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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 | ||
f83fba8b MB |
142 | switch (level) { |
143 | case SND_SOC_BIAS_ON: | |
ce6120cc | 144 | dev_dbg(dapm->dev, "Setting full bias\n"); |
f83fba8b MB |
145 | break; |
146 | case SND_SOC_BIAS_PREPARE: | |
ce6120cc | 147 | dev_dbg(dapm->dev, "Setting bias prepare\n"); |
f83fba8b MB |
148 | break; |
149 | case SND_SOC_BIAS_STANDBY: | |
ce6120cc | 150 | dev_dbg(dapm->dev, "Setting standby bias\n"); |
f83fba8b MB |
151 | break; |
152 | case SND_SOC_BIAS_OFF: | |
ce6120cc | 153 | dev_dbg(dapm->dev, "Setting bias off\n"); |
f83fba8b MB |
154 | break; |
155 | default: | |
ce6120cc | 156 | dev_err(dapm->dev, "Setting invalid bias %d\n", level); |
f83fba8b MB |
157 | return -EINVAL; |
158 | } | |
159 | ||
84e90930 MB |
160 | trace_snd_soc_bias_level_start(card, level); |
161 | ||
f0fba2ad | 162 | if (card && card->set_bias_level) |
452c5eaa | 163 | ret = card->set_bias_level(card, level); |
474e09ca | 164 | if (ret == 0) { |
ce6120cc LG |
165 | if (dapm->codec && dapm->codec->driver->set_bias_level) |
166 | ret = dapm->codec->driver->set_bias_level(dapm->codec, level); | |
474e09ca | 167 | else |
ce6120cc | 168 | dapm->bias_level = level; |
474e09ca | 169 | } |
1badabd9 MB |
170 | if (ret == 0) { |
171 | if (card && card->set_bias_level_post) | |
172 | ret = card->set_bias_level_post(card, level); | |
173 | } | |
452c5eaa | 174 | |
84e90930 MB |
175 | trace_snd_soc_bias_level_done(card, level); |
176 | ||
452c5eaa MB |
177 | return ret; |
178 | } | |
179 | ||
2b97eabc RP |
180 | /* set up initial codec paths */ |
181 | static void dapm_set_path_status(struct snd_soc_dapm_widget *w, | |
182 | struct snd_soc_dapm_path *p, int i) | |
183 | { | |
184 | switch (w->id) { | |
185 | case snd_soc_dapm_switch: | |
ca9c1aae IM |
186 | case snd_soc_dapm_mixer: |
187 | case snd_soc_dapm_mixer_named_ctl: { | |
2b97eabc | 188 | int val; |
4eaa9819 JS |
189 | struct soc_mixer_control *mc = (struct soc_mixer_control *) |
190 | w->kcontrols[i].private_value; | |
815ecf8d JS |
191 | unsigned int reg = mc->reg; |
192 | unsigned int shift = mc->shift; | |
4eaa9819 | 193 | int max = mc->max; |
815ecf8d JS |
194 | unsigned int mask = (1 << fls(max)) - 1; |
195 | unsigned int invert = mc->invert; | |
2b97eabc RP |
196 | |
197 | val = snd_soc_read(w->codec, reg); | |
198 | val = (val >> shift) & mask; | |
199 | ||
200 | if ((invert && !val) || (!invert && val)) | |
201 | p->connect = 1; | |
202 | else | |
203 | p->connect = 0; | |
204 | } | |
205 | break; | |
206 | case snd_soc_dapm_mux: { | |
207 | struct soc_enum *e = (struct soc_enum *)w->kcontrols[i].private_value; | |
208 | int val, item, bitmask; | |
209 | ||
f8ba0b7b | 210 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
211 | ; |
212 | val = snd_soc_read(w->codec, e->reg); | |
213 | item = (val >> e->shift_l) & (bitmask - 1); | |
214 | ||
215 | p->connect = 0; | |
f8ba0b7b | 216 | for (i = 0; i < e->max; i++) { |
2b97eabc RP |
217 | if (!(strcmp(p->name, e->texts[i])) && item == i) |
218 | p->connect = 1; | |
219 | } | |
220 | } | |
221 | break; | |
24ff33ac DP |
222 | case snd_soc_dapm_virt_mux: { |
223 | struct soc_enum *e = (struct soc_enum *)w->kcontrols[i].private_value; | |
224 | ||
225 | p->connect = 0; | |
226 | /* since a virtual mux has no backing registers to | |
227 | * decide which path to connect, it will try to match | |
228 | * with the first enumeration. This is to ensure | |
229 | * that the default mux choice (the first) will be | |
230 | * correctly powered up during initialization. | |
231 | */ | |
232 | if (!strcmp(p->name, e->texts[0])) | |
233 | p->connect = 1; | |
234 | } | |
235 | break; | |
2e72f8e3 | 236 | case snd_soc_dapm_value_mux: { |
74155556 | 237 | struct soc_enum *e = (struct soc_enum *) |
2e72f8e3 PU |
238 | w->kcontrols[i].private_value; |
239 | int val, item; | |
240 | ||
241 | val = snd_soc_read(w->codec, e->reg); | |
242 | val = (val >> e->shift_l) & e->mask; | |
243 | for (item = 0; item < e->max; item++) { | |
244 | if (val == e->values[item]) | |
245 | break; | |
246 | } | |
247 | ||
248 | p->connect = 0; | |
249 | for (i = 0; i < e->max; i++) { | |
250 | if (!(strcmp(p->name, e->texts[i])) && item == i) | |
251 | p->connect = 1; | |
252 | } | |
253 | } | |
254 | break; | |
2b97eabc RP |
255 | /* does not effect routing - always connected */ |
256 | case snd_soc_dapm_pga: | |
d88429a6 | 257 | case snd_soc_dapm_out_drv: |
2b97eabc RP |
258 | case snd_soc_dapm_output: |
259 | case snd_soc_dapm_adc: | |
260 | case snd_soc_dapm_input: | |
261 | case snd_soc_dapm_dac: | |
262 | case snd_soc_dapm_micbias: | |
263 | case snd_soc_dapm_vmid: | |
246d0a17 | 264 | case snd_soc_dapm_supply: |
010ff262 MB |
265 | case snd_soc_dapm_aif_in: |
266 | case snd_soc_dapm_aif_out: | |
2b97eabc RP |
267 | p->connect = 1; |
268 | break; | |
269 | /* does effect routing - dynamically connected */ | |
270 | case snd_soc_dapm_hp: | |
271 | case snd_soc_dapm_mic: | |
272 | case snd_soc_dapm_spk: | |
273 | case snd_soc_dapm_line: | |
274 | case snd_soc_dapm_pre: | |
275 | case snd_soc_dapm_post: | |
276 | p->connect = 0; | |
277 | break; | |
278 | } | |
279 | } | |
280 | ||
74b8f955 | 281 | /* connect mux widget to its interconnecting audio paths */ |
ce6120cc | 282 | static int dapm_connect_mux(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
283 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, |
284 | struct snd_soc_dapm_path *path, const char *control_name, | |
285 | const struct snd_kcontrol_new *kcontrol) | |
286 | { | |
287 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
288 | int i; | |
289 | ||
f8ba0b7b | 290 | for (i = 0; i < e->max; i++) { |
2b97eabc | 291 | if (!(strcmp(control_name, e->texts[i]))) { |
8ddab3f5 | 292 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
293 | list_add(&path->list_sink, &dest->sources); |
294 | list_add(&path->list_source, &src->sinks); | |
295 | path->name = (char*)e->texts[i]; | |
296 | dapm_set_path_status(dest, path, 0); | |
297 | return 0; | |
298 | } | |
299 | } | |
300 | ||
301 | return -ENODEV; | |
302 | } | |
303 | ||
74b8f955 | 304 | /* connect mixer widget to its interconnecting audio paths */ |
ce6120cc | 305 | static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
306 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, |
307 | struct snd_soc_dapm_path *path, const char *control_name) | |
308 | { | |
309 | int i; | |
310 | ||
311 | /* search for mixer kcontrol */ | |
312 | for (i = 0; i < dest->num_kcontrols; i++) { | |
313 | if (!strcmp(control_name, dest->kcontrols[i].name)) { | |
8ddab3f5 | 314 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
315 | list_add(&path->list_sink, &dest->sources); |
316 | list_add(&path->list_source, &src->sinks); | |
317 | path->name = dest->kcontrols[i].name; | |
318 | dapm_set_path_status(dest, path, i); | |
319 | return 0; | |
320 | } | |
321 | } | |
322 | return -ENODEV; | |
323 | } | |
324 | ||
325 | /* update dapm codec register bits */ | |
326 | static int dapm_update_bits(struct snd_soc_dapm_widget *widget) | |
327 | { | |
328 | int change, power; | |
46f5822f | 329 | unsigned int old, new; |
2b97eabc | 330 | struct snd_soc_codec *codec = widget->codec; |
ce6120cc | 331 | struct snd_soc_dapm_context *dapm = widget->dapm; |
3a45b867 | 332 | struct snd_soc_card *card = dapm->card; |
2b97eabc RP |
333 | |
334 | /* check for valid widgets */ | |
335 | if (widget->reg < 0 || widget->id == snd_soc_dapm_input || | |
336 | widget->id == snd_soc_dapm_output || | |
337 | widget->id == snd_soc_dapm_hp || | |
338 | widget->id == snd_soc_dapm_mic || | |
339 | widget->id == snd_soc_dapm_line || | |
340 | widget->id == snd_soc_dapm_spk) | |
341 | return 0; | |
342 | ||
343 | power = widget->power; | |
344 | if (widget->invert) | |
345 | power = (power ? 0:1); | |
346 | ||
347 | old = snd_soc_read(codec, widget->reg); | |
348 | new = (old & ~(0x1 << widget->shift)) | (power << widget->shift); | |
349 | ||
350 | change = old != new; | |
351 | if (change) { | |
fd8d3bc0 JN |
352 | pop_dbg(dapm->dev, card->pop_time, |
353 | "pop test %s : %s in %d ms\n", | |
12ef193d | 354 | widget->name, widget->power ? "on" : "off", |
3a45b867 JN |
355 | card->pop_time); |
356 | pop_wait(card->pop_time); | |
69224719 | 357 | snd_soc_write(codec, widget->reg, new); |
2b97eabc | 358 | } |
f7d41ae8 JN |
359 | dev_dbg(dapm->dev, "reg %x old %x new %x change %d\n", widget->reg, |
360 | old, new, change); | |
2b97eabc RP |
361 | return change; |
362 | } | |
363 | ||
2b97eabc | 364 | /* create new dapm mixer control */ |
ce6120cc | 365 | static int dapm_new_mixer(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
366 | struct snd_soc_dapm_widget *w) |
367 | { | |
368 | int i, ret = 0; | |
3e5ff4df | 369 | size_t name_len, prefix_len; |
2b97eabc | 370 | struct snd_soc_dapm_path *path; |
12ea2c78 | 371 | struct snd_card *card = dapm->card->snd_card; |
efb7ac3f MB |
372 | const char *prefix; |
373 | ||
374 | if (dapm->codec) | |
375 | prefix = dapm->codec->name_prefix; | |
376 | else | |
377 | prefix = NULL; | |
2b97eabc | 378 | |
3e5ff4df MB |
379 | if (prefix) |
380 | prefix_len = strlen(prefix) + 1; | |
381 | else | |
382 | prefix_len = 0; | |
383 | ||
2b97eabc RP |
384 | /* add kcontrol */ |
385 | for (i = 0; i < w->num_kcontrols; i++) { | |
386 | ||
387 | /* match name */ | |
388 | list_for_each_entry(path, &w->sources, list_sink) { | |
389 | ||
390 | /* mixer/mux paths name must match control name */ | |
391 | if (path->name != (char*)w->kcontrols[i].name) | |
392 | continue; | |
393 | ||
ca9c1aae IM |
394 | /* add dapm control with long name. |
395 | * for dapm_mixer this is the concatenation of the | |
396 | * mixer and kcontrol name. | |
397 | * for dapm_mixer_named_ctl this is simply the | |
398 | * kcontrol name. | |
399 | */ | |
400 | name_len = strlen(w->kcontrols[i].name) + 1; | |
07495f3e | 401 | if (w->id != snd_soc_dapm_mixer_named_ctl) |
ca9c1aae IM |
402 | name_len += 1 + strlen(w->name); |
403 | ||
219b93f5 | 404 | path->long_name = kmalloc(name_len, GFP_KERNEL); |
ca9c1aae | 405 | |
2b97eabc RP |
406 | if (path->long_name == NULL) |
407 | return -ENOMEM; | |
408 | ||
ca9c1aae | 409 | switch (w->id) { |
ca9c1aae | 410 | default: |
3e5ff4df MB |
411 | /* The control will get a prefix from |
412 | * the control creation process but | |
413 | * we're also using the same prefix | |
414 | * for widgets so cut the prefix off | |
415 | * the front of the widget name. | |
416 | */ | |
ca9c1aae | 417 | snprintf(path->long_name, name_len, "%s %s", |
3e5ff4df MB |
418 | w->name + prefix_len, |
419 | w->kcontrols[i].name); | |
07495f3e | 420 | break; |
ca9c1aae IM |
421 | case snd_soc_dapm_mixer_named_ctl: |
422 | snprintf(path->long_name, name_len, "%s", | |
423 | w->kcontrols[i].name); | |
07495f3e | 424 | break; |
ca9c1aae IM |
425 | } |
426 | ||
219b93f5 MB |
427 | path->long_name[name_len - 1] = '\0'; |
428 | ||
2b97eabc | 429 | path->kcontrol = snd_soc_cnew(&w->kcontrols[i], w, |
efb7ac3f | 430 | path->long_name, prefix); |
ce6120cc | 431 | ret = snd_ctl_add(card, path->kcontrol); |
2b97eabc | 432 | if (ret < 0) { |
f7d41ae8 JN |
433 | dev_err(dapm->dev, |
434 | "asoc: failed to add dapm kcontrol %s: %d\n", | |
435 | path->long_name, ret); | |
2b97eabc RP |
436 | kfree(path->long_name); |
437 | path->long_name = NULL; | |
438 | return ret; | |
439 | } | |
440 | } | |
441 | } | |
442 | return ret; | |
443 | } | |
444 | ||
445 | /* create new dapm mux control */ | |
ce6120cc | 446 | static int dapm_new_mux(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
447 | struct snd_soc_dapm_widget *w) |
448 | { | |
449 | struct snd_soc_dapm_path *path = NULL; | |
450 | struct snd_kcontrol *kcontrol; | |
12ea2c78 | 451 | struct snd_card *card = dapm->card->snd_card; |
efb7ac3f | 452 | const char *prefix; |
3e5ff4df | 453 | size_t prefix_len; |
2b97eabc RP |
454 | int ret = 0; |
455 | ||
456 | if (!w->num_kcontrols) { | |
f7d41ae8 | 457 | dev_err(dapm->dev, "asoc: mux %s has no controls\n", w->name); |
2b97eabc RP |
458 | return -EINVAL; |
459 | } | |
460 | ||
efb7ac3f MB |
461 | if (dapm->codec) |
462 | prefix = dapm->codec->name_prefix; | |
463 | else | |
464 | prefix = NULL; | |
465 | ||
3e5ff4df MB |
466 | if (prefix) |
467 | prefix_len = strlen(prefix) + 1; | |
468 | else | |
469 | prefix_len = 0; | |
470 | ||
471 | /* The control will get a prefix from the control creation | |
472 | * process but we're also using the same prefix for widgets so | |
473 | * cut the prefix off the front of the widget name. | |
474 | */ | |
475 | kcontrol = snd_soc_cnew(&w->kcontrols[0], w, w->name + prefix_len, | |
476 | prefix); | |
ce6120cc LG |
477 | ret = snd_ctl_add(card, kcontrol); |
478 | ||
2b97eabc RP |
479 | if (ret < 0) |
480 | goto err; | |
481 | ||
482 | list_for_each_entry(path, &w->sources, list_sink) | |
483 | path->kcontrol = kcontrol; | |
484 | ||
485 | return ret; | |
486 | ||
487 | err: | |
f7d41ae8 | 488 | dev_err(dapm->dev, "asoc: failed to add kcontrol %s\n", w->name); |
2b97eabc RP |
489 | return ret; |
490 | } | |
491 | ||
492 | /* create new dapm volume control */ | |
ce6120cc | 493 | static int dapm_new_pga(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
494 | struct snd_soc_dapm_widget *w) |
495 | { | |
a6c65736 | 496 | if (w->num_kcontrols) |
f7d41ae8 JN |
497 | dev_err(w->dapm->dev, |
498 | "asoc: PGA controls not supported: '%s'\n", w->name); | |
2b97eabc | 499 | |
a6c65736 | 500 | return 0; |
2b97eabc RP |
501 | } |
502 | ||
503 | /* reset 'walked' bit for each dapm path */ | |
ce6120cc | 504 | static inline void dapm_clear_walk(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
505 | { |
506 | struct snd_soc_dapm_path *p; | |
507 | ||
8ddab3f5 | 508 | list_for_each_entry(p, &dapm->card->paths, list) |
2b97eabc RP |
509 | p->walked = 0; |
510 | } | |
511 | ||
9949788b MB |
512 | /* We implement power down on suspend by checking the power state of |
513 | * the ALSA card - when we are suspending the ALSA state for the card | |
514 | * is set to D3. | |
515 | */ | |
516 | static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget) | |
517 | { | |
12ea2c78 | 518 | int level = snd_power_get_state(widget->dapm->card->snd_card); |
9949788b | 519 | |
f0fba2ad | 520 | switch (level) { |
9949788b MB |
521 | case SNDRV_CTL_POWER_D3hot: |
522 | case SNDRV_CTL_POWER_D3cold: | |
1547aba9 | 523 | if (widget->ignore_suspend) |
f7d41ae8 JN |
524 | dev_dbg(widget->dapm->dev, "%s ignoring suspend\n", |
525 | widget->name); | |
1547aba9 | 526 | return widget->ignore_suspend; |
9949788b MB |
527 | default: |
528 | return 1; | |
529 | } | |
530 | } | |
531 | ||
2b97eabc RP |
532 | /* |
533 | * Recursively check for a completed path to an active or physically connected | |
534 | * output widget. Returns number of complete paths. | |
535 | */ | |
536 | static int is_connected_output_ep(struct snd_soc_dapm_widget *widget) | |
537 | { | |
538 | struct snd_soc_dapm_path *path; | |
539 | int con = 0; | |
540 | ||
246d0a17 MB |
541 | if (widget->id == snd_soc_dapm_supply) |
542 | return 0; | |
543 | ||
010ff262 MB |
544 | switch (widget->id) { |
545 | case snd_soc_dapm_adc: | |
546 | case snd_soc_dapm_aif_out: | |
547 | if (widget->active) | |
9949788b | 548 | return snd_soc_dapm_suspend_check(widget); |
010ff262 MB |
549 | default: |
550 | break; | |
551 | } | |
2b97eabc RP |
552 | |
553 | if (widget->connected) { | |
554 | /* connected pin ? */ | |
555 | if (widget->id == snd_soc_dapm_output && !widget->ext) | |
9949788b | 556 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
557 | |
558 | /* connected jack or spk ? */ | |
559 | if (widget->id == snd_soc_dapm_hp || widget->id == snd_soc_dapm_spk || | |
eaeae5d9 | 560 | (widget->id == snd_soc_dapm_line && !list_empty(&widget->sources))) |
9949788b | 561 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
562 | } |
563 | ||
564 | list_for_each_entry(path, &widget->sinks, list_source) { | |
565 | if (path->walked) | |
566 | continue; | |
567 | ||
568 | if (path->sink && path->connect) { | |
569 | path->walked = 1; | |
570 | con += is_connected_output_ep(path->sink); | |
571 | } | |
572 | } | |
573 | ||
574 | return con; | |
575 | } | |
576 | ||
577 | /* | |
578 | * Recursively check for a completed path to an active or physically connected | |
579 | * input widget. Returns number of complete paths. | |
580 | */ | |
581 | static int is_connected_input_ep(struct snd_soc_dapm_widget *widget) | |
582 | { | |
583 | struct snd_soc_dapm_path *path; | |
584 | int con = 0; | |
585 | ||
246d0a17 MB |
586 | if (widget->id == snd_soc_dapm_supply) |
587 | return 0; | |
588 | ||
2b97eabc | 589 | /* active stream ? */ |
010ff262 MB |
590 | switch (widget->id) { |
591 | case snd_soc_dapm_dac: | |
592 | case snd_soc_dapm_aif_in: | |
593 | if (widget->active) | |
9949788b | 594 | return snd_soc_dapm_suspend_check(widget); |
010ff262 MB |
595 | default: |
596 | break; | |
597 | } | |
2b97eabc RP |
598 | |
599 | if (widget->connected) { | |
600 | /* connected pin ? */ | |
601 | if (widget->id == snd_soc_dapm_input && !widget->ext) | |
9949788b | 602 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
603 | |
604 | /* connected VMID/Bias for lower pops */ | |
605 | if (widget->id == snd_soc_dapm_vmid) | |
9949788b | 606 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
607 | |
608 | /* connected jack ? */ | |
eaeae5d9 PU |
609 | if (widget->id == snd_soc_dapm_mic || |
610 | (widget->id == snd_soc_dapm_line && !list_empty(&widget->sinks))) | |
9949788b | 611 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
612 | } |
613 | ||
614 | list_for_each_entry(path, &widget->sources, list_sink) { | |
615 | if (path->walked) | |
616 | continue; | |
617 | ||
618 | if (path->source && path->connect) { | |
619 | path->walked = 1; | |
620 | con += is_connected_input_ep(path->source); | |
621 | } | |
622 | } | |
623 | ||
624 | return con; | |
625 | } | |
626 | ||
e2be2ccf JN |
627 | /* |
628 | * Handler for generic register modifier widget. | |
629 | */ | |
630 | int dapm_reg_event(struct snd_soc_dapm_widget *w, | |
631 | struct snd_kcontrol *kcontrol, int event) | |
632 | { | |
633 | unsigned int val; | |
634 | ||
635 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
636 | val = w->on_val; | |
637 | else | |
638 | val = w->off_val; | |
639 | ||
640 | snd_soc_update_bits(w->codec, -(w->reg + 1), | |
641 | w->mask << w->shift, val << w->shift); | |
642 | ||
643 | return 0; | |
644 | } | |
11589418 | 645 | EXPORT_SYMBOL_GPL(dapm_reg_event); |
e2be2ccf | 646 | |
025756ec MB |
647 | /* Standard power change method, used to apply power changes to most |
648 | * widgets. | |
649 | */ | |
650 | static int dapm_generic_apply_power(struct snd_soc_dapm_widget *w) | |
651 | { | |
652 | int ret; | |
653 | ||
654 | /* call any power change event handlers */ | |
655 | if (w->event) | |
f7d41ae8 | 656 | dev_dbg(w->dapm->dev, "power %s event for %s flags %x\n", |
025756ec MB |
657 | w->power ? "on" : "off", |
658 | w->name, w->event_flags); | |
659 | ||
660 | /* power up pre event */ | |
661 | if (w->power && w->event && | |
662 | (w->event_flags & SND_SOC_DAPM_PRE_PMU)) { | |
663 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMU); | |
664 | if (ret < 0) | |
665 | return ret; | |
666 | } | |
667 | ||
668 | /* power down pre event */ | |
669 | if (!w->power && w->event && | |
670 | (w->event_flags & SND_SOC_DAPM_PRE_PMD)) { | |
671 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMD); | |
672 | if (ret < 0) | |
673 | return ret; | |
674 | } | |
675 | ||
025756ec MB |
676 | dapm_update_bits(w); |
677 | ||
025756ec MB |
678 | /* power up post event */ |
679 | if (w->power && w->event && | |
680 | (w->event_flags & SND_SOC_DAPM_POST_PMU)) { | |
681 | ret = w->event(w, | |
682 | NULL, SND_SOC_DAPM_POST_PMU); | |
683 | if (ret < 0) | |
684 | return ret; | |
685 | } | |
686 | ||
687 | /* power down post event */ | |
688 | if (!w->power && w->event && | |
689 | (w->event_flags & SND_SOC_DAPM_POST_PMD)) { | |
690 | ret = w->event(w, NULL, SND_SOC_DAPM_POST_PMD); | |
691 | if (ret < 0) | |
692 | return ret; | |
693 | } | |
694 | ||
695 | return 0; | |
696 | } | |
697 | ||
cd0f2d47 MB |
698 | /* Generic check to see if a widget should be powered. |
699 | */ | |
700 | static int dapm_generic_check_power(struct snd_soc_dapm_widget *w) | |
701 | { | |
702 | int in, out; | |
703 | ||
704 | in = is_connected_input_ep(w); | |
ce6120cc | 705 | dapm_clear_walk(w->dapm); |
cd0f2d47 | 706 | out = is_connected_output_ep(w); |
ce6120cc | 707 | dapm_clear_walk(w->dapm); |
cd0f2d47 MB |
708 | return out != 0 && in != 0; |
709 | } | |
710 | ||
6ea31b9f MB |
711 | /* Check to see if an ADC has power */ |
712 | static int dapm_adc_check_power(struct snd_soc_dapm_widget *w) | |
713 | { | |
714 | int in; | |
715 | ||
716 | if (w->active) { | |
717 | in = is_connected_input_ep(w); | |
ce6120cc | 718 | dapm_clear_walk(w->dapm); |
6ea31b9f MB |
719 | return in != 0; |
720 | } else { | |
721 | return dapm_generic_check_power(w); | |
722 | } | |
723 | } | |
724 | ||
725 | /* Check to see if a DAC has power */ | |
726 | static int dapm_dac_check_power(struct snd_soc_dapm_widget *w) | |
727 | { | |
728 | int out; | |
729 | ||
730 | if (w->active) { | |
731 | out = is_connected_output_ep(w); | |
ce6120cc | 732 | dapm_clear_walk(w->dapm); |
6ea31b9f MB |
733 | return out != 0; |
734 | } else { | |
735 | return dapm_generic_check_power(w); | |
736 | } | |
737 | } | |
738 | ||
246d0a17 MB |
739 | /* Check to see if a power supply is needed */ |
740 | static int dapm_supply_check_power(struct snd_soc_dapm_widget *w) | |
741 | { | |
742 | struct snd_soc_dapm_path *path; | |
743 | int power = 0; | |
744 | ||
745 | /* Check if one of our outputs is connected */ | |
746 | list_for_each_entry(path, &w->sinks, list_source) { | |
215edda3 MB |
747 | if (path->connected && |
748 | !path->connected(path->source, path->sink)) | |
749 | continue; | |
750 | ||
3017358a MB |
751 | if (!path->sink) |
752 | continue; | |
753 | ||
754 | if (path->sink->force) { | |
755 | power = 1; | |
756 | break; | |
757 | } | |
758 | ||
759 | if (path->sink->power_check && | |
246d0a17 MB |
760 | path->sink->power_check(path->sink)) { |
761 | power = 1; | |
762 | break; | |
763 | } | |
764 | } | |
765 | ||
ce6120cc | 766 | dapm_clear_walk(w->dapm); |
246d0a17 MB |
767 | |
768 | return power; | |
769 | } | |
770 | ||
38357ab2 MB |
771 | static int dapm_seq_compare(struct snd_soc_dapm_widget *a, |
772 | struct snd_soc_dapm_widget *b, | |
828a842f | 773 | bool power_up) |
42aa3418 | 774 | { |
828a842f MB |
775 | int *sort; |
776 | ||
777 | if (power_up) | |
778 | sort = dapm_up_seq; | |
779 | else | |
780 | sort = dapm_down_seq; | |
781 | ||
38357ab2 MB |
782 | if (sort[a->id] != sort[b->id]) |
783 | return sort[a->id] - sort[b->id]; | |
20e4859d MB |
784 | if (a->subseq != b->subseq) { |
785 | if (power_up) | |
786 | return a->subseq - b->subseq; | |
787 | else | |
788 | return b->subseq - a->subseq; | |
789 | } | |
b22ead2a MB |
790 | if (a->reg != b->reg) |
791 | return a->reg - b->reg; | |
84dab567 MB |
792 | if (a->dapm != b->dapm) |
793 | return (unsigned long)a->dapm - (unsigned long)b->dapm; | |
42aa3418 | 794 | |
38357ab2 MB |
795 | return 0; |
796 | } | |
42aa3418 | 797 | |
38357ab2 MB |
798 | /* Insert a widget in order into a DAPM power sequence. */ |
799 | static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget, | |
800 | struct list_head *list, | |
828a842f | 801 | bool power_up) |
38357ab2 MB |
802 | { |
803 | struct snd_soc_dapm_widget *w; | |
804 | ||
805 | list_for_each_entry(w, list, power_list) | |
828a842f | 806 | if (dapm_seq_compare(new_widget, w, power_up) < 0) { |
38357ab2 MB |
807 | list_add_tail(&new_widget->power_list, &w->power_list); |
808 | return; | |
809 | } | |
810 | ||
811 | list_add_tail(&new_widget->power_list, list); | |
812 | } | |
813 | ||
68f89ad8 MB |
814 | static void dapm_seq_check_event(struct snd_soc_dapm_context *dapm, |
815 | struct snd_soc_dapm_widget *w, int event) | |
816 | { | |
817 | struct snd_soc_card *card = dapm->card; | |
818 | const char *ev_name; | |
819 | int power, ret; | |
820 | ||
821 | switch (event) { | |
822 | case SND_SOC_DAPM_PRE_PMU: | |
823 | ev_name = "PRE_PMU"; | |
824 | power = 1; | |
825 | break; | |
826 | case SND_SOC_DAPM_POST_PMU: | |
827 | ev_name = "POST_PMU"; | |
828 | power = 1; | |
829 | break; | |
830 | case SND_SOC_DAPM_PRE_PMD: | |
831 | ev_name = "PRE_PMD"; | |
832 | power = 0; | |
833 | break; | |
834 | case SND_SOC_DAPM_POST_PMD: | |
835 | ev_name = "POST_PMD"; | |
836 | power = 0; | |
837 | break; | |
838 | default: | |
839 | BUG(); | |
840 | return; | |
841 | } | |
842 | ||
843 | if (w->power != power) | |
844 | return; | |
845 | ||
846 | if (w->event && (w->event_flags & event)) { | |
847 | pop_dbg(dapm->dev, card->pop_time, "pop test : %s %s\n", | |
848 | w->name, ev_name); | |
84e90930 | 849 | trace_snd_soc_dapm_widget_event_start(w, event); |
68f89ad8 | 850 | ret = w->event(w, NULL, event); |
84e90930 | 851 | trace_snd_soc_dapm_widget_event_done(w, event); |
68f89ad8 MB |
852 | if (ret < 0) |
853 | pr_err("%s: %s event failed: %d\n", | |
854 | ev_name, w->name, ret); | |
855 | } | |
856 | } | |
857 | ||
b22ead2a | 858 | /* Apply the coalesced changes from a DAPM sequence */ |
ce6120cc | 859 | static void dapm_seq_run_coalesced(struct snd_soc_dapm_context *dapm, |
b22ead2a | 860 | struct list_head *pending) |
163cac06 | 861 | { |
3a45b867 | 862 | struct snd_soc_card *card = dapm->card; |
68f89ad8 MB |
863 | struct snd_soc_dapm_widget *w; |
864 | int reg, power; | |
b22ead2a MB |
865 | unsigned int value = 0; |
866 | unsigned int mask = 0; | |
867 | unsigned int cur_mask; | |
868 | ||
869 | reg = list_first_entry(pending, struct snd_soc_dapm_widget, | |
870 | power_list)->reg; | |
871 | ||
872 | list_for_each_entry(w, pending, power_list) { | |
873 | cur_mask = 1 << w->shift; | |
874 | BUG_ON(reg != w->reg); | |
875 | ||
876 | if (w->invert) | |
877 | power = !w->power; | |
878 | else | |
879 | power = w->power; | |
880 | ||
881 | mask |= cur_mask; | |
882 | if (power) | |
883 | value |= cur_mask; | |
884 | ||
fd8d3bc0 | 885 | pop_dbg(dapm->dev, card->pop_time, |
b22ead2a MB |
886 | "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n", |
887 | w->name, reg, value, mask); | |
81628103 | 888 | |
68f89ad8 MB |
889 | /* Check for events */ |
890 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMU); | |
891 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMD); | |
81628103 MB |
892 | } |
893 | ||
894 | if (reg >= 0) { | |
fd8d3bc0 | 895 | pop_dbg(dapm->dev, card->pop_time, |
81628103 | 896 | "pop test : Applying 0x%x/0x%x to %x in %dms\n", |
3a45b867 JN |
897 | value, mask, reg, card->pop_time); |
898 | pop_wait(card->pop_time); | |
ce6120cc | 899 | snd_soc_update_bits(dapm->codec, reg, mask, value); |
b22ead2a MB |
900 | } |
901 | ||
81628103 | 902 | list_for_each_entry(w, pending, power_list) { |
68f89ad8 MB |
903 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMU); |
904 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMD); | |
81628103 | 905 | } |
b22ead2a | 906 | } |
42aa3418 | 907 | |
b22ead2a MB |
908 | /* Apply a DAPM power sequence. |
909 | * | |
910 | * We walk over a pre-sorted list of widgets to apply power to. In | |
911 | * order to minimise the number of writes to the device required | |
912 | * multiple widgets will be updated in a single write where possible. | |
913 | * Currently anything that requires more than a single write is not | |
914 | * handled. | |
915 | */ | |
ce6120cc | 916 | static void dapm_seq_run(struct snd_soc_dapm_context *dapm, |
828a842f | 917 | struct list_head *list, int event, bool power_up) |
b22ead2a MB |
918 | { |
919 | struct snd_soc_dapm_widget *w, *n; | |
920 | LIST_HEAD(pending); | |
921 | int cur_sort = -1; | |
20e4859d | 922 | int cur_subseq = -1; |
b22ead2a | 923 | int cur_reg = SND_SOC_NOPM; |
7be31be8 | 924 | struct snd_soc_dapm_context *cur_dapm = NULL; |
474b62d6 | 925 | int ret, i; |
828a842f MB |
926 | int *sort; |
927 | ||
928 | if (power_up) | |
929 | sort = dapm_up_seq; | |
930 | else | |
931 | sort = dapm_down_seq; | |
163cac06 | 932 | |
b22ead2a MB |
933 | list_for_each_entry_safe(w, n, list, power_list) { |
934 | ret = 0; | |
935 | ||
936 | /* Do we need to apply any queued changes? */ | |
7be31be8 | 937 | if (sort[w->id] != cur_sort || w->reg != cur_reg || |
20e4859d | 938 | w->dapm != cur_dapm || w->subseq != cur_subseq) { |
b22ead2a | 939 | if (!list_empty(&pending)) |
7be31be8 | 940 | dapm_seq_run_coalesced(cur_dapm, &pending); |
b22ead2a | 941 | |
474b62d6 MB |
942 | if (cur_dapm && cur_dapm->seq_notifier) { |
943 | for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++) | |
944 | if (sort[i] == cur_sort) | |
945 | cur_dapm->seq_notifier(cur_dapm, | |
f85a9e0d MB |
946 | i, |
947 | cur_subseq); | |
474b62d6 MB |
948 | } |
949 | ||
b22ead2a MB |
950 | INIT_LIST_HEAD(&pending); |
951 | cur_sort = -1; | |
20e4859d | 952 | cur_subseq = -1; |
b22ead2a | 953 | cur_reg = SND_SOC_NOPM; |
7be31be8 | 954 | cur_dapm = NULL; |
b22ead2a MB |
955 | } |
956 | ||
163cac06 MB |
957 | switch (w->id) { |
958 | case snd_soc_dapm_pre: | |
959 | if (!w->event) | |
b22ead2a MB |
960 | list_for_each_entry_safe_continue(w, n, list, |
961 | power_list); | |
163cac06 | 962 | |
b22ead2a | 963 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
964 | ret = w->event(w, |
965 | NULL, SND_SOC_DAPM_PRE_PMU); | |
b22ead2a | 966 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
967 | ret = w->event(w, |
968 | NULL, SND_SOC_DAPM_PRE_PMD); | |
163cac06 MB |
969 | break; |
970 | ||
971 | case snd_soc_dapm_post: | |
972 | if (!w->event) | |
b22ead2a MB |
973 | list_for_each_entry_safe_continue(w, n, list, |
974 | power_list); | |
163cac06 | 975 | |
b22ead2a | 976 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
977 | ret = w->event(w, |
978 | NULL, SND_SOC_DAPM_POST_PMU); | |
b22ead2a | 979 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
980 | ret = w->event(w, |
981 | NULL, SND_SOC_DAPM_POST_PMD); | |
163cac06 MB |
982 | break; |
983 | ||
b22ead2a MB |
984 | case snd_soc_dapm_input: |
985 | case snd_soc_dapm_output: | |
986 | case snd_soc_dapm_hp: | |
987 | case snd_soc_dapm_mic: | |
988 | case snd_soc_dapm_line: | |
989 | case snd_soc_dapm_spk: | |
990 | /* No register support currently */ | |
163cac06 | 991 | ret = dapm_generic_apply_power(w); |
163cac06 | 992 | break; |
b22ead2a MB |
993 | |
994 | default: | |
81628103 MB |
995 | /* Queue it up for application */ |
996 | cur_sort = sort[w->id]; | |
20e4859d | 997 | cur_subseq = w->subseq; |
81628103 | 998 | cur_reg = w->reg; |
7be31be8 | 999 | cur_dapm = w->dapm; |
81628103 MB |
1000 | list_move(&w->power_list, &pending); |
1001 | break; | |
163cac06 | 1002 | } |
b22ead2a MB |
1003 | |
1004 | if (ret < 0) | |
f7d41ae8 JN |
1005 | dev_err(w->dapm->dev, |
1006 | "Failed to apply widget power: %d\n", ret); | |
6ea31b9f | 1007 | } |
b22ead2a MB |
1008 | |
1009 | if (!list_empty(&pending)) | |
28e86808 | 1010 | dapm_seq_run_coalesced(cur_dapm, &pending); |
474b62d6 MB |
1011 | |
1012 | if (cur_dapm && cur_dapm->seq_notifier) { | |
1013 | for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++) | |
1014 | if (sort[i] == cur_sort) | |
1015 | cur_dapm->seq_notifier(cur_dapm, | |
f85a9e0d | 1016 | i, cur_subseq); |
474b62d6 | 1017 | } |
42aa3418 MB |
1018 | } |
1019 | ||
97404f2e MB |
1020 | static void dapm_widget_update(struct snd_soc_dapm_context *dapm) |
1021 | { | |
1022 | struct snd_soc_dapm_update *update = dapm->update; | |
1023 | struct snd_soc_dapm_widget *w; | |
1024 | int ret; | |
1025 | ||
1026 | if (!update) | |
1027 | return; | |
1028 | ||
1029 | w = update->widget; | |
1030 | ||
1031 | if (w->event && | |
1032 | (w->event_flags & SND_SOC_DAPM_PRE_REG)) { | |
1033 | ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG); | |
1034 | if (ret != 0) | |
1035 | pr_err("%s DAPM pre-event failed: %d\n", | |
1036 | w->name, ret); | |
1037 | } | |
1038 | ||
1039 | ret = snd_soc_update_bits(w->codec, update->reg, update->mask, | |
1040 | update->val); | |
1041 | if (ret < 0) | |
1042 | pr_err("%s DAPM update failed: %d\n", w->name, ret); | |
1043 | ||
1044 | if (w->event && | |
1045 | (w->event_flags & SND_SOC_DAPM_POST_REG)) { | |
1046 | ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG); | |
1047 | if (ret != 0) | |
1048 | pr_err("%s DAPM post-event failed: %d\n", | |
1049 | w->name, ret); | |
1050 | } | |
1051 | } | |
1052 | ||
9d0624a7 MB |
1053 | /* Async callback run prior to DAPM sequences - brings to _PREPARE if |
1054 | * they're changing state. | |
1055 | */ | |
1056 | static void dapm_pre_sequence_async(void *data, async_cookie_t cookie) | |
1057 | { | |
1058 | struct snd_soc_dapm_context *d = data; | |
1059 | int ret; | |
1060 | ||
1061 | if (d->dev_power && d->bias_level == SND_SOC_BIAS_OFF) { | |
1062 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY); | |
1063 | if (ret != 0) | |
1064 | dev_err(d->dev, | |
1065 | "Failed to turn on bias: %d\n", ret); | |
1066 | } | |
1067 | ||
1068 | /* If we're changing to all on or all off then prepare */ | |
1069 | if ((d->dev_power && d->bias_level == SND_SOC_BIAS_STANDBY) || | |
1070 | (!d->dev_power && d->bias_level == SND_SOC_BIAS_ON)) { | |
1071 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE); | |
1072 | if (ret != 0) | |
1073 | dev_err(d->dev, | |
1074 | "Failed to prepare bias: %d\n", ret); | |
1075 | } | |
1076 | } | |
1077 | ||
1078 | /* Async callback run prior to DAPM sequences - brings to their final | |
1079 | * state. | |
1080 | */ | |
1081 | static void dapm_post_sequence_async(void *data, async_cookie_t cookie) | |
1082 | { | |
1083 | struct snd_soc_dapm_context *d = data; | |
1084 | int ret; | |
1085 | ||
1086 | /* If we just powered the last thing off drop to standby bias */ | |
1087 | if (d->bias_level == SND_SOC_BIAS_PREPARE && !d->dev_power) { | |
1088 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY); | |
1089 | if (ret != 0) | |
1090 | dev_err(d->dev, "Failed to apply standby bias: %d\n", | |
1091 | ret); | |
1092 | } | |
97404f2e | 1093 | |
9d0624a7 MB |
1094 | /* If we're in standby and can support bias off then do that */ |
1095 | if (d->bias_level == SND_SOC_BIAS_STANDBY && d->idle_bias_off) { | |
1096 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF); | |
1097 | if (ret != 0) | |
1098 | dev_err(d->dev, "Failed to turn off bias: %d\n", ret); | |
1099 | } | |
1100 | ||
1101 | /* If we just powered up then move to active bias */ | |
1102 | if (d->bias_level == SND_SOC_BIAS_PREPARE && d->dev_power) { | |
1103 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON); | |
1104 | if (ret != 0) | |
1105 | dev_err(d->dev, "Failed to apply active bias: %d\n", | |
1106 | ret); | |
1107 | } | |
1108 | } | |
97404f2e | 1109 | |
2b97eabc RP |
1110 | /* |
1111 | * Scan each dapm widget for complete audio path. | |
1112 | * A complete path is a route that has valid endpoints i.e.:- | |
1113 | * | |
1114 | * o DAC to output pin. | |
1115 | * o Input Pin to ADC. | |
1116 | * o Input pin to Output pin (bypass, sidetone) | |
1117 | * o DAC to ADC (loopback). | |
1118 | */ | |
ce6120cc | 1119 | static int dapm_power_widgets(struct snd_soc_dapm_context *dapm, int event) |
2b97eabc | 1120 | { |
12ea2c78 | 1121 | struct snd_soc_card *card = dapm->card; |
2b97eabc | 1122 | struct snd_soc_dapm_widget *w; |
7be31be8 | 1123 | struct snd_soc_dapm_context *d; |
291f3bbc MB |
1124 | LIST_HEAD(up_list); |
1125 | LIST_HEAD(down_list); | |
9d0624a7 | 1126 | LIST_HEAD(async_domain); |
38357ab2 | 1127 | int power; |
6d3ddc81 | 1128 | |
84e90930 MB |
1129 | trace_snd_soc_dapm_start(card); |
1130 | ||
7be31be8 JN |
1131 | list_for_each_entry(d, &card->dapm_list, list) |
1132 | if (d->n_widgets) | |
1133 | d->dev_power = 0; | |
1134 | ||
6d3ddc81 MB |
1135 | /* Check which widgets we need to power and store them in |
1136 | * lists indicating if they should be powered up or down. | |
1137 | */ | |
97c866de | 1138 | list_for_each_entry(w, &card->widgets, list) { |
6d3ddc81 MB |
1139 | switch (w->id) { |
1140 | case snd_soc_dapm_pre: | |
828a842f | 1141 | dapm_seq_insert(w, &down_list, false); |
6d3ddc81 MB |
1142 | break; |
1143 | case snd_soc_dapm_post: | |
828a842f | 1144 | dapm_seq_insert(w, &up_list, true); |
6d3ddc81 MB |
1145 | break; |
1146 | ||
1147 | default: | |
1148 | if (!w->power_check) | |
1149 | continue; | |
1150 | ||
9949788b | 1151 | if (!w->force) |
50b6bce5 | 1152 | power = w->power_check(w); |
9949788b MB |
1153 | else |
1154 | power = 1; | |
1155 | if (power) | |
7be31be8 | 1156 | w->dapm->dev_power = 1; |
452c5eaa | 1157 | |
6d3ddc81 MB |
1158 | if (w->power == power) |
1159 | continue; | |
1160 | ||
84e90930 MB |
1161 | trace_snd_soc_dapm_widget_power(w, power); |
1162 | ||
6d3ddc81 | 1163 | if (power) |
828a842f | 1164 | dapm_seq_insert(w, &up_list, true); |
6d3ddc81 | 1165 | else |
828a842f | 1166 | dapm_seq_insert(w, &down_list, false); |
6d3ddc81 MB |
1167 | |
1168 | w->power = power; | |
1169 | break; | |
1170 | } | |
2b97eabc RP |
1171 | } |
1172 | ||
b14b76a5 MB |
1173 | /* If there are no DAPM widgets then try to figure out power from the |
1174 | * event type. | |
1175 | */ | |
97c866de | 1176 | if (!dapm->n_widgets) { |
b14b76a5 MB |
1177 | switch (event) { |
1178 | case SND_SOC_DAPM_STREAM_START: | |
1179 | case SND_SOC_DAPM_STREAM_RESUME: | |
7be31be8 | 1180 | dapm->dev_power = 1; |
b14b76a5 | 1181 | break; |
862af8ad | 1182 | case SND_SOC_DAPM_STREAM_STOP: |
7be31be8 | 1183 | dapm->dev_power = !!dapm->codec->active; |
862af8ad | 1184 | break; |
50b6bce5 | 1185 | case SND_SOC_DAPM_STREAM_SUSPEND: |
7be31be8 | 1186 | dapm->dev_power = 0; |
50b6bce5 | 1187 | break; |
b14b76a5 | 1188 | case SND_SOC_DAPM_STREAM_NOP: |
ce6120cc | 1189 | switch (dapm->bias_level) { |
a96ca338 MB |
1190 | case SND_SOC_BIAS_STANDBY: |
1191 | case SND_SOC_BIAS_OFF: | |
7be31be8 | 1192 | dapm->dev_power = 0; |
a96ca338 MB |
1193 | break; |
1194 | default: | |
7be31be8 | 1195 | dapm->dev_power = 1; |
a96ca338 MB |
1196 | break; |
1197 | } | |
50b6bce5 | 1198 | break; |
b14b76a5 MB |
1199 | default: |
1200 | break; | |
1201 | } | |
1202 | } | |
1203 | ||
9d0624a7 MB |
1204 | /* Run all the bias changes in parallel */ |
1205 | list_for_each_entry(d, &dapm->card->dapm_list, list) | |
1206 | async_schedule_domain(dapm_pre_sequence_async, d, | |
1207 | &async_domain); | |
1208 | async_synchronize_full_domain(&async_domain); | |
452c5eaa | 1209 | |
6d3ddc81 | 1210 | /* Power down widgets first; try to avoid amplifying pops. */ |
828a842f | 1211 | dapm_seq_run(dapm, &down_list, event, false); |
2b97eabc | 1212 | |
97404f2e MB |
1213 | dapm_widget_update(dapm); |
1214 | ||
6d3ddc81 | 1215 | /* Now power up. */ |
828a842f | 1216 | dapm_seq_run(dapm, &up_list, event, true); |
2b97eabc | 1217 | |
9d0624a7 MB |
1218 | /* Run all the bias changes in parallel */ |
1219 | list_for_each_entry(d, &dapm->card->dapm_list, list) | |
1220 | async_schedule_domain(dapm_post_sequence_async, d, | |
1221 | &async_domain); | |
1222 | async_synchronize_full_domain(&async_domain); | |
452c5eaa | 1223 | |
fd8d3bc0 JN |
1224 | pop_dbg(dapm->dev, card->pop_time, |
1225 | "DAPM sequencing finished, waiting %dms\n", card->pop_time); | |
3a45b867 | 1226 | pop_wait(card->pop_time); |
cb507e7e | 1227 | |
84e90930 MB |
1228 | trace_snd_soc_dapm_done(card); |
1229 | ||
42aa3418 | 1230 | return 0; |
2b97eabc RP |
1231 | } |
1232 | ||
79fb9387 MB |
1233 | #ifdef CONFIG_DEBUG_FS |
1234 | static int dapm_widget_power_open_file(struct inode *inode, struct file *file) | |
1235 | { | |
1236 | file->private_data = inode->i_private; | |
1237 | return 0; | |
1238 | } | |
1239 | ||
1240 | static ssize_t dapm_widget_power_read_file(struct file *file, | |
1241 | char __user *user_buf, | |
1242 | size_t count, loff_t *ppos) | |
1243 | { | |
1244 | struct snd_soc_dapm_widget *w = file->private_data; | |
1245 | char *buf; | |
1246 | int in, out; | |
1247 | ssize_t ret; | |
1248 | struct snd_soc_dapm_path *p = NULL; | |
1249 | ||
1250 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); | |
1251 | if (!buf) | |
1252 | return -ENOMEM; | |
1253 | ||
1254 | in = is_connected_input_ep(w); | |
ce6120cc | 1255 | dapm_clear_walk(w->dapm); |
79fb9387 | 1256 | out = is_connected_output_ep(w); |
ce6120cc | 1257 | dapm_clear_walk(w->dapm); |
79fb9387 | 1258 | |
d033c36a | 1259 | ret = snprintf(buf, PAGE_SIZE, "%s: %s in %d out %d", |
79fb9387 MB |
1260 | w->name, w->power ? "On" : "Off", in, out); |
1261 | ||
d033c36a MB |
1262 | if (w->reg >= 0) |
1263 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
1264 | " - R%d(0x%x) bit %d", | |
1265 | w->reg, w->reg, w->shift); | |
1266 | ||
1267 | ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n"); | |
1268 | ||
3eef08ba MB |
1269 | if (w->sname) |
1270 | ret += snprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n", | |
1271 | w->sname, | |
1272 | w->active ? "active" : "inactive"); | |
79fb9387 MB |
1273 | |
1274 | list_for_each_entry(p, &w->sources, list_sink) { | |
215edda3 MB |
1275 | if (p->connected && !p->connected(w, p->sink)) |
1276 | continue; | |
1277 | ||
79fb9387 MB |
1278 | if (p->connect) |
1279 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
67f5ed6e | 1280 | " in \"%s\" \"%s\"\n", |
79fb9387 MB |
1281 | p->name ? p->name : "static", |
1282 | p->source->name); | |
1283 | } | |
1284 | list_for_each_entry(p, &w->sinks, list_source) { | |
215edda3 MB |
1285 | if (p->connected && !p->connected(w, p->sink)) |
1286 | continue; | |
1287 | ||
79fb9387 MB |
1288 | if (p->connect) |
1289 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
67f5ed6e | 1290 | " out \"%s\" \"%s\"\n", |
79fb9387 MB |
1291 | p->name ? p->name : "static", |
1292 | p->sink->name); | |
1293 | } | |
1294 | ||
1295 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); | |
1296 | ||
1297 | kfree(buf); | |
1298 | return ret; | |
1299 | } | |
1300 | ||
1301 | static const struct file_operations dapm_widget_power_fops = { | |
1302 | .open = dapm_widget_power_open_file, | |
1303 | .read = dapm_widget_power_read_file, | |
6038f373 | 1304 | .llseek = default_llseek, |
79fb9387 MB |
1305 | }; |
1306 | ||
ce6120cc | 1307 | void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm) |
79fb9387 MB |
1308 | { |
1309 | struct snd_soc_dapm_widget *w; | |
1310 | struct dentry *d; | |
1311 | ||
ce6120cc | 1312 | if (!dapm->debugfs_dapm) |
79fb9387 MB |
1313 | return; |
1314 | ||
97c866de JN |
1315 | list_for_each_entry(w, &dapm->card->widgets, list) { |
1316 | if (!w->name || w->dapm != dapm) | |
79fb9387 MB |
1317 | continue; |
1318 | ||
1319 | d = debugfs_create_file(w->name, 0444, | |
ce6120cc | 1320 | dapm->debugfs_dapm, w, |
79fb9387 MB |
1321 | &dapm_widget_power_fops); |
1322 | if (!d) | |
f7d41ae8 JN |
1323 | dev_warn(w->dapm->dev, |
1324 | "ASoC: Failed to create %s debugfs file\n", | |
1325 | w->name); | |
79fb9387 MB |
1326 | } |
1327 | } | |
1328 | #else | |
ce6120cc | 1329 | void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm) |
79fb9387 MB |
1330 | { |
1331 | } | |
1332 | #endif | |
1333 | ||
2b97eabc | 1334 | /* test and update the power status of a mux widget */ |
d9c96cf3 | 1335 | static int dapm_mux_update_power(struct snd_soc_dapm_widget *widget, |
3a65577d MB |
1336 | struct snd_kcontrol *kcontrol, int change, |
1337 | int mux, struct soc_enum *e) | |
2b97eabc RP |
1338 | { |
1339 | struct snd_soc_dapm_path *path; | |
1340 | int found = 0; | |
1341 | ||
eff317d0 | 1342 | if (widget->id != snd_soc_dapm_mux && |
24ff33ac | 1343 | widget->id != snd_soc_dapm_virt_mux && |
eff317d0 | 1344 | widget->id != snd_soc_dapm_value_mux) |
2b97eabc RP |
1345 | return -ENODEV; |
1346 | ||
3a65577d | 1347 | if (!change) |
2b97eabc RP |
1348 | return 0; |
1349 | ||
1350 | /* find dapm widget path assoc with kcontrol */ | |
8ddab3f5 | 1351 | list_for_each_entry(path, &widget->dapm->card->paths, list) { |
2b97eabc RP |
1352 | if (path->kcontrol != kcontrol) |
1353 | continue; | |
1354 | ||
cb01e2b9 | 1355 | if (!path->name || !e->texts[mux]) |
2b97eabc RP |
1356 | continue; |
1357 | ||
1358 | found = 1; | |
1359 | /* we now need to match the string in the enum to the path */ | |
cb01e2b9 | 1360 | if (!(strcmp(path->name, e->texts[mux]))) |
2b97eabc RP |
1361 | path->connect = 1; /* new connection */ |
1362 | else | |
1363 | path->connect = 0; /* old connection must be powered down */ | |
1364 | } | |
1365 | ||
b91b8fa0 | 1366 | if (found) |
ce6120cc | 1367 | dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc RP |
1368 | |
1369 | return 0; | |
1370 | } | |
2b97eabc | 1371 | |
1b075e3f | 1372 | /* test and update the power status of a mixer or switch widget */ |
d9c96cf3 | 1373 | static int dapm_mixer_update_power(struct snd_soc_dapm_widget *widget, |
283375ce | 1374 | struct snd_kcontrol *kcontrol, int connect) |
2b97eabc RP |
1375 | { |
1376 | struct snd_soc_dapm_path *path; | |
1377 | int found = 0; | |
1378 | ||
1b075e3f | 1379 | if (widget->id != snd_soc_dapm_mixer && |
ca9c1aae | 1380 | widget->id != snd_soc_dapm_mixer_named_ctl && |
1b075e3f | 1381 | widget->id != snd_soc_dapm_switch) |
2b97eabc RP |
1382 | return -ENODEV; |
1383 | ||
2b97eabc | 1384 | /* find dapm widget path assoc with kcontrol */ |
8ddab3f5 | 1385 | list_for_each_entry(path, &widget->dapm->card->paths, list) { |
2b97eabc RP |
1386 | if (path->kcontrol != kcontrol) |
1387 | continue; | |
1388 | ||
1389 | /* found, now check type */ | |
1390 | found = 1; | |
283375ce | 1391 | path->connect = connect; |
2b97eabc RP |
1392 | break; |
1393 | } | |
1394 | ||
b91b8fa0 | 1395 | if (found) |
ce6120cc | 1396 | dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc RP |
1397 | |
1398 | return 0; | |
1399 | } | |
2b97eabc RP |
1400 | |
1401 | /* show dapm widget status in sys fs */ | |
1402 | static ssize_t dapm_widget_show(struct device *dev, | |
1403 | struct device_attribute *attr, char *buf) | |
1404 | { | |
f0fba2ad LG |
1405 | struct snd_soc_pcm_runtime *rtd = |
1406 | container_of(dev, struct snd_soc_pcm_runtime, dev); | |
1407 | struct snd_soc_codec *codec =rtd->codec; | |
2b97eabc RP |
1408 | struct snd_soc_dapm_widget *w; |
1409 | int count = 0; | |
1410 | char *state = "not set"; | |
1411 | ||
97c866de JN |
1412 | list_for_each_entry(w, &codec->card->widgets, list) { |
1413 | if (w->dapm != &codec->dapm) | |
1414 | continue; | |
2b97eabc RP |
1415 | |
1416 | /* only display widgets that burnm power */ | |
1417 | switch (w->id) { | |
1418 | case snd_soc_dapm_hp: | |
1419 | case snd_soc_dapm_mic: | |
1420 | case snd_soc_dapm_spk: | |
1421 | case snd_soc_dapm_line: | |
1422 | case snd_soc_dapm_micbias: | |
1423 | case snd_soc_dapm_dac: | |
1424 | case snd_soc_dapm_adc: | |
1425 | case snd_soc_dapm_pga: | |
d88429a6 | 1426 | case snd_soc_dapm_out_drv: |
2b97eabc | 1427 | case snd_soc_dapm_mixer: |
ca9c1aae | 1428 | case snd_soc_dapm_mixer_named_ctl: |
246d0a17 | 1429 | case snd_soc_dapm_supply: |
2b97eabc RP |
1430 | if (w->name) |
1431 | count += sprintf(buf + count, "%s: %s\n", | |
1432 | w->name, w->power ? "On":"Off"); | |
1433 | break; | |
1434 | default: | |
1435 | break; | |
1436 | } | |
1437 | } | |
1438 | ||
ce6120cc | 1439 | switch (codec->dapm.bias_level) { |
0be9898a MB |
1440 | case SND_SOC_BIAS_ON: |
1441 | state = "On"; | |
2b97eabc | 1442 | break; |
0be9898a MB |
1443 | case SND_SOC_BIAS_PREPARE: |
1444 | state = "Prepare"; | |
2b97eabc | 1445 | break; |
0be9898a MB |
1446 | case SND_SOC_BIAS_STANDBY: |
1447 | state = "Standby"; | |
2b97eabc | 1448 | break; |
0be9898a MB |
1449 | case SND_SOC_BIAS_OFF: |
1450 | state = "Off"; | |
2b97eabc RP |
1451 | break; |
1452 | } | |
1453 | count += sprintf(buf + count, "PM State: %s\n", state); | |
1454 | ||
1455 | return count; | |
1456 | } | |
1457 | ||
1458 | static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL); | |
1459 | ||
1460 | int snd_soc_dapm_sys_add(struct device *dev) | |
1461 | { | |
12ef193d | 1462 | return device_create_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1463 | } |
1464 | ||
1465 | static void snd_soc_dapm_sys_remove(struct device *dev) | |
1466 | { | |
aef90843 | 1467 | device_remove_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1468 | } |
1469 | ||
1470 | /* free all dapm widgets and resources */ | |
ce6120cc | 1471 | static void dapm_free_widgets(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
1472 | { |
1473 | struct snd_soc_dapm_widget *w, *next_w; | |
1474 | struct snd_soc_dapm_path *p, *next_p; | |
1475 | ||
97c866de JN |
1476 | list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) { |
1477 | if (w->dapm != dapm) | |
1478 | continue; | |
2b97eabc | 1479 | list_del(&w->list); |
8ddab3f5 JN |
1480 | /* |
1481 | * remove source and sink paths associated to this widget. | |
1482 | * While removing the path, remove reference to it from both | |
1483 | * source and sink widgets so that path is removed only once. | |
1484 | */ | |
1485 | list_for_each_entry_safe(p, next_p, &w->sources, list_sink) { | |
1486 | list_del(&p->list_sink); | |
1487 | list_del(&p->list_source); | |
1488 | list_del(&p->list); | |
1489 | kfree(p->long_name); | |
1490 | kfree(p); | |
1491 | } | |
1492 | list_for_each_entry_safe(p, next_p, &w->sinks, list_source) { | |
1493 | list_del(&p->list_sink); | |
1494 | list_del(&p->list_source); | |
1495 | list_del(&p->list); | |
1496 | kfree(p->long_name); | |
1497 | kfree(p); | |
1498 | } | |
ead9b919 | 1499 | kfree(w->name); |
2b97eabc RP |
1500 | kfree(w); |
1501 | } | |
2b97eabc RP |
1502 | } |
1503 | ||
ce6120cc | 1504 | static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm, |
1649923d | 1505 | const char *pin, int status) |
a5302181 LG |
1506 | { |
1507 | struct snd_soc_dapm_widget *w; | |
1508 | ||
97c866de JN |
1509 | list_for_each_entry(w, &dapm->card->widgets, list) { |
1510 | if (w->dapm != dapm) | |
1511 | continue; | |
a5302181 | 1512 | if (!strcmp(w->name, pin)) { |
f7d41ae8 JN |
1513 | dev_dbg(w->dapm->dev, "dapm: pin %s = %d\n", |
1514 | pin, status); | |
a5302181 | 1515 | w->connected = status; |
5b9e87cc MB |
1516 | /* Allow disabling of forced pins */ |
1517 | if (status == 0) | |
1518 | w->force = 0; | |
a5302181 LG |
1519 | return 0; |
1520 | } | |
1521 | } | |
1522 | ||
f7d41ae8 | 1523 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); |
a5302181 LG |
1524 | return -EINVAL; |
1525 | } | |
1526 | ||
2b97eabc | 1527 | /** |
a5302181 | 1528 | * snd_soc_dapm_sync - scan and power dapm paths |
ce6120cc | 1529 | * @dapm: DAPM context |
2b97eabc RP |
1530 | * |
1531 | * Walks all dapm audio paths and powers widgets according to their | |
1532 | * stream or path usage. | |
1533 | * | |
1534 | * Returns 0 for success. | |
1535 | */ | |
ce6120cc | 1536 | int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm) |
2b97eabc | 1537 | { |
ce6120cc | 1538 | return dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc | 1539 | } |
a5302181 | 1540 | EXPORT_SYMBOL_GPL(snd_soc_dapm_sync); |
2b97eabc | 1541 | |
ce6120cc | 1542 | static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm, |
215edda3 | 1543 | const struct snd_soc_dapm_route *route) |
2b97eabc RP |
1544 | { |
1545 | struct snd_soc_dapm_path *path; | |
1546 | struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w; | |
97c866de | 1547 | struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL; |
ead9b919 | 1548 | const char *sink; |
215edda3 | 1549 | const char *control = route->control; |
ead9b919 JN |
1550 | const char *source; |
1551 | char prefixed_sink[80]; | |
1552 | char prefixed_source[80]; | |
2b97eabc RP |
1553 | int ret = 0; |
1554 | ||
88e8b9a8 | 1555 | if (dapm->codec && dapm->codec->name_prefix) { |
ead9b919 JN |
1556 | snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s", |
1557 | dapm->codec->name_prefix, route->sink); | |
1558 | sink = prefixed_sink; | |
1559 | snprintf(prefixed_source, sizeof(prefixed_source), "%s %s", | |
1560 | dapm->codec->name_prefix, route->source); | |
1561 | source = prefixed_source; | |
1562 | } else { | |
1563 | sink = route->sink; | |
1564 | source = route->source; | |
1565 | } | |
1566 | ||
97c866de JN |
1567 | /* |
1568 | * find src and dest widgets over all widgets but favor a widget from | |
1569 | * current DAPM context | |
1570 | */ | |
1571 | list_for_each_entry(w, &dapm->card->widgets, list) { | |
2b97eabc | 1572 | if (!wsink && !(strcmp(w->name, sink))) { |
97c866de JN |
1573 | wtsink = w; |
1574 | if (w->dapm == dapm) | |
1575 | wsink = w; | |
2b97eabc RP |
1576 | continue; |
1577 | } | |
1578 | if (!wsource && !(strcmp(w->name, source))) { | |
97c866de JN |
1579 | wtsource = w; |
1580 | if (w->dapm == dapm) | |
1581 | wsource = w; | |
2b97eabc RP |
1582 | } |
1583 | } | |
97c866de JN |
1584 | /* use widget from another DAPM context if not found from this */ |
1585 | if (!wsink) | |
1586 | wsink = wtsink; | |
1587 | if (!wsource) | |
1588 | wsource = wtsource; | |
2b97eabc RP |
1589 | |
1590 | if (wsource == NULL || wsink == NULL) | |
1591 | return -ENODEV; | |
1592 | ||
1593 | path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL); | |
1594 | if (!path) | |
1595 | return -ENOMEM; | |
1596 | ||
1597 | path->source = wsource; | |
1598 | path->sink = wsink; | |
215edda3 | 1599 | path->connected = route->connected; |
2b97eabc RP |
1600 | INIT_LIST_HEAD(&path->list); |
1601 | INIT_LIST_HEAD(&path->list_source); | |
1602 | INIT_LIST_HEAD(&path->list_sink); | |
1603 | ||
1604 | /* check for external widgets */ | |
1605 | if (wsink->id == snd_soc_dapm_input) { | |
1606 | if (wsource->id == snd_soc_dapm_micbias || | |
1607 | wsource->id == snd_soc_dapm_mic || | |
087d53ab RC |
1608 | wsource->id == snd_soc_dapm_line || |
1609 | wsource->id == snd_soc_dapm_output) | |
2b97eabc RP |
1610 | wsink->ext = 1; |
1611 | } | |
1612 | if (wsource->id == snd_soc_dapm_output) { | |
1613 | if (wsink->id == snd_soc_dapm_spk || | |
1614 | wsink->id == snd_soc_dapm_hp || | |
1e39221e SF |
1615 | wsink->id == snd_soc_dapm_line || |
1616 | wsink->id == snd_soc_dapm_input) | |
2b97eabc RP |
1617 | wsource->ext = 1; |
1618 | } | |
1619 | ||
1620 | /* connect static paths */ | |
1621 | if (control == NULL) { | |
8ddab3f5 | 1622 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
1623 | list_add(&path->list_sink, &wsink->sources); |
1624 | list_add(&path->list_source, &wsource->sinks); | |
1625 | path->connect = 1; | |
1626 | return 0; | |
1627 | } | |
1628 | ||
1629 | /* connect dynamic paths */ | |
1630 | switch(wsink->id) { | |
1631 | case snd_soc_dapm_adc: | |
1632 | case snd_soc_dapm_dac: | |
1633 | case snd_soc_dapm_pga: | |
d88429a6 | 1634 | case snd_soc_dapm_out_drv: |
2b97eabc RP |
1635 | case snd_soc_dapm_input: |
1636 | case snd_soc_dapm_output: | |
1637 | case snd_soc_dapm_micbias: | |
1638 | case snd_soc_dapm_vmid: | |
1639 | case snd_soc_dapm_pre: | |
1640 | case snd_soc_dapm_post: | |
246d0a17 | 1641 | case snd_soc_dapm_supply: |
010ff262 MB |
1642 | case snd_soc_dapm_aif_in: |
1643 | case snd_soc_dapm_aif_out: | |
8ddab3f5 | 1644 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
1645 | list_add(&path->list_sink, &wsink->sources); |
1646 | list_add(&path->list_source, &wsource->sinks); | |
1647 | path->connect = 1; | |
1648 | return 0; | |
1649 | case snd_soc_dapm_mux: | |
24ff33ac | 1650 | case snd_soc_dapm_virt_mux: |
74155556 | 1651 | case snd_soc_dapm_value_mux: |
ce6120cc | 1652 | ret = dapm_connect_mux(dapm, wsource, wsink, path, control, |
2b97eabc RP |
1653 | &wsink->kcontrols[0]); |
1654 | if (ret != 0) | |
1655 | goto err; | |
1656 | break; | |
1657 | case snd_soc_dapm_switch: | |
1658 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1659 | case snd_soc_dapm_mixer_named_ctl: |
ce6120cc | 1660 | ret = dapm_connect_mixer(dapm, wsource, wsink, path, control); |
2b97eabc RP |
1661 | if (ret != 0) |
1662 | goto err; | |
1663 | break; | |
1664 | case snd_soc_dapm_hp: | |
1665 | case snd_soc_dapm_mic: | |
1666 | case snd_soc_dapm_line: | |
1667 | case snd_soc_dapm_spk: | |
8ddab3f5 | 1668 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
1669 | list_add(&path->list_sink, &wsink->sources); |
1670 | list_add(&path->list_source, &wsource->sinks); | |
1671 | path->connect = 0; | |
1672 | return 0; | |
1673 | } | |
1674 | return 0; | |
1675 | ||
1676 | err: | |
f7d41ae8 JN |
1677 | dev_warn(dapm->dev, "asoc: no dapm match for %s --> %s --> %s\n", |
1678 | source, control, sink); | |
2b97eabc RP |
1679 | kfree(path); |
1680 | return ret; | |
1681 | } | |
105f1c28 | 1682 | |
105f1c28 MB |
1683 | /** |
1684 | * snd_soc_dapm_add_routes - Add routes between DAPM widgets | |
ce6120cc | 1685 | * @dapm: DAPM context |
105f1c28 MB |
1686 | * @route: audio routes |
1687 | * @num: number of routes | |
1688 | * | |
1689 | * Connects 2 dapm widgets together via a named audio path. The sink is | |
1690 | * the widget receiving the audio signal, whilst the source is the sender | |
1691 | * of the audio signal. | |
1692 | * | |
1693 | * Returns 0 for success else error. On error all resources can be freed | |
1694 | * with a call to snd_soc_card_free(). | |
1695 | */ | |
ce6120cc | 1696 | int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm, |
105f1c28 MB |
1697 | const struct snd_soc_dapm_route *route, int num) |
1698 | { | |
1699 | int i, ret; | |
1700 | ||
1701 | for (i = 0; i < num; i++) { | |
ce6120cc | 1702 | ret = snd_soc_dapm_add_route(dapm, route); |
105f1c28 | 1703 | if (ret < 0) { |
f7d41ae8 JN |
1704 | dev_err(dapm->dev, "Failed to add route %s->%s\n", |
1705 | route->source, route->sink); | |
105f1c28 MB |
1706 | return ret; |
1707 | } | |
1708 | route++; | |
1709 | } | |
1710 | ||
1711 | return 0; | |
1712 | } | |
1713 | EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes); | |
1714 | ||
2b97eabc RP |
1715 | /** |
1716 | * snd_soc_dapm_new_widgets - add new dapm widgets | |
ce6120cc | 1717 | * @dapm: DAPM context |
2b97eabc RP |
1718 | * |
1719 | * Checks the codec for any new dapm widgets and creates them if found. | |
1720 | * | |
1721 | * Returns 0 for success. | |
1722 | */ | |
ce6120cc | 1723 | int snd_soc_dapm_new_widgets(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
1724 | { |
1725 | struct snd_soc_dapm_widget *w; | |
b66a70d5 | 1726 | unsigned int val; |
2b97eabc | 1727 | |
97c866de | 1728 | list_for_each_entry(w, &dapm->card->widgets, list) |
2b97eabc RP |
1729 | { |
1730 | if (w->new) | |
1731 | continue; | |
1732 | ||
1733 | switch(w->id) { | |
1734 | case snd_soc_dapm_switch: | |
1735 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1736 | case snd_soc_dapm_mixer_named_ctl: |
b75576d7 | 1737 | w->power_check = dapm_generic_check_power; |
ce6120cc | 1738 | dapm_new_mixer(dapm, w); |
2b97eabc RP |
1739 | break; |
1740 | case snd_soc_dapm_mux: | |
24ff33ac | 1741 | case snd_soc_dapm_virt_mux: |
2e72f8e3 | 1742 | case snd_soc_dapm_value_mux: |
b75576d7 | 1743 | w->power_check = dapm_generic_check_power; |
ce6120cc | 1744 | dapm_new_mux(dapm, w); |
2b97eabc RP |
1745 | break; |
1746 | case snd_soc_dapm_adc: | |
010ff262 | 1747 | case snd_soc_dapm_aif_out: |
b75576d7 MB |
1748 | w->power_check = dapm_adc_check_power; |
1749 | break; | |
2b97eabc | 1750 | case snd_soc_dapm_dac: |
010ff262 | 1751 | case snd_soc_dapm_aif_in: |
b75576d7 MB |
1752 | w->power_check = dapm_dac_check_power; |
1753 | break; | |
2b97eabc | 1754 | case snd_soc_dapm_pga: |
d88429a6 | 1755 | case snd_soc_dapm_out_drv: |
b75576d7 | 1756 | w->power_check = dapm_generic_check_power; |
ce6120cc | 1757 | dapm_new_pga(dapm, w); |
2b97eabc RP |
1758 | break; |
1759 | case snd_soc_dapm_input: | |
1760 | case snd_soc_dapm_output: | |
1761 | case snd_soc_dapm_micbias: | |
1762 | case snd_soc_dapm_spk: | |
1763 | case snd_soc_dapm_hp: | |
1764 | case snd_soc_dapm_mic: | |
1765 | case snd_soc_dapm_line: | |
b75576d7 MB |
1766 | w->power_check = dapm_generic_check_power; |
1767 | break; | |
246d0a17 MB |
1768 | case snd_soc_dapm_supply: |
1769 | w->power_check = dapm_supply_check_power; | |
2b97eabc RP |
1770 | case snd_soc_dapm_vmid: |
1771 | case snd_soc_dapm_pre: | |
1772 | case snd_soc_dapm_post: | |
1773 | break; | |
1774 | } | |
b66a70d5 MB |
1775 | |
1776 | /* Read the initial power state from the device */ | |
1777 | if (w->reg >= 0) { | |
1778 | val = snd_soc_read(w->codec, w->reg); | |
1779 | val &= 1 << w->shift; | |
1780 | if (w->invert) | |
1781 | val = !val; | |
1782 | ||
1783 | if (val) | |
1784 | w->power = 1; | |
1785 | } | |
1786 | ||
2b97eabc RP |
1787 | w->new = 1; |
1788 | } | |
1789 | ||
ce6120cc | 1790 | dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc RP |
1791 | return 0; |
1792 | } | |
1793 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets); | |
1794 | ||
1795 | /** | |
1796 | * snd_soc_dapm_get_volsw - dapm mixer get callback | |
1797 | * @kcontrol: mixer control | |
ac11a2b3 | 1798 | * @ucontrol: control element information |
2b97eabc RP |
1799 | * |
1800 | * Callback to get the value of a dapm mixer control. | |
1801 | * | |
1802 | * Returns 0 for success. | |
1803 | */ | |
1804 | int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol, | |
1805 | struct snd_ctl_elem_value *ucontrol) | |
1806 | { | |
1807 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
4eaa9819 JS |
1808 | struct soc_mixer_control *mc = |
1809 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
1810 | unsigned int reg = mc->reg; |
1811 | unsigned int shift = mc->shift; | |
1812 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1813 | int max = mc->max; |
815ecf8d JS |
1814 | unsigned int invert = mc->invert; |
1815 | unsigned int mask = (1 << fls(max)) - 1; | |
2b97eabc | 1816 | |
2b97eabc RP |
1817 | ucontrol->value.integer.value[0] = |
1818 | (snd_soc_read(widget->codec, reg) >> shift) & mask; | |
1819 | if (shift != rshift) | |
1820 | ucontrol->value.integer.value[1] = | |
1821 | (snd_soc_read(widget->codec, reg) >> rshift) & mask; | |
1822 | if (invert) { | |
1823 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1824 | max - ucontrol->value.integer.value[0]; |
2b97eabc RP |
1825 | if (shift != rshift) |
1826 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 1827 | max - ucontrol->value.integer.value[1]; |
2b97eabc RP |
1828 | } |
1829 | ||
1830 | return 0; | |
1831 | } | |
1832 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw); | |
1833 | ||
1834 | /** | |
1835 | * snd_soc_dapm_put_volsw - dapm mixer set callback | |
1836 | * @kcontrol: mixer control | |
ac11a2b3 | 1837 | * @ucontrol: control element information |
2b97eabc RP |
1838 | * |
1839 | * Callback to set the value of a dapm mixer control. | |
1840 | * | |
1841 | * Returns 0 for success. | |
1842 | */ | |
1843 | int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, | |
1844 | struct snd_ctl_elem_value *ucontrol) | |
1845 | { | |
1846 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
4eaa9819 JS |
1847 | struct soc_mixer_control *mc = |
1848 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
1849 | unsigned int reg = mc->reg; |
1850 | unsigned int shift = mc->shift; | |
4eaa9819 | 1851 | int max = mc->max; |
815ecf8d JS |
1852 | unsigned int mask = (1 << fls(max)) - 1; |
1853 | unsigned int invert = mc->invert; | |
e9cf7049 | 1854 | unsigned int val; |
97404f2e MB |
1855 | int connect, change; |
1856 | struct snd_soc_dapm_update update; | |
2b97eabc RP |
1857 | |
1858 | val = (ucontrol->value.integer.value[0] & mask); | |
1859 | ||
1860 | if (invert) | |
a7a4ac86 | 1861 | val = max - val; |
e9cf7049 | 1862 | mask = mask << shift; |
2b97eabc | 1863 | val = val << shift; |
2b97eabc RP |
1864 | |
1865 | mutex_lock(&widget->codec->mutex); | |
1866 | widget->value = val; | |
1867 | ||
e9cf7049 | 1868 | change = snd_soc_test_bits(widget->codec, reg, mask, val); |
97404f2e | 1869 | if (change) { |
283375ce MB |
1870 | if (val) |
1871 | /* new connection */ | |
1872 | connect = invert ? 0:1; | |
1873 | else | |
1874 | /* old connection must be powered down */ | |
1875 | connect = invert ? 1:0; | |
1876 | ||
97404f2e MB |
1877 | update.kcontrol = kcontrol; |
1878 | update.widget = widget; | |
1879 | update.reg = reg; | |
1880 | update.mask = mask; | |
1881 | update.val = val; | |
1882 | widget->dapm->update = &update; | |
1883 | ||
283375ce | 1884 | dapm_mixer_update_power(widget, kcontrol, connect); |
97404f2e MB |
1885 | |
1886 | widget->dapm->update = NULL; | |
283375ce MB |
1887 | } |
1888 | ||
2b97eabc | 1889 | mutex_unlock(&widget->codec->mutex); |
97404f2e | 1890 | return 0; |
2b97eabc RP |
1891 | } |
1892 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw); | |
1893 | ||
1894 | /** | |
1895 | * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback | |
1896 | * @kcontrol: mixer control | |
ac11a2b3 | 1897 | * @ucontrol: control element information |
2b97eabc RP |
1898 | * |
1899 | * Callback to get the value of a dapm enumerated double mixer control. | |
1900 | * | |
1901 | * Returns 0 for success. | |
1902 | */ | |
1903 | int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol, | |
1904 | struct snd_ctl_elem_value *ucontrol) | |
1905 | { | |
1906 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1907 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
46f5822f | 1908 | unsigned int val, bitmask; |
2b97eabc | 1909 | |
f8ba0b7b | 1910 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
1911 | ; |
1912 | val = snd_soc_read(widget->codec, e->reg); | |
1913 | ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1); | |
1914 | if (e->shift_l != e->shift_r) | |
1915 | ucontrol->value.enumerated.item[1] = | |
1916 | (val >> e->shift_r) & (bitmask - 1); | |
1917 | ||
1918 | return 0; | |
1919 | } | |
1920 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double); | |
1921 | ||
1922 | /** | |
1923 | * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback | |
1924 | * @kcontrol: mixer control | |
ac11a2b3 | 1925 | * @ucontrol: control element information |
2b97eabc RP |
1926 | * |
1927 | * Callback to set the value of a dapm enumerated double mixer control. | |
1928 | * | |
1929 | * Returns 0 for success. | |
1930 | */ | |
1931 | int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, | |
1932 | struct snd_ctl_elem_value *ucontrol) | |
1933 | { | |
1934 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1935 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
3a65577d | 1936 | unsigned int val, mux, change; |
46f5822f | 1937 | unsigned int mask, bitmask; |
97404f2e | 1938 | struct snd_soc_dapm_update update; |
2b97eabc | 1939 | |
f8ba0b7b | 1940 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc | 1941 | ; |
f8ba0b7b | 1942 | if (ucontrol->value.enumerated.item[0] > e->max - 1) |
2b97eabc RP |
1943 | return -EINVAL; |
1944 | mux = ucontrol->value.enumerated.item[0]; | |
1945 | val = mux << e->shift_l; | |
1946 | mask = (bitmask - 1) << e->shift_l; | |
1947 | if (e->shift_l != e->shift_r) { | |
f8ba0b7b | 1948 | if (ucontrol->value.enumerated.item[1] > e->max - 1) |
2b97eabc RP |
1949 | return -EINVAL; |
1950 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
1951 | mask |= (bitmask - 1) << e->shift_r; | |
1952 | } | |
1953 | ||
1954 | mutex_lock(&widget->codec->mutex); | |
1955 | widget->value = val; | |
3a65577d | 1956 | change = snd_soc_test_bits(widget->codec, e->reg, mask, val); |
1642e3d4 | 1957 | |
97404f2e MB |
1958 | update.kcontrol = kcontrol; |
1959 | update.widget = widget; | |
1960 | update.reg = e->reg; | |
1961 | update.mask = mask; | |
1962 | update.val = val; | |
1963 | widget->dapm->update = &update; | |
1642e3d4 | 1964 | |
97404f2e | 1965 | dapm_mux_update_power(widget, kcontrol, change, mux, e); |
1642e3d4 | 1966 | |
97404f2e | 1967 | widget->dapm->update = NULL; |
2b97eabc | 1968 | |
2b97eabc | 1969 | mutex_unlock(&widget->codec->mutex); |
97404f2e | 1970 | return change; |
2b97eabc RP |
1971 | } |
1972 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double); | |
1973 | ||
d2b247a8 MB |
1974 | /** |
1975 | * snd_soc_dapm_get_enum_virt - Get virtual DAPM mux | |
1976 | * @kcontrol: mixer control | |
1977 | * @ucontrol: control element information | |
1978 | * | |
1979 | * Returns 0 for success. | |
1980 | */ | |
1981 | int snd_soc_dapm_get_enum_virt(struct snd_kcontrol *kcontrol, | |
1982 | struct snd_ctl_elem_value *ucontrol) | |
1983 | { | |
1984 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1985 | ||
1986 | ucontrol->value.enumerated.item[0] = widget->value; | |
1987 | ||
1988 | return 0; | |
1989 | } | |
1990 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_virt); | |
1991 | ||
1992 | /** | |
1993 | * snd_soc_dapm_put_enum_virt - Set virtual DAPM mux | |
1994 | * @kcontrol: mixer control | |
1995 | * @ucontrol: control element information | |
1996 | * | |
1997 | * Returns 0 for success. | |
1998 | */ | |
1999 | int snd_soc_dapm_put_enum_virt(struct snd_kcontrol *kcontrol, | |
2000 | struct snd_ctl_elem_value *ucontrol) | |
2001 | { | |
2002 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
2003 | struct soc_enum *e = | |
2004 | (struct soc_enum *)kcontrol->private_value; | |
2005 | int change; | |
2006 | int ret = 0; | |
2007 | ||
2008 | if (ucontrol->value.enumerated.item[0] >= e->max) | |
2009 | return -EINVAL; | |
2010 | ||
2011 | mutex_lock(&widget->codec->mutex); | |
2012 | ||
2013 | change = widget->value != ucontrol->value.enumerated.item[0]; | |
2014 | widget->value = ucontrol->value.enumerated.item[0]; | |
2015 | dapm_mux_update_power(widget, kcontrol, change, widget->value, e); | |
2016 | ||
2017 | mutex_unlock(&widget->codec->mutex); | |
2018 | return ret; | |
2019 | } | |
2020 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt); | |
2021 | ||
2e72f8e3 PU |
2022 | /** |
2023 | * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get | |
2024 | * callback | |
2025 | * @kcontrol: mixer control | |
2026 | * @ucontrol: control element information | |
2027 | * | |
2028 | * Callback to get the value of a dapm semi enumerated double mixer control. | |
2029 | * | |
2030 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
2031 | * used for handling bitfield coded enumeration for example. | |
2032 | * | |
2033 | * Returns 0 for success. | |
2034 | */ | |
2035 | int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol *kcontrol, | |
2036 | struct snd_ctl_elem_value *ucontrol) | |
2037 | { | |
2038 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
74155556 | 2039 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f | 2040 | unsigned int reg_val, val, mux; |
2e72f8e3 PU |
2041 | |
2042 | reg_val = snd_soc_read(widget->codec, e->reg); | |
2043 | val = (reg_val >> e->shift_l) & e->mask; | |
2044 | for (mux = 0; mux < e->max; mux++) { | |
2045 | if (val == e->values[mux]) | |
2046 | break; | |
2047 | } | |
2048 | ucontrol->value.enumerated.item[0] = mux; | |
2049 | if (e->shift_l != e->shift_r) { | |
2050 | val = (reg_val >> e->shift_r) & e->mask; | |
2051 | for (mux = 0; mux < e->max; mux++) { | |
2052 | if (val == e->values[mux]) | |
2053 | break; | |
2054 | } | |
2055 | ucontrol->value.enumerated.item[1] = mux; | |
2056 | } | |
2057 | ||
2058 | return 0; | |
2059 | } | |
2060 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double); | |
2061 | ||
2062 | /** | |
2063 | * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set | |
2064 | * callback | |
2065 | * @kcontrol: mixer control | |
2066 | * @ucontrol: control element information | |
2067 | * | |
2068 | * Callback to set the value of a dapm semi enumerated double mixer control. | |
2069 | * | |
2070 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
2071 | * used for handling bitfield coded enumeration for example. | |
2072 | * | |
2073 | * Returns 0 for success. | |
2074 | */ | |
2075 | int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol, | |
2076 | struct snd_ctl_elem_value *ucontrol) | |
2077 | { | |
2078 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
74155556 | 2079 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
3a65577d | 2080 | unsigned int val, mux, change; |
46f5822f | 2081 | unsigned int mask; |
97404f2e | 2082 | struct snd_soc_dapm_update update; |
2e72f8e3 PU |
2083 | |
2084 | if (ucontrol->value.enumerated.item[0] > e->max - 1) | |
2085 | return -EINVAL; | |
2086 | mux = ucontrol->value.enumerated.item[0]; | |
2087 | val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l; | |
2088 | mask = e->mask << e->shift_l; | |
2089 | if (e->shift_l != e->shift_r) { | |
2090 | if (ucontrol->value.enumerated.item[1] > e->max - 1) | |
2091 | return -EINVAL; | |
2092 | val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r; | |
2093 | mask |= e->mask << e->shift_r; | |
2094 | } | |
2095 | ||
2096 | mutex_lock(&widget->codec->mutex); | |
2097 | widget->value = val; | |
3a65577d | 2098 | change = snd_soc_test_bits(widget->codec, e->reg, mask, val); |
1642e3d4 | 2099 | |
97404f2e MB |
2100 | update.kcontrol = kcontrol; |
2101 | update.widget = widget; | |
2102 | update.reg = e->reg; | |
2103 | update.mask = mask; | |
2104 | update.val = val; | |
2105 | widget->dapm->update = &update; | |
1642e3d4 | 2106 | |
97404f2e | 2107 | dapm_mux_update_power(widget, kcontrol, change, mux, e); |
1642e3d4 | 2108 | |
97404f2e | 2109 | widget->dapm->update = NULL; |
2e72f8e3 | 2110 | |
2e72f8e3 | 2111 | mutex_unlock(&widget->codec->mutex); |
97404f2e | 2112 | return change; |
2e72f8e3 PU |
2113 | } |
2114 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double); | |
2115 | ||
8b37dbd2 MB |
2116 | /** |
2117 | * snd_soc_dapm_info_pin_switch - Info for a pin switch | |
2118 | * | |
2119 | * @kcontrol: mixer control | |
2120 | * @uinfo: control element information | |
2121 | * | |
2122 | * Callback to provide information about a pin switch control. | |
2123 | */ | |
2124 | int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol, | |
2125 | struct snd_ctl_elem_info *uinfo) | |
2126 | { | |
2127 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
2128 | uinfo->count = 1; | |
2129 | uinfo->value.integer.min = 0; | |
2130 | uinfo->value.integer.max = 1; | |
2131 | ||
2132 | return 0; | |
2133 | } | |
2134 | EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch); | |
2135 | ||
2136 | /** | |
2137 | * snd_soc_dapm_get_pin_switch - Get information for a pin switch | |
2138 | * | |
2139 | * @kcontrol: mixer control | |
2140 | * @ucontrol: Value | |
2141 | */ | |
2142 | int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol, | |
2143 | struct snd_ctl_elem_value *ucontrol) | |
2144 | { | |
2145 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
2146 | const char *pin = (const char *)kcontrol->private_value; | |
2147 | ||
2148 | mutex_lock(&codec->mutex); | |
2149 | ||
2150 | ucontrol->value.integer.value[0] = | |
ce6120cc | 2151 | snd_soc_dapm_get_pin_status(&codec->dapm, pin); |
8b37dbd2 MB |
2152 | |
2153 | mutex_unlock(&codec->mutex); | |
2154 | ||
2155 | return 0; | |
2156 | } | |
2157 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch); | |
2158 | ||
2159 | /** | |
2160 | * snd_soc_dapm_put_pin_switch - Set information for a pin switch | |
2161 | * | |
2162 | * @kcontrol: mixer control | |
2163 | * @ucontrol: Value | |
2164 | */ | |
2165 | int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol, | |
2166 | struct snd_ctl_elem_value *ucontrol) | |
2167 | { | |
2168 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
2169 | const char *pin = (const char *)kcontrol->private_value; | |
2170 | ||
2171 | mutex_lock(&codec->mutex); | |
2172 | ||
2173 | if (ucontrol->value.integer.value[0]) | |
ce6120cc | 2174 | snd_soc_dapm_enable_pin(&codec->dapm, pin); |
8b37dbd2 | 2175 | else |
ce6120cc | 2176 | snd_soc_dapm_disable_pin(&codec->dapm, pin); |
8b37dbd2 | 2177 | |
ce6120cc | 2178 | snd_soc_dapm_sync(&codec->dapm); |
8b37dbd2 MB |
2179 | |
2180 | mutex_unlock(&codec->mutex); | |
2181 | ||
2182 | return 0; | |
2183 | } | |
2184 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch); | |
2185 | ||
2b97eabc RP |
2186 | /** |
2187 | * snd_soc_dapm_new_control - create new dapm control | |
ce6120cc | 2188 | * @dapm: DAPM context |
2b97eabc RP |
2189 | * @widget: widget template |
2190 | * | |
2191 | * Creates a new dapm control based upon the template. | |
2192 | * | |
2193 | * Returns 0 for success else error. | |
2194 | */ | |
ce6120cc | 2195 | int snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
2196 | const struct snd_soc_dapm_widget *widget) |
2197 | { | |
2198 | struct snd_soc_dapm_widget *w; | |
ead9b919 | 2199 | size_t name_len; |
2b97eabc RP |
2200 | |
2201 | if ((w = dapm_cnew_widget(widget)) == NULL) | |
2202 | return -ENOMEM; | |
2203 | ||
ead9b919 | 2204 | name_len = strlen(widget->name) + 1; |
88e8b9a8 | 2205 | if (dapm->codec && dapm->codec->name_prefix) |
ead9b919 JN |
2206 | name_len += 1 + strlen(dapm->codec->name_prefix); |
2207 | w->name = kmalloc(name_len, GFP_KERNEL); | |
2208 | if (w->name == NULL) { | |
2209 | kfree(w); | |
2210 | return -ENOMEM; | |
2211 | } | |
88e8b9a8 | 2212 | if (dapm->codec && dapm->codec->name_prefix) |
ead9b919 JN |
2213 | snprintf(w->name, name_len, "%s %s", |
2214 | dapm->codec->name_prefix, widget->name); | |
2215 | else | |
2216 | snprintf(w->name, name_len, "%s", widget->name); | |
2217 | ||
97c866de | 2218 | dapm->n_widgets++; |
ce6120cc LG |
2219 | w->dapm = dapm; |
2220 | w->codec = dapm->codec; | |
2b97eabc RP |
2221 | INIT_LIST_HEAD(&w->sources); |
2222 | INIT_LIST_HEAD(&w->sinks); | |
2223 | INIT_LIST_HEAD(&w->list); | |
97c866de | 2224 | list_add(&w->list, &dapm->card->widgets); |
2b97eabc RP |
2225 | |
2226 | /* machine layer set ups unconnected pins and insertions */ | |
2227 | w->connected = 1; | |
2228 | return 0; | |
2229 | } | |
2230 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control); | |
2231 | ||
4ba1327a MB |
2232 | /** |
2233 | * snd_soc_dapm_new_controls - create new dapm controls | |
ce6120cc | 2234 | * @dapm: DAPM context |
4ba1327a MB |
2235 | * @widget: widget array |
2236 | * @num: number of widgets | |
2237 | * | |
2238 | * Creates new DAPM controls based upon the templates. | |
2239 | * | |
2240 | * Returns 0 for success else error. | |
2241 | */ | |
ce6120cc | 2242 | int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm, |
4ba1327a MB |
2243 | const struct snd_soc_dapm_widget *widget, |
2244 | int num) | |
2245 | { | |
2246 | int i, ret; | |
2247 | ||
2248 | for (i = 0; i < num; i++) { | |
ce6120cc | 2249 | ret = snd_soc_dapm_new_control(dapm, widget); |
b8b33cb5 | 2250 | if (ret < 0) { |
f7d41ae8 JN |
2251 | dev_err(dapm->dev, |
2252 | "ASoC: Failed to create DAPM control %s: %d\n", | |
2253 | widget->name, ret); | |
4ba1327a | 2254 | return ret; |
b8b33cb5 | 2255 | } |
4ba1327a MB |
2256 | widget++; |
2257 | } | |
2258 | return 0; | |
2259 | } | |
2260 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls); | |
2261 | ||
ce6120cc | 2262 | static void soc_dapm_stream_event(struct snd_soc_dapm_context *dapm, |
f0fba2ad | 2263 | const char *stream, int event) |
2b97eabc RP |
2264 | { |
2265 | struct snd_soc_dapm_widget *w; | |
2266 | ||
97c866de | 2267 | list_for_each_entry(w, &dapm->card->widgets, list) |
2b97eabc | 2268 | { |
97c866de | 2269 | if (!w->sname || w->dapm != dapm) |
2b97eabc | 2270 | continue; |
f7d41ae8 JN |
2271 | dev_dbg(w->dapm->dev, "widget %s\n %s stream %s event %d\n", |
2272 | w->name, w->sname, stream, event); | |
2b97eabc RP |
2273 | if (strstr(w->sname, stream)) { |
2274 | switch(event) { | |
2275 | case SND_SOC_DAPM_STREAM_START: | |
2276 | w->active = 1; | |
2277 | break; | |
2278 | case SND_SOC_DAPM_STREAM_STOP: | |
2279 | w->active = 0; | |
2280 | break; | |
2281 | case SND_SOC_DAPM_STREAM_SUSPEND: | |
2b97eabc | 2282 | case SND_SOC_DAPM_STREAM_RESUME: |
2b97eabc | 2283 | case SND_SOC_DAPM_STREAM_PAUSE_PUSH: |
2b97eabc RP |
2284 | case SND_SOC_DAPM_STREAM_PAUSE_RELEASE: |
2285 | break; | |
2286 | } | |
2287 | } | |
2288 | } | |
2b97eabc | 2289 | |
ce6120cc LG |
2290 | dapm_power_widgets(dapm, event); |
2291 | } | |
2292 | ||
2293 | /** | |
2294 | * snd_soc_dapm_stream_event - send a stream event to the dapm core | |
2295 | * @rtd: PCM runtime data | |
2296 | * @stream: stream name | |
2297 | * @event: stream event | |
2298 | * | |
2299 | * Sends a stream event to the dapm core. The core then makes any | |
2300 | * necessary widget power changes. | |
2301 | * | |
2302 | * Returns 0 for success else error. | |
2303 | */ | |
2304 | int snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, | |
2305 | const char *stream, int event) | |
2306 | { | |
2307 | struct snd_soc_codec *codec = rtd->codec; | |
2308 | ||
2309 | if (stream == NULL) | |
2310 | return 0; | |
2311 | ||
2312 | mutex_lock(&codec->mutex); | |
2313 | soc_dapm_stream_event(&codec->dapm, stream, event); | |
8e8b2d67 | 2314 | mutex_unlock(&codec->mutex); |
2b97eabc RP |
2315 | return 0; |
2316 | } | |
2b97eabc RP |
2317 | |
2318 | /** | |
a5302181 | 2319 | * snd_soc_dapm_enable_pin - enable pin. |
ce6120cc | 2320 | * @dapm: DAPM context |
a5302181 | 2321 | * @pin: pin name |
2b97eabc | 2322 | * |
74b8f955 | 2323 | * Enables input/output pin and its parents or children widgets iff there is |
a5302181 LG |
2324 | * a valid audio route and active audio stream. |
2325 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2326 | * do any widget power switching. | |
2b97eabc | 2327 | */ |
ce6120cc | 2328 | int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin) |
2b97eabc | 2329 | { |
ce6120cc | 2330 | return snd_soc_dapm_set_pin(dapm, pin, 1); |
a5302181 LG |
2331 | } |
2332 | EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin); | |
2b97eabc | 2333 | |
da34183e MB |
2334 | /** |
2335 | * snd_soc_dapm_force_enable_pin - force a pin to be enabled | |
ce6120cc | 2336 | * @dapm: DAPM context |
da34183e MB |
2337 | * @pin: pin name |
2338 | * | |
2339 | * Enables input/output pin regardless of any other state. This is | |
2340 | * intended for use with microphone bias supplies used in microphone | |
2341 | * jack detection. | |
2342 | * | |
2343 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2344 | * do any widget power switching. | |
2345 | */ | |
ce6120cc LG |
2346 | int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm, |
2347 | const char *pin) | |
da34183e MB |
2348 | { |
2349 | struct snd_soc_dapm_widget *w; | |
2350 | ||
97c866de JN |
2351 | list_for_each_entry(w, &dapm->card->widgets, list) { |
2352 | if (w->dapm != dapm) | |
2353 | continue; | |
da34183e | 2354 | if (!strcmp(w->name, pin)) { |
f7d41ae8 JN |
2355 | dev_dbg(w->dapm->dev, |
2356 | "dapm: force enable pin %s\n", pin); | |
da34183e MB |
2357 | w->connected = 1; |
2358 | w->force = 1; | |
2359 | return 0; | |
2360 | } | |
2361 | } | |
2362 | ||
f7d41ae8 | 2363 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); |
da34183e MB |
2364 | return -EINVAL; |
2365 | } | |
2366 | EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin); | |
2367 | ||
a5302181 LG |
2368 | /** |
2369 | * snd_soc_dapm_disable_pin - disable pin. | |
ce6120cc | 2370 | * @dapm: DAPM context |
a5302181 LG |
2371 | * @pin: pin name |
2372 | * | |
74b8f955 | 2373 | * Disables input/output pin and its parents or children widgets. |
a5302181 LG |
2374 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to |
2375 | * do any widget power switching. | |
2376 | */ | |
ce6120cc LG |
2377 | int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm, |
2378 | const char *pin) | |
a5302181 | 2379 | { |
ce6120cc | 2380 | return snd_soc_dapm_set_pin(dapm, pin, 0); |
2b97eabc | 2381 | } |
a5302181 | 2382 | EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin); |
2b97eabc | 2383 | |
5817b52a MB |
2384 | /** |
2385 | * snd_soc_dapm_nc_pin - permanently disable pin. | |
ce6120cc | 2386 | * @dapm: DAPM context |
5817b52a MB |
2387 | * @pin: pin name |
2388 | * | |
2389 | * Marks the specified pin as being not connected, disabling it along | |
2390 | * any parent or child widgets. At present this is identical to | |
2391 | * snd_soc_dapm_disable_pin() but in future it will be extended to do | |
2392 | * additional things such as disabling controls which only affect | |
2393 | * paths through the pin. | |
2394 | * | |
2395 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2396 | * do any widget power switching. | |
2397 | */ | |
ce6120cc | 2398 | int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin) |
5817b52a | 2399 | { |
ce6120cc | 2400 | return snd_soc_dapm_set_pin(dapm, pin, 0); |
5817b52a MB |
2401 | } |
2402 | EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin); | |
2403 | ||
eeec12bf | 2404 | /** |
a5302181 | 2405 | * snd_soc_dapm_get_pin_status - get audio pin status |
ce6120cc | 2406 | * @dapm: DAPM context |
a5302181 | 2407 | * @pin: audio signal pin endpoint (or start point) |
eeec12bf | 2408 | * |
a5302181 | 2409 | * Get audio pin status - connected or disconnected. |
eeec12bf | 2410 | * |
a5302181 | 2411 | * Returns 1 for connected otherwise 0. |
eeec12bf | 2412 | */ |
ce6120cc LG |
2413 | int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm, |
2414 | const char *pin) | |
eeec12bf GG |
2415 | { |
2416 | struct snd_soc_dapm_widget *w; | |
2417 | ||
97c866de JN |
2418 | list_for_each_entry(w, &dapm->card->widgets, list) { |
2419 | if (w->dapm != dapm) | |
2420 | continue; | |
a5302181 | 2421 | if (!strcmp(w->name, pin)) |
eeec12bf GG |
2422 | return w->connected; |
2423 | } | |
2424 | ||
2425 | return 0; | |
2426 | } | |
a5302181 | 2427 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status); |
eeec12bf | 2428 | |
1547aba9 MB |
2429 | /** |
2430 | * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint | |
ce6120cc | 2431 | * @dapm: DAPM context |
1547aba9 MB |
2432 | * @pin: audio signal pin endpoint (or start point) |
2433 | * | |
2434 | * Mark the given endpoint or pin as ignoring suspend. When the | |
2435 | * system is disabled a path between two endpoints flagged as ignoring | |
2436 | * suspend will not be disabled. The path must already be enabled via | |
2437 | * normal means at suspend time, it will not be turned on if it was not | |
2438 | * already enabled. | |
2439 | */ | |
ce6120cc LG |
2440 | int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm, |
2441 | const char *pin) | |
1547aba9 MB |
2442 | { |
2443 | struct snd_soc_dapm_widget *w; | |
2444 | ||
97c866de JN |
2445 | list_for_each_entry(w, &dapm->card->widgets, list) { |
2446 | if (w->dapm != dapm) | |
2447 | continue; | |
1547aba9 MB |
2448 | if (!strcmp(w->name, pin)) { |
2449 | w->ignore_suspend = 1; | |
2450 | return 0; | |
2451 | } | |
2452 | } | |
2453 | ||
f7d41ae8 | 2454 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); |
1547aba9 MB |
2455 | return -EINVAL; |
2456 | } | |
2457 | EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend); | |
2458 | ||
2b97eabc RP |
2459 | /** |
2460 | * snd_soc_dapm_free - free dapm resources | |
f0fba2ad | 2461 | * @card: SoC device |
2b97eabc RP |
2462 | * |
2463 | * Free all dapm widgets and resources. | |
2464 | */ | |
ce6120cc | 2465 | void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm) |
2b97eabc | 2466 | { |
ce6120cc LG |
2467 | snd_soc_dapm_sys_remove(dapm->dev); |
2468 | dapm_free_widgets(dapm); | |
7be31be8 | 2469 | list_del(&dapm->list); |
2b97eabc RP |
2470 | } |
2471 | EXPORT_SYMBOL_GPL(snd_soc_dapm_free); | |
2472 | ||
ce6120cc | 2473 | static void soc_dapm_shutdown_codec(struct snd_soc_dapm_context *dapm) |
51737470 | 2474 | { |
51737470 MB |
2475 | struct snd_soc_dapm_widget *w; |
2476 | LIST_HEAD(down_list); | |
2477 | int powerdown = 0; | |
2478 | ||
97c866de JN |
2479 | list_for_each_entry(w, &dapm->card->widgets, list) { |
2480 | if (w->dapm != dapm) | |
2481 | continue; | |
51737470 | 2482 | if (w->power) { |
828a842f | 2483 | dapm_seq_insert(w, &down_list, false); |
c2caa4da | 2484 | w->power = 0; |
51737470 MB |
2485 | powerdown = 1; |
2486 | } | |
2487 | } | |
2488 | ||
2489 | /* If there were no widgets to power down we're already in | |
2490 | * standby. | |
2491 | */ | |
2492 | if (powerdown) { | |
ed5a4c47 | 2493 | snd_soc_dapm_set_bias_level(dapm, SND_SOC_BIAS_PREPARE); |
828a842f | 2494 | dapm_seq_run(dapm, &down_list, 0, false); |
ed5a4c47 | 2495 | snd_soc_dapm_set_bias_level(dapm, SND_SOC_BIAS_STANDBY); |
51737470 | 2496 | } |
f0fba2ad LG |
2497 | } |
2498 | ||
2499 | /* | |
2500 | * snd_soc_dapm_shutdown - callback for system shutdown | |
2501 | */ | |
2502 | void snd_soc_dapm_shutdown(struct snd_soc_card *card) | |
2503 | { | |
2504 | struct snd_soc_codec *codec; | |
2505 | ||
ce6120cc LG |
2506 | list_for_each_entry(codec, &card->codec_dev_list, list) { |
2507 | soc_dapm_shutdown_codec(&codec->dapm); | |
ed5a4c47 | 2508 | snd_soc_dapm_set_bias_level(&codec->dapm, SND_SOC_BIAS_OFF); |
ce6120cc | 2509 | } |
51737470 MB |
2510 | } |
2511 | ||
2b97eabc | 2512 | /* Module information */ |
d331124d | 2513 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
2b97eabc RP |
2514 | MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC"); |
2515 | MODULE_LICENSE("GPL"); |