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Commit | Line | Data |
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db2a4165 FM |
1 | /* |
2 | * soc-core.c -- ALSA SoC Audio Layer | |
3 | * | |
4 | * Copyright 2005 Wolfson Microelectronics PLC. | |
0664d888 LG |
5 | * Copyright 2005 Openedhand Ltd. |
6 | * | |
d331124d | 7 | * Author: Liam Girdwood <lrg@slimlogic.co.uk> |
0664d888 LG |
8 | * with code, comments and ideas from :- |
9 | * Richard Purdie <richard@openedhand.com> | |
db2a4165 FM |
10 | * |
11 | * This program is free software; you can redistribute it and/or modify it | |
12 | * under the terms of the GNU General Public License as published by the | |
13 | * Free Software Foundation; either version 2 of the License, or (at your | |
14 | * option) any later version. | |
15 | * | |
db2a4165 FM |
16 | * TODO: |
17 | * o Add hw rules to enforce rates, etc. | |
18 | * o More testing with other codecs/machines. | |
19 | * o Add more codecs and platforms to ensure good API coverage. | |
20 | * o Support TDM on PCM and I2S | |
21 | */ | |
22 | ||
23 | #include <linux/module.h> | |
24 | #include <linux/moduleparam.h> | |
25 | #include <linux/init.h> | |
26 | #include <linux/delay.h> | |
27 | #include <linux/pm.h> | |
28 | #include <linux/bitops.h> | |
12ef193d | 29 | #include <linux/debugfs.h> |
db2a4165 | 30 | #include <linux/platform_device.h> |
db2a4165 FM |
31 | #include <sound/core.h> |
32 | #include <sound/pcm.h> | |
33 | #include <sound/pcm_params.h> | |
34 | #include <sound/soc.h> | |
35 | #include <sound/soc-dapm.h> | |
36 | #include <sound/initval.h> | |
37 | ||
db2a4165 FM |
38 | static DEFINE_MUTEX(pcm_mutex); |
39 | static DEFINE_MUTEX(io_mutex); | |
db2a4165 FM |
40 | static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq); |
41 | ||
db2a4165 FM |
42 | /* |
43 | * This is a timeout to do a DAPM powerdown after a stream is closed(). | |
44 | * It can be used to eliminate pops between different playback streams, e.g. | |
45 | * between two audio tracks. | |
46 | */ | |
47 | static int pmdown_time = 5000; | |
48 | module_param(pmdown_time, int, 0); | |
49 | MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)"); | |
50 | ||
965ac42c LG |
51 | /* |
52 | * This function forces any delayed work to be queued and run. | |
53 | */ | |
54 | static int run_delayed_work(struct delayed_work *dwork) | |
55 | { | |
56 | int ret; | |
57 | ||
58 | /* cancel any work waiting to be queued. */ | |
59 | ret = cancel_delayed_work(dwork); | |
60 | ||
61 | /* if there was any work waiting then we run it now and | |
62 | * wait for it's completion */ | |
63 | if (ret) { | |
64 | schedule_delayed_work(dwork, 0); | |
65 | flush_scheduled_work(); | |
66 | } | |
67 | return ret; | |
68 | } | |
69 | ||
db2a4165 FM |
70 | #ifdef CONFIG_SND_SOC_AC97_BUS |
71 | /* unregister ac97 codec */ | |
72 | static int soc_ac97_dev_unregister(struct snd_soc_codec *codec) | |
73 | { | |
74 | if (codec->ac97->dev.bus) | |
75 | device_unregister(&codec->ac97->dev); | |
76 | return 0; | |
77 | } | |
78 | ||
79 | /* stop no dev release warning */ | |
80 | static void soc_ac97_device_release(struct device *dev){} | |
81 | ||
82 | /* register ac97 codec to bus */ | |
83 | static int soc_ac97_dev_register(struct snd_soc_codec *codec) | |
84 | { | |
85 | int err; | |
86 | ||
87 | codec->ac97->dev.bus = &ac97_bus_type; | |
88 | codec->ac97->dev.parent = NULL; | |
89 | codec->ac97->dev.release = soc_ac97_device_release; | |
90 | ||
bb072bf0 KS |
91 | dev_set_name(&codec->ac97->dev, "%d-%d:%s", |
92 | codec->card->number, 0, codec->name); | |
db2a4165 FM |
93 | err = device_register(&codec->ac97->dev); |
94 | if (err < 0) { | |
95 | snd_printk(KERN_ERR "Can't register ac97 bus\n"); | |
96 | codec->ac97->dev.bus = NULL; | |
97 | return err; | |
98 | } | |
99 | return 0; | |
100 | } | |
101 | #endif | |
102 | ||
db2a4165 FM |
103 | /* |
104 | * Called by ALSA when a PCM substream is opened, the runtime->hw record is | |
105 | * then initialized and any private data can be allocated. This also calls | |
106 | * startup for the cpu DAI, platform, machine and codec DAI. | |
107 | */ | |
108 | static int soc_pcm_open(struct snd_pcm_substream *substream) | |
109 | { | |
110 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
111 | struct snd_soc_device *socdev = rtd->socdev; | |
87689d56 | 112 | struct snd_soc_card *card = socdev->card; |
db2a4165 | 113 | struct snd_pcm_runtime *runtime = substream->runtime; |
cb666e5b | 114 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 | 115 | struct snd_soc_platform *platform = card->platform; |
3c4b266f LG |
116 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
117 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
118 | int ret = 0; |
119 | ||
120 | mutex_lock(&pcm_mutex); | |
121 | ||
122 | /* startup the audio subsystem */ | |
cb666e5b | 123 | if (cpu_dai->ops.startup) { |
dee89c4d | 124 | ret = cpu_dai->ops.startup(substream, cpu_dai); |
db2a4165 FM |
125 | if (ret < 0) { |
126 | printk(KERN_ERR "asoc: can't open interface %s\n", | |
cb666e5b | 127 | cpu_dai->name); |
db2a4165 FM |
128 | goto out; |
129 | } | |
130 | } | |
131 | ||
132 | if (platform->pcm_ops->open) { | |
133 | ret = platform->pcm_ops->open(substream); | |
134 | if (ret < 0) { | |
135 | printk(KERN_ERR "asoc: can't open platform %s\n", platform->name); | |
136 | goto platform_err; | |
137 | } | |
138 | } | |
139 | ||
cb666e5b | 140 | if (codec_dai->ops.startup) { |
dee89c4d | 141 | ret = codec_dai->ops.startup(substream, codec_dai); |
db2a4165 | 142 | if (ret < 0) { |
cb666e5b LG |
143 | printk(KERN_ERR "asoc: can't open codec %s\n", |
144 | codec_dai->name); | |
145 | goto codec_dai_err; | |
db2a4165 FM |
146 | } |
147 | } | |
148 | ||
cb666e5b LG |
149 | if (machine->ops && machine->ops->startup) { |
150 | ret = machine->ops->startup(substream); | |
db2a4165 | 151 | if (ret < 0) { |
cb666e5b LG |
152 | printk(KERN_ERR "asoc: %s startup failed\n", machine->name); |
153 | goto machine_err; | |
db2a4165 FM |
154 | } |
155 | } | |
156 | ||
db2a4165 FM |
157 | /* Check that the codec and cpu DAI's are compatible */ |
158 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
159 | runtime->hw.rate_min = | |
3ff3f64b MB |
160 | max(codec_dai->playback.rate_min, |
161 | cpu_dai->playback.rate_min); | |
db2a4165 | 162 | runtime->hw.rate_max = |
3ff3f64b MB |
163 | min(codec_dai->playback.rate_max, |
164 | cpu_dai->playback.rate_max); | |
db2a4165 | 165 | runtime->hw.channels_min = |
cb666e5b LG |
166 | max(codec_dai->playback.channels_min, |
167 | cpu_dai->playback.channels_min); | |
db2a4165 | 168 | runtime->hw.channels_max = |
cb666e5b LG |
169 | min(codec_dai->playback.channels_max, |
170 | cpu_dai->playback.channels_max); | |
171 | runtime->hw.formats = | |
172 | codec_dai->playback.formats & cpu_dai->playback.formats; | |
173 | runtime->hw.rates = | |
174 | codec_dai->playback.rates & cpu_dai->playback.rates; | |
db2a4165 FM |
175 | } else { |
176 | runtime->hw.rate_min = | |
3ff3f64b MB |
177 | max(codec_dai->capture.rate_min, |
178 | cpu_dai->capture.rate_min); | |
db2a4165 | 179 | runtime->hw.rate_max = |
3ff3f64b MB |
180 | min(codec_dai->capture.rate_max, |
181 | cpu_dai->capture.rate_max); | |
db2a4165 | 182 | runtime->hw.channels_min = |
cb666e5b LG |
183 | max(codec_dai->capture.channels_min, |
184 | cpu_dai->capture.channels_min); | |
db2a4165 | 185 | runtime->hw.channels_max = |
cb666e5b LG |
186 | min(codec_dai->capture.channels_max, |
187 | cpu_dai->capture.channels_max); | |
188 | runtime->hw.formats = | |
189 | codec_dai->capture.formats & cpu_dai->capture.formats; | |
190 | runtime->hw.rates = | |
191 | codec_dai->capture.rates & cpu_dai->capture.rates; | |
db2a4165 FM |
192 | } |
193 | ||
194 | snd_pcm_limit_hw_rates(runtime); | |
195 | if (!runtime->hw.rates) { | |
196 | printk(KERN_ERR "asoc: %s <-> %s No matching rates\n", | |
cb666e5b LG |
197 | codec_dai->name, cpu_dai->name); |
198 | goto machine_err; | |
db2a4165 FM |
199 | } |
200 | if (!runtime->hw.formats) { | |
201 | printk(KERN_ERR "asoc: %s <-> %s No matching formats\n", | |
cb666e5b LG |
202 | codec_dai->name, cpu_dai->name); |
203 | goto machine_err; | |
db2a4165 FM |
204 | } |
205 | if (!runtime->hw.channels_min || !runtime->hw.channels_max) { | |
206 | printk(KERN_ERR "asoc: %s <-> %s No matching channels\n", | |
cb666e5b LG |
207 | codec_dai->name, cpu_dai->name); |
208 | goto machine_err; | |
db2a4165 FM |
209 | } |
210 | ||
f24368c2 MB |
211 | pr_debug("asoc: %s <-> %s info:\n", codec_dai->name, cpu_dai->name); |
212 | pr_debug("asoc: rate mask 0x%x\n", runtime->hw.rates); | |
213 | pr_debug("asoc: min ch %d max ch %d\n", runtime->hw.channels_min, | |
214 | runtime->hw.channels_max); | |
215 | pr_debug("asoc: min rate %d max rate %d\n", runtime->hw.rate_min, | |
216 | runtime->hw.rate_max); | |
db2a4165 | 217 | |
db2a4165 | 218 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
cb666e5b | 219 | cpu_dai->playback.active = codec_dai->playback.active = 1; |
db2a4165 | 220 | else |
cb666e5b LG |
221 | cpu_dai->capture.active = codec_dai->capture.active = 1; |
222 | cpu_dai->active = codec_dai->active = 1; | |
223 | cpu_dai->runtime = runtime; | |
db2a4165 FM |
224 | socdev->codec->active++; |
225 | mutex_unlock(&pcm_mutex); | |
226 | return 0; | |
227 | ||
cb666e5b | 228 | machine_err: |
db2a4165 FM |
229 | if (machine->ops && machine->ops->shutdown) |
230 | machine->ops->shutdown(substream); | |
231 | ||
cb666e5b | 232 | codec_dai_err: |
db2a4165 FM |
233 | if (platform->pcm_ops->close) |
234 | platform->pcm_ops->close(substream); | |
235 | ||
236 | platform_err: | |
cb666e5b | 237 | if (cpu_dai->ops.shutdown) |
dee89c4d | 238 | cpu_dai->ops.shutdown(substream, cpu_dai); |
db2a4165 FM |
239 | out: |
240 | mutex_unlock(&pcm_mutex); | |
241 | return ret; | |
242 | } | |
243 | ||
244 | /* | |
3a4fa0a2 | 245 | * Power down the audio subsystem pmdown_time msecs after close is called. |
db2a4165 FM |
246 | * This is to ensure there are no pops or clicks in between any music tracks |
247 | * due to DAPM power cycling. | |
248 | */ | |
4484bb2e | 249 | static void close_delayed_work(struct work_struct *work) |
db2a4165 | 250 | { |
6308419a MB |
251 | struct snd_soc_card *card = container_of(work, struct snd_soc_card, |
252 | delayed_work.work); | |
253 | struct snd_soc_device *socdev = card->socdev; | |
db2a4165 | 254 | struct snd_soc_codec *codec = socdev->codec; |
3c4b266f | 255 | struct snd_soc_dai *codec_dai; |
db2a4165 FM |
256 | int i; |
257 | ||
258 | mutex_lock(&pcm_mutex); | |
3ff3f64b | 259 | for (i = 0; i < codec->num_dai; i++) { |
db2a4165 FM |
260 | codec_dai = &codec->dai[i]; |
261 | ||
f24368c2 MB |
262 | pr_debug("pop wq checking: %s status: %s waiting: %s\n", |
263 | codec_dai->playback.stream_name, | |
264 | codec_dai->playback.active ? "active" : "inactive", | |
265 | codec_dai->pop_wait ? "yes" : "no"); | |
db2a4165 FM |
266 | |
267 | /* are we waiting on this codec DAI stream */ | |
268 | if (codec_dai->pop_wait == 1) { | |
269 | ||
0be9898a | 270 | /* Reduce power if no longer active */ |
3c1c47e0 | 271 | if (codec->active == 0) { |
f24368c2 MB |
272 | pr_debug("pop wq D1 %s %s\n", codec->name, |
273 | codec_dai->playback.stream_name); | |
0be9898a MB |
274 | snd_soc_dapm_set_bias_level(socdev, |
275 | SND_SOC_BIAS_PREPARE); | |
3c1c47e0 LG |
276 | } |
277 | ||
db2a4165 | 278 | codec_dai->pop_wait = 0; |
0b4d221b LG |
279 | snd_soc_dapm_stream_event(codec, |
280 | codec_dai->playback.stream_name, | |
db2a4165 FM |
281 | SND_SOC_DAPM_STREAM_STOP); |
282 | ||
0be9898a | 283 | /* Fall into standby if no longer active */ |
db2a4165 | 284 | if (codec->active == 0) { |
f24368c2 MB |
285 | pr_debug("pop wq D3 %s %s\n", codec->name, |
286 | codec_dai->playback.stream_name); | |
0be9898a MB |
287 | snd_soc_dapm_set_bias_level(socdev, |
288 | SND_SOC_BIAS_STANDBY); | |
db2a4165 FM |
289 | } |
290 | } | |
291 | } | |
292 | mutex_unlock(&pcm_mutex); | |
293 | } | |
294 | ||
295 | /* | |
296 | * Called by ALSA when a PCM substream is closed. Private data can be | |
297 | * freed here. The cpu DAI, codec DAI, machine and platform are also | |
298 | * shutdown. | |
299 | */ | |
300 | static int soc_codec_close(struct snd_pcm_substream *substream) | |
301 | { | |
302 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
303 | struct snd_soc_device *socdev = rtd->socdev; | |
6308419a | 304 | struct snd_soc_card *card = socdev->card; |
cb666e5b | 305 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 | 306 | struct snd_soc_platform *platform = card->platform; |
3c4b266f LG |
307 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
308 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
309 | struct snd_soc_codec *codec = socdev->codec; |
310 | ||
311 | mutex_lock(&pcm_mutex); | |
312 | ||
313 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
cb666e5b | 314 | cpu_dai->playback.active = codec_dai->playback.active = 0; |
db2a4165 | 315 | else |
cb666e5b | 316 | cpu_dai->capture.active = codec_dai->capture.active = 0; |
db2a4165 | 317 | |
cb666e5b LG |
318 | if (codec_dai->playback.active == 0 && |
319 | codec_dai->capture.active == 0) { | |
320 | cpu_dai->active = codec_dai->active = 0; | |
db2a4165 FM |
321 | } |
322 | codec->active--; | |
323 | ||
6010b2da MB |
324 | /* Muting the DAC suppresses artifacts caused during digital |
325 | * shutdown, for example from stopping clocks. | |
326 | */ | |
327 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
328 | snd_soc_dai_digital_mute(codec_dai, 1); | |
329 | ||
cb666e5b | 330 | if (cpu_dai->ops.shutdown) |
dee89c4d | 331 | cpu_dai->ops.shutdown(substream, cpu_dai); |
db2a4165 | 332 | |
cb666e5b | 333 | if (codec_dai->ops.shutdown) |
dee89c4d | 334 | codec_dai->ops.shutdown(substream, codec_dai); |
db2a4165 FM |
335 | |
336 | if (machine->ops && machine->ops->shutdown) | |
337 | machine->ops->shutdown(substream); | |
338 | ||
339 | if (platform->pcm_ops->close) | |
340 | platform->pcm_ops->close(substream); | |
cb666e5b | 341 | cpu_dai->runtime = NULL; |
db2a4165 FM |
342 | |
343 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
344 | /* start delayed pop wq here for playback streams */ | |
cb666e5b | 345 | codec_dai->pop_wait = 1; |
6308419a | 346 | schedule_delayed_work(&card->delayed_work, |
db2a4165 FM |
347 | msecs_to_jiffies(pmdown_time)); |
348 | } else { | |
349 | /* capture streams can be powered down now */ | |
cb666e5b | 350 | snd_soc_dapm_stream_event(codec, |
0b4d221b LG |
351 | codec_dai->capture.stream_name, |
352 | SND_SOC_DAPM_STREAM_STOP); | |
db2a4165 | 353 | |
0b4d221b | 354 | if (codec->active == 0 && codec_dai->pop_wait == 0) |
0be9898a MB |
355 | snd_soc_dapm_set_bias_level(socdev, |
356 | SND_SOC_BIAS_STANDBY); | |
db2a4165 FM |
357 | } |
358 | ||
359 | mutex_unlock(&pcm_mutex); | |
360 | return 0; | |
361 | } | |
362 | ||
363 | /* | |
364 | * Called by ALSA when the PCM substream is prepared, can set format, sample | |
365 | * rate, etc. This function is non atomic and can be called multiple times, | |
366 | * it can refer to the runtime info. | |
367 | */ | |
368 | static int soc_pcm_prepare(struct snd_pcm_substream *substream) | |
369 | { | |
370 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
371 | struct snd_soc_device *socdev = rtd->socdev; | |
6308419a | 372 | struct snd_soc_card *card = socdev->card; |
cb666e5b | 373 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 | 374 | struct snd_soc_platform *platform = card->platform; |
3c4b266f LG |
375 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
376 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
377 | struct snd_soc_codec *codec = socdev->codec; |
378 | int ret = 0; | |
379 | ||
380 | mutex_lock(&pcm_mutex); | |
cb666e5b LG |
381 | |
382 | if (machine->ops && machine->ops->prepare) { | |
383 | ret = machine->ops->prepare(substream); | |
384 | if (ret < 0) { | |
385 | printk(KERN_ERR "asoc: machine prepare error\n"); | |
386 | goto out; | |
387 | } | |
388 | } | |
389 | ||
db2a4165 FM |
390 | if (platform->pcm_ops->prepare) { |
391 | ret = platform->pcm_ops->prepare(substream); | |
a71a468a LG |
392 | if (ret < 0) { |
393 | printk(KERN_ERR "asoc: platform prepare error\n"); | |
db2a4165 | 394 | goto out; |
a71a468a | 395 | } |
db2a4165 FM |
396 | } |
397 | ||
cb666e5b | 398 | if (codec_dai->ops.prepare) { |
dee89c4d | 399 | ret = codec_dai->ops.prepare(substream, codec_dai); |
a71a468a LG |
400 | if (ret < 0) { |
401 | printk(KERN_ERR "asoc: codec DAI prepare error\n"); | |
db2a4165 | 402 | goto out; |
a71a468a | 403 | } |
db2a4165 FM |
404 | } |
405 | ||
cb666e5b | 406 | if (cpu_dai->ops.prepare) { |
dee89c4d | 407 | ret = cpu_dai->ops.prepare(substream, cpu_dai); |
cb666e5b LG |
408 | if (ret < 0) { |
409 | printk(KERN_ERR "asoc: cpu DAI prepare error\n"); | |
410 | goto out; | |
411 | } | |
412 | } | |
db2a4165 | 413 | |
d45f6219 MB |
414 | /* cancel any delayed stream shutdown that is pending */ |
415 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
416 | codec_dai->pop_wait) { | |
417 | codec_dai->pop_wait = 0; | |
6308419a | 418 | cancel_delayed_work(&card->delayed_work); |
d45f6219 | 419 | } |
db2a4165 | 420 | |
d45f6219 MB |
421 | /* do we need to power up codec */ |
422 | if (codec->bias_level != SND_SOC_BIAS_ON) { | |
423 | snd_soc_dapm_set_bias_level(socdev, | |
424 | SND_SOC_BIAS_PREPARE); | |
db2a4165 | 425 | |
d45f6219 MB |
426 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
427 | snd_soc_dapm_stream_event(codec, | |
cb666e5b | 428 | codec_dai->playback.stream_name, |
db2a4165 | 429 | SND_SOC_DAPM_STREAM_START); |
d45f6219 MB |
430 | else |
431 | snd_soc_dapm_stream_event(codec, | |
cb666e5b | 432 | codec_dai->capture.stream_name, |
db2a4165 FM |
433 | SND_SOC_DAPM_STREAM_START); |
434 | ||
d45f6219 MB |
435 | snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_ON); |
436 | snd_soc_dai_digital_mute(codec_dai, 0); | |
db2a4165 | 437 | |
d45f6219 MB |
438 | } else { |
439 | /* codec already powered - power on widgets */ | |
440 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
441 | snd_soc_dapm_stream_event(codec, | |
cb666e5b | 442 | codec_dai->playback.stream_name, |
db2a4165 | 443 | SND_SOC_DAPM_STREAM_START); |
d45f6219 MB |
444 | else |
445 | snd_soc_dapm_stream_event(codec, | |
cb666e5b | 446 | codec_dai->capture.stream_name, |
db2a4165 | 447 | SND_SOC_DAPM_STREAM_START); |
8c6529db | 448 | |
d45f6219 | 449 | snd_soc_dai_digital_mute(codec_dai, 0); |
db2a4165 FM |
450 | } |
451 | ||
452 | out: | |
453 | mutex_unlock(&pcm_mutex); | |
454 | return ret; | |
455 | } | |
456 | ||
457 | /* | |
458 | * Called by ALSA when the hardware params are set by application. This | |
459 | * function can also be called multiple times and can allocate buffers | |
460 | * (using snd_pcm_lib_* ). It's non-atomic. | |
461 | */ | |
462 | static int soc_pcm_hw_params(struct snd_pcm_substream *substream, | |
463 | struct snd_pcm_hw_params *params) | |
464 | { | |
465 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
466 | struct snd_soc_device *socdev = rtd->socdev; | |
cb666e5b | 467 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 MB |
468 | struct snd_soc_card *card = socdev->card; |
469 | struct snd_soc_platform *platform = card->platform; | |
3c4b266f LG |
470 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
471 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
472 | int ret = 0; |
473 | ||
474 | mutex_lock(&pcm_mutex); | |
475 | ||
cb666e5b LG |
476 | if (machine->ops && machine->ops->hw_params) { |
477 | ret = machine->ops->hw_params(substream, params); | |
478 | if (ret < 0) { | |
479 | printk(KERN_ERR "asoc: machine hw_params failed\n"); | |
db2a4165 | 480 | goto out; |
cb666e5b | 481 | } |
db2a4165 FM |
482 | } |
483 | ||
cb666e5b | 484 | if (codec_dai->ops.hw_params) { |
dee89c4d | 485 | ret = codec_dai->ops.hw_params(substream, params, codec_dai); |
db2a4165 FM |
486 | if (ret < 0) { |
487 | printk(KERN_ERR "asoc: can't set codec %s hw params\n", | |
cb666e5b LG |
488 | codec_dai->name); |
489 | goto codec_err; | |
db2a4165 FM |
490 | } |
491 | } | |
492 | ||
cb666e5b | 493 | if (cpu_dai->ops.hw_params) { |
dee89c4d | 494 | ret = cpu_dai->ops.hw_params(substream, params, cpu_dai); |
db2a4165 | 495 | if (ret < 0) { |
3ff3f64b | 496 | printk(KERN_ERR "asoc: interface %s hw params failed\n", |
cb666e5b | 497 | cpu_dai->name); |
db2a4165 FM |
498 | goto interface_err; |
499 | } | |
500 | } | |
501 | ||
502 | if (platform->pcm_ops->hw_params) { | |
503 | ret = platform->pcm_ops->hw_params(substream, params); | |
504 | if (ret < 0) { | |
3ff3f64b | 505 | printk(KERN_ERR "asoc: platform %s hw params failed\n", |
db2a4165 FM |
506 | platform->name); |
507 | goto platform_err; | |
508 | } | |
509 | } | |
510 | ||
db2a4165 FM |
511 | out: |
512 | mutex_unlock(&pcm_mutex); | |
513 | return ret; | |
514 | ||
db2a4165 | 515 | platform_err: |
cb666e5b | 516 | if (cpu_dai->ops.hw_free) |
dee89c4d | 517 | cpu_dai->ops.hw_free(substream, cpu_dai); |
db2a4165 FM |
518 | |
519 | interface_err: | |
cb666e5b | 520 | if (codec_dai->ops.hw_free) |
dee89c4d | 521 | codec_dai->ops.hw_free(substream, codec_dai); |
cb666e5b LG |
522 | |
523 | codec_err: | |
3ff3f64b | 524 | if (machine->ops && machine->ops->hw_free) |
cb666e5b | 525 | machine->ops->hw_free(substream); |
db2a4165 FM |
526 | |
527 | mutex_unlock(&pcm_mutex); | |
528 | return ret; | |
529 | } | |
530 | ||
531 | /* | |
532 | * Free's resources allocated by hw_params, can be called multiple times | |
533 | */ | |
534 | static int soc_pcm_hw_free(struct snd_pcm_substream *substream) | |
535 | { | |
536 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
537 | struct snd_soc_device *socdev = rtd->socdev; | |
cb666e5b | 538 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 MB |
539 | struct snd_soc_card *card = socdev->card; |
540 | struct snd_soc_platform *platform = card->platform; | |
3c4b266f LG |
541 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
542 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 | 543 | struct snd_soc_codec *codec = socdev->codec; |
db2a4165 FM |
544 | |
545 | mutex_lock(&pcm_mutex); | |
546 | ||
547 | /* apply codec digital mute */ | |
8c6529db LG |
548 | if (!codec->active) |
549 | snd_soc_dai_digital_mute(codec_dai, 1); | |
db2a4165 FM |
550 | |
551 | /* free any machine hw params */ | |
552 | if (machine->ops && machine->ops->hw_free) | |
553 | machine->ops->hw_free(substream); | |
554 | ||
555 | /* free any DMA resources */ | |
556 | if (platform->pcm_ops->hw_free) | |
557 | platform->pcm_ops->hw_free(substream); | |
558 | ||
559 | /* now free hw params for the DAI's */ | |
cb666e5b | 560 | if (codec_dai->ops.hw_free) |
dee89c4d | 561 | codec_dai->ops.hw_free(substream, codec_dai); |
db2a4165 | 562 | |
cb666e5b | 563 | if (cpu_dai->ops.hw_free) |
dee89c4d | 564 | cpu_dai->ops.hw_free(substream, cpu_dai); |
db2a4165 FM |
565 | |
566 | mutex_unlock(&pcm_mutex); | |
567 | return 0; | |
568 | } | |
569 | ||
570 | static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd) | |
571 | { | |
572 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
573 | struct snd_soc_device *socdev = rtd->socdev; | |
87689d56 | 574 | struct snd_soc_card *card= socdev->card; |
cb666e5b | 575 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 | 576 | struct snd_soc_platform *platform = card->platform; |
3c4b266f LG |
577 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
578 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
579 | int ret; |
580 | ||
cb666e5b | 581 | if (codec_dai->ops.trigger) { |
dee89c4d | 582 | ret = codec_dai->ops.trigger(substream, cmd, codec_dai); |
db2a4165 FM |
583 | if (ret < 0) |
584 | return ret; | |
585 | } | |
586 | ||
587 | if (platform->pcm_ops->trigger) { | |
588 | ret = platform->pcm_ops->trigger(substream, cmd); | |
589 | if (ret < 0) | |
590 | return ret; | |
591 | } | |
592 | ||
cb666e5b | 593 | if (cpu_dai->ops.trigger) { |
dee89c4d | 594 | ret = cpu_dai->ops.trigger(substream, cmd, cpu_dai); |
db2a4165 FM |
595 | if (ret < 0) |
596 | return ret; | |
597 | } | |
598 | return 0; | |
599 | } | |
600 | ||
601 | /* ASoC PCM operations */ | |
602 | static struct snd_pcm_ops soc_pcm_ops = { | |
603 | .open = soc_pcm_open, | |
604 | .close = soc_codec_close, | |
605 | .hw_params = soc_pcm_hw_params, | |
606 | .hw_free = soc_pcm_hw_free, | |
607 | .prepare = soc_pcm_prepare, | |
608 | .trigger = soc_pcm_trigger, | |
609 | }; | |
610 | ||
611 | #ifdef CONFIG_PM | |
612 | /* powers down audio subsystem for suspend */ | |
613 | static int soc_suspend(struct platform_device *pdev, pm_message_t state) | |
614 | { | |
3ff3f64b | 615 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
87506549 | 616 | struct snd_soc_card *card = socdev->card; |
87689d56 | 617 | struct snd_soc_platform *platform = card->platform; |
3ff3f64b | 618 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; |
db2a4165 FM |
619 | struct snd_soc_codec *codec = socdev->codec; |
620 | int i; | |
621 | ||
6ed25978 AG |
622 | /* Due to the resume being scheduled into a workqueue we could |
623 | * suspend before that's finished - wait for it to complete. | |
624 | */ | |
625 | snd_power_lock(codec->card); | |
626 | snd_power_wait(codec->card, SNDRV_CTL_POWER_D0); | |
627 | snd_power_unlock(codec->card); | |
628 | ||
629 | /* we're going to block userspace touching us until resume completes */ | |
630 | snd_power_change_state(codec->card, SNDRV_CTL_POWER_D3hot); | |
631 | ||
db2a4165 | 632 | /* mute any active DAC's */ |
dee89c4d MB |
633 | for (i = 0; i < card->num_links; i++) { |
634 | struct snd_soc_dai *dai = card->dai_link[i].codec_dai; | |
635 | if (dai->ops.digital_mute && dai->playback.active) | |
636 | dai->ops.digital_mute(dai, 1); | |
db2a4165 FM |
637 | } |
638 | ||
4ccab3e7 | 639 | /* suspend all pcms */ |
87506549 MB |
640 | for (i = 0; i < card->num_links; i++) |
641 | snd_pcm_suspend_all(card->dai_link[i].pcm); | |
4ccab3e7 | 642 | |
87506549 MB |
643 | if (card->suspend_pre) |
644 | card->suspend_pre(pdev, state); | |
db2a4165 | 645 | |
87506549 MB |
646 | for (i = 0; i < card->num_links; i++) { |
647 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
3ba9e10a | 648 | if (cpu_dai->suspend && !cpu_dai->ac97_control) |
db2a4165 FM |
649 | cpu_dai->suspend(pdev, cpu_dai); |
650 | if (platform->suspend) | |
651 | platform->suspend(pdev, cpu_dai); | |
652 | } | |
653 | ||
654 | /* close any waiting streams and save state */ | |
6308419a | 655 | run_delayed_work(&card->delayed_work); |
0be9898a | 656 | codec->suspend_bias_level = codec->bias_level; |
db2a4165 | 657 | |
3ff3f64b | 658 | for (i = 0; i < codec->num_dai; i++) { |
db2a4165 FM |
659 | char *stream = codec->dai[i].playback.stream_name; |
660 | if (stream != NULL) | |
661 | snd_soc_dapm_stream_event(codec, stream, | |
662 | SND_SOC_DAPM_STREAM_SUSPEND); | |
663 | stream = codec->dai[i].capture.stream_name; | |
664 | if (stream != NULL) | |
665 | snd_soc_dapm_stream_event(codec, stream, | |
666 | SND_SOC_DAPM_STREAM_SUSPEND); | |
667 | } | |
668 | ||
669 | if (codec_dev->suspend) | |
670 | codec_dev->suspend(pdev, state); | |
671 | ||
87506549 MB |
672 | for (i = 0; i < card->num_links; i++) { |
673 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
3ba9e10a | 674 | if (cpu_dai->suspend && cpu_dai->ac97_control) |
db2a4165 FM |
675 | cpu_dai->suspend(pdev, cpu_dai); |
676 | } | |
677 | ||
87506549 MB |
678 | if (card->suspend_post) |
679 | card->suspend_post(pdev, state); | |
db2a4165 FM |
680 | |
681 | return 0; | |
682 | } | |
683 | ||
6ed25978 AG |
684 | /* deferred resume work, so resume can complete before we finished |
685 | * setting our codec back up, which can be very slow on I2C | |
686 | */ | |
687 | static void soc_resume_deferred(struct work_struct *work) | |
db2a4165 | 688 | { |
6308419a MB |
689 | struct snd_soc_card *card = container_of(work, |
690 | struct snd_soc_card, | |
691 | deferred_resume_work); | |
692 | struct snd_soc_device *socdev = card->socdev; | |
87689d56 | 693 | struct snd_soc_platform *platform = card->platform; |
3ff3f64b | 694 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; |
db2a4165 | 695 | struct snd_soc_codec *codec = socdev->codec; |
6ed25978 | 696 | struct platform_device *pdev = to_platform_device(socdev->dev); |
db2a4165 FM |
697 | int i; |
698 | ||
6ed25978 AG |
699 | /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time, |
700 | * so userspace apps are blocked from touching us | |
701 | */ | |
702 | ||
fde22f27 | 703 | dev_dbg(socdev->dev, "starting resume work\n"); |
6ed25978 | 704 | |
87506549 MB |
705 | if (card->resume_pre) |
706 | card->resume_pre(pdev); | |
db2a4165 | 707 | |
87506549 MB |
708 | for (i = 0; i < card->num_links; i++) { |
709 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
3ba9e10a | 710 | if (cpu_dai->resume && cpu_dai->ac97_control) |
db2a4165 FM |
711 | cpu_dai->resume(pdev, cpu_dai); |
712 | } | |
713 | ||
714 | if (codec_dev->resume) | |
715 | codec_dev->resume(pdev); | |
716 | ||
3ff3f64b MB |
717 | for (i = 0; i < codec->num_dai; i++) { |
718 | char *stream = codec->dai[i].playback.stream_name; | |
db2a4165 FM |
719 | if (stream != NULL) |
720 | snd_soc_dapm_stream_event(codec, stream, | |
721 | SND_SOC_DAPM_STREAM_RESUME); | |
722 | stream = codec->dai[i].capture.stream_name; | |
723 | if (stream != NULL) | |
724 | snd_soc_dapm_stream_event(codec, stream, | |
725 | SND_SOC_DAPM_STREAM_RESUME); | |
726 | } | |
727 | ||
3ff3f64b | 728 | /* unmute any active DACs */ |
dee89c4d MB |
729 | for (i = 0; i < card->num_links; i++) { |
730 | struct snd_soc_dai *dai = card->dai_link[i].codec_dai; | |
731 | if (dai->ops.digital_mute && dai->playback.active) | |
732 | dai->ops.digital_mute(dai, 0); | |
db2a4165 FM |
733 | } |
734 | ||
87506549 MB |
735 | for (i = 0; i < card->num_links; i++) { |
736 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
3ba9e10a | 737 | if (cpu_dai->resume && !cpu_dai->ac97_control) |
db2a4165 FM |
738 | cpu_dai->resume(pdev, cpu_dai); |
739 | if (platform->resume) | |
740 | platform->resume(pdev, cpu_dai); | |
741 | } | |
742 | ||
87506549 MB |
743 | if (card->resume_post) |
744 | card->resume_post(pdev); | |
db2a4165 | 745 | |
fde22f27 | 746 | dev_dbg(socdev->dev, "resume work completed\n"); |
6ed25978 AG |
747 | |
748 | /* userspace can access us now we are back as we were before */ | |
749 | snd_power_change_state(codec->card, SNDRV_CTL_POWER_D0); | |
750 | } | |
751 | ||
752 | /* powers up audio subsystem after a suspend */ | |
753 | static int soc_resume(struct platform_device *pdev) | |
754 | { | |
755 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
6308419a | 756 | struct snd_soc_card *card = socdev->card; |
6ed25978 | 757 | |
fde22f27 | 758 | dev_dbg(socdev->dev, "scheduling resume work\n"); |
6ed25978 | 759 | |
6308419a | 760 | if (!schedule_work(&card->deferred_resume_work)) |
fde22f27 | 761 | dev_err(socdev->dev, "resume work item may be lost\n"); |
6ed25978 | 762 | |
db2a4165 FM |
763 | return 0; |
764 | } | |
765 | ||
766 | #else | |
767 | #define soc_suspend NULL | |
768 | #define soc_resume NULL | |
769 | #endif | |
770 | ||
771 | /* probes a new socdev */ | |
772 | static int soc_probe(struct platform_device *pdev) | |
773 | { | |
774 | int ret = 0, i; | |
775 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
87506549 | 776 | struct snd_soc_card *card = socdev->card; |
87689d56 | 777 | struct snd_soc_platform *platform = card->platform; |
db2a4165 FM |
778 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; |
779 | ||
6308419a MB |
780 | /* Bodge while we push things out of socdev */ |
781 | card->socdev = socdev; | |
782 | ||
87506549 MB |
783 | if (card->probe) { |
784 | ret = card->probe(pdev); | |
3ff3f64b | 785 | if (ret < 0) |
db2a4165 FM |
786 | return ret; |
787 | } | |
788 | ||
87506549 MB |
789 | for (i = 0; i < card->num_links; i++) { |
790 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
db2a4165 | 791 | if (cpu_dai->probe) { |
bdb92876 | 792 | ret = cpu_dai->probe(pdev, cpu_dai); |
3ff3f64b | 793 | if (ret < 0) |
db2a4165 FM |
794 | goto cpu_dai_err; |
795 | } | |
796 | } | |
797 | ||
798 | if (codec_dev->probe) { | |
799 | ret = codec_dev->probe(pdev); | |
3ff3f64b | 800 | if (ret < 0) |
db2a4165 FM |
801 | goto cpu_dai_err; |
802 | } | |
803 | ||
804 | if (platform->probe) { | |
805 | ret = platform->probe(pdev); | |
3ff3f64b | 806 | if (ret < 0) |
db2a4165 FM |
807 | goto platform_err; |
808 | } | |
809 | ||
810 | /* DAPM stream work */ | |
6308419a | 811 | INIT_DELAYED_WORK(&card->delayed_work, close_delayed_work); |
1301a964 | 812 | #ifdef CONFIG_PM |
6ed25978 | 813 | /* deferred resume work */ |
6308419a | 814 | INIT_WORK(&card->deferred_resume_work, soc_resume_deferred); |
1301a964 | 815 | #endif |
6ed25978 | 816 | |
db2a4165 FM |
817 | return 0; |
818 | ||
db2a4165 FM |
819 | platform_err: |
820 | if (codec_dev->remove) | |
821 | codec_dev->remove(pdev); | |
822 | ||
823 | cpu_dai_err: | |
18b9b3d9 | 824 | for (i--; i >= 0; i--) { |
87506549 | 825 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; |
db2a4165 | 826 | if (cpu_dai->remove) |
bdb92876 | 827 | cpu_dai->remove(pdev, cpu_dai); |
db2a4165 FM |
828 | } |
829 | ||
87506549 MB |
830 | if (card->remove) |
831 | card->remove(pdev); | |
db2a4165 FM |
832 | |
833 | return ret; | |
834 | } | |
835 | ||
836 | /* removes a socdev */ | |
837 | static int soc_remove(struct platform_device *pdev) | |
838 | { | |
839 | int i; | |
840 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
87506549 | 841 | struct snd_soc_card *card = socdev->card; |
87689d56 | 842 | struct snd_soc_platform *platform = card->platform; |
db2a4165 FM |
843 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; |
844 | ||
6308419a | 845 | run_delayed_work(&card->delayed_work); |
965ac42c | 846 | |
db2a4165 FM |
847 | if (platform->remove) |
848 | platform->remove(pdev); | |
849 | ||
850 | if (codec_dev->remove) | |
851 | codec_dev->remove(pdev); | |
852 | ||
87506549 MB |
853 | for (i = 0; i < card->num_links; i++) { |
854 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
db2a4165 | 855 | if (cpu_dai->remove) |
bdb92876 | 856 | cpu_dai->remove(pdev, cpu_dai); |
db2a4165 FM |
857 | } |
858 | ||
87506549 MB |
859 | if (card->remove) |
860 | card->remove(pdev); | |
db2a4165 FM |
861 | |
862 | return 0; | |
863 | } | |
864 | ||
865 | /* ASoC platform driver */ | |
866 | static struct platform_driver soc_driver = { | |
867 | .driver = { | |
868 | .name = "soc-audio", | |
8b45a209 | 869 | .owner = THIS_MODULE, |
db2a4165 FM |
870 | }, |
871 | .probe = soc_probe, | |
872 | .remove = soc_remove, | |
873 | .suspend = soc_suspend, | |
874 | .resume = soc_resume, | |
875 | }; | |
876 | ||
877 | /* create a new pcm */ | |
878 | static int soc_new_pcm(struct snd_soc_device *socdev, | |
879 | struct snd_soc_dai_link *dai_link, int num) | |
880 | { | |
881 | struct snd_soc_codec *codec = socdev->codec; | |
87689d56 MB |
882 | struct snd_soc_card *card = socdev->card; |
883 | struct snd_soc_platform *platform = card->platform; | |
3c4b266f LG |
884 | struct snd_soc_dai *codec_dai = dai_link->codec_dai; |
885 | struct snd_soc_dai *cpu_dai = dai_link->cpu_dai; | |
db2a4165 FM |
886 | struct snd_soc_pcm_runtime *rtd; |
887 | struct snd_pcm *pcm; | |
888 | char new_name[64]; | |
889 | int ret = 0, playback = 0, capture = 0; | |
890 | ||
891 | rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime), GFP_KERNEL); | |
892 | if (rtd == NULL) | |
893 | return -ENOMEM; | |
cb666e5b LG |
894 | |
895 | rtd->dai = dai_link; | |
db2a4165 | 896 | rtd->socdev = socdev; |
cb666e5b | 897 | codec_dai->codec = socdev->codec; |
db2a4165 FM |
898 | |
899 | /* check client and interface hw capabilities */ | |
3ba9e10a MB |
900 | sprintf(new_name, "%s %s-%d", dai_link->stream_name, codec_dai->name, |
901 | num); | |
db2a4165 FM |
902 | |
903 | if (codec_dai->playback.channels_min) | |
904 | playback = 1; | |
905 | if (codec_dai->capture.channels_min) | |
906 | capture = 1; | |
907 | ||
908 | ret = snd_pcm_new(codec->card, new_name, codec->pcm_devs++, playback, | |
909 | capture, &pcm); | |
910 | if (ret < 0) { | |
3ff3f64b MB |
911 | printk(KERN_ERR "asoc: can't create pcm for codec %s\n", |
912 | codec->name); | |
db2a4165 FM |
913 | kfree(rtd); |
914 | return ret; | |
915 | } | |
916 | ||
4ccab3e7 | 917 | dai_link->pcm = pcm; |
db2a4165 | 918 | pcm->private_data = rtd; |
87689d56 MB |
919 | soc_pcm_ops.mmap = platform->pcm_ops->mmap; |
920 | soc_pcm_ops.pointer = platform->pcm_ops->pointer; | |
921 | soc_pcm_ops.ioctl = platform->pcm_ops->ioctl; | |
922 | soc_pcm_ops.copy = platform->pcm_ops->copy; | |
923 | soc_pcm_ops.silence = platform->pcm_ops->silence; | |
924 | soc_pcm_ops.ack = platform->pcm_ops->ack; | |
925 | soc_pcm_ops.page = platform->pcm_ops->page; | |
db2a4165 FM |
926 | |
927 | if (playback) | |
928 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &soc_pcm_ops); | |
929 | ||
930 | if (capture) | |
931 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &soc_pcm_ops); | |
932 | ||
87689d56 | 933 | ret = platform->pcm_new(codec->card, codec_dai, pcm); |
db2a4165 FM |
934 | if (ret < 0) { |
935 | printk(KERN_ERR "asoc: platform pcm constructor failed\n"); | |
936 | kfree(rtd); | |
937 | return ret; | |
938 | } | |
939 | ||
87689d56 | 940 | pcm->private_free = platform->pcm_free; |
db2a4165 FM |
941 | printk(KERN_INFO "asoc: %s <-> %s mapping ok\n", codec_dai->name, |
942 | cpu_dai->name); | |
943 | return ret; | |
944 | } | |
945 | ||
946 | /* codec register dump */ | |
12ef193d | 947 | static ssize_t soc_codec_reg_show(struct snd_soc_device *devdata, char *buf) |
db2a4165 | 948 | { |
db2a4165 FM |
949 | struct snd_soc_codec *codec = devdata->codec; |
950 | int i, step = 1, count = 0; | |
951 | ||
952 | if (!codec->reg_cache_size) | |
953 | return 0; | |
954 | ||
955 | if (codec->reg_cache_step) | |
956 | step = codec->reg_cache_step; | |
957 | ||
958 | count += sprintf(buf, "%s registers\n", codec->name); | |
58cd33c0 MB |
959 | for (i = 0; i < codec->reg_cache_size; i += step) { |
960 | count += sprintf(buf + count, "%2x: ", i); | |
961 | if (count >= PAGE_SIZE - 1) | |
962 | break; | |
963 | ||
964 | if (codec->display_register) | |
965 | count += codec->display_register(codec, buf + count, | |
966 | PAGE_SIZE - count, i); | |
967 | else | |
968 | count += snprintf(buf + count, PAGE_SIZE - count, | |
969 | "%4x", codec->read(codec, i)); | |
970 | ||
971 | if (count >= PAGE_SIZE - 1) | |
972 | break; | |
973 | ||
974 | count += snprintf(buf + count, PAGE_SIZE - count, "\n"); | |
975 | if (count >= PAGE_SIZE - 1) | |
976 | break; | |
977 | } | |
978 | ||
979 | /* Truncate count; min() would cause a warning */ | |
980 | if (count >= PAGE_SIZE) | |
981 | count = PAGE_SIZE - 1; | |
db2a4165 FM |
982 | |
983 | return count; | |
984 | } | |
12ef193d TK |
985 | static ssize_t codec_reg_show(struct device *dev, |
986 | struct device_attribute *attr, char *buf) | |
987 | { | |
988 | struct snd_soc_device *devdata = dev_get_drvdata(dev); | |
989 | return soc_codec_reg_show(devdata, buf); | |
990 | } | |
991 | ||
db2a4165 FM |
992 | static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL); |
993 | ||
12ef193d TK |
994 | #ifdef CONFIG_DEBUG_FS |
995 | static int codec_reg_open_file(struct inode *inode, struct file *file) | |
996 | { | |
997 | file->private_data = inode->i_private; | |
998 | return 0; | |
999 | } | |
1000 | ||
1001 | static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf, | |
1002 | size_t count, loff_t *ppos) | |
1003 | { | |
1004 | ssize_t ret; | |
1005 | struct snd_soc_device *devdata = file->private_data; | |
1006 | char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL); | |
1007 | if (!buf) | |
1008 | return -ENOMEM; | |
1009 | ret = soc_codec_reg_show(devdata, buf); | |
1010 | if (ret >= 0) | |
1011 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); | |
1012 | kfree(buf); | |
1013 | return ret; | |
1014 | } | |
1015 | ||
1016 | static ssize_t codec_reg_write_file(struct file *file, | |
1017 | const char __user *user_buf, size_t count, loff_t *ppos) | |
1018 | { | |
1019 | char buf[32]; | |
1020 | int buf_size; | |
1021 | char *start = buf; | |
1022 | unsigned long reg, value; | |
1023 | int step = 1; | |
1024 | struct snd_soc_device *devdata = file->private_data; | |
1025 | struct snd_soc_codec *codec = devdata->codec; | |
1026 | ||
1027 | buf_size = min(count, (sizeof(buf)-1)); | |
1028 | if (copy_from_user(buf, user_buf, buf_size)) | |
1029 | return -EFAULT; | |
1030 | buf[buf_size] = 0; | |
1031 | ||
1032 | if (codec->reg_cache_step) | |
1033 | step = codec->reg_cache_step; | |
1034 | ||
1035 | while (*start == ' ') | |
1036 | start++; | |
1037 | reg = simple_strtoul(start, &start, 16); | |
1038 | if ((reg >= codec->reg_cache_size) || (reg % step)) | |
1039 | return -EINVAL; | |
1040 | while (*start == ' ') | |
1041 | start++; | |
1042 | if (strict_strtoul(start, 16, &value)) | |
1043 | return -EINVAL; | |
1044 | codec->write(codec, reg, value); | |
1045 | return buf_size; | |
1046 | } | |
1047 | ||
1048 | static const struct file_operations codec_reg_fops = { | |
1049 | .open = codec_reg_open_file, | |
1050 | .read = codec_reg_read_file, | |
1051 | .write = codec_reg_write_file, | |
1052 | }; | |
1053 | ||
1054 | static void soc_init_debugfs(struct snd_soc_device *socdev) | |
1055 | { | |
1056 | struct dentry *root, *file; | |
1057 | struct snd_soc_codec *codec = socdev->codec; | |
1058 | root = debugfs_create_dir(dev_name(socdev->dev), NULL); | |
1059 | if (IS_ERR(root) || !root) | |
1060 | goto exit1; | |
1061 | ||
1062 | file = debugfs_create_file("codec_reg", 0644, | |
1063 | root, socdev, &codec_reg_fops); | |
1064 | if (!file) | |
1065 | goto exit2; | |
1066 | ||
1067 | file = debugfs_create_u32("dapm_pop_time", 0744, | |
1068 | root, &codec->pop_time); | |
1069 | if (!file) | |
1070 | goto exit2; | |
1071 | socdev->debugfs_root = root; | |
1072 | return; | |
1073 | exit2: | |
1074 | debugfs_remove_recursive(root); | |
1075 | exit1: | |
1076 | dev_err(socdev->dev, "debugfs is not available\n"); | |
1077 | } | |
1078 | ||
1079 | static void soc_cleanup_debugfs(struct snd_soc_device *socdev) | |
1080 | { | |
1081 | debugfs_remove_recursive(socdev->debugfs_root); | |
1082 | socdev->debugfs_root = NULL; | |
1083 | } | |
1084 | ||
1085 | #else | |
1086 | ||
1087 | static inline void soc_init_debugfs(struct snd_soc_device *socdev) | |
1088 | { | |
1089 | } | |
1090 | ||
1091 | static inline void soc_cleanup_debugfs(struct snd_soc_device *socdev) | |
1092 | { | |
1093 | } | |
1094 | #endif | |
1095 | ||
db2a4165 FM |
1096 | /** |
1097 | * snd_soc_new_ac97_codec - initailise AC97 device | |
1098 | * @codec: audio codec | |
1099 | * @ops: AC97 bus operations | |
1100 | * @num: AC97 codec number | |
1101 | * | |
1102 | * Initialises AC97 codec resources for use by ad-hoc devices only. | |
1103 | */ | |
1104 | int snd_soc_new_ac97_codec(struct snd_soc_codec *codec, | |
1105 | struct snd_ac97_bus_ops *ops, int num) | |
1106 | { | |
1107 | mutex_lock(&codec->mutex); | |
1108 | ||
1109 | codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL); | |
1110 | if (codec->ac97 == NULL) { | |
1111 | mutex_unlock(&codec->mutex); | |
1112 | return -ENOMEM; | |
1113 | } | |
1114 | ||
1115 | codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL); | |
1116 | if (codec->ac97->bus == NULL) { | |
1117 | kfree(codec->ac97); | |
1118 | codec->ac97 = NULL; | |
1119 | mutex_unlock(&codec->mutex); | |
1120 | return -ENOMEM; | |
1121 | } | |
1122 | ||
1123 | codec->ac97->bus->ops = ops; | |
1124 | codec->ac97->num = num; | |
1125 | mutex_unlock(&codec->mutex); | |
1126 | return 0; | |
1127 | } | |
1128 | EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec); | |
1129 | ||
1130 | /** | |
1131 | * snd_soc_free_ac97_codec - free AC97 codec device | |
1132 | * @codec: audio codec | |
1133 | * | |
1134 | * Frees AC97 codec device resources. | |
1135 | */ | |
1136 | void snd_soc_free_ac97_codec(struct snd_soc_codec *codec) | |
1137 | { | |
1138 | mutex_lock(&codec->mutex); | |
1139 | kfree(codec->ac97->bus); | |
1140 | kfree(codec->ac97); | |
1141 | codec->ac97 = NULL; | |
1142 | mutex_unlock(&codec->mutex); | |
1143 | } | |
1144 | EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec); | |
1145 | ||
1146 | /** | |
1147 | * snd_soc_update_bits - update codec register bits | |
1148 | * @codec: audio codec | |
1149 | * @reg: codec register | |
1150 | * @mask: register mask | |
1151 | * @value: new value | |
1152 | * | |
1153 | * Writes new register value. | |
1154 | * | |
1155 | * Returns 1 for change else 0. | |
1156 | */ | |
1157 | int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg, | |
1158 | unsigned short mask, unsigned short value) | |
1159 | { | |
1160 | int change; | |
1161 | unsigned short old, new; | |
1162 | ||
1163 | mutex_lock(&io_mutex); | |
1164 | old = snd_soc_read(codec, reg); | |
1165 | new = (old & ~mask) | value; | |
1166 | change = old != new; | |
1167 | if (change) | |
1168 | snd_soc_write(codec, reg, new); | |
1169 | ||
1170 | mutex_unlock(&io_mutex); | |
1171 | return change; | |
1172 | } | |
1173 | EXPORT_SYMBOL_GPL(snd_soc_update_bits); | |
1174 | ||
1175 | /** | |
1176 | * snd_soc_test_bits - test register for change | |
1177 | * @codec: audio codec | |
1178 | * @reg: codec register | |
1179 | * @mask: register mask | |
1180 | * @value: new value | |
1181 | * | |
1182 | * Tests a register with a new value and checks if the new value is | |
1183 | * different from the old value. | |
1184 | * | |
1185 | * Returns 1 for change else 0. | |
1186 | */ | |
1187 | int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg, | |
1188 | unsigned short mask, unsigned short value) | |
1189 | { | |
1190 | int change; | |
1191 | unsigned short old, new; | |
1192 | ||
1193 | mutex_lock(&io_mutex); | |
1194 | old = snd_soc_read(codec, reg); | |
1195 | new = (old & ~mask) | value; | |
1196 | change = old != new; | |
1197 | mutex_unlock(&io_mutex); | |
1198 | ||
1199 | return change; | |
1200 | } | |
1201 | EXPORT_SYMBOL_GPL(snd_soc_test_bits); | |
1202 | ||
db2a4165 FM |
1203 | /** |
1204 | * snd_soc_new_pcms - create new sound card and pcms | |
1205 | * @socdev: the SoC audio device | |
1206 | * | |
1207 | * Create a new sound card based upon the codec and interface pcms. | |
1208 | * | |
1209 | * Returns 0 for success, else error. | |
1210 | */ | |
bc7320c5 | 1211 | int snd_soc_new_pcms(struct snd_soc_device *socdev, int idx, const char *xid) |
db2a4165 FM |
1212 | { |
1213 | struct snd_soc_codec *codec = socdev->codec; | |
87506549 | 1214 | struct snd_soc_card *card = socdev->card; |
db2a4165 FM |
1215 | int ret = 0, i; |
1216 | ||
1217 | mutex_lock(&codec->mutex); | |
1218 | ||
1219 | /* register a sound card */ | |
1220 | codec->card = snd_card_new(idx, xid, codec->owner, 0); | |
1221 | if (!codec->card) { | |
1222 | printk(KERN_ERR "asoc: can't create sound card for codec %s\n", | |
1223 | codec->name); | |
1224 | mutex_unlock(&codec->mutex); | |
1225 | return -ENODEV; | |
1226 | } | |
1227 | ||
1228 | codec->card->dev = socdev->dev; | |
1229 | codec->card->private_data = codec; | |
1230 | strncpy(codec->card->driver, codec->name, sizeof(codec->card->driver)); | |
1231 | ||
1232 | /* create the pcms */ | |
87506549 MB |
1233 | for (i = 0; i < card->num_links; i++) { |
1234 | ret = soc_new_pcm(socdev, &card->dai_link[i], i); | |
db2a4165 FM |
1235 | if (ret < 0) { |
1236 | printk(KERN_ERR "asoc: can't create pcm %s\n", | |
87506549 | 1237 | card->dai_link[i].stream_name); |
db2a4165 FM |
1238 | mutex_unlock(&codec->mutex); |
1239 | return ret; | |
1240 | } | |
1241 | } | |
1242 | ||
1243 | mutex_unlock(&codec->mutex); | |
1244 | return ret; | |
1245 | } | |
1246 | EXPORT_SYMBOL_GPL(snd_soc_new_pcms); | |
1247 | ||
1248 | /** | |
968a6025 | 1249 | * snd_soc_init_card - register sound card |
db2a4165 FM |
1250 | * @socdev: the SoC audio device |
1251 | * | |
1252 | * Register a SoC sound card. Also registers an AC97 device if the | |
1253 | * codec is AC97 for ad hoc devices. | |
1254 | * | |
1255 | * Returns 0 for success, else error. | |
1256 | */ | |
968a6025 | 1257 | int snd_soc_init_card(struct snd_soc_device *socdev) |
db2a4165 FM |
1258 | { |
1259 | struct snd_soc_codec *codec = socdev->codec; | |
87506549 | 1260 | struct snd_soc_card *card = socdev->card; |
12e74f7d | 1261 | int ret = 0, i, ac97 = 0, err = 0; |
db2a4165 | 1262 | |
87506549 MB |
1263 | for (i = 0; i < card->num_links; i++) { |
1264 | if (card->dai_link[i].init) { | |
1265 | err = card->dai_link[i].init(codec); | |
12e74f7d LG |
1266 | if (err < 0) { |
1267 | printk(KERN_ERR "asoc: failed to init %s\n", | |
87506549 | 1268 | card->dai_link[i].stream_name); |
12e74f7d LG |
1269 | continue; |
1270 | } | |
1271 | } | |
3ba9e10a | 1272 | if (card->dai_link[i].codec_dai->ac97_control) |
db2a4165 FM |
1273 | ac97 = 1; |
1274 | } | |
1275 | snprintf(codec->card->shortname, sizeof(codec->card->shortname), | |
87506549 | 1276 | "%s", card->name); |
db2a4165 | 1277 | snprintf(codec->card->longname, sizeof(codec->card->longname), |
87506549 | 1278 | "%s (%s)", card->name, codec->name); |
db2a4165 FM |
1279 | |
1280 | ret = snd_card_register(codec->card); | |
1281 | if (ret < 0) { | |
3ff3f64b | 1282 | printk(KERN_ERR "asoc: failed to register soundcard for %s\n", |
db2a4165 | 1283 | codec->name); |
12e74f7d | 1284 | goto out; |
db2a4165 FM |
1285 | } |
1286 | ||
08c8efe6 | 1287 | mutex_lock(&codec->mutex); |
db2a4165 | 1288 | #ifdef CONFIG_SND_SOC_AC97_BUS |
12e74f7d LG |
1289 | if (ac97) { |
1290 | ret = soc_ac97_dev_register(codec); | |
1291 | if (ret < 0) { | |
1292 | printk(KERN_ERR "asoc: AC97 device register failed\n"); | |
1293 | snd_card_free(codec->card); | |
08c8efe6 | 1294 | mutex_unlock(&codec->mutex); |
12e74f7d LG |
1295 | goto out; |
1296 | } | |
1297 | } | |
db2a4165 FM |
1298 | #endif |
1299 | ||
12e74f7d LG |
1300 | err = snd_soc_dapm_sys_add(socdev->dev); |
1301 | if (err < 0) | |
1302 | printk(KERN_WARNING "asoc: failed to add dapm sysfs entries\n"); | |
1303 | ||
1304 | err = device_create_file(socdev->dev, &dev_attr_codec_reg); | |
1305 | if (err < 0) | |
3ff3f64b | 1306 | printk(KERN_WARNING "asoc: failed to add codec sysfs files\n"); |
08c8efe6 | 1307 | |
12ef193d | 1308 | soc_init_debugfs(socdev); |
db2a4165 | 1309 | mutex_unlock(&codec->mutex); |
08c8efe6 MB |
1310 | |
1311 | out: | |
db2a4165 FM |
1312 | return ret; |
1313 | } | |
968a6025 | 1314 | EXPORT_SYMBOL_GPL(snd_soc_init_card); |
db2a4165 FM |
1315 | |
1316 | /** | |
1317 | * snd_soc_free_pcms - free sound card and pcms | |
1318 | * @socdev: the SoC audio device | |
1319 | * | |
1320 | * Frees sound card and pcms associated with the socdev. | |
1321 | * Also unregister the codec if it is an AC97 device. | |
1322 | */ | |
1323 | void snd_soc_free_pcms(struct snd_soc_device *socdev) | |
1324 | { | |
1325 | struct snd_soc_codec *codec = socdev->codec; | |
a68660e0 | 1326 | #ifdef CONFIG_SND_SOC_AC97_BUS |
3c4b266f | 1327 | struct snd_soc_dai *codec_dai; |
a68660e0 LG |
1328 | int i; |
1329 | #endif | |
db2a4165 FM |
1330 | |
1331 | mutex_lock(&codec->mutex); | |
12ef193d | 1332 | soc_cleanup_debugfs(socdev); |
db2a4165 | 1333 | #ifdef CONFIG_SND_SOC_AC97_BUS |
3ff3f64b | 1334 | for (i = 0; i < codec->num_dai; i++) { |
a68660e0 | 1335 | codec_dai = &codec->dai[i]; |
3ba9e10a | 1336 | if (codec_dai->ac97_control && codec->ac97) { |
a68660e0 LG |
1337 | soc_ac97_dev_unregister(codec); |
1338 | goto free_card; | |
1339 | } | |
1340 | } | |
1341 | free_card: | |
db2a4165 FM |
1342 | #endif |
1343 | ||
1344 | if (codec->card) | |
1345 | snd_card_free(codec->card); | |
1346 | device_remove_file(socdev->dev, &dev_attr_codec_reg); | |
1347 | mutex_unlock(&codec->mutex); | |
1348 | } | |
1349 | EXPORT_SYMBOL_GPL(snd_soc_free_pcms); | |
1350 | ||
1351 | /** | |
1352 | * snd_soc_set_runtime_hwparams - set the runtime hardware parameters | |
1353 | * @substream: the pcm substream | |
1354 | * @hw: the hardware parameters | |
1355 | * | |
1356 | * Sets the substream runtime hardware parameters. | |
1357 | */ | |
1358 | int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream, | |
1359 | const struct snd_pcm_hardware *hw) | |
1360 | { | |
1361 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1362 | runtime->hw.info = hw->info; | |
1363 | runtime->hw.formats = hw->formats; | |
1364 | runtime->hw.period_bytes_min = hw->period_bytes_min; | |
1365 | runtime->hw.period_bytes_max = hw->period_bytes_max; | |
1366 | runtime->hw.periods_min = hw->periods_min; | |
1367 | runtime->hw.periods_max = hw->periods_max; | |
1368 | runtime->hw.buffer_bytes_max = hw->buffer_bytes_max; | |
1369 | runtime->hw.fifo_size = hw->fifo_size; | |
1370 | return 0; | |
1371 | } | |
1372 | EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams); | |
1373 | ||
1374 | /** | |
1375 | * snd_soc_cnew - create new control | |
1376 | * @_template: control template | |
1377 | * @data: control private data | |
1378 | * @lnng_name: control long name | |
1379 | * | |
1380 | * Create a new mixer control from a template control. | |
1381 | * | |
1382 | * Returns 0 for success, else error. | |
1383 | */ | |
1384 | struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template, | |
1385 | void *data, char *long_name) | |
1386 | { | |
1387 | struct snd_kcontrol_new template; | |
1388 | ||
1389 | memcpy(&template, _template, sizeof(template)); | |
1390 | if (long_name) | |
1391 | template.name = long_name; | |
db2a4165 FM |
1392 | template.index = 0; |
1393 | ||
1394 | return snd_ctl_new1(&template, data); | |
1395 | } | |
1396 | EXPORT_SYMBOL_GPL(snd_soc_cnew); | |
1397 | ||
1398 | /** | |
1399 | * snd_soc_info_enum_double - enumerated double mixer info callback | |
1400 | * @kcontrol: mixer control | |
1401 | * @uinfo: control element information | |
1402 | * | |
1403 | * Callback to provide information about a double enumerated | |
1404 | * mixer control. | |
1405 | * | |
1406 | * Returns 0 for success. | |
1407 | */ | |
1408 | int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol, | |
1409 | struct snd_ctl_elem_info *uinfo) | |
1410 | { | |
1411 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1412 | ||
1413 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; | |
1414 | uinfo->count = e->shift_l == e->shift_r ? 1 : 2; | |
f8ba0b7b | 1415 | uinfo->value.enumerated.items = e->max; |
db2a4165 | 1416 | |
f8ba0b7b JS |
1417 | if (uinfo->value.enumerated.item > e->max - 1) |
1418 | uinfo->value.enumerated.item = e->max - 1; | |
db2a4165 FM |
1419 | strcpy(uinfo->value.enumerated.name, |
1420 | e->texts[uinfo->value.enumerated.item]); | |
1421 | return 0; | |
1422 | } | |
1423 | EXPORT_SYMBOL_GPL(snd_soc_info_enum_double); | |
1424 | ||
1425 | /** | |
1426 | * snd_soc_get_enum_double - enumerated double mixer get callback | |
1427 | * @kcontrol: mixer control | |
1428 | * @uinfo: control element information | |
1429 | * | |
1430 | * Callback to get the value of a double enumerated mixer. | |
1431 | * | |
1432 | * Returns 0 for success. | |
1433 | */ | |
1434 | int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol, | |
1435 | struct snd_ctl_elem_value *ucontrol) | |
1436 | { | |
1437 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1438 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1439 | unsigned short val, bitmask; | |
1440 | ||
f8ba0b7b | 1441 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
db2a4165 FM |
1442 | ; |
1443 | val = snd_soc_read(codec, e->reg); | |
3ff3f64b MB |
1444 | ucontrol->value.enumerated.item[0] |
1445 | = (val >> e->shift_l) & (bitmask - 1); | |
db2a4165 FM |
1446 | if (e->shift_l != e->shift_r) |
1447 | ucontrol->value.enumerated.item[1] = | |
1448 | (val >> e->shift_r) & (bitmask - 1); | |
1449 | ||
1450 | return 0; | |
1451 | } | |
1452 | EXPORT_SYMBOL_GPL(snd_soc_get_enum_double); | |
1453 | ||
1454 | /** | |
1455 | * snd_soc_put_enum_double - enumerated double mixer put callback | |
1456 | * @kcontrol: mixer control | |
1457 | * @uinfo: control element information | |
1458 | * | |
1459 | * Callback to set the value of a double enumerated mixer. | |
1460 | * | |
1461 | * Returns 0 for success. | |
1462 | */ | |
1463 | int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol, | |
1464 | struct snd_ctl_elem_value *ucontrol) | |
1465 | { | |
1466 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1467 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1468 | unsigned short val; | |
1469 | unsigned short mask, bitmask; | |
1470 | ||
f8ba0b7b | 1471 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
db2a4165 | 1472 | ; |
f8ba0b7b | 1473 | if (ucontrol->value.enumerated.item[0] > e->max - 1) |
db2a4165 FM |
1474 | return -EINVAL; |
1475 | val = ucontrol->value.enumerated.item[0] << e->shift_l; | |
1476 | mask = (bitmask - 1) << e->shift_l; | |
1477 | if (e->shift_l != e->shift_r) { | |
f8ba0b7b | 1478 | if (ucontrol->value.enumerated.item[1] > e->max - 1) |
db2a4165 FM |
1479 | return -EINVAL; |
1480 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
1481 | mask |= (bitmask - 1) << e->shift_r; | |
1482 | } | |
1483 | ||
1484 | return snd_soc_update_bits(codec, e->reg, mask, val); | |
1485 | } | |
1486 | EXPORT_SYMBOL_GPL(snd_soc_put_enum_double); | |
1487 | ||
1488 | /** | |
1489 | * snd_soc_info_enum_ext - external enumerated single mixer info callback | |
1490 | * @kcontrol: mixer control | |
1491 | * @uinfo: control element information | |
1492 | * | |
1493 | * Callback to provide information about an external enumerated | |
1494 | * single mixer. | |
1495 | * | |
1496 | * Returns 0 for success. | |
1497 | */ | |
1498 | int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol, | |
1499 | struct snd_ctl_elem_info *uinfo) | |
1500 | { | |
1501 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1502 | ||
1503 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; | |
1504 | uinfo->count = 1; | |
f8ba0b7b | 1505 | uinfo->value.enumerated.items = e->max; |
db2a4165 | 1506 | |
f8ba0b7b JS |
1507 | if (uinfo->value.enumerated.item > e->max - 1) |
1508 | uinfo->value.enumerated.item = e->max - 1; | |
db2a4165 FM |
1509 | strcpy(uinfo->value.enumerated.name, |
1510 | e->texts[uinfo->value.enumerated.item]); | |
1511 | return 0; | |
1512 | } | |
1513 | EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext); | |
1514 | ||
1515 | /** | |
1516 | * snd_soc_info_volsw_ext - external single mixer info callback | |
1517 | * @kcontrol: mixer control | |
1518 | * @uinfo: control element information | |
1519 | * | |
1520 | * Callback to provide information about a single external mixer control. | |
1521 | * | |
1522 | * Returns 0 for success. | |
1523 | */ | |
1524 | int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol, | |
1525 | struct snd_ctl_elem_info *uinfo) | |
1526 | { | |
a7a4ac86 PZ |
1527 | int max = kcontrol->private_value; |
1528 | ||
1529 | if (max == 1) | |
1530 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1531 | else | |
1532 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
db2a4165 | 1533 | |
db2a4165 FM |
1534 | uinfo->count = 1; |
1535 | uinfo->value.integer.min = 0; | |
a7a4ac86 | 1536 | uinfo->value.integer.max = max; |
db2a4165 FM |
1537 | return 0; |
1538 | } | |
1539 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext); | |
1540 | ||
db2a4165 FM |
1541 | /** |
1542 | * snd_soc_info_volsw - single mixer info callback | |
1543 | * @kcontrol: mixer control | |
1544 | * @uinfo: control element information | |
1545 | * | |
1546 | * Callback to provide information about a single mixer control. | |
1547 | * | |
1548 | * Returns 0 for success. | |
1549 | */ | |
1550 | int snd_soc_info_volsw(struct snd_kcontrol *kcontrol, | |
1551 | struct snd_ctl_elem_info *uinfo) | |
1552 | { | |
4eaa9819 JS |
1553 | struct soc_mixer_control *mc = |
1554 | (struct soc_mixer_control *)kcontrol->private_value; | |
1555 | int max = mc->max; | |
762b8df7 | 1556 | unsigned int shift = mc->shift; |
815ecf8d | 1557 | unsigned int rshift = mc->rshift; |
db2a4165 | 1558 | |
a7a4ac86 PZ |
1559 | if (max == 1) |
1560 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1561 | else | |
1562 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
1563 | ||
db2a4165 FM |
1564 | uinfo->count = shift == rshift ? 1 : 2; |
1565 | uinfo->value.integer.min = 0; | |
a7a4ac86 | 1566 | uinfo->value.integer.max = max; |
db2a4165 FM |
1567 | return 0; |
1568 | } | |
1569 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw); | |
1570 | ||
1571 | /** | |
1572 | * snd_soc_get_volsw - single mixer get callback | |
1573 | * @kcontrol: mixer control | |
1574 | * @uinfo: control element information | |
1575 | * | |
1576 | * Callback to get the value of a single mixer control. | |
1577 | * | |
1578 | * Returns 0 for success. | |
1579 | */ | |
1580 | int snd_soc_get_volsw(struct snd_kcontrol *kcontrol, | |
1581 | struct snd_ctl_elem_value *ucontrol) | |
1582 | { | |
4eaa9819 JS |
1583 | struct soc_mixer_control *mc = |
1584 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 1585 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
1586 | unsigned int reg = mc->reg; |
1587 | unsigned int shift = mc->shift; | |
1588 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1589 | int max = mc->max; |
815ecf8d JS |
1590 | unsigned int mask = (1 << fls(max)) - 1; |
1591 | unsigned int invert = mc->invert; | |
db2a4165 FM |
1592 | |
1593 | ucontrol->value.integer.value[0] = | |
1594 | (snd_soc_read(codec, reg) >> shift) & mask; | |
1595 | if (shift != rshift) | |
1596 | ucontrol->value.integer.value[1] = | |
1597 | (snd_soc_read(codec, reg) >> rshift) & mask; | |
1598 | if (invert) { | |
1599 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1600 | max - ucontrol->value.integer.value[0]; |
db2a4165 FM |
1601 | if (shift != rshift) |
1602 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 1603 | max - ucontrol->value.integer.value[1]; |
db2a4165 FM |
1604 | } |
1605 | ||
1606 | return 0; | |
1607 | } | |
1608 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw); | |
1609 | ||
1610 | /** | |
1611 | * snd_soc_put_volsw - single mixer put callback | |
1612 | * @kcontrol: mixer control | |
1613 | * @uinfo: control element information | |
1614 | * | |
1615 | * Callback to set the value of a single mixer control. | |
1616 | * | |
1617 | * Returns 0 for success. | |
1618 | */ | |
1619 | int snd_soc_put_volsw(struct snd_kcontrol *kcontrol, | |
1620 | struct snd_ctl_elem_value *ucontrol) | |
1621 | { | |
4eaa9819 JS |
1622 | struct soc_mixer_control *mc = |
1623 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 1624 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
1625 | unsigned int reg = mc->reg; |
1626 | unsigned int shift = mc->shift; | |
1627 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1628 | int max = mc->max; |
815ecf8d JS |
1629 | unsigned int mask = (1 << fls(max)) - 1; |
1630 | unsigned int invert = mc->invert; | |
db2a4165 FM |
1631 | unsigned short val, val2, val_mask; |
1632 | ||
1633 | val = (ucontrol->value.integer.value[0] & mask); | |
1634 | if (invert) | |
a7a4ac86 | 1635 | val = max - val; |
db2a4165 FM |
1636 | val_mask = mask << shift; |
1637 | val = val << shift; | |
1638 | if (shift != rshift) { | |
1639 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1640 | if (invert) | |
a7a4ac86 | 1641 | val2 = max - val2; |
db2a4165 FM |
1642 | val_mask |= mask << rshift; |
1643 | val |= val2 << rshift; | |
1644 | } | |
a7a4ac86 | 1645 | return snd_soc_update_bits(codec, reg, val_mask, val); |
db2a4165 FM |
1646 | } |
1647 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw); | |
1648 | ||
1649 | /** | |
1650 | * snd_soc_info_volsw_2r - double mixer info callback | |
1651 | * @kcontrol: mixer control | |
1652 | * @uinfo: control element information | |
1653 | * | |
1654 | * Callback to provide information about a double mixer control that | |
1655 | * spans 2 codec registers. | |
1656 | * | |
1657 | * Returns 0 for success. | |
1658 | */ | |
1659 | int snd_soc_info_volsw_2r(struct snd_kcontrol *kcontrol, | |
1660 | struct snd_ctl_elem_info *uinfo) | |
1661 | { | |
4eaa9819 JS |
1662 | struct soc_mixer_control *mc = |
1663 | (struct soc_mixer_control *)kcontrol->private_value; | |
1664 | int max = mc->max; | |
a7a4ac86 PZ |
1665 | |
1666 | if (max == 1) | |
1667 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1668 | else | |
1669 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
db2a4165 | 1670 | |
db2a4165 FM |
1671 | uinfo->count = 2; |
1672 | uinfo->value.integer.min = 0; | |
a7a4ac86 | 1673 | uinfo->value.integer.max = max; |
db2a4165 FM |
1674 | return 0; |
1675 | } | |
1676 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r); | |
1677 | ||
1678 | /** | |
1679 | * snd_soc_get_volsw_2r - double mixer get callback | |
1680 | * @kcontrol: mixer control | |
1681 | * @uinfo: control element information | |
1682 | * | |
1683 | * Callback to get the value of a double mixer control that spans 2 registers. | |
1684 | * | |
1685 | * Returns 0 for success. | |
1686 | */ | |
1687 | int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol, | |
1688 | struct snd_ctl_elem_value *ucontrol) | |
1689 | { | |
4eaa9819 JS |
1690 | struct soc_mixer_control *mc = |
1691 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 1692 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
1693 | unsigned int reg = mc->reg; |
1694 | unsigned int reg2 = mc->rreg; | |
1695 | unsigned int shift = mc->shift; | |
4eaa9819 | 1696 | int max = mc->max; |
815ecf8d JS |
1697 | unsigned int mask = (1<<fls(max))-1; |
1698 | unsigned int invert = mc->invert; | |
db2a4165 FM |
1699 | |
1700 | ucontrol->value.integer.value[0] = | |
1701 | (snd_soc_read(codec, reg) >> shift) & mask; | |
1702 | ucontrol->value.integer.value[1] = | |
1703 | (snd_soc_read(codec, reg2) >> shift) & mask; | |
1704 | if (invert) { | |
1705 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1706 | max - ucontrol->value.integer.value[0]; |
db2a4165 | 1707 | ucontrol->value.integer.value[1] = |
a7a4ac86 | 1708 | max - ucontrol->value.integer.value[1]; |
db2a4165 FM |
1709 | } |
1710 | ||
1711 | return 0; | |
1712 | } | |
1713 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r); | |
1714 | ||
1715 | /** | |
1716 | * snd_soc_put_volsw_2r - double mixer set callback | |
1717 | * @kcontrol: mixer control | |
1718 | * @uinfo: control element information | |
1719 | * | |
1720 | * Callback to set the value of a double mixer control that spans 2 registers. | |
1721 | * | |
1722 | * Returns 0 for success. | |
1723 | */ | |
1724 | int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol, | |
1725 | struct snd_ctl_elem_value *ucontrol) | |
1726 | { | |
4eaa9819 JS |
1727 | struct soc_mixer_control *mc = |
1728 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 1729 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
1730 | unsigned int reg = mc->reg; |
1731 | unsigned int reg2 = mc->rreg; | |
1732 | unsigned int shift = mc->shift; | |
4eaa9819 | 1733 | int max = mc->max; |
815ecf8d JS |
1734 | unsigned int mask = (1 << fls(max)) - 1; |
1735 | unsigned int invert = mc->invert; | |
db2a4165 FM |
1736 | int err; |
1737 | unsigned short val, val2, val_mask; | |
1738 | ||
1739 | val_mask = mask << shift; | |
1740 | val = (ucontrol->value.integer.value[0] & mask); | |
1741 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1742 | ||
1743 | if (invert) { | |
a7a4ac86 PZ |
1744 | val = max - val; |
1745 | val2 = max - val2; | |
db2a4165 FM |
1746 | } |
1747 | ||
1748 | val = val << shift; | |
1749 | val2 = val2 << shift; | |
1750 | ||
3ff3f64b MB |
1751 | err = snd_soc_update_bits(codec, reg, val_mask, val); |
1752 | if (err < 0) | |
db2a4165 FM |
1753 | return err; |
1754 | ||
1755 | err = snd_soc_update_bits(codec, reg2, val_mask, val2); | |
1756 | return err; | |
1757 | } | |
1758 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r); | |
1759 | ||
e13ac2e9 MB |
1760 | /** |
1761 | * snd_soc_info_volsw_s8 - signed mixer info callback | |
1762 | * @kcontrol: mixer control | |
1763 | * @uinfo: control element information | |
1764 | * | |
1765 | * Callback to provide information about a signed mixer control. | |
1766 | * | |
1767 | * Returns 0 for success. | |
1768 | */ | |
1769 | int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol, | |
1770 | struct snd_ctl_elem_info *uinfo) | |
1771 | { | |
4eaa9819 JS |
1772 | struct soc_mixer_control *mc = |
1773 | (struct soc_mixer_control *)kcontrol->private_value; | |
1774 | int max = mc->max; | |
1775 | int min = mc->min; | |
e13ac2e9 MB |
1776 | |
1777 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
1778 | uinfo->count = 2; | |
1779 | uinfo->value.integer.min = 0; | |
1780 | uinfo->value.integer.max = max-min; | |
1781 | return 0; | |
1782 | } | |
1783 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8); | |
1784 | ||
1785 | /** | |
1786 | * snd_soc_get_volsw_s8 - signed mixer get callback | |
1787 | * @kcontrol: mixer control | |
1788 | * @uinfo: control element information | |
1789 | * | |
1790 | * Callback to get the value of a signed mixer control. | |
1791 | * | |
1792 | * Returns 0 for success. | |
1793 | */ | |
1794 | int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol, | |
1795 | struct snd_ctl_elem_value *ucontrol) | |
1796 | { | |
4eaa9819 JS |
1797 | struct soc_mixer_control *mc = |
1798 | (struct soc_mixer_control *)kcontrol->private_value; | |
e13ac2e9 | 1799 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d | 1800 | unsigned int reg = mc->reg; |
4eaa9819 | 1801 | int min = mc->min; |
e13ac2e9 MB |
1802 | int val = snd_soc_read(codec, reg); |
1803 | ||
1804 | ucontrol->value.integer.value[0] = | |
1805 | ((signed char)(val & 0xff))-min; | |
1806 | ucontrol->value.integer.value[1] = | |
1807 | ((signed char)((val >> 8) & 0xff))-min; | |
1808 | return 0; | |
1809 | } | |
1810 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8); | |
1811 | ||
1812 | /** | |
1813 | * snd_soc_put_volsw_sgn - signed mixer put callback | |
1814 | * @kcontrol: mixer control | |
1815 | * @uinfo: control element information | |
1816 | * | |
1817 | * Callback to set the value of a signed mixer control. | |
1818 | * | |
1819 | * Returns 0 for success. | |
1820 | */ | |
1821 | int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol, | |
1822 | struct snd_ctl_elem_value *ucontrol) | |
1823 | { | |
4eaa9819 JS |
1824 | struct soc_mixer_control *mc = |
1825 | (struct soc_mixer_control *)kcontrol->private_value; | |
e13ac2e9 | 1826 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d | 1827 | unsigned int reg = mc->reg; |
4eaa9819 | 1828 | int min = mc->min; |
e13ac2e9 MB |
1829 | unsigned short val; |
1830 | ||
1831 | val = (ucontrol->value.integer.value[0]+min) & 0xff; | |
1832 | val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8; | |
1833 | ||
1834 | return snd_soc_update_bits(codec, reg, 0xffff, val); | |
1835 | } | |
1836 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8); | |
1837 | ||
8c6529db LG |
1838 | /** |
1839 | * snd_soc_dai_set_sysclk - configure DAI system or master clock. | |
1840 | * @dai: DAI | |
1841 | * @clk_id: DAI specific clock ID | |
1842 | * @freq: new clock frequency in Hz | |
1843 | * @dir: new clock direction - input/output. | |
1844 | * | |
1845 | * Configures the DAI master (MCLK) or system (SYSCLK) clocking. | |
1846 | */ | |
1847 | int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id, | |
1848 | unsigned int freq, int dir) | |
1849 | { | |
dee89c4d MB |
1850 | if (dai->ops.set_sysclk) |
1851 | return dai->ops.set_sysclk(dai, clk_id, freq, dir); | |
8c6529db LG |
1852 | else |
1853 | return -EINVAL; | |
1854 | } | |
1855 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk); | |
1856 | ||
1857 | /** | |
1858 | * snd_soc_dai_set_clkdiv - configure DAI clock dividers. | |
1859 | * @dai: DAI | |
1860 | * @clk_id: DAI specific clock divider ID | |
1861 | * @div: new clock divisor. | |
1862 | * | |
1863 | * Configures the clock dividers. This is used to derive the best DAI bit and | |
1864 | * frame clocks from the system or master clock. It's best to set the DAI bit | |
1865 | * and frame clocks as low as possible to save system power. | |
1866 | */ | |
1867 | int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai, | |
1868 | int div_id, int div) | |
1869 | { | |
dee89c4d MB |
1870 | if (dai->ops.set_clkdiv) |
1871 | return dai->ops.set_clkdiv(dai, div_id, div); | |
8c6529db LG |
1872 | else |
1873 | return -EINVAL; | |
1874 | } | |
1875 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv); | |
1876 | ||
1877 | /** | |
1878 | * snd_soc_dai_set_pll - configure DAI PLL. | |
1879 | * @dai: DAI | |
1880 | * @pll_id: DAI specific PLL ID | |
1881 | * @freq_in: PLL input clock frequency in Hz | |
1882 | * @freq_out: requested PLL output clock frequency in Hz | |
1883 | * | |
1884 | * Configures and enables PLL to generate output clock based on input clock. | |
1885 | */ | |
1886 | int snd_soc_dai_set_pll(struct snd_soc_dai *dai, | |
1887 | int pll_id, unsigned int freq_in, unsigned int freq_out) | |
1888 | { | |
dee89c4d MB |
1889 | if (dai->ops.set_pll) |
1890 | return dai->ops.set_pll(dai, pll_id, freq_in, freq_out); | |
8c6529db LG |
1891 | else |
1892 | return -EINVAL; | |
1893 | } | |
1894 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll); | |
1895 | ||
1896 | /** | |
1897 | * snd_soc_dai_set_fmt - configure DAI hardware audio format. | |
1898 | * @dai: DAI | |
8c6529db LG |
1899 | * @fmt: SND_SOC_DAIFMT_ format value. |
1900 | * | |
1901 | * Configures the DAI hardware format and clocking. | |
1902 | */ | |
1903 | int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) | |
1904 | { | |
dee89c4d MB |
1905 | if (dai->ops.set_fmt) |
1906 | return dai->ops.set_fmt(dai, fmt); | |
8c6529db LG |
1907 | else |
1908 | return -EINVAL; | |
1909 | } | |
1910 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt); | |
1911 | ||
1912 | /** | |
1913 | * snd_soc_dai_set_tdm_slot - configure DAI TDM. | |
1914 | * @dai: DAI | |
1915 | * @mask: DAI specific mask representing used slots. | |
1916 | * @slots: Number of slots in use. | |
1917 | * | |
1918 | * Configures a DAI for TDM operation. Both mask and slots are codec and DAI | |
1919 | * specific. | |
1920 | */ | |
1921 | int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai, | |
1922 | unsigned int mask, int slots) | |
1923 | { | |
dee89c4d MB |
1924 | if (dai->ops.set_sysclk) |
1925 | return dai->ops.set_tdm_slot(dai, mask, slots); | |
8c6529db LG |
1926 | else |
1927 | return -EINVAL; | |
1928 | } | |
1929 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot); | |
1930 | ||
1931 | /** | |
1932 | * snd_soc_dai_set_tristate - configure DAI system or master clock. | |
1933 | * @dai: DAI | |
1934 | * @tristate: tristate enable | |
1935 | * | |
1936 | * Tristates the DAI so that others can use it. | |
1937 | */ | |
1938 | int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate) | |
1939 | { | |
dee89c4d MB |
1940 | if (dai->ops.set_sysclk) |
1941 | return dai->ops.set_tristate(dai, tristate); | |
8c6529db LG |
1942 | else |
1943 | return -EINVAL; | |
1944 | } | |
1945 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate); | |
1946 | ||
1947 | /** | |
1948 | * snd_soc_dai_digital_mute - configure DAI system or master clock. | |
1949 | * @dai: DAI | |
1950 | * @mute: mute enable | |
1951 | * | |
1952 | * Mutes the DAI DAC. | |
1953 | */ | |
1954 | int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute) | |
1955 | { | |
dee89c4d MB |
1956 | if (dai->ops.digital_mute) |
1957 | return dai->ops.digital_mute(dai, mute); | |
8c6529db LG |
1958 | else |
1959 | return -EINVAL; | |
1960 | } | |
1961 | EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute); | |
1962 | ||
db2a4165 FM |
1963 | static int __devinit snd_soc_init(void) |
1964 | { | |
db2a4165 FM |
1965 | return platform_driver_register(&soc_driver); |
1966 | } | |
1967 | ||
7d8c16a6 | 1968 | static void __exit snd_soc_exit(void) |
db2a4165 | 1969 | { |
3ff3f64b | 1970 | platform_driver_unregister(&soc_driver); |
db2a4165 FM |
1971 | } |
1972 | ||
1973 | module_init(snd_soc_init); | |
1974 | module_exit(snd_soc_exit); | |
1975 | ||
1976 | /* Module information */ | |
d331124d | 1977 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
db2a4165 FM |
1978 | MODULE_DESCRIPTION("ALSA SoC Core"); |
1979 | MODULE_LICENSE("GPL"); | |
8b45a209 | 1980 | MODULE_ALIAS("platform:soc-audio"); |