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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; | |
112 | struct snd_pcm_runtime *runtime = substream->runtime; | |
cb666e5b | 113 | struct snd_soc_dai_link *machine = rtd->dai; |
db2a4165 | 114 | struct snd_soc_platform *platform = socdev->platform; |
3c4b266f LG |
115 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
116 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
117 | int ret = 0; |
118 | ||
119 | mutex_lock(&pcm_mutex); | |
120 | ||
121 | /* startup the audio subsystem */ | |
cb666e5b | 122 | if (cpu_dai->ops.startup) { |
dee89c4d | 123 | ret = cpu_dai->ops.startup(substream, cpu_dai); |
db2a4165 FM |
124 | if (ret < 0) { |
125 | printk(KERN_ERR "asoc: can't open interface %s\n", | |
cb666e5b | 126 | cpu_dai->name); |
db2a4165 FM |
127 | goto out; |
128 | } | |
129 | } | |
130 | ||
131 | if (platform->pcm_ops->open) { | |
132 | ret = platform->pcm_ops->open(substream); | |
133 | if (ret < 0) { | |
134 | printk(KERN_ERR "asoc: can't open platform %s\n", platform->name); | |
135 | goto platform_err; | |
136 | } | |
137 | } | |
138 | ||
cb666e5b | 139 | if (codec_dai->ops.startup) { |
dee89c4d | 140 | ret = codec_dai->ops.startup(substream, codec_dai); |
db2a4165 | 141 | if (ret < 0) { |
cb666e5b LG |
142 | printk(KERN_ERR "asoc: can't open codec %s\n", |
143 | codec_dai->name); | |
144 | goto codec_dai_err; | |
db2a4165 FM |
145 | } |
146 | } | |
147 | ||
cb666e5b LG |
148 | if (machine->ops && machine->ops->startup) { |
149 | ret = machine->ops->startup(substream); | |
db2a4165 | 150 | if (ret < 0) { |
cb666e5b LG |
151 | printk(KERN_ERR "asoc: %s startup failed\n", machine->name); |
152 | goto machine_err; | |
db2a4165 FM |
153 | } |
154 | } | |
155 | ||
db2a4165 FM |
156 | /* Check that the codec and cpu DAI's are compatible */ |
157 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
158 | runtime->hw.rate_min = | |
3ff3f64b MB |
159 | max(codec_dai->playback.rate_min, |
160 | cpu_dai->playback.rate_min); | |
db2a4165 | 161 | runtime->hw.rate_max = |
3ff3f64b MB |
162 | min(codec_dai->playback.rate_max, |
163 | cpu_dai->playback.rate_max); | |
db2a4165 | 164 | runtime->hw.channels_min = |
cb666e5b LG |
165 | max(codec_dai->playback.channels_min, |
166 | cpu_dai->playback.channels_min); | |
db2a4165 | 167 | runtime->hw.channels_max = |
cb666e5b LG |
168 | min(codec_dai->playback.channels_max, |
169 | cpu_dai->playback.channels_max); | |
170 | runtime->hw.formats = | |
171 | codec_dai->playback.formats & cpu_dai->playback.formats; | |
172 | runtime->hw.rates = | |
173 | codec_dai->playback.rates & cpu_dai->playback.rates; | |
db2a4165 FM |
174 | } else { |
175 | runtime->hw.rate_min = | |
3ff3f64b MB |
176 | max(codec_dai->capture.rate_min, |
177 | cpu_dai->capture.rate_min); | |
db2a4165 | 178 | runtime->hw.rate_max = |
3ff3f64b MB |
179 | min(codec_dai->capture.rate_max, |
180 | cpu_dai->capture.rate_max); | |
db2a4165 | 181 | runtime->hw.channels_min = |
cb666e5b LG |
182 | max(codec_dai->capture.channels_min, |
183 | cpu_dai->capture.channels_min); | |
db2a4165 | 184 | runtime->hw.channels_max = |
cb666e5b LG |
185 | min(codec_dai->capture.channels_max, |
186 | cpu_dai->capture.channels_max); | |
187 | runtime->hw.formats = | |
188 | codec_dai->capture.formats & cpu_dai->capture.formats; | |
189 | runtime->hw.rates = | |
190 | codec_dai->capture.rates & cpu_dai->capture.rates; | |
db2a4165 FM |
191 | } |
192 | ||
193 | snd_pcm_limit_hw_rates(runtime); | |
194 | if (!runtime->hw.rates) { | |
195 | printk(KERN_ERR "asoc: %s <-> %s No matching rates\n", | |
cb666e5b LG |
196 | codec_dai->name, cpu_dai->name); |
197 | goto machine_err; | |
db2a4165 FM |
198 | } |
199 | if (!runtime->hw.formats) { | |
200 | printk(KERN_ERR "asoc: %s <-> %s No matching formats\n", | |
cb666e5b LG |
201 | codec_dai->name, cpu_dai->name); |
202 | goto machine_err; | |
db2a4165 FM |
203 | } |
204 | if (!runtime->hw.channels_min || !runtime->hw.channels_max) { | |
205 | printk(KERN_ERR "asoc: %s <-> %s No matching channels\n", | |
cb666e5b LG |
206 | codec_dai->name, cpu_dai->name); |
207 | goto machine_err; | |
db2a4165 FM |
208 | } |
209 | ||
f24368c2 MB |
210 | pr_debug("asoc: %s <-> %s info:\n", codec_dai->name, cpu_dai->name); |
211 | pr_debug("asoc: rate mask 0x%x\n", runtime->hw.rates); | |
212 | pr_debug("asoc: min ch %d max ch %d\n", runtime->hw.channels_min, | |
213 | runtime->hw.channels_max); | |
214 | pr_debug("asoc: min rate %d max rate %d\n", runtime->hw.rate_min, | |
215 | runtime->hw.rate_max); | |
db2a4165 | 216 | |
db2a4165 | 217 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
cb666e5b | 218 | cpu_dai->playback.active = codec_dai->playback.active = 1; |
db2a4165 | 219 | else |
cb666e5b LG |
220 | cpu_dai->capture.active = codec_dai->capture.active = 1; |
221 | cpu_dai->active = codec_dai->active = 1; | |
222 | cpu_dai->runtime = runtime; | |
db2a4165 FM |
223 | socdev->codec->active++; |
224 | mutex_unlock(&pcm_mutex); | |
225 | return 0; | |
226 | ||
cb666e5b | 227 | machine_err: |
db2a4165 FM |
228 | if (machine->ops && machine->ops->shutdown) |
229 | machine->ops->shutdown(substream); | |
230 | ||
cb666e5b | 231 | codec_dai_err: |
db2a4165 FM |
232 | if (platform->pcm_ops->close) |
233 | platform->pcm_ops->close(substream); | |
234 | ||
235 | platform_err: | |
cb666e5b | 236 | if (cpu_dai->ops.shutdown) |
dee89c4d | 237 | cpu_dai->ops.shutdown(substream, cpu_dai); |
db2a4165 FM |
238 | out: |
239 | mutex_unlock(&pcm_mutex); | |
240 | return ret; | |
241 | } | |
242 | ||
243 | /* | |
3a4fa0a2 | 244 | * Power down the audio subsystem pmdown_time msecs after close is called. |
db2a4165 FM |
245 | * This is to ensure there are no pops or clicks in between any music tracks |
246 | * due to DAPM power cycling. | |
247 | */ | |
4484bb2e | 248 | static void close_delayed_work(struct work_struct *work) |
db2a4165 | 249 | { |
4484bb2e AM |
250 | struct snd_soc_device *socdev = |
251 | container_of(work, struct snd_soc_device, delayed_work.work); | |
db2a4165 | 252 | struct snd_soc_codec *codec = socdev->codec; |
3c4b266f | 253 | struct snd_soc_dai *codec_dai; |
db2a4165 FM |
254 | int i; |
255 | ||
256 | mutex_lock(&pcm_mutex); | |
3ff3f64b | 257 | for (i = 0; i < codec->num_dai; i++) { |
db2a4165 FM |
258 | codec_dai = &codec->dai[i]; |
259 | ||
f24368c2 MB |
260 | pr_debug("pop wq checking: %s status: %s waiting: %s\n", |
261 | codec_dai->playback.stream_name, | |
262 | codec_dai->playback.active ? "active" : "inactive", | |
263 | codec_dai->pop_wait ? "yes" : "no"); | |
db2a4165 FM |
264 | |
265 | /* are we waiting on this codec DAI stream */ | |
266 | if (codec_dai->pop_wait == 1) { | |
267 | ||
0be9898a | 268 | /* Reduce power if no longer active */ |
3c1c47e0 | 269 | if (codec->active == 0) { |
f24368c2 MB |
270 | pr_debug("pop wq D1 %s %s\n", codec->name, |
271 | codec_dai->playback.stream_name); | |
0be9898a MB |
272 | snd_soc_dapm_set_bias_level(socdev, |
273 | SND_SOC_BIAS_PREPARE); | |
3c1c47e0 LG |
274 | } |
275 | ||
db2a4165 | 276 | codec_dai->pop_wait = 0; |
0b4d221b LG |
277 | snd_soc_dapm_stream_event(codec, |
278 | codec_dai->playback.stream_name, | |
db2a4165 FM |
279 | SND_SOC_DAPM_STREAM_STOP); |
280 | ||
0be9898a | 281 | /* Fall into standby if no longer active */ |
db2a4165 | 282 | if (codec->active == 0) { |
f24368c2 MB |
283 | pr_debug("pop wq D3 %s %s\n", codec->name, |
284 | codec_dai->playback.stream_name); | |
0be9898a MB |
285 | snd_soc_dapm_set_bias_level(socdev, |
286 | SND_SOC_BIAS_STANDBY); | |
db2a4165 FM |
287 | } |
288 | } | |
289 | } | |
290 | mutex_unlock(&pcm_mutex); | |
291 | } | |
292 | ||
293 | /* | |
294 | * Called by ALSA when a PCM substream is closed. Private data can be | |
295 | * freed here. The cpu DAI, codec DAI, machine and platform are also | |
296 | * shutdown. | |
297 | */ | |
298 | static int soc_codec_close(struct snd_pcm_substream *substream) | |
299 | { | |
300 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
301 | struct snd_soc_device *socdev = rtd->socdev; | |
cb666e5b | 302 | struct snd_soc_dai_link *machine = rtd->dai; |
db2a4165 | 303 | struct snd_soc_platform *platform = socdev->platform; |
3c4b266f LG |
304 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
305 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
306 | struct snd_soc_codec *codec = socdev->codec; |
307 | ||
308 | mutex_lock(&pcm_mutex); | |
309 | ||
310 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
cb666e5b | 311 | cpu_dai->playback.active = codec_dai->playback.active = 0; |
db2a4165 | 312 | else |
cb666e5b | 313 | cpu_dai->capture.active = codec_dai->capture.active = 0; |
db2a4165 | 314 | |
cb666e5b LG |
315 | if (codec_dai->playback.active == 0 && |
316 | codec_dai->capture.active == 0) { | |
317 | cpu_dai->active = codec_dai->active = 0; | |
db2a4165 FM |
318 | } |
319 | codec->active--; | |
320 | ||
6010b2da MB |
321 | /* Muting the DAC suppresses artifacts caused during digital |
322 | * shutdown, for example from stopping clocks. | |
323 | */ | |
324 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
325 | snd_soc_dai_digital_mute(codec_dai, 1); | |
326 | ||
cb666e5b | 327 | if (cpu_dai->ops.shutdown) |
dee89c4d | 328 | cpu_dai->ops.shutdown(substream, cpu_dai); |
db2a4165 | 329 | |
cb666e5b | 330 | if (codec_dai->ops.shutdown) |
dee89c4d | 331 | codec_dai->ops.shutdown(substream, codec_dai); |
db2a4165 FM |
332 | |
333 | if (machine->ops && machine->ops->shutdown) | |
334 | machine->ops->shutdown(substream); | |
335 | ||
336 | if (platform->pcm_ops->close) | |
337 | platform->pcm_ops->close(substream); | |
cb666e5b | 338 | cpu_dai->runtime = NULL; |
db2a4165 FM |
339 | |
340 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
341 | /* start delayed pop wq here for playback streams */ | |
cb666e5b | 342 | codec_dai->pop_wait = 1; |
4bb09523 | 343 | schedule_delayed_work(&socdev->delayed_work, |
db2a4165 FM |
344 | msecs_to_jiffies(pmdown_time)); |
345 | } else { | |
346 | /* capture streams can be powered down now */ | |
cb666e5b | 347 | snd_soc_dapm_stream_event(codec, |
0b4d221b LG |
348 | codec_dai->capture.stream_name, |
349 | SND_SOC_DAPM_STREAM_STOP); | |
db2a4165 | 350 | |
0b4d221b | 351 | if (codec->active == 0 && codec_dai->pop_wait == 0) |
0be9898a MB |
352 | snd_soc_dapm_set_bias_level(socdev, |
353 | SND_SOC_BIAS_STANDBY); | |
db2a4165 FM |
354 | } |
355 | ||
356 | mutex_unlock(&pcm_mutex); | |
357 | return 0; | |
358 | } | |
359 | ||
360 | /* | |
361 | * Called by ALSA when the PCM substream is prepared, can set format, sample | |
362 | * rate, etc. This function is non atomic and can be called multiple times, | |
363 | * it can refer to the runtime info. | |
364 | */ | |
365 | static int soc_pcm_prepare(struct snd_pcm_substream *substream) | |
366 | { | |
367 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
368 | struct snd_soc_device *socdev = rtd->socdev; | |
cb666e5b | 369 | struct snd_soc_dai_link *machine = rtd->dai; |
db2a4165 | 370 | struct snd_soc_platform *platform = socdev->platform; |
3c4b266f LG |
371 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
372 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
373 | struct snd_soc_codec *codec = socdev->codec; |
374 | int ret = 0; | |
375 | ||
376 | mutex_lock(&pcm_mutex); | |
cb666e5b LG |
377 | |
378 | if (machine->ops && machine->ops->prepare) { | |
379 | ret = machine->ops->prepare(substream); | |
380 | if (ret < 0) { | |
381 | printk(KERN_ERR "asoc: machine prepare error\n"); | |
382 | goto out; | |
383 | } | |
384 | } | |
385 | ||
db2a4165 FM |
386 | if (platform->pcm_ops->prepare) { |
387 | ret = platform->pcm_ops->prepare(substream); | |
a71a468a LG |
388 | if (ret < 0) { |
389 | printk(KERN_ERR "asoc: platform prepare error\n"); | |
db2a4165 | 390 | goto out; |
a71a468a | 391 | } |
db2a4165 FM |
392 | } |
393 | ||
cb666e5b | 394 | if (codec_dai->ops.prepare) { |
dee89c4d | 395 | ret = codec_dai->ops.prepare(substream, codec_dai); |
a71a468a LG |
396 | if (ret < 0) { |
397 | printk(KERN_ERR "asoc: codec DAI prepare error\n"); | |
db2a4165 | 398 | goto out; |
a71a468a | 399 | } |
db2a4165 FM |
400 | } |
401 | ||
cb666e5b | 402 | if (cpu_dai->ops.prepare) { |
dee89c4d | 403 | ret = cpu_dai->ops.prepare(substream, cpu_dai); |
cb666e5b LG |
404 | if (ret < 0) { |
405 | printk(KERN_ERR "asoc: cpu DAI prepare error\n"); | |
406 | goto out; | |
407 | } | |
408 | } | |
db2a4165 | 409 | |
d45f6219 MB |
410 | /* cancel any delayed stream shutdown that is pending */ |
411 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
412 | codec_dai->pop_wait) { | |
413 | codec_dai->pop_wait = 0; | |
414 | cancel_delayed_work(&socdev->delayed_work); | |
415 | } | |
db2a4165 | 416 | |
d45f6219 MB |
417 | /* do we need to power up codec */ |
418 | if (codec->bias_level != SND_SOC_BIAS_ON) { | |
419 | snd_soc_dapm_set_bias_level(socdev, | |
420 | SND_SOC_BIAS_PREPARE); | |
db2a4165 | 421 | |
d45f6219 MB |
422 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
423 | snd_soc_dapm_stream_event(codec, | |
cb666e5b | 424 | codec_dai->playback.stream_name, |
db2a4165 | 425 | SND_SOC_DAPM_STREAM_START); |
d45f6219 MB |
426 | else |
427 | snd_soc_dapm_stream_event(codec, | |
cb666e5b | 428 | codec_dai->capture.stream_name, |
db2a4165 FM |
429 | SND_SOC_DAPM_STREAM_START); |
430 | ||
d45f6219 MB |
431 | snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_ON); |
432 | snd_soc_dai_digital_mute(codec_dai, 0); | |
db2a4165 | 433 | |
d45f6219 MB |
434 | } else { |
435 | /* codec already powered - power on widgets */ | |
436 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
437 | snd_soc_dapm_stream_event(codec, | |
cb666e5b | 438 | codec_dai->playback.stream_name, |
db2a4165 | 439 | SND_SOC_DAPM_STREAM_START); |
d45f6219 MB |
440 | else |
441 | snd_soc_dapm_stream_event(codec, | |
cb666e5b | 442 | codec_dai->capture.stream_name, |
db2a4165 | 443 | SND_SOC_DAPM_STREAM_START); |
8c6529db | 444 | |
d45f6219 | 445 | snd_soc_dai_digital_mute(codec_dai, 0); |
db2a4165 FM |
446 | } |
447 | ||
448 | out: | |
449 | mutex_unlock(&pcm_mutex); | |
450 | return ret; | |
451 | } | |
452 | ||
453 | /* | |
454 | * Called by ALSA when the hardware params are set by application. This | |
455 | * function can also be called multiple times and can allocate buffers | |
456 | * (using snd_pcm_lib_* ). It's non-atomic. | |
457 | */ | |
458 | static int soc_pcm_hw_params(struct snd_pcm_substream *substream, | |
459 | struct snd_pcm_hw_params *params) | |
460 | { | |
461 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
462 | struct snd_soc_device *socdev = rtd->socdev; | |
cb666e5b | 463 | struct snd_soc_dai_link *machine = rtd->dai; |
db2a4165 | 464 | struct snd_soc_platform *platform = socdev->platform; |
3c4b266f LG |
465 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
466 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
467 | int ret = 0; |
468 | ||
469 | mutex_lock(&pcm_mutex); | |
470 | ||
cb666e5b LG |
471 | if (machine->ops && machine->ops->hw_params) { |
472 | ret = machine->ops->hw_params(substream, params); | |
473 | if (ret < 0) { | |
474 | printk(KERN_ERR "asoc: machine hw_params failed\n"); | |
db2a4165 | 475 | goto out; |
cb666e5b | 476 | } |
db2a4165 FM |
477 | } |
478 | ||
cb666e5b | 479 | if (codec_dai->ops.hw_params) { |
dee89c4d | 480 | ret = codec_dai->ops.hw_params(substream, params, codec_dai); |
db2a4165 FM |
481 | if (ret < 0) { |
482 | printk(KERN_ERR "asoc: can't set codec %s hw params\n", | |
cb666e5b LG |
483 | codec_dai->name); |
484 | goto codec_err; | |
db2a4165 FM |
485 | } |
486 | } | |
487 | ||
cb666e5b | 488 | if (cpu_dai->ops.hw_params) { |
dee89c4d | 489 | ret = cpu_dai->ops.hw_params(substream, params, cpu_dai); |
db2a4165 | 490 | if (ret < 0) { |
3ff3f64b | 491 | printk(KERN_ERR "asoc: interface %s hw params failed\n", |
cb666e5b | 492 | cpu_dai->name); |
db2a4165 FM |
493 | goto interface_err; |
494 | } | |
495 | } | |
496 | ||
497 | if (platform->pcm_ops->hw_params) { | |
498 | ret = platform->pcm_ops->hw_params(substream, params); | |
499 | if (ret < 0) { | |
3ff3f64b | 500 | printk(KERN_ERR "asoc: platform %s hw params failed\n", |
db2a4165 FM |
501 | platform->name); |
502 | goto platform_err; | |
503 | } | |
504 | } | |
505 | ||
db2a4165 FM |
506 | out: |
507 | mutex_unlock(&pcm_mutex); | |
508 | return ret; | |
509 | ||
db2a4165 | 510 | platform_err: |
cb666e5b | 511 | if (cpu_dai->ops.hw_free) |
dee89c4d | 512 | cpu_dai->ops.hw_free(substream, cpu_dai); |
db2a4165 FM |
513 | |
514 | interface_err: | |
cb666e5b | 515 | if (codec_dai->ops.hw_free) |
dee89c4d | 516 | codec_dai->ops.hw_free(substream, codec_dai); |
cb666e5b LG |
517 | |
518 | codec_err: | |
3ff3f64b | 519 | if (machine->ops && machine->ops->hw_free) |
cb666e5b | 520 | machine->ops->hw_free(substream); |
db2a4165 FM |
521 | |
522 | mutex_unlock(&pcm_mutex); | |
523 | return ret; | |
524 | } | |
525 | ||
526 | /* | |
527 | * Free's resources allocated by hw_params, can be called multiple times | |
528 | */ | |
529 | static int soc_pcm_hw_free(struct snd_pcm_substream *substream) | |
530 | { | |
531 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
532 | struct snd_soc_device *socdev = rtd->socdev; | |
cb666e5b | 533 | struct snd_soc_dai_link *machine = rtd->dai; |
db2a4165 | 534 | struct snd_soc_platform *platform = socdev->platform; |
3c4b266f LG |
535 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
536 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 | 537 | struct snd_soc_codec *codec = socdev->codec; |
db2a4165 FM |
538 | |
539 | mutex_lock(&pcm_mutex); | |
540 | ||
541 | /* apply codec digital mute */ | |
8c6529db LG |
542 | if (!codec->active) |
543 | snd_soc_dai_digital_mute(codec_dai, 1); | |
db2a4165 FM |
544 | |
545 | /* free any machine hw params */ | |
546 | if (machine->ops && machine->ops->hw_free) | |
547 | machine->ops->hw_free(substream); | |
548 | ||
549 | /* free any DMA resources */ | |
550 | if (platform->pcm_ops->hw_free) | |
551 | platform->pcm_ops->hw_free(substream); | |
552 | ||
553 | /* now free hw params for the DAI's */ | |
cb666e5b | 554 | if (codec_dai->ops.hw_free) |
dee89c4d | 555 | codec_dai->ops.hw_free(substream, codec_dai); |
db2a4165 | 556 | |
cb666e5b | 557 | if (cpu_dai->ops.hw_free) |
dee89c4d | 558 | cpu_dai->ops.hw_free(substream, cpu_dai); |
db2a4165 FM |
559 | |
560 | mutex_unlock(&pcm_mutex); | |
561 | return 0; | |
562 | } | |
563 | ||
564 | static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd) | |
565 | { | |
566 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
567 | struct snd_soc_device *socdev = rtd->socdev; | |
cb666e5b | 568 | struct snd_soc_dai_link *machine = rtd->dai; |
db2a4165 | 569 | struct snd_soc_platform *platform = socdev->platform; |
3c4b266f LG |
570 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
571 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
572 | int ret; |
573 | ||
cb666e5b | 574 | if (codec_dai->ops.trigger) { |
dee89c4d | 575 | ret = codec_dai->ops.trigger(substream, cmd, codec_dai); |
db2a4165 FM |
576 | if (ret < 0) |
577 | return ret; | |
578 | } | |
579 | ||
580 | if (platform->pcm_ops->trigger) { | |
581 | ret = platform->pcm_ops->trigger(substream, cmd); | |
582 | if (ret < 0) | |
583 | return ret; | |
584 | } | |
585 | ||
cb666e5b | 586 | if (cpu_dai->ops.trigger) { |
dee89c4d | 587 | ret = cpu_dai->ops.trigger(substream, cmd, cpu_dai); |
db2a4165 FM |
588 | if (ret < 0) |
589 | return ret; | |
590 | } | |
591 | return 0; | |
592 | } | |
593 | ||
594 | /* ASoC PCM operations */ | |
595 | static struct snd_pcm_ops soc_pcm_ops = { | |
596 | .open = soc_pcm_open, | |
597 | .close = soc_codec_close, | |
598 | .hw_params = soc_pcm_hw_params, | |
599 | .hw_free = soc_pcm_hw_free, | |
600 | .prepare = soc_pcm_prepare, | |
601 | .trigger = soc_pcm_trigger, | |
602 | }; | |
603 | ||
604 | #ifdef CONFIG_PM | |
605 | /* powers down audio subsystem for suspend */ | |
606 | static int soc_suspend(struct platform_device *pdev, pm_message_t state) | |
607 | { | |
3ff3f64b | 608 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
87506549 | 609 | struct snd_soc_card *card = socdev->card; |
3ff3f64b MB |
610 | struct snd_soc_platform *platform = socdev->platform; |
611 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; | |
db2a4165 FM |
612 | struct snd_soc_codec *codec = socdev->codec; |
613 | int i; | |
614 | ||
6ed25978 AG |
615 | /* Due to the resume being scheduled into a workqueue we could |
616 | * suspend before that's finished - wait for it to complete. | |
617 | */ | |
618 | snd_power_lock(codec->card); | |
619 | snd_power_wait(codec->card, SNDRV_CTL_POWER_D0); | |
620 | snd_power_unlock(codec->card); | |
621 | ||
622 | /* we're going to block userspace touching us until resume completes */ | |
623 | snd_power_change_state(codec->card, SNDRV_CTL_POWER_D3hot); | |
624 | ||
db2a4165 | 625 | /* mute any active DAC's */ |
dee89c4d MB |
626 | for (i = 0; i < card->num_links; i++) { |
627 | struct snd_soc_dai *dai = card->dai_link[i].codec_dai; | |
628 | if (dai->ops.digital_mute && dai->playback.active) | |
629 | dai->ops.digital_mute(dai, 1); | |
db2a4165 FM |
630 | } |
631 | ||
4ccab3e7 | 632 | /* suspend all pcms */ |
87506549 MB |
633 | for (i = 0; i < card->num_links; i++) |
634 | snd_pcm_suspend_all(card->dai_link[i].pcm); | |
4ccab3e7 | 635 | |
87506549 MB |
636 | if (card->suspend_pre) |
637 | card->suspend_pre(pdev, state); | |
db2a4165 | 638 | |
87506549 MB |
639 | for (i = 0; i < card->num_links; i++) { |
640 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
3ba9e10a | 641 | if (cpu_dai->suspend && !cpu_dai->ac97_control) |
db2a4165 FM |
642 | cpu_dai->suspend(pdev, cpu_dai); |
643 | if (platform->suspend) | |
644 | platform->suspend(pdev, cpu_dai); | |
645 | } | |
646 | ||
647 | /* close any waiting streams and save state */ | |
965ac42c | 648 | run_delayed_work(&socdev->delayed_work); |
0be9898a | 649 | codec->suspend_bias_level = codec->bias_level; |
db2a4165 | 650 | |
3ff3f64b | 651 | for (i = 0; i < codec->num_dai; i++) { |
db2a4165 FM |
652 | char *stream = codec->dai[i].playback.stream_name; |
653 | if (stream != NULL) | |
654 | snd_soc_dapm_stream_event(codec, stream, | |
655 | SND_SOC_DAPM_STREAM_SUSPEND); | |
656 | stream = codec->dai[i].capture.stream_name; | |
657 | if (stream != NULL) | |
658 | snd_soc_dapm_stream_event(codec, stream, | |
659 | SND_SOC_DAPM_STREAM_SUSPEND); | |
660 | } | |
661 | ||
662 | if (codec_dev->suspend) | |
663 | codec_dev->suspend(pdev, state); | |
664 | ||
87506549 MB |
665 | for (i = 0; i < card->num_links; i++) { |
666 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
3ba9e10a | 667 | if (cpu_dai->suspend && cpu_dai->ac97_control) |
db2a4165 FM |
668 | cpu_dai->suspend(pdev, cpu_dai); |
669 | } | |
670 | ||
87506549 MB |
671 | if (card->suspend_post) |
672 | card->suspend_post(pdev, state); | |
db2a4165 FM |
673 | |
674 | return 0; | |
675 | } | |
676 | ||
6ed25978 AG |
677 | /* deferred resume work, so resume can complete before we finished |
678 | * setting our codec back up, which can be very slow on I2C | |
679 | */ | |
680 | static void soc_resume_deferred(struct work_struct *work) | |
db2a4165 | 681 | { |
6ed25978 AG |
682 | struct snd_soc_device *socdev = container_of(work, |
683 | struct snd_soc_device, | |
684 | deferred_resume_work); | |
87506549 | 685 | struct snd_soc_card *card = socdev->card; |
3ff3f64b MB |
686 | struct snd_soc_platform *platform = socdev->platform; |
687 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; | |
db2a4165 | 688 | struct snd_soc_codec *codec = socdev->codec; |
6ed25978 | 689 | struct platform_device *pdev = to_platform_device(socdev->dev); |
db2a4165 FM |
690 | int i; |
691 | ||
6ed25978 AG |
692 | /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time, |
693 | * so userspace apps are blocked from touching us | |
694 | */ | |
695 | ||
fde22f27 | 696 | dev_dbg(socdev->dev, "starting resume work\n"); |
6ed25978 | 697 | |
87506549 MB |
698 | if (card->resume_pre) |
699 | card->resume_pre(pdev); | |
db2a4165 | 700 | |
87506549 MB |
701 | for (i = 0; i < card->num_links; i++) { |
702 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
3ba9e10a | 703 | if (cpu_dai->resume && cpu_dai->ac97_control) |
db2a4165 FM |
704 | cpu_dai->resume(pdev, cpu_dai); |
705 | } | |
706 | ||
707 | if (codec_dev->resume) | |
708 | codec_dev->resume(pdev); | |
709 | ||
3ff3f64b MB |
710 | for (i = 0; i < codec->num_dai; i++) { |
711 | char *stream = codec->dai[i].playback.stream_name; | |
db2a4165 FM |
712 | if (stream != NULL) |
713 | snd_soc_dapm_stream_event(codec, stream, | |
714 | SND_SOC_DAPM_STREAM_RESUME); | |
715 | stream = codec->dai[i].capture.stream_name; | |
716 | if (stream != NULL) | |
717 | snd_soc_dapm_stream_event(codec, stream, | |
718 | SND_SOC_DAPM_STREAM_RESUME); | |
719 | } | |
720 | ||
3ff3f64b | 721 | /* unmute any active DACs */ |
dee89c4d MB |
722 | for (i = 0; i < card->num_links; i++) { |
723 | struct snd_soc_dai *dai = card->dai_link[i].codec_dai; | |
724 | if (dai->ops.digital_mute && dai->playback.active) | |
725 | dai->ops.digital_mute(dai, 0); | |
db2a4165 FM |
726 | } |
727 | ||
87506549 MB |
728 | for (i = 0; i < card->num_links; i++) { |
729 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
3ba9e10a | 730 | if (cpu_dai->resume && !cpu_dai->ac97_control) |
db2a4165 FM |
731 | cpu_dai->resume(pdev, cpu_dai); |
732 | if (platform->resume) | |
733 | platform->resume(pdev, cpu_dai); | |
734 | } | |
735 | ||
87506549 MB |
736 | if (card->resume_post) |
737 | card->resume_post(pdev); | |
db2a4165 | 738 | |
fde22f27 | 739 | dev_dbg(socdev->dev, "resume work completed\n"); |
6ed25978 AG |
740 | |
741 | /* userspace can access us now we are back as we were before */ | |
742 | snd_power_change_state(codec->card, SNDRV_CTL_POWER_D0); | |
743 | } | |
744 | ||
745 | /* powers up audio subsystem after a suspend */ | |
746 | static int soc_resume(struct platform_device *pdev) | |
747 | { | |
748 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
749 | ||
fde22f27 | 750 | dev_dbg(socdev->dev, "scheduling resume work\n"); |
6ed25978 AG |
751 | |
752 | if (!schedule_work(&socdev->deferred_resume_work)) | |
fde22f27 | 753 | dev_err(socdev->dev, "resume work item may be lost\n"); |
6ed25978 | 754 | |
db2a4165 FM |
755 | return 0; |
756 | } | |
757 | ||
758 | #else | |
759 | #define soc_suspend NULL | |
760 | #define soc_resume NULL | |
761 | #endif | |
762 | ||
763 | /* probes a new socdev */ | |
764 | static int soc_probe(struct platform_device *pdev) | |
765 | { | |
766 | int ret = 0, i; | |
767 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
87506549 | 768 | struct snd_soc_card *card = socdev->card; |
db2a4165 FM |
769 | struct snd_soc_platform *platform = socdev->platform; |
770 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; | |
771 | ||
87506549 MB |
772 | if (card->probe) { |
773 | ret = card->probe(pdev); | |
3ff3f64b | 774 | if (ret < 0) |
db2a4165 FM |
775 | return ret; |
776 | } | |
777 | ||
87506549 MB |
778 | for (i = 0; i < card->num_links; i++) { |
779 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
db2a4165 | 780 | if (cpu_dai->probe) { |
bdb92876 | 781 | ret = cpu_dai->probe(pdev, cpu_dai); |
3ff3f64b | 782 | if (ret < 0) |
db2a4165 FM |
783 | goto cpu_dai_err; |
784 | } | |
785 | } | |
786 | ||
787 | if (codec_dev->probe) { | |
788 | ret = codec_dev->probe(pdev); | |
3ff3f64b | 789 | if (ret < 0) |
db2a4165 FM |
790 | goto cpu_dai_err; |
791 | } | |
792 | ||
793 | if (platform->probe) { | |
794 | ret = platform->probe(pdev); | |
3ff3f64b | 795 | if (ret < 0) |
db2a4165 FM |
796 | goto platform_err; |
797 | } | |
798 | ||
799 | /* DAPM stream work */ | |
4484bb2e | 800 | INIT_DELAYED_WORK(&socdev->delayed_work, close_delayed_work); |
1301a964 | 801 | #ifdef CONFIG_PM |
6ed25978 AG |
802 | /* deferred resume work */ |
803 | INIT_WORK(&socdev->deferred_resume_work, soc_resume_deferred); | |
1301a964 | 804 | #endif |
6ed25978 | 805 | |
db2a4165 FM |
806 | return 0; |
807 | ||
db2a4165 FM |
808 | platform_err: |
809 | if (codec_dev->remove) | |
810 | codec_dev->remove(pdev); | |
811 | ||
812 | cpu_dai_err: | |
18b9b3d9 | 813 | for (i--; i >= 0; i--) { |
87506549 | 814 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; |
db2a4165 | 815 | if (cpu_dai->remove) |
bdb92876 | 816 | cpu_dai->remove(pdev, cpu_dai); |
db2a4165 FM |
817 | } |
818 | ||
87506549 MB |
819 | if (card->remove) |
820 | card->remove(pdev); | |
db2a4165 FM |
821 | |
822 | return ret; | |
823 | } | |
824 | ||
825 | /* removes a socdev */ | |
826 | static int soc_remove(struct platform_device *pdev) | |
827 | { | |
828 | int i; | |
829 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
87506549 | 830 | struct snd_soc_card *card = socdev->card; |
db2a4165 FM |
831 | struct snd_soc_platform *platform = socdev->platform; |
832 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; | |
833 | ||
965ac42c LG |
834 | run_delayed_work(&socdev->delayed_work); |
835 | ||
db2a4165 FM |
836 | if (platform->remove) |
837 | platform->remove(pdev); | |
838 | ||
839 | if (codec_dev->remove) | |
840 | codec_dev->remove(pdev); | |
841 | ||
87506549 MB |
842 | for (i = 0; i < card->num_links; i++) { |
843 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
db2a4165 | 844 | if (cpu_dai->remove) |
bdb92876 | 845 | cpu_dai->remove(pdev, cpu_dai); |
db2a4165 FM |
846 | } |
847 | ||
87506549 MB |
848 | if (card->remove) |
849 | card->remove(pdev); | |
db2a4165 FM |
850 | |
851 | return 0; | |
852 | } | |
853 | ||
854 | /* ASoC platform driver */ | |
855 | static struct platform_driver soc_driver = { | |
856 | .driver = { | |
857 | .name = "soc-audio", | |
8b45a209 | 858 | .owner = THIS_MODULE, |
db2a4165 FM |
859 | }, |
860 | .probe = soc_probe, | |
861 | .remove = soc_remove, | |
862 | .suspend = soc_suspend, | |
863 | .resume = soc_resume, | |
864 | }; | |
865 | ||
866 | /* create a new pcm */ | |
867 | static int soc_new_pcm(struct snd_soc_device *socdev, | |
868 | struct snd_soc_dai_link *dai_link, int num) | |
869 | { | |
870 | struct snd_soc_codec *codec = socdev->codec; | |
3c4b266f LG |
871 | struct snd_soc_dai *codec_dai = dai_link->codec_dai; |
872 | struct snd_soc_dai *cpu_dai = dai_link->cpu_dai; | |
db2a4165 FM |
873 | struct snd_soc_pcm_runtime *rtd; |
874 | struct snd_pcm *pcm; | |
875 | char new_name[64]; | |
876 | int ret = 0, playback = 0, capture = 0; | |
877 | ||
878 | rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime), GFP_KERNEL); | |
879 | if (rtd == NULL) | |
880 | return -ENOMEM; | |
cb666e5b LG |
881 | |
882 | rtd->dai = dai_link; | |
db2a4165 | 883 | rtd->socdev = socdev; |
cb666e5b | 884 | codec_dai->codec = socdev->codec; |
db2a4165 FM |
885 | |
886 | /* check client and interface hw capabilities */ | |
3ba9e10a MB |
887 | sprintf(new_name, "%s %s-%d", dai_link->stream_name, codec_dai->name, |
888 | num); | |
db2a4165 FM |
889 | |
890 | if (codec_dai->playback.channels_min) | |
891 | playback = 1; | |
892 | if (codec_dai->capture.channels_min) | |
893 | capture = 1; | |
894 | ||
895 | ret = snd_pcm_new(codec->card, new_name, codec->pcm_devs++, playback, | |
896 | capture, &pcm); | |
897 | if (ret < 0) { | |
3ff3f64b MB |
898 | printk(KERN_ERR "asoc: can't create pcm for codec %s\n", |
899 | codec->name); | |
db2a4165 FM |
900 | kfree(rtd); |
901 | return ret; | |
902 | } | |
903 | ||
4ccab3e7 | 904 | dai_link->pcm = pcm; |
db2a4165 FM |
905 | pcm->private_data = rtd; |
906 | soc_pcm_ops.mmap = socdev->platform->pcm_ops->mmap; | |
907 | soc_pcm_ops.pointer = socdev->platform->pcm_ops->pointer; | |
908 | soc_pcm_ops.ioctl = socdev->platform->pcm_ops->ioctl; | |
909 | soc_pcm_ops.copy = socdev->platform->pcm_ops->copy; | |
910 | soc_pcm_ops.silence = socdev->platform->pcm_ops->silence; | |
911 | soc_pcm_ops.ack = socdev->platform->pcm_ops->ack; | |
912 | soc_pcm_ops.page = socdev->platform->pcm_ops->page; | |
913 | ||
914 | if (playback) | |
915 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &soc_pcm_ops); | |
916 | ||
917 | if (capture) | |
918 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &soc_pcm_ops); | |
919 | ||
920 | ret = socdev->platform->pcm_new(codec->card, codec_dai, pcm); | |
921 | if (ret < 0) { | |
922 | printk(KERN_ERR "asoc: platform pcm constructor failed\n"); | |
923 | kfree(rtd); | |
924 | return ret; | |
925 | } | |
926 | ||
927 | pcm->private_free = socdev->platform->pcm_free; | |
928 | printk(KERN_INFO "asoc: %s <-> %s mapping ok\n", codec_dai->name, | |
929 | cpu_dai->name); | |
930 | return ret; | |
931 | } | |
932 | ||
933 | /* codec register dump */ | |
12ef193d | 934 | static ssize_t soc_codec_reg_show(struct snd_soc_device *devdata, char *buf) |
db2a4165 | 935 | { |
db2a4165 FM |
936 | struct snd_soc_codec *codec = devdata->codec; |
937 | int i, step = 1, count = 0; | |
938 | ||
939 | if (!codec->reg_cache_size) | |
940 | return 0; | |
941 | ||
942 | if (codec->reg_cache_step) | |
943 | step = codec->reg_cache_step; | |
944 | ||
945 | count += sprintf(buf, "%s registers\n", codec->name); | |
58cd33c0 MB |
946 | for (i = 0; i < codec->reg_cache_size; i += step) { |
947 | count += sprintf(buf + count, "%2x: ", i); | |
948 | if (count >= PAGE_SIZE - 1) | |
949 | break; | |
950 | ||
951 | if (codec->display_register) | |
952 | count += codec->display_register(codec, buf + count, | |
953 | PAGE_SIZE - count, i); | |
954 | else | |
955 | count += snprintf(buf + count, PAGE_SIZE - count, | |
956 | "%4x", codec->read(codec, i)); | |
957 | ||
958 | if (count >= PAGE_SIZE - 1) | |
959 | break; | |
960 | ||
961 | count += snprintf(buf + count, PAGE_SIZE - count, "\n"); | |
962 | if (count >= PAGE_SIZE - 1) | |
963 | break; | |
964 | } | |
965 | ||
966 | /* Truncate count; min() would cause a warning */ | |
967 | if (count >= PAGE_SIZE) | |
968 | count = PAGE_SIZE - 1; | |
db2a4165 FM |
969 | |
970 | return count; | |
971 | } | |
12ef193d TK |
972 | static ssize_t codec_reg_show(struct device *dev, |
973 | struct device_attribute *attr, char *buf) | |
974 | { | |
975 | struct snd_soc_device *devdata = dev_get_drvdata(dev); | |
976 | return soc_codec_reg_show(devdata, buf); | |
977 | } | |
978 | ||
db2a4165 FM |
979 | static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL); |
980 | ||
12ef193d TK |
981 | #ifdef CONFIG_DEBUG_FS |
982 | static int codec_reg_open_file(struct inode *inode, struct file *file) | |
983 | { | |
984 | file->private_data = inode->i_private; | |
985 | return 0; | |
986 | } | |
987 | ||
988 | static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf, | |
989 | size_t count, loff_t *ppos) | |
990 | { | |
991 | ssize_t ret; | |
992 | struct snd_soc_device *devdata = file->private_data; | |
993 | char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL); | |
994 | if (!buf) | |
995 | return -ENOMEM; | |
996 | ret = soc_codec_reg_show(devdata, buf); | |
997 | if (ret >= 0) | |
998 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); | |
999 | kfree(buf); | |
1000 | return ret; | |
1001 | } | |
1002 | ||
1003 | static ssize_t codec_reg_write_file(struct file *file, | |
1004 | const char __user *user_buf, size_t count, loff_t *ppos) | |
1005 | { | |
1006 | char buf[32]; | |
1007 | int buf_size; | |
1008 | char *start = buf; | |
1009 | unsigned long reg, value; | |
1010 | int step = 1; | |
1011 | struct snd_soc_device *devdata = file->private_data; | |
1012 | struct snd_soc_codec *codec = devdata->codec; | |
1013 | ||
1014 | buf_size = min(count, (sizeof(buf)-1)); | |
1015 | if (copy_from_user(buf, user_buf, buf_size)) | |
1016 | return -EFAULT; | |
1017 | buf[buf_size] = 0; | |
1018 | ||
1019 | if (codec->reg_cache_step) | |
1020 | step = codec->reg_cache_step; | |
1021 | ||
1022 | while (*start == ' ') | |
1023 | start++; | |
1024 | reg = simple_strtoul(start, &start, 16); | |
1025 | if ((reg >= codec->reg_cache_size) || (reg % step)) | |
1026 | return -EINVAL; | |
1027 | while (*start == ' ') | |
1028 | start++; | |
1029 | if (strict_strtoul(start, 16, &value)) | |
1030 | return -EINVAL; | |
1031 | codec->write(codec, reg, value); | |
1032 | return buf_size; | |
1033 | } | |
1034 | ||
1035 | static const struct file_operations codec_reg_fops = { | |
1036 | .open = codec_reg_open_file, | |
1037 | .read = codec_reg_read_file, | |
1038 | .write = codec_reg_write_file, | |
1039 | }; | |
1040 | ||
1041 | static void soc_init_debugfs(struct snd_soc_device *socdev) | |
1042 | { | |
1043 | struct dentry *root, *file; | |
1044 | struct snd_soc_codec *codec = socdev->codec; | |
1045 | root = debugfs_create_dir(dev_name(socdev->dev), NULL); | |
1046 | if (IS_ERR(root) || !root) | |
1047 | goto exit1; | |
1048 | ||
1049 | file = debugfs_create_file("codec_reg", 0644, | |
1050 | root, socdev, &codec_reg_fops); | |
1051 | if (!file) | |
1052 | goto exit2; | |
1053 | ||
1054 | file = debugfs_create_u32("dapm_pop_time", 0744, | |
1055 | root, &codec->pop_time); | |
1056 | if (!file) | |
1057 | goto exit2; | |
1058 | socdev->debugfs_root = root; | |
1059 | return; | |
1060 | exit2: | |
1061 | debugfs_remove_recursive(root); | |
1062 | exit1: | |
1063 | dev_err(socdev->dev, "debugfs is not available\n"); | |
1064 | } | |
1065 | ||
1066 | static void soc_cleanup_debugfs(struct snd_soc_device *socdev) | |
1067 | { | |
1068 | debugfs_remove_recursive(socdev->debugfs_root); | |
1069 | socdev->debugfs_root = NULL; | |
1070 | } | |
1071 | ||
1072 | #else | |
1073 | ||
1074 | static inline void soc_init_debugfs(struct snd_soc_device *socdev) | |
1075 | { | |
1076 | } | |
1077 | ||
1078 | static inline void soc_cleanup_debugfs(struct snd_soc_device *socdev) | |
1079 | { | |
1080 | } | |
1081 | #endif | |
1082 | ||
db2a4165 FM |
1083 | /** |
1084 | * snd_soc_new_ac97_codec - initailise AC97 device | |
1085 | * @codec: audio codec | |
1086 | * @ops: AC97 bus operations | |
1087 | * @num: AC97 codec number | |
1088 | * | |
1089 | * Initialises AC97 codec resources for use by ad-hoc devices only. | |
1090 | */ | |
1091 | int snd_soc_new_ac97_codec(struct snd_soc_codec *codec, | |
1092 | struct snd_ac97_bus_ops *ops, int num) | |
1093 | { | |
1094 | mutex_lock(&codec->mutex); | |
1095 | ||
1096 | codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL); | |
1097 | if (codec->ac97 == NULL) { | |
1098 | mutex_unlock(&codec->mutex); | |
1099 | return -ENOMEM; | |
1100 | } | |
1101 | ||
1102 | codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL); | |
1103 | if (codec->ac97->bus == NULL) { | |
1104 | kfree(codec->ac97); | |
1105 | codec->ac97 = NULL; | |
1106 | mutex_unlock(&codec->mutex); | |
1107 | return -ENOMEM; | |
1108 | } | |
1109 | ||
1110 | codec->ac97->bus->ops = ops; | |
1111 | codec->ac97->num = num; | |
1112 | mutex_unlock(&codec->mutex); | |
1113 | return 0; | |
1114 | } | |
1115 | EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec); | |
1116 | ||
1117 | /** | |
1118 | * snd_soc_free_ac97_codec - free AC97 codec device | |
1119 | * @codec: audio codec | |
1120 | * | |
1121 | * Frees AC97 codec device resources. | |
1122 | */ | |
1123 | void snd_soc_free_ac97_codec(struct snd_soc_codec *codec) | |
1124 | { | |
1125 | mutex_lock(&codec->mutex); | |
1126 | kfree(codec->ac97->bus); | |
1127 | kfree(codec->ac97); | |
1128 | codec->ac97 = NULL; | |
1129 | mutex_unlock(&codec->mutex); | |
1130 | } | |
1131 | EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec); | |
1132 | ||
1133 | /** | |
1134 | * snd_soc_update_bits - update codec register bits | |
1135 | * @codec: audio codec | |
1136 | * @reg: codec register | |
1137 | * @mask: register mask | |
1138 | * @value: new value | |
1139 | * | |
1140 | * Writes new register value. | |
1141 | * | |
1142 | * Returns 1 for change else 0. | |
1143 | */ | |
1144 | int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg, | |
1145 | unsigned short mask, unsigned short value) | |
1146 | { | |
1147 | int change; | |
1148 | unsigned short old, new; | |
1149 | ||
1150 | mutex_lock(&io_mutex); | |
1151 | old = snd_soc_read(codec, reg); | |
1152 | new = (old & ~mask) | value; | |
1153 | change = old != new; | |
1154 | if (change) | |
1155 | snd_soc_write(codec, reg, new); | |
1156 | ||
1157 | mutex_unlock(&io_mutex); | |
1158 | return change; | |
1159 | } | |
1160 | EXPORT_SYMBOL_GPL(snd_soc_update_bits); | |
1161 | ||
1162 | /** | |
1163 | * snd_soc_test_bits - test register for change | |
1164 | * @codec: audio codec | |
1165 | * @reg: codec register | |
1166 | * @mask: register mask | |
1167 | * @value: new value | |
1168 | * | |
1169 | * Tests a register with a new value and checks if the new value is | |
1170 | * different from the old value. | |
1171 | * | |
1172 | * Returns 1 for change else 0. | |
1173 | */ | |
1174 | int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg, | |
1175 | unsigned short mask, unsigned short value) | |
1176 | { | |
1177 | int change; | |
1178 | unsigned short old, new; | |
1179 | ||
1180 | mutex_lock(&io_mutex); | |
1181 | old = snd_soc_read(codec, reg); | |
1182 | new = (old & ~mask) | value; | |
1183 | change = old != new; | |
1184 | mutex_unlock(&io_mutex); | |
1185 | ||
1186 | return change; | |
1187 | } | |
1188 | EXPORT_SYMBOL_GPL(snd_soc_test_bits); | |
1189 | ||
db2a4165 FM |
1190 | /** |
1191 | * snd_soc_new_pcms - create new sound card and pcms | |
1192 | * @socdev: the SoC audio device | |
1193 | * | |
1194 | * Create a new sound card based upon the codec and interface pcms. | |
1195 | * | |
1196 | * Returns 0 for success, else error. | |
1197 | */ | |
bc7320c5 | 1198 | int snd_soc_new_pcms(struct snd_soc_device *socdev, int idx, const char *xid) |
db2a4165 FM |
1199 | { |
1200 | struct snd_soc_codec *codec = socdev->codec; | |
87506549 | 1201 | struct snd_soc_card *card = socdev->card; |
db2a4165 FM |
1202 | int ret = 0, i; |
1203 | ||
1204 | mutex_lock(&codec->mutex); | |
1205 | ||
1206 | /* register a sound card */ | |
1207 | codec->card = snd_card_new(idx, xid, codec->owner, 0); | |
1208 | if (!codec->card) { | |
1209 | printk(KERN_ERR "asoc: can't create sound card for codec %s\n", | |
1210 | codec->name); | |
1211 | mutex_unlock(&codec->mutex); | |
1212 | return -ENODEV; | |
1213 | } | |
1214 | ||
1215 | codec->card->dev = socdev->dev; | |
1216 | codec->card->private_data = codec; | |
1217 | strncpy(codec->card->driver, codec->name, sizeof(codec->card->driver)); | |
1218 | ||
1219 | /* create the pcms */ | |
87506549 MB |
1220 | for (i = 0; i < card->num_links; i++) { |
1221 | ret = soc_new_pcm(socdev, &card->dai_link[i], i); | |
db2a4165 FM |
1222 | if (ret < 0) { |
1223 | printk(KERN_ERR "asoc: can't create pcm %s\n", | |
87506549 | 1224 | card->dai_link[i].stream_name); |
db2a4165 FM |
1225 | mutex_unlock(&codec->mutex); |
1226 | return ret; | |
1227 | } | |
1228 | } | |
1229 | ||
1230 | mutex_unlock(&codec->mutex); | |
1231 | return ret; | |
1232 | } | |
1233 | EXPORT_SYMBOL_GPL(snd_soc_new_pcms); | |
1234 | ||
1235 | /** | |
968a6025 | 1236 | * snd_soc_init_card - register sound card |
db2a4165 FM |
1237 | * @socdev: the SoC audio device |
1238 | * | |
1239 | * Register a SoC sound card. Also registers an AC97 device if the | |
1240 | * codec is AC97 for ad hoc devices. | |
1241 | * | |
1242 | * Returns 0 for success, else error. | |
1243 | */ | |
968a6025 | 1244 | int snd_soc_init_card(struct snd_soc_device *socdev) |
db2a4165 FM |
1245 | { |
1246 | struct snd_soc_codec *codec = socdev->codec; | |
87506549 | 1247 | struct snd_soc_card *card = socdev->card; |
12e74f7d | 1248 | int ret = 0, i, ac97 = 0, err = 0; |
db2a4165 | 1249 | |
87506549 MB |
1250 | for (i = 0; i < card->num_links; i++) { |
1251 | if (card->dai_link[i].init) { | |
1252 | err = card->dai_link[i].init(codec); | |
12e74f7d LG |
1253 | if (err < 0) { |
1254 | printk(KERN_ERR "asoc: failed to init %s\n", | |
87506549 | 1255 | card->dai_link[i].stream_name); |
12e74f7d LG |
1256 | continue; |
1257 | } | |
1258 | } | |
3ba9e10a | 1259 | if (card->dai_link[i].codec_dai->ac97_control) |
db2a4165 FM |
1260 | ac97 = 1; |
1261 | } | |
1262 | snprintf(codec->card->shortname, sizeof(codec->card->shortname), | |
87506549 | 1263 | "%s", card->name); |
db2a4165 | 1264 | snprintf(codec->card->longname, sizeof(codec->card->longname), |
87506549 | 1265 | "%s (%s)", card->name, codec->name); |
db2a4165 FM |
1266 | |
1267 | ret = snd_card_register(codec->card); | |
1268 | if (ret < 0) { | |
3ff3f64b | 1269 | printk(KERN_ERR "asoc: failed to register soundcard for %s\n", |
db2a4165 | 1270 | codec->name); |
12e74f7d | 1271 | goto out; |
db2a4165 FM |
1272 | } |
1273 | ||
08c8efe6 | 1274 | mutex_lock(&codec->mutex); |
db2a4165 | 1275 | #ifdef CONFIG_SND_SOC_AC97_BUS |
12e74f7d LG |
1276 | if (ac97) { |
1277 | ret = soc_ac97_dev_register(codec); | |
1278 | if (ret < 0) { | |
1279 | printk(KERN_ERR "asoc: AC97 device register failed\n"); | |
1280 | snd_card_free(codec->card); | |
08c8efe6 | 1281 | mutex_unlock(&codec->mutex); |
12e74f7d LG |
1282 | goto out; |
1283 | } | |
1284 | } | |
db2a4165 FM |
1285 | #endif |
1286 | ||
12e74f7d LG |
1287 | err = snd_soc_dapm_sys_add(socdev->dev); |
1288 | if (err < 0) | |
1289 | printk(KERN_WARNING "asoc: failed to add dapm sysfs entries\n"); | |
1290 | ||
1291 | err = device_create_file(socdev->dev, &dev_attr_codec_reg); | |
1292 | if (err < 0) | |
3ff3f64b | 1293 | printk(KERN_WARNING "asoc: failed to add codec sysfs files\n"); |
08c8efe6 | 1294 | |
12ef193d | 1295 | soc_init_debugfs(socdev); |
db2a4165 | 1296 | mutex_unlock(&codec->mutex); |
08c8efe6 MB |
1297 | |
1298 | out: | |
db2a4165 FM |
1299 | return ret; |
1300 | } | |
968a6025 | 1301 | EXPORT_SYMBOL_GPL(snd_soc_init_card); |
db2a4165 FM |
1302 | |
1303 | /** | |
1304 | * snd_soc_free_pcms - free sound card and pcms | |
1305 | * @socdev: the SoC audio device | |
1306 | * | |
1307 | * Frees sound card and pcms associated with the socdev. | |
1308 | * Also unregister the codec if it is an AC97 device. | |
1309 | */ | |
1310 | void snd_soc_free_pcms(struct snd_soc_device *socdev) | |
1311 | { | |
1312 | struct snd_soc_codec *codec = socdev->codec; | |
a68660e0 | 1313 | #ifdef CONFIG_SND_SOC_AC97_BUS |
3c4b266f | 1314 | struct snd_soc_dai *codec_dai; |
a68660e0 LG |
1315 | int i; |
1316 | #endif | |
db2a4165 FM |
1317 | |
1318 | mutex_lock(&codec->mutex); | |
12ef193d | 1319 | soc_cleanup_debugfs(socdev); |
db2a4165 | 1320 | #ifdef CONFIG_SND_SOC_AC97_BUS |
3ff3f64b | 1321 | for (i = 0; i < codec->num_dai; i++) { |
a68660e0 | 1322 | codec_dai = &codec->dai[i]; |
3ba9e10a | 1323 | if (codec_dai->ac97_control && codec->ac97) { |
a68660e0 LG |
1324 | soc_ac97_dev_unregister(codec); |
1325 | goto free_card; | |
1326 | } | |
1327 | } | |
1328 | free_card: | |
db2a4165 FM |
1329 | #endif |
1330 | ||
1331 | if (codec->card) | |
1332 | snd_card_free(codec->card); | |
1333 | device_remove_file(socdev->dev, &dev_attr_codec_reg); | |
1334 | mutex_unlock(&codec->mutex); | |
1335 | } | |
1336 | EXPORT_SYMBOL_GPL(snd_soc_free_pcms); | |
1337 | ||
1338 | /** | |
1339 | * snd_soc_set_runtime_hwparams - set the runtime hardware parameters | |
1340 | * @substream: the pcm substream | |
1341 | * @hw: the hardware parameters | |
1342 | * | |
1343 | * Sets the substream runtime hardware parameters. | |
1344 | */ | |
1345 | int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream, | |
1346 | const struct snd_pcm_hardware *hw) | |
1347 | { | |
1348 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1349 | runtime->hw.info = hw->info; | |
1350 | runtime->hw.formats = hw->formats; | |
1351 | runtime->hw.period_bytes_min = hw->period_bytes_min; | |
1352 | runtime->hw.period_bytes_max = hw->period_bytes_max; | |
1353 | runtime->hw.periods_min = hw->periods_min; | |
1354 | runtime->hw.periods_max = hw->periods_max; | |
1355 | runtime->hw.buffer_bytes_max = hw->buffer_bytes_max; | |
1356 | runtime->hw.fifo_size = hw->fifo_size; | |
1357 | return 0; | |
1358 | } | |
1359 | EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams); | |
1360 | ||
1361 | /** | |
1362 | * snd_soc_cnew - create new control | |
1363 | * @_template: control template | |
1364 | * @data: control private data | |
1365 | * @lnng_name: control long name | |
1366 | * | |
1367 | * Create a new mixer control from a template control. | |
1368 | * | |
1369 | * Returns 0 for success, else error. | |
1370 | */ | |
1371 | struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template, | |
1372 | void *data, char *long_name) | |
1373 | { | |
1374 | struct snd_kcontrol_new template; | |
1375 | ||
1376 | memcpy(&template, _template, sizeof(template)); | |
1377 | if (long_name) | |
1378 | template.name = long_name; | |
db2a4165 FM |
1379 | template.index = 0; |
1380 | ||
1381 | return snd_ctl_new1(&template, data); | |
1382 | } | |
1383 | EXPORT_SYMBOL_GPL(snd_soc_cnew); | |
1384 | ||
1385 | /** | |
1386 | * snd_soc_info_enum_double - enumerated double mixer info callback | |
1387 | * @kcontrol: mixer control | |
1388 | * @uinfo: control element information | |
1389 | * | |
1390 | * Callback to provide information about a double enumerated | |
1391 | * mixer control. | |
1392 | * | |
1393 | * Returns 0 for success. | |
1394 | */ | |
1395 | int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol, | |
1396 | struct snd_ctl_elem_info *uinfo) | |
1397 | { | |
1398 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1399 | ||
1400 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; | |
1401 | uinfo->count = e->shift_l == e->shift_r ? 1 : 2; | |
f8ba0b7b | 1402 | uinfo->value.enumerated.items = e->max; |
db2a4165 | 1403 | |
f8ba0b7b JS |
1404 | if (uinfo->value.enumerated.item > e->max - 1) |
1405 | uinfo->value.enumerated.item = e->max - 1; | |
db2a4165 FM |
1406 | strcpy(uinfo->value.enumerated.name, |
1407 | e->texts[uinfo->value.enumerated.item]); | |
1408 | return 0; | |
1409 | } | |
1410 | EXPORT_SYMBOL_GPL(snd_soc_info_enum_double); | |
1411 | ||
1412 | /** | |
1413 | * snd_soc_get_enum_double - enumerated double mixer get callback | |
1414 | * @kcontrol: mixer control | |
1415 | * @uinfo: control element information | |
1416 | * | |
1417 | * Callback to get the value of a double enumerated mixer. | |
1418 | * | |
1419 | * Returns 0 for success. | |
1420 | */ | |
1421 | int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol, | |
1422 | struct snd_ctl_elem_value *ucontrol) | |
1423 | { | |
1424 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1425 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1426 | unsigned short val, bitmask; | |
1427 | ||
f8ba0b7b | 1428 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
db2a4165 FM |
1429 | ; |
1430 | val = snd_soc_read(codec, e->reg); | |
3ff3f64b MB |
1431 | ucontrol->value.enumerated.item[0] |
1432 | = (val >> e->shift_l) & (bitmask - 1); | |
db2a4165 FM |
1433 | if (e->shift_l != e->shift_r) |
1434 | ucontrol->value.enumerated.item[1] = | |
1435 | (val >> e->shift_r) & (bitmask - 1); | |
1436 | ||
1437 | return 0; | |
1438 | } | |
1439 | EXPORT_SYMBOL_GPL(snd_soc_get_enum_double); | |
1440 | ||
1441 | /** | |
1442 | * snd_soc_put_enum_double - enumerated double mixer put callback | |
1443 | * @kcontrol: mixer control | |
1444 | * @uinfo: control element information | |
1445 | * | |
1446 | * Callback to set the value of a double enumerated mixer. | |
1447 | * | |
1448 | * Returns 0 for success. | |
1449 | */ | |
1450 | int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol, | |
1451 | struct snd_ctl_elem_value *ucontrol) | |
1452 | { | |
1453 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1454 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1455 | unsigned short val; | |
1456 | unsigned short mask, bitmask; | |
1457 | ||
f8ba0b7b | 1458 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
db2a4165 | 1459 | ; |
f8ba0b7b | 1460 | if (ucontrol->value.enumerated.item[0] > e->max - 1) |
db2a4165 FM |
1461 | return -EINVAL; |
1462 | val = ucontrol->value.enumerated.item[0] << e->shift_l; | |
1463 | mask = (bitmask - 1) << e->shift_l; | |
1464 | if (e->shift_l != e->shift_r) { | |
f8ba0b7b | 1465 | if (ucontrol->value.enumerated.item[1] > e->max - 1) |
db2a4165 FM |
1466 | return -EINVAL; |
1467 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
1468 | mask |= (bitmask - 1) << e->shift_r; | |
1469 | } | |
1470 | ||
1471 | return snd_soc_update_bits(codec, e->reg, mask, val); | |
1472 | } | |
1473 | EXPORT_SYMBOL_GPL(snd_soc_put_enum_double); | |
1474 | ||
1475 | /** | |
1476 | * snd_soc_info_enum_ext - external enumerated single mixer info callback | |
1477 | * @kcontrol: mixer control | |
1478 | * @uinfo: control element information | |
1479 | * | |
1480 | * Callback to provide information about an external enumerated | |
1481 | * single mixer. | |
1482 | * | |
1483 | * Returns 0 for success. | |
1484 | */ | |
1485 | int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol, | |
1486 | struct snd_ctl_elem_info *uinfo) | |
1487 | { | |
1488 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1489 | ||
1490 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; | |
1491 | uinfo->count = 1; | |
f8ba0b7b | 1492 | uinfo->value.enumerated.items = e->max; |
db2a4165 | 1493 | |
f8ba0b7b JS |
1494 | if (uinfo->value.enumerated.item > e->max - 1) |
1495 | uinfo->value.enumerated.item = e->max - 1; | |
db2a4165 FM |
1496 | strcpy(uinfo->value.enumerated.name, |
1497 | e->texts[uinfo->value.enumerated.item]); | |
1498 | return 0; | |
1499 | } | |
1500 | EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext); | |
1501 | ||
1502 | /** | |
1503 | * snd_soc_info_volsw_ext - external single mixer info callback | |
1504 | * @kcontrol: mixer control | |
1505 | * @uinfo: control element information | |
1506 | * | |
1507 | * Callback to provide information about a single external mixer control. | |
1508 | * | |
1509 | * Returns 0 for success. | |
1510 | */ | |
1511 | int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol, | |
1512 | struct snd_ctl_elem_info *uinfo) | |
1513 | { | |
a7a4ac86 PZ |
1514 | int max = kcontrol->private_value; |
1515 | ||
1516 | if (max == 1) | |
1517 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1518 | else | |
1519 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
db2a4165 | 1520 | |
db2a4165 FM |
1521 | uinfo->count = 1; |
1522 | uinfo->value.integer.min = 0; | |
a7a4ac86 | 1523 | uinfo->value.integer.max = max; |
db2a4165 FM |
1524 | return 0; |
1525 | } | |
1526 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext); | |
1527 | ||
db2a4165 FM |
1528 | /** |
1529 | * snd_soc_info_volsw - single mixer info callback | |
1530 | * @kcontrol: mixer control | |
1531 | * @uinfo: control element information | |
1532 | * | |
1533 | * Callback to provide information about a single mixer control. | |
1534 | * | |
1535 | * Returns 0 for success. | |
1536 | */ | |
1537 | int snd_soc_info_volsw(struct snd_kcontrol *kcontrol, | |
1538 | struct snd_ctl_elem_info *uinfo) | |
1539 | { | |
4eaa9819 JS |
1540 | struct soc_mixer_control *mc = |
1541 | (struct soc_mixer_control *)kcontrol->private_value; | |
1542 | int max = mc->max; | |
762b8df7 | 1543 | unsigned int shift = mc->shift; |
815ecf8d | 1544 | unsigned int rshift = mc->rshift; |
db2a4165 | 1545 | |
a7a4ac86 PZ |
1546 | if (max == 1) |
1547 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1548 | else | |
1549 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
1550 | ||
db2a4165 FM |
1551 | uinfo->count = shift == rshift ? 1 : 2; |
1552 | uinfo->value.integer.min = 0; | |
a7a4ac86 | 1553 | uinfo->value.integer.max = max; |
db2a4165 FM |
1554 | return 0; |
1555 | } | |
1556 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw); | |
1557 | ||
1558 | /** | |
1559 | * snd_soc_get_volsw - single mixer get callback | |
1560 | * @kcontrol: mixer control | |
1561 | * @uinfo: control element information | |
1562 | * | |
1563 | * Callback to get the value of a single mixer control. | |
1564 | * | |
1565 | * Returns 0 for success. | |
1566 | */ | |
1567 | int snd_soc_get_volsw(struct snd_kcontrol *kcontrol, | |
1568 | struct snd_ctl_elem_value *ucontrol) | |
1569 | { | |
4eaa9819 JS |
1570 | struct soc_mixer_control *mc = |
1571 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 1572 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
1573 | unsigned int reg = mc->reg; |
1574 | unsigned int shift = mc->shift; | |
1575 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1576 | int max = mc->max; |
815ecf8d JS |
1577 | unsigned int mask = (1 << fls(max)) - 1; |
1578 | unsigned int invert = mc->invert; | |
db2a4165 FM |
1579 | |
1580 | ucontrol->value.integer.value[0] = | |
1581 | (snd_soc_read(codec, reg) >> shift) & mask; | |
1582 | if (shift != rshift) | |
1583 | ucontrol->value.integer.value[1] = | |
1584 | (snd_soc_read(codec, reg) >> rshift) & mask; | |
1585 | if (invert) { | |
1586 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1587 | max - ucontrol->value.integer.value[0]; |
db2a4165 FM |
1588 | if (shift != rshift) |
1589 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 1590 | max - ucontrol->value.integer.value[1]; |
db2a4165 FM |
1591 | } |
1592 | ||
1593 | return 0; | |
1594 | } | |
1595 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw); | |
1596 | ||
1597 | /** | |
1598 | * snd_soc_put_volsw - single mixer put callback | |
1599 | * @kcontrol: mixer control | |
1600 | * @uinfo: control element information | |
1601 | * | |
1602 | * Callback to set the value of a single mixer control. | |
1603 | * | |
1604 | * Returns 0 for success. | |
1605 | */ | |
1606 | int snd_soc_put_volsw(struct snd_kcontrol *kcontrol, | |
1607 | struct snd_ctl_elem_value *ucontrol) | |
1608 | { | |
4eaa9819 JS |
1609 | struct soc_mixer_control *mc = |
1610 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 1611 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
1612 | unsigned int reg = mc->reg; |
1613 | unsigned int shift = mc->shift; | |
1614 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1615 | int max = mc->max; |
815ecf8d JS |
1616 | unsigned int mask = (1 << fls(max)) - 1; |
1617 | unsigned int invert = mc->invert; | |
db2a4165 FM |
1618 | unsigned short val, val2, val_mask; |
1619 | ||
1620 | val = (ucontrol->value.integer.value[0] & mask); | |
1621 | if (invert) | |
a7a4ac86 | 1622 | val = max - val; |
db2a4165 FM |
1623 | val_mask = mask << shift; |
1624 | val = val << shift; | |
1625 | if (shift != rshift) { | |
1626 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1627 | if (invert) | |
a7a4ac86 | 1628 | val2 = max - val2; |
db2a4165 FM |
1629 | val_mask |= mask << rshift; |
1630 | val |= val2 << rshift; | |
1631 | } | |
a7a4ac86 | 1632 | return snd_soc_update_bits(codec, reg, val_mask, val); |
db2a4165 FM |
1633 | } |
1634 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw); | |
1635 | ||
1636 | /** | |
1637 | * snd_soc_info_volsw_2r - double mixer info callback | |
1638 | * @kcontrol: mixer control | |
1639 | * @uinfo: control element information | |
1640 | * | |
1641 | * Callback to provide information about a double mixer control that | |
1642 | * spans 2 codec registers. | |
1643 | * | |
1644 | * Returns 0 for success. | |
1645 | */ | |
1646 | int snd_soc_info_volsw_2r(struct snd_kcontrol *kcontrol, | |
1647 | struct snd_ctl_elem_info *uinfo) | |
1648 | { | |
4eaa9819 JS |
1649 | struct soc_mixer_control *mc = |
1650 | (struct soc_mixer_control *)kcontrol->private_value; | |
1651 | int max = mc->max; | |
a7a4ac86 PZ |
1652 | |
1653 | if (max == 1) | |
1654 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1655 | else | |
1656 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
db2a4165 | 1657 | |
db2a4165 FM |
1658 | uinfo->count = 2; |
1659 | uinfo->value.integer.min = 0; | |
a7a4ac86 | 1660 | uinfo->value.integer.max = max; |
db2a4165 FM |
1661 | return 0; |
1662 | } | |
1663 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r); | |
1664 | ||
1665 | /** | |
1666 | * snd_soc_get_volsw_2r - double mixer get callback | |
1667 | * @kcontrol: mixer control | |
1668 | * @uinfo: control element information | |
1669 | * | |
1670 | * Callback to get the value of a double mixer control that spans 2 registers. | |
1671 | * | |
1672 | * Returns 0 for success. | |
1673 | */ | |
1674 | int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol, | |
1675 | struct snd_ctl_elem_value *ucontrol) | |
1676 | { | |
4eaa9819 JS |
1677 | struct soc_mixer_control *mc = |
1678 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 1679 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
1680 | unsigned int reg = mc->reg; |
1681 | unsigned int reg2 = mc->rreg; | |
1682 | unsigned int shift = mc->shift; | |
4eaa9819 | 1683 | int max = mc->max; |
815ecf8d JS |
1684 | unsigned int mask = (1<<fls(max))-1; |
1685 | unsigned int invert = mc->invert; | |
db2a4165 FM |
1686 | |
1687 | ucontrol->value.integer.value[0] = | |
1688 | (snd_soc_read(codec, reg) >> shift) & mask; | |
1689 | ucontrol->value.integer.value[1] = | |
1690 | (snd_soc_read(codec, reg2) >> shift) & mask; | |
1691 | if (invert) { | |
1692 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1693 | max - ucontrol->value.integer.value[0]; |
db2a4165 | 1694 | ucontrol->value.integer.value[1] = |
a7a4ac86 | 1695 | max - ucontrol->value.integer.value[1]; |
db2a4165 FM |
1696 | } |
1697 | ||
1698 | return 0; | |
1699 | } | |
1700 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r); | |
1701 | ||
1702 | /** | |
1703 | * snd_soc_put_volsw_2r - double mixer set callback | |
1704 | * @kcontrol: mixer control | |
1705 | * @uinfo: control element information | |
1706 | * | |
1707 | * Callback to set the value of a double mixer control that spans 2 registers. | |
1708 | * | |
1709 | * Returns 0 for success. | |
1710 | */ | |
1711 | int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol, | |
1712 | struct snd_ctl_elem_value *ucontrol) | |
1713 | { | |
4eaa9819 JS |
1714 | struct soc_mixer_control *mc = |
1715 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 1716 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
1717 | unsigned int reg = mc->reg; |
1718 | unsigned int reg2 = mc->rreg; | |
1719 | unsigned int shift = mc->shift; | |
4eaa9819 | 1720 | int max = mc->max; |
815ecf8d JS |
1721 | unsigned int mask = (1 << fls(max)) - 1; |
1722 | unsigned int invert = mc->invert; | |
db2a4165 FM |
1723 | int err; |
1724 | unsigned short val, val2, val_mask; | |
1725 | ||
1726 | val_mask = mask << shift; | |
1727 | val = (ucontrol->value.integer.value[0] & mask); | |
1728 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1729 | ||
1730 | if (invert) { | |
a7a4ac86 PZ |
1731 | val = max - val; |
1732 | val2 = max - val2; | |
db2a4165 FM |
1733 | } |
1734 | ||
1735 | val = val << shift; | |
1736 | val2 = val2 << shift; | |
1737 | ||
3ff3f64b MB |
1738 | err = snd_soc_update_bits(codec, reg, val_mask, val); |
1739 | if (err < 0) | |
db2a4165 FM |
1740 | return err; |
1741 | ||
1742 | err = snd_soc_update_bits(codec, reg2, val_mask, val2); | |
1743 | return err; | |
1744 | } | |
1745 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r); | |
1746 | ||
e13ac2e9 MB |
1747 | /** |
1748 | * snd_soc_info_volsw_s8 - signed mixer info callback | |
1749 | * @kcontrol: mixer control | |
1750 | * @uinfo: control element information | |
1751 | * | |
1752 | * Callback to provide information about a signed mixer control. | |
1753 | * | |
1754 | * Returns 0 for success. | |
1755 | */ | |
1756 | int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol, | |
1757 | struct snd_ctl_elem_info *uinfo) | |
1758 | { | |
4eaa9819 JS |
1759 | struct soc_mixer_control *mc = |
1760 | (struct soc_mixer_control *)kcontrol->private_value; | |
1761 | int max = mc->max; | |
1762 | int min = mc->min; | |
e13ac2e9 MB |
1763 | |
1764 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
1765 | uinfo->count = 2; | |
1766 | uinfo->value.integer.min = 0; | |
1767 | uinfo->value.integer.max = max-min; | |
1768 | return 0; | |
1769 | } | |
1770 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8); | |
1771 | ||
1772 | /** | |
1773 | * snd_soc_get_volsw_s8 - signed mixer get callback | |
1774 | * @kcontrol: mixer control | |
1775 | * @uinfo: control element information | |
1776 | * | |
1777 | * Callback to get the value of a signed mixer control. | |
1778 | * | |
1779 | * Returns 0 for success. | |
1780 | */ | |
1781 | int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol, | |
1782 | struct snd_ctl_elem_value *ucontrol) | |
1783 | { | |
4eaa9819 JS |
1784 | struct soc_mixer_control *mc = |
1785 | (struct soc_mixer_control *)kcontrol->private_value; | |
e13ac2e9 | 1786 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d | 1787 | unsigned int reg = mc->reg; |
4eaa9819 | 1788 | int min = mc->min; |
e13ac2e9 MB |
1789 | int val = snd_soc_read(codec, reg); |
1790 | ||
1791 | ucontrol->value.integer.value[0] = | |
1792 | ((signed char)(val & 0xff))-min; | |
1793 | ucontrol->value.integer.value[1] = | |
1794 | ((signed char)((val >> 8) & 0xff))-min; | |
1795 | return 0; | |
1796 | } | |
1797 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8); | |
1798 | ||
1799 | /** | |
1800 | * snd_soc_put_volsw_sgn - signed mixer put callback | |
1801 | * @kcontrol: mixer control | |
1802 | * @uinfo: control element information | |
1803 | * | |
1804 | * Callback to set the value of a signed mixer control. | |
1805 | * | |
1806 | * Returns 0 for success. | |
1807 | */ | |
1808 | int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol, | |
1809 | struct snd_ctl_elem_value *ucontrol) | |
1810 | { | |
4eaa9819 JS |
1811 | struct soc_mixer_control *mc = |
1812 | (struct soc_mixer_control *)kcontrol->private_value; | |
e13ac2e9 | 1813 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d | 1814 | unsigned int reg = mc->reg; |
4eaa9819 | 1815 | int min = mc->min; |
e13ac2e9 MB |
1816 | unsigned short val; |
1817 | ||
1818 | val = (ucontrol->value.integer.value[0]+min) & 0xff; | |
1819 | val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8; | |
1820 | ||
1821 | return snd_soc_update_bits(codec, reg, 0xffff, val); | |
1822 | } | |
1823 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8); | |
1824 | ||
8c6529db LG |
1825 | /** |
1826 | * snd_soc_dai_set_sysclk - configure DAI system or master clock. | |
1827 | * @dai: DAI | |
1828 | * @clk_id: DAI specific clock ID | |
1829 | * @freq: new clock frequency in Hz | |
1830 | * @dir: new clock direction - input/output. | |
1831 | * | |
1832 | * Configures the DAI master (MCLK) or system (SYSCLK) clocking. | |
1833 | */ | |
1834 | int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id, | |
1835 | unsigned int freq, int dir) | |
1836 | { | |
dee89c4d MB |
1837 | if (dai->ops.set_sysclk) |
1838 | return dai->ops.set_sysclk(dai, clk_id, freq, dir); | |
8c6529db LG |
1839 | else |
1840 | return -EINVAL; | |
1841 | } | |
1842 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk); | |
1843 | ||
1844 | /** | |
1845 | * snd_soc_dai_set_clkdiv - configure DAI clock dividers. | |
1846 | * @dai: DAI | |
1847 | * @clk_id: DAI specific clock divider ID | |
1848 | * @div: new clock divisor. | |
1849 | * | |
1850 | * Configures the clock dividers. This is used to derive the best DAI bit and | |
1851 | * frame clocks from the system or master clock. It's best to set the DAI bit | |
1852 | * and frame clocks as low as possible to save system power. | |
1853 | */ | |
1854 | int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai, | |
1855 | int div_id, int div) | |
1856 | { | |
dee89c4d MB |
1857 | if (dai->ops.set_clkdiv) |
1858 | return dai->ops.set_clkdiv(dai, div_id, div); | |
8c6529db LG |
1859 | else |
1860 | return -EINVAL; | |
1861 | } | |
1862 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv); | |
1863 | ||
1864 | /** | |
1865 | * snd_soc_dai_set_pll - configure DAI PLL. | |
1866 | * @dai: DAI | |
1867 | * @pll_id: DAI specific PLL ID | |
1868 | * @freq_in: PLL input clock frequency in Hz | |
1869 | * @freq_out: requested PLL output clock frequency in Hz | |
1870 | * | |
1871 | * Configures and enables PLL to generate output clock based on input clock. | |
1872 | */ | |
1873 | int snd_soc_dai_set_pll(struct snd_soc_dai *dai, | |
1874 | int pll_id, unsigned int freq_in, unsigned int freq_out) | |
1875 | { | |
dee89c4d MB |
1876 | if (dai->ops.set_pll) |
1877 | return dai->ops.set_pll(dai, pll_id, freq_in, freq_out); | |
8c6529db LG |
1878 | else |
1879 | return -EINVAL; | |
1880 | } | |
1881 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll); | |
1882 | ||
1883 | /** | |
1884 | * snd_soc_dai_set_fmt - configure DAI hardware audio format. | |
1885 | * @dai: DAI | |
8c6529db LG |
1886 | * @fmt: SND_SOC_DAIFMT_ format value. |
1887 | * | |
1888 | * Configures the DAI hardware format and clocking. | |
1889 | */ | |
1890 | int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) | |
1891 | { | |
dee89c4d MB |
1892 | if (dai->ops.set_fmt) |
1893 | return dai->ops.set_fmt(dai, fmt); | |
8c6529db LG |
1894 | else |
1895 | return -EINVAL; | |
1896 | } | |
1897 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt); | |
1898 | ||
1899 | /** | |
1900 | * snd_soc_dai_set_tdm_slot - configure DAI TDM. | |
1901 | * @dai: DAI | |
1902 | * @mask: DAI specific mask representing used slots. | |
1903 | * @slots: Number of slots in use. | |
1904 | * | |
1905 | * Configures a DAI for TDM operation. Both mask and slots are codec and DAI | |
1906 | * specific. | |
1907 | */ | |
1908 | int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai, | |
1909 | unsigned int mask, int slots) | |
1910 | { | |
dee89c4d MB |
1911 | if (dai->ops.set_sysclk) |
1912 | return dai->ops.set_tdm_slot(dai, mask, slots); | |
8c6529db LG |
1913 | else |
1914 | return -EINVAL; | |
1915 | } | |
1916 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot); | |
1917 | ||
1918 | /** | |
1919 | * snd_soc_dai_set_tristate - configure DAI system or master clock. | |
1920 | * @dai: DAI | |
1921 | * @tristate: tristate enable | |
1922 | * | |
1923 | * Tristates the DAI so that others can use it. | |
1924 | */ | |
1925 | int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate) | |
1926 | { | |
dee89c4d MB |
1927 | if (dai->ops.set_sysclk) |
1928 | return dai->ops.set_tristate(dai, tristate); | |
8c6529db LG |
1929 | else |
1930 | return -EINVAL; | |
1931 | } | |
1932 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate); | |
1933 | ||
1934 | /** | |
1935 | * snd_soc_dai_digital_mute - configure DAI system or master clock. | |
1936 | * @dai: DAI | |
1937 | * @mute: mute enable | |
1938 | * | |
1939 | * Mutes the DAI DAC. | |
1940 | */ | |
1941 | int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute) | |
1942 | { | |
dee89c4d MB |
1943 | if (dai->ops.digital_mute) |
1944 | return dai->ops.digital_mute(dai, mute); | |
8c6529db LG |
1945 | else |
1946 | return -EINVAL; | |
1947 | } | |
1948 | EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute); | |
1949 | ||
db2a4165 FM |
1950 | static int __devinit snd_soc_init(void) |
1951 | { | |
db2a4165 FM |
1952 | return platform_driver_register(&soc_driver); |
1953 | } | |
1954 | ||
1955 | static void snd_soc_exit(void) | |
1956 | { | |
3ff3f64b | 1957 | platform_driver_unregister(&soc_driver); |
db2a4165 FM |
1958 | } |
1959 | ||
1960 | module_init(snd_soc_init); | |
1961 | module_exit(snd_soc_exit); | |
1962 | ||
1963 | /* Module information */ | |
d331124d | 1964 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
db2a4165 FM |
1965 | MODULE_DESCRIPTION("ALSA SoC Core"); |
1966 | MODULE_LICENSE("GPL"); | |
8b45a209 | 1967 | MODULE_ALIAS("platform:soc-audio"); |