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> | |
db2a4165 FM |
35 | #include <sound/core.h> |
36 | #include <sound/pcm.h> | |
37 | #include <sound/pcm_params.h> | |
38 | #include <sound/soc.h> | |
39 | #include <sound/soc-dapm.h> | |
40 | #include <sound/initval.h> | |
41 | ||
42 | /* debug */ | |
43 | #define SOC_DEBUG 0 | |
44 | #if SOC_DEBUG | |
45 | #define dbg(format, arg...) printk(format, ## arg) | |
46 | #else | |
47 | #define dbg(format, arg...) | |
48 | #endif | |
a71a468a | 49 | |
db2a4165 FM |
50 | static DEFINE_MUTEX(pcm_mutex); |
51 | static DEFINE_MUTEX(io_mutex); | |
db2a4165 FM |
52 | static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq); |
53 | ||
db2a4165 FM |
54 | /* |
55 | * This is a timeout to do a DAPM powerdown after a stream is closed(). | |
56 | * It can be used to eliminate pops between different playback streams, e.g. | |
57 | * between two audio tracks. | |
58 | */ | |
59 | static int pmdown_time = 5000; | |
60 | module_param(pmdown_time, int, 0); | |
61 | MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)"); | |
62 | ||
965ac42c LG |
63 | /* |
64 | * This function forces any delayed work to be queued and run. | |
65 | */ | |
66 | static int run_delayed_work(struct delayed_work *dwork) | |
67 | { | |
68 | int ret; | |
69 | ||
70 | /* cancel any work waiting to be queued. */ | |
71 | ret = cancel_delayed_work(dwork); | |
72 | ||
73 | /* if there was any work waiting then we run it now and | |
74 | * wait for it's completion */ | |
75 | if (ret) { | |
76 | schedule_delayed_work(dwork, 0); | |
77 | flush_scheduled_work(); | |
78 | } | |
79 | return ret; | |
80 | } | |
81 | ||
db2a4165 FM |
82 | #ifdef CONFIG_SND_SOC_AC97_BUS |
83 | /* unregister ac97 codec */ | |
84 | static int soc_ac97_dev_unregister(struct snd_soc_codec *codec) | |
85 | { | |
86 | if (codec->ac97->dev.bus) | |
87 | device_unregister(&codec->ac97->dev); | |
88 | return 0; | |
89 | } | |
90 | ||
91 | /* stop no dev release warning */ | |
92 | static void soc_ac97_device_release(struct device *dev){} | |
93 | ||
94 | /* register ac97 codec to bus */ | |
95 | static int soc_ac97_dev_register(struct snd_soc_codec *codec) | |
96 | { | |
97 | int err; | |
98 | ||
99 | codec->ac97->dev.bus = &ac97_bus_type; | |
100 | codec->ac97->dev.parent = NULL; | |
101 | codec->ac97->dev.release = soc_ac97_device_release; | |
102 | ||
103 | snprintf(codec->ac97->dev.bus_id, BUS_ID_SIZE, "%d-%d:%s", | |
104 | codec->card->number, 0, codec->name); | |
105 | err = device_register(&codec->ac97->dev); | |
106 | if (err < 0) { | |
107 | snd_printk(KERN_ERR "Can't register ac97 bus\n"); | |
108 | codec->ac97->dev.bus = NULL; | |
109 | return err; | |
110 | } | |
111 | return 0; | |
112 | } | |
113 | #endif | |
114 | ||
115 | static inline const char* get_dai_name(int type) | |
116 | { | |
117 | switch(type) { | |
a68660e0 | 118 | case SND_SOC_DAI_AC97_BUS: |
db2a4165 FM |
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 | /* | |
3a4fa0a2 | 266 | * Power down the audio subsystem pmdown_time msecs after close is called. |
db2a4165 FM |
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 | ||
3c1c47e0 LG |
290 | /* power down the codec to D1 if no longer active */ |
291 | if (codec->active == 0) { | |
292 | dbg("pop wq D1 %s %s\n", codec->name, | |
293 | codec_dai->playback.stream_name); | |
294 | snd_soc_dapm_device_event(socdev, | |
295 | SNDRV_CTL_POWER_D1); | |
296 | } | |
297 | ||
db2a4165 | 298 | codec_dai->pop_wait = 0; |
0b4d221b LG |
299 | snd_soc_dapm_stream_event(codec, |
300 | codec_dai->playback.stream_name, | |
db2a4165 FM |
301 | SND_SOC_DAPM_STREAM_STOP); |
302 | ||
303 | /* power down the codec power domain if no longer active */ | |
304 | if (codec->active == 0) { | |
305 | dbg("pop wq D3 %s %s\n", codec->name, | |
306 | codec_dai->playback.stream_name); | |
0b4d221b LG |
307 | snd_soc_dapm_device_event(socdev, |
308 | SNDRV_CTL_POWER_D3hot); | |
db2a4165 FM |
309 | } |
310 | } | |
311 | } | |
312 | mutex_unlock(&pcm_mutex); | |
313 | } | |
314 | ||
315 | /* | |
316 | * Called by ALSA when a PCM substream is closed. Private data can be | |
317 | * freed here. The cpu DAI, codec DAI, machine and platform are also | |
318 | * shutdown. | |
319 | */ | |
320 | static int soc_codec_close(struct snd_pcm_substream *substream) | |
321 | { | |
322 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
323 | struct snd_soc_device *socdev = rtd->socdev; | |
cb666e5b | 324 | struct snd_soc_dai_link *machine = rtd->dai; |
db2a4165 | 325 | struct snd_soc_platform *platform = socdev->platform; |
cb666e5b LG |
326 | struct snd_soc_cpu_dai *cpu_dai = machine->cpu_dai; |
327 | struct snd_soc_codec_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
328 | struct snd_soc_codec *codec = socdev->codec; |
329 | ||
330 | mutex_lock(&pcm_mutex); | |
331 | ||
332 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
cb666e5b | 333 | cpu_dai->playback.active = codec_dai->playback.active = 0; |
db2a4165 | 334 | else |
cb666e5b | 335 | cpu_dai->capture.active = codec_dai->capture.active = 0; |
db2a4165 | 336 | |
cb666e5b LG |
337 | if (codec_dai->playback.active == 0 && |
338 | codec_dai->capture.active == 0) { | |
339 | cpu_dai->active = codec_dai->active = 0; | |
db2a4165 FM |
340 | } |
341 | codec->active--; | |
342 | ||
cb666e5b LG |
343 | if (cpu_dai->ops.shutdown) |
344 | cpu_dai->ops.shutdown(substream); | |
db2a4165 | 345 | |
cb666e5b LG |
346 | if (codec_dai->ops.shutdown) |
347 | codec_dai->ops.shutdown(substream); | |
db2a4165 FM |
348 | |
349 | if (machine->ops && machine->ops->shutdown) | |
350 | machine->ops->shutdown(substream); | |
351 | ||
352 | if (platform->pcm_ops->close) | |
353 | platform->pcm_ops->close(substream); | |
cb666e5b | 354 | cpu_dai->runtime = NULL; |
db2a4165 FM |
355 | |
356 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
357 | /* start delayed pop wq here for playback streams */ | |
cb666e5b | 358 | codec_dai->pop_wait = 1; |
4bb09523 | 359 | schedule_delayed_work(&socdev->delayed_work, |
db2a4165 FM |
360 | msecs_to_jiffies(pmdown_time)); |
361 | } else { | |
362 | /* capture streams can be powered down now */ | |
cb666e5b | 363 | snd_soc_dapm_stream_event(codec, |
0b4d221b LG |
364 | codec_dai->capture.stream_name, |
365 | SND_SOC_DAPM_STREAM_STOP); | |
db2a4165 | 366 | |
0b4d221b LG |
367 | if (codec->active == 0 && codec_dai->pop_wait == 0) |
368 | snd_soc_dapm_device_event(socdev, | |
369 | SNDRV_CTL_POWER_D3hot); | |
db2a4165 FM |
370 | } |
371 | ||
372 | mutex_unlock(&pcm_mutex); | |
373 | return 0; | |
374 | } | |
375 | ||
376 | /* | |
377 | * Called by ALSA when the PCM substream is prepared, can set format, sample | |
378 | * rate, etc. This function is non atomic and can be called multiple times, | |
379 | * it can refer to the runtime info. | |
380 | */ | |
381 | static int soc_pcm_prepare(struct snd_pcm_substream *substream) | |
382 | { | |
383 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
384 | struct snd_soc_device *socdev = rtd->socdev; | |
cb666e5b | 385 | struct snd_soc_dai_link *machine = rtd->dai; |
db2a4165 | 386 | struct snd_soc_platform *platform = socdev->platform; |
cb666e5b LG |
387 | struct snd_soc_cpu_dai *cpu_dai = machine->cpu_dai; |
388 | struct snd_soc_codec_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
389 | struct snd_soc_codec *codec = socdev->codec; |
390 | int ret = 0; | |
391 | ||
392 | mutex_lock(&pcm_mutex); | |
cb666e5b LG |
393 | |
394 | if (machine->ops && machine->ops->prepare) { | |
395 | ret = machine->ops->prepare(substream); | |
396 | if (ret < 0) { | |
397 | printk(KERN_ERR "asoc: machine prepare error\n"); | |
398 | goto out; | |
399 | } | |
400 | } | |
401 | ||
db2a4165 FM |
402 | if (platform->pcm_ops->prepare) { |
403 | ret = platform->pcm_ops->prepare(substream); | |
a71a468a LG |
404 | if (ret < 0) { |
405 | printk(KERN_ERR "asoc: platform prepare error\n"); | |
db2a4165 | 406 | goto out; |
a71a468a | 407 | } |
db2a4165 FM |
408 | } |
409 | ||
cb666e5b LG |
410 | if (codec_dai->ops.prepare) { |
411 | ret = codec_dai->ops.prepare(substream); | |
a71a468a LG |
412 | if (ret < 0) { |
413 | printk(KERN_ERR "asoc: codec DAI prepare error\n"); | |
db2a4165 | 414 | goto out; |
a71a468a | 415 | } |
db2a4165 FM |
416 | } |
417 | ||
cb666e5b LG |
418 | if (cpu_dai->ops.prepare) { |
419 | ret = cpu_dai->ops.prepare(substream); | |
420 | if (ret < 0) { | |
421 | printk(KERN_ERR "asoc: cpu DAI prepare error\n"); | |
422 | goto out; | |
423 | } | |
424 | } | |
db2a4165 FM |
425 | |
426 | /* we only want to start a DAPM playback stream if we are not waiting | |
427 | * on an existing one stopping */ | |
cb666e5b | 428 | if (codec_dai->pop_wait) { |
db2a4165 FM |
429 | /* we are waiting for the delayed work to start */ |
430 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
cb666e5b LG |
431 | snd_soc_dapm_stream_event(socdev->codec, |
432 | codec_dai->capture.stream_name, | |
db2a4165 FM |
433 | SND_SOC_DAPM_STREAM_START); |
434 | else { | |
cb666e5b | 435 | codec_dai->pop_wait = 0; |
4484bb2e | 436 | cancel_delayed_work(&socdev->delayed_work); |
cb666e5b LG |
437 | if (codec_dai->dai_ops.digital_mute) |
438 | codec_dai->dai_ops.digital_mute(codec_dai, 0); | |
db2a4165 FM |
439 | } |
440 | } else { | |
441 | /* no delayed work - do we need to power up codec */ | |
442 | if (codec->dapm_state != SNDRV_CTL_POWER_D0) { | |
443 | ||
0b4d221b | 444 | snd_soc_dapm_device_event(socdev, SNDRV_CTL_POWER_D1); |
db2a4165 FM |
445 | |
446 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
447 | snd_soc_dapm_stream_event(codec, | |
cb666e5b | 448 | codec_dai->playback.stream_name, |
db2a4165 FM |
449 | SND_SOC_DAPM_STREAM_START); |
450 | else | |
451 | snd_soc_dapm_stream_event(codec, | |
cb666e5b | 452 | codec_dai->capture.stream_name, |
db2a4165 FM |
453 | SND_SOC_DAPM_STREAM_START); |
454 | ||
0b4d221b | 455 | snd_soc_dapm_device_event(socdev, SNDRV_CTL_POWER_D0); |
cb666e5b LG |
456 | if (codec_dai->dai_ops.digital_mute) |
457 | codec_dai->dai_ops.digital_mute(codec_dai, 0); | |
db2a4165 FM |
458 | |
459 | } else { | |
460 | /* codec already powered - power on widgets */ | |
461 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
462 | snd_soc_dapm_stream_event(codec, | |
cb666e5b | 463 | codec_dai->playback.stream_name, |
db2a4165 FM |
464 | SND_SOC_DAPM_STREAM_START); |
465 | else | |
466 | snd_soc_dapm_stream_event(codec, | |
cb666e5b | 467 | codec_dai->capture.stream_name, |
db2a4165 | 468 | SND_SOC_DAPM_STREAM_START); |
cb666e5b LG |
469 | if (codec_dai->dai_ops.digital_mute) |
470 | codec_dai->dai_ops.digital_mute(codec_dai, 0); | |
db2a4165 FM |
471 | } |
472 | } | |
473 | ||
474 | out: | |
475 | mutex_unlock(&pcm_mutex); | |
476 | return ret; | |
477 | } | |
478 | ||
479 | /* | |
480 | * Called by ALSA when the hardware params are set by application. This | |
481 | * function can also be called multiple times and can allocate buffers | |
482 | * (using snd_pcm_lib_* ). It's non-atomic. | |
483 | */ | |
484 | static int soc_pcm_hw_params(struct snd_pcm_substream *substream, | |
485 | struct snd_pcm_hw_params *params) | |
486 | { | |
487 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
488 | struct snd_soc_device *socdev = rtd->socdev; | |
cb666e5b | 489 | struct snd_soc_dai_link *machine = rtd->dai; |
db2a4165 | 490 | struct snd_soc_platform *platform = socdev->platform; |
cb666e5b LG |
491 | struct snd_soc_cpu_dai *cpu_dai = machine->cpu_dai; |
492 | struct snd_soc_codec_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
493 | int ret = 0; |
494 | ||
495 | mutex_lock(&pcm_mutex); | |
496 | ||
cb666e5b LG |
497 | if (machine->ops && machine->ops->hw_params) { |
498 | ret = machine->ops->hw_params(substream, params); | |
499 | if (ret < 0) { | |
500 | printk(KERN_ERR "asoc: machine hw_params failed\n"); | |
db2a4165 | 501 | goto out; |
cb666e5b | 502 | } |
db2a4165 FM |
503 | } |
504 | ||
cb666e5b LG |
505 | if (codec_dai->ops.hw_params) { |
506 | ret = codec_dai->ops.hw_params(substream, params); | |
db2a4165 FM |
507 | if (ret < 0) { |
508 | printk(KERN_ERR "asoc: can't set codec %s hw params\n", | |
cb666e5b LG |
509 | codec_dai->name); |
510 | goto codec_err; | |
db2a4165 FM |
511 | } |
512 | } | |
513 | ||
cb666e5b LG |
514 | if (cpu_dai->ops.hw_params) { |
515 | ret = cpu_dai->ops.hw_params(substream, params); | |
db2a4165 FM |
516 | if (ret < 0) { |
517 | printk(KERN_ERR "asoc: can't set interface %s hw params\n", | |
cb666e5b | 518 | cpu_dai->name); |
db2a4165 FM |
519 | goto interface_err; |
520 | } | |
521 | } | |
522 | ||
523 | if (platform->pcm_ops->hw_params) { | |
524 | ret = platform->pcm_ops->hw_params(substream, params); | |
525 | if (ret < 0) { | |
526 | printk(KERN_ERR "asoc: can't set platform %s hw params\n", | |
527 | platform->name); | |
528 | goto platform_err; | |
529 | } | |
530 | } | |
531 | ||
db2a4165 FM |
532 | out: |
533 | mutex_unlock(&pcm_mutex); | |
534 | return ret; | |
535 | ||
db2a4165 | 536 | platform_err: |
cb666e5b LG |
537 | if (cpu_dai->ops.hw_free) |
538 | cpu_dai->ops.hw_free(substream); | |
db2a4165 FM |
539 | |
540 | interface_err: | |
cb666e5b LG |
541 | if (codec_dai->ops.hw_free) |
542 | codec_dai->ops.hw_free(substream); | |
543 | ||
544 | codec_err: | |
545 | if(machine->ops && machine->ops->hw_free) | |
546 | machine->ops->hw_free(substream); | |
db2a4165 FM |
547 | |
548 | mutex_unlock(&pcm_mutex); | |
549 | return ret; | |
550 | } | |
551 | ||
552 | /* | |
553 | * Free's resources allocated by hw_params, can be called multiple times | |
554 | */ | |
555 | static int soc_pcm_hw_free(struct snd_pcm_substream *substream) | |
556 | { | |
557 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
558 | struct snd_soc_device *socdev = rtd->socdev; | |
cb666e5b | 559 | struct snd_soc_dai_link *machine = rtd->dai; |
db2a4165 | 560 | struct snd_soc_platform *platform = socdev->platform; |
cb666e5b LG |
561 | struct snd_soc_cpu_dai *cpu_dai = machine->cpu_dai; |
562 | struct snd_soc_codec_dai *codec_dai = machine->codec_dai; | |
db2a4165 | 563 | struct snd_soc_codec *codec = socdev->codec; |
db2a4165 FM |
564 | |
565 | mutex_lock(&pcm_mutex); | |
566 | ||
567 | /* apply codec digital mute */ | |
cb666e5b LG |
568 | if (!codec->active && codec_dai->dai_ops.digital_mute) |
569 | codec_dai->dai_ops.digital_mute(codec_dai, 1); | |
db2a4165 FM |
570 | |
571 | /* free any machine hw params */ | |
572 | if (machine->ops && machine->ops->hw_free) | |
573 | machine->ops->hw_free(substream); | |
574 | ||
575 | /* free any DMA resources */ | |
576 | if (platform->pcm_ops->hw_free) | |
577 | platform->pcm_ops->hw_free(substream); | |
578 | ||
579 | /* now free hw params for the DAI's */ | |
cb666e5b LG |
580 | if (codec_dai->ops.hw_free) |
581 | codec_dai->ops.hw_free(substream); | |
db2a4165 | 582 | |
cb666e5b LG |
583 | if (cpu_dai->ops.hw_free) |
584 | cpu_dai->ops.hw_free(substream); | |
db2a4165 FM |
585 | |
586 | mutex_unlock(&pcm_mutex); | |
587 | return 0; | |
588 | } | |
589 | ||
590 | static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd) | |
591 | { | |
592 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
593 | struct snd_soc_device *socdev = rtd->socdev; | |
cb666e5b | 594 | struct snd_soc_dai_link *machine = rtd->dai; |
db2a4165 | 595 | struct snd_soc_platform *platform = socdev->platform; |
cb666e5b LG |
596 | struct snd_soc_cpu_dai *cpu_dai = machine->cpu_dai; |
597 | struct snd_soc_codec_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
598 | int ret; |
599 | ||
cb666e5b LG |
600 | if (codec_dai->ops.trigger) { |
601 | ret = codec_dai->ops.trigger(substream, cmd); | |
db2a4165 FM |
602 | if (ret < 0) |
603 | return ret; | |
604 | } | |
605 | ||
606 | if (platform->pcm_ops->trigger) { | |
607 | ret = platform->pcm_ops->trigger(substream, cmd); | |
608 | if (ret < 0) | |
609 | return ret; | |
610 | } | |
611 | ||
cb666e5b LG |
612 | if (cpu_dai->ops.trigger) { |
613 | ret = cpu_dai->ops.trigger(substream, cmd); | |
db2a4165 FM |
614 | if (ret < 0) |
615 | return ret; | |
616 | } | |
617 | return 0; | |
618 | } | |
619 | ||
620 | /* ASoC PCM operations */ | |
621 | static struct snd_pcm_ops soc_pcm_ops = { | |
622 | .open = soc_pcm_open, | |
623 | .close = soc_codec_close, | |
624 | .hw_params = soc_pcm_hw_params, | |
625 | .hw_free = soc_pcm_hw_free, | |
626 | .prepare = soc_pcm_prepare, | |
627 | .trigger = soc_pcm_trigger, | |
628 | }; | |
629 | ||
630 | #ifdef CONFIG_PM | |
631 | /* powers down audio subsystem for suspend */ | |
632 | static int soc_suspend(struct platform_device *pdev, pm_message_t state) | |
633 | { | |
634 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
635 | struct snd_soc_machine *machine = socdev->machine; | |
636 | struct snd_soc_platform *platform = socdev->platform; | |
637 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; | |
638 | struct snd_soc_codec *codec = socdev->codec; | |
639 | int i; | |
640 | ||
641 | /* mute any active DAC's */ | |
642 | for(i = 0; i < machine->num_links; i++) { | |
643 | struct snd_soc_codec_dai *dai = machine->dai_link[i].codec_dai; | |
cb666e5b LG |
644 | if (dai->dai_ops.digital_mute && dai->playback.active) |
645 | dai->dai_ops.digital_mute(dai, 1); | |
db2a4165 FM |
646 | } |
647 | ||
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", | |
838 | }, | |
839 | .probe = soc_probe, | |
840 | .remove = soc_remove, | |
841 | .suspend = soc_suspend, | |
842 | .resume = soc_resume, | |
843 | }; | |
844 | ||
845 | /* create a new pcm */ | |
846 | static int soc_new_pcm(struct snd_soc_device *socdev, | |
847 | struct snd_soc_dai_link *dai_link, int num) | |
848 | { | |
849 | struct snd_soc_codec *codec = socdev->codec; | |
850 | struct snd_soc_codec_dai *codec_dai = dai_link->codec_dai; | |
851 | struct snd_soc_cpu_dai *cpu_dai = dai_link->cpu_dai; | |
852 | struct snd_soc_pcm_runtime *rtd; | |
853 | struct snd_pcm *pcm; | |
854 | char new_name[64]; | |
855 | int ret = 0, playback = 0, capture = 0; | |
856 | ||
857 | rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime), GFP_KERNEL); | |
858 | if (rtd == NULL) | |
859 | return -ENOMEM; | |
cb666e5b LG |
860 | |
861 | rtd->dai = dai_link; | |
db2a4165 | 862 | rtd->socdev = socdev; |
cb666e5b | 863 | codec_dai->codec = socdev->codec; |
db2a4165 FM |
864 | |
865 | /* check client and interface hw capabilities */ | |
866 | sprintf(new_name, "%s %s-%s-%d",dai_link->stream_name, codec_dai->name, | |
867 | get_dai_name(cpu_dai->type), num); | |
868 | ||
869 | if (codec_dai->playback.channels_min) | |
870 | playback = 1; | |
871 | if (codec_dai->capture.channels_min) | |
872 | capture = 1; | |
873 | ||
874 | ret = snd_pcm_new(codec->card, new_name, codec->pcm_devs++, playback, | |
875 | capture, &pcm); | |
876 | if (ret < 0) { | |
877 | printk(KERN_ERR "asoc: can't create pcm for codec %s\n", codec->name); | |
878 | kfree(rtd); | |
879 | return ret; | |
880 | } | |
881 | ||
882 | pcm->private_data = rtd; | |
883 | soc_pcm_ops.mmap = socdev->platform->pcm_ops->mmap; | |
884 | soc_pcm_ops.pointer = socdev->platform->pcm_ops->pointer; | |
885 | soc_pcm_ops.ioctl = socdev->platform->pcm_ops->ioctl; | |
886 | soc_pcm_ops.copy = socdev->platform->pcm_ops->copy; | |
887 | soc_pcm_ops.silence = socdev->platform->pcm_ops->silence; | |
888 | soc_pcm_ops.ack = socdev->platform->pcm_ops->ack; | |
889 | soc_pcm_ops.page = socdev->platform->pcm_ops->page; | |
890 | ||
891 | if (playback) | |
892 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &soc_pcm_ops); | |
893 | ||
894 | if (capture) | |
895 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &soc_pcm_ops); | |
896 | ||
897 | ret = socdev->platform->pcm_new(codec->card, codec_dai, pcm); | |
898 | if (ret < 0) { | |
899 | printk(KERN_ERR "asoc: platform pcm constructor failed\n"); | |
900 | kfree(rtd); | |
901 | return ret; | |
902 | } | |
903 | ||
904 | pcm->private_free = socdev->platform->pcm_free; | |
905 | printk(KERN_INFO "asoc: %s <-> %s mapping ok\n", codec_dai->name, | |
906 | cpu_dai->name); | |
907 | return ret; | |
908 | } | |
909 | ||
910 | /* codec register dump */ | |
911 | static ssize_t codec_reg_show(struct device *dev, | |
912 | struct device_attribute *attr, char *buf) | |
913 | { | |
914 | struct snd_soc_device *devdata = dev_get_drvdata(dev); | |
915 | struct snd_soc_codec *codec = devdata->codec; | |
916 | int i, step = 1, count = 0; | |
917 | ||
918 | if (!codec->reg_cache_size) | |
919 | return 0; | |
920 | ||
921 | if (codec->reg_cache_step) | |
922 | step = codec->reg_cache_step; | |
923 | ||
924 | count += sprintf(buf, "%s registers\n", codec->name); | |
925 | for(i = 0; i < codec->reg_cache_size; i += step) | |
926 | count += sprintf(buf + count, "%2x: %4x\n", i, codec->read(codec, i)); | |
927 | ||
928 | return count; | |
929 | } | |
930 | static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL); | |
931 | ||
932 | /** | |
933 | * snd_soc_new_ac97_codec - initailise AC97 device | |
934 | * @codec: audio codec | |
935 | * @ops: AC97 bus operations | |
936 | * @num: AC97 codec number | |
937 | * | |
938 | * Initialises AC97 codec resources for use by ad-hoc devices only. | |
939 | */ | |
940 | int snd_soc_new_ac97_codec(struct snd_soc_codec *codec, | |
941 | struct snd_ac97_bus_ops *ops, int num) | |
942 | { | |
943 | mutex_lock(&codec->mutex); | |
944 | ||
945 | codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL); | |
946 | if (codec->ac97 == NULL) { | |
947 | mutex_unlock(&codec->mutex); | |
948 | return -ENOMEM; | |
949 | } | |
950 | ||
951 | codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL); | |
952 | if (codec->ac97->bus == NULL) { | |
953 | kfree(codec->ac97); | |
954 | codec->ac97 = NULL; | |
955 | mutex_unlock(&codec->mutex); | |
956 | return -ENOMEM; | |
957 | } | |
958 | ||
959 | codec->ac97->bus->ops = ops; | |
960 | codec->ac97->num = num; | |
961 | mutex_unlock(&codec->mutex); | |
962 | return 0; | |
963 | } | |
964 | EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec); | |
965 | ||
966 | /** | |
967 | * snd_soc_free_ac97_codec - free AC97 codec device | |
968 | * @codec: audio codec | |
969 | * | |
970 | * Frees AC97 codec device resources. | |
971 | */ | |
972 | void snd_soc_free_ac97_codec(struct snd_soc_codec *codec) | |
973 | { | |
974 | mutex_lock(&codec->mutex); | |
975 | kfree(codec->ac97->bus); | |
976 | kfree(codec->ac97); | |
977 | codec->ac97 = NULL; | |
978 | mutex_unlock(&codec->mutex); | |
979 | } | |
980 | EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec); | |
981 | ||
982 | /** | |
983 | * snd_soc_update_bits - update codec register bits | |
984 | * @codec: audio codec | |
985 | * @reg: codec register | |
986 | * @mask: register mask | |
987 | * @value: new value | |
988 | * | |
989 | * Writes new register value. | |
990 | * | |
991 | * Returns 1 for change else 0. | |
992 | */ | |
993 | int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg, | |
994 | unsigned short mask, unsigned short value) | |
995 | { | |
996 | int change; | |
997 | unsigned short old, new; | |
998 | ||
999 | mutex_lock(&io_mutex); | |
1000 | old = snd_soc_read(codec, reg); | |
1001 | new = (old & ~mask) | value; | |
1002 | change = old != new; | |
1003 | if (change) | |
1004 | snd_soc_write(codec, reg, new); | |
1005 | ||
1006 | mutex_unlock(&io_mutex); | |
1007 | return change; | |
1008 | } | |
1009 | EXPORT_SYMBOL_GPL(snd_soc_update_bits); | |
1010 | ||
1011 | /** | |
1012 | * snd_soc_test_bits - test register for change | |
1013 | * @codec: audio codec | |
1014 | * @reg: codec register | |
1015 | * @mask: register mask | |
1016 | * @value: new value | |
1017 | * | |
1018 | * Tests a register with a new value and checks if the new value is | |
1019 | * different from the old value. | |
1020 | * | |
1021 | * Returns 1 for change else 0. | |
1022 | */ | |
1023 | int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg, | |
1024 | unsigned short mask, unsigned short value) | |
1025 | { | |
1026 | int change; | |
1027 | unsigned short old, new; | |
1028 | ||
1029 | mutex_lock(&io_mutex); | |
1030 | old = snd_soc_read(codec, reg); | |
1031 | new = (old & ~mask) | value; | |
1032 | change = old != new; | |
1033 | mutex_unlock(&io_mutex); | |
1034 | ||
1035 | return change; | |
1036 | } | |
1037 | EXPORT_SYMBOL_GPL(snd_soc_test_bits); | |
1038 | ||
db2a4165 FM |
1039 | /** |
1040 | * snd_soc_new_pcms - create new sound card and pcms | |
1041 | * @socdev: the SoC audio device | |
1042 | * | |
1043 | * Create a new sound card based upon the codec and interface pcms. | |
1044 | * | |
1045 | * Returns 0 for success, else error. | |
1046 | */ | |
bc7320c5 | 1047 | int snd_soc_new_pcms(struct snd_soc_device *socdev, int idx, const char *xid) |
db2a4165 FM |
1048 | { |
1049 | struct snd_soc_codec *codec = socdev->codec; | |
1050 | struct snd_soc_machine *machine = socdev->machine; | |
1051 | int ret = 0, i; | |
1052 | ||
1053 | mutex_lock(&codec->mutex); | |
1054 | ||
1055 | /* register a sound card */ | |
1056 | codec->card = snd_card_new(idx, xid, codec->owner, 0); | |
1057 | if (!codec->card) { | |
1058 | printk(KERN_ERR "asoc: can't create sound card for codec %s\n", | |
1059 | codec->name); | |
1060 | mutex_unlock(&codec->mutex); | |
1061 | return -ENODEV; | |
1062 | } | |
1063 | ||
1064 | codec->card->dev = socdev->dev; | |
1065 | codec->card->private_data = codec; | |
1066 | strncpy(codec->card->driver, codec->name, sizeof(codec->card->driver)); | |
1067 | ||
1068 | /* create the pcms */ | |
1069 | for(i = 0; i < machine->num_links; i++) { | |
1070 | ret = soc_new_pcm(socdev, &machine->dai_link[i], i); | |
1071 | if (ret < 0) { | |
1072 | printk(KERN_ERR "asoc: can't create pcm %s\n", | |
1073 | machine->dai_link[i].stream_name); | |
1074 | mutex_unlock(&codec->mutex); | |
1075 | return ret; | |
1076 | } | |
1077 | } | |
1078 | ||
1079 | mutex_unlock(&codec->mutex); | |
1080 | return ret; | |
1081 | } | |
1082 | EXPORT_SYMBOL_GPL(snd_soc_new_pcms); | |
1083 | ||
1084 | /** | |
1085 | * snd_soc_register_card - register sound card | |
1086 | * @socdev: the SoC audio device | |
1087 | * | |
1088 | * Register a SoC sound card. Also registers an AC97 device if the | |
1089 | * codec is AC97 for ad hoc devices. | |
1090 | * | |
1091 | * Returns 0 for success, else error. | |
1092 | */ | |
1093 | int snd_soc_register_card(struct snd_soc_device *socdev) | |
1094 | { | |
1095 | struct snd_soc_codec *codec = socdev->codec; | |
1096 | struct snd_soc_machine *machine = socdev->machine; | |
12e74f7d | 1097 | int ret = 0, i, ac97 = 0, err = 0; |
db2a4165 FM |
1098 | |
1099 | mutex_lock(&codec->mutex); | |
1100 | for(i = 0; i < machine->num_links; i++) { | |
12e74f7d LG |
1101 | if (socdev->machine->dai_link[i].init) { |
1102 | err = socdev->machine->dai_link[i].init(codec); | |
1103 | if (err < 0) { | |
1104 | printk(KERN_ERR "asoc: failed to init %s\n", | |
1105 | socdev->machine->dai_link[i].stream_name); | |
1106 | continue; | |
1107 | } | |
1108 | } | |
a68660e0 LG |
1109 | if (socdev->machine->dai_link[i].codec_dai->type == |
1110 | SND_SOC_DAI_AC97_BUS) | |
db2a4165 FM |
1111 | ac97 = 1; |
1112 | } | |
1113 | snprintf(codec->card->shortname, sizeof(codec->card->shortname), | |
1114 | "%s", machine->name); | |
1115 | snprintf(codec->card->longname, sizeof(codec->card->longname), | |
1116 | "%s (%s)", machine->name, codec->name); | |
1117 | ||
1118 | ret = snd_card_register(codec->card); | |
1119 | if (ret < 0) { | |
1120 | printk(KERN_ERR "asoc: failed to register soundcard for codec %s\n", | |
1121 | codec->name); | |
12e74f7d | 1122 | goto out; |
db2a4165 FM |
1123 | } |
1124 | ||
1125 | #ifdef CONFIG_SND_SOC_AC97_BUS | |
12e74f7d LG |
1126 | if (ac97) { |
1127 | ret = soc_ac97_dev_register(codec); | |
1128 | if (ret < 0) { | |
1129 | printk(KERN_ERR "asoc: AC97 device register failed\n"); | |
1130 | snd_card_free(codec->card); | |
1131 | goto out; | |
1132 | } | |
1133 | } | |
db2a4165 FM |
1134 | #endif |
1135 | ||
12e74f7d LG |
1136 | err = snd_soc_dapm_sys_add(socdev->dev); |
1137 | if (err < 0) | |
1138 | printk(KERN_WARNING "asoc: failed to add dapm sysfs entries\n"); | |
1139 | ||
1140 | err = device_create_file(socdev->dev, &dev_attr_codec_reg); | |
1141 | if (err < 0) | |
1142 | printk(KERN_WARNING "asoc: failed to add codec sysfs entries\n"); | |
1143 | out: | |
db2a4165 FM |
1144 | mutex_unlock(&codec->mutex); |
1145 | return ret; | |
1146 | } | |
1147 | EXPORT_SYMBOL_GPL(snd_soc_register_card); | |
1148 | ||
1149 | /** | |
1150 | * snd_soc_free_pcms - free sound card and pcms | |
1151 | * @socdev: the SoC audio device | |
1152 | * | |
1153 | * Frees sound card and pcms associated with the socdev. | |
1154 | * Also unregister the codec if it is an AC97 device. | |
1155 | */ | |
1156 | void snd_soc_free_pcms(struct snd_soc_device *socdev) | |
1157 | { | |
1158 | struct snd_soc_codec *codec = socdev->codec; | |
a68660e0 LG |
1159 | #ifdef CONFIG_SND_SOC_AC97_BUS |
1160 | struct snd_soc_codec_dai *codec_dai; | |
1161 | int i; | |
1162 | #endif | |
db2a4165 FM |
1163 | |
1164 | mutex_lock(&codec->mutex); | |
1165 | #ifdef CONFIG_SND_SOC_AC97_BUS | |
a68660e0 LG |
1166 | for(i = 0; i < codec->num_dai; i++) { |
1167 | codec_dai = &codec->dai[i]; | |
1168 | if (codec_dai->type == SND_SOC_DAI_AC97_BUS && codec->ac97) { | |
1169 | soc_ac97_dev_unregister(codec); | |
1170 | goto free_card; | |
1171 | } | |
1172 | } | |
1173 | free_card: | |
db2a4165 FM |
1174 | #endif |
1175 | ||
1176 | if (codec->card) | |
1177 | snd_card_free(codec->card); | |
1178 | device_remove_file(socdev->dev, &dev_attr_codec_reg); | |
1179 | mutex_unlock(&codec->mutex); | |
1180 | } | |
1181 | EXPORT_SYMBOL_GPL(snd_soc_free_pcms); | |
1182 | ||
1183 | /** | |
1184 | * snd_soc_set_runtime_hwparams - set the runtime hardware parameters | |
1185 | * @substream: the pcm substream | |
1186 | * @hw: the hardware parameters | |
1187 | * | |
1188 | * Sets the substream runtime hardware parameters. | |
1189 | */ | |
1190 | int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream, | |
1191 | const struct snd_pcm_hardware *hw) | |
1192 | { | |
1193 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1194 | runtime->hw.info = hw->info; | |
1195 | runtime->hw.formats = hw->formats; | |
1196 | runtime->hw.period_bytes_min = hw->period_bytes_min; | |
1197 | runtime->hw.period_bytes_max = hw->period_bytes_max; | |
1198 | runtime->hw.periods_min = hw->periods_min; | |
1199 | runtime->hw.periods_max = hw->periods_max; | |
1200 | runtime->hw.buffer_bytes_max = hw->buffer_bytes_max; | |
1201 | runtime->hw.fifo_size = hw->fifo_size; | |
1202 | return 0; | |
1203 | } | |
1204 | EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams); | |
1205 | ||
1206 | /** | |
1207 | * snd_soc_cnew - create new control | |
1208 | * @_template: control template | |
1209 | * @data: control private data | |
1210 | * @lnng_name: control long name | |
1211 | * | |
1212 | * Create a new mixer control from a template control. | |
1213 | * | |
1214 | * Returns 0 for success, else error. | |
1215 | */ | |
1216 | struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template, | |
1217 | void *data, char *long_name) | |
1218 | { | |
1219 | struct snd_kcontrol_new template; | |
1220 | ||
1221 | memcpy(&template, _template, sizeof(template)); | |
1222 | if (long_name) | |
1223 | template.name = long_name; | |
db2a4165 FM |
1224 | template.index = 0; |
1225 | ||
1226 | return snd_ctl_new1(&template, data); | |
1227 | } | |
1228 | EXPORT_SYMBOL_GPL(snd_soc_cnew); | |
1229 | ||
1230 | /** | |
1231 | * snd_soc_info_enum_double - enumerated double mixer info callback | |
1232 | * @kcontrol: mixer control | |
1233 | * @uinfo: control element information | |
1234 | * | |
1235 | * Callback to provide information about a double enumerated | |
1236 | * mixer control. | |
1237 | * | |
1238 | * Returns 0 for success. | |
1239 | */ | |
1240 | int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol, | |
1241 | struct snd_ctl_elem_info *uinfo) | |
1242 | { | |
1243 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1244 | ||
1245 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; | |
1246 | uinfo->count = e->shift_l == e->shift_r ? 1 : 2; | |
1247 | uinfo->value.enumerated.items = e->mask; | |
1248 | ||
1249 | if (uinfo->value.enumerated.item > e->mask - 1) | |
1250 | uinfo->value.enumerated.item = e->mask - 1; | |
1251 | strcpy(uinfo->value.enumerated.name, | |
1252 | e->texts[uinfo->value.enumerated.item]); | |
1253 | return 0; | |
1254 | } | |
1255 | EXPORT_SYMBOL_GPL(snd_soc_info_enum_double); | |
1256 | ||
1257 | /** | |
1258 | * snd_soc_get_enum_double - enumerated double mixer get callback | |
1259 | * @kcontrol: mixer control | |
1260 | * @uinfo: control element information | |
1261 | * | |
1262 | * Callback to get the value of a double enumerated mixer. | |
1263 | * | |
1264 | * Returns 0 for success. | |
1265 | */ | |
1266 | int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol, | |
1267 | struct snd_ctl_elem_value *ucontrol) | |
1268 | { | |
1269 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1270 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1271 | unsigned short val, bitmask; | |
1272 | ||
1273 | for (bitmask = 1; bitmask < e->mask; bitmask <<= 1) | |
1274 | ; | |
1275 | val = snd_soc_read(codec, e->reg); | |
1276 | ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1); | |
1277 | if (e->shift_l != e->shift_r) | |
1278 | ucontrol->value.enumerated.item[1] = | |
1279 | (val >> e->shift_r) & (bitmask - 1); | |
1280 | ||
1281 | return 0; | |
1282 | } | |
1283 | EXPORT_SYMBOL_GPL(snd_soc_get_enum_double); | |
1284 | ||
1285 | /** | |
1286 | * snd_soc_put_enum_double - enumerated double mixer put callback | |
1287 | * @kcontrol: mixer control | |
1288 | * @uinfo: control element information | |
1289 | * | |
1290 | * Callback to set the value of a double enumerated mixer. | |
1291 | * | |
1292 | * Returns 0 for success. | |
1293 | */ | |
1294 | int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol, | |
1295 | struct snd_ctl_elem_value *ucontrol) | |
1296 | { | |
1297 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1298 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1299 | unsigned short val; | |
1300 | unsigned short mask, bitmask; | |
1301 | ||
1302 | for (bitmask = 1; bitmask < e->mask; bitmask <<= 1) | |
1303 | ; | |
1304 | if (ucontrol->value.enumerated.item[0] > e->mask - 1) | |
1305 | return -EINVAL; | |
1306 | val = ucontrol->value.enumerated.item[0] << e->shift_l; | |
1307 | mask = (bitmask - 1) << e->shift_l; | |
1308 | if (e->shift_l != e->shift_r) { | |
1309 | if (ucontrol->value.enumerated.item[1] > e->mask - 1) | |
1310 | return -EINVAL; | |
1311 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
1312 | mask |= (bitmask - 1) << e->shift_r; | |
1313 | } | |
1314 | ||
1315 | return snd_soc_update_bits(codec, e->reg, mask, val); | |
1316 | } | |
1317 | EXPORT_SYMBOL_GPL(snd_soc_put_enum_double); | |
1318 | ||
1319 | /** | |
1320 | * snd_soc_info_enum_ext - external enumerated single mixer info callback | |
1321 | * @kcontrol: mixer control | |
1322 | * @uinfo: control element information | |
1323 | * | |
1324 | * Callback to provide information about an external enumerated | |
1325 | * single mixer. | |
1326 | * | |
1327 | * Returns 0 for success. | |
1328 | */ | |
1329 | int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol, | |
1330 | struct snd_ctl_elem_info *uinfo) | |
1331 | { | |
1332 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1333 | ||
1334 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; | |
1335 | uinfo->count = 1; | |
1336 | uinfo->value.enumerated.items = e->mask; | |
1337 | ||
1338 | if (uinfo->value.enumerated.item > e->mask - 1) | |
1339 | uinfo->value.enumerated.item = e->mask - 1; | |
1340 | strcpy(uinfo->value.enumerated.name, | |
1341 | e->texts[uinfo->value.enumerated.item]); | |
1342 | return 0; | |
1343 | } | |
1344 | EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext); | |
1345 | ||
1346 | /** | |
1347 | * snd_soc_info_volsw_ext - external single mixer info callback | |
1348 | * @kcontrol: mixer control | |
1349 | * @uinfo: control element information | |
1350 | * | |
1351 | * Callback to provide information about a single external mixer control. | |
1352 | * | |
1353 | * Returns 0 for success. | |
1354 | */ | |
1355 | int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol, | |
1356 | struct snd_ctl_elem_info *uinfo) | |
1357 | { | |
a7a4ac86 PZ |
1358 | int max = kcontrol->private_value; |
1359 | ||
1360 | if (max == 1) | |
1361 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1362 | else | |
1363 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
db2a4165 | 1364 | |
db2a4165 FM |
1365 | uinfo->count = 1; |
1366 | uinfo->value.integer.min = 0; | |
a7a4ac86 | 1367 | uinfo->value.integer.max = max; |
db2a4165 FM |
1368 | return 0; |
1369 | } | |
1370 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext); | |
1371 | ||
db2a4165 FM |
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 | { | |
a7a4ac86 | 1384 | int max = (kcontrol->private_value >> 16) & 0xff; |
db2a4165 FM |
1385 | int shift = (kcontrol->private_value >> 8) & 0x0f; |
1386 | int rshift = (kcontrol->private_value >> 12) & 0x0f; | |
1387 | ||
a7a4ac86 PZ |
1388 | if (max == 1) |
1389 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1390 | else | |
1391 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
1392 | ||
db2a4165 FM |
1393 | uinfo->count = shift == rshift ? 1 : 2; |
1394 | uinfo->value.integer.min = 0; | |
a7a4ac86 | 1395 | uinfo->value.integer.max = max; |
db2a4165 FM |
1396 | return 0; |
1397 | } | |
1398 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw); | |
1399 | ||
1400 | /** | |
1401 | * snd_soc_get_volsw - single mixer get callback | |
1402 | * @kcontrol: mixer control | |
1403 | * @uinfo: control element information | |
1404 | * | |
1405 | * Callback to get the value of a single mixer control. | |
1406 | * | |
1407 | * Returns 0 for success. | |
1408 | */ | |
1409 | int snd_soc_get_volsw(struct snd_kcontrol *kcontrol, | |
1410 | struct snd_ctl_elem_value *ucontrol) | |
1411 | { | |
1412 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1413 | int reg = kcontrol->private_value & 0xff; | |
1414 | int shift = (kcontrol->private_value >> 8) & 0x0f; | |
1415 | int rshift = (kcontrol->private_value >> 12) & 0x0f; | |
a7a4ac86 PZ |
1416 | int max = (kcontrol->private_value >> 16) & 0xff; |
1417 | int mask = (1 << fls(max)) - 1; | |
db2a4165 FM |
1418 | int invert = (kcontrol->private_value >> 24) & 0x01; |
1419 | ||
1420 | ucontrol->value.integer.value[0] = | |
1421 | (snd_soc_read(codec, reg) >> shift) & mask; | |
1422 | if (shift != rshift) | |
1423 | ucontrol->value.integer.value[1] = | |
1424 | (snd_soc_read(codec, reg) >> rshift) & mask; | |
1425 | if (invert) { | |
1426 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1427 | max - ucontrol->value.integer.value[0]; |
db2a4165 FM |
1428 | if (shift != rshift) |
1429 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 1430 | max - ucontrol->value.integer.value[1]; |
db2a4165 FM |
1431 | } |
1432 | ||
1433 | return 0; | |
1434 | } | |
1435 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw); | |
1436 | ||
1437 | /** | |
1438 | * snd_soc_put_volsw - single mixer put callback | |
1439 | * @kcontrol: mixer control | |
1440 | * @uinfo: control element information | |
1441 | * | |
1442 | * Callback to set the value of a single mixer control. | |
1443 | * | |
1444 | * Returns 0 for success. | |
1445 | */ | |
1446 | int snd_soc_put_volsw(struct snd_kcontrol *kcontrol, | |
1447 | struct snd_ctl_elem_value *ucontrol) | |
1448 | { | |
1449 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1450 | int reg = kcontrol->private_value & 0xff; | |
1451 | int shift = (kcontrol->private_value >> 8) & 0x0f; | |
1452 | int rshift = (kcontrol->private_value >> 12) & 0x0f; | |
a7a4ac86 PZ |
1453 | int max = (kcontrol->private_value >> 16) & 0xff; |
1454 | int mask = (1 << fls(max)) - 1; | |
db2a4165 | 1455 | int invert = (kcontrol->private_value >> 24) & 0x01; |
db2a4165 FM |
1456 | unsigned short val, val2, val_mask; |
1457 | ||
1458 | val = (ucontrol->value.integer.value[0] & mask); | |
1459 | if (invert) | |
a7a4ac86 | 1460 | val = max - val; |
db2a4165 FM |
1461 | val_mask = mask << shift; |
1462 | val = val << shift; | |
1463 | if (shift != rshift) { | |
1464 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1465 | if (invert) | |
a7a4ac86 | 1466 | val2 = max - val2; |
db2a4165 FM |
1467 | val_mask |= mask << rshift; |
1468 | val |= val2 << rshift; | |
1469 | } | |
a7a4ac86 | 1470 | return snd_soc_update_bits(codec, reg, val_mask, val); |
db2a4165 FM |
1471 | } |
1472 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw); | |
1473 | ||
1474 | /** | |
1475 | * snd_soc_info_volsw_2r - double mixer info callback | |
1476 | * @kcontrol: mixer control | |
1477 | * @uinfo: control element information | |
1478 | * | |
1479 | * Callback to provide information about a double mixer control that | |
1480 | * spans 2 codec registers. | |
1481 | * | |
1482 | * Returns 0 for success. | |
1483 | */ | |
1484 | int snd_soc_info_volsw_2r(struct snd_kcontrol *kcontrol, | |
1485 | struct snd_ctl_elem_info *uinfo) | |
1486 | { | |
a7a4ac86 PZ |
1487 | int max = (kcontrol->private_value >> 12) & 0xff; |
1488 | ||
1489 | if (max == 1) | |
1490 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1491 | else | |
1492 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
db2a4165 | 1493 | |
db2a4165 FM |
1494 | uinfo->count = 2; |
1495 | uinfo->value.integer.min = 0; | |
a7a4ac86 | 1496 | uinfo->value.integer.max = max; |
db2a4165 FM |
1497 | return 0; |
1498 | } | |
1499 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r); | |
1500 | ||
1501 | /** | |
1502 | * snd_soc_get_volsw_2r - double mixer get callback | |
1503 | * @kcontrol: mixer control | |
1504 | * @uinfo: control element information | |
1505 | * | |
1506 | * Callback to get the value of a double mixer control that spans 2 registers. | |
1507 | * | |
1508 | * Returns 0 for success. | |
1509 | */ | |
1510 | int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol, | |
1511 | struct snd_ctl_elem_value *ucontrol) | |
1512 | { | |
1513 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1514 | int reg = kcontrol->private_value & 0xff; | |
1515 | int reg2 = (kcontrol->private_value >> 24) & 0xff; | |
1516 | int shift = (kcontrol->private_value >> 8) & 0x0f; | |
a7a4ac86 PZ |
1517 | int max = (kcontrol->private_value >> 12) & 0xff; |
1518 | int mask = (1<<fls(max))-1; | |
db2a4165 FM |
1519 | int invert = (kcontrol->private_value >> 20) & 0x01; |
1520 | ||
1521 | ucontrol->value.integer.value[0] = | |
1522 | (snd_soc_read(codec, reg) >> shift) & mask; | |
1523 | ucontrol->value.integer.value[1] = | |
1524 | (snd_soc_read(codec, reg2) >> shift) & mask; | |
1525 | if (invert) { | |
1526 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1527 | max - ucontrol->value.integer.value[0]; |
db2a4165 | 1528 | ucontrol->value.integer.value[1] = |
a7a4ac86 | 1529 | max - ucontrol->value.integer.value[1]; |
db2a4165 FM |
1530 | } |
1531 | ||
1532 | return 0; | |
1533 | } | |
1534 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r); | |
1535 | ||
1536 | /** | |
1537 | * snd_soc_put_volsw_2r - double mixer set callback | |
1538 | * @kcontrol: mixer control | |
1539 | * @uinfo: control element information | |
1540 | * | |
1541 | * Callback to set the value of a double mixer control that spans 2 registers. | |
1542 | * | |
1543 | * Returns 0 for success. | |
1544 | */ | |
1545 | int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol, | |
1546 | struct snd_ctl_elem_value *ucontrol) | |
1547 | { | |
1548 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1549 | int reg = kcontrol->private_value & 0xff; | |
1550 | int reg2 = (kcontrol->private_value >> 24) & 0xff; | |
1551 | int shift = (kcontrol->private_value >> 8) & 0x0f; | |
a7a4ac86 PZ |
1552 | int max = (kcontrol->private_value >> 12) & 0xff; |
1553 | int mask = (1 << fls(max)) - 1; | |
db2a4165 FM |
1554 | int invert = (kcontrol->private_value >> 20) & 0x01; |
1555 | int err; | |
1556 | unsigned short val, val2, val_mask; | |
1557 | ||
1558 | val_mask = mask << shift; | |
1559 | val = (ucontrol->value.integer.value[0] & mask); | |
1560 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1561 | ||
1562 | if (invert) { | |
a7a4ac86 PZ |
1563 | val = max - val; |
1564 | val2 = max - val2; | |
db2a4165 FM |
1565 | } |
1566 | ||
1567 | val = val << shift; | |
1568 | val2 = val2 << shift; | |
1569 | ||
1570 | if ((err = snd_soc_update_bits(codec, reg, val_mask, val)) < 0) | |
1571 | return err; | |
1572 | ||
1573 | err = snd_soc_update_bits(codec, reg2, val_mask, val2); | |
1574 | return err; | |
1575 | } | |
1576 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r); | |
1577 | ||
1578 | static int __devinit snd_soc_init(void) | |
1579 | { | |
1580 | printk(KERN_INFO "ASoC version %s\n", SND_SOC_VERSION); | |
1581 | return platform_driver_register(&soc_driver); | |
1582 | } | |
1583 | ||
1584 | static void snd_soc_exit(void) | |
1585 | { | |
1586 | platform_driver_unregister(&soc_driver); | |
1587 | } | |
1588 | ||
1589 | module_init(snd_soc_init); | |
1590 | module_exit(snd_soc_exit); | |
1591 | ||
1592 | /* Module information */ | |
1593 | MODULE_AUTHOR("Liam Girdwood, liam.girdwood@wolfsonmicro.com, www.wolfsonmicro.com"); | |
1594 | MODULE_DESCRIPTION("ALSA SoC Core"); | |
1595 | MODULE_LICENSE("GPL"); |