Commit | Line | Data |
---|---|---|
db2a4165 FM |
1 | /* |
2 | * soc-core.c -- ALSA SoC Audio Layer | |
3 | * | |
4 | * Copyright 2005 Wolfson Microelectronics PLC. | |
0664d888 LG |
5 | * Copyright 2005 Openedhand Ltd. |
6 | * | |
d331124d | 7 | * Author: Liam Girdwood <lrg@slimlogic.co.uk> |
0664d888 LG |
8 | * with code, comments and ideas from :- |
9 | * Richard Purdie <richard@openedhand.com> | |
db2a4165 FM |
10 | * |
11 | * This program is free software; you can redistribute it and/or modify it | |
12 | * under the terms of the GNU General Public License as published by the | |
13 | * Free Software Foundation; either version 2 of the License, or (at your | |
14 | * option) any later version. | |
15 | * | |
db2a4165 FM |
16 | * TODO: |
17 | * o Add hw rules to enforce rates, etc. | |
18 | * o More testing with other codecs/machines. | |
19 | * o Add more codecs and platforms to ensure good API coverage. | |
20 | * o Support TDM on PCM and I2S | |
21 | */ | |
22 | ||
23 | #include <linux/module.h> | |
24 | #include <linux/moduleparam.h> | |
25 | #include <linux/init.h> | |
26 | #include <linux/delay.h> | |
27 | #include <linux/pm.h> | |
28 | #include <linux/bitops.h> | |
12ef193d | 29 | #include <linux/debugfs.h> |
db2a4165 | 30 | #include <linux/platform_device.h> |
db2a4165 FM |
31 | #include <sound/core.h> |
32 | #include <sound/pcm.h> | |
33 | #include <sound/pcm_params.h> | |
34 | #include <sound/soc.h> | |
35 | #include <sound/soc-dapm.h> | |
36 | #include <sound/initval.h> | |
37 | ||
db2a4165 FM |
38 | static DEFINE_MUTEX(pcm_mutex); |
39 | static DEFINE_MUTEX(io_mutex); | |
db2a4165 FM |
40 | static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq); |
41 | ||
384c89e2 MB |
42 | #ifdef CONFIG_DEBUG_FS |
43 | static struct dentry *debugfs_root; | |
44 | #endif | |
45 | ||
c5af3a2e MB |
46 | static DEFINE_MUTEX(client_mutex); |
47 | static LIST_HEAD(card_list); | |
48 | ||
49 | static int snd_soc_register_card(struct snd_soc_card *card); | |
50 | static int snd_soc_unregister_card(struct snd_soc_card *card); | |
51 | ||
db2a4165 FM |
52 | /* |
53 | * This is a timeout to do a DAPM powerdown after a stream is closed(). | |
54 | * It can be used to eliminate pops between different playback streams, e.g. | |
55 | * between two audio tracks. | |
56 | */ | |
57 | static int pmdown_time = 5000; | |
58 | module_param(pmdown_time, int, 0); | |
59 | MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)"); | |
60 | ||
965ac42c LG |
61 | /* |
62 | * This function forces any delayed work to be queued and run. | |
63 | */ | |
64 | static int run_delayed_work(struct delayed_work *dwork) | |
65 | { | |
66 | int ret; | |
67 | ||
68 | /* cancel any work waiting to be queued. */ | |
69 | ret = cancel_delayed_work(dwork); | |
70 | ||
71 | /* if there was any work waiting then we run it now and | |
72 | * wait for it's completion */ | |
73 | if (ret) { | |
74 | schedule_delayed_work(dwork, 0); | |
75 | flush_scheduled_work(); | |
76 | } | |
77 | return ret; | |
78 | } | |
79 | ||
db2a4165 FM |
80 | #ifdef CONFIG_SND_SOC_AC97_BUS |
81 | /* unregister ac97 codec */ | |
82 | static int soc_ac97_dev_unregister(struct snd_soc_codec *codec) | |
83 | { | |
84 | if (codec->ac97->dev.bus) | |
85 | device_unregister(&codec->ac97->dev); | |
86 | return 0; | |
87 | } | |
88 | ||
89 | /* stop no dev release warning */ | |
90 | static void soc_ac97_device_release(struct device *dev){} | |
91 | ||
92 | /* register ac97 codec to bus */ | |
93 | static int soc_ac97_dev_register(struct snd_soc_codec *codec) | |
94 | { | |
95 | int err; | |
96 | ||
97 | codec->ac97->dev.bus = &ac97_bus_type; | |
98 | codec->ac97->dev.parent = NULL; | |
99 | codec->ac97->dev.release = soc_ac97_device_release; | |
100 | ||
bb072bf0 KS |
101 | dev_set_name(&codec->ac97->dev, "%d-%d:%s", |
102 | codec->card->number, 0, codec->name); | |
db2a4165 FM |
103 | err = device_register(&codec->ac97->dev); |
104 | if (err < 0) { | |
105 | snd_printk(KERN_ERR "Can't register ac97 bus\n"); | |
106 | codec->ac97->dev.bus = NULL; | |
107 | return err; | |
108 | } | |
109 | return 0; | |
110 | } | |
111 | #endif | |
112 | ||
db2a4165 FM |
113 | /* |
114 | * Called by ALSA when a PCM substream is opened, the runtime->hw record is | |
115 | * then initialized and any private data can be allocated. This also calls | |
116 | * startup for the cpu DAI, platform, machine and codec DAI. | |
117 | */ | |
118 | static int soc_pcm_open(struct snd_pcm_substream *substream) | |
119 | { | |
120 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
121 | struct snd_soc_device *socdev = rtd->socdev; | |
87689d56 | 122 | struct snd_soc_card *card = socdev->card; |
db2a4165 | 123 | struct snd_pcm_runtime *runtime = substream->runtime; |
cb666e5b | 124 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 | 125 | struct snd_soc_platform *platform = card->platform; |
3c4b266f LG |
126 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
127 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
128 | int ret = 0; |
129 | ||
130 | mutex_lock(&pcm_mutex); | |
131 | ||
132 | /* startup the audio subsystem */ | |
cb666e5b | 133 | if (cpu_dai->ops.startup) { |
dee89c4d | 134 | ret = cpu_dai->ops.startup(substream, cpu_dai); |
db2a4165 FM |
135 | if (ret < 0) { |
136 | printk(KERN_ERR "asoc: can't open interface %s\n", | |
cb666e5b | 137 | cpu_dai->name); |
db2a4165 FM |
138 | goto out; |
139 | } | |
140 | } | |
141 | ||
142 | if (platform->pcm_ops->open) { | |
143 | ret = platform->pcm_ops->open(substream); | |
144 | if (ret < 0) { | |
145 | printk(KERN_ERR "asoc: can't open platform %s\n", platform->name); | |
146 | goto platform_err; | |
147 | } | |
148 | } | |
149 | ||
cb666e5b | 150 | if (codec_dai->ops.startup) { |
dee89c4d | 151 | ret = codec_dai->ops.startup(substream, codec_dai); |
db2a4165 | 152 | if (ret < 0) { |
cb666e5b LG |
153 | printk(KERN_ERR "asoc: can't open codec %s\n", |
154 | codec_dai->name); | |
155 | goto codec_dai_err; | |
db2a4165 FM |
156 | } |
157 | } | |
158 | ||
cb666e5b LG |
159 | if (machine->ops && machine->ops->startup) { |
160 | ret = machine->ops->startup(substream); | |
db2a4165 | 161 | if (ret < 0) { |
cb666e5b LG |
162 | printk(KERN_ERR "asoc: %s startup failed\n", machine->name); |
163 | goto machine_err; | |
db2a4165 FM |
164 | } |
165 | } | |
166 | ||
db2a4165 FM |
167 | /* Check that the codec and cpu DAI's are compatible */ |
168 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
169 | runtime->hw.rate_min = | |
3ff3f64b MB |
170 | max(codec_dai->playback.rate_min, |
171 | cpu_dai->playback.rate_min); | |
db2a4165 | 172 | runtime->hw.rate_max = |
3ff3f64b MB |
173 | min(codec_dai->playback.rate_max, |
174 | cpu_dai->playback.rate_max); | |
db2a4165 | 175 | runtime->hw.channels_min = |
cb666e5b LG |
176 | max(codec_dai->playback.channels_min, |
177 | cpu_dai->playback.channels_min); | |
db2a4165 | 178 | runtime->hw.channels_max = |
cb666e5b LG |
179 | min(codec_dai->playback.channels_max, |
180 | cpu_dai->playback.channels_max); | |
181 | runtime->hw.formats = | |
182 | codec_dai->playback.formats & cpu_dai->playback.formats; | |
183 | runtime->hw.rates = | |
184 | codec_dai->playback.rates & cpu_dai->playback.rates; | |
db2a4165 FM |
185 | } else { |
186 | runtime->hw.rate_min = | |
3ff3f64b MB |
187 | max(codec_dai->capture.rate_min, |
188 | cpu_dai->capture.rate_min); | |
db2a4165 | 189 | runtime->hw.rate_max = |
3ff3f64b MB |
190 | min(codec_dai->capture.rate_max, |
191 | cpu_dai->capture.rate_max); | |
db2a4165 | 192 | runtime->hw.channels_min = |
cb666e5b LG |
193 | max(codec_dai->capture.channels_min, |
194 | cpu_dai->capture.channels_min); | |
db2a4165 | 195 | runtime->hw.channels_max = |
cb666e5b LG |
196 | min(codec_dai->capture.channels_max, |
197 | cpu_dai->capture.channels_max); | |
198 | runtime->hw.formats = | |
199 | codec_dai->capture.formats & cpu_dai->capture.formats; | |
200 | runtime->hw.rates = | |
201 | codec_dai->capture.rates & cpu_dai->capture.rates; | |
db2a4165 FM |
202 | } |
203 | ||
204 | snd_pcm_limit_hw_rates(runtime); | |
205 | if (!runtime->hw.rates) { | |
206 | printk(KERN_ERR "asoc: %s <-> %s No matching rates\n", | |
cb666e5b LG |
207 | codec_dai->name, cpu_dai->name); |
208 | goto machine_err; | |
db2a4165 FM |
209 | } |
210 | if (!runtime->hw.formats) { | |
211 | printk(KERN_ERR "asoc: %s <-> %s No matching formats\n", | |
cb666e5b LG |
212 | codec_dai->name, cpu_dai->name); |
213 | goto machine_err; | |
db2a4165 FM |
214 | } |
215 | if (!runtime->hw.channels_min || !runtime->hw.channels_max) { | |
216 | printk(KERN_ERR "asoc: %s <-> %s No matching channels\n", | |
cb666e5b LG |
217 | codec_dai->name, cpu_dai->name); |
218 | goto machine_err; | |
db2a4165 FM |
219 | } |
220 | ||
f24368c2 MB |
221 | pr_debug("asoc: %s <-> %s info:\n", codec_dai->name, cpu_dai->name); |
222 | pr_debug("asoc: rate mask 0x%x\n", runtime->hw.rates); | |
223 | pr_debug("asoc: min ch %d max ch %d\n", runtime->hw.channels_min, | |
224 | runtime->hw.channels_max); | |
225 | pr_debug("asoc: min rate %d max rate %d\n", runtime->hw.rate_min, | |
226 | runtime->hw.rate_max); | |
db2a4165 | 227 | |
db2a4165 | 228 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
cb666e5b | 229 | cpu_dai->playback.active = codec_dai->playback.active = 1; |
db2a4165 | 230 | else |
cb666e5b LG |
231 | cpu_dai->capture.active = codec_dai->capture.active = 1; |
232 | cpu_dai->active = codec_dai->active = 1; | |
233 | cpu_dai->runtime = runtime; | |
db2a4165 FM |
234 | socdev->codec->active++; |
235 | mutex_unlock(&pcm_mutex); | |
236 | return 0; | |
237 | ||
cb666e5b | 238 | machine_err: |
db2a4165 FM |
239 | if (machine->ops && machine->ops->shutdown) |
240 | machine->ops->shutdown(substream); | |
241 | ||
cb666e5b | 242 | codec_dai_err: |
db2a4165 FM |
243 | if (platform->pcm_ops->close) |
244 | platform->pcm_ops->close(substream); | |
245 | ||
246 | platform_err: | |
cb666e5b | 247 | if (cpu_dai->ops.shutdown) |
dee89c4d | 248 | cpu_dai->ops.shutdown(substream, cpu_dai); |
db2a4165 FM |
249 | out: |
250 | mutex_unlock(&pcm_mutex); | |
251 | return ret; | |
252 | } | |
253 | ||
254 | /* | |
3a4fa0a2 | 255 | * Power down the audio subsystem pmdown_time msecs after close is called. |
db2a4165 FM |
256 | * This is to ensure there are no pops or clicks in between any music tracks |
257 | * due to DAPM power cycling. | |
258 | */ | |
4484bb2e | 259 | static void close_delayed_work(struct work_struct *work) |
db2a4165 | 260 | { |
6308419a MB |
261 | struct snd_soc_card *card = container_of(work, struct snd_soc_card, |
262 | delayed_work.work); | |
263 | struct snd_soc_device *socdev = card->socdev; | |
db2a4165 | 264 | struct snd_soc_codec *codec = socdev->codec; |
3c4b266f | 265 | struct snd_soc_dai *codec_dai; |
db2a4165 FM |
266 | int i; |
267 | ||
268 | mutex_lock(&pcm_mutex); | |
3ff3f64b | 269 | for (i = 0; i < codec->num_dai; i++) { |
db2a4165 FM |
270 | codec_dai = &codec->dai[i]; |
271 | ||
f24368c2 MB |
272 | pr_debug("pop wq checking: %s status: %s waiting: %s\n", |
273 | codec_dai->playback.stream_name, | |
274 | codec_dai->playback.active ? "active" : "inactive", | |
275 | codec_dai->pop_wait ? "yes" : "no"); | |
db2a4165 FM |
276 | |
277 | /* are we waiting on this codec DAI stream */ | |
278 | if (codec_dai->pop_wait == 1) { | |
279 | ||
0be9898a | 280 | /* Reduce power if no longer active */ |
3c1c47e0 | 281 | if (codec->active == 0) { |
f24368c2 MB |
282 | pr_debug("pop wq D1 %s %s\n", codec->name, |
283 | codec_dai->playback.stream_name); | |
0be9898a MB |
284 | snd_soc_dapm_set_bias_level(socdev, |
285 | SND_SOC_BIAS_PREPARE); | |
3c1c47e0 LG |
286 | } |
287 | ||
db2a4165 | 288 | codec_dai->pop_wait = 0; |
0b4d221b LG |
289 | snd_soc_dapm_stream_event(codec, |
290 | codec_dai->playback.stream_name, | |
db2a4165 FM |
291 | SND_SOC_DAPM_STREAM_STOP); |
292 | ||
0be9898a | 293 | /* Fall into standby if no longer active */ |
db2a4165 | 294 | if (codec->active == 0) { |
f24368c2 MB |
295 | pr_debug("pop wq D3 %s %s\n", codec->name, |
296 | codec_dai->playback.stream_name); | |
0be9898a MB |
297 | snd_soc_dapm_set_bias_level(socdev, |
298 | SND_SOC_BIAS_STANDBY); | |
db2a4165 FM |
299 | } |
300 | } | |
301 | } | |
302 | mutex_unlock(&pcm_mutex); | |
303 | } | |
304 | ||
305 | /* | |
306 | * Called by ALSA when a PCM substream is closed. Private data can be | |
307 | * freed here. The cpu DAI, codec DAI, machine and platform are also | |
308 | * shutdown. | |
309 | */ | |
310 | static int soc_codec_close(struct snd_pcm_substream *substream) | |
311 | { | |
312 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
313 | struct snd_soc_device *socdev = rtd->socdev; | |
6308419a | 314 | struct snd_soc_card *card = socdev->card; |
cb666e5b | 315 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 | 316 | struct snd_soc_platform *platform = card->platform; |
3c4b266f LG |
317 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
318 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
319 | struct snd_soc_codec *codec = socdev->codec; |
320 | ||
321 | mutex_lock(&pcm_mutex); | |
322 | ||
323 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
cb666e5b | 324 | cpu_dai->playback.active = codec_dai->playback.active = 0; |
db2a4165 | 325 | else |
cb666e5b | 326 | cpu_dai->capture.active = codec_dai->capture.active = 0; |
db2a4165 | 327 | |
cb666e5b LG |
328 | if (codec_dai->playback.active == 0 && |
329 | codec_dai->capture.active == 0) { | |
330 | cpu_dai->active = codec_dai->active = 0; | |
db2a4165 FM |
331 | } |
332 | codec->active--; | |
333 | ||
6010b2da MB |
334 | /* Muting the DAC suppresses artifacts caused during digital |
335 | * shutdown, for example from stopping clocks. | |
336 | */ | |
337 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
338 | snd_soc_dai_digital_mute(codec_dai, 1); | |
339 | ||
cb666e5b | 340 | if (cpu_dai->ops.shutdown) |
dee89c4d | 341 | cpu_dai->ops.shutdown(substream, cpu_dai); |
db2a4165 | 342 | |
cb666e5b | 343 | if (codec_dai->ops.shutdown) |
dee89c4d | 344 | codec_dai->ops.shutdown(substream, codec_dai); |
db2a4165 FM |
345 | |
346 | if (machine->ops && machine->ops->shutdown) | |
347 | machine->ops->shutdown(substream); | |
348 | ||
349 | if (platform->pcm_ops->close) | |
350 | platform->pcm_ops->close(substream); | |
cb666e5b | 351 | cpu_dai->runtime = NULL; |
db2a4165 FM |
352 | |
353 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
354 | /* start delayed pop wq here for playback streams */ | |
cb666e5b | 355 | codec_dai->pop_wait = 1; |
6308419a | 356 | schedule_delayed_work(&card->delayed_work, |
db2a4165 FM |
357 | msecs_to_jiffies(pmdown_time)); |
358 | } else { | |
359 | /* capture streams can be powered down now */ | |
cb666e5b | 360 | snd_soc_dapm_stream_event(codec, |
0b4d221b LG |
361 | codec_dai->capture.stream_name, |
362 | SND_SOC_DAPM_STREAM_STOP); | |
db2a4165 | 363 | |
0b4d221b | 364 | if (codec->active == 0 && codec_dai->pop_wait == 0) |
0be9898a MB |
365 | snd_soc_dapm_set_bias_level(socdev, |
366 | SND_SOC_BIAS_STANDBY); | |
db2a4165 FM |
367 | } |
368 | ||
369 | mutex_unlock(&pcm_mutex); | |
370 | return 0; | |
371 | } | |
372 | ||
373 | /* | |
374 | * Called by ALSA when the PCM substream is prepared, can set format, sample | |
375 | * rate, etc. This function is non atomic and can be called multiple times, | |
376 | * it can refer to the runtime info. | |
377 | */ | |
378 | static int soc_pcm_prepare(struct snd_pcm_substream *substream) | |
379 | { | |
380 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
381 | struct snd_soc_device *socdev = rtd->socdev; | |
6308419a | 382 | struct snd_soc_card *card = socdev->card; |
cb666e5b | 383 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 | 384 | struct snd_soc_platform *platform = card->platform; |
3c4b266f LG |
385 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
386 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
387 | struct snd_soc_codec *codec = socdev->codec; |
388 | int ret = 0; | |
389 | ||
390 | mutex_lock(&pcm_mutex); | |
cb666e5b LG |
391 | |
392 | if (machine->ops && machine->ops->prepare) { | |
393 | ret = machine->ops->prepare(substream); | |
394 | if (ret < 0) { | |
395 | printk(KERN_ERR "asoc: machine prepare error\n"); | |
396 | goto out; | |
397 | } | |
398 | } | |
399 | ||
db2a4165 FM |
400 | if (platform->pcm_ops->prepare) { |
401 | ret = platform->pcm_ops->prepare(substream); | |
a71a468a LG |
402 | if (ret < 0) { |
403 | printk(KERN_ERR "asoc: platform prepare error\n"); | |
db2a4165 | 404 | goto out; |
a71a468a | 405 | } |
db2a4165 FM |
406 | } |
407 | ||
cb666e5b | 408 | if (codec_dai->ops.prepare) { |
dee89c4d | 409 | ret = codec_dai->ops.prepare(substream, codec_dai); |
a71a468a LG |
410 | if (ret < 0) { |
411 | printk(KERN_ERR "asoc: codec DAI prepare error\n"); | |
db2a4165 | 412 | goto out; |
a71a468a | 413 | } |
db2a4165 FM |
414 | } |
415 | ||
cb666e5b | 416 | if (cpu_dai->ops.prepare) { |
dee89c4d | 417 | ret = cpu_dai->ops.prepare(substream, cpu_dai); |
cb666e5b LG |
418 | if (ret < 0) { |
419 | printk(KERN_ERR "asoc: cpu DAI prepare error\n"); | |
420 | goto out; | |
421 | } | |
422 | } | |
db2a4165 | 423 | |
d45f6219 MB |
424 | /* cancel any delayed stream shutdown that is pending */ |
425 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
426 | codec_dai->pop_wait) { | |
427 | codec_dai->pop_wait = 0; | |
6308419a | 428 | cancel_delayed_work(&card->delayed_work); |
d45f6219 | 429 | } |
db2a4165 | 430 | |
d45f6219 MB |
431 | /* do we need to power up codec */ |
432 | if (codec->bias_level != SND_SOC_BIAS_ON) { | |
433 | snd_soc_dapm_set_bias_level(socdev, | |
434 | SND_SOC_BIAS_PREPARE); | |
db2a4165 | 435 | |
d45f6219 MB |
436 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
437 | snd_soc_dapm_stream_event(codec, | |
cb666e5b | 438 | codec_dai->playback.stream_name, |
db2a4165 | 439 | SND_SOC_DAPM_STREAM_START); |
d45f6219 MB |
440 | else |
441 | snd_soc_dapm_stream_event(codec, | |
cb666e5b | 442 | codec_dai->capture.stream_name, |
db2a4165 FM |
443 | SND_SOC_DAPM_STREAM_START); |
444 | ||
d45f6219 MB |
445 | snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_ON); |
446 | snd_soc_dai_digital_mute(codec_dai, 0); | |
db2a4165 | 447 | |
d45f6219 MB |
448 | } else { |
449 | /* codec already powered - power on widgets */ | |
450 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
451 | snd_soc_dapm_stream_event(codec, | |
cb666e5b | 452 | codec_dai->playback.stream_name, |
db2a4165 | 453 | SND_SOC_DAPM_STREAM_START); |
d45f6219 MB |
454 | else |
455 | snd_soc_dapm_stream_event(codec, | |
cb666e5b | 456 | codec_dai->capture.stream_name, |
db2a4165 | 457 | SND_SOC_DAPM_STREAM_START); |
8c6529db | 458 | |
d45f6219 | 459 | snd_soc_dai_digital_mute(codec_dai, 0); |
db2a4165 FM |
460 | } |
461 | ||
462 | out: | |
463 | mutex_unlock(&pcm_mutex); | |
464 | return ret; | |
465 | } | |
466 | ||
467 | /* | |
468 | * Called by ALSA when the hardware params are set by application. This | |
469 | * function can also be called multiple times and can allocate buffers | |
470 | * (using snd_pcm_lib_* ). It's non-atomic. | |
471 | */ | |
472 | static int soc_pcm_hw_params(struct snd_pcm_substream *substream, | |
473 | struct snd_pcm_hw_params *params) | |
474 | { | |
475 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
476 | struct snd_soc_device *socdev = rtd->socdev; | |
cb666e5b | 477 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 MB |
478 | struct snd_soc_card *card = socdev->card; |
479 | struct snd_soc_platform *platform = card->platform; | |
3c4b266f LG |
480 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
481 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
482 | int ret = 0; |
483 | ||
484 | mutex_lock(&pcm_mutex); | |
485 | ||
cb666e5b LG |
486 | if (machine->ops && machine->ops->hw_params) { |
487 | ret = machine->ops->hw_params(substream, params); | |
488 | if (ret < 0) { | |
489 | printk(KERN_ERR "asoc: machine hw_params failed\n"); | |
db2a4165 | 490 | goto out; |
cb666e5b | 491 | } |
db2a4165 FM |
492 | } |
493 | ||
cb666e5b | 494 | if (codec_dai->ops.hw_params) { |
dee89c4d | 495 | ret = codec_dai->ops.hw_params(substream, params, codec_dai); |
db2a4165 FM |
496 | if (ret < 0) { |
497 | printk(KERN_ERR "asoc: can't set codec %s hw params\n", | |
cb666e5b LG |
498 | codec_dai->name); |
499 | goto codec_err; | |
db2a4165 FM |
500 | } |
501 | } | |
502 | ||
cb666e5b | 503 | if (cpu_dai->ops.hw_params) { |
dee89c4d | 504 | ret = cpu_dai->ops.hw_params(substream, params, cpu_dai); |
db2a4165 | 505 | if (ret < 0) { |
3ff3f64b | 506 | printk(KERN_ERR "asoc: interface %s hw params failed\n", |
cb666e5b | 507 | cpu_dai->name); |
db2a4165 FM |
508 | goto interface_err; |
509 | } | |
510 | } | |
511 | ||
512 | if (platform->pcm_ops->hw_params) { | |
513 | ret = platform->pcm_ops->hw_params(substream, params); | |
514 | if (ret < 0) { | |
3ff3f64b | 515 | printk(KERN_ERR "asoc: platform %s hw params failed\n", |
db2a4165 FM |
516 | platform->name); |
517 | goto platform_err; | |
518 | } | |
519 | } | |
520 | ||
db2a4165 FM |
521 | out: |
522 | mutex_unlock(&pcm_mutex); | |
523 | return ret; | |
524 | ||
db2a4165 | 525 | platform_err: |
cb666e5b | 526 | if (cpu_dai->ops.hw_free) |
dee89c4d | 527 | cpu_dai->ops.hw_free(substream, cpu_dai); |
db2a4165 FM |
528 | |
529 | interface_err: | |
cb666e5b | 530 | if (codec_dai->ops.hw_free) |
dee89c4d | 531 | codec_dai->ops.hw_free(substream, codec_dai); |
cb666e5b LG |
532 | |
533 | codec_err: | |
3ff3f64b | 534 | if (machine->ops && machine->ops->hw_free) |
cb666e5b | 535 | machine->ops->hw_free(substream); |
db2a4165 FM |
536 | |
537 | mutex_unlock(&pcm_mutex); | |
538 | return ret; | |
539 | } | |
540 | ||
541 | /* | |
542 | * Free's resources allocated by hw_params, can be called multiple times | |
543 | */ | |
544 | static int soc_pcm_hw_free(struct snd_pcm_substream *substream) | |
545 | { | |
546 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
547 | struct snd_soc_device *socdev = rtd->socdev; | |
cb666e5b | 548 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 MB |
549 | struct snd_soc_card *card = socdev->card; |
550 | struct snd_soc_platform *platform = card->platform; | |
3c4b266f LG |
551 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
552 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 | 553 | struct snd_soc_codec *codec = socdev->codec; |
db2a4165 FM |
554 | |
555 | mutex_lock(&pcm_mutex); | |
556 | ||
557 | /* apply codec digital mute */ | |
8c6529db LG |
558 | if (!codec->active) |
559 | snd_soc_dai_digital_mute(codec_dai, 1); | |
db2a4165 FM |
560 | |
561 | /* free any machine hw params */ | |
562 | if (machine->ops && machine->ops->hw_free) | |
563 | machine->ops->hw_free(substream); | |
564 | ||
565 | /* free any DMA resources */ | |
566 | if (platform->pcm_ops->hw_free) | |
567 | platform->pcm_ops->hw_free(substream); | |
568 | ||
569 | /* now free hw params for the DAI's */ | |
cb666e5b | 570 | if (codec_dai->ops.hw_free) |
dee89c4d | 571 | codec_dai->ops.hw_free(substream, codec_dai); |
db2a4165 | 572 | |
cb666e5b | 573 | if (cpu_dai->ops.hw_free) |
dee89c4d | 574 | cpu_dai->ops.hw_free(substream, cpu_dai); |
db2a4165 FM |
575 | |
576 | mutex_unlock(&pcm_mutex); | |
577 | return 0; | |
578 | } | |
579 | ||
580 | static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd) | |
581 | { | |
582 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
583 | struct snd_soc_device *socdev = rtd->socdev; | |
87689d56 | 584 | struct snd_soc_card *card= socdev->card; |
cb666e5b | 585 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 | 586 | struct snd_soc_platform *platform = card->platform; |
3c4b266f LG |
587 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
588 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
589 | int ret; |
590 | ||
cb666e5b | 591 | if (codec_dai->ops.trigger) { |
dee89c4d | 592 | ret = codec_dai->ops.trigger(substream, cmd, codec_dai); |
db2a4165 FM |
593 | if (ret < 0) |
594 | return ret; | |
595 | } | |
596 | ||
597 | if (platform->pcm_ops->trigger) { | |
598 | ret = platform->pcm_ops->trigger(substream, cmd); | |
599 | if (ret < 0) | |
600 | return ret; | |
601 | } | |
602 | ||
cb666e5b | 603 | if (cpu_dai->ops.trigger) { |
dee89c4d | 604 | ret = cpu_dai->ops.trigger(substream, cmd, cpu_dai); |
db2a4165 FM |
605 | if (ret < 0) |
606 | return ret; | |
607 | } | |
608 | return 0; | |
609 | } | |
610 | ||
611 | /* ASoC PCM operations */ | |
612 | static struct snd_pcm_ops soc_pcm_ops = { | |
613 | .open = soc_pcm_open, | |
614 | .close = soc_codec_close, | |
615 | .hw_params = soc_pcm_hw_params, | |
616 | .hw_free = soc_pcm_hw_free, | |
617 | .prepare = soc_pcm_prepare, | |
618 | .trigger = soc_pcm_trigger, | |
619 | }; | |
620 | ||
621 | #ifdef CONFIG_PM | |
622 | /* powers down audio subsystem for suspend */ | |
623 | static int soc_suspend(struct platform_device *pdev, pm_message_t state) | |
624 | { | |
3ff3f64b | 625 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
87506549 | 626 | struct snd_soc_card *card = socdev->card; |
87689d56 | 627 | struct snd_soc_platform *platform = card->platform; |
3ff3f64b | 628 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; |
db2a4165 FM |
629 | struct snd_soc_codec *codec = socdev->codec; |
630 | int i; | |
631 | ||
6ed25978 AG |
632 | /* Due to the resume being scheduled into a workqueue we could |
633 | * suspend before that's finished - wait for it to complete. | |
634 | */ | |
635 | snd_power_lock(codec->card); | |
636 | snd_power_wait(codec->card, SNDRV_CTL_POWER_D0); | |
637 | snd_power_unlock(codec->card); | |
638 | ||
639 | /* we're going to block userspace touching us until resume completes */ | |
640 | snd_power_change_state(codec->card, SNDRV_CTL_POWER_D3hot); | |
641 | ||
db2a4165 | 642 | /* mute any active DAC's */ |
dee89c4d MB |
643 | for (i = 0; i < card->num_links; i++) { |
644 | struct snd_soc_dai *dai = card->dai_link[i].codec_dai; | |
645 | if (dai->ops.digital_mute && dai->playback.active) | |
646 | dai->ops.digital_mute(dai, 1); | |
db2a4165 FM |
647 | } |
648 | ||
4ccab3e7 | 649 | /* suspend all pcms */ |
87506549 MB |
650 | for (i = 0; i < card->num_links; i++) |
651 | snd_pcm_suspend_all(card->dai_link[i].pcm); | |
4ccab3e7 | 652 | |
87506549 MB |
653 | if (card->suspend_pre) |
654 | card->suspend_pre(pdev, state); | |
db2a4165 | 655 | |
87506549 MB |
656 | for (i = 0; i < card->num_links; i++) { |
657 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
3ba9e10a | 658 | if (cpu_dai->suspend && !cpu_dai->ac97_control) |
dc7d7b83 | 659 | cpu_dai->suspend(cpu_dai); |
db2a4165 | 660 | if (platform->suspend) |
07c84d04 | 661 | platform->suspend(cpu_dai); |
db2a4165 FM |
662 | } |
663 | ||
664 | /* close any waiting streams and save state */ | |
6308419a | 665 | run_delayed_work(&card->delayed_work); |
0be9898a | 666 | codec->suspend_bias_level = codec->bias_level; |
db2a4165 | 667 | |
3ff3f64b | 668 | for (i = 0; i < codec->num_dai; i++) { |
db2a4165 FM |
669 | char *stream = codec->dai[i].playback.stream_name; |
670 | if (stream != NULL) | |
671 | snd_soc_dapm_stream_event(codec, stream, | |
672 | SND_SOC_DAPM_STREAM_SUSPEND); | |
673 | stream = codec->dai[i].capture.stream_name; | |
674 | if (stream != NULL) | |
675 | snd_soc_dapm_stream_event(codec, stream, | |
676 | SND_SOC_DAPM_STREAM_SUSPEND); | |
677 | } | |
678 | ||
679 | if (codec_dev->suspend) | |
680 | codec_dev->suspend(pdev, state); | |
681 | ||
87506549 MB |
682 | for (i = 0; i < card->num_links; i++) { |
683 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
3ba9e10a | 684 | if (cpu_dai->suspend && cpu_dai->ac97_control) |
dc7d7b83 | 685 | cpu_dai->suspend(cpu_dai); |
db2a4165 FM |
686 | } |
687 | ||
87506549 MB |
688 | if (card->suspend_post) |
689 | card->suspend_post(pdev, state); | |
db2a4165 FM |
690 | |
691 | return 0; | |
692 | } | |
693 | ||
6ed25978 AG |
694 | /* deferred resume work, so resume can complete before we finished |
695 | * setting our codec back up, which can be very slow on I2C | |
696 | */ | |
697 | static void soc_resume_deferred(struct work_struct *work) | |
db2a4165 | 698 | { |
6308419a MB |
699 | struct snd_soc_card *card = container_of(work, |
700 | struct snd_soc_card, | |
701 | deferred_resume_work); | |
702 | struct snd_soc_device *socdev = card->socdev; | |
87689d56 | 703 | struct snd_soc_platform *platform = card->platform; |
3ff3f64b | 704 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; |
db2a4165 | 705 | struct snd_soc_codec *codec = socdev->codec; |
6ed25978 | 706 | struct platform_device *pdev = to_platform_device(socdev->dev); |
db2a4165 FM |
707 | int i; |
708 | ||
6ed25978 AG |
709 | /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time, |
710 | * so userspace apps are blocked from touching us | |
711 | */ | |
712 | ||
fde22f27 | 713 | dev_dbg(socdev->dev, "starting resume work\n"); |
6ed25978 | 714 | |
87506549 MB |
715 | if (card->resume_pre) |
716 | card->resume_pre(pdev); | |
db2a4165 | 717 | |
87506549 MB |
718 | for (i = 0; i < card->num_links; i++) { |
719 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
3ba9e10a | 720 | if (cpu_dai->resume && cpu_dai->ac97_control) |
dc7d7b83 | 721 | cpu_dai->resume(cpu_dai); |
db2a4165 FM |
722 | } |
723 | ||
724 | if (codec_dev->resume) | |
725 | codec_dev->resume(pdev); | |
726 | ||
3ff3f64b MB |
727 | for (i = 0; i < codec->num_dai; i++) { |
728 | char *stream = codec->dai[i].playback.stream_name; | |
db2a4165 FM |
729 | if (stream != NULL) |
730 | snd_soc_dapm_stream_event(codec, stream, | |
731 | SND_SOC_DAPM_STREAM_RESUME); | |
732 | stream = codec->dai[i].capture.stream_name; | |
733 | if (stream != NULL) | |
734 | snd_soc_dapm_stream_event(codec, stream, | |
735 | SND_SOC_DAPM_STREAM_RESUME); | |
736 | } | |
737 | ||
3ff3f64b | 738 | /* unmute any active DACs */ |
dee89c4d MB |
739 | for (i = 0; i < card->num_links; i++) { |
740 | struct snd_soc_dai *dai = card->dai_link[i].codec_dai; | |
741 | if (dai->ops.digital_mute && dai->playback.active) | |
742 | dai->ops.digital_mute(dai, 0); | |
db2a4165 FM |
743 | } |
744 | ||
87506549 MB |
745 | for (i = 0; i < card->num_links; i++) { |
746 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
3ba9e10a | 747 | if (cpu_dai->resume && !cpu_dai->ac97_control) |
dc7d7b83 | 748 | cpu_dai->resume(cpu_dai); |
db2a4165 | 749 | if (platform->resume) |
07c84d04 | 750 | platform->resume(cpu_dai); |
db2a4165 FM |
751 | } |
752 | ||
87506549 MB |
753 | if (card->resume_post) |
754 | card->resume_post(pdev); | |
db2a4165 | 755 | |
fde22f27 | 756 | dev_dbg(socdev->dev, "resume work completed\n"); |
6ed25978 AG |
757 | |
758 | /* userspace can access us now we are back as we were before */ | |
759 | snd_power_change_state(codec->card, SNDRV_CTL_POWER_D0); | |
760 | } | |
761 | ||
762 | /* powers up audio subsystem after a suspend */ | |
763 | static int soc_resume(struct platform_device *pdev) | |
764 | { | |
765 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
6308419a | 766 | struct snd_soc_card *card = socdev->card; |
6ed25978 | 767 | |
fde22f27 | 768 | dev_dbg(socdev->dev, "scheduling resume work\n"); |
6ed25978 | 769 | |
6308419a | 770 | if (!schedule_work(&card->deferred_resume_work)) |
fde22f27 | 771 | dev_err(socdev->dev, "resume work item may be lost\n"); |
6ed25978 | 772 | |
db2a4165 FM |
773 | return 0; |
774 | } | |
775 | ||
776 | #else | |
777 | #define soc_suspend NULL | |
778 | #define soc_resume NULL | |
779 | #endif | |
780 | ||
781 | /* probes a new socdev */ | |
782 | static int soc_probe(struct platform_device *pdev) | |
783 | { | |
784 | int ret = 0, i; | |
785 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
87506549 | 786 | struct snd_soc_card *card = socdev->card; |
87689d56 | 787 | struct snd_soc_platform *platform = card->platform; |
db2a4165 FM |
788 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; |
789 | ||
6308419a MB |
790 | /* Bodge while we push things out of socdev */ |
791 | card->socdev = socdev; | |
792 | ||
c5af3a2e MB |
793 | /* Bodge while we unpick instantiation */ |
794 | card->dev = &pdev->dev; | |
795 | ret = snd_soc_register_card(card); | |
796 | if (ret != 0) { | |
797 | dev_err(&pdev->dev, "Failed to register card\n"); | |
798 | return ret; | |
799 | } | |
800 | ||
87506549 MB |
801 | if (card->probe) { |
802 | ret = card->probe(pdev); | |
3ff3f64b | 803 | if (ret < 0) |
db2a4165 FM |
804 | return ret; |
805 | } | |
806 | ||
87506549 MB |
807 | for (i = 0; i < card->num_links; i++) { |
808 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
db2a4165 | 809 | if (cpu_dai->probe) { |
bdb92876 | 810 | ret = cpu_dai->probe(pdev, cpu_dai); |
3ff3f64b | 811 | if (ret < 0) |
db2a4165 FM |
812 | goto cpu_dai_err; |
813 | } | |
814 | } | |
815 | ||
816 | if (codec_dev->probe) { | |
817 | ret = codec_dev->probe(pdev); | |
3ff3f64b | 818 | if (ret < 0) |
db2a4165 FM |
819 | goto cpu_dai_err; |
820 | } | |
821 | ||
822 | if (platform->probe) { | |
823 | ret = platform->probe(pdev); | |
3ff3f64b | 824 | if (ret < 0) |
db2a4165 FM |
825 | goto platform_err; |
826 | } | |
827 | ||
828 | /* DAPM stream work */ | |
6308419a | 829 | INIT_DELAYED_WORK(&card->delayed_work, close_delayed_work); |
1301a964 | 830 | #ifdef CONFIG_PM |
6ed25978 | 831 | /* deferred resume work */ |
6308419a | 832 | INIT_WORK(&card->deferred_resume_work, soc_resume_deferred); |
1301a964 | 833 | #endif |
6ed25978 | 834 | |
db2a4165 FM |
835 | return 0; |
836 | ||
db2a4165 FM |
837 | platform_err: |
838 | if (codec_dev->remove) | |
839 | codec_dev->remove(pdev); | |
840 | ||
841 | cpu_dai_err: | |
18b9b3d9 | 842 | for (i--; i >= 0; i--) { |
87506549 | 843 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; |
db2a4165 | 844 | if (cpu_dai->remove) |
bdb92876 | 845 | cpu_dai->remove(pdev, cpu_dai); |
db2a4165 FM |
846 | } |
847 | ||
87506549 MB |
848 | if (card->remove) |
849 | card->remove(pdev); | |
db2a4165 FM |
850 | |
851 | return ret; | |
852 | } | |
853 | ||
854 | /* removes a socdev */ | |
855 | static int soc_remove(struct platform_device *pdev) | |
856 | { | |
857 | int i; | |
858 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
87506549 | 859 | struct snd_soc_card *card = socdev->card; |
87689d56 | 860 | struct snd_soc_platform *platform = card->platform; |
db2a4165 FM |
861 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; |
862 | ||
6308419a | 863 | run_delayed_work(&card->delayed_work); |
965ac42c | 864 | |
db2a4165 FM |
865 | if (platform->remove) |
866 | platform->remove(pdev); | |
867 | ||
868 | if (codec_dev->remove) | |
869 | codec_dev->remove(pdev); | |
870 | ||
87506549 MB |
871 | for (i = 0; i < card->num_links; i++) { |
872 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
db2a4165 | 873 | if (cpu_dai->remove) |
bdb92876 | 874 | cpu_dai->remove(pdev, cpu_dai); |
db2a4165 FM |
875 | } |
876 | ||
87506549 MB |
877 | if (card->remove) |
878 | card->remove(pdev); | |
db2a4165 | 879 | |
c5af3a2e MB |
880 | snd_soc_unregister_card(card); |
881 | ||
db2a4165 FM |
882 | return 0; |
883 | } | |
884 | ||
885 | /* ASoC platform driver */ | |
886 | static struct platform_driver soc_driver = { | |
887 | .driver = { | |
888 | .name = "soc-audio", | |
8b45a209 | 889 | .owner = THIS_MODULE, |
db2a4165 FM |
890 | }, |
891 | .probe = soc_probe, | |
892 | .remove = soc_remove, | |
893 | .suspend = soc_suspend, | |
894 | .resume = soc_resume, | |
895 | }; | |
896 | ||
897 | /* create a new pcm */ | |
898 | static int soc_new_pcm(struct snd_soc_device *socdev, | |
899 | struct snd_soc_dai_link *dai_link, int num) | |
900 | { | |
901 | struct snd_soc_codec *codec = socdev->codec; | |
87689d56 MB |
902 | struct snd_soc_card *card = socdev->card; |
903 | struct snd_soc_platform *platform = card->platform; | |
3c4b266f LG |
904 | struct snd_soc_dai *codec_dai = dai_link->codec_dai; |
905 | struct snd_soc_dai *cpu_dai = dai_link->cpu_dai; | |
db2a4165 FM |
906 | struct snd_soc_pcm_runtime *rtd; |
907 | struct snd_pcm *pcm; | |
908 | char new_name[64]; | |
909 | int ret = 0, playback = 0, capture = 0; | |
910 | ||
911 | rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime), GFP_KERNEL); | |
912 | if (rtd == NULL) | |
913 | return -ENOMEM; | |
cb666e5b LG |
914 | |
915 | rtd->dai = dai_link; | |
db2a4165 | 916 | rtd->socdev = socdev; |
cb666e5b | 917 | codec_dai->codec = socdev->codec; |
db2a4165 FM |
918 | |
919 | /* check client and interface hw capabilities */ | |
3ba9e10a MB |
920 | sprintf(new_name, "%s %s-%d", dai_link->stream_name, codec_dai->name, |
921 | num); | |
db2a4165 FM |
922 | |
923 | if (codec_dai->playback.channels_min) | |
924 | playback = 1; | |
925 | if (codec_dai->capture.channels_min) | |
926 | capture = 1; | |
927 | ||
928 | ret = snd_pcm_new(codec->card, new_name, codec->pcm_devs++, playback, | |
929 | capture, &pcm); | |
930 | if (ret < 0) { | |
3ff3f64b MB |
931 | printk(KERN_ERR "asoc: can't create pcm for codec %s\n", |
932 | codec->name); | |
db2a4165 FM |
933 | kfree(rtd); |
934 | return ret; | |
935 | } | |
936 | ||
4ccab3e7 | 937 | dai_link->pcm = pcm; |
db2a4165 | 938 | pcm->private_data = rtd; |
87689d56 MB |
939 | soc_pcm_ops.mmap = platform->pcm_ops->mmap; |
940 | soc_pcm_ops.pointer = platform->pcm_ops->pointer; | |
941 | soc_pcm_ops.ioctl = platform->pcm_ops->ioctl; | |
942 | soc_pcm_ops.copy = platform->pcm_ops->copy; | |
943 | soc_pcm_ops.silence = platform->pcm_ops->silence; | |
944 | soc_pcm_ops.ack = platform->pcm_ops->ack; | |
945 | soc_pcm_ops.page = platform->pcm_ops->page; | |
db2a4165 FM |
946 | |
947 | if (playback) | |
948 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &soc_pcm_ops); | |
949 | ||
950 | if (capture) | |
951 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &soc_pcm_ops); | |
952 | ||
87689d56 | 953 | ret = platform->pcm_new(codec->card, codec_dai, pcm); |
db2a4165 FM |
954 | if (ret < 0) { |
955 | printk(KERN_ERR "asoc: platform pcm constructor failed\n"); | |
956 | kfree(rtd); | |
957 | return ret; | |
958 | } | |
959 | ||
87689d56 | 960 | pcm->private_free = platform->pcm_free; |
db2a4165 FM |
961 | printk(KERN_INFO "asoc: %s <-> %s mapping ok\n", codec_dai->name, |
962 | cpu_dai->name); | |
963 | return ret; | |
964 | } | |
965 | ||
966 | /* codec register dump */ | |
12ef193d | 967 | static ssize_t soc_codec_reg_show(struct snd_soc_device *devdata, char *buf) |
db2a4165 | 968 | { |
db2a4165 FM |
969 | struct snd_soc_codec *codec = devdata->codec; |
970 | int i, step = 1, count = 0; | |
971 | ||
972 | if (!codec->reg_cache_size) | |
973 | return 0; | |
974 | ||
975 | if (codec->reg_cache_step) | |
976 | step = codec->reg_cache_step; | |
977 | ||
978 | count += sprintf(buf, "%s registers\n", codec->name); | |
58cd33c0 MB |
979 | for (i = 0; i < codec->reg_cache_size; i += step) { |
980 | count += sprintf(buf + count, "%2x: ", i); | |
981 | if (count >= PAGE_SIZE - 1) | |
982 | break; | |
983 | ||
984 | if (codec->display_register) | |
985 | count += codec->display_register(codec, buf + count, | |
986 | PAGE_SIZE - count, i); | |
987 | else | |
988 | count += snprintf(buf + count, PAGE_SIZE - count, | |
989 | "%4x", codec->read(codec, i)); | |
990 | ||
991 | if (count >= PAGE_SIZE - 1) | |
992 | break; | |
993 | ||
994 | count += snprintf(buf + count, PAGE_SIZE - count, "\n"); | |
995 | if (count >= PAGE_SIZE - 1) | |
996 | break; | |
997 | } | |
998 | ||
999 | /* Truncate count; min() would cause a warning */ | |
1000 | if (count >= PAGE_SIZE) | |
1001 | count = PAGE_SIZE - 1; | |
db2a4165 FM |
1002 | |
1003 | return count; | |
1004 | } | |
12ef193d TK |
1005 | static ssize_t codec_reg_show(struct device *dev, |
1006 | struct device_attribute *attr, char *buf) | |
1007 | { | |
1008 | struct snd_soc_device *devdata = dev_get_drvdata(dev); | |
1009 | return soc_codec_reg_show(devdata, buf); | |
1010 | } | |
1011 | ||
db2a4165 FM |
1012 | static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL); |
1013 | ||
12ef193d TK |
1014 | #ifdef CONFIG_DEBUG_FS |
1015 | static int codec_reg_open_file(struct inode *inode, struct file *file) | |
1016 | { | |
1017 | file->private_data = inode->i_private; | |
1018 | return 0; | |
1019 | } | |
1020 | ||
1021 | static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf, | |
1022 | size_t count, loff_t *ppos) | |
1023 | { | |
1024 | ssize_t ret; | |
384c89e2 MB |
1025 | struct snd_soc_codec *codec = file->private_data; |
1026 | struct device *card_dev = codec->card->dev; | |
1027 | struct snd_soc_device *devdata = card_dev->driver_data; | |
12ef193d TK |
1028 | char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL); |
1029 | if (!buf) | |
1030 | return -ENOMEM; | |
1031 | ret = soc_codec_reg_show(devdata, buf); | |
1032 | if (ret >= 0) | |
1033 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); | |
1034 | kfree(buf); | |
1035 | return ret; | |
1036 | } | |
1037 | ||
1038 | static ssize_t codec_reg_write_file(struct file *file, | |
1039 | const char __user *user_buf, size_t count, loff_t *ppos) | |
1040 | { | |
1041 | char buf[32]; | |
1042 | int buf_size; | |
1043 | char *start = buf; | |
1044 | unsigned long reg, value; | |
1045 | int step = 1; | |
384c89e2 | 1046 | struct snd_soc_codec *codec = file->private_data; |
12ef193d TK |
1047 | |
1048 | buf_size = min(count, (sizeof(buf)-1)); | |
1049 | if (copy_from_user(buf, user_buf, buf_size)) | |
1050 | return -EFAULT; | |
1051 | buf[buf_size] = 0; | |
1052 | ||
1053 | if (codec->reg_cache_step) | |
1054 | step = codec->reg_cache_step; | |
1055 | ||
1056 | while (*start == ' ') | |
1057 | start++; | |
1058 | reg = simple_strtoul(start, &start, 16); | |
1059 | if ((reg >= codec->reg_cache_size) || (reg % step)) | |
1060 | return -EINVAL; | |
1061 | while (*start == ' ') | |
1062 | start++; | |
1063 | if (strict_strtoul(start, 16, &value)) | |
1064 | return -EINVAL; | |
1065 | codec->write(codec, reg, value); | |
1066 | return buf_size; | |
1067 | } | |
1068 | ||
1069 | static const struct file_operations codec_reg_fops = { | |
1070 | .open = codec_reg_open_file, | |
1071 | .read = codec_reg_read_file, | |
1072 | .write = codec_reg_write_file, | |
1073 | }; | |
1074 | ||
384c89e2 | 1075 | static void soc_init_codec_debugfs(struct snd_soc_codec *codec) |
12ef193d | 1076 | { |
384c89e2 MB |
1077 | codec->debugfs_reg = debugfs_create_file("codec_reg", 0644, |
1078 | debugfs_root, codec, | |
1079 | &codec_reg_fops); | |
1080 | if (!codec->debugfs_reg) | |
1081 | printk(KERN_WARNING | |
1082 | "ASoC: Failed to create codec register debugfs file\n"); | |
1083 | ||
1084 | codec->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0744, | |
1085 | debugfs_root, | |
1086 | &codec->pop_time); | |
1087 | if (!codec->debugfs_pop_time) | |
1088 | printk(KERN_WARNING | |
1089 | "Failed to create pop time debugfs file\n"); | |
12ef193d TK |
1090 | } |
1091 | ||
384c89e2 | 1092 | static void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec) |
12ef193d | 1093 | { |
384c89e2 MB |
1094 | debugfs_remove(codec->debugfs_pop_time); |
1095 | debugfs_remove(codec->debugfs_reg); | |
12ef193d TK |
1096 | } |
1097 | ||
1098 | #else | |
1099 | ||
384c89e2 | 1100 | static inline void soc_init_codec_debugfs(struct snd_soc_codec *codec) |
12ef193d TK |
1101 | { |
1102 | } | |
1103 | ||
384c89e2 | 1104 | static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec) |
12ef193d TK |
1105 | { |
1106 | } | |
1107 | #endif | |
1108 | ||
db2a4165 FM |
1109 | /** |
1110 | * snd_soc_new_ac97_codec - initailise AC97 device | |
1111 | * @codec: audio codec | |
1112 | * @ops: AC97 bus operations | |
1113 | * @num: AC97 codec number | |
1114 | * | |
1115 | * Initialises AC97 codec resources for use by ad-hoc devices only. | |
1116 | */ | |
1117 | int snd_soc_new_ac97_codec(struct snd_soc_codec *codec, | |
1118 | struct snd_ac97_bus_ops *ops, int num) | |
1119 | { | |
1120 | mutex_lock(&codec->mutex); | |
1121 | ||
1122 | codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL); | |
1123 | if (codec->ac97 == NULL) { | |
1124 | mutex_unlock(&codec->mutex); | |
1125 | return -ENOMEM; | |
1126 | } | |
1127 | ||
1128 | codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL); | |
1129 | if (codec->ac97->bus == NULL) { | |
1130 | kfree(codec->ac97); | |
1131 | codec->ac97 = NULL; | |
1132 | mutex_unlock(&codec->mutex); | |
1133 | return -ENOMEM; | |
1134 | } | |
1135 | ||
1136 | codec->ac97->bus->ops = ops; | |
1137 | codec->ac97->num = num; | |
1138 | mutex_unlock(&codec->mutex); | |
1139 | return 0; | |
1140 | } | |
1141 | EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec); | |
1142 | ||
1143 | /** | |
1144 | * snd_soc_free_ac97_codec - free AC97 codec device | |
1145 | * @codec: audio codec | |
1146 | * | |
1147 | * Frees AC97 codec device resources. | |
1148 | */ | |
1149 | void snd_soc_free_ac97_codec(struct snd_soc_codec *codec) | |
1150 | { | |
1151 | mutex_lock(&codec->mutex); | |
1152 | kfree(codec->ac97->bus); | |
1153 | kfree(codec->ac97); | |
1154 | codec->ac97 = NULL; | |
1155 | mutex_unlock(&codec->mutex); | |
1156 | } | |
1157 | EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec); | |
1158 | ||
1159 | /** | |
1160 | * snd_soc_update_bits - update codec register bits | |
1161 | * @codec: audio codec | |
1162 | * @reg: codec register | |
1163 | * @mask: register mask | |
1164 | * @value: new value | |
1165 | * | |
1166 | * Writes new register value. | |
1167 | * | |
1168 | * Returns 1 for change else 0. | |
1169 | */ | |
1170 | int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg, | |
1171 | unsigned short mask, unsigned short value) | |
1172 | { | |
1173 | int change; | |
1174 | unsigned short old, new; | |
1175 | ||
1176 | mutex_lock(&io_mutex); | |
1177 | old = snd_soc_read(codec, reg); | |
1178 | new = (old & ~mask) | value; | |
1179 | change = old != new; | |
1180 | if (change) | |
1181 | snd_soc_write(codec, reg, new); | |
1182 | ||
1183 | mutex_unlock(&io_mutex); | |
1184 | return change; | |
1185 | } | |
1186 | EXPORT_SYMBOL_GPL(snd_soc_update_bits); | |
1187 | ||
1188 | /** | |
1189 | * snd_soc_test_bits - test register for change | |
1190 | * @codec: audio codec | |
1191 | * @reg: codec register | |
1192 | * @mask: register mask | |
1193 | * @value: new value | |
1194 | * | |
1195 | * Tests a register with a new value and checks if the new value is | |
1196 | * different from the old value. | |
1197 | * | |
1198 | * Returns 1 for change else 0. | |
1199 | */ | |
1200 | int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg, | |
1201 | unsigned short mask, unsigned short value) | |
1202 | { | |
1203 | int change; | |
1204 | unsigned short old, new; | |
1205 | ||
1206 | mutex_lock(&io_mutex); | |
1207 | old = snd_soc_read(codec, reg); | |
1208 | new = (old & ~mask) | value; | |
1209 | change = old != new; | |
1210 | mutex_unlock(&io_mutex); | |
1211 | ||
1212 | return change; | |
1213 | } | |
1214 | EXPORT_SYMBOL_GPL(snd_soc_test_bits); | |
1215 | ||
db2a4165 FM |
1216 | /** |
1217 | * snd_soc_new_pcms - create new sound card and pcms | |
1218 | * @socdev: the SoC audio device | |
1219 | * | |
1220 | * Create a new sound card based upon the codec and interface pcms. | |
1221 | * | |
1222 | * Returns 0 for success, else error. | |
1223 | */ | |
bc7320c5 | 1224 | int snd_soc_new_pcms(struct snd_soc_device *socdev, int idx, const char *xid) |
db2a4165 FM |
1225 | { |
1226 | struct snd_soc_codec *codec = socdev->codec; | |
87506549 | 1227 | struct snd_soc_card *card = socdev->card; |
db2a4165 FM |
1228 | int ret = 0, i; |
1229 | ||
1230 | mutex_lock(&codec->mutex); | |
1231 | ||
1232 | /* register a sound card */ | |
1233 | codec->card = snd_card_new(idx, xid, codec->owner, 0); | |
1234 | if (!codec->card) { | |
1235 | printk(KERN_ERR "asoc: can't create sound card for codec %s\n", | |
1236 | codec->name); | |
1237 | mutex_unlock(&codec->mutex); | |
1238 | return -ENODEV; | |
1239 | } | |
1240 | ||
1241 | codec->card->dev = socdev->dev; | |
1242 | codec->card->private_data = codec; | |
1243 | strncpy(codec->card->driver, codec->name, sizeof(codec->card->driver)); | |
1244 | ||
1245 | /* create the pcms */ | |
87506549 MB |
1246 | for (i = 0; i < card->num_links; i++) { |
1247 | ret = soc_new_pcm(socdev, &card->dai_link[i], i); | |
db2a4165 FM |
1248 | if (ret < 0) { |
1249 | printk(KERN_ERR "asoc: can't create pcm %s\n", | |
87506549 | 1250 | card->dai_link[i].stream_name); |
db2a4165 FM |
1251 | mutex_unlock(&codec->mutex); |
1252 | return ret; | |
1253 | } | |
1254 | } | |
1255 | ||
1256 | mutex_unlock(&codec->mutex); | |
1257 | return ret; | |
1258 | } | |
1259 | EXPORT_SYMBOL_GPL(snd_soc_new_pcms); | |
1260 | ||
1261 | /** | |
968a6025 | 1262 | * snd_soc_init_card - register sound card |
db2a4165 FM |
1263 | * @socdev: the SoC audio device |
1264 | * | |
1265 | * Register a SoC sound card. Also registers an AC97 device if the | |
1266 | * codec is AC97 for ad hoc devices. | |
1267 | * | |
1268 | * Returns 0 for success, else error. | |
1269 | */ | |
968a6025 | 1270 | int snd_soc_init_card(struct snd_soc_device *socdev) |
db2a4165 FM |
1271 | { |
1272 | struct snd_soc_codec *codec = socdev->codec; | |
87506549 | 1273 | struct snd_soc_card *card = socdev->card; |
12e74f7d | 1274 | int ret = 0, i, ac97 = 0, err = 0; |
db2a4165 | 1275 | |
87506549 MB |
1276 | for (i = 0; i < card->num_links; i++) { |
1277 | if (card->dai_link[i].init) { | |
1278 | err = card->dai_link[i].init(codec); | |
12e74f7d LG |
1279 | if (err < 0) { |
1280 | printk(KERN_ERR "asoc: failed to init %s\n", | |
87506549 | 1281 | card->dai_link[i].stream_name); |
12e74f7d LG |
1282 | continue; |
1283 | } | |
1284 | } | |
3ba9e10a | 1285 | if (card->dai_link[i].codec_dai->ac97_control) |
db2a4165 FM |
1286 | ac97 = 1; |
1287 | } | |
1288 | snprintf(codec->card->shortname, sizeof(codec->card->shortname), | |
87506549 | 1289 | "%s", card->name); |
db2a4165 | 1290 | snprintf(codec->card->longname, sizeof(codec->card->longname), |
87506549 | 1291 | "%s (%s)", card->name, codec->name); |
db2a4165 FM |
1292 | |
1293 | ret = snd_card_register(codec->card); | |
1294 | if (ret < 0) { | |
3ff3f64b | 1295 | printk(KERN_ERR "asoc: failed to register soundcard for %s\n", |
db2a4165 | 1296 | codec->name); |
12e74f7d | 1297 | goto out; |
db2a4165 FM |
1298 | } |
1299 | ||
08c8efe6 | 1300 | mutex_lock(&codec->mutex); |
db2a4165 | 1301 | #ifdef CONFIG_SND_SOC_AC97_BUS |
12e74f7d LG |
1302 | if (ac97) { |
1303 | ret = soc_ac97_dev_register(codec); | |
1304 | if (ret < 0) { | |
1305 | printk(KERN_ERR "asoc: AC97 device register failed\n"); | |
1306 | snd_card_free(codec->card); | |
08c8efe6 | 1307 | mutex_unlock(&codec->mutex); |
12e74f7d LG |
1308 | goto out; |
1309 | } | |
1310 | } | |
db2a4165 FM |
1311 | #endif |
1312 | ||
12e74f7d LG |
1313 | err = snd_soc_dapm_sys_add(socdev->dev); |
1314 | if (err < 0) | |
1315 | printk(KERN_WARNING "asoc: failed to add dapm sysfs entries\n"); | |
1316 | ||
1317 | err = device_create_file(socdev->dev, &dev_attr_codec_reg); | |
1318 | if (err < 0) | |
3ff3f64b | 1319 | printk(KERN_WARNING "asoc: failed to add codec sysfs files\n"); |
08c8efe6 | 1320 | |
384c89e2 | 1321 | soc_init_codec_debugfs(socdev->codec); |
db2a4165 | 1322 | mutex_unlock(&codec->mutex); |
08c8efe6 MB |
1323 | |
1324 | out: | |
db2a4165 FM |
1325 | return ret; |
1326 | } | |
968a6025 | 1327 | EXPORT_SYMBOL_GPL(snd_soc_init_card); |
db2a4165 FM |
1328 | |
1329 | /** | |
1330 | * snd_soc_free_pcms - free sound card and pcms | |
1331 | * @socdev: the SoC audio device | |
1332 | * | |
1333 | * Frees sound card and pcms associated with the socdev. | |
1334 | * Also unregister the codec if it is an AC97 device. | |
1335 | */ | |
1336 | void snd_soc_free_pcms(struct snd_soc_device *socdev) | |
1337 | { | |
1338 | struct snd_soc_codec *codec = socdev->codec; | |
a68660e0 | 1339 | #ifdef CONFIG_SND_SOC_AC97_BUS |
3c4b266f | 1340 | struct snd_soc_dai *codec_dai; |
a68660e0 LG |
1341 | int i; |
1342 | #endif | |
db2a4165 FM |
1343 | |
1344 | mutex_lock(&codec->mutex); | |
384c89e2 | 1345 | soc_cleanup_codec_debugfs(socdev->codec); |
db2a4165 | 1346 | #ifdef CONFIG_SND_SOC_AC97_BUS |
3ff3f64b | 1347 | for (i = 0; i < codec->num_dai; i++) { |
a68660e0 | 1348 | codec_dai = &codec->dai[i]; |
3ba9e10a | 1349 | if (codec_dai->ac97_control && codec->ac97) { |
a68660e0 LG |
1350 | soc_ac97_dev_unregister(codec); |
1351 | goto free_card; | |
1352 | } | |
1353 | } | |
1354 | free_card: | |
db2a4165 FM |
1355 | #endif |
1356 | ||
1357 | if (codec->card) | |
1358 | snd_card_free(codec->card); | |
1359 | device_remove_file(socdev->dev, &dev_attr_codec_reg); | |
1360 | mutex_unlock(&codec->mutex); | |
1361 | } | |
1362 | EXPORT_SYMBOL_GPL(snd_soc_free_pcms); | |
1363 | ||
1364 | /** | |
1365 | * snd_soc_set_runtime_hwparams - set the runtime hardware parameters | |
1366 | * @substream: the pcm substream | |
1367 | * @hw: the hardware parameters | |
1368 | * | |
1369 | * Sets the substream runtime hardware parameters. | |
1370 | */ | |
1371 | int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream, | |
1372 | const struct snd_pcm_hardware *hw) | |
1373 | { | |
1374 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1375 | runtime->hw.info = hw->info; | |
1376 | runtime->hw.formats = hw->formats; | |
1377 | runtime->hw.period_bytes_min = hw->period_bytes_min; | |
1378 | runtime->hw.period_bytes_max = hw->period_bytes_max; | |
1379 | runtime->hw.periods_min = hw->periods_min; | |
1380 | runtime->hw.periods_max = hw->periods_max; | |
1381 | runtime->hw.buffer_bytes_max = hw->buffer_bytes_max; | |
1382 | runtime->hw.fifo_size = hw->fifo_size; | |
1383 | return 0; | |
1384 | } | |
1385 | EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams); | |
1386 | ||
1387 | /** | |
1388 | * snd_soc_cnew - create new control | |
1389 | * @_template: control template | |
1390 | * @data: control private data | |
1391 | * @lnng_name: control long name | |
1392 | * | |
1393 | * Create a new mixer control from a template control. | |
1394 | * | |
1395 | * Returns 0 for success, else error. | |
1396 | */ | |
1397 | struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template, | |
1398 | void *data, char *long_name) | |
1399 | { | |
1400 | struct snd_kcontrol_new template; | |
1401 | ||
1402 | memcpy(&template, _template, sizeof(template)); | |
1403 | if (long_name) | |
1404 | template.name = long_name; | |
db2a4165 FM |
1405 | template.index = 0; |
1406 | ||
1407 | return snd_ctl_new1(&template, data); | |
1408 | } | |
1409 | EXPORT_SYMBOL_GPL(snd_soc_cnew); | |
1410 | ||
1411 | /** | |
1412 | * snd_soc_info_enum_double - enumerated double mixer info callback | |
1413 | * @kcontrol: mixer control | |
1414 | * @uinfo: control element information | |
1415 | * | |
1416 | * Callback to provide information about a double enumerated | |
1417 | * mixer control. | |
1418 | * | |
1419 | * Returns 0 for success. | |
1420 | */ | |
1421 | int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol, | |
1422 | struct snd_ctl_elem_info *uinfo) | |
1423 | { | |
1424 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1425 | ||
1426 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; | |
1427 | uinfo->count = e->shift_l == e->shift_r ? 1 : 2; | |
f8ba0b7b | 1428 | uinfo->value.enumerated.items = e->max; |
db2a4165 | 1429 | |
f8ba0b7b JS |
1430 | if (uinfo->value.enumerated.item > e->max - 1) |
1431 | uinfo->value.enumerated.item = e->max - 1; | |
db2a4165 FM |
1432 | strcpy(uinfo->value.enumerated.name, |
1433 | e->texts[uinfo->value.enumerated.item]); | |
1434 | return 0; | |
1435 | } | |
1436 | EXPORT_SYMBOL_GPL(snd_soc_info_enum_double); | |
1437 | ||
1438 | /** | |
1439 | * snd_soc_get_enum_double - enumerated double mixer get callback | |
1440 | * @kcontrol: mixer control | |
1441 | * @uinfo: control element information | |
1442 | * | |
1443 | * Callback to get the value of a double enumerated mixer. | |
1444 | * | |
1445 | * Returns 0 for success. | |
1446 | */ | |
1447 | int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol, | |
1448 | struct snd_ctl_elem_value *ucontrol) | |
1449 | { | |
1450 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1451 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1452 | unsigned short val, bitmask; | |
1453 | ||
f8ba0b7b | 1454 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
db2a4165 FM |
1455 | ; |
1456 | val = snd_soc_read(codec, e->reg); | |
3ff3f64b MB |
1457 | ucontrol->value.enumerated.item[0] |
1458 | = (val >> e->shift_l) & (bitmask - 1); | |
db2a4165 FM |
1459 | if (e->shift_l != e->shift_r) |
1460 | ucontrol->value.enumerated.item[1] = | |
1461 | (val >> e->shift_r) & (bitmask - 1); | |
1462 | ||
1463 | return 0; | |
1464 | } | |
1465 | EXPORT_SYMBOL_GPL(snd_soc_get_enum_double); | |
1466 | ||
1467 | /** | |
1468 | * snd_soc_put_enum_double - enumerated double mixer put callback | |
1469 | * @kcontrol: mixer control | |
1470 | * @uinfo: control element information | |
1471 | * | |
1472 | * Callback to set the value of a double enumerated mixer. | |
1473 | * | |
1474 | * Returns 0 for success. | |
1475 | */ | |
1476 | int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol, | |
1477 | struct snd_ctl_elem_value *ucontrol) | |
1478 | { | |
1479 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1480 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1481 | unsigned short val; | |
1482 | unsigned short mask, bitmask; | |
1483 | ||
f8ba0b7b | 1484 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
db2a4165 | 1485 | ; |
f8ba0b7b | 1486 | if (ucontrol->value.enumerated.item[0] > e->max - 1) |
db2a4165 FM |
1487 | return -EINVAL; |
1488 | val = ucontrol->value.enumerated.item[0] << e->shift_l; | |
1489 | mask = (bitmask - 1) << e->shift_l; | |
1490 | if (e->shift_l != e->shift_r) { | |
f8ba0b7b | 1491 | if (ucontrol->value.enumerated.item[1] > e->max - 1) |
db2a4165 FM |
1492 | return -EINVAL; |
1493 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
1494 | mask |= (bitmask - 1) << e->shift_r; | |
1495 | } | |
1496 | ||
1497 | return snd_soc_update_bits(codec, e->reg, mask, val); | |
1498 | } | |
1499 | EXPORT_SYMBOL_GPL(snd_soc_put_enum_double); | |
1500 | ||
1501 | /** | |
1502 | * snd_soc_info_enum_ext - external enumerated single mixer info callback | |
1503 | * @kcontrol: mixer control | |
1504 | * @uinfo: control element information | |
1505 | * | |
1506 | * Callback to provide information about an external enumerated | |
1507 | * single mixer. | |
1508 | * | |
1509 | * Returns 0 for success. | |
1510 | */ | |
1511 | int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol, | |
1512 | struct snd_ctl_elem_info *uinfo) | |
1513 | { | |
1514 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1515 | ||
1516 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; | |
1517 | uinfo->count = 1; | |
f8ba0b7b | 1518 | uinfo->value.enumerated.items = e->max; |
db2a4165 | 1519 | |
f8ba0b7b JS |
1520 | if (uinfo->value.enumerated.item > e->max - 1) |
1521 | uinfo->value.enumerated.item = e->max - 1; | |
db2a4165 FM |
1522 | strcpy(uinfo->value.enumerated.name, |
1523 | e->texts[uinfo->value.enumerated.item]); | |
1524 | return 0; | |
1525 | } | |
1526 | EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext); | |
1527 | ||
1528 | /** | |
1529 | * snd_soc_info_volsw_ext - external single mixer info callback | |
1530 | * @kcontrol: mixer control | |
1531 | * @uinfo: control element information | |
1532 | * | |
1533 | * Callback to provide information about a single external mixer control. | |
1534 | * | |
1535 | * Returns 0 for success. | |
1536 | */ | |
1537 | int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol, | |
1538 | struct snd_ctl_elem_info *uinfo) | |
1539 | { | |
a7a4ac86 PZ |
1540 | int max = kcontrol->private_value; |
1541 | ||
1542 | if (max == 1) | |
1543 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1544 | else | |
1545 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
db2a4165 | 1546 | |
db2a4165 FM |
1547 | uinfo->count = 1; |
1548 | uinfo->value.integer.min = 0; | |
a7a4ac86 | 1549 | uinfo->value.integer.max = max; |
db2a4165 FM |
1550 | return 0; |
1551 | } | |
1552 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext); | |
1553 | ||
db2a4165 FM |
1554 | /** |
1555 | * snd_soc_info_volsw - single mixer info callback | |
1556 | * @kcontrol: mixer control | |
1557 | * @uinfo: control element information | |
1558 | * | |
1559 | * Callback to provide information about a single mixer control. | |
1560 | * | |
1561 | * Returns 0 for success. | |
1562 | */ | |
1563 | int snd_soc_info_volsw(struct snd_kcontrol *kcontrol, | |
1564 | struct snd_ctl_elem_info *uinfo) | |
1565 | { | |
4eaa9819 JS |
1566 | struct soc_mixer_control *mc = |
1567 | (struct soc_mixer_control *)kcontrol->private_value; | |
1568 | int max = mc->max; | |
762b8df7 | 1569 | unsigned int shift = mc->shift; |
815ecf8d | 1570 | unsigned int rshift = mc->rshift; |
db2a4165 | 1571 | |
a7a4ac86 PZ |
1572 | if (max == 1) |
1573 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1574 | else | |
1575 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
1576 | ||
db2a4165 FM |
1577 | uinfo->count = shift == rshift ? 1 : 2; |
1578 | uinfo->value.integer.min = 0; | |
a7a4ac86 | 1579 | uinfo->value.integer.max = max; |
db2a4165 FM |
1580 | return 0; |
1581 | } | |
1582 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw); | |
1583 | ||
1584 | /** | |
1585 | * snd_soc_get_volsw - single mixer get callback | |
1586 | * @kcontrol: mixer control | |
1587 | * @uinfo: control element information | |
1588 | * | |
1589 | * Callback to get the value of a single mixer control. | |
1590 | * | |
1591 | * Returns 0 for success. | |
1592 | */ | |
1593 | int snd_soc_get_volsw(struct snd_kcontrol *kcontrol, | |
1594 | struct snd_ctl_elem_value *ucontrol) | |
1595 | { | |
4eaa9819 JS |
1596 | struct soc_mixer_control *mc = |
1597 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 1598 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
1599 | unsigned int reg = mc->reg; |
1600 | unsigned int shift = mc->shift; | |
1601 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1602 | int max = mc->max; |
815ecf8d JS |
1603 | unsigned int mask = (1 << fls(max)) - 1; |
1604 | unsigned int invert = mc->invert; | |
db2a4165 FM |
1605 | |
1606 | ucontrol->value.integer.value[0] = | |
1607 | (snd_soc_read(codec, reg) >> shift) & mask; | |
1608 | if (shift != rshift) | |
1609 | ucontrol->value.integer.value[1] = | |
1610 | (snd_soc_read(codec, reg) >> rshift) & mask; | |
1611 | if (invert) { | |
1612 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1613 | max - ucontrol->value.integer.value[0]; |
db2a4165 FM |
1614 | if (shift != rshift) |
1615 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 1616 | max - ucontrol->value.integer.value[1]; |
db2a4165 FM |
1617 | } |
1618 | ||
1619 | return 0; | |
1620 | } | |
1621 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw); | |
1622 | ||
1623 | /** | |
1624 | * snd_soc_put_volsw - single mixer put callback | |
1625 | * @kcontrol: mixer control | |
1626 | * @uinfo: control element information | |
1627 | * | |
1628 | * Callback to set the value of a single mixer control. | |
1629 | * | |
1630 | * Returns 0 for success. | |
1631 | */ | |
1632 | int snd_soc_put_volsw(struct snd_kcontrol *kcontrol, | |
1633 | struct snd_ctl_elem_value *ucontrol) | |
1634 | { | |
4eaa9819 JS |
1635 | struct soc_mixer_control *mc = |
1636 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 1637 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
1638 | unsigned int reg = mc->reg; |
1639 | unsigned int shift = mc->shift; | |
1640 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1641 | int max = mc->max; |
815ecf8d JS |
1642 | unsigned int mask = (1 << fls(max)) - 1; |
1643 | unsigned int invert = mc->invert; | |
db2a4165 FM |
1644 | unsigned short val, val2, val_mask; |
1645 | ||
1646 | val = (ucontrol->value.integer.value[0] & mask); | |
1647 | if (invert) | |
a7a4ac86 | 1648 | val = max - val; |
db2a4165 FM |
1649 | val_mask = mask << shift; |
1650 | val = val << shift; | |
1651 | if (shift != rshift) { | |
1652 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1653 | if (invert) | |
a7a4ac86 | 1654 | val2 = max - val2; |
db2a4165 FM |
1655 | val_mask |= mask << rshift; |
1656 | val |= val2 << rshift; | |
1657 | } | |
a7a4ac86 | 1658 | return snd_soc_update_bits(codec, reg, val_mask, val); |
db2a4165 FM |
1659 | } |
1660 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw); | |
1661 | ||
1662 | /** | |
1663 | * snd_soc_info_volsw_2r - double mixer info callback | |
1664 | * @kcontrol: mixer control | |
1665 | * @uinfo: control element information | |
1666 | * | |
1667 | * Callback to provide information about a double mixer control that | |
1668 | * spans 2 codec registers. | |
1669 | * | |
1670 | * Returns 0 for success. | |
1671 | */ | |
1672 | int snd_soc_info_volsw_2r(struct snd_kcontrol *kcontrol, | |
1673 | struct snd_ctl_elem_info *uinfo) | |
1674 | { | |
4eaa9819 JS |
1675 | struct soc_mixer_control *mc = |
1676 | (struct soc_mixer_control *)kcontrol->private_value; | |
1677 | int max = mc->max; | |
a7a4ac86 PZ |
1678 | |
1679 | if (max == 1) | |
1680 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1681 | else | |
1682 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
db2a4165 | 1683 | |
db2a4165 FM |
1684 | uinfo->count = 2; |
1685 | uinfo->value.integer.min = 0; | |
a7a4ac86 | 1686 | uinfo->value.integer.max = max; |
db2a4165 FM |
1687 | return 0; |
1688 | } | |
1689 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r); | |
1690 | ||
1691 | /** | |
1692 | * snd_soc_get_volsw_2r - double mixer get callback | |
1693 | * @kcontrol: mixer control | |
1694 | * @uinfo: control element information | |
1695 | * | |
1696 | * Callback to get the value of a double mixer control that spans 2 registers. | |
1697 | * | |
1698 | * Returns 0 for success. | |
1699 | */ | |
1700 | int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol, | |
1701 | struct snd_ctl_elem_value *ucontrol) | |
1702 | { | |
4eaa9819 JS |
1703 | struct soc_mixer_control *mc = |
1704 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 1705 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
1706 | unsigned int reg = mc->reg; |
1707 | unsigned int reg2 = mc->rreg; | |
1708 | unsigned int shift = mc->shift; | |
4eaa9819 | 1709 | int max = mc->max; |
815ecf8d JS |
1710 | unsigned int mask = (1<<fls(max))-1; |
1711 | unsigned int invert = mc->invert; | |
db2a4165 FM |
1712 | |
1713 | ucontrol->value.integer.value[0] = | |
1714 | (snd_soc_read(codec, reg) >> shift) & mask; | |
1715 | ucontrol->value.integer.value[1] = | |
1716 | (snd_soc_read(codec, reg2) >> shift) & mask; | |
1717 | if (invert) { | |
1718 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1719 | max - ucontrol->value.integer.value[0]; |
db2a4165 | 1720 | ucontrol->value.integer.value[1] = |
a7a4ac86 | 1721 | max - ucontrol->value.integer.value[1]; |
db2a4165 FM |
1722 | } |
1723 | ||
1724 | return 0; | |
1725 | } | |
1726 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r); | |
1727 | ||
1728 | /** | |
1729 | * snd_soc_put_volsw_2r - double mixer set callback | |
1730 | * @kcontrol: mixer control | |
1731 | * @uinfo: control element information | |
1732 | * | |
1733 | * Callback to set the value of a double mixer control that spans 2 registers. | |
1734 | * | |
1735 | * Returns 0 for success. | |
1736 | */ | |
1737 | int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol, | |
1738 | struct snd_ctl_elem_value *ucontrol) | |
1739 | { | |
4eaa9819 JS |
1740 | struct soc_mixer_control *mc = |
1741 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 1742 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
1743 | unsigned int reg = mc->reg; |
1744 | unsigned int reg2 = mc->rreg; | |
1745 | unsigned int shift = mc->shift; | |
4eaa9819 | 1746 | int max = mc->max; |
815ecf8d JS |
1747 | unsigned int mask = (1 << fls(max)) - 1; |
1748 | unsigned int invert = mc->invert; | |
db2a4165 FM |
1749 | int err; |
1750 | unsigned short val, val2, val_mask; | |
1751 | ||
1752 | val_mask = mask << shift; | |
1753 | val = (ucontrol->value.integer.value[0] & mask); | |
1754 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1755 | ||
1756 | if (invert) { | |
a7a4ac86 PZ |
1757 | val = max - val; |
1758 | val2 = max - val2; | |
db2a4165 FM |
1759 | } |
1760 | ||
1761 | val = val << shift; | |
1762 | val2 = val2 << shift; | |
1763 | ||
3ff3f64b MB |
1764 | err = snd_soc_update_bits(codec, reg, val_mask, val); |
1765 | if (err < 0) | |
db2a4165 FM |
1766 | return err; |
1767 | ||
1768 | err = snd_soc_update_bits(codec, reg2, val_mask, val2); | |
1769 | return err; | |
1770 | } | |
1771 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r); | |
1772 | ||
e13ac2e9 MB |
1773 | /** |
1774 | * snd_soc_info_volsw_s8 - signed mixer info callback | |
1775 | * @kcontrol: mixer control | |
1776 | * @uinfo: control element information | |
1777 | * | |
1778 | * Callback to provide information about a signed mixer control. | |
1779 | * | |
1780 | * Returns 0 for success. | |
1781 | */ | |
1782 | int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol, | |
1783 | struct snd_ctl_elem_info *uinfo) | |
1784 | { | |
4eaa9819 JS |
1785 | struct soc_mixer_control *mc = |
1786 | (struct soc_mixer_control *)kcontrol->private_value; | |
1787 | int max = mc->max; | |
1788 | int min = mc->min; | |
e13ac2e9 MB |
1789 | |
1790 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
1791 | uinfo->count = 2; | |
1792 | uinfo->value.integer.min = 0; | |
1793 | uinfo->value.integer.max = max-min; | |
1794 | return 0; | |
1795 | } | |
1796 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8); | |
1797 | ||
1798 | /** | |
1799 | * snd_soc_get_volsw_s8 - signed mixer get callback | |
1800 | * @kcontrol: mixer control | |
1801 | * @uinfo: control element information | |
1802 | * | |
1803 | * Callback to get the value of a signed mixer control. | |
1804 | * | |
1805 | * Returns 0 for success. | |
1806 | */ | |
1807 | int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol, | |
1808 | struct snd_ctl_elem_value *ucontrol) | |
1809 | { | |
4eaa9819 JS |
1810 | struct soc_mixer_control *mc = |
1811 | (struct soc_mixer_control *)kcontrol->private_value; | |
e13ac2e9 | 1812 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d | 1813 | unsigned int reg = mc->reg; |
4eaa9819 | 1814 | int min = mc->min; |
e13ac2e9 MB |
1815 | int val = snd_soc_read(codec, reg); |
1816 | ||
1817 | ucontrol->value.integer.value[0] = | |
1818 | ((signed char)(val & 0xff))-min; | |
1819 | ucontrol->value.integer.value[1] = | |
1820 | ((signed char)((val >> 8) & 0xff))-min; | |
1821 | return 0; | |
1822 | } | |
1823 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8); | |
1824 | ||
1825 | /** | |
1826 | * snd_soc_put_volsw_sgn - signed mixer put callback | |
1827 | * @kcontrol: mixer control | |
1828 | * @uinfo: control element information | |
1829 | * | |
1830 | * Callback to set the value of a signed mixer control. | |
1831 | * | |
1832 | * Returns 0 for success. | |
1833 | */ | |
1834 | int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol, | |
1835 | struct snd_ctl_elem_value *ucontrol) | |
1836 | { | |
4eaa9819 JS |
1837 | struct soc_mixer_control *mc = |
1838 | (struct soc_mixer_control *)kcontrol->private_value; | |
e13ac2e9 | 1839 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d | 1840 | unsigned int reg = mc->reg; |
4eaa9819 | 1841 | int min = mc->min; |
e13ac2e9 MB |
1842 | unsigned short val; |
1843 | ||
1844 | val = (ucontrol->value.integer.value[0]+min) & 0xff; | |
1845 | val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8; | |
1846 | ||
1847 | return snd_soc_update_bits(codec, reg, 0xffff, val); | |
1848 | } | |
1849 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8); | |
1850 | ||
8c6529db LG |
1851 | /** |
1852 | * snd_soc_dai_set_sysclk - configure DAI system or master clock. | |
1853 | * @dai: DAI | |
1854 | * @clk_id: DAI specific clock ID | |
1855 | * @freq: new clock frequency in Hz | |
1856 | * @dir: new clock direction - input/output. | |
1857 | * | |
1858 | * Configures the DAI master (MCLK) or system (SYSCLK) clocking. | |
1859 | */ | |
1860 | int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id, | |
1861 | unsigned int freq, int dir) | |
1862 | { | |
dee89c4d MB |
1863 | if (dai->ops.set_sysclk) |
1864 | return dai->ops.set_sysclk(dai, clk_id, freq, dir); | |
8c6529db LG |
1865 | else |
1866 | return -EINVAL; | |
1867 | } | |
1868 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk); | |
1869 | ||
1870 | /** | |
1871 | * snd_soc_dai_set_clkdiv - configure DAI clock dividers. | |
1872 | * @dai: DAI | |
1873 | * @clk_id: DAI specific clock divider ID | |
1874 | * @div: new clock divisor. | |
1875 | * | |
1876 | * Configures the clock dividers. This is used to derive the best DAI bit and | |
1877 | * frame clocks from the system or master clock. It's best to set the DAI bit | |
1878 | * and frame clocks as low as possible to save system power. | |
1879 | */ | |
1880 | int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai, | |
1881 | int div_id, int div) | |
1882 | { | |
dee89c4d MB |
1883 | if (dai->ops.set_clkdiv) |
1884 | return dai->ops.set_clkdiv(dai, div_id, div); | |
8c6529db LG |
1885 | else |
1886 | return -EINVAL; | |
1887 | } | |
1888 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv); | |
1889 | ||
1890 | /** | |
1891 | * snd_soc_dai_set_pll - configure DAI PLL. | |
1892 | * @dai: DAI | |
1893 | * @pll_id: DAI specific PLL ID | |
1894 | * @freq_in: PLL input clock frequency in Hz | |
1895 | * @freq_out: requested PLL output clock frequency in Hz | |
1896 | * | |
1897 | * Configures and enables PLL to generate output clock based on input clock. | |
1898 | */ | |
1899 | int snd_soc_dai_set_pll(struct snd_soc_dai *dai, | |
1900 | int pll_id, unsigned int freq_in, unsigned int freq_out) | |
1901 | { | |
dee89c4d MB |
1902 | if (dai->ops.set_pll) |
1903 | return dai->ops.set_pll(dai, pll_id, freq_in, freq_out); | |
8c6529db LG |
1904 | else |
1905 | return -EINVAL; | |
1906 | } | |
1907 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll); | |
1908 | ||
1909 | /** | |
1910 | * snd_soc_dai_set_fmt - configure DAI hardware audio format. | |
1911 | * @dai: DAI | |
8c6529db LG |
1912 | * @fmt: SND_SOC_DAIFMT_ format value. |
1913 | * | |
1914 | * Configures the DAI hardware format and clocking. | |
1915 | */ | |
1916 | int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) | |
1917 | { | |
dee89c4d MB |
1918 | if (dai->ops.set_fmt) |
1919 | return dai->ops.set_fmt(dai, fmt); | |
8c6529db LG |
1920 | else |
1921 | return -EINVAL; | |
1922 | } | |
1923 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt); | |
1924 | ||
1925 | /** | |
1926 | * snd_soc_dai_set_tdm_slot - configure DAI TDM. | |
1927 | * @dai: DAI | |
1928 | * @mask: DAI specific mask representing used slots. | |
1929 | * @slots: Number of slots in use. | |
1930 | * | |
1931 | * Configures a DAI for TDM operation. Both mask and slots are codec and DAI | |
1932 | * specific. | |
1933 | */ | |
1934 | int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai, | |
1935 | unsigned int mask, int slots) | |
1936 | { | |
dee89c4d MB |
1937 | if (dai->ops.set_sysclk) |
1938 | return dai->ops.set_tdm_slot(dai, mask, slots); | |
8c6529db LG |
1939 | else |
1940 | return -EINVAL; | |
1941 | } | |
1942 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot); | |
1943 | ||
1944 | /** | |
1945 | * snd_soc_dai_set_tristate - configure DAI system or master clock. | |
1946 | * @dai: DAI | |
1947 | * @tristate: tristate enable | |
1948 | * | |
1949 | * Tristates the DAI so that others can use it. | |
1950 | */ | |
1951 | int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate) | |
1952 | { | |
dee89c4d MB |
1953 | if (dai->ops.set_sysclk) |
1954 | return dai->ops.set_tristate(dai, tristate); | |
8c6529db LG |
1955 | else |
1956 | return -EINVAL; | |
1957 | } | |
1958 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate); | |
1959 | ||
1960 | /** | |
1961 | * snd_soc_dai_digital_mute - configure DAI system or master clock. | |
1962 | * @dai: DAI | |
1963 | * @mute: mute enable | |
1964 | * | |
1965 | * Mutes the DAI DAC. | |
1966 | */ | |
1967 | int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute) | |
1968 | { | |
dee89c4d MB |
1969 | if (dai->ops.digital_mute) |
1970 | return dai->ops.digital_mute(dai, mute); | |
8c6529db LG |
1971 | else |
1972 | return -EINVAL; | |
1973 | } | |
1974 | EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute); | |
1975 | ||
c5af3a2e MB |
1976 | /** |
1977 | * snd_soc_register_card - Register a card with the ASoC core | |
1978 | * | |
1979 | * @param card Card to register | |
1980 | * | |
1981 | * Note that currently this is an internal only function: it will be | |
1982 | * exposed to machine drivers after further backporting of ASoC v2 | |
1983 | * registration APIs. | |
1984 | */ | |
1985 | static int snd_soc_register_card(struct snd_soc_card *card) | |
1986 | { | |
1987 | if (!card->name || !card->dev) | |
1988 | return -EINVAL; | |
1989 | ||
1990 | INIT_LIST_HEAD(&card->list); | |
1991 | card->instantiated = 0; | |
1992 | ||
1993 | mutex_lock(&client_mutex); | |
1994 | list_add(&card->list, &card_list); | |
1995 | mutex_unlock(&client_mutex); | |
1996 | ||
1997 | dev_dbg(card->dev, "Registered card '%s'\n", card->name); | |
1998 | ||
1999 | return 0; | |
2000 | } | |
2001 | ||
2002 | /** | |
2003 | * snd_soc_unregister_card - Unregister a card with the ASoC core | |
2004 | * | |
2005 | * @param card Card to unregister | |
2006 | * | |
2007 | * Note that currently this is an internal only function: it will be | |
2008 | * exposed to machine drivers after further backporting of ASoC v2 | |
2009 | * registration APIs. | |
2010 | */ | |
2011 | static int snd_soc_unregister_card(struct snd_soc_card *card) | |
2012 | { | |
2013 | mutex_lock(&client_mutex); | |
2014 | list_del(&card->list); | |
2015 | mutex_unlock(&client_mutex); | |
2016 | ||
2017 | dev_dbg(card->dev, "Unregistered card '%s'\n", card->name); | |
2018 | ||
2019 | return 0; | |
2020 | } | |
2021 | ||
db2a4165 FM |
2022 | static int __devinit snd_soc_init(void) |
2023 | { | |
384c89e2 MB |
2024 | #ifdef CONFIG_DEBUG_FS |
2025 | debugfs_root = debugfs_create_dir("asoc", NULL); | |
2026 | if (IS_ERR(debugfs_root) || !debugfs_root) { | |
2027 | printk(KERN_WARNING | |
2028 | "ASoC: Failed to create debugfs directory\n"); | |
2029 | debugfs_root = NULL; | |
2030 | } | |
2031 | #endif | |
2032 | ||
db2a4165 FM |
2033 | return platform_driver_register(&soc_driver); |
2034 | } | |
2035 | ||
7d8c16a6 | 2036 | static void __exit snd_soc_exit(void) |
db2a4165 | 2037 | { |
384c89e2 MB |
2038 | #ifdef CONFIG_DEBUG_FS |
2039 | debugfs_remove_recursive(debugfs_root); | |
2040 | #endif | |
3ff3f64b | 2041 | platform_driver_unregister(&soc_driver); |
db2a4165 FM |
2042 | } |
2043 | ||
2044 | module_init(snd_soc_init); | |
2045 | module_exit(snd_soc_exit); | |
2046 | ||
2047 | /* Module information */ | |
d331124d | 2048 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
db2a4165 FM |
2049 | MODULE_DESCRIPTION("ALSA SoC Core"); |
2050 | MODULE_LICENSE("GPL"); | |
8b45a209 | 2051 | MODULE_ALIAS("platform:soc-audio"); |