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 | * | |
db2a4165 FM |
17 | * TODO: |
18 | * o Add hw rules to enforce rates, etc. | |
19 | * o More testing with other codecs/machines. | |
20 | * o Add more codecs and platforms to ensure good API coverage. | |
21 | * o Support TDM on PCM and I2S | |
22 | */ | |
23 | ||
24 | #include <linux/module.h> | |
25 | #include <linux/moduleparam.h> | |
26 | #include <linux/init.h> | |
27 | #include <linux/delay.h> | |
28 | #include <linux/pm.h> | |
29 | #include <linux/bitops.h> | |
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 | ||
38 | /* debug */ | |
39 | #define SOC_DEBUG 0 | |
40 | #if SOC_DEBUG | |
41 | #define dbg(format, arg...) printk(format, ## arg) | |
42 | #else | |
43 | #define dbg(format, arg...) | |
44 | #endif | |
a71a468a | 45 | |
db2a4165 FM |
46 | static DEFINE_MUTEX(pcm_mutex); |
47 | static DEFINE_MUTEX(io_mutex); | |
db2a4165 FM |
48 | static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq); |
49 | ||
db2a4165 FM |
50 | /* |
51 | * This is a timeout to do a DAPM powerdown after a stream is closed(). | |
52 | * It can be used to eliminate pops between different playback streams, e.g. | |
53 | * between two audio tracks. | |
54 | */ | |
55 | static int pmdown_time = 5000; | |
56 | module_param(pmdown_time, int, 0); | |
57 | MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)"); | |
58 | ||
965ac42c LG |
59 | /* |
60 | * This function forces any delayed work to be queued and run. | |
61 | */ | |
62 | static int run_delayed_work(struct delayed_work *dwork) | |
63 | { | |
64 | int ret; | |
65 | ||
66 | /* cancel any work waiting to be queued. */ | |
67 | ret = cancel_delayed_work(dwork); | |
68 | ||
69 | /* if there was any work waiting then we run it now and | |
70 | * wait for it's completion */ | |
71 | if (ret) { | |
72 | schedule_delayed_work(dwork, 0); | |
73 | flush_scheduled_work(); | |
74 | } | |
75 | return ret; | |
76 | } | |
77 | ||
db2a4165 FM |
78 | #ifdef CONFIG_SND_SOC_AC97_BUS |
79 | /* unregister ac97 codec */ | |
80 | static int soc_ac97_dev_unregister(struct snd_soc_codec *codec) | |
81 | { | |
82 | if (codec->ac97->dev.bus) | |
83 | device_unregister(&codec->ac97->dev); | |
84 | return 0; | |
85 | } | |
86 | ||
87 | /* stop no dev release warning */ | |
88 | static void soc_ac97_device_release(struct device *dev){} | |
89 | ||
90 | /* register ac97 codec to bus */ | |
91 | static int soc_ac97_dev_register(struct snd_soc_codec *codec) | |
92 | { | |
93 | int err; | |
94 | ||
95 | codec->ac97->dev.bus = &ac97_bus_type; | |
96 | codec->ac97->dev.parent = NULL; | |
97 | codec->ac97->dev.release = soc_ac97_device_release; | |
98 | ||
99 | snprintf(codec->ac97->dev.bus_id, BUS_ID_SIZE, "%d-%d:%s", | |
100 | codec->card->number, 0, codec->name); | |
101 | err = device_register(&codec->ac97->dev); | |
102 | if (err < 0) { | |
103 | snd_printk(KERN_ERR "Can't register ac97 bus\n"); | |
104 | codec->ac97->dev.bus = NULL; | |
105 | return err; | |
106 | } | |
107 | return 0; | |
108 | } | |
109 | #endif | |
110 | ||
111 | static inline const char* get_dai_name(int type) | |
112 | { | |
113 | switch(type) { | |
a68660e0 | 114 | case SND_SOC_DAI_AC97_BUS: |
db2a4165 FM |
115 | case SND_SOC_DAI_AC97: |
116 | return "AC97"; | |
117 | case SND_SOC_DAI_I2S: | |
118 | return "I2S"; | |
119 | case SND_SOC_DAI_PCM: | |
120 | return "PCM"; | |
121 | } | |
122 | return NULL; | |
123 | } | |
124 | ||
db2a4165 FM |
125 | /* |
126 | * Called by ALSA when a PCM substream is opened, the runtime->hw record is | |
127 | * then initialized and any private data can be allocated. This also calls | |
128 | * startup for the cpu DAI, platform, machine and codec DAI. | |
129 | */ | |
130 | static int soc_pcm_open(struct snd_pcm_substream *substream) | |
131 | { | |
132 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
133 | struct snd_soc_device *socdev = rtd->socdev; | |
134 | struct snd_pcm_runtime *runtime = substream->runtime; | |
cb666e5b | 135 | struct snd_soc_dai_link *machine = rtd->dai; |
db2a4165 | 136 | struct snd_soc_platform *platform = socdev->platform; |
cb666e5b LG |
137 | struct snd_soc_cpu_dai *cpu_dai = machine->cpu_dai; |
138 | struct snd_soc_codec_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
139 | int ret = 0; |
140 | ||
141 | mutex_lock(&pcm_mutex); | |
142 | ||
143 | /* startup the audio subsystem */ | |
cb666e5b LG |
144 | if (cpu_dai->ops.startup) { |
145 | ret = cpu_dai->ops.startup(substream); | |
db2a4165 FM |
146 | if (ret < 0) { |
147 | printk(KERN_ERR "asoc: can't open interface %s\n", | |
cb666e5b | 148 | cpu_dai->name); |
db2a4165 FM |
149 | goto out; |
150 | } | |
151 | } | |
152 | ||
153 | if (platform->pcm_ops->open) { | |
154 | ret = platform->pcm_ops->open(substream); | |
155 | if (ret < 0) { | |
156 | printk(KERN_ERR "asoc: can't open platform %s\n", platform->name); | |
157 | goto platform_err; | |
158 | } | |
159 | } | |
160 | ||
cb666e5b LG |
161 | if (codec_dai->ops.startup) { |
162 | ret = codec_dai->ops.startup(substream); | |
db2a4165 | 163 | if (ret < 0) { |
cb666e5b LG |
164 | printk(KERN_ERR "asoc: can't open codec %s\n", |
165 | codec_dai->name); | |
166 | goto codec_dai_err; | |
db2a4165 FM |
167 | } |
168 | } | |
169 | ||
cb666e5b LG |
170 | if (machine->ops && machine->ops->startup) { |
171 | ret = machine->ops->startup(substream); | |
db2a4165 | 172 | if (ret < 0) { |
cb666e5b LG |
173 | printk(KERN_ERR "asoc: %s startup failed\n", machine->name); |
174 | goto machine_err; | |
db2a4165 FM |
175 | } |
176 | } | |
177 | ||
db2a4165 FM |
178 | /* Check that the codec and cpu DAI's are compatible */ |
179 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
180 | runtime->hw.rate_min = | |
cb666e5b | 181 | max(codec_dai->playback.rate_min, cpu_dai->playback.rate_min); |
db2a4165 | 182 | runtime->hw.rate_max = |
cb666e5b | 183 | min(codec_dai->playback.rate_max, cpu_dai->playback.rate_max); |
db2a4165 | 184 | runtime->hw.channels_min = |
cb666e5b LG |
185 | max(codec_dai->playback.channels_min, |
186 | cpu_dai->playback.channels_min); | |
db2a4165 | 187 | runtime->hw.channels_max = |
cb666e5b LG |
188 | min(codec_dai->playback.channels_max, |
189 | cpu_dai->playback.channels_max); | |
190 | runtime->hw.formats = | |
191 | codec_dai->playback.formats & cpu_dai->playback.formats; | |
192 | runtime->hw.rates = | |
193 | codec_dai->playback.rates & cpu_dai->playback.rates; | |
db2a4165 FM |
194 | } else { |
195 | runtime->hw.rate_min = | |
cb666e5b | 196 | max(codec_dai->capture.rate_min, cpu_dai->capture.rate_min); |
db2a4165 | 197 | runtime->hw.rate_max = |
cb666e5b | 198 | min(codec_dai->capture.rate_max, cpu_dai->capture.rate_max); |
db2a4165 | 199 | runtime->hw.channels_min = |
cb666e5b LG |
200 | max(codec_dai->capture.channels_min, |
201 | cpu_dai->capture.channels_min); | |
db2a4165 | 202 | runtime->hw.channels_max = |
cb666e5b LG |
203 | min(codec_dai->capture.channels_max, |
204 | cpu_dai->capture.channels_max); | |
205 | runtime->hw.formats = | |
206 | codec_dai->capture.formats & cpu_dai->capture.formats; | |
207 | runtime->hw.rates = | |
208 | codec_dai->capture.rates & cpu_dai->capture.rates; | |
db2a4165 FM |
209 | } |
210 | ||
211 | snd_pcm_limit_hw_rates(runtime); | |
212 | if (!runtime->hw.rates) { | |
213 | printk(KERN_ERR "asoc: %s <-> %s No matching rates\n", | |
cb666e5b LG |
214 | codec_dai->name, cpu_dai->name); |
215 | goto machine_err; | |
db2a4165 FM |
216 | } |
217 | if (!runtime->hw.formats) { | |
218 | printk(KERN_ERR "asoc: %s <-> %s No matching formats\n", | |
cb666e5b LG |
219 | codec_dai->name, cpu_dai->name); |
220 | goto machine_err; | |
db2a4165 FM |
221 | } |
222 | if (!runtime->hw.channels_min || !runtime->hw.channels_max) { | |
223 | printk(KERN_ERR "asoc: %s <-> %s No matching channels\n", | |
cb666e5b LG |
224 | codec_dai->name, cpu_dai->name); |
225 | goto machine_err; | |
db2a4165 FM |
226 | } |
227 | ||
cb666e5b | 228 | dbg("asoc: %s <-> %s info:\n",codec_dai->name, cpu_dai->name); |
b5c5fd24 LG |
229 | dbg("asoc: rate mask 0x%x\n", runtime->hw.rates); |
230 | dbg("asoc: min ch %d max ch %d\n", runtime->hw.channels_min, | |
231 | runtime->hw.channels_max); | |
232 | dbg("asoc: min rate %d max rate %d\n", runtime->hw.rate_min, | |
233 | runtime->hw.rate_max); | |
db2a4165 | 234 | |
db2a4165 | 235 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
cb666e5b | 236 | cpu_dai->playback.active = codec_dai->playback.active = 1; |
db2a4165 | 237 | else |
cb666e5b LG |
238 | cpu_dai->capture.active = codec_dai->capture.active = 1; |
239 | cpu_dai->active = codec_dai->active = 1; | |
240 | cpu_dai->runtime = runtime; | |
db2a4165 FM |
241 | socdev->codec->active++; |
242 | mutex_unlock(&pcm_mutex); | |
243 | return 0; | |
244 | ||
cb666e5b | 245 | machine_err: |
db2a4165 FM |
246 | if (machine->ops && machine->ops->shutdown) |
247 | machine->ops->shutdown(substream); | |
248 | ||
cb666e5b | 249 | codec_dai_err: |
db2a4165 FM |
250 | if (platform->pcm_ops->close) |
251 | platform->pcm_ops->close(substream); | |
252 | ||
253 | platform_err: | |
cb666e5b LG |
254 | if (cpu_dai->ops.shutdown) |
255 | cpu_dai->ops.shutdown(substream); | |
db2a4165 FM |
256 | out: |
257 | mutex_unlock(&pcm_mutex); | |
258 | return ret; | |
259 | } | |
260 | ||
261 | /* | |
3a4fa0a2 | 262 | * Power down the audio subsystem pmdown_time msecs after close is called. |
db2a4165 FM |
263 | * This is to ensure there are no pops or clicks in between any music tracks |
264 | * due to DAPM power cycling. | |
265 | */ | |
4484bb2e | 266 | static void close_delayed_work(struct work_struct *work) |
db2a4165 | 267 | { |
4484bb2e AM |
268 | struct snd_soc_device *socdev = |
269 | container_of(work, struct snd_soc_device, delayed_work.work); | |
db2a4165 FM |
270 | struct snd_soc_codec *codec = socdev->codec; |
271 | struct snd_soc_codec_dai *codec_dai; | |
272 | int i; | |
273 | ||
274 | mutex_lock(&pcm_mutex); | |
275 | for(i = 0; i < codec->num_dai; i++) { | |
276 | codec_dai = &codec->dai[i]; | |
277 | ||
278 | dbg("pop wq checking: %s status: %s waiting: %s\n", | |
279 | codec_dai->playback.stream_name, | |
280 | codec_dai->playback.active ? "active" : "inactive", | |
281 | codec_dai->pop_wait ? "yes" : "no"); | |
282 | ||
283 | /* are we waiting on this codec DAI stream */ | |
284 | if (codec_dai->pop_wait == 1) { | |
285 | ||
3c1c47e0 LG |
286 | /* power down the codec to D1 if no longer active */ |
287 | if (codec->active == 0) { | |
288 | dbg("pop wq D1 %s %s\n", codec->name, | |
289 | codec_dai->playback.stream_name); | |
290 | snd_soc_dapm_device_event(socdev, | |
291 | SNDRV_CTL_POWER_D1); | |
292 | } | |
293 | ||
db2a4165 | 294 | codec_dai->pop_wait = 0; |
0b4d221b LG |
295 | snd_soc_dapm_stream_event(codec, |
296 | codec_dai->playback.stream_name, | |
db2a4165 FM |
297 | SND_SOC_DAPM_STREAM_STOP); |
298 | ||
299 | /* power down the codec power domain if no longer active */ | |
300 | if (codec->active == 0) { | |
301 | dbg("pop wq D3 %s %s\n", codec->name, | |
302 | codec_dai->playback.stream_name); | |
0b4d221b LG |
303 | snd_soc_dapm_device_event(socdev, |
304 | SNDRV_CTL_POWER_D3hot); | |
db2a4165 FM |
305 | } |
306 | } | |
307 | } | |
308 | mutex_unlock(&pcm_mutex); | |
309 | } | |
310 | ||
311 | /* | |
312 | * Called by ALSA when a PCM substream is closed. Private data can be | |
313 | * freed here. The cpu DAI, codec DAI, machine and platform are also | |
314 | * shutdown. | |
315 | */ | |
316 | static int soc_codec_close(struct snd_pcm_substream *substream) | |
317 | { | |
318 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
319 | struct snd_soc_device *socdev = rtd->socdev; | |
cb666e5b | 320 | struct snd_soc_dai_link *machine = rtd->dai; |
db2a4165 | 321 | struct snd_soc_platform *platform = socdev->platform; |
cb666e5b LG |
322 | struct snd_soc_cpu_dai *cpu_dai = machine->cpu_dai; |
323 | struct snd_soc_codec_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
324 | struct snd_soc_codec *codec = socdev->codec; |
325 | ||
326 | mutex_lock(&pcm_mutex); | |
327 | ||
328 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
cb666e5b | 329 | cpu_dai->playback.active = codec_dai->playback.active = 0; |
db2a4165 | 330 | else |
cb666e5b | 331 | cpu_dai->capture.active = codec_dai->capture.active = 0; |
db2a4165 | 332 | |
cb666e5b LG |
333 | if (codec_dai->playback.active == 0 && |
334 | codec_dai->capture.active == 0) { | |
335 | cpu_dai->active = codec_dai->active = 0; | |
db2a4165 FM |
336 | } |
337 | codec->active--; | |
338 | ||
cb666e5b LG |
339 | if (cpu_dai->ops.shutdown) |
340 | cpu_dai->ops.shutdown(substream); | |
db2a4165 | 341 | |
cb666e5b LG |
342 | if (codec_dai->ops.shutdown) |
343 | codec_dai->ops.shutdown(substream); | |
db2a4165 FM |
344 | |
345 | if (machine->ops && machine->ops->shutdown) | |
346 | machine->ops->shutdown(substream); | |
347 | ||
348 | if (platform->pcm_ops->close) | |
349 | platform->pcm_ops->close(substream); | |
cb666e5b | 350 | cpu_dai->runtime = NULL; |
db2a4165 FM |
351 | |
352 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
353 | /* start delayed pop wq here for playback streams */ | |
cb666e5b | 354 | codec_dai->pop_wait = 1; |
4bb09523 | 355 | schedule_delayed_work(&socdev->delayed_work, |
db2a4165 FM |
356 | msecs_to_jiffies(pmdown_time)); |
357 | } else { | |
358 | /* capture streams can be powered down now */ | |
cb666e5b | 359 | snd_soc_dapm_stream_event(codec, |
0b4d221b LG |
360 | codec_dai->capture.stream_name, |
361 | SND_SOC_DAPM_STREAM_STOP); | |
db2a4165 | 362 | |
0b4d221b LG |
363 | if (codec->active == 0 && codec_dai->pop_wait == 0) |
364 | snd_soc_dapm_device_event(socdev, | |
365 | SNDRV_CTL_POWER_D3hot); | |
db2a4165 FM |
366 | } |
367 | ||
368 | mutex_unlock(&pcm_mutex); | |
369 | return 0; | |
370 | } | |
371 | ||
372 | /* | |
373 | * Called by ALSA when the PCM substream is prepared, can set format, sample | |
374 | * rate, etc. This function is non atomic and can be called multiple times, | |
375 | * it can refer to the runtime info. | |
376 | */ | |
377 | static int soc_pcm_prepare(struct snd_pcm_substream *substream) | |
378 | { | |
379 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
380 | struct snd_soc_device *socdev = rtd->socdev; | |
cb666e5b | 381 | struct snd_soc_dai_link *machine = rtd->dai; |
db2a4165 | 382 | struct snd_soc_platform *platform = socdev->platform; |
cb666e5b LG |
383 | struct snd_soc_cpu_dai *cpu_dai = machine->cpu_dai; |
384 | struct snd_soc_codec_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
385 | struct snd_soc_codec *codec = socdev->codec; |
386 | int ret = 0; | |
387 | ||
388 | mutex_lock(&pcm_mutex); | |
cb666e5b LG |
389 | |
390 | if (machine->ops && machine->ops->prepare) { | |
391 | ret = machine->ops->prepare(substream); | |
392 | if (ret < 0) { | |
393 | printk(KERN_ERR "asoc: machine prepare error\n"); | |
394 | goto out; | |
395 | } | |
396 | } | |
397 | ||
db2a4165 FM |
398 | if (platform->pcm_ops->prepare) { |
399 | ret = platform->pcm_ops->prepare(substream); | |
a71a468a LG |
400 | if (ret < 0) { |
401 | printk(KERN_ERR "asoc: platform prepare error\n"); | |
db2a4165 | 402 | goto out; |
a71a468a | 403 | } |
db2a4165 FM |
404 | } |
405 | ||
cb666e5b LG |
406 | if (codec_dai->ops.prepare) { |
407 | ret = codec_dai->ops.prepare(substream); | |
a71a468a LG |
408 | if (ret < 0) { |
409 | printk(KERN_ERR "asoc: codec DAI prepare error\n"); | |
db2a4165 | 410 | goto out; |
a71a468a | 411 | } |
db2a4165 FM |
412 | } |
413 | ||
cb666e5b LG |
414 | if (cpu_dai->ops.prepare) { |
415 | ret = cpu_dai->ops.prepare(substream); | |
416 | if (ret < 0) { | |
417 | printk(KERN_ERR "asoc: cpu DAI prepare error\n"); | |
418 | goto out; | |
419 | } | |
420 | } | |
db2a4165 FM |
421 | |
422 | /* we only want to start a DAPM playback stream if we are not waiting | |
423 | * on an existing one stopping */ | |
cb666e5b | 424 | if (codec_dai->pop_wait) { |
db2a4165 FM |
425 | /* we are waiting for the delayed work to start */ |
426 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
cb666e5b LG |
427 | snd_soc_dapm_stream_event(socdev->codec, |
428 | codec_dai->capture.stream_name, | |
db2a4165 FM |
429 | SND_SOC_DAPM_STREAM_START); |
430 | else { | |
cb666e5b | 431 | codec_dai->pop_wait = 0; |
4484bb2e | 432 | cancel_delayed_work(&socdev->delayed_work); |
cb666e5b LG |
433 | if (codec_dai->dai_ops.digital_mute) |
434 | codec_dai->dai_ops.digital_mute(codec_dai, 0); | |
db2a4165 FM |
435 | } |
436 | } else { | |
437 | /* no delayed work - do we need to power up codec */ | |
438 | if (codec->dapm_state != SNDRV_CTL_POWER_D0) { | |
439 | ||
0b4d221b | 440 | snd_soc_dapm_device_event(socdev, SNDRV_CTL_POWER_D1); |
db2a4165 FM |
441 | |
442 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
443 | snd_soc_dapm_stream_event(codec, | |
cb666e5b | 444 | codec_dai->playback.stream_name, |
db2a4165 FM |
445 | SND_SOC_DAPM_STREAM_START); |
446 | else | |
447 | snd_soc_dapm_stream_event(codec, | |
cb666e5b | 448 | codec_dai->capture.stream_name, |
db2a4165 FM |
449 | SND_SOC_DAPM_STREAM_START); |
450 | ||
0b4d221b | 451 | snd_soc_dapm_device_event(socdev, SNDRV_CTL_POWER_D0); |
cb666e5b LG |
452 | if (codec_dai->dai_ops.digital_mute) |
453 | codec_dai->dai_ops.digital_mute(codec_dai, 0); | |
db2a4165 FM |
454 | |
455 | } else { | |
456 | /* codec already powered - power on widgets */ | |
457 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
458 | snd_soc_dapm_stream_event(codec, | |
cb666e5b | 459 | codec_dai->playback.stream_name, |
db2a4165 FM |
460 | SND_SOC_DAPM_STREAM_START); |
461 | else | |
462 | snd_soc_dapm_stream_event(codec, | |
cb666e5b | 463 | codec_dai->capture.stream_name, |
db2a4165 | 464 | SND_SOC_DAPM_STREAM_START); |
cb666e5b LG |
465 | if (codec_dai->dai_ops.digital_mute) |
466 | codec_dai->dai_ops.digital_mute(codec_dai, 0); | |
db2a4165 FM |
467 | } |
468 | } | |
469 | ||
470 | out: | |
471 | mutex_unlock(&pcm_mutex); | |
472 | return ret; | |
473 | } | |
474 | ||
475 | /* | |
476 | * Called by ALSA when the hardware params are set by application. This | |
477 | * function can also be called multiple times and can allocate buffers | |
478 | * (using snd_pcm_lib_* ). It's non-atomic. | |
479 | */ | |
480 | static int soc_pcm_hw_params(struct snd_pcm_substream *substream, | |
481 | struct snd_pcm_hw_params *params) | |
482 | { | |
483 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
484 | struct snd_soc_device *socdev = rtd->socdev; | |
cb666e5b | 485 | struct snd_soc_dai_link *machine = rtd->dai; |
db2a4165 | 486 | struct snd_soc_platform *platform = socdev->platform; |
cb666e5b LG |
487 | struct snd_soc_cpu_dai *cpu_dai = machine->cpu_dai; |
488 | struct snd_soc_codec_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
489 | int ret = 0; |
490 | ||
491 | mutex_lock(&pcm_mutex); | |
492 | ||
cb666e5b LG |
493 | if (machine->ops && machine->ops->hw_params) { |
494 | ret = machine->ops->hw_params(substream, params); | |
495 | if (ret < 0) { | |
496 | printk(KERN_ERR "asoc: machine hw_params failed\n"); | |
db2a4165 | 497 | goto out; |
cb666e5b | 498 | } |
db2a4165 FM |
499 | } |
500 | ||
cb666e5b LG |
501 | if (codec_dai->ops.hw_params) { |
502 | ret = codec_dai->ops.hw_params(substream, params); | |
db2a4165 FM |
503 | if (ret < 0) { |
504 | printk(KERN_ERR "asoc: can't set codec %s hw params\n", | |
cb666e5b LG |
505 | codec_dai->name); |
506 | goto codec_err; | |
db2a4165 FM |
507 | } |
508 | } | |
509 | ||
cb666e5b LG |
510 | if (cpu_dai->ops.hw_params) { |
511 | ret = cpu_dai->ops.hw_params(substream, params); | |
db2a4165 FM |
512 | if (ret < 0) { |
513 | printk(KERN_ERR "asoc: can't set interface %s hw params\n", | |
cb666e5b | 514 | cpu_dai->name); |
db2a4165 FM |
515 | goto interface_err; |
516 | } | |
517 | } | |
518 | ||
519 | if (platform->pcm_ops->hw_params) { | |
520 | ret = platform->pcm_ops->hw_params(substream, params); | |
521 | if (ret < 0) { | |
522 | printk(KERN_ERR "asoc: can't set platform %s hw params\n", | |
523 | platform->name); | |
524 | goto platform_err; | |
525 | } | |
526 | } | |
527 | ||
db2a4165 FM |
528 | out: |
529 | mutex_unlock(&pcm_mutex); | |
530 | return ret; | |
531 | ||
db2a4165 | 532 | platform_err: |
cb666e5b LG |
533 | if (cpu_dai->ops.hw_free) |
534 | cpu_dai->ops.hw_free(substream); | |
db2a4165 FM |
535 | |
536 | interface_err: | |
cb666e5b LG |
537 | if (codec_dai->ops.hw_free) |
538 | codec_dai->ops.hw_free(substream); | |
539 | ||
540 | codec_err: | |
541 | if(machine->ops && machine->ops->hw_free) | |
542 | machine->ops->hw_free(substream); | |
db2a4165 FM |
543 | |
544 | mutex_unlock(&pcm_mutex); | |
545 | return ret; | |
546 | } | |
547 | ||
548 | /* | |
549 | * Free's resources allocated by hw_params, can be called multiple times | |
550 | */ | |
551 | static int soc_pcm_hw_free(struct snd_pcm_substream *substream) | |
552 | { | |
553 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
554 | struct snd_soc_device *socdev = rtd->socdev; | |
cb666e5b | 555 | struct snd_soc_dai_link *machine = rtd->dai; |
db2a4165 | 556 | struct snd_soc_platform *platform = socdev->platform; |
cb666e5b LG |
557 | struct snd_soc_cpu_dai *cpu_dai = machine->cpu_dai; |
558 | struct snd_soc_codec_dai *codec_dai = machine->codec_dai; | |
db2a4165 | 559 | struct snd_soc_codec *codec = socdev->codec; |
db2a4165 FM |
560 | |
561 | mutex_lock(&pcm_mutex); | |
562 | ||
563 | /* apply codec digital mute */ | |
cb666e5b LG |
564 | if (!codec->active && codec_dai->dai_ops.digital_mute) |
565 | codec_dai->dai_ops.digital_mute(codec_dai, 1); | |
db2a4165 FM |
566 | |
567 | /* free any machine hw params */ | |
568 | if (machine->ops && machine->ops->hw_free) | |
569 | machine->ops->hw_free(substream); | |
570 | ||
571 | /* free any DMA resources */ | |
572 | if (platform->pcm_ops->hw_free) | |
573 | platform->pcm_ops->hw_free(substream); | |
574 | ||
575 | /* now free hw params for the DAI's */ | |
cb666e5b LG |
576 | if (codec_dai->ops.hw_free) |
577 | codec_dai->ops.hw_free(substream); | |
db2a4165 | 578 | |
cb666e5b LG |
579 | if (cpu_dai->ops.hw_free) |
580 | cpu_dai->ops.hw_free(substream); | |
db2a4165 FM |
581 | |
582 | mutex_unlock(&pcm_mutex); | |
583 | return 0; | |
584 | } | |
585 | ||
586 | static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd) | |
587 | { | |
588 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
589 | struct snd_soc_device *socdev = rtd->socdev; | |
cb666e5b | 590 | struct snd_soc_dai_link *machine = rtd->dai; |
db2a4165 | 591 | struct snd_soc_platform *platform = socdev->platform; |
cb666e5b LG |
592 | struct snd_soc_cpu_dai *cpu_dai = machine->cpu_dai; |
593 | struct snd_soc_codec_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
594 | int ret; |
595 | ||
cb666e5b LG |
596 | if (codec_dai->ops.trigger) { |
597 | ret = codec_dai->ops.trigger(substream, cmd); | |
db2a4165 FM |
598 | if (ret < 0) |
599 | return ret; | |
600 | } | |
601 | ||
602 | if (platform->pcm_ops->trigger) { | |
603 | ret = platform->pcm_ops->trigger(substream, cmd); | |
604 | if (ret < 0) | |
605 | return ret; | |
606 | } | |
607 | ||
cb666e5b LG |
608 | if (cpu_dai->ops.trigger) { |
609 | ret = cpu_dai->ops.trigger(substream, cmd); | |
db2a4165 FM |
610 | if (ret < 0) |
611 | return ret; | |
612 | } | |
613 | return 0; | |
614 | } | |
615 | ||
616 | /* ASoC PCM operations */ | |
617 | static struct snd_pcm_ops soc_pcm_ops = { | |
618 | .open = soc_pcm_open, | |
619 | .close = soc_codec_close, | |
620 | .hw_params = soc_pcm_hw_params, | |
621 | .hw_free = soc_pcm_hw_free, | |
622 | .prepare = soc_pcm_prepare, | |
623 | .trigger = soc_pcm_trigger, | |
624 | }; | |
625 | ||
626 | #ifdef CONFIG_PM | |
627 | /* powers down audio subsystem for suspend */ | |
628 | static int soc_suspend(struct platform_device *pdev, pm_message_t state) | |
629 | { | |
630 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
631 | struct snd_soc_machine *machine = socdev->machine; | |
632 | struct snd_soc_platform *platform = socdev->platform; | |
633 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; | |
634 | struct snd_soc_codec *codec = socdev->codec; | |
635 | int i; | |
636 | ||
637 | /* mute any active DAC's */ | |
638 | for(i = 0; i < machine->num_links; i++) { | |
639 | struct snd_soc_codec_dai *dai = machine->dai_link[i].codec_dai; | |
cb666e5b LG |
640 | if (dai->dai_ops.digital_mute && dai->playback.active) |
641 | dai->dai_ops.digital_mute(dai, 1); | |
db2a4165 FM |
642 | } |
643 | ||
4ccab3e7 LG |
644 | /* suspend all pcms */ |
645 | for (i = 0; i < machine->num_links; i++) | |
646 | snd_pcm_suspend_all(machine->dai_link[i].pcm); | |
647 | ||
db2a4165 FM |
648 | if (machine->suspend_pre) |
649 | machine->suspend_pre(pdev, state); | |
650 | ||
651 | for(i = 0; i < machine->num_links; i++) { | |
652 | struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai; | |
653 | if (cpu_dai->suspend && cpu_dai->type != SND_SOC_DAI_AC97) | |
654 | cpu_dai->suspend(pdev, cpu_dai); | |
655 | if (platform->suspend) | |
656 | platform->suspend(pdev, cpu_dai); | |
657 | } | |
658 | ||
659 | /* close any waiting streams and save state */ | |
965ac42c | 660 | run_delayed_work(&socdev->delayed_work); |
db2a4165 FM |
661 | codec->suspend_dapm_state = codec->dapm_state; |
662 | ||
663 | for(i = 0; i < codec->num_dai; i++) { | |
664 | char *stream = codec->dai[i].playback.stream_name; | |
665 | if (stream != NULL) | |
666 | snd_soc_dapm_stream_event(codec, stream, | |
667 | SND_SOC_DAPM_STREAM_SUSPEND); | |
668 | stream = codec->dai[i].capture.stream_name; | |
669 | if (stream != NULL) | |
670 | snd_soc_dapm_stream_event(codec, stream, | |
671 | SND_SOC_DAPM_STREAM_SUSPEND); | |
672 | } | |
673 | ||
674 | if (codec_dev->suspend) | |
675 | codec_dev->suspend(pdev, state); | |
676 | ||
677 | for(i = 0; i < machine->num_links; i++) { | |
678 | struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai; | |
679 | if (cpu_dai->suspend && cpu_dai->type == SND_SOC_DAI_AC97) | |
680 | cpu_dai->suspend(pdev, cpu_dai); | |
681 | } | |
682 | ||
683 | if (machine->suspend_post) | |
684 | machine->suspend_post(pdev, state); | |
685 | ||
686 | return 0; | |
687 | } | |
688 | ||
689 | /* powers up audio subsystem after a suspend */ | |
690 | static int soc_resume(struct platform_device *pdev) | |
691 | { | |
692 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
693 | struct snd_soc_machine *machine = socdev->machine; | |
694 | struct snd_soc_platform *platform = socdev->platform; | |
695 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; | |
696 | struct snd_soc_codec *codec = socdev->codec; | |
697 | int i; | |
698 | ||
699 | if (machine->resume_pre) | |
700 | machine->resume_pre(pdev); | |
701 | ||
702 | for(i = 0; i < machine->num_links; i++) { | |
703 | struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai; | |
704 | if (cpu_dai->resume && cpu_dai->type == SND_SOC_DAI_AC97) | |
705 | cpu_dai->resume(pdev, cpu_dai); | |
706 | } | |
707 | ||
708 | if (codec_dev->resume) | |
709 | codec_dev->resume(pdev); | |
710 | ||
711 | for(i = 0; i < codec->num_dai; i++) { | |
712 | char* stream = codec->dai[i].playback.stream_name; | |
713 | if (stream != NULL) | |
714 | snd_soc_dapm_stream_event(codec, stream, | |
715 | SND_SOC_DAPM_STREAM_RESUME); | |
716 | stream = codec->dai[i].capture.stream_name; | |
717 | if (stream != NULL) | |
718 | snd_soc_dapm_stream_event(codec, stream, | |
719 | SND_SOC_DAPM_STREAM_RESUME); | |
720 | } | |
721 | ||
722 | /* unmute any active DAC's */ | |
723 | for(i = 0; i < machine->num_links; i++) { | |
724 | struct snd_soc_codec_dai *dai = machine->dai_link[i].codec_dai; | |
cb666e5b LG |
725 | if (dai->dai_ops.digital_mute && dai->playback.active) |
726 | dai->dai_ops.digital_mute(dai, 0); | |
db2a4165 FM |
727 | } |
728 | ||
729 | for(i = 0; i < machine->num_links; i++) { | |
730 | struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai; | |
731 | if (cpu_dai->resume && cpu_dai->type != SND_SOC_DAI_AC97) | |
732 | cpu_dai->resume(pdev, cpu_dai); | |
733 | if (platform->resume) | |
734 | platform->resume(pdev, cpu_dai); | |
735 | } | |
736 | ||
737 | if (machine->resume_post) | |
738 | machine->resume_post(pdev); | |
739 | ||
740 | return 0; | |
741 | } | |
742 | ||
743 | #else | |
744 | #define soc_suspend NULL | |
745 | #define soc_resume NULL | |
746 | #endif | |
747 | ||
748 | /* probes a new socdev */ | |
749 | static int soc_probe(struct platform_device *pdev) | |
750 | { | |
751 | int ret = 0, i; | |
752 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
753 | struct snd_soc_machine *machine = socdev->machine; | |
754 | struct snd_soc_platform *platform = socdev->platform; | |
755 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; | |
756 | ||
757 | if (machine->probe) { | |
758 | ret = machine->probe(pdev); | |
759 | if(ret < 0) | |
760 | return ret; | |
761 | } | |
762 | ||
763 | for (i = 0; i < machine->num_links; i++) { | |
764 | struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai; | |
765 | if (cpu_dai->probe) { | |
766 | ret = cpu_dai->probe(pdev); | |
767 | if(ret < 0) | |
768 | goto cpu_dai_err; | |
769 | } | |
770 | } | |
771 | ||
772 | if (codec_dev->probe) { | |
773 | ret = codec_dev->probe(pdev); | |
774 | if(ret < 0) | |
775 | goto cpu_dai_err; | |
776 | } | |
777 | ||
778 | if (platform->probe) { | |
779 | ret = platform->probe(pdev); | |
780 | if(ret < 0) | |
781 | goto platform_err; | |
782 | } | |
783 | ||
784 | /* DAPM stream work */ | |
4484bb2e | 785 | INIT_DELAYED_WORK(&socdev->delayed_work, close_delayed_work); |
db2a4165 FM |
786 | return 0; |
787 | ||
db2a4165 FM |
788 | platform_err: |
789 | if (codec_dev->remove) | |
790 | codec_dev->remove(pdev); | |
791 | ||
792 | cpu_dai_err: | |
18b9b3d9 | 793 | for (i--; i >= 0; i--) { |
db2a4165 FM |
794 | struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai; |
795 | if (cpu_dai->remove) | |
796 | cpu_dai->remove(pdev); | |
797 | } | |
798 | ||
799 | if (machine->remove) | |
800 | machine->remove(pdev); | |
801 | ||
802 | return ret; | |
803 | } | |
804 | ||
805 | /* removes a socdev */ | |
806 | static int soc_remove(struct platform_device *pdev) | |
807 | { | |
808 | int i; | |
809 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
810 | struct snd_soc_machine *machine = socdev->machine; | |
811 | struct snd_soc_platform *platform = socdev->platform; | |
812 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; | |
813 | ||
965ac42c LG |
814 | run_delayed_work(&socdev->delayed_work); |
815 | ||
db2a4165 FM |
816 | if (platform->remove) |
817 | platform->remove(pdev); | |
818 | ||
819 | if (codec_dev->remove) | |
820 | codec_dev->remove(pdev); | |
821 | ||
822 | for (i = 0; i < machine->num_links; i++) { | |
823 | struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai; | |
824 | if (cpu_dai->remove) | |
825 | cpu_dai->remove(pdev); | |
826 | } | |
827 | ||
828 | if (machine->remove) | |
829 | machine->remove(pdev); | |
830 | ||
831 | return 0; | |
832 | } | |
833 | ||
834 | /* ASoC platform driver */ | |
835 | static struct platform_driver soc_driver = { | |
836 | .driver = { | |
837 | .name = "soc-audio", | |
8b45a209 | 838 | .owner = THIS_MODULE, |
db2a4165 FM |
839 | }, |
840 | .probe = soc_probe, | |
841 | .remove = soc_remove, | |
842 | .suspend = soc_suspend, | |
843 | .resume = soc_resume, | |
844 | }; | |
845 | ||
846 | /* create a new pcm */ | |
847 | static int soc_new_pcm(struct snd_soc_device *socdev, | |
848 | struct snd_soc_dai_link *dai_link, int num) | |
849 | { | |
850 | struct snd_soc_codec *codec = socdev->codec; | |
851 | struct snd_soc_codec_dai *codec_dai = dai_link->codec_dai; | |
852 | struct snd_soc_cpu_dai *cpu_dai = dai_link->cpu_dai; | |
853 | struct snd_soc_pcm_runtime *rtd; | |
854 | struct snd_pcm *pcm; | |
855 | char new_name[64]; | |
856 | int ret = 0, playback = 0, capture = 0; | |
857 | ||
858 | rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime), GFP_KERNEL); | |
859 | if (rtd == NULL) | |
860 | return -ENOMEM; | |
cb666e5b LG |
861 | |
862 | rtd->dai = dai_link; | |
db2a4165 | 863 | rtd->socdev = socdev; |
cb666e5b | 864 | codec_dai->codec = socdev->codec; |
db2a4165 FM |
865 | |
866 | /* check client and interface hw capabilities */ | |
867 | sprintf(new_name, "%s %s-%s-%d",dai_link->stream_name, codec_dai->name, | |
868 | get_dai_name(cpu_dai->type), num); | |
869 | ||
870 | if (codec_dai->playback.channels_min) | |
871 | playback = 1; | |
872 | if (codec_dai->capture.channels_min) | |
873 | capture = 1; | |
874 | ||
875 | ret = snd_pcm_new(codec->card, new_name, codec->pcm_devs++, playback, | |
876 | capture, &pcm); | |
877 | if (ret < 0) { | |
878 | printk(KERN_ERR "asoc: can't create pcm for codec %s\n", codec->name); | |
879 | kfree(rtd); | |
880 | return ret; | |
881 | } | |
882 | ||
4ccab3e7 | 883 | dai_link->pcm = pcm; |
db2a4165 FM |
884 | pcm->private_data = rtd; |
885 | soc_pcm_ops.mmap = socdev->platform->pcm_ops->mmap; | |
886 | soc_pcm_ops.pointer = socdev->platform->pcm_ops->pointer; | |
887 | soc_pcm_ops.ioctl = socdev->platform->pcm_ops->ioctl; | |
888 | soc_pcm_ops.copy = socdev->platform->pcm_ops->copy; | |
889 | soc_pcm_ops.silence = socdev->platform->pcm_ops->silence; | |
890 | soc_pcm_ops.ack = socdev->platform->pcm_ops->ack; | |
891 | soc_pcm_ops.page = socdev->platform->pcm_ops->page; | |
892 | ||
893 | if (playback) | |
894 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &soc_pcm_ops); | |
895 | ||
896 | if (capture) | |
897 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &soc_pcm_ops); | |
898 | ||
899 | ret = socdev->platform->pcm_new(codec->card, codec_dai, pcm); | |
900 | if (ret < 0) { | |
901 | printk(KERN_ERR "asoc: platform pcm constructor failed\n"); | |
902 | kfree(rtd); | |
903 | return ret; | |
904 | } | |
905 | ||
906 | pcm->private_free = socdev->platform->pcm_free; | |
907 | printk(KERN_INFO "asoc: %s <-> %s mapping ok\n", codec_dai->name, | |
908 | cpu_dai->name); | |
909 | return ret; | |
910 | } | |
911 | ||
912 | /* codec register dump */ | |
913 | static ssize_t codec_reg_show(struct device *dev, | |
914 | struct device_attribute *attr, char *buf) | |
915 | { | |
916 | struct snd_soc_device *devdata = dev_get_drvdata(dev); | |
917 | struct snd_soc_codec *codec = devdata->codec; | |
918 | int i, step = 1, count = 0; | |
919 | ||
920 | if (!codec->reg_cache_size) | |
921 | return 0; | |
922 | ||
923 | if (codec->reg_cache_step) | |
924 | step = codec->reg_cache_step; | |
925 | ||
926 | count += sprintf(buf, "%s registers\n", codec->name); | |
927 | for(i = 0; i < codec->reg_cache_size; i += step) | |
928 | count += sprintf(buf + count, "%2x: %4x\n", i, codec->read(codec, i)); | |
929 | ||
930 | return count; | |
931 | } | |
932 | static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL); | |
933 | ||
934 | /** | |
935 | * snd_soc_new_ac97_codec - initailise AC97 device | |
936 | * @codec: audio codec | |
937 | * @ops: AC97 bus operations | |
938 | * @num: AC97 codec number | |
939 | * | |
940 | * Initialises AC97 codec resources for use by ad-hoc devices only. | |
941 | */ | |
942 | int snd_soc_new_ac97_codec(struct snd_soc_codec *codec, | |
943 | struct snd_ac97_bus_ops *ops, int num) | |
944 | { | |
945 | mutex_lock(&codec->mutex); | |
946 | ||
947 | codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL); | |
948 | if (codec->ac97 == NULL) { | |
949 | mutex_unlock(&codec->mutex); | |
950 | return -ENOMEM; | |
951 | } | |
952 | ||
953 | codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL); | |
954 | if (codec->ac97->bus == NULL) { | |
955 | kfree(codec->ac97); | |
956 | codec->ac97 = NULL; | |
957 | mutex_unlock(&codec->mutex); | |
958 | return -ENOMEM; | |
959 | } | |
960 | ||
961 | codec->ac97->bus->ops = ops; | |
962 | codec->ac97->num = num; | |
963 | mutex_unlock(&codec->mutex); | |
964 | return 0; | |
965 | } | |
966 | EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec); | |
967 | ||
968 | /** | |
969 | * snd_soc_free_ac97_codec - free AC97 codec device | |
970 | * @codec: audio codec | |
971 | * | |
972 | * Frees AC97 codec device resources. | |
973 | */ | |
974 | void snd_soc_free_ac97_codec(struct snd_soc_codec *codec) | |
975 | { | |
976 | mutex_lock(&codec->mutex); | |
977 | kfree(codec->ac97->bus); | |
978 | kfree(codec->ac97); | |
979 | codec->ac97 = NULL; | |
980 | mutex_unlock(&codec->mutex); | |
981 | } | |
982 | EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec); | |
983 | ||
984 | /** | |
985 | * snd_soc_update_bits - update codec register bits | |
986 | * @codec: audio codec | |
987 | * @reg: codec register | |
988 | * @mask: register mask | |
989 | * @value: new value | |
990 | * | |
991 | * Writes new register value. | |
992 | * | |
993 | * Returns 1 for change else 0. | |
994 | */ | |
995 | int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg, | |
996 | unsigned short mask, unsigned short value) | |
997 | { | |
998 | int change; | |
999 | unsigned short old, new; | |
1000 | ||
1001 | mutex_lock(&io_mutex); | |
1002 | old = snd_soc_read(codec, reg); | |
1003 | new = (old & ~mask) | value; | |
1004 | change = old != new; | |
1005 | if (change) | |
1006 | snd_soc_write(codec, reg, new); | |
1007 | ||
1008 | mutex_unlock(&io_mutex); | |
1009 | return change; | |
1010 | } | |
1011 | EXPORT_SYMBOL_GPL(snd_soc_update_bits); | |
1012 | ||
1013 | /** | |
1014 | * snd_soc_test_bits - test register for change | |
1015 | * @codec: audio codec | |
1016 | * @reg: codec register | |
1017 | * @mask: register mask | |
1018 | * @value: new value | |
1019 | * | |
1020 | * Tests a register with a new value and checks if the new value is | |
1021 | * different from the old value. | |
1022 | * | |
1023 | * Returns 1 for change else 0. | |
1024 | */ | |
1025 | int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg, | |
1026 | unsigned short mask, unsigned short value) | |
1027 | { | |
1028 | int change; | |
1029 | unsigned short old, new; | |
1030 | ||
1031 | mutex_lock(&io_mutex); | |
1032 | old = snd_soc_read(codec, reg); | |
1033 | new = (old & ~mask) | value; | |
1034 | change = old != new; | |
1035 | mutex_unlock(&io_mutex); | |
1036 | ||
1037 | return change; | |
1038 | } | |
1039 | EXPORT_SYMBOL_GPL(snd_soc_test_bits); | |
1040 | ||
db2a4165 FM |
1041 | /** |
1042 | * snd_soc_new_pcms - create new sound card and pcms | |
1043 | * @socdev: the SoC audio device | |
1044 | * | |
1045 | * Create a new sound card based upon the codec and interface pcms. | |
1046 | * | |
1047 | * Returns 0 for success, else error. | |
1048 | */ | |
bc7320c5 | 1049 | int snd_soc_new_pcms(struct snd_soc_device *socdev, int idx, const char *xid) |
db2a4165 FM |
1050 | { |
1051 | struct snd_soc_codec *codec = socdev->codec; | |
1052 | struct snd_soc_machine *machine = socdev->machine; | |
1053 | int ret = 0, i; | |
1054 | ||
1055 | mutex_lock(&codec->mutex); | |
1056 | ||
1057 | /* register a sound card */ | |
1058 | codec->card = snd_card_new(idx, xid, codec->owner, 0); | |
1059 | if (!codec->card) { | |
1060 | printk(KERN_ERR "asoc: can't create sound card for codec %s\n", | |
1061 | codec->name); | |
1062 | mutex_unlock(&codec->mutex); | |
1063 | return -ENODEV; | |
1064 | } | |
1065 | ||
1066 | codec->card->dev = socdev->dev; | |
1067 | codec->card->private_data = codec; | |
1068 | strncpy(codec->card->driver, codec->name, sizeof(codec->card->driver)); | |
1069 | ||
1070 | /* create the pcms */ | |
1071 | for(i = 0; i < machine->num_links; i++) { | |
1072 | ret = soc_new_pcm(socdev, &machine->dai_link[i], i); | |
1073 | if (ret < 0) { | |
1074 | printk(KERN_ERR "asoc: can't create pcm %s\n", | |
1075 | machine->dai_link[i].stream_name); | |
1076 | mutex_unlock(&codec->mutex); | |
1077 | return ret; | |
1078 | } | |
1079 | } | |
1080 | ||
1081 | mutex_unlock(&codec->mutex); | |
1082 | return ret; | |
1083 | } | |
1084 | EXPORT_SYMBOL_GPL(snd_soc_new_pcms); | |
1085 | ||
1086 | /** | |
1087 | * snd_soc_register_card - register sound card | |
1088 | * @socdev: the SoC audio device | |
1089 | * | |
1090 | * Register a SoC sound card. Also registers an AC97 device if the | |
1091 | * codec is AC97 for ad hoc devices. | |
1092 | * | |
1093 | * Returns 0 for success, else error. | |
1094 | */ | |
1095 | int snd_soc_register_card(struct snd_soc_device *socdev) | |
1096 | { | |
1097 | struct snd_soc_codec *codec = socdev->codec; | |
1098 | struct snd_soc_machine *machine = socdev->machine; | |
12e74f7d | 1099 | int ret = 0, i, ac97 = 0, err = 0; |
db2a4165 | 1100 | |
db2a4165 | 1101 | for(i = 0; i < machine->num_links; i++) { |
12e74f7d LG |
1102 | if (socdev->machine->dai_link[i].init) { |
1103 | err = socdev->machine->dai_link[i].init(codec); | |
1104 | if (err < 0) { | |
1105 | printk(KERN_ERR "asoc: failed to init %s\n", | |
1106 | socdev->machine->dai_link[i].stream_name); | |
1107 | continue; | |
1108 | } | |
1109 | } | |
a68660e0 LG |
1110 | if (socdev->machine->dai_link[i].codec_dai->type == |
1111 | SND_SOC_DAI_AC97_BUS) | |
db2a4165 FM |
1112 | ac97 = 1; |
1113 | } | |
1114 | snprintf(codec->card->shortname, sizeof(codec->card->shortname), | |
1115 | "%s", machine->name); | |
1116 | snprintf(codec->card->longname, sizeof(codec->card->longname), | |
1117 | "%s (%s)", machine->name, codec->name); | |
1118 | ||
1119 | ret = snd_card_register(codec->card); | |
1120 | if (ret < 0) { | |
1121 | printk(KERN_ERR "asoc: failed to register soundcard for codec %s\n", | |
1122 | codec->name); | |
12e74f7d | 1123 | goto out; |
db2a4165 FM |
1124 | } |
1125 | ||
08c8efe6 | 1126 | mutex_lock(&codec->mutex); |
db2a4165 | 1127 | #ifdef CONFIG_SND_SOC_AC97_BUS |
12e74f7d LG |
1128 | if (ac97) { |
1129 | ret = soc_ac97_dev_register(codec); | |
1130 | if (ret < 0) { | |
1131 | printk(KERN_ERR "asoc: AC97 device register failed\n"); | |
1132 | snd_card_free(codec->card); | |
08c8efe6 | 1133 | mutex_unlock(&codec->mutex); |
12e74f7d LG |
1134 | goto out; |
1135 | } | |
1136 | } | |
db2a4165 FM |
1137 | #endif |
1138 | ||
12e74f7d LG |
1139 | err = snd_soc_dapm_sys_add(socdev->dev); |
1140 | if (err < 0) | |
1141 | printk(KERN_WARNING "asoc: failed to add dapm sysfs entries\n"); | |
1142 | ||
1143 | err = device_create_file(socdev->dev, &dev_attr_codec_reg); | |
1144 | if (err < 0) | |
1145 | printk(KERN_WARNING "asoc: failed to add codec sysfs entries\n"); | |
08c8efe6 | 1146 | |
db2a4165 | 1147 | mutex_unlock(&codec->mutex); |
08c8efe6 MB |
1148 | |
1149 | out: | |
db2a4165 FM |
1150 | return ret; |
1151 | } | |
1152 | EXPORT_SYMBOL_GPL(snd_soc_register_card); | |
1153 | ||
1154 | /** | |
1155 | * snd_soc_free_pcms - free sound card and pcms | |
1156 | * @socdev: the SoC audio device | |
1157 | * | |
1158 | * Frees sound card and pcms associated with the socdev. | |
1159 | * Also unregister the codec if it is an AC97 device. | |
1160 | */ | |
1161 | void snd_soc_free_pcms(struct snd_soc_device *socdev) | |
1162 | { | |
1163 | struct snd_soc_codec *codec = socdev->codec; | |
a68660e0 LG |
1164 | #ifdef CONFIG_SND_SOC_AC97_BUS |
1165 | struct snd_soc_codec_dai *codec_dai; | |
1166 | int i; | |
1167 | #endif | |
db2a4165 FM |
1168 | |
1169 | mutex_lock(&codec->mutex); | |
1170 | #ifdef CONFIG_SND_SOC_AC97_BUS | |
a68660e0 LG |
1171 | for(i = 0; i < codec->num_dai; i++) { |
1172 | codec_dai = &codec->dai[i]; | |
1173 | if (codec_dai->type == SND_SOC_DAI_AC97_BUS && codec->ac97) { | |
1174 | soc_ac97_dev_unregister(codec); | |
1175 | goto free_card; | |
1176 | } | |
1177 | } | |
1178 | free_card: | |
db2a4165 FM |
1179 | #endif |
1180 | ||
1181 | if (codec->card) | |
1182 | snd_card_free(codec->card); | |
1183 | device_remove_file(socdev->dev, &dev_attr_codec_reg); | |
1184 | mutex_unlock(&codec->mutex); | |
1185 | } | |
1186 | EXPORT_SYMBOL_GPL(snd_soc_free_pcms); | |
1187 | ||
1188 | /** | |
1189 | * snd_soc_set_runtime_hwparams - set the runtime hardware parameters | |
1190 | * @substream: the pcm substream | |
1191 | * @hw: the hardware parameters | |
1192 | * | |
1193 | * Sets the substream runtime hardware parameters. | |
1194 | */ | |
1195 | int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream, | |
1196 | const struct snd_pcm_hardware *hw) | |
1197 | { | |
1198 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1199 | runtime->hw.info = hw->info; | |
1200 | runtime->hw.formats = hw->formats; | |
1201 | runtime->hw.period_bytes_min = hw->period_bytes_min; | |
1202 | runtime->hw.period_bytes_max = hw->period_bytes_max; | |
1203 | runtime->hw.periods_min = hw->periods_min; | |
1204 | runtime->hw.periods_max = hw->periods_max; | |
1205 | runtime->hw.buffer_bytes_max = hw->buffer_bytes_max; | |
1206 | runtime->hw.fifo_size = hw->fifo_size; | |
1207 | return 0; | |
1208 | } | |
1209 | EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams); | |
1210 | ||
1211 | /** | |
1212 | * snd_soc_cnew - create new control | |
1213 | * @_template: control template | |
1214 | * @data: control private data | |
1215 | * @lnng_name: control long name | |
1216 | * | |
1217 | * Create a new mixer control from a template control. | |
1218 | * | |
1219 | * Returns 0 for success, else error. | |
1220 | */ | |
1221 | struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template, | |
1222 | void *data, char *long_name) | |
1223 | { | |
1224 | struct snd_kcontrol_new template; | |
1225 | ||
1226 | memcpy(&template, _template, sizeof(template)); | |
1227 | if (long_name) | |
1228 | template.name = long_name; | |
db2a4165 FM |
1229 | template.index = 0; |
1230 | ||
1231 | return snd_ctl_new1(&template, data); | |
1232 | } | |
1233 | EXPORT_SYMBOL_GPL(snd_soc_cnew); | |
1234 | ||
1235 | /** | |
1236 | * snd_soc_info_enum_double - enumerated double mixer info callback | |
1237 | * @kcontrol: mixer control | |
1238 | * @uinfo: control element information | |
1239 | * | |
1240 | * Callback to provide information about a double enumerated | |
1241 | * mixer control. | |
1242 | * | |
1243 | * Returns 0 for success. | |
1244 | */ | |
1245 | int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol, | |
1246 | struct snd_ctl_elem_info *uinfo) | |
1247 | { | |
1248 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1249 | ||
1250 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; | |
1251 | uinfo->count = e->shift_l == e->shift_r ? 1 : 2; | |
1252 | uinfo->value.enumerated.items = e->mask; | |
1253 | ||
1254 | if (uinfo->value.enumerated.item > e->mask - 1) | |
1255 | uinfo->value.enumerated.item = e->mask - 1; | |
1256 | strcpy(uinfo->value.enumerated.name, | |
1257 | e->texts[uinfo->value.enumerated.item]); | |
1258 | return 0; | |
1259 | } | |
1260 | EXPORT_SYMBOL_GPL(snd_soc_info_enum_double); | |
1261 | ||
1262 | /** | |
1263 | * snd_soc_get_enum_double - enumerated double mixer get callback | |
1264 | * @kcontrol: mixer control | |
1265 | * @uinfo: control element information | |
1266 | * | |
1267 | * Callback to get the value of a double enumerated mixer. | |
1268 | * | |
1269 | * Returns 0 for success. | |
1270 | */ | |
1271 | int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol, | |
1272 | struct snd_ctl_elem_value *ucontrol) | |
1273 | { | |
1274 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1275 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1276 | unsigned short val, bitmask; | |
1277 | ||
1278 | for (bitmask = 1; bitmask < e->mask; bitmask <<= 1) | |
1279 | ; | |
1280 | val = snd_soc_read(codec, e->reg); | |
1281 | ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1); | |
1282 | if (e->shift_l != e->shift_r) | |
1283 | ucontrol->value.enumerated.item[1] = | |
1284 | (val >> e->shift_r) & (bitmask - 1); | |
1285 | ||
1286 | return 0; | |
1287 | } | |
1288 | EXPORT_SYMBOL_GPL(snd_soc_get_enum_double); | |
1289 | ||
1290 | /** | |
1291 | * snd_soc_put_enum_double - enumerated double mixer put callback | |
1292 | * @kcontrol: mixer control | |
1293 | * @uinfo: control element information | |
1294 | * | |
1295 | * Callback to set the value of a double enumerated mixer. | |
1296 | * | |
1297 | * Returns 0 for success. | |
1298 | */ | |
1299 | int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol, | |
1300 | struct snd_ctl_elem_value *ucontrol) | |
1301 | { | |
1302 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1303 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1304 | unsigned short val; | |
1305 | unsigned short mask, bitmask; | |
1306 | ||
1307 | for (bitmask = 1; bitmask < e->mask; bitmask <<= 1) | |
1308 | ; | |
1309 | if (ucontrol->value.enumerated.item[0] > e->mask - 1) | |
1310 | return -EINVAL; | |
1311 | val = ucontrol->value.enumerated.item[0] << e->shift_l; | |
1312 | mask = (bitmask - 1) << e->shift_l; | |
1313 | if (e->shift_l != e->shift_r) { | |
1314 | if (ucontrol->value.enumerated.item[1] > e->mask - 1) | |
1315 | return -EINVAL; | |
1316 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
1317 | mask |= (bitmask - 1) << e->shift_r; | |
1318 | } | |
1319 | ||
1320 | return snd_soc_update_bits(codec, e->reg, mask, val); | |
1321 | } | |
1322 | EXPORT_SYMBOL_GPL(snd_soc_put_enum_double); | |
1323 | ||
1324 | /** | |
1325 | * snd_soc_info_enum_ext - external enumerated single mixer info callback | |
1326 | * @kcontrol: mixer control | |
1327 | * @uinfo: control element information | |
1328 | * | |
1329 | * Callback to provide information about an external enumerated | |
1330 | * single mixer. | |
1331 | * | |
1332 | * Returns 0 for success. | |
1333 | */ | |
1334 | int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol, | |
1335 | struct snd_ctl_elem_info *uinfo) | |
1336 | { | |
1337 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1338 | ||
1339 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; | |
1340 | uinfo->count = 1; | |
1341 | uinfo->value.enumerated.items = e->mask; | |
1342 | ||
1343 | if (uinfo->value.enumerated.item > e->mask - 1) | |
1344 | uinfo->value.enumerated.item = e->mask - 1; | |
1345 | strcpy(uinfo->value.enumerated.name, | |
1346 | e->texts[uinfo->value.enumerated.item]); | |
1347 | return 0; | |
1348 | } | |
1349 | EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext); | |
1350 | ||
1351 | /** | |
1352 | * snd_soc_info_volsw_ext - external single mixer info callback | |
1353 | * @kcontrol: mixer control | |
1354 | * @uinfo: control element information | |
1355 | * | |
1356 | * Callback to provide information about a single external mixer control. | |
1357 | * | |
1358 | * Returns 0 for success. | |
1359 | */ | |
1360 | int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol, | |
1361 | struct snd_ctl_elem_info *uinfo) | |
1362 | { | |
a7a4ac86 PZ |
1363 | int max = kcontrol->private_value; |
1364 | ||
1365 | if (max == 1) | |
1366 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1367 | else | |
1368 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
db2a4165 | 1369 | |
db2a4165 FM |
1370 | uinfo->count = 1; |
1371 | uinfo->value.integer.min = 0; | |
a7a4ac86 | 1372 | uinfo->value.integer.max = max; |
db2a4165 FM |
1373 | return 0; |
1374 | } | |
1375 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext); | |
1376 | ||
db2a4165 FM |
1377 | /** |
1378 | * snd_soc_info_volsw - single mixer info callback | |
1379 | * @kcontrol: mixer control | |
1380 | * @uinfo: control element information | |
1381 | * | |
1382 | * Callback to provide information about a single mixer control. | |
1383 | * | |
1384 | * Returns 0 for success. | |
1385 | */ | |
1386 | int snd_soc_info_volsw(struct snd_kcontrol *kcontrol, | |
1387 | struct snd_ctl_elem_info *uinfo) | |
1388 | { | |
a7a4ac86 | 1389 | int max = (kcontrol->private_value >> 16) & 0xff; |
db2a4165 FM |
1390 | int shift = (kcontrol->private_value >> 8) & 0x0f; |
1391 | int rshift = (kcontrol->private_value >> 12) & 0x0f; | |
1392 | ||
a7a4ac86 PZ |
1393 | if (max == 1) |
1394 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1395 | else | |
1396 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
1397 | ||
db2a4165 FM |
1398 | uinfo->count = shift == rshift ? 1 : 2; |
1399 | uinfo->value.integer.min = 0; | |
a7a4ac86 | 1400 | uinfo->value.integer.max = max; |
db2a4165 FM |
1401 | return 0; |
1402 | } | |
1403 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw); | |
1404 | ||
1405 | /** | |
1406 | * snd_soc_get_volsw - single mixer get callback | |
1407 | * @kcontrol: mixer control | |
1408 | * @uinfo: control element information | |
1409 | * | |
1410 | * Callback to get the value of a single mixer control. | |
1411 | * | |
1412 | * Returns 0 for success. | |
1413 | */ | |
1414 | int snd_soc_get_volsw(struct snd_kcontrol *kcontrol, | |
1415 | struct snd_ctl_elem_value *ucontrol) | |
1416 | { | |
1417 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1418 | int reg = kcontrol->private_value & 0xff; | |
1419 | int shift = (kcontrol->private_value >> 8) & 0x0f; | |
1420 | int rshift = (kcontrol->private_value >> 12) & 0x0f; | |
a7a4ac86 PZ |
1421 | int max = (kcontrol->private_value >> 16) & 0xff; |
1422 | int mask = (1 << fls(max)) - 1; | |
db2a4165 FM |
1423 | int invert = (kcontrol->private_value >> 24) & 0x01; |
1424 | ||
1425 | ucontrol->value.integer.value[0] = | |
1426 | (snd_soc_read(codec, reg) >> shift) & mask; | |
1427 | if (shift != rshift) | |
1428 | ucontrol->value.integer.value[1] = | |
1429 | (snd_soc_read(codec, reg) >> rshift) & mask; | |
1430 | if (invert) { | |
1431 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1432 | max - ucontrol->value.integer.value[0]; |
db2a4165 FM |
1433 | if (shift != rshift) |
1434 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 1435 | max - ucontrol->value.integer.value[1]; |
db2a4165 FM |
1436 | } |
1437 | ||
1438 | return 0; | |
1439 | } | |
1440 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw); | |
1441 | ||
1442 | /** | |
1443 | * snd_soc_put_volsw - single mixer put callback | |
1444 | * @kcontrol: mixer control | |
1445 | * @uinfo: control element information | |
1446 | * | |
1447 | * Callback to set the value of a single mixer control. | |
1448 | * | |
1449 | * Returns 0 for success. | |
1450 | */ | |
1451 | int snd_soc_put_volsw(struct snd_kcontrol *kcontrol, | |
1452 | struct snd_ctl_elem_value *ucontrol) | |
1453 | { | |
1454 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1455 | int reg = kcontrol->private_value & 0xff; | |
1456 | int shift = (kcontrol->private_value >> 8) & 0x0f; | |
1457 | int rshift = (kcontrol->private_value >> 12) & 0x0f; | |
a7a4ac86 PZ |
1458 | int max = (kcontrol->private_value >> 16) & 0xff; |
1459 | int mask = (1 << fls(max)) - 1; | |
db2a4165 | 1460 | int invert = (kcontrol->private_value >> 24) & 0x01; |
db2a4165 FM |
1461 | unsigned short val, val2, val_mask; |
1462 | ||
1463 | val = (ucontrol->value.integer.value[0] & mask); | |
1464 | if (invert) | |
a7a4ac86 | 1465 | val = max - val; |
db2a4165 FM |
1466 | val_mask = mask << shift; |
1467 | val = val << shift; | |
1468 | if (shift != rshift) { | |
1469 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1470 | if (invert) | |
a7a4ac86 | 1471 | val2 = max - val2; |
db2a4165 FM |
1472 | val_mask |= mask << rshift; |
1473 | val |= val2 << rshift; | |
1474 | } | |
a7a4ac86 | 1475 | return snd_soc_update_bits(codec, reg, val_mask, val); |
db2a4165 FM |
1476 | } |
1477 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw); | |
1478 | ||
1479 | /** | |
1480 | * snd_soc_info_volsw_2r - double mixer info callback | |
1481 | * @kcontrol: mixer control | |
1482 | * @uinfo: control element information | |
1483 | * | |
1484 | * Callback to provide information about a double mixer control that | |
1485 | * spans 2 codec registers. | |
1486 | * | |
1487 | * Returns 0 for success. | |
1488 | */ | |
1489 | int snd_soc_info_volsw_2r(struct snd_kcontrol *kcontrol, | |
1490 | struct snd_ctl_elem_info *uinfo) | |
1491 | { | |
a7a4ac86 PZ |
1492 | int max = (kcontrol->private_value >> 12) & 0xff; |
1493 | ||
1494 | if (max == 1) | |
1495 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1496 | else | |
1497 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
db2a4165 | 1498 | |
db2a4165 FM |
1499 | uinfo->count = 2; |
1500 | uinfo->value.integer.min = 0; | |
a7a4ac86 | 1501 | uinfo->value.integer.max = max; |
db2a4165 FM |
1502 | return 0; |
1503 | } | |
1504 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r); | |
1505 | ||
1506 | /** | |
1507 | * snd_soc_get_volsw_2r - double mixer get callback | |
1508 | * @kcontrol: mixer control | |
1509 | * @uinfo: control element information | |
1510 | * | |
1511 | * Callback to get the value of a double mixer control that spans 2 registers. | |
1512 | * | |
1513 | * Returns 0 for success. | |
1514 | */ | |
1515 | int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol, | |
1516 | struct snd_ctl_elem_value *ucontrol) | |
1517 | { | |
1518 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1519 | int reg = kcontrol->private_value & 0xff; | |
1520 | int reg2 = (kcontrol->private_value >> 24) & 0xff; | |
1521 | int shift = (kcontrol->private_value >> 8) & 0x0f; | |
a7a4ac86 PZ |
1522 | int max = (kcontrol->private_value >> 12) & 0xff; |
1523 | int mask = (1<<fls(max))-1; | |
db2a4165 FM |
1524 | int invert = (kcontrol->private_value >> 20) & 0x01; |
1525 | ||
1526 | ucontrol->value.integer.value[0] = | |
1527 | (snd_soc_read(codec, reg) >> shift) & mask; | |
1528 | ucontrol->value.integer.value[1] = | |
1529 | (snd_soc_read(codec, reg2) >> shift) & mask; | |
1530 | if (invert) { | |
1531 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1532 | max - ucontrol->value.integer.value[0]; |
db2a4165 | 1533 | ucontrol->value.integer.value[1] = |
a7a4ac86 | 1534 | max - ucontrol->value.integer.value[1]; |
db2a4165 FM |
1535 | } |
1536 | ||
1537 | return 0; | |
1538 | } | |
1539 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r); | |
1540 | ||
1541 | /** | |
1542 | * snd_soc_put_volsw_2r - double mixer set callback | |
1543 | * @kcontrol: mixer control | |
1544 | * @uinfo: control element information | |
1545 | * | |
1546 | * Callback to set the value of a double mixer control that spans 2 registers. | |
1547 | * | |
1548 | * Returns 0 for success. | |
1549 | */ | |
1550 | int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol, | |
1551 | struct snd_ctl_elem_value *ucontrol) | |
1552 | { | |
1553 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1554 | int reg = kcontrol->private_value & 0xff; | |
1555 | int reg2 = (kcontrol->private_value >> 24) & 0xff; | |
1556 | int shift = (kcontrol->private_value >> 8) & 0x0f; | |
a7a4ac86 PZ |
1557 | int max = (kcontrol->private_value >> 12) & 0xff; |
1558 | int mask = (1 << fls(max)) - 1; | |
db2a4165 FM |
1559 | int invert = (kcontrol->private_value >> 20) & 0x01; |
1560 | int err; | |
1561 | unsigned short val, val2, val_mask; | |
1562 | ||
1563 | val_mask = mask << shift; | |
1564 | val = (ucontrol->value.integer.value[0] & mask); | |
1565 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1566 | ||
1567 | if (invert) { | |
a7a4ac86 PZ |
1568 | val = max - val; |
1569 | val2 = max - val2; | |
db2a4165 FM |
1570 | } |
1571 | ||
1572 | val = val << shift; | |
1573 | val2 = val2 << shift; | |
1574 | ||
1575 | if ((err = snd_soc_update_bits(codec, reg, val_mask, val)) < 0) | |
1576 | return err; | |
1577 | ||
1578 | err = snd_soc_update_bits(codec, reg2, val_mask, val2); | |
1579 | return err; | |
1580 | } | |
1581 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r); | |
1582 | ||
1583 | static int __devinit snd_soc_init(void) | |
1584 | { | |
1585 | printk(KERN_INFO "ASoC version %s\n", SND_SOC_VERSION); | |
1586 | return platform_driver_register(&soc_driver); | |
1587 | } | |
1588 | ||
1589 | static void snd_soc_exit(void) | |
1590 | { | |
1591 | platform_driver_unregister(&soc_driver); | |
1592 | } | |
1593 | ||
1594 | module_init(snd_soc_init); | |
1595 | module_exit(snd_soc_exit); | |
1596 | ||
1597 | /* Module information */ | |
1598 | MODULE_AUTHOR("Liam Girdwood, liam.girdwood@wolfsonmicro.com, www.wolfsonmicro.com"); | |
1599 | MODULE_DESCRIPTION("ALSA SoC Core"); | |
1600 | MODULE_LICENSE("GPL"); | |
8b45a209 | 1601 | MODULE_ALIAS("platform:soc-audio"); |