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Commit | Line | Data |
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2b97eabc RP |
1 | /* |
2 | * soc-dapm.c -- ALSA SoC Dynamic Audio Power Management | |
3 | * | |
4 | * Copyright 2005 Wolfson Microelectronics PLC. | |
d331124d | 5 | * Author: Liam Girdwood <lrg@slimlogic.co.uk> |
2b97eabc RP |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2 of the License, or (at your | |
10 | * option) any later version. | |
11 | * | |
2b97eabc RP |
12 | * Features: |
13 | * o Changes power status of internal codec blocks depending on the | |
14 | * dynamic configuration of codec internal audio paths and active | |
74b8f955 | 15 | * DACs/ADCs. |
2b97eabc RP |
16 | * o Platform power domain - can support external components i.e. amps and |
17 | * mic/meadphone insertion events. | |
18 | * o Automatic Mic Bias support | |
19 | * o Jack insertion power event initiation - e.g. hp insertion will enable | |
20 | * sinks, dacs, etc | |
3a4fa0a2 | 21 | * o Delayed powerdown of audio susbsystem to reduce pops between a quick |
2b97eabc RP |
22 | * device reopen. |
23 | * | |
24 | * Todo: | |
25 | * o DAPM power change sequencing - allow for configurable per | |
26 | * codec sequences. | |
27 | * o Support for analogue bias optimisation. | |
28 | * o Support for reduced codec oversampling rates. | |
29 | * o Support for reduced codec bias currents. | |
30 | */ | |
31 | ||
32 | #include <linux/module.h> | |
33 | #include <linux/moduleparam.h> | |
34 | #include <linux/init.h> | |
35 | #include <linux/delay.h> | |
36 | #include <linux/pm.h> | |
37 | #include <linux/bitops.h> | |
38 | #include <linux/platform_device.h> | |
39 | #include <linux/jiffies.h> | |
20496ff3 | 40 | #include <linux/debugfs.h> |
5a0e3ad6 | 41 | #include <linux/slab.h> |
2b97eabc RP |
42 | #include <sound/core.h> |
43 | #include <sound/pcm.h> | |
44 | #include <sound/pcm_params.h> | |
ce6120cc | 45 | #include <sound/soc.h> |
2b97eabc RP |
46 | #include <sound/initval.h> |
47 | ||
84e90930 MB |
48 | #include <trace/events/asoc.h> |
49 | ||
2b97eabc RP |
50 | /* dapm power sequences - make this per codec in the future */ |
51 | static int dapm_up_seq[] = { | |
38357ab2 MB |
52 | [snd_soc_dapm_pre] = 0, |
53 | [snd_soc_dapm_supply] = 1, | |
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, | |
59 | [snd_soc_dapm_value_mux] = 5, | |
60 | [snd_soc_dapm_dac] = 6, | |
61 | [snd_soc_dapm_mixer] = 7, | |
62 | [snd_soc_dapm_mixer_named_ctl] = 7, | |
63 | [snd_soc_dapm_pga] = 8, | |
64 | [snd_soc_dapm_adc] = 9, | |
d88429a6 | 65 | [snd_soc_dapm_out_drv] = 10, |
010ff262 MB |
66 | [snd_soc_dapm_hp] = 10, |
67 | [snd_soc_dapm_spk] = 10, | |
68 | [snd_soc_dapm_post] = 11, | |
2b97eabc | 69 | }; |
ca9c1aae | 70 | |
2b97eabc | 71 | static int dapm_down_seq[] = { |
38357ab2 MB |
72 | [snd_soc_dapm_pre] = 0, |
73 | [snd_soc_dapm_adc] = 1, | |
74 | [snd_soc_dapm_hp] = 2, | |
1ca04065 | 75 | [snd_soc_dapm_spk] = 2, |
d88429a6 | 76 | [snd_soc_dapm_out_drv] = 2, |
38357ab2 MB |
77 | [snd_soc_dapm_pga] = 4, |
78 | [snd_soc_dapm_mixer_named_ctl] = 5, | |
e3d4dabd MB |
79 | [snd_soc_dapm_mixer] = 5, |
80 | [snd_soc_dapm_dac] = 6, | |
81 | [snd_soc_dapm_mic] = 7, | |
82 | [snd_soc_dapm_micbias] = 8, | |
83 | [snd_soc_dapm_mux] = 9, | |
84 | [snd_soc_dapm_value_mux] = 9, | |
010ff262 MB |
85 | [snd_soc_dapm_aif_in] = 10, |
86 | [snd_soc_dapm_aif_out] = 10, | |
87 | [snd_soc_dapm_supply] = 11, | |
88 | [snd_soc_dapm_post] = 12, | |
2b97eabc RP |
89 | }; |
90 | ||
12ef193d | 91 | static void pop_wait(u32 pop_time) |
15e4c72f MB |
92 | { |
93 | if (pop_time) | |
94 | schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time)); | |
95 | } | |
96 | ||
fd8d3bc0 | 97 | static void pop_dbg(struct device *dev, u32 pop_time, const char *fmt, ...) |
15e4c72f MB |
98 | { |
99 | va_list args; | |
fd8d3bc0 | 100 | char *buf; |
15e4c72f | 101 | |
fd8d3bc0 JN |
102 | if (!pop_time) |
103 | return; | |
15e4c72f | 104 | |
fd8d3bc0 JN |
105 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); |
106 | if (buf == NULL) | |
107 | return; | |
15e4c72f | 108 | |
fd8d3bc0 JN |
109 | va_start(args, fmt); |
110 | vsnprintf(buf, PAGE_SIZE, fmt, args); | |
111 | dev_info(dev, buf); | |
15e4c72f | 112 | va_end(args); |
fd8d3bc0 JN |
113 | |
114 | kfree(buf); | |
15e4c72f MB |
115 | } |
116 | ||
2b97eabc | 117 | /* create a new dapm widget */ |
88cb4290 | 118 | static inline struct snd_soc_dapm_widget *dapm_cnew_widget( |
2b97eabc RP |
119 | const struct snd_soc_dapm_widget *_widget) |
120 | { | |
88cb4290 | 121 | return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL); |
2b97eabc RP |
122 | } |
123 | ||
452c5eaa MB |
124 | /** |
125 | * snd_soc_dapm_set_bias_level - set the bias level for the system | |
f0fba2ad | 126 | * @card: audio device |
452c5eaa MB |
127 | * @level: level to configure |
128 | * | |
129 | * Configure the bias (power) levels for the SoC audio device. | |
130 | * | |
131 | * Returns 0 for success else error. | |
132 | */ | |
f0fba2ad | 133 | static int snd_soc_dapm_set_bias_level(struct snd_soc_card *card, |
ce6120cc LG |
134 | struct snd_soc_dapm_context *dapm, |
135 | enum snd_soc_bias_level level) | |
452c5eaa | 136 | { |
452c5eaa MB |
137 | int ret = 0; |
138 | ||
f83fba8b MB |
139 | switch (level) { |
140 | case SND_SOC_BIAS_ON: | |
ce6120cc | 141 | dev_dbg(dapm->dev, "Setting full bias\n"); |
f83fba8b MB |
142 | break; |
143 | case SND_SOC_BIAS_PREPARE: | |
ce6120cc | 144 | dev_dbg(dapm->dev, "Setting bias prepare\n"); |
f83fba8b MB |
145 | break; |
146 | case SND_SOC_BIAS_STANDBY: | |
ce6120cc | 147 | dev_dbg(dapm->dev, "Setting standby bias\n"); |
f83fba8b MB |
148 | break; |
149 | case SND_SOC_BIAS_OFF: | |
ce6120cc | 150 | dev_dbg(dapm->dev, "Setting bias off\n"); |
f83fba8b MB |
151 | break; |
152 | default: | |
ce6120cc | 153 | dev_err(dapm->dev, "Setting invalid bias %d\n", level); |
f83fba8b MB |
154 | return -EINVAL; |
155 | } | |
156 | ||
84e90930 MB |
157 | trace_snd_soc_bias_level_start(card, level); |
158 | ||
f0fba2ad | 159 | if (card && card->set_bias_level) |
452c5eaa | 160 | ret = card->set_bias_level(card, level); |
474e09ca | 161 | if (ret == 0) { |
ce6120cc LG |
162 | if (dapm->codec && dapm->codec->driver->set_bias_level) |
163 | ret = dapm->codec->driver->set_bias_level(dapm->codec, level); | |
474e09ca | 164 | else |
ce6120cc | 165 | dapm->bias_level = level; |
474e09ca | 166 | } |
1badabd9 MB |
167 | if (ret == 0) { |
168 | if (card && card->set_bias_level_post) | |
169 | ret = card->set_bias_level_post(card, level); | |
170 | } | |
452c5eaa | 171 | |
84e90930 MB |
172 | trace_snd_soc_bias_level_done(card, level); |
173 | ||
452c5eaa MB |
174 | return ret; |
175 | } | |
176 | ||
2b97eabc RP |
177 | /* set up initial codec paths */ |
178 | static void dapm_set_path_status(struct snd_soc_dapm_widget *w, | |
179 | struct snd_soc_dapm_path *p, int i) | |
180 | { | |
181 | switch (w->id) { | |
182 | case snd_soc_dapm_switch: | |
ca9c1aae IM |
183 | case snd_soc_dapm_mixer: |
184 | case snd_soc_dapm_mixer_named_ctl: { | |
2b97eabc | 185 | int val; |
4eaa9819 JS |
186 | struct soc_mixer_control *mc = (struct soc_mixer_control *) |
187 | w->kcontrols[i].private_value; | |
815ecf8d JS |
188 | unsigned int reg = mc->reg; |
189 | unsigned int shift = mc->shift; | |
4eaa9819 | 190 | int max = mc->max; |
815ecf8d JS |
191 | unsigned int mask = (1 << fls(max)) - 1; |
192 | unsigned int invert = mc->invert; | |
2b97eabc RP |
193 | |
194 | val = snd_soc_read(w->codec, reg); | |
195 | val = (val >> shift) & mask; | |
196 | ||
197 | if ((invert && !val) || (!invert && val)) | |
198 | p->connect = 1; | |
199 | else | |
200 | p->connect = 0; | |
201 | } | |
202 | break; | |
203 | case snd_soc_dapm_mux: { | |
204 | struct soc_enum *e = (struct soc_enum *)w->kcontrols[i].private_value; | |
205 | int val, item, bitmask; | |
206 | ||
f8ba0b7b | 207 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
208 | ; |
209 | val = snd_soc_read(w->codec, e->reg); | |
210 | item = (val >> e->shift_l) & (bitmask - 1); | |
211 | ||
212 | p->connect = 0; | |
f8ba0b7b | 213 | for (i = 0; i < e->max; i++) { |
2b97eabc RP |
214 | if (!(strcmp(p->name, e->texts[i])) && item == i) |
215 | p->connect = 1; | |
216 | } | |
217 | } | |
218 | break; | |
2e72f8e3 | 219 | case snd_soc_dapm_value_mux: { |
74155556 | 220 | struct soc_enum *e = (struct soc_enum *) |
2e72f8e3 PU |
221 | w->kcontrols[i].private_value; |
222 | int val, item; | |
223 | ||
224 | val = snd_soc_read(w->codec, e->reg); | |
225 | val = (val >> e->shift_l) & e->mask; | |
226 | for (item = 0; item < e->max; item++) { | |
227 | if (val == e->values[item]) | |
228 | break; | |
229 | } | |
230 | ||
231 | p->connect = 0; | |
232 | for (i = 0; i < e->max; i++) { | |
233 | if (!(strcmp(p->name, e->texts[i])) && item == i) | |
234 | p->connect = 1; | |
235 | } | |
236 | } | |
237 | break; | |
2b97eabc RP |
238 | /* does not effect routing - always connected */ |
239 | case snd_soc_dapm_pga: | |
d88429a6 | 240 | case snd_soc_dapm_out_drv: |
2b97eabc RP |
241 | case snd_soc_dapm_output: |
242 | case snd_soc_dapm_adc: | |
243 | case snd_soc_dapm_input: | |
244 | case snd_soc_dapm_dac: | |
245 | case snd_soc_dapm_micbias: | |
246 | case snd_soc_dapm_vmid: | |
246d0a17 | 247 | case snd_soc_dapm_supply: |
010ff262 MB |
248 | case snd_soc_dapm_aif_in: |
249 | case snd_soc_dapm_aif_out: | |
2b97eabc RP |
250 | p->connect = 1; |
251 | break; | |
252 | /* does effect routing - dynamically connected */ | |
253 | case snd_soc_dapm_hp: | |
254 | case snd_soc_dapm_mic: | |
255 | case snd_soc_dapm_spk: | |
256 | case snd_soc_dapm_line: | |
257 | case snd_soc_dapm_pre: | |
258 | case snd_soc_dapm_post: | |
259 | p->connect = 0; | |
260 | break; | |
261 | } | |
262 | } | |
263 | ||
74b8f955 | 264 | /* connect mux widget to its interconnecting audio paths */ |
ce6120cc | 265 | static int dapm_connect_mux(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
266 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, |
267 | struct snd_soc_dapm_path *path, const char *control_name, | |
268 | const struct snd_kcontrol_new *kcontrol) | |
269 | { | |
270 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
271 | int i; | |
272 | ||
f8ba0b7b | 273 | for (i = 0; i < e->max; i++) { |
2b97eabc | 274 | if (!(strcmp(control_name, e->texts[i]))) { |
8ddab3f5 | 275 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
276 | list_add(&path->list_sink, &dest->sources); |
277 | list_add(&path->list_source, &src->sinks); | |
278 | path->name = (char*)e->texts[i]; | |
279 | dapm_set_path_status(dest, path, 0); | |
280 | return 0; | |
281 | } | |
282 | } | |
283 | ||
284 | return -ENODEV; | |
285 | } | |
286 | ||
74b8f955 | 287 | /* connect mixer widget to its interconnecting audio paths */ |
ce6120cc | 288 | static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
289 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, |
290 | struct snd_soc_dapm_path *path, const char *control_name) | |
291 | { | |
292 | int i; | |
293 | ||
294 | /* search for mixer kcontrol */ | |
295 | for (i = 0; i < dest->num_kcontrols; i++) { | |
296 | if (!strcmp(control_name, dest->kcontrols[i].name)) { | |
8ddab3f5 | 297 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
298 | list_add(&path->list_sink, &dest->sources); |
299 | list_add(&path->list_source, &src->sinks); | |
300 | path->name = dest->kcontrols[i].name; | |
301 | dapm_set_path_status(dest, path, i); | |
302 | return 0; | |
303 | } | |
304 | } | |
305 | return -ENODEV; | |
306 | } | |
307 | ||
308 | /* update dapm codec register bits */ | |
309 | static int dapm_update_bits(struct snd_soc_dapm_widget *widget) | |
310 | { | |
311 | int change, power; | |
46f5822f | 312 | unsigned int old, new; |
2b97eabc | 313 | struct snd_soc_codec *codec = widget->codec; |
ce6120cc | 314 | struct snd_soc_dapm_context *dapm = widget->dapm; |
3a45b867 | 315 | struct snd_soc_card *card = dapm->card; |
2b97eabc RP |
316 | |
317 | /* check for valid widgets */ | |
318 | if (widget->reg < 0 || widget->id == snd_soc_dapm_input || | |
319 | widget->id == snd_soc_dapm_output || | |
320 | widget->id == snd_soc_dapm_hp || | |
321 | widget->id == snd_soc_dapm_mic || | |
322 | widget->id == snd_soc_dapm_line || | |
323 | widget->id == snd_soc_dapm_spk) | |
324 | return 0; | |
325 | ||
326 | power = widget->power; | |
327 | if (widget->invert) | |
328 | power = (power ? 0:1); | |
329 | ||
330 | old = snd_soc_read(codec, widget->reg); | |
331 | new = (old & ~(0x1 << widget->shift)) | (power << widget->shift); | |
332 | ||
333 | change = old != new; | |
334 | if (change) { | |
fd8d3bc0 JN |
335 | pop_dbg(dapm->dev, card->pop_time, |
336 | "pop test %s : %s in %d ms\n", | |
12ef193d | 337 | widget->name, widget->power ? "on" : "off", |
3a45b867 JN |
338 | card->pop_time); |
339 | pop_wait(card->pop_time); | |
69224719 | 340 | snd_soc_write(codec, widget->reg, new); |
2b97eabc | 341 | } |
f7d41ae8 JN |
342 | dev_dbg(dapm->dev, "reg %x old %x new %x change %d\n", widget->reg, |
343 | old, new, change); | |
2b97eabc RP |
344 | return change; |
345 | } | |
346 | ||
2b97eabc | 347 | /* create new dapm mixer control */ |
ce6120cc | 348 | static int dapm_new_mixer(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
349 | struct snd_soc_dapm_widget *w) |
350 | { | |
351 | int i, ret = 0; | |
219b93f5 | 352 | size_t name_len; |
2b97eabc | 353 | struct snd_soc_dapm_path *path; |
ce6120cc | 354 | struct snd_card *card = dapm->codec->card->snd_card; |
2b97eabc RP |
355 | |
356 | /* add kcontrol */ | |
357 | for (i = 0; i < w->num_kcontrols; i++) { | |
358 | ||
359 | /* match name */ | |
360 | list_for_each_entry(path, &w->sources, list_sink) { | |
361 | ||
362 | /* mixer/mux paths name must match control name */ | |
363 | if (path->name != (char*)w->kcontrols[i].name) | |
364 | continue; | |
365 | ||
ca9c1aae IM |
366 | /* add dapm control with long name. |
367 | * for dapm_mixer this is the concatenation of the | |
368 | * mixer and kcontrol name. | |
369 | * for dapm_mixer_named_ctl this is simply the | |
370 | * kcontrol name. | |
371 | */ | |
372 | name_len = strlen(w->kcontrols[i].name) + 1; | |
07495f3e | 373 | if (w->id != snd_soc_dapm_mixer_named_ctl) |
ca9c1aae IM |
374 | name_len += 1 + strlen(w->name); |
375 | ||
219b93f5 | 376 | path->long_name = kmalloc(name_len, GFP_KERNEL); |
ca9c1aae | 377 | |
2b97eabc RP |
378 | if (path->long_name == NULL) |
379 | return -ENOMEM; | |
380 | ||
ca9c1aae | 381 | switch (w->id) { |
ca9c1aae IM |
382 | default: |
383 | snprintf(path->long_name, name_len, "%s %s", | |
384 | w->name, w->kcontrols[i].name); | |
07495f3e | 385 | break; |
ca9c1aae IM |
386 | case snd_soc_dapm_mixer_named_ctl: |
387 | snprintf(path->long_name, name_len, "%s", | |
388 | w->kcontrols[i].name); | |
07495f3e | 389 | break; |
ca9c1aae IM |
390 | } |
391 | ||
219b93f5 MB |
392 | path->long_name[name_len - 1] = '\0'; |
393 | ||
2b97eabc RP |
394 | path->kcontrol = snd_soc_cnew(&w->kcontrols[i], w, |
395 | path->long_name); | |
ce6120cc | 396 | ret = snd_ctl_add(card, path->kcontrol); |
2b97eabc | 397 | if (ret < 0) { |
f7d41ae8 JN |
398 | dev_err(dapm->dev, |
399 | "asoc: failed to add dapm kcontrol %s: %d\n", | |
400 | path->long_name, ret); | |
2b97eabc RP |
401 | kfree(path->long_name); |
402 | path->long_name = NULL; | |
403 | return ret; | |
404 | } | |
405 | } | |
406 | } | |
407 | return ret; | |
408 | } | |
409 | ||
410 | /* create new dapm mux control */ | |
ce6120cc | 411 | static int dapm_new_mux(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
412 | struct snd_soc_dapm_widget *w) |
413 | { | |
414 | struct snd_soc_dapm_path *path = NULL; | |
415 | struct snd_kcontrol *kcontrol; | |
ce6120cc | 416 | struct snd_card *card = dapm->codec->card->snd_card; |
2b97eabc RP |
417 | int ret = 0; |
418 | ||
419 | if (!w->num_kcontrols) { | |
f7d41ae8 | 420 | dev_err(dapm->dev, "asoc: mux %s has no controls\n", w->name); |
2b97eabc RP |
421 | return -EINVAL; |
422 | } | |
423 | ||
424 | kcontrol = snd_soc_cnew(&w->kcontrols[0], w, w->name); | |
ce6120cc LG |
425 | ret = snd_ctl_add(card, kcontrol); |
426 | ||
2b97eabc RP |
427 | if (ret < 0) |
428 | goto err; | |
429 | ||
430 | list_for_each_entry(path, &w->sources, list_sink) | |
431 | path->kcontrol = kcontrol; | |
432 | ||
433 | return ret; | |
434 | ||
435 | err: | |
f7d41ae8 | 436 | dev_err(dapm->dev, "asoc: failed to add kcontrol %s\n", w->name); |
2b97eabc RP |
437 | return ret; |
438 | } | |
439 | ||
440 | /* create new dapm volume control */ | |
ce6120cc | 441 | static int dapm_new_pga(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
442 | struct snd_soc_dapm_widget *w) |
443 | { | |
a6c65736 | 444 | if (w->num_kcontrols) |
f7d41ae8 JN |
445 | dev_err(w->dapm->dev, |
446 | "asoc: PGA controls not supported: '%s'\n", w->name); | |
2b97eabc | 447 | |
a6c65736 | 448 | return 0; |
2b97eabc RP |
449 | } |
450 | ||
451 | /* reset 'walked' bit for each dapm path */ | |
ce6120cc | 452 | static inline void dapm_clear_walk(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
453 | { |
454 | struct snd_soc_dapm_path *p; | |
455 | ||
8ddab3f5 | 456 | list_for_each_entry(p, &dapm->card->paths, list) |
2b97eabc RP |
457 | p->walked = 0; |
458 | } | |
459 | ||
9949788b MB |
460 | /* We implement power down on suspend by checking the power state of |
461 | * the ALSA card - when we are suspending the ALSA state for the card | |
462 | * is set to D3. | |
463 | */ | |
464 | static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget) | |
465 | { | |
ce6120cc | 466 | int level = snd_power_get_state(widget->dapm->codec->card->snd_card); |
9949788b | 467 | |
f0fba2ad | 468 | switch (level) { |
9949788b MB |
469 | case SNDRV_CTL_POWER_D3hot: |
470 | case SNDRV_CTL_POWER_D3cold: | |
1547aba9 | 471 | if (widget->ignore_suspend) |
f7d41ae8 JN |
472 | dev_dbg(widget->dapm->dev, "%s ignoring suspend\n", |
473 | widget->name); | |
1547aba9 | 474 | return widget->ignore_suspend; |
9949788b MB |
475 | default: |
476 | return 1; | |
477 | } | |
478 | } | |
479 | ||
2b97eabc RP |
480 | /* |
481 | * Recursively check for a completed path to an active or physically connected | |
482 | * output widget. Returns number of complete paths. | |
483 | */ | |
484 | static int is_connected_output_ep(struct snd_soc_dapm_widget *widget) | |
485 | { | |
486 | struct snd_soc_dapm_path *path; | |
487 | int con = 0; | |
488 | ||
246d0a17 MB |
489 | if (widget->id == snd_soc_dapm_supply) |
490 | return 0; | |
491 | ||
010ff262 MB |
492 | switch (widget->id) { |
493 | case snd_soc_dapm_adc: | |
494 | case snd_soc_dapm_aif_out: | |
495 | if (widget->active) | |
9949788b | 496 | return snd_soc_dapm_suspend_check(widget); |
010ff262 MB |
497 | default: |
498 | break; | |
499 | } | |
2b97eabc RP |
500 | |
501 | if (widget->connected) { | |
502 | /* connected pin ? */ | |
503 | if (widget->id == snd_soc_dapm_output && !widget->ext) | |
9949788b | 504 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
505 | |
506 | /* connected jack or spk ? */ | |
507 | if (widget->id == snd_soc_dapm_hp || widget->id == snd_soc_dapm_spk || | |
eaeae5d9 | 508 | (widget->id == snd_soc_dapm_line && !list_empty(&widget->sources))) |
9949788b | 509 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
510 | } |
511 | ||
512 | list_for_each_entry(path, &widget->sinks, list_source) { | |
513 | if (path->walked) | |
514 | continue; | |
515 | ||
516 | if (path->sink && path->connect) { | |
517 | path->walked = 1; | |
518 | con += is_connected_output_ep(path->sink); | |
519 | } | |
520 | } | |
521 | ||
522 | return con; | |
523 | } | |
524 | ||
525 | /* | |
526 | * Recursively check for a completed path to an active or physically connected | |
527 | * input widget. Returns number of complete paths. | |
528 | */ | |
529 | static int is_connected_input_ep(struct snd_soc_dapm_widget *widget) | |
530 | { | |
531 | struct snd_soc_dapm_path *path; | |
532 | int con = 0; | |
533 | ||
246d0a17 MB |
534 | if (widget->id == snd_soc_dapm_supply) |
535 | return 0; | |
536 | ||
2b97eabc | 537 | /* active stream ? */ |
010ff262 MB |
538 | switch (widget->id) { |
539 | case snd_soc_dapm_dac: | |
540 | case snd_soc_dapm_aif_in: | |
541 | if (widget->active) | |
9949788b | 542 | return snd_soc_dapm_suspend_check(widget); |
010ff262 MB |
543 | default: |
544 | break; | |
545 | } | |
2b97eabc RP |
546 | |
547 | if (widget->connected) { | |
548 | /* connected pin ? */ | |
549 | if (widget->id == snd_soc_dapm_input && !widget->ext) | |
9949788b | 550 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
551 | |
552 | /* connected VMID/Bias for lower pops */ | |
553 | if (widget->id == snd_soc_dapm_vmid) | |
9949788b | 554 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
555 | |
556 | /* connected jack ? */ | |
eaeae5d9 PU |
557 | if (widget->id == snd_soc_dapm_mic || |
558 | (widget->id == snd_soc_dapm_line && !list_empty(&widget->sinks))) | |
9949788b | 559 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
560 | } |
561 | ||
562 | list_for_each_entry(path, &widget->sources, list_sink) { | |
563 | if (path->walked) | |
564 | continue; | |
565 | ||
566 | if (path->source && path->connect) { | |
567 | path->walked = 1; | |
568 | con += is_connected_input_ep(path->source); | |
569 | } | |
570 | } | |
571 | ||
572 | return con; | |
573 | } | |
574 | ||
e2be2ccf JN |
575 | /* |
576 | * Handler for generic register modifier widget. | |
577 | */ | |
578 | int dapm_reg_event(struct snd_soc_dapm_widget *w, | |
579 | struct snd_kcontrol *kcontrol, int event) | |
580 | { | |
581 | unsigned int val; | |
582 | ||
583 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
584 | val = w->on_val; | |
585 | else | |
586 | val = w->off_val; | |
587 | ||
588 | snd_soc_update_bits(w->codec, -(w->reg + 1), | |
589 | w->mask << w->shift, val << w->shift); | |
590 | ||
591 | return 0; | |
592 | } | |
11589418 | 593 | EXPORT_SYMBOL_GPL(dapm_reg_event); |
e2be2ccf | 594 | |
025756ec MB |
595 | /* Standard power change method, used to apply power changes to most |
596 | * widgets. | |
597 | */ | |
598 | static int dapm_generic_apply_power(struct snd_soc_dapm_widget *w) | |
599 | { | |
600 | int ret; | |
601 | ||
602 | /* call any power change event handlers */ | |
603 | if (w->event) | |
f7d41ae8 | 604 | dev_dbg(w->dapm->dev, "power %s event for %s flags %x\n", |
025756ec MB |
605 | w->power ? "on" : "off", |
606 | w->name, w->event_flags); | |
607 | ||
608 | /* power up pre event */ | |
609 | if (w->power && w->event && | |
610 | (w->event_flags & SND_SOC_DAPM_PRE_PMU)) { | |
611 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMU); | |
612 | if (ret < 0) | |
613 | return ret; | |
614 | } | |
615 | ||
616 | /* power down pre event */ | |
617 | if (!w->power && w->event && | |
618 | (w->event_flags & SND_SOC_DAPM_PRE_PMD)) { | |
619 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMD); | |
620 | if (ret < 0) | |
621 | return ret; | |
622 | } | |
623 | ||
025756ec MB |
624 | dapm_update_bits(w); |
625 | ||
025756ec MB |
626 | /* power up post event */ |
627 | if (w->power && w->event && | |
628 | (w->event_flags & SND_SOC_DAPM_POST_PMU)) { | |
629 | ret = w->event(w, | |
630 | NULL, SND_SOC_DAPM_POST_PMU); | |
631 | if (ret < 0) | |
632 | return ret; | |
633 | } | |
634 | ||
635 | /* power down post event */ | |
636 | if (!w->power && w->event && | |
637 | (w->event_flags & SND_SOC_DAPM_POST_PMD)) { | |
638 | ret = w->event(w, NULL, SND_SOC_DAPM_POST_PMD); | |
639 | if (ret < 0) | |
640 | return ret; | |
641 | } | |
642 | ||
643 | return 0; | |
644 | } | |
645 | ||
cd0f2d47 MB |
646 | /* Generic check to see if a widget should be powered. |
647 | */ | |
648 | static int dapm_generic_check_power(struct snd_soc_dapm_widget *w) | |
649 | { | |
650 | int in, out; | |
651 | ||
652 | in = is_connected_input_ep(w); | |
ce6120cc | 653 | dapm_clear_walk(w->dapm); |
cd0f2d47 | 654 | out = is_connected_output_ep(w); |
ce6120cc | 655 | dapm_clear_walk(w->dapm); |
cd0f2d47 MB |
656 | return out != 0 && in != 0; |
657 | } | |
658 | ||
6ea31b9f MB |
659 | /* Check to see if an ADC has power */ |
660 | static int dapm_adc_check_power(struct snd_soc_dapm_widget *w) | |
661 | { | |
662 | int in; | |
663 | ||
664 | if (w->active) { | |
665 | in = is_connected_input_ep(w); | |
ce6120cc | 666 | dapm_clear_walk(w->dapm); |
6ea31b9f MB |
667 | return in != 0; |
668 | } else { | |
669 | return dapm_generic_check_power(w); | |
670 | } | |
671 | } | |
672 | ||
673 | /* Check to see if a DAC has power */ | |
674 | static int dapm_dac_check_power(struct snd_soc_dapm_widget *w) | |
675 | { | |
676 | int out; | |
677 | ||
678 | if (w->active) { | |
679 | out = is_connected_output_ep(w); | |
ce6120cc | 680 | dapm_clear_walk(w->dapm); |
6ea31b9f MB |
681 | return out != 0; |
682 | } else { | |
683 | return dapm_generic_check_power(w); | |
684 | } | |
685 | } | |
686 | ||
246d0a17 MB |
687 | /* Check to see if a power supply is needed */ |
688 | static int dapm_supply_check_power(struct snd_soc_dapm_widget *w) | |
689 | { | |
690 | struct snd_soc_dapm_path *path; | |
691 | int power = 0; | |
692 | ||
693 | /* Check if one of our outputs is connected */ | |
694 | list_for_each_entry(path, &w->sinks, list_source) { | |
215edda3 MB |
695 | if (path->connected && |
696 | !path->connected(path->source, path->sink)) | |
697 | continue; | |
698 | ||
246d0a17 MB |
699 | if (path->sink && path->sink->power_check && |
700 | path->sink->power_check(path->sink)) { | |
701 | power = 1; | |
702 | break; | |
703 | } | |
704 | } | |
705 | ||
ce6120cc | 706 | dapm_clear_walk(w->dapm); |
246d0a17 MB |
707 | |
708 | return power; | |
709 | } | |
710 | ||
38357ab2 MB |
711 | static int dapm_seq_compare(struct snd_soc_dapm_widget *a, |
712 | struct snd_soc_dapm_widget *b, | |
713 | int sort[]) | |
42aa3418 | 714 | { |
38357ab2 MB |
715 | if (sort[a->id] != sort[b->id]) |
716 | return sort[a->id] - sort[b->id]; | |
b22ead2a MB |
717 | if (a->reg != b->reg) |
718 | return a->reg - b->reg; | |
84dab567 MB |
719 | if (a->dapm != b->dapm) |
720 | return (unsigned long)a->dapm - (unsigned long)b->dapm; | |
42aa3418 | 721 | |
38357ab2 MB |
722 | return 0; |
723 | } | |
42aa3418 | 724 | |
38357ab2 MB |
725 | /* Insert a widget in order into a DAPM power sequence. */ |
726 | static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget, | |
727 | struct list_head *list, | |
728 | int sort[]) | |
729 | { | |
730 | struct snd_soc_dapm_widget *w; | |
731 | ||
732 | list_for_each_entry(w, list, power_list) | |
733 | if (dapm_seq_compare(new_widget, w, sort) < 0) { | |
734 | list_add_tail(&new_widget->power_list, &w->power_list); | |
735 | return; | |
736 | } | |
737 | ||
738 | list_add_tail(&new_widget->power_list, list); | |
739 | } | |
740 | ||
68f89ad8 MB |
741 | static void dapm_seq_check_event(struct snd_soc_dapm_context *dapm, |
742 | struct snd_soc_dapm_widget *w, int event) | |
743 | { | |
744 | struct snd_soc_card *card = dapm->card; | |
745 | const char *ev_name; | |
746 | int power, ret; | |
747 | ||
748 | switch (event) { | |
749 | case SND_SOC_DAPM_PRE_PMU: | |
750 | ev_name = "PRE_PMU"; | |
751 | power = 1; | |
752 | break; | |
753 | case SND_SOC_DAPM_POST_PMU: | |
754 | ev_name = "POST_PMU"; | |
755 | power = 1; | |
756 | break; | |
757 | case SND_SOC_DAPM_PRE_PMD: | |
758 | ev_name = "PRE_PMD"; | |
759 | power = 0; | |
760 | break; | |
761 | case SND_SOC_DAPM_POST_PMD: | |
762 | ev_name = "POST_PMD"; | |
763 | power = 0; | |
764 | break; | |
765 | default: | |
766 | BUG(); | |
767 | return; | |
768 | } | |
769 | ||
770 | if (w->power != power) | |
771 | return; | |
772 | ||
773 | if (w->event && (w->event_flags & event)) { | |
774 | pop_dbg(dapm->dev, card->pop_time, "pop test : %s %s\n", | |
775 | w->name, ev_name); | |
84e90930 | 776 | trace_snd_soc_dapm_widget_event_start(w, event); |
68f89ad8 | 777 | ret = w->event(w, NULL, event); |
84e90930 | 778 | trace_snd_soc_dapm_widget_event_done(w, event); |
68f89ad8 MB |
779 | if (ret < 0) |
780 | pr_err("%s: %s event failed: %d\n", | |
781 | ev_name, w->name, ret); | |
782 | } | |
783 | } | |
784 | ||
b22ead2a | 785 | /* Apply the coalesced changes from a DAPM sequence */ |
ce6120cc | 786 | static void dapm_seq_run_coalesced(struct snd_soc_dapm_context *dapm, |
b22ead2a | 787 | struct list_head *pending) |
163cac06 | 788 | { |
3a45b867 | 789 | struct snd_soc_card *card = dapm->card; |
68f89ad8 MB |
790 | struct snd_soc_dapm_widget *w; |
791 | int reg, power; | |
b22ead2a MB |
792 | unsigned int value = 0; |
793 | unsigned int mask = 0; | |
794 | unsigned int cur_mask; | |
795 | ||
796 | reg = list_first_entry(pending, struct snd_soc_dapm_widget, | |
797 | power_list)->reg; | |
798 | ||
799 | list_for_each_entry(w, pending, power_list) { | |
800 | cur_mask = 1 << w->shift; | |
801 | BUG_ON(reg != w->reg); | |
802 | ||
803 | if (w->invert) | |
804 | power = !w->power; | |
805 | else | |
806 | power = w->power; | |
807 | ||
808 | mask |= cur_mask; | |
809 | if (power) | |
810 | value |= cur_mask; | |
811 | ||
fd8d3bc0 | 812 | pop_dbg(dapm->dev, card->pop_time, |
b22ead2a MB |
813 | "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n", |
814 | w->name, reg, value, mask); | |
81628103 | 815 | |
68f89ad8 MB |
816 | /* Check for events */ |
817 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMU); | |
818 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMD); | |
81628103 MB |
819 | } |
820 | ||
821 | if (reg >= 0) { | |
fd8d3bc0 | 822 | pop_dbg(dapm->dev, card->pop_time, |
81628103 | 823 | "pop test : Applying 0x%x/0x%x to %x in %dms\n", |
3a45b867 JN |
824 | value, mask, reg, card->pop_time); |
825 | pop_wait(card->pop_time); | |
ce6120cc | 826 | snd_soc_update_bits(dapm->codec, reg, mask, value); |
b22ead2a MB |
827 | } |
828 | ||
81628103 | 829 | list_for_each_entry(w, pending, power_list) { |
68f89ad8 MB |
830 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMU); |
831 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMD); | |
81628103 | 832 | } |
b22ead2a | 833 | } |
42aa3418 | 834 | |
b22ead2a MB |
835 | /* Apply a DAPM power sequence. |
836 | * | |
837 | * We walk over a pre-sorted list of widgets to apply power to. In | |
838 | * order to minimise the number of writes to the device required | |
839 | * multiple widgets will be updated in a single write where possible. | |
840 | * Currently anything that requires more than a single write is not | |
841 | * handled. | |
842 | */ | |
ce6120cc LG |
843 | static void dapm_seq_run(struct snd_soc_dapm_context *dapm, |
844 | struct list_head *list, int event, int sort[]) | |
b22ead2a MB |
845 | { |
846 | struct snd_soc_dapm_widget *w, *n; | |
847 | LIST_HEAD(pending); | |
848 | int cur_sort = -1; | |
849 | int cur_reg = SND_SOC_NOPM; | |
163cac06 MB |
850 | int ret; |
851 | ||
b22ead2a MB |
852 | list_for_each_entry_safe(w, n, list, power_list) { |
853 | ret = 0; | |
854 | ||
855 | /* Do we need to apply any queued changes? */ | |
856 | if (sort[w->id] != cur_sort || w->reg != cur_reg) { | |
857 | if (!list_empty(&pending)) | |
ce6120cc | 858 | dapm_seq_run_coalesced(dapm, &pending); |
b22ead2a MB |
859 | |
860 | INIT_LIST_HEAD(&pending); | |
861 | cur_sort = -1; | |
862 | cur_reg = SND_SOC_NOPM; | |
863 | } | |
864 | ||
163cac06 MB |
865 | switch (w->id) { |
866 | case snd_soc_dapm_pre: | |
867 | if (!w->event) | |
b22ead2a MB |
868 | list_for_each_entry_safe_continue(w, n, list, |
869 | power_list); | |
163cac06 | 870 | |
b22ead2a | 871 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
872 | ret = w->event(w, |
873 | NULL, SND_SOC_DAPM_PRE_PMU); | |
b22ead2a | 874 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
875 | ret = w->event(w, |
876 | NULL, SND_SOC_DAPM_PRE_PMD); | |
163cac06 MB |
877 | break; |
878 | ||
879 | case snd_soc_dapm_post: | |
880 | if (!w->event) | |
b22ead2a MB |
881 | list_for_each_entry_safe_continue(w, n, list, |
882 | power_list); | |
163cac06 | 883 | |
b22ead2a | 884 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
885 | ret = w->event(w, |
886 | NULL, SND_SOC_DAPM_POST_PMU); | |
b22ead2a | 887 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
888 | ret = w->event(w, |
889 | NULL, SND_SOC_DAPM_POST_PMD); | |
163cac06 MB |
890 | break; |
891 | ||
b22ead2a MB |
892 | case snd_soc_dapm_input: |
893 | case snd_soc_dapm_output: | |
894 | case snd_soc_dapm_hp: | |
895 | case snd_soc_dapm_mic: | |
896 | case snd_soc_dapm_line: | |
897 | case snd_soc_dapm_spk: | |
898 | /* No register support currently */ | |
163cac06 | 899 | ret = dapm_generic_apply_power(w); |
163cac06 | 900 | break; |
b22ead2a MB |
901 | |
902 | default: | |
81628103 MB |
903 | /* Queue it up for application */ |
904 | cur_sort = sort[w->id]; | |
905 | cur_reg = w->reg; | |
906 | list_move(&w->power_list, &pending); | |
907 | break; | |
163cac06 | 908 | } |
b22ead2a MB |
909 | |
910 | if (ret < 0) | |
f7d41ae8 JN |
911 | dev_err(w->dapm->dev, |
912 | "Failed to apply widget power: %d\n", ret); | |
6ea31b9f | 913 | } |
b22ead2a MB |
914 | |
915 | if (!list_empty(&pending)) | |
ce6120cc | 916 | dapm_seq_run_coalesced(dapm, &pending); |
42aa3418 MB |
917 | } |
918 | ||
2b97eabc RP |
919 | /* |
920 | * Scan each dapm widget for complete audio path. | |
921 | * A complete path is a route that has valid endpoints i.e.:- | |
922 | * | |
923 | * o DAC to output pin. | |
924 | * o Input Pin to ADC. | |
925 | * o Input pin to Output pin (bypass, sidetone) | |
926 | * o DAC to ADC (loopback). | |
927 | */ | |
ce6120cc | 928 | static int dapm_power_widgets(struct snd_soc_dapm_context *dapm, int event) |
2b97eabc | 929 | { |
ce6120cc | 930 | struct snd_soc_card *card = dapm->codec->card; |
2b97eabc | 931 | struct snd_soc_dapm_widget *w; |
291f3bbc MB |
932 | LIST_HEAD(up_list); |
933 | LIST_HEAD(down_list); | |
6d3ddc81 | 934 | int ret = 0; |
38357ab2 | 935 | int power; |
452c5eaa | 936 | int sys_power = 0; |
6d3ddc81 | 937 | |
84e90930 MB |
938 | trace_snd_soc_dapm_start(card); |
939 | ||
6d3ddc81 MB |
940 | /* Check which widgets we need to power and store them in |
941 | * lists indicating if they should be powered up or down. | |
942 | */ | |
97c866de JN |
943 | list_for_each_entry(w, &card->widgets, list) { |
944 | if (w->dapm != dapm) | |
945 | continue; | |
6d3ddc81 MB |
946 | switch (w->id) { |
947 | case snd_soc_dapm_pre: | |
291f3bbc | 948 | dapm_seq_insert(w, &down_list, dapm_down_seq); |
6d3ddc81 MB |
949 | break; |
950 | case snd_soc_dapm_post: | |
291f3bbc | 951 | dapm_seq_insert(w, &up_list, dapm_up_seq); |
6d3ddc81 MB |
952 | break; |
953 | ||
954 | default: | |
955 | if (!w->power_check) | |
956 | continue; | |
957 | ||
9949788b | 958 | if (!w->force) |
50b6bce5 | 959 | power = w->power_check(w); |
9949788b MB |
960 | else |
961 | power = 1; | |
962 | if (power) | |
963 | sys_power = 1; | |
452c5eaa | 964 | |
6d3ddc81 MB |
965 | if (w->power == power) |
966 | continue; | |
967 | ||
84e90930 MB |
968 | trace_snd_soc_dapm_widget_power(w, power); |
969 | ||
6d3ddc81 | 970 | if (power) |
291f3bbc | 971 | dapm_seq_insert(w, &up_list, dapm_up_seq); |
6d3ddc81 | 972 | else |
291f3bbc | 973 | dapm_seq_insert(w, &down_list, dapm_down_seq); |
6d3ddc81 MB |
974 | |
975 | w->power = power; | |
976 | break; | |
977 | } | |
2b97eabc RP |
978 | } |
979 | ||
b14b76a5 MB |
980 | /* If there are no DAPM widgets then try to figure out power from the |
981 | * event type. | |
982 | */ | |
97c866de | 983 | if (!dapm->n_widgets) { |
b14b76a5 MB |
984 | switch (event) { |
985 | case SND_SOC_DAPM_STREAM_START: | |
986 | case SND_SOC_DAPM_STREAM_RESUME: | |
987 | sys_power = 1; | |
988 | break; | |
862af8ad | 989 | case SND_SOC_DAPM_STREAM_STOP: |
0f0e2528 | 990 | sys_power = !!dapm->codec->active; |
862af8ad | 991 | break; |
50b6bce5 MB |
992 | case SND_SOC_DAPM_STREAM_SUSPEND: |
993 | sys_power = 0; | |
994 | break; | |
b14b76a5 | 995 | case SND_SOC_DAPM_STREAM_NOP: |
ce6120cc | 996 | switch (dapm->bias_level) { |
a96ca338 MB |
997 | case SND_SOC_BIAS_STANDBY: |
998 | case SND_SOC_BIAS_OFF: | |
999 | sys_power = 0; | |
1000 | break; | |
1001 | default: | |
1002 | sys_power = 1; | |
1003 | break; | |
1004 | } | |
50b6bce5 | 1005 | break; |
b14b76a5 MB |
1006 | default: |
1007 | break; | |
1008 | } | |
1009 | } | |
1010 | ||
ce6120cc LG |
1011 | if (sys_power && dapm->bias_level == SND_SOC_BIAS_OFF) { |
1012 | ret = snd_soc_dapm_set_bias_level(card, dapm, | |
a96ca338 MB |
1013 | SND_SOC_BIAS_STANDBY); |
1014 | if (ret != 0) | |
f7d41ae8 JN |
1015 | dev_err(dapm->dev, |
1016 | "Failed to turn on bias: %d\n", ret); | |
a96ca338 MB |
1017 | } |
1018 | ||
452c5eaa | 1019 | /* If we're changing to all on or all off then prepare */ |
ce6120cc LG |
1020 | if ((sys_power && dapm->bias_level == SND_SOC_BIAS_STANDBY) || |
1021 | (!sys_power && dapm->bias_level == SND_SOC_BIAS_ON)) { | |
1022 | ret = snd_soc_dapm_set_bias_level(card, dapm, SND_SOC_BIAS_PREPARE); | |
452c5eaa | 1023 | if (ret != 0) |
f7d41ae8 JN |
1024 | dev_err(dapm->dev, |
1025 | "Failed to prepare bias: %d\n", ret); | |
452c5eaa MB |
1026 | } |
1027 | ||
6d3ddc81 | 1028 | /* Power down widgets first; try to avoid amplifying pops. */ |
ce6120cc | 1029 | dapm_seq_run(dapm, &down_list, event, dapm_down_seq); |
2b97eabc | 1030 | |
6d3ddc81 | 1031 | /* Now power up. */ |
ce6120cc | 1032 | dapm_seq_run(dapm, &up_list, event, dapm_up_seq); |
2b97eabc | 1033 | |
452c5eaa | 1034 | /* If we just powered the last thing off drop to standby bias */ |
ce6120cc LG |
1035 | if (dapm->bias_level == SND_SOC_BIAS_PREPARE && !sys_power) { |
1036 | ret = snd_soc_dapm_set_bias_level(card, dapm, SND_SOC_BIAS_STANDBY); | |
452c5eaa | 1037 | if (ret != 0) |
f7d41ae8 JN |
1038 | dev_err(dapm->dev, |
1039 | "Failed to apply standby bias: %d\n", ret); | |
452c5eaa MB |
1040 | } |
1041 | ||
a96ca338 | 1042 | /* If we're in standby and can support bias off then do that */ |
ce6120cc LG |
1043 | if (dapm->bias_level == SND_SOC_BIAS_STANDBY && |
1044 | dapm->idle_bias_off) { | |
1045 | ret = snd_soc_dapm_set_bias_level(card, dapm, SND_SOC_BIAS_OFF); | |
a96ca338 | 1046 | if (ret != 0) |
f7d41ae8 JN |
1047 | dev_err(dapm->dev, |
1048 | "Failed to turn off bias: %d\n", ret); | |
a96ca338 MB |
1049 | } |
1050 | ||
452c5eaa | 1051 | /* If we just powered up then move to active bias */ |
ce6120cc LG |
1052 | if (dapm->bias_level == SND_SOC_BIAS_PREPARE && sys_power) { |
1053 | ret = snd_soc_dapm_set_bias_level(card, dapm, SND_SOC_BIAS_ON); | |
452c5eaa | 1054 | if (ret != 0) |
f7d41ae8 JN |
1055 | dev_err(dapm->dev, |
1056 | "Failed to apply active bias: %d\n", ret); | |
452c5eaa MB |
1057 | } |
1058 | ||
fd8d3bc0 JN |
1059 | pop_dbg(dapm->dev, card->pop_time, |
1060 | "DAPM sequencing finished, waiting %dms\n", card->pop_time); | |
3a45b867 | 1061 | pop_wait(card->pop_time); |
cb507e7e | 1062 | |
84e90930 MB |
1063 | trace_snd_soc_dapm_done(card); |
1064 | ||
42aa3418 | 1065 | return 0; |
2b97eabc RP |
1066 | } |
1067 | ||
79fb9387 MB |
1068 | #ifdef CONFIG_DEBUG_FS |
1069 | static int dapm_widget_power_open_file(struct inode *inode, struct file *file) | |
1070 | { | |
1071 | file->private_data = inode->i_private; | |
1072 | return 0; | |
1073 | } | |
1074 | ||
1075 | static ssize_t dapm_widget_power_read_file(struct file *file, | |
1076 | char __user *user_buf, | |
1077 | size_t count, loff_t *ppos) | |
1078 | { | |
1079 | struct snd_soc_dapm_widget *w = file->private_data; | |
1080 | char *buf; | |
1081 | int in, out; | |
1082 | ssize_t ret; | |
1083 | struct snd_soc_dapm_path *p = NULL; | |
1084 | ||
1085 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); | |
1086 | if (!buf) | |
1087 | return -ENOMEM; | |
1088 | ||
1089 | in = is_connected_input_ep(w); | |
ce6120cc | 1090 | dapm_clear_walk(w->dapm); |
79fb9387 | 1091 | out = is_connected_output_ep(w); |
ce6120cc | 1092 | dapm_clear_walk(w->dapm); |
79fb9387 | 1093 | |
d033c36a | 1094 | ret = snprintf(buf, PAGE_SIZE, "%s: %s in %d out %d", |
79fb9387 MB |
1095 | w->name, w->power ? "On" : "Off", in, out); |
1096 | ||
d033c36a MB |
1097 | if (w->reg >= 0) |
1098 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
1099 | " - R%d(0x%x) bit %d", | |
1100 | w->reg, w->reg, w->shift); | |
1101 | ||
1102 | ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n"); | |
1103 | ||
3eef08ba MB |
1104 | if (w->sname) |
1105 | ret += snprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n", | |
1106 | w->sname, | |
1107 | w->active ? "active" : "inactive"); | |
79fb9387 MB |
1108 | |
1109 | list_for_each_entry(p, &w->sources, list_sink) { | |
215edda3 MB |
1110 | if (p->connected && !p->connected(w, p->sink)) |
1111 | continue; | |
1112 | ||
79fb9387 MB |
1113 | if (p->connect) |
1114 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
1115 | " in %s %s\n", | |
1116 | p->name ? p->name : "static", | |
1117 | p->source->name); | |
1118 | } | |
1119 | list_for_each_entry(p, &w->sinks, list_source) { | |
215edda3 MB |
1120 | if (p->connected && !p->connected(w, p->sink)) |
1121 | continue; | |
1122 | ||
79fb9387 MB |
1123 | if (p->connect) |
1124 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
1125 | " out %s %s\n", | |
1126 | p->name ? p->name : "static", | |
1127 | p->sink->name); | |
1128 | } | |
1129 | ||
1130 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); | |
1131 | ||
1132 | kfree(buf); | |
1133 | return ret; | |
1134 | } | |
1135 | ||
1136 | static const struct file_operations dapm_widget_power_fops = { | |
1137 | .open = dapm_widget_power_open_file, | |
1138 | .read = dapm_widget_power_read_file, | |
6038f373 | 1139 | .llseek = default_llseek, |
79fb9387 MB |
1140 | }; |
1141 | ||
ce6120cc | 1142 | void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm) |
79fb9387 MB |
1143 | { |
1144 | struct snd_soc_dapm_widget *w; | |
1145 | struct dentry *d; | |
1146 | ||
ce6120cc | 1147 | if (!dapm->debugfs_dapm) |
79fb9387 MB |
1148 | return; |
1149 | ||
97c866de JN |
1150 | list_for_each_entry(w, &dapm->card->widgets, list) { |
1151 | if (!w->name || w->dapm != dapm) | |
79fb9387 MB |
1152 | continue; |
1153 | ||
1154 | d = debugfs_create_file(w->name, 0444, | |
ce6120cc | 1155 | dapm->debugfs_dapm, w, |
79fb9387 MB |
1156 | &dapm_widget_power_fops); |
1157 | if (!d) | |
f7d41ae8 JN |
1158 | dev_warn(w->dapm->dev, |
1159 | "ASoC: Failed to create %s debugfs file\n", | |
1160 | w->name); | |
79fb9387 MB |
1161 | } |
1162 | } | |
1163 | #else | |
ce6120cc | 1164 | void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm) |
79fb9387 MB |
1165 | { |
1166 | } | |
1167 | #endif | |
1168 | ||
2b97eabc | 1169 | /* test and update the power status of a mux widget */ |
d9c96cf3 | 1170 | static int dapm_mux_update_power(struct snd_soc_dapm_widget *widget, |
3a65577d MB |
1171 | struct snd_kcontrol *kcontrol, int change, |
1172 | int mux, struct soc_enum *e) | |
2b97eabc RP |
1173 | { |
1174 | struct snd_soc_dapm_path *path; | |
1175 | int found = 0; | |
1176 | ||
eff317d0 PU |
1177 | if (widget->id != snd_soc_dapm_mux && |
1178 | widget->id != snd_soc_dapm_value_mux) | |
2b97eabc RP |
1179 | return -ENODEV; |
1180 | ||
3a65577d | 1181 | if (!change) |
2b97eabc RP |
1182 | return 0; |
1183 | ||
1184 | /* find dapm widget path assoc with kcontrol */ | |
8ddab3f5 | 1185 | list_for_each_entry(path, &widget->dapm->card->paths, list) { |
2b97eabc RP |
1186 | if (path->kcontrol != kcontrol) |
1187 | continue; | |
1188 | ||
cb01e2b9 | 1189 | if (!path->name || !e->texts[mux]) |
2b97eabc RP |
1190 | continue; |
1191 | ||
1192 | found = 1; | |
1193 | /* we now need to match the string in the enum to the path */ | |
cb01e2b9 | 1194 | if (!(strcmp(path->name, e->texts[mux]))) |
2b97eabc RP |
1195 | path->connect = 1; /* new connection */ |
1196 | else | |
1197 | path->connect = 0; /* old connection must be powered down */ | |
1198 | } | |
1199 | ||
b91b8fa0 | 1200 | if (found) |
ce6120cc | 1201 | dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc RP |
1202 | |
1203 | return 0; | |
1204 | } | |
2b97eabc | 1205 | |
1b075e3f | 1206 | /* test and update the power status of a mixer or switch widget */ |
d9c96cf3 | 1207 | static int dapm_mixer_update_power(struct snd_soc_dapm_widget *widget, |
283375ce | 1208 | struct snd_kcontrol *kcontrol, int connect) |
2b97eabc RP |
1209 | { |
1210 | struct snd_soc_dapm_path *path; | |
1211 | int found = 0; | |
1212 | ||
1b075e3f | 1213 | if (widget->id != snd_soc_dapm_mixer && |
ca9c1aae | 1214 | widget->id != snd_soc_dapm_mixer_named_ctl && |
1b075e3f | 1215 | widget->id != snd_soc_dapm_switch) |
2b97eabc RP |
1216 | return -ENODEV; |
1217 | ||
2b97eabc | 1218 | /* find dapm widget path assoc with kcontrol */ |
8ddab3f5 | 1219 | list_for_each_entry(path, &widget->dapm->card->paths, list) { |
2b97eabc RP |
1220 | if (path->kcontrol != kcontrol) |
1221 | continue; | |
1222 | ||
1223 | /* found, now check type */ | |
1224 | found = 1; | |
283375ce | 1225 | path->connect = connect; |
2b97eabc RP |
1226 | break; |
1227 | } | |
1228 | ||
b91b8fa0 | 1229 | if (found) |
ce6120cc | 1230 | dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc RP |
1231 | |
1232 | return 0; | |
1233 | } | |
2b97eabc RP |
1234 | |
1235 | /* show dapm widget status in sys fs */ | |
1236 | static ssize_t dapm_widget_show(struct device *dev, | |
1237 | struct device_attribute *attr, char *buf) | |
1238 | { | |
f0fba2ad LG |
1239 | struct snd_soc_pcm_runtime *rtd = |
1240 | container_of(dev, struct snd_soc_pcm_runtime, dev); | |
1241 | struct snd_soc_codec *codec =rtd->codec; | |
2b97eabc RP |
1242 | struct snd_soc_dapm_widget *w; |
1243 | int count = 0; | |
1244 | char *state = "not set"; | |
1245 | ||
97c866de JN |
1246 | list_for_each_entry(w, &codec->card->widgets, list) { |
1247 | if (w->dapm != &codec->dapm) | |
1248 | continue; | |
2b97eabc RP |
1249 | |
1250 | /* only display widgets that burnm power */ | |
1251 | switch (w->id) { | |
1252 | case snd_soc_dapm_hp: | |
1253 | case snd_soc_dapm_mic: | |
1254 | case snd_soc_dapm_spk: | |
1255 | case snd_soc_dapm_line: | |
1256 | case snd_soc_dapm_micbias: | |
1257 | case snd_soc_dapm_dac: | |
1258 | case snd_soc_dapm_adc: | |
1259 | case snd_soc_dapm_pga: | |
d88429a6 | 1260 | case snd_soc_dapm_out_drv: |
2b97eabc | 1261 | case snd_soc_dapm_mixer: |
ca9c1aae | 1262 | case snd_soc_dapm_mixer_named_ctl: |
246d0a17 | 1263 | case snd_soc_dapm_supply: |
2b97eabc RP |
1264 | if (w->name) |
1265 | count += sprintf(buf + count, "%s: %s\n", | |
1266 | w->name, w->power ? "On":"Off"); | |
1267 | break; | |
1268 | default: | |
1269 | break; | |
1270 | } | |
1271 | } | |
1272 | ||
ce6120cc | 1273 | switch (codec->dapm.bias_level) { |
0be9898a MB |
1274 | case SND_SOC_BIAS_ON: |
1275 | state = "On"; | |
2b97eabc | 1276 | break; |
0be9898a MB |
1277 | case SND_SOC_BIAS_PREPARE: |
1278 | state = "Prepare"; | |
2b97eabc | 1279 | break; |
0be9898a MB |
1280 | case SND_SOC_BIAS_STANDBY: |
1281 | state = "Standby"; | |
2b97eabc | 1282 | break; |
0be9898a MB |
1283 | case SND_SOC_BIAS_OFF: |
1284 | state = "Off"; | |
2b97eabc RP |
1285 | break; |
1286 | } | |
1287 | count += sprintf(buf + count, "PM State: %s\n", state); | |
1288 | ||
1289 | return count; | |
1290 | } | |
1291 | ||
1292 | static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL); | |
1293 | ||
1294 | int snd_soc_dapm_sys_add(struct device *dev) | |
1295 | { | |
12ef193d | 1296 | return device_create_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1297 | } |
1298 | ||
1299 | static void snd_soc_dapm_sys_remove(struct device *dev) | |
1300 | { | |
aef90843 | 1301 | device_remove_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1302 | } |
1303 | ||
1304 | /* free all dapm widgets and resources */ | |
ce6120cc | 1305 | static void dapm_free_widgets(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
1306 | { |
1307 | struct snd_soc_dapm_widget *w, *next_w; | |
1308 | struct snd_soc_dapm_path *p, *next_p; | |
1309 | ||
97c866de JN |
1310 | list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) { |
1311 | if (w->dapm != dapm) | |
1312 | continue; | |
2b97eabc | 1313 | list_del(&w->list); |
8ddab3f5 JN |
1314 | /* |
1315 | * remove source and sink paths associated to this widget. | |
1316 | * While removing the path, remove reference to it from both | |
1317 | * source and sink widgets so that path is removed only once. | |
1318 | */ | |
1319 | list_for_each_entry_safe(p, next_p, &w->sources, list_sink) { | |
1320 | list_del(&p->list_sink); | |
1321 | list_del(&p->list_source); | |
1322 | list_del(&p->list); | |
1323 | kfree(p->long_name); | |
1324 | kfree(p); | |
1325 | } | |
1326 | list_for_each_entry_safe(p, next_p, &w->sinks, list_source) { | |
1327 | list_del(&p->list_sink); | |
1328 | list_del(&p->list_source); | |
1329 | list_del(&p->list); | |
1330 | kfree(p->long_name); | |
1331 | kfree(p); | |
1332 | } | |
ead9b919 | 1333 | kfree(w->name); |
2b97eabc RP |
1334 | kfree(w); |
1335 | } | |
2b97eabc RP |
1336 | } |
1337 | ||
ce6120cc | 1338 | static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm, |
1649923d | 1339 | const char *pin, int status) |
a5302181 LG |
1340 | { |
1341 | struct snd_soc_dapm_widget *w; | |
1342 | ||
97c866de JN |
1343 | list_for_each_entry(w, &dapm->card->widgets, list) { |
1344 | if (w->dapm != dapm) | |
1345 | continue; | |
a5302181 | 1346 | if (!strcmp(w->name, pin)) { |
f7d41ae8 JN |
1347 | dev_dbg(w->dapm->dev, "dapm: pin %s = %d\n", |
1348 | pin, status); | |
a5302181 | 1349 | w->connected = status; |
5b9e87cc MB |
1350 | /* Allow disabling of forced pins */ |
1351 | if (status == 0) | |
1352 | w->force = 0; | |
a5302181 LG |
1353 | return 0; |
1354 | } | |
1355 | } | |
1356 | ||
f7d41ae8 | 1357 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); |
a5302181 LG |
1358 | return -EINVAL; |
1359 | } | |
1360 | ||
2b97eabc | 1361 | /** |
a5302181 | 1362 | * snd_soc_dapm_sync - scan and power dapm paths |
ce6120cc | 1363 | * @dapm: DAPM context |
2b97eabc RP |
1364 | * |
1365 | * Walks all dapm audio paths and powers widgets according to their | |
1366 | * stream or path usage. | |
1367 | * | |
1368 | * Returns 0 for success. | |
1369 | */ | |
ce6120cc | 1370 | int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm) |
2b97eabc | 1371 | { |
ce6120cc | 1372 | return dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc | 1373 | } |
a5302181 | 1374 | EXPORT_SYMBOL_GPL(snd_soc_dapm_sync); |
2b97eabc | 1375 | |
ce6120cc | 1376 | static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm, |
215edda3 | 1377 | const struct snd_soc_dapm_route *route) |
2b97eabc RP |
1378 | { |
1379 | struct snd_soc_dapm_path *path; | |
1380 | struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w; | |
97c866de | 1381 | struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL; |
ead9b919 | 1382 | const char *sink; |
215edda3 | 1383 | const char *control = route->control; |
ead9b919 JN |
1384 | const char *source; |
1385 | char prefixed_sink[80]; | |
1386 | char prefixed_source[80]; | |
2b97eabc RP |
1387 | int ret = 0; |
1388 | ||
ead9b919 JN |
1389 | if (dapm->codec->name_prefix) { |
1390 | snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s", | |
1391 | dapm->codec->name_prefix, route->sink); | |
1392 | sink = prefixed_sink; | |
1393 | snprintf(prefixed_source, sizeof(prefixed_source), "%s %s", | |
1394 | dapm->codec->name_prefix, route->source); | |
1395 | source = prefixed_source; | |
1396 | } else { | |
1397 | sink = route->sink; | |
1398 | source = route->source; | |
1399 | } | |
1400 | ||
97c866de JN |
1401 | /* |
1402 | * find src and dest widgets over all widgets but favor a widget from | |
1403 | * current DAPM context | |
1404 | */ | |
1405 | list_for_each_entry(w, &dapm->card->widgets, list) { | |
2b97eabc | 1406 | if (!wsink && !(strcmp(w->name, sink))) { |
97c866de JN |
1407 | wtsink = w; |
1408 | if (w->dapm == dapm) | |
1409 | wsink = w; | |
2b97eabc RP |
1410 | continue; |
1411 | } | |
1412 | if (!wsource && !(strcmp(w->name, source))) { | |
97c866de JN |
1413 | wtsource = w; |
1414 | if (w->dapm == dapm) | |
1415 | wsource = w; | |
2b97eabc RP |
1416 | } |
1417 | } | |
97c866de JN |
1418 | /* use widget from another DAPM context if not found from this */ |
1419 | if (!wsink) | |
1420 | wsink = wtsink; | |
1421 | if (!wsource) | |
1422 | wsource = wtsource; | |
2b97eabc RP |
1423 | |
1424 | if (wsource == NULL || wsink == NULL) | |
1425 | return -ENODEV; | |
1426 | ||
1427 | path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL); | |
1428 | if (!path) | |
1429 | return -ENOMEM; | |
1430 | ||
1431 | path->source = wsource; | |
1432 | path->sink = wsink; | |
215edda3 | 1433 | path->connected = route->connected; |
2b97eabc RP |
1434 | INIT_LIST_HEAD(&path->list); |
1435 | INIT_LIST_HEAD(&path->list_source); | |
1436 | INIT_LIST_HEAD(&path->list_sink); | |
1437 | ||
1438 | /* check for external widgets */ | |
1439 | if (wsink->id == snd_soc_dapm_input) { | |
1440 | if (wsource->id == snd_soc_dapm_micbias || | |
1441 | wsource->id == snd_soc_dapm_mic || | |
087d53ab RC |
1442 | wsource->id == snd_soc_dapm_line || |
1443 | wsource->id == snd_soc_dapm_output) | |
2b97eabc RP |
1444 | wsink->ext = 1; |
1445 | } | |
1446 | if (wsource->id == snd_soc_dapm_output) { | |
1447 | if (wsink->id == snd_soc_dapm_spk || | |
1448 | wsink->id == snd_soc_dapm_hp || | |
1e39221e SF |
1449 | wsink->id == snd_soc_dapm_line || |
1450 | wsink->id == snd_soc_dapm_input) | |
2b97eabc RP |
1451 | wsource->ext = 1; |
1452 | } | |
1453 | ||
1454 | /* connect static paths */ | |
1455 | if (control == NULL) { | |
8ddab3f5 | 1456 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
1457 | list_add(&path->list_sink, &wsink->sources); |
1458 | list_add(&path->list_source, &wsource->sinks); | |
1459 | path->connect = 1; | |
1460 | return 0; | |
1461 | } | |
1462 | ||
1463 | /* connect dynamic paths */ | |
1464 | switch(wsink->id) { | |
1465 | case snd_soc_dapm_adc: | |
1466 | case snd_soc_dapm_dac: | |
1467 | case snd_soc_dapm_pga: | |
d88429a6 | 1468 | case snd_soc_dapm_out_drv: |
2b97eabc RP |
1469 | case snd_soc_dapm_input: |
1470 | case snd_soc_dapm_output: | |
1471 | case snd_soc_dapm_micbias: | |
1472 | case snd_soc_dapm_vmid: | |
1473 | case snd_soc_dapm_pre: | |
1474 | case snd_soc_dapm_post: | |
246d0a17 | 1475 | case snd_soc_dapm_supply: |
010ff262 MB |
1476 | case snd_soc_dapm_aif_in: |
1477 | case snd_soc_dapm_aif_out: | |
8ddab3f5 | 1478 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
1479 | list_add(&path->list_sink, &wsink->sources); |
1480 | list_add(&path->list_source, &wsource->sinks); | |
1481 | path->connect = 1; | |
1482 | return 0; | |
1483 | case snd_soc_dapm_mux: | |
74155556 | 1484 | case snd_soc_dapm_value_mux: |
ce6120cc | 1485 | ret = dapm_connect_mux(dapm, wsource, wsink, path, control, |
2b97eabc RP |
1486 | &wsink->kcontrols[0]); |
1487 | if (ret != 0) | |
1488 | goto err; | |
1489 | break; | |
1490 | case snd_soc_dapm_switch: | |
1491 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1492 | case snd_soc_dapm_mixer_named_ctl: |
ce6120cc | 1493 | ret = dapm_connect_mixer(dapm, wsource, wsink, path, control); |
2b97eabc RP |
1494 | if (ret != 0) |
1495 | goto err; | |
1496 | break; | |
1497 | case snd_soc_dapm_hp: | |
1498 | case snd_soc_dapm_mic: | |
1499 | case snd_soc_dapm_line: | |
1500 | case snd_soc_dapm_spk: | |
8ddab3f5 | 1501 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
1502 | list_add(&path->list_sink, &wsink->sources); |
1503 | list_add(&path->list_source, &wsource->sinks); | |
1504 | path->connect = 0; | |
1505 | return 0; | |
1506 | } | |
1507 | return 0; | |
1508 | ||
1509 | err: | |
f7d41ae8 JN |
1510 | dev_warn(dapm->dev, "asoc: no dapm match for %s --> %s --> %s\n", |
1511 | source, control, sink); | |
2b97eabc RP |
1512 | kfree(path); |
1513 | return ret; | |
1514 | } | |
105f1c28 | 1515 | |
105f1c28 MB |
1516 | /** |
1517 | * snd_soc_dapm_add_routes - Add routes between DAPM widgets | |
ce6120cc | 1518 | * @dapm: DAPM context |
105f1c28 MB |
1519 | * @route: audio routes |
1520 | * @num: number of routes | |
1521 | * | |
1522 | * Connects 2 dapm widgets together via a named audio path. The sink is | |
1523 | * the widget receiving the audio signal, whilst the source is the sender | |
1524 | * of the audio signal. | |
1525 | * | |
1526 | * Returns 0 for success else error. On error all resources can be freed | |
1527 | * with a call to snd_soc_card_free(). | |
1528 | */ | |
ce6120cc | 1529 | int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm, |
105f1c28 MB |
1530 | const struct snd_soc_dapm_route *route, int num) |
1531 | { | |
1532 | int i, ret; | |
1533 | ||
1534 | for (i = 0; i < num; i++) { | |
ce6120cc | 1535 | ret = snd_soc_dapm_add_route(dapm, route); |
105f1c28 | 1536 | if (ret < 0) { |
f7d41ae8 JN |
1537 | dev_err(dapm->dev, "Failed to add route %s->%s\n", |
1538 | route->source, route->sink); | |
105f1c28 MB |
1539 | return ret; |
1540 | } | |
1541 | route++; | |
1542 | } | |
1543 | ||
1544 | return 0; | |
1545 | } | |
1546 | EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes); | |
1547 | ||
2b97eabc RP |
1548 | /** |
1549 | * snd_soc_dapm_new_widgets - add new dapm widgets | |
ce6120cc | 1550 | * @dapm: DAPM context |
2b97eabc RP |
1551 | * |
1552 | * Checks the codec for any new dapm widgets and creates them if found. | |
1553 | * | |
1554 | * Returns 0 for success. | |
1555 | */ | |
ce6120cc | 1556 | int snd_soc_dapm_new_widgets(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
1557 | { |
1558 | struct snd_soc_dapm_widget *w; | |
1559 | ||
97c866de | 1560 | list_for_each_entry(w, &dapm->card->widgets, list) |
2b97eabc RP |
1561 | { |
1562 | if (w->new) | |
1563 | continue; | |
1564 | ||
1565 | switch(w->id) { | |
1566 | case snd_soc_dapm_switch: | |
1567 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1568 | case snd_soc_dapm_mixer_named_ctl: |
b75576d7 | 1569 | w->power_check = dapm_generic_check_power; |
ce6120cc | 1570 | dapm_new_mixer(dapm, w); |
2b97eabc RP |
1571 | break; |
1572 | case snd_soc_dapm_mux: | |
2e72f8e3 | 1573 | case snd_soc_dapm_value_mux: |
b75576d7 | 1574 | w->power_check = dapm_generic_check_power; |
ce6120cc | 1575 | dapm_new_mux(dapm, w); |
2b97eabc RP |
1576 | break; |
1577 | case snd_soc_dapm_adc: | |
010ff262 | 1578 | case snd_soc_dapm_aif_out: |
b75576d7 MB |
1579 | w->power_check = dapm_adc_check_power; |
1580 | break; | |
2b97eabc | 1581 | case snd_soc_dapm_dac: |
010ff262 | 1582 | case snd_soc_dapm_aif_in: |
b75576d7 MB |
1583 | w->power_check = dapm_dac_check_power; |
1584 | break; | |
2b97eabc | 1585 | case snd_soc_dapm_pga: |
d88429a6 | 1586 | case snd_soc_dapm_out_drv: |
b75576d7 | 1587 | w->power_check = dapm_generic_check_power; |
ce6120cc | 1588 | dapm_new_pga(dapm, w); |
2b97eabc RP |
1589 | break; |
1590 | case snd_soc_dapm_input: | |
1591 | case snd_soc_dapm_output: | |
1592 | case snd_soc_dapm_micbias: | |
1593 | case snd_soc_dapm_spk: | |
1594 | case snd_soc_dapm_hp: | |
1595 | case snd_soc_dapm_mic: | |
1596 | case snd_soc_dapm_line: | |
b75576d7 MB |
1597 | w->power_check = dapm_generic_check_power; |
1598 | break; | |
246d0a17 MB |
1599 | case snd_soc_dapm_supply: |
1600 | w->power_check = dapm_supply_check_power; | |
2b97eabc RP |
1601 | case snd_soc_dapm_vmid: |
1602 | case snd_soc_dapm_pre: | |
1603 | case snd_soc_dapm_post: | |
1604 | break; | |
1605 | } | |
1606 | w->new = 1; | |
1607 | } | |
1608 | ||
ce6120cc | 1609 | dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc RP |
1610 | return 0; |
1611 | } | |
1612 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets); | |
1613 | ||
1614 | /** | |
1615 | * snd_soc_dapm_get_volsw - dapm mixer get callback | |
1616 | * @kcontrol: mixer control | |
ac11a2b3 | 1617 | * @ucontrol: control element information |
2b97eabc RP |
1618 | * |
1619 | * Callback to get the value of a dapm mixer control. | |
1620 | * | |
1621 | * Returns 0 for success. | |
1622 | */ | |
1623 | int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol, | |
1624 | struct snd_ctl_elem_value *ucontrol) | |
1625 | { | |
1626 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
4eaa9819 JS |
1627 | struct soc_mixer_control *mc = |
1628 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
1629 | unsigned int reg = mc->reg; |
1630 | unsigned int shift = mc->shift; | |
1631 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1632 | int max = mc->max; |
815ecf8d JS |
1633 | unsigned int invert = mc->invert; |
1634 | unsigned int mask = (1 << fls(max)) - 1; | |
2b97eabc | 1635 | |
2b97eabc RP |
1636 | ucontrol->value.integer.value[0] = |
1637 | (snd_soc_read(widget->codec, reg) >> shift) & mask; | |
1638 | if (shift != rshift) | |
1639 | ucontrol->value.integer.value[1] = | |
1640 | (snd_soc_read(widget->codec, reg) >> rshift) & mask; | |
1641 | if (invert) { | |
1642 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1643 | max - ucontrol->value.integer.value[0]; |
2b97eabc RP |
1644 | if (shift != rshift) |
1645 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 1646 | max - ucontrol->value.integer.value[1]; |
2b97eabc RP |
1647 | } |
1648 | ||
1649 | return 0; | |
1650 | } | |
1651 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw); | |
1652 | ||
1653 | /** | |
1654 | * snd_soc_dapm_put_volsw - dapm mixer set callback | |
1655 | * @kcontrol: mixer control | |
ac11a2b3 | 1656 | * @ucontrol: control element information |
2b97eabc RP |
1657 | * |
1658 | * Callback to set the value of a dapm mixer control. | |
1659 | * | |
1660 | * Returns 0 for success. | |
1661 | */ | |
1662 | int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, | |
1663 | struct snd_ctl_elem_value *ucontrol) | |
1664 | { | |
1665 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
4eaa9819 JS |
1666 | struct soc_mixer_control *mc = |
1667 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
1668 | unsigned int reg = mc->reg; |
1669 | unsigned int shift = mc->shift; | |
1670 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1671 | int max = mc->max; |
815ecf8d JS |
1672 | unsigned int mask = (1 << fls(max)) - 1; |
1673 | unsigned int invert = mc->invert; | |
46f5822f | 1674 | unsigned int val, val2, val_mask; |
283375ce | 1675 | int connect; |
2b97eabc RP |
1676 | int ret; |
1677 | ||
1678 | val = (ucontrol->value.integer.value[0] & mask); | |
1679 | ||
1680 | if (invert) | |
a7a4ac86 | 1681 | val = max - val; |
2b97eabc RP |
1682 | val_mask = mask << shift; |
1683 | val = val << shift; | |
1684 | if (shift != rshift) { | |
1685 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1686 | if (invert) | |
a7a4ac86 | 1687 | val2 = max - val2; |
2b97eabc RP |
1688 | val_mask |= mask << rshift; |
1689 | val |= val2 << rshift; | |
1690 | } | |
1691 | ||
1692 | mutex_lock(&widget->codec->mutex); | |
1693 | widget->value = val; | |
1694 | ||
283375ce MB |
1695 | if (snd_soc_test_bits(widget->codec, reg, val_mask, val)) { |
1696 | if (val) | |
1697 | /* new connection */ | |
1698 | connect = invert ? 0:1; | |
1699 | else | |
1700 | /* old connection must be powered down */ | |
1701 | connect = invert ? 1:0; | |
1702 | ||
1703 | dapm_mixer_update_power(widget, kcontrol, connect); | |
1704 | } | |
1705 | ||
2b97eabc RP |
1706 | if (widget->event) { |
1707 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
9af6d956 LG |
1708 | ret = widget->event(widget, kcontrol, |
1709 | SND_SOC_DAPM_PRE_REG); | |
1710 | if (ret < 0) { | |
1711 | ret = 1; | |
2b97eabc | 1712 | goto out; |
9af6d956 | 1713 | } |
2b97eabc RP |
1714 | } |
1715 | ret = snd_soc_update_bits(widget->codec, reg, val_mask, val); | |
1716 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
9af6d956 LG |
1717 | ret = widget->event(widget, kcontrol, |
1718 | SND_SOC_DAPM_POST_REG); | |
2b97eabc RP |
1719 | } else |
1720 | ret = snd_soc_update_bits(widget->codec, reg, val_mask, val); | |
1721 | ||
1722 | out: | |
1723 | mutex_unlock(&widget->codec->mutex); | |
1724 | return ret; | |
1725 | } | |
1726 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw); | |
1727 | ||
1728 | /** | |
1729 | * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback | |
1730 | * @kcontrol: mixer control | |
ac11a2b3 | 1731 | * @ucontrol: control element information |
2b97eabc RP |
1732 | * |
1733 | * Callback to get the value of a dapm enumerated double mixer control. | |
1734 | * | |
1735 | * Returns 0 for success. | |
1736 | */ | |
1737 | int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol, | |
1738 | struct snd_ctl_elem_value *ucontrol) | |
1739 | { | |
1740 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1741 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
46f5822f | 1742 | unsigned int val, bitmask; |
2b97eabc | 1743 | |
f8ba0b7b | 1744 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
1745 | ; |
1746 | val = snd_soc_read(widget->codec, e->reg); | |
1747 | ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1); | |
1748 | if (e->shift_l != e->shift_r) | |
1749 | ucontrol->value.enumerated.item[1] = | |
1750 | (val >> e->shift_r) & (bitmask - 1); | |
1751 | ||
1752 | return 0; | |
1753 | } | |
1754 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double); | |
1755 | ||
1756 | /** | |
1757 | * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback | |
1758 | * @kcontrol: mixer control | |
ac11a2b3 | 1759 | * @ucontrol: control element information |
2b97eabc RP |
1760 | * |
1761 | * Callback to set the value of a dapm enumerated double mixer control. | |
1762 | * | |
1763 | * Returns 0 for success. | |
1764 | */ | |
1765 | int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, | |
1766 | struct snd_ctl_elem_value *ucontrol) | |
1767 | { | |
1768 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1769 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
3a65577d | 1770 | unsigned int val, mux, change; |
46f5822f | 1771 | unsigned int mask, bitmask; |
2b97eabc RP |
1772 | int ret = 0; |
1773 | ||
f8ba0b7b | 1774 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc | 1775 | ; |
f8ba0b7b | 1776 | if (ucontrol->value.enumerated.item[0] > e->max - 1) |
2b97eabc RP |
1777 | return -EINVAL; |
1778 | mux = ucontrol->value.enumerated.item[0]; | |
1779 | val = mux << e->shift_l; | |
1780 | mask = (bitmask - 1) << e->shift_l; | |
1781 | if (e->shift_l != e->shift_r) { | |
f8ba0b7b | 1782 | if (ucontrol->value.enumerated.item[1] > e->max - 1) |
2b97eabc RP |
1783 | return -EINVAL; |
1784 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
1785 | mask |= (bitmask - 1) << e->shift_r; | |
1786 | } | |
1787 | ||
1788 | mutex_lock(&widget->codec->mutex); | |
1789 | widget->value = val; | |
3a65577d MB |
1790 | change = snd_soc_test_bits(widget->codec, e->reg, mask, val); |
1791 | dapm_mux_update_power(widget, kcontrol, change, mux, e); | |
1642e3d4 MB |
1792 | |
1793 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
1794 | ret = widget->event(widget, | |
1795 | kcontrol, SND_SOC_DAPM_PRE_REG); | |
1796 | if (ret < 0) | |
1797 | goto out; | |
1798 | } | |
1799 | ||
1800 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1801 | ||
1802 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
1803 | ret = widget->event(widget, | |
1804 | kcontrol, SND_SOC_DAPM_POST_REG); | |
2b97eabc RP |
1805 | |
1806 | out: | |
1807 | mutex_unlock(&widget->codec->mutex); | |
1808 | return ret; | |
1809 | } | |
1810 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double); | |
1811 | ||
d2b247a8 MB |
1812 | /** |
1813 | * snd_soc_dapm_get_enum_virt - Get virtual DAPM mux | |
1814 | * @kcontrol: mixer control | |
1815 | * @ucontrol: control element information | |
1816 | * | |
1817 | * Returns 0 for success. | |
1818 | */ | |
1819 | int snd_soc_dapm_get_enum_virt(struct snd_kcontrol *kcontrol, | |
1820 | struct snd_ctl_elem_value *ucontrol) | |
1821 | { | |
1822 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1823 | ||
1824 | ucontrol->value.enumerated.item[0] = widget->value; | |
1825 | ||
1826 | return 0; | |
1827 | } | |
1828 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_virt); | |
1829 | ||
1830 | /** | |
1831 | * snd_soc_dapm_put_enum_virt - Set virtual DAPM mux | |
1832 | * @kcontrol: mixer control | |
1833 | * @ucontrol: control element information | |
1834 | * | |
1835 | * Returns 0 for success. | |
1836 | */ | |
1837 | int snd_soc_dapm_put_enum_virt(struct snd_kcontrol *kcontrol, | |
1838 | struct snd_ctl_elem_value *ucontrol) | |
1839 | { | |
1840 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1841 | struct soc_enum *e = | |
1842 | (struct soc_enum *)kcontrol->private_value; | |
1843 | int change; | |
1844 | int ret = 0; | |
1845 | ||
1846 | if (ucontrol->value.enumerated.item[0] >= e->max) | |
1847 | return -EINVAL; | |
1848 | ||
1849 | mutex_lock(&widget->codec->mutex); | |
1850 | ||
1851 | change = widget->value != ucontrol->value.enumerated.item[0]; | |
1852 | widget->value = ucontrol->value.enumerated.item[0]; | |
1853 | dapm_mux_update_power(widget, kcontrol, change, widget->value, e); | |
1854 | ||
1855 | mutex_unlock(&widget->codec->mutex); | |
1856 | return ret; | |
1857 | } | |
1858 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt); | |
1859 | ||
2e72f8e3 PU |
1860 | /** |
1861 | * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get | |
1862 | * callback | |
1863 | * @kcontrol: mixer control | |
1864 | * @ucontrol: control element information | |
1865 | * | |
1866 | * Callback to get the value of a dapm semi enumerated double mixer control. | |
1867 | * | |
1868 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
1869 | * used for handling bitfield coded enumeration for example. | |
1870 | * | |
1871 | * Returns 0 for success. | |
1872 | */ | |
1873 | int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol *kcontrol, | |
1874 | struct snd_ctl_elem_value *ucontrol) | |
1875 | { | |
1876 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
74155556 | 1877 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f | 1878 | unsigned int reg_val, val, mux; |
2e72f8e3 PU |
1879 | |
1880 | reg_val = snd_soc_read(widget->codec, e->reg); | |
1881 | val = (reg_val >> e->shift_l) & e->mask; | |
1882 | for (mux = 0; mux < e->max; mux++) { | |
1883 | if (val == e->values[mux]) | |
1884 | break; | |
1885 | } | |
1886 | ucontrol->value.enumerated.item[0] = mux; | |
1887 | if (e->shift_l != e->shift_r) { | |
1888 | val = (reg_val >> e->shift_r) & e->mask; | |
1889 | for (mux = 0; mux < e->max; mux++) { | |
1890 | if (val == e->values[mux]) | |
1891 | break; | |
1892 | } | |
1893 | ucontrol->value.enumerated.item[1] = mux; | |
1894 | } | |
1895 | ||
1896 | return 0; | |
1897 | } | |
1898 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double); | |
1899 | ||
1900 | /** | |
1901 | * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set | |
1902 | * callback | |
1903 | * @kcontrol: mixer control | |
1904 | * @ucontrol: control element information | |
1905 | * | |
1906 | * Callback to set the value of a dapm semi enumerated double mixer control. | |
1907 | * | |
1908 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
1909 | * used for handling bitfield coded enumeration for example. | |
1910 | * | |
1911 | * Returns 0 for success. | |
1912 | */ | |
1913 | int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol, | |
1914 | struct snd_ctl_elem_value *ucontrol) | |
1915 | { | |
1916 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
74155556 | 1917 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
3a65577d | 1918 | unsigned int val, mux, change; |
46f5822f | 1919 | unsigned int mask; |
2e72f8e3 PU |
1920 | int ret = 0; |
1921 | ||
1922 | if (ucontrol->value.enumerated.item[0] > e->max - 1) | |
1923 | return -EINVAL; | |
1924 | mux = ucontrol->value.enumerated.item[0]; | |
1925 | val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l; | |
1926 | mask = e->mask << e->shift_l; | |
1927 | if (e->shift_l != e->shift_r) { | |
1928 | if (ucontrol->value.enumerated.item[1] > e->max - 1) | |
1929 | return -EINVAL; | |
1930 | val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r; | |
1931 | mask |= e->mask << e->shift_r; | |
1932 | } | |
1933 | ||
1934 | mutex_lock(&widget->codec->mutex); | |
1935 | widget->value = val; | |
3a65577d MB |
1936 | change = snd_soc_test_bits(widget->codec, e->reg, mask, val); |
1937 | dapm_mux_update_power(widget, kcontrol, change, mux, e); | |
1642e3d4 MB |
1938 | |
1939 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
1940 | ret = widget->event(widget, | |
1941 | kcontrol, SND_SOC_DAPM_PRE_REG); | |
1942 | if (ret < 0) | |
1943 | goto out; | |
1944 | } | |
1945 | ||
1946 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1947 | ||
1948 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
1949 | ret = widget->event(widget, | |
1950 | kcontrol, SND_SOC_DAPM_POST_REG); | |
2e72f8e3 PU |
1951 | |
1952 | out: | |
1953 | mutex_unlock(&widget->codec->mutex); | |
1954 | return ret; | |
1955 | } | |
1956 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double); | |
1957 | ||
8b37dbd2 MB |
1958 | /** |
1959 | * snd_soc_dapm_info_pin_switch - Info for a pin switch | |
1960 | * | |
1961 | * @kcontrol: mixer control | |
1962 | * @uinfo: control element information | |
1963 | * | |
1964 | * Callback to provide information about a pin switch control. | |
1965 | */ | |
1966 | int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol, | |
1967 | struct snd_ctl_elem_info *uinfo) | |
1968 | { | |
1969 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1970 | uinfo->count = 1; | |
1971 | uinfo->value.integer.min = 0; | |
1972 | uinfo->value.integer.max = 1; | |
1973 | ||
1974 | return 0; | |
1975 | } | |
1976 | EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch); | |
1977 | ||
1978 | /** | |
1979 | * snd_soc_dapm_get_pin_switch - Get information for a pin switch | |
1980 | * | |
1981 | * @kcontrol: mixer control | |
1982 | * @ucontrol: Value | |
1983 | */ | |
1984 | int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol, | |
1985 | struct snd_ctl_elem_value *ucontrol) | |
1986 | { | |
1987 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1988 | const char *pin = (const char *)kcontrol->private_value; | |
1989 | ||
1990 | mutex_lock(&codec->mutex); | |
1991 | ||
1992 | ucontrol->value.integer.value[0] = | |
ce6120cc | 1993 | snd_soc_dapm_get_pin_status(&codec->dapm, pin); |
8b37dbd2 MB |
1994 | |
1995 | mutex_unlock(&codec->mutex); | |
1996 | ||
1997 | return 0; | |
1998 | } | |
1999 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch); | |
2000 | ||
2001 | /** | |
2002 | * snd_soc_dapm_put_pin_switch - Set information for a pin switch | |
2003 | * | |
2004 | * @kcontrol: mixer control | |
2005 | * @ucontrol: Value | |
2006 | */ | |
2007 | int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol, | |
2008 | struct snd_ctl_elem_value *ucontrol) | |
2009 | { | |
2010 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
2011 | const char *pin = (const char *)kcontrol->private_value; | |
2012 | ||
2013 | mutex_lock(&codec->mutex); | |
2014 | ||
2015 | if (ucontrol->value.integer.value[0]) | |
ce6120cc | 2016 | snd_soc_dapm_enable_pin(&codec->dapm, pin); |
8b37dbd2 | 2017 | else |
ce6120cc | 2018 | snd_soc_dapm_disable_pin(&codec->dapm, pin); |
8b37dbd2 | 2019 | |
ce6120cc | 2020 | snd_soc_dapm_sync(&codec->dapm); |
8b37dbd2 MB |
2021 | |
2022 | mutex_unlock(&codec->mutex); | |
2023 | ||
2024 | return 0; | |
2025 | } | |
2026 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch); | |
2027 | ||
2b97eabc RP |
2028 | /** |
2029 | * snd_soc_dapm_new_control - create new dapm control | |
ce6120cc | 2030 | * @dapm: DAPM context |
2b97eabc RP |
2031 | * @widget: widget template |
2032 | * | |
2033 | * Creates a new dapm control based upon the template. | |
2034 | * | |
2035 | * Returns 0 for success else error. | |
2036 | */ | |
ce6120cc | 2037 | int snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
2038 | const struct snd_soc_dapm_widget *widget) |
2039 | { | |
2040 | struct snd_soc_dapm_widget *w; | |
ead9b919 | 2041 | size_t name_len; |
2b97eabc RP |
2042 | |
2043 | if ((w = dapm_cnew_widget(widget)) == NULL) | |
2044 | return -ENOMEM; | |
2045 | ||
ead9b919 JN |
2046 | name_len = strlen(widget->name) + 1; |
2047 | if (dapm->codec->name_prefix) | |
2048 | name_len += 1 + strlen(dapm->codec->name_prefix); | |
2049 | w->name = kmalloc(name_len, GFP_KERNEL); | |
2050 | if (w->name == NULL) { | |
2051 | kfree(w); | |
2052 | return -ENOMEM; | |
2053 | } | |
2054 | if (dapm->codec->name_prefix) | |
2055 | snprintf(w->name, name_len, "%s %s", | |
2056 | dapm->codec->name_prefix, widget->name); | |
2057 | else | |
2058 | snprintf(w->name, name_len, "%s", widget->name); | |
2059 | ||
97c866de | 2060 | dapm->n_widgets++; |
ce6120cc LG |
2061 | w->dapm = dapm; |
2062 | w->codec = dapm->codec; | |
2b97eabc RP |
2063 | INIT_LIST_HEAD(&w->sources); |
2064 | INIT_LIST_HEAD(&w->sinks); | |
2065 | INIT_LIST_HEAD(&w->list); | |
97c866de | 2066 | list_add(&w->list, &dapm->card->widgets); |
2b97eabc RP |
2067 | |
2068 | /* machine layer set ups unconnected pins and insertions */ | |
2069 | w->connected = 1; | |
2070 | return 0; | |
2071 | } | |
2072 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control); | |
2073 | ||
4ba1327a MB |
2074 | /** |
2075 | * snd_soc_dapm_new_controls - create new dapm controls | |
ce6120cc | 2076 | * @dapm: DAPM context |
4ba1327a MB |
2077 | * @widget: widget array |
2078 | * @num: number of widgets | |
2079 | * | |
2080 | * Creates new DAPM controls based upon the templates. | |
2081 | * | |
2082 | * Returns 0 for success else error. | |
2083 | */ | |
ce6120cc | 2084 | int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm, |
4ba1327a MB |
2085 | const struct snd_soc_dapm_widget *widget, |
2086 | int num) | |
2087 | { | |
2088 | int i, ret; | |
2089 | ||
2090 | for (i = 0; i < num; i++) { | |
ce6120cc | 2091 | ret = snd_soc_dapm_new_control(dapm, widget); |
b8b33cb5 | 2092 | if (ret < 0) { |
f7d41ae8 JN |
2093 | dev_err(dapm->dev, |
2094 | "ASoC: Failed to create DAPM control %s: %d\n", | |
2095 | widget->name, ret); | |
4ba1327a | 2096 | return ret; |
b8b33cb5 | 2097 | } |
4ba1327a MB |
2098 | widget++; |
2099 | } | |
2100 | return 0; | |
2101 | } | |
2102 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls); | |
2103 | ||
ce6120cc | 2104 | static void soc_dapm_stream_event(struct snd_soc_dapm_context *dapm, |
f0fba2ad | 2105 | const char *stream, int event) |
2b97eabc RP |
2106 | { |
2107 | struct snd_soc_dapm_widget *w; | |
2108 | ||
97c866de | 2109 | list_for_each_entry(w, &dapm->card->widgets, list) |
2b97eabc | 2110 | { |
97c866de | 2111 | if (!w->sname || w->dapm != dapm) |
2b97eabc | 2112 | continue; |
f7d41ae8 JN |
2113 | dev_dbg(w->dapm->dev, "widget %s\n %s stream %s event %d\n", |
2114 | w->name, w->sname, stream, event); | |
2b97eabc RP |
2115 | if (strstr(w->sname, stream)) { |
2116 | switch(event) { | |
2117 | case SND_SOC_DAPM_STREAM_START: | |
2118 | w->active = 1; | |
2119 | break; | |
2120 | case SND_SOC_DAPM_STREAM_STOP: | |
2121 | w->active = 0; | |
2122 | break; | |
2123 | case SND_SOC_DAPM_STREAM_SUSPEND: | |
2b97eabc | 2124 | case SND_SOC_DAPM_STREAM_RESUME: |
2b97eabc | 2125 | case SND_SOC_DAPM_STREAM_PAUSE_PUSH: |
2b97eabc RP |
2126 | case SND_SOC_DAPM_STREAM_PAUSE_RELEASE: |
2127 | break; | |
2128 | } | |
2129 | } | |
2130 | } | |
2b97eabc | 2131 | |
ce6120cc LG |
2132 | dapm_power_widgets(dapm, event); |
2133 | } | |
2134 | ||
2135 | /** | |
2136 | * snd_soc_dapm_stream_event - send a stream event to the dapm core | |
2137 | * @rtd: PCM runtime data | |
2138 | * @stream: stream name | |
2139 | * @event: stream event | |
2140 | * | |
2141 | * Sends a stream event to the dapm core. The core then makes any | |
2142 | * necessary widget power changes. | |
2143 | * | |
2144 | * Returns 0 for success else error. | |
2145 | */ | |
2146 | int snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, | |
2147 | const char *stream, int event) | |
2148 | { | |
2149 | struct snd_soc_codec *codec = rtd->codec; | |
2150 | ||
2151 | if (stream == NULL) | |
2152 | return 0; | |
2153 | ||
2154 | mutex_lock(&codec->mutex); | |
2155 | soc_dapm_stream_event(&codec->dapm, stream, event); | |
8e8b2d67 | 2156 | mutex_unlock(&codec->mutex); |
2b97eabc RP |
2157 | return 0; |
2158 | } | |
2159 | EXPORT_SYMBOL_GPL(snd_soc_dapm_stream_event); | |
2160 | ||
2161 | /** | |
a5302181 | 2162 | * snd_soc_dapm_enable_pin - enable pin. |
ce6120cc | 2163 | * @dapm: DAPM context |
a5302181 | 2164 | * @pin: pin name |
2b97eabc | 2165 | * |
74b8f955 | 2166 | * Enables input/output pin and its parents or children widgets iff there is |
a5302181 LG |
2167 | * a valid audio route and active audio stream. |
2168 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2169 | * do any widget power switching. | |
2b97eabc | 2170 | */ |
ce6120cc | 2171 | int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin) |
2b97eabc | 2172 | { |
ce6120cc | 2173 | return snd_soc_dapm_set_pin(dapm, pin, 1); |
a5302181 LG |
2174 | } |
2175 | EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin); | |
2b97eabc | 2176 | |
da34183e MB |
2177 | /** |
2178 | * snd_soc_dapm_force_enable_pin - force a pin to be enabled | |
ce6120cc | 2179 | * @dapm: DAPM context |
da34183e MB |
2180 | * @pin: pin name |
2181 | * | |
2182 | * Enables input/output pin regardless of any other state. This is | |
2183 | * intended for use with microphone bias supplies used in microphone | |
2184 | * jack detection. | |
2185 | * | |
2186 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2187 | * do any widget power switching. | |
2188 | */ | |
ce6120cc LG |
2189 | int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm, |
2190 | const char *pin) | |
da34183e MB |
2191 | { |
2192 | struct snd_soc_dapm_widget *w; | |
2193 | ||
97c866de JN |
2194 | list_for_each_entry(w, &dapm->card->widgets, list) { |
2195 | if (w->dapm != dapm) | |
2196 | continue; | |
da34183e | 2197 | if (!strcmp(w->name, pin)) { |
f7d41ae8 JN |
2198 | dev_dbg(w->dapm->dev, |
2199 | "dapm: force enable pin %s\n", pin); | |
da34183e MB |
2200 | w->connected = 1; |
2201 | w->force = 1; | |
2202 | return 0; | |
2203 | } | |
2204 | } | |
2205 | ||
f7d41ae8 | 2206 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); |
da34183e MB |
2207 | return -EINVAL; |
2208 | } | |
2209 | EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin); | |
2210 | ||
a5302181 LG |
2211 | /** |
2212 | * snd_soc_dapm_disable_pin - disable pin. | |
ce6120cc | 2213 | * @dapm: DAPM context |
a5302181 LG |
2214 | * @pin: pin name |
2215 | * | |
74b8f955 | 2216 | * Disables input/output pin and its parents or children widgets. |
a5302181 LG |
2217 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to |
2218 | * do any widget power switching. | |
2219 | */ | |
ce6120cc LG |
2220 | int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm, |
2221 | const char *pin) | |
a5302181 | 2222 | { |
ce6120cc | 2223 | return snd_soc_dapm_set_pin(dapm, pin, 0); |
2b97eabc | 2224 | } |
a5302181 | 2225 | EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin); |
2b97eabc | 2226 | |
5817b52a MB |
2227 | /** |
2228 | * snd_soc_dapm_nc_pin - permanently disable pin. | |
ce6120cc | 2229 | * @dapm: DAPM context |
5817b52a MB |
2230 | * @pin: pin name |
2231 | * | |
2232 | * Marks the specified pin as being not connected, disabling it along | |
2233 | * any parent or child widgets. At present this is identical to | |
2234 | * snd_soc_dapm_disable_pin() but in future it will be extended to do | |
2235 | * additional things such as disabling controls which only affect | |
2236 | * paths through the pin. | |
2237 | * | |
2238 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2239 | * do any widget power switching. | |
2240 | */ | |
ce6120cc | 2241 | int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin) |
5817b52a | 2242 | { |
ce6120cc | 2243 | return snd_soc_dapm_set_pin(dapm, pin, 0); |
5817b52a MB |
2244 | } |
2245 | EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin); | |
2246 | ||
eeec12bf | 2247 | /** |
a5302181 | 2248 | * snd_soc_dapm_get_pin_status - get audio pin status |
ce6120cc | 2249 | * @dapm: DAPM context |
a5302181 | 2250 | * @pin: audio signal pin endpoint (or start point) |
eeec12bf | 2251 | * |
a5302181 | 2252 | * Get audio pin status - connected or disconnected. |
eeec12bf | 2253 | * |
a5302181 | 2254 | * Returns 1 for connected otherwise 0. |
eeec12bf | 2255 | */ |
ce6120cc LG |
2256 | int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm, |
2257 | const char *pin) | |
eeec12bf GG |
2258 | { |
2259 | struct snd_soc_dapm_widget *w; | |
2260 | ||
97c866de JN |
2261 | list_for_each_entry(w, &dapm->card->widgets, list) { |
2262 | if (w->dapm != dapm) | |
2263 | continue; | |
a5302181 | 2264 | if (!strcmp(w->name, pin)) |
eeec12bf GG |
2265 | return w->connected; |
2266 | } | |
2267 | ||
2268 | return 0; | |
2269 | } | |
a5302181 | 2270 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status); |
eeec12bf | 2271 | |
1547aba9 MB |
2272 | /** |
2273 | * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint | |
ce6120cc | 2274 | * @dapm: DAPM context |
1547aba9 MB |
2275 | * @pin: audio signal pin endpoint (or start point) |
2276 | * | |
2277 | * Mark the given endpoint or pin as ignoring suspend. When the | |
2278 | * system is disabled a path between two endpoints flagged as ignoring | |
2279 | * suspend will not be disabled. The path must already be enabled via | |
2280 | * normal means at suspend time, it will not be turned on if it was not | |
2281 | * already enabled. | |
2282 | */ | |
ce6120cc LG |
2283 | int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm, |
2284 | const char *pin) | |
1547aba9 MB |
2285 | { |
2286 | struct snd_soc_dapm_widget *w; | |
2287 | ||
97c866de JN |
2288 | list_for_each_entry(w, &dapm->card->widgets, list) { |
2289 | if (w->dapm != dapm) | |
2290 | continue; | |
1547aba9 MB |
2291 | if (!strcmp(w->name, pin)) { |
2292 | w->ignore_suspend = 1; | |
2293 | return 0; | |
2294 | } | |
2295 | } | |
2296 | ||
f7d41ae8 | 2297 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); |
1547aba9 MB |
2298 | return -EINVAL; |
2299 | } | |
2300 | EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend); | |
2301 | ||
2b97eabc RP |
2302 | /** |
2303 | * snd_soc_dapm_free - free dapm resources | |
f0fba2ad | 2304 | * @card: SoC device |
2b97eabc RP |
2305 | * |
2306 | * Free all dapm widgets and resources. | |
2307 | */ | |
ce6120cc | 2308 | void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm) |
2b97eabc | 2309 | { |
ce6120cc LG |
2310 | snd_soc_dapm_sys_remove(dapm->dev); |
2311 | dapm_free_widgets(dapm); | |
2b97eabc RP |
2312 | } |
2313 | EXPORT_SYMBOL_GPL(snd_soc_dapm_free); | |
2314 | ||
ce6120cc | 2315 | static void soc_dapm_shutdown_codec(struct snd_soc_dapm_context *dapm) |
51737470 | 2316 | { |
51737470 MB |
2317 | struct snd_soc_dapm_widget *w; |
2318 | LIST_HEAD(down_list); | |
2319 | int powerdown = 0; | |
2320 | ||
97c866de JN |
2321 | list_for_each_entry(w, &dapm->card->widgets, list) { |
2322 | if (w->dapm != dapm) | |
2323 | continue; | |
51737470 MB |
2324 | if (w->power) { |
2325 | dapm_seq_insert(w, &down_list, dapm_down_seq); | |
c2caa4da | 2326 | w->power = 0; |
51737470 MB |
2327 | powerdown = 1; |
2328 | } | |
2329 | } | |
2330 | ||
2331 | /* If there were no widgets to power down we're already in | |
2332 | * standby. | |
2333 | */ | |
2334 | if (powerdown) { | |
ce6120cc LG |
2335 | snd_soc_dapm_set_bias_level(NULL, dapm, SND_SOC_BIAS_PREPARE); |
2336 | dapm_seq_run(dapm, &down_list, 0, dapm_down_seq); | |
2337 | snd_soc_dapm_set_bias_level(NULL, dapm, SND_SOC_BIAS_STANDBY); | |
51737470 | 2338 | } |
f0fba2ad LG |
2339 | } |
2340 | ||
2341 | /* | |
2342 | * snd_soc_dapm_shutdown - callback for system shutdown | |
2343 | */ | |
2344 | void snd_soc_dapm_shutdown(struct snd_soc_card *card) | |
2345 | { | |
2346 | struct snd_soc_codec *codec; | |
2347 | ||
ce6120cc LG |
2348 | list_for_each_entry(codec, &card->codec_dev_list, list) { |
2349 | soc_dapm_shutdown_codec(&codec->dapm); | |
2350 | snd_soc_dapm_set_bias_level(card, &codec->dapm, SND_SOC_BIAS_OFF); | |
2351 | } | |
51737470 MB |
2352 | } |
2353 | ||
2b97eabc | 2354 | /* Module information */ |
d331124d | 2355 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
2b97eabc RP |
2356 | MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC"); |
2357 | MODULE_LICENSE("GPL"); |