Commit | Line | Data |
---|---|---|
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 | ||
384c89e2 MB |
42 | #ifdef CONFIG_DEBUG_FS |
43 | static struct dentry *debugfs_root; | |
44 | #endif | |
45 | ||
db2a4165 FM |
46 | /* |
47 | * This is a timeout to do a DAPM powerdown after a stream is closed(). | |
48 | * It can be used to eliminate pops between different playback streams, e.g. | |
49 | * between two audio tracks. | |
50 | */ | |
51 | static int pmdown_time = 5000; | |
52 | module_param(pmdown_time, int, 0); | |
53 | MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)"); | |
54 | ||
965ac42c LG |
55 | /* |
56 | * This function forces any delayed work to be queued and run. | |
57 | */ | |
58 | static int run_delayed_work(struct delayed_work *dwork) | |
59 | { | |
60 | int ret; | |
61 | ||
62 | /* cancel any work waiting to be queued. */ | |
63 | ret = cancel_delayed_work(dwork); | |
64 | ||
65 | /* if there was any work waiting then we run it now and | |
66 | * wait for it's completion */ | |
67 | if (ret) { | |
68 | schedule_delayed_work(dwork, 0); | |
69 | flush_scheduled_work(); | |
70 | } | |
71 | return ret; | |
72 | } | |
73 | ||
db2a4165 FM |
74 | #ifdef CONFIG_SND_SOC_AC97_BUS |
75 | /* unregister ac97 codec */ | |
76 | static int soc_ac97_dev_unregister(struct snd_soc_codec *codec) | |
77 | { | |
78 | if (codec->ac97->dev.bus) | |
79 | device_unregister(&codec->ac97->dev); | |
80 | return 0; | |
81 | } | |
82 | ||
83 | /* stop no dev release warning */ | |
84 | static void soc_ac97_device_release(struct device *dev){} | |
85 | ||
86 | /* register ac97 codec to bus */ | |
87 | static int soc_ac97_dev_register(struct snd_soc_codec *codec) | |
88 | { | |
89 | int err; | |
90 | ||
91 | codec->ac97->dev.bus = &ac97_bus_type; | |
92 | codec->ac97->dev.parent = NULL; | |
93 | codec->ac97->dev.release = soc_ac97_device_release; | |
94 | ||
bb072bf0 KS |
95 | dev_set_name(&codec->ac97->dev, "%d-%d:%s", |
96 | codec->card->number, 0, codec->name); | |
db2a4165 FM |
97 | err = device_register(&codec->ac97->dev); |
98 | if (err < 0) { | |
99 | snd_printk(KERN_ERR "Can't register ac97 bus\n"); | |
100 | codec->ac97->dev.bus = NULL; | |
101 | return err; | |
102 | } | |
103 | return 0; | |
104 | } | |
105 | #endif | |
106 | ||
db2a4165 FM |
107 | /* |
108 | * Called by ALSA when a PCM substream is opened, the runtime->hw record is | |
109 | * then initialized and any private data can be allocated. This also calls | |
110 | * startup for the cpu DAI, platform, machine and codec DAI. | |
111 | */ | |
112 | static int soc_pcm_open(struct snd_pcm_substream *substream) | |
113 | { | |
114 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
115 | struct snd_soc_device *socdev = rtd->socdev; | |
87689d56 | 116 | struct snd_soc_card *card = socdev->card; |
db2a4165 | 117 | struct snd_pcm_runtime *runtime = substream->runtime; |
cb666e5b | 118 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 | 119 | struct snd_soc_platform *platform = card->platform; |
3c4b266f LG |
120 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
121 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
122 | int ret = 0; |
123 | ||
124 | mutex_lock(&pcm_mutex); | |
125 | ||
126 | /* startup the audio subsystem */ | |
cb666e5b | 127 | if (cpu_dai->ops.startup) { |
dee89c4d | 128 | ret = cpu_dai->ops.startup(substream, cpu_dai); |
db2a4165 FM |
129 | if (ret < 0) { |
130 | printk(KERN_ERR "asoc: can't open interface %s\n", | |
cb666e5b | 131 | cpu_dai->name); |
db2a4165 FM |
132 | goto out; |
133 | } | |
134 | } | |
135 | ||
136 | if (platform->pcm_ops->open) { | |
137 | ret = platform->pcm_ops->open(substream); | |
138 | if (ret < 0) { | |
139 | printk(KERN_ERR "asoc: can't open platform %s\n", platform->name); | |
140 | goto platform_err; | |
141 | } | |
142 | } | |
143 | ||
cb666e5b | 144 | if (codec_dai->ops.startup) { |
dee89c4d | 145 | ret = codec_dai->ops.startup(substream, codec_dai); |
db2a4165 | 146 | if (ret < 0) { |
cb666e5b LG |
147 | printk(KERN_ERR "asoc: can't open codec %s\n", |
148 | codec_dai->name); | |
149 | goto codec_dai_err; | |
db2a4165 FM |
150 | } |
151 | } | |
152 | ||
cb666e5b LG |
153 | if (machine->ops && machine->ops->startup) { |
154 | ret = machine->ops->startup(substream); | |
db2a4165 | 155 | if (ret < 0) { |
cb666e5b LG |
156 | printk(KERN_ERR "asoc: %s startup failed\n", machine->name); |
157 | goto machine_err; | |
db2a4165 FM |
158 | } |
159 | } | |
160 | ||
db2a4165 FM |
161 | /* Check that the codec and cpu DAI's are compatible */ |
162 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
163 | runtime->hw.rate_min = | |
3ff3f64b MB |
164 | max(codec_dai->playback.rate_min, |
165 | cpu_dai->playback.rate_min); | |
db2a4165 | 166 | runtime->hw.rate_max = |
3ff3f64b MB |
167 | min(codec_dai->playback.rate_max, |
168 | cpu_dai->playback.rate_max); | |
db2a4165 | 169 | runtime->hw.channels_min = |
cb666e5b LG |
170 | max(codec_dai->playback.channels_min, |
171 | cpu_dai->playback.channels_min); | |
db2a4165 | 172 | runtime->hw.channels_max = |
cb666e5b LG |
173 | min(codec_dai->playback.channels_max, |
174 | cpu_dai->playback.channels_max); | |
175 | runtime->hw.formats = | |
176 | codec_dai->playback.formats & cpu_dai->playback.formats; | |
177 | runtime->hw.rates = | |
178 | codec_dai->playback.rates & cpu_dai->playback.rates; | |
db2a4165 FM |
179 | } else { |
180 | runtime->hw.rate_min = | |
3ff3f64b MB |
181 | max(codec_dai->capture.rate_min, |
182 | cpu_dai->capture.rate_min); | |
db2a4165 | 183 | runtime->hw.rate_max = |
3ff3f64b MB |
184 | min(codec_dai->capture.rate_max, |
185 | cpu_dai->capture.rate_max); | |
db2a4165 | 186 | runtime->hw.channels_min = |
cb666e5b LG |
187 | max(codec_dai->capture.channels_min, |
188 | cpu_dai->capture.channels_min); | |
db2a4165 | 189 | runtime->hw.channels_max = |
cb666e5b LG |
190 | min(codec_dai->capture.channels_max, |
191 | cpu_dai->capture.channels_max); | |
192 | runtime->hw.formats = | |
193 | codec_dai->capture.formats & cpu_dai->capture.formats; | |
194 | runtime->hw.rates = | |
195 | codec_dai->capture.rates & cpu_dai->capture.rates; | |
db2a4165 FM |
196 | } |
197 | ||
198 | snd_pcm_limit_hw_rates(runtime); | |
199 | if (!runtime->hw.rates) { | |
200 | printk(KERN_ERR "asoc: %s <-> %s No matching rates\n", | |
cb666e5b LG |
201 | codec_dai->name, cpu_dai->name); |
202 | goto machine_err; | |
db2a4165 FM |
203 | } |
204 | if (!runtime->hw.formats) { | |
205 | printk(KERN_ERR "asoc: %s <-> %s No matching formats\n", | |
cb666e5b LG |
206 | codec_dai->name, cpu_dai->name); |
207 | goto machine_err; | |
db2a4165 FM |
208 | } |
209 | if (!runtime->hw.channels_min || !runtime->hw.channels_max) { | |
210 | printk(KERN_ERR "asoc: %s <-> %s No matching channels\n", | |
cb666e5b LG |
211 | codec_dai->name, cpu_dai->name); |
212 | goto machine_err; | |
db2a4165 FM |
213 | } |
214 | ||
f24368c2 MB |
215 | pr_debug("asoc: %s <-> %s info:\n", codec_dai->name, cpu_dai->name); |
216 | pr_debug("asoc: rate mask 0x%x\n", runtime->hw.rates); | |
217 | pr_debug("asoc: min ch %d max ch %d\n", runtime->hw.channels_min, | |
218 | runtime->hw.channels_max); | |
219 | pr_debug("asoc: min rate %d max rate %d\n", runtime->hw.rate_min, | |
220 | runtime->hw.rate_max); | |
db2a4165 | 221 | |
db2a4165 | 222 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
cb666e5b | 223 | cpu_dai->playback.active = codec_dai->playback.active = 1; |
db2a4165 | 224 | else |
cb666e5b LG |
225 | cpu_dai->capture.active = codec_dai->capture.active = 1; |
226 | cpu_dai->active = codec_dai->active = 1; | |
227 | cpu_dai->runtime = runtime; | |
db2a4165 FM |
228 | socdev->codec->active++; |
229 | mutex_unlock(&pcm_mutex); | |
230 | return 0; | |
231 | ||
cb666e5b | 232 | machine_err: |
db2a4165 FM |
233 | if (machine->ops && machine->ops->shutdown) |
234 | machine->ops->shutdown(substream); | |
235 | ||
cb666e5b | 236 | codec_dai_err: |
db2a4165 FM |
237 | if (platform->pcm_ops->close) |
238 | platform->pcm_ops->close(substream); | |
239 | ||
240 | platform_err: | |
cb666e5b | 241 | if (cpu_dai->ops.shutdown) |
dee89c4d | 242 | cpu_dai->ops.shutdown(substream, cpu_dai); |
db2a4165 FM |
243 | out: |
244 | mutex_unlock(&pcm_mutex); | |
245 | return ret; | |
246 | } | |
247 | ||
248 | /* | |
3a4fa0a2 | 249 | * Power down the audio subsystem pmdown_time msecs after close is called. |
db2a4165 FM |
250 | * This is to ensure there are no pops or clicks in between any music tracks |
251 | * due to DAPM power cycling. | |
252 | */ | |
4484bb2e | 253 | static void close_delayed_work(struct work_struct *work) |
db2a4165 | 254 | { |
6308419a MB |
255 | struct snd_soc_card *card = container_of(work, struct snd_soc_card, |
256 | delayed_work.work); | |
257 | struct snd_soc_device *socdev = card->socdev; | |
db2a4165 | 258 | struct snd_soc_codec *codec = socdev->codec; |
3c4b266f | 259 | struct snd_soc_dai *codec_dai; |
db2a4165 FM |
260 | int i; |
261 | ||
262 | mutex_lock(&pcm_mutex); | |
3ff3f64b | 263 | for (i = 0; i < codec->num_dai; i++) { |
db2a4165 FM |
264 | codec_dai = &codec->dai[i]; |
265 | ||
f24368c2 MB |
266 | pr_debug("pop wq checking: %s status: %s waiting: %s\n", |
267 | codec_dai->playback.stream_name, | |
268 | codec_dai->playback.active ? "active" : "inactive", | |
269 | codec_dai->pop_wait ? "yes" : "no"); | |
db2a4165 FM |
270 | |
271 | /* are we waiting on this codec DAI stream */ | |
272 | if (codec_dai->pop_wait == 1) { | |
273 | ||
0be9898a | 274 | /* Reduce power if no longer active */ |
3c1c47e0 | 275 | if (codec->active == 0) { |
f24368c2 MB |
276 | pr_debug("pop wq D1 %s %s\n", codec->name, |
277 | codec_dai->playback.stream_name); | |
0be9898a MB |
278 | snd_soc_dapm_set_bias_level(socdev, |
279 | SND_SOC_BIAS_PREPARE); | |
3c1c47e0 LG |
280 | } |
281 | ||
db2a4165 | 282 | codec_dai->pop_wait = 0; |
0b4d221b LG |
283 | snd_soc_dapm_stream_event(codec, |
284 | codec_dai->playback.stream_name, | |
db2a4165 FM |
285 | SND_SOC_DAPM_STREAM_STOP); |
286 | ||
0be9898a | 287 | /* Fall into standby if no longer active */ |
db2a4165 | 288 | if (codec->active == 0) { |
f24368c2 MB |
289 | pr_debug("pop wq D3 %s %s\n", codec->name, |
290 | codec_dai->playback.stream_name); | |
0be9898a MB |
291 | snd_soc_dapm_set_bias_level(socdev, |
292 | SND_SOC_BIAS_STANDBY); | |
db2a4165 FM |
293 | } |
294 | } | |
295 | } | |
296 | mutex_unlock(&pcm_mutex); | |
297 | } | |
298 | ||
299 | /* | |
300 | * Called by ALSA when a PCM substream is closed. Private data can be | |
301 | * freed here. The cpu DAI, codec DAI, machine and platform are also | |
302 | * shutdown. | |
303 | */ | |
304 | static int soc_codec_close(struct snd_pcm_substream *substream) | |
305 | { | |
306 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
307 | struct snd_soc_device *socdev = rtd->socdev; | |
6308419a | 308 | struct snd_soc_card *card = socdev->card; |
cb666e5b | 309 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 | 310 | struct snd_soc_platform *platform = card->platform; |
3c4b266f LG |
311 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
312 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
313 | struct snd_soc_codec *codec = socdev->codec; |
314 | ||
315 | mutex_lock(&pcm_mutex); | |
316 | ||
317 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
cb666e5b | 318 | cpu_dai->playback.active = codec_dai->playback.active = 0; |
db2a4165 | 319 | else |
cb666e5b | 320 | cpu_dai->capture.active = codec_dai->capture.active = 0; |
db2a4165 | 321 | |
cb666e5b LG |
322 | if (codec_dai->playback.active == 0 && |
323 | codec_dai->capture.active == 0) { | |
324 | cpu_dai->active = codec_dai->active = 0; | |
db2a4165 FM |
325 | } |
326 | codec->active--; | |
327 | ||
6010b2da MB |
328 | /* Muting the DAC suppresses artifacts caused during digital |
329 | * shutdown, for example from stopping clocks. | |
330 | */ | |
331 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
332 | snd_soc_dai_digital_mute(codec_dai, 1); | |
333 | ||
cb666e5b | 334 | if (cpu_dai->ops.shutdown) |
dee89c4d | 335 | cpu_dai->ops.shutdown(substream, cpu_dai); |
db2a4165 | 336 | |
cb666e5b | 337 | if (codec_dai->ops.shutdown) |
dee89c4d | 338 | codec_dai->ops.shutdown(substream, codec_dai); |
db2a4165 FM |
339 | |
340 | if (machine->ops && machine->ops->shutdown) | |
341 | machine->ops->shutdown(substream); | |
342 | ||
343 | if (platform->pcm_ops->close) | |
344 | platform->pcm_ops->close(substream); | |
cb666e5b | 345 | cpu_dai->runtime = NULL; |
db2a4165 FM |
346 | |
347 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
348 | /* start delayed pop wq here for playback streams */ | |
cb666e5b | 349 | codec_dai->pop_wait = 1; |
6308419a | 350 | schedule_delayed_work(&card->delayed_work, |
db2a4165 FM |
351 | msecs_to_jiffies(pmdown_time)); |
352 | } else { | |
353 | /* capture streams can be powered down now */ | |
cb666e5b | 354 | snd_soc_dapm_stream_event(codec, |
0b4d221b LG |
355 | codec_dai->capture.stream_name, |
356 | SND_SOC_DAPM_STREAM_STOP); | |
db2a4165 | 357 | |
0b4d221b | 358 | if (codec->active == 0 && codec_dai->pop_wait == 0) |
0be9898a MB |
359 | snd_soc_dapm_set_bias_level(socdev, |
360 | SND_SOC_BIAS_STANDBY); | |
db2a4165 FM |
361 | } |
362 | ||
363 | mutex_unlock(&pcm_mutex); | |
364 | return 0; | |
365 | } | |
366 | ||
367 | /* | |
368 | * Called by ALSA when the PCM substream is prepared, can set format, sample | |
369 | * rate, etc. This function is non atomic and can be called multiple times, | |
370 | * it can refer to the runtime info. | |
371 | */ | |
372 | static int soc_pcm_prepare(struct snd_pcm_substream *substream) | |
373 | { | |
374 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
375 | struct snd_soc_device *socdev = rtd->socdev; | |
6308419a | 376 | struct snd_soc_card *card = socdev->card; |
cb666e5b | 377 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 | 378 | struct snd_soc_platform *platform = card->platform; |
3c4b266f LG |
379 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
380 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
381 | struct snd_soc_codec *codec = socdev->codec; |
382 | int ret = 0; | |
383 | ||
384 | mutex_lock(&pcm_mutex); | |
cb666e5b LG |
385 | |
386 | if (machine->ops && machine->ops->prepare) { | |
387 | ret = machine->ops->prepare(substream); | |
388 | if (ret < 0) { | |
389 | printk(KERN_ERR "asoc: machine prepare error\n"); | |
390 | goto out; | |
391 | } | |
392 | } | |
393 | ||
db2a4165 FM |
394 | if (platform->pcm_ops->prepare) { |
395 | ret = platform->pcm_ops->prepare(substream); | |
a71a468a LG |
396 | if (ret < 0) { |
397 | printk(KERN_ERR "asoc: platform prepare error\n"); | |
db2a4165 | 398 | goto out; |
a71a468a | 399 | } |
db2a4165 FM |
400 | } |
401 | ||
cb666e5b | 402 | if (codec_dai->ops.prepare) { |
dee89c4d | 403 | ret = codec_dai->ops.prepare(substream, codec_dai); |
a71a468a LG |
404 | if (ret < 0) { |
405 | printk(KERN_ERR "asoc: codec DAI prepare error\n"); | |
db2a4165 | 406 | goto out; |
a71a468a | 407 | } |
db2a4165 FM |
408 | } |
409 | ||
cb666e5b | 410 | if (cpu_dai->ops.prepare) { |
dee89c4d | 411 | ret = cpu_dai->ops.prepare(substream, cpu_dai); |
cb666e5b LG |
412 | if (ret < 0) { |
413 | printk(KERN_ERR "asoc: cpu DAI prepare error\n"); | |
414 | goto out; | |
415 | } | |
416 | } | |
db2a4165 | 417 | |
d45f6219 MB |
418 | /* cancel any delayed stream shutdown that is pending */ |
419 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
420 | codec_dai->pop_wait) { | |
421 | codec_dai->pop_wait = 0; | |
6308419a | 422 | cancel_delayed_work(&card->delayed_work); |
d45f6219 | 423 | } |
db2a4165 | 424 | |
d45f6219 MB |
425 | /* do we need to power up codec */ |
426 | if (codec->bias_level != SND_SOC_BIAS_ON) { | |
427 | snd_soc_dapm_set_bias_level(socdev, | |
428 | SND_SOC_BIAS_PREPARE); | |
db2a4165 | 429 | |
d45f6219 MB |
430 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
431 | snd_soc_dapm_stream_event(codec, | |
cb666e5b | 432 | codec_dai->playback.stream_name, |
db2a4165 | 433 | SND_SOC_DAPM_STREAM_START); |
d45f6219 MB |
434 | else |
435 | snd_soc_dapm_stream_event(codec, | |
cb666e5b | 436 | codec_dai->capture.stream_name, |
db2a4165 FM |
437 | SND_SOC_DAPM_STREAM_START); |
438 | ||
d45f6219 MB |
439 | snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_ON); |
440 | snd_soc_dai_digital_mute(codec_dai, 0); | |
db2a4165 | 441 | |
d45f6219 MB |
442 | } else { |
443 | /* codec already powered - power on widgets */ | |
444 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
445 | snd_soc_dapm_stream_event(codec, | |
cb666e5b | 446 | codec_dai->playback.stream_name, |
db2a4165 | 447 | SND_SOC_DAPM_STREAM_START); |
d45f6219 MB |
448 | else |
449 | snd_soc_dapm_stream_event(codec, | |
cb666e5b | 450 | codec_dai->capture.stream_name, |
db2a4165 | 451 | SND_SOC_DAPM_STREAM_START); |
8c6529db | 452 | |
d45f6219 | 453 | snd_soc_dai_digital_mute(codec_dai, 0); |
db2a4165 FM |
454 | } |
455 | ||
456 | out: | |
457 | mutex_unlock(&pcm_mutex); | |
458 | return ret; | |
459 | } | |
460 | ||
461 | /* | |
462 | * Called by ALSA when the hardware params are set by application. This | |
463 | * function can also be called multiple times and can allocate buffers | |
464 | * (using snd_pcm_lib_* ). It's non-atomic. | |
465 | */ | |
466 | static int soc_pcm_hw_params(struct snd_pcm_substream *substream, | |
467 | struct snd_pcm_hw_params *params) | |
468 | { | |
469 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
470 | struct snd_soc_device *socdev = rtd->socdev; | |
cb666e5b | 471 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 MB |
472 | struct snd_soc_card *card = socdev->card; |
473 | struct snd_soc_platform *platform = card->platform; | |
3c4b266f LG |
474 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
475 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
476 | int ret = 0; |
477 | ||
478 | mutex_lock(&pcm_mutex); | |
479 | ||
cb666e5b LG |
480 | if (machine->ops && machine->ops->hw_params) { |
481 | ret = machine->ops->hw_params(substream, params); | |
482 | if (ret < 0) { | |
483 | printk(KERN_ERR "asoc: machine hw_params failed\n"); | |
db2a4165 | 484 | goto out; |
cb666e5b | 485 | } |
db2a4165 FM |
486 | } |
487 | ||
cb666e5b | 488 | if (codec_dai->ops.hw_params) { |
dee89c4d | 489 | ret = codec_dai->ops.hw_params(substream, params, codec_dai); |
db2a4165 FM |
490 | if (ret < 0) { |
491 | printk(KERN_ERR "asoc: can't set codec %s hw params\n", | |
cb666e5b LG |
492 | codec_dai->name); |
493 | goto codec_err; | |
db2a4165 FM |
494 | } |
495 | } | |
496 | ||
cb666e5b | 497 | if (cpu_dai->ops.hw_params) { |
dee89c4d | 498 | ret = cpu_dai->ops.hw_params(substream, params, cpu_dai); |
db2a4165 | 499 | if (ret < 0) { |
3ff3f64b | 500 | printk(KERN_ERR "asoc: interface %s hw params failed\n", |
cb666e5b | 501 | cpu_dai->name); |
db2a4165 FM |
502 | goto interface_err; |
503 | } | |
504 | } | |
505 | ||
506 | if (platform->pcm_ops->hw_params) { | |
507 | ret = platform->pcm_ops->hw_params(substream, params); | |
508 | if (ret < 0) { | |
3ff3f64b | 509 | printk(KERN_ERR "asoc: platform %s hw params failed\n", |
db2a4165 FM |
510 | platform->name); |
511 | goto platform_err; | |
512 | } | |
513 | } | |
514 | ||
db2a4165 FM |
515 | out: |
516 | mutex_unlock(&pcm_mutex); | |
517 | return ret; | |
518 | ||
db2a4165 | 519 | platform_err: |
cb666e5b | 520 | if (cpu_dai->ops.hw_free) |
dee89c4d | 521 | cpu_dai->ops.hw_free(substream, cpu_dai); |
db2a4165 FM |
522 | |
523 | interface_err: | |
cb666e5b | 524 | if (codec_dai->ops.hw_free) |
dee89c4d | 525 | codec_dai->ops.hw_free(substream, codec_dai); |
cb666e5b LG |
526 | |
527 | codec_err: | |
3ff3f64b | 528 | if (machine->ops && machine->ops->hw_free) |
cb666e5b | 529 | machine->ops->hw_free(substream); |
db2a4165 FM |
530 | |
531 | mutex_unlock(&pcm_mutex); | |
532 | return ret; | |
533 | } | |
534 | ||
535 | /* | |
536 | * Free's resources allocated by hw_params, can be called multiple times | |
537 | */ | |
538 | static int soc_pcm_hw_free(struct snd_pcm_substream *substream) | |
539 | { | |
540 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
541 | struct snd_soc_device *socdev = rtd->socdev; | |
cb666e5b | 542 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 MB |
543 | struct snd_soc_card *card = socdev->card; |
544 | struct snd_soc_platform *platform = card->platform; | |
3c4b266f LG |
545 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
546 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 | 547 | struct snd_soc_codec *codec = socdev->codec; |
db2a4165 FM |
548 | |
549 | mutex_lock(&pcm_mutex); | |
550 | ||
551 | /* apply codec digital mute */ | |
8c6529db LG |
552 | if (!codec->active) |
553 | snd_soc_dai_digital_mute(codec_dai, 1); | |
db2a4165 FM |
554 | |
555 | /* free any machine hw params */ | |
556 | if (machine->ops && machine->ops->hw_free) | |
557 | machine->ops->hw_free(substream); | |
558 | ||
559 | /* free any DMA resources */ | |
560 | if (platform->pcm_ops->hw_free) | |
561 | platform->pcm_ops->hw_free(substream); | |
562 | ||
563 | /* now free hw params for the DAI's */ | |
cb666e5b | 564 | if (codec_dai->ops.hw_free) |
dee89c4d | 565 | codec_dai->ops.hw_free(substream, codec_dai); |
db2a4165 | 566 | |
cb666e5b | 567 | if (cpu_dai->ops.hw_free) |
dee89c4d | 568 | cpu_dai->ops.hw_free(substream, cpu_dai); |
db2a4165 FM |
569 | |
570 | mutex_unlock(&pcm_mutex); | |
571 | return 0; | |
572 | } | |
573 | ||
574 | static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd) | |
575 | { | |
576 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
577 | struct snd_soc_device *socdev = rtd->socdev; | |
87689d56 | 578 | struct snd_soc_card *card= socdev->card; |
cb666e5b | 579 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 | 580 | struct snd_soc_platform *platform = card->platform; |
3c4b266f LG |
581 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
582 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
583 | int ret; |
584 | ||
cb666e5b | 585 | if (codec_dai->ops.trigger) { |
dee89c4d | 586 | ret = codec_dai->ops.trigger(substream, cmd, codec_dai); |
db2a4165 FM |
587 | if (ret < 0) |
588 | return ret; | |
589 | } | |
590 | ||
591 | if (platform->pcm_ops->trigger) { | |
592 | ret = platform->pcm_ops->trigger(substream, cmd); | |
593 | if (ret < 0) | |
594 | return ret; | |
595 | } | |
596 | ||
cb666e5b | 597 | if (cpu_dai->ops.trigger) { |
dee89c4d | 598 | ret = cpu_dai->ops.trigger(substream, cmd, cpu_dai); |
db2a4165 FM |
599 | if (ret < 0) |
600 | return ret; | |
601 | } | |
602 | return 0; | |
603 | } | |
604 | ||
605 | /* ASoC PCM operations */ | |
606 | static struct snd_pcm_ops soc_pcm_ops = { | |
607 | .open = soc_pcm_open, | |
608 | .close = soc_codec_close, | |
609 | .hw_params = soc_pcm_hw_params, | |
610 | .hw_free = soc_pcm_hw_free, | |
611 | .prepare = soc_pcm_prepare, | |
612 | .trigger = soc_pcm_trigger, | |
613 | }; | |
614 | ||
615 | #ifdef CONFIG_PM | |
616 | /* powers down audio subsystem for suspend */ | |
617 | static int soc_suspend(struct platform_device *pdev, pm_message_t state) | |
618 | { | |
3ff3f64b | 619 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
87506549 | 620 | struct snd_soc_card *card = socdev->card; |
87689d56 | 621 | struct snd_soc_platform *platform = card->platform; |
3ff3f64b | 622 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; |
db2a4165 FM |
623 | struct snd_soc_codec *codec = socdev->codec; |
624 | int i; | |
625 | ||
6ed25978 AG |
626 | /* Due to the resume being scheduled into a workqueue we could |
627 | * suspend before that's finished - wait for it to complete. | |
628 | */ | |
629 | snd_power_lock(codec->card); | |
630 | snd_power_wait(codec->card, SNDRV_CTL_POWER_D0); | |
631 | snd_power_unlock(codec->card); | |
632 | ||
633 | /* we're going to block userspace touching us until resume completes */ | |
634 | snd_power_change_state(codec->card, SNDRV_CTL_POWER_D3hot); | |
635 | ||
db2a4165 | 636 | /* mute any active DAC's */ |
dee89c4d MB |
637 | for (i = 0; i < card->num_links; i++) { |
638 | struct snd_soc_dai *dai = card->dai_link[i].codec_dai; | |
639 | if (dai->ops.digital_mute && dai->playback.active) | |
640 | dai->ops.digital_mute(dai, 1); | |
db2a4165 FM |
641 | } |
642 | ||
4ccab3e7 | 643 | /* suspend all pcms */ |
87506549 MB |
644 | for (i = 0; i < card->num_links; i++) |
645 | snd_pcm_suspend_all(card->dai_link[i].pcm); | |
4ccab3e7 | 646 | |
87506549 MB |
647 | if (card->suspend_pre) |
648 | card->suspend_pre(pdev, state); | |
db2a4165 | 649 | |
87506549 MB |
650 | for (i = 0; i < card->num_links; i++) { |
651 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
3ba9e10a | 652 | if (cpu_dai->suspend && !cpu_dai->ac97_control) |
db2a4165 FM |
653 | cpu_dai->suspend(pdev, cpu_dai); |
654 | if (platform->suspend) | |
07c84d04 | 655 | platform->suspend(cpu_dai); |
db2a4165 FM |
656 | } |
657 | ||
658 | /* close any waiting streams and save state */ | |
6308419a | 659 | run_delayed_work(&card->delayed_work); |
0be9898a | 660 | codec->suspend_bias_level = codec->bias_level; |
db2a4165 | 661 | |
3ff3f64b | 662 | for (i = 0; i < codec->num_dai; i++) { |
db2a4165 FM |
663 | char *stream = codec->dai[i].playback.stream_name; |
664 | if (stream != NULL) | |
665 | snd_soc_dapm_stream_event(codec, stream, | |
666 | SND_SOC_DAPM_STREAM_SUSPEND); | |
667 | stream = codec->dai[i].capture.stream_name; | |
668 | if (stream != NULL) | |
669 | snd_soc_dapm_stream_event(codec, stream, | |
670 | SND_SOC_DAPM_STREAM_SUSPEND); | |
671 | } | |
672 | ||
673 | if (codec_dev->suspend) | |
674 | codec_dev->suspend(pdev, state); | |
675 | ||
87506549 MB |
676 | for (i = 0; i < card->num_links; i++) { |
677 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
3ba9e10a | 678 | if (cpu_dai->suspend && cpu_dai->ac97_control) |
db2a4165 FM |
679 | cpu_dai->suspend(pdev, cpu_dai); |
680 | } | |
681 | ||
87506549 MB |
682 | if (card->suspend_post) |
683 | card->suspend_post(pdev, state); | |
db2a4165 FM |
684 | |
685 | return 0; | |
686 | } | |
687 | ||
6ed25978 AG |
688 | /* deferred resume work, so resume can complete before we finished |
689 | * setting our codec back up, which can be very slow on I2C | |
690 | */ | |
691 | static void soc_resume_deferred(struct work_struct *work) | |
db2a4165 | 692 | { |
6308419a MB |
693 | struct snd_soc_card *card = container_of(work, |
694 | struct snd_soc_card, | |
695 | deferred_resume_work); | |
696 | struct snd_soc_device *socdev = card->socdev; | |
87689d56 | 697 | struct snd_soc_platform *platform = card->platform; |
3ff3f64b | 698 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; |
db2a4165 | 699 | struct snd_soc_codec *codec = socdev->codec; |
6ed25978 | 700 | struct platform_device *pdev = to_platform_device(socdev->dev); |
db2a4165 FM |
701 | int i; |
702 | ||
6ed25978 AG |
703 | /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time, |
704 | * so userspace apps are blocked from touching us | |
705 | */ | |
706 | ||
fde22f27 | 707 | dev_dbg(socdev->dev, "starting resume work\n"); |
6ed25978 | 708 | |
87506549 MB |
709 | if (card->resume_pre) |
710 | card->resume_pre(pdev); | |
db2a4165 | 711 | |
87506549 MB |
712 | for (i = 0; i < card->num_links; i++) { |
713 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
3ba9e10a | 714 | if (cpu_dai->resume && cpu_dai->ac97_control) |
db2a4165 FM |
715 | cpu_dai->resume(pdev, cpu_dai); |
716 | } | |
717 | ||
718 | if (codec_dev->resume) | |
719 | codec_dev->resume(pdev); | |
720 | ||
3ff3f64b MB |
721 | for (i = 0; i < codec->num_dai; i++) { |
722 | char *stream = codec->dai[i].playback.stream_name; | |
db2a4165 FM |
723 | if (stream != NULL) |
724 | snd_soc_dapm_stream_event(codec, stream, | |
725 | SND_SOC_DAPM_STREAM_RESUME); | |
726 | stream = codec->dai[i].capture.stream_name; | |
727 | if (stream != NULL) | |
728 | snd_soc_dapm_stream_event(codec, stream, | |
729 | SND_SOC_DAPM_STREAM_RESUME); | |
730 | } | |
731 | ||
3ff3f64b | 732 | /* unmute any active DACs */ |
dee89c4d MB |
733 | for (i = 0; i < card->num_links; i++) { |
734 | struct snd_soc_dai *dai = card->dai_link[i].codec_dai; | |
735 | if (dai->ops.digital_mute && dai->playback.active) | |
736 | dai->ops.digital_mute(dai, 0); | |
db2a4165 FM |
737 | } |
738 | ||
87506549 MB |
739 | for (i = 0; i < card->num_links; i++) { |
740 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
3ba9e10a | 741 | if (cpu_dai->resume && !cpu_dai->ac97_control) |
db2a4165 FM |
742 | cpu_dai->resume(pdev, cpu_dai); |
743 | if (platform->resume) | |
07c84d04 | 744 | platform->resume(cpu_dai); |
db2a4165 FM |
745 | } |
746 | ||
87506549 MB |
747 | if (card->resume_post) |
748 | card->resume_post(pdev); | |
db2a4165 | 749 | |
fde22f27 | 750 | dev_dbg(socdev->dev, "resume work completed\n"); |
6ed25978 AG |
751 | |
752 | /* userspace can access us now we are back as we were before */ | |
753 | snd_power_change_state(codec->card, SNDRV_CTL_POWER_D0); | |
754 | } | |
755 | ||
756 | /* powers up audio subsystem after a suspend */ | |
757 | static int soc_resume(struct platform_device *pdev) | |
758 | { | |
759 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
6308419a | 760 | struct snd_soc_card *card = socdev->card; |
6ed25978 | 761 | |
fde22f27 | 762 | dev_dbg(socdev->dev, "scheduling resume work\n"); |
6ed25978 | 763 | |
6308419a | 764 | if (!schedule_work(&card->deferred_resume_work)) |
fde22f27 | 765 | dev_err(socdev->dev, "resume work item may be lost\n"); |
6ed25978 | 766 | |
db2a4165 FM |
767 | return 0; |
768 | } | |
769 | ||
770 | #else | |
771 | #define soc_suspend NULL | |
772 | #define soc_resume NULL | |
773 | #endif | |
774 | ||
775 | /* probes a new socdev */ | |
776 | static int soc_probe(struct platform_device *pdev) | |
777 | { | |
778 | int ret = 0, i; | |
779 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
87506549 | 780 | struct snd_soc_card *card = socdev->card; |
87689d56 | 781 | struct snd_soc_platform *platform = card->platform; |
db2a4165 FM |
782 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; |
783 | ||
6308419a MB |
784 | /* Bodge while we push things out of socdev */ |
785 | card->socdev = socdev; | |
786 | ||
87506549 MB |
787 | if (card->probe) { |
788 | ret = card->probe(pdev); | |
3ff3f64b | 789 | if (ret < 0) |
db2a4165 FM |
790 | return ret; |
791 | } | |
792 | ||
87506549 MB |
793 | for (i = 0; i < card->num_links; i++) { |
794 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
db2a4165 | 795 | if (cpu_dai->probe) { |
bdb92876 | 796 | ret = cpu_dai->probe(pdev, cpu_dai); |
3ff3f64b | 797 | if (ret < 0) |
db2a4165 FM |
798 | goto cpu_dai_err; |
799 | } | |
800 | } | |
801 | ||
802 | if (codec_dev->probe) { | |
803 | ret = codec_dev->probe(pdev); | |
3ff3f64b | 804 | if (ret < 0) |
db2a4165 FM |
805 | goto cpu_dai_err; |
806 | } | |
807 | ||
808 | if (platform->probe) { | |
809 | ret = platform->probe(pdev); | |
3ff3f64b | 810 | if (ret < 0) |
db2a4165 FM |
811 | goto platform_err; |
812 | } | |
813 | ||
814 | /* DAPM stream work */ | |
6308419a | 815 | INIT_DELAYED_WORK(&card->delayed_work, close_delayed_work); |
1301a964 | 816 | #ifdef CONFIG_PM |
6ed25978 | 817 | /* deferred resume work */ |
6308419a | 818 | INIT_WORK(&card->deferred_resume_work, soc_resume_deferred); |
1301a964 | 819 | #endif |
6ed25978 | 820 | |
db2a4165 FM |
821 | return 0; |
822 | ||
db2a4165 FM |
823 | platform_err: |
824 | if (codec_dev->remove) | |
825 | codec_dev->remove(pdev); | |
826 | ||
827 | cpu_dai_err: | |
18b9b3d9 | 828 | for (i--; i >= 0; i--) { |
87506549 | 829 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; |
db2a4165 | 830 | if (cpu_dai->remove) |
bdb92876 | 831 | cpu_dai->remove(pdev, cpu_dai); |
db2a4165 FM |
832 | } |
833 | ||
87506549 MB |
834 | if (card->remove) |
835 | card->remove(pdev); | |
db2a4165 FM |
836 | |
837 | return ret; | |
838 | } | |
839 | ||
840 | /* removes a socdev */ | |
841 | static int soc_remove(struct platform_device *pdev) | |
842 | { | |
843 | int i; | |
844 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
87506549 | 845 | struct snd_soc_card *card = socdev->card; |
87689d56 | 846 | struct snd_soc_platform *platform = card->platform; |
db2a4165 FM |
847 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; |
848 | ||
6308419a | 849 | run_delayed_work(&card->delayed_work); |
965ac42c | 850 | |
db2a4165 FM |
851 | if (platform->remove) |
852 | platform->remove(pdev); | |
853 | ||
854 | if (codec_dev->remove) | |
855 | codec_dev->remove(pdev); | |
856 | ||
87506549 MB |
857 | for (i = 0; i < card->num_links; i++) { |
858 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
db2a4165 | 859 | if (cpu_dai->remove) |
bdb92876 | 860 | cpu_dai->remove(pdev, cpu_dai); |
db2a4165 FM |
861 | } |
862 | ||
87506549 MB |
863 | if (card->remove) |
864 | card->remove(pdev); | |
db2a4165 FM |
865 | |
866 | return 0; | |
867 | } | |
868 | ||
869 | /* ASoC platform driver */ | |
870 | static struct platform_driver soc_driver = { | |
871 | .driver = { | |
872 | .name = "soc-audio", | |
8b45a209 | 873 | .owner = THIS_MODULE, |
db2a4165 FM |
874 | }, |
875 | .probe = soc_probe, | |
876 | .remove = soc_remove, | |
877 | .suspend = soc_suspend, | |
878 | .resume = soc_resume, | |
879 | }; | |
880 | ||
881 | /* create a new pcm */ | |
882 | static int soc_new_pcm(struct snd_soc_device *socdev, | |
883 | struct snd_soc_dai_link *dai_link, int num) | |
884 | { | |
885 | struct snd_soc_codec *codec = socdev->codec; | |
87689d56 MB |
886 | struct snd_soc_card *card = socdev->card; |
887 | struct snd_soc_platform *platform = card->platform; | |
3c4b266f LG |
888 | struct snd_soc_dai *codec_dai = dai_link->codec_dai; |
889 | struct snd_soc_dai *cpu_dai = dai_link->cpu_dai; | |
db2a4165 FM |
890 | struct snd_soc_pcm_runtime *rtd; |
891 | struct snd_pcm *pcm; | |
892 | char new_name[64]; | |
893 | int ret = 0, playback = 0, capture = 0; | |
894 | ||
895 | rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime), GFP_KERNEL); | |
896 | if (rtd == NULL) | |
897 | return -ENOMEM; | |
cb666e5b LG |
898 | |
899 | rtd->dai = dai_link; | |
db2a4165 | 900 | rtd->socdev = socdev; |
cb666e5b | 901 | codec_dai->codec = socdev->codec; |
db2a4165 FM |
902 | |
903 | /* check client and interface hw capabilities */ | |
3ba9e10a MB |
904 | sprintf(new_name, "%s %s-%d", dai_link->stream_name, codec_dai->name, |
905 | num); | |
db2a4165 FM |
906 | |
907 | if (codec_dai->playback.channels_min) | |
908 | playback = 1; | |
909 | if (codec_dai->capture.channels_min) | |
910 | capture = 1; | |
911 | ||
912 | ret = snd_pcm_new(codec->card, new_name, codec->pcm_devs++, playback, | |
913 | capture, &pcm); | |
914 | if (ret < 0) { | |
3ff3f64b MB |
915 | printk(KERN_ERR "asoc: can't create pcm for codec %s\n", |
916 | codec->name); | |
db2a4165 FM |
917 | kfree(rtd); |
918 | return ret; | |
919 | } | |
920 | ||
4ccab3e7 | 921 | dai_link->pcm = pcm; |
db2a4165 | 922 | pcm->private_data = rtd; |
87689d56 MB |
923 | soc_pcm_ops.mmap = platform->pcm_ops->mmap; |
924 | soc_pcm_ops.pointer = platform->pcm_ops->pointer; | |
925 | soc_pcm_ops.ioctl = platform->pcm_ops->ioctl; | |
926 | soc_pcm_ops.copy = platform->pcm_ops->copy; | |
927 | soc_pcm_ops.silence = platform->pcm_ops->silence; | |
928 | soc_pcm_ops.ack = platform->pcm_ops->ack; | |
929 | soc_pcm_ops.page = platform->pcm_ops->page; | |
db2a4165 FM |
930 | |
931 | if (playback) | |
932 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &soc_pcm_ops); | |
933 | ||
934 | if (capture) | |
935 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &soc_pcm_ops); | |
936 | ||
87689d56 | 937 | ret = platform->pcm_new(codec->card, codec_dai, pcm); |
db2a4165 FM |
938 | if (ret < 0) { |
939 | printk(KERN_ERR "asoc: platform pcm constructor failed\n"); | |
940 | kfree(rtd); | |
941 | return ret; | |
942 | } | |
943 | ||
87689d56 | 944 | pcm->private_free = platform->pcm_free; |
db2a4165 FM |
945 | printk(KERN_INFO "asoc: %s <-> %s mapping ok\n", codec_dai->name, |
946 | cpu_dai->name); | |
947 | return ret; | |
948 | } | |
949 | ||
950 | /* codec register dump */ | |
12ef193d | 951 | static ssize_t soc_codec_reg_show(struct snd_soc_device *devdata, char *buf) |
db2a4165 | 952 | { |
db2a4165 FM |
953 | struct snd_soc_codec *codec = devdata->codec; |
954 | int i, step = 1, count = 0; | |
955 | ||
956 | if (!codec->reg_cache_size) | |
957 | return 0; | |
958 | ||
959 | if (codec->reg_cache_step) | |
960 | step = codec->reg_cache_step; | |
961 | ||
962 | count += sprintf(buf, "%s registers\n", codec->name); | |
58cd33c0 MB |
963 | for (i = 0; i < codec->reg_cache_size; i += step) { |
964 | count += sprintf(buf + count, "%2x: ", i); | |
965 | if (count >= PAGE_SIZE - 1) | |
966 | break; | |
967 | ||
968 | if (codec->display_register) | |
969 | count += codec->display_register(codec, buf + count, | |
970 | PAGE_SIZE - count, i); | |
971 | else | |
972 | count += snprintf(buf + count, PAGE_SIZE - count, | |
973 | "%4x", codec->read(codec, i)); | |
974 | ||
975 | if (count >= PAGE_SIZE - 1) | |
976 | break; | |
977 | ||
978 | count += snprintf(buf + count, PAGE_SIZE - count, "\n"); | |
979 | if (count >= PAGE_SIZE - 1) | |
980 | break; | |
981 | } | |
982 | ||
983 | /* Truncate count; min() would cause a warning */ | |
984 | if (count >= PAGE_SIZE) | |
985 | count = PAGE_SIZE - 1; | |
db2a4165 FM |
986 | |
987 | return count; | |
988 | } | |
12ef193d TK |
989 | static ssize_t codec_reg_show(struct device *dev, |
990 | struct device_attribute *attr, char *buf) | |
991 | { | |
992 | struct snd_soc_device *devdata = dev_get_drvdata(dev); | |
993 | return soc_codec_reg_show(devdata, buf); | |
994 | } | |
995 | ||
db2a4165 FM |
996 | static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL); |
997 | ||
12ef193d TK |
998 | #ifdef CONFIG_DEBUG_FS |
999 | static int codec_reg_open_file(struct inode *inode, struct file *file) | |
1000 | { | |
1001 | file->private_data = inode->i_private; | |
1002 | return 0; | |
1003 | } | |
1004 | ||
1005 | static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf, | |
1006 | size_t count, loff_t *ppos) | |
1007 | { | |
1008 | ssize_t ret; | |
384c89e2 MB |
1009 | struct snd_soc_codec *codec = file->private_data; |
1010 | struct device *card_dev = codec->card->dev; | |
1011 | struct snd_soc_device *devdata = card_dev->driver_data; | |
12ef193d TK |
1012 | char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL); |
1013 | if (!buf) | |
1014 | return -ENOMEM; | |
1015 | ret = soc_codec_reg_show(devdata, buf); | |
1016 | if (ret >= 0) | |
1017 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); | |
1018 | kfree(buf); | |
1019 | return ret; | |
1020 | } | |
1021 | ||
1022 | static ssize_t codec_reg_write_file(struct file *file, | |
1023 | const char __user *user_buf, size_t count, loff_t *ppos) | |
1024 | { | |
1025 | char buf[32]; | |
1026 | int buf_size; | |
1027 | char *start = buf; | |
1028 | unsigned long reg, value; | |
1029 | int step = 1; | |
384c89e2 | 1030 | struct snd_soc_codec *codec = file->private_data; |
12ef193d TK |
1031 | |
1032 | buf_size = min(count, (sizeof(buf)-1)); | |
1033 | if (copy_from_user(buf, user_buf, buf_size)) | |
1034 | return -EFAULT; | |
1035 | buf[buf_size] = 0; | |
1036 | ||
1037 | if (codec->reg_cache_step) | |
1038 | step = codec->reg_cache_step; | |
1039 | ||
1040 | while (*start == ' ') | |
1041 | start++; | |
1042 | reg = simple_strtoul(start, &start, 16); | |
1043 | if ((reg >= codec->reg_cache_size) || (reg % step)) | |
1044 | return -EINVAL; | |
1045 | while (*start == ' ') | |
1046 | start++; | |
1047 | if (strict_strtoul(start, 16, &value)) | |
1048 | return -EINVAL; | |
1049 | codec->write(codec, reg, value); | |
1050 | return buf_size; | |
1051 | } | |
1052 | ||
1053 | static const struct file_operations codec_reg_fops = { | |
1054 | .open = codec_reg_open_file, | |
1055 | .read = codec_reg_read_file, | |
1056 | .write = codec_reg_write_file, | |
1057 | }; | |
1058 | ||
384c89e2 | 1059 | static void soc_init_codec_debugfs(struct snd_soc_codec *codec) |
12ef193d | 1060 | { |
384c89e2 MB |
1061 | codec->debugfs_reg = debugfs_create_file("codec_reg", 0644, |
1062 | debugfs_root, codec, | |
1063 | &codec_reg_fops); | |
1064 | if (!codec->debugfs_reg) | |
1065 | printk(KERN_WARNING | |
1066 | "ASoC: Failed to create codec register debugfs file\n"); | |
1067 | ||
1068 | codec->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0744, | |
1069 | debugfs_root, | |
1070 | &codec->pop_time); | |
1071 | if (!codec->debugfs_pop_time) | |
1072 | printk(KERN_WARNING | |
1073 | "Failed to create pop time debugfs file\n"); | |
12ef193d TK |
1074 | } |
1075 | ||
384c89e2 | 1076 | static void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec) |
12ef193d | 1077 | { |
384c89e2 MB |
1078 | debugfs_remove(codec->debugfs_pop_time); |
1079 | debugfs_remove(codec->debugfs_reg); | |
12ef193d TK |
1080 | } |
1081 | ||
1082 | #else | |
1083 | ||
384c89e2 | 1084 | static inline void soc_init_codec_debugfs(struct snd_soc_codec *codec) |
12ef193d TK |
1085 | { |
1086 | } | |
1087 | ||
384c89e2 | 1088 | static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec) |
12ef193d TK |
1089 | { |
1090 | } | |
1091 | #endif | |
1092 | ||
db2a4165 FM |
1093 | /** |
1094 | * snd_soc_new_ac97_codec - initailise AC97 device | |
1095 | * @codec: audio codec | |
1096 | * @ops: AC97 bus operations | |
1097 | * @num: AC97 codec number | |
1098 | * | |
1099 | * Initialises AC97 codec resources for use by ad-hoc devices only. | |
1100 | */ | |
1101 | int snd_soc_new_ac97_codec(struct snd_soc_codec *codec, | |
1102 | struct snd_ac97_bus_ops *ops, int num) | |
1103 | { | |
1104 | mutex_lock(&codec->mutex); | |
1105 | ||
1106 | codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL); | |
1107 | if (codec->ac97 == NULL) { | |
1108 | mutex_unlock(&codec->mutex); | |
1109 | return -ENOMEM; | |
1110 | } | |
1111 | ||
1112 | codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL); | |
1113 | if (codec->ac97->bus == NULL) { | |
1114 | kfree(codec->ac97); | |
1115 | codec->ac97 = NULL; | |
1116 | mutex_unlock(&codec->mutex); | |
1117 | return -ENOMEM; | |
1118 | } | |
1119 | ||
1120 | codec->ac97->bus->ops = ops; | |
1121 | codec->ac97->num = num; | |
1122 | mutex_unlock(&codec->mutex); | |
1123 | return 0; | |
1124 | } | |
1125 | EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec); | |
1126 | ||
1127 | /** | |
1128 | * snd_soc_free_ac97_codec - free AC97 codec device | |
1129 | * @codec: audio codec | |
1130 | * | |
1131 | * Frees AC97 codec device resources. | |
1132 | */ | |
1133 | void snd_soc_free_ac97_codec(struct snd_soc_codec *codec) | |
1134 | { | |
1135 | mutex_lock(&codec->mutex); | |
1136 | kfree(codec->ac97->bus); | |
1137 | kfree(codec->ac97); | |
1138 | codec->ac97 = NULL; | |
1139 | mutex_unlock(&codec->mutex); | |
1140 | } | |
1141 | EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec); | |
1142 | ||
1143 | /** | |
1144 | * snd_soc_update_bits - update codec register bits | |
1145 | * @codec: audio codec | |
1146 | * @reg: codec register | |
1147 | * @mask: register mask | |
1148 | * @value: new value | |
1149 | * | |
1150 | * Writes new register value. | |
1151 | * | |
1152 | * Returns 1 for change else 0. | |
1153 | */ | |
1154 | int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg, | |
1155 | unsigned short mask, unsigned short value) | |
1156 | { | |
1157 | int change; | |
1158 | unsigned short old, new; | |
1159 | ||
1160 | mutex_lock(&io_mutex); | |
1161 | old = snd_soc_read(codec, reg); | |
1162 | new = (old & ~mask) | value; | |
1163 | change = old != new; | |
1164 | if (change) | |
1165 | snd_soc_write(codec, reg, new); | |
1166 | ||
1167 | mutex_unlock(&io_mutex); | |
1168 | return change; | |
1169 | } | |
1170 | EXPORT_SYMBOL_GPL(snd_soc_update_bits); | |
1171 | ||
1172 | /** | |
1173 | * snd_soc_test_bits - test register for change | |
1174 | * @codec: audio codec | |
1175 | * @reg: codec register | |
1176 | * @mask: register mask | |
1177 | * @value: new value | |
1178 | * | |
1179 | * Tests a register with a new value and checks if the new value is | |
1180 | * different from the old value. | |
1181 | * | |
1182 | * Returns 1 for change else 0. | |
1183 | */ | |
1184 | int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg, | |
1185 | unsigned short mask, unsigned short value) | |
1186 | { | |
1187 | int change; | |
1188 | unsigned short old, new; | |
1189 | ||
1190 | mutex_lock(&io_mutex); | |
1191 | old = snd_soc_read(codec, reg); | |
1192 | new = (old & ~mask) | value; | |
1193 | change = old != new; | |
1194 | mutex_unlock(&io_mutex); | |
1195 | ||
1196 | return change; | |
1197 | } | |
1198 | EXPORT_SYMBOL_GPL(snd_soc_test_bits); | |
1199 | ||
db2a4165 FM |
1200 | /** |
1201 | * snd_soc_new_pcms - create new sound card and pcms | |
1202 | * @socdev: the SoC audio device | |
1203 | * | |
1204 | * Create a new sound card based upon the codec and interface pcms. | |
1205 | * | |
1206 | * Returns 0 for success, else error. | |
1207 | */ | |
bc7320c5 | 1208 | int snd_soc_new_pcms(struct snd_soc_device *socdev, int idx, const char *xid) |
db2a4165 FM |
1209 | { |
1210 | struct snd_soc_codec *codec = socdev->codec; | |
87506549 | 1211 | struct snd_soc_card *card = socdev->card; |
db2a4165 FM |
1212 | int ret = 0, i; |
1213 | ||
1214 | mutex_lock(&codec->mutex); | |
1215 | ||
1216 | /* register a sound card */ | |
1217 | codec->card = snd_card_new(idx, xid, codec->owner, 0); | |
1218 | if (!codec->card) { | |
1219 | printk(KERN_ERR "asoc: can't create sound card for codec %s\n", | |
1220 | codec->name); | |
1221 | mutex_unlock(&codec->mutex); | |
1222 | return -ENODEV; | |
1223 | } | |
1224 | ||
1225 | codec->card->dev = socdev->dev; | |
1226 | codec->card->private_data = codec; | |
1227 | strncpy(codec->card->driver, codec->name, sizeof(codec->card->driver)); | |
1228 | ||
1229 | /* create the pcms */ | |
87506549 MB |
1230 | for (i = 0; i < card->num_links; i++) { |
1231 | ret = soc_new_pcm(socdev, &card->dai_link[i], i); | |
db2a4165 FM |
1232 | if (ret < 0) { |
1233 | printk(KERN_ERR "asoc: can't create pcm %s\n", | |
87506549 | 1234 | card->dai_link[i].stream_name); |
db2a4165 FM |
1235 | mutex_unlock(&codec->mutex); |
1236 | return ret; | |
1237 | } | |
1238 | } | |
1239 | ||
1240 | mutex_unlock(&codec->mutex); | |
1241 | return ret; | |
1242 | } | |
1243 | EXPORT_SYMBOL_GPL(snd_soc_new_pcms); | |
1244 | ||
1245 | /** | |
968a6025 | 1246 | * snd_soc_init_card - register sound card |
db2a4165 FM |
1247 | * @socdev: the SoC audio device |
1248 | * | |
1249 | * Register a SoC sound card. Also registers an AC97 device if the | |
1250 | * codec is AC97 for ad hoc devices. | |
1251 | * | |
1252 | * Returns 0 for success, else error. | |
1253 | */ | |
968a6025 | 1254 | int snd_soc_init_card(struct snd_soc_device *socdev) |
db2a4165 FM |
1255 | { |
1256 | struct snd_soc_codec *codec = socdev->codec; | |
87506549 | 1257 | struct snd_soc_card *card = socdev->card; |
12e74f7d | 1258 | int ret = 0, i, ac97 = 0, err = 0; |
db2a4165 | 1259 | |
87506549 MB |
1260 | for (i = 0; i < card->num_links; i++) { |
1261 | if (card->dai_link[i].init) { | |
1262 | err = card->dai_link[i].init(codec); | |
12e74f7d LG |
1263 | if (err < 0) { |
1264 | printk(KERN_ERR "asoc: failed to init %s\n", | |
87506549 | 1265 | card->dai_link[i].stream_name); |
12e74f7d LG |
1266 | continue; |
1267 | } | |
1268 | } | |
3ba9e10a | 1269 | if (card->dai_link[i].codec_dai->ac97_control) |
db2a4165 FM |
1270 | ac97 = 1; |
1271 | } | |
1272 | snprintf(codec->card->shortname, sizeof(codec->card->shortname), | |
87506549 | 1273 | "%s", card->name); |
db2a4165 | 1274 | snprintf(codec->card->longname, sizeof(codec->card->longname), |
87506549 | 1275 | "%s (%s)", card->name, codec->name); |
db2a4165 FM |
1276 | |
1277 | ret = snd_card_register(codec->card); | |
1278 | if (ret < 0) { | |
3ff3f64b | 1279 | printk(KERN_ERR "asoc: failed to register soundcard for %s\n", |
db2a4165 | 1280 | codec->name); |
12e74f7d | 1281 | goto out; |
db2a4165 FM |
1282 | } |
1283 | ||
08c8efe6 | 1284 | mutex_lock(&codec->mutex); |
db2a4165 | 1285 | #ifdef CONFIG_SND_SOC_AC97_BUS |
12e74f7d LG |
1286 | if (ac97) { |
1287 | ret = soc_ac97_dev_register(codec); | |
1288 | if (ret < 0) { | |
1289 | printk(KERN_ERR "asoc: AC97 device register failed\n"); | |
1290 | snd_card_free(codec->card); | |
08c8efe6 | 1291 | mutex_unlock(&codec->mutex); |
12e74f7d LG |
1292 | goto out; |
1293 | } | |
1294 | } | |
db2a4165 FM |
1295 | #endif |
1296 | ||
12e74f7d LG |
1297 | err = snd_soc_dapm_sys_add(socdev->dev); |
1298 | if (err < 0) | |
1299 | printk(KERN_WARNING "asoc: failed to add dapm sysfs entries\n"); | |
1300 | ||
1301 | err = device_create_file(socdev->dev, &dev_attr_codec_reg); | |
1302 | if (err < 0) | |
3ff3f64b | 1303 | printk(KERN_WARNING "asoc: failed to add codec sysfs files\n"); |
08c8efe6 | 1304 | |
384c89e2 | 1305 | soc_init_codec_debugfs(socdev->codec); |
db2a4165 | 1306 | mutex_unlock(&codec->mutex); |
08c8efe6 MB |
1307 | |
1308 | out: | |
db2a4165 FM |
1309 | return ret; |
1310 | } | |
968a6025 | 1311 | EXPORT_SYMBOL_GPL(snd_soc_init_card); |
db2a4165 FM |
1312 | |
1313 | /** | |
1314 | * snd_soc_free_pcms - free sound card and pcms | |
1315 | * @socdev: the SoC audio device | |
1316 | * | |
1317 | * Frees sound card and pcms associated with the socdev. | |
1318 | * Also unregister the codec if it is an AC97 device. | |
1319 | */ | |
1320 | void snd_soc_free_pcms(struct snd_soc_device *socdev) | |
1321 | { | |
1322 | struct snd_soc_codec *codec = socdev->codec; | |
a68660e0 | 1323 | #ifdef CONFIG_SND_SOC_AC97_BUS |
3c4b266f | 1324 | struct snd_soc_dai *codec_dai; |
a68660e0 LG |
1325 | int i; |
1326 | #endif | |
db2a4165 FM |
1327 | |
1328 | mutex_lock(&codec->mutex); | |
384c89e2 | 1329 | soc_cleanup_codec_debugfs(socdev->codec); |
db2a4165 | 1330 | #ifdef CONFIG_SND_SOC_AC97_BUS |
3ff3f64b | 1331 | for (i = 0; i < codec->num_dai; i++) { |
a68660e0 | 1332 | codec_dai = &codec->dai[i]; |
3ba9e10a | 1333 | if (codec_dai->ac97_control && codec->ac97) { |
a68660e0 LG |
1334 | soc_ac97_dev_unregister(codec); |
1335 | goto free_card; | |
1336 | } | |
1337 | } | |
1338 | free_card: | |
db2a4165 FM |
1339 | #endif |
1340 | ||
1341 | if (codec->card) | |
1342 | snd_card_free(codec->card); | |
1343 | device_remove_file(socdev->dev, &dev_attr_codec_reg); | |
1344 | mutex_unlock(&codec->mutex); | |
1345 | } | |
1346 | EXPORT_SYMBOL_GPL(snd_soc_free_pcms); | |
1347 | ||
1348 | /** | |
1349 | * snd_soc_set_runtime_hwparams - set the runtime hardware parameters | |
1350 | * @substream: the pcm substream | |
1351 | * @hw: the hardware parameters | |
1352 | * | |
1353 | * Sets the substream runtime hardware parameters. | |
1354 | */ | |
1355 | int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream, | |
1356 | const struct snd_pcm_hardware *hw) | |
1357 | { | |
1358 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1359 | runtime->hw.info = hw->info; | |
1360 | runtime->hw.formats = hw->formats; | |
1361 | runtime->hw.period_bytes_min = hw->period_bytes_min; | |
1362 | runtime->hw.period_bytes_max = hw->period_bytes_max; | |
1363 | runtime->hw.periods_min = hw->periods_min; | |
1364 | runtime->hw.periods_max = hw->periods_max; | |
1365 | runtime->hw.buffer_bytes_max = hw->buffer_bytes_max; | |
1366 | runtime->hw.fifo_size = hw->fifo_size; | |
1367 | return 0; | |
1368 | } | |
1369 | EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams); | |
1370 | ||
1371 | /** | |
1372 | * snd_soc_cnew - create new control | |
1373 | * @_template: control template | |
1374 | * @data: control private data | |
1375 | * @lnng_name: control long name | |
1376 | * | |
1377 | * Create a new mixer control from a template control. | |
1378 | * | |
1379 | * Returns 0 for success, else error. | |
1380 | */ | |
1381 | struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template, | |
1382 | void *data, char *long_name) | |
1383 | { | |
1384 | struct snd_kcontrol_new template; | |
1385 | ||
1386 | memcpy(&template, _template, sizeof(template)); | |
1387 | if (long_name) | |
1388 | template.name = long_name; | |
db2a4165 FM |
1389 | template.index = 0; |
1390 | ||
1391 | return snd_ctl_new1(&template, data); | |
1392 | } | |
1393 | EXPORT_SYMBOL_GPL(snd_soc_cnew); | |
1394 | ||
1395 | /** | |
1396 | * snd_soc_info_enum_double - enumerated double mixer info callback | |
1397 | * @kcontrol: mixer control | |
1398 | * @uinfo: control element information | |
1399 | * | |
1400 | * Callback to provide information about a double enumerated | |
1401 | * mixer control. | |
1402 | * | |
1403 | * Returns 0 for success. | |
1404 | */ | |
1405 | int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol, | |
1406 | struct snd_ctl_elem_info *uinfo) | |
1407 | { | |
1408 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1409 | ||
1410 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; | |
1411 | uinfo->count = e->shift_l == e->shift_r ? 1 : 2; | |
f8ba0b7b | 1412 | uinfo->value.enumerated.items = e->max; |
db2a4165 | 1413 | |
f8ba0b7b JS |
1414 | if (uinfo->value.enumerated.item > e->max - 1) |
1415 | uinfo->value.enumerated.item = e->max - 1; | |
db2a4165 FM |
1416 | strcpy(uinfo->value.enumerated.name, |
1417 | e->texts[uinfo->value.enumerated.item]); | |
1418 | return 0; | |
1419 | } | |
1420 | EXPORT_SYMBOL_GPL(snd_soc_info_enum_double); | |
1421 | ||
1422 | /** | |
1423 | * snd_soc_get_enum_double - enumerated double mixer get callback | |
1424 | * @kcontrol: mixer control | |
1425 | * @uinfo: control element information | |
1426 | * | |
1427 | * Callback to get the value of a double enumerated mixer. | |
1428 | * | |
1429 | * Returns 0 for success. | |
1430 | */ | |
1431 | int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol, | |
1432 | struct snd_ctl_elem_value *ucontrol) | |
1433 | { | |
1434 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1435 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1436 | unsigned short val, bitmask; | |
1437 | ||
f8ba0b7b | 1438 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
db2a4165 FM |
1439 | ; |
1440 | val = snd_soc_read(codec, e->reg); | |
3ff3f64b MB |
1441 | ucontrol->value.enumerated.item[0] |
1442 | = (val >> e->shift_l) & (bitmask - 1); | |
db2a4165 FM |
1443 | if (e->shift_l != e->shift_r) |
1444 | ucontrol->value.enumerated.item[1] = | |
1445 | (val >> e->shift_r) & (bitmask - 1); | |
1446 | ||
1447 | return 0; | |
1448 | } | |
1449 | EXPORT_SYMBOL_GPL(snd_soc_get_enum_double); | |
1450 | ||
1451 | /** | |
1452 | * snd_soc_put_enum_double - enumerated double mixer put callback | |
1453 | * @kcontrol: mixer control | |
1454 | * @uinfo: control element information | |
1455 | * | |
1456 | * Callback to set the value of a double enumerated mixer. | |
1457 | * | |
1458 | * Returns 0 for success. | |
1459 | */ | |
1460 | int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol, | |
1461 | struct snd_ctl_elem_value *ucontrol) | |
1462 | { | |
1463 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1464 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1465 | unsigned short val; | |
1466 | unsigned short mask, bitmask; | |
1467 | ||
f8ba0b7b | 1468 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
db2a4165 | 1469 | ; |
f8ba0b7b | 1470 | if (ucontrol->value.enumerated.item[0] > e->max - 1) |
db2a4165 FM |
1471 | return -EINVAL; |
1472 | val = ucontrol->value.enumerated.item[0] << e->shift_l; | |
1473 | mask = (bitmask - 1) << e->shift_l; | |
1474 | if (e->shift_l != e->shift_r) { | |
f8ba0b7b | 1475 | if (ucontrol->value.enumerated.item[1] > e->max - 1) |
db2a4165 FM |
1476 | return -EINVAL; |
1477 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
1478 | mask |= (bitmask - 1) << e->shift_r; | |
1479 | } | |
1480 | ||
1481 | return snd_soc_update_bits(codec, e->reg, mask, val); | |
1482 | } | |
1483 | EXPORT_SYMBOL_GPL(snd_soc_put_enum_double); | |
1484 | ||
1485 | /** | |
1486 | * snd_soc_info_enum_ext - external enumerated single mixer info callback | |
1487 | * @kcontrol: mixer control | |
1488 | * @uinfo: control element information | |
1489 | * | |
1490 | * Callback to provide information about an external enumerated | |
1491 | * single mixer. | |
1492 | * | |
1493 | * Returns 0 for success. | |
1494 | */ | |
1495 | int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol, | |
1496 | struct snd_ctl_elem_info *uinfo) | |
1497 | { | |
1498 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1499 | ||
1500 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; | |
1501 | uinfo->count = 1; | |
f8ba0b7b | 1502 | uinfo->value.enumerated.items = e->max; |
db2a4165 | 1503 | |
f8ba0b7b JS |
1504 | if (uinfo->value.enumerated.item > e->max - 1) |
1505 | uinfo->value.enumerated.item = e->max - 1; | |
db2a4165 FM |
1506 | strcpy(uinfo->value.enumerated.name, |
1507 | e->texts[uinfo->value.enumerated.item]); | |
1508 | return 0; | |
1509 | } | |
1510 | EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext); | |
1511 | ||
1512 | /** | |
1513 | * snd_soc_info_volsw_ext - external single mixer info callback | |
1514 | * @kcontrol: mixer control | |
1515 | * @uinfo: control element information | |
1516 | * | |
1517 | * Callback to provide information about a single external mixer control. | |
1518 | * | |
1519 | * Returns 0 for success. | |
1520 | */ | |
1521 | int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol, | |
1522 | struct snd_ctl_elem_info *uinfo) | |
1523 | { | |
a7a4ac86 PZ |
1524 | int max = kcontrol->private_value; |
1525 | ||
1526 | if (max == 1) | |
1527 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1528 | else | |
1529 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
db2a4165 | 1530 | |
db2a4165 FM |
1531 | uinfo->count = 1; |
1532 | uinfo->value.integer.min = 0; | |
a7a4ac86 | 1533 | uinfo->value.integer.max = max; |
db2a4165 FM |
1534 | return 0; |
1535 | } | |
1536 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext); | |
1537 | ||
db2a4165 FM |
1538 | /** |
1539 | * snd_soc_info_volsw - single mixer info callback | |
1540 | * @kcontrol: mixer control | |
1541 | * @uinfo: control element information | |
1542 | * | |
1543 | * Callback to provide information about a single mixer control. | |
1544 | * | |
1545 | * Returns 0 for success. | |
1546 | */ | |
1547 | int snd_soc_info_volsw(struct snd_kcontrol *kcontrol, | |
1548 | struct snd_ctl_elem_info *uinfo) | |
1549 | { | |
4eaa9819 JS |
1550 | struct soc_mixer_control *mc = |
1551 | (struct soc_mixer_control *)kcontrol->private_value; | |
1552 | int max = mc->max; | |
762b8df7 | 1553 | unsigned int shift = mc->shift; |
815ecf8d | 1554 | unsigned int rshift = mc->rshift; |
db2a4165 | 1555 | |
a7a4ac86 PZ |
1556 | if (max == 1) |
1557 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1558 | else | |
1559 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
1560 | ||
db2a4165 FM |
1561 | uinfo->count = shift == rshift ? 1 : 2; |
1562 | uinfo->value.integer.min = 0; | |
a7a4ac86 | 1563 | uinfo->value.integer.max = max; |
db2a4165 FM |
1564 | return 0; |
1565 | } | |
1566 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw); | |
1567 | ||
1568 | /** | |
1569 | * snd_soc_get_volsw - single mixer get callback | |
1570 | * @kcontrol: mixer control | |
1571 | * @uinfo: control element information | |
1572 | * | |
1573 | * Callback to get the value of a single mixer control. | |
1574 | * | |
1575 | * Returns 0 for success. | |
1576 | */ | |
1577 | int snd_soc_get_volsw(struct snd_kcontrol *kcontrol, | |
1578 | struct snd_ctl_elem_value *ucontrol) | |
1579 | { | |
4eaa9819 JS |
1580 | struct soc_mixer_control *mc = |
1581 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 1582 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
1583 | unsigned int reg = mc->reg; |
1584 | unsigned int shift = mc->shift; | |
1585 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1586 | int max = mc->max; |
815ecf8d JS |
1587 | unsigned int mask = (1 << fls(max)) - 1; |
1588 | unsigned int invert = mc->invert; | |
db2a4165 FM |
1589 | |
1590 | ucontrol->value.integer.value[0] = | |
1591 | (snd_soc_read(codec, reg) >> shift) & mask; | |
1592 | if (shift != rshift) | |
1593 | ucontrol->value.integer.value[1] = | |
1594 | (snd_soc_read(codec, reg) >> rshift) & mask; | |
1595 | if (invert) { | |
1596 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1597 | max - ucontrol->value.integer.value[0]; |
db2a4165 FM |
1598 | if (shift != rshift) |
1599 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 1600 | max - ucontrol->value.integer.value[1]; |
db2a4165 FM |
1601 | } |
1602 | ||
1603 | return 0; | |
1604 | } | |
1605 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw); | |
1606 | ||
1607 | /** | |
1608 | * snd_soc_put_volsw - single mixer put callback | |
1609 | * @kcontrol: mixer control | |
1610 | * @uinfo: control element information | |
1611 | * | |
1612 | * Callback to set the value of a single mixer control. | |
1613 | * | |
1614 | * Returns 0 for success. | |
1615 | */ | |
1616 | int snd_soc_put_volsw(struct snd_kcontrol *kcontrol, | |
1617 | struct snd_ctl_elem_value *ucontrol) | |
1618 | { | |
4eaa9819 JS |
1619 | struct soc_mixer_control *mc = |
1620 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 1621 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
1622 | unsigned int reg = mc->reg; |
1623 | unsigned int shift = mc->shift; | |
1624 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1625 | int max = mc->max; |
815ecf8d JS |
1626 | unsigned int mask = (1 << fls(max)) - 1; |
1627 | unsigned int invert = mc->invert; | |
db2a4165 FM |
1628 | unsigned short val, val2, val_mask; |
1629 | ||
1630 | val = (ucontrol->value.integer.value[0] & mask); | |
1631 | if (invert) | |
a7a4ac86 | 1632 | val = max - val; |
db2a4165 FM |
1633 | val_mask = mask << shift; |
1634 | val = val << shift; | |
1635 | if (shift != rshift) { | |
1636 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1637 | if (invert) | |
a7a4ac86 | 1638 | val2 = max - val2; |
db2a4165 FM |
1639 | val_mask |= mask << rshift; |
1640 | val |= val2 << rshift; | |
1641 | } | |
a7a4ac86 | 1642 | return snd_soc_update_bits(codec, reg, val_mask, val); |
db2a4165 FM |
1643 | } |
1644 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw); | |
1645 | ||
1646 | /** | |
1647 | * snd_soc_info_volsw_2r - double mixer info callback | |
1648 | * @kcontrol: mixer control | |
1649 | * @uinfo: control element information | |
1650 | * | |
1651 | * Callback to provide information about a double mixer control that | |
1652 | * spans 2 codec registers. | |
1653 | * | |
1654 | * Returns 0 for success. | |
1655 | */ | |
1656 | int snd_soc_info_volsw_2r(struct snd_kcontrol *kcontrol, | |
1657 | struct snd_ctl_elem_info *uinfo) | |
1658 | { | |
4eaa9819 JS |
1659 | struct soc_mixer_control *mc = |
1660 | (struct soc_mixer_control *)kcontrol->private_value; | |
1661 | int max = mc->max; | |
a7a4ac86 PZ |
1662 | |
1663 | if (max == 1) | |
1664 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1665 | else | |
1666 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
db2a4165 | 1667 | |
db2a4165 FM |
1668 | uinfo->count = 2; |
1669 | uinfo->value.integer.min = 0; | |
a7a4ac86 | 1670 | uinfo->value.integer.max = max; |
db2a4165 FM |
1671 | return 0; |
1672 | } | |
1673 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r); | |
1674 | ||
1675 | /** | |
1676 | * snd_soc_get_volsw_2r - double mixer get callback | |
1677 | * @kcontrol: mixer control | |
1678 | * @uinfo: control element information | |
1679 | * | |
1680 | * Callback to get the value of a double mixer control that spans 2 registers. | |
1681 | * | |
1682 | * Returns 0 for success. | |
1683 | */ | |
1684 | int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol, | |
1685 | struct snd_ctl_elem_value *ucontrol) | |
1686 | { | |
4eaa9819 JS |
1687 | struct soc_mixer_control *mc = |
1688 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 1689 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
1690 | unsigned int reg = mc->reg; |
1691 | unsigned int reg2 = mc->rreg; | |
1692 | unsigned int shift = mc->shift; | |
4eaa9819 | 1693 | int max = mc->max; |
815ecf8d JS |
1694 | unsigned int mask = (1<<fls(max))-1; |
1695 | unsigned int invert = mc->invert; | |
db2a4165 FM |
1696 | |
1697 | ucontrol->value.integer.value[0] = | |
1698 | (snd_soc_read(codec, reg) >> shift) & mask; | |
1699 | ucontrol->value.integer.value[1] = | |
1700 | (snd_soc_read(codec, reg2) >> shift) & mask; | |
1701 | if (invert) { | |
1702 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1703 | max - ucontrol->value.integer.value[0]; |
db2a4165 | 1704 | ucontrol->value.integer.value[1] = |
a7a4ac86 | 1705 | max - ucontrol->value.integer.value[1]; |
db2a4165 FM |
1706 | } |
1707 | ||
1708 | return 0; | |
1709 | } | |
1710 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r); | |
1711 | ||
1712 | /** | |
1713 | * snd_soc_put_volsw_2r - double mixer set callback | |
1714 | * @kcontrol: mixer control | |
1715 | * @uinfo: control element information | |
1716 | * | |
1717 | * Callback to set the value of a double mixer control that spans 2 registers. | |
1718 | * | |
1719 | * Returns 0 for success. | |
1720 | */ | |
1721 | int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol, | |
1722 | struct snd_ctl_elem_value *ucontrol) | |
1723 | { | |
4eaa9819 JS |
1724 | struct soc_mixer_control *mc = |
1725 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 1726 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
1727 | unsigned int reg = mc->reg; |
1728 | unsigned int reg2 = mc->rreg; | |
1729 | unsigned int shift = mc->shift; | |
4eaa9819 | 1730 | int max = mc->max; |
815ecf8d JS |
1731 | unsigned int mask = (1 << fls(max)) - 1; |
1732 | unsigned int invert = mc->invert; | |
db2a4165 FM |
1733 | int err; |
1734 | unsigned short val, val2, val_mask; | |
1735 | ||
1736 | val_mask = mask << shift; | |
1737 | val = (ucontrol->value.integer.value[0] & mask); | |
1738 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1739 | ||
1740 | if (invert) { | |
a7a4ac86 PZ |
1741 | val = max - val; |
1742 | val2 = max - val2; | |
db2a4165 FM |
1743 | } |
1744 | ||
1745 | val = val << shift; | |
1746 | val2 = val2 << shift; | |
1747 | ||
3ff3f64b MB |
1748 | err = snd_soc_update_bits(codec, reg, val_mask, val); |
1749 | if (err < 0) | |
db2a4165 FM |
1750 | return err; |
1751 | ||
1752 | err = snd_soc_update_bits(codec, reg2, val_mask, val2); | |
1753 | return err; | |
1754 | } | |
1755 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r); | |
1756 | ||
e13ac2e9 MB |
1757 | /** |
1758 | * snd_soc_info_volsw_s8 - signed mixer info callback | |
1759 | * @kcontrol: mixer control | |
1760 | * @uinfo: control element information | |
1761 | * | |
1762 | * Callback to provide information about a signed mixer control. | |
1763 | * | |
1764 | * Returns 0 for success. | |
1765 | */ | |
1766 | int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol, | |
1767 | struct snd_ctl_elem_info *uinfo) | |
1768 | { | |
4eaa9819 JS |
1769 | struct soc_mixer_control *mc = |
1770 | (struct soc_mixer_control *)kcontrol->private_value; | |
1771 | int max = mc->max; | |
1772 | int min = mc->min; | |
e13ac2e9 MB |
1773 | |
1774 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
1775 | uinfo->count = 2; | |
1776 | uinfo->value.integer.min = 0; | |
1777 | uinfo->value.integer.max = max-min; | |
1778 | return 0; | |
1779 | } | |
1780 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8); | |
1781 | ||
1782 | /** | |
1783 | * snd_soc_get_volsw_s8 - signed mixer get callback | |
1784 | * @kcontrol: mixer control | |
1785 | * @uinfo: control element information | |
1786 | * | |
1787 | * Callback to get the value of a signed mixer control. | |
1788 | * | |
1789 | * Returns 0 for success. | |
1790 | */ | |
1791 | int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol, | |
1792 | struct snd_ctl_elem_value *ucontrol) | |
1793 | { | |
4eaa9819 JS |
1794 | struct soc_mixer_control *mc = |
1795 | (struct soc_mixer_control *)kcontrol->private_value; | |
e13ac2e9 | 1796 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d | 1797 | unsigned int reg = mc->reg; |
4eaa9819 | 1798 | int min = mc->min; |
e13ac2e9 MB |
1799 | int val = snd_soc_read(codec, reg); |
1800 | ||
1801 | ucontrol->value.integer.value[0] = | |
1802 | ((signed char)(val & 0xff))-min; | |
1803 | ucontrol->value.integer.value[1] = | |
1804 | ((signed char)((val >> 8) & 0xff))-min; | |
1805 | return 0; | |
1806 | } | |
1807 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8); | |
1808 | ||
1809 | /** | |
1810 | * snd_soc_put_volsw_sgn - signed mixer put callback | |
1811 | * @kcontrol: mixer control | |
1812 | * @uinfo: control element information | |
1813 | * | |
1814 | * Callback to set the value of a signed mixer control. | |
1815 | * | |
1816 | * Returns 0 for success. | |
1817 | */ | |
1818 | int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol, | |
1819 | struct snd_ctl_elem_value *ucontrol) | |
1820 | { | |
4eaa9819 JS |
1821 | struct soc_mixer_control *mc = |
1822 | (struct soc_mixer_control *)kcontrol->private_value; | |
e13ac2e9 | 1823 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d | 1824 | unsigned int reg = mc->reg; |
4eaa9819 | 1825 | int min = mc->min; |
e13ac2e9 MB |
1826 | unsigned short val; |
1827 | ||
1828 | val = (ucontrol->value.integer.value[0]+min) & 0xff; | |
1829 | val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8; | |
1830 | ||
1831 | return snd_soc_update_bits(codec, reg, 0xffff, val); | |
1832 | } | |
1833 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8); | |
1834 | ||
8c6529db LG |
1835 | /** |
1836 | * snd_soc_dai_set_sysclk - configure DAI system or master clock. | |
1837 | * @dai: DAI | |
1838 | * @clk_id: DAI specific clock ID | |
1839 | * @freq: new clock frequency in Hz | |
1840 | * @dir: new clock direction - input/output. | |
1841 | * | |
1842 | * Configures the DAI master (MCLK) or system (SYSCLK) clocking. | |
1843 | */ | |
1844 | int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id, | |
1845 | unsigned int freq, int dir) | |
1846 | { | |
dee89c4d MB |
1847 | if (dai->ops.set_sysclk) |
1848 | return dai->ops.set_sysclk(dai, clk_id, freq, dir); | |
8c6529db LG |
1849 | else |
1850 | return -EINVAL; | |
1851 | } | |
1852 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk); | |
1853 | ||
1854 | /** | |
1855 | * snd_soc_dai_set_clkdiv - configure DAI clock dividers. | |
1856 | * @dai: DAI | |
1857 | * @clk_id: DAI specific clock divider ID | |
1858 | * @div: new clock divisor. | |
1859 | * | |
1860 | * Configures the clock dividers. This is used to derive the best DAI bit and | |
1861 | * frame clocks from the system or master clock. It's best to set the DAI bit | |
1862 | * and frame clocks as low as possible to save system power. | |
1863 | */ | |
1864 | int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai, | |
1865 | int div_id, int div) | |
1866 | { | |
dee89c4d MB |
1867 | if (dai->ops.set_clkdiv) |
1868 | return dai->ops.set_clkdiv(dai, div_id, div); | |
8c6529db LG |
1869 | else |
1870 | return -EINVAL; | |
1871 | } | |
1872 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv); | |
1873 | ||
1874 | /** | |
1875 | * snd_soc_dai_set_pll - configure DAI PLL. | |
1876 | * @dai: DAI | |
1877 | * @pll_id: DAI specific PLL ID | |
1878 | * @freq_in: PLL input clock frequency in Hz | |
1879 | * @freq_out: requested PLL output clock frequency in Hz | |
1880 | * | |
1881 | * Configures and enables PLL to generate output clock based on input clock. | |
1882 | */ | |
1883 | int snd_soc_dai_set_pll(struct snd_soc_dai *dai, | |
1884 | int pll_id, unsigned int freq_in, unsigned int freq_out) | |
1885 | { | |
dee89c4d MB |
1886 | if (dai->ops.set_pll) |
1887 | return dai->ops.set_pll(dai, pll_id, freq_in, freq_out); | |
8c6529db LG |
1888 | else |
1889 | return -EINVAL; | |
1890 | } | |
1891 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll); | |
1892 | ||
1893 | /** | |
1894 | * snd_soc_dai_set_fmt - configure DAI hardware audio format. | |
1895 | * @dai: DAI | |
8c6529db LG |
1896 | * @fmt: SND_SOC_DAIFMT_ format value. |
1897 | * | |
1898 | * Configures the DAI hardware format and clocking. | |
1899 | */ | |
1900 | int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) | |
1901 | { | |
dee89c4d MB |
1902 | if (dai->ops.set_fmt) |
1903 | return dai->ops.set_fmt(dai, fmt); | |
8c6529db LG |
1904 | else |
1905 | return -EINVAL; | |
1906 | } | |
1907 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt); | |
1908 | ||
1909 | /** | |
1910 | * snd_soc_dai_set_tdm_slot - configure DAI TDM. | |
1911 | * @dai: DAI | |
1912 | * @mask: DAI specific mask representing used slots. | |
1913 | * @slots: Number of slots in use. | |
1914 | * | |
1915 | * Configures a DAI for TDM operation. Both mask and slots are codec and DAI | |
1916 | * specific. | |
1917 | */ | |
1918 | int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai, | |
1919 | unsigned int mask, int slots) | |
1920 | { | |
dee89c4d MB |
1921 | if (dai->ops.set_sysclk) |
1922 | return dai->ops.set_tdm_slot(dai, mask, slots); | |
8c6529db LG |
1923 | else |
1924 | return -EINVAL; | |
1925 | } | |
1926 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot); | |
1927 | ||
1928 | /** | |
1929 | * snd_soc_dai_set_tristate - configure DAI system or master clock. | |
1930 | * @dai: DAI | |
1931 | * @tristate: tristate enable | |
1932 | * | |
1933 | * Tristates the DAI so that others can use it. | |
1934 | */ | |
1935 | int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate) | |
1936 | { | |
dee89c4d MB |
1937 | if (dai->ops.set_sysclk) |
1938 | return dai->ops.set_tristate(dai, tristate); | |
8c6529db LG |
1939 | else |
1940 | return -EINVAL; | |
1941 | } | |
1942 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate); | |
1943 | ||
1944 | /** | |
1945 | * snd_soc_dai_digital_mute - configure DAI system or master clock. | |
1946 | * @dai: DAI | |
1947 | * @mute: mute enable | |
1948 | * | |
1949 | * Mutes the DAI DAC. | |
1950 | */ | |
1951 | int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute) | |
1952 | { | |
dee89c4d MB |
1953 | if (dai->ops.digital_mute) |
1954 | return dai->ops.digital_mute(dai, mute); | |
8c6529db LG |
1955 | else |
1956 | return -EINVAL; | |
1957 | } | |
1958 | EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute); | |
1959 | ||
db2a4165 FM |
1960 | static int __devinit snd_soc_init(void) |
1961 | { | |
384c89e2 MB |
1962 | #ifdef CONFIG_DEBUG_FS |
1963 | debugfs_root = debugfs_create_dir("asoc", NULL); | |
1964 | if (IS_ERR(debugfs_root) || !debugfs_root) { | |
1965 | printk(KERN_WARNING | |
1966 | "ASoC: Failed to create debugfs directory\n"); | |
1967 | debugfs_root = NULL; | |
1968 | } | |
1969 | #endif | |
1970 | ||
db2a4165 FM |
1971 | return platform_driver_register(&soc_driver); |
1972 | } | |
1973 | ||
7d8c16a6 | 1974 | static void __exit snd_soc_exit(void) |
db2a4165 | 1975 | { |
384c89e2 MB |
1976 | #ifdef CONFIG_DEBUG_FS |
1977 | debugfs_remove_recursive(debugfs_root); | |
1978 | #endif | |
3ff3f64b | 1979 | platform_driver_unregister(&soc_driver); |
db2a4165 FM |
1980 | } |
1981 | ||
1982 | module_init(snd_soc_init); | |
1983 | module_exit(snd_soc_exit); | |
1984 | ||
1985 | /* Module information */ | |
d331124d | 1986 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
db2a4165 FM |
1987 | MODULE_DESCRIPTION("ALSA SoC Core"); |
1988 | MODULE_LICENSE("GPL"); | |
8b45a209 | 1989 | MODULE_ALIAS("platform:soc-audio"); |