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Commit | Line | Data |
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2b97eabc RP |
1 | /* |
2 | * soc-dapm.c -- ALSA SoC Dynamic Audio Power Management | |
3 | * | |
4 | * Copyright 2005 Wolfson Microelectronics PLC. | |
d331124d | 5 | * Author: Liam Girdwood <lrg@slimlogic.co.uk> |
2b97eabc RP |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2 of the License, or (at your | |
10 | * option) any later version. | |
11 | * | |
2b97eabc RP |
12 | * Features: |
13 | * o Changes power status of internal codec blocks depending on the | |
14 | * dynamic configuration of codec internal audio paths and active | |
74b8f955 | 15 | * DACs/ADCs. |
2b97eabc | 16 | * o Platform power domain - can support external components i.e. amps and |
612a3fec | 17 | * mic/headphone insertion events. |
2b97eabc RP |
18 | * o Automatic Mic Bias support |
19 | * o Jack insertion power event initiation - e.g. hp insertion will enable | |
20 | * sinks, dacs, etc | |
612a3fec | 21 | * o Delayed power down of audio subsystem to reduce pops between a quick |
2b97eabc RP |
22 | * device reopen. |
23 | * | |
2b97eabc RP |
24 | */ |
25 | ||
26 | #include <linux/module.h> | |
27 | #include <linux/moduleparam.h> | |
28 | #include <linux/init.h> | |
9d0624a7 | 29 | #include <linux/async.h> |
2b97eabc RP |
30 | #include <linux/delay.h> |
31 | #include <linux/pm.h> | |
32 | #include <linux/bitops.h> | |
33 | #include <linux/platform_device.h> | |
34 | #include <linux/jiffies.h> | |
20496ff3 | 35 | #include <linux/debugfs.h> |
f1aac484 | 36 | #include <linux/pm_runtime.h> |
62ea874a | 37 | #include <linux/regulator/consumer.h> |
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, |
010ff262 MB |
55 | [snd_soc_dapm_aif_in] = 3, |
56 | [snd_soc_dapm_aif_out] = 3, | |
57 | [snd_soc_dapm_mic] = 4, | |
58 | [snd_soc_dapm_mux] = 5, | |
24ff33ac | 59 | [snd_soc_dapm_virt_mux] = 5, |
010ff262 MB |
60 | [snd_soc_dapm_value_mux] = 5, |
61 | [snd_soc_dapm_dac] = 6, | |
62 | [snd_soc_dapm_mixer] = 7, | |
63 | [snd_soc_dapm_mixer_named_ctl] = 7, | |
64 | [snd_soc_dapm_pga] = 8, | |
65 | [snd_soc_dapm_adc] = 9, | |
d88429a6 | 66 | [snd_soc_dapm_out_drv] = 10, |
010ff262 MB |
67 | [snd_soc_dapm_hp] = 10, |
68 | [snd_soc_dapm_spk] = 10, | |
69 | [snd_soc_dapm_post] = 11, | |
2b97eabc | 70 | }; |
ca9c1aae | 71 | |
2b97eabc | 72 | static int dapm_down_seq[] = { |
38357ab2 MB |
73 | [snd_soc_dapm_pre] = 0, |
74 | [snd_soc_dapm_adc] = 1, | |
75 | [snd_soc_dapm_hp] = 2, | |
1ca04065 | 76 | [snd_soc_dapm_spk] = 2, |
d88429a6 | 77 | [snd_soc_dapm_out_drv] = 2, |
38357ab2 MB |
78 | [snd_soc_dapm_pga] = 4, |
79 | [snd_soc_dapm_mixer_named_ctl] = 5, | |
e3d4dabd MB |
80 | [snd_soc_dapm_mixer] = 5, |
81 | [snd_soc_dapm_dac] = 6, | |
82 | [snd_soc_dapm_mic] = 7, | |
83 | [snd_soc_dapm_micbias] = 8, | |
84 | [snd_soc_dapm_mux] = 9, | |
24ff33ac | 85 | [snd_soc_dapm_virt_mux] = 9, |
e3d4dabd | 86 | [snd_soc_dapm_value_mux] = 9, |
010ff262 MB |
87 | [snd_soc_dapm_aif_in] = 10, |
88 | [snd_soc_dapm_aif_out] = 10, | |
62ea874a | 89 | [snd_soc_dapm_regulator_supply] = 11, |
010ff262 MB |
90 | [snd_soc_dapm_supply] = 11, |
91 | [snd_soc_dapm_post] = 12, | |
2b97eabc RP |
92 | }; |
93 | ||
12ef193d | 94 | static void pop_wait(u32 pop_time) |
15e4c72f MB |
95 | { |
96 | if (pop_time) | |
97 | schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time)); | |
98 | } | |
99 | ||
fd8d3bc0 | 100 | static void pop_dbg(struct device *dev, u32 pop_time, const char *fmt, ...) |
15e4c72f MB |
101 | { |
102 | va_list args; | |
fd8d3bc0 | 103 | char *buf; |
15e4c72f | 104 | |
fd8d3bc0 JN |
105 | if (!pop_time) |
106 | return; | |
15e4c72f | 107 | |
fd8d3bc0 JN |
108 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); |
109 | if (buf == NULL) | |
110 | return; | |
15e4c72f | 111 | |
fd8d3bc0 JN |
112 | va_start(args, fmt); |
113 | vsnprintf(buf, PAGE_SIZE, fmt, args); | |
9d01df06 | 114 | dev_info(dev, "%s", buf); |
15e4c72f | 115 | va_end(args); |
fd8d3bc0 JN |
116 | |
117 | kfree(buf); | |
15e4c72f MB |
118 | } |
119 | ||
db432b41 MB |
120 | static bool dapm_dirty_widget(struct snd_soc_dapm_widget *w) |
121 | { | |
122 | return !list_empty(&w->dirty); | |
123 | } | |
124 | ||
25c77c5f | 125 | void dapm_mark_dirty(struct snd_soc_dapm_widget *w, const char *reason) |
db432b41 | 126 | { |
75c1f891 MB |
127 | if (!dapm_dirty_widget(w)) { |
128 | dev_vdbg(w->dapm->dev, "Marking %s dirty due to %s\n", | |
129 | w->name, reason); | |
db432b41 | 130 | list_add_tail(&w->dirty, &w->dapm->card->dapm_dirty); |
75c1f891 | 131 | } |
db432b41 | 132 | } |
25c77c5f | 133 | EXPORT_SYMBOL_GPL(dapm_mark_dirty); |
db432b41 | 134 | |
2b97eabc | 135 | /* create a new dapm widget */ |
88cb4290 | 136 | static inline struct snd_soc_dapm_widget *dapm_cnew_widget( |
2b97eabc RP |
137 | const struct snd_soc_dapm_widget *_widget) |
138 | { | |
88cb4290 | 139 | return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL); |
2b97eabc RP |
140 | } |
141 | ||
4805608a LG |
142 | /* get snd_card from DAPM context */ |
143 | static inline struct snd_card *dapm_get_snd_card( | |
144 | struct snd_soc_dapm_context *dapm) | |
145 | { | |
146 | if (dapm->codec) | |
147 | return dapm->codec->card->snd_card; | |
148 | else if (dapm->platform) | |
149 | return dapm->platform->card->snd_card; | |
150 | else | |
151 | BUG(); | |
152 | ||
153 | /* unreachable */ | |
154 | return NULL; | |
155 | } | |
156 | ||
157 | /* get soc_card from DAPM context */ | |
158 | static inline struct snd_soc_card *dapm_get_soc_card( | |
159 | struct snd_soc_dapm_context *dapm) | |
160 | { | |
161 | if (dapm->codec) | |
162 | return dapm->codec->card; | |
163 | else if (dapm->platform) | |
164 | return dapm->platform->card; | |
165 | else | |
166 | BUG(); | |
167 | ||
168 | /* unreachable */ | |
169 | return NULL; | |
170 | } | |
171 | ||
6c120e19 LG |
172 | static void dapm_reset(struct snd_soc_card *card) |
173 | { | |
174 | struct snd_soc_dapm_widget *w; | |
175 | ||
176 | memset(&card->dapm_stats, 0, sizeof(card->dapm_stats)); | |
177 | ||
178 | list_for_each_entry(w, &card->widgets, list) { | |
179 | w->power_checked = false; | |
180 | w->inputs = -1; | |
181 | w->outputs = -1; | |
182 | } | |
183 | } | |
184 | ||
0445bdf4 LG |
185 | static int soc_widget_read(struct snd_soc_dapm_widget *w, int reg) |
186 | { | |
187 | if (w->codec) | |
188 | return snd_soc_read(w->codec, reg); | |
b7950641 LG |
189 | else if (w->platform) |
190 | return snd_soc_platform_read(w->platform, reg); | |
191 | ||
192 | dev_err(w->dapm->dev, "no valid widget read method\n"); | |
193 | return -1; | |
0445bdf4 LG |
194 | } |
195 | ||
196 | static int soc_widget_write(struct snd_soc_dapm_widget *w, int reg, int val) | |
197 | { | |
198 | if (w->codec) | |
199 | return snd_soc_write(w->codec, reg, val); | |
b7950641 LG |
200 | else if (w->platform) |
201 | return snd_soc_platform_write(w->platform, reg, val); | |
202 | ||
203 | dev_err(w->dapm->dev, "no valid widget write method\n"); | |
204 | return -1; | |
0445bdf4 LG |
205 | } |
206 | ||
207 | static int soc_widget_update_bits(struct snd_soc_dapm_widget *w, | |
208 | unsigned short reg, unsigned int mask, unsigned int value) | |
209 | { | |
8a713da8 | 210 | bool change; |
0445bdf4 LG |
211 | unsigned int old, new; |
212 | int ret; | |
213 | ||
8a713da8 MB |
214 | if (w->codec && w->codec->using_regmap) { |
215 | ret = regmap_update_bits_check(w->codec->control_data, | |
216 | reg, mask, value, &change); | |
217 | if (ret != 0) | |
218 | return ret; | |
219 | } else { | |
220 | ret = soc_widget_read(w, reg); | |
0445bdf4 LG |
221 | if (ret < 0) |
222 | return ret; | |
8a713da8 MB |
223 | |
224 | old = ret; | |
225 | new = (old & ~mask) | (value & mask); | |
226 | change = old != new; | |
227 | if (change) { | |
228 | ret = soc_widget_write(w, reg, new); | |
229 | if (ret < 0) | |
230 | return ret; | |
231 | } | |
0445bdf4 LG |
232 | } |
233 | ||
234 | return change; | |
235 | } | |
236 | ||
452c5eaa MB |
237 | /** |
238 | * snd_soc_dapm_set_bias_level - set the bias level for the system | |
ed5a4c47 | 239 | * @dapm: DAPM context |
452c5eaa MB |
240 | * @level: level to configure |
241 | * | |
242 | * Configure the bias (power) levels for the SoC audio device. | |
243 | * | |
244 | * Returns 0 for success else error. | |
245 | */ | |
ed5a4c47 | 246 | static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm, |
ce6120cc | 247 | enum snd_soc_bias_level level) |
452c5eaa | 248 | { |
ed5a4c47 | 249 | struct snd_soc_card *card = dapm->card; |
452c5eaa MB |
250 | int ret = 0; |
251 | ||
84e90930 MB |
252 | trace_snd_soc_bias_level_start(card, level); |
253 | ||
f0fba2ad | 254 | if (card && card->set_bias_level) |
d4c6005f | 255 | ret = card->set_bias_level(card, dapm, level); |
171ec6b0 MB |
256 | if (ret != 0) |
257 | goto out; | |
258 | ||
cc4c670a MB |
259 | if (dapm->codec) { |
260 | if (dapm->codec->driver->set_bias_level) | |
261 | ret = dapm->codec->driver->set_bias_level(dapm->codec, | |
262 | level); | |
263 | else | |
264 | dapm->bias_level = level; | |
265 | } | |
171ec6b0 MB |
266 | if (ret != 0) |
267 | goto out; | |
268 | ||
269 | if (card && card->set_bias_level_post) | |
d4c6005f | 270 | ret = card->set_bias_level_post(card, dapm, level); |
171ec6b0 | 271 | out: |
84e90930 MB |
272 | trace_snd_soc_bias_level_done(card, level); |
273 | ||
452c5eaa MB |
274 | return ret; |
275 | } | |
276 | ||
2b97eabc RP |
277 | /* set up initial codec paths */ |
278 | static void dapm_set_path_status(struct snd_soc_dapm_widget *w, | |
279 | struct snd_soc_dapm_path *p, int i) | |
280 | { | |
281 | switch (w->id) { | |
282 | case snd_soc_dapm_switch: | |
ca9c1aae IM |
283 | case snd_soc_dapm_mixer: |
284 | case snd_soc_dapm_mixer_named_ctl: { | |
2b97eabc | 285 | int val; |
4eaa9819 | 286 | struct soc_mixer_control *mc = (struct soc_mixer_control *) |
82cfecdc | 287 | w->kcontrol_news[i].private_value; |
815ecf8d JS |
288 | unsigned int reg = mc->reg; |
289 | unsigned int shift = mc->shift; | |
4eaa9819 | 290 | int max = mc->max; |
815ecf8d JS |
291 | unsigned int mask = (1 << fls(max)) - 1; |
292 | unsigned int invert = mc->invert; | |
2b97eabc | 293 | |
0445bdf4 | 294 | val = soc_widget_read(w, reg); |
2b97eabc RP |
295 | val = (val >> shift) & mask; |
296 | ||
297 | if ((invert && !val) || (!invert && val)) | |
298 | p->connect = 1; | |
299 | else | |
300 | p->connect = 0; | |
301 | } | |
302 | break; | |
303 | case snd_soc_dapm_mux: { | |
82cfecdc SW |
304 | struct soc_enum *e = (struct soc_enum *) |
305 | w->kcontrol_news[i].private_value; | |
2b97eabc RP |
306 | int val, item, bitmask; |
307 | ||
f8ba0b7b | 308 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
88d96086 | 309 | ; |
0445bdf4 | 310 | val = soc_widget_read(w, e->reg); |
2b97eabc RP |
311 | item = (val >> e->shift_l) & (bitmask - 1); |
312 | ||
313 | p->connect = 0; | |
f8ba0b7b | 314 | for (i = 0; i < e->max; i++) { |
2b97eabc RP |
315 | if (!(strcmp(p->name, e->texts[i])) && item == i) |
316 | p->connect = 1; | |
317 | } | |
318 | } | |
319 | break; | |
24ff33ac | 320 | case snd_soc_dapm_virt_mux: { |
82cfecdc SW |
321 | struct soc_enum *e = (struct soc_enum *) |
322 | w->kcontrol_news[i].private_value; | |
24ff33ac DP |
323 | |
324 | p->connect = 0; | |
325 | /* since a virtual mux has no backing registers to | |
326 | * decide which path to connect, it will try to match | |
327 | * with the first enumeration. This is to ensure | |
328 | * that the default mux choice (the first) will be | |
329 | * correctly powered up during initialization. | |
330 | */ | |
331 | if (!strcmp(p->name, e->texts[0])) | |
332 | p->connect = 1; | |
333 | } | |
334 | break; | |
2e72f8e3 | 335 | case snd_soc_dapm_value_mux: { |
74155556 | 336 | struct soc_enum *e = (struct soc_enum *) |
82cfecdc | 337 | w->kcontrol_news[i].private_value; |
2e72f8e3 PU |
338 | int val, item; |
339 | ||
0445bdf4 | 340 | val = soc_widget_read(w, e->reg); |
2e72f8e3 PU |
341 | val = (val >> e->shift_l) & e->mask; |
342 | for (item = 0; item < e->max; item++) { | |
343 | if (val == e->values[item]) | |
344 | break; | |
345 | } | |
346 | ||
347 | p->connect = 0; | |
348 | for (i = 0; i < e->max; i++) { | |
349 | if (!(strcmp(p->name, e->texts[i])) && item == i) | |
350 | p->connect = 1; | |
351 | } | |
352 | } | |
353 | break; | |
56563100 | 354 | /* does not affect routing - always connected */ |
2b97eabc | 355 | case snd_soc_dapm_pga: |
d88429a6 | 356 | case snd_soc_dapm_out_drv: |
2b97eabc RP |
357 | case snd_soc_dapm_output: |
358 | case snd_soc_dapm_adc: | |
359 | case snd_soc_dapm_input: | |
1ab97c8c | 360 | case snd_soc_dapm_siggen: |
2b97eabc RP |
361 | case snd_soc_dapm_dac: |
362 | case snd_soc_dapm_micbias: | |
363 | case snd_soc_dapm_vmid: | |
246d0a17 | 364 | case snd_soc_dapm_supply: |
62ea874a | 365 | case snd_soc_dapm_regulator_supply: |
010ff262 MB |
366 | case snd_soc_dapm_aif_in: |
367 | case snd_soc_dapm_aif_out: | |
2b97eabc RP |
368 | case snd_soc_dapm_hp: |
369 | case snd_soc_dapm_mic: | |
370 | case snd_soc_dapm_spk: | |
371 | case snd_soc_dapm_line: | |
56563100 MB |
372 | p->connect = 1; |
373 | break; | |
374 | /* does affect routing - dynamically connected */ | |
2b97eabc RP |
375 | case snd_soc_dapm_pre: |
376 | case snd_soc_dapm_post: | |
377 | p->connect = 0; | |
378 | break; | |
379 | } | |
380 | } | |
381 | ||
74b8f955 | 382 | /* connect mux widget to its interconnecting audio paths */ |
ce6120cc | 383 | static int dapm_connect_mux(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
384 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, |
385 | struct snd_soc_dapm_path *path, const char *control_name, | |
386 | const struct snd_kcontrol_new *kcontrol) | |
387 | { | |
388 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
389 | int i; | |
390 | ||
f8ba0b7b | 391 | for (i = 0; i < e->max; i++) { |
2b97eabc | 392 | if (!(strcmp(control_name, e->texts[i]))) { |
8ddab3f5 | 393 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
394 | list_add(&path->list_sink, &dest->sources); |
395 | list_add(&path->list_source, &src->sinks); | |
396 | path->name = (char*)e->texts[i]; | |
397 | dapm_set_path_status(dest, path, 0); | |
398 | return 0; | |
399 | } | |
400 | } | |
401 | ||
402 | return -ENODEV; | |
403 | } | |
404 | ||
74b8f955 | 405 | /* connect mixer widget to its interconnecting audio paths */ |
ce6120cc | 406 | static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
407 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, |
408 | struct snd_soc_dapm_path *path, const char *control_name) | |
409 | { | |
410 | int i; | |
411 | ||
412 | /* search for mixer kcontrol */ | |
413 | for (i = 0; i < dest->num_kcontrols; i++) { | |
82cfecdc | 414 | if (!strcmp(control_name, dest->kcontrol_news[i].name)) { |
8ddab3f5 | 415 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
416 | list_add(&path->list_sink, &dest->sources); |
417 | list_add(&path->list_source, &src->sinks); | |
82cfecdc | 418 | path->name = dest->kcontrol_news[i].name; |
2b97eabc RP |
419 | dapm_set_path_status(dest, path, i); |
420 | return 0; | |
421 | } | |
422 | } | |
423 | return -ENODEV; | |
424 | } | |
425 | ||
af46800b | 426 | static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context *dapm, |
1007da06 | 427 | struct snd_soc_dapm_widget *kcontrolw, |
af46800b SW |
428 | const struct snd_kcontrol_new *kcontrol_new, |
429 | struct snd_kcontrol **kcontrol) | |
430 | { | |
431 | struct snd_soc_dapm_widget *w; | |
432 | int i; | |
433 | ||
434 | *kcontrol = NULL; | |
435 | ||
436 | list_for_each_entry(w, &dapm->card->widgets, list) { | |
1007da06 SW |
437 | if (w == kcontrolw || w->dapm != kcontrolw->dapm) |
438 | continue; | |
af46800b SW |
439 | for (i = 0; i < w->num_kcontrols; i++) { |
440 | if (&w->kcontrol_news[i] == kcontrol_new) { | |
441 | if (w->kcontrols) | |
442 | *kcontrol = w->kcontrols[i]; | |
443 | return 1; | |
444 | } | |
445 | } | |
446 | } | |
447 | ||
448 | return 0; | |
449 | } | |
450 | ||
2b97eabc | 451 | /* create new dapm mixer control */ |
4b80b8c2 | 452 | static int dapm_new_mixer(struct snd_soc_dapm_widget *w) |
2b97eabc | 453 | { |
4b80b8c2 | 454 | struct snd_soc_dapm_context *dapm = w->dapm; |
2b97eabc | 455 | int i, ret = 0; |
3e5ff4df | 456 | size_t name_len, prefix_len; |
2b97eabc | 457 | struct snd_soc_dapm_path *path; |
12ea2c78 | 458 | struct snd_card *card = dapm->card->snd_card; |
efb7ac3f | 459 | const char *prefix; |
fafd2176 SW |
460 | struct snd_soc_dapm_widget_list *wlist; |
461 | size_t wlistsize; | |
efb7ac3f MB |
462 | |
463 | if (dapm->codec) | |
464 | prefix = dapm->codec->name_prefix; | |
465 | else | |
466 | prefix = NULL; | |
2b97eabc | 467 | |
3e5ff4df MB |
468 | if (prefix) |
469 | prefix_len = strlen(prefix) + 1; | |
470 | else | |
471 | prefix_len = 0; | |
472 | ||
2b97eabc RP |
473 | /* add kcontrol */ |
474 | for (i = 0; i < w->num_kcontrols; i++) { | |
475 | ||
476 | /* match name */ | |
477 | list_for_each_entry(path, &w->sources, list_sink) { | |
478 | ||
479 | /* mixer/mux paths name must match control name */ | |
82cfecdc | 480 | if (path->name != (char *)w->kcontrol_news[i].name) |
2b97eabc RP |
481 | continue; |
482 | ||
82cd8764 LPC |
483 | if (w->kcontrols[i]) { |
484 | path->kcontrol = w->kcontrols[i]; | |
485 | continue; | |
486 | } | |
487 | ||
fafd2176 SW |
488 | wlistsize = sizeof(struct snd_soc_dapm_widget_list) + |
489 | sizeof(struct snd_soc_dapm_widget *), | |
490 | wlist = kzalloc(wlistsize, GFP_KERNEL); | |
491 | if (wlist == NULL) { | |
492 | dev_err(dapm->dev, | |
493 | "asoc: can't allocate widget list for %s\n", | |
494 | w->name); | |
495 | return -ENOMEM; | |
496 | } | |
497 | wlist->num_widgets = 1; | |
498 | wlist->widgets[0] = w; | |
499 | ||
ca9c1aae IM |
500 | /* add dapm control with long name. |
501 | * for dapm_mixer this is the concatenation of the | |
502 | * mixer and kcontrol name. | |
503 | * for dapm_mixer_named_ctl this is simply the | |
504 | * kcontrol name. | |
505 | */ | |
82cfecdc | 506 | name_len = strlen(w->kcontrol_news[i].name) + 1; |
07495f3e | 507 | if (w->id != snd_soc_dapm_mixer_named_ctl) |
ca9c1aae IM |
508 | name_len += 1 + strlen(w->name); |
509 | ||
219b93f5 | 510 | path->long_name = kmalloc(name_len, GFP_KERNEL); |
ca9c1aae | 511 | |
fafd2176 SW |
512 | if (path->long_name == NULL) { |
513 | kfree(wlist); | |
2b97eabc | 514 | return -ENOMEM; |
fafd2176 | 515 | } |
2b97eabc | 516 | |
ca9c1aae | 517 | switch (w->id) { |
ca9c1aae | 518 | default: |
3e5ff4df MB |
519 | /* The control will get a prefix from |
520 | * the control creation process but | |
521 | * we're also using the same prefix | |
522 | * for widgets so cut the prefix off | |
523 | * the front of the widget name. | |
524 | */ | |
ca9c1aae | 525 | snprintf(path->long_name, name_len, "%s %s", |
3e5ff4df | 526 | w->name + prefix_len, |
82cfecdc | 527 | w->kcontrol_news[i].name); |
07495f3e | 528 | break; |
ca9c1aae IM |
529 | case snd_soc_dapm_mixer_named_ctl: |
530 | snprintf(path->long_name, name_len, "%s", | |
82cfecdc | 531 | w->kcontrol_news[i].name); |
07495f3e | 532 | break; |
ca9c1aae IM |
533 | } |
534 | ||
219b93f5 MB |
535 | path->long_name[name_len - 1] = '\0'; |
536 | ||
fafd2176 SW |
537 | path->kcontrol = snd_soc_cnew(&w->kcontrol_news[i], |
538 | wlist, path->long_name, | |
539 | prefix); | |
ce6120cc | 540 | ret = snd_ctl_add(card, path->kcontrol); |
2b97eabc | 541 | if (ret < 0) { |
f7d41ae8 JN |
542 | dev_err(dapm->dev, |
543 | "asoc: failed to add dapm kcontrol %s: %d\n", | |
544 | path->long_name, ret); | |
fafd2176 | 545 | kfree(wlist); |
2b97eabc RP |
546 | kfree(path->long_name); |
547 | path->long_name = NULL; | |
548 | return ret; | |
549 | } | |
fad59888 | 550 | w->kcontrols[i] = path->kcontrol; |
2b97eabc RP |
551 | } |
552 | } | |
553 | return ret; | |
554 | } | |
555 | ||
556 | /* create new dapm mux control */ | |
4b80b8c2 | 557 | static int dapm_new_mux(struct snd_soc_dapm_widget *w) |
2b97eabc | 558 | { |
4b80b8c2 | 559 | struct snd_soc_dapm_context *dapm = w->dapm; |
2b97eabc RP |
560 | struct snd_soc_dapm_path *path = NULL; |
561 | struct snd_kcontrol *kcontrol; | |
12ea2c78 | 562 | struct snd_card *card = dapm->card->snd_card; |
efb7ac3f | 563 | const char *prefix; |
3e5ff4df | 564 | size_t prefix_len; |
af46800b | 565 | int ret; |
fafd2176 | 566 | struct snd_soc_dapm_widget_list *wlist; |
af46800b | 567 | int shared, wlistentries; |
fafd2176 | 568 | size_t wlistsize; |
af46800b | 569 | char *name; |
2b97eabc | 570 | |
af46800b SW |
571 | if (w->num_kcontrols != 1) { |
572 | dev_err(dapm->dev, | |
573 | "asoc: mux %s has incorrect number of controls\n", | |
574 | w->name); | |
2b97eabc RP |
575 | return -EINVAL; |
576 | } | |
577 | ||
1007da06 | 578 | shared = dapm_is_shared_kcontrol(dapm, w, &w->kcontrol_news[0], |
af46800b SW |
579 | &kcontrol); |
580 | if (kcontrol) { | |
581 | wlist = kcontrol->private_data; | |
582 | wlistentries = wlist->num_widgets + 1; | |
583 | } else { | |
584 | wlist = NULL; | |
585 | wlistentries = 1; | |
586 | } | |
fafd2176 | 587 | wlistsize = sizeof(struct snd_soc_dapm_widget_list) + |
af46800b SW |
588 | wlistentries * sizeof(struct snd_soc_dapm_widget *), |
589 | wlist = krealloc(wlist, wlistsize, GFP_KERNEL); | |
fafd2176 SW |
590 | if (wlist == NULL) { |
591 | dev_err(dapm->dev, | |
592 | "asoc: can't allocate widget list for %s\n", w->name); | |
593 | return -ENOMEM; | |
594 | } | |
af46800b SW |
595 | wlist->num_widgets = wlistentries; |
596 | wlist->widgets[wlistentries - 1] = w; | |
efb7ac3f | 597 | |
af46800b SW |
598 | if (!kcontrol) { |
599 | if (dapm->codec) | |
600 | prefix = dapm->codec->name_prefix; | |
601 | else | |
602 | prefix = NULL; | |
603 | ||
604 | if (shared) { | |
605 | name = w->kcontrol_news[0].name; | |
606 | prefix_len = 0; | |
607 | } else { | |
608 | name = w->name; | |
609 | if (prefix) | |
610 | prefix_len = strlen(prefix) + 1; | |
611 | else | |
612 | prefix_len = 0; | |
613 | } | |
3e5ff4df | 614 | |
af46800b SW |
615 | /* |
616 | * The control will get a prefix from the control creation | |
617 | * process but we're also using the same prefix for widgets so | |
618 | * cut the prefix off the front of the widget name. | |
619 | */ | |
620 | kcontrol = snd_soc_cnew(&w->kcontrol_news[0], wlist, | |
621 | name + prefix_len, prefix); | |
622 | ret = snd_ctl_add(card, kcontrol); | |
623 | if (ret < 0) { | |
53daf208 MB |
624 | dev_err(dapm->dev, "failed to add kcontrol %s: %d\n", |
625 | w->name, ret); | |
af46800b SW |
626 | kfree(wlist); |
627 | return ret; | |
628 | } | |
629 | } | |
ce6120cc | 630 | |
af46800b | 631 | kcontrol->private_data = wlist; |
2b97eabc | 632 | |
fad59888 SW |
633 | w->kcontrols[0] = kcontrol; |
634 | ||
2b97eabc RP |
635 | list_for_each_entry(path, &w->sources, list_sink) |
636 | path->kcontrol = kcontrol; | |
637 | ||
af46800b | 638 | return 0; |
2b97eabc RP |
639 | } |
640 | ||
641 | /* create new dapm volume control */ | |
4b80b8c2 | 642 | static int dapm_new_pga(struct snd_soc_dapm_widget *w) |
2b97eabc | 643 | { |
a6c65736 | 644 | if (w->num_kcontrols) |
f7d41ae8 JN |
645 | dev_err(w->dapm->dev, |
646 | "asoc: PGA controls not supported: '%s'\n", w->name); | |
2b97eabc | 647 | |
a6c65736 | 648 | return 0; |
2b97eabc RP |
649 | } |
650 | ||
651 | /* reset 'walked' bit for each dapm path */ | |
ce6120cc | 652 | static inline void dapm_clear_walk(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
653 | { |
654 | struct snd_soc_dapm_path *p; | |
655 | ||
8ddab3f5 | 656 | list_for_each_entry(p, &dapm->card->paths, list) |
2b97eabc RP |
657 | p->walked = 0; |
658 | } | |
659 | ||
9949788b MB |
660 | /* We implement power down on suspend by checking the power state of |
661 | * the ALSA card - when we are suspending the ALSA state for the card | |
662 | * is set to D3. | |
663 | */ | |
664 | static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget) | |
665 | { | |
12ea2c78 | 666 | int level = snd_power_get_state(widget->dapm->card->snd_card); |
9949788b | 667 | |
f0fba2ad | 668 | switch (level) { |
9949788b MB |
669 | case SNDRV_CTL_POWER_D3hot: |
670 | case SNDRV_CTL_POWER_D3cold: | |
1547aba9 | 671 | if (widget->ignore_suspend) |
f7d41ae8 JN |
672 | dev_dbg(widget->dapm->dev, "%s ignoring suspend\n", |
673 | widget->name); | |
1547aba9 | 674 | return widget->ignore_suspend; |
9949788b MB |
675 | default: |
676 | return 1; | |
677 | } | |
678 | } | |
679 | ||
2b97eabc RP |
680 | /* |
681 | * Recursively check for a completed path to an active or physically connected | |
682 | * output widget. Returns number of complete paths. | |
683 | */ | |
684 | static int is_connected_output_ep(struct snd_soc_dapm_widget *widget) | |
685 | { | |
686 | struct snd_soc_dapm_path *path; | |
687 | int con = 0; | |
688 | ||
024dc078 MB |
689 | if (widget->outputs >= 0) |
690 | return widget->outputs; | |
691 | ||
de02d078 MB |
692 | DAPM_UPDATE_STAT(widget, path_checks); |
693 | ||
62ea874a MB |
694 | switch (widget->id) { |
695 | case snd_soc_dapm_supply: | |
696 | case snd_soc_dapm_regulator_supply: | |
246d0a17 | 697 | return 0; |
62ea874a MB |
698 | default: |
699 | break; | |
700 | } | |
246d0a17 | 701 | |
010ff262 MB |
702 | switch (widget->id) { |
703 | case snd_soc_dapm_adc: | |
704 | case snd_soc_dapm_aif_out: | |
024dc078 MB |
705 | if (widget->active) { |
706 | widget->outputs = snd_soc_dapm_suspend_check(widget); | |
707 | return widget->outputs; | |
708 | } | |
010ff262 MB |
709 | default: |
710 | break; | |
711 | } | |
2b97eabc RP |
712 | |
713 | if (widget->connected) { | |
714 | /* connected pin ? */ | |
024dc078 MB |
715 | if (widget->id == snd_soc_dapm_output && !widget->ext) { |
716 | widget->outputs = snd_soc_dapm_suspend_check(widget); | |
717 | return widget->outputs; | |
718 | } | |
2b97eabc RP |
719 | |
720 | /* connected jack or spk ? */ | |
024dc078 MB |
721 | if (widget->id == snd_soc_dapm_hp || |
722 | widget->id == snd_soc_dapm_spk || | |
723 | (widget->id == snd_soc_dapm_line && | |
724 | !list_empty(&widget->sources))) { | |
725 | widget->outputs = snd_soc_dapm_suspend_check(widget); | |
726 | return widget->outputs; | |
727 | } | |
2b97eabc RP |
728 | } |
729 | ||
730 | list_for_each_entry(path, &widget->sinks, list_source) { | |
e56235e0 MB |
731 | DAPM_UPDATE_STAT(widget, neighbour_checks); |
732 | ||
bf3a9e13 MB |
733 | if (path->weak) |
734 | continue; | |
735 | ||
2b97eabc RP |
736 | if (path->walked) |
737 | continue; | |
738 | ||
739 | if (path->sink && path->connect) { | |
740 | path->walked = 1; | |
741 | con += is_connected_output_ep(path->sink); | |
742 | } | |
743 | } | |
744 | ||
024dc078 MB |
745 | widget->outputs = con; |
746 | ||
2b97eabc RP |
747 | return con; |
748 | } | |
749 | ||
750 | /* | |
751 | * Recursively check for a completed path to an active or physically connected | |
752 | * input widget. Returns number of complete paths. | |
753 | */ | |
754 | static int is_connected_input_ep(struct snd_soc_dapm_widget *widget) | |
755 | { | |
756 | struct snd_soc_dapm_path *path; | |
757 | int con = 0; | |
758 | ||
024dc078 MB |
759 | if (widget->inputs >= 0) |
760 | return widget->inputs; | |
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 | |
2b97eabc | 772 | /* active stream ? */ |
010ff262 MB |
773 | switch (widget->id) { |
774 | case snd_soc_dapm_dac: | |
775 | case snd_soc_dapm_aif_in: | |
024dc078 MB |
776 | if (widget->active) { |
777 | widget->inputs = snd_soc_dapm_suspend_check(widget); | |
778 | return widget->inputs; | |
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_input && !widget->ext) { |
787 | widget->inputs = snd_soc_dapm_suspend_check(widget); | |
788 | return widget->inputs; | |
789 | } | |
2b97eabc RP |
790 | |
791 | /* connected VMID/Bias for lower pops */ | |
024dc078 MB |
792 | if (widget->id == snd_soc_dapm_vmid) { |
793 | widget->inputs = snd_soc_dapm_suspend_check(widget); | |
794 | return widget->inputs; | |
795 | } | |
2b97eabc RP |
796 | |
797 | /* connected jack ? */ | |
eaeae5d9 | 798 | if (widget->id == snd_soc_dapm_mic || |
024dc078 MB |
799 | (widget->id == snd_soc_dapm_line && |
800 | !list_empty(&widget->sinks))) { | |
801 | widget->inputs = snd_soc_dapm_suspend_check(widget); | |
802 | return widget->inputs; | |
803 | } | |
804 | ||
1ab97c8c MB |
805 | /* signal generator */ |
806 | if (widget->id == snd_soc_dapm_siggen) { | |
807 | widget->inputs = snd_soc_dapm_suspend_check(widget); | |
808 | return widget->inputs; | |
809 | } | |
2b97eabc RP |
810 | } |
811 | ||
812 | list_for_each_entry(path, &widget->sources, list_sink) { | |
e56235e0 MB |
813 | DAPM_UPDATE_STAT(widget, neighbour_checks); |
814 | ||
bf3a9e13 MB |
815 | if (path->weak) |
816 | continue; | |
817 | ||
2b97eabc RP |
818 | if (path->walked) |
819 | continue; | |
820 | ||
821 | if (path->source && path->connect) { | |
822 | path->walked = 1; | |
823 | con += is_connected_input_ep(path->source); | |
824 | } | |
825 | } | |
826 | ||
024dc078 MB |
827 | widget->inputs = con; |
828 | ||
2b97eabc RP |
829 | return con; |
830 | } | |
831 | ||
e2be2ccf JN |
832 | /* |
833 | * Handler for generic register modifier widget. | |
834 | */ | |
835 | int dapm_reg_event(struct snd_soc_dapm_widget *w, | |
836 | struct snd_kcontrol *kcontrol, int event) | |
837 | { | |
838 | unsigned int val; | |
839 | ||
840 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
841 | val = w->on_val; | |
842 | else | |
843 | val = w->off_val; | |
844 | ||
0445bdf4 | 845 | soc_widget_update_bits(w, -(w->reg + 1), |
e2be2ccf JN |
846 | w->mask << w->shift, val << w->shift); |
847 | ||
848 | return 0; | |
849 | } | |
11589418 | 850 | EXPORT_SYMBOL_GPL(dapm_reg_event); |
e2be2ccf | 851 | |
62ea874a MB |
852 | /* |
853 | * Handler for regulator supply widget. | |
854 | */ | |
855 | int dapm_regulator_event(struct snd_soc_dapm_widget *w, | |
856 | struct snd_kcontrol *kcontrol, int event) | |
857 | { | |
858 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
859 | return regulator_enable(w->priv); | |
860 | else | |
861 | return regulator_disable_deferred(w->priv, w->shift); | |
862 | } | |
863 | EXPORT_SYMBOL_GPL(dapm_regulator_event); | |
864 | ||
d805002b MB |
865 | static int dapm_widget_power_check(struct snd_soc_dapm_widget *w) |
866 | { | |
9b8a83b2 MB |
867 | if (w->power_checked) |
868 | return w->new_power; | |
869 | ||
d805002b | 870 | if (w->force) |
9b8a83b2 | 871 | w->new_power = 1; |
d805002b | 872 | else |
9b8a83b2 MB |
873 | w->new_power = w->power_check(w); |
874 | ||
875 | w->power_checked = true; | |
876 | ||
877 | return w->new_power; | |
d805002b MB |
878 | } |
879 | ||
cd0f2d47 MB |
880 | /* Generic check to see if a widget should be powered. |
881 | */ | |
882 | static int dapm_generic_check_power(struct snd_soc_dapm_widget *w) | |
883 | { | |
884 | int in, out; | |
885 | ||
de02d078 MB |
886 | DAPM_UPDATE_STAT(w, power_checks); |
887 | ||
cd0f2d47 | 888 | in = is_connected_input_ep(w); |
ce6120cc | 889 | dapm_clear_walk(w->dapm); |
cd0f2d47 | 890 | out = is_connected_output_ep(w); |
ce6120cc | 891 | dapm_clear_walk(w->dapm); |
cd0f2d47 MB |
892 | return out != 0 && in != 0; |
893 | } | |
894 | ||
6ea31b9f MB |
895 | /* Check to see if an ADC has power */ |
896 | static int dapm_adc_check_power(struct snd_soc_dapm_widget *w) | |
897 | { | |
898 | int in; | |
899 | ||
de02d078 MB |
900 | DAPM_UPDATE_STAT(w, power_checks); |
901 | ||
6ea31b9f MB |
902 | if (w->active) { |
903 | in = is_connected_input_ep(w); | |
ce6120cc | 904 | dapm_clear_walk(w->dapm); |
6ea31b9f MB |
905 | return in != 0; |
906 | } else { | |
907 | return dapm_generic_check_power(w); | |
908 | } | |
909 | } | |
910 | ||
911 | /* Check to see if a DAC has power */ | |
912 | static int dapm_dac_check_power(struct snd_soc_dapm_widget *w) | |
913 | { | |
914 | int out; | |
915 | ||
de02d078 MB |
916 | DAPM_UPDATE_STAT(w, power_checks); |
917 | ||
6ea31b9f MB |
918 | if (w->active) { |
919 | out = is_connected_output_ep(w); | |
ce6120cc | 920 | dapm_clear_walk(w->dapm); |
6ea31b9f MB |
921 | return out != 0; |
922 | } else { | |
923 | return dapm_generic_check_power(w); | |
924 | } | |
925 | } | |
926 | ||
246d0a17 MB |
927 | /* Check to see if a power supply is needed */ |
928 | static int dapm_supply_check_power(struct snd_soc_dapm_widget *w) | |
929 | { | |
930 | struct snd_soc_dapm_path *path; | |
246d0a17 | 931 | |
de02d078 MB |
932 | DAPM_UPDATE_STAT(w, power_checks); |
933 | ||
246d0a17 MB |
934 | /* Check if one of our outputs is connected */ |
935 | list_for_each_entry(path, &w->sinks, list_source) { | |
a8fdac83 MB |
936 | DAPM_UPDATE_STAT(w, neighbour_checks); |
937 | ||
bf3a9e13 MB |
938 | if (path->weak) |
939 | continue; | |
940 | ||
215edda3 MB |
941 | if (path->connected && |
942 | !path->connected(path->source, path->sink)) | |
943 | continue; | |
944 | ||
3017358a MB |
945 | if (!path->sink) |
946 | continue; | |
947 | ||
f68d7e16 MB |
948 | if (dapm_widget_power_check(path->sink)) |
949 | return 1; | |
246d0a17 MB |
950 | } |
951 | ||
ce6120cc | 952 | dapm_clear_walk(w->dapm); |
246d0a17 | 953 | |
f68d7e16 | 954 | return 0; |
246d0a17 MB |
955 | } |
956 | ||
35c64bca MB |
957 | static int dapm_always_on_check_power(struct snd_soc_dapm_widget *w) |
958 | { | |
959 | return 1; | |
960 | } | |
961 | ||
38357ab2 MB |
962 | static int dapm_seq_compare(struct snd_soc_dapm_widget *a, |
963 | struct snd_soc_dapm_widget *b, | |
828a842f | 964 | bool power_up) |
42aa3418 | 965 | { |
828a842f MB |
966 | int *sort; |
967 | ||
968 | if (power_up) | |
969 | sort = dapm_up_seq; | |
970 | else | |
971 | sort = dapm_down_seq; | |
972 | ||
38357ab2 MB |
973 | if (sort[a->id] != sort[b->id]) |
974 | return sort[a->id] - sort[b->id]; | |
20e4859d MB |
975 | if (a->subseq != b->subseq) { |
976 | if (power_up) | |
977 | return a->subseq - b->subseq; | |
978 | else | |
979 | return b->subseq - a->subseq; | |
980 | } | |
b22ead2a MB |
981 | if (a->reg != b->reg) |
982 | return a->reg - b->reg; | |
84dab567 MB |
983 | if (a->dapm != b->dapm) |
984 | return (unsigned long)a->dapm - (unsigned long)b->dapm; | |
42aa3418 | 985 | |
38357ab2 MB |
986 | return 0; |
987 | } | |
42aa3418 | 988 | |
38357ab2 MB |
989 | /* Insert a widget in order into a DAPM power sequence. */ |
990 | static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget, | |
991 | struct list_head *list, | |
828a842f | 992 | bool power_up) |
38357ab2 MB |
993 | { |
994 | struct snd_soc_dapm_widget *w; | |
995 | ||
996 | list_for_each_entry(w, list, power_list) | |
828a842f | 997 | if (dapm_seq_compare(new_widget, w, power_up) < 0) { |
38357ab2 MB |
998 | list_add_tail(&new_widget->power_list, &w->power_list); |
999 | return; | |
1000 | } | |
1001 | ||
1002 | list_add_tail(&new_widget->power_list, list); | |
1003 | } | |
1004 | ||
68f89ad8 MB |
1005 | static void dapm_seq_check_event(struct snd_soc_dapm_context *dapm, |
1006 | struct snd_soc_dapm_widget *w, int event) | |
1007 | { | |
1008 | struct snd_soc_card *card = dapm->card; | |
1009 | const char *ev_name; | |
1010 | int power, ret; | |
1011 | ||
1012 | switch (event) { | |
1013 | case SND_SOC_DAPM_PRE_PMU: | |
1014 | ev_name = "PRE_PMU"; | |
1015 | power = 1; | |
1016 | break; | |
1017 | case SND_SOC_DAPM_POST_PMU: | |
1018 | ev_name = "POST_PMU"; | |
1019 | power = 1; | |
1020 | break; | |
1021 | case SND_SOC_DAPM_PRE_PMD: | |
1022 | ev_name = "PRE_PMD"; | |
1023 | power = 0; | |
1024 | break; | |
1025 | case SND_SOC_DAPM_POST_PMD: | |
1026 | ev_name = "POST_PMD"; | |
1027 | power = 0; | |
1028 | break; | |
1029 | default: | |
1030 | BUG(); | |
1031 | return; | |
1032 | } | |
1033 | ||
1034 | if (w->power != power) | |
1035 | return; | |
1036 | ||
1037 | if (w->event && (w->event_flags & event)) { | |
1038 | pop_dbg(dapm->dev, card->pop_time, "pop test : %s %s\n", | |
1039 | w->name, ev_name); | |
84e90930 | 1040 | trace_snd_soc_dapm_widget_event_start(w, event); |
68f89ad8 | 1041 | ret = w->event(w, NULL, event); |
84e90930 | 1042 | trace_snd_soc_dapm_widget_event_done(w, event); |
68f89ad8 MB |
1043 | if (ret < 0) |
1044 | pr_err("%s: %s event failed: %d\n", | |
1045 | ev_name, w->name, ret); | |
1046 | } | |
1047 | } | |
1048 | ||
b22ead2a | 1049 | /* Apply the coalesced changes from a DAPM sequence */ |
ce6120cc | 1050 | static void dapm_seq_run_coalesced(struct snd_soc_dapm_context *dapm, |
b22ead2a | 1051 | struct list_head *pending) |
163cac06 | 1052 | { |
3a45b867 | 1053 | struct snd_soc_card *card = dapm->card; |
68f89ad8 MB |
1054 | struct snd_soc_dapm_widget *w; |
1055 | int reg, power; | |
b22ead2a MB |
1056 | unsigned int value = 0; |
1057 | unsigned int mask = 0; | |
1058 | unsigned int cur_mask; | |
1059 | ||
1060 | reg = list_first_entry(pending, struct snd_soc_dapm_widget, | |
1061 | power_list)->reg; | |
1062 | ||
1063 | list_for_each_entry(w, pending, power_list) { | |
1064 | cur_mask = 1 << w->shift; | |
1065 | BUG_ON(reg != w->reg); | |
1066 | ||
1067 | if (w->invert) | |
1068 | power = !w->power; | |
1069 | else | |
1070 | power = w->power; | |
1071 | ||
1072 | mask |= cur_mask; | |
1073 | if (power) | |
1074 | value |= cur_mask; | |
1075 | ||
fd8d3bc0 | 1076 | pop_dbg(dapm->dev, card->pop_time, |
b22ead2a MB |
1077 | "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n", |
1078 | w->name, reg, value, mask); | |
81628103 | 1079 | |
68f89ad8 MB |
1080 | /* Check for events */ |
1081 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMU); | |
1082 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMD); | |
81628103 MB |
1083 | } |
1084 | ||
1085 | if (reg >= 0) { | |
29376bc7 MB |
1086 | /* Any widget will do, they should all be updating the |
1087 | * same register. | |
1088 | */ | |
1089 | w = list_first_entry(pending, struct snd_soc_dapm_widget, | |
1090 | power_list); | |
1091 | ||
fd8d3bc0 | 1092 | pop_dbg(dapm->dev, card->pop_time, |
81628103 | 1093 | "pop test : Applying 0x%x/0x%x to %x in %dms\n", |
3a45b867 JN |
1094 | value, mask, reg, card->pop_time); |
1095 | pop_wait(card->pop_time); | |
0445bdf4 | 1096 | soc_widget_update_bits(w, reg, mask, value); |
b22ead2a MB |
1097 | } |
1098 | ||
81628103 | 1099 | list_for_each_entry(w, pending, power_list) { |
68f89ad8 MB |
1100 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMU); |
1101 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMD); | |
81628103 | 1102 | } |
b22ead2a | 1103 | } |
42aa3418 | 1104 | |
b22ead2a MB |
1105 | /* Apply a DAPM power sequence. |
1106 | * | |
1107 | * We walk over a pre-sorted list of widgets to apply power to. In | |
1108 | * order to minimise the number of writes to the device required | |
1109 | * multiple widgets will be updated in a single write where possible. | |
1110 | * Currently anything that requires more than a single write is not | |
1111 | * handled. | |
1112 | */ | |
ce6120cc | 1113 | static void dapm_seq_run(struct snd_soc_dapm_context *dapm, |
828a842f | 1114 | struct list_head *list, int event, bool power_up) |
b22ead2a MB |
1115 | { |
1116 | struct snd_soc_dapm_widget *w, *n; | |
1117 | LIST_HEAD(pending); | |
1118 | int cur_sort = -1; | |
20e4859d | 1119 | int cur_subseq = -1; |
b22ead2a | 1120 | int cur_reg = SND_SOC_NOPM; |
7be31be8 | 1121 | struct snd_soc_dapm_context *cur_dapm = NULL; |
474b62d6 | 1122 | int ret, i; |
828a842f MB |
1123 | int *sort; |
1124 | ||
1125 | if (power_up) | |
1126 | sort = dapm_up_seq; | |
1127 | else | |
1128 | sort = dapm_down_seq; | |
163cac06 | 1129 | |
b22ead2a MB |
1130 | list_for_each_entry_safe(w, n, list, power_list) { |
1131 | ret = 0; | |
1132 | ||
1133 | /* Do we need to apply any queued changes? */ | |
7be31be8 | 1134 | if (sort[w->id] != cur_sort || w->reg != cur_reg || |
20e4859d | 1135 | w->dapm != cur_dapm || w->subseq != cur_subseq) { |
b22ead2a | 1136 | if (!list_empty(&pending)) |
7be31be8 | 1137 | dapm_seq_run_coalesced(cur_dapm, &pending); |
b22ead2a | 1138 | |
474b62d6 MB |
1139 | if (cur_dapm && cur_dapm->seq_notifier) { |
1140 | for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++) | |
1141 | if (sort[i] == cur_sort) | |
1142 | cur_dapm->seq_notifier(cur_dapm, | |
f85a9e0d MB |
1143 | i, |
1144 | cur_subseq); | |
474b62d6 MB |
1145 | } |
1146 | ||
b22ead2a MB |
1147 | INIT_LIST_HEAD(&pending); |
1148 | cur_sort = -1; | |
b0b3e6f8 | 1149 | cur_subseq = INT_MIN; |
b22ead2a | 1150 | cur_reg = SND_SOC_NOPM; |
7be31be8 | 1151 | cur_dapm = NULL; |
b22ead2a MB |
1152 | } |
1153 | ||
163cac06 MB |
1154 | switch (w->id) { |
1155 | case snd_soc_dapm_pre: | |
1156 | if (!w->event) | |
b22ead2a MB |
1157 | list_for_each_entry_safe_continue(w, n, list, |
1158 | power_list); | |
163cac06 | 1159 | |
b22ead2a | 1160 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
1161 | ret = w->event(w, |
1162 | NULL, SND_SOC_DAPM_PRE_PMU); | |
b22ead2a | 1163 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
1164 | ret = w->event(w, |
1165 | NULL, SND_SOC_DAPM_PRE_PMD); | |
163cac06 MB |
1166 | break; |
1167 | ||
1168 | case snd_soc_dapm_post: | |
1169 | if (!w->event) | |
b22ead2a MB |
1170 | list_for_each_entry_safe_continue(w, n, list, |
1171 | power_list); | |
163cac06 | 1172 | |
b22ead2a | 1173 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
1174 | ret = w->event(w, |
1175 | NULL, SND_SOC_DAPM_POST_PMU); | |
b22ead2a | 1176 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
1177 | ret = w->event(w, |
1178 | NULL, SND_SOC_DAPM_POST_PMD); | |
163cac06 MB |
1179 | break; |
1180 | ||
b22ead2a | 1181 | default: |
81628103 MB |
1182 | /* Queue it up for application */ |
1183 | cur_sort = sort[w->id]; | |
20e4859d | 1184 | cur_subseq = w->subseq; |
81628103 | 1185 | cur_reg = w->reg; |
7be31be8 | 1186 | cur_dapm = w->dapm; |
81628103 MB |
1187 | list_move(&w->power_list, &pending); |
1188 | break; | |
163cac06 | 1189 | } |
b22ead2a MB |
1190 | |
1191 | if (ret < 0) | |
f7d41ae8 JN |
1192 | dev_err(w->dapm->dev, |
1193 | "Failed to apply widget power: %d\n", ret); | |
6ea31b9f | 1194 | } |
b22ead2a MB |
1195 | |
1196 | if (!list_empty(&pending)) | |
28e86808 | 1197 | dapm_seq_run_coalesced(cur_dapm, &pending); |
474b62d6 MB |
1198 | |
1199 | if (cur_dapm && cur_dapm->seq_notifier) { | |
1200 | for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++) | |
1201 | if (sort[i] == cur_sort) | |
1202 | cur_dapm->seq_notifier(cur_dapm, | |
f85a9e0d | 1203 | i, cur_subseq); |
474b62d6 | 1204 | } |
42aa3418 MB |
1205 | } |
1206 | ||
97404f2e MB |
1207 | static void dapm_widget_update(struct snd_soc_dapm_context *dapm) |
1208 | { | |
1209 | struct snd_soc_dapm_update *update = dapm->update; | |
1210 | struct snd_soc_dapm_widget *w; | |
1211 | int ret; | |
1212 | ||
1213 | if (!update) | |
1214 | return; | |
1215 | ||
1216 | w = update->widget; | |
1217 | ||
1218 | if (w->event && | |
1219 | (w->event_flags & SND_SOC_DAPM_PRE_REG)) { | |
1220 | ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG); | |
1221 | if (ret != 0) | |
1222 | pr_err("%s DAPM pre-event failed: %d\n", | |
1223 | w->name, ret); | |
1224 | } | |
1225 | ||
1226 | ret = snd_soc_update_bits(w->codec, update->reg, update->mask, | |
1227 | update->val); | |
1228 | if (ret < 0) | |
1229 | pr_err("%s DAPM update failed: %d\n", w->name, ret); | |
1230 | ||
1231 | if (w->event && | |
1232 | (w->event_flags & SND_SOC_DAPM_POST_REG)) { | |
1233 | ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG); | |
1234 | if (ret != 0) | |
1235 | pr_err("%s DAPM post-event failed: %d\n", | |
1236 | w->name, ret); | |
1237 | } | |
1238 | } | |
1239 | ||
9d0624a7 MB |
1240 | /* Async callback run prior to DAPM sequences - brings to _PREPARE if |
1241 | * they're changing state. | |
1242 | */ | |
1243 | static void dapm_pre_sequence_async(void *data, async_cookie_t cookie) | |
1244 | { | |
1245 | struct snd_soc_dapm_context *d = data; | |
1246 | int ret; | |
1247 | ||
56fba41f MB |
1248 | /* If we're off and we're not supposed to be go into STANDBY */ |
1249 | if (d->bias_level == SND_SOC_BIAS_OFF && | |
1250 | d->target_bias_level != SND_SOC_BIAS_OFF) { | |
f1aac484 MB |
1251 | if (d->dev) |
1252 | pm_runtime_get_sync(d->dev); | |
1253 | ||
9d0624a7 MB |
1254 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY); |
1255 | if (ret != 0) | |
1256 | dev_err(d->dev, | |
1257 | "Failed to turn on bias: %d\n", ret); | |
1258 | } | |
1259 | ||
56fba41f MB |
1260 | /* Prepare for a STADDBY->ON or ON->STANDBY transition */ |
1261 | if (d->bias_level != d->target_bias_level) { | |
9d0624a7 MB |
1262 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE); |
1263 | if (ret != 0) | |
1264 | dev_err(d->dev, | |
1265 | "Failed to prepare bias: %d\n", ret); | |
1266 | } | |
1267 | } | |
1268 | ||
1269 | /* Async callback run prior to DAPM sequences - brings to their final | |
1270 | * state. | |
1271 | */ | |
1272 | static void dapm_post_sequence_async(void *data, async_cookie_t cookie) | |
1273 | { | |
1274 | struct snd_soc_dapm_context *d = data; | |
1275 | int ret; | |
1276 | ||
1277 | /* If we just powered the last thing off drop to standby bias */ | |
56fba41f MB |
1278 | if (d->bias_level == SND_SOC_BIAS_PREPARE && |
1279 | (d->target_bias_level == SND_SOC_BIAS_STANDBY || | |
1280 | d->target_bias_level == SND_SOC_BIAS_OFF)) { | |
9d0624a7 MB |
1281 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY); |
1282 | if (ret != 0) | |
1283 | dev_err(d->dev, "Failed to apply standby bias: %d\n", | |
1284 | ret); | |
1285 | } | |
97404f2e | 1286 | |
9d0624a7 | 1287 | /* If we're in standby and can support bias off then do that */ |
56fba41f MB |
1288 | if (d->bias_level == SND_SOC_BIAS_STANDBY && |
1289 | d->target_bias_level == SND_SOC_BIAS_OFF) { | |
9d0624a7 MB |
1290 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF); |
1291 | if (ret != 0) | |
1292 | dev_err(d->dev, "Failed to turn off bias: %d\n", ret); | |
f1aac484 MB |
1293 | |
1294 | if (d->dev) | |
fb644e9c | 1295 | pm_runtime_put(d->dev); |
9d0624a7 MB |
1296 | } |
1297 | ||
1298 | /* If we just powered up then move to active bias */ | |
56fba41f MB |
1299 | if (d->bias_level == SND_SOC_BIAS_PREPARE && |
1300 | d->target_bias_level == SND_SOC_BIAS_ON) { | |
9d0624a7 MB |
1301 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON); |
1302 | if (ret != 0) | |
1303 | dev_err(d->dev, "Failed to apply active bias: %d\n", | |
1304 | ret); | |
1305 | } | |
1306 | } | |
97404f2e | 1307 | |
fe4fda5d MB |
1308 | static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget *peer, |
1309 | bool power, bool connect) | |
1310 | { | |
1311 | /* If a connection is being made or broken then that update | |
1312 | * will have marked the peer dirty, otherwise the widgets are | |
1313 | * not connected and this update has no impact. */ | |
1314 | if (!connect) | |
1315 | return; | |
1316 | ||
1317 | /* If the peer is already in the state we're moving to then we | |
1318 | * won't have an impact on it. */ | |
1319 | if (power != peer->power) | |
75c1f891 | 1320 | dapm_mark_dirty(peer, "peer state change"); |
fe4fda5d MB |
1321 | } |
1322 | ||
05623c43 MB |
1323 | static void dapm_widget_set_power(struct snd_soc_dapm_widget *w, bool power, |
1324 | struct list_head *up_list, | |
1325 | struct list_head *down_list) | |
1326 | { | |
db432b41 MB |
1327 | struct snd_soc_dapm_path *path; |
1328 | ||
05623c43 MB |
1329 | if (w->power == power) |
1330 | return; | |
1331 | ||
1332 | trace_snd_soc_dapm_widget_power(w, power); | |
1333 | ||
db432b41 | 1334 | /* If we changed our power state perhaps our neigbours changed |
fe4fda5d | 1335 | * also. |
db432b41 MB |
1336 | */ |
1337 | list_for_each_entry(path, &w->sources, list_sink) { | |
1338 | if (path->source) { | |
fe4fda5d MB |
1339 | dapm_widget_set_peer_power(path->source, power, |
1340 | path->connect); | |
db432b41 MB |
1341 | } |
1342 | } | |
f3bf3e45 MB |
1343 | switch (w->id) { |
1344 | case snd_soc_dapm_supply: | |
62ea874a | 1345 | case snd_soc_dapm_regulator_supply: |
f3bf3e45 MB |
1346 | /* Supplies can't affect their outputs, only their inputs */ |
1347 | break; | |
1348 | default: | |
1349 | list_for_each_entry(path, &w->sinks, list_source) { | |
1350 | if (path->sink) { | |
1351 | dapm_widget_set_peer_power(path->sink, power, | |
1352 | path->connect); | |
1353 | } | |
db432b41 | 1354 | } |
f3bf3e45 | 1355 | break; |
db432b41 MB |
1356 | } |
1357 | ||
05623c43 MB |
1358 | if (power) |
1359 | dapm_seq_insert(w, up_list, true); | |
1360 | else | |
1361 | dapm_seq_insert(w, down_list, false); | |
1362 | ||
1363 | w->power = power; | |
1364 | } | |
1365 | ||
7c81beb0 MB |
1366 | static void dapm_power_one_widget(struct snd_soc_dapm_widget *w, |
1367 | struct list_head *up_list, | |
1368 | struct list_head *down_list) | |
1369 | { | |
7c81beb0 MB |
1370 | int power; |
1371 | ||
1372 | switch (w->id) { | |
1373 | case snd_soc_dapm_pre: | |
1374 | dapm_seq_insert(w, down_list, false); | |
1375 | break; | |
1376 | case snd_soc_dapm_post: | |
1377 | dapm_seq_insert(w, up_list, true); | |
1378 | break; | |
1379 | ||
1380 | default: | |
d805002b | 1381 | power = dapm_widget_power_check(w); |
7c81beb0 | 1382 | |
05623c43 | 1383 | dapm_widget_set_power(w, power, up_list, down_list); |
7c81beb0 MB |
1384 | break; |
1385 | } | |
1386 | } | |
1387 | ||
2b97eabc RP |
1388 | /* |
1389 | * Scan each dapm widget for complete audio path. | |
1390 | * A complete path is a route that has valid endpoints i.e.:- | |
1391 | * | |
1392 | * o DAC to output pin. | |
1393 | * o Input Pin to ADC. | |
1394 | * o Input pin to Output pin (bypass, sidetone) | |
1395 | * o DAC to ADC (loopback). | |
1396 | */ | |
ce6120cc | 1397 | static int dapm_power_widgets(struct snd_soc_dapm_context *dapm, int event) |
2b97eabc | 1398 | { |
12ea2c78 | 1399 | struct snd_soc_card *card = dapm->card; |
2b97eabc | 1400 | struct snd_soc_dapm_widget *w; |
7be31be8 | 1401 | struct snd_soc_dapm_context *d; |
291f3bbc MB |
1402 | LIST_HEAD(up_list); |
1403 | LIST_HEAD(down_list); | |
9d0624a7 | 1404 | LIST_HEAD(async_domain); |
56fba41f | 1405 | enum snd_soc_bias_level bias; |
6d3ddc81 | 1406 | |
84e90930 MB |
1407 | trace_snd_soc_dapm_start(card); |
1408 | ||
56fba41f MB |
1409 | list_for_each_entry(d, &card->dapm_list, list) { |
1410 | if (d->n_widgets || d->codec == NULL) { | |
1411 | if (d->idle_bias_off) | |
1412 | d->target_bias_level = SND_SOC_BIAS_OFF; | |
1413 | else | |
1414 | d->target_bias_level = SND_SOC_BIAS_STANDBY; | |
1415 | } | |
1416 | } | |
7be31be8 | 1417 | |
6c120e19 | 1418 | dapm_reset(card); |
9b8a83b2 | 1419 | |
6d3ddc81 | 1420 | /* Check which widgets we need to power and store them in |
db432b41 MB |
1421 | * lists indicating if they should be powered up or down. We |
1422 | * only check widgets that have been flagged as dirty but note | |
1423 | * that new widgets may be added to the dirty list while we | |
1424 | * iterate. | |
6d3ddc81 | 1425 | */ |
db432b41 | 1426 | list_for_each_entry(w, &card->dapm_dirty, dirty) { |
7c81beb0 | 1427 | dapm_power_one_widget(w, &up_list, &down_list); |
2b97eabc RP |
1428 | } |
1429 | ||
f9de6d74 | 1430 | list_for_each_entry(w, &card->widgets, list) { |
db432b41 MB |
1431 | list_del_init(&w->dirty); |
1432 | ||
f9de6d74 MB |
1433 | if (w->power) { |
1434 | d = w->dapm; | |
1435 | ||
1436 | /* Supplies and micbiases only bring the | |
1437 | * context up to STANDBY as unless something | |
1438 | * else is active and passing audio they | |
afe62367 MB |
1439 | * generally don't require full power. Signal |
1440 | * generators are virtual pins and have no | |
1441 | * power impact themselves. | |
f9de6d74 MB |
1442 | */ |
1443 | switch (w->id) { | |
afe62367 MB |
1444 | case snd_soc_dapm_siggen: |
1445 | break; | |
f9de6d74 | 1446 | case snd_soc_dapm_supply: |
62ea874a | 1447 | case snd_soc_dapm_regulator_supply: |
f9de6d74 MB |
1448 | case snd_soc_dapm_micbias: |
1449 | if (d->target_bias_level < SND_SOC_BIAS_STANDBY) | |
1450 | d->target_bias_level = SND_SOC_BIAS_STANDBY; | |
1451 | break; | |
1452 | default: | |
1453 | d->target_bias_level = SND_SOC_BIAS_ON; | |
1454 | break; | |
1455 | } | |
1456 | } | |
1457 | ||
1458 | } | |
1459 | ||
b14b76a5 MB |
1460 | /* If there are no DAPM widgets then try to figure out power from the |
1461 | * event type. | |
1462 | */ | |
97c866de | 1463 | if (!dapm->n_widgets) { |
b14b76a5 MB |
1464 | switch (event) { |
1465 | case SND_SOC_DAPM_STREAM_START: | |
1466 | case SND_SOC_DAPM_STREAM_RESUME: | |
56fba41f | 1467 | dapm->target_bias_level = SND_SOC_BIAS_ON; |
b14b76a5 | 1468 | break; |
862af8ad | 1469 | case SND_SOC_DAPM_STREAM_STOP: |
e7c80e2a | 1470 | if (dapm->codec && dapm->codec->active) |
56fba41f MB |
1471 | dapm->target_bias_level = SND_SOC_BIAS_ON; |
1472 | else | |
1473 | dapm->target_bias_level = SND_SOC_BIAS_STANDBY; | |
862af8ad | 1474 | break; |
50b6bce5 | 1475 | case SND_SOC_DAPM_STREAM_SUSPEND: |
56fba41f | 1476 | dapm->target_bias_level = SND_SOC_BIAS_STANDBY; |
50b6bce5 | 1477 | break; |
b14b76a5 | 1478 | case SND_SOC_DAPM_STREAM_NOP: |
56fba41f | 1479 | dapm->target_bias_level = dapm->bias_level; |
50b6bce5 | 1480 | break; |
b14b76a5 MB |
1481 | default: |
1482 | break; | |
1483 | } | |
1484 | } | |
1485 | ||
85a843c5 MB |
1486 | /* Force all contexts in the card to the same bias state if |
1487 | * they're not ground referenced. | |
1488 | */ | |
56fba41f | 1489 | bias = SND_SOC_BIAS_OFF; |
52ba67bf | 1490 | list_for_each_entry(d, &card->dapm_list, list) |
56fba41f MB |
1491 | if (d->target_bias_level > bias) |
1492 | bias = d->target_bias_level; | |
52ba67bf | 1493 | list_for_each_entry(d, &card->dapm_list, list) |
85a843c5 MB |
1494 | if (!d->idle_bias_off) |
1495 | d->target_bias_level = bias; | |
52ba67bf | 1496 | |
de02d078 | 1497 | trace_snd_soc_dapm_walk_done(card); |
52ba67bf | 1498 | |
9d0624a7 MB |
1499 | /* Run all the bias changes in parallel */ |
1500 | list_for_each_entry(d, &dapm->card->dapm_list, list) | |
1501 | async_schedule_domain(dapm_pre_sequence_async, d, | |
1502 | &async_domain); | |
1503 | async_synchronize_full_domain(&async_domain); | |
452c5eaa | 1504 | |
6d3ddc81 | 1505 | /* Power down widgets first; try to avoid amplifying pops. */ |
828a842f | 1506 | dapm_seq_run(dapm, &down_list, event, false); |
2b97eabc | 1507 | |
97404f2e MB |
1508 | dapm_widget_update(dapm); |
1509 | ||
6d3ddc81 | 1510 | /* Now power up. */ |
828a842f | 1511 | dapm_seq_run(dapm, &up_list, event, true); |
2b97eabc | 1512 | |
9d0624a7 MB |
1513 | /* Run all the bias changes in parallel */ |
1514 | list_for_each_entry(d, &dapm->card->dapm_list, list) | |
1515 | async_schedule_domain(dapm_post_sequence_async, d, | |
1516 | &async_domain); | |
1517 | async_synchronize_full_domain(&async_domain); | |
452c5eaa | 1518 | |
fd8d3bc0 JN |
1519 | pop_dbg(dapm->dev, card->pop_time, |
1520 | "DAPM sequencing finished, waiting %dms\n", card->pop_time); | |
3a45b867 | 1521 | pop_wait(card->pop_time); |
cb507e7e | 1522 | |
84e90930 MB |
1523 | trace_snd_soc_dapm_done(card); |
1524 | ||
42aa3418 | 1525 | return 0; |
2b97eabc RP |
1526 | } |
1527 | ||
79fb9387 MB |
1528 | #ifdef CONFIG_DEBUG_FS |
1529 | static int dapm_widget_power_open_file(struct inode *inode, struct file *file) | |
1530 | { | |
1531 | file->private_data = inode->i_private; | |
1532 | return 0; | |
1533 | } | |
1534 | ||
1535 | static ssize_t dapm_widget_power_read_file(struct file *file, | |
1536 | char __user *user_buf, | |
1537 | size_t count, loff_t *ppos) | |
1538 | { | |
1539 | struct snd_soc_dapm_widget *w = file->private_data; | |
1540 | char *buf; | |
1541 | int in, out; | |
1542 | ssize_t ret; | |
1543 | struct snd_soc_dapm_path *p = NULL; | |
1544 | ||
1545 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); | |
1546 | if (!buf) | |
1547 | return -ENOMEM; | |
1548 | ||
1549 | in = is_connected_input_ep(w); | |
ce6120cc | 1550 | dapm_clear_walk(w->dapm); |
79fb9387 | 1551 | out = is_connected_output_ep(w); |
ce6120cc | 1552 | dapm_clear_walk(w->dapm); |
79fb9387 | 1553 | |
d033c36a | 1554 | ret = snprintf(buf, PAGE_SIZE, "%s: %s in %d out %d", |
79fb9387 MB |
1555 | w->name, w->power ? "On" : "Off", in, out); |
1556 | ||
d033c36a MB |
1557 | if (w->reg >= 0) |
1558 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
1559 | " - R%d(0x%x) bit %d", | |
1560 | w->reg, w->reg, w->shift); | |
1561 | ||
1562 | ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n"); | |
1563 | ||
3eef08ba MB |
1564 | if (w->sname) |
1565 | ret += snprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n", | |
1566 | w->sname, | |
1567 | w->active ? "active" : "inactive"); | |
79fb9387 MB |
1568 | |
1569 | list_for_each_entry(p, &w->sources, list_sink) { | |
215edda3 MB |
1570 | if (p->connected && !p->connected(w, p->sink)) |
1571 | continue; | |
1572 | ||
79fb9387 MB |
1573 | if (p->connect) |
1574 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
67f5ed6e | 1575 | " in \"%s\" \"%s\"\n", |
79fb9387 MB |
1576 | p->name ? p->name : "static", |
1577 | p->source->name); | |
1578 | } | |
1579 | list_for_each_entry(p, &w->sinks, list_source) { | |
215edda3 MB |
1580 | if (p->connected && !p->connected(w, p->sink)) |
1581 | continue; | |
1582 | ||
79fb9387 MB |
1583 | if (p->connect) |
1584 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
67f5ed6e | 1585 | " out \"%s\" \"%s\"\n", |
79fb9387 MB |
1586 | p->name ? p->name : "static", |
1587 | p->sink->name); | |
1588 | } | |
1589 | ||
1590 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); | |
1591 | ||
1592 | kfree(buf); | |
1593 | return ret; | |
1594 | } | |
1595 | ||
1596 | static const struct file_operations dapm_widget_power_fops = { | |
1597 | .open = dapm_widget_power_open_file, | |
1598 | .read = dapm_widget_power_read_file, | |
6038f373 | 1599 | .llseek = default_llseek, |
79fb9387 MB |
1600 | }; |
1601 | ||
ef49e4fa MB |
1602 | static int dapm_bias_open_file(struct inode *inode, struct file *file) |
1603 | { | |
1604 | file->private_data = inode->i_private; | |
1605 | return 0; | |
1606 | } | |
1607 | ||
1608 | static ssize_t dapm_bias_read_file(struct file *file, char __user *user_buf, | |
1609 | size_t count, loff_t *ppos) | |
1610 | { | |
1611 | struct snd_soc_dapm_context *dapm = file->private_data; | |
1612 | char *level; | |
1613 | ||
1614 | switch (dapm->bias_level) { | |
1615 | case SND_SOC_BIAS_ON: | |
1616 | level = "On\n"; | |
1617 | break; | |
1618 | case SND_SOC_BIAS_PREPARE: | |
1619 | level = "Prepare\n"; | |
1620 | break; | |
1621 | case SND_SOC_BIAS_STANDBY: | |
1622 | level = "Standby\n"; | |
1623 | break; | |
1624 | case SND_SOC_BIAS_OFF: | |
1625 | level = "Off\n"; | |
1626 | break; | |
1627 | default: | |
1628 | BUG(); | |
1629 | level = "Unknown\n"; | |
1630 | break; | |
1631 | } | |
1632 | ||
1633 | return simple_read_from_buffer(user_buf, count, ppos, level, | |
1634 | strlen(level)); | |
1635 | } | |
1636 | ||
1637 | static const struct file_operations dapm_bias_fops = { | |
1638 | .open = dapm_bias_open_file, | |
1639 | .read = dapm_bias_read_file, | |
1640 | .llseek = default_llseek, | |
1641 | }; | |
1642 | ||
8eecaf62 LPC |
1643 | void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm, |
1644 | struct dentry *parent) | |
79fb9387 | 1645 | { |
79fb9387 MB |
1646 | struct dentry *d; |
1647 | ||
8eecaf62 LPC |
1648 | dapm->debugfs_dapm = debugfs_create_dir("dapm", parent); |
1649 | ||
1650 | if (!dapm->debugfs_dapm) { | |
1651 | printk(KERN_WARNING | |
1652 | "Failed to create DAPM debugfs directory\n"); | |
79fb9387 | 1653 | return; |
8eecaf62 | 1654 | } |
79fb9387 | 1655 | |
ef49e4fa MB |
1656 | d = debugfs_create_file("bias_level", 0444, |
1657 | dapm->debugfs_dapm, dapm, | |
1658 | &dapm_bias_fops); | |
1659 | if (!d) | |
1660 | dev_warn(dapm->dev, | |
1661 | "ASoC: Failed to create bias level debugfs file\n"); | |
d5d1e0be | 1662 | } |
ef49e4fa | 1663 | |
d5d1e0be LPC |
1664 | static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w) |
1665 | { | |
1666 | struct snd_soc_dapm_context *dapm = w->dapm; | |
1667 | struct dentry *d; | |
79fb9387 | 1668 | |
d5d1e0be LPC |
1669 | if (!dapm->debugfs_dapm || !w->name) |
1670 | return; | |
1671 | ||
1672 | d = debugfs_create_file(w->name, 0444, | |
1673 | dapm->debugfs_dapm, w, | |
1674 | &dapm_widget_power_fops); | |
1675 | if (!d) | |
1676 | dev_warn(w->dapm->dev, | |
1677 | "ASoC: Failed to create %s debugfs file\n", | |
1678 | w->name); | |
79fb9387 | 1679 | } |
d5d1e0be | 1680 | |
6c45e126 LPC |
1681 | static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm) |
1682 | { | |
1683 | debugfs_remove_recursive(dapm->debugfs_dapm); | |
1684 | } | |
1685 | ||
79fb9387 | 1686 | #else |
8eecaf62 LPC |
1687 | void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm, |
1688 | struct dentry *parent) | |
79fb9387 MB |
1689 | { |
1690 | } | |
d5d1e0be LPC |
1691 | |
1692 | static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w) | |
1693 | { | |
1694 | } | |
1695 | ||
6c45e126 LPC |
1696 | static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm) |
1697 | { | |
1698 | } | |
1699 | ||
79fb9387 MB |
1700 | #endif |
1701 | ||
2b97eabc | 1702 | /* test and update the power status of a mux widget */ |
40f02cd9 LG |
1703 | int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_widget *widget, |
1704 | struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e) | |
2b97eabc RP |
1705 | { |
1706 | struct snd_soc_dapm_path *path; | |
1707 | int found = 0; | |
1708 | ||
eff317d0 | 1709 | if (widget->id != snd_soc_dapm_mux && |
24ff33ac | 1710 | widget->id != snd_soc_dapm_virt_mux && |
eff317d0 | 1711 | widget->id != snd_soc_dapm_value_mux) |
2b97eabc RP |
1712 | return -ENODEV; |
1713 | ||
2b97eabc | 1714 | /* find dapm widget path assoc with kcontrol */ |
8ddab3f5 | 1715 | list_for_each_entry(path, &widget->dapm->card->paths, list) { |
2b97eabc RP |
1716 | if (path->kcontrol != kcontrol) |
1717 | continue; | |
1718 | ||
cb01e2b9 | 1719 | if (!path->name || !e->texts[mux]) |
2b97eabc RP |
1720 | continue; |
1721 | ||
1722 | found = 1; | |
1723 | /* we now need to match the string in the enum to the path */ | |
db432b41 | 1724 | if (!(strcmp(path->name, e->texts[mux]))) { |
2b97eabc | 1725 | path->connect = 1; /* new connection */ |
75c1f891 | 1726 | dapm_mark_dirty(path->source, "mux connection"); |
db432b41 MB |
1727 | } else { |
1728 | if (path->connect) | |
75c1f891 MB |
1729 | dapm_mark_dirty(path->source, |
1730 | "mux disconnection"); | |
2b97eabc | 1731 | path->connect = 0; /* old connection must be powered down */ |
db432b41 | 1732 | } |
2b97eabc RP |
1733 | } |
1734 | ||
db432b41 | 1735 | if (found) { |
75c1f891 | 1736 | dapm_mark_dirty(widget, "mux change"); |
ce6120cc | 1737 | dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP); |
db432b41 | 1738 | } |
2b97eabc RP |
1739 | |
1740 | return 0; | |
1741 | } | |
40f02cd9 | 1742 | EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power); |
2b97eabc | 1743 | |
1b075e3f | 1744 | /* test and update the power status of a mixer or switch widget */ |
40f02cd9 | 1745 | int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_widget *widget, |
283375ce | 1746 | struct snd_kcontrol *kcontrol, int connect) |
2b97eabc RP |
1747 | { |
1748 | struct snd_soc_dapm_path *path; | |
1749 | int found = 0; | |
1750 | ||
1b075e3f | 1751 | if (widget->id != snd_soc_dapm_mixer && |
ca9c1aae | 1752 | widget->id != snd_soc_dapm_mixer_named_ctl && |
1b075e3f | 1753 | widget->id != snd_soc_dapm_switch) |
2b97eabc RP |
1754 | return -ENODEV; |
1755 | ||
2b97eabc | 1756 | /* find dapm widget path assoc with kcontrol */ |
8ddab3f5 | 1757 | list_for_each_entry(path, &widget->dapm->card->paths, list) { |
2b97eabc RP |
1758 | if (path->kcontrol != kcontrol) |
1759 | continue; | |
1760 | ||
1761 | /* found, now check type */ | |
1762 | found = 1; | |
283375ce | 1763 | path->connect = connect; |
75c1f891 | 1764 | dapm_mark_dirty(path->source, "mixer connection"); |
2b97eabc RP |
1765 | } |
1766 | ||
db432b41 | 1767 | if (found) { |
75c1f891 | 1768 | dapm_mark_dirty(widget, "mixer update"); |
ce6120cc | 1769 | dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP); |
db432b41 | 1770 | } |
2b97eabc RP |
1771 | |
1772 | return 0; | |
1773 | } | |
40f02cd9 | 1774 | EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power); |
2b97eabc RP |
1775 | |
1776 | /* show dapm widget status in sys fs */ | |
1777 | static ssize_t dapm_widget_show(struct device *dev, | |
1778 | struct device_attribute *attr, char *buf) | |
1779 | { | |
36ae1a96 | 1780 | struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev); |
f0fba2ad | 1781 | struct snd_soc_codec *codec =rtd->codec; |
2b97eabc RP |
1782 | struct snd_soc_dapm_widget *w; |
1783 | int count = 0; | |
1784 | char *state = "not set"; | |
1785 | ||
97c866de JN |
1786 | list_for_each_entry(w, &codec->card->widgets, list) { |
1787 | if (w->dapm != &codec->dapm) | |
1788 | continue; | |
2b97eabc RP |
1789 | |
1790 | /* only display widgets that burnm power */ | |
1791 | switch (w->id) { | |
1792 | case snd_soc_dapm_hp: | |
1793 | case snd_soc_dapm_mic: | |
1794 | case snd_soc_dapm_spk: | |
1795 | case snd_soc_dapm_line: | |
1796 | case snd_soc_dapm_micbias: | |
1797 | case snd_soc_dapm_dac: | |
1798 | case snd_soc_dapm_adc: | |
1799 | case snd_soc_dapm_pga: | |
d88429a6 | 1800 | case snd_soc_dapm_out_drv: |
2b97eabc | 1801 | case snd_soc_dapm_mixer: |
ca9c1aae | 1802 | case snd_soc_dapm_mixer_named_ctl: |
246d0a17 | 1803 | case snd_soc_dapm_supply: |
62ea874a | 1804 | case snd_soc_dapm_regulator_supply: |
2b97eabc RP |
1805 | if (w->name) |
1806 | count += sprintf(buf + count, "%s: %s\n", | |
1807 | w->name, w->power ? "On":"Off"); | |
1808 | break; | |
1809 | default: | |
1810 | break; | |
1811 | } | |
1812 | } | |
1813 | ||
ce6120cc | 1814 | switch (codec->dapm.bias_level) { |
0be9898a MB |
1815 | case SND_SOC_BIAS_ON: |
1816 | state = "On"; | |
2b97eabc | 1817 | break; |
0be9898a MB |
1818 | case SND_SOC_BIAS_PREPARE: |
1819 | state = "Prepare"; | |
2b97eabc | 1820 | break; |
0be9898a MB |
1821 | case SND_SOC_BIAS_STANDBY: |
1822 | state = "Standby"; | |
2b97eabc | 1823 | break; |
0be9898a MB |
1824 | case SND_SOC_BIAS_OFF: |
1825 | state = "Off"; | |
2b97eabc RP |
1826 | break; |
1827 | } | |
1828 | count += sprintf(buf + count, "PM State: %s\n", state); | |
1829 | ||
1830 | return count; | |
1831 | } | |
1832 | ||
1833 | static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL); | |
1834 | ||
1835 | int snd_soc_dapm_sys_add(struct device *dev) | |
1836 | { | |
12ef193d | 1837 | return device_create_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1838 | } |
1839 | ||
1840 | static void snd_soc_dapm_sys_remove(struct device *dev) | |
1841 | { | |
aef90843 | 1842 | device_remove_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1843 | } |
1844 | ||
1845 | /* free all dapm widgets and resources */ | |
ce6120cc | 1846 | static void dapm_free_widgets(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
1847 | { |
1848 | struct snd_soc_dapm_widget *w, *next_w; | |
1849 | struct snd_soc_dapm_path *p, *next_p; | |
1850 | ||
97c866de JN |
1851 | list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) { |
1852 | if (w->dapm != dapm) | |
1853 | continue; | |
2b97eabc | 1854 | list_del(&w->list); |
8ddab3f5 JN |
1855 | /* |
1856 | * remove source and sink paths associated to this widget. | |
1857 | * While removing the path, remove reference to it from both | |
1858 | * source and sink widgets so that path is removed only once. | |
1859 | */ | |
1860 | list_for_each_entry_safe(p, next_p, &w->sources, list_sink) { | |
1861 | list_del(&p->list_sink); | |
1862 | list_del(&p->list_source); | |
1863 | list_del(&p->list); | |
1864 | kfree(p->long_name); | |
1865 | kfree(p); | |
1866 | } | |
1867 | list_for_each_entry_safe(p, next_p, &w->sinks, list_source) { | |
1868 | list_del(&p->list_sink); | |
1869 | list_del(&p->list_source); | |
1870 | list_del(&p->list); | |
1871 | kfree(p->long_name); | |
1872 | kfree(p); | |
1873 | } | |
fad59888 | 1874 | kfree(w->kcontrols); |
ead9b919 | 1875 | kfree(w->name); |
2b97eabc RP |
1876 | kfree(w); |
1877 | } | |
2b97eabc RP |
1878 | } |
1879 | ||
91a5fca4 LPC |
1880 | static struct snd_soc_dapm_widget *dapm_find_widget( |
1881 | struct snd_soc_dapm_context *dapm, const char *pin, | |
1882 | bool search_other_contexts) | |
a5302181 LG |
1883 | { |
1884 | struct snd_soc_dapm_widget *w; | |
91a5fca4 | 1885 | struct snd_soc_dapm_widget *fallback = NULL; |
a5302181 | 1886 | |
97c866de | 1887 | list_for_each_entry(w, &dapm->card->widgets, list) { |
a5302181 | 1888 | if (!strcmp(w->name, pin)) { |
91a5fca4 LPC |
1889 | if (w->dapm == dapm) |
1890 | return w; | |
1891 | else | |
1892 | fallback = w; | |
a5302181 LG |
1893 | } |
1894 | } | |
1895 | ||
91a5fca4 LPC |
1896 | if (search_other_contexts) |
1897 | return fallback; | |
1898 | ||
1899 | return NULL; | |
1900 | } | |
1901 | ||
1902 | static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm, | |
1903 | const char *pin, int status) | |
1904 | { | |
1905 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); | |
1906 | ||
1907 | if (!w) { | |
1908 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); | |
1909 | return -EINVAL; | |
0d86733c MB |
1910 | } |
1911 | ||
91a5fca4 LPC |
1912 | w->connected = status; |
1913 | if (status == 0) | |
1914 | w->force = 0; | |
75c1f891 | 1915 | dapm_mark_dirty(w, "pin configuration"); |
91a5fca4 LPC |
1916 | |
1917 | return 0; | |
a5302181 LG |
1918 | } |
1919 | ||
2b97eabc | 1920 | /** |
a5302181 | 1921 | * snd_soc_dapm_sync - scan and power dapm paths |
ce6120cc | 1922 | * @dapm: DAPM context |
2b97eabc RP |
1923 | * |
1924 | * Walks all dapm audio paths and powers widgets according to their | |
1925 | * stream or path usage. | |
1926 | * | |
1927 | * Returns 0 for success. | |
1928 | */ | |
ce6120cc | 1929 | int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm) |
2b97eabc | 1930 | { |
4f4c0072 MB |
1931 | /* |
1932 | * Suppress early reports (eg, jacks syncing their state) to avoid | |
1933 | * silly DAPM runs during card startup. | |
1934 | */ | |
1935 | if (!dapm->card || !dapm->card->instantiated) | |
1936 | return 0; | |
1937 | ||
ce6120cc | 1938 | return dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc | 1939 | } |
a5302181 | 1940 | EXPORT_SYMBOL_GPL(snd_soc_dapm_sync); |
2b97eabc | 1941 | |
ce6120cc | 1942 | static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm, |
215edda3 | 1943 | const struct snd_soc_dapm_route *route) |
2b97eabc RP |
1944 | { |
1945 | struct snd_soc_dapm_path *path; | |
1946 | struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w; | |
97c866de | 1947 | struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL; |
ead9b919 | 1948 | const char *sink; |
215edda3 | 1949 | const char *control = route->control; |
ead9b919 JN |
1950 | const char *source; |
1951 | char prefixed_sink[80]; | |
1952 | char prefixed_source[80]; | |
2b97eabc RP |
1953 | int ret = 0; |
1954 | ||
88e8b9a8 | 1955 | if (dapm->codec && dapm->codec->name_prefix) { |
ead9b919 JN |
1956 | snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s", |
1957 | dapm->codec->name_prefix, route->sink); | |
1958 | sink = prefixed_sink; | |
1959 | snprintf(prefixed_source, sizeof(prefixed_source), "%s %s", | |
1960 | dapm->codec->name_prefix, route->source); | |
1961 | source = prefixed_source; | |
1962 | } else { | |
1963 | sink = route->sink; | |
1964 | source = route->source; | |
1965 | } | |
1966 | ||
97c866de JN |
1967 | /* |
1968 | * find src and dest widgets over all widgets but favor a widget from | |
1969 | * current DAPM context | |
1970 | */ | |
1971 | list_for_each_entry(w, &dapm->card->widgets, list) { | |
2b97eabc | 1972 | if (!wsink && !(strcmp(w->name, sink))) { |
97c866de JN |
1973 | wtsink = w; |
1974 | if (w->dapm == dapm) | |
1975 | wsink = w; | |
2b97eabc RP |
1976 | continue; |
1977 | } | |
1978 | if (!wsource && !(strcmp(w->name, source))) { | |
97c866de JN |
1979 | wtsource = w; |
1980 | if (w->dapm == dapm) | |
1981 | wsource = w; | |
2b97eabc RP |
1982 | } |
1983 | } | |
97c866de JN |
1984 | /* use widget from another DAPM context if not found from this */ |
1985 | if (!wsink) | |
1986 | wsink = wtsink; | |
1987 | if (!wsource) | |
1988 | wsource = wtsource; | |
2b97eabc RP |
1989 | |
1990 | if (wsource == NULL || wsink == NULL) | |
1991 | return -ENODEV; | |
1992 | ||
1993 | path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL); | |
1994 | if (!path) | |
1995 | return -ENOMEM; | |
1996 | ||
1997 | path->source = wsource; | |
1998 | path->sink = wsink; | |
215edda3 | 1999 | path->connected = route->connected; |
2b97eabc RP |
2000 | INIT_LIST_HEAD(&path->list); |
2001 | INIT_LIST_HEAD(&path->list_source); | |
2002 | INIT_LIST_HEAD(&path->list_sink); | |
2003 | ||
2004 | /* check for external widgets */ | |
2005 | if (wsink->id == snd_soc_dapm_input) { | |
2006 | if (wsource->id == snd_soc_dapm_micbias || | |
2007 | wsource->id == snd_soc_dapm_mic || | |
087d53ab RC |
2008 | wsource->id == snd_soc_dapm_line || |
2009 | wsource->id == snd_soc_dapm_output) | |
2b97eabc RP |
2010 | wsink->ext = 1; |
2011 | } | |
2012 | if (wsource->id == snd_soc_dapm_output) { | |
2013 | if (wsink->id == snd_soc_dapm_spk || | |
2014 | wsink->id == snd_soc_dapm_hp || | |
1e39221e SF |
2015 | wsink->id == snd_soc_dapm_line || |
2016 | wsink->id == snd_soc_dapm_input) | |
2b97eabc RP |
2017 | wsource->ext = 1; |
2018 | } | |
2019 | ||
2020 | /* connect static paths */ | |
2021 | if (control == NULL) { | |
8ddab3f5 | 2022 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
2023 | list_add(&path->list_sink, &wsink->sources); |
2024 | list_add(&path->list_source, &wsource->sinks); | |
2025 | path->connect = 1; | |
2026 | return 0; | |
2027 | } | |
2028 | ||
2029 | /* connect dynamic paths */ | |
dc2bea61 | 2030 | switch (wsink->id) { |
2b97eabc RP |
2031 | case snd_soc_dapm_adc: |
2032 | case snd_soc_dapm_dac: | |
2033 | case snd_soc_dapm_pga: | |
d88429a6 | 2034 | case snd_soc_dapm_out_drv: |
2b97eabc RP |
2035 | case snd_soc_dapm_input: |
2036 | case snd_soc_dapm_output: | |
1ab97c8c | 2037 | case snd_soc_dapm_siggen: |
2b97eabc RP |
2038 | case snd_soc_dapm_micbias: |
2039 | case snd_soc_dapm_vmid: | |
2040 | case snd_soc_dapm_pre: | |
2041 | case snd_soc_dapm_post: | |
246d0a17 | 2042 | case snd_soc_dapm_supply: |
62ea874a | 2043 | case snd_soc_dapm_regulator_supply: |
010ff262 MB |
2044 | case snd_soc_dapm_aif_in: |
2045 | case snd_soc_dapm_aif_out: | |
8ddab3f5 | 2046 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
2047 | list_add(&path->list_sink, &wsink->sources); |
2048 | list_add(&path->list_source, &wsource->sinks); | |
2049 | path->connect = 1; | |
2050 | return 0; | |
2051 | case snd_soc_dapm_mux: | |
24ff33ac | 2052 | case snd_soc_dapm_virt_mux: |
74155556 | 2053 | case snd_soc_dapm_value_mux: |
ce6120cc | 2054 | ret = dapm_connect_mux(dapm, wsource, wsink, path, control, |
82cfecdc | 2055 | &wsink->kcontrol_news[0]); |
2b97eabc RP |
2056 | if (ret != 0) |
2057 | goto err; | |
2058 | break; | |
2059 | case snd_soc_dapm_switch: | |
2060 | case snd_soc_dapm_mixer: | |
ca9c1aae | 2061 | case snd_soc_dapm_mixer_named_ctl: |
ce6120cc | 2062 | ret = dapm_connect_mixer(dapm, wsource, wsink, path, control); |
2b97eabc RP |
2063 | if (ret != 0) |
2064 | goto err; | |
2065 | break; | |
2066 | case snd_soc_dapm_hp: | |
2067 | case snd_soc_dapm_mic: | |
2068 | case snd_soc_dapm_line: | |
2069 | case snd_soc_dapm_spk: | |
8ddab3f5 | 2070 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
2071 | list_add(&path->list_sink, &wsink->sources); |
2072 | list_add(&path->list_source, &wsource->sinks); | |
2073 | path->connect = 0; | |
2074 | return 0; | |
2075 | } | |
2076 | return 0; | |
2077 | ||
2078 | err: | |
f7d41ae8 JN |
2079 | dev_warn(dapm->dev, "asoc: no dapm match for %s --> %s --> %s\n", |
2080 | source, control, sink); | |
2b97eabc RP |
2081 | kfree(path); |
2082 | return ret; | |
2083 | } | |
105f1c28 | 2084 | |
105f1c28 MB |
2085 | /** |
2086 | * snd_soc_dapm_add_routes - Add routes between DAPM widgets | |
ce6120cc | 2087 | * @dapm: DAPM context |
105f1c28 MB |
2088 | * @route: audio routes |
2089 | * @num: number of routes | |
2090 | * | |
2091 | * Connects 2 dapm widgets together via a named audio path. The sink is | |
2092 | * the widget receiving the audio signal, whilst the source is the sender | |
2093 | * of the audio signal. | |
2094 | * | |
2095 | * Returns 0 for success else error. On error all resources can be freed | |
2096 | * with a call to snd_soc_card_free(). | |
2097 | */ | |
ce6120cc | 2098 | int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm, |
105f1c28 MB |
2099 | const struct snd_soc_dapm_route *route, int num) |
2100 | { | |
2101 | int i, ret; | |
2102 | ||
2103 | for (i = 0; i < num; i++) { | |
ce6120cc | 2104 | ret = snd_soc_dapm_add_route(dapm, route); |
105f1c28 | 2105 | if (ret < 0) { |
f7d41ae8 JN |
2106 | dev_err(dapm->dev, "Failed to add route %s->%s\n", |
2107 | route->source, route->sink); | |
105f1c28 MB |
2108 | return ret; |
2109 | } | |
2110 | route++; | |
2111 | } | |
2112 | ||
2113 | return 0; | |
2114 | } | |
2115 | EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes); | |
2116 | ||
bf3a9e13 MB |
2117 | static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context *dapm, |
2118 | const struct snd_soc_dapm_route *route) | |
2119 | { | |
2120 | struct snd_soc_dapm_widget *source = dapm_find_widget(dapm, | |
2121 | route->source, | |
2122 | true); | |
2123 | struct snd_soc_dapm_widget *sink = dapm_find_widget(dapm, | |
2124 | route->sink, | |
2125 | true); | |
2126 | struct snd_soc_dapm_path *path; | |
2127 | int count = 0; | |
2128 | ||
2129 | if (!source) { | |
2130 | dev_err(dapm->dev, "Unable to find source %s for weak route\n", | |
2131 | route->source); | |
2132 | return -ENODEV; | |
2133 | } | |
2134 | ||
2135 | if (!sink) { | |
2136 | dev_err(dapm->dev, "Unable to find sink %s for weak route\n", | |
2137 | route->sink); | |
2138 | return -ENODEV; | |
2139 | } | |
2140 | ||
2141 | if (route->control || route->connected) | |
2142 | dev_warn(dapm->dev, "Ignoring control for weak route %s->%s\n", | |
2143 | route->source, route->sink); | |
2144 | ||
2145 | list_for_each_entry(path, &source->sinks, list_source) { | |
2146 | if (path->sink == sink) { | |
2147 | path->weak = 1; | |
2148 | count++; | |
2149 | } | |
2150 | } | |
2151 | ||
2152 | if (count == 0) | |
2153 | dev_err(dapm->dev, "No path found for weak route %s->%s\n", | |
2154 | route->source, route->sink); | |
2155 | if (count > 1) | |
2156 | dev_warn(dapm->dev, "%d paths found for weak route %s->%s\n", | |
2157 | count, route->source, route->sink); | |
2158 | ||
2159 | return 0; | |
2160 | } | |
2161 | ||
2162 | /** | |
2163 | * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak | |
2164 | * @dapm: DAPM context | |
2165 | * @route: audio routes | |
2166 | * @num: number of routes | |
2167 | * | |
2168 | * Mark existing routes matching those specified in the passed array | |
2169 | * as being weak, meaning that they are ignored for the purpose of | |
2170 | * power decisions. The main intended use case is for sidetone paths | |
2171 | * which couple audio between other independent paths if they are both | |
2172 | * active in order to make the combination work better at the user | |
2173 | * level but which aren't intended to be "used". | |
2174 | * | |
2175 | * Note that CODEC drivers should not use this as sidetone type paths | |
2176 | * can frequently also be used as bypass paths. | |
2177 | */ | |
2178 | int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context *dapm, | |
2179 | const struct snd_soc_dapm_route *route, int num) | |
2180 | { | |
2181 | int i, err; | |
2182 | int ret = 0; | |
2183 | ||
2184 | for (i = 0; i < num; i++) { | |
2185 | err = snd_soc_dapm_weak_route(dapm, route); | |
2186 | if (err) | |
2187 | ret = err; | |
2188 | route++; | |
2189 | } | |
2190 | ||
2191 | return ret; | |
2192 | } | |
2193 | EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes); | |
2194 | ||
2b97eabc RP |
2195 | /** |
2196 | * snd_soc_dapm_new_widgets - add new dapm widgets | |
ce6120cc | 2197 | * @dapm: DAPM context |
2b97eabc RP |
2198 | * |
2199 | * Checks the codec for any new dapm widgets and creates them if found. | |
2200 | * | |
2201 | * Returns 0 for success. | |
2202 | */ | |
ce6120cc | 2203 | int snd_soc_dapm_new_widgets(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
2204 | { |
2205 | struct snd_soc_dapm_widget *w; | |
b66a70d5 | 2206 | unsigned int val; |
2b97eabc | 2207 | |
97c866de | 2208 | list_for_each_entry(w, &dapm->card->widgets, list) |
2b97eabc RP |
2209 | { |
2210 | if (w->new) | |
2211 | continue; | |
2212 | ||
fad59888 SW |
2213 | if (w->num_kcontrols) { |
2214 | w->kcontrols = kzalloc(w->num_kcontrols * | |
2215 | sizeof(struct snd_kcontrol *), | |
2216 | GFP_KERNEL); | |
2217 | if (!w->kcontrols) | |
2218 | return -ENOMEM; | |
2219 | } | |
2220 | ||
2b97eabc RP |
2221 | switch(w->id) { |
2222 | case snd_soc_dapm_switch: | |
2223 | case snd_soc_dapm_mixer: | |
ca9c1aae | 2224 | case snd_soc_dapm_mixer_named_ctl: |
4b80b8c2 | 2225 | dapm_new_mixer(w); |
2b97eabc RP |
2226 | break; |
2227 | case snd_soc_dapm_mux: | |
24ff33ac | 2228 | case snd_soc_dapm_virt_mux: |
2e72f8e3 | 2229 | case snd_soc_dapm_value_mux: |
4b80b8c2 | 2230 | dapm_new_mux(w); |
2b97eabc | 2231 | break; |
2b97eabc | 2232 | case snd_soc_dapm_pga: |
d88429a6 | 2233 | case snd_soc_dapm_out_drv: |
4b80b8c2 | 2234 | dapm_new_pga(w); |
2b97eabc | 2235 | break; |
7ca3a18b | 2236 | default: |
2b97eabc RP |
2237 | break; |
2238 | } | |
b66a70d5 MB |
2239 | |
2240 | /* Read the initial power state from the device */ | |
2241 | if (w->reg >= 0) { | |
0445bdf4 | 2242 | val = soc_widget_read(w, w->reg); |
b66a70d5 MB |
2243 | val &= 1 << w->shift; |
2244 | if (w->invert) | |
2245 | val = !val; | |
2246 | ||
2247 | if (val) | |
2248 | w->power = 1; | |
2249 | } | |
2250 | ||
2b97eabc | 2251 | w->new = 1; |
d5d1e0be | 2252 | |
7508b12a | 2253 | dapm_mark_dirty(w, "new widget"); |
d5d1e0be | 2254 | dapm_debugfs_add_widget(w); |
2b97eabc RP |
2255 | } |
2256 | ||
ce6120cc | 2257 | dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc RP |
2258 | return 0; |
2259 | } | |
2260 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets); | |
2261 | ||
2262 | /** | |
2263 | * snd_soc_dapm_get_volsw - dapm mixer get callback | |
2264 | * @kcontrol: mixer control | |
ac11a2b3 | 2265 | * @ucontrol: control element information |
2b97eabc RP |
2266 | * |
2267 | * Callback to get the value of a dapm mixer control. | |
2268 | * | |
2269 | * Returns 0 for success. | |
2270 | */ | |
2271 | int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol, | |
2272 | struct snd_ctl_elem_value *ucontrol) | |
2273 | { | |
fafd2176 SW |
2274 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2275 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
4eaa9819 JS |
2276 | struct soc_mixer_control *mc = |
2277 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
2278 | unsigned int reg = mc->reg; |
2279 | unsigned int shift = mc->shift; | |
2280 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 2281 | int max = mc->max; |
815ecf8d JS |
2282 | unsigned int invert = mc->invert; |
2283 | unsigned int mask = (1 << fls(max)) - 1; | |
2b97eabc | 2284 | |
2b97eabc RP |
2285 | ucontrol->value.integer.value[0] = |
2286 | (snd_soc_read(widget->codec, reg) >> shift) & mask; | |
2287 | if (shift != rshift) | |
2288 | ucontrol->value.integer.value[1] = | |
2289 | (snd_soc_read(widget->codec, reg) >> rshift) & mask; | |
2290 | if (invert) { | |
2291 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 2292 | max - ucontrol->value.integer.value[0]; |
2b97eabc RP |
2293 | if (shift != rshift) |
2294 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 2295 | max - ucontrol->value.integer.value[1]; |
2b97eabc RP |
2296 | } |
2297 | ||
2298 | return 0; | |
2299 | } | |
2300 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw); | |
2301 | ||
2302 | /** | |
2303 | * snd_soc_dapm_put_volsw - dapm mixer set callback | |
2304 | * @kcontrol: mixer control | |
ac11a2b3 | 2305 | * @ucontrol: control element information |
2b97eabc RP |
2306 | * |
2307 | * Callback to set the value of a dapm mixer control. | |
2308 | * | |
2309 | * Returns 0 for success. | |
2310 | */ | |
2311 | int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, | |
2312 | struct snd_ctl_elem_value *ucontrol) | |
2313 | { | |
fafd2176 SW |
2314 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2315 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2316 | struct snd_soc_codec *codec = widget->codec; | |
4eaa9819 JS |
2317 | struct soc_mixer_control *mc = |
2318 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
2319 | unsigned int reg = mc->reg; |
2320 | unsigned int shift = mc->shift; | |
4eaa9819 | 2321 | int max = mc->max; |
815ecf8d JS |
2322 | unsigned int mask = (1 << fls(max)) - 1; |
2323 | unsigned int invert = mc->invert; | |
e9cf7049 | 2324 | unsigned int val; |
97404f2e MB |
2325 | int connect, change; |
2326 | struct snd_soc_dapm_update update; | |
fafd2176 | 2327 | int wi; |
2b97eabc RP |
2328 | |
2329 | val = (ucontrol->value.integer.value[0] & mask); | |
2330 | ||
2331 | if (invert) | |
a7a4ac86 | 2332 | val = max - val; |
e9cf7049 | 2333 | mask = mask << shift; |
2b97eabc | 2334 | val = val << shift; |
2b97eabc | 2335 | |
fafd2176 SW |
2336 | if (val) |
2337 | /* new connection */ | |
2338 | connect = invert ? 0 : 1; | |
2339 | else | |
2340 | /* old connection must be powered down */ | |
2341 | connect = invert ? 1 : 0; | |
2342 | ||
2343 | mutex_lock(&codec->mutex); | |
2b97eabc | 2344 | |
e9cf7049 | 2345 | change = snd_soc_test_bits(widget->codec, reg, mask, val); |
97404f2e | 2346 | if (change) { |
fafd2176 SW |
2347 | for (wi = 0; wi < wlist->num_widgets; wi++) { |
2348 | widget = wlist->widgets[wi]; | |
283375ce | 2349 | |
fafd2176 | 2350 | widget->value = val; |
97404f2e | 2351 | |
fafd2176 SW |
2352 | update.kcontrol = kcontrol; |
2353 | update.widget = widget; | |
2354 | update.reg = reg; | |
2355 | update.mask = mask; | |
2356 | update.val = val; | |
2357 | widget->dapm->update = &update; | |
97404f2e | 2358 | |
40f02cd9 | 2359 | snd_soc_dapm_mixer_update_power(widget, kcontrol, connect); |
fafd2176 SW |
2360 | |
2361 | widget->dapm->update = NULL; | |
2362 | } | |
283375ce MB |
2363 | } |
2364 | ||
fafd2176 | 2365 | mutex_unlock(&codec->mutex); |
97404f2e | 2366 | return 0; |
2b97eabc RP |
2367 | } |
2368 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw); | |
2369 | ||
2370 | /** | |
2371 | * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback | |
2372 | * @kcontrol: mixer control | |
ac11a2b3 | 2373 | * @ucontrol: control element information |
2b97eabc RP |
2374 | * |
2375 | * Callback to get the value of a dapm enumerated double mixer control. | |
2376 | * | |
2377 | * Returns 0 for success. | |
2378 | */ | |
2379 | int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol, | |
2380 | struct snd_ctl_elem_value *ucontrol) | |
2381 | { | |
fafd2176 SW |
2382 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2383 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2b97eabc | 2384 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f | 2385 | unsigned int val, bitmask; |
2b97eabc | 2386 | |
f8ba0b7b | 2387 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
2388 | ; |
2389 | val = snd_soc_read(widget->codec, e->reg); | |
2390 | ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1); | |
2391 | if (e->shift_l != e->shift_r) | |
2392 | ucontrol->value.enumerated.item[1] = | |
2393 | (val >> e->shift_r) & (bitmask - 1); | |
2394 | ||
2395 | return 0; | |
2396 | } | |
2397 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double); | |
2398 | ||
2399 | /** | |
2400 | * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback | |
2401 | * @kcontrol: mixer control | |
ac11a2b3 | 2402 | * @ucontrol: control element information |
2b97eabc RP |
2403 | * |
2404 | * Callback to set the value of a dapm enumerated double mixer control. | |
2405 | * | |
2406 | * Returns 0 for success. | |
2407 | */ | |
2408 | int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, | |
2409 | struct snd_ctl_elem_value *ucontrol) | |
2410 | { | |
fafd2176 SW |
2411 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2412 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2413 | struct snd_soc_codec *codec = widget->codec; | |
2b97eabc | 2414 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
3a65577d | 2415 | unsigned int val, mux, change; |
46f5822f | 2416 | unsigned int mask, bitmask; |
97404f2e | 2417 | struct snd_soc_dapm_update update; |
fafd2176 | 2418 | int wi; |
2b97eabc | 2419 | |
f8ba0b7b | 2420 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc | 2421 | ; |
f8ba0b7b | 2422 | if (ucontrol->value.enumerated.item[0] > e->max - 1) |
2b97eabc RP |
2423 | return -EINVAL; |
2424 | mux = ucontrol->value.enumerated.item[0]; | |
2425 | val = mux << e->shift_l; | |
2426 | mask = (bitmask - 1) << e->shift_l; | |
2427 | if (e->shift_l != e->shift_r) { | |
f8ba0b7b | 2428 | if (ucontrol->value.enumerated.item[1] > e->max - 1) |
2b97eabc RP |
2429 | return -EINVAL; |
2430 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
2431 | mask |= (bitmask - 1) << e->shift_r; | |
2432 | } | |
2433 | ||
fafd2176 SW |
2434 | mutex_lock(&codec->mutex); |
2435 | ||
3a65577d | 2436 | change = snd_soc_test_bits(widget->codec, e->reg, mask, val); |
fafd2176 SW |
2437 | if (change) { |
2438 | for (wi = 0; wi < wlist->num_widgets; wi++) { | |
2439 | widget = wlist->widgets[wi]; | |
2440 | ||
2441 | widget->value = val; | |
1642e3d4 | 2442 | |
fafd2176 SW |
2443 | update.kcontrol = kcontrol; |
2444 | update.widget = widget; | |
2445 | update.reg = e->reg; | |
2446 | update.mask = mask; | |
2447 | update.val = val; | |
2448 | widget->dapm->update = &update; | |
1642e3d4 | 2449 | |
40f02cd9 | 2450 | snd_soc_dapm_mux_update_power(widget, kcontrol, mux, e); |
1642e3d4 | 2451 | |
fafd2176 SW |
2452 | widget->dapm->update = NULL; |
2453 | } | |
2454 | } | |
2b97eabc | 2455 | |
fafd2176 | 2456 | mutex_unlock(&codec->mutex); |
97404f2e | 2457 | return change; |
2b97eabc RP |
2458 | } |
2459 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double); | |
2460 | ||
d2b247a8 MB |
2461 | /** |
2462 | * snd_soc_dapm_get_enum_virt - Get virtual DAPM mux | |
2463 | * @kcontrol: mixer control | |
2464 | * @ucontrol: control element information | |
2465 | * | |
2466 | * Returns 0 for success. | |
2467 | */ | |
2468 | int snd_soc_dapm_get_enum_virt(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]; | |
d2b247a8 MB |
2473 | |
2474 | ucontrol->value.enumerated.item[0] = widget->value; | |
2475 | ||
2476 | return 0; | |
2477 | } | |
2478 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_virt); | |
2479 | ||
2480 | /** | |
2481 | * snd_soc_dapm_put_enum_virt - Set virtual DAPM mux | |
2482 | * @kcontrol: mixer control | |
2483 | * @ucontrol: control element information | |
2484 | * | |
2485 | * Returns 0 for success. | |
2486 | */ | |
2487 | int snd_soc_dapm_put_enum_virt(struct snd_kcontrol *kcontrol, | |
2488 | struct snd_ctl_elem_value *ucontrol) | |
2489 | { | |
fafd2176 SW |
2490 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2491 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2492 | struct snd_soc_codec *codec = widget->codec; | |
d2b247a8 MB |
2493 | struct soc_enum *e = |
2494 | (struct soc_enum *)kcontrol->private_value; | |
2495 | int change; | |
2496 | int ret = 0; | |
fafd2176 | 2497 | int wi; |
d2b247a8 MB |
2498 | |
2499 | if (ucontrol->value.enumerated.item[0] >= e->max) | |
2500 | return -EINVAL; | |
2501 | ||
fafd2176 | 2502 | mutex_lock(&codec->mutex); |
d2b247a8 MB |
2503 | |
2504 | change = widget->value != ucontrol->value.enumerated.item[0]; | |
fafd2176 SW |
2505 | if (change) { |
2506 | for (wi = 0; wi < wlist->num_widgets; wi++) { | |
2507 | widget = wlist->widgets[wi]; | |
2508 | ||
2509 | widget->value = ucontrol->value.enumerated.item[0]; | |
2510 | ||
40f02cd9 | 2511 | snd_soc_dapm_mux_update_power(widget, kcontrol, widget->value, e); |
fafd2176 SW |
2512 | } |
2513 | } | |
d2b247a8 | 2514 | |
fafd2176 | 2515 | mutex_unlock(&codec->mutex); |
d2b247a8 MB |
2516 | return ret; |
2517 | } | |
2518 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt); | |
2519 | ||
2e72f8e3 PU |
2520 | /** |
2521 | * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get | |
2522 | * callback | |
2523 | * @kcontrol: mixer control | |
2524 | * @ucontrol: control element information | |
2525 | * | |
2526 | * Callback to get the value of a dapm semi enumerated double mixer control. | |
2527 | * | |
2528 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
2529 | * used for handling bitfield coded enumeration for example. | |
2530 | * | |
2531 | * Returns 0 for success. | |
2532 | */ | |
2533 | int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol *kcontrol, | |
2534 | struct snd_ctl_elem_value *ucontrol) | |
2535 | { | |
fafd2176 SW |
2536 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2537 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
74155556 | 2538 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f | 2539 | unsigned int reg_val, val, mux; |
2e72f8e3 PU |
2540 | |
2541 | reg_val = snd_soc_read(widget->codec, e->reg); | |
2542 | val = (reg_val >> e->shift_l) & e->mask; | |
2543 | for (mux = 0; mux < e->max; mux++) { | |
2544 | if (val == e->values[mux]) | |
2545 | break; | |
2546 | } | |
2547 | ucontrol->value.enumerated.item[0] = mux; | |
2548 | if (e->shift_l != e->shift_r) { | |
2549 | val = (reg_val >> e->shift_r) & e->mask; | |
2550 | for (mux = 0; mux < e->max; mux++) { | |
2551 | if (val == e->values[mux]) | |
2552 | break; | |
2553 | } | |
2554 | ucontrol->value.enumerated.item[1] = mux; | |
2555 | } | |
2556 | ||
2557 | return 0; | |
2558 | } | |
2559 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double); | |
2560 | ||
2561 | /** | |
2562 | * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set | |
2563 | * callback | |
2564 | * @kcontrol: mixer control | |
2565 | * @ucontrol: control element information | |
2566 | * | |
2567 | * Callback to set the value of a dapm semi enumerated double mixer control. | |
2568 | * | |
2569 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
2570 | * used for handling bitfield coded enumeration for example. | |
2571 | * | |
2572 | * Returns 0 for success. | |
2573 | */ | |
2574 | int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol, | |
2575 | struct snd_ctl_elem_value *ucontrol) | |
2576 | { | |
fafd2176 SW |
2577 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2578 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2579 | struct snd_soc_codec *codec = widget->codec; | |
74155556 | 2580 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
3a65577d | 2581 | unsigned int val, mux, change; |
46f5822f | 2582 | unsigned int mask; |
97404f2e | 2583 | struct snd_soc_dapm_update update; |
fafd2176 | 2584 | int wi; |
2e72f8e3 PU |
2585 | |
2586 | if (ucontrol->value.enumerated.item[0] > e->max - 1) | |
2587 | return -EINVAL; | |
2588 | mux = ucontrol->value.enumerated.item[0]; | |
2589 | val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l; | |
2590 | mask = e->mask << e->shift_l; | |
2591 | if (e->shift_l != e->shift_r) { | |
2592 | if (ucontrol->value.enumerated.item[1] > e->max - 1) | |
2593 | return -EINVAL; | |
2594 | val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r; | |
2595 | mask |= e->mask << e->shift_r; | |
2596 | } | |
2597 | ||
fafd2176 SW |
2598 | mutex_lock(&codec->mutex); |
2599 | ||
3a65577d | 2600 | change = snd_soc_test_bits(widget->codec, e->reg, mask, val); |
fafd2176 SW |
2601 | if (change) { |
2602 | for (wi = 0; wi < wlist->num_widgets; wi++) { | |
2603 | widget = wlist->widgets[wi]; | |
1642e3d4 | 2604 | |
fafd2176 | 2605 | widget->value = val; |
1642e3d4 | 2606 | |
fafd2176 SW |
2607 | update.kcontrol = kcontrol; |
2608 | update.widget = widget; | |
2609 | update.reg = e->reg; | |
2610 | update.mask = mask; | |
2611 | update.val = val; | |
2612 | widget->dapm->update = &update; | |
1642e3d4 | 2613 | |
40f02cd9 | 2614 | snd_soc_dapm_mux_update_power(widget, kcontrol, mux, e); |
fafd2176 SW |
2615 | |
2616 | widget->dapm->update = NULL; | |
2617 | } | |
2618 | } | |
2e72f8e3 | 2619 | |
fafd2176 | 2620 | mutex_unlock(&codec->mutex); |
97404f2e | 2621 | return change; |
2e72f8e3 PU |
2622 | } |
2623 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double); | |
2624 | ||
8b37dbd2 MB |
2625 | /** |
2626 | * snd_soc_dapm_info_pin_switch - Info for a pin switch | |
2627 | * | |
2628 | * @kcontrol: mixer control | |
2629 | * @uinfo: control element information | |
2630 | * | |
2631 | * Callback to provide information about a pin switch control. | |
2632 | */ | |
2633 | int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol, | |
2634 | struct snd_ctl_elem_info *uinfo) | |
2635 | { | |
2636 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
2637 | uinfo->count = 1; | |
2638 | uinfo->value.integer.min = 0; | |
2639 | uinfo->value.integer.max = 1; | |
2640 | ||
2641 | return 0; | |
2642 | } | |
2643 | EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch); | |
2644 | ||
2645 | /** | |
2646 | * snd_soc_dapm_get_pin_switch - Get information for a pin switch | |
2647 | * | |
2648 | * @kcontrol: mixer control | |
2649 | * @ucontrol: Value | |
2650 | */ | |
2651 | int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol, | |
2652 | struct snd_ctl_elem_value *ucontrol) | |
2653 | { | |
2654 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
2655 | const char *pin = (const char *)kcontrol->private_value; | |
2656 | ||
2657 | mutex_lock(&codec->mutex); | |
2658 | ||
2659 | ucontrol->value.integer.value[0] = | |
ce6120cc | 2660 | snd_soc_dapm_get_pin_status(&codec->dapm, pin); |
8b37dbd2 MB |
2661 | |
2662 | mutex_unlock(&codec->mutex); | |
2663 | ||
2664 | return 0; | |
2665 | } | |
2666 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch); | |
2667 | ||
2668 | /** | |
2669 | * snd_soc_dapm_put_pin_switch - Set information for a pin switch | |
2670 | * | |
2671 | * @kcontrol: mixer control | |
2672 | * @ucontrol: Value | |
2673 | */ | |
2674 | int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol, | |
2675 | struct snd_ctl_elem_value *ucontrol) | |
2676 | { | |
2677 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
2678 | const char *pin = (const char *)kcontrol->private_value; | |
2679 | ||
2680 | mutex_lock(&codec->mutex); | |
2681 | ||
2682 | if (ucontrol->value.integer.value[0]) | |
ce6120cc | 2683 | snd_soc_dapm_enable_pin(&codec->dapm, pin); |
8b37dbd2 | 2684 | else |
ce6120cc | 2685 | snd_soc_dapm_disable_pin(&codec->dapm, pin); |
8b37dbd2 | 2686 | |
ce6120cc | 2687 | snd_soc_dapm_sync(&codec->dapm); |
8b37dbd2 MB |
2688 | |
2689 | mutex_unlock(&codec->mutex); | |
2690 | ||
2691 | return 0; | |
2692 | } | |
2693 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch); | |
2694 | ||
2b97eabc RP |
2695 | /** |
2696 | * snd_soc_dapm_new_control - create new dapm control | |
ce6120cc | 2697 | * @dapm: DAPM context |
2b97eabc RP |
2698 | * @widget: widget template |
2699 | * | |
2700 | * Creates a new dapm control based upon the template. | |
2701 | * | |
2702 | * Returns 0 for success else error. | |
2703 | */ | |
ce6120cc | 2704 | int snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
2705 | const struct snd_soc_dapm_widget *widget) |
2706 | { | |
2707 | struct snd_soc_dapm_widget *w; | |
ead9b919 | 2708 | size_t name_len; |
62ea874a | 2709 | int ret; |
2b97eabc RP |
2710 | |
2711 | if ((w = dapm_cnew_widget(widget)) == NULL) | |
2712 | return -ENOMEM; | |
2713 | ||
62ea874a MB |
2714 | switch (w->id) { |
2715 | case snd_soc_dapm_regulator_supply: | |
2716 | w->priv = devm_regulator_get(dapm->dev, w->name); | |
2717 | if (IS_ERR(w->priv)) { | |
2718 | ret = PTR_ERR(w->priv); | |
2719 | dev_err(dapm->dev, "Failed to request %s: %d\n", | |
2720 | w->name, ret); | |
2721 | return ret; | |
2722 | } | |
2723 | break; | |
2724 | default: | |
2725 | break; | |
2726 | } | |
2727 | ||
ead9b919 | 2728 | name_len = strlen(widget->name) + 1; |
88e8b9a8 | 2729 | if (dapm->codec && dapm->codec->name_prefix) |
ead9b919 JN |
2730 | name_len += 1 + strlen(dapm->codec->name_prefix); |
2731 | w->name = kmalloc(name_len, GFP_KERNEL); | |
2732 | if (w->name == NULL) { | |
2733 | kfree(w); | |
2734 | return -ENOMEM; | |
2735 | } | |
88e8b9a8 | 2736 | if (dapm->codec && dapm->codec->name_prefix) |
ead9b919 JN |
2737 | snprintf(w->name, name_len, "%s %s", |
2738 | dapm->codec->name_prefix, widget->name); | |
2739 | else | |
2740 | snprintf(w->name, name_len, "%s", widget->name); | |
2741 | ||
7ca3a18b MB |
2742 | switch (w->id) { |
2743 | case snd_soc_dapm_switch: | |
2744 | case snd_soc_dapm_mixer: | |
2745 | case snd_soc_dapm_mixer_named_ctl: | |
2746 | w->power_check = dapm_generic_check_power; | |
2747 | break; | |
2748 | case snd_soc_dapm_mux: | |
2749 | case snd_soc_dapm_virt_mux: | |
2750 | case snd_soc_dapm_value_mux: | |
2751 | w->power_check = dapm_generic_check_power; | |
2752 | break; | |
2753 | case snd_soc_dapm_adc: | |
2754 | case snd_soc_dapm_aif_out: | |
2755 | w->power_check = dapm_adc_check_power; | |
2756 | break; | |
2757 | case snd_soc_dapm_dac: | |
2758 | case snd_soc_dapm_aif_in: | |
2759 | w->power_check = dapm_dac_check_power; | |
2760 | break; | |
2761 | case snd_soc_dapm_pga: | |
2762 | case snd_soc_dapm_out_drv: | |
2763 | case snd_soc_dapm_input: | |
2764 | case snd_soc_dapm_output: | |
2765 | case snd_soc_dapm_micbias: | |
2766 | case snd_soc_dapm_spk: | |
2767 | case snd_soc_dapm_hp: | |
2768 | case snd_soc_dapm_mic: | |
2769 | case snd_soc_dapm_line: | |
2770 | w->power_check = dapm_generic_check_power; | |
2771 | break; | |
2772 | case snd_soc_dapm_supply: | |
62ea874a | 2773 | case snd_soc_dapm_regulator_supply: |
7ca3a18b MB |
2774 | w->power_check = dapm_supply_check_power; |
2775 | break; | |
2776 | default: | |
2777 | w->power_check = dapm_always_on_check_power; | |
2778 | break; | |
2779 | } | |
2780 | ||
97c866de | 2781 | dapm->n_widgets++; |
ce6120cc LG |
2782 | w->dapm = dapm; |
2783 | w->codec = dapm->codec; | |
b7950641 | 2784 | w->platform = dapm->platform; |
2b97eabc RP |
2785 | INIT_LIST_HEAD(&w->sources); |
2786 | INIT_LIST_HEAD(&w->sinks); | |
2787 | INIT_LIST_HEAD(&w->list); | |
db432b41 | 2788 | INIT_LIST_HEAD(&w->dirty); |
97c866de | 2789 | list_add(&w->list, &dapm->card->widgets); |
2b97eabc RP |
2790 | |
2791 | /* machine layer set ups unconnected pins and insertions */ | |
2792 | w->connected = 1; | |
2793 | return 0; | |
2794 | } | |
2795 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control); | |
2796 | ||
4ba1327a MB |
2797 | /** |
2798 | * snd_soc_dapm_new_controls - create new dapm controls | |
ce6120cc | 2799 | * @dapm: DAPM context |
4ba1327a MB |
2800 | * @widget: widget array |
2801 | * @num: number of widgets | |
2802 | * | |
2803 | * Creates new DAPM controls based upon the templates. | |
2804 | * | |
2805 | * Returns 0 for success else error. | |
2806 | */ | |
ce6120cc | 2807 | int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm, |
4ba1327a MB |
2808 | const struct snd_soc_dapm_widget *widget, |
2809 | int num) | |
2810 | { | |
2811 | int i, ret; | |
2812 | ||
2813 | for (i = 0; i < num; i++) { | |
ce6120cc | 2814 | ret = snd_soc_dapm_new_control(dapm, widget); |
b8b33cb5 | 2815 | if (ret < 0) { |
f7d41ae8 JN |
2816 | dev_err(dapm->dev, |
2817 | "ASoC: Failed to create DAPM control %s: %d\n", | |
2818 | widget->name, ret); | |
4ba1327a | 2819 | return ret; |
b8b33cb5 | 2820 | } |
4ba1327a MB |
2821 | widget++; |
2822 | } | |
2823 | return 0; | |
2824 | } | |
2825 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls); | |
2826 | ||
ce6120cc | 2827 | static void soc_dapm_stream_event(struct snd_soc_dapm_context *dapm, |
f0fba2ad | 2828 | const char *stream, int event) |
2b97eabc RP |
2829 | { |
2830 | struct snd_soc_dapm_widget *w; | |
2831 | ||
97c866de | 2832 | list_for_each_entry(w, &dapm->card->widgets, list) |
2b97eabc | 2833 | { |
97c866de | 2834 | if (!w->sname || w->dapm != dapm) |
2b97eabc | 2835 | continue; |
ee47b364 | 2836 | dev_vdbg(w->dapm->dev, "widget %s\n %s stream %s event %d\n", |
f7d41ae8 | 2837 | w->name, w->sname, stream, event); |
2b97eabc | 2838 | if (strstr(w->sname, stream)) { |
75c1f891 | 2839 | dapm_mark_dirty(w, "stream event"); |
2b97eabc RP |
2840 | switch(event) { |
2841 | case SND_SOC_DAPM_STREAM_START: | |
2842 | w->active = 1; | |
2843 | break; | |
2844 | case SND_SOC_DAPM_STREAM_STOP: | |
2845 | w->active = 0; | |
2846 | break; | |
2847 | case SND_SOC_DAPM_STREAM_SUSPEND: | |
2b97eabc | 2848 | case SND_SOC_DAPM_STREAM_RESUME: |
2b97eabc | 2849 | case SND_SOC_DAPM_STREAM_PAUSE_PUSH: |
2b97eabc RP |
2850 | case SND_SOC_DAPM_STREAM_PAUSE_RELEASE: |
2851 | break; | |
2852 | } | |
2853 | } | |
2854 | } | |
2b97eabc | 2855 | |
ce6120cc | 2856 | dapm_power_widgets(dapm, event); |
64a648c2 LG |
2857 | |
2858 | /* do we need to notify any clients that DAPM stream is complete */ | |
2859 | if (dapm->stream_event) | |
2860 | dapm->stream_event(dapm, event); | |
ce6120cc LG |
2861 | } |
2862 | ||
2863 | /** | |
2864 | * snd_soc_dapm_stream_event - send a stream event to the dapm core | |
2865 | * @rtd: PCM runtime data | |
2866 | * @stream: stream name | |
2867 | * @event: stream event | |
2868 | * | |
2869 | * Sends a stream event to the dapm core. The core then makes any | |
2870 | * necessary widget power changes. | |
2871 | * | |
2872 | * Returns 0 for success else error. | |
2873 | */ | |
2874 | int snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, | |
2875 | const char *stream, int event) | |
2876 | { | |
2877 | struct snd_soc_codec *codec = rtd->codec; | |
2878 | ||
2879 | if (stream == NULL) | |
2880 | return 0; | |
2881 | ||
2882 | mutex_lock(&codec->mutex); | |
2883 | soc_dapm_stream_event(&codec->dapm, stream, event); | |
8e8b2d67 | 2884 | mutex_unlock(&codec->mutex); |
2b97eabc RP |
2885 | return 0; |
2886 | } | |
2b97eabc RP |
2887 | |
2888 | /** | |
a5302181 | 2889 | * snd_soc_dapm_enable_pin - enable pin. |
ce6120cc | 2890 | * @dapm: DAPM context |
a5302181 | 2891 | * @pin: pin name |
2b97eabc | 2892 | * |
74b8f955 | 2893 | * Enables input/output pin and its parents or children widgets iff there is |
a5302181 LG |
2894 | * a valid audio route and active audio stream. |
2895 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2896 | * do any widget power switching. | |
2b97eabc | 2897 | */ |
ce6120cc | 2898 | int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin) |
2b97eabc | 2899 | { |
ce6120cc | 2900 | return snd_soc_dapm_set_pin(dapm, pin, 1); |
a5302181 LG |
2901 | } |
2902 | EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin); | |
2b97eabc | 2903 | |
da34183e MB |
2904 | /** |
2905 | * snd_soc_dapm_force_enable_pin - force a pin to be enabled | |
ce6120cc | 2906 | * @dapm: DAPM context |
da34183e MB |
2907 | * @pin: pin name |
2908 | * | |
2909 | * Enables input/output pin regardless of any other state. This is | |
2910 | * intended for use with microphone bias supplies used in microphone | |
2911 | * jack detection. | |
2912 | * | |
2913 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2914 | * do any widget power switching. | |
2915 | */ | |
ce6120cc LG |
2916 | int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm, |
2917 | const char *pin) | |
da34183e | 2918 | { |
91a5fca4 | 2919 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); |
da34183e | 2920 | |
91a5fca4 LPC |
2921 | if (!w) { |
2922 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); | |
2923 | return -EINVAL; | |
0d86733c MB |
2924 | } |
2925 | ||
91a5fca4 LPC |
2926 | dev_dbg(w->dapm->dev, "dapm: force enable pin %s\n", pin); |
2927 | w->connected = 1; | |
2928 | w->force = 1; | |
75c1f891 | 2929 | dapm_mark_dirty(w, "force enable"); |
da34183e | 2930 | |
91a5fca4 | 2931 | return 0; |
da34183e MB |
2932 | } |
2933 | EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin); | |
2934 | ||
a5302181 LG |
2935 | /** |
2936 | * snd_soc_dapm_disable_pin - disable pin. | |
ce6120cc | 2937 | * @dapm: DAPM context |
a5302181 LG |
2938 | * @pin: pin name |
2939 | * | |
74b8f955 | 2940 | * Disables input/output pin and its parents or children widgets. |
a5302181 LG |
2941 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to |
2942 | * do any widget power switching. | |
2943 | */ | |
ce6120cc LG |
2944 | int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm, |
2945 | const char *pin) | |
a5302181 | 2946 | { |
ce6120cc | 2947 | return snd_soc_dapm_set_pin(dapm, pin, 0); |
2b97eabc | 2948 | } |
a5302181 | 2949 | EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin); |
2b97eabc | 2950 | |
5817b52a MB |
2951 | /** |
2952 | * snd_soc_dapm_nc_pin - permanently disable pin. | |
ce6120cc | 2953 | * @dapm: DAPM context |
5817b52a MB |
2954 | * @pin: pin name |
2955 | * | |
2956 | * Marks the specified pin as being not connected, disabling it along | |
2957 | * any parent or child widgets. At present this is identical to | |
2958 | * snd_soc_dapm_disable_pin() but in future it will be extended to do | |
2959 | * additional things such as disabling controls which only affect | |
2960 | * paths through the pin. | |
2961 | * | |
2962 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2963 | * do any widget power switching. | |
2964 | */ | |
ce6120cc | 2965 | int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin) |
5817b52a | 2966 | { |
ce6120cc | 2967 | return snd_soc_dapm_set_pin(dapm, pin, 0); |
5817b52a MB |
2968 | } |
2969 | EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin); | |
2970 | ||
eeec12bf | 2971 | /** |
a5302181 | 2972 | * snd_soc_dapm_get_pin_status - get audio pin status |
ce6120cc | 2973 | * @dapm: DAPM context |
a5302181 | 2974 | * @pin: audio signal pin endpoint (or start point) |
eeec12bf | 2975 | * |
a5302181 | 2976 | * Get audio pin status - connected or disconnected. |
eeec12bf | 2977 | * |
a5302181 | 2978 | * Returns 1 for connected otherwise 0. |
eeec12bf | 2979 | */ |
ce6120cc LG |
2980 | int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm, |
2981 | const char *pin) | |
eeec12bf | 2982 | { |
91a5fca4 | 2983 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); |
eeec12bf | 2984 | |
91a5fca4 LPC |
2985 | if (w) |
2986 | return w->connected; | |
a68b38ad | 2987 | |
eeec12bf GG |
2988 | return 0; |
2989 | } | |
a5302181 | 2990 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status); |
eeec12bf | 2991 | |
1547aba9 MB |
2992 | /** |
2993 | * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint | |
ce6120cc | 2994 | * @dapm: DAPM context |
1547aba9 MB |
2995 | * @pin: audio signal pin endpoint (or start point) |
2996 | * | |
2997 | * Mark the given endpoint or pin as ignoring suspend. When the | |
2998 | * system is disabled a path between two endpoints flagged as ignoring | |
2999 | * suspend will not be disabled. The path must already be enabled via | |
3000 | * normal means at suspend time, it will not be turned on if it was not | |
3001 | * already enabled. | |
3002 | */ | |
ce6120cc LG |
3003 | int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm, |
3004 | const char *pin) | |
1547aba9 | 3005 | { |
91a5fca4 | 3006 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, false); |
1547aba9 | 3007 | |
91a5fca4 LPC |
3008 | if (!w) { |
3009 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); | |
3010 | return -EINVAL; | |
1547aba9 MB |
3011 | } |
3012 | ||
91a5fca4 LPC |
3013 | w->ignore_suspend = 1; |
3014 | ||
3015 | return 0; | |
1547aba9 MB |
3016 | } |
3017 | EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend); | |
3018 | ||
1633281b SW |
3019 | static bool snd_soc_dapm_widget_in_card_paths(struct snd_soc_card *card, |
3020 | struct snd_soc_dapm_widget *w) | |
3021 | { | |
3022 | struct snd_soc_dapm_path *p; | |
3023 | ||
3024 | list_for_each_entry(p, &card->paths, list) { | |
3025 | if ((p->source == w) || (p->sink == w)) { | |
3026 | dev_dbg(card->dev, | |
3027 | "... Path %s(id:%d dapm:%p) - %s(id:%d dapm:%p)\n", | |
3028 | p->source->name, p->source->id, p->source->dapm, | |
3029 | p->sink->name, p->sink->id, p->sink->dapm); | |
3030 | ||
3031 | /* Connected to something other than the codec */ | |
3032 | if (p->source->dapm != p->sink->dapm) | |
3033 | return true; | |
3034 | /* | |
3035 | * Loopback connection from codec external pin to | |
3036 | * codec external pin | |
3037 | */ | |
3038 | if (p->sink->id == snd_soc_dapm_input) { | |
3039 | switch (p->source->id) { | |
3040 | case snd_soc_dapm_output: | |
3041 | case snd_soc_dapm_micbias: | |
3042 | return true; | |
3043 | default: | |
3044 | break; | |
3045 | } | |
3046 | } | |
3047 | } | |
3048 | } | |
3049 | ||
3050 | return false; | |
3051 | } | |
3052 | ||
3053 | /** | |
3054 | * snd_soc_dapm_auto_nc_codec_pins - call snd_soc_dapm_nc_pin for unused pins | |
3055 | * @codec: The codec whose pins should be processed | |
3056 | * | |
3057 | * Automatically call snd_soc_dapm_nc_pin() for any external pins in the codec | |
3058 | * which are unused. Pins are used if they are connected externally to the | |
3059 | * codec, whether that be to some other device, or a loop-back connection to | |
3060 | * the codec itself. | |
3061 | */ | |
3062 | void snd_soc_dapm_auto_nc_codec_pins(struct snd_soc_codec *codec) | |
3063 | { | |
3064 | struct snd_soc_card *card = codec->card; | |
3065 | struct snd_soc_dapm_context *dapm = &codec->dapm; | |
3066 | struct snd_soc_dapm_widget *w; | |
3067 | ||
a094b80b | 3068 | dev_dbg(codec->dev, "Auto NC: DAPMs: card:%p codec:%p\n", |
1633281b SW |
3069 | &card->dapm, &codec->dapm); |
3070 | ||
3071 | list_for_each_entry(w, &card->widgets, list) { | |
3072 | if (w->dapm != dapm) | |
3073 | continue; | |
3074 | switch (w->id) { | |
3075 | case snd_soc_dapm_input: | |
3076 | case snd_soc_dapm_output: | |
3077 | case snd_soc_dapm_micbias: | |
a094b80b | 3078 | dev_dbg(codec->dev, "Auto NC: Checking widget %s\n", |
1633281b SW |
3079 | w->name); |
3080 | if (!snd_soc_dapm_widget_in_card_paths(card, w)) { | |
a094b80b | 3081 | dev_dbg(codec->dev, |
1633281b SW |
3082 | "... Not in map; disabling\n"); |
3083 | snd_soc_dapm_nc_pin(dapm, w->name); | |
3084 | } | |
3085 | break; | |
3086 | default: | |
3087 | break; | |
3088 | } | |
3089 | } | |
3090 | } | |
3091 | ||
2b97eabc RP |
3092 | /** |
3093 | * snd_soc_dapm_free - free dapm resources | |
728a5222 | 3094 | * @dapm: DAPM context |
2b97eabc RP |
3095 | * |
3096 | * Free all dapm widgets and resources. | |
3097 | */ | |
ce6120cc | 3098 | void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm) |
2b97eabc | 3099 | { |
ce6120cc | 3100 | snd_soc_dapm_sys_remove(dapm->dev); |
6c45e126 | 3101 | dapm_debugfs_cleanup(dapm); |
ce6120cc | 3102 | dapm_free_widgets(dapm); |
7be31be8 | 3103 | list_del(&dapm->list); |
2b97eabc RP |
3104 | } |
3105 | EXPORT_SYMBOL_GPL(snd_soc_dapm_free); | |
3106 | ||
ce6120cc | 3107 | static void soc_dapm_shutdown_codec(struct snd_soc_dapm_context *dapm) |
51737470 | 3108 | { |
51737470 MB |
3109 | struct snd_soc_dapm_widget *w; |
3110 | LIST_HEAD(down_list); | |
3111 | int powerdown = 0; | |
3112 | ||
97c866de JN |
3113 | list_for_each_entry(w, &dapm->card->widgets, list) { |
3114 | if (w->dapm != dapm) | |
3115 | continue; | |
51737470 | 3116 | if (w->power) { |
828a842f | 3117 | dapm_seq_insert(w, &down_list, false); |
c2caa4da | 3118 | w->power = 0; |
51737470 MB |
3119 | powerdown = 1; |
3120 | } | |
3121 | } | |
3122 | ||
3123 | /* If there were no widgets to power down we're already in | |
3124 | * standby. | |
3125 | */ | |
3126 | if (powerdown) { | |
ed5a4c47 | 3127 | snd_soc_dapm_set_bias_level(dapm, SND_SOC_BIAS_PREPARE); |
828a842f | 3128 | dapm_seq_run(dapm, &down_list, 0, false); |
ed5a4c47 | 3129 | snd_soc_dapm_set_bias_level(dapm, SND_SOC_BIAS_STANDBY); |
51737470 | 3130 | } |
f0fba2ad LG |
3131 | } |
3132 | ||
3133 | /* | |
3134 | * snd_soc_dapm_shutdown - callback for system shutdown | |
3135 | */ | |
3136 | void snd_soc_dapm_shutdown(struct snd_soc_card *card) | |
3137 | { | |
3138 | struct snd_soc_codec *codec; | |
3139 | ||
ce6120cc LG |
3140 | list_for_each_entry(codec, &card->codec_dev_list, list) { |
3141 | soc_dapm_shutdown_codec(&codec->dapm); | |
ed5a4c47 | 3142 | snd_soc_dapm_set_bias_level(&codec->dapm, SND_SOC_BIAS_OFF); |
ce6120cc | 3143 | } |
51737470 MB |
3144 | } |
3145 | ||
2b97eabc | 3146 | /* Module information */ |
d331124d | 3147 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
2b97eabc RP |
3148 | MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC"); |
3149 | MODULE_LICENSE("GPL"); |