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 | * | |
db2a4165 FM |
7 | * Author: Liam Girdwood |
8 | * liam.girdwood@wolfsonmicro.com or linux@wolfsonmicro.com | |
0664d888 LG |
9 | * with code, comments and ideas from :- |
10 | * Richard Purdie <richard@openedhand.com> | |
db2a4165 FM |
11 | * |
12 | * This program is free software; you can redistribute it and/or modify it | |
13 | * under the terms of the GNU General Public License as published by the | |
14 | * Free Software Foundation; either version 2 of the License, or (at your | |
15 | * option) any later version. | |
16 | * | |
17 | * Revision history | |
18 | * 12th Aug 2005 Initial version. | |
19 | * 25th Oct 2005 Working Codec, Interface and Platform registration. | |
20 | * | |
21 | * TODO: | |
22 | * o Add hw rules to enforce rates, etc. | |
23 | * o More testing with other codecs/machines. | |
24 | * o Add more codecs and platforms to ensure good API coverage. | |
25 | * o Support TDM on PCM and I2S | |
26 | */ | |
27 | ||
28 | #include <linux/module.h> | |
29 | #include <linux/moduleparam.h> | |
30 | #include <linux/init.h> | |
31 | #include <linux/delay.h> | |
32 | #include <linux/pm.h> | |
33 | #include <linux/bitops.h> | |
34 | #include <linux/platform_device.h> | |
35 | #include <sound/driver.h> | |
36 | #include <sound/core.h> | |
37 | #include <sound/pcm.h> | |
38 | #include <sound/pcm_params.h> | |
39 | #include <sound/soc.h> | |
40 | #include <sound/soc-dapm.h> | |
41 | #include <sound/initval.h> | |
42 | ||
43 | /* debug */ | |
44 | #define SOC_DEBUG 0 | |
45 | #if SOC_DEBUG | |
46 | #define dbg(format, arg...) printk(format, ## arg) | |
47 | #else | |
48 | #define dbg(format, arg...) | |
49 | #endif | |
a71a468a | 50 | |
db2a4165 FM |
51 | static DEFINE_MUTEX(pcm_mutex); |
52 | static DEFINE_MUTEX(io_mutex); | |
db2a4165 FM |
53 | static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq); |
54 | ||
db2a4165 FM |
55 | /* |
56 | * This is a timeout to do a DAPM powerdown after a stream is closed(). | |
57 | * It can be used to eliminate pops between different playback streams, e.g. | |
58 | * between two audio tracks. | |
59 | */ | |
60 | static int pmdown_time = 5000; | |
61 | module_param(pmdown_time, int, 0); | |
62 | MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)"); | |
63 | ||
965ac42c LG |
64 | /* |
65 | * This function forces any delayed work to be queued and run. | |
66 | */ | |
67 | static int run_delayed_work(struct delayed_work *dwork) | |
68 | { | |
69 | int ret; | |
70 | ||
71 | /* cancel any work waiting to be queued. */ | |
72 | ret = cancel_delayed_work(dwork); | |
73 | ||
74 | /* if there was any work waiting then we run it now and | |
75 | * wait for it's completion */ | |
76 | if (ret) { | |
77 | schedule_delayed_work(dwork, 0); | |
78 | flush_scheduled_work(); | |
79 | } | |
80 | return ret; | |
81 | } | |
82 | ||
db2a4165 FM |
83 | #ifdef CONFIG_SND_SOC_AC97_BUS |
84 | /* unregister ac97 codec */ | |
85 | static int soc_ac97_dev_unregister(struct snd_soc_codec *codec) | |
86 | { | |
87 | if (codec->ac97->dev.bus) | |
88 | device_unregister(&codec->ac97->dev); | |
89 | return 0; | |
90 | } | |
91 | ||
92 | /* stop no dev release warning */ | |
93 | static void soc_ac97_device_release(struct device *dev){} | |
94 | ||
95 | /* register ac97 codec to bus */ | |
96 | static int soc_ac97_dev_register(struct snd_soc_codec *codec) | |
97 | { | |
98 | int err; | |
99 | ||
100 | codec->ac97->dev.bus = &ac97_bus_type; | |
101 | codec->ac97->dev.parent = NULL; | |
102 | codec->ac97->dev.release = soc_ac97_device_release; | |
103 | ||
104 | snprintf(codec->ac97->dev.bus_id, BUS_ID_SIZE, "%d-%d:%s", | |
105 | codec->card->number, 0, codec->name); | |
106 | err = device_register(&codec->ac97->dev); | |
107 | if (err < 0) { | |
108 | snd_printk(KERN_ERR "Can't register ac97 bus\n"); | |
109 | codec->ac97->dev.bus = NULL; | |
110 | return err; | |
111 | } | |
112 | return 0; | |
113 | } | |
114 | #endif | |
115 | ||
116 | static inline const char* get_dai_name(int type) | |
117 | { | |
118 | switch(type) { | |
119 | case SND_SOC_DAI_AC97: | |
120 | return "AC97"; | |
121 | case SND_SOC_DAI_I2S: | |
122 | return "I2S"; | |
123 | case SND_SOC_DAI_PCM: | |
124 | return "PCM"; | |
125 | } | |
126 | return NULL; | |
127 | } | |
128 | ||
db2a4165 FM |
129 | /* |
130 | * Called by ALSA when a PCM substream is opened, the runtime->hw record is | |
131 | * then initialized and any private data can be allocated. This also calls | |
132 | * startup for the cpu DAI, platform, machine and codec DAI. | |
133 | */ | |
134 | static int soc_pcm_open(struct snd_pcm_substream *substream) | |
135 | { | |
136 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
137 | struct snd_soc_device *socdev = rtd->socdev; | |
138 | struct snd_pcm_runtime *runtime = substream->runtime; | |
cb666e5b | 139 | struct snd_soc_dai_link *machine = rtd->dai; |
db2a4165 | 140 | struct snd_soc_platform *platform = socdev->platform; |
cb666e5b LG |
141 | struct snd_soc_cpu_dai *cpu_dai = machine->cpu_dai; |
142 | struct snd_soc_codec_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
143 | int ret = 0; |
144 | ||
145 | mutex_lock(&pcm_mutex); | |
146 | ||
147 | /* startup the audio subsystem */ | |
cb666e5b LG |
148 | if (cpu_dai->ops.startup) { |
149 | ret = cpu_dai->ops.startup(substream); | |
db2a4165 FM |
150 | if (ret < 0) { |
151 | printk(KERN_ERR "asoc: can't open interface %s\n", | |
cb666e5b | 152 | cpu_dai->name); |
db2a4165 FM |
153 | goto out; |
154 | } | |
155 | } | |
156 | ||
157 | if (platform->pcm_ops->open) { | |
158 | ret = platform->pcm_ops->open(substream); | |
159 | if (ret < 0) { | |
160 | printk(KERN_ERR "asoc: can't open platform %s\n", platform->name); | |
161 | goto platform_err; | |
162 | } | |
163 | } | |
164 | ||
cb666e5b LG |
165 | if (codec_dai->ops.startup) { |
166 | ret = codec_dai->ops.startup(substream); | |
db2a4165 | 167 | if (ret < 0) { |
cb666e5b LG |
168 | printk(KERN_ERR "asoc: can't open codec %s\n", |
169 | codec_dai->name); | |
170 | goto codec_dai_err; | |
db2a4165 FM |
171 | } |
172 | } | |
173 | ||
cb666e5b LG |
174 | if (machine->ops && machine->ops->startup) { |
175 | ret = machine->ops->startup(substream); | |
db2a4165 | 176 | if (ret < 0) { |
cb666e5b LG |
177 | printk(KERN_ERR "asoc: %s startup failed\n", machine->name); |
178 | goto machine_err; | |
db2a4165 FM |
179 | } |
180 | } | |
181 | ||
db2a4165 FM |
182 | /* Check that the codec and cpu DAI's are compatible */ |
183 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
184 | runtime->hw.rate_min = | |
cb666e5b | 185 | max(codec_dai->playback.rate_min, cpu_dai->playback.rate_min); |
db2a4165 | 186 | runtime->hw.rate_max = |
cb666e5b | 187 | min(codec_dai->playback.rate_max, cpu_dai->playback.rate_max); |
db2a4165 | 188 | runtime->hw.channels_min = |
cb666e5b LG |
189 | max(codec_dai->playback.channels_min, |
190 | cpu_dai->playback.channels_min); | |
db2a4165 | 191 | runtime->hw.channels_max = |
cb666e5b LG |
192 | min(codec_dai->playback.channels_max, |
193 | cpu_dai->playback.channels_max); | |
194 | runtime->hw.formats = | |
195 | codec_dai->playback.formats & cpu_dai->playback.formats; | |
196 | runtime->hw.rates = | |
197 | codec_dai->playback.rates & cpu_dai->playback.rates; | |
db2a4165 FM |
198 | } else { |
199 | runtime->hw.rate_min = | |
cb666e5b | 200 | max(codec_dai->capture.rate_min, cpu_dai->capture.rate_min); |
db2a4165 | 201 | runtime->hw.rate_max = |
cb666e5b | 202 | min(codec_dai->capture.rate_max, cpu_dai->capture.rate_max); |
db2a4165 | 203 | runtime->hw.channels_min = |
cb666e5b LG |
204 | max(codec_dai->capture.channels_min, |
205 | cpu_dai->capture.channels_min); | |
db2a4165 | 206 | runtime->hw.channels_max = |
cb666e5b LG |
207 | min(codec_dai->capture.channels_max, |
208 | cpu_dai->capture.channels_max); | |
209 | runtime->hw.formats = | |
210 | codec_dai->capture.formats & cpu_dai->capture.formats; | |
211 | runtime->hw.rates = | |
212 | codec_dai->capture.rates & cpu_dai->capture.rates; | |
db2a4165 FM |
213 | } |
214 | ||
215 | snd_pcm_limit_hw_rates(runtime); | |
216 | if (!runtime->hw.rates) { | |
217 | printk(KERN_ERR "asoc: %s <-> %s No matching rates\n", | |
cb666e5b LG |
218 | codec_dai->name, cpu_dai->name); |
219 | goto machine_err; | |
db2a4165 FM |
220 | } |
221 | if (!runtime->hw.formats) { | |
222 | printk(KERN_ERR "asoc: %s <-> %s No matching formats\n", | |
cb666e5b LG |
223 | codec_dai->name, cpu_dai->name); |
224 | goto machine_err; | |
db2a4165 FM |
225 | } |
226 | if (!runtime->hw.channels_min || !runtime->hw.channels_max) { | |
227 | printk(KERN_ERR "asoc: %s <-> %s No matching channels\n", | |
cb666e5b LG |
228 | codec_dai->name, cpu_dai->name); |
229 | goto machine_err; | |
db2a4165 FM |
230 | } |
231 | ||
cb666e5b | 232 | dbg("asoc: %s <-> %s info:\n",codec_dai->name, cpu_dai->name); |
b5c5fd24 LG |
233 | dbg("asoc: rate mask 0x%x\n", runtime->hw.rates); |
234 | dbg("asoc: min ch %d max ch %d\n", runtime->hw.channels_min, | |
235 | runtime->hw.channels_max); | |
236 | dbg("asoc: min rate %d max rate %d\n", runtime->hw.rate_min, | |
237 | runtime->hw.rate_max); | |
db2a4165 | 238 | |
db2a4165 | 239 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
cb666e5b | 240 | cpu_dai->playback.active = codec_dai->playback.active = 1; |
db2a4165 | 241 | else |
cb666e5b LG |
242 | cpu_dai->capture.active = codec_dai->capture.active = 1; |
243 | cpu_dai->active = codec_dai->active = 1; | |
244 | cpu_dai->runtime = runtime; | |
db2a4165 FM |
245 | socdev->codec->active++; |
246 | mutex_unlock(&pcm_mutex); | |
247 | return 0; | |
248 | ||
cb666e5b | 249 | machine_err: |
db2a4165 FM |
250 | if (machine->ops && machine->ops->shutdown) |
251 | machine->ops->shutdown(substream); | |
252 | ||
cb666e5b | 253 | codec_dai_err: |
db2a4165 FM |
254 | if (platform->pcm_ops->close) |
255 | platform->pcm_ops->close(substream); | |
256 | ||
257 | platform_err: | |
cb666e5b LG |
258 | if (cpu_dai->ops.shutdown) |
259 | cpu_dai->ops.shutdown(substream); | |
db2a4165 FM |
260 | out: |
261 | mutex_unlock(&pcm_mutex); | |
262 | return ret; | |
263 | } | |
264 | ||
265 | /* | |
266 | * Power down the audio subsytem pmdown_time msecs after close is called. | |
267 | * This is to ensure there are no pops or clicks in between any music tracks | |
268 | * due to DAPM power cycling. | |
269 | */ | |
4484bb2e | 270 | static void close_delayed_work(struct work_struct *work) |
db2a4165 | 271 | { |
4484bb2e AM |
272 | struct snd_soc_device *socdev = |
273 | container_of(work, struct snd_soc_device, delayed_work.work); | |
db2a4165 FM |
274 | struct snd_soc_codec *codec = socdev->codec; |
275 | struct snd_soc_codec_dai *codec_dai; | |
276 | int i; | |
277 | ||
278 | mutex_lock(&pcm_mutex); | |
279 | for(i = 0; i < codec->num_dai; i++) { | |
280 | codec_dai = &codec->dai[i]; | |
281 | ||
282 | dbg("pop wq checking: %s status: %s waiting: %s\n", | |
283 | codec_dai->playback.stream_name, | |
284 | codec_dai->playback.active ? "active" : "inactive", | |
285 | codec_dai->pop_wait ? "yes" : "no"); | |
286 | ||
287 | /* are we waiting on this codec DAI stream */ | |
288 | if (codec_dai->pop_wait == 1) { | |
289 | ||
290 | codec_dai->pop_wait = 0; | |
291 | snd_soc_dapm_stream_event(codec, codec_dai->playback.stream_name, | |
292 | SND_SOC_DAPM_STREAM_STOP); | |
293 | ||
294 | /* power down the codec power domain if no longer active */ | |
295 | if (codec->active == 0) { | |
296 | dbg("pop wq D3 %s %s\n", codec->name, | |
297 | codec_dai->playback.stream_name); | |
298 | if (codec->dapm_event) | |
299 | codec->dapm_event(codec, SNDRV_CTL_POWER_D3hot); | |
300 | } | |
301 | } | |
302 | } | |
303 | mutex_unlock(&pcm_mutex); | |
304 | } | |
305 | ||
306 | /* | |
307 | * Called by ALSA when a PCM substream is closed. Private data can be | |
308 | * freed here. The cpu DAI, codec DAI, machine and platform are also | |
309 | * shutdown. | |
310 | */ | |
311 | static int soc_codec_close(struct snd_pcm_substream *substream) | |
312 | { | |
313 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
314 | struct snd_soc_device *socdev = rtd->socdev; | |
cb666e5b | 315 | struct snd_soc_dai_link *machine = rtd->dai; |
db2a4165 | 316 | struct snd_soc_platform *platform = socdev->platform; |
cb666e5b LG |
317 | struct snd_soc_cpu_dai *cpu_dai = machine->cpu_dai; |
318 | struct snd_soc_codec_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
319 | struct snd_soc_codec *codec = socdev->codec; |
320 | ||
321 | mutex_lock(&pcm_mutex); | |
322 | ||
323 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
cb666e5b | 324 | cpu_dai->playback.active = codec_dai->playback.active = 0; |
db2a4165 | 325 | else |
cb666e5b | 326 | cpu_dai->capture.active = codec_dai->capture.active = 0; |
db2a4165 | 327 | |
cb666e5b LG |
328 | if (codec_dai->playback.active == 0 && |
329 | codec_dai->capture.active == 0) { | |
330 | cpu_dai->active = codec_dai->active = 0; | |
db2a4165 FM |
331 | } |
332 | codec->active--; | |
333 | ||
cb666e5b LG |
334 | if (cpu_dai->ops.shutdown) |
335 | cpu_dai->ops.shutdown(substream); | |
db2a4165 | 336 | |
cb666e5b LG |
337 | if (codec_dai->ops.shutdown) |
338 | codec_dai->ops.shutdown(substream); | |
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; |
4bb09523 | 350 | schedule_delayed_work(&socdev->delayed_work, |
db2a4165 FM |
351 | msecs_to_jiffies(pmdown_time)); |
352 | } else { | |
353 | /* capture streams can be powered down now */ | |
cb666e5b LG |
354 | snd_soc_dapm_stream_event(codec, |
355 | codec_dai->capture.stream_name, SND_SOC_DAPM_STREAM_STOP); | |
db2a4165 | 356 | |
cb666e5b | 357 | if (codec->active == 0 && codec_dai->pop_wait == 0){ |
db2a4165 FM |
358 | if (codec->dapm_event) |
359 | codec->dapm_event(codec, SNDRV_CTL_POWER_D3hot); | |
360 | } | |
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; | |
cb666e5b | 376 | struct snd_soc_dai_link *machine = rtd->dai; |
db2a4165 | 377 | struct snd_soc_platform *platform = socdev->platform; |
cb666e5b LG |
378 | struct snd_soc_cpu_dai *cpu_dai = machine->cpu_dai; |
379 | struct snd_soc_codec_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
380 | struct snd_soc_codec *codec = socdev->codec; |
381 | int ret = 0; | |
382 | ||
383 | mutex_lock(&pcm_mutex); | |
cb666e5b LG |
384 | |
385 | if (machine->ops && machine->ops->prepare) { | |
386 | ret = machine->ops->prepare(substream); | |
387 | if (ret < 0) { | |
388 | printk(KERN_ERR "asoc: machine prepare error\n"); | |
389 | goto out; | |
390 | } | |
391 | } | |
392 | ||
db2a4165 FM |
393 | if (platform->pcm_ops->prepare) { |
394 | ret = platform->pcm_ops->prepare(substream); | |
a71a468a LG |
395 | if (ret < 0) { |
396 | printk(KERN_ERR "asoc: platform prepare error\n"); | |
db2a4165 | 397 | goto out; |
a71a468a | 398 | } |
db2a4165 FM |
399 | } |
400 | ||
cb666e5b LG |
401 | if (codec_dai->ops.prepare) { |
402 | ret = codec_dai->ops.prepare(substream); | |
a71a468a LG |
403 | if (ret < 0) { |
404 | printk(KERN_ERR "asoc: codec DAI prepare error\n"); | |
db2a4165 | 405 | goto out; |
a71a468a | 406 | } |
db2a4165 FM |
407 | } |
408 | ||
cb666e5b LG |
409 | if (cpu_dai->ops.prepare) { |
410 | ret = cpu_dai->ops.prepare(substream); | |
411 | if (ret < 0) { | |
412 | printk(KERN_ERR "asoc: cpu DAI prepare error\n"); | |
413 | goto out; | |
414 | } | |
415 | } | |
db2a4165 FM |
416 | |
417 | /* we only want to start a DAPM playback stream if we are not waiting | |
418 | * on an existing one stopping */ | |
cb666e5b | 419 | if (codec_dai->pop_wait) { |
db2a4165 FM |
420 | /* we are waiting for the delayed work to start */ |
421 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
cb666e5b LG |
422 | snd_soc_dapm_stream_event(socdev->codec, |
423 | codec_dai->capture.stream_name, | |
db2a4165 FM |
424 | SND_SOC_DAPM_STREAM_START); |
425 | else { | |
cb666e5b | 426 | codec_dai->pop_wait = 0; |
4484bb2e | 427 | cancel_delayed_work(&socdev->delayed_work); |
cb666e5b LG |
428 | if (codec_dai->dai_ops.digital_mute) |
429 | codec_dai->dai_ops.digital_mute(codec_dai, 0); | |
db2a4165 FM |
430 | } |
431 | } else { | |
432 | /* no delayed work - do we need to power up codec */ | |
433 | if (codec->dapm_state != SNDRV_CTL_POWER_D0) { | |
434 | ||
435 | if (codec->dapm_event) | |
436 | codec->dapm_event(codec, SNDRV_CTL_POWER_D1); | |
437 | ||
438 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
439 | snd_soc_dapm_stream_event(codec, | |
cb666e5b | 440 | codec_dai->playback.stream_name, |
db2a4165 FM |
441 | SND_SOC_DAPM_STREAM_START); |
442 | else | |
443 | snd_soc_dapm_stream_event(codec, | |
cb666e5b | 444 | codec_dai->capture.stream_name, |
db2a4165 FM |
445 | SND_SOC_DAPM_STREAM_START); |
446 | ||
447 | if (codec->dapm_event) | |
448 | codec->dapm_event(codec, SNDRV_CTL_POWER_D0); | |
cb666e5b LG |
449 | if (codec_dai->dai_ops.digital_mute) |
450 | codec_dai->dai_ops.digital_mute(codec_dai, 0); | |
db2a4165 FM |
451 | |
452 | } else { | |
453 | /* codec already powered - power on widgets */ | |
454 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
455 | snd_soc_dapm_stream_event(codec, | |
cb666e5b | 456 | codec_dai->playback.stream_name, |
db2a4165 FM |
457 | SND_SOC_DAPM_STREAM_START); |
458 | else | |
459 | snd_soc_dapm_stream_event(codec, | |
cb666e5b | 460 | codec_dai->capture.stream_name, |
db2a4165 | 461 | SND_SOC_DAPM_STREAM_START); |
cb666e5b LG |
462 | if (codec_dai->dai_ops.digital_mute) |
463 | codec_dai->dai_ops.digital_mute(codec_dai, 0); | |
db2a4165 FM |
464 | } |
465 | } | |
466 | ||
467 | out: | |
468 | mutex_unlock(&pcm_mutex); | |
469 | return ret; | |
470 | } | |
471 | ||
472 | /* | |
473 | * Called by ALSA when the hardware params are set by application. This | |
474 | * function can also be called multiple times and can allocate buffers | |
475 | * (using snd_pcm_lib_* ). It's non-atomic. | |
476 | */ | |
477 | static int soc_pcm_hw_params(struct snd_pcm_substream *substream, | |
478 | struct snd_pcm_hw_params *params) | |
479 | { | |
480 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
481 | struct snd_soc_device *socdev = rtd->socdev; | |
cb666e5b | 482 | struct snd_soc_dai_link *machine = rtd->dai; |
db2a4165 | 483 | struct snd_soc_platform *platform = socdev->platform; |
cb666e5b LG |
484 | struct snd_soc_cpu_dai *cpu_dai = machine->cpu_dai; |
485 | struct snd_soc_codec_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
486 | int ret = 0; |
487 | ||
488 | mutex_lock(&pcm_mutex); | |
489 | ||
cb666e5b LG |
490 | if (machine->ops && machine->ops->hw_params) { |
491 | ret = machine->ops->hw_params(substream, params); | |
492 | if (ret < 0) { | |
493 | printk(KERN_ERR "asoc: machine hw_params failed\n"); | |
db2a4165 | 494 | goto out; |
cb666e5b | 495 | } |
db2a4165 FM |
496 | } |
497 | ||
cb666e5b LG |
498 | if (codec_dai->ops.hw_params) { |
499 | ret = codec_dai->ops.hw_params(substream, params); | |
db2a4165 FM |
500 | if (ret < 0) { |
501 | printk(KERN_ERR "asoc: can't set codec %s hw params\n", | |
cb666e5b LG |
502 | codec_dai->name); |
503 | goto codec_err; | |
db2a4165 FM |
504 | } |
505 | } | |
506 | ||
cb666e5b LG |
507 | if (cpu_dai->ops.hw_params) { |
508 | ret = cpu_dai->ops.hw_params(substream, params); | |
db2a4165 FM |
509 | if (ret < 0) { |
510 | printk(KERN_ERR "asoc: can't set interface %s hw params\n", | |
cb666e5b | 511 | cpu_dai->name); |
db2a4165 FM |
512 | goto interface_err; |
513 | } | |
514 | } | |
515 | ||
516 | if (platform->pcm_ops->hw_params) { | |
517 | ret = platform->pcm_ops->hw_params(substream, params); | |
518 | if (ret < 0) { | |
519 | printk(KERN_ERR "asoc: can't set platform %s hw params\n", | |
520 | platform->name); | |
521 | goto platform_err; | |
522 | } | |
523 | } | |
524 | ||
db2a4165 FM |
525 | out: |
526 | mutex_unlock(&pcm_mutex); | |
527 | return ret; | |
528 | ||
db2a4165 | 529 | platform_err: |
cb666e5b LG |
530 | if (cpu_dai->ops.hw_free) |
531 | cpu_dai->ops.hw_free(substream); | |
db2a4165 FM |
532 | |
533 | interface_err: | |
cb666e5b LG |
534 | if (codec_dai->ops.hw_free) |
535 | codec_dai->ops.hw_free(substream); | |
536 | ||
537 | codec_err: | |
538 | if(machine->ops && machine->ops->hw_free) | |
539 | machine->ops->hw_free(substream); | |
db2a4165 FM |
540 | |
541 | mutex_unlock(&pcm_mutex); | |
542 | return ret; | |
543 | } | |
544 | ||
545 | /* | |
546 | * Free's resources allocated by hw_params, can be called multiple times | |
547 | */ | |
548 | static int soc_pcm_hw_free(struct snd_pcm_substream *substream) | |
549 | { | |
550 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
551 | struct snd_soc_device *socdev = rtd->socdev; | |
cb666e5b | 552 | struct snd_soc_dai_link *machine = rtd->dai; |
db2a4165 | 553 | struct snd_soc_platform *platform = socdev->platform; |
cb666e5b LG |
554 | struct snd_soc_cpu_dai *cpu_dai = machine->cpu_dai; |
555 | struct snd_soc_codec_dai *codec_dai = machine->codec_dai; | |
db2a4165 | 556 | struct snd_soc_codec *codec = socdev->codec; |
db2a4165 FM |
557 | |
558 | mutex_lock(&pcm_mutex); | |
559 | ||
560 | /* apply codec digital mute */ | |
cb666e5b LG |
561 | if (!codec->active && codec_dai->dai_ops.digital_mute) |
562 | codec_dai->dai_ops.digital_mute(codec_dai, 1); | |
db2a4165 FM |
563 | |
564 | /* free any machine hw params */ | |
565 | if (machine->ops && machine->ops->hw_free) | |
566 | machine->ops->hw_free(substream); | |
567 | ||
568 | /* free any DMA resources */ | |
569 | if (platform->pcm_ops->hw_free) | |
570 | platform->pcm_ops->hw_free(substream); | |
571 | ||
572 | /* now free hw params for the DAI's */ | |
cb666e5b LG |
573 | if (codec_dai->ops.hw_free) |
574 | codec_dai->ops.hw_free(substream); | |
db2a4165 | 575 | |
cb666e5b LG |
576 | if (cpu_dai->ops.hw_free) |
577 | cpu_dai->ops.hw_free(substream); | |
db2a4165 FM |
578 | |
579 | mutex_unlock(&pcm_mutex); | |
580 | return 0; | |
581 | } | |
582 | ||
583 | static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd) | |
584 | { | |
585 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
586 | struct snd_soc_device *socdev = rtd->socdev; | |
cb666e5b | 587 | struct snd_soc_dai_link *machine = rtd->dai; |
db2a4165 | 588 | struct snd_soc_platform *platform = socdev->platform; |
cb666e5b LG |
589 | struct snd_soc_cpu_dai *cpu_dai = machine->cpu_dai; |
590 | struct snd_soc_codec_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
591 | int ret; |
592 | ||
cb666e5b LG |
593 | if (codec_dai->ops.trigger) { |
594 | ret = codec_dai->ops.trigger(substream, cmd); | |
db2a4165 FM |
595 | if (ret < 0) |
596 | return ret; | |
597 | } | |
598 | ||
599 | if (platform->pcm_ops->trigger) { | |
600 | ret = platform->pcm_ops->trigger(substream, cmd); | |
601 | if (ret < 0) | |
602 | return ret; | |
603 | } | |
604 | ||
cb666e5b LG |
605 | if (cpu_dai->ops.trigger) { |
606 | ret = cpu_dai->ops.trigger(substream, cmd); | |
db2a4165 FM |
607 | if (ret < 0) |
608 | return ret; | |
609 | } | |
610 | return 0; | |
611 | } | |
612 | ||
613 | /* ASoC PCM operations */ | |
614 | static struct snd_pcm_ops soc_pcm_ops = { | |
615 | .open = soc_pcm_open, | |
616 | .close = soc_codec_close, | |
617 | .hw_params = soc_pcm_hw_params, | |
618 | .hw_free = soc_pcm_hw_free, | |
619 | .prepare = soc_pcm_prepare, | |
620 | .trigger = soc_pcm_trigger, | |
621 | }; | |
622 | ||
623 | #ifdef CONFIG_PM | |
624 | /* powers down audio subsystem for suspend */ | |
625 | static int soc_suspend(struct platform_device *pdev, pm_message_t state) | |
626 | { | |
627 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
628 | struct snd_soc_machine *machine = socdev->machine; | |
629 | struct snd_soc_platform *platform = socdev->platform; | |
630 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; | |
631 | struct snd_soc_codec *codec = socdev->codec; | |
632 | int i; | |
633 | ||
634 | /* mute any active DAC's */ | |
635 | for(i = 0; i < machine->num_links; i++) { | |
636 | struct snd_soc_codec_dai *dai = machine->dai_link[i].codec_dai; | |
cb666e5b LG |
637 | if (dai->dai_ops.digital_mute && dai->playback.active) |
638 | dai->dai_ops.digital_mute(dai, 1); | |
db2a4165 FM |
639 | } |
640 | ||
641 | if (machine->suspend_pre) | |
642 | machine->suspend_pre(pdev, state); | |
643 | ||
644 | for(i = 0; i < machine->num_links; i++) { | |
645 | struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai; | |
646 | if (cpu_dai->suspend && cpu_dai->type != SND_SOC_DAI_AC97) | |
647 | cpu_dai->suspend(pdev, cpu_dai); | |
648 | if (platform->suspend) | |
649 | platform->suspend(pdev, cpu_dai); | |
650 | } | |
651 | ||
652 | /* close any waiting streams and save state */ | |
965ac42c | 653 | run_delayed_work(&socdev->delayed_work); |
db2a4165 FM |
654 | codec->suspend_dapm_state = codec->dapm_state; |
655 | ||
656 | for(i = 0; i < codec->num_dai; i++) { | |
657 | char *stream = codec->dai[i].playback.stream_name; | |
658 | if (stream != NULL) | |
659 | snd_soc_dapm_stream_event(codec, stream, | |
660 | SND_SOC_DAPM_STREAM_SUSPEND); | |
661 | stream = codec->dai[i].capture.stream_name; | |
662 | if (stream != NULL) | |
663 | snd_soc_dapm_stream_event(codec, stream, | |
664 | SND_SOC_DAPM_STREAM_SUSPEND); | |
665 | } | |
666 | ||
667 | if (codec_dev->suspend) | |
668 | codec_dev->suspend(pdev, state); | |
669 | ||
670 | for(i = 0; i < machine->num_links; i++) { | |
671 | struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai; | |
672 | if (cpu_dai->suspend && cpu_dai->type == SND_SOC_DAI_AC97) | |
673 | cpu_dai->suspend(pdev, cpu_dai); | |
674 | } | |
675 | ||
676 | if (machine->suspend_post) | |
677 | machine->suspend_post(pdev, state); | |
678 | ||
679 | return 0; | |
680 | } | |
681 | ||
682 | /* powers up audio subsystem after a suspend */ | |
683 | static int soc_resume(struct platform_device *pdev) | |
684 | { | |
685 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
686 | struct snd_soc_machine *machine = socdev->machine; | |
687 | struct snd_soc_platform *platform = socdev->platform; | |
688 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; | |
689 | struct snd_soc_codec *codec = socdev->codec; | |
690 | int i; | |
691 | ||
692 | if (machine->resume_pre) | |
693 | machine->resume_pre(pdev); | |
694 | ||
695 | for(i = 0; i < machine->num_links; i++) { | |
696 | struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai; | |
697 | if (cpu_dai->resume && cpu_dai->type == SND_SOC_DAI_AC97) | |
698 | cpu_dai->resume(pdev, cpu_dai); | |
699 | } | |
700 | ||
701 | if (codec_dev->resume) | |
702 | codec_dev->resume(pdev); | |
703 | ||
704 | for(i = 0; i < codec->num_dai; i++) { | |
705 | char* stream = codec->dai[i].playback.stream_name; | |
706 | if (stream != NULL) | |
707 | snd_soc_dapm_stream_event(codec, stream, | |
708 | SND_SOC_DAPM_STREAM_RESUME); | |
709 | stream = codec->dai[i].capture.stream_name; | |
710 | if (stream != NULL) | |
711 | snd_soc_dapm_stream_event(codec, stream, | |
712 | SND_SOC_DAPM_STREAM_RESUME); | |
713 | } | |
714 | ||
715 | /* unmute any active DAC's */ | |
716 | for(i = 0; i < machine->num_links; i++) { | |
717 | struct snd_soc_codec_dai *dai = machine->dai_link[i].codec_dai; | |
cb666e5b LG |
718 | if (dai->dai_ops.digital_mute && dai->playback.active) |
719 | dai->dai_ops.digital_mute(dai, 0); | |
db2a4165 FM |
720 | } |
721 | ||
722 | for(i = 0; i < machine->num_links; i++) { | |
723 | struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai; | |
724 | if (cpu_dai->resume && cpu_dai->type != SND_SOC_DAI_AC97) | |
725 | cpu_dai->resume(pdev, cpu_dai); | |
726 | if (platform->resume) | |
727 | platform->resume(pdev, cpu_dai); | |
728 | } | |
729 | ||
730 | if (machine->resume_post) | |
731 | machine->resume_post(pdev); | |
732 | ||
733 | return 0; | |
734 | } | |
735 | ||
736 | #else | |
737 | #define soc_suspend NULL | |
738 | #define soc_resume NULL | |
739 | #endif | |
740 | ||
741 | /* probes a new socdev */ | |
742 | static int soc_probe(struct platform_device *pdev) | |
743 | { | |
744 | int ret = 0, i; | |
745 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
746 | struct snd_soc_machine *machine = socdev->machine; | |
747 | struct snd_soc_platform *platform = socdev->platform; | |
748 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; | |
749 | ||
750 | if (machine->probe) { | |
751 | ret = machine->probe(pdev); | |
752 | if(ret < 0) | |
753 | return ret; | |
754 | } | |
755 | ||
756 | for (i = 0; i < machine->num_links; i++) { | |
757 | struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai; | |
758 | if (cpu_dai->probe) { | |
759 | ret = cpu_dai->probe(pdev); | |
760 | if(ret < 0) | |
761 | goto cpu_dai_err; | |
762 | } | |
763 | } | |
764 | ||
765 | if (codec_dev->probe) { | |
766 | ret = codec_dev->probe(pdev); | |
767 | if(ret < 0) | |
768 | goto cpu_dai_err; | |
769 | } | |
770 | ||
771 | if (platform->probe) { | |
772 | ret = platform->probe(pdev); | |
773 | if(ret < 0) | |
774 | goto platform_err; | |
775 | } | |
776 | ||
777 | /* DAPM stream work */ | |
4484bb2e | 778 | INIT_DELAYED_WORK(&socdev->delayed_work, close_delayed_work); |
db2a4165 FM |
779 | return 0; |
780 | ||
db2a4165 FM |
781 | platform_err: |
782 | if (codec_dev->remove) | |
783 | codec_dev->remove(pdev); | |
784 | ||
785 | cpu_dai_err: | |
18b9b3d9 | 786 | for (i--; i >= 0; i--) { |
db2a4165 FM |
787 | struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai; |
788 | if (cpu_dai->remove) | |
789 | cpu_dai->remove(pdev); | |
790 | } | |
791 | ||
792 | if (machine->remove) | |
793 | machine->remove(pdev); | |
794 | ||
795 | return ret; | |
796 | } | |
797 | ||
798 | /* removes a socdev */ | |
799 | static int soc_remove(struct platform_device *pdev) | |
800 | { | |
801 | int i; | |
802 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
803 | struct snd_soc_machine *machine = socdev->machine; | |
804 | struct snd_soc_platform *platform = socdev->platform; | |
805 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; | |
806 | ||
965ac42c LG |
807 | run_delayed_work(&socdev->delayed_work); |
808 | ||
db2a4165 FM |
809 | if (platform->remove) |
810 | platform->remove(pdev); | |
811 | ||
812 | if (codec_dev->remove) | |
813 | codec_dev->remove(pdev); | |
814 | ||
815 | for (i = 0; i < machine->num_links; i++) { | |
816 | struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai; | |
817 | if (cpu_dai->remove) | |
818 | cpu_dai->remove(pdev); | |
819 | } | |
820 | ||
821 | if (machine->remove) | |
822 | machine->remove(pdev); | |
823 | ||
824 | return 0; | |
825 | } | |
826 | ||
827 | /* ASoC platform driver */ | |
828 | static struct platform_driver soc_driver = { | |
829 | .driver = { | |
830 | .name = "soc-audio", | |
831 | }, | |
832 | .probe = soc_probe, | |
833 | .remove = soc_remove, | |
834 | .suspend = soc_suspend, | |
835 | .resume = soc_resume, | |
836 | }; | |
837 | ||
838 | /* create a new pcm */ | |
839 | static int soc_new_pcm(struct snd_soc_device *socdev, | |
840 | struct snd_soc_dai_link *dai_link, int num) | |
841 | { | |
842 | struct snd_soc_codec *codec = socdev->codec; | |
843 | struct snd_soc_codec_dai *codec_dai = dai_link->codec_dai; | |
844 | struct snd_soc_cpu_dai *cpu_dai = dai_link->cpu_dai; | |
845 | struct snd_soc_pcm_runtime *rtd; | |
846 | struct snd_pcm *pcm; | |
847 | char new_name[64]; | |
848 | int ret = 0, playback = 0, capture = 0; | |
849 | ||
850 | rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime), GFP_KERNEL); | |
851 | if (rtd == NULL) | |
852 | return -ENOMEM; | |
cb666e5b LG |
853 | |
854 | rtd->dai = dai_link; | |
db2a4165 | 855 | rtd->socdev = socdev; |
cb666e5b | 856 | codec_dai->codec = socdev->codec; |
db2a4165 FM |
857 | |
858 | /* check client and interface hw capabilities */ | |
859 | sprintf(new_name, "%s %s-%s-%d",dai_link->stream_name, codec_dai->name, | |
860 | get_dai_name(cpu_dai->type), num); | |
861 | ||
862 | if (codec_dai->playback.channels_min) | |
863 | playback = 1; | |
864 | if (codec_dai->capture.channels_min) | |
865 | capture = 1; | |
866 | ||
867 | ret = snd_pcm_new(codec->card, new_name, codec->pcm_devs++, playback, | |
868 | capture, &pcm); | |
869 | if (ret < 0) { | |
870 | printk(KERN_ERR "asoc: can't create pcm for codec %s\n", codec->name); | |
871 | kfree(rtd); | |
872 | return ret; | |
873 | } | |
874 | ||
875 | pcm->private_data = rtd; | |
876 | soc_pcm_ops.mmap = socdev->platform->pcm_ops->mmap; | |
877 | soc_pcm_ops.pointer = socdev->platform->pcm_ops->pointer; | |
878 | soc_pcm_ops.ioctl = socdev->platform->pcm_ops->ioctl; | |
879 | soc_pcm_ops.copy = socdev->platform->pcm_ops->copy; | |
880 | soc_pcm_ops.silence = socdev->platform->pcm_ops->silence; | |
881 | soc_pcm_ops.ack = socdev->platform->pcm_ops->ack; | |
882 | soc_pcm_ops.page = socdev->platform->pcm_ops->page; | |
883 | ||
884 | if (playback) | |
885 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &soc_pcm_ops); | |
886 | ||
887 | if (capture) | |
888 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &soc_pcm_ops); | |
889 | ||
890 | ret = socdev->platform->pcm_new(codec->card, codec_dai, pcm); | |
891 | if (ret < 0) { | |
892 | printk(KERN_ERR "asoc: platform pcm constructor failed\n"); | |
893 | kfree(rtd); | |
894 | return ret; | |
895 | } | |
896 | ||
897 | pcm->private_free = socdev->platform->pcm_free; | |
898 | printk(KERN_INFO "asoc: %s <-> %s mapping ok\n", codec_dai->name, | |
899 | cpu_dai->name); | |
900 | return ret; | |
901 | } | |
902 | ||
903 | /* codec register dump */ | |
904 | static ssize_t codec_reg_show(struct device *dev, | |
905 | struct device_attribute *attr, char *buf) | |
906 | { | |
907 | struct snd_soc_device *devdata = dev_get_drvdata(dev); | |
908 | struct snd_soc_codec *codec = devdata->codec; | |
909 | int i, step = 1, count = 0; | |
910 | ||
911 | if (!codec->reg_cache_size) | |
912 | return 0; | |
913 | ||
914 | if (codec->reg_cache_step) | |
915 | step = codec->reg_cache_step; | |
916 | ||
917 | count += sprintf(buf, "%s registers\n", codec->name); | |
918 | for(i = 0; i < codec->reg_cache_size; i += step) | |
919 | count += sprintf(buf + count, "%2x: %4x\n", i, codec->read(codec, i)); | |
920 | ||
921 | return count; | |
922 | } | |
923 | static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL); | |
924 | ||
925 | /** | |
926 | * snd_soc_new_ac97_codec - initailise AC97 device | |
927 | * @codec: audio codec | |
928 | * @ops: AC97 bus operations | |
929 | * @num: AC97 codec number | |
930 | * | |
931 | * Initialises AC97 codec resources for use by ad-hoc devices only. | |
932 | */ | |
933 | int snd_soc_new_ac97_codec(struct snd_soc_codec *codec, | |
934 | struct snd_ac97_bus_ops *ops, int num) | |
935 | { | |
936 | mutex_lock(&codec->mutex); | |
937 | ||
938 | codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL); | |
939 | if (codec->ac97 == NULL) { | |
940 | mutex_unlock(&codec->mutex); | |
941 | return -ENOMEM; | |
942 | } | |
943 | ||
944 | codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL); | |
945 | if (codec->ac97->bus == NULL) { | |
946 | kfree(codec->ac97); | |
947 | codec->ac97 = NULL; | |
948 | mutex_unlock(&codec->mutex); | |
949 | return -ENOMEM; | |
950 | } | |
951 | ||
952 | codec->ac97->bus->ops = ops; | |
953 | codec->ac97->num = num; | |
954 | mutex_unlock(&codec->mutex); | |
955 | return 0; | |
956 | } | |
957 | EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec); | |
958 | ||
959 | /** | |
960 | * snd_soc_free_ac97_codec - free AC97 codec device | |
961 | * @codec: audio codec | |
962 | * | |
963 | * Frees AC97 codec device resources. | |
964 | */ | |
965 | void snd_soc_free_ac97_codec(struct snd_soc_codec *codec) | |
966 | { | |
967 | mutex_lock(&codec->mutex); | |
968 | kfree(codec->ac97->bus); | |
969 | kfree(codec->ac97); | |
970 | codec->ac97 = NULL; | |
971 | mutex_unlock(&codec->mutex); | |
972 | } | |
973 | EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec); | |
974 | ||
975 | /** | |
976 | * snd_soc_update_bits - update codec register bits | |
977 | * @codec: audio codec | |
978 | * @reg: codec register | |
979 | * @mask: register mask | |
980 | * @value: new value | |
981 | * | |
982 | * Writes new register value. | |
983 | * | |
984 | * Returns 1 for change else 0. | |
985 | */ | |
986 | int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg, | |
987 | unsigned short mask, unsigned short value) | |
988 | { | |
989 | int change; | |
990 | unsigned short old, new; | |
991 | ||
992 | mutex_lock(&io_mutex); | |
993 | old = snd_soc_read(codec, reg); | |
994 | new = (old & ~mask) | value; | |
995 | change = old != new; | |
996 | if (change) | |
997 | snd_soc_write(codec, reg, new); | |
998 | ||
999 | mutex_unlock(&io_mutex); | |
1000 | return change; | |
1001 | } | |
1002 | EXPORT_SYMBOL_GPL(snd_soc_update_bits); | |
1003 | ||
1004 | /** | |
1005 | * snd_soc_test_bits - test register for change | |
1006 | * @codec: audio codec | |
1007 | * @reg: codec register | |
1008 | * @mask: register mask | |
1009 | * @value: new value | |
1010 | * | |
1011 | * Tests a register with a new value and checks if the new value is | |
1012 | * different from the old value. | |
1013 | * | |
1014 | * Returns 1 for change else 0. | |
1015 | */ | |
1016 | int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg, | |
1017 | unsigned short mask, unsigned short value) | |
1018 | { | |
1019 | int change; | |
1020 | unsigned short old, new; | |
1021 | ||
1022 | mutex_lock(&io_mutex); | |
1023 | old = snd_soc_read(codec, reg); | |
1024 | new = (old & ~mask) | value; | |
1025 | change = old != new; | |
1026 | mutex_unlock(&io_mutex); | |
1027 | ||
1028 | return change; | |
1029 | } | |
1030 | EXPORT_SYMBOL_GPL(snd_soc_test_bits); | |
1031 | ||
db2a4165 FM |
1032 | /** |
1033 | * snd_soc_new_pcms - create new sound card and pcms | |
1034 | * @socdev: the SoC audio device | |
1035 | * | |
1036 | * Create a new sound card based upon the codec and interface pcms. | |
1037 | * | |
1038 | * Returns 0 for success, else error. | |
1039 | */ | |
bc7320c5 | 1040 | int snd_soc_new_pcms(struct snd_soc_device *socdev, int idx, const char *xid) |
db2a4165 FM |
1041 | { |
1042 | struct snd_soc_codec *codec = socdev->codec; | |
1043 | struct snd_soc_machine *machine = socdev->machine; | |
1044 | int ret = 0, i; | |
1045 | ||
1046 | mutex_lock(&codec->mutex); | |
1047 | ||
1048 | /* register a sound card */ | |
1049 | codec->card = snd_card_new(idx, xid, codec->owner, 0); | |
1050 | if (!codec->card) { | |
1051 | printk(KERN_ERR "asoc: can't create sound card for codec %s\n", | |
1052 | codec->name); | |
1053 | mutex_unlock(&codec->mutex); | |
1054 | return -ENODEV; | |
1055 | } | |
1056 | ||
1057 | codec->card->dev = socdev->dev; | |
1058 | codec->card->private_data = codec; | |
1059 | strncpy(codec->card->driver, codec->name, sizeof(codec->card->driver)); | |
1060 | ||
1061 | /* create the pcms */ | |
1062 | for(i = 0; i < machine->num_links; i++) { | |
1063 | ret = soc_new_pcm(socdev, &machine->dai_link[i], i); | |
1064 | if (ret < 0) { | |
1065 | printk(KERN_ERR "asoc: can't create pcm %s\n", | |
1066 | machine->dai_link[i].stream_name); | |
1067 | mutex_unlock(&codec->mutex); | |
1068 | return ret; | |
1069 | } | |
1070 | } | |
1071 | ||
1072 | mutex_unlock(&codec->mutex); | |
1073 | return ret; | |
1074 | } | |
1075 | EXPORT_SYMBOL_GPL(snd_soc_new_pcms); | |
1076 | ||
1077 | /** | |
1078 | * snd_soc_register_card - register sound card | |
1079 | * @socdev: the SoC audio device | |
1080 | * | |
1081 | * Register a SoC sound card. Also registers an AC97 device if the | |
1082 | * codec is AC97 for ad hoc devices. | |
1083 | * | |
1084 | * Returns 0 for success, else error. | |
1085 | */ | |
1086 | int snd_soc_register_card(struct snd_soc_device *socdev) | |
1087 | { | |
1088 | struct snd_soc_codec *codec = socdev->codec; | |
1089 | struct snd_soc_machine *machine = socdev->machine; | |
12e74f7d | 1090 | int ret = 0, i, ac97 = 0, err = 0; |
db2a4165 FM |
1091 | |
1092 | mutex_lock(&codec->mutex); | |
1093 | for(i = 0; i < machine->num_links; i++) { | |
12e74f7d LG |
1094 | if (socdev->machine->dai_link[i].init) { |
1095 | err = socdev->machine->dai_link[i].init(codec); | |
1096 | if (err < 0) { | |
1097 | printk(KERN_ERR "asoc: failed to init %s\n", | |
1098 | socdev->machine->dai_link[i].stream_name); | |
1099 | continue; | |
1100 | } | |
1101 | } | |
db2a4165 FM |
1102 | if (socdev->machine->dai_link[i].cpu_dai->type == SND_SOC_DAI_AC97) |
1103 | ac97 = 1; | |
1104 | } | |
1105 | snprintf(codec->card->shortname, sizeof(codec->card->shortname), | |
1106 | "%s", machine->name); | |
1107 | snprintf(codec->card->longname, sizeof(codec->card->longname), | |
1108 | "%s (%s)", machine->name, codec->name); | |
1109 | ||
1110 | ret = snd_card_register(codec->card); | |
1111 | if (ret < 0) { | |
1112 | printk(KERN_ERR "asoc: failed to register soundcard for codec %s\n", | |
1113 | codec->name); | |
12e74f7d | 1114 | goto out; |
db2a4165 FM |
1115 | } |
1116 | ||
1117 | #ifdef CONFIG_SND_SOC_AC97_BUS | |
12e74f7d LG |
1118 | if (ac97) { |
1119 | ret = soc_ac97_dev_register(codec); | |
1120 | if (ret < 0) { | |
1121 | printk(KERN_ERR "asoc: AC97 device register failed\n"); | |
1122 | snd_card_free(codec->card); | |
1123 | goto out; | |
1124 | } | |
1125 | } | |
db2a4165 FM |
1126 | #endif |
1127 | ||
12e74f7d LG |
1128 | err = snd_soc_dapm_sys_add(socdev->dev); |
1129 | if (err < 0) | |
1130 | printk(KERN_WARNING "asoc: failed to add dapm sysfs entries\n"); | |
1131 | ||
1132 | err = device_create_file(socdev->dev, &dev_attr_codec_reg); | |
1133 | if (err < 0) | |
1134 | printk(KERN_WARNING "asoc: failed to add codec sysfs entries\n"); | |
1135 | out: | |
db2a4165 FM |
1136 | mutex_unlock(&codec->mutex); |
1137 | return ret; | |
1138 | } | |
1139 | EXPORT_SYMBOL_GPL(snd_soc_register_card); | |
1140 | ||
1141 | /** | |
1142 | * snd_soc_free_pcms - free sound card and pcms | |
1143 | * @socdev: the SoC audio device | |
1144 | * | |
1145 | * Frees sound card and pcms associated with the socdev. | |
1146 | * Also unregister the codec if it is an AC97 device. | |
1147 | */ | |
1148 | void snd_soc_free_pcms(struct snd_soc_device *socdev) | |
1149 | { | |
1150 | struct snd_soc_codec *codec = socdev->codec; | |
1151 | ||
1152 | mutex_lock(&codec->mutex); | |
1153 | #ifdef CONFIG_SND_SOC_AC97_BUS | |
1154 | if (codec->ac97) | |
1155 | soc_ac97_dev_unregister(codec); | |
1156 | #endif | |
1157 | ||
1158 | if (codec->card) | |
1159 | snd_card_free(codec->card); | |
1160 | device_remove_file(socdev->dev, &dev_attr_codec_reg); | |
1161 | mutex_unlock(&codec->mutex); | |
1162 | } | |
1163 | EXPORT_SYMBOL_GPL(snd_soc_free_pcms); | |
1164 | ||
1165 | /** | |
1166 | * snd_soc_set_runtime_hwparams - set the runtime hardware parameters | |
1167 | * @substream: the pcm substream | |
1168 | * @hw: the hardware parameters | |
1169 | * | |
1170 | * Sets the substream runtime hardware parameters. | |
1171 | */ | |
1172 | int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream, | |
1173 | const struct snd_pcm_hardware *hw) | |
1174 | { | |
1175 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1176 | runtime->hw.info = hw->info; | |
1177 | runtime->hw.formats = hw->formats; | |
1178 | runtime->hw.period_bytes_min = hw->period_bytes_min; | |
1179 | runtime->hw.period_bytes_max = hw->period_bytes_max; | |
1180 | runtime->hw.periods_min = hw->periods_min; | |
1181 | runtime->hw.periods_max = hw->periods_max; | |
1182 | runtime->hw.buffer_bytes_max = hw->buffer_bytes_max; | |
1183 | runtime->hw.fifo_size = hw->fifo_size; | |
1184 | return 0; | |
1185 | } | |
1186 | EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams); | |
1187 | ||
1188 | /** | |
1189 | * snd_soc_cnew - create new control | |
1190 | * @_template: control template | |
1191 | * @data: control private data | |
1192 | * @lnng_name: control long name | |
1193 | * | |
1194 | * Create a new mixer control from a template control. | |
1195 | * | |
1196 | * Returns 0 for success, else error. | |
1197 | */ | |
1198 | struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template, | |
1199 | void *data, char *long_name) | |
1200 | { | |
1201 | struct snd_kcontrol_new template; | |
1202 | ||
1203 | memcpy(&template, _template, sizeof(template)); | |
1204 | if (long_name) | |
1205 | template.name = long_name; | |
1206 | template.access = SNDRV_CTL_ELEM_ACCESS_READWRITE; | |
1207 | template.index = 0; | |
1208 | ||
1209 | return snd_ctl_new1(&template, data); | |
1210 | } | |
1211 | EXPORT_SYMBOL_GPL(snd_soc_cnew); | |
1212 | ||
1213 | /** | |
1214 | * snd_soc_info_enum_double - enumerated double mixer info callback | |
1215 | * @kcontrol: mixer control | |
1216 | * @uinfo: control element information | |
1217 | * | |
1218 | * Callback to provide information about a double enumerated | |
1219 | * mixer control. | |
1220 | * | |
1221 | * Returns 0 for success. | |
1222 | */ | |
1223 | int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol, | |
1224 | struct snd_ctl_elem_info *uinfo) | |
1225 | { | |
1226 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1227 | ||
1228 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; | |
1229 | uinfo->count = e->shift_l == e->shift_r ? 1 : 2; | |
1230 | uinfo->value.enumerated.items = e->mask; | |
1231 | ||
1232 | if (uinfo->value.enumerated.item > e->mask - 1) | |
1233 | uinfo->value.enumerated.item = e->mask - 1; | |
1234 | strcpy(uinfo->value.enumerated.name, | |
1235 | e->texts[uinfo->value.enumerated.item]); | |
1236 | return 0; | |
1237 | } | |
1238 | EXPORT_SYMBOL_GPL(snd_soc_info_enum_double); | |
1239 | ||
1240 | /** | |
1241 | * snd_soc_get_enum_double - enumerated double mixer get callback | |
1242 | * @kcontrol: mixer control | |
1243 | * @uinfo: control element information | |
1244 | * | |
1245 | * Callback to get the value of a double enumerated mixer. | |
1246 | * | |
1247 | * Returns 0 for success. | |
1248 | */ | |
1249 | int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol, | |
1250 | struct snd_ctl_elem_value *ucontrol) | |
1251 | { | |
1252 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1253 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1254 | unsigned short val, bitmask; | |
1255 | ||
1256 | for (bitmask = 1; bitmask < e->mask; bitmask <<= 1) | |
1257 | ; | |
1258 | val = snd_soc_read(codec, e->reg); | |
1259 | ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1); | |
1260 | if (e->shift_l != e->shift_r) | |
1261 | ucontrol->value.enumerated.item[1] = | |
1262 | (val >> e->shift_r) & (bitmask - 1); | |
1263 | ||
1264 | return 0; | |
1265 | } | |
1266 | EXPORT_SYMBOL_GPL(snd_soc_get_enum_double); | |
1267 | ||
1268 | /** | |
1269 | * snd_soc_put_enum_double - enumerated double mixer put callback | |
1270 | * @kcontrol: mixer control | |
1271 | * @uinfo: control element information | |
1272 | * | |
1273 | * Callback to set the value of a double enumerated mixer. | |
1274 | * | |
1275 | * Returns 0 for success. | |
1276 | */ | |
1277 | int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol, | |
1278 | struct snd_ctl_elem_value *ucontrol) | |
1279 | { | |
1280 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1281 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1282 | unsigned short val; | |
1283 | unsigned short mask, bitmask; | |
1284 | ||
1285 | for (bitmask = 1; bitmask < e->mask; bitmask <<= 1) | |
1286 | ; | |
1287 | if (ucontrol->value.enumerated.item[0] > e->mask - 1) | |
1288 | return -EINVAL; | |
1289 | val = ucontrol->value.enumerated.item[0] << e->shift_l; | |
1290 | mask = (bitmask - 1) << e->shift_l; | |
1291 | if (e->shift_l != e->shift_r) { | |
1292 | if (ucontrol->value.enumerated.item[1] > e->mask - 1) | |
1293 | return -EINVAL; | |
1294 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
1295 | mask |= (bitmask - 1) << e->shift_r; | |
1296 | } | |
1297 | ||
1298 | return snd_soc_update_bits(codec, e->reg, mask, val); | |
1299 | } | |
1300 | EXPORT_SYMBOL_GPL(snd_soc_put_enum_double); | |
1301 | ||
1302 | /** | |
1303 | * snd_soc_info_enum_ext - external enumerated single mixer info callback | |
1304 | * @kcontrol: mixer control | |
1305 | * @uinfo: control element information | |
1306 | * | |
1307 | * Callback to provide information about an external enumerated | |
1308 | * single mixer. | |
1309 | * | |
1310 | * Returns 0 for success. | |
1311 | */ | |
1312 | int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol, | |
1313 | struct snd_ctl_elem_info *uinfo) | |
1314 | { | |
1315 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1316 | ||
1317 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; | |
1318 | uinfo->count = 1; | |
1319 | uinfo->value.enumerated.items = e->mask; | |
1320 | ||
1321 | if (uinfo->value.enumerated.item > e->mask - 1) | |
1322 | uinfo->value.enumerated.item = e->mask - 1; | |
1323 | strcpy(uinfo->value.enumerated.name, | |
1324 | e->texts[uinfo->value.enumerated.item]); | |
1325 | return 0; | |
1326 | } | |
1327 | EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext); | |
1328 | ||
1329 | /** | |
1330 | * snd_soc_info_volsw_ext - external single mixer info callback | |
1331 | * @kcontrol: mixer control | |
1332 | * @uinfo: control element information | |
1333 | * | |
1334 | * Callback to provide information about a single external mixer control. | |
1335 | * | |
1336 | * Returns 0 for success. | |
1337 | */ | |
1338 | int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol, | |
1339 | struct snd_ctl_elem_info *uinfo) | |
1340 | { | |
1341 | int mask = kcontrol->private_value; | |
1342 | ||
1343 | uinfo->type = | |
1344 | mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER; | |
1345 | uinfo->count = 1; | |
1346 | uinfo->value.integer.min = 0; | |
1347 | uinfo->value.integer.max = mask; | |
1348 | return 0; | |
1349 | } | |
1350 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext); | |
1351 | ||
1352 | /** | |
1353 | * snd_soc_info_bool_ext - external single boolean mixer info callback | |
1354 | * @kcontrol: mixer control | |
1355 | * @uinfo: control element information | |
1356 | * | |
1357 | * Callback to provide information about a single boolean external mixer control. | |
1358 | * | |
1359 | * Returns 0 for success. | |
1360 | */ | |
1361 | int snd_soc_info_bool_ext(struct snd_kcontrol *kcontrol, | |
1362 | struct snd_ctl_elem_info *uinfo) | |
1363 | { | |
1364 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1365 | uinfo->count = 1; | |
1366 | uinfo->value.integer.min = 0; | |
1367 | uinfo->value.integer.max = 1; | |
1368 | return 0; | |
1369 | } | |
1370 | EXPORT_SYMBOL_GPL(snd_soc_info_bool_ext); | |
1371 | ||
1372 | /** | |
1373 | * snd_soc_info_volsw - single mixer info callback | |
1374 | * @kcontrol: mixer control | |
1375 | * @uinfo: control element information | |
1376 | * | |
1377 | * Callback to provide information about a single mixer control. | |
1378 | * | |
1379 | * Returns 0 for success. | |
1380 | */ | |
1381 | int snd_soc_info_volsw(struct snd_kcontrol *kcontrol, | |
1382 | struct snd_ctl_elem_info *uinfo) | |
1383 | { | |
1384 | int mask = (kcontrol->private_value >> 16) & 0xff; | |
1385 | int shift = (kcontrol->private_value >> 8) & 0x0f; | |
1386 | int rshift = (kcontrol->private_value >> 12) & 0x0f; | |
1387 | ||
1388 | uinfo->type = | |
1389 | mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER; | |
1390 | uinfo->count = shift == rshift ? 1 : 2; | |
1391 | uinfo->value.integer.min = 0; | |
1392 | uinfo->value.integer.max = mask; | |
1393 | return 0; | |
1394 | } | |
1395 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw); | |
1396 | ||
1397 | /** | |
1398 | * snd_soc_get_volsw - single mixer get callback | |
1399 | * @kcontrol: mixer control | |
1400 | * @uinfo: control element information | |
1401 | * | |
1402 | * Callback to get the value of a single mixer control. | |
1403 | * | |
1404 | * Returns 0 for success. | |
1405 | */ | |
1406 | int snd_soc_get_volsw(struct snd_kcontrol *kcontrol, | |
1407 | struct snd_ctl_elem_value *ucontrol) | |
1408 | { | |
1409 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1410 | int reg = kcontrol->private_value & 0xff; | |
1411 | int shift = (kcontrol->private_value >> 8) & 0x0f; | |
1412 | int rshift = (kcontrol->private_value >> 12) & 0x0f; | |
1413 | int mask = (kcontrol->private_value >> 16) & 0xff; | |
1414 | int invert = (kcontrol->private_value >> 24) & 0x01; | |
1415 | ||
1416 | ucontrol->value.integer.value[0] = | |
1417 | (snd_soc_read(codec, reg) >> shift) & mask; | |
1418 | if (shift != rshift) | |
1419 | ucontrol->value.integer.value[1] = | |
1420 | (snd_soc_read(codec, reg) >> rshift) & mask; | |
1421 | if (invert) { | |
1422 | ucontrol->value.integer.value[0] = | |
1423 | mask - ucontrol->value.integer.value[0]; | |
1424 | if (shift != rshift) | |
1425 | ucontrol->value.integer.value[1] = | |
1426 | mask - ucontrol->value.integer.value[1]; | |
1427 | } | |
1428 | ||
1429 | return 0; | |
1430 | } | |
1431 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw); | |
1432 | ||
1433 | /** | |
1434 | * snd_soc_put_volsw - single mixer put callback | |
1435 | * @kcontrol: mixer control | |
1436 | * @uinfo: control element information | |
1437 | * | |
1438 | * Callback to set the value of a single mixer control. | |
1439 | * | |
1440 | * Returns 0 for success. | |
1441 | */ | |
1442 | int snd_soc_put_volsw(struct snd_kcontrol *kcontrol, | |
1443 | struct snd_ctl_elem_value *ucontrol) | |
1444 | { | |
1445 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1446 | int reg = kcontrol->private_value & 0xff; | |
1447 | int shift = (kcontrol->private_value >> 8) & 0x0f; | |
1448 | int rshift = (kcontrol->private_value >> 12) & 0x0f; | |
1449 | int mask = (kcontrol->private_value >> 16) & 0xff; | |
1450 | int invert = (kcontrol->private_value >> 24) & 0x01; | |
1451 | int err; | |
1452 | unsigned short val, val2, val_mask; | |
1453 | ||
1454 | val = (ucontrol->value.integer.value[0] & mask); | |
1455 | if (invert) | |
1456 | val = mask - val; | |
1457 | val_mask = mask << shift; | |
1458 | val = val << shift; | |
1459 | if (shift != rshift) { | |
1460 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1461 | if (invert) | |
1462 | val2 = mask - val2; | |
1463 | val_mask |= mask << rshift; | |
1464 | val |= val2 << rshift; | |
1465 | } | |
1466 | err = snd_soc_update_bits(codec, reg, val_mask, val); | |
1467 | return err; | |
1468 | } | |
1469 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw); | |
1470 | ||
1471 | /** | |
1472 | * snd_soc_info_volsw_2r - double mixer info callback | |
1473 | * @kcontrol: mixer control | |
1474 | * @uinfo: control element information | |
1475 | * | |
1476 | * Callback to provide information about a double mixer control that | |
1477 | * spans 2 codec registers. | |
1478 | * | |
1479 | * Returns 0 for success. | |
1480 | */ | |
1481 | int snd_soc_info_volsw_2r(struct snd_kcontrol *kcontrol, | |
1482 | struct snd_ctl_elem_info *uinfo) | |
1483 | { | |
1484 | int mask = (kcontrol->private_value >> 12) & 0xff; | |
1485 | ||
1486 | uinfo->type = | |
1487 | mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER; | |
1488 | uinfo->count = 2; | |
1489 | uinfo->value.integer.min = 0; | |
1490 | uinfo->value.integer.max = mask; | |
1491 | return 0; | |
1492 | } | |
1493 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r); | |
1494 | ||
1495 | /** | |
1496 | * snd_soc_get_volsw_2r - double mixer get callback | |
1497 | * @kcontrol: mixer control | |
1498 | * @uinfo: control element information | |
1499 | * | |
1500 | * Callback to get the value of a double mixer control that spans 2 registers. | |
1501 | * | |
1502 | * Returns 0 for success. | |
1503 | */ | |
1504 | int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol, | |
1505 | struct snd_ctl_elem_value *ucontrol) | |
1506 | { | |
1507 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1508 | int reg = kcontrol->private_value & 0xff; | |
1509 | int reg2 = (kcontrol->private_value >> 24) & 0xff; | |
1510 | int shift = (kcontrol->private_value >> 8) & 0x0f; | |
1511 | int mask = (kcontrol->private_value >> 12) & 0xff; | |
1512 | int invert = (kcontrol->private_value >> 20) & 0x01; | |
1513 | ||
1514 | ucontrol->value.integer.value[0] = | |
1515 | (snd_soc_read(codec, reg) >> shift) & mask; | |
1516 | ucontrol->value.integer.value[1] = | |
1517 | (snd_soc_read(codec, reg2) >> shift) & mask; | |
1518 | if (invert) { | |
1519 | ucontrol->value.integer.value[0] = | |
1520 | mask - ucontrol->value.integer.value[0]; | |
1521 | ucontrol->value.integer.value[1] = | |
1522 | mask - ucontrol->value.integer.value[1]; | |
1523 | } | |
1524 | ||
1525 | return 0; | |
1526 | } | |
1527 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r); | |
1528 | ||
1529 | /** | |
1530 | * snd_soc_put_volsw_2r - double mixer set callback | |
1531 | * @kcontrol: mixer control | |
1532 | * @uinfo: control element information | |
1533 | * | |
1534 | * Callback to set the value of a double mixer control that spans 2 registers. | |
1535 | * | |
1536 | * Returns 0 for success. | |
1537 | */ | |
1538 | int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol, | |
1539 | struct snd_ctl_elem_value *ucontrol) | |
1540 | { | |
1541 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1542 | int reg = kcontrol->private_value & 0xff; | |
1543 | int reg2 = (kcontrol->private_value >> 24) & 0xff; | |
1544 | int shift = (kcontrol->private_value >> 8) & 0x0f; | |
1545 | int mask = (kcontrol->private_value >> 12) & 0xff; | |
1546 | int invert = (kcontrol->private_value >> 20) & 0x01; | |
1547 | int err; | |
1548 | unsigned short val, val2, val_mask; | |
1549 | ||
1550 | val_mask = mask << shift; | |
1551 | val = (ucontrol->value.integer.value[0] & mask); | |
1552 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1553 | ||
1554 | if (invert) { | |
1555 | val = mask - val; | |
1556 | val2 = mask - val2; | |
1557 | } | |
1558 | ||
1559 | val = val << shift; | |
1560 | val2 = val2 << shift; | |
1561 | ||
1562 | if ((err = snd_soc_update_bits(codec, reg, val_mask, val)) < 0) | |
1563 | return err; | |
1564 | ||
1565 | err = snd_soc_update_bits(codec, reg2, val_mask, val2); | |
1566 | return err; | |
1567 | } | |
1568 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r); | |
1569 | ||
1570 | static int __devinit snd_soc_init(void) | |
1571 | { | |
1572 | printk(KERN_INFO "ASoC version %s\n", SND_SOC_VERSION); | |
1573 | return platform_driver_register(&soc_driver); | |
1574 | } | |
1575 | ||
1576 | static void snd_soc_exit(void) | |
1577 | { | |
1578 | platform_driver_unregister(&soc_driver); | |
1579 | } | |
1580 | ||
1581 | module_init(snd_soc_init); | |
1582 | module_exit(snd_soc_exit); | |
1583 | ||
1584 | /* Module information */ | |
1585 | MODULE_AUTHOR("Liam Girdwood, liam.girdwood@wolfsonmicro.com, www.wolfsonmicro.com"); | |
1586 | MODULE_DESCRIPTION("ALSA SoC Core"); | |
1587 | MODULE_LICENSE("GPL"); |