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 | 16 | * o Platform power domain - can support external components i.e. amps and |
612a3fec | 17 | * mic/headphone insertion events. |
2b97eabc RP |
18 | * o Automatic Mic Bias support |
19 | * o Jack insertion power event initiation - e.g. hp insertion will enable | |
20 | * sinks, dacs, etc | |
612a3fec | 21 | * o Delayed power down of audio subsystem to reduce pops between a quick |
2b97eabc RP |
22 | * device reopen. |
23 | * | |
2b97eabc RP |
24 | */ |
25 | ||
26 | #include <linux/module.h> | |
27 | #include <linux/moduleparam.h> | |
28 | #include <linux/init.h> | |
9d0624a7 | 29 | #include <linux/async.h> |
2b97eabc RP |
30 | #include <linux/delay.h> |
31 | #include <linux/pm.h> | |
32 | #include <linux/bitops.h> | |
33 | #include <linux/platform_device.h> | |
34 | #include <linux/jiffies.h> | |
20496ff3 | 35 | #include <linux/debugfs.h> |
f1aac484 | 36 | #include <linux/pm_runtime.h> |
62ea874a | 37 | #include <linux/regulator/consumer.h> |
d7e7eb91 | 38 | #include <linux/clk.h> |
5a0e3ad6 | 39 | #include <linux/slab.h> |
2b97eabc RP |
40 | #include <sound/core.h> |
41 | #include <sound/pcm.h> | |
42 | #include <sound/pcm_params.h> | |
ce6120cc | 43 | #include <sound/soc.h> |
2b97eabc RP |
44 | #include <sound/initval.h> |
45 | ||
84e90930 MB |
46 | #include <trace/events/asoc.h> |
47 | ||
de02d078 MB |
48 | #define DAPM_UPDATE_STAT(widget, val) widget->dapm->card->dapm_stats.val++; |
49 | ||
57295073 LPC |
50 | static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm, |
51 | struct snd_soc_dapm_widget *wsource, struct snd_soc_dapm_widget *wsink, | |
52 | const char *control, | |
53 | int (*connected)(struct snd_soc_dapm_widget *source, | |
54 | struct snd_soc_dapm_widget *sink)); | |
55 | static struct snd_soc_dapm_widget * | |
56 | snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm, | |
57 | const struct snd_soc_dapm_widget *widget); | |
58 | ||
2b97eabc RP |
59 | /* dapm power sequences - make this per codec in the future */ |
60 | static int dapm_up_seq[] = { | |
38357ab2 | 61 | [snd_soc_dapm_pre] = 0, |
62ea874a | 62 | [snd_soc_dapm_regulator_supply] = 1, |
d7e7eb91 | 63 | [snd_soc_dapm_clock_supply] = 1, |
1dd275b6 MB |
64 | [snd_soc_dapm_supply] = 2, |
65 | [snd_soc_dapm_micbias] = 3, | |
c74184ed | 66 | [snd_soc_dapm_dai_link] = 2, |
1dd275b6 MB |
67 | [snd_soc_dapm_dai_in] = 4, |
68 | [snd_soc_dapm_dai_out] = 4, | |
69 | [snd_soc_dapm_aif_in] = 4, | |
70 | [snd_soc_dapm_aif_out] = 4, | |
71 | [snd_soc_dapm_mic] = 5, | |
72 | [snd_soc_dapm_mux] = 6, | |
1dd275b6 MB |
73 | [snd_soc_dapm_dac] = 7, |
74 | [snd_soc_dapm_switch] = 8, | |
75 | [snd_soc_dapm_mixer] = 8, | |
76 | [snd_soc_dapm_mixer_named_ctl] = 8, | |
77 | [snd_soc_dapm_pga] = 9, | |
78 | [snd_soc_dapm_adc] = 10, | |
79 | [snd_soc_dapm_out_drv] = 11, | |
80 | [snd_soc_dapm_hp] = 11, | |
81 | [snd_soc_dapm_spk] = 11, | |
82 | [snd_soc_dapm_line] = 11, | |
83 | [snd_soc_dapm_kcontrol] = 12, | |
84 | [snd_soc_dapm_post] = 13, | |
2b97eabc | 85 | }; |
ca9c1aae | 86 | |
2b97eabc | 87 | static int dapm_down_seq[] = { |
38357ab2 | 88 | [snd_soc_dapm_pre] = 0, |
57295073 LPC |
89 | [snd_soc_dapm_kcontrol] = 1, |
90 | [snd_soc_dapm_adc] = 2, | |
91 | [snd_soc_dapm_hp] = 3, | |
92 | [snd_soc_dapm_spk] = 3, | |
93 | [snd_soc_dapm_line] = 3, | |
94 | [snd_soc_dapm_out_drv] = 3, | |
38357ab2 | 95 | [snd_soc_dapm_pga] = 4, |
efc77e36 | 96 | [snd_soc_dapm_switch] = 5, |
38357ab2 | 97 | [snd_soc_dapm_mixer_named_ctl] = 5, |
e3d4dabd MB |
98 | [snd_soc_dapm_mixer] = 5, |
99 | [snd_soc_dapm_dac] = 6, | |
100 | [snd_soc_dapm_mic] = 7, | |
101 | [snd_soc_dapm_micbias] = 8, | |
102 | [snd_soc_dapm_mux] = 9, | |
010ff262 MB |
103 | [snd_soc_dapm_aif_in] = 10, |
104 | [snd_soc_dapm_aif_out] = 10, | |
4616274d MB |
105 | [snd_soc_dapm_dai_in] = 10, |
106 | [snd_soc_dapm_dai_out] = 10, | |
c74184ed | 107 | [snd_soc_dapm_dai_link] = 11, |
c74184ed | 108 | [snd_soc_dapm_supply] = 12, |
1dd275b6 MB |
109 | [snd_soc_dapm_clock_supply] = 13, |
110 | [snd_soc_dapm_regulator_supply] = 13, | |
111 | [snd_soc_dapm_post] = 14, | |
2b97eabc RP |
112 | }; |
113 | ||
f9fa2b18 MB |
114 | static void dapm_assert_locked(struct snd_soc_dapm_context *dapm) |
115 | { | |
116 | if (dapm->card && dapm->card->instantiated) | |
117 | lockdep_assert_held(&dapm->card->dapm_mutex); | |
118 | } | |
119 | ||
12ef193d | 120 | static void pop_wait(u32 pop_time) |
15e4c72f MB |
121 | { |
122 | if (pop_time) | |
123 | schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time)); | |
124 | } | |
125 | ||
fd8d3bc0 | 126 | static void pop_dbg(struct device *dev, u32 pop_time, const char *fmt, ...) |
15e4c72f MB |
127 | { |
128 | va_list args; | |
fd8d3bc0 | 129 | char *buf; |
15e4c72f | 130 | |
fd8d3bc0 JN |
131 | if (!pop_time) |
132 | return; | |
15e4c72f | 133 | |
fd8d3bc0 JN |
134 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); |
135 | if (buf == NULL) | |
136 | return; | |
15e4c72f | 137 | |
fd8d3bc0 JN |
138 | va_start(args, fmt); |
139 | vsnprintf(buf, PAGE_SIZE, fmt, args); | |
9d01df06 | 140 | dev_info(dev, "%s", buf); |
15e4c72f | 141 | va_end(args); |
fd8d3bc0 JN |
142 | |
143 | kfree(buf); | |
15e4c72f MB |
144 | } |
145 | ||
db432b41 MB |
146 | static bool dapm_dirty_widget(struct snd_soc_dapm_widget *w) |
147 | { | |
148 | return !list_empty(&w->dirty); | |
149 | } | |
150 | ||
492c0a18 | 151 | static void dapm_mark_dirty(struct snd_soc_dapm_widget *w, const char *reason) |
db432b41 | 152 | { |
f9fa2b18 MB |
153 | dapm_assert_locked(w->dapm); |
154 | ||
75c1f891 MB |
155 | if (!dapm_dirty_widget(w)) { |
156 | dev_vdbg(w->dapm->dev, "Marking %s dirty due to %s\n", | |
157 | w->name, reason); | |
db432b41 | 158 | list_add_tail(&w->dirty, &w->dapm->card->dapm_dirty); |
75c1f891 | 159 | } |
db432b41 MB |
160 | } |
161 | ||
e2d32ff6 MB |
162 | void dapm_mark_io_dirty(struct snd_soc_dapm_context *dapm) |
163 | { | |
164 | struct snd_soc_card *card = dapm->card; | |
165 | struct snd_soc_dapm_widget *w; | |
166 | ||
167 | mutex_lock(&card->dapm_mutex); | |
168 | ||
169 | list_for_each_entry(w, &card->widgets, list) { | |
170 | switch (w->id) { | |
171 | case snd_soc_dapm_input: | |
172 | case snd_soc_dapm_output: | |
173 | dapm_mark_dirty(w, "Rechecking inputs and outputs"); | |
174 | break; | |
175 | default: | |
176 | break; | |
177 | } | |
178 | } | |
179 | ||
180 | mutex_unlock(&card->dapm_mutex); | |
181 | } | |
182 | EXPORT_SYMBOL_GPL(dapm_mark_io_dirty); | |
183 | ||
2b97eabc | 184 | /* create a new dapm widget */ |
88cb4290 | 185 | static inline struct snd_soc_dapm_widget *dapm_cnew_widget( |
2b97eabc RP |
186 | const struct snd_soc_dapm_widget *_widget) |
187 | { | |
88cb4290 | 188 | return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL); |
2b97eabc RP |
189 | } |
190 | ||
e84357f7 | 191 | struct dapm_kcontrol_data { |
cf7c1de2 | 192 | unsigned int value; |
57295073 | 193 | struct snd_soc_dapm_widget *widget; |
5106b92f | 194 | struct list_head paths; |
2c75bdf3 | 195 | struct snd_soc_dapm_widget_list *wlist; |
e84357f7 LPC |
196 | }; |
197 | ||
198 | static int dapm_kcontrol_data_alloc(struct snd_soc_dapm_widget *widget, | |
199 | struct snd_kcontrol *kcontrol) | |
200 | { | |
201 | struct dapm_kcontrol_data *data; | |
57295073 | 202 | struct soc_mixer_control *mc; |
e84357f7 | 203 | |
2c75bdf3 | 204 | data = kzalloc(sizeof(*data), GFP_KERNEL); |
e84357f7 LPC |
205 | if (!data) { |
206 | dev_err(widget->dapm->dev, | |
207 | "ASoC: can't allocate kcontrol data for %s\n", | |
208 | widget->name); | |
209 | return -ENOMEM; | |
210 | } | |
211 | ||
5106b92f | 212 | INIT_LIST_HEAD(&data->paths); |
e84357f7 | 213 | |
57295073 LPC |
214 | switch (widget->id) { |
215 | case snd_soc_dapm_switch: | |
216 | case snd_soc_dapm_mixer: | |
217 | case snd_soc_dapm_mixer_named_ctl: | |
218 | mc = (struct soc_mixer_control *)kcontrol->private_value; | |
219 | ||
220 | if (mc->autodisable) { | |
221 | struct snd_soc_dapm_widget template; | |
222 | ||
223 | memset(&template, 0, sizeof(template)); | |
224 | template.reg = mc->reg; | |
225 | template.mask = (1 << fls(mc->max)) - 1; | |
226 | template.shift = mc->shift; | |
227 | if (mc->invert) | |
228 | template.off_val = mc->max; | |
229 | else | |
230 | template.off_val = 0; | |
231 | template.on_val = template.off_val; | |
232 | template.id = snd_soc_dapm_kcontrol; | |
233 | template.name = kcontrol->id.name; | |
234 | ||
2daabd78 LPC |
235 | data->value = template.on_val; |
236 | ||
57295073 LPC |
237 | data->widget = snd_soc_dapm_new_control(widget->dapm, |
238 | &template); | |
239 | if (!data->widget) { | |
240 | kfree(data); | |
241 | return -ENOMEM; | |
242 | } | |
243 | } | |
244 | break; | |
245 | default: | |
246 | break; | |
247 | } | |
248 | ||
e84357f7 LPC |
249 | kcontrol->private_data = data; |
250 | ||
251 | return 0; | |
252 | } | |
253 | ||
254 | static void dapm_kcontrol_free(struct snd_kcontrol *kctl) | |
255 | { | |
256 | struct dapm_kcontrol_data *data = snd_kcontrol_chip(kctl); | |
2c75bdf3 | 257 | kfree(data->wlist); |
e84357f7 LPC |
258 | kfree(data); |
259 | } | |
260 | ||
261 | static struct snd_soc_dapm_widget_list *dapm_kcontrol_get_wlist( | |
262 | const struct snd_kcontrol *kcontrol) | |
263 | { | |
264 | struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol); | |
265 | ||
2c75bdf3 | 266 | return data->wlist; |
e84357f7 LPC |
267 | } |
268 | ||
269 | static int dapm_kcontrol_add_widget(struct snd_kcontrol *kcontrol, | |
270 | struct snd_soc_dapm_widget *widget) | |
271 | { | |
272 | struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol); | |
2c75bdf3 LPC |
273 | struct snd_soc_dapm_widget_list *new_wlist; |
274 | unsigned int n; | |
e84357f7 | 275 | |
2c75bdf3 LPC |
276 | if (data->wlist) |
277 | n = data->wlist->num_widgets + 1; | |
278 | else | |
279 | n = 1; | |
280 | ||
281 | new_wlist = krealloc(data->wlist, | |
282 | sizeof(*new_wlist) + sizeof(widget) * n, GFP_KERNEL); | |
283 | if (!new_wlist) | |
e84357f7 LPC |
284 | return -ENOMEM; |
285 | ||
2c75bdf3 LPC |
286 | new_wlist->widgets[n - 1] = widget; |
287 | new_wlist->num_widgets = n; | |
e84357f7 | 288 | |
2c75bdf3 | 289 | data->wlist = new_wlist; |
e84357f7 LPC |
290 | |
291 | return 0; | |
292 | } | |
293 | ||
5106b92f LPC |
294 | static void dapm_kcontrol_add_path(const struct snd_kcontrol *kcontrol, |
295 | struct snd_soc_dapm_path *path) | |
296 | { | |
297 | struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol); | |
298 | ||
299 | list_add_tail(&path->list_kcontrol, &data->paths); | |
57295073 LPC |
300 | |
301 | if (data->widget) { | |
302 | snd_soc_dapm_add_path(data->widget->dapm, data->widget, | |
303 | path->source, NULL, NULL); | |
304 | } | |
305 | } | |
306 | ||
307 | static bool dapm_kcontrol_is_powered(const struct snd_kcontrol *kcontrol) | |
308 | { | |
309 | struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol); | |
310 | ||
311 | if (!data->widget) | |
312 | return true; | |
313 | ||
314 | return data->widget->power; | |
5106b92f LPC |
315 | } |
316 | ||
317 | static struct list_head *dapm_kcontrol_get_path_list( | |
318 | const struct snd_kcontrol *kcontrol) | |
319 | { | |
320 | struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol); | |
321 | ||
322 | return &data->paths; | |
323 | } | |
324 | ||
325 | #define dapm_kcontrol_for_each_path(path, kcontrol) \ | |
326 | list_for_each_entry(path, dapm_kcontrol_get_path_list(kcontrol), \ | |
327 | list_kcontrol) | |
328 | ||
cf7c1de2 LPC |
329 | static unsigned int dapm_kcontrol_get_value(const struct snd_kcontrol *kcontrol) |
330 | { | |
331 | struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol); | |
332 | ||
333 | return data->value; | |
334 | } | |
335 | ||
336 | static bool dapm_kcontrol_set_value(const struct snd_kcontrol *kcontrol, | |
337 | unsigned int value) | |
338 | { | |
339 | struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol); | |
340 | ||
341 | if (data->value == value) | |
342 | return false; | |
343 | ||
57295073 LPC |
344 | if (data->widget) |
345 | data->widget->on_val = value; | |
346 | ||
cf7c1de2 LPC |
347 | data->value = value; |
348 | ||
349 | return true; | |
350 | } | |
351 | ||
eee5d7f9 LPC |
352 | /** |
353 | * snd_soc_dapm_kcontrol_codec() - Returns the codec associated to a kcontrol | |
354 | * @kcontrol: The kcontrol | |
355 | */ | |
356 | struct snd_soc_codec *snd_soc_dapm_kcontrol_codec(struct snd_kcontrol *kcontrol) | |
357 | { | |
e84357f7 | 358 | return dapm_kcontrol_get_wlist(kcontrol)->widgets[0]->codec; |
eee5d7f9 LPC |
359 | } |
360 | EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_codec); | |
361 | ||
6c120e19 LG |
362 | static void dapm_reset(struct snd_soc_card *card) |
363 | { | |
364 | struct snd_soc_dapm_widget *w; | |
365 | ||
f9fa2b18 MB |
366 | lockdep_assert_held(&card->dapm_mutex); |
367 | ||
6c120e19 LG |
368 | memset(&card->dapm_stats, 0, sizeof(card->dapm_stats)); |
369 | ||
370 | list_for_each_entry(w, &card->widgets, list) { | |
39eb5fd1 | 371 | w->new_power = w->power; |
6c120e19 LG |
372 | w->power_checked = false; |
373 | w->inputs = -1; | |
374 | w->outputs = -1; | |
375 | } | |
376 | } | |
377 | ||
94f99c87 LPC |
378 | static const char *soc_dapm_prefix(struct snd_soc_dapm_context *dapm) |
379 | { | |
380 | if (!dapm->component) | |
381 | return NULL; | |
382 | return dapm->component->name_prefix; | |
383 | } | |
384 | ||
f7d3c170 ASL |
385 | static int soc_widget_read(struct snd_soc_dapm_widget *w, int reg, |
386 | unsigned int *value) | |
0445bdf4 | 387 | { |
e2c330b9 LPC |
388 | if (!w->dapm->component) |
389 | return -EIO; | |
390 | return snd_soc_component_read(w->dapm->component, reg, value); | |
49575fb5 LG |
391 | } |
392 | ||
23d5442b | 393 | static int soc_widget_update_bits(struct snd_soc_dapm_widget *w, |
e2c330b9 | 394 | int reg, unsigned int mask, unsigned int value) |
49575fb5 | 395 | { |
e2c330b9 LPC |
396 | if (!w->dapm->component) |
397 | return -EIO; | |
398 | return snd_soc_component_update_bits_async(w->dapm->component, reg, | |
399 | mask, value); | |
49575fb5 LG |
400 | } |
401 | ||
eb270e98 MB |
402 | static void soc_dapm_async_complete(struct snd_soc_dapm_context *dapm) |
403 | { | |
e2c330b9 LPC |
404 | if (dapm->component) |
405 | snd_soc_component_async_complete(dapm->component); | |
0445bdf4 LG |
406 | } |
407 | ||
452c5eaa MB |
408 | /** |
409 | * snd_soc_dapm_set_bias_level - set the bias level for the system | |
ed5a4c47 | 410 | * @dapm: DAPM context |
452c5eaa MB |
411 | * @level: level to configure |
412 | * | |
413 | * Configure the bias (power) levels for the SoC audio device. | |
414 | * | |
415 | * Returns 0 for success else error. | |
416 | */ | |
ed5a4c47 | 417 | static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm, |
ce6120cc | 418 | enum snd_soc_bias_level level) |
452c5eaa | 419 | { |
ed5a4c47 | 420 | struct snd_soc_card *card = dapm->card; |
452c5eaa MB |
421 | int ret = 0; |
422 | ||
84e90930 MB |
423 | trace_snd_soc_bias_level_start(card, level); |
424 | ||
f0fba2ad | 425 | if (card && card->set_bias_level) |
d4c6005f | 426 | ret = card->set_bias_level(card, dapm, level); |
171ec6b0 MB |
427 | if (ret != 0) |
428 | goto out; | |
429 | ||
68f831c2 LPC |
430 | if (dapm->set_bias_level) |
431 | ret = dapm->set_bias_level(dapm, level); | |
432 | else if (!card || dapm != &card->dapm) | |
4123128e LG |
433 | dapm->bias_level = level; |
434 | ||
171ec6b0 MB |
435 | if (ret != 0) |
436 | goto out; | |
437 | ||
438 | if (card && card->set_bias_level_post) | |
d4c6005f | 439 | ret = card->set_bias_level_post(card, dapm, level); |
171ec6b0 | 440 | out: |
84e90930 MB |
441 | trace_snd_soc_bias_level_done(card, level); |
442 | ||
452c5eaa MB |
443 | return ret; |
444 | } | |
445 | ||
74b8f955 | 446 | /* connect mux widget to its interconnecting audio paths */ |
ce6120cc | 447 | static int dapm_connect_mux(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
448 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, |
449 | struct snd_soc_dapm_path *path, const char *control_name, | |
450 | const struct snd_kcontrol_new *kcontrol) | |
2b97eabc | 451 | { |
2b97eabc | 452 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
234c0b8f | 453 | unsigned int val, item; |
2b97eabc | 454 | int i; |
24ff33ac | 455 | |
234c0b8f LPC |
456 | if (e->reg != SND_SOC_NOPM) { |
457 | soc_widget_read(dest, e->reg, &val); | |
458 | val = (val >> e->shift_l) & e->mask; | |
459 | item = snd_soc_enum_val_to_item(e, val); | |
460 | } else { | |
24ff33ac DP |
461 | /* since a virtual mux has no backing registers to |
462 | * decide which path to connect, it will try to match | |
463 | * with the first enumeration. This is to ensure | |
464 | * that the default mux choice (the first) will be | |
465 | * correctly powered up during initialization. | |
466 | */ | |
234c0b8f | 467 | item = 0; |
24ff33ac | 468 | } |
2e72f8e3 | 469 | |
9a8d38db | 470 | for (i = 0; i < e->items; i++) { |
2b97eabc | 471 | if (!(strcmp(control_name, e->texts[i]))) { |
8ddab3f5 | 472 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
473 | list_add(&path->list_sink, &dest->sources); |
474 | list_add(&path->list_source, &src->sinks); | |
475 | path->name = (char*)e->texts[i]; | |
234c0b8f LPC |
476 | if (i == item) |
477 | path->connect = 1; | |
478 | else | |
479 | path->connect = 0; | |
2b97eabc RP |
480 | return 0; |
481 | } | |
482 | } | |
483 | ||
484 | return -ENODEV; | |
485 | } | |
486 | ||
234c0b8f LPC |
487 | /* set up initial codec paths */ |
488 | static void dapm_set_mixer_path_status(struct snd_soc_dapm_widget *w, | |
489 | struct snd_soc_dapm_path *p, int i) | |
490 | { | |
491 | struct soc_mixer_control *mc = (struct soc_mixer_control *) | |
492 | w->kcontrol_news[i].private_value; | |
493 | unsigned int reg = mc->reg; | |
494 | unsigned int shift = mc->shift; | |
495 | unsigned int max = mc->max; | |
496 | unsigned int mask = (1 << fls(max)) - 1; | |
497 | unsigned int invert = mc->invert; | |
498 | unsigned int val; | |
499 | ||
500 | if (reg != SND_SOC_NOPM) { | |
501 | soc_widget_read(w, reg, &val); | |
502 | val = (val >> shift) & mask; | |
503 | if (invert) | |
504 | val = max - val; | |
505 | p->connect = !!val; | |
506 | } else { | |
507 | p->connect = 0; | |
508 | } | |
509 | } | |
510 | ||
74b8f955 | 511 | /* connect mixer widget to its interconnecting audio paths */ |
ce6120cc | 512 | static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
513 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, |
514 | struct snd_soc_dapm_path *path, const char *control_name) | |
515 | { | |
516 | int i; | |
517 | ||
518 | /* search for mixer kcontrol */ | |
519 | for (i = 0; i < dest->num_kcontrols; i++) { | |
82cfecdc | 520 | if (!strcmp(control_name, dest->kcontrol_news[i].name)) { |
8ddab3f5 | 521 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
522 | list_add(&path->list_sink, &dest->sources); |
523 | list_add(&path->list_source, &src->sinks); | |
82cfecdc | 524 | path->name = dest->kcontrol_news[i].name; |
234c0b8f | 525 | dapm_set_mixer_path_status(dest, path, i); |
2b97eabc RP |
526 | return 0; |
527 | } | |
528 | } | |
529 | return -ENODEV; | |
530 | } | |
531 | ||
af46800b | 532 | static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context *dapm, |
1007da06 | 533 | struct snd_soc_dapm_widget *kcontrolw, |
af46800b SW |
534 | const struct snd_kcontrol_new *kcontrol_new, |
535 | struct snd_kcontrol **kcontrol) | |
536 | { | |
537 | struct snd_soc_dapm_widget *w; | |
538 | int i; | |
539 | ||
540 | *kcontrol = NULL; | |
541 | ||
542 | list_for_each_entry(w, &dapm->card->widgets, list) { | |
1007da06 SW |
543 | if (w == kcontrolw || w->dapm != kcontrolw->dapm) |
544 | continue; | |
af46800b SW |
545 | for (i = 0; i < w->num_kcontrols; i++) { |
546 | if (&w->kcontrol_news[i] == kcontrol_new) { | |
547 | if (w->kcontrols) | |
548 | *kcontrol = w->kcontrols[i]; | |
549 | return 1; | |
550 | } | |
551 | } | |
552 | } | |
553 | ||
554 | return 0; | |
555 | } | |
556 | ||
85762e71 SW |
557 | /* |
558 | * Determine if a kcontrol is shared. If it is, look it up. If it isn't, | |
559 | * create it. Either way, add the widget into the control's widget list | |
560 | */ | |
561 | static int dapm_create_or_share_mixmux_kcontrol(struct snd_soc_dapm_widget *w, | |
946d92a1 | 562 | int kci) |
2b97eabc | 563 | { |
4b80b8c2 | 564 | struct snd_soc_dapm_context *dapm = w->dapm; |
12ea2c78 | 565 | struct snd_card *card = dapm->card->snd_card; |
efb7ac3f | 566 | const char *prefix; |
85762e71 SW |
567 | size_t prefix_len; |
568 | int shared; | |
569 | struct snd_kcontrol *kcontrol; | |
85762e71 | 570 | bool wname_in_long_name, kcname_in_long_name; |
85762e71 SW |
571 | char *long_name; |
572 | const char *name; | |
573 | int ret; | |
efb7ac3f | 574 | |
94f99c87 | 575 | prefix = soc_dapm_prefix(dapm); |
3e5ff4df MB |
576 | if (prefix) |
577 | prefix_len = strlen(prefix) + 1; | |
578 | else | |
579 | prefix_len = 0; | |
580 | ||
85762e71 SW |
581 | shared = dapm_is_shared_kcontrol(dapm, w, &w->kcontrol_news[kci], |
582 | &kcontrol); | |
2b97eabc | 583 | |
85762e71 SW |
584 | if (!kcontrol) { |
585 | if (shared) { | |
586 | wname_in_long_name = false; | |
587 | kcname_in_long_name = true; | |
588 | } else { | |
589 | switch (w->id) { | |
590 | case snd_soc_dapm_switch: | |
591 | case snd_soc_dapm_mixer: | |
592 | wname_in_long_name = true; | |
593 | kcname_in_long_name = true; | |
594 | break; | |
595 | case snd_soc_dapm_mixer_named_ctl: | |
596 | wname_in_long_name = false; | |
597 | kcname_in_long_name = true; | |
598 | break; | |
599 | case snd_soc_dapm_mux: | |
85762e71 SW |
600 | wname_in_long_name = true; |
601 | kcname_in_long_name = false; | |
602 | break; | |
603 | default: | |
85762e71 | 604 | return -EINVAL; |
82cd8764 | 605 | } |
85762e71 SW |
606 | } |
607 | ||
608 | if (wname_in_long_name && kcname_in_long_name) { | |
85762e71 SW |
609 | /* |
610 | * The control will get a prefix from the control | |
611 | * creation process but we're also using the same | |
612 | * prefix for widgets so cut the prefix off the | |
613 | * front of the widget name. | |
ca9c1aae | 614 | */ |
2b581074 | 615 | long_name = kasprintf(GFP_KERNEL, "%s %s", |
85762e71 SW |
616 | w->name + prefix_len, |
617 | w->kcontrol_news[kci].name); | |
e84357f7 | 618 | if (long_name == NULL) |
2b581074 | 619 | return -ENOMEM; |
85762e71 SW |
620 | |
621 | name = long_name; | |
622 | } else if (wname_in_long_name) { | |
623 | long_name = NULL; | |
624 | name = w->name + prefix_len; | |
625 | } else { | |
626 | long_name = NULL; | |
627 | name = w->kcontrol_news[kci].name; | |
628 | } | |
ca9c1aae | 629 | |
e84357f7 | 630 | kcontrol = snd_soc_cnew(&w->kcontrol_news[kci], NULL, name, |
85762e71 | 631 | prefix); |
656ca9d3 | 632 | kfree(long_name); |
9356e9d5 LPC |
633 | if (!kcontrol) |
634 | return -ENOMEM; | |
635 | kcontrol->private_free = dapm_kcontrol_free; | |
e84357f7 LPC |
636 | |
637 | ret = dapm_kcontrol_data_alloc(w, kcontrol); | |
638 | if (ret) { | |
639 | snd_ctl_free_one(kcontrol); | |
640 | return ret; | |
641 | } | |
642 | ||
85762e71 SW |
643 | ret = snd_ctl_add(card, kcontrol); |
644 | if (ret < 0) { | |
645 | dev_err(dapm->dev, | |
646 | "ASoC: failed to add widget %s dapm kcontrol %s: %d\n", | |
647 | w->name, name, ret); | |
85762e71 SW |
648 | return ret; |
649 | } | |
85762e71 | 650 | } |
2b97eabc | 651 | |
2c75bdf3 LPC |
652 | ret = dapm_kcontrol_add_widget(kcontrol, w); |
653 | if (ret) | |
654 | return ret; | |
655 | ||
85762e71 | 656 | w->kcontrols[kci] = kcontrol; |
ca9c1aae | 657 | |
85762e71 SW |
658 | return 0; |
659 | } | |
219b93f5 | 660 | |
85762e71 SW |
661 | /* create new dapm mixer control */ |
662 | static int dapm_new_mixer(struct snd_soc_dapm_widget *w) | |
663 | { | |
664 | int i, ret; | |
665 | struct snd_soc_dapm_path *path; | |
666 | ||
667 | /* add kcontrol */ | |
668 | for (i = 0; i < w->num_kcontrols; i++) { | |
669 | /* match name */ | |
670 | list_for_each_entry(path, &w->sources, list_sink) { | |
671 | /* mixer/mux paths name must match control name */ | |
672 | if (path->name != (char *)w->kcontrol_news[i].name) | |
673 | continue; | |
674 | ||
675 | if (w->kcontrols[i]) { | |
5106b92f | 676 | dapm_kcontrol_add_path(w->kcontrols[i], path); |
85762e71 | 677 | continue; |
2b97eabc | 678 | } |
85762e71 | 679 | |
946d92a1 | 680 | ret = dapm_create_or_share_mixmux_kcontrol(w, i); |
85762e71 SW |
681 | if (ret < 0) |
682 | return ret; | |
946d92a1 MB |
683 | |
684 | dapm_kcontrol_add_path(w->kcontrols[i], path); | |
2b97eabc RP |
685 | } |
686 | } | |
85762e71 SW |
687 | |
688 | return 0; | |
2b97eabc RP |
689 | } |
690 | ||
691 | /* create new dapm mux control */ | |
4b80b8c2 | 692 | static int dapm_new_mux(struct snd_soc_dapm_widget *w) |
2b97eabc | 693 | { |
4b80b8c2 | 694 | struct snd_soc_dapm_context *dapm = w->dapm; |
85762e71 | 695 | struct snd_soc_dapm_path *path; |
af46800b | 696 | int ret; |
2b97eabc | 697 | |
af46800b SW |
698 | if (w->num_kcontrols != 1) { |
699 | dev_err(dapm->dev, | |
30a6a1a4 | 700 | "ASoC: mux %s has incorrect number of controls\n", |
af46800b | 701 | w->name); |
2b97eabc RP |
702 | return -EINVAL; |
703 | } | |
704 | ||
fe581391 | 705 | if (list_empty(&w->sources)) { |
85762e71 SW |
706 | dev_err(dapm->dev, "ASoC: mux %s has no paths\n", w->name); |
707 | return -EINVAL; | |
af46800b | 708 | } |
ce6120cc | 709 | |
946d92a1 | 710 | ret = dapm_create_or_share_mixmux_kcontrol(w, 0); |
85762e71 SW |
711 | if (ret < 0) |
712 | return ret; | |
fad59888 | 713 | |
2b97eabc | 714 | list_for_each_entry(path, &w->sources, list_sink) |
5106b92f | 715 | dapm_kcontrol_add_path(w->kcontrols[0], path); |
2b97eabc | 716 | |
af46800b | 717 | return 0; |
2b97eabc RP |
718 | } |
719 | ||
720 | /* create new dapm volume control */ | |
4b80b8c2 | 721 | static int dapm_new_pga(struct snd_soc_dapm_widget *w) |
2b97eabc | 722 | { |
a6c65736 | 723 | if (w->num_kcontrols) |
f7d41ae8 | 724 | dev_err(w->dapm->dev, |
30a6a1a4 | 725 | "ASoC: PGA controls not supported: '%s'\n", w->name); |
2b97eabc | 726 | |
a6c65736 | 727 | return 0; |
2b97eabc RP |
728 | } |
729 | ||
730 | /* reset 'walked' bit for each dapm path */ | |
1059ecfa RT |
731 | static void dapm_clear_walk_output(struct snd_soc_dapm_context *dapm, |
732 | struct list_head *sink) | |
2b97eabc RP |
733 | { |
734 | struct snd_soc_dapm_path *p; | |
735 | ||
1059ecfa RT |
736 | list_for_each_entry(p, sink, list_source) { |
737 | if (p->walked) { | |
738 | p->walked = 0; | |
739 | dapm_clear_walk_output(dapm, &p->sink->sinks); | |
740 | } | |
741 | } | |
2b97eabc RP |
742 | } |
743 | ||
1059ecfa RT |
744 | static void dapm_clear_walk_input(struct snd_soc_dapm_context *dapm, |
745 | struct list_head *source) | |
2b97eabc RP |
746 | { |
747 | struct snd_soc_dapm_path *p; | |
748 | ||
1059ecfa RT |
749 | list_for_each_entry(p, source, list_sink) { |
750 | if (p->walked) { | |
751 | p->walked = 0; | |
752 | dapm_clear_walk_input(dapm, &p->source->sources); | |
753 | } | |
754 | } | |
2b97eabc RP |
755 | } |
756 | ||
1059ecfa | 757 | |
9949788b MB |
758 | /* We implement power down on suspend by checking the power state of |
759 | * the ALSA card - when we are suspending the ALSA state for the card | |
760 | * is set to D3. | |
761 | */ | |
762 | static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget) | |
763 | { | |
12ea2c78 | 764 | int level = snd_power_get_state(widget->dapm->card->snd_card); |
9949788b | 765 | |
f0fba2ad | 766 | switch (level) { |
9949788b MB |
767 | case SNDRV_CTL_POWER_D3hot: |
768 | case SNDRV_CTL_POWER_D3cold: | |
1547aba9 | 769 | if (widget->ignore_suspend) |
30a6a1a4 | 770 | dev_dbg(widget->dapm->dev, "ASoC: %s ignoring suspend\n", |
f7d41ae8 | 771 | widget->name); |
1547aba9 | 772 | return widget->ignore_suspend; |
9949788b MB |
773 | default: |
774 | return 1; | |
775 | } | |
776 | } | |
777 | ||
ec2e3031 LG |
778 | /* add widget to list if it's not already in the list */ |
779 | static int dapm_list_add_widget(struct snd_soc_dapm_widget_list **list, | |
780 | struct snd_soc_dapm_widget *w) | |
781 | { | |
782 | struct snd_soc_dapm_widget_list *wlist; | |
783 | int wlistsize, wlistentries, i; | |
784 | ||
785 | if (*list == NULL) | |
786 | return -EINVAL; | |
787 | ||
788 | wlist = *list; | |
789 | ||
790 | /* is this widget already in the list */ | |
791 | for (i = 0; i < wlist->num_widgets; i++) { | |
792 | if (wlist->widgets[i] == w) | |
793 | return 0; | |
794 | } | |
795 | ||
796 | /* allocate some new space */ | |
797 | wlistentries = wlist->num_widgets + 1; | |
798 | wlistsize = sizeof(struct snd_soc_dapm_widget_list) + | |
799 | wlistentries * sizeof(struct snd_soc_dapm_widget *); | |
800 | *list = krealloc(wlist, wlistsize, GFP_KERNEL); | |
801 | if (*list == NULL) { | |
30a6a1a4 | 802 | dev_err(w->dapm->dev, "ASoC: can't allocate widget list for %s\n", |
ec2e3031 LG |
803 | w->name); |
804 | return -ENOMEM; | |
805 | } | |
806 | wlist = *list; | |
807 | ||
808 | /* insert the widget */ | |
30a6a1a4 | 809 | dev_dbg(w->dapm->dev, "ASoC: added %s in widget list pos %d\n", |
ec2e3031 LG |
810 | w->name, wlist->num_widgets); |
811 | ||
812 | wlist->widgets[wlist->num_widgets] = w; | |
813 | wlist->num_widgets++; | |
814 | return 1; | |
815 | } | |
816 | ||
2b97eabc RP |
817 | /* |
818 | * Recursively check for a completed path to an active or physically connected | |
819 | * output widget. Returns number of complete paths. | |
820 | */ | |
ec2e3031 LG |
821 | static int is_connected_output_ep(struct snd_soc_dapm_widget *widget, |
822 | struct snd_soc_dapm_widget_list **list) | |
2b97eabc RP |
823 | { |
824 | struct snd_soc_dapm_path *path; | |
825 | int con = 0; | |
826 | ||
024dc078 MB |
827 | if (widget->outputs >= 0) |
828 | return widget->outputs; | |
829 | ||
de02d078 MB |
830 | DAPM_UPDATE_STAT(widget, path_checks); |
831 | ||
62ea874a MB |
832 | switch (widget->id) { |
833 | case snd_soc_dapm_supply: | |
834 | case snd_soc_dapm_regulator_supply: | |
d7e7eb91 | 835 | case snd_soc_dapm_clock_supply: |
57295073 | 836 | case snd_soc_dapm_kcontrol: |
246d0a17 | 837 | return 0; |
62ea874a MB |
838 | default: |
839 | break; | |
840 | } | |
246d0a17 | 841 | |
010ff262 MB |
842 | switch (widget->id) { |
843 | case snd_soc_dapm_adc: | |
844 | case snd_soc_dapm_aif_out: | |
4616274d | 845 | case snd_soc_dapm_dai_out: |
024dc078 MB |
846 | if (widget->active) { |
847 | widget->outputs = snd_soc_dapm_suspend_check(widget); | |
848 | return widget->outputs; | |
849 | } | |
010ff262 MB |
850 | default: |
851 | break; | |
852 | } | |
2b97eabc RP |
853 | |
854 | if (widget->connected) { | |
855 | /* connected pin ? */ | |
024dc078 MB |
856 | if (widget->id == snd_soc_dapm_output && !widget->ext) { |
857 | widget->outputs = snd_soc_dapm_suspend_check(widget); | |
858 | return widget->outputs; | |
859 | } | |
2b97eabc RP |
860 | |
861 | /* connected jack or spk ? */ | |
024dc078 MB |
862 | if (widget->id == snd_soc_dapm_hp || |
863 | widget->id == snd_soc_dapm_spk || | |
864 | (widget->id == snd_soc_dapm_line && | |
865 | !list_empty(&widget->sources))) { | |
866 | widget->outputs = snd_soc_dapm_suspend_check(widget); | |
867 | return widget->outputs; | |
868 | } | |
2b97eabc RP |
869 | } |
870 | ||
871 | list_for_each_entry(path, &widget->sinks, list_source) { | |
e56235e0 MB |
872 | DAPM_UPDATE_STAT(widget, neighbour_checks); |
873 | ||
bf3a9e13 MB |
874 | if (path->weak) |
875 | continue; | |
876 | ||
8af294b4 MB |
877 | if (path->walking) |
878 | return 1; | |
879 | ||
2b97eabc RP |
880 | if (path->walked) |
881 | continue; | |
882 | ||
ec2e3031 LG |
883 | trace_snd_soc_dapm_output_path(widget, path); |
884 | ||
2b97eabc RP |
885 | if (path->sink && path->connect) { |
886 | path->walked = 1; | |
8af294b4 | 887 | path->walking = 1; |
ec2e3031 LG |
888 | |
889 | /* do we need to add this widget to the list ? */ | |
890 | if (list) { | |
891 | int err; | |
892 | err = dapm_list_add_widget(list, path->sink); | |
893 | if (err < 0) { | |
30a6a1a4 LG |
894 | dev_err(widget->dapm->dev, |
895 | "ASoC: could not add widget %s\n", | |
ec2e3031 | 896 | widget->name); |
8af294b4 | 897 | path->walking = 0; |
ec2e3031 LG |
898 | return con; |
899 | } | |
900 | } | |
901 | ||
902 | con += is_connected_output_ep(path->sink, list); | |
8af294b4 MB |
903 | |
904 | path->walking = 0; | |
2b97eabc RP |
905 | } |
906 | } | |
907 | ||
024dc078 MB |
908 | widget->outputs = con; |
909 | ||
2b97eabc RP |
910 | return con; |
911 | } | |
912 | ||
913 | /* | |
914 | * Recursively check for a completed path to an active or physically connected | |
915 | * input widget. Returns number of complete paths. | |
916 | */ | |
ec2e3031 LG |
917 | static int is_connected_input_ep(struct snd_soc_dapm_widget *widget, |
918 | struct snd_soc_dapm_widget_list **list) | |
2b97eabc RP |
919 | { |
920 | struct snd_soc_dapm_path *path; | |
921 | int con = 0; | |
922 | ||
024dc078 MB |
923 | if (widget->inputs >= 0) |
924 | return widget->inputs; | |
925 | ||
de02d078 MB |
926 | DAPM_UPDATE_STAT(widget, path_checks); |
927 | ||
62ea874a MB |
928 | switch (widget->id) { |
929 | case snd_soc_dapm_supply: | |
930 | case snd_soc_dapm_regulator_supply: | |
d7e7eb91 | 931 | case snd_soc_dapm_clock_supply: |
57295073 | 932 | case snd_soc_dapm_kcontrol: |
246d0a17 | 933 | return 0; |
62ea874a MB |
934 | default: |
935 | break; | |
936 | } | |
246d0a17 | 937 | |
2b97eabc | 938 | /* active stream ? */ |
010ff262 MB |
939 | switch (widget->id) { |
940 | case snd_soc_dapm_dac: | |
941 | case snd_soc_dapm_aif_in: | |
4616274d | 942 | case snd_soc_dapm_dai_in: |
024dc078 MB |
943 | if (widget->active) { |
944 | widget->inputs = snd_soc_dapm_suspend_check(widget); | |
945 | return widget->inputs; | |
946 | } | |
010ff262 MB |
947 | default: |
948 | break; | |
949 | } | |
2b97eabc RP |
950 | |
951 | if (widget->connected) { | |
952 | /* connected pin ? */ | |
024dc078 MB |
953 | if (widget->id == snd_soc_dapm_input && !widget->ext) { |
954 | widget->inputs = snd_soc_dapm_suspend_check(widget); | |
955 | return widget->inputs; | |
956 | } | |
2b97eabc RP |
957 | |
958 | /* connected VMID/Bias for lower pops */ | |
024dc078 MB |
959 | if (widget->id == snd_soc_dapm_vmid) { |
960 | widget->inputs = snd_soc_dapm_suspend_check(widget); | |
961 | return widget->inputs; | |
962 | } | |
2b97eabc RP |
963 | |
964 | /* connected jack ? */ | |
eaeae5d9 | 965 | if (widget->id == snd_soc_dapm_mic || |
024dc078 MB |
966 | (widget->id == snd_soc_dapm_line && |
967 | !list_empty(&widget->sinks))) { | |
968 | widget->inputs = snd_soc_dapm_suspend_check(widget); | |
969 | return widget->inputs; | |
970 | } | |
971 | ||
1ab97c8c MB |
972 | /* signal generator */ |
973 | if (widget->id == snd_soc_dapm_siggen) { | |
974 | widget->inputs = snd_soc_dapm_suspend_check(widget); | |
975 | return widget->inputs; | |
976 | } | |
2b97eabc RP |
977 | } |
978 | ||
979 | list_for_each_entry(path, &widget->sources, list_sink) { | |
e56235e0 MB |
980 | DAPM_UPDATE_STAT(widget, neighbour_checks); |
981 | ||
bf3a9e13 MB |
982 | if (path->weak) |
983 | continue; | |
984 | ||
8af294b4 MB |
985 | if (path->walking) |
986 | return 1; | |
987 | ||
2b97eabc RP |
988 | if (path->walked) |
989 | continue; | |
990 | ||
ec2e3031 LG |
991 | trace_snd_soc_dapm_input_path(widget, path); |
992 | ||
2b97eabc RP |
993 | if (path->source && path->connect) { |
994 | path->walked = 1; | |
8af294b4 | 995 | path->walking = 1; |
ec2e3031 LG |
996 | |
997 | /* do we need to add this widget to the list ? */ | |
998 | if (list) { | |
999 | int err; | |
90c6ce0d | 1000 | err = dapm_list_add_widget(list, path->source); |
ec2e3031 | 1001 | if (err < 0) { |
30a6a1a4 LG |
1002 | dev_err(widget->dapm->dev, |
1003 | "ASoC: could not add widget %s\n", | |
ec2e3031 | 1004 | widget->name); |
8af294b4 | 1005 | path->walking = 0; |
ec2e3031 LG |
1006 | return con; |
1007 | } | |
1008 | } | |
1009 | ||
1010 | con += is_connected_input_ep(path->source, list); | |
8af294b4 MB |
1011 | |
1012 | path->walking = 0; | |
2b97eabc RP |
1013 | } |
1014 | } | |
1015 | ||
024dc078 MB |
1016 | widget->inputs = con; |
1017 | ||
2b97eabc RP |
1018 | return con; |
1019 | } | |
1020 | ||
ec2e3031 LG |
1021 | /** |
1022 | * snd_soc_dapm_get_connected_widgets - query audio path and it's widgets. | |
1023 | * @dai: the soc DAI. | |
1024 | * @stream: stream direction. | |
1025 | * @list: list of active widgets for this stream. | |
1026 | * | |
1027 | * Queries DAPM graph as to whether an valid audio stream path exists for | |
1028 | * the initial stream specified by name. This takes into account | |
1029 | * current mixer and mux kcontrol settings. Creates list of valid widgets. | |
1030 | * | |
1031 | * Returns the number of valid paths or negative error. | |
1032 | */ | |
1033 | int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai *dai, int stream, | |
1034 | struct snd_soc_dapm_widget_list **list) | |
1035 | { | |
1036 | struct snd_soc_card *card = dai->card; | |
1037 | int paths; | |
1038 | ||
1039 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); | |
1040 | dapm_reset(card); | |
1041 | ||
1059ecfa | 1042 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
ec2e3031 | 1043 | paths = is_connected_output_ep(dai->playback_widget, list); |
1059ecfa RT |
1044 | dapm_clear_walk_output(&card->dapm, |
1045 | &dai->playback_widget->sinks); | |
1046 | } else { | |
d298caae | 1047 | paths = is_connected_input_ep(dai->capture_widget, list); |
1059ecfa RT |
1048 | dapm_clear_walk_input(&card->dapm, |
1049 | &dai->capture_widget->sources); | |
1050 | } | |
ec2e3031 LG |
1051 | |
1052 | trace_snd_soc_dapm_connected(paths, stream); | |
ec2e3031 LG |
1053 | mutex_unlock(&card->dapm_mutex); |
1054 | ||
1055 | return paths; | |
1056 | } | |
1057 | ||
62ea874a MB |
1058 | /* |
1059 | * Handler for regulator supply widget. | |
1060 | */ | |
1061 | int dapm_regulator_event(struct snd_soc_dapm_widget *w, | |
1062 | struct snd_kcontrol *kcontrol, int event) | |
1063 | { | |
c05b84d1 MB |
1064 | int ret; |
1065 | ||
eb270e98 MB |
1066 | soc_dapm_async_complete(w->dapm); |
1067 | ||
c05b84d1 | 1068 | if (SND_SOC_DAPM_EVENT_ON(event)) { |
de9ba98b | 1069 | if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) { |
8784c77a | 1070 | ret = regulator_allow_bypass(w->regulator, false); |
c05b84d1 MB |
1071 | if (ret != 0) |
1072 | dev_warn(w->dapm->dev, | |
30686c35 | 1073 | "ASoC: Failed to unbypass %s: %d\n", |
c05b84d1 MB |
1074 | w->name, ret); |
1075 | } | |
1076 | ||
a3cc056b | 1077 | return regulator_enable(w->regulator); |
c05b84d1 | 1078 | } else { |
de9ba98b | 1079 | if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) { |
8784c77a | 1080 | ret = regulator_allow_bypass(w->regulator, true); |
c05b84d1 MB |
1081 | if (ret != 0) |
1082 | dev_warn(w->dapm->dev, | |
30686c35 | 1083 | "ASoC: Failed to bypass %s: %d\n", |
c05b84d1 MB |
1084 | w->name, ret); |
1085 | } | |
1086 | ||
a3cc056b | 1087 | return regulator_disable_deferred(w->regulator, w->shift); |
c05b84d1 | 1088 | } |
62ea874a MB |
1089 | } |
1090 | EXPORT_SYMBOL_GPL(dapm_regulator_event); | |
1091 | ||
d7e7eb91 OL |
1092 | /* |
1093 | * Handler for clock supply widget. | |
1094 | */ | |
1095 | int dapm_clock_event(struct snd_soc_dapm_widget *w, | |
1096 | struct snd_kcontrol *kcontrol, int event) | |
1097 | { | |
1098 | if (!w->clk) | |
1099 | return -EIO; | |
1100 | ||
eb270e98 MB |
1101 | soc_dapm_async_complete(w->dapm); |
1102 | ||
ec02995a | 1103 | #ifdef CONFIG_HAVE_CLK |
d7e7eb91 | 1104 | if (SND_SOC_DAPM_EVENT_ON(event)) { |
37c1b927 | 1105 | return clk_prepare_enable(w->clk); |
d7e7eb91 | 1106 | } else { |
37c1b927 | 1107 | clk_disable_unprepare(w->clk); |
d7e7eb91 OL |
1108 | return 0; |
1109 | } | |
ec02995a | 1110 | #endif |
98b3cf12 | 1111 | return 0; |
d7e7eb91 OL |
1112 | } |
1113 | EXPORT_SYMBOL_GPL(dapm_clock_event); | |
1114 | ||
d805002b MB |
1115 | static int dapm_widget_power_check(struct snd_soc_dapm_widget *w) |
1116 | { | |
9b8a83b2 MB |
1117 | if (w->power_checked) |
1118 | return w->new_power; | |
1119 | ||
d805002b | 1120 | if (w->force) |
9b8a83b2 | 1121 | w->new_power = 1; |
d805002b | 1122 | else |
9b8a83b2 MB |
1123 | w->new_power = w->power_check(w); |
1124 | ||
1125 | w->power_checked = true; | |
1126 | ||
1127 | return w->new_power; | |
d805002b MB |
1128 | } |
1129 | ||
cd0f2d47 MB |
1130 | /* Generic check to see if a widget should be powered. |
1131 | */ | |
1132 | static int dapm_generic_check_power(struct snd_soc_dapm_widget *w) | |
1133 | { | |
1134 | int in, out; | |
1135 | ||
de02d078 MB |
1136 | DAPM_UPDATE_STAT(w, power_checks); |
1137 | ||
ec2e3031 | 1138 | in = is_connected_input_ep(w, NULL); |
1059ecfa | 1139 | dapm_clear_walk_input(w->dapm, &w->sources); |
ec2e3031 | 1140 | out = is_connected_output_ep(w, NULL); |
1059ecfa | 1141 | dapm_clear_walk_output(w->dapm, &w->sinks); |
cd0f2d47 MB |
1142 | return out != 0 && in != 0; |
1143 | } | |
1144 | ||
6ea31b9f MB |
1145 | /* Check to see if an ADC has power */ |
1146 | static int dapm_adc_check_power(struct snd_soc_dapm_widget *w) | |
1147 | { | |
1148 | int in; | |
1149 | ||
de02d078 MB |
1150 | DAPM_UPDATE_STAT(w, power_checks); |
1151 | ||
6ea31b9f | 1152 | if (w->active) { |
ec2e3031 | 1153 | in = is_connected_input_ep(w, NULL); |
1059ecfa | 1154 | dapm_clear_walk_input(w->dapm, &w->sources); |
6ea31b9f MB |
1155 | return in != 0; |
1156 | } else { | |
1157 | return dapm_generic_check_power(w); | |
1158 | } | |
1159 | } | |
1160 | ||
1161 | /* Check to see if a DAC has power */ | |
1162 | static int dapm_dac_check_power(struct snd_soc_dapm_widget *w) | |
1163 | { | |
1164 | int out; | |
1165 | ||
de02d078 MB |
1166 | DAPM_UPDATE_STAT(w, power_checks); |
1167 | ||
6ea31b9f | 1168 | if (w->active) { |
ec2e3031 | 1169 | out = is_connected_output_ep(w, NULL); |
1059ecfa | 1170 | dapm_clear_walk_output(w->dapm, &w->sinks); |
6ea31b9f MB |
1171 | return out != 0; |
1172 | } else { | |
1173 | return dapm_generic_check_power(w); | |
1174 | } | |
1175 | } | |
1176 | ||
246d0a17 MB |
1177 | /* Check to see if a power supply is needed */ |
1178 | static int dapm_supply_check_power(struct snd_soc_dapm_widget *w) | |
1179 | { | |
1180 | struct snd_soc_dapm_path *path; | |
246d0a17 | 1181 | |
de02d078 MB |
1182 | DAPM_UPDATE_STAT(w, power_checks); |
1183 | ||
246d0a17 MB |
1184 | /* Check if one of our outputs is connected */ |
1185 | list_for_each_entry(path, &w->sinks, list_source) { | |
a8fdac83 MB |
1186 | DAPM_UPDATE_STAT(w, neighbour_checks); |
1187 | ||
bf3a9e13 MB |
1188 | if (path->weak) |
1189 | continue; | |
1190 | ||
215edda3 MB |
1191 | if (path->connected && |
1192 | !path->connected(path->source, path->sink)) | |
1193 | continue; | |
1194 | ||
3017358a MB |
1195 | if (!path->sink) |
1196 | continue; | |
1197 | ||
f68d7e16 MB |
1198 | if (dapm_widget_power_check(path->sink)) |
1199 | return 1; | |
246d0a17 MB |
1200 | } |
1201 | ||
f68d7e16 | 1202 | return 0; |
246d0a17 MB |
1203 | } |
1204 | ||
35c64bca MB |
1205 | static int dapm_always_on_check_power(struct snd_soc_dapm_widget *w) |
1206 | { | |
1207 | return 1; | |
1208 | } | |
1209 | ||
38357ab2 MB |
1210 | static int dapm_seq_compare(struct snd_soc_dapm_widget *a, |
1211 | struct snd_soc_dapm_widget *b, | |
828a842f | 1212 | bool power_up) |
42aa3418 | 1213 | { |
828a842f MB |
1214 | int *sort; |
1215 | ||
1216 | if (power_up) | |
1217 | sort = dapm_up_seq; | |
1218 | else | |
1219 | sort = dapm_down_seq; | |
1220 | ||
38357ab2 MB |
1221 | if (sort[a->id] != sort[b->id]) |
1222 | return sort[a->id] - sort[b->id]; | |
20e4859d MB |
1223 | if (a->subseq != b->subseq) { |
1224 | if (power_up) | |
1225 | return a->subseq - b->subseq; | |
1226 | else | |
1227 | return b->subseq - a->subseq; | |
1228 | } | |
b22ead2a MB |
1229 | if (a->reg != b->reg) |
1230 | return a->reg - b->reg; | |
84dab567 MB |
1231 | if (a->dapm != b->dapm) |
1232 | return (unsigned long)a->dapm - (unsigned long)b->dapm; | |
42aa3418 | 1233 | |
38357ab2 MB |
1234 | return 0; |
1235 | } | |
42aa3418 | 1236 | |
38357ab2 MB |
1237 | /* Insert a widget in order into a DAPM power sequence. */ |
1238 | static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget, | |
1239 | struct list_head *list, | |
828a842f | 1240 | bool power_up) |
38357ab2 MB |
1241 | { |
1242 | struct snd_soc_dapm_widget *w; | |
1243 | ||
1244 | list_for_each_entry(w, list, power_list) | |
828a842f | 1245 | if (dapm_seq_compare(new_widget, w, power_up) < 0) { |
38357ab2 MB |
1246 | list_add_tail(&new_widget->power_list, &w->power_list); |
1247 | return; | |
1248 | } | |
1249 | ||
1250 | list_add_tail(&new_widget->power_list, list); | |
1251 | } | |
1252 | ||
95dd5cd6 | 1253 | static void dapm_seq_check_event(struct snd_soc_card *card, |
68f89ad8 MB |
1254 | struct snd_soc_dapm_widget *w, int event) |
1255 | { | |
68f89ad8 MB |
1256 | const char *ev_name; |
1257 | int power, ret; | |
1258 | ||
1259 | switch (event) { | |
1260 | case SND_SOC_DAPM_PRE_PMU: | |
1261 | ev_name = "PRE_PMU"; | |
1262 | power = 1; | |
1263 | break; | |
1264 | case SND_SOC_DAPM_POST_PMU: | |
1265 | ev_name = "POST_PMU"; | |
1266 | power = 1; | |
1267 | break; | |
1268 | case SND_SOC_DAPM_PRE_PMD: | |
1269 | ev_name = "PRE_PMD"; | |
1270 | power = 0; | |
1271 | break; | |
1272 | case SND_SOC_DAPM_POST_PMD: | |
1273 | ev_name = "POST_PMD"; | |
1274 | power = 0; | |
1275 | break; | |
80114129 MB |
1276 | case SND_SOC_DAPM_WILL_PMU: |
1277 | ev_name = "WILL_PMU"; | |
1278 | power = 1; | |
1279 | break; | |
1280 | case SND_SOC_DAPM_WILL_PMD: | |
1281 | ev_name = "WILL_PMD"; | |
1282 | power = 0; | |
1283 | break; | |
68f89ad8 | 1284 | default: |
a6ed0608 | 1285 | WARN(1, "Unknown event %d\n", event); |
68f89ad8 MB |
1286 | return; |
1287 | } | |
1288 | ||
39eb5fd1 | 1289 | if (w->new_power != power) |
68f89ad8 MB |
1290 | return; |
1291 | ||
1292 | if (w->event && (w->event_flags & event)) { | |
95dd5cd6 | 1293 | pop_dbg(w->dapm->dev, card->pop_time, "pop test : %s %s\n", |
68f89ad8 | 1294 | w->name, ev_name); |
eb270e98 | 1295 | soc_dapm_async_complete(w->dapm); |
84e90930 | 1296 | trace_snd_soc_dapm_widget_event_start(w, event); |
68f89ad8 | 1297 | ret = w->event(w, NULL, event); |
84e90930 | 1298 | trace_snd_soc_dapm_widget_event_done(w, event); |
68f89ad8 | 1299 | if (ret < 0) |
95dd5cd6 | 1300 | dev_err(w->dapm->dev, "ASoC: %s: %s event failed: %d\n", |
68f89ad8 MB |
1301 | ev_name, w->name, ret); |
1302 | } | |
1303 | } | |
1304 | ||
b22ead2a | 1305 | /* Apply the coalesced changes from a DAPM sequence */ |
95dd5cd6 | 1306 | static void dapm_seq_run_coalesced(struct snd_soc_card *card, |
b22ead2a | 1307 | struct list_head *pending) |
163cac06 | 1308 | { |
68f89ad8 | 1309 | struct snd_soc_dapm_widget *w; |
de9ba98b | 1310 | int reg; |
b22ead2a MB |
1311 | unsigned int value = 0; |
1312 | unsigned int mask = 0; | |
b22ead2a MB |
1313 | |
1314 | reg = list_first_entry(pending, struct snd_soc_dapm_widget, | |
1315 | power_list)->reg; | |
1316 | ||
1317 | list_for_each_entry(w, pending, power_list) { | |
bf4edea8 | 1318 | WARN_ON(reg != w->reg); |
39eb5fd1 | 1319 | w->power = w->new_power; |
b22ead2a | 1320 | |
de9ba98b LPC |
1321 | mask |= w->mask << w->shift; |
1322 | if (w->power) | |
1323 | value |= w->on_val << w->shift; | |
b22ead2a | 1324 | else |
de9ba98b | 1325 | value |= w->off_val << w->shift; |
b22ead2a | 1326 | |
95dd5cd6 | 1327 | pop_dbg(w->dapm->dev, card->pop_time, |
b22ead2a MB |
1328 | "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n", |
1329 | w->name, reg, value, mask); | |
81628103 | 1330 | |
68f89ad8 | 1331 | /* Check for events */ |
95dd5cd6 LPC |
1332 | dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMU); |
1333 | dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMD); | |
81628103 MB |
1334 | } |
1335 | ||
1336 | if (reg >= 0) { | |
29376bc7 MB |
1337 | /* Any widget will do, they should all be updating the |
1338 | * same register. | |
1339 | */ | |
1340 | w = list_first_entry(pending, struct snd_soc_dapm_widget, | |
1341 | power_list); | |
1342 | ||
95dd5cd6 | 1343 | pop_dbg(w->dapm->dev, card->pop_time, |
81628103 | 1344 | "pop test : Applying 0x%x/0x%x to %x in %dms\n", |
3a45b867 JN |
1345 | value, mask, reg, card->pop_time); |
1346 | pop_wait(card->pop_time); | |
23d5442b | 1347 | soc_widget_update_bits(w, reg, mask, value); |
b22ead2a MB |
1348 | } |
1349 | ||
81628103 | 1350 | list_for_each_entry(w, pending, power_list) { |
95dd5cd6 LPC |
1351 | dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMU); |
1352 | dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMD); | |
81628103 | 1353 | } |
b22ead2a | 1354 | } |
42aa3418 | 1355 | |
b22ead2a MB |
1356 | /* Apply a DAPM power sequence. |
1357 | * | |
1358 | * We walk over a pre-sorted list of widgets to apply power to. In | |
1359 | * order to minimise the number of writes to the device required | |
1360 | * multiple widgets will be updated in a single write where possible. | |
1361 | * Currently anything that requires more than a single write is not | |
1362 | * handled. | |
1363 | */ | |
95dd5cd6 LPC |
1364 | static void dapm_seq_run(struct snd_soc_card *card, |
1365 | struct list_head *list, int event, bool power_up) | |
b22ead2a MB |
1366 | { |
1367 | struct snd_soc_dapm_widget *w, *n; | |
eb270e98 | 1368 | struct snd_soc_dapm_context *d; |
b22ead2a MB |
1369 | LIST_HEAD(pending); |
1370 | int cur_sort = -1; | |
20e4859d | 1371 | int cur_subseq = -1; |
b22ead2a | 1372 | int cur_reg = SND_SOC_NOPM; |
7be31be8 | 1373 | struct snd_soc_dapm_context *cur_dapm = NULL; |
474b62d6 | 1374 | int ret, i; |
828a842f MB |
1375 | int *sort; |
1376 | ||
1377 | if (power_up) | |
1378 | sort = dapm_up_seq; | |
1379 | else | |
1380 | sort = dapm_down_seq; | |
163cac06 | 1381 | |
b22ead2a MB |
1382 | list_for_each_entry_safe(w, n, list, power_list) { |
1383 | ret = 0; | |
1384 | ||
1385 | /* Do we need to apply any queued changes? */ | |
7be31be8 | 1386 | if (sort[w->id] != cur_sort || w->reg != cur_reg || |
20e4859d | 1387 | w->dapm != cur_dapm || w->subseq != cur_subseq) { |
b22ead2a | 1388 | if (!list_empty(&pending)) |
95dd5cd6 | 1389 | dapm_seq_run_coalesced(card, &pending); |
b22ead2a | 1390 | |
474b62d6 MB |
1391 | if (cur_dapm && cur_dapm->seq_notifier) { |
1392 | for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++) | |
1393 | if (sort[i] == cur_sort) | |
1394 | cur_dapm->seq_notifier(cur_dapm, | |
f85a9e0d MB |
1395 | i, |
1396 | cur_subseq); | |
474b62d6 MB |
1397 | } |
1398 | ||
eb270e98 MB |
1399 | if (cur_dapm && w->dapm != cur_dapm) |
1400 | soc_dapm_async_complete(cur_dapm); | |
1401 | ||
b22ead2a MB |
1402 | INIT_LIST_HEAD(&pending); |
1403 | cur_sort = -1; | |
b0b3e6f8 | 1404 | cur_subseq = INT_MIN; |
b22ead2a | 1405 | cur_reg = SND_SOC_NOPM; |
7be31be8 | 1406 | cur_dapm = NULL; |
b22ead2a MB |
1407 | } |
1408 | ||
163cac06 MB |
1409 | switch (w->id) { |
1410 | case snd_soc_dapm_pre: | |
1411 | if (!w->event) | |
b22ead2a MB |
1412 | list_for_each_entry_safe_continue(w, n, list, |
1413 | power_list); | |
163cac06 | 1414 | |
b22ead2a | 1415 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
1416 | ret = w->event(w, |
1417 | NULL, SND_SOC_DAPM_PRE_PMU); | |
b22ead2a | 1418 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
1419 | ret = w->event(w, |
1420 | NULL, SND_SOC_DAPM_PRE_PMD); | |
163cac06 MB |
1421 | break; |
1422 | ||
1423 | case snd_soc_dapm_post: | |
1424 | if (!w->event) | |
b22ead2a MB |
1425 | list_for_each_entry_safe_continue(w, n, list, |
1426 | power_list); | |
163cac06 | 1427 | |
b22ead2a | 1428 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
1429 | ret = w->event(w, |
1430 | NULL, SND_SOC_DAPM_POST_PMU); | |
b22ead2a | 1431 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
1432 | ret = w->event(w, |
1433 | NULL, SND_SOC_DAPM_POST_PMD); | |
163cac06 MB |
1434 | break; |
1435 | ||
b22ead2a | 1436 | default: |
81628103 MB |
1437 | /* Queue it up for application */ |
1438 | cur_sort = sort[w->id]; | |
20e4859d | 1439 | cur_subseq = w->subseq; |
81628103 | 1440 | cur_reg = w->reg; |
7be31be8 | 1441 | cur_dapm = w->dapm; |
81628103 MB |
1442 | list_move(&w->power_list, &pending); |
1443 | break; | |
163cac06 | 1444 | } |
b22ead2a MB |
1445 | |
1446 | if (ret < 0) | |
f7d41ae8 | 1447 | dev_err(w->dapm->dev, |
30a6a1a4 | 1448 | "ASoC: Failed to apply widget power: %d\n", ret); |
6ea31b9f | 1449 | } |
b22ead2a MB |
1450 | |
1451 | if (!list_empty(&pending)) | |
95dd5cd6 | 1452 | dapm_seq_run_coalesced(card, &pending); |
474b62d6 MB |
1453 | |
1454 | if (cur_dapm && cur_dapm->seq_notifier) { | |
1455 | for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++) | |
1456 | if (sort[i] == cur_sort) | |
1457 | cur_dapm->seq_notifier(cur_dapm, | |
f85a9e0d | 1458 | i, cur_subseq); |
474b62d6 | 1459 | } |
eb270e98 MB |
1460 | |
1461 | list_for_each_entry(d, &card->dapm_list, list) { | |
1462 | soc_dapm_async_complete(d); | |
1463 | } | |
42aa3418 MB |
1464 | } |
1465 | ||
95dd5cd6 | 1466 | static void dapm_widget_update(struct snd_soc_card *card) |
97404f2e | 1467 | { |
95dd5cd6 | 1468 | struct snd_soc_dapm_update *update = card->update; |
ce6cfaf1 LPC |
1469 | struct snd_soc_dapm_widget_list *wlist; |
1470 | struct snd_soc_dapm_widget *w = NULL; | |
1471 | unsigned int wi; | |
97404f2e MB |
1472 | int ret; |
1473 | ||
57295073 | 1474 | if (!update || !dapm_kcontrol_is_powered(update->kcontrol)) |
97404f2e MB |
1475 | return; |
1476 | ||
e84357f7 | 1477 | wlist = dapm_kcontrol_get_wlist(update->kcontrol); |
97404f2e | 1478 | |
ce6cfaf1 LPC |
1479 | for (wi = 0; wi < wlist->num_widgets; wi++) { |
1480 | w = wlist->widgets[wi]; | |
1481 | ||
1482 | if (w->event && (w->event_flags & SND_SOC_DAPM_PRE_REG)) { | |
1483 | ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG); | |
1484 | if (ret != 0) | |
95dd5cd6 | 1485 | dev_err(w->dapm->dev, "ASoC: %s DAPM pre-event failed: %d\n", |
ce6cfaf1 LPC |
1486 | w->name, ret); |
1487 | } | |
97404f2e MB |
1488 | } |
1489 | ||
ce6cfaf1 LPC |
1490 | if (!w) |
1491 | return; | |
1492 | ||
23d5442b | 1493 | ret = soc_widget_update_bits(w, update->reg, update->mask, update->val); |
97404f2e | 1494 | if (ret < 0) |
95dd5cd6 | 1495 | dev_err(w->dapm->dev, "ASoC: %s DAPM update failed: %d\n", |
30a6a1a4 | 1496 | w->name, ret); |
97404f2e | 1497 | |
ce6cfaf1 LPC |
1498 | for (wi = 0; wi < wlist->num_widgets; wi++) { |
1499 | w = wlist->widgets[wi]; | |
1500 | ||
1501 | if (w->event && (w->event_flags & SND_SOC_DAPM_POST_REG)) { | |
1502 | ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG); | |
1503 | if (ret != 0) | |
95dd5cd6 | 1504 | dev_err(w->dapm->dev, "ASoC: %s DAPM post-event failed: %d\n", |
ce6cfaf1 LPC |
1505 | w->name, ret); |
1506 | } | |
97404f2e MB |
1507 | } |
1508 | } | |
1509 | ||
9d0624a7 MB |
1510 | /* Async callback run prior to DAPM sequences - brings to _PREPARE if |
1511 | * they're changing state. | |
1512 | */ | |
1513 | static void dapm_pre_sequence_async(void *data, async_cookie_t cookie) | |
1514 | { | |
1515 | struct snd_soc_dapm_context *d = data; | |
1516 | int ret; | |
1517 | ||
56fba41f MB |
1518 | /* If we're off and we're not supposed to be go into STANDBY */ |
1519 | if (d->bias_level == SND_SOC_BIAS_OFF && | |
1520 | d->target_bias_level != SND_SOC_BIAS_OFF) { | |
f1aac484 MB |
1521 | if (d->dev) |
1522 | pm_runtime_get_sync(d->dev); | |
1523 | ||
9d0624a7 MB |
1524 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY); |
1525 | if (ret != 0) | |
1526 | dev_err(d->dev, | |
30a6a1a4 | 1527 | "ASoC: Failed to turn on bias: %d\n", ret); |
9d0624a7 MB |
1528 | } |
1529 | ||
ce85a4d7 LPC |
1530 | /* Prepare for a transition to ON or away from ON */ |
1531 | if ((d->target_bias_level == SND_SOC_BIAS_ON && | |
1532 | d->bias_level != SND_SOC_BIAS_ON) || | |
1533 | (d->target_bias_level != SND_SOC_BIAS_ON && | |
1534 | d->bias_level == SND_SOC_BIAS_ON)) { | |
9d0624a7 MB |
1535 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE); |
1536 | if (ret != 0) | |
1537 | dev_err(d->dev, | |
30a6a1a4 | 1538 | "ASoC: Failed to prepare bias: %d\n", ret); |
9d0624a7 MB |
1539 | } |
1540 | } | |
1541 | ||
1542 | /* Async callback run prior to DAPM sequences - brings to their final | |
1543 | * state. | |
1544 | */ | |
1545 | static void dapm_post_sequence_async(void *data, async_cookie_t cookie) | |
1546 | { | |
1547 | struct snd_soc_dapm_context *d = data; | |
1548 | int ret; | |
1549 | ||
1550 | /* If we just powered the last thing off drop to standby bias */ | |
56fba41f MB |
1551 | if (d->bias_level == SND_SOC_BIAS_PREPARE && |
1552 | (d->target_bias_level == SND_SOC_BIAS_STANDBY || | |
1553 | d->target_bias_level == SND_SOC_BIAS_OFF)) { | |
9d0624a7 MB |
1554 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY); |
1555 | if (ret != 0) | |
30a6a1a4 | 1556 | dev_err(d->dev, "ASoC: Failed to apply standby bias: %d\n", |
9d0624a7 MB |
1557 | ret); |
1558 | } | |
97404f2e | 1559 | |
9d0624a7 | 1560 | /* If we're in standby and can support bias off then do that */ |
56fba41f MB |
1561 | if (d->bias_level == SND_SOC_BIAS_STANDBY && |
1562 | d->target_bias_level == SND_SOC_BIAS_OFF) { | |
9d0624a7 MB |
1563 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF); |
1564 | if (ret != 0) | |
30a6a1a4 LG |
1565 | dev_err(d->dev, "ASoC: Failed to turn off bias: %d\n", |
1566 | ret); | |
f1aac484 MB |
1567 | |
1568 | if (d->dev) | |
fb644e9c | 1569 | pm_runtime_put(d->dev); |
9d0624a7 MB |
1570 | } |
1571 | ||
1572 | /* If we just powered up then move to active bias */ | |
56fba41f MB |
1573 | if (d->bias_level == SND_SOC_BIAS_PREPARE && |
1574 | d->target_bias_level == SND_SOC_BIAS_ON) { | |
9d0624a7 MB |
1575 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON); |
1576 | if (ret != 0) | |
30a6a1a4 | 1577 | dev_err(d->dev, "ASoC: Failed to apply active bias: %d\n", |
9d0624a7 MB |
1578 | ret); |
1579 | } | |
1580 | } | |
97404f2e | 1581 | |
fe4fda5d MB |
1582 | static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget *peer, |
1583 | bool power, bool connect) | |
1584 | { | |
1585 | /* If a connection is being made or broken then that update | |
1586 | * will have marked the peer dirty, otherwise the widgets are | |
1587 | * not connected and this update has no impact. */ | |
1588 | if (!connect) | |
1589 | return; | |
1590 | ||
1591 | /* If the peer is already in the state we're moving to then we | |
1592 | * won't have an impact on it. */ | |
1593 | if (power != peer->power) | |
75c1f891 | 1594 | dapm_mark_dirty(peer, "peer state change"); |
fe4fda5d MB |
1595 | } |
1596 | ||
05623c43 MB |
1597 | static void dapm_widget_set_power(struct snd_soc_dapm_widget *w, bool power, |
1598 | struct list_head *up_list, | |
1599 | struct list_head *down_list) | |
1600 | { | |
db432b41 MB |
1601 | struct snd_soc_dapm_path *path; |
1602 | ||
05623c43 MB |
1603 | if (w->power == power) |
1604 | return; | |
1605 | ||
1606 | trace_snd_soc_dapm_widget_power(w, power); | |
1607 | ||
db432b41 | 1608 | /* If we changed our power state perhaps our neigbours changed |
fe4fda5d | 1609 | * also. |
db432b41 MB |
1610 | */ |
1611 | list_for_each_entry(path, &w->sources, list_sink) { | |
1612 | if (path->source) { | |
fe4fda5d MB |
1613 | dapm_widget_set_peer_power(path->source, power, |
1614 | path->connect); | |
db432b41 MB |
1615 | } |
1616 | } | |
f3bf3e45 MB |
1617 | switch (w->id) { |
1618 | case snd_soc_dapm_supply: | |
62ea874a | 1619 | case snd_soc_dapm_regulator_supply: |
d7e7eb91 | 1620 | case snd_soc_dapm_clock_supply: |
57295073 | 1621 | case snd_soc_dapm_kcontrol: |
f3bf3e45 MB |
1622 | /* Supplies can't affect their outputs, only their inputs */ |
1623 | break; | |
1624 | default: | |
1625 | list_for_each_entry(path, &w->sinks, list_source) { | |
1626 | if (path->sink) { | |
1627 | dapm_widget_set_peer_power(path->sink, power, | |
1628 | path->connect); | |
1629 | } | |
db432b41 | 1630 | } |
f3bf3e45 | 1631 | break; |
db432b41 MB |
1632 | } |
1633 | ||
05623c43 MB |
1634 | if (power) |
1635 | dapm_seq_insert(w, up_list, true); | |
1636 | else | |
1637 | dapm_seq_insert(w, down_list, false); | |
05623c43 MB |
1638 | } |
1639 | ||
7c81beb0 MB |
1640 | static void dapm_power_one_widget(struct snd_soc_dapm_widget *w, |
1641 | struct list_head *up_list, | |
1642 | struct list_head *down_list) | |
1643 | { | |
7c81beb0 MB |
1644 | int power; |
1645 | ||
1646 | switch (w->id) { | |
1647 | case snd_soc_dapm_pre: | |
1648 | dapm_seq_insert(w, down_list, false); | |
1649 | break; | |
1650 | case snd_soc_dapm_post: | |
1651 | dapm_seq_insert(w, up_list, true); | |
1652 | break; | |
1653 | ||
1654 | default: | |
d805002b | 1655 | power = dapm_widget_power_check(w); |
7c81beb0 | 1656 | |
05623c43 | 1657 | dapm_widget_set_power(w, power, up_list, down_list); |
7c81beb0 MB |
1658 | break; |
1659 | } | |
1660 | } | |
1661 | ||
2b97eabc RP |
1662 | /* |
1663 | * Scan each dapm widget for complete audio path. | |
1664 | * A complete path is a route that has valid endpoints i.e.:- | |
1665 | * | |
1666 | * o DAC to output pin. | |
1667 | * o Input Pin to ADC. | |
1668 | * o Input pin to Output pin (bypass, sidetone) | |
1669 | * o DAC to ADC (loopback). | |
1670 | */ | |
95dd5cd6 | 1671 | static int dapm_power_widgets(struct snd_soc_card *card, int event) |
2b97eabc RP |
1672 | { |
1673 | struct snd_soc_dapm_widget *w; | |
7be31be8 | 1674 | struct snd_soc_dapm_context *d; |
291f3bbc MB |
1675 | LIST_HEAD(up_list); |
1676 | LIST_HEAD(down_list); | |
2955b47d | 1677 | ASYNC_DOMAIN_EXCLUSIVE(async_domain); |
56fba41f | 1678 | enum snd_soc_bias_level bias; |
6d3ddc81 | 1679 | |
f9fa2b18 MB |
1680 | lockdep_assert_held(&card->dapm_mutex); |
1681 | ||
84e90930 MB |
1682 | trace_snd_soc_dapm_start(card); |
1683 | ||
56fba41f | 1684 | list_for_each_entry(d, &card->dapm_list, list) { |
497098be MB |
1685 | if (d->idle_bias_off) |
1686 | d->target_bias_level = SND_SOC_BIAS_OFF; | |
1687 | else | |
1688 | d->target_bias_level = SND_SOC_BIAS_STANDBY; | |
56fba41f | 1689 | } |
7be31be8 | 1690 | |
6c120e19 | 1691 | dapm_reset(card); |
9b8a83b2 | 1692 | |
6d3ddc81 | 1693 | /* Check which widgets we need to power and store them in |
db432b41 MB |
1694 | * lists indicating if they should be powered up or down. We |
1695 | * only check widgets that have been flagged as dirty but note | |
1696 | * that new widgets may be added to the dirty list while we | |
1697 | * iterate. | |
6d3ddc81 | 1698 | */ |
db432b41 | 1699 | list_for_each_entry(w, &card->dapm_dirty, dirty) { |
7c81beb0 | 1700 | dapm_power_one_widget(w, &up_list, &down_list); |
2b97eabc RP |
1701 | } |
1702 | ||
f9de6d74 | 1703 | list_for_each_entry(w, &card->widgets, list) { |
0ff97ebf MB |
1704 | switch (w->id) { |
1705 | case snd_soc_dapm_pre: | |
1706 | case snd_soc_dapm_post: | |
1707 | /* These widgets always need to be powered */ | |
1708 | break; | |
1709 | default: | |
1710 | list_del_init(&w->dirty); | |
1711 | break; | |
1712 | } | |
db432b41 | 1713 | |
39eb5fd1 | 1714 | if (w->new_power) { |
f9de6d74 MB |
1715 | d = w->dapm; |
1716 | ||
1717 | /* Supplies and micbiases only bring the | |
1718 | * context up to STANDBY as unless something | |
1719 | * else is active and passing audio they | |
afe62367 MB |
1720 | * generally don't require full power. Signal |
1721 | * generators are virtual pins and have no | |
1722 | * power impact themselves. | |
f9de6d74 MB |
1723 | */ |
1724 | switch (w->id) { | |
afe62367 | 1725 | case snd_soc_dapm_siggen: |
da83fea6 | 1726 | case snd_soc_dapm_vmid: |
afe62367 | 1727 | break; |
f9de6d74 | 1728 | case snd_soc_dapm_supply: |
62ea874a | 1729 | case snd_soc_dapm_regulator_supply: |
d7e7eb91 | 1730 | case snd_soc_dapm_clock_supply: |
f9de6d74 MB |
1731 | case snd_soc_dapm_micbias: |
1732 | if (d->target_bias_level < SND_SOC_BIAS_STANDBY) | |
1733 | d->target_bias_level = SND_SOC_BIAS_STANDBY; | |
1734 | break; | |
1735 | default: | |
1736 | d->target_bias_level = SND_SOC_BIAS_ON; | |
1737 | break; | |
1738 | } | |
1739 | } | |
1740 | ||
1741 | } | |
1742 | ||
85a843c5 MB |
1743 | /* Force all contexts in the card to the same bias state if |
1744 | * they're not ground referenced. | |
1745 | */ | |
56fba41f | 1746 | bias = SND_SOC_BIAS_OFF; |
52ba67bf | 1747 | list_for_each_entry(d, &card->dapm_list, list) |
56fba41f MB |
1748 | if (d->target_bias_level > bias) |
1749 | bias = d->target_bias_level; | |
52ba67bf | 1750 | list_for_each_entry(d, &card->dapm_list, list) |
85a843c5 MB |
1751 | if (!d->idle_bias_off) |
1752 | d->target_bias_level = bias; | |
52ba67bf | 1753 | |
de02d078 | 1754 | trace_snd_soc_dapm_walk_done(card); |
52ba67bf | 1755 | |
17282ba4 XX |
1756 | /* Run card bias changes at first */ |
1757 | dapm_pre_sequence_async(&card->dapm, 0); | |
1758 | /* Run other bias changes in parallel */ | |
1759 | list_for_each_entry(d, &card->dapm_list, list) { | |
1760 | if (d != &card->dapm) | |
1761 | async_schedule_domain(dapm_pre_sequence_async, d, | |
1762 | &async_domain); | |
1763 | } | |
9d0624a7 | 1764 | async_synchronize_full_domain(&async_domain); |
452c5eaa | 1765 | |
cf1f7c6e | 1766 | list_for_each_entry(w, &down_list, power_list) { |
95dd5cd6 | 1767 | dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMD); |
80114129 MB |
1768 | } |
1769 | ||
cf1f7c6e | 1770 | list_for_each_entry(w, &up_list, power_list) { |
95dd5cd6 | 1771 | dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMU); |
80114129 MB |
1772 | } |
1773 | ||
6d3ddc81 | 1774 | /* Power down widgets first; try to avoid amplifying pops. */ |
95dd5cd6 | 1775 | dapm_seq_run(card, &down_list, event, false); |
2b97eabc | 1776 | |
95dd5cd6 | 1777 | dapm_widget_update(card); |
97404f2e | 1778 | |
6d3ddc81 | 1779 | /* Now power up. */ |
95dd5cd6 | 1780 | dapm_seq_run(card, &up_list, event, true); |
2b97eabc | 1781 | |
9d0624a7 | 1782 | /* Run all the bias changes in parallel */ |
17282ba4 XX |
1783 | list_for_each_entry(d, &card->dapm_list, list) { |
1784 | if (d != &card->dapm) | |
1785 | async_schedule_domain(dapm_post_sequence_async, d, | |
1786 | &async_domain); | |
1787 | } | |
9d0624a7 | 1788 | async_synchronize_full_domain(&async_domain); |
17282ba4 XX |
1789 | /* Run card bias changes at last */ |
1790 | dapm_post_sequence_async(&card->dapm, 0); | |
452c5eaa | 1791 | |
8078d87f LG |
1792 | /* do we need to notify any clients that DAPM event is complete */ |
1793 | list_for_each_entry(d, &card->dapm_list, list) { | |
1794 | if (d->stream_event) | |
1795 | d->stream_event(d, event); | |
1796 | } | |
1797 | ||
95dd5cd6 | 1798 | pop_dbg(card->dev, card->pop_time, |
fd8d3bc0 | 1799 | "DAPM sequencing finished, waiting %dms\n", card->pop_time); |
3a45b867 | 1800 | pop_wait(card->pop_time); |
cb507e7e | 1801 | |
84e90930 MB |
1802 | trace_snd_soc_dapm_done(card); |
1803 | ||
42aa3418 | 1804 | return 0; |
2b97eabc RP |
1805 | } |
1806 | ||
79fb9387 | 1807 | #ifdef CONFIG_DEBUG_FS |
79fb9387 MB |
1808 | static ssize_t dapm_widget_power_read_file(struct file *file, |
1809 | char __user *user_buf, | |
1810 | size_t count, loff_t *ppos) | |
1811 | { | |
1812 | struct snd_soc_dapm_widget *w = file->private_data; | |
1813 | char *buf; | |
1814 | int in, out; | |
1815 | ssize_t ret; | |
1816 | struct snd_soc_dapm_path *p = NULL; | |
1817 | ||
1818 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); | |
1819 | if (!buf) | |
1820 | return -ENOMEM; | |
1821 | ||
ec2e3031 | 1822 | in = is_connected_input_ep(w, NULL); |
1059ecfa | 1823 | dapm_clear_walk_input(w->dapm, &w->sources); |
ec2e3031 | 1824 | out = is_connected_output_ep(w, NULL); |
1059ecfa | 1825 | dapm_clear_walk_output(w->dapm, &w->sinks); |
79fb9387 | 1826 | |
f13ebada MB |
1827 | ret = snprintf(buf, PAGE_SIZE, "%s: %s%s in %d out %d", |
1828 | w->name, w->power ? "On" : "Off", | |
1829 | w->force ? " (forced)" : "", in, out); | |
79fb9387 | 1830 | |
d033c36a MB |
1831 | if (w->reg >= 0) |
1832 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
de9ba98b LPC |
1833 | " - R%d(0x%x) mask 0x%x", |
1834 | w->reg, w->reg, w->mask << w->shift); | |
d033c36a MB |
1835 | |
1836 | ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n"); | |
1837 | ||
3eef08ba MB |
1838 | if (w->sname) |
1839 | ret += snprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n", | |
1840 | w->sname, | |
1841 | w->active ? "active" : "inactive"); | |
79fb9387 MB |
1842 | |
1843 | list_for_each_entry(p, &w->sources, list_sink) { | |
ff18620c | 1844 | if (p->connected && !p->connected(w, p->source)) |
215edda3 MB |
1845 | continue; |
1846 | ||
79fb9387 MB |
1847 | if (p->connect) |
1848 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
67f5ed6e | 1849 | " in \"%s\" \"%s\"\n", |
79fb9387 MB |
1850 | p->name ? p->name : "static", |
1851 | p->source->name); | |
1852 | } | |
1853 | list_for_each_entry(p, &w->sinks, list_source) { | |
215edda3 MB |
1854 | if (p->connected && !p->connected(w, p->sink)) |
1855 | continue; | |
1856 | ||
79fb9387 MB |
1857 | if (p->connect) |
1858 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
67f5ed6e | 1859 | " out \"%s\" \"%s\"\n", |
79fb9387 MB |
1860 | p->name ? p->name : "static", |
1861 | p->sink->name); | |
1862 | } | |
1863 | ||
1864 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); | |
1865 | ||
1866 | kfree(buf); | |
1867 | return ret; | |
1868 | } | |
1869 | ||
1870 | static const struct file_operations dapm_widget_power_fops = { | |
234e3405 | 1871 | .open = simple_open, |
79fb9387 | 1872 | .read = dapm_widget_power_read_file, |
6038f373 | 1873 | .llseek = default_llseek, |
79fb9387 MB |
1874 | }; |
1875 | ||
ef49e4fa MB |
1876 | static ssize_t dapm_bias_read_file(struct file *file, char __user *user_buf, |
1877 | size_t count, loff_t *ppos) | |
1878 | { | |
1879 | struct snd_soc_dapm_context *dapm = file->private_data; | |
1880 | char *level; | |
1881 | ||
1882 | switch (dapm->bias_level) { | |
1883 | case SND_SOC_BIAS_ON: | |
1884 | level = "On\n"; | |
1885 | break; | |
1886 | case SND_SOC_BIAS_PREPARE: | |
1887 | level = "Prepare\n"; | |
1888 | break; | |
1889 | case SND_SOC_BIAS_STANDBY: | |
1890 | level = "Standby\n"; | |
1891 | break; | |
1892 | case SND_SOC_BIAS_OFF: | |
1893 | level = "Off\n"; | |
1894 | break; | |
1895 | default: | |
a6ed0608 | 1896 | WARN(1, "Unknown bias_level %d\n", dapm->bias_level); |
ef49e4fa MB |
1897 | level = "Unknown\n"; |
1898 | break; | |
1899 | } | |
1900 | ||
1901 | return simple_read_from_buffer(user_buf, count, ppos, level, | |
1902 | strlen(level)); | |
1903 | } | |
1904 | ||
1905 | static const struct file_operations dapm_bias_fops = { | |
234e3405 | 1906 | .open = simple_open, |
ef49e4fa MB |
1907 | .read = dapm_bias_read_file, |
1908 | .llseek = default_llseek, | |
1909 | }; | |
1910 | ||
8eecaf62 LPC |
1911 | void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm, |
1912 | struct dentry *parent) | |
79fb9387 | 1913 | { |
79fb9387 MB |
1914 | struct dentry *d; |
1915 | ||
8eecaf62 LPC |
1916 | dapm->debugfs_dapm = debugfs_create_dir("dapm", parent); |
1917 | ||
1918 | if (!dapm->debugfs_dapm) { | |
f1e90af2 | 1919 | dev_warn(dapm->dev, |
30a6a1a4 | 1920 | "ASoC: Failed to create DAPM debugfs directory\n"); |
79fb9387 | 1921 | return; |
8eecaf62 | 1922 | } |
79fb9387 | 1923 | |
ef49e4fa MB |
1924 | d = debugfs_create_file("bias_level", 0444, |
1925 | dapm->debugfs_dapm, dapm, | |
1926 | &dapm_bias_fops); | |
1927 | if (!d) | |
1928 | dev_warn(dapm->dev, | |
1929 | "ASoC: Failed to create bias level debugfs file\n"); | |
d5d1e0be | 1930 | } |
ef49e4fa | 1931 | |
d5d1e0be LPC |
1932 | static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w) |
1933 | { | |
1934 | struct snd_soc_dapm_context *dapm = w->dapm; | |
1935 | struct dentry *d; | |
79fb9387 | 1936 | |
d5d1e0be LPC |
1937 | if (!dapm->debugfs_dapm || !w->name) |
1938 | return; | |
1939 | ||
1940 | d = debugfs_create_file(w->name, 0444, | |
1941 | dapm->debugfs_dapm, w, | |
1942 | &dapm_widget_power_fops); | |
1943 | if (!d) | |
1944 | dev_warn(w->dapm->dev, | |
1945 | "ASoC: Failed to create %s debugfs file\n", | |
1946 | w->name); | |
79fb9387 | 1947 | } |
d5d1e0be | 1948 | |
6c45e126 LPC |
1949 | static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm) |
1950 | { | |
1951 | debugfs_remove_recursive(dapm->debugfs_dapm); | |
1952 | } | |
1953 | ||
79fb9387 | 1954 | #else |
8eecaf62 LPC |
1955 | void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm, |
1956 | struct dentry *parent) | |
79fb9387 MB |
1957 | { |
1958 | } | |
d5d1e0be LPC |
1959 | |
1960 | static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w) | |
1961 | { | |
1962 | } | |
1963 | ||
6c45e126 LPC |
1964 | static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm) |
1965 | { | |
1966 | } | |
1967 | ||
79fb9387 MB |
1968 | #endif |
1969 | ||
2b97eabc | 1970 | /* test and update the power status of a mux widget */ |
95dd5cd6 | 1971 | static int soc_dapm_mux_update_power(struct snd_soc_card *card, |
40f02cd9 | 1972 | struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e) |
2b97eabc RP |
1973 | { |
1974 | struct snd_soc_dapm_path *path; | |
1975 | int found = 0; | |
1976 | ||
f9fa2b18 MB |
1977 | lockdep_assert_held(&card->dapm_mutex); |
1978 | ||
2b97eabc | 1979 | /* find dapm widget path assoc with kcontrol */ |
5106b92f | 1980 | dapm_kcontrol_for_each_path(path, kcontrol) { |
cb01e2b9 | 1981 | if (!path->name || !e->texts[mux]) |
2b97eabc RP |
1982 | continue; |
1983 | ||
1984 | found = 1; | |
1985 | /* we now need to match the string in the enum to the path */ | |
db432b41 | 1986 | if (!(strcmp(path->name, e->texts[mux]))) { |
2b97eabc | 1987 | path->connect = 1; /* new connection */ |
75c1f891 | 1988 | dapm_mark_dirty(path->source, "mux connection"); |
db432b41 MB |
1989 | } else { |
1990 | if (path->connect) | |
75c1f891 MB |
1991 | dapm_mark_dirty(path->source, |
1992 | "mux disconnection"); | |
2b97eabc | 1993 | path->connect = 0; /* old connection must be powered down */ |
db432b41 | 1994 | } |
ce6cfaf1 | 1995 | dapm_mark_dirty(path->sink, "mux change"); |
2b97eabc RP |
1996 | } |
1997 | ||
ce6cfaf1 | 1998 | if (found) |
95dd5cd6 | 1999 | dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc | 2000 | |
618dae11 | 2001 | return found; |
2b97eabc | 2002 | } |
4edbb345 | 2003 | |
ce6cfaf1 | 2004 | int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_context *dapm, |
6b3fc03b LPC |
2005 | struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e, |
2006 | struct snd_soc_dapm_update *update) | |
4edbb345 | 2007 | { |
ce6cfaf1 | 2008 | struct snd_soc_card *card = dapm->card; |
4edbb345 LG |
2009 | int ret; |
2010 | ||
3cd04343 | 2011 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
564c6504 | 2012 | card->update = update; |
95dd5cd6 | 2013 | ret = soc_dapm_mux_update_power(card, kcontrol, mux, e); |
564c6504 | 2014 | card->update = NULL; |
4edbb345 | 2015 | mutex_unlock(&card->dapm_mutex); |
618dae11 | 2016 | if (ret > 0) |
c3f48ae6 | 2017 | soc_dpcm_runtime_update(card); |
4edbb345 LG |
2018 | return ret; |
2019 | } | |
40f02cd9 | 2020 | EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power); |
2b97eabc | 2021 | |
1b075e3f | 2022 | /* test and update the power status of a mixer or switch widget */ |
95dd5cd6 | 2023 | static int soc_dapm_mixer_update_power(struct snd_soc_card *card, |
283375ce | 2024 | struct snd_kcontrol *kcontrol, int connect) |
2b97eabc RP |
2025 | { |
2026 | struct snd_soc_dapm_path *path; | |
2027 | int found = 0; | |
2028 | ||
f9fa2b18 MB |
2029 | lockdep_assert_held(&card->dapm_mutex); |
2030 | ||
2b97eabc | 2031 | /* find dapm widget path assoc with kcontrol */ |
5106b92f | 2032 | dapm_kcontrol_for_each_path(path, kcontrol) { |
2b97eabc | 2033 | found = 1; |
283375ce | 2034 | path->connect = connect; |
75c1f891 | 2035 | dapm_mark_dirty(path->source, "mixer connection"); |
ce6cfaf1 | 2036 | dapm_mark_dirty(path->sink, "mixer update"); |
2b97eabc RP |
2037 | } |
2038 | ||
ce6cfaf1 | 2039 | if (found) |
95dd5cd6 | 2040 | dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc | 2041 | |
618dae11 | 2042 | return found; |
2b97eabc | 2043 | } |
4edbb345 | 2044 | |
ce6cfaf1 | 2045 | int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_context *dapm, |
6b3fc03b LPC |
2046 | struct snd_kcontrol *kcontrol, int connect, |
2047 | struct snd_soc_dapm_update *update) | |
4edbb345 | 2048 | { |
ce6cfaf1 | 2049 | struct snd_soc_card *card = dapm->card; |
4edbb345 LG |
2050 | int ret; |
2051 | ||
3cd04343 | 2052 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
564c6504 | 2053 | card->update = update; |
95dd5cd6 | 2054 | ret = soc_dapm_mixer_update_power(card, kcontrol, connect); |
564c6504 | 2055 | card->update = NULL; |
4edbb345 | 2056 | mutex_unlock(&card->dapm_mutex); |
618dae11 | 2057 | if (ret > 0) |
c3f48ae6 | 2058 | soc_dpcm_runtime_update(card); |
4edbb345 LG |
2059 | return ret; |
2060 | } | |
40f02cd9 | 2061 | EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power); |
2b97eabc RP |
2062 | |
2063 | /* show dapm widget status in sys fs */ | |
2064 | static ssize_t dapm_widget_show(struct device *dev, | |
2065 | struct device_attribute *attr, char *buf) | |
2066 | { | |
36ae1a96 | 2067 | struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev); |
f0fba2ad | 2068 | struct snd_soc_codec *codec =rtd->codec; |
2b97eabc RP |
2069 | struct snd_soc_dapm_widget *w; |
2070 | int count = 0; | |
2071 | char *state = "not set"; | |
2072 | ||
97c866de JN |
2073 | list_for_each_entry(w, &codec->card->widgets, list) { |
2074 | if (w->dapm != &codec->dapm) | |
2075 | continue; | |
2b97eabc RP |
2076 | |
2077 | /* only display widgets that burnm power */ | |
2078 | switch (w->id) { | |
2079 | case snd_soc_dapm_hp: | |
2080 | case snd_soc_dapm_mic: | |
2081 | case snd_soc_dapm_spk: | |
2082 | case snd_soc_dapm_line: | |
2083 | case snd_soc_dapm_micbias: | |
2084 | case snd_soc_dapm_dac: | |
2085 | case snd_soc_dapm_adc: | |
2086 | case snd_soc_dapm_pga: | |
d88429a6 | 2087 | case snd_soc_dapm_out_drv: |
2b97eabc | 2088 | case snd_soc_dapm_mixer: |
ca9c1aae | 2089 | case snd_soc_dapm_mixer_named_ctl: |
246d0a17 | 2090 | case snd_soc_dapm_supply: |
62ea874a | 2091 | case snd_soc_dapm_regulator_supply: |
d7e7eb91 | 2092 | case snd_soc_dapm_clock_supply: |
2b97eabc RP |
2093 | if (w->name) |
2094 | count += sprintf(buf + count, "%s: %s\n", | |
2095 | w->name, w->power ? "On":"Off"); | |
2096 | break; | |
2097 | default: | |
2098 | break; | |
2099 | } | |
2100 | } | |
2101 | ||
ce6120cc | 2102 | switch (codec->dapm.bias_level) { |
0be9898a MB |
2103 | case SND_SOC_BIAS_ON: |
2104 | state = "On"; | |
2b97eabc | 2105 | break; |
0be9898a MB |
2106 | case SND_SOC_BIAS_PREPARE: |
2107 | state = "Prepare"; | |
2b97eabc | 2108 | break; |
0be9898a MB |
2109 | case SND_SOC_BIAS_STANDBY: |
2110 | state = "Standby"; | |
2b97eabc | 2111 | break; |
0be9898a MB |
2112 | case SND_SOC_BIAS_OFF: |
2113 | state = "Off"; | |
2b97eabc RP |
2114 | break; |
2115 | } | |
2116 | count += sprintf(buf + count, "PM State: %s\n", state); | |
2117 | ||
2118 | return count; | |
2119 | } | |
2120 | ||
2121 | static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL); | |
2122 | ||
2123 | int snd_soc_dapm_sys_add(struct device *dev) | |
2124 | { | |
12ef193d | 2125 | return device_create_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
2126 | } |
2127 | ||
2128 | static void snd_soc_dapm_sys_remove(struct device *dev) | |
2129 | { | |
aef90843 | 2130 | device_remove_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
2131 | } |
2132 | ||
8872293f LPC |
2133 | static void dapm_free_path(struct snd_soc_dapm_path *path) |
2134 | { | |
2135 | list_del(&path->list_sink); | |
2136 | list_del(&path->list_source); | |
5106b92f | 2137 | list_del(&path->list_kcontrol); |
8872293f | 2138 | list_del(&path->list); |
8872293f LPC |
2139 | kfree(path); |
2140 | } | |
2141 | ||
2b97eabc | 2142 | /* free all dapm widgets and resources */ |
ce6120cc | 2143 | static void dapm_free_widgets(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
2144 | { |
2145 | struct snd_soc_dapm_widget *w, *next_w; | |
2146 | struct snd_soc_dapm_path *p, *next_p; | |
2147 | ||
97c866de JN |
2148 | list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) { |
2149 | if (w->dapm != dapm) | |
2150 | continue; | |
2b97eabc | 2151 | list_del(&w->list); |
8ddab3f5 JN |
2152 | /* |
2153 | * remove source and sink paths associated to this widget. | |
2154 | * While removing the path, remove reference to it from both | |
2155 | * source and sink widgets so that path is removed only once. | |
2156 | */ | |
8872293f LPC |
2157 | list_for_each_entry_safe(p, next_p, &w->sources, list_sink) |
2158 | dapm_free_path(p); | |
2159 | ||
2160 | list_for_each_entry_safe(p, next_p, &w->sinks, list_source) | |
2161 | dapm_free_path(p); | |
2162 | ||
fad59888 | 2163 | kfree(w->kcontrols); |
ead9b919 | 2164 | kfree(w->name); |
2b97eabc RP |
2165 | kfree(w); |
2166 | } | |
2b97eabc RP |
2167 | } |
2168 | ||
91a5fca4 LPC |
2169 | static struct snd_soc_dapm_widget *dapm_find_widget( |
2170 | struct snd_soc_dapm_context *dapm, const char *pin, | |
2171 | bool search_other_contexts) | |
a5302181 LG |
2172 | { |
2173 | struct snd_soc_dapm_widget *w; | |
91a5fca4 | 2174 | struct snd_soc_dapm_widget *fallback = NULL; |
a5302181 | 2175 | |
97c866de | 2176 | list_for_each_entry(w, &dapm->card->widgets, list) { |
a5302181 | 2177 | if (!strcmp(w->name, pin)) { |
91a5fca4 LPC |
2178 | if (w->dapm == dapm) |
2179 | return w; | |
2180 | else | |
2181 | fallback = w; | |
a5302181 LG |
2182 | } |
2183 | } | |
2184 | ||
91a5fca4 LPC |
2185 | if (search_other_contexts) |
2186 | return fallback; | |
2187 | ||
2188 | return NULL; | |
2189 | } | |
2190 | ||
2191 | static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm, | |
2192 | const char *pin, int status) | |
2193 | { | |
2194 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); | |
2195 | ||
f9fa2b18 MB |
2196 | dapm_assert_locked(dapm); |
2197 | ||
91a5fca4 | 2198 | if (!w) { |
30a6a1a4 | 2199 | dev_err(dapm->dev, "ASoC: DAPM unknown pin %s\n", pin); |
91a5fca4 | 2200 | return -EINVAL; |
0d86733c MB |
2201 | } |
2202 | ||
1a8b2d9d MB |
2203 | if (w->connected != status) |
2204 | dapm_mark_dirty(w, "pin configuration"); | |
2205 | ||
91a5fca4 LPC |
2206 | w->connected = status; |
2207 | if (status == 0) | |
2208 | w->force = 0; | |
2209 | ||
2210 | return 0; | |
a5302181 LG |
2211 | } |
2212 | ||
2b97eabc | 2213 | /** |
3eb29dfb | 2214 | * snd_soc_dapm_sync_unlocked - scan and power dapm paths |
ce6120cc | 2215 | * @dapm: DAPM context |
2b97eabc RP |
2216 | * |
2217 | * Walks all dapm audio paths and powers widgets according to their | |
2218 | * stream or path usage. | |
2219 | * | |
3eb29dfb CK |
2220 | * Requires external locking. |
2221 | * | |
2b97eabc RP |
2222 | * Returns 0 for success. |
2223 | */ | |
3eb29dfb | 2224 | int snd_soc_dapm_sync_unlocked(struct snd_soc_dapm_context *dapm) |
2b97eabc | 2225 | { |
4f4c0072 MB |
2226 | /* |
2227 | * Suppress early reports (eg, jacks syncing their state) to avoid | |
2228 | * silly DAPM runs during card startup. | |
2229 | */ | |
2230 | if (!dapm->card || !dapm->card->instantiated) | |
2231 | return 0; | |
2232 | ||
3eb29dfb CK |
2233 | return dapm_power_widgets(dapm->card, SND_SOC_DAPM_STREAM_NOP); |
2234 | } | |
2235 | EXPORT_SYMBOL_GPL(snd_soc_dapm_sync_unlocked); | |
2236 | ||
2237 | /** | |
2238 | * snd_soc_dapm_sync - scan and power dapm paths | |
2239 | * @dapm: DAPM context | |
2240 | * | |
2241 | * Walks all dapm audio paths and powers widgets according to their | |
2242 | * stream or path usage. | |
2243 | * | |
2244 | * Returns 0 for success. | |
2245 | */ | |
2246 | int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm) | |
2247 | { | |
2248 | int ret; | |
2249 | ||
3cd04343 | 2250 | mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
3eb29dfb | 2251 | ret = snd_soc_dapm_sync_unlocked(dapm); |
a73fb2df LG |
2252 | mutex_unlock(&dapm->card->dapm_mutex); |
2253 | return ret; | |
2b97eabc | 2254 | } |
a5302181 | 2255 | EXPORT_SYMBOL_GPL(snd_soc_dapm_sync); |
2b97eabc | 2256 | |
2553628e LPC |
2257 | static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm, |
2258 | struct snd_soc_dapm_widget *wsource, struct snd_soc_dapm_widget *wsink, | |
2259 | const char *control, | |
2260 | int (*connected)(struct snd_soc_dapm_widget *source, | |
2261 | struct snd_soc_dapm_widget *sink)) | |
2b97eabc RP |
2262 | { |
2263 | struct snd_soc_dapm_path *path; | |
2553628e | 2264 | int ret; |
2b97eabc RP |
2265 | |
2266 | path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL); | |
2267 | if (!path) | |
2268 | return -ENOMEM; | |
2269 | ||
2270 | path->source = wsource; | |
2271 | path->sink = wsink; | |
2553628e | 2272 | path->connected = connected; |
2b97eabc | 2273 | INIT_LIST_HEAD(&path->list); |
69c2d346 | 2274 | INIT_LIST_HEAD(&path->list_kcontrol); |
2b97eabc RP |
2275 | INIT_LIST_HEAD(&path->list_source); |
2276 | INIT_LIST_HEAD(&path->list_sink); | |
2277 | ||
2278 | /* check for external widgets */ | |
2279 | if (wsink->id == snd_soc_dapm_input) { | |
2280 | if (wsource->id == snd_soc_dapm_micbias || | |
2281 | wsource->id == snd_soc_dapm_mic || | |
087d53ab RC |
2282 | wsource->id == snd_soc_dapm_line || |
2283 | wsource->id == snd_soc_dapm_output) | |
2b97eabc RP |
2284 | wsink->ext = 1; |
2285 | } | |
2286 | if (wsource->id == snd_soc_dapm_output) { | |
2287 | if (wsink->id == snd_soc_dapm_spk || | |
2288 | wsink->id == snd_soc_dapm_hp || | |
1e39221e SF |
2289 | wsink->id == snd_soc_dapm_line || |
2290 | wsink->id == snd_soc_dapm_input) | |
2b97eabc RP |
2291 | wsource->ext = 1; |
2292 | } | |
2293 | ||
34742cb0 LPC |
2294 | dapm_mark_dirty(wsource, "Route added"); |
2295 | dapm_mark_dirty(wsink, "Route added"); | |
2296 | ||
2b97eabc RP |
2297 | /* connect static paths */ |
2298 | if (control == NULL) { | |
8ddab3f5 | 2299 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
2300 | list_add(&path->list_sink, &wsink->sources); |
2301 | list_add(&path->list_source, &wsource->sinks); | |
2302 | path->connect = 1; | |
2303 | return 0; | |
2304 | } | |
2305 | ||
2306 | /* connect dynamic paths */ | |
dc2bea61 | 2307 | switch (wsink->id) { |
2b97eabc RP |
2308 | case snd_soc_dapm_adc: |
2309 | case snd_soc_dapm_dac: | |
2310 | case snd_soc_dapm_pga: | |
d88429a6 | 2311 | case snd_soc_dapm_out_drv: |
2b97eabc RP |
2312 | case snd_soc_dapm_input: |
2313 | case snd_soc_dapm_output: | |
1ab97c8c | 2314 | case snd_soc_dapm_siggen: |
2b97eabc RP |
2315 | case snd_soc_dapm_micbias: |
2316 | case snd_soc_dapm_vmid: | |
2317 | case snd_soc_dapm_pre: | |
2318 | case snd_soc_dapm_post: | |
246d0a17 | 2319 | case snd_soc_dapm_supply: |
62ea874a | 2320 | case snd_soc_dapm_regulator_supply: |
d7e7eb91 | 2321 | case snd_soc_dapm_clock_supply: |
010ff262 MB |
2322 | case snd_soc_dapm_aif_in: |
2323 | case snd_soc_dapm_aif_out: | |
4616274d MB |
2324 | case snd_soc_dapm_dai_in: |
2325 | case snd_soc_dapm_dai_out: | |
c74184ed | 2326 | case snd_soc_dapm_dai_link: |
57295073 | 2327 | case snd_soc_dapm_kcontrol: |
8ddab3f5 | 2328 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
2329 | list_add(&path->list_sink, &wsink->sources); |
2330 | list_add(&path->list_source, &wsource->sinks); | |
2331 | path->connect = 1; | |
2332 | return 0; | |
2333 | case snd_soc_dapm_mux: | |
ce6120cc | 2334 | ret = dapm_connect_mux(dapm, wsource, wsink, path, control, |
82cfecdc | 2335 | &wsink->kcontrol_news[0]); |
2b97eabc RP |
2336 | if (ret != 0) |
2337 | goto err; | |
2338 | break; | |
2339 | case snd_soc_dapm_switch: | |
2340 | case snd_soc_dapm_mixer: | |
ca9c1aae | 2341 | case snd_soc_dapm_mixer_named_ctl: |
ce6120cc | 2342 | ret = dapm_connect_mixer(dapm, wsource, wsink, path, control); |
2b97eabc RP |
2343 | if (ret != 0) |
2344 | goto err; | |
2345 | break; | |
2346 | case snd_soc_dapm_hp: | |
2347 | case snd_soc_dapm_mic: | |
2348 | case snd_soc_dapm_line: | |
2349 | case snd_soc_dapm_spk: | |
8ddab3f5 | 2350 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
2351 | list_add(&path->list_sink, &wsink->sources); |
2352 | list_add(&path->list_source, &wsource->sinks); | |
2353 | path->connect = 0; | |
2354 | return 0; | |
2355 | } | |
fabd0384 | 2356 | |
2b97eabc | 2357 | return 0; |
2553628e LPC |
2358 | err: |
2359 | kfree(path); | |
2360 | return ret; | |
2361 | } | |
2b97eabc | 2362 | |
2553628e | 2363 | static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm, |
a4e9154c | 2364 | const struct snd_soc_dapm_route *route) |
2553628e LPC |
2365 | { |
2366 | struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w; | |
2367 | struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL; | |
2368 | const char *sink; | |
2369 | const char *source; | |
2370 | char prefixed_sink[80]; | |
2371 | char prefixed_source[80]; | |
94f99c87 | 2372 | const char *prefix; |
2553628e LPC |
2373 | int ret; |
2374 | ||
94f99c87 LPC |
2375 | prefix = soc_dapm_prefix(dapm); |
2376 | if (prefix) { | |
2553628e | 2377 | snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s", |
94f99c87 | 2378 | prefix, route->sink); |
2553628e LPC |
2379 | sink = prefixed_sink; |
2380 | snprintf(prefixed_source, sizeof(prefixed_source), "%s %s", | |
94f99c87 | 2381 | prefix, route->source); |
2553628e LPC |
2382 | source = prefixed_source; |
2383 | } else { | |
2384 | sink = route->sink; | |
2385 | source = route->source; | |
2386 | } | |
2387 | ||
2388 | /* | |
2389 | * find src and dest widgets over all widgets but favor a widget from | |
2390 | * current DAPM context | |
2391 | */ | |
2392 | list_for_each_entry(w, &dapm->card->widgets, list) { | |
2393 | if (!wsink && !(strcmp(w->name, sink))) { | |
2394 | wtsink = w; | |
2395 | if (w->dapm == dapm) | |
2396 | wsink = w; | |
2397 | continue; | |
2398 | } | |
2399 | if (!wsource && !(strcmp(w->name, source))) { | |
2400 | wtsource = w; | |
2401 | if (w->dapm == dapm) | |
2402 | wsource = w; | |
2403 | } | |
2404 | } | |
2405 | /* use widget from another DAPM context if not found from this */ | |
2406 | if (!wsink) | |
2407 | wsink = wtsink; | |
2408 | if (!wsource) | |
2409 | wsource = wtsource; | |
2410 | ||
2411 | if (wsource == NULL) { | |
2412 | dev_err(dapm->dev, "ASoC: no source widget found for %s\n", | |
2413 | route->source); | |
2414 | return -ENODEV; | |
2415 | } | |
2416 | if (wsink == NULL) { | |
2417 | dev_err(dapm->dev, "ASoC: no sink widget found for %s\n", | |
2418 | route->sink); | |
2419 | return -ENODEV; | |
2420 | } | |
2421 | ||
2422 | ret = snd_soc_dapm_add_path(dapm, wsource, wsink, route->control, | |
2423 | route->connected); | |
2424 | if (ret) | |
2425 | goto err; | |
2426 | ||
2427 | return 0; | |
2b97eabc | 2428 | err: |
30a6a1a4 | 2429 | dev_warn(dapm->dev, "ASoC: no dapm match for %s --> %s --> %s\n", |
2553628e | 2430 | source, route->control, sink); |
2b97eabc RP |
2431 | return ret; |
2432 | } | |
105f1c28 | 2433 | |
efcc3c61 MB |
2434 | static int snd_soc_dapm_del_route(struct snd_soc_dapm_context *dapm, |
2435 | const struct snd_soc_dapm_route *route) | |
2436 | { | |
2437 | struct snd_soc_dapm_path *path, *p; | |
2438 | const char *sink; | |
2439 | const char *source; | |
2440 | char prefixed_sink[80]; | |
2441 | char prefixed_source[80]; | |
94f99c87 | 2442 | const char *prefix; |
efcc3c61 MB |
2443 | |
2444 | if (route->control) { | |
2445 | dev_err(dapm->dev, | |
30a6a1a4 | 2446 | "ASoC: Removal of routes with controls not supported\n"); |
efcc3c61 MB |
2447 | return -EINVAL; |
2448 | } | |
2449 | ||
94f99c87 LPC |
2450 | prefix = soc_dapm_prefix(dapm); |
2451 | if (prefix) { | |
efcc3c61 | 2452 | snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s", |
94f99c87 | 2453 | prefix, route->sink); |
efcc3c61 MB |
2454 | sink = prefixed_sink; |
2455 | snprintf(prefixed_source, sizeof(prefixed_source), "%s %s", | |
94f99c87 | 2456 | prefix, route->source); |
efcc3c61 MB |
2457 | source = prefixed_source; |
2458 | } else { | |
2459 | sink = route->sink; | |
2460 | source = route->source; | |
2461 | } | |
2462 | ||
2463 | path = NULL; | |
2464 | list_for_each_entry(p, &dapm->card->paths, list) { | |
2465 | if (strcmp(p->source->name, source) != 0) | |
2466 | continue; | |
2467 | if (strcmp(p->sink->name, sink) != 0) | |
2468 | continue; | |
2469 | path = p; | |
2470 | break; | |
2471 | } | |
2472 | ||
2473 | if (path) { | |
2474 | dapm_mark_dirty(path->source, "Route removed"); | |
2475 | dapm_mark_dirty(path->sink, "Route removed"); | |
2476 | ||
8872293f | 2477 | dapm_free_path(path); |
efcc3c61 | 2478 | } else { |
30a6a1a4 | 2479 | dev_warn(dapm->dev, "ASoC: Route %s->%s does not exist\n", |
efcc3c61 MB |
2480 | source, sink); |
2481 | } | |
2482 | ||
2483 | return 0; | |
2484 | } | |
2485 | ||
105f1c28 MB |
2486 | /** |
2487 | * snd_soc_dapm_add_routes - Add routes between DAPM widgets | |
ce6120cc | 2488 | * @dapm: DAPM context |
105f1c28 MB |
2489 | * @route: audio routes |
2490 | * @num: number of routes | |
2491 | * | |
2492 | * Connects 2 dapm widgets together via a named audio path. The sink is | |
2493 | * the widget receiving the audio signal, whilst the source is the sender | |
2494 | * of the audio signal. | |
2495 | * | |
2496 | * Returns 0 for success else error. On error all resources can be freed | |
2497 | * with a call to snd_soc_card_free(). | |
2498 | */ | |
ce6120cc | 2499 | int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm, |
105f1c28 MB |
2500 | const struct snd_soc_dapm_route *route, int num) |
2501 | { | |
62d4a4b9 | 2502 | int i, r, ret = 0; |
105f1c28 | 2503 | |
a73fb2df | 2504 | mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT); |
105f1c28 | 2505 | for (i = 0; i < num; i++) { |
a4e9154c | 2506 | r = snd_soc_dapm_add_route(dapm, route); |
62d4a4b9 | 2507 | if (r < 0) { |
30a6a1a4 LG |
2508 | dev_err(dapm->dev, "ASoC: Failed to add route %s -> %s -> %s\n", |
2509 | route->source, | |
2510 | route->control ? route->control : "direct", | |
2511 | route->sink); | |
62d4a4b9 | 2512 | ret = r; |
105f1c28 MB |
2513 | } |
2514 | route++; | |
2515 | } | |
a73fb2df | 2516 | mutex_unlock(&dapm->card->dapm_mutex); |
105f1c28 | 2517 | |
60884c27 | 2518 | return ret; |
105f1c28 MB |
2519 | } |
2520 | EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes); | |
2521 | ||
efcc3c61 MB |
2522 | /** |
2523 | * snd_soc_dapm_del_routes - Remove routes between DAPM widgets | |
2524 | * @dapm: DAPM context | |
2525 | * @route: audio routes | |
2526 | * @num: number of routes | |
2527 | * | |
2528 | * Removes routes from the DAPM context. | |
2529 | */ | |
2530 | int snd_soc_dapm_del_routes(struct snd_soc_dapm_context *dapm, | |
2531 | const struct snd_soc_dapm_route *route, int num) | |
2532 | { | |
2533 | int i, ret = 0; | |
2534 | ||
2535 | mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT); | |
2536 | for (i = 0; i < num; i++) { | |
2537 | snd_soc_dapm_del_route(dapm, route); | |
2538 | route++; | |
2539 | } | |
2540 | mutex_unlock(&dapm->card->dapm_mutex); | |
2541 | ||
2542 | return ret; | |
2543 | } | |
2544 | EXPORT_SYMBOL_GPL(snd_soc_dapm_del_routes); | |
2545 | ||
bf3a9e13 MB |
2546 | static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context *dapm, |
2547 | const struct snd_soc_dapm_route *route) | |
2548 | { | |
2549 | struct snd_soc_dapm_widget *source = dapm_find_widget(dapm, | |
2550 | route->source, | |
2551 | true); | |
2552 | struct snd_soc_dapm_widget *sink = dapm_find_widget(dapm, | |
2553 | route->sink, | |
2554 | true); | |
2555 | struct snd_soc_dapm_path *path; | |
2556 | int count = 0; | |
2557 | ||
2558 | if (!source) { | |
30a6a1a4 | 2559 | dev_err(dapm->dev, "ASoC: Unable to find source %s for weak route\n", |
bf3a9e13 MB |
2560 | route->source); |
2561 | return -ENODEV; | |
2562 | } | |
2563 | ||
2564 | if (!sink) { | |
30a6a1a4 | 2565 | dev_err(dapm->dev, "ASoC: Unable to find sink %s for weak route\n", |
bf3a9e13 MB |
2566 | route->sink); |
2567 | return -ENODEV; | |
2568 | } | |
2569 | ||
2570 | if (route->control || route->connected) | |
30a6a1a4 | 2571 | dev_warn(dapm->dev, "ASoC: Ignoring control for weak route %s->%s\n", |
bf3a9e13 MB |
2572 | route->source, route->sink); |
2573 | ||
2574 | list_for_each_entry(path, &source->sinks, list_source) { | |
2575 | if (path->sink == sink) { | |
2576 | path->weak = 1; | |
2577 | count++; | |
2578 | } | |
2579 | } | |
2580 | ||
2581 | if (count == 0) | |
30a6a1a4 | 2582 | dev_err(dapm->dev, "ASoC: No path found for weak route %s->%s\n", |
bf3a9e13 MB |
2583 | route->source, route->sink); |
2584 | if (count > 1) | |
30a6a1a4 | 2585 | dev_warn(dapm->dev, "ASoC: %d paths found for weak route %s->%s\n", |
bf3a9e13 MB |
2586 | count, route->source, route->sink); |
2587 | ||
2588 | return 0; | |
2589 | } | |
2590 | ||
2591 | /** | |
2592 | * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak | |
2593 | * @dapm: DAPM context | |
2594 | * @route: audio routes | |
2595 | * @num: number of routes | |
2596 | * | |
2597 | * Mark existing routes matching those specified in the passed array | |
2598 | * as being weak, meaning that they are ignored for the purpose of | |
2599 | * power decisions. The main intended use case is for sidetone paths | |
2600 | * which couple audio between other independent paths if they are both | |
2601 | * active in order to make the combination work better at the user | |
2602 | * level but which aren't intended to be "used". | |
2603 | * | |
2604 | * Note that CODEC drivers should not use this as sidetone type paths | |
2605 | * can frequently also be used as bypass paths. | |
2606 | */ | |
2607 | int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context *dapm, | |
2608 | const struct snd_soc_dapm_route *route, int num) | |
2609 | { | |
2610 | int i, err; | |
2611 | int ret = 0; | |
2612 | ||
a73fb2df | 2613 | mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT); |
bf3a9e13 MB |
2614 | for (i = 0; i < num; i++) { |
2615 | err = snd_soc_dapm_weak_route(dapm, route); | |
2616 | if (err) | |
2617 | ret = err; | |
2618 | route++; | |
2619 | } | |
a73fb2df | 2620 | mutex_unlock(&dapm->card->dapm_mutex); |
bf3a9e13 MB |
2621 | |
2622 | return ret; | |
2623 | } | |
2624 | EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes); | |
2625 | ||
2b97eabc RP |
2626 | /** |
2627 | * snd_soc_dapm_new_widgets - add new dapm widgets | |
ce6120cc | 2628 | * @dapm: DAPM context |
2b97eabc RP |
2629 | * |
2630 | * Checks the codec for any new dapm widgets and creates them if found. | |
2631 | * | |
2632 | * Returns 0 for success. | |
2633 | */ | |
824ef826 | 2634 | int snd_soc_dapm_new_widgets(struct snd_soc_card *card) |
2b97eabc RP |
2635 | { |
2636 | struct snd_soc_dapm_widget *w; | |
b66a70d5 | 2637 | unsigned int val; |
2b97eabc | 2638 | |
95dd5cd6 | 2639 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT); |
a73fb2df | 2640 | |
95dd5cd6 | 2641 | list_for_each_entry(w, &card->widgets, list) |
2b97eabc RP |
2642 | { |
2643 | if (w->new) | |
2644 | continue; | |
2645 | ||
fad59888 SW |
2646 | if (w->num_kcontrols) { |
2647 | w->kcontrols = kzalloc(w->num_kcontrols * | |
2648 | sizeof(struct snd_kcontrol *), | |
2649 | GFP_KERNEL); | |
a73fb2df | 2650 | if (!w->kcontrols) { |
95dd5cd6 | 2651 | mutex_unlock(&card->dapm_mutex); |
fad59888 | 2652 | return -ENOMEM; |
a73fb2df | 2653 | } |
fad59888 SW |
2654 | } |
2655 | ||
2b97eabc RP |
2656 | switch(w->id) { |
2657 | case snd_soc_dapm_switch: | |
2658 | case snd_soc_dapm_mixer: | |
ca9c1aae | 2659 | case snd_soc_dapm_mixer_named_ctl: |
4b80b8c2 | 2660 | dapm_new_mixer(w); |
2b97eabc RP |
2661 | break; |
2662 | case snd_soc_dapm_mux: | |
4b80b8c2 | 2663 | dapm_new_mux(w); |
2b97eabc | 2664 | break; |
2b97eabc | 2665 | case snd_soc_dapm_pga: |
d88429a6 | 2666 | case snd_soc_dapm_out_drv: |
4b80b8c2 | 2667 | dapm_new_pga(w); |
2b97eabc | 2668 | break; |
7ca3a18b | 2669 | default: |
2b97eabc RP |
2670 | break; |
2671 | } | |
b66a70d5 MB |
2672 | |
2673 | /* Read the initial power state from the device */ | |
2674 | if (w->reg >= 0) { | |
f7d3c170 ASL |
2675 | soc_widget_read(w, w->reg, &val); |
2676 | val = val >> w->shift; | |
de9ba98b LPC |
2677 | val &= w->mask; |
2678 | if (val == w->on_val) | |
b66a70d5 MB |
2679 | w->power = 1; |
2680 | } | |
2681 | ||
2b97eabc | 2682 | w->new = 1; |
d5d1e0be | 2683 | |
7508b12a | 2684 | dapm_mark_dirty(w, "new widget"); |
d5d1e0be | 2685 | dapm_debugfs_add_widget(w); |
2b97eabc RP |
2686 | } |
2687 | ||
95dd5cd6 LPC |
2688 | dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP); |
2689 | mutex_unlock(&card->dapm_mutex); | |
2b97eabc RP |
2690 | return 0; |
2691 | } | |
2692 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets); | |
2693 | ||
2694 | /** | |
2695 | * snd_soc_dapm_get_volsw - dapm mixer get callback | |
2696 | * @kcontrol: mixer control | |
ac11a2b3 | 2697 | * @ucontrol: control element information |
2b97eabc RP |
2698 | * |
2699 | * Callback to get the value of a dapm mixer control. | |
2700 | * | |
2701 | * Returns 0 for success. | |
2702 | */ | |
2703 | int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol, | |
2704 | struct snd_ctl_elem_value *ucontrol) | |
2705 | { | |
eee5d7f9 | 2706 | struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol); |
57295073 | 2707 | struct snd_soc_card *card = codec->card; |
4eaa9819 JS |
2708 | struct soc_mixer_control *mc = |
2709 | (struct soc_mixer_control *)kcontrol->private_value; | |
249ce138 | 2710 | int reg = mc->reg; |
815ecf8d | 2711 | unsigned int shift = mc->shift; |
4eaa9819 | 2712 | int max = mc->max; |
815ecf8d | 2713 | unsigned int mask = (1 << fls(max)) - 1; |
da602ab8 | 2714 | unsigned int invert = mc->invert; |
57295073 | 2715 | unsigned int val; |
da602ab8 BT |
2716 | |
2717 | if (snd_soc_volsw_is_stereo(mc)) | |
eee5d7f9 | 2718 | dev_warn(codec->dapm.dev, |
30a6a1a4 | 2719 | "ASoC: Control '%s' is stereo, which is not supported\n", |
da602ab8 | 2720 | kcontrol->id.name); |
2b97eabc | 2721 | |
57295073 | 2722 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
249ce138 | 2723 | if (dapm_kcontrol_is_powered(kcontrol) && reg != SND_SOC_NOPM) |
57295073 LPC |
2724 | val = (snd_soc_read(codec, reg) >> shift) & mask; |
2725 | else | |
2726 | val = dapm_kcontrol_get_value(kcontrol); | |
2727 | mutex_unlock(&card->dapm_mutex); | |
2728 | ||
da602ab8 | 2729 | if (invert) |
57295073 LPC |
2730 | ucontrol->value.integer.value[0] = max - val; |
2731 | else | |
2732 | ucontrol->value.integer.value[0] = val; | |
2b97eabc RP |
2733 | |
2734 | return 0; | |
2735 | } | |
2736 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw); | |
2737 | ||
2738 | /** | |
2739 | * snd_soc_dapm_put_volsw - dapm mixer set callback | |
2740 | * @kcontrol: mixer control | |
ac11a2b3 | 2741 | * @ucontrol: control element information |
2b97eabc RP |
2742 | * |
2743 | * Callback to set the value of a dapm mixer control. | |
2744 | * | |
2745 | * Returns 0 for success. | |
2746 | */ | |
2747 | int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, | |
2748 | struct snd_ctl_elem_value *ucontrol) | |
2749 | { | |
eee5d7f9 | 2750 | struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol); |
a73fb2df | 2751 | struct snd_soc_card *card = codec->card; |
4eaa9819 JS |
2752 | struct soc_mixer_control *mc = |
2753 | (struct soc_mixer_control *)kcontrol->private_value; | |
249ce138 | 2754 | int reg = mc->reg; |
815ecf8d | 2755 | unsigned int shift = mc->shift; |
4eaa9819 | 2756 | int max = mc->max; |
815ecf8d JS |
2757 | unsigned int mask = (1 << fls(max)) - 1; |
2758 | unsigned int invert = mc->invert; | |
e9cf7049 | 2759 | unsigned int val; |
18626c7e | 2760 | int connect, change, reg_change = 0; |
97404f2e | 2761 | struct snd_soc_dapm_update update; |
52765976 | 2762 | int ret = 0; |
2b97eabc | 2763 | |
da602ab8 | 2764 | if (snd_soc_volsw_is_stereo(mc)) |
eee5d7f9 | 2765 | dev_warn(codec->dapm.dev, |
30a6a1a4 | 2766 | "ASoC: Control '%s' is stereo, which is not supported\n", |
da602ab8 BT |
2767 | kcontrol->id.name); |
2768 | ||
2b97eabc | 2769 | val = (ucontrol->value.integer.value[0] & mask); |
8a720718 | 2770 | connect = !!val; |
2b97eabc RP |
2771 | |
2772 | if (invert) | |
a7a4ac86 | 2773 | val = max - val; |
2b97eabc | 2774 | |
3cd04343 | 2775 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
2b97eabc | 2776 | |
249ce138 | 2777 | change = dapm_kcontrol_set_value(kcontrol, val); |
97404f2e | 2778 | |
18626c7e JN |
2779 | if (reg != SND_SOC_NOPM) { |
2780 | mask = mask << shift; | |
2781 | val = val << shift; | |
2782 | ||
2783 | reg_change = snd_soc_test_bits(codec, reg, mask, val); | |
2784 | } | |
2785 | ||
2786 | if (change || reg_change) { | |
2787 | if (reg_change) { | |
2788 | update.kcontrol = kcontrol; | |
2789 | update.reg = reg; | |
2790 | update.mask = mask; | |
2791 | update.val = val; | |
2792 | card->update = &update; | |
249ce138 | 2793 | } |
18626c7e | 2794 | change |= reg_change; |
97404f2e | 2795 | |
52765976 | 2796 | ret = soc_dapm_mixer_update_power(card, kcontrol, connect); |
fafd2176 | 2797 | |
564c6504 | 2798 | card->update = NULL; |
283375ce MB |
2799 | } |
2800 | ||
a73fb2df | 2801 | mutex_unlock(&card->dapm_mutex); |
52765976 NC |
2802 | |
2803 | if (ret > 0) | |
2804 | soc_dpcm_runtime_update(card); | |
2805 | ||
56a67834 | 2806 | return change; |
2b97eabc RP |
2807 | } |
2808 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw); | |
2809 | ||
2810 | /** | |
2811 | * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback | |
2812 | * @kcontrol: mixer control | |
ac11a2b3 | 2813 | * @ucontrol: control element information |
2b97eabc RP |
2814 | * |
2815 | * Callback to get the value of a dapm enumerated double mixer control. | |
2816 | * | |
2817 | * Returns 0 for success. | |
2818 | */ | |
2819 | int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol, | |
2820 | struct snd_ctl_elem_value *ucontrol) | |
2821 | { | |
eee5d7f9 | 2822 | struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol); |
2b97eabc | 2823 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
3727b496 | 2824 | unsigned int reg_val, val; |
52765976 | 2825 | |
236aaa68 LPC |
2826 | if (e->reg != SND_SOC_NOPM) |
2827 | reg_val = snd_soc_read(codec, e->reg); | |
2828 | else | |
2829 | reg_val = dapm_kcontrol_get_value(kcontrol); | |
2e72f8e3 | 2830 | |
2e72f8e3 | 2831 | val = (reg_val >> e->shift_l) & e->mask; |
3727b496 | 2832 | ucontrol->value.enumerated.item[0] = snd_soc_enum_val_to_item(e, val); |
2e72f8e3 PU |
2833 | if (e->shift_l != e->shift_r) { |
2834 | val = (reg_val >> e->shift_r) & e->mask; | |
3727b496 LPC |
2835 | val = snd_soc_enum_val_to_item(e, val); |
2836 | ucontrol->value.enumerated.item[1] = val; | |
2e72f8e3 PU |
2837 | } |
2838 | ||
2839 | return 0; | |
2840 | } | |
2b97eabc | 2841 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double); |
2e72f8e3 PU |
2842 | |
2843 | /** | |
2b97eabc | 2844 | * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback |
2e72f8e3 PU |
2845 | * @kcontrol: mixer control |
2846 | * @ucontrol: control element information | |
2847 | * | |
2b97eabc | 2848 | * Callback to set the value of a dapm enumerated double mixer control. |
2e72f8e3 PU |
2849 | * |
2850 | * Returns 0 for success. | |
2851 | */ | |
2b97eabc | 2852 | int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, |
2e72f8e3 PU |
2853 | struct snd_ctl_elem_value *ucontrol) |
2854 | { | |
cf7c1de2 | 2855 | struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol); |
a73fb2df | 2856 | struct snd_soc_card *card = codec->card; |
74155556 | 2857 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
3727b496 LPC |
2858 | unsigned int *item = ucontrol->value.enumerated.item; |
2859 | unsigned int val, change; | |
46f5822f | 2860 | unsigned int mask; |
97404f2e | 2861 | struct snd_soc_dapm_update update; |
52765976 | 2862 | int ret = 0; |
2e72f8e3 | 2863 | |
3727b496 | 2864 | if (item[0] >= e->items) |
2e72f8e3 | 2865 | return -EINVAL; |
3727b496 LPC |
2866 | |
2867 | val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l; | |
2e72f8e3 PU |
2868 | mask = e->mask << e->shift_l; |
2869 | if (e->shift_l != e->shift_r) { | |
3727b496 | 2870 | if (item[1] > e->items) |
2e72f8e3 | 2871 | return -EINVAL; |
3727b496 | 2872 | val |= snd_soc_enum_item_to_val(e, item[1]) << e->shift_l; |
2e72f8e3 PU |
2873 | mask |= e->mask << e->shift_r; |
2874 | } | |
2875 | ||
3cd04343 | 2876 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
fafd2176 | 2877 | |
236aaa68 LPC |
2878 | if (e->reg != SND_SOC_NOPM) |
2879 | change = snd_soc_test_bits(codec, e->reg, mask, val); | |
2880 | else | |
2881 | change = dapm_kcontrol_set_value(kcontrol, val); | |
2882 | ||
fafd2176 | 2883 | if (change) { |
236aaa68 LPC |
2884 | if (e->reg != SND_SOC_NOPM) { |
2885 | update.kcontrol = kcontrol; | |
2886 | update.reg = e->reg; | |
2887 | update.mask = mask; | |
2888 | update.val = val; | |
2889 | card->update = &update; | |
2890 | } | |
1642e3d4 | 2891 | |
3727b496 | 2892 | ret = soc_dapm_mux_update_power(card, kcontrol, item[0], e); |
fafd2176 | 2893 | |
564c6504 | 2894 | card->update = NULL; |
fafd2176 | 2895 | } |
2e72f8e3 | 2896 | |
a73fb2df | 2897 | mutex_unlock(&card->dapm_mutex); |
52765976 NC |
2898 | |
2899 | if (ret > 0) | |
2900 | soc_dpcm_runtime_update(card); | |
2901 | ||
97404f2e | 2902 | return change; |
2e72f8e3 | 2903 | } |
2b97eabc | 2904 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double); |
2e72f8e3 | 2905 | |
8b37dbd2 MB |
2906 | /** |
2907 | * snd_soc_dapm_info_pin_switch - Info for a pin switch | |
2908 | * | |
2909 | * @kcontrol: mixer control | |
2910 | * @uinfo: control element information | |
2911 | * | |
2912 | * Callback to provide information about a pin switch control. | |
2913 | */ | |
2914 | int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol, | |
2915 | struct snd_ctl_elem_info *uinfo) | |
2916 | { | |
2917 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
2918 | uinfo->count = 1; | |
2919 | uinfo->value.integer.min = 0; | |
2920 | uinfo->value.integer.max = 1; | |
2921 | ||
2922 | return 0; | |
2923 | } | |
2924 | EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch); | |
2925 | ||
2926 | /** | |
2927 | * snd_soc_dapm_get_pin_switch - Get information for a pin switch | |
2928 | * | |
2929 | * @kcontrol: mixer control | |
2930 | * @ucontrol: Value | |
2931 | */ | |
2932 | int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol, | |
2933 | struct snd_ctl_elem_value *ucontrol) | |
2934 | { | |
48a8c394 | 2935 | struct snd_soc_card *card = snd_kcontrol_chip(kcontrol); |
8b37dbd2 MB |
2936 | const char *pin = (const char *)kcontrol->private_value; |
2937 | ||
3cd04343 | 2938 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
8b37dbd2 MB |
2939 | |
2940 | ucontrol->value.integer.value[0] = | |
48a8c394 | 2941 | snd_soc_dapm_get_pin_status(&card->dapm, pin); |
8b37dbd2 | 2942 | |
a73fb2df | 2943 | mutex_unlock(&card->dapm_mutex); |
8b37dbd2 MB |
2944 | |
2945 | return 0; | |
2946 | } | |
2947 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch); | |
2948 | ||
2949 | /** | |
2950 | * snd_soc_dapm_put_pin_switch - Set information for a pin switch | |
2951 | * | |
2952 | * @kcontrol: mixer control | |
2953 | * @ucontrol: Value | |
2954 | */ | |
2955 | int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol, | |
2956 | struct snd_ctl_elem_value *ucontrol) | |
2957 | { | |
48a8c394 | 2958 | struct snd_soc_card *card = snd_kcontrol_chip(kcontrol); |
8b37dbd2 MB |
2959 | const char *pin = (const char *)kcontrol->private_value; |
2960 | ||
8b37dbd2 | 2961 | if (ucontrol->value.integer.value[0]) |
48a8c394 | 2962 | snd_soc_dapm_enable_pin(&card->dapm, pin); |
8b37dbd2 | 2963 | else |
48a8c394 | 2964 | snd_soc_dapm_disable_pin(&card->dapm, pin); |
8b37dbd2 | 2965 | |
a73fb2df | 2966 | snd_soc_dapm_sync(&card->dapm); |
8b37dbd2 MB |
2967 | return 0; |
2968 | } | |
2969 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch); | |
2970 | ||
5ba06fc9 MB |
2971 | static struct snd_soc_dapm_widget * |
2972 | snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm, | |
2973 | const struct snd_soc_dapm_widget *widget) | |
2b97eabc RP |
2974 | { |
2975 | struct snd_soc_dapm_widget *w; | |
94f99c87 | 2976 | const char *prefix; |
62ea874a | 2977 | int ret; |
2b97eabc RP |
2978 | |
2979 | if ((w = dapm_cnew_widget(widget)) == NULL) | |
5ba06fc9 | 2980 | return NULL; |
2b97eabc | 2981 | |
62ea874a MB |
2982 | switch (w->id) { |
2983 | case snd_soc_dapm_regulator_supply: | |
a3cc056b LG |
2984 | w->regulator = devm_regulator_get(dapm->dev, w->name); |
2985 | if (IS_ERR(w->regulator)) { | |
2986 | ret = PTR_ERR(w->regulator); | |
30a6a1a4 | 2987 | dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n", |
62ea874a | 2988 | w->name, ret); |
5ba06fc9 | 2989 | return NULL; |
62ea874a | 2990 | } |
8784c77a | 2991 | |
de9ba98b | 2992 | if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) { |
8784c77a MB |
2993 | ret = regulator_allow_bypass(w->regulator, true); |
2994 | if (ret != 0) | |
2995 | dev_warn(w->dapm->dev, | |
30686c35 | 2996 | "ASoC: Failed to bypass %s: %d\n", |
8784c77a MB |
2997 | w->name, ret); |
2998 | } | |
62ea874a | 2999 | break; |
d7e7eb91 | 3000 | case snd_soc_dapm_clock_supply: |
165961ef | 3001 | #ifdef CONFIG_CLKDEV_LOOKUP |
695594f1 | 3002 | w->clk = devm_clk_get(dapm->dev, w->name); |
d7e7eb91 OL |
3003 | if (IS_ERR(w->clk)) { |
3004 | ret = PTR_ERR(w->clk); | |
30a6a1a4 | 3005 | dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n", |
d7e7eb91 OL |
3006 | w->name, ret); |
3007 | return NULL; | |
3008 | } | |
ec02995a MB |
3009 | #else |
3010 | return NULL; | |
3011 | #endif | |
d7e7eb91 | 3012 | break; |
62ea874a MB |
3013 | default: |
3014 | break; | |
3015 | } | |
2b97eabc | 3016 | |
94f99c87 LPC |
3017 | prefix = soc_dapm_prefix(dapm); |
3018 | if (prefix) | |
3019 | w->name = kasprintf(GFP_KERNEL, "%s %s", prefix, widget->name); | |
2b581074 LPC |
3020 | else |
3021 | w->name = kasprintf(GFP_KERNEL, "%s", widget->name); | |
3022 | ||
ead9b919 JN |
3023 | if (w->name == NULL) { |
3024 | kfree(w); | |
5ba06fc9 | 3025 | return NULL; |
ead9b919 | 3026 | } |
ead9b919 | 3027 | |
7ca3a18b MB |
3028 | switch (w->id) { |
3029 | case snd_soc_dapm_switch: | |
3030 | case snd_soc_dapm_mixer: | |
3031 | case snd_soc_dapm_mixer_named_ctl: | |
3032 | w->power_check = dapm_generic_check_power; | |
3033 | break; | |
3034 | case snd_soc_dapm_mux: | |
7ca3a18b MB |
3035 | w->power_check = dapm_generic_check_power; |
3036 | break; | |
4616274d | 3037 | case snd_soc_dapm_dai_out: |
7ca3a18b MB |
3038 | w->power_check = dapm_adc_check_power; |
3039 | break; | |
4616274d | 3040 | case snd_soc_dapm_dai_in: |
7ca3a18b MB |
3041 | w->power_check = dapm_dac_check_power; |
3042 | break; | |
63c69a6e MB |
3043 | case snd_soc_dapm_adc: |
3044 | case snd_soc_dapm_aif_out: | |
3045 | case snd_soc_dapm_dac: | |
3046 | case snd_soc_dapm_aif_in: | |
7ca3a18b MB |
3047 | case snd_soc_dapm_pga: |
3048 | case snd_soc_dapm_out_drv: | |
3049 | case snd_soc_dapm_input: | |
3050 | case snd_soc_dapm_output: | |
3051 | case snd_soc_dapm_micbias: | |
3052 | case snd_soc_dapm_spk: | |
3053 | case snd_soc_dapm_hp: | |
3054 | case snd_soc_dapm_mic: | |
3055 | case snd_soc_dapm_line: | |
c74184ed | 3056 | case snd_soc_dapm_dai_link: |
7ca3a18b MB |
3057 | w->power_check = dapm_generic_check_power; |
3058 | break; | |
3059 | case snd_soc_dapm_supply: | |
62ea874a | 3060 | case snd_soc_dapm_regulator_supply: |
d7e7eb91 | 3061 | case snd_soc_dapm_clock_supply: |
57295073 | 3062 | case snd_soc_dapm_kcontrol: |
7ca3a18b MB |
3063 | w->power_check = dapm_supply_check_power; |
3064 | break; | |
3065 | default: | |
3066 | w->power_check = dapm_always_on_check_power; | |
3067 | break; | |
3068 | } | |
3069 | ||
ce6120cc LG |
3070 | w->dapm = dapm; |
3071 | w->codec = dapm->codec; | |
b7950641 | 3072 | w->platform = dapm->platform; |
2b97eabc RP |
3073 | INIT_LIST_HEAD(&w->sources); |
3074 | INIT_LIST_HEAD(&w->sinks); | |
3075 | INIT_LIST_HEAD(&w->list); | |
db432b41 | 3076 | INIT_LIST_HEAD(&w->dirty); |
97c866de | 3077 | list_add(&w->list, &dapm->card->widgets); |
2b97eabc RP |
3078 | |
3079 | /* machine layer set ups unconnected pins and insertions */ | |
3080 | w->connected = 1; | |
5ba06fc9 | 3081 | return w; |
2b97eabc | 3082 | } |
2b97eabc | 3083 | |
4ba1327a MB |
3084 | /** |
3085 | * snd_soc_dapm_new_controls - create new dapm controls | |
ce6120cc | 3086 | * @dapm: DAPM context |
4ba1327a MB |
3087 | * @widget: widget array |
3088 | * @num: number of widgets | |
3089 | * | |
3090 | * Creates new DAPM controls based upon the templates. | |
3091 | * | |
3092 | * Returns 0 for success else error. | |
3093 | */ | |
ce6120cc | 3094 | int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm, |
4ba1327a MB |
3095 | const struct snd_soc_dapm_widget *widget, |
3096 | int num) | |
3097 | { | |
5ba06fc9 MB |
3098 | struct snd_soc_dapm_widget *w; |
3099 | int i; | |
60884c27 | 3100 | int ret = 0; |
4ba1327a | 3101 | |
a73fb2df | 3102 | mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT); |
4ba1327a | 3103 | for (i = 0; i < num; i++) { |
5ba06fc9 MB |
3104 | w = snd_soc_dapm_new_control(dapm, widget); |
3105 | if (!w) { | |
f7d41ae8 | 3106 | dev_err(dapm->dev, |
5ba06fc9 MB |
3107 | "ASoC: Failed to create DAPM control %s\n", |
3108 | widget->name); | |
60884c27 DC |
3109 | ret = -ENOMEM; |
3110 | break; | |
b8b33cb5 | 3111 | } |
4ba1327a MB |
3112 | widget++; |
3113 | } | |
a73fb2df | 3114 | mutex_unlock(&dapm->card->dapm_mutex); |
60884c27 | 3115 | return ret; |
4ba1327a MB |
3116 | } |
3117 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls); | |
3118 | ||
c74184ed MB |
3119 | static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w, |
3120 | struct snd_kcontrol *kcontrol, int event) | |
3121 | { | |
3122 | struct snd_soc_dapm_path *source_p, *sink_p; | |
3123 | struct snd_soc_dai *source, *sink; | |
3124 | const struct snd_soc_pcm_stream *config = w->params; | |
3125 | struct snd_pcm_substream substream; | |
9747cec2 | 3126 | struct snd_pcm_hw_params *params = NULL; |
c74184ed MB |
3127 | u64 fmt; |
3128 | int ret; | |
3129 | ||
bf4edea8 TI |
3130 | if (WARN_ON(!config) || |
3131 | WARN_ON(list_empty(&w->sources) || list_empty(&w->sinks))) | |
3132 | return -EINVAL; | |
c74184ed MB |
3133 | |
3134 | /* We only support a single source and sink, pick the first */ | |
3135 | source_p = list_first_entry(&w->sources, struct snd_soc_dapm_path, | |
3136 | list_sink); | |
3137 | sink_p = list_first_entry(&w->sinks, struct snd_soc_dapm_path, | |
3138 | list_source); | |
3139 | ||
bf4edea8 TI |
3140 | if (WARN_ON(!source_p || !sink_p) || |
3141 | WARN_ON(!sink_p->source || !source_p->sink) || | |
3142 | WARN_ON(!source_p->source || !sink_p->sink)) | |
3143 | return -EINVAL; | |
c74184ed MB |
3144 | |
3145 | source = source_p->source->priv; | |
3146 | sink = sink_p->sink->priv; | |
3147 | ||
3148 | /* Be a little careful as we don't want to overflow the mask array */ | |
3149 | if (config->formats) { | |
3150 | fmt = ffs(config->formats) - 1; | |
3151 | } else { | |
30a6a1a4 | 3152 | dev_warn(w->dapm->dev, "ASoC: Invalid format %llx specified\n", |
c74184ed MB |
3153 | config->formats); |
3154 | fmt = 0; | |
3155 | } | |
3156 | ||
3157 | /* Currently very limited parameter selection */ | |
9747cec2 MB |
3158 | params = kzalloc(sizeof(*params), GFP_KERNEL); |
3159 | if (!params) { | |
3160 | ret = -ENOMEM; | |
3161 | goto out; | |
3162 | } | |
3163 | snd_mask_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), fmt); | |
c74184ed | 3164 | |
9747cec2 | 3165 | hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->min = |
c74184ed | 3166 | config->rate_min; |
9747cec2 | 3167 | hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->max = |
c74184ed MB |
3168 | config->rate_max; |
3169 | ||
9747cec2 | 3170 | hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->min |
c74184ed | 3171 | = config->channels_min; |
9747cec2 | 3172 | hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max |
c74184ed MB |
3173 | = config->channels_max; |
3174 | ||
3175 | memset(&substream, 0, sizeof(substream)); | |
3176 | ||
3177 | switch (event) { | |
3178 | case SND_SOC_DAPM_PRE_PMU: | |
3179 | if (source->driver->ops && source->driver->ops->hw_params) { | |
3180 | substream.stream = SNDRV_PCM_STREAM_CAPTURE; | |
3181 | ret = source->driver->ops->hw_params(&substream, | |
9747cec2 | 3182 | params, source); |
c74184ed MB |
3183 | if (ret != 0) { |
3184 | dev_err(source->dev, | |
30a6a1a4 | 3185 | "ASoC: hw_params() failed: %d\n", ret); |
9747cec2 | 3186 | goto out; |
c74184ed MB |
3187 | } |
3188 | } | |
3189 | ||
3190 | if (sink->driver->ops && sink->driver->ops->hw_params) { | |
3191 | substream.stream = SNDRV_PCM_STREAM_PLAYBACK; | |
9747cec2 | 3192 | ret = sink->driver->ops->hw_params(&substream, params, |
c74184ed MB |
3193 | sink); |
3194 | if (ret != 0) { | |
3195 | dev_err(sink->dev, | |
30a6a1a4 | 3196 | "ASoC: hw_params() failed: %d\n", ret); |
9747cec2 | 3197 | goto out; |
c74184ed MB |
3198 | } |
3199 | } | |
3200 | break; | |
3201 | ||
3202 | case SND_SOC_DAPM_POST_PMU: | |
da18396f MB |
3203 | ret = snd_soc_dai_digital_mute(sink, 0, |
3204 | SNDRV_PCM_STREAM_PLAYBACK); | |
c74184ed | 3205 | if (ret != 0 && ret != -ENOTSUPP) |
30a6a1a4 | 3206 | dev_warn(sink->dev, "ASoC: Failed to unmute: %d\n", ret); |
9747cec2 | 3207 | ret = 0; |
c74184ed MB |
3208 | break; |
3209 | ||
3210 | case SND_SOC_DAPM_PRE_PMD: | |
da18396f MB |
3211 | ret = snd_soc_dai_digital_mute(sink, 1, |
3212 | SNDRV_PCM_STREAM_PLAYBACK); | |
c74184ed | 3213 | if (ret != 0 && ret != -ENOTSUPP) |
30a6a1a4 | 3214 | dev_warn(sink->dev, "ASoC: Failed to mute: %d\n", ret); |
9747cec2 | 3215 | ret = 0; |
c74184ed MB |
3216 | break; |
3217 | ||
3218 | default: | |
a6ed0608 | 3219 | WARN(1, "Unknown event %d\n", event); |
c74184ed MB |
3220 | return -EINVAL; |
3221 | } | |
3222 | ||
9747cec2 MB |
3223 | out: |
3224 | kfree(params); | |
3225 | return ret; | |
c74184ed MB |
3226 | } |
3227 | ||
3228 | int snd_soc_dapm_new_pcm(struct snd_soc_card *card, | |
3229 | const struct snd_soc_pcm_stream *params, | |
3230 | struct snd_soc_dapm_widget *source, | |
3231 | struct snd_soc_dapm_widget *sink) | |
3232 | { | |
c74184ed MB |
3233 | struct snd_soc_dapm_widget template; |
3234 | struct snd_soc_dapm_widget *w; | |
3235 | size_t len; | |
3236 | char *link_name; | |
fe83897f | 3237 | int ret; |
c74184ed MB |
3238 | |
3239 | len = strlen(source->name) + strlen(sink->name) + 2; | |
3240 | link_name = devm_kzalloc(card->dev, len, GFP_KERNEL); | |
3241 | if (!link_name) | |
3242 | return -ENOMEM; | |
3243 | snprintf(link_name, len, "%s-%s", source->name, sink->name); | |
3244 | ||
3245 | memset(&template, 0, sizeof(template)); | |
3246 | template.reg = SND_SOC_NOPM; | |
3247 | template.id = snd_soc_dapm_dai_link; | |
3248 | template.name = link_name; | |
3249 | template.event = snd_soc_dai_link_event; | |
3250 | template.event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU | | |
3251 | SND_SOC_DAPM_PRE_PMD; | |
3252 | ||
30a6a1a4 | 3253 | dev_dbg(card->dev, "ASoC: adding %s widget\n", link_name); |
c74184ed MB |
3254 | |
3255 | w = snd_soc_dapm_new_control(&card->dapm, &template); | |
3256 | if (!w) { | |
30a6a1a4 | 3257 | dev_err(card->dev, "ASoC: Failed to create %s widget\n", |
c74184ed MB |
3258 | link_name); |
3259 | return -ENOMEM; | |
3260 | } | |
3261 | ||
3262 | w->params = params; | |
3263 | ||
fe83897f LPC |
3264 | ret = snd_soc_dapm_add_path(&card->dapm, source, w, NULL, NULL); |
3265 | if (ret) | |
3266 | return ret; | |
3267 | return snd_soc_dapm_add_path(&card->dapm, w, sink, NULL, NULL); | |
c74184ed MB |
3268 | } |
3269 | ||
888df395 MB |
3270 | int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context *dapm, |
3271 | struct snd_soc_dai *dai) | |
2b97eabc | 3272 | { |
888df395 | 3273 | struct snd_soc_dapm_widget template; |
2b97eabc RP |
3274 | struct snd_soc_dapm_widget *w; |
3275 | ||
888df395 MB |
3276 | WARN_ON(dapm->dev != dai->dev); |
3277 | ||
3278 | memset(&template, 0, sizeof(template)); | |
3279 | template.reg = SND_SOC_NOPM; | |
3280 | ||
3281 | if (dai->driver->playback.stream_name) { | |
4616274d | 3282 | template.id = snd_soc_dapm_dai_in; |
888df395 MB |
3283 | template.name = dai->driver->playback.stream_name; |
3284 | template.sname = dai->driver->playback.stream_name; | |
3285 | ||
30a6a1a4 | 3286 | dev_dbg(dai->dev, "ASoC: adding %s widget\n", |
888df395 MB |
3287 | template.name); |
3288 | ||
3289 | w = snd_soc_dapm_new_control(dapm, &template); | |
3290 | if (!w) { | |
30a6a1a4 | 3291 | dev_err(dapm->dev, "ASoC: Failed to create %s widget\n", |
888df395 | 3292 | dai->driver->playback.stream_name); |
298402a3 | 3293 | return -ENOMEM; |
888df395 MB |
3294 | } |
3295 | ||
3296 | w->priv = dai; | |
3297 | dai->playback_widget = w; | |
3298 | } | |
3299 | ||
3300 | if (dai->driver->capture.stream_name) { | |
4616274d | 3301 | template.id = snd_soc_dapm_dai_out; |
888df395 MB |
3302 | template.name = dai->driver->capture.stream_name; |
3303 | template.sname = dai->driver->capture.stream_name; | |
3304 | ||
30a6a1a4 | 3305 | dev_dbg(dai->dev, "ASoC: adding %s widget\n", |
888df395 MB |
3306 | template.name); |
3307 | ||
3308 | w = snd_soc_dapm_new_control(dapm, &template); | |
3309 | if (!w) { | |
30a6a1a4 | 3310 | dev_err(dapm->dev, "ASoC: Failed to create %s widget\n", |
888df395 | 3311 | dai->driver->capture.stream_name); |
298402a3 | 3312 | return -ENOMEM; |
888df395 MB |
3313 | } |
3314 | ||
3315 | w->priv = dai; | |
3316 | dai->capture_widget = w; | |
3317 | } | |
3318 | ||
3319 | return 0; | |
3320 | } | |
3321 | ||
3322 | int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card) | |
3323 | { | |
3324 | struct snd_soc_dapm_widget *dai_w, *w; | |
0f9bd7b1 | 3325 | struct snd_soc_dapm_widget *src, *sink; |
888df395 | 3326 | struct snd_soc_dai *dai; |
888df395 MB |
3327 | |
3328 | /* For each DAI widget... */ | |
3329 | list_for_each_entry(dai_w, &card->widgets, list) { | |
4616274d MB |
3330 | switch (dai_w->id) { |
3331 | case snd_soc_dapm_dai_in: | |
3332 | case snd_soc_dapm_dai_out: | |
3333 | break; | |
3334 | default: | |
2b97eabc | 3335 | continue; |
4616274d | 3336 | } |
888df395 MB |
3337 | |
3338 | dai = dai_w->priv; | |
3339 | ||
3340 | /* ...find all widgets with the same stream and link them */ | |
3341 | list_for_each_entry(w, &card->widgets, list) { | |
3342 | if (w->dapm != dai_w->dapm) | |
3343 | continue; | |
3344 | ||
4616274d MB |
3345 | switch (w->id) { |
3346 | case snd_soc_dapm_dai_in: | |
3347 | case snd_soc_dapm_dai_out: | |
888df395 | 3348 | continue; |
4616274d MB |
3349 | default: |
3350 | break; | |
3351 | } | |
888df395 | 3352 | |
19c2c5f5 | 3353 | if (!w->sname || !strstr(w->sname, dai_w->name)) |
888df395 MB |
3354 | continue; |
3355 | ||
0f9bd7b1 LPC |
3356 | if (dai_w->id == snd_soc_dapm_dai_in) { |
3357 | src = dai_w; | |
3358 | sink = w; | |
3359 | } else { | |
3360 | src = w; | |
3361 | sink = dai_w; | |
2b97eabc | 3362 | } |
0f9bd7b1 LPC |
3363 | dev_dbg(dai->dev, "%s -> %s\n", src->name, sink->name); |
3364 | snd_soc_dapm_add_path(w->dapm, src, sink, NULL, NULL); | |
2b97eabc RP |
3365 | } |
3366 | } | |
2b97eabc | 3367 | |
888df395 MB |
3368 | return 0; |
3369 | } | |
64a648c2 | 3370 | |
b893ea5f LG |
3371 | void snd_soc_dapm_connect_dai_link_widgets(struct snd_soc_card *card) |
3372 | { | |
3373 | struct snd_soc_pcm_runtime *rtd = card->rtd; | |
9887c20b | 3374 | struct snd_soc_dapm_widget *sink, *source; |
b893ea5f | 3375 | struct snd_soc_dai *cpu_dai, *codec_dai; |
b893ea5f LG |
3376 | int i; |
3377 | ||
b893ea5f LG |
3378 | /* for each BE DAI link... */ |
3379 | for (i = 0; i < card->num_rtd; i++) { | |
3380 | rtd = &card->rtd[i]; | |
3381 | cpu_dai = rtd->cpu_dai; | |
3382 | codec_dai = rtd->codec_dai; | |
3383 | ||
ca5106ae LPC |
3384 | /* |
3385 | * dynamic FE links have no fixed DAI mapping. | |
3386 | * CODEC<->CODEC links have no direct connection. | |
3387 | */ | |
3388 | if (rtd->dai_link->dynamic || rtd->dai_link->params) | |
b893ea5f LG |
3389 | continue; |
3390 | ||
3391 | /* there is no point in connecting BE DAI links with dummies */ | |
3392 | if (snd_soc_dai_is_dummy(codec_dai) || | |
3393 | snd_soc_dai_is_dummy(cpu_dai)) | |
3394 | continue; | |
3395 | ||
3396 | /* connect BE DAI playback if widgets are valid */ | |
3397 | if (codec_dai->playback_widget && cpu_dai->playback_widget) { | |
9887c20b LPC |
3398 | source = cpu_dai->playback_widget; |
3399 | sink = codec_dai->playback_widget; | |
b893ea5f | 3400 | dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n", |
f4333203 LPC |
3401 | cpu_dai->component->name, source->name, |
3402 | codec_dai->component->name, sink->name); | |
b893ea5f | 3403 | |
9887c20b LPC |
3404 | snd_soc_dapm_add_path(&card->dapm, source, sink, |
3405 | NULL, NULL); | |
b893ea5f LG |
3406 | } |
3407 | ||
3408 | /* connect BE DAI capture if widgets are valid */ | |
3409 | if (codec_dai->capture_widget && cpu_dai->capture_widget) { | |
9887c20b LPC |
3410 | source = codec_dai->capture_widget; |
3411 | sink = cpu_dai->capture_widget; | |
b893ea5f | 3412 | dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n", |
f4333203 LPC |
3413 | codec_dai->component->name, source->name, |
3414 | cpu_dai->component->name, sink->name); | |
b893ea5f | 3415 | |
9887c20b LPC |
3416 | snd_soc_dapm_add_path(&card->dapm, source, sink, |
3417 | NULL, NULL); | |
b893ea5f | 3418 | } |
b893ea5f LG |
3419 | } |
3420 | } | |
3421 | ||
c471fdd1 | 3422 | static void soc_dapm_dai_stream_event(struct snd_soc_dai *dai, int stream, |
d9b0951b | 3423 | int event) |
2b97eabc | 3424 | { |
c471fdd1 | 3425 | struct snd_soc_dapm_widget *w; |
7bd3a6f3 | 3426 | |
c471fdd1 LPC |
3427 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) |
3428 | w = dai->playback_widget; | |
3429 | else | |
3430 | w = dai->capture_widget; | |
fe360685 | 3431 | |
c471fdd1 LPC |
3432 | if (w) { |
3433 | dapm_mark_dirty(w, "stream event"); | |
d9b0951b LG |
3434 | |
3435 | switch (event) { | |
3436 | case SND_SOC_DAPM_STREAM_START: | |
c471fdd1 | 3437 | w->active = 1; |
d9b0951b LG |
3438 | break; |
3439 | case SND_SOC_DAPM_STREAM_STOP: | |
c471fdd1 | 3440 | w->active = 0; |
d9b0951b LG |
3441 | break; |
3442 | case SND_SOC_DAPM_STREAM_SUSPEND: | |
3443 | case SND_SOC_DAPM_STREAM_RESUME: | |
3444 | case SND_SOC_DAPM_STREAM_PAUSE_PUSH: | |
3445 | case SND_SOC_DAPM_STREAM_PAUSE_RELEASE: | |
3446 | break; | |
3447 | } | |
3448 | } | |
c471fdd1 | 3449 | } |
d9b0951b | 3450 | |
c471fdd1 LPC |
3451 | static void soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream, |
3452 | int event) | |
3453 | { | |
3454 | soc_dapm_dai_stream_event(rtd->cpu_dai, stream, event); | |
3455 | soc_dapm_dai_stream_event(rtd->codec_dai, stream, event); | |
2b97eabc | 3456 | |
95dd5cd6 | 3457 | dapm_power_widgets(rtd->card, event); |
ce6120cc LG |
3458 | } |
3459 | ||
3460 | /** | |
3461 | * snd_soc_dapm_stream_event - send a stream event to the dapm core | |
3462 | * @rtd: PCM runtime data | |
3463 | * @stream: stream name | |
3464 | * @event: stream event | |
3465 | * | |
3466 | * Sends a stream event to the dapm core. The core then makes any | |
3467 | * necessary widget power changes. | |
3468 | * | |
3469 | * Returns 0 for success else error. | |
3470 | */ | |
d9b0951b LG |
3471 | void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream, |
3472 | int event) | |
ce6120cc | 3473 | { |
a73fb2df | 3474 | struct snd_soc_card *card = rtd->card; |
ce6120cc | 3475 | |
3cd04343 | 3476 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
d9b0951b | 3477 | soc_dapm_stream_event(rtd, stream, event); |
a73fb2df | 3478 | mutex_unlock(&card->dapm_mutex); |
2b97eabc | 3479 | } |
2b97eabc | 3480 | |
11391100 CK |
3481 | /** |
3482 | * snd_soc_dapm_enable_pin_unlocked - enable pin. | |
3483 | * @dapm: DAPM context | |
3484 | * @pin: pin name | |
3485 | * | |
3486 | * Enables input/output pin and its parents or children widgets iff there is | |
3487 | * a valid audio route and active audio stream. | |
3488 | * | |
3489 | * Requires external locking. | |
3490 | * | |
3491 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
3492 | * do any widget power switching. | |
3493 | */ | |
3494 | int snd_soc_dapm_enable_pin_unlocked(struct snd_soc_dapm_context *dapm, | |
3495 | const char *pin) | |
3496 | { | |
3497 | return snd_soc_dapm_set_pin(dapm, pin, 1); | |
3498 | } | |
3499 | EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin_unlocked); | |
3500 | ||
2b97eabc | 3501 | /** |
a5302181 | 3502 | * snd_soc_dapm_enable_pin - enable pin. |
ce6120cc | 3503 | * @dapm: DAPM context |
a5302181 | 3504 | * @pin: pin name |
2b97eabc | 3505 | * |
74b8f955 | 3506 | * Enables input/output pin and its parents or children widgets iff there is |
a5302181 | 3507 | * a valid audio route and active audio stream. |
11391100 | 3508 | * |
a5302181 LG |
3509 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to |
3510 | * do any widget power switching. | |
2b97eabc | 3511 | */ |
ce6120cc | 3512 | int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin) |
2b97eabc | 3513 | { |
11391100 CK |
3514 | int ret; |
3515 | ||
3516 | mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); | |
3517 | ||
3518 | ret = snd_soc_dapm_set_pin(dapm, pin, 1); | |
3519 | ||
3520 | mutex_unlock(&dapm->card->dapm_mutex); | |
3521 | ||
3522 | return ret; | |
a5302181 LG |
3523 | } |
3524 | EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin); | |
2b97eabc | 3525 | |
da34183e | 3526 | /** |
11391100 | 3527 | * snd_soc_dapm_force_enable_pin_unlocked - force a pin to be enabled |
ce6120cc | 3528 | * @dapm: DAPM context |
da34183e MB |
3529 | * @pin: pin name |
3530 | * | |
3531 | * Enables input/output pin regardless of any other state. This is | |
3532 | * intended for use with microphone bias supplies used in microphone | |
3533 | * jack detection. | |
3534 | * | |
11391100 CK |
3535 | * Requires external locking. |
3536 | * | |
da34183e MB |
3537 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to |
3538 | * do any widget power switching. | |
3539 | */ | |
11391100 CK |
3540 | int snd_soc_dapm_force_enable_pin_unlocked(struct snd_soc_dapm_context *dapm, |
3541 | const char *pin) | |
da34183e | 3542 | { |
91a5fca4 | 3543 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); |
da34183e | 3544 | |
91a5fca4 | 3545 | if (!w) { |
30a6a1a4 | 3546 | dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin); |
91a5fca4 | 3547 | return -EINVAL; |
0d86733c MB |
3548 | } |
3549 | ||
30a6a1a4 | 3550 | dev_dbg(w->dapm->dev, "ASoC: force enable pin %s\n", pin); |
91a5fca4 LPC |
3551 | w->connected = 1; |
3552 | w->force = 1; | |
75c1f891 | 3553 | dapm_mark_dirty(w, "force enable"); |
da34183e | 3554 | |
91a5fca4 | 3555 | return 0; |
da34183e | 3556 | } |
11391100 CK |
3557 | EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin_unlocked); |
3558 | ||
3559 | /** | |
3560 | * snd_soc_dapm_force_enable_pin - force a pin to be enabled | |
3561 | * @dapm: DAPM context | |
3562 | * @pin: pin name | |
3563 | * | |
3564 | * Enables input/output pin regardless of any other state. This is | |
3565 | * intended for use with microphone bias supplies used in microphone | |
3566 | * jack detection. | |
3567 | * | |
3568 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
3569 | * do any widget power switching. | |
3570 | */ | |
3571 | int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm, | |
3572 | const char *pin) | |
3573 | { | |
3574 | int ret; | |
3575 | ||
3576 | mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); | |
3577 | ||
3578 | ret = snd_soc_dapm_force_enable_pin_unlocked(dapm, pin); | |
3579 | ||
3580 | mutex_unlock(&dapm->card->dapm_mutex); | |
3581 | ||
3582 | return ret; | |
3583 | } | |
da34183e MB |
3584 | EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin); |
3585 | ||
11391100 CK |
3586 | /** |
3587 | * snd_soc_dapm_disable_pin_unlocked - disable pin. | |
3588 | * @dapm: DAPM context | |
3589 | * @pin: pin name | |
3590 | * | |
3591 | * Disables input/output pin and its parents or children widgets. | |
3592 | * | |
3593 | * Requires external locking. | |
3594 | * | |
3595 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
3596 | * do any widget power switching. | |
3597 | */ | |
3598 | int snd_soc_dapm_disable_pin_unlocked(struct snd_soc_dapm_context *dapm, | |
3599 | const char *pin) | |
3600 | { | |
3601 | return snd_soc_dapm_set_pin(dapm, pin, 0); | |
3602 | } | |
3603 | EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin_unlocked); | |
3604 | ||
a5302181 LG |
3605 | /** |
3606 | * snd_soc_dapm_disable_pin - disable pin. | |
ce6120cc | 3607 | * @dapm: DAPM context |
a5302181 LG |
3608 | * @pin: pin name |
3609 | * | |
74b8f955 | 3610 | * Disables input/output pin and its parents or children widgets. |
11391100 | 3611 | * |
a5302181 LG |
3612 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to |
3613 | * do any widget power switching. | |
3614 | */ | |
ce6120cc LG |
3615 | int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm, |
3616 | const char *pin) | |
a5302181 | 3617 | { |
11391100 CK |
3618 | int ret; |
3619 | ||
3620 | mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); | |
3621 | ||
3622 | ret = snd_soc_dapm_set_pin(dapm, pin, 0); | |
3623 | ||
3624 | mutex_unlock(&dapm->card->dapm_mutex); | |
3625 | ||
3626 | return ret; | |
2b97eabc | 3627 | } |
a5302181 | 3628 | EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin); |
2b97eabc | 3629 | |
11391100 CK |
3630 | /** |
3631 | * snd_soc_dapm_nc_pin_unlocked - permanently disable pin. | |
3632 | * @dapm: DAPM context | |
3633 | * @pin: pin name | |
3634 | * | |
3635 | * Marks the specified pin as being not connected, disabling it along | |
3636 | * any parent or child widgets. At present this is identical to | |
3637 | * snd_soc_dapm_disable_pin() but in future it will be extended to do | |
3638 | * additional things such as disabling controls which only affect | |
3639 | * paths through the pin. | |
3640 | * | |
3641 | * Requires external locking. | |
3642 | * | |
3643 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
3644 | * do any widget power switching. | |
3645 | */ | |
3646 | int snd_soc_dapm_nc_pin_unlocked(struct snd_soc_dapm_context *dapm, | |
3647 | const char *pin) | |
3648 | { | |
3649 | return snd_soc_dapm_set_pin(dapm, pin, 0); | |
3650 | } | |
3651 | EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin_unlocked); | |
3652 | ||
5817b52a MB |
3653 | /** |
3654 | * snd_soc_dapm_nc_pin - permanently disable pin. | |
ce6120cc | 3655 | * @dapm: DAPM context |
5817b52a MB |
3656 | * @pin: pin name |
3657 | * | |
3658 | * Marks the specified pin as being not connected, disabling it along | |
3659 | * any parent or child widgets. At present this is identical to | |
3660 | * snd_soc_dapm_disable_pin() but in future it will be extended to do | |
3661 | * additional things such as disabling controls which only affect | |
3662 | * paths through the pin. | |
3663 | * | |
3664 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
3665 | * do any widget power switching. | |
3666 | */ | |
ce6120cc | 3667 | int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin) |
5817b52a | 3668 | { |
11391100 CK |
3669 | int ret; |
3670 | ||
3671 | mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); | |
3672 | ||
3673 | ret = snd_soc_dapm_set_pin(dapm, pin, 0); | |
3674 | ||
3675 | mutex_unlock(&dapm->card->dapm_mutex); | |
3676 | ||
3677 | return ret; | |
5817b52a MB |
3678 | } |
3679 | EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin); | |
3680 | ||
eeec12bf | 3681 | /** |
a5302181 | 3682 | * snd_soc_dapm_get_pin_status - get audio pin status |
ce6120cc | 3683 | * @dapm: DAPM context |
a5302181 | 3684 | * @pin: audio signal pin endpoint (or start point) |
eeec12bf | 3685 | * |
a5302181 | 3686 | * Get audio pin status - connected or disconnected. |
eeec12bf | 3687 | * |
a5302181 | 3688 | * Returns 1 for connected otherwise 0. |
eeec12bf | 3689 | */ |
ce6120cc LG |
3690 | int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm, |
3691 | const char *pin) | |
eeec12bf | 3692 | { |
91a5fca4 | 3693 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); |
eeec12bf | 3694 | |
91a5fca4 LPC |
3695 | if (w) |
3696 | return w->connected; | |
a68b38ad | 3697 | |
eeec12bf GG |
3698 | return 0; |
3699 | } | |
a5302181 | 3700 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status); |
eeec12bf | 3701 | |
1547aba9 MB |
3702 | /** |
3703 | * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint | |
ce6120cc | 3704 | * @dapm: DAPM context |
1547aba9 MB |
3705 | * @pin: audio signal pin endpoint (or start point) |
3706 | * | |
3707 | * Mark the given endpoint or pin as ignoring suspend. When the | |
3708 | * system is disabled a path between two endpoints flagged as ignoring | |
3709 | * suspend will not be disabled. The path must already be enabled via | |
3710 | * normal means at suspend time, it will not be turned on if it was not | |
3711 | * already enabled. | |
3712 | */ | |
ce6120cc LG |
3713 | int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm, |
3714 | const char *pin) | |
1547aba9 | 3715 | { |
91a5fca4 | 3716 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, false); |
1547aba9 | 3717 | |
91a5fca4 | 3718 | if (!w) { |
30a6a1a4 | 3719 | dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin); |
91a5fca4 | 3720 | return -EINVAL; |
1547aba9 MB |
3721 | } |
3722 | ||
91a5fca4 LPC |
3723 | w->ignore_suspend = 1; |
3724 | ||
3725 | return 0; | |
1547aba9 MB |
3726 | } |
3727 | EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend); | |
3728 | ||
1633281b SW |
3729 | static bool snd_soc_dapm_widget_in_card_paths(struct snd_soc_card *card, |
3730 | struct snd_soc_dapm_widget *w) | |
3731 | { | |
3732 | struct snd_soc_dapm_path *p; | |
3733 | ||
3734 | list_for_each_entry(p, &card->paths, list) { | |
3735 | if ((p->source == w) || (p->sink == w)) { | |
3736 | dev_dbg(card->dev, | |
3737 | "... Path %s(id:%d dapm:%p) - %s(id:%d dapm:%p)\n", | |
3738 | p->source->name, p->source->id, p->source->dapm, | |
3739 | p->sink->name, p->sink->id, p->sink->dapm); | |
3740 | ||
3741 | /* Connected to something other than the codec */ | |
3742 | if (p->source->dapm != p->sink->dapm) | |
3743 | return true; | |
3744 | /* | |
3745 | * Loopback connection from codec external pin to | |
3746 | * codec external pin | |
3747 | */ | |
3748 | if (p->sink->id == snd_soc_dapm_input) { | |
3749 | switch (p->source->id) { | |
3750 | case snd_soc_dapm_output: | |
3751 | case snd_soc_dapm_micbias: | |
3752 | return true; | |
3753 | default: | |
3754 | break; | |
3755 | } | |
3756 | } | |
3757 | } | |
3758 | } | |
3759 | ||
3760 | return false; | |
3761 | } | |
3762 | ||
3763 | /** | |
7df37884 LPC |
3764 | * snd_soc_dapm_auto_nc_pins - call snd_soc_dapm_nc_pin for unused pins |
3765 | * @card: The card whose pins should be processed | |
1633281b | 3766 | * |
7df37884 LPC |
3767 | * Automatically call snd_soc_dapm_nc_pin() for any external pins in the card |
3768 | * which are unused. Pins are used if they are connected externally to a | |
3769 | * component, whether that be to some other device, or a loop-back connection to | |
3770 | * the component itself. | |
1633281b | 3771 | */ |
7df37884 | 3772 | void snd_soc_dapm_auto_nc_pins(struct snd_soc_card *card) |
1633281b | 3773 | { |
1633281b SW |
3774 | struct snd_soc_dapm_widget *w; |
3775 | ||
7df37884 | 3776 | dev_dbg(card->dev, "ASoC: Auto NC: DAPMs: card:%p\n", &card->dapm); |
1633281b SW |
3777 | |
3778 | list_for_each_entry(w, &card->widgets, list) { | |
1633281b SW |
3779 | switch (w->id) { |
3780 | case snd_soc_dapm_input: | |
3781 | case snd_soc_dapm_output: | |
3782 | case snd_soc_dapm_micbias: | |
7df37884 | 3783 | dev_dbg(card->dev, "ASoC: Auto NC: Checking widget %s\n", |
1633281b SW |
3784 | w->name); |
3785 | if (!snd_soc_dapm_widget_in_card_paths(card, w)) { | |
7df37884 | 3786 | dev_dbg(card->dev, |
1633281b | 3787 | "... Not in map; disabling\n"); |
7df37884 | 3788 | snd_soc_dapm_nc_pin(w->dapm, w->name); |
1633281b SW |
3789 | } |
3790 | break; | |
3791 | default: | |
3792 | break; | |
3793 | } | |
3794 | } | |
3795 | } | |
3796 | ||
2b97eabc RP |
3797 | /** |
3798 | * snd_soc_dapm_free - free dapm resources | |
728a5222 | 3799 | * @dapm: DAPM context |
2b97eabc RP |
3800 | * |
3801 | * Free all dapm widgets and resources. | |
3802 | */ | |
ce6120cc | 3803 | void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm) |
2b97eabc | 3804 | { |
ce6120cc | 3805 | snd_soc_dapm_sys_remove(dapm->dev); |
6c45e126 | 3806 | dapm_debugfs_cleanup(dapm); |
ce6120cc | 3807 | dapm_free_widgets(dapm); |
7be31be8 | 3808 | list_del(&dapm->list); |
2b97eabc RP |
3809 | } |
3810 | EXPORT_SYMBOL_GPL(snd_soc_dapm_free); | |
3811 | ||
57996358 | 3812 | static void soc_dapm_shutdown_dapm(struct snd_soc_dapm_context *dapm) |
51737470 | 3813 | { |
01005a72 | 3814 | struct snd_soc_card *card = dapm->card; |
51737470 MB |
3815 | struct snd_soc_dapm_widget *w; |
3816 | LIST_HEAD(down_list); | |
3817 | int powerdown = 0; | |
3818 | ||
01005a72 LG |
3819 | mutex_lock(&card->dapm_mutex); |
3820 | ||
97c866de JN |
3821 | list_for_each_entry(w, &dapm->card->widgets, list) { |
3822 | if (w->dapm != dapm) | |
3823 | continue; | |
51737470 | 3824 | if (w->power) { |
828a842f | 3825 | dapm_seq_insert(w, &down_list, false); |
c2caa4da | 3826 | w->power = 0; |
51737470 MB |
3827 | powerdown = 1; |
3828 | } | |
3829 | } | |
3830 | ||
3831 | /* If there were no widgets to power down we're already in | |
3832 | * standby. | |
3833 | */ | |
3834 | if (powerdown) { | |
7679e42e MB |
3835 | if (dapm->bias_level == SND_SOC_BIAS_ON) |
3836 | snd_soc_dapm_set_bias_level(dapm, | |
3837 | SND_SOC_BIAS_PREPARE); | |
95dd5cd6 | 3838 | dapm_seq_run(card, &down_list, 0, false); |
7679e42e MB |
3839 | if (dapm->bias_level == SND_SOC_BIAS_PREPARE) |
3840 | snd_soc_dapm_set_bias_level(dapm, | |
3841 | SND_SOC_BIAS_STANDBY); | |
51737470 | 3842 | } |
01005a72 LG |
3843 | |
3844 | mutex_unlock(&card->dapm_mutex); | |
f0fba2ad LG |
3845 | } |
3846 | ||
3847 | /* | |
3848 | * snd_soc_dapm_shutdown - callback for system shutdown | |
3849 | */ | |
3850 | void snd_soc_dapm_shutdown(struct snd_soc_card *card) | |
3851 | { | |
57996358 | 3852 | struct snd_soc_dapm_context *dapm; |
f0fba2ad | 3853 | |
57996358 | 3854 | list_for_each_entry(dapm, &card->dapm_list, list) { |
17282ba4 XX |
3855 | if (dapm != &card->dapm) { |
3856 | soc_dapm_shutdown_dapm(dapm); | |
3857 | if (dapm->bias_level == SND_SOC_BIAS_STANDBY) | |
3858 | snd_soc_dapm_set_bias_level(dapm, | |
3859 | SND_SOC_BIAS_OFF); | |
3860 | } | |
ce6120cc | 3861 | } |
17282ba4 XX |
3862 | |
3863 | soc_dapm_shutdown_dapm(&card->dapm); | |
3864 | if (card->dapm.bias_level == SND_SOC_BIAS_STANDBY) | |
3865 | snd_soc_dapm_set_bias_level(&card->dapm, | |
3866 | SND_SOC_BIAS_OFF); | |
51737470 MB |
3867 | } |
3868 | ||
2b97eabc | 3869 | /* Module information */ |
d331124d | 3870 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
2b97eabc RP |
3871 | MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC"); |
3872 | MODULE_LICENSE("GPL"); |