int count = 0; | |
1487 | char *state = "not set"; | |
1488 | ||
97c866de JN |
1489 | list_for_each_entry(w, &codec->card->widgets, list) { |
1490 | if (w->dapm != &codec->dapm) | |
1491 | continue; | |
2b97eabc RP |
1492 | |
1493 | /* only display widgets that burnm power */ | |
1494 | switch (w->id) { | |
1495 | case snd_soc_dapm_hp: | |
1496 | case snd_soc_dapm_mic: | |
1497 | case snd_soc_dapm_spk: | |
1498 | case snd_soc_dapm_line: | |
1499 | case snd_soc_dapm_micbias: | |
1500 | case snd_soc_dapm_dac: | |
1501 | case snd_soc_dapm_adc: | |
1502 | case snd_soc_dapm_pga: | |
d88429a6 | 1503 | case snd_soc_dapm_out_drv: |
2b97eabc | 1504 | case snd_soc_dapm_mixer: |
ca9c1aae | 1505 | case snd_soc_dapm_mixer_named_ctl: |
246d0a17 | 1506 | case snd_soc_dapm_supply: |
2b97eabc RP |
1507 | if (w->name) |
1508 | count += sprintf(buf + count, "%s: %s\n", | |
1509 | w->name, w->power ? "On":"Off"); | |
1510 | break; | |
1511 | default: | |
1512 | break; | |
1513 | } | |
1514 | } | |
1515 | ||
ce6120cc | 1516 | switch (codec->dapm.bias_level) { |
0be9898a MB |
1517 | case SND_SOC_BIAS_ON: |
1518 | state = "On"; | |
2b97eabc | 1519 | break; |
0be9898a MB |
1520 | case SND_SOC_BIAS_PREPARE: |
1521 | state = "Prepare"; | |
2b97eabc | 1522 | break; |
0be9898a MB |
1523 | case SND_SOC_BIAS_STANDBY: |
1524 | state = "Standby"; | |
2b97eabc | 1525 | break; |
0be9898a MB |
1526 | case SND_SOC_BIAS_OFF: |
1527 | state = "Off"; | |
2b97eabc RP |
1528 | break; |
1529 | } | |
1530 | count += sprintf(buf + count, "PM State: %s\n", state); | |
1531 | ||
1532 | return count; | |
1533 | } | |
1534 | ||
1535 | static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL); | |
1536 | ||
1537 | int snd_soc_dapm_sys_add(struct device *dev) | |
1538 | { | |
12ef193d | 1539 | return device_create_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1540 | } |
1541 | ||
1542 | static void snd_soc_dapm_sys_remove(struct device *dev) | |
1543 | { | |
aef90843 | 1544 | device_remove_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1545 | } |
1546 | ||
1547 | /* free all dapm widgets and resources */ | |
ce6120cc | 1548 | static void dapm_free_widgets(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
1549 | { |
1550 | struct snd_soc_dapm_widget *w, *next_w; | |
1551 | struct snd_soc_dapm_path *p, *next_p; | |
1552 | ||
97c866de JN |
1553 | list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) { |
1554 | if (w->dapm != dapm) | |
1555 | continue; | |
2b97eabc | 1556 | list_del(&w->list); |
8ddab3f5 JN |
1557 | /* |
1558 | * remove source and sink paths associated to this widget. | |
1559 | * While removing the path, remove reference to it from both | |
1560 | * source and sink widgets so that path is removed only once. | |
1561 | */ | |
1562 | list_for_each_entry_safe(p, next_p, &w->sources, list_sink) { | |
1563 | list_del(&p->list_sink); | |
1564 | list_del(&p->list_source); | |
1565 | list_del(&p->list); | |
1566 | kfree(p->long_name); | |
1567 | kfree(p); | |
1568 | } | |
1569 | list_for_each_entry_safe(p, next_p, &w->sinks, list_source) { | |
1570 | list_del(&p->list_sink); | |
1571 | list_del(&p->list_source); | |
1572 | list_del(&p->list); | |
1573 | kfree(p->long_name); | |
1574 | kfree(p); | |
1575 | } | |
fad59888 | 1576 | kfree(w->kcontrols); |
ead9b919 | 1577 | kfree(w->name); |
2b97eabc RP |
1578 | kfree(w); |
1579 | } | |
2b97eabc RP |
1580 | } |
1581 | ||
91a5fca4 LPC |
1582 | static struct snd_soc_dapm_widget *dapm_find_widget( |
1583 | struct snd_soc_dapm_context *dapm, const char *pin, | |
1584 | bool search_other_contexts) | |
a5302181 LG |
1585 | { |
1586 | struct snd_soc_dapm_widget *w; | |
91a5fca4 | 1587 | struct snd_soc_dapm_widget *fallback = NULL; |
a5302181 | 1588 | |
97c866de | 1589 | list_for_each_entry(w, &dapm->card->widgets, list) { |
a5302181 | 1590 | if (!strcmp(w->name, pin)) { |
91a5fca4 LPC |
1591 | if (w->dapm == dapm) |
1592 | return w; | |
1593 | else | |
1594 | fallback = w; | |
a5302181 LG |
1595 | } |
1596 | } | |
1597 | ||
91a5fca4 LPC |
1598 | if (search_other_contexts) |
1599 | return fallback; | |
1600 | ||
1601 | return NULL; | |
1602 | } | |
1603 | ||
1604 | static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm, | |
1605 | const char *pin, int status) | |
1606 | { | |
1607 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); | |
1608 | ||
1609 | if (!w) { | |
1610 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); | |
1611 | return -EINVAL; | |
0d86733c MB |
1612 | } |
1613 | ||
91a5fca4 LPC |
1614 | w->connected = status; |
1615 | if (status == 0) | |
1616 | w->force = 0; | |
1617 | ||
1618 | return 0; | |
a5302181 LG |
1619 | } |
1620 | ||
2b97eabc | 1621 | /** |
a5302181 | 1622 | * snd_soc_dapm_sync - scan and power dapm paths |
ce6120cc | 1623 | * @dapm: DAPM context |
2b97eabc RP |
1624 | * |
1625 | * Walks all dapm audio paths and powers widgets according to their | |
1626 | * stream or path usage. | |
1627 | * | |
1628 | * Returns 0 for success. | |
1629 | */ | |
ce6120cc | 1630 | int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm) |
2b97eabc | 1631 | { |
ce6120cc | 1632 | return dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc | 1633 | } |
a5302181 | 1634 | EXPORT_SYMBOL_GPL(snd_soc_dapm_sync); |
2b97eabc | 1635 | |
ce6120cc | 1636 | static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm, |
215edda3 | 1637 | const struct snd_soc_dapm_route *route) |
2b97eabc RP |
1638 | { |
1639 | struct snd_soc_dapm_path *path; | |
1640 | struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w; | |
97c866de | 1641 | struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL; |
ead9b919 | 1642 | const char *sink; |
215edda3 | 1643 | const char *control = route->control; |
ead9b919 JN |
1644 | const char *source; |
1645 | char prefixed_sink[80]; | |
1646 | char prefixed_source[80]; | |
2b97eabc RP |
1647 | int ret = 0; |
1648 | ||
88e8b9a8 | 1649 | if (dapm->codec && dapm->codec->name_prefix) { |
ead9b919 JN |
1650 | snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s", |
1651 | dapm->codec->name_prefix, route->sink); | |
1652 | sink = prefixed_sink; | |
1653 | snprintf(prefixed_source, sizeof(prefixed_source), "%s %s", | |
1654 | dapm->codec->name_prefix, route->source); | |
1655 | source = prefixed_source; | |
1656 | } else { | |
1657 | sink = route->sink; | |
1658 | source = route->source; | |
1659 | } | |
1660 | ||
97c866de JN |
1661 | /* |
1662 | * find src and dest widgets over all widgets but favor a widget from | |
1663 | * current DAPM context | |
1664 | */ | |
1665 | list_for_each_entry(w, &dapm->card->widgets, list) { | |
2b97eabc | 1666 | if (!wsink && !(strcmp(w->name, sink))) { |
97c866de JN |
1667 | wtsink = w; |
1668 | if (w->dapm == dapm) | |
1669 | wsink = w; | |
2b97eabc RP |
1670 | continue; |
1671 | } | |
1672 | if (!wsource && !(strcmp(w->name, source))) { | |
97c866de JN |
1673 | wtsource = w; |
1674 | if (w->dapm == dapm) | |
1675 | wsource = w; | |
2b97eabc RP |
1676 | } |
1677 | } | |
97c866de JN |
1678 | /* use widget from another DAPM context if not found from this */ |
1679 | if (!wsink) | |
1680 | wsink = wtsink; | |
1681 | if (!wsource) | |
1682 | wsource = wtsource; | |
2b97eabc RP |
1683 | |
1684 | if (wsource == NULL || wsink == NULL) | |
1685 | return -ENODEV; | |
1686 | ||
1687 | path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL); | |
1688 | if (!path) | |
1689 | return -ENOMEM; | |
1690 | ||
1691 | path->source = wsource; | |
1692 | path->sink = wsink; | |
215edda3 | 1693 | path->connected = route->connected; |
2b97eabc RP |
1694 | INIT_LIST_HEAD(&path->list); |
1695 | INIT_LIST_HEAD(&path->list_source); | |
1696 | INIT_LIST_HEAD(&path->list_sink); | |
1697 | ||
1698 | /* check for external widgets */ | |
1699 | if (wsink->id == snd_soc_dapm_input) { | |
1700 | if (wsource->id == snd_soc_dapm_micbias || | |
1701 | wsource->id == snd_soc_dapm_mic || | |
087d53ab RC |
1702 | wsource->id == snd_soc_dapm_line || |
1703 | wsource->id == snd_soc_dapm_output) | |
2b97eabc RP |
1704 | wsink->ext = 1; |
1705 | } | |
1706 | if (wsource->id == snd_soc_dapm_output) { | |
1707 | if (wsink->id == snd_soc_dapm_spk || | |
1708 | wsink->id == snd_soc_dapm_hp || | |
1e39221e SF |
1709 | wsink->id == snd_soc_dapm_line || |
1710 | wsink->id == snd_soc_dapm_input) | |
2b97eabc RP |
1711 | wsource->ext = 1; |
1712 | } | |
1713 | ||
1714 | /* connect static paths */ | |
1715 | if (control == NULL) { | |
8ddab3f5 | 1716 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
1717 | list_add(&path->list_sink, &wsink->sources); |
1718 | list_add(&path->list_source, &wsource->sinks); | |
1719 | path->connect = 1; | |
1720 | return 0; | |
1721 | } | |
1722 | ||
1723 | /* connect dynamic paths */ | |
dc2bea61 | 1724 | switch (wsink->id) { |
2b97eabc RP |
1725 | case snd_soc_dapm_adc: |
1726 | case snd_soc_dapm_dac: | |
1727 | case snd_soc_dapm_pga: | |
d88429a6 | 1728 | case snd_soc_dapm_out_drv: |
2b97eabc RP |
1729 | case snd_soc_dapm_input: |
1730 | case snd_soc_dapm_output: | |
1731 | case snd_soc_dapm_micbias: | |
1732 | case snd_soc_dapm_vmid: | |
1733 | case snd_soc_dapm_pre: | |
1734 | case snd_soc_dapm_post: | |
246d0a17 | 1735 | case snd_soc_dapm_supply: |
010ff262 MB |
1736 | case snd_soc_dapm_aif_in: |
1737 | case snd_soc_dapm_aif_out: | |
8ddab3f5 | 1738 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
1739 | list_add(&path->list_sink, &wsink->sources); |
1740 | list_add(&path->list_source, &wsource->sinks); | |
1741 | path->connect = 1; | |
1742 | return 0; | |
1743 | case snd_soc_dapm_mux: | |
24ff33ac | 1744 | case snd_soc_dapm_virt_mux: |
74155556 | 1745 | case snd_soc_dapm_value_mux: |
ce6120cc | 1746 | ret = dapm_connect_mux(dapm, wsource, wsink, path, control, |
82cfecdc | 1747 | &wsink->kcontrol_news[0]); |
2b97eabc RP |
1748 | if (ret != 0) |
1749 | goto err; | |
1750 | break; | |
1751 | case snd_soc_dapm_switch: | |
1752 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1753 | case snd_soc_dapm_mixer_named_ctl: |
ce6120cc | 1754 | ret = dapm_connect_mixer(dapm, wsource, wsink, path, control); |
2b97eabc RP |
1755 | if (ret != 0) |
1756 | goto err; | |
1757 | break; | |
1758 | case snd_soc_dapm_hp: | |
1759 | case snd_soc_dapm_mic: | |
1760 | case snd_soc_dapm_line: | |
1761 | case snd_soc_dapm_spk: | |
8ddab3f5 | 1762 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
1763 | list_add(&path->list_sink, &wsink->sources); |
1764 | list_add(&path->list_source, &wsource->sinks); | |
1765 | path->connect = 0; | |
1766 | return 0; | |
1767 | } | |
1768 | return 0; | |
1769 | ||
1770 | err: | |
f7d41ae8 JN |
1771 | dev_warn(dapm->dev, "asoc: no dapm match for %s --> %s --> %s\n", |
1772 | source, control, sink); | |
2b97eabc RP |
1773 | kfree(path); |
1774 | return ret; | |
1775 | } | |
105f1c28 | 1776 | |
105f1c28 MB |
1777 | /** |
1778 | * snd_soc_dapm_add_routes - Add routes between DAPM widgets | |
ce6120cc | 1779 | * @dapm: DAPM context |
105f1c28 MB |
1780 | * @route: audio routes |
1781 | * @num: number of routes | |
1782 | * | |
1783 | * Connects 2 dapm widgets together via a named audio path. The sink is | |
1784 | * the widget receiving the audio signal, whilst the source is the sender | |
1785 | * of the audio signal. | |
1786 | * | |
1787 | * Returns 0 for success else error. On error all resources can be freed | |
1788 | * with a call to snd_soc_card_free(). | |
1789 | */ | |
ce6120cc | 1790 | int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm, |
105f1c28 MB |
1791 | const struct snd_soc_dapm_route *route, int num) |
1792 | { | |
1793 | int i, ret; | |
1794 | ||
1795 | for (i = 0; i < num; i++) { | |
ce6120cc | 1796 | ret = snd_soc_dapm_add_route(dapm, route); |
105f1c28 | 1797 | if (ret < 0) { |
f7d41ae8 JN |
1798 | dev_err(dapm->dev, "Failed to add route %s->%s\n", |
1799 | route->source, route->sink); | |
105f1c28 MB |
1800 | return ret; |
1801 | } | |
1802 | route++; | |
1803 | } | |
1804 | ||
1805 | return 0; | |
1806 | } | |
1807 | EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes); | |
1808 | ||
2b97eabc RP |
1809 | /** |
1810 | * snd_soc_dapm_new_widgets - add new dapm widgets | |
ce6120cc | 1811 | * @dapm: DAPM context |
2b97eabc RP |
1812 | * |
1813 | * Checks the codec for any new dapm widgets and creates them if found. | |
1814 | * | |
1815 | * Returns 0 for success. | |
1816 | */ | |
ce6120cc | 1817 | int snd_soc_dapm_new_widgets(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
1818 | { |
1819 | struct snd_soc_dapm_widget *w; | |
b66a70d5 | 1820 | unsigned int val; |
2b97eabc | 1821 | |
97c866de | 1822 | list_for_each_entry(w, &dapm->card->widgets, list) |
2b97eabc RP |
1823 | { |
1824 | if (w->new) | |
1825 | continue; | |
1826 | ||
fad59888 SW |
1827 | if (w->num_kcontrols) { |
1828 | w->kcontrols = kzalloc(w->num_kcontrols * | |
1829 | sizeof(struct snd_kcontrol *), | |
1830 | GFP_KERNEL); | |
1831 | if (!w->kcontrols) | |
1832 | return -ENOMEM; | |
1833 | } | |
1834 | ||
2b97eabc RP |
1835 | switch(w->id) { |
1836 | case snd_soc_dapm_switch: | |
1837 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1838 | case snd_soc_dapm_mixer_named_ctl: |
b75576d7 | 1839 | w->power_check = dapm_generic_check_power; |
4b80b8c2 | 1840 | dapm_new_mixer(w); |
2b97eabc RP |
1841 | break; |
1842 | case snd_soc_dapm_mux: | |
24ff33ac | 1843 | case snd_soc_dapm_virt_mux: |
2e72f8e3 | 1844 | case snd_soc_dapm_value_mux: |
b75576d7 | 1845 | w->power_check = dapm_generic_check_power; |
4b80b8c2 | 1846 | dapm_new_mux(w); |
2b97eabc RP |
1847 | break; |
1848 | case snd_soc_dapm_adc: | |
010ff262 | 1849 | case snd_soc_dapm_aif_out: |
b75576d7 MB |
1850 | w->power_check = dapm_adc_check_power; |
1851 | break; | |
2b97eabc | 1852 | case snd_soc_dapm_dac: |
010ff262 | 1853 | case snd_soc_dapm_aif_in: |
b75576d7 MB |
1854 | w->power_check = dapm_dac_check_power; |
1855 | break; | |
2b97eabc | 1856 | case snd_soc_dapm_pga: |
d88429a6 | 1857 | case snd_soc_dapm_out_drv: |
b75576d7 | 1858 | w->power_check = dapm_generic_check_power; |
4b80b8c2 | 1859 | dapm_new_pga(w); |
2b97eabc RP |
1860 | break; |
1861 | case snd_soc_dapm_input: | |
1862 | case snd_soc_dapm_output: | |
1863 | case snd_soc_dapm_micbias: | |
1864 | case snd_soc_dapm_spk: | |
1865 | case snd_soc_dapm_hp: | |
1866 | case snd_soc_dapm_mic: | |
1867 | case snd_soc_dapm_line: | |
b75576d7 MB |
1868 | w->power_check = dapm_generic_check_power; |
1869 | break; | |
246d0a17 MB |
1870 | case snd_soc_dapm_supply: |
1871 | w->power_check = dapm_supply_check_power; | |
2b97eabc RP |
1872 | case snd_soc_dapm_vmid: |
1873 | case snd_soc_dapm_pre: | |
1874 | case snd_soc_dapm_post: | |
1875 | break; | |
1876 | } | |
b66a70d5 MB |
1877 | |
1878 | /* Read the initial power state from the device */ | |
1879 | if (w->reg >= 0) { | |
1880 | val = snd_soc_read(w->codec, w->reg); | |
1881 | val &= 1 << w->shift; | |
1882 | if (w->invert) | |
1883 | val = !val; | |
1884 | ||
1885 | if (val) | |
1886 | w->power = 1; | |
1887 | } | |
1888 | ||
2b97eabc | 1889 | w->new = 1; |
d5d1e0be LPC |
1890 | |
1891 | dapm_debugfs_add_widget(w); | |
2b97eabc RP |
1892 | } |
1893 | ||
ce6120cc | 1894 | dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc RP |
1895 | return 0; |
1896 | } | |
1897 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets); | |
1898 | ||
1899 | /** | |
1900 | * snd_soc_dapm_get_volsw - dapm mixer get callback | |
1901 | * @kcontrol: mixer control | |
ac11a2b3 | 1902 | * @ucontrol: control element information |
2b97eabc RP |
1903 | * |
1904 | * Callback to get the value of a dapm mixer control. | |
1905 | * | |
1906 | * Returns 0 for success. | |
1907 | */ | |
1908 | int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol, | |
1909 | struct snd_ctl_elem_value *ucontrol) | |
1910 | { | |
fafd2176 SW |
1911 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
1912 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
4eaa9819 JS |
1913 | struct soc_mixer_control *mc = |
1914 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
1915 | unsigned int reg = mc->reg; |
1916 | unsigned int shift = mc->shift; | |
1917 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1918 | int max = mc->max; |
815ecf8d JS |
1919 | unsigned int invert = mc->invert; |
1920 | unsigned int mask = (1 << fls(max)) - 1; | |
2b97eabc | 1921 | |
2b97eabc RP |
1922 | ucontrol->value.integer.value[0] = |
1923 | (snd_soc_read(widget->codec, reg) >> shift) & mask; | |
1924 | if (shift != rshift) | |
1925 | ucontrol->value.integer.value[1] = | |
1926 | (snd_soc_read(widget->codec, reg) >> rshift) & mask; | |
1927 | if (invert) { | |
1928 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1929 | max - ucontrol->value.integer.value[0]; |
2b97eabc RP |
1930 | if (shift != rshift) |
1931 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 1932 | max - ucontrol->value.integer.value[1]; |
2b97eabc RP |
1933 | } |
1934 | ||
1935 | return 0; | |
1936 | } | |
1937 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw); | |
1938 | ||
1939 | /** | |
1940 | * snd_soc_dapm_put_volsw - dapm mixer set callback | |
1941 | * @kcontrol: mixer control | |
ac11a2b3 | 1942 | * @ucontrol: control element information |
2b97eabc RP |
1943 | * |
1944 | * Callback to set the value of a dapm mixer control. | |
1945 | * | |
1946 | * Returns 0 for success. | |
1947 | */ | |
1948 | int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, | |
1949 | struct snd_ctl_elem_value *ucontrol) | |
1950 | { | |
fafd2176 SW |
1951 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
1952 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
1953 | struct snd_soc_codec *codec = widget->codec; | |
4eaa9819 JS |
1954 | struct soc_mixer_control *mc = |
1955 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
1956 | unsigned int reg = mc->reg; |
1957 | unsigned int shift = mc->shift; | |
4eaa9819 | 1958 | int max = mc->max; |
815ecf8d JS |
1959 | unsigned int mask = (1 << fls(max)) - 1; |
1960 | unsigned int invert = mc->invert; | |
e9cf7049 | 1961 | unsigned int val; |
97404f2e MB |
1962 | int connect, change; |
1963 | struct snd_soc_dapm_update update; | |
fafd2176 | 1964 | int wi; |
2b97eabc RP |
1965 | |
1966 | val = (ucontrol->value.integer.value[0] & mask); | |
1967 | ||
1968 | if (invert) | |
a7a4ac86 | 1969 | val = max - val; |
e9cf7049 | 1970 | mask = mask << shift; |
2b97eabc | 1971 | val = val << shift; |
2b97eabc | 1972 | |
fafd2176 SW |
1973 | if (val) |
1974 | /* new connection */ | |
1975 | connect = invert ? 0 : 1; | |
1976 | else | |
1977 | /* old connection must be powered down */ | |
1978 | connect = invert ? 1 : 0; | |
1979 | ||
1980 | mutex_lock(&codec->mutex); | |
2b97eabc | 1981 | |
e9cf7049 | 1982 | change = snd_soc_test_bits(widget->codec, reg, mask, val); |
97404f2e | 1983 | if (change) { |
fafd2176 SW |
1984 | for (wi = 0; wi < wlist->num_widgets; wi++) { |
1985 | widget = wlist->widgets[wi]; | |
283375ce | 1986 | |
fafd2176 | 1987 | widget->value = val; |
97404f2e | 1988 | |
fafd2176 SW |
1989 | update.kcontrol = kcontrol; |
1990 | update.widget = widget; | |
1991 | update.reg = reg; | |
1992 | update.mask = mask; | |
1993 | update.val = val; | |
1994 | widget->dapm->update = &update; | |
97404f2e | 1995 | |
fafd2176 SW |
1996 | dapm_mixer_update_power(widget, kcontrol, connect); |
1997 | ||
1998 | widget->dapm->update = NULL; | |
1999 | } | |
283375ce MB |
2000 | } |
2001 | ||
fafd2176 | 2002 | mutex_unlock(&codec->mutex); |
97404f2e | 2003 | return 0; |
2b97eabc RP |
2004 | } |
2005 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw); | |
2006 | ||
2007 | /** | |
2008 | * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback | |
2009 | * @kcontrol: mixer control | |
ac11a2b3 | 2010 | * @ucontrol: control element information |
2b97eabc RP |
2011 | * |
2012 | * Callback to get the value of a dapm enumerated double mixer control. | |
2013 | * | |
2014 | * Returns 0 for success. | |
2015 | */ | |
2016 | int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol, | |
2017 | struct snd_ctl_elem_value *ucontrol) | |
2018 | { | |
fafd2176 SW |
2019 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2020 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2b97eabc | 2021 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f | 2022 | unsigned int val, bitmask; |
2b97eabc | 2023 | |
f8ba0b7b | 2024 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
2025 | ; |
2026 | val = snd_soc_read(widget->codec, e->reg); | |
2027 | ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1); | |
2028 | if (e->shift_l != e->shift_r) | |
2029 | ucontrol->value.enumerated.item[1] = | |
2030 | (val >> e->shift_r) & (bitmask - 1); | |
2031 | ||
2032 | return 0; | |
2033 | } | |
2034 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double); | |
2035 | ||
2036 | /** | |
2037 | * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback | |
2038 | * @kcontrol: mixer control | |
ac11a2b3 | 2039 | * @ucontrol: control element information |
2b97eabc RP |
2040 | * |
2041 | * Callback to set the value of a dapm enumerated double mixer control. | |
2042 | * | |
2043 | * Returns 0 for success. | |
2044 | */ | |
2045 | int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, | |
2046 | struct snd_ctl_elem_value *ucontrol) | |
2047 | { | |
fafd2176 SW |
2048 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2049 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2050 | struct snd_soc_codec *codec = widget->codec; | |
2b97eabc | 2051 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
3a65577d | 2052 | unsigned int val, mux, change; |
46f5822f | 2053 | unsigned int mask, bitmask; |
97404f2e | 2054 | struct snd_soc_dapm_update update; |
fafd2176 | 2055 | int wi; |
2b97eabc | 2056 | |
f8ba0b7b | 2057 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc | 2058 | ; |
f8ba0b7b | 2059 | if (ucontrol->value.enumerated.item[0] > e->max - 1) |
2b97eabc RP |
2060 | return -EINVAL; |
2061 | mux = ucontrol->value.enumerated.item[0]; | |
2062 | val = mux << e->shift_l; | |
2063 | mask = (bitmask - 1) << e->shift_l; | |
2064 | if (e->shift_l != e->shift_r) { | |
f8ba0b7b | 2065 | if (ucontrol->value.enumerated.item[1] > e->max - 1) |
2b97eabc RP |
2066 | return -EINVAL; |
2067 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
2068 | mask |= (bitmask - 1) << e->shift_r; | |
2069 | } | |
2070 | ||
fafd2176 SW |
2071 | mutex_lock(&codec->mutex); |
2072 | ||
3a65577d | 2073 | change = snd_soc_test_bits(widget->codec, e->reg, mask, val); |
fafd2176 SW |
2074 | if (change) { |
2075 | for (wi = 0; wi < wlist->num_widgets; wi++) { | |
2076 | widget = wlist->widgets[wi]; | |
2077 | ||
2078 | widget->value = val; | |
1642e3d4 | 2079 | |
fafd2176 SW |
2080 | update.kcontrol = kcontrol; |
2081 | update.widget = widget; | |
2082 | update.reg = e->reg; | |
2083 | update.mask = mask; | |
2084 | update.val = val; | |
2085 | widget->dapm->update = &update; | |
1642e3d4 | 2086 | |
fafd2176 | 2087 | dapm_mux_update_power(widget, kcontrol, change, mux, e); |
1642e3d4 | 2088 | |
fafd2176 SW |
2089 | widget->dapm->update = NULL; |
2090 | } | |
2091 | } | |
2b97eabc | 2092 | |
fafd2176 | 2093 | mutex_unlock(&codec->mutex); |
97404f2e | 2094 | return change; |
2b97eabc RP |
2095 | } |
2096 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double); | |
2097 | ||
d2b247a8 MB |
2098 | /** |
2099 | * snd_soc_dapm_get_enum_virt - Get virtual DAPM mux | |
2100 | * @kcontrol: mixer control | |
2101 | * @ucontrol: control element information | |
2102 | * | |
2103 | * Returns 0 for success. | |
2104 | */ | |
2105 | int snd_soc_dapm_get_enum_virt(struct snd_kcontrol *kcontrol, | |
2106 | struct snd_ctl_elem_value *ucontrol) | |
2107 | { | |
fafd2176 SW |
2108 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2109 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
d2b247a8 MB |
2110 | |
2111 | ucontrol->value.enumerated.item[0] = widget->value; | |
2112 | ||
2113 | return 0; | |
2114 | } | |
2115 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_virt); | |
2116 | ||
2117 | /** | |
2118 | * snd_soc_dapm_put_enum_virt - Set virtual DAPM mux | |
2119 | * @kcontrol: mixer control | |
2120 | * @ucontrol: control element information | |
2121 | * | |
2122 | * Returns 0 for success. | |
2123 | */ | |
2124 | int snd_soc_dapm_put_enum_virt(struct snd_kcontrol *kcontrol, | |
2125 | struct snd_ctl_elem_value *ucontrol) | |
2126 | { | |
fafd2176 SW |
2127 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2128 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2129 | struct snd_soc_codec *codec = widget->codec; | |
d2b247a8 MB |
2130 | struct soc_enum *e = |
2131 | (struct soc_enum *)kcontrol->private_value; | |
2132 | int change; | |
2133 | int ret = 0; | |
fafd2176 | 2134 | int wi; |
d2b247a8 MB |
2135 | |
2136 | if (ucontrol->value.enumerated.item[0] >= e->max) | |
2137 | return -EINVAL; | |
2138 | ||
fafd2176 | 2139 | mutex_lock(&codec->mutex); |
d2b247a8 MB |
2140 | |
2141 | change = widget->value != ucontrol->value.enumerated.item[0]; | |
fafd2176 SW |
2142 | if (change) { |
2143 | for (wi = 0; wi < wlist->num_widgets; wi++) { | |
2144 | widget = wlist->widgets[wi]; | |
2145 | ||
2146 | widget->value = ucontrol->value.enumerated.item[0]; | |
2147 | ||
2148 | dapm_mux_update_power(widget, kcontrol, change, | |
2149 | widget->value, e); | |
2150 | } | |
2151 | } | |
d2b247a8 | 2152 | |
fafd2176 | 2153 | mutex_unlock(&codec->mutex); |
d2b247a8 MB |
2154 | return ret; |
2155 | } | |
2156 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt); | |
2157 | ||
2e72f8e3 PU |
2158 | /** |
2159 | * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get | |
2160 | * callback | |
2161 | * @kcontrol: mixer control | |
2162 | * @ucontrol: control element information | |
2163 | * | |
2164 | * Callback to get the value of a dapm semi enumerated double mixer control. | |
2165 | * | |
2166 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
2167 | * used for handling bitfield coded enumeration for example. | |
2168 | * | |
2169 | * Returns 0 for success. | |
2170 | */ | |
2171 | int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol *kcontrol, | |
2172 | struct snd_ctl_elem_value *ucontrol) | |
2173 | { | |
fafd2176 SW |
2174 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2175 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
74155556 | 2176 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f | 2177 | unsigned int reg_val, val, mux; |
2e72f8e3 PU |
2178 | |
2179 | reg_val = snd_soc_read(widget->codec, e->reg); | |
2180 | val = (reg_val >> e->shift_l) & e->mask; | |
2181 | for (mux = 0; mux < e->max; mux++) { | |
2182 | if (val == e->values[mux]) | |
2183 | break; | |
2184 | } | |
2185 | ucontrol->value.enumerated.item[0] = mux; | |
2186 | if (e->shift_l != e->shift_r) { | |
2187 | val = (reg_val >> e->shift_r) & e->mask; | |
2188 | for (mux = 0; mux < e->max; mux++) { | |
2189 | if (val == e->values[mux]) | |
2190 | break; | |
2191 | } | |
2192 | ucontrol->value.enumerated.item[1] = mux; | |
2193 | } | |
2194 | ||
2195 | return 0; | |
2196 | } | |
2197 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double); | |
2198 | ||
2199 | /** | |
2200 | * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set | |
2201 | * callback | |
2202 | * @kcontrol: mixer control | |
2203 | * @ucontrol: control element information | |
2204 | * | |
2205 | * Callback to set the value of a dapm semi enumerated double mixer control. | |
2206 | * | |
2207 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
2208 | * used for handling bitfield coded enumeration for example. | |
2209 | * | |
2210 | * Returns 0 for success. | |
2211 | */ | |
2212 | int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol, | |
2213 | struct snd_ctl_elem_value *ucontrol) | |
2214 | { | |
fafd2176 SW |
2215 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2216 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2217 | struct snd_soc_codec *codec = widget->codec; | |
74155556 | 2218 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
3a65577d | 2219 | unsigned int val, mux, change; |
46f5822f | 2220 | unsigned int mask; |
97404f2e | 2221 | struct snd_soc_dapm_update update; |
fafd2176 | 2222 | int wi; |
2e72f8e3 PU |
2223 | |
2224 | if (ucontrol->value.enumerated.item[0] > e->max - 1) | |
2225 | return -EINVAL; | |
2226 | mux = ucontrol->value.enumerated.item[0]; | |
2227 | val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l; | |
2228 | mask = e->mask << e->shift_l; | |
2229 | if (e->shift_l != e->shift_r) { | |
2230 | if (ucontrol->value.enumerated.item[1] > e->max - 1) | |
2231 | return -EINVAL; | |
2232 | val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r; | |
2233 | mask |= e->mask << e->shift_r; | |
2234 | } | |
2235 | ||
fafd2176 SW |
2236 | mutex_lock(&codec->mutex); |
2237 | ||
3a65577d | 2238 | change = snd_soc_test_bits(widget->codec, e->reg, mask, val); |
fafd2176 SW |
2239 | if (change) { |
2240 | for (wi = 0; wi < wlist->num_widgets; wi++) { | |
2241 | widget = wlist->widgets[wi]; | |
1642e3d4 | 2242 | |
fafd2176 | 2243 | widget->value = val; |
1642e3d4 | 2244 | |
fafd2176 SW |
2245 | update.kcontrol = kcontrol; |
2246 | update.widget = widget; | |
2247 | update.reg = e->reg; | |
2248 | update.mask = mask; | |
2249 | update.val = val; | |
2250 | widget->dapm->update = &update; | |
1642e3d4 | 2251 | |
fafd2176 SW |
2252 | dapm_mux_update_power(widget, kcontrol, change, mux, e); |
2253 | ||
2254 | widget->dapm->update = NULL; | |
2255 | } | |
2256 | } | |
2e72f8e3 | 2257 | |
fafd2176 | 2258 | mutex_unlock(&codec->mutex); |
97404f2e | 2259 | return change; |
2e72f8e3 PU |
2260 | } |
2261 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double); | |
2262 | ||
8b37dbd2 MB |
2263 | /** |
2264 | * snd_soc_dapm_info_pin_switch - Info for a pin switch | |
2265 | * | |
2266 | * @kcontrol: mixer control | |
2267 | * @uinfo: control element information | |
2268 | * | |
2269 | * Callback to provide information about a pin switch control. | |
2270 | */ | |
2271 | int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol, | |
2272 | struct snd_ctl_elem_info *uinfo) | |
2273 | { | |
2274 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
2275 | uinfo->count = 1; | |
2276 | uinfo->value.integer.min = 0; | |
2277 | uinfo->value.integer.max = 1; | |
2278 | ||
2279 | return 0; | |
2280 | } | |
2281 | EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch); | |
2282 | ||
2283 | /** | |
2284 | * snd_soc_dapm_get_pin_switch - Get information for a pin switch | |
2285 | * | |
2286 | * @kcontrol: mixer control | |
2287 | * @ucontrol: Value | |
2288 | */ | |
2289 | int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol, | |
2290 | struct snd_ctl_elem_value *ucontrol) | |
2291 | { | |
2292 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
2293 | const char *pin = (const char *)kcontrol->private_value; | |
2294 | ||
2295 | mutex_lock(&codec->mutex); | |
2296 | ||
2297 | ucontrol->value.integer.value[0] = | |
ce6120cc | 2298 | snd_soc_dapm_get_pin_status(&codec->dapm, pin); |
8b37dbd2 MB |
2299 | |
2300 | mutex_unlock(&codec->mutex); | |
2301 | ||
2302 | return 0; | |
2303 | } | |
2304 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch); | |
2305 | ||
2306 | /** | |
2307 | * snd_soc_dapm_put_pin_switch - Set information for a pin switch | |
2308 | * | |
2309 | * @kcontrol: mixer control | |
2310 | * @ucontrol: Value | |
2311 | */ | |
2312 | int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol, | |
2313 | struct snd_ctl_elem_value *ucontrol) | |
2314 | { | |
2315 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
2316 | const char *pin = (const char *)kcontrol->private_value; | |
2317 | ||
2318 | mutex_lock(&codec->mutex); | |
2319 | ||
2320 | if (ucontrol->value.integer.value[0]) | |
ce6120cc | 2321 | snd_soc_dapm_enable_pin(&codec->dapm, pin); |
8b37dbd2 | 2322 | else |
ce6120cc | 2323 | snd_soc_dapm_disable_pin(&codec->dapm, pin); |
8b37dbd2 | 2324 | |
ce6120cc | 2325 | snd_soc_dapm_sync(&codec->dapm); |
8b37dbd2 MB |
2326 | |
2327 | mutex_unlock(&codec->mutex); | |
2328 | ||
2329 | return 0; | |
2330 | } | |
2331 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch); | |
2332 | ||
2b97eabc RP |
2333 | /** |
2334 | * snd_soc_dapm_new_control - create new dapm control | |
ce6120cc | 2335 | * @dapm: DAPM context |
2b97eabc RP |
2336 | * @widget: widget template |
2337 | * | |
2338 | * Creates a new dapm control based upon the template. | |
2339 | * | |
2340 | * Returns 0 for success else error. | |
2341 | */ | |
ce6120cc | 2342 | int snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
2343 | const struct snd_soc_dapm_widget *widget) |
2344 | { | |
2345 | struct snd_soc_dapm_widget *w; | |
ead9b919 | 2346 | size_t name_len; |
2b97eabc RP |
2347 | |
2348 | if ((w = dapm_cnew_widget(widget)) == NULL) | |
2349 | return -ENOMEM; | |
2350 | ||
ead9b919 | 2351 | name_len = strlen(widget->name) + 1; |
88e8b9a8 | 2352 | if (dapm->codec && dapm->codec->name_prefix) |
ead9b919 JN |
2353 | name_len += 1 + strlen(dapm->codec->name_prefix); |
2354 | w->name = kmalloc(name_len, GFP_KERNEL); | |
2355 | if (w->name == NULL) { | |
2356 | kfree(w); | |
2357 | return -ENOMEM; | |
2358 | } | |
88e8b9a8 | 2359 | if (dapm->codec && dapm->codec->name_prefix) |
ead9b919 JN |
2360 | snprintf(w->name, name_len, "%s %s", |
2361 | dapm->codec->name_prefix, widget->name); | |
2362 | else | |
2363 | snprintf(w->name, name_len, "%s", widget->name); | |
2364 | ||
97c866de | 2365 | dapm->n_widgets++; |
ce6120cc LG |
2366 | w->dapm = dapm; |
2367 | w->codec = dapm->codec; | |
2b97eabc RP |
2368 | INIT_LIST_HEAD(&w->sources); |
2369 | INIT_LIST_HEAD(&w->sinks); | |
2370 | INIT_LIST_HEAD(&w->list); | |
97c866de | 2371 | list_add(&w->list, &dapm->card->widgets); |
2b97eabc RP |
2372 | |
2373 | /* machine layer set ups unconnected pins and insertions */ | |
2374 | w->connected = 1; | |
2375 | return 0; | |
2376 | } | |
2377 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control); | |
2378 | ||
4ba1327a MB |
2379 | /** |
2380 | * snd_soc_dapm_new_controls - create new dapm controls | |
ce6120cc | 2381 | * @dapm: DAPM context |
4ba1327a MB |
2382 | * @widget: widget array |
2383 | * @num: number of widgets | |
2384 | * | |
2385 | * Creates new DAPM controls based upon the templates. | |
2386 | * | |
2387 | * Returns 0 for success else error. | |
2388 | */ | |
ce6120cc | 2389 | int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm, |
4ba1327a MB |
2390 | const struct snd_soc_dapm_widget *widget, |
2391 | int num) | |
2392 | { | |
2393 | int i, ret; | |
2394 | ||
2395 | for (i = 0; i < num; i++) { | |
ce6120cc | 2396 | ret = snd_soc_dapm_new_control(dapm, widget); |
b8b33cb5 | 2397 | if (ret < 0) { |
f7d41ae8 JN |
2398 | dev_err(dapm->dev, |
2399 | "ASoC: Failed to create DAPM control %s: %d\n", | |
2400 | widget->name, ret); | |
4ba1327a | 2401 | return ret; |
b8b33cb5 | 2402 | } |
4ba1327a MB |
2403 | widget++; |
2404 | } | |
2405 | return 0; | |
2406 | } | |
2407 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls); | |
2408 | ||
ce6120cc | 2409 | static void soc_dapm_stream_event(struct snd_soc_dapm_context *dapm, |
f0fba2ad | 2410 | const char *stream, int event) |
2b97eabc RP |
2411 | { |
2412 | struct snd_soc_dapm_widget *w; | |
2413 | ||
97c866de | 2414 | list_for_each_entry(w, &dapm->card->widgets, list) |
2b97eabc | 2415 | { |
97c866de | 2416 | if (!w->sname || w->dapm != dapm) |
2b97eabc | 2417 | continue; |
f7d41ae8 JN |
2418 | dev_dbg(w->dapm->dev, "widget %s\n %s stream %s event %d\n", |
2419 | w->name, w->sname, stream, event); | |
2b97eabc RP |
2420 | if (strstr(w->sname, stream)) { |
2421 | switch(event) { | |
2422 | case SND_SOC_DAPM_STREAM_START: | |
2423 | w->active = 1; | |
2424 | break; | |
2425 | case SND_SOC_DAPM_STREAM_STOP: | |
2426 | w->active = 0; | |
2427 | break; | |
2428 | case SND_SOC_DAPM_STREAM_SUSPEND: | |
2b97eabc | 2429 | case SND_SOC_DAPM_STREAM_RESUME: |
2b97eabc | 2430 | case SND_SOC_DAPM_STREAM_PAUSE_PUSH: |
2b97eabc RP |
2431 | case SND_SOC_DAPM_STREAM_PAUSE_RELEASE: |
2432 | break; | |
2433 | } | |
2434 | } | |
2435 | } | |
2b97eabc | 2436 | |
ce6120cc LG |
2437 | dapm_power_widgets(dapm, event); |
2438 | } | |
2439 | ||
2440 | /** | |
2441 | * snd_soc_dapm_stream_event - send a stream event to the dapm core | |
2442 | * @rtd: PCM runtime data | |
2443 | * @stream: stream name | |
2444 | * @event: stream event | |
2445 | * | |
2446 | * Sends a stream event to the dapm core. The core then makes any | |
2447 | * necessary widget power changes. | |
2448 | * | |
2449 | * Returns 0 for success else error. | |
2450 | */ | |
2451 | int snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, | |
2452 | const char *stream, int event) | |
2453 | { | |
2454 | struct snd_soc_codec *codec = rtd->codec; | |
2455 | ||
2456 | if (stream == NULL) | |
2457 | return 0; | |
2458 | ||
2459 | mutex_lock(&codec->mutex); | |
2460 | soc_dapm_stream_event(&codec->dapm, stream, event); | |
8e8b2d67 | 2461 | mutex_unlock(&codec->mutex); |
2b97eabc RP |
2462 | return 0; |
2463 | } | |
2b97eabc RP |
2464 | |
2465 | /** | |
a5302181 | 2466 | * snd_soc_dapm_enable_pin - enable pin. |
ce6120cc | 2467 | * @dapm: DAPM context |
a5302181 | 2468 | * @pin: pin name |
2b97eabc | 2469 | * |
74b8f955 | 2470 | * Enables input/output pin and its parents or children widgets iff there is |
a5302181 LG |
2471 | * a valid audio route and active audio stream. |
2472 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2473 | * do any widget power switching. | |
2b97eabc | 2474 | */ |
ce6120cc | 2475 | int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin) |
2b97eabc | 2476 | { |
ce6120cc | 2477 | return snd_soc_dapm_set_pin(dapm, pin, 1); |
a5302181 LG |
2478 | } |
2479 | EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin); | |
2b97eabc | 2480 | |
da34183e MB |
2481 | /** |
2482 | * snd_soc_dapm_force_enable_pin - force a pin to be enabled | |
ce6120cc | 2483 | * @dapm: DAPM context |
da34183e MB |
2484 | * @pin: pin name |
2485 | * | |
2486 | * Enables input/output pin regardless of any other state. This is | |
2487 | * intended for use with microphone bias supplies used in microphone | |
2488 | * jack detection. | |
2489 | * | |
2490 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2491 | * do any widget power switching. | |
2492 | */ | |
ce6120cc LG |
2493 | int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm, |
2494 | const char *pin) | |
da34183e | 2495 | { |
91a5fca4 | 2496 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); |
da34183e | 2497 | |
91a5fca4 LPC |
2498 | if (!w) { |
2499 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); | |
2500 | return -EINVAL; | |
0d86733c MB |
2501 | } |
2502 | ||
91a5fca4 LPC |
2503 | dev_dbg(w->dapm->dev, "dapm: force enable pin %s\n", pin); |
2504 | w->connected = 1; | |
2505 | w->force = 1; | |
da34183e | 2506 | |
91a5fca4 | 2507 | return 0; |
da34183e MB |
2508 | } |
2509 | EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin); | |
2510 | ||
a5302181 LG |
2511 | /** |
2512 | * snd_soc_dapm_disable_pin - disable pin. | |
ce6120cc | 2513 | * @dapm: DAPM context |
a5302181 LG |
2514 | * @pin: pin name |
2515 | * | |
74b8f955 | 2516 | * Disables input/output pin and its parents or children widgets. |
a5302181 LG |
2517 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to |
2518 | * do any widget power switching. | |
2519 | */ | |
ce6120cc LG |
2520 | int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm, |
2521 | const char *pin) | |
a5302181 | 2522 | { |
ce6120cc | 2523 | return snd_soc_dapm_set_pin(dapm, pin, 0); |
2b97eabc | 2524 | } |
a5302181 | 2525 | EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin); |
2b97eabc | 2526 | |
5817b52a MB |
2527 | /** |
2528 | * snd_soc_dapm_nc_pin - permanently disable pin. | |
ce6120cc | 2529 | * @dapm: DAPM context |
5817b52a MB |
2530 | * @pin: pin name |
2531 | * | |
2532 | * Marks the specified pin as being not connected, disabling it along | |
2533 | * any parent or child widgets. At present this is identical to | |
2534 | * snd_soc_dapm_disable_pin() but in future it will be extended to do | |
2535 | * additional things such as disabling controls which only affect | |
2536 | * paths through the pin. | |
2537 | * | |
2538 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2539 | * do any widget power switching. | |
2540 | */ | |
ce6120cc | 2541 | int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin) |
5817b52a | 2542 | { |
ce6120cc | 2543 | return snd_soc_dapm_set_pin(dapm, pin, 0); |
5817b52a MB |
2544 | } |
2545 | EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin); | |
2546 | ||
eeec12bf | 2547 | /** |
a5302181 | 2548 | * snd_soc_dapm_get_pin_status - get audio pin status |
ce6120cc | 2549 | * @dapm: DAPM context |
a5302181 | 2550 | * @pin: audio signal pin endpoint (or start point) |
eeec12bf | 2551 | * |
a5302181 | 2552 | * Get audio pin status - connected or disconnected. |
eeec12bf | 2553 | * |
a5302181 | 2554 | * Returns 1 for connected otherwise 0. |
eeec12bf | 2555 | */ |
ce6120cc LG |
2556 | int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm, |
2557 | const char *pin) | |
eeec12bf | 2558 | { |
91a5fca4 | 2559 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); |
eeec12bf | 2560 | |
91a5fca4 LPC |
2561 | if (w) |
2562 | return w->connected; | |
a68b38ad | 2563 | |
eeec12bf GG |
2564 | return 0; |
2565 | } | |
a5302181 | 2566 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status); |
eeec12bf | 2567 | |
1547aba9 MB |
2568 | /** |
2569 | * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint | |
ce6120cc | 2570 | * @dapm: DAPM context |
1547aba9 MB |
2571 | * @pin: audio signal pin endpoint (or start point) |
2572 | * | |
2573 | * Mark the given endpoint or pin as ignoring suspend. When the | |
2574 | * system is disabled a path between two endpoints flagged as ignoring | |
2575 | * suspend will not be disabled. The path must already be enabled via | |
2576 | * normal means at suspend time, it will not be turned on if it was not | |
2577 | * already enabled. | |
2578 | */ | |
ce6120cc LG |
2579 | int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm, |
2580 | const char *pin) | |
1547aba9 | 2581 | { |
91a5fca4 | 2582 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, false); |
1547aba9 | 2583 | |
91a5fca4 LPC |
2584 | if (!w) { |
2585 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); | |
2586 | return -EINVAL; | |
1547aba9 MB |
2587 | } |
2588 | ||
91a5fca4 LPC |
2589 | w->ignore_suspend = 1; |
2590 | ||
2591 | return 0; | |
1547aba9 MB |
2592 | } |
2593 | EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend); | |
2594 | ||
2b97eabc RP |
2595 | /** |
2596 | * snd_soc_dapm_free - free dapm resources | |
f0fba2ad | 2597 | * @card: SoC device |
2b97eabc RP |
2598 | * |
2599 | * Free all dapm widgets and resources. | |
2600 | */ | |
ce6120cc | 2601 | void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm) |
2b97eabc | 2602 | { |
ce6120cc | 2603 | snd_soc_dapm_sys_remove(dapm->dev); |
6c45e126 | 2604 | dapm_debugfs_cleanup(dapm); |
ce6120cc | 2605 | dapm_free_widgets(dapm); |
7be31be8 | 2606 | list_del(&dapm->list); |
2b97eabc RP |
2607 | } |
2608 | EXPORT_SYMBOL_GPL(snd_soc_dapm_free); | |
2609 | ||
ce6120cc | 2610 | static void soc_dapm_shutdown_codec(struct snd_soc_dapm_context *dapm) |
51737470 | 2611 | { |
51737470 MB |
2612 | struct snd_soc_dapm_widget *w; |
2613 | LIST_HEAD(down_list); | |
2614 | int powerdown = 0; | |
2615 | ||
97c866de JN |
2616 | list_for_each_entry(w, &dapm->card->widgets, list) { |
2617 | if (w->dapm != dapm) | |
2618 | continue; | |
51737470 | 2619 | if (w->power) { |
828a842f | 2620 | dapm_seq_insert(w, &down_list, false); |
c2caa4da | 2621 | w->power = 0; |
51737470 MB |
2622 | powerdown = 1; |
2623 | } | |
2624 | } | |
2625 | ||
2626 | /* If there were no widgets to power down we're already in | |
2627 | * standby. | |
2628 | */ | |
2629 | if (powerdown) { | |
ed5a4c47 | 2630 | snd_soc_dapm_set_bias_level(dapm, SND_SOC_BIAS_PREPARE); |
828a842f | 2631 | dapm_seq_run(dapm, &down_list, 0, false); |
ed5a4c47 | 2632 | snd_soc_dapm_set_bias_level(dapm, SND_SOC_BIAS_STANDBY); |
51737470 | 2633 | } |
f0fba2ad LG |
2634 | } |
2635 | ||
2636 | /* | |
2637 | * snd_soc_dapm_shutdown - callback for system shutdown | |
2638 | */ | |
2639 | void snd_soc_dapm_shutdown(struct snd_soc_card *card) | |
2640 | { | |
2641 | struct snd_soc_codec *codec; | |
2642 | ||
ce6120cc LG |
2643 | list_for_each_entry(codec, &card->codec_dev_list, list) { |
2644 | soc_dapm_shutdown_codec(&codec->dapm); | |
ed5a4c47 | 2645 | snd_soc_dapm_set_bias_level(&codec->dapm, SND_SOC_BIAS_OFF); |
ce6120cc | 2646 | } |
51737470 MB |
2647 | } |
2648 | ||
2b97eabc | 2649 | /* Module information */ |
d331124d | 2650 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
2b97eabc RP |
2651 | MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC"); |
2652 | MODULE_LICENSE("GPL"); |