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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); |
0d0cf00a | 50 | static LIST_HEAD(codec_list); |
c5af3a2e MB |
51 | |
52 | static int snd_soc_register_card(struct snd_soc_card *card); | |
53 | static int snd_soc_unregister_card(struct snd_soc_card *card); | |
54 | ||
db2a4165 FM |
55 | /* |
56 | * This is a timeout to do a DAPM powerdown after a stream is closed(). | |
57 | * It can be used to eliminate pops between different playback streams, e.g. | |
58 | * between two audio tracks. | |
59 | */ | |
60 | static int pmdown_time = 5000; | |
61 | module_param(pmdown_time, int, 0); | |
62 | MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)"); | |
63 | ||
965ac42c LG |
64 | /* |
65 | * This function forces any delayed work to be queued and run. | |
66 | */ | |
67 | static int run_delayed_work(struct delayed_work *dwork) | |
68 | { | |
69 | int ret; | |
70 | ||
71 | /* cancel any work waiting to be queued. */ | |
72 | ret = cancel_delayed_work(dwork); | |
73 | ||
74 | /* if there was any work waiting then we run it now and | |
75 | * wait for it's completion */ | |
76 | if (ret) { | |
77 | schedule_delayed_work(dwork, 0); | |
78 | flush_scheduled_work(); | |
79 | } | |
80 | return ret; | |
81 | } | |
82 | ||
db2a4165 FM |
83 | #ifdef CONFIG_SND_SOC_AC97_BUS |
84 | /* unregister ac97 codec */ | |
85 | static int soc_ac97_dev_unregister(struct snd_soc_codec *codec) | |
86 | { | |
87 | if (codec->ac97->dev.bus) | |
88 | device_unregister(&codec->ac97->dev); | |
89 | return 0; | |
90 | } | |
91 | ||
92 | /* stop no dev release warning */ | |
93 | static void soc_ac97_device_release(struct device *dev){} | |
94 | ||
95 | /* register ac97 codec to bus */ | |
96 | static int soc_ac97_dev_register(struct snd_soc_codec *codec) | |
97 | { | |
98 | int err; | |
99 | ||
100 | codec->ac97->dev.bus = &ac97_bus_type; | |
101 | codec->ac97->dev.parent = NULL; | |
102 | codec->ac97->dev.release = soc_ac97_device_release; | |
103 | ||
bb072bf0 KS |
104 | dev_set_name(&codec->ac97->dev, "%d-%d:%s", |
105 | codec->card->number, 0, codec->name); | |
db2a4165 FM |
106 | err = device_register(&codec->ac97->dev); |
107 | if (err < 0) { | |
108 | snd_printk(KERN_ERR "Can't register ac97 bus\n"); | |
109 | codec->ac97->dev.bus = NULL; | |
110 | return err; | |
111 | } | |
112 | return 0; | |
113 | } | |
114 | #endif | |
115 | ||
db2a4165 FM |
116 | /* |
117 | * Called by ALSA when a PCM substream is opened, the runtime->hw record is | |
118 | * then initialized and any private data can be allocated. This also calls | |
119 | * startup for the cpu DAI, platform, machine and codec DAI. | |
120 | */ | |
121 | static int soc_pcm_open(struct snd_pcm_substream *substream) | |
122 | { | |
123 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
124 | struct snd_soc_device *socdev = rtd->socdev; | |
87689d56 | 125 | struct snd_soc_card *card = socdev->card; |
db2a4165 | 126 | struct snd_pcm_runtime *runtime = substream->runtime; |
cb666e5b | 127 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 | 128 | struct snd_soc_platform *platform = card->platform; |
3c4b266f LG |
129 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
130 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
131 | int ret = 0; |
132 | ||
133 | mutex_lock(&pcm_mutex); | |
134 | ||
135 | /* startup the audio subsystem */ | |
cb666e5b | 136 | if (cpu_dai->ops.startup) { |
dee89c4d | 137 | ret = cpu_dai->ops.startup(substream, cpu_dai); |
db2a4165 FM |
138 | if (ret < 0) { |
139 | printk(KERN_ERR "asoc: can't open interface %s\n", | |
cb666e5b | 140 | cpu_dai->name); |
db2a4165 FM |
141 | goto out; |
142 | } | |
143 | } | |
144 | ||
145 | if (platform->pcm_ops->open) { | |
146 | ret = platform->pcm_ops->open(substream); | |
147 | if (ret < 0) { | |
148 | printk(KERN_ERR "asoc: can't open platform %s\n", platform->name); | |
149 | goto platform_err; | |
150 | } | |
151 | } | |
152 | ||
cb666e5b | 153 | if (codec_dai->ops.startup) { |
dee89c4d | 154 | ret = codec_dai->ops.startup(substream, codec_dai); |
db2a4165 | 155 | if (ret < 0) { |
cb666e5b LG |
156 | printk(KERN_ERR "asoc: can't open codec %s\n", |
157 | codec_dai->name); | |
158 | goto codec_dai_err; | |
db2a4165 FM |
159 | } |
160 | } | |
161 | ||
cb666e5b LG |
162 | if (machine->ops && machine->ops->startup) { |
163 | ret = machine->ops->startup(substream); | |
db2a4165 | 164 | if (ret < 0) { |
cb666e5b LG |
165 | printk(KERN_ERR "asoc: %s startup failed\n", machine->name); |
166 | goto machine_err; | |
db2a4165 FM |
167 | } |
168 | } | |
169 | ||
db2a4165 FM |
170 | /* Check that the codec and cpu DAI's are compatible */ |
171 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
172 | runtime->hw.rate_min = | |
3ff3f64b MB |
173 | max(codec_dai->playback.rate_min, |
174 | cpu_dai->playback.rate_min); | |
db2a4165 | 175 | runtime->hw.rate_max = |
3ff3f64b MB |
176 | min(codec_dai->playback.rate_max, |
177 | cpu_dai->playback.rate_max); | |
db2a4165 | 178 | runtime->hw.channels_min = |
cb666e5b LG |
179 | max(codec_dai->playback.channels_min, |
180 | cpu_dai->playback.channels_min); | |
db2a4165 | 181 | runtime->hw.channels_max = |
cb666e5b LG |
182 | min(codec_dai->playback.channels_max, |
183 | cpu_dai->playback.channels_max); | |
184 | runtime->hw.formats = | |
185 | codec_dai->playback.formats & cpu_dai->playback.formats; | |
186 | runtime->hw.rates = | |
187 | codec_dai->playback.rates & cpu_dai->playback.rates; | |
db2a4165 FM |
188 | } else { |
189 | runtime->hw.rate_min = | |
3ff3f64b MB |
190 | max(codec_dai->capture.rate_min, |
191 | cpu_dai->capture.rate_min); | |
db2a4165 | 192 | runtime->hw.rate_max = |
3ff3f64b MB |
193 | min(codec_dai->capture.rate_max, |
194 | cpu_dai->capture.rate_max); | |
db2a4165 | 195 | runtime->hw.channels_min = |
cb666e5b LG |
196 | max(codec_dai->capture.channels_min, |
197 | cpu_dai->capture.channels_min); | |
db2a4165 | 198 | runtime->hw.channels_max = |
cb666e5b LG |
199 | min(codec_dai->capture.channels_max, |
200 | cpu_dai->capture.channels_max); | |
201 | runtime->hw.formats = | |
202 | codec_dai->capture.formats & cpu_dai->capture.formats; | |
203 | runtime->hw.rates = | |
204 | codec_dai->capture.rates & cpu_dai->capture.rates; | |
db2a4165 FM |
205 | } |
206 | ||
207 | snd_pcm_limit_hw_rates(runtime); | |
208 | if (!runtime->hw.rates) { | |
209 | printk(KERN_ERR "asoc: %s <-> %s No matching rates\n", | |
cb666e5b LG |
210 | codec_dai->name, cpu_dai->name); |
211 | goto machine_err; | |
db2a4165 FM |
212 | } |
213 | if (!runtime->hw.formats) { | |
214 | printk(KERN_ERR "asoc: %s <-> %s No matching formats\n", | |
cb666e5b LG |
215 | codec_dai->name, cpu_dai->name); |
216 | goto machine_err; | |
db2a4165 FM |
217 | } |
218 | if (!runtime->hw.channels_min || !runtime->hw.channels_max) { | |
219 | printk(KERN_ERR "asoc: %s <-> %s No matching channels\n", | |
cb666e5b LG |
220 | codec_dai->name, cpu_dai->name); |
221 | goto machine_err; | |
db2a4165 FM |
222 | } |
223 | ||
f24368c2 MB |
224 | pr_debug("asoc: %s <-> %s info:\n", codec_dai->name, cpu_dai->name); |
225 | pr_debug("asoc: rate mask 0x%x\n", runtime->hw.rates); | |
226 | pr_debug("asoc: min ch %d max ch %d\n", runtime->hw.channels_min, | |
227 | runtime->hw.channels_max); | |
228 | pr_debug("asoc: min rate %d max rate %d\n", runtime->hw.rate_min, | |
229 | runtime->hw.rate_max); | |
db2a4165 | 230 | |
db2a4165 | 231 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
cb666e5b | 232 | cpu_dai->playback.active = codec_dai->playback.active = 1; |
db2a4165 | 233 | else |
cb666e5b LG |
234 | cpu_dai->capture.active = codec_dai->capture.active = 1; |
235 | cpu_dai->active = codec_dai->active = 1; | |
236 | cpu_dai->runtime = runtime; | |
db2a4165 FM |
237 | socdev->codec->active++; |
238 | mutex_unlock(&pcm_mutex); | |
239 | return 0; | |
240 | ||
cb666e5b | 241 | machine_err: |
db2a4165 FM |
242 | if (machine->ops && machine->ops->shutdown) |
243 | machine->ops->shutdown(substream); | |
244 | ||
cb666e5b | 245 | codec_dai_err: |
db2a4165 FM |
246 | if (platform->pcm_ops->close) |
247 | platform->pcm_ops->close(substream); | |
248 | ||
249 | platform_err: | |
cb666e5b | 250 | if (cpu_dai->ops.shutdown) |
dee89c4d | 251 | cpu_dai->ops.shutdown(substream, cpu_dai); |
db2a4165 FM |
252 | out: |
253 | mutex_unlock(&pcm_mutex); | |
254 | return ret; | |
255 | } | |
256 | ||
257 | /* | |
3a4fa0a2 | 258 | * Power down the audio subsystem pmdown_time msecs after close is called. |
db2a4165 FM |
259 | * This is to ensure there are no pops or clicks in between any music tracks |
260 | * due to DAPM power cycling. | |
261 | */ | |
4484bb2e | 262 | static void close_delayed_work(struct work_struct *work) |
db2a4165 | 263 | { |
6308419a MB |
264 | struct snd_soc_card *card = container_of(work, struct snd_soc_card, |
265 | delayed_work.work); | |
266 | struct snd_soc_device *socdev = card->socdev; | |
db2a4165 | 267 | struct snd_soc_codec *codec = socdev->codec; |
3c4b266f | 268 | struct snd_soc_dai *codec_dai; |
db2a4165 FM |
269 | int i; |
270 | ||
271 | mutex_lock(&pcm_mutex); | |
3ff3f64b | 272 | for (i = 0; i < codec->num_dai; i++) { |
db2a4165 FM |
273 | codec_dai = &codec->dai[i]; |
274 | ||
f24368c2 MB |
275 | pr_debug("pop wq checking: %s status: %s waiting: %s\n", |
276 | codec_dai->playback.stream_name, | |
277 | codec_dai->playback.active ? "active" : "inactive", | |
278 | codec_dai->pop_wait ? "yes" : "no"); | |
db2a4165 FM |
279 | |
280 | /* are we waiting on this codec DAI stream */ | |
281 | if (codec_dai->pop_wait == 1) { | |
282 | ||
0be9898a | 283 | /* Reduce power if no longer active */ |
3c1c47e0 | 284 | if (codec->active == 0) { |
f24368c2 MB |
285 | pr_debug("pop wq D1 %s %s\n", codec->name, |
286 | codec_dai->playback.stream_name); | |
0be9898a MB |
287 | snd_soc_dapm_set_bias_level(socdev, |
288 | SND_SOC_BIAS_PREPARE); | |
3c1c47e0 LG |
289 | } |
290 | ||
db2a4165 | 291 | codec_dai->pop_wait = 0; |
0b4d221b LG |
292 | snd_soc_dapm_stream_event(codec, |
293 | codec_dai->playback.stream_name, | |
db2a4165 FM |
294 | SND_SOC_DAPM_STREAM_STOP); |
295 | ||
0be9898a | 296 | /* Fall into standby if no longer active */ |
db2a4165 | 297 | if (codec->active == 0) { |
f24368c2 MB |
298 | pr_debug("pop wq D3 %s %s\n", codec->name, |
299 | codec_dai->playback.stream_name); | |
0be9898a MB |
300 | snd_soc_dapm_set_bias_level(socdev, |
301 | SND_SOC_BIAS_STANDBY); | |
db2a4165 FM |
302 | } |
303 | } | |
304 | } | |
305 | mutex_unlock(&pcm_mutex); | |
306 | } | |
307 | ||
308 | /* | |
309 | * Called by ALSA when a PCM substream is closed. Private data can be | |
310 | * freed here. The cpu DAI, codec DAI, machine and platform are also | |
311 | * shutdown. | |
312 | */ | |
313 | static int soc_codec_close(struct snd_pcm_substream *substream) | |
314 | { | |
315 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
316 | struct snd_soc_device *socdev = rtd->socdev; | |
6308419a | 317 | struct snd_soc_card *card = socdev->card; |
cb666e5b | 318 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 | 319 | struct snd_soc_platform *platform = card->platform; |
3c4b266f LG |
320 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
321 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
322 | struct snd_soc_codec *codec = socdev->codec; |
323 | ||
324 | mutex_lock(&pcm_mutex); | |
325 | ||
326 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
cb666e5b | 327 | cpu_dai->playback.active = codec_dai->playback.active = 0; |
db2a4165 | 328 | else |
cb666e5b | 329 | cpu_dai->capture.active = codec_dai->capture.active = 0; |
db2a4165 | 330 | |
cb666e5b LG |
331 | if (codec_dai->playback.active == 0 && |
332 | codec_dai->capture.active == 0) { | |
333 | cpu_dai->active = codec_dai->active = 0; | |
db2a4165 FM |
334 | } |
335 | codec->active--; | |
336 | ||
6010b2da MB |
337 | /* Muting the DAC suppresses artifacts caused during digital |
338 | * shutdown, for example from stopping clocks. | |
339 | */ | |
340 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
341 | snd_soc_dai_digital_mute(codec_dai, 1); | |
342 | ||
cb666e5b | 343 | if (cpu_dai->ops.shutdown) |
dee89c4d | 344 | cpu_dai->ops.shutdown(substream, cpu_dai); |
db2a4165 | 345 | |
cb666e5b | 346 | if (codec_dai->ops.shutdown) |
dee89c4d | 347 | codec_dai->ops.shutdown(substream, codec_dai); |
db2a4165 FM |
348 | |
349 | if (machine->ops && machine->ops->shutdown) | |
350 | machine->ops->shutdown(substream); | |
351 | ||
352 | if (platform->pcm_ops->close) | |
353 | platform->pcm_ops->close(substream); | |
cb666e5b | 354 | cpu_dai->runtime = NULL; |
db2a4165 FM |
355 | |
356 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
357 | /* start delayed pop wq here for playback streams */ | |
cb666e5b | 358 | codec_dai->pop_wait = 1; |
6308419a | 359 | schedule_delayed_work(&card->delayed_work, |
db2a4165 FM |
360 | msecs_to_jiffies(pmdown_time)); |
361 | } else { | |
362 | /* capture streams can be powered down now */ | |
cb666e5b | 363 | snd_soc_dapm_stream_event(codec, |
0b4d221b LG |
364 | codec_dai->capture.stream_name, |
365 | SND_SOC_DAPM_STREAM_STOP); | |
db2a4165 | 366 | |
0b4d221b | 367 | if (codec->active == 0 && codec_dai->pop_wait == 0) |
0be9898a MB |
368 | snd_soc_dapm_set_bias_level(socdev, |
369 | SND_SOC_BIAS_STANDBY); | |
db2a4165 FM |
370 | } |
371 | ||
372 | mutex_unlock(&pcm_mutex); | |
373 | return 0; | |
374 | } | |
375 | ||
376 | /* | |
377 | * Called by ALSA when the PCM substream is prepared, can set format, sample | |
378 | * rate, etc. This function is non atomic and can be called multiple times, | |
379 | * it can refer to the runtime info. | |
380 | */ | |
381 | static int soc_pcm_prepare(struct snd_pcm_substream *substream) | |
382 | { | |
383 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
384 | struct snd_soc_device *socdev = rtd->socdev; | |
6308419a | 385 | struct snd_soc_card *card = socdev->card; |
cb666e5b | 386 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 | 387 | struct snd_soc_platform *platform = card->platform; |
3c4b266f LG |
388 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
389 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
390 | struct snd_soc_codec *codec = socdev->codec; |
391 | int ret = 0; | |
392 | ||
393 | mutex_lock(&pcm_mutex); | |
cb666e5b LG |
394 | |
395 | if (machine->ops && machine->ops->prepare) { | |
396 | ret = machine->ops->prepare(substream); | |
397 | if (ret < 0) { | |
398 | printk(KERN_ERR "asoc: machine prepare error\n"); | |
399 | goto out; | |
400 | } | |
401 | } | |
402 | ||
db2a4165 FM |
403 | if (platform->pcm_ops->prepare) { |
404 | ret = platform->pcm_ops->prepare(substream); | |
a71a468a LG |
405 | if (ret < 0) { |
406 | printk(KERN_ERR "asoc: platform prepare error\n"); | |
db2a4165 | 407 | goto out; |
a71a468a | 408 | } |
db2a4165 FM |
409 | } |
410 | ||
cb666e5b | 411 | if (codec_dai->ops.prepare) { |
dee89c4d | 412 | ret = codec_dai->ops.prepare(substream, codec_dai); |
a71a468a LG |
413 | if (ret < 0) { |
414 | printk(KERN_ERR "asoc: codec DAI prepare error\n"); | |
db2a4165 | 415 | goto out; |
a71a468a | 416 | } |
db2a4165 FM |
417 | } |
418 | ||
cb666e5b | 419 | if (cpu_dai->ops.prepare) { |
dee89c4d | 420 | ret = cpu_dai->ops.prepare(substream, cpu_dai); |
cb666e5b LG |
421 | if (ret < 0) { |
422 | printk(KERN_ERR "asoc: cpu DAI prepare error\n"); | |
423 | goto out; | |
424 | } | |
425 | } | |
db2a4165 | 426 | |
d45f6219 MB |
427 | /* cancel any delayed stream shutdown that is pending */ |
428 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
429 | codec_dai->pop_wait) { | |
430 | codec_dai->pop_wait = 0; | |
6308419a | 431 | cancel_delayed_work(&card->delayed_work); |
d45f6219 | 432 | } |
db2a4165 | 433 | |
d45f6219 MB |
434 | /* do we need to power up codec */ |
435 | if (codec->bias_level != SND_SOC_BIAS_ON) { | |
436 | snd_soc_dapm_set_bias_level(socdev, | |
437 | SND_SOC_BIAS_PREPARE); | |
db2a4165 | 438 | |
d45f6219 MB |
439 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
440 | snd_soc_dapm_stream_event(codec, | |
cb666e5b | 441 | codec_dai->playback.stream_name, |
db2a4165 | 442 | SND_SOC_DAPM_STREAM_START); |
d45f6219 MB |
443 | else |
444 | snd_soc_dapm_stream_event(codec, | |
cb666e5b | 445 | codec_dai->capture.stream_name, |
db2a4165 FM |
446 | SND_SOC_DAPM_STREAM_START); |
447 | ||
d45f6219 MB |
448 | snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_ON); |
449 | snd_soc_dai_digital_mute(codec_dai, 0); | |
db2a4165 | 450 | |
d45f6219 MB |
451 | } else { |
452 | /* codec already powered - power on widgets */ | |
453 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
454 | snd_soc_dapm_stream_event(codec, | |
cb666e5b | 455 | codec_dai->playback.stream_name, |
db2a4165 | 456 | SND_SOC_DAPM_STREAM_START); |
d45f6219 MB |
457 | else |
458 | snd_soc_dapm_stream_event(codec, | |
cb666e5b | 459 | codec_dai->capture.stream_name, |
db2a4165 | 460 | SND_SOC_DAPM_STREAM_START); |
8c6529db | 461 | |
d45f6219 | 462 | snd_soc_dai_digital_mute(codec_dai, 0); |
db2a4165 FM |
463 | } |
464 | ||
465 | out: | |
466 | mutex_unlock(&pcm_mutex); | |
467 | return ret; | |
468 | } | |
469 | ||
470 | /* | |
471 | * Called by ALSA when the hardware params are set by application. This | |
472 | * function can also be called multiple times and can allocate buffers | |
473 | * (using snd_pcm_lib_* ). It's non-atomic. | |
474 | */ | |
475 | static int soc_pcm_hw_params(struct snd_pcm_substream *substream, | |
476 | struct snd_pcm_hw_params *params) | |
477 | { | |
478 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
479 | struct snd_soc_device *socdev = rtd->socdev; | |
cb666e5b | 480 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 MB |
481 | struct snd_soc_card *card = socdev->card; |
482 | struct snd_soc_platform *platform = card->platform; | |
3c4b266f LG |
483 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
484 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
485 | int ret = 0; |
486 | ||
487 | mutex_lock(&pcm_mutex); | |
488 | ||
cb666e5b LG |
489 | if (machine->ops && machine->ops->hw_params) { |
490 | ret = machine->ops->hw_params(substream, params); | |
491 | if (ret < 0) { | |
492 | printk(KERN_ERR "asoc: machine hw_params failed\n"); | |
db2a4165 | 493 | goto out; |
cb666e5b | 494 | } |
db2a4165 FM |
495 | } |
496 | ||
cb666e5b | 497 | if (codec_dai->ops.hw_params) { |
dee89c4d | 498 | ret = codec_dai->ops.hw_params(substream, params, codec_dai); |
db2a4165 FM |
499 | if (ret < 0) { |
500 | printk(KERN_ERR "asoc: can't set codec %s hw params\n", | |
cb666e5b LG |
501 | codec_dai->name); |
502 | goto codec_err; | |
db2a4165 FM |
503 | } |
504 | } | |
505 | ||
cb666e5b | 506 | if (cpu_dai->ops.hw_params) { |
dee89c4d | 507 | ret = cpu_dai->ops.hw_params(substream, params, cpu_dai); |
db2a4165 | 508 | if (ret < 0) { |
3ff3f64b | 509 | printk(KERN_ERR "asoc: interface %s hw params failed\n", |
cb666e5b | 510 | cpu_dai->name); |
db2a4165 FM |
511 | goto interface_err; |
512 | } | |
513 | } | |
514 | ||
515 | if (platform->pcm_ops->hw_params) { | |
516 | ret = platform->pcm_ops->hw_params(substream, params); | |
517 | if (ret < 0) { | |
3ff3f64b | 518 | printk(KERN_ERR "asoc: platform %s hw params failed\n", |
db2a4165 FM |
519 | platform->name); |
520 | goto platform_err; | |
521 | } | |
522 | } | |
523 | ||
db2a4165 FM |
524 | out: |
525 | mutex_unlock(&pcm_mutex); | |
526 | return ret; | |
527 | ||
db2a4165 | 528 | platform_err: |
cb666e5b | 529 | if (cpu_dai->ops.hw_free) |
dee89c4d | 530 | cpu_dai->ops.hw_free(substream, cpu_dai); |
db2a4165 FM |
531 | |
532 | interface_err: | |
cb666e5b | 533 | if (codec_dai->ops.hw_free) |
dee89c4d | 534 | codec_dai->ops.hw_free(substream, codec_dai); |
cb666e5b LG |
535 | |
536 | codec_err: | |
3ff3f64b | 537 | if (machine->ops && machine->ops->hw_free) |
cb666e5b | 538 | machine->ops->hw_free(substream); |
db2a4165 FM |
539 | |
540 | mutex_unlock(&pcm_mutex); | |
541 | return ret; | |
542 | } | |
543 | ||
544 | /* | |
545 | * Free's resources allocated by hw_params, can be called multiple times | |
546 | */ | |
547 | static int soc_pcm_hw_free(struct snd_pcm_substream *substream) | |
548 | { | |
549 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
550 | struct snd_soc_device *socdev = rtd->socdev; | |
cb666e5b | 551 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 MB |
552 | struct snd_soc_card *card = socdev->card; |
553 | struct snd_soc_platform *platform = card->platform; | |
3c4b266f LG |
554 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
555 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 | 556 | struct snd_soc_codec *codec = socdev->codec; |
db2a4165 FM |
557 | |
558 | mutex_lock(&pcm_mutex); | |
559 | ||
560 | /* apply codec digital mute */ | |
8c6529db LG |
561 | if (!codec->active) |
562 | snd_soc_dai_digital_mute(codec_dai, 1); | |
db2a4165 FM |
563 | |
564 | /* free any machine hw params */ | |
565 | if (machine->ops && machine->ops->hw_free) | |
566 | machine->ops->hw_free(substream); | |
567 | ||
568 | /* free any DMA resources */ | |
569 | if (platform->pcm_ops->hw_free) | |
570 | platform->pcm_ops->hw_free(substream); | |
571 | ||
572 | /* now free hw params for the DAI's */ | |
cb666e5b | 573 | if (codec_dai->ops.hw_free) |
dee89c4d | 574 | codec_dai->ops.hw_free(substream, codec_dai); |
db2a4165 | 575 | |
cb666e5b | 576 | if (cpu_dai->ops.hw_free) |
dee89c4d | 577 | cpu_dai->ops.hw_free(substream, cpu_dai); |
db2a4165 FM |
578 | |
579 | mutex_unlock(&pcm_mutex); | |
580 | return 0; | |
581 | } | |
582 | ||
583 | static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd) | |
584 | { | |
585 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
586 | struct snd_soc_device *socdev = rtd->socdev; | |
87689d56 | 587 | struct snd_soc_card *card= socdev->card; |
cb666e5b | 588 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 | 589 | struct snd_soc_platform *platform = card->platform; |
3c4b266f LG |
590 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
591 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
592 | int ret; |
593 | ||
cb666e5b | 594 | if (codec_dai->ops.trigger) { |
dee89c4d | 595 | ret = codec_dai->ops.trigger(substream, cmd, codec_dai); |
db2a4165 FM |
596 | if (ret < 0) |
597 | return ret; | |
598 | } | |
599 | ||
600 | if (platform->pcm_ops->trigger) { | |
601 | ret = platform->pcm_ops->trigger(substream, cmd); | |
602 | if (ret < 0) | |
603 | return ret; | |
604 | } | |
605 | ||
cb666e5b | 606 | if (cpu_dai->ops.trigger) { |
dee89c4d | 607 | ret = cpu_dai->ops.trigger(substream, cmd, cpu_dai); |
db2a4165 FM |
608 | if (ret < 0) |
609 | return ret; | |
610 | } | |
611 | return 0; | |
612 | } | |
613 | ||
614 | /* ASoC PCM operations */ | |
615 | static struct snd_pcm_ops soc_pcm_ops = { | |
616 | .open = soc_pcm_open, | |
617 | .close = soc_codec_close, | |
618 | .hw_params = soc_pcm_hw_params, | |
619 | .hw_free = soc_pcm_hw_free, | |
620 | .prepare = soc_pcm_prepare, | |
621 | .trigger = soc_pcm_trigger, | |
622 | }; | |
623 | ||
624 | #ifdef CONFIG_PM | |
625 | /* powers down audio subsystem for suspend */ | |
626 | static int soc_suspend(struct platform_device *pdev, pm_message_t state) | |
627 | { | |
3ff3f64b | 628 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
87506549 | 629 | struct snd_soc_card *card = socdev->card; |
87689d56 | 630 | struct snd_soc_platform *platform = card->platform; |
3ff3f64b | 631 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; |
db2a4165 FM |
632 | struct snd_soc_codec *codec = socdev->codec; |
633 | int i; | |
634 | ||
6ed25978 AG |
635 | /* Due to the resume being scheduled into a workqueue we could |
636 | * suspend before that's finished - wait for it to complete. | |
637 | */ | |
638 | snd_power_lock(codec->card); | |
639 | snd_power_wait(codec->card, SNDRV_CTL_POWER_D0); | |
640 | snd_power_unlock(codec->card); | |
641 | ||
642 | /* we're going to block userspace touching us until resume completes */ | |
643 | snd_power_change_state(codec->card, SNDRV_CTL_POWER_D3hot); | |
644 | ||
db2a4165 | 645 | /* mute any active DAC's */ |
dee89c4d MB |
646 | for (i = 0; i < card->num_links; i++) { |
647 | struct snd_soc_dai *dai = card->dai_link[i].codec_dai; | |
648 | if (dai->ops.digital_mute && dai->playback.active) | |
649 | dai->ops.digital_mute(dai, 1); | |
db2a4165 FM |
650 | } |
651 | ||
4ccab3e7 | 652 | /* suspend all pcms */ |
87506549 MB |
653 | for (i = 0; i < card->num_links; i++) |
654 | snd_pcm_suspend_all(card->dai_link[i].pcm); | |
4ccab3e7 | 655 | |
87506549 MB |
656 | if (card->suspend_pre) |
657 | card->suspend_pre(pdev, state); | |
db2a4165 | 658 | |
87506549 MB |
659 | for (i = 0; i < card->num_links; i++) { |
660 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
3ba9e10a | 661 | if (cpu_dai->suspend && !cpu_dai->ac97_control) |
dc7d7b83 | 662 | cpu_dai->suspend(cpu_dai); |
db2a4165 | 663 | if (platform->suspend) |
07c84d04 | 664 | platform->suspend(cpu_dai); |
db2a4165 FM |
665 | } |
666 | ||
667 | /* close any waiting streams and save state */ | |
6308419a | 668 | run_delayed_work(&card->delayed_work); |
0be9898a | 669 | codec->suspend_bias_level = codec->bias_level; |
db2a4165 | 670 | |
3ff3f64b | 671 | for (i = 0; i < codec->num_dai; i++) { |
db2a4165 FM |
672 | char *stream = codec->dai[i].playback.stream_name; |
673 | if (stream != NULL) | |
674 | snd_soc_dapm_stream_event(codec, stream, | |
675 | SND_SOC_DAPM_STREAM_SUSPEND); | |
676 | stream = codec->dai[i].capture.stream_name; | |
677 | if (stream != NULL) | |
678 | snd_soc_dapm_stream_event(codec, stream, | |
679 | SND_SOC_DAPM_STREAM_SUSPEND); | |
680 | } | |
681 | ||
682 | if (codec_dev->suspend) | |
683 | codec_dev->suspend(pdev, state); | |
684 | ||
87506549 MB |
685 | for (i = 0; i < card->num_links; i++) { |
686 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
3ba9e10a | 687 | if (cpu_dai->suspend && cpu_dai->ac97_control) |
dc7d7b83 | 688 | cpu_dai->suspend(cpu_dai); |
db2a4165 FM |
689 | } |
690 | ||
87506549 MB |
691 | if (card->suspend_post) |
692 | card->suspend_post(pdev, state); | |
db2a4165 FM |
693 | |
694 | return 0; | |
695 | } | |
696 | ||
6ed25978 AG |
697 | /* deferred resume work, so resume can complete before we finished |
698 | * setting our codec back up, which can be very slow on I2C | |
699 | */ | |
700 | static void soc_resume_deferred(struct work_struct *work) | |
db2a4165 | 701 | { |
6308419a MB |
702 | struct snd_soc_card *card = container_of(work, |
703 | struct snd_soc_card, | |
704 | deferred_resume_work); | |
705 | struct snd_soc_device *socdev = card->socdev; | |
87689d56 | 706 | struct snd_soc_platform *platform = card->platform; |
3ff3f64b | 707 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; |
db2a4165 | 708 | struct snd_soc_codec *codec = socdev->codec; |
6ed25978 | 709 | struct platform_device *pdev = to_platform_device(socdev->dev); |
db2a4165 FM |
710 | int i; |
711 | ||
6ed25978 AG |
712 | /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time, |
713 | * so userspace apps are blocked from touching us | |
714 | */ | |
715 | ||
fde22f27 | 716 | dev_dbg(socdev->dev, "starting resume work\n"); |
6ed25978 | 717 | |
87506549 MB |
718 | if (card->resume_pre) |
719 | card->resume_pre(pdev); | |
db2a4165 | 720 | |
87506549 MB |
721 | for (i = 0; i < card->num_links; i++) { |
722 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
3ba9e10a | 723 | if (cpu_dai->resume && cpu_dai->ac97_control) |
dc7d7b83 | 724 | cpu_dai->resume(cpu_dai); |
db2a4165 FM |
725 | } |
726 | ||
727 | if (codec_dev->resume) | |
728 | codec_dev->resume(pdev); | |
729 | ||
3ff3f64b MB |
730 | for (i = 0; i < codec->num_dai; i++) { |
731 | char *stream = codec->dai[i].playback.stream_name; | |
db2a4165 FM |
732 | if (stream != NULL) |
733 | snd_soc_dapm_stream_event(codec, stream, | |
734 | SND_SOC_DAPM_STREAM_RESUME); | |
735 | stream = codec->dai[i].capture.stream_name; | |
736 | if (stream != NULL) | |
737 | snd_soc_dapm_stream_event(codec, stream, | |
738 | SND_SOC_DAPM_STREAM_RESUME); | |
739 | } | |
740 | ||
3ff3f64b | 741 | /* unmute any active DACs */ |
dee89c4d MB |
742 | for (i = 0; i < card->num_links; i++) { |
743 | struct snd_soc_dai *dai = card->dai_link[i].codec_dai; | |
744 | if (dai->ops.digital_mute && dai->playback.active) | |
745 | dai->ops.digital_mute(dai, 0); | |
db2a4165 FM |
746 | } |
747 | ||
87506549 MB |
748 | for (i = 0; i < card->num_links; i++) { |
749 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
3ba9e10a | 750 | if (cpu_dai->resume && !cpu_dai->ac97_control) |
dc7d7b83 | 751 | cpu_dai->resume(cpu_dai); |
db2a4165 | 752 | if (platform->resume) |
07c84d04 | 753 | platform->resume(cpu_dai); |
db2a4165 FM |
754 | } |
755 | ||
87506549 MB |
756 | if (card->resume_post) |
757 | card->resume_post(pdev); | |
db2a4165 | 758 | |
fde22f27 | 759 | dev_dbg(socdev->dev, "resume work completed\n"); |
6ed25978 AG |
760 | |
761 | /* userspace can access us now we are back as we were before */ | |
762 | snd_power_change_state(codec->card, SNDRV_CTL_POWER_D0); | |
763 | } | |
764 | ||
765 | /* powers up audio subsystem after a suspend */ | |
766 | static int soc_resume(struct platform_device *pdev) | |
767 | { | |
768 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
6308419a | 769 | struct snd_soc_card *card = socdev->card; |
6ed25978 | 770 | |
fde22f27 | 771 | dev_dbg(socdev->dev, "scheduling resume work\n"); |
6ed25978 | 772 | |
6308419a | 773 | if (!schedule_work(&card->deferred_resume_work)) |
fde22f27 | 774 | dev_err(socdev->dev, "resume work item may be lost\n"); |
6ed25978 | 775 | |
db2a4165 FM |
776 | return 0; |
777 | } | |
778 | ||
779 | #else | |
780 | #define soc_suspend NULL | |
781 | #define soc_resume NULL | |
782 | #endif | |
783 | ||
435c5e25 | 784 | static void snd_soc_instantiate_card(struct snd_soc_card *card) |
db2a4165 | 785 | { |
435c5e25 MB |
786 | struct platform_device *pdev = container_of(card->dev, |
787 | struct platform_device, | |
788 | dev); | |
789 | struct snd_soc_codec_device *codec_dev = card->socdev->codec_dev; | |
790 | struct snd_soc_platform *platform; | |
791 | struct snd_soc_dai *dai; | |
6b05eda6 | 792 | int i, found, ret, ac97; |
435c5e25 MB |
793 | |
794 | if (card->instantiated) | |
795 | return; | |
796 | ||
797 | found = 0; | |
798 | list_for_each_entry(platform, &platform_list, list) | |
799 | if (card->platform == platform) { | |
800 | found = 1; | |
801 | break; | |
802 | } | |
803 | if (!found) { | |
804 | dev_dbg(card->dev, "Platform %s not registered\n", | |
805 | card->platform->name); | |
806 | return; | |
807 | } | |
6308419a | 808 | |
6b05eda6 | 809 | ac97 = 0; |
435c5e25 MB |
810 | for (i = 0; i < card->num_links; i++) { |
811 | found = 0; | |
812 | list_for_each_entry(dai, &dai_list, list) | |
813 | if (card->dai_link[i].cpu_dai == dai) { | |
814 | found = 1; | |
815 | break; | |
816 | } | |
817 | if (!found) { | |
818 | dev_dbg(card->dev, "DAI %s not registered\n", | |
819 | card->dai_link[i].cpu_dai->name); | |
820 | return; | |
821 | } | |
6b05eda6 MB |
822 | |
823 | if (card->dai_link[i].cpu_dai->ac97_control) | |
824 | ac97 = 1; | |
c5af3a2e MB |
825 | } |
826 | ||
6b05eda6 MB |
827 | /* If we have AC97 in the system then don't wait for the |
828 | * codec. This will need revisiting if we have to handle | |
829 | * systems with mixed AC97 and non-AC97 parts. Only check for | |
830 | * DAIs currently; we can't do this per link since some AC97 | |
831 | * codecs have non-AC97 DAIs. | |
832 | */ | |
833 | if (!ac97) | |
834 | for (i = 0; i < card->num_links; i++) { | |
835 | found = 0; | |
836 | list_for_each_entry(dai, &dai_list, list) | |
837 | if (card->dai_link[i].codec_dai == dai) { | |
838 | found = 1; | |
839 | break; | |
840 | } | |
841 | if (!found) { | |
842 | dev_dbg(card->dev, "DAI %s not registered\n", | |
843 | card->dai_link[i].codec_dai->name); | |
844 | return; | |
845 | } | |
846 | } | |
847 | ||
435c5e25 MB |
848 | /* Note that we do not current check for codec components */ |
849 | ||
850 | dev_dbg(card->dev, "All components present, instantiating\n"); | |
851 | ||
852 | /* Found everything, bring it up */ | |
87506549 MB |
853 | if (card->probe) { |
854 | ret = card->probe(pdev); | |
3ff3f64b | 855 | if (ret < 0) |
435c5e25 | 856 | return; |
db2a4165 FM |
857 | } |
858 | ||
87506549 MB |
859 | for (i = 0; i < card->num_links; i++) { |
860 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
db2a4165 | 861 | if (cpu_dai->probe) { |
bdb92876 | 862 | ret = cpu_dai->probe(pdev, cpu_dai); |
3ff3f64b | 863 | if (ret < 0) |
db2a4165 FM |
864 | goto cpu_dai_err; |
865 | } | |
866 | } | |
867 | ||
868 | if (codec_dev->probe) { | |
869 | ret = codec_dev->probe(pdev); | |
3ff3f64b | 870 | if (ret < 0) |
db2a4165 FM |
871 | goto cpu_dai_err; |
872 | } | |
873 | ||
874 | if (platform->probe) { | |
875 | ret = platform->probe(pdev); | |
3ff3f64b | 876 | if (ret < 0) |
db2a4165 FM |
877 | goto platform_err; |
878 | } | |
879 | ||
880 | /* DAPM stream work */ | |
6308419a | 881 | INIT_DELAYED_WORK(&card->delayed_work, close_delayed_work); |
1301a964 | 882 | #ifdef CONFIG_PM |
6ed25978 | 883 | /* deferred resume work */ |
6308419a | 884 | INIT_WORK(&card->deferred_resume_work, soc_resume_deferred); |
1301a964 | 885 | #endif |
6ed25978 | 886 | |
435c5e25 MB |
887 | card->instantiated = 1; |
888 | ||
889 | return; | |
db2a4165 | 890 | |
db2a4165 FM |
891 | platform_err: |
892 | if (codec_dev->remove) | |
893 | codec_dev->remove(pdev); | |
894 | ||
895 | cpu_dai_err: | |
18b9b3d9 | 896 | for (i--; i >= 0; i--) { |
87506549 | 897 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; |
db2a4165 | 898 | if (cpu_dai->remove) |
bdb92876 | 899 | cpu_dai->remove(pdev, cpu_dai); |
db2a4165 FM |
900 | } |
901 | ||
87506549 MB |
902 | if (card->remove) |
903 | card->remove(pdev); | |
435c5e25 | 904 | } |
db2a4165 | 905 | |
435c5e25 MB |
906 | /* |
907 | * Attempt to initialise any uninitalised cards. Must be called with | |
908 | * client_mutex. | |
909 | */ | |
910 | static void snd_soc_instantiate_cards(void) | |
911 | { | |
912 | struct snd_soc_card *card; | |
913 | list_for_each_entry(card, &card_list, list) | |
914 | snd_soc_instantiate_card(card); | |
915 | } | |
916 | ||
917 | /* probes a new socdev */ | |
918 | static int soc_probe(struct platform_device *pdev) | |
919 | { | |
920 | int ret = 0; | |
921 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
922 | struct snd_soc_card *card = socdev->card; | |
923 | ||
924 | /* Bodge while we push things out of socdev */ | |
925 | card->socdev = socdev; | |
926 | ||
927 | /* Bodge while we unpick instantiation */ | |
928 | card->dev = &pdev->dev; | |
929 | ret = snd_soc_register_card(card); | |
930 | if (ret != 0) { | |
931 | dev_err(&pdev->dev, "Failed to register card\n"); | |
932 | return ret; | |
933 | } | |
934 | ||
935 | return 0; | |
db2a4165 FM |
936 | } |
937 | ||
938 | /* removes a socdev */ | |
939 | static int soc_remove(struct platform_device *pdev) | |
940 | { | |
941 | int i; | |
942 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
87506549 | 943 | struct snd_soc_card *card = socdev->card; |
87689d56 | 944 | struct snd_soc_platform *platform = card->platform; |
db2a4165 FM |
945 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; |
946 | ||
6308419a | 947 | run_delayed_work(&card->delayed_work); |
965ac42c | 948 | |
db2a4165 FM |
949 | if (platform->remove) |
950 | platform->remove(pdev); | |
951 | ||
952 | if (codec_dev->remove) | |
953 | codec_dev->remove(pdev); | |
954 | ||
87506549 MB |
955 | for (i = 0; i < card->num_links; i++) { |
956 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
db2a4165 | 957 | if (cpu_dai->remove) |
bdb92876 | 958 | cpu_dai->remove(pdev, cpu_dai); |
db2a4165 FM |
959 | } |
960 | ||
87506549 MB |
961 | if (card->remove) |
962 | card->remove(pdev); | |
db2a4165 | 963 | |
c5af3a2e MB |
964 | snd_soc_unregister_card(card); |
965 | ||
db2a4165 FM |
966 | return 0; |
967 | } | |
968 | ||
969 | /* ASoC platform driver */ | |
970 | static struct platform_driver soc_driver = { | |
971 | .driver = { | |
972 | .name = "soc-audio", | |
8b45a209 | 973 | .owner = THIS_MODULE, |
db2a4165 FM |
974 | }, |
975 | .probe = soc_probe, | |
976 | .remove = soc_remove, | |
977 | .suspend = soc_suspend, | |
978 | .resume = soc_resume, | |
979 | }; | |
980 | ||
981 | /* create a new pcm */ | |
982 | static int soc_new_pcm(struct snd_soc_device *socdev, | |
983 | struct snd_soc_dai_link *dai_link, int num) | |
984 | { | |
985 | struct snd_soc_codec *codec = socdev->codec; | |
87689d56 MB |
986 | struct snd_soc_card *card = socdev->card; |
987 | struct snd_soc_platform *platform = card->platform; | |
3c4b266f LG |
988 | struct snd_soc_dai *codec_dai = dai_link->codec_dai; |
989 | struct snd_soc_dai *cpu_dai = dai_link->cpu_dai; | |
db2a4165 FM |
990 | struct snd_soc_pcm_runtime *rtd; |
991 | struct snd_pcm *pcm; | |
992 | char new_name[64]; | |
993 | int ret = 0, playback = 0, capture = 0; | |
994 | ||
995 | rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime), GFP_KERNEL); | |
996 | if (rtd == NULL) | |
997 | return -ENOMEM; | |
cb666e5b LG |
998 | |
999 | rtd->dai = dai_link; | |
db2a4165 | 1000 | rtd->socdev = socdev; |
cb666e5b | 1001 | codec_dai->codec = socdev->codec; |
db2a4165 FM |
1002 | |
1003 | /* check client and interface hw capabilities */ | |
3ba9e10a MB |
1004 | sprintf(new_name, "%s %s-%d", dai_link->stream_name, codec_dai->name, |
1005 | num); | |
db2a4165 FM |
1006 | |
1007 | if (codec_dai->playback.channels_min) | |
1008 | playback = 1; | |
1009 | if (codec_dai->capture.channels_min) | |
1010 | capture = 1; | |
1011 | ||
1012 | ret = snd_pcm_new(codec->card, new_name, codec->pcm_devs++, playback, | |
1013 | capture, &pcm); | |
1014 | if (ret < 0) { | |
3ff3f64b MB |
1015 | printk(KERN_ERR "asoc: can't create pcm for codec %s\n", |
1016 | codec->name); | |
db2a4165 FM |
1017 | kfree(rtd); |
1018 | return ret; | |
1019 | } | |
1020 | ||
4ccab3e7 | 1021 | dai_link->pcm = pcm; |
db2a4165 | 1022 | pcm->private_data = rtd; |
87689d56 MB |
1023 | soc_pcm_ops.mmap = platform->pcm_ops->mmap; |
1024 | soc_pcm_ops.pointer = platform->pcm_ops->pointer; | |
1025 | soc_pcm_ops.ioctl = platform->pcm_ops->ioctl; | |
1026 | soc_pcm_ops.copy = platform->pcm_ops->copy; | |
1027 | soc_pcm_ops.silence = platform->pcm_ops->silence; | |
1028 | soc_pcm_ops.ack = platform->pcm_ops->ack; | |
1029 | soc_pcm_ops.page = platform->pcm_ops->page; | |
db2a4165 FM |
1030 | |
1031 | if (playback) | |
1032 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &soc_pcm_ops); | |
1033 | ||
1034 | if (capture) | |
1035 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &soc_pcm_ops); | |
1036 | ||
87689d56 | 1037 | ret = platform->pcm_new(codec->card, codec_dai, pcm); |
db2a4165 FM |
1038 | if (ret < 0) { |
1039 | printk(KERN_ERR "asoc: platform pcm constructor failed\n"); | |
1040 | kfree(rtd); | |
1041 | return ret; | |
1042 | } | |
1043 | ||
87689d56 | 1044 | pcm->private_free = platform->pcm_free; |
db2a4165 FM |
1045 | printk(KERN_INFO "asoc: %s <-> %s mapping ok\n", codec_dai->name, |
1046 | cpu_dai->name); | |
1047 | return ret; | |
1048 | } | |
1049 | ||
1050 | /* codec register dump */ | |
12ef193d | 1051 | static ssize_t soc_codec_reg_show(struct snd_soc_device *devdata, char *buf) |
db2a4165 | 1052 | { |
db2a4165 FM |
1053 | struct snd_soc_codec *codec = devdata->codec; |
1054 | int i, step = 1, count = 0; | |
1055 | ||
1056 | if (!codec->reg_cache_size) | |
1057 | return 0; | |
1058 | ||
1059 | if (codec->reg_cache_step) | |
1060 | step = codec->reg_cache_step; | |
1061 | ||
1062 | count += sprintf(buf, "%s registers\n", codec->name); | |
58cd33c0 MB |
1063 | for (i = 0; i < codec->reg_cache_size; i += step) { |
1064 | count += sprintf(buf + count, "%2x: ", i); | |
1065 | if (count >= PAGE_SIZE - 1) | |
1066 | break; | |
1067 | ||
1068 | if (codec->display_register) | |
1069 | count += codec->display_register(codec, buf + count, | |
1070 | PAGE_SIZE - count, i); | |
1071 | else | |
1072 | count += snprintf(buf + count, PAGE_SIZE - count, | |
1073 | "%4x", codec->read(codec, i)); | |
1074 | ||
1075 | if (count >= PAGE_SIZE - 1) | |
1076 | break; | |
1077 | ||
1078 | count += snprintf(buf + count, PAGE_SIZE - count, "\n"); | |
1079 | if (count >= PAGE_SIZE - 1) | |
1080 | break; | |
1081 | } | |
1082 | ||
1083 | /* Truncate count; min() would cause a warning */ | |
1084 | if (count >= PAGE_SIZE) | |
1085 | count = PAGE_SIZE - 1; | |
db2a4165 FM |
1086 | |
1087 | return count; | |
1088 | } | |
12ef193d TK |
1089 | static ssize_t codec_reg_show(struct device *dev, |
1090 | struct device_attribute *attr, char *buf) | |
1091 | { | |
1092 | struct snd_soc_device *devdata = dev_get_drvdata(dev); | |
1093 | return soc_codec_reg_show(devdata, buf); | |
1094 | } | |
1095 | ||
db2a4165 FM |
1096 | static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL); |
1097 | ||
12ef193d TK |
1098 | #ifdef CONFIG_DEBUG_FS |
1099 | static int codec_reg_open_file(struct inode *inode, struct file *file) | |
1100 | { | |
1101 | file->private_data = inode->i_private; | |
1102 | return 0; | |
1103 | } | |
1104 | ||
1105 | static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf, | |
1106 | size_t count, loff_t *ppos) | |
1107 | { | |
1108 | ssize_t ret; | |
384c89e2 MB |
1109 | struct snd_soc_codec *codec = file->private_data; |
1110 | struct device *card_dev = codec->card->dev; | |
1111 | struct snd_soc_device *devdata = card_dev->driver_data; | |
12ef193d TK |
1112 | char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL); |
1113 | if (!buf) | |
1114 | return -ENOMEM; | |
1115 | ret = soc_codec_reg_show(devdata, buf); | |
1116 | if (ret >= 0) | |
1117 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); | |
1118 | kfree(buf); | |
1119 | return ret; | |
1120 | } | |
1121 | ||
1122 | static ssize_t codec_reg_write_file(struct file *file, | |
1123 | const char __user *user_buf, size_t count, loff_t *ppos) | |
1124 | { | |
1125 | char buf[32]; | |
1126 | int buf_size; | |
1127 | char *start = buf; | |
1128 | unsigned long reg, value; | |
1129 | int step = 1; | |
384c89e2 | 1130 | struct snd_soc_codec *codec = file->private_data; |
12ef193d TK |
1131 | |
1132 | buf_size = min(count, (sizeof(buf)-1)); | |
1133 | if (copy_from_user(buf, user_buf, buf_size)) | |
1134 | return -EFAULT; | |
1135 | buf[buf_size] = 0; | |
1136 | ||
1137 | if (codec->reg_cache_step) | |
1138 | step = codec->reg_cache_step; | |
1139 | ||
1140 | while (*start == ' ') | |
1141 | start++; | |
1142 | reg = simple_strtoul(start, &start, 16); | |
1143 | if ((reg >= codec->reg_cache_size) || (reg % step)) | |
1144 | return -EINVAL; | |
1145 | while (*start == ' ') | |
1146 | start++; | |
1147 | if (strict_strtoul(start, 16, &value)) | |
1148 | return -EINVAL; | |
1149 | codec->write(codec, reg, value); | |
1150 | return buf_size; | |
1151 | } | |
1152 | ||
1153 | static const struct file_operations codec_reg_fops = { | |
1154 | .open = codec_reg_open_file, | |
1155 | .read = codec_reg_read_file, | |
1156 | .write = codec_reg_write_file, | |
1157 | }; | |
1158 | ||
384c89e2 | 1159 | static void soc_init_codec_debugfs(struct snd_soc_codec *codec) |
12ef193d | 1160 | { |
384c89e2 MB |
1161 | codec->debugfs_reg = debugfs_create_file("codec_reg", 0644, |
1162 | debugfs_root, codec, | |
1163 | &codec_reg_fops); | |
1164 | if (!codec->debugfs_reg) | |
1165 | printk(KERN_WARNING | |
1166 | "ASoC: Failed to create codec register debugfs file\n"); | |
1167 | ||
1168 | codec->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0744, | |
1169 | debugfs_root, | |
1170 | &codec->pop_time); | |
1171 | if (!codec->debugfs_pop_time) | |
1172 | printk(KERN_WARNING | |
1173 | "Failed to create pop time debugfs file\n"); | |
12ef193d TK |
1174 | } |
1175 | ||
384c89e2 | 1176 | static void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec) |
12ef193d | 1177 | { |
384c89e2 MB |
1178 | debugfs_remove(codec->debugfs_pop_time); |
1179 | debugfs_remove(codec->debugfs_reg); | |
12ef193d TK |
1180 | } |
1181 | ||
1182 | #else | |
1183 | ||
384c89e2 | 1184 | static inline void soc_init_codec_debugfs(struct snd_soc_codec *codec) |
12ef193d TK |
1185 | { |
1186 | } | |
1187 | ||
384c89e2 | 1188 | static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec) |
12ef193d TK |
1189 | { |
1190 | } | |
1191 | #endif | |
1192 | ||
db2a4165 FM |
1193 | /** |
1194 | * snd_soc_new_ac97_codec - initailise AC97 device | |
1195 | * @codec: audio codec | |
1196 | * @ops: AC97 bus operations | |
1197 | * @num: AC97 codec number | |
1198 | * | |
1199 | * Initialises AC97 codec resources for use by ad-hoc devices only. | |
1200 | */ | |
1201 | int snd_soc_new_ac97_codec(struct snd_soc_codec *codec, | |
1202 | struct snd_ac97_bus_ops *ops, int num) | |
1203 | { | |
1204 | mutex_lock(&codec->mutex); | |
1205 | ||
1206 | codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL); | |
1207 | if (codec->ac97 == NULL) { | |
1208 | mutex_unlock(&codec->mutex); | |
1209 | return -ENOMEM; | |
1210 | } | |
1211 | ||
1212 | codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL); | |
1213 | if (codec->ac97->bus == NULL) { | |
1214 | kfree(codec->ac97); | |
1215 | codec->ac97 = NULL; | |
1216 | mutex_unlock(&codec->mutex); | |
1217 | return -ENOMEM; | |
1218 | } | |
1219 | ||
1220 | codec->ac97->bus->ops = ops; | |
1221 | codec->ac97->num = num; | |
1222 | mutex_unlock(&codec->mutex); | |
1223 | return 0; | |
1224 | } | |
1225 | EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec); | |
1226 | ||
1227 | /** | |
1228 | * snd_soc_free_ac97_codec - free AC97 codec device | |
1229 | * @codec: audio codec | |
1230 | * | |
1231 | * Frees AC97 codec device resources. | |
1232 | */ | |
1233 | void snd_soc_free_ac97_codec(struct snd_soc_codec *codec) | |
1234 | { | |
1235 | mutex_lock(&codec->mutex); | |
1236 | kfree(codec->ac97->bus); | |
1237 | kfree(codec->ac97); | |
1238 | codec->ac97 = NULL; | |
1239 | mutex_unlock(&codec->mutex); | |
1240 | } | |
1241 | EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec); | |
1242 | ||
1243 | /** | |
1244 | * snd_soc_update_bits - update codec register bits | |
1245 | * @codec: audio codec | |
1246 | * @reg: codec register | |
1247 | * @mask: register mask | |
1248 | * @value: new value | |
1249 | * | |
1250 | * Writes new register value. | |
1251 | * | |
1252 | * Returns 1 for change else 0. | |
1253 | */ | |
1254 | int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg, | |
1255 | unsigned short mask, unsigned short value) | |
1256 | { | |
1257 | int change; | |
1258 | unsigned short old, new; | |
1259 | ||
1260 | mutex_lock(&io_mutex); | |
1261 | old = snd_soc_read(codec, reg); | |
1262 | new = (old & ~mask) | value; | |
1263 | change = old != new; | |
1264 | if (change) | |
1265 | snd_soc_write(codec, reg, new); | |
1266 | ||
1267 | mutex_unlock(&io_mutex); | |
1268 | return change; | |
1269 | } | |
1270 | EXPORT_SYMBOL_GPL(snd_soc_update_bits); | |
1271 | ||
1272 | /** | |
1273 | * snd_soc_test_bits - test register for change | |
1274 | * @codec: audio codec | |
1275 | * @reg: codec register | |
1276 | * @mask: register mask | |
1277 | * @value: new value | |
1278 | * | |
1279 | * Tests a register with a new value and checks if the new value is | |
1280 | * different from the old value. | |
1281 | * | |
1282 | * Returns 1 for change else 0. | |
1283 | */ | |
1284 | int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg, | |
1285 | unsigned short mask, unsigned short value) | |
1286 | { | |
1287 | int change; | |
1288 | unsigned short old, new; | |
1289 | ||
1290 | mutex_lock(&io_mutex); | |
1291 | old = snd_soc_read(codec, reg); | |
1292 | new = (old & ~mask) | value; | |
1293 | change = old != new; | |
1294 | mutex_unlock(&io_mutex); | |
1295 | ||
1296 | return change; | |
1297 | } | |
1298 | EXPORT_SYMBOL_GPL(snd_soc_test_bits); | |
1299 | ||
db2a4165 FM |
1300 | /** |
1301 | * snd_soc_new_pcms - create new sound card and pcms | |
1302 | * @socdev: the SoC audio device | |
ac11a2b3 MB |
1303 | * @idx: ALSA card index |
1304 | * @xid: card identification | |
db2a4165 FM |
1305 | * |
1306 | * Create a new sound card based upon the codec and interface pcms. | |
1307 | * | |
1308 | * Returns 0 for success, else error. | |
1309 | */ | |
bc7320c5 | 1310 | int snd_soc_new_pcms(struct snd_soc_device *socdev, int idx, const char *xid) |
db2a4165 FM |
1311 | { |
1312 | struct snd_soc_codec *codec = socdev->codec; | |
87506549 | 1313 | struct snd_soc_card *card = socdev->card; |
db2a4165 FM |
1314 | int ret = 0, i; |
1315 | ||
1316 | mutex_lock(&codec->mutex); | |
1317 | ||
1318 | /* register a sound card */ | |
1319 | codec->card = snd_card_new(idx, xid, codec->owner, 0); | |
1320 | if (!codec->card) { | |
1321 | printk(KERN_ERR "asoc: can't create sound card for codec %s\n", | |
1322 | codec->name); | |
1323 | mutex_unlock(&codec->mutex); | |
1324 | return -ENODEV; | |
1325 | } | |
1326 | ||
1327 | codec->card->dev = socdev->dev; | |
1328 | codec->card->private_data = codec; | |
1329 | strncpy(codec->card->driver, codec->name, sizeof(codec->card->driver)); | |
1330 | ||
1331 | /* create the pcms */ | |
87506549 MB |
1332 | for (i = 0; i < card->num_links; i++) { |
1333 | ret = soc_new_pcm(socdev, &card->dai_link[i], i); | |
db2a4165 FM |
1334 | if (ret < 0) { |
1335 | printk(KERN_ERR "asoc: can't create pcm %s\n", | |
87506549 | 1336 | card->dai_link[i].stream_name); |
db2a4165 FM |
1337 | mutex_unlock(&codec->mutex); |
1338 | return ret; | |
1339 | } | |
1340 | } | |
1341 | ||
1342 | mutex_unlock(&codec->mutex); | |
1343 | return ret; | |
1344 | } | |
1345 | EXPORT_SYMBOL_GPL(snd_soc_new_pcms); | |
1346 | ||
1347 | /** | |
968a6025 | 1348 | * snd_soc_init_card - register sound card |
db2a4165 FM |
1349 | * @socdev: the SoC audio device |
1350 | * | |
1351 | * Register a SoC sound card. Also registers an AC97 device if the | |
1352 | * codec is AC97 for ad hoc devices. | |
1353 | * | |
1354 | * Returns 0 for success, else error. | |
1355 | */ | |
968a6025 | 1356 | int snd_soc_init_card(struct snd_soc_device *socdev) |
db2a4165 FM |
1357 | { |
1358 | struct snd_soc_codec *codec = socdev->codec; | |
87506549 | 1359 | struct snd_soc_card *card = socdev->card; |
12e74f7d | 1360 | int ret = 0, i, ac97 = 0, err = 0; |
db2a4165 | 1361 | |
87506549 MB |
1362 | for (i = 0; i < card->num_links; i++) { |
1363 | if (card->dai_link[i].init) { | |
1364 | err = card->dai_link[i].init(codec); | |
12e74f7d LG |
1365 | if (err < 0) { |
1366 | printk(KERN_ERR "asoc: failed to init %s\n", | |
87506549 | 1367 | card->dai_link[i].stream_name); |
12e74f7d LG |
1368 | continue; |
1369 | } | |
1370 | } | |
3ba9e10a | 1371 | if (card->dai_link[i].codec_dai->ac97_control) |
db2a4165 FM |
1372 | ac97 = 1; |
1373 | } | |
1374 | snprintf(codec->card->shortname, sizeof(codec->card->shortname), | |
87506549 | 1375 | "%s", card->name); |
db2a4165 | 1376 | snprintf(codec->card->longname, sizeof(codec->card->longname), |
87506549 | 1377 | "%s (%s)", card->name, codec->name); |
db2a4165 FM |
1378 | |
1379 | ret = snd_card_register(codec->card); | |
1380 | if (ret < 0) { | |
3ff3f64b | 1381 | printk(KERN_ERR "asoc: failed to register soundcard for %s\n", |
db2a4165 | 1382 | codec->name); |
12e74f7d | 1383 | goto out; |
db2a4165 FM |
1384 | } |
1385 | ||
08c8efe6 | 1386 | mutex_lock(&codec->mutex); |
db2a4165 | 1387 | #ifdef CONFIG_SND_SOC_AC97_BUS |
12e74f7d LG |
1388 | if (ac97) { |
1389 | ret = soc_ac97_dev_register(codec); | |
1390 | if (ret < 0) { | |
1391 | printk(KERN_ERR "asoc: AC97 device register failed\n"); | |
1392 | snd_card_free(codec->card); | |
08c8efe6 | 1393 | mutex_unlock(&codec->mutex); |
12e74f7d LG |
1394 | goto out; |
1395 | } | |
1396 | } | |
db2a4165 FM |
1397 | #endif |
1398 | ||
12e74f7d LG |
1399 | err = snd_soc_dapm_sys_add(socdev->dev); |
1400 | if (err < 0) | |
1401 | printk(KERN_WARNING "asoc: failed to add dapm sysfs entries\n"); | |
1402 | ||
1403 | err = device_create_file(socdev->dev, &dev_attr_codec_reg); | |
1404 | if (err < 0) | |
3ff3f64b | 1405 | printk(KERN_WARNING "asoc: failed to add codec sysfs files\n"); |
08c8efe6 | 1406 | |
384c89e2 | 1407 | soc_init_codec_debugfs(socdev->codec); |
db2a4165 | 1408 | mutex_unlock(&codec->mutex); |
08c8efe6 MB |
1409 | |
1410 | out: | |
db2a4165 FM |
1411 | return ret; |
1412 | } | |
968a6025 | 1413 | EXPORT_SYMBOL_GPL(snd_soc_init_card); |
db2a4165 FM |
1414 | |
1415 | /** | |
1416 | * snd_soc_free_pcms - free sound card and pcms | |
1417 | * @socdev: the SoC audio device | |
1418 | * | |
1419 | * Frees sound card and pcms associated with the socdev. | |
1420 | * Also unregister the codec if it is an AC97 device. | |
1421 | */ | |
1422 | void snd_soc_free_pcms(struct snd_soc_device *socdev) | |
1423 | { | |
1424 | struct snd_soc_codec *codec = socdev->codec; | |
a68660e0 | 1425 | #ifdef CONFIG_SND_SOC_AC97_BUS |
3c4b266f | 1426 | struct snd_soc_dai *codec_dai; |
a68660e0 LG |
1427 | int i; |
1428 | #endif | |
db2a4165 FM |
1429 | |
1430 | mutex_lock(&codec->mutex); | |
384c89e2 | 1431 | soc_cleanup_codec_debugfs(socdev->codec); |
db2a4165 | 1432 | #ifdef CONFIG_SND_SOC_AC97_BUS |
3ff3f64b | 1433 | for (i = 0; i < codec->num_dai; i++) { |
a68660e0 | 1434 | codec_dai = &codec->dai[i]; |
3ba9e10a | 1435 | if (codec_dai->ac97_control && codec->ac97) { |
a68660e0 LG |
1436 | soc_ac97_dev_unregister(codec); |
1437 | goto free_card; | |
1438 | } | |
1439 | } | |
1440 | free_card: | |
db2a4165 FM |
1441 | #endif |
1442 | ||
1443 | if (codec->card) | |
1444 | snd_card_free(codec->card); | |
1445 | device_remove_file(socdev->dev, &dev_attr_codec_reg); | |
1446 | mutex_unlock(&codec->mutex); | |
1447 | } | |
1448 | EXPORT_SYMBOL_GPL(snd_soc_free_pcms); | |
1449 | ||
1450 | /** | |
1451 | * snd_soc_set_runtime_hwparams - set the runtime hardware parameters | |
1452 | * @substream: the pcm substream | |
1453 | * @hw: the hardware parameters | |
1454 | * | |
1455 | * Sets the substream runtime hardware parameters. | |
1456 | */ | |
1457 | int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream, | |
1458 | const struct snd_pcm_hardware *hw) | |
1459 | { | |
1460 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1461 | runtime->hw.info = hw->info; | |
1462 | runtime->hw.formats = hw->formats; | |
1463 | runtime->hw.period_bytes_min = hw->period_bytes_min; | |
1464 | runtime->hw.period_bytes_max = hw->period_bytes_max; | |
1465 | runtime->hw.periods_min = hw->periods_min; | |
1466 | runtime->hw.periods_max = hw->periods_max; | |
1467 | runtime->hw.buffer_bytes_max = hw->buffer_bytes_max; | |
1468 | runtime->hw.fifo_size = hw->fifo_size; | |
1469 | return 0; | |
1470 | } | |
1471 | EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams); | |
1472 | ||
1473 | /** | |
1474 | * snd_soc_cnew - create new control | |
1475 | * @_template: control template | |
1476 | * @data: control private data | |
ac11a2b3 | 1477 | * @long_name: control long name |
db2a4165 FM |
1478 | * |
1479 | * Create a new mixer control from a template control. | |
1480 | * | |
1481 | * Returns 0 for success, else error. | |
1482 | */ | |
1483 | struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template, | |
1484 | void *data, char *long_name) | |
1485 | { | |
1486 | struct snd_kcontrol_new template; | |
1487 | ||
1488 | memcpy(&template, _template, sizeof(template)); | |
1489 | if (long_name) | |
1490 | template.name = long_name; | |
db2a4165 FM |
1491 | template.index = 0; |
1492 | ||
1493 | return snd_ctl_new1(&template, data); | |
1494 | } | |
1495 | EXPORT_SYMBOL_GPL(snd_soc_cnew); | |
1496 | ||
1497 | /** | |
1498 | * snd_soc_info_enum_double - enumerated double mixer info callback | |
1499 | * @kcontrol: mixer control | |
1500 | * @uinfo: control element information | |
1501 | * | |
1502 | * Callback to provide information about a double enumerated | |
1503 | * mixer control. | |
1504 | * | |
1505 | * Returns 0 for success. | |
1506 | */ | |
1507 | int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol, | |
1508 | struct snd_ctl_elem_info *uinfo) | |
1509 | { | |
1510 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1511 | ||
1512 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; | |
1513 | uinfo->count = e->shift_l == e->shift_r ? 1 : 2; | |
f8ba0b7b | 1514 | uinfo->value.enumerated.items = e->max; |
db2a4165 | 1515 | |
f8ba0b7b JS |
1516 | if (uinfo->value.enumerated.item > e->max - 1) |
1517 | uinfo->value.enumerated.item = e->max - 1; | |
db2a4165 FM |
1518 | strcpy(uinfo->value.enumerated.name, |
1519 | e->texts[uinfo->value.enumerated.item]); | |
1520 | return 0; | |
1521 | } | |
1522 | EXPORT_SYMBOL_GPL(snd_soc_info_enum_double); | |
1523 | ||
1524 | /** | |
1525 | * snd_soc_get_enum_double - enumerated double mixer get callback | |
1526 | * @kcontrol: mixer control | |
ac11a2b3 | 1527 | * @ucontrol: control element information |
db2a4165 FM |
1528 | * |
1529 | * Callback to get the value of a double enumerated mixer. | |
1530 | * | |
1531 | * Returns 0 for success. | |
1532 | */ | |
1533 | int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol, | |
1534 | struct snd_ctl_elem_value *ucontrol) | |
1535 | { | |
1536 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1537 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1538 | unsigned short val, bitmask; | |
1539 | ||
f8ba0b7b | 1540 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
db2a4165 FM |
1541 | ; |
1542 | val = snd_soc_read(codec, e->reg); | |
3ff3f64b MB |
1543 | ucontrol->value.enumerated.item[0] |
1544 | = (val >> e->shift_l) & (bitmask - 1); | |
db2a4165 FM |
1545 | if (e->shift_l != e->shift_r) |
1546 | ucontrol->value.enumerated.item[1] = | |
1547 | (val >> e->shift_r) & (bitmask - 1); | |
1548 | ||
1549 | return 0; | |
1550 | } | |
1551 | EXPORT_SYMBOL_GPL(snd_soc_get_enum_double); | |
1552 | ||
1553 | /** | |
1554 | * snd_soc_put_enum_double - enumerated double mixer put callback | |
1555 | * @kcontrol: mixer control | |
ac11a2b3 | 1556 | * @ucontrol: control element information |
db2a4165 FM |
1557 | * |
1558 | * Callback to set the value of a double enumerated mixer. | |
1559 | * | |
1560 | * Returns 0 for success. | |
1561 | */ | |
1562 | int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol, | |
1563 | struct snd_ctl_elem_value *ucontrol) | |
1564 | { | |
1565 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1566 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1567 | unsigned short val; | |
1568 | unsigned short mask, bitmask; | |
1569 | ||
f8ba0b7b | 1570 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
db2a4165 | 1571 | ; |
f8ba0b7b | 1572 | if (ucontrol->value.enumerated.item[0] > e->max - 1) |
db2a4165 FM |
1573 | return -EINVAL; |
1574 | val = ucontrol->value.enumerated.item[0] << e->shift_l; | |
1575 | mask = (bitmask - 1) << e->shift_l; | |
1576 | if (e->shift_l != e->shift_r) { | |
f8ba0b7b | 1577 | if (ucontrol->value.enumerated.item[1] > e->max - 1) |
db2a4165 FM |
1578 | return -EINVAL; |
1579 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
1580 | mask |= (bitmask - 1) << e->shift_r; | |
1581 | } | |
1582 | ||
1583 | return snd_soc_update_bits(codec, e->reg, mask, val); | |
1584 | } | |
1585 | EXPORT_SYMBOL_GPL(snd_soc_put_enum_double); | |
1586 | ||
1587 | /** | |
1588 | * snd_soc_info_enum_ext - external enumerated single mixer info callback | |
1589 | * @kcontrol: mixer control | |
1590 | * @uinfo: control element information | |
1591 | * | |
1592 | * Callback to provide information about an external enumerated | |
1593 | * single mixer. | |
1594 | * | |
1595 | * Returns 0 for success. | |
1596 | */ | |
1597 | int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol, | |
1598 | struct snd_ctl_elem_info *uinfo) | |
1599 | { | |
1600 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1601 | ||
1602 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; | |
1603 | uinfo->count = 1; | |
f8ba0b7b | 1604 | uinfo->value.enumerated.items = e->max; |
db2a4165 | 1605 | |
f8ba0b7b JS |
1606 | if (uinfo->value.enumerated.item > e->max - 1) |
1607 | uinfo->value.enumerated.item = e->max - 1; | |
db2a4165 FM |
1608 | strcpy(uinfo->value.enumerated.name, |
1609 | e->texts[uinfo->value.enumerated.item]); | |
1610 | return 0; | |
1611 | } | |
1612 | EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext); | |
1613 | ||
1614 | /** | |
1615 | * snd_soc_info_volsw_ext - external single mixer info callback | |
1616 | * @kcontrol: mixer control | |
1617 | * @uinfo: control element information | |
1618 | * | |
1619 | * Callback to provide information about a single external mixer control. | |
1620 | * | |
1621 | * Returns 0 for success. | |
1622 | */ | |
1623 | int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol, | |
1624 | struct snd_ctl_elem_info *uinfo) | |
1625 | { | |
a7a4ac86 PZ |
1626 | int max = kcontrol->private_value; |
1627 | ||
1628 | if (max == 1) | |
1629 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1630 | else | |
1631 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
db2a4165 | 1632 | |
db2a4165 FM |
1633 | uinfo->count = 1; |
1634 | uinfo->value.integer.min = 0; | |
a7a4ac86 | 1635 | uinfo->value.integer.max = max; |
db2a4165 FM |
1636 | return 0; |
1637 | } | |
1638 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext); | |
1639 | ||
db2a4165 FM |
1640 | /** |
1641 | * snd_soc_info_volsw - single mixer info callback | |
1642 | * @kcontrol: mixer control | |
1643 | * @uinfo: control element information | |
1644 | * | |
1645 | * Callback to provide information about a single mixer control. | |
1646 | * | |
1647 | * Returns 0 for success. | |
1648 | */ | |
1649 | int snd_soc_info_volsw(struct snd_kcontrol *kcontrol, | |
1650 | struct snd_ctl_elem_info *uinfo) | |
1651 | { | |
4eaa9819 JS |
1652 | struct soc_mixer_control *mc = |
1653 | (struct soc_mixer_control *)kcontrol->private_value; | |
1654 | int max = mc->max; | |
762b8df7 | 1655 | unsigned int shift = mc->shift; |
815ecf8d | 1656 | unsigned int rshift = mc->rshift; |
db2a4165 | 1657 | |
a7a4ac86 PZ |
1658 | if (max == 1) |
1659 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1660 | else | |
1661 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
1662 | ||
db2a4165 FM |
1663 | uinfo->count = shift == rshift ? 1 : 2; |
1664 | uinfo->value.integer.min = 0; | |
a7a4ac86 | 1665 | uinfo->value.integer.max = max; |
db2a4165 FM |
1666 | return 0; |
1667 | } | |
1668 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw); | |
1669 | ||
1670 | /** | |
1671 | * snd_soc_get_volsw - single mixer get callback | |
1672 | * @kcontrol: mixer control | |
ac11a2b3 | 1673 | * @ucontrol: control element information |
db2a4165 FM |
1674 | * |
1675 | * Callback to get the value of a single mixer control. | |
1676 | * | |
1677 | * Returns 0 for success. | |
1678 | */ | |
1679 | int snd_soc_get_volsw(struct snd_kcontrol *kcontrol, | |
1680 | struct snd_ctl_elem_value *ucontrol) | |
1681 | { | |
4eaa9819 JS |
1682 | struct soc_mixer_control *mc = |
1683 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 1684 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
1685 | unsigned int reg = mc->reg; |
1686 | unsigned int shift = mc->shift; | |
1687 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1688 | int max = mc->max; |
815ecf8d JS |
1689 | unsigned int mask = (1 << fls(max)) - 1; |
1690 | unsigned int invert = mc->invert; | |
db2a4165 FM |
1691 | |
1692 | ucontrol->value.integer.value[0] = | |
1693 | (snd_soc_read(codec, reg) >> shift) & mask; | |
1694 | if (shift != rshift) | |
1695 | ucontrol->value.integer.value[1] = | |
1696 | (snd_soc_read(codec, reg) >> rshift) & mask; | |
1697 | if (invert) { | |
1698 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1699 | max - ucontrol->value.integer.value[0]; |
db2a4165 FM |
1700 | if (shift != rshift) |
1701 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 1702 | max - ucontrol->value.integer.value[1]; |
db2a4165 FM |
1703 | } |
1704 | ||
1705 | return 0; | |
1706 | } | |
1707 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw); | |
1708 | ||
1709 | /** | |
1710 | * snd_soc_put_volsw - single mixer put callback | |
1711 | * @kcontrol: mixer control | |
ac11a2b3 | 1712 | * @ucontrol: control element information |
db2a4165 FM |
1713 | * |
1714 | * Callback to set the value of a single mixer control. | |
1715 | * | |
1716 | * Returns 0 for success. | |
1717 | */ | |
1718 | int snd_soc_put_volsw(struct snd_kcontrol *kcontrol, | |
1719 | struct snd_ctl_elem_value *ucontrol) | |
1720 | { | |
4eaa9819 JS |
1721 | struct soc_mixer_control *mc = |
1722 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 1723 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
1724 | unsigned int reg = mc->reg; |
1725 | unsigned int shift = mc->shift; | |
1726 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1727 | int max = mc->max; |
815ecf8d JS |
1728 | unsigned int mask = (1 << fls(max)) - 1; |
1729 | unsigned int invert = mc->invert; | |
db2a4165 FM |
1730 | unsigned short val, val2, val_mask; |
1731 | ||
1732 | val = (ucontrol->value.integer.value[0] & mask); | |
1733 | if (invert) | |
a7a4ac86 | 1734 | val = max - val; |
db2a4165 FM |
1735 | val_mask = mask << shift; |
1736 | val = val << shift; | |
1737 | if (shift != rshift) { | |
1738 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1739 | if (invert) | |
a7a4ac86 | 1740 | val2 = max - val2; |
db2a4165 FM |
1741 | val_mask |= mask << rshift; |
1742 | val |= val2 << rshift; | |
1743 | } | |
a7a4ac86 | 1744 | return snd_soc_update_bits(codec, reg, val_mask, val); |
db2a4165 FM |
1745 | } |
1746 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw); | |
1747 | ||
1748 | /** | |
1749 | * snd_soc_info_volsw_2r - double mixer info callback | |
1750 | * @kcontrol: mixer control | |
1751 | * @uinfo: control element information | |
1752 | * | |
1753 | * Callback to provide information about a double mixer control that | |
1754 | * spans 2 codec registers. | |
1755 | * | |
1756 | * Returns 0 for success. | |
1757 | */ | |
1758 | int snd_soc_info_volsw_2r(struct snd_kcontrol *kcontrol, | |
1759 | struct snd_ctl_elem_info *uinfo) | |
1760 | { | |
4eaa9819 JS |
1761 | struct soc_mixer_control *mc = |
1762 | (struct soc_mixer_control *)kcontrol->private_value; | |
1763 | int max = mc->max; | |
a7a4ac86 PZ |
1764 | |
1765 | if (max == 1) | |
1766 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1767 | else | |
1768 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
db2a4165 | 1769 | |
db2a4165 FM |
1770 | uinfo->count = 2; |
1771 | uinfo->value.integer.min = 0; | |
a7a4ac86 | 1772 | uinfo->value.integer.max = max; |
db2a4165 FM |
1773 | return 0; |
1774 | } | |
1775 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r); | |
1776 | ||
1777 | /** | |
1778 | * snd_soc_get_volsw_2r - double mixer get callback | |
1779 | * @kcontrol: mixer control | |
ac11a2b3 | 1780 | * @ucontrol: control element information |
db2a4165 FM |
1781 | * |
1782 | * Callback to get the value of a double mixer control that spans 2 registers. | |
1783 | * | |
1784 | * Returns 0 for success. | |
1785 | */ | |
1786 | int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol, | |
1787 | struct snd_ctl_elem_value *ucontrol) | |
1788 | { | |
4eaa9819 JS |
1789 | struct soc_mixer_control *mc = |
1790 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 1791 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
1792 | unsigned int reg = mc->reg; |
1793 | unsigned int reg2 = mc->rreg; | |
1794 | unsigned int shift = mc->shift; | |
4eaa9819 | 1795 | int max = mc->max; |
815ecf8d JS |
1796 | unsigned int mask = (1<<fls(max))-1; |
1797 | unsigned int invert = mc->invert; | |
db2a4165 FM |
1798 | |
1799 | ucontrol->value.integer.value[0] = | |
1800 | (snd_soc_read(codec, reg) >> shift) & mask; | |
1801 | ucontrol->value.integer.value[1] = | |
1802 | (snd_soc_read(codec, reg2) >> shift) & mask; | |
1803 | if (invert) { | |
1804 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1805 | max - ucontrol->value.integer.value[0]; |
db2a4165 | 1806 | ucontrol->value.integer.value[1] = |
a7a4ac86 | 1807 | max - ucontrol->value.integer.value[1]; |
db2a4165 FM |
1808 | } |
1809 | ||
1810 | return 0; | |
1811 | } | |
1812 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r); | |
1813 | ||
1814 | /** | |
1815 | * snd_soc_put_volsw_2r - double mixer set callback | |
1816 | * @kcontrol: mixer control | |
ac11a2b3 | 1817 | * @ucontrol: control element information |
db2a4165 FM |
1818 | * |
1819 | * Callback to set the value of a double mixer control that spans 2 registers. | |
1820 | * | |
1821 | * Returns 0 for success. | |
1822 | */ | |
1823 | int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol, | |
1824 | struct snd_ctl_elem_value *ucontrol) | |
1825 | { | |
4eaa9819 JS |
1826 | struct soc_mixer_control *mc = |
1827 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 1828 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
1829 | unsigned int reg = mc->reg; |
1830 | unsigned int reg2 = mc->rreg; | |
1831 | unsigned int shift = mc->shift; | |
4eaa9819 | 1832 | int max = mc->max; |
815ecf8d JS |
1833 | unsigned int mask = (1 << fls(max)) - 1; |
1834 | unsigned int invert = mc->invert; | |
db2a4165 FM |
1835 | int err; |
1836 | unsigned short val, val2, val_mask; | |
1837 | ||
1838 | val_mask = mask << shift; | |
1839 | val = (ucontrol->value.integer.value[0] & mask); | |
1840 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1841 | ||
1842 | if (invert) { | |
a7a4ac86 PZ |
1843 | val = max - val; |
1844 | val2 = max - val2; | |
db2a4165 FM |
1845 | } |
1846 | ||
1847 | val = val << shift; | |
1848 | val2 = val2 << shift; | |
1849 | ||
3ff3f64b MB |
1850 | err = snd_soc_update_bits(codec, reg, val_mask, val); |
1851 | if (err < 0) | |
db2a4165 FM |
1852 | return err; |
1853 | ||
1854 | err = snd_soc_update_bits(codec, reg2, val_mask, val2); | |
1855 | return err; | |
1856 | } | |
1857 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r); | |
1858 | ||
e13ac2e9 MB |
1859 | /** |
1860 | * snd_soc_info_volsw_s8 - signed mixer info callback | |
1861 | * @kcontrol: mixer control | |
1862 | * @uinfo: control element information | |
1863 | * | |
1864 | * Callback to provide information about a signed mixer control. | |
1865 | * | |
1866 | * Returns 0 for success. | |
1867 | */ | |
1868 | int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol, | |
1869 | struct snd_ctl_elem_info *uinfo) | |
1870 | { | |
4eaa9819 JS |
1871 | struct soc_mixer_control *mc = |
1872 | (struct soc_mixer_control *)kcontrol->private_value; | |
1873 | int max = mc->max; | |
1874 | int min = mc->min; | |
e13ac2e9 MB |
1875 | |
1876 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
1877 | uinfo->count = 2; | |
1878 | uinfo->value.integer.min = 0; | |
1879 | uinfo->value.integer.max = max-min; | |
1880 | return 0; | |
1881 | } | |
1882 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8); | |
1883 | ||
1884 | /** | |
1885 | * snd_soc_get_volsw_s8 - signed mixer get callback | |
1886 | * @kcontrol: mixer control | |
ac11a2b3 | 1887 | * @ucontrol: control element information |
e13ac2e9 MB |
1888 | * |
1889 | * Callback to get the value of a signed mixer control. | |
1890 | * | |
1891 | * Returns 0 for success. | |
1892 | */ | |
1893 | int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol, | |
1894 | struct snd_ctl_elem_value *ucontrol) | |
1895 | { | |
4eaa9819 JS |
1896 | struct soc_mixer_control *mc = |
1897 | (struct soc_mixer_control *)kcontrol->private_value; | |
e13ac2e9 | 1898 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d | 1899 | unsigned int reg = mc->reg; |
4eaa9819 | 1900 | int min = mc->min; |
e13ac2e9 MB |
1901 | int val = snd_soc_read(codec, reg); |
1902 | ||
1903 | ucontrol->value.integer.value[0] = | |
1904 | ((signed char)(val & 0xff))-min; | |
1905 | ucontrol->value.integer.value[1] = | |
1906 | ((signed char)((val >> 8) & 0xff))-min; | |
1907 | return 0; | |
1908 | } | |
1909 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8); | |
1910 | ||
1911 | /** | |
1912 | * snd_soc_put_volsw_sgn - signed mixer put callback | |
1913 | * @kcontrol: mixer control | |
ac11a2b3 | 1914 | * @ucontrol: control element information |
e13ac2e9 MB |
1915 | * |
1916 | * Callback to set the value of a signed mixer control. | |
1917 | * | |
1918 | * Returns 0 for success. | |
1919 | */ | |
1920 | int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol, | |
1921 | struct snd_ctl_elem_value *ucontrol) | |
1922 | { | |
4eaa9819 JS |
1923 | struct soc_mixer_control *mc = |
1924 | (struct soc_mixer_control *)kcontrol->private_value; | |
e13ac2e9 | 1925 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d | 1926 | unsigned int reg = mc->reg; |
4eaa9819 | 1927 | int min = mc->min; |
e13ac2e9 MB |
1928 | unsigned short val; |
1929 | ||
1930 | val = (ucontrol->value.integer.value[0]+min) & 0xff; | |
1931 | val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8; | |
1932 | ||
1933 | return snd_soc_update_bits(codec, reg, 0xffff, val); | |
1934 | } | |
1935 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8); | |
1936 | ||
8c6529db LG |
1937 | /** |
1938 | * snd_soc_dai_set_sysclk - configure DAI system or master clock. | |
1939 | * @dai: DAI | |
1940 | * @clk_id: DAI specific clock ID | |
1941 | * @freq: new clock frequency in Hz | |
1942 | * @dir: new clock direction - input/output. | |
1943 | * | |
1944 | * Configures the DAI master (MCLK) or system (SYSCLK) clocking. | |
1945 | */ | |
1946 | int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id, | |
1947 | unsigned int freq, int dir) | |
1948 | { | |
dee89c4d MB |
1949 | if (dai->ops.set_sysclk) |
1950 | return dai->ops.set_sysclk(dai, clk_id, freq, dir); | |
8c6529db LG |
1951 | else |
1952 | return -EINVAL; | |
1953 | } | |
1954 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk); | |
1955 | ||
1956 | /** | |
1957 | * snd_soc_dai_set_clkdiv - configure DAI clock dividers. | |
1958 | * @dai: DAI | |
ac11a2b3 | 1959 | * @div_id: DAI specific clock divider ID |
8c6529db LG |
1960 | * @div: new clock divisor. |
1961 | * | |
1962 | * Configures the clock dividers. This is used to derive the best DAI bit and | |
1963 | * frame clocks from the system or master clock. It's best to set the DAI bit | |
1964 | * and frame clocks as low as possible to save system power. | |
1965 | */ | |
1966 | int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai, | |
1967 | int div_id, int div) | |
1968 | { | |
dee89c4d MB |
1969 | if (dai->ops.set_clkdiv) |
1970 | return dai->ops.set_clkdiv(dai, div_id, div); | |
8c6529db LG |
1971 | else |
1972 | return -EINVAL; | |
1973 | } | |
1974 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv); | |
1975 | ||
1976 | /** | |
1977 | * snd_soc_dai_set_pll - configure DAI PLL. | |
1978 | * @dai: DAI | |
1979 | * @pll_id: DAI specific PLL ID | |
1980 | * @freq_in: PLL input clock frequency in Hz | |
1981 | * @freq_out: requested PLL output clock frequency in Hz | |
1982 | * | |
1983 | * Configures and enables PLL to generate output clock based on input clock. | |
1984 | */ | |
1985 | int snd_soc_dai_set_pll(struct snd_soc_dai *dai, | |
1986 | int pll_id, unsigned int freq_in, unsigned int freq_out) | |
1987 | { | |
dee89c4d MB |
1988 | if (dai->ops.set_pll) |
1989 | return dai->ops.set_pll(dai, pll_id, freq_in, freq_out); | |
8c6529db LG |
1990 | else |
1991 | return -EINVAL; | |
1992 | } | |
1993 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll); | |
1994 | ||
1995 | /** | |
1996 | * snd_soc_dai_set_fmt - configure DAI hardware audio format. | |
1997 | * @dai: DAI | |
8c6529db LG |
1998 | * @fmt: SND_SOC_DAIFMT_ format value. |
1999 | * | |
2000 | * Configures the DAI hardware format and clocking. | |
2001 | */ | |
2002 | int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) | |
2003 | { | |
dee89c4d MB |
2004 | if (dai->ops.set_fmt) |
2005 | return dai->ops.set_fmt(dai, fmt); | |
8c6529db LG |
2006 | else |
2007 | return -EINVAL; | |
2008 | } | |
2009 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt); | |
2010 | ||
2011 | /** | |
2012 | * snd_soc_dai_set_tdm_slot - configure DAI TDM. | |
2013 | * @dai: DAI | |
2014 | * @mask: DAI specific mask representing used slots. | |
2015 | * @slots: Number of slots in use. | |
2016 | * | |
2017 | * Configures a DAI for TDM operation. Both mask and slots are codec and DAI | |
2018 | * specific. | |
2019 | */ | |
2020 | int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai, | |
2021 | unsigned int mask, int slots) | |
2022 | { | |
dee89c4d MB |
2023 | if (dai->ops.set_sysclk) |
2024 | return dai->ops.set_tdm_slot(dai, mask, slots); | |
8c6529db LG |
2025 | else |
2026 | return -EINVAL; | |
2027 | } | |
2028 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot); | |
2029 | ||
2030 | /** | |
2031 | * snd_soc_dai_set_tristate - configure DAI system or master clock. | |
2032 | * @dai: DAI | |
2033 | * @tristate: tristate enable | |
2034 | * | |
2035 | * Tristates the DAI so that others can use it. | |
2036 | */ | |
2037 | int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate) | |
2038 | { | |
dee89c4d MB |
2039 | if (dai->ops.set_sysclk) |
2040 | return dai->ops.set_tristate(dai, tristate); | |
8c6529db LG |
2041 | else |
2042 | return -EINVAL; | |
2043 | } | |
2044 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate); | |
2045 | ||
2046 | /** | |
2047 | * snd_soc_dai_digital_mute - configure DAI system or master clock. | |
2048 | * @dai: DAI | |
2049 | * @mute: mute enable | |
2050 | * | |
2051 | * Mutes the DAI DAC. | |
2052 | */ | |
2053 | int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute) | |
2054 | { | |
dee89c4d MB |
2055 | if (dai->ops.digital_mute) |
2056 | return dai->ops.digital_mute(dai, mute); | |
8c6529db LG |
2057 | else |
2058 | return -EINVAL; | |
2059 | } | |
2060 | EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute); | |
2061 | ||
c5af3a2e MB |
2062 | /** |
2063 | * snd_soc_register_card - Register a card with the ASoC core | |
2064 | * | |
ac11a2b3 | 2065 | * @card: Card to register |
c5af3a2e MB |
2066 | * |
2067 | * Note that currently this is an internal only function: it will be | |
2068 | * exposed to machine drivers after further backporting of ASoC v2 | |
2069 | * registration APIs. | |
2070 | */ | |
2071 | static int snd_soc_register_card(struct snd_soc_card *card) | |
2072 | { | |
2073 | if (!card->name || !card->dev) | |
2074 | return -EINVAL; | |
2075 | ||
2076 | INIT_LIST_HEAD(&card->list); | |
2077 | card->instantiated = 0; | |
2078 | ||
2079 | mutex_lock(&client_mutex); | |
2080 | list_add(&card->list, &card_list); | |
435c5e25 | 2081 | snd_soc_instantiate_cards(); |
c5af3a2e MB |
2082 | mutex_unlock(&client_mutex); |
2083 | ||
2084 | dev_dbg(card->dev, "Registered card '%s'\n", card->name); | |
2085 | ||
2086 | return 0; | |
2087 | } | |
2088 | ||
2089 | /** | |
2090 | * snd_soc_unregister_card - Unregister a card with the ASoC core | |
2091 | * | |
ac11a2b3 | 2092 | * @card: Card to unregister |
c5af3a2e MB |
2093 | * |
2094 | * Note that currently this is an internal only function: it will be | |
2095 | * exposed to machine drivers after further backporting of ASoC v2 | |
2096 | * registration APIs. | |
2097 | */ | |
2098 | static int snd_soc_unregister_card(struct snd_soc_card *card) | |
2099 | { | |
2100 | mutex_lock(&client_mutex); | |
2101 | list_del(&card->list); | |
2102 | mutex_unlock(&client_mutex); | |
2103 | ||
2104 | dev_dbg(card->dev, "Unregistered card '%s'\n", card->name); | |
2105 | ||
2106 | return 0; | |
2107 | } | |
2108 | ||
9115171a MB |
2109 | /** |
2110 | * snd_soc_register_dai - Register a DAI with the ASoC core | |
2111 | * | |
ac11a2b3 | 2112 | * @dai: DAI to register |
9115171a MB |
2113 | */ |
2114 | int snd_soc_register_dai(struct snd_soc_dai *dai) | |
2115 | { | |
2116 | if (!dai->name) | |
2117 | return -EINVAL; | |
2118 | ||
2119 | /* The device should become mandatory over time */ | |
2120 | if (!dai->dev) | |
2121 | printk(KERN_WARNING "No device for DAI %s\n", dai->name); | |
2122 | ||
2123 | INIT_LIST_HEAD(&dai->list); | |
2124 | ||
2125 | mutex_lock(&client_mutex); | |
2126 | list_add(&dai->list, &dai_list); | |
435c5e25 | 2127 | snd_soc_instantiate_cards(); |
9115171a MB |
2128 | mutex_unlock(&client_mutex); |
2129 | ||
2130 | pr_debug("Registered DAI '%s'\n", dai->name); | |
2131 | ||
2132 | return 0; | |
2133 | } | |
2134 | EXPORT_SYMBOL_GPL(snd_soc_register_dai); | |
2135 | ||
2136 | /** | |
2137 | * snd_soc_unregister_dai - Unregister a DAI from the ASoC core | |
2138 | * | |
ac11a2b3 | 2139 | * @dai: DAI to unregister |
9115171a MB |
2140 | */ |
2141 | void snd_soc_unregister_dai(struct snd_soc_dai *dai) | |
2142 | { | |
2143 | mutex_lock(&client_mutex); | |
2144 | list_del(&dai->list); | |
2145 | mutex_unlock(&client_mutex); | |
2146 | ||
2147 | pr_debug("Unregistered DAI '%s'\n", dai->name); | |
2148 | } | |
2149 | EXPORT_SYMBOL_GPL(snd_soc_unregister_dai); | |
2150 | ||
2151 | /** | |
2152 | * snd_soc_register_dais - Register multiple DAIs with the ASoC core | |
2153 | * | |
ac11a2b3 MB |
2154 | * @dai: Array of DAIs to register |
2155 | * @count: Number of DAIs | |
9115171a MB |
2156 | */ |
2157 | int snd_soc_register_dais(struct snd_soc_dai *dai, size_t count) | |
2158 | { | |
2159 | int i, ret; | |
2160 | ||
2161 | for (i = 0; i < count; i++) { | |
2162 | ret = snd_soc_register_dai(&dai[i]); | |
2163 | if (ret != 0) | |
2164 | goto err; | |
2165 | } | |
2166 | ||
2167 | return 0; | |
2168 | ||
2169 | err: | |
2170 | for (i--; i >= 0; i--) | |
2171 | snd_soc_unregister_dai(&dai[i]); | |
2172 | ||
2173 | return ret; | |
2174 | } | |
2175 | EXPORT_SYMBOL_GPL(snd_soc_register_dais); | |
2176 | ||
2177 | /** | |
2178 | * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core | |
2179 | * | |
ac11a2b3 MB |
2180 | * @dai: Array of DAIs to unregister |
2181 | * @count: Number of DAIs | |
9115171a MB |
2182 | */ |
2183 | void snd_soc_unregister_dais(struct snd_soc_dai *dai, size_t count) | |
2184 | { | |
2185 | int i; | |
2186 | ||
2187 | for (i = 0; i < count; i++) | |
2188 | snd_soc_unregister_dai(&dai[i]); | |
2189 | } | |
2190 | EXPORT_SYMBOL_GPL(snd_soc_unregister_dais); | |
2191 | ||
12a48a8c MB |
2192 | /** |
2193 | * snd_soc_register_platform - Register a platform with the ASoC core | |
2194 | * | |
ac11a2b3 | 2195 | * @platform: platform to register |
12a48a8c MB |
2196 | */ |
2197 | int snd_soc_register_platform(struct snd_soc_platform *platform) | |
2198 | { | |
2199 | if (!platform->name) | |
2200 | return -EINVAL; | |
2201 | ||
2202 | INIT_LIST_HEAD(&platform->list); | |
2203 | ||
2204 | mutex_lock(&client_mutex); | |
2205 | list_add(&platform->list, &platform_list); | |
435c5e25 | 2206 | snd_soc_instantiate_cards(); |
12a48a8c MB |
2207 | mutex_unlock(&client_mutex); |
2208 | ||
2209 | pr_debug("Registered platform '%s'\n", platform->name); | |
2210 | ||
2211 | return 0; | |
2212 | } | |
2213 | EXPORT_SYMBOL_GPL(snd_soc_register_platform); | |
2214 | ||
2215 | /** | |
2216 | * snd_soc_unregister_platform - Unregister a platform from the ASoC core | |
2217 | * | |
ac11a2b3 | 2218 | * @platform: platform to unregister |
12a48a8c MB |
2219 | */ |
2220 | void snd_soc_unregister_platform(struct snd_soc_platform *platform) | |
2221 | { | |
2222 | mutex_lock(&client_mutex); | |
2223 | list_del(&platform->list); | |
2224 | mutex_unlock(&client_mutex); | |
2225 | ||
2226 | pr_debug("Unregistered platform '%s'\n", platform->name); | |
2227 | } | |
2228 | EXPORT_SYMBOL_GPL(snd_soc_unregister_platform); | |
2229 | ||
0d0cf00a MB |
2230 | /** |
2231 | * snd_soc_register_codec - Register a codec with the ASoC core | |
2232 | * | |
ac11a2b3 | 2233 | * @codec: codec to register |
0d0cf00a MB |
2234 | */ |
2235 | int snd_soc_register_codec(struct snd_soc_codec *codec) | |
2236 | { | |
2237 | if (!codec->name) | |
2238 | return -EINVAL; | |
2239 | ||
2240 | /* The device should become mandatory over time */ | |
2241 | if (!codec->dev) | |
2242 | printk(KERN_WARNING "No device for codec %s\n", codec->name); | |
2243 | ||
2244 | INIT_LIST_HEAD(&codec->list); | |
2245 | ||
2246 | mutex_lock(&client_mutex); | |
2247 | list_add(&codec->list, &codec_list); | |
2248 | snd_soc_instantiate_cards(); | |
2249 | mutex_unlock(&client_mutex); | |
2250 | ||
2251 | pr_debug("Registered codec '%s'\n", codec->name); | |
2252 | ||
2253 | return 0; | |
2254 | } | |
2255 | EXPORT_SYMBOL_GPL(snd_soc_register_codec); | |
2256 | ||
2257 | /** | |
2258 | * snd_soc_unregister_codec - Unregister a codec from the ASoC core | |
2259 | * | |
ac11a2b3 | 2260 | * @codec: codec to unregister |
0d0cf00a MB |
2261 | */ |
2262 | void snd_soc_unregister_codec(struct snd_soc_codec *codec) | |
2263 | { | |
2264 | mutex_lock(&client_mutex); | |
2265 | list_del(&codec->list); | |
2266 | mutex_unlock(&client_mutex); | |
2267 | ||
2268 | pr_debug("Unregistered codec '%s'\n", codec->name); | |
2269 | } | |
2270 | EXPORT_SYMBOL_GPL(snd_soc_unregister_codec); | |
2271 | ||
c9b3a40f | 2272 | static int __init snd_soc_init(void) |
db2a4165 | 2273 | { |
384c89e2 MB |
2274 | #ifdef CONFIG_DEBUG_FS |
2275 | debugfs_root = debugfs_create_dir("asoc", NULL); | |
2276 | if (IS_ERR(debugfs_root) || !debugfs_root) { | |
2277 | printk(KERN_WARNING | |
2278 | "ASoC: Failed to create debugfs directory\n"); | |
2279 | debugfs_root = NULL; | |
2280 | } | |
2281 | #endif | |
2282 | ||
db2a4165 FM |
2283 | return platform_driver_register(&soc_driver); |
2284 | } | |
2285 | ||
7d8c16a6 | 2286 | static void __exit snd_soc_exit(void) |
db2a4165 | 2287 | { |
384c89e2 MB |
2288 | #ifdef CONFIG_DEBUG_FS |
2289 | debugfs_remove_recursive(debugfs_root); | |
2290 | #endif | |
3ff3f64b | 2291 | platform_driver_unregister(&soc_driver); |
db2a4165 FM |
2292 | } |
2293 | ||
2294 | module_init(snd_soc_init); | |
2295 | module_exit(snd_soc_exit); | |
2296 | ||
2297 | /* Module information */ | |
d331124d | 2298 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
db2a4165 FM |
2299 | MODULE_DESCRIPTION("ALSA SoC Core"); |
2300 | MODULE_LICENSE("GPL"); | |
8b45a209 | 2301 | MODULE_ALIAS("platform:soc-audio"); |