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Commit | Line | Data |
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2b97eabc RP |
1 | /* |
2 | * soc-dapm.c -- ALSA SoC Dynamic Audio Power Management | |
3 | * | |
4 | * Copyright 2005 Wolfson Microelectronics PLC. | |
d331124d | 5 | * Author: Liam Girdwood <lrg@slimlogic.co.uk> |
2b97eabc RP |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2 of the License, or (at your | |
10 | * option) any later version. | |
11 | * | |
2b97eabc RP |
12 | * Features: |
13 | * o Changes power status of internal codec blocks depending on the | |
14 | * dynamic configuration of codec internal audio paths and active | |
74b8f955 | 15 | * DACs/ADCs. |
2b97eabc RP |
16 | * o Platform power domain - can support external components i.e. amps and |
17 | * mic/meadphone insertion events. | |
18 | * o Automatic Mic Bias support | |
19 | * o Jack insertion power event initiation - e.g. hp insertion will enable | |
20 | * sinks, dacs, etc | |
3a4fa0a2 | 21 | * o Delayed powerdown of audio susbsystem to reduce pops between a quick |
2b97eabc RP |
22 | * device reopen. |
23 | * | |
24 | * Todo: | |
25 | * o DAPM power change sequencing - allow for configurable per | |
26 | * codec sequences. | |
27 | * o Support for analogue bias optimisation. | |
28 | * o Support for reduced codec oversampling rates. | |
29 | * o Support for reduced codec bias currents. | |
30 | */ | |
31 | ||
32 | #include <linux/module.h> | |
33 | #include <linux/moduleparam.h> | |
34 | #include <linux/init.h> | |
9d0624a7 | 35 | #include <linux/async.h> |
2b97eabc RP |
36 | #include <linux/delay.h> |
37 | #include <linux/pm.h> | |
38 | #include <linux/bitops.h> | |
39 | #include <linux/platform_device.h> | |
40 | #include <linux/jiffies.h> | |
20496ff3 | 41 | #include <linux/debugfs.h> |
5a0e3ad6 | 42 | #include <linux/slab.h> |
2b97eabc RP |
43 | #include <sound/core.h> |
44 | #include <sound/pcm.h> | |
45 | #include <sound/pcm_params.h> | |
ce6120cc | 46 | #include <sound/soc.h> |
2b97eabc RP |
47 | #include <sound/initval.h> |
48 | ||
84e90930 MB |
49 | #include <trace/events/asoc.h> |
50 | ||
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 | ||
25c77c5f | 127 | 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 | 134 | } |
25c77c5f | 135 | EXPORT_SYMBOL_GPL(dapm_mark_dirty); |
db432b41 | 136 | |
2b97eabc | 137 | /* create a new dapm widget */ |
88cb4290 | 138 | static inline struct snd_soc_dapm_widget *dapm_cnew_widget( |
2b97eabc RP |
139 | const struct snd_soc_dapm_widget *_widget) |
140 | { | |
88cb4290 | 141 | return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL); |
2b97eabc RP |
142 | } |
143 | ||
4805608a LG |
144 | /* get snd_card from DAPM context */ |
145 | static inline struct snd_card *dapm_get_snd_card( | |
146 | struct snd_soc_dapm_context *dapm) | |
147 | { | |
148 | if (dapm->codec) | |
149 | return dapm->codec->card->snd_card; | |
150 | else if (dapm->platform) | |
151 | return dapm->platform->card->snd_card; | |
152 | else | |
153 | BUG(); | |
154 | ||
155 | /* unreachable */ | |
156 | return NULL; | |
157 | } | |
158 | ||
159 | /* get soc_card from DAPM context */ | |
160 | static inline struct snd_soc_card *dapm_get_soc_card( | |
161 | struct snd_soc_dapm_context *dapm) | |
162 | { | |
163 | if (dapm->codec) | |
164 | return dapm->codec->card; | |
165 | else if (dapm->platform) | |
166 | return dapm->platform->card; | |
167 | else | |
168 | BUG(); | |
169 | ||
170 | /* unreachable */ | |
171 | return NULL; | |
172 | } | |
173 | ||
0445bdf4 LG |
174 | static int soc_widget_read(struct snd_soc_dapm_widget *w, int reg) |
175 | { | |
176 | if (w->codec) | |
177 | return snd_soc_read(w->codec, reg); | |
b7950641 LG |
178 | else if (w->platform) |
179 | return snd_soc_platform_read(w->platform, reg); | |
180 | ||
181 | dev_err(w->dapm->dev, "no valid widget read method\n"); | |
182 | return -1; | |
0445bdf4 LG |
183 | } |
184 | ||
185 | static int soc_widget_write(struct snd_soc_dapm_widget *w, int reg, int val) | |
186 | { | |
187 | if (w->codec) | |
188 | return snd_soc_write(w->codec, reg, val); | |
b7950641 LG |
189 | else if (w->platform) |
190 | return snd_soc_platform_write(w->platform, reg, val); | |
191 | ||
192 | dev_err(w->dapm->dev, "no valid widget write method\n"); | |
193 | return -1; | |
0445bdf4 LG |
194 | } |
195 | ||
196 | static int soc_widget_update_bits(struct snd_soc_dapm_widget *w, | |
197 | unsigned short reg, unsigned int mask, unsigned int value) | |
198 | { | |
199 | int change; | |
200 | unsigned int old, new; | |
201 | int ret; | |
202 | ||
203 | ret = soc_widget_read(w, reg); | |
204 | if (ret < 0) | |
205 | return ret; | |
206 | ||
207 | old = ret; | |
208 | new = (old & ~mask) | (value & mask); | |
209 | change = old != new; | |
210 | if (change) { | |
211 | ret = soc_widget_write(w, reg, new); | |
212 | if (ret < 0) | |
213 | return ret; | |
214 | } | |
215 | ||
216 | return change; | |
217 | } | |
218 | ||
452c5eaa MB |
219 | /** |
220 | * snd_soc_dapm_set_bias_level - set the bias level for the system | |
ed5a4c47 | 221 | * @dapm: DAPM context |
452c5eaa MB |
222 | * @level: level to configure |
223 | * | |
224 | * Configure the bias (power) levels for the SoC audio device. | |
225 | * | |
226 | * Returns 0 for success else error. | |
227 | */ | |
ed5a4c47 | 228 | static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm, |
ce6120cc | 229 | enum snd_soc_bias_level level) |
452c5eaa | 230 | { |
ed5a4c47 | 231 | struct snd_soc_card *card = dapm->card; |
452c5eaa MB |
232 | int ret = 0; |
233 | ||
84e90930 MB |
234 | trace_snd_soc_bias_level_start(card, level); |
235 | ||
f0fba2ad | 236 | if (card && card->set_bias_level) |
d4c6005f | 237 | ret = card->set_bias_level(card, dapm, level); |
171ec6b0 MB |
238 | if (ret != 0) |
239 | goto out; | |
240 | ||
cc4c670a MB |
241 | if (dapm->codec) { |
242 | if (dapm->codec->driver->set_bias_level) | |
243 | ret = dapm->codec->driver->set_bias_level(dapm->codec, | |
244 | level); | |
245 | else | |
246 | dapm->bias_level = level; | |
247 | } | |
171ec6b0 MB |
248 | if (ret != 0) |
249 | goto out; | |
250 | ||
251 | if (card && card->set_bias_level_post) | |
d4c6005f | 252 | ret = card->set_bias_level_post(card, dapm, level); |
171ec6b0 | 253 | out: |
84e90930 MB |
254 | trace_snd_soc_bias_level_done(card, level); |
255 | ||
452c5eaa MB |
256 | return ret; |
257 | } | |
258 | ||
2b97eabc RP |
259 | /* set up initial codec paths */ |
260 | static void dapm_set_path_status(struct snd_soc_dapm_widget *w, | |
261 | struct snd_soc_dapm_path *p, int i) | |
262 | { | |
263 | switch (w->id) { | |
264 | case snd_soc_dapm_switch: | |
ca9c1aae IM |
265 | case snd_soc_dapm_mixer: |
266 | case snd_soc_dapm_mixer_named_ctl: { | |
2b97eabc | 267 | int val; |
4eaa9819 | 268 | struct soc_mixer_control *mc = (struct soc_mixer_control *) |
82cfecdc | 269 | w->kcontrol_news[i].private_value; |
815ecf8d JS |
270 | unsigned int reg = mc->reg; |
271 | unsigned int shift = mc->shift; | |
4eaa9819 | 272 | int max = mc->max; |
815ecf8d JS |
273 | unsigned int mask = (1 << fls(max)) - 1; |
274 | unsigned int invert = mc->invert; | |
2b97eabc | 275 | |
0445bdf4 | 276 | val = soc_widget_read(w, reg); |
2b97eabc RP |
277 | val = (val >> shift) & mask; |
278 | ||
279 | if ((invert && !val) || (!invert && val)) | |
280 | p->connect = 1; | |
281 | else | |
282 | p->connect = 0; | |
283 | } | |
284 | break; | |
285 | case snd_soc_dapm_mux: { | |
82cfecdc SW |
286 | struct soc_enum *e = (struct soc_enum *) |
287 | w->kcontrol_news[i].private_value; | |
2b97eabc RP |
288 | int val, item, bitmask; |
289 | ||
f8ba0b7b | 290 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
88d96086 | 291 | ; |
0445bdf4 | 292 | val = soc_widget_read(w, e->reg); |
2b97eabc RP |
293 | item = (val >> e->shift_l) & (bitmask - 1); |
294 | ||
295 | p->connect = 0; | |
f8ba0b7b | 296 | for (i = 0; i < e->max; i++) { |
2b97eabc RP |
297 | if (!(strcmp(p->name, e->texts[i])) && item == i) |
298 | p->connect = 1; | |
299 | } | |
300 | } | |
301 | break; | |
24ff33ac | 302 | case snd_soc_dapm_virt_mux: { |
82cfecdc SW |
303 | struct soc_enum *e = (struct soc_enum *) |
304 | w->kcontrol_news[i].private_value; | |
24ff33ac DP |
305 | |
306 | p->connect = 0; | |
307 | /* since a virtual mux has no backing registers to | |
308 | * decide which path to connect, it will try to match | |
309 | * with the first enumeration. This is to ensure | |
310 | * that the default mux choice (the first) will be | |
311 | * correctly powered up during initialization. | |
312 | */ | |
313 | if (!strcmp(p->name, e->texts[0])) | |
314 | p->connect = 1; | |
315 | } | |
316 | break; | |
2e72f8e3 | 317 | case snd_soc_dapm_value_mux: { |
74155556 | 318 | struct soc_enum *e = (struct soc_enum *) |
82cfecdc | 319 | w->kcontrol_news[i].private_value; |
2e72f8e3 PU |
320 | int val, item; |
321 | ||
0445bdf4 | 322 | val = soc_widget_read(w, e->reg); |
2e72f8e3 PU |
323 | val = (val >> e->shift_l) & e->mask; |
324 | for (item = 0; item < e->max; item++) { | |
325 | if (val == e->values[item]) | |
326 | break; | |
327 | } | |
328 | ||
329 | p->connect = 0; | |
330 | for (i = 0; i < e->max; i++) { | |
331 | if (!(strcmp(p->name, e->texts[i])) && item == i) | |
332 | p->connect = 1; | |
333 | } | |
334 | } | |
335 | break; | |
56563100 | 336 | /* does not affect routing - always connected */ |
2b97eabc | 337 | case snd_soc_dapm_pga: |
d88429a6 | 338 | case snd_soc_dapm_out_drv: |
2b97eabc RP |
339 | case snd_soc_dapm_output: |
340 | case snd_soc_dapm_adc: | |
341 | case snd_soc_dapm_input: | |
342 | case snd_soc_dapm_dac: | |
343 | case snd_soc_dapm_micbias: | |
344 | case snd_soc_dapm_vmid: | |
246d0a17 | 345 | case snd_soc_dapm_supply: |
010ff262 MB |
346 | case snd_soc_dapm_aif_in: |
347 | case snd_soc_dapm_aif_out: | |
2b97eabc RP |
348 | case snd_soc_dapm_hp: |
349 | case snd_soc_dapm_mic: | |
350 | case snd_soc_dapm_spk: | |
351 | case snd_soc_dapm_line: | |
56563100 MB |
352 | p->connect = 1; |
353 | break; | |
354 | /* does affect routing - dynamically connected */ | |
2b97eabc RP |
355 | case snd_soc_dapm_pre: |
356 | case snd_soc_dapm_post: | |
357 | p->connect = 0; | |
358 | break; | |
359 | } | |
360 | } | |
361 | ||
74b8f955 | 362 | /* connect mux widget to its interconnecting audio paths */ |
ce6120cc | 363 | static int dapm_connect_mux(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
364 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, |
365 | struct snd_soc_dapm_path *path, const char *control_name, | |
366 | const struct snd_kcontrol_new *kcontrol) | |
367 | { | |
368 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
369 | int i; | |
370 | ||
f8ba0b7b | 371 | for (i = 0; i < e->max; i++) { |
2b97eabc | 372 | if (!(strcmp(control_name, e->texts[i]))) { |
8ddab3f5 | 373 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
374 | list_add(&path->list_sink, &dest->sources); |
375 | list_add(&path->list_source, &src->sinks); | |
376 | path->name = (char*)e->texts[i]; | |
377 | dapm_set_path_status(dest, path, 0); | |
378 | return 0; | |
379 | } | |
380 | } | |
381 | ||
382 | return -ENODEV; | |
383 | } | |
384 | ||
74b8f955 | 385 | /* connect mixer widget to its interconnecting audio paths */ |
ce6120cc | 386 | static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
387 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, |
388 | struct snd_soc_dapm_path *path, const char *control_name) | |
389 | { | |
390 | int i; | |
391 | ||
392 | /* search for mixer kcontrol */ | |
393 | for (i = 0; i < dest->num_kcontrols; i++) { | |
82cfecdc | 394 | if (!strcmp(control_name, dest->kcontrol_news[i].name)) { |
8ddab3f5 | 395 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
396 | list_add(&path->list_sink, &dest->sources); |
397 | list_add(&path->list_source, &src->sinks); | |
82cfecdc | 398 | path->name = dest->kcontrol_news[i].name; |
2b97eabc RP |
399 | dapm_set_path_status(dest, path, i); |
400 | return 0; | |
401 | } | |
402 | } | |
403 | return -ENODEV; | |
404 | } | |
405 | ||
af46800b | 406 | static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context *dapm, |
1007da06 | 407 | struct snd_soc_dapm_widget *kcontrolw, |
af46800b SW |
408 | const struct snd_kcontrol_new *kcontrol_new, |
409 | struct snd_kcontrol **kcontrol) | |
410 | { | |
411 | struct snd_soc_dapm_widget *w; | |
412 | int i; | |
413 | ||
414 | *kcontrol = NULL; | |
415 | ||
416 | list_for_each_entry(w, &dapm->card->widgets, list) { | |
1007da06 SW |
417 | if (w == kcontrolw || w->dapm != kcontrolw->dapm) |
418 | continue; | |
af46800b SW |
419 | for (i = 0; i < w->num_kcontrols; i++) { |
420 | if (&w->kcontrol_news[i] == kcontrol_new) { | |
421 | if (w->kcontrols) | |
422 | *kcontrol = w->kcontrols[i]; | |
423 | return 1; | |
424 | } | |
425 | } | |
426 | } | |
427 | ||
428 | return 0; | |
429 | } | |
430 | ||
2b97eabc | 431 | /* create new dapm mixer control */ |
4b80b8c2 | 432 | static int dapm_new_mixer(struct snd_soc_dapm_widget *w) |
2b97eabc | 433 | { |
4b80b8c2 | 434 | struct snd_soc_dapm_context *dapm = w->dapm; |
2b97eabc | 435 | int i, ret = 0; |
3e5ff4df | 436 | size_t name_len, prefix_len; |
2b97eabc | 437 | struct snd_soc_dapm_path *path; |
12ea2c78 | 438 | struct snd_card *card = dapm->card->snd_card; |
efb7ac3f | 439 | const char *prefix; |
fafd2176 SW |
440 | struct snd_soc_dapm_widget_list *wlist; |
441 | size_t wlistsize; | |
efb7ac3f MB |
442 | |
443 | if (dapm->codec) | |
444 | prefix = dapm->codec->name_prefix; | |
445 | else | |
446 | prefix = NULL; | |
2b97eabc | 447 | |
3e5ff4df MB |
448 | if (prefix) |
449 | prefix_len = strlen(prefix) + 1; | |
450 | else | |
451 | prefix_len = 0; | |
452 | ||
2b97eabc RP |
453 | /* add kcontrol */ |
454 | for (i = 0; i < w->num_kcontrols; i++) { | |
455 | ||
456 | /* match name */ | |
457 | list_for_each_entry(path, &w->sources, list_sink) { | |
458 | ||
459 | /* mixer/mux paths name must match control name */ | |
82cfecdc | 460 | if (path->name != (char *)w->kcontrol_news[i].name) |
2b97eabc RP |
461 | continue; |
462 | ||
82cd8764 LPC |
463 | if (w->kcontrols[i]) { |
464 | path->kcontrol = w->kcontrols[i]; | |
465 | continue; | |
466 | } | |
467 | ||
fafd2176 SW |
468 | wlistsize = sizeof(struct snd_soc_dapm_widget_list) + |
469 | sizeof(struct snd_soc_dapm_widget *), | |
470 | wlist = kzalloc(wlistsize, GFP_KERNEL); | |
471 | if (wlist == NULL) { | |
472 | dev_err(dapm->dev, | |
473 | "asoc: can't allocate widget list for %s\n", | |
474 | w->name); | |
475 | return -ENOMEM; | |
476 | } | |
477 | wlist->num_widgets = 1; | |
478 | wlist->widgets[0] = w; | |
479 | ||
ca9c1aae IM |
480 | /* add dapm control with long name. |
481 | * for dapm_mixer this is the concatenation of the | |
482 | * mixer and kcontrol name. | |
483 | * for dapm_mixer_named_ctl this is simply the | |
484 | * kcontrol name. | |
485 | */ | |
82cfecdc | 486 | name_len = strlen(w->kcontrol_news[i].name) + 1; |
07495f3e | 487 | if (w->id != snd_soc_dapm_mixer_named_ctl) |
ca9c1aae IM |
488 | name_len += 1 + strlen(w->name); |
489 | ||
219b93f5 | 490 | path->long_name = kmalloc(name_len, GFP_KERNEL); |
ca9c1aae | 491 | |
fafd2176 SW |
492 | if (path->long_name == NULL) { |
493 | kfree(wlist); | |
2b97eabc | 494 | return -ENOMEM; |
fafd2176 | 495 | } |
2b97eabc | 496 | |
ca9c1aae | 497 | switch (w->id) { |
ca9c1aae | 498 | default: |
3e5ff4df MB |
499 | /* The control will get a prefix from |
500 | * the control creation process but | |
501 | * we're also using the same prefix | |
502 | * for widgets so cut the prefix off | |
503 | * the front of the widget name. | |
504 | */ | |
ca9c1aae | 505 | snprintf(path->long_name, name_len, "%s %s", |
3e5ff4df | 506 | w->name + prefix_len, |
82cfecdc | 507 | w->kcontrol_news[i].name); |
07495f3e | 508 | break; |
ca9c1aae IM |
509 | case snd_soc_dapm_mixer_named_ctl: |
510 | snprintf(path->long_name, name_len, "%s", | |
82cfecdc | 511 | w->kcontrol_news[i].name); |
07495f3e | 512 | break; |
ca9c1aae IM |
513 | } |
514 | ||
219b93f5 MB |
515 | path->long_name[name_len - 1] = '\0'; |
516 | ||
fafd2176 SW |
517 | path->kcontrol = snd_soc_cnew(&w->kcontrol_news[i], |
518 | wlist, path->long_name, | |
519 | prefix); | |
ce6120cc | 520 | ret = snd_ctl_add(card, path->kcontrol); |
2b97eabc | 521 | if (ret < 0) { |
f7d41ae8 JN |
522 | dev_err(dapm->dev, |
523 | "asoc: failed to add dapm kcontrol %s: %d\n", | |
524 | path->long_name, ret); | |
fafd2176 | 525 | kfree(wlist); |
2b97eabc RP |
526 | kfree(path->long_name); |
527 | path->long_name = NULL; | |
528 | return ret; | |
529 | } | |
fad59888 | 530 | w->kcontrols[i] = path->kcontrol; |
2b97eabc RP |
531 | } |
532 | } | |
533 | return ret; | |
534 | } | |
535 | ||
536 | /* create new dapm mux control */ | |
4b80b8c2 | 537 | static int dapm_new_mux(struct snd_soc_dapm_widget *w) |
2b97eabc | 538 | { |
4b80b8c2 | 539 | struct snd_soc_dapm_context *dapm = w->dapm; |
2b97eabc RP |
540 | struct snd_soc_dapm_path *path = NULL; |
541 | struct snd_kcontrol *kcontrol; | |
12ea2c78 | 542 | struct snd_card *card = dapm->card->snd_card; |
efb7ac3f | 543 | const char *prefix; |
3e5ff4df | 544 | size_t prefix_len; |
af46800b | 545 | int ret; |
fafd2176 | 546 | struct snd_soc_dapm_widget_list *wlist; |
af46800b | 547 | int shared, wlistentries; |
fafd2176 | 548 | size_t wlistsize; |
af46800b | 549 | char *name; |
2b97eabc | 550 | |
af46800b SW |
551 | if (w->num_kcontrols != 1) { |
552 | dev_err(dapm->dev, | |
553 | "asoc: mux %s has incorrect number of controls\n", | |
554 | w->name); | |
2b97eabc RP |
555 | return -EINVAL; |
556 | } | |
557 | ||
1007da06 | 558 | shared = dapm_is_shared_kcontrol(dapm, w, &w->kcontrol_news[0], |
af46800b SW |
559 | &kcontrol); |
560 | if (kcontrol) { | |
561 | wlist = kcontrol->private_data; | |
562 | wlistentries = wlist->num_widgets + 1; | |
563 | } else { | |
564 | wlist = NULL; | |
565 | wlistentries = 1; | |
566 | } | |
fafd2176 | 567 | wlistsize = sizeof(struct snd_soc_dapm_widget_list) + |
af46800b SW |
568 | wlistentries * sizeof(struct snd_soc_dapm_widget *), |
569 | wlist = krealloc(wlist, wlistsize, GFP_KERNEL); | |
fafd2176 SW |
570 | if (wlist == NULL) { |
571 | dev_err(dapm->dev, | |
572 | "asoc: can't allocate widget list for %s\n", w->name); | |
573 | return -ENOMEM; | |
574 | } | |
af46800b SW |
575 | wlist->num_widgets = wlistentries; |
576 | wlist->widgets[wlistentries - 1] = w; | |
efb7ac3f | 577 | |
af46800b SW |
578 | if (!kcontrol) { |
579 | if (dapm->codec) | |
580 | prefix = dapm->codec->name_prefix; | |
581 | else | |
582 | prefix = NULL; | |
583 | ||
584 | if (shared) { | |
585 | name = w->kcontrol_news[0].name; | |
586 | prefix_len = 0; | |
587 | } else { | |
588 | name = w->name; | |
589 | if (prefix) | |
590 | prefix_len = strlen(prefix) + 1; | |
591 | else | |
592 | prefix_len = 0; | |
593 | } | |
3e5ff4df | 594 | |
af46800b SW |
595 | /* |
596 | * The control will get a prefix from the control creation | |
597 | * process but we're also using the same prefix for widgets so | |
598 | * cut the prefix off the front of the widget name. | |
599 | */ | |
600 | kcontrol = snd_soc_cnew(&w->kcontrol_news[0], wlist, | |
601 | name + prefix_len, prefix); | |
602 | ret = snd_ctl_add(card, kcontrol); | |
603 | if (ret < 0) { | |
53daf208 MB |
604 | dev_err(dapm->dev, "failed to add kcontrol %s: %d\n", |
605 | w->name, ret); | |
af46800b SW |
606 | kfree(wlist); |
607 | return ret; | |
608 | } | |
609 | } | |
ce6120cc | 610 | |
af46800b | 611 | kcontrol->private_data = wlist; |
2b97eabc | 612 | |
fad59888 SW |
613 | w->kcontrols[0] = kcontrol; |
614 | ||
2b97eabc RP |
615 | list_for_each_entry(path, &w->sources, list_sink) |
616 | path->kcontrol = kcontrol; | |
617 | ||
af46800b | 618 | return 0; |
2b97eabc RP |
619 | } |
620 | ||
621 | /* create new dapm volume control */ | |
4b80b8c2 | 622 | static int dapm_new_pga(struct snd_soc_dapm_widget *w) |
2b97eabc | 623 | { |
a6c65736 | 624 | if (w->num_kcontrols) |
f7d41ae8 JN |
625 | dev_err(w->dapm->dev, |
626 | "asoc: PGA controls not supported: '%s'\n", w->name); | |
2b97eabc | 627 | |
a6c65736 | 628 | return 0; |
2b97eabc RP |
629 | } |
630 | ||
631 | /* reset 'walked' bit for each dapm path */ | |
ce6120cc | 632 | static inline void dapm_clear_walk(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
633 | { |
634 | struct snd_soc_dapm_path *p; | |
635 | ||
8ddab3f5 | 636 | list_for_each_entry(p, &dapm->card->paths, list) |
2b97eabc RP |
637 | p->walked = 0; |
638 | } | |
639 | ||
9949788b MB |
640 | /* We implement power down on suspend by checking the power state of |
641 | * the ALSA card - when we are suspending the ALSA state for the card | |
642 | * is set to D3. | |
643 | */ | |
644 | static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget) | |
645 | { | |
12ea2c78 | 646 | int level = snd_power_get_state(widget->dapm->card->snd_card); |
9949788b | 647 | |
f0fba2ad | 648 | switch (level) { |
9949788b MB |
649 | case SNDRV_CTL_POWER_D3hot: |
650 | case SNDRV_CTL_POWER_D3cold: | |
1547aba9 | 651 | if (widget->ignore_suspend) |
f7d41ae8 JN |
652 | dev_dbg(widget->dapm->dev, "%s ignoring suspend\n", |
653 | widget->name); | |
1547aba9 | 654 | return widget->ignore_suspend; |
9949788b MB |
655 | default: |
656 | return 1; | |
657 | } | |
658 | } | |
659 | ||
2b97eabc RP |
660 | /* |
661 | * Recursively check for a completed path to an active or physically connected | |
662 | * output widget. Returns number of complete paths. | |
663 | */ | |
664 | static int is_connected_output_ep(struct snd_soc_dapm_widget *widget) | |
665 | { | |
666 | struct snd_soc_dapm_path *path; | |
667 | int con = 0; | |
668 | ||
024dc078 MB |
669 | if (widget->outputs >= 0) |
670 | return widget->outputs; | |
671 | ||
de02d078 MB |
672 | DAPM_UPDATE_STAT(widget, path_checks); |
673 | ||
246d0a17 MB |
674 | if (widget->id == snd_soc_dapm_supply) |
675 | return 0; | |
676 | ||
010ff262 MB |
677 | switch (widget->id) { |
678 | case snd_soc_dapm_adc: | |
679 | case snd_soc_dapm_aif_out: | |
024dc078 MB |
680 | if (widget->active) { |
681 | widget->outputs = snd_soc_dapm_suspend_check(widget); | |
682 | return widget->outputs; | |
683 | } | |
010ff262 MB |
684 | default: |
685 | break; | |
686 | } | |
2b97eabc RP |
687 | |
688 | if (widget->connected) { | |
689 | /* connected pin ? */ | |
024dc078 MB |
690 | if (widget->id == snd_soc_dapm_output && !widget->ext) { |
691 | widget->outputs = snd_soc_dapm_suspend_check(widget); | |
692 | return widget->outputs; | |
693 | } | |
2b97eabc RP |
694 | |
695 | /* connected jack or spk ? */ | |
024dc078 MB |
696 | if (widget->id == snd_soc_dapm_hp || |
697 | widget->id == snd_soc_dapm_spk || | |
698 | (widget->id == snd_soc_dapm_line && | |
699 | !list_empty(&widget->sources))) { | |
700 | widget->outputs = snd_soc_dapm_suspend_check(widget); | |
701 | return widget->outputs; | |
702 | } | |
2b97eabc RP |
703 | } |
704 | ||
705 | list_for_each_entry(path, &widget->sinks, list_source) { | |
e56235e0 MB |
706 | DAPM_UPDATE_STAT(widget, neighbour_checks); |
707 | ||
bf3a9e13 MB |
708 | if (path->weak) |
709 | continue; | |
710 | ||
2b97eabc RP |
711 | if (path->walked) |
712 | continue; | |
713 | ||
714 | if (path->sink && path->connect) { | |
715 | path->walked = 1; | |
716 | con += is_connected_output_ep(path->sink); | |
717 | } | |
718 | } | |
719 | ||
024dc078 MB |
720 | widget->outputs = con; |
721 | ||
2b97eabc RP |
722 | return con; |
723 | } | |
724 | ||
725 | /* | |
726 | * Recursively check for a completed path to an active or physically connected | |
727 | * input widget. Returns number of complete paths. | |
728 | */ | |
729 | static int is_connected_input_ep(struct snd_soc_dapm_widget *widget) | |
730 | { | |
731 | struct snd_soc_dapm_path *path; | |
732 | int con = 0; | |
733 | ||
024dc078 MB |
734 | if (widget->inputs >= 0) |
735 | return widget->inputs; | |
736 | ||
de02d078 MB |
737 | DAPM_UPDATE_STAT(widget, path_checks); |
738 | ||
246d0a17 MB |
739 | if (widget->id == snd_soc_dapm_supply) |
740 | return 0; | |
741 | ||
2b97eabc | 742 | /* active stream ? */ |
010ff262 MB |
743 | switch (widget->id) { |
744 | case snd_soc_dapm_dac: | |
745 | case snd_soc_dapm_aif_in: | |
024dc078 MB |
746 | if (widget->active) { |
747 | widget->inputs = snd_soc_dapm_suspend_check(widget); | |
748 | return widget->inputs; | |
749 | } | |
010ff262 MB |
750 | default: |
751 | break; | |
752 | } | |
2b97eabc RP |
753 | |
754 | if (widget->connected) { | |
755 | /* connected pin ? */ | |
024dc078 MB |
756 | if (widget->id == snd_soc_dapm_input && !widget->ext) { |
757 | widget->inputs = snd_soc_dapm_suspend_check(widget); | |
758 | return widget->inputs; | |
759 | } | |
2b97eabc RP |
760 | |
761 | /* connected VMID/Bias for lower pops */ | |
024dc078 MB |
762 | if (widget->id == snd_soc_dapm_vmid) { |
763 | widget->inputs = snd_soc_dapm_suspend_check(widget); | |
764 | return widget->inputs; | |
765 | } | |
2b97eabc RP |
766 | |
767 | /* connected jack ? */ | |
eaeae5d9 | 768 | if (widget->id == snd_soc_dapm_mic || |
024dc078 MB |
769 | (widget->id == snd_soc_dapm_line && |
770 | !list_empty(&widget->sinks))) { | |
771 | widget->inputs = snd_soc_dapm_suspend_check(widget); | |
772 | return widget->inputs; | |
773 | } | |
774 | ||
2b97eabc RP |
775 | } |
776 | ||
777 | list_for_each_entry(path, &widget->sources, list_sink) { | |
e56235e0 MB |
778 | DAPM_UPDATE_STAT(widget, neighbour_checks); |
779 | ||
bf3a9e13 MB |
780 | if (path->weak) |
781 | continue; | |
782 | ||
2b97eabc RP |
783 | if (path->walked) |
784 | continue; | |
785 | ||
786 | if (path->source && path->connect) { | |
787 | path->walked = 1; | |
788 | con += is_connected_input_ep(path->source); | |
789 | } | |
790 | } | |
791 | ||
024dc078 MB |
792 | widget->inputs = con; |
793 | ||
2b97eabc RP |
794 | return con; |
795 | } | |
796 | ||
e2be2ccf JN |
797 | /* |
798 | * Handler for generic register modifier widget. | |
799 | */ | |
800 | int dapm_reg_event(struct snd_soc_dapm_widget *w, | |
801 | struct snd_kcontrol *kcontrol, int event) | |
802 | { | |
803 | unsigned int val; | |
804 | ||
805 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
806 | val = w->on_val; | |
807 | else | |
808 | val = w->off_val; | |
809 | ||
0445bdf4 | 810 | soc_widget_update_bits(w, -(w->reg + 1), |
e2be2ccf JN |
811 | w->mask << w->shift, val << w->shift); |
812 | ||
813 | return 0; | |
814 | } | |
11589418 | 815 | EXPORT_SYMBOL_GPL(dapm_reg_event); |
e2be2ccf | 816 | |
d805002b MB |
817 | static int dapm_widget_power_check(struct snd_soc_dapm_widget *w) |
818 | { | |
9b8a83b2 MB |
819 | if (w->power_checked) |
820 | return w->new_power; | |
821 | ||
d805002b | 822 | if (w->force) |
9b8a83b2 | 823 | w->new_power = 1; |
d805002b | 824 | else |
9b8a83b2 MB |
825 | w->new_power = w->power_check(w); |
826 | ||
827 | w->power_checked = true; | |
828 | ||
829 | return w->new_power; | |
d805002b MB |
830 | } |
831 | ||
cd0f2d47 MB |
832 | /* Generic check to see if a widget should be powered. |
833 | */ | |
834 | static int dapm_generic_check_power(struct snd_soc_dapm_widget *w) | |
835 | { | |
836 | int in, out; | |
837 | ||
de02d078 MB |
838 | DAPM_UPDATE_STAT(w, power_checks); |
839 | ||
cd0f2d47 | 840 | in = is_connected_input_ep(w); |
ce6120cc | 841 | dapm_clear_walk(w->dapm); |
cd0f2d47 | 842 | out = is_connected_output_ep(w); |
ce6120cc | 843 | dapm_clear_walk(w->dapm); |
cd0f2d47 MB |
844 | return out != 0 && in != 0; |
845 | } | |
846 | ||
6ea31b9f MB |
847 | /* Check to see if an ADC has power */ |
848 | static int dapm_adc_check_power(struct snd_soc_dapm_widget *w) | |
849 | { | |
850 | int in; | |
851 | ||
de02d078 MB |
852 | DAPM_UPDATE_STAT(w, power_checks); |
853 | ||
6ea31b9f MB |
854 | if (w->active) { |
855 | in = is_connected_input_ep(w); | |
ce6120cc | 856 | dapm_clear_walk(w->dapm); |
6ea31b9f MB |
857 | return in != 0; |
858 | } else { | |
859 | return dapm_generic_check_power(w); | |
860 | } | |
861 | } | |
862 | ||
863 | /* Check to see if a DAC has power */ | |
864 | static int dapm_dac_check_power(struct snd_soc_dapm_widget *w) | |
865 | { | |
866 | int out; | |
867 | ||
de02d078 MB |
868 | DAPM_UPDATE_STAT(w, power_checks); |
869 | ||
6ea31b9f MB |
870 | if (w->active) { |
871 | out = is_connected_output_ep(w); | |
ce6120cc | 872 | dapm_clear_walk(w->dapm); |
6ea31b9f MB |
873 | return out != 0; |
874 | } else { | |
875 | return dapm_generic_check_power(w); | |
876 | } | |
877 | } | |
878 | ||
246d0a17 MB |
879 | /* Check to see if a power supply is needed */ |
880 | static int dapm_supply_check_power(struct snd_soc_dapm_widget *w) | |
881 | { | |
882 | struct snd_soc_dapm_path *path; | |
246d0a17 | 883 | |
de02d078 MB |
884 | DAPM_UPDATE_STAT(w, power_checks); |
885 | ||
246d0a17 MB |
886 | /* Check if one of our outputs is connected */ |
887 | list_for_each_entry(path, &w->sinks, list_source) { | |
a8fdac83 MB |
888 | DAPM_UPDATE_STAT(w, neighbour_checks); |
889 | ||
bf3a9e13 MB |
890 | if (path->weak) |
891 | continue; | |
892 | ||
215edda3 MB |
893 | if (path->connected && |
894 | !path->connected(path->source, path->sink)) | |
895 | continue; | |
896 | ||
3017358a MB |
897 | if (!path->sink) |
898 | continue; | |
899 | ||
f68d7e16 MB |
900 | if (dapm_widget_power_check(path->sink)) |
901 | return 1; | |
246d0a17 MB |
902 | } |
903 | ||
ce6120cc | 904 | dapm_clear_walk(w->dapm); |
246d0a17 | 905 | |
f68d7e16 | 906 | return 0; |
246d0a17 MB |
907 | } |
908 | ||
35c64bca MB |
909 | static int dapm_always_on_check_power(struct snd_soc_dapm_widget *w) |
910 | { | |
911 | return 1; | |
912 | } | |
913 | ||
38357ab2 MB |
914 | static int dapm_seq_compare(struct snd_soc_dapm_widget *a, |
915 | struct snd_soc_dapm_widget *b, | |
828a842f | 916 | bool power_up) |
42aa3418 | 917 | { |
828a842f MB |
918 | int *sort; |
919 | ||
920 | if (power_up) | |
921 | sort = dapm_up_seq; | |
922 | else | |
923 | sort = dapm_down_seq; | |
924 | ||
38357ab2 MB |
925 | if (sort[a->id] != sort[b->id]) |
926 | return sort[a->id] - sort[b->id]; | |
20e4859d MB |
927 | if (a->subseq != b->subseq) { |
928 | if (power_up) | |
929 | return a->subseq - b->subseq; | |
930 | else | |
931 | return b->subseq - a->subseq; | |
932 | } | |
b22ead2a MB |
933 | if (a->reg != b->reg) |
934 | return a->reg - b->reg; | |
84dab567 MB |
935 | if (a->dapm != b->dapm) |
936 | return (unsigned long)a->dapm - (unsigned long)b->dapm; | |
42aa3418 | 937 | |
38357ab2 MB |
938 | return 0; |
939 | } | |
42aa3418 | 940 | |
38357ab2 MB |
941 | /* Insert a widget in order into a DAPM power sequence. */ |
942 | static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget, | |
943 | struct list_head *list, | |
828a842f | 944 | bool power_up) |
38357ab2 MB |
945 | { |
946 | struct snd_soc_dapm_widget *w; | |
947 | ||
948 | list_for_each_entry(w, list, power_list) | |
828a842f | 949 | if (dapm_seq_compare(new_widget, w, power_up) < 0) { |
38357ab2 MB |
950 | list_add_tail(&new_widget->power_list, &w->power_list); |
951 | return; | |
952 | } | |
953 | ||
954 | list_add_tail(&new_widget->power_list, list); | |
955 | } | |
956 | ||
68f89ad8 MB |
957 | static void dapm_seq_check_event(struct snd_soc_dapm_context *dapm, |
958 | struct snd_soc_dapm_widget *w, int event) | |
959 | { | |
960 | struct snd_soc_card *card = dapm->card; | |
961 | const char *ev_name; | |
962 | int power, ret; | |
963 | ||
964 | switch (event) { | |
965 | case SND_SOC_DAPM_PRE_PMU: | |
966 | ev_name = "PRE_PMU"; | |
967 | power = 1; | |
968 | break; | |
969 | case SND_SOC_DAPM_POST_PMU: | |
970 | ev_name = "POST_PMU"; | |
971 | power = 1; | |
972 | break; | |
973 | case SND_SOC_DAPM_PRE_PMD: | |
974 | ev_name = "PRE_PMD"; | |
975 | power = 0; | |
976 | break; | |
977 | case SND_SOC_DAPM_POST_PMD: | |
978 | ev_name = "POST_PMD"; | |
979 | power = 0; | |
980 | break; | |
981 | default: | |
982 | BUG(); | |
983 | return; | |
984 | } | |
985 | ||
986 | if (w->power != power) | |
987 | return; | |
988 | ||
989 | if (w->event && (w->event_flags & event)) { | |
990 | pop_dbg(dapm->dev, card->pop_time, "pop test : %s %s\n", | |
991 | w->name, ev_name); | |
84e90930 | 992 | trace_snd_soc_dapm_widget_event_start(w, event); |
68f89ad8 | 993 | ret = w->event(w, NULL, event); |
84e90930 | 994 | trace_snd_soc_dapm_widget_event_done(w, event); |
68f89ad8 MB |
995 | if (ret < 0) |
996 | pr_err("%s: %s event failed: %d\n", | |
997 | ev_name, w->name, ret); | |
998 | } | |
999 | } | |
1000 | ||
b22ead2a | 1001 | /* Apply the coalesced changes from a DAPM sequence */ |
ce6120cc | 1002 | static void dapm_seq_run_coalesced(struct snd_soc_dapm_context *dapm, |
b22ead2a | 1003 | struct list_head *pending) |
163cac06 | 1004 | { |
3a45b867 | 1005 | struct snd_soc_card *card = dapm->card; |
68f89ad8 MB |
1006 | struct snd_soc_dapm_widget *w; |
1007 | int reg, power; | |
b22ead2a MB |
1008 | unsigned int value = 0; |
1009 | unsigned int mask = 0; | |
1010 | unsigned int cur_mask; | |
1011 | ||
1012 | reg = list_first_entry(pending, struct snd_soc_dapm_widget, | |
1013 | power_list)->reg; | |
1014 | ||
1015 | list_for_each_entry(w, pending, power_list) { | |
1016 | cur_mask = 1 << w->shift; | |
1017 | BUG_ON(reg != w->reg); | |
1018 | ||
1019 | if (w->invert) | |
1020 | power = !w->power; | |
1021 | else | |
1022 | power = w->power; | |
1023 | ||
1024 | mask |= cur_mask; | |
1025 | if (power) | |
1026 | value |= cur_mask; | |
1027 | ||
fd8d3bc0 | 1028 | pop_dbg(dapm->dev, card->pop_time, |
b22ead2a MB |
1029 | "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n", |
1030 | w->name, reg, value, mask); | |
81628103 | 1031 | |
68f89ad8 MB |
1032 | /* Check for events */ |
1033 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMU); | |
1034 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMD); | |
81628103 MB |
1035 | } |
1036 | ||
1037 | if (reg >= 0) { | |
29376bc7 MB |
1038 | /* Any widget will do, they should all be updating the |
1039 | * same register. | |
1040 | */ | |
1041 | w = list_first_entry(pending, struct snd_soc_dapm_widget, | |
1042 | power_list); | |
1043 | ||
fd8d3bc0 | 1044 | pop_dbg(dapm->dev, card->pop_time, |
81628103 | 1045 | "pop test : Applying 0x%x/0x%x to %x in %dms\n", |
3a45b867 JN |
1046 | value, mask, reg, card->pop_time); |
1047 | pop_wait(card->pop_time); | |
0445bdf4 | 1048 | soc_widget_update_bits(w, reg, mask, value); |
b22ead2a MB |
1049 | } |
1050 | ||
81628103 | 1051 | list_for_each_entry(w, pending, power_list) { |
68f89ad8 MB |
1052 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMU); |
1053 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMD); | |
81628103 | 1054 | } |
b22ead2a | 1055 | } |
42aa3418 | 1056 | |
b22ead2a MB |
1057 | /* Apply a DAPM power sequence. |
1058 | * | |
1059 | * We walk over a pre-sorted list of widgets to apply power to. In | |
1060 | * order to minimise the number of writes to the device required | |
1061 | * multiple widgets will be updated in a single write where possible. | |
1062 | * Currently anything that requires more than a single write is not | |
1063 | * handled. | |
1064 | */ | |
ce6120cc | 1065 | static void dapm_seq_run(struct snd_soc_dapm_context *dapm, |
828a842f | 1066 | struct list_head *list, int event, bool power_up) |
b22ead2a MB |
1067 | { |
1068 | struct snd_soc_dapm_widget *w, *n; | |
1069 | LIST_HEAD(pending); | |
1070 | int cur_sort = -1; | |
20e4859d | 1071 | int cur_subseq = -1; |
b22ead2a | 1072 | int cur_reg = SND_SOC_NOPM; |
7be31be8 | 1073 | struct snd_soc_dapm_context *cur_dapm = NULL; |
474b62d6 | 1074 | int ret, i; |
828a842f MB |
1075 | int *sort; |
1076 | ||
1077 | if (power_up) | |
1078 | sort = dapm_up_seq; | |
1079 | else | |
1080 | sort = dapm_down_seq; | |
163cac06 | 1081 | |
b22ead2a MB |
1082 | list_for_each_entry_safe(w, n, list, power_list) { |
1083 | ret = 0; | |
1084 | ||
1085 | /* Do we need to apply any queued changes? */ | |
7be31be8 | 1086 | if (sort[w->id] != cur_sort || w->reg != cur_reg || |
20e4859d | 1087 | w->dapm != cur_dapm || w->subseq != cur_subseq) { |
b22ead2a | 1088 | if (!list_empty(&pending)) |
7be31be8 | 1089 | dapm_seq_run_coalesced(cur_dapm, &pending); |
b22ead2a | 1090 | |
474b62d6 MB |
1091 | if (cur_dapm && cur_dapm->seq_notifier) { |
1092 | for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++) | |
1093 | if (sort[i] == cur_sort) | |
1094 | cur_dapm->seq_notifier(cur_dapm, | |
f85a9e0d MB |
1095 | i, |
1096 | cur_subseq); | |
474b62d6 MB |
1097 | } |
1098 | ||
b22ead2a MB |
1099 | INIT_LIST_HEAD(&pending); |
1100 | cur_sort = -1; | |
b0b3e6f8 | 1101 | cur_subseq = INT_MIN; |
b22ead2a | 1102 | cur_reg = SND_SOC_NOPM; |
7be31be8 | 1103 | cur_dapm = NULL; |
b22ead2a MB |
1104 | } |
1105 | ||
163cac06 MB |
1106 | switch (w->id) { |
1107 | case snd_soc_dapm_pre: | |
1108 | if (!w->event) | |
b22ead2a MB |
1109 | list_for_each_entry_safe_continue(w, n, list, |
1110 | power_list); | |
163cac06 | 1111 | |
b22ead2a | 1112 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
1113 | ret = w->event(w, |
1114 | NULL, SND_SOC_DAPM_PRE_PMU); | |
b22ead2a | 1115 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
1116 | ret = w->event(w, |
1117 | NULL, SND_SOC_DAPM_PRE_PMD); | |
163cac06 MB |
1118 | break; |
1119 | ||
1120 | case snd_soc_dapm_post: | |
1121 | if (!w->event) | |
b22ead2a MB |
1122 | list_for_each_entry_safe_continue(w, n, list, |
1123 | power_list); | |
163cac06 | 1124 | |
b22ead2a | 1125 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
1126 | ret = w->event(w, |
1127 | NULL, SND_SOC_DAPM_POST_PMU); | |
b22ead2a | 1128 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
1129 | ret = w->event(w, |
1130 | NULL, SND_SOC_DAPM_POST_PMD); | |
163cac06 MB |
1131 | break; |
1132 | ||
b22ead2a | 1133 | default: |
81628103 MB |
1134 | /* Queue it up for application */ |
1135 | cur_sort = sort[w->id]; | |
20e4859d | 1136 | cur_subseq = w->subseq; |
81628103 | 1137 | cur_reg = w->reg; |
7be31be8 | 1138 | cur_dapm = w->dapm; |
81628103 MB |
1139 | list_move(&w->power_list, &pending); |
1140 | break; | |
163cac06 | 1141 | } |
b22ead2a MB |
1142 | |
1143 | if (ret < 0) | |
f7d41ae8 JN |
1144 | dev_err(w->dapm->dev, |
1145 | "Failed to apply widget power: %d\n", ret); | |
6ea31b9f | 1146 | } |
b22ead2a MB |
1147 | |
1148 | if (!list_empty(&pending)) | |
28e86808 | 1149 | dapm_seq_run_coalesced(cur_dapm, &pending); |
474b62d6 MB |
1150 | |
1151 | if (cur_dapm && cur_dapm->seq_notifier) { | |
1152 | for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++) | |
1153 | if (sort[i] == cur_sort) | |
1154 | cur_dapm->seq_notifier(cur_dapm, | |
f85a9e0d | 1155 | i, cur_subseq); |
474b62d6 | 1156 | } |
42aa3418 MB |
1157 | } |
1158 | ||
97404f2e MB |
1159 | static void dapm_widget_update(struct snd_soc_dapm_context *dapm) |
1160 | { | |
1161 | struct snd_soc_dapm_update *update = dapm->update; | |
1162 | struct snd_soc_dapm_widget *w; | |
1163 | int ret; | |
1164 | ||
1165 | if (!update) | |
1166 | return; | |
1167 | ||
1168 | w = update->widget; | |
1169 | ||
1170 | if (w->event && | |
1171 | (w->event_flags & SND_SOC_DAPM_PRE_REG)) { | |
1172 | ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG); | |
1173 | if (ret != 0) | |
1174 | pr_err("%s DAPM pre-event failed: %d\n", | |
1175 | w->name, ret); | |
1176 | } | |
1177 | ||
1178 | ret = snd_soc_update_bits(w->codec, update->reg, update->mask, | |
1179 | update->val); | |
1180 | if (ret < 0) | |
1181 | pr_err("%s DAPM update failed: %d\n", w->name, ret); | |
1182 | ||
1183 | if (w->event && | |
1184 | (w->event_flags & SND_SOC_DAPM_POST_REG)) { | |
1185 | ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG); | |
1186 | if (ret != 0) | |
1187 | pr_err("%s DAPM post-event failed: %d\n", | |
1188 | w->name, ret); | |
1189 | } | |
1190 | } | |
1191 | ||
9d0624a7 MB |
1192 | /* Async callback run prior to DAPM sequences - brings to _PREPARE if |
1193 | * they're changing state. | |
1194 | */ | |
1195 | static void dapm_pre_sequence_async(void *data, async_cookie_t cookie) | |
1196 | { | |
1197 | struct snd_soc_dapm_context *d = data; | |
1198 | int ret; | |
1199 | ||
56fba41f MB |
1200 | /* If we're off and we're not supposed to be go into STANDBY */ |
1201 | if (d->bias_level == SND_SOC_BIAS_OFF && | |
1202 | d->target_bias_level != SND_SOC_BIAS_OFF) { | |
9d0624a7 MB |
1203 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY); |
1204 | if (ret != 0) | |
1205 | dev_err(d->dev, | |
1206 | "Failed to turn on bias: %d\n", ret); | |
1207 | } | |
1208 | ||
56fba41f MB |
1209 | /* Prepare for a STADDBY->ON or ON->STANDBY transition */ |
1210 | if (d->bias_level != d->target_bias_level) { | |
9d0624a7 MB |
1211 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE); |
1212 | if (ret != 0) | |
1213 | dev_err(d->dev, | |
1214 | "Failed to prepare bias: %d\n", ret); | |
1215 | } | |
1216 | } | |
1217 | ||
1218 | /* Async callback run prior to DAPM sequences - brings to their final | |
1219 | * state. | |
1220 | */ | |
1221 | static void dapm_post_sequence_async(void *data, async_cookie_t cookie) | |
1222 | { | |
1223 | struct snd_soc_dapm_context *d = data; | |
1224 | int ret; | |
1225 | ||
1226 | /* If we just powered the last thing off drop to standby bias */ | |
56fba41f MB |
1227 | if (d->bias_level == SND_SOC_BIAS_PREPARE && |
1228 | (d->target_bias_level == SND_SOC_BIAS_STANDBY || | |
1229 | d->target_bias_level == SND_SOC_BIAS_OFF)) { | |
9d0624a7 MB |
1230 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY); |
1231 | if (ret != 0) | |
1232 | dev_err(d->dev, "Failed to apply standby bias: %d\n", | |
1233 | ret); | |
1234 | } | |
97404f2e | 1235 | |
9d0624a7 | 1236 | /* If we're in standby and can support bias off then do that */ |
56fba41f MB |
1237 | if (d->bias_level == SND_SOC_BIAS_STANDBY && |
1238 | d->target_bias_level == SND_SOC_BIAS_OFF) { | |
9d0624a7 MB |
1239 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF); |
1240 | if (ret != 0) | |
1241 | dev_err(d->dev, "Failed to turn off bias: %d\n", ret); | |
1242 | } | |
1243 | ||
1244 | /* If we just powered up then move to active bias */ | |
56fba41f MB |
1245 | if (d->bias_level == SND_SOC_BIAS_PREPARE && |
1246 | d->target_bias_level == SND_SOC_BIAS_ON) { | |
9d0624a7 MB |
1247 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON); |
1248 | if (ret != 0) | |
1249 | dev_err(d->dev, "Failed to apply active bias: %d\n", | |
1250 | ret); | |
1251 | } | |
1252 | } | |
97404f2e | 1253 | |
fe4fda5d MB |
1254 | static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget *peer, |
1255 | bool power, bool connect) | |
1256 | { | |
1257 | /* If a connection is being made or broken then that update | |
1258 | * will have marked the peer dirty, otherwise the widgets are | |
1259 | * not connected and this update has no impact. */ | |
1260 | if (!connect) | |
1261 | return; | |
1262 | ||
1263 | /* If the peer is already in the state we're moving to then we | |
1264 | * won't have an impact on it. */ | |
1265 | if (power != peer->power) | |
75c1f891 | 1266 | dapm_mark_dirty(peer, "peer state change"); |
fe4fda5d MB |
1267 | } |
1268 | ||
05623c43 MB |
1269 | static void dapm_widget_set_power(struct snd_soc_dapm_widget *w, bool power, |
1270 | struct list_head *up_list, | |
1271 | struct list_head *down_list) | |
1272 | { | |
db432b41 MB |
1273 | struct snd_soc_dapm_path *path; |
1274 | ||
05623c43 MB |
1275 | if (w->power == power) |
1276 | return; | |
1277 | ||
1278 | trace_snd_soc_dapm_widget_power(w, power); | |
1279 | ||
db432b41 | 1280 | /* If we changed our power state perhaps our neigbours changed |
fe4fda5d | 1281 | * also. |
db432b41 MB |
1282 | */ |
1283 | list_for_each_entry(path, &w->sources, list_sink) { | |
1284 | if (path->source) { | |
fe4fda5d MB |
1285 | dapm_widget_set_peer_power(path->source, power, |
1286 | path->connect); | |
db432b41 MB |
1287 | } |
1288 | } | |
f3bf3e45 MB |
1289 | switch (w->id) { |
1290 | case snd_soc_dapm_supply: | |
1291 | /* Supplies can't affect their outputs, only their inputs */ | |
1292 | break; | |
1293 | default: | |
1294 | list_for_each_entry(path, &w->sinks, list_source) { | |
1295 | if (path->sink) { | |
1296 | dapm_widget_set_peer_power(path->sink, power, | |
1297 | path->connect); | |
1298 | } | |
db432b41 | 1299 | } |
f3bf3e45 | 1300 | break; |
db432b41 MB |
1301 | } |
1302 | ||
05623c43 MB |
1303 | if (power) |
1304 | dapm_seq_insert(w, up_list, true); | |
1305 | else | |
1306 | dapm_seq_insert(w, down_list, false); | |
1307 | ||
1308 | w->power = power; | |
1309 | } | |
1310 | ||
7c81beb0 MB |
1311 | static void dapm_power_one_widget(struct snd_soc_dapm_widget *w, |
1312 | struct list_head *up_list, | |
1313 | struct list_head *down_list) | |
1314 | { | |
7c81beb0 MB |
1315 | int power; |
1316 | ||
1317 | switch (w->id) { | |
1318 | case snd_soc_dapm_pre: | |
1319 | dapm_seq_insert(w, down_list, false); | |
1320 | break; | |
1321 | case snd_soc_dapm_post: | |
1322 | dapm_seq_insert(w, up_list, true); | |
1323 | break; | |
1324 | ||
1325 | default: | |
d805002b | 1326 | power = dapm_widget_power_check(w); |
7c81beb0 | 1327 | |
05623c43 | 1328 | dapm_widget_set_power(w, power, up_list, down_list); |
7c81beb0 MB |
1329 | break; |
1330 | } | |
1331 | } | |
1332 | ||
2b97eabc RP |
1333 | /* |
1334 | * Scan each dapm widget for complete audio path. | |
1335 | * A complete path is a route that has valid endpoints i.e.:- | |
1336 | * | |
1337 | * o DAC to output pin. | |
1338 | * o Input Pin to ADC. | |
1339 | * o Input pin to Output pin (bypass, sidetone) | |
1340 | * o DAC to ADC (loopback). | |
1341 | */ | |
ce6120cc | 1342 | static int dapm_power_widgets(struct snd_soc_dapm_context *dapm, int event) |
2b97eabc | 1343 | { |
12ea2c78 | 1344 | struct snd_soc_card *card = dapm->card; |
2b97eabc | 1345 | struct snd_soc_dapm_widget *w; |
7be31be8 | 1346 | struct snd_soc_dapm_context *d; |
291f3bbc MB |
1347 | LIST_HEAD(up_list); |
1348 | LIST_HEAD(down_list); | |
9d0624a7 | 1349 | LIST_HEAD(async_domain); |
56fba41f | 1350 | enum snd_soc_bias_level bias; |
6d3ddc81 | 1351 | |
84e90930 MB |
1352 | trace_snd_soc_dapm_start(card); |
1353 | ||
56fba41f MB |
1354 | list_for_each_entry(d, &card->dapm_list, list) { |
1355 | if (d->n_widgets || d->codec == NULL) { | |
1356 | if (d->idle_bias_off) | |
1357 | d->target_bias_level = SND_SOC_BIAS_OFF; | |
1358 | else | |
1359 | d->target_bias_level = SND_SOC_BIAS_STANDBY; | |
1360 | } | |
1361 | } | |
7be31be8 | 1362 | |
de02d078 MB |
1363 | memset(&card->dapm_stats, 0, sizeof(card->dapm_stats)); |
1364 | ||
9b8a83b2 MB |
1365 | list_for_each_entry(w, &card->widgets, list) { |
1366 | w->power_checked = false; | |
024dc078 MB |
1367 | w->inputs = -1; |
1368 | w->outputs = -1; | |
9b8a83b2 MB |
1369 | } |
1370 | ||
6d3ddc81 | 1371 | /* Check which widgets we need to power and store them in |
db432b41 MB |
1372 | * lists indicating if they should be powered up or down. We |
1373 | * only check widgets that have been flagged as dirty but note | |
1374 | * that new widgets may be added to the dirty list while we | |
1375 | * iterate. | |
6d3ddc81 | 1376 | */ |
db432b41 | 1377 | list_for_each_entry(w, &card->dapm_dirty, dirty) { |
7c81beb0 | 1378 | dapm_power_one_widget(w, &up_list, &down_list); |
2b97eabc RP |
1379 | } |
1380 | ||
f9de6d74 | 1381 | list_for_each_entry(w, &card->widgets, list) { |
db432b41 MB |
1382 | list_del_init(&w->dirty); |
1383 | ||
f9de6d74 MB |
1384 | if (w->power) { |
1385 | d = w->dapm; | |
1386 | ||
1387 | /* Supplies and micbiases only bring the | |
1388 | * context up to STANDBY as unless something | |
1389 | * else is active and passing audio they | |
1390 | * generally don't require full power. | |
1391 | */ | |
1392 | switch (w->id) { | |
1393 | case snd_soc_dapm_supply: | |
1394 | case snd_soc_dapm_micbias: | |
1395 | if (d->target_bias_level < SND_SOC_BIAS_STANDBY) | |
1396 | d->target_bias_level = SND_SOC_BIAS_STANDBY; | |
1397 | break; | |
1398 | default: | |
1399 | d->target_bias_level = SND_SOC_BIAS_ON; | |
1400 | break; | |
1401 | } | |
1402 | } | |
1403 | ||
1404 | } | |
1405 | ||
b14b76a5 MB |
1406 | /* If there are no DAPM widgets then try to figure out power from the |
1407 | * event type. | |
1408 | */ | |
97c866de | 1409 | if (!dapm->n_widgets) { |
b14b76a5 MB |
1410 | switch (event) { |
1411 | case SND_SOC_DAPM_STREAM_START: | |
1412 | case SND_SOC_DAPM_STREAM_RESUME: | |
56fba41f | 1413 | dapm->target_bias_level = SND_SOC_BIAS_ON; |
b14b76a5 | 1414 | break; |
862af8ad | 1415 | case SND_SOC_DAPM_STREAM_STOP: |
56fba41f MB |
1416 | if (dapm->codec->active) |
1417 | dapm->target_bias_level = SND_SOC_BIAS_ON; | |
1418 | else | |
1419 | dapm->target_bias_level = SND_SOC_BIAS_STANDBY; | |
862af8ad | 1420 | break; |
50b6bce5 | 1421 | case SND_SOC_DAPM_STREAM_SUSPEND: |
56fba41f | 1422 | dapm->target_bias_level = SND_SOC_BIAS_STANDBY; |
50b6bce5 | 1423 | break; |
b14b76a5 | 1424 | case SND_SOC_DAPM_STREAM_NOP: |
56fba41f | 1425 | dapm->target_bias_level = dapm->bias_level; |
50b6bce5 | 1426 | break; |
b14b76a5 MB |
1427 | default: |
1428 | break; | |
1429 | } | |
1430 | } | |
1431 | ||
85a843c5 MB |
1432 | /* Force all contexts in the card to the same bias state if |
1433 | * they're not ground referenced. | |
1434 | */ | |
56fba41f | 1435 | bias = SND_SOC_BIAS_OFF; |
52ba67bf | 1436 | list_for_each_entry(d, &card->dapm_list, list) |
56fba41f MB |
1437 | if (d->target_bias_level > bias) |
1438 | bias = d->target_bias_level; | |
52ba67bf | 1439 | list_for_each_entry(d, &card->dapm_list, list) |
85a843c5 MB |
1440 | if (!d->idle_bias_off) |
1441 | d->target_bias_level = bias; | |
52ba67bf | 1442 | |
de02d078 | 1443 | trace_snd_soc_dapm_walk_done(card); |
52ba67bf | 1444 | |
9d0624a7 MB |
1445 | /* Run all the bias changes in parallel */ |
1446 | list_for_each_entry(d, &dapm->card->dapm_list, list) | |
1447 | async_schedule_domain(dapm_pre_sequence_async, d, | |
1448 | &async_domain); | |
1449 | async_synchronize_full_domain(&async_domain); | |
452c5eaa | 1450 | |
6d3ddc81 | 1451 | /* Power down widgets first; try to avoid amplifying pops. */ |
828a842f | 1452 | dapm_seq_run(dapm, &down_list, event, false); |
2b97eabc | 1453 | |
97404f2e MB |
1454 | dapm_widget_update(dapm); |
1455 | ||
6d3ddc81 | 1456 | /* Now power up. */ |
828a842f | 1457 | dapm_seq_run(dapm, &up_list, event, true); |
2b97eabc | 1458 | |
9d0624a7 MB |
1459 | /* Run all the bias changes in parallel */ |
1460 | list_for_each_entry(d, &dapm->card->dapm_list, list) | |
1461 | async_schedule_domain(dapm_post_sequence_async, d, | |
1462 | &async_domain); | |
1463 | async_synchronize_full_domain(&async_domain); | |
452c5eaa | 1464 | |
fd8d3bc0 JN |
1465 | pop_dbg(dapm->dev, card->pop_time, |
1466 | "DAPM sequencing finished, waiting %dms\n", card->pop_time); | |
3a45b867 | 1467 | pop_wait(card->pop_time); |
cb507e7e | 1468 | |
84e90930 MB |
1469 | trace_snd_soc_dapm_done(card); |
1470 | ||
42aa3418 | 1471 | return 0; |
2b97eabc RP |
1472 | } |
1473 | ||
79fb9387 MB |
1474 | #ifdef CONFIG_DEBUG_FS |
1475 | static int dapm_widget_power_open_file(struct inode *inode, struct file *file) | |
1476 | { | |
1477 | file->private_data = inode->i_private; | |
1478 | return 0; | |
1479 | } | |
1480 | ||
1481 | static ssize_t dapm_widget_power_read_file(struct file *file, | |
1482 | char __user *user_buf, | |
1483 | size_t count, loff_t *ppos) | |
1484 | { | |
1485 | struct snd_soc_dapm_widget *w = file->private_data; | |
1486 | char *buf; | |
1487 | int in, out; | |
1488 | ssize_t ret; | |
1489 | struct snd_soc_dapm_path *p = NULL; | |
1490 | ||
1491 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); | |
1492 | if (!buf) | |
1493 | return -ENOMEM; | |
1494 | ||
1495 | in = is_connected_input_ep(w); | |
ce6120cc | 1496 | dapm_clear_walk(w->dapm); |
79fb9387 | 1497 | out = is_connected_output_ep(w); |
ce6120cc | 1498 | dapm_clear_walk(w->dapm); |
79fb9387 | 1499 | |
d033c36a | 1500 | ret = snprintf(buf, PAGE_SIZE, "%s: %s in %d out %d", |
79fb9387 MB |
1501 | w->name, w->power ? "On" : "Off", in, out); |
1502 | ||
d033c36a MB |
1503 | if (w->reg >= 0) |
1504 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
1505 | " - R%d(0x%x) bit %d", | |
1506 | w->reg, w->reg, w->shift); | |
1507 | ||
1508 | ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n"); | |
1509 | ||
3eef08ba MB |
1510 | if (w->sname) |
1511 | ret += snprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n", | |
1512 | w->sname, | |
1513 | w->active ? "active" : "inactive"); | |
79fb9387 MB |
1514 | |
1515 | list_for_each_entry(p, &w->sources, list_sink) { | |
215edda3 MB |
1516 | if (p->connected && !p->connected(w, p->sink)) |
1517 | continue; | |
1518 | ||
79fb9387 MB |
1519 | if (p->connect) |
1520 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
67f5ed6e | 1521 | " in \"%s\" \"%s\"\n", |
79fb9387 MB |
1522 | p->name ? p->name : "static", |
1523 | p->source->name); | |
1524 | } | |
1525 | list_for_each_entry(p, &w->sinks, list_source) { | |
215edda3 MB |
1526 | if (p->connected && !p->connected(w, p->sink)) |
1527 | continue; | |
1528 | ||
79fb9387 MB |
1529 | if (p->connect) |
1530 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
67f5ed6e | 1531 | " out \"%s\" \"%s\"\n", |
79fb9387 MB |
1532 | p->name ? p->name : "static", |
1533 | p->sink->name); | |
1534 | } | |
1535 | ||
1536 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); | |
1537 | ||
1538 | kfree(buf); | |
1539 | return ret; | |
1540 | } | |
1541 | ||
1542 | static const struct file_operations dapm_widget_power_fops = { | |
1543 | .open = dapm_widget_power_open_file, | |
1544 | .read = dapm_widget_power_read_file, | |
6038f373 | 1545 | .llseek = default_llseek, |
79fb9387 MB |
1546 | }; |
1547 | ||
ef49e4fa MB |
1548 | static int dapm_bias_open_file(struct inode *inode, struct file *file) |
1549 | { | |
1550 | file->private_data = inode->i_private; | |
1551 | return 0; | |
1552 | } | |
1553 | ||
1554 | static ssize_t dapm_bias_read_file(struct file *file, char __user *user_buf, | |
1555 | size_t count, loff_t *ppos) | |
1556 | { | |
1557 | struct snd_soc_dapm_context *dapm = file->private_data; | |
1558 | char *level; | |
1559 | ||
1560 | switch (dapm->bias_level) { | |
1561 | case SND_SOC_BIAS_ON: | |
1562 | level = "On\n"; | |
1563 | break; | |
1564 | case SND_SOC_BIAS_PREPARE: | |
1565 | level = "Prepare\n"; | |
1566 | break; | |
1567 | case SND_SOC_BIAS_STANDBY: | |
1568 | level = "Standby\n"; | |
1569 | break; | |
1570 | case SND_SOC_BIAS_OFF: | |
1571 | level = "Off\n"; | |
1572 | break; | |
1573 | default: | |
1574 | BUG(); | |
1575 | level = "Unknown\n"; | |
1576 | break; | |
1577 | } | |
1578 | ||
1579 | return simple_read_from_buffer(user_buf, count, ppos, level, | |
1580 | strlen(level)); | |
1581 | } | |
1582 | ||
1583 | static const struct file_operations dapm_bias_fops = { | |
1584 | .open = dapm_bias_open_file, | |
1585 | .read = dapm_bias_read_file, | |
1586 | .llseek = default_llseek, | |
1587 | }; | |
1588 | ||
8eecaf62 LPC |
1589 | void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm, |
1590 | struct dentry *parent) | |
79fb9387 | 1591 | { |
79fb9387 MB |
1592 | struct dentry *d; |
1593 | ||
8eecaf62 LPC |
1594 | dapm->debugfs_dapm = debugfs_create_dir("dapm", parent); |
1595 | ||
1596 | if (!dapm->debugfs_dapm) { | |
1597 | printk(KERN_WARNING | |
1598 | "Failed to create DAPM debugfs directory\n"); | |
79fb9387 | 1599 | return; |
8eecaf62 | 1600 | } |
79fb9387 | 1601 | |
ef49e4fa MB |
1602 | d = debugfs_create_file("bias_level", 0444, |
1603 | dapm->debugfs_dapm, dapm, | |
1604 | &dapm_bias_fops); | |
1605 | if (!d) | |
1606 | dev_warn(dapm->dev, | |
1607 | "ASoC: Failed to create bias level debugfs file\n"); | |
d5d1e0be | 1608 | } |
ef49e4fa | 1609 | |
d5d1e0be LPC |
1610 | static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w) |
1611 | { | |
1612 | struct snd_soc_dapm_context *dapm = w->dapm; | |
1613 | struct dentry *d; | |
79fb9387 | 1614 | |
d5d1e0be LPC |
1615 | if (!dapm->debugfs_dapm || !w->name) |
1616 | return; | |
1617 | ||
1618 | d = debugfs_create_file(w->name, 0444, | |
1619 | dapm->debugfs_dapm, w, | |
1620 | &dapm_widget_power_fops); | |
1621 | if (!d) | |
1622 | dev_warn(w->dapm->dev, | |
1623 | "ASoC: Failed to create %s debugfs file\n", | |
1624 | w->name); | |
79fb9387 | 1625 | } |
d5d1e0be | 1626 | |
6c45e126 LPC |
1627 | static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm) |
1628 | { | |
1629 | debugfs_remove_recursive(dapm->debugfs_dapm); | |
1630 | } | |
1631 | ||
79fb9387 | 1632 | #else |
8eecaf62 LPC |
1633 | void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm, |
1634 | struct dentry *parent) | |
79fb9387 MB |
1635 | { |
1636 | } | |
d5d1e0be LPC |
1637 | |
1638 | static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w) | |
1639 | { | |
1640 | } | |
1641 | ||
6c45e126 LPC |
1642 | static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm) |
1643 | { | |
1644 | } | |
1645 | ||
79fb9387 MB |
1646 | #endif |
1647 | ||
2b97eabc | 1648 | /* test and update the power status of a mux widget */ |
d9c96cf3 | 1649 | static int dapm_mux_update_power(struct snd_soc_dapm_widget *widget, |
3a65577d MB |
1650 | struct snd_kcontrol *kcontrol, int change, |
1651 | int mux, struct soc_enum *e) | |
2b97eabc RP |
1652 | { |
1653 | struct snd_soc_dapm_path *path; | |
1654 | int found = 0; | |
1655 | ||
eff317d0 | 1656 | if (widget->id != snd_soc_dapm_mux && |
24ff33ac | 1657 | widget->id != snd_soc_dapm_virt_mux && |
eff317d0 | 1658 | widget->id != snd_soc_dapm_value_mux) |
2b97eabc RP |
1659 | return -ENODEV; |
1660 | ||
3a65577d | 1661 | if (!change) |
2b97eabc RP |
1662 | return 0; |
1663 | ||
1664 | /* find dapm widget path assoc with kcontrol */ | |
8ddab3f5 | 1665 | list_for_each_entry(path, &widget->dapm->card->paths, list) { |
2b97eabc RP |
1666 | if (path->kcontrol != kcontrol) |
1667 | continue; | |
1668 | ||
cb01e2b9 | 1669 | if (!path->name || !e->texts[mux]) |
2b97eabc RP |
1670 | continue; |
1671 | ||
1672 | found = 1; | |
1673 | /* we now need to match the string in the enum to the path */ | |
db432b41 | 1674 | if (!(strcmp(path->name, e->texts[mux]))) { |
2b97eabc | 1675 | path->connect = 1; /* new connection */ |
75c1f891 | 1676 | dapm_mark_dirty(path->source, "mux connection"); |
db432b41 MB |
1677 | } else { |
1678 | if (path->connect) | |
75c1f891 MB |
1679 | dapm_mark_dirty(path->source, |
1680 | "mux disconnection"); | |
2b97eabc | 1681 | path->connect = 0; /* old connection must be powered down */ |
db432b41 | 1682 | } |
2b97eabc RP |
1683 | } |
1684 | ||
db432b41 | 1685 | if (found) { |
75c1f891 | 1686 | dapm_mark_dirty(widget, "mux change"); |
ce6120cc | 1687 | dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP); |
db432b41 | 1688 | } |
2b97eabc RP |
1689 | |
1690 | return 0; | |
1691 | } | |
2b97eabc | 1692 | |
1b075e3f | 1693 | /* test and update the power status of a mixer or switch widget */ |
d9c96cf3 | 1694 | static int dapm_mixer_update_power(struct snd_soc_dapm_widget *widget, |
283375ce | 1695 | struct snd_kcontrol *kcontrol, int connect) |
2b97eabc RP |
1696 | { |
1697 | struct snd_soc_dapm_path *path; | |
1698 | int found = 0; | |
1699 | ||
1b075e3f | 1700 | if (widget->id != snd_soc_dapm_mixer && |
ca9c1aae | 1701 | widget->id != snd_soc_dapm_mixer_named_ctl && |
1b075e3f | 1702 | widget->id != snd_soc_dapm_switch) |
2b97eabc RP |
1703 | return -ENODEV; |
1704 | ||
2b97eabc | 1705 | /* find dapm widget path assoc with kcontrol */ |
8ddab3f5 | 1706 | list_for_each_entry(path, &widget->dapm->card->paths, list) { |
2b97eabc RP |
1707 | if (path->kcontrol != kcontrol) |
1708 | continue; | |
1709 | ||
1710 | /* found, now check type */ | |
1711 | found = 1; | |
283375ce | 1712 | path->connect = connect; |
75c1f891 | 1713 | dapm_mark_dirty(path->source, "mixer connection"); |
2b97eabc RP |
1714 | } |
1715 | ||
db432b41 | 1716 | if (found) { |
75c1f891 | 1717 | dapm_mark_dirty(widget, "mixer update"); |
ce6120cc | 1718 | dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP); |
db432b41 | 1719 | } |
2b97eabc RP |
1720 | |
1721 | return 0; | |
1722 | } | |
2b97eabc RP |
1723 | |
1724 | /* show dapm widget status in sys fs */ | |
1725 | static ssize_t dapm_widget_show(struct device *dev, | |
1726 | struct device_attribute *attr, char *buf) | |
1727 | { | |
f0fba2ad LG |
1728 | struct snd_soc_pcm_runtime *rtd = |
1729 | container_of(dev, struct snd_soc_pcm_runtime, dev); | |
1730 | struct snd_soc_codec *codec =rtd->codec; | |
2b97eabc RP |
1731 | struct snd_soc_dapm_widget *w; |
1732 | int count = 0; | |
1733 | char *state = "not set"; | |
1734 | ||
97c866de JN |
1735 | list_for_each_entry(w, &codec->card->widgets, list) { |
1736 | if (w->dapm != &codec->dapm) | |
1737 | continue; | |
2b97eabc RP |
1738 | |
1739 | /* only display widgets that burnm power */ | |
1740 | switch (w->id) { | |
1741 | case snd_soc_dapm_hp: | |
1742 | case snd_soc_dapm_mic: | |
1743 | case snd_soc_dapm_spk: | |
1744 | case snd_soc_dapm_line: | |
1745 | case snd_soc_dapm_micbias: | |
1746 | case snd_soc_dapm_dac: | |
1747 | case snd_soc_dapm_adc: | |
1748 | case snd_soc_dapm_pga: | |
d88429a6 | 1749 | case snd_soc_dapm_out_drv: |
2b97eabc | 1750 | case snd_soc_dapm_mixer: |
ca9c1aae | 1751 | case snd_soc_dapm_mixer_named_ctl: |
246d0a17 | 1752 | case snd_soc_dapm_supply: |
2b97eabc RP |
1753 | if (w->name) |
1754 | count += sprintf(buf + count, "%s: %s\n", | |
1755 | w->name, w->power ? "On":"Off"); | |
1756 | break; | |
1757 | default: | |
1758 | break; | |
1759 | } | |
1760 | } | |
1761 | ||
ce6120cc | 1762 | switch (codec->dapm.bias_level) { |
0be9898a MB |
1763 | case SND_SOC_BIAS_ON: |
1764 | state = "On"; | |
2b97eabc | 1765 | break; |
0be9898a MB |
1766 | case SND_SOC_BIAS_PREPARE: |
1767 | state = "Prepare"; | |
2b97eabc | 1768 | break; |
0be9898a MB |
1769 | case SND_SOC_BIAS_STANDBY: |
1770 | state = "Standby"; | |
2b97eabc | 1771 | break; |
0be9898a MB |
1772 | case SND_SOC_BIAS_OFF: |
1773 | state = "Off"; | |
2b97eabc RP |
1774 | break; |
1775 | } | |
1776 | count += sprintf(buf + count, "PM State: %s\n", state); | |
1777 | ||
1778 | return count; | |
1779 | } | |
1780 | ||
1781 | static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL); | |
1782 | ||
1783 | int snd_soc_dapm_sys_add(struct device *dev) | |
1784 | { | |
12ef193d | 1785 | return device_create_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1786 | } |
1787 | ||
1788 | static void snd_soc_dapm_sys_remove(struct device *dev) | |
1789 | { | |
aef90843 | 1790 | device_remove_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1791 | } |
1792 | ||
1793 | /* free all dapm widgets and resources */ | |
ce6120cc | 1794 | static void dapm_free_widgets(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
1795 | { |
1796 | struct snd_soc_dapm_widget *w, *next_w; | |
1797 | struct snd_soc_dapm_path *p, *next_p; | |
1798 | ||
97c866de JN |
1799 | list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) { |
1800 | if (w->dapm != dapm) | |
1801 | continue; | |
2b97eabc | 1802 | list_del(&w->list); |
8ddab3f5 JN |
1803 | /* |
1804 | * remove source and sink paths associated to this widget. | |
1805 | * While removing the path, remove reference to it from both | |
1806 | * source and sink widgets so that path is removed only once. | |
1807 | */ | |
1808 | list_for_each_entry_safe(p, next_p, &w->sources, list_sink) { | |
1809 | list_del(&p->list_sink); | |
1810 | list_del(&p->list_source); | |
1811 | list_del(&p->list); | |
1812 | kfree(p->long_name); | |
1813 | kfree(p); | |
1814 | } | |
1815 | list_for_each_entry_safe(p, next_p, &w->sinks, list_source) { | |
1816 | list_del(&p->list_sink); | |
1817 | list_del(&p->list_source); | |
1818 | list_del(&p->list); | |
1819 | kfree(p->long_name); | |
1820 | kfree(p); | |
1821 | } | |
fad59888 | 1822 | kfree(w->kcontrols); |
ead9b919 | 1823 | kfree(w->name); |
2b97eabc RP |
1824 | kfree(w); |
1825 | } | |
2b97eabc RP |
1826 | } |
1827 | ||
91a5fca4 LPC |
1828 | static struct snd_soc_dapm_widget *dapm_find_widget( |
1829 | struct snd_soc_dapm_context *dapm, const char *pin, | |
1830 | bool search_other_contexts) | |
a5302181 LG |
1831 | { |
1832 | struct snd_soc_dapm_widget *w; | |
91a5fca4 | 1833 | struct snd_soc_dapm_widget *fallback = NULL; |
a5302181 | 1834 | |
97c866de | 1835 | list_for_each_entry(w, &dapm->card->widgets, list) { |
a5302181 | 1836 | if (!strcmp(w->name, pin)) { |
91a5fca4 LPC |
1837 | if (w->dapm == dapm) |
1838 | return w; | |
1839 | else | |
1840 | fallback = w; | |
a5302181 LG |
1841 | } |
1842 | } | |
1843 | ||
91a5fca4 LPC |
1844 | if (search_other_contexts) |
1845 | return fallback; | |
1846 | ||
1847 | return NULL; | |
1848 | } | |
1849 | ||
1850 | static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm, | |
1851 | const char *pin, int status) | |
1852 | { | |
1853 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); | |
1854 | ||
1855 | if (!w) { | |
1856 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); | |
1857 | return -EINVAL; | |
0d86733c MB |
1858 | } |
1859 | ||
91a5fca4 LPC |
1860 | w->connected = status; |
1861 | if (status == 0) | |
1862 | w->force = 0; | |
75c1f891 | 1863 | dapm_mark_dirty(w, "pin configuration"); |
91a5fca4 LPC |
1864 | |
1865 | return 0; | |
a5302181 LG |
1866 | } |
1867 | ||
2b97eabc | 1868 | /** |
a5302181 | 1869 | * snd_soc_dapm_sync - scan and power dapm paths |
ce6120cc | 1870 | * @dapm: DAPM context |
2b97eabc RP |
1871 | * |
1872 | * Walks all dapm audio paths and powers widgets according to their | |
1873 | * stream or path usage. | |
1874 | * | |
1875 | * Returns 0 for success. | |
1876 | */ | |
ce6120cc | 1877 | int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm) |
2b97eabc | 1878 | { |
4f4c0072 MB |
1879 | /* |
1880 | * Suppress early reports (eg, jacks syncing their state) to avoid | |
1881 | * silly DAPM runs during card startup. | |
1882 | */ | |
1883 | if (!dapm->card || !dapm->card->instantiated) | |
1884 | return 0; | |
1885 | ||
ce6120cc | 1886 | return dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc | 1887 | } |
a5302181 | 1888 | EXPORT_SYMBOL_GPL(snd_soc_dapm_sync); |
2b97eabc | 1889 | |
ce6120cc | 1890 | static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm, |
215edda3 | 1891 | const struct snd_soc_dapm_route *route) |
2b97eabc RP |
1892 | { |
1893 | struct snd_soc_dapm_path *path; | |
1894 | struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w; | |
97c866de | 1895 | struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL; |
ead9b919 | 1896 | const char *sink; |
215edda3 | 1897 | const char *control = route->control; |
ead9b919 JN |
1898 | const char *source; |
1899 | char prefixed_sink[80]; | |
1900 | char prefixed_source[80]; | |
2b97eabc RP |
1901 | int ret = 0; |
1902 | ||
88e8b9a8 | 1903 | if (dapm->codec && dapm->codec->name_prefix) { |
ead9b919 JN |
1904 | snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s", |
1905 | dapm->codec->name_prefix, route->sink); | |
1906 | sink = prefixed_sink; | |
1907 | snprintf(prefixed_source, sizeof(prefixed_source), "%s %s", | |
1908 | dapm->codec->name_prefix, route->source); | |
1909 | source = prefixed_source; | |
1910 | } else { | |
1911 | sink = route->sink; | |
1912 | source = route->source; | |
1913 | } | |
1914 | ||
97c866de JN |
1915 | /* |
1916 | * find src and dest widgets over all widgets but favor a widget from | |
1917 | * current DAPM context | |
1918 | */ | |
1919 | list_for_each_entry(w, &dapm->card->widgets, list) { | |
2b97eabc | 1920 | if (!wsink && !(strcmp(w->name, sink))) { |
97c866de JN |
1921 | wtsink = w; |
1922 | if (w->dapm == dapm) | |
1923 | wsink = w; | |
2b97eabc RP |
1924 | continue; |
1925 | } | |
1926 | if (!wsource && !(strcmp(w->name, source))) { | |
97c866de JN |
1927 | wtsource = w; |
1928 | if (w->dapm == dapm) | |
1929 | wsource = w; | |
2b97eabc RP |
1930 | } |
1931 | } | |
97c866de JN |
1932 | /* use widget from another DAPM context if not found from this */ |
1933 | if (!wsink) | |
1934 | wsink = wtsink; | |
1935 | if (!wsource) | |
1936 | wsource = wtsource; | |
2b97eabc RP |
1937 | |
1938 | if (wsource == NULL || wsink == NULL) | |
1939 | return -ENODEV; | |
1940 | ||
1941 | path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL); | |
1942 | if (!path) | |
1943 | return -ENOMEM; | |
1944 | ||
1945 | path->source = wsource; | |
1946 | path->sink = wsink; | |
215edda3 | 1947 | path->connected = route->connected; |
2b97eabc RP |
1948 | INIT_LIST_HEAD(&path->list); |
1949 | INIT_LIST_HEAD(&path->list_source); | |
1950 | INIT_LIST_HEAD(&path->list_sink); | |
1951 | ||
1952 | /* check for external widgets */ | |
1953 | if (wsink->id == snd_soc_dapm_input) { | |
1954 | if (wsource->id == snd_soc_dapm_micbias || | |
1955 | wsource->id == snd_soc_dapm_mic || | |
087d53ab RC |
1956 | wsource->id == snd_soc_dapm_line || |
1957 | wsource->id == snd_soc_dapm_output) | |
2b97eabc RP |
1958 | wsink->ext = 1; |
1959 | } | |
1960 | if (wsource->id == snd_soc_dapm_output) { | |
1961 | if (wsink->id == snd_soc_dapm_spk || | |
1962 | wsink->id == snd_soc_dapm_hp || | |
1e39221e SF |
1963 | wsink->id == snd_soc_dapm_line || |
1964 | wsink->id == snd_soc_dapm_input) | |
2b97eabc RP |
1965 | wsource->ext = 1; |
1966 | } | |
1967 | ||
1968 | /* connect static paths */ | |
1969 | if (control == NULL) { | |
8ddab3f5 | 1970 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
1971 | list_add(&path->list_sink, &wsink->sources); |
1972 | list_add(&path->list_source, &wsource->sinks); | |
1973 | path->connect = 1; | |
1974 | return 0; | |
1975 | } | |
1976 | ||
1977 | /* connect dynamic paths */ | |
dc2bea61 | 1978 | switch (wsink->id) { |
2b97eabc RP |
1979 | case snd_soc_dapm_adc: |
1980 | case snd_soc_dapm_dac: | |
1981 | case snd_soc_dapm_pga: | |
d88429a6 | 1982 | case snd_soc_dapm_out_drv: |
2b97eabc RP |
1983 | case snd_soc_dapm_input: |
1984 | case snd_soc_dapm_output: | |
1985 | case snd_soc_dapm_micbias: | |
1986 | case snd_soc_dapm_vmid: | |
1987 | case snd_soc_dapm_pre: | |
1988 | case snd_soc_dapm_post: | |
246d0a17 | 1989 | case snd_soc_dapm_supply: |
010ff262 MB |
1990 | case snd_soc_dapm_aif_in: |
1991 | case snd_soc_dapm_aif_out: | |
8ddab3f5 | 1992 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
1993 | list_add(&path->list_sink, &wsink->sources); |
1994 | list_add(&path->list_source, &wsource->sinks); | |
1995 | path->connect = 1; | |
1996 | return 0; | |
1997 | case snd_soc_dapm_mux: | |
24ff33ac | 1998 | case snd_soc_dapm_virt_mux: |
74155556 | 1999 | case snd_soc_dapm_value_mux: |
ce6120cc | 2000 | ret = dapm_connect_mux(dapm, wsource, wsink, path, control, |
82cfecdc | 2001 | &wsink->kcontrol_news[0]); |
2b97eabc RP |
2002 | if (ret != 0) |
2003 | goto err; | |
2004 | break; | |
2005 | case snd_soc_dapm_switch: | |
2006 | case snd_soc_dapm_mixer: | |
ca9c1aae | 2007 | case snd_soc_dapm_mixer_named_ctl: |
ce6120cc | 2008 | ret = dapm_connect_mixer(dapm, wsource, wsink, path, control); |
2b97eabc RP |
2009 | if (ret != 0) |
2010 | goto err; | |
2011 | break; | |
2012 | case snd_soc_dapm_hp: | |
2013 | case snd_soc_dapm_mic: | |
2014 | case snd_soc_dapm_line: | |
2015 | case snd_soc_dapm_spk: | |
8ddab3f5 | 2016 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
2017 | list_add(&path->list_sink, &wsink->sources); |
2018 | list_add(&path->list_source, &wsource->sinks); | |
2019 | path->connect = 0; | |
2020 | return 0; | |
2021 | } | |
2022 | return 0; | |
2023 | ||
2024 | err: | |
f7d41ae8 JN |
2025 | dev_warn(dapm->dev, "asoc: no dapm match for %s --> %s --> %s\n", |
2026 | source, control, sink); | |
2b97eabc RP |
2027 | kfree(path); |
2028 | return ret; | |
2029 | } | |
105f1c28 | 2030 | |
105f1c28 MB |
2031 | /** |
2032 | * snd_soc_dapm_add_routes - Add routes between DAPM widgets | |
ce6120cc | 2033 | * @dapm: DAPM context |
105f1c28 MB |
2034 | * @route: audio routes |
2035 | * @num: number of routes | |
2036 | * | |
2037 | * Connects 2 dapm widgets together via a named audio path. The sink is | |
2038 | * the widget receiving the audio signal, whilst the source is the sender | |
2039 | * of the audio signal. | |
2040 | * | |
2041 | * Returns 0 for success else error. On error all resources can be freed | |
2042 | * with a call to snd_soc_card_free(). | |
2043 | */ | |
ce6120cc | 2044 | int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm, |
105f1c28 MB |
2045 | const struct snd_soc_dapm_route *route, int num) |
2046 | { | |
2047 | int i, ret; | |
2048 | ||
2049 | for (i = 0; i < num; i++) { | |
ce6120cc | 2050 | ret = snd_soc_dapm_add_route(dapm, route); |
105f1c28 | 2051 | if (ret < 0) { |
f7d41ae8 JN |
2052 | dev_err(dapm->dev, "Failed to add route %s->%s\n", |
2053 | route->source, route->sink); | |
105f1c28 MB |
2054 | return ret; |
2055 | } | |
2056 | route++; | |
2057 | } | |
2058 | ||
2059 | return 0; | |
2060 | } | |
2061 | EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes); | |
2062 | ||
bf3a9e13 MB |
2063 | static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context *dapm, |
2064 | const struct snd_soc_dapm_route *route) | |
2065 | { | |
2066 | struct snd_soc_dapm_widget *source = dapm_find_widget(dapm, | |
2067 | route->source, | |
2068 | true); | |
2069 | struct snd_soc_dapm_widget *sink = dapm_find_widget(dapm, | |
2070 | route->sink, | |
2071 | true); | |
2072 | struct snd_soc_dapm_path *path; | |
2073 | int count = 0; | |
2074 | ||
2075 | if (!source) { | |
2076 | dev_err(dapm->dev, "Unable to find source %s for weak route\n", | |
2077 | route->source); | |
2078 | return -ENODEV; | |
2079 | } | |
2080 | ||
2081 | if (!sink) { | |
2082 | dev_err(dapm->dev, "Unable to find sink %s for weak route\n", | |
2083 | route->sink); | |
2084 | return -ENODEV; | |
2085 | } | |
2086 | ||
2087 | if (route->control || route->connected) | |
2088 | dev_warn(dapm->dev, "Ignoring control for weak route %s->%s\n", | |
2089 | route->source, route->sink); | |
2090 | ||
2091 | list_for_each_entry(path, &source->sinks, list_source) { | |
2092 | if (path->sink == sink) { | |
2093 | path->weak = 1; | |
2094 | count++; | |
2095 | } | |
2096 | } | |
2097 | ||
2098 | if (count == 0) | |
2099 | dev_err(dapm->dev, "No path found for weak route %s->%s\n", | |
2100 | route->source, route->sink); | |
2101 | if (count > 1) | |
2102 | dev_warn(dapm->dev, "%d paths found for weak route %s->%s\n", | |
2103 | count, route->source, route->sink); | |
2104 | ||
2105 | return 0; | |
2106 | } | |
2107 | ||
2108 | /** | |
2109 | * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak | |
2110 | * @dapm: DAPM context | |
2111 | * @route: audio routes | |
2112 | * @num: number of routes | |
2113 | * | |
2114 | * Mark existing routes matching those specified in the passed array | |
2115 | * as being weak, meaning that they are ignored for the purpose of | |
2116 | * power decisions. The main intended use case is for sidetone paths | |
2117 | * which couple audio between other independent paths if they are both | |
2118 | * active in order to make the combination work better at the user | |
2119 | * level but which aren't intended to be "used". | |
2120 | * | |
2121 | * Note that CODEC drivers should not use this as sidetone type paths | |
2122 | * can frequently also be used as bypass paths. | |
2123 | */ | |
2124 | int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context *dapm, | |
2125 | const struct snd_soc_dapm_route *route, int num) | |
2126 | { | |
2127 | int i, err; | |
2128 | int ret = 0; | |
2129 | ||
2130 | for (i = 0; i < num; i++) { | |
2131 | err = snd_soc_dapm_weak_route(dapm, route); | |
2132 | if (err) | |
2133 | ret = err; | |
2134 | route++; | |
2135 | } | |
2136 | ||
2137 | return ret; | |
2138 | } | |
2139 | EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes); | |
2140 | ||
2b97eabc RP |
2141 | /** |
2142 | * snd_soc_dapm_new_widgets - add new dapm widgets | |
ce6120cc | 2143 | * @dapm: DAPM context |
2b97eabc RP |
2144 | * |
2145 | * Checks the codec for any new dapm widgets and creates them if found. | |
2146 | * | |
2147 | * Returns 0 for success. | |
2148 | */ | |
ce6120cc | 2149 | int snd_soc_dapm_new_widgets(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
2150 | { |
2151 | struct snd_soc_dapm_widget *w; | |
b66a70d5 | 2152 | unsigned int val; |
2b97eabc | 2153 | |
97c866de | 2154 | list_for_each_entry(w, &dapm->card->widgets, list) |
2b97eabc RP |
2155 | { |
2156 | if (w->new) | |
2157 | continue; | |
2158 | ||
fad59888 SW |
2159 | if (w->num_kcontrols) { |
2160 | w->kcontrols = kzalloc(w->num_kcontrols * | |
2161 | sizeof(struct snd_kcontrol *), | |
2162 | GFP_KERNEL); | |
2163 | if (!w->kcontrols) | |
2164 | return -ENOMEM; | |
2165 | } | |
2166 | ||
2b97eabc RP |
2167 | switch(w->id) { |
2168 | case snd_soc_dapm_switch: | |
2169 | case snd_soc_dapm_mixer: | |
ca9c1aae | 2170 | case snd_soc_dapm_mixer_named_ctl: |
4b80b8c2 | 2171 | dapm_new_mixer(w); |
2b97eabc RP |
2172 | break; |
2173 | case snd_soc_dapm_mux: | |
24ff33ac | 2174 | case snd_soc_dapm_virt_mux: |
2e72f8e3 | 2175 | case snd_soc_dapm_value_mux: |
4b80b8c2 | 2176 | dapm_new_mux(w); |
2b97eabc | 2177 | break; |
2b97eabc | 2178 | case snd_soc_dapm_pga: |
d88429a6 | 2179 | case snd_soc_dapm_out_drv: |
4b80b8c2 | 2180 | dapm_new_pga(w); |
2b97eabc | 2181 | break; |
7ca3a18b | 2182 | default: |
2b97eabc RP |
2183 | break; |
2184 | } | |
b66a70d5 MB |
2185 | |
2186 | /* Read the initial power state from the device */ | |
2187 | if (w->reg >= 0) { | |
0445bdf4 | 2188 | val = soc_widget_read(w, w->reg); |
b66a70d5 MB |
2189 | val &= 1 << w->shift; |
2190 | if (w->invert) | |
2191 | val = !val; | |
2192 | ||
2193 | if (val) | |
2194 | w->power = 1; | |
2195 | } | |
2196 | ||
2b97eabc | 2197 | w->new = 1; |
d5d1e0be | 2198 | |
7508b12a | 2199 | dapm_mark_dirty(w, "new widget"); |
d5d1e0be | 2200 | dapm_debugfs_add_widget(w); |
2b97eabc RP |
2201 | } |
2202 | ||
ce6120cc | 2203 | dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc RP |
2204 | return 0; |
2205 | } | |
2206 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets); | |
2207 | ||
2208 | /** | |
2209 | * snd_soc_dapm_get_volsw - dapm mixer get callback | |
2210 | * @kcontrol: mixer control | |
ac11a2b3 | 2211 | * @ucontrol: control element information |
2b97eabc RP |
2212 | * |
2213 | * Callback to get the value of a dapm mixer control. | |
2214 | * | |
2215 | * Returns 0 for success. | |
2216 | */ | |
2217 | int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol, | |
2218 | struct snd_ctl_elem_value *ucontrol) | |
2219 | { | |
fafd2176 SW |
2220 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2221 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
4eaa9819 JS |
2222 | struct soc_mixer_control *mc = |
2223 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
2224 | unsigned int reg = mc->reg; |
2225 | unsigned int shift = mc->shift; | |
2226 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 2227 | int max = mc->max; |
815ecf8d JS |
2228 | unsigned int invert = mc->invert; |
2229 | unsigned int mask = (1 << fls(max)) - 1; | |
2b97eabc | 2230 | |
2b97eabc RP |
2231 | ucontrol->value.integer.value[0] = |
2232 | (snd_soc_read(widget->codec, reg) >> shift) & mask; | |
2233 | if (shift != rshift) | |
2234 | ucontrol->value.integer.value[1] = | |
2235 | (snd_soc_read(widget->codec, reg) >> rshift) & mask; | |
2236 | if (invert) { | |
2237 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 2238 | max - ucontrol->value.integer.value[0]; |
2b97eabc RP |
2239 | if (shift != rshift) |
2240 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 2241 | max - ucontrol->value.integer.value[1]; |
2b97eabc RP |
2242 | } |
2243 | ||
2244 | return 0; | |
2245 | } | |
2246 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw); | |
2247 | ||
2248 | /** | |
2249 | * snd_soc_dapm_put_volsw - dapm mixer set callback | |
2250 | * @kcontrol: mixer control | |
ac11a2b3 | 2251 | * @ucontrol: control element information |
2b97eabc RP |
2252 | * |
2253 | * Callback to set the value of a dapm mixer control. | |
2254 | * | |
2255 | * Returns 0 for success. | |
2256 | */ | |
2257 | int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, | |
2258 | struct snd_ctl_elem_value *ucontrol) | |
2259 | { | |
fafd2176 SW |
2260 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2261 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2262 | struct snd_soc_codec *codec = widget->codec; | |
4eaa9819 JS |
2263 | struct soc_mixer_control *mc = |
2264 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
2265 | unsigned int reg = mc->reg; |
2266 | unsigned int shift = mc->shift; | |
4eaa9819 | 2267 | int max = mc->max; |
815ecf8d JS |
2268 | unsigned int mask = (1 << fls(max)) - 1; |
2269 | unsigned int invert = mc->invert; | |
e9cf7049 | 2270 | unsigned int val; |
97404f2e MB |
2271 | int connect, change; |
2272 | struct snd_soc_dapm_update update; | |
fafd2176 | 2273 | int wi; |
2b97eabc RP |
2274 | |
2275 | val = (ucontrol->value.integer.value[0] & mask); | |
2276 | ||
2277 | if (invert) | |
a7a4ac86 | 2278 | val = max - val; |
e9cf7049 | 2279 | mask = mask << shift; |
2b97eabc | 2280 | val = val << shift; |
2b97eabc | 2281 | |
fafd2176 SW |
2282 | if (val) |
2283 | /* new connection */ | |
2284 | connect = invert ? 0 : 1; | |
2285 | else | |
2286 | /* old connection must be powered down */ | |
2287 | connect = invert ? 1 : 0; | |
2288 | ||
2289 | mutex_lock(&codec->mutex); | |
2b97eabc | 2290 | |
e9cf7049 | 2291 | change = snd_soc_test_bits(widget->codec, reg, mask, val); |
97404f2e | 2292 | if (change) { |
fafd2176 SW |
2293 | for (wi = 0; wi < wlist->num_widgets; wi++) { |
2294 | widget = wlist->widgets[wi]; | |
283375ce | 2295 | |
fafd2176 | 2296 | widget->value = val; |
97404f2e | 2297 | |
fafd2176 SW |
2298 | update.kcontrol = kcontrol; |
2299 | update.widget = widget; | |
2300 | update.reg = reg; | |
2301 | update.mask = mask; | |
2302 | update.val = val; | |
2303 | widget->dapm->update = &update; | |
97404f2e | 2304 | |
fafd2176 SW |
2305 | dapm_mixer_update_power(widget, kcontrol, connect); |
2306 | ||
2307 | widget->dapm->update = NULL; | |
2308 | } | |
283375ce MB |
2309 | } |
2310 | ||
fafd2176 | 2311 | mutex_unlock(&codec->mutex); |
97404f2e | 2312 | return 0; |
2b97eabc RP |
2313 | } |
2314 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw); | |
2315 | ||
2316 | /** | |
2317 | * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback | |
2318 | * @kcontrol: mixer control | |
ac11a2b3 | 2319 | * @ucontrol: control element information |
2b97eabc RP |
2320 | * |
2321 | * Callback to get the value of a dapm enumerated double mixer control. | |
2322 | * | |
2323 | * Returns 0 for success. | |
2324 | */ | |
2325 | int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol, | |
2326 | struct snd_ctl_elem_value *ucontrol) | |
2327 | { | |
fafd2176 SW |
2328 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2329 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2b97eabc | 2330 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f | 2331 | unsigned int val, bitmask; |
2b97eabc | 2332 | |
f8ba0b7b | 2333 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
2334 | ; |
2335 | val = snd_soc_read(widget->codec, e->reg); | |
2336 | ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1); | |
2337 | if (e->shift_l != e->shift_r) | |
2338 | ucontrol->value.enumerated.item[1] = | |
2339 | (val >> e->shift_r) & (bitmask - 1); | |
2340 | ||
2341 | return 0; | |
2342 | } | |
2343 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double); | |
2344 | ||
2345 | /** | |
2346 | * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback | |
2347 | * @kcontrol: mixer control | |
ac11a2b3 | 2348 | * @ucontrol: control element information |
2b97eabc RP |
2349 | * |
2350 | * Callback to set the value of a dapm enumerated double mixer control. | |
2351 | * | |
2352 | * Returns 0 for success. | |
2353 | */ | |
2354 | int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, | |
2355 | struct snd_ctl_elem_value *ucontrol) | |
2356 | { | |
fafd2176 SW |
2357 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2358 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2359 | struct snd_soc_codec *codec = widget->codec; | |
2b97eabc | 2360 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
3a65577d | 2361 | unsigned int val, mux, change; |
46f5822f | 2362 | unsigned int mask, bitmask; |
97404f2e | 2363 | struct snd_soc_dapm_update update; |
fafd2176 | 2364 | int wi; |
2b97eabc | 2365 | |
f8ba0b7b | 2366 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc | 2367 | ; |
f8ba0b7b | 2368 | if (ucontrol->value.enumerated.item[0] > e->max - 1) |
2b97eabc RP |
2369 | return -EINVAL; |
2370 | mux = ucontrol->value.enumerated.item[0]; | |
2371 | val = mux << e->shift_l; | |
2372 | mask = (bitmask - 1) << e->shift_l; | |
2373 | if (e->shift_l != e->shift_r) { | |
f8ba0b7b | 2374 | if (ucontrol->value.enumerated.item[1] > e->max - 1) |
2b97eabc RP |
2375 | return -EINVAL; |
2376 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
2377 | mask |= (bitmask - 1) << e->shift_r; | |
2378 | } | |
2379 | ||
fafd2176 SW |
2380 | mutex_lock(&codec->mutex); |
2381 | ||
3a65577d | 2382 | change = snd_soc_test_bits(widget->codec, e->reg, mask, val); |
fafd2176 SW |
2383 | if (change) { |
2384 | for (wi = 0; wi < wlist->num_widgets; wi++) { | |
2385 | widget = wlist->widgets[wi]; | |
2386 | ||
2387 | widget->value = val; | |
1642e3d4 | 2388 | |
fafd2176 SW |
2389 | update.kcontrol = kcontrol; |
2390 | update.widget = widget; | |
2391 | update.reg = e->reg; | |
2392 | update.mask = mask; | |
2393 | update.val = val; | |
2394 | widget->dapm->update = &update; | |
1642e3d4 | 2395 | |
fafd2176 | 2396 | dapm_mux_update_power(widget, kcontrol, change, mux, e); |
1642e3d4 | 2397 | |
fafd2176 SW |
2398 | widget->dapm->update = NULL; |
2399 | } | |
2400 | } | |
2b97eabc | 2401 | |
fafd2176 | 2402 | mutex_unlock(&codec->mutex); |
97404f2e | 2403 | return change; |
2b97eabc RP |
2404 | } |
2405 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double); | |
2406 | ||
d2b247a8 MB |
2407 | /** |
2408 | * snd_soc_dapm_get_enum_virt - Get virtual DAPM mux | |
2409 | * @kcontrol: mixer control | |
2410 | * @ucontrol: control element information | |
2411 | * | |
2412 | * Returns 0 for success. | |
2413 | */ | |
2414 | int snd_soc_dapm_get_enum_virt(struct snd_kcontrol *kcontrol, | |
2415 | struct snd_ctl_elem_value *ucontrol) | |
2416 | { | |
fafd2176 SW |
2417 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2418 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
d2b247a8 MB |
2419 | |
2420 | ucontrol->value.enumerated.item[0] = widget->value; | |
2421 | ||
2422 | return 0; | |
2423 | } | |
2424 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_virt); | |
2425 | ||
2426 | /** | |
2427 | * snd_soc_dapm_put_enum_virt - Set virtual DAPM mux | |
2428 | * @kcontrol: mixer control | |
2429 | * @ucontrol: control element information | |
2430 | * | |
2431 | * Returns 0 for success. | |
2432 | */ | |
2433 | int snd_soc_dapm_put_enum_virt(struct snd_kcontrol *kcontrol, | |
2434 | struct snd_ctl_elem_value *ucontrol) | |
2435 | { | |
fafd2176 SW |
2436 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2437 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2438 | struct snd_soc_codec *codec = widget->codec; | |
d2b247a8 MB |
2439 | struct soc_enum *e = |
2440 | (struct soc_enum *)kcontrol->private_value; | |
2441 | int change; | |
2442 | int ret = 0; | |
fafd2176 | 2443 | int wi; |
d2b247a8 MB |
2444 | |
2445 | if (ucontrol->value.enumerated.item[0] >= e->max) | |
2446 | return -EINVAL; | |
2447 | ||
fafd2176 | 2448 | mutex_lock(&codec->mutex); |
d2b247a8 MB |
2449 | |
2450 | change = widget->value != ucontrol->value.enumerated.item[0]; | |
fafd2176 SW |
2451 | if (change) { |
2452 | for (wi = 0; wi < wlist->num_widgets; wi++) { | |
2453 | widget = wlist->widgets[wi]; | |
2454 | ||
2455 | widget->value = ucontrol->value.enumerated.item[0]; | |
2456 | ||
2457 | dapm_mux_update_power(widget, kcontrol, change, | |
2458 | widget->value, e); | |
2459 | } | |
2460 | } | |
d2b247a8 | 2461 | |
fafd2176 | 2462 | mutex_unlock(&codec->mutex); |
d2b247a8 MB |
2463 | return ret; |
2464 | } | |
2465 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt); | |
2466 | ||
2e72f8e3 PU |
2467 | /** |
2468 | * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get | |
2469 | * callback | |
2470 | * @kcontrol: mixer control | |
2471 | * @ucontrol: control element information | |
2472 | * | |
2473 | * Callback to get the value of a dapm semi enumerated double mixer control. | |
2474 | * | |
2475 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
2476 | * used for handling bitfield coded enumeration for example. | |
2477 | * | |
2478 | * Returns 0 for success. | |
2479 | */ | |
2480 | int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol *kcontrol, | |
2481 | struct snd_ctl_elem_value *ucontrol) | |
2482 | { | |
fafd2176 SW |
2483 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2484 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
74155556 | 2485 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f | 2486 | unsigned int reg_val, val, mux; |
2e72f8e3 PU |
2487 | |
2488 | reg_val = snd_soc_read(widget->codec, e->reg); | |
2489 | val = (reg_val >> e->shift_l) & e->mask; | |
2490 | for (mux = 0; mux < e->max; mux++) { | |
2491 | if (val == e->values[mux]) | |
2492 | break; | |
2493 | } | |
2494 | ucontrol->value.enumerated.item[0] = mux; | |
2495 | if (e->shift_l != e->shift_r) { | |
2496 | val = (reg_val >> e->shift_r) & e->mask; | |
2497 | for (mux = 0; mux < e->max; mux++) { | |
2498 | if (val == e->values[mux]) | |
2499 | break; | |
2500 | } | |
2501 | ucontrol->value.enumerated.item[1] = mux; | |
2502 | } | |
2503 | ||
2504 | return 0; | |
2505 | } | |
2506 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double); | |
2507 | ||
2508 | /** | |
2509 | * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set | |
2510 | * callback | |
2511 | * @kcontrol: mixer control | |
2512 | * @ucontrol: control element information | |
2513 | * | |
2514 | * Callback to set the value of a dapm semi enumerated double mixer control. | |
2515 | * | |
2516 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
2517 | * used for handling bitfield coded enumeration for example. | |
2518 | * | |
2519 | * Returns 0 for success. | |
2520 | */ | |
2521 | int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol, | |
2522 | struct snd_ctl_elem_value *ucontrol) | |
2523 | { | |
fafd2176 SW |
2524 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2525 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2526 | struct snd_soc_codec *codec = widget->codec; | |
74155556 | 2527 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
3a65577d | 2528 | unsigned int val, mux, change; |
46f5822f | 2529 | unsigned int mask; |
97404f2e | 2530 | struct snd_soc_dapm_update update; |
fafd2176 | 2531 | int wi; |
2e72f8e3 PU |
2532 | |
2533 | if (ucontrol->value.enumerated.item[0] > e->max - 1) | |
2534 | return -EINVAL; | |
2535 | mux = ucontrol->value.enumerated.item[0]; | |
2536 | val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l; | |
2537 | mask = e->mask << e->shift_l; | |
2538 | if (e->shift_l != e->shift_r) { | |
2539 | if (ucontrol->value.enumerated.item[1] > e->max - 1) | |
2540 | return -EINVAL; | |
2541 | val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r; | |
2542 | mask |= e->mask << e->shift_r; | |
2543 | } | |
2544 | ||
fafd2176 SW |
2545 | mutex_lock(&codec->mutex); |
2546 | ||
3a65577d | 2547 | change = snd_soc_test_bits(widget->codec, e->reg, mask, val); |
fafd2176 SW |
2548 | if (change) { |
2549 | for (wi = 0; wi < wlist->num_widgets; wi++) { | |
2550 | widget = wlist->widgets[wi]; | |
1642e3d4 | 2551 | |
fafd2176 | 2552 | widget->value = val; |
1642e3d4 | 2553 | |
fafd2176 SW |
2554 | update.kcontrol = kcontrol; |
2555 | update.widget = widget; | |
2556 | update.reg = e->reg; | |
2557 | update.mask = mask; | |
2558 | update.val = val; | |
2559 | widget->dapm->update = &update; | |
1642e3d4 | 2560 | |
fafd2176 SW |
2561 | dapm_mux_update_power(widget, kcontrol, change, mux, e); |
2562 | ||
2563 | widget->dapm->update = NULL; | |
2564 | } | |
2565 | } | |
2e72f8e3 | 2566 | |
fafd2176 | 2567 | mutex_unlock(&codec->mutex); |
97404f2e | 2568 | return change; |
2e72f8e3 PU |
2569 | } |
2570 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double); | |
2571 | ||
8b37dbd2 MB |
2572 | /** |
2573 | * snd_soc_dapm_info_pin_switch - Info for a pin switch | |
2574 | * | |
2575 | * @kcontrol: mixer control | |
2576 | * @uinfo: control element information | |
2577 | * | |
2578 | * Callback to provide information about a pin switch control. | |
2579 | */ | |
2580 | int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol, | |
2581 | struct snd_ctl_elem_info *uinfo) | |
2582 | { | |
2583 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
2584 | uinfo->count = 1; | |
2585 | uinfo->value.integer.min = 0; | |
2586 | uinfo->value.integer.max = 1; | |
2587 | ||
2588 | return 0; | |
2589 | } | |
2590 | EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch); | |
2591 | ||
2592 | /** | |
2593 | * snd_soc_dapm_get_pin_switch - Get information for a pin switch | |
2594 | * | |
2595 | * @kcontrol: mixer control | |
2596 | * @ucontrol: Value | |
2597 | */ | |
2598 | int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol, | |
2599 | struct snd_ctl_elem_value *ucontrol) | |
2600 | { | |
2601 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
2602 | const char *pin = (const char *)kcontrol->private_value; | |
2603 | ||
2604 | mutex_lock(&codec->mutex); | |
2605 | ||
2606 | ucontrol->value.integer.value[0] = | |
ce6120cc | 2607 | snd_soc_dapm_get_pin_status(&codec->dapm, pin); |
8b37dbd2 MB |
2608 | |
2609 | mutex_unlock(&codec->mutex); | |
2610 | ||
2611 | return 0; | |
2612 | } | |
2613 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch); | |
2614 | ||
2615 | /** | |
2616 | * snd_soc_dapm_put_pin_switch - Set information for a pin switch | |
2617 | * | |
2618 | * @kcontrol: mixer control | |
2619 | * @ucontrol: Value | |
2620 | */ | |
2621 | int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol, | |
2622 | struct snd_ctl_elem_value *ucontrol) | |
2623 | { | |
2624 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
2625 | const char *pin = (const char *)kcontrol->private_value; | |
2626 | ||
2627 | mutex_lock(&codec->mutex); | |
2628 | ||
2629 | if (ucontrol->value.integer.value[0]) | |
ce6120cc | 2630 | snd_soc_dapm_enable_pin(&codec->dapm, pin); |
8b37dbd2 | 2631 | else |
ce6120cc | 2632 | snd_soc_dapm_disable_pin(&codec->dapm, pin); |
8b37dbd2 | 2633 | |
ce6120cc | 2634 | snd_soc_dapm_sync(&codec->dapm); |
8b37dbd2 MB |
2635 | |
2636 | mutex_unlock(&codec->mutex); | |
2637 | ||
2638 | return 0; | |
2639 | } | |
2640 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch); | |
2641 | ||
2b97eabc RP |
2642 | /** |
2643 | * snd_soc_dapm_new_control - create new dapm control | |
ce6120cc | 2644 | * @dapm: DAPM context |
2b97eabc RP |
2645 | * @widget: widget template |
2646 | * | |
2647 | * Creates a new dapm control based upon the template. | |
2648 | * | |
2649 | * Returns 0 for success else error. | |
2650 | */ | |
ce6120cc | 2651 | int snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
2652 | const struct snd_soc_dapm_widget *widget) |
2653 | { | |
2654 | struct snd_soc_dapm_widget *w; | |
ead9b919 | 2655 | size_t name_len; |
2b97eabc RP |
2656 | |
2657 | if ((w = dapm_cnew_widget(widget)) == NULL) | |
2658 | return -ENOMEM; | |
2659 | ||
ead9b919 | 2660 | name_len = strlen(widget->name) + 1; |
88e8b9a8 | 2661 | if (dapm->codec && dapm->codec->name_prefix) |
ead9b919 JN |
2662 | name_len += 1 + strlen(dapm->codec->name_prefix); |
2663 | w->name = kmalloc(name_len, GFP_KERNEL); | |
2664 | if (w->name == NULL) { | |
2665 | kfree(w); | |
2666 | return -ENOMEM; | |
2667 | } | |
88e8b9a8 | 2668 | if (dapm->codec && dapm->codec->name_prefix) |
ead9b919 JN |
2669 | snprintf(w->name, name_len, "%s %s", |
2670 | dapm->codec->name_prefix, widget->name); | |
2671 | else | |
2672 | snprintf(w->name, name_len, "%s", widget->name); | |
2673 | ||
7ca3a18b MB |
2674 | switch (w->id) { |
2675 | case snd_soc_dapm_switch: | |
2676 | case snd_soc_dapm_mixer: | |
2677 | case snd_soc_dapm_mixer_named_ctl: | |
2678 | w->power_check = dapm_generic_check_power; | |
2679 | break; | |
2680 | case snd_soc_dapm_mux: | |
2681 | case snd_soc_dapm_virt_mux: | |
2682 | case snd_soc_dapm_value_mux: | |
2683 | w->power_check = dapm_generic_check_power; | |
2684 | break; | |
2685 | case snd_soc_dapm_adc: | |
2686 | case snd_soc_dapm_aif_out: | |
2687 | w->power_check = dapm_adc_check_power; | |
2688 | break; | |
2689 | case snd_soc_dapm_dac: | |
2690 | case snd_soc_dapm_aif_in: | |
2691 | w->power_check = dapm_dac_check_power; | |
2692 | break; | |
2693 | case snd_soc_dapm_pga: | |
2694 | case snd_soc_dapm_out_drv: | |
2695 | case snd_soc_dapm_input: | |
2696 | case snd_soc_dapm_output: | |
2697 | case snd_soc_dapm_micbias: | |
2698 | case snd_soc_dapm_spk: | |
2699 | case snd_soc_dapm_hp: | |
2700 | case snd_soc_dapm_mic: | |
2701 | case snd_soc_dapm_line: | |
2702 | w->power_check = dapm_generic_check_power; | |
2703 | break; | |
2704 | case snd_soc_dapm_supply: | |
2705 | w->power_check = dapm_supply_check_power; | |
2706 | break; | |
2707 | default: | |
2708 | w->power_check = dapm_always_on_check_power; | |
2709 | break; | |
2710 | } | |
2711 | ||
97c866de | 2712 | dapm->n_widgets++; |
ce6120cc LG |
2713 | w->dapm = dapm; |
2714 | w->codec = dapm->codec; | |
b7950641 | 2715 | w->platform = dapm->platform; |
2b97eabc RP |
2716 | INIT_LIST_HEAD(&w->sources); |
2717 | INIT_LIST_HEAD(&w->sinks); | |
2718 | INIT_LIST_HEAD(&w->list); | |
db432b41 | 2719 | INIT_LIST_HEAD(&w->dirty); |
97c866de | 2720 | list_add(&w->list, &dapm->card->widgets); |
2b97eabc RP |
2721 | |
2722 | /* machine layer set ups unconnected pins and insertions */ | |
2723 | w->connected = 1; | |
2724 | return 0; | |
2725 | } | |
2726 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control); | |
2727 | ||
4ba1327a MB |
2728 | /** |
2729 | * snd_soc_dapm_new_controls - create new dapm controls | |
ce6120cc | 2730 | * @dapm: DAPM context |
4ba1327a MB |
2731 | * @widget: widget array |
2732 | * @num: number of widgets | |
2733 | * | |
2734 | * Creates new DAPM controls based upon the templates. | |
2735 | * | |
2736 | * Returns 0 for success else error. | |
2737 | */ | |
ce6120cc | 2738 | int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm, |
4ba1327a MB |
2739 | const struct snd_soc_dapm_widget *widget, |
2740 | int num) | |
2741 | { | |
2742 | int i, ret; | |
2743 | ||
2744 | for (i = 0; i < num; i++) { | |
ce6120cc | 2745 | ret = snd_soc_dapm_new_control(dapm, widget); |
b8b33cb5 | 2746 | if (ret < 0) { |
f7d41ae8 JN |
2747 | dev_err(dapm->dev, |
2748 | "ASoC: Failed to create DAPM control %s: %d\n", | |
2749 | widget->name, ret); | |
4ba1327a | 2750 | return ret; |
b8b33cb5 | 2751 | } |
4ba1327a MB |
2752 | widget++; |
2753 | } | |
2754 | return 0; | |
2755 | } | |
2756 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls); | |
2757 | ||
ce6120cc | 2758 | static void soc_dapm_stream_event(struct snd_soc_dapm_context *dapm, |
f0fba2ad | 2759 | const char *stream, int event) |
2b97eabc RP |
2760 | { |
2761 | struct snd_soc_dapm_widget *w; | |
2762 | ||
97c866de | 2763 | list_for_each_entry(w, &dapm->card->widgets, list) |
2b97eabc | 2764 | { |
97c866de | 2765 | if (!w->sname || w->dapm != dapm) |
2b97eabc | 2766 | continue; |
ee47b364 | 2767 | dev_vdbg(w->dapm->dev, "widget %s\n %s stream %s event %d\n", |
f7d41ae8 | 2768 | w->name, w->sname, stream, event); |
2b97eabc | 2769 | if (strstr(w->sname, stream)) { |
75c1f891 | 2770 | dapm_mark_dirty(w, "stream event"); |
2b97eabc RP |
2771 | switch(event) { |
2772 | case SND_SOC_DAPM_STREAM_START: | |
2773 | w->active = 1; | |
2774 | break; | |
2775 | case SND_SOC_DAPM_STREAM_STOP: | |
2776 | w->active = 0; | |
2777 | break; | |
2778 | case SND_SOC_DAPM_STREAM_SUSPEND: | |
2b97eabc | 2779 | case SND_SOC_DAPM_STREAM_RESUME: |
2b97eabc | 2780 | case SND_SOC_DAPM_STREAM_PAUSE_PUSH: |
2b97eabc RP |
2781 | case SND_SOC_DAPM_STREAM_PAUSE_RELEASE: |
2782 | break; | |
2783 | } | |
2784 | } | |
2785 | } | |
2b97eabc | 2786 | |
ce6120cc | 2787 | dapm_power_widgets(dapm, event); |
64a648c2 LG |
2788 | |
2789 | /* do we need to notify any clients that DAPM stream is complete */ | |
2790 | if (dapm->stream_event) | |
2791 | dapm->stream_event(dapm, event); | |
ce6120cc LG |
2792 | } |
2793 | ||
2794 | /** | |
2795 | * snd_soc_dapm_stream_event - send a stream event to the dapm core | |
2796 | * @rtd: PCM runtime data | |
2797 | * @stream: stream name | |
2798 | * @event: stream event | |
2799 | * | |
2800 | * Sends a stream event to the dapm core. The core then makes any | |
2801 | * necessary widget power changes. | |
2802 | * | |
2803 | * Returns 0 for success else error. | |
2804 | */ | |
2805 | int snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, | |
2806 | const char *stream, int event) | |
2807 | { | |
2808 | struct snd_soc_codec *codec = rtd->codec; | |
2809 | ||
2810 | if (stream == NULL) | |
2811 | return 0; | |
2812 | ||
2813 | mutex_lock(&codec->mutex); | |
2814 | soc_dapm_stream_event(&codec->dapm, stream, event); | |
8e8b2d67 | 2815 | mutex_unlock(&codec->mutex); |
2b97eabc RP |
2816 | return 0; |
2817 | } | |
2b97eabc RP |
2818 | |
2819 | /** | |
a5302181 | 2820 | * snd_soc_dapm_enable_pin - enable pin. |
ce6120cc | 2821 | * @dapm: DAPM context |
a5302181 | 2822 | * @pin: pin name |
2b97eabc | 2823 | * |
74b8f955 | 2824 | * Enables input/output pin and its parents or children widgets iff there is |
a5302181 LG |
2825 | * a valid audio route and active audio stream. |
2826 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2827 | * do any widget power switching. | |
2b97eabc | 2828 | */ |
ce6120cc | 2829 | int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin) |
2b97eabc | 2830 | { |
ce6120cc | 2831 | return snd_soc_dapm_set_pin(dapm, pin, 1); |
a5302181 LG |
2832 | } |
2833 | EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin); | |
2b97eabc | 2834 | |
da34183e MB |
2835 | /** |
2836 | * snd_soc_dapm_force_enable_pin - force a pin to be enabled | |
ce6120cc | 2837 | * @dapm: DAPM context |
da34183e MB |
2838 | * @pin: pin name |
2839 | * | |
2840 | * Enables input/output pin regardless of any other state. This is | |
2841 | * intended for use with microphone bias supplies used in microphone | |
2842 | * jack detection. | |
2843 | * | |
2844 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2845 | * do any widget power switching. | |
2846 | */ | |
ce6120cc LG |
2847 | int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm, |
2848 | const char *pin) | |
da34183e | 2849 | { |
91a5fca4 | 2850 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); |
da34183e | 2851 | |
91a5fca4 LPC |
2852 | if (!w) { |
2853 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); | |
2854 | return -EINVAL; | |
0d86733c MB |
2855 | } |
2856 | ||
91a5fca4 LPC |
2857 | dev_dbg(w->dapm->dev, "dapm: force enable pin %s\n", pin); |
2858 | w->connected = 1; | |
2859 | w->force = 1; | |
75c1f891 | 2860 | dapm_mark_dirty(w, "force enable"); |
da34183e | 2861 | |
91a5fca4 | 2862 | return 0; |
da34183e MB |
2863 | } |
2864 | EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin); | |
2865 | ||
a5302181 LG |
2866 | /** |
2867 | * snd_soc_dapm_disable_pin - disable pin. | |
ce6120cc | 2868 | * @dapm: DAPM context |
a5302181 LG |
2869 | * @pin: pin name |
2870 | * | |
74b8f955 | 2871 | * Disables input/output pin and its parents or children widgets. |
a5302181 LG |
2872 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to |
2873 | * do any widget power switching. | |
2874 | */ | |
ce6120cc LG |
2875 | int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm, |
2876 | const char *pin) | |
a5302181 | 2877 | { |
ce6120cc | 2878 | return snd_soc_dapm_set_pin(dapm, pin, 0); |
2b97eabc | 2879 | } |
a5302181 | 2880 | EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin); |
2b97eabc | 2881 | |
5817b52a MB |
2882 | /** |
2883 | * snd_soc_dapm_nc_pin - permanently disable pin. | |
ce6120cc | 2884 | * @dapm: DAPM context |
5817b52a MB |
2885 | * @pin: pin name |
2886 | * | |
2887 | * Marks the specified pin as being not connected, disabling it along | |
2888 | * any parent or child widgets. At present this is identical to | |
2889 | * snd_soc_dapm_disable_pin() but in future it will be extended to do | |
2890 | * additional things such as disabling controls which only affect | |
2891 | * paths through the pin. | |
2892 | * | |
2893 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2894 | * do any widget power switching. | |
2895 | */ | |
ce6120cc | 2896 | int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin) |
5817b52a | 2897 | { |
ce6120cc | 2898 | return snd_soc_dapm_set_pin(dapm, pin, 0); |
5817b52a MB |
2899 | } |
2900 | EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin); | |
2901 | ||
eeec12bf | 2902 | /** |
a5302181 | 2903 | * snd_soc_dapm_get_pin_status - get audio pin status |
ce6120cc | 2904 | * @dapm: DAPM context |
a5302181 | 2905 | * @pin: audio signal pin endpoint (or start point) |
eeec12bf | 2906 | * |
a5302181 | 2907 | * Get audio pin status - connected or disconnected. |
eeec12bf | 2908 | * |
a5302181 | 2909 | * Returns 1 for connected otherwise 0. |
eeec12bf | 2910 | */ |
ce6120cc LG |
2911 | int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm, |
2912 | const char *pin) | |
eeec12bf | 2913 | { |
91a5fca4 | 2914 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); |
eeec12bf | 2915 | |
91a5fca4 LPC |
2916 | if (w) |
2917 | return w->connected; | |
a68b38ad | 2918 | |
eeec12bf GG |
2919 | return 0; |
2920 | } | |
a5302181 | 2921 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status); |
eeec12bf | 2922 | |
1547aba9 MB |
2923 | /** |
2924 | * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint | |
ce6120cc | 2925 | * @dapm: DAPM context |
1547aba9 MB |
2926 | * @pin: audio signal pin endpoint (or start point) |
2927 | * | |
2928 | * Mark the given endpoint or pin as ignoring suspend. When the | |
2929 | * system is disabled a path between two endpoints flagged as ignoring | |
2930 | * suspend will not be disabled. The path must already be enabled via | |
2931 | * normal means at suspend time, it will not be turned on if it was not | |
2932 | * already enabled. | |
2933 | */ | |
ce6120cc LG |
2934 | int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm, |
2935 | const char *pin) | |
1547aba9 | 2936 | { |
91a5fca4 | 2937 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, false); |
1547aba9 | 2938 | |
91a5fca4 LPC |
2939 | if (!w) { |
2940 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); | |
2941 | return -EINVAL; | |
1547aba9 MB |
2942 | } |
2943 | ||
91a5fca4 LPC |
2944 | w->ignore_suspend = 1; |
2945 | ||
2946 | return 0; | |
1547aba9 MB |
2947 | } |
2948 | EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend); | |
2949 | ||
1633281b SW |
2950 | static bool snd_soc_dapm_widget_in_card_paths(struct snd_soc_card *card, |
2951 | struct snd_soc_dapm_widget *w) | |
2952 | { | |
2953 | struct snd_soc_dapm_path *p; | |
2954 | ||
2955 | list_for_each_entry(p, &card->paths, list) { | |
2956 | if ((p->source == w) || (p->sink == w)) { | |
2957 | dev_dbg(card->dev, | |
2958 | "... Path %s(id:%d dapm:%p) - %s(id:%d dapm:%p)\n", | |
2959 | p->source->name, p->source->id, p->source->dapm, | |
2960 | p->sink->name, p->sink->id, p->sink->dapm); | |
2961 | ||
2962 | /* Connected to something other than the codec */ | |
2963 | if (p->source->dapm != p->sink->dapm) | |
2964 | return true; | |
2965 | /* | |
2966 | * Loopback connection from codec external pin to | |
2967 | * codec external pin | |
2968 | */ | |
2969 | if (p->sink->id == snd_soc_dapm_input) { | |
2970 | switch (p->source->id) { | |
2971 | case snd_soc_dapm_output: | |
2972 | case snd_soc_dapm_micbias: | |
2973 | return true; | |
2974 | default: | |
2975 | break; | |
2976 | } | |
2977 | } | |
2978 | } | |
2979 | } | |
2980 | ||
2981 | return false; | |
2982 | } | |
2983 | ||
2984 | /** | |
2985 | * snd_soc_dapm_auto_nc_codec_pins - call snd_soc_dapm_nc_pin for unused pins | |
2986 | * @codec: The codec whose pins should be processed | |
2987 | * | |
2988 | * Automatically call snd_soc_dapm_nc_pin() for any external pins in the codec | |
2989 | * which are unused. Pins are used if they are connected externally to the | |
2990 | * codec, whether that be to some other device, or a loop-back connection to | |
2991 | * the codec itself. | |
2992 | */ | |
2993 | void snd_soc_dapm_auto_nc_codec_pins(struct snd_soc_codec *codec) | |
2994 | { | |
2995 | struct snd_soc_card *card = codec->card; | |
2996 | struct snd_soc_dapm_context *dapm = &codec->dapm; | |
2997 | struct snd_soc_dapm_widget *w; | |
2998 | ||
2999 | dev_dbg(card->dev, "Auto NC: DAPMs: card:%p codec:%p\n", | |
3000 | &card->dapm, &codec->dapm); | |
3001 | ||
3002 | list_for_each_entry(w, &card->widgets, list) { | |
3003 | if (w->dapm != dapm) | |
3004 | continue; | |
3005 | switch (w->id) { | |
3006 | case snd_soc_dapm_input: | |
3007 | case snd_soc_dapm_output: | |
3008 | case snd_soc_dapm_micbias: | |
3009 | dev_dbg(card->dev, "Auto NC: Checking widget %s\n", | |
3010 | w->name); | |
3011 | if (!snd_soc_dapm_widget_in_card_paths(card, w)) { | |
3012 | dev_dbg(card->dev, | |
3013 | "... Not in map; disabling\n"); | |
3014 | snd_soc_dapm_nc_pin(dapm, w->name); | |
3015 | } | |
3016 | break; | |
3017 | default: | |
3018 | break; | |
3019 | } | |
3020 | } | |
3021 | } | |
3022 | ||
2b97eabc RP |
3023 | /** |
3024 | * snd_soc_dapm_free - free dapm resources | |
728a5222 | 3025 | * @dapm: DAPM context |
2b97eabc RP |
3026 | * |
3027 | * Free all dapm widgets and resources. | |
3028 | */ | |
ce6120cc | 3029 | void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm) |
2b97eabc | 3030 | { |
ce6120cc | 3031 | snd_soc_dapm_sys_remove(dapm->dev); |
6c45e126 | 3032 | dapm_debugfs_cleanup(dapm); |
ce6120cc | 3033 | dapm_free_widgets(dapm); |
7be31be8 | 3034 | list_del(&dapm->list); |
2b97eabc RP |
3035 | } |
3036 | EXPORT_SYMBOL_GPL(snd_soc_dapm_free); | |
3037 | ||
ce6120cc | 3038 | static void soc_dapm_shutdown_codec(struct snd_soc_dapm_context *dapm) |
51737470 | 3039 | { |
51737470 MB |
3040 | struct snd_soc_dapm_widget *w; |
3041 | LIST_HEAD(down_list); | |
3042 | int powerdown = 0; | |
3043 | ||
97c866de JN |
3044 | list_for_each_entry(w, &dapm->card->widgets, list) { |
3045 | if (w->dapm != dapm) | |
3046 | continue; | |
51737470 | 3047 | if (w->power) { |
828a842f | 3048 | dapm_seq_insert(w, &down_list, false); |
c2caa4da | 3049 | w->power = 0; |
51737470 MB |
3050 | powerdown = 1; |
3051 | } | |
3052 | } | |
3053 | ||
3054 | /* If there were no widgets to power down we're already in | |
3055 | * standby. | |
3056 | */ | |
3057 | if (powerdown) { | |
ed5a4c47 | 3058 | snd_soc_dapm_set_bias_level(dapm, SND_SOC_BIAS_PREPARE); |
828a842f | 3059 | dapm_seq_run(dapm, &down_list, 0, false); |
ed5a4c47 | 3060 | snd_soc_dapm_set_bias_level(dapm, SND_SOC_BIAS_STANDBY); |
51737470 | 3061 | } |
f0fba2ad LG |
3062 | } |
3063 | ||
3064 | /* | |
3065 | * snd_soc_dapm_shutdown - callback for system shutdown | |
3066 | */ | |
3067 | void snd_soc_dapm_shutdown(struct snd_soc_card *card) | |
3068 | { | |
3069 | struct snd_soc_codec *codec; | |
3070 | ||
ce6120cc LG |
3071 | list_for_each_entry(codec, &card->codec_dev_list, list) { |
3072 | soc_dapm_shutdown_codec(&codec->dapm); | |
ed5a4c47 | 3073 | snd_soc_dapm_set_bias_level(&codec->dapm, SND_SOC_BIAS_OFF); |
ce6120cc | 3074 | } |
51737470 MB |
3075 | } |
3076 | ||
2b97eabc | 3077 | /* Module information */ |
d331124d | 3078 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
2b97eabc RP |
3079 | MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC"); |
3080 | MODULE_LICENSE("GPL"); |