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: | |
1ab97c8c | 342 | case snd_soc_dapm_siggen: |
2b97eabc RP |
343 | case snd_soc_dapm_dac: |
344 | case snd_soc_dapm_micbias: | |
345 | case snd_soc_dapm_vmid: | |
246d0a17 | 346 | case snd_soc_dapm_supply: |
010ff262 MB |
347 | case snd_soc_dapm_aif_in: |
348 | case snd_soc_dapm_aif_out: | |
2b97eabc RP |
349 | case snd_soc_dapm_hp: |
350 | case snd_soc_dapm_mic: | |
351 | case snd_soc_dapm_spk: | |
352 | case snd_soc_dapm_line: | |
56563100 MB |
353 | p->connect = 1; |
354 | break; | |
355 | /* does affect routing - dynamically connected */ | |
2b97eabc RP |
356 | case snd_soc_dapm_pre: |
357 | case snd_soc_dapm_post: | |
358 | p->connect = 0; | |
359 | break; | |
360 | } | |
361 | } | |
362 | ||
74b8f955 | 363 | /* connect mux widget to its interconnecting audio paths */ |
ce6120cc | 364 | static int dapm_connect_mux(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
365 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, |
366 | struct snd_soc_dapm_path *path, const char *control_name, | |
367 | const struct snd_kcontrol_new *kcontrol) | |
368 | { | |
369 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
370 | int i; | |
371 | ||
f8ba0b7b | 372 | for (i = 0; i < e->max; i++) { |
2b97eabc | 373 | if (!(strcmp(control_name, e->texts[i]))) { |
8ddab3f5 | 374 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
375 | list_add(&path->list_sink, &dest->sources); |
376 | list_add(&path->list_source, &src->sinks); | |
377 | path->name = (char*)e->texts[i]; | |
378 | dapm_set_path_status(dest, path, 0); | |
379 | return 0; | |
380 | } | |
381 | } | |
382 | ||
383 | return -ENODEV; | |
384 | } | |
385 | ||
74b8f955 | 386 | /* connect mixer widget to its interconnecting audio paths */ |
ce6120cc | 387 | static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
388 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, |
389 | struct snd_soc_dapm_path *path, const char *control_name) | |
390 | { | |
391 | int i; | |
392 | ||
393 | /* search for mixer kcontrol */ | |
394 | for (i = 0; i < dest->num_kcontrols; i++) { | |
82cfecdc | 395 | if (!strcmp(control_name, dest->kcontrol_news[i].name)) { |
8ddab3f5 | 396 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
397 | list_add(&path->list_sink, &dest->sources); |
398 | list_add(&path->list_source, &src->sinks); | |
82cfecdc | 399 | path->name = dest->kcontrol_news[i].name; |
2b97eabc RP |
400 | dapm_set_path_status(dest, path, i); |
401 | return 0; | |
402 | } | |
403 | } | |
404 | return -ENODEV; | |
405 | } | |
406 | ||
af46800b | 407 | static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context *dapm, |
1007da06 | 408 | struct snd_soc_dapm_widget *kcontrolw, |
af46800b SW |
409 | const struct snd_kcontrol_new *kcontrol_new, |
410 | struct snd_kcontrol **kcontrol) | |
411 | { | |
412 | struct snd_soc_dapm_widget *w; | |
413 | int i; | |
414 | ||
415 | *kcontrol = NULL; | |
416 | ||
417 | list_for_each_entry(w, &dapm->card->widgets, list) { | |
1007da06 SW |
418 | if (w == kcontrolw || w->dapm != kcontrolw->dapm) |
419 | continue; | |
af46800b SW |
420 | for (i = 0; i < w->num_kcontrols; i++) { |
421 | if (&w->kcontrol_news[i] == kcontrol_new) { | |
422 | if (w->kcontrols) | |
423 | *kcontrol = w->kcontrols[i]; | |
424 | return 1; | |
425 | } | |
426 | } | |
427 | } | |
428 | ||
429 | return 0; | |
430 | } | |
431 | ||
2b97eabc | 432 | /* create new dapm mixer control */ |
4b80b8c2 | 433 | static int dapm_new_mixer(struct snd_soc_dapm_widget *w) |
2b97eabc | 434 | { |
4b80b8c2 | 435 | struct snd_soc_dapm_context *dapm = w->dapm; |
2b97eabc | 436 | int i, ret = 0; |
3e5ff4df | 437 | size_t name_len, prefix_len; |
2b97eabc | 438 | struct snd_soc_dapm_path *path; |
12ea2c78 | 439 | struct snd_card *card = dapm->card->snd_card; |
efb7ac3f | 440 | const char *prefix; |
fafd2176 SW |
441 | struct snd_soc_dapm_widget_list *wlist; |
442 | size_t wlistsize; | |
efb7ac3f MB |
443 | |
444 | if (dapm->codec) | |
445 | prefix = dapm->codec->name_prefix; | |
446 | else | |
447 | prefix = NULL; | |
2b97eabc | 448 | |
3e5ff4df MB |
449 | if (prefix) |
450 | prefix_len = strlen(prefix) + 1; | |
451 | else | |
452 | prefix_len = 0; | |
453 | ||
2b97eabc RP |
454 | /* add kcontrol */ |
455 | for (i = 0; i < w->num_kcontrols; i++) { | |
456 | ||
457 | /* match name */ | |
458 | list_for_each_entry(path, &w->sources, list_sink) { | |
459 | ||
460 | /* mixer/mux paths name must match control name */ | |
82cfecdc | 461 | if (path->name != (char *)w->kcontrol_news[i].name) |
2b97eabc RP |
462 | continue; |
463 | ||
82cd8764 LPC |
464 | if (w->kcontrols[i]) { |
465 | path->kcontrol = w->kcontrols[i]; | |
466 | continue; | |
467 | } | |
468 | ||
fafd2176 SW |
469 | wlistsize = sizeof(struct snd_soc_dapm_widget_list) + |
470 | sizeof(struct snd_soc_dapm_widget *), | |
471 | wlist = kzalloc(wlistsize, GFP_KERNEL); | |
472 | if (wlist == NULL) { | |
473 | dev_err(dapm->dev, | |
474 | "asoc: can't allocate widget list for %s\n", | |
475 | w->name); | |
476 | return -ENOMEM; | |
477 | } | |
478 | wlist->num_widgets = 1; | |
479 | wlist->widgets[0] = w; | |
480 | ||
ca9c1aae IM |
481 | /* add dapm control with long name. |
482 | * for dapm_mixer this is the concatenation of the | |
483 | * mixer and kcontrol name. | |
484 | * for dapm_mixer_named_ctl this is simply the | |
485 | * kcontrol name. | |
486 | */ | |
82cfecdc | 487 | name_len = strlen(w->kcontrol_news[i].name) + 1; |
07495f3e | 488 | if (w->id != snd_soc_dapm_mixer_named_ctl) |
ca9c1aae IM |
489 | name_len += 1 + strlen(w->name); |
490 | ||
219b93f5 | 491 | path->long_name = kmalloc(name_len, GFP_KERNEL); |
ca9c1aae | 492 | |
fafd2176 SW |
493 | if (path->long_name == NULL) { |
494 | kfree(wlist); | |
2b97eabc | 495 | return -ENOMEM; |
fafd2176 | 496 | } |
2b97eabc | 497 | |
ca9c1aae | 498 | switch (w->id) { |
ca9c1aae | 499 | default: |
3e5ff4df MB |
500 | /* The control will get a prefix from |
501 | * the control creation process but | |
502 | * we're also using the same prefix | |
503 | * for widgets so cut the prefix off | |
504 | * the front of the widget name. | |
505 | */ | |
ca9c1aae | 506 | snprintf(path->long_name, name_len, "%s %s", |
3e5ff4df | 507 | w->name + prefix_len, |
82cfecdc | 508 | w->kcontrol_news[i].name); |
07495f3e | 509 | break; |
ca9c1aae IM |
510 | case snd_soc_dapm_mixer_named_ctl: |
511 | snprintf(path->long_name, name_len, "%s", | |
82cfecdc | 512 | w->kcontrol_news[i].name); |
07495f3e | 513 | break; |
ca9c1aae IM |
514 | } |
515 | ||
219b93f5 MB |
516 | path->long_name[name_len - 1] = '\0'; |
517 | ||
fafd2176 SW |
518 | path->kcontrol = snd_soc_cnew(&w->kcontrol_news[i], |
519 | wlist, path->long_name, | |
520 | prefix); | |
ce6120cc | 521 | ret = snd_ctl_add(card, path->kcontrol); |
2b97eabc | 522 | if (ret < 0) { |
f7d41ae8 JN |
523 | dev_err(dapm->dev, |
524 | "asoc: failed to add dapm kcontrol %s: %d\n", | |
525 | path->long_name, ret); | |
fafd2176 | 526 | kfree(wlist); |
2b97eabc RP |
527 | kfree(path->long_name); |
528 | path->long_name = NULL; | |
529 | return ret; | |
530 | } | |
fad59888 | 531 | w->kcontrols[i] = path->kcontrol; |
2b97eabc RP |
532 | } |
533 | } | |
534 | return ret; | |
535 | } | |
536 | ||
537 | /* create new dapm mux control */ | |
4b80b8c2 | 538 | static int dapm_new_mux(struct snd_soc_dapm_widget *w) |
2b97eabc | 539 | { |
4b80b8c2 | 540 | struct snd_soc_dapm_context *dapm = w->dapm; |
2b97eabc RP |
541 | struct snd_soc_dapm_path *path = NULL; |
542 | struct snd_kcontrol *kcontrol; | |
12ea2c78 | 543 | struct snd_card *card = dapm->card->snd_card; |
efb7ac3f | 544 | const char *prefix; |
3e5ff4df | 545 | size_t prefix_len; |
af46800b | 546 | int ret; |
fafd2176 | 547 | struct snd_soc_dapm_widget_list *wlist; |
af46800b | 548 | int shared, wlistentries; |
fafd2176 | 549 | size_t wlistsize; |
af46800b | 550 | char *name; |
2b97eabc | 551 | |
af46800b SW |
552 | if (w->num_kcontrols != 1) { |
553 | dev_err(dapm->dev, | |
554 | "asoc: mux %s has incorrect number of controls\n", | |
555 | w->name); | |
2b97eabc RP |
556 | return -EINVAL; |
557 | } | |
558 | ||
1007da06 | 559 | shared = dapm_is_shared_kcontrol(dapm, w, &w->kcontrol_news[0], |
af46800b SW |
560 | &kcontrol); |
561 | if (kcontrol) { | |
562 | wlist = kcontrol->private_data; | |
563 | wlistentries = wlist->num_widgets + 1; | |
564 | } else { | |
565 | wlist = NULL; | |
566 | wlistentries = 1; | |
567 | } | |
fafd2176 | 568 | wlistsize = sizeof(struct snd_soc_dapm_widget_list) + |
af46800b SW |
569 | wlistentries * sizeof(struct snd_soc_dapm_widget *), |
570 | wlist = krealloc(wlist, wlistsize, GFP_KERNEL); | |
fafd2176 SW |
571 | if (wlist == NULL) { |
572 | dev_err(dapm->dev, | |
573 | "asoc: can't allocate widget list for %s\n", w->name); | |
574 | return -ENOMEM; | |
575 | } | |
af46800b SW |
576 | wlist->num_widgets = wlistentries; |
577 | wlist->widgets[wlistentries - 1] = w; | |
efb7ac3f | 578 | |
af46800b SW |
579 | if (!kcontrol) { |
580 | if (dapm->codec) | |
581 | prefix = dapm->codec->name_prefix; | |
582 | else | |
583 | prefix = NULL; | |
584 | ||
585 | if (shared) { | |
586 | name = w->kcontrol_news[0].name; | |
587 | prefix_len = 0; | |
588 | } else { | |
589 | name = w->name; | |
590 | if (prefix) | |
591 | prefix_len = strlen(prefix) + 1; | |
592 | else | |
593 | prefix_len = 0; | |
594 | } | |
3e5ff4df | 595 | |
af46800b SW |
596 | /* |
597 | * The control will get a prefix from the control creation | |
598 | * process but we're also using the same prefix for widgets so | |
599 | * cut the prefix off the front of the widget name. | |
600 | */ | |
601 | kcontrol = snd_soc_cnew(&w->kcontrol_news[0], wlist, | |
602 | name + prefix_len, prefix); | |
603 | ret = snd_ctl_add(card, kcontrol); | |
604 | if (ret < 0) { | |
53daf208 MB |
605 | dev_err(dapm->dev, "failed to add kcontrol %s: %d\n", |
606 | w->name, ret); | |
af46800b SW |
607 | kfree(wlist); |
608 | return ret; | |
609 | } | |
610 | } | |
ce6120cc | 611 | |
af46800b | 612 | kcontrol->private_data = wlist; |
2b97eabc | 613 | |
fad59888 SW |
614 | w->kcontrols[0] = kcontrol; |
615 | ||
2b97eabc RP |
616 | list_for_each_entry(path, &w->sources, list_sink) |
617 | path->kcontrol = kcontrol; | |
618 | ||
af46800b | 619 | return 0; |
2b97eabc RP |
620 | } |
621 | ||
622 | /* create new dapm volume control */ | |
4b80b8c2 | 623 | static int dapm_new_pga(struct snd_soc_dapm_widget *w) |
2b97eabc | 624 | { |
a6c65736 | 625 | if (w->num_kcontrols) |
f7d41ae8 JN |
626 | dev_err(w->dapm->dev, |
627 | "asoc: PGA controls not supported: '%s'\n", w->name); | |
2b97eabc | 628 | |
a6c65736 | 629 | return 0; |
2b97eabc RP |
630 | } |
631 | ||
632 | /* reset 'walked' bit for each dapm path */ | |
ce6120cc | 633 | static inline void dapm_clear_walk(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
634 | { |
635 | struct snd_soc_dapm_path *p; | |
636 | ||
8ddab3f5 | 637 | list_for_each_entry(p, &dapm->card->paths, list) |
2b97eabc RP |
638 | p->walked = 0; |
639 | } | |
640 | ||
9949788b MB |
641 | /* We implement power down on suspend by checking the power state of |
642 | * the ALSA card - when we are suspending the ALSA state for the card | |
643 | * is set to D3. | |
644 | */ | |
645 | static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget) | |
646 | { | |
12ea2c78 | 647 | int level = snd_power_get_state(widget->dapm->card->snd_card); |
9949788b | 648 | |
f0fba2ad | 649 | switch (level) { |
9949788b MB |
650 | case SNDRV_CTL_POWER_D3hot: |
651 | case SNDRV_CTL_POWER_D3cold: | |
1547aba9 | 652 | if (widget->ignore_suspend) |
f7d41ae8 JN |
653 | dev_dbg(widget->dapm->dev, "%s ignoring suspend\n", |
654 | widget->name); | |
1547aba9 | 655 | return widget->ignore_suspend; |
9949788b MB |
656 | default: |
657 | return 1; | |
658 | } | |
659 | } | |
660 | ||
2b97eabc RP |
661 | /* |
662 | * Recursively check for a completed path to an active or physically connected | |
663 | * output widget. Returns number of complete paths. | |
664 | */ | |
665 | static int is_connected_output_ep(struct snd_soc_dapm_widget *widget) | |
666 | { | |
667 | struct snd_soc_dapm_path *path; | |
668 | int con = 0; | |
669 | ||
024dc078 MB |
670 | if (widget->outputs >= 0) |
671 | return widget->outputs; | |
672 | ||
de02d078 MB |
673 | DAPM_UPDATE_STAT(widget, path_checks); |
674 | ||
246d0a17 MB |
675 | if (widget->id == snd_soc_dapm_supply) |
676 | return 0; | |
677 | ||
010ff262 MB |
678 | switch (widget->id) { |
679 | case snd_soc_dapm_adc: | |
680 | case snd_soc_dapm_aif_out: | |
024dc078 MB |
681 | if (widget->active) { |
682 | widget->outputs = snd_soc_dapm_suspend_check(widget); | |
683 | return widget->outputs; | |
684 | } | |
010ff262 MB |
685 | default: |
686 | break; | |
687 | } | |
2b97eabc RP |
688 | |
689 | if (widget->connected) { | |
690 | /* connected pin ? */ | |
024dc078 MB |
691 | if (widget->id == snd_soc_dapm_output && !widget->ext) { |
692 | widget->outputs = snd_soc_dapm_suspend_check(widget); | |
693 | return widget->outputs; | |
694 | } | |
2b97eabc RP |
695 | |
696 | /* connected jack or spk ? */ | |
024dc078 MB |
697 | if (widget->id == snd_soc_dapm_hp || |
698 | widget->id == snd_soc_dapm_spk || | |
699 | (widget->id == snd_soc_dapm_line && | |
700 | !list_empty(&widget->sources))) { | |
701 | widget->outputs = snd_soc_dapm_suspend_check(widget); | |
702 | return widget->outputs; | |
703 | } | |
2b97eabc RP |
704 | } |
705 | ||
706 | list_for_each_entry(path, &widget->sinks, list_source) { | |
e56235e0 MB |
707 | DAPM_UPDATE_STAT(widget, neighbour_checks); |
708 | ||
bf3a9e13 MB |
709 | if (path->weak) |
710 | continue; | |
711 | ||
2b97eabc RP |
712 | if (path->walked) |
713 | continue; | |
714 | ||
715 | if (path->sink && path->connect) { | |
716 | path->walked = 1; | |
717 | con += is_connected_output_ep(path->sink); | |
718 | } | |
719 | } | |
720 | ||
024dc078 MB |
721 | widget->outputs = con; |
722 | ||
2b97eabc RP |
723 | return con; |
724 | } | |
725 | ||
726 | /* | |
727 | * Recursively check for a completed path to an active or physically connected | |
728 | * input widget. Returns number of complete paths. | |
729 | */ | |
730 | static int is_connected_input_ep(struct snd_soc_dapm_widget *widget) | |
731 | { | |
732 | struct snd_soc_dapm_path *path; | |
733 | int con = 0; | |
734 | ||
024dc078 MB |
735 | if (widget->inputs >= 0) |
736 | return widget->inputs; | |
737 | ||
de02d078 MB |
738 | DAPM_UPDATE_STAT(widget, path_checks); |
739 | ||
246d0a17 MB |
740 | if (widget->id == snd_soc_dapm_supply) |
741 | return 0; | |
742 | ||
2b97eabc | 743 | /* active stream ? */ |
010ff262 MB |
744 | switch (widget->id) { |
745 | case snd_soc_dapm_dac: | |
746 | case snd_soc_dapm_aif_in: | |
024dc078 MB |
747 | if (widget->active) { |
748 | widget->inputs = snd_soc_dapm_suspend_check(widget); | |
749 | return widget->inputs; | |
750 | } | |
010ff262 MB |
751 | default: |
752 | break; | |
753 | } | |
2b97eabc RP |
754 | |
755 | if (widget->connected) { | |
756 | /* connected pin ? */ | |
024dc078 MB |
757 | if (widget->id == snd_soc_dapm_input && !widget->ext) { |
758 | widget->inputs = snd_soc_dapm_suspend_check(widget); | |
759 | return widget->inputs; | |
760 | } | |
2b97eabc RP |
761 | |
762 | /* connected VMID/Bias for lower pops */ | |
024dc078 MB |
763 | if (widget->id == snd_soc_dapm_vmid) { |
764 | widget->inputs = snd_soc_dapm_suspend_check(widget); | |
765 | return widget->inputs; | |
766 | } | |
2b97eabc RP |
767 | |
768 | /* connected jack ? */ | |
eaeae5d9 | 769 | if (widget->id == snd_soc_dapm_mic || |
024dc078 MB |
770 | (widget->id == snd_soc_dapm_line && |
771 | !list_empty(&widget->sinks))) { | |
772 | widget->inputs = snd_soc_dapm_suspend_check(widget); | |
773 | return widget->inputs; | |
774 | } | |
775 | ||
1ab97c8c MB |
776 | /* signal generator */ |
777 | if (widget->id == snd_soc_dapm_siggen) { | |
778 | widget->inputs = snd_soc_dapm_suspend_check(widget); | |
779 | return widget->inputs; | |
780 | } | |
2b97eabc RP |
781 | } |
782 | ||
783 | list_for_each_entry(path, &widget->sources, list_sink) { | |
e56235e0 MB |
784 | DAPM_UPDATE_STAT(widget, neighbour_checks); |
785 | ||
bf3a9e13 MB |
786 | if (path->weak) |
787 | continue; | |
788 | ||
2b97eabc RP |
789 | if (path->walked) |
790 | continue; | |
791 | ||
792 | if (path->source && path->connect) { | |
793 | path->walked = 1; | |
794 | con += is_connected_input_ep(path->source); | |
795 | } | |
796 | } | |
797 | ||
024dc078 MB |
798 | widget->inputs = con; |
799 | ||
2b97eabc RP |
800 | return con; |
801 | } | |
802 | ||
e2be2ccf JN |
803 | /* |
804 | * Handler for generic register modifier widget. | |
805 | */ | |
806 | int dapm_reg_event(struct snd_soc_dapm_widget *w, | |
807 | struct snd_kcontrol *kcontrol, int event) | |
808 | { | |
809 | unsigned int val; | |
810 | ||
811 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
812 | val = w->on_val; | |
813 | else | |
814 | val = w->off_val; | |
815 | ||
0445bdf4 | 816 | soc_widget_update_bits(w, -(w->reg + 1), |
e2be2ccf JN |
817 | w->mask << w->shift, val << w->shift); |
818 | ||
819 | return 0; | |
820 | } | |
11589418 | 821 | EXPORT_SYMBOL_GPL(dapm_reg_event); |
e2be2ccf | 822 | |
d805002b MB |
823 | static int dapm_widget_power_check(struct snd_soc_dapm_widget *w) |
824 | { | |
9b8a83b2 MB |
825 | if (w->power_checked) |
826 | return w->new_power; | |
827 | ||
d805002b | 828 | if (w->force) |
9b8a83b2 | 829 | w->new_power = 1; |
d805002b | 830 | else |
9b8a83b2 MB |
831 | w->new_power = w->power_check(w); |
832 | ||
833 | w->power_checked = true; | |
834 | ||
835 | return w->new_power; | |
d805002b MB |
836 | } |
837 | ||
cd0f2d47 MB |
838 | /* Generic check to see if a widget should be powered. |
839 | */ | |
840 | static int dapm_generic_check_power(struct snd_soc_dapm_widget *w) | |
841 | { | |
842 | int in, out; | |
843 | ||
de02d078 MB |
844 | DAPM_UPDATE_STAT(w, power_checks); |
845 | ||
cd0f2d47 | 846 | in = is_connected_input_ep(w); |
ce6120cc | 847 | dapm_clear_walk(w->dapm); |
cd0f2d47 | 848 | out = is_connected_output_ep(w); |
ce6120cc | 849 | dapm_clear_walk(w->dapm); |
cd0f2d47 MB |
850 | return out != 0 && in != 0; |
851 | } | |
852 | ||
6ea31b9f MB |
853 | /* Check to see if an ADC has power */ |
854 | static int dapm_adc_check_power(struct snd_soc_dapm_widget *w) | |
855 | { | |
856 | int in; | |
857 | ||
de02d078 MB |
858 | DAPM_UPDATE_STAT(w, power_checks); |
859 | ||
6ea31b9f MB |
860 | if (w->active) { |
861 | in = is_connected_input_ep(w); | |
ce6120cc | 862 | dapm_clear_walk(w->dapm); |
6ea31b9f MB |
863 | return in != 0; |
864 | } else { | |
865 | return dapm_generic_check_power(w); | |
866 | } | |
867 | } | |
868 | ||
869 | /* Check to see if a DAC has power */ | |
870 | static int dapm_dac_check_power(struct snd_soc_dapm_widget *w) | |
871 | { | |
872 | int out; | |
873 | ||
de02d078 MB |
874 | DAPM_UPDATE_STAT(w, power_checks); |
875 | ||
6ea31b9f MB |
876 | if (w->active) { |
877 | out = is_connected_output_ep(w); | |
ce6120cc | 878 | dapm_clear_walk(w->dapm); |
6ea31b9f MB |
879 | return out != 0; |
880 | } else { | |
881 | return dapm_generic_check_power(w); | |
882 | } | |
883 | } | |
884 | ||
246d0a17 MB |
885 | /* Check to see if a power supply is needed */ |
886 | static int dapm_supply_check_power(struct snd_soc_dapm_widget *w) | |
887 | { | |
888 | struct snd_soc_dapm_path *path; | |
246d0a17 | 889 | |
de02d078 MB |
890 | DAPM_UPDATE_STAT(w, power_checks); |
891 | ||
246d0a17 MB |
892 | /* Check if one of our outputs is connected */ |
893 | list_for_each_entry(path, &w->sinks, list_source) { | |
a8fdac83 MB |
894 | DAPM_UPDATE_STAT(w, neighbour_checks); |
895 | ||
bf3a9e13 MB |
896 | if (path->weak) |
897 | continue; | |
898 | ||
215edda3 MB |
899 | if (path->connected && |
900 | !path->connected(path->source, path->sink)) | |
901 | continue; | |
902 | ||
3017358a MB |
903 | if (!path->sink) |
904 | continue; | |
905 | ||
f68d7e16 MB |
906 | if (dapm_widget_power_check(path->sink)) |
907 | return 1; | |
246d0a17 MB |
908 | } |
909 | ||
ce6120cc | 910 | dapm_clear_walk(w->dapm); |
246d0a17 | 911 | |
f68d7e16 | 912 | return 0; |
246d0a17 MB |
913 | } |
914 | ||
35c64bca MB |
915 | static int dapm_always_on_check_power(struct snd_soc_dapm_widget *w) |
916 | { | |
917 | return 1; | |
918 | } | |
919 | ||
38357ab2 MB |
920 | static int dapm_seq_compare(struct snd_soc_dapm_widget *a, |
921 | struct snd_soc_dapm_widget *b, | |
828a842f | 922 | bool power_up) |
42aa3418 | 923 | { |
828a842f MB |
924 | int *sort; |
925 | ||
926 | if (power_up) | |
927 | sort = dapm_up_seq; | |
928 | else | |
929 | sort = dapm_down_seq; | |
930 | ||
38357ab2 MB |
931 | if (sort[a->id] != sort[b->id]) |
932 | return sort[a->id] - sort[b->id]; | |
20e4859d MB |
933 | if (a->subseq != b->subseq) { |
934 | if (power_up) | |
935 | return a->subseq - b->subseq; | |
936 | else | |
937 | return b->subseq - a->subseq; | |
938 | } | |
b22ead2a MB |
939 | if (a->reg != b->reg) |
940 | return a->reg - b->reg; | |
84dab567 MB |
941 | if (a->dapm != b->dapm) |
942 | return (unsigned long)a->dapm - (unsigned long)b->dapm; | |
42aa3418 | 943 | |
38357ab2 MB |
944 | return 0; |
945 | } | |
42aa3418 | 946 | |
38357ab2 MB |
947 | /* Insert a widget in order into a DAPM power sequence. */ |
948 | static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget, | |
949 | struct list_head *list, | |
828a842f | 950 | bool power_up) |
38357ab2 MB |
951 | { |
952 | struct snd_soc_dapm_widget *w; | |
953 | ||
954 | list_for_each_entry(w, list, power_list) | |
828a842f | 955 | if (dapm_seq_compare(new_widget, w, power_up) < 0) { |
38357ab2 MB |
956 | list_add_tail(&new_widget->power_list, &w->power_list); |
957 | return; | |
958 | } | |
959 | ||
960 | list_add_tail(&new_widget->power_list, list); | |
961 | } | |
962 | ||
68f89ad8 MB |
963 | static void dapm_seq_check_event(struct snd_soc_dapm_context *dapm, |
964 | struct snd_soc_dapm_widget *w, int event) | |
965 | { | |
966 | struct snd_soc_card *card = dapm->card; | |
967 | const char *ev_name; | |
968 | int power, ret; | |
969 | ||
970 | switch (event) { | |
971 | case SND_SOC_DAPM_PRE_PMU: | |
972 | ev_name = "PRE_PMU"; | |
973 | power = 1; | |
974 | break; | |
975 | case SND_SOC_DAPM_POST_PMU: | |
976 | ev_name = "POST_PMU"; | |
977 | power = 1; | |
978 | break; | |
979 | case SND_SOC_DAPM_PRE_PMD: | |
980 | ev_name = "PRE_PMD"; | |
981 | power = 0; | |
982 | break; | |
983 | case SND_SOC_DAPM_POST_PMD: | |
984 | ev_name = "POST_PMD"; | |
985 | power = 0; | |
986 | break; | |
987 | default: | |
988 | BUG(); | |
989 | return; | |
990 | } | |
991 | ||
992 | if (w->power != power) | |
993 | return; | |
994 | ||
995 | if (w->event && (w->event_flags & event)) { | |
996 | pop_dbg(dapm->dev, card->pop_time, "pop test : %s %s\n", | |
997 | w->name, ev_name); | |
84e90930 | 998 | trace_snd_soc_dapm_widget_event_start(w, event); |
68f89ad8 | 999 | ret = w->event(w, NULL, event); |
84e90930 | 1000 | trace_snd_soc_dapm_widget_event_done(w, event); |
68f89ad8 MB |
1001 | if (ret < 0) |
1002 | pr_err("%s: %s event failed: %d\n", | |
1003 | ev_name, w->name, ret); | |
1004 | } | |
1005 | } | |
1006 | ||
b22ead2a | 1007 | /* Apply the coalesced changes from a DAPM sequence */ |
ce6120cc | 1008 | static void dapm_seq_run_coalesced(struct snd_soc_dapm_context *dapm, |
b22ead2a | 1009 | struct list_head *pending) |
163cac06 | 1010 | { |
3a45b867 | 1011 | struct snd_soc_card *card = dapm->card; |
68f89ad8 MB |
1012 | struct snd_soc_dapm_widget *w; |
1013 | int reg, power; | |
b22ead2a MB |
1014 | unsigned int value = 0; |
1015 | unsigned int mask = 0; | |
1016 | unsigned int cur_mask; | |
1017 | ||
1018 | reg = list_first_entry(pending, struct snd_soc_dapm_widget, | |
1019 | power_list)->reg; | |
1020 | ||
1021 | list_for_each_entry(w, pending, power_list) { | |
1022 | cur_mask = 1 << w->shift; | |
1023 | BUG_ON(reg != w->reg); | |
1024 | ||
1025 | if (w->invert) | |
1026 | power = !w->power; | |
1027 | else | |
1028 | power = w->power; | |
1029 | ||
1030 | mask |= cur_mask; | |
1031 | if (power) | |
1032 | value |= cur_mask; | |
1033 | ||
fd8d3bc0 | 1034 | pop_dbg(dapm->dev, card->pop_time, |
b22ead2a MB |
1035 | "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n", |
1036 | w->name, reg, value, mask); | |
81628103 | 1037 | |
68f89ad8 MB |
1038 | /* Check for events */ |
1039 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMU); | |
1040 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMD); | |
81628103 MB |
1041 | } |
1042 | ||
1043 | if (reg >= 0) { | |
29376bc7 MB |
1044 | /* Any widget will do, they should all be updating the |
1045 | * same register. | |
1046 | */ | |
1047 | w = list_first_entry(pending, struct snd_soc_dapm_widget, | |
1048 | power_list); | |
1049 | ||
fd8d3bc0 | 1050 | pop_dbg(dapm->dev, card->pop_time, |
81628103 | 1051 | "pop test : Applying 0x%x/0x%x to %x in %dms\n", |
3a45b867 JN |
1052 | value, mask, reg, card->pop_time); |
1053 | pop_wait(card->pop_time); | |
0445bdf4 | 1054 | soc_widget_update_bits(w, reg, mask, value); |
b22ead2a MB |
1055 | } |
1056 | ||
81628103 | 1057 | list_for_each_entry(w, pending, power_list) { |
68f89ad8 MB |
1058 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMU); |
1059 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMD); | |
81628103 | 1060 | } |
b22ead2a | 1061 | } |
42aa3418 | 1062 | |
b22ead2a MB |
1063 | /* Apply a DAPM power sequence. |
1064 | * | |
1065 | * We walk over a pre-sorted list of widgets to apply power to. In | |
1066 | * order to minimise the number of writes to the device required | |
1067 | * multiple widgets will be updated in a single write where possible. | |
1068 | * Currently anything that requires more than a single write is not | |
1069 | * handled. | |
1070 | */ | |
ce6120cc | 1071 | static void dapm_seq_run(struct snd_soc_dapm_context *dapm, |
828a842f | 1072 | struct list_head *list, int event, bool power_up) |
b22ead2a MB |
1073 | { |
1074 | struct snd_soc_dapm_widget *w, *n; | |
1075 | LIST_HEAD(pending); | |
1076 | int cur_sort = -1; | |
20e4859d | 1077 | int cur_subseq = -1; |
b22ead2a | 1078 | int cur_reg = SND_SOC_NOPM; |
7be31be8 | 1079 | struct snd_soc_dapm_context *cur_dapm = NULL; |
474b62d6 | 1080 | int ret, i; |
828a842f MB |
1081 | int *sort; |
1082 | ||
1083 | if (power_up) | |
1084 | sort = dapm_up_seq; | |
1085 | else | |
1086 | sort = dapm_down_seq; | |
163cac06 | 1087 | |
b22ead2a MB |
1088 | list_for_each_entry_safe(w, n, list, power_list) { |
1089 | ret = 0; | |
1090 | ||
1091 | /* Do we need to apply any queued changes? */ | |
7be31be8 | 1092 | if (sort[w->id] != cur_sort || w->reg != cur_reg || |
20e4859d | 1093 | w->dapm != cur_dapm || w->subseq != cur_subseq) { |
b22ead2a | 1094 | if (!list_empty(&pending)) |
7be31be8 | 1095 | dapm_seq_run_coalesced(cur_dapm, &pending); |
b22ead2a | 1096 | |
474b62d6 MB |
1097 | if (cur_dapm && cur_dapm->seq_notifier) { |
1098 | for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++) | |
1099 | if (sort[i] == cur_sort) | |
1100 | cur_dapm->seq_notifier(cur_dapm, | |
f85a9e0d MB |
1101 | i, |
1102 | cur_subseq); | |
474b62d6 MB |
1103 | } |
1104 | ||
b22ead2a MB |
1105 | INIT_LIST_HEAD(&pending); |
1106 | cur_sort = -1; | |
b0b3e6f8 | 1107 | cur_subseq = INT_MIN; |
b22ead2a | 1108 | cur_reg = SND_SOC_NOPM; |
7be31be8 | 1109 | cur_dapm = NULL; |
b22ead2a MB |
1110 | } |
1111 | ||
163cac06 MB |
1112 | switch (w->id) { |
1113 | case snd_soc_dapm_pre: | |
1114 | if (!w->event) | |
b22ead2a MB |
1115 | list_for_each_entry_safe_continue(w, n, list, |
1116 | power_list); | |
163cac06 | 1117 | |
b22ead2a | 1118 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
1119 | ret = w->event(w, |
1120 | NULL, SND_SOC_DAPM_PRE_PMU); | |
b22ead2a | 1121 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
1122 | ret = w->event(w, |
1123 | NULL, SND_SOC_DAPM_PRE_PMD); | |
163cac06 MB |
1124 | break; |
1125 | ||
1126 | case snd_soc_dapm_post: | |
1127 | if (!w->event) | |
b22ead2a MB |
1128 | list_for_each_entry_safe_continue(w, n, list, |
1129 | power_list); | |
163cac06 | 1130 | |
b22ead2a | 1131 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
1132 | ret = w->event(w, |
1133 | NULL, SND_SOC_DAPM_POST_PMU); | |
b22ead2a | 1134 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
1135 | ret = w->event(w, |
1136 | NULL, SND_SOC_DAPM_POST_PMD); | |
163cac06 MB |
1137 | break; |
1138 | ||
b22ead2a | 1139 | default: |
81628103 MB |
1140 | /* Queue it up for application */ |
1141 | cur_sort = sort[w->id]; | |
20e4859d | 1142 | cur_subseq = w->subseq; |
81628103 | 1143 | cur_reg = w->reg; |
7be31be8 | 1144 | cur_dapm = w->dapm; |
81628103 MB |
1145 | list_move(&w->power_list, &pending); |
1146 | break; | |
163cac06 | 1147 | } |
b22ead2a MB |
1148 | |
1149 | if (ret < 0) | |
f7d41ae8 JN |
1150 | dev_err(w->dapm->dev, |
1151 | "Failed to apply widget power: %d\n", ret); | |
6ea31b9f | 1152 | } |
b22ead2a MB |
1153 | |
1154 | if (!list_empty(&pending)) | |
28e86808 | 1155 | dapm_seq_run_coalesced(cur_dapm, &pending); |
474b62d6 MB |
1156 | |
1157 | if (cur_dapm && cur_dapm->seq_notifier) { | |
1158 | for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++) | |
1159 | if (sort[i] == cur_sort) | |
1160 | cur_dapm->seq_notifier(cur_dapm, | |
f85a9e0d | 1161 | i, cur_subseq); |
474b62d6 | 1162 | } |
42aa3418 MB |
1163 | } |
1164 | ||
97404f2e MB |
1165 | static void dapm_widget_update(struct snd_soc_dapm_context *dapm) |
1166 | { | |
1167 | struct snd_soc_dapm_update *update = dapm->update; | |
1168 | struct snd_soc_dapm_widget *w; | |
1169 | int ret; | |
1170 | ||
1171 | if (!update) | |
1172 | return; | |
1173 | ||
1174 | w = update->widget; | |
1175 | ||
1176 | if (w->event && | |
1177 | (w->event_flags & SND_SOC_DAPM_PRE_REG)) { | |
1178 | ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG); | |
1179 | if (ret != 0) | |
1180 | pr_err("%s DAPM pre-event failed: %d\n", | |
1181 | w->name, ret); | |
1182 | } | |
1183 | ||
1184 | ret = snd_soc_update_bits(w->codec, update->reg, update->mask, | |
1185 | update->val); | |
1186 | if (ret < 0) | |
1187 | pr_err("%s DAPM update failed: %d\n", w->name, ret); | |
1188 | ||
1189 | if (w->event && | |
1190 | (w->event_flags & SND_SOC_DAPM_POST_REG)) { | |
1191 | ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG); | |
1192 | if (ret != 0) | |
1193 | pr_err("%s DAPM post-event failed: %d\n", | |
1194 | w->name, ret); | |
1195 | } | |
1196 | } | |
1197 | ||
9d0624a7 MB |
1198 | /* Async callback run prior to DAPM sequences - brings to _PREPARE if |
1199 | * they're changing state. | |
1200 | */ | |
1201 | static void dapm_pre_sequence_async(void *data, async_cookie_t cookie) | |
1202 | { | |
1203 | struct snd_soc_dapm_context *d = data; | |
1204 | int ret; | |
1205 | ||
56fba41f MB |
1206 | /* If we're off and we're not supposed to be go into STANDBY */ |
1207 | if (d->bias_level == SND_SOC_BIAS_OFF && | |
1208 | d->target_bias_level != SND_SOC_BIAS_OFF) { | |
9d0624a7 MB |
1209 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY); |
1210 | if (ret != 0) | |
1211 | dev_err(d->dev, | |
1212 | "Failed to turn on bias: %d\n", ret); | |
1213 | } | |
1214 | ||
56fba41f MB |
1215 | /* Prepare for a STADDBY->ON or ON->STANDBY transition */ |
1216 | if (d->bias_level != d->target_bias_level) { | |
9d0624a7 MB |
1217 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE); |
1218 | if (ret != 0) | |
1219 | dev_err(d->dev, | |
1220 | "Failed to prepare bias: %d\n", ret); | |
1221 | } | |
1222 | } | |
1223 | ||
1224 | /* Async callback run prior to DAPM sequences - brings to their final | |
1225 | * state. | |
1226 | */ | |
1227 | static void dapm_post_sequence_async(void *data, async_cookie_t cookie) | |
1228 | { | |
1229 | struct snd_soc_dapm_context *d = data; | |
1230 | int ret; | |
1231 | ||
1232 | /* If we just powered the last thing off drop to standby bias */ | |
56fba41f MB |
1233 | if (d->bias_level == SND_SOC_BIAS_PREPARE && |
1234 | (d->target_bias_level == SND_SOC_BIAS_STANDBY || | |
1235 | d->target_bias_level == SND_SOC_BIAS_OFF)) { | |
9d0624a7 MB |
1236 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY); |
1237 | if (ret != 0) | |
1238 | dev_err(d->dev, "Failed to apply standby bias: %d\n", | |
1239 | ret); | |
1240 | } | |
97404f2e | 1241 | |
9d0624a7 | 1242 | /* If we're in standby and can support bias off then do that */ |
56fba41f MB |
1243 | if (d->bias_level == SND_SOC_BIAS_STANDBY && |
1244 | d->target_bias_level == SND_SOC_BIAS_OFF) { | |
9d0624a7 MB |
1245 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF); |
1246 | if (ret != 0) | |
1247 | dev_err(d->dev, "Failed to turn off bias: %d\n", ret); | |
1248 | } | |
1249 | ||
1250 | /* If we just powered up then move to active bias */ | |
56fba41f MB |
1251 | if (d->bias_level == SND_SOC_BIAS_PREPARE && |
1252 | d->target_bias_level == SND_SOC_BIAS_ON) { | |
9d0624a7 MB |
1253 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON); |
1254 | if (ret != 0) | |
1255 | dev_err(d->dev, "Failed to apply active bias: %d\n", | |
1256 | ret); | |
1257 | } | |
1258 | } | |
97404f2e | 1259 | |
fe4fda5d MB |
1260 | static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget *peer, |
1261 | bool power, bool connect) | |
1262 | { | |
1263 | /* If a connection is being made or broken then that update | |
1264 | * will have marked the peer dirty, otherwise the widgets are | |
1265 | * not connected and this update has no impact. */ | |
1266 | if (!connect) | |
1267 | return; | |
1268 | ||
1269 | /* If the peer is already in the state we're moving to then we | |
1270 | * won't have an impact on it. */ | |
1271 | if (power != peer->power) | |
75c1f891 | 1272 | dapm_mark_dirty(peer, "peer state change"); |
fe4fda5d MB |
1273 | } |
1274 | ||
05623c43 MB |
1275 | static void dapm_widget_set_power(struct snd_soc_dapm_widget *w, bool power, |
1276 | struct list_head *up_list, | |
1277 | struct list_head *down_list) | |
1278 | { | |
db432b41 MB |
1279 | struct snd_soc_dapm_path *path; |
1280 | ||
05623c43 MB |
1281 | if (w->power == power) |
1282 | return; | |
1283 | ||
1284 | trace_snd_soc_dapm_widget_power(w, power); | |
1285 | ||
db432b41 | 1286 | /* If we changed our power state perhaps our neigbours changed |
fe4fda5d | 1287 | * also. |
db432b41 MB |
1288 | */ |
1289 | list_for_each_entry(path, &w->sources, list_sink) { | |
1290 | if (path->source) { | |
fe4fda5d MB |
1291 | dapm_widget_set_peer_power(path->source, power, |
1292 | path->connect); | |
db432b41 MB |
1293 | } |
1294 | } | |
f3bf3e45 MB |
1295 | switch (w->id) { |
1296 | case snd_soc_dapm_supply: | |
1297 | /* Supplies can't affect their outputs, only their inputs */ | |
1298 | break; | |
1299 | default: | |
1300 | list_for_each_entry(path, &w->sinks, list_source) { | |
1301 | if (path->sink) { | |
1302 | dapm_widget_set_peer_power(path->sink, power, | |
1303 | path->connect); | |
1304 | } | |
db432b41 | 1305 | } |
f3bf3e45 | 1306 | break; |
db432b41 MB |
1307 | } |
1308 | ||
05623c43 MB |
1309 | if (power) |
1310 | dapm_seq_insert(w, up_list, true); | |
1311 | else | |
1312 | dapm_seq_insert(w, down_list, false); | |
1313 | ||
1314 | w->power = power; | |
1315 | } | |
1316 | ||
7c81beb0 MB |
1317 | static void dapm_power_one_widget(struct snd_soc_dapm_widget *w, |
1318 | struct list_head *up_list, | |
1319 | struct list_head *down_list) | |
1320 | { | |
7c81beb0 MB |
1321 | int power; |
1322 | ||
1323 | switch (w->id) { | |
1324 | case snd_soc_dapm_pre: | |
1325 | dapm_seq_insert(w, down_list, false); | |
1326 | break; | |
1327 | case snd_soc_dapm_post: | |
1328 | dapm_seq_insert(w, up_list, true); | |
1329 | break; | |
1330 | ||
1331 | default: | |
d805002b | 1332 | power = dapm_widget_power_check(w); |
7c81beb0 | 1333 | |
05623c43 | 1334 | dapm_widget_set_power(w, power, up_list, down_list); |
7c81beb0 MB |
1335 | break; |
1336 | } | |
1337 | } | |
1338 | ||
2b97eabc RP |
1339 | /* |
1340 | * Scan each dapm widget for complete audio path. | |
1341 | * A complete path is a route that has valid endpoints i.e.:- | |
1342 | * | |
1343 | * o DAC to output pin. | |
1344 | * o Input Pin to ADC. | |
1345 | * o Input pin to Output pin (bypass, sidetone) | |
1346 | * o DAC to ADC (loopback). | |
1347 | */ | |
ce6120cc | 1348 | static int dapm_power_widgets(struct snd_soc_dapm_context *dapm, int event) |
2b97eabc | 1349 | { |
12ea2c78 | 1350 | struct snd_soc_card *card = dapm->card; |
2b97eabc | 1351 | struct snd_soc_dapm_widget *w; |
7be31be8 | 1352 | struct snd_soc_dapm_context *d; |
291f3bbc MB |
1353 | LIST_HEAD(up_list); |
1354 | LIST_HEAD(down_list); | |
9d0624a7 | 1355 | LIST_HEAD(async_domain); |
56fba41f | 1356 | enum snd_soc_bias_level bias; |
6d3ddc81 | 1357 | |
84e90930 MB |
1358 | trace_snd_soc_dapm_start(card); |
1359 | ||
56fba41f MB |
1360 | list_for_each_entry(d, &card->dapm_list, list) { |
1361 | if (d->n_widgets || d->codec == NULL) { | |
1362 | if (d->idle_bias_off) | |
1363 | d->target_bias_level = SND_SOC_BIAS_OFF; | |
1364 | else | |
1365 | d->target_bias_level = SND_SOC_BIAS_STANDBY; | |
1366 | } | |
1367 | } | |
7be31be8 | 1368 | |
de02d078 MB |
1369 | memset(&card->dapm_stats, 0, sizeof(card->dapm_stats)); |
1370 | ||
9b8a83b2 MB |
1371 | list_for_each_entry(w, &card->widgets, list) { |
1372 | w->power_checked = false; | |
024dc078 MB |
1373 | w->inputs = -1; |
1374 | w->outputs = -1; | |
9b8a83b2 MB |
1375 | } |
1376 | ||
6d3ddc81 | 1377 | /* Check which widgets we need to power and store them in |
db432b41 MB |
1378 | * lists indicating if they should be powered up or down. We |
1379 | * only check widgets that have been flagged as dirty but note | |
1380 | * that new widgets may be added to the dirty list while we | |
1381 | * iterate. | |
6d3ddc81 | 1382 | */ |
db432b41 | 1383 | list_for_each_entry(w, &card->dapm_dirty, dirty) { |
7c81beb0 | 1384 | dapm_power_one_widget(w, &up_list, &down_list); |
2b97eabc RP |
1385 | } |
1386 | ||
f9de6d74 | 1387 | list_for_each_entry(w, &card->widgets, list) { |
db432b41 MB |
1388 | list_del_init(&w->dirty); |
1389 | ||
f9de6d74 MB |
1390 | if (w->power) { |
1391 | d = w->dapm; | |
1392 | ||
1393 | /* Supplies and micbiases only bring the | |
1394 | * context up to STANDBY as unless something | |
1395 | * else is active and passing audio they | |
1396 | * generally don't require full power. | |
1397 | */ | |
1398 | switch (w->id) { | |
1399 | case snd_soc_dapm_supply: | |
1400 | case snd_soc_dapm_micbias: | |
1401 | if (d->target_bias_level < SND_SOC_BIAS_STANDBY) | |
1402 | d->target_bias_level = SND_SOC_BIAS_STANDBY; | |
1403 | break; | |
1404 | default: | |
1405 | d->target_bias_level = SND_SOC_BIAS_ON; | |
1406 | break; | |
1407 | } | |
1408 | } | |
1409 | ||
1410 | } | |
1411 | ||
b14b76a5 MB |
1412 | /* If there are no DAPM widgets then try to figure out power from the |
1413 | * event type. | |
1414 | */ | |
97c866de | 1415 | if (!dapm->n_widgets) { |
b14b76a5 MB |
1416 | switch (event) { |
1417 | case SND_SOC_DAPM_STREAM_START: | |
1418 | case SND_SOC_DAPM_STREAM_RESUME: | |
56fba41f | 1419 | dapm->target_bias_level = SND_SOC_BIAS_ON; |
b14b76a5 | 1420 | break; |
862af8ad | 1421 | case SND_SOC_DAPM_STREAM_STOP: |
56fba41f MB |
1422 | if (dapm->codec->active) |
1423 | dapm->target_bias_level = SND_SOC_BIAS_ON; | |
1424 | else | |
1425 | dapm->target_bias_level = SND_SOC_BIAS_STANDBY; | |
862af8ad | 1426 | break; |
50b6bce5 | 1427 | case SND_SOC_DAPM_STREAM_SUSPEND: |
56fba41f | 1428 | dapm->target_bias_level = SND_SOC_BIAS_STANDBY; |
50b6bce5 | 1429 | break; |
b14b76a5 | 1430 | case SND_SOC_DAPM_STREAM_NOP: |
56fba41f | 1431 | dapm->target_bias_level = dapm->bias_level; |
50b6bce5 | 1432 | break; |
b14b76a5 MB |
1433 | default: |
1434 | break; | |
1435 | } | |
1436 | } | |
1437 | ||
85a843c5 MB |
1438 | /* Force all contexts in the card to the same bias state if |
1439 | * they're not ground referenced. | |
1440 | */ | |
56fba41f | 1441 | bias = SND_SOC_BIAS_OFF; |
52ba67bf | 1442 | list_for_each_entry(d, &card->dapm_list, list) |
56fba41f MB |
1443 | if (d->target_bias_level > bias) |
1444 | bias = d->target_bias_level; | |
52ba67bf | 1445 | list_for_each_entry(d, &card->dapm_list, list) |
85a843c5 MB |
1446 | if (!d->idle_bias_off) |
1447 | d->target_bias_level = bias; | |
52ba67bf | 1448 | |
de02d078 | 1449 | trace_snd_soc_dapm_walk_done(card); |
52ba67bf | 1450 | |
9d0624a7 MB |
1451 | /* Run all the bias changes in parallel */ |
1452 | list_for_each_entry(d, &dapm->card->dapm_list, list) | |
1453 | async_schedule_domain(dapm_pre_sequence_async, d, | |
1454 | &async_domain); | |
1455 | async_synchronize_full_domain(&async_domain); | |
452c5eaa | 1456 | |
6d3ddc81 | 1457 | /* Power down widgets first; try to avoid amplifying pops. */ |
828a842f | 1458 | dapm_seq_run(dapm, &down_list, event, false); |
2b97eabc | 1459 | |
97404f2e MB |
1460 | dapm_widget_update(dapm); |
1461 | ||
6d3ddc81 | 1462 | /* Now power up. */ |
828a842f | 1463 | dapm_seq_run(dapm, &up_list, event, true); |
2b97eabc | 1464 | |
9d0624a7 MB |
1465 | /* Run all the bias changes in parallel */ |
1466 | list_for_each_entry(d, &dapm->card->dapm_list, list) | |
1467 | async_schedule_domain(dapm_post_sequence_async, d, | |
1468 | &async_domain); | |
1469 | async_synchronize_full_domain(&async_domain); | |
452c5eaa | 1470 | |
fd8d3bc0 JN |
1471 | pop_dbg(dapm->dev, card->pop_time, |
1472 | "DAPM sequencing finished, waiting %dms\n", card->pop_time); | |
3a45b867 | 1473 | pop_wait(card->pop_time); |
cb507e7e | 1474 | |
84e90930 MB |
1475 | trace_snd_soc_dapm_done(card); |
1476 | ||
42aa3418 | 1477 | return 0; |
2b97eabc RP |
1478 | } |
1479 | ||
79fb9387 MB |
1480 | #ifdef CONFIG_DEBUG_FS |
1481 | static int dapm_widget_power_open_file(struct inode *inode, struct file *file) | |
1482 | { | |
1483 | file->private_data = inode->i_private; | |
1484 | return 0; | |
1485 | } | |
1486 | ||
1487 | static ssize_t dapm_widget_power_read_file(struct file *file, | |
1488 | char __user *user_buf, | |
1489 | size_t count, loff_t *ppos) | |
1490 | { | |
1491 | struct snd_soc_dapm_widget *w = file->private_data; | |
1492 | char *buf; | |
1493 | int in, out; | |
1494 | ssize_t ret; | |
1495 | struct snd_soc_dapm_path *p = NULL; | |
1496 | ||
1497 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); | |
1498 | if (!buf) | |
1499 | return -ENOMEM; | |
1500 | ||
1501 | in = is_connected_input_ep(w); | |
ce6120cc | 1502 | dapm_clear_walk(w->dapm); |
79fb9387 | 1503 | out = is_connected_output_ep(w); |
ce6120cc | 1504 | dapm_clear_walk(w->dapm); |
79fb9387 | 1505 | |
d033c36a | 1506 | ret = snprintf(buf, PAGE_SIZE, "%s: %s in %d out %d", |
79fb9387 MB |
1507 | w->name, w->power ? "On" : "Off", in, out); |
1508 | ||
d033c36a MB |
1509 | if (w->reg >= 0) |
1510 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
1511 | " - R%d(0x%x) bit %d", | |
1512 | w->reg, w->reg, w->shift); | |
1513 | ||
1514 | ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n"); | |
1515 | ||
3eef08ba MB |
1516 | if (w->sname) |
1517 | ret += snprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n", | |
1518 | w->sname, | |
1519 | w->active ? "active" : "inactive"); | |
79fb9387 MB |
1520 | |
1521 | list_for_each_entry(p, &w->sources, list_sink) { | |
215edda3 MB |
1522 | if (p->connected && !p->connected(w, p->sink)) |
1523 | continue; | |
1524 | ||
79fb9387 MB |
1525 | if (p->connect) |
1526 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
67f5ed6e | 1527 | " in \"%s\" \"%s\"\n", |
79fb9387 MB |
1528 | p->name ? p->name : "static", |
1529 | p->source->name); | |
1530 | } | |
1531 | list_for_each_entry(p, &w->sinks, list_source) { | |
215edda3 MB |
1532 | if (p->connected && !p->connected(w, p->sink)) |
1533 | continue; | |
1534 | ||
79fb9387 MB |
1535 | if (p->connect) |
1536 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
67f5ed6e | 1537 | " out \"%s\" \"%s\"\n", |
79fb9387 MB |
1538 | p->name ? p->name : "static", |
1539 | p->sink->name); | |
1540 | } | |
1541 | ||
1542 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); | |
1543 | ||
1544 | kfree(buf); | |
1545 | return ret; | |
1546 | } | |
1547 | ||
1548 | static const struct file_operations dapm_widget_power_fops = { | |
1549 | .open = dapm_widget_power_open_file, | |
1550 | .read = dapm_widget_power_read_file, | |
6038f373 | 1551 | .llseek = default_llseek, |
79fb9387 MB |
1552 | }; |
1553 | ||
ef49e4fa MB |
1554 | static int dapm_bias_open_file(struct inode *inode, struct file *file) |
1555 | { | |
1556 | file->private_data = inode->i_private; | |
1557 | return 0; | |
1558 | } | |
1559 | ||
1560 | static ssize_t dapm_bias_read_file(struct file *file, char __user *user_buf, | |
1561 | size_t count, loff_t *ppos) | |
1562 | { | |
1563 | struct snd_soc_dapm_context *dapm = file->private_data; | |
1564 | char *level; | |
1565 | ||
1566 | switch (dapm->bias_level) { | |
1567 | case SND_SOC_BIAS_ON: | |
1568 | level = "On\n"; | |
1569 | break; | |
1570 | case SND_SOC_BIAS_PREPARE: | |
1571 | level = "Prepare\n"; | |
1572 | break; | |
1573 | case SND_SOC_BIAS_STANDBY: | |
1574 | level = "Standby\n"; | |
1575 | break; | |
1576 | case SND_SOC_BIAS_OFF: | |
1577 | level = "Off\n"; | |
1578 | break; | |
1579 | default: | |
1580 | BUG(); | |
1581 | level = "Unknown\n"; | |
1582 | break; | |
1583 | } | |
1584 | ||
1585 | return simple_read_from_buffer(user_buf, count, ppos, level, | |
1586 | strlen(level)); | |
1587 | } | |
1588 | ||
1589 | static const struct file_operations dapm_bias_fops = { | |
1590 | .open = dapm_bias_open_file, | |
1591 | .read = dapm_bias_read_file, | |
1592 | .llseek = default_llseek, | |
1593 | }; | |
1594 | ||
8eecaf62 LPC |
1595 | void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm, |
1596 | struct dentry *parent) | |
79fb9387 | 1597 | { |
79fb9387 MB |
1598 | struct dentry *d; |
1599 | ||
8eecaf62 LPC |
1600 | dapm->debugfs_dapm = debugfs_create_dir("dapm", parent); |
1601 | ||
1602 | if (!dapm->debugfs_dapm) { | |
1603 | printk(KERN_WARNING | |
1604 | "Failed to create DAPM debugfs directory\n"); | |
79fb9387 | 1605 | return; |
8eecaf62 | 1606 | } |
79fb9387 | 1607 | |
ef49e4fa MB |
1608 | d = debugfs_create_file("bias_level", 0444, |
1609 | dapm->debugfs_dapm, dapm, | |
1610 | &dapm_bias_fops); | |
1611 | if (!d) | |
1612 | dev_warn(dapm->dev, | |
1613 | "ASoC: Failed to create bias level debugfs file\n"); | |
d5d1e0be | 1614 | } |
ef49e4fa | 1615 | |
d5d1e0be LPC |
1616 | static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w) |
1617 | { | |
1618 | struct snd_soc_dapm_context *dapm = w->dapm; | |
1619 | struct dentry *d; | |
79fb9387 | 1620 | |
d5d1e0be LPC |
1621 | if (!dapm->debugfs_dapm || !w->name) |
1622 | return; | |
1623 | ||
1624 | d = debugfs_create_file(w->name, 0444, | |
1625 | dapm->debugfs_dapm, w, | |
1626 | &dapm_widget_power_fops); | |
1627 | if (!d) | |
1628 | dev_warn(w->dapm->dev, | |
1629 | "ASoC: Failed to create %s debugfs file\n", | |
1630 | w->name); | |
79fb9387 | 1631 | } |
d5d1e0be | 1632 | |
6c45e126 LPC |
1633 | static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm) |
1634 | { | |
1635 | debugfs_remove_recursive(dapm->debugfs_dapm); | |
1636 | } | |
1637 | ||
79fb9387 | 1638 | #else |
8eecaf62 LPC |
1639 | void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm, |
1640 | struct dentry *parent) | |
79fb9387 MB |
1641 | { |
1642 | } | |
d5d1e0be LPC |
1643 | |
1644 | static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w) | |
1645 | { | |
1646 | } | |
1647 | ||
6c45e126 LPC |
1648 | static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm) |
1649 | { | |
1650 | } | |
1651 | ||
79fb9387 MB |
1652 | #endif |
1653 | ||
2b97eabc | 1654 | /* test and update the power status of a mux widget */ |
d9c96cf3 | 1655 | static int dapm_mux_update_power(struct snd_soc_dapm_widget *widget, |
3a65577d MB |
1656 | struct snd_kcontrol *kcontrol, int change, |
1657 | int mux, struct soc_enum *e) | |
2b97eabc RP |
1658 | { |
1659 | struct snd_soc_dapm_path *path; | |
1660 | int found = 0; | |
1661 | ||
eff317d0 | 1662 | if (widget->id != snd_soc_dapm_mux && |
24ff33ac | 1663 | widget->id != snd_soc_dapm_virt_mux && |
eff317d0 | 1664 | widget->id != snd_soc_dapm_value_mux) |
2b97eabc RP |
1665 | return -ENODEV; |
1666 | ||
3a65577d | 1667 | if (!change) |
2b97eabc RP |
1668 | return 0; |
1669 | ||
1670 | /* find dapm widget path assoc with kcontrol */ | |
8ddab3f5 | 1671 | list_for_each_entry(path, &widget->dapm->card->paths, list) { |
2b97eabc RP |
1672 | if (path->kcontrol != kcontrol) |
1673 | continue; | |
1674 | ||
cb01e2b9 | 1675 | if (!path->name || !e->texts[mux]) |
2b97eabc RP |
1676 | continue; |
1677 | ||
1678 | found = 1; | |
1679 | /* we now need to match the string in the enum to the path */ | |
db432b41 | 1680 | if (!(strcmp(path->name, e->texts[mux]))) { |
2b97eabc | 1681 | path->connect = 1; /* new connection */ |
75c1f891 | 1682 | dapm_mark_dirty(path->source, "mux connection"); |
db432b41 MB |
1683 | } else { |
1684 | if (path->connect) | |
75c1f891 MB |
1685 | dapm_mark_dirty(path->source, |
1686 | "mux disconnection"); | |
2b97eabc | 1687 | path->connect = 0; /* old connection must be powered down */ |
db432b41 | 1688 | } |
2b97eabc RP |
1689 | } |
1690 | ||
db432b41 | 1691 | if (found) { |
75c1f891 | 1692 | dapm_mark_dirty(widget, "mux change"); |
ce6120cc | 1693 | dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP); |
db432b41 | 1694 | } |
2b97eabc RP |
1695 | |
1696 | return 0; | |
1697 | } | |
2b97eabc | 1698 | |
1b075e3f | 1699 | /* test and update the power status of a mixer or switch widget */ |
d9c96cf3 | 1700 | static int dapm_mixer_update_power(struct snd_soc_dapm_widget *widget, |
283375ce | 1701 | struct snd_kcontrol *kcontrol, int connect) |
2b97eabc RP |
1702 | { |
1703 | struct snd_soc_dapm_path *path; | |
1704 | int found = 0; | |
1705 | ||
1b075e3f | 1706 | if (widget->id != snd_soc_dapm_mixer && |
ca9c1aae | 1707 | widget->id != snd_soc_dapm_mixer_named_ctl && |
1b075e3f | 1708 | widget->id != snd_soc_dapm_switch) |
2b97eabc RP |
1709 | return -ENODEV; |
1710 | ||
2b97eabc | 1711 | /* find dapm widget path assoc with kcontrol */ |
8ddab3f5 | 1712 | list_for_each_entry(path, &widget->dapm->card->paths, list) { |
2b97eabc RP |
1713 | if (path->kcontrol != kcontrol) |
1714 | continue; | |
1715 | ||
1716 | /* found, now check type */ | |
1717 | found = 1; | |
283375ce | 1718 | path->connect = connect; |
75c1f891 | 1719 | dapm_mark_dirty(path->source, "mixer connection"); |
2b97eabc RP |
1720 | } |
1721 | ||
db432b41 | 1722 | if (found) { |
75c1f891 | 1723 | dapm_mark_dirty(widget, "mixer update"); |
ce6120cc | 1724 | dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP); |
db432b41 | 1725 | } |
2b97eabc RP |
1726 | |
1727 | return 0; | |
1728 | } | |
2b97eabc RP |
1729 | |
1730 | /* show dapm widget status in sys fs */ | |
1731 | static ssize_t dapm_widget_show(struct device *dev, | |
1732 | struct device_attribute *attr, char *buf) | |
1733 | { | |
f0fba2ad LG |
1734 | struct snd_soc_pcm_runtime *rtd = |
1735 | container_of(dev, struct snd_soc_pcm_runtime, dev); | |
1736 | struct snd_soc_codec *codec =rtd->codec; | |
2b97eabc RP |
1737 | struct snd_soc_dapm_widget *w; |
1738 | int count = 0; | |
1739 | char *state = "not set"; | |
1740 | ||
97c866de JN |
1741 | list_for_each_entry(w, &codec->card->widgets, list) { |
1742 | if (w->dapm != &codec->dapm) | |
1743 | continue; | |
2b97eabc RP |
1744 | |
1745 | /* only display widgets that burnm power */ | |
1746 | switch (w->id) { | |
1747 | case snd_soc_dapm_hp: | |
1748 | case snd_soc_dapm_mic: | |
1749 | case snd_soc_dapm_spk: | |
1750 | case snd_soc_dapm_line: | |
1751 | case snd_soc_dapm_micbias: | |
1752 | case snd_soc_dapm_dac: | |
1753 | case snd_soc_dapm_adc: | |
1754 | case snd_soc_dapm_pga: | |
d88429a6 | 1755 | case snd_soc_dapm_out_drv: |
2b97eabc | 1756 | case snd_soc_dapm_mixer: |
ca9c1aae | 1757 | case snd_soc_dapm_mixer_named_ctl: |
246d0a17 | 1758 | case snd_soc_dapm_supply: |
2b97eabc RP |
1759 | if (w->name) |
1760 | count += sprintf(buf + count, "%s: %s\n", | |
1761 | w->name, w->power ? "On":"Off"); | |
1762 | break; | |
1763 | default: | |
1764 | break; | |
1765 | } | |
1766 | } | |
1767 | ||
ce6120cc | 1768 | switch (codec->dapm.bias_level) { |
0be9898a MB |
1769 | case SND_SOC_BIAS_ON: |
1770 | state = "On"; | |
2b97eabc | 1771 | break; |
0be9898a MB |
1772 | case SND_SOC_BIAS_PREPARE: |
1773 | state = "Prepare"; | |
2b97eabc | 1774 | break; |
0be9898a MB |
1775 | case SND_SOC_BIAS_STANDBY: |
1776 | state = "Standby"; | |
2b97eabc | 1777 | break; |
0be9898a MB |
1778 | case SND_SOC_BIAS_OFF: |
1779 | state = "Off"; | |
2b97eabc RP |
1780 | break; |
1781 | } | |
1782 | count += sprintf(buf + count, "PM State: %s\n", state); | |
1783 | ||
1784 | return count; | |
1785 | } | |
1786 | ||
1787 | static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL); | |
1788 | ||
1789 | int snd_soc_dapm_sys_add(struct device *dev) | |
1790 | { | |
12ef193d | 1791 | return device_create_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1792 | } |
1793 | ||
1794 | static void snd_soc_dapm_sys_remove(struct device *dev) | |
1795 | { | |
aef90843 | 1796 | device_remove_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1797 | } |
1798 | ||
1799 | /* free all dapm widgets and resources */ | |
ce6120cc | 1800 | static void dapm_free_widgets(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
1801 | { |
1802 | struct snd_soc_dapm_widget *w, *next_w; | |
1803 | struct snd_soc_dapm_path *p, *next_p; | |
1804 | ||
97c866de JN |
1805 | list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) { |
1806 | if (w->dapm != dapm) | |
1807 | continue; | |
2b97eabc | 1808 | list_del(&w->list); |
8ddab3f5 JN |
1809 | /* |
1810 | * remove source and sink paths associated to this widget. | |
1811 | * While removing the path, remove reference to it from both | |
1812 | * source and sink widgets so that path is removed only once. | |
1813 | */ | |
1814 | list_for_each_entry_safe(p, next_p, &w->sources, list_sink) { | |
1815 | list_del(&p->list_sink); | |
1816 | list_del(&p->list_source); | |
1817 | list_del(&p->list); | |
1818 | kfree(p->long_name); | |
1819 | kfree(p); | |
1820 | } | |
1821 | list_for_each_entry_safe(p, next_p, &w->sinks, list_source) { | |
1822 | list_del(&p->list_sink); | |
1823 | list_del(&p->list_source); | |
1824 | list_del(&p->list); | |
1825 | kfree(p->long_name); | |
1826 | kfree(p); | |
1827 | } | |
fad59888 | 1828 | kfree(w->kcontrols); |
ead9b919 | 1829 | kfree(w->name); |
2b97eabc RP |
1830 | kfree(w); |
1831 | } | |
2b97eabc RP |
1832 | } |
1833 | ||
91a5fca4 LPC |
1834 | static struct snd_soc_dapm_widget *dapm_find_widget( |
1835 | struct snd_soc_dapm_context *dapm, const char *pin, | |
1836 | bool search_other_contexts) | |
a5302181 LG |
1837 | { |
1838 | struct snd_soc_dapm_widget *w; | |
91a5fca4 | 1839 | struct snd_soc_dapm_widget *fallback = NULL; |
a5302181 | 1840 | |
97c866de | 1841 | list_for_each_entry(w, &dapm->card->widgets, list) { |
a5302181 | 1842 | if (!strcmp(w->name, pin)) { |
91a5fca4 LPC |
1843 | if (w->dapm == dapm) |
1844 | return w; | |
1845 | else | |
1846 | fallback = w; | |
a5302181 LG |
1847 | } |
1848 | } | |
1849 | ||
91a5fca4 LPC |
1850 | if (search_other_contexts) |
1851 | return fallback; | |
1852 | ||
1853 | return NULL; | |
1854 | } | |
1855 | ||
1856 | static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm, | |
1857 | const char *pin, int status) | |
1858 | { | |
1859 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); | |
1860 | ||
1861 | if (!w) { | |
1862 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); | |
1863 | return -EINVAL; | |
0d86733c MB |
1864 | } |
1865 | ||
91a5fca4 LPC |
1866 | w->connected = status; |
1867 | if (status == 0) | |
1868 | w->force = 0; | |
75c1f891 | 1869 | dapm_mark_dirty(w, "pin configuration"); |
91a5fca4 LPC |
1870 | |
1871 | return 0; | |
a5302181 LG |
1872 | } |
1873 | ||
2b97eabc | 1874 | /** |
a5302181 | 1875 | * snd_soc_dapm_sync - scan and power dapm paths |
ce6120cc | 1876 | * @dapm: DAPM context |
2b97eabc RP |
1877 | * |
1878 | * Walks all dapm audio paths and powers widgets according to their | |
1879 | * stream or path usage. | |
1880 | * | |
1881 | * Returns 0 for success. | |
1882 | */ | |
ce6120cc | 1883 | int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm) |
2b97eabc | 1884 | { |
4f4c0072 MB |
1885 | /* |
1886 | * Suppress early reports (eg, jacks syncing their state) to avoid | |
1887 | * silly DAPM runs during card startup. | |
1888 | */ | |
1889 | if (!dapm->card || !dapm->card->instantiated) | |
1890 | return 0; | |
1891 | ||
ce6120cc | 1892 | return dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc | 1893 | } |
a5302181 | 1894 | EXPORT_SYMBOL_GPL(snd_soc_dapm_sync); |
2b97eabc | 1895 | |
ce6120cc | 1896 | static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm, |
215edda3 | 1897 | const struct snd_soc_dapm_route *route) |
2b97eabc RP |
1898 | { |
1899 | struct snd_soc_dapm_path *path; | |
1900 | struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w; | |
97c866de | 1901 | struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL; |
ead9b919 | 1902 | const char *sink; |
215edda3 | 1903 | const char *control = route->control; |
ead9b919 JN |
1904 | const char *source; |
1905 | char prefixed_sink[80]; | |
1906 | char prefixed_source[80]; | |
2b97eabc RP |
1907 | int ret = 0; |
1908 | ||
88e8b9a8 | 1909 | if (dapm->codec && dapm->codec->name_prefix) { |
ead9b919 JN |
1910 | snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s", |
1911 | dapm->codec->name_prefix, route->sink); | |
1912 | sink = prefixed_sink; | |
1913 | snprintf(prefixed_source, sizeof(prefixed_source), "%s %s", | |
1914 | dapm->codec->name_prefix, route->source); | |
1915 | source = prefixed_source; | |
1916 | } else { | |
1917 | sink = route->sink; | |
1918 | source = route->source; | |
1919 | } | |
1920 | ||
97c866de JN |
1921 | /* |
1922 | * find src and dest widgets over all widgets but favor a widget from | |
1923 | * current DAPM context | |
1924 | */ | |
1925 | list_for_each_entry(w, &dapm->card->widgets, list) { | |
2b97eabc | 1926 | if (!wsink && !(strcmp(w->name, sink))) { |
97c866de JN |
1927 | wtsink = w; |
1928 | if (w->dapm == dapm) | |
1929 | wsink = w; | |
2b97eabc RP |
1930 | continue; |
1931 | } | |
1932 | if (!wsource && !(strcmp(w->name, source))) { | |
97c866de JN |
1933 | wtsource = w; |
1934 | if (w->dapm == dapm) | |
1935 | wsource = w; | |
2b97eabc RP |
1936 | } |
1937 | } | |
97c866de JN |
1938 | /* use widget from another DAPM context if not found from this */ |
1939 | if (!wsink) | |
1940 | wsink = wtsink; | |
1941 | if (!wsource) | |
1942 | wsource = wtsource; | |
2b97eabc RP |
1943 | |
1944 | if (wsource == NULL || wsink == NULL) | |
1945 | return -ENODEV; | |
1946 | ||
1947 | path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL); | |
1948 | if (!path) | |
1949 | return -ENOMEM; | |
1950 | ||
1951 | path->source = wsource; | |
1952 | path->sink = wsink; | |
215edda3 | 1953 | path->connected = route->connected; |
2b97eabc RP |
1954 | INIT_LIST_HEAD(&path->list); |
1955 | INIT_LIST_HEAD(&path->list_source); | |
1956 | INIT_LIST_HEAD(&path->list_sink); | |
1957 | ||
1958 | /* check for external widgets */ | |
1959 | if (wsink->id == snd_soc_dapm_input) { | |
1960 | if (wsource->id == snd_soc_dapm_micbias || | |
1961 | wsource->id == snd_soc_dapm_mic || | |
087d53ab RC |
1962 | wsource->id == snd_soc_dapm_line || |
1963 | wsource->id == snd_soc_dapm_output) | |
2b97eabc RP |
1964 | wsink->ext = 1; |
1965 | } | |
1966 | if (wsource->id == snd_soc_dapm_output) { | |
1967 | if (wsink->id == snd_soc_dapm_spk || | |
1968 | wsink->id == snd_soc_dapm_hp || | |
1e39221e SF |
1969 | wsink->id == snd_soc_dapm_line || |
1970 | wsink->id == snd_soc_dapm_input) | |
2b97eabc RP |
1971 | wsource->ext = 1; |
1972 | } | |
1973 | ||
1974 | /* connect static paths */ | |
1975 | if (control == NULL) { | |
8ddab3f5 | 1976 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
1977 | list_add(&path->list_sink, &wsink->sources); |
1978 | list_add(&path->list_source, &wsource->sinks); | |
1979 | path->connect = 1; | |
1980 | return 0; | |
1981 | } | |
1982 | ||
1983 | /* connect dynamic paths */ | |
dc2bea61 | 1984 | switch (wsink->id) { |
2b97eabc RP |
1985 | case snd_soc_dapm_adc: |
1986 | case snd_soc_dapm_dac: | |
1987 | case snd_soc_dapm_pga: | |
d88429a6 | 1988 | case snd_soc_dapm_out_drv: |
2b97eabc RP |
1989 | case snd_soc_dapm_input: |
1990 | case snd_soc_dapm_output: | |
1ab97c8c | 1991 | case snd_soc_dapm_siggen: |
2b97eabc RP |
1992 | case snd_soc_dapm_micbias: |
1993 | case snd_soc_dapm_vmid: | |
1994 | case snd_soc_dapm_pre: | |
1995 | case snd_soc_dapm_post: | |
246d0a17 | 1996 | case snd_soc_dapm_supply: |
010ff262 MB |
1997 | case snd_soc_dapm_aif_in: |
1998 | case snd_soc_dapm_aif_out: | |
8ddab3f5 | 1999 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
2000 | list_add(&path->list_sink, &wsink->sources); |
2001 | list_add(&path->list_source, &wsource->sinks); | |
2002 | path->connect = 1; | |
2003 | return 0; | |
2004 | case snd_soc_dapm_mux: | |
24ff33ac | 2005 | case snd_soc_dapm_virt_mux: |
74155556 | 2006 | case snd_soc_dapm_value_mux: |
ce6120cc | 2007 | ret = dapm_connect_mux(dapm, wsource, wsink, path, control, |
82cfecdc | 2008 | &wsink->kcontrol_news[0]); |
2b97eabc RP |
2009 | if (ret != 0) |
2010 | goto err; | |
2011 | break; | |
2012 | case snd_soc_dapm_switch: | |
2013 | case snd_soc_dapm_mixer: | |
ca9c1aae | 2014 | case snd_soc_dapm_mixer_named_ctl: |
ce6120cc | 2015 | ret = dapm_connect_mixer(dapm, wsource, wsink, path, control); |
2b97eabc RP |
2016 | if (ret != 0) |
2017 | goto err; | |
2018 | break; | |
2019 | case snd_soc_dapm_hp: | |
2020 | case snd_soc_dapm_mic: | |
2021 | case snd_soc_dapm_line: | |
2022 | case snd_soc_dapm_spk: | |
8ddab3f5 | 2023 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
2024 | list_add(&path->list_sink, &wsink->sources); |
2025 | list_add(&path->list_source, &wsource->sinks); | |
2026 | path->connect = 0; | |
2027 | return 0; | |
2028 | } | |
2029 | return 0; | |
2030 | ||
2031 | err: | |
f7d41ae8 JN |
2032 | dev_warn(dapm->dev, "asoc: no dapm match for %s --> %s --> %s\n", |
2033 | source, control, sink); | |
2b97eabc RP |
2034 | kfree(path); |
2035 | return ret; | |
2036 | } | |
105f1c28 | 2037 | |
105f1c28 MB |
2038 | /** |
2039 | * snd_soc_dapm_add_routes - Add routes between DAPM widgets | |
ce6120cc | 2040 | * @dapm: DAPM context |
105f1c28 MB |
2041 | * @route: audio routes |
2042 | * @num: number of routes | |
2043 | * | |
2044 | * Connects 2 dapm widgets together via a named audio path. The sink is | |
2045 | * the widget receiving the audio signal, whilst the source is the sender | |
2046 | * of the audio signal. | |
2047 | * | |
2048 | * Returns 0 for success else error. On error all resources can be freed | |
2049 | * with a call to snd_soc_card_free(). | |
2050 | */ | |
ce6120cc | 2051 | int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm, |
105f1c28 MB |
2052 | const struct snd_soc_dapm_route *route, int num) |
2053 | { | |
2054 | int i, ret; | |
2055 | ||
2056 | for (i = 0; i < num; i++) { | |
ce6120cc | 2057 | ret = snd_soc_dapm_add_route(dapm, route); |
105f1c28 | 2058 | if (ret < 0) { |
f7d41ae8 JN |
2059 | dev_err(dapm->dev, "Failed to add route %s->%s\n", |
2060 | route->source, route->sink); | |
105f1c28 MB |
2061 | return ret; |
2062 | } | |
2063 | route++; | |
2064 | } | |
2065 | ||
2066 | return 0; | |
2067 | } | |
2068 | EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes); | |
2069 | ||
bf3a9e13 MB |
2070 | static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context *dapm, |
2071 | const struct snd_soc_dapm_route *route) | |
2072 | { | |
2073 | struct snd_soc_dapm_widget *source = dapm_find_widget(dapm, | |
2074 | route->source, | |
2075 | true); | |
2076 | struct snd_soc_dapm_widget *sink = dapm_find_widget(dapm, | |
2077 | route->sink, | |
2078 | true); | |
2079 | struct snd_soc_dapm_path *path; | |
2080 | int count = 0; | |
2081 | ||
2082 | if (!source) { | |
2083 | dev_err(dapm->dev, "Unable to find source %s for weak route\n", | |
2084 | route->source); | |
2085 | return -ENODEV; | |
2086 | } | |
2087 | ||
2088 | if (!sink) { | |
2089 | dev_err(dapm->dev, "Unable to find sink %s for weak route\n", | |
2090 | route->sink); | |
2091 | return -ENODEV; | |
2092 | } | |
2093 | ||
2094 | if (route->control || route->connected) | |
2095 | dev_warn(dapm->dev, "Ignoring control for weak route %s->%s\n", | |
2096 | route->source, route->sink); | |
2097 | ||
2098 | list_for_each_entry(path, &source->sinks, list_source) { | |
2099 | if (path->sink == sink) { | |
2100 | path->weak = 1; | |
2101 | count++; | |
2102 | } | |
2103 | } | |
2104 | ||
2105 | if (count == 0) | |
2106 | dev_err(dapm->dev, "No path found for weak route %s->%s\n", | |
2107 | route->source, route->sink); | |
2108 | if (count > 1) | |
2109 | dev_warn(dapm->dev, "%d paths found for weak route %s->%s\n", | |
2110 | count, route->source, route->sink); | |
2111 | ||
2112 | return 0; | |
2113 | } | |
2114 | ||
2115 | /** | |
2116 | * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak | |
2117 | * @dapm: DAPM context | |
2118 | * @route: audio routes | |
2119 | * @num: number of routes | |
2120 | * | |
2121 | * Mark existing routes matching those specified in the passed array | |
2122 | * as being weak, meaning that they are ignored for the purpose of | |
2123 | * power decisions. The main intended use case is for sidetone paths | |
2124 | * which couple audio between other independent paths if they are both | |
2125 | * active in order to make the combination work better at the user | |
2126 | * level but which aren't intended to be "used". | |
2127 | * | |
2128 | * Note that CODEC drivers should not use this as sidetone type paths | |
2129 | * can frequently also be used as bypass paths. | |
2130 | */ | |
2131 | int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context *dapm, | |
2132 | const struct snd_soc_dapm_route *route, int num) | |
2133 | { | |
2134 | int i, err; | |
2135 | int ret = 0; | |
2136 | ||
2137 | for (i = 0; i < num; i++) { | |
2138 | err = snd_soc_dapm_weak_route(dapm, route); | |
2139 | if (err) | |
2140 | ret = err; | |
2141 | route++; | |
2142 | } | |
2143 | ||
2144 | return ret; | |
2145 | } | |
2146 | EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes); | |
2147 | ||
2b97eabc RP |
2148 | /** |
2149 | * snd_soc_dapm_new_widgets - add new dapm widgets | |
ce6120cc | 2150 | * @dapm: DAPM context |
2b97eabc RP |
2151 | * |
2152 | * Checks the codec for any new dapm widgets and creates them if found. | |
2153 | * | |
2154 | * Returns 0 for success. | |
2155 | */ | |
ce6120cc | 2156 | int snd_soc_dapm_new_widgets(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
2157 | { |
2158 | struct snd_soc_dapm_widget *w; | |
b66a70d5 | 2159 | unsigned int val; |
2b97eabc | 2160 | |
97c866de | 2161 | list_for_each_entry(w, &dapm->card->widgets, list) |
2b97eabc RP |
2162 | { |
2163 | if (w->new) | |
2164 | continue; | |
2165 | ||
fad59888 SW |
2166 | if (w->num_kcontrols) { |
2167 | w->kcontrols = kzalloc(w->num_kcontrols * | |
2168 | sizeof(struct snd_kcontrol *), | |
2169 | GFP_KERNEL); | |
2170 | if (!w->kcontrols) | |
2171 | return -ENOMEM; | |
2172 | } | |
2173 | ||
2b97eabc RP |
2174 | switch(w->id) { |
2175 | case snd_soc_dapm_switch: | |
2176 | case snd_soc_dapm_mixer: | |
ca9c1aae | 2177 | case snd_soc_dapm_mixer_named_ctl: |
4b80b8c2 | 2178 | dapm_new_mixer(w); |
2b97eabc RP |
2179 | break; |
2180 | case snd_soc_dapm_mux: | |
24ff33ac | 2181 | case snd_soc_dapm_virt_mux: |
2e72f8e3 | 2182 | case snd_soc_dapm_value_mux: |
4b80b8c2 | 2183 | dapm_new_mux(w); |
2b97eabc | 2184 | break; |
2b97eabc | 2185 | case snd_soc_dapm_pga: |
d88429a6 | 2186 | case snd_soc_dapm_out_drv: |
4b80b8c2 | 2187 | dapm_new_pga(w); |
2b97eabc | 2188 | break; |
7ca3a18b | 2189 | default: |
2b97eabc RP |
2190 | break; |
2191 | } | |
b66a70d5 MB |
2192 | |
2193 | /* Read the initial power state from the device */ | |
2194 | if (w->reg >= 0) { | |
0445bdf4 | 2195 | val = soc_widget_read(w, w->reg); |
b66a70d5 MB |
2196 | val &= 1 << w->shift; |
2197 | if (w->invert) | |
2198 | val = !val; | |
2199 | ||
2200 | if (val) | |
2201 | w->power = 1; | |
2202 | } | |
2203 | ||
2b97eabc | 2204 | w->new = 1; |
d5d1e0be | 2205 | |
7508b12a | 2206 | dapm_mark_dirty(w, "new widget"); |
d5d1e0be | 2207 | dapm_debugfs_add_widget(w); |
2b97eabc RP |
2208 | } |
2209 | ||
ce6120cc | 2210 | dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc RP |
2211 | return 0; |
2212 | } | |
2213 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets); | |
2214 | ||
2215 | /** | |
2216 | * snd_soc_dapm_get_volsw - dapm mixer get callback | |
2217 | * @kcontrol: mixer control | |
ac11a2b3 | 2218 | * @ucontrol: control element information |
2b97eabc RP |
2219 | * |
2220 | * Callback to get the value of a dapm mixer control. | |
2221 | * | |
2222 | * Returns 0 for success. | |
2223 | */ | |
2224 | int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol, | |
2225 | struct snd_ctl_elem_value *ucontrol) | |
2226 | { | |
fafd2176 SW |
2227 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2228 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
4eaa9819 JS |
2229 | struct soc_mixer_control *mc = |
2230 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
2231 | unsigned int reg = mc->reg; |
2232 | unsigned int shift = mc->shift; | |
2233 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 2234 | int max = mc->max; |
815ecf8d JS |
2235 | unsigned int invert = mc->invert; |
2236 | unsigned int mask = (1 << fls(max)) - 1; | |
2b97eabc | 2237 | |
2b97eabc RP |
2238 | ucontrol->value.integer.value[0] = |
2239 | (snd_soc_read(widget->codec, reg) >> shift) & mask; | |
2240 | if (shift != rshift) | |
2241 | ucontrol->value.integer.value[1] = | |
2242 | (snd_soc_read(widget->codec, reg) >> rshift) & mask; | |
2243 | if (invert) { | |
2244 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 2245 | max - ucontrol->value.integer.value[0]; |
2b97eabc RP |
2246 | if (shift != rshift) |
2247 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 2248 | max - ucontrol->value.integer.value[1]; |
2b97eabc RP |
2249 | } |
2250 | ||
2251 | return 0; | |
2252 | } | |
2253 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw); | |
2254 | ||
2255 | /** | |
2256 | * snd_soc_dapm_put_volsw - dapm mixer set callback | |
2257 | * @kcontrol: mixer control | |
ac11a2b3 | 2258 | * @ucontrol: control element information |
2b97eabc RP |
2259 | * |
2260 | * Callback to set the value of a dapm mixer control. | |
2261 | * | |
2262 | * Returns 0 for success. | |
2263 | */ | |
2264 | int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, | |
2265 | struct snd_ctl_elem_value *ucontrol) | |
2266 | { | |
fafd2176 SW |
2267 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2268 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2269 | struct snd_soc_codec *codec = widget->codec; | |
4eaa9819 JS |
2270 | struct soc_mixer_control *mc = |
2271 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
2272 | unsigned int reg = mc->reg; |
2273 | unsigned int shift = mc->shift; | |
4eaa9819 | 2274 | int max = mc->max; |
815ecf8d JS |
2275 | unsigned int mask = (1 << fls(max)) - 1; |
2276 | unsigned int invert = mc->invert; | |
e9cf7049 | 2277 | unsigned int val; |
97404f2e MB |
2278 | int connect, change; |
2279 | struct snd_soc_dapm_update update; | |
fafd2176 | 2280 | int wi; |
2b97eabc RP |
2281 | |
2282 | val = (ucontrol->value.integer.value[0] & mask); | |
2283 | ||
2284 | if (invert) | |
a7a4ac86 | 2285 | val = max - val; |
e9cf7049 | 2286 | mask = mask << shift; |
2b97eabc | 2287 | val = val << shift; |
2b97eabc | 2288 | |
fafd2176 SW |
2289 | if (val) |
2290 | /* new connection */ | |
2291 | connect = invert ? 0 : 1; | |
2292 | else | |
2293 | /* old connection must be powered down */ | |
2294 | connect = invert ? 1 : 0; | |
2295 | ||
2296 | mutex_lock(&codec->mutex); | |
2b97eabc | 2297 | |
e9cf7049 | 2298 | change = snd_soc_test_bits(widget->codec, reg, mask, val); |
97404f2e | 2299 | if (change) { |
fafd2176 SW |
2300 | for (wi = 0; wi < wlist->num_widgets; wi++) { |
2301 | widget = wlist->widgets[wi]; | |
283375ce | 2302 | |
fafd2176 | 2303 | widget->value = val; |
97404f2e | 2304 | |
fafd2176 SW |
2305 | update.kcontrol = kcontrol; |
2306 | update.widget = widget; | |
2307 | update.reg = reg; | |
2308 | update.mask = mask; | |
2309 | update.val = val; | |
2310 | widget->dapm->update = &update; | |
97404f2e | 2311 | |
fafd2176 SW |
2312 | dapm_mixer_update_power(widget, kcontrol, connect); |
2313 | ||
2314 | widget->dapm->update = NULL; | |
2315 | } | |
283375ce MB |
2316 | } |
2317 | ||
fafd2176 | 2318 | mutex_unlock(&codec->mutex); |
97404f2e | 2319 | return 0; |
2b97eabc RP |
2320 | } |
2321 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw); | |
2322 | ||
2323 | /** | |
2324 | * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback | |
2325 | * @kcontrol: mixer control | |
ac11a2b3 | 2326 | * @ucontrol: control element information |
2b97eabc RP |
2327 | * |
2328 | * Callback to get the value of a dapm enumerated double mixer control. | |
2329 | * | |
2330 | * Returns 0 for success. | |
2331 | */ | |
2332 | int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol, | |
2333 | struct snd_ctl_elem_value *ucontrol) | |
2334 | { | |
fafd2176 SW |
2335 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2336 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2b97eabc | 2337 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f | 2338 | unsigned int val, bitmask; |
2b97eabc | 2339 | |
f8ba0b7b | 2340 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
2341 | ; |
2342 | val = snd_soc_read(widget->codec, e->reg); | |
2343 | ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1); | |
2344 | if (e->shift_l != e->shift_r) | |
2345 | ucontrol->value.enumerated.item[1] = | |
2346 | (val >> e->shift_r) & (bitmask - 1); | |
2347 | ||
2348 | return 0; | |
2349 | } | |
2350 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double); | |
2351 | ||
2352 | /** | |
2353 | * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback | |
2354 | * @kcontrol: mixer control | |
ac11a2b3 | 2355 | * @ucontrol: control element information |
2b97eabc RP |
2356 | * |
2357 | * Callback to set the value of a dapm enumerated double mixer control. | |
2358 | * | |
2359 | * Returns 0 for success. | |
2360 | */ | |
2361 | int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, | |
2362 | struct snd_ctl_elem_value *ucontrol) | |
2363 | { | |
fafd2176 SW |
2364 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2365 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2366 | struct snd_soc_codec *codec = widget->codec; | |
2b97eabc | 2367 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
3a65577d | 2368 | unsigned int val, mux, change; |
46f5822f | 2369 | unsigned int mask, bitmask; |
97404f2e | 2370 | struct snd_soc_dapm_update update; |
fafd2176 | 2371 | int wi; |
2b97eabc | 2372 | |
f8ba0b7b | 2373 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc | 2374 | ; |
f8ba0b7b | 2375 | if (ucontrol->value.enumerated.item[0] > e->max - 1) |
2b97eabc RP |
2376 | return -EINVAL; |
2377 | mux = ucontrol->value.enumerated.item[0]; | |
2378 | val = mux << e->shift_l; | |
2379 | mask = (bitmask - 1) << e->shift_l; | |
2380 | if (e->shift_l != e->shift_r) { | |
f8ba0b7b | 2381 | if (ucontrol->value.enumerated.item[1] > e->max - 1) |
2b97eabc RP |
2382 | return -EINVAL; |
2383 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
2384 | mask |= (bitmask - 1) << e->shift_r; | |
2385 | } | |
2386 | ||
fafd2176 SW |
2387 | mutex_lock(&codec->mutex); |
2388 | ||
3a65577d | 2389 | change = snd_soc_test_bits(widget->codec, e->reg, mask, val); |
fafd2176 SW |
2390 | if (change) { |
2391 | for (wi = 0; wi < wlist->num_widgets; wi++) { | |
2392 | widget = wlist->widgets[wi]; | |
2393 | ||
2394 | widget->value = val; | |
1642e3d4 | 2395 | |
fafd2176 SW |
2396 | update.kcontrol = kcontrol; |
2397 | update.widget = widget; | |
2398 | update.reg = e->reg; | |
2399 | update.mask = mask; | |
2400 | update.val = val; | |
2401 | widget->dapm->update = &update; | |
1642e3d4 | 2402 | |
fafd2176 | 2403 | dapm_mux_update_power(widget, kcontrol, change, mux, e); |
1642e3d4 | 2404 | |
fafd2176 SW |
2405 | widget->dapm->update = NULL; |
2406 | } | |
2407 | } | |
2b97eabc | 2408 | |
fafd2176 | 2409 | mutex_unlock(&codec->mutex); |
97404f2e | 2410 | return change; |
2b97eabc RP |
2411 | } |
2412 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double); | |
2413 | ||
d2b247a8 MB |
2414 | /** |
2415 | * snd_soc_dapm_get_enum_virt - Get virtual DAPM mux | |
2416 | * @kcontrol: mixer control | |
2417 | * @ucontrol: control element information | |
2418 | * | |
2419 | * Returns 0 for success. | |
2420 | */ | |
2421 | int snd_soc_dapm_get_enum_virt(struct snd_kcontrol *kcontrol, | |
2422 | struct snd_ctl_elem_value *ucontrol) | |
2423 | { | |
fafd2176 SW |
2424 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2425 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
d2b247a8 MB |
2426 | |
2427 | ucontrol->value.enumerated.item[0] = widget->value; | |
2428 | ||
2429 | return 0; | |
2430 | } | |
2431 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_virt); | |
2432 | ||
2433 | /** | |
2434 | * snd_soc_dapm_put_enum_virt - Set virtual DAPM mux | |
2435 | * @kcontrol: mixer control | |
2436 | * @ucontrol: control element information | |
2437 | * | |
2438 | * Returns 0 for success. | |
2439 | */ | |
2440 | int snd_soc_dapm_put_enum_virt(struct snd_kcontrol *kcontrol, | |
2441 | struct snd_ctl_elem_value *ucontrol) | |
2442 | { | |
fafd2176 SW |
2443 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2444 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2445 | struct snd_soc_codec *codec = widget->codec; | |
d2b247a8 MB |
2446 | struct soc_enum *e = |
2447 | (struct soc_enum *)kcontrol->private_value; | |
2448 | int change; | |
2449 | int ret = 0; | |
fafd2176 | 2450 | int wi; |
d2b247a8 MB |
2451 | |
2452 | if (ucontrol->value.enumerated.item[0] >= e->max) | |
2453 | return -EINVAL; | |
2454 | ||
fafd2176 | 2455 | mutex_lock(&codec->mutex); |
d2b247a8 MB |
2456 | |
2457 | change = widget->value != ucontrol->value.enumerated.item[0]; | |
fafd2176 SW |
2458 | if (change) { |
2459 | for (wi = 0; wi < wlist->num_widgets; wi++) { | |
2460 | widget = wlist->widgets[wi]; | |
2461 | ||
2462 | widget->value = ucontrol->value.enumerated.item[0]; | |
2463 | ||
2464 | dapm_mux_update_power(widget, kcontrol, change, | |
2465 | widget->value, e); | |
2466 | } | |
2467 | } | |
d2b247a8 | 2468 | |
fafd2176 | 2469 | mutex_unlock(&codec->mutex); |
d2b247a8 MB |
2470 | return ret; |
2471 | } | |
2472 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt); | |
2473 | ||
2e72f8e3 PU |
2474 | /** |
2475 | * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get | |
2476 | * callback | |
2477 | * @kcontrol: mixer control | |
2478 | * @ucontrol: control element information | |
2479 | * | |
2480 | * Callback to get the value of a dapm semi enumerated double mixer control. | |
2481 | * | |
2482 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
2483 | * used for handling bitfield coded enumeration for example. | |
2484 | * | |
2485 | * Returns 0 for success. | |
2486 | */ | |
2487 | int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol *kcontrol, | |
2488 | struct snd_ctl_elem_value *ucontrol) | |
2489 | { | |
fafd2176 SW |
2490 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2491 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
74155556 | 2492 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f | 2493 | unsigned int reg_val, val, mux; |
2e72f8e3 PU |
2494 | |
2495 | reg_val = snd_soc_read(widget->codec, e->reg); | |
2496 | val = (reg_val >> e->shift_l) & e->mask; | |
2497 | for (mux = 0; mux < e->max; mux++) { | |
2498 | if (val == e->values[mux]) | |
2499 | break; | |
2500 | } | |
2501 | ucontrol->value.enumerated.item[0] = mux; | |
2502 | if (e->shift_l != e->shift_r) { | |
2503 | val = (reg_val >> e->shift_r) & e->mask; | |
2504 | for (mux = 0; mux < e->max; mux++) { | |
2505 | if (val == e->values[mux]) | |
2506 | break; | |
2507 | } | |
2508 | ucontrol->value.enumerated.item[1] = mux; | |
2509 | } | |
2510 | ||
2511 | return 0; | |
2512 | } | |
2513 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double); | |
2514 | ||
2515 | /** | |
2516 | * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set | |
2517 | * callback | |
2518 | * @kcontrol: mixer control | |
2519 | * @ucontrol: control element information | |
2520 | * | |
2521 | * Callback to set the value of a dapm semi enumerated double mixer control. | |
2522 | * | |
2523 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
2524 | * used for handling bitfield coded enumeration for example. | |
2525 | * | |
2526 | * Returns 0 for success. | |
2527 | */ | |
2528 | int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol, | |
2529 | struct snd_ctl_elem_value *ucontrol) | |
2530 | { | |
fafd2176 SW |
2531 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2532 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2533 | struct snd_soc_codec *codec = widget->codec; | |
74155556 | 2534 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
3a65577d | 2535 | unsigned int val, mux, change; |
46f5822f | 2536 | unsigned int mask; |
97404f2e | 2537 | struct snd_soc_dapm_update update; |
fafd2176 | 2538 | int wi; |
2e72f8e3 PU |
2539 | |
2540 | if (ucontrol->value.enumerated.item[0] > e->max - 1) | |
2541 | return -EINVAL; | |
2542 | mux = ucontrol->value.enumerated.item[0]; | |
2543 | val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l; | |
2544 | mask = e->mask << e->shift_l; | |
2545 | if (e->shift_l != e->shift_r) { | |
2546 | if (ucontrol->value.enumerated.item[1] > e->max - 1) | |
2547 | return -EINVAL; | |
2548 | val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r; | |
2549 | mask |= e->mask << e->shift_r; | |
2550 | } | |
2551 | ||
fafd2176 SW |
2552 | mutex_lock(&codec->mutex); |
2553 | ||
3a65577d | 2554 | change = snd_soc_test_bits(widget->codec, e->reg, mask, val); |
fafd2176 SW |
2555 | if (change) { |
2556 | for (wi = 0; wi < wlist->num_widgets; wi++) { | |
2557 | widget = wlist->widgets[wi]; | |
1642e3d4 | 2558 | |
fafd2176 | 2559 | widget->value = val; |
1642e3d4 | 2560 | |
fafd2176 SW |
2561 | update.kcontrol = kcontrol; |
2562 | update.widget = widget; | |
2563 | update.reg = e->reg; | |
2564 | update.mask = mask; | |
2565 | update.val = val; | |
2566 | widget->dapm->update = &update; | |
1642e3d4 | 2567 | |
fafd2176 SW |
2568 | dapm_mux_update_power(widget, kcontrol, change, mux, e); |
2569 | ||
2570 | widget->dapm->update = NULL; | |
2571 | } | |
2572 | } | |
2e72f8e3 | 2573 | |
fafd2176 | 2574 | mutex_unlock(&codec->mutex); |
97404f2e | 2575 | return change; |
2e72f8e3 PU |
2576 | } |
2577 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double); | |
2578 | ||
8b37dbd2 MB |
2579 | /** |
2580 | * snd_soc_dapm_info_pin_switch - Info for a pin switch | |
2581 | * | |
2582 | * @kcontrol: mixer control | |
2583 | * @uinfo: control element information | |
2584 | * | |
2585 | * Callback to provide information about a pin switch control. | |
2586 | */ | |
2587 | int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol, | |
2588 | struct snd_ctl_elem_info *uinfo) | |
2589 | { | |
2590 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
2591 | uinfo->count = 1; | |
2592 | uinfo->value.integer.min = 0; | |
2593 | uinfo->value.integer.max = 1; | |
2594 | ||
2595 | return 0; | |
2596 | } | |
2597 | EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch); | |
2598 | ||
2599 | /** | |
2600 | * snd_soc_dapm_get_pin_switch - Get information for a pin switch | |
2601 | * | |
2602 | * @kcontrol: mixer control | |
2603 | * @ucontrol: Value | |
2604 | */ | |
2605 | int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol, | |
2606 | struct snd_ctl_elem_value *ucontrol) | |
2607 | { | |
2608 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
2609 | const char *pin = (const char *)kcontrol->private_value; | |
2610 | ||
2611 | mutex_lock(&codec->mutex); | |
2612 | ||
2613 | ucontrol->value.integer.value[0] = | |
ce6120cc | 2614 | snd_soc_dapm_get_pin_status(&codec->dapm, pin); |
8b37dbd2 MB |
2615 | |
2616 | mutex_unlock(&codec->mutex); | |
2617 | ||
2618 | return 0; | |
2619 | } | |
2620 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch); | |
2621 | ||
2622 | /** | |
2623 | * snd_soc_dapm_put_pin_switch - Set information for a pin switch | |
2624 | * | |
2625 | * @kcontrol: mixer control | |
2626 | * @ucontrol: Value | |
2627 | */ | |
2628 | int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol, | |
2629 | struct snd_ctl_elem_value *ucontrol) | |
2630 | { | |
2631 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
2632 | const char *pin = (const char *)kcontrol->private_value; | |
2633 | ||
2634 | mutex_lock(&codec->mutex); | |
2635 | ||
2636 | if (ucontrol->value.integer.value[0]) | |
ce6120cc | 2637 | snd_soc_dapm_enable_pin(&codec->dapm, pin); |
8b37dbd2 | 2638 | else |
ce6120cc | 2639 | snd_soc_dapm_disable_pin(&codec->dapm, pin); |
8b37dbd2 | 2640 | |
ce6120cc | 2641 | snd_soc_dapm_sync(&codec->dapm); |
8b37dbd2 MB |
2642 | |
2643 | mutex_unlock(&codec->mutex); | |
2644 | ||
2645 | return 0; | |
2646 | } | |
2647 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch); | |
2648 | ||
2b97eabc RP |
2649 | /** |
2650 | * snd_soc_dapm_new_control - create new dapm control | |
ce6120cc | 2651 | * @dapm: DAPM context |
2b97eabc RP |
2652 | * @widget: widget template |
2653 | * | |
2654 | * Creates a new dapm control based upon the template. | |
2655 | * | |
2656 | * Returns 0 for success else error. | |
2657 | */ | |
ce6120cc | 2658 | int snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
2659 | const struct snd_soc_dapm_widget *widget) |
2660 | { | |
2661 | struct snd_soc_dapm_widget *w; | |
ead9b919 | 2662 | size_t name_len; |
2b97eabc RP |
2663 | |
2664 | if ((w = dapm_cnew_widget(widget)) == NULL) | |
2665 | return -ENOMEM; | |
2666 | ||
ead9b919 | 2667 | name_len = strlen(widget->name) + 1; |
88e8b9a8 | 2668 | if (dapm->codec && dapm->codec->name_prefix) |
ead9b919 JN |
2669 | name_len += 1 + strlen(dapm->codec->name_prefix); |
2670 | w->name = kmalloc(name_len, GFP_KERNEL); | |
2671 | if (w->name == NULL) { | |
2672 | kfree(w); | |
2673 | return -ENOMEM; | |
2674 | } | |
88e8b9a8 | 2675 | if (dapm->codec && dapm->codec->name_prefix) |
ead9b919 JN |
2676 | snprintf(w->name, name_len, "%s %s", |
2677 | dapm->codec->name_prefix, widget->name); | |
2678 | else | |
2679 | snprintf(w->name, name_len, "%s", widget->name); | |
2680 | ||
7ca3a18b MB |
2681 | switch (w->id) { |
2682 | case snd_soc_dapm_switch: | |
2683 | case snd_soc_dapm_mixer: | |
2684 | case snd_soc_dapm_mixer_named_ctl: | |
2685 | w->power_check = dapm_generic_check_power; | |
2686 | break; | |
2687 | case snd_soc_dapm_mux: | |
2688 | case snd_soc_dapm_virt_mux: | |
2689 | case snd_soc_dapm_value_mux: | |
2690 | w->power_check = dapm_generic_check_power; | |
2691 | break; | |
2692 | case snd_soc_dapm_adc: | |
2693 | case snd_soc_dapm_aif_out: | |
2694 | w->power_check = dapm_adc_check_power; | |
2695 | break; | |
2696 | case snd_soc_dapm_dac: | |
2697 | case snd_soc_dapm_aif_in: | |
2698 | w->power_check = dapm_dac_check_power; | |
2699 | break; | |
2700 | case snd_soc_dapm_pga: | |
2701 | case snd_soc_dapm_out_drv: | |
2702 | case snd_soc_dapm_input: | |
2703 | case snd_soc_dapm_output: | |
2704 | case snd_soc_dapm_micbias: | |
2705 | case snd_soc_dapm_spk: | |
2706 | case snd_soc_dapm_hp: | |
2707 | case snd_soc_dapm_mic: | |
2708 | case snd_soc_dapm_line: | |
2709 | w->power_check = dapm_generic_check_power; | |
2710 | break; | |
2711 | case snd_soc_dapm_supply: | |
2712 | w->power_check = dapm_supply_check_power; | |
2713 | break; | |
2714 | default: | |
2715 | w->power_check = dapm_always_on_check_power; | |
2716 | break; | |
2717 | } | |
2718 | ||
97c866de | 2719 | dapm->n_widgets++; |
ce6120cc LG |
2720 | w->dapm = dapm; |
2721 | w->codec = dapm->codec; | |
b7950641 | 2722 | w->platform = dapm->platform; |
2b97eabc RP |
2723 | INIT_LIST_HEAD(&w->sources); |
2724 | INIT_LIST_HEAD(&w->sinks); | |
2725 | INIT_LIST_HEAD(&w->list); | |
db432b41 | 2726 | INIT_LIST_HEAD(&w->dirty); |
97c866de | 2727 | list_add(&w->list, &dapm->card->widgets); |
2b97eabc RP |
2728 | |
2729 | /* machine layer set ups unconnected pins and insertions */ | |
2730 | w->connected = 1; | |
2731 | return 0; | |
2732 | } | |
2733 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control); | |
2734 | ||
4ba1327a MB |
2735 | /** |
2736 | * snd_soc_dapm_new_controls - create new dapm controls | |
ce6120cc | 2737 | * @dapm: DAPM context |
4ba1327a MB |
2738 | * @widget: widget array |
2739 | * @num: number of widgets | |
2740 | * | |
2741 | * Creates new DAPM controls based upon the templates. | |
2742 | * | |
2743 | * Returns 0 for success else error. | |
2744 | */ | |
ce6120cc | 2745 | int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm, |
4ba1327a MB |
2746 | const struct snd_soc_dapm_widget *widget, |
2747 | int num) | |
2748 | { | |
2749 | int i, ret; | |
2750 | ||
2751 | for (i = 0; i < num; i++) { | |
ce6120cc | 2752 | ret = snd_soc_dapm_new_control(dapm, widget); |
b8b33cb5 | 2753 | if (ret < 0) { |
f7d41ae8 JN |
2754 | dev_err(dapm->dev, |
2755 | "ASoC: Failed to create DAPM control %s: %d\n", | |
2756 | widget->name, ret); | |
4ba1327a | 2757 | return ret; |
b8b33cb5 | 2758 | } |
4ba1327a MB |
2759 | widget++; |
2760 | } | |
2761 | return 0; | |
2762 | } | |
2763 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls); | |
2764 | ||
ce6120cc | 2765 | static void soc_dapm_stream_event(struct snd_soc_dapm_context *dapm, |
f0fba2ad | 2766 | const char *stream, int event) |
2b97eabc RP |
2767 | { |
2768 | struct snd_soc_dapm_widget *w; | |
2769 | ||
97c866de | 2770 | list_for_each_entry(w, &dapm->card->widgets, list) |
2b97eabc | 2771 | { |
97c866de | 2772 | if (!w->sname || w->dapm != dapm) |
2b97eabc | 2773 | continue; |
ee47b364 | 2774 | dev_vdbg(w->dapm->dev, "widget %s\n %s stream %s event %d\n", |
f7d41ae8 | 2775 | w->name, w->sname, stream, event); |
2b97eabc | 2776 | if (strstr(w->sname, stream)) { |
75c1f891 | 2777 | dapm_mark_dirty(w, "stream event"); |
2b97eabc RP |
2778 | switch(event) { |
2779 | case SND_SOC_DAPM_STREAM_START: | |
2780 | w->active = 1; | |
2781 | break; | |
2782 | case SND_SOC_DAPM_STREAM_STOP: | |
2783 | w->active = 0; | |
2784 | break; | |
2785 | case SND_SOC_DAPM_STREAM_SUSPEND: | |
2b97eabc | 2786 | case SND_SOC_DAPM_STREAM_RESUME: |
2b97eabc | 2787 | case SND_SOC_DAPM_STREAM_PAUSE_PUSH: |
2b97eabc RP |
2788 | case SND_SOC_DAPM_STREAM_PAUSE_RELEASE: |
2789 | break; | |
2790 | } | |
2791 | } | |
2792 | } | |
2b97eabc | 2793 | |
ce6120cc | 2794 | dapm_power_widgets(dapm, event); |
64a648c2 LG |
2795 | |
2796 | /* do we need to notify any clients that DAPM stream is complete */ | |
2797 | if (dapm->stream_event) | |
2798 | dapm->stream_event(dapm, event); | |
ce6120cc LG |
2799 | } |
2800 | ||
2801 | /** | |
2802 | * snd_soc_dapm_stream_event - send a stream event to the dapm core | |
2803 | * @rtd: PCM runtime data | |
2804 | * @stream: stream name | |
2805 | * @event: stream event | |
2806 | * | |
2807 | * Sends a stream event to the dapm core. The core then makes any | |
2808 | * necessary widget power changes. | |
2809 | * | |
2810 | * Returns 0 for success else error. | |
2811 | */ | |
2812 | int snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, | |
2813 | const char *stream, int event) | |
2814 | { | |
2815 | struct snd_soc_codec *codec = rtd->codec; | |
2816 | ||
2817 | if (stream == NULL) | |
2818 | return 0; | |
2819 | ||
2820 | mutex_lock(&codec->mutex); | |
2821 | soc_dapm_stream_event(&codec->dapm, stream, event); | |
8e8b2d67 | 2822 | mutex_unlock(&codec->mutex); |
2b97eabc RP |
2823 | return 0; |
2824 | } | |
2b97eabc RP |
2825 | |
2826 | /** | |
a5302181 | 2827 | * snd_soc_dapm_enable_pin - enable pin. |
ce6120cc | 2828 | * @dapm: DAPM context |
a5302181 | 2829 | * @pin: pin name |
2b97eabc | 2830 | * |
74b8f955 | 2831 | * Enables input/output pin and its parents or children widgets iff there is |
a5302181 LG |
2832 | * a valid audio route and active audio stream. |
2833 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2834 | * do any widget power switching. | |
2b97eabc | 2835 | */ |
ce6120cc | 2836 | int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin) |
2b97eabc | 2837 | { |
ce6120cc | 2838 | return snd_soc_dapm_set_pin(dapm, pin, 1); |
a5302181 LG |
2839 | } |
2840 | EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin); | |
2b97eabc | 2841 | |
da34183e MB |
2842 | /** |
2843 | * snd_soc_dapm_force_enable_pin - force a pin to be enabled | |
ce6120cc | 2844 | * @dapm: DAPM context |
da34183e MB |
2845 | * @pin: pin name |
2846 | * | |
2847 | * Enables input/output pin regardless of any other state. This is | |
2848 | * intended for use with microphone bias supplies used in microphone | |
2849 | * jack detection. | |
2850 | * | |
2851 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2852 | * do any widget power switching. | |
2853 | */ | |
ce6120cc LG |
2854 | int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm, |
2855 | const char *pin) | |
da34183e | 2856 | { |
91a5fca4 | 2857 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); |
da34183e | 2858 | |
91a5fca4 LPC |
2859 | if (!w) { |
2860 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); | |
2861 | return -EINVAL; | |
0d86733c MB |
2862 | } |
2863 | ||
91a5fca4 LPC |
2864 | dev_dbg(w->dapm->dev, "dapm: force enable pin %s\n", pin); |
2865 | w->connected = 1; | |
2866 | w->force = 1; | |
75c1f891 | 2867 | dapm_mark_dirty(w, "force enable"); |
da34183e | 2868 | |
91a5fca4 | 2869 | return 0; |
da34183e MB |
2870 | } |
2871 | EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin); | |
2872 | ||
a5302181 LG |
2873 | /** |
2874 | * snd_soc_dapm_disable_pin - disable pin. | |
ce6120cc | 2875 | * @dapm: DAPM context |
a5302181 LG |
2876 | * @pin: pin name |
2877 | * | |
74b8f955 | 2878 | * Disables input/output pin and its parents or children widgets. |
a5302181 LG |
2879 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to |
2880 | * do any widget power switching. | |
2881 | */ | |
ce6120cc LG |
2882 | int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm, |
2883 | const char *pin) | |
a5302181 | 2884 | { |
ce6120cc | 2885 | return snd_soc_dapm_set_pin(dapm, pin, 0); |
2b97eabc | 2886 | } |
a5302181 | 2887 | EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin); |
2b97eabc | 2888 | |
5817b52a MB |
2889 | /** |
2890 | * snd_soc_dapm_nc_pin - permanently disable pin. | |
ce6120cc | 2891 | * @dapm: DAPM context |
5817b52a MB |
2892 | * @pin: pin name |
2893 | * | |
2894 | * Marks the specified pin as being not connected, disabling it along | |
2895 | * any parent or child widgets. At present this is identical to | |
2896 | * snd_soc_dapm_disable_pin() but in future it will be extended to do | |
2897 | * additional things such as disabling controls which only affect | |
2898 | * paths through the pin. | |
2899 | * | |
2900 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2901 | * do any widget power switching. | |
2902 | */ | |
ce6120cc | 2903 | int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin) |
5817b52a | 2904 | { |
ce6120cc | 2905 | return snd_soc_dapm_set_pin(dapm, pin, 0); |
5817b52a MB |
2906 | } |
2907 | EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin); | |
2908 | ||
eeec12bf | 2909 | /** |
a5302181 | 2910 | * snd_soc_dapm_get_pin_status - get audio pin status |
ce6120cc | 2911 | * @dapm: DAPM context |
a5302181 | 2912 | * @pin: audio signal pin endpoint (or start point) |
eeec12bf | 2913 | * |
a5302181 | 2914 | * Get audio pin status - connected or disconnected. |
eeec12bf | 2915 | * |
a5302181 | 2916 | * Returns 1 for connected otherwise 0. |
eeec12bf | 2917 | */ |
ce6120cc LG |
2918 | int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm, |
2919 | const char *pin) | |
eeec12bf | 2920 | { |
91a5fca4 | 2921 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); |
eeec12bf | 2922 | |
91a5fca4 LPC |
2923 | if (w) |
2924 | return w->connected; | |
a68b38ad | 2925 | |
eeec12bf GG |
2926 | return 0; |
2927 | } | |
a5302181 | 2928 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status); |
eeec12bf | 2929 | |
1547aba9 MB |
2930 | /** |
2931 | * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint | |
ce6120cc | 2932 | * @dapm: DAPM context |
1547aba9 MB |
2933 | * @pin: audio signal pin endpoint (or start point) |
2934 | * | |
2935 | * Mark the given endpoint or pin as ignoring suspend. When the | |
2936 | * system is disabled a path between two endpoints flagged as ignoring | |
2937 | * suspend will not be disabled. The path must already be enabled via | |
2938 | * normal means at suspend time, it will not be turned on if it was not | |
2939 | * already enabled. | |
2940 | */ | |
ce6120cc LG |
2941 | int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm, |
2942 | const char *pin) | |
1547aba9 | 2943 | { |
91a5fca4 | 2944 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, false); |
1547aba9 | 2945 | |
91a5fca4 LPC |
2946 | if (!w) { |
2947 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); | |
2948 | return -EINVAL; | |
1547aba9 MB |
2949 | } |
2950 | ||
91a5fca4 LPC |
2951 | w->ignore_suspend = 1; |
2952 | ||
2953 | return 0; | |
1547aba9 MB |
2954 | } |
2955 | EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend); | |
2956 | ||
1633281b SW |
2957 | static bool snd_soc_dapm_widget_in_card_paths(struct snd_soc_card *card, |
2958 | struct snd_soc_dapm_widget *w) | |
2959 | { | |
2960 | struct snd_soc_dapm_path *p; | |
2961 | ||
2962 | list_for_each_entry(p, &card->paths, list) { | |
2963 | if ((p->source == w) || (p->sink == w)) { | |
2964 | dev_dbg(card->dev, | |
2965 | "... Path %s(id:%d dapm:%p) - %s(id:%d dapm:%p)\n", | |
2966 | p->source->name, p->source->id, p->source->dapm, | |
2967 | p->sink->name, p->sink->id, p->sink->dapm); | |
2968 | ||
2969 | /* Connected to something other than the codec */ | |
2970 | if (p->source->dapm != p->sink->dapm) | |
2971 | return true; | |
2972 | /* | |
2973 | * Loopback connection from codec external pin to | |
2974 | * codec external pin | |
2975 | */ | |
2976 | if (p->sink->id == snd_soc_dapm_input) { | |
2977 | switch (p->source->id) { | |
2978 | case snd_soc_dapm_output: | |
2979 | case snd_soc_dapm_micbias: | |
2980 | return true; | |
2981 | default: | |
2982 | break; | |
2983 | } | |
2984 | } | |
2985 | } | |
2986 | } | |
2987 | ||
2988 | return false; | |
2989 | } | |
2990 | ||
2991 | /** | |
2992 | * snd_soc_dapm_auto_nc_codec_pins - call snd_soc_dapm_nc_pin for unused pins | |
2993 | * @codec: The codec whose pins should be processed | |
2994 | * | |
2995 | * Automatically call snd_soc_dapm_nc_pin() for any external pins in the codec | |
2996 | * which are unused. Pins are used if they are connected externally to the | |
2997 | * codec, whether that be to some other device, or a loop-back connection to | |
2998 | * the codec itself. | |
2999 | */ | |
3000 | void snd_soc_dapm_auto_nc_codec_pins(struct snd_soc_codec *codec) | |
3001 | { | |
3002 | struct snd_soc_card *card = codec->card; | |
3003 | struct snd_soc_dapm_context *dapm = &codec->dapm; | |
3004 | struct snd_soc_dapm_widget *w; | |
3005 | ||
a094b80b | 3006 | dev_dbg(codec->dev, "Auto NC: DAPMs: card:%p codec:%p\n", |
1633281b SW |
3007 | &card->dapm, &codec->dapm); |
3008 | ||
3009 | list_for_each_entry(w, &card->widgets, list) { | |
3010 | if (w->dapm != dapm) | |
3011 | continue; | |
3012 | switch (w->id) { | |
3013 | case snd_soc_dapm_input: | |
3014 | case snd_soc_dapm_output: | |
3015 | case snd_soc_dapm_micbias: | |
a094b80b | 3016 | dev_dbg(codec->dev, "Auto NC: Checking widget %s\n", |
1633281b SW |
3017 | w->name); |
3018 | if (!snd_soc_dapm_widget_in_card_paths(card, w)) { | |
a094b80b | 3019 | dev_dbg(codec->dev, |
1633281b SW |
3020 | "... Not in map; disabling\n"); |
3021 | snd_soc_dapm_nc_pin(dapm, w->name); | |
3022 | } | |
3023 | break; | |
3024 | default: | |
3025 | break; | |
3026 | } | |
3027 | } | |
3028 | } | |
3029 | ||
2b97eabc RP |
3030 | /** |
3031 | * snd_soc_dapm_free - free dapm resources | |
728a5222 | 3032 | * @dapm: DAPM context |
2b97eabc RP |
3033 | * |
3034 | * Free all dapm widgets and resources. | |
3035 | */ | |
ce6120cc | 3036 | void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm) |
2b97eabc | 3037 | { |
ce6120cc | 3038 | snd_soc_dapm_sys_remove(dapm->dev); |
6c45e126 | 3039 | dapm_debugfs_cleanup(dapm); |
ce6120cc | 3040 | dapm_free_widgets(dapm); |
7be31be8 | 3041 | list_del(&dapm->list); |
2b97eabc RP |
3042 | } |
3043 | EXPORT_SYMBOL_GPL(snd_soc_dapm_free); | |
3044 | ||
ce6120cc | 3045 | static void soc_dapm_shutdown_codec(struct snd_soc_dapm_context *dapm) |
51737470 | 3046 | { |
51737470 MB |
3047 | struct snd_soc_dapm_widget *w; |
3048 | LIST_HEAD(down_list); | |
3049 | int powerdown = 0; | |
3050 | ||
97c866de JN |
3051 | list_for_each_entry(w, &dapm->card->widgets, list) { |
3052 | if (w->dapm != dapm) | |
3053 | continue; | |
51737470 | 3054 | if (w->power) { |
828a842f | 3055 | dapm_seq_insert(w, &down_list, false); |
c2caa4da | 3056 | w->power = 0; |
51737470 MB |
3057 | powerdown = 1; |
3058 | } | |
3059 | } | |
3060 | ||
3061 | /* If there were no widgets to power down we're already in | |
3062 | * standby. | |
3063 | */ | |
3064 | if (powerdown) { | |
ed5a4c47 | 3065 | snd_soc_dapm_set_bias_level(dapm, SND_SOC_BIAS_PREPARE); |
828a842f | 3066 | dapm_seq_run(dapm, &down_list, 0, false); |
ed5a4c47 | 3067 | snd_soc_dapm_set_bias_level(dapm, SND_SOC_BIAS_STANDBY); |
51737470 | 3068 | } |
f0fba2ad LG |
3069 | } |
3070 | ||
3071 | /* | |
3072 | * snd_soc_dapm_shutdown - callback for system shutdown | |
3073 | */ | |
3074 | void snd_soc_dapm_shutdown(struct snd_soc_card *card) | |
3075 | { | |
3076 | struct snd_soc_codec *codec; | |
3077 | ||
ce6120cc LG |
3078 | list_for_each_entry(codec, &card->codec_dev_list, list) { |
3079 | soc_dapm_shutdown_codec(&codec->dapm); | |
ed5a4c47 | 3080 | snd_soc_dapm_set_bias_level(&codec->dapm, SND_SOC_BIAS_OFF); |
ce6120cc | 3081 | } |
51737470 MB |
3082 | } |
3083 | ||
2b97eabc | 3084 | /* Module information */ |
d331124d | 3085 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
2b97eabc RP |
3086 | MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC"); |
3087 | MODULE_LICENSE("GPL"); |