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Commit | Line | Data |
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db2a4165 FM |
1 | /* |
2 | * soc-core.c -- ALSA SoC Audio Layer | |
3 | * | |
4 | * Copyright 2005 Wolfson Microelectronics PLC. | |
0664d888 LG |
5 | * Copyright 2005 Openedhand Ltd. |
6 | * | |
d331124d | 7 | * Author: Liam Girdwood <lrg@slimlogic.co.uk> |
0664d888 LG |
8 | * with code, comments and ideas from :- |
9 | * Richard Purdie <richard@openedhand.com> | |
db2a4165 FM |
10 | * |
11 | * This program is free software; you can redistribute it and/or modify it | |
12 | * under the terms of the GNU General Public License as published by the | |
13 | * Free Software Foundation; either version 2 of the License, or (at your | |
14 | * option) any later version. | |
15 | * | |
db2a4165 FM |
16 | * TODO: |
17 | * o Add hw rules to enforce rates, etc. | |
18 | * o More testing with other codecs/machines. | |
19 | * o Add more codecs and platforms to ensure good API coverage. | |
20 | * o Support TDM on PCM and I2S | |
21 | */ | |
22 | ||
23 | #include <linux/module.h> | |
24 | #include <linux/moduleparam.h> | |
25 | #include <linux/init.h> | |
26 | #include <linux/delay.h> | |
27 | #include <linux/pm.h> | |
28 | #include <linux/bitops.h> | |
12ef193d | 29 | #include <linux/debugfs.h> |
db2a4165 | 30 | #include <linux/platform_device.h> |
db2a4165 FM |
31 | #include <sound/core.h> |
32 | #include <sound/pcm.h> | |
33 | #include <sound/pcm_params.h> | |
34 | #include <sound/soc.h> | |
35 | #include <sound/soc-dapm.h> | |
36 | #include <sound/initval.h> | |
37 | ||
db2a4165 FM |
38 | static DEFINE_MUTEX(pcm_mutex); |
39 | static DEFINE_MUTEX(io_mutex); | |
db2a4165 FM |
40 | static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq); |
41 | ||
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); | |
9115171a | 48 | static LIST_HEAD(dai_list); |
12a48a8c | 49 | static LIST_HEAD(platform_list); |
c5af3a2e MB |
50 | |
51 | static int snd_soc_register_card(struct snd_soc_card *card); | |
52 | static int snd_soc_unregister_card(struct snd_soc_card *card); | |
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 | ||
bb072bf0 KS |
103 | dev_set_name(&codec->ac97->dev, "%d-%d:%s", |
104 | codec->card->number, 0, codec->name); | |
db2a4165 FM |
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 | ||
db2a4165 FM |
115 | /* |
116 | * Called by ALSA when a PCM substream is opened, the runtime->hw record is | |
117 | * then initialized and any private data can be allocated. This also calls | |
118 | * startup for the cpu DAI, platform, machine and codec DAI. | |
119 | */ | |
120 | static int soc_pcm_open(struct snd_pcm_substream *substream) | |
121 | { | |
122 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
123 | struct snd_soc_device *socdev = rtd->socdev; | |
87689d56 | 124 | struct snd_soc_card *card = socdev->card; |
db2a4165 | 125 | struct snd_pcm_runtime *runtime = substream->runtime; |
cb666e5b | 126 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 | 127 | struct snd_soc_platform *platform = card->platform; |
3c4b266f LG |
128 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
129 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
130 | int ret = 0; |
131 | ||
132 | mutex_lock(&pcm_mutex); | |
133 | ||
134 | /* startup the audio subsystem */ | |
cb666e5b | 135 | if (cpu_dai->ops.startup) { |
dee89c4d | 136 | ret = cpu_dai->ops.startup(substream, cpu_dai); |
db2a4165 FM |
137 | if (ret < 0) { |
138 | printk(KERN_ERR "asoc: can't open interface %s\n", | |
cb666e5b | 139 | cpu_dai->name); |
db2a4165 FM |
140 | goto out; |
141 | } | |
142 | } | |
143 | ||
144 | if (platform->pcm_ops->open) { | |
145 | ret = platform->pcm_ops->open(substream); | |
146 | if (ret < 0) { | |
147 | printk(KERN_ERR "asoc: can't open platform %s\n", platform->name); | |
148 | goto platform_err; | |
149 | } | |
150 | } | |
151 | ||
cb666e5b | 152 | if (codec_dai->ops.startup) { |
dee89c4d | 153 | ret = codec_dai->ops.startup(substream, codec_dai); |
db2a4165 | 154 | if (ret < 0) { |
cb666e5b LG |
155 | printk(KERN_ERR "asoc: can't open codec %s\n", |
156 | codec_dai->name); | |
157 | goto codec_dai_err; | |
db2a4165 FM |
158 | } |
159 | } | |
160 | ||
cb666e5b LG |
161 | if (machine->ops && machine->ops->startup) { |
162 | ret = machine->ops->startup(substream); | |
db2a4165 | 163 | if (ret < 0) { |
cb666e5b LG |
164 | printk(KERN_ERR "asoc: %s startup failed\n", machine->name); |
165 | goto machine_err; | |
db2a4165 FM |
166 | } |
167 | } | |
168 | ||
db2a4165 FM |
169 | /* Check that the codec and cpu DAI's are compatible */ |
170 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
171 | runtime->hw.rate_min = | |
3ff3f64b MB |
172 | max(codec_dai->playback.rate_min, |
173 | cpu_dai->playback.rate_min); | |
db2a4165 | 174 | runtime->hw.rate_max = |
3ff3f64b MB |
175 | min(codec_dai->playback.rate_max, |
176 | cpu_dai->playback.rate_max); | |
db2a4165 | 177 | runtime->hw.channels_min = |
cb666e5b LG |
178 | max(codec_dai->playback.channels_min, |
179 | cpu_dai->playback.channels_min); | |
db2a4165 | 180 | runtime->hw.channels_max = |
cb666e5b LG |
181 | min(codec_dai->playback.channels_max, |
182 | cpu_dai->playback.channels_max); | |
183 | runtime->hw.formats = | |
184 | codec_dai->playback.formats & cpu_dai->playback.formats; | |
185 | runtime->hw.rates = | |
186 | codec_dai->playback.rates & cpu_dai->playback.rates; | |
db2a4165 FM |
187 | } else { |
188 | runtime->hw.rate_min = | |
3ff3f64b MB |
189 | max(codec_dai->capture.rate_min, |
190 | cpu_dai->capture.rate_min); | |
db2a4165 | 191 | runtime->hw.rate_max = |
3ff3f64b MB |
192 | min(codec_dai->capture.rate_max, |
193 | cpu_dai->capture.rate_max); | |
db2a4165 | 194 | runtime->hw.channels_min = |
cb666e5b LG |
195 | max(codec_dai->capture.channels_min, |
196 | cpu_dai->capture.channels_min); | |
db2a4165 | 197 | runtime->hw.channels_max = |
cb666e5b LG |
198 | min(codec_dai->capture.channels_max, |
199 | cpu_dai->capture.channels_max); | |
200 | runtime->hw.formats = | |
201 | codec_dai->capture.formats & cpu_dai->capture.formats; | |
202 | runtime->hw.rates = | |
203 | codec_dai->capture.rates & cpu_dai->capture.rates; | |
db2a4165 FM |
204 | } |
205 | ||
206 | snd_pcm_limit_hw_rates(runtime); | |
207 | if (!runtime->hw.rates) { | |
208 | printk(KERN_ERR "asoc: %s <-> %s No matching rates\n", | |
cb666e5b LG |
209 | codec_dai->name, cpu_dai->name); |
210 | goto machine_err; | |
db2a4165 FM |
211 | } |
212 | if (!runtime->hw.formats) { | |
213 | printk(KERN_ERR "asoc: %s <-> %s No matching formats\n", | |
cb666e5b LG |
214 | codec_dai->name, cpu_dai->name); |
215 | goto machine_err; | |
db2a4165 FM |
216 | } |
217 | if (!runtime->hw.channels_min || !runtime->hw.channels_max) { | |
218 | printk(KERN_ERR "asoc: %s <-> %s No matching channels\n", | |
cb666e5b LG |
219 | codec_dai->name, cpu_dai->name); |
220 | goto machine_err; | |
db2a4165 FM |
221 | } |
222 | ||
f24368c2 MB |
223 | pr_debug("asoc: %s <-> %s info:\n", codec_dai->name, cpu_dai->name); |
224 | pr_debug("asoc: rate mask 0x%x\n", runtime->hw.rates); | |
225 | pr_debug("asoc: min ch %d max ch %d\n", runtime->hw.channels_min, | |
226 | runtime->hw.channels_max); | |
227 | pr_debug("asoc: min rate %d max rate %d\n", runtime->hw.rate_min, | |
228 | runtime->hw.rate_max); | |
db2a4165 | 229 | |
db2a4165 | 230 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
cb666e5b | 231 | cpu_dai->playback.active = codec_dai->playback.active = 1; |
db2a4165 | 232 | else |
cb666e5b LG |
233 | cpu_dai->capture.active = codec_dai->capture.active = 1; |
234 | cpu_dai->active = codec_dai->active = 1; | |
235 | cpu_dai->runtime = runtime; | |
db2a4165 FM |
236 | socdev->codec->active++; |
237 | mutex_unlock(&pcm_mutex); | |
238 | return 0; | |
239 | ||
cb666e5b | 240 | machine_err: |
db2a4165 FM |
241 | if (machine->ops && machine->ops->shutdown) |
242 | machine->ops->shutdown(substream); | |
243 | ||
cb666e5b | 244 | codec_dai_err: |
db2a4165 FM |
245 | if (platform->pcm_ops->close) |
246 | platform->pcm_ops->close(substream); | |
247 | ||
248 | platform_err: | |
cb666e5b | 249 | if (cpu_dai->ops.shutdown) |
dee89c4d | 250 | cpu_dai->ops.shutdown(substream, cpu_dai); |
db2a4165 FM |
251 | out: |
252 | mutex_unlock(&pcm_mutex); | |
253 | return ret; | |
254 | } | |
255 | ||
256 | /* | |
3a4fa0a2 | 257 | * Power down the audio subsystem pmdown_time msecs after close is called. |
db2a4165 FM |
258 | * This is to ensure there are no pops or clicks in between any music tracks |
259 | * due to DAPM power cycling. | |
260 | */ | |
4484bb2e | 261 | static void close_delayed_work(struct work_struct *work) |
db2a4165 | 262 | { |
6308419a MB |
263 | struct snd_soc_card *card = container_of(work, struct snd_soc_card, |
264 | delayed_work.work); | |
265 | struct snd_soc_device *socdev = card->socdev; | |
db2a4165 | 266 | struct snd_soc_codec *codec = socdev->codec; |
3c4b266f | 267 | struct snd_soc_dai *codec_dai; |
db2a4165 FM |
268 | int i; |
269 | ||
270 | mutex_lock(&pcm_mutex); | |
3ff3f64b | 271 | for (i = 0; i < codec->num_dai; i++) { |
db2a4165 FM |
272 | codec_dai = &codec->dai[i]; |
273 | ||
f24368c2 MB |
274 | pr_debug("pop wq checking: %s status: %s waiting: %s\n", |
275 | codec_dai->playback.stream_name, | |
276 | codec_dai->playback.active ? "active" : "inactive", | |
277 | codec_dai->pop_wait ? "yes" : "no"); | |
db2a4165 FM |
278 | |
279 | /* are we waiting on this codec DAI stream */ | |
280 | if (codec_dai->pop_wait == 1) { | |
281 | ||
0be9898a | 282 | /* Reduce power if no longer active */ |
3c1c47e0 | 283 | if (codec->active == 0) { |
f24368c2 MB |
284 | pr_debug("pop wq D1 %s %s\n", codec->name, |
285 | codec_dai->playback.stream_name); | |
0be9898a MB |
286 | snd_soc_dapm_set_bias_level(socdev, |
287 | SND_SOC_BIAS_PREPARE); | |
3c1c47e0 LG |
288 | } |
289 | ||
db2a4165 | 290 | codec_dai->pop_wait = 0; |
0b4d221b LG |
291 | snd_soc_dapm_stream_event(codec, |
292 | codec_dai->playback.stream_name, | |
db2a4165 FM |
293 | SND_SOC_DAPM_STREAM_STOP); |
294 | ||
0be9898a | 295 | /* Fall into standby if no longer active */ |
db2a4165 | 296 | if (codec->active == 0) { |
f24368c2 MB |
297 | pr_debug("pop wq D3 %s %s\n", codec->name, |
298 | codec_dai->playback.stream_name); | |
0be9898a MB |
299 | snd_soc_dapm_set_bias_level(socdev, |
300 | SND_SOC_BIAS_STANDBY); | |
db2a4165 FM |
301 | } |
302 | } | |
303 | } | |
304 | mutex_unlock(&pcm_mutex); | |
305 | } | |
306 | ||
307 | /* | |
308 | * Called by ALSA when a PCM substream is closed. Private data can be | |
309 | * freed here. The cpu DAI, codec DAI, machine and platform are also | |
310 | * shutdown. | |
311 | */ | |
312 | static int soc_codec_close(struct snd_pcm_substream *substream) | |
313 | { | |
314 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
315 | struct snd_soc_device *socdev = rtd->socdev; | |
6308419a | 316 | struct snd_soc_card *card = socdev->card; |
cb666e5b | 317 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 | 318 | struct snd_soc_platform *platform = card->platform; |
3c4b266f LG |
319 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
320 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
321 | struct snd_soc_codec *codec = socdev->codec; |
322 | ||
323 | mutex_lock(&pcm_mutex); | |
324 | ||
325 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
cb666e5b | 326 | cpu_dai->playback.active = codec_dai->playback.active = 0; |
db2a4165 | 327 | else |
cb666e5b | 328 | cpu_dai->capture.active = codec_dai->capture.active = 0; |
db2a4165 | 329 | |
cb666e5b LG |
330 | if (codec_dai->playback.active == 0 && |
331 | codec_dai->capture.active == 0) { | |
332 | cpu_dai->active = codec_dai->active = 0; | |
db2a4165 FM |
333 | } |
334 | codec->active--; | |
335 | ||
6010b2da MB |
336 | /* Muting the DAC suppresses artifacts caused during digital |
337 | * shutdown, for example from stopping clocks. | |
338 | */ | |
339 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
340 | snd_soc_dai_digital_mute(codec_dai, 1); | |
341 | ||
cb666e5b | 342 | if (cpu_dai->ops.shutdown) |
dee89c4d | 343 | cpu_dai->ops.shutdown(substream, cpu_dai); |
db2a4165 | 344 | |
cb666e5b | 345 | if (codec_dai->ops.shutdown) |
dee89c4d | 346 | codec_dai->ops.shutdown(substream, codec_dai); |
db2a4165 FM |
347 | |
348 | if (machine->ops && machine->ops->shutdown) | |
349 | machine->ops->shutdown(substream); | |
350 | ||
351 | if (platform->pcm_ops->close) | |
352 | platform->pcm_ops->close(substream); | |
cb666e5b | 353 | cpu_dai->runtime = NULL; |
db2a4165 FM |
354 | |
355 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
356 | /* start delayed pop wq here for playback streams */ | |
cb666e5b | 357 | codec_dai->pop_wait = 1; |
6308419a | 358 | schedule_delayed_work(&card->delayed_work, |
db2a4165 FM |
359 | msecs_to_jiffies(pmdown_time)); |
360 | } else { | |
361 | /* capture streams can be powered down now */ | |
cb666e5b | 362 | snd_soc_dapm_stream_event(codec, |
0b4d221b LG |
363 | codec_dai->capture.stream_name, |
364 | SND_SOC_DAPM_STREAM_STOP); | |
db2a4165 | 365 | |
0b4d221b | 366 | if (codec->active == 0 && codec_dai->pop_wait == 0) |
0be9898a MB |
367 | snd_soc_dapm_set_bias_level(socdev, |
368 | SND_SOC_BIAS_STANDBY); | |
db2a4165 FM |
369 | } |
370 | ||
371 | mutex_unlock(&pcm_mutex); | |
372 | return 0; | |
373 | } | |
374 | ||
375 | /* | |
376 | * Called by ALSA when the PCM substream is prepared, can set format, sample | |
377 | * rate, etc. This function is non atomic and can be called multiple times, | |
378 | * it can refer to the runtime info. | |
379 | */ | |
380 | static int soc_pcm_prepare(struct snd_pcm_substream *substream) | |
381 | { | |
382 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
383 | struct snd_soc_device *socdev = rtd->socdev; | |
6308419a | 384 | struct snd_soc_card *card = socdev->card; |
cb666e5b | 385 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 | 386 | struct snd_soc_platform *platform = card->platform; |
3c4b266f LG |
387 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
388 | struct snd_soc_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 | 410 | if (codec_dai->ops.prepare) { |
dee89c4d | 411 | ret = codec_dai->ops.prepare(substream, codec_dai); |
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 | 418 | if (cpu_dai->ops.prepare) { |
dee89c4d | 419 | ret = cpu_dai->ops.prepare(substream, cpu_dai); |
cb666e5b LG |
420 | if (ret < 0) { |
421 | printk(KERN_ERR "asoc: cpu DAI prepare error\n"); | |
422 | goto out; | |
423 | } | |
424 | } | |
db2a4165 | 425 | |
d45f6219 MB |
426 | /* cancel any delayed stream shutdown that is pending */ |
427 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
428 | codec_dai->pop_wait) { | |
429 | codec_dai->pop_wait = 0; | |
6308419a | 430 | cancel_delayed_work(&card->delayed_work); |
d45f6219 | 431 | } |
db2a4165 | 432 | |
d45f6219 MB |
433 | /* do we need to power up codec */ |
434 | if (codec->bias_level != SND_SOC_BIAS_ON) { | |
435 | snd_soc_dapm_set_bias_level(socdev, | |
436 | SND_SOC_BIAS_PREPARE); | |
db2a4165 | 437 | |
d45f6219 MB |
438 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
439 | snd_soc_dapm_stream_event(codec, | |
cb666e5b | 440 | codec_dai->playback.stream_name, |
db2a4165 | 441 | SND_SOC_DAPM_STREAM_START); |
d45f6219 MB |
442 | else |
443 | snd_soc_dapm_stream_event(codec, | |
cb666e5b | 444 | codec_dai->capture.stream_name, |
db2a4165 FM |
445 | SND_SOC_DAPM_STREAM_START); |
446 | ||
d45f6219 MB |
447 | snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_ON); |
448 | snd_soc_dai_digital_mute(codec_dai, 0); | |
db2a4165 | 449 | |
d45f6219 MB |
450 | } else { |
451 | /* codec already powered - power on widgets */ | |
452 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
453 | snd_soc_dapm_stream_event(codec, | |
cb666e5b | 454 | codec_dai->playback.stream_name, |
db2a4165 | 455 | SND_SOC_DAPM_STREAM_START); |
d45f6219 MB |
456 | else |
457 | snd_soc_dapm_stream_event(codec, | |
cb666e5b | 458 | codec_dai->capture.stream_name, |
db2a4165 | 459 | SND_SOC_DAPM_STREAM_START); |
8c6529db | 460 | |
d45f6219 | 461 | snd_soc_dai_digital_mute(codec_dai, 0); |
db2a4165 FM |
462 | } |
463 | ||
464 | out: | |
465 | mutex_unlock(&pcm_mutex); | |
466 | return ret; | |
467 | } | |
468 | ||
469 | /* | |
470 | * Called by ALSA when the hardware params are set by application. This | |
471 | * function can also be called multiple times and can allocate buffers | |
472 | * (using snd_pcm_lib_* ). It's non-atomic. | |
473 | */ | |
474 | static int soc_pcm_hw_params(struct snd_pcm_substream *substream, | |
475 | struct snd_pcm_hw_params *params) | |
476 | { | |
477 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
478 | struct snd_soc_device *socdev = rtd->socdev; | |
cb666e5b | 479 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 MB |
480 | struct snd_soc_card *card = socdev->card; |
481 | struct snd_soc_platform *platform = card->platform; | |
3c4b266f LG |
482 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
483 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
484 | int ret = 0; |
485 | ||
486 | mutex_lock(&pcm_mutex); | |
487 | ||
cb666e5b LG |
488 | if (machine->ops && machine->ops->hw_params) { |
489 | ret = machine->ops->hw_params(substream, params); | |
490 | if (ret < 0) { | |
491 | printk(KERN_ERR "asoc: machine hw_params failed\n"); | |
db2a4165 | 492 | goto out; |
cb666e5b | 493 | } |
db2a4165 FM |
494 | } |
495 | ||
cb666e5b | 496 | if (codec_dai->ops.hw_params) { |
dee89c4d | 497 | ret = codec_dai->ops.hw_params(substream, params, codec_dai); |
db2a4165 FM |
498 | if (ret < 0) { |
499 | printk(KERN_ERR "asoc: can't set codec %s hw params\n", | |
cb666e5b LG |
500 | codec_dai->name); |
501 | goto codec_err; | |
db2a4165 FM |
502 | } |
503 | } | |
504 | ||
cb666e5b | 505 | if (cpu_dai->ops.hw_params) { |
dee89c4d | 506 | ret = cpu_dai->ops.hw_params(substream, params, cpu_dai); |
db2a4165 | 507 | if (ret < 0) { |
3ff3f64b | 508 | printk(KERN_ERR "asoc: interface %s hw params failed\n", |
cb666e5b | 509 | cpu_dai->name); |
db2a4165 FM |
510 | goto interface_err; |
511 | } | |
512 | } | |
513 | ||
514 | if (platform->pcm_ops->hw_params) { | |
515 | ret = platform->pcm_ops->hw_params(substream, params); | |
516 | if (ret < 0) { | |
3ff3f64b | 517 | printk(KERN_ERR "asoc: platform %s hw params failed\n", |
db2a4165 FM |
518 | platform->name); |
519 | goto platform_err; | |
520 | } | |
521 | } | |
522 | ||
db2a4165 FM |
523 | out: |
524 | mutex_unlock(&pcm_mutex); | |
525 | return ret; | |
526 | ||
db2a4165 | 527 | platform_err: |
cb666e5b | 528 | if (cpu_dai->ops.hw_free) |
dee89c4d | 529 | cpu_dai->ops.hw_free(substream, cpu_dai); |
db2a4165 FM |
530 | |
531 | interface_err: | |
cb666e5b | 532 | if (codec_dai->ops.hw_free) |
dee89c4d | 533 | codec_dai->ops.hw_free(substream, codec_dai); |
cb666e5b LG |
534 | |
535 | codec_err: | |
3ff3f64b | 536 | if (machine->ops && machine->ops->hw_free) |
cb666e5b | 537 | machine->ops->hw_free(substream); |
db2a4165 FM |
538 | |
539 | mutex_unlock(&pcm_mutex); | |
540 | return ret; | |
541 | } | |
542 | ||
543 | /* | |
544 | * Free's resources allocated by hw_params, can be called multiple times | |
545 | */ | |
546 | static int soc_pcm_hw_free(struct snd_pcm_substream *substream) | |
547 | { | |
548 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
549 | struct snd_soc_device *socdev = rtd->socdev; | |
cb666e5b | 550 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 MB |
551 | struct snd_soc_card *card = socdev->card; |
552 | struct snd_soc_platform *platform = card->platform; | |
3c4b266f LG |
553 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
554 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 | 555 | struct snd_soc_codec *codec = socdev->codec; |
db2a4165 FM |
556 | |
557 | mutex_lock(&pcm_mutex); | |
558 | ||
559 | /* apply codec digital mute */ | |
8c6529db LG |
560 | if (!codec->active) |
561 | snd_soc_dai_digital_mute(codec_dai, 1); | |
db2a4165 FM |
562 | |
563 | /* free any machine hw params */ | |
564 | if (machine->ops && machine->ops->hw_free) | |
565 | machine->ops->hw_free(substream); | |
566 | ||
567 | /* free any DMA resources */ | |
568 | if (platform->pcm_ops->hw_free) | |
569 | platform->pcm_ops->hw_free(substream); | |
570 | ||
571 | /* now free hw params for the DAI's */ | |
cb666e5b | 572 | if (codec_dai->ops.hw_free) |
dee89c4d | 573 | codec_dai->ops.hw_free(substream, codec_dai); |
db2a4165 | 574 | |
cb666e5b | 575 | if (cpu_dai->ops.hw_free) |
dee89c4d | 576 | cpu_dai->ops.hw_free(substream, cpu_dai); |
db2a4165 FM |
577 | |
578 | mutex_unlock(&pcm_mutex); | |
579 | return 0; | |
580 | } | |
581 | ||
582 | static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd) | |
583 | { | |
584 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
585 | struct snd_soc_device *socdev = rtd->socdev; | |
87689d56 | 586 | struct snd_soc_card *card= socdev->card; |
cb666e5b | 587 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 | 588 | struct snd_soc_platform *platform = card->platform; |
3c4b266f LG |
589 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
590 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
591 | int ret; |
592 | ||
cb666e5b | 593 | if (codec_dai->ops.trigger) { |
dee89c4d | 594 | ret = codec_dai->ops.trigger(substream, cmd, codec_dai); |
db2a4165 FM |
595 | if (ret < 0) |
596 | return ret; | |
597 | } | |
598 | ||
599 | if (platform->pcm_ops->trigger) { | |
600 | ret = platform->pcm_ops->trigger(substream, cmd); | |
601 | if (ret < 0) | |
602 | return ret; | |
603 | } | |
604 | ||
cb666e5b | 605 | if (cpu_dai->ops.trigger) { |
dee89c4d | 606 | ret = cpu_dai->ops.trigger(substream, cmd, cpu_dai); |
db2a4165 FM |
607 | if (ret < 0) |
608 | return ret; | |
609 | } | |
610 | return 0; | |
611 | } | |
612 | ||
613 | /* ASoC PCM operations */ | |
614 | static struct snd_pcm_ops soc_pcm_ops = { | |
615 | .open = soc_pcm_open, | |
616 | .close = soc_codec_close, | |
617 | .hw_params = soc_pcm_hw_params, | |
618 | .hw_free = soc_pcm_hw_free, | |
619 | .prepare = soc_pcm_prepare, | |
620 | .trigger = soc_pcm_trigger, | |
621 | }; | |
622 | ||
623 | #ifdef CONFIG_PM | |
624 | /* powers down audio subsystem for suspend */ | |
625 | static int soc_suspend(struct platform_device *pdev, pm_message_t state) | |
626 | { | |
3ff3f64b | 627 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
87506549 | 628 | struct snd_soc_card *card = socdev->card; |
87689d56 | 629 | struct snd_soc_platform *platform = card->platform; |
3ff3f64b | 630 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; |
db2a4165 FM |
631 | struct snd_soc_codec *codec = socdev->codec; |
632 | int i; | |
633 | ||
6ed25978 AG |
634 | /* Due to the resume being scheduled into a workqueue we could |
635 | * suspend before that's finished - wait for it to complete. | |
636 | */ | |
637 | snd_power_lock(codec->card); | |
638 | snd_power_wait(codec->card, SNDRV_CTL_POWER_D0); | |
639 | snd_power_unlock(codec->card); | |
640 | ||
641 | /* we're going to block userspace touching us until resume completes */ | |
642 | snd_power_change_state(codec->card, SNDRV_CTL_POWER_D3hot); | |
643 | ||
db2a4165 | 644 | /* mute any active DAC's */ |
dee89c4d MB |
645 | for (i = 0; i < card->num_links; i++) { |
646 | struct snd_soc_dai *dai = card->dai_link[i].codec_dai; | |
647 | if (dai->ops.digital_mute && dai->playback.active) | |
648 | dai->ops.digital_mute(dai, 1); | |
db2a4165 FM |
649 | } |
650 | ||
4ccab3e7 | 651 | /* suspend all pcms */ |
87506549 MB |
652 | for (i = 0; i < card->num_links; i++) |
653 | snd_pcm_suspend_all(card->dai_link[i].pcm); | |
4ccab3e7 | 654 | |
87506549 MB |
655 | if (card->suspend_pre) |
656 | card->suspend_pre(pdev, state); | |
db2a4165 | 657 | |
87506549 MB |
658 | for (i = 0; i < card->num_links; i++) { |
659 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
3ba9e10a | 660 | if (cpu_dai->suspend && !cpu_dai->ac97_control) |
dc7d7b83 | 661 | cpu_dai->suspend(cpu_dai); |
db2a4165 | 662 | if (platform->suspend) |
07c84d04 | 663 | platform->suspend(cpu_dai); |
db2a4165 FM |
664 | } |
665 | ||
666 | /* close any waiting streams and save state */ | |
6308419a | 667 | run_delayed_work(&card->delayed_work); |
0be9898a | 668 | codec->suspend_bias_level = codec->bias_level; |
db2a4165 | 669 | |
3ff3f64b | 670 | for (i = 0; i < codec->num_dai; i++) { |
db2a4165 FM |
671 | char *stream = codec->dai[i].playback.stream_name; |
672 | if (stream != NULL) | |
673 | snd_soc_dapm_stream_event(codec, stream, | |
674 | SND_SOC_DAPM_STREAM_SUSPEND); | |
675 | stream = codec->dai[i].capture.stream_name; | |
676 | if (stream != NULL) | |
677 | snd_soc_dapm_stream_event(codec, stream, | |
678 | SND_SOC_DAPM_STREAM_SUSPEND); | |
679 | } | |
680 | ||
681 | if (codec_dev->suspend) | |
682 | codec_dev->suspend(pdev, state); | |
683 | ||
87506549 MB |
684 | for (i = 0; i < card->num_links; i++) { |
685 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
3ba9e10a | 686 | if (cpu_dai->suspend && cpu_dai->ac97_control) |
dc7d7b83 | 687 | cpu_dai->suspend(cpu_dai); |
db2a4165 FM |
688 | } |
689 | ||
87506549 MB |
690 | if (card->suspend_post) |
691 | card->suspend_post(pdev, state); | |
db2a4165 FM |
692 | |
693 | return 0; | |
694 | } | |
695 | ||
6ed25978 AG |
696 | /* deferred resume work, so resume can complete before we finished |
697 | * setting our codec back up, which can be very slow on I2C | |
698 | */ | |
699 | static void soc_resume_deferred(struct work_struct *work) | |
db2a4165 | 700 | { |
6308419a MB |
701 | struct snd_soc_card *card = container_of(work, |
702 | struct snd_soc_card, | |
703 | deferred_resume_work); | |
704 | struct snd_soc_device *socdev = card->socdev; | |
87689d56 | 705 | struct snd_soc_platform *platform = card->platform; |
3ff3f64b | 706 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; |
db2a4165 | 707 | struct snd_soc_codec *codec = socdev->codec; |
6ed25978 | 708 | struct platform_device *pdev = to_platform_device(socdev->dev); |
db2a4165 FM |
709 | int i; |
710 | ||
6ed25978 AG |
711 | /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time, |
712 | * so userspace apps are blocked from touching us | |
713 | */ | |
714 | ||
fde22f27 | 715 | dev_dbg(socdev->dev, "starting resume work\n"); |
6ed25978 | 716 | |
87506549 MB |
717 | if (card->resume_pre) |
718 | card->resume_pre(pdev); | |
db2a4165 | 719 | |
87506549 MB |
720 | for (i = 0; i < card->num_links; i++) { |
721 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
3ba9e10a | 722 | if (cpu_dai->resume && cpu_dai->ac97_control) |
dc7d7b83 | 723 | cpu_dai->resume(cpu_dai); |
db2a4165 FM |
724 | } |
725 | ||
726 | if (codec_dev->resume) | |
727 | codec_dev->resume(pdev); | |
728 | ||
3ff3f64b MB |
729 | for (i = 0; i < codec->num_dai; i++) { |
730 | char *stream = codec->dai[i].playback.stream_name; | |
db2a4165 FM |
731 | if (stream != NULL) |
732 | snd_soc_dapm_stream_event(codec, stream, | |
733 | SND_SOC_DAPM_STREAM_RESUME); | |
734 | stream = codec->dai[i].capture.stream_name; | |
735 | if (stream != NULL) | |
736 | snd_soc_dapm_stream_event(codec, stream, | |
737 | SND_SOC_DAPM_STREAM_RESUME); | |
738 | } | |
739 | ||
3ff3f64b | 740 | /* unmute any active DACs */ |
dee89c4d MB |
741 | for (i = 0; i < card->num_links; i++) { |
742 | struct snd_soc_dai *dai = card->dai_link[i].codec_dai; | |
743 | if (dai->ops.digital_mute && dai->playback.active) | |
744 | dai->ops.digital_mute(dai, 0); | |
db2a4165 FM |
745 | } |
746 | ||
87506549 MB |
747 | for (i = 0; i < card->num_links; i++) { |
748 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
3ba9e10a | 749 | if (cpu_dai->resume && !cpu_dai->ac97_control) |
dc7d7b83 | 750 | cpu_dai->resume(cpu_dai); |
db2a4165 | 751 | if (platform->resume) |
07c84d04 | 752 | platform->resume(cpu_dai); |
db2a4165 FM |
753 | } |
754 | ||
87506549 MB |
755 | if (card->resume_post) |
756 | card->resume_post(pdev); | |
db2a4165 | 757 | |
fde22f27 | 758 | dev_dbg(socdev->dev, "resume work completed\n"); |
6ed25978 AG |
759 | |
760 | /* userspace can access us now we are back as we were before */ | |
761 | snd_power_change_state(codec->card, SNDRV_CTL_POWER_D0); | |
762 | } | |
763 | ||
764 | /* powers up audio subsystem after a suspend */ | |
765 | static int soc_resume(struct platform_device *pdev) | |
766 | { | |
767 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
6308419a | 768 | struct snd_soc_card *card = socdev->card; |
6ed25978 | 769 | |
fde22f27 | 770 | dev_dbg(socdev->dev, "scheduling resume work\n"); |
6ed25978 | 771 | |
6308419a | 772 | if (!schedule_work(&card->deferred_resume_work)) |
fde22f27 | 773 | dev_err(socdev->dev, "resume work item may be lost\n"); |
6ed25978 | 774 | |
db2a4165 FM |
775 | return 0; |
776 | } | |
777 | ||
778 | #else | |
779 | #define soc_suspend NULL | |
780 | #define soc_resume NULL | |
781 | #endif | |
782 | ||
435c5e25 | 783 | static void snd_soc_instantiate_card(struct snd_soc_card *card) |
db2a4165 | 784 | { |
435c5e25 MB |
785 | struct platform_device *pdev = container_of(card->dev, |
786 | struct platform_device, | |
787 | dev); | |
788 | struct snd_soc_codec_device *codec_dev = card->socdev->codec_dev; | |
789 | struct snd_soc_platform *platform; | |
790 | struct snd_soc_dai *dai; | |
6b05eda6 | 791 | int i, found, ret, ac97; |
435c5e25 MB |
792 | |
793 | if (card->instantiated) | |
794 | return; | |
795 | ||
796 | found = 0; | |
797 | list_for_each_entry(platform, &platform_list, list) | |
798 | if (card->platform == platform) { | |
799 | found = 1; | |
800 | break; | |
801 | } | |
802 | if (!found) { | |
803 | dev_dbg(card->dev, "Platform %s not registered\n", | |
804 | card->platform->name); | |
805 | return; | |
806 | } | |
6308419a | 807 | |
6b05eda6 | 808 | ac97 = 0; |
435c5e25 MB |
809 | for (i = 0; i < card->num_links; i++) { |
810 | found = 0; | |
811 | list_for_each_entry(dai, &dai_list, list) | |
812 | if (card->dai_link[i].cpu_dai == dai) { | |
813 | found = 1; | |
814 | break; | |
815 | } | |
816 | if (!found) { | |
817 | dev_dbg(card->dev, "DAI %s not registered\n", | |
818 | card->dai_link[i].cpu_dai->name); | |
819 | return; | |
820 | } | |
6b05eda6 MB |
821 | |
822 | if (card->dai_link[i].cpu_dai->ac97_control) | |
823 | ac97 = 1; | |
c5af3a2e MB |
824 | } |
825 | ||
6b05eda6 MB |
826 | /* If we have AC97 in the system then don't wait for the |
827 | * codec. This will need revisiting if we have to handle | |
828 | * systems with mixed AC97 and non-AC97 parts. Only check for | |
829 | * DAIs currently; we can't do this per link since some AC97 | |
830 | * codecs have non-AC97 DAIs. | |
831 | */ | |
832 | if (!ac97) | |
833 | for (i = 0; i < card->num_links; i++) { | |
834 | found = 0; | |
835 | list_for_each_entry(dai, &dai_list, list) | |
836 | if (card->dai_link[i].codec_dai == dai) { | |
837 | found = 1; | |
838 | break; | |
839 | } | |
840 | if (!found) { | |
841 | dev_dbg(card->dev, "DAI %s not registered\n", | |
842 | card->dai_link[i].codec_dai->name); | |
843 | return; | |
844 | } | |
845 | } | |
846 | ||
435c5e25 MB |
847 | /* Note that we do not current check for codec components */ |
848 | ||
849 | dev_dbg(card->dev, "All components present, instantiating\n"); | |
850 | ||
851 | /* Found everything, bring it up */ | |
87506549 MB |
852 | if (card->probe) { |
853 | ret = card->probe(pdev); | |
3ff3f64b | 854 | if (ret < 0) |
435c5e25 | 855 | return; |
db2a4165 FM |
856 | } |
857 | ||
87506549 MB |
858 | for (i = 0; i < card->num_links; i++) { |
859 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
db2a4165 | 860 | if (cpu_dai->probe) { |
bdb92876 | 861 | ret = cpu_dai->probe(pdev, cpu_dai); |
3ff3f64b | 862 | if (ret < 0) |
db2a4165 FM |
863 | goto cpu_dai_err; |
864 | } | |
865 | } | |
866 | ||
867 | if (codec_dev->probe) { | |
868 | ret = codec_dev->probe(pdev); | |
3ff3f64b | 869 | if (ret < 0) |
db2a4165 FM |
870 | goto cpu_dai_err; |
871 | } | |
872 | ||
873 | if (platform->probe) { | |
874 | ret = platform->probe(pdev); | |
3ff3f64b | 875 | if (ret < 0) |
db2a4165 FM |
876 | goto platform_err; |
877 | } | |
878 | ||
879 | /* DAPM stream work */ | |
6308419a | 880 | INIT_DELAYED_WORK(&card->delayed_work, close_delayed_work); |
1301a964 | 881 | #ifdef CONFIG_PM |
6ed25978 | 882 | /* deferred resume work */ |
6308419a | 883 | INIT_WORK(&card->deferred_resume_work, soc_resume_deferred); |
1301a964 | 884 | #endif |
6ed25978 | 885 | |
435c5e25 MB |
886 | card->instantiated = 1; |
887 | ||
888 | return; | |
db2a4165 | 889 | |
db2a4165 FM |
890 | platform_err: |
891 | if (codec_dev->remove) | |
892 | codec_dev->remove(pdev); | |
893 | ||
894 | cpu_dai_err: | |
18b9b3d9 | 895 | for (i--; i >= 0; i--) { |
87506549 | 896 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; |
db2a4165 | 897 | if (cpu_dai->remove) |
bdb92876 | 898 | cpu_dai->remove(pdev, cpu_dai); |
db2a4165 FM |
899 | } |
900 | ||
87506549 MB |
901 | if (card->remove) |
902 | card->remove(pdev); | |
435c5e25 | 903 | } |
db2a4165 | 904 | |
435c5e25 MB |
905 | /* |
906 | * Attempt to initialise any uninitalised cards. Must be called with | |
907 | * client_mutex. | |
908 | */ | |
909 | static void snd_soc_instantiate_cards(void) | |
910 | { | |
911 | struct snd_soc_card *card; | |
912 | list_for_each_entry(card, &card_list, list) | |
913 | snd_soc_instantiate_card(card); | |
914 | } | |
915 | ||
916 | /* probes a new socdev */ | |
917 | static int soc_probe(struct platform_device *pdev) | |
918 | { | |
919 | int ret = 0; | |
920 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
921 | struct snd_soc_card *card = socdev->card; | |
922 | ||
923 | /* Bodge while we push things out of socdev */ | |
924 | card->socdev = socdev; | |
925 | ||
926 | /* Bodge while we unpick instantiation */ | |
927 | card->dev = &pdev->dev; | |
928 | ret = snd_soc_register_card(card); | |
929 | if (ret != 0) { | |
930 | dev_err(&pdev->dev, "Failed to register card\n"); | |
931 | return ret; | |
932 | } | |
933 | ||
934 | return 0; | |
db2a4165 FM |
935 | } |
936 | ||
937 | /* removes a socdev */ | |
938 | static int soc_remove(struct platform_device *pdev) | |
939 | { | |
940 | int i; | |
941 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
87506549 | 942 | struct snd_soc_card *card = socdev->card; |
87689d56 | 943 | struct snd_soc_platform *platform = card->platform; |
db2a4165 FM |
944 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; |
945 | ||
6308419a | 946 | run_delayed_work(&card->delayed_work); |
965ac42c | 947 | |
db2a4165 FM |
948 | if (platform->remove) |
949 | platform->remove(pdev); | |
950 | ||
951 | if (codec_dev->remove) | |
952 | codec_dev->remove(pdev); | |
953 | ||
87506549 MB |
954 | for (i = 0; i < card->num_links; i++) { |
955 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
db2a4165 | 956 | if (cpu_dai->remove) |
bdb92876 | 957 | cpu_dai->remove(pdev, cpu_dai); |
db2a4165 FM |
958 | } |
959 | ||
87506549 MB |
960 | if (card->remove) |
961 | card->remove(pdev); | |
db2a4165 | 962 | |
c5af3a2e MB |
963 | snd_soc_unregister_card(card); |
964 | ||
db2a4165 FM |
965 | return 0; |
966 | } | |
967 | ||
968 | /* ASoC platform driver */ | |
969 | static struct platform_driver soc_driver = { | |
970 | .driver = { | |
971 | .name = "soc-audio", | |
8b45a209 | 972 | .owner = THIS_MODULE, |
db2a4165 FM |
973 | }, |
974 | .probe = soc_probe, | |
975 | .remove = soc_remove, | |
976 | .suspend = soc_suspend, | |
977 | .resume = soc_resume, | |
978 | }; | |
979 | ||
980 | /* create a new pcm */ | |
981 | static int soc_new_pcm(struct snd_soc_device *socdev, | |
982 | struct snd_soc_dai_link *dai_link, int num) | |
983 | { | |
984 | struct snd_soc_codec *codec = socdev->codec; | |
87689d56 MB |
985 | struct snd_soc_card *card = socdev->card; |
986 | struct snd_soc_platform *platform = card->platform; | |
3c4b266f LG |
987 | struct snd_soc_dai *codec_dai = dai_link->codec_dai; |
988 | struct snd_soc_dai *cpu_dai = dai_link->cpu_dai; | |
db2a4165 FM |
989 | struct snd_soc_pcm_runtime *rtd; |
990 | struct snd_pcm *pcm; | |
991 | char new_name[64]; | |
992 | int ret = 0, playback = 0, capture = 0; | |
993 | ||
994 | rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime), GFP_KERNEL); | |
995 | if (rtd == NULL) | |
996 | return -ENOMEM; | |
cb666e5b LG |
997 | |
998 | rtd->dai = dai_link; | |
db2a4165 | 999 | rtd->socdev = socdev; |
cb666e5b | 1000 | codec_dai->codec = socdev->codec; |
db2a4165 FM |
1001 | |
1002 | /* check client and interface hw capabilities */ | |
3ba9e10a MB |
1003 | sprintf(new_name, "%s %s-%d", dai_link->stream_name, codec_dai->name, |
1004 | num); | |
db2a4165 FM |
1005 | |
1006 | if (codec_dai->playback.channels_min) | |
1007 | playback = 1; | |
1008 | if (codec_dai->capture.channels_min) | |
1009 | capture = 1; | |
1010 | ||
1011 | ret = snd_pcm_new(codec->card, new_name, codec->pcm_devs++, playback, | |
1012 | capture, &pcm); | |
1013 | if (ret < 0) { | |
3ff3f64b MB |
1014 | printk(KERN_ERR "asoc: can't create pcm for codec %s\n", |
1015 | codec->name); | |
db2a4165 FM |
1016 | kfree(rtd); |
1017 | return ret; | |
1018 | } | |
1019 | ||
4ccab3e7 | 1020 | dai_link->pcm = pcm; |
db2a4165 | 1021 | pcm->private_data = rtd; |
87689d56 MB |
1022 | soc_pcm_ops.mmap = platform->pcm_ops->mmap; |
1023 | soc_pcm_ops.pointer = platform->pcm_ops->pointer; | |
1024 | soc_pcm_ops.ioctl = platform->pcm_ops->ioctl; | |
1025 | soc_pcm_ops.copy = platform->pcm_ops->copy; | |
1026 | soc_pcm_ops.silence = platform->pcm_ops->silence; | |
1027 | soc_pcm_ops.ack = platform->pcm_ops->ack; | |
1028 | soc_pcm_ops.page = platform->pcm_ops->page; | |
db2a4165 FM |
1029 | |
1030 | if (playback) | |
1031 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &soc_pcm_ops); | |
1032 | ||
1033 | if (capture) | |
1034 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &soc_pcm_ops); | |
1035 | ||
87689d56 | 1036 | ret = platform->pcm_new(codec->card, codec_dai, pcm); |
db2a4165 FM |
1037 | if (ret < 0) { |
1038 | printk(KERN_ERR "asoc: platform pcm constructor failed\n"); | |
1039 | kfree(rtd); | |
1040 | return ret; | |
1041 | } | |
1042 | ||
87689d56 | 1043 | pcm->private_free = platform->pcm_free; |
db2a4165 FM |
1044 | printk(KERN_INFO "asoc: %s <-> %s mapping ok\n", codec_dai->name, |
1045 | cpu_dai->name); | |
1046 | return ret; | |
1047 | } | |
1048 | ||
1049 | /* codec register dump */ | |
12ef193d | 1050 | static ssize_t soc_codec_reg_show(struct snd_soc_device *devdata, char *buf) |
db2a4165 | 1051 | { |
db2a4165 FM |
1052 | struct snd_soc_codec *codec = devdata->codec; |
1053 | int i, step = 1, count = 0; | |
1054 | ||
1055 | if (!codec->reg_cache_size) | |
1056 | return 0; | |
1057 | ||
1058 | if (codec->reg_cache_step) | |
1059 | step = codec->reg_cache_step; | |
1060 | ||
1061 | count += sprintf(buf, "%s registers\n", codec->name); | |
58cd33c0 MB |
1062 | for (i = 0; i < codec->reg_cache_size; i += step) { |
1063 | count += sprintf(buf + count, "%2x: ", i); | |
1064 | if (count >= PAGE_SIZE - 1) | |
1065 | break; | |
1066 | ||
1067 | if (codec->display_register) | |
1068 | count += codec->display_register(codec, buf + count, | |
1069 | PAGE_SIZE - count, i); | |
1070 | else | |
1071 | count += snprintf(buf + count, PAGE_SIZE - count, | |
1072 | "%4x", codec->read(codec, i)); | |
1073 | ||
1074 | if (count >= PAGE_SIZE - 1) | |
1075 | break; | |
1076 | ||
1077 | count += snprintf(buf + count, PAGE_SIZE - count, "\n"); | |
1078 | if (count >= PAGE_SIZE - 1) | |
1079 | break; | |
1080 | } | |
1081 | ||
1082 | /* Truncate count; min() would cause a warning */ | |
1083 | if (count >= PAGE_SIZE) | |
1084 | count = PAGE_SIZE - 1; | |
db2a4165 FM |
1085 | |
1086 | return count; | |
1087 | } | |
12ef193d TK |
1088 | static ssize_t codec_reg_show(struct device *dev, |
1089 | struct device_attribute *attr, char *buf) | |
1090 | { | |
1091 | struct snd_soc_device *devdata = dev_get_drvdata(dev); | |
1092 | return soc_codec_reg_show(devdata, buf); | |
1093 | } | |
1094 | ||
db2a4165 FM |
1095 | static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL); |
1096 | ||
12ef193d TK |
1097 | #ifdef CONFIG_DEBUG_FS |
1098 | static int codec_reg_open_file(struct inode *inode, struct file *file) | |
1099 | { | |
1100 | file->private_data = inode->i_private; | |
1101 | return 0; | |
1102 | } | |
1103 | ||
1104 | static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf, | |
1105 | size_t count, loff_t *ppos) | |
1106 | { | |
1107 | ssize_t ret; | |
384c89e2 MB |
1108 | struct snd_soc_codec *codec = file->private_data; |
1109 | struct device *card_dev = codec->card->dev; | |
1110 | struct snd_soc_device *devdata = card_dev->driver_data; | |
12ef193d TK |
1111 | char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL); |
1112 | if (!buf) | |
1113 | return -ENOMEM; | |
1114 | ret = soc_codec_reg_show(devdata, buf); | |
1115 | if (ret >= 0) | |
1116 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); | |
1117 | kfree(buf); | |
1118 | return ret; | |
1119 | } | |
1120 | ||
1121 | static ssize_t codec_reg_write_file(struct file *file, | |
1122 | const char __user *user_buf, size_t count, loff_t *ppos) | |
1123 | { | |
1124 | char buf[32]; | |
1125 | int buf_size; | |
1126 | char *start = buf; | |
1127 | unsigned long reg, value; | |
1128 | int step = 1; | |
384c89e2 | 1129 | struct snd_soc_codec *codec = file->private_data; |
12ef193d TK |
1130 | |
1131 | buf_size = min(count, (sizeof(buf)-1)); | |
1132 | if (copy_from_user(buf, user_buf, buf_size)) | |
1133 | return -EFAULT; | |
1134 | buf[buf_size] = 0; | |
1135 | ||
1136 | if (codec->reg_cache_step) | |
1137 | step = codec->reg_cache_step; | |
1138 | ||
1139 | while (*start == ' ') | |
1140 | start++; | |
1141 | reg = simple_strtoul(start, &start, 16); | |
1142 | if ((reg >= codec->reg_cache_size) || (reg % step)) | |
1143 | return -EINVAL; | |
1144 | while (*start == ' ') | |
1145 | start++; | |
1146 | if (strict_strtoul(start, 16, &value)) | |
1147 | return -EINVAL; | |
1148 | codec->write(codec, reg, value); | |
1149 | return buf_size; | |
1150 | } | |
1151 | ||
1152 | static const struct file_operations codec_reg_fops = { | |
1153 | .open = codec_reg_open_file, | |
1154 | .read = codec_reg_read_file, | |
1155 | .write = codec_reg_write_file, | |
1156 | }; | |
1157 | ||
384c89e2 | 1158 | static void soc_init_codec_debugfs(struct snd_soc_codec *codec) |
12ef193d | 1159 | { |
384c89e2 MB |
1160 | codec->debugfs_reg = debugfs_create_file("codec_reg", 0644, |
1161 | debugfs_root, codec, | |
1162 | &codec_reg_fops); | |
1163 | if (!codec->debugfs_reg) | |
1164 | printk(KERN_WARNING | |
1165 | "ASoC: Failed to create codec register debugfs file\n"); | |
1166 | ||
1167 | codec->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0744, | |
1168 | debugfs_root, | |
1169 | &codec->pop_time); | |
1170 | if (!codec->debugfs_pop_time) | |
1171 | printk(KERN_WARNING | |
1172 | "Failed to create pop time debugfs file\n"); | |
12ef193d TK |
1173 | } |
1174 | ||
384c89e2 | 1175 | static void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec) |
12ef193d | 1176 | { |
384c89e2 MB |
1177 | debugfs_remove(codec->debugfs_pop_time); |
1178 | debugfs_remove(codec->debugfs_reg); | |
12ef193d TK |
1179 | } |
1180 | ||
1181 | #else | |
1182 | ||
384c89e2 | 1183 | static inline void soc_init_codec_debugfs(struct snd_soc_codec *codec) |
12ef193d TK |
1184 | { |
1185 | } | |
1186 | ||
384c89e2 | 1187 | static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec) |
12ef193d TK |
1188 | { |
1189 | } | |
1190 | #endif | |
1191 | ||
db2a4165 FM |
1192 | /** |
1193 | * snd_soc_new_ac97_codec - initailise AC97 device | |
1194 | * @codec: audio codec | |
1195 | * @ops: AC97 bus operations | |
1196 | * @num: AC97 codec number | |
1197 | * | |
1198 | * Initialises AC97 codec resources for use by ad-hoc devices only. | |
1199 | */ | |
1200 | int snd_soc_new_ac97_codec(struct snd_soc_codec *codec, | |
1201 | struct snd_ac97_bus_ops *ops, int num) | |
1202 | { | |
1203 | mutex_lock(&codec->mutex); | |
1204 | ||
1205 | codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL); | |
1206 | if (codec->ac97 == NULL) { | |
1207 | mutex_unlock(&codec->mutex); | |
1208 | return -ENOMEM; | |
1209 | } | |
1210 | ||
1211 | codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL); | |
1212 | if (codec->ac97->bus == NULL) { | |
1213 | kfree(codec->ac97); | |
1214 | codec->ac97 = NULL; | |
1215 | mutex_unlock(&codec->mutex); | |
1216 | return -ENOMEM; | |
1217 | } | |
1218 | ||
1219 | codec->ac97->bus->ops = ops; | |
1220 | codec->ac97->num = num; | |
1221 | mutex_unlock(&codec->mutex); | |
1222 | return 0; | |
1223 | } | |
1224 | EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec); | |
1225 | ||
1226 | /** | |
1227 | * snd_soc_free_ac97_codec - free AC97 codec device | |
1228 | * @codec: audio codec | |
1229 | * | |
1230 | * Frees AC97 codec device resources. | |
1231 | */ | |
1232 | void snd_soc_free_ac97_codec(struct snd_soc_codec *codec) | |
1233 | { | |
1234 | mutex_lock(&codec->mutex); | |
1235 | kfree(codec->ac97->bus); | |
1236 | kfree(codec->ac97); | |
1237 | codec->ac97 = NULL; | |
1238 | mutex_unlock(&codec->mutex); | |
1239 | } | |
1240 | EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec); | |
1241 | ||
1242 | /** | |
1243 | * snd_soc_update_bits - update codec register bits | |
1244 | * @codec: audio codec | |
1245 | * @reg: codec register | |
1246 | * @mask: register mask | |
1247 | * @value: new value | |
1248 | * | |
1249 | * Writes new register value. | |
1250 | * | |
1251 | * Returns 1 for change else 0. | |
1252 | */ | |
1253 | int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg, | |
1254 | unsigned short mask, unsigned short value) | |
1255 | { | |
1256 | int change; | |
1257 | unsigned short old, new; | |
1258 | ||
1259 | mutex_lock(&io_mutex); | |
1260 | old = snd_soc_read(codec, reg); | |
1261 | new = (old & ~mask) | value; | |
1262 | change = old != new; | |
1263 | if (change) | |
1264 | snd_soc_write(codec, reg, new); | |
1265 | ||
1266 | mutex_unlock(&io_mutex); | |
1267 | return change; | |
1268 | } | |
1269 | EXPORT_SYMBOL_GPL(snd_soc_update_bits); | |
1270 | ||
1271 | /** | |
1272 | * snd_soc_test_bits - test register for change | |
1273 | * @codec: audio codec | |
1274 | * @reg: codec register | |
1275 | * @mask: register mask | |
1276 | * @value: new value | |
1277 | * | |
1278 | * Tests a register with a new value and checks if the new value is | |
1279 | * different from the old value. | |
1280 | * | |
1281 | * Returns 1 for change else 0. | |
1282 | */ | |
1283 | int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg, | |
1284 | unsigned short mask, unsigned short value) | |
1285 | { | |
1286 | int change; | |
1287 | unsigned short old, new; | |
1288 | ||
1289 | mutex_lock(&io_mutex); | |
1290 | old = snd_soc_read(codec, reg); | |
1291 | new = (old & ~mask) | value; | |
1292 | change = old != new; | |
1293 | mutex_unlock(&io_mutex); | |
1294 | ||
1295 | return change; | |
1296 | } | |
1297 | EXPORT_SYMBOL_GPL(snd_soc_test_bits); | |
1298 | ||
db2a4165 FM |
1299 | /** |
1300 | * snd_soc_new_pcms - create new sound card and pcms | |
1301 | * @socdev: the SoC audio device | |
1302 | * | |
1303 | * Create a new sound card based upon the codec and interface pcms. | |
1304 | * | |
1305 | * Returns 0 for success, else error. | |
1306 | */ | |
bc7320c5 | 1307 | int snd_soc_new_pcms(struct snd_soc_device *socdev, int idx, const char *xid) |
db2a4165 FM |
1308 | { |
1309 | struct snd_soc_codec *codec = socdev->codec; | |
87506549 | 1310 | struct snd_soc_card *card = socdev->card; |
db2a4165 FM |
1311 | int ret = 0, i; |
1312 | ||
1313 | mutex_lock(&codec->mutex); | |
1314 | ||
1315 | /* register a sound card */ | |
1316 | codec->card = snd_card_new(idx, xid, codec->owner, 0); | |
1317 | if (!codec->card) { | |
1318 | printk(KERN_ERR "asoc: can't create sound card for codec %s\n", | |
1319 | codec->name); | |
1320 | mutex_unlock(&codec->mutex); | |
1321 | return -ENODEV; | |
1322 | } | |
1323 | ||
1324 | codec->card->dev = socdev->dev; | |
1325 | codec->card->private_data = codec; | |
1326 | strncpy(codec->card->driver, codec->name, sizeof(codec->card->driver)); | |
1327 | ||
1328 | /* create the pcms */ | |
87506549 MB |
1329 | for (i = 0; i < card->num_links; i++) { |
1330 | ret = soc_new_pcm(socdev, &card->dai_link[i], i); | |
db2a4165 FM |
1331 | if (ret < 0) { |
1332 | printk(KERN_ERR "asoc: can't create pcm %s\n", | |
87506549 | 1333 | card->dai_link[i].stream_name); |
db2a4165 FM |
1334 | mutex_unlock(&codec->mutex); |
1335 | return ret; | |
1336 | } | |
1337 | } | |
1338 | ||
1339 | mutex_unlock(&codec->mutex); | |
1340 | return ret; | |
1341 | } | |
1342 | EXPORT_SYMBOL_GPL(snd_soc_new_pcms); | |
1343 | ||
1344 | /** | |
968a6025 | 1345 | * snd_soc_init_card - register sound card |
db2a4165 FM |
1346 | * @socdev: the SoC audio device |
1347 | * | |
1348 | * Register a SoC sound card. Also registers an AC97 device if the | |
1349 | * codec is AC97 for ad hoc devices. | |
1350 | * | |
1351 | * Returns 0 for success, else error. | |
1352 | */ | |
968a6025 | 1353 | int snd_soc_init_card(struct snd_soc_device *socdev) |
db2a4165 FM |
1354 | { |
1355 | struct snd_soc_codec *codec = socdev->codec; | |
87506549 | 1356 | struct snd_soc_card *card = socdev->card; |
12e74f7d | 1357 | int ret = 0, i, ac97 = 0, err = 0; |
db2a4165 | 1358 | |
87506549 MB |
1359 | for (i = 0; i < card->num_links; i++) { |
1360 | if (card->dai_link[i].init) { | |
1361 | err = card->dai_link[i].init(codec); | |
12e74f7d LG |
1362 | if (err < 0) { |
1363 | printk(KERN_ERR "asoc: failed to init %s\n", | |
87506549 | 1364 | card->dai_link[i].stream_name); |
12e74f7d LG |
1365 | continue; |
1366 | } | |
1367 | } | |
3ba9e10a | 1368 | if (card->dai_link[i].codec_dai->ac97_control) |
db2a4165 FM |
1369 | ac97 = 1; |
1370 | } | |
1371 | snprintf(codec->card->shortname, sizeof(codec->card->shortname), | |
87506549 | 1372 | "%s", card->name); |
db2a4165 | 1373 | snprintf(codec->card->longname, sizeof(codec->card->longname), |
87506549 | 1374 | "%s (%s)", card->name, codec->name); |
db2a4165 FM |
1375 | |
1376 | ret = snd_card_register(codec->card); | |
1377 | if (ret < 0) { | |
3ff3f64b | 1378 | printk(KERN_ERR "asoc: failed to register soundcard for %s\n", |
db2a4165 | 1379 | codec->name); |
12e74f7d | 1380 | goto out; |
db2a4165 FM |
1381 | } |
1382 | ||
08c8efe6 | 1383 | mutex_lock(&codec->mutex); |
db2a4165 | 1384 | #ifdef CONFIG_SND_SOC_AC97_BUS |
12e74f7d LG |
1385 | if (ac97) { |
1386 | ret = soc_ac97_dev_register(codec); | |
1387 | if (ret < 0) { | |
1388 | printk(KERN_ERR "asoc: AC97 device register failed\n"); | |
1389 | snd_card_free(codec->card); | |
08c8efe6 | 1390 | mutex_unlock(&codec->mutex); |
12e74f7d LG |
1391 | goto out; |
1392 | } | |
1393 | } | |
db2a4165 FM |
1394 | #endif |
1395 | ||
12e74f7d LG |
1396 | err = snd_soc_dapm_sys_add(socdev->dev); |
1397 | if (err < 0) | |
1398 | printk(KERN_WARNING "asoc: failed to add dapm sysfs entries\n"); | |
1399 | ||
1400 | err = device_create_file(socdev->dev, &dev_attr_codec_reg); | |
1401 | if (err < 0) | |
3ff3f64b | 1402 | printk(KERN_WARNING "asoc: failed to add codec sysfs files\n"); |
08c8efe6 | 1403 | |
384c89e2 | 1404 | soc_init_codec_debugfs(socdev->codec); |
db2a4165 | 1405 | mutex_unlock(&codec->mutex); |
08c8efe6 MB |
1406 | |
1407 | out: | |
db2a4165 FM |
1408 | return ret; |
1409 | } | |
968a6025 | 1410 | EXPORT_SYMBOL_GPL(snd_soc_init_card); |
db2a4165 FM |
1411 | |
1412 | /** | |
1413 | * snd_soc_free_pcms - free sound card and pcms | |
1414 | * @socdev: the SoC audio device | |
1415 | * | |
1416 | * Frees sound card and pcms associated with the socdev. | |
1417 | * Also unregister the codec if it is an AC97 device. | |
1418 | */ | |
1419 | void snd_soc_free_pcms(struct snd_soc_device *socdev) | |
1420 | { | |
1421 | struct snd_soc_codec *codec = socdev->codec; | |
a68660e0 | 1422 | #ifdef CONFIG_SND_SOC_AC97_BUS |
3c4b266f | 1423 | struct snd_soc_dai *codec_dai; |
a68660e0 LG |
1424 | int i; |
1425 | #endif | |
db2a4165 FM |
1426 | |
1427 | mutex_lock(&codec->mutex); | |
384c89e2 | 1428 | soc_cleanup_codec_debugfs(socdev->codec); |
db2a4165 | 1429 | #ifdef CONFIG_SND_SOC_AC97_BUS |
3ff3f64b | 1430 | for (i = 0; i < codec->num_dai; i++) { |
a68660e0 | 1431 | codec_dai = &codec->dai[i]; |
3ba9e10a | 1432 | if (codec_dai->ac97_control && codec->ac97) { |
a68660e0 LG |
1433 | soc_ac97_dev_unregister(codec); |
1434 | goto free_card; | |
1435 | } | |
1436 | } | |
1437 | free_card: | |
db2a4165 FM |
1438 | #endif |
1439 | ||
1440 | if (codec->card) | |
1441 | snd_card_free(codec->card); | |
1442 | device_remove_file(socdev->dev, &dev_attr_codec_reg); | |
1443 | mutex_unlock(&codec->mutex); | |
1444 | } | |
1445 | EXPORT_SYMBOL_GPL(snd_soc_free_pcms); | |
1446 | ||
1447 | /** | |
1448 | * snd_soc_set_runtime_hwparams - set the runtime hardware parameters | |
1449 | * @substream: the pcm substream | |
1450 | * @hw: the hardware parameters | |
1451 | * | |
1452 | * Sets the substream runtime hardware parameters. | |
1453 | */ | |
1454 | int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream, | |
1455 | const struct snd_pcm_hardware *hw) | |
1456 | { | |
1457 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1458 | runtime->hw.info = hw->info; | |
1459 | runtime->hw.formats = hw->formats; | |
1460 | runtime->hw.period_bytes_min = hw->period_bytes_min; | |
1461 | runtime->hw.period_bytes_max = hw->period_bytes_max; | |
1462 | runtime->hw.periods_min = hw->periods_min; | |
1463 | runtime->hw.periods_max = hw->periods_max; | |
1464 | runtime->hw.buffer_bytes_max = hw->buffer_bytes_max; | |
1465 | runtime->hw.fifo_size = hw->fifo_size; | |
1466 | return 0; | |
1467 | } | |
1468 | EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams); | |
1469 | ||
1470 | /** | |
1471 | * snd_soc_cnew - create new control | |
1472 | * @_template: control template | |
1473 | * @data: control private data | |
1474 | * @lnng_name: control long name | |
1475 | * | |
1476 | * Create a new mixer control from a template control. | |
1477 | * | |
1478 | * Returns 0 for success, else error. | |
1479 | */ | |
1480 | struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template, | |
1481 | void *data, char *long_name) | |
1482 | { | |
1483 | struct snd_kcontrol_new template; | |
1484 | ||
1485 | memcpy(&template, _template, sizeof(template)); | |
1486 | if (long_name) | |
1487 | template.name = long_name; | |
db2a4165 FM |
1488 | template.index = 0; |
1489 | ||
1490 | return snd_ctl_new1(&template, data); | |
1491 | } | |
1492 | EXPORT_SYMBOL_GPL(snd_soc_cnew); | |
1493 | ||
1494 | /** | |
1495 | * snd_soc_info_enum_double - enumerated double mixer info callback | |
1496 | * @kcontrol: mixer control | |
1497 | * @uinfo: control element information | |
1498 | * | |
1499 | * Callback to provide information about a double enumerated | |
1500 | * mixer control. | |
1501 | * | |
1502 | * Returns 0 for success. | |
1503 | */ | |
1504 | int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol, | |
1505 | struct snd_ctl_elem_info *uinfo) | |
1506 | { | |
1507 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1508 | ||
1509 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; | |
1510 | uinfo->count = e->shift_l == e->shift_r ? 1 : 2; | |
f8ba0b7b | 1511 | uinfo->value.enumerated.items = e->max; |
db2a4165 | 1512 | |
f8ba0b7b JS |
1513 | if (uinfo->value.enumerated.item > e->max - 1) |
1514 | uinfo->value.enumerated.item = e->max - 1; | |
db2a4165 FM |
1515 | strcpy(uinfo->value.enumerated.name, |
1516 | e->texts[uinfo->value.enumerated.item]); | |
1517 | return 0; | |
1518 | } | |
1519 | EXPORT_SYMBOL_GPL(snd_soc_info_enum_double); | |
1520 | ||
1521 | /** | |
1522 | * snd_soc_get_enum_double - enumerated double mixer get callback | |
1523 | * @kcontrol: mixer control | |
1524 | * @uinfo: control element information | |
1525 | * | |
1526 | * Callback to get the value of a double enumerated mixer. | |
1527 | * | |
1528 | * Returns 0 for success. | |
1529 | */ | |
1530 | int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol, | |
1531 | struct snd_ctl_elem_value *ucontrol) | |
1532 | { | |
1533 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1534 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1535 | unsigned short val, bitmask; | |
1536 | ||
f8ba0b7b | 1537 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
db2a4165 FM |
1538 | ; |
1539 | val = snd_soc_read(codec, e->reg); | |
3ff3f64b MB |
1540 | ucontrol->value.enumerated.item[0] |
1541 | = (val >> e->shift_l) & (bitmask - 1); | |
db2a4165 FM |
1542 | if (e->shift_l != e->shift_r) |
1543 | ucontrol->value.enumerated.item[1] = | |
1544 | (val >> e->shift_r) & (bitmask - 1); | |
1545 | ||
1546 | return 0; | |
1547 | } | |
1548 | EXPORT_SYMBOL_GPL(snd_soc_get_enum_double); | |
1549 | ||
1550 | /** | |
1551 | * snd_soc_put_enum_double - enumerated double mixer put callback | |
1552 | * @kcontrol: mixer control | |
1553 | * @uinfo: control element information | |
1554 | * | |
1555 | * Callback to set the value of a double enumerated mixer. | |
1556 | * | |
1557 | * Returns 0 for success. | |
1558 | */ | |
1559 | int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol, | |
1560 | struct snd_ctl_elem_value *ucontrol) | |
1561 | { | |
1562 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1563 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1564 | unsigned short val; | |
1565 | unsigned short mask, bitmask; | |
1566 | ||
f8ba0b7b | 1567 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
db2a4165 | 1568 | ; |
f8ba0b7b | 1569 | if (ucontrol->value.enumerated.item[0] > e->max - 1) |
db2a4165 FM |
1570 | return -EINVAL; |
1571 | val = ucontrol->value.enumerated.item[0] << e->shift_l; | |
1572 | mask = (bitmask - 1) << e->shift_l; | |
1573 | if (e->shift_l != e->shift_r) { | |
f8ba0b7b | 1574 | if (ucontrol->value.enumerated.item[1] > e->max - 1) |
db2a4165 FM |
1575 | return -EINVAL; |
1576 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
1577 | mask |= (bitmask - 1) << e->shift_r; | |
1578 | } | |
1579 | ||
1580 | return snd_soc_update_bits(codec, e->reg, mask, val); | |
1581 | } | |
1582 | EXPORT_SYMBOL_GPL(snd_soc_put_enum_double); | |
1583 | ||
1584 | /** | |
1585 | * snd_soc_info_enum_ext - external enumerated single mixer info callback | |
1586 | * @kcontrol: mixer control | |
1587 | * @uinfo: control element information | |
1588 | * | |
1589 | * Callback to provide information about an external enumerated | |
1590 | * single mixer. | |
1591 | * | |
1592 | * Returns 0 for success. | |
1593 | */ | |
1594 | int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol, | |
1595 | struct snd_ctl_elem_info *uinfo) | |
1596 | { | |
1597 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1598 | ||
1599 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; | |
1600 | uinfo->count = 1; | |
f8ba0b7b | 1601 | uinfo->value.enumerated.items = e->max; |
db2a4165 | 1602 | |
f8ba0b7b JS |
1603 | if (uinfo->value.enumerated.item > e->max - 1) |
1604 | uinfo->value.enumerated.item = e->max - 1; | |
db2a4165 FM |
1605 | strcpy(uinfo->value.enumerated.name, |
1606 | e->texts[uinfo->value.enumerated.item]); | |
1607 | return 0; | |
1608 | } | |
1609 | EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext); | |
1610 | ||
1611 | /** | |
1612 | * snd_soc_info_volsw_ext - external single mixer info callback | |
1613 | * @kcontrol: mixer control | |
1614 | * @uinfo: control element information | |
1615 | * | |
1616 | * Callback to provide information about a single external mixer control. | |
1617 | * | |
1618 | * Returns 0 for success. | |
1619 | */ | |
1620 | int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol, | |
1621 | struct snd_ctl_elem_info *uinfo) | |
1622 | { | |
a7a4ac86 PZ |
1623 | int max = kcontrol->private_value; |
1624 | ||
1625 | if (max == 1) | |
1626 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1627 | else | |
1628 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
db2a4165 | 1629 | |
db2a4165 FM |
1630 | uinfo->count = 1; |
1631 | uinfo->value.integer.min = 0; | |
a7a4ac86 | 1632 | uinfo->value.integer.max = max; |
db2a4165 FM |
1633 | return 0; |
1634 | } | |
1635 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext); | |
1636 | ||
db2a4165 FM |
1637 | /** |
1638 | * snd_soc_info_volsw - single mixer info callback | |
1639 | * @kcontrol: mixer control | |
1640 | * @uinfo: control element information | |
1641 | * | |
1642 | * Callback to provide information about a single mixer control. | |
1643 | * | |
1644 | * Returns 0 for success. | |
1645 | */ | |
1646 | int snd_soc_info_volsw(struct snd_kcontrol *kcontrol, | |
1647 | struct snd_ctl_elem_info *uinfo) | |
1648 | { | |
4eaa9819 JS |
1649 | struct soc_mixer_control *mc = |
1650 | (struct soc_mixer_control *)kcontrol->private_value; | |
1651 | int max = mc->max; | |
762b8df7 | 1652 | unsigned int shift = mc->shift; |
815ecf8d | 1653 | unsigned int rshift = mc->rshift; |
db2a4165 | 1654 | |
a7a4ac86 PZ |
1655 | if (max == 1) |
1656 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1657 | else | |
1658 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
1659 | ||
db2a4165 FM |
1660 | uinfo->count = shift == rshift ? 1 : 2; |
1661 | uinfo->value.integer.min = 0; | |
a7a4ac86 | 1662 | uinfo->value.integer.max = max; |
db2a4165 FM |
1663 | return 0; |
1664 | } | |
1665 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw); | |
1666 | ||
1667 | /** | |
1668 | * snd_soc_get_volsw - single mixer get callback | |
1669 | * @kcontrol: mixer control | |
1670 | * @uinfo: control element information | |
1671 | * | |
1672 | * Callback to get the value of a single mixer control. | |
1673 | * | |
1674 | * Returns 0 for success. | |
1675 | */ | |
1676 | int snd_soc_get_volsw(struct snd_kcontrol *kcontrol, | |
1677 | struct snd_ctl_elem_value *ucontrol) | |
1678 | { | |
4eaa9819 JS |
1679 | struct soc_mixer_control *mc = |
1680 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 1681 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
1682 | unsigned int reg = mc->reg; |
1683 | unsigned int shift = mc->shift; | |
1684 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1685 | int max = mc->max; |
815ecf8d JS |
1686 | unsigned int mask = (1 << fls(max)) - 1; |
1687 | unsigned int invert = mc->invert; | |
db2a4165 FM |
1688 | |
1689 | ucontrol->value.integer.value[0] = | |
1690 | (snd_soc_read(codec, reg) >> shift) & mask; | |
1691 | if (shift != rshift) | |
1692 | ucontrol->value.integer.value[1] = | |
1693 | (snd_soc_read(codec, reg) >> rshift) & mask; | |
1694 | if (invert) { | |
1695 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1696 | max - ucontrol->value.integer.value[0]; |
db2a4165 FM |
1697 | if (shift != rshift) |
1698 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 1699 | max - ucontrol->value.integer.value[1]; |
db2a4165 FM |
1700 | } |
1701 | ||
1702 | return 0; | |
1703 | } | |
1704 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw); | |
1705 | ||
1706 | /** | |
1707 | * snd_soc_put_volsw - single mixer put callback | |
1708 | * @kcontrol: mixer control | |
1709 | * @uinfo: control element information | |
1710 | * | |
1711 | * Callback to set the value of a single mixer control. | |
1712 | * | |
1713 | * Returns 0 for success. | |
1714 | */ | |
1715 | int snd_soc_put_volsw(struct snd_kcontrol *kcontrol, | |
1716 | struct snd_ctl_elem_value *ucontrol) | |
1717 | { | |
4eaa9819 JS |
1718 | struct soc_mixer_control *mc = |
1719 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 1720 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
1721 | unsigned int reg = mc->reg; |
1722 | unsigned int shift = mc->shift; | |
1723 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1724 | int max = mc->max; |
815ecf8d JS |
1725 | unsigned int mask = (1 << fls(max)) - 1; |
1726 | unsigned int invert = mc->invert; | |
db2a4165 FM |
1727 | unsigned short val, val2, val_mask; |
1728 | ||
1729 | val = (ucontrol->value.integer.value[0] & mask); | |
1730 | if (invert) | |
a7a4ac86 | 1731 | val = max - val; |
db2a4165 FM |
1732 | val_mask = mask << shift; |
1733 | val = val << shift; | |
1734 | if (shift != rshift) { | |
1735 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1736 | if (invert) | |
a7a4ac86 | 1737 | val2 = max - val2; |
db2a4165 FM |
1738 | val_mask |= mask << rshift; |
1739 | val |= val2 << rshift; | |
1740 | } | |
a7a4ac86 | 1741 | return snd_soc_update_bits(codec, reg, val_mask, val); |
db2a4165 FM |
1742 | } |
1743 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw); | |
1744 | ||
1745 | /** | |
1746 | * snd_soc_info_volsw_2r - double mixer info callback | |
1747 | * @kcontrol: mixer control | |
1748 | * @uinfo: control element information | |
1749 | * | |
1750 | * Callback to provide information about a double mixer control that | |
1751 | * spans 2 codec registers. | |
1752 | * | |
1753 | * Returns 0 for success. | |
1754 | */ | |
1755 | int snd_soc_info_volsw_2r(struct snd_kcontrol *kcontrol, | |
1756 | struct snd_ctl_elem_info *uinfo) | |
1757 | { | |
4eaa9819 JS |
1758 | struct soc_mixer_control *mc = |
1759 | (struct soc_mixer_control *)kcontrol->private_value; | |
1760 | int max = mc->max; | |
a7a4ac86 PZ |
1761 | |
1762 | if (max == 1) | |
1763 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1764 | else | |
1765 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
db2a4165 | 1766 | |
db2a4165 FM |
1767 | uinfo->count = 2; |
1768 | uinfo->value.integer.min = 0; | |
a7a4ac86 | 1769 | uinfo->value.integer.max = max; |
db2a4165 FM |
1770 | return 0; |
1771 | } | |
1772 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r); | |
1773 | ||
1774 | /** | |
1775 | * snd_soc_get_volsw_2r - double mixer get callback | |
1776 | * @kcontrol: mixer control | |
1777 | * @uinfo: control element information | |
1778 | * | |
1779 | * Callback to get the value of a double mixer control that spans 2 registers. | |
1780 | * | |
1781 | * Returns 0 for success. | |
1782 | */ | |
1783 | int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol, | |
1784 | struct snd_ctl_elem_value *ucontrol) | |
1785 | { | |
4eaa9819 JS |
1786 | struct soc_mixer_control *mc = |
1787 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 1788 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
1789 | unsigned int reg = mc->reg; |
1790 | unsigned int reg2 = mc->rreg; | |
1791 | unsigned int shift = mc->shift; | |
4eaa9819 | 1792 | int max = mc->max; |
815ecf8d JS |
1793 | unsigned int mask = (1<<fls(max))-1; |
1794 | unsigned int invert = mc->invert; | |
db2a4165 FM |
1795 | |
1796 | ucontrol->value.integer.value[0] = | |
1797 | (snd_soc_read(codec, reg) >> shift) & mask; | |
1798 | ucontrol->value.integer.value[1] = | |
1799 | (snd_soc_read(codec, reg2) >> shift) & mask; | |
1800 | if (invert) { | |
1801 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1802 | max - ucontrol->value.integer.value[0]; |
db2a4165 | 1803 | ucontrol->value.integer.value[1] = |
a7a4ac86 | 1804 | max - ucontrol->value.integer.value[1]; |
db2a4165 FM |
1805 | } |
1806 | ||
1807 | return 0; | |
1808 | } | |
1809 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r); | |
1810 | ||
1811 | /** | |
1812 | * snd_soc_put_volsw_2r - double mixer set callback | |
1813 | * @kcontrol: mixer control | |
1814 | * @uinfo: control element information | |
1815 | * | |
1816 | * Callback to set the value of a double mixer control that spans 2 registers. | |
1817 | * | |
1818 | * Returns 0 for success. | |
1819 | */ | |
1820 | int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol, | |
1821 | struct snd_ctl_elem_value *ucontrol) | |
1822 | { | |
4eaa9819 JS |
1823 | struct soc_mixer_control *mc = |
1824 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 1825 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
1826 | unsigned int reg = mc->reg; |
1827 | unsigned int reg2 = mc->rreg; | |
1828 | unsigned int shift = mc->shift; | |
4eaa9819 | 1829 | int max = mc->max; |
815ecf8d JS |
1830 | unsigned int mask = (1 << fls(max)) - 1; |
1831 | unsigned int invert = mc->invert; | |
db2a4165 FM |
1832 | int err; |
1833 | unsigned short val, val2, val_mask; | |
1834 | ||
1835 | val_mask = mask << shift; | |
1836 | val = (ucontrol->value.integer.value[0] & mask); | |
1837 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1838 | ||
1839 | if (invert) { | |
a7a4ac86 PZ |
1840 | val = max - val; |
1841 | val2 = max - val2; | |
db2a4165 FM |
1842 | } |
1843 | ||
1844 | val = val << shift; | |
1845 | val2 = val2 << shift; | |
1846 | ||
3ff3f64b MB |
1847 | err = snd_soc_update_bits(codec, reg, val_mask, val); |
1848 | if (err < 0) | |
db2a4165 FM |
1849 | return err; |
1850 | ||
1851 | err = snd_soc_update_bits(codec, reg2, val_mask, val2); | |
1852 | return err; | |
1853 | } | |
1854 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r); | |
1855 | ||
e13ac2e9 MB |
1856 | /** |
1857 | * snd_soc_info_volsw_s8 - signed mixer info callback | |
1858 | * @kcontrol: mixer control | |
1859 | * @uinfo: control element information | |
1860 | * | |
1861 | * Callback to provide information about a signed mixer control. | |
1862 | * | |
1863 | * Returns 0 for success. | |
1864 | */ | |
1865 | int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol, | |
1866 | struct snd_ctl_elem_info *uinfo) | |
1867 | { | |
4eaa9819 JS |
1868 | struct soc_mixer_control *mc = |
1869 | (struct soc_mixer_control *)kcontrol->private_value; | |
1870 | int max = mc->max; | |
1871 | int min = mc->min; | |
e13ac2e9 MB |
1872 | |
1873 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
1874 | uinfo->count = 2; | |
1875 | uinfo->value.integer.min = 0; | |
1876 | uinfo->value.integer.max = max-min; | |
1877 | return 0; | |
1878 | } | |
1879 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8); | |
1880 | ||
1881 | /** | |
1882 | * snd_soc_get_volsw_s8 - signed mixer get callback | |
1883 | * @kcontrol: mixer control | |
1884 | * @uinfo: control element information | |
1885 | * | |
1886 | * Callback to get the value of a signed mixer control. | |
1887 | * | |
1888 | * Returns 0 for success. | |
1889 | */ | |
1890 | int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol, | |
1891 | struct snd_ctl_elem_value *ucontrol) | |
1892 | { | |
4eaa9819 JS |
1893 | struct soc_mixer_control *mc = |
1894 | (struct soc_mixer_control *)kcontrol->private_value; | |
e13ac2e9 | 1895 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d | 1896 | unsigned int reg = mc->reg; |
4eaa9819 | 1897 | int min = mc->min; |
e13ac2e9 MB |
1898 | int val = snd_soc_read(codec, reg); |
1899 | ||
1900 | ucontrol->value.integer.value[0] = | |
1901 | ((signed char)(val & 0xff))-min; | |
1902 | ucontrol->value.integer.value[1] = | |
1903 | ((signed char)((val >> 8) & 0xff))-min; | |
1904 | return 0; | |
1905 | } | |
1906 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8); | |
1907 | ||
1908 | /** | |
1909 | * snd_soc_put_volsw_sgn - signed mixer put callback | |
1910 | * @kcontrol: mixer control | |
1911 | * @uinfo: control element information | |
1912 | * | |
1913 | * Callback to set the value of a signed mixer control. | |
1914 | * | |
1915 | * Returns 0 for success. | |
1916 | */ | |
1917 | int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol, | |
1918 | struct snd_ctl_elem_value *ucontrol) | |
1919 | { | |
4eaa9819 JS |
1920 | struct soc_mixer_control *mc = |
1921 | (struct soc_mixer_control *)kcontrol->private_value; | |
e13ac2e9 | 1922 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d | 1923 | unsigned int reg = mc->reg; |
4eaa9819 | 1924 | int min = mc->min; |
e13ac2e9 MB |
1925 | unsigned short val; |
1926 | ||
1927 | val = (ucontrol->value.integer.value[0]+min) & 0xff; | |
1928 | val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8; | |
1929 | ||
1930 | return snd_soc_update_bits(codec, reg, 0xffff, val); | |
1931 | } | |
1932 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8); | |
1933 | ||
8c6529db LG |
1934 | /** |
1935 | * snd_soc_dai_set_sysclk - configure DAI system or master clock. | |
1936 | * @dai: DAI | |
1937 | * @clk_id: DAI specific clock ID | |
1938 | * @freq: new clock frequency in Hz | |
1939 | * @dir: new clock direction - input/output. | |
1940 | * | |
1941 | * Configures the DAI master (MCLK) or system (SYSCLK) clocking. | |
1942 | */ | |
1943 | int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id, | |
1944 | unsigned int freq, int dir) | |
1945 | { | |
dee89c4d MB |
1946 | if (dai->ops.set_sysclk) |
1947 | return dai->ops.set_sysclk(dai, clk_id, freq, dir); | |
8c6529db LG |
1948 | else |
1949 | return -EINVAL; | |
1950 | } | |
1951 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk); | |
1952 | ||
1953 | /** | |
1954 | * snd_soc_dai_set_clkdiv - configure DAI clock dividers. | |
1955 | * @dai: DAI | |
1956 | * @clk_id: DAI specific clock divider ID | |
1957 | * @div: new clock divisor. | |
1958 | * | |
1959 | * Configures the clock dividers. This is used to derive the best DAI bit and | |
1960 | * frame clocks from the system or master clock. It's best to set the DAI bit | |
1961 | * and frame clocks as low as possible to save system power. | |
1962 | */ | |
1963 | int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai, | |
1964 | int div_id, int div) | |
1965 | { | |
dee89c4d MB |
1966 | if (dai->ops.set_clkdiv) |
1967 | return dai->ops.set_clkdiv(dai, div_id, div); | |
8c6529db LG |
1968 | else |
1969 | return -EINVAL; | |
1970 | } | |
1971 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv); | |
1972 | ||
1973 | /** | |
1974 | * snd_soc_dai_set_pll - configure DAI PLL. | |
1975 | * @dai: DAI | |
1976 | * @pll_id: DAI specific PLL ID | |
1977 | * @freq_in: PLL input clock frequency in Hz | |
1978 | * @freq_out: requested PLL output clock frequency in Hz | |
1979 | * | |
1980 | * Configures and enables PLL to generate output clock based on input clock. | |
1981 | */ | |
1982 | int snd_soc_dai_set_pll(struct snd_soc_dai *dai, | |
1983 | int pll_id, unsigned int freq_in, unsigned int freq_out) | |
1984 | { | |
dee89c4d MB |
1985 | if (dai->ops.set_pll) |
1986 | return dai->ops.set_pll(dai, pll_id, freq_in, freq_out); | |
8c6529db LG |
1987 | else |
1988 | return -EINVAL; | |
1989 | } | |
1990 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll); | |
1991 | ||
1992 | /** | |
1993 | * snd_soc_dai_set_fmt - configure DAI hardware audio format. | |
1994 | * @dai: DAI | |
8c6529db LG |
1995 | * @fmt: SND_SOC_DAIFMT_ format value. |
1996 | * | |
1997 | * Configures the DAI hardware format and clocking. | |
1998 | */ | |
1999 | int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) | |
2000 | { | |
dee89c4d MB |
2001 | if (dai->ops.set_fmt) |
2002 | return dai->ops.set_fmt(dai, fmt); | |
8c6529db LG |
2003 | else |
2004 | return -EINVAL; | |
2005 | } | |
2006 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt); | |
2007 | ||
2008 | /** | |
2009 | * snd_soc_dai_set_tdm_slot - configure DAI TDM. | |
2010 | * @dai: DAI | |
2011 | * @mask: DAI specific mask representing used slots. | |
2012 | * @slots: Number of slots in use. | |
2013 | * | |
2014 | * Configures a DAI for TDM operation. Both mask and slots are codec and DAI | |
2015 | * specific. | |
2016 | */ | |
2017 | int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai, | |
2018 | unsigned int mask, int slots) | |
2019 | { | |
dee89c4d MB |
2020 | if (dai->ops.set_sysclk) |
2021 | return dai->ops.set_tdm_slot(dai, mask, slots); | |
8c6529db LG |
2022 | else |
2023 | return -EINVAL; | |
2024 | } | |
2025 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot); | |
2026 | ||
2027 | /** | |
2028 | * snd_soc_dai_set_tristate - configure DAI system or master clock. | |
2029 | * @dai: DAI | |
2030 | * @tristate: tristate enable | |
2031 | * | |
2032 | * Tristates the DAI so that others can use it. | |
2033 | */ | |
2034 | int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate) | |
2035 | { | |
dee89c4d MB |
2036 | if (dai->ops.set_sysclk) |
2037 | return dai->ops.set_tristate(dai, tristate); | |
8c6529db LG |
2038 | else |
2039 | return -EINVAL; | |
2040 | } | |
2041 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate); | |
2042 | ||
2043 | /** | |
2044 | * snd_soc_dai_digital_mute - configure DAI system or master clock. | |
2045 | * @dai: DAI | |
2046 | * @mute: mute enable | |
2047 | * | |
2048 | * Mutes the DAI DAC. | |
2049 | */ | |
2050 | int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute) | |
2051 | { | |
dee89c4d MB |
2052 | if (dai->ops.digital_mute) |
2053 | return dai->ops.digital_mute(dai, mute); | |
8c6529db LG |
2054 | else |
2055 | return -EINVAL; | |
2056 | } | |
2057 | EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute); | |
2058 | ||
c5af3a2e MB |
2059 | /** |
2060 | * snd_soc_register_card - Register a card with the ASoC core | |
2061 | * | |
2062 | * @param card Card to register | |
2063 | * | |
2064 | * Note that currently this is an internal only function: it will be | |
2065 | * exposed to machine drivers after further backporting of ASoC v2 | |
2066 | * registration APIs. | |
2067 | */ | |
2068 | static int snd_soc_register_card(struct snd_soc_card *card) | |
2069 | { | |
2070 | if (!card->name || !card->dev) | |
2071 | return -EINVAL; | |
2072 | ||
2073 | INIT_LIST_HEAD(&card->list); | |
2074 | card->instantiated = 0; | |
2075 | ||
2076 | mutex_lock(&client_mutex); | |
2077 | list_add(&card->list, &card_list); | |
435c5e25 | 2078 | snd_soc_instantiate_cards(); |
c5af3a2e MB |
2079 | mutex_unlock(&client_mutex); |
2080 | ||
2081 | dev_dbg(card->dev, "Registered card '%s'\n", card->name); | |
2082 | ||
2083 | return 0; | |
2084 | } | |
2085 | ||
2086 | /** | |
2087 | * snd_soc_unregister_card - Unregister a card with the ASoC core | |
2088 | * | |
2089 | * @param card Card to unregister | |
2090 | * | |
2091 | * Note that currently this is an internal only function: it will be | |
2092 | * exposed to machine drivers after further backporting of ASoC v2 | |
2093 | * registration APIs. | |
2094 | */ | |
2095 | static int snd_soc_unregister_card(struct snd_soc_card *card) | |
2096 | { | |
2097 | mutex_lock(&client_mutex); | |
2098 | list_del(&card->list); | |
2099 | mutex_unlock(&client_mutex); | |
2100 | ||
2101 | dev_dbg(card->dev, "Unregistered card '%s'\n", card->name); | |
2102 | ||
2103 | return 0; | |
2104 | } | |
2105 | ||
9115171a MB |
2106 | /** |
2107 | * snd_soc_register_dai - Register a DAI with the ASoC core | |
2108 | * | |
2109 | * @param dai DAI to register | |
2110 | */ | |
2111 | int snd_soc_register_dai(struct snd_soc_dai *dai) | |
2112 | { | |
2113 | if (!dai->name) | |
2114 | return -EINVAL; | |
2115 | ||
2116 | /* The device should become mandatory over time */ | |
2117 | if (!dai->dev) | |
2118 | printk(KERN_WARNING "No device for DAI %s\n", dai->name); | |
2119 | ||
2120 | INIT_LIST_HEAD(&dai->list); | |
2121 | ||
2122 | mutex_lock(&client_mutex); | |
2123 | list_add(&dai->list, &dai_list); | |
435c5e25 | 2124 | snd_soc_instantiate_cards(); |
9115171a MB |
2125 | mutex_unlock(&client_mutex); |
2126 | ||
2127 | pr_debug("Registered DAI '%s'\n", dai->name); | |
2128 | ||
2129 | return 0; | |
2130 | } | |
2131 | EXPORT_SYMBOL_GPL(snd_soc_register_dai); | |
2132 | ||
2133 | /** | |
2134 | * snd_soc_unregister_dai - Unregister a DAI from the ASoC core | |
2135 | * | |
2136 | * @param dai DAI to unregister | |
2137 | */ | |
2138 | void snd_soc_unregister_dai(struct snd_soc_dai *dai) | |
2139 | { | |
2140 | mutex_lock(&client_mutex); | |
2141 | list_del(&dai->list); | |
2142 | mutex_unlock(&client_mutex); | |
2143 | ||
2144 | pr_debug("Unregistered DAI '%s'\n", dai->name); | |
2145 | } | |
2146 | EXPORT_SYMBOL_GPL(snd_soc_unregister_dai); | |
2147 | ||
2148 | /** | |
2149 | * snd_soc_register_dais - Register multiple DAIs with the ASoC core | |
2150 | * | |
2151 | * @param dai Array of DAIs to register | |
2152 | * @param count Number of DAIs | |
2153 | */ | |
2154 | int snd_soc_register_dais(struct snd_soc_dai *dai, size_t count) | |
2155 | { | |
2156 | int i, ret; | |
2157 | ||
2158 | for (i = 0; i < count; i++) { | |
2159 | ret = snd_soc_register_dai(&dai[i]); | |
2160 | if (ret != 0) | |
2161 | goto err; | |
2162 | } | |
2163 | ||
2164 | return 0; | |
2165 | ||
2166 | err: | |
2167 | for (i--; i >= 0; i--) | |
2168 | snd_soc_unregister_dai(&dai[i]); | |
2169 | ||
2170 | return ret; | |
2171 | } | |
2172 | EXPORT_SYMBOL_GPL(snd_soc_register_dais); | |
2173 | ||
2174 | /** | |
2175 | * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core | |
2176 | * | |
2177 | * @param dai Array of DAIs to unregister | |
2178 | * @param count Number of DAIs | |
2179 | */ | |
2180 | void snd_soc_unregister_dais(struct snd_soc_dai *dai, size_t count) | |
2181 | { | |
2182 | int i; | |
2183 | ||
2184 | for (i = 0; i < count; i++) | |
2185 | snd_soc_unregister_dai(&dai[i]); | |
2186 | } | |
2187 | EXPORT_SYMBOL_GPL(snd_soc_unregister_dais); | |
2188 | ||
12a48a8c MB |
2189 | /** |
2190 | * snd_soc_register_platform - Register a platform with the ASoC core | |
2191 | * | |
2192 | * @param platform platform to register | |
2193 | */ | |
2194 | int snd_soc_register_platform(struct snd_soc_platform *platform) | |
2195 | { | |
2196 | if (!platform->name) | |
2197 | return -EINVAL; | |
2198 | ||
2199 | INIT_LIST_HEAD(&platform->list); | |
2200 | ||
2201 | mutex_lock(&client_mutex); | |
2202 | list_add(&platform->list, &platform_list); | |
435c5e25 | 2203 | snd_soc_instantiate_cards(); |
12a48a8c MB |
2204 | mutex_unlock(&client_mutex); |
2205 | ||
2206 | pr_debug("Registered platform '%s'\n", platform->name); | |
2207 | ||
2208 | return 0; | |
2209 | } | |
2210 | EXPORT_SYMBOL_GPL(snd_soc_register_platform); | |
2211 | ||
2212 | /** | |
2213 | * snd_soc_unregister_platform - Unregister a platform from the ASoC core | |
2214 | * | |
2215 | * @param platform platform to unregister | |
2216 | */ | |
2217 | void snd_soc_unregister_platform(struct snd_soc_platform *platform) | |
2218 | { | |
2219 | mutex_lock(&client_mutex); | |
2220 | list_del(&platform->list); | |
2221 | mutex_unlock(&client_mutex); | |
2222 | ||
2223 | pr_debug("Unregistered platform '%s'\n", platform->name); | |
2224 | } | |
2225 | EXPORT_SYMBOL_GPL(snd_soc_unregister_platform); | |
2226 | ||
db2a4165 FM |
2227 | static int __devinit snd_soc_init(void) |
2228 | { | |
384c89e2 MB |
2229 | #ifdef CONFIG_DEBUG_FS |
2230 | debugfs_root = debugfs_create_dir("asoc", NULL); | |
2231 | if (IS_ERR(debugfs_root) || !debugfs_root) { | |
2232 | printk(KERN_WARNING | |
2233 | "ASoC: Failed to create debugfs directory\n"); | |
2234 | debugfs_root = NULL; | |
2235 | } | |
2236 | #endif | |
2237 | ||
db2a4165 FM |
2238 | return platform_driver_register(&soc_driver); |
2239 | } | |
2240 | ||
7d8c16a6 | 2241 | static void __exit snd_soc_exit(void) |
db2a4165 | 2242 | { |
384c89e2 MB |
2243 | #ifdef CONFIG_DEBUG_FS |
2244 | debugfs_remove_recursive(debugfs_root); | |
2245 | #endif | |
3ff3f64b | 2246 | platform_driver_unregister(&soc_driver); |
db2a4165 FM |
2247 | } |
2248 | ||
2249 | module_init(snd_soc_init); | |
2250 | module_exit(snd_soc_exit); | |
2251 | ||
2252 | /* Module information */ | |
d331124d | 2253 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
db2a4165 FM |
2254 | MODULE_DESCRIPTION("ALSA SoC Core"); |
2255 | MODULE_LICENSE("GPL"); | |
8b45a209 | 2256 | MODULE_ALIAS("platform:soc-audio"); |