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> |
5a0e3ad6 | 38 | #include <linux/slab.h> |
2b97eabc RP |
39 | #include <sound/core.h> |
40 | #include <sound/pcm.h> | |
41 | #include <sound/pcm_params.h> | |
ce6120cc | 42 | #include <sound/soc.h> |
2b97eabc RP |
43 | #include <sound/initval.h> |
44 | ||
84e90930 MB |
45 | #include <trace/events/asoc.h> |
46 | ||
de02d078 MB |
47 | #define DAPM_UPDATE_STAT(widget, val) widget->dapm->card->dapm_stats.val++; |
48 | ||
2b97eabc RP |
49 | /* dapm power sequences - make this per codec in the future */ |
50 | static int dapm_up_seq[] = { | |
38357ab2 MB |
51 | [snd_soc_dapm_pre] = 0, |
52 | [snd_soc_dapm_supply] = 1, | |
62ea874a | 53 | [snd_soc_dapm_regulator_supply] = 1, |
38357ab2 | 54 | [snd_soc_dapm_micbias] = 2, |
c74184ed | 55 | [snd_soc_dapm_dai_link] = 2, |
888df395 | 56 | [snd_soc_dapm_dai] = 3, |
010ff262 MB |
57 | [snd_soc_dapm_aif_in] = 3, |
58 | [snd_soc_dapm_aif_out] = 3, | |
59 | [snd_soc_dapm_mic] = 4, | |
60 | [snd_soc_dapm_mux] = 5, | |
24ff33ac | 61 | [snd_soc_dapm_virt_mux] = 5, |
010ff262 MB |
62 | [snd_soc_dapm_value_mux] = 5, |
63 | [snd_soc_dapm_dac] = 6, | |
64 | [snd_soc_dapm_mixer] = 7, | |
65 | [snd_soc_dapm_mixer_named_ctl] = 7, | |
66 | [snd_soc_dapm_pga] = 8, | |
67 | [snd_soc_dapm_adc] = 9, | |
d88429a6 | 68 | [snd_soc_dapm_out_drv] = 10, |
010ff262 MB |
69 | [snd_soc_dapm_hp] = 10, |
70 | [snd_soc_dapm_spk] = 10, | |
7e1f7c8a | 71 | [snd_soc_dapm_line] = 10, |
010ff262 | 72 | [snd_soc_dapm_post] = 11, |
2b97eabc | 73 | }; |
ca9c1aae | 74 | |
2b97eabc | 75 | static int dapm_down_seq[] = { |
38357ab2 MB |
76 | [snd_soc_dapm_pre] = 0, |
77 | [snd_soc_dapm_adc] = 1, | |
78 | [snd_soc_dapm_hp] = 2, | |
1ca04065 | 79 | [snd_soc_dapm_spk] = 2, |
7e1f7c8a | 80 | [snd_soc_dapm_line] = 2, |
d88429a6 | 81 | [snd_soc_dapm_out_drv] = 2, |
38357ab2 MB |
82 | [snd_soc_dapm_pga] = 4, |
83 | [snd_soc_dapm_mixer_named_ctl] = 5, | |
e3d4dabd MB |
84 | [snd_soc_dapm_mixer] = 5, |
85 | [snd_soc_dapm_dac] = 6, | |
86 | [snd_soc_dapm_mic] = 7, | |
87 | [snd_soc_dapm_micbias] = 8, | |
88 | [snd_soc_dapm_mux] = 9, | |
24ff33ac | 89 | [snd_soc_dapm_virt_mux] = 9, |
e3d4dabd | 90 | [snd_soc_dapm_value_mux] = 9, |
010ff262 MB |
91 | [snd_soc_dapm_aif_in] = 10, |
92 | [snd_soc_dapm_aif_out] = 10, | |
888df395 | 93 | [snd_soc_dapm_dai] = 10, |
c74184ed MB |
94 | [snd_soc_dapm_dai_link] = 11, |
95 | [snd_soc_dapm_regulator_supply] = 12, | |
96 | [snd_soc_dapm_supply] = 12, | |
97 | [snd_soc_dapm_post] = 13, | |
2b97eabc RP |
98 | }; |
99 | ||
12ef193d | 100 | static void pop_wait(u32 pop_time) |
15e4c72f MB |
101 | { |
102 | if (pop_time) | |
103 | schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time)); | |
104 | } | |
105 | ||
fd8d3bc0 | 106 | static void pop_dbg(struct device *dev, u32 pop_time, const char *fmt, ...) |
15e4c72f MB |
107 | { |
108 | va_list args; | |
fd8d3bc0 | 109 | char *buf; |
15e4c72f | 110 | |
fd8d3bc0 JN |
111 | if (!pop_time) |
112 | return; | |
15e4c72f | 113 | |
fd8d3bc0 JN |
114 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); |
115 | if (buf == NULL) | |
116 | return; | |
15e4c72f | 117 | |
fd8d3bc0 JN |
118 | va_start(args, fmt); |
119 | vsnprintf(buf, PAGE_SIZE, fmt, args); | |
9d01df06 | 120 | dev_info(dev, "%s", buf); |
15e4c72f | 121 | va_end(args); |
fd8d3bc0 JN |
122 | |
123 | kfree(buf); | |
15e4c72f MB |
124 | } |
125 | ||
db432b41 MB |
126 | static bool dapm_dirty_widget(struct snd_soc_dapm_widget *w) |
127 | { | |
128 | return !list_empty(&w->dirty); | |
129 | } | |
130 | ||
25c77c5f | 131 | void dapm_mark_dirty(struct snd_soc_dapm_widget *w, const char *reason) |
db432b41 | 132 | { |
75c1f891 MB |
133 | if (!dapm_dirty_widget(w)) { |
134 | dev_vdbg(w->dapm->dev, "Marking %s dirty due to %s\n", | |
135 | w->name, reason); | |
db432b41 | 136 | list_add_tail(&w->dirty, &w->dapm->card->dapm_dirty); |
75c1f891 | 137 | } |
db432b41 | 138 | } |
25c77c5f | 139 | EXPORT_SYMBOL_GPL(dapm_mark_dirty); |
db432b41 | 140 | |
2b97eabc | 141 | /* create a new dapm widget */ |
88cb4290 | 142 | static inline struct snd_soc_dapm_widget *dapm_cnew_widget( |
2b97eabc RP |
143 | const struct snd_soc_dapm_widget *_widget) |
144 | { | |
88cb4290 | 145 | return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL); |
2b97eabc RP |
146 | } |
147 | ||
4805608a LG |
148 | /* get snd_card from DAPM context */ |
149 | static inline struct snd_card *dapm_get_snd_card( | |
150 | struct snd_soc_dapm_context *dapm) | |
151 | { | |
152 | if (dapm->codec) | |
153 | return dapm->codec->card->snd_card; | |
154 | else if (dapm->platform) | |
155 | return dapm->platform->card->snd_card; | |
156 | else | |
157 | BUG(); | |
158 | ||
159 | /* unreachable */ | |
160 | return NULL; | |
161 | } | |
162 | ||
163 | /* get soc_card from DAPM context */ | |
164 | static inline struct snd_soc_card *dapm_get_soc_card( | |
165 | struct snd_soc_dapm_context *dapm) | |
166 | { | |
167 | if (dapm->codec) | |
168 | return dapm->codec->card; | |
169 | else if (dapm->platform) | |
170 | return dapm->platform->card; | |
171 | else | |
172 | BUG(); | |
173 | ||
174 | /* unreachable */ | |
175 | return NULL; | |
176 | } | |
177 | ||
6c120e19 LG |
178 | static void dapm_reset(struct snd_soc_card *card) |
179 | { | |
180 | struct snd_soc_dapm_widget *w; | |
181 | ||
182 | memset(&card->dapm_stats, 0, sizeof(card->dapm_stats)); | |
183 | ||
184 | list_for_each_entry(w, &card->widgets, list) { | |
185 | w->power_checked = false; | |
186 | w->inputs = -1; | |
187 | w->outputs = -1; | |
188 | } | |
189 | } | |
190 | ||
0445bdf4 LG |
191 | static int soc_widget_read(struct snd_soc_dapm_widget *w, int reg) |
192 | { | |
193 | if (w->codec) | |
194 | return snd_soc_read(w->codec, reg); | |
b7950641 LG |
195 | else if (w->platform) |
196 | return snd_soc_platform_read(w->platform, reg); | |
197 | ||
198 | dev_err(w->dapm->dev, "no valid widget read method\n"); | |
199 | return -1; | |
0445bdf4 LG |
200 | } |
201 | ||
202 | static int soc_widget_write(struct snd_soc_dapm_widget *w, int reg, int val) | |
203 | { | |
204 | if (w->codec) | |
205 | return snd_soc_write(w->codec, reg, val); | |
b7950641 LG |
206 | else if (w->platform) |
207 | return snd_soc_platform_write(w->platform, reg, val); | |
208 | ||
209 | dev_err(w->dapm->dev, "no valid widget write method\n"); | |
210 | return -1; | |
0445bdf4 LG |
211 | } |
212 | ||
49575fb5 LG |
213 | static inline void soc_widget_lock(struct snd_soc_dapm_widget *w) |
214 | { | |
e06ab3b8 | 215 | if (w->codec && !w->codec->using_regmap) |
49575fb5 LG |
216 | mutex_lock(&w->codec->mutex); |
217 | else if (w->platform) | |
218 | mutex_lock(&w->platform->mutex); | |
219 | } | |
220 | ||
221 | static inline void soc_widget_unlock(struct snd_soc_dapm_widget *w) | |
222 | { | |
e06ab3b8 | 223 | if (w->codec && !w->codec->using_regmap) |
49575fb5 LG |
224 | mutex_unlock(&w->codec->mutex); |
225 | else if (w->platform) | |
226 | mutex_unlock(&w->platform->mutex); | |
227 | } | |
228 | ||
229 | static int soc_widget_update_bits_locked(struct snd_soc_dapm_widget *w, | |
0445bdf4 LG |
230 | unsigned short reg, unsigned int mask, unsigned int value) |
231 | { | |
8a713da8 | 232 | bool change; |
0445bdf4 LG |
233 | unsigned int old, new; |
234 | int ret; | |
235 | ||
8a713da8 MB |
236 | if (w->codec && w->codec->using_regmap) { |
237 | ret = regmap_update_bits_check(w->codec->control_data, | |
238 | reg, mask, value, &change); | |
239 | if (ret != 0) | |
240 | return ret; | |
241 | } else { | |
49575fb5 | 242 | soc_widget_lock(w); |
8a713da8 | 243 | ret = soc_widget_read(w, reg); |
49575fb5 LG |
244 | if (ret < 0) { |
245 | soc_widget_unlock(w); | |
0445bdf4 | 246 | return ret; |
49575fb5 | 247 | } |
8a713da8 MB |
248 | |
249 | old = ret; | |
250 | new = (old & ~mask) | (value & mask); | |
251 | change = old != new; | |
252 | if (change) { | |
253 | ret = soc_widget_write(w, reg, new); | |
49575fb5 LG |
254 | if (ret < 0) { |
255 | soc_widget_unlock(w); | |
8a713da8 | 256 | return ret; |
49575fb5 | 257 | } |
8a713da8 | 258 | } |
49575fb5 | 259 | soc_widget_unlock(w); |
0445bdf4 LG |
260 | } |
261 | ||
262 | return change; | |
263 | } | |
264 | ||
452c5eaa MB |
265 | /** |
266 | * snd_soc_dapm_set_bias_level - set the bias level for the system | |
ed5a4c47 | 267 | * @dapm: DAPM context |
452c5eaa MB |
268 | * @level: level to configure |
269 | * | |
270 | * Configure the bias (power) levels for the SoC audio device. | |
271 | * | |
272 | * Returns 0 for success else error. | |
273 | */ | |
ed5a4c47 | 274 | static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm, |
ce6120cc | 275 | enum snd_soc_bias_level level) |
452c5eaa | 276 | { |
ed5a4c47 | 277 | struct snd_soc_card *card = dapm->card; |
452c5eaa MB |
278 | int ret = 0; |
279 | ||
84e90930 MB |
280 | trace_snd_soc_bias_level_start(card, level); |
281 | ||
f0fba2ad | 282 | if (card && card->set_bias_level) |
d4c6005f | 283 | ret = card->set_bias_level(card, dapm, level); |
171ec6b0 MB |
284 | if (ret != 0) |
285 | goto out; | |
286 | ||
cc4c670a MB |
287 | if (dapm->codec) { |
288 | if (dapm->codec->driver->set_bias_level) | |
289 | ret = dapm->codec->driver->set_bias_level(dapm->codec, | |
290 | level); | |
291 | else | |
292 | dapm->bias_level = level; | |
293 | } | |
171ec6b0 MB |
294 | if (ret != 0) |
295 | goto out; | |
296 | ||
297 | if (card && card->set_bias_level_post) | |
d4c6005f | 298 | ret = card->set_bias_level_post(card, dapm, level); |
171ec6b0 | 299 | out: |
84e90930 MB |
300 | trace_snd_soc_bias_level_done(card, level); |
301 | ||
452c5eaa MB |
302 | return ret; |
303 | } | |
304 | ||
2b97eabc RP |
305 | /* set up initial codec paths */ |
306 | static void dapm_set_path_status(struct snd_soc_dapm_widget *w, | |
307 | struct snd_soc_dapm_path *p, int i) | |
308 | { | |
309 | switch (w->id) { | |
310 | case snd_soc_dapm_switch: | |
ca9c1aae IM |
311 | case snd_soc_dapm_mixer: |
312 | case snd_soc_dapm_mixer_named_ctl: { | |
2b97eabc | 313 | int val; |
4eaa9819 | 314 | struct soc_mixer_control *mc = (struct soc_mixer_control *) |
82cfecdc | 315 | w->kcontrol_news[i].private_value; |
815ecf8d JS |
316 | unsigned int reg = mc->reg; |
317 | unsigned int shift = mc->shift; | |
4eaa9819 | 318 | int max = mc->max; |
815ecf8d JS |
319 | unsigned int mask = (1 << fls(max)) - 1; |
320 | unsigned int invert = mc->invert; | |
2b97eabc | 321 | |
0445bdf4 | 322 | val = soc_widget_read(w, reg); |
2b97eabc RP |
323 | val = (val >> shift) & mask; |
324 | ||
325 | if ((invert && !val) || (!invert && val)) | |
326 | p->connect = 1; | |
327 | else | |
328 | p->connect = 0; | |
329 | } | |
330 | break; | |
331 | case snd_soc_dapm_mux: { | |
82cfecdc SW |
332 | struct soc_enum *e = (struct soc_enum *) |
333 | w->kcontrol_news[i].private_value; | |
2b97eabc RP |
334 | int val, item, bitmask; |
335 | ||
f8ba0b7b | 336 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
88d96086 | 337 | ; |
0445bdf4 | 338 | val = soc_widget_read(w, e->reg); |
2b97eabc RP |
339 | item = (val >> e->shift_l) & (bitmask - 1); |
340 | ||
341 | p->connect = 0; | |
f8ba0b7b | 342 | for (i = 0; i < e->max; i++) { |
2b97eabc RP |
343 | if (!(strcmp(p->name, e->texts[i])) && item == i) |
344 | p->connect = 1; | |
345 | } | |
346 | } | |
347 | break; | |
24ff33ac | 348 | case snd_soc_dapm_virt_mux: { |
82cfecdc SW |
349 | struct soc_enum *e = (struct soc_enum *) |
350 | w->kcontrol_news[i].private_value; | |
24ff33ac DP |
351 | |
352 | p->connect = 0; | |
353 | /* since a virtual mux has no backing registers to | |
354 | * decide which path to connect, it will try to match | |
355 | * with the first enumeration. This is to ensure | |
356 | * that the default mux choice (the first) will be | |
357 | * correctly powered up during initialization. | |
358 | */ | |
359 | if (!strcmp(p->name, e->texts[0])) | |
360 | p->connect = 1; | |
361 | } | |
362 | break; | |
2e72f8e3 | 363 | case snd_soc_dapm_value_mux: { |
74155556 | 364 | struct soc_enum *e = (struct soc_enum *) |
82cfecdc | 365 | w->kcontrol_news[i].private_value; |
2e72f8e3 PU |
366 | int val, item; |
367 | ||
0445bdf4 | 368 | val = soc_widget_read(w, e->reg); |
2e72f8e3 PU |
369 | val = (val >> e->shift_l) & e->mask; |
370 | for (item = 0; item < e->max; item++) { | |
371 | if (val == e->values[item]) | |
372 | break; | |
373 | } | |
374 | ||
375 | p->connect = 0; | |
376 | for (i = 0; i < e->max; i++) { | |
377 | if (!(strcmp(p->name, e->texts[i])) && item == i) | |
378 | p->connect = 1; | |
379 | } | |
380 | } | |
381 | break; | |
56563100 | 382 | /* does not affect routing - always connected */ |
2b97eabc | 383 | case snd_soc_dapm_pga: |
d88429a6 | 384 | case snd_soc_dapm_out_drv: |
2b97eabc RP |
385 | case snd_soc_dapm_output: |
386 | case snd_soc_dapm_adc: | |
387 | case snd_soc_dapm_input: | |
1ab97c8c | 388 | case snd_soc_dapm_siggen: |
2b97eabc RP |
389 | case snd_soc_dapm_dac: |
390 | case snd_soc_dapm_micbias: | |
391 | case snd_soc_dapm_vmid: | |
246d0a17 | 392 | case snd_soc_dapm_supply: |
62ea874a | 393 | case snd_soc_dapm_regulator_supply: |
010ff262 MB |
394 | case snd_soc_dapm_aif_in: |
395 | case snd_soc_dapm_aif_out: | |
888df395 | 396 | case snd_soc_dapm_dai: |
2b97eabc RP |
397 | case snd_soc_dapm_hp: |
398 | case snd_soc_dapm_mic: | |
399 | case snd_soc_dapm_spk: | |
400 | case snd_soc_dapm_line: | |
c74184ed | 401 | case snd_soc_dapm_dai_link: |
56563100 MB |
402 | p->connect = 1; |
403 | break; | |
404 | /* does affect routing - dynamically connected */ | |
2b97eabc RP |
405 | case snd_soc_dapm_pre: |
406 | case snd_soc_dapm_post: | |
407 | p->connect = 0; | |
408 | break; | |
409 | } | |
410 | } | |
411 | ||
74b8f955 | 412 | /* connect mux widget to its interconnecting audio paths */ |
ce6120cc | 413 | static int dapm_connect_mux(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
414 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, |
415 | struct snd_soc_dapm_path *path, const char *control_name, | |
416 | const struct snd_kcontrol_new *kcontrol) | |
417 | { | |
418 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
419 | int i; | |
420 | ||
f8ba0b7b | 421 | for (i = 0; i < e->max; i++) { |
2b97eabc | 422 | if (!(strcmp(control_name, e->texts[i]))) { |
8ddab3f5 | 423 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
424 | list_add(&path->list_sink, &dest->sources); |
425 | list_add(&path->list_source, &src->sinks); | |
426 | path->name = (char*)e->texts[i]; | |
427 | dapm_set_path_status(dest, path, 0); | |
428 | return 0; | |
429 | } | |
430 | } | |
431 | ||
432 | return -ENODEV; | |
433 | } | |
434 | ||
74b8f955 | 435 | /* connect mixer widget to its interconnecting audio paths */ |
ce6120cc | 436 | static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
437 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, |
438 | struct snd_soc_dapm_path *path, const char *control_name) | |
439 | { | |
440 | int i; | |
441 | ||
442 | /* search for mixer kcontrol */ | |
443 | for (i = 0; i < dest->num_kcontrols; i++) { | |
82cfecdc | 444 | if (!strcmp(control_name, dest->kcontrol_news[i].name)) { |
8ddab3f5 | 445 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
446 | list_add(&path->list_sink, &dest->sources); |
447 | list_add(&path->list_source, &src->sinks); | |
82cfecdc | 448 | path->name = dest->kcontrol_news[i].name; |
2b97eabc RP |
449 | dapm_set_path_status(dest, path, i); |
450 | return 0; | |
451 | } | |
452 | } | |
453 | return -ENODEV; | |
454 | } | |
455 | ||
af46800b | 456 | static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context *dapm, |
1007da06 | 457 | struct snd_soc_dapm_widget *kcontrolw, |
af46800b SW |
458 | const struct snd_kcontrol_new *kcontrol_new, |
459 | struct snd_kcontrol **kcontrol) | |
460 | { | |
461 | struct snd_soc_dapm_widget *w; | |
462 | int i; | |
463 | ||
464 | *kcontrol = NULL; | |
465 | ||
466 | list_for_each_entry(w, &dapm->card->widgets, list) { | |
1007da06 SW |
467 | if (w == kcontrolw || w->dapm != kcontrolw->dapm) |
468 | continue; | |
af46800b SW |
469 | for (i = 0; i < w->num_kcontrols; i++) { |
470 | if (&w->kcontrol_news[i] == kcontrol_new) { | |
471 | if (w->kcontrols) | |
472 | *kcontrol = w->kcontrols[i]; | |
473 | return 1; | |
474 | } | |
475 | } | |
476 | } | |
477 | ||
478 | return 0; | |
479 | } | |
480 | ||
2b97eabc | 481 | /* create new dapm mixer control */ |
4b80b8c2 | 482 | static int dapm_new_mixer(struct snd_soc_dapm_widget *w) |
2b97eabc | 483 | { |
4b80b8c2 | 484 | struct snd_soc_dapm_context *dapm = w->dapm; |
2b97eabc | 485 | int i, ret = 0; |
3e5ff4df | 486 | size_t name_len, prefix_len; |
2b97eabc | 487 | struct snd_soc_dapm_path *path; |
12ea2c78 | 488 | struct snd_card *card = dapm->card->snd_card; |
efb7ac3f | 489 | const char *prefix; |
fafd2176 SW |
490 | struct snd_soc_dapm_widget_list *wlist; |
491 | size_t wlistsize; | |
efb7ac3f MB |
492 | |
493 | if (dapm->codec) | |
494 | prefix = dapm->codec->name_prefix; | |
495 | else | |
496 | prefix = NULL; | |
2b97eabc | 497 | |
3e5ff4df MB |
498 | if (prefix) |
499 | prefix_len = strlen(prefix) + 1; | |
500 | else | |
501 | prefix_len = 0; | |
502 | ||
2b97eabc RP |
503 | /* add kcontrol */ |
504 | for (i = 0; i < w->num_kcontrols; i++) { | |
505 | ||
506 | /* match name */ | |
507 | list_for_each_entry(path, &w->sources, list_sink) { | |
508 | ||
509 | /* mixer/mux paths name must match control name */ | |
82cfecdc | 510 | if (path->name != (char *)w->kcontrol_news[i].name) |
2b97eabc RP |
511 | continue; |
512 | ||
82cd8764 LPC |
513 | if (w->kcontrols[i]) { |
514 | path->kcontrol = w->kcontrols[i]; | |
515 | continue; | |
516 | } | |
517 | ||
fafd2176 SW |
518 | wlistsize = sizeof(struct snd_soc_dapm_widget_list) + |
519 | sizeof(struct snd_soc_dapm_widget *), | |
520 | wlist = kzalloc(wlistsize, GFP_KERNEL); | |
521 | if (wlist == NULL) { | |
522 | dev_err(dapm->dev, | |
523 | "asoc: can't allocate widget list for %s\n", | |
524 | w->name); | |
525 | return -ENOMEM; | |
526 | } | |
527 | wlist->num_widgets = 1; | |
528 | wlist->widgets[0] = w; | |
529 | ||
ca9c1aae IM |
530 | /* add dapm control with long name. |
531 | * for dapm_mixer this is the concatenation of the | |
532 | * mixer and kcontrol name. | |
533 | * for dapm_mixer_named_ctl this is simply the | |
534 | * kcontrol name. | |
535 | */ | |
82cfecdc | 536 | name_len = strlen(w->kcontrol_news[i].name) + 1; |
07495f3e | 537 | if (w->id != snd_soc_dapm_mixer_named_ctl) |
ca9c1aae IM |
538 | name_len += 1 + strlen(w->name); |
539 | ||
219b93f5 | 540 | path->long_name = kmalloc(name_len, GFP_KERNEL); |
ca9c1aae | 541 | |
fafd2176 SW |
542 | if (path->long_name == NULL) { |
543 | kfree(wlist); | |
2b97eabc | 544 | return -ENOMEM; |
fafd2176 | 545 | } |
2b97eabc | 546 | |
ca9c1aae | 547 | switch (w->id) { |
ca9c1aae | 548 | default: |
3e5ff4df MB |
549 | /* The control will get a prefix from |
550 | * the control creation process but | |
551 | * we're also using the same prefix | |
552 | * for widgets so cut the prefix off | |
553 | * the front of the widget name. | |
554 | */ | |
888df395 MB |
555 | snprintf((char *)path->long_name, name_len, |
556 | "%s %s", w->name + prefix_len, | |
82cfecdc | 557 | w->kcontrol_news[i].name); |
07495f3e | 558 | break; |
ca9c1aae | 559 | case snd_soc_dapm_mixer_named_ctl: |
888df395 MB |
560 | snprintf((char *)path->long_name, name_len, |
561 | "%s", w->kcontrol_news[i].name); | |
07495f3e | 562 | break; |
ca9c1aae IM |
563 | } |
564 | ||
888df395 | 565 | ((char *)path->long_name)[name_len - 1] = '\0'; |
219b93f5 | 566 | |
fafd2176 SW |
567 | path->kcontrol = snd_soc_cnew(&w->kcontrol_news[i], |
568 | wlist, path->long_name, | |
569 | prefix); | |
ce6120cc | 570 | ret = snd_ctl_add(card, path->kcontrol); |
2b97eabc | 571 | if (ret < 0) { |
f7d41ae8 JN |
572 | dev_err(dapm->dev, |
573 | "asoc: failed to add dapm kcontrol %s: %d\n", | |
574 | path->long_name, ret); | |
fafd2176 | 575 | kfree(wlist); |
2b97eabc RP |
576 | kfree(path->long_name); |
577 | path->long_name = NULL; | |
578 | return ret; | |
579 | } | |
fad59888 | 580 | w->kcontrols[i] = path->kcontrol; |
2b97eabc RP |
581 | } |
582 | } | |
583 | return ret; | |
584 | } | |
585 | ||
586 | /* create new dapm mux control */ | |
4b80b8c2 | 587 | static int dapm_new_mux(struct snd_soc_dapm_widget *w) |
2b97eabc | 588 | { |
4b80b8c2 | 589 | struct snd_soc_dapm_context *dapm = w->dapm; |
2b97eabc RP |
590 | struct snd_soc_dapm_path *path = NULL; |
591 | struct snd_kcontrol *kcontrol; | |
12ea2c78 | 592 | struct snd_card *card = dapm->card->snd_card; |
efb7ac3f | 593 | const char *prefix; |
3e5ff4df | 594 | size_t prefix_len; |
af46800b | 595 | int ret; |
fafd2176 | 596 | struct snd_soc_dapm_widget_list *wlist; |
af46800b | 597 | int shared, wlistentries; |
fafd2176 | 598 | size_t wlistsize; |
888df395 | 599 | const char *name; |
2b97eabc | 600 | |
af46800b SW |
601 | if (w->num_kcontrols != 1) { |
602 | dev_err(dapm->dev, | |
603 | "asoc: mux %s has incorrect number of controls\n", | |
604 | w->name); | |
2b97eabc RP |
605 | return -EINVAL; |
606 | } | |
607 | ||
1007da06 | 608 | shared = dapm_is_shared_kcontrol(dapm, w, &w->kcontrol_news[0], |
af46800b SW |
609 | &kcontrol); |
610 | if (kcontrol) { | |
611 | wlist = kcontrol->private_data; | |
612 | wlistentries = wlist->num_widgets + 1; | |
613 | } else { | |
614 | wlist = NULL; | |
615 | wlistentries = 1; | |
616 | } | |
fafd2176 | 617 | wlistsize = sizeof(struct snd_soc_dapm_widget_list) + |
af46800b SW |
618 | wlistentries * sizeof(struct snd_soc_dapm_widget *), |
619 | wlist = krealloc(wlist, wlistsize, GFP_KERNEL); | |
fafd2176 SW |
620 | if (wlist == NULL) { |
621 | dev_err(dapm->dev, | |
622 | "asoc: can't allocate widget list for %s\n", w->name); | |
623 | return -ENOMEM; | |
624 | } | |
af46800b SW |
625 | wlist->num_widgets = wlistentries; |
626 | wlist->widgets[wlistentries - 1] = w; | |
efb7ac3f | 627 | |
af46800b SW |
628 | if (!kcontrol) { |
629 | if (dapm->codec) | |
630 | prefix = dapm->codec->name_prefix; | |
631 | else | |
632 | prefix = NULL; | |
633 | ||
634 | if (shared) { | |
635 | name = w->kcontrol_news[0].name; | |
636 | prefix_len = 0; | |
637 | } else { | |
638 | name = w->name; | |
639 | if (prefix) | |
640 | prefix_len = strlen(prefix) + 1; | |
641 | else | |
642 | prefix_len = 0; | |
643 | } | |
3e5ff4df | 644 | |
af46800b SW |
645 | /* |
646 | * The control will get a prefix from the control creation | |
647 | * process but we're also using the same prefix for widgets so | |
648 | * cut the prefix off the front of the widget name. | |
649 | */ | |
650 | kcontrol = snd_soc_cnew(&w->kcontrol_news[0], wlist, | |
651 | name + prefix_len, prefix); | |
652 | ret = snd_ctl_add(card, kcontrol); | |
653 | if (ret < 0) { | |
53daf208 MB |
654 | dev_err(dapm->dev, "failed to add kcontrol %s: %d\n", |
655 | w->name, ret); | |
af46800b SW |
656 | kfree(wlist); |
657 | return ret; | |
658 | } | |
659 | } | |
ce6120cc | 660 | |
af46800b | 661 | kcontrol->private_data = wlist; |
2b97eabc | 662 | |
fad59888 SW |
663 | w->kcontrols[0] = kcontrol; |
664 | ||
2b97eabc RP |
665 | list_for_each_entry(path, &w->sources, list_sink) |
666 | path->kcontrol = kcontrol; | |
667 | ||
af46800b | 668 | return 0; |
2b97eabc RP |
669 | } |
670 | ||
671 | /* create new dapm volume control */ | |
4b80b8c2 | 672 | static int dapm_new_pga(struct snd_soc_dapm_widget *w) |
2b97eabc | 673 | { |
a6c65736 | 674 | if (w->num_kcontrols) |
f7d41ae8 JN |
675 | dev_err(w->dapm->dev, |
676 | "asoc: PGA controls not supported: '%s'\n", w->name); | |
2b97eabc | 677 | |
a6c65736 | 678 | return 0; |
2b97eabc RP |
679 | } |
680 | ||
681 | /* reset 'walked' bit for each dapm path */ | |
ce6120cc | 682 | static inline void dapm_clear_walk(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
683 | { |
684 | struct snd_soc_dapm_path *p; | |
685 | ||
8ddab3f5 | 686 | list_for_each_entry(p, &dapm->card->paths, list) |
2b97eabc RP |
687 | p->walked = 0; |
688 | } | |
689 | ||
9949788b MB |
690 | /* We implement power down on suspend by checking the power state of |
691 | * the ALSA card - when we are suspending the ALSA state for the card | |
692 | * is set to D3. | |
693 | */ | |
694 | static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget) | |
695 | { | |
12ea2c78 | 696 | int level = snd_power_get_state(widget->dapm->card->snd_card); |
9949788b | 697 | |
f0fba2ad | 698 | switch (level) { |
9949788b MB |
699 | case SNDRV_CTL_POWER_D3hot: |
700 | case SNDRV_CTL_POWER_D3cold: | |
1547aba9 | 701 | if (widget->ignore_suspend) |
f7d41ae8 JN |
702 | dev_dbg(widget->dapm->dev, "%s ignoring suspend\n", |
703 | widget->name); | |
1547aba9 | 704 | return widget->ignore_suspend; |
9949788b MB |
705 | default: |
706 | return 1; | |
707 | } | |
708 | } | |
709 | ||
ec2e3031 LG |
710 | /* add widget to list if it's not already in the list */ |
711 | static int dapm_list_add_widget(struct snd_soc_dapm_widget_list **list, | |
712 | struct snd_soc_dapm_widget *w) | |
713 | { | |
714 | struct snd_soc_dapm_widget_list *wlist; | |
715 | int wlistsize, wlistentries, i; | |
716 | ||
717 | if (*list == NULL) | |
718 | return -EINVAL; | |
719 | ||
720 | wlist = *list; | |
721 | ||
722 | /* is this widget already in the list */ | |
723 | for (i = 0; i < wlist->num_widgets; i++) { | |
724 | if (wlist->widgets[i] == w) | |
725 | return 0; | |
726 | } | |
727 | ||
728 | /* allocate some new space */ | |
729 | wlistentries = wlist->num_widgets + 1; | |
730 | wlistsize = sizeof(struct snd_soc_dapm_widget_list) + | |
731 | wlistentries * sizeof(struct snd_soc_dapm_widget *); | |
732 | *list = krealloc(wlist, wlistsize, GFP_KERNEL); | |
733 | if (*list == NULL) { | |
734 | dev_err(w->dapm->dev, "can't allocate widget list for %s\n", | |
735 | w->name); | |
736 | return -ENOMEM; | |
737 | } | |
738 | wlist = *list; | |
739 | ||
740 | /* insert the widget */ | |
741 | dev_dbg(w->dapm->dev, "added %s in widget list pos %d\n", | |
742 | w->name, wlist->num_widgets); | |
743 | ||
744 | wlist->widgets[wlist->num_widgets] = w; | |
745 | wlist->num_widgets++; | |
746 | return 1; | |
747 | } | |
748 | ||
2b97eabc RP |
749 | /* |
750 | * Recursively check for a completed path to an active or physically connected | |
751 | * output widget. Returns number of complete paths. | |
752 | */ | |
ec2e3031 LG |
753 | static int is_connected_output_ep(struct snd_soc_dapm_widget *widget, |
754 | struct snd_soc_dapm_widget_list **list) | |
2b97eabc RP |
755 | { |
756 | struct snd_soc_dapm_path *path; | |
757 | int con = 0; | |
758 | ||
024dc078 MB |
759 | if (widget->outputs >= 0) |
760 | return widget->outputs; | |
761 | ||
de02d078 MB |
762 | DAPM_UPDATE_STAT(widget, path_checks); |
763 | ||
62ea874a MB |
764 | switch (widget->id) { |
765 | case snd_soc_dapm_supply: | |
766 | case snd_soc_dapm_regulator_supply: | |
246d0a17 | 767 | return 0; |
62ea874a MB |
768 | default: |
769 | break; | |
770 | } | |
246d0a17 | 771 | |
010ff262 MB |
772 | switch (widget->id) { |
773 | case snd_soc_dapm_adc: | |
774 | case snd_soc_dapm_aif_out: | |
888df395 | 775 | case snd_soc_dapm_dai: |
024dc078 MB |
776 | if (widget->active) { |
777 | widget->outputs = snd_soc_dapm_suspend_check(widget); | |
778 | return widget->outputs; | |
779 | } | |
010ff262 MB |
780 | default: |
781 | break; | |
782 | } | |
2b97eabc RP |
783 | |
784 | if (widget->connected) { | |
785 | /* connected pin ? */ | |
024dc078 MB |
786 | if (widget->id == snd_soc_dapm_output && !widget->ext) { |
787 | widget->outputs = snd_soc_dapm_suspend_check(widget); | |
788 | return widget->outputs; | |
789 | } | |
2b97eabc RP |
790 | |
791 | /* connected jack or spk ? */ | |
024dc078 MB |
792 | if (widget->id == snd_soc_dapm_hp || |
793 | widget->id == snd_soc_dapm_spk || | |
794 | (widget->id == snd_soc_dapm_line && | |
795 | !list_empty(&widget->sources))) { | |
796 | widget->outputs = snd_soc_dapm_suspend_check(widget); | |
797 | return widget->outputs; | |
798 | } | |
2b97eabc RP |
799 | } |
800 | ||
801 | list_for_each_entry(path, &widget->sinks, list_source) { | |
e56235e0 MB |
802 | DAPM_UPDATE_STAT(widget, neighbour_checks); |
803 | ||
bf3a9e13 MB |
804 | if (path->weak) |
805 | continue; | |
806 | ||
2b97eabc RP |
807 | if (path->walked) |
808 | continue; | |
809 | ||
ec2e3031 LG |
810 | trace_snd_soc_dapm_output_path(widget, path); |
811 | ||
2b97eabc RP |
812 | if (path->sink && path->connect) { |
813 | path->walked = 1; | |
ec2e3031 LG |
814 | |
815 | /* do we need to add this widget to the list ? */ | |
816 | if (list) { | |
817 | int err; | |
818 | err = dapm_list_add_widget(list, path->sink); | |
819 | if (err < 0) { | |
820 | dev_err(widget->dapm->dev, "could not add widget %s\n", | |
821 | widget->name); | |
822 | return con; | |
823 | } | |
824 | } | |
825 | ||
826 | con += is_connected_output_ep(path->sink, list); | |
2b97eabc RP |
827 | } |
828 | } | |
829 | ||
024dc078 MB |
830 | widget->outputs = con; |
831 | ||
2b97eabc RP |
832 | return con; |
833 | } | |
834 | ||
835 | /* | |
836 | * Recursively check for a completed path to an active or physically connected | |
837 | * input widget. Returns number of complete paths. | |
838 | */ | |
ec2e3031 LG |
839 | static int is_connected_input_ep(struct snd_soc_dapm_widget *widget, |
840 | struct snd_soc_dapm_widget_list **list) | |
2b97eabc RP |
841 | { |
842 | struct snd_soc_dapm_path *path; | |
843 | int con = 0; | |
844 | ||
024dc078 MB |
845 | if (widget->inputs >= 0) |
846 | return widget->inputs; | |
847 | ||
de02d078 MB |
848 | DAPM_UPDATE_STAT(widget, path_checks); |
849 | ||
62ea874a MB |
850 | switch (widget->id) { |
851 | case snd_soc_dapm_supply: | |
852 | case snd_soc_dapm_regulator_supply: | |
246d0a17 | 853 | return 0; |
62ea874a MB |
854 | default: |
855 | break; | |
856 | } | |
246d0a17 | 857 | |
2b97eabc | 858 | /* active stream ? */ |
010ff262 MB |
859 | switch (widget->id) { |
860 | case snd_soc_dapm_dac: | |
861 | case snd_soc_dapm_aif_in: | |
888df395 | 862 | case snd_soc_dapm_dai: |
024dc078 MB |
863 | if (widget->active) { |
864 | widget->inputs = snd_soc_dapm_suspend_check(widget); | |
865 | return widget->inputs; | |
866 | } | |
010ff262 MB |
867 | default: |
868 | break; | |
869 | } | |
2b97eabc RP |
870 | |
871 | if (widget->connected) { | |
872 | /* connected pin ? */ | |
024dc078 MB |
873 | if (widget->id == snd_soc_dapm_input && !widget->ext) { |
874 | widget->inputs = snd_soc_dapm_suspend_check(widget); | |
875 | return widget->inputs; | |
876 | } | |
2b97eabc RP |
877 | |
878 | /* connected VMID/Bias for lower pops */ | |
024dc078 MB |
879 | if (widget->id == snd_soc_dapm_vmid) { |
880 | widget->inputs = snd_soc_dapm_suspend_check(widget); | |
881 | return widget->inputs; | |
882 | } | |
2b97eabc RP |
883 | |
884 | /* connected jack ? */ | |
eaeae5d9 | 885 | if (widget->id == snd_soc_dapm_mic || |
024dc078 MB |
886 | (widget->id == snd_soc_dapm_line && |
887 | !list_empty(&widget->sinks))) { | |
888 | widget->inputs = snd_soc_dapm_suspend_check(widget); | |
889 | return widget->inputs; | |
890 | } | |
891 | ||
1ab97c8c MB |
892 | /* signal generator */ |
893 | if (widget->id == snd_soc_dapm_siggen) { | |
894 | widget->inputs = snd_soc_dapm_suspend_check(widget); | |
895 | return widget->inputs; | |
896 | } | |
2b97eabc RP |
897 | } |
898 | ||
899 | list_for_each_entry(path, &widget->sources, list_sink) { | |
e56235e0 MB |
900 | DAPM_UPDATE_STAT(widget, neighbour_checks); |
901 | ||
bf3a9e13 MB |
902 | if (path->weak) |
903 | continue; | |
904 | ||
2b97eabc RP |
905 | if (path->walked) |
906 | continue; | |
907 | ||
ec2e3031 LG |
908 | trace_snd_soc_dapm_input_path(widget, path); |
909 | ||
2b97eabc RP |
910 | if (path->source && path->connect) { |
911 | path->walked = 1; | |
ec2e3031 LG |
912 | |
913 | /* do we need to add this widget to the list ? */ | |
914 | if (list) { | |
915 | int err; | |
916 | err = dapm_list_add_widget(list, path->sink); | |
917 | if (err < 0) { | |
918 | dev_err(widget->dapm->dev, "could not add widget %s\n", | |
919 | widget->name); | |
920 | return con; | |
921 | } | |
922 | } | |
923 | ||
924 | con += is_connected_input_ep(path->source, list); | |
2b97eabc RP |
925 | } |
926 | } | |
927 | ||
024dc078 MB |
928 | widget->inputs = con; |
929 | ||
2b97eabc RP |
930 | return con; |
931 | } | |
932 | ||
ec2e3031 LG |
933 | /** |
934 | * snd_soc_dapm_get_connected_widgets - query audio path and it's widgets. | |
935 | * @dai: the soc DAI. | |
936 | * @stream: stream direction. | |
937 | * @list: list of active widgets for this stream. | |
938 | * | |
939 | * Queries DAPM graph as to whether an valid audio stream path exists for | |
940 | * the initial stream specified by name. This takes into account | |
941 | * current mixer and mux kcontrol settings. Creates list of valid widgets. | |
942 | * | |
943 | * Returns the number of valid paths or negative error. | |
944 | */ | |
945 | int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai *dai, int stream, | |
946 | struct snd_soc_dapm_widget_list **list) | |
947 | { | |
948 | struct snd_soc_card *card = dai->card; | |
949 | int paths; | |
950 | ||
951 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); | |
952 | dapm_reset(card); | |
953 | ||
954 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) | |
955 | paths = is_connected_output_ep(dai->playback_widget, list); | |
956 | else | |
957 | paths = is_connected_input_ep(dai->playback_widget, list); | |
958 | ||
959 | trace_snd_soc_dapm_connected(paths, stream); | |
960 | dapm_clear_walk(&card->dapm); | |
961 | mutex_unlock(&card->dapm_mutex); | |
962 | ||
963 | return paths; | |
964 | } | |
965 | ||
e2be2ccf JN |
966 | /* |
967 | * Handler for generic register modifier widget. | |
968 | */ | |
969 | int dapm_reg_event(struct snd_soc_dapm_widget *w, | |
970 | struct snd_kcontrol *kcontrol, int event) | |
971 | { | |
972 | unsigned int val; | |
973 | ||
974 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
975 | val = w->on_val; | |
976 | else | |
977 | val = w->off_val; | |
978 | ||
49575fb5 | 979 | soc_widget_update_bits_locked(w, -(w->reg + 1), |
e2be2ccf JN |
980 | w->mask << w->shift, val << w->shift); |
981 | ||
982 | return 0; | |
983 | } | |
11589418 | 984 | EXPORT_SYMBOL_GPL(dapm_reg_event); |
e2be2ccf | 985 | |
62ea874a MB |
986 | /* |
987 | * Handler for regulator supply widget. | |
988 | */ | |
989 | int dapm_regulator_event(struct snd_soc_dapm_widget *w, | |
990 | struct snd_kcontrol *kcontrol, int event) | |
991 | { | |
992 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
a3cc056b | 993 | return regulator_enable(w->regulator); |
62ea874a | 994 | else |
a3cc056b | 995 | return regulator_disable_deferred(w->regulator, w->shift); |
62ea874a MB |
996 | } |
997 | EXPORT_SYMBOL_GPL(dapm_regulator_event); | |
998 | ||
d805002b MB |
999 | static int dapm_widget_power_check(struct snd_soc_dapm_widget *w) |
1000 | { | |
9b8a83b2 MB |
1001 | if (w->power_checked) |
1002 | return w->new_power; | |
1003 | ||
d805002b | 1004 | if (w->force) |
9b8a83b2 | 1005 | w->new_power = 1; |
d805002b | 1006 | else |
9b8a83b2 MB |
1007 | w->new_power = w->power_check(w); |
1008 | ||
1009 | w->power_checked = true; | |
1010 | ||
1011 | return w->new_power; | |
d805002b MB |
1012 | } |
1013 | ||
cd0f2d47 MB |
1014 | /* Generic check to see if a widget should be powered. |
1015 | */ | |
1016 | static int dapm_generic_check_power(struct snd_soc_dapm_widget *w) | |
1017 | { | |
1018 | int in, out; | |
1019 | ||
de02d078 MB |
1020 | DAPM_UPDATE_STAT(w, power_checks); |
1021 | ||
ec2e3031 | 1022 | in = is_connected_input_ep(w, NULL); |
ce6120cc | 1023 | dapm_clear_walk(w->dapm); |
ec2e3031 | 1024 | out = is_connected_output_ep(w, NULL); |
ce6120cc | 1025 | dapm_clear_walk(w->dapm); |
cd0f2d47 MB |
1026 | return out != 0 && in != 0; |
1027 | } | |
1028 | ||
888df395 MB |
1029 | static int dapm_dai_check_power(struct snd_soc_dapm_widget *w) |
1030 | { | |
1031 | DAPM_UPDATE_STAT(w, power_checks); | |
1032 | ||
1eee1b38 MB |
1033 | if (w->active) |
1034 | return w->active; | |
1035 | ||
1036 | return dapm_generic_check_power(w); | |
888df395 MB |
1037 | } |
1038 | ||
6ea31b9f MB |
1039 | /* Check to see if an ADC has power */ |
1040 | static int dapm_adc_check_power(struct snd_soc_dapm_widget *w) | |
1041 | { | |
1042 | int in; | |
1043 | ||
de02d078 MB |
1044 | DAPM_UPDATE_STAT(w, power_checks); |
1045 | ||
6ea31b9f | 1046 | if (w->active) { |
ec2e3031 | 1047 | in = is_connected_input_ep(w, NULL); |
ce6120cc | 1048 | dapm_clear_walk(w->dapm); |
6ea31b9f MB |
1049 | return in != 0; |
1050 | } else { | |
1051 | return dapm_generic_check_power(w); | |
1052 | } | |
1053 | } | |
1054 | ||
1055 | /* Check to see if a DAC has power */ | |
1056 | static int dapm_dac_check_power(struct snd_soc_dapm_widget *w) | |
1057 | { | |
1058 | int out; | |
1059 | ||
de02d078 MB |
1060 | DAPM_UPDATE_STAT(w, power_checks); |
1061 | ||
6ea31b9f | 1062 | if (w->active) { |
ec2e3031 | 1063 | out = is_connected_output_ep(w, NULL); |
ce6120cc | 1064 | dapm_clear_walk(w->dapm); |
6ea31b9f MB |
1065 | return out != 0; |
1066 | } else { | |
1067 | return dapm_generic_check_power(w); | |
1068 | } | |
1069 | } | |
1070 | ||
246d0a17 MB |
1071 | /* Check to see if a power supply is needed */ |
1072 | static int dapm_supply_check_power(struct snd_soc_dapm_widget *w) | |
1073 | { | |
1074 | struct snd_soc_dapm_path *path; | |
246d0a17 | 1075 | |
de02d078 MB |
1076 | DAPM_UPDATE_STAT(w, power_checks); |
1077 | ||
246d0a17 MB |
1078 | /* Check if one of our outputs is connected */ |
1079 | list_for_each_entry(path, &w->sinks, list_source) { | |
a8fdac83 MB |
1080 | DAPM_UPDATE_STAT(w, neighbour_checks); |
1081 | ||
bf3a9e13 MB |
1082 | if (path->weak) |
1083 | continue; | |
1084 | ||
215edda3 MB |
1085 | if (path->connected && |
1086 | !path->connected(path->source, path->sink)) | |
1087 | continue; | |
1088 | ||
3017358a MB |
1089 | if (!path->sink) |
1090 | continue; | |
1091 | ||
f68d7e16 MB |
1092 | if (dapm_widget_power_check(path->sink)) |
1093 | return 1; | |
246d0a17 MB |
1094 | } |
1095 | ||
ce6120cc | 1096 | dapm_clear_walk(w->dapm); |
246d0a17 | 1097 | |
f68d7e16 | 1098 | return 0; |
246d0a17 MB |
1099 | } |
1100 | ||
35c64bca MB |
1101 | static int dapm_always_on_check_power(struct snd_soc_dapm_widget *w) |
1102 | { | |
1103 | return 1; | |
1104 | } | |
1105 | ||
38357ab2 MB |
1106 | static int dapm_seq_compare(struct snd_soc_dapm_widget *a, |
1107 | struct snd_soc_dapm_widget *b, | |
828a842f | 1108 | bool power_up) |
42aa3418 | 1109 | { |
828a842f MB |
1110 | int *sort; |
1111 | ||
1112 | if (power_up) | |
1113 | sort = dapm_up_seq; | |
1114 | else | |
1115 | sort = dapm_down_seq; | |
1116 | ||
38357ab2 MB |
1117 | if (sort[a->id] != sort[b->id]) |
1118 | return sort[a->id] - sort[b->id]; | |
20e4859d MB |
1119 | if (a->subseq != b->subseq) { |
1120 | if (power_up) | |
1121 | return a->subseq - b->subseq; | |
1122 | else | |
1123 | return b->subseq - a->subseq; | |
1124 | } | |
b22ead2a MB |
1125 | if (a->reg != b->reg) |
1126 | return a->reg - b->reg; | |
84dab567 MB |
1127 | if (a->dapm != b->dapm) |
1128 | return (unsigned long)a->dapm - (unsigned long)b->dapm; | |
42aa3418 | 1129 | |
38357ab2 MB |
1130 | return 0; |
1131 | } | |
42aa3418 | 1132 | |
38357ab2 MB |
1133 | /* Insert a widget in order into a DAPM power sequence. */ |
1134 | static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget, | |
1135 | struct list_head *list, | |
828a842f | 1136 | bool power_up) |
38357ab2 MB |
1137 | { |
1138 | struct snd_soc_dapm_widget *w; | |
1139 | ||
1140 | list_for_each_entry(w, list, power_list) | |
828a842f | 1141 | if (dapm_seq_compare(new_widget, w, power_up) < 0) { |
38357ab2 MB |
1142 | list_add_tail(&new_widget->power_list, &w->power_list); |
1143 | return; | |
1144 | } | |
1145 | ||
1146 | list_add_tail(&new_widget->power_list, list); | |
1147 | } | |
1148 | ||
68f89ad8 MB |
1149 | static void dapm_seq_check_event(struct snd_soc_dapm_context *dapm, |
1150 | struct snd_soc_dapm_widget *w, int event) | |
1151 | { | |
1152 | struct snd_soc_card *card = dapm->card; | |
1153 | const char *ev_name; | |
1154 | int power, ret; | |
1155 | ||
1156 | switch (event) { | |
1157 | case SND_SOC_DAPM_PRE_PMU: | |
1158 | ev_name = "PRE_PMU"; | |
1159 | power = 1; | |
1160 | break; | |
1161 | case SND_SOC_DAPM_POST_PMU: | |
1162 | ev_name = "POST_PMU"; | |
1163 | power = 1; | |
1164 | break; | |
1165 | case SND_SOC_DAPM_PRE_PMD: | |
1166 | ev_name = "PRE_PMD"; | |
1167 | power = 0; | |
1168 | break; | |
1169 | case SND_SOC_DAPM_POST_PMD: | |
1170 | ev_name = "POST_PMD"; | |
1171 | power = 0; | |
1172 | break; | |
1173 | default: | |
1174 | BUG(); | |
1175 | return; | |
1176 | } | |
1177 | ||
1178 | if (w->power != power) | |
1179 | return; | |
1180 | ||
1181 | if (w->event && (w->event_flags & event)) { | |
1182 | pop_dbg(dapm->dev, card->pop_time, "pop test : %s %s\n", | |
1183 | w->name, ev_name); | |
84e90930 | 1184 | trace_snd_soc_dapm_widget_event_start(w, event); |
68f89ad8 | 1185 | ret = w->event(w, NULL, event); |
84e90930 | 1186 | trace_snd_soc_dapm_widget_event_done(w, event); |
68f89ad8 MB |
1187 | if (ret < 0) |
1188 | pr_err("%s: %s event failed: %d\n", | |
1189 | ev_name, w->name, ret); | |
1190 | } | |
1191 | } | |
1192 | ||
b22ead2a | 1193 | /* Apply the coalesced changes from a DAPM sequence */ |
ce6120cc | 1194 | static void dapm_seq_run_coalesced(struct snd_soc_dapm_context *dapm, |
b22ead2a | 1195 | struct list_head *pending) |
163cac06 | 1196 | { |
3a45b867 | 1197 | struct snd_soc_card *card = dapm->card; |
68f89ad8 MB |
1198 | struct snd_soc_dapm_widget *w; |
1199 | int reg, power; | |
b22ead2a MB |
1200 | unsigned int value = 0; |
1201 | unsigned int mask = 0; | |
1202 | unsigned int cur_mask; | |
1203 | ||
1204 | reg = list_first_entry(pending, struct snd_soc_dapm_widget, | |
1205 | power_list)->reg; | |
1206 | ||
1207 | list_for_each_entry(w, pending, power_list) { | |
1208 | cur_mask = 1 << w->shift; | |
1209 | BUG_ON(reg != w->reg); | |
1210 | ||
1211 | if (w->invert) | |
1212 | power = !w->power; | |
1213 | else | |
1214 | power = w->power; | |
1215 | ||
1216 | mask |= cur_mask; | |
1217 | if (power) | |
1218 | value |= cur_mask; | |
1219 | ||
fd8d3bc0 | 1220 | pop_dbg(dapm->dev, card->pop_time, |
b22ead2a MB |
1221 | "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n", |
1222 | w->name, reg, value, mask); | |
81628103 | 1223 | |
68f89ad8 MB |
1224 | /* Check for events */ |
1225 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMU); | |
1226 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMD); | |
81628103 MB |
1227 | } |
1228 | ||
1229 | if (reg >= 0) { | |
29376bc7 MB |
1230 | /* Any widget will do, they should all be updating the |
1231 | * same register. | |
1232 | */ | |
1233 | w = list_first_entry(pending, struct snd_soc_dapm_widget, | |
1234 | power_list); | |
1235 | ||
fd8d3bc0 | 1236 | pop_dbg(dapm->dev, card->pop_time, |
81628103 | 1237 | "pop test : Applying 0x%x/0x%x to %x in %dms\n", |
3a45b867 JN |
1238 | value, mask, reg, card->pop_time); |
1239 | pop_wait(card->pop_time); | |
49575fb5 | 1240 | soc_widget_update_bits_locked(w, reg, mask, value); |
b22ead2a MB |
1241 | } |
1242 | ||
81628103 | 1243 | list_for_each_entry(w, pending, power_list) { |
68f89ad8 MB |
1244 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMU); |
1245 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMD); | |
81628103 | 1246 | } |
b22ead2a | 1247 | } |
42aa3418 | 1248 | |
b22ead2a MB |
1249 | /* Apply a DAPM power sequence. |
1250 | * | |
1251 | * We walk over a pre-sorted list of widgets to apply power to. In | |
1252 | * order to minimise the number of writes to the device required | |
1253 | * multiple widgets will be updated in a single write where possible. | |
1254 | * Currently anything that requires more than a single write is not | |
1255 | * handled. | |
1256 | */ | |
ce6120cc | 1257 | static void dapm_seq_run(struct snd_soc_dapm_context *dapm, |
828a842f | 1258 | struct list_head *list, int event, bool power_up) |
b22ead2a MB |
1259 | { |
1260 | struct snd_soc_dapm_widget *w, *n; | |
1261 | LIST_HEAD(pending); | |
1262 | int cur_sort = -1; | |
20e4859d | 1263 | int cur_subseq = -1; |
b22ead2a | 1264 | int cur_reg = SND_SOC_NOPM; |
7be31be8 | 1265 | struct snd_soc_dapm_context *cur_dapm = NULL; |
474b62d6 | 1266 | int ret, i; |
828a842f MB |
1267 | int *sort; |
1268 | ||
1269 | if (power_up) | |
1270 | sort = dapm_up_seq; | |
1271 | else | |
1272 | sort = dapm_down_seq; | |
163cac06 | 1273 | |
b22ead2a MB |
1274 | list_for_each_entry_safe(w, n, list, power_list) { |
1275 | ret = 0; | |
1276 | ||
1277 | /* Do we need to apply any queued changes? */ | |
7be31be8 | 1278 | if (sort[w->id] != cur_sort || w->reg != cur_reg || |
20e4859d | 1279 | w->dapm != cur_dapm || w->subseq != cur_subseq) { |
b22ead2a | 1280 | if (!list_empty(&pending)) |
7be31be8 | 1281 | dapm_seq_run_coalesced(cur_dapm, &pending); |
b22ead2a | 1282 | |
474b62d6 MB |
1283 | if (cur_dapm && cur_dapm->seq_notifier) { |
1284 | for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++) | |
1285 | if (sort[i] == cur_sort) | |
1286 | cur_dapm->seq_notifier(cur_dapm, | |
f85a9e0d MB |
1287 | i, |
1288 | cur_subseq); | |
474b62d6 MB |
1289 | } |
1290 | ||
b22ead2a MB |
1291 | INIT_LIST_HEAD(&pending); |
1292 | cur_sort = -1; | |
b0b3e6f8 | 1293 | cur_subseq = INT_MIN; |
b22ead2a | 1294 | cur_reg = SND_SOC_NOPM; |
7be31be8 | 1295 | cur_dapm = NULL; |
b22ead2a MB |
1296 | } |
1297 | ||
163cac06 MB |
1298 | switch (w->id) { |
1299 | case snd_soc_dapm_pre: | |
1300 | if (!w->event) | |
b22ead2a MB |
1301 | list_for_each_entry_safe_continue(w, n, list, |
1302 | power_list); | |
163cac06 | 1303 | |
b22ead2a | 1304 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
1305 | ret = w->event(w, |
1306 | NULL, SND_SOC_DAPM_PRE_PMU); | |
b22ead2a | 1307 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
1308 | ret = w->event(w, |
1309 | NULL, SND_SOC_DAPM_PRE_PMD); | |
163cac06 MB |
1310 | break; |
1311 | ||
1312 | case snd_soc_dapm_post: | |
1313 | if (!w->event) | |
b22ead2a MB |
1314 | list_for_each_entry_safe_continue(w, n, list, |
1315 | power_list); | |
163cac06 | 1316 | |
b22ead2a | 1317 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
1318 | ret = w->event(w, |
1319 | NULL, SND_SOC_DAPM_POST_PMU); | |
b22ead2a | 1320 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
1321 | ret = w->event(w, |
1322 | NULL, SND_SOC_DAPM_POST_PMD); | |
163cac06 MB |
1323 | break; |
1324 | ||
b22ead2a | 1325 | default: |
81628103 MB |
1326 | /* Queue it up for application */ |
1327 | cur_sort = sort[w->id]; | |
20e4859d | 1328 | cur_subseq = w->subseq; |
81628103 | 1329 | cur_reg = w->reg; |
7be31be8 | 1330 | cur_dapm = w->dapm; |
81628103 MB |
1331 | list_move(&w->power_list, &pending); |
1332 | break; | |
163cac06 | 1333 | } |
b22ead2a MB |
1334 | |
1335 | if (ret < 0) | |
f7d41ae8 JN |
1336 | dev_err(w->dapm->dev, |
1337 | "Failed to apply widget power: %d\n", ret); | |
6ea31b9f | 1338 | } |
b22ead2a MB |
1339 | |
1340 | if (!list_empty(&pending)) | |
28e86808 | 1341 | dapm_seq_run_coalesced(cur_dapm, &pending); |
474b62d6 MB |
1342 | |
1343 | if (cur_dapm && cur_dapm->seq_notifier) { | |
1344 | for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++) | |
1345 | if (sort[i] == cur_sort) | |
1346 | cur_dapm->seq_notifier(cur_dapm, | |
f85a9e0d | 1347 | i, cur_subseq); |
474b62d6 | 1348 | } |
42aa3418 MB |
1349 | } |
1350 | ||
97404f2e MB |
1351 | static void dapm_widget_update(struct snd_soc_dapm_context *dapm) |
1352 | { | |
1353 | struct snd_soc_dapm_update *update = dapm->update; | |
1354 | struct snd_soc_dapm_widget *w; | |
1355 | int ret; | |
1356 | ||
1357 | if (!update) | |
1358 | return; | |
1359 | ||
1360 | w = update->widget; | |
1361 | ||
1362 | if (w->event && | |
1363 | (w->event_flags & SND_SOC_DAPM_PRE_REG)) { | |
1364 | ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG); | |
1365 | if (ret != 0) | |
1366 | pr_err("%s DAPM pre-event failed: %d\n", | |
1367 | w->name, ret); | |
1368 | } | |
1369 | ||
49575fb5 | 1370 | ret = soc_widget_update_bits_locked(w, update->reg, update->mask, |
97404f2e MB |
1371 | update->val); |
1372 | if (ret < 0) | |
1373 | pr_err("%s DAPM update failed: %d\n", w->name, ret); | |
1374 | ||
1375 | if (w->event && | |
1376 | (w->event_flags & SND_SOC_DAPM_POST_REG)) { | |
1377 | ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG); | |
1378 | if (ret != 0) | |
1379 | pr_err("%s DAPM post-event failed: %d\n", | |
1380 | w->name, ret); | |
1381 | } | |
1382 | } | |
1383 | ||
9d0624a7 MB |
1384 | /* Async callback run prior to DAPM sequences - brings to _PREPARE if |
1385 | * they're changing state. | |
1386 | */ | |
1387 | static void dapm_pre_sequence_async(void *data, async_cookie_t cookie) | |
1388 | { | |
1389 | struct snd_soc_dapm_context *d = data; | |
1390 | int ret; | |
1391 | ||
56fba41f MB |
1392 | /* If we're off and we're not supposed to be go into STANDBY */ |
1393 | if (d->bias_level == SND_SOC_BIAS_OFF && | |
1394 | d->target_bias_level != SND_SOC_BIAS_OFF) { | |
f1aac484 MB |
1395 | if (d->dev) |
1396 | pm_runtime_get_sync(d->dev); | |
1397 | ||
9d0624a7 MB |
1398 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY); |
1399 | if (ret != 0) | |
1400 | dev_err(d->dev, | |
1401 | "Failed to turn on bias: %d\n", ret); | |
1402 | } | |
1403 | ||
56fba41f MB |
1404 | /* Prepare for a STADDBY->ON or ON->STANDBY transition */ |
1405 | if (d->bias_level != d->target_bias_level) { | |
9d0624a7 MB |
1406 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE); |
1407 | if (ret != 0) | |
1408 | dev_err(d->dev, | |
1409 | "Failed to prepare bias: %d\n", ret); | |
1410 | } | |
1411 | } | |
1412 | ||
1413 | /* Async callback run prior to DAPM sequences - brings to their final | |
1414 | * state. | |
1415 | */ | |
1416 | static void dapm_post_sequence_async(void *data, async_cookie_t cookie) | |
1417 | { | |
1418 | struct snd_soc_dapm_context *d = data; | |
1419 | int ret; | |
1420 | ||
1421 | /* If we just powered the last thing off drop to standby bias */ | |
56fba41f MB |
1422 | if (d->bias_level == SND_SOC_BIAS_PREPARE && |
1423 | (d->target_bias_level == SND_SOC_BIAS_STANDBY || | |
1424 | d->target_bias_level == SND_SOC_BIAS_OFF)) { | |
9d0624a7 MB |
1425 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY); |
1426 | if (ret != 0) | |
1427 | dev_err(d->dev, "Failed to apply standby bias: %d\n", | |
1428 | ret); | |
1429 | } | |
97404f2e | 1430 | |
9d0624a7 | 1431 | /* If we're in standby and can support bias off then do that */ |
56fba41f MB |
1432 | if (d->bias_level == SND_SOC_BIAS_STANDBY && |
1433 | d->target_bias_level == SND_SOC_BIAS_OFF) { | |
9d0624a7 MB |
1434 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF); |
1435 | if (ret != 0) | |
1436 | dev_err(d->dev, "Failed to turn off bias: %d\n", ret); | |
f1aac484 MB |
1437 | |
1438 | if (d->dev) | |
fb644e9c | 1439 | pm_runtime_put(d->dev); |
9d0624a7 MB |
1440 | } |
1441 | ||
1442 | /* If we just powered up then move to active bias */ | |
56fba41f MB |
1443 | if (d->bias_level == SND_SOC_BIAS_PREPARE && |
1444 | d->target_bias_level == SND_SOC_BIAS_ON) { | |
9d0624a7 MB |
1445 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON); |
1446 | if (ret != 0) | |
1447 | dev_err(d->dev, "Failed to apply active bias: %d\n", | |
1448 | ret); | |
1449 | } | |
1450 | } | |
97404f2e | 1451 | |
fe4fda5d MB |
1452 | static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget *peer, |
1453 | bool power, bool connect) | |
1454 | { | |
1455 | /* If a connection is being made or broken then that update | |
1456 | * will have marked the peer dirty, otherwise the widgets are | |
1457 | * not connected and this update has no impact. */ | |
1458 | if (!connect) | |
1459 | return; | |
1460 | ||
1461 | /* If the peer is already in the state we're moving to then we | |
1462 | * won't have an impact on it. */ | |
1463 | if (power != peer->power) | |
75c1f891 | 1464 | dapm_mark_dirty(peer, "peer state change"); |
fe4fda5d MB |
1465 | } |
1466 | ||
05623c43 MB |
1467 | static void dapm_widget_set_power(struct snd_soc_dapm_widget *w, bool power, |
1468 | struct list_head *up_list, | |
1469 | struct list_head *down_list) | |
1470 | { | |
db432b41 MB |
1471 | struct snd_soc_dapm_path *path; |
1472 | ||
05623c43 MB |
1473 | if (w->power == power) |
1474 | return; | |
1475 | ||
1476 | trace_snd_soc_dapm_widget_power(w, power); | |
1477 | ||
db432b41 | 1478 | /* If we changed our power state perhaps our neigbours changed |
fe4fda5d | 1479 | * also. |
db432b41 MB |
1480 | */ |
1481 | list_for_each_entry(path, &w->sources, list_sink) { | |
1482 | if (path->source) { | |
fe4fda5d MB |
1483 | dapm_widget_set_peer_power(path->source, power, |
1484 | path->connect); | |
db432b41 MB |
1485 | } |
1486 | } | |
f3bf3e45 MB |
1487 | switch (w->id) { |
1488 | case snd_soc_dapm_supply: | |
62ea874a | 1489 | case snd_soc_dapm_regulator_supply: |
f3bf3e45 MB |
1490 | /* Supplies can't affect their outputs, only their inputs */ |
1491 | break; | |
1492 | default: | |
1493 | list_for_each_entry(path, &w->sinks, list_source) { | |
1494 | if (path->sink) { | |
1495 | dapm_widget_set_peer_power(path->sink, power, | |
1496 | path->connect); | |
1497 | } | |
db432b41 | 1498 | } |
f3bf3e45 | 1499 | break; |
db432b41 MB |
1500 | } |
1501 | ||
05623c43 MB |
1502 | if (power) |
1503 | dapm_seq_insert(w, up_list, true); | |
1504 | else | |
1505 | dapm_seq_insert(w, down_list, false); | |
1506 | ||
1507 | w->power = power; | |
1508 | } | |
1509 | ||
7c81beb0 MB |
1510 | static void dapm_power_one_widget(struct snd_soc_dapm_widget *w, |
1511 | struct list_head *up_list, | |
1512 | struct list_head *down_list) | |
1513 | { | |
7c81beb0 MB |
1514 | int power; |
1515 | ||
1516 | switch (w->id) { | |
1517 | case snd_soc_dapm_pre: | |
1518 | dapm_seq_insert(w, down_list, false); | |
1519 | break; | |
1520 | case snd_soc_dapm_post: | |
1521 | dapm_seq_insert(w, up_list, true); | |
1522 | break; | |
1523 | ||
1524 | default: | |
d805002b | 1525 | power = dapm_widget_power_check(w); |
7c81beb0 | 1526 | |
05623c43 | 1527 | dapm_widget_set_power(w, power, up_list, down_list); |
7c81beb0 MB |
1528 | break; |
1529 | } | |
1530 | } | |
1531 | ||
2b97eabc RP |
1532 | /* |
1533 | * Scan each dapm widget for complete audio path. | |
1534 | * A complete path is a route that has valid endpoints i.e.:- | |
1535 | * | |
1536 | * o DAC to output pin. | |
1537 | * o Input Pin to ADC. | |
1538 | * o Input pin to Output pin (bypass, sidetone) | |
1539 | * o DAC to ADC (loopback). | |
1540 | */ | |
ce6120cc | 1541 | static int dapm_power_widgets(struct snd_soc_dapm_context *dapm, int event) |
2b97eabc | 1542 | { |
12ea2c78 | 1543 | struct snd_soc_card *card = dapm->card; |
2b97eabc | 1544 | struct snd_soc_dapm_widget *w; |
7be31be8 | 1545 | struct snd_soc_dapm_context *d; |
291f3bbc MB |
1546 | LIST_HEAD(up_list); |
1547 | LIST_HEAD(down_list); | |
9d0624a7 | 1548 | LIST_HEAD(async_domain); |
56fba41f | 1549 | enum snd_soc_bias_level bias; |
6d3ddc81 | 1550 | |
84e90930 MB |
1551 | trace_snd_soc_dapm_start(card); |
1552 | ||
56fba41f | 1553 | list_for_each_entry(d, &card->dapm_list, list) { |
497098be MB |
1554 | if (d->idle_bias_off) |
1555 | d->target_bias_level = SND_SOC_BIAS_OFF; | |
1556 | else | |
1557 | d->target_bias_level = SND_SOC_BIAS_STANDBY; | |
56fba41f | 1558 | } |
7be31be8 | 1559 | |
6c120e19 | 1560 | dapm_reset(card); |
9b8a83b2 | 1561 | |
6d3ddc81 | 1562 | /* Check which widgets we need to power and store them in |
db432b41 MB |
1563 | * lists indicating if they should be powered up or down. We |
1564 | * only check widgets that have been flagged as dirty but note | |
1565 | * that new widgets may be added to the dirty list while we | |
1566 | * iterate. | |
6d3ddc81 | 1567 | */ |
db432b41 | 1568 | list_for_each_entry(w, &card->dapm_dirty, dirty) { |
7c81beb0 | 1569 | dapm_power_one_widget(w, &up_list, &down_list); |
2b97eabc RP |
1570 | } |
1571 | ||
f9de6d74 | 1572 | list_for_each_entry(w, &card->widgets, list) { |
db432b41 MB |
1573 | list_del_init(&w->dirty); |
1574 | ||
f9de6d74 MB |
1575 | if (w->power) { |
1576 | d = w->dapm; | |
1577 | ||
1578 | /* Supplies and micbiases only bring the | |
1579 | * context up to STANDBY as unless something | |
1580 | * else is active and passing audio they | |
afe62367 MB |
1581 | * generally don't require full power. Signal |
1582 | * generators are virtual pins and have no | |
1583 | * power impact themselves. | |
f9de6d74 MB |
1584 | */ |
1585 | switch (w->id) { | |
afe62367 MB |
1586 | case snd_soc_dapm_siggen: |
1587 | break; | |
f9de6d74 | 1588 | case snd_soc_dapm_supply: |
62ea874a | 1589 | case snd_soc_dapm_regulator_supply: |
f9de6d74 MB |
1590 | case snd_soc_dapm_micbias: |
1591 | if (d->target_bias_level < SND_SOC_BIAS_STANDBY) | |
1592 | d->target_bias_level = SND_SOC_BIAS_STANDBY; | |
1593 | break; | |
1594 | default: | |
1595 | d->target_bias_level = SND_SOC_BIAS_ON; | |
1596 | break; | |
1597 | } | |
1598 | } | |
1599 | ||
1600 | } | |
1601 | ||
85a843c5 MB |
1602 | /* Force all contexts in the card to the same bias state if |
1603 | * they're not ground referenced. | |
1604 | */ | |
56fba41f | 1605 | bias = SND_SOC_BIAS_OFF; |
52ba67bf | 1606 | list_for_each_entry(d, &card->dapm_list, list) |
56fba41f MB |
1607 | if (d->target_bias_level > bias) |
1608 | bias = d->target_bias_level; | |
52ba67bf | 1609 | list_for_each_entry(d, &card->dapm_list, list) |
85a843c5 MB |
1610 | if (!d->idle_bias_off) |
1611 | d->target_bias_level = bias; | |
52ba67bf | 1612 | |
de02d078 | 1613 | trace_snd_soc_dapm_walk_done(card); |
52ba67bf | 1614 | |
9d0624a7 MB |
1615 | /* Run all the bias changes in parallel */ |
1616 | list_for_each_entry(d, &dapm->card->dapm_list, list) | |
1617 | async_schedule_domain(dapm_pre_sequence_async, d, | |
1618 | &async_domain); | |
1619 | async_synchronize_full_domain(&async_domain); | |
452c5eaa | 1620 | |
6d3ddc81 | 1621 | /* Power down widgets first; try to avoid amplifying pops. */ |
828a842f | 1622 | dapm_seq_run(dapm, &down_list, event, false); |
2b97eabc | 1623 | |
97404f2e MB |
1624 | dapm_widget_update(dapm); |
1625 | ||
6d3ddc81 | 1626 | /* Now power up. */ |
828a842f | 1627 | dapm_seq_run(dapm, &up_list, event, true); |
2b97eabc | 1628 | |
9d0624a7 MB |
1629 | /* Run all the bias changes in parallel */ |
1630 | list_for_each_entry(d, &dapm->card->dapm_list, list) | |
1631 | async_schedule_domain(dapm_post_sequence_async, d, | |
1632 | &async_domain); | |
1633 | async_synchronize_full_domain(&async_domain); | |
452c5eaa | 1634 | |
8078d87f LG |
1635 | /* do we need to notify any clients that DAPM event is complete */ |
1636 | list_for_each_entry(d, &card->dapm_list, list) { | |
1637 | if (d->stream_event) | |
1638 | d->stream_event(d, event); | |
1639 | } | |
1640 | ||
fd8d3bc0 JN |
1641 | pop_dbg(dapm->dev, card->pop_time, |
1642 | "DAPM sequencing finished, waiting %dms\n", card->pop_time); | |
3a45b867 | 1643 | pop_wait(card->pop_time); |
cb507e7e | 1644 | |
84e90930 MB |
1645 | trace_snd_soc_dapm_done(card); |
1646 | ||
42aa3418 | 1647 | return 0; |
2b97eabc RP |
1648 | } |
1649 | ||
79fb9387 | 1650 | #ifdef CONFIG_DEBUG_FS |
79fb9387 MB |
1651 | static ssize_t dapm_widget_power_read_file(struct file *file, |
1652 | char __user *user_buf, | |
1653 | size_t count, loff_t *ppos) | |
1654 | { | |
1655 | struct snd_soc_dapm_widget *w = file->private_data; | |
1656 | char *buf; | |
1657 | int in, out; | |
1658 | ssize_t ret; | |
1659 | struct snd_soc_dapm_path *p = NULL; | |
1660 | ||
1661 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); | |
1662 | if (!buf) | |
1663 | return -ENOMEM; | |
1664 | ||
ec2e3031 | 1665 | in = is_connected_input_ep(w, NULL); |
ce6120cc | 1666 | dapm_clear_walk(w->dapm); |
ec2e3031 | 1667 | out = is_connected_output_ep(w, NULL); |
ce6120cc | 1668 | dapm_clear_walk(w->dapm); |
79fb9387 | 1669 | |
f13ebada MB |
1670 | ret = snprintf(buf, PAGE_SIZE, "%s: %s%s in %d out %d", |
1671 | w->name, w->power ? "On" : "Off", | |
1672 | w->force ? " (forced)" : "", in, out); | |
79fb9387 | 1673 | |
d033c36a MB |
1674 | if (w->reg >= 0) |
1675 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
1676 | " - R%d(0x%x) bit %d", | |
1677 | w->reg, w->reg, w->shift); | |
1678 | ||
1679 | ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n"); | |
1680 | ||
3eef08ba MB |
1681 | if (w->sname) |
1682 | ret += snprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n", | |
1683 | w->sname, | |
1684 | w->active ? "active" : "inactive"); | |
79fb9387 MB |
1685 | |
1686 | list_for_each_entry(p, &w->sources, list_sink) { | |
215edda3 MB |
1687 | if (p->connected && !p->connected(w, p->sink)) |
1688 | continue; | |
1689 | ||
79fb9387 MB |
1690 | if (p->connect) |
1691 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
67f5ed6e | 1692 | " in \"%s\" \"%s\"\n", |
79fb9387 MB |
1693 | p->name ? p->name : "static", |
1694 | p->source->name); | |
1695 | } | |
1696 | list_for_each_entry(p, &w->sinks, list_source) { | |
215edda3 MB |
1697 | if (p->connected && !p->connected(w, p->sink)) |
1698 | continue; | |
1699 | ||
79fb9387 MB |
1700 | if (p->connect) |
1701 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
67f5ed6e | 1702 | " out \"%s\" \"%s\"\n", |
79fb9387 MB |
1703 | p->name ? p->name : "static", |
1704 | p->sink->name); | |
1705 | } | |
1706 | ||
1707 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); | |
1708 | ||
1709 | kfree(buf); | |
1710 | return ret; | |
1711 | } | |
1712 | ||
1713 | static const struct file_operations dapm_widget_power_fops = { | |
234e3405 | 1714 | .open = simple_open, |
79fb9387 | 1715 | .read = dapm_widget_power_read_file, |
6038f373 | 1716 | .llseek = default_llseek, |
79fb9387 MB |
1717 | }; |
1718 | ||
ef49e4fa MB |
1719 | static ssize_t dapm_bias_read_file(struct file *file, char __user *user_buf, |
1720 | size_t count, loff_t *ppos) | |
1721 | { | |
1722 | struct snd_soc_dapm_context *dapm = file->private_data; | |
1723 | char *level; | |
1724 | ||
1725 | switch (dapm->bias_level) { | |
1726 | case SND_SOC_BIAS_ON: | |
1727 | level = "On\n"; | |
1728 | break; | |
1729 | case SND_SOC_BIAS_PREPARE: | |
1730 | level = "Prepare\n"; | |
1731 | break; | |
1732 | case SND_SOC_BIAS_STANDBY: | |
1733 | level = "Standby\n"; | |
1734 | break; | |
1735 | case SND_SOC_BIAS_OFF: | |
1736 | level = "Off\n"; | |
1737 | break; | |
1738 | default: | |
1739 | BUG(); | |
1740 | level = "Unknown\n"; | |
1741 | break; | |
1742 | } | |
1743 | ||
1744 | return simple_read_from_buffer(user_buf, count, ppos, level, | |
1745 | strlen(level)); | |
1746 | } | |
1747 | ||
1748 | static const struct file_operations dapm_bias_fops = { | |
234e3405 | 1749 | .open = simple_open, |
ef49e4fa MB |
1750 | .read = dapm_bias_read_file, |
1751 | .llseek = default_llseek, | |
1752 | }; | |
1753 | ||
8eecaf62 LPC |
1754 | void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm, |
1755 | struct dentry *parent) | |
79fb9387 | 1756 | { |
79fb9387 MB |
1757 | struct dentry *d; |
1758 | ||
8eecaf62 LPC |
1759 | dapm->debugfs_dapm = debugfs_create_dir("dapm", parent); |
1760 | ||
1761 | if (!dapm->debugfs_dapm) { | |
f1e90af2 | 1762 | dev_warn(dapm->dev, |
8eecaf62 | 1763 | "Failed to create DAPM debugfs directory\n"); |
79fb9387 | 1764 | return; |
8eecaf62 | 1765 | } |
79fb9387 | 1766 | |
ef49e4fa MB |
1767 | d = debugfs_create_file("bias_level", 0444, |
1768 | dapm->debugfs_dapm, dapm, | |
1769 | &dapm_bias_fops); | |
1770 | if (!d) | |
1771 | dev_warn(dapm->dev, | |
1772 | "ASoC: Failed to create bias level debugfs file\n"); | |
d5d1e0be | 1773 | } |
ef49e4fa | 1774 | |
d5d1e0be LPC |
1775 | static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w) |
1776 | { | |
1777 | struct snd_soc_dapm_context *dapm = w->dapm; | |
1778 | struct dentry *d; | |
79fb9387 | 1779 | |
d5d1e0be LPC |
1780 | if (!dapm->debugfs_dapm || !w->name) |
1781 | return; | |
1782 | ||
1783 | d = debugfs_create_file(w->name, 0444, | |
1784 | dapm->debugfs_dapm, w, | |
1785 | &dapm_widget_power_fops); | |
1786 | if (!d) | |
1787 | dev_warn(w->dapm->dev, | |
1788 | "ASoC: Failed to create %s debugfs file\n", | |
1789 | w->name); | |
79fb9387 | 1790 | } |
d5d1e0be | 1791 | |
6c45e126 LPC |
1792 | static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm) |
1793 | { | |
1794 | debugfs_remove_recursive(dapm->debugfs_dapm); | |
1795 | } | |
1796 | ||
79fb9387 | 1797 | #else |
8eecaf62 LPC |
1798 | void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm, |
1799 | struct dentry *parent) | |
79fb9387 MB |
1800 | { |
1801 | } | |
d5d1e0be LPC |
1802 | |
1803 | static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w) | |
1804 | { | |
1805 | } | |
1806 | ||
6c45e126 LPC |
1807 | static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm) |
1808 | { | |
1809 | } | |
1810 | ||
79fb9387 MB |
1811 | #endif |
1812 | ||
2b97eabc | 1813 | /* test and update the power status of a mux widget */ |
4edbb345 | 1814 | static int soc_dapm_mux_update_power(struct snd_soc_dapm_widget *widget, |
40f02cd9 | 1815 | struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e) |
2b97eabc RP |
1816 | { |
1817 | struct snd_soc_dapm_path *path; | |
1818 | int found = 0; | |
1819 | ||
eff317d0 | 1820 | if (widget->id != snd_soc_dapm_mux && |
24ff33ac | 1821 | widget->id != snd_soc_dapm_virt_mux && |
eff317d0 | 1822 | widget->id != snd_soc_dapm_value_mux) |
2b97eabc RP |
1823 | return -ENODEV; |
1824 | ||
2b97eabc | 1825 | /* find dapm widget path assoc with kcontrol */ |
8ddab3f5 | 1826 | list_for_each_entry(path, &widget->dapm->card->paths, list) { |
2b97eabc RP |
1827 | if (path->kcontrol != kcontrol) |
1828 | continue; | |
1829 | ||
cb01e2b9 | 1830 | if (!path->name || !e->texts[mux]) |
2b97eabc RP |
1831 | continue; |
1832 | ||
1833 | found = 1; | |
1834 | /* we now need to match the string in the enum to the path */ | |
db432b41 | 1835 | if (!(strcmp(path->name, e->texts[mux]))) { |
2b97eabc | 1836 | path->connect = 1; /* new connection */ |
75c1f891 | 1837 | dapm_mark_dirty(path->source, "mux connection"); |
db432b41 MB |
1838 | } else { |
1839 | if (path->connect) | |
75c1f891 MB |
1840 | dapm_mark_dirty(path->source, |
1841 | "mux disconnection"); | |
2b97eabc | 1842 | path->connect = 0; /* old connection must be powered down */ |
db432b41 | 1843 | } |
2b97eabc RP |
1844 | } |
1845 | ||
db432b41 | 1846 | if (found) { |
75c1f891 | 1847 | dapm_mark_dirty(widget, "mux change"); |
ce6120cc | 1848 | dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP); |
db432b41 | 1849 | } |
2b97eabc | 1850 | |
618dae11 | 1851 | return found; |
2b97eabc | 1852 | } |
4edbb345 LG |
1853 | |
1854 | int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_widget *widget, | |
1855 | struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e) | |
1856 | { | |
1857 | struct snd_soc_card *card = widget->dapm->card; | |
1858 | int ret; | |
1859 | ||
3cd04343 | 1860 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
4edbb345 LG |
1861 | ret = soc_dapm_mux_update_power(widget, kcontrol, mux, e); |
1862 | mutex_unlock(&card->dapm_mutex); | |
618dae11 LG |
1863 | if (ret > 0) |
1864 | soc_dpcm_runtime_update(widget); | |
4edbb345 LG |
1865 | return ret; |
1866 | } | |
40f02cd9 | 1867 | EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power); |
2b97eabc | 1868 | |
1b075e3f | 1869 | /* test and update the power status of a mixer or switch widget */ |
4edbb345 | 1870 | static int soc_dapm_mixer_update_power(struct snd_soc_dapm_widget *widget, |
283375ce | 1871 | struct snd_kcontrol *kcontrol, int connect) |
2b97eabc RP |
1872 | { |
1873 | struct snd_soc_dapm_path *path; | |
1874 | int found = 0; | |
1875 | ||
1b075e3f | 1876 | if (widget->id != snd_soc_dapm_mixer && |
ca9c1aae | 1877 | widget->id != snd_soc_dapm_mixer_named_ctl && |
1b075e3f | 1878 | widget->id != snd_soc_dapm_switch) |
2b97eabc RP |
1879 | return -ENODEV; |
1880 | ||
2b97eabc | 1881 | /* find dapm widget path assoc with kcontrol */ |
8ddab3f5 | 1882 | list_for_each_entry(path, &widget->dapm->card->paths, list) { |
2b97eabc RP |
1883 | if (path->kcontrol != kcontrol) |
1884 | continue; | |
1885 | ||
1886 | /* found, now check type */ | |
1887 | found = 1; | |
283375ce | 1888 | path->connect = connect; |
75c1f891 | 1889 | dapm_mark_dirty(path->source, "mixer connection"); |
2b97eabc RP |
1890 | } |
1891 | ||
db432b41 | 1892 | if (found) { |
75c1f891 | 1893 | dapm_mark_dirty(widget, "mixer update"); |
ce6120cc | 1894 | dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP); |
db432b41 | 1895 | } |
2b97eabc | 1896 | |
618dae11 | 1897 | return found; |
2b97eabc | 1898 | } |
4edbb345 LG |
1899 | |
1900 | int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_widget *widget, | |
1901 | struct snd_kcontrol *kcontrol, int connect) | |
1902 | { | |
1903 | struct snd_soc_card *card = widget->dapm->card; | |
1904 | int ret; | |
1905 | ||
3cd04343 | 1906 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
4edbb345 LG |
1907 | ret = soc_dapm_mixer_update_power(widget, kcontrol, connect); |
1908 | mutex_unlock(&card->dapm_mutex); | |
618dae11 LG |
1909 | if (ret > 0) |
1910 | soc_dpcm_runtime_update(widget); | |
4edbb345 LG |
1911 | return ret; |
1912 | } | |
40f02cd9 | 1913 | EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power); |
2b97eabc RP |
1914 | |
1915 | /* show dapm widget status in sys fs */ | |
1916 | static ssize_t dapm_widget_show(struct device *dev, | |
1917 | struct device_attribute *attr, char *buf) | |
1918 | { | |
36ae1a96 | 1919 | struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev); |
f0fba2ad | 1920 | struct snd_soc_codec *codec =rtd->codec; |
2b97eabc RP |
1921 | struct snd_soc_dapm_widget *w; |
1922 | int count = 0; | |
1923 | char *state = "not set"; | |
1924 | ||
97c866de JN |
1925 | list_for_each_entry(w, &codec->card->widgets, list) { |
1926 | if (w->dapm != &codec->dapm) | |
1927 | continue; | |
2b97eabc RP |
1928 | |
1929 | /* only display widgets that burnm power */ | |
1930 | switch (w->id) { | |
1931 | case snd_soc_dapm_hp: | |
1932 | case snd_soc_dapm_mic: | |
1933 | case snd_soc_dapm_spk: | |
1934 | case snd_soc_dapm_line: | |
1935 | case snd_soc_dapm_micbias: | |
1936 | case snd_soc_dapm_dac: | |
1937 | case snd_soc_dapm_adc: | |
1938 | case snd_soc_dapm_pga: | |
d88429a6 | 1939 | case snd_soc_dapm_out_drv: |
2b97eabc | 1940 | case snd_soc_dapm_mixer: |
ca9c1aae | 1941 | case snd_soc_dapm_mixer_named_ctl: |
246d0a17 | 1942 | case snd_soc_dapm_supply: |
62ea874a | 1943 | case snd_soc_dapm_regulator_supply: |
2b97eabc RP |
1944 | if (w->name) |
1945 | count += sprintf(buf + count, "%s: %s\n", | |
1946 | w->name, w->power ? "On":"Off"); | |
1947 | break; | |
1948 | default: | |
1949 | break; | |
1950 | } | |
1951 | } | |
1952 | ||
ce6120cc | 1953 | switch (codec->dapm.bias_level) { |
0be9898a MB |
1954 | case SND_SOC_BIAS_ON: |
1955 | state = "On"; | |
2b97eabc | 1956 | break; |
0be9898a MB |
1957 | case SND_SOC_BIAS_PREPARE: |
1958 | state = "Prepare"; | |
2b97eabc | 1959 | break; |
0be9898a MB |
1960 | case SND_SOC_BIAS_STANDBY: |
1961 | state = "Standby"; | |
2b97eabc | 1962 | break; |
0be9898a MB |
1963 | case SND_SOC_BIAS_OFF: |
1964 | state = "Off"; | |
2b97eabc RP |
1965 | break; |
1966 | } | |
1967 | count += sprintf(buf + count, "PM State: %s\n", state); | |
1968 | ||
1969 | return count; | |
1970 | } | |
1971 | ||
1972 | static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL); | |
1973 | ||
1974 | int snd_soc_dapm_sys_add(struct device *dev) | |
1975 | { | |
12ef193d | 1976 | return device_create_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1977 | } |
1978 | ||
1979 | static void snd_soc_dapm_sys_remove(struct device *dev) | |
1980 | { | |
aef90843 | 1981 | device_remove_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1982 | } |
1983 | ||
1984 | /* free all dapm widgets and resources */ | |
ce6120cc | 1985 | static void dapm_free_widgets(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
1986 | { |
1987 | struct snd_soc_dapm_widget *w, *next_w; | |
1988 | struct snd_soc_dapm_path *p, *next_p; | |
1989 | ||
97c866de JN |
1990 | list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) { |
1991 | if (w->dapm != dapm) | |
1992 | continue; | |
2b97eabc | 1993 | list_del(&w->list); |
8ddab3f5 JN |
1994 | /* |
1995 | * remove source and sink paths associated to this widget. | |
1996 | * While removing the path, remove reference to it from both | |
1997 | * source and sink widgets so that path is removed only once. | |
1998 | */ | |
1999 | list_for_each_entry_safe(p, next_p, &w->sources, list_sink) { | |
2000 | list_del(&p->list_sink); | |
2001 | list_del(&p->list_source); | |
2002 | list_del(&p->list); | |
2003 | kfree(p->long_name); | |
2004 | kfree(p); | |
2005 | } | |
2006 | list_for_each_entry_safe(p, next_p, &w->sinks, list_source) { | |
2007 | list_del(&p->list_sink); | |
2008 | list_del(&p->list_source); | |
2009 | list_del(&p->list); | |
2010 | kfree(p->long_name); | |
2011 | kfree(p); | |
2012 | } | |
fad59888 | 2013 | kfree(w->kcontrols); |
ead9b919 | 2014 | kfree(w->name); |
2b97eabc RP |
2015 | kfree(w); |
2016 | } | |
2b97eabc RP |
2017 | } |
2018 | ||
91a5fca4 LPC |
2019 | static struct snd_soc_dapm_widget *dapm_find_widget( |
2020 | struct snd_soc_dapm_context *dapm, const char *pin, | |
2021 | bool search_other_contexts) | |
a5302181 LG |
2022 | { |
2023 | struct snd_soc_dapm_widget *w; | |
91a5fca4 | 2024 | struct snd_soc_dapm_widget *fallback = NULL; |
a5302181 | 2025 | |
97c866de | 2026 | list_for_each_entry(w, &dapm->card->widgets, list) { |
a5302181 | 2027 | if (!strcmp(w->name, pin)) { |
91a5fca4 LPC |
2028 | if (w->dapm == dapm) |
2029 | return w; | |
2030 | else | |
2031 | fallback = w; | |
a5302181 LG |
2032 | } |
2033 | } | |
2034 | ||
91a5fca4 LPC |
2035 | if (search_other_contexts) |
2036 | return fallback; | |
2037 | ||
2038 | return NULL; | |
2039 | } | |
2040 | ||
2041 | static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm, | |
2042 | const char *pin, int status) | |
2043 | { | |
2044 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); | |
2045 | ||
2046 | if (!w) { | |
2047 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); | |
2048 | return -EINVAL; | |
0d86733c MB |
2049 | } |
2050 | ||
1a8b2d9d MB |
2051 | if (w->connected != status) |
2052 | dapm_mark_dirty(w, "pin configuration"); | |
2053 | ||
91a5fca4 LPC |
2054 | w->connected = status; |
2055 | if (status == 0) | |
2056 | w->force = 0; | |
2057 | ||
2058 | return 0; | |
a5302181 LG |
2059 | } |
2060 | ||
2b97eabc | 2061 | /** |
a5302181 | 2062 | * snd_soc_dapm_sync - scan and power dapm paths |
ce6120cc | 2063 | * @dapm: DAPM context |
2b97eabc RP |
2064 | * |
2065 | * Walks all dapm audio paths and powers widgets according to their | |
2066 | * stream or path usage. | |
2067 | * | |
2068 | * Returns 0 for success. | |
2069 | */ | |
ce6120cc | 2070 | int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm) |
2b97eabc | 2071 | { |
a73fb2df LG |
2072 | int ret; |
2073 | ||
4f4c0072 MB |
2074 | /* |
2075 | * Suppress early reports (eg, jacks syncing their state) to avoid | |
2076 | * silly DAPM runs during card startup. | |
2077 | */ | |
2078 | if (!dapm->card || !dapm->card->instantiated) | |
2079 | return 0; | |
2080 | ||
3cd04343 | 2081 | mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
a73fb2df LG |
2082 | ret = dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP); |
2083 | mutex_unlock(&dapm->card->dapm_mutex); | |
2084 | return ret; | |
2b97eabc | 2085 | } |
a5302181 | 2086 | EXPORT_SYMBOL_GPL(snd_soc_dapm_sync); |
2b97eabc | 2087 | |
ce6120cc | 2088 | static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm, |
215edda3 | 2089 | const struct snd_soc_dapm_route *route) |
2b97eabc RP |
2090 | { |
2091 | struct snd_soc_dapm_path *path; | |
2092 | struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w; | |
97c866de | 2093 | struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL; |
ead9b919 | 2094 | const char *sink; |
215edda3 | 2095 | const char *control = route->control; |
ead9b919 JN |
2096 | const char *source; |
2097 | char prefixed_sink[80]; | |
2098 | char prefixed_source[80]; | |
2b97eabc RP |
2099 | int ret = 0; |
2100 | ||
88e8b9a8 | 2101 | if (dapm->codec && dapm->codec->name_prefix) { |
ead9b919 JN |
2102 | snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s", |
2103 | dapm->codec->name_prefix, route->sink); | |
2104 | sink = prefixed_sink; | |
2105 | snprintf(prefixed_source, sizeof(prefixed_source), "%s %s", | |
2106 | dapm->codec->name_prefix, route->source); | |
2107 | source = prefixed_source; | |
2108 | } else { | |
2109 | sink = route->sink; | |
2110 | source = route->source; | |
2111 | } | |
2112 | ||
97c866de JN |
2113 | /* |
2114 | * find src and dest widgets over all widgets but favor a widget from | |
2115 | * current DAPM context | |
2116 | */ | |
2117 | list_for_each_entry(w, &dapm->card->widgets, list) { | |
2b97eabc | 2118 | if (!wsink && !(strcmp(w->name, sink))) { |
97c866de JN |
2119 | wtsink = w; |
2120 | if (w->dapm == dapm) | |
2121 | wsink = w; | |
2b97eabc RP |
2122 | continue; |
2123 | } | |
2124 | if (!wsource && !(strcmp(w->name, source))) { | |
97c866de JN |
2125 | wtsource = w; |
2126 | if (w->dapm == dapm) | |
2127 | wsource = w; | |
2b97eabc RP |
2128 | } |
2129 | } | |
97c866de JN |
2130 | /* use widget from another DAPM context if not found from this */ |
2131 | if (!wsink) | |
2132 | wsink = wtsink; | |
2133 | if (!wsource) | |
2134 | wsource = wtsource; | |
2b97eabc RP |
2135 | |
2136 | if (wsource == NULL || wsink == NULL) | |
2137 | return -ENODEV; | |
2138 | ||
2139 | path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL); | |
2140 | if (!path) | |
2141 | return -ENOMEM; | |
2142 | ||
2143 | path->source = wsource; | |
2144 | path->sink = wsink; | |
215edda3 | 2145 | path->connected = route->connected; |
2b97eabc RP |
2146 | INIT_LIST_HEAD(&path->list); |
2147 | INIT_LIST_HEAD(&path->list_source); | |
2148 | INIT_LIST_HEAD(&path->list_sink); | |
2149 | ||
2150 | /* check for external widgets */ | |
2151 | if (wsink->id == snd_soc_dapm_input) { | |
2152 | if (wsource->id == snd_soc_dapm_micbias || | |
2153 | wsource->id == snd_soc_dapm_mic || | |
087d53ab RC |
2154 | wsource->id == snd_soc_dapm_line || |
2155 | wsource->id == snd_soc_dapm_output) | |
2b97eabc RP |
2156 | wsink->ext = 1; |
2157 | } | |
2158 | if (wsource->id == snd_soc_dapm_output) { | |
2159 | if (wsink->id == snd_soc_dapm_spk || | |
2160 | wsink->id == snd_soc_dapm_hp || | |
1e39221e SF |
2161 | wsink->id == snd_soc_dapm_line || |
2162 | wsink->id == snd_soc_dapm_input) | |
2b97eabc RP |
2163 | wsource->ext = 1; |
2164 | } | |
2165 | ||
2166 | /* connect static paths */ | |
2167 | if (control == NULL) { | |
8ddab3f5 | 2168 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
2169 | list_add(&path->list_sink, &wsink->sources); |
2170 | list_add(&path->list_source, &wsource->sinks); | |
2171 | path->connect = 1; | |
2172 | return 0; | |
2173 | } | |
2174 | ||
2175 | /* connect dynamic paths */ | |
dc2bea61 | 2176 | switch (wsink->id) { |
2b97eabc RP |
2177 | case snd_soc_dapm_adc: |
2178 | case snd_soc_dapm_dac: | |
2179 | case snd_soc_dapm_pga: | |
d88429a6 | 2180 | case snd_soc_dapm_out_drv: |
2b97eabc RP |
2181 | case snd_soc_dapm_input: |
2182 | case snd_soc_dapm_output: | |
1ab97c8c | 2183 | case snd_soc_dapm_siggen: |
2b97eabc RP |
2184 | case snd_soc_dapm_micbias: |
2185 | case snd_soc_dapm_vmid: | |
2186 | case snd_soc_dapm_pre: | |
2187 | case snd_soc_dapm_post: | |
246d0a17 | 2188 | case snd_soc_dapm_supply: |
62ea874a | 2189 | case snd_soc_dapm_regulator_supply: |
010ff262 MB |
2190 | case snd_soc_dapm_aif_in: |
2191 | case snd_soc_dapm_aif_out: | |
888df395 | 2192 | case snd_soc_dapm_dai: |
c74184ed | 2193 | case snd_soc_dapm_dai_link: |
8ddab3f5 | 2194 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
2195 | list_add(&path->list_sink, &wsink->sources); |
2196 | list_add(&path->list_source, &wsource->sinks); | |
2197 | path->connect = 1; | |
2198 | return 0; | |
2199 | case snd_soc_dapm_mux: | |
24ff33ac | 2200 | case snd_soc_dapm_virt_mux: |
74155556 | 2201 | case snd_soc_dapm_value_mux: |
ce6120cc | 2202 | ret = dapm_connect_mux(dapm, wsource, wsink, path, control, |
82cfecdc | 2203 | &wsink->kcontrol_news[0]); |
2b97eabc RP |
2204 | if (ret != 0) |
2205 | goto err; | |
2206 | break; | |
2207 | case snd_soc_dapm_switch: | |
2208 | case snd_soc_dapm_mixer: | |
ca9c1aae | 2209 | case snd_soc_dapm_mixer_named_ctl: |
ce6120cc | 2210 | ret = dapm_connect_mixer(dapm, wsource, wsink, path, control); |
2b97eabc RP |
2211 | if (ret != 0) |
2212 | goto err; | |
2213 | break; | |
2214 | case snd_soc_dapm_hp: | |
2215 | case snd_soc_dapm_mic: | |
2216 | case snd_soc_dapm_line: | |
2217 | case snd_soc_dapm_spk: | |
8ddab3f5 | 2218 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
2219 | list_add(&path->list_sink, &wsink->sources); |
2220 | list_add(&path->list_source, &wsource->sinks); | |
2221 | path->connect = 0; | |
2222 | return 0; | |
2223 | } | |
2224 | return 0; | |
2225 | ||
2226 | err: | |
f7d41ae8 JN |
2227 | dev_warn(dapm->dev, "asoc: no dapm match for %s --> %s --> %s\n", |
2228 | source, control, sink); | |
2b97eabc RP |
2229 | kfree(path); |
2230 | return ret; | |
2231 | } | |
105f1c28 | 2232 | |
105f1c28 MB |
2233 | /** |
2234 | * snd_soc_dapm_add_routes - Add routes between DAPM widgets | |
ce6120cc | 2235 | * @dapm: DAPM context |
105f1c28 MB |
2236 | * @route: audio routes |
2237 | * @num: number of routes | |
2238 | * | |
2239 | * Connects 2 dapm widgets together via a named audio path. The sink is | |
2240 | * the widget receiving the audio signal, whilst the source is the sender | |
2241 | * of the audio signal. | |
2242 | * | |
2243 | * Returns 0 for success else error. On error all resources can be freed | |
2244 | * with a call to snd_soc_card_free(). | |
2245 | */ | |
ce6120cc | 2246 | int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm, |
105f1c28 MB |
2247 | const struct snd_soc_dapm_route *route, int num) |
2248 | { | |
60884c27 | 2249 | int i, ret = 0; |
105f1c28 | 2250 | |
a73fb2df | 2251 | mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT); |
105f1c28 | 2252 | for (i = 0; i < num; i++) { |
ce6120cc | 2253 | ret = snd_soc_dapm_add_route(dapm, route); |
105f1c28 | 2254 | if (ret < 0) { |
f7d41ae8 JN |
2255 | dev_err(dapm->dev, "Failed to add route %s->%s\n", |
2256 | route->source, route->sink); | |
60884c27 | 2257 | break; |
105f1c28 MB |
2258 | } |
2259 | route++; | |
2260 | } | |
a73fb2df | 2261 | mutex_unlock(&dapm->card->dapm_mutex); |
105f1c28 | 2262 | |
60884c27 | 2263 | return ret; |
105f1c28 MB |
2264 | } |
2265 | EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes); | |
2266 | ||
bf3a9e13 MB |
2267 | static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context *dapm, |
2268 | const struct snd_soc_dapm_route *route) | |
2269 | { | |
2270 | struct snd_soc_dapm_widget *source = dapm_find_widget(dapm, | |
2271 | route->source, | |
2272 | true); | |
2273 | struct snd_soc_dapm_widget *sink = dapm_find_widget(dapm, | |
2274 | route->sink, | |
2275 | true); | |
2276 | struct snd_soc_dapm_path *path; | |
2277 | int count = 0; | |
2278 | ||
2279 | if (!source) { | |
2280 | dev_err(dapm->dev, "Unable to find source %s for weak route\n", | |
2281 | route->source); | |
2282 | return -ENODEV; | |
2283 | } | |
2284 | ||
2285 | if (!sink) { | |
2286 | dev_err(dapm->dev, "Unable to find sink %s for weak route\n", | |
2287 | route->sink); | |
2288 | return -ENODEV; | |
2289 | } | |
2290 | ||
2291 | if (route->control || route->connected) | |
2292 | dev_warn(dapm->dev, "Ignoring control for weak route %s->%s\n", | |
2293 | route->source, route->sink); | |
2294 | ||
2295 | list_for_each_entry(path, &source->sinks, list_source) { | |
2296 | if (path->sink == sink) { | |
2297 | path->weak = 1; | |
2298 | count++; | |
2299 | } | |
2300 | } | |
2301 | ||
2302 | if (count == 0) | |
2303 | dev_err(dapm->dev, "No path found for weak route %s->%s\n", | |
2304 | route->source, route->sink); | |
2305 | if (count > 1) | |
2306 | dev_warn(dapm->dev, "%d paths found for weak route %s->%s\n", | |
2307 | count, route->source, route->sink); | |
2308 | ||
2309 | return 0; | |
2310 | } | |
2311 | ||
2312 | /** | |
2313 | * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak | |
2314 | * @dapm: DAPM context | |
2315 | * @route: audio routes | |
2316 | * @num: number of routes | |
2317 | * | |
2318 | * Mark existing routes matching those specified in the passed array | |
2319 | * as being weak, meaning that they are ignored for the purpose of | |
2320 | * power decisions. The main intended use case is for sidetone paths | |
2321 | * which couple audio between other independent paths if they are both | |
2322 | * active in order to make the combination work better at the user | |
2323 | * level but which aren't intended to be "used". | |
2324 | * | |
2325 | * Note that CODEC drivers should not use this as sidetone type paths | |
2326 | * can frequently also be used as bypass paths. | |
2327 | */ | |
2328 | int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context *dapm, | |
2329 | const struct snd_soc_dapm_route *route, int num) | |
2330 | { | |
2331 | int i, err; | |
2332 | int ret = 0; | |
2333 | ||
a73fb2df | 2334 | mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT); |
bf3a9e13 MB |
2335 | for (i = 0; i < num; i++) { |
2336 | err = snd_soc_dapm_weak_route(dapm, route); | |
2337 | if (err) | |
2338 | ret = err; | |
2339 | route++; | |
2340 | } | |
a73fb2df | 2341 | mutex_unlock(&dapm->card->dapm_mutex); |
bf3a9e13 MB |
2342 | |
2343 | return ret; | |
2344 | } | |
2345 | EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes); | |
2346 | ||
2b97eabc RP |
2347 | /** |
2348 | * snd_soc_dapm_new_widgets - add new dapm widgets | |
ce6120cc | 2349 | * @dapm: DAPM context |
2b97eabc RP |
2350 | * |
2351 | * Checks the codec for any new dapm widgets and creates them if found. | |
2352 | * | |
2353 | * Returns 0 for success. | |
2354 | */ | |
ce6120cc | 2355 | int snd_soc_dapm_new_widgets(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
2356 | { |
2357 | struct snd_soc_dapm_widget *w; | |
b66a70d5 | 2358 | unsigned int val; |
2b97eabc | 2359 | |
a73fb2df LG |
2360 | mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT); |
2361 | ||
97c866de | 2362 | list_for_each_entry(w, &dapm->card->widgets, list) |
2b97eabc RP |
2363 | { |
2364 | if (w->new) | |
2365 | continue; | |
2366 | ||
fad59888 SW |
2367 | if (w->num_kcontrols) { |
2368 | w->kcontrols = kzalloc(w->num_kcontrols * | |
2369 | sizeof(struct snd_kcontrol *), | |
2370 | GFP_KERNEL); | |
a73fb2df LG |
2371 | if (!w->kcontrols) { |
2372 | mutex_unlock(&dapm->card->dapm_mutex); | |
fad59888 | 2373 | return -ENOMEM; |
a73fb2df | 2374 | } |
fad59888 SW |
2375 | } |
2376 | ||
2b97eabc RP |
2377 | switch(w->id) { |
2378 | case snd_soc_dapm_switch: | |
2379 | case snd_soc_dapm_mixer: | |
ca9c1aae | 2380 | case snd_soc_dapm_mixer_named_ctl: |
4b80b8c2 | 2381 | dapm_new_mixer(w); |
2b97eabc RP |
2382 | break; |
2383 | case snd_soc_dapm_mux: | |
24ff33ac | 2384 | case snd_soc_dapm_virt_mux: |
2e72f8e3 | 2385 | case snd_soc_dapm_value_mux: |
4b80b8c2 | 2386 | dapm_new_mux(w); |
2b97eabc | 2387 | break; |
2b97eabc | 2388 | case snd_soc_dapm_pga: |
d88429a6 | 2389 | case snd_soc_dapm_out_drv: |
4b80b8c2 | 2390 | dapm_new_pga(w); |
2b97eabc | 2391 | break; |
7ca3a18b | 2392 | default: |
2b97eabc RP |
2393 | break; |
2394 | } | |
b66a70d5 MB |
2395 | |
2396 | /* Read the initial power state from the device */ | |
2397 | if (w->reg >= 0) { | |
0445bdf4 | 2398 | val = soc_widget_read(w, w->reg); |
b66a70d5 MB |
2399 | val &= 1 << w->shift; |
2400 | if (w->invert) | |
2401 | val = !val; | |
2402 | ||
2403 | if (val) | |
2404 | w->power = 1; | |
2405 | } | |
2406 | ||
2b97eabc | 2407 | w->new = 1; |
d5d1e0be | 2408 | |
7508b12a | 2409 | dapm_mark_dirty(w, "new widget"); |
d5d1e0be | 2410 | dapm_debugfs_add_widget(w); |
2b97eabc RP |
2411 | } |
2412 | ||
ce6120cc | 2413 | dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP); |
a73fb2df | 2414 | mutex_unlock(&dapm->card->dapm_mutex); |
2b97eabc RP |
2415 | return 0; |
2416 | } | |
2417 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets); | |
2418 | ||
2419 | /** | |
2420 | * snd_soc_dapm_get_volsw - dapm mixer get callback | |
2421 | * @kcontrol: mixer control | |
ac11a2b3 | 2422 | * @ucontrol: control element information |
2b97eabc RP |
2423 | * |
2424 | * Callback to get the value of a dapm mixer control. | |
2425 | * | |
2426 | * Returns 0 for success. | |
2427 | */ | |
2428 | int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol, | |
2429 | struct snd_ctl_elem_value *ucontrol) | |
2430 | { | |
fafd2176 SW |
2431 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2432 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
4eaa9819 JS |
2433 | struct soc_mixer_control *mc = |
2434 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
2435 | unsigned int reg = mc->reg; |
2436 | unsigned int shift = mc->shift; | |
2437 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 2438 | int max = mc->max; |
815ecf8d JS |
2439 | unsigned int invert = mc->invert; |
2440 | unsigned int mask = (1 << fls(max)) - 1; | |
2b97eabc | 2441 | |
2b97eabc RP |
2442 | ucontrol->value.integer.value[0] = |
2443 | (snd_soc_read(widget->codec, reg) >> shift) & mask; | |
2444 | if (shift != rshift) | |
2445 | ucontrol->value.integer.value[1] = | |
2446 | (snd_soc_read(widget->codec, reg) >> rshift) & mask; | |
2447 | if (invert) { | |
2448 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 2449 | max - ucontrol->value.integer.value[0]; |
2b97eabc RP |
2450 | if (shift != rshift) |
2451 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 2452 | max - ucontrol->value.integer.value[1]; |
2b97eabc RP |
2453 | } |
2454 | ||
2455 | return 0; | |
2456 | } | |
2457 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw); | |
2458 | ||
2459 | /** | |
2460 | * snd_soc_dapm_put_volsw - dapm mixer set callback | |
2461 | * @kcontrol: mixer control | |
ac11a2b3 | 2462 | * @ucontrol: control element information |
2b97eabc RP |
2463 | * |
2464 | * Callback to set the value of a dapm mixer control. | |
2465 | * | |
2466 | * Returns 0 for success. | |
2467 | */ | |
2468 | int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, | |
2469 | struct snd_ctl_elem_value *ucontrol) | |
2470 | { | |
fafd2176 SW |
2471 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2472 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2473 | struct snd_soc_codec *codec = widget->codec; | |
a73fb2df | 2474 | struct snd_soc_card *card = codec->card; |
4eaa9819 JS |
2475 | struct soc_mixer_control *mc = |
2476 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
2477 | unsigned int reg = mc->reg; |
2478 | unsigned int shift = mc->shift; | |
4eaa9819 | 2479 | int max = mc->max; |
815ecf8d JS |
2480 | unsigned int mask = (1 << fls(max)) - 1; |
2481 | unsigned int invert = mc->invert; | |
e9cf7049 | 2482 | unsigned int val; |
97404f2e MB |
2483 | int connect, change; |
2484 | struct snd_soc_dapm_update update; | |
fafd2176 | 2485 | int wi; |
2b97eabc RP |
2486 | |
2487 | val = (ucontrol->value.integer.value[0] & mask); | |
2488 | ||
2489 | if (invert) | |
a7a4ac86 | 2490 | val = max - val; |
e9cf7049 | 2491 | mask = mask << shift; |
2b97eabc | 2492 | val = val << shift; |
2b97eabc | 2493 | |
fafd2176 SW |
2494 | if (val) |
2495 | /* new connection */ | |
2496 | connect = invert ? 0 : 1; | |
2497 | else | |
2498 | /* old connection must be powered down */ | |
2499 | connect = invert ? 1 : 0; | |
2500 | ||
3cd04343 | 2501 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
2b97eabc | 2502 | |
e9cf7049 | 2503 | change = snd_soc_test_bits(widget->codec, reg, mask, val); |
97404f2e | 2504 | if (change) { |
fafd2176 SW |
2505 | for (wi = 0; wi < wlist->num_widgets; wi++) { |
2506 | widget = wlist->widgets[wi]; | |
283375ce | 2507 | |
fafd2176 | 2508 | widget->value = val; |
97404f2e | 2509 | |
fafd2176 SW |
2510 | update.kcontrol = kcontrol; |
2511 | update.widget = widget; | |
2512 | update.reg = reg; | |
2513 | update.mask = mask; | |
2514 | update.val = val; | |
2515 | widget->dapm->update = &update; | |
97404f2e | 2516 | |
4edbb345 | 2517 | soc_dapm_mixer_update_power(widget, kcontrol, connect); |
fafd2176 SW |
2518 | |
2519 | widget->dapm->update = NULL; | |
2520 | } | |
283375ce MB |
2521 | } |
2522 | ||
a73fb2df | 2523 | mutex_unlock(&card->dapm_mutex); |
97404f2e | 2524 | return 0; |
2b97eabc RP |
2525 | } |
2526 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw); | |
2527 | ||
2528 | /** | |
2529 | * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback | |
2530 | * @kcontrol: mixer control | |
ac11a2b3 | 2531 | * @ucontrol: control element information |
2b97eabc RP |
2532 | * |
2533 | * Callback to get the value of a dapm enumerated double mixer control. | |
2534 | * | |
2535 | * Returns 0 for success. | |
2536 | */ | |
2537 | int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol, | |
2538 | struct snd_ctl_elem_value *ucontrol) | |
2539 | { | |
fafd2176 SW |
2540 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2541 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2b97eabc | 2542 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f | 2543 | unsigned int val, bitmask; |
2b97eabc | 2544 | |
f8ba0b7b | 2545 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
2546 | ; |
2547 | val = snd_soc_read(widget->codec, e->reg); | |
2548 | ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1); | |
2549 | if (e->shift_l != e->shift_r) | |
2550 | ucontrol->value.enumerated.item[1] = | |
2551 | (val >> e->shift_r) & (bitmask - 1); | |
2552 | ||
2553 | return 0; | |
2554 | } | |
2555 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double); | |
2556 | ||
2557 | /** | |
2558 | * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback | |
2559 | * @kcontrol: mixer control | |
ac11a2b3 | 2560 | * @ucontrol: control element information |
2b97eabc RP |
2561 | * |
2562 | * Callback to set the value of a dapm enumerated double mixer control. | |
2563 | * | |
2564 | * Returns 0 for success. | |
2565 | */ | |
2566 | int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, | |
2567 | struct snd_ctl_elem_value *ucontrol) | |
2568 | { | |
fafd2176 SW |
2569 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2570 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2571 | struct snd_soc_codec *codec = widget->codec; | |
a73fb2df | 2572 | struct snd_soc_card *card = codec->card; |
2b97eabc | 2573 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
3a65577d | 2574 | unsigned int val, mux, change; |
46f5822f | 2575 | unsigned int mask, bitmask; |
97404f2e | 2576 | struct snd_soc_dapm_update update; |
fafd2176 | 2577 | int wi; |
2b97eabc | 2578 | |
f8ba0b7b | 2579 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc | 2580 | ; |
f8ba0b7b | 2581 | if (ucontrol->value.enumerated.item[0] > e->max - 1) |
2b97eabc RP |
2582 | return -EINVAL; |
2583 | mux = ucontrol->value.enumerated.item[0]; | |
2584 | val = mux << e->shift_l; | |
2585 | mask = (bitmask - 1) << e->shift_l; | |
2586 | if (e->shift_l != e->shift_r) { | |
f8ba0b7b | 2587 | if (ucontrol->value.enumerated.item[1] > e->max - 1) |
2b97eabc RP |
2588 | return -EINVAL; |
2589 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
2590 | mask |= (bitmask - 1) << e->shift_r; | |
2591 | } | |
2592 | ||
3cd04343 | 2593 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
fafd2176 | 2594 | |
3a65577d | 2595 | change = snd_soc_test_bits(widget->codec, e->reg, mask, val); |
fafd2176 SW |
2596 | if (change) { |
2597 | for (wi = 0; wi < wlist->num_widgets; wi++) { | |
2598 | widget = wlist->widgets[wi]; | |
2599 | ||
2600 | widget->value = val; | |
1642e3d4 | 2601 | |
fafd2176 SW |
2602 | update.kcontrol = kcontrol; |
2603 | update.widget = widget; | |
2604 | update.reg = e->reg; | |
2605 | update.mask = mask; | |
2606 | update.val = val; | |
2607 | widget->dapm->update = &update; | |
1642e3d4 | 2608 | |
4edbb345 | 2609 | soc_dapm_mux_update_power(widget, kcontrol, mux, e); |
1642e3d4 | 2610 | |
fafd2176 SW |
2611 | widget->dapm->update = NULL; |
2612 | } | |
2613 | } | |
2b97eabc | 2614 | |
a73fb2df | 2615 | mutex_unlock(&card->dapm_mutex); |
97404f2e | 2616 | return change; |
2b97eabc RP |
2617 | } |
2618 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double); | |
2619 | ||
d2b247a8 MB |
2620 | /** |
2621 | * snd_soc_dapm_get_enum_virt - Get virtual DAPM mux | |
2622 | * @kcontrol: mixer control | |
2623 | * @ucontrol: control element information | |
2624 | * | |
2625 | * Returns 0 for success. | |
2626 | */ | |
2627 | int snd_soc_dapm_get_enum_virt(struct snd_kcontrol *kcontrol, | |
2628 | struct snd_ctl_elem_value *ucontrol) | |
2629 | { | |
fafd2176 SW |
2630 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2631 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
d2b247a8 MB |
2632 | |
2633 | ucontrol->value.enumerated.item[0] = widget->value; | |
2634 | ||
2635 | return 0; | |
2636 | } | |
2637 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_virt); | |
2638 | ||
2639 | /** | |
2640 | * snd_soc_dapm_put_enum_virt - Set virtual DAPM mux | |
2641 | * @kcontrol: mixer control | |
2642 | * @ucontrol: control element information | |
2643 | * | |
2644 | * Returns 0 for success. | |
2645 | */ | |
2646 | int snd_soc_dapm_put_enum_virt(struct snd_kcontrol *kcontrol, | |
2647 | struct snd_ctl_elem_value *ucontrol) | |
2648 | { | |
fafd2176 SW |
2649 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2650 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2651 | struct snd_soc_codec *codec = widget->codec; | |
a73fb2df | 2652 | struct snd_soc_card *card = codec->card; |
d2b247a8 MB |
2653 | struct soc_enum *e = |
2654 | (struct soc_enum *)kcontrol->private_value; | |
2655 | int change; | |
2656 | int ret = 0; | |
fafd2176 | 2657 | int wi; |
d2b247a8 MB |
2658 | |
2659 | if (ucontrol->value.enumerated.item[0] >= e->max) | |
2660 | return -EINVAL; | |
2661 | ||
3cd04343 | 2662 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
d2b247a8 MB |
2663 | |
2664 | change = widget->value != ucontrol->value.enumerated.item[0]; | |
fafd2176 SW |
2665 | if (change) { |
2666 | for (wi = 0; wi < wlist->num_widgets; wi++) { | |
2667 | widget = wlist->widgets[wi]; | |
2668 | ||
2669 | widget->value = ucontrol->value.enumerated.item[0]; | |
2670 | ||
4edbb345 | 2671 | soc_dapm_mux_update_power(widget, kcontrol, widget->value, e); |
fafd2176 SW |
2672 | } |
2673 | } | |
d2b247a8 | 2674 | |
a73fb2df | 2675 | mutex_unlock(&card->dapm_mutex); |
d2b247a8 MB |
2676 | return ret; |
2677 | } | |
2678 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt); | |
2679 | ||
2e72f8e3 PU |
2680 | /** |
2681 | * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get | |
2682 | * callback | |
2683 | * @kcontrol: mixer control | |
2684 | * @ucontrol: control element information | |
2685 | * | |
2686 | * Callback to get the value of a dapm semi enumerated double mixer control. | |
2687 | * | |
2688 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
2689 | * used for handling bitfield coded enumeration for example. | |
2690 | * | |
2691 | * Returns 0 for success. | |
2692 | */ | |
2693 | int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol *kcontrol, | |
2694 | struct snd_ctl_elem_value *ucontrol) | |
2695 | { | |
fafd2176 SW |
2696 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2697 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
74155556 | 2698 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f | 2699 | unsigned int reg_val, val, mux; |
2e72f8e3 PU |
2700 | |
2701 | reg_val = snd_soc_read(widget->codec, e->reg); | |
2702 | val = (reg_val >> e->shift_l) & e->mask; | |
2703 | for (mux = 0; mux < e->max; mux++) { | |
2704 | if (val == e->values[mux]) | |
2705 | break; | |
2706 | } | |
2707 | ucontrol->value.enumerated.item[0] = mux; | |
2708 | if (e->shift_l != e->shift_r) { | |
2709 | val = (reg_val >> e->shift_r) & e->mask; | |
2710 | for (mux = 0; mux < e->max; mux++) { | |
2711 | if (val == e->values[mux]) | |
2712 | break; | |
2713 | } | |
2714 | ucontrol->value.enumerated.item[1] = mux; | |
2715 | } | |
2716 | ||
2717 | return 0; | |
2718 | } | |
2719 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double); | |
2720 | ||
2721 | /** | |
2722 | * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set | |
2723 | * callback | |
2724 | * @kcontrol: mixer control | |
2725 | * @ucontrol: control element information | |
2726 | * | |
2727 | * Callback to set the value of a dapm semi enumerated double mixer control. | |
2728 | * | |
2729 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
2730 | * used for handling bitfield coded enumeration for example. | |
2731 | * | |
2732 | * Returns 0 for success. | |
2733 | */ | |
2734 | int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol, | |
2735 | struct snd_ctl_elem_value *ucontrol) | |
2736 | { | |
fafd2176 SW |
2737 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2738 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2739 | struct snd_soc_codec *codec = widget->codec; | |
a73fb2df | 2740 | struct snd_soc_card *card = codec->card; |
74155556 | 2741 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
3a65577d | 2742 | unsigned int val, mux, change; |
46f5822f | 2743 | unsigned int mask; |
97404f2e | 2744 | struct snd_soc_dapm_update update; |
fafd2176 | 2745 | int wi; |
2e72f8e3 PU |
2746 | |
2747 | if (ucontrol->value.enumerated.item[0] > e->max - 1) | |
2748 | return -EINVAL; | |
2749 | mux = ucontrol->value.enumerated.item[0]; | |
2750 | val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l; | |
2751 | mask = e->mask << e->shift_l; | |
2752 | if (e->shift_l != e->shift_r) { | |
2753 | if (ucontrol->value.enumerated.item[1] > e->max - 1) | |
2754 | return -EINVAL; | |
2755 | val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r; | |
2756 | mask |= e->mask << e->shift_r; | |
2757 | } | |
2758 | ||
3cd04343 | 2759 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
fafd2176 | 2760 | |
3a65577d | 2761 | change = snd_soc_test_bits(widget->codec, e->reg, mask, val); |
fafd2176 SW |
2762 | if (change) { |
2763 | for (wi = 0; wi < wlist->num_widgets; wi++) { | |
2764 | widget = wlist->widgets[wi]; | |
1642e3d4 | 2765 | |
fafd2176 | 2766 | widget->value = val; |
1642e3d4 | 2767 | |
fafd2176 SW |
2768 | update.kcontrol = kcontrol; |
2769 | update.widget = widget; | |
2770 | update.reg = e->reg; | |
2771 | update.mask = mask; | |
2772 | update.val = val; | |
2773 | widget->dapm->update = &update; | |
1642e3d4 | 2774 | |
4edbb345 | 2775 | soc_dapm_mux_update_power(widget, kcontrol, mux, e); |
fafd2176 SW |
2776 | |
2777 | widget->dapm->update = NULL; | |
2778 | } | |
2779 | } | |
2e72f8e3 | 2780 | |
a73fb2df | 2781 | mutex_unlock(&card->dapm_mutex); |
97404f2e | 2782 | return change; |
2e72f8e3 PU |
2783 | } |
2784 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double); | |
2785 | ||
8b37dbd2 MB |
2786 | /** |
2787 | * snd_soc_dapm_info_pin_switch - Info for a pin switch | |
2788 | * | |
2789 | * @kcontrol: mixer control | |
2790 | * @uinfo: control element information | |
2791 | * | |
2792 | * Callback to provide information about a pin switch control. | |
2793 | */ | |
2794 | int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol, | |
2795 | struct snd_ctl_elem_info *uinfo) | |
2796 | { | |
2797 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
2798 | uinfo->count = 1; | |
2799 | uinfo->value.integer.min = 0; | |
2800 | uinfo->value.integer.max = 1; | |
2801 | ||
2802 | return 0; | |
2803 | } | |
2804 | EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch); | |
2805 | ||
2806 | /** | |
2807 | * snd_soc_dapm_get_pin_switch - Get information for a pin switch | |
2808 | * | |
2809 | * @kcontrol: mixer control | |
2810 | * @ucontrol: Value | |
2811 | */ | |
2812 | int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol, | |
2813 | struct snd_ctl_elem_value *ucontrol) | |
2814 | { | |
48a8c394 | 2815 | struct snd_soc_card *card = snd_kcontrol_chip(kcontrol); |
8b37dbd2 MB |
2816 | const char *pin = (const char *)kcontrol->private_value; |
2817 | ||
3cd04343 | 2818 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
8b37dbd2 MB |
2819 | |
2820 | ucontrol->value.integer.value[0] = | |
48a8c394 | 2821 | snd_soc_dapm_get_pin_status(&card->dapm, pin); |
8b37dbd2 | 2822 | |
a73fb2df | 2823 | mutex_unlock(&card->dapm_mutex); |
8b37dbd2 MB |
2824 | |
2825 | return 0; | |
2826 | } | |
2827 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch); | |
2828 | ||
2829 | /** | |
2830 | * snd_soc_dapm_put_pin_switch - Set information for a pin switch | |
2831 | * | |
2832 | * @kcontrol: mixer control | |
2833 | * @ucontrol: Value | |
2834 | */ | |
2835 | int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol, | |
2836 | struct snd_ctl_elem_value *ucontrol) | |
2837 | { | |
48a8c394 | 2838 | struct snd_soc_card *card = snd_kcontrol_chip(kcontrol); |
8b37dbd2 MB |
2839 | const char *pin = (const char *)kcontrol->private_value; |
2840 | ||
3cd04343 | 2841 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
8b37dbd2 MB |
2842 | |
2843 | if (ucontrol->value.integer.value[0]) | |
48a8c394 | 2844 | snd_soc_dapm_enable_pin(&card->dapm, pin); |
8b37dbd2 | 2845 | else |
48a8c394 | 2846 | snd_soc_dapm_disable_pin(&card->dapm, pin); |
8b37dbd2 | 2847 | |
a73fb2df | 2848 | mutex_unlock(&card->dapm_mutex); |
8b37dbd2 | 2849 | |
a73fb2df | 2850 | snd_soc_dapm_sync(&card->dapm); |
8b37dbd2 MB |
2851 | return 0; |
2852 | } | |
2853 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch); | |
2854 | ||
5ba06fc9 MB |
2855 | static struct snd_soc_dapm_widget * |
2856 | snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm, | |
2857 | const struct snd_soc_dapm_widget *widget) | |
2b97eabc RP |
2858 | { |
2859 | struct snd_soc_dapm_widget *w; | |
ead9b919 | 2860 | size_t name_len; |
62ea874a | 2861 | int ret; |
2b97eabc RP |
2862 | |
2863 | if ((w = dapm_cnew_widget(widget)) == NULL) | |
5ba06fc9 | 2864 | return NULL; |
2b97eabc | 2865 | |
62ea874a MB |
2866 | switch (w->id) { |
2867 | case snd_soc_dapm_regulator_supply: | |
a3cc056b LG |
2868 | w->regulator = devm_regulator_get(dapm->dev, w->name); |
2869 | if (IS_ERR(w->regulator)) { | |
2870 | ret = PTR_ERR(w->regulator); | |
62ea874a MB |
2871 | dev_err(dapm->dev, "Failed to request %s: %d\n", |
2872 | w->name, ret); | |
5ba06fc9 | 2873 | return NULL; |
62ea874a MB |
2874 | } |
2875 | break; | |
2876 | default: | |
2877 | break; | |
2878 | } | |
2b97eabc | 2879 | |
ead9b919 | 2880 | name_len = strlen(widget->name) + 1; |
88e8b9a8 | 2881 | if (dapm->codec && dapm->codec->name_prefix) |
ead9b919 JN |
2882 | name_len += 1 + strlen(dapm->codec->name_prefix); |
2883 | w->name = kmalloc(name_len, GFP_KERNEL); | |
2884 | if (w->name == NULL) { | |
2885 | kfree(w); | |
5ba06fc9 | 2886 | return NULL; |
ead9b919 | 2887 | } |
88e8b9a8 | 2888 | if (dapm->codec && dapm->codec->name_prefix) |
888df395 | 2889 | snprintf((char *)w->name, name_len, "%s %s", |
ead9b919 JN |
2890 | dapm->codec->name_prefix, widget->name); |
2891 | else | |
888df395 | 2892 | snprintf((char *)w->name, name_len, "%s", widget->name); |
ead9b919 | 2893 | |
7ca3a18b MB |
2894 | switch (w->id) { |
2895 | case snd_soc_dapm_switch: | |
2896 | case snd_soc_dapm_mixer: | |
2897 | case snd_soc_dapm_mixer_named_ctl: | |
2898 | w->power_check = dapm_generic_check_power; | |
2899 | break; | |
2900 | case snd_soc_dapm_mux: | |
2901 | case snd_soc_dapm_virt_mux: | |
2902 | case snd_soc_dapm_value_mux: | |
2903 | w->power_check = dapm_generic_check_power; | |
2904 | break; | |
2905 | case snd_soc_dapm_adc: | |
2906 | case snd_soc_dapm_aif_out: | |
2907 | w->power_check = dapm_adc_check_power; | |
2908 | break; | |
2909 | case snd_soc_dapm_dac: | |
2910 | case snd_soc_dapm_aif_in: | |
2911 | w->power_check = dapm_dac_check_power; | |
2912 | break; | |
2913 | case snd_soc_dapm_pga: | |
2914 | case snd_soc_dapm_out_drv: | |
2915 | case snd_soc_dapm_input: | |
2916 | case snd_soc_dapm_output: | |
2917 | case snd_soc_dapm_micbias: | |
2918 | case snd_soc_dapm_spk: | |
2919 | case snd_soc_dapm_hp: | |
2920 | case snd_soc_dapm_mic: | |
2921 | case snd_soc_dapm_line: | |
c74184ed | 2922 | case snd_soc_dapm_dai_link: |
7ca3a18b MB |
2923 | w->power_check = dapm_generic_check_power; |
2924 | break; | |
2925 | case snd_soc_dapm_supply: | |
62ea874a | 2926 | case snd_soc_dapm_regulator_supply: |
7ca3a18b MB |
2927 | w->power_check = dapm_supply_check_power; |
2928 | break; | |
888df395 MB |
2929 | case snd_soc_dapm_dai: |
2930 | w->power_check = dapm_dai_check_power; | |
2931 | break; | |
7ca3a18b MB |
2932 | default: |
2933 | w->power_check = dapm_always_on_check_power; | |
2934 | break; | |
2935 | } | |
2936 | ||
97c866de | 2937 | dapm->n_widgets++; |
ce6120cc LG |
2938 | w->dapm = dapm; |
2939 | w->codec = dapm->codec; | |
b7950641 | 2940 | w->platform = dapm->platform; |
2b97eabc RP |
2941 | INIT_LIST_HEAD(&w->sources); |
2942 | INIT_LIST_HEAD(&w->sinks); | |
2943 | INIT_LIST_HEAD(&w->list); | |
db432b41 | 2944 | INIT_LIST_HEAD(&w->dirty); |
97c866de | 2945 | list_add(&w->list, &dapm->card->widgets); |
2b97eabc RP |
2946 | |
2947 | /* machine layer set ups unconnected pins and insertions */ | |
2948 | w->connected = 1; | |
5ba06fc9 | 2949 | return w; |
2b97eabc | 2950 | } |
2b97eabc | 2951 | |
4ba1327a MB |
2952 | /** |
2953 | * snd_soc_dapm_new_controls - create new dapm controls | |
ce6120cc | 2954 | * @dapm: DAPM context |
4ba1327a MB |
2955 | * @widget: widget array |
2956 | * @num: number of widgets | |
2957 | * | |
2958 | * Creates new DAPM controls based upon the templates. | |
2959 | * | |
2960 | * Returns 0 for success else error. | |
2961 | */ | |
ce6120cc | 2962 | int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm, |
4ba1327a MB |
2963 | const struct snd_soc_dapm_widget *widget, |
2964 | int num) | |
2965 | { | |
5ba06fc9 MB |
2966 | struct snd_soc_dapm_widget *w; |
2967 | int i; | |
60884c27 | 2968 | int ret = 0; |
4ba1327a | 2969 | |
a73fb2df | 2970 | mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT); |
4ba1327a | 2971 | for (i = 0; i < num; i++) { |
5ba06fc9 MB |
2972 | w = snd_soc_dapm_new_control(dapm, widget); |
2973 | if (!w) { | |
f7d41ae8 | 2974 | dev_err(dapm->dev, |
5ba06fc9 MB |
2975 | "ASoC: Failed to create DAPM control %s\n", |
2976 | widget->name); | |
60884c27 DC |
2977 | ret = -ENOMEM; |
2978 | break; | |
b8b33cb5 | 2979 | } |
4ba1327a MB |
2980 | widget++; |
2981 | } | |
a73fb2df | 2982 | mutex_unlock(&dapm->card->dapm_mutex); |
60884c27 | 2983 | return ret; |
4ba1327a MB |
2984 | } |
2985 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls); | |
2986 | ||
c74184ed MB |
2987 | static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w, |
2988 | struct snd_kcontrol *kcontrol, int event) | |
2989 | { | |
2990 | struct snd_soc_dapm_path *source_p, *sink_p; | |
2991 | struct snd_soc_dai *source, *sink; | |
2992 | const struct snd_soc_pcm_stream *config = w->params; | |
2993 | struct snd_pcm_substream substream; | |
9747cec2 | 2994 | struct snd_pcm_hw_params *params = NULL; |
c74184ed MB |
2995 | u64 fmt; |
2996 | int ret; | |
2997 | ||
2998 | BUG_ON(!config); | |
2999 | BUG_ON(list_empty(&w->sources) || list_empty(&w->sinks)); | |
3000 | ||
3001 | /* We only support a single source and sink, pick the first */ | |
3002 | source_p = list_first_entry(&w->sources, struct snd_soc_dapm_path, | |
3003 | list_sink); | |
3004 | sink_p = list_first_entry(&w->sinks, struct snd_soc_dapm_path, | |
3005 | list_source); | |
3006 | ||
3007 | BUG_ON(!source_p || !sink_p); | |
3008 | BUG_ON(!sink_p->source || !source_p->sink); | |
3009 | BUG_ON(!source_p->source || !sink_p->sink); | |
3010 | ||
3011 | source = source_p->source->priv; | |
3012 | sink = sink_p->sink->priv; | |
3013 | ||
3014 | /* Be a little careful as we don't want to overflow the mask array */ | |
3015 | if (config->formats) { | |
3016 | fmt = ffs(config->formats) - 1; | |
3017 | } else { | |
516541a0 | 3018 | dev_warn(w->dapm->dev, "Invalid format %llx specified\n", |
c74184ed MB |
3019 | config->formats); |
3020 | fmt = 0; | |
3021 | } | |
3022 | ||
3023 | /* Currently very limited parameter selection */ | |
9747cec2 MB |
3024 | params = kzalloc(sizeof(*params), GFP_KERNEL); |
3025 | if (!params) { | |
3026 | ret = -ENOMEM; | |
3027 | goto out; | |
3028 | } | |
3029 | snd_mask_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), fmt); | |
c74184ed | 3030 | |
9747cec2 | 3031 | hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->min = |
c74184ed | 3032 | config->rate_min; |
9747cec2 | 3033 | hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->max = |
c74184ed MB |
3034 | config->rate_max; |
3035 | ||
9747cec2 | 3036 | hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->min |
c74184ed | 3037 | = config->channels_min; |
9747cec2 | 3038 | hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max |
c74184ed MB |
3039 | = config->channels_max; |
3040 | ||
3041 | memset(&substream, 0, sizeof(substream)); | |
3042 | ||
3043 | switch (event) { | |
3044 | case SND_SOC_DAPM_PRE_PMU: | |
3045 | if (source->driver->ops && source->driver->ops->hw_params) { | |
3046 | substream.stream = SNDRV_PCM_STREAM_CAPTURE; | |
3047 | ret = source->driver->ops->hw_params(&substream, | |
9747cec2 | 3048 | params, source); |
c74184ed MB |
3049 | if (ret != 0) { |
3050 | dev_err(source->dev, | |
3051 | "hw_params() failed: %d\n", ret); | |
9747cec2 | 3052 | goto out; |
c74184ed MB |
3053 | } |
3054 | } | |
3055 | ||
3056 | if (sink->driver->ops && sink->driver->ops->hw_params) { | |
3057 | substream.stream = SNDRV_PCM_STREAM_PLAYBACK; | |
9747cec2 | 3058 | ret = sink->driver->ops->hw_params(&substream, params, |
c74184ed MB |
3059 | sink); |
3060 | if (ret != 0) { | |
3061 | dev_err(sink->dev, | |
3062 | "hw_params() failed: %d\n", ret); | |
9747cec2 | 3063 | goto out; |
c74184ed MB |
3064 | } |
3065 | } | |
3066 | break; | |
3067 | ||
3068 | case SND_SOC_DAPM_POST_PMU: | |
3069 | ret = snd_soc_dai_digital_mute(sink, 0); | |
3070 | if (ret != 0 && ret != -ENOTSUPP) | |
3071 | dev_warn(sink->dev, "Failed to unmute: %d\n", ret); | |
9747cec2 | 3072 | ret = 0; |
c74184ed MB |
3073 | break; |
3074 | ||
3075 | case SND_SOC_DAPM_PRE_PMD: | |
3076 | ret = snd_soc_dai_digital_mute(sink, 1); | |
3077 | if (ret != 0 && ret != -ENOTSUPP) | |
3078 | dev_warn(sink->dev, "Failed to mute: %d\n", ret); | |
9747cec2 | 3079 | ret = 0; |
c74184ed MB |
3080 | break; |
3081 | ||
3082 | default: | |
3083 | BUG(); | |
3084 | return -EINVAL; | |
3085 | } | |
3086 | ||
9747cec2 MB |
3087 | out: |
3088 | kfree(params); | |
3089 | return ret; | |
c74184ed MB |
3090 | } |
3091 | ||
3092 | int snd_soc_dapm_new_pcm(struct snd_soc_card *card, | |
3093 | const struct snd_soc_pcm_stream *params, | |
3094 | struct snd_soc_dapm_widget *source, | |
3095 | struct snd_soc_dapm_widget *sink) | |
3096 | { | |
3097 | struct snd_soc_dapm_route routes[2]; | |
3098 | struct snd_soc_dapm_widget template; | |
3099 | struct snd_soc_dapm_widget *w; | |
3100 | size_t len; | |
3101 | char *link_name; | |
3102 | ||
3103 | len = strlen(source->name) + strlen(sink->name) + 2; | |
3104 | link_name = devm_kzalloc(card->dev, len, GFP_KERNEL); | |
3105 | if (!link_name) | |
3106 | return -ENOMEM; | |
3107 | snprintf(link_name, len, "%s-%s", source->name, sink->name); | |
3108 | ||
3109 | memset(&template, 0, sizeof(template)); | |
3110 | template.reg = SND_SOC_NOPM; | |
3111 | template.id = snd_soc_dapm_dai_link; | |
3112 | template.name = link_name; | |
3113 | template.event = snd_soc_dai_link_event; | |
3114 | template.event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU | | |
3115 | SND_SOC_DAPM_PRE_PMD; | |
3116 | ||
3117 | dev_dbg(card->dev, "adding %s widget\n", link_name); | |
3118 | ||
3119 | w = snd_soc_dapm_new_control(&card->dapm, &template); | |
3120 | if (!w) { | |
3121 | dev_err(card->dev, "Failed to create %s widget\n", | |
3122 | link_name); | |
3123 | return -ENOMEM; | |
3124 | } | |
3125 | ||
3126 | w->params = params; | |
3127 | ||
3128 | memset(&routes, 0, sizeof(routes)); | |
3129 | ||
3130 | routes[0].source = source->name; | |
3131 | routes[0].sink = link_name; | |
3132 | routes[1].source = link_name; | |
3133 | routes[1].sink = sink->name; | |
3134 | ||
3135 | return snd_soc_dapm_add_routes(&card->dapm, routes, | |
3136 | ARRAY_SIZE(routes)); | |
3137 | } | |
3138 | ||
888df395 MB |
3139 | int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context *dapm, |
3140 | struct snd_soc_dai *dai) | |
2b97eabc | 3141 | { |
888df395 | 3142 | struct snd_soc_dapm_widget template; |
2b97eabc RP |
3143 | struct snd_soc_dapm_widget *w; |
3144 | ||
888df395 MB |
3145 | WARN_ON(dapm->dev != dai->dev); |
3146 | ||
3147 | memset(&template, 0, sizeof(template)); | |
3148 | template.reg = SND_SOC_NOPM; | |
3149 | ||
3150 | if (dai->driver->playback.stream_name) { | |
3151 | template.id = snd_soc_dapm_dai; | |
3152 | template.name = dai->driver->playback.stream_name; | |
3153 | template.sname = dai->driver->playback.stream_name; | |
3154 | ||
3155 | dev_dbg(dai->dev, "adding %s widget\n", | |
3156 | template.name); | |
3157 | ||
3158 | w = snd_soc_dapm_new_control(dapm, &template); | |
3159 | if (!w) { | |
3160 | dev_err(dapm->dev, "Failed to create %s widget\n", | |
3161 | dai->driver->playback.stream_name); | |
3162 | } | |
3163 | ||
3164 | w->priv = dai; | |
3165 | dai->playback_widget = w; | |
3166 | } | |
3167 | ||
3168 | if (dai->driver->capture.stream_name) { | |
3169 | template.id = snd_soc_dapm_dai; | |
3170 | template.name = dai->driver->capture.stream_name; | |
3171 | template.sname = dai->driver->capture.stream_name; | |
3172 | ||
3173 | dev_dbg(dai->dev, "adding %s widget\n", | |
3174 | template.name); | |
3175 | ||
3176 | w = snd_soc_dapm_new_control(dapm, &template); | |
3177 | if (!w) { | |
3178 | dev_err(dapm->dev, "Failed to create %s widget\n", | |
3179 | dai->driver->capture.stream_name); | |
3180 | } | |
3181 | ||
3182 | w->priv = dai; | |
3183 | dai->capture_widget = w; | |
3184 | } | |
3185 | ||
3186 | return 0; | |
3187 | } | |
3188 | ||
3189 | int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card) | |
3190 | { | |
3191 | struct snd_soc_dapm_widget *dai_w, *w; | |
3192 | struct snd_soc_dai *dai; | |
3193 | struct snd_soc_dapm_route r; | |
3194 | ||
3195 | memset(&r, 0, sizeof(r)); | |
3196 | ||
3197 | /* For each DAI widget... */ | |
3198 | list_for_each_entry(dai_w, &card->widgets, list) { | |
3199 | if (dai_w->id != snd_soc_dapm_dai) | |
2b97eabc | 3200 | continue; |
888df395 MB |
3201 | |
3202 | dai = dai_w->priv; | |
3203 | ||
3204 | /* ...find all widgets with the same stream and link them */ | |
3205 | list_for_each_entry(w, &card->widgets, list) { | |
3206 | if (w->dapm != dai_w->dapm) | |
3207 | continue; | |
3208 | ||
3209 | if (w->id == snd_soc_dapm_dai) | |
3210 | continue; | |
3211 | ||
3212 | if (!w->sname) | |
3213 | continue; | |
3214 | ||
3215 | if (dai->driver->playback.stream_name && | |
3216 | strstr(w->sname, | |
3217 | dai->driver->playback.stream_name)) { | |
3218 | r.source = dai->playback_widget->name; | |
3219 | r.sink = w->name; | |
3220 | dev_dbg(dai->dev, "%s -> %s\n", | |
3221 | r.source, r.sink); | |
3222 | ||
3223 | snd_soc_dapm_add_route(w->dapm, &r); | |
3224 | } | |
3225 | ||
3226 | if (dai->driver->capture.stream_name && | |
3227 | strstr(w->sname, | |
3228 | dai->driver->capture.stream_name)) { | |
3229 | r.source = w->name; | |
3230 | r.sink = dai->capture_widget->name; | |
3231 | dev_dbg(dai->dev, "%s -> %s\n", | |
3232 | r.source, r.sink); | |
3233 | ||
3234 | snd_soc_dapm_add_route(w->dapm, &r); | |
2b97eabc RP |
3235 | } |
3236 | } | |
3237 | } | |
2b97eabc | 3238 | |
888df395 MB |
3239 | return 0; |
3240 | } | |
64a648c2 | 3241 | |
d9b0951b LG |
3242 | static void soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream, |
3243 | int event) | |
2b97eabc | 3244 | { |
7bd3a6f3 | 3245 | |
d9b0951b LG |
3246 | struct snd_soc_dapm_widget *w_cpu, *w_codec; |
3247 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
3248 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
7bd3a6f3 | 3249 | |
d9b0951b LG |
3250 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
3251 | w_cpu = cpu_dai->playback_widget; | |
3252 | w_codec = codec_dai->playback_widget; | |
3253 | } else { | |
3254 | w_cpu = cpu_dai->capture_widget; | |
3255 | w_codec = codec_dai->capture_widget; | |
3256 | } | |
2b97eabc | 3257 | |
d9b0951b | 3258 | if (w_cpu) { |
fe360685 | 3259 | |
d9b0951b LG |
3260 | dapm_mark_dirty(w_cpu, "stream event"); |
3261 | ||
3262 | switch (event) { | |
3263 | case SND_SOC_DAPM_STREAM_START: | |
3264 | w_cpu->active = 1; | |
3265 | break; | |
3266 | case SND_SOC_DAPM_STREAM_STOP: | |
3267 | w_cpu->active = 0; | |
3268 | break; | |
3269 | case SND_SOC_DAPM_STREAM_SUSPEND: | |
3270 | case SND_SOC_DAPM_STREAM_RESUME: | |
3271 | case SND_SOC_DAPM_STREAM_PAUSE_PUSH: | |
3272 | case SND_SOC_DAPM_STREAM_PAUSE_RELEASE: | |
3273 | break; | |
3274 | } | |
3275 | } | |
3276 | ||
3277 | if (w_codec) { | |
3278 | ||
3279 | dapm_mark_dirty(w_codec, "stream event"); | |
3280 | ||
3281 | switch (event) { | |
3282 | case SND_SOC_DAPM_STREAM_START: | |
3283 | w_codec->active = 1; | |
3284 | break; | |
3285 | case SND_SOC_DAPM_STREAM_STOP: | |
3286 | w_codec->active = 0; | |
3287 | break; | |
3288 | case SND_SOC_DAPM_STREAM_SUSPEND: | |
3289 | case SND_SOC_DAPM_STREAM_RESUME: | |
3290 | case SND_SOC_DAPM_STREAM_PAUSE_PUSH: | |
3291 | case SND_SOC_DAPM_STREAM_PAUSE_RELEASE: | |
3292 | break; | |
3293 | } | |
2b97eabc | 3294 | } |
2b97eabc | 3295 | |
d9b0951b | 3296 | dapm_power_widgets(&rtd->card->dapm, event); |
ce6120cc LG |
3297 | } |
3298 | ||
3299 | /** | |
3300 | * snd_soc_dapm_stream_event - send a stream event to the dapm core | |
3301 | * @rtd: PCM runtime data | |
3302 | * @stream: stream name | |
3303 | * @event: stream event | |
3304 | * | |
3305 | * Sends a stream event to the dapm core. The core then makes any | |
3306 | * necessary widget power changes. | |
3307 | * | |
3308 | * Returns 0 for success else error. | |
3309 | */ | |
d9b0951b LG |
3310 | void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream, |
3311 | int event) | |
ce6120cc | 3312 | { |
a73fb2df | 3313 | struct snd_soc_card *card = rtd->card; |
ce6120cc | 3314 | |
3cd04343 | 3315 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
d9b0951b | 3316 | soc_dapm_stream_event(rtd, stream, event); |
a73fb2df | 3317 | mutex_unlock(&card->dapm_mutex); |
2b97eabc | 3318 | } |
2b97eabc RP |
3319 | |
3320 | /** | |
a5302181 | 3321 | * snd_soc_dapm_enable_pin - enable pin. |
ce6120cc | 3322 | * @dapm: DAPM context |
a5302181 | 3323 | * @pin: pin name |
2b97eabc | 3324 | * |
74b8f955 | 3325 | * Enables input/output pin and its parents or children widgets iff there is |
a5302181 LG |
3326 | * a valid audio route and active audio stream. |
3327 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
3328 | * do any widget power switching. | |
2b97eabc | 3329 | */ |
ce6120cc | 3330 | int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin) |
2b97eabc | 3331 | { |
ce6120cc | 3332 | return snd_soc_dapm_set_pin(dapm, pin, 1); |
a5302181 LG |
3333 | } |
3334 | EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin); | |
2b97eabc | 3335 | |
da34183e MB |
3336 | /** |
3337 | * snd_soc_dapm_force_enable_pin - force a pin to be enabled | |
ce6120cc | 3338 | * @dapm: DAPM context |
da34183e MB |
3339 | * @pin: pin name |
3340 | * | |
3341 | * Enables input/output pin regardless of any other state. This is | |
3342 | * intended for use with microphone bias supplies used in microphone | |
3343 | * jack detection. | |
3344 | * | |
3345 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
3346 | * do any widget power switching. | |
3347 | */ | |
ce6120cc LG |
3348 | int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm, |
3349 | const char *pin) | |
da34183e | 3350 | { |
91a5fca4 | 3351 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); |
da34183e | 3352 | |
91a5fca4 LPC |
3353 | if (!w) { |
3354 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); | |
3355 | return -EINVAL; | |
0d86733c MB |
3356 | } |
3357 | ||
91a5fca4 LPC |
3358 | dev_dbg(w->dapm->dev, "dapm: force enable pin %s\n", pin); |
3359 | w->connected = 1; | |
3360 | w->force = 1; | |
75c1f891 | 3361 | dapm_mark_dirty(w, "force enable"); |
da34183e | 3362 | |
91a5fca4 | 3363 | return 0; |
da34183e MB |
3364 | } |
3365 | EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin); | |
3366 | ||
a5302181 LG |
3367 | /** |
3368 | * snd_soc_dapm_disable_pin - disable pin. | |
ce6120cc | 3369 | * @dapm: DAPM context |
a5302181 LG |
3370 | * @pin: pin name |
3371 | * | |
74b8f955 | 3372 | * Disables input/output pin and its parents or children widgets. |
a5302181 LG |
3373 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to |
3374 | * do any widget power switching. | |
3375 | */ | |
ce6120cc LG |
3376 | int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm, |
3377 | const char *pin) | |
a5302181 | 3378 | { |
ce6120cc | 3379 | return snd_soc_dapm_set_pin(dapm, pin, 0); |
2b97eabc | 3380 | } |
a5302181 | 3381 | EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin); |
2b97eabc | 3382 | |
5817b52a MB |
3383 | /** |
3384 | * snd_soc_dapm_nc_pin - permanently disable pin. | |
ce6120cc | 3385 | * @dapm: DAPM context |
5817b52a MB |
3386 | * @pin: pin name |
3387 | * | |
3388 | * Marks the specified pin as being not connected, disabling it along | |
3389 | * any parent or child widgets. At present this is identical to | |
3390 | * snd_soc_dapm_disable_pin() but in future it will be extended to do | |
3391 | * additional things such as disabling controls which only affect | |
3392 | * paths through the pin. | |
3393 | * | |
3394 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
3395 | * do any widget power switching. | |
3396 | */ | |
ce6120cc | 3397 | int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin) |
5817b52a | 3398 | { |
ce6120cc | 3399 | return snd_soc_dapm_set_pin(dapm, pin, 0); |
5817b52a MB |
3400 | } |
3401 | EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin); | |
3402 | ||
eeec12bf | 3403 | /** |
a5302181 | 3404 | * snd_soc_dapm_get_pin_status - get audio pin status |
ce6120cc | 3405 | * @dapm: DAPM context |
a5302181 | 3406 | * @pin: audio signal pin endpoint (or start point) |
eeec12bf | 3407 | * |
a5302181 | 3408 | * Get audio pin status - connected or disconnected. |
eeec12bf | 3409 | * |
a5302181 | 3410 | * Returns 1 for connected otherwise 0. |
eeec12bf | 3411 | */ |
ce6120cc LG |
3412 | int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm, |
3413 | const char *pin) | |
eeec12bf | 3414 | { |
91a5fca4 | 3415 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); |
eeec12bf | 3416 | |
91a5fca4 LPC |
3417 | if (w) |
3418 | return w->connected; | |
a68b38ad | 3419 | |
eeec12bf GG |
3420 | return 0; |
3421 | } | |
a5302181 | 3422 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status); |
eeec12bf | 3423 | |
1547aba9 MB |
3424 | /** |
3425 | * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint | |
ce6120cc | 3426 | * @dapm: DAPM context |
1547aba9 MB |
3427 | * @pin: audio signal pin endpoint (or start point) |
3428 | * | |
3429 | * Mark the given endpoint or pin as ignoring suspend. When the | |
3430 | * system is disabled a path between two endpoints flagged as ignoring | |
3431 | * suspend will not be disabled. The path must already be enabled via | |
3432 | * normal means at suspend time, it will not be turned on if it was not | |
3433 | * already enabled. | |
3434 | */ | |
ce6120cc LG |
3435 | int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm, |
3436 | const char *pin) | |
1547aba9 | 3437 | { |
91a5fca4 | 3438 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, false); |
1547aba9 | 3439 | |
91a5fca4 LPC |
3440 | if (!w) { |
3441 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); | |
3442 | return -EINVAL; | |
1547aba9 MB |
3443 | } |
3444 | ||
91a5fca4 LPC |
3445 | w->ignore_suspend = 1; |
3446 | ||
3447 | return 0; | |
1547aba9 MB |
3448 | } |
3449 | EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend); | |
3450 | ||
1633281b SW |
3451 | static bool snd_soc_dapm_widget_in_card_paths(struct snd_soc_card *card, |
3452 | struct snd_soc_dapm_widget *w) | |
3453 | { | |
3454 | struct snd_soc_dapm_path *p; | |
3455 | ||
3456 | list_for_each_entry(p, &card->paths, list) { | |
3457 | if ((p->source == w) || (p->sink == w)) { | |
3458 | dev_dbg(card->dev, | |
3459 | "... Path %s(id:%d dapm:%p) - %s(id:%d dapm:%p)\n", | |
3460 | p->source->name, p->source->id, p->source->dapm, | |
3461 | p->sink->name, p->sink->id, p->sink->dapm); | |
3462 | ||
3463 | /* Connected to something other than the codec */ | |
3464 | if (p->source->dapm != p->sink->dapm) | |
3465 | return true; | |
3466 | /* | |
3467 | * Loopback connection from codec external pin to | |
3468 | * codec external pin | |
3469 | */ | |
3470 | if (p->sink->id == snd_soc_dapm_input) { | |
3471 | switch (p->source->id) { | |
3472 | case snd_soc_dapm_output: | |
3473 | case snd_soc_dapm_micbias: | |
3474 | return true; | |
3475 | default: | |
3476 | break; | |
3477 | } | |
3478 | } | |
3479 | } | |
3480 | } | |
3481 | ||
3482 | return false; | |
3483 | } | |
3484 | ||
3485 | /** | |
3486 | * snd_soc_dapm_auto_nc_codec_pins - call snd_soc_dapm_nc_pin for unused pins | |
3487 | * @codec: The codec whose pins should be processed | |
3488 | * | |
3489 | * Automatically call snd_soc_dapm_nc_pin() for any external pins in the codec | |
3490 | * which are unused. Pins are used if they are connected externally to the | |
3491 | * codec, whether that be to some other device, or a loop-back connection to | |
3492 | * the codec itself. | |
3493 | */ | |
3494 | void snd_soc_dapm_auto_nc_codec_pins(struct snd_soc_codec *codec) | |
3495 | { | |
3496 | struct snd_soc_card *card = codec->card; | |
3497 | struct snd_soc_dapm_context *dapm = &codec->dapm; | |
3498 | struct snd_soc_dapm_widget *w; | |
3499 | ||
a094b80b | 3500 | dev_dbg(codec->dev, "Auto NC: DAPMs: card:%p codec:%p\n", |
1633281b SW |
3501 | &card->dapm, &codec->dapm); |
3502 | ||
3503 | list_for_each_entry(w, &card->widgets, list) { | |
3504 | if (w->dapm != dapm) | |
3505 | continue; | |
3506 | switch (w->id) { | |
3507 | case snd_soc_dapm_input: | |
3508 | case snd_soc_dapm_output: | |
3509 | case snd_soc_dapm_micbias: | |
a094b80b | 3510 | dev_dbg(codec->dev, "Auto NC: Checking widget %s\n", |
1633281b SW |
3511 | w->name); |
3512 | if (!snd_soc_dapm_widget_in_card_paths(card, w)) { | |
a094b80b | 3513 | dev_dbg(codec->dev, |
1633281b SW |
3514 | "... Not in map; disabling\n"); |
3515 | snd_soc_dapm_nc_pin(dapm, w->name); | |
3516 | } | |
3517 | break; | |
3518 | default: | |
3519 | break; | |
3520 | } | |
3521 | } | |
3522 | } | |
3523 | ||
2b97eabc RP |
3524 | /** |
3525 | * snd_soc_dapm_free - free dapm resources | |
728a5222 | 3526 | * @dapm: DAPM context |
2b97eabc RP |
3527 | * |
3528 | * Free all dapm widgets and resources. | |
3529 | */ | |
ce6120cc | 3530 | void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm) |
2b97eabc | 3531 | { |
ce6120cc | 3532 | snd_soc_dapm_sys_remove(dapm->dev); |
6c45e126 | 3533 | dapm_debugfs_cleanup(dapm); |
ce6120cc | 3534 | dapm_free_widgets(dapm); |
7be31be8 | 3535 | list_del(&dapm->list); |
2b97eabc RP |
3536 | } |
3537 | EXPORT_SYMBOL_GPL(snd_soc_dapm_free); | |
3538 | ||
ce6120cc | 3539 | static void soc_dapm_shutdown_codec(struct snd_soc_dapm_context *dapm) |
51737470 | 3540 | { |
51737470 MB |
3541 | struct snd_soc_dapm_widget *w; |
3542 | LIST_HEAD(down_list); | |
3543 | int powerdown = 0; | |
3544 | ||
97c866de JN |
3545 | list_for_each_entry(w, &dapm->card->widgets, list) { |
3546 | if (w->dapm != dapm) | |
3547 | continue; | |
51737470 | 3548 | if (w->power) { |
828a842f | 3549 | dapm_seq_insert(w, &down_list, false); |
c2caa4da | 3550 | w->power = 0; |
51737470 MB |
3551 | powerdown = 1; |
3552 | } | |
3553 | } | |
3554 | ||
3555 | /* If there were no widgets to power down we're already in | |
3556 | * standby. | |
3557 | */ | |
3558 | if (powerdown) { | |
7679e42e MB |
3559 | if (dapm->bias_level == SND_SOC_BIAS_ON) |
3560 | snd_soc_dapm_set_bias_level(dapm, | |
3561 | SND_SOC_BIAS_PREPARE); | |
828a842f | 3562 | dapm_seq_run(dapm, &down_list, 0, false); |
7679e42e MB |
3563 | if (dapm->bias_level == SND_SOC_BIAS_PREPARE) |
3564 | snd_soc_dapm_set_bias_level(dapm, | |
3565 | SND_SOC_BIAS_STANDBY); | |
51737470 | 3566 | } |
f0fba2ad LG |
3567 | } |
3568 | ||
3569 | /* | |
3570 | * snd_soc_dapm_shutdown - callback for system shutdown | |
3571 | */ | |
3572 | void snd_soc_dapm_shutdown(struct snd_soc_card *card) | |
3573 | { | |
3574 | struct snd_soc_codec *codec; | |
3575 | ||
ce6120cc LG |
3576 | list_for_each_entry(codec, &card->codec_dev_list, list) { |
3577 | soc_dapm_shutdown_codec(&codec->dapm); | |
7679e42e MB |
3578 | if (codec->dapm.bias_level == SND_SOC_BIAS_STANDBY) |
3579 | snd_soc_dapm_set_bias_level(&codec->dapm, | |
3580 | SND_SOC_BIAS_OFF); | |
ce6120cc | 3581 | } |
51737470 MB |
3582 | } |
3583 | ||
2b97eabc | 3584 | /* Module information */ |
d331124d | 3585 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
2b97eabc RP |
3586 | MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC"); |
3587 | MODULE_LICENSE("GPL"); |