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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> | |
9d0624a7 | 35 | #include <linux/async.h> |
2b97eabc RP |
36 | #include <linux/delay.h> |
37 | #include <linux/pm.h> | |
38 | #include <linux/bitops.h> | |
39 | #include <linux/platform_device.h> | |
40 | #include <linux/jiffies.h> | |
20496ff3 | 41 | #include <linux/debugfs.h> |
5a0e3ad6 | 42 | #include <linux/slab.h> |
2b97eabc RP |
43 | #include <sound/core.h> |
44 | #include <sound/pcm.h> | |
45 | #include <sound/pcm_params.h> | |
ce6120cc | 46 | #include <sound/soc.h> |
2b97eabc RP |
47 | #include <sound/initval.h> |
48 | ||
84e90930 MB |
49 | #include <trace/events/asoc.h> |
50 | ||
2b97eabc RP |
51 | /* dapm power sequences - make this per codec in the future */ |
52 | static int dapm_up_seq[] = { | |
38357ab2 MB |
53 | [snd_soc_dapm_pre] = 0, |
54 | [snd_soc_dapm_supply] = 1, | |
55 | [snd_soc_dapm_micbias] = 2, | |
010ff262 MB |
56 | [snd_soc_dapm_aif_in] = 3, |
57 | [snd_soc_dapm_aif_out] = 3, | |
58 | [snd_soc_dapm_mic] = 4, | |
59 | [snd_soc_dapm_mux] = 5, | |
24ff33ac | 60 | [snd_soc_dapm_virt_mux] = 5, |
010ff262 MB |
61 | [snd_soc_dapm_value_mux] = 5, |
62 | [snd_soc_dapm_dac] = 6, | |
63 | [snd_soc_dapm_mixer] = 7, | |
64 | [snd_soc_dapm_mixer_named_ctl] = 7, | |
65 | [snd_soc_dapm_pga] = 8, | |
66 | [snd_soc_dapm_adc] = 9, | |
d88429a6 | 67 | [snd_soc_dapm_out_drv] = 10, |
010ff262 MB |
68 | [snd_soc_dapm_hp] = 10, |
69 | [snd_soc_dapm_spk] = 10, | |
70 | [snd_soc_dapm_post] = 11, | |
2b97eabc | 71 | }; |
ca9c1aae | 72 | |
2b97eabc | 73 | static int dapm_down_seq[] = { |
38357ab2 MB |
74 | [snd_soc_dapm_pre] = 0, |
75 | [snd_soc_dapm_adc] = 1, | |
76 | [snd_soc_dapm_hp] = 2, | |
1ca04065 | 77 | [snd_soc_dapm_spk] = 2, |
d88429a6 | 78 | [snd_soc_dapm_out_drv] = 2, |
38357ab2 MB |
79 | [snd_soc_dapm_pga] = 4, |
80 | [snd_soc_dapm_mixer_named_ctl] = 5, | |
e3d4dabd MB |
81 | [snd_soc_dapm_mixer] = 5, |
82 | [snd_soc_dapm_dac] = 6, | |
83 | [snd_soc_dapm_mic] = 7, | |
84 | [snd_soc_dapm_micbias] = 8, | |
85 | [snd_soc_dapm_mux] = 9, | |
24ff33ac | 86 | [snd_soc_dapm_virt_mux] = 9, |
e3d4dabd | 87 | [snd_soc_dapm_value_mux] = 9, |
010ff262 MB |
88 | [snd_soc_dapm_aif_in] = 10, |
89 | [snd_soc_dapm_aif_out] = 10, | |
90 | [snd_soc_dapm_supply] = 11, | |
91 | [snd_soc_dapm_post] = 12, | |
2b97eabc RP |
92 | }; |
93 | ||
12ef193d | 94 | static void pop_wait(u32 pop_time) |
15e4c72f MB |
95 | { |
96 | if (pop_time) | |
97 | schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time)); | |
98 | } | |
99 | ||
fd8d3bc0 | 100 | static void pop_dbg(struct device *dev, u32 pop_time, const char *fmt, ...) |
15e4c72f MB |
101 | { |
102 | va_list args; | |
fd8d3bc0 | 103 | char *buf; |
15e4c72f | 104 | |
fd8d3bc0 JN |
105 | if (!pop_time) |
106 | return; | |
15e4c72f | 107 | |
fd8d3bc0 JN |
108 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); |
109 | if (buf == NULL) | |
110 | return; | |
15e4c72f | 111 | |
fd8d3bc0 JN |
112 | va_start(args, fmt); |
113 | vsnprintf(buf, PAGE_SIZE, fmt, args); | |
9d01df06 | 114 | dev_info(dev, "%s", buf); |
15e4c72f | 115 | va_end(args); |
fd8d3bc0 JN |
116 | |
117 | kfree(buf); | |
15e4c72f MB |
118 | } |
119 | ||
2b97eabc | 120 | /* create a new dapm widget */ |
88cb4290 | 121 | static inline struct snd_soc_dapm_widget *dapm_cnew_widget( |
2b97eabc RP |
122 | const struct snd_soc_dapm_widget *_widget) |
123 | { | |
88cb4290 | 124 | return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL); |
2b97eabc RP |
125 | } |
126 | ||
4805608a LG |
127 | /* get snd_card from DAPM context */ |
128 | static inline struct snd_card *dapm_get_snd_card( | |
129 | struct snd_soc_dapm_context *dapm) | |
130 | { | |
131 | if (dapm->codec) | |
132 | return dapm->codec->card->snd_card; | |
133 | else if (dapm->platform) | |
134 | return dapm->platform->card->snd_card; | |
135 | else | |
136 | BUG(); | |
137 | ||
138 | /* unreachable */ | |
139 | return NULL; | |
140 | } | |
141 | ||
142 | /* get soc_card from DAPM context */ | |
143 | static inline struct snd_soc_card *dapm_get_soc_card( | |
144 | struct snd_soc_dapm_context *dapm) | |
145 | { | |
146 | if (dapm->codec) | |
147 | return dapm->codec->card; | |
148 | else if (dapm->platform) | |
149 | return dapm->platform->card; | |
150 | else | |
151 | BUG(); | |
152 | ||
153 | /* unreachable */ | |
154 | return NULL; | |
155 | } | |
156 | ||
0445bdf4 LG |
157 | static int soc_widget_read(struct snd_soc_dapm_widget *w, int reg) |
158 | { | |
159 | if (w->codec) | |
160 | return snd_soc_read(w->codec, reg); | |
b7950641 LG |
161 | else if (w->platform) |
162 | return snd_soc_platform_read(w->platform, reg); | |
163 | ||
164 | dev_err(w->dapm->dev, "no valid widget read method\n"); | |
165 | return -1; | |
0445bdf4 LG |
166 | } |
167 | ||
168 | static int soc_widget_write(struct snd_soc_dapm_widget *w, int reg, int val) | |
169 | { | |
170 | if (w->codec) | |
171 | return snd_soc_write(w->codec, reg, val); | |
b7950641 LG |
172 | else if (w->platform) |
173 | return snd_soc_platform_write(w->platform, reg, val); | |
174 | ||
175 | dev_err(w->dapm->dev, "no valid widget write method\n"); | |
176 | return -1; | |
0445bdf4 LG |
177 | } |
178 | ||
179 | static int soc_widget_update_bits(struct snd_soc_dapm_widget *w, | |
180 | unsigned short reg, unsigned int mask, unsigned int value) | |
181 | { | |
182 | int change; | |
183 | unsigned int old, new; | |
184 | int ret; | |
185 | ||
186 | ret = soc_widget_read(w, reg); | |
187 | if (ret < 0) | |
188 | return ret; | |
189 | ||
190 | old = ret; | |
191 | new = (old & ~mask) | (value & mask); | |
192 | change = old != new; | |
193 | if (change) { | |
194 | ret = soc_widget_write(w, reg, new); | |
195 | if (ret < 0) | |
196 | return ret; | |
197 | } | |
198 | ||
199 | return change; | |
200 | } | |
201 | ||
452c5eaa MB |
202 | /** |
203 | * snd_soc_dapm_set_bias_level - set the bias level for the system | |
ed5a4c47 | 204 | * @dapm: DAPM context |
452c5eaa MB |
205 | * @level: level to configure |
206 | * | |
207 | * Configure the bias (power) levels for the SoC audio device. | |
208 | * | |
209 | * Returns 0 for success else error. | |
210 | */ | |
ed5a4c47 | 211 | static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm, |
ce6120cc | 212 | enum snd_soc_bias_level level) |
452c5eaa | 213 | { |
ed5a4c47 | 214 | struct snd_soc_card *card = dapm->card; |
452c5eaa MB |
215 | int ret = 0; |
216 | ||
84e90930 MB |
217 | trace_snd_soc_bias_level_start(card, level); |
218 | ||
f0fba2ad | 219 | if (card && card->set_bias_level) |
d4c6005f | 220 | ret = card->set_bias_level(card, dapm, level); |
171ec6b0 MB |
221 | if (ret != 0) |
222 | goto out; | |
223 | ||
cc4c670a MB |
224 | if (dapm->codec) { |
225 | if (dapm->codec->driver->set_bias_level) | |
226 | ret = dapm->codec->driver->set_bias_level(dapm->codec, | |
227 | level); | |
228 | else | |
229 | dapm->bias_level = level; | |
230 | } | |
171ec6b0 MB |
231 | if (ret != 0) |
232 | goto out; | |
233 | ||
234 | if (card && card->set_bias_level_post) | |
d4c6005f | 235 | ret = card->set_bias_level_post(card, dapm, level); |
171ec6b0 | 236 | out: |
84e90930 MB |
237 | trace_snd_soc_bias_level_done(card, level); |
238 | ||
452c5eaa MB |
239 | return ret; |
240 | } | |
241 | ||
2b97eabc RP |
242 | /* set up initial codec paths */ |
243 | static void dapm_set_path_status(struct snd_soc_dapm_widget *w, | |
244 | struct snd_soc_dapm_path *p, int i) | |
245 | { | |
246 | switch (w->id) { | |
247 | case snd_soc_dapm_switch: | |
ca9c1aae IM |
248 | case snd_soc_dapm_mixer: |
249 | case snd_soc_dapm_mixer_named_ctl: { | |
2b97eabc | 250 | int val; |
4eaa9819 | 251 | struct soc_mixer_control *mc = (struct soc_mixer_control *) |
82cfecdc | 252 | w->kcontrol_news[i].private_value; |
815ecf8d JS |
253 | unsigned int reg = mc->reg; |
254 | unsigned int shift = mc->shift; | |
4eaa9819 | 255 | int max = mc->max; |
815ecf8d JS |
256 | unsigned int mask = (1 << fls(max)) - 1; |
257 | unsigned int invert = mc->invert; | |
2b97eabc | 258 | |
0445bdf4 | 259 | val = soc_widget_read(w, reg); |
2b97eabc RP |
260 | val = (val >> shift) & mask; |
261 | ||
262 | if ((invert && !val) || (!invert && val)) | |
263 | p->connect = 1; | |
264 | else | |
265 | p->connect = 0; | |
266 | } | |
267 | break; | |
268 | case snd_soc_dapm_mux: { | |
82cfecdc SW |
269 | struct soc_enum *e = (struct soc_enum *) |
270 | w->kcontrol_news[i].private_value; | |
2b97eabc RP |
271 | int val, item, bitmask; |
272 | ||
f8ba0b7b | 273 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
88d96086 | 274 | ; |
0445bdf4 | 275 | val = soc_widget_read(w, e->reg); |
2b97eabc RP |
276 | item = (val >> e->shift_l) & (bitmask - 1); |
277 | ||
278 | p->connect = 0; | |
f8ba0b7b | 279 | for (i = 0; i < e->max; i++) { |
2b97eabc RP |
280 | if (!(strcmp(p->name, e->texts[i])) && item == i) |
281 | p->connect = 1; | |
282 | } | |
283 | } | |
284 | break; | |
24ff33ac | 285 | case snd_soc_dapm_virt_mux: { |
82cfecdc SW |
286 | struct soc_enum *e = (struct soc_enum *) |
287 | w->kcontrol_news[i].private_value; | |
24ff33ac DP |
288 | |
289 | p->connect = 0; | |
290 | /* since a virtual mux has no backing registers to | |
291 | * decide which path to connect, it will try to match | |
292 | * with the first enumeration. This is to ensure | |
293 | * that the default mux choice (the first) will be | |
294 | * correctly powered up during initialization. | |
295 | */ | |
296 | if (!strcmp(p->name, e->texts[0])) | |
297 | p->connect = 1; | |
298 | } | |
299 | break; | |
2e72f8e3 | 300 | case snd_soc_dapm_value_mux: { |
74155556 | 301 | struct soc_enum *e = (struct soc_enum *) |
82cfecdc | 302 | w->kcontrol_news[i].private_value; |
2e72f8e3 PU |
303 | int val, item; |
304 | ||
0445bdf4 | 305 | val = soc_widget_read(w, e->reg); |
2e72f8e3 PU |
306 | val = (val >> e->shift_l) & e->mask; |
307 | for (item = 0; item < e->max; item++) { | |
308 | if (val == e->values[item]) | |
309 | break; | |
310 | } | |
311 | ||
312 | p->connect = 0; | |
313 | for (i = 0; i < e->max; i++) { | |
314 | if (!(strcmp(p->name, e->texts[i])) && item == i) | |
315 | p->connect = 1; | |
316 | } | |
317 | } | |
318 | break; | |
2b97eabc RP |
319 | /* does not effect routing - always connected */ |
320 | case snd_soc_dapm_pga: | |
d88429a6 | 321 | case snd_soc_dapm_out_drv: |
2b97eabc RP |
322 | case snd_soc_dapm_output: |
323 | case snd_soc_dapm_adc: | |
324 | case snd_soc_dapm_input: | |
325 | case snd_soc_dapm_dac: | |
326 | case snd_soc_dapm_micbias: | |
327 | case snd_soc_dapm_vmid: | |
246d0a17 | 328 | case snd_soc_dapm_supply: |
010ff262 MB |
329 | case snd_soc_dapm_aif_in: |
330 | case snd_soc_dapm_aif_out: | |
2b97eabc RP |
331 | p->connect = 1; |
332 | break; | |
333 | /* does effect routing - dynamically connected */ | |
334 | case snd_soc_dapm_hp: | |
335 | case snd_soc_dapm_mic: | |
336 | case snd_soc_dapm_spk: | |
337 | case snd_soc_dapm_line: | |
338 | case snd_soc_dapm_pre: | |
339 | case snd_soc_dapm_post: | |
340 | p->connect = 0; | |
341 | break; | |
342 | } | |
343 | } | |
344 | ||
74b8f955 | 345 | /* connect mux widget to its interconnecting audio paths */ |
ce6120cc | 346 | static int dapm_connect_mux(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
347 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, |
348 | struct snd_soc_dapm_path *path, const char *control_name, | |
349 | const struct snd_kcontrol_new *kcontrol) | |
350 | { | |
351 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
352 | int i; | |
353 | ||
f8ba0b7b | 354 | for (i = 0; i < e->max; i++) { |
2b97eabc | 355 | if (!(strcmp(control_name, e->texts[i]))) { |
8ddab3f5 | 356 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
357 | list_add(&path->list_sink, &dest->sources); |
358 | list_add(&path->list_source, &src->sinks); | |
359 | path->name = (char*)e->texts[i]; | |
360 | dapm_set_path_status(dest, path, 0); | |
361 | return 0; | |
362 | } | |
363 | } | |
364 | ||
365 | return -ENODEV; | |
366 | } | |
367 | ||
74b8f955 | 368 | /* connect mixer widget to its interconnecting audio paths */ |
ce6120cc | 369 | static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
370 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, |
371 | struct snd_soc_dapm_path *path, const char *control_name) | |
372 | { | |
373 | int i; | |
374 | ||
375 | /* search for mixer kcontrol */ | |
376 | for (i = 0; i < dest->num_kcontrols; i++) { | |
82cfecdc | 377 | if (!strcmp(control_name, dest->kcontrol_news[i].name)) { |
8ddab3f5 | 378 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
379 | list_add(&path->list_sink, &dest->sources); |
380 | list_add(&path->list_source, &src->sinks); | |
82cfecdc | 381 | path->name = dest->kcontrol_news[i].name; |
2b97eabc RP |
382 | dapm_set_path_status(dest, path, i); |
383 | return 0; | |
384 | } | |
385 | } | |
386 | return -ENODEV; | |
387 | } | |
388 | ||
af46800b | 389 | static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context *dapm, |
1007da06 | 390 | struct snd_soc_dapm_widget *kcontrolw, |
af46800b SW |
391 | const struct snd_kcontrol_new *kcontrol_new, |
392 | struct snd_kcontrol **kcontrol) | |
393 | { | |
394 | struct snd_soc_dapm_widget *w; | |
395 | int i; | |
396 | ||
397 | *kcontrol = NULL; | |
398 | ||
399 | list_for_each_entry(w, &dapm->card->widgets, list) { | |
1007da06 SW |
400 | if (w == kcontrolw || w->dapm != kcontrolw->dapm) |
401 | continue; | |
af46800b SW |
402 | for (i = 0; i < w->num_kcontrols; i++) { |
403 | if (&w->kcontrol_news[i] == kcontrol_new) { | |
404 | if (w->kcontrols) | |
405 | *kcontrol = w->kcontrols[i]; | |
406 | return 1; | |
407 | } | |
408 | } | |
409 | } | |
410 | ||
411 | return 0; | |
412 | } | |
413 | ||
2b97eabc | 414 | /* create new dapm mixer control */ |
4b80b8c2 | 415 | static int dapm_new_mixer(struct snd_soc_dapm_widget *w) |
2b97eabc | 416 | { |
4b80b8c2 | 417 | struct snd_soc_dapm_context *dapm = w->dapm; |
2b97eabc | 418 | int i, ret = 0; |
3e5ff4df | 419 | size_t name_len, prefix_len; |
2b97eabc | 420 | struct snd_soc_dapm_path *path; |
12ea2c78 | 421 | struct snd_card *card = dapm->card->snd_card; |
efb7ac3f | 422 | const char *prefix; |
fafd2176 SW |
423 | struct snd_soc_dapm_widget_list *wlist; |
424 | size_t wlistsize; | |
efb7ac3f MB |
425 | |
426 | if (dapm->codec) | |
427 | prefix = dapm->codec->name_prefix; | |
428 | else | |
429 | prefix = NULL; | |
2b97eabc | 430 | |
3e5ff4df MB |
431 | if (prefix) |
432 | prefix_len = strlen(prefix) + 1; | |
433 | else | |
434 | prefix_len = 0; | |
435 | ||
2b97eabc RP |
436 | /* add kcontrol */ |
437 | for (i = 0; i < w->num_kcontrols; i++) { | |
438 | ||
439 | /* match name */ | |
440 | list_for_each_entry(path, &w->sources, list_sink) { | |
441 | ||
442 | /* mixer/mux paths name must match control name */ | |
82cfecdc | 443 | if (path->name != (char *)w->kcontrol_news[i].name) |
2b97eabc RP |
444 | continue; |
445 | ||
82cd8764 LPC |
446 | if (w->kcontrols[i]) { |
447 | path->kcontrol = w->kcontrols[i]; | |
448 | continue; | |
449 | } | |
450 | ||
fafd2176 SW |
451 | wlistsize = sizeof(struct snd_soc_dapm_widget_list) + |
452 | sizeof(struct snd_soc_dapm_widget *), | |
453 | wlist = kzalloc(wlistsize, GFP_KERNEL); | |
454 | if (wlist == NULL) { | |
455 | dev_err(dapm->dev, | |
456 | "asoc: can't allocate widget list for %s\n", | |
457 | w->name); | |
458 | return -ENOMEM; | |
459 | } | |
460 | wlist->num_widgets = 1; | |
461 | wlist->widgets[0] = w; | |
462 | ||
ca9c1aae IM |
463 | /* add dapm control with long name. |
464 | * for dapm_mixer this is the concatenation of the | |
465 | * mixer and kcontrol name. | |
466 | * for dapm_mixer_named_ctl this is simply the | |
467 | * kcontrol name. | |
468 | */ | |
82cfecdc | 469 | name_len = strlen(w->kcontrol_news[i].name) + 1; |
07495f3e | 470 | if (w->id != snd_soc_dapm_mixer_named_ctl) |
ca9c1aae IM |
471 | name_len += 1 + strlen(w->name); |
472 | ||
219b93f5 | 473 | path->long_name = kmalloc(name_len, GFP_KERNEL); |
ca9c1aae | 474 | |
fafd2176 SW |
475 | if (path->long_name == NULL) { |
476 | kfree(wlist); | |
2b97eabc | 477 | return -ENOMEM; |
fafd2176 | 478 | } |
2b97eabc | 479 | |
ca9c1aae | 480 | switch (w->id) { |
ca9c1aae | 481 | default: |
3e5ff4df MB |
482 | /* The control will get a prefix from |
483 | * the control creation process but | |
484 | * we're also using the same prefix | |
485 | * for widgets so cut the prefix off | |
486 | * the front of the widget name. | |
487 | */ | |
ca9c1aae | 488 | snprintf(path->long_name, name_len, "%s %s", |
3e5ff4df | 489 | w->name + prefix_len, |
82cfecdc | 490 | w->kcontrol_news[i].name); |
07495f3e | 491 | break; |
ca9c1aae IM |
492 | case snd_soc_dapm_mixer_named_ctl: |
493 | snprintf(path->long_name, name_len, "%s", | |
82cfecdc | 494 | w->kcontrol_news[i].name); |
07495f3e | 495 | break; |
ca9c1aae IM |
496 | } |
497 | ||
219b93f5 MB |
498 | path->long_name[name_len - 1] = '\0'; |
499 | ||
fafd2176 SW |
500 | path->kcontrol = snd_soc_cnew(&w->kcontrol_news[i], |
501 | wlist, path->long_name, | |
502 | prefix); | |
ce6120cc | 503 | ret = snd_ctl_add(card, path->kcontrol); |
2b97eabc | 504 | if (ret < 0) { |
f7d41ae8 JN |
505 | dev_err(dapm->dev, |
506 | "asoc: failed to add dapm kcontrol %s: %d\n", | |
507 | path->long_name, ret); | |
fafd2176 | 508 | kfree(wlist); |
2b97eabc RP |
509 | kfree(path->long_name); |
510 | path->long_name = NULL; | |
511 | return ret; | |
512 | } | |
fad59888 | 513 | w->kcontrols[i] = path->kcontrol; |
2b97eabc RP |
514 | } |
515 | } | |
516 | return ret; | |
517 | } | |
518 | ||
519 | /* create new dapm mux control */ | |
4b80b8c2 | 520 | static int dapm_new_mux(struct snd_soc_dapm_widget *w) |
2b97eabc | 521 | { |
4b80b8c2 | 522 | struct snd_soc_dapm_context *dapm = w->dapm; |
2b97eabc RP |
523 | struct snd_soc_dapm_path *path = NULL; |
524 | struct snd_kcontrol *kcontrol; | |
12ea2c78 | 525 | struct snd_card *card = dapm->card->snd_card; |
efb7ac3f | 526 | const char *prefix; |
3e5ff4df | 527 | size_t prefix_len; |
af46800b | 528 | int ret; |
fafd2176 | 529 | struct snd_soc_dapm_widget_list *wlist; |
af46800b | 530 | int shared, wlistentries; |
fafd2176 | 531 | size_t wlistsize; |
af46800b | 532 | char *name; |
2b97eabc | 533 | |
af46800b SW |
534 | if (w->num_kcontrols != 1) { |
535 | dev_err(dapm->dev, | |
536 | "asoc: mux %s has incorrect number of controls\n", | |
537 | w->name); | |
2b97eabc RP |
538 | return -EINVAL; |
539 | } | |
540 | ||
1007da06 | 541 | shared = dapm_is_shared_kcontrol(dapm, w, &w->kcontrol_news[0], |
af46800b SW |
542 | &kcontrol); |
543 | if (kcontrol) { | |
544 | wlist = kcontrol->private_data; | |
545 | wlistentries = wlist->num_widgets + 1; | |
546 | } else { | |
547 | wlist = NULL; | |
548 | wlistentries = 1; | |
549 | } | |
fafd2176 | 550 | wlistsize = sizeof(struct snd_soc_dapm_widget_list) + |
af46800b SW |
551 | wlistentries * sizeof(struct snd_soc_dapm_widget *), |
552 | wlist = krealloc(wlist, wlistsize, GFP_KERNEL); | |
fafd2176 SW |
553 | if (wlist == NULL) { |
554 | dev_err(dapm->dev, | |
555 | "asoc: can't allocate widget list for %s\n", w->name); | |
556 | return -ENOMEM; | |
557 | } | |
af46800b SW |
558 | wlist->num_widgets = wlistentries; |
559 | wlist->widgets[wlistentries - 1] = w; | |
efb7ac3f | 560 | |
af46800b SW |
561 | if (!kcontrol) { |
562 | if (dapm->codec) | |
563 | prefix = dapm->codec->name_prefix; | |
564 | else | |
565 | prefix = NULL; | |
566 | ||
567 | if (shared) { | |
568 | name = w->kcontrol_news[0].name; | |
569 | prefix_len = 0; | |
570 | } else { | |
571 | name = w->name; | |
572 | if (prefix) | |
573 | prefix_len = strlen(prefix) + 1; | |
574 | else | |
575 | prefix_len = 0; | |
576 | } | |
3e5ff4df | 577 | |
af46800b SW |
578 | /* |
579 | * The control will get a prefix from the control creation | |
580 | * process but we're also using the same prefix for widgets so | |
581 | * cut the prefix off the front of the widget name. | |
582 | */ | |
583 | kcontrol = snd_soc_cnew(&w->kcontrol_news[0], wlist, | |
584 | name + prefix_len, prefix); | |
585 | ret = snd_ctl_add(card, kcontrol); | |
586 | if (ret < 0) { | |
53daf208 MB |
587 | dev_err(dapm->dev, "failed to add kcontrol %s: %d\n", |
588 | w->name, ret); | |
af46800b SW |
589 | kfree(wlist); |
590 | return ret; | |
591 | } | |
592 | } | |
ce6120cc | 593 | |
af46800b | 594 | kcontrol->private_data = wlist; |
2b97eabc | 595 | |
fad59888 SW |
596 | w->kcontrols[0] = kcontrol; |
597 | ||
2b97eabc RP |
598 | list_for_each_entry(path, &w->sources, list_sink) |
599 | path->kcontrol = kcontrol; | |
600 | ||
af46800b | 601 | return 0; |
2b97eabc RP |
602 | } |
603 | ||
604 | /* create new dapm volume control */ | |
4b80b8c2 | 605 | static int dapm_new_pga(struct snd_soc_dapm_widget *w) |
2b97eabc | 606 | { |
a6c65736 | 607 | if (w->num_kcontrols) |
f7d41ae8 JN |
608 | dev_err(w->dapm->dev, |
609 | "asoc: PGA controls not supported: '%s'\n", w->name); | |
2b97eabc | 610 | |
a6c65736 | 611 | return 0; |
2b97eabc RP |
612 | } |
613 | ||
614 | /* reset 'walked' bit for each dapm path */ | |
ce6120cc | 615 | static inline void dapm_clear_walk(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
616 | { |
617 | struct snd_soc_dapm_path *p; | |
618 | ||
8ddab3f5 | 619 | list_for_each_entry(p, &dapm->card->paths, list) |
2b97eabc RP |
620 | p->walked = 0; |
621 | } | |
622 | ||
9949788b MB |
623 | /* We implement power down on suspend by checking the power state of |
624 | * the ALSA card - when we are suspending the ALSA state for the card | |
625 | * is set to D3. | |
626 | */ | |
627 | static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget) | |
628 | { | |
12ea2c78 | 629 | int level = snd_power_get_state(widget->dapm->card->snd_card); |
9949788b | 630 | |
f0fba2ad | 631 | switch (level) { |
9949788b MB |
632 | case SNDRV_CTL_POWER_D3hot: |
633 | case SNDRV_CTL_POWER_D3cold: | |
1547aba9 | 634 | if (widget->ignore_suspend) |
f7d41ae8 JN |
635 | dev_dbg(widget->dapm->dev, "%s ignoring suspend\n", |
636 | widget->name); | |
1547aba9 | 637 | return widget->ignore_suspend; |
9949788b MB |
638 | default: |
639 | return 1; | |
640 | } | |
641 | } | |
642 | ||
2b97eabc RP |
643 | /* |
644 | * Recursively check for a completed path to an active or physically connected | |
645 | * output widget. Returns number of complete paths. | |
646 | */ | |
647 | static int is_connected_output_ep(struct snd_soc_dapm_widget *widget) | |
648 | { | |
649 | struct snd_soc_dapm_path *path; | |
650 | int con = 0; | |
651 | ||
246d0a17 MB |
652 | if (widget->id == snd_soc_dapm_supply) |
653 | return 0; | |
654 | ||
010ff262 MB |
655 | switch (widget->id) { |
656 | case snd_soc_dapm_adc: | |
657 | case snd_soc_dapm_aif_out: | |
658 | if (widget->active) | |
9949788b | 659 | return snd_soc_dapm_suspend_check(widget); |
010ff262 MB |
660 | default: |
661 | break; | |
662 | } | |
2b97eabc RP |
663 | |
664 | if (widget->connected) { | |
665 | /* connected pin ? */ | |
666 | if (widget->id == snd_soc_dapm_output && !widget->ext) | |
9949788b | 667 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
668 | |
669 | /* connected jack or spk ? */ | |
670 | if (widget->id == snd_soc_dapm_hp || widget->id == snd_soc_dapm_spk || | |
eaeae5d9 | 671 | (widget->id == snd_soc_dapm_line && !list_empty(&widget->sources))) |
9949788b | 672 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
673 | } |
674 | ||
675 | list_for_each_entry(path, &widget->sinks, list_source) { | |
bf3a9e13 MB |
676 | if (path->weak) |
677 | continue; | |
678 | ||
2b97eabc RP |
679 | if (path->walked) |
680 | continue; | |
681 | ||
682 | if (path->sink && path->connect) { | |
683 | path->walked = 1; | |
684 | con += is_connected_output_ep(path->sink); | |
685 | } | |
686 | } | |
687 | ||
688 | return con; | |
689 | } | |
690 | ||
691 | /* | |
692 | * Recursively check for a completed path to an active or physically connected | |
693 | * input widget. Returns number of complete paths. | |
694 | */ | |
695 | static int is_connected_input_ep(struct snd_soc_dapm_widget *widget) | |
696 | { | |
697 | struct snd_soc_dapm_path *path; | |
698 | int con = 0; | |
699 | ||
246d0a17 MB |
700 | if (widget->id == snd_soc_dapm_supply) |
701 | return 0; | |
702 | ||
2b97eabc | 703 | /* active stream ? */ |
010ff262 MB |
704 | switch (widget->id) { |
705 | case snd_soc_dapm_dac: | |
706 | case snd_soc_dapm_aif_in: | |
707 | if (widget->active) | |
9949788b | 708 | return snd_soc_dapm_suspend_check(widget); |
010ff262 MB |
709 | default: |
710 | break; | |
711 | } | |
2b97eabc RP |
712 | |
713 | if (widget->connected) { | |
714 | /* connected pin ? */ | |
715 | if (widget->id == snd_soc_dapm_input && !widget->ext) | |
9949788b | 716 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
717 | |
718 | /* connected VMID/Bias for lower pops */ | |
719 | if (widget->id == snd_soc_dapm_vmid) | |
9949788b | 720 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
721 | |
722 | /* connected jack ? */ | |
eaeae5d9 PU |
723 | if (widget->id == snd_soc_dapm_mic || |
724 | (widget->id == snd_soc_dapm_line && !list_empty(&widget->sinks))) | |
9949788b | 725 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
726 | } |
727 | ||
728 | list_for_each_entry(path, &widget->sources, list_sink) { | |
bf3a9e13 MB |
729 | if (path->weak) |
730 | continue; | |
731 | ||
2b97eabc RP |
732 | if (path->walked) |
733 | continue; | |
734 | ||
735 | if (path->source && path->connect) { | |
736 | path->walked = 1; | |
737 | con += is_connected_input_ep(path->source); | |
738 | } | |
739 | } | |
740 | ||
741 | return con; | |
742 | } | |
743 | ||
e2be2ccf JN |
744 | /* |
745 | * Handler for generic register modifier widget. | |
746 | */ | |
747 | int dapm_reg_event(struct snd_soc_dapm_widget *w, | |
748 | struct snd_kcontrol *kcontrol, int event) | |
749 | { | |
750 | unsigned int val; | |
751 | ||
752 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
753 | val = w->on_val; | |
754 | else | |
755 | val = w->off_val; | |
756 | ||
0445bdf4 | 757 | soc_widget_update_bits(w, -(w->reg + 1), |
e2be2ccf JN |
758 | w->mask << w->shift, val << w->shift); |
759 | ||
760 | return 0; | |
761 | } | |
11589418 | 762 | EXPORT_SYMBOL_GPL(dapm_reg_event); |
e2be2ccf | 763 | |
cd0f2d47 MB |
764 | /* Generic check to see if a widget should be powered. |
765 | */ | |
766 | static int dapm_generic_check_power(struct snd_soc_dapm_widget *w) | |
767 | { | |
768 | int in, out; | |
769 | ||
770 | in = is_connected_input_ep(w); | |
ce6120cc | 771 | dapm_clear_walk(w->dapm); |
cd0f2d47 | 772 | out = is_connected_output_ep(w); |
ce6120cc | 773 | dapm_clear_walk(w->dapm); |
cd0f2d47 MB |
774 | return out != 0 && in != 0; |
775 | } | |
776 | ||
6ea31b9f MB |
777 | /* Check to see if an ADC has power */ |
778 | static int dapm_adc_check_power(struct snd_soc_dapm_widget *w) | |
779 | { | |
780 | int in; | |
781 | ||
782 | if (w->active) { | |
783 | in = is_connected_input_ep(w); | |
ce6120cc | 784 | dapm_clear_walk(w->dapm); |
6ea31b9f MB |
785 | return in != 0; |
786 | } else { | |
787 | return dapm_generic_check_power(w); | |
788 | } | |
789 | } | |
790 | ||
791 | /* Check to see if a DAC has power */ | |
792 | static int dapm_dac_check_power(struct snd_soc_dapm_widget *w) | |
793 | { | |
794 | int out; | |
795 | ||
796 | if (w->active) { | |
797 | out = is_connected_output_ep(w); | |
ce6120cc | 798 | dapm_clear_walk(w->dapm); |
6ea31b9f MB |
799 | return out != 0; |
800 | } else { | |
801 | return dapm_generic_check_power(w); | |
802 | } | |
803 | } | |
804 | ||
246d0a17 MB |
805 | /* Check to see if a power supply is needed */ |
806 | static int dapm_supply_check_power(struct snd_soc_dapm_widget *w) | |
807 | { | |
808 | struct snd_soc_dapm_path *path; | |
809 | int power = 0; | |
810 | ||
811 | /* Check if one of our outputs is connected */ | |
812 | list_for_each_entry(path, &w->sinks, list_source) { | |
bf3a9e13 MB |
813 | if (path->weak) |
814 | continue; | |
815 | ||
215edda3 MB |
816 | if (path->connected && |
817 | !path->connected(path->source, path->sink)) | |
818 | continue; | |
819 | ||
3017358a MB |
820 | if (!path->sink) |
821 | continue; | |
822 | ||
823 | if (path->sink->force) { | |
824 | power = 1; | |
825 | break; | |
826 | } | |
827 | ||
828 | if (path->sink->power_check && | |
246d0a17 MB |
829 | path->sink->power_check(path->sink)) { |
830 | power = 1; | |
831 | break; | |
832 | } | |
833 | } | |
834 | ||
ce6120cc | 835 | dapm_clear_walk(w->dapm); |
246d0a17 MB |
836 | |
837 | return power; | |
838 | } | |
839 | ||
38357ab2 MB |
840 | static int dapm_seq_compare(struct snd_soc_dapm_widget *a, |
841 | struct snd_soc_dapm_widget *b, | |
828a842f | 842 | bool power_up) |
42aa3418 | 843 | { |
828a842f MB |
844 | int *sort; |
845 | ||
846 | if (power_up) | |
847 | sort = dapm_up_seq; | |
848 | else | |
849 | sort = dapm_down_seq; | |
850 | ||
38357ab2 MB |
851 | if (sort[a->id] != sort[b->id]) |
852 | return sort[a->id] - sort[b->id]; | |
20e4859d MB |
853 | if (a->subseq != b->subseq) { |
854 | if (power_up) | |
855 | return a->subseq - b->subseq; | |
856 | else | |
857 | return b->subseq - a->subseq; | |
858 | } | |
b22ead2a MB |
859 | if (a->reg != b->reg) |
860 | return a->reg - b->reg; | |
84dab567 MB |
861 | if (a->dapm != b->dapm) |
862 | return (unsigned long)a->dapm - (unsigned long)b->dapm; | |
42aa3418 | 863 | |
38357ab2 MB |
864 | return 0; |
865 | } | |
42aa3418 | 866 | |
38357ab2 MB |
867 | /* Insert a widget in order into a DAPM power sequence. */ |
868 | static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget, | |
869 | struct list_head *list, | |
828a842f | 870 | bool power_up) |
38357ab2 MB |
871 | { |
872 | struct snd_soc_dapm_widget *w; | |
873 | ||
874 | list_for_each_entry(w, list, power_list) | |
828a842f | 875 | if (dapm_seq_compare(new_widget, w, power_up) < 0) { |
38357ab2 MB |
876 | list_add_tail(&new_widget->power_list, &w->power_list); |
877 | return; | |
878 | } | |
879 | ||
880 | list_add_tail(&new_widget->power_list, list); | |
881 | } | |
882 | ||
68f89ad8 MB |
883 | static void dapm_seq_check_event(struct snd_soc_dapm_context *dapm, |
884 | struct snd_soc_dapm_widget *w, int event) | |
885 | { | |
886 | struct snd_soc_card *card = dapm->card; | |
887 | const char *ev_name; | |
888 | int power, ret; | |
889 | ||
890 | switch (event) { | |
891 | case SND_SOC_DAPM_PRE_PMU: | |
892 | ev_name = "PRE_PMU"; | |
893 | power = 1; | |
894 | break; | |
895 | case SND_SOC_DAPM_POST_PMU: | |
896 | ev_name = "POST_PMU"; | |
897 | power = 1; | |
898 | break; | |
899 | case SND_SOC_DAPM_PRE_PMD: | |
900 | ev_name = "PRE_PMD"; | |
901 | power = 0; | |
902 | break; | |
903 | case SND_SOC_DAPM_POST_PMD: | |
904 | ev_name = "POST_PMD"; | |
905 | power = 0; | |
906 | break; | |
907 | default: | |
908 | BUG(); | |
909 | return; | |
910 | } | |
911 | ||
912 | if (w->power != power) | |
913 | return; | |
914 | ||
915 | if (w->event && (w->event_flags & event)) { | |
916 | pop_dbg(dapm->dev, card->pop_time, "pop test : %s %s\n", | |
917 | w->name, ev_name); | |
84e90930 | 918 | trace_snd_soc_dapm_widget_event_start(w, event); |
68f89ad8 | 919 | ret = w->event(w, NULL, event); |
84e90930 | 920 | trace_snd_soc_dapm_widget_event_done(w, event); |
68f89ad8 MB |
921 | if (ret < 0) |
922 | pr_err("%s: %s event failed: %d\n", | |
923 | ev_name, w->name, ret); | |
924 | } | |
925 | } | |
926 | ||
b22ead2a | 927 | /* Apply the coalesced changes from a DAPM sequence */ |
ce6120cc | 928 | static void dapm_seq_run_coalesced(struct snd_soc_dapm_context *dapm, |
b22ead2a | 929 | struct list_head *pending) |
163cac06 | 930 | { |
3a45b867 | 931 | struct snd_soc_card *card = dapm->card; |
68f89ad8 MB |
932 | struct snd_soc_dapm_widget *w; |
933 | int reg, power; | |
b22ead2a MB |
934 | unsigned int value = 0; |
935 | unsigned int mask = 0; | |
936 | unsigned int cur_mask; | |
937 | ||
938 | reg = list_first_entry(pending, struct snd_soc_dapm_widget, | |
939 | power_list)->reg; | |
940 | ||
941 | list_for_each_entry(w, pending, power_list) { | |
942 | cur_mask = 1 << w->shift; | |
943 | BUG_ON(reg != w->reg); | |
944 | ||
945 | if (w->invert) | |
946 | power = !w->power; | |
947 | else | |
948 | power = w->power; | |
949 | ||
950 | mask |= cur_mask; | |
951 | if (power) | |
952 | value |= cur_mask; | |
953 | ||
fd8d3bc0 | 954 | pop_dbg(dapm->dev, card->pop_time, |
b22ead2a MB |
955 | "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n", |
956 | w->name, reg, value, mask); | |
81628103 | 957 | |
68f89ad8 MB |
958 | /* Check for events */ |
959 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMU); | |
960 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMD); | |
81628103 MB |
961 | } |
962 | ||
963 | if (reg >= 0) { | |
29376bc7 MB |
964 | /* Any widget will do, they should all be updating the |
965 | * same register. | |
966 | */ | |
967 | w = list_first_entry(pending, struct snd_soc_dapm_widget, | |
968 | power_list); | |
969 | ||
fd8d3bc0 | 970 | pop_dbg(dapm->dev, card->pop_time, |
81628103 | 971 | "pop test : Applying 0x%x/0x%x to %x in %dms\n", |
3a45b867 JN |
972 | value, mask, reg, card->pop_time); |
973 | pop_wait(card->pop_time); | |
0445bdf4 | 974 | soc_widget_update_bits(w, reg, mask, value); |
b22ead2a MB |
975 | } |
976 | ||
81628103 | 977 | list_for_each_entry(w, pending, power_list) { |
68f89ad8 MB |
978 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMU); |
979 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMD); | |
81628103 | 980 | } |
b22ead2a | 981 | } |
42aa3418 | 982 | |
b22ead2a MB |
983 | /* Apply a DAPM power sequence. |
984 | * | |
985 | * We walk over a pre-sorted list of widgets to apply power to. In | |
986 | * order to minimise the number of writes to the device required | |
987 | * multiple widgets will be updated in a single write where possible. | |
988 | * Currently anything that requires more than a single write is not | |
989 | * handled. | |
990 | */ | |
ce6120cc | 991 | static void dapm_seq_run(struct snd_soc_dapm_context *dapm, |
828a842f | 992 | struct list_head *list, int event, bool power_up) |
b22ead2a MB |
993 | { |
994 | struct snd_soc_dapm_widget *w, *n; | |
995 | LIST_HEAD(pending); | |
996 | int cur_sort = -1; | |
20e4859d | 997 | int cur_subseq = -1; |
b22ead2a | 998 | int cur_reg = SND_SOC_NOPM; |
7be31be8 | 999 | struct snd_soc_dapm_context *cur_dapm = NULL; |
474b62d6 | 1000 | int ret, i; |
828a842f MB |
1001 | int *sort; |
1002 | ||
1003 | if (power_up) | |
1004 | sort = dapm_up_seq; | |
1005 | else | |
1006 | sort = dapm_down_seq; | |
163cac06 | 1007 | |
b22ead2a MB |
1008 | list_for_each_entry_safe(w, n, list, power_list) { |
1009 | ret = 0; | |
1010 | ||
1011 | /* Do we need to apply any queued changes? */ | |
7be31be8 | 1012 | if (sort[w->id] != cur_sort || w->reg != cur_reg || |
20e4859d | 1013 | w->dapm != cur_dapm || w->subseq != cur_subseq) { |
b22ead2a | 1014 | if (!list_empty(&pending)) |
7be31be8 | 1015 | dapm_seq_run_coalesced(cur_dapm, &pending); |
b22ead2a | 1016 | |
474b62d6 MB |
1017 | if (cur_dapm && cur_dapm->seq_notifier) { |
1018 | for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++) | |
1019 | if (sort[i] == cur_sort) | |
1020 | cur_dapm->seq_notifier(cur_dapm, | |
f85a9e0d MB |
1021 | i, |
1022 | cur_subseq); | |
474b62d6 MB |
1023 | } |
1024 | ||
b22ead2a MB |
1025 | INIT_LIST_HEAD(&pending); |
1026 | cur_sort = -1; | |
b0b3e6f8 | 1027 | cur_subseq = INT_MIN; |
b22ead2a | 1028 | cur_reg = SND_SOC_NOPM; |
7be31be8 | 1029 | cur_dapm = NULL; |
b22ead2a MB |
1030 | } |
1031 | ||
163cac06 MB |
1032 | switch (w->id) { |
1033 | case snd_soc_dapm_pre: | |
1034 | if (!w->event) | |
b22ead2a MB |
1035 | list_for_each_entry_safe_continue(w, n, list, |
1036 | power_list); | |
163cac06 | 1037 | |
b22ead2a | 1038 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
1039 | ret = w->event(w, |
1040 | NULL, SND_SOC_DAPM_PRE_PMU); | |
b22ead2a | 1041 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
1042 | ret = w->event(w, |
1043 | NULL, SND_SOC_DAPM_PRE_PMD); | |
163cac06 MB |
1044 | break; |
1045 | ||
1046 | case snd_soc_dapm_post: | |
1047 | if (!w->event) | |
b22ead2a MB |
1048 | list_for_each_entry_safe_continue(w, n, list, |
1049 | power_list); | |
163cac06 | 1050 | |
b22ead2a | 1051 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
1052 | ret = w->event(w, |
1053 | NULL, SND_SOC_DAPM_POST_PMU); | |
b22ead2a | 1054 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
1055 | ret = w->event(w, |
1056 | NULL, SND_SOC_DAPM_POST_PMD); | |
163cac06 MB |
1057 | break; |
1058 | ||
b22ead2a | 1059 | default: |
81628103 MB |
1060 | /* Queue it up for application */ |
1061 | cur_sort = sort[w->id]; | |
20e4859d | 1062 | cur_subseq = w->subseq; |
81628103 | 1063 | cur_reg = w->reg; |
7be31be8 | 1064 | cur_dapm = w->dapm; |
81628103 MB |
1065 | list_move(&w->power_list, &pending); |
1066 | break; | |
163cac06 | 1067 | } |
b22ead2a MB |
1068 | |
1069 | if (ret < 0) | |
f7d41ae8 JN |
1070 | dev_err(w->dapm->dev, |
1071 | "Failed to apply widget power: %d\n", ret); | |
6ea31b9f | 1072 | } |
b22ead2a MB |
1073 | |
1074 | if (!list_empty(&pending)) | |
28e86808 | 1075 | dapm_seq_run_coalesced(cur_dapm, &pending); |
474b62d6 MB |
1076 | |
1077 | if (cur_dapm && cur_dapm->seq_notifier) { | |
1078 | for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++) | |
1079 | if (sort[i] == cur_sort) | |
1080 | cur_dapm->seq_notifier(cur_dapm, | |
f85a9e0d | 1081 | i, cur_subseq); |
474b62d6 | 1082 | } |
42aa3418 MB |
1083 | } |
1084 | ||
97404f2e MB |
1085 | static void dapm_widget_update(struct snd_soc_dapm_context *dapm) |
1086 | { | |
1087 | struct snd_soc_dapm_update *update = dapm->update; | |
1088 | struct snd_soc_dapm_widget *w; | |
1089 | int ret; | |
1090 | ||
1091 | if (!update) | |
1092 | return; | |
1093 | ||
1094 | w = update->widget; | |
1095 | ||
1096 | if (w->event && | |
1097 | (w->event_flags & SND_SOC_DAPM_PRE_REG)) { | |
1098 | ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG); | |
1099 | if (ret != 0) | |
1100 | pr_err("%s DAPM pre-event failed: %d\n", | |
1101 | w->name, ret); | |
1102 | } | |
1103 | ||
1104 | ret = snd_soc_update_bits(w->codec, update->reg, update->mask, | |
1105 | update->val); | |
1106 | if (ret < 0) | |
1107 | pr_err("%s DAPM update failed: %d\n", w->name, ret); | |
1108 | ||
1109 | if (w->event && | |
1110 | (w->event_flags & SND_SOC_DAPM_POST_REG)) { | |
1111 | ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG); | |
1112 | if (ret != 0) | |
1113 | pr_err("%s DAPM post-event failed: %d\n", | |
1114 | w->name, ret); | |
1115 | } | |
1116 | } | |
1117 | ||
9d0624a7 MB |
1118 | /* Async callback run prior to DAPM sequences - brings to _PREPARE if |
1119 | * they're changing state. | |
1120 | */ | |
1121 | static void dapm_pre_sequence_async(void *data, async_cookie_t cookie) | |
1122 | { | |
1123 | struct snd_soc_dapm_context *d = data; | |
1124 | int ret; | |
1125 | ||
56fba41f MB |
1126 | /* If we're off and we're not supposed to be go into STANDBY */ |
1127 | if (d->bias_level == SND_SOC_BIAS_OFF && | |
1128 | d->target_bias_level != SND_SOC_BIAS_OFF) { | |
9d0624a7 MB |
1129 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY); |
1130 | if (ret != 0) | |
1131 | dev_err(d->dev, | |
1132 | "Failed to turn on bias: %d\n", ret); | |
1133 | } | |
1134 | ||
56fba41f MB |
1135 | /* Prepare for a STADDBY->ON or ON->STANDBY transition */ |
1136 | if (d->bias_level != d->target_bias_level) { | |
9d0624a7 MB |
1137 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE); |
1138 | if (ret != 0) | |
1139 | dev_err(d->dev, | |
1140 | "Failed to prepare bias: %d\n", ret); | |
1141 | } | |
1142 | } | |
1143 | ||
1144 | /* Async callback run prior to DAPM sequences - brings to their final | |
1145 | * state. | |
1146 | */ | |
1147 | static void dapm_post_sequence_async(void *data, async_cookie_t cookie) | |
1148 | { | |
1149 | struct snd_soc_dapm_context *d = data; | |
1150 | int ret; | |
1151 | ||
1152 | /* If we just powered the last thing off drop to standby bias */ | |
56fba41f MB |
1153 | if (d->bias_level == SND_SOC_BIAS_PREPARE && |
1154 | (d->target_bias_level == SND_SOC_BIAS_STANDBY || | |
1155 | d->target_bias_level == SND_SOC_BIAS_OFF)) { | |
9d0624a7 MB |
1156 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY); |
1157 | if (ret != 0) | |
1158 | dev_err(d->dev, "Failed to apply standby bias: %d\n", | |
1159 | ret); | |
1160 | } | |
97404f2e | 1161 | |
9d0624a7 | 1162 | /* If we're in standby and can support bias off then do that */ |
56fba41f MB |
1163 | if (d->bias_level == SND_SOC_BIAS_STANDBY && |
1164 | d->target_bias_level == SND_SOC_BIAS_OFF) { | |
9d0624a7 MB |
1165 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF); |
1166 | if (ret != 0) | |
1167 | dev_err(d->dev, "Failed to turn off bias: %d\n", ret); | |
1168 | } | |
1169 | ||
1170 | /* If we just powered up then move to active bias */ | |
56fba41f MB |
1171 | if (d->bias_level == SND_SOC_BIAS_PREPARE && |
1172 | d->target_bias_level == SND_SOC_BIAS_ON) { | |
9d0624a7 MB |
1173 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON); |
1174 | if (ret != 0) | |
1175 | dev_err(d->dev, "Failed to apply active bias: %d\n", | |
1176 | ret); | |
1177 | } | |
1178 | } | |
97404f2e | 1179 | |
2b97eabc RP |
1180 | /* |
1181 | * Scan each dapm widget for complete audio path. | |
1182 | * A complete path is a route that has valid endpoints i.e.:- | |
1183 | * | |
1184 | * o DAC to output pin. | |
1185 | * o Input Pin to ADC. | |
1186 | * o Input pin to Output pin (bypass, sidetone) | |
1187 | * o DAC to ADC (loopback). | |
1188 | */ | |
ce6120cc | 1189 | static int dapm_power_widgets(struct snd_soc_dapm_context *dapm, int event) |
2b97eabc | 1190 | { |
12ea2c78 | 1191 | struct snd_soc_card *card = dapm->card; |
2b97eabc | 1192 | struct snd_soc_dapm_widget *w; |
7be31be8 | 1193 | struct snd_soc_dapm_context *d; |
291f3bbc MB |
1194 | LIST_HEAD(up_list); |
1195 | LIST_HEAD(down_list); | |
9d0624a7 | 1196 | LIST_HEAD(async_domain); |
56fba41f | 1197 | enum snd_soc_bias_level bias; |
38357ab2 | 1198 | int power; |
6d3ddc81 | 1199 | |
84e90930 MB |
1200 | trace_snd_soc_dapm_start(card); |
1201 | ||
56fba41f MB |
1202 | list_for_each_entry(d, &card->dapm_list, list) { |
1203 | if (d->n_widgets || d->codec == NULL) { | |
1204 | if (d->idle_bias_off) | |
1205 | d->target_bias_level = SND_SOC_BIAS_OFF; | |
1206 | else | |
1207 | d->target_bias_level = SND_SOC_BIAS_STANDBY; | |
1208 | } | |
1209 | } | |
7be31be8 | 1210 | |
6d3ddc81 MB |
1211 | /* Check which widgets we need to power and store them in |
1212 | * lists indicating if they should be powered up or down. | |
1213 | */ | |
97c866de | 1214 | list_for_each_entry(w, &card->widgets, list) { |
6d3ddc81 MB |
1215 | switch (w->id) { |
1216 | case snd_soc_dapm_pre: | |
828a842f | 1217 | dapm_seq_insert(w, &down_list, false); |
6d3ddc81 MB |
1218 | break; |
1219 | case snd_soc_dapm_post: | |
828a842f | 1220 | dapm_seq_insert(w, &up_list, true); |
6d3ddc81 MB |
1221 | break; |
1222 | ||
1223 | default: | |
1224 | if (!w->power_check) | |
1225 | continue; | |
1226 | ||
9949788b | 1227 | if (!w->force) |
50b6bce5 | 1228 | power = w->power_check(w); |
9949788b MB |
1229 | else |
1230 | power = 1; | |
dfcc9047 MB |
1231 | |
1232 | if (power) { | |
1233 | d = w->dapm; | |
1234 | ||
1235 | /* Supplies and micbiases only bring | |
1236 | * the context up to STANDBY as unless | |
1237 | * something else is active and | |
1238 | * passing audio they generally don't | |
1239 | * require full power. | |
1240 | */ | |
1241 | switch (w->id) { | |
1242 | case snd_soc_dapm_supply: | |
1243 | case snd_soc_dapm_micbias: | |
1244 | if (d->target_bias_level < SND_SOC_BIAS_STANDBY) | |
1245 | d->target_bias_level = SND_SOC_BIAS_STANDBY; | |
1246 | break; | |
1247 | default: | |
1248 | d->target_bias_level = SND_SOC_BIAS_ON; | |
1249 | break; | |
1250 | } | |
1251 | } | |
452c5eaa | 1252 | |
6d3ddc81 MB |
1253 | if (w->power == power) |
1254 | continue; | |
1255 | ||
84e90930 MB |
1256 | trace_snd_soc_dapm_widget_power(w, power); |
1257 | ||
6d3ddc81 | 1258 | if (power) |
828a842f | 1259 | dapm_seq_insert(w, &up_list, true); |
6d3ddc81 | 1260 | else |
828a842f | 1261 | dapm_seq_insert(w, &down_list, false); |
6d3ddc81 MB |
1262 | |
1263 | w->power = power; | |
1264 | break; | |
1265 | } | |
2b97eabc RP |
1266 | } |
1267 | ||
b14b76a5 MB |
1268 | /* If there are no DAPM widgets then try to figure out power from the |
1269 | * event type. | |
1270 | */ | |
97c866de | 1271 | if (!dapm->n_widgets) { |
b14b76a5 MB |
1272 | switch (event) { |
1273 | case SND_SOC_DAPM_STREAM_START: | |
1274 | case SND_SOC_DAPM_STREAM_RESUME: | |
56fba41f | 1275 | dapm->target_bias_level = SND_SOC_BIAS_ON; |
b14b76a5 | 1276 | break; |
862af8ad | 1277 | case SND_SOC_DAPM_STREAM_STOP: |
56fba41f MB |
1278 | if (dapm->codec->active) |
1279 | dapm->target_bias_level = SND_SOC_BIAS_ON; | |
1280 | else | |
1281 | dapm->target_bias_level = SND_SOC_BIAS_STANDBY; | |
862af8ad | 1282 | break; |
50b6bce5 | 1283 | case SND_SOC_DAPM_STREAM_SUSPEND: |
56fba41f | 1284 | dapm->target_bias_level = SND_SOC_BIAS_STANDBY; |
50b6bce5 | 1285 | break; |
b14b76a5 | 1286 | case SND_SOC_DAPM_STREAM_NOP: |
56fba41f | 1287 | dapm->target_bias_level = dapm->bias_level; |
50b6bce5 | 1288 | break; |
b14b76a5 MB |
1289 | default: |
1290 | break; | |
1291 | } | |
1292 | } | |
1293 | ||
52ba67bf | 1294 | /* Force all contexts in the card to the same bias state */ |
56fba41f | 1295 | bias = SND_SOC_BIAS_OFF; |
52ba67bf | 1296 | list_for_each_entry(d, &card->dapm_list, list) |
56fba41f MB |
1297 | if (d->target_bias_level > bias) |
1298 | bias = d->target_bias_level; | |
52ba67bf | 1299 | list_for_each_entry(d, &card->dapm_list, list) |
56fba41f | 1300 | d->target_bias_level = bias; |
52ba67bf MB |
1301 | |
1302 | ||
9d0624a7 MB |
1303 | /* Run all the bias changes in parallel */ |
1304 | list_for_each_entry(d, &dapm->card->dapm_list, list) | |
1305 | async_schedule_domain(dapm_pre_sequence_async, d, | |
1306 | &async_domain); | |
1307 | async_synchronize_full_domain(&async_domain); | |
452c5eaa | 1308 | |
6d3ddc81 | 1309 | /* Power down widgets first; try to avoid amplifying pops. */ |
828a842f | 1310 | dapm_seq_run(dapm, &down_list, event, false); |
2b97eabc | 1311 | |
97404f2e MB |
1312 | dapm_widget_update(dapm); |
1313 | ||
6d3ddc81 | 1314 | /* Now power up. */ |
828a842f | 1315 | dapm_seq_run(dapm, &up_list, event, true); |
2b97eabc | 1316 | |
9d0624a7 MB |
1317 | /* Run all the bias changes in parallel */ |
1318 | list_for_each_entry(d, &dapm->card->dapm_list, list) | |
1319 | async_schedule_domain(dapm_post_sequence_async, d, | |
1320 | &async_domain); | |
1321 | async_synchronize_full_domain(&async_domain); | |
452c5eaa | 1322 | |
fd8d3bc0 JN |
1323 | pop_dbg(dapm->dev, card->pop_time, |
1324 | "DAPM sequencing finished, waiting %dms\n", card->pop_time); | |
3a45b867 | 1325 | pop_wait(card->pop_time); |
cb507e7e | 1326 | |
84e90930 MB |
1327 | trace_snd_soc_dapm_done(card); |
1328 | ||
42aa3418 | 1329 | return 0; |
2b97eabc RP |
1330 | } |
1331 | ||
79fb9387 MB |
1332 | #ifdef CONFIG_DEBUG_FS |
1333 | static int dapm_widget_power_open_file(struct inode *inode, struct file *file) | |
1334 | { | |
1335 | file->private_data = inode->i_private; | |
1336 | return 0; | |
1337 | } | |
1338 | ||
1339 | static ssize_t dapm_widget_power_read_file(struct file *file, | |
1340 | char __user *user_buf, | |
1341 | size_t count, loff_t *ppos) | |
1342 | { | |
1343 | struct snd_soc_dapm_widget *w = file->private_data; | |
1344 | char *buf; | |
1345 | int in, out; | |
1346 | ssize_t ret; | |
1347 | struct snd_soc_dapm_path *p = NULL; | |
1348 | ||
1349 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); | |
1350 | if (!buf) | |
1351 | return -ENOMEM; | |
1352 | ||
1353 | in = is_connected_input_ep(w); | |
ce6120cc | 1354 | dapm_clear_walk(w->dapm); |
79fb9387 | 1355 | out = is_connected_output_ep(w); |
ce6120cc | 1356 | dapm_clear_walk(w->dapm); |
79fb9387 | 1357 | |
d033c36a | 1358 | ret = snprintf(buf, PAGE_SIZE, "%s: %s in %d out %d", |
79fb9387 MB |
1359 | w->name, w->power ? "On" : "Off", in, out); |
1360 | ||
d033c36a MB |
1361 | if (w->reg >= 0) |
1362 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
1363 | " - R%d(0x%x) bit %d", | |
1364 | w->reg, w->reg, w->shift); | |
1365 | ||
1366 | ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n"); | |
1367 | ||
3eef08ba MB |
1368 | if (w->sname) |
1369 | ret += snprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n", | |
1370 | w->sname, | |
1371 | w->active ? "active" : "inactive"); | |
79fb9387 MB |
1372 | |
1373 | list_for_each_entry(p, &w->sources, list_sink) { | |
215edda3 MB |
1374 | if (p->connected && !p->connected(w, p->sink)) |
1375 | continue; | |
1376 | ||
79fb9387 MB |
1377 | if (p->connect) |
1378 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
67f5ed6e | 1379 | " in \"%s\" \"%s\"\n", |
79fb9387 MB |
1380 | p->name ? p->name : "static", |
1381 | p->source->name); | |
1382 | } | |
1383 | list_for_each_entry(p, &w->sinks, list_source) { | |
215edda3 MB |
1384 | if (p->connected && !p->connected(w, p->sink)) |
1385 | continue; | |
1386 | ||
79fb9387 MB |
1387 | if (p->connect) |
1388 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
67f5ed6e | 1389 | " out \"%s\" \"%s\"\n", |
79fb9387 MB |
1390 | p->name ? p->name : "static", |
1391 | p->sink->name); | |
1392 | } | |
1393 | ||
1394 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); | |
1395 | ||
1396 | kfree(buf); | |
1397 | return ret; | |
1398 | } | |
1399 | ||
1400 | static const struct file_operations dapm_widget_power_fops = { | |
1401 | .open = dapm_widget_power_open_file, | |
1402 | .read = dapm_widget_power_read_file, | |
6038f373 | 1403 | .llseek = default_llseek, |
79fb9387 MB |
1404 | }; |
1405 | ||
ef49e4fa MB |
1406 | static int dapm_bias_open_file(struct inode *inode, struct file *file) |
1407 | { | |
1408 | file->private_data = inode->i_private; | |
1409 | return 0; | |
1410 | } | |
1411 | ||
1412 | static ssize_t dapm_bias_read_file(struct file *file, char __user *user_buf, | |
1413 | size_t count, loff_t *ppos) | |
1414 | { | |
1415 | struct snd_soc_dapm_context *dapm = file->private_data; | |
1416 | char *level; | |
1417 | ||
1418 | switch (dapm->bias_level) { | |
1419 | case SND_SOC_BIAS_ON: | |
1420 | level = "On\n"; | |
1421 | break; | |
1422 | case SND_SOC_BIAS_PREPARE: | |
1423 | level = "Prepare\n"; | |
1424 | break; | |
1425 | case SND_SOC_BIAS_STANDBY: | |
1426 | level = "Standby\n"; | |
1427 | break; | |
1428 | case SND_SOC_BIAS_OFF: | |
1429 | level = "Off\n"; | |
1430 | break; | |
1431 | default: | |
1432 | BUG(); | |
1433 | level = "Unknown\n"; | |
1434 | break; | |
1435 | } | |
1436 | ||
1437 | return simple_read_from_buffer(user_buf, count, ppos, level, | |
1438 | strlen(level)); | |
1439 | } | |
1440 | ||
1441 | static const struct file_operations dapm_bias_fops = { | |
1442 | .open = dapm_bias_open_file, | |
1443 | .read = dapm_bias_read_file, | |
1444 | .llseek = default_llseek, | |
1445 | }; | |
1446 | ||
8eecaf62 LPC |
1447 | void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm, |
1448 | struct dentry *parent) | |
79fb9387 | 1449 | { |
79fb9387 MB |
1450 | struct dentry *d; |
1451 | ||
8eecaf62 LPC |
1452 | dapm->debugfs_dapm = debugfs_create_dir("dapm", parent); |
1453 | ||
1454 | if (!dapm->debugfs_dapm) { | |
1455 | printk(KERN_WARNING | |
1456 | "Failed to create DAPM debugfs directory\n"); | |
79fb9387 | 1457 | return; |
8eecaf62 | 1458 | } |
79fb9387 | 1459 | |
ef49e4fa MB |
1460 | d = debugfs_create_file("bias_level", 0444, |
1461 | dapm->debugfs_dapm, dapm, | |
1462 | &dapm_bias_fops); | |
1463 | if (!d) | |
1464 | dev_warn(dapm->dev, | |
1465 | "ASoC: Failed to create bias level debugfs file\n"); | |
d5d1e0be | 1466 | } |
ef49e4fa | 1467 | |
d5d1e0be LPC |
1468 | static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w) |
1469 | { | |
1470 | struct snd_soc_dapm_context *dapm = w->dapm; | |
1471 | struct dentry *d; | |
79fb9387 | 1472 | |
d5d1e0be LPC |
1473 | if (!dapm->debugfs_dapm || !w->name) |
1474 | return; | |
1475 | ||
1476 | d = debugfs_create_file(w->name, 0444, | |
1477 | dapm->debugfs_dapm, w, | |
1478 | &dapm_widget_power_fops); | |
1479 | if (!d) | |
1480 | dev_warn(w->dapm->dev, | |
1481 | "ASoC: Failed to create %s debugfs file\n", | |
1482 | w->name); | |
79fb9387 | 1483 | } |
d5d1e0be | 1484 | |
6c45e126 LPC |
1485 | static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm) |
1486 | { | |
1487 | debugfs_remove_recursive(dapm->debugfs_dapm); | |
1488 | } | |
1489 | ||
79fb9387 | 1490 | #else |
8eecaf62 LPC |
1491 | void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm, |
1492 | struct dentry *parent) | |
79fb9387 MB |
1493 | { |
1494 | } | |
d5d1e0be LPC |
1495 | |
1496 | static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w) | |
1497 | { | |
1498 | } | |
1499 | ||
6c45e126 LPC |
1500 | static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm) |
1501 | { | |
1502 | } | |
1503 | ||
79fb9387 MB |
1504 | #endif |
1505 | ||
2b97eabc | 1506 | /* test and update the power status of a mux widget */ |
d9c96cf3 | 1507 | static int dapm_mux_update_power(struct snd_soc_dapm_widget *widget, |
3a65577d MB |
1508 | struct snd_kcontrol *kcontrol, int change, |
1509 | int mux, struct soc_enum *e) | |
2b97eabc RP |
1510 | { |
1511 | struct snd_soc_dapm_path *path; | |
1512 | int found = 0; | |
1513 | ||
eff317d0 | 1514 | if (widget->id != snd_soc_dapm_mux && |
24ff33ac | 1515 | widget->id != snd_soc_dapm_virt_mux && |
eff317d0 | 1516 | widget->id != snd_soc_dapm_value_mux) |
2b97eabc RP |
1517 | return -ENODEV; |
1518 | ||
3a65577d | 1519 | if (!change) |
2b97eabc RP |
1520 | return 0; |
1521 | ||
1522 | /* find dapm widget path assoc with kcontrol */ | |
8ddab3f5 | 1523 | list_for_each_entry(path, &widget->dapm->card->paths, list) { |
2b97eabc RP |
1524 | if (path->kcontrol != kcontrol) |
1525 | continue; | |
1526 | ||
cb01e2b9 | 1527 | if (!path->name || !e->texts[mux]) |
2b97eabc RP |
1528 | continue; |
1529 | ||
1530 | found = 1; | |
1531 | /* we now need to match the string in the enum to the path */ | |
cb01e2b9 | 1532 | if (!(strcmp(path->name, e->texts[mux]))) |
2b97eabc RP |
1533 | path->connect = 1; /* new connection */ |
1534 | else | |
1535 | path->connect = 0; /* old connection must be powered down */ | |
1536 | } | |
1537 | ||
b91b8fa0 | 1538 | if (found) |
ce6120cc | 1539 | dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc RP |
1540 | |
1541 | return 0; | |
1542 | } | |
2b97eabc | 1543 | |
1b075e3f | 1544 | /* test and update the power status of a mixer or switch widget */ |
d9c96cf3 | 1545 | static int dapm_mixer_update_power(struct snd_soc_dapm_widget *widget, |
283375ce | 1546 | struct snd_kcontrol *kcontrol, int connect) |
2b97eabc RP |
1547 | { |
1548 | struct snd_soc_dapm_path *path; | |
1549 | int found = 0; | |
1550 | ||
1b075e3f | 1551 | if (widget->id != snd_soc_dapm_mixer && |
ca9c1aae | 1552 | widget->id != snd_soc_dapm_mixer_named_ctl && |
1b075e3f | 1553 | widget->id != snd_soc_dapm_switch) |
2b97eabc RP |
1554 | return -ENODEV; |
1555 | ||
2b97eabc | 1556 | /* find dapm widget path assoc with kcontrol */ |
8ddab3f5 | 1557 | list_for_each_entry(path, &widget->dapm->card->paths, list) { |
2b97eabc RP |
1558 | if (path->kcontrol != kcontrol) |
1559 | continue; | |
1560 | ||
1561 | /* found, now check type */ | |
1562 | found = 1; | |
283375ce | 1563 | path->connect = connect; |
2b97eabc RP |
1564 | } |
1565 | ||
b91b8fa0 | 1566 | if (found) |
ce6120cc | 1567 | dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc RP |
1568 | |
1569 | return 0; | |
1570 | } | |
2b97eabc RP |
1571 | |
1572 | /* show dapm widget status in sys fs */ | |
1573 | static ssize_t dapm_widget_show(struct device *dev, | |
1574 | struct device_attribute *attr, char *buf) | |
1575 | { | |
f0fba2ad LG |
1576 | struct snd_soc_pcm_runtime *rtd = |
1577 | container_of(dev, struct snd_soc_pcm_runtime, dev); | |
1578 | struct snd_soc_codec *codec =rtd->codec; | |
2b97eabc RP |
1579 | struct snd_soc_dapm_widget *w; |
1580 | int count = 0; | |
1581 | char *state = "not set"; | |
1582 | ||
97c866de JN |
1583 | list_for_each_entry(w, &codec->card->widgets, list) { |
1584 | if (w->dapm != &codec->dapm) | |
1585 | continue; | |
2b97eabc RP |
1586 | |
1587 | /* only display widgets that burnm power */ | |
1588 | switch (w->id) { | |
1589 | case snd_soc_dapm_hp: | |
1590 | case snd_soc_dapm_mic: | |
1591 | case snd_soc_dapm_spk: | |
1592 | case snd_soc_dapm_line: | |
1593 | case snd_soc_dapm_micbias: | |
1594 | case snd_soc_dapm_dac: | |
1595 | case snd_soc_dapm_adc: | |
1596 | case snd_soc_dapm_pga: | |
d88429a6 | 1597 | case snd_soc_dapm_out_drv: |
2b97eabc | 1598 | case snd_soc_dapm_mixer: |
ca9c1aae | 1599 | case snd_soc_dapm_mixer_named_ctl: |
246d0a17 | 1600 | case snd_soc_dapm_supply: |
2b97eabc RP |
1601 | if (w->name) |
1602 | count += sprintf(buf + count, "%s: %s\n", | |
1603 | w->name, w->power ? "On":"Off"); | |
1604 | break; | |
1605 | default: | |
1606 | break; | |
1607 | } | |
1608 | } | |
1609 | ||
ce6120cc | 1610 | switch (codec->dapm.bias_level) { |
0be9898a MB |
1611 | case SND_SOC_BIAS_ON: |
1612 | state = "On"; | |
2b97eabc | 1613 | break; |
0be9898a MB |
1614 | case SND_SOC_BIAS_PREPARE: |
1615 | state = "Prepare"; | |
2b97eabc | 1616 | break; |
0be9898a MB |
1617 | case SND_SOC_BIAS_STANDBY: |
1618 | state = "Standby"; | |
2b97eabc | 1619 | break; |
0be9898a MB |
1620 | case SND_SOC_BIAS_OFF: |
1621 | state = "Off"; | |
2b97eabc RP |
1622 | break; |
1623 | } | |
1624 | count += sprintf(buf + count, "PM State: %s\n", state); | |
1625 | ||
1626 | return count; | |
1627 | } | |
1628 | ||
1629 | static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL); | |
1630 | ||
1631 | int snd_soc_dapm_sys_add(struct device *dev) | |
1632 | { | |
12ef193d | 1633 | return device_create_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1634 | } |
1635 | ||
1636 | static void snd_soc_dapm_sys_remove(struct device *dev) | |
1637 | { | |
aef90843 | 1638 | device_remove_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1639 | } |
1640 | ||
1641 | /* free all dapm widgets and resources */ | |
ce6120cc | 1642 | static void dapm_free_widgets(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
1643 | { |
1644 | struct snd_soc_dapm_widget *w, *next_w; | |
1645 | struct snd_soc_dapm_path *p, *next_p; | |
1646 | ||
97c866de JN |
1647 | list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) { |
1648 | if (w->dapm != dapm) | |
1649 | continue; | |
2b97eabc | 1650 | list_del(&w->list); |
8ddab3f5 JN |
1651 | /* |
1652 | * remove source and sink paths associated to this widget. | |
1653 | * While removing the path, remove reference to it from both | |
1654 | * source and sink widgets so that path is removed only once. | |
1655 | */ | |
1656 | list_for_each_entry_safe(p, next_p, &w->sources, list_sink) { | |
1657 | list_del(&p->list_sink); | |
1658 | list_del(&p->list_source); | |
1659 | list_del(&p->list); | |
1660 | kfree(p->long_name); | |
1661 | kfree(p); | |
1662 | } | |
1663 | list_for_each_entry_safe(p, next_p, &w->sinks, list_source) { | |
1664 | list_del(&p->list_sink); | |
1665 | list_del(&p->list_source); | |
1666 | list_del(&p->list); | |
1667 | kfree(p->long_name); | |
1668 | kfree(p); | |
1669 | } | |
fad59888 | 1670 | kfree(w->kcontrols); |
ead9b919 | 1671 | kfree(w->name); |
2b97eabc RP |
1672 | kfree(w); |
1673 | } | |
2b97eabc RP |
1674 | } |
1675 | ||
91a5fca4 LPC |
1676 | static struct snd_soc_dapm_widget *dapm_find_widget( |
1677 | struct snd_soc_dapm_context *dapm, const char *pin, | |
1678 | bool search_other_contexts) | |
a5302181 LG |
1679 | { |
1680 | struct snd_soc_dapm_widget *w; | |
91a5fca4 | 1681 | struct snd_soc_dapm_widget *fallback = NULL; |
a5302181 | 1682 | |
97c866de | 1683 | list_for_each_entry(w, &dapm->card->widgets, list) { |
a5302181 | 1684 | if (!strcmp(w->name, pin)) { |
91a5fca4 LPC |
1685 | if (w->dapm == dapm) |
1686 | return w; | |
1687 | else | |
1688 | fallback = w; | |
a5302181 LG |
1689 | } |
1690 | } | |
1691 | ||
91a5fca4 LPC |
1692 | if (search_other_contexts) |
1693 | return fallback; | |
1694 | ||
1695 | return NULL; | |
1696 | } | |
1697 | ||
1698 | static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm, | |
1699 | const char *pin, int status) | |
1700 | { | |
1701 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); | |
1702 | ||
1703 | if (!w) { | |
1704 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); | |
1705 | return -EINVAL; | |
0d86733c MB |
1706 | } |
1707 | ||
91a5fca4 LPC |
1708 | w->connected = status; |
1709 | if (status == 0) | |
1710 | w->force = 0; | |
1711 | ||
1712 | return 0; | |
a5302181 LG |
1713 | } |
1714 | ||
2b97eabc | 1715 | /** |
a5302181 | 1716 | * snd_soc_dapm_sync - scan and power dapm paths |
ce6120cc | 1717 | * @dapm: DAPM context |
2b97eabc RP |
1718 | * |
1719 | * Walks all dapm audio paths and powers widgets according to their | |
1720 | * stream or path usage. | |
1721 | * | |
1722 | * Returns 0 for success. | |
1723 | */ | |
ce6120cc | 1724 | int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm) |
2b97eabc | 1725 | { |
ce6120cc | 1726 | return dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc | 1727 | } |
a5302181 | 1728 | EXPORT_SYMBOL_GPL(snd_soc_dapm_sync); |
2b97eabc | 1729 | |
ce6120cc | 1730 | static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm, |
215edda3 | 1731 | const struct snd_soc_dapm_route *route) |
2b97eabc RP |
1732 | { |
1733 | struct snd_soc_dapm_path *path; | |
1734 | struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w; | |
97c866de | 1735 | struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL; |
ead9b919 | 1736 | const char *sink; |
215edda3 | 1737 | const char *control = route->control; |
ead9b919 JN |
1738 | const char *source; |
1739 | char prefixed_sink[80]; | |
1740 | char prefixed_source[80]; | |
2b97eabc RP |
1741 | int ret = 0; |
1742 | ||
88e8b9a8 | 1743 | if (dapm->codec && dapm->codec->name_prefix) { |
ead9b919 JN |
1744 | snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s", |
1745 | dapm->codec->name_prefix, route->sink); | |
1746 | sink = prefixed_sink; | |
1747 | snprintf(prefixed_source, sizeof(prefixed_source), "%s %s", | |
1748 | dapm->codec->name_prefix, route->source); | |
1749 | source = prefixed_source; | |
1750 | } else { | |
1751 | sink = route->sink; | |
1752 | source = route->source; | |
1753 | } | |
1754 | ||
97c866de JN |
1755 | /* |
1756 | * find src and dest widgets over all widgets but favor a widget from | |
1757 | * current DAPM context | |
1758 | */ | |
1759 | list_for_each_entry(w, &dapm->card->widgets, list) { | |
2b97eabc | 1760 | if (!wsink && !(strcmp(w->name, sink))) { |
97c866de JN |
1761 | wtsink = w; |
1762 | if (w->dapm == dapm) | |
1763 | wsink = w; | |
2b97eabc RP |
1764 | continue; |
1765 | } | |
1766 | if (!wsource && !(strcmp(w->name, source))) { | |
97c866de JN |
1767 | wtsource = w; |
1768 | if (w->dapm == dapm) | |
1769 | wsource = w; | |
2b97eabc RP |
1770 | } |
1771 | } | |
97c866de JN |
1772 | /* use widget from another DAPM context if not found from this */ |
1773 | if (!wsink) | |
1774 | wsink = wtsink; | |
1775 | if (!wsource) | |
1776 | wsource = wtsource; | |
2b97eabc RP |
1777 | |
1778 | if (wsource == NULL || wsink == NULL) | |
1779 | return -ENODEV; | |
1780 | ||
1781 | path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL); | |
1782 | if (!path) | |
1783 | return -ENOMEM; | |
1784 | ||
1785 | path->source = wsource; | |
1786 | path->sink = wsink; | |
215edda3 | 1787 | path->connected = route->connected; |
2b97eabc RP |
1788 | INIT_LIST_HEAD(&path->list); |
1789 | INIT_LIST_HEAD(&path->list_source); | |
1790 | INIT_LIST_HEAD(&path->list_sink); | |
1791 | ||
1792 | /* check for external widgets */ | |
1793 | if (wsink->id == snd_soc_dapm_input) { | |
1794 | if (wsource->id == snd_soc_dapm_micbias || | |
1795 | wsource->id == snd_soc_dapm_mic || | |
087d53ab RC |
1796 | wsource->id == snd_soc_dapm_line || |
1797 | wsource->id == snd_soc_dapm_output) | |
2b97eabc RP |
1798 | wsink->ext = 1; |
1799 | } | |
1800 | if (wsource->id == snd_soc_dapm_output) { | |
1801 | if (wsink->id == snd_soc_dapm_spk || | |
1802 | wsink->id == snd_soc_dapm_hp || | |
1e39221e SF |
1803 | wsink->id == snd_soc_dapm_line || |
1804 | wsink->id == snd_soc_dapm_input) | |
2b97eabc RP |
1805 | wsource->ext = 1; |
1806 | } | |
1807 | ||
1808 | /* connect static paths */ | |
1809 | if (control == NULL) { | |
8ddab3f5 | 1810 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
1811 | list_add(&path->list_sink, &wsink->sources); |
1812 | list_add(&path->list_source, &wsource->sinks); | |
1813 | path->connect = 1; | |
1814 | return 0; | |
1815 | } | |
1816 | ||
1817 | /* connect dynamic paths */ | |
dc2bea61 | 1818 | switch (wsink->id) { |
2b97eabc RP |
1819 | case snd_soc_dapm_adc: |
1820 | case snd_soc_dapm_dac: | |
1821 | case snd_soc_dapm_pga: | |
d88429a6 | 1822 | case snd_soc_dapm_out_drv: |
2b97eabc RP |
1823 | case snd_soc_dapm_input: |
1824 | case snd_soc_dapm_output: | |
1825 | case snd_soc_dapm_micbias: | |
1826 | case snd_soc_dapm_vmid: | |
1827 | case snd_soc_dapm_pre: | |
1828 | case snd_soc_dapm_post: | |
246d0a17 | 1829 | case snd_soc_dapm_supply: |
010ff262 MB |
1830 | case snd_soc_dapm_aif_in: |
1831 | case snd_soc_dapm_aif_out: | |
8ddab3f5 | 1832 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
1833 | list_add(&path->list_sink, &wsink->sources); |
1834 | list_add(&path->list_source, &wsource->sinks); | |
1835 | path->connect = 1; | |
1836 | return 0; | |
1837 | case snd_soc_dapm_mux: | |
24ff33ac | 1838 | case snd_soc_dapm_virt_mux: |
74155556 | 1839 | case snd_soc_dapm_value_mux: |
ce6120cc | 1840 | ret = dapm_connect_mux(dapm, wsource, wsink, path, control, |
82cfecdc | 1841 | &wsink->kcontrol_news[0]); |
2b97eabc RP |
1842 | if (ret != 0) |
1843 | goto err; | |
1844 | break; | |
1845 | case snd_soc_dapm_switch: | |
1846 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1847 | case snd_soc_dapm_mixer_named_ctl: |
ce6120cc | 1848 | ret = dapm_connect_mixer(dapm, wsource, wsink, path, control); |
2b97eabc RP |
1849 | if (ret != 0) |
1850 | goto err; | |
1851 | break; | |
1852 | case snd_soc_dapm_hp: | |
1853 | case snd_soc_dapm_mic: | |
1854 | case snd_soc_dapm_line: | |
1855 | case snd_soc_dapm_spk: | |
8ddab3f5 | 1856 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
1857 | list_add(&path->list_sink, &wsink->sources); |
1858 | list_add(&path->list_source, &wsource->sinks); | |
1859 | path->connect = 0; | |
1860 | return 0; | |
1861 | } | |
1862 | return 0; | |
1863 | ||
1864 | err: | |
f7d41ae8 JN |
1865 | dev_warn(dapm->dev, "asoc: no dapm match for %s --> %s --> %s\n", |
1866 | source, control, sink); | |
2b97eabc RP |
1867 | kfree(path); |
1868 | return ret; | |
1869 | } | |
105f1c28 | 1870 | |
105f1c28 MB |
1871 | /** |
1872 | * snd_soc_dapm_add_routes - Add routes between DAPM widgets | |
ce6120cc | 1873 | * @dapm: DAPM context |
105f1c28 MB |
1874 | * @route: audio routes |
1875 | * @num: number of routes | |
1876 | * | |
1877 | * Connects 2 dapm widgets together via a named audio path. The sink is | |
1878 | * the widget receiving the audio signal, whilst the source is the sender | |
1879 | * of the audio signal. | |
1880 | * | |
1881 | * Returns 0 for success else error. On error all resources can be freed | |
1882 | * with a call to snd_soc_card_free(). | |
1883 | */ | |
ce6120cc | 1884 | int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm, |
105f1c28 MB |
1885 | const struct snd_soc_dapm_route *route, int num) |
1886 | { | |
1887 | int i, ret; | |
1888 | ||
1889 | for (i = 0; i < num; i++) { | |
ce6120cc | 1890 | ret = snd_soc_dapm_add_route(dapm, route); |
105f1c28 | 1891 | if (ret < 0) { |
f7d41ae8 JN |
1892 | dev_err(dapm->dev, "Failed to add route %s->%s\n", |
1893 | route->source, route->sink); | |
105f1c28 MB |
1894 | return ret; |
1895 | } | |
1896 | route++; | |
1897 | } | |
1898 | ||
1899 | return 0; | |
1900 | } | |
1901 | EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes); | |
1902 | ||
bf3a9e13 MB |
1903 | static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context *dapm, |
1904 | const struct snd_soc_dapm_route *route) | |
1905 | { | |
1906 | struct snd_soc_dapm_widget *source = dapm_find_widget(dapm, | |
1907 | route->source, | |
1908 | true); | |
1909 | struct snd_soc_dapm_widget *sink = dapm_find_widget(dapm, | |
1910 | route->sink, | |
1911 | true); | |
1912 | struct snd_soc_dapm_path *path; | |
1913 | int count = 0; | |
1914 | ||
1915 | if (!source) { | |
1916 | dev_err(dapm->dev, "Unable to find source %s for weak route\n", | |
1917 | route->source); | |
1918 | return -ENODEV; | |
1919 | } | |
1920 | ||
1921 | if (!sink) { | |
1922 | dev_err(dapm->dev, "Unable to find sink %s for weak route\n", | |
1923 | route->sink); | |
1924 | return -ENODEV; | |
1925 | } | |
1926 | ||
1927 | if (route->control || route->connected) | |
1928 | dev_warn(dapm->dev, "Ignoring control for weak route %s->%s\n", | |
1929 | route->source, route->sink); | |
1930 | ||
1931 | list_for_each_entry(path, &source->sinks, list_source) { | |
1932 | if (path->sink == sink) { | |
1933 | path->weak = 1; | |
1934 | count++; | |
1935 | } | |
1936 | } | |
1937 | ||
1938 | if (count == 0) | |
1939 | dev_err(dapm->dev, "No path found for weak route %s->%s\n", | |
1940 | route->source, route->sink); | |
1941 | if (count > 1) | |
1942 | dev_warn(dapm->dev, "%d paths found for weak route %s->%s\n", | |
1943 | count, route->source, route->sink); | |
1944 | ||
1945 | return 0; | |
1946 | } | |
1947 | ||
1948 | /** | |
1949 | * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak | |
1950 | * @dapm: DAPM context | |
1951 | * @route: audio routes | |
1952 | * @num: number of routes | |
1953 | * | |
1954 | * Mark existing routes matching those specified in the passed array | |
1955 | * as being weak, meaning that they are ignored for the purpose of | |
1956 | * power decisions. The main intended use case is for sidetone paths | |
1957 | * which couple audio between other independent paths if they are both | |
1958 | * active in order to make the combination work better at the user | |
1959 | * level but which aren't intended to be "used". | |
1960 | * | |
1961 | * Note that CODEC drivers should not use this as sidetone type paths | |
1962 | * can frequently also be used as bypass paths. | |
1963 | */ | |
1964 | int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context *dapm, | |
1965 | const struct snd_soc_dapm_route *route, int num) | |
1966 | { | |
1967 | int i, err; | |
1968 | int ret = 0; | |
1969 | ||
1970 | for (i = 0; i < num; i++) { | |
1971 | err = snd_soc_dapm_weak_route(dapm, route); | |
1972 | if (err) | |
1973 | ret = err; | |
1974 | route++; | |
1975 | } | |
1976 | ||
1977 | return ret; | |
1978 | } | |
1979 | EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes); | |
1980 | ||
2b97eabc RP |
1981 | /** |
1982 | * snd_soc_dapm_new_widgets - add new dapm widgets | |
ce6120cc | 1983 | * @dapm: DAPM context |
2b97eabc RP |
1984 | * |
1985 | * Checks the codec for any new dapm widgets and creates them if found. | |
1986 | * | |
1987 | * Returns 0 for success. | |
1988 | */ | |
ce6120cc | 1989 | int snd_soc_dapm_new_widgets(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
1990 | { |
1991 | struct snd_soc_dapm_widget *w; | |
b66a70d5 | 1992 | unsigned int val; |
2b97eabc | 1993 | |
97c866de | 1994 | list_for_each_entry(w, &dapm->card->widgets, list) |
2b97eabc RP |
1995 | { |
1996 | if (w->new) | |
1997 | continue; | |
1998 | ||
fad59888 SW |
1999 | if (w->num_kcontrols) { |
2000 | w->kcontrols = kzalloc(w->num_kcontrols * | |
2001 | sizeof(struct snd_kcontrol *), | |
2002 | GFP_KERNEL); | |
2003 | if (!w->kcontrols) | |
2004 | return -ENOMEM; | |
2005 | } | |
2006 | ||
2b97eabc RP |
2007 | switch(w->id) { |
2008 | case snd_soc_dapm_switch: | |
2009 | case snd_soc_dapm_mixer: | |
ca9c1aae | 2010 | case snd_soc_dapm_mixer_named_ctl: |
b75576d7 | 2011 | w->power_check = dapm_generic_check_power; |
4b80b8c2 | 2012 | dapm_new_mixer(w); |
2b97eabc RP |
2013 | break; |
2014 | case snd_soc_dapm_mux: | |
24ff33ac | 2015 | case snd_soc_dapm_virt_mux: |
2e72f8e3 | 2016 | case snd_soc_dapm_value_mux: |
b75576d7 | 2017 | w->power_check = dapm_generic_check_power; |
4b80b8c2 | 2018 | dapm_new_mux(w); |
2b97eabc RP |
2019 | break; |
2020 | case snd_soc_dapm_adc: | |
010ff262 | 2021 | case snd_soc_dapm_aif_out: |
b75576d7 MB |
2022 | w->power_check = dapm_adc_check_power; |
2023 | break; | |
2b97eabc | 2024 | case snd_soc_dapm_dac: |
010ff262 | 2025 | case snd_soc_dapm_aif_in: |
b75576d7 MB |
2026 | w->power_check = dapm_dac_check_power; |
2027 | break; | |
2b97eabc | 2028 | case snd_soc_dapm_pga: |
d88429a6 | 2029 | case snd_soc_dapm_out_drv: |
b75576d7 | 2030 | w->power_check = dapm_generic_check_power; |
4b80b8c2 | 2031 | dapm_new_pga(w); |
2b97eabc RP |
2032 | break; |
2033 | case snd_soc_dapm_input: | |
2034 | case snd_soc_dapm_output: | |
2035 | case snd_soc_dapm_micbias: | |
2036 | case snd_soc_dapm_spk: | |
2037 | case snd_soc_dapm_hp: | |
2038 | case snd_soc_dapm_mic: | |
2039 | case snd_soc_dapm_line: | |
b75576d7 MB |
2040 | w->power_check = dapm_generic_check_power; |
2041 | break; | |
246d0a17 MB |
2042 | case snd_soc_dapm_supply: |
2043 | w->power_check = dapm_supply_check_power; | |
2b97eabc RP |
2044 | case snd_soc_dapm_vmid: |
2045 | case snd_soc_dapm_pre: | |
2046 | case snd_soc_dapm_post: | |
2047 | break; | |
2048 | } | |
b66a70d5 MB |
2049 | |
2050 | /* Read the initial power state from the device */ | |
2051 | if (w->reg >= 0) { | |
0445bdf4 | 2052 | val = soc_widget_read(w, w->reg); |
b66a70d5 MB |
2053 | val &= 1 << w->shift; |
2054 | if (w->invert) | |
2055 | val = !val; | |
2056 | ||
2057 | if (val) | |
2058 | w->power = 1; | |
2059 | } | |
2060 | ||
2b97eabc | 2061 | w->new = 1; |
d5d1e0be LPC |
2062 | |
2063 | dapm_debugfs_add_widget(w); | |
2b97eabc RP |
2064 | } |
2065 | ||
ce6120cc | 2066 | dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc RP |
2067 | return 0; |
2068 | } | |
2069 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets); | |
2070 | ||
2071 | /** | |
2072 | * snd_soc_dapm_get_volsw - dapm mixer get callback | |
2073 | * @kcontrol: mixer control | |
ac11a2b3 | 2074 | * @ucontrol: control element information |
2b97eabc RP |
2075 | * |
2076 | * Callback to get the value of a dapm mixer control. | |
2077 | * | |
2078 | * Returns 0 for success. | |
2079 | */ | |
2080 | int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol, | |
2081 | struct snd_ctl_elem_value *ucontrol) | |
2082 | { | |
fafd2176 SW |
2083 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2084 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
4eaa9819 JS |
2085 | struct soc_mixer_control *mc = |
2086 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
2087 | unsigned int reg = mc->reg; |
2088 | unsigned int shift = mc->shift; | |
2089 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 2090 | int max = mc->max; |
815ecf8d JS |
2091 | unsigned int invert = mc->invert; |
2092 | unsigned int mask = (1 << fls(max)) - 1; | |
2b97eabc | 2093 | |
2b97eabc RP |
2094 | ucontrol->value.integer.value[0] = |
2095 | (snd_soc_read(widget->codec, reg) >> shift) & mask; | |
2096 | if (shift != rshift) | |
2097 | ucontrol->value.integer.value[1] = | |
2098 | (snd_soc_read(widget->codec, reg) >> rshift) & mask; | |
2099 | if (invert) { | |
2100 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 2101 | max - ucontrol->value.integer.value[0]; |
2b97eabc RP |
2102 | if (shift != rshift) |
2103 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 2104 | max - ucontrol->value.integer.value[1]; |
2b97eabc RP |
2105 | } |
2106 | ||
2107 | return 0; | |
2108 | } | |
2109 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw); | |
2110 | ||
2111 | /** | |
2112 | * snd_soc_dapm_put_volsw - dapm mixer set callback | |
2113 | * @kcontrol: mixer control | |
ac11a2b3 | 2114 | * @ucontrol: control element information |
2b97eabc RP |
2115 | * |
2116 | * Callback to set the value of a dapm mixer control. | |
2117 | * | |
2118 | * Returns 0 for success. | |
2119 | */ | |
2120 | int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, | |
2121 | struct snd_ctl_elem_value *ucontrol) | |
2122 | { | |
fafd2176 SW |
2123 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2124 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2125 | struct snd_soc_codec *codec = widget->codec; | |
4eaa9819 JS |
2126 | struct soc_mixer_control *mc = |
2127 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
2128 | unsigned int reg = mc->reg; |
2129 | unsigned int shift = mc->shift; | |
4eaa9819 | 2130 | int max = mc->max; |
815ecf8d JS |
2131 | unsigned int mask = (1 << fls(max)) - 1; |
2132 | unsigned int invert = mc->invert; | |
e9cf7049 | 2133 | unsigned int val; |
97404f2e MB |
2134 | int connect, change; |
2135 | struct snd_soc_dapm_update update; | |
fafd2176 | 2136 | int wi; |
2b97eabc RP |
2137 | |
2138 | val = (ucontrol->value.integer.value[0] & mask); | |
2139 | ||
2140 | if (invert) | |
a7a4ac86 | 2141 | val = max - val; |
e9cf7049 | 2142 | mask = mask << shift; |
2b97eabc | 2143 | val = val << shift; |
2b97eabc | 2144 | |
fafd2176 SW |
2145 | if (val) |
2146 | /* new connection */ | |
2147 | connect = invert ? 0 : 1; | |
2148 | else | |
2149 | /* old connection must be powered down */ | |
2150 | connect = invert ? 1 : 0; | |
2151 | ||
2152 | mutex_lock(&codec->mutex); | |
2b97eabc | 2153 | |
e9cf7049 | 2154 | change = snd_soc_test_bits(widget->codec, reg, mask, val); |
97404f2e | 2155 | if (change) { |
fafd2176 SW |
2156 | for (wi = 0; wi < wlist->num_widgets; wi++) { |
2157 | widget = wlist->widgets[wi]; | |
283375ce | 2158 | |
fafd2176 | 2159 | widget->value = val; |
97404f2e | 2160 | |
fafd2176 SW |
2161 | update.kcontrol = kcontrol; |
2162 | update.widget = widget; | |
2163 | update.reg = reg; | |
2164 | update.mask = mask; | |
2165 | update.val = val; | |
2166 | widget->dapm->update = &update; | |
97404f2e | 2167 | |
fafd2176 SW |
2168 | dapm_mixer_update_power(widget, kcontrol, connect); |
2169 | ||
2170 | widget->dapm->update = NULL; | |
2171 | } | |
283375ce MB |
2172 | } |
2173 | ||
fafd2176 | 2174 | mutex_unlock(&codec->mutex); |
97404f2e | 2175 | return 0; |
2b97eabc RP |
2176 | } |
2177 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw); | |
2178 | ||
2179 | /** | |
2180 | * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback | |
2181 | * @kcontrol: mixer control | |
ac11a2b3 | 2182 | * @ucontrol: control element information |
2b97eabc RP |
2183 | * |
2184 | * Callback to get the value of a dapm enumerated double mixer control. | |
2185 | * | |
2186 | * Returns 0 for success. | |
2187 | */ | |
2188 | int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol, | |
2189 | struct snd_ctl_elem_value *ucontrol) | |
2190 | { | |
fafd2176 SW |
2191 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2192 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2b97eabc | 2193 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f | 2194 | unsigned int val, bitmask; |
2b97eabc | 2195 | |
f8ba0b7b | 2196 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
2197 | ; |
2198 | val = snd_soc_read(widget->codec, e->reg); | |
2199 | ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1); | |
2200 | if (e->shift_l != e->shift_r) | |
2201 | ucontrol->value.enumerated.item[1] = | |
2202 | (val >> e->shift_r) & (bitmask - 1); | |
2203 | ||
2204 | return 0; | |
2205 | } | |
2206 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double); | |
2207 | ||
2208 | /** | |
2209 | * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback | |
2210 | * @kcontrol: mixer control | |
ac11a2b3 | 2211 | * @ucontrol: control element information |
2b97eabc RP |
2212 | * |
2213 | * Callback to set the value of a dapm enumerated double mixer control. | |
2214 | * | |
2215 | * Returns 0 for success. | |
2216 | */ | |
2217 | int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, | |
2218 | struct snd_ctl_elem_value *ucontrol) | |
2219 | { | |
fafd2176 SW |
2220 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2221 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2222 | struct snd_soc_codec *codec = widget->codec; | |
2b97eabc | 2223 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
3a65577d | 2224 | unsigned int val, mux, change; |
46f5822f | 2225 | unsigned int mask, bitmask; |
97404f2e | 2226 | struct snd_soc_dapm_update update; |
fafd2176 | 2227 | int wi; |
2b97eabc | 2228 | |
f8ba0b7b | 2229 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc | 2230 | ; |
f8ba0b7b | 2231 | if (ucontrol->value.enumerated.item[0] > e->max - 1) |
2b97eabc RP |
2232 | return -EINVAL; |
2233 | mux = ucontrol->value.enumerated.item[0]; | |
2234 | val = mux << e->shift_l; | |
2235 | mask = (bitmask - 1) << e->shift_l; | |
2236 | if (e->shift_l != e->shift_r) { | |
f8ba0b7b | 2237 | if (ucontrol->value.enumerated.item[1] > e->max - 1) |
2b97eabc RP |
2238 | return -EINVAL; |
2239 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
2240 | mask |= (bitmask - 1) << e->shift_r; | |
2241 | } | |
2242 | ||
fafd2176 SW |
2243 | mutex_lock(&codec->mutex); |
2244 | ||
3a65577d | 2245 | change = snd_soc_test_bits(widget->codec, e->reg, mask, val); |
fafd2176 SW |
2246 | if (change) { |
2247 | for (wi = 0; wi < wlist->num_widgets; wi++) { | |
2248 | widget = wlist->widgets[wi]; | |
2249 | ||
2250 | widget->value = val; | |
1642e3d4 | 2251 | |
fafd2176 SW |
2252 | update.kcontrol = kcontrol; |
2253 | update.widget = widget; | |
2254 | update.reg = e->reg; | |
2255 | update.mask = mask; | |
2256 | update.val = val; | |
2257 | widget->dapm->update = &update; | |
1642e3d4 | 2258 | |
fafd2176 | 2259 | dapm_mux_update_power(widget, kcontrol, change, mux, e); |
1642e3d4 | 2260 | |
fafd2176 SW |
2261 | widget->dapm->update = NULL; |
2262 | } | |
2263 | } | |
2b97eabc | 2264 | |
fafd2176 | 2265 | mutex_unlock(&codec->mutex); |
97404f2e | 2266 | return change; |
2b97eabc RP |
2267 | } |
2268 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double); | |
2269 | ||
d2b247a8 MB |
2270 | /** |
2271 | * snd_soc_dapm_get_enum_virt - Get virtual DAPM mux | |
2272 | * @kcontrol: mixer control | |
2273 | * @ucontrol: control element information | |
2274 | * | |
2275 | * Returns 0 for success. | |
2276 | */ | |
2277 | int snd_soc_dapm_get_enum_virt(struct snd_kcontrol *kcontrol, | |
2278 | struct snd_ctl_elem_value *ucontrol) | |
2279 | { | |
fafd2176 SW |
2280 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2281 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
d2b247a8 MB |
2282 | |
2283 | ucontrol->value.enumerated.item[0] = widget->value; | |
2284 | ||
2285 | return 0; | |
2286 | } | |
2287 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_virt); | |
2288 | ||
2289 | /** | |
2290 | * snd_soc_dapm_put_enum_virt - Set virtual DAPM mux | |
2291 | * @kcontrol: mixer control | |
2292 | * @ucontrol: control element information | |
2293 | * | |
2294 | * Returns 0 for success. | |
2295 | */ | |
2296 | int snd_soc_dapm_put_enum_virt(struct snd_kcontrol *kcontrol, | |
2297 | struct snd_ctl_elem_value *ucontrol) | |
2298 | { | |
fafd2176 SW |
2299 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2300 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2301 | struct snd_soc_codec *codec = widget->codec; | |
d2b247a8 MB |
2302 | struct soc_enum *e = |
2303 | (struct soc_enum *)kcontrol->private_value; | |
2304 | int change; | |
2305 | int ret = 0; | |
fafd2176 | 2306 | int wi; |
d2b247a8 MB |
2307 | |
2308 | if (ucontrol->value.enumerated.item[0] >= e->max) | |
2309 | return -EINVAL; | |
2310 | ||
fafd2176 | 2311 | mutex_lock(&codec->mutex); |
d2b247a8 MB |
2312 | |
2313 | change = widget->value != ucontrol->value.enumerated.item[0]; | |
fafd2176 SW |
2314 | if (change) { |
2315 | for (wi = 0; wi < wlist->num_widgets; wi++) { | |
2316 | widget = wlist->widgets[wi]; | |
2317 | ||
2318 | widget->value = ucontrol->value.enumerated.item[0]; | |
2319 | ||
2320 | dapm_mux_update_power(widget, kcontrol, change, | |
2321 | widget->value, e); | |
2322 | } | |
2323 | } | |
d2b247a8 | 2324 | |
fafd2176 | 2325 | mutex_unlock(&codec->mutex); |
d2b247a8 MB |
2326 | return ret; |
2327 | } | |
2328 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt); | |
2329 | ||
2e72f8e3 PU |
2330 | /** |
2331 | * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get | |
2332 | * callback | |
2333 | * @kcontrol: mixer control | |
2334 | * @ucontrol: control element information | |
2335 | * | |
2336 | * Callback to get the value of a dapm semi enumerated double mixer control. | |
2337 | * | |
2338 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
2339 | * used for handling bitfield coded enumeration for example. | |
2340 | * | |
2341 | * Returns 0 for success. | |
2342 | */ | |
2343 | int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol *kcontrol, | |
2344 | struct snd_ctl_elem_value *ucontrol) | |
2345 | { | |
fafd2176 SW |
2346 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2347 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
74155556 | 2348 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f | 2349 | unsigned int reg_val, val, mux; |
2e72f8e3 PU |
2350 | |
2351 | reg_val = snd_soc_read(widget->codec, e->reg); | |
2352 | val = (reg_val >> e->shift_l) & e->mask; | |
2353 | for (mux = 0; mux < e->max; mux++) { | |
2354 | if (val == e->values[mux]) | |
2355 | break; | |
2356 | } | |
2357 | ucontrol->value.enumerated.item[0] = mux; | |
2358 | if (e->shift_l != e->shift_r) { | |
2359 | val = (reg_val >> e->shift_r) & e->mask; | |
2360 | for (mux = 0; mux < e->max; mux++) { | |
2361 | if (val == e->values[mux]) | |
2362 | break; | |
2363 | } | |
2364 | ucontrol->value.enumerated.item[1] = mux; | |
2365 | } | |
2366 | ||
2367 | return 0; | |
2368 | } | |
2369 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double); | |
2370 | ||
2371 | /** | |
2372 | * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set | |
2373 | * callback | |
2374 | * @kcontrol: mixer control | |
2375 | * @ucontrol: control element information | |
2376 | * | |
2377 | * Callback to set the value of a dapm semi enumerated double mixer control. | |
2378 | * | |
2379 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
2380 | * used for handling bitfield coded enumeration for example. | |
2381 | * | |
2382 | * Returns 0 for success. | |
2383 | */ | |
2384 | int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol, | |
2385 | struct snd_ctl_elem_value *ucontrol) | |
2386 | { | |
fafd2176 SW |
2387 | struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); |
2388 | struct snd_soc_dapm_widget *widget = wlist->widgets[0]; | |
2389 | struct snd_soc_codec *codec = widget->codec; | |
74155556 | 2390 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
3a65577d | 2391 | unsigned int val, mux, change; |
46f5822f | 2392 | unsigned int mask; |
97404f2e | 2393 | struct snd_soc_dapm_update update; |
fafd2176 | 2394 | int wi; |
2e72f8e3 PU |
2395 | |
2396 | if (ucontrol->value.enumerated.item[0] > e->max - 1) | |
2397 | return -EINVAL; | |
2398 | mux = ucontrol->value.enumerated.item[0]; | |
2399 | val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l; | |
2400 | mask = e->mask << e->shift_l; | |
2401 | if (e->shift_l != e->shift_r) { | |
2402 | if (ucontrol->value.enumerated.item[1] > e->max - 1) | |
2403 | return -EINVAL; | |
2404 | val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r; | |
2405 | mask |= e->mask << e->shift_r; | |
2406 | } | |
2407 | ||
fafd2176 SW |
2408 | mutex_lock(&codec->mutex); |
2409 | ||
3a65577d | 2410 | change = snd_soc_test_bits(widget->codec, e->reg, mask, val); |
fafd2176 SW |
2411 | if (change) { |
2412 | for (wi = 0; wi < wlist->num_widgets; wi++) { | |
2413 | widget = wlist->widgets[wi]; | |
1642e3d4 | 2414 | |
fafd2176 | 2415 | widget->value = val; |
1642e3d4 | 2416 | |
fafd2176 SW |
2417 | update.kcontrol = kcontrol; |
2418 | update.widget = widget; | |
2419 | update.reg = e->reg; | |
2420 | update.mask = mask; | |
2421 | update.val = val; | |
2422 | widget->dapm->update = &update; | |
1642e3d4 | 2423 | |
fafd2176 SW |
2424 | dapm_mux_update_power(widget, kcontrol, change, mux, e); |
2425 | ||
2426 | widget->dapm->update = NULL; | |
2427 | } | |
2428 | } | |
2e72f8e3 | 2429 | |
fafd2176 | 2430 | mutex_unlock(&codec->mutex); |
97404f2e | 2431 | return change; |
2e72f8e3 PU |
2432 | } |
2433 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double); | |
2434 | ||
8b37dbd2 MB |
2435 | /** |
2436 | * snd_soc_dapm_info_pin_switch - Info for a pin switch | |
2437 | * | |
2438 | * @kcontrol: mixer control | |
2439 | * @uinfo: control element information | |
2440 | * | |
2441 | * Callback to provide information about a pin switch control. | |
2442 | */ | |
2443 | int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol, | |
2444 | struct snd_ctl_elem_info *uinfo) | |
2445 | { | |
2446 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
2447 | uinfo->count = 1; | |
2448 | uinfo->value.integer.min = 0; | |
2449 | uinfo->value.integer.max = 1; | |
2450 | ||
2451 | return 0; | |
2452 | } | |
2453 | EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch); | |
2454 | ||
2455 | /** | |
2456 | * snd_soc_dapm_get_pin_switch - Get information for a pin switch | |
2457 | * | |
2458 | * @kcontrol: mixer control | |
2459 | * @ucontrol: Value | |
2460 | */ | |
2461 | int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol, | |
2462 | struct snd_ctl_elem_value *ucontrol) | |
2463 | { | |
2464 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
2465 | const char *pin = (const char *)kcontrol->private_value; | |
2466 | ||
2467 | mutex_lock(&codec->mutex); | |
2468 | ||
2469 | ucontrol->value.integer.value[0] = | |
ce6120cc | 2470 | snd_soc_dapm_get_pin_status(&codec->dapm, pin); |
8b37dbd2 MB |
2471 | |
2472 | mutex_unlock(&codec->mutex); | |
2473 | ||
2474 | return 0; | |
2475 | } | |
2476 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch); | |
2477 | ||
2478 | /** | |
2479 | * snd_soc_dapm_put_pin_switch - Set information for a pin switch | |
2480 | * | |
2481 | * @kcontrol: mixer control | |
2482 | * @ucontrol: Value | |
2483 | */ | |
2484 | int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol, | |
2485 | struct snd_ctl_elem_value *ucontrol) | |
2486 | { | |
2487 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
2488 | const char *pin = (const char *)kcontrol->private_value; | |
2489 | ||
2490 | mutex_lock(&codec->mutex); | |
2491 | ||
2492 | if (ucontrol->value.integer.value[0]) | |
ce6120cc | 2493 | snd_soc_dapm_enable_pin(&codec->dapm, pin); |
8b37dbd2 | 2494 | else |
ce6120cc | 2495 | snd_soc_dapm_disable_pin(&codec->dapm, pin); |
8b37dbd2 | 2496 | |
ce6120cc | 2497 | snd_soc_dapm_sync(&codec->dapm); |
8b37dbd2 MB |
2498 | |
2499 | mutex_unlock(&codec->mutex); | |
2500 | ||
2501 | return 0; | |
2502 | } | |
2503 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch); | |
2504 | ||
2b97eabc RP |
2505 | /** |
2506 | * snd_soc_dapm_new_control - create new dapm control | |
ce6120cc | 2507 | * @dapm: DAPM context |
2b97eabc RP |
2508 | * @widget: widget template |
2509 | * | |
2510 | * Creates a new dapm control based upon the template. | |
2511 | * | |
2512 | * Returns 0 for success else error. | |
2513 | */ | |
ce6120cc | 2514 | int snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
2515 | const struct snd_soc_dapm_widget *widget) |
2516 | { | |
2517 | struct snd_soc_dapm_widget *w; | |
ead9b919 | 2518 | size_t name_len; |
2b97eabc RP |
2519 | |
2520 | if ((w = dapm_cnew_widget(widget)) == NULL) | |
2521 | return -ENOMEM; | |
2522 | ||
ead9b919 | 2523 | name_len = strlen(widget->name) + 1; |
88e8b9a8 | 2524 | if (dapm->codec && dapm->codec->name_prefix) |
ead9b919 JN |
2525 | name_len += 1 + strlen(dapm->codec->name_prefix); |
2526 | w->name = kmalloc(name_len, GFP_KERNEL); | |
2527 | if (w->name == NULL) { | |
2528 | kfree(w); | |
2529 | return -ENOMEM; | |
2530 | } | |
88e8b9a8 | 2531 | if (dapm->codec && dapm->codec->name_prefix) |
ead9b919 JN |
2532 | snprintf(w->name, name_len, "%s %s", |
2533 | dapm->codec->name_prefix, widget->name); | |
2534 | else | |
2535 | snprintf(w->name, name_len, "%s", widget->name); | |
2536 | ||
97c866de | 2537 | dapm->n_widgets++; |
ce6120cc LG |
2538 | w->dapm = dapm; |
2539 | w->codec = dapm->codec; | |
b7950641 | 2540 | w->platform = dapm->platform; |
2b97eabc RP |
2541 | INIT_LIST_HEAD(&w->sources); |
2542 | INIT_LIST_HEAD(&w->sinks); | |
2543 | INIT_LIST_HEAD(&w->list); | |
97c866de | 2544 | list_add(&w->list, &dapm->card->widgets); |
2b97eabc RP |
2545 | |
2546 | /* machine layer set ups unconnected pins and insertions */ | |
2547 | w->connected = 1; | |
2548 | return 0; | |
2549 | } | |
2550 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control); | |
2551 | ||
4ba1327a MB |
2552 | /** |
2553 | * snd_soc_dapm_new_controls - create new dapm controls | |
ce6120cc | 2554 | * @dapm: DAPM context |
4ba1327a MB |
2555 | * @widget: widget array |
2556 | * @num: number of widgets | |
2557 | * | |
2558 | * Creates new DAPM controls based upon the templates. | |
2559 | * | |
2560 | * Returns 0 for success else error. | |
2561 | */ | |
ce6120cc | 2562 | int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm, |
4ba1327a MB |
2563 | const struct snd_soc_dapm_widget *widget, |
2564 | int num) | |
2565 | { | |
2566 | int i, ret; | |
2567 | ||
2568 | for (i = 0; i < num; i++) { | |
ce6120cc | 2569 | ret = snd_soc_dapm_new_control(dapm, widget); |
b8b33cb5 | 2570 | if (ret < 0) { |
f7d41ae8 JN |
2571 | dev_err(dapm->dev, |
2572 | "ASoC: Failed to create DAPM control %s: %d\n", | |
2573 | widget->name, ret); | |
4ba1327a | 2574 | return ret; |
b8b33cb5 | 2575 | } |
4ba1327a MB |
2576 | widget++; |
2577 | } | |
2578 | return 0; | |
2579 | } | |
2580 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls); | |
2581 | ||
ce6120cc | 2582 | static void soc_dapm_stream_event(struct snd_soc_dapm_context *dapm, |
f0fba2ad | 2583 | const char *stream, int event) |
2b97eabc RP |
2584 | { |
2585 | struct snd_soc_dapm_widget *w; | |
2586 | ||
97c866de | 2587 | list_for_each_entry(w, &dapm->card->widgets, list) |
2b97eabc | 2588 | { |
97c866de | 2589 | if (!w->sname || w->dapm != dapm) |
2b97eabc | 2590 | continue; |
ee47b364 | 2591 | dev_vdbg(w->dapm->dev, "widget %s\n %s stream %s event %d\n", |
f7d41ae8 | 2592 | w->name, w->sname, stream, event); |
2b97eabc RP |
2593 | if (strstr(w->sname, stream)) { |
2594 | switch(event) { | |
2595 | case SND_SOC_DAPM_STREAM_START: | |
2596 | w->active = 1; | |
2597 | break; | |
2598 | case SND_SOC_DAPM_STREAM_STOP: | |
2599 | w->active = 0; | |
2600 | break; | |
2601 | case SND_SOC_DAPM_STREAM_SUSPEND: | |
2b97eabc | 2602 | case SND_SOC_DAPM_STREAM_RESUME: |
2b97eabc | 2603 | case SND_SOC_DAPM_STREAM_PAUSE_PUSH: |
2b97eabc RP |
2604 | case SND_SOC_DAPM_STREAM_PAUSE_RELEASE: |
2605 | break; | |
2606 | } | |
2607 | } | |
2608 | } | |
2b97eabc | 2609 | |
ce6120cc | 2610 | dapm_power_widgets(dapm, event); |
64a648c2 LG |
2611 | |
2612 | /* do we need to notify any clients that DAPM stream is complete */ | |
2613 | if (dapm->stream_event) | |
2614 | dapm->stream_event(dapm, event); | |
ce6120cc LG |
2615 | } |
2616 | ||
2617 | /** | |
2618 | * snd_soc_dapm_stream_event - send a stream event to the dapm core | |
2619 | * @rtd: PCM runtime data | |
2620 | * @stream: stream name | |
2621 | * @event: stream event | |
2622 | * | |
2623 | * Sends a stream event to the dapm core. The core then makes any | |
2624 | * necessary widget power changes. | |
2625 | * | |
2626 | * Returns 0 for success else error. | |
2627 | */ | |
2628 | int snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, | |
2629 | const char *stream, int event) | |
2630 | { | |
2631 | struct snd_soc_codec *codec = rtd->codec; | |
2632 | ||
2633 | if (stream == NULL) | |
2634 | return 0; | |
2635 | ||
2636 | mutex_lock(&codec->mutex); | |
2637 | soc_dapm_stream_event(&codec->dapm, stream, event); | |
8e8b2d67 | 2638 | mutex_unlock(&codec->mutex); |
2b97eabc RP |
2639 | return 0; |
2640 | } | |
2b97eabc RP |
2641 | |
2642 | /** | |
a5302181 | 2643 | * snd_soc_dapm_enable_pin - enable pin. |
ce6120cc | 2644 | * @dapm: DAPM context |
a5302181 | 2645 | * @pin: pin name |
2b97eabc | 2646 | * |
74b8f955 | 2647 | * Enables input/output pin and its parents or children widgets iff there is |
a5302181 LG |
2648 | * a valid audio route and active audio stream. |
2649 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2650 | * do any widget power switching. | |
2b97eabc | 2651 | */ |
ce6120cc | 2652 | int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin) |
2b97eabc | 2653 | { |
ce6120cc | 2654 | return snd_soc_dapm_set_pin(dapm, pin, 1); |
a5302181 LG |
2655 | } |
2656 | EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin); | |
2b97eabc | 2657 | |
da34183e MB |
2658 | /** |
2659 | * snd_soc_dapm_force_enable_pin - force a pin to be enabled | |
ce6120cc | 2660 | * @dapm: DAPM context |
da34183e MB |
2661 | * @pin: pin name |
2662 | * | |
2663 | * Enables input/output pin regardless of any other state. This is | |
2664 | * intended for use with microphone bias supplies used in microphone | |
2665 | * jack detection. | |
2666 | * | |
2667 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2668 | * do any widget power switching. | |
2669 | */ | |
ce6120cc LG |
2670 | int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm, |
2671 | const char *pin) | |
da34183e | 2672 | { |
91a5fca4 | 2673 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); |
da34183e | 2674 | |
91a5fca4 LPC |
2675 | if (!w) { |
2676 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); | |
2677 | return -EINVAL; | |
0d86733c MB |
2678 | } |
2679 | ||
91a5fca4 LPC |
2680 | dev_dbg(w->dapm->dev, "dapm: force enable pin %s\n", pin); |
2681 | w->connected = 1; | |
2682 | w->force = 1; | |
da34183e | 2683 | |
91a5fca4 | 2684 | return 0; |
da34183e MB |
2685 | } |
2686 | EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin); | |
2687 | ||
a5302181 LG |
2688 | /** |
2689 | * snd_soc_dapm_disable_pin - disable pin. | |
ce6120cc | 2690 | * @dapm: DAPM context |
a5302181 LG |
2691 | * @pin: pin name |
2692 | * | |
74b8f955 | 2693 | * Disables input/output pin and its parents or children widgets. |
a5302181 LG |
2694 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to |
2695 | * do any widget power switching. | |
2696 | */ | |
ce6120cc LG |
2697 | int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm, |
2698 | const char *pin) | |
a5302181 | 2699 | { |
ce6120cc | 2700 | return snd_soc_dapm_set_pin(dapm, pin, 0); |
2b97eabc | 2701 | } |
a5302181 | 2702 | EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin); |
2b97eabc | 2703 | |
5817b52a MB |
2704 | /** |
2705 | * snd_soc_dapm_nc_pin - permanently disable pin. | |
ce6120cc | 2706 | * @dapm: DAPM context |
5817b52a MB |
2707 | * @pin: pin name |
2708 | * | |
2709 | * Marks the specified pin as being not connected, disabling it along | |
2710 | * any parent or child widgets. At present this is identical to | |
2711 | * snd_soc_dapm_disable_pin() but in future it will be extended to do | |
2712 | * additional things such as disabling controls which only affect | |
2713 | * paths through the pin. | |
2714 | * | |
2715 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2716 | * do any widget power switching. | |
2717 | */ | |
ce6120cc | 2718 | int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin) |
5817b52a | 2719 | { |
ce6120cc | 2720 | return snd_soc_dapm_set_pin(dapm, pin, 0); |
5817b52a MB |
2721 | } |
2722 | EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin); | |
2723 | ||
eeec12bf | 2724 | /** |
a5302181 | 2725 | * snd_soc_dapm_get_pin_status - get audio pin status |
ce6120cc | 2726 | * @dapm: DAPM context |
a5302181 | 2727 | * @pin: audio signal pin endpoint (or start point) |
eeec12bf | 2728 | * |
a5302181 | 2729 | * Get audio pin status - connected or disconnected. |
eeec12bf | 2730 | * |
a5302181 | 2731 | * Returns 1 for connected otherwise 0. |
eeec12bf | 2732 | */ |
ce6120cc LG |
2733 | int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm, |
2734 | const char *pin) | |
eeec12bf | 2735 | { |
91a5fca4 | 2736 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); |
eeec12bf | 2737 | |
91a5fca4 LPC |
2738 | if (w) |
2739 | return w->connected; | |
a68b38ad | 2740 | |
eeec12bf GG |
2741 | return 0; |
2742 | } | |
a5302181 | 2743 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status); |
eeec12bf | 2744 | |
1547aba9 MB |
2745 | /** |
2746 | * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint | |
ce6120cc | 2747 | * @dapm: DAPM context |
1547aba9 MB |
2748 | * @pin: audio signal pin endpoint (or start point) |
2749 | * | |
2750 | * Mark the given endpoint or pin as ignoring suspend. When the | |
2751 | * system is disabled a path between two endpoints flagged as ignoring | |
2752 | * suspend will not be disabled. The path must already be enabled via | |
2753 | * normal means at suspend time, it will not be turned on if it was not | |
2754 | * already enabled. | |
2755 | */ | |
ce6120cc LG |
2756 | int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm, |
2757 | const char *pin) | |
1547aba9 | 2758 | { |
91a5fca4 | 2759 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, false); |
1547aba9 | 2760 | |
91a5fca4 LPC |
2761 | if (!w) { |
2762 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); | |
2763 | return -EINVAL; | |
1547aba9 MB |
2764 | } |
2765 | ||
91a5fca4 LPC |
2766 | w->ignore_suspend = 1; |
2767 | ||
2768 | return 0; | |
1547aba9 MB |
2769 | } |
2770 | EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend); | |
2771 | ||
2b97eabc RP |
2772 | /** |
2773 | * snd_soc_dapm_free - free dapm resources | |
728a5222 | 2774 | * @dapm: DAPM context |
2b97eabc RP |
2775 | * |
2776 | * Free all dapm widgets and resources. | |
2777 | */ | |
ce6120cc | 2778 | void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm) |
2b97eabc | 2779 | { |
ce6120cc | 2780 | snd_soc_dapm_sys_remove(dapm->dev); |
6c45e126 | 2781 | dapm_debugfs_cleanup(dapm); |
ce6120cc | 2782 | dapm_free_widgets(dapm); |
7be31be8 | 2783 | list_del(&dapm->list); |
2b97eabc RP |
2784 | } |
2785 | EXPORT_SYMBOL_GPL(snd_soc_dapm_free); | |
2786 | ||
ce6120cc | 2787 | static void soc_dapm_shutdown_codec(struct snd_soc_dapm_context *dapm) |
51737470 | 2788 | { |
51737470 MB |
2789 | struct snd_soc_dapm_widget *w; |
2790 | LIST_HEAD(down_list); | |
2791 | int powerdown = 0; | |
2792 | ||
97c866de JN |
2793 | list_for_each_entry(w, &dapm->card->widgets, list) { |
2794 | if (w->dapm != dapm) | |
2795 | continue; | |
51737470 | 2796 | if (w->power) { |
828a842f | 2797 | dapm_seq_insert(w, &down_list, false); |
c2caa4da | 2798 | w->power = 0; |
51737470 MB |
2799 | powerdown = 1; |
2800 | } | |
2801 | } | |
2802 | ||
2803 | /* If there were no widgets to power down we're already in | |
2804 | * standby. | |
2805 | */ | |
2806 | if (powerdown) { | |
ed5a4c47 | 2807 | snd_soc_dapm_set_bias_level(dapm, SND_SOC_BIAS_PREPARE); |
828a842f | 2808 | dapm_seq_run(dapm, &down_list, 0, false); |
ed5a4c47 | 2809 | snd_soc_dapm_set_bias_level(dapm, SND_SOC_BIAS_STANDBY); |
51737470 | 2810 | } |
f0fba2ad LG |
2811 | } |
2812 | ||
2813 | /* | |
2814 | * snd_soc_dapm_shutdown - callback for system shutdown | |
2815 | */ | |
2816 | void snd_soc_dapm_shutdown(struct snd_soc_card *card) | |
2817 | { | |
2818 | struct snd_soc_codec *codec; | |
2819 | ||
ce6120cc LG |
2820 | list_for_each_entry(codec, &card->codec_dev_list, list) { |
2821 | soc_dapm_shutdown_codec(&codec->dapm); | |
ed5a4c47 | 2822 | snd_soc_dapm_set_bias_level(&codec->dapm, SND_SOC_BIAS_OFF); |
ce6120cc | 2823 | } |
51737470 MB |
2824 | } |
2825 | ||
2b97eabc | 2826 | /* Module information */ |
d331124d | 2827 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
2b97eabc RP |
2828 | MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC"); |
2829 | MODULE_LICENSE("GPL"); |