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2b97eabc RP |
1 | /* |
2 | * soc-dapm.c -- ALSA SoC Dynamic Audio Power Management | |
3 | * | |
4 | * Copyright 2005 Wolfson Microelectronics PLC. | |
d331124d | 5 | * Author: Liam Girdwood <lrg@slimlogic.co.uk> |
2b97eabc RP |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2 of the License, or (at your | |
10 | * option) any later version. | |
11 | * | |
2b97eabc RP |
12 | * Features: |
13 | * o Changes power status of internal codec blocks depending on the | |
14 | * dynamic configuration of codec internal audio paths and active | |
74b8f955 | 15 | * DACs/ADCs. |
2b97eabc RP |
16 | * o Platform power domain - can support external components i.e. amps and |
17 | * mic/meadphone insertion events. | |
18 | * o Automatic Mic Bias support | |
19 | * o Jack insertion power event initiation - e.g. hp insertion will enable | |
20 | * sinks, dacs, etc | |
3a4fa0a2 | 21 | * o Delayed powerdown of audio susbsystem to reduce pops between a quick |
2b97eabc RP |
22 | * device reopen. |
23 | * | |
24 | * Todo: | |
25 | * o DAPM power change sequencing - allow for configurable per | |
26 | * codec sequences. | |
27 | * o Support for analogue bias optimisation. | |
28 | * o Support for reduced codec oversampling rates. | |
29 | * o Support for reduced codec bias currents. | |
30 | */ | |
31 | ||
32 | #include <linux/module.h> | |
33 | #include <linux/moduleparam.h> | |
34 | #include <linux/init.h> | |
9d0624a7 | 35 | #include <linux/async.h> |
2b97eabc RP |
36 | #include <linux/delay.h> |
37 | #include <linux/pm.h> | |
38 | #include <linux/bitops.h> | |
39 | #include <linux/platform_device.h> | |
40 | #include <linux/jiffies.h> | |
20496ff3 | 41 | #include <linux/debugfs.h> |
5a0e3ad6 | 42 | #include <linux/slab.h> |
2b97eabc RP |
43 | #include <sound/core.h> |
44 | #include <sound/pcm.h> | |
45 | #include <sound/pcm_params.h> | |
ce6120cc | 46 | #include <sound/soc.h> |
2b97eabc RP |
47 | #include <sound/initval.h> |
48 | ||
84e90930 MB |
49 | #include <trace/events/asoc.h> |
50 | ||
2b97eabc RP |
51 | /* dapm power sequences - make this per codec in the future */ |
52 | static int dapm_up_seq[] = { | |
38357ab2 MB |
53 | [snd_soc_dapm_pre] = 0, |
54 | [snd_soc_dapm_supply] = 1, | |
55 | [snd_soc_dapm_micbias] = 2, | |
010ff262 MB |
56 | [snd_soc_dapm_aif_in] = 3, |
57 | [snd_soc_dapm_aif_out] = 3, | |
58 | [snd_soc_dapm_mic] = 4, | |
59 | [snd_soc_dapm_mux] = 5, | |
24ff33ac | 60 | [snd_soc_dapm_virt_mux] = 5, |
010ff262 MB |
61 | [snd_soc_dapm_value_mux] = 5, |
62 | [snd_soc_dapm_dac] = 6, | |
63 | [snd_soc_dapm_mixer] = 7, | |
64 | [snd_soc_dapm_mixer_named_ctl] = 7, | |
65 | [snd_soc_dapm_pga] = 8, | |
66 | [snd_soc_dapm_adc] = 9, | |
d88429a6 | 67 | [snd_soc_dapm_out_drv] = 10, |
010ff262 MB |
68 | [snd_soc_dapm_hp] = 10, |
69 | [snd_soc_dapm_spk] = 10, | |
70 | [snd_soc_dapm_post] = 11, | |
2b97eabc | 71 | }; |
ca9c1aae | 72 | |
2b97eabc | 73 | static int dapm_down_seq[] = { |
38357ab2 MB |
74 | [snd_soc_dapm_pre] = 0, |
75 | [snd_soc_dapm_adc] = 1, | |
76 | [snd_soc_dapm_hp] = 2, | |
1ca04065 | 77 | [snd_soc_dapm_spk] = 2, |
d88429a6 | 78 | [snd_soc_dapm_out_drv] = 2, |
38357ab2 MB |
79 | [snd_soc_dapm_pga] = 4, |
80 | [snd_soc_dapm_mixer_named_ctl] = 5, | |
e3d4dabd MB |
81 | [snd_soc_dapm_mixer] = 5, |
82 | [snd_soc_dapm_dac] = 6, | |
83 | [snd_soc_dapm_mic] = 7, | |
84 | [snd_soc_dapm_micbias] = 8, | |
85 | [snd_soc_dapm_mux] = 9, | |
24ff33ac | 86 | [snd_soc_dapm_virt_mux] = 9, |
e3d4dabd | 87 | [snd_soc_dapm_value_mux] = 9, |
010ff262 MB |
88 | [snd_soc_dapm_aif_in] = 10, |
89 | [snd_soc_dapm_aif_out] = 10, | |
90 | [snd_soc_dapm_supply] = 11, | |
91 | [snd_soc_dapm_post] = 12, | |
2b97eabc RP |
92 | }; |
93 | ||
12ef193d | 94 | static void pop_wait(u32 pop_time) |
15e4c72f MB |
95 | { |
96 | if (pop_time) | |
97 | schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time)); | |
98 | } | |
99 | ||
fd8d3bc0 | 100 | static void pop_dbg(struct device *dev, u32 pop_time, const char *fmt, ...) |
15e4c72f MB |
101 | { |
102 | va_list args; | |
fd8d3bc0 | 103 | char *buf; |
15e4c72f | 104 | |
fd8d3bc0 JN |
105 | if (!pop_time) |
106 | return; | |
15e4c72f | 107 | |
fd8d3bc0 JN |
108 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); |
109 | if (buf == NULL) | |
110 | return; | |
15e4c72f | 111 | |
fd8d3bc0 JN |
112 | va_start(args, fmt); |
113 | vsnprintf(buf, PAGE_SIZE, fmt, args); | |
9d01df06 | 114 | dev_info(dev, "%s", buf); |
15e4c72f | 115 | va_end(args); |
fd8d3bc0 JN |
116 | |
117 | kfree(buf); | |
15e4c72f MB |
118 | } |
119 | ||
2b97eabc | 120 | /* create a new dapm widget */ |
88cb4290 | 121 | static inline struct snd_soc_dapm_widget *dapm_cnew_widget( |
2b97eabc RP |
122 | const struct snd_soc_dapm_widget *_widget) |
123 | { | |
88cb4290 | 124 | return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL); |
2b97eabc RP |
125 | } |
126 | ||
452c5eaa MB |
127 | /** |
128 | * snd_soc_dapm_set_bias_level - set the bias level for the system | |
ed5a4c47 | 129 | * @dapm: DAPM context |
452c5eaa MB |
130 | * @level: level to configure |
131 | * | |
132 | * Configure the bias (power) levels for the SoC audio device. | |
133 | * | |
134 | * Returns 0 for success else error. | |
135 | */ | |
ed5a4c47 | 136 | static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm, |
ce6120cc | 137 | enum snd_soc_bias_level level) |
452c5eaa | 138 | { |
ed5a4c47 | 139 | struct snd_soc_card *card = dapm->card; |
452c5eaa MB |
140 | int ret = 0; |
141 | ||
84e90930 MB |
142 | trace_snd_soc_bias_level_start(card, level); |
143 | ||
f0fba2ad | 144 | if (card && card->set_bias_level) |
d4c6005f | 145 | ret = card->set_bias_level(card, dapm, level); |
171ec6b0 MB |
146 | if (ret != 0) |
147 | goto out; | |
148 | ||
149 | if (dapm->codec && dapm->codec->driver->set_bias_level) | |
150 | ret = dapm->codec->driver->set_bias_level(dapm->codec, level); | |
151 | else | |
152 | dapm->bias_level = level; | |
153 | if (ret != 0) | |
154 | goto out; | |
155 | ||
156 | if (card && card->set_bias_level_post) | |
d4c6005f | 157 | ret = card->set_bias_level_post(card, dapm, level); |
171ec6b0 | 158 | out: |
84e90930 MB |
159 | trace_snd_soc_bias_level_done(card, level); |
160 | ||
452c5eaa MB |
161 | return ret; |
162 | } | |
163 | ||
2b97eabc RP |
164 | /* set up initial codec paths */ |
165 | static void dapm_set_path_status(struct snd_soc_dapm_widget *w, | |
166 | struct snd_soc_dapm_path *p, int i) | |
167 | { | |
168 | switch (w->id) { | |
169 | case snd_soc_dapm_switch: | |
ca9c1aae IM |
170 | case snd_soc_dapm_mixer: |
171 | case snd_soc_dapm_mixer_named_ctl: { | |
2b97eabc | 172 | int val; |
4eaa9819 | 173 | struct soc_mixer_control *mc = (struct soc_mixer_control *) |
82cfecdc | 174 | w->kcontrol_news[i].private_value; |
815ecf8d JS |
175 | unsigned int reg = mc->reg; |
176 | unsigned int shift = mc->shift; | |
4eaa9819 | 177 | int max = mc->max; |
815ecf8d JS |
178 | unsigned int mask = (1 << fls(max)) - 1; |
179 | unsigned int invert = mc->invert; | |
2b97eabc RP |
180 | |
181 | val = snd_soc_read(w->codec, reg); | |
182 | val = (val >> shift) & mask; | |
183 | ||
184 | if ((invert && !val) || (!invert && val)) | |
185 | p->connect = 1; | |
186 | else | |
187 | p->connect = 0; | |
188 | } | |
189 | break; | |
190 | case snd_soc_dapm_mux: { | |
82cfecdc SW |
191 | struct soc_enum *e = (struct soc_enum *) |
192 | w->kcontrol_news[i].private_value; | |
2b97eabc RP |
193 | int val, item, bitmask; |
194 | ||
f8ba0b7b | 195 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
88d96086 | 196 | ; |
2b97eabc RP |
197 | val = snd_soc_read(w->codec, e->reg); |
198 | item = (val >> e->shift_l) & (bitmask - 1); | |
199 | ||
200 | p->connect = 0; | |
f8ba0b7b | 201 | for (i = 0; i < e->max; i++) { |
2b97eabc RP |
202 | if (!(strcmp(p->name, e->texts[i])) && item == i) |
203 | p->connect = 1; | |
204 | } | |
205 | } | |
206 | break; | |
24ff33ac | 207 | case snd_soc_dapm_virt_mux: { |
82cfecdc SW |
208 | struct soc_enum *e = (struct soc_enum *) |
209 | w->kcontrol_news[i].private_value; | |
24ff33ac DP |
210 | |
211 | p->connect = 0; | |
212 | /* since a virtual mux has no backing registers to | |
213 | * decide which path to connect, it will try to match | |
214 | * with the first enumeration. This is to ensure | |
215 | * that the default mux choice (the first) will be | |
216 | * correctly powered up during initialization. | |
217 | */ | |
218 | if (!strcmp(p->name, e->texts[0])) | |
219 | p->connect = 1; | |
220 | } | |
221 | break; | |
2e72f8e3 | 222 | case snd_soc_dapm_value_mux: { |
74155556 | 223 | struct soc_enum *e = (struct soc_enum *) |
82cfecdc | 224 | w->kcontrol_news[i].private_value; |
2e72f8e3 PU |
225 | int val, item; |
226 | ||
227 | val = snd_soc_read(w->codec, e->reg); | |
228 | val = (val >> e->shift_l) & e->mask; | |
229 | for (item = 0; item < e->max; item++) { | |
230 | if (val == e->values[item]) | |
231 | break; | |
232 | } | |
233 | ||
234 | p->connect = 0; | |
235 | for (i = 0; i < e->max; i++) { | |
236 | if (!(strcmp(p->name, e->texts[i])) && item == i) | |
237 | p->connect = 1; | |
238 | } | |
239 | } | |
240 | break; | |
2b97eabc RP |
241 | /* does not effect routing - always connected */ |
242 | case snd_soc_dapm_pga: | |
d88429a6 | 243 | case snd_soc_dapm_out_drv: |
2b97eabc RP |
244 | case snd_soc_dapm_output: |
245 | case snd_soc_dapm_adc: | |
246 | case snd_soc_dapm_input: | |
247 | case snd_soc_dapm_dac: | |
248 | case snd_soc_dapm_micbias: | |
249 | case snd_soc_dapm_vmid: | |
246d0a17 | 250 | case snd_soc_dapm_supply: |
010ff262 MB |
251 | case snd_soc_dapm_aif_in: |
252 | case snd_soc_dapm_aif_out: | |
2b97eabc RP |
253 | p->connect = 1; |
254 | break; | |
255 | /* does effect routing - dynamically connected */ | |
256 | case snd_soc_dapm_hp: | |
257 | case snd_soc_dapm_mic: | |
258 | case snd_soc_dapm_spk: | |
259 | case snd_soc_dapm_line: | |
260 | case snd_soc_dapm_pre: | |
261 | case snd_soc_dapm_post: | |
262 | p->connect = 0; | |
263 | break; | |
264 | } | |
265 | } | |
266 | ||
74b8f955 | 267 | /* connect mux widget to its interconnecting audio paths */ |
ce6120cc | 268 | static int dapm_connect_mux(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
269 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, |
270 | struct snd_soc_dapm_path *path, const char *control_name, | |
271 | const struct snd_kcontrol_new *kcontrol) | |
272 | { | |
273 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
274 | int i; | |
275 | ||
f8ba0b7b | 276 | for (i = 0; i < e->max; i++) { |
2b97eabc | 277 | if (!(strcmp(control_name, e->texts[i]))) { |
8ddab3f5 | 278 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
279 | list_add(&path->list_sink, &dest->sources); |
280 | list_add(&path->list_source, &src->sinks); | |
281 | path->name = (char*)e->texts[i]; | |
282 | dapm_set_path_status(dest, path, 0); | |
283 | return 0; | |
284 | } | |
285 | } | |
286 | ||
287 | return -ENODEV; | |
288 | } | |
289 | ||
74b8f955 | 290 | /* connect mixer widget to its interconnecting audio paths */ |
ce6120cc | 291 | static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
292 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, |
293 | struct snd_soc_dapm_path *path, const char *control_name) | |
294 | { | |
295 | int i; | |
296 | ||
297 | /* search for mixer kcontrol */ | |
298 | for (i = 0; i < dest->num_kcontrols; i++) { | |
82cfecdc | 299 | if (!strcmp(control_name, dest->kcontrol_news[i].name)) { |
8ddab3f5 | 300 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
301 | list_add(&path->list_sink, &dest->sources); |
302 | list_add(&path->list_source, &src->sinks); | |
82cfecdc | 303 | path->name = dest->kcontrol_news[i].name; |
2b97eabc RP |
304 | dapm_set_path_status(dest, path, i); |
305 | return 0; | |
306 | } | |
307 | } | |
308 | return -ENODEV; | |
309 | } | |
310 | ||
af46800b | 311 | static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context *dapm, |
1007da06 | 312 | struct snd_soc_dapm_widget *kcontrolw, |
af46800b SW |
313 | const struct snd_kcontrol_new *kcontrol_new, |
314 | struct snd_kcontrol **kcontrol) | |
315 | { | |
316 | struct snd_soc_dapm_widget *w; | |
317 | int i; | |
318 | ||
319 | *kcontrol = NULL; | |
320 | ||
321 | list_for_each_entry(w, &dapm->card->widgets, list) { | |
1007da06 SW |
322 | if (w == kcontrolw || w->dapm != kcontrolw->dapm) |
323 | continue; | |
af46800b SW |
324 | for (i = 0; i < w->num_kcontrols; i++) { |
325 | if (&w->kcontrol_news[i] == kcontrol_new) { | |
326 | if (w->kcontrols) | |
327 | *kcontrol = w->kcontrols[i]; | |
328 | return 1; | |
329 | } | |
330 | } | |
331 | } | |
332 | ||
333 | return 0; | |
334 | } | |
335 | ||
2b97eabc | 336 | /* create new dapm mixer control */ |
ce6120cc | 337 | static int dapm_new_mixer(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
338 | struct snd_soc_dapm_widget *w) |
339 | { | |
340 | int i, ret = 0; | |
3e5ff4df | 341 | size_t name_len, prefix_len; |
2b97eabc | 342 | struct snd_soc_dapm_path *path; |
12ea2c78 | 343 | struct snd_card *card = dapm->card->snd_card; |
efb7ac3f | 344 | const char *prefix; |
fafd2176 SW |
345 | struct snd_soc_dapm_widget_list *wlist; |
346 | size_t wlistsize; | |
efb7ac3f MB |
347 | |
348 | if (dapm->codec) | |
349 | prefix = dapm->codec->name_prefix; | |
350 | else | |
351 | prefix = NULL; | |
2b97eabc | 352 | |
3e5ff4df MB |
353 | if (prefix) |
354 | prefix_len = strlen(prefix) + 1; | |
355 | else | |
356 | prefix_len = 0; | |
357 | ||
2b97eabc RP |
358 | /* add kcontrol */ |
359 | for (i = 0; i < w->num_kcontrols; i++) { | |
360 | ||
361 | /* match name */ | |
362 | list_for_each_entry(path, &w->sources, list_sink) { | |
363 | ||
364 | /* mixer/mux paths name must match control name */ | |
82cfecdc | 365 | if (path->name != (char *)w->kcontrol_news[i].name) |
2b97eabc RP |
366 | continue; |
367 | ||
fafd2176 SW |
368 | wlistsize = sizeof(struct snd_soc_dapm_widget_list) + |
369 | sizeof(struct snd_soc_dapm_widget *), | |
370 | wlist = kzalloc(wlistsize, GFP_KERNEL); | |
371 | if (wlist == NULL) { | |
372 | dev_err(dapm->dev, | |
373 | "asoc: can't allocate widget list for %s\n", | |
374 | w->name); | |
375 | return -ENOMEM; | |
376 | } | |
377 | wlist->num_widgets = 1; | |
378 | wlist->widgets[0] = w; | |
379 | ||
ca9c1aae IM |
380 | /* add dapm control with long name. |
381 | * for dapm_mixer this is the concatenation of the | |
382 | * mixer and kcontrol name. | |
383 | * for dapm_mixer_named_ctl this is simply the | |
384 | * kcontrol name. | |
385 | */ | |
82cfecdc | 386 | name_len = strlen(w->kcontrol_news[i].name) + 1; |
07495f3e | 387 | if (w->id != snd_soc_dapm_mixer_named_ctl) |
ca9c1aae IM |
388 | name_len += 1 + strlen(w->name); |
389 | ||
219b93f5 | 390 | path->long_name = kmalloc(name_len, GFP_KERNEL); |
ca9c1aae | 391 | |
fafd2176 SW |
392 | if (path->long_name == NULL) { |
393 | kfree(wlist); | |
2b97eabc | 394 | return -ENOMEM; |
fafd2176 | 395 | } |
2b97eabc | 396 | |
ca9c1aae | 397 | switch (w->id) { |
ca9c1aae | 398 | default: |
3e5ff4df MB |
399 | /* The control will get a prefix from |
400 | * the control creation process but | |
401 | * we're also using the same prefix | |
402 | * for widgets so cut the prefix off | |
403 | * the front of the widget name. | |
404 | */ | |
ca9c1aae | 405 | snprintf(path->long_name, name_len, "%s %s", |
3e5ff4df | 406 | w->name + prefix_len, |
82cfecdc | 407 | w->kcontrol_news[i].name); |
07495f3e | 408 | break; |
ca9c1aae IM |
409 | case snd_soc_dapm_mixer_named_ctl: |
410 | snprintf(path->long_name, name_len, "%s", | |
82cfecdc | 411 | w->kcontrol_news[i].name); |
07495f3e | 412 | break; |
ca9c1aae IM |
413 | } |
414 | ||
219b93f5 MB |
415 | path->long_name[name_len - 1] = '\0'; |
416 | ||
fafd2176 SW |
417 | path->kcontrol = snd_soc_cnew(&w->kcontrol_news[i], |
418 | wlist, path->long_name, | |
419 | prefix); | |
ce6120cc | 420 | ret = snd_ctl_add(card, path->kcontrol); |
2b97eabc | 421 | if (ret < 0) { |
f7d41ae8 JN |
422 | dev_err(dapm->dev, |
423 | "asoc: failed to add dapm kcontrol %s: %d\n", | |
424 | path->long_name, ret); | |
fafd2176 | 425 | kfree(wlist); |
2b97eabc RP |
426 | kfree(path->long_name); |
427 | path->long_name = NULL; | |
428 | return ret; | |
429 | } | |
fad59888 | 430 | w->kcontrols[i] = path->kcontrol; |
2b97eabc RP |
431 | } |
432 | } | |
433 | return ret; | |
434 | } | |
435 | ||
436 | /* create new dapm mux control */ | |
ce6120cc | 437 | static int dapm_new_mux(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
438 | struct snd_soc_dapm_widget *w) |
439 | { | |
440 | struct snd_soc_dapm_path *path = NULL; | |
441 | struct snd_kcontrol *kcontrol; | |
12ea2c78 | 442 | struct snd_card *card = dapm->card->snd_card; |
efb7ac3f | 443 | const char *prefix; |
3e5ff4df | 444 | size_t prefix_len; |
af46800b | 445 | int ret; |
fafd2176 | 446 | struct snd_soc_dapm_widget_list *wlist; |
af46800b | 447 | int shared, wlistentries; |
fafd2176 | 448 | size_t wlistsize; |
af46800b | 449 | char *name; |
2b97eabc | 450 | |
af46800b SW |
451 | if (w->num_kcontrols != 1) { |
452 | dev_err(dapm->dev, | |
453 | "asoc: mux %s has incorrect number of controls\n", | |
454 | w->name); | |
2b97eabc RP |
455 | return -EINVAL; |
456 | } | |
457 | ||
1007da06 | 458 | shared = dapm_is_shared_kcontrol(dapm, w, &w->kcontrol_news[0], |
af46800b SW |
459 | &kcontrol); |
460 | if (kcontrol) { | |
461 | wlist = kcontrol->private_data; | |
462 | wlistentries = wlist->num_widgets + 1; | |
463 | } else { | |
464 | wlist = NULL; | |
465 | wlistentries = 1; | |
466 | } | |
fafd2176 | 467 | wlistsize = sizeof(struct snd_soc_dapm_widget_list) + |
af46800b SW |
468 | wlistentries * sizeof(struct snd_soc_dapm_widget *), |
469 | wlist = krealloc(wlist, wlistsize, GFP_KERNEL); | |
fafd2176 SW |
470 | if (wlist == NULL) { |
471 | dev_err(dapm->dev, | |
472 | "asoc: can't allocate widget list for %s\n", w->name); | |
473 | return -ENOMEM; | |
474 | } | |
af46800b SW |
475 | wlist->num_widgets = wlistentries; |
476 | wlist->widgets[wlistentries - 1] = w; | |
efb7ac3f | 477 | |
af46800b SW |
478 | if (!kcontrol) { |
479 | if (dapm->codec) | |
480 | prefix = dapm->codec->name_prefix; | |
481 | else | |
482 | prefix = NULL; | |
483 | ||
484 | if (shared) { | |
485 | name = w->kcontrol_news[0].name; | |
486 | prefix_len = 0; | |
487 | } else { | |
488 | name = w->name; | |
489 | if (prefix) | |
490 | prefix_len = strlen(prefix) + 1; | |
491 | else | |
492 | prefix_len = 0; | |
493 | } | |
3e5ff4df | 494 | |
af46800b SW |
495 | /* |
496 | * The control will get a prefix from the control creation | |
497 | * process but we're also using the same prefix for widgets so | |
498 | * cut the prefix off the front of the widget name. | |
499 | */ | |
500 | kcontrol = snd_soc_cnew(&w->kcontrol_news[0], wlist, | |
501 | name + prefix_len, prefix); | |
502 | ret = snd_ctl_add(card, kcontrol); | |
503 | if (ret < 0) { | |
504 | dev_err(dapm->dev, | |
505 | "asoc: failed to add kcontrol %s\n", w->name); | |
506 | kfree(wlist); | |
507 | return ret; | |
508 | } | |
509 | } | |
ce6120cc | 510 | |
af46800b | 511 | kcontrol->private_data = wlist; |
2b97eabc | 512 | |
fad59888 SW |
513 | w->kcontrols[0] = kcontrol; |
514 | ||
2b97eabc RP |
515 | list_for_each_entry(path, &w->sources, list_sink) |
516 | path->kcontrol = kcontrol; | |
517 | ||
af46800b | 518 | return 0; |
2b97eabc RP |
519 | } |
520 | ||
521 | /* create new dapm volume control */ | |
ce6120cc | 522 | static int dapm_new_pga(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
523 | struct snd_soc_dapm_widget *w) |
524 | { | |
a6c65736 | 525 | if (w->num_kcontrols) |
f7d41ae8 JN |
526 | dev_err(w->dapm->dev, |
527 | "asoc: PGA controls not supported: '%s'\n", w->name); | |
2b97eabc | 528 | |
a6c65736 | 529 | return 0; |
2b97eabc RP |
530 | } |
531 | ||
532 | /* reset 'walked' bit for each dapm path */ | |
ce6120cc | 533 | static inline void dapm_clear_walk(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
534 | { |
535 | struct snd_soc_dapm_path *p; | |
536 | ||
8ddab3f5 | 537 | list_for_each_entry(p, &dapm->card->paths, list) |
2b97eabc RP |
538 | p->walked = 0; |
539 | } | |
540 | ||
9949788b MB |
541 | /* We implement power down on suspend by checking the power state of |
542 | * the ALSA card - when we are suspending the ALSA state for the card | |
543 | * is set to D3. | |
544 | */ | |
545 | static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget) | |
546 | { | |
12ea2c78 | 547 | int level = snd_power_get_state(widget->dapm->card->snd_card); |
9949788b | 548 | |
f0fba2ad | 549 | switch (level) { |
9949788b MB |
550 | case SNDRV_CTL_POWER_D3hot: |
551 | case SNDRV_CTL_POWER_D3cold: | |
1547aba9 | 552 | if (widget->ignore_suspend) |
f7d41ae8 JN |
553 | dev_dbg(widget->dapm->dev, "%s ignoring suspend\n", |
554 | widget->name); | |
1547aba9 | 555 | return widget->ignore_suspend; |
9949788b MB |
556 | default: |
557 | return 1; | |
558 | } | |
559 | } | |
560 | ||
2b97eabc RP |
561 | /* |
562 | * Recursively check for a completed path to an active or physically connected | |
563 | * output widget. Returns number of complete paths. | |
564 | */ | |
565 | static int is_connected_output_ep(struct snd_soc_dapm_widget *widget) | |
566 | { | |
567 | struct snd_soc_dapm_path *path; | |
568 | int con = 0; | |
569 | ||
246d0a17 MB |
570 | if (widget->id == snd_soc_dapm_supply) |
571 | return 0; | |
572 | ||
010ff262 MB |
573 | switch (widget->id) { |
574 | case snd_soc_dapm_adc: | |
575 | case snd_soc_dapm_aif_out: | |
576 | if (widget->active) | |
9949788b | 577 | return snd_soc_dapm_suspend_check(widget); |
010ff262 MB |
578 | default: |
579 | break; | |
580 | } | |
2b97eabc RP |
581 | |
582 | if (widget->connected) { | |
583 | /* connected pin ? */ | |
584 | if (widget->id == snd_soc_dapm_output && !widget->ext) | |
9949788b | 585 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
586 | |
587 | /* connected jack or spk ? */ | |
588 | if (widget->id == snd_soc_dapm_hp || widget->id == snd_soc_dapm_spk || | |
eaeae5d9 | 589 | (widget->id == snd_soc_dapm_line && !list_empty(&widget->sources))) |
9949788b | 590 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
591 | } |
592 | ||
593 | list_for_each_entry(path, &widget->sinks, list_source) { | |
594 | if (path->walked) | |
595 | continue; | |
596 | ||
597 | if (path->sink && path->connect) { | |
598 | path->walked = 1; | |
599 | con += is_connected_output_ep(path->sink); | |
600 | } | |
601 | } | |
602 | ||
603 | return con; | |
604 | } | |
605 | ||
606 | /* | |
607 | * Recursively check for a completed path to an active or physically connected | |
608 | * input widget. Returns number of complete paths. | |
609 | */ | |
610 | static int is_connected_input_ep(struct snd_soc_dapm_widget *widget) | |
611 | { | |
612 | struct snd_soc_dapm_path *path; | |
613 | int con = 0; | |
614 | ||
246d0a17 MB |
615 | if (widget->id == snd_soc_dapm_supply) |
616 | return 0; | |
617 | ||
2b97eabc | 618 | /* active stream ? */ |
010ff262 MB |
619 | switch (widget->id) { |
620 | case snd_soc_dapm_dac: | |
621 | case snd_soc_dapm_aif_in: | |
622 | if (widget->active) | |
9949788b | 623 | return snd_soc_dapm_suspend_check(widget); |
010ff262 MB |
624 | default: |
625 | break; | |
626 | } | |
2b97eabc RP |
627 | |
628 | if (widget->connected) { | |
629 | /* connected pin ? */ | |
630 | if (widget->id == snd_soc_dapm_input && !widget->ext) | |
9949788b | 631 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
632 | |
633 | /* connected VMID/Bias for lower pops */ | |
634 | if (widget->id == snd_soc_dapm_vmid) | |
9949788b | 635 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
636 | |
637 | /* connected jack ? */ | |
eaeae5d9 PU |
638 | if (widget->id == snd_soc_dapm_mic || |
639 | (widget->id == snd_soc_dapm_line && !list_empty(&widget->sinks))) | |
9949788b | 640 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
641 | } |
642 | ||
643 | list_for_each_entry(path, &widget->sources, list_sink) { | |
644 | if (path->walked) | |
645 | continue; | |
646 | ||
647 | if (path->source && path->connect) { | |
648 | path->walked = 1; | |
649 | con += is_connected_input_ep(path->source); | |
650 | } | |
651 | } | |
652 | ||
653 | return con; | |
654 | } | |
655 | ||
e2be2ccf JN |
656 | /* |
657 | * Handler for generic register modifier widget. | |
658 | */ | |
659 | int dapm_reg_event(struct snd_soc_dapm_widget *w, | |
660 | struct snd_kcontrol *kcontrol, int event) | |
661 | { | |
662 | unsigned int val; | |
663 | ||
664 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
665 | val = w->on_val; | |
666 | else | |
667 | val = w->off_val; | |
668 | ||
669 | snd_soc_update_bits(w->codec, -(w->reg + 1), | |
670 | w->mask << w->shift, val << w->shift); | |
671 | ||
672 | return 0; | |
673 | } | |
11589418 | 674 | EXPORT_SYMBOL_GPL(dapm_reg_event); |
e2be2ccf | 675 | |
cd0f2d47 MB |
676 | /* Generic check to see if a widget should be powered. |
677 | */ | |
678 | static int dapm_generic_check_power(struct snd_soc_dapm_widget *w) | |
679 | { | |
680 | int in, out; | |
681 | ||
682 | in = is_connected_input_ep(w); | |
ce6120cc | 683 | dapm_clear_walk(w->dapm); |
cd0f2d47 | 684 | out = is_connected_output_ep(w); |
ce6120cc | 685 | dapm_clear_walk(w->dapm); |
cd0f2d47 MB |
686 | return out != 0 && in != 0; |
687 | } | |
688 | ||
6ea31b9f MB |
689 | /* Check to see if an ADC has power */ |
690 | static int dapm_adc_check_power(struct snd_soc_dapm_widget *w) | |
691 | { | |
692 | int in; | |
693 | ||
694 | if (w->active) { | |
695 | in = is_connected_input_ep(w); | |
ce6120cc | 696 | dapm_clear_walk(w->dapm); |
6ea31b9f MB |
697 | return in != 0; |
698 | } else { | |
699 | return dapm_generic_check_power(w); | |
700 | } | |
701 | } | |
702 | ||
703 | /* Check to see if a DAC has power */ | |
704 | static int dapm_dac_check_power(struct snd_soc_dapm_widget *w) | |
705 | { | |
706 | int out; | |
707 | ||
708 | if (w->active) { | |
709 | out = is_connected_output_ep(w); | |
ce6120cc | 710 | dapm_clear_walk(w->dapm); |
6ea31b9f MB |
711 | return out != 0; |
712 | } else { | |
713 | return dapm_generic_check_power(w); | |
714 | } | |
715 | } | |
716 | ||
246d0a17 MB |
717 | /* Check to see if a power supply is needed */ |
718 | static int dapm_supply_check_power(struct snd_soc_dapm_widget *w) | |
719 | { | |
720 | struct snd_soc_dapm_path *path; | |
721 | int power = 0; | |
722 | ||
723 | /* Check if one of our outputs is connected */ | |
724 | list_for_each_entry(path, &w->sinks, list_source) { | |
215edda3 MB |
725 | if (path->connected && |
726 | !path->connected(path->source, path->sink)) | |
727 | continue; | |
728 | ||
3017358a MB |
729 | if (!path->sink) |
730 | continue; | |
731 | ||
732 | if (path->sink->force) { | |
733 | power = 1; | |
734 | break; | |
735 | } | |
736 | ||
737 | if (path->sink->power_check && | |
246d0a17 MB |
738 | path->sink->power_check(path->sink)) { |
739 | power = 1; | |
740 | break; | |
741 | } | |
742 | } | |
743 | ||
ce6120cc | 744 | dapm_clear_walk(w->dapm); |
246d0a17 MB |
745 | |
746 | return power; | |
747 | } | |
748 | ||
38357ab2 MB |
749 | static int dapm_seq_compare(struct snd_soc_dapm_widget *a, |
750 | struct snd_soc_dapm_widget *b, | |
828a842f | 751 | bool power_up) |
42aa3418 | 752 | { |
828a842f MB |
753 | int *sort; |
754 | ||
755 | if (power_up) | |
756 | sort = dapm_up_seq; | |
757 | else | |
758 | sort = dapm_down_seq; | |
759 | ||
38357ab2 MB |
760 | if (sort[a->id] != sort[b->id]) |
761 | return sort[a->id] - sort[b->id]; | |
20e4859d MB |
762 | if (a->subseq != b->subseq) { |
763 | if (power_up) | |
764 | return a->subseq - b->subseq; | |
765 | else | |
766 | return b->subseq - a->subseq; | |
767 | } | |
b22ead2a MB |
768 | if (a->reg != b->reg) |
769 | return a->reg - b->reg; | |
84dab567 MB |
770 | if (a->dapm != b->dapm) |
771 | return (unsigned long)a->dapm - (unsigned long)b->dapm; | |
42aa3418 | 772 | |
38357ab2 MB |
773 | return 0; |
774 | } | |
42aa3418 | 775 | |
38357ab2 MB |
776 | /* Insert a widget in order into a DAPM power sequence. */ |
777 | static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget, | |
778 | struct list_head *list, | |
828a842f | 779 | bool power_up) |
38357ab2 MB |
780 | { |
781 | struct snd_soc_dapm_widget *w; | |
782 | ||
783 | list_for_each_entry(w, list, power_list) | |
828a842f | 784 | if (dapm_seq_compare(new_widget, w, power_up) < 0) { |
38357ab2 MB |
785 | list_add_tail(&new_widget->power_list, &w->power_list); |
786 | return; | |
787 | } | |
788 | ||
789 | list_add_tail(&new_widget->power_list, list); | |
790 | } | |
791 | ||
68f89ad8 MB |
792 | static void dapm_seq_check_event(struct snd_soc_dapm_context *dapm, |
793 | struct snd_soc_dapm_widget *w, int event) | |
794 | { | |
795 | struct snd_soc_card *card = dapm->card; | |
796 | const char *ev_name; | |
797 | int power, ret; | |
798 | ||
799 | switch (event) { | |
800 | case SND_SOC_DAPM_PRE_PMU: | |
801 | ev_name = "PRE_PMU"; | |
802 | power = 1; | |
803 | break; | |
804 | case SND_SOC_DAPM_POST_PMU: | |
805 | ev_name = "POST_PMU"; | |
806 | power = 1; | |
807 | break; | |
808 | case SND_SOC_DAPM_PRE_PMD: | |
809 | ev_name = "PRE_PMD"; | |
810 | power = 0; | |
811 | break; | |
812 | case SND_SOC_DAPM_POST_PMD: | |
813 | ev_name = "POST_PMD"; | |
814 | power = 0; | |
815 | break; | |
816 | default: | |
817 | BUG(); | |
818 | return; | |
819 | } | |
820 | ||
821 | if (w->power != power) | |
822 | return; | |
823 | ||
824 | if (w->event && (w->event_flags & event)) { | |
825 | pop_dbg(dapm->dev, card->pop_time, "pop test : %s %s\n", | |
826 | w->name, ev_name); | |
84e90930 | 827 | trace_snd_soc_dapm_widget_event_start(w, event); |
68f89ad8 | 828 | ret = w->event(w, NULL, event); |
84e90930 | 829 | trace_snd_soc_dapm_widget_event_done(w, event); |
68f89ad8 MB |
830 | if (ret < 0) |
831 | pr_err("%s: %s event failed: %d\n", | |
832 | ev_name, w->name, ret); | |
833 | } | |
834 | } | |
835 | ||
b22ead2a | 836 | /* Apply the coalesced changes from a DAPM sequence */ |
ce6120cc | 837 | static void dapm_seq_run_coalesced(struct snd_soc_dapm_context *dapm, |
b22ead2a | 838 | struct list_head *pending) |
163cac06 | 839 | { |
3a45b867 | 840 | struct snd_soc_card *card = dapm->card; |
68f89ad8 MB |
841 | struct snd_soc_dapm_widget *w; |
842 | int reg, power; | |
b22ead2a MB |
843 | unsigned int value = 0; |
844 | unsigned int mask = 0; | |
845 | unsigned int cur_mask; | |
846 | ||
847 | reg = list_first_entry(pending, struct snd_soc_dapm_widget, | |
848 | power_list)->reg; | |
849 | ||
850 | list_for_each_entry(w, pending, power_list) { | |
851 | cur_mask = 1 << w->shift; | |
852 | BUG_ON(reg != w->reg); | |
853 | ||
854 | if (w->invert) | |
855 | power = !w->power; | |
856 | else | |
857 | power = w->power; | |
858 | ||
859 | mask |= cur_mask; | |
860 | if (power) | |
861 | value |= cur_mask; | |
862 | ||
fd8d3bc0 | 863 | pop_dbg(dapm->dev, card->pop_time, |
b22ead2a MB |
864 | "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n", |
865 | w->name, reg, value, mask); | |
81628103 | 866 | |
68f89ad8 MB |
867 | /* Check for events */ |
868 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMU); | |
869 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMD); | |
81628103 MB |
870 | } |
871 | ||
872 | if (reg >= 0) { | |
fd8d3bc0 | 873 | pop_dbg(dapm->dev, card->pop_time, |
81628103 | 874 | "pop test : Applying 0x%x/0x%x to %x in %dms\n", |
3a45b867 JN |
875 | value, mask, reg, card->pop_time); |
876 | pop_wait(card->pop_time); | |
ce6120cc | 877 | snd_soc_update_bits(dapm->codec, reg, mask, value); |
b22ead2a MB |
878 | } |
879 | ||
81628103 | 880 | list_for_each_entry(w, pending, power_list) { |
68f89ad8 MB |
881 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMU); |
882 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMD); | |
81628103 | 883 | } |
b22ead2a | 884 | } |
42aa3418 | 885 | |
b22ead2a MB |
886 | /* Apply a DAPM power sequence. |
887 | * | |
888 | * We walk over a pre-sorted list of widgets to apply power to. In | |
889 | * order to minimise the number of writes to the device required | |
890 | * multiple widgets will be updated in a single write where possible. | |
891 | * Currently anything that requires more than a single write is not | |
892 | * handled. | |
893 | */ | |
ce6120cc | 894 | static void dapm_seq_run(struct snd_soc_dapm_context *dapm, |
828a842f | 895 | struct list_head *list, int event, bool power_up) |
b22ead2a MB |
896 | { |
897 | struct snd_soc_dapm_widget *w, *n; | |
898 | LIST_HEAD(pending); | |
899 | int cur_sort = -1; | |
20e4859d | 900 | int cur_subseq = -1; |
b22ead2a | 901 | int cur_reg = SND_SOC_NOPM; |
7be31be8 | 902 | struct snd_soc_dapm_context *cur_dapm = NULL; |
474b62d6 | 903 | int ret, i; |
828a842f MB |
904 | int *sort; |
905 | ||
906 | if (power_up) | |
907 | sort = dapm_up_seq; | |
908 | else | |
909 | sort = dapm_down_seq; | |
163cac06 | 910 | |
b22ead2a MB |
911 | list_for_each_entry_safe(w, n, list, power_list) { |
912 | ret = 0; | |
913 | ||
914 | /* Do we need to apply any queued changes? */ | |
7be31be8 | 915 | if (sort[w->id] != cur_sort || w->reg != cur_reg || |
20e4859d | 916 | w->dapm != cur_dapm || w->subseq != cur_subseq) { |
b22ead2a | 917 | if (!list_empty(&pending)) |
7be31be8 | 918 | dapm_seq_run_coalesced(cur_dapm, &pending); |
b22ead2a | 919 | |
474b62d6 MB |
920 | if (cur_dapm && cur_dapm->seq_notifier) { |
921 | for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++) | |
922 | if (sort[i] == cur_sort) | |
923 | cur_dapm->seq_notifier(cur_dapm, | |
f85a9e0d MB |
924 | i, |
925 | cur_subseq); | |
474b62d6 MB |
926 | } |
927 | ||
b22ead2a MB |
928 | INIT_LIST_HEAD(&pending); |
929 | cur_sort = -1; | |
20e4859d | 930 | cur_subseq = -1; |
b22ead2a | 931 | cur_reg = SND_SOC_NOPM; |
7be31be8 | 932 | cur_dapm = NULL; |
b22ead2a MB |
933 | } |
934 | ||
163cac06 MB |
935 | switch (w->id) { |
936 | case snd_soc_dapm_pre: | |
937 | if (!w->event) | |
b22ead2a MB |
938 | list_for_each_entry_safe_continue(w, n, list, |
939 | power_list); | |
163cac06 | 940 | |
b22ead2a | 941 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
942 | ret = w->event(w, |
943 | NULL, SND_SOC_DAPM_PRE_PMU); | |
b22ead2a | 944 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
945 | ret = w->event(w, |
946 | NULL, SND_SOC_DAPM_PRE_PMD); | |
163cac06 MB |
947 | break; |
948 | ||
949 | case snd_soc_dapm_post: | |
950 | if (!w->event) | |
b22ead2a MB |
951 | list_for_each_entry_safe_continue(w, n, list, |
952 | power_list); | |
163cac06 | 953 | |
b22ead2a | 954 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
955 | ret = w->event(w, |
956 | NULL, SND_SOC_DAPM_POST_PMU); | |
b22ead2a | 957 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
958 | ret = w->event(w, |
959 | NULL, SND_SOC_DAPM_POST_PMD); | |
163cac06 MB |
960 | break; |
961 | ||
b22ead2a | 962 | default: |
81628103 MB |
963 | /* Queue it up for application */ |
964 | cur_sort = sort[w->id]; | |
20e4859d | 965 | cur_subseq = w->subseq; |
81628103 | 966 | cur_reg = w->reg; |
7be31be8 | 967 | cur_dapm = w->dapm; |
81628103 MB |
968 | list_move(&w->power_list, &pending); |
969 | break; | |
163cac06 | 970 | } |
b22ead2a MB |
971 | |
972 | if (ret < 0) | |
f7d41ae8 JN |
973 | dev_err(w->dapm->dev, |
974 | "Failed to apply widget power: %d\n", ret); | |
6ea31b9f | 975 | } |
b22ead2a MB |
976 | |
977 | if (!list_empty(&pending)) | |
28e86808 | 978 | dapm_seq_run_coalesced(cur_dapm, &pending); |
474b62d6 MB |
979 | |
980 | if (cur_dapm && cur_dapm->seq_notifier) { | |
981 | for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++) | |
982 | if (sort[i] == cur_sort) | |
983 | cur_dapm->seq_notifier(cur_dapm, | |
f85a9e0d | 984 | i, cur_subseq); |
474b62d6 | 985 | } |
42aa3418 MB |
986 | } |
987 | ||
97404f2e MB |
988 | static void dapm_widget_update(struct snd_soc_dapm_context *dapm) |
989 | { | |
990 | struct snd_soc_dapm_update *update = dapm->update; | |
991 | struct snd_soc_dapm_widget *w; | |
992 | int ret; | |
993 | ||
994 | if (!update) | |
995 | return; | |
996 | ||
997 | w = update->widget; | |
998 | ||
999 | if (w->event && | |
1000 | (w->event_flags & SND_SOC_DAPM_PRE_REG)) { | |
1001 | ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG); | |
1002 | if (ret != 0) | |
1003 | pr_err("%s DAPM pre-event failed: %d\n", | |
1004 | w->name, ret); | |
1005 | } | |
1006 | ||
1007 | ret = snd_soc_update_bits(w->codec, update->reg, update->mask, | |
1008 | update->val); | |
1009 | if (ret < 0) | |
1010 | pr_err("%s DAPM update failed: %d\n", w->name, ret); | |
1011 | ||
1012 | if (w->event && | |
1013 | (w->event_flags & SND_SOC_DAPM_POST_REG)) { | |
1014 | ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG); | |
1015 | if (ret != 0) | |
1016 | pr_err("%s DAPM post-event failed: %d\n", | |
1017 | w->name, ret); | |
1018 | } | |
1019 | } | |
1020 | ||
9d0624a7 MB |
1021 | /* Async callback run prior to DAPM sequences - brings to _PREPARE if |
1022 | * they're changing state. | |
1023 | */ | |
1024 | static void dapm_pre_sequence_async(void *data, async_cookie_t cookie) | |
1025 | { | |
1026 | struct snd_soc_dapm_context *d = data; | |
1027 | int ret; | |
1028 | ||
56fba41f MB |
1029 | /* If we're off and we're not supposed to be go into STANDBY */ |
1030 | if (d->bias_level == SND_SOC_BIAS_OFF && | |
1031 | d->target_bias_level != SND_SOC_BIAS_OFF) { | |
9d0624a7 MB |
1032 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY); |
1033 | if (ret != 0) | |
1034 | dev_err(d->dev, | |
1035 | "Failed to turn on bias: %d\n", ret); | |
1036 | } | |
1037 | ||
56fba41f MB |
1038 | /* Prepare for a STADDBY->ON or ON->STANDBY transition */ |
1039 | if (d->bias_level != d->target_bias_level) { | |
9d0624a7 MB |
1040 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE); |
1041 | if (ret != 0) | |
1042 | dev_err(d->dev, | |
1043 | "Failed to prepare bias: %d\n", ret); | |
1044 | } | |
1045 | } | |
1046 | ||
1047 | /* Async callback run prior to DAPM sequences - brings to their final | |
1048 | * state. | |
1049 | */ | |
1050 | static void dapm_post_sequence_async(void *data, async_cookie_t cookie) | |
1051 | { | |
1052 | struct snd_soc_dapm_context *d = data; | |
1053 | int ret; | |
1054 | ||
1055 | /* If we just powered the last thing off drop to standby bias */ | |
56fba41f MB |
1056 | if (d->bias_level == SND_SOC_BIAS_PREPARE && |
1057 | (d->target_bias_level == SND_SOC_BIAS_STANDBY || | |
1058 | d->target_bias_level == SND_SOC_BIAS_OFF)) { | |
9d0624a7 MB |
1059 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY); |
1060 | if (ret != 0) | |
1061 | dev_err(d->dev, "Failed to apply standby bias: %d\n", | |
1062 | ret); | |
1063 | } | |
97404f2e | 1064 | |
9d0624a7 | 1065 | /* If we're in standby and can support bias off then do that */ |
56fba41f MB |
1066 | if (d->bias_level == SND_SOC_BIAS_STANDBY && |
1067 | d->target_bias_level == SND_SOC_BIAS_OFF) { | |
9d0624a7 MB |
1068 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF); |
1069 | if (ret != 0) | |
1070 | dev_err(d->dev, "Failed to turn off bias: %d\n", ret); | |
1071 | } | |
1072 | ||
1073 | /* If we just powered up then move to active bias */ | |
56fba41f MB |
1074 | if (d->bias_level == SND_SOC_BIAS_PREPARE && |
1075 | d->target_bias_level == SND_SOC_BIAS_ON) { | |
9d0624a7 MB |
1076 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON); |
1077 | if (ret != 0) | |
1078 | dev_err(d->dev, "Failed to apply active bias: %d\n", | |
1079 | ret); | |
1080 | } | |
1081 | } | |
97404f2e | 1082 | |
2b97eabc RP |
1083 | /* |
1084 | * Scan each dapm widget for complete audio path. | |
1085 | * A complete path is a route that has valid endpoints i.e.:- | |
1086 | * | |
1087 | * o DAC to output pin. | |
1088 | * o Input Pin to ADC. | |
1089 | * o Input pin to Output pin (bypass, sidetone) | |
1090 | * o DAC to ADC (loopback). | |
1091 | */ | |
ce6120cc | 1092 | static int dapm_power_widgets(struct snd_soc_dapm_context *dapm, int event) |
2b97eabc | 1093 | { |
12ea2c78 | 1094 | struct snd_soc_card *card = dapm->card; |
2b97eabc | 1095 | struct snd_soc_dapm_widget *w; |
7be31be8 | 1096 | struct snd_soc_dapm_context *d; |
291f3bbc MB |
1097 | LIST_HEAD(up_list); |
1098 | LIST_HEAD(down_list); | |
9d0624a7 | 1099 | LIST_HEAD(async_domain); |
56fba41f | 1100 | enum snd_soc_bias_level bias; |
38357ab2 | 1101 | int power; |
6d3ddc81 | 1102 | |
84e90930 MB |
1103 | trace_snd_soc_dapm_start(card); |
1104 | ||
56fba41f MB |
1105 | list_for_each_entry(d, &card->dapm_list, list) { |
1106 | if (d->n_widgets || d->codec == NULL) { | |
1107 | if (d->idle_bias_off) | |
1108 | d->target_bias_level = SND_SOC_BIAS_OFF; | |
1109 | else | |
1110 | d->target_bias_level = SND_SOC_BIAS_STANDBY; | |
1111 | } | |
1112 | } | |
7be31be8 | 1113 | |
6d3ddc81 MB |
1114 | /* Check which widgets we need to power and store them in |
1115 | * lists indicating if they should be powered up or down. | |
1116 | */ | |
97c866de | 1117 | list_for_each_entry(w, &card->widgets, list) { |
6d3ddc81 MB |
1118 | switch (w->id) { |
1119 | case snd_soc_dapm_pre: | |
828a842f | 1120 | dapm_seq_insert(w, &down_list, false); |
6d3ddc81 MB |
1121 | break; |
1122 | case snd_soc_dapm_post: | |
828a842f | 1123 | dapm_seq_insert(w, &up_list, true); |
6d3ddc81 MB |
1124 | break; |
1125 | ||
1126 | default: | |
1127 | if (!w->power_check) | |
1128 | continue; | |
1129 | ||
9949788b | 1130 | if (!w->force) |
50b6bce5 | 1131 | power = w->power_check(w); |
9949788b MB |
1132 | else |
1133 | power = 1; | |
dfcc9047 MB |
1134 | |
1135 | if (power) { | |
1136 | d = w->dapm; | |
1137 | ||
1138 | /* Supplies and micbiases only bring | |
1139 | * the context up to STANDBY as unless | |
1140 | * something else is active and | |
1141 | * passing audio they generally don't | |
1142 | * require full power. | |
1143 | */ | |
1144 | switch (w->id) { | |
1145 | case snd_soc_dapm_supply: | |
1146 | case snd_soc_dapm_micbias: | |
1147 | if (d->target_bias_level < SND_SOC_BIAS_STANDBY) | |
1148 | d->target_bias_level = SND_SOC_BIAS_STANDBY; | |
1149 | break; | |
1150 | default: | |
1151 | d->target_bias_level = SND_SOC_BIAS_ON; | |
1152 | break; | |
1153 | } | |
1154 | } | |
452c5eaa | 1155 | |
6d3ddc81 MB |
1156 | if (w->power == power) |
1157 | continue; | |
1158 | ||
84e90930 MB |
1159 | trace_snd_soc_dapm_widget_power(w, power); |
1160 | ||
6d3ddc81 | 1161 | if (power) |
828a842f | 1162 | dapm_seq_insert(w, &up_list, true); |
6d3ddc81 | 1163 | else |
828a842f | 1164 | dapm_seq_insert(w, &down_list, false); |
6d3ddc81 MB |
1165 | |
1166 | w->power = power; | |
1167 | break; | |
1168 | } | |
2b97eabc RP |
1169 | } |
1170 | ||
b14b76a5 MB |
1171 | /* If there are no DAPM widgets then try to figure out power from the |
1172 | * event type. | |
1173 | */ | |
97c866de | 1174 | if (!dapm->n_widgets) { |
b14b76a5 MB |
1175 | switch (event) { |
1176 | case SND_SOC_DAPM_STREAM_START: | |
1177 | case SND_SOC_DAPM_STREAM_RESUME: | |
56fba41f | 1178 | dapm->target_bias_level = SND_SOC_BIAS_ON; |
b14b76a5 | 1179 | break; |
862af8ad | 1180 | case SND_SOC_DAPM_STREAM_STOP: |
56fba41f MB |
1181 | if (dapm->codec->active) |
1182 | dapm->target_bias_level = SND_SOC_BIAS_ON; | |
1183 | else | |
1184 | dapm->target_bias_level = SND_SOC_BIAS_STANDBY; | |
862af8ad | 1185 | break; |
50b6bce5 | 1186 | case SND_SOC_DAPM_STREAM_SUSPEND: |
56fba41f | 1187 | dapm->target_bias_level = SND_SOC_BIAS_STANDBY; |
50b6bce5 | 1188 | break; |
b14b76a5 | 1189 | case SND_SOC_DAPM_STREAM_NOP: |
56fba41f | 1190 | dapm->target_bias_level = dapm->bias_level; |
50b6bce5 | 1191 | break; |
b14b76a5 MB |
1192 | default: |
1193 | break; | |
1194 | } | |
1195 | } | |
1196 | ||
52ba67bf | 1197 | /* Force all contexts in the card to the same bias state */ |
56fba41f | 1198 | bias = SND_SOC_BIAS_OFF; |
52ba67bf | 1199 | list_for_each_entry(d, &card->dapm_list, list) |
56fba41f MB |
1200 | if (d->target_bias_level > bias) |
1201 | bias = d->target_bias_level; | |
52ba67bf | 1202 | list_for_each_entry(d, &card->dapm_list, list) |
56fba41f | 1203 | d->target_bias_level = bias; |
52ba67bf MB |
1204 | |
1205 | ||
9d0624a7 MB |
1206 | /* Run all the bias changes in parallel */ |
1207 | list_for_each_entry(d, &dapm->card->dapm_list, list) | |
1208 | async_schedule_domain(dapm_pre_sequence_async, d, | |
1209 | &async_domain); | |
1210 | async_synchronize_full_domain(&async_domain); | |
452c5eaa | 1211 | |
6d3ddc81 | 1212 | /* Power down widgets first; try to avoid amplifying pops. */ |
828a842f | 1213 | dapm_seq_run(dapm, &down_list, event, false); |
2b97eabc | 1214 | |
97404f2e MB |
1215 | dapm_widget_update(dapm); |
1216 | ||
6d3ddc81 | 1217 | /* Now power up. */ |
828a842f | 1218 | dapm_seq_run(dapm, &up_list, event, true); |
2b97eabc | 1219 | |
9d0624a7 MB |
1220 | /* Run all the bias changes in parallel */ |
1221 | list_for_each_entry(d, &dapm->card->dapm_list, list) | |
1222 | async_schedule_domain(dapm_post_sequence_async, d, | |
1223 | &async_domain); | |
1224 | async_synchronize_full_domain(&async_domain); | |
452c5eaa | 1225 | |
fd8d3bc0 JN |
1226 | pop_dbg(dapm->dev, card->pop_time, |
1227 | "DAPM sequencing finished, waiting %dms\n", card->pop_time); | |
3a45b867 | 1228 | pop_wait(card->pop_time); |
cb507e7e | 1229 | |
84e90930 MB |
1230 | trace_snd_soc_dapm_done(card); |
1231 | ||
42aa3418 | 1232 | return 0; |
2b97eabc RP |
1233 | } |
1234 | ||
79fb9387 MB |
1235 | #ifdef CONFIG_DEBUG_FS |
1236 | static int dapm_widget_power_open_file(struct inode *inode, struct file *file) | |
1237 | { | |
1238 | file->private_data = inode->i_private; | |
1239 | return 0; | |
1240 | } | |
1241 | ||
1242 | static ssize_t dapm_widget_power_read_file(struct file *file, | |
1243 | char __user *user_buf, | |
1244 | size_t count, loff_t *ppos) | |
1245 | { | |
1246 | struct snd_soc_dapm_widget *w = file->private_data; | |
1247 | char *buf; | |
1248 | int in, out; | |
1249 | ssize_t ret; | |
1250 | struct snd_soc_dapm_path *p = NULL; | |
1251 | ||
1252 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); | |
1253 | if (!buf) | |
1254 | return -ENOMEM; | |
1255 | ||
1256 | in = is_connected_input_ep(w); | |
ce6120cc | 1257 | dapm_clear_walk(w->dapm); |
79fb9387 | 1258 | out = is_connected_output_ep(w); |
ce6120cc | 1259 | dapm_clear_walk(w->dapm); |
79fb9387 | 1260 | |
d033c36a | 1261 | ret = snprintf(buf, PAGE_SIZE, "%s: %s in %d out %d", |
79fb9387 MB |
1262 | w->name, w->power ? "On" : "Off", in, out); |
1263 | ||
d033c36a MB |
1264 | if (w->reg >= 0) |
1265 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
1266 | " - R%d(0x%x) bit %d", | |
1267 | w->reg, w->reg, w->shift); | |
1268 | ||
1269 | ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n"); | |
1270 | ||
3eef08ba MB |
1271 | if (w->sname) |
1272 | ret += snprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n", | |
1273 | w->sname, | |
1274 | w->active ? "active" : "inactive"); | |
79fb9387 MB |
1275 | |
1276 | list_for_each_entry(p, &w->sources, list_sink) { | |
215edda3 MB |
1277 | if (p->connected && !p->connected(w, p->sink)) |
1278 | continue; | |
1279 | ||
79fb9387 MB |
1280 | if (p->connect) |
1281 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
67f5ed6e | 1282 | " in \"%s\" \"%s\"\n", |
79fb9387 MB |
1283 | p->name ? p->name : "static", |
1284 | p->source->name); | |
1285 | } | |
1286 | list_for_each_entry(p, &w->sinks, list_source) { | |
215edda3 MB |
1287 | if (p->connected && !p->connected(w, p->sink)) |
1288 | continue; | |
1289 | ||
79fb9387 MB |
1290 | if (p->connect) |
1291 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
67f5ed6e | 1292 | " out \"%s\" \"%s\"\n", |
79fb9387 MB |
1293 | p->name ? p->name : "static", |
1294 | p->sink->name); | |
1295 | } | |
1296 | ||
1297 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); | |
1298 | ||
1299 | kfree(buf); | |
1300 | return ret; | |
1301 | } | |
1302 | ||
1303 | static const struct file_operations dapm_widget_power_fops = { | |
1304 | .open = dapm_widget_power_open_file, | |
1305 | .read = dapm_widget_power_read_file, | |
6038f373 | 1306 | .llseek = default_llseek, |
79fb9387 MB |
1307 | }; |
1308 | ||
ef49e4fa MB |
1309 | static int dapm_bias_open_file(struct inode *inode, struct file *file) |
1310 | { | |
1311 | file->private_data = inode->i_private; | |
1312 | return 0; | |
1313 | } | |
1314 | ||
1315 | static ssize_t dapm_bias_read_file(struct file *file, char __user *user_buf, | |
1316 | size_t count, loff_t *ppos) | |
1317 | { | |
1318 | struct snd_soc_dapm_context *dapm = file->private_data; | |
1319 | char *level; | |
1320 | ||
1321 | switch (dapm->bias_level) { | |
1322 | case SND_SOC_BIAS_ON: | |
1323 | level = "On\n"; | |
1324 | break; | |
1325 | case SND_SOC_BIAS_PREPARE: | |
1326 | level = "Prepare\n"; | |
1327 | break; | |
1328 | case SND_SOC_BIAS_STANDBY: | |
1329 | level = "Standby\n"; | |
1330 | break; | |
1331 | case SND_SOC_BIAS_OFF: | |
1332 | level = "Off\n"; | |
1333 | break; | |
1334 | default: | |
1335 | BUG(); | |
1336 | level = "Unknown\n"; | |
1337 | break; | |
1338 | } | |
1339 | ||
1340 | return simple_read_from_buffer(user_buf, count, ppos, level, | |
1341 | strlen(level)); | |
1342 | } | |
1343 | ||
1344 | static const struct file_operations dapm_bias_fops = { | |
1345 | .open = dapm_bias_open_file, | |
1346 | .read = dapm_bias_read_file, | |
1347 | .llseek = default_llseek, | |
1348 | }; | |
1349 | ||
8eecaf62 LPC |
1350 | void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm, |
1351 | struct dentry *parent) | |
79fb9387 | 1352 | { |
79fb9387 MB |
1353 | struct dentry *d; |
1354 | ||
8eecaf62 LPC |
1355 | dapm->debugfs_dapm = debugfs_create_dir("dapm", parent); |
1356 | ||
1357 | if (!dapm->debugfs_dapm) { | |
1358 | printk(KERN_WARNING | |
1359 | "Failed to create DAPM debugfs directory\n"); | |
79fb9387 | 1360 | return; |
8eecaf62 | 1361 | } |
79fb9387 | 1362 | |
ef49e4fa MB |
1363 | d = debugfs_create_file("bias_level", 0444, |
1364 | dapm->debugfs_dapm, dapm, | |
1365 | &dapm_bias_fops); | |
1366 | if (!d) | |
1367 | dev_warn(dapm->dev, | |
1368 | "ASoC: Failed to create bias level debugfs file\n"); | |
d5d1e0be | 1369 | } |
ef49e4fa | 1370 | |
d5d1e0be LPC |
1371 | static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w) |
1372 | { | |
1373 | struct snd_soc_dapm_context *dapm = w->dapm; | |
1374 | struct dentry *d; | |
79fb9387 | 1375 | |
d5d1e0be LPC |
1376 | if (!dapm->debugfs_dapm || !w->name) |
1377 | return; | |
1378 | ||
1379 | d = debugfs_create_file(w->name, 0444, | |
1380 | dapm->debugfs_dapm, w, | |
1381 | &dapm_widget_power_fops); | |
1382 | if (!d) | |
1383 | dev_warn(w->dapm->dev, | |
1384 | "ASoC: Failed to create %s debugfs file\n", | |
1385 | w->name); | |
79fb9387 | 1386 | } |
d5d1e0be | 1387 | |
6c45e126 LPC |
1388 | static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm) |
1389 | { | |
1390 | debugfs_remove_recursive(dapm->debugfs_dapm); | |
1391 | } | |
1392 | ||
79fb9387 | 1393 | #else |
8eecaf62 LPC |
1394 | void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm, |
1395 | struct dentry *parent) | |
79fb9387 MB |
1396 | { |
1397 | } | |
d5d1e0be LPC |
1398 | |
1399 | static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w) | |
1400 | { | |
1401 | } | |
1402 | ||
6c45e126 LPC |
1403 | static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm) |
1404 | { | |
1405 | } | |
1406 | ||
79fb9387 MB |
1407 | #endif |
1408 | ||
2b97eabc | 1409 | /* test and update the power status of a mux widget */ |
d9c96cf3 | 1410 | static int dapm_mux_update_power(struct snd_soc_dapm_widget *widget, |
3a65577d MB |
1411 | struct snd_kcontrol *kcontrol, int change, |
1412 | int mux, struct soc_enum *e) | |
2b97eabc RP |
1413 | { |
1414 | struct snd_soc_dapm_path *path; | |
1415 | int found = 0; | |
1416 | ||
eff317d0 | 1417 | if (widget->id != snd_soc_dapm_mux && |
24ff33ac | 1418 | widget->id != snd_soc_dapm_virt_mux && |
eff317d0 | 1419 | widget->id != snd_soc_dapm_value_mux) |
2b97eabc RP |
1420 | return -ENODEV; |
1421 | ||
3a65577d | 1422 | if (!change) |
2b97eabc RP |
1423 | return 0; |
1424 | ||
1425 | /* find dapm widget path assoc with kcontrol */ | |
8ddab3f5 | 1426 | list_for_each_entry(path, &widget->dapm->card->paths, list) { |
2b97eabc RP |
1427 | if (path->kcontrol != kcontrol) |
1428 | continue; | |
1429 | ||
cb01e2b9 | 1430 | if (!path->name || !e->texts[mux]) |
2b97eabc RP |
1431 | continue; |
1432 | ||
1433 | found = 1; | |
1434 | /* we now need to match the string in the enum to the path */ | |
cb01e2b9 | 1435 | if (!(strcmp(path->name, e->texts[mux]))) |
2b97eabc RP |
1436 | path->connect = 1; /* new connection */ |
1437 | else | |
1438 | path->connect = 0; /* old connection must be powered down */ | |
1439 | } | |
1440 | ||
b91b8fa0 | 1441 | if (found) |
ce6120cc | 1442 | dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc RP |
1443 | |
1444 | return 0; | |
1445 | } | |
2b97eabc | 1446 | |
1b075e3f | 1447 | /* test and update the power status of a mixer or switch widget */ |
d9c96cf3 | 1448 | static int dapm_mixer_update_power(struct snd_soc_dapm_widget *widget, |
283375ce | 1449 | struct snd_kcontrol *kcontrol, int connect) |
2b97eabc RP |
1450 | { |
1451 | struct snd_soc_dapm_path *path; | |
1452 | int found = 0; | |
1453 | ||
1b075e3f | 1454 | if (widget->id != snd_soc_dapm_mixer && |
ca9c1aae | 1455 | widget->id != snd_soc_dapm_mixer_named_ctl && |
1b075e3f | 1456 | widget->id != snd_soc_dapm_switch) |
2b97eabc RP |
1457 | return -ENODEV; |
1458 | ||
2b97eabc | 1459 | /* find dapm widget path assoc with kcontrol */ |
8ddab3f5 | 1460 | list_for_each_entry(path, &widget->dapm->card->paths, list) { |
2b97eabc RP |
1461 | if (path->kcontrol != kcontrol) |
1462 | continue; | |
1463 | ||
1464 | /* found, now check type */ | |
1465 | found = 1; | |
283375ce | 1466 | path->connect = connect; |
2b97eabc RP |
1467 | break; |
1468 | } | |
1469 | ||
b91b8fa0 | 1470 | if (found) |
ce6120cc | 1471 | dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc RP |
1472 | |
1473 | return 0; | |
1474 | } | |
2b97eabc RP |
1475 | |
1476 | /* show dapm widget status in sys fs */ | |
1477 | static ssize_t dapm_widget_show(struct device *dev, | |
1478 | struct device_attribute *attr, char *buf) | |
1479 | { | |
f0fba2ad LG |
1480 | struct snd_soc_pcm_runtime *rtd = |
1481 | container_of(dev, struct snd_soc_pcm_runtime, dev); | |
1482 | struct snd_soc_codec *codec =rtd->codec; | |
2b97eabc RP |
1483 | struct snd_soc_dapm_widget *w; |
1484 | int count = 0; | |
1485 | char *state = "not set"; | |
1486 | ||
97c866de JN |
1487 | list_for_each_entry(w, &codec->card->widgets, list) { |
1488 | if (w->dapm != &codec->dapm) | |
1489 | continue; | |
2b97eabc RP |
1490 | |
1491 | /* only display widgets that burnm power */ | |
1492 | switch (w->id) { | |
1493 | case snd_soc_dapm_hp: | |
1494 | case snd_soc_dapm_mic: | |
1495 | case snd_soc_dapm_spk: | |
1496 | case snd_soc_dapm_line: | |
1497 | case snd_soc_dapm_micbias: | |
1498 | case snd_soc_dapm_dac: | |
1499 | case snd_soc_dapm_adc: | |
1500 | case snd_soc_dapm_pga: | |
d88429a6 | 1501 | case snd_soc_dapm_out_drv: |
2b97eabc | 1502 | case snd_soc_dapm_mixer: |
ca9c1aae | 1503 | case snd_soc_dapm_mixer_named_ctl: |
246d0a17 | 1504 | case snd_soc_dapm_supply: |
2b97eabc RP |
1505 | if (w->name) |
1506 | count += sprintf(buf + count, "%s: %s\n", | |
1507 | w->name, w->power ? "On":"Off"); | |
1508 | break; | |
1509 | default: | |
1510 | break; | |
1511 | } | |
1512 | } | |
1513 | ||
ce6120cc | 1514 | switch (codec->dapm.bias_level) { |
0be9898a MB |
1515 | case SND_SOC_BIAS_ON: |
1516 | state = "On"; | |
2b97eabc | 1517 | break; |
0be9898a MB |
1518 | case SND_SOC_BIAS_PREPARE: |
1519 | state = "Prepare"; | |
2b97eabc | 1520 | break; |
0be9898a MB |
1521 | case SND_SOC_BIAS_STANDBY: |
1522 | state = "Standby"; | |
2b97eabc | 1523 | break; |
0be9898a MB |
1524 | case SND_SOC_BIAS_OFF: |
1525 | state = "Off"; | |
2b97eabc RP |
1526 | break; |
1527 | } | |
1528 | count += sprintf(buf + count, "PM State: %s\n", state); | |
1529 | ||
1530 | return count; | |
1531 | } | |
1532 | ||
1533 | static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL); | |
1534 | ||
1535 | int snd_soc_dapm_sys_add(struct device *dev) | |
1536 | { | |
12ef193d | 1537 | return device_create_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1538 | } |
1539 | ||
1540 | static void snd_soc_dapm_sys_remove(struct device *dev) | |
1541 | { | |
aef90843 | 1542 | device_remove_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1543 | } |
1544 | ||
1545 | /* free all dapm widgets and resources */ | |
ce6120cc | 1546 | static void dapm_free_widgets(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
1547 | { |
1548 | struct snd_soc_dapm_widget *w, *next_w; | |
1549 | struct snd_soc_dapm_path *p, *next_p; | |
1550 | ||
97c866de JN |
1551 | list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) { |
1552 | if (w->dapm != dapm) | |
1553 | continue; | |
2b97eabc | 1554 | list_del(&w->list); |
8ddab3f5 JN |
1555 | /* |
1556 | * remove source and sink paths associated to this widget. | |
1557 | * While removing the path, remove reference to it from both | |
1558 | * source and sink widgets so that path is removed only once. | |
1559 | */ | |
1560 | list_for_each_entry_safe(p, next_p, &w->sources, list_sink) { | |
1561 | list_del(&p->list_sink); | |
1562 | list_del(&p->list_source); | |
1563 | list_del(&p->list); | |
1564 | kfree(p->long_name); | |
1565 | kfree(p); | |
1566 | } | |
1567 | list_for_each_entry_safe(p, next_p, &w->sinks, list_source) { | |
1568 | list_del(&p->list_sink); | |
1569 | list_del(&p->list_source); | |
1570 | list_del(&p->list); | |
1571 | kfree(p->long_name); | |
1572 | kfree(p); | |
1573 | } | |
fad59888 | 1574 | kfree(w->kcontrols); |
ead9b919 | 1575 | kfree(w->name); |
2b97eabc RP |
1576 | kfree(w); |
1577 | } | |
2b97eabc RP |
1578 | } |
1579 | ||
91a5fca4 LPC |
1580 | static struct snd_soc_dapm_widget *dapm_find_widget( |
1581 | struct snd_soc_dapm_context *dapm, const char *pin, | |
1582 | bool search_other_contexts) | |
a5302181 LG |
1583 | { |
1584 | struct snd_soc_dapm_widget *w; | |
91a5fca4 | 1585 | struct snd_soc_dapm_widget *fallback = NULL; |
a5302181 | 1586 | |
97c866de | 1587 | list_for_each_entry(w, &dapm->card->widgets, list) { |
a5302181 | 1588 | if (!strcmp(w->name, pin)) { |
91a5fca4 LPC |
1589 | if (w->dapm == dapm) |
1590 | return w; | |
1591 | else | |
1592 | fallback = w; | |
a5302181 LG |
1593 | } |
1594 | } | |
1595 | ||
91a5fca4 LPC |
1596 | if (search_other_contexts) |
1597 | return fallback; | |
1598 | ||
1599 | return NULL; | |
1600 | } | |
1601 | ||
1602 | static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm, | |
1603 | const char *pin, int status) | |
1604 | { | |
1605 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); | |
1606 | ||
1607 | if (!w) { | |
1608 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); | |
1609 | return -EINVAL; | |
0d86733c MB |
1610 | } |
1611 | ||
91a5fca4 LPC |
1612 | w->connected = status; |
1613 | if (status == 0) | |
1614 | w->force = 0; | |
1615 | ||
1616 | return 0; | |
a5302181 LG |
1617 | } |
1618 | ||
2b97eabc | 1619 | /** |
a5302181 | 1620 | * snd_soc_dapm_sync - scan and power dapm paths |
ce6120cc | 1621 | * @dapm: DAPM context |
2b97eabc RP |
1622 | * |
1623 | * Walks all dapm audio paths and powers widgets according to their | |
1624 | * stream or path usage. | |
1625 | * | |
1626 | * Returns 0 for success. | |
1627 | */ | |
ce6120cc | 1628 | int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm) |
2b97eabc | 1629 | { |
ce6120cc | 1630 | return dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc | 1631 | } |
a5302181 | 1632 | EXPORT_SYMBOL_GPL(snd_soc_dapm_sync); |
2b97eabc | 1633 | |
ce6120cc | 1634 | static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm, |
215edda3 | 1635 | const struct snd_soc_dapm_route *route) |
2b97eabc RP |
1636 | { |
1637 | struct snd_soc_dapm_path *path; | |
1638 | struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w; | |
97c866de | 1639 | struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL; |
ead9b919 | 1640 | const char *sink; |
215edda3 | 1641 | const char *control = route->control; |
ead9b919 JN |
1642 | const char *source; |
1643 | char prefixed_sink[80]; | |
1644 | char prefixed_source[80]; | |
2b97eabc RP |
1645 | int ret = 0; |
1646 | ||
88e8b9a8 | 1647 | if (dapm->codec && dapm->codec->name_prefix) { |
ead9b919 JN |
1648 | snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s", |
1649 | dapm->codec->name_prefix, route->sink); | |
1650 | sink = prefixed_sink; | |
1651 | snprintf(prefixed_source, sizeof(prefixed_source), "%s %s", | |
1652 | dapm->codec->name_prefix, route->source); | |
1653 | source = prefixed_source; | |
1654 | } else { | |
1655 | sink = route->sink; | |
1656 | source = route->source; | |
1657 | } | |
1658 | ||
97c866de JN |
1659 | /* |
1660 | * find src and dest widgets over all widgets but favor a widget from | |
1661 | * current DAPM context | |
1662 | */ | |
1663 | list_for_each_entry(w, &dapm->card->widgets, list) { | |
2b97eabc | 1664 | if (!wsink && !(strcmp(w->name, sink))) { |
97c866de JN |
1665 | wtsink = w; |
1666 | if (w->dapm == dapm) | |
1667 | wsink = w; | |
2b97eabc RP |
1668 | continue; |
1669 | } | |
1670 | if (!wsource && !(strcmp(w->name, source))) { | |
97c866de JN |
1671 | wtsource = w; |
1672 | if (w->dapm == dapm) | |
1673 | wsource = w; | |
2b97eabc RP |
1674 | } |
1675 | } | |
97c866de JN |
1676 | /* use widget from another DAPM context if not found from this */ |
1677 | if (!wsink) | |
1678 | wsink = wtsink; | |
1679 | if (!wsource) | |
1680 | wsource = wtsource; | |
2b97eabc RP |
1681 | |
1682 | if (wsource == NULL || wsink == NULL) | |
1683 | return -ENODEV; | |
1684 | ||
1685 | path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL); | |
1686 | if (!path) | |
1687 | return -ENOMEM; | |
1688 | ||
1689 | path->source = wsource; | |
1690 | path->sink = wsink; | |
215edda3 | 1691 | path->connected = route->connected; |
2b97eabc RP |
1692 | INIT_LIST_HEAD(&path->list); |
1693 | INIT_LIST_HEAD(&path->list_source); | |
1694 | INIT_LIST_HEAD(&path->list_sink); | |
1695 | ||
1696 | /* check for external widgets */ | |
1697 | if (wsink->id == snd_soc_dapm_input) { | |
1698 | if (wsource->id == snd_soc_dapm_micbias || | |
1699 | wsource->id == snd_soc_dapm_mic || | |
087d53ab RC |
1700 | wsource->id == snd_soc_dapm_line || |
1701 | wsource->id == snd_soc_dapm_output) | |
2b97eabc RP |
1702 | wsink->ext = 1; |
1703 | } | |
1704 | if (wsource->id == snd_soc_dapm_output) { | |
1705 | if (wsink->id == snd_soc_dapm_spk || | |
1706 | wsink->id == snd_soc_dapm_hp || | |
1e39221e SF |
1707 | wsink->id == snd_soc_dapm_line || |
1708 | wsink->id == snd_soc_dapm_input) | |
2b97eabc RP |
1709 | wsource->ext = 1; |
1710 | } | |
1711 | ||
1712 | /* connect static paths */ | |
1713 | if (control == NULL) { | |
8ddab3f5 | 1714 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
1715 | list_add(&path->list_sink, &wsink->sources); |
1716 | list_add(&path->list_source, &wsource->sinks); | |
1717 | path->connect = 1; | |
1718 | return 0; | |
1719 | } | |
1720 | ||
1721 | /* connect dynamic paths */ | |
dc2bea61 | 1722 | switch (wsink->id) { |
2b97eabc RP |
1723 | case snd_soc_dapm_adc: |
1724 | case snd_soc_dapm_dac: | |
1725 | case snd_soc_dapm_pga: | |
d88429a6 | 1726 | case snd_soc_dapm_out_drv: |
2b97eabc RP |
1727 | case snd_soc_dapm_input: |
1728 | case snd_soc_dapm_output: | |
1729 | case snd_soc_dapm_micbias: | |
1730 | case snd_soc_dapm_vmid: | |
1731 | case snd_soc_dapm_pre: | |
1732 | case snd_soc_dapm_post: | |
246d0a17 | 1733 | case snd_soc_dapm_supply: |
010ff262 MB |
1734 | case snd_soc_dapm_aif_in: |
1735 | case snd_soc_dapm_aif_out: | |
8ddab3f5 | 1736 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
1737 | list_add(&path->list_sink, &wsink->sources); |
1738 | list_add(&path->list_source, &wsource->sinks); | |
1739 | path->connect = 1; | |
1740 | return 0; | |
1741 | case snd_soc_dapm_mux: | |
24ff33ac | 1742 | case snd_soc_dapm_virt_mux: |
74155556 | 1743 | case snd_soc_dapm_value_mux: |
ce6120cc | 1744 | ret = dapm_connect_mux(dapm, wsource, wsink, path, control, |
82cfecdc | 1745 | &wsink->kcontrol_news[0]); |
2b97eabc RP |
1746 | if (ret != 0) |
1747 | goto err; | |
1748 | break; | |
1749 | case snd_soc_dapm_switch: | |
1750 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1751 | case snd_soc_dapm_mixer_named_ctl: |
ce6120cc | 1752 | ret = dapm_connect_mixer(dapm, wsource, wsink, path, control); |
2b97eabc RP |
1753 | if (ret != 0) |
1754 | goto err; | |
1755 | break; | |
1756 | case snd_soc_dapm_hp: | |
1757 | case snd_soc_dapm_mic: | |
1758 | case snd_soc_dapm_line: | |
1759 | case snd_soc_dapm_spk: | |
8ddab3f5 | 1760 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
1761 | list_add(&path->list_sink, &wsink->sources); |
1762 | list_add(&path->list_source, &wsource->sinks); | |
1763 | path->connect = 0; | |
1764 | return 0; | |
1765 | } | |
1766 | return 0; | |
1767 | ||
1768 | err: | |
f7d41ae8 JN |
1769 | dev_warn(dapm->dev, "asoc: no dapm match for %s --> %s --> %s\n", |
1770 | source, control, sink); | |
2b97eabc RP |
1771 | kfree(path); |
1772 | return ret; | |
1773 | } | |
105f1c28 | 1774 | |
105f1c28 MB |
1775 | /** |
1776 | * snd_soc_dapm_add_routes - Add routes between DAPM widgets | |
ce6120cc | 1777 | * @dapm: DAPM context |
105f1c28 MB |
1778 | * @route: audio routes |
1779 | * @num: number of routes | |
1780 | * | |
1781 | * Connects 2 dapm widgets together via a named audio path. The sink is | |
1782 | * the widget receiving the audio signal, whilst the source is the sender | |
1783 | * of the audio signal. | |
1784 | * | |
1785 | * Returns 0 for success else error. On error all resources can be freed | |
1786 | * with a call to snd_soc_card_free(). | |
1787 | */ | |
ce6120cc | 1788 | int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm, |
105f1c28 MB |
1789 | const struct snd_soc_dapm_route *route, int num) |
1790 | { | |
1791 | int i, ret; | |
1792 | ||
1793 | for (i = 0; i < num; i++) { | |
ce6120cc | 1794 | ret = snd_soc_dapm_add_route(dapm, route); |
105f1c28 | 1795 | if (ret < 0) { |
f7d41ae8 JN |
1796 | dev_err(dapm->dev, "Failed to add route %s->%s\n", |
1797 | route->source, route->sink); | |
105f1c28 MB |
1798 | return ret; |
1799 | } | |
1800 | route++; | |
1801 | } | |
1802 | ||
1803 | return 0; | |
1804 | } | |
1805 | EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes); | |
1806 | ||
2b97eabc RP |
1807 | /** |
1808 | * snd_soc_dapm_new_widgets - add new dapm widgets | |
ce6120cc | 1809 | * @dapm: DAPM context |
2b97eabc RP |
1810 | * |
1811 | * Checks the codec for any new dapm widgets and creates them if found. | |
1812 | * | |
1813 | * Returns 0 for success. | |
1814 | */ | |
ce6120cc | 1815 | int snd_soc_dapm_new_widgets(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
1816 | { |
1817 | struct snd_soc_dapm_widget *w; | |
b66a70d5 | 1818 | unsigned int val; |
2b97eabc | 1819 | |
97c866de | 1820 | list_for_each_entry(w, &dapm->card->widgets, list) |
2b97eabc RP |
1821 | { |
1822 | if (w->new) | |
1823 | continue; | |
1824 | ||
fad59888 SW |
1825 | if (w->num_kcontrols) { |
1826 | w->kcontrols = kzalloc(w->num_kcontrols * | |
1827 | sizeof(struct snd_kcontrol *), | |
1828 | GFP_KERNEL); | |
1829 | if (!w->kcontrols) | |
1830 | return -ENOMEM; | |
1831 | } | |
1832 | ||
2b97eabc RP |
1833 | switch(w->id) { |
1834 | case snd_soc_dapm_switch: | |
1835 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1836 | case snd_soc_dapm_mixer_named_ctl: |
b75576d7 | 1837 | w->power_check = dapm_generic_check_power; |
ce6120cc | 1838 | dapm_new_mixer(dapm, w); |
2b97eabc RP |
1839 | break; |
1840 | case snd_soc_dapm_mux: | |
24ff33ac | 1841 | case snd_soc_dapm_virt_mux: |
2e72f8e3 | 1842 | case snd_soc_dapm_value_mux: |
b75576d7 | 1843 | w->power_check = dapm_generic_check_power; |
ce6120cc | 1844 | dapm_new_mux(dapm, w); |
2b97eabc RP |
1845 | break; |
1846 | case snd_soc_dapm_adc: | |
010ff262 | 1847 | case snd_soc_dapm_aif_out: |
b75576d7 MB |
1848 | w->power_check = dapm_adc_check_power; |
1849 | break; | |
2b97eabc | 1850 | case snd_soc_dapm_dac: |
010ff262 | 1851 | case snd_soc_dapm_aif_in: |
b75576d7 MB |
1852 | w->power_check = dapm_dac_check_power; |
1853 | break; | |
2b97eabc | 1854 | case snd_soc_dapm_pga: |
d88429a6 | 1855 | case snd_soc_dapm_out_drv: |
b75576d7 | 1856 | w->power_check = dapm_generic_check_power; |
ce6120cc | 1857 | dapm_new_pga(dapm, w); |
2b97eabc RP |
1858 | break; |
1859 | case snd_soc_dapm_input: | |
1860 | case snd_soc_dapm_output: | |
1861 | case snd_soc_dapm_micbias: | |
1862 | case snd_soc_dapm_spk: | |
1863 | case snd_soc_dapm_hp: | |
1864 | case snd_soc_dapm_mic: | |
1865 | case snd_soc_dapm_line: | |
b75576d7 MB |
1866 | w->power_check = dapm_generic_check_power; |
1867 | break; | |
246d0a17 MB |
1868 | case snd_soc_dapm_supply: |
1869 | w->power_check = dapm_supply_check_power; | |
2b97eabc RP |
1870 | case snd_soc_dapm_vmid: |
1871 | case snd_soc_dapm_pre: | |
1872 | case snd_soc_dapm_post: | |
1873 | break; | |
1874 | } | |
b66a70d5 MB |
1875 | |
1876 | /* Read the initial power state from the device */ | |
1877 | if (w->reg >= 0) { | |
1878 | val = snd_soc_read(w->codec, w->reg); | |
1879 | val &= 1 << w->shift; | |
1880 | if (w->invert) | |
1881 | val = !val; | |
1882 | ||
1883 | if (val) | |
1884 | w->power = 1; | |
1885 | } | |
1886 | ||
2b97eabc | 1887 | w->new = 1; |
d5d1e0be LPC |
1888 | |
1889 | dapm_debugfs_add_widget(w); | |
2b97eabc RP |
1890 | } |
1891 | ||
ce6120cc | 1892 | dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc RP |
1893 | return 0; |
1894 | } | |
1895 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets); | |
1896 | ||
1897 | /** | |
1898 | * snd_soc_dapm_get_volsw - dapm mixer get callback | |
1899 | * @kcontrol: mixer control | |
ac11a2b3 | 1900 | * @ucontrol: control element information |
2b97eabc RP |
1901 | * |
1902 | * Callback to get the value of a dapm mixer control. | |
1903 | * | |
1904 | * Returns 0 for success. | |
1905 | */ | |
1906 | int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol, | |
1907 | struct snd_ctl_elem_value *ucontrol) | |
1908 | { | |
fafd2176 SW |
1909 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
1910 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
4eaa9819 JS |
1911 | struct soc_mixer_control *mc = |
1912 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
1913 | unsigned int reg = mc->reg; |
1914 | unsigned int shift = mc->shift; | |
1915 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1916 | int max = mc->max; |
815ecf8d JS |
1917 | unsigned int invert = mc->invert; |
1918 | unsigned int mask = (1 << fls(max)) - 1; | |
2b97eabc | 1919 | |
2b97eabc RP |
1920 | ucontrol->value.integer.value[0] = |
1921 | (snd_soc_read(widget->codec, reg) >> shift) & mask; | |
1922 | if (shift != rshift) | |
1923 | ucontrol->value.integer.value[1] = | |
1924 | (snd_soc_read(widget->codec, reg) >> rshift) & mask; | |
1925 | if (invert) { | |
1926 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1927 | max - ucontrol->value.integer.value[0]; |
2b97eabc RP |
1928 | if (shift != rshift) |
1929 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 1930 | max - ucontrol->value.integer.value[1]; |
2b97eabc RP |
1931 | } |
1932 | ||
1933 | return 0; | |
1934 | } | |
1935 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw); | |
1936 | ||
1937 | /** | |
1938 | * snd_soc_dapm_put_volsw - dapm mixer set callback | |
1939 | * @kcontrol: mixer control | |
ac11a2b3 | 1940 | * @ucontrol: control element information |
2b97eabc RP |
1941 | * |
1942 | * Callback to set the value of a dapm mixer control. | |
1943 | * | |
1944 | * Returns 0 for success. | |
1945 | */ | |
1946 | int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, | |
1947 | struct snd_ctl_elem_value *ucontrol) | |
1948 | { | |
fafd2176 SW |
1949 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
1950 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
1951 | struct snd_soc_codec *codec = widget->codec; | |
4eaa9819 JS |
1952 | struct soc_mixer_control *mc = |
1953 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
1954 | unsigned int reg = mc->reg; |
1955 | unsigned int shift = mc->shift; | |
4eaa9819 | 1956 | int max = mc->max; |
815ecf8d JS |
1957 | unsigned int mask = (1 << fls(max)) - 1; |
1958 | unsigned int invert = mc->invert; | |
e9cf7049 | 1959 | unsigned int val; |
97404f2e MB |
1960 | int connect, change; |
1961 | struct snd_soc_dapm_update update; | |
fafd2176 | 1962 | int wi; |
2b97eabc RP |
1963 | |
1964 | val = (ucontrol->value.integer.value[0] & mask); | |
1965 | ||
1966 | if (invert) | |
a7a4ac86 | 1967 | val = max - val; |
e9cf7049 | 1968 | mask = mask << shift; |
2b97eabc | 1969 | val = val << shift; |
2b97eabc | 1970 | |
fafd2176 SW |
1971 | if (val) |
1972 | /* new connection */ | |
1973 | connect = invert ? 0 : 1; | |
1974 | else | |
1975 | /* old connection must be powered down */ | |
1976 | connect = invert ? 1 : 0; | |
1977 | ||
1978 | mutex_lock(&codec->mutex); | |
2b97eabc | 1979 | |
e9cf7049 | 1980 | change = snd_soc_test_bits(widget->codec, reg, mask, val); |
97404f2e | 1981 | if (change) { |
fafd2176 SW |
1982 | for (wi = 0; wi < wlist->num_widgets; wi++) { |
1983 | widget = wlist->widgets[wi]; | |
283375ce | 1984 | |
fafd2176 | 1985 | widget->value = val; |
97404f2e | 1986 | |
fafd2176 SW |
1987 | update.kcontrol = kcontrol; |
1988 | update.widget = widget; | |
1989 | update.reg = reg; | |
1990 | update.mask = mask; | |
1991 | update.val = val; | |
1992 | widget->dapm->update = &update; | |
97404f2e | 1993 | |
fafd2176 SW |
1994 | dapm_mixer_update_power(widget, kcontrol, connect); |
1995 | ||
1996 | widget->dapm->update = NULL; | |
1997 | } | |
283375ce MB |
1998 | } |
1999 | ||
fafd2176 | 2000 | mutex_unlock(&codec->mutex); |
97404f2e | 2001 | return 0; |
2b97eabc RP |
2002 | } |
2003 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw); | |
2004 | ||
2005 | /** | |
2006 | * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback | |
2007 | * @kcontrol: mixer control | |
ac11a2b3 | 2008 | * @ucontrol: control element information |
2b97eabc RP |
2009 | * |
2010 | * Callback to get the value of a dapm enumerated double mixer control. | |
2011 | * | |
2012 | * Returns 0 for success. | |
2013 | */ | |
2014 | int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol, | |
2015 | struct snd_ctl_elem_value *ucontrol) | |
2016 | { | |
fafd2176 SW |
2017 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2018 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2b97eabc | 2019 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f | 2020 | unsigned int val, bitmask; |
2b97eabc | 2021 | |
f8ba0b7b | 2022 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
2023 | ; |
2024 | val = snd_soc_read(widget->codec, e->reg); | |
2025 | ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1); | |
2026 | if (e->shift_l != e->shift_r) | |
2027 | ucontrol->value.enumerated.item[1] = | |
2028 | (val >> e->shift_r) & (bitmask - 1); | |
2029 | ||
2030 | return 0; | |
2031 | } | |
2032 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double); | |
2033 | ||
2034 | /** | |
2035 | * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback | |
2036 | * @kcontrol: mixer control | |
ac11a2b3 | 2037 | * @ucontrol: control element information |
2b97eabc RP |
2038 | * |
2039 | * Callback to set the value of a dapm enumerated double mixer control. | |
2040 | * | |
2041 | * Returns 0 for success. | |
2042 | */ | |
2043 | int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, | |
2044 | struct snd_ctl_elem_value *ucontrol) | |
2045 | { | |
fafd2176 SW |
2046 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2047 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2048 | struct snd_soc_codec *codec = widget->codec; | |
2b97eabc | 2049 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
3a65577d | 2050 | unsigned int val, mux, change; |
46f5822f | 2051 | unsigned int mask, bitmask; |
97404f2e | 2052 | struct snd_soc_dapm_update update; |
fafd2176 | 2053 | int wi; |
2b97eabc | 2054 | |
f8ba0b7b | 2055 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc | 2056 | ; |
f8ba0b7b | 2057 | if (ucontrol->value.enumerated.item[0] > e->max - 1) |
2b97eabc RP |
2058 | return -EINVAL; |
2059 | mux = ucontrol->value.enumerated.item[0]; | |
2060 | val = mux << e->shift_l; | |
2061 | mask = (bitmask - 1) << e->shift_l; | |
2062 | if (e->shift_l != e->shift_r) { | |
f8ba0b7b | 2063 | if (ucontrol->value.enumerated.item[1] > e->max - 1) |
2b97eabc RP |
2064 | return -EINVAL; |
2065 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
2066 | mask |= (bitmask - 1) << e->shift_r; | |
2067 | } | |
2068 | ||
fafd2176 SW |
2069 | mutex_lock(&codec->mutex); |
2070 | ||
3a65577d | 2071 | change = snd_soc_test_bits(widget->codec, e->reg, mask, val); |
fafd2176 SW |
2072 | if (change) { |
2073 | for (wi = 0; wi < wlist->num_widgets; wi++) { | |
2074 | widget = wlist->widgets[wi]; | |
2075 | ||
2076 | widget->value = val; | |
1642e3d4 | 2077 | |
fafd2176 SW |
2078 | update.kcontrol = kcontrol; |
2079 | update.widget = widget; | |
2080 | update.reg = e->reg; | |
2081 | update.mask = mask; | |
2082 | update.val = val; | |
2083 | widget->dapm->update = &update; | |
1642e3d4 | 2084 | |
fafd2176 | 2085 | dapm_mux_update_power(widget, kcontrol, change, mux, e); |
1642e3d4 | 2086 | |
fafd2176 SW |
2087 | widget->dapm->update = NULL; |
2088 | } | |
2089 | } | |
2b97eabc | 2090 | |
fafd2176 | 2091 | mutex_unlock(&codec->mutex); |
97404f2e | 2092 | return change; |
2b97eabc RP |
2093 | } |
2094 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double); | |
2095 | ||
d2b247a8 MB |
2096 | /** |
2097 | * snd_soc_dapm_get_enum_virt - Get virtual DAPM mux | |
2098 | * @kcontrol: mixer control | |
2099 | * @ucontrol: control element information | |
2100 | * | |
2101 | * Returns 0 for success. | |
2102 | */ | |
2103 | int snd_soc_dapm_get_enum_virt(struct snd_kcontrol *kcontrol, | |
2104 | struct snd_ctl_elem_value *ucontrol) | |
2105 | { | |
fafd2176 SW |
2106 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2107 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
d2b247a8 MB |
2108 | |
2109 | ucontrol->value.enumerated.item[0] = widget->value; | |
2110 | ||
2111 | return 0; | |
2112 | } | |
2113 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_virt); | |
2114 | ||
2115 | /** | |
2116 | * snd_soc_dapm_put_enum_virt - Set virtual DAPM mux | |
2117 | * @kcontrol: mixer control | |
2118 | * @ucontrol: control element information | |
2119 | * | |
2120 | * Returns 0 for success. | |
2121 | */ | |
2122 | int snd_soc_dapm_put_enum_virt(struct snd_kcontrol *kcontrol, | |
2123 | struct snd_ctl_elem_value *ucontrol) | |
2124 | { | |
fafd2176 SW |
2125 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2126 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2127 | struct snd_soc_codec *codec = widget->codec; | |
d2b247a8 MB |
2128 | struct soc_enum *e = |
2129 | (struct soc_enum *)kcontrol->private_value; | |
2130 | int change; | |
2131 | int ret = 0; | |
fafd2176 | 2132 | int wi; |
d2b247a8 MB |
2133 | |
2134 | if (ucontrol->value.enumerated.item[0] >= e->max) | |
2135 | return -EINVAL; | |
2136 | ||
fafd2176 | 2137 | mutex_lock(&codec->mutex); |
d2b247a8 MB |
2138 | |
2139 | change = widget->value != ucontrol->value.enumerated.item[0]; | |
fafd2176 SW |
2140 | if (change) { |
2141 | for (wi = 0; wi < wlist->num_widgets; wi++) { | |
2142 | widget = wlist->widgets[wi]; | |
2143 | ||
2144 | widget->value = ucontrol->value.enumerated.item[0]; | |
2145 | ||
2146 | dapm_mux_update_power(widget, kcontrol, change, | |
2147 | widget->value, e); | |
2148 | } | |
2149 | } | |
d2b247a8 | 2150 | |
fafd2176 | 2151 | mutex_unlock(&codec->mutex); |
d2b247a8 MB |
2152 | return ret; |
2153 | } | |
2154 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt); | |
2155 | ||
2e72f8e3 PU |
2156 | /** |
2157 | * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get | |
2158 | * callback | |
2159 | * @kcontrol: mixer control | |
2160 | * @ucontrol: control element information | |
2161 | * | |
2162 | * Callback to get the value of a dapm semi enumerated double mixer control. | |
2163 | * | |
2164 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
2165 | * used for handling bitfield coded enumeration for example. | |
2166 | * | |
2167 | * Returns 0 for success. | |
2168 | */ | |
2169 | int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol *kcontrol, | |
2170 | struct snd_ctl_elem_value *ucontrol) | |
2171 | { | |
fafd2176 SW |
2172 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2173 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
74155556 | 2174 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f | 2175 | unsigned int reg_val, val, mux; |
2e72f8e3 PU |
2176 | |
2177 | reg_val = snd_soc_read(widget->codec, e->reg); | |
2178 | val = (reg_val >> e->shift_l) & e->mask; | |
2179 | for (mux = 0; mux < e->max; mux++) { | |
2180 | if (val == e->values[mux]) | |
2181 | break; | |
2182 | } | |
2183 | ucontrol->value.enumerated.item[0] = mux; | |
2184 | if (e->shift_l != e->shift_r) { | |
2185 | val = (reg_val >> e->shift_r) & e->mask; | |
2186 | for (mux = 0; mux < e->max; mux++) { | |
2187 | if (val == e->values[mux]) | |
2188 | break; | |
2189 | } | |
2190 | ucontrol->value.enumerated.item[1] = mux; | |
2191 | } | |
2192 | ||
2193 | return 0; | |
2194 | } | |
2195 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double); | |
2196 | ||
2197 | /** | |
2198 | * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set | |
2199 | * callback | |
2200 | * @kcontrol: mixer control | |
2201 | * @ucontrol: control element information | |
2202 | * | |
2203 | * Callback to set the value of a dapm semi enumerated double mixer control. | |
2204 | * | |
2205 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
2206 | * used for handling bitfield coded enumeration for example. | |
2207 | * | |
2208 | * Returns 0 for success. | |
2209 | */ | |
2210 | int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol, | |
2211 | struct snd_ctl_elem_value *ucontrol) | |
2212 | { | |
fafd2176 SW |
2213 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2214 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2215 | struct snd_soc_codec *codec = widget->codec; | |
74155556 | 2216 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
3a65577d | 2217 | unsigned int val, mux, change; |
46f5822f | 2218 | unsigned int mask; |
97404f2e | 2219 | struct snd_soc_dapm_update update; |
fafd2176 | 2220 | int wi; |
2e72f8e3 PU |
2221 | |
2222 | if (ucontrol->value.enumerated.item[0] > e->max - 1) | |
2223 | return -EINVAL; | |
2224 | mux = ucontrol->value.enumerated.item[0]; | |
2225 | val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l; | |
2226 | mask = e->mask << e->shift_l; | |
2227 | if (e->shift_l != e->shift_r) { | |
2228 | if (ucontrol->value.enumerated.item[1] > e->max - 1) | |
2229 | return -EINVAL; | |
2230 | val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r; | |
2231 | mask |= e->mask << e->shift_r; | |
2232 | } | |
2233 | ||
fafd2176 SW |
2234 | mutex_lock(&codec->mutex); |
2235 | ||
3a65577d | 2236 | change = snd_soc_test_bits(widget->codec, e->reg, mask, val); |
fafd2176 SW |
2237 | if (change) { |
2238 | for (wi = 0; wi < wlist->num_widgets; wi++) { | |
2239 | widget = wlist->widgets[wi]; | |
1642e3d4 | 2240 | |
fafd2176 | 2241 | widget->value = val; |
1642e3d4 | 2242 | |
fafd2176 SW |
2243 | update.kcontrol = kcontrol; |
2244 | update.widget = widget; | |
2245 | update.reg = e->reg; | |
2246 | update.mask = mask; | |
2247 | update.val = val; | |
2248 | widget->dapm->update = &update; | |
1642e3d4 | 2249 | |
fafd2176 SW |
2250 | dapm_mux_update_power(widget, kcontrol, change, mux, e); |
2251 | ||
2252 | widget->dapm->update = NULL; | |
2253 | } | |
2254 | } | |
2e72f8e3 | 2255 | |
fafd2176 | 2256 | mutex_unlock(&codec->mutex); |
97404f2e | 2257 | return change; |
2e72f8e3 PU |
2258 | } |
2259 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double); | |
2260 | ||
8b37dbd2 MB |
2261 | /** |
2262 | * snd_soc_dapm_info_pin_switch - Info for a pin switch | |
2263 | * | |
2264 | * @kcontrol: mixer control | |
2265 | * @uinfo: control element information | |
2266 | * | |
2267 | * Callback to provide information about a pin switch control. | |
2268 | */ | |
2269 | int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol, | |
2270 | struct snd_ctl_elem_info *uinfo) | |
2271 | { | |
2272 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
2273 | uinfo->count = 1; | |
2274 | uinfo->value.integer.min = 0; | |
2275 | uinfo->value.integer.max = 1; | |
2276 | ||
2277 | return 0; | |
2278 | } | |
2279 | EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch); | |
2280 | ||
2281 | /** | |
2282 | * snd_soc_dapm_get_pin_switch - Get information for a pin switch | |
2283 | * | |
2284 | * @kcontrol: mixer control | |
2285 | * @ucontrol: Value | |
2286 | */ | |
2287 | int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol, | |
2288 | struct snd_ctl_elem_value *ucontrol) | |
2289 | { | |
2290 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
2291 | const char *pin = (const char *)kcontrol->private_value; | |
2292 | ||
2293 | mutex_lock(&codec->mutex); | |
2294 | ||
2295 | ucontrol->value.integer.value[0] = | |
ce6120cc | 2296 | snd_soc_dapm_get_pin_status(&codec->dapm, pin); |
8b37dbd2 MB |
2297 | |
2298 | mutex_unlock(&codec->mutex); | |
2299 | ||
2300 | return 0; | |
2301 | } | |
2302 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch); | |
2303 | ||
2304 | /** | |
2305 | * snd_soc_dapm_put_pin_switch - Set information for a pin switch | |
2306 | * | |
2307 | * @kcontrol: mixer control | |
2308 | * @ucontrol: Value | |
2309 | */ | |
2310 | int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol, | |
2311 | struct snd_ctl_elem_value *ucontrol) | |
2312 | { | |
2313 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
2314 | const char *pin = (const char *)kcontrol->private_value; | |
2315 | ||
2316 | mutex_lock(&codec->mutex); | |
2317 | ||
2318 | if (ucontrol->value.integer.value[0]) | |
ce6120cc | 2319 | snd_soc_dapm_enable_pin(&codec->dapm, pin); |
8b37dbd2 | 2320 | else |
ce6120cc | 2321 | snd_soc_dapm_disable_pin(&codec->dapm, pin); |
8b37dbd2 | 2322 | |
ce6120cc | 2323 | snd_soc_dapm_sync(&codec->dapm); |
8b37dbd2 MB |
2324 | |
2325 | mutex_unlock(&codec->mutex); | |
2326 | ||
2327 | return 0; | |
2328 | } | |
2329 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch); | |
2330 | ||
2b97eabc RP |
2331 | /** |
2332 | * snd_soc_dapm_new_control - create new dapm control | |
ce6120cc | 2333 | * @dapm: DAPM context |
2b97eabc RP |
2334 | * @widget: widget template |
2335 | * | |
2336 | * Creates a new dapm control based upon the template. | |
2337 | * | |
2338 | * Returns 0 for success else error. | |
2339 | */ | |
ce6120cc | 2340 | int snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
2341 | const struct snd_soc_dapm_widget *widget) |
2342 | { | |
2343 | struct snd_soc_dapm_widget *w; | |
ead9b919 | 2344 | size_t name_len; |
2b97eabc RP |
2345 | |
2346 | if ((w = dapm_cnew_widget(widget)) == NULL) | |
2347 | return -ENOMEM; | |
2348 | ||
ead9b919 | 2349 | name_len = strlen(widget->name) + 1; |
88e8b9a8 | 2350 | if (dapm->codec && dapm->codec->name_prefix) |
ead9b919 JN |
2351 | name_len += 1 + strlen(dapm->codec->name_prefix); |
2352 | w->name = kmalloc(name_len, GFP_KERNEL); | |
2353 | if (w->name == NULL) { | |
2354 | kfree(w); | |
2355 | return -ENOMEM; | |
2356 | } | |
88e8b9a8 | 2357 | if (dapm->codec && dapm->codec->name_prefix) |
ead9b919 JN |
2358 | snprintf(w->name, name_len, "%s %s", |
2359 | dapm->codec->name_prefix, widget->name); | |
2360 | else | |
2361 | snprintf(w->name, name_len, "%s", widget->name); | |
2362 | ||
97c866de | 2363 | dapm->n_widgets++; |
ce6120cc LG |
2364 | w->dapm = dapm; |
2365 | w->codec = dapm->codec; | |
2b97eabc RP |
2366 | INIT_LIST_HEAD(&w->sources); |
2367 | INIT_LIST_HEAD(&w->sinks); | |
2368 | INIT_LIST_HEAD(&w->list); | |
97c866de | 2369 | list_add(&w->list, &dapm->card->widgets); |
2b97eabc RP |
2370 | |
2371 | /* machine layer set ups unconnected pins and insertions */ | |
2372 | w->connected = 1; | |
2373 | return 0; | |
2374 | } | |
2375 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control); | |
2376 | ||
4ba1327a MB |
2377 | /** |
2378 | * snd_soc_dapm_new_controls - create new dapm controls | |
ce6120cc | 2379 | * @dapm: DAPM context |
4ba1327a MB |
2380 | * @widget: widget array |
2381 | * @num: number of widgets | |
2382 | * | |
2383 | * Creates new DAPM controls based upon the templates. | |
2384 | * | |
2385 | * Returns 0 for success else error. | |
2386 | */ | |
ce6120cc | 2387 | int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm, |
4ba1327a MB |
2388 | const struct snd_soc_dapm_widget *widget, |
2389 | int num) | |
2390 | { | |
2391 | int i, ret; | |
2392 | ||
2393 | for (i = 0; i < num; i++) { | |
ce6120cc | 2394 | ret = snd_soc_dapm_new_control(dapm, widget); |
b8b33cb5 | 2395 | if (ret < 0) { |
f7d41ae8 JN |
2396 | dev_err(dapm->dev, |
2397 | "ASoC: Failed to create DAPM control %s: %d\n", | |
2398 | widget->name, ret); | |
4ba1327a | 2399 | return ret; |
b8b33cb5 | 2400 | } |
4ba1327a MB |
2401 | widget++; |
2402 | } | |
2403 | return 0; | |
2404 | } | |
2405 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls); | |
2406 | ||
ce6120cc | 2407 | static void soc_dapm_stream_event(struct snd_soc_dapm_context *dapm, |
f0fba2ad | 2408 | const char *stream, int event) |
2b97eabc RP |
2409 | { |
2410 | struct snd_soc_dapm_widget *w; | |
2411 | ||
97c866de | 2412 | list_for_each_entry(w, &dapm->card->widgets, list) |
2b97eabc | 2413 | { |
97c866de | 2414 | if (!w->sname || w->dapm != dapm) |
2b97eabc | 2415 | continue; |
f7d41ae8 JN |
2416 | dev_dbg(w->dapm->dev, "widget %s\n %s stream %s event %d\n", |
2417 | w->name, w->sname, stream, event); | |
2b97eabc RP |
2418 | if (strstr(w->sname, stream)) { |
2419 | switch(event) { | |
2420 | case SND_SOC_DAPM_STREAM_START: | |
2421 | w->active = 1; | |
2422 | break; | |
2423 | case SND_SOC_DAPM_STREAM_STOP: | |
2424 | w->active = 0; | |
2425 | break; | |
2426 | case SND_SOC_DAPM_STREAM_SUSPEND: | |
2b97eabc | 2427 | case SND_SOC_DAPM_STREAM_RESUME: |
2b97eabc | 2428 | case SND_SOC_DAPM_STREAM_PAUSE_PUSH: |
2b97eabc RP |
2429 | case SND_SOC_DAPM_STREAM_PAUSE_RELEASE: |
2430 | break; | |
2431 | } | |
2432 | } | |
2433 | } | |
2b97eabc | 2434 | |
ce6120cc LG |
2435 | dapm_power_widgets(dapm, event); |
2436 | } | |
2437 | ||
2438 | /** | |
2439 | * snd_soc_dapm_stream_event - send a stream event to the dapm core | |
2440 | * @rtd: PCM runtime data | |
2441 | * @stream: stream name | |
2442 | * @event: stream event | |
2443 | * | |
2444 | * Sends a stream event to the dapm core. The core then makes any | |
2445 | * necessary widget power changes. | |
2446 | * | |
2447 | * Returns 0 for success else error. | |
2448 | */ | |
2449 | int snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, | |
2450 | const char *stream, int event) | |
2451 | { | |
2452 | struct snd_soc_codec *codec = rtd->codec; | |
2453 | ||
2454 | if (stream == NULL) | |
2455 | return 0; | |
2456 | ||
2457 | mutex_lock(&codec->mutex); | |
2458 | soc_dapm_stream_event(&codec->dapm, stream, event); | |
8e8b2d67 | 2459 | mutex_unlock(&codec->mutex); |
2b97eabc RP |
2460 | return 0; |
2461 | } | |
2b97eabc RP |
2462 | |
2463 | /** | |
a5302181 | 2464 | * snd_soc_dapm_enable_pin - enable pin. |
ce6120cc | 2465 | * @dapm: DAPM context |
a5302181 | 2466 | * @pin: pin name |
2b97eabc | 2467 | * |
74b8f955 | 2468 | * Enables input/output pin and its parents or children widgets iff there is |
a5302181 LG |
2469 | * a valid audio route and active audio stream. |
2470 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2471 | * do any widget power switching. | |
2b97eabc | 2472 | */ |
ce6120cc | 2473 | int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin) |
2b97eabc | 2474 | { |
ce6120cc | 2475 | return snd_soc_dapm_set_pin(dapm, pin, 1); |
a5302181 LG |
2476 | } |
2477 | EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin); | |
2b97eabc | 2478 | |
da34183e MB |
2479 | /** |
2480 | * snd_soc_dapm_force_enable_pin - force a pin to be enabled | |
ce6120cc | 2481 | * @dapm: DAPM context |
da34183e MB |
2482 | * @pin: pin name |
2483 | * | |
2484 | * Enables input/output pin regardless of any other state. This is | |
2485 | * intended for use with microphone bias supplies used in microphone | |
2486 | * jack detection. | |
2487 | * | |
2488 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2489 | * do any widget power switching. | |
2490 | */ | |
ce6120cc LG |
2491 | int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm, |
2492 | const char *pin) | |
da34183e | 2493 | { |
91a5fca4 | 2494 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); |
da34183e | 2495 | |
91a5fca4 LPC |
2496 | if (!w) { |
2497 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); | |
2498 | return -EINVAL; | |
0d86733c MB |
2499 | } |
2500 | ||
91a5fca4 LPC |
2501 | dev_dbg(w->dapm->dev, "dapm: force enable pin %s\n", pin); |
2502 | w->connected = 1; | |
2503 | w->force = 1; | |
da34183e | 2504 | |
91a5fca4 | 2505 | return 0; |
da34183e MB |
2506 | } |
2507 | EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin); | |
2508 | ||
a5302181 LG |
2509 | /** |
2510 | * snd_soc_dapm_disable_pin - disable pin. | |
ce6120cc | 2511 | * @dapm: DAPM context |
a5302181 LG |
2512 | * @pin: pin name |
2513 | * | |
74b8f955 | 2514 | * Disables input/output pin and its parents or children widgets. |
a5302181 LG |
2515 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to |
2516 | * do any widget power switching. | |
2517 | */ | |
ce6120cc LG |
2518 | int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm, |
2519 | const char *pin) | |
a5302181 | 2520 | { |
ce6120cc | 2521 | return snd_soc_dapm_set_pin(dapm, pin, 0); |
2b97eabc | 2522 | } |
a5302181 | 2523 | EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin); |
2b97eabc | 2524 | |
5817b52a MB |
2525 | /** |
2526 | * snd_soc_dapm_nc_pin - permanently disable pin. | |
ce6120cc | 2527 | * @dapm: DAPM context |
5817b52a MB |
2528 | * @pin: pin name |
2529 | * | |
2530 | * Marks the specified pin as being not connected, disabling it along | |
2531 | * any parent or child widgets. At present this is identical to | |
2532 | * snd_soc_dapm_disable_pin() but in future it will be extended to do | |
2533 | * additional things such as disabling controls which only affect | |
2534 | * paths through the pin. | |
2535 | * | |
2536 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2537 | * do any widget power switching. | |
2538 | */ | |
ce6120cc | 2539 | int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin) |
5817b52a | 2540 | { |
ce6120cc | 2541 | return snd_soc_dapm_set_pin(dapm, pin, 0); |
5817b52a MB |
2542 | } |
2543 | EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin); | |
2544 | ||
eeec12bf | 2545 | /** |
a5302181 | 2546 | * snd_soc_dapm_get_pin_status - get audio pin status |
ce6120cc | 2547 | * @dapm: DAPM context |
a5302181 | 2548 | * @pin: audio signal pin endpoint (or start point) |
eeec12bf | 2549 | * |
a5302181 | 2550 | * Get audio pin status - connected or disconnected. |
eeec12bf | 2551 | * |
a5302181 | 2552 | * Returns 1 for connected otherwise 0. |
eeec12bf | 2553 | */ |
ce6120cc LG |
2554 | int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm, |
2555 | const char *pin) | |
eeec12bf | 2556 | { |
91a5fca4 | 2557 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); |
eeec12bf | 2558 | |
91a5fca4 LPC |
2559 | if (w) |
2560 | return w->connected; | |
a68b38ad | 2561 | |
eeec12bf GG |
2562 | return 0; |
2563 | } | |
a5302181 | 2564 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status); |
eeec12bf | 2565 | |
1547aba9 MB |
2566 | /** |
2567 | * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint | |
ce6120cc | 2568 | * @dapm: DAPM context |
1547aba9 MB |
2569 | * @pin: audio signal pin endpoint (or start point) |
2570 | * | |
2571 | * Mark the given endpoint or pin as ignoring suspend. When the | |
2572 | * system is disabled a path between two endpoints flagged as ignoring | |
2573 | * suspend will not be disabled. The path must already be enabled via | |
2574 | * normal means at suspend time, it will not be turned on if it was not | |
2575 | * already enabled. | |
2576 | */ | |
ce6120cc LG |
2577 | int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm, |
2578 | const char *pin) | |
1547aba9 | 2579 | { |
91a5fca4 | 2580 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, false); |
1547aba9 | 2581 | |
91a5fca4 LPC |
2582 | if (!w) { |
2583 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); | |
2584 | return -EINVAL; | |
1547aba9 MB |
2585 | } |
2586 | ||
91a5fca4 LPC |
2587 | w->ignore_suspend = 1; |
2588 | ||
2589 | return 0; | |
1547aba9 MB |
2590 | } |
2591 | EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend); | |
2592 | ||
2b97eabc RP |
2593 | /** |
2594 | * snd_soc_dapm_free - free dapm resources | |
f0fba2ad | 2595 | * @card: SoC device |
2b97eabc RP |
2596 | * |
2597 | * Free all dapm widgets and resources. | |
2598 | */ | |
ce6120cc | 2599 | void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm) |
2b97eabc | 2600 | { |
ce6120cc | 2601 | snd_soc_dapm_sys_remove(dapm->dev); |
6c45e126 | 2602 | dapm_debugfs_cleanup(dapm); |
ce6120cc | 2603 | dapm_free_widgets(dapm); |
7be31be8 | 2604 | list_del(&dapm->list); |
2b97eabc RP |
2605 | } |
2606 | EXPORT_SYMBOL_GPL(snd_soc_dapm_free); | |
2607 | ||
ce6120cc | 2608 | static void soc_dapm_shutdown_codec(struct snd_soc_dapm_context *dapm) |
51737470 | 2609 | { |
51737470 MB |
2610 | struct snd_soc_dapm_widget *w; |
2611 | LIST_HEAD(down_list); | |
2612 | int powerdown = 0; | |
2613 | ||
97c866de JN |
2614 | list_for_each_entry(w, &dapm->card->widgets, list) { |
2615 | if (w->dapm != dapm) | |
2616 | continue; | |
51737470 | 2617 | if (w->power) { |
828a842f | 2618 | dapm_seq_insert(w, &down_list, false); |
c2caa4da | 2619 | w->power = 0; |
51737470 MB |
2620 | powerdown = 1; |
2621 | } | |
2622 | } | |
2623 | ||
2624 | /* If there were no widgets to power down we're already in | |
2625 | * standby. | |
2626 | */ | |
2627 | if (powerdown) { | |
ed5a4c47 | 2628 | snd_soc_dapm_set_bias_level(dapm, SND_SOC_BIAS_PREPARE); |
828a842f | 2629 | dapm_seq_run(dapm, &down_list, 0, false); |
ed5a4c47 | 2630 | snd_soc_dapm_set_bias_level(dapm, SND_SOC_BIAS_STANDBY); |
51737470 | 2631 | } |
f0fba2ad LG |
2632 | } |
2633 | ||
2634 | /* | |
2635 | * snd_soc_dapm_shutdown - callback for system shutdown | |
2636 | */ | |
2637 | void snd_soc_dapm_shutdown(struct snd_soc_card *card) | |
2638 | { | |
2639 | struct snd_soc_codec *codec; | |
2640 | ||
ce6120cc LG |
2641 | list_for_each_entry(codec, &card->codec_dev_list, list) { |
2642 | soc_dapm_shutdown_codec(&codec->dapm); | |
ed5a4c47 | 2643 | snd_soc_dapm_set_bias_level(&codec->dapm, SND_SOC_BIAS_OFF); |
ce6120cc | 2644 | } |
51737470 MB |
2645 | } |
2646 | ||
2b97eabc | 2647 | /* Module information */ |
d331124d | 2648 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
2b97eabc RP |
2649 | MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC"); |
2650 | MODULE_LICENSE("GPL"); |