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Commit | Line | Data |
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2b97eabc RP |
1 | /* |
2 | * soc-dapm.c -- ALSA SoC Dynamic Audio Power Management | |
3 | * | |
4 | * Copyright 2005 Wolfson Microelectronics PLC. | |
d331124d | 5 | * Author: Liam Girdwood <lrg@slimlogic.co.uk> |
2b97eabc RP |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2 of the License, or (at your | |
10 | * option) any later version. | |
11 | * | |
2b97eabc RP |
12 | * Features: |
13 | * o Changes power status of internal codec blocks depending on the | |
14 | * dynamic configuration of codec internal audio paths and active | |
74b8f955 | 15 | * DACs/ADCs. |
2b97eabc RP |
16 | * o Platform power domain - can support external components i.e. amps and |
17 | * mic/meadphone insertion events. | |
18 | * o Automatic Mic Bias support | |
19 | * o Jack insertion power event initiation - e.g. hp insertion will enable | |
20 | * sinks, dacs, etc | |
3a4fa0a2 | 21 | * o Delayed powerdown of audio susbsystem to reduce pops between a quick |
2b97eabc RP |
22 | * device reopen. |
23 | * | |
24 | * Todo: | |
25 | * o DAPM power change sequencing - allow for configurable per | |
26 | * codec sequences. | |
27 | * o Support for analogue bias optimisation. | |
28 | * o Support for reduced codec oversampling rates. | |
29 | * o Support for reduced codec bias currents. | |
30 | */ | |
31 | ||
32 | #include <linux/module.h> | |
33 | #include <linux/moduleparam.h> | |
34 | #include <linux/init.h> | |
9d0624a7 | 35 | #include <linux/async.h> |
2b97eabc RP |
36 | #include <linux/delay.h> |
37 | #include <linux/pm.h> | |
38 | #include <linux/bitops.h> | |
39 | #include <linux/platform_device.h> | |
40 | #include <linux/jiffies.h> | |
20496ff3 | 41 | #include <linux/debugfs.h> |
5a0e3ad6 | 42 | #include <linux/slab.h> |
2b97eabc RP |
43 | #include <sound/core.h> |
44 | #include <sound/pcm.h> | |
45 | #include <sound/pcm_params.h> | |
ce6120cc | 46 | #include <sound/soc.h> |
2b97eabc RP |
47 | #include <sound/initval.h> |
48 | ||
84e90930 MB |
49 | #include <trace/events/asoc.h> |
50 | ||
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 | 189 | struct soc_mixer_control *mc = (struct soc_mixer_control *) |
82cfecdc | 190 | w->kcontrol_news[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: { | |
82cfecdc SW |
207 | struct soc_enum *e = (struct soc_enum *) |
208 | w->kcontrol_news[i].private_value; | |
2b97eabc RP |
209 | int val, item, bitmask; |
210 | ||
f8ba0b7b | 211 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
212 | ; |
213 | val = snd_soc_read(w->codec, e->reg); | |
214 | item = (val >> e->shift_l) & (bitmask - 1); | |
215 | ||
216 | p->connect = 0; | |
f8ba0b7b | 217 | for (i = 0; i < e->max; i++) { |
2b97eabc RP |
218 | if (!(strcmp(p->name, e->texts[i])) && item == i) |
219 | p->connect = 1; | |
220 | } | |
221 | } | |
222 | break; | |
24ff33ac | 223 | case snd_soc_dapm_virt_mux: { |
82cfecdc SW |
224 | struct soc_enum *e = (struct soc_enum *) |
225 | w->kcontrol_news[i].private_value; | |
24ff33ac DP |
226 | |
227 | p->connect = 0; | |
228 | /* since a virtual mux has no backing registers to | |
229 | * decide which path to connect, it will try to match | |
230 | * with the first enumeration. This is to ensure | |
231 | * that the default mux choice (the first) will be | |
232 | * correctly powered up during initialization. | |
233 | */ | |
234 | if (!strcmp(p->name, e->texts[0])) | |
235 | p->connect = 1; | |
236 | } | |
237 | break; | |
2e72f8e3 | 238 | case snd_soc_dapm_value_mux: { |
74155556 | 239 | struct soc_enum *e = (struct soc_enum *) |
82cfecdc | 240 | w->kcontrol_news[i].private_value; |
2e72f8e3 PU |
241 | int val, item; |
242 | ||
243 | val = snd_soc_read(w->codec, e->reg); | |
244 | val = (val >> e->shift_l) & e->mask; | |
245 | for (item = 0; item < e->max; item++) { | |
246 | if (val == e->values[item]) | |
247 | break; | |
248 | } | |
249 | ||
250 | p->connect = 0; | |
251 | for (i = 0; i < e->max; i++) { | |
252 | if (!(strcmp(p->name, e->texts[i])) && item == i) | |
253 | p->connect = 1; | |
254 | } | |
255 | } | |
256 | break; | |
2b97eabc RP |
257 | /* does not effect routing - always connected */ |
258 | case snd_soc_dapm_pga: | |
d88429a6 | 259 | case snd_soc_dapm_out_drv: |
2b97eabc RP |
260 | case snd_soc_dapm_output: |
261 | case snd_soc_dapm_adc: | |
262 | case snd_soc_dapm_input: | |
263 | case snd_soc_dapm_dac: | |
264 | case snd_soc_dapm_micbias: | |
265 | case snd_soc_dapm_vmid: | |
246d0a17 | 266 | case snd_soc_dapm_supply: |
010ff262 MB |
267 | case snd_soc_dapm_aif_in: |
268 | case snd_soc_dapm_aif_out: | |
2b97eabc RP |
269 | p->connect = 1; |
270 | break; | |
271 | /* does effect routing - dynamically connected */ | |
272 | case snd_soc_dapm_hp: | |
273 | case snd_soc_dapm_mic: | |
274 | case snd_soc_dapm_spk: | |
275 | case snd_soc_dapm_line: | |
276 | case snd_soc_dapm_pre: | |
277 | case snd_soc_dapm_post: | |
278 | p->connect = 0; | |
279 | break; | |
280 | } | |
281 | } | |
282 | ||
74b8f955 | 283 | /* connect mux widget to its interconnecting audio paths */ |
ce6120cc | 284 | static int dapm_connect_mux(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
285 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, |
286 | struct snd_soc_dapm_path *path, const char *control_name, | |
287 | const struct snd_kcontrol_new *kcontrol) | |
288 | { | |
289 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
290 | int i; | |
291 | ||
f8ba0b7b | 292 | for (i = 0; i < e->max; i++) { |
2b97eabc | 293 | if (!(strcmp(control_name, e->texts[i]))) { |
8ddab3f5 | 294 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
295 | list_add(&path->list_sink, &dest->sources); |
296 | list_add(&path->list_source, &src->sinks); | |
297 | path->name = (char*)e->texts[i]; | |
298 | dapm_set_path_status(dest, path, 0); | |
299 | return 0; | |
300 | } | |
301 | } | |
302 | ||
303 | return -ENODEV; | |
304 | } | |
305 | ||
74b8f955 | 306 | /* connect mixer widget to its interconnecting audio paths */ |
ce6120cc | 307 | static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
308 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, |
309 | struct snd_soc_dapm_path *path, const char *control_name) | |
310 | { | |
311 | int i; | |
312 | ||
313 | /* search for mixer kcontrol */ | |
314 | for (i = 0; i < dest->num_kcontrols; i++) { | |
82cfecdc | 315 | if (!strcmp(control_name, dest->kcontrol_news[i].name)) { |
8ddab3f5 | 316 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
317 | list_add(&path->list_sink, &dest->sources); |
318 | list_add(&path->list_source, &src->sinks); | |
82cfecdc | 319 | path->name = dest->kcontrol_news[i].name; |
2b97eabc RP |
320 | dapm_set_path_status(dest, path, i); |
321 | return 0; | |
322 | } | |
323 | } | |
324 | return -ENODEV; | |
325 | } | |
326 | ||
af46800b SW |
327 | static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context *dapm, |
328 | const struct snd_kcontrol_new *kcontrol_new, | |
329 | struct snd_kcontrol **kcontrol) | |
330 | { | |
331 | struct snd_soc_dapm_widget *w; | |
332 | int i; | |
333 | ||
334 | *kcontrol = NULL; | |
335 | ||
336 | list_for_each_entry(w, &dapm->card->widgets, list) { | |
337 | for (i = 0; i < w->num_kcontrols; i++) { | |
338 | if (&w->kcontrol_news[i] == kcontrol_new) { | |
339 | if (w->kcontrols) | |
340 | *kcontrol = w->kcontrols[i]; | |
341 | return 1; | |
342 | } | |
343 | } | |
344 | } | |
345 | ||
346 | return 0; | |
347 | } | |
348 | ||
2b97eabc | 349 | /* create new dapm mixer control */ |
ce6120cc | 350 | static int dapm_new_mixer(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
351 | struct snd_soc_dapm_widget *w) |
352 | { | |
353 | int i, ret = 0; | |
3e5ff4df | 354 | size_t name_len, prefix_len; |
2b97eabc | 355 | struct snd_soc_dapm_path *path; |
12ea2c78 | 356 | struct snd_card *card = dapm->card->snd_card; |
efb7ac3f | 357 | const char *prefix; |
fafd2176 SW |
358 | struct snd_soc_dapm_widget_list *wlist; |
359 | size_t wlistsize; | |
efb7ac3f MB |
360 | |
361 | if (dapm->codec) | |
362 | prefix = dapm->codec->name_prefix; | |
363 | else | |
364 | prefix = NULL; | |
2b97eabc | 365 | |
3e5ff4df MB |
366 | if (prefix) |
367 | prefix_len = strlen(prefix) + 1; | |
368 | else | |
369 | prefix_len = 0; | |
370 | ||
2b97eabc RP |
371 | /* add kcontrol */ |
372 | for (i = 0; i < w->num_kcontrols; i++) { | |
373 | ||
374 | /* match name */ | |
375 | list_for_each_entry(path, &w->sources, list_sink) { | |
376 | ||
377 | /* mixer/mux paths name must match control name */ | |
82cfecdc | 378 | if (path->name != (char *)w->kcontrol_news[i].name) |
2b97eabc RP |
379 | continue; |
380 | ||
fafd2176 SW |
381 | wlistsize = sizeof(struct snd_soc_dapm_widget_list) + |
382 | sizeof(struct snd_soc_dapm_widget *), | |
383 | wlist = kzalloc(wlistsize, GFP_KERNEL); | |
384 | if (wlist == NULL) { | |
385 | dev_err(dapm->dev, | |
386 | "asoc: can't allocate widget list for %s\n", | |
387 | w->name); | |
388 | return -ENOMEM; | |
389 | } | |
390 | wlist->num_widgets = 1; | |
391 | wlist->widgets[0] = w; | |
392 | ||
ca9c1aae IM |
393 | /* add dapm control with long name. |
394 | * for dapm_mixer this is the concatenation of the | |
395 | * mixer and kcontrol name. | |
396 | * for dapm_mixer_named_ctl this is simply the | |
397 | * kcontrol name. | |
398 | */ | |
82cfecdc | 399 | name_len = strlen(w->kcontrol_news[i].name) + 1; |
07495f3e | 400 | if (w->id != snd_soc_dapm_mixer_named_ctl) |
ca9c1aae IM |
401 | name_len += 1 + strlen(w->name); |
402 | ||
219b93f5 | 403 | path->long_name = kmalloc(name_len, GFP_KERNEL); |
ca9c1aae | 404 | |
fafd2176 SW |
405 | if (path->long_name == NULL) { |
406 | kfree(wlist); | |
2b97eabc | 407 | return -ENOMEM; |
fafd2176 | 408 | } |
2b97eabc | 409 | |
ca9c1aae | 410 | switch (w->id) { |
ca9c1aae | 411 | default: |
3e5ff4df MB |
412 | /* The control will get a prefix from |
413 | * the control creation process but | |
414 | * we're also using the same prefix | |
415 | * for widgets so cut the prefix off | |
416 | * the front of the widget name. | |
417 | */ | |
ca9c1aae | 418 | snprintf(path->long_name, name_len, "%s %s", |
3e5ff4df | 419 | w->name + prefix_len, |
82cfecdc | 420 | w->kcontrol_news[i].name); |
07495f3e | 421 | break; |
ca9c1aae IM |
422 | case snd_soc_dapm_mixer_named_ctl: |
423 | snprintf(path->long_name, name_len, "%s", | |
82cfecdc | 424 | w->kcontrol_news[i].name); |
07495f3e | 425 | break; |
ca9c1aae IM |
426 | } |
427 | ||
219b93f5 MB |
428 | path->long_name[name_len - 1] = '\0'; |
429 | ||
fafd2176 SW |
430 | path->kcontrol = snd_soc_cnew(&w->kcontrol_news[i], |
431 | wlist, path->long_name, | |
432 | prefix); | |
ce6120cc | 433 | ret = snd_ctl_add(card, path->kcontrol); |
2b97eabc | 434 | if (ret < 0) { |
f7d41ae8 JN |
435 | dev_err(dapm->dev, |
436 | "asoc: failed to add dapm kcontrol %s: %d\n", | |
437 | path->long_name, ret); | |
fafd2176 | 438 | kfree(wlist); |
2b97eabc RP |
439 | kfree(path->long_name); |
440 | path->long_name = NULL; | |
441 | return ret; | |
442 | } | |
fad59888 | 443 | w->kcontrols[i] = path->kcontrol; |
2b97eabc RP |
444 | } |
445 | } | |
446 | return ret; | |
447 | } | |
448 | ||
449 | /* create new dapm mux control */ | |
ce6120cc | 450 | static int dapm_new_mux(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
451 | struct snd_soc_dapm_widget *w) |
452 | { | |
453 | struct snd_soc_dapm_path *path = NULL; | |
454 | struct snd_kcontrol *kcontrol; | |
12ea2c78 | 455 | struct snd_card *card = dapm->card->snd_card; |
efb7ac3f | 456 | const char *prefix; |
3e5ff4df | 457 | size_t prefix_len; |
af46800b | 458 | int ret; |
fafd2176 | 459 | struct snd_soc_dapm_widget_list *wlist; |
af46800b | 460 | int shared, wlistentries; |
fafd2176 | 461 | size_t wlistsize; |
af46800b | 462 | char *name; |
2b97eabc | 463 | |
af46800b SW |
464 | if (w->num_kcontrols != 1) { |
465 | dev_err(dapm->dev, | |
466 | "asoc: mux %s has incorrect number of controls\n", | |
467 | w->name); | |
2b97eabc RP |
468 | return -EINVAL; |
469 | } | |
470 | ||
af46800b SW |
471 | shared = dapm_is_shared_kcontrol(dapm, &w->kcontrol_news[0], |
472 | &kcontrol); | |
473 | if (kcontrol) { | |
474 | wlist = kcontrol->private_data; | |
475 | wlistentries = wlist->num_widgets + 1; | |
476 | } else { | |
477 | wlist = NULL; | |
478 | wlistentries = 1; | |
479 | } | |
fafd2176 | 480 | wlistsize = sizeof(struct snd_soc_dapm_widget_list) + |
af46800b SW |
481 | wlistentries * sizeof(struct snd_soc_dapm_widget *), |
482 | wlist = krealloc(wlist, wlistsize, GFP_KERNEL); | |
fafd2176 SW |
483 | if (wlist == NULL) { |
484 | dev_err(dapm->dev, | |
485 | "asoc: can't allocate widget list for %s\n", w->name); | |
486 | return -ENOMEM; | |
487 | } | |
af46800b SW |
488 | wlist->num_widgets = wlistentries; |
489 | wlist->widgets[wlistentries - 1] = w; | |
efb7ac3f | 490 | |
af46800b SW |
491 | if (!kcontrol) { |
492 | if (dapm->codec) | |
493 | prefix = dapm->codec->name_prefix; | |
494 | else | |
495 | prefix = NULL; | |
496 | ||
497 | if (shared) { | |
498 | name = w->kcontrol_news[0].name; | |
499 | prefix_len = 0; | |
500 | } else { | |
501 | name = w->name; | |
502 | if (prefix) | |
503 | prefix_len = strlen(prefix) + 1; | |
504 | else | |
505 | prefix_len = 0; | |
506 | } | |
3e5ff4df | 507 | |
af46800b SW |
508 | /* |
509 | * The control will get a prefix from the control creation | |
510 | * process but we're also using the same prefix for widgets so | |
511 | * cut the prefix off the front of the widget name. | |
512 | */ | |
513 | kcontrol = snd_soc_cnew(&w->kcontrol_news[0], wlist, | |
514 | name + prefix_len, prefix); | |
515 | ret = snd_ctl_add(card, kcontrol); | |
516 | if (ret < 0) { | |
517 | dev_err(dapm->dev, | |
518 | "asoc: failed to add kcontrol %s\n", w->name); | |
519 | kfree(wlist); | |
520 | return ret; | |
521 | } | |
522 | } | |
ce6120cc | 523 | |
af46800b | 524 | kcontrol->private_data = wlist; |
2b97eabc | 525 | |
fad59888 SW |
526 | w->kcontrols[0] = kcontrol; |
527 | ||
2b97eabc RP |
528 | list_for_each_entry(path, &w->sources, list_sink) |
529 | path->kcontrol = kcontrol; | |
530 | ||
af46800b | 531 | return 0; |
2b97eabc RP |
532 | } |
533 | ||
534 | /* create new dapm volume control */ | |
ce6120cc | 535 | static int dapm_new_pga(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
536 | struct snd_soc_dapm_widget *w) |
537 | { | |
a6c65736 | 538 | if (w->num_kcontrols) |
f7d41ae8 JN |
539 | dev_err(w->dapm->dev, |
540 | "asoc: PGA controls not supported: '%s'\n", w->name); | |
2b97eabc | 541 | |
a6c65736 | 542 | return 0; |
2b97eabc RP |
543 | } |
544 | ||
545 | /* reset 'walked' bit for each dapm path */ | |
ce6120cc | 546 | static inline void dapm_clear_walk(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
547 | { |
548 | struct snd_soc_dapm_path *p; | |
549 | ||
8ddab3f5 | 550 | list_for_each_entry(p, &dapm->card->paths, list) |
2b97eabc RP |
551 | p->walked = 0; |
552 | } | |
553 | ||
9949788b MB |
554 | /* We implement power down on suspend by checking the power state of |
555 | * the ALSA card - when we are suspending the ALSA state for the card | |
556 | * is set to D3. | |
557 | */ | |
558 | static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget) | |
559 | { | |
12ea2c78 | 560 | int level = snd_power_get_state(widget->dapm->card->snd_card); |
9949788b | 561 | |
f0fba2ad | 562 | switch (level) { |
9949788b MB |
563 | case SNDRV_CTL_POWER_D3hot: |
564 | case SNDRV_CTL_POWER_D3cold: | |
1547aba9 | 565 | if (widget->ignore_suspend) |
f7d41ae8 JN |
566 | dev_dbg(widget->dapm->dev, "%s ignoring suspend\n", |
567 | widget->name); | |
1547aba9 | 568 | return widget->ignore_suspend; |
9949788b MB |
569 | default: |
570 | return 1; | |
571 | } | |
572 | } | |
573 | ||
2b97eabc RP |
574 | /* |
575 | * Recursively check for a completed path to an active or physically connected | |
576 | * output widget. Returns number of complete paths. | |
577 | */ | |
578 | static int is_connected_output_ep(struct snd_soc_dapm_widget *widget) | |
579 | { | |
580 | struct snd_soc_dapm_path *path; | |
581 | int con = 0; | |
582 | ||
246d0a17 MB |
583 | if (widget->id == snd_soc_dapm_supply) |
584 | return 0; | |
585 | ||
010ff262 MB |
586 | switch (widget->id) { |
587 | case snd_soc_dapm_adc: | |
588 | case snd_soc_dapm_aif_out: | |
589 | if (widget->active) | |
9949788b | 590 | return snd_soc_dapm_suspend_check(widget); |
010ff262 MB |
591 | default: |
592 | break; | |
593 | } | |
2b97eabc RP |
594 | |
595 | if (widget->connected) { | |
596 | /* connected pin ? */ | |
597 | if (widget->id == snd_soc_dapm_output && !widget->ext) | |
9949788b | 598 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
599 | |
600 | /* connected jack or spk ? */ | |
601 | if (widget->id == snd_soc_dapm_hp || widget->id == snd_soc_dapm_spk || | |
eaeae5d9 | 602 | (widget->id == snd_soc_dapm_line && !list_empty(&widget->sources))) |
9949788b | 603 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
604 | } |
605 | ||
606 | list_for_each_entry(path, &widget->sinks, list_source) { | |
607 | if (path->walked) | |
608 | continue; | |
609 | ||
610 | if (path->sink && path->connect) { | |
611 | path->walked = 1; | |
612 | con += is_connected_output_ep(path->sink); | |
613 | } | |
614 | } | |
615 | ||
616 | return con; | |
617 | } | |
618 | ||
619 | /* | |
620 | * Recursively check for a completed path to an active or physically connected | |
621 | * input widget. Returns number of complete paths. | |
622 | */ | |
623 | static int is_connected_input_ep(struct snd_soc_dapm_widget *widget) | |
624 | { | |
625 | struct snd_soc_dapm_path *path; | |
626 | int con = 0; | |
627 | ||
246d0a17 MB |
628 | if (widget->id == snd_soc_dapm_supply) |
629 | return 0; | |
630 | ||
2b97eabc | 631 | /* active stream ? */ |
010ff262 MB |
632 | switch (widget->id) { |
633 | case snd_soc_dapm_dac: | |
634 | case snd_soc_dapm_aif_in: | |
635 | if (widget->active) | |
9949788b | 636 | return snd_soc_dapm_suspend_check(widget); |
010ff262 MB |
637 | default: |
638 | break; | |
639 | } | |
2b97eabc RP |
640 | |
641 | if (widget->connected) { | |
642 | /* connected pin ? */ | |
643 | if (widget->id == snd_soc_dapm_input && !widget->ext) | |
9949788b | 644 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
645 | |
646 | /* connected VMID/Bias for lower pops */ | |
647 | if (widget->id == snd_soc_dapm_vmid) | |
9949788b | 648 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
649 | |
650 | /* connected jack ? */ | |
eaeae5d9 PU |
651 | if (widget->id == snd_soc_dapm_mic || |
652 | (widget->id == snd_soc_dapm_line && !list_empty(&widget->sinks))) | |
9949788b | 653 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
654 | } |
655 | ||
656 | list_for_each_entry(path, &widget->sources, list_sink) { | |
657 | if (path->walked) | |
658 | continue; | |
659 | ||
660 | if (path->source && path->connect) { | |
661 | path->walked = 1; | |
662 | con += is_connected_input_ep(path->source); | |
663 | } | |
664 | } | |
665 | ||
666 | return con; | |
667 | } | |
668 | ||
e2be2ccf JN |
669 | /* |
670 | * Handler for generic register modifier widget. | |
671 | */ | |
672 | int dapm_reg_event(struct snd_soc_dapm_widget *w, | |
673 | struct snd_kcontrol *kcontrol, int event) | |
674 | { | |
675 | unsigned int val; | |
676 | ||
677 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
678 | val = w->on_val; | |
679 | else | |
680 | val = w->off_val; | |
681 | ||
682 | snd_soc_update_bits(w->codec, -(w->reg + 1), | |
683 | w->mask << w->shift, val << w->shift); | |
684 | ||
685 | return 0; | |
686 | } | |
11589418 | 687 | EXPORT_SYMBOL_GPL(dapm_reg_event); |
e2be2ccf | 688 | |
cd0f2d47 MB |
689 | /* Generic check to see if a widget should be powered. |
690 | */ | |
691 | static int dapm_generic_check_power(struct snd_soc_dapm_widget *w) | |
692 | { | |
693 | int in, out; | |
694 | ||
695 | in = is_connected_input_ep(w); | |
ce6120cc | 696 | dapm_clear_walk(w->dapm); |
cd0f2d47 | 697 | out = is_connected_output_ep(w); |
ce6120cc | 698 | dapm_clear_walk(w->dapm); |
cd0f2d47 MB |
699 | return out != 0 && in != 0; |
700 | } | |
701 | ||
6ea31b9f MB |
702 | /* Check to see if an ADC has power */ |
703 | static int dapm_adc_check_power(struct snd_soc_dapm_widget *w) | |
704 | { | |
705 | int in; | |
706 | ||
707 | if (w->active) { | |
708 | in = is_connected_input_ep(w); | |
ce6120cc | 709 | dapm_clear_walk(w->dapm); |
6ea31b9f MB |
710 | return in != 0; |
711 | } else { | |
712 | return dapm_generic_check_power(w); | |
713 | } | |
714 | } | |
715 | ||
716 | /* Check to see if a DAC has power */ | |
717 | static int dapm_dac_check_power(struct snd_soc_dapm_widget *w) | |
718 | { | |
719 | int out; | |
720 | ||
721 | if (w->active) { | |
722 | out = is_connected_output_ep(w); | |
ce6120cc | 723 | dapm_clear_walk(w->dapm); |
6ea31b9f MB |
724 | return out != 0; |
725 | } else { | |
726 | return dapm_generic_check_power(w); | |
727 | } | |
728 | } | |
729 | ||
246d0a17 MB |
730 | /* Check to see if a power supply is needed */ |
731 | static int dapm_supply_check_power(struct snd_soc_dapm_widget *w) | |
732 | { | |
733 | struct snd_soc_dapm_path *path; | |
734 | int power = 0; | |
735 | ||
736 | /* Check if one of our outputs is connected */ | |
737 | list_for_each_entry(path, &w->sinks, list_source) { | |
215edda3 MB |
738 | if (path->connected && |
739 | !path->connected(path->source, path->sink)) | |
740 | continue; | |
741 | ||
3017358a MB |
742 | if (!path->sink) |
743 | continue; | |
744 | ||
745 | if (path->sink->force) { | |
746 | power = 1; | |
747 | break; | |
748 | } | |
749 | ||
750 | if (path->sink->power_check && | |
246d0a17 MB |
751 | path->sink->power_check(path->sink)) { |
752 | power = 1; | |
753 | break; | |
754 | } | |
755 | } | |
756 | ||
ce6120cc | 757 | dapm_clear_walk(w->dapm); |
246d0a17 MB |
758 | |
759 | return power; | |
760 | } | |
761 | ||
38357ab2 MB |
762 | static int dapm_seq_compare(struct snd_soc_dapm_widget *a, |
763 | struct snd_soc_dapm_widget *b, | |
828a842f | 764 | bool power_up) |
42aa3418 | 765 | { |
828a842f MB |
766 | int *sort; |
767 | ||
768 | if (power_up) | |
769 | sort = dapm_up_seq; | |
770 | else | |
771 | sort = dapm_down_seq; | |
772 | ||
38357ab2 MB |
773 | if (sort[a->id] != sort[b->id]) |
774 | return sort[a->id] - sort[b->id]; | |
20e4859d MB |
775 | if (a->subseq != b->subseq) { |
776 | if (power_up) | |
777 | return a->subseq - b->subseq; | |
778 | else | |
779 | return b->subseq - a->subseq; | |
780 | } | |
b22ead2a MB |
781 | if (a->reg != b->reg) |
782 | return a->reg - b->reg; | |
84dab567 MB |
783 | if (a->dapm != b->dapm) |
784 | return (unsigned long)a->dapm - (unsigned long)b->dapm; | |
42aa3418 | 785 | |
38357ab2 MB |
786 | return 0; |
787 | } | |
42aa3418 | 788 | |
38357ab2 MB |
789 | /* Insert a widget in order into a DAPM power sequence. */ |
790 | static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget, | |
791 | struct list_head *list, | |
828a842f | 792 | bool power_up) |
38357ab2 MB |
793 | { |
794 | struct snd_soc_dapm_widget *w; | |
795 | ||
796 | list_for_each_entry(w, list, power_list) | |
828a842f | 797 | if (dapm_seq_compare(new_widget, w, power_up) < 0) { |
38357ab2 MB |
798 | list_add_tail(&new_widget->power_list, &w->power_list); |
799 | return; | |
800 | } | |
801 | ||
802 | list_add_tail(&new_widget->power_list, list); | |
803 | } | |
804 | ||
68f89ad8 MB |
805 | static void dapm_seq_check_event(struct snd_soc_dapm_context *dapm, |
806 | struct snd_soc_dapm_widget *w, int event) | |
807 | { | |
808 | struct snd_soc_card *card = dapm->card; | |
809 | const char *ev_name; | |
810 | int power, ret; | |
811 | ||
812 | switch (event) { | |
813 | case SND_SOC_DAPM_PRE_PMU: | |
814 | ev_name = "PRE_PMU"; | |
815 | power = 1; | |
816 | break; | |
817 | case SND_SOC_DAPM_POST_PMU: | |
818 | ev_name = "POST_PMU"; | |
819 | power = 1; | |
820 | break; | |
821 | case SND_SOC_DAPM_PRE_PMD: | |
822 | ev_name = "PRE_PMD"; | |
823 | power = 0; | |
824 | break; | |
825 | case SND_SOC_DAPM_POST_PMD: | |
826 | ev_name = "POST_PMD"; | |
827 | power = 0; | |
828 | break; | |
829 | default: | |
830 | BUG(); | |
831 | return; | |
832 | } | |
833 | ||
834 | if (w->power != power) | |
835 | return; | |
836 | ||
837 | if (w->event && (w->event_flags & event)) { | |
838 | pop_dbg(dapm->dev, card->pop_time, "pop test : %s %s\n", | |
839 | w->name, ev_name); | |
84e90930 | 840 | trace_snd_soc_dapm_widget_event_start(w, event); |
68f89ad8 | 841 | ret = w->event(w, NULL, event); |
84e90930 | 842 | trace_snd_soc_dapm_widget_event_done(w, event); |
68f89ad8 MB |
843 | if (ret < 0) |
844 | pr_err("%s: %s event failed: %d\n", | |
845 | ev_name, w->name, ret); | |
846 | } | |
847 | } | |
848 | ||
b22ead2a | 849 | /* Apply the coalesced changes from a DAPM sequence */ |
ce6120cc | 850 | static void dapm_seq_run_coalesced(struct snd_soc_dapm_context *dapm, |
b22ead2a | 851 | struct list_head *pending) |
163cac06 | 852 | { |
3a45b867 | 853 | struct snd_soc_card *card = dapm->card; |
68f89ad8 MB |
854 | struct snd_soc_dapm_widget *w; |
855 | int reg, power; | |
b22ead2a MB |
856 | unsigned int value = 0; |
857 | unsigned int mask = 0; | |
858 | unsigned int cur_mask; | |
859 | ||
860 | reg = list_first_entry(pending, struct snd_soc_dapm_widget, | |
861 | power_list)->reg; | |
862 | ||
863 | list_for_each_entry(w, pending, power_list) { | |
864 | cur_mask = 1 << w->shift; | |
865 | BUG_ON(reg != w->reg); | |
866 | ||
867 | if (w->invert) | |
868 | power = !w->power; | |
869 | else | |
870 | power = w->power; | |
871 | ||
872 | mask |= cur_mask; | |
873 | if (power) | |
874 | value |= cur_mask; | |
875 | ||
fd8d3bc0 | 876 | pop_dbg(dapm->dev, card->pop_time, |
b22ead2a MB |
877 | "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n", |
878 | w->name, reg, value, mask); | |
81628103 | 879 | |
68f89ad8 MB |
880 | /* Check for events */ |
881 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMU); | |
882 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMD); | |
81628103 MB |
883 | } |
884 | ||
885 | if (reg >= 0) { | |
fd8d3bc0 | 886 | pop_dbg(dapm->dev, card->pop_time, |
81628103 | 887 | "pop test : Applying 0x%x/0x%x to %x in %dms\n", |
3a45b867 JN |
888 | value, mask, reg, card->pop_time); |
889 | pop_wait(card->pop_time); | |
ce6120cc | 890 | snd_soc_update_bits(dapm->codec, reg, mask, value); |
b22ead2a MB |
891 | } |
892 | ||
81628103 | 893 | list_for_each_entry(w, pending, power_list) { |
68f89ad8 MB |
894 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMU); |
895 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMD); | |
81628103 | 896 | } |
b22ead2a | 897 | } |
42aa3418 | 898 | |
b22ead2a MB |
899 | /* Apply a DAPM power sequence. |
900 | * | |
901 | * We walk over a pre-sorted list of widgets to apply power to. In | |
902 | * order to minimise the number of writes to the device required | |
903 | * multiple widgets will be updated in a single write where possible. | |
904 | * Currently anything that requires more than a single write is not | |
905 | * handled. | |
906 | */ | |
ce6120cc | 907 | static void dapm_seq_run(struct snd_soc_dapm_context *dapm, |
828a842f | 908 | struct list_head *list, int event, bool power_up) |
b22ead2a MB |
909 | { |
910 | struct snd_soc_dapm_widget *w, *n; | |
911 | LIST_HEAD(pending); | |
912 | int cur_sort = -1; | |
20e4859d | 913 | int cur_subseq = -1; |
b22ead2a | 914 | int cur_reg = SND_SOC_NOPM; |
7be31be8 | 915 | struct snd_soc_dapm_context *cur_dapm = NULL; |
474b62d6 | 916 | int ret, i; |
828a842f MB |
917 | int *sort; |
918 | ||
919 | if (power_up) | |
920 | sort = dapm_up_seq; | |
921 | else | |
922 | sort = dapm_down_seq; | |
163cac06 | 923 | |
b22ead2a MB |
924 | list_for_each_entry_safe(w, n, list, power_list) { |
925 | ret = 0; | |
926 | ||
927 | /* Do we need to apply any queued changes? */ | |
7be31be8 | 928 | if (sort[w->id] != cur_sort || w->reg != cur_reg || |
20e4859d | 929 | w->dapm != cur_dapm || w->subseq != cur_subseq) { |
b22ead2a | 930 | if (!list_empty(&pending)) |
7be31be8 | 931 | dapm_seq_run_coalesced(cur_dapm, &pending); |
b22ead2a | 932 | |
474b62d6 MB |
933 | if (cur_dapm && cur_dapm->seq_notifier) { |
934 | for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++) | |
935 | if (sort[i] == cur_sort) | |
936 | cur_dapm->seq_notifier(cur_dapm, | |
f85a9e0d MB |
937 | i, |
938 | cur_subseq); | |
474b62d6 MB |
939 | } |
940 | ||
b22ead2a MB |
941 | INIT_LIST_HEAD(&pending); |
942 | cur_sort = -1; | |
20e4859d | 943 | cur_subseq = -1; |
b22ead2a | 944 | cur_reg = SND_SOC_NOPM; |
7be31be8 | 945 | cur_dapm = NULL; |
b22ead2a MB |
946 | } |
947 | ||
163cac06 MB |
948 | switch (w->id) { |
949 | case snd_soc_dapm_pre: | |
950 | if (!w->event) | |
b22ead2a MB |
951 | list_for_each_entry_safe_continue(w, n, list, |
952 | power_list); | |
163cac06 | 953 | |
b22ead2a | 954 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
955 | ret = w->event(w, |
956 | NULL, SND_SOC_DAPM_PRE_PMU); | |
b22ead2a | 957 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
958 | ret = w->event(w, |
959 | NULL, SND_SOC_DAPM_PRE_PMD); | |
163cac06 MB |
960 | break; |
961 | ||
962 | case snd_soc_dapm_post: | |
963 | if (!w->event) | |
b22ead2a MB |
964 | list_for_each_entry_safe_continue(w, n, list, |
965 | power_list); | |
163cac06 | 966 | |
b22ead2a | 967 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
968 | ret = w->event(w, |
969 | NULL, SND_SOC_DAPM_POST_PMU); | |
b22ead2a | 970 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
971 | ret = w->event(w, |
972 | NULL, SND_SOC_DAPM_POST_PMD); | |
163cac06 MB |
973 | break; |
974 | ||
b22ead2a | 975 | default: |
81628103 MB |
976 | /* Queue it up for application */ |
977 | cur_sort = sort[w->id]; | |
20e4859d | 978 | cur_subseq = w->subseq; |
81628103 | 979 | cur_reg = w->reg; |
7be31be8 | 980 | cur_dapm = w->dapm; |
81628103 MB |
981 | list_move(&w->power_list, &pending); |
982 | break; | |
163cac06 | 983 | } |
b22ead2a MB |
984 | |
985 | if (ret < 0) | |
f7d41ae8 JN |
986 | dev_err(w->dapm->dev, |
987 | "Failed to apply widget power: %d\n", ret); | |
6ea31b9f | 988 | } |
b22ead2a MB |
989 | |
990 | if (!list_empty(&pending)) | |
28e86808 | 991 | dapm_seq_run_coalesced(cur_dapm, &pending); |
474b62d6 MB |
992 | |
993 | if (cur_dapm && cur_dapm->seq_notifier) { | |
994 | for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++) | |
995 | if (sort[i] == cur_sort) | |
996 | cur_dapm->seq_notifier(cur_dapm, | |
f85a9e0d | 997 | i, cur_subseq); |
474b62d6 | 998 | } |
42aa3418 MB |
999 | } |
1000 | ||
97404f2e MB |
1001 | static void dapm_widget_update(struct snd_soc_dapm_context *dapm) |
1002 | { | |
1003 | struct snd_soc_dapm_update *update = dapm->update; | |
1004 | struct snd_soc_dapm_widget *w; | |
1005 | int ret; | |
1006 | ||
1007 | if (!update) | |
1008 | return; | |
1009 | ||
1010 | w = update->widget; | |
1011 | ||
1012 | if (w->event && | |
1013 | (w->event_flags & SND_SOC_DAPM_PRE_REG)) { | |
1014 | ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG); | |
1015 | if (ret != 0) | |
1016 | pr_err("%s DAPM pre-event failed: %d\n", | |
1017 | w->name, ret); | |
1018 | } | |
1019 | ||
1020 | ret = snd_soc_update_bits(w->codec, update->reg, update->mask, | |
1021 | update->val); | |
1022 | if (ret < 0) | |
1023 | pr_err("%s DAPM update failed: %d\n", w->name, ret); | |
1024 | ||
1025 | if (w->event && | |
1026 | (w->event_flags & SND_SOC_DAPM_POST_REG)) { | |
1027 | ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG); | |
1028 | if (ret != 0) | |
1029 | pr_err("%s DAPM post-event failed: %d\n", | |
1030 | w->name, ret); | |
1031 | } | |
1032 | } | |
1033 | ||
9d0624a7 MB |
1034 | /* Async callback run prior to DAPM sequences - brings to _PREPARE if |
1035 | * they're changing state. | |
1036 | */ | |
1037 | static void dapm_pre_sequence_async(void *data, async_cookie_t cookie) | |
1038 | { | |
1039 | struct snd_soc_dapm_context *d = data; | |
1040 | int ret; | |
1041 | ||
1042 | if (d->dev_power && d->bias_level == SND_SOC_BIAS_OFF) { | |
1043 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY); | |
1044 | if (ret != 0) | |
1045 | dev_err(d->dev, | |
1046 | "Failed to turn on bias: %d\n", ret); | |
1047 | } | |
1048 | ||
1049 | /* If we're changing to all on or all off then prepare */ | |
1050 | if ((d->dev_power && d->bias_level == SND_SOC_BIAS_STANDBY) || | |
1051 | (!d->dev_power && d->bias_level == SND_SOC_BIAS_ON)) { | |
1052 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE); | |
1053 | if (ret != 0) | |
1054 | dev_err(d->dev, | |
1055 | "Failed to prepare bias: %d\n", ret); | |
1056 | } | |
1057 | } | |
1058 | ||
1059 | /* Async callback run prior to DAPM sequences - brings to their final | |
1060 | * state. | |
1061 | */ | |
1062 | static void dapm_post_sequence_async(void *data, async_cookie_t cookie) | |
1063 | { | |
1064 | struct snd_soc_dapm_context *d = data; | |
1065 | int ret; | |
1066 | ||
1067 | /* If we just powered the last thing off drop to standby bias */ | |
1068 | if (d->bias_level == SND_SOC_BIAS_PREPARE && !d->dev_power) { | |
1069 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY); | |
1070 | if (ret != 0) | |
1071 | dev_err(d->dev, "Failed to apply standby bias: %d\n", | |
1072 | ret); | |
1073 | } | |
97404f2e | 1074 | |
9d0624a7 MB |
1075 | /* If we're in standby and can support bias off then do that */ |
1076 | if (d->bias_level == SND_SOC_BIAS_STANDBY && d->idle_bias_off) { | |
1077 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF); | |
1078 | if (ret != 0) | |
1079 | dev_err(d->dev, "Failed to turn off bias: %d\n", ret); | |
1080 | } | |
1081 | ||
1082 | /* If we just powered up then move to active bias */ | |
1083 | if (d->bias_level == SND_SOC_BIAS_PREPARE && d->dev_power) { | |
1084 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON); | |
1085 | if (ret != 0) | |
1086 | dev_err(d->dev, "Failed to apply active bias: %d\n", | |
1087 | ret); | |
1088 | } | |
1089 | } | |
97404f2e | 1090 | |
2b97eabc RP |
1091 | /* |
1092 | * Scan each dapm widget for complete audio path. | |
1093 | * A complete path is a route that has valid endpoints i.e.:- | |
1094 | * | |
1095 | * o DAC to output pin. | |
1096 | * o Input Pin to ADC. | |
1097 | * o Input pin to Output pin (bypass, sidetone) | |
1098 | * o DAC to ADC (loopback). | |
1099 | */ | |
ce6120cc | 1100 | static int dapm_power_widgets(struct snd_soc_dapm_context *dapm, int event) |
2b97eabc | 1101 | { |
12ea2c78 | 1102 | struct snd_soc_card *card = dapm->card; |
2b97eabc | 1103 | struct snd_soc_dapm_widget *w; |
7be31be8 | 1104 | struct snd_soc_dapm_context *d; |
291f3bbc MB |
1105 | LIST_HEAD(up_list); |
1106 | LIST_HEAD(down_list); | |
9d0624a7 | 1107 | LIST_HEAD(async_domain); |
38357ab2 | 1108 | int power; |
6d3ddc81 | 1109 | |
84e90930 MB |
1110 | trace_snd_soc_dapm_start(card); |
1111 | ||
7be31be8 | 1112 | list_for_each_entry(d, &card->dapm_list, list) |
ea77b947 | 1113 | if (d->n_widgets || d->codec == NULL) |
7be31be8 JN |
1114 | d->dev_power = 0; |
1115 | ||
6d3ddc81 MB |
1116 | /* Check which widgets we need to power and store them in |
1117 | * lists indicating if they should be powered up or down. | |
1118 | */ | |
97c866de | 1119 | list_for_each_entry(w, &card->widgets, list) { |
6d3ddc81 MB |
1120 | switch (w->id) { |
1121 | case snd_soc_dapm_pre: | |
828a842f | 1122 | dapm_seq_insert(w, &down_list, false); |
6d3ddc81 MB |
1123 | break; |
1124 | case snd_soc_dapm_post: | |
828a842f | 1125 | dapm_seq_insert(w, &up_list, true); |
6d3ddc81 MB |
1126 | break; |
1127 | ||
1128 | default: | |
1129 | if (!w->power_check) | |
1130 | continue; | |
1131 | ||
9949788b | 1132 | if (!w->force) |
50b6bce5 | 1133 | power = w->power_check(w); |
9949788b MB |
1134 | else |
1135 | power = 1; | |
1136 | if (power) | |
7be31be8 | 1137 | w->dapm->dev_power = 1; |
452c5eaa | 1138 | |
6d3ddc81 MB |
1139 | if (w->power == power) |
1140 | continue; | |
1141 | ||
84e90930 MB |
1142 | trace_snd_soc_dapm_widget_power(w, power); |
1143 | ||
6d3ddc81 | 1144 | if (power) |
828a842f | 1145 | dapm_seq_insert(w, &up_list, true); |
6d3ddc81 | 1146 | else |
828a842f | 1147 | dapm_seq_insert(w, &down_list, false); |
6d3ddc81 MB |
1148 | |
1149 | w->power = power; | |
1150 | break; | |
1151 | } | |
2b97eabc RP |
1152 | } |
1153 | ||
b14b76a5 MB |
1154 | /* If there are no DAPM widgets then try to figure out power from the |
1155 | * event type. | |
1156 | */ | |
97c866de | 1157 | if (!dapm->n_widgets) { |
b14b76a5 MB |
1158 | switch (event) { |
1159 | case SND_SOC_DAPM_STREAM_START: | |
1160 | case SND_SOC_DAPM_STREAM_RESUME: | |
7be31be8 | 1161 | dapm->dev_power = 1; |
b14b76a5 | 1162 | break; |
862af8ad | 1163 | case SND_SOC_DAPM_STREAM_STOP: |
7be31be8 | 1164 | dapm->dev_power = !!dapm->codec->active; |
862af8ad | 1165 | break; |
50b6bce5 | 1166 | case SND_SOC_DAPM_STREAM_SUSPEND: |
7be31be8 | 1167 | dapm->dev_power = 0; |
50b6bce5 | 1168 | break; |
b14b76a5 | 1169 | case SND_SOC_DAPM_STREAM_NOP: |
ce6120cc | 1170 | switch (dapm->bias_level) { |
a96ca338 MB |
1171 | case SND_SOC_BIAS_STANDBY: |
1172 | case SND_SOC_BIAS_OFF: | |
7be31be8 | 1173 | dapm->dev_power = 0; |
a96ca338 MB |
1174 | break; |
1175 | default: | |
7be31be8 | 1176 | dapm->dev_power = 1; |
a96ca338 MB |
1177 | break; |
1178 | } | |
50b6bce5 | 1179 | break; |
b14b76a5 MB |
1180 | default: |
1181 | break; | |
1182 | } | |
1183 | } | |
1184 | ||
52ba67bf MB |
1185 | /* Force all contexts in the card to the same bias state */ |
1186 | power = 0; | |
1187 | list_for_each_entry(d, &card->dapm_list, list) | |
1188 | if (d->dev_power) | |
1189 | power = 1; | |
1190 | list_for_each_entry(d, &card->dapm_list, list) | |
1191 | d->dev_power = power; | |
1192 | ||
1193 | ||
9d0624a7 MB |
1194 | /* Run all the bias changes in parallel */ |
1195 | list_for_each_entry(d, &dapm->card->dapm_list, list) | |
1196 | async_schedule_domain(dapm_pre_sequence_async, d, | |
1197 | &async_domain); | |
1198 | async_synchronize_full_domain(&async_domain); | |
452c5eaa | 1199 | |
6d3ddc81 | 1200 | /* Power down widgets first; try to avoid amplifying pops. */ |
828a842f | 1201 | dapm_seq_run(dapm, &down_list, event, false); |
2b97eabc | 1202 | |
97404f2e MB |
1203 | dapm_widget_update(dapm); |
1204 | ||
6d3ddc81 | 1205 | /* Now power up. */ |
828a842f | 1206 | dapm_seq_run(dapm, &up_list, event, true); |
2b97eabc | 1207 | |
9d0624a7 MB |
1208 | /* Run all the bias changes in parallel */ |
1209 | list_for_each_entry(d, &dapm->card->dapm_list, list) | |
1210 | async_schedule_domain(dapm_post_sequence_async, d, | |
1211 | &async_domain); | |
1212 | async_synchronize_full_domain(&async_domain); | |
452c5eaa | 1213 | |
fd8d3bc0 JN |
1214 | pop_dbg(dapm->dev, card->pop_time, |
1215 | "DAPM sequencing finished, waiting %dms\n", card->pop_time); | |
3a45b867 | 1216 | pop_wait(card->pop_time); |
cb507e7e | 1217 | |
84e90930 MB |
1218 | trace_snd_soc_dapm_done(card); |
1219 | ||
42aa3418 | 1220 | return 0; |
2b97eabc RP |
1221 | } |
1222 | ||
79fb9387 MB |
1223 | #ifdef CONFIG_DEBUG_FS |
1224 | static int dapm_widget_power_open_file(struct inode *inode, struct file *file) | |
1225 | { | |
1226 | file->private_data = inode->i_private; | |
1227 | return 0; | |
1228 | } | |
1229 | ||
1230 | static ssize_t dapm_widget_power_read_file(struct file *file, | |
1231 | char __user *user_buf, | |
1232 | size_t count, loff_t *ppos) | |
1233 | { | |
1234 | struct snd_soc_dapm_widget *w = file->private_data; | |
1235 | char *buf; | |
1236 | int in, out; | |
1237 | ssize_t ret; | |
1238 | struct snd_soc_dapm_path *p = NULL; | |
1239 | ||
1240 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); | |
1241 | if (!buf) | |
1242 | return -ENOMEM; | |
1243 | ||
1244 | in = is_connected_input_ep(w); | |
ce6120cc | 1245 | dapm_clear_walk(w->dapm); |
79fb9387 | 1246 | out = is_connected_output_ep(w); |
ce6120cc | 1247 | dapm_clear_walk(w->dapm); |
79fb9387 | 1248 | |
d033c36a | 1249 | ret = snprintf(buf, PAGE_SIZE, "%s: %s in %d out %d", |
79fb9387 MB |
1250 | w->name, w->power ? "On" : "Off", in, out); |
1251 | ||
d033c36a MB |
1252 | if (w->reg >= 0) |
1253 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
1254 | " - R%d(0x%x) bit %d", | |
1255 | w->reg, w->reg, w->shift); | |
1256 | ||
1257 | ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n"); | |
1258 | ||
3eef08ba MB |
1259 | if (w->sname) |
1260 | ret += snprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n", | |
1261 | w->sname, | |
1262 | w->active ? "active" : "inactive"); | |
79fb9387 MB |
1263 | |
1264 | list_for_each_entry(p, &w->sources, list_sink) { | |
215edda3 MB |
1265 | if (p->connected && !p->connected(w, p->sink)) |
1266 | continue; | |
1267 | ||
79fb9387 MB |
1268 | if (p->connect) |
1269 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
67f5ed6e | 1270 | " in \"%s\" \"%s\"\n", |
79fb9387 MB |
1271 | p->name ? p->name : "static", |
1272 | p->source->name); | |
1273 | } | |
1274 | list_for_each_entry(p, &w->sinks, list_source) { | |
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 | " out \"%s\" \"%s\"\n", |
79fb9387 MB |
1281 | p->name ? p->name : "static", |
1282 | p->sink->name); | |
1283 | } | |
1284 | ||
1285 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); | |
1286 | ||
1287 | kfree(buf); | |
1288 | return ret; | |
1289 | } | |
1290 | ||
1291 | static const struct file_operations dapm_widget_power_fops = { | |
1292 | .open = dapm_widget_power_open_file, | |
1293 | .read = dapm_widget_power_read_file, | |
6038f373 | 1294 | .llseek = default_llseek, |
79fb9387 MB |
1295 | }; |
1296 | ||
ef49e4fa MB |
1297 | static int dapm_bias_open_file(struct inode *inode, struct file *file) |
1298 | { | |
1299 | file->private_data = inode->i_private; | |
1300 | return 0; | |
1301 | } | |
1302 | ||
1303 | static ssize_t dapm_bias_read_file(struct file *file, char __user *user_buf, | |
1304 | size_t count, loff_t *ppos) | |
1305 | { | |
1306 | struct snd_soc_dapm_context *dapm = file->private_data; | |
1307 | char *level; | |
1308 | ||
1309 | switch (dapm->bias_level) { | |
1310 | case SND_SOC_BIAS_ON: | |
1311 | level = "On\n"; | |
1312 | break; | |
1313 | case SND_SOC_BIAS_PREPARE: | |
1314 | level = "Prepare\n"; | |
1315 | break; | |
1316 | case SND_SOC_BIAS_STANDBY: | |
1317 | level = "Standby\n"; | |
1318 | break; | |
1319 | case SND_SOC_BIAS_OFF: | |
1320 | level = "Off\n"; | |
1321 | break; | |
1322 | default: | |
1323 | BUG(); | |
1324 | level = "Unknown\n"; | |
1325 | break; | |
1326 | } | |
1327 | ||
1328 | return simple_read_from_buffer(user_buf, count, ppos, level, | |
1329 | strlen(level)); | |
1330 | } | |
1331 | ||
1332 | static const struct file_operations dapm_bias_fops = { | |
1333 | .open = dapm_bias_open_file, | |
1334 | .read = dapm_bias_read_file, | |
1335 | .llseek = default_llseek, | |
1336 | }; | |
1337 | ||
8eecaf62 LPC |
1338 | void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm, |
1339 | struct dentry *parent) | |
79fb9387 | 1340 | { |
79fb9387 MB |
1341 | struct dentry *d; |
1342 | ||
8eecaf62 LPC |
1343 | dapm->debugfs_dapm = debugfs_create_dir("dapm", parent); |
1344 | ||
1345 | if (!dapm->debugfs_dapm) { | |
1346 | printk(KERN_WARNING | |
1347 | "Failed to create DAPM debugfs directory\n"); | |
79fb9387 | 1348 | return; |
8eecaf62 | 1349 | } |
79fb9387 | 1350 | |
ef49e4fa MB |
1351 | d = debugfs_create_file("bias_level", 0444, |
1352 | dapm->debugfs_dapm, dapm, | |
1353 | &dapm_bias_fops); | |
1354 | if (!d) | |
1355 | dev_warn(dapm->dev, | |
1356 | "ASoC: Failed to create bias level debugfs file\n"); | |
d5d1e0be | 1357 | } |
ef49e4fa | 1358 | |
d5d1e0be LPC |
1359 | static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w) |
1360 | { | |
1361 | struct snd_soc_dapm_context *dapm = w->dapm; | |
1362 | struct dentry *d; | |
79fb9387 | 1363 | |
d5d1e0be LPC |
1364 | if (!dapm->debugfs_dapm || !w->name) |
1365 | return; | |
1366 | ||
1367 | d = debugfs_create_file(w->name, 0444, | |
1368 | dapm->debugfs_dapm, w, | |
1369 | &dapm_widget_power_fops); | |
1370 | if (!d) | |
1371 | dev_warn(w->dapm->dev, | |
1372 | "ASoC: Failed to create %s debugfs file\n", | |
1373 | w->name); | |
79fb9387 | 1374 | } |
d5d1e0be | 1375 | |
6c45e126 LPC |
1376 | static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm) |
1377 | { | |
1378 | debugfs_remove_recursive(dapm->debugfs_dapm); | |
1379 | } | |
1380 | ||
79fb9387 | 1381 | #else |
8eecaf62 LPC |
1382 | void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm, |
1383 | struct dentry *parent) | |
79fb9387 MB |
1384 | { |
1385 | } | |
d5d1e0be LPC |
1386 | |
1387 | static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w) | |
1388 | { | |
1389 | } | |
1390 | ||
6c45e126 LPC |
1391 | static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm) |
1392 | { | |
1393 | } | |
1394 | ||
79fb9387 MB |
1395 | #endif |
1396 | ||
2b97eabc | 1397 | /* test and update the power status of a mux widget */ |
d9c96cf3 | 1398 | static int dapm_mux_update_power(struct snd_soc_dapm_widget *widget, |
3a65577d MB |
1399 | struct snd_kcontrol *kcontrol, int change, |
1400 | int mux, struct soc_enum *e) | |
2b97eabc RP |
1401 | { |
1402 | struct snd_soc_dapm_path *path; | |
1403 | int found = 0; | |
1404 | ||
eff317d0 | 1405 | if (widget->id != snd_soc_dapm_mux && |
24ff33ac | 1406 | widget->id != snd_soc_dapm_virt_mux && |
eff317d0 | 1407 | widget->id != snd_soc_dapm_value_mux) |
2b97eabc RP |
1408 | return -ENODEV; |
1409 | ||
3a65577d | 1410 | if (!change) |
2b97eabc RP |
1411 | return 0; |
1412 | ||
1413 | /* find dapm widget path assoc with kcontrol */ | |
8ddab3f5 | 1414 | list_for_each_entry(path, &widget->dapm->card->paths, list) { |
2b97eabc RP |
1415 | if (path->kcontrol != kcontrol) |
1416 | continue; | |
1417 | ||
cb01e2b9 | 1418 | if (!path->name || !e->texts[mux]) |
2b97eabc RP |
1419 | continue; |
1420 | ||
1421 | found = 1; | |
1422 | /* we now need to match the string in the enum to the path */ | |
cb01e2b9 | 1423 | if (!(strcmp(path->name, e->texts[mux]))) |
2b97eabc RP |
1424 | path->connect = 1; /* new connection */ |
1425 | else | |
1426 | path->connect = 0; /* old connection must be powered down */ | |
1427 | } | |
1428 | ||
b91b8fa0 | 1429 | if (found) |
ce6120cc | 1430 | dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc RP |
1431 | |
1432 | return 0; | |
1433 | } | |
2b97eabc | 1434 | |
1b075e3f | 1435 | /* test and update the power status of a mixer or switch widget */ |
d9c96cf3 | 1436 | static int dapm_mixer_update_power(struct snd_soc_dapm_widget *widget, |
283375ce | 1437 | struct snd_kcontrol *kcontrol, int connect) |
2b97eabc RP |
1438 | { |
1439 | struct snd_soc_dapm_path *path; | |
1440 | int found = 0; | |
1441 | ||
1b075e3f | 1442 | if (widget->id != snd_soc_dapm_mixer && |
ca9c1aae | 1443 | widget->id != snd_soc_dapm_mixer_named_ctl && |
1b075e3f | 1444 | widget->id != snd_soc_dapm_switch) |
2b97eabc RP |
1445 | return -ENODEV; |
1446 | ||
2b97eabc | 1447 | /* find dapm widget path assoc with kcontrol */ |
8ddab3f5 | 1448 | list_for_each_entry(path, &widget->dapm->card->paths, list) { |
2b97eabc RP |
1449 | if (path->kcontrol != kcontrol) |
1450 | continue; | |
1451 | ||
1452 | /* found, now check type */ | |
1453 | found = 1; | |
283375ce | 1454 | path->connect = connect; |
2b97eabc RP |
1455 | break; |
1456 | } | |
1457 | ||
b91b8fa0 | 1458 | if (found) |
ce6120cc | 1459 | dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc RP |
1460 | |
1461 | return 0; | |
1462 | } | |
2b97eabc RP |
1463 | |
1464 | /* show dapm widget status in sys fs */ | |
1465 | static ssize_t dapm_widget_show(struct device *dev, | |
1466 | struct device_attribute *attr, char *buf) | |
1467 | { | |
f0fba2ad LG |
1468 | struct snd_soc_pcm_runtime *rtd = |
1469 | container_of(dev, struct snd_soc_pcm_runtime, dev); | |
1470 | struct snd_soc_codec *codec =rtd->codec; | |
2b97eabc RP |
1471 | struct snd_soc_dapm_widget *w; |
1472 | int count = 0; | |
1473 | char *state = "not set"; | |
1474 | ||
97c866de JN |
1475 | list_for_each_entry(w, &codec->card->widgets, list) { |
1476 | if (w->dapm != &codec->dapm) | |
1477 | continue; | |
2b97eabc RP |
1478 | |
1479 | /* only display widgets that burnm power */ | |
1480 | switch (w->id) { | |
1481 | case snd_soc_dapm_hp: | |
1482 | case snd_soc_dapm_mic: | |
1483 | case snd_soc_dapm_spk: | |
1484 | case snd_soc_dapm_line: | |
1485 | case snd_soc_dapm_micbias: | |
1486 | case snd_soc_dapm_dac: | |
1487 | case snd_soc_dapm_adc: | |
1488 | case snd_soc_dapm_pga: | |
d88429a6 | 1489 | case snd_soc_dapm_out_drv: |
2b97eabc | 1490 | case snd_soc_dapm_mixer: |
ca9c1aae | 1491 | case snd_soc_dapm_mixer_named_ctl: |
246d0a17 | 1492 | case snd_soc_dapm_supply: |
2b97eabc RP |
1493 | if (w->name) |
1494 | count += sprintf(buf + count, "%s: %s\n", | |
1495 | w->name, w->power ? "On":"Off"); | |
1496 | break; | |
1497 | default: | |
1498 | break; | |
1499 | } | |
1500 | } | |
1501 | ||
ce6120cc | 1502 | switch (codec->dapm.bias_level) { |
0be9898a MB |
1503 | case SND_SOC_BIAS_ON: |
1504 | state = "On"; | |
2b97eabc | 1505 | break; |
0be9898a MB |
1506 | case SND_SOC_BIAS_PREPARE: |
1507 | state = "Prepare"; | |
2b97eabc | 1508 | break; |
0be9898a MB |
1509 | case SND_SOC_BIAS_STANDBY: |
1510 | state = "Standby"; | |
2b97eabc | 1511 | break; |
0be9898a MB |
1512 | case SND_SOC_BIAS_OFF: |
1513 | state = "Off"; | |
2b97eabc RP |
1514 | break; |
1515 | } | |
1516 | count += sprintf(buf + count, "PM State: %s\n", state); | |
1517 | ||
1518 | return count; | |
1519 | } | |
1520 | ||
1521 | static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL); | |
1522 | ||
1523 | int snd_soc_dapm_sys_add(struct device *dev) | |
1524 | { | |
12ef193d | 1525 | return device_create_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1526 | } |
1527 | ||
1528 | static void snd_soc_dapm_sys_remove(struct device *dev) | |
1529 | { | |
aef90843 | 1530 | device_remove_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1531 | } |
1532 | ||
1533 | /* free all dapm widgets and resources */ | |
ce6120cc | 1534 | static void dapm_free_widgets(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
1535 | { |
1536 | struct snd_soc_dapm_widget *w, *next_w; | |
1537 | struct snd_soc_dapm_path *p, *next_p; | |
1538 | ||
97c866de JN |
1539 | list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) { |
1540 | if (w->dapm != dapm) | |
1541 | continue; | |
2b97eabc | 1542 | list_del(&w->list); |
8ddab3f5 JN |
1543 | /* |
1544 | * remove source and sink paths associated to this widget. | |
1545 | * While removing the path, remove reference to it from both | |
1546 | * source and sink widgets so that path is removed only once. | |
1547 | */ | |
1548 | list_for_each_entry_safe(p, next_p, &w->sources, list_sink) { | |
1549 | list_del(&p->list_sink); | |
1550 | list_del(&p->list_source); | |
1551 | list_del(&p->list); | |
1552 | kfree(p->long_name); | |
1553 | kfree(p); | |
1554 | } | |
1555 | list_for_each_entry_safe(p, next_p, &w->sinks, list_source) { | |
1556 | list_del(&p->list_sink); | |
1557 | list_del(&p->list_source); | |
1558 | list_del(&p->list); | |
1559 | kfree(p->long_name); | |
1560 | kfree(p); | |
1561 | } | |
fad59888 | 1562 | kfree(w->kcontrols); |
ead9b919 | 1563 | kfree(w->name); |
2b97eabc RP |
1564 | kfree(w); |
1565 | } | |
2b97eabc RP |
1566 | } |
1567 | ||
91a5fca4 LPC |
1568 | static struct snd_soc_dapm_widget *dapm_find_widget( |
1569 | struct snd_soc_dapm_context *dapm, const char *pin, | |
1570 | bool search_other_contexts) | |
a5302181 LG |
1571 | { |
1572 | struct snd_soc_dapm_widget *w; | |
91a5fca4 | 1573 | struct snd_soc_dapm_widget *fallback = NULL; |
a5302181 | 1574 | |
97c866de | 1575 | list_for_each_entry(w, &dapm->card->widgets, list) { |
a5302181 | 1576 | if (!strcmp(w->name, pin)) { |
91a5fca4 LPC |
1577 | if (w->dapm == dapm) |
1578 | return w; | |
1579 | else | |
1580 | fallback = w; | |
a5302181 LG |
1581 | } |
1582 | } | |
1583 | ||
91a5fca4 LPC |
1584 | if (search_other_contexts) |
1585 | return fallback; | |
1586 | ||
1587 | return NULL; | |
1588 | } | |
1589 | ||
1590 | static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm, | |
1591 | const char *pin, int status) | |
1592 | { | |
1593 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); | |
1594 | ||
1595 | if (!w) { | |
1596 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); | |
1597 | return -EINVAL; | |
0d86733c MB |
1598 | } |
1599 | ||
91a5fca4 LPC |
1600 | w->connected = status; |
1601 | if (status == 0) | |
1602 | w->force = 0; | |
1603 | ||
1604 | return 0; | |
a5302181 LG |
1605 | } |
1606 | ||
2b97eabc | 1607 | /** |
a5302181 | 1608 | * snd_soc_dapm_sync - scan and power dapm paths |
ce6120cc | 1609 | * @dapm: DAPM context |
2b97eabc RP |
1610 | * |
1611 | * Walks all dapm audio paths and powers widgets according to their | |
1612 | * stream or path usage. | |
1613 | * | |
1614 | * Returns 0 for success. | |
1615 | */ | |
ce6120cc | 1616 | int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm) |
2b97eabc | 1617 | { |
ce6120cc | 1618 | return dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc | 1619 | } |
a5302181 | 1620 | EXPORT_SYMBOL_GPL(snd_soc_dapm_sync); |
2b97eabc | 1621 | |
ce6120cc | 1622 | static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm, |
215edda3 | 1623 | const struct snd_soc_dapm_route *route) |
2b97eabc RP |
1624 | { |
1625 | struct snd_soc_dapm_path *path; | |
1626 | struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w; | |
97c866de | 1627 | struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL; |
ead9b919 | 1628 | const char *sink; |
215edda3 | 1629 | const char *control = route->control; |
ead9b919 JN |
1630 | const char *source; |
1631 | char prefixed_sink[80]; | |
1632 | char prefixed_source[80]; | |
2b97eabc RP |
1633 | int ret = 0; |
1634 | ||
88e8b9a8 | 1635 | if (dapm->codec && dapm->codec->name_prefix) { |
ead9b919 JN |
1636 | snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s", |
1637 | dapm->codec->name_prefix, route->sink); | |
1638 | sink = prefixed_sink; | |
1639 | snprintf(prefixed_source, sizeof(prefixed_source), "%s %s", | |
1640 | dapm->codec->name_prefix, route->source); | |
1641 | source = prefixed_source; | |
1642 | } else { | |
1643 | sink = route->sink; | |
1644 | source = route->source; | |
1645 | } | |
1646 | ||
97c866de JN |
1647 | /* |
1648 | * find src and dest widgets over all widgets but favor a widget from | |
1649 | * current DAPM context | |
1650 | */ | |
1651 | list_for_each_entry(w, &dapm->card->widgets, list) { | |
2b97eabc | 1652 | if (!wsink && !(strcmp(w->name, sink))) { |
97c866de JN |
1653 | wtsink = w; |
1654 | if (w->dapm == dapm) | |
1655 | wsink = w; | |
2b97eabc RP |
1656 | continue; |
1657 | } | |
1658 | if (!wsource && !(strcmp(w->name, source))) { | |
97c866de JN |
1659 | wtsource = w; |
1660 | if (w->dapm == dapm) | |
1661 | wsource = w; | |
2b97eabc RP |
1662 | } |
1663 | } | |
97c866de JN |
1664 | /* use widget from another DAPM context if not found from this */ |
1665 | if (!wsink) | |
1666 | wsink = wtsink; | |
1667 | if (!wsource) | |
1668 | wsource = wtsource; | |
2b97eabc RP |
1669 | |
1670 | if (wsource == NULL || wsink == NULL) | |
1671 | return -ENODEV; | |
1672 | ||
1673 | path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL); | |
1674 | if (!path) | |
1675 | return -ENOMEM; | |
1676 | ||
1677 | path->source = wsource; | |
1678 | path->sink = wsink; | |
215edda3 | 1679 | path->connected = route->connected; |
2b97eabc RP |
1680 | INIT_LIST_HEAD(&path->list); |
1681 | INIT_LIST_HEAD(&path->list_source); | |
1682 | INIT_LIST_HEAD(&path->list_sink); | |
1683 | ||
1684 | /* check for external widgets */ | |
1685 | if (wsink->id == snd_soc_dapm_input) { | |
1686 | if (wsource->id == snd_soc_dapm_micbias || | |
1687 | wsource->id == snd_soc_dapm_mic || | |
087d53ab RC |
1688 | wsource->id == snd_soc_dapm_line || |
1689 | wsource->id == snd_soc_dapm_output) | |
2b97eabc RP |
1690 | wsink->ext = 1; |
1691 | } | |
1692 | if (wsource->id == snd_soc_dapm_output) { | |
1693 | if (wsink->id == snd_soc_dapm_spk || | |
1694 | wsink->id == snd_soc_dapm_hp || | |
1e39221e SF |
1695 | wsink->id == snd_soc_dapm_line || |
1696 | wsink->id == snd_soc_dapm_input) | |
2b97eabc RP |
1697 | wsource->ext = 1; |
1698 | } | |
1699 | ||
1700 | /* connect static paths */ | |
1701 | if (control == NULL) { | |
8ddab3f5 | 1702 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
1703 | list_add(&path->list_sink, &wsink->sources); |
1704 | list_add(&path->list_source, &wsource->sinks); | |
1705 | path->connect = 1; | |
1706 | return 0; | |
1707 | } | |
1708 | ||
1709 | /* connect dynamic paths */ | |
dc2bea61 | 1710 | switch (wsink->id) { |
2b97eabc RP |
1711 | case snd_soc_dapm_adc: |
1712 | case snd_soc_dapm_dac: | |
1713 | case snd_soc_dapm_pga: | |
d88429a6 | 1714 | case snd_soc_dapm_out_drv: |
2b97eabc RP |
1715 | case snd_soc_dapm_input: |
1716 | case snd_soc_dapm_output: | |
1717 | case snd_soc_dapm_micbias: | |
1718 | case snd_soc_dapm_vmid: | |
1719 | case snd_soc_dapm_pre: | |
1720 | case snd_soc_dapm_post: | |
246d0a17 | 1721 | case snd_soc_dapm_supply: |
010ff262 MB |
1722 | case snd_soc_dapm_aif_in: |
1723 | case snd_soc_dapm_aif_out: | |
8ddab3f5 | 1724 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
1725 | list_add(&path->list_sink, &wsink->sources); |
1726 | list_add(&path->list_source, &wsource->sinks); | |
1727 | path->connect = 1; | |
1728 | return 0; | |
1729 | case snd_soc_dapm_mux: | |
24ff33ac | 1730 | case snd_soc_dapm_virt_mux: |
74155556 | 1731 | case snd_soc_dapm_value_mux: |
ce6120cc | 1732 | ret = dapm_connect_mux(dapm, wsource, wsink, path, control, |
82cfecdc | 1733 | &wsink->kcontrol_news[0]); |
2b97eabc RP |
1734 | if (ret != 0) |
1735 | goto err; | |
1736 | break; | |
1737 | case snd_soc_dapm_switch: | |
1738 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1739 | case snd_soc_dapm_mixer_named_ctl: |
ce6120cc | 1740 | ret = dapm_connect_mixer(dapm, wsource, wsink, path, control); |
2b97eabc RP |
1741 | if (ret != 0) |
1742 | goto err; | |
1743 | break; | |
1744 | case snd_soc_dapm_hp: | |
1745 | case snd_soc_dapm_mic: | |
1746 | case snd_soc_dapm_line: | |
1747 | case snd_soc_dapm_spk: | |
8ddab3f5 | 1748 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
1749 | list_add(&path->list_sink, &wsink->sources); |
1750 | list_add(&path->list_source, &wsource->sinks); | |
1751 | path->connect = 0; | |
1752 | return 0; | |
1753 | } | |
1754 | return 0; | |
1755 | ||
1756 | err: | |
f7d41ae8 JN |
1757 | dev_warn(dapm->dev, "asoc: no dapm match for %s --> %s --> %s\n", |
1758 | source, control, sink); | |
2b97eabc RP |
1759 | kfree(path); |
1760 | return ret; | |
1761 | } | |
105f1c28 | 1762 | |
105f1c28 MB |
1763 | /** |
1764 | * snd_soc_dapm_add_routes - Add routes between DAPM widgets | |
ce6120cc | 1765 | * @dapm: DAPM context |
105f1c28 MB |
1766 | * @route: audio routes |
1767 | * @num: number of routes | |
1768 | * | |
1769 | * Connects 2 dapm widgets together via a named audio path. The sink is | |
1770 | * the widget receiving the audio signal, whilst the source is the sender | |
1771 | * of the audio signal. | |
1772 | * | |
1773 | * Returns 0 for success else error. On error all resources can be freed | |
1774 | * with a call to snd_soc_card_free(). | |
1775 | */ | |
ce6120cc | 1776 | int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm, |
105f1c28 MB |
1777 | const struct snd_soc_dapm_route *route, int num) |
1778 | { | |
1779 | int i, ret; | |
1780 | ||
1781 | for (i = 0; i < num; i++) { | |
ce6120cc | 1782 | ret = snd_soc_dapm_add_route(dapm, route); |
105f1c28 | 1783 | if (ret < 0) { |
f7d41ae8 JN |
1784 | dev_err(dapm->dev, "Failed to add route %s->%s\n", |
1785 | route->source, route->sink); | |
105f1c28 MB |
1786 | return ret; |
1787 | } | |
1788 | route++; | |
1789 | } | |
1790 | ||
1791 | return 0; | |
1792 | } | |
1793 | EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes); | |
1794 | ||
2b97eabc RP |
1795 | /** |
1796 | * snd_soc_dapm_new_widgets - add new dapm widgets | |
ce6120cc | 1797 | * @dapm: DAPM context |
2b97eabc RP |
1798 | * |
1799 | * Checks the codec for any new dapm widgets and creates them if found. | |
1800 | * | |
1801 | * Returns 0 for success. | |
1802 | */ | |
ce6120cc | 1803 | int snd_soc_dapm_new_widgets(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
1804 | { |
1805 | struct snd_soc_dapm_widget *w; | |
b66a70d5 | 1806 | unsigned int val; |
2b97eabc | 1807 | |
97c866de | 1808 | list_for_each_entry(w, &dapm->card->widgets, list) |
2b97eabc RP |
1809 | { |
1810 | if (w->new) | |
1811 | continue; | |
1812 | ||
fad59888 SW |
1813 | if (w->num_kcontrols) { |
1814 | w->kcontrols = kzalloc(w->num_kcontrols * | |
1815 | sizeof(struct snd_kcontrol *), | |
1816 | GFP_KERNEL); | |
1817 | if (!w->kcontrols) | |
1818 | return -ENOMEM; | |
1819 | } | |
1820 | ||
2b97eabc RP |
1821 | switch(w->id) { |
1822 | case snd_soc_dapm_switch: | |
1823 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1824 | case snd_soc_dapm_mixer_named_ctl: |
b75576d7 | 1825 | w->power_check = dapm_generic_check_power; |
ce6120cc | 1826 | dapm_new_mixer(dapm, w); |
2b97eabc RP |
1827 | break; |
1828 | case snd_soc_dapm_mux: | |
24ff33ac | 1829 | case snd_soc_dapm_virt_mux: |
2e72f8e3 | 1830 | case snd_soc_dapm_value_mux: |
b75576d7 | 1831 | w->power_check = dapm_generic_check_power; |
ce6120cc | 1832 | dapm_new_mux(dapm, w); |
2b97eabc RP |
1833 | break; |
1834 | case snd_soc_dapm_adc: | |
010ff262 | 1835 | case snd_soc_dapm_aif_out: |
b75576d7 MB |
1836 | w->power_check = dapm_adc_check_power; |
1837 | break; | |
2b97eabc | 1838 | case snd_soc_dapm_dac: |
010ff262 | 1839 | case snd_soc_dapm_aif_in: |
b75576d7 MB |
1840 | w->power_check = dapm_dac_check_power; |
1841 | break; | |
2b97eabc | 1842 | case snd_soc_dapm_pga: |
d88429a6 | 1843 | case snd_soc_dapm_out_drv: |
b75576d7 | 1844 | w->power_check = dapm_generic_check_power; |
ce6120cc | 1845 | dapm_new_pga(dapm, w); |
2b97eabc RP |
1846 | break; |
1847 | case snd_soc_dapm_input: | |
1848 | case snd_soc_dapm_output: | |
1849 | case snd_soc_dapm_micbias: | |
1850 | case snd_soc_dapm_spk: | |
1851 | case snd_soc_dapm_hp: | |
1852 | case snd_soc_dapm_mic: | |
1853 | case snd_soc_dapm_line: | |
b75576d7 MB |
1854 | w->power_check = dapm_generic_check_power; |
1855 | break; | |
246d0a17 MB |
1856 | case snd_soc_dapm_supply: |
1857 | w->power_check = dapm_supply_check_power; | |
2b97eabc RP |
1858 | case snd_soc_dapm_vmid: |
1859 | case snd_soc_dapm_pre: | |
1860 | case snd_soc_dapm_post: | |
1861 | break; | |
1862 | } | |
b66a70d5 MB |
1863 | |
1864 | /* Read the initial power state from the device */ | |
1865 | if (w->reg >= 0) { | |
1866 | val = snd_soc_read(w->codec, w->reg); | |
1867 | val &= 1 << w->shift; | |
1868 | if (w->invert) | |
1869 | val = !val; | |
1870 | ||
1871 | if (val) | |
1872 | w->power = 1; | |
1873 | } | |
1874 | ||
2b97eabc | 1875 | w->new = 1; |
d5d1e0be LPC |
1876 | |
1877 | dapm_debugfs_add_widget(w); | |
2b97eabc RP |
1878 | } |
1879 | ||
ce6120cc | 1880 | dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc RP |
1881 | return 0; |
1882 | } | |
1883 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets); | |
1884 | ||
1885 | /** | |
1886 | * snd_soc_dapm_get_volsw - dapm mixer get callback | |
1887 | * @kcontrol: mixer control | |
ac11a2b3 | 1888 | * @ucontrol: control element information |
2b97eabc RP |
1889 | * |
1890 | * Callback to get the value of a dapm mixer control. | |
1891 | * | |
1892 | * Returns 0 for success. | |
1893 | */ | |
1894 | int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol, | |
1895 | struct snd_ctl_elem_value *ucontrol) | |
1896 | { | |
fafd2176 SW |
1897 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
1898 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
4eaa9819 JS |
1899 | struct soc_mixer_control *mc = |
1900 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
1901 | unsigned int reg = mc->reg; |
1902 | unsigned int shift = mc->shift; | |
1903 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1904 | int max = mc->max; |
815ecf8d JS |
1905 | unsigned int invert = mc->invert; |
1906 | unsigned int mask = (1 << fls(max)) - 1; | |
2b97eabc | 1907 | |
2b97eabc RP |
1908 | ucontrol->value.integer.value[0] = |
1909 | (snd_soc_read(widget->codec, reg) >> shift) & mask; | |
1910 | if (shift != rshift) | |
1911 | ucontrol->value.integer.value[1] = | |
1912 | (snd_soc_read(widget->codec, reg) >> rshift) & mask; | |
1913 | if (invert) { | |
1914 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1915 | max - ucontrol->value.integer.value[0]; |
2b97eabc RP |
1916 | if (shift != rshift) |
1917 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 1918 | max - ucontrol->value.integer.value[1]; |
2b97eabc RP |
1919 | } |
1920 | ||
1921 | return 0; | |
1922 | } | |
1923 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw); | |
1924 | ||
1925 | /** | |
1926 | * snd_soc_dapm_put_volsw - dapm mixer set callback | |
1927 | * @kcontrol: mixer control | |
ac11a2b3 | 1928 | * @ucontrol: control element information |
2b97eabc RP |
1929 | * |
1930 | * Callback to set the value of a dapm mixer control. | |
1931 | * | |
1932 | * Returns 0 for success. | |
1933 | */ | |
1934 | int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, | |
1935 | struct snd_ctl_elem_value *ucontrol) | |
1936 | { | |
fafd2176 SW |
1937 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
1938 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
1939 | struct snd_soc_codec *codec = widget->codec; | |
4eaa9819 JS |
1940 | struct soc_mixer_control *mc = |
1941 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
1942 | unsigned int reg = mc->reg; |
1943 | unsigned int shift = mc->shift; | |
4eaa9819 | 1944 | int max = mc->max; |
815ecf8d JS |
1945 | unsigned int mask = (1 << fls(max)) - 1; |
1946 | unsigned int invert = mc->invert; | |
e9cf7049 | 1947 | unsigned int val; |
97404f2e MB |
1948 | int connect, change; |
1949 | struct snd_soc_dapm_update update; | |
fafd2176 | 1950 | int wi; |
2b97eabc RP |
1951 | |
1952 | val = (ucontrol->value.integer.value[0] & mask); | |
1953 | ||
1954 | if (invert) | |
a7a4ac86 | 1955 | val = max - val; |
e9cf7049 | 1956 | mask = mask << shift; |
2b97eabc | 1957 | val = val << shift; |
2b97eabc | 1958 | |
fafd2176 SW |
1959 | if (val) |
1960 | /* new connection */ | |
1961 | connect = invert ? 0 : 1; | |
1962 | else | |
1963 | /* old connection must be powered down */ | |
1964 | connect = invert ? 1 : 0; | |
1965 | ||
1966 | mutex_lock(&codec->mutex); | |
2b97eabc | 1967 | |
e9cf7049 | 1968 | change = snd_soc_test_bits(widget->codec, reg, mask, val); |
97404f2e | 1969 | if (change) { |
fafd2176 SW |
1970 | for (wi = 0; wi < wlist->num_widgets; wi++) { |
1971 | widget = wlist->widgets[wi]; | |
283375ce | 1972 | |
fafd2176 | 1973 | widget->value = val; |
97404f2e | 1974 | |
fafd2176 SW |
1975 | update.kcontrol = kcontrol; |
1976 | update.widget = widget; | |
1977 | update.reg = reg; | |
1978 | update.mask = mask; | |
1979 | update.val = val; | |
1980 | widget->dapm->update = &update; | |
97404f2e | 1981 | |
fafd2176 SW |
1982 | dapm_mixer_update_power(widget, kcontrol, connect); |
1983 | ||
1984 | widget->dapm->update = NULL; | |
1985 | } | |
283375ce MB |
1986 | } |
1987 | ||
fafd2176 | 1988 | mutex_unlock(&codec->mutex); |
97404f2e | 1989 | return 0; |
2b97eabc RP |
1990 | } |
1991 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw); | |
1992 | ||
1993 | /** | |
1994 | * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback | |
1995 | * @kcontrol: mixer control | |
ac11a2b3 | 1996 | * @ucontrol: control element information |
2b97eabc RP |
1997 | * |
1998 | * Callback to get the value of a dapm enumerated double mixer control. | |
1999 | * | |
2000 | * Returns 0 for success. | |
2001 | */ | |
2002 | int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol, | |
2003 | struct snd_ctl_elem_value *ucontrol) | |
2004 | { | |
fafd2176 SW |
2005 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2006 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2b97eabc | 2007 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f | 2008 | unsigned int val, bitmask; |
2b97eabc | 2009 | |
f8ba0b7b | 2010 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
2011 | ; |
2012 | val = snd_soc_read(widget->codec, e->reg); | |
2013 | ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1); | |
2014 | if (e->shift_l != e->shift_r) | |
2015 | ucontrol->value.enumerated.item[1] = | |
2016 | (val >> e->shift_r) & (bitmask - 1); | |
2017 | ||
2018 | return 0; | |
2019 | } | |
2020 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double); | |
2021 | ||
2022 | /** | |
2023 | * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback | |
2024 | * @kcontrol: mixer control | |
ac11a2b3 | 2025 | * @ucontrol: control element information |
2b97eabc RP |
2026 | * |
2027 | * Callback to set the value of a dapm enumerated double mixer control. | |
2028 | * | |
2029 | * Returns 0 for success. | |
2030 | */ | |
2031 | int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, | |
2032 | struct snd_ctl_elem_value *ucontrol) | |
2033 | { | |
fafd2176 SW |
2034 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2035 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2036 | struct snd_soc_codec *codec = widget->codec; | |
2b97eabc | 2037 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
3a65577d | 2038 | unsigned int val, mux, change; |
46f5822f | 2039 | unsigned int mask, bitmask; |
97404f2e | 2040 | struct snd_soc_dapm_update update; |
fafd2176 | 2041 | int wi; |
2b97eabc | 2042 | |
f8ba0b7b | 2043 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc | 2044 | ; |
f8ba0b7b | 2045 | if (ucontrol->value.enumerated.item[0] > e->max - 1) |
2b97eabc RP |
2046 | return -EINVAL; |
2047 | mux = ucontrol->value.enumerated.item[0]; | |
2048 | val = mux << e->shift_l; | |
2049 | mask = (bitmask - 1) << e->shift_l; | |
2050 | if (e->shift_l != e->shift_r) { | |
f8ba0b7b | 2051 | if (ucontrol->value.enumerated.item[1] > e->max - 1) |
2b97eabc RP |
2052 | return -EINVAL; |
2053 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
2054 | mask |= (bitmask - 1) << e->shift_r; | |
2055 | } | |
2056 | ||
fafd2176 SW |
2057 | mutex_lock(&codec->mutex); |
2058 | ||
3a65577d | 2059 | change = snd_soc_test_bits(widget->codec, e->reg, mask, val); |
fafd2176 SW |
2060 | if (change) { |
2061 | for (wi = 0; wi < wlist->num_widgets; wi++) { | |
2062 | widget = wlist->widgets[wi]; | |
2063 | ||
2064 | widget->value = val; | |
1642e3d4 | 2065 | |
fafd2176 SW |
2066 | update.kcontrol = kcontrol; |
2067 | update.widget = widget; | |
2068 | update.reg = e->reg; | |
2069 | update.mask = mask; | |
2070 | update.val = val; | |
2071 | widget->dapm->update = &update; | |
1642e3d4 | 2072 | |
fafd2176 | 2073 | dapm_mux_update_power(widget, kcontrol, change, mux, e); |
1642e3d4 | 2074 | |
fafd2176 SW |
2075 | widget->dapm->update = NULL; |
2076 | } | |
2077 | } | |
2b97eabc | 2078 | |
fafd2176 | 2079 | mutex_unlock(&codec->mutex); |
97404f2e | 2080 | return change; |
2b97eabc RP |
2081 | } |
2082 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double); | |
2083 | ||
d2b247a8 MB |
2084 | /** |
2085 | * snd_soc_dapm_get_enum_virt - Get virtual DAPM mux | |
2086 | * @kcontrol: mixer control | |
2087 | * @ucontrol: control element information | |
2088 | * | |
2089 | * Returns 0 for success. | |
2090 | */ | |
2091 | int snd_soc_dapm_get_enum_virt(struct snd_kcontrol *kcontrol, | |
2092 | struct snd_ctl_elem_value *ucontrol) | |
2093 | { | |
fafd2176 SW |
2094 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2095 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
d2b247a8 MB |
2096 | |
2097 | ucontrol->value.enumerated.item[0] = widget->value; | |
2098 | ||
2099 | return 0; | |
2100 | } | |
2101 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_virt); | |
2102 | ||
2103 | /** | |
2104 | * snd_soc_dapm_put_enum_virt - Set virtual DAPM mux | |
2105 | * @kcontrol: mixer control | |
2106 | * @ucontrol: control element information | |
2107 | * | |
2108 | * Returns 0 for success. | |
2109 | */ | |
2110 | int snd_soc_dapm_put_enum_virt(struct snd_kcontrol *kcontrol, | |
2111 | struct snd_ctl_elem_value *ucontrol) | |
2112 | { | |
fafd2176 SW |
2113 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2114 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2115 | struct snd_soc_codec *codec = widget->codec; | |
d2b247a8 MB |
2116 | struct soc_enum *e = |
2117 | (struct soc_enum *)kcontrol->private_value; | |
2118 | int change; | |
2119 | int ret = 0; | |
fafd2176 | 2120 | int wi; |
d2b247a8 MB |
2121 | |
2122 | if (ucontrol->value.enumerated.item[0] >= e->max) | |
2123 | return -EINVAL; | |
2124 | ||
fafd2176 | 2125 | mutex_lock(&codec->mutex); |
d2b247a8 MB |
2126 | |
2127 | change = widget->value != ucontrol->value.enumerated.item[0]; | |
fafd2176 SW |
2128 | if (change) { |
2129 | for (wi = 0; wi < wlist->num_widgets; wi++) { | |
2130 | widget = wlist->widgets[wi]; | |
2131 | ||
2132 | widget->value = ucontrol->value.enumerated.item[0]; | |
2133 | ||
2134 | dapm_mux_update_power(widget, kcontrol, change, | |
2135 | widget->value, e); | |
2136 | } | |
2137 | } | |
d2b247a8 | 2138 | |
fafd2176 | 2139 | mutex_unlock(&codec->mutex); |
d2b247a8 MB |
2140 | return ret; |
2141 | } | |
2142 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt); | |
2143 | ||
2e72f8e3 PU |
2144 | /** |
2145 | * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get | |
2146 | * callback | |
2147 | * @kcontrol: mixer control | |
2148 | * @ucontrol: control element information | |
2149 | * | |
2150 | * Callback to get the value of a dapm semi enumerated double mixer control. | |
2151 | * | |
2152 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
2153 | * used for handling bitfield coded enumeration for example. | |
2154 | * | |
2155 | * Returns 0 for success. | |
2156 | */ | |
2157 | int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol *kcontrol, | |
2158 | struct snd_ctl_elem_value *ucontrol) | |
2159 | { | |
fafd2176 SW |
2160 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2161 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
74155556 | 2162 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f | 2163 | unsigned int reg_val, val, mux; |
2e72f8e3 PU |
2164 | |
2165 | reg_val = snd_soc_read(widget->codec, e->reg); | |
2166 | val = (reg_val >> e->shift_l) & e->mask; | |
2167 | for (mux = 0; mux < e->max; mux++) { | |
2168 | if (val == e->values[mux]) | |
2169 | break; | |
2170 | } | |
2171 | ucontrol->value.enumerated.item[0] = mux; | |
2172 | if (e->shift_l != e->shift_r) { | |
2173 | val = (reg_val >> e->shift_r) & e->mask; | |
2174 | for (mux = 0; mux < e->max; mux++) { | |
2175 | if (val == e->values[mux]) | |
2176 | break; | |
2177 | } | |
2178 | ucontrol->value.enumerated.item[1] = mux; | |
2179 | } | |
2180 | ||
2181 | return 0; | |
2182 | } | |
2183 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double); | |
2184 | ||
2185 | /** | |
2186 | * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set | |
2187 | * callback | |
2188 | * @kcontrol: mixer control | |
2189 | * @ucontrol: control element information | |
2190 | * | |
2191 | * Callback to set the value of a dapm semi enumerated double mixer control. | |
2192 | * | |
2193 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
2194 | * used for handling bitfield coded enumeration for example. | |
2195 | * | |
2196 | * Returns 0 for success. | |
2197 | */ | |
2198 | int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol, | |
2199 | struct snd_ctl_elem_value *ucontrol) | |
2200 | { | |
fafd2176 SW |
2201 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2202 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2203 | struct snd_soc_codec *codec = widget->codec; | |
74155556 | 2204 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
3a65577d | 2205 | unsigned int val, mux, change; |
46f5822f | 2206 | unsigned int mask; |
97404f2e | 2207 | struct snd_soc_dapm_update update; |
fafd2176 | 2208 | int wi; |
2e72f8e3 PU |
2209 | |
2210 | if (ucontrol->value.enumerated.item[0] > e->max - 1) | |
2211 | return -EINVAL; | |
2212 | mux = ucontrol->value.enumerated.item[0]; | |
2213 | val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l; | |
2214 | mask = e->mask << e->shift_l; | |
2215 | if (e->shift_l != e->shift_r) { | |
2216 | if (ucontrol->value.enumerated.item[1] > e->max - 1) | |
2217 | return -EINVAL; | |
2218 | val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r; | |
2219 | mask |= e->mask << e->shift_r; | |
2220 | } | |
2221 | ||
fafd2176 SW |
2222 | mutex_lock(&codec->mutex); |
2223 | ||
3a65577d | 2224 | change = snd_soc_test_bits(widget->codec, e->reg, mask, val); |
fafd2176 SW |
2225 | if (change) { |
2226 | for (wi = 0; wi < wlist->num_widgets; wi++) { | |
2227 | widget = wlist->widgets[wi]; | |
1642e3d4 | 2228 | |
fafd2176 | 2229 | widget->value = val; |
1642e3d4 | 2230 | |
fafd2176 SW |
2231 | update.kcontrol = kcontrol; |
2232 | update.widget = widget; | |
2233 | update.reg = e->reg; | |
2234 | update.mask = mask; | |
2235 | update.val = val; | |
2236 | widget->dapm->update = &update; | |
1642e3d4 | 2237 | |
fafd2176 SW |
2238 | dapm_mux_update_power(widget, kcontrol, change, mux, e); |
2239 | ||
2240 | widget->dapm->update = NULL; | |
2241 | } | |
2242 | } | |
2e72f8e3 | 2243 | |
fafd2176 | 2244 | mutex_unlock(&codec->mutex); |
97404f2e | 2245 | return change; |
2e72f8e3 PU |
2246 | } |
2247 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double); | |
2248 | ||
8b37dbd2 MB |
2249 | /** |
2250 | * snd_soc_dapm_info_pin_switch - Info for a pin switch | |
2251 | * | |
2252 | * @kcontrol: mixer control | |
2253 | * @uinfo: control element information | |
2254 | * | |
2255 | * Callback to provide information about a pin switch control. | |
2256 | */ | |
2257 | int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol, | |
2258 | struct snd_ctl_elem_info *uinfo) | |
2259 | { | |
2260 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
2261 | uinfo->count = 1; | |
2262 | uinfo->value.integer.min = 0; | |
2263 | uinfo->value.integer.max = 1; | |
2264 | ||
2265 | return 0; | |
2266 | } | |
2267 | EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch); | |
2268 | ||
2269 | /** | |
2270 | * snd_soc_dapm_get_pin_switch - Get information for a pin switch | |
2271 | * | |
2272 | * @kcontrol: mixer control | |
2273 | * @ucontrol: Value | |
2274 | */ | |
2275 | int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol, | |
2276 | struct snd_ctl_elem_value *ucontrol) | |
2277 | { | |
2278 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
2279 | const char *pin = (const char *)kcontrol->private_value; | |
2280 | ||
2281 | mutex_lock(&codec->mutex); | |
2282 | ||
2283 | ucontrol->value.integer.value[0] = | |
ce6120cc | 2284 | snd_soc_dapm_get_pin_status(&codec->dapm, pin); |
8b37dbd2 MB |
2285 | |
2286 | mutex_unlock(&codec->mutex); | |
2287 | ||
2288 | return 0; | |
2289 | } | |
2290 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch); | |
2291 | ||
2292 | /** | |
2293 | * snd_soc_dapm_put_pin_switch - Set information for a pin switch | |
2294 | * | |
2295 | * @kcontrol: mixer control | |
2296 | * @ucontrol: Value | |
2297 | */ | |
2298 | int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol, | |
2299 | struct snd_ctl_elem_value *ucontrol) | |
2300 | { | |
2301 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
2302 | const char *pin = (const char *)kcontrol->private_value; | |
2303 | ||
2304 | mutex_lock(&codec->mutex); | |
2305 | ||
2306 | if (ucontrol->value.integer.value[0]) | |
ce6120cc | 2307 | snd_soc_dapm_enable_pin(&codec->dapm, pin); |
8b37dbd2 | 2308 | else |
ce6120cc | 2309 | snd_soc_dapm_disable_pin(&codec->dapm, pin); |
8b37dbd2 | 2310 | |
ce6120cc | 2311 | snd_soc_dapm_sync(&codec->dapm); |
8b37dbd2 MB |
2312 | |
2313 | mutex_unlock(&codec->mutex); | |
2314 | ||
2315 | return 0; | |
2316 | } | |
2317 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch); | |
2318 | ||
2b97eabc RP |
2319 | /** |
2320 | * snd_soc_dapm_new_control - create new dapm control | |
ce6120cc | 2321 | * @dapm: DAPM context |
2b97eabc RP |
2322 | * @widget: widget template |
2323 | * | |
2324 | * Creates a new dapm control based upon the template. | |
2325 | * | |
2326 | * Returns 0 for success else error. | |
2327 | */ | |
ce6120cc | 2328 | int snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
2329 | const struct snd_soc_dapm_widget *widget) |
2330 | { | |
2331 | struct snd_soc_dapm_widget *w; | |
ead9b919 | 2332 | size_t name_len; |
2b97eabc RP |
2333 | |
2334 | if ((w = dapm_cnew_widget(widget)) == NULL) | |
2335 | return -ENOMEM; | |
2336 | ||
ead9b919 | 2337 | name_len = strlen(widget->name) + 1; |
88e8b9a8 | 2338 | if (dapm->codec && dapm->codec->name_prefix) |
ead9b919 JN |
2339 | name_len += 1 + strlen(dapm->codec->name_prefix); |
2340 | w->name = kmalloc(name_len, GFP_KERNEL); | |
2341 | if (w->name == NULL) { | |
2342 | kfree(w); | |
2343 | return -ENOMEM; | |
2344 | } | |
88e8b9a8 | 2345 | if (dapm->codec && dapm->codec->name_prefix) |
ead9b919 JN |
2346 | snprintf(w->name, name_len, "%s %s", |
2347 | dapm->codec->name_prefix, widget->name); | |
2348 | else | |
2349 | snprintf(w->name, name_len, "%s", widget->name); | |
2350 | ||
97c866de | 2351 | dapm->n_widgets++; |
ce6120cc LG |
2352 | w->dapm = dapm; |
2353 | w->codec = dapm->codec; | |
2b97eabc RP |
2354 | INIT_LIST_HEAD(&w->sources); |
2355 | INIT_LIST_HEAD(&w->sinks); | |
2356 | INIT_LIST_HEAD(&w->list); | |
97c866de | 2357 | list_add(&w->list, &dapm->card->widgets); |
2b97eabc RP |
2358 | |
2359 | /* machine layer set ups unconnected pins and insertions */ | |
2360 | w->connected = 1; | |
2361 | return 0; | |
2362 | } | |
2363 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control); | |
2364 | ||
4ba1327a MB |
2365 | /** |
2366 | * snd_soc_dapm_new_controls - create new dapm controls | |
ce6120cc | 2367 | * @dapm: DAPM context |
4ba1327a MB |
2368 | * @widget: widget array |
2369 | * @num: number of widgets | |
2370 | * | |
2371 | * Creates new DAPM controls based upon the templates. | |
2372 | * | |
2373 | * Returns 0 for success else error. | |
2374 | */ | |
ce6120cc | 2375 | int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm, |
4ba1327a MB |
2376 | const struct snd_soc_dapm_widget *widget, |
2377 | int num) | |
2378 | { | |
2379 | int i, ret; | |
2380 | ||
2381 | for (i = 0; i < num; i++) { | |
ce6120cc | 2382 | ret = snd_soc_dapm_new_control(dapm, widget); |
b8b33cb5 | 2383 | if (ret < 0) { |
f7d41ae8 JN |
2384 | dev_err(dapm->dev, |
2385 | "ASoC: Failed to create DAPM control %s: %d\n", | |
2386 | widget->name, ret); | |
4ba1327a | 2387 | return ret; |
b8b33cb5 | 2388 | } |
4ba1327a MB |
2389 | widget++; |
2390 | } | |
2391 | return 0; | |
2392 | } | |
2393 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls); | |
2394 | ||
ce6120cc | 2395 | static void soc_dapm_stream_event(struct snd_soc_dapm_context *dapm, |
f0fba2ad | 2396 | const char *stream, int event) |
2b97eabc RP |
2397 | { |
2398 | struct snd_soc_dapm_widget *w; | |
2399 | ||
97c866de | 2400 | list_for_each_entry(w, &dapm->card->widgets, list) |
2b97eabc | 2401 | { |
97c866de | 2402 | if (!w->sname || w->dapm != dapm) |
2b97eabc | 2403 | continue; |
f7d41ae8 JN |
2404 | dev_dbg(w->dapm->dev, "widget %s\n %s stream %s event %d\n", |
2405 | w->name, w->sname, stream, event); | |
2b97eabc RP |
2406 | if (strstr(w->sname, stream)) { |
2407 | switch(event) { | |
2408 | case SND_SOC_DAPM_STREAM_START: | |
2409 | w->active = 1; | |
2410 | break; | |
2411 | case SND_SOC_DAPM_STREAM_STOP: | |
2412 | w->active = 0; | |
2413 | break; | |
2414 | case SND_SOC_DAPM_STREAM_SUSPEND: | |
2b97eabc | 2415 | case SND_SOC_DAPM_STREAM_RESUME: |
2b97eabc | 2416 | case SND_SOC_DAPM_STREAM_PAUSE_PUSH: |
2b97eabc RP |
2417 | case SND_SOC_DAPM_STREAM_PAUSE_RELEASE: |
2418 | break; | |
2419 | } | |
2420 | } | |
2421 | } | |
2b97eabc | 2422 | |
ce6120cc LG |
2423 | dapm_power_widgets(dapm, event); |
2424 | } | |
2425 | ||
2426 | /** | |
2427 | * snd_soc_dapm_stream_event - send a stream event to the dapm core | |
2428 | * @rtd: PCM runtime data | |
2429 | * @stream: stream name | |
2430 | * @event: stream event | |
2431 | * | |
2432 | * Sends a stream event to the dapm core. The core then makes any | |
2433 | * necessary widget power changes. | |
2434 | * | |
2435 | * Returns 0 for success else error. | |
2436 | */ | |
2437 | int snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, | |
2438 | const char *stream, int event) | |
2439 | { | |
2440 | struct snd_soc_codec *codec = rtd->codec; | |
2441 | ||
2442 | if (stream == NULL) | |
2443 | return 0; | |
2444 | ||
2445 | mutex_lock(&codec->mutex); | |
2446 | soc_dapm_stream_event(&codec->dapm, stream, event); | |
8e8b2d67 | 2447 | mutex_unlock(&codec->mutex); |
2b97eabc RP |
2448 | return 0; |
2449 | } | |
2b97eabc RP |
2450 | |
2451 | /** | |
a5302181 | 2452 | * snd_soc_dapm_enable_pin - enable pin. |
ce6120cc | 2453 | * @dapm: DAPM context |
a5302181 | 2454 | * @pin: pin name |
2b97eabc | 2455 | * |
74b8f955 | 2456 | * Enables input/output pin and its parents or children widgets iff there is |
a5302181 LG |
2457 | * a valid audio route and active audio stream. |
2458 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2459 | * do any widget power switching. | |
2b97eabc | 2460 | */ |
ce6120cc | 2461 | int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin) |
2b97eabc | 2462 | { |
ce6120cc | 2463 | return snd_soc_dapm_set_pin(dapm, pin, 1); |
a5302181 LG |
2464 | } |
2465 | EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin); | |
2b97eabc | 2466 | |
da34183e MB |
2467 | /** |
2468 | * snd_soc_dapm_force_enable_pin - force a pin to be enabled | |
ce6120cc | 2469 | * @dapm: DAPM context |
da34183e MB |
2470 | * @pin: pin name |
2471 | * | |
2472 | * Enables input/output pin regardless of any other state. This is | |
2473 | * intended for use with microphone bias supplies used in microphone | |
2474 | * jack detection. | |
2475 | * | |
2476 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2477 | * do any widget power switching. | |
2478 | */ | |
ce6120cc LG |
2479 | int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm, |
2480 | const char *pin) | |
da34183e | 2481 | { |
91a5fca4 | 2482 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); |
da34183e | 2483 | |
91a5fca4 LPC |
2484 | if (!w) { |
2485 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); | |
2486 | return -EINVAL; | |
0d86733c MB |
2487 | } |
2488 | ||
91a5fca4 LPC |
2489 | dev_dbg(w->dapm->dev, "dapm: force enable pin %s\n", pin); |
2490 | w->connected = 1; | |
2491 | w->force = 1; | |
da34183e | 2492 | |
91a5fca4 | 2493 | return 0; |
da34183e MB |
2494 | } |
2495 | EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin); | |
2496 | ||
a5302181 LG |
2497 | /** |
2498 | * snd_soc_dapm_disable_pin - disable pin. | |
ce6120cc | 2499 | * @dapm: DAPM context |
a5302181 LG |
2500 | * @pin: pin name |
2501 | * | |
74b8f955 | 2502 | * Disables input/output pin and its parents or children widgets. |
a5302181 LG |
2503 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to |
2504 | * do any widget power switching. | |
2505 | */ | |
ce6120cc LG |
2506 | int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm, |
2507 | const char *pin) | |
a5302181 | 2508 | { |
ce6120cc | 2509 | return snd_soc_dapm_set_pin(dapm, pin, 0); |
2b97eabc | 2510 | } |
a5302181 | 2511 | EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin); |
2b97eabc | 2512 | |
5817b52a MB |
2513 | /** |
2514 | * snd_soc_dapm_nc_pin - permanently disable pin. | |
ce6120cc | 2515 | * @dapm: DAPM context |
5817b52a MB |
2516 | * @pin: pin name |
2517 | * | |
2518 | * Marks the specified pin as being not connected, disabling it along | |
2519 | * any parent or child widgets. At present this is identical to | |
2520 | * snd_soc_dapm_disable_pin() but in future it will be extended to do | |
2521 | * additional things such as disabling controls which only affect | |
2522 | * paths through the pin. | |
2523 | * | |
2524 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2525 | * do any widget power switching. | |
2526 | */ | |
ce6120cc | 2527 | int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin) |
5817b52a | 2528 | { |
ce6120cc | 2529 | return snd_soc_dapm_set_pin(dapm, pin, 0); |
5817b52a MB |
2530 | } |
2531 | EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin); | |
2532 | ||
eeec12bf | 2533 | /** |
a5302181 | 2534 | * snd_soc_dapm_get_pin_status - get audio pin status |
ce6120cc | 2535 | * @dapm: DAPM context |
a5302181 | 2536 | * @pin: audio signal pin endpoint (or start point) |
eeec12bf | 2537 | * |
a5302181 | 2538 | * Get audio pin status - connected or disconnected. |
eeec12bf | 2539 | * |
a5302181 | 2540 | * Returns 1 for connected otherwise 0. |
eeec12bf | 2541 | */ |
ce6120cc LG |
2542 | int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm, |
2543 | const char *pin) | |
eeec12bf | 2544 | { |
91a5fca4 | 2545 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); |
eeec12bf | 2546 | |
91a5fca4 LPC |
2547 | if (w) |
2548 | return w->connected; | |
a68b38ad | 2549 | |
eeec12bf GG |
2550 | return 0; |
2551 | } | |
a5302181 | 2552 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status); |
eeec12bf | 2553 | |
1547aba9 MB |
2554 | /** |
2555 | * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint | |
ce6120cc | 2556 | * @dapm: DAPM context |
1547aba9 MB |
2557 | * @pin: audio signal pin endpoint (or start point) |
2558 | * | |
2559 | * Mark the given endpoint or pin as ignoring suspend. When the | |
2560 | * system is disabled a path between two endpoints flagged as ignoring | |
2561 | * suspend will not be disabled. The path must already be enabled via | |
2562 | * normal means at suspend time, it will not be turned on if it was not | |
2563 | * already enabled. | |
2564 | */ | |
ce6120cc LG |
2565 | int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm, |
2566 | const char *pin) | |
1547aba9 | 2567 | { |
91a5fca4 | 2568 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, false); |
1547aba9 | 2569 | |
91a5fca4 LPC |
2570 | if (!w) { |
2571 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); | |
2572 | return -EINVAL; | |
1547aba9 MB |
2573 | } |
2574 | ||
91a5fca4 LPC |
2575 | w->ignore_suspend = 1; |
2576 | ||
2577 | return 0; | |
1547aba9 MB |
2578 | } |
2579 | EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend); | |
2580 | ||
2b97eabc RP |
2581 | /** |
2582 | * snd_soc_dapm_free - free dapm resources | |
f0fba2ad | 2583 | * @card: SoC device |
2b97eabc RP |
2584 | * |
2585 | * Free all dapm widgets and resources. | |
2586 | */ | |
ce6120cc | 2587 | void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm) |
2b97eabc | 2588 | { |
ce6120cc | 2589 | snd_soc_dapm_sys_remove(dapm->dev); |
6c45e126 | 2590 | dapm_debugfs_cleanup(dapm); |
ce6120cc | 2591 | dapm_free_widgets(dapm); |
7be31be8 | 2592 | list_del(&dapm->list); |
2b97eabc RP |
2593 | } |
2594 | EXPORT_SYMBOL_GPL(snd_soc_dapm_free); | |
2595 | ||
ce6120cc | 2596 | static void soc_dapm_shutdown_codec(struct snd_soc_dapm_context *dapm) |
51737470 | 2597 | { |
51737470 MB |
2598 | struct snd_soc_dapm_widget *w; |
2599 | LIST_HEAD(down_list); | |
2600 | int powerdown = 0; | |
2601 | ||
97c866de JN |
2602 | list_for_each_entry(w, &dapm->card->widgets, list) { |
2603 | if (w->dapm != dapm) | |
2604 | continue; | |
51737470 | 2605 | if (w->power) { |
828a842f | 2606 | dapm_seq_insert(w, &down_list, false); |
c2caa4da | 2607 | w->power = 0; |
51737470 MB |
2608 | powerdown = 1; |
2609 | } | |
2610 | } | |
2611 | ||
2612 | /* If there were no widgets to power down we're already in | |
2613 | * standby. | |
2614 | */ | |
2615 | if (powerdown) { | |
ed5a4c47 | 2616 | snd_soc_dapm_set_bias_level(dapm, SND_SOC_BIAS_PREPARE); |
828a842f | 2617 | dapm_seq_run(dapm, &down_list, 0, false); |
ed5a4c47 | 2618 | snd_soc_dapm_set_bias_level(dapm, SND_SOC_BIAS_STANDBY); |
51737470 | 2619 | } |
f0fba2ad LG |
2620 | } |
2621 | ||
2622 | /* | |
2623 | * snd_soc_dapm_shutdown - callback for system shutdown | |
2624 | */ | |
2625 | void snd_soc_dapm_shutdown(struct snd_soc_card *card) | |
2626 | { | |
2627 | struct snd_soc_codec *codec; | |
2628 | ||
ce6120cc LG |
2629 | list_for_each_entry(codec, &card->codec_dev_list, list) { |
2630 | soc_dapm_shutdown_codec(&codec->dapm); | |
ed5a4c47 | 2631 | snd_soc_dapm_set_bias_level(&codec->dapm, SND_SOC_BIAS_OFF); |
ce6120cc | 2632 | } |
51737470 MB |
2633 | } |
2634 | ||
2b97eabc | 2635 | /* Module information */ |
d331124d | 2636 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
2b97eabc RP |
2637 | MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC"); |
2638 | MODULE_LICENSE("GPL"); |