Commit | Line | Data |
---|---|---|
db2a4165 FM |
1 | /* |
2 | * soc-core.c -- ALSA SoC Audio Layer | |
3 | * | |
4 | * Copyright 2005 Wolfson Microelectronics PLC. | |
0664d888 LG |
5 | * Copyright 2005 Openedhand Ltd. |
6 | * | |
d331124d | 7 | * Author: Liam Girdwood <lrg@slimlogic.co.uk> |
0664d888 LG |
8 | * with code, comments and ideas from :- |
9 | * Richard Purdie <richard@openedhand.com> | |
db2a4165 FM |
10 | * |
11 | * This program is free software; you can redistribute it and/or modify it | |
12 | * under the terms of the GNU General Public License as published by the | |
13 | * Free Software Foundation; either version 2 of the License, or (at your | |
14 | * option) any later version. | |
15 | * | |
db2a4165 FM |
16 | * TODO: |
17 | * o Add hw rules to enforce rates, etc. | |
18 | * o More testing with other codecs/machines. | |
19 | * o Add more codecs and platforms to ensure good API coverage. | |
20 | * o Support TDM on PCM and I2S | |
21 | */ | |
22 | ||
23 | #include <linux/module.h> | |
24 | #include <linux/moduleparam.h> | |
25 | #include <linux/init.h> | |
26 | #include <linux/delay.h> | |
27 | #include <linux/pm.h> | |
28 | #include <linux/bitops.h> | |
12ef193d | 29 | #include <linux/debugfs.h> |
db2a4165 | 30 | #include <linux/platform_device.h> |
db2a4165 FM |
31 | #include <sound/core.h> |
32 | #include <sound/pcm.h> | |
33 | #include <sound/pcm_params.h> | |
34 | #include <sound/soc.h> | |
35 | #include <sound/soc-dapm.h> | |
36 | #include <sound/initval.h> | |
37 | ||
db2a4165 FM |
38 | static DEFINE_MUTEX(pcm_mutex); |
39 | static DEFINE_MUTEX(io_mutex); | |
db2a4165 FM |
40 | static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq); |
41 | ||
384c89e2 MB |
42 | #ifdef CONFIG_DEBUG_FS |
43 | static struct dentry *debugfs_root; | |
44 | #endif | |
45 | ||
c5af3a2e MB |
46 | static DEFINE_MUTEX(client_mutex); |
47 | static LIST_HEAD(card_list); | |
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 |
14fa43f5 MB |
1388 | /* Only instantiate AC97 if not already done by the adaptor |
1389 | * for the generic AC97 subsystem. | |
1390 | */ | |
1391 | if (ac97 && strcmp(codec->name, "AC97") != 0) { | |
12e74f7d LG |
1392 | ret = soc_ac97_dev_register(codec); |
1393 | if (ret < 0) { | |
1394 | printk(KERN_ERR "asoc: AC97 device register failed\n"); | |
1395 | snd_card_free(codec->card); | |
08c8efe6 | 1396 | mutex_unlock(&codec->mutex); |
12e74f7d LG |
1397 | goto out; |
1398 | } | |
1399 | } | |
db2a4165 FM |
1400 | #endif |
1401 | ||
12e74f7d LG |
1402 | err = snd_soc_dapm_sys_add(socdev->dev); |
1403 | if (err < 0) | |
1404 | printk(KERN_WARNING "asoc: failed to add dapm sysfs entries\n"); | |
1405 | ||
1406 | err = device_create_file(socdev->dev, &dev_attr_codec_reg); | |
1407 | if (err < 0) | |
3ff3f64b | 1408 | printk(KERN_WARNING "asoc: failed to add codec sysfs files\n"); |
08c8efe6 | 1409 | |
384c89e2 | 1410 | soc_init_codec_debugfs(socdev->codec); |
db2a4165 | 1411 | mutex_unlock(&codec->mutex); |
08c8efe6 MB |
1412 | |
1413 | out: | |
db2a4165 FM |
1414 | return ret; |
1415 | } | |
968a6025 | 1416 | EXPORT_SYMBOL_GPL(snd_soc_init_card); |
db2a4165 FM |
1417 | |
1418 | /** | |
1419 | * snd_soc_free_pcms - free sound card and pcms | |
1420 | * @socdev: the SoC audio device | |
1421 | * | |
1422 | * Frees sound card and pcms associated with the socdev. | |
1423 | * Also unregister the codec if it is an AC97 device. | |
1424 | */ | |
1425 | void snd_soc_free_pcms(struct snd_soc_device *socdev) | |
1426 | { | |
1427 | struct snd_soc_codec *codec = socdev->codec; | |
a68660e0 | 1428 | #ifdef CONFIG_SND_SOC_AC97_BUS |
3c4b266f | 1429 | struct snd_soc_dai *codec_dai; |
a68660e0 LG |
1430 | int i; |
1431 | #endif | |
db2a4165 FM |
1432 | |
1433 | mutex_lock(&codec->mutex); | |
384c89e2 | 1434 | soc_cleanup_codec_debugfs(socdev->codec); |
db2a4165 | 1435 | #ifdef CONFIG_SND_SOC_AC97_BUS |
3ff3f64b | 1436 | for (i = 0; i < codec->num_dai; i++) { |
a68660e0 | 1437 | codec_dai = &codec->dai[i]; |
3ba9e10a | 1438 | if (codec_dai->ac97_control && codec->ac97) { |
a68660e0 LG |
1439 | soc_ac97_dev_unregister(codec); |
1440 | goto free_card; | |
1441 | } | |
1442 | } | |
1443 | free_card: | |
db2a4165 FM |
1444 | #endif |
1445 | ||
1446 | if (codec->card) | |
1447 | snd_card_free(codec->card); | |
1448 | device_remove_file(socdev->dev, &dev_attr_codec_reg); | |
1449 | mutex_unlock(&codec->mutex); | |
1450 | } | |
1451 | EXPORT_SYMBOL_GPL(snd_soc_free_pcms); | |
1452 | ||
1453 | /** | |
1454 | * snd_soc_set_runtime_hwparams - set the runtime hardware parameters | |
1455 | * @substream: the pcm substream | |
1456 | * @hw: the hardware parameters | |
1457 | * | |
1458 | * Sets the substream runtime hardware parameters. | |
1459 | */ | |
1460 | int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream, | |
1461 | const struct snd_pcm_hardware *hw) | |
1462 | { | |
1463 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1464 | runtime->hw.info = hw->info; | |
1465 | runtime->hw.formats = hw->formats; | |
1466 | runtime->hw.period_bytes_min = hw->period_bytes_min; | |
1467 | runtime->hw.period_bytes_max = hw->period_bytes_max; | |
1468 | runtime->hw.periods_min = hw->periods_min; | |
1469 | runtime->hw.periods_max = hw->periods_max; | |
1470 | runtime->hw.buffer_bytes_max = hw->buffer_bytes_max; | |
1471 | runtime->hw.fifo_size = hw->fifo_size; | |
1472 | return 0; | |
1473 | } | |
1474 | EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams); | |
1475 | ||
1476 | /** | |
1477 | * snd_soc_cnew - create new control | |
1478 | * @_template: control template | |
1479 | * @data: control private data | |
ac11a2b3 | 1480 | * @long_name: control long name |
db2a4165 FM |
1481 | * |
1482 | * Create a new mixer control from a template control. | |
1483 | * | |
1484 | * Returns 0 for success, else error. | |
1485 | */ | |
1486 | struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template, | |
1487 | void *data, char *long_name) | |
1488 | { | |
1489 | struct snd_kcontrol_new template; | |
1490 | ||
1491 | memcpy(&template, _template, sizeof(template)); | |
1492 | if (long_name) | |
1493 | template.name = long_name; | |
db2a4165 FM |
1494 | template.index = 0; |
1495 | ||
1496 | return snd_ctl_new1(&template, data); | |
1497 | } | |
1498 | EXPORT_SYMBOL_GPL(snd_soc_cnew); | |
1499 | ||
1500 | /** | |
1501 | * snd_soc_info_enum_double - enumerated double mixer info callback | |
1502 | * @kcontrol: mixer control | |
1503 | * @uinfo: control element information | |
1504 | * | |
1505 | * Callback to provide information about a double enumerated | |
1506 | * mixer control. | |
1507 | * | |
1508 | * Returns 0 for success. | |
1509 | */ | |
1510 | int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol, | |
1511 | struct snd_ctl_elem_info *uinfo) | |
1512 | { | |
1513 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1514 | ||
1515 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; | |
1516 | uinfo->count = e->shift_l == e->shift_r ? 1 : 2; | |
f8ba0b7b | 1517 | uinfo->value.enumerated.items = e->max; |
db2a4165 | 1518 | |
f8ba0b7b JS |
1519 | if (uinfo->value.enumerated.item > e->max - 1) |
1520 | uinfo->value.enumerated.item = e->max - 1; | |
db2a4165 FM |
1521 | strcpy(uinfo->value.enumerated.name, |
1522 | e->texts[uinfo->value.enumerated.item]); | |
1523 | return 0; | |
1524 | } | |
1525 | EXPORT_SYMBOL_GPL(snd_soc_info_enum_double); | |
1526 | ||
1527 | /** | |
1528 | * snd_soc_get_enum_double - enumerated double mixer get callback | |
1529 | * @kcontrol: mixer control | |
ac11a2b3 | 1530 | * @ucontrol: control element information |
db2a4165 FM |
1531 | * |
1532 | * Callback to get the value of a double enumerated mixer. | |
1533 | * | |
1534 | * Returns 0 for success. | |
1535 | */ | |
1536 | int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol, | |
1537 | struct snd_ctl_elem_value *ucontrol) | |
1538 | { | |
1539 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1540 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1541 | unsigned short val, bitmask; | |
1542 | ||
f8ba0b7b | 1543 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
db2a4165 FM |
1544 | ; |
1545 | val = snd_soc_read(codec, e->reg); | |
3ff3f64b MB |
1546 | ucontrol->value.enumerated.item[0] |
1547 | = (val >> e->shift_l) & (bitmask - 1); | |
db2a4165 FM |
1548 | if (e->shift_l != e->shift_r) |
1549 | ucontrol->value.enumerated.item[1] = | |
1550 | (val >> e->shift_r) & (bitmask - 1); | |
1551 | ||
1552 | return 0; | |
1553 | } | |
1554 | EXPORT_SYMBOL_GPL(snd_soc_get_enum_double); | |
1555 | ||
1556 | /** | |
1557 | * snd_soc_put_enum_double - enumerated double mixer put callback | |
1558 | * @kcontrol: mixer control | |
ac11a2b3 | 1559 | * @ucontrol: control element information |
db2a4165 FM |
1560 | * |
1561 | * Callback to set the value of a double enumerated mixer. | |
1562 | * | |
1563 | * Returns 0 for success. | |
1564 | */ | |
1565 | int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol, | |
1566 | struct snd_ctl_elem_value *ucontrol) | |
1567 | { | |
1568 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1569 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1570 | unsigned short val; | |
1571 | unsigned short mask, bitmask; | |
1572 | ||
f8ba0b7b | 1573 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
db2a4165 | 1574 | ; |
f8ba0b7b | 1575 | if (ucontrol->value.enumerated.item[0] > e->max - 1) |
db2a4165 FM |
1576 | return -EINVAL; |
1577 | val = ucontrol->value.enumerated.item[0] << e->shift_l; | |
1578 | mask = (bitmask - 1) << e->shift_l; | |
1579 | if (e->shift_l != e->shift_r) { | |
f8ba0b7b | 1580 | if (ucontrol->value.enumerated.item[1] > e->max - 1) |
db2a4165 FM |
1581 | return -EINVAL; |
1582 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
1583 | mask |= (bitmask - 1) << e->shift_r; | |
1584 | } | |
1585 | ||
1586 | return snd_soc_update_bits(codec, e->reg, mask, val); | |
1587 | } | |
1588 | EXPORT_SYMBOL_GPL(snd_soc_put_enum_double); | |
1589 | ||
2e72f8e3 PU |
1590 | /** |
1591 | * snd_soc_get_value_enum_double - semi enumerated double mixer get callback | |
1592 | * @kcontrol: mixer control | |
1593 | * @ucontrol: control element information | |
1594 | * | |
1595 | * Callback to get the value of a double semi enumerated mixer. | |
1596 | * | |
1597 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
1598 | * used for handling bitfield coded enumeration for example. | |
1599 | * | |
1600 | * Returns 0 for success. | |
1601 | */ | |
1602 | int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol, | |
1603 | struct snd_ctl_elem_value *ucontrol) | |
1604 | { | |
1605 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
74155556 | 1606 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
2e72f8e3 PU |
1607 | unsigned short reg_val, val, mux; |
1608 | ||
1609 | reg_val = snd_soc_read(codec, e->reg); | |
1610 | val = (reg_val >> e->shift_l) & e->mask; | |
1611 | for (mux = 0; mux < e->max; mux++) { | |
1612 | if (val == e->values[mux]) | |
1613 | break; | |
1614 | } | |
1615 | ucontrol->value.enumerated.item[0] = mux; | |
1616 | if (e->shift_l != e->shift_r) { | |
1617 | val = (reg_val >> e->shift_r) & e->mask; | |
1618 | for (mux = 0; mux < e->max; mux++) { | |
1619 | if (val == e->values[mux]) | |
1620 | break; | |
1621 | } | |
1622 | ucontrol->value.enumerated.item[1] = mux; | |
1623 | } | |
1624 | ||
1625 | return 0; | |
1626 | } | |
1627 | EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double); | |
1628 | ||
1629 | /** | |
1630 | * snd_soc_put_value_enum_double - semi enumerated double mixer put callback | |
1631 | * @kcontrol: mixer control | |
1632 | * @ucontrol: control element information | |
1633 | * | |
1634 | * Callback to set the value of a double semi enumerated mixer. | |
1635 | * | |
1636 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
1637 | * used for handling bitfield coded enumeration for example. | |
1638 | * | |
1639 | * Returns 0 for success. | |
1640 | */ | |
1641 | int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol, | |
1642 | struct snd_ctl_elem_value *ucontrol) | |
1643 | { | |
1644 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
74155556 | 1645 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
2e72f8e3 PU |
1646 | unsigned short val; |
1647 | unsigned short mask; | |
1648 | ||
1649 | if (ucontrol->value.enumerated.item[0] > e->max - 1) | |
1650 | return -EINVAL; | |
1651 | val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l; | |
1652 | mask = e->mask << e->shift_l; | |
1653 | if (e->shift_l != e->shift_r) { | |
1654 | if (ucontrol->value.enumerated.item[1] > e->max - 1) | |
1655 | return -EINVAL; | |
1656 | val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r; | |
1657 | mask |= e->mask << e->shift_r; | |
1658 | } | |
1659 | ||
1660 | return snd_soc_update_bits(codec, e->reg, mask, val); | |
1661 | } | |
1662 | EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double); | |
1663 | ||
db2a4165 FM |
1664 | /** |
1665 | * snd_soc_info_enum_ext - external enumerated single mixer info callback | |
1666 | * @kcontrol: mixer control | |
1667 | * @uinfo: control element information | |
1668 | * | |
1669 | * Callback to provide information about an external enumerated | |
1670 | * single mixer. | |
1671 | * | |
1672 | * Returns 0 for success. | |
1673 | */ | |
1674 | int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol, | |
1675 | struct snd_ctl_elem_info *uinfo) | |
1676 | { | |
1677 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1678 | ||
1679 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; | |
1680 | uinfo->count = 1; | |
f8ba0b7b | 1681 | uinfo->value.enumerated.items = e->max; |
db2a4165 | 1682 | |
f8ba0b7b JS |
1683 | if (uinfo->value.enumerated.item > e->max - 1) |
1684 | uinfo->value.enumerated.item = e->max - 1; | |
db2a4165 FM |
1685 | strcpy(uinfo->value.enumerated.name, |
1686 | e->texts[uinfo->value.enumerated.item]); | |
1687 | return 0; | |
1688 | } | |
1689 | EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext); | |
1690 | ||
1691 | /** | |
1692 | * snd_soc_info_volsw_ext - external single mixer info callback | |
1693 | * @kcontrol: mixer control | |
1694 | * @uinfo: control element information | |
1695 | * | |
1696 | * Callback to provide information about a single external mixer control. | |
1697 | * | |
1698 | * Returns 0 for success. | |
1699 | */ | |
1700 | int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol, | |
1701 | struct snd_ctl_elem_info *uinfo) | |
1702 | { | |
a7a4ac86 PZ |
1703 | int max = kcontrol->private_value; |
1704 | ||
1705 | if (max == 1) | |
1706 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1707 | else | |
1708 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
db2a4165 | 1709 | |
db2a4165 FM |
1710 | uinfo->count = 1; |
1711 | uinfo->value.integer.min = 0; | |
a7a4ac86 | 1712 | uinfo->value.integer.max = max; |
db2a4165 FM |
1713 | return 0; |
1714 | } | |
1715 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext); | |
1716 | ||
db2a4165 FM |
1717 | /** |
1718 | * snd_soc_info_volsw - single mixer info callback | |
1719 | * @kcontrol: mixer control | |
1720 | * @uinfo: control element information | |
1721 | * | |
1722 | * Callback to provide information about a single mixer control. | |
1723 | * | |
1724 | * Returns 0 for success. | |
1725 | */ | |
1726 | int snd_soc_info_volsw(struct snd_kcontrol *kcontrol, | |
1727 | struct snd_ctl_elem_info *uinfo) | |
1728 | { | |
4eaa9819 JS |
1729 | struct soc_mixer_control *mc = |
1730 | (struct soc_mixer_control *)kcontrol->private_value; | |
1731 | int max = mc->max; | |
762b8df7 | 1732 | unsigned int shift = mc->shift; |
815ecf8d | 1733 | unsigned int rshift = mc->rshift; |
db2a4165 | 1734 | |
a7a4ac86 PZ |
1735 | if (max == 1) |
1736 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1737 | else | |
1738 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
1739 | ||
db2a4165 FM |
1740 | uinfo->count = shift == rshift ? 1 : 2; |
1741 | uinfo->value.integer.min = 0; | |
a7a4ac86 | 1742 | uinfo->value.integer.max = max; |
db2a4165 FM |
1743 | return 0; |
1744 | } | |
1745 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw); | |
1746 | ||
1747 | /** | |
1748 | * snd_soc_get_volsw - single mixer get callback | |
1749 | * @kcontrol: mixer control | |
ac11a2b3 | 1750 | * @ucontrol: control element information |
db2a4165 FM |
1751 | * |
1752 | * Callback to get the value of a single mixer control. | |
1753 | * | |
1754 | * Returns 0 for success. | |
1755 | */ | |
1756 | int snd_soc_get_volsw(struct snd_kcontrol *kcontrol, | |
1757 | struct snd_ctl_elem_value *ucontrol) | |
1758 | { | |
4eaa9819 JS |
1759 | struct soc_mixer_control *mc = |
1760 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 1761 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
1762 | unsigned int reg = mc->reg; |
1763 | unsigned int shift = mc->shift; | |
1764 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1765 | int max = mc->max; |
815ecf8d JS |
1766 | unsigned int mask = (1 << fls(max)) - 1; |
1767 | unsigned int invert = mc->invert; | |
db2a4165 FM |
1768 | |
1769 | ucontrol->value.integer.value[0] = | |
1770 | (snd_soc_read(codec, reg) >> shift) & mask; | |
1771 | if (shift != rshift) | |
1772 | ucontrol->value.integer.value[1] = | |
1773 | (snd_soc_read(codec, reg) >> rshift) & mask; | |
1774 | if (invert) { | |
1775 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1776 | max - ucontrol->value.integer.value[0]; |
db2a4165 FM |
1777 | if (shift != rshift) |
1778 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 1779 | max - ucontrol->value.integer.value[1]; |
db2a4165 FM |
1780 | } |
1781 | ||
1782 | return 0; | |
1783 | } | |
1784 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw); | |
1785 | ||
1786 | /** | |
1787 | * snd_soc_put_volsw - single mixer put callback | |
1788 | * @kcontrol: mixer control | |
ac11a2b3 | 1789 | * @ucontrol: control element information |
db2a4165 FM |
1790 | * |
1791 | * Callback to set the value of a single mixer control. | |
1792 | * | |
1793 | * Returns 0 for success. | |
1794 | */ | |
1795 | int snd_soc_put_volsw(struct snd_kcontrol *kcontrol, | |
1796 | struct snd_ctl_elem_value *ucontrol) | |
1797 | { | |
4eaa9819 JS |
1798 | struct soc_mixer_control *mc = |
1799 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 1800 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
1801 | unsigned int reg = mc->reg; |
1802 | unsigned int shift = mc->shift; | |
1803 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1804 | int max = mc->max; |
815ecf8d JS |
1805 | unsigned int mask = (1 << fls(max)) - 1; |
1806 | unsigned int invert = mc->invert; | |
db2a4165 FM |
1807 | unsigned short val, val2, val_mask; |
1808 | ||
1809 | val = (ucontrol->value.integer.value[0] & mask); | |
1810 | if (invert) | |
a7a4ac86 | 1811 | val = max - val; |
db2a4165 FM |
1812 | val_mask = mask << shift; |
1813 | val = val << shift; | |
1814 | if (shift != rshift) { | |
1815 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1816 | if (invert) | |
a7a4ac86 | 1817 | val2 = max - val2; |
db2a4165 FM |
1818 | val_mask |= mask << rshift; |
1819 | val |= val2 << rshift; | |
1820 | } | |
a7a4ac86 | 1821 | return snd_soc_update_bits(codec, reg, val_mask, val); |
db2a4165 FM |
1822 | } |
1823 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw); | |
1824 | ||
1825 | /** | |
1826 | * snd_soc_info_volsw_2r - double mixer info callback | |
1827 | * @kcontrol: mixer control | |
1828 | * @uinfo: control element information | |
1829 | * | |
1830 | * Callback to provide information about a double mixer control that | |
1831 | * spans 2 codec registers. | |
1832 | * | |
1833 | * Returns 0 for success. | |
1834 | */ | |
1835 | int snd_soc_info_volsw_2r(struct snd_kcontrol *kcontrol, | |
1836 | struct snd_ctl_elem_info *uinfo) | |
1837 | { | |
4eaa9819 JS |
1838 | struct soc_mixer_control *mc = |
1839 | (struct soc_mixer_control *)kcontrol->private_value; | |
1840 | int max = mc->max; | |
a7a4ac86 PZ |
1841 | |
1842 | if (max == 1) | |
1843 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1844 | else | |
1845 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
db2a4165 | 1846 | |
db2a4165 FM |
1847 | uinfo->count = 2; |
1848 | uinfo->value.integer.min = 0; | |
a7a4ac86 | 1849 | uinfo->value.integer.max = max; |
db2a4165 FM |
1850 | return 0; |
1851 | } | |
1852 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r); | |
1853 | ||
1854 | /** | |
1855 | * snd_soc_get_volsw_2r - double mixer get callback | |
1856 | * @kcontrol: mixer control | |
ac11a2b3 | 1857 | * @ucontrol: control element information |
db2a4165 FM |
1858 | * |
1859 | * Callback to get the value of a double mixer control that spans 2 registers. | |
1860 | * | |
1861 | * Returns 0 for success. | |
1862 | */ | |
1863 | int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol, | |
1864 | struct snd_ctl_elem_value *ucontrol) | |
1865 | { | |
4eaa9819 JS |
1866 | struct soc_mixer_control *mc = |
1867 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 1868 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
1869 | unsigned int reg = mc->reg; |
1870 | unsigned int reg2 = mc->rreg; | |
1871 | unsigned int shift = mc->shift; | |
4eaa9819 | 1872 | int max = mc->max; |
815ecf8d JS |
1873 | unsigned int mask = (1<<fls(max))-1; |
1874 | unsigned int invert = mc->invert; | |
db2a4165 FM |
1875 | |
1876 | ucontrol->value.integer.value[0] = | |
1877 | (snd_soc_read(codec, reg) >> shift) & mask; | |
1878 | ucontrol->value.integer.value[1] = | |
1879 | (snd_soc_read(codec, reg2) >> shift) & mask; | |
1880 | if (invert) { | |
1881 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1882 | max - ucontrol->value.integer.value[0]; |
db2a4165 | 1883 | ucontrol->value.integer.value[1] = |
a7a4ac86 | 1884 | max - ucontrol->value.integer.value[1]; |
db2a4165 FM |
1885 | } |
1886 | ||
1887 | return 0; | |
1888 | } | |
1889 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r); | |
1890 | ||
1891 | /** | |
1892 | * snd_soc_put_volsw_2r - double mixer set callback | |
1893 | * @kcontrol: mixer control | |
ac11a2b3 | 1894 | * @ucontrol: control element information |
db2a4165 FM |
1895 | * |
1896 | * Callback to set the value of a double mixer control that spans 2 registers. | |
1897 | * | |
1898 | * Returns 0 for success. | |
1899 | */ | |
1900 | int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol, | |
1901 | struct snd_ctl_elem_value *ucontrol) | |
1902 | { | |
4eaa9819 JS |
1903 | struct soc_mixer_control *mc = |
1904 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 1905 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
1906 | unsigned int reg = mc->reg; |
1907 | unsigned int reg2 = mc->rreg; | |
1908 | unsigned int shift = mc->shift; | |
4eaa9819 | 1909 | int max = mc->max; |
815ecf8d JS |
1910 | unsigned int mask = (1 << fls(max)) - 1; |
1911 | unsigned int invert = mc->invert; | |
db2a4165 FM |
1912 | int err; |
1913 | unsigned short val, val2, val_mask; | |
1914 | ||
1915 | val_mask = mask << shift; | |
1916 | val = (ucontrol->value.integer.value[0] & mask); | |
1917 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1918 | ||
1919 | if (invert) { | |
a7a4ac86 PZ |
1920 | val = max - val; |
1921 | val2 = max - val2; | |
db2a4165 FM |
1922 | } |
1923 | ||
1924 | val = val << shift; | |
1925 | val2 = val2 << shift; | |
1926 | ||
3ff3f64b MB |
1927 | err = snd_soc_update_bits(codec, reg, val_mask, val); |
1928 | if (err < 0) | |
db2a4165 FM |
1929 | return err; |
1930 | ||
1931 | err = snd_soc_update_bits(codec, reg2, val_mask, val2); | |
1932 | return err; | |
1933 | } | |
1934 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r); | |
1935 | ||
e13ac2e9 MB |
1936 | /** |
1937 | * snd_soc_info_volsw_s8 - signed mixer info callback | |
1938 | * @kcontrol: mixer control | |
1939 | * @uinfo: control element information | |
1940 | * | |
1941 | * Callback to provide information about a signed mixer control. | |
1942 | * | |
1943 | * Returns 0 for success. | |
1944 | */ | |
1945 | int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol, | |
1946 | struct snd_ctl_elem_info *uinfo) | |
1947 | { | |
4eaa9819 JS |
1948 | struct soc_mixer_control *mc = |
1949 | (struct soc_mixer_control *)kcontrol->private_value; | |
1950 | int max = mc->max; | |
1951 | int min = mc->min; | |
e13ac2e9 MB |
1952 | |
1953 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
1954 | uinfo->count = 2; | |
1955 | uinfo->value.integer.min = 0; | |
1956 | uinfo->value.integer.max = max-min; | |
1957 | return 0; | |
1958 | } | |
1959 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8); | |
1960 | ||
1961 | /** | |
1962 | * snd_soc_get_volsw_s8 - signed mixer get callback | |
1963 | * @kcontrol: mixer control | |
ac11a2b3 | 1964 | * @ucontrol: control element information |
e13ac2e9 MB |
1965 | * |
1966 | * Callback to get the value of a signed mixer control. | |
1967 | * | |
1968 | * Returns 0 for success. | |
1969 | */ | |
1970 | int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol, | |
1971 | struct snd_ctl_elem_value *ucontrol) | |
1972 | { | |
4eaa9819 JS |
1973 | struct soc_mixer_control *mc = |
1974 | (struct soc_mixer_control *)kcontrol->private_value; | |
e13ac2e9 | 1975 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d | 1976 | unsigned int reg = mc->reg; |
4eaa9819 | 1977 | int min = mc->min; |
e13ac2e9 MB |
1978 | int val = snd_soc_read(codec, reg); |
1979 | ||
1980 | ucontrol->value.integer.value[0] = | |
1981 | ((signed char)(val & 0xff))-min; | |
1982 | ucontrol->value.integer.value[1] = | |
1983 | ((signed char)((val >> 8) & 0xff))-min; | |
1984 | return 0; | |
1985 | } | |
1986 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8); | |
1987 | ||
1988 | /** | |
1989 | * snd_soc_put_volsw_sgn - signed mixer put callback | |
1990 | * @kcontrol: mixer control | |
ac11a2b3 | 1991 | * @ucontrol: control element information |
e13ac2e9 MB |
1992 | * |
1993 | * Callback to set the value of a signed mixer control. | |
1994 | * | |
1995 | * Returns 0 for success. | |
1996 | */ | |
1997 | int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol, | |
1998 | struct snd_ctl_elem_value *ucontrol) | |
1999 | { | |
4eaa9819 JS |
2000 | struct soc_mixer_control *mc = |
2001 | (struct soc_mixer_control *)kcontrol->private_value; | |
e13ac2e9 | 2002 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d | 2003 | unsigned int reg = mc->reg; |
4eaa9819 | 2004 | int min = mc->min; |
e13ac2e9 MB |
2005 | unsigned short val; |
2006 | ||
2007 | val = (ucontrol->value.integer.value[0]+min) & 0xff; | |
2008 | val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8; | |
2009 | ||
2010 | return snd_soc_update_bits(codec, reg, 0xffff, val); | |
2011 | } | |
2012 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8); | |
2013 | ||
8c6529db LG |
2014 | /** |
2015 | * snd_soc_dai_set_sysclk - configure DAI system or master clock. | |
2016 | * @dai: DAI | |
2017 | * @clk_id: DAI specific clock ID | |
2018 | * @freq: new clock frequency in Hz | |
2019 | * @dir: new clock direction - input/output. | |
2020 | * | |
2021 | * Configures the DAI master (MCLK) or system (SYSCLK) clocking. | |
2022 | */ | |
2023 | int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id, | |
2024 | unsigned int freq, int dir) | |
2025 | { | |
dee89c4d MB |
2026 | if (dai->ops.set_sysclk) |
2027 | return dai->ops.set_sysclk(dai, clk_id, freq, dir); | |
8c6529db LG |
2028 | else |
2029 | return -EINVAL; | |
2030 | } | |
2031 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk); | |
2032 | ||
2033 | /** | |
2034 | * snd_soc_dai_set_clkdiv - configure DAI clock dividers. | |
2035 | * @dai: DAI | |
ac11a2b3 | 2036 | * @div_id: DAI specific clock divider ID |
8c6529db LG |
2037 | * @div: new clock divisor. |
2038 | * | |
2039 | * Configures the clock dividers. This is used to derive the best DAI bit and | |
2040 | * frame clocks from the system or master clock. It's best to set the DAI bit | |
2041 | * and frame clocks as low as possible to save system power. | |
2042 | */ | |
2043 | int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai, | |
2044 | int div_id, int div) | |
2045 | { | |
dee89c4d MB |
2046 | if (dai->ops.set_clkdiv) |
2047 | return dai->ops.set_clkdiv(dai, div_id, div); | |
8c6529db LG |
2048 | else |
2049 | return -EINVAL; | |
2050 | } | |
2051 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv); | |
2052 | ||
2053 | /** | |
2054 | * snd_soc_dai_set_pll - configure DAI PLL. | |
2055 | * @dai: DAI | |
2056 | * @pll_id: DAI specific PLL ID | |
2057 | * @freq_in: PLL input clock frequency in Hz | |
2058 | * @freq_out: requested PLL output clock frequency in Hz | |
2059 | * | |
2060 | * Configures and enables PLL to generate output clock based on input clock. | |
2061 | */ | |
2062 | int snd_soc_dai_set_pll(struct snd_soc_dai *dai, | |
2063 | int pll_id, unsigned int freq_in, unsigned int freq_out) | |
2064 | { | |
dee89c4d MB |
2065 | if (dai->ops.set_pll) |
2066 | return dai->ops.set_pll(dai, pll_id, freq_in, freq_out); | |
8c6529db LG |
2067 | else |
2068 | return -EINVAL; | |
2069 | } | |
2070 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll); | |
2071 | ||
2072 | /** | |
2073 | * snd_soc_dai_set_fmt - configure DAI hardware audio format. | |
2074 | * @dai: DAI | |
8c6529db LG |
2075 | * @fmt: SND_SOC_DAIFMT_ format value. |
2076 | * | |
2077 | * Configures the DAI hardware format and clocking. | |
2078 | */ | |
2079 | int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) | |
2080 | { | |
dee89c4d MB |
2081 | if (dai->ops.set_fmt) |
2082 | return dai->ops.set_fmt(dai, fmt); | |
8c6529db LG |
2083 | else |
2084 | return -EINVAL; | |
2085 | } | |
2086 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt); | |
2087 | ||
2088 | /** | |
2089 | * snd_soc_dai_set_tdm_slot - configure DAI TDM. | |
2090 | * @dai: DAI | |
2091 | * @mask: DAI specific mask representing used slots. | |
2092 | * @slots: Number of slots in use. | |
2093 | * | |
2094 | * Configures a DAI for TDM operation. Both mask and slots are codec and DAI | |
2095 | * specific. | |
2096 | */ | |
2097 | int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai, | |
2098 | unsigned int mask, int slots) | |
2099 | { | |
dee89c4d MB |
2100 | if (dai->ops.set_sysclk) |
2101 | return dai->ops.set_tdm_slot(dai, mask, slots); | |
8c6529db LG |
2102 | else |
2103 | return -EINVAL; | |
2104 | } | |
2105 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot); | |
2106 | ||
2107 | /** | |
2108 | * snd_soc_dai_set_tristate - configure DAI system or master clock. | |
2109 | * @dai: DAI | |
2110 | * @tristate: tristate enable | |
2111 | * | |
2112 | * Tristates the DAI so that others can use it. | |
2113 | */ | |
2114 | int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate) | |
2115 | { | |
dee89c4d MB |
2116 | if (dai->ops.set_sysclk) |
2117 | return dai->ops.set_tristate(dai, tristate); | |
8c6529db LG |
2118 | else |
2119 | return -EINVAL; | |
2120 | } | |
2121 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate); | |
2122 | ||
2123 | /** | |
2124 | * snd_soc_dai_digital_mute - configure DAI system or master clock. | |
2125 | * @dai: DAI | |
2126 | * @mute: mute enable | |
2127 | * | |
2128 | * Mutes the DAI DAC. | |
2129 | */ | |
2130 | int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute) | |
2131 | { | |
dee89c4d MB |
2132 | if (dai->ops.digital_mute) |
2133 | return dai->ops.digital_mute(dai, mute); | |
8c6529db LG |
2134 | else |
2135 | return -EINVAL; | |
2136 | } | |
2137 | EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute); | |
2138 | ||
c5af3a2e MB |
2139 | /** |
2140 | * snd_soc_register_card - Register a card with the ASoC core | |
2141 | * | |
ac11a2b3 | 2142 | * @card: Card to register |
c5af3a2e MB |
2143 | * |
2144 | * Note that currently this is an internal only function: it will be | |
2145 | * exposed to machine drivers after further backporting of ASoC v2 | |
2146 | * registration APIs. | |
2147 | */ | |
2148 | static int snd_soc_register_card(struct snd_soc_card *card) | |
2149 | { | |
2150 | if (!card->name || !card->dev) | |
2151 | return -EINVAL; | |
2152 | ||
2153 | INIT_LIST_HEAD(&card->list); | |
2154 | card->instantiated = 0; | |
2155 | ||
2156 | mutex_lock(&client_mutex); | |
2157 | list_add(&card->list, &card_list); | |
435c5e25 | 2158 | snd_soc_instantiate_cards(); |
c5af3a2e MB |
2159 | mutex_unlock(&client_mutex); |
2160 | ||
2161 | dev_dbg(card->dev, "Registered card '%s'\n", card->name); | |
2162 | ||
2163 | return 0; | |
2164 | } | |
2165 | ||
2166 | /** | |
2167 | * snd_soc_unregister_card - Unregister a card with the ASoC core | |
2168 | * | |
ac11a2b3 | 2169 | * @card: Card to unregister |
c5af3a2e MB |
2170 | * |
2171 | * Note that currently this is an internal only function: it will be | |
2172 | * exposed to machine drivers after further backporting of ASoC v2 | |
2173 | * registration APIs. | |
2174 | */ | |
2175 | static int snd_soc_unregister_card(struct snd_soc_card *card) | |
2176 | { | |
2177 | mutex_lock(&client_mutex); | |
2178 | list_del(&card->list); | |
2179 | mutex_unlock(&client_mutex); | |
2180 | ||
2181 | dev_dbg(card->dev, "Unregistered card '%s'\n", card->name); | |
2182 | ||
2183 | return 0; | |
2184 | } | |
2185 | ||
9115171a MB |
2186 | /** |
2187 | * snd_soc_register_dai - Register a DAI with the ASoC core | |
2188 | * | |
ac11a2b3 | 2189 | * @dai: DAI to register |
9115171a MB |
2190 | */ |
2191 | int snd_soc_register_dai(struct snd_soc_dai *dai) | |
2192 | { | |
2193 | if (!dai->name) | |
2194 | return -EINVAL; | |
2195 | ||
2196 | /* The device should become mandatory over time */ | |
2197 | if (!dai->dev) | |
2198 | printk(KERN_WARNING "No device for DAI %s\n", dai->name); | |
2199 | ||
2200 | INIT_LIST_HEAD(&dai->list); | |
2201 | ||
2202 | mutex_lock(&client_mutex); | |
2203 | list_add(&dai->list, &dai_list); | |
435c5e25 | 2204 | snd_soc_instantiate_cards(); |
9115171a MB |
2205 | mutex_unlock(&client_mutex); |
2206 | ||
2207 | pr_debug("Registered DAI '%s'\n", dai->name); | |
2208 | ||
2209 | return 0; | |
2210 | } | |
2211 | EXPORT_SYMBOL_GPL(snd_soc_register_dai); | |
2212 | ||
2213 | /** | |
2214 | * snd_soc_unregister_dai - Unregister a DAI from the ASoC core | |
2215 | * | |
ac11a2b3 | 2216 | * @dai: DAI to unregister |
9115171a MB |
2217 | */ |
2218 | void snd_soc_unregister_dai(struct snd_soc_dai *dai) | |
2219 | { | |
2220 | mutex_lock(&client_mutex); | |
2221 | list_del(&dai->list); | |
2222 | mutex_unlock(&client_mutex); | |
2223 | ||
2224 | pr_debug("Unregistered DAI '%s'\n", dai->name); | |
2225 | } | |
2226 | EXPORT_SYMBOL_GPL(snd_soc_unregister_dai); | |
2227 | ||
2228 | /** | |
2229 | * snd_soc_register_dais - Register multiple DAIs with the ASoC core | |
2230 | * | |
ac11a2b3 MB |
2231 | * @dai: Array of DAIs to register |
2232 | * @count: Number of DAIs | |
9115171a MB |
2233 | */ |
2234 | int snd_soc_register_dais(struct snd_soc_dai *dai, size_t count) | |
2235 | { | |
2236 | int i, ret; | |
2237 | ||
2238 | for (i = 0; i < count; i++) { | |
2239 | ret = snd_soc_register_dai(&dai[i]); | |
2240 | if (ret != 0) | |
2241 | goto err; | |
2242 | } | |
2243 | ||
2244 | return 0; | |
2245 | ||
2246 | err: | |
2247 | for (i--; i >= 0; i--) | |
2248 | snd_soc_unregister_dai(&dai[i]); | |
2249 | ||
2250 | return ret; | |
2251 | } | |
2252 | EXPORT_SYMBOL_GPL(snd_soc_register_dais); | |
2253 | ||
2254 | /** | |
2255 | * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core | |
2256 | * | |
ac11a2b3 MB |
2257 | * @dai: Array of DAIs to unregister |
2258 | * @count: Number of DAIs | |
9115171a MB |
2259 | */ |
2260 | void snd_soc_unregister_dais(struct snd_soc_dai *dai, size_t count) | |
2261 | { | |
2262 | int i; | |
2263 | ||
2264 | for (i = 0; i < count; i++) | |
2265 | snd_soc_unregister_dai(&dai[i]); | |
2266 | } | |
2267 | EXPORT_SYMBOL_GPL(snd_soc_unregister_dais); | |
2268 | ||
12a48a8c MB |
2269 | /** |
2270 | * snd_soc_register_platform - Register a platform with the ASoC core | |
2271 | * | |
ac11a2b3 | 2272 | * @platform: platform to register |
12a48a8c MB |
2273 | */ |
2274 | int snd_soc_register_platform(struct snd_soc_platform *platform) | |
2275 | { | |
2276 | if (!platform->name) | |
2277 | return -EINVAL; | |
2278 | ||
2279 | INIT_LIST_HEAD(&platform->list); | |
2280 | ||
2281 | mutex_lock(&client_mutex); | |
2282 | list_add(&platform->list, &platform_list); | |
435c5e25 | 2283 | snd_soc_instantiate_cards(); |
12a48a8c MB |
2284 | mutex_unlock(&client_mutex); |
2285 | ||
2286 | pr_debug("Registered platform '%s'\n", platform->name); | |
2287 | ||
2288 | return 0; | |
2289 | } | |
2290 | EXPORT_SYMBOL_GPL(snd_soc_register_platform); | |
2291 | ||
2292 | /** | |
2293 | * snd_soc_unregister_platform - Unregister a platform from the ASoC core | |
2294 | * | |
ac11a2b3 | 2295 | * @platform: platform to unregister |
12a48a8c MB |
2296 | */ |
2297 | void snd_soc_unregister_platform(struct snd_soc_platform *platform) | |
2298 | { | |
2299 | mutex_lock(&client_mutex); | |
2300 | list_del(&platform->list); | |
2301 | mutex_unlock(&client_mutex); | |
2302 | ||
2303 | pr_debug("Unregistered platform '%s'\n", platform->name); | |
2304 | } | |
2305 | EXPORT_SYMBOL_GPL(snd_soc_unregister_platform); | |
2306 | ||
0d0cf00a MB |
2307 | /** |
2308 | * snd_soc_register_codec - Register a codec with the ASoC core | |
2309 | * | |
ac11a2b3 | 2310 | * @codec: codec to register |
0d0cf00a MB |
2311 | */ |
2312 | int snd_soc_register_codec(struct snd_soc_codec *codec) | |
2313 | { | |
2314 | if (!codec->name) | |
2315 | return -EINVAL; | |
2316 | ||
2317 | /* The device should become mandatory over time */ | |
2318 | if (!codec->dev) | |
2319 | printk(KERN_WARNING "No device for codec %s\n", codec->name); | |
2320 | ||
2321 | INIT_LIST_HEAD(&codec->list); | |
2322 | ||
2323 | mutex_lock(&client_mutex); | |
2324 | list_add(&codec->list, &codec_list); | |
2325 | snd_soc_instantiate_cards(); | |
2326 | mutex_unlock(&client_mutex); | |
2327 | ||
2328 | pr_debug("Registered codec '%s'\n", codec->name); | |
2329 | ||
2330 | return 0; | |
2331 | } | |
2332 | EXPORT_SYMBOL_GPL(snd_soc_register_codec); | |
2333 | ||
2334 | /** | |
2335 | * snd_soc_unregister_codec - Unregister a codec from the ASoC core | |
2336 | * | |
ac11a2b3 | 2337 | * @codec: codec to unregister |
0d0cf00a MB |
2338 | */ |
2339 | void snd_soc_unregister_codec(struct snd_soc_codec *codec) | |
2340 | { | |
2341 | mutex_lock(&client_mutex); | |
2342 | list_del(&codec->list); | |
2343 | mutex_unlock(&client_mutex); | |
2344 | ||
2345 | pr_debug("Unregistered codec '%s'\n", codec->name); | |
2346 | } | |
2347 | EXPORT_SYMBOL_GPL(snd_soc_unregister_codec); | |
2348 | ||
c9b3a40f | 2349 | static int __init snd_soc_init(void) |
db2a4165 | 2350 | { |
384c89e2 MB |
2351 | #ifdef CONFIG_DEBUG_FS |
2352 | debugfs_root = debugfs_create_dir("asoc", NULL); | |
2353 | if (IS_ERR(debugfs_root) || !debugfs_root) { | |
2354 | printk(KERN_WARNING | |
2355 | "ASoC: Failed to create debugfs directory\n"); | |
2356 | debugfs_root = NULL; | |
2357 | } | |
2358 | #endif | |
2359 | ||
db2a4165 FM |
2360 | return platform_driver_register(&soc_driver); |
2361 | } | |
2362 | ||
7d8c16a6 | 2363 | static void __exit snd_soc_exit(void) |
db2a4165 | 2364 | { |
384c89e2 MB |
2365 | #ifdef CONFIG_DEBUG_FS |
2366 | debugfs_remove_recursive(debugfs_root); | |
2367 | #endif | |
3ff3f64b | 2368 | platform_driver_unregister(&soc_driver); |
db2a4165 FM |
2369 | } |
2370 | ||
2371 | module_init(snd_soc_init); | |
2372 | module_exit(snd_soc_exit); | |
2373 | ||
2374 | /* Module information */ | |
d331124d | 2375 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
db2a4165 FM |
2376 | MODULE_DESCRIPTION("ALSA SoC Core"); |
2377 | MODULE_LICENSE("GPL"); | |
8b45a209 | 2378 | MODULE_ALIAS("platform:soc-audio"); |