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Commit | Line | Data |
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2b97eabc RP |
1 | /* |
2 | * soc-dapm.c -- ALSA SoC Dynamic Audio Power Management | |
3 | * | |
4 | * Copyright 2005 Wolfson Microelectronics PLC. | |
d331124d | 5 | * Author: Liam Girdwood <lrg@slimlogic.co.uk> |
2b97eabc RP |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2 of the License, or (at your | |
10 | * option) any later version. | |
11 | * | |
2b97eabc RP |
12 | * Features: |
13 | * o Changes power status of internal codec blocks depending on the | |
14 | * dynamic configuration of codec internal audio paths and active | |
74b8f955 | 15 | * DACs/ADCs. |
2b97eabc RP |
16 | * o Platform power domain - can support external components i.e. amps and |
17 | * mic/meadphone insertion events. | |
18 | * o Automatic Mic Bias support | |
19 | * o Jack insertion power event initiation - e.g. hp insertion will enable | |
20 | * sinks, dacs, etc | |
3a4fa0a2 | 21 | * o Delayed powerdown of audio susbsystem to reduce pops between a quick |
2b97eabc RP |
22 | * device reopen. |
23 | * | |
24 | * Todo: | |
25 | * o DAPM power change sequencing - allow for configurable per | |
26 | * codec sequences. | |
27 | * o Support for analogue bias optimisation. | |
28 | * o Support for reduced codec oversampling rates. | |
29 | * o Support for reduced codec bias currents. | |
30 | */ | |
31 | ||
32 | #include <linux/module.h> | |
33 | #include <linux/moduleparam.h> | |
34 | #include <linux/init.h> | |
35 | #include <linux/delay.h> | |
36 | #include <linux/pm.h> | |
37 | #include <linux/bitops.h> | |
38 | #include <linux/platform_device.h> | |
39 | #include <linux/jiffies.h> | |
20496ff3 | 40 | #include <linux/debugfs.h> |
5a0e3ad6 | 41 | #include <linux/slab.h> |
2b97eabc RP |
42 | #include <sound/core.h> |
43 | #include <sound/pcm.h> | |
44 | #include <sound/pcm_params.h> | |
ce6120cc | 45 | #include <sound/soc.h> |
2b97eabc RP |
46 | #include <sound/soc-dapm.h> |
47 | #include <sound/initval.h> | |
48 | ||
2b97eabc RP |
49 | /* dapm power sequences - make this per codec in the future */ |
50 | static int dapm_up_seq[] = { | |
38357ab2 MB |
51 | [snd_soc_dapm_pre] = 0, |
52 | [snd_soc_dapm_supply] = 1, | |
53 | [snd_soc_dapm_micbias] = 2, | |
010ff262 MB |
54 | [snd_soc_dapm_aif_in] = 3, |
55 | [snd_soc_dapm_aif_out] = 3, | |
56 | [snd_soc_dapm_mic] = 4, | |
57 | [snd_soc_dapm_mux] = 5, | |
58 | [snd_soc_dapm_value_mux] = 5, | |
59 | [snd_soc_dapm_dac] = 6, | |
60 | [snd_soc_dapm_mixer] = 7, | |
61 | [snd_soc_dapm_mixer_named_ctl] = 7, | |
62 | [snd_soc_dapm_pga] = 8, | |
63 | [snd_soc_dapm_adc] = 9, | |
64 | [snd_soc_dapm_hp] = 10, | |
65 | [snd_soc_dapm_spk] = 10, | |
66 | [snd_soc_dapm_post] = 11, | |
2b97eabc | 67 | }; |
ca9c1aae | 68 | |
2b97eabc | 69 | static int dapm_down_seq[] = { |
38357ab2 MB |
70 | [snd_soc_dapm_pre] = 0, |
71 | [snd_soc_dapm_adc] = 1, | |
72 | [snd_soc_dapm_hp] = 2, | |
1ca04065 | 73 | [snd_soc_dapm_spk] = 2, |
38357ab2 MB |
74 | [snd_soc_dapm_pga] = 4, |
75 | [snd_soc_dapm_mixer_named_ctl] = 5, | |
e3d4dabd MB |
76 | [snd_soc_dapm_mixer] = 5, |
77 | [snd_soc_dapm_dac] = 6, | |
78 | [snd_soc_dapm_mic] = 7, | |
79 | [snd_soc_dapm_micbias] = 8, | |
80 | [snd_soc_dapm_mux] = 9, | |
81 | [snd_soc_dapm_value_mux] = 9, | |
010ff262 MB |
82 | [snd_soc_dapm_aif_in] = 10, |
83 | [snd_soc_dapm_aif_out] = 10, | |
84 | [snd_soc_dapm_supply] = 11, | |
85 | [snd_soc_dapm_post] = 12, | |
2b97eabc RP |
86 | }; |
87 | ||
12ef193d | 88 | static void pop_wait(u32 pop_time) |
15e4c72f MB |
89 | { |
90 | if (pop_time) | |
91 | schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time)); | |
92 | } | |
93 | ||
12ef193d | 94 | static void pop_dbg(u32 pop_time, const char *fmt, ...) |
15e4c72f MB |
95 | { |
96 | va_list args; | |
97 | ||
98 | va_start(args, fmt); | |
99 | ||
100 | if (pop_time) { | |
101 | vprintk(fmt, args); | |
15e4c72f MB |
102 | } |
103 | ||
104 | va_end(args); | |
105 | } | |
106 | ||
2b97eabc | 107 | /* create a new dapm widget */ |
88cb4290 | 108 | static inline struct snd_soc_dapm_widget *dapm_cnew_widget( |
2b97eabc RP |
109 | const struct snd_soc_dapm_widget *_widget) |
110 | { | |
88cb4290 | 111 | return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL); |
2b97eabc RP |
112 | } |
113 | ||
452c5eaa MB |
114 | /** |
115 | * snd_soc_dapm_set_bias_level - set the bias level for the system | |
f0fba2ad | 116 | * @card: audio device |
452c5eaa MB |
117 | * @level: level to configure |
118 | * | |
119 | * Configure the bias (power) levels for the SoC audio device. | |
120 | * | |
121 | * Returns 0 for success else error. | |
122 | */ | |
f0fba2ad | 123 | static int snd_soc_dapm_set_bias_level(struct snd_soc_card *card, |
ce6120cc LG |
124 | struct snd_soc_dapm_context *dapm, |
125 | enum snd_soc_bias_level level) | |
452c5eaa | 126 | { |
452c5eaa MB |
127 | int ret = 0; |
128 | ||
f83fba8b MB |
129 | switch (level) { |
130 | case SND_SOC_BIAS_ON: | |
ce6120cc | 131 | dev_dbg(dapm->dev, "Setting full bias\n"); |
f83fba8b MB |
132 | break; |
133 | case SND_SOC_BIAS_PREPARE: | |
ce6120cc | 134 | dev_dbg(dapm->dev, "Setting bias prepare\n"); |
f83fba8b MB |
135 | break; |
136 | case SND_SOC_BIAS_STANDBY: | |
ce6120cc | 137 | dev_dbg(dapm->dev, "Setting standby bias\n"); |
f83fba8b MB |
138 | break; |
139 | case SND_SOC_BIAS_OFF: | |
ce6120cc | 140 | dev_dbg(dapm->dev, "Setting bias off\n"); |
f83fba8b MB |
141 | break; |
142 | default: | |
ce6120cc | 143 | dev_err(dapm->dev, "Setting invalid bias %d\n", level); |
f83fba8b MB |
144 | return -EINVAL; |
145 | } | |
146 | ||
f0fba2ad | 147 | if (card && card->set_bias_level) |
452c5eaa | 148 | ret = card->set_bias_level(card, level); |
474e09ca | 149 | if (ret == 0) { |
ce6120cc LG |
150 | if (dapm->codec && dapm->codec->driver->set_bias_level) |
151 | ret = dapm->codec->driver->set_bias_level(dapm->codec, level); | |
474e09ca | 152 | else |
ce6120cc | 153 | dapm->bias_level = level; |
474e09ca | 154 | } |
452c5eaa MB |
155 | |
156 | return ret; | |
157 | } | |
158 | ||
2b97eabc RP |
159 | /* set up initial codec paths */ |
160 | static void dapm_set_path_status(struct snd_soc_dapm_widget *w, | |
161 | struct snd_soc_dapm_path *p, int i) | |
162 | { | |
163 | switch (w->id) { | |
164 | case snd_soc_dapm_switch: | |
ca9c1aae IM |
165 | case snd_soc_dapm_mixer: |
166 | case snd_soc_dapm_mixer_named_ctl: { | |
2b97eabc | 167 | int val; |
4eaa9819 JS |
168 | struct soc_mixer_control *mc = (struct soc_mixer_control *) |
169 | w->kcontrols[i].private_value; | |
815ecf8d JS |
170 | unsigned int reg = mc->reg; |
171 | unsigned int shift = mc->shift; | |
4eaa9819 | 172 | int max = mc->max; |
815ecf8d JS |
173 | unsigned int mask = (1 << fls(max)) - 1; |
174 | unsigned int invert = mc->invert; | |
2b97eabc RP |
175 | |
176 | val = snd_soc_read(w->codec, reg); | |
177 | val = (val >> shift) & mask; | |
178 | ||
179 | if ((invert && !val) || (!invert && val)) | |
180 | p->connect = 1; | |
181 | else | |
182 | p->connect = 0; | |
183 | } | |
184 | break; | |
185 | case snd_soc_dapm_mux: { | |
186 | struct soc_enum *e = (struct soc_enum *)w->kcontrols[i].private_value; | |
187 | int val, item, bitmask; | |
188 | ||
f8ba0b7b | 189 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
190 | ; |
191 | val = snd_soc_read(w->codec, e->reg); | |
192 | item = (val >> e->shift_l) & (bitmask - 1); | |
193 | ||
194 | p->connect = 0; | |
f8ba0b7b | 195 | for (i = 0; i < e->max; i++) { |
2b97eabc RP |
196 | if (!(strcmp(p->name, e->texts[i])) && item == i) |
197 | p->connect = 1; | |
198 | } | |
199 | } | |
200 | break; | |
2e72f8e3 | 201 | case snd_soc_dapm_value_mux: { |
74155556 | 202 | struct soc_enum *e = (struct soc_enum *) |
2e72f8e3 PU |
203 | w->kcontrols[i].private_value; |
204 | int val, item; | |
205 | ||
206 | val = snd_soc_read(w->codec, e->reg); | |
207 | val = (val >> e->shift_l) & e->mask; | |
208 | for (item = 0; item < e->max; item++) { | |
209 | if (val == e->values[item]) | |
210 | break; | |
211 | } | |
212 | ||
213 | p->connect = 0; | |
214 | for (i = 0; i < e->max; i++) { | |
215 | if (!(strcmp(p->name, e->texts[i])) && item == i) | |
216 | p->connect = 1; | |
217 | } | |
218 | } | |
219 | break; | |
2b97eabc RP |
220 | /* does not effect routing - always connected */ |
221 | case snd_soc_dapm_pga: | |
222 | case snd_soc_dapm_output: | |
223 | case snd_soc_dapm_adc: | |
224 | case snd_soc_dapm_input: | |
225 | case snd_soc_dapm_dac: | |
226 | case snd_soc_dapm_micbias: | |
227 | case snd_soc_dapm_vmid: | |
246d0a17 | 228 | case snd_soc_dapm_supply: |
010ff262 MB |
229 | case snd_soc_dapm_aif_in: |
230 | case snd_soc_dapm_aif_out: | |
2b97eabc RP |
231 | p->connect = 1; |
232 | break; | |
233 | /* does effect routing - dynamically connected */ | |
234 | case snd_soc_dapm_hp: | |
235 | case snd_soc_dapm_mic: | |
236 | case snd_soc_dapm_spk: | |
237 | case snd_soc_dapm_line: | |
238 | case snd_soc_dapm_pre: | |
239 | case snd_soc_dapm_post: | |
240 | p->connect = 0; | |
241 | break; | |
242 | } | |
243 | } | |
244 | ||
74b8f955 | 245 | /* connect mux widget to its interconnecting audio paths */ |
ce6120cc | 246 | static int dapm_connect_mux(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
247 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, |
248 | struct snd_soc_dapm_path *path, const char *control_name, | |
249 | const struct snd_kcontrol_new *kcontrol) | |
250 | { | |
251 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
252 | int i; | |
253 | ||
f8ba0b7b | 254 | for (i = 0; i < e->max; i++) { |
2b97eabc | 255 | if (!(strcmp(control_name, e->texts[i]))) { |
ce6120cc | 256 | list_add(&path->list, &dapm->paths); |
2b97eabc RP |
257 | list_add(&path->list_sink, &dest->sources); |
258 | list_add(&path->list_source, &src->sinks); | |
259 | path->name = (char*)e->texts[i]; | |
260 | dapm_set_path_status(dest, path, 0); | |
261 | return 0; | |
262 | } | |
263 | } | |
264 | ||
265 | return -ENODEV; | |
266 | } | |
267 | ||
74b8f955 | 268 | /* connect mixer widget to its interconnecting audio paths */ |
ce6120cc | 269 | static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
270 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, |
271 | struct snd_soc_dapm_path *path, const char *control_name) | |
272 | { | |
273 | int i; | |
274 | ||
275 | /* search for mixer kcontrol */ | |
276 | for (i = 0; i < dest->num_kcontrols; i++) { | |
277 | if (!strcmp(control_name, dest->kcontrols[i].name)) { | |
ce6120cc | 278 | list_add(&path->list, &dapm->paths); |
2b97eabc RP |
279 | list_add(&path->list_sink, &dest->sources); |
280 | list_add(&path->list_source, &src->sinks); | |
281 | path->name = dest->kcontrols[i].name; | |
282 | dapm_set_path_status(dest, path, i); | |
283 | return 0; | |
284 | } | |
285 | } | |
286 | return -ENODEV; | |
287 | } | |
288 | ||
289 | /* update dapm codec register bits */ | |
290 | static int dapm_update_bits(struct snd_soc_dapm_widget *widget) | |
291 | { | |
292 | int change, power; | |
46f5822f | 293 | unsigned int old, new; |
2b97eabc | 294 | struct snd_soc_codec *codec = widget->codec; |
ce6120cc | 295 | struct snd_soc_dapm_context *dapm = widget->dapm; |
2b97eabc RP |
296 | |
297 | /* check for valid widgets */ | |
298 | if (widget->reg < 0 || widget->id == snd_soc_dapm_input || | |
299 | widget->id == snd_soc_dapm_output || | |
300 | widget->id == snd_soc_dapm_hp || | |
301 | widget->id == snd_soc_dapm_mic || | |
302 | widget->id == snd_soc_dapm_line || | |
303 | widget->id == snd_soc_dapm_spk) | |
304 | return 0; | |
305 | ||
306 | power = widget->power; | |
307 | if (widget->invert) | |
308 | power = (power ? 0:1); | |
309 | ||
310 | old = snd_soc_read(codec, widget->reg); | |
311 | new = (old & ~(0x1 << widget->shift)) | (power << widget->shift); | |
312 | ||
313 | change = old != new; | |
314 | if (change) { | |
ce6120cc | 315 | pop_dbg(dapm->pop_time, "pop test %s : %s in %d ms\n", |
12ef193d | 316 | widget->name, widget->power ? "on" : "off", |
ce6120cc LG |
317 | dapm->pop_time); |
318 | pop_wait(dapm->pop_time); | |
69224719 | 319 | snd_soc_write(codec, widget->reg, new); |
2b97eabc | 320 | } |
c1286b86 MB |
321 | pr_debug("reg %x old %x new %x change %d\n", widget->reg, |
322 | old, new, change); | |
2b97eabc RP |
323 | return change; |
324 | } | |
325 | ||
2b97eabc | 326 | /* create new dapm mixer control */ |
ce6120cc | 327 | static int dapm_new_mixer(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
328 | struct snd_soc_dapm_widget *w) |
329 | { | |
330 | int i, ret = 0; | |
219b93f5 | 331 | size_t name_len; |
2b97eabc | 332 | struct snd_soc_dapm_path *path; |
ce6120cc | 333 | struct snd_card *card = dapm->codec->card->snd_card; |
2b97eabc RP |
334 | |
335 | /* add kcontrol */ | |
336 | for (i = 0; i < w->num_kcontrols; i++) { | |
337 | ||
338 | /* match name */ | |
339 | list_for_each_entry(path, &w->sources, list_sink) { | |
340 | ||
341 | /* mixer/mux paths name must match control name */ | |
342 | if (path->name != (char*)w->kcontrols[i].name) | |
343 | continue; | |
344 | ||
ca9c1aae IM |
345 | /* add dapm control with long name. |
346 | * for dapm_mixer this is the concatenation of the | |
347 | * mixer and kcontrol name. | |
348 | * for dapm_mixer_named_ctl this is simply the | |
349 | * kcontrol name. | |
350 | */ | |
351 | name_len = strlen(w->kcontrols[i].name) + 1; | |
07495f3e | 352 | if (w->id != snd_soc_dapm_mixer_named_ctl) |
ca9c1aae IM |
353 | name_len += 1 + strlen(w->name); |
354 | ||
219b93f5 | 355 | path->long_name = kmalloc(name_len, GFP_KERNEL); |
ca9c1aae | 356 | |
2b97eabc RP |
357 | if (path->long_name == NULL) |
358 | return -ENOMEM; | |
359 | ||
ca9c1aae | 360 | switch (w->id) { |
ca9c1aae IM |
361 | default: |
362 | snprintf(path->long_name, name_len, "%s %s", | |
363 | w->name, w->kcontrols[i].name); | |
07495f3e | 364 | break; |
ca9c1aae IM |
365 | case snd_soc_dapm_mixer_named_ctl: |
366 | snprintf(path->long_name, name_len, "%s", | |
367 | w->kcontrols[i].name); | |
07495f3e | 368 | break; |
ca9c1aae IM |
369 | } |
370 | ||
219b93f5 MB |
371 | path->long_name[name_len - 1] = '\0'; |
372 | ||
2b97eabc RP |
373 | path->kcontrol = snd_soc_cnew(&w->kcontrols[i], w, |
374 | path->long_name); | |
ce6120cc | 375 | ret = snd_ctl_add(card, path->kcontrol); |
2b97eabc | 376 | if (ret < 0) { |
6553e192 MB |
377 | printk(KERN_ERR "asoc: failed to add dapm kcontrol %s: %d\n", |
378 | path->long_name, | |
379 | ret); | |
2b97eabc RP |
380 | kfree(path->long_name); |
381 | path->long_name = NULL; | |
382 | return ret; | |
383 | } | |
384 | } | |
385 | } | |
386 | return ret; | |
387 | } | |
388 | ||
389 | /* create new dapm mux control */ | |
ce6120cc | 390 | static int dapm_new_mux(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
391 | struct snd_soc_dapm_widget *w) |
392 | { | |
393 | struct snd_soc_dapm_path *path = NULL; | |
394 | struct snd_kcontrol *kcontrol; | |
ce6120cc | 395 | struct snd_card *card = dapm->codec->card->snd_card; |
2b97eabc RP |
396 | int ret = 0; |
397 | ||
398 | if (!w->num_kcontrols) { | |
399 | printk(KERN_ERR "asoc: mux %s has no controls\n", w->name); | |
400 | return -EINVAL; | |
401 | } | |
402 | ||
403 | kcontrol = snd_soc_cnew(&w->kcontrols[0], w, w->name); | |
ce6120cc LG |
404 | ret = snd_ctl_add(card, kcontrol); |
405 | ||
2b97eabc RP |
406 | if (ret < 0) |
407 | goto err; | |
408 | ||
409 | list_for_each_entry(path, &w->sources, list_sink) | |
410 | path->kcontrol = kcontrol; | |
411 | ||
412 | return ret; | |
413 | ||
414 | err: | |
415 | printk(KERN_ERR "asoc: failed to add kcontrol %s\n", w->name); | |
416 | return ret; | |
417 | } | |
418 | ||
419 | /* create new dapm volume control */ | |
ce6120cc | 420 | static int dapm_new_pga(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
421 | struct snd_soc_dapm_widget *w) |
422 | { | |
a6c65736 MB |
423 | if (w->num_kcontrols) |
424 | pr_err("asoc: PGA controls not supported: '%s'\n", w->name); | |
2b97eabc | 425 | |
a6c65736 | 426 | return 0; |
2b97eabc RP |
427 | } |
428 | ||
429 | /* reset 'walked' bit for each dapm path */ | |
ce6120cc | 430 | static inline void dapm_clear_walk(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
431 | { |
432 | struct snd_soc_dapm_path *p; | |
433 | ||
ce6120cc | 434 | list_for_each_entry(p, &dapm->paths, list) |
2b97eabc RP |
435 | p->walked = 0; |
436 | } | |
437 | ||
9949788b MB |
438 | /* We implement power down on suspend by checking the power state of |
439 | * the ALSA card - when we are suspending the ALSA state for the card | |
440 | * is set to D3. | |
441 | */ | |
442 | static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget) | |
443 | { | |
ce6120cc | 444 | int level = snd_power_get_state(widget->dapm->codec->card->snd_card); |
9949788b | 445 | |
f0fba2ad | 446 | switch (level) { |
9949788b MB |
447 | case SNDRV_CTL_POWER_D3hot: |
448 | case SNDRV_CTL_POWER_D3cold: | |
1547aba9 MB |
449 | if (widget->ignore_suspend) |
450 | pr_debug("%s ignoring suspend\n", widget->name); | |
451 | return widget->ignore_suspend; | |
9949788b MB |
452 | default: |
453 | return 1; | |
454 | } | |
455 | } | |
456 | ||
2b97eabc RP |
457 | /* |
458 | * Recursively check for a completed path to an active or physically connected | |
459 | * output widget. Returns number of complete paths. | |
460 | */ | |
461 | static int is_connected_output_ep(struct snd_soc_dapm_widget *widget) | |
462 | { | |
463 | struct snd_soc_dapm_path *path; | |
464 | int con = 0; | |
465 | ||
246d0a17 MB |
466 | if (widget->id == snd_soc_dapm_supply) |
467 | return 0; | |
468 | ||
010ff262 MB |
469 | switch (widget->id) { |
470 | case snd_soc_dapm_adc: | |
471 | case snd_soc_dapm_aif_out: | |
472 | if (widget->active) | |
9949788b | 473 | return snd_soc_dapm_suspend_check(widget); |
010ff262 MB |
474 | default: |
475 | break; | |
476 | } | |
2b97eabc RP |
477 | |
478 | if (widget->connected) { | |
479 | /* connected pin ? */ | |
480 | if (widget->id == snd_soc_dapm_output && !widget->ext) | |
9949788b | 481 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
482 | |
483 | /* connected jack or spk ? */ | |
484 | if (widget->id == snd_soc_dapm_hp || widget->id == snd_soc_dapm_spk || | |
eaeae5d9 | 485 | (widget->id == snd_soc_dapm_line && !list_empty(&widget->sources))) |
9949788b | 486 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
487 | } |
488 | ||
489 | list_for_each_entry(path, &widget->sinks, list_source) { | |
490 | if (path->walked) | |
491 | continue; | |
492 | ||
493 | if (path->sink && path->connect) { | |
494 | path->walked = 1; | |
495 | con += is_connected_output_ep(path->sink); | |
496 | } | |
497 | } | |
498 | ||
499 | return con; | |
500 | } | |
501 | ||
502 | /* | |
503 | * Recursively check for a completed path to an active or physically connected | |
504 | * input widget. Returns number of complete paths. | |
505 | */ | |
506 | static int is_connected_input_ep(struct snd_soc_dapm_widget *widget) | |
507 | { | |
508 | struct snd_soc_dapm_path *path; | |
509 | int con = 0; | |
510 | ||
246d0a17 MB |
511 | if (widget->id == snd_soc_dapm_supply) |
512 | return 0; | |
513 | ||
2b97eabc | 514 | /* active stream ? */ |
010ff262 MB |
515 | switch (widget->id) { |
516 | case snd_soc_dapm_dac: | |
517 | case snd_soc_dapm_aif_in: | |
518 | if (widget->active) | |
9949788b | 519 | return snd_soc_dapm_suspend_check(widget); |
010ff262 MB |
520 | default: |
521 | break; | |
522 | } | |
2b97eabc RP |
523 | |
524 | if (widget->connected) { | |
525 | /* connected pin ? */ | |
526 | if (widget->id == snd_soc_dapm_input && !widget->ext) | |
9949788b | 527 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
528 | |
529 | /* connected VMID/Bias for lower pops */ | |
530 | if (widget->id == snd_soc_dapm_vmid) | |
9949788b | 531 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
532 | |
533 | /* connected jack ? */ | |
eaeae5d9 PU |
534 | if (widget->id == snd_soc_dapm_mic || |
535 | (widget->id == snd_soc_dapm_line && !list_empty(&widget->sinks))) | |
9949788b | 536 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
537 | } |
538 | ||
539 | list_for_each_entry(path, &widget->sources, list_sink) { | |
540 | if (path->walked) | |
541 | continue; | |
542 | ||
543 | if (path->source && path->connect) { | |
544 | path->walked = 1; | |
545 | con += is_connected_input_ep(path->source); | |
546 | } | |
547 | } | |
548 | ||
549 | return con; | |
550 | } | |
551 | ||
e2be2ccf JN |
552 | /* |
553 | * Handler for generic register modifier widget. | |
554 | */ | |
555 | int dapm_reg_event(struct snd_soc_dapm_widget *w, | |
556 | struct snd_kcontrol *kcontrol, int event) | |
557 | { | |
558 | unsigned int val; | |
559 | ||
560 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
561 | val = w->on_val; | |
562 | else | |
563 | val = w->off_val; | |
564 | ||
565 | snd_soc_update_bits(w->codec, -(w->reg + 1), | |
566 | w->mask << w->shift, val << w->shift); | |
567 | ||
568 | return 0; | |
569 | } | |
11589418 | 570 | EXPORT_SYMBOL_GPL(dapm_reg_event); |
e2be2ccf | 571 | |
025756ec MB |
572 | /* Standard power change method, used to apply power changes to most |
573 | * widgets. | |
574 | */ | |
575 | static int dapm_generic_apply_power(struct snd_soc_dapm_widget *w) | |
576 | { | |
577 | int ret; | |
578 | ||
579 | /* call any power change event handlers */ | |
580 | if (w->event) | |
581 | pr_debug("power %s event for %s flags %x\n", | |
582 | w->power ? "on" : "off", | |
583 | w->name, w->event_flags); | |
584 | ||
585 | /* power up pre event */ | |
586 | if (w->power && w->event && | |
587 | (w->event_flags & SND_SOC_DAPM_PRE_PMU)) { | |
588 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMU); | |
589 | if (ret < 0) | |
590 | return ret; | |
591 | } | |
592 | ||
593 | /* power down pre event */ | |
594 | if (!w->power && w->event && | |
595 | (w->event_flags & SND_SOC_DAPM_PRE_PMD)) { | |
596 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMD); | |
597 | if (ret < 0) | |
598 | return ret; | |
599 | } | |
600 | ||
025756ec MB |
601 | dapm_update_bits(w); |
602 | ||
025756ec MB |
603 | /* power up post event */ |
604 | if (w->power && w->event && | |
605 | (w->event_flags & SND_SOC_DAPM_POST_PMU)) { | |
606 | ret = w->event(w, | |
607 | NULL, SND_SOC_DAPM_POST_PMU); | |
608 | if (ret < 0) | |
609 | return ret; | |
610 | } | |
611 | ||
612 | /* power down post event */ | |
613 | if (!w->power && w->event && | |
614 | (w->event_flags & SND_SOC_DAPM_POST_PMD)) { | |
615 | ret = w->event(w, NULL, SND_SOC_DAPM_POST_PMD); | |
616 | if (ret < 0) | |
617 | return ret; | |
618 | } | |
619 | ||
620 | return 0; | |
621 | } | |
622 | ||
cd0f2d47 MB |
623 | /* Generic check to see if a widget should be powered. |
624 | */ | |
625 | static int dapm_generic_check_power(struct snd_soc_dapm_widget *w) | |
626 | { | |
627 | int in, out; | |
628 | ||
629 | in = is_connected_input_ep(w); | |
ce6120cc | 630 | dapm_clear_walk(w->dapm); |
cd0f2d47 | 631 | out = is_connected_output_ep(w); |
ce6120cc | 632 | dapm_clear_walk(w->dapm); |
cd0f2d47 MB |
633 | return out != 0 && in != 0; |
634 | } | |
635 | ||
6ea31b9f MB |
636 | /* Check to see if an ADC has power */ |
637 | static int dapm_adc_check_power(struct snd_soc_dapm_widget *w) | |
638 | { | |
639 | int in; | |
640 | ||
641 | if (w->active) { | |
642 | in = is_connected_input_ep(w); | |
ce6120cc | 643 | dapm_clear_walk(w->dapm); |
6ea31b9f MB |
644 | return in != 0; |
645 | } else { | |
646 | return dapm_generic_check_power(w); | |
647 | } | |
648 | } | |
649 | ||
650 | /* Check to see if a DAC has power */ | |
651 | static int dapm_dac_check_power(struct snd_soc_dapm_widget *w) | |
652 | { | |
653 | int out; | |
654 | ||
655 | if (w->active) { | |
656 | out = is_connected_output_ep(w); | |
ce6120cc | 657 | dapm_clear_walk(w->dapm); |
6ea31b9f MB |
658 | return out != 0; |
659 | } else { | |
660 | return dapm_generic_check_power(w); | |
661 | } | |
662 | } | |
663 | ||
246d0a17 MB |
664 | /* Check to see if a power supply is needed */ |
665 | static int dapm_supply_check_power(struct snd_soc_dapm_widget *w) | |
666 | { | |
667 | struct snd_soc_dapm_path *path; | |
668 | int power = 0; | |
669 | ||
670 | /* Check if one of our outputs is connected */ | |
671 | list_for_each_entry(path, &w->sinks, list_source) { | |
215edda3 MB |
672 | if (path->connected && |
673 | !path->connected(path->source, path->sink)) | |
674 | continue; | |
675 | ||
246d0a17 MB |
676 | if (path->sink && path->sink->power_check && |
677 | path->sink->power_check(path->sink)) { | |
678 | power = 1; | |
679 | break; | |
680 | } | |
681 | } | |
682 | ||
ce6120cc | 683 | dapm_clear_walk(w->dapm); |
246d0a17 MB |
684 | |
685 | return power; | |
686 | } | |
687 | ||
38357ab2 MB |
688 | static int dapm_seq_compare(struct snd_soc_dapm_widget *a, |
689 | struct snd_soc_dapm_widget *b, | |
690 | int sort[]) | |
42aa3418 | 691 | { |
d207c68d MB |
692 | if (a->codec != b->codec) |
693 | return (unsigned long)a - (unsigned long)b; | |
38357ab2 MB |
694 | if (sort[a->id] != sort[b->id]) |
695 | return sort[a->id] - sort[b->id]; | |
b22ead2a MB |
696 | if (a->reg != b->reg) |
697 | return a->reg - b->reg; | |
42aa3418 | 698 | |
38357ab2 MB |
699 | return 0; |
700 | } | |
42aa3418 | 701 | |
38357ab2 MB |
702 | /* Insert a widget in order into a DAPM power sequence. */ |
703 | static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget, | |
704 | struct list_head *list, | |
705 | int sort[]) | |
706 | { | |
707 | struct snd_soc_dapm_widget *w; | |
708 | ||
709 | list_for_each_entry(w, list, power_list) | |
710 | if (dapm_seq_compare(new_widget, w, sort) < 0) { | |
711 | list_add_tail(&new_widget->power_list, &w->power_list); | |
712 | return; | |
713 | } | |
714 | ||
715 | list_add_tail(&new_widget->power_list, list); | |
716 | } | |
717 | ||
b22ead2a | 718 | /* Apply the coalesced changes from a DAPM sequence */ |
ce6120cc | 719 | static void dapm_seq_run_coalesced(struct snd_soc_dapm_context *dapm, |
b22ead2a | 720 | struct list_head *pending) |
163cac06 MB |
721 | { |
722 | struct snd_soc_dapm_widget *w; | |
81628103 | 723 | int reg, power, ret; |
b22ead2a MB |
724 | unsigned int value = 0; |
725 | unsigned int mask = 0; | |
726 | unsigned int cur_mask; | |
727 | ||
728 | reg = list_first_entry(pending, struct snd_soc_dapm_widget, | |
729 | power_list)->reg; | |
730 | ||
731 | list_for_each_entry(w, pending, power_list) { | |
732 | cur_mask = 1 << w->shift; | |
733 | BUG_ON(reg != w->reg); | |
734 | ||
735 | if (w->invert) | |
736 | power = !w->power; | |
737 | else | |
738 | power = w->power; | |
739 | ||
740 | mask |= cur_mask; | |
741 | if (power) | |
742 | value |= cur_mask; | |
743 | ||
ce6120cc | 744 | pop_dbg(dapm->pop_time, |
b22ead2a MB |
745 | "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n", |
746 | w->name, reg, value, mask); | |
81628103 MB |
747 | |
748 | /* power up pre event */ | |
749 | if (w->power && w->event && | |
750 | (w->event_flags & SND_SOC_DAPM_PRE_PMU)) { | |
ce6120cc | 751 | pop_dbg(dapm->pop_time, "pop test : %s PRE_PMU\n", |
81628103 MB |
752 | w->name); |
753 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMU); | |
42aa3418 | 754 | if (ret < 0) |
81628103 MB |
755 | pr_err("%s: pre event failed: %d\n", |
756 | w->name, ret); | |
757 | } | |
758 | ||
759 | /* power down pre event */ | |
760 | if (!w->power && w->event && | |
761 | (w->event_flags & SND_SOC_DAPM_PRE_PMD)) { | |
ce6120cc | 762 | pop_dbg(dapm->pop_time, "pop test : %s PRE_PMD\n", |
81628103 MB |
763 | w->name); |
764 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMD); | |
42aa3418 | 765 | if (ret < 0) |
81628103 MB |
766 | pr_err("%s: pre event failed: %d\n", |
767 | w->name, ret); | |
42aa3418 | 768 | } |
81628103 MB |
769 | } |
770 | ||
771 | if (reg >= 0) { | |
ce6120cc | 772 | pop_dbg(dapm->pop_time, |
81628103 | 773 | "pop test : Applying 0x%x/0x%x to %x in %dms\n", |
ce6120cc LG |
774 | value, mask, reg, dapm->pop_time); |
775 | pop_wait(dapm->pop_time); | |
776 | snd_soc_update_bits(dapm->codec, reg, mask, value); | |
b22ead2a MB |
777 | } |
778 | ||
81628103 MB |
779 | list_for_each_entry(w, pending, power_list) { |
780 | /* power up post event */ | |
781 | if (w->power && w->event && | |
782 | (w->event_flags & SND_SOC_DAPM_POST_PMU)) { | |
ce6120cc | 783 | pop_dbg(dapm->pop_time, "pop test : %s POST_PMU\n", |
81628103 | 784 | w->name); |
42aa3418 MB |
785 | ret = w->event(w, |
786 | NULL, SND_SOC_DAPM_POST_PMU); | |
787 | if (ret < 0) | |
81628103 MB |
788 | pr_err("%s: post event failed: %d\n", |
789 | w->name, ret); | |
790 | } | |
791 | ||
792 | /* power down post event */ | |
793 | if (!w->power && w->event && | |
794 | (w->event_flags & SND_SOC_DAPM_POST_PMD)) { | |
ce6120cc | 795 | pop_dbg(dapm->pop_time, "pop test : %s POST_PMD\n", |
81628103 MB |
796 | w->name); |
797 | ret = w->event(w, NULL, SND_SOC_DAPM_POST_PMD); | |
42aa3418 | 798 | if (ret < 0) |
81628103 MB |
799 | pr_err("%s: post event failed: %d\n", |
800 | w->name, ret); | |
42aa3418 | 801 | } |
81628103 | 802 | } |
b22ead2a | 803 | } |
42aa3418 | 804 | |
b22ead2a MB |
805 | /* Apply a DAPM power sequence. |
806 | * | |
807 | * We walk over a pre-sorted list of widgets to apply power to. In | |
808 | * order to minimise the number of writes to the device required | |
809 | * multiple widgets will be updated in a single write where possible. | |
810 | * Currently anything that requires more than a single write is not | |
811 | * handled. | |
812 | */ | |
ce6120cc LG |
813 | static void dapm_seq_run(struct snd_soc_dapm_context *dapm, |
814 | struct list_head *list, int event, int sort[]) | |
b22ead2a MB |
815 | { |
816 | struct snd_soc_dapm_widget *w, *n; | |
817 | LIST_HEAD(pending); | |
818 | int cur_sort = -1; | |
819 | int cur_reg = SND_SOC_NOPM; | |
163cac06 MB |
820 | int ret; |
821 | ||
b22ead2a MB |
822 | list_for_each_entry_safe(w, n, list, power_list) { |
823 | ret = 0; | |
824 | ||
825 | /* Do we need to apply any queued changes? */ | |
826 | if (sort[w->id] != cur_sort || w->reg != cur_reg) { | |
827 | if (!list_empty(&pending)) | |
ce6120cc | 828 | dapm_seq_run_coalesced(dapm, &pending); |
b22ead2a MB |
829 | |
830 | INIT_LIST_HEAD(&pending); | |
831 | cur_sort = -1; | |
832 | cur_reg = SND_SOC_NOPM; | |
833 | } | |
834 | ||
163cac06 MB |
835 | switch (w->id) { |
836 | case snd_soc_dapm_pre: | |
837 | if (!w->event) | |
b22ead2a MB |
838 | list_for_each_entry_safe_continue(w, n, list, |
839 | power_list); | |
163cac06 | 840 | |
b22ead2a | 841 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
842 | ret = w->event(w, |
843 | NULL, SND_SOC_DAPM_PRE_PMU); | |
b22ead2a | 844 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
845 | ret = w->event(w, |
846 | NULL, SND_SOC_DAPM_PRE_PMD); | |
163cac06 MB |
847 | break; |
848 | ||
849 | case snd_soc_dapm_post: | |
850 | if (!w->event) | |
b22ead2a MB |
851 | list_for_each_entry_safe_continue(w, n, list, |
852 | power_list); | |
163cac06 | 853 | |
b22ead2a | 854 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
855 | ret = w->event(w, |
856 | NULL, SND_SOC_DAPM_POST_PMU); | |
b22ead2a | 857 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
858 | ret = w->event(w, |
859 | NULL, SND_SOC_DAPM_POST_PMD); | |
163cac06 MB |
860 | break; |
861 | ||
b22ead2a MB |
862 | case snd_soc_dapm_input: |
863 | case snd_soc_dapm_output: | |
864 | case snd_soc_dapm_hp: | |
865 | case snd_soc_dapm_mic: | |
866 | case snd_soc_dapm_line: | |
867 | case snd_soc_dapm_spk: | |
868 | /* No register support currently */ | |
163cac06 | 869 | ret = dapm_generic_apply_power(w); |
163cac06 | 870 | break; |
b22ead2a MB |
871 | |
872 | default: | |
81628103 MB |
873 | /* Queue it up for application */ |
874 | cur_sort = sort[w->id]; | |
875 | cur_reg = w->reg; | |
876 | list_move(&w->power_list, &pending); | |
877 | break; | |
163cac06 | 878 | } |
b22ead2a MB |
879 | |
880 | if (ret < 0) | |
881 | pr_err("Failed to apply widget power: %d\n", | |
882 | ret); | |
6ea31b9f | 883 | } |
b22ead2a MB |
884 | |
885 | if (!list_empty(&pending)) | |
ce6120cc | 886 | dapm_seq_run_coalesced(dapm, &pending); |
42aa3418 MB |
887 | } |
888 | ||
2b97eabc RP |
889 | /* |
890 | * Scan each dapm widget for complete audio path. | |
891 | * A complete path is a route that has valid endpoints i.e.:- | |
892 | * | |
893 | * o DAC to output pin. | |
894 | * o Input Pin to ADC. | |
895 | * o Input pin to Output pin (bypass, sidetone) | |
896 | * o DAC to ADC (loopback). | |
897 | */ | |
ce6120cc | 898 | static int dapm_power_widgets(struct snd_soc_dapm_context *dapm, int event) |
2b97eabc | 899 | { |
ce6120cc | 900 | struct snd_soc_card *card = dapm->codec->card; |
2b97eabc | 901 | struct snd_soc_dapm_widget *w; |
291f3bbc MB |
902 | LIST_HEAD(up_list); |
903 | LIST_HEAD(down_list); | |
6d3ddc81 | 904 | int ret = 0; |
38357ab2 | 905 | int power; |
452c5eaa | 906 | int sys_power = 0; |
6d3ddc81 | 907 | |
6d3ddc81 MB |
908 | /* Check which widgets we need to power and store them in |
909 | * lists indicating if they should be powered up or down. | |
910 | */ | |
ce6120cc | 911 | list_for_each_entry(w, &dapm->widgets, list) { |
6d3ddc81 MB |
912 | switch (w->id) { |
913 | case snd_soc_dapm_pre: | |
291f3bbc | 914 | dapm_seq_insert(w, &down_list, dapm_down_seq); |
6d3ddc81 MB |
915 | break; |
916 | case snd_soc_dapm_post: | |
291f3bbc | 917 | dapm_seq_insert(w, &up_list, dapm_up_seq); |
6d3ddc81 MB |
918 | break; |
919 | ||
920 | default: | |
921 | if (!w->power_check) | |
922 | continue; | |
923 | ||
9949788b | 924 | if (!w->force) |
50b6bce5 | 925 | power = w->power_check(w); |
9949788b MB |
926 | else |
927 | power = 1; | |
928 | if (power) | |
929 | sys_power = 1; | |
452c5eaa | 930 | |
6d3ddc81 MB |
931 | if (w->power == power) |
932 | continue; | |
933 | ||
934 | if (power) | |
291f3bbc | 935 | dapm_seq_insert(w, &up_list, dapm_up_seq); |
6d3ddc81 | 936 | else |
291f3bbc | 937 | dapm_seq_insert(w, &down_list, dapm_down_seq); |
6d3ddc81 MB |
938 | |
939 | w->power = power; | |
940 | break; | |
941 | } | |
2b97eabc RP |
942 | } |
943 | ||
b14b76a5 MB |
944 | /* If there are no DAPM widgets then try to figure out power from the |
945 | * event type. | |
946 | */ | |
ce6120cc | 947 | if (list_empty(&dapm->widgets)) { |
b14b76a5 MB |
948 | switch (event) { |
949 | case SND_SOC_DAPM_STREAM_START: | |
950 | case SND_SOC_DAPM_STREAM_RESUME: | |
951 | sys_power = 1; | |
952 | break; | |
50b6bce5 MB |
953 | case SND_SOC_DAPM_STREAM_SUSPEND: |
954 | sys_power = 0; | |
955 | break; | |
b14b76a5 | 956 | case SND_SOC_DAPM_STREAM_NOP: |
ce6120cc | 957 | switch (dapm->bias_level) { |
a96ca338 MB |
958 | case SND_SOC_BIAS_STANDBY: |
959 | case SND_SOC_BIAS_OFF: | |
960 | sys_power = 0; | |
961 | break; | |
962 | default: | |
963 | sys_power = 1; | |
964 | break; | |
965 | } | |
50b6bce5 | 966 | break; |
b14b76a5 MB |
967 | default: |
968 | break; | |
969 | } | |
970 | } | |
971 | ||
ce6120cc LG |
972 | if (sys_power && dapm->bias_level == SND_SOC_BIAS_OFF) { |
973 | ret = snd_soc_dapm_set_bias_level(card, dapm, | |
a96ca338 MB |
974 | SND_SOC_BIAS_STANDBY); |
975 | if (ret != 0) | |
976 | pr_err("Failed to turn on bias: %d\n", ret); | |
977 | } | |
978 | ||
452c5eaa | 979 | /* If we're changing to all on or all off then prepare */ |
ce6120cc LG |
980 | if ((sys_power && dapm->bias_level == SND_SOC_BIAS_STANDBY) || |
981 | (!sys_power && dapm->bias_level == SND_SOC_BIAS_ON)) { | |
982 | ret = snd_soc_dapm_set_bias_level(card, dapm, SND_SOC_BIAS_PREPARE); | |
452c5eaa MB |
983 | if (ret != 0) |
984 | pr_err("Failed to prepare bias: %d\n", ret); | |
985 | } | |
986 | ||
6d3ddc81 | 987 | /* Power down widgets first; try to avoid amplifying pops. */ |
ce6120cc | 988 | dapm_seq_run(dapm, &down_list, event, dapm_down_seq); |
2b97eabc | 989 | |
6d3ddc81 | 990 | /* Now power up. */ |
ce6120cc | 991 | dapm_seq_run(dapm, &up_list, event, dapm_up_seq); |
2b97eabc | 992 | |
452c5eaa | 993 | /* If we just powered the last thing off drop to standby bias */ |
ce6120cc LG |
994 | if (dapm->bias_level == SND_SOC_BIAS_PREPARE && !sys_power) { |
995 | ret = snd_soc_dapm_set_bias_level(card, dapm, SND_SOC_BIAS_STANDBY); | |
452c5eaa MB |
996 | if (ret != 0) |
997 | pr_err("Failed to apply standby bias: %d\n", ret); | |
998 | } | |
999 | ||
a96ca338 | 1000 | /* If we're in standby and can support bias off then do that */ |
ce6120cc LG |
1001 | if (dapm->bias_level == SND_SOC_BIAS_STANDBY && |
1002 | dapm->idle_bias_off) { | |
1003 | ret = snd_soc_dapm_set_bias_level(card, dapm, SND_SOC_BIAS_OFF); | |
a96ca338 MB |
1004 | if (ret != 0) |
1005 | pr_err("Failed to turn off bias: %d\n", ret); | |
1006 | } | |
1007 | ||
452c5eaa | 1008 | /* If we just powered up then move to active bias */ |
ce6120cc LG |
1009 | if (dapm->bias_level == SND_SOC_BIAS_PREPARE && sys_power) { |
1010 | ret = snd_soc_dapm_set_bias_level(card, dapm, SND_SOC_BIAS_ON); | |
452c5eaa MB |
1011 | if (ret != 0) |
1012 | pr_err("Failed to apply active bias: %d\n", ret); | |
1013 | } | |
1014 | ||
ce6120cc LG |
1015 | pop_dbg(dapm->pop_time, "DAPM sequencing finished, waiting %dms\n", |
1016 | dapm->pop_time); | |
1017 | pop_wait(dapm->pop_time); | |
cb507e7e | 1018 | |
42aa3418 | 1019 | return 0; |
2b97eabc RP |
1020 | } |
1021 | ||
79fb9387 MB |
1022 | #ifdef CONFIG_DEBUG_FS |
1023 | static int dapm_widget_power_open_file(struct inode *inode, struct file *file) | |
1024 | { | |
1025 | file->private_data = inode->i_private; | |
1026 | return 0; | |
1027 | } | |
1028 | ||
1029 | static ssize_t dapm_widget_power_read_file(struct file *file, | |
1030 | char __user *user_buf, | |
1031 | size_t count, loff_t *ppos) | |
1032 | { | |
1033 | struct snd_soc_dapm_widget *w = file->private_data; | |
1034 | char *buf; | |
1035 | int in, out; | |
1036 | ssize_t ret; | |
1037 | struct snd_soc_dapm_path *p = NULL; | |
1038 | ||
1039 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); | |
1040 | if (!buf) | |
1041 | return -ENOMEM; | |
1042 | ||
1043 | in = is_connected_input_ep(w); | |
ce6120cc | 1044 | dapm_clear_walk(w->dapm); |
79fb9387 | 1045 | out = is_connected_output_ep(w); |
ce6120cc | 1046 | dapm_clear_walk(w->dapm); |
79fb9387 | 1047 | |
d033c36a | 1048 | ret = snprintf(buf, PAGE_SIZE, "%s: %s in %d out %d", |
79fb9387 MB |
1049 | w->name, w->power ? "On" : "Off", in, out); |
1050 | ||
d033c36a MB |
1051 | if (w->reg >= 0) |
1052 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
1053 | " - R%d(0x%x) bit %d", | |
1054 | w->reg, w->reg, w->shift); | |
1055 | ||
1056 | ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n"); | |
1057 | ||
3eef08ba MB |
1058 | if (w->sname) |
1059 | ret += snprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n", | |
1060 | w->sname, | |
1061 | w->active ? "active" : "inactive"); | |
79fb9387 MB |
1062 | |
1063 | list_for_each_entry(p, &w->sources, list_sink) { | |
215edda3 MB |
1064 | if (p->connected && !p->connected(w, p->sink)) |
1065 | continue; | |
1066 | ||
79fb9387 MB |
1067 | if (p->connect) |
1068 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
1069 | " in %s %s\n", | |
1070 | p->name ? p->name : "static", | |
1071 | p->source->name); | |
1072 | } | |
1073 | list_for_each_entry(p, &w->sinks, list_source) { | |
215edda3 MB |
1074 | if (p->connected && !p->connected(w, p->sink)) |
1075 | continue; | |
1076 | ||
79fb9387 MB |
1077 | if (p->connect) |
1078 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
1079 | " out %s %s\n", | |
1080 | p->name ? p->name : "static", | |
1081 | p->sink->name); | |
1082 | } | |
1083 | ||
1084 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); | |
1085 | ||
1086 | kfree(buf); | |
1087 | return ret; | |
1088 | } | |
1089 | ||
1090 | static const struct file_operations dapm_widget_power_fops = { | |
1091 | .open = dapm_widget_power_open_file, | |
1092 | .read = dapm_widget_power_read_file, | |
6038f373 | 1093 | .llseek = default_llseek, |
79fb9387 MB |
1094 | }; |
1095 | ||
ce6120cc | 1096 | void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm) |
79fb9387 MB |
1097 | { |
1098 | struct snd_soc_dapm_widget *w; | |
1099 | struct dentry *d; | |
1100 | ||
ce6120cc | 1101 | if (!dapm->debugfs_dapm) |
79fb9387 MB |
1102 | return; |
1103 | ||
ce6120cc | 1104 | list_for_each_entry(w, &dapm->widgets, list) { |
79fb9387 MB |
1105 | if (!w->name) |
1106 | continue; | |
1107 | ||
1108 | d = debugfs_create_file(w->name, 0444, | |
ce6120cc | 1109 | dapm->debugfs_dapm, w, |
79fb9387 MB |
1110 | &dapm_widget_power_fops); |
1111 | if (!d) | |
1112 | printk(KERN_WARNING | |
1113 | "ASoC: Failed to create %s debugfs file\n", | |
1114 | w->name); | |
1115 | } | |
1116 | } | |
1117 | #else | |
ce6120cc | 1118 | void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm) |
79fb9387 MB |
1119 | { |
1120 | } | |
1121 | #endif | |
1122 | ||
2b97eabc | 1123 | /* test and update the power status of a mux widget */ |
d9c96cf3 | 1124 | static int dapm_mux_update_power(struct snd_soc_dapm_widget *widget, |
3a65577d MB |
1125 | struct snd_kcontrol *kcontrol, int change, |
1126 | int mux, struct soc_enum *e) | |
2b97eabc RP |
1127 | { |
1128 | struct snd_soc_dapm_path *path; | |
1129 | int found = 0; | |
1130 | ||
eff317d0 PU |
1131 | if (widget->id != snd_soc_dapm_mux && |
1132 | widget->id != snd_soc_dapm_value_mux) | |
2b97eabc RP |
1133 | return -ENODEV; |
1134 | ||
3a65577d | 1135 | if (!change) |
2b97eabc RP |
1136 | return 0; |
1137 | ||
1138 | /* find dapm widget path assoc with kcontrol */ | |
ce6120cc | 1139 | list_for_each_entry(path, &widget->dapm->paths, list) { |
2b97eabc RP |
1140 | if (path->kcontrol != kcontrol) |
1141 | continue; | |
1142 | ||
cb01e2b9 | 1143 | if (!path->name || !e->texts[mux]) |
2b97eabc RP |
1144 | continue; |
1145 | ||
1146 | found = 1; | |
1147 | /* we now need to match the string in the enum to the path */ | |
cb01e2b9 | 1148 | if (!(strcmp(path->name, e->texts[mux]))) |
2b97eabc RP |
1149 | path->connect = 1; /* new connection */ |
1150 | else | |
1151 | path->connect = 0; /* old connection must be powered down */ | |
1152 | } | |
1153 | ||
b91b8fa0 | 1154 | if (found) |
ce6120cc | 1155 | dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc RP |
1156 | |
1157 | return 0; | |
1158 | } | |
2b97eabc | 1159 | |
1b075e3f | 1160 | /* test and update the power status of a mixer or switch widget */ |
d9c96cf3 | 1161 | static int dapm_mixer_update_power(struct snd_soc_dapm_widget *widget, |
283375ce | 1162 | struct snd_kcontrol *kcontrol, int connect) |
2b97eabc RP |
1163 | { |
1164 | struct snd_soc_dapm_path *path; | |
1165 | int found = 0; | |
1166 | ||
1b075e3f | 1167 | if (widget->id != snd_soc_dapm_mixer && |
ca9c1aae | 1168 | widget->id != snd_soc_dapm_mixer_named_ctl && |
1b075e3f | 1169 | widget->id != snd_soc_dapm_switch) |
2b97eabc RP |
1170 | return -ENODEV; |
1171 | ||
2b97eabc | 1172 | /* find dapm widget path assoc with kcontrol */ |
ce6120cc | 1173 | list_for_each_entry(path, &widget->dapm->paths, list) { |
2b97eabc RP |
1174 | if (path->kcontrol != kcontrol) |
1175 | continue; | |
1176 | ||
1177 | /* found, now check type */ | |
1178 | found = 1; | |
283375ce | 1179 | path->connect = connect; |
2b97eabc RP |
1180 | break; |
1181 | } | |
1182 | ||
b91b8fa0 | 1183 | if (found) |
ce6120cc | 1184 | dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc RP |
1185 | |
1186 | return 0; | |
1187 | } | |
2b97eabc RP |
1188 | |
1189 | /* show dapm widget status in sys fs */ | |
1190 | static ssize_t dapm_widget_show(struct device *dev, | |
1191 | struct device_attribute *attr, char *buf) | |
1192 | { | |
f0fba2ad LG |
1193 | struct snd_soc_pcm_runtime *rtd = |
1194 | container_of(dev, struct snd_soc_pcm_runtime, dev); | |
1195 | struct snd_soc_codec *codec =rtd->codec; | |
2b97eabc RP |
1196 | struct snd_soc_dapm_widget *w; |
1197 | int count = 0; | |
1198 | char *state = "not set"; | |
1199 | ||
ce6120cc | 1200 | list_for_each_entry(w, &codec->dapm.widgets, list) { |
2b97eabc RP |
1201 | |
1202 | /* only display widgets that burnm power */ | |
1203 | switch (w->id) { | |
1204 | case snd_soc_dapm_hp: | |
1205 | case snd_soc_dapm_mic: | |
1206 | case snd_soc_dapm_spk: | |
1207 | case snd_soc_dapm_line: | |
1208 | case snd_soc_dapm_micbias: | |
1209 | case snd_soc_dapm_dac: | |
1210 | case snd_soc_dapm_adc: | |
1211 | case snd_soc_dapm_pga: | |
1212 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1213 | case snd_soc_dapm_mixer_named_ctl: |
246d0a17 | 1214 | case snd_soc_dapm_supply: |
2b97eabc RP |
1215 | if (w->name) |
1216 | count += sprintf(buf + count, "%s: %s\n", | |
1217 | w->name, w->power ? "On":"Off"); | |
1218 | break; | |
1219 | default: | |
1220 | break; | |
1221 | } | |
1222 | } | |
1223 | ||
ce6120cc | 1224 | switch (codec->dapm.bias_level) { |
0be9898a MB |
1225 | case SND_SOC_BIAS_ON: |
1226 | state = "On"; | |
2b97eabc | 1227 | break; |
0be9898a MB |
1228 | case SND_SOC_BIAS_PREPARE: |
1229 | state = "Prepare"; | |
2b97eabc | 1230 | break; |
0be9898a MB |
1231 | case SND_SOC_BIAS_STANDBY: |
1232 | state = "Standby"; | |
2b97eabc | 1233 | break; |
0be9898a MB |
1234 | case SND_SOC_BIAS_OFF: |
1235 | state = "Off"; | |
2b97eabc RP |
1236 | break; |
1237 | } | |
1238 | count += sprintf(buf + count, "PM State: %s\n", state); | |
1239 | ||
1240 | return count; | |
1241 | } | |
1242 | ||
1243 | static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL); | |
1244 | ||
1245 | int snd_soc_dapm_sys_add(struct device *dev) | |
1246 | { | |
12ef193d | 1247 | return device_create_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1248 | } |
1249 | ||
1250 | static void snd_soc_dapm_sys_remove(struct device *dev) | |
1251 | { | |
aef90843 | 1252 | device_remove_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1253 | } |
1254 | ||
1255 | /* free all dapm widgets and resources */ | |
ce6120cc | 1256 | static void dapm_free_widgets(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
1257 | { |
1258 | struct snd_soc_dapm_widget *w, *next_w; | |
1259 | struct snd_soc_dapm_path *p, *next_p; | |
1260 | ||
ce6120cc | 1261 | list_for_each_entry_safe(w, next_w, &dapm->widgets, list) { |
2b97eabc RP |
1262 | list_del(&w->list); |
1263 | kfree(w); | |
1264 | } | |
1265 | ||
ce6120cc | 1266 | list_for_each_entry_safe(p, next_p, &dapm->paths, list) { |
2b97eabc RP |
1267 | list_del(&p->list); |
1268 | kfree(p->long_name); | |
1269 | kfree(p); | |
1270 | } | |
1271 | } | |
1272 | ||
ce6120cc | 1273 | static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm, |
1649923d | 1274 | const char *pin, int status) |
a5302181 LG |
1275 | { |
1276 | struct snd_soc_dapm_widget *w; | |
1277 | ||
ce6120cc | 1278 | list_for_each_entry(w, &dapm->widgets, list) { |
a5302181 | 1279 | if (!strcmp(w->name, pin)) { |
ce6120cc | 1280 | pr_debug("dapm: %s: pin %s\n", dapm->codec->name, pin); |
a5302181 | 1281 | w->connected = status; |
5b9e87cc MB |
1282 | /* Allow disabling of forced pins */ |
1283 | if (status == 0) | |
1284 | w->force = 0; | |
a5302181 LG |
1285 | return 0; |
1286 | } | |
1287 | } | |
1288 | ||
ce6120cc LG |
1289 | pr_err("dapm: %s: configuring unknown pin %s\n", |
1290 | dapm->codec->name, pin); | |
a5302181 LG |
1291 | return -EINVAL; |
1292 | } | |
1293 | ||
2b97eabc | 1294 | /** |
a5302181 | 1295 | * snd_soc_dapm_sync - scan and power dapm paths |
ce6120cc | 1296 | * @dapm: DAPM context |
2b97eabc RP |
1297 | * |
1298 | * Walks all dapm audio paths and powers widgets according to their | |
1299 | * stream or path usage. | |
1300 | * | |
1301 | * Returns 0 for success. | |
1302 | */ | |
ce6120cc | 1303 | int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm) |
2b97eabc | 1304 | { |
ce6120cc | 1305 | return dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc | 1306 | } |
a5302181 | 1307 | EXPORT_SYMBOL_GPL(snd_soc_dapm_sync); |
2b97eabc | 1308 | |
ce6120cc | 1309 | static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm, |
215edda3 | 1310 | const struct snd_soc_dapm_route *route) |
2b97eabc RP |
1311 | { |
1312 | struct snd_soc_dapm_path *path; | |
1313 | struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w; | |
215edda3 MB |
1314 | const char *sink = route->sink; |
1315 | const char *control = route->control; | |
1316 | const char *source = route->source; | |
2b97eabc RP |
1317 | int ret = 0; |
1318 | ||
1319 | /* find src and dest widgets */ | |
ce6120cc | 1320 | list_for_each_entry(w, &dapm->widgets, list) { |
2b97eabc RP |
1321 | |
1322 | if (!wsink && !(strcmp(w->name, sink))) { | |
1323 | wsink = w; | |
1324 | continue; | |
1325 | } | |
1326 | if (!wsource && !(strcmp(w->name, source))) { | |
1327 | wsource = w; | |
1328 | } | |
1329 | } | |
1330 | ||
1331 | if (wsource == NULL || wsink == NULL) | |
1332 | return -ENODEV; | |
1333 | ||
1334 | path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL); | |
1335 | if (!path) | |
1336 | return -ENOMEM; | |
1337 | ||
1338 | path->source = wsource; | |
1339 | path->sink = wsink; | |
215edda3 | 1340 | path->connected = route->connected; |
2b97eabc RP |
1341 | INIT_LIST_HEAD(&path->list); |
1342 | INIT_LIST_HEAD(&path->list_source); | |
1343 | INIT_LIST_HEAD(&path->list_sink); | |
1344 | ||
1345 | /* check for external widgets */ | |
1346 | if (wsink->id == snd_soc_dapm_input) { | |
1347 | if (wsource->id == snd_soc_dapm_micbias || | |
1348 | wsource->id == snd_soc_dapm_mic || | |
087d53ab RC |
1349 | wsource->id == snd_soc_dapm_line || |
1350 | wsource->id == snd_soc_dapm_output) | |
2b97eabc RP |
1351 | wsink->ext = 1; |
1352 | } | |
1353 | if (wsource->id == snd_soc_dapm_output) { | |
1354 | if (wsink->id == snd_soc_dapm_spk || | |
1355 | wsink->id == snd_soc_dapm_hp || | |
1e39221e SF |
1356 | wsink->id == snd_soc_dapm_line || |
1357 | wsink->id == snd_soc_dapm_input) | |
2b97eabc RP |
1358 | wsource->ext = 1; |
1359 | } | |
1360 | ||
1361 | /* connect static paths */ | |
1362 | if (control == NULL) { | |
ce6120cc | 1363 | list_add(&path->list, &dapm->paths); |
2b97eabc RP |
1364 | list_add(&path->list_sink, &wsink->sources); |
1365 | list_add(&path->list_source, &wsource->sinks); | |
1366 | path->connect = 1; | |
1367 | return 0; | |
1368 | } | |
1369 | ||
1370 | /* connect dynamic paths */ | |
1371 | switch(wsink->id) { | |
1372 | case snd_soc_dapm_adc: | |
1373 | case snd_soc_dapm_dac: | |
1374 | case snd_soc_dapm_pga: | |
1375 | case snd_soc_dapm_input: | |
1376 | case snd_soc_dapm_output: | |
1377 | case snd_soc_dapm_micbias: | |
1378 | case snd_soc_dapm_vmid: | |
1379 | case snd_soc_dapm_pre: | |
1380 | case snd_soc_dapm_post: | |
246d0a17 | 1381 | case snd_soc_dapm_supply: |
010ff262 MB |
1382 | case snd_soc_dapm_aif_in: |
1383 | case snd_soc_dapm_aif_out: | |
ce6120cc | 1384 | list_add(&path->list, &dapm->paths); |
2b97eabc RP |
1385 | list_add(&path->list_sink, &wsink->sources); |
1386 | list_add(&path->list_source, &wsource->sinks); | |
1387 | path->connect = 1; | |
1388 | return 0; | |
1389 | case snd_soc_dapm_mux: | |
74155556 | 1390 | case snd_soc_dapm_value_mux: |
ce6120cc | 1391 | ret = dapm_connect_mux(dapm, wsource, wsink, path, control, |
2b97eabc RP |
1392 | &wsink->kcontrols[0]); |
1393 | if (ret != 0) | |
1394 | goto err; | |
1395 | break; | |
1396 | case snd_soc_dapm_switch: | |
1397 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1398 | case snd_soc_dapm_mixer_named_ctl: |
ce6120cc | 1399 | ret = dapm_connect_mixer(dapm, wsource, wsink, path, control); |
2b97eabc RP |
1400 | if (ret != 0) |
1401 | goto err; | |
1402 | break; | |
1403 | case snd_soc_dapm_hp: | |
1404 | case snd_soc_dapm_mic: | |
1405 | case snd_soc_dapm_line: | |
1406 | case snd_soc_dapm_spk: | |
ce6120cc | 1407 | list_add(&path->list, &dapm->paths); |
2b97eabc RP |
1408 | list_add(&path->list_sink, &wsink->sources); |
1409 | list_add(&path->list_source, &wsource->sinks); | |
1410 | path->connect = 0; | |
1411 | return 0; | |
1412 | } | |
1413 | return 0; | |
1414 | ||
1415 | err: | |
1416 | printk(KERN_WARNING "asoc: no dapm match for %s --> %s --> %s\n", source, | |
1417 | control, sink); | |
1418 | kfree(path); | |
1419 | return ret; | |
1420 | } | |
105f1c28 | 1421 | |
105f1c28 MB |
1422 | /** |
1423 | * snd_soc_dapm_add_routes - Add routes between DAPM widgets | |
ce6120cc | 1424 | * @dapm: DAPM context |
105f1c28 MB |
1425 | * @route: audio routes |
1426 | * @num: number of routes | |
1427 | * | |
1428 | * Connects 2 dapm widgets together via a named audio path. The sink is | |
1429 | * the widget receiving the audio signal, whilst the source is the sender | |
1430 | * of the audio signal. | |
1431 | * | |
1432 | * Returns 0 for success else error. On error all resources can be freed | |
1433 | * with a call to snd_soc_card_free(). | |
1434 | */ | |
ce6120cc | 1435 | int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm, |
105f1c28 MB |
1436 | const struct snd_soc_dapm_route *route, int num) |
1437 | { | |
1438 | int i, ret; | |
1439 | ||
1440 | for (i = 0; i < num; i++) { | |
ce6120cc | 1441 | ret = snd_soc_dapm_add_route(dapm, route); |
105f1c28 MB |
1442 | if (ret < 0) { |
1443 | printk(KERN_ERR "Failed to add route %s->%s\n", | |
1444 | route->source, | |
1445 | route->sink); | |
1446 | return ret; | |
1447 | } | |
1448 | route++; | |
1449 | } | |
1450 | ||
1451 | return 0; | |
1452 | } | |
1453 | EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes); | |
1454 | ||
2b97eabc RP |
1455 | /** |
1456 | * snd_soc_dapm_new_widgets - add new dapm widgets | |
ce6120cc | 1457 | * @dapm: DAPM context |
2b97eabc RP |
1458 | * |
1459 | * Checks the codec for any new dapm widgets and creates them if found. | |
1460 | * | |
1461 | * Returns 0 for success. | |
1462 | */ | |
ce6120cc | 1463 | int snd_soc_dapm_new_widgets(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
1464 | { |
1465 | struct snd_soc_dapm_widget *w; | |
1466 | ||
ce6120cc | 1467 | list_for_each_entry(w, &dapm->widgets, list) |
2b97eabc RP |
1468 | { |
1469 | if (w->new) | |
1470 | continue; | |
1471 | ||
1472 | switch(w->id) { | |
1473 | case snd_soc_dapm_switch: | |
1474 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1475 | case snd_soc_dapm_mixer_named_ctl: |
b75576d7 | 1476 | w->power_check = dapm_generic_check_power; |
ce6120cc | 1477 | dapm_new_mixer(dapm, w); |
2b97eabc RP |
1478 | break; |
1479 | case snd_soc_dapm_mux: | |
2e72f8e3 | 1480 | case snd_soc_dapm_value_mux: |
b75576d7 | 1481 | w->power_check = dapm_generic_check_power; |
ce6120cc | 1482 | dapm_new_mux(dapm, w); |
2b97eabc RP |
1483 | break; |
1484 | case snd_soc_dapm_adc: | |
010ff262 | 1485 | case snd_soc_dapm_aif_out: |
b75576d7 MB |
1486 | w->power_check = dapm_adc_check_power; |
1487 | break; | |
2b97eabc | 1488 | case snd_soc_dapm_dac: |
010ff262 | 1489 | case snd_soc_dapm_aif_in: |
b75576d7 MB |
1490 | w->power_check = dapm_dac_check_power; |
1491 | break; | |
2b97eabc | 1492 | case snd_soc_dapm_pga: |
b75576d7 | 1493 | w->power_check = dapm_generic_check_power; |
ce6120cc | 1494 | dapm_new_pga(dapm, w); |
2b97eabc RP |
1495 | break; |
1496 | case snd_soc_dapm_input: | |
1497 | case snd_soc_dapm_output: | |
1498 | case snd_soc_dapm_micbias: | |
1499 | case snd_soc_dapm_spk: | |
1500 | case snd_soc_dapm_hp: | |
1501 | case snd_soc_dapm_mic: | |
1502 | case snd_soc_dapm_line: | |
b75576d7 MB |
1503 | w->power_check = dapm_generic_check_power; |
1504 | break; | |
246d0a17 MB |
1505 | case snd_soc_dapm_supply: |
1506 | w->power_check = dapm_supply_check_power; | |
2b97eabc RP |
1507 | case snd_soc_dapm_vmid: |
1508 | case snd_soc_dapm_pre: | |
1509 | case snd_soc_dapm_post: | |
1510 | break; | |
1511 | } | |
1512 | w->new = 1; | |
1513 | } | |
1514 | ||
ce6120cc | 1515 | dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc RP |
1516 | return 0; |
1517 | } | |
1518 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets); | |
1519 | ||
1520 | /** | |
1521 | * snd_soc_dapm_get_volsw - dapm mixer get callback | |
1522 | * @kcontrol: mixer control | |
ac11a2b3 | 1523 | * @ucontrol: control element information |
2b97eabc RP |
1524 | * |
1525 | * Callback to get the value of a dapm mixer control. | |
1526 | * | |
1527 | * Returns 0 for success. | |
1528 | */ | |
1529 | int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol, | |
1530 | struct snd_ctl_elem_value *ucontrol) | |
1531 | { | |
1532 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
4eaa9819 JS |
1533 | struct soc_mixer_control *mc = |
1534 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
1535 | unsigned int reg = mc->reg; |
1536 | unsigned int shift = mc->shift; | |
1537 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1538 | int max = mc->max; |
815ecf8d JS |
1539 | unsigned int invert = mc->invert; |
1540 | unsigned int mask = (1 << fls(max)) - 1; | |
2b97eabc | 1541 | |
2b97eabc RP |
1542 | ucontrol->value.integer.value[0] = |
1543 | (snd_soc_read(widget->codec, reg) >> shift) & mask; | |
1544 | if (shift != rshift) | |
1545 | ucontrol->value.integer.value[1] = | |
1546 | (snd_soc_read(widget->codec, reg) >> rshift) & mask; | |
1547 | if (invert) { | |
1548 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1549 | max - ucontrol->value.integer.value[0]; |
2b97eabc RP |
1550 | if (shift != rshift) |
1551 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 1552 | max - ucontrol->value.integer.value[1]; |
2b97eabc RP |
1553 | } |
1554 | ||
1555 | return 0; | |
1556 | } | |
1557 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw); | |
1558 | ||
1559 | /** | |
1560 | * snd_soc_dapm_put_volsw - dapm mixer set callback | |
1561 | * @kcontrol: mixer control | |
ac11a2b3 | 1562 | * @ucontrol: control element information |
2b97eabc RP |
1563 | * |
1564 | * Callback to set the value of a dapm mixer control. | |
1565 | * | |
1566 | * Returns 0 for success. | |
1567 | */ | |
1568 | int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, | |
1569 | struct snd_ctl_elem_value *ucontrol) | |
1570 | { | |
1571 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
4eaa9819 JS |
1572 | struct soc_mixer_control *mc = |
1573 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
1574 | unsigned int reg = mc->reg; |
1575 | unsigned int shift = mc->shift; | |
1576 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1577 | int max = mc->max; |
815ecf8d JS |
1578 | unsigned int mask = (1 << fls(max)) - 1; |
1579 | unsigned int invert = mc->invert; | |
46f5822f | 1580 | unsigned int val, val2, val_mask; |
283375ce | 1581 | int connect; |
2b97eabc RP |
1582 | int ret; |
1583 | ||
1584 | val = (ucontrol->value.integer.value[0] & mask); | |
1585 | ||
1586 | if (invert) | |
a7a4ac86 | 1587 | val = max - val; |
2b97eabc RP |
1588 | val_mask = mask << shift; |
1589 | val = val << shift; | |
1590 | if (shift != rshift) { | |
1591 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1592 | if (invert) | |
a7a4ac86 | 1593 | val2 = max - val2; |
2b97eabc RP |
1594 | val_mask |= mask << rshift; |
1595 | val |= val2 << rshift; | |
1596 | } | |
1597 | ||
1598 | mutex_lock(&widget->codec->mutex); | |
1599 | widget->value = val; | |
1600 | ||
283375ce MB |
1601 | if (snd_soc_test_bits(widget->codec, reg, val_mask, val)) { |
1602 | if (val) | |
1603 | /* new connection */ | |
1604 | connect = invert ? 0:1; | |
1605 | else | |
1606 | /* old connection must be powered down */ | |
1607 | connect = invert ? 1:0; | |
1608 | ||
1609 | dapm_mixer_update_power(widget, kcontrol, connect); | |
1610 | } | |
1611 | ||
2b97eabc RP |
1612 | if (widget->event) { |
1613 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
9af6d956 LG |
1614 | ret = widget->event(widget, kcontrol, |
1615 | SND_SOC_DAPM_PRE_REG); | |
1616 | if (ret < 0) { | |
1617 | ret = 1; | |
2b97eabc | 1618 | goto out; |
9af6d956 | 1619 | } |
2b97eabc RP |
1620 | } |
1621 | ret = snd_soc_update_bits(widget->codec, reg, val_mask, val); | |
1622 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
9af6d956 LG |
1623 | ret = widget->event(widget, kcontrol, |
1624 | SND_SOC_DAPM_POST_REG); | |
2b97eabc RP |
1625 | } else |
1626 | ret = snd_soc_update_bits(widget->codec, reg, val_mask, val); | |
1627 | ||
1628 | out: | |
1629 | mutex_unlock(&widget->codec->mutex); | |
1630 | return ret; | |
1631 | } | |
1632 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw); | |
1633 | ||
1634 | /** | |
1635 | * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback | |
1636 | * @kcontrol: mixer control | |
ac11a2b3 | 1637 | * @ucontrol: control element information |
2b97eabc RP |
1638 | * |
1639 | * Callback to get the value of a dapm enumerated double mixer control. | |
1640 | * | |
1641 | * Returns 0 for success. | |
1642 | */ | |
1643 | int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol, | |
1644 | struct snd_ctl_elem_value *ucontrol) | |
1645 | { | |
1646 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1647 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
46f5822f | 1648 | unsigned int val, bitmask; |
2b97eabc | 1649 | |
f8ba0b7b | 1650 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
1651 | ; |
1652 | val = snd_soc_read(widget->codec, e->reg); | |
1653 | ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1); | |
1654 | if (e->shift_l != e->shift_r) | |
1655 | ucontrol->value.enumerated.item[1] = | |
1656 | (val >> e->shift_r) & (bitmask - 1); | |
1657 | ||
1658 | return 0; | |
1659 | } | |
1660 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double); | |
1661 | ||
1662 | /** | |
1663 | * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback | |
1664 | * @kcontrol: mixer control | |
ac11a2b3 | 1665 | * @ucontrol: control element information |
2b97eabc RP |
1666 | * |
1667 | * Callback to set the value of a dapm enumerated double mixer control. | |
1668 | * | |
1669 | * Returns 0 for success. | |
1670 | */ | |
1671 | int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, | |
1672 | struct snd_ctl_elem_value *ucontrol) | |
1673 | { | |
1674 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1675 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
3a65577d | 1676 | unsigned int val, mux, change; |
46f5822f | 1677 | unsigned int mask, bitmask; |
2b97eabc RP |
1678 | int ret = 0; |
1679 | ||
f8ba0b7b | 1680 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc | 1681 | ; |
f8ba0b7b | 1682 | if (ucontrol->value.enumerated.item[0] > e->max - 1) |
2b97eabc RP |
1683 | return -EINVAL; |
1684 | mux = ucontrol->value.enumerated.item[0]; | |
1685 | val = mux << e->shift_l; | |
1686 | mask = (bitmask - 1) << e->shift_l; | |
1687 | if (e->shift_l != e->shift_r) { | |
f8ba0b7b | 1688 | if (ucontrol->value.enumerated.item[1] > e->max - 1) |
2b97eabc RP |
1689 | return -EINVAL; |
1690 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
1691 | mask |= (bitmask - 1) << e->shift_r; | |
1692 | } | |
1693 | ||
1694 | mutex_lock(&widget->codec->mutex); | |
1695 | widget->value = val; | |
3a65577d MB |
1696 | change = snd_soc_test_bits(widget->codec, e->reg, mask, val); |
1697 | dapm_mux_update_power(widget, kcontrol, change, mux, e); | |
1642e3d4 MB |
1698 | |
1699 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
1700 | ret = widget->event(widget, | |
1701 | kcontrol, SND_SOC_DAPM_PRE_REG); | |
1702 | if (ret < 0) | |
1703 | goto out; | |
1704 | } | |
1705 | ||
1706 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1707 | ||
1708 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
1709 | ret = widget->event(widget, | |
1710 | kcontrol, SND_SOC_DAPM_POST_REG); | |
2b97eabc RP |
1711 | |
1712 | out: | |
1713 | mutex_unlock(&widget->codec->mutex); | |
1714 | return ret; | |
1715 | } | |
1716 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double); | |
1717 | ||
d2b247a8 MB |
1718 | /** |
1719 | * snd_soc_dapm_get_enum_virt - Get virtual DAPM mux | |
1720 | * @kcontrol: mixer control | |
1721 | * @ucontrol: control element information | |
1722 | * | |
1723 | * Returns 0 for success. | |
1724 | */ | |
1725 | int snd_soc_dapm_get_enum_virt(struct snd_kcontrol *kcontrol, | |
1726 | struct snd_ctl_elem_value *ucontrol) | |
1727 | { | |
1728 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1729 | ||
1730 | ucontrol->value.enumerated.item[0] = widget->value; | |
1731 | ||
1732 | return 0; | |
1733 | } | |
1734 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_virt); | |
1735 | ||
1736 | /** | |
1737 | * snd_soc_dapm_put_enum_virt - Set virtual DAPM mux | |
1738 | * @kcontrol: mixer control | |
1739 | * @ucontrol: control element information | |
1740 | * | |
1741 | * Returns 0 for success. | |
1742 | */ | |
1743 | int snd_soc_dapm_put_enum_virt(struct snd_kcontrol *kcontrol, | |
1744 | struct snd_ctl_elem_value *ucontrol) | |
1745 | { | |
1746 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1747 | struct soc_enum *e = | |
1748 | (struct soc_enum *)kcontrol->private_value; | |
1749 | int change; | |
1750 | int ret = 0; | |
1751 | ||
1752 | if (ucontrol->value.enumerated.item[0] >= e->max) | |
1753 | return -EINVAL; | |
1754 | ||
1755 | mutex_lock(&widget->codec->mutex); | |
1756 | ||
1757 | change = widget->value != ucontrol->value.enumerated.item[0]; | |
1758 | widget->value = ucontrol->value.enumerated.item[0]; | |
1759 | dapm_mux_update_power(widget, kcontrol, change, widget->value, e); | |
1760 | ||
1761 | mutex_unlock(&widget->codec->mutex); | |
1762 | return ret; | |
1763 | } | |
1764 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt); | |
1765 | ||
2e72f8e3 PU |
1766 | /** |
1767 | * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get | |
1768 | * callback | |
1769 | * @kcontrol: mixer control | |
1770 | * @ucontrol: control element information | |
1771 | * | |
1772 | * Callback to get the value of a dapm semi enumerated double mixer control. | |
1773 | * | |
1774 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
1775 | * used for handling bitfield coded enumeration for example. | |
1776 | * | |
1777 | * Returns 0 for success. | |
1778 | */ | |
1779 | int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol *kcontrol, | |
1780 | struct snd_ctl_elem_value *ucontrol) | |
1781 | { | |
1782 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
74155556 | 1783 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f | 1784 | unsigned int reg_val, val, mux; |
2e72f8e3 PU |
1785 | |
1786 | reg_val = snd_soc_read(widget->codec, e->reg); | |
1787 | val = (reg_val >> e->shift_l) & e->mask; | |
1788 | for (mux = 0; mux < e->max; mux++) { | |
1789 | if (val == e->values[mux]) | |
1790 | break; | |
1791 | } | |
1792 | ucontrol->value.enumerated.item[0] = mux; | |
1793 | if (e->shift_l != e->shift_r) { | |
1794 | val = (reg_val >> e->shift_r) & e->mask; | |
1795 | for (mux = 0; mux < e->max; mux++) { | |
1796 | if (val == e->values[mux]) | |
1797 | break; | |
1798 | } | |
1799 | ucontrol->value.enumerated.item[1] = mux; | |
1800 | } | |
1801 | ||
1802 | return 0; | |
1803 | } | |
1804 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double); | |
1805 | ||
1806 | /** | |
1807 | * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set | |
1808 | * callback | |
1809 | * @kcontrol: mixer control | |
1810 | * @ucontrol: control element information | |
1811 | * | |
1812 | * Callback to set the value of a dapm semi enumerated double mixer control. | |
1813 | * | |
1814 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
1815 | * used for handling bitfield coded enumeration for example. | |
1816 | * | |
1817 | * Returns 0 for success. | |
1818 | */ | |
1819 | int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol, | |
1820 | struct snd_ctl_elem_value *ucontrol) | |
1821 | { | |
1822 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
74155556 | 1823 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
3a65577d | 1824 | unsigned int val, mux, change; |
46f5822f | 1825 | unsigned int mask; |
2e72f8e3 PU |
1826 | int ret = 0; |
1827 | ||
1828 | if (ucontrol->value.enumerated.item[0] > e->max - 1) | |
1829 | return -EINVAL; | |
1830 | mux = ucontrol->value.enumerated.item[0]; | |
1831 | val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l; | |
1832 | mask = e->mask << e->shift_l; | |
1833 | if (e->shift_l != e->shift_r) { | |
1834 | if (ucontrol->value.enumerated.item[1] > e->max - 1) | |
1835 | return -EINVAL; | |
1836 | val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r; | |
1837 | mask |= e->mask << e->shift_r; | |
1838 | } | |
1839 | ||
1840 | mutex_lock(&widget->codec->mutex); | |
1841 | widget->value = val; | |
3a65577d MB |
1842 | change = snd_soc_test_bits(widget->codec, e->reg, mask, val); |
1843 | dapm_mux_update_power(widget, kcontrol, change, mux, e); | |
1642e3d4 MB |
1844 | |
1845 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { | |
1846 | ret = widget->event(widget, | |
1847 | kcontrol, SND_SOC_DAPM_PRE_REG); | |
1848 | if (ret < 0) | |
1849 | goto out; | |
1850 | } | |
1851 | ||
1852 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); | |
1853 | ||
1854 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) | |
1855 | ret = widget->event(widget, | |
1856 | kcontrol, SND_SOC_DAPM_POST_REG); | |
2e72f8e3 PU |
1857 | |
1858 | out: | |
1859 | mutex_unlock(&widget->codec->mutex); | |
1860 | return ret; | |
1861 | } | |
1862 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double); | |
1863 | ||
8b37dbd2 MB |
1864 | /** |
1865 | * snd_soc_dapm_info_pin_switch - Info for a pin switch | |
1866 | * | |
1867 | * @kcontrol: mixer control | |
1868 | * @uinfo: control element information | |
1869 | * | |
1870 | * Callback to provide information about a pin switch control. | |
1871 | */ | |
1872 | int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol, | |
1873 | struct snd_ctl_elem_info *uinfo) | |
1874 | { | |
1875 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1876 | uinfo->count = 1; | |
1877 | uinfo->value.integer.min = 0; | |
1878 | uinfo->value.integer.max = 1; | |
1879 | ||
1880 | return 0; | |
1881 | } | |
1882 | EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch); | |
1883 | ||
1884 | /** | |
1885 | * snd_soc_dapm_get_pin_switch - Get information for a pin switch | |
1886 | * | |
1887 | * @kcontrol: mixer control | |
1888 | * @ucontrol: Value | |
1889 | */ | |
1890 | int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol, | |
1891 | struct snd_ctl_elem_value *ucontrol) | |
1892 | { | |
1893 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1894 | const char *pin = (const char *)kcontrol->private_value; | |
1895 | ||
1896 | mutex_lock(&codec->mutex); | |
1897 | ||
1898 | ucontrol->value.integer.value[0] = | |
ce6120cc | 1899 | snd_soc_dapm_get_pin_status(&codec->dapm, pin); |
8b37dbd2 MB |
1900 | |
1901 | mutex_unlock(&codec->mutex); | |
1902 | ||
1903 | return 0; | |
1904 | } | |
1905 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch); | |
1906 | ||
1907 | /** | |
1908 | * snd_soc_dapm_put_pin_switch - Set information for a pin switch | |
1909 | * | |
1910 | * @kcontrol: mixer control | |
1911 | * @ucontrol: Value | |
1912 | */ | |
1913 | int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol, | |
1914 | struct snd_ctl_elem_value *ucontrol) | |
1915 | { | |
1916 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1917 | const char *pin = (const char *)kcontrol->private_value; | |
1918 | ||
1919 | mutex_lock(&codec->mutex); | |
1920 | ||
1921 | if (ucontrol->value.integer.value[0]) | |
ce6120cc | 1922 | snd_soc_dapm_enable_pin(&codec->dapm, pin); |
8b37dbd2 | 1923 | else |
ce6120cc | 1924 | snd_soc_dapm_disable_pin(&codec->dapm, pin); |
8b37dbd2 | 1925 | |
ce6120cc | 1926 | snd_soc_dapm_sync(&codec->dapm); |
8b37dbd2 MB |
1927 | |
1928 | mutex_unlock(&codec->mutex); | |
1929 | ||
1930 | return 0; | |
1931 | } | |
1932 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch); | |
1933 | ||
2b97eabc RP |
1934 | /** |
1935 | * snd_soc_dapm_new_control - create new dapm control | |
ce6120cc | 1936 | * @dapm: DAPM context |
2b97eabc RP |
1937 | * @widget: widget template |
1938 | * | |
1939 | * Creates a new dapm control based upon the template. | |
1940 | * | |
1941 | * Returns 0 for success else error. | |
1942 | */ | |
ce6120cc | 1943 | int snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
1944 | const struct snd_soc_dapm_widget *widget) |
1945 | { | |
1946 | struct snd_soc_dapm_widget *w; | |
1947 | ||
1948 | if ((w = dapm_cnew_widget(widget)) == NULL) | |
1949 | return -ENOMEM; | |
1950 | ||
ce6120cc LG |
1951 | w->dapm = dapm; |
1952 | w->codec = dapm->codec; | |
2b97eabc RP |
1953 | INIT_LIST_HEAD(&w->sources); |
1954 | INIT_LIST_HEAD(&w->sinks); | |
1955 | INIT_LIST_HEAD(&w->list); | |
ce6120cc | 1956 | list_add(&w->list, &dapm->widgets); |
2b97eabc RP |
1957 | |
1958 | /* machine layer set ups unconnected pins and insertions */ | |
1959 | w->connected = 1; | |
1960 | return 0; | |
1961 | } | |
1962 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control); | |
1963 | ||
4ba1327a MB |
1964 | /** |
1965 | * snd_soc_dapm_new_controls - create new dapm controls | |
ce6120cc | 1966 | * @dapm: DAPM context |
4ba1327a MB |
1967 | * @widget: widget array |
1968 | * @num: number of widgets | |
1969 | * | |
1970 | * Creates new DAPM controls based upon the templates. | |
1971 | * | |
1972 | * Returns 0 for success else error. | |
1973 | */ | |
ce6120cc | 1974 | int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm, |
4ba1327a MB |
1975 | const struct snd_soc_dapm_widget *widget, |
1976 | int num) | |
1977 | { | |
1978 | int i, ret; | |
1979 | ||
1980 | for (i = 0; i < num; i++) { | |
ce6120cc | 1981 | ret = snd_soc_dapm_new_control(dapm, widget); |
b8b33cb5 MB |
1982 | if (ret < 0) { |
1983 | printk(KERN_ERR | |
1984 | "ASoC: Failed to create DAPM control %s: %d\n", | |
1985 | widget->name, ret); | |
4ba1327a | 1986 | return ret; |
b8b33cb5 | 1987 | } |
4ba1327a MB |
1988 | widget++; |
1989 | } | |
1990 | return 0; | |
1991 | } | |
1992 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls); | |
1993 | ||
ce6120cc | 1994 | static void soc_dapm_stream_event(struct snd_soc_dapm_context *dapm, |
f0fba2ad | 1995 | const char *stream, int event) |
2b97eabc RP |
1996 | { |
1997 | struct snd_soc_dapm_widget *w; | |
1998 | ||
ce6120cc | 1999 | list_for_each_entry(w, &dapm->widgets, list) |
2b97eabc RP |
2000 | { |
2001 | if (!w->sname) | |
2002 | continue; | |
c1286b86 MB |
2003 | pr_debug("widget %s\n %s stream %s event %d\n", |
2004 | w->name, w->sname, stream, event); | |
2b97eabc RP |
2005 | if (strstr(w->sname, stream)) { |
2006 | switch(event) { | |
2007 | case SND_SOC_DAPM_STREAM_START: | |
2008 | w->active = 1; | |
2009 | break; | |
2010 | case SND_SOC_DAPM_STREAM_STOP: | |
2011 | w->active = 0; | |
2012 | break; | |
2013 | case SND_SOC_DAPM_STREAM_SUSPEND: | |
2b97eabc | 2014 | case SND_SOC_DAPM_STREAM_RESUME: |
2b97eabc | 2015 | case SND_SOC_DAPM_STREAM_PAUSE_PUSH: |
2b97eabc RP |
2016 | case SND_SOC_DAPM_STREAM_PAUSE_RELEASE: |
2017 | break; | |
2018 | } | |
2019 | } | |
2020 | } | |
2b97eabc | 2021 | |
ce6120cc LG |
2022 | dapm_power_widgets(dapm, event); |
2023 | } | |
2024 | ||
2025 | /** | |
2026 | * snd_soc_dapm_stream_event - send a stream event to the dapm core | |
2027 | * @rtd: PCM runtime data | |
2028 | * @stream: stream name | |
2029 | * @event: stream event | |
2030 | * | |
2031 | * Sends a stream event to the dapm core. The core then makes any | |
2032 | * necessary widget power changes. | |
2033 | * | |
2034 | * Returns 0 for success else error. | |
2035 | */ | |
2036 | int snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, | |
2037 | const char *stream, int event) | |
2038 | { | |
2039 | struct snd_soc_codec *codec = rtd->codec; | |
2040 | ||
2041 | if (stream == NULL) | |
2042 | return 0; | |
2043 | ||
2044 | mutex_lock(&codec->mutex); | |
2045 | soc_dapm_stream_event(&codec->dapm, stream, event); | |
8e8b2d67 | 2046 | mutex_unlock(&codec->mutex); |
2b97eabc RP |
2047 | return 0; |
2048 | } | |
2049 | EXPORT_SYMBOL_GPL(snd_soc_dapm_stream_event); | |
2050 | ||
2051 | /** | |
a5302181 | 2052 | * snd_soc_dapm_enable_pin - enable pin. |
ce6120cc | 2053 | * @dapm: DAPM context |
a5302181 | 2054 | * @pin: pin name |
2b97eabc | 2055 | * |
74b8f955 | 2056 | * Enables input/output pin and its parents or children widgets iff there is |
a5302181 LG |
2057 | * a valid audio route and active audio stream. |
2058 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2059 | * do any widget power switching. | |
2b97eabc | 2060 | */ |
ce6120cc | 2061 | int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin) |
2b97eabc | 2062 | { |
ce6120cc | 2063 | return snd_soc_dapm_set_pin(dapm, pin, 1); |
a5302181 LG |
2064 | } |
2065 | EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin); | |
2b97eabc | 2066 | |
da34183e MB |
2067 | /** |
2068 | * snd_soc_dapm_force_enable_pin - force a pin to be enabled | |
ce6120cc | 2069 | * @dapm: DAPM context |
da34183e MB |
2070 | * @pin: pin name |
2071 | * | |
2072 | * Enables input/output pin regardless of any other state. This is | |
2073 | * intended for use with microphone bias supplies used in microphone | |
2074 | * jack detection. | |
2075 | * | |
2076 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2077 | * do any widget power switching. | |
2078 | */ | |
ce6120cc LG |
2079 | int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm, |
2080 | const char *pin) | |
da34183e MB |
2081 | { |
2082 | struct snd_soc_dapm_widget *w; | |
2083 | ||
ce6120cc | 2084 | list_for_each_entry(w, &dapm->widgets, list) { |
da34183e | 2085 | if (!strcmp(w->name, pin)) { |
ce6120cc | 2086 | pr_debug("dapm: %s: pin %s\n", dapm->codec->name, pin); |
da34183e MB |
2087 | w->connected = 1; |
2088 | w->force = 1; | |
2089 | return 0; | |
2090 | } | |
2091 | } | |
2092 | ||
ce6120cc LG |
2093 | pr_err("dapm: %s: configuring unknown pin %s\n", |
2094 | dapm->codec->name, pin); | |
da34183e MB |
2095 | return -EINVAL; |
2096 | } | |
2097 | EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin); | |
2098 | ||
a5302181 LG |
2099 | /** |
2100 | * snd_soc_dapm_disable_pin - disable pin. | |
ce6120cc | 2101 | * @dapm: DAPM context |
a5302181 LG |
2102 | * @pin: pin name |
2103 | * | |
74b8f955 | 2104 | * Disables input/output pin and its parents or children widgets. |
a5302181 LG |
2105 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to |
2106 | * do any widget power switching. | |
2107 | */ | |
ce6120cc LG |
2108 | int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm, |
2109 | const char *pin) | |
a5302181 | 2110 | { |
ce6120cc | 2111 | return snd_soc_dapm_set_pin(dapm, pin, 0); |
2b97eabc | 2112 | } |
a5302181 | 2113 | EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin); |
2b97eabc | 2114 | |
5817b52a MB |
2115 | /** |
2116 | * snd_soc_dapm_nc_pin - permanently disable pin. | |
ce6120cc | 2117 | * @dapm: DAPM context |
5817b52a MB |
2118 | * @pin: pin name |
2119 | * | |
2120 | * Marks the specified pin as being not connected, disabling it along | |
2121 | * any parent or child widgets. At present this is identical to | |
2122 | * snd_soc_dapm_disable_pin() but in future it will be extended to do | |
2123 | * additional things such as disabling controls which only affect | |
2124 | * paths through the pin. | |
2125 | * | |
2126 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2127 | * do any widget power switching. | |
2128 | */ | |
ce6120cc | 2129 | int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin) |
5817b52a | 2130 | { |
ce6120cc | 2131 | return snd_soc_dapm_set_pin(dapm, pin, 0); |
5817b52a MB |
2132 | } |
2133 | EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin); | |
2134 | ||
eeec12bf | 2135 | /** |
a5302181 | 2136 | * snd_soc_dapm_get_pin_status - get audio pin status |
ce6120cc | 2137 | * @dapm: DAPM context |
a5302181 | 2138 | * @pin: audio signal pin endpoint (or start point) |
eeec12bf | 2139 | * |
a5302181 | 2140 | * Get audio pin status - connected or disconnected. |
eeec12bf | 2141 | * |
a5302181 | 2142 | * Returns 1 for connected otherwise 0. |
eeec12bf | 2143 | */ |
ce6120cc LG |
2144 | int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm, |
2145 | const char *pin) | |
eeec12bf GG |
2146 | { |
2147 | struct snd_soc_dapm_widget *w; | |
2148 | ||
ce6120cc | 2149 | list_for_each_entry(w, &dapm->widgets, list) { |
a5302181 | 2150 | if (!strcmp(w->name, pin)) |
eeec12bf GG |
2151 | return w->connected; |
2152 | } | |
2153 | ||
2154 | return 0; | |
2155 | } | |
a5302181 | 2156 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status); |
eeec12bf | 2157 | |
1547aba9 MB |
2158 | /** |
2159 | * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint | |
ce6120cc | 2160 | * @dapm: DAPM context |
1547aba9 MB |
2161 | * @pin: audio signal pin endpoint (or start point) |
2162 | * | |
2163 | * Mark the given endpoint or pin as ignoring suspend. When the | |
2164 | * system is disabled a path between two endpoints flagged as ignoring | |
2165 | * suspend will not be disabled. The path must already be enabled via | |
2166 | * normal means at suspend time, it will not be turned on if it was not | |
2167 | * already enabled. | |
2168 | */ | |
ce6120cc LG |
2169 | int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm, |
2170 | const char *pin) | |
1547aba9 MB |
2171 | { |
2172 | struct snd_soc_dapm_widget *w; | |
2173 | ||
ce6120cc | 2174 | list_for_each_entry(w, &dapm->widgets, list) { |
1547aba9 MB |
2175 | if (!strcmp(w->name, pin)) { |
2176 | w->ignore_suspend = 1; | |
2177 | return 0; | |
2178 | } | |
2179 | } | |
2180 | ||
2181 | pr_err("Unknown DAPM pin: %s\n", pin); | |
2182 | return -EINVAL; | |
2183 | } | |
2184 | EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend); | |
2185 | ||
2b97eabc RP |
2186 | /** |
2187 | * snd_soc_dapm_free - free dapm resources | |
f0fba2ad | 2188 | * @card: SoC device |
2b97eabc RP |
2189 | * |
2190 | * Free all dapm widgets and resources. | |
2191 | */ | |
ce6120cc | 2192 | void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm) |
2b97eabc | 2193 | { |
ce6120cc LG |
2194 | snd_soc_dapm_sys_remove(dapm->dev); |
2195 | dapm_free_widgets(dapm); | |
2b97eabc RP |
2196 | } |
2197 | EXPORT_SYMBOL_GPL(snd_soc_dapm_free); | |
2198 | ||
ce6120cc | 2199 | static void soc_dapm_shutdown_codec(struct snd_soc_dapm_context *dapm) |
51737470 | 2200 | { |
51737470 MB |
2201 | struct snd_soc_dapm_widget *w; |
2202 | LIST_HEAD(down_list); | |
2203 | int powerdown = 0; | |
2204 | ||
ce6120cc | 2205 | list_for_each_entry(w, &dapm->widgets, list) { |
51737470 MB |
2206 | if (w->power) { |
2207 | dapm_seq_insert(w, &down_list, dapm_down_seq); | |
c2caa4da | 2208 | w->power = 0; |
51737470 MB |
2209 | powerdown = 1; |
2210 | } | |
2211 | } | |
2212 | ||
2213 | /* If there were no widgets to power down we're already in | |
2214 | * standby. | |
2215 | */ | |
2216 | if (powerdown) { | |
ce6120cc LG |
2217 | snd_soc_dapm_set_bias_level(NULL, dapm, SND_SOC_BIAS_PREPARE); |
2218 | dapm_seq_run(dapm, &down_list, 0, dapm_down_seq); | |
2219 | snd_soc_dapm_set_bias_level(NULL, dapm, SND_SOC_BIAS_STANDBY); | |
51737470 | 2220 | } |
f0fba2ad LG |
2221 | } |
2222 | ||
2223 | /* | |
2224 | * snd_soc_dapm_shutdown - callback for system shutdown | |
2225 | */ | |
2226 | void snd_soc_dapm_shutdown(struct snd_soc_card *card) | |
2227 | { | |
2228 | struct snd_soc_codec *codec; | |
2229 | ||
ce6120cc LG |
2230 | list_for_each_entry(codec, &card->codec_dev_list, list) { |
2231 | soc_dapm_shutdown_codec(&codec->dapm); | |
2232 | snd_soc_dapm_set_bias_level(card, &codec->dapm, SND_SOC_BIAS_OFF); | |
2233 | } | |
51737470 MB |
2234 | } |
2235 | ||
2b97eabc | 2236 | /* Module information */ |
d331124d | 2237 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
2b97eabc RP |
2238 | MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC"); |
2239 | MODULE_LICENSE("GPL"); |