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Commit | Line | Data |
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2b97eabc RP |
1 | /* |
2 | * soc-dapm.c -- ALSA SoC Dynamic Audio Power Management | |
3 | * | |
4 | * Copyright 2005 Wolfson Microelectronics PLC. | |
d331124d | 5 | * Author: Liam Girdwood <lrg@slimlogic.co.uk> |
2b97eabc RP |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2 of the License, or (at your | |
10 | * option) any later version. | |
11 | * | |
2b97eabc RP |
12 | * Features: |
13 | * o Changes power status of internal codec blocks depending on the | |
14 | * dynamic configuration of codec internal audio paths and active | |
74b8f955 | 15 | * DACs/ADCs. |
2b97eabc | 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 | ||
2b97eabc RP |
50 | /* dapm power sequences - make this per codec in the future */ |
51 | static int dapm_up_seq[] = { | |
38357ab2 MB |
52 | [snd_soc_dapm_pre] = 0, |
53 | [snd_soc_dapm_supply] = 1, | |
62ea874a | 54 | [snd_soc_dapm_regulator_supply] = 1, |
d7e7eb91 | 55 | [snd_soc_dapm_clock_supply] = 1, |
38357ab2 | 56 | [snd_soc_dapm_micbias] = 2, |
c74184ed | 57 | [snd_soc_dapm_dai_link] = 2, |
888df395 | 58 | [snd_soc_dapm_dai] = 3, |
010ff262 MB |
59 | [snd_soc_dapm_aif_in] = 3, |
60 | [snd_soc_dapm_aif_out] = 3, | |
61 | [snd_soc_dapm_mic] = 4, | |
62 | [snd_soc_dapm_mux] = 5, | |
24ff33ac | 63 | [snd_soc_dapm_virt_mux] = 5, |
010ff262 MB |
64 | [snd_soc_dapm_value_mux] = 5, |
65 | [snd_soc_dapm_dac] = 6, | |
66 | [snd_soc_dapm_mixer] = 7, | |
67 | [snd_soc_dapm_mixer_named_ctl] = 7, | |
68 | [snd_soc_dapm_pga] = 8, | |
69 | [snd_soc_dapm_adc] = 9, | |
d88429a6 | 70 | [snd_soc_dapm_out_drv] = 10, |
010ff262 MB |
71 | [snd_soc_dapm_hp] = 10, |
72 | [snd_soc_dapm_spk] = 10, | |
7e1f7c8a | 73 | [snd_soc_dapm_line] = 10, |
010ff262 | 74 | [snd_soc_dapm_post] = 11, |
2b97eabc | 75 | }; |
ca9c1aae | 76 | |
2b97eabc | 77 | static int dapm_down_seq[] = { |
38357ab2 MB |
78 | [snd_soc_dapm_pre] = 0, |
79 | [snd_soc_dapm_adc] = 1, | |
80 | [snd_soc_dapm_hp] = 2, | |
1ca04065 | 81 | [snd_soc_dapm_spk] = 2, |
7e1f7c8a | 82 | [snd_soc_dapm_line] = 2, |
d88429a6 | 83 | [snd_soc_dapm_out_drv] = 2, |
38357ab2 MB |
84 | [snd_soc_dapm_pga] = 4, |
85 | [snd_soc_dapm_mixer_named_ctl] = 5, | |
e3d4dabd MB |
86 | [snd_soc_dapm_mixer] = 5, |
87 | [snd_soc_dapm_dac] = 6, | |
88 | [snd_soc_dapm_mic] = 7, | |
89 | [snd_soc_dapm_micbias] = 8, | |
90 | [snd_soc_dapm_mux] = 9, | |
24ff33ac | 91 | [snd_soc_dapm_virt_mux] = 9, |
e3d4dabd | 92 | [snd_soc_dapm_value_mux] = 9, |
010ff262 MB |
93 | [snd_soc_dapm_aif_in] = 10, |
94 | [snd_soc_dapm_aif_out] = 10, | |
888df395 | 95 | [snd_soc_dapm_dai] = 10, |
c74184ed | 96 | [snd_soc_dapm_dai_link] = 11, |
d7e7eb91 | 97 | [snd_soc_dapm_clock_supply] = 12, |
c74184ed MB |
98 | [snd_soc_dapm_regulator_supply] = 12, |
99 | [snd_soc_dapm_supply] = 12, | |
100 | [snd_soc_dapm_post] = 13, | |
2b97eabc RP |
101 | }; |
102 | ||
12ef193d | 103 | static void pop_wait(u32 pop_time) |
15e4c72f MB |
104 | { |
105 | if (pop_time) | |
106 | schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time)); | |
107 | } | |
108 | ||
fd8d3bc0 | 109 | static void pop_dbg(struct device *dev, u32 pop_time, const char *fmt, ...) |
15e4c72f MB |
110 | { |
111 | va_list args; | |
fd8d3bc0 | 112 | char *buf; |
15e4c72f | 113 | |
fd8d3bc0 JN |
114 | if (!pop_time) |
115 | return; | |
15e4c72f | 116 | |
fd8d3bc0 JN |
117 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); |
118 | if (buf == NULL) | |
119 | return; | |
15e4c72f | 120 | |
fd8d3bc0 JN |
121 | va_start(args, fmt); |
122 | vsnprintf(buf, PAGE_SIZE, fmt, args); | |
9d01df06 | 123 | dev_info(dev, "%s", buf); |
15e4c72f | 124 | va_end(args); |
fd8d3bc0 JN |
125 | |
126 | kfree(buf); | |
15e4c72f MB |
127 | } |
128 | ||
db432b41 MB |
129 | static bool dapm_dirty_widget(struct snd_soc_dapm_widget *w) |
130 | { | |
131 | return !list_empty(&w->dirty); | |
132 | } | |
133 | ||
25c77c5f | 134 | void dapm_mark_dirty(struct snd_soc_dapm_widget *w, const char *reason) |
db432b41 | 135 | { |
75c1f891 MB |
136 | if (!dapm_dirty_widget(w)) { |
137 | dev_vdbg(w->dapm->dev, "Marking %s dirty due to %s\n", | |
138 | w->name, reason); | |
db432b41 | 139 | list_add_tail(&w->dirty, &w->dapm->card->dapm_dirty); |
75c1f891 | 140 | } |
db432b41 | 141 | } |
25c77c5f | 142 | EXPORT_SYMBOL_GPL(dapm_mark_dirty); |
db432b41 | 143 | |
2b97eabc | 144 | /* create a new dapm widget */ |
88cb4290 | 145 | static inline struct snd_soc_dapm_widget *dapm_cnew_widget( |
2b97eabc RP |
146 | const struct snd_soc_dapm_widget *_widget) |
147 | { | |
88cb4290 | 148 | return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL); |
2b97eabc RP |
149 | } |
150 | ||
4805608a LG |
151 | /* get snd_card from DAPM context */ |
152 | static inline struct snd_card *dapm_get_snd_card( | |
153 | struct snd_soc_dapm_context *dapm) | |
154 | { | |
155 | if (dapm->codec) | |
156 | return dapm->codec->card->snd_card; | |
157 | else if (dapm->platform) | |
158 | return dapm->platform->card->snd_card; | |
159 | else | |
160 | BUG(); | |
161 | ||
162 | /* unreachable */ | |
163 | return NULL; | |
164 | } | |
165 | ||
166 | /* get soc_card from DAPM context */ | |
167 | static inline struct snd_soc_card *dapm_get_soc_card( | |
168 | struct snd_soc_dapm_context *dapm) | |
169 | { | |
170 | if (dapm->codec) | |
171 | return dapm->codec->card; | |
172 | else if (dapm->platform) | |
173 | return dapm->platform->card; | |
174 | else | |
175 | BUG(); | |
176 | ||
177 | /* unreachable */ | |
178 | return NULL; | |
179 | } | |
180 | ||
6c120e19 LG |
181 | static void dapm_reset(struct snd_soc_card *card) |
182 | { | |
183 | struct snd_soc_dapm_widget *w; | |
184 | ||
185 | memset(&card->dapm_stats, 0, sizeof(card->dapm_stats)); | |
186 | ||
187 | list_for_each_entry(w, &card->widgets, list) { | |
188 | w->power_checked = false; | |
189 | w->inputs = -1; | |
190 | w->outputs = -1; | |
191 | } | |
192 | } | |
193 | ||
0445bdf4 LG |
194 | static int soc_widget_read(struct snd_soc_dapm_widget *w, int reg) |
195 | { | |
196 | if (w->codec) | |
197 | return snd_soc_read(w->codec, reg); | |
b7950641 LG |
198 | else if (w->platform) |
199 | return snd_soc_platform_read(w->platform, reg); | |
200 | ||
201 | dev_err(w->dapm->dev, "no valid widget read method\n"); | |
202 | return -1; | |
0445bdf4 LG |
203 | } |
204 | ||
205 | static int soc_widget_write(struct snd_soc_dapm_widget *w, int reg, int val) | |
206 | { | |
207 | if (w->codec) | |
208 | return snd_soc_write(w->codec, reg, val); | |
b7950641 LG |
209 | else if (w->platform) |
210 | return snd_soc_platform_write(w->platform, reg, val); | |
211 | ||
212 | dev_err(w->dapm->dev, "no valid widget write method\n"); | |
213 | return -1; | |
0445bdf4 LG |
214 | } |
215 | ||
49575fb5 LG |
216 | static inline void soc_widget_lock(struct snd_soc_dapm_widget *w) |
217 | { | |
e06ab3b8 | 218 | if (w->codec && !w->codec->using_regmap) |
49575fb5 LG |
219 | mutex_lock(&w->codec->mutex); |
220 | else if (w->platform) | |
221 | mutex_lock(&w->platform->mutex); | |
222 | } | |
223 | ||
224 | static inline void soc_widget_unlock(struct snd_soc_dapm_widget *w) | |
225 | { | |
e06ab3b8 | 226 | if (w->codec && !w->codec->using_regmap) |
49575fb5 LG |
227 | mutex_unlock(&w->codec->mutex); |
228 | else if (w->platform) | |
229 | mutex_unlock(&w->platform->mutex); | |
230 | } | |
231 | ||
232 | static int soc_widget_update_bits_locked(struct snd_soc_dapm_widget *w, | |
0445bdf4 LG |
233 | unsigned short reg, unsigned int mask, unsigned int value) |
234 | { | |
8a713da8 | 235 | bool change; |
0445bdf4 LG |
236 | unsigned int old, new; |
237 | int ret; | |
238 | ||
8a713da8 MB |
239 | if (w->codec && w->codec->using_regmap) { |
240 | ret = regmap_update_bits_check(w->codec->control_data, | |
241 | reg, mask, value, &change); | |
242 | if (ret != 0) | |
243 | return ret; | |
244 | } else { | |
49575fb5 | 245 | soc_widget_lock(w); |
8a713da8 | 246 | ret = soc_widget_read(w, reg); |
49575fb5 LG |
247 | if (ret < 0) { |
248 | soc_widget_unlock(w); | |
0445bdf4 | 249 | return ret; |
49575fb5 | 250 | } |
8a713da8 MB |
251 | |
252 | old = ret; | |
253 | new = (old & ~mask) | (value & mask); | |
254 | change = old != new; | |
255 | if (change) { | |
256 | ret = soc_widget_write(w, reg, new); | |
49575fb5 LG |
257 | if (ret < 0) { |
258 | soc_widget_unlock(w); | |
8a713da8 | 259 | return ret; |
49575fb5 | 260 | } |
8a713da8 | 261 | } |
49575fb5 | 262 | soc_widget_unlock(w); |
0445bdf4 LG |
263 | } |
264 | ||
265 | return change; | |
266 | } | |
267 | ||
452c5eaa MB |
268 | /** |
269 | * snd_soc_dapm_set_bias_level - set the bias level for the system | |
ed5a4c47 | 270 | * @dapm: DAPM context |
452c5eaa MB |
271 | * @level: level to configure |
272 | * | |
273 | * Configure the bias (power) levels for the SoC audio device. | |
274 | * | |
275 | * Returns 0 for success else error. | |
276 | */ | |
ed5a4c47 | 277 | static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm, |
ce6120cc | 278 | enum snd_soc_bias_level level) |
452c5eaa | 279 | { |
ed5a4c47 | 280 | struct snd_soc_card *card = dapm->card; |
452c5eaa MB |
281 | int ret = 0; |
282 | ||
84e90930 MB |
283 | trace_snd_soc_bias_level_start(card, level); |
284 | ||
f0fba2ad | 285 | if (card && card->set_bias_level) |
d4c6005f | 286 | ret = card->set_bias_level(card, dapm, level); |
171ec6b0 MB |
287 | if (ret != 0) |
288 | goto out; | |
289 | ||
cc4c670a MB |
290 | if (dapm->codec) { |
291 | if (dapm->codec->driver->set_bias_level) | |
292 | ret = dapm->codec->driver->set_bias_level(dapm->codec, | |
293 | level); | |
294 | else | |
295 | dapm->bias_level = level; | |
296 | } | |
171ec6b0 MB |
297 | if (ret != 0) |
298 | goto out; | |
299 | ||
300 | if (card && card->set_bias_level_post) | |
d4c6005f | 301 | ret = card->set_bias_level_post(card, dapm, level); |
171ec6b0 | 302 | out: |
84e90930 MB |
303 | trace_snd_soc_bias_level_done(card, level); |
304 | ||
452c5eaa MB |
305 | return ret; |
306 | } | |
307 | ||
2b97eabc RP |
308 | /* set up initial codec paths */ |
309 | static void dapm_set_path_status(struct snd_soc_dapm_widget *w, | |
310 | struct snd_soc_dapm_path *p, int i) | |
311 | { | |
312 | switch (w->id) { | |
313 | case snd_soc_dapm_switch: | |
ca9c1aae IM |
314 | case snd_soc_dapm_mixer: |
315 | case snd_soc_dapm_mixer_named_ctl: { | |
2b97eabc | 316 | int val; |
4eaa9819 | 317 | struct soc_mixer_control *mc = (struct soc_mixer_control *) |
82cfecdc | 318 | w->kcontrol_news[i].private_value; |
815ecf8d JS |
319 | unsigned int reg = mc->reg; |
320 | unsigned int shift = mc->shift; | |
4eaa9819 | 321 | int max = mc->max; |
815ecf8d JS |
322 | unsigned int mask = (1 << fls(max)) - 1; |
323 | unsigned int invert = mc->invert; | |
2b97eabc | 324 | |
0445bdf4 | 325 | val = soc_widget_read(w, reg); |
2b97eabc RP |
326 | val = (val >> shift) & mask; |
327 | ||
328 | if ((invert && !val) || (!invert && val)) | |
329 | p->connect = 1; | |
330 | else | |
331 | p->connect = 0; | |
332 | } | |
333 | break; | |
334 | case snd_soc_dapm_mux: { | |
82cfecdc SW |
335 | struct soc_enum *e = (struct soc_enum *) |
336 | w->kcontrol_news[i].private_value; | |
2b97eabc RP |
337 | int val, item, bitmask; |
338 | ||
f8ba0b7b | 339 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
88d96086 | 340 | ; |
0445bdf4 | 341 | val = soc_widget_read(w, e->reg); |
2b97eabc RP |
342 | item = (val >> e->shift_l) & (bitmask - 1); |
343 | ||
344 | p->connect = 0; | |
f8ba0b7b | 345 | for (i = 0; i < e->max; i++) { |
2b97eabc RP |
346 | if (!(strcmp(p->name, e->texts[i])) && item == i) |
347 | p->connect = 1; | |
348 | } | |
349 | } | |
350 | break; | |
24ff33ac | 351 | case snd_soc_dapm_virt_mux: { |
82cfecdc SW |
352 | struct soc_enum *e = (struct soc_enum *) |
353 | w->kcontrol_news[i].private_value; | |
24ff33ac DP |
354 | |
355 | p->connect = 0; | |
356 | /* since a virtual mux has no backing registers to | |
357 | * decide which path to connect, it will try to match | |
358 | * with the first enumeration. This is to ensure | |
359 | * that the default mux choice (the first) will be | |
360 | * correctly powered up during initialization. | |
361 | */ | |
362 | if (!strcmp(p->name, e->texts[0])) | |
363 | p->connect = 1; | |
364 | } | |
365 | break; | |
2e72f8e3 | 366 | case snd_soc_dapm_value_mux: { |
74155556 | 367 | struct soc_enum *e = (struct soc_enum *) |
82cfecdc | 368 | w->kcontrol_news[i].private_value; |
2e72f8e3 PU |
369 | int val, item; |
370 | ||
0445bdf4 | 371 | val = soc_widget_read(w, e->reg); |
2e72f8e3 PU |
372 | val = (val >> e->shift_l) & e->mask; |
373 | for (item = 0; item < e->max; item++) { | |
374 | if (val == e->values[item]) | |
375 | break; | |
376 | } | |
377 | ||
378 | p->connect = 0; | |
379 | for (i = 0; i < e->max; i++) { | |
380 | if (!(strcmp(p->name, e->texts[i])) && item == i) | |
381 | p->connect = 1; | |
382 | } | |
383 | } | |
384 | break; | |
56563100 | 385 | /* does not affect routing - always connected */ |
2b97eabc | 386 | case snd_soc_dapm_pga: |
d88429a6 | 387 | case snd_soc_dapm_out_drv: |
2b97eabc RP |
388 | case snd_soc_dapm_output: |
389 | case snd_soc_dapm_adc: | |
390 | case snd_soc_dapm_input: | |
1ab97c8c | 391 | case snd_soc_dapm_siggen: |
2b97eabc RP |
392 | case snd_soc_dapm_dac: |
393 | case snd_soc_dapm_micbias: | |
394 | case snd_soc_dapm_vmid: | |
246d0a17 | 395 | case snd_soc_dapm_supply: |
62ea874a | 396 | case snd_soc_dapm_regulator_supply: |
d7e7eb91 | 397 | case snd_soc_dapm_clock_supply: |
010ff262 MB |
398 | case snd_soc_dapm_aif_in: |
399 | case snd_soc_dapm_aif_out: | |
888df395 | 400 | case snd_soc_dapm_dai: |
2b97eabc RP |
401 | case snd_soc_dapm_hp: |
402 | case snd_soc_dapm_mic: | |
403 | case snd_soc_dapm_spk: | |
404 | case snd_soc_dapm_line: | |
c74184ed | 405 | case snd_soc_dapm_dai_link: |
56563100 MB |
406 | p->connect = 1; |
407 | break; | |
408 | /* does affect routing - dynamically connected */ | |
2b97eabc RP |
409 | case snd_soc_dapm_pre: |
410 | case snd_soc_dapm_post: | |
411 | p->connect = 0; | |
412 | break; | |
413 | } | |
414 | } | |
415 | ||
74b8f955 | 416 | /* connect mux widget to its interconnecting audio paths */ |
ce6120cc | 417 | static int dapm_connect_mux(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
418 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, |
419 | struct snd_soc_dapm_path *path, const char *control_name, | |
420 | const struct snd_kcontrol_new *kcontrol) | |
421 | { | |
422 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
423 | int i; | |
424 | ||
f8ba0b7b | 425 | for (i = 0; i < e->max; i++) { |
2b97eabc | 426 | if (!(strcmp(control_name, e->texts[i]))) { |
8ddab3f5 | 427 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
428 | list_add(&path->list_sink, &dest->sources); |
429 | list_add(&path->list_source, &src->sinks); | |
430 | path->name = (char*)e->texts[i]; | |
431 | dapm_set_path_status(dest, path, 0); | |
432 | return 0; | |
433 | } | |
434 | } | |
435 | ||
436 | return -ENODEV; | |
437 | } | |
438 | ||
74b8f955 | 439 | /* connect mixer widget to its interconnecting audio paths */ |
ce6120cc | 440 | static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
441 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, |
442 | struct snd_soc_dapm_path *path, const char *control_name) | |
443 | { | |
444 | int i; | |
445 | ||
446 | /* search for mixer kcontrol */ | |
447 | for (i = 0; i < dest->num_kcontrols; i++) { | |
82cfecdc | 448 | if (!strcmp(control_name, dest->kcontrol_news[i].name)) { |
8ddab3f5 | 449 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
450 | list_add(&path->list_sink, &dest->sources); |
451 | list_add(&path->list_source, &src->sinks); | |
82cfecdc | 452 | path->name = dest->kcontrol_news[i].name; |
2b97eabc RP |
453 | dapm_set_path_status(dest, path, i); |
454 | return 0; | |
455 | } | |
456 | } | |
457 | return -ENODEV; | |
458 | } | |
459 | ||
af46800b | 460 | static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context *dapm, |
1007da06 | 461 | struct snd_soc_dapm_widget *kcontrolw, |
af46800b SW |
462 | const struct snd_kcontrol_new *kcontrol_new, |
463 | struct snd_kcontrol **kcontrol) | |
464 | { | |
465 | struct snd_soc_dapm_widget *w; | |
466 | int i; | |
467 | ||
468 | *kcontrol = NULL; | |
469 | ||
470 | list_for_each_entry(w, &dapm->card->widgets, list) { | |
1007da06 SW |
471 | if (w == kcontrolw || w->dapm != kcontrolw->dapm) |
472 | continue; | |
af46800b SW |
473 | for (i = 0; i < w->num_kcontrols; i++) { |
474 | if (&w->kcontrol_news[i] == kcontrol_new) { | |
475 | if (w->kcontrols) | |
476 | *kcontrol = w->kcontrols[i]; | |
477 | return 1; | |
478 | } | |
479 | } | |
480 | } | |
481 | ||
482 | return 0; | |
483 | } | |
484 | ||
2b97eabc | 485 | /* create new dapm mixer control */ |
4b80b8c2 | 486 | static int dapm_new_mixer(struct snd_soc_dapm_widget *w) |
2b97eabc | 487 | { |
4b80b8c2 | 488 | struct snd_soc_dapm_context *dapm = w->dapm; |
2b97eabc | 489 | int i, ret = 0; |
3e5ff4df | 490 | size_t name_len, prefix_len; |
2b97eabc | 491 | struct snd_soc_dapm_path *path; |
12ea2c78 | 492 | struct snd_card *card = dapm->card->snd_card; |
efb7ac3f | 493 | const char *prefix; |
fafd2176 SW |
494 | struct snd_soc_dapm_widget_list *wlist; |
495 | size_t wlistsize; | |
efb7ac3f MB |
496 | |
497 | if (dapm->codec) | |
498 | prefix = dapm->codec->name_prefix; | |
499 | else | |
500 | prefix = NULL; | |
2b97eabc | 501 | |
3e5ff4df MB |
502 | if (prefix) |
503 | prefix_len = strlen(prefix) + 1; | |
504 | else | |
505 | prefix_len = 0; | |
506 | ||
2b97eabc RP |
507 | /* add kcontrol */ |
508 | for (i = 0; i < w->num_kcontrols; i++) { | |
509 | ||
510 | /* match name */ | |
511 | list_for_each_entry(path, &w->sources, list_sink) { | |
512 | ||
513 | /* mixer/mux paths name must match control name */ | |
82cfecdc | 514 | if (path->name != (char *)w->kcontrol_news[i].name) |
2b97eabc RP |
515 | continue; |
516 | ||
82cd8764 LPC |
517 | if (w->kcontrols[i]) { |
518 | path->kcontrol = w->kcontrols[i]; | |
519 | continue; | |
520 | } | |
521 | ||
fafd2176 SW |
522 | wlistsize = sizeof(struct snd_soc_dapm_widget_list) + |
523 | sizeof(struct snd_soc_dapm_widget *), | |
524 | wlist = kzalloc(wlistsize, GFP_KERNEL); | |
525 | if (wlist == NULL) { | |
526 | dev_err(dapm->dev, | |
527 | "asoc: can't allocate widget list for %s\n", | |
528 | w->name); | |
529 | return -ENOMEM; | |
530 | } | |
531 | wlist->num_widgets = 1; | |
532 | wlist->widgets[0] = w; | |
533 | ||
ca9c1aae IM |
534 | /* add dapm control with long name. |
535 | * for dapm_mixer this is the concatenation of the | |
536 | * mixer and kcontrol name. | |
537 | * for dapm_mixer_named_ctl this is simply the | |
538 | * kcontrol name. | |
539 | */ | |
82cfecdc | 540 | name_len = strlen(w->kcontrol_news[i].name) + 1; |
07495f3e | 541 | if (w->id != snd_soc_dapm_mixer_named_ctl) |
ca9c1aae IM |
542 | name_len += 1 + strlen(w->name); |
543 | ||
219b93f5 | 544 | path->long_name = kmalloc(name_len, GFP_KERNEL); |
ca9c1aae | 545 | |
fafd2176 SW |
546 | if (path->long_name == NULL) { |
547 | kfree(wlist); | |
2b97eabc | 548 | return -ENOMEM; |
fafd2176 | 549 | } |
2b97eabc | 550 | |
ca9c1aae | 551 | switch (w->id) { |
ca9c1aae | 552 | default: |
3e5ff4df MB |
553 | /* The control will get a prefix from |
554 | * the control creation process but | |
555 | * we're also using the same prefix | |
556 | * for widgets so cut the prefix off | |
557 | * the front of the widget name. | |
558 | */ | |
888df395 MB |
559 | snprintf((char *)path->long_name, name_len, |
560 | "%s %s", w->name + prefix_len, | |
82cfecdc | 561 | w->kcontrol_news[i].name); |
07495f3e | 562 | break; |
ca9c1aae | 563 | case snd_soc_dapm_mixer_named_ctl: |
888df395 MB |
564 | snprintf((char *)path->long_name, name_len, |
565 | "%s", w->kcontrol_news[i].name); | |
07495f3e | 566 | break; |
ca9c1aae IM |
567 | } |
568 | ||
888df395 | 569 | ((char *)path->long_name)[name_len - 1] = '\0'; |
219b93f5 | 570 | |
fafd2176 SW |
571 | path->kcontrol = snd_soc_cnew(&w->kcontrol_news[i], |
572 | wlist, path->long_name, | |
573 | prefix); | |
ce6120cc | 574 | ret = snd_ctl_add(card, path->kcontrol); |
2b97eabc | 575 | if (ret < 0) { |
f7d41ae8 JN |
576 | dev_err(dapm->dev, |
577 | "asoc: failed to add dapm kcontrol %s: %d\n", | |
578 | path->long_name, ret); | |
fafd2176 | 579 | kfree(wlist); |
2b97eabc RP |
580 | kfree(path->long_name); |
581 | path->long_name = NULL; | |
582 | return ret; | |
583 | } | |
fad59888 | 584 | w->kcontrols[i] = path->kcontrol; |
2b97eabc RP |
585 | } |
586 | } | |
587 | return ret; | |
588 | } | |
589 | ||
590 | /* create new dapm mux control */ | |
4b80b8c2 | 591 | static int dapm_new_mux(struct snd_soc_dapm_widget *w) |
2b97eabc | 592 | { |
4b80b8c2 | 593 | struct snd_soc_dapm_context *dapm = w->dapm; |
2b97eabc RP |
594 | struct snd_soc_dapm_path *path = NULL; |
595 | struct snd_kcontrol *kcontrol; | |
12ea2c78 | 596 | struct snd_card *card = dapm->card->snd_card; |
efb7ac3f | 597 | const char *prefix; |
3e5ff4df | 598 | size_t prefix_len; |
af46800b | 599 | int ret; |
fafd2176 | 600 | struct snd_soc_dapm_widget_list *wlist; |
af46800b | 601 | int shared, wlistentries; |
fafd2176 | 602 | size_t wlistsize; |
888df395 | 603 | const char *name; |
2b97eabc | 604 | |
af46800b SW |
605 | if (w->num_kcontrols != 1) { |
606 | dev_err(dapm->dev, | |
607 | "asoc: mux %s has incorrect number of controls\n", | |
608 | w->name); | |
2b97eabc RP |
609 | return -EINVAL; |
610 | } | |
611 | ||
1007da06 | 612 | shared = dapm_is_shared_kcontrol(dapm, w, &w->kcontrol_news[0], |
af46800b SW |
613 | &kcontrol); |
614 | if (kcontrol) { | |
615 | wlist = kcontrol->private_data; | |
616 | wlistentries = wlist->num_widgets + 1; | |
617 | } else { | |
618 | wlist = NULL; | |
619 | wlistentries = 1; | |
620 | } | |
fafd2176 | 621 | wlistsize = sizeof(struct snd_soc_dapm_widget_list) + |
af46800b SW |
622 | wlistentries * sizeof(struct snd_soc_dapm_widget *), |
623 | wlist = krealloc(wlist, wlistsize, GFP_KERNEL); | |
fafd2176 SW |
624 | if (wlist == NULL) { |
625 | dev_err(dapm->dev, | |
626 | "asoc: can't allocate widget list for %s\n", w->name); | |
627 | return -ENOMEM; | |
628 | } | |
af46800b SW |
629 | wlist->num_widgets = wlistentries; |
630 | wlist->widgets[wlistentries - 1] = w; | |
efb7ac3f | 631 | |
af46800b SW |
632 | if (!kcontrol) { |
633 | if (dapm->codec) | |
634 | prefix = dapm->codec->name_prefix; | |
635 | else | |
636 | prefix = NULL; | |
637 | ||
638 | if (shared) { | |
639 | name = w->kcontrol_news[0].name; | |
640 | prefix_len = 0; | |
641 | } else { | |
642 | name = w->name; | |
643 | if (prefix) | |
644 | prefix_len = strlen(prefix) + 1; | |
645 | else | |
646 | prefix_len = 0; | |
647 | } | |
3e5ff4df | 648 | |
af46800b SW |
649 | /* |
650 | * The control will get a prefix from the control creation | |
651 | * process but we're also using the same prefix for widgets so | |
652 | * cut the prefix off the front of the widget name. | |
653 | */ | |
654 | kcontrol = snd_soc_cnew(&w->kcontrol_news[0], wlist, | |
655 | name + prefix_len, prefix); | |
656 | ret = snd_ctl_add(card, kcontrol); | |
657 | if (ret < 0) { | |
53daf208 MB |
658 | dev_err(dapm->dev, "failed to add kcontrol %s: %d\n", |
659 | w->name, ret); | |
af46800b SW |
660 | kfree(wlist); |
661 | return ret; | |
662 | } | |
663 | } | |
ce6120cc | 664 | |
af46800b | 665 | kcontrol->private_data = wlist; |
2b97eabc | 666 | |
fad59888 SW |
667 | w->kcontrols[0] = kcontrol; |
668 | ||
2b97eabc RP |
669 | list_for_each_entry(path, &w->sources, list_sink) |
670 | path->kcontrol = kcontrol; | |
671 | ||
af46800b | 672 | return 0; |
2b97eabc RP |
673 | } |
674 | ||
675 | /* create new dapm volume control */ | |
4b80b8c2 | 676 | static int dapm_new_pga(struct snd_soc_dapm_widget *w) |
2b97eabc | 677 | { |
a6c65736 | 678 | if (w->num_kcontrols) |
f7d41ae8 JN |
679 | dev_err(w->dapm->dev, |
680 | "asoc: PGA controls not supported: '%s'\n", w->name); | |
2b97eabc | 681 | |
a6c65736 | 682 | return 0; |
2b97eabc RP |
683 | } |
684 | ||
685 | /* reset 'walked' bit for each dapm path */ | |
ce6120cc | 686 | static inline void dapm_clear_walk(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
687 | { |
688 | struct snd_soc_dapm_path *p; | |
689 | ||
8ddab3f5 | 690 | list_for_each_entry(p, &dapm->card->paths, list) |
2b97eabc RP |
691 | p->walked = 0; |
692 | } | |
693 | ||
9949788b MB |
694 | /* We implement power down on suspend by checking the power state of |
695 | * the ALSA card - when we are suspending the ALSA state for the card | |
696 | * is set to D3. | |
697 | */ | |
698 | static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget) | |
699 | { | |
12ea2c78 | 700 | int level = snd_power_get_state(widget->dapm->card->snd_card); |
9949788b | 701 | |
f0fba2ad | 702 | switch (level) { |
9949788b MB |
703 | case SNDRV_CTL_POWER_D3hot: |
704 | case SNDRV_CTL_POWER_D3cold: | |
1547aba9 | 705 | if (widget->ignore_suspend) |
f7d41ae8 JN |
706 | dev_dbg(widget->dapm->dev, "%s ignoring suspend\n", |
707 | widget->name); | |
1547aba9 | 708 | return widget->ignore_suspend; |
9949788b MB |
709 | default: |
710 | return 1; | |
711 | } | |
712 | } | |
713 | ||
ec2e3031 LG |
714 | /* add widget to list if it's not already in the list */ |
715 | static int dapm_list_add_widget(struct snd_soc_dapm_widget_list **list, | |
716 | struct snd_soc_dapm_widget *w) | |
717 | { | |
718 | struct snd_soc_dapm_widget_list *wlist; | |
719 | int wlistsize, wlistentries, i; | |
720 | ||
721 | if (*list == NULL) | |
722 | return -EINVAL; | |
723 | ||
724 | wlist = *list; | |
725 | ||
726 | /* is this widget already in the list */ | |
727 | for (i = 0; i < wlist->num_widgets; i++) { | |
728 | if (wlist->widgets[i] == w) | |
729 | return 0; | |
730 | } | |
731 | ||
732 | /* allocate some new space */ | |
733 | wlistentries = wlist->num_widgets + 1; | |
734 | wlistsize = sizeof(struct snd_soc_dapm_widget_list) + | |
735 | wlistentries * sizeof(struct snd_soc_dapm_widget *); | |
736 | *list = krealloc(wlist, wlistsize, GFP_KERNEL); | |
737 | if (*list == NULL) { | |
738 | dev_err(w->dapm->dev, "can't allocate widget list for %s\n", | |
739 | w->name); | |
740 | return -ENOMEM; | |
741 | } | |
742 | wlist = *list; | |
743 | ||
744 | /* insert the widget */ | |
745 | dev_dbg(w->dapm->dev, "added %s in widget list pos %d\n", | |
746 | w->name, wlist->num_widgets); | |
747 | ||
748 | wlist->widgets[wlist->num_widgets] = w; | |
749 | wlist->num_widgets++; | |
750 | return 1; | |
751 | } | |
752 | ||
2b97eabc RP |
753 | /* |
754 | * Recursively check for a completed path to an active or physically connected | |
755 | * output widget. Returns number of complete paths. | |
756 | */ | |
ec2e3031 LG |
757 | static int is_connected_output_ep(struct snd_soc_dapm_widget *widget, |
758 | struct snd_soc_dapm_widget_list **list) | |
2b97eabc RP |
759 | { |
760 | struct snd_soc_dapm_path *path; | |
761 | int con = 0; | |
762 | ||
024dc078 MB |
763 | if (widget->outputs >= 0) |
764 | return widget->outputs; | |
765 | ||
de02d078 MB |
766 | DAPM_UPDATE_STAT(widget, path_checks); |
767 | ||
62ea874a MB |
768 | switch (widget->id) { |
769 | case snd_soc_dapm_supply: | |
770 | case snd_soc_dapm_regulator_supply: | |
d7e7eb91 | 771 | case snd_soc_dapm_clock_supply: |
246d0a17 | 772 | return 0; |
62ea874a MB |
773 | default: |
774 | break; | |
775 | } | |
246d0a17 | 776 | |
010ff262 MB |
777 | switch (widget->id) { |
778 | case snd_soc_dapm_adc: | |
779 | case snd_soc_dapm_aif_out: | |
888df395 | 780 | case snd_soc_dapm_dai: |
024dc078 MB |
781 | if (widget->active) { |
782 | widget->outputs = snd_soc_dapm_suspend_check(widget); | |
783 | return widget->outputs; | |
784 | } | |
010ff262 MB |
785 | default: |
786 | break; | |
787 | } | |
2b97eabc RP |
788 | |
789 | if (widget->connected) { | |
790 | /* connected pin ? */ | |
024dc078 MB |
791 | if (widget->id == snd_soc_dapm_output && !widget->ext) { |
792 | widget->outputs = snd_soc_dapm_suspend_check(widget); | |
793 | return widget->outputs; | |
794 | } | |
2b97eabc RP |
795 | |
796 | /* connected jack or spk ? */ | |
024dc078 MB |
797 | if (widget->id == snd_soc_dapm_hp || |
798 | widget->id == snd_soc_dapm_spk || | |
799 | (widget->id == snd_soc_dapm_line && | |
800 | !list_empty(&widget->sources))) { | |
801 | widget->outputs = snd_soc_dapm_suspend_check(widget); | |
802 | return widget->outputs; | |
803 | } | |
2b97eabc RP |
804 | } |
805 | ||
806 | list_for_each_entry(path, &widget->sinks, list_source) { | |
e56235e0 MB |
807 | DAPM_UPDATE_STAT(widget, neighbour_checks); |
808 | ||
bf3a9e13 MB |
809 | if (path->weak) |
810 | continue; | |
811 | ||
2b97eabc RP |
812 | if (path->walked) |
813 | continue; | |
814 | ||
ec2e3031 LG |
815 | trace_snd_soc_dapm_output_path(widget, path); |
816 | ||
2b97eabc RP |
817 | if (path->sink && path->connect) { |
818 | path->walked = 1; | |
ec2e3031 LG |
819 | |
820 | /* do we need to add this widget to the list ? */ | |
821 | if (list) { | |
822 | int err; | |
823 | err = dapm_list_add_widget(list, path->sink); | |
824 | if (err < 0) { | |
825 | dev_err(widget->dapm->dev, "could not add widget %s\n", | |
826 | widget->name); | |
827 | return con; | |
828 | } | |
829 | } | |
830 | ||
831 | con += is_connected_output_ep(path->sink, list); | |
2b97eabc RP |
832 | } |
833 | } | |
834 | ||
024dc078 MB |
835 | widget->outputs = con; |
836 | ||
2b97eabc RP |
837 | return con; |
838 | } | |
839 | ||
840 | /* | |
841 | * Recursively check for a completed path to an active or physically connected | |
842 | * input widget. Returns number of complete paths. | |
843 | */ | |
ec2e3031 LG |
844 | static int is_connected_input_ep(struct snd_soc_dapm_widget *widget, |
845 | struct snd_soc_dapm_widget_list **list) | |
2b97eabc RP |
846 | { |
847 | struct snd_soc_dapm_path *path; | |
848 | int con = 0; | |
849 | ||
024dc078 MB |
850 | if (widget->inputs >= 0) |
851 | return widget->inputs; | |
852 | ||
de02d078 MB |
853 | DAPM_UPDATE_STAT(widget, path_checks); |
854 | ||
62ea874a MB |
855 | switch (widget->id) { |
856 | case snd_soc_dapm_supply: | |
857 | case snd_soc_dapm_regulator_supply: | |
d7e7eb91 | 858 | case snd_soc_dapm_clock_supply: |
246d0a17 | 859 | return 0; |
62ea874a MB |
860 | default: |
861 | break; | |
862 | } | |
246d0a17 | 863 | |
2b97eabc | 864 | /* active stream ? */ |
010ff262 MB |
865 | switch (widget->id) { |
866 | case snd_soc_dapm_dac: | |
867 | case snd_soc_dapm_aif_in: | |
888df395 | 868 | case snd_soc_dapm_dai: |
024dc078 MB |
869 | if (widget->active) { |
870 | widget->inputs = snd_soc_dapm_suspend_check(widget); | |
871 | return widget->inputs; | |
872 | } | |
010ff262 MB |
873 | default: |
874 | break; | |
875 | } | |
2b97eabc RP |
876 | |
877 | if (widget->connected) { | |
878 | /* connected pin ? */ | |
024dc078 MB |
879 | if (widget->id == snd_soc_dapm_input && !widget->ext) { |
880 | widget->inputs = snd_soc_dapm_suspend_check(widget); | |
881 | return widget->inputs; | |
882 | } | |
2b97eabc RP |
883 | |
884 | /* connected VMID/Bias for lower pops */ | |
024dc078 MB |
885 | if (widget->id == snd_soc_dapm_vmid) { |
886 | widget->inputs = snd_soc_dapm_suspend_check(widget); | |
887 | return widget->inputs; | |
888 | } | |
2b97eabc RP |
889 | |
890 | /* connected jack ? */ | |
eaeae5d9 | 891 | if (widget->id == snd_soc_dapm_mic || |
024dc078 MB |
892 | (widget->id == snd_soc_dapm_line && |
893 | !list_empty(&widget->sinks))) { | |
894 | widget->inputs = snd_soc_dapm_suspend_check(widget); | |
895 | return widget->inputs; | |
896 | } | |
897 | ||
1ab97c8c MB |
898 | /* signal generator */ |
899 | if (widget->id == snd_soc_dapm_siggen) { | |
900 | widget->inputs = snd_soc_dapm_suspend_check(widget); | |
901 | return widget->inputs; | |
902 | } | |
2b97eabc RP |
903 | } |
904 | ||
905 | list_for_each_entry(path, &widget->sources, list_sink) { | |
e56235e0 MB |
906 | DAPM_UPDATE_STAT(widget, neighbour_checks); |
907 | ||
bf3a9e13 MB |
908 | if (path->weak) |
909 | continue; | |
910 | ||
2b97eabc RP |
911 | if (path->walked) |
912 | continue; | |
913 | ||
ec2e3031 LG |
914 | trace_snd_soc_dapm_input_path(widget, path); |
915 | ||
2b97eabc RP |
916 | if (path->source && path->connect) { |
917 | path->walked = 1; | |
ec2e3031 LG |
918 | |
919 | /* do we need to add this widget to the list ? */ | |
920 | if (list) { | |
921 | int err; | |
922 | err = dapm_list_add_widget(list, path->sink); | |
923 | if (err < 0) { | |
924 | dev_err(widget->dapm->dev, "could not add widget %s\n", | |
925 | widget->name); | |
926 | return con; | |
927 | } | |
928 | } | |
929 | ||
930 | con += is_connected_input_ep(path->source, list); | |
2b97eabc RP |
931 | } |
932 | } | |
933 | ||
024dc078 MB |
934 | widget->inputs = con; |
935 | ||
2b97eabc RP |
936 | return con; |
937 | } | |
938 | ||
ec2e3031 LG |
939 | /** |
940 | * snd_soc_dapm_get_connected_widgets - query audio path and it's widgets. | |
941 | * @dai: the soc DAI. | |
942 | * @stream: stream direction. | |
943 | * @list: list of active widgets for this stream. | |
944 | * | |
945 | * Queries DAPM graph as to whether an valid audio stream path exists for | |
946 | * the initial stream specified by name. This takes into account | |
947 | * current mixer and mux kcontrol settings. Creates list of valid widgets. | |
948 | * | |
949 | * Returns the number of valid paths or negative error. | |
950 | */ | |
951 | int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai *dai, int stream, | |
952 | struct snd_soc_dapm_widget_list **list) | |
953 | { | |
954 | struct snd_soc_card *card = dai->card; | |
955 | int paths; | |
956 | ||
957 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); | |
958 | dapm_reset(card); | |
959 | ||
960 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) | |
961 | paths = is_connected_output_ep(dai->playback_widget, list); | |
962 | else | |
963 | paths = is_connected_input_ep(dai->playback_widget, list); | |
964 | ||
965 | trace_snd_soc_dapm_connected(paths, stream); | |
966 | dapm_clear_walk(&card->dapm); | |
967 | mutex_unlock(&card->dapm_mutex); | |
968 | ||
969 | return paths; | |
970 | } | |
971 | ||
e2be2ccf JN |
972 | /* |
973 | * Handler for generic register modifier widget. | |
974 | */ | |
975 | int dapm_reg_event(struct snd_soc_dapm_widget *w, | |
976 | struct snd_kcontrol *kcontrol, int event) | |
977 | { | |
978 | unsigned int val; | |
979 | ||
980 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
981 | val = w->on_val; | |
982 | else | |
983 | val = w->off_val; | |
984 | ||
49575fb5 | 985 | soc_widget_update_bits_locked(w, -(w->reg + 1), |
e2be2ccf JN |
986 | w->mask << w->shift, val << w->shift); |
987 | ||
988 | return 0; | |
989 | } | |
11589418 | 990 | EXPORT_SYMBOL_GPL(dapm_reg_event); |
e2be2ccf | 991 | |
62ea874a MB |
992 | /* |
993 | * Handler for regulator supply widget. | |
994 | */ | |
995 | int dapm_regulator_event(struct snd_soc_dapm_widget *w, | |
996 | struct snd_kcontrol *kcontrol, int event) | |
997 | { | |
998 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
a3cc056b | 999 | return regulator_enable(w->regulator); |
62ea874a | 1000 | else |
a3cc056b | 1001 | return regulator_disable_deferred(w->regulator, w->shift); |
62ea874a MB |
1002 | } |
1003 | EXPORT_SYMBOL_GPL(dapm_regulator_event); | |
1004 | ||
d7e7eb91 OL |
1005 | /* |
1006 | * Handler for clock supply widget. | |
1007 | */ | |
1008 | int dapm_clock_event(struct snd_soc_dapm_widget *w, | |
1009 | struct snd_kcontrol *kcontrol, int event) | |
1010 | { | |
1011 | if (!w->clk) | |
1012 | return -EIO; | |
1013 | ||
1014 | if (SND_SOC_DAPM_EVENT_ON(event)) { | |
1015 | return clk_enable(w->clk); | |
1016 | } else { | |
1017 | clk_disable(w->clk); | |
1018 | return 0; | |
1019 | } | |
1020 | } | |
1021 | EXPORT_SYMBOL_GPL(dapm_clock_event); | |
1022 | ||
d805002b MB |
1023 | static int dapm_widget_power_check(struct snd_soc_dapm_widget *w) |
1024 | { | |
9b8a83b2 MB |
1025 | if (w->power_checked) |
1026 | return w->new_power; | |
1027 | ||
d805002b | 1028 | if (w->force) |
9b8a83b2 | 1029 | w->new_power = 1; |
d805002b | 1030 | else |
9b8a83b2 MB |
1031 | w->new_power = w->power_check(w); |
1032 | ||
1033 | w->power_checked = true; | |
1034 | ||
1035 | return w->new_power; | |
d805002b MB |
1036 | } |
1037 | ||
cd0f2d47 MB |
1038 | /* Generic check to see if a widget should be powered. |
1039 | */ | |
1040 | static int dapm_generic_check_power(struct snd_soc_dapm_widget *w) | |
1041 | { | |
1042 | int in, out; | |
1043 | ||
de02d078 MB |
1044 | DAPM_UPDATE_STAT(w, power_checks); |
1045 | ||
ec2e3031 | 1046 | in = is_connected_input_ep(w, NULL); |
ce6120cc | 1047 | dapm_clear_walk(w->dapm); |
ec2e3031 | 1048 | out = is_connected_output_ep(w, NULL); |
ce6120cc | 1049 | dapm_clear_walk(w->dapm); |
cd0f2d47 MB |
1050 | return out != 0 && in != 0; |
1051 | } | |
1052 | ||
888df395 MB |
1053 | static int dapm_dai_check_power(struct snd_soc_dapm_widget *w) |
1054 | { | |
1055 | DAPM_UPDATE_STAT(w, power_checks); | |
1056 | ||
1eee1b38 MB |
1057 | if (w->active) |
1058 | return w->active; | |
1059 | ||
1060 | return dapm_generic_check_power(w); | |
888df395 MB |
1061 | } |
1062 | ||
6ea31b9f MB |
1063 | /* Check to see if an ADC has power */ |
1064 | static int dapm_adc_check_power(struct snd_soc_dapm_widget *w) | |
1065 | { | |
1066 | int in; | |
1067 | ||
de02d078 MB |
1068 | DAPM_UPDATE_STAT(w, power_checks); |
1069 | ||
6ea31b9f | 1070 | if (w->active) { |
ec2e3031 | 1071 | in = is_connected_input_ep(w, NULL); |
ce6120cc | 1072 | dapm_clear_walk(w->dapm); |
6ea31b9f MB |
1073 | return in != 0; |
1074 | } else { | |
1075 | return dapm_generic_check_power(w); | |
1076 | } | |
1077 | } | |
1078 | ||
1079 | /* Check to see if a DAC has power */ | |
1080 | static int dapm_dac_check_power(struct snd_soc_dapm_widget *w) | |
1081 | { | |
1082 | int out; | |
1083 | ||
de02d078 MB |
1084 | DAPM_UPDATE_STAT(w, power_checks); |
1085 | ||
6ea31b9f | 1086 | if (w->active) { |
ec2e3031 | 1087 | out = is_connected_output_ep(w, NULL); |
ce6120cc | 1088 | dapm_clear_walk(w->dapm); |
6ea31b9f MB |
1089 | return out != 0; |
1090 | } else { | |
1091 | return dapm_generic_check_power(w); | |
1092 | } | |
1093 | } | |
1094 | ||
246d0a17 MB |
1095 | /* Check to see if a power supply is needed */ |
1096 | static int dapm_supply_check_power(struct snd_soc_dapm_widget *w) | |
1097 | { | |
1098 | struct snd_soc_dapm_path *path; | |
246d0a17 | 1099 | |
de02d078 MB |
1100 | DAPM_UPDATE_STAT(w, power_checks); |
1101 | ||
246d0a17 MB |
1102 | /* Check if one of our outputs is connected */ |
1103 | list_for_each_entry(path, &w->sinks, list_source) { | |
a8fdac83 MB |
1104 | DAPM_UPDATE_STAT(w, neighbour_checks); |
1105 | ||
bf3a9e13 MB |
1106 | if (path->weak) |
1107 | continue; | |
1108 | ||
215edda3 MB |
1109 | if (path->connected && |
1110 | !path->connected(path->source, path->sink)) | |
1111 | continue; | |
1112 | ||
3017358a MB |
1113 | if (!path->sink) |
1114 | continue; | |
1115 | ||
f68d7e16 MB |
1116 | if (dapm_widget_power_check(path->sink)) |
1117 | return 1; | |
246d0a17 MB |
1118 | } |
1119 | ||
ce6120cc | 1120 | dapm_clear_walk(w->dapm); |
246d0a17 | 1121 | |
f68d7e16 | 1122 | return 0; |
246d0a17 MB |
1123 | } |
1124 | ||
35c64bca MB |
1125 | static int dapm_always_on_check_power(struct snd_soc_dapm_widget *w) |
1126 | { | |
1127 | return 1; | |
1128 | } | |
1129 | ||
38357ab2 MB |
1130 | static int dapm_seq_compare(struct snd_soc_dapm_widget *a, |
1131 | struct snd_soc_dapm_widget *b, | |
828a842f | 1132 | bool power_up) |
42aa3418 | 1133 | { |
828a842f MB |
1134 | int *sort; |
1135 | ||
1136 | if (power_up) | |
1137 | sort = dapm_up_seq; | |
1138 | else | |
1139 | sort = dapm_down_seq; | |
1140 | ||
38357ab2 MB |
1141 | if (sort[a->id] != sort[b->id]) |
1142 | return sort[a->id] - sort[b->id]; | |
20e4859d MB |
1143 | if (a->subseq != b->subseq) { |
1144 | if (power_up) | |
1145 | return a->subseq - b->subseq; | |
1146 | else | |
1147 | return b->subseq - a->subseq; | |
1148 | } | |
b22ead2a MB |
1149 | if (a->reg != b->reg) |
1150 | return a->reg - b->reg; | |
84dab567 MB |
1151 | if (a->dapm != b->dapm) |
1152 | return (unsigned long)a->dapm - (unsigned long)b->dapm; | |
42aa3418 | 1153 | |
38357ab2 MB |
1154 | return 0; |
1155 | } | |
42aa3418 | 1156 | |
38357ab2 MB |
1157 | /* Insert a widget in order into a DAPM power sequence. */ |
1158 | static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget, | |
1159 | struct list_head *list, | |
828a842f | 1160 | bool power_up) |
38357ab2 MB |
1161 | { |
1162 | struct snd_soc_dapm_widget *w; | |
1163 | ||
1164 | list_for_each_entry(w, list, power_list) | |
828a842f | 1165 | if (dapm_seq_compare(new_widget, w, power_up) < 0) { |
38357ab2 MB |
1166 | list_add_tail(&new_widget->power_list, &w->power_list); |
1167 | return; | |
1168 | } | |
1169 | ||
1170 | list_add_tail(&new_widget->power_list, list); | |
1171 | } | |
1172 | ||
68f89ad8 MB |
1173 | static void dapm_seq_check_event(struct snd_soc_dapm_context *dapm, |
1174 | struct snd_soc_dapm_widget *w, int event) | |
1175 | { | |
1176 | struct snd_soc_card *card = dapm->card; | |
1177 | const char *ev_name; | |
1178 | int power, ret; | |
1179 | ||
1180 | switch (event) { | |
1181 | case SND_SOC_DAPM_PRE_PMU: | |
1182 | ev_name = "PRE_PMU"; | |
1183 | power = 1; | |
1184 | break; | |
1185 | case SND_SOC_DAPM_POST_PMU: | |
1186 | ev_name = "POST_PMU"; | |
1187 | power = 1; | |
1188 | break; | |
1189 | case SND_SOC_DAPM_PRE_PMD: | |
1190 | ev_name = "PRE_PMD"; | |
1191 | power = 0; | |
1192 | break; | |
1193 | case SND_SOC_DAPM_POST_PMD: | |
1194 | ev_name = "POST_PMD"; | |
1195 | power = 0; | |
1196 | break; | |
1197 | default: | |
1198 | BUG(); | |
1199 | return; | |
1200 | } | |
1201 | ||
1202 | if (w->power != power) | |
1203 | return; | |
1204 | ||
1205 | if (w->event && (w->event_flags & event)) { | |
1206 | pop_dbg(dapm->dev, card->pop_time, "pop test : %s %s\n", | |
1207 | w->name, ev_name); | |
84e90930 | 1208 | trace_snd_soc_dapm_widget_event_start(w, event); |
68f89ad8 | 1209 | ret = w->event(w, NULL, event); |
84e90930 | 1210 | trace_snd_soc_dapm_widget_event_done(w, event); |
68f89ad8 MB |
1211 | if (ret < 0) |
1212 | pr_err("%s: %s event failed: %d\n", | |
1213 | ev_name, w->name, ret); | |
1214 | } | |
1215 | } | |
1216 | ||
b22ead2a | 1217 | /* Apply the coalesced changes from a DAPM sequence */ |
ce6120cc | 1218 | static void dapm_seq_run_coalesced(struct snd_soc_dapm_context *dapm, |
b22ead2a | 1219 | struct list_head *pending) |
163cac06 | 1220 | { |
3a45b867 | 1221 | struct snd_soc_card *card = dapm->card; |
68f89ad8 MB |
1222 | struct snd_soc_dapm_widget *w; |
1223 | int reg, power; | |
b22ead2a MB |
1224 | unsigned int value = 0; |
1225 | unsigned int mask = 0; | |
1226 | unsigned int cur_mask; | |
1227 | ||
1228 | reg = list_first_entry(pending, struct snd_soc_dapm_widget, | |
1229 | power_list)->reg; | |
1230 | ||
1231 | list_for_each_entry(w, pending, power_list) { | |
1232 | cur_mask = 1 << w->shift; | |
1233 | BUG_ON(reg != w->reg); | |
1234 | ||
1235 | if (w->invert) | |
1236 | power = !w->power; | |
1237 | else | |
1238 | power = w->power; | |
1239 | ||
1240 | mask |= cur_mask; | |
1241 | if (power) | |
1242 | value |= cur_mask; | |
1243 | ||
fd8d3bc0 | 1244 | pop_dbg(dapm->dev, card->pop_time, |
b22ead2a MB |
1245 | "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n", |
1246 | w->name, reg, value, mask); | |
81628103 | 1247 | |
68f89ad8 MB |
1248 | /* Check for events */ |
1249 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMU); | |
1250 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMD); | |
81628103 MB |
1251 | } |
1252 | ||
1253 | if (reg >= 0) { | |
29376bc7 MB |
1254 | /* Any widget will do, they should all be updating the |
1255 | * same register. | |
1256 | */ | |
1257 | w = list_first_entry(pending, struct snd_soc_dapm_widget, | |
1258 | power_list); | |
1259 | ||
fd8d3bc0 | 1260 | pop_dbg(dapm->dev, card->pop_time, |
81628103 | 1261 | "pop test : Applying 0x%x/0x%x to %x in %dms\n", |
3a45b867 JN |
1262 | value, mask, reg, card->pop_time); |
1263 | pop_wait(card->pop_time); | |
49575fb5 | 1264 | soc_widget_update_bits_locked(w, reg, mask, value); |
b22ead2a MB |
1265 | } |
1266 | ||
81628103 | 1267 | list_for_each_entry(w, pending, power_list) { |
68f89ad8 MB |
1268 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMU); |
1269 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMD); | |
81628103 | 1270 | } |
b22ead2a | 1271 | } |
42aa3418 | 1272 | |
b22ead2a MB |
1273 | /* Apply a DAPM power sequence. |
1274 | * | |
1275 | * We walk over a pre-sorted list of widgets to apply power to. In | |
1276 | * order to minimise the number of writes to the device required | |
1277 | * multiple widgets will be updated in a single write where possible. | |
1278 | * Currently anything that requires more than a single write is not | |
1279 | * handled. | |
1280 | */ | |
ce6120cc | 1281 | static void dapm_seq_run(struct snd_soc_dapm_context *dapm, |
828a842f | 1282 | struct list_head *list, int event, bool power_up) |
b22ead2a MB |
1283 | { |
1284 | struct snd_soc_dapm_widget *w, *n; | |
1285 | LIST_HEAD(pending); | |
1286 | int cur_sort = -1; | |
20e4859d | 1287 | int cur_subseq = -1; |
b22ead2a | 1288 | int cur_reg = SND_SOC_NOPM; |
7be31be8 | 1289 | struct snd_soc_dapm_context *cur_dapm = NULL; |
474b62d6 | 1290 | int ret, i; |
828a842f MB |
1291 | int *sort; |
1292 | ||
1293 | if (power_up) | |
1294 | sort = dapm_up_seq; | |
1295 | else | |
1296 | sort = dapm_down_seq; | |
163cac06 | 1297 | |
b22ead2a MB |
1298 | list_for_each_entry_safe(w, n, list, power_list) { |
1299 | ret = 0; | |
1300 | ||
1301 | /* Do we need to apply any queued changes? */ | |
7be31be8 | 1302 | if (sort[w->id] != cur_sort || w->reg != cur_reg || |
20e4859d | 1303 | w->dapm != cur_dapm || w->subseq != cur_subseq) { |
b22ead2a | 1304 | if (!list_empty(&pending)) |
7be31be8 | 1305 | dapm_seq_run_coalesced(cur_dapm, &pending); |
b22ead2a | 1306 | |
474b62d6 MB |
1307 | if (cur_dapm && cur_dapm->seq_notifier) { |
1308 | for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++) | |
1309 | if (sort[i] == cur_sort) | |
1310 | cur_dapm->seq_notifier(cur_dapm, | |
f85a9e0d MB |
1311 | i, |
1312 | cur_subseq); | |
474b62d6 MB |
1313 | } |
1314 | ||
b22ead2a MB |
1315 | INIT_LIST_HEAD(&pending); |
1316 | cur_sort = -1; | |
b0b3e6f8 | 1317 | cur_subseq = INT_MIN; |
b22ead2a | 1318 | cur_reg = SND_SOC_NOPM; |
7be31be8 | 1319 | cur_dapm = NULL; |
b22ead2a MB |
1320 | } |
1321 | ||
163cac06 MB |
1322 | switch (w->id) { |
1323 | case snd_soc_dapm_pre: | |
1324 | if (!w->event) | |
b22ead2a MB |
1325 | list_for_each_entry_safe_continue(w, n, list, |
1326 | power_list); | |
163cac06 | 1327 | |
b22ead2a | 1328 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
1329 | ret = w->event(w, |
1330 | NULL, SND_SOC_DAPM_PRE_PMU); | |
b22ead2a | 1331 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
1332 | ret = w->event(w, |
1333 | NULL, SND_SOC_DAPM_PRE_PMD); | |
163cac06 MB |
1334 | break; |
1335 | ||
1336 | case snd_soc_dapm_post: | |
1337 | if (!w->event) | |
b22ead2a MB |
1338 | list_for_each_entry_safe_continue(w, n, list, |
1339 | power_list); | |
163cac06 | 1340 | |
b22ead2a | 1341 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
1342 | ret = w->event(w, |
1343 | NULL, SND_SOC_DAPM_POST_PMU); | |
b22ead2a | 1344 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
1345 | ret = w->event(w, |
1346 | NULL, SND_SOC_DAPM_POST_PMD); | |
163cac06 MB |
1347 | break; |
1348 | ||
b22ead2a | 1349 | default: |
81628103 MB |
1350 | /* Queue it up for application */ |
1351 | cur_sort = sort[w->id]; | |
20e4859d | 1352 | cur_subseq = w->subseq; |
81628103 | 1353 | cur_reg = w->reg; |
7be31be8 | 1354 | cur_dapm = w->dapm; |
81628103 MB |
1355 | list_move(&w->power_list, &pending); |
1356 | break; | |
163cac06 | 1357 | } |
b22ead2a MB |
1358 | |
1359 | if (ret < 0) | |
f7d41ae8 JN |
1360 | dev_err(w->dapm->dev, |
1361 | "Failed to apply widget power: %d\n", ret); | |
6ea31b9f | 1362 | } |
b22ead2a MB |
1363 | |
1364 | if (!list_empty(&pending)) | |
28e86808 | 1365 | dapm_seq_run_coalesced(cur_dapm, &pending); |
474b62d6 MB |
1366 | |
1367 | if (cur_dapm && cur_dapm->seq_notifier) { | |
1368 | for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++) | |
1369 | if (sort[i] == cur_sort) | |
1370 | cur_dapm->seq_notifier(cur_dapm, | |
f85a9e0d | 1371 | i, cur_subseq); |
474b62d6 | 1372 | } |
42aa3418 MB |
1373 | } |
1374 | ||
97404f2e MB |
1375 | static void dapm_widget_update(struct snd_soc_dapm_context *dapm) |
1376 | { | |
1377 | struct snd_soc_dapm_update *update = dapm->update; | |
1378 | struct snd_soc_dapm_widget *w; | |
1379 | int ret; | |
1380 | ||
1381 | if (!update) | |
1382 | return; | |
1383 | ||
1384 | w = update->widget; | |
1385 | ||
1386 | if (w->event && | |
1387 | (w->event_flags & SND_SOC_DAPM_PRE_REG)) { | |
1388 | ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG); | |
1389 | if (ret != 0) | |
1390 | pr_err("%s DAPM pre-event failed: %d\n", | |
1391 | w->name, ret); | |
1392 | } | |
1393 | ||
49575fb5 | 1394 | ret = soc_widget_update_bits_locked(w, update->reg, update->mask, |
97404f2e MB |
1395 | update->val); |
1396 | if (ret < 0) | |
1397 | pr_err("%s DAPM update failed: %d\n", w->name, ret); | |
1398 | ||
1399 | if (w->event && | |
1400 | (w->event_flags & SND_SOC_DAPM_POST_REG)) { | |
1401 | ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG); | |
1402 | if (ret != 0) | |
1403 | pr_err("%s DAPM post-event failed: %d\n", | |
1404 | w->name, ret); | |
1405 | } | |
1406 | } | |
1407 | ||
9d0624a7 MB |
1408 | /* Async callback run prior to DAPM sequences - brings to _PREPARE if |
1409 | * they're changing state. | |
1410 | */ | |
1411 | static void dapm_pre_sequence_async(void *data, async_cookie_t cookie) | |
1412 | { | |
1413 | struct snd_soc_dapm_context *d = data; | |
1414 | int ret; | |
1415 | ||
56fba41f MB |
1416 | /* If we're off and we're not supposed to be go into STANDBY */ |
1417 | if (d->bias_level == SND_SOC_BIAS_OFF && | |
1418 | d->target_bias_level != SND_SOC_BIAS_OFF) { | |
f1aac484 MB |
1419 | if (d->dev) |
1420 | pm_runtime_get_sync(d->dev); | |
1421 | ||
9d0624a7 MB |
1422 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY); |
1423 | if (ret != 0) | |
1424 | dev_err(d->dev, | |
1425 | "Failed to turn on bias: %d\n", ret); | |
1426 | } | |
1427 | ||
56fba41f MB |
1428 | /* Prepare for a STADDBY->ON or ON->STANDBY transition */ |
1429 | if (d->bias_level != d->target_bias_level) { | |
9d0624a7 MB |
1430 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE); |
1431 | if (ret != 0) | |
1432 | dev_err(d->dev, | |
1433 | "Failed to prepare bias: %d\n", ret); | |
1434 | } | |
1435 | } | |
1436 | ||
1437 | /* Async callback run prior to DAPM sequences - brings to their final | |
1438 | * state. | |
1439 | */ | |
1440 | static void dapm_post_sequence_async(void *data, async_cookie_t cookie) | |
1441 | { | |
1442 | struct snd_soc_dapm_context *d = data; | |
1443 | int ret; | |
1444 | ||
1445 | /* If we just powered the last thing off drop to standby bias */ | |
56fba41f MB |
1446 | if (d->bias_level == SND_SOC_BIAS_PREPARE && |
1447 | (d->target_bias_level == SND_SOC_BIAS_STANDBY || | |
1448 | d->target_bias_level == SND_SOC_BIAS_OFF)) { | |
9d0624a7 MB |
1449 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY); |
1450 | if (ret != 0) | |
1451 | dev_err(d->dev, "Failed to apply standby bias: %d\n", | |
1452 | ret); | |
1453 | } | |
97404f2e | 1454 | |
9d0624a7 | 1455 | /* If we're in standby and can support bias off then do that */ |
56fba41f MB |
1456 | if (d->bias_level == SND_SOC_BIAS_STANDBY && |
1457 | d->target_bias_level == SND_SOC_BIAS_OFF) { | |
9d0624a7 MB |
1458 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF); |
1459 | if (ret != 0) | |
1460 | dev_err(d->dev, "Failed to turn off bias: %d\n", ret); | |
f1aac484 MB |
1461 | |
1462 | if (d->dev) | |
fb644e9c | 1463 | pm_runtime_put(d->dev); |
9d0624a7 MB |
1464 | } |
1465 | ||
1466 | /* If we just powered up then move to active bias */ | |
56fba41f MB |
1467 | if (d->bias_level == SND_SOC_BIAS_PREPARE && |
1468 | d->target_bias_level == SND_SOC_BIAS_ON) { | |
9d0624a7 MB |
1469 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON); |
1470 | if (ret != 0) | |
1471 | dev_err(d->dev, "Failed to apply active bias: %d\n", | |
1472 | ret); | |
1473 | } | |
1474 | } | |
97404f2e | 1475 | |
fe4fda5d MB |
1476 | static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget *peer, |
1477 | bool power, bool connect) | |
1478 | { | |
1479 | /* If a connection is being made or broken then that update | |
1480 | * will have marked the peer dirty, otherwise the widgets are | |
1481 | * not connected and this update has no impact. */ | |
1482 | if (!connect) | |
1483 | return; | |
1484 | ||
1485 | /* If the peer is already in the state we're moving to then we | |
1486 | * won't have an impact on it. */ | |
1487 | if (power != peer->power) | |
75c1f891 | 1488 | dapm_mark_dirty(peer, "peer state change"); |
fe4fda5d MB |
1489 | } |
1490 | ||
05623c43 MB |
1491 | static void dapm_widget_set_power(struct snd_soc_dapm_widget *w, bool power, |
1492 | struct list_head *up_list, | |
1493 | struct list_head *down_list) | |
1494 | { | |
db432b41 MB |
1495 | struct snd_soc_dapm_path *path; |
1496 | ||
05623c43 MB |
1497 | if (w->power == power) |
1498 | return; | |
1499 | ||
1500 | trace_snd_soc_dapm_widget_power(w, power); | |
1501 | ||
db432b41 | 1502 | /* If we changed our power state perhaps our neigbours changed |
fe4fda5d | 1503 | * also. |
db432b41 MB |
1504 | */ |
1505 | list_for_each_entry(path, &w->sources, list_sink) { | |
1506 | if (path->source) { | |
fe4fda5d MB |
1507 | dapm_widget_set_peer_power(path->source, power, |
1508 | path->connect); | |
db432b41 MB |
1509 | } |
1510 | } | |
f3bf3e45 MB |
1511 | switch (w->id) { |
1512 | case snd_soc_dapm_supply: | |
62ea874a | 1513 | case snd_soc_dapm_regulator_supply: |
d7e7eb91 | 1514 | case snd_soc_dapm_clock_supply: |
f3bf3e45 MB |
1515 | /* Supplies can't affect their outputs, only their inputs */ |
1516 | break; | |
1517 | default: | |
1518 | list_for_each_entry(path, &w->sinks, list_source) { | |
1519 | if (path->sink) { | |
1520 | dapm_widget_set_peer_power(path->sink, power, | |
1521 | path->connect); | |
1522 | } | |
db432b41 | 1523 | } |
f3bf3e45 | 1524 | break; |
db432b41 MB |
1525 | } |
1526 | ||
05623c43 MB |
1527 | if (power) |
1528 | dapm_seq_insert(w, up_list, true); | |
1529 | else | |
1530 | dapm_seq_insert(w, down_list, false); | |
1531 | ||
1532 | w->power = power; | |
1533 | } | |
1534 | ||
7c81beb0 MB |
1535 | static void dapm_power_one_widget(struct snd_soc_dapm_widget *w, |
1536 | struct list_head *up_list, | |
1537 | struct list_head *down_list) | |
1538 | { | |
7c81beb0 MB |
1539 | int power; |
1540 | ||
1541 | switch (w->id) { | |
1542 | case snd_soc_dapm_pre: | |
1543 | dapm_seq_insert(w, down_list, false); | |
1544 | break; | |
1545 | case snd_soc_dapm_post: | |
1546 | dapm_seq_insert(w, up_list, true); | |
1547 | break; | |
1548 | ||
1549 | default: | |
d805002b | 1550 | power = dapm_widget_power_check(w); |
7c81beb0 | 1551 | |
05623c43 | 1552 | dapm_widget_set_power(w, power, up_list, down_list); |
7c81beb0 MB |
1553 | break; |
1554 | } | |
1555 | } | |
1556 | ||
2b97eabc RP |
1557 | /* |
1558 | * Scan each dapm widget for complete audio path. | |
1559 | * A complete path is a route that has valid endpoints i.e.:- | |
1560 | * | |
1561 | * o DAC to output pin. | |
1562 | * o Input Pin to ADC. | |
1563 | * o Input pin to Output pin (bypass, sidetone) | |
1564 | * o DAC to ADC (loopback). | |
1565 | */ | |
ce6120cc | 1566 | static int dapm_power_widgets(struct snd_soc_dapm_context *dapm, int event) |
2b97eabc | 1567 | { |
12ea2c78 | 1568 | struct snd_soc_card *card = dapm->card; |
2b97eabc | 1569 | struct snd_soc_dapm_widget *w; |
7be31be8 | 1570 | struct snd_soc_dapm_context *d; |
291f3bbc MB |
1571 | LIST_HEAD(up_list); |
1572 | LIST_HEAD(down_list); | |
9d0624a7 | 1573 | LIST_HEAD(async_domain); |
56fba41f | 1574 | enum snd_soc_bias_level bias; |
6d3ddc81 | 1575 | |
84e90930 MB |
1576 | trace_snd_soc_dapm_start(card); |
1577 | ||
56fba41f | 1578 | list_for_each_entry(d, &card->dapm_list, list) { |
497098be MB |
1579 | if (d->idle_bias_off) |
1580 | d->target_bias_level = SND_SOC_BIAS_OFF; | |
1581 | else | |
1582 | d->target_bias_level = SND_SOC_BIAS_STANDBY; | |
56fba41f | 1583 | } |
7be31be8 | 1584 | |
6c120e19 | 1585 | dapm_reset(card); |
9b8a83b2 | 1586 | |
6d3ddc81 | 1587 | /* Check which widgets we need to power and store them in |
db432b41 MB |
1588 | * lists indicating if they should be powered up or down. We |
1589 | * only check widgets that have been flagged as dirty but note | |
1590 | * that new widgets may be added to the dirty list while we | |
1591 | * iterate. | |
6d3ddc81 | 1592 | */ |
db432b41 | 1593 | list_for_each_entry(w, &card->dapm_dirty, dirty) { |
7c81beb0 | 1594 | dapm_power_one_widget(w, &up_list, &down_list); |
2b97eabc RP |
1595 | } |
1596 | ||
f9de6d74 | 1597 | list_for_each_entry(w, &card->widgets, list) { |
db432b41 MB |
1598 | list_del_init(&w->dirty); |
1599 | ||
f9de6d74 MB |
1600 | if (w->power) { |
1601 | d = w->dapm; | |
1602 | ||
1603 | /* Supplies and micbiases only bring the | |
1604 | * context up to STANDBY as unless something | |
1605 | * else is active and passing audio they | |
afe62367 MB |
1606 | * generally don't require full power. Signal |
1607 | * generators are virtual pins and have no | |
1608 | * power impact themselves. | |
f9de6d74 MB |
1609 | */ |
1610 | switch (w->id) { | |
afe62367 MB |
1611 | case snd_soc_dapm_siggen: |
1612 | break; | |
f9de6d74 | 1613 | case snd_soc_dapm_supply: |
62ea874a | 1614 | case snd_soc_dapm_regulator_supply: |
d7e7eb91 | 1615 | case snd_soc_dapm_clock_supply: |
f9de6d74 MB |
1616 | case snd_soc_dapm_micbias: |
1617 | if (d->target_bias_level < SND_SOC_BIAS_STANDBY) | |
1618 | d->target_bias_level = SND_SOC_BIAS_STANDBY; | |
1619 | break; | |
1620 | default: | |
1621 | d->target_bias_level = SND_SOC_BIAS_ON; | |
1622 | break; | |
1623 | } | |
1624 | } | |
1625 | ||
1626 | } | |
1627 | ||
85a843c5 MB |
1628 | /* Force all contexts in the card to the same bias state if |
1629 | * they're not ground referenced. | |
1630 | */ | |
56fba41f | 1631 | bias = SND_SOC_BIAS_OFF; |
52ba67bf | 1632 | list_for_each_entry(d, &card->dapm_list, list) |
56fba41f MB |
1633 | if (d->target_bias_level > bias) |
1634 | bias = d->target_bias_level; | |
52ba67bf | 1635 | list_for_each_entry(d, &card->dapm_list, list) |
85a843c5 MB |
1636 | if (!d->idle_bias_off) |
1637 | d->target_bias_level = bias; | |
52ba67bf | 1638 | |
de02d078 | 1639 | trace_snd_soc_dapm_walk_done(card); |
52ba67bf | 1640 | |
9d0624a7 MB |
1641 | /* Run all the bias changes in parallel */ |
1642 | list_for_each_entry(d, &dapm->card->dapm_list, list) | |
1643 | async_schedule_domain(dapm_pre_sequence_async, d, | |
1644 | &async_domain); | |
1645 | async_synchronize_full_domain(&async_domain); | |
452c5eaa | 1646 | |
6d3ddc81 | 1647 | /* Power down widgets first; try to avoid amplifying pops. */ |
828a842f | 1648 | dapm_seq_run(dapm, &down_list, event, false); |
2b97eabc | 1649 | |
97404f2e MB |
1650 | dapm_widget_update(dapm); |
1651 | ||
6d3ddc81 | 1652 | /* Now power up. */ |
828a842f | 1653 | dapm_seq_run(dapm, &up_list, event, true); |
2b97eabc | 1654 | |
9d0624a7 MB |
1655 | /* Run all the bias changes in parallel */ |
1656 | list_for_each_entry(d, &dapm->card->dapm_list, list) | |
1657 | async_schedule_domain(dapm_post_sequence_async, d, | |
1658 | &async_domain); | |
1659 | async_synchronize_full_domain(&async_domain); | |
452c5eaa | 1660 | |
8078d87f LG |
1661 | /* do we need to notify any clients that DAPM event is complete */ |
1662 | list_for_each_entry(d, &card->dapm_list, list) { | |
1663 | if (d->stream_event) | |
1664 | d->stream_event(d, event); | |
1665 | } | |
1666 | ||
fd8d3bc0 JN |
1667 | pop_dbg(dapm->dev, card->pop_time, |
1668 | "DAPM sequencing finished, waiting %dms\n", card->pop_time); | |
3a45b867 | 1669 | pop_wait(card->pop_time); |
cb507e7e | 1670 | |
84e90930 MB |
1671 | trace_snd_soc_dapm_done(card); |
1672 | ||
42aa3418 | 1673 | return 0; |
2b97eabc RP |
1674 | } |
1675 | ||
79fb9387 | 1676 | #ifdef CONFIG_DEBUG_FS |
79fb9387 MB |
1677 | static ssize_t dapm_widget_power_read_file(struct file *file, |
1678 | char __user *user_buf, | |
1679 | size_t count, loff_t *ppos) | |
1680 | { | |
1681 | struct snd_soc_dapm_widget *w = file->private_data; | |
1682 | char *buf; | |
1683 | int in, out; | |
1684 | ssize_t ret; | |
1685 | struct snd_soc_dapm_path *p = NULL; | |
1686 | ||
1687 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); | |
1688 | if (!buf) | |
1689 | return -ENOMEM; | |
1690 | ||
ec2e3031 | 1691 | in = is_connected_input_ep(w, NULL); |
ce6120cc | 1692 | dapm_clear_walk(w->dapm); |
ec2e3031 | 1693 | out = is_connected_output_ep(w, NULL); |
ce6120cc | 1694 | dapm_clear_walk(w->dapm); |
79fb9387 | 1695 | |
f13ebada MB |
1696 | ret = snprintf(buf, PAGE_SIZE, "%s: %s%s in %d out %d", |
1697 | w->name, w->power ? "On" : "Off", | |
1698 | w->force ? " (forced)" : "", in, out); | |
79fb9387 | 1699 | |
d033c36a MB |
1700 | if (w->reg >= 0) |
1701 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
1702 | " - R%d(0x%x) bit %d", | |
1703 | w->reg, w->reg, w->shift); | |
1704 | ||
1705 | ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n"); | |
1706 | ||
3eef08ba MB |
1707 | if (w->sname) |
1708 | ret += snprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n", | |
1709 | w->sname, | |
1710 | w->active ? "active" : "inactive"); | |
79fb9387 MB |
1711 | |
1712 | list_for_each_entry(p, &w->sources, list_sink) { | |
215edda3 MB |
1713 | if (p->connected && !p->connected(w, p->sink)) |
1714 | continue; | |
1715 | ||
79fb9387 MB |
1716 | if (p->connect) |
1717 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
67f5ed6e | 1718 | " in \"%s\" \"%s\"\n", |
79fb9387 MB |
1719 | p->name ? p->name : "static", |
1720 | p->source->name); | |
1721 | } | |
1722 | list_for_each_entry(p, &w->sinks, list_source) { | |
215edda3 MB |
1723 | if (p->connected && !p->connected(w, p->sink)) |
1724 | continue; | |
1725 | ||
79fb9387 MB |
1726 | if (p->connect) |
1727 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
67f5ed6e | 1728 | " out \"%s\" \"%s\"\n", |
79fb9387 MB |
1729 | p->name ? p->name : "static", |
1730 | p->sink->name); | |
1731 | } | |
1732 | ||
1733 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); | |
1734 | ||
1735 | kfree(buf); | |
1736 | return ret; | |
1737 | } | |
1738 | ||
1739 | static const struct file_operations dapm_widget_power_fops = { | |
234e3405 | 1740 | .open = simple_open, |
79fb9387 | 1741 | .read = dapm_widget_power_read_file, |
6038f373 | 1742 | .llseek = default_llseek, |
79fb9387 MB |
1743 | }; |
1744 | ||
ef49e4fa MB |
1745 | static ssize_t dapm_bias_read_file(struct file *file, char __user *user_buf, |
1746 | size_t count, loff_t *ppos) | |
1747 | { | |
1748 | struct snd_soc_dapm_context *dapm = file->private_data; | |
1749 | char *level; | |
1750 | ||
1751 | switch (dapm->bias_level) { | |
1752 | case SND_SOC_BIAS_ON: | |
1753 | level = "On\n"; | |
1754 | break; | |
1755 | case SND_SOC_BIAS_PREPARE: | |
1756 | level = "Prepare\n"; | |
1757 | break; | |
1758 | case SND_SOC_BIAS_STANDBY: | |
1759 | level = "Standby\n"; | |
1760 | break; | |
1761 | case SND_SOC_BIAS_OFF: | |
1762 | level = "Off\n"; | |
1763 | break; | |
1764 | default: | |
1765 | BUG(); | |
1766 | level = "Unknown\n"; | |
1767 | break; | |
1768 | } | |
1769 | ||
1770 | return simple_read_from_buffer(user_buf, count, ppos, level, | |
1771 | strlen(level)); | |
1772 | } | |
1773 | ||
1774 | static const struct file_operations dapm_bias_fops = { | |
234e3405 | 1775 | .open = simple_open, |
ef49e4fa MB |
1776 | .read = dapm_bias_read_file, |
1777 | .llseek = default_llseek, | |
1778 | }; | |
1779 | ||
8eecaf62 LPC |
1780 | void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm, |
1781 | struct dentry *parent) | |
79fb9387 | 1782 | { |
79fb9387 MB |
1783 | struct dentry *d; |
1784 | ||
8eecaf62 LPC |
1785 | dapm->debugfs_dapm = debugfs_create_dir("dapm", parent); |
1786 | ||
1787 | if (!dapm->debugfs_dapm) { | |
f1e90af2 | 1788 | dev_warn(dapm->dev, |
8eecaf62 | 1789 | "Failed to create DAPM debugfs directory\n"); |
79fb9387 | 1790 | return; |
8eecaf62 | 1791 | } |
79fb9387 | 1792 | |
ef49e4fa MB |
1793 | d = debugfs_create_file("bias_level", 0444, |
1794 | dapm->debugfs_dapm, dapm, | |
1795 | &dapm_bias_fops); | |
1796 | if (!d) | |
1797 | dev_warn(dapm->dev, | |
1798 | "ASoC: Failed to create bias level debugfs file\n"); | |
d5d1e0be | 1799 | } |
ef49e4fa | 1800 | |
d5d1e0be LPC |
1801 | static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w) |
1802 | { | |
1803 | struct snd_soc_dapm_context *dapm = w->dapm; | |
1804 | struct dentry *d; | |
79fb9387 | 1805 | |
d5d1e0be LPC |
1806 | if (!dapm->debugfs_dapm || !w->name) |
1807 | return; | |
1808 | ||
1809 | d = debugfs_create_file(w->name, 0444, | |
1810 | dapm->debugfs_dapm, w, | |
1811 | &dapm_widget_power_fops); | |
1812 | if (!d) | |
1813 | dev_warn(w->dapm->dev, | |
1814 | "ASoC: Failed to create %s debugfs file\n", | |
1815 | w->name); | |
79fb9387 | 1816 | } |
d5d1e0be | 1817 | |
6c45e126 LPC |
1818 | static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm) |
1819 | { | |
1820 | debugfs_remove_recursive(dapm->debugfs_dapm); | |
1821 | } | |
1822 | ||
79fb9387 | 1823 | #else |
8eecaf62 LPC |
1824 | void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm, |
1825 | struct dentry *parent) | |
79fb9387 MB |
1826 | { |
1827 | } | |
d5d1e0be LPC |
1828 | |
1829 | static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w) | |
1830 | { | |
1831 | } | |
1832 | ||
6c45e126 LPC |
1833 | static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm) |
1834 | { | |
1835 | } | |
1836 | ||
79fb9387 MB |
1837 | #endif |
1838 | ||
2b97eabc | 1839 | /* test and update the power status of a mux widget */ |
4edbb345 | 1840 | static int soc_dapm_mux_update_power(struct snd_soc_dapm_widget *widget, |
40f02cd9 | 1841 | struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e) |
2b97eabc RP |
1842 | { |
1843 | struct snd_soc_dapm_path *path; | |
1844 | int found = 0; | |
1845 | ||
eff317d0 | 1846 | if (widget->id != snd_soc_dapm_mux && |
24ff33ac | 1847 | widget->id != snd_soc_dapm_virt_mux && |
eff317d0 | 1848 | widget->id != snd_soc_dapm_value_mux) |
2b97eabc RP |
1849 | return -ENODEV; |
1850 | ||
2b97eabc | 1851 | /* find dapm widget path assoc with kcontrol */ |
8ddab3f5 | 1852 | list_for_each_entry(path, &widget->dapm->card->paths, list) { |
2b97eabc RP |
1853 | if (path->kcontrol != kcontrol) |
1854 | continue; | |
1855 | ||
cb01e2b9 | 1856 | if (!path->name || !e->texts[mux]) |
2b97eabc RP |
1857 | continue; |
1858 | ||
1859 | found = 1; | |
1860 | /* we now need to match the string in the enum to the path */ | |
db432b41 | 1861 | if (!(strcmp(path->name, e->texts[mux]))) { |
2b97eabc | 1862 | path->connect = 1; /* new connection */ |
75c1f891 | 1863 | dapm_mark_dirty(path->source, "mux connection"); |
db432b41 MB |
1864 | } else { |
1865 | if (path->connect) | |
75c1f891 MB |
1866 | dapm_mark_dirty(path->source, |
1867 | "mux disconnection"); | |
2b97eabc | 1868 | path->connect = 0; /* old connection must be powered down */ |
db432b41 | 1869 | } |
2b97eabc RP |
1870 | } |
1871 | ||
db432b41 | 1872 | if (found) { |
75c1f891 | 1873 | dapm_mark_dirty(widget, "mux change"); |
ce6120cc | 1874 | dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP); |
db432b41 | 1875 | } |
2b97eabc | 1876 | |
618dae11 | 1877 | return found; |
2b97eabc | 1878 | } |
4edbb345 LG |
1879 | |
1880 | int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_widget *widget, | |
1881 | struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e) | |
1882 | { | |
1883 | struct snd_soc_card *card = widget->dapm->card; | |
1884 | int ret; | |
1885 | ||
3cd04343 | 1886 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
4edbb345 LG |
1887 | ret = soc_dapm_mux_update_power(widget, kcontrol, mux, e); |
1888 | mutex_unlock(&card->dapm_mutex); | |
618dae11 LG |
1889 | if (ret > 0) |
1890 | soc_dpcm_runtime_update(widget); | |
4edbb345 LG |
1891 | return ret; |
1892 | } | |
40f02cd9 | 1893 | EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power); |
2b97eabc | 1894 | |
1b075e3f | 1895 | /* test and update the power status of a mixer or switch widget */ |
4edbb345 | 1896 | static int soc_dapm_mixer_update_power(struct snd_soc_dapm_widget *widget, |
283375ce | 1897 | struct snd_kcontrol *kcontrol, int connect) |
2b97eabc RP |
1898 | { |
1899 | struct snd_soc_dapm_path *path; | |
1900 | int found = 0; | |
1901 | ||
1b075e3f | 1902 | if (widget->id != snd_soc_dapm_mixer && |
ca9c1aae | 1903 | widget->id != snd_soc_dapm_mixer_named_ctl && |
1b075e3f | 1904 | widget->id != snd_soc_dapm_switch) |
2b97eabc RP |
1905 | return -ENODEV; |
1906 | ||
2b97eabc | 1907 | /* find dapm widget path assoc with kcontrol */ |
8ddab3f5 | 1908 | list_for_each_entry(path, &widget->dapm->card->paths, list) { |
2b97eabc RP |
1909 | if (path->kcontrol != kcontrol) |
1910 | continue; | |
1911 | ||
1912 | /* found, now check type */ | |
1913 | found = 1; | |
283375ce | 1914 | path->connect = connect; |
75c1f891 | 1915 | dapm_mark_dirty(path->source, "mixer connection"); |
2b97eabc RP |
1916 | } |
1917 | ||
db432b41 | 1918 | if (found) { |
75c1f891 | 1919 | dapm_mark_dirty(widget, "mixer update"); |
ce6120cc | 1920 | dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP); |
db432b41 | 1921 | } |
2b97eabc | 1922 | |
618dae11 | 1923 | return found; |
2b97eabc | 1924 | } |
4edbb345 LG |
1925 | |
1926 | int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_widget *widget, | |
1927 | struct snd_kcontrol *kcontrol, int connect) | |
1928 | { | |
1929 | struct snd_soc_card *card = widget->dapm->card; | |
1930 | int ret; | |
1931 | ||
3cd04343 | 1932 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
4edbb345 LG |
1933 | ret = soc_dapm_mixer_update_power(widget, kcontrol, connect); |
1934 | mutex_unlock(&card->dapm_mutex); | |
618dae11 LG |
1935 | if (ret > 0) |
1936 | soc_dpcm_runtime_update(widget); | |
4edbb345 LG |
1937 | return ret; |
1938 | } | |
40f02cd9 | 1939 | EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power); |
2b97eabc RP |
1940 | |
1941 | /* show dapm widget status in sys fs */ | |
1942 | static ssize_t dapm_widget_show(struct device *dev, | |
1943 | struct device_attribute *attr, char *buf) | |
1944 | { | |
36ae1a96 | 1945 | struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev); |
f0fba2ad | 1946 | struct snd_soc_codec *codec =rtd->codec; |
2b97eabc RP |
1947 | struct snd_soc_dapm_widget *w; |
1948 | int count = 0; | |
1949 | char *state = "not set"; | |
1950 | ||
97c866de JN |
1951 | list_for_each_entry(w, &codec->card->widgets, list) { |
1952 | if (w->dapm != &codec->dapm) | |
1953 | continue; | |
2b97eabc RP |
1954 | |
1955 | /* only display widgets that burnm power */ | |
1956 | switch (w->id) { | |
1957 | case snd_soc_dapm_hp: | |
1958 | case snd_soc_dapm_mic: | |
1959 | case snd_soc_dapm_spk: | |
1960 | case snd_soc_dapm_line: | |
1961 | case snd_soc_dapm_micbias: | |
1962 | case snd_soc_dapm_dac: | |
1963 | case snd_soc_dapm_adc: | |
1964 | case snd_soc_dapm_pga: | |
d88429a6 | 1965 | case snd_soc_dapm_out_drv: |
2b97eabc | 1966 | case snd_soc_dapm_mixer: |
ca9c1aae | 1967 | case snd_soc_dapm_mixer_named_ctl: |
246d0a17 | 1968 | case snd_soc_dapm_supply: |
62ea874a | 1969 | case snd_soc_dapm_regulator_supply: |
d7e7eb91 | 1970 | case snd_soc_dapm_clock_supply: |
2b97eabc RP |
1971 | if (w->name) |
1972 | count += sprintf(buf + count, "%s: %s\n", | |
1973 | w->name, w->power ? "On":"Off"); | |
1974 | break; | |
1975 | default: | |
1976 | break; | |
1977 | } | |
1978 | } | |
1979 | ||
ce6120cc | 1980 | switch (codec->dapm.bias_level) { |
0be9898a MB |
1981 | case SND_SOC_BIAS_ON: |
1982 | state = "On"; | |
2b97eabc | 1983 | break; |
0be9898a MB |
1984 | case SND_SOC_BIAS_PREPARE: |
1985 | state = "Prepare"; | |
2b97eabc | 1986 | break; |
0be9898a MB |
1987 | case SND_SOC_BIAS_STANDBY: |
1988 | state = "Standby"; | |
2b97eabc | 1989 | break; |
0be9898a MB |
1990 | case SND_SOC_BIAS_OFF: |
1991 | state = "Off"; | |
2b97eabc RP |
1992 | break; |
1993 | } | |
1994 | count += sprintf(buf + count, "PM State: %s\n", state); | |
1995 | ||
1996 | return count; | |
1997 | } | |
1998 | ||
1999 | static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL); | |
2000 | ||
2001 | int snd_soc_dapm_sys_add(struct device *dev) | |
2002 | { | |
12ef193d | 2003 | return device_create_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
2004 | } |
2005 | ||
2006 | static void snd_soc_dapm_sys_remove(struct device *dev) | |
2007 | { | |
aef90843 | 2008 | device_remove_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
2009 | } |
2010 | ||
2011 | /* free all dapm widgets and resources */ | |
ce6120cc | 2012 | static void dapm_free_widgets(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
2013 | { |
2014 | struct snd_soc_dapm_widget *w, *next_w; | |
2015 | struct snd_soc_dapm_path *p, *next_p; | |
2016 | ||
97c866de JN |
2017 | list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) { |
2018 | if (w->dapm != dapm) | |
2019 | continue; | |
2b97eabc | 2020 | list_del(&w->list); |
8ddab3f5 JN |
2021 | /* |
2022 | * remove source and sink paths associated to this widget. | |
2023 | * While removing the path, remove reference to it from both | |
2024 | * source and sink widgets so that path is removed only once. | |
2025 | */ | |
2026 | list_for_each_entry_safe(p, next_p, &w->sources, list_sink) { | |
2027 | list_del(&p->list_sink); | |
2028 | list_del(&p->list_source); | |
2029 | list_del(&p->list); | |
2030 | kfree(p->long_name); | |
2031 | kfree(p); | |
2032 | } | |
2033 | list_for_each_entry_safe(p, next_p, &w->sinks, list_source) { | |
2034 | list_del(&p->list_sink); | |
2035 | list_del(&p->list_source); | |
2036 | list_del(&p->list); | |
2037 | kfree(p->long_name); | |
2038 | kfree(p); | |
2039 | } | |
fad59888 | 2040 | kfree(w->kcontrols); |
ead9b919 | 2041 | kfree(w->name); |
2b97eabc RP |
2042 | kfree(w); |
2043 | } | |
2b97eabc RP |
2044 | } |
2045 | ||
91a5fca4 LPC |
2046 | static struct snd_soc_dapm_widget *dapm_find_widget( |
2047 | struct snd_soc_dapm_context *dapm, const char *pin, | |
2048 | bool search_other_contexts) | |
a5302181 LG |
2049 | { |
2050 | struct snd_soc_dapm_widget *w; | |
91a5fca4 | 2051 | struct snd_soc_dapm_widget *fallback = NULL; |
a5302181 | 2052 | |
97c866de | 2053 | list_for_each_entry(w, &dapm->card->widgets, list) { |
a5302181 | 2054 | if (!strcmp(w->name, pin)) { |
91a5fca4 LPC |
2055 | if (w->dapm == dapm) |
2056 | return w; | |
2057 | else | |
2058 | fallback = w; | |
a5302181 LG |
2059 | } |
2060 | } | |
2061 | ||
91a5fca4 LPC |
2062 | if (search_other_contexts) |
2063 | return fallback; | |
2064 | ||
2065 | return NULL; | |
2066 | } | |
2067 | ||
2068 | static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm, | |
2069 | const char *pin, int status) | |
2070 | { | |
2071 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); | |
2072 | ||
2073 | if (!w) { | |
2074 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); | |
2075 | return -EINVAL; | |
0d86733c MB |
2076 | } |
2077 | ||
1a8b2d9d MB |
2078 | if (w->connected != status) |
2079 | dapm_mark_dirty(w, "pin configuration"); | |
2080 | ||
91a5fca4 LPC |
2081 | w->connected = status; |
2082 | if (status == 0) | |
2083 | w->force = 0; | |
2084 | ||
2085 | return 0; | |
a5302181 LG |
2086 | } |
2087 | ||
2b97eabc | 2088 | /** |
a5302181 | 2089 | * snd_soc_dapm_sync - scan and power dapm paths |
ce6120cc | 2090 | * @dapm: DAPM context |
2b97eabc RP |
2091 | * |
2092 | * Walks all dapm audio paths and powers widgets according to their | |
2093 | * stream or path usage. | |
2094 | * | |
2095 | * Returns 0 for success. | |
2096 | */ | |
ce6120cc | 2097 | int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm) |
2b97eabc | 2098 | { |
a73fb2df LG |
2099 | int ret; |
2100 | ||
4f4c0072 MB |
2101 | /* |
2102 | * Suppress early reports (eg, jacks syncing their state) to avoid | |
2103 | * silly DAPM runs during card startup. | |
2104 | */ | |
2105 | if (!dapm->card || !dapm->card->instantiated) | |
2106 | return 0; | |
2107 | ||
3cd04343 | 2108 | mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
a73fb2df LG |
2109 | ret = dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP); |
2110 | mutex_unlock(&dapm->card->dapm_mutex); | |
2111 | return ret; | |
2b97eabc | 2112 | } |
a5302181 | 2113 | EXPORT_SYMBOL_GPL(snd_soc_dapm_sync); |
2b97eabc | 2114 | |
ce6120cc | 2115 | static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm, |
215edda3 | 2116 | const struct snd_soc_dapm_route *route) |
2b97eabc RP |
2117 | { |
2118 | struct snd_soc_dapm_path *path; | |
2119 | struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w; | |
97c866de | 2120 | struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL; |
ead9b919 | 2121 | const char *sink; |
215edda3 | 2122 | const char *control = route->control; |
ead9b919 JN |
2123 | const char *source; |
2124 | char prefixed_sink[80]; | |
2125 | char prefixed_source[80]; | |
2b97eabc RP |
2126 | int ret = 0; |
2127 | ||
88e8b9a8 | 2128 | if (dapm->codec && dapm->codec->name_prefix) { |
ead9b919 JN |
2129 | snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s", |
2130 | dapm->codec->name_prefix, route->sink); | |
2131 | sink = prefixed_sink; | |
2132 | snprintf(prefixed_source, sizeof(prefixed_source), "%s %s", | |
2133 | dapm->codec->name_prefix, route->source); | |
2134 | source = prefixed_source; | |
2135 | } else { | |
2136 | sink = route->sink; | |
2137 | source = route->source; | |
2138 | } | |
2139 | ||
97c866de JN |
2140 | /* |
2141 | * find src and dest widgets over all widgets but favor a widget from | |
2142 | * current DAPM context | |
2143 | */ | |
2144 | list_for_each_entry(w, &dapm->card->widgets, list) { | |
2b97eabc | 2145 | if (!wsink && !(strcmp(w->name, sink))) { |
97c866de JN |
2146 | wtsink = w; |
2147 | if (w->dapm == dapm) | |
2148 | wsink = w; | |
2b97eabc RP |
2149 | continue; |
2150 | } | |
2151 | if (!wsource && !(strcmp(w->name, source))) { | |
97c866de JN |
2152 | wtsource = w; |
2153 | if (w->dapm == dapm) | |
2154 | wsource = w; | |
2b97eabc RP |
2155 | } |
2156 | } | |
97c866de JN |
2157 | /* use widget from another DAPM context if not found from this */ |
2158 | if (!wsink) | |
2159 | wsink = wtsink; | |
2160 | if (!wsource) | |
2161 | wsource = wtsource; | |
2b97eabc RP |
2162 | |
2163 | if (wsource == NULL || wsink == NULL) | |
2164 | return -ENODEV; | |
2165 | ||
2166 | path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL); | |
2167 | if (!path) | |
2168 | return -ENOMEM; | |
2169 | ||
2170 | path->source = wsource; | |
2171 | path->sink = wsink; | |
215edda3 | 2172 | path->connected = route->connected; |
2b97eabc RP |
2173 | INIT_LIST_HEAD(&path->list); |
2174 | INIT_LIST_HEAD(&path->list_source); | |
2175 | INIT_LIST_HEAD(&path->list_sink); | |
2176 | ||
2177 | /* check for external widgets */ | |
2178 | if (wsink->id == snd_soc_dapm_input) { | |
2179 | if (wsource->id == snd_soc_dapm_micbias || | |
2180 | wsource->id == snd_soc_dapm_mic || | |
087d53ab RC |
2181 | wsource->id == snd_soc_dapm_line || |
2182 | wsource->id == snd_soc_dapm_output) | |
2b97eabc RP |
2183 | wsink->ext = 1; |
2184 | } | |
2185 | if (wsource->id == snd_soc_dapm_output) { | |
2186 | if (wsink->id == snd_soc_dapm_spk || | |
2187 | wsink->id == snd_soc_dapm_hp || | |
1e39221e SF |
2188 | wsink->id == snd_soc_dapm_line || |
2189 | wsink->id == snd_soc_dapm_input) | |
2b97eabc RP |
2190 | wsource->ext = 1; |
2191 | } | |
2192 | ||
2193 | /* connect static paths */ | |
2194 | if (control == NULL) { | |
8ddab3f5 | 2195 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
2196 | list_add(&path->list_sink, &wsink->sources); |
2197 | list_add(&path->list_source, &wsource->sinks); | |
2198 | path->connect = 1; | |
2199 | return 0; | |
2200 | } | |
2201 | ||
2202 | /* connect dynamic paths */ | |
dc2bea61 | 2203 | switch (wsink->id) { |
2b97eabc RP |
2204 | case snd_soc_dapm_adc: |
2205 | case snd_soc_dapm_dac: | |
2206 | case snd_soc_dapm_pga: | |
d88429a6 | 2207 | case snd_soc_dapm_out_drv: |
2b97eabc RP |
2208 | case snd_soc_dapm_input: |
2209 | case snd_soc_dapm_output: | |
1ab97c8c | 2210 | case snd_soc_dapm_siggen: |
2b97eabc RP |
2211 | case snd_soc_dapm_micbias: |
2212 | case snd_soc_dapm_vmid: | |
2213 | case snd_soc_dapm_pre: | |
2214 | case snd_soc_dapm_post: | |
246d0a17 | 2215 | case snd_soc_dapm_supply: |
62ea874a | 2216 | case snd_soc_dapm_regulator_supply: |
d7e7eb91 | 2217 | case snd_soc_dapm_clock_supply: |
010ff262 MB |
2218 | case snd_soc_dapm_aif_in: |
2219 | case snd_soc_dapm_aif_out: | |
888df395 | 2220 | case snd_soc_dapm_dai: |
c74184ed | 2221 | case snd_soc_dapm_dai_link: |
8ddab3f5 | 2222 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
2223 | list_add(&path->list_sink, &wsink->sources); |
2224 | list_add(&path->list_source, &wsource->sinks); | |
2225 | path->connect = 1; | |
2226 | return 0; | |
2227 | case snd_soc_dapm_mux: | |
24ff33ac | 2228 | case snd_soc_dapm_virt_mux: |
74155556 | 2229 | case snd_soc_dapm_value_mux: |
ce6120cc | 2230 | ret = dapm_connect_mux(dapm, wsource, wsink, path, control, |
82cfecdc | 2231 | &wsink->kcontrol_news[0]); |
2b97eabc RP |
2232 | if (ret != 0) |
2233 | goto err; | |
2234 | break; | |
2235 | case snd_soc_dapm_switch: | |
2236 | case snd_soc_dapm_mixer: | |
ca9c1aae | 2237 | case snd_soc_dapm_mixer_named_ctl: |
ce6120cc | 2238 | ret = dapm_connect_mixer(dapm, wsource, wsink, path, control); |
2b97eabc RP |
2239 | if (ret != 0) |
2240 | goto err; | |
2241 | break; | |
2242 | case snd_soc_dapm_hp: | |
2243 | case snd_soc_dapm_mic: | |
2244 | case snd_soc_dapm_line: | |
2245 | case snd_soc_dapm_spk: | |
8ddab3f5 | 2246 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
2247 | list_add(&path->list_sink, &wsink->sources); |
2248 | list_add(&path->list_source, &wsource->sinks); | |
2249 | path->connect = 0; | |
2250 | return 0; | |
2251 | } | |
2252 | return 0; | |
2253 | ||
2254 | err: | |
f7d41ae8 JN |
2255 | dev_warn(dapm->dev, "asoc: no dapm match for %s --> %s --> %s\n", |
2256 | source, control, sink); | |
2b97eabc RP |
2257 | kfree(path); |
2258 | return ret; | |
2259 | } | |
105f1c28 | 2260 | |
105f1c28 MB |
2261 | /** |
2262 | * snd_soc_dapm_add_routes - Add routes between DAPM widgets | |
ce6120cc | 2263 | * @dapm: DAPM context |
105f1c28 MB |
2264 | * @route: audio routes |
2265 | * @num: number of routes | |
2266 | * | |
2267 | * Connects 2 dapm widgets together via a named audio path. The sink is | |
2268 | * the widget receiving the audio signal, whilst the source is the sender | |
2269 | * of the audio signal. | |
2270 | * | |
2271 | * Returns 0 for success else error. On error all resources can be freed | |
2272 | * with a call to snd_soc_card_free(). | |
2273 | */ | |
ce6120cc | 2274 | int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm, |
105f1c28 MB |
2275 | const struct snd_soc_dapm_route *route, int num) |
2276 | { | |
60884c27 | 2277 | int i, ret = 0; |
105f1c28 | 2278 | |
a73fb2df | 2279 | mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT); |
105f1c28 | 2280 | for (i = 0; i < num; i++) { |
ce6120cc | 2281 | ret = snd_soc_dapm_add_route(dapm, route); |
105f1c28 | 2282 | if (ret < 0) { |
f7d41ae8 JN |
2283 | dev_err(dapm->dev, "Failed to add route %s->%s\n", |
2284 | route->source, route->sink); | |
60884c27 | 2285 | break; |
105f1c28 MB |
2286 | } |
2287 | route++; | |
2288 | } | |
a73fb2df | 2289 | mutex_unlock(&dapm->card->dapm_mutex); |
105f1c28 | 2290 | |
60884c27 | 2291 | return ret; |
105f1c28 MB |
2292 | } |
2293 | EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes); | |
2294 | ||
bf3a9e13 MB |
2295 | static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context *dapm, |
2296 | const struct snd_soc_dapm_route *route) | |
2297 | { | |
2298 | struct snd_soc_dapm_widget *source = dapm_find_widget(dapm, | |
2299 | route->source, | |
2300 | true); | |
2301 | struct snd_soc_dapm_widget *sink = dapm_find_widget(dapm, | |
2302 | route->sink, | |
2303 | true); | |
2304 | struct snd_soc_dapm_path *path; | |
2305 | int count = 0; | |
2306 | ||
2307 | if (!source) { | |
2308 | dev_err(dapm->dev, "Unable to find source %s for weak route\n", | |
2309 | route->source); | |
2310 | return -ENODEV; | |
2311 | } | |
2312 | ||
2313 | if (!sink) { | |
2314 | dev_err(dapm->dev, "Unable to find sink %s for weak route\n", | |
2315 | route->sink); | |
2316 | return -ENODEV; | |
2317 | } | |
2318 | ||
2319 | if (route->control || route->connected) | |
2320 | dev_warn(dapm->dev, "Ignoring control for weak route %s->%s\n", | |
2321 | route->source, route->sink); | |
2322 | ||
2323 | list_for_each_entry(path, &source->sinks, list_source) { | |
2324 | if (path->sink == sink) { | |
2325 | path->weak = 1; | |
2326 | count++; | |
2327 | } | |
2328 | } | |
2329 | ||
2330 | if (count == 0) | |
2331 | dev_err(dapm->dev, "No path found for weak route %s->%s\n", | |
2332 | route->source, route->sink); | |
2333 | if (count > 1) | |
2334 | dev_warn(dapm->dev, "%d paths found for weak route %s->%s\n", | |
2335 | count, route->source, route->sink); | |
2336 | ||
2337 | return 0; | |
2338 | } | |
2339 | ||
2340 | /** | |
2341 | * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak | |
2342 | * @dapm: DAPM context | |
2343 | * @route: audio routes | |
2344 | * @num: number of routes | |
2345 | * | |
2346 | * Mark existing routes matching those specified in the passed array | |
2347 | * as being weak, meaning that they are ignored for the purpose of | |
2348 | * power decisions. The main intended use case is for sidetone paths | |
2349 | * which couple audio between other independent paths if they are both | |
2350 | * active in order to make the combination work better at the user | |
2351 | * level but which aren't intended to be "used". | |
2352 | * | |
2353 | * Note that CODEC drivers should not use this as sidetone type paths | |
2354 | * can frequently also be used as bypass paths. | |
2355 | */ | |
2356 | int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context *dapm, | |
2357 | const struct snd_soc_dapm_route *route, int num) | |
2358 | { | |
2359 | int i, err; | |
2360 | int ret = 0; | |
2361 | ||
a73fb2df | 2362 | mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT); |
bf3a9e13 MB |
2363 | for (i = 0; i < num; i++) { |
2364 | err = snd_soc_dapm_weak_route(dapm, route); | |
2365 | if (err) | |
2366 | ret = err; | |
2367 | route++; | |
2368 | } | |
a73fb2df | 2369 | mutex_unlock(&dapm->card->dapm_mutex); |
bf3a9e13 MB |
2370 | |
2371 | return ret; | |
2372 | } | |
2373 | EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes); | |
2374 | ||
2b97eabc RP |
2375 | /** |
2376 | * snd_soc_dapm_new_widgets - add new dapm widgets | |
ce6120cc | 2377 | * @dapm: DAPM context |
2b97eabc RP |
2378 | * |
2379 | * Checks the codec for any new dapm widgets and creates them if found. | |
2380 | * | |
2381 | * Returns 0 for success. | |
2382 | */ | |
ce6120cc | 2383 | int snd_soc_dapm_new_widgets(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
2384 | { |
2385 | struct snd_soc_dapm_widget *w; | |
b66a70d5 | 2386 | unsigned int val; |
2b97eabc | 2387 | |
a73fb2df LG |
2388 | mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT); |
2389 | ||
97c866de | 2390 | list_for_each_entry(w, &dapm->card->widgets, list) |
2b97eabc RP |
2391 | { |
2392 | if (w->new) | |
2393 | continue; | |
2394 | ||
fad59888 SW |
2395 | if (w->num_kcontrols) { |
2396 | w->kcontrols = kzalloc(w->num_kcontrols * | |
2397 | sizeof(struct snd_kcontrol *), | |
2398 | GFP_KERNEL); | |
a73fb2df LG |
2399 | if (!w->kcontrols) { |
2400 | mutex_unlock(&dapm->card->dapm_mutex); | |
fad59888 | 2401 | return -ENOMEM; |
a73fb2df | 2402 | } |
fad59888 SW |
2403 | } |
2404 | ||
2b97eabc RP |
2405 | switch(w->id) { |
2406 | case snd_soc_dapm_switch: | |
2407 | case snd_soc_dapm_mixer: | |
ca9c1aae | 2408 | case snd_soc_dapm_mixer_named_ctl: |
4b80b8c2 | 2409 | dapm_new_mixer(w); |
2b97eabc RP |
2410 | break; |
2411 | case snd_soc_dapm_mux: | |
24ff33ac | 2412 | case snd_soc_dapm_virt_mux: |
2e72f8e3 | 2413 | case snd_soc_dapm_value_mux: |
4b80b8c2 | 2414 | dapm_new_mux(w); |
2b97eabc | 2415 | break; |
2b97eabc | 2416 | case snd_soc_dapm_pga: |
d88429a6 | 2417 | case snd_soc_dapm_out_drv: |
4b80b8c2 | 2418 | dapm_new_pga(w); |
2b97eabc | 2419 | break; |
7ca3a18b | 2420 | default: |
2b97eabc RP |
2421 | break; |
2422 | } | |
b66a70d5 MB |
2423 | |
2424 | /* Read the initial power state from the device */ | |
2425 | if (w->reg >= 0) { | |
0445bdf4 | 2426 | val = soc_widget_read(w, w->reg); |
b66a70d5 MB |
2427 | val &= 1 << w->shift; |
2428 | if (w->invert) | |
2429 | val = !val; | |
2430 | ||
2431 | if (val) | |
2432 | w->power = 1; | |
2433 | } | |
2434 | ||
2b97eabc | 2435 | w->new = 1; |
d5d1e0be | 2436 | |
7508b12a | 2437 | dapm_mark_dirty(w, "new widget"); |
d5d1e0be | 2438 | dapm_debugfs_add_widget(w); |
2b97eabc RP |
2439 | } |
2440 | ||
ce6120cc | 2441 | dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP); |
a73fb2df | 2442 | mutex_unlock(&dapm->card->dapm_mutex); |
2b97eabc RP |
2443 | return 0; |
2444 | } | |
2445 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets); | |
2446 | ||
2447 | /** | |
2448 | * snd_soc_dapm_get_volsw - dapm mixer get callback | |
2449 | * @kcontrol: mixer control | |
ac11a2b3 | 2450 | * @ucontrol: control element information |
2b97eabc RP |
2451 | * |
2452 | * Callback to get the value of a dapm mixer control. | |
2453 | * | |
2454 | * Returns 0 for success. | |
2455 | */ | |
2456 | int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol, | |
2457 | struct snd_ctl_elem_value *ucontrol) | |
2458 | { | |
fafd2176 SW |
2459 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2460 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
4eaa9819 JS |
2461 | struct soc_mixer_control *mc = |
2462 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
2463 | unsigned int reg = mc->reg; |
2464 | unsigned int shift = mc->shift; | |
2465 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 2466 | int max = mc->max; |
815ecf8d JS |
2467 | unsigned int invert = mc->invert; |
2468 | unsigned int mask = (1 << fls(max)) - 1; | |
2b97eabc | 2469 | |
2b97eabc RP |
2470 | ucontrol->value.integer.value[0] = |
2471 | (snd_soc_read(widget->codec, reg) >> shift) & mask; | |
2472 | if (shift != rshift) | |
2473 | ucontrol->value.integer.value[1] = | |
2474 | (snd_soc_read(widget->codec, reg) >> rshift) & mask; | |
2475 | if (invert) { | |
2476 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 2477 | max - ucontrol->value.integer.value[0]; |
2b97eabc RP |
2478 | if (shift != rshift) |
2479 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 2480 | max - ucontrol->value.integer.value[1]; |
2b97eabc RP |
2481 | } |
2482 | ||
2483 | return 0; | |
2484 | } | |
2485 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw); | |
2486 | ||
2487 | /** | |
2488 | * snd_soc_dapm_put_volsw - dapm mixer set callback | |
2489 | * @kcontrol: mixer control | |
ac11a2b3 | 2490 | * @ucontrol: control element information |
2b97eabc RP |
2491 | * |
2492 | * Callback to set the value of a dapm mixer control. | |
2493 | * | |
2494 | * Returns 0 for success. | |
2495 | */ | |
2496 | int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, | |
2497 | struct snd_ctl_elem_value *ucontrol) | |
2498 | { | |
fafd2176 SW |
2499 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2500 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2501 | struct snd_soc_codec *codec = widget->codec; | |
a73fb2df | 2502 | struct snd_soc_card *card = codec->card; |
4eaa9819 JS |
2503 | struct soc_mixer_control *mc = |
2504 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
2505 | unsigned int reg = mc->reg; |
2506 | unsigned int shift = mc->shift; | |
4eaa9819 | 2507 | int max = mc->max; |
815ecf8d JS |
2508 | unsigned int mask = (1 << fls(max)) - 1; |
2509 | unsigned int invert = mc->invert; | |
e9cf7049 | 2510 | unsigned int val; |
97404f2e MB |
2511 | int connect, change; |
2512 | struct snd_soc_dapm_update update; | |
fafd2176 | 2513 | int wi; |
2b97eabc RP |
2514 | |
2515 | val = (ucontrol->value.integer.value[0] & mask); | |
2516 | ||
2517 | if (invert) | |
a7a4ac86 | 2518 | val = max - val; |
e9cf7049 | 2519 | mask = mask << shift; |
2b97eabc | 2520 | val = val << shift; |
2b97eabc | 2521 | |
fafd2176 SW |
2522 | if (val) |
2523 | /* new connection */ | |
2524 | connect = invert ? 0 : 1; | |
2525 | else | |
2526 | /* old connection must be powered down */ | |
2527 | connect = invert ? 1 : 0; | |
2528 | ||
3cd04343 | 2529 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
2b97eabc | 2530 | |
e9cf7049 | 2531 | change = snd_soc_test_bits(widget->codec, reg, mask, val); |
97404f2e | 2532 | if (change) { |
fafd2176 SW |
2533 | for (wi = 0; wi < wlist->num_widgets; wi++) { |
2534 | widget = wlist->widgets[wi]; | |
283375ce | 2535 | |
fafd2176 | 2536 | widget->value = val; |
97404f2e | 2537 | |
fafd2176 SW |
2538 | update.kcontrol = kcontrol; |
2539 | update.widget = widget; | |
2540 | update.reg = reg; | |
2541 | update.mask = mask; | |
2542 | update.val = val; | |
2543 | widget->dapm->update = &update; | |
97404f2e | 2544 | |
4edbb345 | 2545 | soc_dapm_mixer_update_power(widget, kcontrol, connect); |
fafd2176 SW |
2546 | |
2547 | widget->dapm->update = NULL; | |
2548 | } | |
283375ce MB |
2549 | } |
2550 | ||
a73fb2df | 2551 | mutex_unlock(&card->dapm_mutex); |
97404f2e | 2552 | return 0; |
2b97eabc RP |
2553 | } |
2554 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw); | |
2555 | ||
2556 | /** | |
2557 | * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback | |
2558 | * @kcontrol: mixer control | |
ac11a2b3 | 2559 | * @ucontrol: control element information |
2b97eabc RP |
2560 | * |
2561 | * Callback to get the value of a dapm enumerated double mixer control. | |
2562 | * | |
2563 | * Returns 0 for success. | |
2564 | */ | |
2565 | int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol, | |
2566 | struct snd_ctl_elem_value *ucontrol) | |
2567 | { | |
fafd2176 SW |
2568 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2569 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2b97eabc | 2570 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f | 2571 | unsigned int val, bitmask; |
2b97eabc | 2572 | |
f8ba0b7b | 2573 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
2574 | ; |
2575 | val = snd_soc_read(widget->codec, e->reg); | |
2576 | ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1); | |
2577 | if (e->shift_l != e->shift_r) | |
2578 | ucontrol->value.enumerated.item[1] = | |
2579 | (val >> e->shift_r) & (bitmask - 1); | |
2580 | ||
2581 | return 0; | |
2582 | } | |
2583 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double); | |
2584 | ||
2585 | /** | |
2586 | * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback | |
2587 | * @kcontrol: mixer control | |
ac11a2b3 | 2588 | * @ucontrol: control element information |
2b97eabc RP |
2589 | * |
2590 | * Callback to set the value of a dapm enumerated double mixer control. | |
2591 | * | |
2592 | * Returns 0 for success. | |
2593 | */ | |
2594 | int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, | |
2595 | struct snd_ctl_elem_value *ucontrol) | |
2596 | { | |
fafd2176 SW |
2597 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2598 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2599 | struct snd_soc_codec *codec = widget->codec; | |
a73fb2df | 2600 | struct snd_soc_card *card = codec->card; |
2b97eabc | 2601 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
3a65577d | 2602 | unsigned int val, mux, change; |
46f5822f | 2603 | unsigned int mask, bitmask; |
97404f2e | 2604 | struct snd_soc_dapm_update update; |
fafd2176 | 2605 | int wi; |
2b97eabc | 2606 | |
f8ba0b7b | 2607 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc | 2608 | ; |
f8ba0b7b | 2609 | if (ucontrol->value.enumerated.item[0] > e->max - 1) |
2b97eabc RP |
2610 | return -EINVAL; |
2611 | mux = ucontrol->value.enumerated.item[0]; | |
2612 | val = mux << e->shift_l; | |
2613 | mask = (bitmask - 1) << e->shift_l; | |
2614 | if (e->shift_l != e->shift_r) { | |
f8ba0b7b | 2615 | if (ucontrol->value.enumerated.item[1] > e->max - 1) |
2b97eabc RP |
2616 | return -EINVAL; |
2617 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
2618 | mask |= (bitmask - 1) << e->shift_r; | |
2619 | } | |
2620 | ||
3cd04343 | 2621 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
fafd2176 | 2622 | |
3a65577d | 2623 | change = snd_soc_test_bits(widget->codec, e->reg, mask, val); |
fafd2176 SW |
2624 | if (change) { |
2625 | for (wi = 0; wi < wlist->num_widgets; wi++) { | |
2626 | widget = wlist->widgets[wi]; | |
2627 | ||
2628 | widget->value = val; | |
1642e3d4 | 2629 | |
fafd2176 SW |
2630 | update.kcontrol = kcontrol; |
2631 | update.widget = widget; | |
2632 | update.reg = e->reg; | |
2633 | update.mask = mask; | |
2634 | update.val = val; | |
2635 | widget->dapm->update = &update; | |
1642e3d4 | 2636 | |
4edbb345 | 2637 | soc_dapm_mux_update_power(widget, kcontrol, mux, e); |
1642e3d4 | 2638 | |
fafd2176 SW |
2639 | widget->dapm->update = NULL; |
2640 | } | |
2641 | } | |
2b97eabc | 2642 | |
a73fb2df | 2643 | mutex_unlock(&card->dapm_mutex); |
97404f2e | 2644 | return change; |
2b97eabc RP |
2645 | } |
2646 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double); | |
2647 | ||
d2b247a8 MB |
2648 | /** |
2649 | * snd_soc_dapm_get_enum_virt - Get virtual DAPM mux | |
2650 | * @kcontrol: mixer control | |
2651 | * @ucontrol: control element information | |
2652 | * | |
2653 | * Returns 0 for success. | |
2654 | */ | |
2655 | int snd_soc_dapm_get_enum_virt(struct snd_kcontrol *kcontrol, | |
2656 | struct snd_ctl_elem_value *ucontrol) | |
2657 | { | |
fafd2176 SW |
2658 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2659 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
d2b247a8 MB |
2660 | |
2661 | ucontrol->value.enumerated.item[0] = widget->value; | |
2662 | ||
2663 | return 0; | |
2664 | } | |
2665 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_virt); | |
2666 | ||
2667 | /** | |
2668 | * snd_soc_dapm_put_enum_virt - Set virtual DAPM mux | |
2669 | * @kcontrol: mixer control | |
2670 | * @ucontrol: control element information | |
2671 | * | |
2672 | * Returns 0 for success. | |
2673 | */ | |
2674 | int snd_soc_dapm_put_enum_virt(struct snd_kcontrol *kcontrol, | |
2675 | struct snd_ctl_elem_value *ucontrol) | |
2676 | { | |
fafd2176 SW |
2677 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2678 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2679 | struct snd_soc_codec *codec = widget->codec; | |
a73fb2df | 2680 | struct snd_soc_card *card = codec->card; |
d2b247a8 MB |
2681 | struct soc_enum *e = |
2682 | (struct soc_enum *)kcontrol->private_value; | |
2683 | int change; | |
2684 | int ret = 0; | |
fafd2176 | 2685 | int wi; |
d2b247a8 MB |
2686 | |
2687 | if (ucontrol->value.enumerated.item[0] >= e->max) | |
2688 | return -EINVAL; | |
2689 | ||
3cd04343 | 2690 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
d2b247a8 MB |
2691 | |
2692 | change = widget->value != ucontrol->value.enumerated.item[0]; | |
fafd2176 SW |
2693 | if (change) { |
2694 | for (wi = 0; wi < wlist->num_widgets; wi++) { | |
2695 | widget = wlist->widgets[wi]; | |
2696 | ||
2697 | widget->value = ucontrol->value.enumerated.item[0]; | |
2698 | ||
4edbb345 | 2699 | soc_dapm_mux_update_power(widget, kcontrol, widget->value, e); |
fafd2176 SW |
2700 | } |
2701 | } | |
d2b247a8 | 2702 | |
a73fb2df | 2703 | mutex_unlock(&card->dapm_mutex); |
d2b247a8 MB |
2704 | return ret; |
2705 | } | |
2706 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt); | |
2707 | ||
2e72f8e3 PU |
2708 | /** |
2709 | * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get | |
2710 | * callback | |
2711 | * @kcontrol: mixer control | |
2712 | * @ucontrol: control element information | |
2713 | * | |
2714 | * Callback to get the value of a dapm semi enumerated double mixer control. | |
2715 | * | |
2716 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
2717 | * used for handling bitfield coded enumeration for example. | |
2718 | * | |
2719 | * Returns 0 for success. | |
2720 | */ | |
2721 | int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol *kcontrol, | |
2722 | struct snd_ctl_elem_value *ucontrol) | |
2723 | { | |
fafd2176 SW |
2724 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2725 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
74155556 | 2726 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f | 2727 | unsigned int reg_val, val, mux; |
2e72f8e3 PU |
2728 | |
2729 | reg_val = snd_soc_read(widget->codec, e->reg); | |
2730 | val = (reg_val >> e->shift_l) & e->mask; | |
2731 | for (mux = 0; mux < e->max; mux++) { | |
2732 | if (val == e->values[mux]) | |
2733 | break; | |
2734 | } | |
2735 | ucontrol->value.enumerated.item[0] = mux; | |
2736 | if (e->shift_l != e->shift_r) { | |
2737 | val = (reg_val >> e->shift_r) & e->mask; | |
2738 | for (mux = 0; mux < e->max; mux++) { | |
2739 | if (val == e->values[mux]) | |
2740 | break; | |
2741 | } | |
2742 | ucontrol->value.enumerated.item[1] = mux; | |
2743 | } | |
2744 | ||
2745 | return 0; | |
2746 | } | |
2747 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double); | |
2748 | ||
2749 | /** | |
2750 | * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set | |
2751 | * callback | |
2752 | * @kcontrol: mixer control | |
2753 | * @ucontrol: control element information | |
2754 | * | |
2755 | * Callback to set the value of a dapm semi enumerated double mixer control. | |
2756 | * | |
2757 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
2758 | * used for handling bitfield coded enumeration for example. | |
2759 | * | |
2760 | * Returns 0 for success. | |
2761 | */ | |
2762 | int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol, | |
2763 | struct snd_ctl_elem_value *ucontrol) | |
2764 | { | |
fafd2176 SW |
2765 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2766 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2767 | struct snd_soc_codec *codec = widget->codec; | |
a73fb2df | 2768 | struct snd_soc_card *card = codec->card; |
74155556 | 2769 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
3a65577d | 2770 | unsigned int val, mux, change; |
46f5822f | 2771 | unsigned int mask; |
97404f2e | 2772 | struct snd_soc_dapm_update update; |
fafd2176 | 2773 | int wi; |
2e72f8e3 PU |
2774 | |
2775 | if (ucontrol->value.enumerated.item[0] > e->max - 1) | |
2776 | return -EINVAL; | |
2777 | mux = ucontrol->value.enumerated.item[0]; | |
2778 | val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l; | |
2779 | mask = e->mask << e->shift_l; | |
2780 | if (e->shift_l != e->shift_r) { | |
2781 | if (ucontrol->value.enumerated.item[1] > e->max - 1) | |
2782 | return -EINVAL; | |
2783 | val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r; | |
2784 | mask |= e->mask << e->shift_r; | |
2785 | } | |
2786 | ||
3cd04343 | 2787 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
fafd2176 | 2788 | |
3a65577d | 2789 | change = snd_soc_test_bits(widget->codec, e->reg, mask, val); |
fafd2176 SW |
2790 | if (change) { |
2791 | for (wi = 0; wi < wlist->num_widgets; wi++) { | |
2792 | widget = wlist->widgets[wi]; | |
1642e3d4 | 2793 | |
fafd2176 | 2794 | widget->value = val; |
1642e3d4 | 2795 | |
fafd2176 SW |
2796 | update.kcontrol = kcontrol; |
2797 | update.widget = widget; | |
2798 | update.reg = e->reg; | |
2799 | update.mask = mask; | |
2800 | update.val = val; | |
2801 | widget->dapm->update = &update; | |
1642e3d4 | 2802 | |
4edbb345 | 2803 | soc_dapm_mux_update_power(widget, kcontrol, mux, e); |
fafd2176 SW |
2804 | |
2805 | widget->dapm->update = NULL; | |
2806 | } | |
2807 | } | |
2e72f8e3 | 2808 | |
a73fb2df | 2809 | mutex_unlock(&card->dapm_mutex); |
97404f2e | 2810 | return change; |
2e72f8e3 PU |
2811 | } |
2812 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double); | |
2813 | ||
8b37dbd2 MB |
2814 | /** |
2815 | * snd_soc_dapm_info_pin_switch - Info for a pin switch | |
2816 | * | |
2817 | * @kcontrol: mixer control | |
2818 | * @uinfo: control element information | |
2819 | * | |
2820 | * Callback to provide information about a pin switch control. | |
2821 | */ | |
2822 | int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol, | |
2823 | struct snd_ctl_elem_info *uinfo) | |
2824 | { | |
2825 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
2826 | uinfo->count = 1; | |
2827 | uinfo->value.integer.min = 0; | |
2828 | uinfo->value.integer.max = 1; | |
2829 | ||
2830 | return 0; | |
2831 | } | |
2832 | EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch); | |
2833 | ||
2834 | /** | |
2835 | * snd_soc_dapm_get_pin_switch - Get information for a pin switch | |
2836 | * | |
2837 | * @kcontrol: mixer control | |
2838 | * @ucontrol: Value | |
2839 | */ | |
2840 | int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol, | |
2841 | struct snd_ctl_elem_value *ucontrol) | |
2842 | { | |
48a8c394 | 2843 | struct snd_soc_card *card = snd_kcontrol_chip(kcontrol); |
8b37dbd2 MB |
2844 | const char *pin = (const char *)kcontrol->private_value; |
2845 | ||
3cd04343 | 2846 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
8b37dbd2 MB |
2847 | |
2848 | ucontrol->value.integer.value[0] = | |
48a8c394 | 2849 | snd_soc_dapm_get_pin_status(&card->dapm, pin); |
8b37dbd2 | 2850 | |
a73fb2df | 2851 | mutex_unlock(&card->dapm_mutex); |
8b37dbd2 MB |
2852 | |
2853 | return 0; | |
2854 | } | |
2855 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch); | |
2856 | ||
2857 | /** | |
2858 | * snd_soc_dapm_put_pin_switch - Set information for a pin switch | |
2859 | * | |
2860 | * @kcontrol: mixer control | |
2861 | * @ucontrol: Value | |
2862 | */ | |
2863 | int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol, | |
2864 | struct snd_ctl_elem_value *ucontrol) | |
2865 | { | |
48a8c394 | 2866 | struct snd_soc_card *card = snd_kcontrol_chip(kcontrol); |
8b37dbd2 MB |
2867 | const char *pin = (const char *)kcontrol->private_value; |
2868 | ||
3cd04343 | 2869 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
8b37dbd2 MB |
2870 | |
2871 | if (ucontrol->value.integer.value[0]) | |
48a8c394 | 2872 | snd_soc_dapm_enable_pin(&card->dapm, pin); |
8b37dbd2 | 2873 | else |
48a8c394 | 2874 | snd_soc_dapm_disable_pin(&card->dapm, pin); |
8b37dbd2 | 2875 | |
a73fb2df | 2876 | mutex_unlock(&card->dapm_mutex); |
8b37dbd2 | 2877 | |
a73fb2df | 2878 | snd_soc_dapm_sync(&card->dapm); |
8b37dbd2 MB |
2879 | return 0; |
2880 | } | |
2881 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch); | |
2882 | ||
5ba06fc9 MB |
2883 | static struct snd_soc_dapm_widget * |
2884 | snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm, | |
2885 | const struct snd_soc_dapm_widget *widget) | |
2b97eabc RP |
2886 | { |
2887 | struct snd_soc_dapm_widget *w; | |
ead9b919 | 2888 | size_t name_len; |
62ea874a | 2889 | int ret; |
2b97eabc RP |
2890 | |
2891 | if ((w = dapm_cnew_widget(widget)) == NULL) | |
5ba06fc9 | 2892 | return NULL; |
2b97eabc | 2893 | |
62ea874a MB |
2894 | switch (w->id) { |
2895 | case snd_soc_dapm_regulator_supply: | |
a3cc056b LG |
2896 | w->regulator = devm_regulator_get(dapm->dev, w->name); |
2897 | if (IS_ERR(w->regulator)) { | |
2898 | ret = PTR_ERR(w->regulator); | |
62ea874a MB |
2899 | dev_err(dapm->dev, "Failed to request %s: %d\n", |
2900 | w->name, ret); | |
5ba06fc9 | 2901 | return NULL; |
62ea874a MB |
2902 | } |
2903 | break; | |
d7e7eb91 OL |
2904 | case snd_soc_dapm_clock_supply: |
2905 | w->clk = clk_get(dapm->dev, w->name); | |
2906 | if (IS_ERR(w->clk)) { | |
2907 | ret = PTR_ERR(w->clk); | |
2908 | dev_err(dapm->dev, "Failed to request %s: %d\n", | |
2909 | w->name, ret); | |
2910 | return NULL; | |
2911 | } | |
2912 | break; | |
62ea874a MB |
2913 | default: |
2914 | break; | |
2915 | } | |
2b97eabc | 2916 | |
ead9b919 | 2917 | name_len = strlen(widget->name) + 1; |
88e8b9a8 | 2918 | if (dapm->codec && dapm->codec->name_prefix) |
ead9b919 JN |
2919 | name_len += 1 + strlen(dapm->codec->name_prefix); |
2920 | w->name = kmalloc(name_len, GFP_KERNEL); | |
2921 | if (w->name == NULL) { | |
2922 | kfree(w); | |
5ba06fc9 | 2923 | return NULL; |
ead9b919 | 2924 | } |
88e8b9a8 | 2925 | if (dapm->codec && dapm->codec->name_prefix) |
888df395 | 2926 | snprintf((char *)w->name, name_len, "%s %s", |
ead9b919 JN |
2927 | dapm->codec->name_prefix, widget->name); |
2928 | else | |
888df395 | 2929 | snprintf((char *)w->name, name_len, "%s", widget->name); |
ead9b919 | 2930 | |
7ca3a18b MB |
2931 | switch (w->id) { |
2932 | case snd_soc_dapm_switch: | |
2933 | case snd_soc_dapm_mixer: | |
2934 | case snd_soc_dapm_mixer_named_ctl: | |
2935 | w->power_check = dapm_generic_check_power; | |
2936 | break; | |
2937 | case snd_soc_dapm_mux: | |
2938 | case snd_soc_dapm_virt_mux: | |
2939 | case snd_soc_dapm_value_mux: | |
2940 | w->power_check = dapm_generic_check_power; | |
2941 | break; | |
2942 | case snd_soc_dapm_adc: | |
2943 | case snd_soc_dapm_aif_out: | |
2944 | w->power_check = dapm_adc_check_power; | |
2945 | break; | |
2946 | case snd_soc_dapm_dac: | |
2947 | case snd_soc_dapm_aif_in: | |
2948 | w->power_check = dapm_dac_check_power; | |
2949 | break; | |
2950 | case snd_soc_dapm_pga: | |
2951 | case snd_soc_dapm_out_drv: | |
2952 | case snd_soc_dapm_input: | |
2953 | case snd_soc_dapm_output: | |
2954 | case snd_soc_dapm_micbias: | |
2955 | case snd_soc_dapm_spk: | |
2956 | case snd_soc_dapm_hp: | |
2957 | case snd_soc_dapm_mic: | |
2958 | case snd_soc_dapm_line: | |
c74184ed | 2959 | case snd_soc_dapm_dai_link: |
7ca3a18b MB |
2960 | w->power_check = dapm_generic_check_power; |
2961 | break; | |
2962 | case snd_soc_dapm_supply: | |
62ea874a | 2963 | case snd_soc_dapm_regulator_supply: |
d7e7eb91 | 2964 | case snd_soc_dapm_clock_supply: |
7ca3a18b MB |
2965 | w->power_check = dapm_supply_check_power; |
2966 | break; | |
888df395 MB |
2967 | case snd_soc_dapm_dai: |
2968 | w->power_check = dapm_dai_check_power; | |
2969 | break; | |
7ca3a18b MB |
2970 | default: |
2971 | w->power_check = dapm_always_on_check_power; | |
2972 | break; | |
2973 | } | |
2974 | ||
97c866de | 2975 | dapm->n_widgets++; |
ce6120cc LG |
2976 | w->dapm = dapm; |
2977 | w->codec = dapm->codec; | |
b7950641 | 2978 | w->platform = dapm->platform; |
2b97eabc RP |
2979 | INIT_LIST_HEAD(&w->sources); |
2980 | INIT_LIST_HEAD(&w->sinks); | |
2981 | INIT_LIST_HEAD(&w->list); | |
db432b41 | 2982 | INIT_LIST_HEAD(&w->dirty); |
97c866de | 2983 | list_add(&w->list, &dapm->card->widgets); |
2b97eabc RP |
2984 | |
2985 | /* machine layer set ups unconnected pins and insertions */ | |
2986 | w->connected = 1; | |
5ba06fc9 | 2987 | return w; |
2b97eabc | 2988 | } |
2b97eabc | 2989 | |
4ba1327a MB |
2990 | /** |
2991 | * snd_soc_dapm_new_controls - create new dapm controls | |
ce6120cc | 2992 | * @dapm: DAPM context |
4ba1327a MB |
2993 | * @widget: widget array |
2994 | * @num: number of widgets | |
2995 | * | |
2996 | * Creates new DAPM controls based upon the templates. | |
2997 | * | |
2998 | * Returns 0 for success else error. | |
2999 | */ | |
ce6120cc | 3000 | int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm, |
4ba1327a MB |
3001 | const struct snd_soc_dapm_widget *widget, |
3002 | int num) | |
3003 | { | |
5ba06fc9 MB |
3004 | struct snd_soc_dapm_widget *w; |
3005 | int i; | |
60884c27 | 3006 | int ret = 0; |
4ba1327a | 3007 | |
a73fb2df | 3008 | mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT); |
4ba1327a | 3009 | for (i = 0; i < num; i++) { |
5ba06fc9 MB |
3010 | w = snd_soc_dapm_new_control(dapm, widget); |
3011 | if (!w) { | |
f7d41ae8 | 3012 | dev_err(dapm->dev, |
5ba06fc9 MB |
3013 | "ASoC: Failed to create DAPM control %s\n", |
3014 | widget->name); | |
60884c27 DC |
3015 | ret = -ENOMEM; |
3016 | break; | |
b8b33cb5 | 3017 | } |
4ba1327a MB |
3018 | widget++; |
3019 | } | |
a73fb2df | 3020 | mutex_unlock(&dapm->card->dapm_mutex); |
60884c27 | 3021 | return ret; |
4ba1327a MB |
3022 | } |
3023 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls); | |
3024 | ||
c74184ed MB |
3025 | static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w, |
3026 | struct snd_kcontrol *kcontrol, int event) | |
3027 | { | |
3028 | struct snd_soc_dapm_path *source_p, *sink_p; | |
3029 | struct snd_soc_dai *source, *sink; | |
3030 | const struct snd_soc_pcm_stream *config = w->params; | |
3031 | struct snd_pcm_substream substream; | |
9747cec2 | 3032 | struct snd_pcm_hw_params *params = NULL; |
c74184ed MB |
3033 | u64 fmt; |
3034 | int ret; | |
3035 | ||
3036 | BUG_ON(!config); | |
3037 | BUG_ON(list_empty(&w->sources) || list_empty(&w->sinks)); | |
3038 | ||
3039 | /* We only support a single source and sink, pick the first */ | |
3040 | source_p = list_first_entry(&w->sources, struct snd_soc_dapm_path, | |
3041 | list_sink); | |
3042 | sink_p = list_first_entry(&w->sinks, struct snd_soc_dapm_path, | |
3043 | list_source); | |
3044 | ||
3045 | BUG_ON(!source_p || !sink_p); | |
3046 | BUG_ON(!sink_p->source || !source_p->sink); | |
3047 | BUG_ON(!source_p->source || !sink_p->sink); | |
3048 | ||
3049 | source = source_p->source->priv; | |
3050 | sink = sink_p->sink->priv; | |
3051 | ||
3052 | /* Be a little careful as we don't want to overflow the mask array */ | |
3053 | if (config->formats) { | |
3054 | fmt = ffs(config->formats) - 1; | |
3055 | } else { | |
516541a0 | 3056 | dev_warn(w->dapm->dev, "Invalid format %llx specified\n", |
c74184ed MB |
3057 | config->formats); |
3058 | fmt = 0; | |
3059 | } | |
3060 | ||
3061 | /* Currently very limited parameter selection */ | |
9747cec2 MB |
3062 | params = kzalloc(sizeof(*params), GFP_KERNEL); |
3063 | if (!params) { | |
3064 | ret = -ENOMEM; | |
3065 | goto out; | |
3066 | } | |
3067 | snd_mask_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), fmt); | |
c74184ed | 3068 | |
9747cec2 | 3069 | hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->min = |
c74184ed | 3070 | config->rate_min; |
9747cec2 | 3071 | hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->max = |
c74184ed MB |
3072 | config->rate_max; |
3073 | ||
9747cec2 | 3074 | hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->min |
c74184ed | 3075 | = config->channels_min; |
9747cec2 | 3076 | hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max |
c74184ed MB |
3077 | = config->channels_max; |
3078 | ||
3079 | memset(&substream, 0, sizeof(substream)); | |
3080 | ||
3081 | switch (event) { | |
3082 | case SND_SOC_DAPM_PRE_PMU: | |
3083 | if (source->driver->ops && source->driver->ops->hw_params) { | |
3084 | substream.stream = SNDRV_PCM_STREAM_CAPTURE; | |
3085 | ret = source->driver->ops->hw_params(&substream, | |
9747cec2 | 3086 | params, source); |
c74184ed MB |
3087 | if (ret != 0) { |
3088 | dev_err(source->dev, | |
3089 | "hw_params() failed: %d\n", ret); | |
9747cec2 | 3090 | goto out; |
c74184ed MB |
3091 | } |
3092 | } | |
3093 | ||
3094 | if (sink->driver->ops && sink->driver->ops->hw_params) { | |
3095 | substream.stream = SNDRV_PCM_STREAM_PLAYBACK; | |
9747cec2 | 3096 | ret = sink->driver->ops->hw_params(&substream, params, |
c74184ed MB |
3097 | sink); |
3098 | if (ret != 0) { | |
3099 | dev_err(sink->dev, | |
3100 | "hw_params() failed: %d\n", ret); | |
9747cec2 | 3101 | goto out; |
c74184ed MB |
3102 | } |
3103 | } | |
3104 | break; | |
3105 | ||
3106 | case SND_SOC_DAPM_POST_PMU: | |
3107 | ret = snd_soc_dai_digital_mute(sink, 0); | |
3108 | if (ret != 0 && ret != -ENOTSUPP) | |
3109 | dev_warn(sink->dev, "Failed to unmute: %d\n", ret); | |
9747cec2 | 3110 | ret = 0; |
c74184ed MB |
3111 | break; |
3112 | ||
3113 | case SND_SOC_DAPM_PRE_PMD: | |
3114 | ret = snd_soc_dai_digital_mute(sink, 1); | |
3115 | if (ret != 0 && ret != -ENOTSUPP) | |
3116 | dev_warn(sink->dev, "Failed to mute: %d\n", ret); | |
9747cec2 | 3117 | ret = 0; |
c74184ed MB |
3118 | break; |
3119 | ||
3120 | default: | |
3121 | BUG(); | |
3122 | return -EINVAL; | |
3123 | } | |
3124 | ||
9747cec2 MB |
3125 | out: |
3126 | kfree(params); | |
3127 | return ret; | |
c74184ed MB |
3128 | } |
3129 | ||
3130 | int snd_soc_dapm_new_pcm(struct snd_soc_card *card, | |
3131 | const struct snd_soc_pcm_stream *params, | |
3132 | struct snd_soc_dapm_widget *source, | |
3133 | struct snd_soc_dapm_widget *sink) | |
3134 | { | |
3135 | struct snd_soc_dapm_route routes[2]; | |
3136 | struct snd_soc_dapm_widget template; | |
3137 | struct snd_soc_dapm_widget *w; | |
3138 | size_t len; | |
3139 | char *link_name; | |
3140 | ||
3141 | len = strlen(source->name) + strlen(sink->name) + 2; | |
3142 | link_name = devm_kzalloc(card->dev, len, GFP_KERNEL); | |
3143 | if (!link_name) | |
3144 | return -ENOMEM; | |
3145 | snprintf(link_name, len, "%s-%s", source->name, sink->name); | |
3146 | ||
3147 | memset(&template, 0, sizeof(template)); | |
3148 | template.reg = SND_SOC_NOPM; | |
3149 | template.id = snd_soc_dapm_dai_link; | |
3150 | template.name = link_name; | |
3151 | template.event = snd_soc_dai_link_event; | |
3152 | template.event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU | | |
3153 | SND_SOC_DAPM_PRE_PMD; | |
3154 | ||
3155 | dev_dbg(card->dev, "adding %s widget\n", link_name); | |
3156 | ||
3157 | w = snd_soc_dapm_new_control(&card->dapm, &template); | |
3158 | if (!w) { | |
3159 | dev_err(card->dev, "Failed to create %s widget\n", | |
3160 | link_name); | |
3161 | return -ENOMEM; | |
3162 | } | |
3163 | ||
3164 | w->params = params; | |
3165 | ||
3166 | memset(&routes, 0, sizeof(routes)); | |
3167 | ||
3168 | routes[0].source = source->name; | |
3169 | routes[0].sink = link_name; | |
3170 | routes[1].source = link_name; | |
3171 | routes[1].sink = sink->name; | |
3172 | ||
3173 | return snd_soc_dapm_add_routes(&card->dapm, routes, | |
3174 | ARRAY_SIZE(routes)); | |
3175 | } | |
3176 | ||
888df395 MB |
3177 | int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context *dapm, |
3178 | struct snd_soc_dai *dai) | |
2b97eabc | 3179 | { |
888df395 | 3180 | struct snd_soc_dapm_widget template; |
2b97eabc RP |
3181 | struct snd_soc_dapm_widget *w; |
3182 | ||
888df395 MB |
3183 | WARN_ON(dapm->dev != dai->dev); |
3184 | ||
3185 | memset(&template, 0, sizeof(template)); | |
3186 | template.reg = SND_SOC_NOPM; | |
3187 | ||
3188 | if (dai->driver->playback.stream_name) { | |
3189 | template.id = snd_soc_dapm_dai; | |
3190 | template.name = dai->driver->playback.stream_name; | |
3191 | template.sname = dai->driver->playback.stream_name; | |
3192 | ||
3193 | dev_dbg(dai->dev, "adding %s widget\n", | |
3194 | template.name); | |
3195 | ||
3196 | w = snd_soc_dapm_new_control(dapm, &template); | |
3197 | if (!w) { | |
3198 | dev_err(dapm->dev, "Failed to create %s widget\n", | |
3199 | dai->driver->playback.stream_name); | |
3200 | } | |
3201 | ||
3202 | w->priv = dai; | |
3203 | dai->playback_widget = w; | |
3204 | } | |
3205 | ||
3206 | if (dai->driver->capture.stream_name) { | |
3207 | template.id = snd_soc_dapm_dai; | |
3208 | template.name = dai->driver->capture.stream_name; | |
3209 | template.sname = dai->driver->capture.stream_name; | |
3210 | ||
3211 | dev_dbg(dai->dev, "adding %s widget\n", | |
3212 | template.name); | |
3213 | ||
3214 | w = snd_soc_dapm_new_control(dapm, &template); | |
3215 | if (!w) { | |
3216 | dev_err(dapm->dev, "Failed to create %s widget\n", | |
3217 | dai->driver->capture.stream_name); | |
3218 | } | |
3219 | ||
3220 | w->priv = dai; | |
3221 | dai->capture_widget = w; | |
3222 | } | |
3223 | ||
3224 | return 0; | |
3225 | } | |
3226 | ||
3227 | int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card) | |
3228 | { | |
3229 | struct snd_soc_dapm_widget *dai_w, *w; | |
3230 | struct snd_soc_dai *dai; | |
3231 | struct snd_soc_dapm_route r; | |
3232 | ||
3233 | memset(&r, 0, sizeof(r)); | |
3234 | ||
3235 | /* For each DAI widget... */ | |
3236 | list_for_each_entry(dai_w, &card->widgets, list) { | |
3237 | if (dai_w->id != snd_soc_dapm_dai) | |
2b97eabc | 3238 | continue; |
888df395 MB |
3239 | |
3240 | dai = dai_w->priv; | |
3241 | ||
3242 | /* ...find all widgets with the same stream and link them */ | |
3243 | list_for_each_entry(w, &card->widgets, list) { | |
3244 | if (w->dapm != dai_w->dapm) | |
3245 | continue; | |
3246 | ||
3247 | if (w->id == snd_soc_dapm_dai) | |
3248 | continue; | |
3249 | ||
3250 | if (!w->sname) | |
3251 | continue; | |
3252 | ||
3253 | if (dai->driver->playback.stream_name && | |
3254 | strstr(w->sname, | |
3255 | dai->driver->playback.stream_name)) { | |
3256 | r.source = dai->playback_widget->name; | |
3257 | r.sink = w->name; | |
3258 | dev_dbg(dai->dev, "%s -> %s\n", | |
3259 | r.source, r.sink); | |
3260 | ||
3261 | snd_soc_dapm_add_route(w->dapm, &r); | |
3262 | } | |
3263 | ||
3264 | if (dai->driver->capture.stream_name && | |
3265 | strstr(w->sname, | |
3266 | dai->driver->capture.stream_name)) { | |
3267 | r.source = w->name; | |
3268 | r.sink = dai->capture_widget->name; | |
3269 | dev_dbg(dai->dev, "%s -> %s\n", | |
3270 | r.source, r.sink); | |
3271 | ||
3272 | snd_soc_dapm_add_route(w->dapm, &r); | |
2b97eabc RP |
3273 | } |
3274 | } | |
3275 | } | |
2b97eabc | 3276 | |
888df395 MB |
3277 | return 0; |
3278 | } | |
64a648c2 | 3279 | |
d9b0951b LG |
3280 | static void soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream, |
3281 | int event) | |
2b97eabc | 3282 | { |
7bd3a6f3 | 3283 | |
d9b0951b LG |
3284 | struct snd_soc_dapm_widget *w_cpu, *w_codec; |
3285 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
3286 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
7bd3a6f3 | 3287 | |
d9b0951b LG |
3288 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
3289 | w_cpu = cpu_dai->playback_widget; | |
3290 | w_codec = codec_dai->playback_widget; | |
3291 | } else { | |
3292 | w_cpu = cpu_dai->capture_widget; | |
3293 | w_codec = codec_dai->capture_widget; | |
3294 | } | |
2b97eabc | 3295 | |
d9b0951b | 3296 | if (w_cpu) { |
fe360685 | 3297 | |
d9b0951b LG |
3298 | dapm_mark_dirty(w_cpu, "stream event"); |
3299 | ||
3300 | switch (event) { | |
3301 | case SND_SOC_DAPM_STREAM_START: | |
3302 | w_cpu->active = 1; | |
3303 | break; | |
3304 | case SND_SOC_DAPM_STREAM_STOP: | |
3305 | w_cpu->active = 0; | |
3306 | break; | |
3307 | case SND_SOC_DAPM_STREAM_SUSPEND: | |
3308 | case SND_SOC_DAPM_STREAM_RESUME: | |
3309 | case SND_SOC_DAPM_STREAM_PAUSE_PUSH: | |
3310 | case SND_SOC_DAPM_STREAM_PAUSE_RELEASE: | |
3311 | break; | |
3312 | } | |
3313 | } | |
3314 | ||
3315 | if (w_codec) { | |
3316 | ||
3317 | dapm_mark_dirty(w_codec, "stream event"); | |
3318 | ||
3319 | switch (event) { | |
3320 | case SND_SOC_DAPM_STREAM_START: | |
3321 | w_codec->active = 1; | |
3322 | break; | |
3323 | case SND_SOC_DAPM_STREAM_STOP: | |
3324 | w_codec->active = 0; | |
3325 | break; | |
3326 | case SND_SOC_DAPM_STREAM_SUSPEND: | |
3327 | case SND_SOC_DAPM_STREAM_RESUME: | |
3328 | case SND_SOC_DAPM_STREAM_PAUSE_PUSH: | |
3329 | case SND_SOC_DAPM_STREAM_PAUSE_RELEASE: | |
3330 | break; | |
3331 | } | |
2b97eabc | 3332 | } |
2b97eabc | 3333 | |
d9b0951b | 3334 | dapm_power_widgets(&rtd->card->dapm, event); |
ce6120cc LG |
3335 | } |
3336 | ||
3337 | /** | |
3338 | * snd_soc_dapm_stream_event - send a stream event to the dapm core | |
3339 | * @rtd: PCM runtime data | |
3340 | * @stream: stream name | |
3341 | * @event: stream event | |
3342 | * | |
3343 | * Sends a stream event to the dapm core. The core then makes any | |
3344 | * necessary widget power changes. | |
3345 | * | |
3346 | * Returns 0 for success else error. | |
3347 | */ | |
d9b0951b LG |
3348 | void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream, |
3349 | int event) | |
ce6120cc | 3350 | { |
a73fb2df | 3351 | struct snd_soc_card *card = rtd->card; |
ce6120cc | 3352 | |
3cd04343 | 3353 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
d9b0951b | 3354 | soc_dapm_stream_event(rtd, stream, event); |
a73fb2df | 3355 | mutex_unlock(&card->dapm_mutex); |
2b97eabc | 3356 | } |
2b97eabc RP |
3357 | |
3358 | /** | |
a5302181 | 3359 | * snd_soc_dapm_enable_pin - enable pin. |
ce6120cc | 3360 | * @dapm: DAPM context |
a5302181 | 3361 | * @pin: pin name |
2b97eabc | 3362 | * |
74b8f955 | 3363 | * Enables input/output pin and its parents or children widgets iff there is |
a5302181 LG |
3364 | * a valid audio route and active audio stream. |
3365 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
3366 | * do any widget power switching. | |
2b97eabc | 3367 | */ |
ce6120cc | 3368 | int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin) |
2b97eabc | 3369 | { |
ce6120cc | 3370 | return snd_soc_dapm_set_pin(dapm, pin, 1); |
a5302181 LG |
3371 | } |
3372 | EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin); | |
2b97eabc | 3373 | |
da34183e MB |
3374 | /** |
3375 | * snd_soc_dapm_force_enable_pin - force a pin to be enabled | |
ce6120cc | 3376 | * @dapm: DAPM context |
da34183e MB |
3377 | * @pin: pin name |
3378 | * | |
3379 | * Enables input/output pin regardless of any other state. This is | |
3380 | * intended for use with microphone bias supplies used in microphone | |
3381 | * jack detection. | |
3382 | * | |
3383 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
3384 | * do any widget power switching. | |
3385 | */ | |
ce6120cc LG |
3386 | int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm, |
3387 | const char *pin) | |
da34183e | 3388 | { |
91a5fca4 | 3389 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); |
da34183e | 3390 | |
91a5fca4 LPC |
3391 | if (!w) { |
3392 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); | |
3393 | return -EINVAL; | |
0d86733c MB |
3394 | } |
3395 | ||
91a5fca4 LPC |
3396 | dev_dbg(w->dapm->dev, "dapm: force enable pin %s\n", pin); |
3397 | w->connected = 1; | |
3398 | w->force = 1; | |
75c1f891 | 3399 | dapm_mark_dirty(w, "force enable"); |
da34183e | 3400 | |
91a5fca4 | 3401 | return 0; |
da34183e MB |
3402 | } |
3403 | EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin); | |
3404 | ||
a5302181 LG |
3405 | /** |
3406 | * snd_soc_dapm_disable_pin - disable pin. | |
ce6120cc | 3407 | * @dapm: DAPM context |
a5302181 LG |
3408 | * @pin: pin name |
3409 | * | |
74b8f955 | 3410 | * Disables input/output pin and its parents or children widgets. |
a5302181 LG |
3411 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to |
3412 | * do any widget power switching. | |
3413 | */ | |
ce6120cc LG |
3414 | int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm, |
3415 | const char *pin) | |
a5302181 | 3416 | { |
ce6120cc | 3417 | return snd_soc_dapm_set_pin(dapm, pin, 0); |
2b97eabc | 3418 | } |
a5302181 | 3419 | EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin); |
2b97eabc | 3420 | |
5817b52a MB |
3421 | /** |
3422 | * snd_soc_dapm_nc_pin - permanently disable pin. | |
ce6120cc | 3423 | * @dapm: DAPM context |
5817b52a MB |
3424 | * @pin: pin name |
3425 | * | |
3426 | * Marks the specified pin as being not connected, disabling it along | |
3427 | * any parent or child widgets. At present this is identical to | |
3428 | * snd_soc_dapm_disable_pin() but in future it will be extended to do | |
3429 | * additional things such as disabling controls which only affect | |
3430 | * paths through the pin. | |
3431 | * | |
3432 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
3433 | * do any widget power switching. | |
3434 | */ | |
ce6120cc | 3435 | int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin) |
5817b52a | 3436 | { |
ce6120cc | 3437 | return snd_soc_dapm_set_pin(dapm, pin, 0); |
5817b52a MB |
3438 | } |
3439 | EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin); | |
3440 | ||
eeec12bf | 3441 | /** |
a5302181 | 3442 | * snd_soc_dapm_get_pin_status - get audio pin status |
ce6120cc | 3443 | * @dapm: DAPM context |
a5302181 | 3444 | * @pin: audio signal pin endpoint (or start point) |
eeec12bf | 3445 | * |
a5302181 | 3446 | * Get audio pin status - connected or disconnected. |
eeec12bf | 3447 | * |
a5302181 | 3448 | * Returns 1 for connected otherwise 0. |
eeec12bf | 3449 | */ |
ce6120cc LG |
3450 | int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm, |
3451 | const char *pin) | |
eeec12bf | 3452 | { |
91a5fca4 | 3453 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); |
eeec12bf | 3454 | |
91a5fca4 LPC |
3455 | if (w) |
3456 | return w->connected; | |
a68b38ad | 3457 | |
eeec12bf GG |
3458 | return 0; |
3459 | } | |
a5302181 | 3460 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status); |
eeec12bf | 3461 | |
1547aba9 MB |
3462 | /** |
3463 | * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint | |
ce6120cc | 3464 | * @dapm: DAPM context |
1547aba9 MB |
3465 | * @pin: audio signal pin endpoint (or start point) |
3466 | * | |
3467 | * Mark the given endpoint or pin as ignoring suspend. When the | |
3468 | * system is disabled a path between two endpoints flagged as ignoring | |
3469 | * suspend will not be disabled. The path must already be enabled via | |
3470 | * normal means at suspend time, it will not be turned on if it was not | |
3471 | * already enabled. | |
3472 | */ | |
ce6120cc LG |
3473 | int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm, |
3474 | const char *pin) | |
1547aba9 | 3475 | { |
91a5fca4 | 3476 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, false); |
1547aba9 | 3477 | |
91a5fca4 LPC |
3478 | if (!w) { |
3479 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); | |
3480 | return -EINVAL; | |
1547aba9 MB |
3481 | } |
3482 | ||
91a5fca4 LPC |
3483 | w->ignore_suspend = 1; |
3484 | ||
3485 | return 0; | |
1547aba9 MB |
3486 | } |
3487 | EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend); | |
3488 | ||
1633281b SW |
3489 | static bool snd_soc_dapm_widget_in_card_paths(struct snd_soc_card *card, |
3490 | struct snd_soc_dapm_widget *w) | |
3491 | { | |
3492 | struct snd_soc_dapm_path *p; | |
3493 | ||
3494 | list_for_each_entry(p, &card->paths, list) { | |
3495 | if ((p->source == w) || (p->sink == w)) { | |
3496 | dev_dbg(card->dev, | |
3497 | "... Path %s(id:%d dapm:%p) - %s(id:%d dapm:%p)\n", | |
3498 | p->source->name, p->source->id, p->source->dapm, | |
3499 | p->sink->name, p->sink->id, p->sink->dapm); | |
3500 | ||
3501 | /* Connected to something other than the codec */ | |
3502 | if (p->source->dapm != p->sink->dapm) | |
3503 | return true; | |
3504 | /* | |
3505 | * Loopback connection from codec external pin to | |
3506 | * codec external pin | |
3507 | */ | |
3508 | if (p->sink->id == snd_soc_dapm_input) { | |
3509 | switch (p->source->id) { | |
3510 | case snd_soc_dapm_output: | |
3511 | case snd_soc_dapm_micbias: | |
3512 | return true; | |
3513 | default: | |
3514 | break; | |
3515 | } | |
3516 | } | |
3517 | } | |
3518 | } | |
3519 | ||
3520 | return false; | |
3521 | } | |
3522 | ||
3523 | /** | |
3524 | * snd_soc_dapm_auto_nc_codec_pins - call snd_soc_dapm_nc_pin for unused pins | |
3525 | * @codec: The codec whose pins should be processed | |
3526 | * | |
3527 | * Automatically call snd_soc_dapm_nc_pin() for any external pins in the codec | |
3528 | * which are unused. Pins are used if they are connected externally to the | |
3529 | * codec, whether that be to some other device, or a loop-back connection to | |
3530 | * the codec itself. | |
3531 | */ | |
3532 | void snd_soc_dapm_auto_nc_codec_pins(struct snd_soc_codec *codec) | |
3533 | { | |
3534 | struct snd_soc_card *card = codec->card; | |
3535 | struct snd_soc_dapm_context *dapm = &codec->dapm; | |
3536 | struct snd_soc_dapm_widget *w; | |
3537 | ||
a094b80b | 3538 | dev_dbg(codec->dev, "Auto NC: DAPMs: card:%p codec:%p\n", |
1633281b SW |
3539 | &card->dapm, &codec->dapm); |
3540 | ||
3541 | list_for_each_entry(w, &card->widgets, list) { | |
3542 | if (w->dapm != dapm) | |
3543 | continue; | |
3544 | switch (w->id) { | |
3545 | case snd_soc_dapm_input: | |
3546 | case snd_soc_dapm_output: | |
3547 | case snd_soc_dapm_micbias: | |
a094b80b | 3548 | dev_dbg(codec->dev, "Auto NC: Checking widget %s\n", |
1633281b SW |
3549 | w->name); |
3550 | if (!snd_soc_dapm_widget_in_card_paths(card, w)) { | |
a094b80b | 3551 | dev_dbg(codec->dev, |
1633281b SW |
3552 | "... Not in map; disabling\n"); |
3553 | snd_soc_dapm_nc_pin(dapm, w->name); | |
3554 | } | |
3555 | break; | |
3556 | default: | |
3557 | break; | |
3558 | } | |
3559 | } | |
3560 | } | |
3561 | ||
2b97eabc RP |
3562 | /** |
3563 | * snd_soc_dapm_free - free dapm resources | |
728a5222 | 3564 | * @dapm: DAPM context |
2b97eabc RP |
3565 | * |
3566 | * Free all dapm widgets and resources. | |
3567 | */ | |
ce6120cc | 3568 | void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm) |
2b97eabc | 3569 | { |
ce6120cc | 3570 | snd_soc_dapm_sys_remove(dapm->dev); |
6c45e126 | 3571 | dapm_debugfs_cleanup(dapm); |
ce6120cc | 3572 | dapm_free_widgets(dapm); |
7be31be8 | 3573 | list_del(&dapm->list); |
2b97eabc RP |
3574 | } |
3575 | EXPORT_SYMBOL_GPL(snd_soc_dapm_free); | |
3576 | ||
ce6120cc | 3577 | static void soc_dapm_shutdown_codec(struct snd_soc_dapm_context *dapm) |
51737470 | 3578 | { |
51737470 MB |
3579 | struct snd_soc_dapm_widget *w; |
3580 | LIST_HEAD(down_list); | |
3581 | int powerdown = 0; | |
3582 | ||
97c866de JN |
3583 | list_for_each_entry(w, &dapm->card->widgets, list) { |
3584 | if (w->dapm != dapm) | |
3585 | continue; | |
51737470 | 3586 | if (w->power) { |
828a842f | 3587 | dapm_seq_insert(w, &down_list, false); |
c2caa4da | 3588 | w->power = 0; |
51737470 MB |
3589 | powerdown = 1; |
3590 | } | |
3591 | } | |
3592 | ||
3593 | /* If there were no widgets to power down we're already in | |
3594 | * standby. | |
3595 | */ | |
3596 | if (powerdown) { | |
7679e42e MB |
3597 | if (dapm->bias_level == SND_SOC_BIAS_ON) |
3598 | snd_soc_dapm_set_bias_level(dapm, | |
3599 | SND_SOC_BIAS_PREPARE); | |
828a842f | 3600 | dapm_seq_run(dapm, &down_list, 0, false); |
7679e42e MB |
3601 | if (dapm->bias_level == SND_SOC_BIAS_PREPARE) |
3602 | snd_soc_dapm_set_bias_level(dapm, | |
3603 | SND_SOC_BIAS_STANDBY); | |
51737470 | 3604 | } |
f0fba2ad LG |
3605 | } |
3606 | ||
3607 | /* | |
3608 | * snd_soc_dapm_shutdown - callback for system shutdown | |
3609 | */ | |
3610 | void snd_soc_dapm_shutdown(struct snd_soc_card *card) | |
3611 | { | |
3612 | struct snd_soc_codec *codec; | |
3613 | ||
ce6120cc LG |
3614 | list_for_each_entry(codec, &card->codec_dev_list, list) { |
3615 | soc_dapm_shutdown_codec(&codec->dapm); | |
7679e42e MB |
3616 | if (codec->dapm.bias_level == SND_SOC_BIAS_STANDBY) |
3617 | snd_soc_dapm_set_bias_level(&codec->dapm, | |
3618 | SND_SOC_BIAS_OFF); | |
ce6120cc | 3619 | } |
51737470 MB |
3620 | } |
3621 | ||
2b97eabc | 3622 | /* Module information */ |
d331124d | 3623 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
2b97eabc RP |
3624 | MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC"); |
3625 | MODULE_LICENSE("GPL"); |