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 | ||
de02d078 MB |
51 | #define DAPM_UPDATE_STAT(widget, val) widget->dapm->card->dapm_stats.val++; |
52 | ||
2b97eabc RP |
53 | /* dapm power sequences - make this per codec in the future */ |
54 | static int dapm_up_seq[] = { | |
38357ab2 MB |
55 | [snd_soc_dapm_pre] = 0, |
56 | [snd_soc_dapm_supply] = 1, | |
57 | [snd_soc_dapm_micbias] = 2, | |
010ff262 MB |
58 | [snd_soc_dapm_aif_in] = 3, |
59 | [snd_soc_dapm_aif_out] = 3, | |
60 | [snd_soc_dapm_mic] = 4, | |
61 | [snd_soc_dapm_mux] = 5, | |
24ff33ac | 62 | [snd_soc_dapm_virt_mux] = 5, |
010ff262 MB |
63 | [snd_soc_dapm_value_mux] = 5, |
64 | [snd_soc_dapm_dac] = 6, | |
65 | [snd_soc_dapm_mixer] = 7, | |
66 | [snd_soc_dapm_mixer_named_ctl] = 7, | |
67 | [snd_soc_dapm_pga] = 8, | |
68 | [snd_soc_dapm_adc] = 9, | |
d88429a6 | 69 | [snd_soc_dapm_out_drv] = 10, |
010ff262 MB |
70 | [snd_soc_dapm_hp] = 10, |
71 | [snd_soc_dapm_spk] = 10, | |
72 | [snd_soc_dapm_post] = 11, | |
2b97eabc | 73 | }; |
ca9c1aae | 74 | |
2b97eabc | 75 | static int dapm_down_seq[] = { |
38357ab2 MB |
76 | [snd_soc_dapm_pre] = 0, |
77 | [snd_soc_dapm_adc] = 1, | |
78 | [snd_soc_dapm_hp] = 2, | |
1ca04065 | 79 | [snd_soc_dapm_spk] = 2, |
d88429a6 | 80 | [snd_soc_dapm_out_drv] = 2, |
38357ab2 MB |
81 | [snd_soc_dapm_pga] = 4, |
82 | [snd_soc_dapm_mixer_named_ctl] = 5, | |
e3d4dabd MB |
83 | [snd_soc_dapm_mixer] = 5, |
84 | [snd_soc_dapm_dac] = 6, | |
85 | [snd_soc_dapm_mic] = 7, | |
86 | [snd_soc_dapm_micbias] = 8, | |
87 | [snd_soc_dapm_mux] = 9, | |
24ff33ac | 88 | [snd_soc_dapm_virt_mux] = 9, |
e3d4dabd | 89 | [snd_soc_dapm_value_mux] = 9, |
010ff262 MB |
90 | [snd_soc_dapm_aif_in] = 10, |
91 | [snd_soc_dapm_aif_out] = 10, | |
92 | [snd_soc_dapm_supply] = 11, | |
93 | [snd_soc_dapm_post] = 12, | |
2b97eabc RP |
94 | }; |
95 | ||
12ef193d | 96 | static void pop_wait(u32 pop_time) |
15e4c72f MB |
97 | { |
98 | if (pop_time) | |
99 | schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time)); | |
100 | } | |
101 | ||
fd8d3bc0 | 102 | static void pop_dbg(struct device *dev, u32 pop_time, const char *fmt, ...) |
15e4c72f MB |
103 | { |
104 | va_list args; | |
fd8d3bc0 | 105 | char *buf; |
15e4c72f | 106 | |
fd8d3bc0 JN |
107 | if (!pop_time) |
108 | return; | |
15e4c72f | 109 | |
fd8d3bc0 JN |
110 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); |
111 | if (buf == NULL) | |
112 | return; | |
15e4c72f | 113 | |
fd8d3bc0 JN |
114 | va_start(args, fmt); |
115 | vsnprintf(buf, PAGE_SIZE, fmt, args); | |
9d01df06 | 116 | dev_info(dev, "%s", buf); |
15e4c72f | 117 | va_end(args); |
fd8d3bc0 JN |
118 | |
119 | kfree(buf); | |
15e4c72f MB |
120 | } |
121 | ||
db432b41 MB |
122 | static bool dapm_dirty_widget(struct snd_soc_dapm_widget *w) |
123 | { | |
124 | return !list_empty(&w->dirty); | |
125 | } | |
126 | ||
75c1f891 | 127 | static void dapm_mark_dirty(struct snd_soc_dapm_widget *w, const char *reason) |
db432b41 | 128 | { |
75c1f891 MB |
129 | if (!dapm_dirty_widget(w)) { |
130 | dev_vdbg(w->dapm->dev, "Marking %s dirty due to %s\n", | |
131 | w->name, reason); | |
db432b41 | 132 | list_add_tail(&w->dirty, &w->dapm->card->dapm_dirty); |
75c1f891 | 133 | } |
db432b41 MB |
134 | } |
135 | ||
2b97eabc | 136 | /* create a new dapm widget */ |
88cb4290 | 137 | static inline struct snd_soc_dapm_widget *dapm_cnew_widget( |
2b97eabc RP |
138 | const struct snd_soc_dapm_widget *_widget) |
139 | { | |
88cb4290 | 140 | return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL); |
2b97eabc RP |
141 | } |
142 | ||
4805608a LG |
143 | /* get snd_card from DAPM context */ |
144 | static inline struct snd_card *dapm_get_snd_card( | |
145 | struct snd_soc_dapm_context *dapm) | |
146 | { | |
147 | if (dapm->codec) | |
148 | return dapm->codec->card->snd_card; | |
149 | else if (dapm->platform) | |
150 | return dapm->platform->card->snd_card; | |
151 | else | |
152 | BUG(); | |
153 | ||
154 | /* unreachable */ | |
155 | return NULL; | |
156 | } | |
157 | ||
158 | /* get soc_card from DAPM context */ | |
159 | static inline struct snd_soc_card *dapm_get_soc_card( | |
160 | struct snd_soc_dapm_context *dapm) | |
161 | { | |
162 | if (dapm->codec) | |
163 | return dapm->codec->card; | |
164 | else if (dapm->platform) | |
165 | return dapm->platform->card; | |
166 | else | |
167 | BUG(); | |
168 | ||
169 | /* unreachable */ | |
170 | return NULL; | |
171 | } | |
172 | ||
0445bdf4 LG |
173 | static int soc_widget_read(struct snd_soc_dapm_widget *w, int reg) |
174 | { | |
175 | if (w->codec) | |
176 | return snd_soc_read(w->codec, reg); | |
b7950641 LG |
177 | else if (w->platform) |
178 | return snd_soc_platform_read(w->platform, reg); | |
179 | ||
180 | dev_err(w->dapm->dev, "no valid widget read method\n"); | |
181 | return -1; | |
0445bdf4 LG |
182 | } |
183 | ||
184 | static int soc_widget_write(struct snd_soc_dapm_widget *w, int reg, int val) | |
185 | { | |
186 | if (w->codec) | |
187 | return snd_soc_write(w->codec, reg, val); | |
b7950641 LG |
188 | else if (w->platform) |
189 | return snd_soc_platform_write(w->platform, reg, val); | |
190 | ||
191 | dev_err(w->dapm->dev, "no valid widget write method\n"); | |
192 | return -1; | |
0445bdf4 LG |
193 | } |
194 | ||
195 | static int soc_widget_update_bits(struct snd_soc_dapm_widget *w, | |
196 | unsigned short reg, unsigned int mask, unsigned int value) | |
197 | { | |
198 | int change; | |
199 | unsigned int old, new; | |
200 | int ret; | |
201 | ||
202 | ret = soc_widget_read(w, reg); | |
203 | if (ret < 0) | |
204 | return ret; | |
205 | ||
206 | old = ret; | |
207 | new = (old & ~mask) | (value & mask); | |
208 | change = old != new; | |
209 | if (change) { | |
210 | ret = soc_widget_write(w, reg, new); | |
211 | if (ret < 0) | |
212 | return ret; | |
213 | } | |
214 | ||
215 | return change; | |
216 | } | |
217 | ||
452c5eaa MB |
218 | /** |
219 | * snd_soc_dapm_set_bias_level - set the bias level for the system | |
ed5a4c47 | 220 | * @dapm: DAPM context |
452c5eaa MB |
221 | * @level: level to configure |
222 | * | |
223 | * Configure the bias (power) levels for the SoC audio device. | |
224 | * | |
225 | * Returns 0 for success else error. | |
226 | */ | |
ed5a4c47 | 227 | static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm, |
ce6120cc | 228 | enum snd_soc_bias_level level) |
452c5eaa | 229 | { |
ed5a4c47 | 230 | struct snd_soc_card *card = dapm->card; |
452c5eaa MB |
231 | int ret = 0; |
232 | ||
84e90930 MB |
233 | trace_snd_soc_bias_level_start(card, level); |
234 | ||
f0fba2ad | 235 | if (card && card->set_bias_level) |
d4c6005f | 236 | ret = card->set_bias_level(card, dapm, level); |
171ec6b0 MB |
237 | if (ret != 0) |
238 | goto out; | |
239 | ||
cc4c670a MB |
240 | if (dapm->codec) { |
241 | if (dapm->codec->driver->set_bias_level) | |
242 | ret = dapm->codec->driver->set_bias_level(dapm->codec, | |
243 | level); | |
244 | else | |
245 | dapm->bias_level = level; | |
246 | } | |
171ec6b0 MB |
247 | if (ret != 0) |
248 | goto out; | |
249 | ||
250 | if (card && card->set_bias_level_post) | |
d4c6005f | 251 | ret = card->set_bias_level_post(card, dapm, level); |
171ec6b0 | 252 | out: |
84e90930 MB |
253 | trace_snd_soc_bias_level_done(card, level); |
254 | ||
452c5eaa MB |
255 | return ret; |
256 | } | |
257 | ||
2b97eabc RP |
258 | /* set up initial codec paths */ |
259 | static void dapm_set_path_status(struct snd_soc_dapm_widget *w, | |
260 | struct snd_soc_dapm_path *p, int i) | |
261 | { | |
262 | switch (w->id) { | |
263 | case snd_soc_dapm_switch: | |
ca9c1aae IM |
264 | case snd_soc_dapm_mixer: |
265 | case snd_soc_dapm_mixer_named_ctl: { | |
2b97eabc | 266 | int val; |
4eaa9819 | 267 | struct soc_mixer_control *mc = (struct soc_mixer_control *) |
82cfecdc | 268 | w->kcontrol_news[i].private_value; |
815ecf8d JS |
269 | unsigned int reg = mc->reg; |
270 | unsigned int shift = mc->shift; | |
4eaa9819 | 271 | int max = mc->max; |
815ecf8d JS |
272 | unsigned int mask = (1 << fls(max)) - 1; |
273 | unsigned int invert = mc->invert; | |
2b97eabc | 274 | |
0445bdf4 | 275 | val = soc_widget_read(w, reg); |
2b97eabc RP |
276 | val = (val >> shift) & mask; |
277 | ||
278 | if ((invert && !val) || (!invert && val)) | |
279 | p->connect = 1; | |
280 | else | |
281 | p->connect = 0; | |
282 | } | |
283 | break; | |
284 | case snd_soc_dapm_mux: { | |
82cfecdc SW |
285 | struct soc_enum *e = (struct soc_enum *) |
286 | w->kcontrol_news[i].private_value; | |
2b97eabc RP |
287 | int val, item, bitmask; |
288 | ||
f8ba0b7b | 289 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
88d96086 | 290 | ; |
0445bdf4 | 291 | val = soc_widget_read(w, e->reg); |
2b97eabc RP |
292 | item = (val >> e->shift_l) & (bitmask - 1); |
293 | ||
294 | p->connect = 0; | |
f8ba0b7b | 295 | for (i = 0; i < e->max; i++) { |
2b97eabc RP |
296 | if (!(strcmp(p->name, e->texts[i])) && item == i) |
297 | p->connect = 1; | |
298 | } | |
299 | } | |
300 | break; | |
24ff33ac | 301 | case snd_soc_dapm_virt_mux: { |
82cfecdc SW |
302 | struct soc_enum *e = (struct soc_enum *) |
303 | w->kcontrol_news[i].private_value; | |
24ff33ac DP |
304 | |
305 | p->connect = 0; | |
306 | /* since a virtual mux has no backing registers to | |
307 | * decide which path to connect, it will try to match | |
308 | * with the first enumeration. This is to ensure | |
309 | * that the default mux choice (the first) will be | |
310 | * correctly powered up during initialization. | |
311 | */ | |
312 | if (!strcmp(p->name, e->texts[0])) | |
313 | p->connect = 1; | |
314 | } | |
315 | break; | |
2e72f8e3 | 316 | case snd_soc_dapm_value_mux: { |
74155556 | 317 | struct soc_enum *e = (struct soc_enum *) |
82cfecdc | 318 | w->kcontrol_news[i].private_value; |
2e72f8e3 PU |
319 | int val, item; |
320 | ||
0445bdf4 | 321 | val = soc_widget_read(w, e->reg); |
2e72f8e3 PU |
322 | val = (val >> e->shift_l) & e->mask; |
323 | for (item = 0; item < e->max; item++) { | |
324 | if (val == e->values[item]) | |
325 | break; | |
326 | } | |
327 | ||
328 | p->connect = 0; | |
329 | for (i = 0; i < e->max; i++) { | |
330 | if (!(strcmp(p->name, e->texts[i])) && item == i) | |
331 | p->connect = 1; | |
332 | } | |
333 | } | |
334 | break; | |
56563100 | 335 | /* does not affect routing - always connected */ |
2b97eabc | 336 | case snd_soc_dapm_pga: |
d88429a6 | 337 | case snd_soc_dapm_out_drv: |
2b97eabc RP |
338 | case snd_soc_dapm_output: |
339 | case snd_soc_dapm_adc: | |
340 | case snd_soc_dapm_input: | |
341 | case snd_soc_dapm_dac: | |
342 | case snd_soc_dapm_micbias: | |
343 | case snd_soc_dapm_vmid: | |
246d0a17 | 344 | case snd_soc_dapm_supply: |
010ff262 MB |
345 | case snd_soc_dapm_aif_in: |
346 | case snd_soc_dapm_aif_out: | |
2b97eabc RP |
347 | case snd_soc_dapm_hp: |
348 | case snd_soc_dapm_mic: | |
349 | case snd_soc_dapm_spk: | |
350 | case snd_soc_dapm_line: | |
56563100 MB |
351 | p->connect = 1; |
352 | break; | |
353 | /* does affect routing - dynamically connected */ | |
2b97eabc RP |
354 | case snd_soc_dapm_pre: |
355 | case snd_soc_dapm_post: | |
356 | p->connect = 0; | |
357 | break; | |
358 | } | |
359 | } | |
360 | ||
74b8f955 | 361 | /* connect mux widget to its interconnecting audio paths */ |
ce6120cc | 362 | static int dapm_connect_mux(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
363 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, |
364 | struct snd_soc_dapm_path *path, const char *control_name, | |
365 | const struct snd_kcontrol_new *kcontrol) | |
366 | { | |
367 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
368 | int i; | |
369 | ||
f8ba0b7b | 370 | for (i = 0; i < e->max; i++) { |
2b97eabc | 371 | if (!(strcmp(control_name, e->texts[i]))) { |
8ddab3f5 | 372 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
373 | list_add(&path->list_sink, &dest->sources); |
374 | list_add(&path->list_source, &src->sinks); | |
375 | path->name = (char*)e->texts[i]; | |
376 | dapm_set_path_status(dest, path, 0); | |
377 | return 0; | |
378 | } | |
379 | } | |
380 | ||
381 | return -ENODEV; | |
382 | } | |
383 | ||
74b8f955 | 384 | /* connect mixer widget to its interconnecting audio paths */ |
ce6120cc | 385 | static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
386 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, |
387 | struct snd_soc_dapm_path *path, const char *control_name) | |
388 | { | |
389 | int i; | |
390 | ||
391 | /* search for mixer kcontrol */ | |
392 | for (i = 0; i < dest->num_kcontrols; i++) { | |
82cfecdc | 393 | if (!strcmp(control_name, dest->kcontrol_news[i].name)) { |
8ddab3f5 | 394 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
395 | list_add(&path->list_sink, &dest->sources); |
396 | list_add(&path->list_source, &src->sinks); | |
82cfecdc | 397 | path->name = dest->kcontrol_news[i].name; |
2b97eabc RP |
398 | dapm_set_path_status(dest, path, i); |
399 | return 0; | |
400 | } | |
401 | } | |
402 | return -ENODEV; | |
403 | } | |
404 | ||
af46800b | 405 | static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context *dapm, |
1007da06 | 406 | struct snd_soc_dapm_widget *kcontrolw, |
af46800b SW |
407 | const struct snd_kcontrol_new *kcontrol_new, |
408 | struct snd_kcontrol **kcontrol) | |
409 | { | |
410 | struct snd_soc_dapm_widget *w; | |
411 | int i; | |
412 | ||
413 | *kcontrol = NULL; | |
414 | ||
415 | list_for_each_entry(w, &dapm->card->widgets, list) { | |
1007da06 SW |
416 | if (w == kcontrolw || w->dapm != kcontrolw->dapm) |
417 | continue; | |
af46800b SW |
418 | for (i = 0; i < w->num_kcontrols; i++) { |
419 | if (&w->kcontrol_news[i] == kcontrol_new) { | |
420 | if (w->kcontrols) | |
421 | *kcontrol = w->kcontrols[i]; | |
422 | return 1; | |
423 | } | |
424 | } | |
425 | } | |
426 | ||
427 | return 0; | |
428 | } | |
429 | ||
2b97eabc | 430 | /* create new dapm mixer control */ |
4b80b8c2 | 431 | static int dapm_new_mixer(struct snd_soc_dapm_widget *w) |
2b97eabc | 432 | { |
4b80b8c2 | 433 | struct snd_soc_dapm_context *dapm = w->dapm; |
2b97eabc | 434 | int i, ret = 0; |
3e5ff4df | 435 | size_t name_len, prefix_len; |
2b97eabc | 436 | struct snd_soc_dapm_path *path; |
12ea2c78 | 437 | struct snd_card *card = dapm->card->snd_card; |
efb7ac3f | 438 | const char *prefix; |
fafd2176 SW |
439 | struct snd_soc_dapm_widget_list *wlist; |
440 | size_t wlistsize; | |
efb7ac3f MB |
441 | |
442 | if (dapm->codec) | |
443 | prefix = dapm->codec->name_prefix; | |
444 | else | |
445 | prefix = NULL; | |
2b97eabc | 446 | |
3e5ff4df MB |
447 | if (prefix) |
448 | prefix_len = strlen(prefix) + 1; | |
449 | else | |
450 | prefix_len = 0; | |
451 | ||
2b97eabc RP |
452 | /* add kcontrol */ |
453 | for (i = 0; i < w->num_kcontrols; i++) { | |
454 | ||
455 | /* match name */ | |
456 | list_for_each_entry(path, &w->sources, list_sink) { | |
457 | ||
458 | /* mixer/mux paths name must match control name */ | |
82cfecdc | 459 | if (path->name != (char *)w->kcontrol_news[i].name) |
2b97eabc RP |
460 | continue; |
461 | ||
82cd8764 LPC |
462 | if (w->kcontrols[i]) { |
463 | path->kcontrol = w->kcontrols[i]; | |
464 | continue; | |
465 | } | |
466 | ||
fafd2176 SW |
467 | wlistsize = sizeof(struct snd_soc_dapm_widget_list) + |
468 | sizeof(struct snd_soc_dapm_widget *), | |
469 | wlist = kzalloc(wlistsize, GFP_KERNEL); | |
470 | if (wlist == NULL) { | |
471 | dev_err(dapm->dev, | |
472 | "asoc: can't allocate widget list for %s\n", | |
473 | w->name); | |
474 | return -ENOMEM; | |
475 | } | |
476 | wlist->num_widgets = 1; | |
477 | wlist->widgets[0] = w; | |
478 | ||
ca9c1aae IM |
479 | /* add dapm control with long name. |
480 | * for dapm_mixer this is the concatenation of the | |
481 | * mixer and kcontrol name. | |
482 | * for dapm_mixer_named_ctl this is simply the | |
483 | * kcontrol name. | |
484 | */ | |
82cfecdc | 485 | name_len = strlen(w->kcontrol_news[i].name) + 1; |
07495f3e | 486 | if (w->id != snd_soc_dapm_mixer_named_ctl) |
ca9c1aae IM |
487 | name_len += 1 + strlen(w->name); |
488 | ||
219b93f5 | 489 | path->long_name = kmalloc(name_len, GFP_KERNEL); |
ca9c1aae | 490 | |
fafd2176 SW |
491 | if (path->long_name == NULL) { |
492 | kfree(wlist); | |
2b97eabc | 493 | return -ENOMEM; |
fafd2176 | 494 | } |
2b97eabc | 495 | |
ca9c1aae | 496 | switch (w->id) { |
ca9c1aae | 497 | default: |
3e5ff4df MB |
498 | /* The control will get a prefix from |
499 | * the control creation process but | |
500 | * we're also using the same prefix | |
501 | * for widgets so cut the prefix off | |
502 | * the front of the widget name. | |
503 | */ | |
ca9c1aae | 504 | snprintf(path->long_name, name_len, "%s %s", |
3e5ff4df | 505 | w->name + prefix_len, |
82cfecdc | 506 | w->kcontrol_news[i].name); |
07495f3e | 507 | break; |
ca9c1aae IM |
508 | case snd_soc_dapm_mixer_named_ctl: |
509 | snprintf(path->long_name, name_len, "%s", | |
82cfecdc | 510 | w->kcontrol_news[i].name); |
07495f3e | 511 | break; |
ca9c1aae IM |
512 | } |
513 | ||
219b93f5 MB |
514 | path->long_name[name_len - 1] = '\0'; |
515 | ||
fafd2176 SW |
516 | path->kcontrol = snd_soc_cnew(&w->kcontrol_news[i], |
517 | wlist, path->long_name, | |
518 | prefix); | |
ce6120cc | 519 | ret = snd_ctl_add(card, path->kcontrol); |
2b97eabc | 520 | if (ret < 0) { |
f7d41ae8 JN |
521 | dev_err(dapm->dev, |
522 | "asoc: failed to add dapm kcontrol %s: %d\n", | |
523 | path->long_name, ret); | |
fafd2176 | 524 | kfree(wlist); |
2b97eabc RP |
525 | kfree(path->long_name); |
526 | path->long_name = NULL; | |
527 | return ret; | |
528 | } | |
fad59888 | 529 | w->kcontrols[i] = path->kcontrol; |
2b97eabc RP |
530 | } |
531 | } | |
532 | return ret; | |
533 | } | |
534 | ||
535 | /* create new dapm mux control */ | |
4b80b8c2 | 536 | static int dapm_new_mux(struct snd_soc_dapm_widget *w) |
2b97eabc | 537 | { |
4b80b8c2 | 538 | struct snd_soc_dapm_context *dapm = w->dapm; |
2b97eabc RP |
539 | struct snd_soc_dapm_path *path = NULL; |
540 | struct snd_kcontrol *kcontrol; | |
12ea2c78 | 541 | struct snd_card *card = dapm->card->snd_card; |
efb7ac3f | 542 | const char *prefix; |
3e5ff4df | 543 | size_t prefix_len; |
af46800b | 544 | int ret; |
fafd2176 | 545 | struct snd_soc_dapm_widget_list *wlist; |
af46800b | 546 | int shared, wlistentries; |
fafd2176 | 547 | size_t wlistsize; |
af46800b | 548 | char *name; |
2b97eabc | 549 | |
af46800b SW |
550 | if (w->num_kcontrols != 1) { |
551 | dev_err(dapm->dev, | |
552 | "asoc: mux %s has incorrect number of controls\n", | |
553 | w->name); | |
2b97eabc RP |
554 | return -EINVAL; |
555 | } | |
556 | ||
1007da06 | 557 | shared = dapm_is_shared_kcontrol(dapm, w, &w->kcontrol_news[0], |
af46800b SW |
558 | &kcontrol); |
559 | if (kcontrol) { | |
560 | wlist = kcontrol->private_data; | |
561 | wlistentries = wlist->num_widgets + 1; | |
562 | } else { | |
563 | wlist = NULL; | |
564 | wlistentries = 1; | |
565 | } | |
fafd2176 | 566 | wlistsize = sizeof(struct snd_soc_dapm_widget_list) + |
af46800b SW |
567 | wlistentries * sizeof(struct snd_soc_dapm_widget *), |
568 | wlist = krealloc(wlist, wlistsize, GFP_KERNEL); | |
fafd2176 SW |
569 | if (wlist == NULL) { |
570 | dev_err(dapm->dev, | |
571 | "asoc: can't allocate widget list for %s\n", w->name); | |
572 | return -ENOMEM; | |
573 | } | |
af46800b SW |
574 | wlist->num_widgets = wlistentries; |
575 | wlist->widgets[wlistentries - 1] = w; | |
efb7ac3f | 576 | |
af46800b SW |
577 | if (!kcontrol) { |
578 | if (dapm->codec) | |
579 | prefix = dapm->codec->name_prefix; | |
580 | else | |
581 | prefix = NULL; | |
582 | ||
583 | if (shared) { | |
584 | name = w->kcontrol_news[0].name; | |
585 | prefix_len = 0; | |
586 | } else { | |
587 | name = w->name; | |
588 | if (prefix) | |
589 | prefix_len = strlen(prefix) + 1; | |
590 | else | |
591 | prefix_len = 0; | |
592 | } | |
3e5ff4df | 593 | |
af46800b SW |
594 | /* |
595 | * The control will get a prefix from the control creation | |
596 | * process but we're also using the same prefix for widgets so | |
597 | * cut the prefix off the front of the widget name. | |
598 | */ | |
599 | kcontrol = snd_soc_cnew(&w->kcontrol_news[0], wlist, | |
600 | name + prefix_len, prefix); | |
601 | ret = snd_ctl_add(card, kcontrol); | |
602 | if (ret < 0) { | |
53daf208 MB |
603 | dev_err(dapm->dev, "failed to add kcontrol %s: %d\n", |
604 | w->name, ret); | |
af46800b SW |
605 | kfree(wlist); |
606 | return ret; | |
607 | } | |
608 | } | |
ce6120cc | 609 | |
af46800b | 610 | kcontrol->private_data = wlist; |
2b97eabc | 611 | |
fad59888 SW |
612 | w->kcontrols[0] = kcontrol; |
613 | ||
2b97eabc RP |
614 | list_for_each_entry(path, &w->sources, list_sink) |
615 | path->kcontrol = kcontrol; | |
616 | ||
af46800b | 617 | return 0; |
2b97eabc RP |
618 | } |
619 | ||
620 | /* create new dapm volume control */ | |
4b80b8c2 | 621 | static int dapm_new_pga(struct snd_soc_dapm_widget *w) |
2b97eabc | 622 | { |
a6c65736 | 623 | if (w->num_kcontrols) |
f7d41ae8 JN |
624 | dev_err(w->dapm->dev, |
625 | "asoc: PGA controls not supported: '%s'\n", w->name); | |
2b97eabc | 626 | |
a6c65736 | 627 | return 0; |
2b97eabc RP |
628 | } |
629 | ||
630 | /* reset 'walked' bit for each dapm path */ | |
ce6120cc | 631 | static inline void dapm_clear_walk(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
632 | { |
633 | struct snd_soc_dapm_path *p; | |
634 | ||
8ddab3f5 | 635 | list_for_each_entry(p, &dapm->card->paths, list) |
2b97eabc RP |
636 | p->walked = 0; |
637 | } | |
638 | ||
9949788b MB |
639 | /* We implement power down on suspend by checking the power state of |
640 | * the ALSA card - when we are suspending the ALSA state for the card | |
641 | * is set to D3. | |
642 | */ | |
643 | static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget) | |
644 | { | |
12ea2c78 | 645 | int level = snd_power_get_state(widget->dapm->card->snd_card); |
9949788b | 646 | |
f0fba2ad | 647 | switch (level) { |
9949788b MB |
648 | case SNDRV_CTL_POWER_D3hot: |
649 | case SNDRV_CTL_POWER_D3cold: | |
1547aba9 | 650 | if (widget->ignore_suspend) |
f7d41ae8 JN |
651 | dev_dbg(widget->dapm->dev, "%s ignoring suspend\n", |
652 | widget->name); | |
1547aba9 | 653 | return widget->ignore_suspend; |
9949788b MB |
654 | default: |
655 | return 1; | |
656 | } | |
657 | } | |
658 | ||
2b97eabc RP |
659 | /* |
660 | * Recursively check for a completed path to an active or physically connected | |
661 | * output widget. Returns number of complete paths. | |
662 | */ | |
663 | static int is_connected_output_ep(struct snd_soc_dapm_widget *widget) | |
664 | { | |
665 | struct snd_soc_dapm_path *path; | |
666 | int con = 0; | |
667 | ||
024dc078 MB |
668 | if (widget->outputs >= 0) |
669 | return widget->outputs; | |
670 | ||
de02d078 MB |
671 | DAPM_UPDATE_STAT(widget, path_checks); |
672 | ||
246d0a17 MB |
673 | if (widget->id == snd_soc_dapm_supply) |
674 | return 0; | |
675 | ||
010ff262 MB |
676 | switch (widget->id) { |
677 | case snd_soc_dapm_adc: | |
678 | case snd_soc_dapm_aif_out: | |
024dc078 MB |
679 | if (widget->active) { |
680 | widget->outputs = snd_soc_dapm_suspend_check(widget); | |
681 | return widget->outputs; | |
682 | } | |
010ff262 MB |
683 | default: |
684 | break; | |
685 | } | |
2b97eabc RP |
686 | |
687 | if (widget->connected) { | |
688 | /* connected pin ? */ | |
024dc078 MB |
689 | if (widget->id == snd_soc_dapm_output && !widget->ext) { |
690 | widget->outputs = snd_soc_dapm_suspend_check(widget); | |
691 | return widget->outputs; | |
692 | } | |
2b97eabc RP |
693 | |
694 | /* connected jack or spk ? */ | |
024dc078 MB |
695 | if (widget->id == snd_soc_dapm_hp || |
696 | widget->id == snd_soc_dapm_spk || | |
697 | (widget->id == snd_soc_dapm_line && | |
698 | !list_empty(&widget->sources))) { | |
699 | widget->outputs = snd_soc_dapm_suspend_check(widget); | |
700 | return widget->outputs; | |
701 | } | |
2b97eabc RP |
702 | } |
703 | ||
704 | list_for_each_entry(path, &widget->sinks, list_source) { | |
e56235e0 MB |
705 | DAPM_UPDATE_STAT(widget, neighbour_checks); |
706 | ||
bf3a9e13 MB |
707 | if (path->weak) |
708 | continue; | |
709 | ||
2b97eabc RP |
710 | if (path->walked) |
711 | continue; | |
712 | ||
713 | if (path->sink && path->connect) { | |
714 | path->walked = 1; | |
715 | con += is_connected_output_ep(path->sink); | |
716 | } | |
717 | } | |
718 | ||
024dc078 MB |
719 | widget->outputs = con; |
720 | ||
2b97eabc RP |
721 | return con; |
722 | } | |
723 | ||
724 | /* | |
725 | * Recursively check for a completed path to an active or physically connected | |
726 | * input widget. Returns number of complete paths. | |
727 | */ | |
728 | static int is_connected_input_ep(struct snd_soc_dapm_widget *widget) | |
729 | { | |
730 | struct snd_soc_dapm_path *path; | |
731 | int con = 0; | |
732 | ||
024dc078 MB |
733 | if (widget->inputs >= 0) |
734 | return widget->inputs; | |
735 | ||
de02d078 MB |
736 | DAPM_UPDATE_STAT(widget, path_checks); |
737 | ||
246d0a17 MB |
738 | if (widget->id == snd_soc_dapm_supply) |
739 | return 0; | |
740 | ||
2b97eabc | 741 | /* active stream ? */ |
010ff262 MB |
742 | switch (widget->id) { |
743 | case snd_soc_dapm_dac: | |
744 | case snd_soc_dapm_aif_in: | |
024dc078 MB |
745 | if (widget->active) { |
746 | widget->inputs = snd_soc_dapm_suspend_check(widget); | |
747 | return widget->inputs; | |
748 | } | |
010ff262 MB |
749 | default: |
750 | break; | |
751 | } | |
2b97eabc RP |
752 | |
753 | if (widget->connected) { | |
754 | /* connected pin ? */ | |
024dc078 MB |
755 | if (widget->id == snd_soc_dapm_input && !widget->ext) { |
756 | widget->inputs = snd_soc_dapm_suspend_check(widget); | |
757 | return widget->inputs; | |
758 | } | |
2b97eabc RP |
759 | |
760 | /* connected VMID/Bias for lower pops */ | |
024dc078 MB |
761 | if (widget->id == snd_soc_dapm_vmid) { |
762 | widget->inputs = snd_soc_dapm_suspend_check(widget); | |
763 | return widget->inputs; | |
764 | } | |
2b97eabc RP |
765 | |
766 | /* connected jack ? */ | |
eaeae5d9 | 767 | if (widget->id == snd_soc_dapm_mic || |
024dc078 MB |
768 | (widget->id == snd_soc_dapm_line && |
769 | !list_empty(&widget->sinks))) { | |
770 | widget->inputs = snd_soc_dapm_suspend_check(widget); | |
771 | return widget->inputs; | |
772 | } | |
773 | ||
2b97eabc RP |
774 | } |
775 | ||
776 | list_for_each_entry(path, &widget->sources, list_sink) { | |
e56235e0 MB |
777 | DAPM_UPDATE_STAT(widget, neighbour_checks); |
778 | ||
bf3a9e13 MB |
779 | if (path->weak) |
780 | continue; | |
781 | ||
2b97eabc RP |
782 | if (path->walked) |
783 | continue; | |
784 | ||
785 | if (path->source && path->connect) { | |
786 | path->walked = 1; | |
787 | con += is_connected_input_ep(path->source); | |
788 | } | |
789 | } | |
790 | ||
024dc078 MB |
791 | widget->inputs = con; |
792 | ||
2b97eabc RP |
793 | return con; |
794 | } | |
795 | ||
e2be2ccf JN |
796 | /* |
797 | * Handler for generic register modifier widget. | |
798 | */ | |
799 | int dapm_reg_event(struct snd_soc_dapm_widget *w, | |
800 | struct snd_kcontrol *kcontrol, int event) | |
801 | { | |
802 | unsigned int val; | |
803 | ||
804 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
805 | val = w->on_val; | |
806 | else | |
807 | val = w->off_val; | |
808 | ||
0445bdf4 | 809 | soc_widget_update_bits(w, -(w->reg + 1), |
e2be2ccf JN |
810 | w->mask << w->shift, val << w->shift); |
811 | ||
812 | return 0; | |
813 | } | |
11589418 | 814 | EXPORT_SYMBOL_GPL(dapm_reg_event); |
e2be2ccf | 815 | |
d805002b MB |
816 | static int dapm_widget_power_check(struct snd_soc_dapm_widget *w) |
817 | { | |
9b8a83b2 MB |
818 | if (w->power_checked) |
819 | return w->new_power; | |
820 | ||
d805002b | 821 | if (w->force) |
9b8a83b2 | 822 | w->new_power = 1; |
d805002b | 823 | else |
9b8a83b2 MB |
824 | w->new_power = w->power_check(w); |
825 | ||
826 | w->power_checked = true; | |
827 | ||
828 | return w->new_power; | |
d805002b MB |
829 | } |
830 | ||
cd0f2d47 MB |
831 | /* Generic check to see if a widget should be powered. |
832 | */ | |
833 | static int dapm_generic_check_power(struct snd_soc_dapm_widget *w) | |
834 | { | |
835 | int in, out; | |
836 | ||
de02d078 MB |
837 | DAPM_UPDATE_STAT(w, power_checks); |
838 | ||
cd0f2d47 | 839 | in = is_connected_input_ep(w); |
ce6120cc | 840 | dapm_clear_walk(w->dapm); |
cd0f2d47 | 841 | out = is_connected_output_ep(w); |
ce6120cc | 842 | dapm_clear_walk(w->dapm); |
cd0f2d47 MB |
843 | return out != 0 && in != 0; |
844 | } | |
845 | ||
6ea31b9f MB |
846 | /* Check to see if an ADC has power */ |
847 | static int dapm_adc_check_power(struct snd_soc_dapm_widget *w) | |
848 | { | |
849 | int in; | |
850 | ||
de02d078 MB |
851 | DAPM_UPDATE_STAT(w, power_checks); |
852 | ||
6ea31b9f MB |
853 | if (w->active) { |
854 | in = is_connected_input_ep(w); | |
ce6120cc | 855 | dapm_clear_walk(w->dapm); |
6ea31b9f MB |
856 | return in != 0; |
857 | } else { | |
858 | return dapm_generic_check_power(w); | |
859 | } | |
860 | } | |
861 | ||
862 | /* Check to see if a DAC has power */ | |
863 | static int dapm_dac_check_power(struct snd_soc_dapm_widget *w) | |
864 | { | |
865 | int out; | |
866 | ||
de02d078 MB |
867 | DAPM_UPDATE_STAT(w, power_checks); |
868 | ||
6ea31b9f MB |
869 | if (w->active) { |
870 | out = is_connected_output_ep(w); | |
ce6120cc | 871 | dapm_clear_walk(w->dapm); |
6ea31b9f MB |
872 | return out != 0; |
873 | } else { | |
874 | return dapm_generic_check_power(w); | |
875 | } | |
876 | } | |
877 | ||
246d0a17 MB |
878 | /* Check to see if a power supply is needed */ |
879 | static int dapm_supply_check_power(struct snd_soc_dapm_widget *w) | |
880 | { | |
881 | struct snd_soc_dapm_path *path; | |
246d0a17 | 882 | |
de02d078 MB |
883 | DAPM_UPDATE_STAT(w, power_checks); |
884 | ||
246d0a17 MB |
885 | /* Check if one of our outputs is connected */ |
886 | list_for_each_entry(path, &w->sinks, list_source) { | |
a8fdac83 MB |
887 | DAPM_UPDATE_STAT(w, neighbour_checks); |
888 | ||
bf3a9e13 MB |
889 | if (path->weak) |
890 | continue; | |
891 | ||
215edda3 MB |
892 | if (path->connected && |
893 | !path->connected(path->source, path->sink)) | |
894 | continue; | |
895 | ||
3017358a MB |
896 | if (!path->sink) |
897 | continue; | |
898 | ||
f68d7e16 MB |
899 | if (dapm_widget_power_check(path->sink)) |
900 | return 1; | |
246d0a17 MB |
901 | } |
902 | ||
ce6120cc | 903 | dapm_clear_walk(w->dapm); |
246d0a17 | 904 | |
f68d7e16 | 905 | return 0; |
246d0a17 MB |
906 | } |
907 | ||
35c64bca MB |
908 | static int dapm_always_on_check_power(struct snd_soc_dapm_widget *w) |
909 | { | |
910 | return 1; | |
911 | } | |
912 | ||
38357ab2 MB |
913 | static int dapm_seq_compare(struct snd_soc_dapm_widget *a, |
914 | struct snd_soc_dapm_widget *b, | |
828a842f | 915 | bool power_up) |
42aa3418 | 916 | { |
828a842f MB |
917 | int *sort; |
918 | ||
919 | if (power_up) | |
920 | sort = dapm_up_seq; | |
921 | else | |
922 | sort = dapm_down_seq; | |
923 | ||
38357ab2 MB |
924 | if (sort[a->id] != sort[b->id]) |
925 | return sort[a->id] - sort[b->id]; | |
20e4859d MB |
926 | if (a->subseq != b->subseq) { |
927 | if (power_up) | |
928 | return a->subseq - b->subseq; | |
929 | else | |
930 | return b->subseq - a->subseq; | |
931 | } | |
b22ead2a MB |
932 | if (a->reg != b->reg) |
933 | return a->reg - b->reg; | |
84dab567 MB |
934 | if (a->dapm != b->dapm) |
935 | return (unsigned long)a->dapm - (unsigned long)b->dapm; | |
42aa3418 | 936 | |
38357ab2 MB |
937 | return 0; |
938 | } | |
42aa3418 | 939 | |
38357ab2 MB |
940 | /* Insert a widget in order into a DAPM power sequence. */ |
941 | static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget, | |
942 | struct list_head *list, | |
828a842f | 943 | bool power_up) |
38357ab2 MB |
944 | { |
945 | struct snd_soc_dapm_widget *w; | |
946 | ||
947 | list_for_each_entry(w, list, power_list) | |
828a842f | 948 | if (dapm_seq_compare(new_widget, w, power_up) < 0) { |
38357ab2 MB |
949 | list_add_tail(&new_widget->power_list, &w->power_list); |
950 | return; | |
951 | } | |
952 | ||
953 | list_add_tail(&new_widget->power_list, list); | |
954 | } | |
955 | ||
68f89ad8 MB |
956 | static void dapm_seq_check_event(struct snd_soc_dapm_context *dapm, |
957 | struct snd_soc_dapm_widget *w, int event) | |
958 | { | |
959 | struct snd_soc_card *card = dapm->card; | |
960 | const char *ev_name; | |
961 | int power, ret; | |
962 | ||
963 | switch (event) { | |
964 | case SND_SOC_DAPM_PRE_PMU: | |
965 | ev_name = "PRE_PMU"; | |
966 | power = 1; | |
967 | break; | |
968 | case SND_SOC_DAPM_POST_PMU: | |
969 | ev_name = "POST_PMU"; | |
970 | power = 1; | |
971 | break; | |
972 | case SND_SOC_DAPM_PRE_PMD: | |
973 | ev_name = "PRE_PMD"; | |
974 | power = 0; | |
975 | break; | |
976 | case SND_SOC_DAPM_POST_PMD: | |
977 | ev_name = "POST_PMD"; | |
978 | power = 0; | |
979 | break; | |
980 | default: | |
981 | BUG(); | |
982 | return; | |
983 | } | |
984 | ||
985 | if (w->power != power) | |
986 | return; | |
987 | ||
988 | if (w->event && (w->event_flags & event)) { | |
989 | pop_dbg(dapm->dev, card->pop_time, "pop test : %s %s\n", | |
990 | w->name, ev_name); | |
84e90930 | 991 | trace_snd_soc_dapm_widget_event_start(w, event); |
68f89ad8 | 992 | ret = w->event(w, NULL, event); |
84e90930 | 993 | trace_snd_soc_dapm_widget_event_done(w, event); |
68f89ad8 MB |
994 | if (ret < 0) |
995 | pr_err("%s: %s event failed: %d\n", | |
996 | ev_name, w->name, ret); | |
997 | } | |
998 | } | |
999 | ||
b22ead2a | 1000 | /* Apply the coalesced changes from a DAPM sequence */ |
ce6120cc | 1001 | static void dapm_seq_run_coalesced(struct snd_soc_dapm_context *dapm, |
b22ead2a | 1002 | struct list_head *pending) |
163cac06 | 1003 | { |
3a45b867 | 1004 | struct snd_soc_card *card = dapm->card; |
68f89ad8 MB |
1005 | struct snd_soc_dapm_widget *w; |
1006 | int reg, power; | |
b22ead2a MB |
1007 | unsigned int value = 0; |
1008 | unsigned int mask = 0; | |
1009 | unsigned int cur_mask; | |
1010 | ||
1011 | reg = list_first_entry(pending, struct snd_soc_dapm_widget, | |
1012 | power_list)->reg; | |
1013 | ||
1014 | list_for_each_entry(w, pending, power_list) { | |
1015 | cur_mask = 1 << w->shift; | |
1016 | BUG_ON(reg != w->reg); | |
1017 | ||
1018 | if (w->invert) | |
1019 | power = !w->power; | |
1020 | else | |
1021 | power = w->power; | |
1022 | ||
1023 | mask |= cur_mask; | |
1024 | if (power) | |
1025 | value |= cur_mask; | |
1026 | ||
fd8d3bc0 | 1027 | pop_dbg(dapm->dev, card->pop_time, |
b22ead2a MB |
1028 | "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n", |
1029 | w->name, reg, value, mask); | |
81628103 | 1030 | |
68f89ad8 MB |
1031 | /* Check for events */ |
1032 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMU); | |
1033 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMD); | |
81628103 MB |
1034 | } |
1035 | ||
1036 | if (reg >= 0) { | |
29376bc7 MB |
1037 | /* Any widget will do, they should all be updating the |
1038 | * same register. | |
1039 | */ | |
1040 | w = list_first_entry(pending, struct snd_soc_dapm_widget, | |
1041 | power_list); | |
1042 | ||
fd8d3bc0 | 1043 | pop_dbg(dapm->dev, card->pop_time, |
81628103 | 1044 | "pop test : Applying 0x%x/0x%x to %x in %dms\n", |
3a45b867 JN |
1045 | value, mask, reg, card->pop_time); |
1046 | pop_wait(card->pop_time); | |
0445bdf4 | 1047 | soc_widget_update_bits(w, reg, mask, value); |
b22ead2a MB |
1048 | } |
1049 | ||
81628103 | 1050 | list_for_each_entry(w, pending, power_list) { |
68f89ad8 MB |
1051 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMU); |
1052 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMD); | |
81628103 | 1053 | } |
b22ead2a | 1054 | } |
42aa3418 | 1055 | |
b22ead2a MB |
1056 | /* Apply a DAPM power sequence. |
1057 | * | |
1058 | * We walk over a pre-sorted list of widgets to apply power to. In | |
1059 | * order to minimise the number of writes to the device required | |
1060 | * multiple widgets will be updated in a single write where possible. | |
1061 | * Currently anything that requires more than a single write is not | |
1062 | * handled. | |
1063 | */ | |
ce6120cc | 1064 | static void dapm_seq_run(struct snd_soc_dapm_context *dapm, |
828a842f | 1065 | struct list_head *list, int event, bool power_up) |
b22ead2a MB |
1066 | { |
1067 | struct snd_soc_dapm_widget *w, *n; | |
1068 | LIST_HEAD(pending); | |
1069 | int cur_sort = -1; | |
20e4859d | 1070 | int cur_subseq = -1; |
b22ead2a | 1071 | int cur_reg = SND_SOC_NOPM; |
7be31be8 | 1072 | struct snd_soc_dapm_context *cur_dapm = NULL; |
474b62d6 | 1073 | int ret, i; |
828a842f MB |
1074 | int *sort; |
1075 | ||
1076 | if (power_up) | |
1077 | sort = dapm_up_seq; | |
1078 | else | |
1079 | sort = dapm_down_seq; | |
163cac06 | 1080 | |
b22ead2a MB |
1081 | list_for_each_entry_safe(w, n, list, power_list) { |
1082 | ret = 0; | |
1083 | ||
1084 | /* Do we need to apply any queued changes? */ | |
7be31be8 | 1085 | if (sort[w->id] != cur_sort || w->reg != cur_reg || |
20e4859d | 1086 | w->dapm != cur_dapm || w->subseq != cur_subseq) { |
b22ead2a | 1087 | if (!list_empty(&pending)) |
7be31be8 | 1088 | dapm_seq_run_coalesced(cur_dapm, &pending); |
b22ead2a | 1089 | |
474b62d6 MB |
1090 | if (cur_dapm && cur_dapm->seq_notifier) { |
1091 | for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++) | |
1092 | if (sort[i] == cur_sort) | |
1093 | cur_dapm->seq_notifier(cur_dapm, | |
f85a9e0d MB |
1094 | i, |
1095 | cur_subseq); | |
474b62d6 MB |
1096 | } |
1097 | ||
b22ead2a MB |
1098 | INIT_LIST_HEAD(&pending); |
1099 | cur_sort = -1; | |
b0b3e6f8 | 1100 | cur_subseq = INT_MIN; |
b22ead2a | 1101 | cur_reg = SND_SOC_NOPM; |
7be31be8 | 1102 | cur_dapm = NULL; |
b22ead2a MB |
1103 | } |
1104 | ||
163cac06 MB |
1105 | switch (w->id) { |
1106 | case snd_soc_dapm_pre: | |
1107 | if (!w->event) | |
b22ead2a MB |
1108 | list_for_each_entry_safe_continue(w, n, list, |
1109 | power_list); | |
163cac06 | 1110 | |
b22ead2a | 1111 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
1112 | ret = w->event(w, |
1113 | NULL, SND_SOC_DAPM_PRE_PMU); | |
b22ead2a | 1114 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
1115 | ret = w->event(w, |
1116 | NULL, SND_SOC_DAPM_PRE_PMD); | |
163cac06 MB |
1117 | break; |
1118 | ||
1119 | case snd_soc_dapm_post: | |
1120 | if (!w->event) | |
b22ead2a MB |
1121 | list_for_each_entry_safe_continue(w, n, list, |
1122 | power_list); | |
163cac06 | 1123 | |
b22ead2a | 1124 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
1125 | ret = w->event(w, |
1126 | NULL, SND_SOC_DAPM_POST_PMU); | |
b22ead2a | 1127 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
1128 | ret = w->event(w, |
1129 | NULL, SND_SOC_DAPM_POST_PMD); | |
163cac06 MB |
1130 | break; |
1131 | ||
b22ead2a | 1132 | default: |
81628103 MB |
1133 | /* Queue it up for application */ |
1134 | cur_sort = sort[w->id]; | |
20e4859d | 1135 | cur_subseq = w->subseq; |
81628103 | 1136 | cur_reg = w->reg; |
7be31be8 | 1137 | cur_dapm = w->dapm; |
81628103 MB |
1138 | list_move(&w->power_list, &pending); |
1139 | break; | |
163cac06 | 1140 | } |
b22ead2a MB |
1141 | |
1142 | if (ret < 0) | |
f7d41ae8 JN |
1143 | dev_err(w->dapm->dev, |
1144 | "Failed to apply widget power: %d\n", ret); | |
6ea31b9f | 1145 | } |
b22ead2a MB |
1146 | |
1147 | if (!list_empty(&pending)) | |
28e86808 | 1148 | dapm_seq_run_coalesced(cur_dapm, &pending); |
474b62d6 MB |
1149 | |
1150 | if (cur_dapm && cur_dapm->seq_notifier) { | |
1151 | for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++) | |
1152 | if (sort[i] == cur_sort) | |
1153 | cur_dapm->seq_notifier(cur_dapm, | |
f85a9e0d | 1154 | i, cur_subseq); |
474b62d6 | 1155 | } |
42aa3418 MB |
1156 | } |
1157 | ||
97404f2e MB |
1158 | static void dapm_widget_update(struct snd_soc_dapm_context *dapm) |
1159 | { | |
1160 | struct snd_soc_dapm_update *update = dapm->update; | |
1161 | struct snd_soc_dapm_widget *w; | |
1162 | int ret; | |
1163 | ||
1164 | if (!update) | |
1165 | return; | |
1166 | ||
1167 | w = update->widget; | |
1168 | ||
1169 | if (w->event && | |
1170 | (w->event_flags & SND_SOC_DAPM_PRE_REG)) { | |
1171 | ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG); | |
1172 | if (ret != 0) | |
1173 | pr_err("%s DAPM pre-event failed: %d\n", | |
1174 | w->name, ret); | |
1175 | } | |
1176 | ||
1177 | ret = snd_soc_update_bits(w->codec, update->reg, update->mask, | |
1178 | update->val); | |
1179 | if (ret < 0) | |
1180 | pr_err("%s DAPM update failed: %d\n", w->name, ret); | |
1181 | ||
1182 | if (w->event && | |
1183 | (w->event_flags & SND_SOC_DAPM_POST_REG)) { | |
1184 | ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG); | |
1185 | if (ret != 0) | |
1186 | pr_err("%s DAPM post-event failed: %d\n", | |
1187 | w->name, ret); | |
1188 | } | |
1189 | } | |
1190 | ||
9d0624a7 MB |
1191 | /* Async callback run prior to DAPM sequences - brings to _PREPARE if |
1192 | * they're changing state. | |
1193 | */ | |
1194 | static void dapm_pre_sequence_async(void *data, async_cookie_t cookie) | |
1195 | { | |
1196 | struct snd_soc_dapm_context *d = data; | |
1197 | int ret; | |
1198 | ||
56fba41f MB |
1199 | /* If we're off and we're not supposed to be go into STANDBY */ |
1200 | if (d->bias_level == SND_SOC_BIAS_OFF && | |
1201 | d->target_bias_level != SND_SOC_BIAS_OFF) { | |
9d0624a7 MB |
1202 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY); |
1203 | if (ret != 0) | |
1204 | dev_err(d->dev, | |
1205 | "Failed to turn on bias: %d\n", ret); | |
1206 | } | |
1207 | ||
56fba41f MB |
1208 | /* Prepare for a STADDBY->ON or ON->STANDBY transition */ |
1209 | if (d->bias_level != d->target_bias_level) { | |
9d0624a7 MB |
1210 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE); |
1211 | if (ret != 0) | |
1212 | dev_err(d->dev, | |
1213 | "Failed to prepare bias: %d\n", ret); | |
1214 | } | |
1215 | } | |
1216 | ||
1217 | /* Async callback run prior to DAPM sequences - brings to their final | |
1218 | * state. | |
1219 | */ | |
1220 | static void dapm_post_sequence_async(void *data, async_cookie_t cookie) | |
1221 | { | |
1222 | struct snd_soc_dapm_context *d = data; | |
1223 | int ret; | |
1224 | ||
1225 | /* If we just powered the last thing off drop to standby bias */ | |
56fba41f MB |
1226 | if (d->bias_level == SND_SOC_BIAS_PREPARE && |
1227 | (d->target_bias_level == SND_SOC_BIAS_STANDBY || | |
1228 | d->target_bias_level == SND_SOC_BIAS_OFF)) { | |
9d0624a7 MB |
1229 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY); |
1230 | if (ret != 0) | |
1231 | dev_err(d->dev, "Failed to apply standby bias: %d\n", | |
1232 | ret); | |
1233 | } | |
97404f2e | 1234 | |
9d0624a7 | 1235 | /* If we're in standby and can support bias off then do that */ |
56fba41f MB |
1236 | if (d->bias_level == SND_SOC_BIAS_STANDBY && |
1237 | d->target_bias_level == SND_SOC_BIAS_OFF) { | |
9d0624a7 MB |
1238 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF); |
1239 | if (ret != 0) | |
1240 | dev_err(d->dev, "Failed to turn off bias: %d\n", ret); | |
1241 | } | |
1242 | ||
1243 | /* If we just powered up then move to active bias */ | |
56fba41f MB |
1244 | if (d->bias_level == SND_SOC_BIAS_PREPARE && |
1245 | d->target_bias_level == SND_SOC_BIAS_ON) { | |
9d0624a7 MB |
1246 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON); |
1247 | if (ret != 0) | |
1248 | dev_err(d->dev, "Failed to apply active bias: %d\n", | |
1249 | ret); | |
1250 | } | |
1251 | } | |
97404f2e | 1252 | |
fe4fda5d MB |
1253 | static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget *peer, |
1254 | bool power, bool connect) | |
1255 | { | |
1256 | /* If a connection is being made or broken then that update | |
1257 | * will have marked the peer dirty, otherwise the widgets are | |
1258 | * not connected and this update has no impact. */ | |
1259 | if (!connect) | |
1260 | return; | |
1261 | ||
1262 | /* If the peer is already in the state we're moving to then we | |
1263 | * won't have an impact on it. */ | |
1264 | if (power != peer->power) | |
75c1f891 | 1265 | dapm_mark_dirty(peer, "peer state change"); |
fe4fda5d MB |
1266 | } |
1267 | ||
05623c43 MB |
1268 | static void dapm_widget_set_power(struct snd_soc_dapm_widget *w, bool power, |
1269 | struct list_head *up_list, | |
1270 | struct list_head *down_list) | |
1271 | { | |
db432b41 MB |
1272 | struct snd_soc_dapm_path *path; |
1273 | ||
05623c43 MB |
1274 | if (w->power == power) |
1275 | return; | |
1276 | ||
1277 | trace_snd_soc_dapm_widget_power(w, power); | |
1278 | ||
db432b41 | 1279 | /* If we changed our power state perhaps our neigbours changed |
fe4fda5d | 1280 | * also. |
db432b41 MB |
1281 | */ |
1282 | list_for_each_entry(path, &w->sources, list_sink) { | |
1283 | if (path->source) { | |
fe4fda5d MB |
1284 | dapm_widget_set_peer_power(path->source, power, |
1285 | path->connect); | |
db432b41 MB |
1286 | } |
1287 | } | |
f3bf3e45 MB |
1288 | switch (w->id) { |
1289 | case snd_soc_dapm_supply: | |
1290 | /* Supplies can't affect their outputs, only their inputs */ | |
1291 | break; | |
1292 | default: | |
1293 | list_for_each_entry(path, &w->sinks, list_source) { | |
1294 | if (path->sink) { | |
1295 | dapm_widget_set_peer_power(path->sink, power, | |
1296 | path->connect); | |
1297 | } | |
db432b41 | 1298 | } |
f3bf3e45 | 1299 | break; |
db432b41 MB |
1300 | } |
1301 | ||
05623c43 MB |
1302 | if (power) |
1303 | dapm_seq_insert(w, up_list, true); | |
1304 | else | |
1305 | dapm_seq_insert(w, down_list, false); | |
1306 | ||
1307 | w->power = power; | |
1308 | } | |
1309 | ||
7c81beb0 MB |
1310 | static void dapm_power_one_widget(struct snd_soc_dapm_widget *w, |
1311 | struct list_head *up_list, | |
1312 | struct list_head *down_list) | |
1313 | { | |
7c81beb0 MB |
1314 | int power; |
1315 | ||
1316 | switch (w->id) { | |
1317 | case snd_soc_dapm_pre: | |
1318 | dapm_seq_insert(w, down_list, false); | |
1319 | break; | |
1320 | case snd_soc_dapm_post: | |
1321 | dapm_seq_insert(w, up_list, true); | |
1322 | break; | |
1323 | ||
1324 | default: | |
d805002b | 1325 | power = dapm_widget_power_check(w); |
7c81beb0 | 1326 | |
05623c43 | 1327 | dapm_widget_set_power(w, power, up_list, down_list); |
7c81beb0 MB |
1328 | break; |
1329 | } | |
1330 | } | |
1331 | ||
2b97eabc RP |
1332 | /* |
1333 | * Scan each dapm widget for complete audio path. | |
1334 | * A complete path is a route that has valid endpoints i.e.:- | |
1335 | * | |
1336 | * o DAC to output pin. | |
1337 | * o Input Pin to ADC. | |
1338 | * o Input pin to Output pin (bypass, sidetone) | |
1339 | * o DAC to ADC (loopback). | |
1340 | */ | |
ce6120cc | 1341 | static int dapm_power_widgets(struct snd_soc_dapm_context *dapm, int event) |
2b97eabc | 1342 | { |
12ea2c78 | 1343 | struct snd_soc_card *card = dapm->card; |
2b97eabc | 1344 | struct snd_soc_dapm_widget *w; |
7be31be8 | 1345 | struct snd_soc_dapm_context *d; |
291f3bbc MB |
1346 | LIST_HEAD(up_list); |
1347 | LIST_HEAD(down_list); | |
9d0624a7 | 1348 | LIST_HEAD(async_domain); |
56fba41f | 1349 | enum snd_soc_bias_level bias; |
6d3ddc81 | 1350 | |
84e90930 MB |
1351 | trace_snd_soc_dapm_start(card); |
1352 | ||
56fba41f MB |
1353 | list_for_each_entry(d, &card->dapm_list, list) { |
1354 | if (d->n_widgets || d->codec == NULL) { | |
1355 | if (d->idle_bias_off) | |
1356 | d->target_bias_level = SND_SOC_BIAS_OFF; | |
1357 | else | |
1358 | d->target_bias_level = SND_SOC_BIAS_STANDBY; | |
1359 | } | |
1360 | } | |
7be31be8 | 1361 | |
de02d078 MB |
1362 | memset(&card->dapm_stats, 0, sizeof(card->dapm_stats)); |
1363 | ||
9b8a83b2 MB |
1364 | list_for_each_entry(w, &card->widgets, list) { |
1365 | w->power_checked = false; | |
024dc078 MB |
1366 | w->inputs = -1; |
1367 | w->outputs = -1; | |
9b8a83b2 MB |
1368 | } |
1369 | ||
6d3ddc81 | 1370 | /* Check which widgets we need to power and store them in |
db432b41 MB |
1371 | * lists indicating if they should be powered up or down. We |
1372 | * only check widgets that have been flagged as dirty but note | |
1373 | * that new widgets may be added to the dirty list while we | |
1374 | * iterate. | |
6d3ddc81 | 1375 | */ |
db432b41 | 1376 | list_for_each_entry(w, &card->dapm_dirty, dirty) { |
7c81beb0 | 1377 | dapm_power_one_widget(w, &up_list, &down_list); |
2b97eabc RP |
1378 | } |
1379 | ||
f9de6d74 | 1380 | list_for_each_entry(w, &card->widgets, list) { |
db432b41 MB |
1381 | list_del_init(&w->dirty); |
1382 | ||
f9de6d74 MB |
1383 | if (w->power) { |
1384 | d = w->dapm; | |
1385 | ||
1386 | /* Supplies and micbiases only bring the | |
1387 | * context up to STANDBY as unless something | |
1388 | * else is active and passing audio they | |
1389 | * generally don't require full power. | |
1390 | */ | |
1391 | switch (w->id) { | |
1392 | case snd_soc_dapm_supply: | |
1393 | case snd_soc_dapm_micbias: | |
1394 | if (d->target_bias_level < SND_SOC_BIAS_STANDBY) | |
1395 | d->target_bias_level = SND_SOC_BIAS_STANDBY; | |
1396 | break; | |
1397 | default: | |
1398 | d->target_bias_level = SND_SOC_BIAS_ON; | |
1399 | break; | |
1400 | } | |
1401 | } | |
1402 | ||
1403 | } | |
1404 | ||
b14b76a5 MB |
1405 | /* If there are no DAPM widgets then try to figure out power from the |
1406 | * event type. | |
1407 | */ | |
97c866de | 1408 | if (!dapm->n_widgets) { |
b14b76a5 MB |
1409 | switch (event) { |
1410 | case SND_SOC_DAPM_STREAM_START: | |
1411 | case SND_SOC_DAPM_STREAM_RESUME: | |
56fba41f | 1412 | dapm->target_bias_level = SND_SOC_BIAS_ON; |
b14b76a5 | 1413 | break; |
862af8ad | 1414 | case SND_SOC_DAPM_STREAM_STOP: |
56fba41f MB |
1415 | if (dapm->codec->active) |
1416 | dapm->target_bias_level = SND_SOC_BIAS_ON; | |
1417 | else | |
1418 | dapm->target_bias_level = SND_SOC_BIAS_STANDBY; | |
862af8ad | 1419 | break; |
50b6bce5 | 1420 | case SND_SOC_DAPM_STREAM_SUSPEND: |
56fba41f | 1421 | dapm->target_bias_level = SND_SOC_BIAS_STANDBY; |
50b6bce5 | 1422 | break; |
b14b76a5 | 1423 | case SND_SOC_DAPM_STREAM_NOP: |
56fba41f | 1424 | dapm->target_bias_level = dapm->bias_level; |
50b6bce5 | 1425 | break; |
b14b76a5 MB |
1426 | default: |
1427 | break; | |
1428 | } | |
1429 | } | |
1430 | ||
85a843c5 MB |
1431 | /* Force all contexts in the card to the same bias state if |
1432 | * they're not ground referenced. | |
1433 | */ | |
56fba41f | 1434 | bias = SND_SOC_BIAS_OFF; |
52ba67bf | 1435 | list_for_each_entry(d, &card->dapm_list, list) |
56fba41f MB |
1436 | if (d->target_bias_level > bias) |
1437 | bias = d->target_bias_level; | |
52ba67bf | 1438 | list_for_each_entry(d, &card->dapm_list, list) |
85a843c5 MB |
1439 | if (!d->idle_bias_off) |
1440 | d->target_bias_level = bias; | |
52ba67bf | 1441 | |
de02d078 | 1442 | trace_snd_soc_dapm_walk_done(card); |
52ba67bf | 1443 | |
9d0624a7 MB |
1444 | /* Run all the bias changes in parallel */ |
1445 | list_for_each_entry(d, &dapm->card->dapm_list, list) | |
1446 | async_schedule_domain(dapm_pre_sequence_async, d, | |
1447 | &async_domain); | |
1448 | async_synchronize_full_domain(&async_domain); | |
452c5eaa | 1449 | |
6d3ddc81 | 1450 | /* Power down widgets first; try to avoid amplifying pops. */ |
828a842f | 1451 | dapm_seq_run(dapm, &down_list, event, false); |
2b97eabc | 1452 | |
97404f2e MB |
1453 | dapm_widget_update(dapm); |
1454 | ||
6d3ddc81 | 1455 | /* Now power up. */ |
828a842f | 1456 | dapm_seq_run(dapm, &up_list, event, true); |
2b97eabc | 1457 | |
9d0624a7 MB |
1458 | /* Run all the bias changes in parallel */ |
1459 | list_for_each_entry(d, &dapm->card->dapm_list, list) | |
1460 | async_schedule_domain(dapm_post_sequence_async, d, | |
1461 | &async_domain); | |
1462 | async_synchronize_full_domain(&async_domain); | |
452c5eaa | 1463 | |
fd8d3bc0 JN |
1464 | pop_dbg(dapm->dev, card->pop_time, |
1465 | "DAPM sequencing finished, waiting %dms\n", card->pop_time); | |
3a45b867 | 1466 | pop_wait(card->pop_time); |
cb507e7e | 1467 | |
84e90930 MB |
1468 | trace_snd_soc_dapm_done(card); |
1469 | ||
42aa3418 | 1470 | return 0; |
2b97eabc RP |
1471 | } |
1472 | ||
79fb9387 MB |
1473 | #ifdef CONFIG_DEBUG_FS |
1474 | static int dapm_widget_power_open_file(struct inode *inode, struct file *file) | |
1475 | { | |
1476 | file->private_data = inode->i_private; | |
1477 | return 0; | |
1478 | } | |
1479 | ||
1480 | static ssize_t dapm_widget_power_read_file(struct file *file, | |
1481 | char __user *user_buf, | |
1482 | size_t count, loff_t *ppos) | |
1483 | { | |
1484 | struct snd_soc_dapm_widget *w = file->private_data; | |
1485 | char *buf; | |
1486 | int in, out; | |
1487 | ssize_t ret; | |
1488 | struct snd_soc_dapm_path *p = NULL; | |
1489 | ||
1490 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); | |
1491 | if (!buf) | |
1492 | return -ENOMEM; | |
1493 | ||
1494 | in = is_connected_input_ep(w); | |
ce6120cc | 1495 | dapm_clear_walk(w->dapm); |
79fb9387 | 1496 | out = is_connected_output_ep(w); |
ce6120cc | 1497 | dapm_clear_walk(w->dapm); |
79fb9387 | 1498 | |
d033c36a | 1499 | ret = snprintf(buf, PAGE_SIZE, "%s: %s in %d out %d", |
79fb9387 MB |
1500 | w->name, w->power ? "On" : "Off", in, out); |
1501 | ||
d033c36a MB |
1502 | if (w->reg >= 0) |
1503 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
1504 | " - R%d(0x%x) bit %d", | |
1505 | w->reg, w->reg, w->shift); | |
1506 | ||
1507 | ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n"); | |
1508 | ||
3eef08ba MB |
1509 | if (w->sname) |
1510 | ret += snprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n", | |
1511 | w->sname, | |
1512 | w->active ? "active" : "inactive"); | |
79fb9387 MB |
1513 | |
1514 | list_for_each_entry(p, &w->sources, list_sink) { | |
215edda3 MB |
1515 | if (p->connected && !p->connected(w, p->sink)) |
1516 | continue; | |
1517 | ||
79fb9387 MB |
1518 | if (p->connect) |
1519 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
67f5ed6e | 1520 | " in \"%s\" \"%s\"\n", |
79fb9387 MB |
1521 | p->name ? p->name : "static", |
1522 | p->source->name); | |
1523 | } | |
1524 | list_for_each_entry(p, &w->sinks, list_source) { | |
215edda3 MB |
1525 | if (p->connected && !p->connected(w, p->sink)) |
1526 | continue; | |
1527 | ||
79fb9387 MB |
1528 | if (p->connect) |
1529 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
67f5ed6e | 1530 | " out \"%s\" \"%s\"\n", |
79fb9387 MB |
1531 | p->name ? p->name : "static", |
1532 | p->sink->name); | |
1533 | } | |
1534 | ||
1535 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); | |
1536 | ||
1537 | kfree(buf); | |
1538 | return ret; | |
1539 | } | |
1540 | ||
1541 | static const struct file_operations dapm_widget_power_fops = { | |
1542 | .open = dapm_widget_power_open_file, | |
1543 | .read = dapm_widget_power_read_file, | |
6038f373 | 1544 | .llseek = default_llseek, |
79fb9387 MB |
1545 | }; |
1546 | ||
ef49e4fa MB |
1547 | static int dapm_bias_open_file(struct inode *inode, struct file *file) |
1548 | { | |
1549 | file->private_data = inode->i_private; | |
1550 | return 0; | |
1551 | } | |
1552 | ||
1553 | static ssize_t dapm_bias_read_file(struct file *file, char __user *user_buf, | |
1554 | size_t count, loff_t *ppos) | |
1555 | { | |
1556 | struct snd_soc_dapm_context *dapm = file->private_data; | |
1557 | char *level; | |
1558 | ||
1559 | switch (dapm->bias_level) { | |
1560 | case SND_SOC_BIAS_ON: | |
1561 | level = "On\n"; | |
1562 | break; | |
1563 | case SND_SOC_BIAS_PREPARE: | |
1564 | level = "Prepare\n"; | |
1565 | break; | |
1566 | case SND_SOC_BIAS_STANDBY: | |
1567 | level = "Standby\n"; | |
1568 | break; | |
1569 | case SND_SOC_BIAS_OFF: | |
1570 | level = "Off\n"; | |
1571 | break; | |
1572 | default: | |
1573 | BUG(); | |
1574 | level = "Unknown\n"; | |
1575 | break; | |
1576 | } | |
1577 | ||
1578 | return simple_read_from_buffer(user_buf, count, ppos, level, | |
1579 | strlen(level)); | |
1580 | } | |
1581 | ||
1582 | static const struct file_operations dapm_bias_fops = { | |
1583 | .open = dapm_bias_open_file, | |
1584 | .read = dapm_bias_read_file, | |
1585 | .llseek = default_llseek, | |
1586 | }; | |
1587 | ||
8eecaf62 LPC |
1588 | void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm, |
1589 | struct dentry *parent) | |
79fb9387 | 1590 | { |
79fb9387 MB |
1591 | struct dentry *d; |
1592 | ||
8eecaf62 LPC |
1593 | dapm->debugfs_dapm = debugfs_create_dir("dapm", parent); |
1594 | ||
1595 | if (!dapm->debugfs_dapm) { | |
1596 | printk(KERN_WARNING | |
1597 | "Failed to create DAPM debugfs directory\n"); | |
79fb9387 | 1598 | return; |
8eecaf62 | 1599 | } |
79fb9387 | 1600 | |
ef49e4fa MB |
1601 | d = debugfs_create_file("bias_level", 0444, |
1602 | dapm->debugfs_dapm, dapm, | |
1603 | &dapm_bias_fops); | |
1604 | if (!d) | |
1605 | dev_warn(dapm->dev, | |
1606 | "ASoC: Failed to create bias level debugfs file\n"); | |
d5d1e0be | 1607 | } |
ef49e4fa | 1608 | |
d5d1e0be LPC |
1609 | static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w) |
1610 | { | |
1611 | struct snd_soc_dapm_context *dapm = w->dapm; | |
1612 | struct dentry *d; | |
79fb9387 | 1613 | |
d5d1e0be LPC |
1614 | if (!dapm->debugfs_dapm || !w->name) |
1615 | return; | |
1616 | ||
1617 | d = debugfs_create_file(w->name, 0444, | |
1618 | dapm->debugfs_dapm, w, | |
1619 | &dapm_widget_power_fops); | |
1620 | if (!d) | |
1621 | dev_warn(w->dapm->dev, | |
1622 | "ASoC: Failed to create %s debugfs file\n", | |
1623 | w->name); | |
79fb9387 | 1624 | } |
d5d1e0be | 1625 | |
6c45e126 LPC |
1626 | static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm) |
1627 | { | |
1628 | debugfs_remove_recursive(dapm->debugfs_dapm); | |
1629 | } | |
1630 | ||
79fb9387 | 1631 | #else |
8eecaf62 LPC |
1632 | void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm, |
1633 | struct dentry *parent) | |
79fb9387 MB |
1634 | { |
1635 | } | |
d5d1e0be LPC |
1636 | |
1637 | static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w) | |
1638 | { | |
1639 | } | |
1640 | ||
6c45e126 LPC |
1641 | static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm) |
1642 | { | |
1643 | } | |
1644 | ||
79fb9387 MB |
1645 | #endif |
1646 | ||
2b97eabc | 1647 | /* test and update the power status of a mux widget */ |
d9c96cf3 | 1648 | static int dapm_mux_update_power(struct snd_soc_dapm_widget *widget, |
3a65577d MB |
1649 | struct snd_kcontrol *kcontrol, int change, |
1650 | int mux, struct soc_enum *e) | |
2b97eabc RP |
1651 | { |
1652 | struct snd_soc_dapm_path *path; | |
1653 | int found = 0; | |
1654 | ||
eff317d0 | 1655 | if (widget->id != snd_soc_dapm_mux && |
24ff33ac | 1656 | widget->id != snd_soc_dapm_virt_mux && |
eff317d0 | 1657 | widget->id != snd_soc_dapm_value_mux) |
2b97eabc RP |
1658 | return -ENODEV; |
1659 | ||
3a65577d | 1660 | if (!change) |
2b97eabc RP |
1661 | return 0; |
1662 | ||
1663 | /* find dapm widget path assoc with kcontrol */ | |
8ddab3f5 | 1664 | list_for_each_entry(path, &widget->dapm->card->paths, list) { |
2b97eabc RP |
1665 | if (path->kcontrol != kcontrol) |
1666 | continue; | |
1667 | ||
cb01e2b9 | 1668 | if (!path->name || !e->texts[mux]) |
2b97eabc RP |
1669 | continue; |
1670 | ||
1671 | found = 1; | |
1672 | /* we now need to match the string in the enum to the path */ | |
db432b41 | 1673 | if (!(strcmp(path->name, e->texts[mux]))) { |
2b97eabc | 1674 | path->connect = 1; /* new connection */ |
75c1f891 | 1675 | dapm_mark_dirty(path->source, "mux connection"); |
db432b41 MB |
1676 | } else { |
1677 | if (path->connect) | |
75c1f891 MB |
1678 | dapm_mark_dirty(path->source, |
1679 | "mux disconnection"); | |
2b97eabc | 1680 | path->connect = 0; /* old connection must be powered down */ |
db432b41 | 1681 | } |
2b97eabc RP |
1682 | } |
1683 | ||
db432b41 | 1684 | if (found) { |
75c1f891 | 1685 | dapm_mark_dirty(widget, "mux change"); |
ce6120cc | 1686 | dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP); |
db432b41 | 1687 | } |
2b97eabc RP |
1688 | |
1689 | return 0; | |
1690 | } | |
2b97eabc | 1691 | |
1b075e3f | 1692 | /* test and update the power status of a mixer or switch widget */ |
d9c96cf3 | 1693 | static int dapm_mixer_update_power(struct snd_soc_dapm_widget *widget, |
283375ce | 1694 | struct snd_kcontrol *kcontrol, int connect) |
2b97eabc RP |
1695 | { |
1696 | struct snd_soc_dapm_path *path; | |
1697 | int found = 0; | |
1698 | ||
1b075e3f | 1699 | if (widget->id != snd_soc_dapm_mixer && |
ca9c1aae | 1700 | widget->id != snd_soc_dapm_mixer_named_ctl && |
1b075e3f | 1701 | widget->id != snd_soc_dapm_switch) |
2b97eabc RP |
1702 | return -ENODEV; |
1703 | ||
2b97eabc | 1704 | /* find dapm widget path assoc with kcontrol */ |
8ddab3f5 | 1705 | list_for_each_entry(path, &widget->dapm->card->paths, list) { |
2b97eabc RP |
1706 | if (path->kcontrol != kcontrol) |
1707 | continue; | |
1708 | ||
1709 | /* found, now check type */ | |
1710 | found = 1; | |
283375ce | 1711 | path->connect = connect; |
75c1f891 | 1712 | dapm_mark_dirty(path->source, "mixer connection"); |
2b97eabc RP |
1713 | } |
1714 | ||
db432b41 | 1715 | if (found) { |
75c1f891 | 1716 | dapm_mark_dirty(widget, "mixer update"); |
ce6120cc | 1717 | dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP); |
db432b41 | 1718 | } |
2b97eabc RP |
1719 | |
1720 | return 0; | |
1721 | } | |
2b97eabc RP |
1722 | |
1723 | /* show dapm widget status in sys fs */ | |
1724 | static ssize_t dapm_widget_show(struct device *dev, | |
1725 | struct device_attribute *attr, char *buf) | |
1726 | { | |
f0fba2ad LG |
1727 | struct snd_soc_pcm_runtime *rtd = |
1728 | container_of(dev, struct snd_soc_pcm_runtime, dev); | |
1729 | struct snd_soc_codec *codec =rtd->codec; | |
2b97eabc RP |
1730 | struct snd_soc_dapm_widget *w; |
1731 | int count = 0; | |
1732 | char *state = "not set"; | |
1733 | ||
97c866de JN |
1734 | list_for_each_entry(w, &codec->card->widgets, list) { |
1735 | if (w->dapm != &codec->dapm) | |
1736 | continue; | |
2b97eabc RP |
1737 | |
1738 | /* only display widgets that burnm power */ | |
1739 | switch (w->id) { | |
1740 | case snd_soc_dapm_hp: | |
1741 | case snd_soc_dapm_mic: | |
1742 | case snd_soc_dapm_spk: | |
1743 | case snd_soc_dapm_line: | |
1744 | case snd_soc_dapm_micbias: | |
1745 | case snd_soc_dapm_dac: | |
1746 | case snd_soc_dapm_adc: | |
1747 | case snd_soc_dapm_pga: | |
d88429a6 | 1748 | case snd_soc_dapm_out_drv: |
2b97eabc | 1749 | case snd_soc_dapm_mixer: |
ca9c1aae | 1750 | case snd_soc_dapm_mixer_named_ctl: |
246d0a17 | 1751 | case snd_soc_dapm_supply: |
2b97eabc RP |
1752 | if (w->name) |
1753 | count += sprintf(buf + count, "%s: %s\n", | |
1754 | w->name, w->power ? "On":"Off"); | |
1755 | break; | |
1756 | default: | |
1757 | break; | |
1758 | } | |
1759 | } | |
1760 | ||
ce6120cc | 1761 | switch (codec->dapm.bias_level) { |
0be9898a MB |
1762 | case SND_SOC_BIAS_ON: |
1763 | state = "On"; | |
2b97eabc | 1764 | break; |
0be9898a MB |
1765 | case SND_SOC_BIAS_PREPARE: |
1766 | state = "Prepare"; | |
2b97eabc | 1767 | break; |
0be9898a MB |
1768 | case SND_SOC_BIAS_STANDBY: |
1769 | state = "Standby"; | |
2b97eabc | 1770 | break; |
0be9898a MB |
1771 | case SND_SOC_BIAS_OFF: |
1772 | state = "Off"; | |
2b97eabc RP |
1773 | break; |
1774 | } | |
1775 | count += sprintf(buf + count, "PM State: %s\n", state); | |
1776 | ||
1777 | return count; | |
1778 | } | |
1779 | ||
1780 | static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL); | |
1781 | ||
1782 | int snd_soc_dapm_sys_add(struct device *dev) | |
1783 | { | |
12ef193d | 1784 | return device_create_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1785 | } |
1786 | ||
1787 | static void snd_soc_dapm_sys_remove(struct device *dev) | |
1788 | { | |
aef90843 | 1789 | device_remove_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1790 | } |
1791 | ||
1792 | /* free all dapm widgets and resources */ | |
ce6120cc | 1793 | static void dapm_free_widgets(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
1794 | { |
1795 | struct snd_soc_dapm_widget *w, *next_w; | |
1796 | struct snd_soc_dapm_path *p, *next_p; | |
1797 | ||
97c866de JN |
1798 | list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) { |
1799 | if (w->dapm != dapm) | |
1800 | continue; | |
2b97eabc | 1801 | list_del(&w->list); |
8ddab3f5 JN |
1802 | /* |
1803 | * remove source and sink paths associated to this widget. | |
1804 | * While removing the path, remove reference to it from both | |
1805 | * source and sink widgets so that path is removed only once. | |
1806 | */ | |
1807 | list_for_each_entry_safe(p, next_p, &w->sources, list_sink) { | |
1808 | list_del(&p->list_sink); | |
1809 | list_del(&p->list_source); | |
1810 | list_del(&p->list); | |
1811 | kfree(p->long_name); | |
1812 | kfree(p); | |
1813 | } | |
1814 | list_for_each_entry_safe(p, next_p, &w->sinks, list_source) { | |
1815 | list_del(&p->list_sink); | |
1816 | list_del(&p->list_source); | |
1817 | list_del(&p->list); | |
1818 | kfree(p->long_name); | |
1819 | kfree(p); | |
1820 | } | |
fad59888 | 1821 | kfree(w->kcontrols); |
ead9b919 | 1822 | kfree(w->name); |
2b97eabc RP |
1823 | kfree(w); |
1824 | } | |
2b97eabc RP |
1825 | } |
1826 | ||
91a5fca4 LPC |
1827 | static struct snd_soc_dapm_widget *dapm_find_widget( |
1828 | struct snd_soc_dapm_context *dapm, const char *pin, | |
1829 | bool search_other_contexts) | |
a5302181 LG |
1830 | { |
1831 | struct snd_soc_dapm_widget *w; | |
91a5fca4 | 1832 | struct snd_soc_dapm_widget *fallback = NULL; |
a5302181 | 1833 | |
97c866de | 1834 | list_for_each_entry(w, &dapm->card->widgets, list) { |
a5302181 | 1835 | if (!strcmp(w->name, pin)) { |
91a5fca4 LPC |
1836 | if (w->dapm == dapm) |
1837 | return w; | |
1838 | else | |
1839 | fallback = w; | |
a5302181 LG |
1840 | } |
1841 | } | |
1842 | ||
91a5fca4 LPC |
1843 | if (search_other_contexts) |
1844 | return fallback; | |
1845 | ||
1846 | return NULL; | |
1847 | } | |
1848 | ||
1849 | static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm, | |
1850 | const char *pin, int status) | |
1851 | { | |
1852 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); | |
1853 | ||
1854 | if (!w) { | |
1855 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); | |
1856 | return -EINVAL; | |
0d86733c MB |
1857 | } |
1858 | ||
91a5fca4 LPC |
1859 | w->connected = status; |
1860 | if (status == 0) | |
1861 | w->force = 0; | |
75c1f891 | 1862 | dapm_mark_dirty(w, "pin configuration"); |
91a5fca4 LPC |
1863 | |
1864 | return 0; | |
a5302181 LG |
1865 | } |
1866 | ||
2b97eabc | 1867 | /** |
a5302181 | 1868 | * snd_soc_dapm_sync - scan and power dapm paths |
ce6120cc | 1869 | * @dapm: DAPM context |
2b97eabc RP |
1870 | * |
1871 | * Walks all dapm audio paths and powers widgets according to their | |
1872 | * stream or path usage. | |
1873 | * | |
1874 | * Returns 0 for success. | |
1875 | */ | |
ce6120cc | 1876 | int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm) |
2b97eabc | 1877 | { |
4f4c0072 MB |
1878 | /* |
1879 | * Suppress early reports (eg, jacks syncing their state) to avoid | |
1880 | * silly DAPM runs during card startup. | |
1881 | */ | |
1882 | if (!dapm->card || !dapm->card->instantiated) | |
1883 | return 0; | |
1884 | ||
ce6120cc | 1885 | return dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc | 1886 | } |
a5302181 | 1887 | EXPORT_SYMBOL_GPL(snd_soc_dapm_sync); |
2b97eabc | 1888 | |
ce6120cc | 1889 | static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm, |
215edda3 | 1890 | const struct snd_soc_dapm_route *route) |
2b97eabc RP |
1891 | { |
1892 | struct snd_soc_dapm_path *path; | |
1893 | struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w; | |
97c866de | 1894 | struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL; |
ead9b919 | 1895 | const char *sink; |
215edda3 | 1896 | const char *control = route->control; |
ead9b919 JN |
1897 | const char *source; |
1898 | char prefixed_sink[80]; | |
1899 | char prefixed_source[80]; | |
2b97eabc RP |
1900 | int ret = 0; |
1901 | ||
88e8b9a8 | 1902 | if (dapm->codec && dapm->codec->name_prefix) { |
ead9b919 JN |
1903 | snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s", |
1904 | dapm->codec->name_prefix, route->sink); | |
1905 | sink = prefixed_sink; | |
1906 | snprintf(prefixed_source, sizeof(prefixed_source), "%s %s", | |
1907 | dapm->codec->name_prefix, route->source); | |
1908 | source = prefixed_source; | |
1909 | } else { | |
1910 | sink = route->sink; | |
1911 | source = route->source; | |
1912 | } | |
1913 | ||
97c866de JN |
1914 | /* |
1915 | * find src and dest widgets over all widgets but favor a widget from | |
1916 | * current DAPM context | |
1917 | */ | |
1918 | list_for_each_entry(w, &dapm->card->widgets, list) { | |
2b97eabc | 1919 | if (!wsink && !(strcmp(w->name, sink))) { |
97c866de JN |
1920 | wtsink = w; |
1921 | if (w->dapm == dapm) | |
1922 | wsink = w; | |
2b97eabc RP |
1923 | continue; |
1924 | } | |
1925 | if (!wsource && !(strcmp(w->name, source))) { | |
97c866de JN |
1926 | wtsource = w; |
1927 | if (w->dapm == dapm) | |
1928 | wsource = w; | |
2b97eabc RP |
1929 | } |
1930 | } | |
97c866de JN |
1931 | /* use widget from another DAPM context if not found from this */ |
1932 | if (!wsink) | |
1933 | wsink = wtsink; | |
1934 | if (!wsource) | |
1935 | wsource = wtsource; | |
2b97eabc RP |
1936 | |
1937 | if (wsource == NULL || wsink == NULL) | |
1938 | return -ENODEV; | |
1939 | ||
1940 | path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL); | |
1941 | if (!path) | |
1942 | return -ENOMEM; | |
1943 | ||
1944 | path->source = wsource; | |
1945 | path->sink = wsink; | |
215edda3 | 1946 | path->connected = route->connected; |
2b97eabc RP |
1947 | INIT_LIST_HEAD(&path->list); |
1948 | INIT_LIST_HEAD(&path->list_source); | |
1949 | INIT_LIST_HEAD(&path->list_sink); | |
1950 | ||
1951 | /* check for external widgets */ | |
1952 | if (wsink->id == snd_soc_dapm_input) { | |
1953 | if (wsource->id == snd_soc_dapm_micbias || | |
1954 | wsource->id == snd_soc_dapm_mic || | |
087d53ab RC |
1955 | wsource->id == snd_soc_dapm_line || |
1956 | wsource->id == snd_soc_dapm_output) | |
2b97eabc RP |
1957 | wsink->ext = 1; |
1958 | } | |
1959 | if (wsource->id == snd_soc_dapm_output) { | |
1960 | if (wsink->id == snd_soc_dapm_spk || | |
1961 | wsink->id == snd_soc_dapm_hp || | |
1e39221e SF |
1962 | wsink->id == snd_soc_dapm_line || |
1963 | wsink->id == snd_soc_dapm_input) | |
2b97eabc RP |
1964 | wsource->ext = 1; |
1965 | } | |
1966 | ||
1967 | /* connect static paths */ | |
1968 | if (control == NULL) { | |
8ddab3f5 | 1969 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
1970 | list_add(&path->list_sink, &wsink->sources); |
1971 | list_add(&path->list_source, &wsource->sinks); | |
1972 | path->connect = 1; | |
1973 | return 0; | |
1974 | } | |
1975 | ||
1976 | /* connect dynamic paths */ | |
dc2bea61 | 1977 | switch (wsink->id) { |
2b97eabc RP |
1978 | case snd_soc_dapm_adc: |
1979 | case snd_soc_dapm_dac: | |
1980 | case snd_soc_dapm_pga: | |
d88429a6 | 1981 | case snd_soc_dapm_out_drv: |
2b97eabc RP |
1982 | case snd_soc_dapm_input: |
1983 | case snd_soc_dapm_output: | |
1984 | case snd_soc_dapm_micbias: | |
1985 | case snd_soc_dapm_vmid: | |
1986 | case snd_soc_dapm_pre: | |
1987 | case snd_soc_dapm_post: | |
246d0a17 | 1988 | case snd_soc_dapm_supply: |
010ff262 MB |
1989 | case snd_soc_dapm_aif_in: |
1990 | case snd_soc_dapm_aif_out: | |
8ddab3f5 | 1991 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
1992 | list_add(&path->list_sink, &wsink->sources); |
1993 | list_add(&path->list_source, &wsource->sinks); | |
1994 | path->connect = 1; | |
1995 | return 0; | |
1996 | case snd_soc_dapm_mux: | |
24ff33ac | 1997 | case snd_soc_dapm_virt_mux: |
74155556 | 1998 | case snd_soc_dapm_value_mux: |
ce6120cc | 1999 | ret = dapm_connect_mux(dapm, wsource, wsink, path, control, |
82cfecdc | 2000 | &wsink->kcontrol_news[0]); |
2b97eabc RP |
2001 | if (ret != 0) |
2002 | goto err; | |
2003 | break; | |
2004 | case snd_soc_dapm_switch: | |
2005 | case snd_soc_dapm_mixer: | |
ca9c1aae | 2006 | case snd_soc_dapm_mixer_named_ctl: |
ce6120cc | 2007 | ret = dapm_connect_mixer(dapm, wsource, wsink, path, control); |
2b97eabc RP |
2008 | if (ret != 0) |
2009 | goto err; | |
2010 | break; | |
2011 | case snd_soc_dapm_hp: | |
2012 | case snd_soc_dapm_mic: | |
2013 | case snd_soc_dapm_line: | |
2014 | case snd_soc_dapm_spk: | |
8ddab3f5 | 2015 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
2016 | list_add(&path->list_sink, &wsink->sources); |
2017 | list_add(&path->list_source, &wsource->sinks); | |
2018 | path->connect = 0; | |
2019 | return 0; | |
2020 | } | |
2021 | return 0; | |
2022 | ||
2023 | err: | |
f7d41ae8 JN |
2024 | dev_warn(dapm->dev, "asoc: no dapm match for %s --> %s --> %s\n", |
2025 | source, control, sink); | |
2b97eabc RP |
2026 | kfree(path); |
2027 | return ret; | |
2028 | } | |
105f1c28 | 2029 | |
105f1c28 MB |
2030 | /** |
2031 | * snd_soc_dapm_add_routes - Add routes between DAPM widgets | |
ce6120cc | 2032 | * @dapm: DAPM context |
105f1c28 MB |
2033 | * @route: audio routes |
2034 | * @num: number of routes | |
2035 | * | |
2036 | * Connects 2 dapm widgets together via a named audio path. The sink is | |
2037 | * the widget receiving the audio signal, whilst the source is the sender | |
2038 | * of the audio signal. | |
2039 | * | |
2040 | * Returns 0 for success else error. On error all resources can be freed | |
2041 | * with a call to snd_soc_card_free(). | |
2042 | */ | |
ce6120cc | 2043 | int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm, |
105f1c28 MB |
2044 | const struct snd_soc_dapm_route *route, int num) |
2045 | { | |
2046 | int i, ret; | |
2047 | ||
2048 | for (i = 0; i < num; i++) { | |
ce6120cc | 2049 | ret = snd_soc_dapm_add_route(dapm, route); |
105f1c28 | 2050 | if (ret < 0) { |
f7d41ae8 JN |
2051 | dev_err(dapm->dev, "Failed to add route %s->%s\n", |
2052 | route->source, route->sink); | |
105f1c28 MB |
2053 | return ret; |
2054 | } | |
2055 | route++; | |
2056 | } | |
2057 | ||
2058 | return 0; | |
2059 | } | |
2060 | EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes); | |
2061 | ||
bf3a9e13 MB |
2062 | static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context *dapm, |
2063 | const struct snd_soc_dapm_route *route) | |
2064 | { | |
2065 | struct snd_soc_dapm_widget *source = dapm_find_widget(dapm, | |
2066 | route->source, | |
2067 | true); | |
2068 | struct snd_soc_dapm_widget *sink = dapm_find_widget(dapm, | |
2069 | route->sink, | |
2070 | true); | |
2071 | struct snd_soc_dapm_path *path; | |
2072 | int count = 0; | |
2073 | ||
2074 | if (!source) { | |
2075 | dev_err(dapm->dev, "Unable to find source %s for weak route\n", | |
2076 | route->source); | |
2077 | return -ENODEV; | |
2078 | } | |
2079 | ||
2080 | if (!sink) { | |
2081 | dev_err(dapm->dev, "Unable to find sink %s for weak route\n", | |
2082 | route->sink); | |
2083 | return -ENODEV; | |
2084 | } | |
2085 | ||
2086 | if (route->control || route->connected) | |
2087 | dev_warn(dapm->dev, "Ignoring control for weak route %s->%s\n", | |
2088 | route->source, route->sink); | |
2089 | ||
2090 | list_for_each_entry(path, &source->sinks, list_source) { | |
2091 | if (path->sink == sink) { | |
2092 | path->weak = 1; | |
2093 | count++; | |
2094 | } | |
2095 | } | |
2096 | ||
2097 | if (count == 0) | |
2098 | dev_err(dapm->dev, "No path found for weak route %s->%s\n", | |
2099 | route->source, route->sink); | |
2100 | if (count > 1) | |
2101 | dev_warn(dapm->dev, "%d paths found for weak route %s->%s\n", | |
2102 | count, route->source, route->sink); | |
2103 | ||
2104 | return 0; | |
2105 | } | |
2106 | ||
2107 | /** | |
2108 | * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak | |
2109 | * @dapm: DAPM context | |
2110 | * @route: audio routes | |
2111 | * @num: number of routes | |
2112 | * | |
2113 | * Mark existing routes matching those specified in the passed array | |
2114 | * as being weak, meaning that they are ignored for the purpose of | |
2115 | * power decisions. The main intended use case is for sidetone paths | |
2116 | * which couple audio between other independent paths if they are both | |
2117 | * active in order to make the combination work better at the user | |
2118 | * level but which aren't intended to be "used". | |
2119 | * | |
2120 | * Note that CODEC drivers should not use this as sidetone type paths | |
2121 | * can frequently also be used as bypass paths. | |
2122 | */ | |
2123 | int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context *dapm, | |
2124 | const struct snd_soc_dapm_route *route, int num) | |
2125 | { | |
2126 | int i, err; | |
2127 | int ret = 0; | |
2128 | ||
2129 | for (i = 0; i < num; i++) { | |
2130 | err = snd_soc_dapm_weak_route(dapm, route); | |
2131 | if (err) | |
2132 | ret = err; | |
2133 | route++; | |
2134 | } | |
2135 | ||
2136 | return ret; | |
2137 | } | |
2138 | EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes); | |
2139 | ||
2b97eabc RP |
2140 | /** |
2141 | * snd_soc_dapm_new_widgets - add new dapm widgets | |
ce6120cc | 2142 | * @dapm: DAPM context |
2b97eabc RP |
2143 | * |
2144 | * Checks the codec for any new dapm widgets and creates them if found. | |
2145 | * | |
2146 | * Returns 0 for success. | |
2147 | */ | |
ce6120cc | 2148 | int snd_soc_dapm_new_widgets(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
2149 | { |
2150 | struct snd_soc_dapm_widget *w; | |
b66a70d5 | 2151 | unsigned int val; |
2b97eabc | 2152 | |
97c866de | 2153 | list_for_each_entry(w, &dapm->card->widgets, list) |
2b97eabc RP |
2154 | { |
2155 | if (w->new) | |
2156 | continue; | |
2157 | ||
fad59888 SW |
2158 | if (w->num_kcontrols) { |
2159 | w->kcontrols = kzalloc(w->num_kcontrols * | |
2160 | sizeof(struct snd_kcontrol *), | |
2161 | GFP_KERNEL); | |
2162 | if (!w->kcontrols) | |
2163 | return -ENOMEM; | |
2164 | } | |
2165 | ||
2b97eabc RP |
2166 | switch(w->id) { |
2167 | case snd_soc_dapm_switch: | |
2168 | case snd_soc_dapm_mixer: | |
ca9c1aae | 2169 | case snd_soc_dapm_mixer_named_ctl: |
4b80b8c2 | 2170 | dapm_new_mixer(w); |
2b97eabc RP |
2171 | break; |
2172 | case snd_soc_dapm_mux: | |
24ff33ac | 2173 | case snd_soc_dapm_virt_mux: |
2e72f8e3 | 2174 | case snd_soc_dapm_value_mux: |
4b80b8c2 | 2175 | dapm_new_mux(w); |
2b97eabc | 2176 | break; |
2b97eabc | 2177 | case snd_soc_dapm_pga: |
d88429a6 | 2178 | case snd_soc_dapm_out_drv: |
4b80b8c2 | 2179 | dapm_new_pga(w); |
2b97eabc | 2180 | break; |
7ca3a18b | 2181 | default: |
2b97eabc RP |
2182 | break; |
2183 | } | |
b66a70d5 MB |
2184 | |
2185 | /* Read the initial power state from the device */ | |
2186 | if (w->reg >= 0) { | |
0445bdf4 | 2187 | val = soc_widget_read(w, w->reg); |
b66a70d5 MB |
2188 | val &= 1 << w->shift; |
2189 | if (w->invert) | |
2190 | val = !val; | |
2191 | ||
2192 | if (val) | |
2193 | w->power = 1; | |
2194 | } | |
2195 | ||
2b97eabc | 2196 | w->new = 1; |
d5d1e0be | 2197 | |
7508b12a | 2198 | dapm_mark_dirty(w, "new widget"); |
d5d1e0be | 2199 | dapm_debugfs_add_widget(w); |
2b97eabc RP |
2200 | } |
2201 | ||
ce6120cc | 2202 | dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc RP |
2203 | return 0; |
2204 | } | |
2205 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets); | |
2206 | ||
2207 | /** | |
2208 | * snd_soc_dapm_get_volsw - dapm mixer get callback | |
2209 | * @kcontrol: mixer control | |
ac11a2b3 | 2210 | * @ucontrol: control element information |
2b97eabc RP |
2211 | * |
2212 | * Callback to get the value of a dapm mixer control. | |
2213 | * | |
2214 | * Returns 0 for success. | |
2215 | */ | |
2216 | int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol, | |
2217 | struct snd_ctl_elem_value *ucontrol) | |
2218 | { | |
fafd2176 SW |
2219 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2220 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
4eaa9819 JS |
2221 | struct soc_mixer_control *mc = |
2222 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
2223 | unsigned int reg = mc->reg; |
2224 | unsigned int shift = mc->shift; | |
2225 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 2226 | int max = mc->max; |
815ecf8d JS |
2227 | unsigned int invert = mc->invert; |
2228 | unsigned int mask = (1 << fls(max)) - 1; | |
2b97eabc | 2229 | |
2b97eabc RP |
2230 | ucontrol->value.integer.value[0] = |
2231 | (snd_soc_read(widget->codec, reg) >> shift) & mask; | |
2232 | if (shift != rshift) | |
2233 | ucontrol->value.integer.value[1] = | |
2234 | (snd_soc_read(widget->codec, reg) >> rshift) & mask; | |
2235 | if (invert) { | |
2236 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 2237 | max - ucontrol->value.integer.value[0]; |
2b97eabc RP |
2238 | if (shift != rshift) |
2239 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 2240 | max - ucontrol->value.integer.value[1]; |
2b97eabc RP |
2241 | } |
2242 | ||
2243 | return 0; | |
2244 | } | |
2245 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw); | |
2246 | ||
2247 | /** | |
2248 | * snd_soc_dapm_put_volsw - dapm mixer set callback | |
2249 | * @kcontrol: mixer control | |
ac11a2b3 | 2250 | * @ucontrol: control element information |
2b97eabc RP |
2251 | * |
2252 | * Callback to set the value of a dapm mixer control. | |
2253 | * | |
2254 | * Returns 0 for success. | |
2255 | */ | |
2256 | int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, | |
2257 | struct snd_ctl_elem_value *ucontrol) | |
2258 | { | |
fafd2176 SW |
2259 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2260 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2261 | struct snd_soc_codec *codec = widget->codec; | |
4eaa9819 JS |
2262 | struct soc_mixer_control *mc = |
2263 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
2264 | unsigned int reg = mc->reg; |
2265 | unsigned int shift = mc->shift; | |
4eaa9819 | 2266 | int max = mc->max; |
815ecf8d JS |
2267 | unsigned int mask = (1 << fls(max)) - 1; |
2268 | unsigned int invert = mc->invert; | |
e9cf7049 | 2269 | unsigned int val; |
97404f2e MB |
2270 | int connect, change; |
2271 | struct snd_soc_dapm_update update; | |
fafd2176 | 2272 | int wi; |
2b97eabc RP |
2273 | |
2274 | val = (ucontrol->value.integer.value[0] & mask); | |
2275 | ||
2276 | if (invert) | |
a7a4ac86 | 2277 | val = max - val; |
e9cf7049 | 2278 | mask = mask << shift; |
2b97eabc | 2279 | val = val << shift; |
2b97eabc | 2280 | |
fafd2176 SW |
2281 | if (val) |
2282 | /* new connection */ | |
2283 | connect = invert ? 0 : 1; | |
2284 | else | |
2285 | /* old connection must be powered down */ | |
2286 | connect = invert ? 1 : 0; | |
2287 | ||
2288 | mutex_lock(&codec->mutex); | |
2b97eabc | 2289 | |
e9cf7049 | 2290 | change = snd_soc_test_bits(widget->codec, reg, mask, val); |
97404f2e | 2291 | if (change) { |
fafd2176 SW |
2292 | for (wi = 0; wi < wlist->num_widgets; wi++) { |
2293 | widget = wlist->widgets[wi]; | |
283375ce | 2294 | |
fafd2176 | 2295 | widget->value = val; |
97404f2e | 2296 | |
fafd2176 SW |
2297 | update.kcontrol = kcontrol; |
2298 | update.widget = widget; | |
2299 | update.reg = reg; | |
2300 | update.mask = mask; | |
2301 | update.val = val; | |
2302 | widget->dapm->update = &update; | |
97404f2e | 2303 | |
fafd2176 SW |
2304 | dapm_mixer_update_power(widget, kcontrol, connect); |
2305 | ||
2306 | widget->dapm->update = NULL; | |
2307 | } | |
283375ce MB |
2308 | } |
2309 | ||
fafd2176 | 2310 | mutex_unlock(&codec->mutex); |
97404f2e | 2311 | return 0; |
2b97eabc RP |
2312 | } |
2313 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw); | |
2314 | ||
2315 | /** | |
2316 | * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback | |
2317 | * @kcontrol: mixer control | |
ac11a2b3 | 2318 | * @ucontrol: control element information |
2b97eabc RP |
2319 | * |
2320 | * Callback to get the value of a dapm enumerated double mixer control. | |
2321 | * | |
2322 | * Returns 0 for success. | |
2323 | */ | |
2324 | int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol, | |
2325 | struct snd_ctl_elem_value *ucontrol) | |
2326 | { | |
fafd2176 SW |
2327 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2328 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2b97eabc | 2329 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f | 2330 | unsigned int val, bitmask; |
2b97eabc | 2331 | |
f8ba0b7b | 2332 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
2333 | ; |
2334 | val = snd_soc_read(widget->codec, e->reg); | |
2335 | ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1); | |
2336 | if (e->shift_l != e->shift_r) | |
2337 | ucontrol->value.enumerated.item[1] = | |
2338 | (val >> e->shift_r) & (bitmask - 1); | |
2339 | ||
2340 | return 0; | |
2341 | } | |
2342 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double); | |
2343 | ||
2344 | /** | |
2345 | * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback | |
2346 | * @kcontrol: mixer control | |
ac11a2b3 | 2347 | * @ucontrol: control element information |
2b97eabc RP |
2348 | * |
2349 | * Callback to set the value of a dapm enumerated double mixer control. | |
2350 | * | |
2351 | * Returns 0 for success. | |
2352 | */ | |
2353 | int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, | |
2354 | struct snd_ctl_elem_value *ucontrol) | |
2355 | { | |
fafd2176 SW |
2356 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2357 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2358 | struct snd_soc_codec *codec = widget->codec; | |
2b97eabc | 2359 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
3a65577d | 2360 | unsigned int val, mux, change; |
46f5822f | 2361 | unsigned int mask, bitmask; |
97404f2e | 2362 | struct snd_soc_dapm_update update; |
fafd2176 | 2363 | int wi; |
2b97eabc | 2364 | |
f8ba0b7b | 2365 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc | 2366 | ; |
f8ba0b7b | 2367 | if (ucontrol->value.enumerated.item[0] > e->max - 1) |
2b97eabc RP |
2368 | return -EINVAL; |
2369 | mux = ucontrol->value.enumerated.item[0]; | |
2370 | val = mux << e->shift_l; | |
2371 | mask = (bitmask - 1) << e->shift_l; | |
2372 | if (e->shift_l != e->shift_r) { | |
f8ba0b7b | 2373 | if (ucontrol->value.enumerated.item[1] > e->max - 1) |
2b97eabc RP |
2374 | return -EINVAL; |
2375 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
2376 | mask |= (bitmask - 1) << e->shift_r; | |
2377 | } | |
2378 | ||
fafd2176 SW |
2379 | mutex_lock(&codec->mutex); |
2380 | ||
3a65577d | 2381 | change = snd_soc_test_bits(widget->codec, e->reg, mask, val); |
fafd2176 SW |
2382 | if (change) { |
2383 | for (wi = 0; wi < wlist->num_widgets; wi++) { | |
2384 | widget = wlist->widgets[wi]; | |
2385 | ||
2386 | widget->value = val; | |
1642e3d4 | 2387 | |
fafd2176 SW |
2388 | update.kcontrol = kcontrol; |
2389 | update.widget = widget; | |
2390 | update.reg = e->reg; | |
2391 | update.mask = mask; | |
2392 | update.val = val; | |
2393 | widget->dapm->update = &update; | |
1642e3d4 | 2394 | |
fafd2176 | 2395 | dapm_mux_update_power(widget, kcontrol, change, mux, e); |
1642e3d4 | 2396 | |
fafd2176 SW |
2397 | widget->dapm->update = NULL; |
2398 | } | |
2399 | } | |
2b97eabc | 2400 | |
fafd2176 | 2401 | mutex_unlock(&codec->mutex); |
97404f2e | 2402 | return change; |
2b97eabc RP |
2403 | } |
2404 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double); | |
2405 | ||
d2b247a8 MB |
2406 | /** |
2407 | * snd_soc_dapm_get_enum_virt - Get virtual DAPM mux | |
2408 | * @kcontrol: mixer control | |
2409 | * @ucontrol: control element information | |
2410 | * | |
2411 | * Returns 0 for success. | |
2412 | */ | |
2413 | int snd_soc_dapm_get_enum_virt(struct snd_kcontrol *kcontrol, | |
2414 | struct snd_ctl_elem_value *ucontrol) | |
2415 | { | |
fafd2176 SW |
2416 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2417 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
d2b247a8 MB |
2418 | |
2419 | ucontrol->value.enumerated.item[0] = widget->value; | |
2420 | ||
2421 | return 0; | |
2422 | } | |
2423 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_virt); | |
2424 | ||
2425 | /** | |
2426 | * snd_soc_dapm_put_enum_virt - Set virtual DAPM mux | |
2427 | * @kcontrol: mixer control | |
2428 | * @ucontrol: control element information | |
2429 | * | |
2430 | * Returns 0 for success. | |
2431 | */ | |
2432 | int snd_soc_dapm_put_enum_virt(struct snd_kcontrol *kcontrol, | |
2433 | struct snd_ctl_elem_value *ucontrol) | |
2434 | { | |
fafd2176 SW |
2435 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2436 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2437 | struct snd_soc_codec *codec = widget->codec; | |
d2b247a8 MB |
2438 | struct soc_enum *e = |
2439 | (struct soc_enum *)kcontrol->private_value; | |
2440 | int change; | |
2441 | int ret = 0; | |
fafd2176 | 2442 | int wi; |
d2b247a8 MB |
2443 | |
2444 | if (ucontrol->value.enumerated.item[0] >= e->max) | |
2445 | return -EINVAL; | |
2446 | ||
fafd2176 | 2447 | mutex_lock(&codec->mutex); |
d2b247a8 MB |
2448 | |
2449 | change = widget->value != ucontrol->value.enumerated.item[0]; | |
fafd2176 SW |
2450 | if (change) { |
2451 | for (wi = 0; wi < wlist->num_widgets; wi++) { | |
2452 | widget = wlist->widgets[wi]; | |
2453 | ||
2454 | widget->value = ucontrol->value.enumerated.item[0]; | |
2455 | ||
2456 | dapm_mux_update_power(widget, kcontrol, change, | |
2457 | widget->value, e); | |
2458 | } | |
2459 | } | |
d2b247a8 | 2460 | |
fafd2176 | 2461 | mutex_unlock(&codec->mutex); |
d2b247a8 MB |
2462 | return ret; |
2463 | } | |
2464 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt); | |
2465 | ||
2e72f8e3 PU |
2466 | /** |
2467 | * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get | |
2468 | * callback | |
2469 | * @kcontrol: mixer control | |
2470 | * @ucontrol: control element information | |
2471 | * | |
2472 | * Callback to get the value of a dapm semi enumerated double mixer control. | |
2473 | * | |
2474 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
2475 | * used for handling bitfield coded enumeration for example. | |
2476 | * | |
2477 | * Returns 0 for success. | |
2478 | */ | |
2479 | int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol *kcontrol, | |
2480 | struct snd_ctl_elem_value *ucontrol) | |
2481 | { | |
fafd2176 SW |
2482 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2483 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
74155556 | 2484 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f | 2485 | unsigned int reg_val, val, mux; |
2e72f8e3 PU |
2486 | |
2487 | reg_val = snd_soc_read(widget->codec, e->reg); | |
2488 | val = (reg_val >> e->shift_l) & e->mask; | |
2489 | for (mux = 0; mux < e->max; mux++) { | |
2490 | if (val == e->values[mux]) | |
2491 | break; | |
2492 | } | |
2493 | ucontrol->value.enumerated.item[0] = mux; | |
2494 | if (e->shift_l != e->shift_r) { | |
2495 | val = (reg_val >> e->shift_r) & e->mask; | |
2496 | for (mux = 0; mux < e->max; mux++) { | |
2497 | if (val == e->values[mux]) | |
2498 | break; | |
2499 | } | |
2500 | ucontrol->value.enumerated.item[1] = mux; | |
2501 | } | |
2502 | ||
2503 | return 0; | |
2504 | } | |
2505 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double); | |
2506 | ||
2507 | /** | |
2508 | * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set | |
2509 | * callback | |
2510 | * @kcontrol: mixer control | |
2511 | * @ucontrol: control element information | |
2512 | * | |
2513 | * Callback to set the value of a dapm semi enumerated double mixer control. | |
2514 | * | |
2515 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
2516 | * used for handling bitfield coded enumeration for example. | |
2517 | * | |
2518 | * Returns 0 for success. | |
2519 | */ | |
2520 | int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol, | |
2521 | struct snd_ctl_elem_value *ucontrol) | |
2522 | { | |
fafd2176 SW |
2523 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2524 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2525 | struct snd_soc_codec *codec = widget->codec; | |
74155556 | 2526 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
3a65577d | 2527 | unsigned int val, mux, change; |
46f5822f | 2528 | unsigned int mask; |
97404f2e | 2529 | struct snd_soc_dapm_update update; |
fafd2176 | 2530 | int wi; |
2e72f8e3 PU |
2531 | |
2532 | if (ucontrol->value.enumerated.item[0] > e->max - 1) | |
2533 | return -EINVAL; | |
2534 | mux = ucontrol->value.enumerated.item[0]; | |
2535 | val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l; | |
2536 | mask = e->mask << e->shift_l; | |
2537 | if (e->shift_l != e->shift_r) { | |
2538 | if (ucontrol->value.enumerated.item[1] > e->max - 1) | |
2539 | return -EINVAL; | |
2540 | val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r; | |
2541 | mask |= e->mask << e->shift_r; | |
2542 | } | |
2543 | ||
fafd2176 SW |
2544 | mutex_lock(&codec->mutex); |
2545 | ||
3a65577d | 2546 | change = snd_soc_test_bits(widget->codec, e->reg, mask, val); |
fafd2176 SW |
2547 | if (change) { |
2548 | for (wi = 0; wi < wlist->num_widgets; wi++) { | |
2549 | widget = wlist->widgets[wi]; | |
1642e3d4 | 2550 | |
fafd2176 | 2551 | widget->value = val; |
1642e3d4 | 2552 | |
fafd2176 SW |
2553 | update.kcontrol = kcontrol; |
2554 | update.widget = widget; | |
2555 | update.reg = e->reg; | |
2556 | update.mask = mask; | |
2557 | update.val = val; | |
2558 | widget->dapm->update = &update; | |
1642e3d4 | 2559 | |
fafd2176 SW |
2560 | dapm_mux_update_power(widget, kcontrol, change, mux, e); |
2561 | ||
2562 | widget->dapm->update = NULL; | |
2563 | } | |
2564 | } | |
2e72f8e3 | 2565 | |
fafd2176 | 2566 | mutex_unlock(&codec->mutex); |
97404f2e | 2567 | return change; |
2e72f8e3 PU |
2568 | } |
2569 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double); | |
2570 | ||
8b37dbd2 MB |
2571 | /** |
2572 | * snd_soc_dapm_info_pin_switch - Info for a pin switch | |
2573 | * | |
2574 | * @kcontrol: mixer control | |
2575 | * @uinfo: control element information | |
2576 | * | |
2577 | * Callback to provide information about a pin switch control. | |
2578 | */ | |
2579 | int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol, | |
2580 | struct snd_ctl_elem_info *uinfo) | |
2581 | { | |
2582 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
2583 | uinfo->count = 1; | |
2584 | uinfo->value.integer.min = 0; | |
2585 | uinfo->value.integer.max = 1; | |
2586 | ||
2587 | return 0; | |
2588 | } | |
2589 | EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch); | |
2590 | ||
2591 | /** | |
2592 | * snd_soc_dapm_get_pin_switch - Get information for a pin switch | |
2593 | * | |
2594 | * @kcontrol: mixer control | |
2595 | * @ucontrol: Value | |
2596 | */ | |
2597 | int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol, | |
2598 | struct snd_ctl_elem_value *ucontrol) | |
2599 | { | |
2600 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
2601 | const char *pin = (const char *)kcontrol->private_value; | |
2602 | ||
2603 | mutex_lock(&codec->mutex); | |
2604 | ||
2605 | ucontrol->value.integer.value[0] = | |
ce6120cc | 2606 | snd_soc_dapm_get_pin_status(&codec->dapm, pin); |
8b37dbd2 MB |
2607 | |
2608 | mutex_unlock(&codec->mutex); | |
2609 | ||
2610 | return 0; | |
2611 | } | |
2612 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch); | |
2613 | ||
2614 | /** | |
2615 | * snd_soc_dapm_put_pin_switch - Set information for a pin switch | |
2616 | * | |
2617 | * @kcontrol: mixer control | |
2618 | * @ucontrol: Value | |
2619 | */ | |
2620 | int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol, | |
2621 | struct snd_ctl_elem_value *ucontrol) | |
2622 | { | |
2623 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
2624 | const char *pin = (const char *)kcontrol->private_value; | |
2625 | ||
2626 | mutex_lock(&codec->mutex); | |
2627 | ||
2628 | if (ucontrol->value.integer.value[0]) | |
ce6120cc | 2629 | snd_soc_dapm_enable_pin(&codec->dapm, pin); |
8b37dbd2 | 2630 | else |
ce6120cc | 2631 | snd_soc_dapm_disable_pin(&codec->dapm, pin); |
8b37dbd2 | 2632 | |
ce6120cc | 2633 | snd_soc_dapm_sync(&codec->dapm); |
8b37dbd2 MB |
2634 | |
2635 | mutex_unlock(&codec->mutex); | |
2636 | ||
2637 | return 0; | |
2638 | } | |
2639 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch); | |
2640 | ||
2b97eabc RP |
2641 | /** |
2642 | * snd_soc_dapm_new_control - create new dapm control | |
ce6120cc | 2643 | * @dapm: DAPM context |
2b97eabc RP |
2644 | * @widget: widget template |
2645 | * | |
2646 | * Creates a new dapm control based upon the template. | |
2647 | * | |
2648 | * Returns 0 for success else error. | |
2649 | */ | |
ce6120cc | 2650 | int snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
2651 | const struct snd_soc_dapm_widget *widget) |
2652 | { | |
2653 | struct snd_soc_dapm_widget *w; | |
ead9b919 | 2654 | size_t name_len; |
2b97eabc RP |
2655 | |
2656 | if ((w = dapm_cnew_widget(widget)) == NULL) | |
2657 | return -ENOMEM; | |
2658 | ||
ead9b919 | 2659 | name_len = strlen(widget->name) + 1; |
88e8b9a8 | 2660 | if (dapm->codec && dapm->codec->name_prefix) |
ead9b919 JN |
2661 | name_len += 1 + strlen(dapm->codec->name_prefix); |
2662 | w->name = kmalloc(name_len, GFP_KERNEL); | |
2663 | if (w->name == NULL) { | |
2664 | kfree(w); | |
2665 | return -ENOMEM; | |
2666 | } | |
88e8b9a8 | 2667 | if (dapm->codec && dapm->codec->name_prefix) |
ead9b919 JN |
2668 | snprintf(w->name, name_len, "%s %s", |
2669 | dapm->codec->name_prefix, widget->name); | |
2670 | else | |
2671 | snprintf(w->name, name_len, "%s", widget->name); | |
2672 | ||
7ca3a18b MB |
2673 | switch (w->id) { |
2674 | case snd_soc_dapm_switch: | |
2675 | case snd_soc_dapm_mixer: | |
2676 | case snd_soc_dapm_mixer_named_ctl: | |
2677 | w->power_check = dapm_generic_check_power; | |
2678 | break; | |
2679 | case snd_soc_dapm_mux: | |
2680 | case snd_soc_dapm_virt_mux: | |
2681 | case snd_soc_dapm_value_mux: | |
2682 | w->power_check = dapm_generic_check_power; | |
2683 | break; | |
2684 | case snd_soc_dapm_adc: | |
2685 | case snd_soc_dapm_aif_out: | |
2686 | w->power_check = dapm_adc_check_power; | |
2687 | break; | |
2688 | case snd_soc_dapm_dac: | |
2689 | case snd_soc_dapm_aif_in: | |
2690 | w->power_check = dapm_dac_check_power; | |
2691 | break; | |
2692 | case snd_soc_dapm_pga: | |
2693 | case snd_soc_dapm_out_drv: | |
2694 | case snd_soc_dapm_input: | |
2695 | case snd_soc_dapm_output: | |
2696 | case snd_soc_dapm_micbias: | |
2697 | case snd_soc_dapm_spk: | |
2698 | case snd_soc_dapm_hp: | |
2699 | case snd_soc_dapm_mic: | |
2700 | case snd_soc_dapm_line: | |
2701 | w->power_check = dapm_generic_check_power; | |
2702 | break; | |
2703 | case snd_soc_dapm_supply: | |
2704 | w->power_check = dapm_supply_check_power; | |
2705 | break; | |
2706 | default: | |
2707 | w->power_check = dapm_always_on_check_power; | |
2708 | break; | |
2709 | } | |
2710 | ||
97c866de | 2711 | dapm->n_widgets++; |
ce6120cc LG |
2712 | w->dapm = dapm; |
2713 | w->codec = dapm->codec; | |
b7950641 | 2714 | w->platform = dapm->platform; |
2b97eabc RP |
2715 | INIT_LIST_HEAD(&w->sources); |
2716 | INIT_LIST_HEAD(&w->sinks); | |
2717 | INIT_LIST_HEAD(&w->list); | |
db432b41 | 2718 | INIT_LIST_HEAD(&w->dirty); |
97c866de | 2719 | list_add(&w->list, &dapm->card->widgets); |
2b97eabc RP |
2720 | |
2721 | /* machine layer set ups unconnected pins and insertions */ | |
2722 | w->connected = 1; | |
2723 | return 0; | |
2724 | } | |
2725 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control); | |
2726 | ||
4ba1327a MB |
2727 | /** |
2728 | * snd_soc_dapm_new_controls - create new dapm controls | |
ce6120cc | 2729 | * @dapm: DAPM context |
4ba1327a MB |
2730 | * @widget: widget array |
2731 | * @num: number of widgets | |
2732 | * | |
2733 | * Creates new DAPM controls based upon the templates. | |
2734 | * | |
2735 | * Returns 0 for success else error. | |
2736 | */ | |
ce6120cc | 2737 | int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm, |
4ba1327a MB |
2738 | const struct snd_soc_dapm_widget *widget, |
2739 | int num) | |
2740 | { | |
2741 | int i, ret; | |
2742 | ||
2743 | for (i = 0; i < num; i++) { | |
ce6120cc | 2744 | ret = snd_soc_dapm_new_control(dapm, widget); |
b8b33cb5 | 2745 | if (ret < 0) { |
f7d41ae8 JN |
2746 | dev_err(dapm->dev, |
2747 | "ASoC: Failed to create DAPM control %s: %d\n", | |
2748 | widget->name, ret); | |
4ba1327a | 2749 | return ret; |
b8b33cb5 | 2750 | } |
4ba1327a MB |
2751 | widget++; |
2752 | } | |
2753 | return 0; | |
2754 | } | |
2755 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls); | |
2756 | ||
ce6120cc | 2757 | static void soc_dapm_stream_event(struct snd_soc_dapm_context *dapm, |
f0fba2ad | 2758 | const char *stream, int event) |
2b97eabc RP |
2759 | { |
2760 | struct snd_soc_dapm_widget *w; | |
2761 | ||
97c866de | 2762 | list_for_each_entry(w, &dapm->card->widgets, list) |
2b97eabc | 2763 | { |
97c866de | 2764 | if (!w->sname || w->dapm != dapm) |
2b97eabc | 2765 | continue; |
ee47b364 | 2766 | dev_vdbg(w->dapm->dev, "widget %s\n %s stream %s event %d\n", |
f7d41ae8 | 2767 | w->name, w->sname, stream, event); |
2b97eabc | 2768 | if (strstr(w->sname, stream)) { |
75c1f891 | 2769 | dapm_mark_dirty(w, "stream event"); |
2b97eabc RP |
2770 | switch(event) { |
2771 | case SND_SOC_DAPM_STREAM_START: | |
2772 | w->active = 1; | |
2773 | break; | |
2774 | case SND_SOC_DAPM_STREAM_STOP: | |
2775 | w->active = 0; | |
2776 | break; | |
2777 | case SND_SOC_DAPM_STREAM_SUSPEND: | |
2b97eabc | 2778 | case SND_SOC_DAPM_STREAM_RESUME: |
2b97eabc | 2779 | case SND_SOC_DAPM_STREAM_PAUSE_PUSH: |
2b97eabc RP |
2780 | case SND_SOC_DAPM_STREAM_PAUSE_RELEASE: |
2781 | break; | |
2782 | } | |
2783 | } | |
2784 | } | |
2b97eabc | 2785 | |
ce6120cc | 2786 | dapm_power_widgets(dapm, event); |
64a648c2 LG |
2787 | |
2788 | /* do we need to notify any clients that DAPM stream is complete */ | |
2789 | if (dapm->stream_event) | |
2790 | dapm->stream_event(dapm, event); | |
ce6120cc LG |
2791 | } |
2792 | ||
2793 | /** | |
2794 | * snd_soc_dapm_stream_event - send a stream event to the dapm core | |
2795 | * @rtd: PCM runtime data | |
2796 | * @stream: stream name | |
2797 | * @event: stream event | |
2798 | * | |
2799 | * Sends a stream event to the dapm core. The core then makes any | |
2800 | * necessary widget power changes. | |
2801 | * | |
2802 | * Returns 0 for success else error. | |
2803 | */ | |
2804 | int snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, | |
2805 | const char *stream, int event) | |
2806 | { | |
2807 | struct snd_soc_codec *codec = rtd->codec; | |
2808 | ||
2809 | if (stream == NULL) | |
2810 | return 0; | |
2811 | ||
2812 | mutex_lock(&codec->mutex); | |
2813 | soc_dapm_stream_event(&codec->dapm, stream, event); | |
8e8b2d67 | 2814 | mutex_unlock(&codec->mutex); |
2b97eabc RP |
2815 | return 0; |
2816 | } | |
2b97eabc RP |
2817 | |
2818 | /** | |
a5302181 | 2819 | * snd_soc_dapm_enable_pin - enable pin. |
ce6120cc | 2820 | * @dapm: DAPM context |
a5302181 | 2821 | * @pin: pin name |
2b97eabc | 2822 | * |
74b8f955 | 2823 | * Enables input/output pin and its parents or children widgets iff there is |
a5302181 LG |
2824 | * a valid audio route and active audio stream. |
2825 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2826 | * do any widget power switching. | |
2b97eabc | 2827 | */ |
ce6120cc | 2828 | int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin) |
2b97eabc | 2829 | { |
ce6120cc | 2830 | return snd_soc_dapm_set_pin(dapm, pin, 1); |
a5302181 LG |
2831 | } |
2832 | EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin); | |
2b97eabc | 2833 | |
da34183e MB |
2834 | /** |
2835 | * snd_soc_dapm_force_enable_pin - force a pin to be enabled | |
ce6120cc | 2836 | * @dapm: DAPM context |
da34183e MB |
2837 | * @pin: pin name |
2838 | * | |
2839 | * Enables input/output pin regardless of any other state. This is | |
2840 | * intended for use with microphone bias supplies used in microphone | |
2841 | * jack detection. | |
2842 | * | |
2843 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2844 | * do any widget power switching. | |
2845 | */ | |
ce6120cc LG |
2846 | int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm, |
2847 | const char *pin) | |
da34183e | 2848 | { |
91a5fca4 | 2849 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); |
da34183e | 2850 | |
91a5fca4 LPC |
2851 | if (!w) { |
2852 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); | |
2853 | return -EINVAL; | |
0d86733c MB |
2854 | } |
2855 | ||
91a5fca4 LPC |
2856 | dev_dbg(w->dapm->dev, "dapm: force enable pin %s\n", pin); |
2857 | w->connected = 1; | |
2858 | w->force = 1; | |
75c1f891 | 2859 | dapm_mark_dirty(w, "force enable"); |
da34183e | 2860 | |
91a5fca4 | 2861 | return 0; |
da34183e MB |
2862 | } |
2863 | EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin); | |
2864 | ||
a5302181 LG |
2865 | /** |
2866 | * snd_soc_dapm_disable_pin - disable pin. | |
ce6120cc | 2867 | * @dapm: DAPM context |
a5302181 LG |
2868 | * @pin: pin name |
2869 | * | |
74b8f955 | 2870 | * Disables input/output pin and its parents or children widgets. |
a5302181 LG |
2871 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to |
2872 | * do any widget power switching. | |
2873 | */ | |
ce6120cc LG |
2874 | int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm, |
2875 | const char *pin) | |
a5302181 | 2876 | { |
ce6120cc | 2877 | return snd_soc_dapm_set_pin(dapm, pin, 0); |
2b97eabc | 2878 | } |
a5302181 | 2879 | EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin); |
2b97eabc | 2880 | |
5817b52a MB |
2881 | /** |
2882 | * snd_soc_dapm_nc_pin - permanently disable pin. | |
ce6120cc | 2883 | * @dapm: DAPM context |
5817b52a MB |
2884 | * @pin: pin name |
2885 | * | |
2886 | * Marks the specified pin as being not connected, disabling it along | |
2887 | * any parent or child widgets. At present this is identical to | |
2888 | * snd_soc_dapm_disable_pin() but in future it will be extended to do | |
2889 | * additional things such as disabling controls which only affect | |
2890 | * paths through the pin. | |
2891 | * | |
2892 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2893 | * do any widget power switching. | |
2894 | */ | |
ce6120cc | 2895 | int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin) |
5817b52a | 2896 | { |
ce6120cc | 2897 | return snd_soc_dapm_set_pin(dapm, pin, 0); |
5817b52a MB |
2898 | } |
2899 | EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin); | |
2900 | ||
eeec12bf | 2901 | /** |
a5302181 | 2902 | * snd_soc_dapm_get_pin_status - get audio pin status |
ce6120cc | 2903 | * @dapm: DAPM context |
a5302181 | 2904 | * @pin: audio signal pin endpoint (or start point) |
eeec12bf | 2905 | * |
a5302181 | 2906 | * Get audio pin status - connected or disconnected. |
eeec12bf | 2907 | * |
a5302181 | 2908 | * Returns 1 for connected otherwise 0. |
eeec12bf | 2909 | */ |
ce6120cc LG |
2910 | int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm, |
2911 | const char *pin) | |
eeec12bf | 2912 | { |
91a5fca4 | 2913 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); |
eeec12bf | 2914 | |
91a5fca4 LPC |
2915 | if (w) |
2916 | return w->connected; | |
a68b38ad | 2917 | |
eeec12bf GG |
2918 | return 0; |
2919 | } | |
a5302181 | 2920 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status); |
eeec12bf | 2921 | |
1547aba9 MB |
2922 | /** |
2923 | * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint | |
ce6120cc | 2924 | * @dapm: DAPM context |
1547aba9 MB |
2925 | * @pin: audio signal pin endpoint (or start point) |
2926 | * | |
2927 | * Mark the given endpoint or pin as ignoring suspend. When the | |
2928 | * system is disabled a path between two endpoints flagged as ignoring | |
2929 | * suspend will not be disabled. The path must already be enabled via | |
2930 | * normal means at suspend time, it will not be turned on if it was not | |
2931 | * already enabled. | |
2932 | */ | |
ce6120cc LG |
2933 | int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm, |
2934 | const char *pin) | |
1547aba9 | 2935 | { |
91a5fca4 | 2936 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, false); |
1547aba9 | 2937 | |
91a5fca4 LPC |
2938 | if (!w) { |
2939 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); | |
2940 | return -EINVAL; | |
1547aba9 MB |
2941 | } |
2942 | ||
91a5fca4 LPC |
2943 | w->ignore_suspend = 1; |
2944 | ||
2945 | return 0; | |
1547aba9 MB |
2946 | } |
2947 | EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend); | |
2948 | ||
2b97eabc RP |
2949 | /** |
2950 | * snd_soc_dapm_free - free dapm resources | |
728a5222 | 2951 | * @dapm: DAPM context |
2b97eabc RP |
2952 | * |
2953 | * Free all dapm widgets and resources. | |
2954 | */ | |
ce6120cc | 2955 | void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm) |
2b97eabc | 2956 | { |
ce6120cc | 2957 | snd_soc_dapm_sys_remove(dapm->dev); |
6c45e126 | 2958 | dapm_debugfs_cleanup(dapm); |
ce6120cc | 2959 | dapm_free_widgets(dapm); |
7be31be8 | 2960 | list_del(&dapm->list); |
2b97eabc RP |
2961 | } |
2962 | EXPORT_SYMBOL_GPL(snd_soc_dapm_free); | |
2963 | ||
ce6120cc | 2964 | static void soc_dapm_shutdown_codec(struct snd_soc_dapm_context *dapm) |
51737470 | 2965 | { |
51737470 MB |
2966 | struct snd_soc_dapm_widget *w; |
2967 | LIST_HEAD(down_list); | |
2968 | int powerdown = 0; | |
2969 | ||
97c866de JN |
2970 | list_for_each_entry(w, &dapm->card->widgets, list) { |
2971 | if (w->dapm != dapm) | |
2972 | continue; | |
51737470 | 2973 | if (w->power) { |
828a842f | 2974 | dapm_seq_insert(w, &down_list, false); |
c2caa4da | 2975 | w->power = 0; |
51737470 MB |
2976 | powerdown = 1; |
2977 | } | |
2978 | } | |
2979 | ||
2980 | /* If there were no widgets to power down we're already in | |
2981 | * standby. | |
2982 | */ | |
2983 | if (powerdown) { | |
ed5a4c47 | 2984 | snd_soc_dapm_set_bias_level(dapm, SND_SOC_BIAS_PREPARE); |
828a842f | 2985 | dapm_seq_run(dapm, &down_list, 0, false); |
ed5a4c47 | 2986 | snd_soc_dapm_set_bias_level(dapm, SND_SOC_BIAS_STANDBY); |
51737470 | 2987 | } |
f0fba2ad LG |
2988 | } |
2989 | ||
2990 | /* | |
2991 | * snd_soc_dapm_shutdown - callback for system shutdown | |
2992 | */ | |
2993 | void snd_soc_dapm_shutdown(struct snd_soc_card *card) | |
2994 | { | |
2995 | struct snd_soc_codec *codec; | |
2996 | ||
ce6120cc LG |
2997 | list_for_each_entry(codec, &card->codec_dev_list, list) { |
2998 | soc_dapm_shutdown_codec(&codec->dapm); | |
ed5a4c47 | 2999 | snd_soc_dapm_set_bias_level(&codec->dapm, SND_SOC_BIAS_OFF); |
ce6120cc | 3000 | } |
51737470 MB |
3001 | } |
3002 | ||
2b97eabc | 3003 | /* Module information */ |
d331124d | 3004 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
2b97eabc RP |
3005 | MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC"); |
3006 | MODULE_LICENSE("GPL"); |