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 | * | |
db2a4165 FM |
7 | * Author: Liam Girdwood |
8 | * liam.girdwood@wolfsonmicro.com or linux@wolfsonmicro.com | |
0664d888 LG |
9 | * with code, comments and ideas from :- |
10 | * Richard Purdie <richard@openedhand.com> | |
db2a4165 FM |
11 | * |
12 | * This program is free software; you can redistribute it and/or modify it | |
13 | * under the terms of the GNU General Public License as published by the | |
14 | * Free Software Foundation; either version 2 of the License, or (at your | |
15 | * option) any later version. | |
16 | * | |
db2a4165 FM |
17 | * TODO: |
18 | * o Add hw rules to enforce rates, etc. | |
19 | * o More testing with other codecs/machines. | |
20 | * o Add more codecs and platforms to ensure good API coverage. | |
21 | * o Support TDM on PCM and I2S | |
22 | */ | |
23 | ||
24 | #include <linux/module.h> | |
25 | #include <linux/moduleparam.h> | |
26 | #include <linux/init.h> | |
27 | #include <linux/delay.h> | |
28 | #include <linux/pm.h> | |
29 | #include <linux/bitops.h> | |
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 | ||
38 | /* debug */ | |
39 | #define SOC_DEBUG 0 | |
40 | #if SOC_DEBUG | |
41 | #define dbg(format, arg...) printk(format, ## arg) | |
42 | #else | |
43 | #define dbg(format, arg...) | |
44 | #endif | |
a71a468a | 45 | |
db2a4165 FM |
46 | static DEFINE_MUTEX(pcm_mutex); |
47 | static DEFINE_MUTEX(io_mutex); | |
db2a4165 FM |
48 | static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq); |
49 | ||
db2a4165 FM |
50 | /* |
51 | * This is a timeout to do a DAPM powerdown after a stream is closed(). | |
52 | * It can be used to eliminate pops between different playback streams, e.g. | |
53 | * between two audio tracks. | |
54 | */ | |
55 | static int pmdown_time = 5000; | |
56 | module_param(pmdown_time, int, 0); | |
57 | MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)"); | |
58 | ||
965ac42c LG |
59 | /* |
60 | * This function forces any delayed work to be queued and run. | |
61 | */ | |
62 | static int run_delayed_work(struct delayed_work *dwork) | |
63 | { | |
64 | int ret; | |
65 | ||
66 | /* cancel any work waiting to be queued. */ | |
67 | ret = cancel_delayed_work(dwork); | |
68 | ||
69 | /* if there was any work waiting then we run it now and | |
70 | * wait for it's completion */ | |
71 | if (ret) { | |
72 | schedule_delayed_work(dwork, 0); | |
73 | flush_scheduled_work(); | |
74 | } | |
75 | return ret; | |
76 | } | |
77 | ||
db2a4165 FM |
78 | #ifdef CONFIG_SND_SOC_AC97_BUS |
79 | /* unregister ac97 codec */ | |
80 | static int soc_ac97_dev_unregister(struct snd_soc_codec *codec) | |
81 | { | |
82 | if (codec->ac97->dev.bus) | |
83 | device_unregister(&codec->ac97->dev); | |
84 | return 0; | |
85 | } | |
86 | ||
87 | /* stop no dev release warning */ | |
88 | static void soc_ac97_device_release(struct device *dev){} | |
89 | ||
90 | /* register ac97 codec to bus */ | |
91 | static int soc_ac97_dev_register(struct snd_soc_codec *codec) | |
92 | { | |
93 | int err; | |
94 | ||
95 | codec->ac97->dev.bus = &ac97_bus_type; | |
96 | codec->ac97->dev.parent = NULL; | |
97 | codec->ac97->dev.release = soc_ac97_device_release; | |
98 | ||
99 | snprintf(codec->ac97->dev.bus_id, BUS_ID_SIZE, "%d-%d:%s", | |
100 | codec->card->number, 0, codec->name); | |
101 | err = device_register(&codec->ac97->dev); | |
102 | if (err < 0) { | |
103 | snd_printk(KERN_ERR "Can't register ac97 bus\n"); | |
104 | codec->ac97->dev.bus = NULL; | |
105 | return err; | |
106 | } | |
107 | return 0; | |
108 | } | |
109 | #endif | |
110 | ||
3ff3f64b | 111 | static inline const char *get_dai_name(int type) |
db2a4165 | 112 | { |
3ff3f64b | 113 | switch (type) { |
a68660e0 | 114 | case SND_SOC_DAI_AC97_BUS: |
db2a4165 FM |
115 | case SND_SOC_DAI_AC97: |
116 | return "AC97"; | |
117 | case SND_SOC_DAI_I2S: | |
118 | return "I2S"; | |
119 | case SND_SOC_DAI_PCM: | |
120 | return "PCM"; | |
121 | } | |
122 | return NULL; | |
123 | } | |
124 | ||
db2a4165 FM |
125 | /* |
126 | * Called by ALSA when a PCM substream is opened, the runtime->hw record is | |
127 | * then initialized and any private data can be allocated. This also calls | |
128 | * startup for the cpu DAI, platform, machine and codec DAI. | |
129 | */ | |
130 | static int soc_pcm_open(struct snd_pcm_substream *substream) | |
131 | { | |
132 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
133 | struct snd_soc_device *socdev = rtd->socdev; | |
134 | struct snd_pcm_runtime *runtime = substream->runtime; | |
cb666e5b | 135 | struct snd_soc_dai_link *machine = rtd->dai; |
db2a4165 | 136 | struct snd_soc_platform *platform = socdev->platform; |
3c4b266f LG |
137 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
138 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
139 | int ret = 0; |
140 | ||
141 | mutex_lock(&pcm_mutex); | |
142 | ||
143 | /* startup the audio subsystem */ | |
cb666e5b LG |
144 | if (cpu_dai->ops.startup) { |
145 | ret = cpu_dai->ops.startup(substream); | |
db2a4165 FM |
146 | if (ret < 0) { |
147 | printk(KERN_ERR "asoc: can't open interface %s\n", | |
cb666e5b | 148 | cpu_dai->name); |
db2a4165 FM |
149 | goto out; |
150 | } | |
151 | } | |
152 | ||
153 | if (platform->pcm_ops->open) { | |
154 | ret = platform->pcm_ops->open(substream); | |
155 | if (ret < 0) { | |
156 | printk(KERN_ERR "asoc: can't open platform %s\n", platform->name); | |
157 | goto platform_err; | |
158 | } | |
159 | } | |
160 | ||
cb666e5b LG |
161 | if (codec_dai->ops.startup) { |
162 | ret = codec_dai->ops.startup(substream); | |
db2a4165 | 163 | if (ret < 0) { |
cb666e5b LG |
164 | printk(KERN_ERR "asoc: can't open codec %s\n", |
165 | codec_dai->name); | |
166 | goto codec_dai_err; | |
db2a4165 FM |
167 | } |
168 | } | |
169 | ||
cb666e5b LG |
170 | if (machine->ops && machine->ops->startup) { |
171 | ret = machine->ops->startup(substream); | |
db2a4165 | 172 | if (ret < 0) { |
cb666e5b LG |
173 | printk(KERN_ERR "asoc: %s startup failed\n", machine->name); |
174 | goto machine_err; | |
db2a4165 FM |
175 | } |
176 | } | |
177 | ||
db2a4165 FM |
178 | /* Check that the codec and cpu DAI's are compatible */ |
179 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
180 | runtime->hw.rate_min = | |
3ff3f64b MB |
181 | max(codec_dai->playback.rate_min, |
182 | cpu_dai->playback.rate_min); | |
db2a4165 | 183 | runtime->hw.rate_max = |
3ff3f64b MB |
184 | min(codec_dai->playback.rate_max, |
185 | cpu_dai->playback.rate_max); | |
db2a4165 | 186 | runtime->hw.channels_min = |
cb666e5b LG |
187 | max(codec_dai->playback.channels_min, |
188 | cpu_dai->playback.channels_min); | |
db2a4165 | 189 | runtime->hw.channels_max = |
cb666e5b LG |
190 | min(codec_dai->playback.channels_max, |
191 | cpu_dai->playback.channels_max); | |
192 | runtime->hw.formats = | |
193 | codec_dai->playback.formats & cpu_dai->playback.formats; | |
194 | runtime->hw.rates = | |
195 | codec_dai->playback.rates & cpu_dai->playback.rates; | |
db2a4165 FM |
196 | } else { |
197 | runtime->hw.rate_min = | |
3ff3f64b MB |
198 | max(codec_dai->capture.rate_min, |
199 | cpu_dai->capture.rate_min); | |
db2a4165 | 200 | runtime->hw.rate_max = |
3ff3f64b MB |
201 | min(codec_dai->capture.rate_max, |
202 | cpu_dai->capture.rate_max); | |
db2a4165 | 203 | runtime->hw.channels_min = |
cb666e5b LG |
204 | max(codec_dai->capture.channels_min, |
205 | cpu_dai->capture.channels_min); | |
db2a4165 | 206 | runtime->hw.channels_max = |
cb666e5b LG |
207 | min(codec_dai->capture.channels_max, |
208 | cpu_dai->capture.channels_max); | |
209 | runtime->hw.formats = | |
210 | codec_dai->capture.formats & cpu_dai->capture.formats; | |
211 | runtime->hw.rates = | |
212 | codec_dai->capture.rates & cpu_dai->capture.rates; | |
db2a4165 FM |
213 | } |
214 | ||
215 | snd_pcm_limit_hw_rates(runtime); | |
216 | if (!runtime->hw.rates) { | |
217 | printk(KERN_ERR "asoc: %s <-> %s No matching rates\n", | |
cb666e5b LG |
218 | codec_dai->name, cpu_dai->name); |
219 | goto machine_err; | |
db2a4165 FM |
220 | } |
221 | if (!runtime->hw.formats) { | |
222 | printk(KERN_ERR "asoc: %s <-> %s No matching formats\n", | |
cb666e5b LG |
223 | codec_dai->name, cpu_dai->name); |
224 | goto machine_err; | |
db2a4165 FM |
225 | } |
226 | if (!runtime->hw.channels_min || !runtime->hw.channels_max) { | |
227 | printk(KERN_ERR "asoc: %s <-> %s No matching channels\n", | |
cb666e5b LG |
228 | codec_dai->name, cpu_dai->name); |
229 | goto machine_err; | |
db2a4165 FM |
230 | } |
231 | ||
3ff3f64b | 232 | dbg("asoc: %s <-> %s info:\n", codec_dai->name, cpu_dai->name); |
b5c5fd24 LG |
233 | dbg("asoc: rate mask 0x%x\n", runtime->hw.rates); |
234 | dbg("asoc: min ch %d max ch %d\n", runtime->hw.channels_min, | |
235 | runtime->hw.channels_max); | |
236 | dbg("asoc: min rate %d max rate %d\n", runtime->hw.rate_min, | |
237 | runtime->hw.rate_max); | |
db2a4165 | 238 | |
db2a4165 | 239 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
cb666e5b | 240 | cpu_dai->playback.active = codec_dai->playback.active = 1; |
db2a4165 | 241 | else |
cb666e5b LG |
242 | cpu_dai->capture.active = codec_dai->capture.active = 1; |
243 | cpu_dai->active = codec_dai->active = 1; | |
244 | cpu_dai->runtime = runtime; | |
db2a4165 FM |
245 | socdev->codec->active++; |
246 | mutex_unlock(&pcm_mutex); | |
247 | return 0; | |
248 | ||
cb666e5b | 249 | machine_err: |
db2a4165 FM |
250 | if (machine->ops && machine->ops->shutdown) |
251 | machine->ops->shutdown(substream); | |
252 | ||
cb666e5b | 253 | codec_dai_err: |
db2a4165 FM |
254 | if (platform->pcm_ops->close) |
255 | platform->pcm_ops->close(substream); | |
256 | ||
257 | platform_err: | |
cb666e5b LG |
258 | if (cpu_dai->ops.shutdown) |
259 | cpu_dai->ops.shutdown(substream); | |
db2a4165 FM |
260 | out: |
261 | mutex_unlock(&pcm_mutex); | |
262 | return ret; | |
263 | } | |
264 | ||
265 | /* | |
3a4fa0a2 | 266 | * Power down the audio subsystem pmdown_time msecs after close is called. |
db2a4165 FM |
267 | * This is to ensure there are no pops or clicks in between any music tracks |
268 | * due to DAPM power cycling. | |
269 | */ | |
4484bb2e | 270 | static void close_delayed_work(struct work_struct *work) |
db2a4165 | 271 | { |
4484bb2e AM |
272 | struct snd_soc_device *socdev = |
273 | container_of(work, struct snd_soc_device, delayed_work.work); | |
db2a4165 | 274 | struct snd_soc_codec *codec = socdev->codec; |
3c4b266f | 275 | struct snd_soc_dai *codec_dai; |
db2a4165 FM |
276 | int i; |
277 | ||
278 | mutex_lock(&pcm_mutex); | |
3ff3f64b | 279 | for (i = 0; i < codec->num_dai; i++) { |
db2a4165 FM |
280 | codec_dai = &codec->dai[i]; |
281 | ||
282 | dbg("pop wq checking: %s status: %s waiting: %s\n", | |
283 | codec_dai->playback.stream_name, | |
284 | codec_dai->playback.active ? "active" : "inactive", | |
285 | codec_dai->pop_wait ? "yes" : "no"); | |
286 | ||
287 | /* are we waiting on this codec DAI stream */ | |
288 | if (codec_dai->pop_wait == 1) { | |
289 | ||
0be9898a | 290 | /* Reduce power if no longer active */ |
3c1c47e0 LG |
291 | if (codec->active == 0) { |
292 | dbg("pop wq D1 %s %s\n", codec->name, | |
293 | codec_dai->playback.stream_name); | |
0be9898a MB |
294 | snd_soc_dapm_set_bias_level(socdev, |
295 | SND_SOC_BIAS_PREPARE); | |
3c1c47e0 LG |
296 | } |
297 | ||
db2a4165 | 298 | codec_dai->pop_wait = 0; |
0b4d221b LG |
299 | snd_soc_dapm_stream_event(codec, |
300 | codec_dai->playback.stream_name, | |
db2a4165 FM |
301 | SND_SOC_DAPM_STREAM_STOP); |
302 | ||
0be9898a | 303 | /* Fall into standby if no longer active */ |
db2a4165 FM |
304 | if (codec->active == 0) { |
305 | dbg("pop wq D3 %s %s\n", codec->name, | |
306 | codec_dai->playback.stream_name); | |
0be9898a MB |
307 | snd_soc_dapm_set_bias_level(socdev, |
308 | SND_SOC_BIAS_STANDBY); | |
db2a4165 FM |
309 | } |
310 | } | |
311 | } | |
312 | mutex_unlock(&pcm_mutex); | |
313 | } | |
314 | ||
315 | /* | |
316 | * Called by ALSA when a PCM substream is closed. Private data can be | |
317 | * freed here. The cpu DAI, codec DAI, machine and platform are also | |
318 | * shutdown. | |
319 | */ | |
320 | static int soc_codec_close(struct snd_pcm_substream *substream) | |
321 | { | |
322 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
323 | struct snd_soc_device *socdev = rtd->socdev; | |
cb666e5b | 324 | struct snd_soc_dai_link *machine = rtd->dai; |
db2a4165 | 325 | struct snd_soc_platform *platform = socdev->platform; |
3c4b266f LG |
326 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
327 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
328 | struct snd_soc_codec *codec = socdev->codec; |
329 | ||
330 | mutex_lock(&pcm_mutex); | |
331 | ||
332 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
cb666e5b | 333 | cpu_dai->playback.active = codec_dai->playback.active = 0; |
db2a4165 | 334 | else |
cb666e5b | 335 | cpu_dai->capture.active = codec_dai->capture.active = 0; |
db2a4165 | 336 | |
cb666e5b LG |
337 | if (codec_dai->playback.active == 0 && |
338 | codec_dai->capture.active == 0) { | |
339 | cpu_dai->active = codec_dai->active = 0; | |
db2a4165 FM |
340 | } |
341 | codec->active--; | |
342 | ||
cb666e5b LG |
343 | if (cpu_dai->ops.shutdown) |
344 | cpu_dai->ops.shutdown(substream); | |
db2a4165 | 345 | |
cb666e5b LG |
346 | if (codec_dai->ops.shutdown) |
347 | codec_dai->ops.shutdown(substream); | |
db2a4165 FM |
348 | |
349 | if (machine->ops && machine->ops->shutdown) | |
350 | machine->ops->shutdown(substream); | |
351 | ||
352 | if (platform->pcm_ops->close) | |
353 | platform->pcm_ops->close(substream); | |
cb666e5b | 354 | cpu_dai->runtime = NULL; |
db2a4165 FM |
355 | |
356 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
357 | /* start delayed pop wq here for playback streams */ | |
cb666e5b | 358 | codec_dai->pop_wait = 1; |
4bb09523 | 359 | schedule_delayed_work(&socdev->delayed_work, |
db2a4165 FM |
360 | msecs_to_jiffies(pmdown_time)); |
361 | } else { | |
362 | /* capture streams can be powered down now */ | |
cb666e5b | 363 | snd_soc_dapm_stream_event(codec, |
0b4d221b LG |
364 | codec_dai->capture.stream_name, |
365 | SND_SOC_DAPM_STREAM_STOP); | |
db2a4165 | 366 | |
0b4d221b | 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; | |
cb666e5b | 385 | struct snd_soc_dai_link *machine = rtd->dai; |
db2a4165 | 386 | struct snd_soc_platform *platform = socdev->platform; |
3c4b266f LG |
387 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
388 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
389 | struct snd_soc_codec *codec = socdev->codec; |
390 | int ret = 0; | |
391 | ||
392 | mutex_lock(&pcm_mutex); | |
cb666e5b LG |
393 | |
394 | if (machine->ops && machine->ops->prepare) { | |
395 | ret = machine->ops->prepare(substream); | |
396 | if (ret < 0) { | |
397 | printk(KERN_ERR "asoc: machine prepare error\n"); | |
398 | goto out; | |
399 | } | |
400 | } | |
401 | ||
db2a4165 FM |
402 | if (platform->pcm_ops->prepare) { |
403 | ret = platform->pcm_ops->prepare(substream); | |
a71a468a LG |
404 | if (ret < 0) { |
405 | printk(KERN_ERR "asoc: platform prepare error\n"); | |
db2a4165 | 406 | goto out; |
a71a468a | 407 | } |
db2a4165 FM |
408 | } |
409 | ||
cb666e5b LG |
410 | if (codec_dai->ops.prepare) { |
411 | ret = codec_dai->ops.prepare(substream); | |
a71a468a LG |
412 | if (ret < 0) { |
413 | printk(KERN_ERR "asoc: codec DAI prepare error\n"); | |
db2a4165 | 414 | goto out; |
a71a468a | 415 | } |
db2a4165 FM |
416 | } |
417 | ||
cb666e5b LG |
418 | if (cpu_dai->ops.prepare) { |
419 | ret = cpu_dai->ops.prepare(substream); | |
420 | if (ret < 0) { | |
421 | printk(KERN_ERR "asoc: cpu DAI prepare error\n"); | |
422 | goto out; | |
423 | } | |
424 | } | |
db2a4165 FM |
425 | |
426 | /* we only want to start a DAPM playback stream if we are not waiting | |
427 | * on an existing one stopping */ | |
cb666e5b | 428 | if (codec_dai->pop_wait) { |
db2a4165 FM |
429 | /* we are waiting for the delayed work to start */ |
430 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
cb666e5b LG |
431 | snd_soc_dapm_stream_event(socdev->codec, |
432 | codec_dai->capture.stream_name, | |
db2a4165 FM |
433 | SND_SOC_DAPM_STREAM_START); |
434 | else { | |
cb666e5b | 435 | codec_dai->pop_wait = 0; |
4484bb2e | 436 | cancel_delayed_work(&socdev->delayed_work); |
8c6529db | 437 | snd_soc_dai_digital_mute(codec_dai, 0); |
db2a4165 FM |
438 | } |
439 | } else { | |
440 | /* no delayed work - do we need to power up codec */ | |
0be9898a | 441 | if (codec->bias_level != SND_SOC_BIAS_ON) { |
db2a4165 | 442 | |
0be9898a MB |
443 | snd_soc_dapm_set_bias_level(socdev, |
444 | SND_SOC_BIAS_PREPARE); | |
db2a4165 FM |
445 | |
446 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
447 | snd_soc_dapm_stream_event(codec, | |
cb666e5b | 448 | codec_dai->playback.stream_name, |
db2a4165 FM |
449 | SND_SOC_DAPM_STREAM_START); |
450 | else | |
451 | snd_soc_dapm_stream_event(codec, | |
cb666e5b | 452 | codec_dai->capture.stream_name, |
db2a4165 FM |
453 | SND_SOC_DAPM_STREAM_START); |
454 | ||
0be9898a | 455 | snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_ON); |
8c6529db | 456 | snd_soc_dai_digital_mute(codec_dai, 0); |
db2a4165 FM |
457 | |
458 | } else { | |
459 | /* codec already powered - power on widgets */ | |
460 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
461 | snd_soc_dapm_stream_event(codec, | |
cb666e5b | 462 | codec_dai->playback.stream_name, |
db2a4165 FM |
463 | SND_SOC_DAPM_STREAM_START); |
464 | else | |
465 | snd_soc_dapm_stream_event(codec, | |
cb666e5b | 466 | codec_dai->capture.stream_name, |
db2a4165 | 467 | SND_SOC_DAPM_STREAM_START); |
8c6529db LG |
468 | |
469 | snd_soc_dai_digital_mute(codec_dai, 0); | |
db2a4165 FM |
470 | } |
471 | } | |
472 | ||
473 | out: | |
474 | mutex_unlock(&pcm_mutex); | |
475 | return ret; | |
476 | } | |
477 | ||
478 | /* | |
479 | * Called by ALSA when the hardware params are set by application. This | |
480 | * function can also be called multiple times and can allocate buffers | |
481 | * (using snd_pcm_lib_* ). It's non-atomic. | |
482 | */ | |
483 | static int soc_pcm_hw_params(struct snd_pcm_substream *substream, | |
484 | struct snd_pcm_hw_params *params) | |
485 | { | |
486 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
487 | struct snd_soc_device *socdev = rtd->socdev; | |
cb666e5b | 488 | struct snd_soc_dai_link *machine = rtd->dai; |
db2a4165 | 489 | struct snd_soc_platform *platform = socdev->platform; |
3c4b266f LG |
490 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
491 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
492 | int ret = 0; |
493 | ||
494 | mutex_lock(&pcm_mutex); | |
495 | ||
cb666e5b LG |
496 | if (machine->ops && machine->ops->hw_params) { |
497 | ret = machine->ops->hw_params(substream, params); | |
498 | if (ret < 0) { | |
499 | printk(KERN_ERR "asoc: machine hw_params failed\n"); | |
db2a4165 | 500 | goto out; |
cb666e5b | 501 | } |
db2a4165 FM |
502 | } |
503 | ||
cb666e5b LG |
504 | if (codec_dai->ops.hw_params) { |
505 | ret = codec_dai->ops.hw_params(substream, params); | |
db2a4165 FM |
506 | if (ret < 0) { |
507 | printk(KERN_ERR "asoc: can't set codec %s hw params\n", | |
cb666e5b LG |
508 | codec_dai->name); |
509 | goto codec_err; | |
db2a4165 FM |
510 | } |
511 | } | |
512 | ||
cb666e5b LG |
513 | if (cpu_dai->ops.hw_params) { |
514 | ret = cpu_dai->ops.hw_params(substream, params); | |
db2a4165 | 515 | if (ret < 0) { |
3ff3f64b | 516 | printk(KERN_ERR "asoc: interface %s hw params failed\n", |
cb666e5b | 517 | cpu_dai->name); |
db2a4165 FM |
518 | goto interface_err; |
519 | } | |
520 | } | |
521 | ||
522 | if (platform->pcm_ops->hw_params) { | |
523 | ret = platform->pcm_ops->hw_params(substream, params); | |
524 | if (ret < 0) { | |
3ff3f64b | 525 | printk(KERN_ERR "asoc: platform %s hw params failed\n", |
db2a4165 FM |
526 | platform->name); |
527 | goto platform_err; | |
528 | } | |
529 | } | |
530 | ||
db2a4165 FM |
531 | out: |
532 | mutex_unlock(&pcm_mutex); | |
533 | return ret; | |
534 | ||
db2a4165 | 535 | platform_err: |
cb666e5b LG |
536 | if (cpu_dai->ops.hw_free) |
537 | cpu_dai->ops.hw_free(substream); | |
db2a4165 FM |
538 | |
539 | interface_err: | |
cb666e5b LG |
540 | if (codec_dai->ops.hw_free) |
541 | codec_dai->ops.hw_free(substream); | |
542 | ||
543 | codec_err: | |
3ff3f64b | 544 | if (machine->ops && machine->ops->hw_free) |
cb666e5b | 545 | machine->ops->hw_free(substream); |
db2a4165 FM |
546 | |
547 | mutex_unlock(&pcm_mutex); | |
548 | return ret; | |
549 | } | |
550 | ||
551 | /* | |
552 | * Free's resources allocated by hw_params, can be called multiple times | |
553 | */ | |
554 | static int soc_pcm_hw_free(struct snd_pcm_substream *substream) | |
555 | { | |
556 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
557 | struct snd_soc_device *socdev = rtd->socdev; | |
cb666e5b | 558 | struct snd_soc_dai_link *machine = rtd->dai; |
db2a4165 | 559 | struct snd_soc_platform *platform = socdev->platform; |
3c4b266f LG |
560 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
561 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 | 562 | struct snd_soc_codec *codec = socdev->codec; |
db2a4165 FM |
563 | |
564 | mutex_lock(&pcm_mutex); | |
565 | ||
566 | /* apply codec digital mute */ | |
8c6529db LG |
567 | if (!codec->active) |
568 | snd_soc_dai_digital_mute(codec_dai, 1); | |
db2a4165 FM |
569 | |
570 | /* free any machine hw params */ | |
571 | if (machine->ops && machine->ops->hw_free) | |
572 | machine->ops->hw_free(substream); | |
573 | ||
574 | /* free any DMA resources */ | |
575 | if (platform->pcm_ops->hw_free) | |
576 | platform->pcm_ops->hw_free(substream); | |
577 | ||
578 | /* now free hw params for the DAI's */ | |
cb666e5b LG |
579 | if (codec_dai->ops.hw_free) |
580 | codec_dai->ops.hw_free(substream); | |
db2a4165 | 581 | |
cb666e5b LG |
582 | if (cpu_dai->ops.hw_free) |
583 | cpu_dai->ops.hw_free(substream); | |
db2a4165 FM |
584 | |
585 | mutex_unlock(&pcm_mutex); | |
586 | return 0; | |
587 | } | |
588 | ||
589 | static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd) | |
590 | { | |
591 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
592 | struct snd_soc_device *socdev = rtd->socdev; | |
cb666e5b | 593 | struct snd_soc_dai_link *machine = rtd->dai; |
db2a4165 | 594 | struct snd_soc_platform *platform = socdev->platform; |
3c4b266f LG |
595 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
596 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
597 | int ret; |
598 | ||
cb666e5b LG |
599 | if (codec_dai->ops.trigger) { |
600 | ret = codec_dai->ops.trigger(substream, cmd); | |
db2a4165 FM |
601 | if (ret < 0) |
602 | return ret; | |
603 | } | |
604 | ||
605 | if (platform->pcm_ops->trigger) { | |
606 | ret = platform->pcm_ops->trigger(substream, cmd); | |
607 | if (ret < 0) | |
608 | return ret; | |
609 | } | |
610 | ||
cb666e5b LG |
611 | if (cpu_dai->ops.trigger) { |
612 | ret = cpu_dai->ops.trigger(substream, cmd); | |
db2a4165 FM |
613 | if (ret < 0) |
614 | return ret; | |
615 | } | |
616 | return 0; | |
617 | } | |
618 | ||
619 | /* ASoC PCM operations */ | |
620 | static struct snd_pcm_ops soc_pcm_ops = { | |
621 | .open = soc_pcm_open, | |
622 | .close = soc_codec_close, | |
623 | .hw_params = soc_pcm_hw_params, | |
624 | .hw_free = soc_pcm_hw_free, | |
625 | .prepare = soc_pcm_prepare, | |
626 | .trigger = soc_pcm_trigger, | |
627 | }; | |
628 | ||
629 | #ifdef CONFIG_PM | |
630 | /* powers down audio subsystem for suspend */ | |
631 | static int soc_suspend(struct platform_device *pdev, pm_message_t state) | |
632 | { | |
3ff3f64b MB |
633 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
634 | struct snd_soc_machine *machine = socdev->machine; | |
635 | struct snd_soc_platform *platform = socdev->platform; | |
636 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; | |
db2a4165 FM |
637 | struct snd_soc_codec *codec = socdev->codec; |
638 | int i; | |
639 | ||
6ed25978 AG |
640 | /* Due to the resume being scheduled into a workqueue we could |
641 | * suspend before that's finished - wait for it to complete. | |
642 | */ | |
643 | snd_power_lock(codec->card); | |
644 | snd_power_wait(codec->card, SNDRV_CTL_POWER_D0); | |
645 | snd_power_unlock(codec->card); | |
646 | ||
647 | /* we're going to block userspace touching us until resume completes */ | |
648 | snd_power_change_state(codec->card, SNDRV_CTL_POWER_D3hot); | |
649 | ||
db2a4165 | 650 | /* mute any active DAC's */ |
3ff3f64b | 651 | for (i = 0; i < machine->num_links; i++) { |
3c4b266f | 652 | struct snd_soc_dai *dai = machine->dai_link[i].codec_dai; |
cb666e5b LG |
653 | if (dai->dai_ops.digital_mute && dai->playback.active) |
654 | dai->dai_ops.digital_mute(dai, 1); | |
db2a4165 FM |
655 | } |
656 | ||
4ccab3e7 LG |
657 | /* suspend all pcms */ |
658 | for (i = 0; i < machine->num_links; i++) | |
659 | snd_pcm_suspend_all(machine->dai_link[i].pcm); | |
660 | ||
db2a4165 FM |
661 | if (machine->suspend_pre) |
662 | machine->suspend_pre(pdev, state); | |
663 | ||
3ff3f64b | 664 | for (i = 0; i < machine->num_links; i++) { |
3c4b266f | 665 | struct snd_soc_dai *cpu_dai = machine->dai_link[i].cpu_dai; |
db2a4165 FM |
666 | if (cpu_dai->suspend && cpu_dai->type != SND_SOC_DAI_AC97) |
667 | cpu_dai->suspend(pdev, cpu_dai); | |
668 | if (platform->suspend) | |
669 | platform->suspend(pdev, cpu_dai); | |
670 | } | |
671 | ||
672 | /* close any waiting streams and save state */ | |
965ac42c | 673 | run_delayed_work(&socdev->delayed_work); |
0be9898a | 674 | codec->suspend_bias_level = codec->bias_level; |
db2a4165 | 675 | |
3ff3f64b | 676 | for (i = 0; i < codec->num_dai; i++) { |
db2a4165 FM |
677 | char *stream = codec->dai[i].playback.stream_name; |
678 | if (stream != NULL) | |
679 | snd_soc_dapm_stream_event(codec, stream, | |
680 | SND_SOC_DAPM_STREAM_SUSPEND); | |
681 | stream = codec->dai[i].capture.stream_name; | |
682 | if (stream != NULL) | |
683 | snd_soc_dapm_stream_event(codec, stream, | |
684 | SND_SOC_DAPM_STREAM_SUSPEND); | |
685 | } | |
686 | ||
687 | if (codec_dev->suspend) | |
688 | codec_dev->suspend(pdev, state); | |
689 | ||
3ff3f64b | 690 | for (i = 0; i < machine->num_links; i++) { |
3c4b266f | 691 | struct snd_soc_dai *cpu_dai = machine->dai_link[i].cpu_dai; |
db2a4165 FM |
692 | if (cpu_dai->suspend && cpu_dai->type == SND_SOC_DAI_AC97) |
693 | cpu_dai->suspend(pdev, cpu_dai); | |
694 | } | |
695 | ||
696 | if (machine->suspend_post) | |
697 | machine->suspend_post(pdev, state); | |
698 | ||
699 | return 0; | |
700 | } | |
701 | ||
6ed25978 AG |
702 | /* deferred resume work, so resume can complete before we finished |
703 | * setting our codec back up, which can be very slow on I2C | |
704 | */ | |
705 | static void soc_resume_deferred(struct work_struct *work) | |
db2a4165 | 706 | { |
6ed25978 AG |
707 | struct snd_soc_device *socdev = container_of(work, |
708 | struct snd_soc_device, | |
709 | deferred_resume_work); | |
3ff3f64b MB |
710 | struct snd_soc_machine *machine = socdev->machine; |
711 | struct snd_soc_platform *platform = socdev->platform; | |
712 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; | |
db2a4165 | 713 | struct snd_soc_codec *codec = socdev->codec; |
6ed25978 | 714 | struct platform_device *pdev = to_platform_device(socdev->dev); |
db2a4165 FM |
715 | int i; |
716 | ||
6ed25978 AG |
717 | /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time, |
718 | * so userspace apps are blocked from touching us | |
719 | */ | |
720 | ||
721 | dev_info(socdev->dev, "starting resume work\n"); | |
722 | ||
db2a4165 FM |
723 | if (machine->resume_pre) |
724 | machine->resume_pre(pdev); | |
725 | ||
3ff3f64b | 726 | for (i = 0; i < machine->num_links; i++) { |
3c4b266f | 727 | struct snd_soc_dai *cpu_dai = machine->dai_link[i].cpu_dai; |
db2a4165 FM |
728 | if (cpu_dai->resume && cpu_dai->type == SND_SOC_DAI_AC97) |
729 | cpu_dai->resume(pdev, cpu_dai); | |
730 | } | |
731 | ||
732 | if (codec_dev->resume) | |
733 | codec_dev->resume(pdev); | |
734 | ||
3ff3f64b MB |
735 | for (i = 0; i < codec->num_dai; i++) { |
736 | char *stream = codec->dai[i].playback.stream_name; | |
db2a4165 FM |
737 | if (stream != NULL) |
738 | snd_soc_dapm_stream_event(codec, stream, | |
739 | SND_SOC_DAPM_STREAM_RESUME); | |
740 | stream = codec->dai[i].capture.stream_name; | |
741 | if (stream != NULL) | |
742 | snd_soc_dapm_stream_event(codec, stream, | |
743 | SND_SOC_DAPM_STREAM_RESUME); | |
744 | } | |
745 | ||
3ff3f64b MB |
746 | /* unmute any active DACs */ |
747 | for (i = 0; i < machine->num_links; i++) { | |
3c4b266f | 748 | struct snd_soc_dai *dai = machine->dai_link[i].codec_dai; |
cb666e5b LG |
749 | if (dai->dai_ops.digital_mute && dai->playback.active) |
750 | dai->dai_ops.digital_mute(dai, 0); | |
db2a4165 FM |
751 | } |
752 | ||
3ff3f64b | 753 | for (i = 0; i < machine->num_links; i++) { |
3c4b266f | 754 | struct snd_soc_dai *cpu_dai = machine->dai_link[i].cpu_dai; |
db2a4165 FM |
755 | if (cpu_dai->resume && cpu_dai->type != SND_SOC_DAI_AC97) |
756 | cpu_dai->resume(pdev, cpu_dai); | |
757 | if (platform->resume) | |
758 | platform->resume(pdev, cpu_dai); | |
759 | } | |
760 | ||
761 | if (machine->resume_post) | |
762 | machine->resume_post(pdev); | |
763 | ||
6ed25978 AG |
764 | dev_info(socdev->dev, "resume work completed\n"); |
765 | ||
766 | /* userspace can access us now we are back as we were before */ | |
767 | snd_power_change_state(codec->card, SNDRV_CTL_POWER_D0); | |
768 | } | |
769 | ||
770 | /* powers up audio subsystem after a suspend */ | |
771 | static int soc_resume(struct platform_device *pdev) | |
772 | { | |
773 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
774 | ||
775 | dev_info(socdev->dev, "scheduling resume work\n"); | |
776 | ||
777 | if (!schedule_work(&socdev->deferred_resume_work)) | |
778 | dev_err(socdev->dev, "work item may be lost\n"); | |
779 | ||
db2a4165 FM |
780 | return 0; |
781 | } | |
782 | ||
783 | #else | |
784 | #define soc_suspend NULL | |
785 | #define soc_resume NULL | |
786 | #endif | |
787 | ||
788 | /* probes a new socdev */ | |
789 | static int soc_probe(struct platform_device *pdev) | |
790 | { | |
791 | int ret = 0, i; | |
792 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
793 | struct snd_soc_machine *machine = socdev->machine; | |
794 | struct snd_soc_platform *platform = socdev->platform; | |
795 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; | |
796 | ||
797 | if (machine->probe) { | |
798 | ret = machine->probe(pdev); | |
3ff3f64b | 799 | if (ret < 0) |
db2a4165 FM |
800 | return ret; |
801 | } | |
802 | ||
803 | for (i = 0; i < machine->num_links; i++) { | |
3c4b266f | 804 | struct snd_soc_dai *cpu_dai = machine->dai_link[i].cpu_dai; |
db2a4165 | 805 | if (cpu_dai->probe) { |
bdb92876 | 806 | ret = cpu_dai->probe(pdev, cpu_dai); |
3ff3f64b | 807 | if (ret < 0) |
db2a4165 FM |
808 | goto cpu_dai_err; |
809 | } | |
810 | } | |
811 | ||
812 | if (codec_dev->probe) { | |
813 | ret = codec_dev->probe(pdev); | |
3ff3f64b | 814 | if (ret < 0) |
db2a4165 FM |
815 | goto cpu_dai_err; |
816 | } | |
817 | ||
818 | if (platform->probe) { | |
819 | ret = platform->probe(pdev); | |
3ff3f64b | 820 | if (ret < 0) |
db2a4165 FM |
821 | goto platform_err; |
822 | } | |
823 | ||
824 | /* DAPM stream work */ | |
4484bb2e | 825 | INIT_DELAYED_WORK(&socdev->delayed_work, close_delayed_work); |
1301a964 | 826 | #ifdef CONFIG_PM |
6ed25978 AG |
827 | /* deferred resume work */ |
828 | INIT_WORK(&socdev->deferred_resume_work, soc_resume_deferred); | |
1301a964 | 829 | #endif |
6ed25978 | 830 | |
db2a4165 FM |
831 | return 0; |
832 | ||
db2a4165 FM |
833 | platform_err: |
834 | if (codec_dev->remove) | |
835 | codec_dev->remove(pdev); | |
836 | ||
837 | cpu_dai_err: | |
18b9b3d9 | 838 | for (i--; i >= 0; i--) { |
3c4b266f | 839 | struct snd_soc_dai *cpu_dai = machine->dai_link[i].cpu_dai; |
db2a4165 | 840 | if (cpu_dai->remove) |
bdb92876 | 841 | cpu_dai->remove(pdev, cpu_dai); |
db2a4165 FM |
842 | } |
843 | ||
844 | if (machine->remove) | |
845 | machine->remove(pdev); | |
846 | ||
847 | return ret; | |
848 | } | |
849 | ||
850 | /* removes a socdev */ | |
851 | static int soc_remove(struct platform_device *pdev) | |
852 | { | |
853 | int i; | |
854 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
855 | struct snd_soc_machine *machine = socdev->machine; | |
856 | struct snd_soc_platform *platform = socdev->platform; | |
857 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; | |
858 | ||
965ac42c LG |
859 | run_delayed_work(&socdev->delayed_work); |
860 | ||
db2a4165 FM |
861 | if (platform->remove) |
862 | platform->remove(pdev); | |
863 | ||
864 | if (codec_dev->remove) | |
865 | codec_dev->remove(pdev); | |
866 | ||
867 | for (i = 0; i < machine->num_links; i++) { | |
3c4b266f | 868 | struct snd_soc_dai *cpu_dai = machine->dai_link[i].cpu_dai; |
db2a4165 | 869 | if (cpu_dai->remove) |
bdb92876 | 870 | cpu_dai->remove(pdev, cpu_dai); |
db2a4165 FM |
871 | } |
872 | ||
873 | if (machine->remove) | |
874 | machine->remove(pdev); | |
875 | ||
876 | return 0; | |
877 | } | |
878 | ||
879 | /* ASoC platform driver */ | |
880 | static struct platform_driver soc_driver = { | |
881 | .driver = { | |
882 | .name = "soc-audio", | |
8b45a209 | 883 | .owner = THIS_MODULE, |
db2a4165 FM |
884 | }, |
885 | .probe = soc_probe, | |
886 | .remove = soc_remove, | |
887 | .suspend = soc_suspend, | |
888 | .resume = soc_resume, | |
889 | }; | |
890 | ||
891 | /* create a new pcm */ | |
892 | static int soc_new_pcm(struct snd_soc_device *socdev, | |
893 | struct snd_soc_dai_link *dai_link, int num) | |
894 | { | |
895 | struct snd_soc_codec *codec = socdev->codec; | |
3c4b266f LG |
896 | struct snd_soc_dai *codec_dai = dai_link->codec_dai; |
897 | struct snd_soc_dai *cpu_dai = dai_link->cpu_dai; | |
db2a4165 FM |
898 | struct snd_soc_pcm_runtime *rtd; |
899 | struct snd_pcm *pcm; | |
900 | char new_name[64]; | |
901 | int ret = 0, playback = 0, capture = 0; | |
902 | ||
903 | rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime), GFP_KERNEL); | |
904 | if (rtd == NULL) | |
905 | return -ENOMEM; | |
cb666e5b LG |
906 | |
907 | rtd->dai = dai_link; | |
db2a4165 | 908 | rtd->socdev = socdev; |
cb666e5b | 909 | codec_dai->codec = socdev->codec; |
db2a4165 FM |
910 | |
911 | /* check client and interface hw capabilities */ | |
3ff3f64b | 912 | sprintf(new_name, "%s %s-%s-%d", dai_link->stream_name, codec_dai->name, |
db2a4165 FM |
913 | get_dai_name(cpu_dai->type), num); |
914 | ||
915 | if (codec_dai->playback.channels_min) | |
916 | playback = 1; | |
917 | if (codec_dai->capture.channels_min) | |
918 | capture = 1; | |
919 | ||
920 | ret = snd_pcm_new(codec->card, new_name, codec->pcm_devs++, playback, | |
921 | capture, &pcm); | |
922 | if (ret < 0) { | |
3ff3f64b MB |
923 | printk(KERN_ERR "asoc: can't create pcm for codec %s\n", |
924 | codec->name); | |
db2a4165 FM |
925 | kfree(rtd); |
926 | return ret; | |
927 | } | |
928 | ||
4ccab3e7 | 929 | dai_link->pcm = pcm; |
db2a4165 FM |
930 | pcm->private_data = rtd; |
931 | soc_pcm_ops.mmap = socdev->platform->pcm_ops->mmap; | |
932 | soc_pcm_ops.pointer = socdev->platform->pcm_ops->pointer; | |
933 | soc_pcm_ops.ioctl = socdev->platform->pcm_ops->ioctl; | |
934 | soc_pcm_ops.copy = socdev->platform->pcm_ops->copy; | |
935 | soc_pcm_ops.silence = socdev->platform->pcm_ops->silence; | |
936 | soc_pcm_ops.ack = socdev->platform->pcm_ops->ack; | |
937 | soc_pcm_ops.page = socdev->platform->pcm_ops->page; | |
938 | ||
939 | if (playback) | |
940 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &soc_pcm_ops); | |
941 | ||
942 | if (capture) | |
943 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &soc_pcm_ops); | |
944 | ||
945 | ret = socdev->platform->pcm_new(codec->card, codec_dai, pcm); | |
946 | if (ret < 0) { | |
947 | printk(KERN_ERR "asoc: platform pcm constructor failed\n"); | |
948 | kfree(rtd); | |
949 | return ret; | |
950 | } | |
951 | ||
952 | pcm->private_free = socdev->platform->pcm_free; | |
953 | printk(KERN_INFO "asoc: %s <-> %s mapping ok\n", codec_dai->name, | |
954 | cpu_dai->name); | |
955 | return ret; | |
956 | } | |
957 | ||
958 | /* codec register dump */ | |
959 | static ssize_t codec_reg_show(struct device *dev, | |
960 | struct device_attribute *attr, char *buf) | |
961 | { | |
962 | struct snd_soc_device *devdata = dev_get_drvdata(dev); | |
963 | struct snd_soc_codec *codec = devdata->codec; | |
964 | int i, step = 1, count = 0; | |
965 | ||
966 | if (!codec->reg_cache_size) | |
967 | return 0; | |
968 | ||
969 | if (codec->reg_cache_step) | |
970 | step = codec->reg_cache_step; | |
971 | ||
972 | count += sprintf(buf, "%s registers\n", codec->name); | |
3ff3f64b MB |
973 | for (i = 0; i < codec->reg_cache_size; i += step) |
974 | count += sprintf(buf + count, "%2x: %4x\n", i, | |
975 | codec->read(codec, i)); | |
db2a4165 FM |
976 | |
977 | return count; | |
978 | } | |
979 | static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL); | |
980 | ||
981 | /** | |
982 | * snd_soc_new_ac97_codec - initailise AC97 device | |
983 | * @codec: audio codec | |
984 | * @ops: AC97 bus operations | |
985 | * @num: AC97 codec number | |
986 | * | |
987 | * Initialises AC97 codec resources for use by ad-hoc devices only. | |
988 | */ | |
989 | int snd_soc_new_ac97_codec(struct snd_soc_codec *codec, | |
990 | struct snd_ac97_bus_ops *ops, int num) | |
991 | { | |
992 | mutex_lock(&codec->mutex); | |
993 | ||
994 | codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL); | |
995 | if (codec->ac97 == NULL) { | |
996 | mutex_unlock(&codec->mutex); | |
997 | return -ENOMEM; | |
998 | } | |
999 | ||
1000 | codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL); | |
1001 | if (codec->ac97->bus == NULL) { | |
1002 | kfree(codec->ac97); | |
1003 | codec->ac97 = NULL; | |
1004 | mutex_unlock(&codec->mutex); | |
1005 | return -ENOMEM; | |
1006 | } | |
1007 | ||
1008 | codec->ac97->bus->ops = ops; | |
1009 | codec->ac97->num = num; | |
1010 | mutex_unlock(&codec->mutex); | |
1011 | return 0; | |
1012 | } | |
1013 | EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec); | |
1014 | ||
1015 | /** | |
1016 | * snd_soc_free_ac97_codec - free AC97 codec device | |
1017 | * @codec: audio codec | |
1018 | * | |
1019 | * Frees AC97 codec device resources. | |
1020 | */ | |
1021 | void snd_soc_free_ac97_codec(struct snd_soc_codec *codec) | |
1022 | { | |
1023 | mutex_lock(&codec->mutex); | |
1024 | kfree(codec->ac97->bus); | |
1025 | kfree(codec->ac97); | |
1026 | codec->ac97 = NULL; | |
1027 | mutex_unlock(&codec->mutex); | |
1028 | } | |
1029 | EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec); | |
1030 | ||
1031 | /** | |
1032 | * snd_soc_update_bits - update codec register bits | |
1033 | * @codec: audio codec | |
1034 | * @reg: codec register | |
1035 | * @mask: register mask | |
1036 | * @value: new value | |
1037 | * | |
1038 | * Writes new register value. | |
1039 | * | |
1040 | * Returns 1 for change else 0. | |
1041 | */ | |
1042 | int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg, | |
1043 | unsigned short mask, unsigned short value) | |
1044 | { | |
1045 | int change; | |
1046 | unsigned short old, new; | |
1047 | ||
1048 | mutex_lock(&io_mutex); | |
1049 | old = snd_soc_read(codec, reg); | |
1050 | new = (old & ~mask) | value; | |
1051 | change = old != new; | |
1052 | if (change) | |
1053 | snd_soc_write(codec, reg, new); | |
1054 | ||
1055 | mutex_unlock(&io_mutex); | |
1056 | return change; | |
1057 | } | |
1058 | EXPORT_SYMBOL_GPL(snd_soc_update_bits); | |
1059 | ||
1060 | /** | |
1061 | * snd_soc_test_bits - test register for change | |
1062 | * @codec: audio codec | |
1063 | * @reg: codec register | |
1064 | * @mask: register mask | |
1065 | * @value: new value | |
1066 | * | |
1067 | * Tests a register with a new value and checks if the new value is | |
1068 | * different from the old value. | |
1069 | * | |
1070 | * Returns 1 for change else 0. | |
1071 | */ | |
1072 | int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg, | |
1073 | unsigned short mask, unsigned short value) | |
1074 | { | |
1075 | int change; | |
1076 | unsigned short old, new; | |
1077 | ||
1078 | mutex_lock(&io_mutex); | |
1079 | old = snd_soc_read(codec, reg); | |
1080 | new = (old & ~mask) | value; | |
1081 | change = old != new; | |
1082 | mutex_unlock(&io_mutex); | |
1083 | ||
1084 | return change; | |
1085 | } | |
1086 | EXPORT_SYMBOL_GPL(snd_soc_test_bits); | |
1087 | ||
db2a4165 FM |
1088 | /** |
1089 | * snd_soc_new_pcms - create new sound card and pcms | |
1090 | * @socdev: the SoC audio device | |
1091 | * | |
1092 | * Create a new sound card based upon the codec and interface pcms. | |
1093 | * | |
1094 | * Returns 0 for success, else error. | |
1095 | */ | |
bc7320c5 | 1096 | int snd_soc_new_pcms(struct snd_soc_device *socdev, int idx, const char *xid) |
db2a4165 FM |
1097 | { |
1098 | struct snd_soc_codec *codec = socdev->codec; | |
1099 | struct snd_soc_machine *machine = socdev->machine; | |
1100 | int ret = 0, i; | |
1101 | ||
1102 | mutex_lock(&codec->mutex); | |
1103 | ||
1104 | /* register a sound card */ | |
1105 | codec->card = snd_card_new(idx, xid, codec->owner, 0); | |
1106 | if (!codec->card) { | |
1107 | printk(KERN_ERR "asoc: can't create sound card for codec %s\n", | |
1108 | codec->name); | |
1109 | mutex_unlock(&codec->mutex); | |
1110 | return -ENODEV; | |
1111 | } | |
1112 | ||
1113 | codec->card->dev = socdev->dev; | |
1114 | codec->card->private_data = codec; | |
1115 | strncpy(codec->card->driver, codec->name, sizeof(codec->card->driver)); | |
1116 | ||
1117 | /* create the pcms */ | |
3ff3f64b | 1118 | for (i = 0; i < machine->num_links; i++) { |
db2a4165 FM |
1119 | ret = soc_new_pcm(socdev, &machine->dai_link[i], i); |
1120 | if (ret < 0) { | |
1121 | printk(KERN_ERR "asoc: can't create pcm %s\n", | |
1122 | machine->dai_link[i].stream_name); | |
1123 | mutex_unlock(&codec->mutex); | |
1124 | return ret; | |
1125 | } | |
1126 | } | |
1127 | ||
1128 | mutex_unlock(&codec->mutex); | |
1129 | return ret; | |
1130 | } | |
1131 | EXPORT_SYMBOL_GPL(snd_soc_new_pcms); | |
1132 | ||
1133 | /** | |
1134 | * snd_soc_register_card - register sound card | |
1135 | * @socdev: the SoC audio device | |
1136 | * | |
1137 | * Register a SoC sound card. Also registers an AC97 device if the | |
1138 | * codec is AC97 for ad hoc devices. | |
1139 | * | |
1140 | * Returns 0 for success, else error. | |
1141 | */ | |
1142 | int snd_soc_register_card(struct snd_soc_device *socdev) | |
1143 | { | |
1144 | struct snd_soc_codec *codec = socdev->codec; | |
1145 | struct snd_soc_machine *machine = socdev->machine; | |
12e74f7d | 1146 | int ret = 0, i, ac97 = 0, err = 0; |
db2a4165 | 1147 | |
3ff3f64b | 1148 | for (i = 0; i < machine->num_links; i++) { |
12e74f7d LG |
1149 | if (socdev->machine->dai_link[i].init) { |
1150 | err = socdev->machine->dai_link[i].init(codec); | |
1151 | if (err < 0) { | |
1152 | printk(KERN_ERR "asoc: failed to init %s\n", | |
1153 | socdev->machine->dai_link[i].stream_name); | |
1154 | continue; | |
1155 | } | |
1156 | } | |
3ff3f64b | 1157 | if (socdev->machine->dai_link[i].codec_dai->type == |
a68660e0 | 1158 | SND_SOC_DAI_AC97_BUS) |
db2a4165 FM |
1159 | ac97 = 1; |
1160 | } | |
1161 | snprintf(codec->card->shortname, sizeof(codec->card->shortname), | |
1162 | "%s", machine->name); | |
1163 | snprintf(codec->card->longname, sizeof(codec->card->longname), | |
1164 | "%s (%s)", machine->name, codec->name); | |
1165 | ||
1166 | ret = snd_card_register(codec->card); | |
1167 | if (ret < 0) { | |
3ff3f64b | 1168 | printk(KERN_ERR "asoc: failed to register soundcard for %s\n", |
db2a4165 | 1169 | codec->name); |
12e74f7d | 1170 | goto out; |
db2a4165 FM |
1171 | } |
1172 | ||
08c8efe6 | 1173 | mutex_lock(&codec->mutex); |
db2a4165 | 1174 | #ifdef CONFIG_SND_SOC_AC97_BUS |
12e74f7d LG |
1175 | if (ac97) { |
1176 | ret = soc_ac97_dev_register(codec); | |
1177 | if (ret < 0) { | |
1178 | printk(KERN_ERR "asoc: AC97 device register failed\n"); | |
1179 | snd_card_free(codec->card); | |
08c8efe6 | 1180 | mutex_unlock(&codec->mutex); |
12e74f7d LG |
1181 | goto out; |
1182 | } | |
1183 | } | |
db2a4165 FM |
1184 | #endif |
1185 | ||
12e74f7d LG |
1186 | err = snd_soc_dapm_sys_add(socdev->dev); |
1187 | if (err < 0) | |
1188 | printk(KERN_WARNING "asoc: failed to add dapm sysfs entries\n"); | |
1189 | ||
1190 | err = device_create_file(socdev->dev, &dev_attr_codec_reg); | |
1191 | if (err < 0) | |
3ff3f64b | 1192 | printk(KERN_WARNING "asoc: failed to add codec sysfs files\n"); |
08c8efe6 | 1193 | |
db2a4165 | 1194 | mutex_unlock(&codec->mutex); |
08c8efe6 MB |
1195 | |
1196 | out: | |
db2a4165 FM |
1197 | return ret; |
1198 | } | |
1199 | EXPORT_SYMBOL_GPL(snd_soc_register_card); | |
1200 | ||
1201 | /** | |
1202 | * snd_soc_free_pcms - free sound card and pcms | |
1203 | * @socdev: the SoC audio device | |
1204 | * | |
1205 | * Frees sound card and pcms associated with the socdev. | |
1206 | * Also unregister the codec if it is an AC97 device. | |
1207 | */ | |
1208 | void snd_soc_free_pcms(struct snd_soc_device *socdev) | |
1209 | { | |
1210 | struct snd_soc_codec *codec = socdev->codec; | |
a68660e0 | 1211 | #ifdef CONFIG_SND_SOC_AC97_BUS |
3c4b266f | 1212 | struct snd_soc_dai *codec_dai; |
a68660e0 LG |
1213 | int i; |
1214 | #endif | |
db2a4165 FM |
1215 | |
1216 | mutex_lock(&codec->mutex); | |
1217 | #ifdef CONFIG_SND_SOC_AC97_BUS | |
3ff3f64b | 1218 | for (i = 0; i < codec->num_dai; i++) { |
a68660e0 LG |
1219 | codec_dai = &codec->dai[i]; |
1220 | if (codec_dai->type == SND_SOC_DAI_AC97_BUS && codec->ac97) { | |
1221 | soc_ac97_dev_unregister(codec); | |
1222 | goto free_card; | |
1223 | } | |
1224 | } | |
1225 | free_card: | |
db2a4165 FM |
1226 | #endif |
1227 | ||
1228 | if (codec->card) | |
1229 | snd_card_free(codec->card); | |
1230 | device_remove_file(socdev->dev, &dev_attr_codec_reg); | |
1231 | mutex_unlock(&codec->mutex); | |
1232 | } | |
1233 | EXPORT_SYMBOL_GPL(snd_soc_free_pcms); | |
1234 | ||
1235 | /** | |
1236 | * snd_soc_set_runtime_hwparams - set the runtime hardware parameters | |
1237 | * @substream: the pcm substream | |
1238 | * @hw: the hardware parameters | |
1239 | * | |
1240 | * Sets the substream runtime hardware parameters. | |
1241 | */ | |
1242 | int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream, | |
1243 | const struct snd_pcm_hardware *hw) | |
1244 | { | |
1245 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1246 | runtime->hw.info = hw->info; | |
1247 | runtime->hw.formats = hw->formats; | |
1248 | runtime->hw.period_bytes_min = hw->period_bytes_min; | |
1249 | runtime->hw.period_bytes_max = hw->period_bytes_max; | |
1250 | runtime->hw.periods_min = hw->periods_min; | |
1251 | runtime->hw.periods_max = hw->periods_max; | |
1252 | runtime->hw.buffer_bytes_max = hw->buffer_bytes_max; | |
1253 | runtime->hw.fifo_size = hw->fifo_size; | |
1254 | return 0; | |
1255 | } | |
1256 | EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams); | |
1257 | ||
1258 | /** | |
1259 | * snd_soc_cnew - create new control | |
1260 | * @_template: control template | |
1261 | * @data: control private data | |
1262 | * @lnng_name: control long name | |
1263 | * | |
1264 | * Create a new mixer control from a template control. | |
1265 | * | |
1266 | * Returns 0 for success, else error. | |
1267 | */ | |
1268 | struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template, | |
1269 | void *data, char *long_name) | |
1270 | { | |
1271 | struct snd_kcontrol_new template; | |
1272 | ||
1273 | memcpy(&template, _template, sizeof(template)); | |
1274 | if (long_name) | |
1275 | template.name = long_name; | |
db2a4165 FM |
1276 | template.index = 0; |
1277 | ||
1278 | return snd_ctl_new1(&template, data); | |
1279 | } | |
1280 | EXPORT_SYMBOL_GPL(snd_soc_cnew); | |
1281 | ||
1282 | /** | |
1283 | * snd_soc_info_enum_double - enumerated double mixer info callback | |
1284 | * @kcontrol: mixer control | |
1285 | * @uinfo: control element information | |
1286 | * | |
1287 | * Callback to provide information about a double enumerated | |
1288 | * mixer control. | |
1289 | * | |
1290 | * Returns 0 for success. | |
1291 | */ | |
1292 | int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol, | |
1293 | struct snd_ctl_elem_info *uinfo) | |
1294 | { | |
1295 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1296 | ||
1297 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; | |
1298 | uinfo->count = e->shift_l == e->shift_r ? 1 : 2; | |
1299 | uinfo->value.enumerated.items = e->mask; | |
1300 | ||
1301 | if (uinfo->value.enumerated.item > e->mask - 1) | |
1302 | uinfo->value.enumerated.item = e->mask - 1; | |
1303 | strcpy(uinfo->value.enumerated.name, | |
1304 | e->texts[uinfo->value.enumerated.item]); | |
1305 | return 0; | |
1306 | } | |
1307 | EXPORT_SYMBOL_GPL(snd_soc_info_enum_double); | |
1308 | ||
1309 | /** | |
1310 | * snd_soc_get_enum_double - enumerated double mixer get callback | |
1311 | * @kcontrol: mixer control | |
1312 | * @uinfo: control element information | |
1313 | * | |
1314 | * Callback to get the value of a double enumerated mixer. | |
1315 | * | |
1316 | * Returns 0 for success. | |
1317 | */ | |
1318 | int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol, | |
1319 | struct snd_ctl_elem_value *ucontrol) | |
1320 | { | |
1321 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1322 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1323 | unsigned short val, bitmask; | |
1324 | ||
1325 | for (bitmask = 1; bitmask < e->mask; bitmask <<= 1) | |
1326 | ; | |
1327 | val = snd_soc_read(codec, e->reg); | |
3ff3f64b MB |
1328 | ucontrol->value.enumerated.item[0] |
1329 | = (val >> e->shift_l) & (bitmask - 1); | |
db2a4165 FM |
1330 | if (e->shift_l != e->shift_r) |
1331 | ucontrol->value.enumerated.item[1] = | |
1332 | (val >> e->shift_r) & (bitmask - 1); | |
1333 | ||
1334 | return 0; | |
1335 | } | |
1336 | EXPORT_SYMBOL_GPL(snd_soc_get_enum_double); | |
1337 | ||
1338 | /** | |
1339 | * snd_soc_put_enum_double - enumerated double mixer put callback | |
1340 | * @kcontrol: mixer control | |
1341 | * @uinfo: control element information | |
1342 | * | |
1343 | * Callback to set the value of a double enumerated mixer. | |
1344 | * | |
1345 | * Returns 0 for success. | |
1346 | */ | |
1347 | int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol, | |
1348 | struct snd_ctl_elem_value *ucontrol) | |
1349 | { | |
1350 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1351 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1352 | unsigned short val; | |
1353 | unsigned short mask, bitmask; | |
1354 | ||
1355 | for (bitmask = 1; bitmask < e->mask; bitmask <<= 1) | |
1356 | ; | |
1357 | if (ucontrol->value.enumerated.item[0] > e->mask - 1) | |
1358 | return -EINVAL; | |
1359 | val = ucontrol->value.enumerated.item[0] << e->shift_l; | |
1360 | mask = (bitmask - 1) << e->shift_l; | |
1361 | if (e->shift_l != e->shift_r) { | |
1362 | if (ucontrol->value.enumerated.item[1] > e->mask - 1) | |
1363 | return -EINVAL; | |
1364 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
1365 | mask |= (bitmask - 1) << e->shift_r; | |
1366 | } | |
1367 | ||
1368 | return snd_soc_update_bits(codec, e->reg, mask, val); | |
1369 | } | |
1370 | EXPORT_SYMBOL_GPL(snd_soc_put_enum_double); | |
1371 | ||
1372 | /** | |
1373 | * snd_soc_info_enum_ext - external enumerated single mixer info callback | |
1374 | * @kcontrol: mixer control | |
1375 | * @uinfo: control element information | |
1376 | * | |
1377 | * Callback to provide information about an external enumerated | |
1378 | * single mixer. | |
1379 | * | |
1380 | * Returns 0 for success. | |
1381 | */ | |
1382 | int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol, | |
1383 | struct snd_ctl_elem_info *uinfo) | |
1384 | { | |
1385 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1386 | ||
1387 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; | |
1388 | uinfo->count = 1; | |
1389 | uinfo->value.enumerated.items = e->mask; | |
1390 | ||
1391 | if (uinfo->value.enumerated.item > e->mask - 1) | |
1392 | uinfo->value.enumerated.item = e->mask - 1; | |
1393 | strcpy(uinfo->value.enumerated.name, | |
1394 | e->texts[uinfo->value.enumerated.item]); | |
1395 | return 0; | |
1396 | } | |
1397 | EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext); | |
1398 | ||
1399 | /** | |
1400 | * snd_soc_info_volsw_ext - external single mixer info callback | |
1401 | * @kcontrol: mixer control | |
1402 | * @uinfo: control element information | |
1403 | * | |
1404 | * Callback to provide information about a single external mixer control. | |
1405 | * | |
1406 | * Returns 0 for success. | |
1407 | */ | |
1408 | int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol, | |
1409 | struct snd_ctl_elem_info *uinfo) | |
1410 | { | |
a7a4ac86 PZ |
1411 | int max = kcontrol->private_value; |
1412 | ||
1413 | if (max == 1) | |
1414 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1415 | else | |
1416 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
db2a4165 | 1417 | |
db2a4165 FM |
1418 | uinfo->count = 1; |
1419 | uinfo->value.integer.min = 0; | |
a7a4ac86 | 1420 | uinfo->value.integer.max = max; |
db2a4165 FM |
1421 | return 0; |
1422 | } | |
1423 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext); | |
1424 | ||
db2a4165 FM |
1425 | /** |
1426 | * snd_soc_info_volsw - single mixer info callback | |
1427 | * @kcontrol: mixer control | |
1428 | * @uinfo: control element information | |
1429 | * | |
1430 | * Callback to provide information about a single mixer control. | |
1431 | * | |
1432 | * Returns 0 for success. | |
1433 | */ | |
1434 | int snd_soc_info_volsw(struct snd_kcontrol *kcontrol, | |
1435 | struct snd_ctl_elem_info *uinfo) | |
1436 | { | |
a7a4ac86 | 1437 | int max = (kcontrol->private_value >> 16) & 0xff; |
db2a4165 FM |
1438 | int shift = (kcontrol->private_value >> 8) & 0x0f; |
1439 | int rshift = (kcontrol->private_value >> 12) & 0x0f; | |
1440 | ||
a7a4ac86 PZ |
1441 | if (max == 1) |
1442 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1443 | else | |
1444 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
1445 | ||
db2a4165 FM |
1446 | uinfo->count = shift == rshift ? 1 : 2; |
1447 | uinfo->value.integer.min = 0; | |
a7a4ac86 | 1448 | uinfo->value.integer.max = max; |
db2a4165 FM |
1449 | return 0; |
1450 | } | |
1451 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw); | |
1452 | ||
1453 | /** | |
1454 | * snd_soc_get_volsw - single mixer get callback | |
1455 | * @kcontrol: mixer control | |
1456 | * @uinfo: control element information | |
1457 | * | |
1458 | * Callback to get the value of a single mixer control. | |
1459 | * | |
1460 | * Returns 0 for success. | |
1461 | */ | |
1462 | int snd_soc_get_volsw(struct snd_kcontrol *kcontrol, | |
1463 | struct snd_ctl_elem_value *ucontrol) | |
1464 | { | |
1465 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1466 | int reg = kcontrol->private_value & 0xff; | |
1467 | int shift = (kcontrol->private_value >> 8) & 0x0f; | |
1468 | int rshift = (kcontrol->private_value >> 12) & 0x0f; | |
a7a4ac86 PZ |
1469 | int max = (kcontrol->private_value >> 16) & 0xff; |
1470 | int mask = (1 << fls(max)) - 1; | |
db2a4165 FM |
1471 | int invert = (kcontrol->private_value >> 24) & 0x01; |
1472 | ||
1473 | ucontrol->value.integer.value[0] = | |
1474 | (snd_soc_read(codec, reg) >> shift) & mask; | |
1475 | if (shift != rshift) | |
1476 | ucontrol->value.integer.value[1] = | |
1477 | (snd_soc_read(codec, reg) >> rshift) & mask; | |
1478 | if (invert) { | |
1479 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1480 | max - ucontrol->value.integer.value[0]; |
db2a4165 FM |
1481 | if (shift != rshift) |
1482 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 1483 | max - ucontrol->value.integer.value[1]; |
db2a4165 FM |
1484 | } |
1485 | ||
1486 | return 0; | |
1487 | } | |
1488 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw); | |
1489 | ||
1490 | /** | |
1491 | * snd_soc_put_volsw - single mixer put callback | |
1492 | * @kcontrol: mixer control | |
1493 | * @uinfo: control element information | |
1494 | * | |
1495 | * Callback to set the value of a single mixer control. | |
1496 | * | |
1497 | * Returns 0 for success. | |
1498 | */ | |
1499 | int snd_soc_put_volsw(struct snd_kcontrol *kcontrol, | |
1500 | struct snd_ctl_elem_value *ucontrol) | |
1501 | { | |
1502 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1503 | int reg = kcontrol->private_value & 0xff; | |
1504 | int shift = (kcontrol->private_value >> 8) & 0x0f; | |
1505 | int rshift = (kcontrol->private_value >> 12) & 0x0f; | |
a7a4ac86 PZ |
1506 | int max = (kcontrol->private_value >> 16) & 0xff; |
1507 | int mask = (1 << fls(max)) - 1; | |
db2a4165 | 1508 | int invert = (kcontrol->private_value >> 24) & 0x01; |
db2a4165 FM |
1509 | unsigned short val, val2, val_mask; |
1510 | ||
1511 | val = (ucontrol->value.integer.value[0] & mask); | |
1512 | if (invert) | |
a7a4ac86 | 1513 | val = max - val; |
db2a4165 FM |
1514 | val_mask = mask << shift; |
1515 | val = val << shift; | |
1516 | if (shift != rshift) { | |
1517 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1518 | if (invert) | |
a7a4ac86 | 1519 | val2 = max - val2; |
db2a4165 FM |
1520 | val_mask |= mask << rshift; |
1521 | val |= val2 << rshift; | |
1522 | } | |
a7a4ac86 | 1523 | return snd_soc_update_bits(codec, reg, val_mask, val); |
db2a4165 FM |
1524 | } |
1525 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw); | |
1526 | ||
1527 | /** | |
1528 | * snd_soc_info_volsw_2r - double mixer info callback | |
1529 | * @kcontrol: mixer control | |
1530 | * @uinfo: control element information | |
1531 | * | |
1532 | * Callback to provide information about a double mixer control that | |
1533 | * spans 2 codec registers. | |
1534 | * | |
1535 | * Returns 0 for success. | |
1536 | */ | |
1537 | int snd_soc_info_volsw_2r(struct snd_kcontrol *kcontrol, | |
1538 | struct snd_ctl_elem_info *uinfo) | |
1539 | { | |
a7a4ac86 PZ |
1540 | int max = (kcontrol->private_value >> 12) & 0xff; |
1541 | ||
1542 | if (max == 1) | |
1543 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1544 | else | |
1545 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
db2a4165 | 1546 | |
db2a4165 FM |
1547 | uinfo->count = 2; |
1548 | uinfo->value.integer.min = 0; | |
a7a4ac86 | 1549 | uinfo->value.integer.max = max; |
db2a4165 FM |
1550 | return 0; |
1551 | } | |
1552 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r); | |
1553 | ||
1554 | /** | |
1555 | * snd_soc_get_volsw_2r - double mixer get callback | |
1556 | * @kcontrol: mixer control | |
1557 | * @uinfo: control element information | |
1558 | * | |
1559 | * Callback to get the value of a double mixer control that spans 2 registers. | |
1560 | * | |
1561 | * Returns 0 for success. | |
1562 | */ | |
1563 | int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol, | |
1564 | struct snd_ctl_elem_value *ucontrol) | |
1565 | { | |
1566 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1567 | int reg = kcontrol->private_value & 0xff; | |
1568 | int reg2 = (kcontrol->private_value >> 24) & 0xff; | |
1569 | int shift = (kcontrol->private_value >> 8) & 0x0f; | |
a7a4ac86 PZ |
1570 | int max = (kcontrol->private_value >> 12) & 0xff; |
1571 | int mask = (1<<fls(max))-1; | |
db2a4165 FM |
1572 | int invert = (kcontrol->private_value >> 20) & 0x01; |
1573 | ||
1574 | ucontrol->value.integer.value[0] = | |
1575 | (snd_soc_read(codec, reg) >> shift) & mask; | |
1576 | ucontrol->value.integer.value[1] = | |
1577 | (snd_soc_read(codec, reg2) >> shift) & mask; | |
1578 | if (invert) { | |
1579 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1580 | max - ucontrol->value.integer.value[0]; |
db2a4165 | 1581 | ucontrol->value.integer.value[1] = |
a7a4ac86 | 1582 | max - ucontrol->value.integer.value[1]; |
db2a4165 FM |
1583 | } |
1584 | ||
1585 | return 0; | |
1586 | } | |
1587 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r); | |
1588 | ||
1589 | /** | |
1590 | * snd_soc_put_volsw_2r - double mixer set callback | |
1591 | * @kcontrol: mixer control | |
1592 | * @uinfo: control element information | |
1593 | * | |
1594 | * Callback to set the value of a double mixer control that spans 2 registers. | |
1595 | * | |
1596 | * Returns 0 for success. | |
1597 | */ | |
1598 | int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol, | |
1599 | struct snd_ctl_elem_value *ucontrol) | |
1600 | { | |
1601 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1602 | int reg = kcontrol->private_value & 0xff; | |
1603 | int reg2 = (kcontrol->private_value >> 24) & 0xff; | |
1604 | int shift = (kcontrol->private_value >> 8) & 0x0f; | |
a7a4ac86 PZ |
1605 | int max = (kcontrol->private_value >> 12) & 0xff; |
1606 | int mask = (1 << fls(max)) - 1; | |
db2a4165 FM |
1607 | int invert = (kcontrol->private_value >> 20) & 0x01; |
1608 | int err; | |
1609 | unsigned short val, val2, val_mask; | |
1610 | ||
1611 | val_mask = mask << shift; | |
1612 | val = (ucontrol->value.integer.value[0] & mask); | |
1613 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1614 | ||
1615 | if (invert) { | |
a7a4ac86 PZ |
1616 | val = max - val; |
1617 | val2 = max - val2; | |
db2a4165 FM |
1618 | } |
1619 | ||
1620 | val = val << shift; | |
1621 | val2 = val2 << shift; | |
1622 | ||
3ff3f64b MB |
1623 | err = snd_soc_update_bits(codec, reg, val_mask, val); |
1624 | if (err < 0) | |
db2a4165 FM |
1625 | return err; |
1626 | ||
1627 | err = snd_soc_update_bits(codec, reg2, val_mask, val2); | |
1628 | return err; | |
1629 | } | |
1630 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r); | |
1631 | ||
e13ac2e9 MB |
1632 | /** |
1633 | * snd_soc_info_volsw_s8 - signed mixer info callback | |
1634 | * @kcontrol: mixer control | |
1635 | * @uinfo: control element information | |
1636 | * | |
1637 | * Callback to provide information about a signed mixer control. | |
1638 | * | |
1639 | * Returns 0 for success. | |
1640 | */ | |
1641 | int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol, | |
1642 | struct snd_ctl_elem_info *uinfo) | |
1643 | { | |
1644 | int max = (signed char)((kcontrol->private_value >> 16) & 0xff); | |
1645 | int min = (signed char)((kcontrol->private_value >> 24) & 0xff); | |
1646 | ||
1647 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
1648 | uinfo->count = 2; | |
1649 | uinfo->value.integer.min = 0; | |
1650 | uinfo->value.integer.max = max-min; | |
1651 | return 0; | |
1652 | } | |
1653 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8); | |
1654 | ||
1655 | /** | |
1656 | * snd_soc_get_volsw_s8 - signed mixer get callback | |
1657 | * @kcontrol: mixer control | |
1658 | * @uinfo: control element information | |
1659 | * | |
1660 | * Callback to get the value of a signed mixer control. | |
1661 | * | |
1662 | * Returns 0 for success. | |
1663 | */ | |
1664 | int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol, | |
1665 | struct snd_ctl_elem_value *ucontrol) | |
1666 | { | |
1667 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1668 | int reg = kcontrol->private_value & 0xff; | |
1669 | int min = (signed char)((kcontrol->private_value >> 24) & 0xff); | |
1670 | int val = snd_soc_read(codec, reg); | |
1671 | ||
1672 | ucontrol->value.integer.value[0] = | |
1673 | ((signed char)(val & 0xff))-min; | |
1674 | ucontrol->value.integer.value[1] = | |
1675 | ((signed char)((val >> 8) & 0xff))-min; | |
1676 | return 0; | |
1677 | } | |
1678 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8); | |
1679 | ||
1680 | /** | |
1681 | * snd_soc_put_volsw_sgn - signed mixer put callback | |
1682 | * @kcontrol: mixer control | |
1683 | * @uinfo: control element information | |
1684 | * | |
1685 | * Callback to set the value of a signed mixer control. | |
1686 | * | |
1687 | * Returns 0 for success. | |
1688 | */ | |
1689 | int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol, | |
1690 | struct snd_ctl_elem_value *ucontrol) | |
1691 | { | |
1692 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1693 | int reg = kcontrol->private_value & 0xff; | |
1694 | int min = (signed char)((kcontrol->private_value >> 24) & 0xff); | |
1695 | unsigned short val; | |
1696 | ||
1697 | val = (ucontrol->value.integer.value[0]+min) & 0xff; | |
1698 | val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8; | |
1699 | ||
1700 | return snd_soc_update_bits(codec, reg, 0xffff, val); | |
1701 | } | |
1702 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8); | |
1703 | ||
8c6529db LG |
1704 | /** |
1705 | * snd_soc_dai_set_sysclk - configure DAI system or master clock. | |
1706 | * @dai: DAI | |
1707 | * @clk_id: DAI specific clock ID | |
1708 | * @freq: new clock frequency in Hz | |
1709 | * @dir: new clock direction - input/output. | |
1710 | * | |
1711 | * Configures the DAI master (MCLK) or system (SYSCLK) clocking. | |
1712 | */ | |
1713 | int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id, | |
1714 | unsigned int freq, int dir) | |
1715 | { | |
1716 | if (dai->dai_ops.set_sysclk) | |
1717 | return dai->dai_ops.set_sysclk(dai, clk_id, freq, dir); | |
1718 | else | |
1719 | return -EINVAL; | |
1720 | } | |
1721 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk); | |
1722 | ||
1723 | /** | |
1724 | * snd_soc_dai_set_clkdiv - configure DAI clock dividers. | |
1725 | * @dai: DAI | |
1726 | * @clk_id: DAI specific clock divider ID | |
1727 | * @div: new clock divisor. | |
1728 | * | |
1729 | * Configures the clock dividers. This is used to derive the best DAI bit and | |
1730 | * frame clocks from the system or master clock. It's best to set the DAI bit | |
1731 | * and frame clocks as low as possible to save system power. | |
1732 | */ | |
1733 | int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai, | |
1734 | int div_id, int div) | |
1735 | { | |
1736 | if (dai->dai_ops.set_clkdiv) | |
1737 | return dai->dai_ops.set_clkdiv(dai, div_id, div); | |
1738 | else | |
1739 | return -EINVAL; | |
1740 | } | |
1741 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv); | |
1742 | ||
1743 | /** | |
1744 | * snd_soc_dai_set_pll - configure DAI PLL. | |
1745 | * @dai: DAI | |
1746 | * @pll_id: DAI specific PLL ID | |
1747 | * @freq_in: PLL input clock frequency in Hz | |
1748 | * @freq_out: requested PLL output clock frequency in Hz | |
1749 | * | |
1750 | * Configures and enables PLL to generate output clock based on input clock. | |
1751 | */ | |
1752 | int snd_soc_dai_set_pll(struct snd_soc_dai *dai, | |
1753 | int pll_id, unsigned int freq_in, unsigned int freq_out) | |
1754 | { | |
1755 | if (dai->dai_ops.set_pll) | |
1756 | return dai->dai_ops.set_pll(dai, pll_id, freq_in, freq_out); | |
1757 | else | |
1758 | return -EINVAL; | |
1759 | } | |
1760 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll); | |
1761 | ||
1762 | /** | |
1763 | * snd_soc_dai_set_fmt - configure DAI hardware audio format. | |
1764 | * @dai: DAI | |
1765 | * @clk_id: DAI specific clock ID | |
1766 | * @fmt: SND_SOC_DAIFMT_ format value. | |
1767 | * | |
1768 | * Configures the DAI hardware format and clocking. | |
1769 | */ | |
1770 | int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) | |
1771 | { | |
1772 | if (dai->dai_ops.set_fmt) | |
1773 | return dai->dai_ops.set_fmt(dai, fmt); | |
1774 | else | |
1775 | return -EINVAL; | |
1776 | } | |
1777 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt); | |
1778 | ||
1779 | /** | |
1780 | * snd_soc_dai_set_tdm_slot - configure DAI TDM. | |
1781 | * @dai: DAI | |
1782 | * @mask: DAI specific mask representing used slots. | |
1783 | * @slots: Number of slots in use. | |
1784 | * | |
1785 | * Configures a DAI for TDM operation. Both mask and slots are codec and DAI | |
1786 | * specific. | |
1787 | */ | |
1788 | int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai, | |
1789 | unsigned int mask, int slots) | |
1790 | { | |
1791 | if (dai->dai_ops.set_sysclk) | |
1792 | return dai->dai_ops.set_tdm_slot(dai, mask, slots); | |
1793 | else | |
1794 | return -EINVAL; | |
1795 | } | |
1796 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot); | |
1797 | ||
1798 | /** | |
1799 | * snd_soc_dai_set_tristate - configure DAI system or master clock. | |
1800 | * @dai: DAI | |
1801 | * @tristate: tristate enable | |
1802 | * | |
1803 | * Tristates the DAI so that others can use it. | |
1804 | */ | |
1805 | int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate) | |
1806 | { | |
1807 | if (dai->dai_ops.set_sysclk) | |
1808 | return dai->dai_ops.set_tristate(dai, tristate); | |
1809 | else | |
1810 | return -EINVAL; | |
1811 | } | |
1812 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate); | |
1813 | ||
1814 | /** | |
1815 | * snd_soc_dai_digital_mute - configure DAI system or master clock. | |
1816 | * @dai: DAI | |
1817 | * @mute: mute enable | |
1818 | * | |
1819 | * Mutes the DAI DAC. | |
1820 | */ | |
1821 | int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute) | |
1822 | { | |
1823 | if (dai->dai_ops.digital_mute) | |
1824 | return dai->dai_ops.digital_mute(dai, mute); | |
1825 | else | |
1826 | return -EINVAL; | |
1827 | } | |
1828 | EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute); | |
1829 | ||
db2a4165 FM |
1830 | static int __devinit snd_soc_init(void) |
1831 | { | |
1832 | printk(KERN_INFO "ASoC version %s\n", SND_SOC_VERSION); | |
1833 | return platform_driver_register(&soc_driver); | |
1834 | } | |
1835 | ||
1836 | static void snd_soc_exit(void) | |
1837 | { | |
3ff3f64b | 1838 | platform_driver_unregister(&soc_driver); |
db2a4165 FM |
1839 | } |
1840 | ||
1841 | module_init(snd_soc_init); | |
1842 | module_exit(snd_soc_exit); | |
1843 | ||
1844 | /* Module information */ | |
1845 | MODULE_AUTHOR("Liam Girdwood, liam.girdwood@wolfsonmicro.com, www.wolfsonmicro.com"); | |
1846 | MODULE_DESCRIPTION("ALSA SoC Core"); | |
1847 | MODULE_LICENSE("GPL"); | |
8b45a209 | 1848 | MODULE_ALIAS("platform:soc-audio"); |