]>
Commit | Line | Data |
---|---|---|
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, | |
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, | |
89 | [snd_soc_dapm_supply] = 11, | |
90 | [snd_soc_dapm_post] = 12, | |
2b97eabc RP |
91 | }; |
92 | ||
12ef193d | 93 | static void pop_wait(u32 pop_time) |
15e4c72f MB |
94 | { |
95 | if (pop_time) | |
96 | schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time)); | |
97 | } | |
98 | ||
fd8d3bc0 | 99 | static void pop_dbg(struct device *dev, u32 pop_time, const char *fmt, ...) |
15e4c72f MB |
100 | { |
101 | va_list args; | |
fd8d3bc0 | 102 | char *buf; |
15e4c72f | 103 | |
fd8d3bc0 JN |
104 | if (!pop_time) |
105 | return; | |
15e4c72f | 106 | |
fd8d3bc0 JN |
107 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); |
108 | if (buf == NULL) | |
109 | return; | |
15e4c72f | 110 | |
fd8d3bc0 JN |
111 | va_start(args, fmt); |
112 | vsnprintf(buf, PAGE_SIZE, fmt, args); | |
9d01df06 | 113 | dev_info(dev, "%s", buf); |
15e4c72f | 114 | va_end(args); |
fd8d3bc0 JN |
115 | |
116 | kfree(buf); | |
15e4c72f MB |
117 | } |
118 | ||
2b97eabc | 119 | /* create a new dapm widget */ |
88cb4290 | 120 | static inline struct snd_soc_dapm_widget *dapm_cnew_widget( |
2b97eabc RP |
121 | const struct snd_soc_dapm_widget *_widget) |
122 | { | |
88cb4290 | 123 | return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL); |
2b97eabc RP |
124 | } |
125 | ||
452c5eaa MB |
126 | /** |
127 | * snd_soc_dapm_set_bias_level - set the bias level for the system | |
f0fba2ad | 128 | * @card: audio device |
452c5eaa MB |
129 | * @level: level to configure |
130 | * | |
131 | * Configure the bias (power) levels for the SoC audio device. | |
132 | * | |
133 | * Returns 0 for success else error. | |
134 | */ | |
f0fba2ad | 135 | static int snd_soc_dapm_set_bias_level(struct snd_soc_card *card, |
ce6120cc LG |
136 | struct snd_soc_dapm_context *dapm, |
137 | enum snd_soc_bias_level level) | |
452c5eaa | 138 | { |
452c5eaa MB |
139 | int ret = 0; |
140 | ||
f83fba8b MB |
141 | switch (level) { |
142 | case SND_SOC_BIAS_ON: | |
ce6120cc | 143 | dev_dbg(dapm->dev, "Setting full bias\n"); |
f83fba8b MB |
144 | break; |
145 | case SND_SOC_BIAS_PREPARE: | |
ce6120cc | 146 | dev_dbg(dapm->dev, "Setting bias prepare\n"); |
f83fba8b MB |
147 | break; |
148 | case SND_SOC_BIAS_STANDBY: | |
ce6120cc | 149 | dev_dbg(dapm->dev, "Setting standby bias\n"); |
f83fba8b MB |
150 | break; |
151 | case SND_SOC_BIAS_OFF: | |
ce6120cc | 152 | dev_dbg(dapm->dev, "Setting bias off\n"); |
f83fba8b MB |
153 | break; |
154 | default: | |
ce6120cc | 155 | dev_err(dapm->dev, "Setting invalid bias %d\n", level); |
f83fba8b MB |
156 | return -EINVAL; |
157 | } | |
158 | ||
84e90930 MB |
159 | trace_snd_soc_bias_level_start(card, level); |
160 | ||
f0fba2ad | 161 | if (card && card->set_bias_level) |
452c5eaa | 162 | ret = card->set_bias_level(card, level); |
474e09ca | 163 | if (ret == 0) { |
ce6120cc LG |
164 | if (dapm->codec && dapm->codec->driver->set_bias_level) |
165 | ret = dapm->codec->driver->set_bias_level(dapm->codec, level); | |
474e09ca | 166 | else |
ce6120cc | 167 | dapm->bias_level = level; |
474e09ca | 168 | } |
1badabd9 MB |
169 | if (ret == 0) { |
170 | if (card && card->set_bias_level_post) | |
171 | ret = card->set_bias_level_post(card, level); | |
172 | } | |
452c5eaa | 173 | |
84e90930 MB |
174 | trace_snd_soc_bias_level_done(card, level); |
175 | ||
452c5eaa MB |
176 | return ret; |
177 | } | |
178 | ||
2b97eabc RP |
179 | /* set up initial codec paths */ |
180 | static void dapm_set_path_status(struct snd_soc_dapm_widget *w, | |
181 | struct snd_soc_dapm_path *p, int i) | |
182 | { | |
183 | switch (w->id) { | |
184 | case snd_soc_dapm_switch: | |
ca9c1aae IM |
185 | case snd_soc_dapm_mixer: |
186 | case snd_soc_dapm_mixer_named_ctl: { | |
2b97eabc | 187 | int val; |
4eaa9819 JS |
188 | struct soc_mixer_control *mc = (struct soc_mixer_control *) |
189 | w->kcontrols[i].private_value; | |
815ecf8d JS |
190 | unsigned int reg = mc->reg; |
191 | unsigned int shift = mc->shift; | |
4eaa9819 | 192 | int max = mc->max; |
815ecf8d JS |
193 | unsigned int mask = (1 << fls(max)) - 1; |
194 | unsigned int invert = mc->invert; | |
2b97eabc RP |
195 | |
196 | val = snd_soc_read(w->codec, reg); | |
197 | val = (val >> shift) & mask; | |
198 | ||
199 | if ((invert && !val) || (!invert && val)) | |
200 | p->connect = 1; | |
201 | else | |
202 | p->connect = 0; | |
203 | } | |
204 | break; | |
205 | case snd_soc_dapm_mux: { | |
206 | struct soc_enum *e = (struct soc_enum *)w->kcontrols[i].private_value; | |
207 | int val, item, bitmask; | |
208 | ||
f8ba0b7b | 209 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
210 | ; |
211 | val = snd_soc_read(w->codec, e->reg); | |
212 | item = (val >> e->shift_l) & (bitmask - 1); | |
213 | ||
214 | p->connect = 0; | |
f8ba0b7b | 215 | for (i = 0; i < e->max; i++) { |
2b97eabc RP |
216 | if (!(strcmp(p->name, e->texts[i])) && item == i) |
217 | p->connect = 1; | |
218 | } | |
219 | } | |
220 | break; | |
24ff33ac DP |
221 | case snd_soc_dapm_virt_mux: { |
222 | struct soc_enum *e = (struct soc_enum *)w->kcontrols[i].private_value; | |
223 | ||
224 | p->connect = 0; | |
225 | /* since a virtual mux has no backing registers to | |
226 | * decide which path to connect, it will try to match | |
227 | * with the first enumeration. This is to ensure | |
228 | * that the default mux choice (the first) will be | |
229 | * correctly powered up during initialization. | |
230 | */ | |
231 | if (!strcmp(p->name, e->texts[0])) | |
232 | p->connect = 1; | |
233 | } | |
234 | break; | |
2e72f8e3 | 235 | case snd_soc_dapm_value_mux: { |
74155556 | 236 | struct soc_enum *e = (struct soc_enum *) |
2e72f8e3 PU |
237 | w->kcontrols[i].private_value; |
238 | int val, item; | |
239 | ||
240 | val = snd_soc_read(w->codec, e->reg); | |
241 | val = (val >> e->shift_l) & e->mask; | |
242 | for (item = 0; item < e->max; item++) { | |
243 | if (val == e->values[item]) | |
244 | break; | |
245 | } | |
246 | ||
247 | p->connect = 0; | |
248 | for (i = 0; i < e->max; i++) { | |
249 | if (!(strcmp(p->name, e->texts[i])) && item == i) | |
250 | p->connect = 1; | |
251 | } | |
252 | } | |
253 | break; | |
2b97eabc RP |
254 | /* does not effect routing - always connected */ |
255 | case snd_soc_dapm_pga: | |
d88429a6 | 256 | case snd_soc_dapm_out_drv: |
2b97eabc RP |
257 | case snd_soc_dapm_output: |
258 | case snd_soc_dapm_adc: | |
259 | case snd_soc_dapm_input: | |
260 | case snd_soc_dapm_dac: | |
261 | case snd_soc_dapm_micbias: | |
262 | case snd_soc_dapm_vmid: | |
246d0a17 | 263 | case snd_soc_dapm_supply: |
010ff262 MB |
264 | case snd_soc_dapm_aif_in: |
265 | case snd_soc_dapm_aif_out: | |
2b97eabc RP |
266 | p->connect = 1; |
267 | break; | |
268 | /* does effect routing - dynamically connected */ | |
269 | case snd_soc_dapm_hp: | |
270 | case snd_soc_dapm_mic: | |
271 | case snd_soc_dapm_spk: | |
272 | case snd_soc_dapm_line: | |
273 | case snd_soc_dapm_pre: | |
274 | case snd_soc_dapm_post: | |
275 | p->connect = 0; | |
276 | break; | |
277 | } | |
278 | } | |
279 | ||
74b8f955 | 280 | /* connect mux widget to its interconnecting audio paths */ |
ce6120cc | 281 | static int dapm_connect_mux(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
282 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, |
283 | struct snd_soc_dapm_path *path, const char *control_name, | |
284 | const struct snd_kcontrol_new *kcontrol) | |
285 | { | |
286 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
287 | int i; | |
288 | ||
f8ba0b7b | 289 | for (i = 0; i < e->max; i++) { |
2b97eabc | 290 | if (!(strcmp(control_name, e->texts[i]))) { |
8ddab3f5 | 291 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
292 | list_add(&path->list_sink, &dest->sources); |
293 | list_add(&path->list_source, &src->sinks); | |
294 | path->name = (char*)e->texts[i]; | |
295 | dapm_set_path_status(dest, path, 0); | |
296 | return 0; | |
297 | } | |
298 | } | |
299 | ||
300 | return -ENODEV; | |
301 | } | |
302 | ||
74b8f955 | 303 | /* connect mixer widget to its interconnecting audio paths */ |
ce6120cc | 304 | static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
305 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, |
306 | struct snd_soc_dapm_path *path, const char *control_name) | |
307 | { | |
308 | int i; | |
309 | ||
310 | /* search for mixer kcontrol */ | |
311 | for (i = 0; i < dest->num_kcontrols; i++) { | |
312 | if (!strcmp(control_name, dest->kcontrols[i].name)) { | |
8ddab3f5 | 313 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
314 | list_add(&path->list_sink, &dest->sources); |
315 | list_add(&path->list_source, &src->sinks); | |
316 | path->name = dest->kcontrols[i].name; | |
317 | dapm_set_path_status(dest, path, i); | |
318 | return 0; | |
319 | } | |
320 | } | |
321 | return -ENODEV; | |
322 | } | |
323 | ||
324 | /* update dapm codec register bits */ | |
325 | static int dapm_update_bits(struct snd_soc_dapm_widget *widget) | |
326 | { | |
327 | int change, power; | |
46f5822f | 328 | unsigned int old, new; |
2b97eabc | 329 | struct snd_soc_codec *codec = widget->codec; |
ce6120cc | 330 | struct snd_soc_dapm_context *dapm = widget->dapm; |
3a45b867 | 331 | struct snd_soc_card *card = dapm->card; |
2b97eabc RP |
332 | |
333 | /* check for valid widgets */ | |
334 | if (widget->reg < 0 || widget->id == snd_soc_dapm_input || | |
335 | widget->id == snd_soc_dapm_output || | |
336 | widget->id == snd_soc_dapm_hp || | |
337 | widget->id == snd_soc_dapm_mic || | |
338 | widget->id == snd_soc_dapm_line || | |
339 | widget->id == snd_soc_dapm_spk) | |
340 | return 0; | |
341 | ||
342 | power = widget->power; | |
343 | if (widget->invert) | |
344 | power = (power ? 0:1); | |
345 | ||
346 | old = snd_soc_read(codec, widget->reg); | |
347 | new = (old & ~(0x1 << widget->shift)) | (power << widget->shift); | |
348 | ||
349 | change = old != new; | |
350 | if (change) { | |
fd8d3bc0 JN |
351 | pop_dbg(dapm->dev, card->pop_time, |
352 | "pop test %s : %s in %d ms\n", | |
12ef193d | 353 | widget->name, widget->power ? "on" : "off", |
3a45b867 JN |
354 | card->pop_time); |
355 | pop_wait(card->pop_time); | |
69224719 | 356 | snd_soc_write(codec, widget->reg, new); |
2b97eabc | 357 | } |
f7d41ae8 JN |
358 | dev_dbg(dapm->dev, "reg %x old %x new %x change %d\n", widget->reg, |
359 | old, new, change); | |
2b97eabc RP |
360 | return change; |
361 | } | |
362 | ||
2b97eabc | 363 | /* create new dapm mixer control */ |
ce6120cc | 364 | static int dapm_new_mixer(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
365 | struct snd_soc_dapm_widget *w) |
366 | { | |
367 | int i, ret = 0; | |
219b93f5 | 368 | size_t name_len; |
2b97eabc | 369 | struct snd_soc_dapm_path *path; |
ce6120cc | 370 | struct snd_card *card = dapm->codec->card->snd_card; |
2b97eabc RP |
371 | |
372 | /* add kcontrol */ | |
373 | for (i = 0; i < w->num_kcontrols; i++) { | |
374 | ||
375 | /* match name */ | |
376 | list_for_each_entry(path, &w->sources, list_sink) { | |
377 | ||
378 | /* mixer/mux paths name must match control name */ | |
379 | if (path->name != (char*)w->kcontrols[i].name) | |
380 | continue; | |
381 | ||
ca9c1aae IM |
382 | /* add dapm control with long name. |
383 | * for dapm_mixer this is the concatenation of the | |
384 | * mixer and kcontrol name. | |
385 | * for dapm_mixer_named_ctl this is simply the | |
386 | * kcontrol name. | |
387 | */ | |
388 | name_len = strlen(w->kcontrols[i].name) + 1; | |
07495f3e | 389 | if (w->id != snd_soc_dapm_mixer_named_ctl) |
ca9c1aae IM |
390 | name_len += 1 + strlen(w->name); |
391 | ||
219b93f5 | 392 | path->long_name = kmalloc(name_len, GFP_KERNEL); |
ca9c1aae | 393 | |
2b97eabc RP |
394 | if (path->long_name == NULL) |
395 | return -ENOMEM; | |
396 | ||
ca9c1aae | 397 | switch (w->id) { |
ca9c1aae IM |
398 | default: |
399 | snprintf(path->long_name, name_len, "%s %s", | |
400 | w->name, w->kcontrols[i].name); | |
07495f3e | 401 | break; |
ca9c1aae IM |
402 | case snd_soc_dapm_mixer_named_ctl: |
403 | snprintf(path->long_name, name_len, "%s", | |
404 | w->kcontrols[i].name); | |
07495f3e | 405 | break; |
ca9c1aae IM |
406 | } |
407 | ||
219b93f5 MB |
408 | path->long_name[name_len - 1] = '\0'; |
409 | ||
2b97eabc RP |
410 | path->kcontrol = snd_soc_cnew(&w->kcontrols[i], w, |
411 | path->long_name); | |
ce6120cc | 412 | ret = snd_ctl_add(card, path->kcontrol); |
2b97eabc | 413 | if (ret < 0) { |
f7d41ae8 JN |
414 | dev_err(dapm->dev, |
415 | "asoc: failed to add dapm kcontrol %s: %d\n", | |
416 | path->long_name, ret); | |
2b97eabc RP |
417 | kfree(path->long_name); |
418 | path->long_name = NULL; | |
419 | return ret; | |
420 | } | |
421 | } | |
422 | } | |
423 | return ret; | |
424 | } | |
425 | ||
426 | /* create new dapm mux control */ | |
ce6120cc | 427 | static int dapm_new_mux(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
428 | struct snd_soc_dapm_widget *w) |
429 | { | |
430 | struct snd_soc_dapm_path *path = NULL; | |
431 | struct snd_kcontrol *kcontrol; | |
ce6120cc | 432 | struct snd_card *card = dapm->codec->card->snd_card; |
2b97eabc RP |
433 | int ret = 0; |
434 | ||
435 | if (!w->num_kcontrols) { | |
f7d41ae8 | 436 | dev_err(dapm->dev, "asoc: mux %s has no controls\n", w->name); |
2b97eabc RP |
437 | return -EINVAL; |
438 | } | |
439 | ||
440 | kcontrol = snd_soc_cnew(&w->kcontrols[0], w, w->name); | |
ce6120cc LG |
441 | ret = snd_ctl_add(card, kcontrol); |
442 | ||
2b97eabc RP |
443 | if (ret < 0) |
444 | goto err; | |
445 | ||
446 | list_for_each_entry(path, &w->sources, list_sink) | |
447 | path->kcontrol = kcontrol; | |
448 | ||
449 | return ret; | |
450 | ||
451 | err: | |
f7d41ae8 | 452 | dev_err(dapm->dev, "asoc: failed to add kcontrol %s\n", w->name); |
2b97eabc RP |
453 | return ret; |
454 | } | |
455 | ||
456 | /* create new dapm volume control */ | |
ce6120cc | 457 | static int dapm_new_pga(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
458 | struct snd_soc_dapm_widget *w) |
459 | { | |
a6c65736 | 460 | if (w->num_kcontrols) |
f7d41ae8 JN |
461 | dev_err(w->dapm->dev, |
462 | "asoc: PGA controls not supported: '%s'\n", w->name); | |
2b97eabc | 463 | |
a6c65736 | 464 | return 0; |
2b97eabc RP |
465 | } |
466 | ||
467 | /* reset 'walked' bit for each dapm path */ | |
ce6120cc | 468 | static inline void dapm_clear_walk(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
469 | { |
470 | struct snd_soc_dapm_path *p; | |
471 | ||
8ddab3f5 | 472 | list_for_each_entry(p, &dapm->card->paths, list) |
2b97eabc RP |
473 | p->walked = 0; |
474 | } | |
475 | ||
9949788b MB |
476 | /* We implement power down on suspend by checking the power state of |
477 | * the ALSA card - when we are suspending the ALSA state for the card | |
478 | * is set to D3. | |
479 | */ | |
480 | static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget) | |
481 | { | |
ce6120cc | 482 | int level = snd_power_get_state(widget->dapm->codec->card->snd_card); |
9949788b | 483 | |
f0fba2ad | 484 | switch (level) { |
9949788b MB |
485 | case SNDRV_CTL_POWER_D3hot: |
486 | case SNDRV_CTL_POWER_D3cold: | |
1547aba9 | 487 | if (widget->ignore_suspend) |
f7d41ae8 JN |
488 | dev_dbg(widget->dapm->dev, "%s ignoring suspend\n", |
489 | widget->name); | |
1547aba9 | 490 | return widget->ignore_suspend; |
9949788b MB |
491 | default: |
492 | return 1; | |
493 | } | |
494 | } | |
495 | ||
2b97eabc RP |
496 | /* |
497 | * Recursively check for a completed path to an active or physically connected | |
498 | * output widget. Returns number of complete paths. | |
499 | */ | |
500 | static int is_connected_output_ep(struct snd_soc_dapm_widget *widget) | |
501 | { | |
502 | struct snd_soc_dapm_path *path; | |
503 | int con = 0; | |
504 | ||
246d0a17 MB |
505 | if (widget->id == snd_soc_dapm_supply) |
506 | return 0; | |
507 | ||
010ff262 MB |
508 | switch (widget->id) { |
509 | case snd_soc_dapm_adc: | |
510 | case snd_soc_dapm_aif_out: | |
511 | if (widget->active) | |
9949788b | 512 | return snd_soc_dapm_suspend_check(widget); |
010ff262 MB |
513 | default: |
514 | break; | |
515 | } | |
2b97eabc RP |
516 | |
517 | if (widget->connected) { | |
518 | /* connected pin ? */ | |
519 | if (widget->id == snd_soc_dapm_output && !widget->ext) | |
9949788b | 520 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
521 | |
522 | /* connected jack or spk ? */ | |
523 | if (widget->id == snd_soc_dapm_hp || widget->id == snd_soc_dapm_spk || | |
eaeae5d9 | 524 | (widget->id == snd_soc_dapm_line && !list_empty(&widget->sources))) |
9949788b | 525 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
526 | } |
527 | ||
528 | list_for_each_entry(path, &widget->sinks, list_source) { | |
529 | if (path->walked) | |
530 | continue; | |
531 | ||
532 | if (path->sink && path->connect) { | |
533 | path->walked = 1; | |
534 | con += is_connected_output_ep(path->sink); | |
535 | } | |
536 | } | |
537 | ||
538 | return con; | |
539 | } | |
540 | ||
541 | /* | |
542 | * Recursively check for a completed path to an active or physically connected | |
543 | * input widget. Returns number of complete paths. | |
544 | */ | |
545 | static int is_connected_input_ep(struct snd_soc_dapm_widget *widget) | |
546 | { | |
547 | struct snd_soc_dapm_path *path; | |
548 | int con = 0; | |
549 | ||
246d0a17 MB |
550 | if (widget->id == snd_soc_dapm_supply) |
551 | return 0; | |
552 | ||
2b97eabc | 553 | /* active stream ? */ |
010ff262 MB |
554 | switch (widget->id) { |
555 | case snd_soc_dapm_dac: | |
556 | case snd_soc_dapm_aif_in: | |
557 | if (widget->active) | |
9949788b | 558 | return snd_soc_dapm_suspend_check(widget); |
010ff262 MB |
559 | default: |
560 | break; | |
561 | } | |
2b97eabc RP |
562 | |
563 | if (widget->connected) { | |
564 | /* connected pin ? */ | |
565 | if (widget->id == snd_soc_dapm_input && !widget->ext) | |
9949788b | 566 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
567 | |
568 | /* connected VMID/Bias for lower pops */ | |
569 | if (widget->id == snd_soc_dapm_vmid) | |
9949788b | 570 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
571 | |
572 | /* connected jack ? */ | |
eaeae5d9 PU |
573 | if (widget->id == snd_soc_dapm_mic || |
574 | (widget->id == snd_soc_dapm_line && !list_empty(&widget->sinks))) | |
9949788b | 575 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
576 | } |
577 | ||
578 | list_for_each_entry(path, &widget->sources, list_sink) { | |
579 | if (path->walked) | |
580 | continue; | |
581 | ||
582 | if (path->source && path->connect) { | |
583 | path->walked = 1; | |
584 | con += is_connected_input_ep(path->source); | |
585 | } | |
586 | } | |
587 | ||
588 | return con; | |
589 | } | |
590 | ||
e2be2ccf JN |
591 | /* |
592 | * Handler for generic register modifier widget. | |
593 | */ | |
594 | int dapm_reg_event(struct snd_soc_dapm_widget *w, | |
595 | struct snd_kcontrol *kcontrol, int event) | |
596 | { | |
597 | unsigned int val; | |
598 | ||
599 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
600 | val = w->on_val; | |
601 | else | |
602 | val = w->off_val; | |
603 | ||
604 | snd_soc_update_bits(w->codec, -(w->reg + 1), | |
605 | w->mask << w->shift, val << w->shift); | |
606 | ||
607 | return 0; | |
608 | } | |
11589418 | 609 | EXPORT_SYMBOL_GPL(dapm_reg_event); |
e2be2ccf | 610 | |
025756ec MB |
611 | /* Standard power change method, used to apply power changes to most |
612 | * widgets. | |
613 | */ | |
614 | static int dapm_generic_apply_power(struct snd_soc_dapm_widget *w) | |
615 | { | |
616 | int ret; | |
617 | ||
618 | /* call any power change event handlers */ | |
619 | if (w->event) | |
f7d41ae8 | 620 | dev_dbg(w->dapm->dev, "power %s event for %s flags %x\n", |
025756ec MB |
621 | w->power ? "on" : "off", |
622 | w->name, w->event_flags); | |
623 | ||
624 | /* power up pre event */ | |
625 | if (w->power && w->event && | |
626 | (w->event_flags & SND_SOC_DAPM_PRE_PMU)) { | |
627 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMU); | |
628 | if (ret < 0) | |
629 | return ret; | |
630 | } | |
631 | ||
632 | /* power down pre event */ | |
633 | if (!w->power && w->event && | |
634 | (w->event_flags & SND_SOC_DAPM_PRE_PMD)) { | |
635 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMD); | |
636 | if (ret < 0) | |
637 | return ret; | |
638 | } | |
639 | ||
025756ec MB |
640 | dapm_update_bits(w); |
641 | ||
025756ec MB |
642 | /* power up post event */ |
643 | if (w->power && w->event && | |
644 | (w->event_flags & SND_SOC_DAPM_POST_PMU)) { | |
645 | ret = w->event(w, | |
646 | NULL, SND_SOC_DAPM_POST_PMU); | |
647 | if (ret < 0) | |
648 | return ret; | |
649 | } | |
650 | ||
651 | /* power down post event */ | |
652 | if (!w->power && w->event && | |
653 | (w->event_flags & SND_SOC_DAPM_POST_PMD)) { | |
654 | ret = w->event(w, NULL, SND_SOC_DAPM_POST_PMD); | |
655 | if (ret < 0) | |
656 | return ret; | |
657 | } | |
658 | ||
659 | return 0; | |
660 | } | |
661 | ||
cd0f2d47 MB |
662 | /* Generic check to see if a widget should be powered. |
663 | */ | |
664 | static int dapm_generic_check_power(struct snd_soc_dapm_widget *w) | |
665 | { | |
666 | int in, out; | |
667 | ||
668 | in = is_connected_input_ep(w); | |
ce6120cc | 669 | dapm_clear_walk(w->dapm); |
cd0f2d47 | 670 | out = is_connected_output_ep(w); |
ce6120cc | 671 | dapm_clear_walk(w->dapm); |
cd0f2d47 MB |
672 | return out != 0 && in != 0; |
673 | } | |
674 | ||
6ea31b9f MB |
675 | /* Check to see if an ADC has power */ |
676 | static int dapm_adc_check_power(struct snd_soc_dapm_widget *w) | |
677 | { | |
678 | int in; | |
679 | ||
680 | if (w->active) { | |
681 | in = is_connected_input_ep(w); | |
ce6120cc | 682 | dapm_clear_walk(w->dapm); |
6ea31b9f MB |
683 | return in != 0; |
684 | } else { | |
685 | return dapm_generic_check_power(w); | |
686 | } | |
687 | } | |
688 | ||
689 | /* Check to see if a DAC has power */ | |
690 | static int dapm_dac_check_power(struct snd_soc_dapm_widget *w) | |
691 | { | |
692 | int out; | |
693 | ||
694 | if (w->active) { | |
695 | out = is_connected_output_ep(w); | |
ce6120cc | 696 | dapm_clear_walk(w->dapm); |
6ea31b9f MB |
697 | return out != 0; |
698 | } else { | |
699 | return dapm_generic_check_power(w); | |
700 | } | |
701 | } | |
702 | ||
246d0a17 MB |
703 | /* Check to see if a power supply is needed */ |
704 | static int dapm_supply_check_power(struct snd_soc_dapm_widget *w) | |
705 | { | |
706 | struct snd_soc_dapm_path *path; | |
707 | int power = 0; | |
708 | ||
709 | /* Check if one of our outputs is connected */ | |
710 | list_for_each_entry(path, &w->sinks, list_source) { | |
215edda3 MB |
711 | if (path->connected && |
712 | !path->connected(path->source, path->sink)) | |
713 | continue; | |
714 | ||
3017358a MB |
715 | if (!path->sink) |
716 | continue; | |
717 | ||
718 | if (path->sink->force) { | |
719 | power = 1; | |
720 | break; | |
721 | } | |
722 | ||
723 | if (path->sink->power_check && | |
246d0a17 MB |
724 | path->sink->power_check(path->sink)) { |
725 | power = 1; | |
726 | break; | |
727 | } | |
728 | } | |
729 | ||
ce6120cc | 730 | dapm_clear_walk(w->dapm); |
246d0a17 MB |
731 | |
732 | return power; | |
733 | } | |
734 | ||
38357ab2 MB |
735 | static int dapm_seq_compare(struct snd_soc_dapm_widget *a, |
736 | struct snd_soc_dapm_widget *b, | |
828a842f | 737 | bool power_up) |
42aa3418 | 738 | { |
828a842f MB |
739 | int *sort; |
740 | ||
741 | if (power_up) | |
742 | sort = dapm_up_seq; | |
743 | else | |
744 | sort = dapm_down_seq; | |
745 | ||
38357ab2 MB |
746 | if (sort[a->id] != sort[b->id]) |
747 | return sort[a->id] - sort[b->id]; | |
20e4859d MB |
748 | if (a->subseq != b->subseq) { |
749 | if (power_up) | |
750 | return a->subseq - b->subseq; | |
751 | else | |
752 | return b->subseq - a->subseq; | |
753 | } | |
b22ead2a MB |
754 | if (a->reg != b->reg) |
755 | return a->reg - b->reg; | |
84dab567 MB |
756 | if (a->dapm != b->dapm) |
757 | return (unsigned long)a->dapm - (unsigned long)b->dapm; | |
42aa3418 | 758 | |
38357ab2 MB |
759 | return 0; |
760 | } | |
42aa3418 | 761 | |
38357ab2 MB |
762 | /* Insert a widget in order into a DAPM power sequence. */ |
763 | static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget, | |
764 | struct list_head *list, | |
828a842f | 765 | bool power_up) |
38357ab2 MB |
766 | { |
767 | struct snd_soc_dapm_widget *w; | |
768 | ||
769 | list_for_each_entry(w, list, power_list) | |
828a842f | 770 | if (dapm_seq_compare(new_widget, w, power_up) < 0) { |
38357ab2 MB |
771 | list_add_tail(&new_widget->power_list, &w->power_list); |
772 | return; | |
773 | } | |
774 | ||
775 | list_add_tail(&new_widget->power_list, list); | |
776 | } | |
777 | ||
68f89ad8 MB |
778 | static void dapm_seq_check_event(struct snd_soc_dapm_context *dapm, |
779 | struct snd_soc_dapm_widget *w, int event) | |
780 | { | |
781 | struct snd_soc_card *card = dapm->card; | |
782 | const char *ev_name; | |
783 | int power, ret; | |
784 | ||
785 | switch (event) { | |
786 | case SND_SOC_DAPM_PRE_PMU: | |
787 | ev_name = "PRE_PMU"; | |
788 | power = 1; | |
789 | break; | |
790 | case SND_SOC_DAPM_POST_PMU: | |
791 | ev_name = "POST_PMU"; | |
792 | power = 1; | |
793 | break; | |
794 | case SND_SOC_DAPM_PRE_PMD: | |
795 | ev_name = "PRE_PMD"; | |
796 | power = 0; | |
797 | break; | |
798 | case SND_SOC_DAPM_POST_PMD: | |
799 | ev_name = "POST_PMD"; | |
800 | power = 0; | |
801 | break; | |
802 | default: | |
803 | BUG(); | |
804 | return; | |
805 | } | |
806 | ||
807 | if (w->power != power) | |
808 | return; | |
809 | ||
810 | if (w->event && (w->event_flags & event)) { | |
811 | pop_dbg(dapm->dev, card->pop_time, "pop test : %s %s\n", | |
812 | w->name, ev_name); | |
84e90930 | 813 | trace_snd_soc_dapm_widget_event_start(w, event); |
68f89ad8 | 814 | ret = w->event(w, NULL, event); |
84e90930 | 815 | trace_snd_soc_dapm_widget_event_done(w, event); |
68f89ad8 MB |
816 | if (ret < 0) |
817 | pr_err("%s: %s event failed: %d\n", | |
818 | ev_name, w->name, ret); | |
819 | } | |
820 | } | |
821 | ||
b22ead2a | 822 | /* Apply the coalesced changes from a DAPM sequence */ |
ce6120cc | 823 | static void dapm_seq_run_coalesced(struct snd_soc_dapm_context *dapm, |
b22ead2a | 824 | struct list_head *pending) |
163cac06 | 825 | { |
3a45b867 | 826 | struct snd_soc_card *card = dapm->card; |
68f89ad8 MB |
827 | struct snd_soc_dapm_widget *w; |
828 | int reg, power; | |
b22ead2a MB |
829 | unsigned int value = 0; |
830 | unsigned int mask = 0; | |
831 | unsigned int cur_mask; | |
832 | ||
833 | reg = list_first_entry(pending, struct snd_soc_dapm_widget, | |
834 | power_list)->reg; | |
835 | ||
836 | list_for_each_entry(w, pending, power_list) { | |
837 | cur_mask = 1 << w->shift; | |
838 | BUG_ON(reg != w->reg); | |
839 | ||
840 | if (w->invert) | |
841 | power = !w->power; | |
842 | else | |
843 | power = w->power; | |
844 | ||
845 | mask |= cur_mask; | |
846 | if (power) | |
847 | value |= cur_mask; | |
848 | ||
fd8d3bc0 | 849 | pop_dbg(dapm->dev, card->pop_time, |
b22ead2a MB |
850 | "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n", |
851 | w->name, reg, value, mask); | |
81628103 | 852 | |
68f89ad8 MB |
853 | /* Check for events */ |
854 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMU); | |
855 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMD); | |
81628103 MB |
856 | } |
857 | ||
858 | if (reg >= 0) { | |
fd8d3bc0 | 859 | pop_dbg(dapm->dev, card->pop_time, |
81628103 | 860 | "pop test : Applying 0x%x/0x%x to %x in %dms\n", |
3a45b867 JN |
861 | value, mask, reg, card->pop_time); |
862 | pop_wait(card->pop_time); | |
ce6120cc | 863 | snd_soc_update_bits(dapm->codec, reg, mask, value); |
b22ead2a MB |
864 | } |
865 | ||
81628103 | 866 | list_for_each_entry(w, pending, power_list) { |
68f89ad8 MB |
867 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMU); |
868 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMD); | |
81628103 | 869 | } |
b22ead2a | 870 | } |
42aa3418 | 871 | |
b22ead2a MB |
872 | /* Apply a DAPM power sequence. |
873 | * | |
874 | * We walk over a pre-sorted list of widgets to apply power to. In | |
875 | * order to minimise the number of writes to the device required | |
876 | * multiple widgets will be updated in a single write where possible. | |
877 | * Currently anything that requires more than a single write is not | |
878 | * handled. | |
879 | */ | |
ce6120cc | 880 | static void dapm_seq_run(struct snd_soc_dapm_context *dapm, |
828a842f | 881 | struct list_head *list, int event, bool power_up) |
b22ead2a MB |
882 | { |
883 | struct snd_soc_dapm_widget *w, *n; | |
884 | LIST_HEAD(pending); | |
885 | int cur_sort = -1; | |
20e4859d | 886 | int cur_subseq = -1; |
b22ead2a | 887 | int cur_reg = SND_SOC_NOPM; |
7be31be8 | 888 | struct snd_soc_dapm_context *cur_dapm = NULL; |
474b62d6 | 889 | int ret, i; |
828a842f MB |
890 | int *sort; |
891 | ||
892 | if (power_up) | |
893 | sort = dapm_up_seq; | |
894 | else | |
895 | sort = dapm_down_seq; | |
163cac06 | 896 | |
b22ead2a MB |
897 | list_for_each_entry_safe(w, n, list, power_list) { |
898 | ret = 0; | |
899 | ||
900 | /* Do we need to apply any queued changes? */ | |
7be31be8 | 901 | if (sort[w->id] != cur_sort || w->reg != cur_reg || |
20e4859d | 902 | w->dapm != cur_dapm || w->subseq != cur_subseq) { |
b22ead2a | 903 | if (!list_empty(&pending)) |
7be31be8 | 904 | dapm_seq_run_coalesced(cur_dapm, &pending); |
b22ead2a | 905 | |
474b62d6 MB |
906 | if (cur_dapm && cur_dapm->seq_notifier) { |
907 | for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++) | |
908 | if (sort[i] == cur_sort) | |
909 | cur_dapm->seq_notifier(cur_dapm, | |
f85a9e0d MB |
910 | i, |
911 | cur_subseq); | |
474b62d6 MB |
912 | } |
913 | ||
b22ead2a MB |
914 | INIT_LIST_HEAD(&pending); |
915 | cur_sort = -1; | |
20e4859d | 916 | cur_subseq = -1; |
b22ead2a | 917 | cur_reg = SND_SOC_NOPM; |
7be31be8 | 918 | cur_dapm = NULL; |
b22ead2a MB |
919 | } |
920 | ||
163cac06 MB |
921 | switch (w->id) { |
922 | case snd_soc_dapm_pre: | |
923 | if (!w->event) | |
b22ead2a MB |
924 | list_for_each_entry_safe_continue(w, n, list, |
925 | power_list); | |
163cac06 | 926 | |
b22ead2a | 927 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
928 | ret = w->event(w, |
929 | NULL, SND_SOC_DAPM_PRE_PMU); | |
b22ead2a | 930 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
931 | ret = w->event(w, |
932 | NULL, SND_SOC_DAPM_PRE_PMD); | |
163cac06 MB |
933 | break; |
934 | ||
935 | case snd_soc_dapm_post: | |
936 | if (!w->event) | |
b22ead2a MB |
937 | list_for_each_entry_safe_continue(w, n, list, |
938 | power_list); | |
163cac06 | 939 | |
b22ead2a | 940 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
941 | ret = w->event(w, |
942 | NULL, SND_SOC_DAPM_POST_PMU); | |
b22ead2a | 943 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
944 | ret = w->event(w, |
945 | NULL, SND_SOC_DAPM_POST_PMD); | |
163cac06 MB |
946 | break; |
947 | ||
b22ead2a MB |
948 | case snd_soc_dapm_input: |
949 | case snd_soc_dapm_output: | |
950 | case snd_soc_dapm_hp: | |
951 | case snd_soc_dapm_mic: | |
952 | case snd_soc_dapm_line: | |
953 | case snd_soc_dapm_spk: | |
954 | /* No register support currently */ | |
163cac06 | 955 | ret = dapm_generic_apply_power(w); |
163cac06 | 956 | break; |
b22ead2a MB |
957 | |
958 | default: | |
81628103 MB |
959 | /* Queue it up for application */ |
960 | cur_sort = sort[w->id]; | |
20e4859d | 961 | cur_subseq = w->subseq; |
81628103 | 962 | cur_reg = w->reg; |
7be31be8 | 963 | cur_dapm = w->dapm; |
81628103 MB |
964 | list_move(&w->power_list, &pending); |
965 | break; | |
163cac06 | 966 | } |
b22ead2a MB |
967 | |
968 | if (ret < 0) | |
f7d41ae8 JN |
969 | dev_err(w->dapm->dev, |
970 | "Failed to apply widget power: %d\n", ret); | |
6ea31b9f | 971 | } |
b22ead2a MB |
972 | |
973 | if (!list_empty(&pending)) | |
ce6120cc | 974 | dapm_seq_run_coalesced(dapm, &pending); |
474b62d6 MB |
975 | |
976 | if (cur_dapm && cur_dapm->seq_notifier) { | |
977 | for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++) | |
978 | if (sort[i] == cur_sort) | |
979 | cur_dapm->seq_notifier(cur_dapm, | |
f85a9e0d | 980 | i, cur_subseq); |
474b62d6 | 981 | } |
42aa3418 MB |
982 | } |
983 | ||
97404f2e MB |
984 | static void dapm_widget_update(struct snd_soc_dapm_context *dapm) |
985 | { | |
986 | struct snd_soc_dapm_update *update = dapm->update; | |
987 | struct snd_soc_dapm_widget *w; | |
988 | int ret; | |
989 | ||
990 | if (!update) | |
991 | return; | |
992 | ||
993 | w = update->widget; | |
994 | ||
995 | if (w->event && | |
996 | (w->event_flags & SND_SOC_DAPM_PRE_REG)) { | |
997 | ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG); | |
998 | if (ret != 0) | |
999 | pr_err("%s DAPM pre-event failed: %d\n", | |
1000 | w->name, ret); | |
1001 | } | |
1002 | ||
1003 | ret = snd_soc_update_bits(w->codec, update->reg, update->mask, | |
1004 | update->val); | |
1005 | if (ret < 0) | |
1006 | pr_err("%s DAPM update failed: %d\n", w->name, ret); | |
1007 | ||
1008 | if (w->event && | |
1009 | (w->event_flags & SND_SOC_DAPM_POST_REG)) { | |
1010 | ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG); | |
1011 | if (ret != 0) | |
1012 | pr_err("%s DAPM post-event failed: %d\n", | |
1013 | w->name, ret); | |
1014 | } | |
1015 | } | |
1016 | ||
1017 | ||
1018 | ||
2b97eabc RP |
1019 | /* |
1020 | * Scan each dapm widget for complete audio path. | |
1021 | * A complete path is a route that has valid endpoints i.e.:- | |
1022 | * | |
1023 | * o DAC to output pin. | |
1024 | * o Input Pin to ADC. | |
1025 | * o Input pin to Output pin (bypass, sidetone) | |
1026 | * o DAC to ADC (loopback). | |
1027 | */ | |
ce6120cc | 1028 | static int dapm_power_widgets(struct snd_soc_dapm_context *dapm, int event) |
2b97eabc | 1029 | { |
ce6120cc | 1030 | struct snd_soc_card *card = dapm->codec->card; |
2b97eabc | 1031 | struct snd_soc_dapm_widget *w; |
7be31be8 | 1032 | struct snd_soc_dapm_context *d; |
291f3bbc MB |
1033 | LIST_HEAD(up_list); |
1034 | LIST_HEAD(down_list); | |
6d3ddc81 | 1035 | int ret = 0; |
38357ab2 | 1036 | int power; |
6d3ddc81 | 1037 | |
84e90930 MB |
1038 | trace_snd_soc_dapm_start(card); |
1039 | ||
7be31be8 JN |
1040 | list_for_each_entry(d, &card->dapm_list, list) |
1041 | if (d->n_widgets) | |
1042 | d->dev_power = 0; | |
1043 | ||
6d3ddc81 MB |
1044 | /* Check which widgets we need to power and store them in |
1045 | * lists indicating if they should be powered up or down. | |
1046 | */ | |
97c866de | 1047 | list_for_each_entry(w, &card->widgets, list) { |
6d3ddc81 MB |
1048 | switch (w->id) { |
1049 | case snd_soc_dapm_pre: | |
828a842f | 1050 | dapm_seq_insert(w, &down_list, false); |
6d3ddc81 MB |
1051 | break; |
1052 | case snd_soc_dapm_post: | |
828a842f | 1053 | dapm_seq_insert(w, &up_list, true); |
6d3ddc81 MB |
1054 | break; |
1055 | ||
1056 | default: | |
1057 | if (!w->power_check) | |
1058 | continue; | |
1059 | ||
9949788b | 1060 | if (!w->force) |
50b6bce5 | 1061 | power = w->power_check(w); |
9949788b MB |
1062 | else |
1063 | power = 1; | |
1064 | if (power) | |
7be31be8 | 1065 | w->dapm->dev_power = 1; |
452c5eaa | 1066 | |
6d3ddc81 MB |
1067 | if (w->power == power) |
1068 | continue; | |
1069 | ||
84e90930 MB |
1070 | trace_snd_soc_dapm_widget_power(w, power); |
1071 | ||
6d3ddc81 | 1072 | if (power) |
828a842f | 1073 | dapm_seq_insert(w, &up_list, true); |
6d3ddc81 | 1074 | else |
828a842f | 1075 | dapm_seq_insert(w, &down_list, false); |
6d3ddc81 MB |
1076 | |
1077 | w->power = power; | |
1078 | break; | |
1079 | } | |
2b97eabc RP |
1080 | } |
1081 | ||
b14b76a5 MB |
1082 | /* If there are no DAPM widgets then try to figure out power from the |
1083 | * event type. | |
1084 | */ | |
97c866de | 1085 | if (!dapm->n_widgets) { |
b14b76a5 MB |
1086 | switch (event) { |
1087 | case SND_SOC_DAPM_STREAM_START: | |
1088 | case SND_SOC_DAPM_STREAM_RESUME: | |
7be31be8 | 1089 | dapm->dev_power = 1; |
b14b76a5 | 1090 | break; |
862af8ad | 1091 | case SND_SOC_DAPM_STREAM_STOP: |
7be31be8 | 1092 | dapm->dev_power = !!dapm->codec->active; |
862af8ad | 1093 | break; |
50b6bce5 | 1094 | case SND_SOC_DAPM_STREAM_SUSPEND: |
7be31be8 | 1095 | dapm->dev_power = 0; |
50b6bce5 | 1096 | break; |
b14b76a5 | 1097 | case SND_SOC_DAPM_STREAM_NOP: |
ce6120cc | 1098 | switch (dapm->bias_level) { |
a96ca338 MB |
1099 | case SND_SOC_BIAS_STANDBY: |
1100 | case SND_SOC_BIAS_OFF: | |
7be31be8 | 1101 | dapm->dev_power = 0; |
a96ca338 MB |
1102 | break; |
1103 | default: | |
7be31be8 | 1104 | dapm->dev_power = 1; |
a96ca338 MB |
1105 | break; |
1106 | } | |
50b6bce5 | 1107 | break; |
b14b76a5 MB |
1108 | default: |
1109 | break; | |
1110 | } | |
1111 | } | |
1112 | ||
7be31be8 JN |
1113 | list_for_each_entry(d, &dapm->card->dapm_list, list) { |
1114 | if (d->dev_power && d->bias_level == SND_SOC_BIAS_OFF) { | |
1115 | ret = snd_soc_dapm_set_bias_level(card, d, | |
1116 | SND_SOC_BIAS_STANDBY); | |
1117 | if (ret != 0) | |
1118 | dev_err(d->dev, | |
1119 | "Failed to turn on bias: %d\n", ret); | |
1120 | } | |
a96ca338 | 1121 | |
7be31be8 JN |
1122 | /* If we're changing to all on or all off then prepare */ |
1123 | if ((d->dev_power && d->bias_level == SND_SOC_BIAS_STANDBY) || | |
1124 | (!d->dev_power && d->bias_level == SND_SOC_BIAS_ON)) { | |
1125 | ret = snd_soc_dapm_set_bias_level(card, d, | |
1126 | SND_SOC_BIAS_PREPARE); | |
1127 | if (ret != 0) | |
1128 | dev_err(d->dev, | |
1129 | "Failed to prepare bias: %d\n", ret); | |
1130 | } | |
452c5eaa MB |
1131 | } |
1132 | ||
6d3ddc81 | 1133 | /* Power down widgets first; try to avoid amplifying pops. */ |
828a842f | 1134 | dapm_seq_run(dapm, &down_list, event, false); |
2b97eabc | 1135 | |
97404f2e MB |
1136 | dapm_widget_update(dapm); |
1137 | ||
6d3ddc81 | 1138 | /* Now power up. */ |
828a842f | 1139 | dapm_seq_run(dapm, &up_list, event, true); |
2b97eabc | 1140 | |
7be31be8 JN |
1141 | list_for_each_entry(d, &dapm->card->dapm_list, list) { |
1142 | /* If we just powered the last thing off drop to standby bias */ | |
1143 | if (d->bias_level == SND_SOC_BIAS_PREPARE && !d->dev_power) { | |
1144 | ret = snd_soc_dapm_set_bias_level(card, d, | |
1145 | SND_SOC_BIAS_STANDBY); | |
1146 | if (ret != 0) | |
1147 | dev_err(d->dev, | |
1148 | "Failed to apply standby bias: %d\n", | |
1149 | ret); | |
1150 | } | |
452c5eaa | 1151 | |
7be31be8 JN |
1152 | /* If we're in standby and can support bias off then do that */ |
1153 | if (d->bias_level == SND_SOC_BIAS_STANDBY && | |
1154 | d->idle_bias_off) { | |
1155 | ret = snd_soc_dapm_set_bias_level(card, d, | |
1156 | SND_SOC_BIAS_OFF); | |
1157 | if (ret != 0) | |
1158 | dev_err(d->dev, | |
1159 | "Failed to turn off bias: %d\n", ret); | |
1160 | } | |
a96ca338 | 1161 | |
7be31be8 JN |
1162 | /* If we just powered up then move to active bias */ |
1163 | if (d->bias_level == SND_SOC_BIAS_PREPARE && d->dev_power) { | |
1164 | ret = snd_soc_dapm_set_bias_level(card, d, | |
1165 | SND_SOC_BIAS_ON); | |
1166 | if (ret != 0) | |
1167 | dev_err(d->dev, | |
1168 | "Failed to apply active bias: %d\n", | |
1169 | ret); | |
1170 | } | |
452c5eaa MB |
1171 | } |
1172 | ||
fd8d3bc0 JN |
1173 | pop_dbg(dapm->dev, card->pop_time, |
1174 | "DAPM sequencing finished, waiting %dms\n", card->pop_time); | |
3a45b867 | 1175 | pop_wait(card->pop_time); |
cb507e7e | 1176 | |
84e90930 MB |
1177 | trace_snd_soc_dapm_done(card); |
1178 | ||
42aa3418 | 1179 | return 0; |
2b97eabc RP |
1180 | } |
1181 | ||
79fb9387 MB |
1182 | #ifdef CONFIG_DEBUG_FS |
1183 | static int dapm_widget_power_open_file(struct inode *inode, struct file *file) | |
1184 | { | |
1185 | file->private_data = inode->i_private; | |
1186 | return 0; | |
1187 | } | |
1188 | ||
1189 | static ssize_t dapm_widget_power_read_file(struct file *file, | |
1190 | char __user *user_buf, | |
1191 | size_t count, loff_t *ppos) | |
1192 | { | |
1193 | struct snd_soc_dapm_widget *w = file->private_data; | |
1194 | char *buf; | |
1195 | int in, out; | |
1196 | ssize_t ret; | |
1197 | struct snd_soc_dapm_path *p = NULL; | |
1198 | ||
1199 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); | |
1200 | if (!buf) | |
1201 | return -ENOMEM; | |
1202 | ||
1203 | in = is_connected_input_ep(w); | |
ce6120cc | 1204 | dapm_clear_walk(w->dapm); |
79fb9387 | 1205 | out = is_connected_output_ep(w); |
ce6120cc | 1206 | dapm_clear_walk(w->dapm); |
79fb9387 | 1207 | |
d033c36a | 1208 | ret = snprintf(buf, PAGE_SIZE, "%s: %s in %d out %d", |
79fb9387 MB |
1209 | w->name, w->power ? "On" : "Off", in, out); |
1210 | ||
d033c36a MB |
1211 | if (w->reg >= 0) |
1212 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
1213 | " - R%d(0x%x) bit %d", | |
1214 | w->reg, w->reg, w->shift); | |
1215 | ||
1216 | ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n"); | |
1217 | ||
3eef08ba MB |
1218 | if (w->sname) |
1219 | ret += snprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n", | |
1220 | w->sname, | |
1221 | w->active ? "active" : "inactive"); | |
79fb9387 MB |
1222 | |
1223 | list_for_each_entry(p, &w->sources, list_sink) { | |
215edda3 MB |
1224 | if (p->connected && !p->connected(w, p->sink)) |
1225 | continue; | |
1226 | ||
79fb9387 MB |
1227 | if (p->connect) |
1228 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
1229 | " in %s %s\n", | |
1230 | p->name ? p->name : "static", | |
1231 | p->source->name); | |
1232 | } | |
1233 | list_for_each_entry(p, &w->sinks, list_source) { | |
215edda3 MB |
1234 | if (p->connected && !p->connected(w, p->sink)) |
1235 | continue; | |
1236 | ||
79fb9387 MB |
1237 | if (p->connect) |
1238 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
1239 | " out %s %s\n", | |
1240 | p->name ? p->name : "static", | |
1241 | p->sink->name); | |
1242 | } | |
1243 | ||
1244 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); | |
1245 | ||
1246 | kfree(buf); | |
1247 | return ret; | |
1248 | } | |
1249 | ||
1250 | static const struct file_operations dapm_widget_power_fops = { | |
1251 | .open = dapm_widget_power_open_file, | |
1252 | .read = dapm_widget_power_read_file, | |
6038f373 | 1253 | .llseek = default_llseek, |
79fb9387 MB |
1254 | }; |
1255 | ||
ce6120cc | 1256 | void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm) |
79fb9387 MB |
1257 | { |
1258 | struct snd_soc_dapm_widget *w; | |
1259 | struct dentry *d; | |
1260 | ||
ce6120cc | 1261 | if (!dapm->debugfs_dapm) |
79fb9387 MB |
1262 | return; |
1263 | ||
97c866de JN |
1264 | list_for_each_entry(w, &dapm->card->widgets, list) { |
1265 | if (!w->name || w->dapm != dapm) | |
79fb9387 MB |
1266 | continue; |
1267 | ||
1268 | d = debugfs_create_file(w->name, 0444, | |
ce6120cc | 1269 | dapm->debugfs_dapm, w, |
79fb9387 MB |
1270 | &dapm_widget_power_fops); |
1271 | if (!d) | |
f7d41ae8 JN |
1272 | dev_warn(w->dapm->dev, |
1273 | "ASoC: Failed to create %s debugfs file\n", | |
1274 | w->name); | |
79fb9387 MB |
1275 | } |
1276 | } | |
1277 | #else | |
ce6120cc | 1278 | void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm) |
79fb9387 MB |
1279 | { |
1280 | } | |
1281 | #endif | |
1282 | ||
2b97eabc | 1283 | /* test and update the power status of a mux widget */ |
d9c96cf3 | 1284 | static int dapm_mux_update_power(struct snd_soc_dapm_widget *widget, |
3a65577d MB |
1285 | struct snd_kcontrol *kcontrol, int change, |
1286 | int mux, struct soc_enum *e) | |
2b97eabc RP |
1287 | { |
1288 | struct snd_soc_dapm_path *path; | |
1289 | int found = 0; | |
1290 | ||
eff317d0 | 1291 | if (widget->id != snd_soc_dapm_mux && |
24ff33ac | 1292 | widget->id != snd_soc_dapm_virt_mux && |
eff317d0 | 1293 | widget->id != snd_soc_dapm_value_mux) |
2b97eabc RP |
1294 | return -ENODEV; |
1295 | ||
3a65577d | 1296 | if (!change) |
2b97eabc RP |
1297 | return 0; |
1298 | ||
1299 | /* find dapm widget path assoc with kcontrol */ | |
8ddab3f5 | 1300 | list_for_each_entry(path, &widget->dapm->card->paths, list) { |
2b97eabc RP |
1301 | if (path->kcontrol != kcontrol) |
1302 | continue; | |
1303 | ||
cb01e2b9 | 1304 | if (!path->name || !e->texts[mux]) |
2b97eabc RP |
1305 | continue; |
1306 | ||
1307 | found = 1; | |
1308 | /* we now need to match the string in the enum to the path */ | |
cb01e2b9 | 1309 | if (!(strcmp(path->name, e->texts[mux]))) |
2b97eabc RP |
1310 | path->connect = 1; /* new connection */ |
1311 | else | |
1312 | path->connect = 0; /* old connection must be powered down */ | |
1313 | } | |
1314 | ||
b91b8fa0 | 1315 | if (found) |
ce6120cc | 1316 | dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc RP |
1317 | |
1318 | return 0; | |
1319 | } | |
2b97eabc | 1320 | |
1b075e3f | 1321 | /* test and update the power status of a mixer or switch widget */ |
d9c96cf3 | 1322 | static int dapm_mixer_update_power(struct snd_soc_dapm_widget *widget, |
283375ce | 1323 | struct snd_kcontrol *kcontrol, int connect) |
2b97eabc RP |
1324 | { |
1325 | struct snd_soc_dapm_path *path; | |
1326 | int found = 0; | |
1327 | ||
1b075e3f | 1328 | if (widget->id != snd_soc_dapm_mixer && |
ca9c1aae | 1329 | widget->id != snd_soc_dapm_mixer_named_ctl && |
1b075e3f | 1330 | widget->id != snd_soc_dapm_switch) |
2b97eabc RP |
1331 | return -ENODEV; |
1332 | ||
2b97eabc | 1333 | /* find dapm widget path assoc with kcontrol */ |
8ddab3f5 | 1334 | list_for_each_entry(path, &widget->dapm->card->paths, list) { |
2b97eabc RP |
1335 | if (path->kcontrol != kcontrol) |
1336 | continue; | |
1337 | ||
1338 | /* found, now check type */ | |
1339 | found = 1; | |
283375ce | 1340 | path->connect = connect; |
2b97eabc RP |
1341 | break; |
1342 | } | |
1343 | ||
b91b8fa0 | 1344 | if (found) |
ce6120cc | 1345 | dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc RP |
1346 | |
1347 | return 0; | |
1348 | } | |
2b97eabc RP |
1349 | |
1350 | /* show dapm widget status in sys fs */ | |
1351 | static ssize_t dapm_widget_show(struct device *dev, | |
1352 | struct device_attribute *attr, char *buf) | |
1353 | { | |
f0fba2ad LG |
1354 | struct snd_soc_pcm_runtime *rtd = |
1355 | container_of(dev, struct snd_soc_pcm_runtime, dev); | |
1356 | struct snd_soc_codec *codec =rtd->codec; | |
2b97eabc RP |
1357 | struct snd_soc_dapm_widget *w; |
1358 | int count = 0; | |
1359 | char *state = "not set"; | |
1360 | ||
97c866de JN |
1361 | list_for_each_entry(w, &codec->card->widgets, list) { |
1362 | if (w->dapm != &codec->dapm) | |
1363 | continue; | |
2b97eabc RP |
1364 | |
1365 | /* only display widgets that burnm power */ | |
1366 | switch (w->id) { | |
1367 | case snd_soc_dapm_hp: | |
1368 | case snd_soc_dapm_mic: | |
1369 | case snd_soc_dapm_spk: | |
1370 | case snd_soc_dapm_line: | |
1371 | case snd_soc_dapm_micbias: | |
1372 | case snd_soc_dapm_dac: | |
1373 | case snd_soc_dapm_adc: | |
1374 | case snd_soc_dapm_pga: | |
d88429a6 | 1375 | case snd_soc_dapm_out_drv: |
2b97eabc | 1376 | case snd_soc_dapm_mixer: |
ca9c1aae | 1377 | case snd_soc_dapm_mixer_named_ctl: |
246d0a17 | 1378 | case snd_soc_dapm_supply: |
2b97eabc RP |
1379 | if (w->name) |
1380 | count += sprintf(buf + count, "%s: %s\n", | |
1381 | w->name, w->power ? "On":"Off"); | |
1382 | break; | |
1383 | default: | |
1384 | break; | |
1385 | } | |
1386 | } | |
1387 | ||
ce6120cc | 1388 | switch (codec->dapm.bias_level) { |
0be9898a MB |
1389 | case SND_SOC_BIAS_ON: |
1390 | state = "On"; | |
2b97eabc | 1391 | break; |
0be9898a MB |
1392 | case SND_SOC_BIAS_PREPARE: |
1393 | state = "Prepare"; | |
2b97eabc | 1394 | break; |
0be9898a MB |
1395 | case SND_SOC_BIAS_STANDBY: |
1396 | state = "Standby"; | |
2b97eabc | 1397 | break; |
0be9898a MB |
1398 | case SND_SOC_BIAS_OFF: |
1399 | state = "Off"; | |
2b97eabc RP |
1400 | break; |
1401 | } | |
1402 | count += sprintf(buf + count, "PM State: %s\n", state); | |
1403 | ||
1404 | return count; | |
1405 | } | |
1406 | ||
1407 | static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL); | |
1408 | ||
1409 | int snd_soc_dapm_sys_add(struct device *dev) | |
1410 | { | |
12ef193d | 1411 | return device_create_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1412 | } |
1413 | ||
1414 | static void snd_soc_dapm_sys_remove(struct device *dev) | |
1415 | { | |
aef90843 | 1416 | device_remove_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1417 | } |
1418 | ||
1419 | /* free all dapm widgets and resources */ | |
ce6120cc | 1420 | static void dapm_free_widgets(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
1421 | { |
1422 | struct snd_soc_dapm_widget *w, *next_w; | |
1423 | struct snd_soc_dapm_path *p, *next_p; | |
1424 | ||
97c866de JN |
1425 | list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) { |
1426 | if (w->dapm != dapm) | |
1427 | continue; | |
2b97eabc | 1428 | list_del(&w->list); |
8ddab3f5 JN |
1429 | /* |
1430 | * remove source and sink paths associated to this widget. | |
1431 | * While removing the path, remove reference to it from both | |
1432 | * source and sink widgets so that path is removed only once. | |
1433 | */ | |
1434 | list_for_each_entry_safe(p, next_p, &w->sources, list_sink) { | |
1435 | list_del(&p->list_sink); | |
1436 | list_del(&p->list_source); | |
1437 | list_del(&p->list); | |
1438 | kfree(p->long_name); | |
1439 | kfree(p); | |
1440 | } | |
1441 | list_for_each_entry_safe(p, next_p, &w->sinks, list_source) { | |
1442 | list_del(&p->list_sink); | |
1443 | list_del(&p->list_source); | |
1444 | list_del(&p->list); | |
1445 | kfree(p->long_name); | |
1446 | kfree(p); | |
1447 | } | |
ead9b919 | 1448 | kfree(w->name); |
2b97eabc RP |
1449 | kfree(w); |
1450 | } | |
2b97eabc RP |
1451 | } |
1452 | ||
ce6120cc | 1453 | static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm, |
1649923d | 1454 | const char *pin, int status) |
a5302181 LG |
1455 | { |
1456 | struct snd_soc_dapm_widget *w; | |
1457 | ||
97c866de JN |
1458 | list_for_each_entry(w, &dapm->card->widgets, list) { |
1459 | if (w->dapm != dapm) | |
1460 | continue; | |
a5302181 | 1461 | if (!strcmp(w->name, pin)) { |
f7d41ae8 JN |
1462 | dev_dbg(w->dapm->dev, "dapm: pin %s = %d\n", |
1463 | pin, status); | |
a5302181 | 1464 | w->connected = status; |
5b9e87cc MB |
1465 | /* Allow disabling of forced pins */ |
1466 | if (status == 0) | |
1467 | w->force = 0; | |
a5302181 LG |
1468 | return 0; |
1469 | } | |
1470 | } | |
1471 | ||
f7d41ae8 | 1472 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); |
a5302181 LG |
1473 | return -EINVAL; |
1474 | } | |
1475 | ||
2b97eabc | 1476 | /** |
a5302181 | 1477 | * snd_soc_dapm_sync - scan and power dapm paths |
ce6120cc | 1478 | * @dapm: DAPM context |
2b97eabc RP |
1479 | * |
1480 | * Walks all dapm audio paths and powers widgets according to their | |
1481 | * stream or path usage. | |
1482 | * | |
1483 | * Returns 0 for success. | |
1484 | */ | |
ce6120cc | 1485 | int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm) |
2b97eabc | 1486 | { |
ce6120cc | 1487 | return dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc | 1488 | } |
a5302181 | 1489 | EXPORT_SYMBOL_GPL(snd_soc_dapm_sync); |
2b97eabc | 1490 | |
ce6120cc | 1491 | static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm, |
215edda3 | 1492 | const struct snd_soc_dapm_route *route) |
2b97eabc RP |
1493 | { |
1494 | struct snd_soc_dapm_path *path; | |
1495 | struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w; | |
97c866de | 1496 | struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL; |
ead9b919 | 1497 | const char *sink; |
215edda3 | 1498 | const char *control = route->control; |
ead9b919 JN |
1499 | const char *source; |
1500 | char prefixed_sink[80]; | |
1501 | char prefixed_source[80]; | |
2b97eabc RP |
1502 | int ret = 0; |
1503 | ||
ead9b919 JN |
1504 | if (dapm->codec->name_prefix) { |
1505 | snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s", | |
1506 | dapm->codec->name_prefix, route->sink); | |
1507 | sink = prefixed_sink; | |
1508 | snprintf(prefixed_source, sizeof(prefixed_source), "%s %s", | |
1509 | dapm->codec->name_prefix, route->source); | |
1510 | source = prefixed_source; | |
1511 | } else { | |
1512 | sink = route->sink; | |
1513 | source = route->source; | |
1514 | } | |
1515 | ||
97c866de JN |
1516 | /* |
1517 | * find src and dest widgets over all widgets but favor a widget from | |
1518 | * current DAPM context | |
1519 | */ | |
1520 | list_for_each_entry(w, &dapm->card->widgets, list) { | |
2b97eabc | 1521 | if (!wsink && !(strcmp(w->name, sink))) { |
97c866de JN |
1522 | wtsink = w; |
1523 | if (w->dapm == dapm) | |
1524 | wsink = w; | |
2b97eabc RP |
1525 | continue; |
1526 | } | |
1527 | if (!wsource && !(strcmp(w->name, source))) { | |
97c866de JN |
1528 | wtsource = w; |
1529 | if (w->dapm == dapm) | |
1530 | wsource = w; | |
2b97eabc RP |
1531 | } |
1532 | } | |
97c866de JN |
1533 | /* use widget from another DAPM context if not found from this */ |
1534 | if (!wsink) | |
1535 | wsink = wtsink; | |
1536 | if (!wsource) | |
1537 | wsource = wtsource; | |
2b97eabc RP |
1538 | |
1539 | if (wsource == NULL || wsink == NULL) | |
1540 | return -ENODEV; | |
1541 | ||
1542 | path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL); | |
1543 | if (!path) | |
1544 | return -ENOMEM; | |
1545 | ||
1546 | path->source = wsource; | |
1547 | path->sink = wsink; | |
215edda3 | 1548 | path->connected = route->connected; |
2b97eabc RP |
1549 | INIT_LIST_HEAD(&path->list); |
1550 | INIT_LIST_HEAD(&path->list_source); | |
1551 | INIT_LIST_HEAD(&path->list_sink); | |
1552 | ||
1553 | /* check for external widgets */ | |
1554 | if (wsink->id == snd_soc_dapm_input) { | |
1555 | if (wsource->id == snd_soc_dapm_micbias || | |
1556 | wsource->id == snd_soc_dapm_mic || | |
087d53ab RC |
1557 | wsource->id == snd_soc_dapm_line || |
1558 | wsource->id == snd_soc_dapm_output) | |
2b97eabc RP |
1559 | wsink->ext = 1; |
1560 | } | |
1561 | if (wsource->id == snd_soc_dapm_output) { | |
1562 | if (wsink->id == snd_soc_dapm_spk || | |
1563 | wsink->id == snd_soc_dapm_hp || | |
1e39221e SF |
1564 | wsink->id == snd_soc_dapm_line || |
1565 | wsink->id == snd_soc_dapm_input) | |
2b97eabc RP |
1566 | wsource->ext = 1; |
1567 | } | |
1568 | ||
1569 | /* connect static paths */ | |
1570 | if (control == NULL) { | |
8ddab3f5 | 1571 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
1572 | list_add(&path->list_sink, &wsink->sources); |
1573 | list_add(&path->list_source, &wsource->sinks); | |
1574 | path->connect = 1; | |
1575 | return 0; | |
1576 | } | |
1577 | ||
1578 | /* connect dynamic paths */ | |
1579 | switch(wsink->id) { | |
1580 | case snd_soc_dapm_adc: | |
1581 | case snd_soc_dapm_dac: | |
1582 | case snd_soc_dapm_pga: | |
d88429a6 | 1583 | case snd_soc_dapm_out_drv: |
2b97eabc RP |
1584 | case snd_soc_dapm_input: |
1585 | case snd_soc_dapm_output: | |
1586 | case snd_soc_dapm_micbias: | |
1587 | case snd_soc_dapm_vmid: | |
1588 | case snd_soc_dapm_pre: | |
1589 | case snd_soc_dapm_post: | |
246d0a17 | 1590 | case snd_soc_dapm_supply: |
010ff262 MB |
1591 | case snd_soc_dapm_aif_in: |
1592 | case snd_soc_dapm_aif_out: | |
8ddab3f5 | 1593 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
1594 | list_add(&path->list_sink, &wsink->sources); |
1595 | list_add(&path->list_source, &wsource->sinks); | |
1596 | path->connect = 1; | |
1597 | return 0; | |
1598 | case snd_soc_dapm_mux: | |
24ff33ac | 1599 | case snd_soc_dapm_virt_mux: |
74155556 | 1600 | case snd_soc_dapm_value_mux: |
ce6120cc | 1601 | ret = dapm_connect_mux(dapm, wsource, wsink, path, control, |
2b97eabc RP |
1602 | &wsink->kcontrols[0]); |
1603 | if (ret != 0) | |
1604 | goto err; | |
1605 | break; | |
1606 | case snd_soc_dapm_switch: | |
1607 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1608 | case snd_soc_dapm_mixer_named_ctl: |
ce6120cc | 1609 | ret = dapm_connect_mixer(dapm, wsource, wsink, path, control); |
2b97eabc RP |
1610 | if (ret != 0) |
1611 | goto err; | |
1612 | break; | |
1613 | case snd_soc_dapm_hp: | |
1614 | case snd_soc_dapm_mic: | |
1615 | case snd_soc_dapm_line: | |
1616 | case snd_soc_dapm_spk: | |
8ddab3f5 | 1617 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
1618 | list_add(&path->list_sink, &wsink->sources); |
1619 | list_add(&path->list_source, &wsource->sinks); | |
1620 | path->connect = 0; | |
1621 | return 0; | |
1622 | } | |
1623 | return 0; | |
1624 | ||
1625 | err: | |
f7d41ae8 JN |
1626 | dev_warn(dapm->dev, "asoc: no dapm match for %s --> %s --> %s\n", |
1627 | source, control, sink); | |
2b97eabc RP |
1628 | kfree(path); |
1629 | return ret; | |
1630 | } | |
105f1c28 | 1631 | |
105f1c28 MB |
1632 | /** |
1633 | * snd_soc_dapm_add_routes - Add routes between DAPM widgets | |
ce6120cc | 1634 | * @dapm: DAPM context |
105f1c28 MB |
1635 | * @route: audio routes |
1636 | * @num: number of routes | |
1637 | * | |
1638 | * Connects 2 dapm widgets together via a named audio path. The sink is | |
1639 | * the widget receiving the audio signal, whilst the source is the sender | |
1640 | * of the audio signal. | |
1641 | * | |
1642 | * Returns 0 for success else error. On error all resources can be freed | |
1643 | * with a call to snd_soc_card_free(). | |
1644 | */ | |
ce6120cc | 1645 | int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm, |
105f1c28 MB |
1646 | const struct snd_soc_dapm_route *route, int num) |
1647 | { | |
1648 | int i, ret; | |
1649 | ||
1650 | for (i = 0; i < num; i++) { | |
ce6120cc | 1651 | ret = snd_soc_dapm_add_route(dapm, route); |
105f1c28 | 1652 | if (ret < 0) { |
f7d41ae8 JN |
1653 | dev_err(dapm->dev, "Failed to add route %s->%s\n", |
1654 | route->source, route->sink); | |
105f1c28 MB |
1655 | return ret; |
1656 | } | |
1657 | route++; | |
1658 | } | |
1659 | ||
1660 | return 0; | |
1661 | } | |
1662 | EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes); | |
1663 | ||
2b97eabc RP |
1664 | /** |
1665 | * snd_soc_dapm_new_widgets - add new dapm widgets | |
ce6120cc | 1666 | * @dapm: DAPM context |
2b97eabc RP |
1667 | * |
1668 | * Checks the codec for any new dapm widgets and creates them if found. | |
1669 | * | |
1670 | * Returns 0 for success. | |
1671 | */ | |
ce6120cc | 1672 | int snd_soc_dapm_new_widgets(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
1673 | { |
1674 | struct snd_soc_dapm_widget *w; | |
b66a70d5 | 1675 | unsigned int val; |
2b97eabc | 1676 | |
97c866de | 1677 | list_for_each_entry(w, &dapm->card->widgets, list) |
2b97eabc RP |
1678 | { |
1679 | if (w->new) | |
1680 | continue; | |
1681 | ||
1682 | switch(w->id) { | |
1683 | case snd_soc_dapm_switch: | |
1684 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1685 | case snd_soc_dapm_mixer_named_ctl: |
b75576d7 | 1686 | w->power_check = dapm_generic_check_power; |
ce6120cc | 1687 | dapm_new_mixer(dapm, w); |
2b97eabc RP |
1688 | break; |
1689 | case snd_soc_dapm_mux: | |
24ff33ac | 1690 | case snd_soc_dapm_virt_mux: |
2e72f8e3 | 1691 | case snd_soc_dapm_value_mux: |
b75576d7 | 1692 | w->power_check = dapm_generic_check_power; |
ce6120cc | 1693 | dapm_new_mux(dapm, w); |
2b97eabc RP |
1694 | break; |
1695 | case snd_soc_dapm_adc: | |
010ff262 | 1696 | case snd_soc_dapm_aif_out: |
b75576d7 MB |
1697 | w->power_check = dapm_adc_check_power; |
1698 | break; | |
2b97eabc | 1699 | case snd_soc_dapm_dac: |
010ff262 | 1700 | case snd_soc_dapm_aif_in: |
b75576d7 MB |
1701 | w->power_check = dapm_dac_check_power; |
1702 | break; | |
2b97eabc | 1703 | case snd_soc_dapm_pga: |
d88429a6 | 1704 | case snd_soc_dapm_out_drv: |
b75576d7 | 1705 | w->power_check = dapm_generic_check_power; |
ce6120cc | 1706 | dapm_new_pga(dapm, w); |
2b97eabc RP |
1707 | break; |
1708 | case snd_soc_dapm_input: | |
1709 | case snd_soc_dapm_output: | |
1710 | case snd_soc_dapm_micbias: | |
1711 | case snd_soc_dapm_spk: | |
1712 | case snd_soc_dapm_hp: | |
1713 | case snd_soc_dapm_mic: | |
1714 | case snd_soc_dapm_line: | |
b75576d7 MB |
1715 | w->power_check = dapm_generic_check_power; |
1716 | break; | |
246d0a17 MB |
1717 | case snd_soc_dapm_supply: |
1718 | w->power_check = dapm_supply_check_power; | |
2b97eabc RP |
1719 | case snd_soc_dapm_vmid: |
1720 | case snd_soc_dapm_pre: | |
1721 | case snd_soc_dapm_post: | |
1722 | break; | |
1723 | } | |
b66a70d5 MB |
1724 | |
1725 | /* Read the initial power state from the device */ | |
1726 | if (w->reg >= 0) { | |
1727 | val = snd_soc_read(w->codec, w->reg); | |
1728 | val &= 1 << w->shift; | |
1729 | if (w->invert) | |
1730 | val = !val; | |
1731 | ||
1732 | if (val) | |
1733 | w->power = 1; | |
1734 | } | |
1735 | ||
2b97eabc RP |
1736 | w->new = 1; |
1737 | } | |
1738 | ||
ce6120cc | 1739 | dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc RP |
1740 | return 0; |
1741 | } | |
1742 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets); | |
1743 | ||
1744 | /** | |
1745 | * snd_soc_dapm_get_volsw - dapm mixer get callback | |
1746 | * @kcontrol: mixer control | |
ac11a2b3 | 1747 | * @ucontrol: control element information |
2b97eabc RP |
1748 | * |
1749 | * Callback to get the value of a dapm mixer control. | |
1750 | * | |
1751 | * Returns 0 for success. | |
1752 | */ | |
1753 | int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol, | |
1754 | struct snd_ctl_elem_value *ucontrol) | |
1755 | { | |
1756 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
4eaa9819 JS |
1757 | struct soc_mixer_control *mc = |
1758 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
1759 | unsigned int reg = mc->reg; |
1760 | unsigned int shift = mc->shift; | |
1761 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1762 | int max = mc->max; |
815ecf8d JS |
1763 | unsigned int invert = mc->invert; |
1764 | unsigned int mask = (1 << fls(max)) - 1; | |
2b97eabc | 1765 | |
2b97eabc RP |
1766 | ucontrol->value.integer.value[0] = |
1767 | (snd_soc_read(widget->codec, reg) >> shift) & mask; | |
1768 | if (shift != rshift) | |
1769 | ucontrol->value.integer.value[1] = | |
1770 | (snd_soc_read(widget->codec, reg) >> rshift) & mask; | |
1771 | if (invert) { | |
1772 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1773 | max - ucontrol->value.integer.value[0]; |
2b97eabc RP |
1774 | if (shift != rshift) |
1775 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 1776 | max - ucontrol->value.integer.value[1]; |
2b97eabc RP |
1777 | } |
1778 | ||
1779 | return 0; | |
1780 | } | |
1781 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw); | |
1782 | ||
1783 | /** | |
1784 | * snd_soc_dapm_put_volsw - dapm mixer set callback | |
1785 | * @kcontrol: mixer control | |
ac11a2b3 | 1786 | * @ucontrol: control element information |
2b97eabc RP |
1787 | * |
1788 | * Callback to set the value of a dapm mixer control. | |
1789 | * | |
1790 | * Returns 0 for success. | |
1791 | */ | |
1792 | int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, | |
1793 | struct snd_ctl_elem_value *ucontrol) | |
1794 | { | |
1795 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
4eaa9819 JS |
1796 | struct soc_mixer_control *mc = |
1797 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
1798 | unsigned int reg = mc->reg; |
1799 | unsigned int shift = mc->shift; | |
4eaa9819 | 1800 | int max = mc->max; |
815ecf8d JS |
1801 | unsigned int mask = (1 << fls(max)) - 1; |
1802 | unsigned int invert = mc->invert; | |
e9cf7049 | 1803 | unsigned int val; |
97404f2e MB |
1804 | int connect, change; |
1805 | struct snd_soc_dapm_update update; | |
2b97eabc RP |
1806 | |
1807 | val = (ucontrol->value.integer.value[0] & mask); | |
1808 | ||
1809 | if (invert) | |
a7a4ac86 | 1810 | val = max - val; |
e9cf7049 | 1811 | mask = mask << shift; |
2b97eabc | 1812 | val = val << shift; |
2b97eabc RP |
1813 | |
1814 | mutex_lock(&widget->codec->mutex); | |
1815 | widget->value = val; | |
1816 | ||
e9cf7049 | 1817 | change = snd_soc_test_bits(widget->codec, reg, mask, val); |
97404f2e | 1818 | if (change) { |
283375ce MB |
1819 | if (val) |
1820 | /* new connection */ | |
1821 | connect = invert ? 0:1; | |
1822 | else | |
1823 | /* old connection must be powered down */ | |
1824 | connect = invert ? 1:0; | |
1825 | ||
97404f2e MB |
1826 | update.kcontrol = kcontrol; |
1827 | update.widget = widget; | |
1828 | update.reg = reg; | |
1829 | update.mask = mask; | |
1830 | update.val = val; | |
1831 | widget->dapm->update = &update; | |
1832 | ||
283375ce | 1833 | dapm_mixer_update_power(widget, kcontrol, connect); |
97404f2e MB |
1834 | |
1835 | widget->dapm->update = NULL; | |
283375ce MB |
1836 | } |
1837 | ||
2b97eabc | 1838 | mutex_unlock(&widget->codec->mutex); |
97404f2e | 1839 | return 0; |
2b97eabc RP |
1840 | } |
1841 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw); | |
1842 | ||
1843 | /** | |
1844 | * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback | |
1845 | * @kcontrol: mixer control | |
ac11a2b3 | 1846 | * @ucontrol: control element information |
2b97eabc RP |
1847 | * |
1848 | * Callback to get the value of a dapm enumerated double mixer control. | |
1849 | * | |
1850 | * Returns 0 for success. | |
1851 | */ | |
1852 | int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol, | |
1853 | struct snd_ctl_elem_value *ucontrol) | |
1854 | { | |
1855 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1856 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
46f5822f | 1857 | unsigned int val, bitmask; |
2b97eabc | 1858 | |
f8ba0b7b | 1859 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
1860 | ; |
1861 | val = snd_soc_read(widget->codec, e->reg); | |
1862 | ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1); | |
1863 | if (e->shift_l != e->shift_r) | |
1864 | ucontrol->value.enumerated.item[1] = | |
1865 | (val >> e->shift_r) & (bitmask - 1); | |
1866 | ||
1867 | return 0; | |
1868 | } | |
1869 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double); | |
1870 | ||
1871 | /** | |
1872 | * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback | |
1873 | * @kcontrol: mixer control | |
ac11a2b3 | 1874 | * @ucontrol: control element information |
2b97eabc RP |
1875 | * |
1876 | * Callback to set the value of a dapm enumerated double mixer control. | |
1877 | * | |
1878 | * Returns 0 for success. | |
1879 | */ | |
1880 | int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, | |
1881 | struct snd_ctl_elem_value *ucontrol) | |
1882 | { | |
1883 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1884 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
3a65577d | 1885 | unsigned int val, mux, change; |
46f5822f | 1886 | unsigned int mask, bitmask; |
97404f2e | 1887 | struct snd_soc_dapm_update update; |
2b97eabc | 1888 | |
f8ba0b7b | 1889 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc | 1890 | ; |
f8ba0b7b | 1891 | if (ucontrol->value.enumerated.item[0] > e->max - 1) |
2b97eabc RP |
1892 | return -EINVAL; |
1893 | mux = ucontrol->value.enumerated.item[0]; | |
1894 | val = mux << e->shift_l; | |
1895 | mask = (bitmask - 1) << e->shift_l; | |
1896 | if (e->shift_l != e->shift_r) { | |
f8ba0b7b | 1897 | if (ucontrol->value.enumerated.item[1] > e->max - 1) |
2b97eabc RP |
1898 | return -EINVAL; |
1899 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
1900 | mask |= (bitmask - 1) << e->shift_r; | |
1901 | } | |
1902 | ||
1903 | mutex_lock(&widget->codec->mutex); | |
1904 | widget->value = val; | |
3a65577d | 1905 | change = snd_soc_test_bits(widget->codec, e->reg, mask, val); |
1642e3d4 | 1906 | |
97404f2e MB |
1907 | update.kcontrol = kcontrol; |
1908 | update.widget = widget; | |
1909 | update.reg = e->reg; | |
1910 | update.mask = mask; | |
1911 | update.val = val; | |
1912 | widget->dapm->update = &update; | |
1642e3d4 | 1913 | |
97404f2e | 1914 | dapm_mux_update_power(widget, kcontrol, change, mux, e); |
1642e3d4 | 1915 | |
97404f2e | 1916 | widget->dapm->update = NULL; |
2b97eabc | 1917 | |
2b97eabc | 1918 | mutex_unlock(&widget->codec->mutex); |
97404f2e | 1919 | return change; |
2b97eabc RP |
1920 | } |
1921 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double); | |
1922 | ||
d2b247a8 MB |
1923 | /** |
1924 | * snd_soc_dapm_get_enum_virt - Get virtual DAPM mux | |
1925 | * @kcontrol: mixer control | |
1926 | * @ucontrol: control element information | |
1927 | * | |
1928 | * Returns 0 for success. | |
1929 | */ | |
1930 | int snd_soc_dapm_get_enum_virt(struct snd_kcontrol *kcontrol, | |
1931 | struct snd_ctl_elem_value *ucontrol) | |
1932 | { | |
1933 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1934 | ||
1935 | ucontrol->value.enumerated.item[0] = widget->value; | |
1936 | ||
1937 | return 0; | |
1938 | } | |
1939 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_virt); | |
1940 | ||
1941 | /** | |
1942 | * snd_soc_dapm_put_enum_virt - Set virtual DAPM mux | |
1943 | * @kcontrol: mixer control | |
1944 | * @ucontrol: control element information | |
1945 | * | |
1946 | * Returns 0 for success. | |
1947 | */ | |
1948 | int snd_soc_dapm_put_enum_virt(struct snd_kcontrol *kcontrol, | |
1949 | struct snd_ctl_elem_value *ucontrol) | |
1950 | { | |
1951 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1952 | struct soc_enum *e = | |
1953 | (struct soc_enum *)kcontrol->private_value; | |
1954 | int change; | |
1955 | int ret = 0; | |
1956 | ||
1957 | if (ucontrol->value.enumerated.item[0] >= e->max) | |
1958 | return -EINVAL; | |
1959 | ||
1960 | mutex_lock(&widget->codec->mutex); | |
1961 | ||
1962 | change = widget->value != ucontrol->value.enumerated.item[0]; | |
1963 | widget->value = ucontrol->value.enumerated.item[0]; | |
1964 | dapm_mux_update_power(widget, kcontrol, change, widget->value, e); | |
1965 | ||
1966 | mutex_unlock(&widget->codec->mutex); | |
1967 | return ret; | |
1968 | } | |
1969 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt); | |
1970 | ||
2e72f8e3 PU |
1971 | /** |
1972 | * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get | |
1973 | * callback | |
1974 | * @kcontrol: mixer control | |
1975 | * @ucontrol: control element information | |
1976 | * | |
1977 | * Callback to get the value of a dapm semi enumerated double mixer control. | |
1978 | * | |
1979 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
1980 | * used for handling bitfield coded enumeration for example. | |
1981 | * | |
1982 | * Returns 0 for success. | |
1983 | */ | |
1984 | int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol *kcontrol, | |
1985 | struct snd_ctl_elem_value *ucontrol) | |
1986 | { | |
1987 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
74155556 | 1988 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f | 1989 | unsigned int reg_val, val, mux; |
2e72f8e3 PU |
1990 | |
1991 | reg_val = snd_soc_read(widget->codec, e->reg); | |
1992 | val = (reg_val >> e->shift_l) & e->mask; | |
1993 | for (mux = 0; mux < e->max; mux++) { | |
1994 | if (val == e->values[mux]) | |
1995 | break; | |
1996 | } | |
1997 | ucontrol->value.enumerated.item[0] = mux; | |
1998 | if (e->shift_l != e->shift_r) { | |
1999 | val = (reg_val >> e->shift_r) & e->mask; | |
2000 | for (mux = 0; mux < e->max; mux++) { | |
2001 | if (val == e->values[mux]) | |
2002 | break; | |
2003 | } | |
2004 | ucontrol->value.enumerated.item[1] = mux; | |
2005 | } | |
2006 | ||
2007 | return 0; | |
2008 | } | |
2009 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double); | |
2010 | ||
2011 | /** | |
2012 | * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set | |
2013 | * callback | |
2014 | * @kcontrol: mixer control | |
2015 | * @ucontrol: control element information | |
2016 | * | |
2017 | * Callback to set the value of a dapm semi enumerated double mixer control. | |
2018 | * | |
2019 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
2020 | * used for handling bitfield coded enumeration for example. | |
2021 | * | |
2022 | * Returns 0 for success. | |
2023 | */ | |
2024 | int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol, | |
2025 | struct snd_ctl_elem_value *ucontrol) | |
2026 | { | |
2027 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
74155556 | 2028 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
3a65577d | 2029 | unsigned int val, mux, change; |
46f5822f | 2030 | unsigned int mask; |
97404f2e | 2031 | struct snd_soc_dapm_update update; |
2e72f8e3 PU |
2032 | |
2033 | if (ucontrol->value.enumerated.item[0] > e->max - 1) | |
2034 | return -EINVAL; | |
2035 | mux = ucontrol->value.enumerated.item[0]; | |
2036 | val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l; | |
2037 | mask = e->mask << e->shift_l; | |
2038 | if (e->shift_l != e->shift_r) { | |
2039 | if (ucontrol->value.enumerated.item[1] > e->max - 1) | |
2040 | return -EINVAL; | |
2041 | val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r; | |
2042 | mask |= e->mask << e->shift_r; | |
2043 | } | |
2044 | ||
2045 | mutex_lock(&widget->codec->mutex); | |
2046 | widget->value = val; | |
3a65577d | 2047 | change = snd_soc_test_bits(widget->codec, e->reg, mask, val); |
1642e3d4 | 2048 | |
97404f2e MB |
2049 | update.kcontrol = kcontrol; |
2050 | update.widget = widget; | |
2051 | update.reg = e->reg; | |
2052 | update.mask = mask; | |
2053 | update.val = val; | |
2054 | widget->dapm->update = &update; | |
1642e3d4 | 2055 | |
97404f2e | 2056 | dapm_mux_update_power(widget, kcontrol, change, mux, e); |
1642e3d4 | 2057 | |
97404f2e | 2058 | widget->dapm->update = NULL; |
2e72f8e3 | 2059 | |
2e72f8e3 | 2060 | mutex_unlock(&widget->codec->mutex); |
97404f2e | 2061 | return change; |
2e72f8e3 PU |
2062 | } |
2063 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double); | |
2064 | ||
8b37dbd2 MB |
2065 | /** |
2066 | * snd_soc_dapm_info_pin_switch - Info for a pin switch | |
2067 | * | |
2068 | * @kcontrol: mixer control | |
2069 | * @uinfo: control element information | |
2070 | * | |
2071 | * Callback to provide information about a pin switch control. | |
2072 | */ | |
2073 | int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol, | |
2074 | struct snd_ctl_elem_info *uinfo) | |
2075 | { | |
2076 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
2077 | uinfo->count = 1; | |
2078 | uinfo->value.integer.min = 0; | |
2079 | uinfo->value.integer.max = 1; | |
2080 | ||
2081 | return 0; | |
2082 | } | |
2083 | EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch); | |
2084 | ||
2085 | /** | |
2086 | * snd_soc_dapm_get_pin_switch - Get information for a pin switch | |
2087 | * | |
2088 | * @kcontrol: mixer control | |
2089 | * @ucontrol: Value | |
2090 | */ | |
2091 | int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol, | |
2092 | struct snd_ctl_elem_value *ucontrol) | |
2093 | { | |
2094 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
2095 | const char *pin = (const char *)kcontrol->private_value; | |
2096 | ||
2097 | mutex_lock(&codec->mutex); | |
2098 | ||
2099 | ucontrol->value.integer.value[0] = | |
ce6120cc | 2100 | snd_soc_dapm_get_pin_status(&codec->dapm, pin); |
8b37dbd2 MB |
2101 | |
2102 | mutex_unlock(&codec->mutex); | |
2103 | ||
2104 | return 0; | |
2105 | } | |
2106 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch); | |
2107 | ||
2108 | /** | |
2109 | * snd_soc_dapm_put_pin_switch - Set information for a pin switch | |
2110 | * | |
2111 | * @kcontrol: mixer control | |
2112 | * @ucontrol: Value | |
2113 | */ | |
2114 | int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol, | |
2115 | struct snd_ctl_elem_value *ucontrol) | |
2116 | { | |
2117 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
2118 | const char *pin = (const char *)kcontrol->private_value; | |
2119 | ||
2120 | mutex_lock(&codec->mutex); | |
2121 | ||
2122 | if (ucontrol->value.integer.value[0]) | |
ce6120cc | 2123 | snd_soc_dapm_enable_pin(&codec->dapm, pin); |
8b37dbd2 | 2124 | else |
ce6120cc | 2125 | snd_soc_dapm_disable_pin(&codec->dapm, pin); |
8b37dbd2 | 2126 | |
ce6120cc | 2127 | snd_soc_dapm_sync(&codec->dapm); |
8b37dbd2 MB |
2128 | |
2129 | mutex_unlock(&codec->mutex); | |
2130 | ||
2131 | return 0; | |
2132 | } | |
2133 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch); | |
2134 | ||
2b97eabc RP |
2135 | /** |
2136 | * snd_soc_dapm_new_control - create new dapm control | |
ce6120cc | 2137 | * @dapm: DAPM context |
2b97eabc RP |
2138 | * @widget: widget template |
2139 | * | |
2140 | * Creates a new dapm control based upon the template. | |
2141 | * | |
2142 | * Returns 0 for success else error. | |
2143 | */ | |
ce6120cc | 2144 | int snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
2145 | const struct snd_soc_dapm_widget *widget) |
2146 | { | |
2147 | struct snd_soc_dapm_widget *w; | |
ead9b919 | 2148 | size_t name_len; |
2b97eabc RP |
2149 | |
2150 | if ((w = dapm_cnew_widget(widget)) == NULL) | |
2151 | return -ENOMEM; | |
2152 | ||
ead9b919 JN |
2153 | name_len = strlen(widget->name) + 1; |
2154 | if (dapm->codec->name_prefix) | |
2155 | name_len += 1 + strlen(dapm->codec->name_prefix); | |
2156 | w->name = kmalloc(name_len, GFP_KERNEL); | |
2157 | if (w->name == NULL) { | |
2158 | kfree(w); | |
2159 | return -ENOMEM; | |
2160 | } | |
2161 | if (dapm->codec->name_prefix) | |
2162 | snprintf(w->name, name_len, "%s %s", | |
2163 | dapm->codec->name_prefix, widget->name); | |
2164 | else | |
2165 | snprintf(w->name, name_len, "%s", widget->name); | |
2166 | ||
97c866de | 2167 | dapm->n_widgets++; |
ce6120cc LG |
2168 | w->dapm = dapm; |
2169 | w->codec = dapm->codec; | |
2b97eabc RP |
2170 | INIT_LIST_HEAD(&w->sources); |
2171 | INIT_LIST_HEAD(&w->sinks); | |
2172 | INIT_LIST_HEAD(&w->list); | |
97c866de | 2173 | list_add(&w->list, &dapm->card->widgets); |
2b97eabc RP |
2174 | |
2175 | /* machine layer set ups unconnected pins and insertions */ | |
2176 | w->connected = 1; | |
2177 | return 0; | |
2178 | } | |
2179 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control); | |
2180 | ||
4ba1327a MB |
2181 | /** |
2182 | * snd_soc_dapm_new_controls - create new dapm controls | |
ce6120cc | 2183 | * @dapm: DAPM context |
4ba1327a MB |
2184 | * @widget: widget array |
2185 | * @num: number of widgets | |
2186 | * | |
2187 | * Creates new DAPM controls based upon the templates. | |
2188 | * | |
2189 | * Returns 0 for success else error. | |
2190 | */ | |
ce6120cc | 2191 | int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm, |
4ba1327a MB |
2192 | const struct snd_soc_dapm_widget *widget, |
2193 | int num) | |
2194 | { | |
2195 | int i, ret; | |
2196 | ||
2197 | for (i = 0; i < num; i++) { | |
ce6120cc | 2198 | ret = snd_soc_dapm_new_control(dapm, widget); |
b8b33cb5 | 2199 | if (ret < 0) { |
f7d41ae8 JN |
2200 | dev_err(dapm->dev, |
2201 | "ASoC: Failed to create DAPM control %s: %d\n", | |
2202 | widget->name, ret); | |
4ba1327a | 2203 | return ret; |
b8b33cb5 | 2204 | } |
4ba1327a MB |
2205 | widget++; |
2206 | } | |
2207 | return 0; | |
2208 | } | |
2209 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls); | |
2210 | ||
ce6120cc | 2211 | static void soc_dapm_stream_event(struct snd_soc_dapm_context *dapm, |
f0fba2ad | 2212 | const char *stream, int event) |
2b97eabc RP |
2213 | { |
2214 | struct snd_soc_dapm_widget *w; | |
2215 | ||
97c866de | 2216 | list_for_each_entry(w, &dapm->card->widgets, list) |
2b97eabc | 2217 | { |
97c866de | 2218 | if (!w->sname || w->dapm != dapm) |
2b97eabc | 2219 | continue; |
f7d41ae8 JN |
2220 | dev_dbg(w->dapm->dev, "widget %s\n %s stream %s event %d\n", |
2221 | w->name, w->sname, stream, event); | |
2b97eabc RP |
2222 | if (strstr(w->sname, stream)) { |
2223 | switch(event) { | |
2224 | case SND_SOC_DAPM_STREAM_START: | |
2225 | w->active = 1; | |
2226 | break; | |
2227 | case SND_SOC_DAPM_STREAM_STOP: | |
2228 | w->active = 0; | |
2229 | break; | |
2230 | case SND_SOC_DAPM_STREAM_SUSPEND: | |
2b97eabc | 2231 | case SND_SOC_DAPM_STREAM_RESUME: |
2b97eabc | 2232 | case SND_SOC_DAPM_STREAM_PAUSE_PUSH: |
2b97eabc RP |
2233 | case SND_SOC_DAPM_STREAM_PAUSE_RELEASE: |
2234 | break; | |
2235 | } | |
2236 | } | |
2237 | } | |
2b97eabc | 2238 | |
ce6120cc LG |
2239 | dapm_power_widgets(dapm, event); |
2240 | } | |
2241 | ||
2242 | /** | |
2243 | * snd_soc_dapm_stream_event - send a stream event to the dapm core | |
2244 | * @rtd: PCM runtime data | |
2245 | * @stream: stream name | |
2246 | * @event: stream event | |
2247 | * | |
2248 | * Sends a stream event to the dapm core. The core then makes any | |
2249 | * necessary widget power changes. | |
2250 | * | |
2251 | * Returns 0 for success else error. | |
2252 | */ | |
2253 | int snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, | |
2254 | const char *stream, int event) | |
2255 | { | |
2256 | struct snd_soc_codec *codec = rtd->codec; | |
2257 | ||
2258 | if (stream == NULL) | |
2259 | return 0; | |
2260 | ||
2261 | mutex_lock(&codec->mutex); | |
2262 | soc_dapm_stream_event(&codec->dapm, stream, event); | |
8e8b2d67 | 2263 | mutex_unlock(&codec->mutex); |
2b97eabc RP |
2264 | return 0; |
2265 | } | |
2b97eabc RP |
2266 | |
2267 | /** | |
a5302181 | 2268 | * snd_soc_dapm_enable_pin - enable pin. |
ce6120cc | 2269 | * @dapm: DAPM context |
a5302181 | 2270 | * @pin: pin name |
2b97eabc | 2271 | * |
74b8f955 | 2272 | * Enables input/output pin and its parents or children widgets iff there is |
a5302181 LG |
2273 | * a valid audio route and active audio stream. |
2274 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2275 | * do any widget power switching. | |
2b97eabc | 2276 | */ |
ce6120cc | 2277 | int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin) |
2b97eabc | 2278 | { |
ce6120cc | 2279 | return snd_soc_dapm_set_pin(dapm, pin, 1); |
a5302181 LG |
2280 | } |
2281 | EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin); | |
2b97eabc | 2282 | |
da34183e MB |
2283 | /** |
2284 | * snd_soc_dapm_force_enable_pin - force a pin to be enabled | |
ce6120cc | 2285 | * @dapm: DAPM context |
da34183e MB |
2286 | * @pin: pin name |
2287 | * | |
2288 | * Enables input/output pin regardless of any other state. This is | |
2289 | * intended for use with microphone bias supplies used in microphone | |
2290 | * jack detection. | |
2291 | * | |
2292 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2293 | * do any widget power switching. | |
2294 | */ | |
ce6120cc LG |
2295 | int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm, |
2296 | const char *pin) | |
da34183e MB |
2297 | { |
2298 | struct snd_soc_dapm_widget *w; | |
2299 | ||
97c866de JN |
2300 | list_for_each_entry(w, &dapm->card->widgets, list) { |
2301 | if (w->dapm != dapm) | |
2302 | continue; | |
da34183e | 2303 | if (!strcmp(w->name, pin)) { |
f7d41ae8 JN |
2304 | dev_dbg(w->dapm->dev, |
2305 | "dapm: force enable pin %s\n", pin); | |
da34183e MB |
2306 | w->connected = 1; |
2307 | w->force = 1; | |
2308 | return 0; | |
2309 | } | |
2310 | } | |
2311 | ||
f7d41ae8 | 2312 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); |
da34183e MB |
2313 | return -EINVAL; |
2314 | } | |
2315 | EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin); | |
2316 | ||
a5302181 LG |
2317 | /** |
2318 | * snd_soc_dapm_disable_pin - disable pin. | |
ce6120cc | 2319 | * @dapm: DAPM context |
a5302181 LG |
2320 | * @pin: pin name |
2321 | * | |
74b8f955 | 2322 | * Disables input/output pin and its parents or children widgets. |
a5302181 LG |
2323 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to |
2324 | * do any widget power switching. | |
2325 | */ | |
ce6120cc LG |
2326 | int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm, |
2327 | const char *pin) | |
a5302181 | 2328 | { |
ce6120cc | 2329 | return snd_soc_dapm_set_pin(dapm, pin, 0); |
2b97eabc | 2330 | } |
a5302181 | 2331 | EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin); |
2b97eabc | 2332 | |
5817b52a MB |
2333 | /** |
2334 | * snd_soc_dapm_nc_pin - permanently disable pin. | |
ce6120cc | 2335 | * @dapm: DAPM context |
5817b52a MB |
2336 | * @pin: pin name |
2337 | * | |
2338 | * Marks the specified pin as being not connected, disabling it along | |
2339 | * any parent or child widgets. At present this is identical to | |
2340 | * snd_soc_dapm_disable_pin() but in future it will be extended to do | |
2341 | * additional things such as disabling controls which only affect | |
2342 | * paths through the pin. | |
2343 | * | |
2344 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2345 | * do any widget power switching. | |
2346 | */ | |
ce6120cc | 2347 | int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin) |
5817b52a | 2348 | { |
ce6120cc | 2349 | return snd_soc_dapm_set_pin(dapm, pin, 0); |
5817b52a MB |
2350 | } |
2351 | EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin); | |
2352 | ||
eeec12bf | 2353 | /** |
a5302181 | 2354 | * snd_soc_dapm_get_pin_status - get audio pin status |
ce6120cc | 2355 | * @dapm: DAPM context |
a5302181 | 2356 | * @pin: audio signal pin endpoint (or start point) |
eeec12bf | 2357 | * |
a5302181 | 2358 | * Get audio pin status - connected or disconnected. |
eeec12bf | 2359 | * |
a5302181 | 2360 | * Returns 1 for connected otherwise 0. |
eeec12bf | 2361 | */ |
ce6120cc LG |
2362 | int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm, |
2363 | const char *pin) | |
eeec12bf GG |
2364 | { |
2365 | struct snd_soc_dapm_widget *w; | |
2366 | ||
97c866de JN |
2367 | list_for_each_entry(w, &dapm->card->widgets, list) { |
2368 | if (w->dapm != dapm) | |
2369 | continue; | |
a5302181 | 2370 | if (!strcmp(w->name, pin)) |
eeec12bf GG |
2371 | return w->connected; |
2372 | } | |
2373 | ||
2374 | return 0; | |
2375 | } | |
a5302181 | 2376 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status); |
eeec12bf | 2377 | |
1547aba9 MB |
2378 | /** |
2379 | * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint | |
ce6120cc | 2380 | * @dapm: DAPM context |
1547aba9 MB |
2381 | * @pin: audio signal pin endpoint (or start point) |
2382 | * | |
2383 | * Mark the given endpoint or pin as ignoring suspend. When the | |
2384 | * system is disabled a path between two endpoints flagged as ignoring | |
2385 | * suspend will not be disabled. The path must already be enabled via | |
2386 | * normal means at suspend time, it will not be turned on if it was not | |
2387 | * already enabled. | |
2388 | */ | |
ce6120cc LG |
2389 | int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm, |
2390 | const char *pin) | |
1547aba9 MB |
2391 | { |
2392 | struct snd_soc_dapm_widget *w; | |
2393 | ||
97c866de JN |
2394 | list_for_each_entry(w, &dapm->card->widgets, list) { |
2395 | if (w->dapm != dapm) | |
2396 | continue; | |
1547aba9 MB |
2397 | if (!strcmp(w->name, pin)) { |
2398 | w->ignore_suspend = 1; | |
2399 | return 0; | |
2400 | } | |
2401 | } | |
2402 | ||
f7d41ae8 | 2403 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); |
1547aba9 MB |
2404 | return -EINVAL; |
2405 | } | |
2406 | EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend); | |
2407 | ||
2b97eabc RP |
2408 | /** |
2409 | * snd_soc_dapm_free - free dapm resources | |
f0fba2ad | 2410 | * @card: SoC device |
2b97eabc RP |
2411 | * |
2412 | * Free all dapm widgets and resources. | |
2413 | */ | |
ce6120cc | 2414 | void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm) |
2b97eabc | 2415 | { |
ce6120cc LG |
2416 | snd_soc_dapm_sys_remove(dapm->dev); |
2417 | dapm_free_widgets(dapm); | |
7be31be8 | 2418 | list_del(&dapm->list); |
2b97eabc RP |
2419 | } |
2420 | EXPORT_SYMBOL_GPL(snd_soc_dapm_free); | |
2421 | ||
ce6120cc | 2422 | static void soc_dapm_shutdown_codec(struct snd_soc_dapm_context *dapm) |
51737470 | 2423 | { |
51737470 MB |
2424 | struct snd_soc_dapm_widget *w; |
2425 | LIST_HEAD(down_list); | |
2426 | int powerdown = 0; | |
2427 | ||
97c866de JN |
2428 | list_for_each_entry(w, &dapm->card->widgets, list) { |
2429 | if (w->dapm != dapm) | |
2430 | continue; | |
51737470 | 2431 | if (w->power) { |
828a842f | 2432 | dapm_seq_insert(w, &down_list, false); |
c2caa4da | 2433 | w->power = 0; |
51737470 MB |
2434 | powerdown = 1; |
2435 | } | |
2436 | } | |
2437 | ||
2438 | /* If there were no widgets to power down we're already in | |
2439 | * standby. | |
2440 | */ | |
2441 | if (powerdown) { | |
ce6120cc | 2442 | snd_soc_dapm_set_bias_level(NULL, dapm, SND_SOC_BIAS_PREPARE); |
828a842f | 2443 | dapm_seq_run(dapm, &down_list, 0, false); |
ce6120cc | 2444 | snd_soc_dapm_set_bias_level(NULL, dapm, SND_SOC_BIAS_STANDBY); |
51737470 | 2445 | } |
f0fba2ad LG |
2446 | } |
2447 | ||
2448 | /* | |
2449 | * snd_soc_dapm_shutdown - callback for system shutdown | |
2450 | */ | |
2451 | void snd_soc_dapm_shutdown(struct snd_soc_card *card) | |
2452 | { | |
2453 | struct snd_soc_codec *codec; | |
2454 | ||
ce6120cc LG |
2455 | list_for_each_entry(codec, &card->codec_dev_list, list) { |
2456 | soc_dapm_shutdown_codec(&codec->dapm); | |
2457 | snd_soc_dapm_set_bias_level(card, &codec->dapm, SND_SOC_BIAS_OFF); | |
2458 | } | |
51737470 MB |
2459 | } |
2460 | ||
2b97eabc | 2461 | /* Module information */ |
d331124d | 2462 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
2b97eabc RP |
2463 | MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC"); |
2464 | MODULE_LICENSE("GPL"); |