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> |
474828a4 | 31 | #include <sound/ac97_codec.h> |
db2a4165 FM |
32 | #include <sound/core.h> |
33 | #include <sound/pcm.h> | |
34 | #include <sound/pcm_params.h> | |
35 | #include <sound/soc.h> | |
36 | #include <sound/soc-dapm.h> | |
37 | #include <sound/initval.h> | |
38 | ||
db2a4165 | 39 | static DEFINE_MUTEX(pcm_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 | ||
2624d5fa MB |
83 | /* codec register dump */ |
84 | static ssize_t soc_codec_reg_show(struct snd_soc_codec *codec, char *buf) | |
85 | { | |
86 | int i, step = 1, count = 0; | |
87 | ||
88 | if (!codec->reg_cache_size) | |
89 | return 0; | |
90 | ||
91 | if (codec->reg_cache_step) | |
92 | step = codec->reg_cache_step; | |
93 | ||
94 | count += sprintf(buf, "%s registers\n", codec->name); | |
95 | for (i = 0; i < codec->reg_cache_size; i += step) { | |
96 | if (codec->readable_register && !codec->readable_register(i)) | |
97 | continue; | |
98 | ||
99 | count += sprintf(buf + count, "%2x: ", i); | |
100 | if (count >= PAGE_SIZE - 1) | |
101 | break; | |
102 | ||
103 | if (codec->display_register) | |
104 | count += codec->display_register(codec, buf + count, | |
105 | PAGE_SIZE - count, i); | |
106 | else | |
107 | count += snprintf(buf + count, PAGE_SIZE - count, | |
108 | "%4x", codec->read(codec, i)); | |
109 | ||
110 | if (count >= PAGE_SIZE - 1) | |
111 | break; | |
112 | ||
113 | count += snprintf(buf + count, PAGE_SIZE - count, "\n"); | |
114 | if (count >= PAGE_SIZE - 1) | |
115 | break; | |
116 | } | |
117 | ||
118 | /* Truncate count; min() would cause a warning */ | |
119 | if (count >= PAGE_SIZE) | |
120 | count = PAGE_SIZE - 1; | |
121 | ||
122 | return count; | |
123 | } | |
124 | static ssize_t codec_reg_show(struct device *dev, | |
125 | struct device_attribute *attr, char *buf) | |
126 | { | |
127 | struct snd_soc_device *devdata = dev_get_drvdata(dev); | |
128 | return soc_codec_reg_show(devdata->card->codec, buf); | |
129 | } | |
130 | ||
131 | static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL); | |
132 | ||
dbe21408 MB |
133 | static ssize_t pmdown_time_show(struct device *dev, |
134 | struct device_attribute *attr, char *buf) | |
135 | { | |
136 | struct snd_soc_device *socdev = dev_get_drvdata(dev); | |
137 | struct snd_soc_card *card = socdev->card; | |
138 | ||
6c5f1fed | 139 | return sprintf(buf, "%ld\n", card->pmdown_time); |
dbe21408 MB |
140 | } |
141 | ||
142 | static ssize_t pmdown_time_set(struct device *dev, | |
143 | struct device_attribute *attr, | |
144 | const char *buf, size_t count) | |
145 | { | |
146 | struct snd_soc_device *socdev = dev_get_drvdata(dev); | |
147 | struct snd_soc_card *card = socdev->card; | |
148 | ||
149 | strict_strtol(buf, 10, &card->pmdown_time); | |
150 | ||
151 | return count; | |
152 | } | |
153 | ||
154 | static DEVICE_ATTR(pmdown_time, 0644, pmdown_time_show, pmdown_time_set); | |
155 | ||
2624d5fa MB |
156 | #ifdef CONFIG_DEBUG_FS |
157 | static int codec_reg_open_file(struct inode *inode, struct file *file) | |
158 | { | |
159 | file->private_data = inode->i_private; | |
160 | return 0; | |
161 | } | |
162 | ||
163 | static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf, | |
164 | size_t count, loff_t *ppos) | |
165 | { | |
166 | ssize_t ret; | |
167 | struct snd_soc_codec *codec = file->private_data; | |
168 | char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL); | |
169 | if (!buf) | |
170 | return -ENOMEM; | |
171 | ret = soc_codec_reg_show(codec, buf); | |
172 | if (ret >= 0) | |
173 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); | |
174 | kfree(buf); | |
175 | return ret; | |
176 | } | |
177 | ||
178 | static ssize_t codec_reg_write_file(struct file *file, | |
179 | const char __user *user_buf, size_t count, loff_t *ppos) | |
180 | { | |
181 | char buf[32]; | |
182 | int buf_size; | |
183 | char *start = buf; | |
184 | unsigned long reg, value; | |
185 | int step = 1; | |
186 | struct snd_soc_codec *codec = file->private_data; | |
187 | ||
188 | buf_size = min(count, (sizeof(buf)-1)); | |
189 | if (copy_from_user(buf, user_buf, buf_size)) | |
190 | return -EFAULT; | |
191 | buf[buf_size] = 0; | |
192 | ||
193 | if (codec->reg_cache_step) | |
194 | step = codec->reg_cache_step; | |
195 | ||
196 | while (*start == ' ') | |
197 | start++; | |
198 | reg = simple_strtoul(start, &start, 16); | |
199 | if ((reg >= codec->reg_cache_size) || (reg % step)) | |
200 | return -EINVAL; | |
201 | while (*start == ' ') | |
202 | start++; | |
203 | if (strict_strtoul(start, 16, &value)) | |
204 | return -EINVAL; | |
205 | codec->write(codec, reg, value); | |
206 | return buf_size; | |
207 | } | |
208 | ||
209 | static const struct file_operations codec_reg_fops = { | |
210 | .open = codec_reg_open_file, | |
211 | .read = codec_reg_read_file, | |
212 | .write = codec_reg_write_file, | |
213 | }; | |
214 | ||
215 | static void soc_init_codec_debugfs(struct snd_soc_codec *codec) | |
216 | { | |
217 | char codec_root[128]; | |
218 | ||
219 | if (codec->dev) | |
220 | snprintf(codec_root, sizeof(codec_root), | |
221 | "%s.%s", codec->name, dev_name(codec->dev)); | |
222 | else | |
223 | snprintf(codec_root, sizeof(codec_root), | |
224 | "%s", codec->name); | |
225 | ||
226 | codec->debugfs_codec_root = debugfs_create_dir(codec_root, | |
227 | debugfs_root); | |
228 | if (!codec->debugfs_codec_root) { | |
229 | printk(KERN_WARNING | |
230 | "ASoC: Failed to create codec debugfs directory\n"); | |
231 | return; | |
232 | } | |
233 | ||
234 | codec->debugfs_reg = debugfs_create_file("codec_reg", 0644, | |
235 | codec->debugfs_codec_root, | |
236 | codec, &codec_reg_fops); | |
237 | if (!codec->debugfs_reg) | |
238 | printk(KERN_WARNING | |
239 | "ASoC: Failed to create codec register debugfs file\n"); | |
240 | ||
241 | codec->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0744, | |
242 | codec->debugfs_codec_root, | |
243 | &codec->pop_time); | |
244 | if (!codec->debugfs_pop_time) | |
245 | printk(KERN_WARNING | |
246 | "Failed to create pop time debugfs file\n"); | |
247 | ||
248 | codec->debugfs_dapm = debugfs_create_dir("dapm", | |
249 | codec->debugfs_codec_root); | |
250 | if (!codec->debugfs_dapm) | |
251 | printk(KERN_WARNING | |
252 | "Failed to create DAPM debugfs directory\n"); | |
253 | ||
254 | snd_soc_dapm_debugfs_init(codec); | |
255 | } | |
256 | ||
257 | static void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec) | |
258 | { | |
259 | debugfs_remove_recursive(codec->debugfs_codec_root); | |
260 | } | |
261 | ||
262 | #else | |
263 | ||
264 | static inline void soc_init_codec_debugfs(struct snd_soc_codec *codec) | |
265 | { | |
266 | } | |
267 | ||
268 | static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec) | |
269 | { | |
270 | } | |
271 | #endif | |
272 | ||
db2a4165 FM |
273 | #ifdef CONFIG_SND_SOC_AC97_BUS |
274 | /* unregister ac97 codec */ | |
275 | static int soc_ac97_dev_unregister(struct snd_soc_codec *codec) | |
276 | { | |
277 | if (codec->ac97->dev.bus) | |
278 | device_unregister(&codec->ac97->dev); | |
279 | return 0; | |
280 | } | |
281 | ||
282 | /* stop no dev release warning */ | |
283 | static void soc_ac97_device_release(struct device *dev){} | |
284 | ||
285 | /* register ac97 codec to bus */ | |
286 | static int soc_ac97_dev_register(struct snd_soc_codec *codec) | |
287 | { | |
288 | int err; | |
289 | ||
290 | codec->ac97->dev.bus = &ac97_bus_type; | |
4ac5c61f | 291 | codec->ac97->dev.parent = codec->card->dev; |
db2a4165 FM |
292 | codec->ac97->dev.release = soc_ac97_device_release; |
293 | ||
bb072bf0 KS |
294 | dev_set_name(&codec->ac97->dev, "%d-%d:%s", |
295 | codec->card->number, 0, codec->name); | |
db2a4165 FM |
296 | err = device_register(&codec->ac97->dev); |
297 | if (err < 0) { | |
298 | snd_printk(KERN_ERR "Can't register ac97 bus\n"); | |
299 | codec->ac97->dev.bus = NULL; | |
300 | return err; | |
301 | } | |
302 | return 0; | |
303 | } | |
304 | #endif | |
305 | ||
06f409d7 MB |
306 | static int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream) |
307 | { | |
308 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
309 | struct snd_soc_device *socdev = rtd->socdev; | |
310 | struct snd_soc_card *card = socdev->card; | |
311 | struct snd_soc_dai_link *machine = rtd->dai; | |
312 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; | |
313 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
314 | int ret; | |
315 | ||
316 | if (codec_dai->symmetric_rates || cpu_dai->symmetric_rates || | |
317 | machine->symmetric_rates) { | |
318 | dev_dbg(card->dev, "Symmetry forces %dHz rate\n", | |
319 | machine->rate); | |
320 | ||
321 | ret = snd_pcm_hw_constraint_minmax(substream->runtime, | |
322 | SNDRV_PCM_HW_PARAM_RATE, | |
323 | machine->rate, | |
324 | machine->rate); | |
325 | if (ret < 0) { | |
326 | dev_err(card->dev, | |
327 | "Unable to apply rate symmetry constraint: %d\n", ret); | |
328 | return ret; | |
329 | } | |
330 | } | |
331 | ||
332 | return 0; | |
333 | } | |
334 | ||
db2a4165 FM |
335 | /* |
336 | * Called by ALSA when a PCM substream is opened, the runtime->hw record is | |
337 | * then initialized and any private data can be allocated. This also calls | |
338 | * startup for the cpu DAI, platform, machine and codec DAI. | |
339 | */ | |
340 | static int soc_pcm_open(struct snd_pcm_substream *substream) | |
341 | { | |
342 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
343 | struct snd_soc_device *socdev = rtd->socdev; | |
87689d56 | 344 | struct snd_soc_card *card = socdev->card; |
db2a4165 | 345 | struct snd_pcm_runtime *runtime = substream->runtime; |
cb666e5b | 346 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 | 347 | struct snd_soc_platform *platform = card->platform; |
3c4b266f LG |
348 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
349 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
350 | int ret = 0; |
351 | ||
352 | mutex_lock(&pcm_mutex); | |
353 | ||
354 | /* startup the audio subsystem */ | |
6335d055 EM |
355 | if (cpu_dai->ops->startup) { |
356 | ret = cpu_dai->ops->startup(substream, cpu_dai); | |
db2a4165 FM |
357 | if (ret < 0) { |
358 | printk(KERN_ERR "asoc: can't open interface %s\n", | |
cb666e5b | 359 | cpu_dai->name); |
db2a4165 FM |
360 | goto out; |
361 | } | |
362 | } | |
363 | ||
364 | if (platform->pcm_ops->open) { | |
365 | ret = platform->pcm_ops->open(substream); | |
366 | if (ret < 0) { | |
367 | printk(KERN_ERR "asoc: can't open platform %s\n", platform->name); | |
368 | goto platform_err; | |
369 | } | |
370 | } | |
371 | ||
6335d055 EM |
372 | if (codec_dai->ops->startup) { |
373 | ret = codec_dai->ops->startup(substream, codec_dai); | |
db2a4165 | 374 | if (ret < 0) { |
cb666e5b LG |
375 | printk(KERN_ERR "asoc: can't open codec %s\n", |
376 | codec_dai->name); | |
377 | goto codec_dai_err; | |
db2a4165 FM |
378 | } |
379 | } | |
380 | ||
cb666e5b LG |
381 | if (machine->ops && machine->ops->startup) { |
382 | ret = machine->ops->startup(substream); | |
db2a4165 | 383 | if (ret < 0) { |
cb666e5b LG |
384 | printk(KERN_ERR "asoc: %s startup failed\n", machine->name); |
385 | goto machine_err; | |
db2a4165 FM |
386 | } |
387 | } | |
388 | ||
db2a4165 FM |
389 | /* Check that the codec and cpu DAI's are compatible */ |
390 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
391 | runtime->hw.rate_min = | |
3ff3f64b MB |
392 | max(codec_dai->playback.rate_min, |
393 | cpu_dai->playback.rate_min); | |
db2a4165 | 394 | runtime->hw.rate_max = |
3ff3f64b MB |
395 | min(codec_dai->playback.rate_max, |
396 | cpu_dai->playback.rate_max); | |
db2a4165 | 397 | runtime->hw.channels_min = |
cb666e5b LG |
398 | max(codec_dai->playback.channels_min, |
399 | cpu_dai->playback.channels_min); | |
db2a4165 | 400 | runtime->hw.channels_max = |
cb666e5b LG |
401 | min(codec_dai->playback.channels_max, |
402 | cpu_dai->playback.channels_max); | |
403 | runtime->hw.formats = | |
404 | codec_dai->playback.formats & cpu_dai->playback.formats; | |
405 | runtime->hw.rates = | |
406 | codec_dai->playback.rates & cpu_dai->playback.rates; | |
db2a4165 FM |
407 | } else { |
408 | runtime->hw.rate_min = | |
3ff3f64b MB |
409 | max(codec_dai->capture.rate_min, |
410 | cpu_dai->capture.rate_min); | |
db2a4165 | 411 | runtime->hw.rate_max = |
3ff3f64b MB |
412 | min(codec_dai->capture.rate_max, |
413 | cpu_dai->capture.rate_max); | |
db2a4165 | 414 | runtime->hw.channels_min = |
cb666e5b LG |
415 | max(codec_dai->capture.channels_min, |
416 | cpu_dai->capture.channels_min); | |
db2a4165 | 417 | runtime->hw.channels_max = |
cb666e5b LG |
418 | min(codec_dai->capture.channels_max, |
419 | cpu_dai->capture.channels_max); | |
420 | runtime->hw.formats = | |
421 | codec_dai->capture.formats & cpu_dai->capture.formats; | |
422 | runtime->hw.rates = | |
423 | codec_dai->capture.rates & cpu_dai->capture.rates; | |
db2a4165 FM |
424 | } |
425 | ||
426 | snd_pcm_limit_hw_rates(runtime); | |
427 | if (!runtime->hw.rates) { | |
428 | printk(KERN_ERR "asoc: %s <-> %s No matching rates\n", | |
cb666e5b | 429 | codec_dai->name, cpu_dai->name); |
bb1c0478 | 430 | goto config_err; |
db2a4165 FM |
431 | } |
432 | if (!runtime->hw.formats) { | |
433 | printk(KERN_ERR "asoc: %s <-> %s No matching formats\n", | |
cb666e5b | 434 | codec_dai->name, cpu_dai->name); |
bb1c0478 | 435 | goto config_err; |
db2a4165 FM |
436 | } |
437 | if (!runtime->hw.channels_min || !runtime->hw.channels_max) { | |
438 | printk(KERN_ERR "asoc: %s <-> %s No matching channels\n", | |
cb666e5b | 439 | codec_dai->name, cpu_dai->name); |
bb1c0478 | 440 | goto config_err; |
db2a4165 FM |
441 | } |
442 | ||
06f409d7 MB |
443 | /* Symmetry only applies if we've already got an active stream. */ |
444 | if (cpu_dai->active || codec_dai->active) { | |
445 | ret = soc_pcm_apply_symmetry(substream); | |
446 | if (ret != 0) | |
bb1c0478 | 447 | goto config_err; |
06f409d7 MB |
448 | } |
449 | ||
f24368c2 MB |
450 | pr_debug("asoc: %s <-> %s info:\n", codec_dai->name, cpu_dai->name); |
451 | pr_debug("asoc: rate mask 0x%x\n", runtime->hw.rates); | |
452 | pr_debug("asoc: min ch %d max ch %d\n", runtime->hw.channels_min, | |
453 | runtime->hw.channels_max); | |
454 | pr_debug("asoc: min rate %d max rate %d\n", runtime->hw.rate_min, | |
455 | runtime->hw.rate_max); | |
db2a4165 | 456 | |
db2a4165 | 457 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
cb666e5b | 458 | cpu_dai->playback.active = codec_dai->playback.active = 1; |
db2a4165 | 459 | else |
cb666e5b LG |
460 | cpu_dai->capture.active = codec_dai->capture.active = 1; |
461 | cpu_dai->active = codec_dai->active = 1; | |
462 | cpu_dai->runtime = runtime; | |
6627a653 | 463 | card->codec->active++; |
db2a4165 FM |
464 | mutex_unlock(&pcm_mutex); |
465 | return 0; | |
466 | ||
bb1c0478 | 467 | config_err: |
db2a4165 FM |
468 | if (machine->ops && machine->ops->shutdown) |
469 | machine->ops->shutdown(substream); | |
470 | ||
bb1c0478 JB |
471 | machine_err: |
472 | if (codec_dai->ops->shutdown) | |
473 | codec_dai->ops->shutdown(substream, codec_dai); | |
474 | ||
cb666e5b | 475 | codec_dai_err: |
db2a4165 FM |
476 | if (platform->pcm_ops->close) |
477 | platform->pcm_ops->close(substream); | |
478 | ||
479 | platform_err: | |
6335d055 EM |
480 | if (cpu_dai->ops->shutdown) |
481 | cpu_dai->ops->shutdown(substream, cpu_dai); | |
db2a4165 FM |
482 | out: |
483 | mutex_unlock(&pcm_mutex); | |
484 | return ret; | |
485 | } | |
486 | ||
487 | /* | |
3a4fa0a2 | 488 | * Power down the audio subsystem pmdown_time msecs after close is called. |
db2a4165 FM |
489 | * This is to ensure there are no pops or clicks in between any music tracks |
490 | * due to DAPM power cycling. | |
491 | */ | |
4484bb2e | 492 | static void close_delayed_work(struct work_struct *work) |
db2a4165 | 493 | { |
6308419a MB |
494 | struct snd_soc_card *card = container_of(work, struct snd_soc_card, |
495 | delayed_work.work); | |
6627a653 | 496 | struct snd_soc_codec *codec = card->codec; |
3c4b266f | 497 | struct snd_soc_dai *codec_dai; |
db2a4165 FM |
498 | int i; |
499 | ||
500 | mutex_lock(&pcm_mutex); | |
3ff3f64b | 501 | for (i = 0; i < codec->num_dai; i++) { |
db2a4165 FM |
502 | codec_dai = &codec->dai[i]; |
503 | ||
f24368c2 MB |
504 | pr_debug("pop wq checking: %s status: %s waiting: %s\n", |
505 | codec_dai->playback.stream_name, | |
506 | codec_dai->playback.active ? "active" : "inactive", | |
507 | codec_dai->pop_wait ? "yes" : "no"); | |
db2a4165 FM |
508 | |
509 | /* are we waiting on this codec DAI stream */ | |
510 | if (codec_dai->pop_wait == 1) { | |
db2a4165 | 511 | codec_dai->pop_wait = 0; |
0b4d221b LG |
512 | snd_soc_dapm_stream_event(codec, |
513 | codec_dai->playback.stream_name, | |
db2a4165 | 514 | SND_SOC_DAPM_STREAM_STOP); |
db2a4165 FM |
515 | } |
516 | } | |
517 | mutex_unlock(&pcm_mutex); | |
518 | } | |
519 | ||
520 | /* | |
521 | * Called by ALSA when a PCM substream is closed. Private data can be | |
522 | * freed here. The cpu DAI, codec DAI, machine and platform are also | |
523 | * shutdown. | |
524 | */ | |
525 | static int soc_codec_close(struct snd_pcm_substream *substream) | |
526 | { | |
527 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
528 | struct snd_soc_device *socdev = rtd->socdev; | |
6308419a | 529 | struct snd_soc_card *card = socdev->card; |
cb666e5b | 530 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 | 531 | struct snd_soc_platform *platform = card->platform; |
3c4b266f LG |
532 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
533 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
6627a653 | 534 | struct snd_soc_codec *codec = card->codec; |
db2a4165 FM |
535 | |
536 | mutex_lock(&pcm_mutex); | |
537 | ||
538 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
cb666e5b | 539 | cpu_dai->playback.active = codec_dai->playback.active = 0; |
db2a4165 | 540 | else |
cb666e5b | 541 | cpu_dai->capture.active = codec_dai->capture.active = 0; |
db2a4165 | 542 | |
cb666e5b LG |
543 | if (codec_dai->playback.active == 0 && |
544 | codec_dai->capture.active == 0) { | |
545 | cpu_dai->active = codec_dai->active = 0; | |
db2a4165 FM |
546 | } |
547 | codec->active--; | |
548 | ||
6010b2da MB |
549 | /* Muting the DAC suppresses artifacts caused during digital |
550 | * shutdown, for example from stopping clocks. | |
551 | */ | |
552 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
553 | snd_soc_dai_digital_mute(codec_dai, 1); | |
554 | ||
6335d055 EM |
555 | if (cpu_dai->ops->shutdown) |
556 | cpu_dai->ops->shutdown(substream, cpu_dai); | |
db2a4165 | 557 | |
6335d055 EM |
558 | if (codec_dai->ops->shutdown) |
559 | codec_dai->ops->shutdown(substream, codec_dai); | |
db2a4165 FM |
560 | |
561 | if (machine->ops && machine->ops->shutdown) | |
562 | machine->ops->shutdown(substream); | |
563 | ||
564 | if (platform->pcm_ops->close) | |
565 | platform->pcm_ops->close(substream); | |
cb666e5b | 566 | cpu_dai->runtime = NULL; |
db2a4165 FM |
567 | |
568 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
569 | /* start delayed pop wq here for playback streams */ | |
cb666e5b | 570 | codec_dai->pop_wait = 1; |
6308419a | 571 | schedule_delayed_work(&card->delayed_work, |
96dd3622 | 572 | msecs_to_jiffies(card->pmdown_time)); |
db2a4165 FM |
573 | } else { |
574 | /* capture streams can be powered down now */ | |
cb666e5b | 575 | snd_soc_dapm_stream_event(codec, |
0b4d221b LG |
576 | codec_dai->capture.stream_name, |
577 | SND_SOC_DAPM_STREAM_STOP); | |
db2a4165 FM |
578 | } |
579 | ||
580 | mutex_unlock(&pcm_mutex); | |
581 | return 0; | |
582 | } | |
583 | ||
584 | /* | |
585 | * Called by ALSA when the PCM substream is prepared, can set format, sample | |
586 | * rate, etc. This function is non atomic and can be called multiple times, | |
587 | * it can refer to the runtime info. | |
588 | */ | |
589 | static int soc_pcm_prepare(struct snd_pcm_substream *substream) | |
590 | { | |
591 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
592 | struct snd_soc_device *socdev = rtd->socdev; | |
6308419a | 593 | struct snd_soc_card *card = socdev->card; |
cb666e5b | 594 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 | 595 | struct snd_soc_platform *platform = card->platform; |
3c4b266f LG |
596 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
597 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
6627a653 | 598 | struct snd_soc_codec *codec = card->codec; |
db2a4165 FM |
599 | int ret = 0; |
600 | ||
601 | mutex_lock(&pcm_mutex); | |
cb666e5b LG |
602 | |
603 | if (machine->ops && machine->ops->prepare) { | |
604 | ret = machine->ops->prepare(substream); | |
605 | if (ret < 0) { | |
606 | printk(KERN_ERR "asoc: machine prepare error\n"); | |
607 | goto out; | |
608 | } | |
609 | } | |
610 | ||
db2a4165 FM |
611 | if (platform->pcm_ops->prepare) { |
612 | ret = platform->pcm_ops->prepare(substream); | |
a71a468a LG |
613 | if (ret < 0) { |
614 | printk(KERN_ERR "asoc: platform prepare error\n"); | |
db2a4165 | 615 | goto out; |
a71a468a | 616 | } |
db2a4165 FM |
617 | } |
618 | ||
6335d055 EM |
619 | if (codec_dai->ops->prepare) { |
620 | ret = codec_dai->ops->prepare(substream, codec_dai); | |
a71a468a LG |
621 | if (ret < 0) { |
622 | printk(KERN_ERR "asoc: codec DAI prepare error\n"); | |
db2a4165 | 623 | goto out; |
a71a468a | 624 | } |
db2a4165 FM |
625 | } |
626 | ||
6335d055 EM |
627 | if (cpu_dai->ops->prepare) { |
628 | ret = cpu_dai->ops->prepare(substream, cpu_dai); | |
cb666e5b LG |
629 | if (ret < 0) { |
630 | printk(KERN_ERR "asoc: cpu DAI prepare error\n"); | |
631 | goto out; | |
632 | } | |
633 | } | |
db2a4165 | 634 | |
d45f6219 MB |
635 | /* cancel any delayed stream shutdown that is pending */ |
636 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
637 | codec_dai->pop_wait) { | |
638 | codec_dai->pop_wait = 0; | |
6308419a | 639 | cancel_delayed_work(&card->delayed_work); |
d45f6219 | 640 | } |
db2a4165 | 641 | |
452c5eaa MB |
642 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
643 | snd_soc_dapm_stream_event(codec, | |
644 | codec_dai->playback.stream_name, | |
645 | SND_SOC_DAPM_STREAM_START); | |
646 | else | |
647 | snd_soc_dapm_stream_event(codec, | |
648 | codec_dai->capture.stream_name, | |
649 | SND_SOC_DAPM_STREAM_START); | |
8c6529db | 650 | |
452c5eaa | 651 | snd_soc_dai_digital_mute(codec_dai, 0); |
db2a4165 FM |
652 | |
653 | out: | |
654 | mutex_unlock(&pcm_mutex); | |
655 | return ret; | |
656 | } | |
657 | ||
658 | /* | |
659 | * Called by ALSA when the hardware params are set by application. This | |
660 | * function can also be called multiple times and can allocate buffers | |
661 | * (using snd_pcm_lib_* ). It's non-atomic. | |
662 | */ | |
663 | static int soc_pcm_hw_params(struct snd_pcm_substream *substream, | |
664 | struct snd_pcm_hw_params *params) | |
665 | { | |
666 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
667 | struct snd_soc_device *socdev = rtd->socdev; | |
cb666e5b | 668 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 MB |
669 | struct snd_soc_card *card = socdev->card; |
670 | struct snd_soc_platform *platform = card->platform; | |
3c4b266f LG |
671 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
672 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
673 | int ret = 0; |
674 | ||
675 | mutex_lock(&pcm_mutex); | |
676 | ||
cb666e5b LG |
677 | if (machine->ops && machine->ops->hw_params) { |
678 | ret = machine->ops->hw_params(substream, params); | |
679 | if (ret < 0) { | |
680 | printk(KERN_ERR "asoc: machine hw_params failed\n"); | |
db2a4165 | 681 | goto out; |
cb666e5b | 682 | } |
db2a4165 FM |
683 | } |
684 | ||
6335d055 EM |
685 | if (codec_dai->ops->hw_params) { |
686 | ret = codec_dai->ops->hw_params(substream, params, codec_dai); | |
db2a4165 FM |
687 | if (ret < 0) { |
688 | printk(KERN_ERR "asoc: can't set codec %s hw params\n", | |
cb666e5b LG |
689 | codec_dai->name); |
690 | goto codec_err; | |
db2a4165 FM |
691 | } |
692 | } | |
693 | ||
6335d055 EM |
694 | if (cpu_dai->ops->hw_params) { |
695 | ret = cpu_dai->ops->hw_params(substream, params, cpu_dai); | |
db2a4165 | 696 | if (ret < 0) { |
3ff3f64b | 697 | printk(KERN_ERR "asoc: interface %s hw params failed\n", |
cb666e5b | 698 | cpu_dai->name); |
db2a4165 FM |
699 | goto interface_err; |
700 | } | |
701 | } | |
702 | ||
703 | if (platform->pcm_ops->hw_params) { | |
704 | ret = platform->pcm_ops->hw_params(substream, params); | |
705 | if (ret < 0) { | |
3ff3f64b | 706 | printk(KERN_ERR "asoc: platform %s hw params failed\n", |
db2a4165 FM |
707 | platform->name); |
708 | goto platform_err; | |
709 | } | |
710 | } | |
711 | ||
06f409d7 MB |
712 | machine->rate = params_rate(params); |
713 | ||
db2a4165 FM |
714 | out: |
715 | mutex_unlock(&pcm_mutex); | |
716 | return ret; | |
717 | ||
db2a4165 | 718 | platform_err: |
6335d055 EM |
719 | if (cpu_dai->ops->hw_free) |
720 | cpu_dai->ops->hw_free(substream, cpu_dai); | |
db2a4165 FM |
721 | |
722 | interface_err: | |
6335d055 EM |
723 | if (codec_dai->ops->hw_free) |
724 | codec_dai->ops->hw_free(substream, codec_dai); | |
cb666e5b LG |
725 | |
726 | codec_err: | |
3ff3f64b | 727 | if (machine->ops && machine->ops->hw_free) |
cb666e5b | 728 | machine->ops->hw_free(substream); |
db2a4165 FM |
729 | |
730 | mutex_unlock(&pcm_mutex); | |
731 | return ret; | |
732 | } | |
733 | ||
734 | /* | |
735 | * Free's resources allocated by hw_params, can be called multiple times | |
736 | */ | |
737 | static int soc_pcm_hw_free(struct snd_pcm_substream *substream) | |
738 | { | |
739 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
740 | struct snd_soc_device *socdev = rtd->socdev; | |
cb666e5b | 741 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 MB |
742 | struct snd_soc_card *card = socdev->card; |
743 | struct snd_soc_platform *platform = card->platform; | |
3c4b266f LG |
744 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
745 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
6627a653 | 746 | struct snd_soc_codec *codec = card->codec; |
db2a4165 FM |
747 | |
748 | mutex_lock(&pcm_mutex); | |
749 | ||
750 | /* apply codec digital mute */ | |
8c6529db LG |
751 | if (!codec->active) |
752 | snd_soc_dai_digital_mute(codec_dai, 1); | |
db2a4165 FM |
753 | |
754 | /* free any machine hw params */ | |
755 | if (machine->ops && machine->ops->hw_free) | |
756 | machine->ops->hw_free(substream); | |
757 | ||
758 | /* free any DMA resources */ | |
759 | if (platform->pcm_ops->hw_free) | |
760 | platform->pcm_ops->hw_free(substream); | |
761 | ||
762 | /* now free hw params for the DAI's */ | |
6335d055 EM |
763 | if (codec_dai->ops->hw_free) |
764 | codec_dai->ops->hw_free(substream, codec_dai); | |
db2a4165 | 765 | |
6335d055 EM |
766 | if (cpu_dai->ops->hw_free) |
767 | cpu_dai->ops->hw_free(substream, cpu_dai); | |
db2a4165 FM |
768 | |
769 | mutex_unlock(&pcm_mutex); | |
770 | return 0; | |
771 | } | |
772 | ||
773 | static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd) | |
774 | { | |
775 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
776 | struct snd_soc_device *socdev = rtd->socdev; | |
87689d56 | 777 | struct snd_soc_card *card= socdev->card; |
cb666e5b | 778 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 | 779 | struct snd_soc_platform *platform = card->platform; |
3c4b266f LG |
780 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
781 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
782 | int ret; |
783 | ||
6335d055 EM |
784 | if (codec_dai->ops->trigger) { |
785 | ret = codec_dai->ops->trigger(substream, cmd, codec_dai); | |
db2a4165 FM |
786 | if (ret < 0) |
787 | return ret; | |
788 | } | |
789 | ||
790 | if (platform->pcm_ops->trigger) { | |
791 | ret = platform->pcm_ops->trigger(substream, cmd); | |
792 | if (ret < 0) | |
793 | return ret; | |
794 | } | |
795 | ||
6335d055 EM |
796 | if (cpu_dai->ops->trigger) { |
797 | ret = cpu_dai->ops->trigger(substream, cmd, cpu_dai); | |
db2a4165 FM |
798 | if (ret < 0) |
799 | return ret; | |
800 | } | |
801 | return 0; | |
802 | } | |
803 | ||
804 | /* ASoC PCM operations */ | |
805 | static struct snd_pcm_ops soc_pcm_ops = { | |
806 | .open = soc_pcm_open, | |
807 | .close = soc_codec_close, | |
808 | .hw_params = soc_pcm_hw_params, | |
809 | .hw_free = soc_pcm_hw_free, | |
810 | .prepare = soc_pcm_prepare, | |
811 | .trigger = soc_pcm_trigger, | |
812 | }; | |
813 | ||
814 | #ifdef CONFIG_PM | |
815 | /* powers down audio subsystem for suspend */ | |
416356fc | 816 | static int soc_suspend(struct device *dev) |
db2a4165 | 817 | { |
416356fc | 818 | struct platform_device *pdev = to_platform_device(dev); |
3ff3f64b | 819 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
87506549 | 820 | struct snd_soc_card *card = socdev->card; |
87689d56 | 821 | struct snd_soc_platform *platform = card->platform; |
3ff3f64b | 822 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; |
6627a653 | 823 | struct snd_soc_codec *codec = card->codec; |
db2a4165 FM |
824 | int i; |
825 | ||
e3509ff0 DM |
826 | /* If the initialization of this soc device failed, there is no codec |
827 | * associated with it. Just bail out in this case. | |
828 | */ | |
829 | if (!codec) | |
830 | return 0; | |
831 | ||
6ed25978 AG |
832 | /* Due to the resume being scheduled into a workqueue we could |
833 | * suspend before that's finished - wait for it to complete. | |
834 | */ | |
835 | snd_power_lock(codec->card); | |
836 | snd_power_wait(codec->card, SNDRV_CTL_POWER_D0); | |
837 | snd_power_unlock(codec->card); | |
838 | ||
839 | /* we're going to block userspace touching us until resume completes */ | |
840 | snd_power_change_state(codec->card, SNDRV_CTL_POWER_D3hot); | |
841 | ||
db2a4165 | 842 | /* mute any active DAC's */ |
dee89c4d MB |
843 | for (i = 0; i < card->num_links; i++) { |
844 | struct snd_soc_dai *dai = card->dai_link[i].codec_dai; | |
6335d055 EM |
845 | if (dai->ops->digital_mute && dai->playback.active) |
846 | dai->ops->digital_mute(dai, 1); | |
db2a4165 FM |
847 | } |
848 | ||
4ccab3e7 | 849 | /* suspend all pcms */ |
87506549 MB |
850 | for (i = 0; i < card->num_links; i++) |
851 | snd_pcm_suspend_all(card->dai_link[i].pcm); | |
4ccab3e7 | 852 | |
87506549 | 853 | if (card->suspend_pre) |
416356fc | 854 | card->suspend_pre(pdev, PMSG_SUSPEND); |
db2a4165 | 855 | |
87506549 MB |
856 | for (i = 0; i < card->num_links; i++) { |
857 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
3ba9e10a | 858 | if (cpu_dai->suspend && !cpu_dai->ac97_control) |
dc7d7b83 | 859 | cpu_dai->suspend(cpu_dai); |
db2a4165 | 860 | if (platform->suspend) |
07c84d04 | 861 | platform->suspend(cpu_dai); |
db2a4165 FM |
862 | } |
863 | ||
864 | /* close any waiting streams and save state */ | |
6308419a | 865 | run_delayed_work(&card->delayed_work); |
0be9898a | 866 | codec->suspend_bias_level = codec->bias_level; |
db2a4165 | 867 | |
3ff3f64b | 868 | for (i = 0; i < codec->num_dai; i++) { |
db2a4165 FM |
869 | char *stream = codec->dai[i].playback.stream_name; |
870 | if (stream != NULL) | |
871 | snd_soc_dapm_stream_event(codec, stream, | |
872 | SND_SOC_DAPM_STREAM_SUSPEND); | |
873 | stream = codec->dai[i].capture.stream_name; | |
874 | if (stream != NULL) | |
875 | snd_soc_dapm_stream_event(codec, stream, | |
876 | SND_SOC_DAPM_STREAM_SUSPEND); | |
877 | } | |
878 | ||
879 | if (codec_dev->suspend) | |
416356fc | 880 | codec_dev->suspend(pdev, PMSG_SUSPEND); |
db2a4165 | 881 | |
87506549 MB |
882 | for (i = 0; i < card->num_links; i++) { |
883 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
3ba9e10a | 884 | if (cpu_dai->suspend && cpu_dai->ac97_control) |
dc7d7b83 | 885 | cpu_dai->suspend(cpu_dai); |
db2a4165 FM |
886 | } |
887 | ||
87506549 | 888 | if (card->suspend_post) |
416356fc | 889 | card->suspend_post(pdev, PMSG_SUSPEND); |
db2a4165 FM |
890 | |
891 | return 0; | |
892 | } | |
893 | ||
6ed25978 AG |
894 | /* deferred resume work, so resume can complete before we finished |
895 | * setting our codec back up, which can be very slow on I2C | |
896 | */ | |
897 | static void soc_resume_deferred(struct work_struct *work) | |
db2a4165 | 898 | { |
6308419a MB |
899 | struct snd_soc_card *card = container_of(work, |
900 | struct snd_soc_card, | |
901 | deferred_resume_work); | |
902 | struct snd_soc_device *socdev = card->socdev; | |
87689d56 | 903 | struct snd_soc_platform *platform = card->platform; |
3ff3f64b | 904 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; |
6627a653 | 905 | struct snd_soc_codec *codec = card->codec; |
6ed25978 | 906 | struct platform_device *pdev = to_platform_device(socdev->dev); |
db2a4165 FM |
907 | int i; |
908 | ||
6ed25978 AG |
909 | /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time, |
910 | * so userspace apps are blocked from touching us | |
911 | */ | |
912 | ||
fde22f27 | 913 | dev_dbg(socdev->dev, "starting resume work\n"); |
6ed25978 | 914 | |
87506549 MB |
915 | if (card->resume_pre) |
916 | card->resume_pre(pdev); | |
db2a4165 | 917 | |
87506549 MB |
918 | for (i = 0; i < card->num_links; i++) { |
919 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
3ba9e10a | 920 | if (cpu_dai->resume && cpu_dai->ac97_control) |
dc7d7b83 | 921 | cpu_dai->resume(cpu_dai); |
db2a4165 FM |
922 | } |
923 | ||
924 | if (codec_dev->resume) | |
925 | codec_dev->resume(pdev); | |
926 | ||
3ff3f64b MB |
927 | for (i = 0; i < codec->num_dai; i++) { |
928 | char *stream = codec->dai[i].playback.stream_name; | |
db2a4165 FM |
929 | if (stream != NULL) |
930 | snd_soc_dapm_stream_event(codec, stream, | |
931 | SND_SOC_DAPM_STREAM_RESUME); | |
932 | stream = codec->dai[i].capture.stream_name; | |
933 | if (stream != NULL) | |
934 | snd_soc_dapm_stream_event(codec, stream, | |
935 | SND_SOC_DAPM_STREAM_RESUME); | |
936 | } | |
937 | ||
3ff3f64b | 938 | /* unmute any active DACs */ |
dee89c4d MB |
939 | for (i = 0; i < card->num_links; i++) { |
940 | struct snd_soc_dai *dai = card->dai_link[i].codec_dai; | |
6335d055 EM |
941 | if (dai->ops->digital_mute && dai->playback.active) |
942 | dai->ops->digital_mute(dai, 0); | |
db2a4165 FM |
943 | } |
944 | ||
87506549 MB |
945 | for (i = 0; i < card->num_links; i++) { |
946 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
3ba9e10a | 947 | if (cpu_dai->resume && !cpu_dai->ac97_control) |
dc7d7b83 | 948 | cpu_dai->resume(cpu_dai); |
db2a4165 | 949 | if (platform->resume) |
07c84d04 | 950 | platform->resume(cpu_dai); |
db2a4165 FM |
951 | } |
952 | ||
87506549 MB |
953 | if (card->resume_post) |
954 | card->resume_post(pdev); | |
db2a4165 | 955 | |
fde22f27 | 956 | dev_dbg(socdev->dev, "resume work completed\n"); |
6ed25978 AG |
957 | |
958 | /* userspace can access us now we are back as we were before */ | |
959 | snd_power_change_state(codec->card, SNDRV_CTL_POWER_D0); | |
960 | } | |
961 | ||
962 | /* powers up audio subsystem after a suspend */ | |
416356fc | 963 | static int soc_resume(struct device *dev) |
6ed25978 | 964 | { |
416356fc | 965 | struct platform_device *pdev = to_platform_device(dev); |
6ed25978 | 966 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
6308419a | 967 | struct snd_soc_card *card = socdev->card; |
64ab9baa | 968 | struct snd_soc_dai *cpu_dai = card->dai_link[0].cpu_dai; |
6ed25978 | 969 | |
b9dd94a8 PU |
970 | /* If the initialization of this soc device failed, there is no codec |
971 | * associated with it. Just bail out in this case. | |
972 | */ | |
973 | if (!card->codec) | |
974 | return 0; | |
975 | ||
64ab9baa MB |
976 | /* AC97 devices might have other drivers hanging off them so |
977 | * need to resume immediately. Other drivers don't have that | |
978 | * problem and may take a substantial amount of time to resume | |
979 | * due to I/O costs and anti-pop so handle them out of line. | |
980 | */ | |
981 | if (cpu_dai->ac97_control) { | |
982 | dev_dbg(socdev->dev, "Resuming AC97 immediately\n"); | |
983 | soc_resume_deferred(&card->deferred_resume_work); | |
984 | } else { | |
985 | dev_dbg(socdev->dev, "Scheduling resume work\n"); | |
986 | if (!schedule_work(&card->deferred_resume_work)) | |
987 | dev_err(socdev->dev, "resume work item may be lost\n"); | |
988 | } | |
6ed25978 | 989 | |
db2a4165 FM |
990 | return 0; |
991 | } | |
db2a4165 FM |
992 | #else |
993 | #define soc_suspend NULL | |
994 | #define soc_resume NULL | |
995 | #endif | |
996 | ||
02a06d30 BS |
997 | static struct snd_soc_dai_ops null_dai_ops = { |
998 | }; | |
999 | ||
435c5e25 | 1000 | static void snd_soc_instantiate_card(struct snd_soc_card *card) |
db2a4165 | 1001 | { |
435c5e25 MB |
1002 | struct platform_device *pdev = container_of(card->dev, |
1003 | struct platform_device, | |
1004 | dev); | |
1005 | struct snd_soc_codec_device *codec_dev = card->socdev->codec_dev; | |
fe3e78e0 | 1006 | struct snd_soc_codec *codec; |
435c5e25 MB |
1007 | struct snd_soc_platform *platform; |
1008 | struct snd_soc_dai *dai; | |
6b05eda6 | 1009 | int i, found, ret, ac97; |
435c5e25 MB |
1010 | |
1011 | if (card->instantiated) | |
1012 | return; | |
1013 | ||
1014 | found = 0; | |
1015 | list_for_each_entry(platform, &platform_list, list) | |
1016 | if (card->platform == platform) { | |
1017 | found = 1; | |
1018 | break; | |
1019 | } | |
1020 | if (!found) { | |
1021 | dev_dbg(card->dev, "Platform %s not registered\n", | |
1022 | card->platform->name); | |
1023 | return; | |
1024 | } | |
6308419a | 1025 | |
6b05eda6 | 1026 | ac97 = 0; |
435c5e25 MB |
1027 | for (i = 0; i < card->num_links; i++) { |
1028 | found = 0; | |
1029 | list_for_each_entry(dai, &dai_list, list) | |
1030 | if (card->dai_link[i].cpu_dai == dai) { | |
1031 | found = 1; | |
1032 | break; | |
1033 | } | |
1034 | if (!found) { | |
1035 | dev_dbg(card->dev, "DAI %s not registered\n", | |
1036 | card->dai_link[i].cpu_dai->name); | |
1037 | return; | |
1038 | } | |
6b05eda6 MB |
1039 | |
1040 | if (card->dai_link[i].cpu_dai->ac97_control) | |
1041 | ac97 = 1; | |
c5af3a2e MB |
1042 | } |
1043 | ||
02a06d30 BS |
1044 | for (i = 0; i < card->num_links; i++) { |
1045 | if (!card->dai_link[i].codec_dai->ops) | |
1046 | card->dai_link[i].codec_dai->ops = &null_dai_ops; | |
1047 | } | |
1048 | ||
6b05eda6 MB |
1049 | /* If we have AC97 in the system then don't wait for the |
1050 | * codec. This will need revisiting if we have to handle | |
1051 | * systems with mixed AC97 and non-AC97 parts. Only check for | |
1052 | * DAIs currently; we can't do this per link since some AC97 | |
1053 | * codecs have non-AC97 DAIs. | |
1054 | */ | |
1055 | if (!ac97) | |
1056 | for (i = 0; i < card->num_links; i++) { | |
1057 | found = 0; | |
1058 | list_for_each_entry(dai, &dai_list, list) | |
1059 | if (card->dai_link[i].codec_dai == dai) { | |
1060 | found = 1; | |
1061 | break; | |
1062 | } | |
1063 | if (!found) { | |
1064 | dev_dbg(card->dev, "DAI %s not registered\n", | |
1065 | card->dai_link[i].codec_dai->name); | |
1066 | return; | |
1067 | } | |
1068 | } | |
1069 | ||
435c5e25 MB |
1070 | /* Note that we do not current check for codec components */ |
1071 | ||
1072 | dev_dbg(card->dev, "All components present, instantiating\n"); | |
1073 | ||
1074 | /* Found everything, bring it up */ | |
96dd3622 MB |
1075 | card->pmdown_time = pmdown_time; |
1076 | ||
87506549 MB |
1077 | if (card->probe) { |
1078 | ret = card->probe(pdev); | |
3ff3f64b | 1079 | if (ret < 0) |
435c5e25 | 1080 | return; |
db2a4165 FM |
1081 | } |
1082 | ||
87506549 MB |
1083 | for (i = 0; i < card->num_links; i++) { |
1084 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
db2a4165 | 1085 | if (cpu_dai->probe) { |
bdb92876 | 1086 | ret = cpu_dai->probe(pdev, cpu_dai); |
3ff3f64b | 1087 | if (ret < 0) |
db2a4165 FM |
1088 | goto cpu_dai_err; |
1089 | } | |
1090 | } | |
1091 | ||
1092 | if (codec_dev->probe) { | |
1093 | ret = codec_dev->probe(pdev); | |
3ff3f64b | 1094 | if (ret < 0) |
db2a4165 FM |
1095 | goto cpu_dai_err; |
1096 | } | |
fe3e78e0 | 1097 | codec = card->codec; |
db2a4165 FM |
1098 | |
1099 | if (platform->probe) { | |
1100 | ret = platform->probe(pdev); | |
3ff3f64b | 1101 | if (ret < 0) |
db2a4165 FM |
1102 | goto platform_err; |
1103 | } | |
1104 | ||
1105 | /* DAPM stream work */ | |
6308419a | 1106 | INIT_DELAYED_WORK(&card->delayed_work, close_delayed_work); |
1301a964 | 1107 | #ifdef CONFIG_PM |
6ed25978 | 1108 | /* deferred resume work */ |
6308419a | 1109 | INIT_WORK(&card->deferred_resume_work, soc_resume_deferred); |
1301a964 | 1110 | #endif |
6ed25978 | 1111 | |
fe3e78e0 MB |
1112 | for (i = 0; i < card->num_links; i++) { |
1113 | if (card->dai_link[i].init) { | |
1114 | ret = card->dai_link[i].init(codec); | |
1115 | if (ret < 0) { | |
1116 | printk(KERN_ERR "asoc: failed to init %s\n", | |
1117 | card->dai_link[i].stream_name); | |
1118 | continue; | |
1119 | } | |
1120 | } | |
f7732053 | 1121 | if (card->dai_link[i].codec_dai->ac97_control) |
fe3e78e0 | 1122 | ac97 = 1; |
fe3e78e0 MB |
1123 | } |
1124 | ||
1125 | snprintf(codec->card->shortname, sizeof(codec->card->shortname), | |
1126 | "%s", card->name); | |
1127 | snprintf(codec->card->longname, sizeof(codec->card->longname), | |
1128 | "%s (%s)", card->name, codec->name); | |
1129 | ||
1130 | /* Make sure all DAPM widgets are instantiated */ | |
1131 | snd_soc_dapm_new_widgets(codec); | |
1132 | ||
1133 | ret = snd_card_register(codec->card); | |
1134 | if (ret < 0) { | |
1135 | printk(KERN_ERR "asoc: failed to register soundcard for %s\n", | |
1136 | codec->name); | |
1137 | goto card_err; | |
1138 | } | |
1139 | ||
1140 | mutex_lock(&codec->mutex); | |
1141 | #ifdef CONFIG_SND_SOC_AC97_BUS | |
1142 | /* Only instantiate AC97 if not already done by the adaptor | |
1143 | * for the generic AC97 subsystem. | |
1144 | */ | |
1145 | if (ac97 && strcmp(codec->name, "AC97") != 0) { | |
1146 | ret = soc_ac97_dev_register(codec); | |
1147 | if (ret < 0) { | |
1148 | printk(KERN_ERR "asoc: AC97 device register failed\n"); | |
1149 | snd_card_free(codec->card); | |
1150 | mutex_unlock(&codec->mutex); | |
1151 | goto card_err; | |
1152 | } | |
1153 | } | |
1154 | #endif | |
1155 | ||
1156 | ret = snd_soc_dapm_sys_add(card->socdev->dev); | |
1157 | if (ret < 0) | |
1158 | printk(KERN_WARNING "asoc: failed to add dapm sysfs entries\n"); | |
1159 | ||
dbe21408 MB |
1160 | ret = device_create_file(card->socdev->dev, &dev_attr_pmdown_time); |
1161 | if (ret < 0) | |
1162 | printk(KERN_WARNING "asoc: failed to add pmdown_time sysfs\n"); | |
1163 | ||
fe3e78e0 MB |
1164 | ret = device_create_file(card->socdev->dev, &dev_attr_codec_reg); |
1165 | if (ret < 0) | |
1166 | printk(KERN_WARNING "asoc: failed to add codec sysfs files\n"); | |
1167 | ||
1168 | soc_init_codec_debugfs(codec); | |
1169 | mutex_unlock(&codec->mutex); | |
1170 | ||
435c5e25 MB |
1171 | card->instantiated = 1; |
1172 | ||
1173 | return; | |
db2a4165 | 1174 | |
fe3e78e0 MB |
1175 | card_err: |
1176 | if (platform->remove) | |
1177 | platform->remove(pdev); | |
1178 | ||
db2a4165 FM |
1179 | platform_err: |
1180 | if (codec_dev->remove) | |
1181 | codec_dev->remove(pdev); | |
1182 | ||
1183 | cpu_dai_err: | |
18b9b3d9 | 1184 | for (i--; i >= 0; i--) { |
87506549 | 1185 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; |
db2a4165 | 1186 | if (cpu_dai->remove) |
bdb92876 | 1187 | cpu_dai->remove(pdev, cpu_dai); |
db2a4165 FM |
1188 | } |
1189 | ||
87506549 MB |
1190 | if (card->remove) |
1191 | card->remove(pdev); | |
435c5e25 | 1192 | } |
db2a4165 | 1193 | |
435c5e25 MB |
1194 | /* |
1195 | * Attempt to initialise any uninitalised cards. Must be called with | |
1196 | * client_mutex. | |
1197 | */ | |
1198 | static void snd_soc_instantiate_cards(void) | |
1199 | { | |
1200 | struct snd_soc_card *card; | |
1201 | list_for_each_entry(card, &card_list, list) | |
1202 | snd_soc_instantiate_card(card); | |
1203 | } | |
1204 | ||
1205 | /* probes a new socdev */ | |
1206 | static int soc_probe(struct platform_device *pdev) | |
1207 | { | |
1208 | int ret = 0; | |
1209 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
1210 | struct snd_soc_card *card = socdev->card; | |
1211 | ||
1212 | /* Bodge while we push things out of socdev */ | |
1213 | card->socdev = socdev; | |
1214 | ||
1215 | /* Bodge while we unpick instantiation */ | |
1216 | card->dev = &pdev->dev; | |
1217 | ret = snd_soc_register_card(card); | |
1218 | if (ret != 0) { | |
1219 | dev_err(&pdev->dev, "Failed to register card\n"); | |
1220 | return ret; | |
1221 | } | |
1222 | ||
1223 | return 0; | |
db2a4165 FM |
1224 | } |
1225 | ||
1226 | /* removes a socdev */ | |
1227 | static int soc_remove(struct platform_device *pdev) | |
1228 | { | |
1229 | int i; | |
1230 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
87506549 | 1231 | struct snd_soc_card *card = socdev->card; |
87689d56 | 1232 | struct snd_soc_platform *platform = card->platform; |
db2a4165 FM |
1233 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; |
1234 | ||
914dc182 MR |
1235 | if (!card->instantiated) |
1236 | return 0; | |
1237 | ||
6308419a | 1238 | run_delayed_work(&card->delayed_work); |
965ac42c | 1239 | |
db2a4165 FM |
1240 | if (platform->remove) |
1241 | platform->remove(pdev); | |
1242 | ||
1243 | if (codec_dev->remove) | |
1244 | codec_dev->remove(pdev); | |
1245 | ||
87506549 MB |
1246 | for (i = 0; i < card->num_links; i++) { |
1247 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
db2a4165 | 1248 | if (cpu_dai->remove) |
bdb92876 | 1249 | cpu_dai->remove(pdev, cpu_dai); |
db2a4165 FM |
1250 | } |
1251 | ||
87506549 MB |
1252 | if (card->remove) |
1253 | card->remove(pdev); | |
db2a4165 | 1254 | |
c5af3a2e MB |
1255 | snd_soc_unregister_card(card); |
1256 | ||
db2a4165 FM |
1257 | return 0; |
1258 | } | |
1259 | ||
416356fc | 1260 | static int soc_poweroff(struct device *dev) |
51737470 | 1261 | { |
416356fc | 1262 | struct platform_device *pdev = to_platform_device(dev); |
51737470 MB |
1263 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
1264 | struct snd_soc_card *card = socdev->card; | |
1265 | ||
1266 | if (!card->instantiated) | |
416356fc | 1267 | return 0; |
51737470 MB |
1268 | |
1269 | /* Flush out pmdown_time work - we actually do want to run it | |
1270 | * now, we're shutting down so no imminent restart. */ | |
1271 | run_delayed_work(&card->delayed_work); | |
1272 | ||
1273 | snd_soc_dapm_shutdown(socdev); | |
416356fc MB |
1274 | |
1275 | return 0; | |
51737470 MB |
1276 | } |
1277 | ||
47145210 | 1278 | static const struct dev_pm_ops soc_pm_ops = { |
416356fc MB |
1279 | .suspend = soc_suspend, |
1280 | .resume = soc_resume, | |
1281 | .poweroff = soc_poweroff, | |
1282 | }; | |
1283 | ||
db2a4165 FM |
1284 | /* ASoC platform driver */ |
1285 | static struct platform_driver soc_driver = { | |
1286 | .driver = { | |
1287 | .name = "soc-audio", | |
8b45a209 | 1288 | .owner = THIS_MODULE, |
416356fc | 1289 | .pm = &soc_pm_ops, |
db2a4165 FM |
1290 | }, |
1291 | .probe = soc_probe, | |
1292 | .remove = soc_remove, | |
db2a4165 FM |
1293 | }; |
1294 | ||
1295 | /* create a new pcm */ | |
1296 | static int soc_new_pcm(struct snd_soc_device *socdev, | |
1297 | struct snd_soc_dai_link *dai_link, int num) | |
1298 | { | |
87689d56 | 1299 | struct snd_soc_card *card = socdev->card; |
6627a653 | 1300 | struct snd_soc_codec *codec = card->codec; |
87689d56 | 1301 | struct snd_soc_platform *platform = card->platform; |
3c4b266f LG |
1302 | struct snd_soc_dai *codec_dai = dai_link->codec_dai; |
1303 | struct snd_soc_dai *cpu_dai = dai_link->cpu_dai; | |
db2a4165 FM |
1304 | struct snd_soc_pcm_runtime *rtd; |
1305 | struct snd_pcm *pcm; | |
1306 | char new_name[64]; | |
1307 | int ret = 0, playback = 0, capture = 0; | |
1308 | ||
1309 | rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime), GFP_KERNEL); | |
1310 | if (rtd == NULL) | |
1311 | return -ENOMEM; | |
cb666e5b LG |
1312 | |
1313 | rtd->dai = dai_link; | |
db2a4165 | 1314 | rtd->socdev = socdev; |
6627a653 | 1315 | codec_dai->codec = card->codec; |
db2a4165 FM |
1316 | |
1317 | /* check client and interface hw capabilities */ | |
40ca1142 MB |
1318 | snprintf(new_name, sizeof(new_name), "%s %s-%d", |
1319 | dai_link->stream_name, codec_dai->name, num); | |
db2a4165 FM |
1320 | |
1321 | if (codec_dai->playback.channels_min) | |
1322 | playback = 1; | |
1323 | if (codec_dai->capture.channels_min) | |
1324 | capture = 1; | |
1325 | ||
1326 | ret = snd_pcm_new(codec->card, new_name, codec->pcm_devs++, playback, | |
1327 | capture, &pcm); | |
1328 | if (ret < 0) { | |
3ff3f64b MB |
1329 | printk(KERN_ERR "asoc: can't create pcm for codec %s\n", |
1330 | codec->name); | |
db2a4165 FM |
1331 | kfree(rtd); |
1332 | return ret; | |
1333 | } | |
1334 | ||
4ccab3e7 | 1335 | dai_link->pcm = pcm; |
db2a4165 | 1336 | pcm->private_data = rtd; |
87689d56 MB |
1337 | soc_pcm_ops.mmap = platform->pcm_ops->mmap; |
1338 | soc_pcm_ops.pointer = platform->pcm_ops->pointer; | |
1339 | soc_pcm_ops.ioctl = platform->pcm_ops->ioctl; | |
1340 | soc_pcm_ops.copy = platform->pcm_ops->copy; | |
1341 | soc_pcm_ops.silence = platform->pcm_ops->silence; | |
1342 | soc_pcm_ops.ack = platform->pcm_ops->ack; | |
1343 | soc_pcm_ops.page = platform->pcm_ops->page; | |
db2a4165 FM |
1344 | |
1345 | if (playback) | |
1346 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &soc_pcm_ops); | |
1347 | ||
1348 | if (capture) | |
1349 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &soc_pcm_ops); | |
1350 | ||
87689d56 | 1351 | ret = platform->pcm_new(codec->card, codec_dai, pcm); |
db2a4165 FM |
1352 | if (ret < 0) { |
1353 | printk(KERN_ERR "asoc: platform pcm constructor failed\n"); | |
1354 | kfree(rtd); | |
1355 | return ret; | |
1356 | } | |
1357 | ||
87689d56 | 1358 | pcm->private_free = platform->pcm_free; |
db2a4165 FM |
1359 | printk(KERN_INFO "asoc: %s <-> %s mapping ok\n", codec_dai->name, |
1360 | cpu_dai->name); | |
1361 | return ret; | |
1362 | } | |
1363 | ||
096e49d5 MB |
1364 | /** |
1365 | * snd_soc_codec_volatile_register: Report if a register is volatile. | |
1366 | * | |
1367 | * @codec: CODEC to query. | |
1368 | * @reg: Register to query. | |
1369 | * | |
1370 | * Boolean function indiciating if a CODEC register is volatile. | |
1371 | */ | |
1372 | int snd_soc_codec_volatile_register(struct snd_soc_codec *codec, int reg) | |
1373 | { | |
1374 | if (codec->volatile_register) | |
1375 | return codec->volatile_register(reg); | |
1376 | else | |
1377 | return 0; | |
1378 | } | |
1379 | EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register); | |
1380 | ||
db2a4165 FM |
1381 | /** |
1382 | * snd_soc_new_ac97_codec - initailise AC97 device | |
1383 | * @codec: audio codec | |
1384 | * @ops: AC97 bus operations | |
1385 | * @num: AC97 codec number | |
1386 | * | |
1387 | * Initialises AC97 codec resources for use by ad-hoc devices only. | |
1388 | */ | |
1389 | int snd_soc_new_ac97_codec(struct snd_soc_codec *codec, | |
1390 | struct snd_ac97_bus_ops *ops, int num) | |
1391 | { | |
1392 | mutex_lock(&codec->mutex); | |
1393 | ||
1394 | codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL); | |
1395 | if (codec->ac97 == NULL) { | |
1396 | mutex_unlock(&codec->mutex); | |
1397 | return -ENOMEM; | |
1398 | } | |
1399 | ||
1400 | codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL); | |
1401 | if (codec->ac97->bus == NULL) { | |
1402 | kfree(codec->ac97); | |
1403 | codec->ac97 = NULL; | |
1404 | mutex_unlock(&codec->mutex); | |
1405 | return -ENOMEM; | |
1406 | } | |
1407 | ||
1408 | codec->ac97->bus->ops = ops; | |
1409 | codec->ac97->num = num; | |
2718625f | 1410 | codec->dev = &codec->ac97->dev; |
db2a4165 FM |
1411 | mutex_unlock(&codec->mutex); |
1412 | return 0; | |
1413 | } | |
1414 | EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec); | |
1415 | ||
1416 | /** | |
1417 | * snd_soc_free_ac97_codec - free AC97 codec device | |
1418 | * @codec: audio codec | |
1419 | * | |
1420 | * Frees AC97 codec device resources. | |
1421 | */ | |
1422 | void snd_soc_free_ac97_codec(struct snd_soc_codec *codec) | |
1423 | { | |
1424 | mutex_lock(&codec->mutex); | |
1425 | kfree(codec->ac97->bus); | |
1426 | kfree(codec->ac97); | |
1427 | codec->ac97 = NULL; | |
1428 | mutex_unlock(&codec->mutex); | |
1429 | } | |
1430 | EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec); | |
1431 | ||
1432 | /** | |
1433 | * snd_soc_update_bits - update codec register bits | |
1434 | * @codec: audio codec | |
1435 | * @reg: codec register | |
1436 | * @mask: register mask | |
1437 | * @value: new value | |
1438 | * | |
1439 | * Writes new register value. | |
1440 | * | |
1441 | * Returns 1 for change else 0. | |
1442 | */ | |
1443 | int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg, | |
46f5822f | 1444 | unsigned int mask, unsigned int value) |
db2a4165 FM |
1445 | { |
1446 | int change; | |
46f5822f | 1447 | unsigned int old, new; |
db2a4165 | 1448 | |
db2a4165 FM |
1449 | old = snd_soc_read(codec, reg); |
1450 | new = (old & ~mask) | value; | |
1451 | change = old != new; | |
1452 | if (change) | |
1453 | snd_soc_write(codec, reg, new); | |
1454 | ||
db2a4165 FM |
1455 | return change; |
1456 | } | |
1457 | EXPORT_SYMBOL_GPL(snd_soc_update_bits); | |
1458 | ||
6c508c62 EN |
1459 | /** |
1460 | * snd_soc_update_bits_locked - update codec register bits | |
1461 | * @codec: audio codec | |
1462 | * @reg: codec register | |
1463 | * @mask: register mask | |
1464 | * @value: new value | |
1465 | * | |
1466 | * Writes new register value, and takes the codec mutex. | |
1467 | * | |
1468 | * Returns 1 for change else 0. | |
1469 | */ | |
dd1b3d53 MB |
1470 | int snd_soc_update_bits_locked(struct snd_soc_codec *codec, |
1471 | unsigned short reg, unsigned int mask, | |
1472 | unsigned int value) | |
6c508c62 EN |
1473 | { |
1474 | int change; | |
1475 | ||
1476 | mutex_lock(&codec->mutex); | |
1477 | change = snd_soc_update_bits(codec, reg, mask, value); | |
1478 | mutex_unlock(&codec->mutex); | |
1479 | ||
1480 | return change; | |
1481 | } | |
dd1b3d53 | 1482 | EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked); |
6c508c62 | 1483 | |
db2a4165 FM |
1484 | /** |
1485 | * snd_soc_test_bits - test register for change | |
1486 | * @codec: audio codec | |
1487 | * @reg: codec register | |
1488 | * @mask: register mask | |
1489 | * @value: new value | |
1490 | * | |
1491 | * Tests a register with a new value and checks if the new value is | |
1492 | * different from the old value. | |
1493 | * | |
1494 | * Returns 1 for change else 0. | |
1495 | */ | |
1496 | int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg, | |
46f5822f | 1497 | unsigned int mask, unsigned int value) |
db2a4165 FM |
1498 | { |
1499 | int change; | |
46f5822f | 1500 | unsigned int old, new; |
db2a4165 | 1501 | |
db2a4165 FM |
1502 | old = snd_soc_read(codec, reg); |
1503 | new = (old & ~mask) | value; | |
1504 | change = old != new; | |
db2a4165 FM |
1505 | |
1506 | return change; | |
1507 | } | |
1508 | EXPORT_SYMBOL_GPL(snd_soc_test_bits); | |
1509 | ||
db2a4165 FM |
1510 | /** |
1511 | * snd_soc_new_pcms - create new sound card and pcms | |
1512 | * @socdev: the SoC audio device | |
ac11a2b3 MB |
1513 | * @idx: ALSA card index |
1514 | * @xid: card identification | |
db2a4165 FM |
1515 | * |
1516 | * Create a new sound card based upon the codec and interface pcms. | |
1517 | * | |
1518 | * Returns 0 for success, else error. | |
1519 | */ | |
bc7320c5 | 1520 | int snd_soc_new_pcms(struct snd_soc_device *socdev, int idx, const char *xid) |
db2a4165 | 1521 | { |
87506549 | 1522 | struct snd_soc_card *card = socdev->card; |
6627a653 | 1523 | struct snd_soc_codec *codec = card->codec; |
bd7dd77c | 1524 | int ret, i; |
db2a4165 FM |
1525 | |
1526 | mutex_lock(&codec->mutex); | |
1527 | ||
1528 | /* register a sound card */ | |
bd7dd77c TI |
1529 | ret = snd_card_create(idx, xid, codec->owner, 0, &codec->card); |
1530 | if (ret < 0) { | |
db2a4165 FM |
1531 | printk(KERN_ERR "asoc: can't create sound card for codec %s\n", |
1532 | codec->name); | |
1533 | mutex_unlock(&codec->mutex); | |
bd7dd77c | 1534 | return ret; |
db2a4165 FM |
1535 | } |
1536 | ||
452c5eaa | 1537 | codec->socdev = socdev; |
db2a4165 FM |
1538 | codec->card->dev = socdev->dev; |
1539 | codec->card->private_data = codec; | |
1540 | strncpy(codec->card->driver, codec->name, sizeof(codec->card->driver)); | |
1541 | ||
1542 | /* create the pcms */ | |
87506549 MB |
1543 | for (i = 0; i < card->num_links; i++) { |
1544 | ret = soc_new_pcm(socdev, &card->dai_link[i], i); | |
db2a4165 FM |
1545 | if (ret < 0) { |
1546 | printk(KERN_ERR "asoc: can't create pcm %s\n", | |
87506549 | 1547 | card->dai_link[i].stream_name); |
db2a4165 FM |
1548 | mutex_unlock(&codec->mutex); |
1549 | return ret; | |
1550 | } | |
f7732053 BS |
1551 | if (card->dai_link[i].codec_dai->ac97_control) { |
1552 | snd_ac97_dev_add_pdata(codec->ac97, | |
1553 | card->dai_link[i].cpu_dai->ac97_pdata); | |
1554 | } | |
db2a4165 FM |
1555 | } |
1556 | ||
1557 | mutex_unlock(&codec->mutex); | |
1558 | return ret; | |
1559 | } | |
1560 | EXPORT_SYMBOL_GPL(snd_soc_new_pcms); | |
1561 | ||
db2a4165 FM |
1562 | /** |
1563 | * snd_soc_free_pcms - free sound card and pcms | |
1564 | * @socdev: the SoC audio device | |
1565 | * | |
1566 | * Frees sound card and pcms associated with the socdev. | |
1567 | * Also unregister the codec if it is an AC97 device. | |
1568 | */ | |
1569 | void snd_soc_free_pcms(struct snd_soc_device *socdev) | |
1570 | { | |
6627a653 | 1571 | struct snd_soc_codec *codec = socdev->card->codec; |
a68660e0 | 1572 | #ifdef CONFIG_SND_SOC_AC97_BUS |
3c4b266f | 1573 | struct snd_soc_dai *codec_dai; |
a68660e0 LG |
1574 | int i; |
1575 | #endif | |
db2a4165 FM |
1576 | |
1577 | mutex_lock(&codec->mutex); | |
6627a653 | 1578 | soc_cleanup_codec_debugfs(codec); |
db2a4165 | 1579 | #ifdef CONFIG_SND_SOC_AC97_BUS |
3ff3f64b | 1580 | for (i = 0; i < codec->num_dai; i++) { |
a68660e0 | 1581 | codec_dai = &codec->dai[i]; |
d2314e0e AN |
1582 | if (codec_dai->ac97_control && codec->ac97 && |
1583 | strcmp(codec->name, "AC97") != 0) { | |
a68660e0 LG |
1584 | soc_ac97_dev_unregister(codec); |
1585 | goto free_card; | |
1586 | } | |
1587 | } | |
1588 | free_card: | |
db2a4165 FM |
1589 | #endif |
1590 | ||
1591 | if (codec->card) | |
1592 | snd_card_free(codec->card); | |
1593 | device_remove_file(socdev->dev, &dev_attr_codec_reg); | |
1594 | mutex_unlock(&codec->mutex); | |
1595 | } | |
1596 | EXPORT_SYMBOL_GPL(snd_soc_free_pcms); | |
1597 | ||
1598 | /** | |
1599 | * snd_soc_set_runtime_hwparams - set the runtime hardware parameters | |
1600 | * @substream: the pcm substream | |
1601 | * @hw: the hardware parameters | |
1602 | * | |
1603 | * Sets the substream runtime hardware parameters. | |
1604 | */ | |
1605 | int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream, | |
1606 | const struct snd_pcm_hardware *hw) | |
1607 | { | |
1608 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1609 | runtime->hw.info = hw->info; | |
1610 | runtime->hw.formats = hw->formats; | |
1611 | runtime->hw.period_bytes_min = hw->period_bytes_min; | |
1612 | runtime->hw.period_bytes_max = hw->period_bytes_max; | |
1613 | runtime->hw.periods_min = hw->periods_min; | |
1614 | runtime->hw.periods_max = hw->periods_max; | |
1615 | runtime->hw.buffer_bytes_max = hw->buffer_bytes_max; | |
1616 | runtime->hw.fifo_size = hw->fifo_size; | |
1617 | return 0; | |
1618 | } | |
1619 | EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams); | |
1620 | ||
1621 | /** | |
1622 | * snd_soc_cnew - create new control | |
1623 | * @_template: control template | |
1624 | * @data: control private data | |
ac11a2b3 | 1625 | * @long_name: control long name |
db2a4165 FM |
1626 | * |
1627 | * Create a new mixer control from a template control. | |
1628 | * | |
1629 | * Returns 0 for success, else error. | |
1630 | */ | |
1631 | struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template, | |
1632 | void *data, char *long_name) | |
1633 | { | |
1634 | struct snd_kcontrol_new template; | |
1635 | ||
1636 | memcpy(&template, _template, sizeof(template)); | |
1637 | if (long_name) | |
1638 | template.name = long_name; | |
db2a4165 FM |
1639 | template.index = 0; |
1640 | ||
1641 | return snd_ctl_new1(&template, data); | |
1642 | } | |
1643 | EXPORT_SYMBOL_GPL(snd_soc_cnew); | |
1644 | ||
3e8e1952 IM |
1645 | /** |
1646 | * snd_soc_add_controls - add an array of controls to a codec. | |
1647 | * Convienience function to add a list of controls. Many codecs were | |
1648 | * duplicating this code. | |
1649 | * | |
1650 | * @codec: codec to add controls to | |
1651 | * @controls: array of controls to add | |
1652 | * @num_controls: number of elements in the array | |
1653 | * | |
1654 | * Return 0 for success, else error. | |
1655 | */ | |
1656 | int snd_soc_add_controls(struct snd_soc_codec *codec, | |
1657 | const struct snd_kcontrol_new *controls, int num_controls) | |
1658 | { | |
1659 | struct snd_card *card = codec->card; | |
1660 | int err, i; | |
1661 | ||
1662 | for (i = 0; i < num_controls; i++) { | |
1663 | const struct snd_kcontrol_new *control = &controls[i]; | |
1664 | err = snd_ctl_add(card, snd_soc_cnew(control, codec, NULL)); | |
1665 | if (err < 0) { | |
1666 | dev_err(codec->dev, "%s: Failed to add %s\n", | |
1667 | codec->name, control->name); | |
1668 | return err; | |
1669 | } | |
1670 | } | |
1671 | ||
1672 | return 0; | |
1673 | } | |
1674 | EXPORT_SYMBOL_GPL(snd_soc_add_controls); | |
1675 | ||
db2a4165 FM |
1676 | /** |
1677 | * snd_soc_info_enum_double - enumerated double mixer info callback | |
1678 | * @kcontrol: mixer control | |
1679 | * @uinfo: control element information | |
1680 | * | |
1681 | * Callback to provide information about a double enumerated | |
1682 | * mixer control. | |
1683 | * | |
1684 | * Returns 0 for success. | |
1685 | */ | |
1686 | int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol, | |
1687 | struct snd_ctl_elem_info *uinfo) | |
1688 | { | |
1689 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1690 | ||
1691 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; | |
1692 | uinfo->count = e->shift_l == e->shift_r ? 1 : 2; | |
f8ba0b7b | 1693 | uinfo->value.enumerated.items = e->max; |
db2a4165 | 1694 | |
f8ba0b7b JS |
1695 | if (uinfo->value.enumerated.item > e->max - 1) |
1696 | uinfo->value.enumerated.item = e->max - 1; | |
db2a4165 FM |
1697 | strcpy(uinfo->value.enumerated.name, |
1698 | e->texts[uinfo->value.enumerated.item]); | |
1699 | return 0; | |
1700 | } | |
1701 | EXPORT_SYMBOL_GPL(snd_soc_info_enum_double); | |
1702 | ||
1703 | /** | |
1704 | * snd_soc_get_enum_double - enumerated double mixer get callback | |
1705 | * @kcontrol: mixer control | |
ac11a2b3 | 1706 | * @ucontrol: control element information |
db2a4165 FM |
1707 | * |
1708 | * Callback to get the value of a double enumerated mixer. | |
1709 | * | |
1710 | * Returns 0 for success. | |
1711 | */ | |
1712 | int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol, | |
1713 | struct snd_ctl_elem_value *ucontrol) | |
1714 | { | |
1715 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1716 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
46f5822f | 1717 | unsigned int val, bitmask; |
db2a4165 | 1718 | |
f8ba0b7b | 1719 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
db2a4165 FM |
1720 | ; |
1721 | val = snd_soc_read(codec, e->reg); | |
3ff3f64b MB |
1722 | ucontrol->value.enumerated.item[0] |
1723 | = (val >> e->shift_l) & (bitmask - 1); | |
db2a4165 FM |
1724 | if (e->shift_l != e->shift_r) |
1725 | ucontrol->value.enumerated.item[1] = | |
1726 | (val >> e->shift_r) & (bitmask - 1); | |
1727 | ||
1728 | return 0; | |
1729 | } | |
1730 | EXPORT_SYMBOL_GPL(snd_soc_get_enum_double); | |
1731 | ||
1732 | /** | |
1733 | * snd_soc_put_enum_double - enumerated double mixer put callback | |
1734 | * @kcontrol: mixer control | |
ac11a2b3 | 1735 | * @ucontrol: control element information |
db2a4165 FM |
1736 | * |
1737 | * Callback to set the value of a double enumerated mixer. | |
1738 | * | |
1739 | * Returns 0 for success. | |
1740 | */ | |
1741 | int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol, | |
1742 | struct snd_ctl_elem_value *ucontrol) | |
1743 | { | |
1744 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1745 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
46f5822f DR |
1746 | unsigned int val; |
1747 | unsigned int mask, bitmask; | |
db2a4165 | 1748 | |
f8ba0b7b | 1749 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
db2a4165 | 1750 | ; |
f8ba0b7b | 1751 | if (ucontrol->value.enumerated.item[0] > e->max - 1) |
db2a4165 FM |
1752 | return -EINVAL; |
1753 | val = ucontrol->value.enumerated.item[0] << e->shift_l; | |
1754 | mask = (bitmask - 1) << e->shift_l; | |
1755 | if (e->shift_l != e->shift_r) { | |
f8ba0b7b | 1756 | if (ucontrol->value.enumerated.item[1] > e->max - 1) |
db2a4165 FM |
1757 | return -EINVAL; |
1758 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
1759 | mask |= (bitmask - 1) << e->shift_r; | |
1760 | } | |
1761 | ||
6c508c62 | 1762 | return snd_soc_update_bits_locked(codec, e->reg, mask, val); |
db2a4165 FM |
1763 | } |
1764 | EXPORT_SYMBOL_GPL(snd_soc_put_enum_double); | |
1765 | ||
2e72f8e3 PU |
1766 | /** |
1767 | * snd_soc_get_value_enum_double - semi enumerated double mixer get callback | |
1768 | * @kcontrol: mixer control | |
1769 | * @ucontrol: control element information | |
1770 | * | |
1771 | * Callback to get the value of a double semi enumerated mixer. | |
1772 | * | |
1773 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
1774 | * used for handling bitfield coded enumeration for example. | |
1775 | * | |
1776 | * Returns 0 for success. | |
1777 | */ | |
1778 | int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol, | |
1779 | struct snd_ctl_elem_value *ucontrol) | |
1780 | { | |
1781 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
74155556 | 1782 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f | 1783 | unsigned int reg_val, val, mux; |
2e72f8e3 PU |
1784 | |
1785 | reg_val = snd_soc_read(codec, e->reg); | |
1786 | val = (reg_val >> e->shift_l) & e->mask; | |
1787 | for (mux = 0; mux < e->max; mux++) { | |
1788 | if (val == e->values[mux]) | |
1789 | break; | |
1790 | } | |
1791 | ucontrol->value.enumerated.item[0] = mux; | |
1792 | if (e->shift_l != e->shift_r) { | |
1793 | val = (reg_val >> e->shift_r) & e->mask; | |
1794 | for (mux = 0; mux < e->max; mux++) { | |
1795 | if (val == e->values[mux]) | |
1796 | break; | |
1797 | } | |
1798 | ucontrol->value.enumerated.item[1] = mux; | |
1799 | } | |
1800 | ||
1801 | return 0; | |
1802 | } | |
1803 | EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double); | |
1804 | ||
1805 | /** | |
1806 | * snd_soc_put_value_enum_double - semi enumerated double mixer put callback | |
1807 | * @kcontrol: mixer control | |
1808 | * @ucontrol: control element information | |
1809 | * | |
1810 | * Callback to set the value of a double semi enumerated mixer. | |
1811 | * | |
1812 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
1813 | * used for handling bitfield coded enumeration for example. | |
1814 | * | |
1815 | * Returns 0 for success. | |
1816 | */ | |
1817 | int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol, | |
1818 | struct snd_ctl_elem_value *ucontrol) | |
1819 | { | |
1820 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
74155556 | 1821 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f DR |
1822 | unsigned int val; |
1823 | unsigned int mask; | |
2e72f8e3 PU |
1824 | |
1825 | if (ucontrol->value.enumerated.item[0] > e->max - 1) | |
1826 | return -EINVAL; | |
1827 | val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l; | |
1828 | mask = e->mask << e->shift_l; | |
1829 | if (e->shift_l != e->shift_r) { | |
1830 | if (ucontrol->value.enumerated.item[1] > e->max - 1) | |
1831 | return -EINVAL; | |
1832 | val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r; | |
1833 | mask |= e->mask << e->shift_r; | |
1834 | } | |
1835 | ||
6c508c62 | 1836 | return snd_soc_update_bits_locked(codec, e->reg, mask, val); |
2e72f8e3 PU |
1837 | } |
1838 | EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double); | |
1839 | ||
db2a4165 FM |
1840 | /** |
1841 | * snd_soc_info_enum_ext - external enumerated single mixer info callback | |
1842 | * @kcontrol: mixer control | |
1843 | * @uinfo: control element information | |
1844 | * | |
1845 | * Callback to provide information about an external enumerated | |
1846 | * single mixer. | |
1847 | * | |
1848 | * Returns 0 for success. | |
1849 | */ | |
1850 | int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol, | |
1851 | struct snd_ctl_elem_info *uinfo) | |
1852 | { | |
1853 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1854 | ||
1855 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; | |
1856 | uinfo->count = 1; | |
f8ba0b7b | 1857 | uinfo->value.enumerated.items = e->max; |
db2a4165 | 1858 | |
f8ba0b7b JS |
1859 | if (uinfo->value.enumerated.item > e->max - 1) |
1860 | uinfo->value.enumerated.item = e->max - 1; | |
db2a4165 FM |
1861 | strcpy(uinfo->value.enumerated.name, |
1862 | e->texts[uinfo->value.enumerated.item]); | |
1863 | return 0; | |
1864 | } | |
1865 | EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext); | |
1866 | ||
1867 | /** | |
1868 | * snd_soc_info_volsw_ext - external single mixer info callback | |
1869 | * @kcontrol: mixer control | |
1870 | * @uinfo: control element information | |
1871 | * | |
1872 | * Callback to provide information about a single external mixer control. | |
1873 | * | |
1874 | * Returns 0 for success. | |
1875 | */ | |
1876 | int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol, | |
1877 | struct snd_ctl_elem_info *uinfo) | |
1878 | { | |
a7a4ac86 PZ |
1879 | int max = kcontrol->private_value; |
1880 | ||
fd5dfad9 | 1881 | if (max == 1 && !strstr(kcontrol->id.name, " Volume")) |
a7a4ac86 PZ |
1882 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; |
1883 | else | |
1884 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
db2a4165 | 1885 | |
db2a4165 FM |
1886 | uinfo->count = 1; |
1887 | uinfo->value.integer.min = 0; | |
a7a4ac86 | 1888 | uinfo->value.integer.max = max; |
db2a4165 FM |
1889 | return 0; |
1890 | } | |
1891 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext); | |
1892 | ||
db2a4165 FM |
1893 | /** |
1894 | * snd_soc_info_volsw - single mixer info callback | |
1895 | * @kcontrol: mixer control | |
1896 | * @uinfo: control element information | |
1897 | * | |
1898 | * Callback to provide information about a single mixer control. | |
1899 | * | |
1900 | * Returns 0 for success. | |
1901 | */ | |
1902 | int snd_soc_info_volsw(struct snd_kcontrol *kcontrol, | |
1903 | struct snd_ctl_elem_info *uinfo) | |
1904 | { | |
4eaa9819 JS |
1905 | struct soc_mixer_control *mc = |
1906 | (struct soc_mixer_control *)kcontrol->private_value; | |
1907 | int max = mc->max; | |
762b8df7 | 1908 | unsigned int shift = mc->shift; |
815ecf8d | 1909 | unsigned int rshift = mc->rshift; |
db2a4165 | 1910 | |
fd5dfad9 | 1911 | if (max == 1 && !strstr(kcontrol->id.name, " Volume")) |
a7a4ac86 PZ |
1912 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; |
1913 | else | |
1914 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
1915 | ||
db2a4165 FM |
1916 | uinfo->count = shift == rshift ? 1 : 2; |
1917 | uinfo->value.integer.min = 0; | |
a7a4ac86 | 1918 | uinfo->value.integer.max = max; |
db2a4165 FM |
1919 | return 0; |
1920 | } | |
1921 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw); | |
1922 | ||
1923 | /** | |
1924 | * snd_soc_get_volsw - single mixer get callback | |
1925 | * @kcontrol: mixer control | |
ac11a2b3 | 1926 | * @ucontrol: control element information |
db2a4165 FM |
1927 | * |
1928 | * Callback to get the value of a single mixer control. | |
1929 | * | |
1930 | * Returns 0 for success. | |
1931 | */ | |
1932 | int snd_soc_get_volsw(struct snd_kcontrol *kcontrol, | |
1933 | struct snd_ctl_elem_value *ucontrol) | |
1934 | { | |
4eaa9819 JS |
1935 | struct soc_mixer_control *mc = |
1936 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 1937 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
1938 | unsigned int reg = mc->reg; |
1939 | unsigned int shift = mc->shift; | |
1940 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1941 | int max = mc->max; |
815ecf8d JS |
1942 | unsigned int mask = (1 << fls(max)) - 1; |
1943 | unsigned int invert = mc->invert; | |
db2a4165 FM |
1944 | |
1945 | ucontrol->value.integer.value[0] = | |
1946 | (snd_soc_read(codec, reg) >> shift) & mask; | |
1947 | if (shift != rshift) | |
1948 | ucontrol->value.integer.value[1] = | |
1949 | (snd_soc_read(codec, reg) >> rshift) & mask; | |
1950 | if (invert) { | |
1951 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1952 | max - ucontrol->value.integer.value[0]; |
db2a4165 FM |
1953 | if (shift != rshift) |
1954 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 1955 | max - ucontrol->value.integer.value[1]; |
db2a4165 FM |
1956 | } |
1957 | ||
1958 | return 0; | |
1959 | } | |
1960 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw); | |
1961 | ||
1962 | /** | |
1963 | * snd_soc_put_volsw - single mixer put callback | |
1964 | * @kcontrol: mixer control | |
ac11a2b3 | 1965 | * @ucontrol: control element information |
db2a4165 FM |
1966 | * |
1967 | * Callback to set the value of a single mixer control. | |
1968 | * | |
1969 | * Returns 0 for success. | |
1970 | */ | |
1971 | int snd_soc_put_volsw(struct snd_kcontrol *kcontrol, | |
1972 | struct snd_ctl_elem_value *ucontrol) | |
1973 | { | |
4eaa9819 JS |
1974 | struct soc_mixer_control *mc = |
1975 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 1976 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
1977 | unsigned int reg = mc->reg; |
1978 | unsigned int shift = mc->shift; | |
1979 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1980 | int max = mc->max; |
815ecf8d JS |
1981 | unsigned int mask = (1 << fls(max)) - 1; |
1982 | unsigned int invert = mc->invert; | |
46f5822f | 1983 | unsigned int val, val2, val_mask; |
db2a4165 FM |
1984 | |
1985 | val = (ucontrol->value.integer.value[0] & mask); | |
1986 | if (invert) | |
a7a4ac86 | 1987 | val = max - val; |
db2a4165 FM |
1988 | val_mask = mask << shift; |
1989 | val = val << shift; | |
1990 | if (shift != rshift) { | |
1991 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1992 | if (invert) | |
a7a4ac86 | 1993 | val2 = max - val2; |
db2a4165 FM |
1994 | val_mask |= mask << rshift; |
1995 | val |= val2 << rshift; | |
1996 | } | |
6c508c62 | 1997 | return snd_soc_update_bits_locked(codec, reg, val_mask, val); |
db2a4165 FM |
1998 | } |
1999 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw); | |
2000 | ||
2001 | /** | |
2002 | * snd_soc_info_volsw_2r - double mixer info callback | |
2003 | * @kcontrol: mixer control | |
2004 | * @uinfo: control element information | |
2005 | * | |
2006 | * Callback to provide information about a double mixer control that | |
2007 | * spans 2 codec registers. | |
2008 | * | |
2009 | * Returns 0 for success. | |
2010 | */ | |
2011 | int snd_soc_info_volsw_2r(struct snd_kcontrol *kcontrol, | |
2012 | struct snd_ctl_elem_info *uinfo) | |
2013 | { | |
4eaa9819 JS |
2014 | struct soc_mixer_control *mc = |
2015 | (struct soc_mixer_control *)kcontrol->private_value; | |
2016 | int max = mc->max; | |
a7a4ac86 | 2017 | |
fd5dfad9 | 2018 | if (max == 1 && !strstr(kcontrol->id.name, " Volume")) |
a7a4ac86 PZ |
2019 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; |
2020 | else | |
2021 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
db2a4165 | 2022 | |
db2a4165 FM |
2023 | uinfo->count = 2; |
2024 | uinfo->value.integer.min = 0; | |
a7a4ac86 | 2025 | uinfo->value.integer.max = max; |
db2a4165 FM |
2026 | return 0; |
2027 | } | |
2028 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r); | |
2029 | ||
2030 | /** | |
2031 | * snd_soc_get_volsw_2r - double mixer get callback | |
2032 | * @kcontrol: mixer control | |
ac11a2b3 | 2033 | * @ucontrol: control element information |
db2a4165 FM |
2034 | * |
2035 | * Callback to get the value of a double mixer control that spans 2 registers. | |
2036 | * | |
2037 | * Returns 0 for success. | |
2038 | */ | |
2039 | int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol, | |
2040 | struct snd_ctl_elem_value *ucontrol) | |
2041 | { | |
4eaa9819 JS |
2042 | struct soc_mixer_control *mc = |
2043 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 2044 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
2045 | unsigned int reg = mc->reg; |
2046 | unsigned int reg2 = mc->rreg; | |
2047 | unsigned int shift = mc->shift; | |
4eaa9819 | 2048 | int max = mc->max; |
46f5822f | 2049 | unsigned int mask = (1 << fls(max)) - 1; |
815ecf8d | 2050 | unsigned int invert = mc->invert; |
db2a4165 FM |
2051 | |
2052 | ucontrol->value.integer.value[0] = | |
2053 | (snd_soc_read(codec, reg) >> shift) & mask; | |
2054 | ucontrol->value.integer.value[1] = | |
2055 | (snd_soc_read(codec, reg2) >> shift) & mask; | |
2056 | if (invert) { | |
2057 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 2058 | max - ucontrol->value.integer.value[0]; |
db2a4165 | 2059 | ucontrol->value.integer.value[1] = |
a7a4ac86 | 2060 | max - ucontrol->value.integer.value[1]; |
db2a4165 FM |
2061 | } |
2062 | ||
2063 | return 0; | |
2064 | } | |
2065 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r); | |
2066 | ||
2067 | /** | |
2068 | * snd_soc_put_volsw_2r - double mixer set callback | |
2069 | * @kcontrol: mixer control | |
ac11a2b3 | 2070 | * @ucontrol: control element information |
db2a4165 FM |
2071 | * |
2072 | * Callback to set the value of a double mixer control that spans 2 registers. | |
2073 | * | |
2074 | * Returns 0 for success. | |
2075 | */ | |
2076 | int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol, | |
2077 | struct snd_ctl_elem_value *ucontrol) | |
2078 | { | |
4eaa9819 JS |
2079 | struct soc_mixer_control *mc = |
2080 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 2081 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
2082 | unsigned int reg = mc->reg; |
2083 | unsigned int reg2 = mc->rreg; | |
2084 | unsigned int shift = mc->shift; | |
4eaa9819 | 2085 | int max = mc->max; |
815ecf8d JS |
2086 | unsigned int mask = (1 << fls(max)) - 1; |
2087 | unsigned int invert = mc->invert; | |
db2a4165 | 2088 | int err; |
46f5822f | 2089 | unsigned int val, val2, val_mask; |
db2a4165 FM |
2090 | |
2091 | val_mask = mask << shift; | |
2092 | val = (ucontrol->value.integer.value[0] & mask); | |
2093 | val2 = (ucontrol->value.integer.value[1] & mask); | |
2094 | ||
2095 | if (invert) { | |
a7a4ac86 PZ |
2096 | val = max - val; |
2097 | val2 = max - val2; | |
db2a4165 FM |
2098 | } |
2099 | ||
2100 | val = val << shift; | |
2101 | val2 = val2 << shift; | |
2102 | ||
6c508c62 | 2103 | err = snd_soc_update_bits_locked(codec, reg, val_mask, val); |
3ff3f64b | 2104 | if (err < 0) |
db2a4165 FM |
2105 | return err; |
2106 | ||
6c508c62 | 2107 | err = snd_soc_update_bits_locked(codec, reg2, val_mask, val2); |
db2a4165 FM |
2108 | return err; |
2109 | } | |
2110 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r); | |
2111 | ||
e13ac2e9 MB |
2112 | /** |
2113 | * snd_soc_info_volsw_s8 - signed mixer info callback | |
2114 | * @kcontrol: mixer control | |
2115 | * @uinfo: control element information | |
2116 | * | |
2117 | * Callback to provide information about a signed mixer control. | |
2118 | * | |
2119 | * Returns 0 for success. | |
2120 | */ | |
2121 | int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol, | |
2122 | struct snd_ctl_elem_info *uinfo) | |
2123 | { | |
4eaa9819 JS |
2124 | struct soc_mixer_control *mc = |
2125 | (struct soc_mixer_control *)kcontrol->private_value; | |
2126 | int max = mc->max; | |
2127 | int min = mc->min; | |
e13ac2e9 MB |
2128 | |
2129 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
2130 | uinfo->count = 2; | |
2131 | uinfo->value.integer.min = 0; | |
2132 | uinfo->value.integer.max = max-min; | |
2133 | return 0; | |
2134 | } | |
2135 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8); | |
2136 | ||
2137 | /** | |
2138 | * snd_soc_get_volsw_s8 - signed mixer get callback | |
2139 | * @kcontrol: mixer control | |
ac11a2b3 | 2140 | * @ucontrol: control element information |
e13ac2e9 MB |
2141 | * |
2142 | * Callback to get the value of a signed mixer control. | |
2143 | * | |
2144 | * Returns 0 for success. | |
2145 | */ | |
2146 | int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol, | |
2147 | struct snd_ctl_elem_value *ucontrol) | |
2148 | { | |
4eaa9819 JS |
2149 | struct soc_mixer_control *mc = |
2150 | (struct soc_mixer_control *)kcontrol->private_value; | |
e13ac2e9 | 2151 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d | 2152 | unsigned int reg = mc->reg; |
4eaa9819 | 2153 | int min = mc->min; |
e13ac2e9 MB |
2154 | int val = snd_soc_read(codec, reg); |
2155 | ||
2156 | ucontrol->value.integer.value[0] = | |
2157 | ((signed char)(val & 0xff))-min; | |
2158 | ucontrol->value.integer.value[1] = | |
2159 | ((signed char)((val >> 8) & 0xff))-min; | |
2160 | return 0; | |
2161 | } | |
2162 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8); | |
2163 | ||
2164 | /** | |
2165 | * snd_soc_put_volsw_sgn - signed mixer put callback | |
2166 | * @kcontrol: mixer control | |
ac11a2b3 | 2167 | * @ucontrol: control element information |
e13ac2e9 MB |
2168 | * |
2169 | * Callback to set the value of a signed mixer control. | |
2170 | * | |
2171 | * Returns 0 for success. | |
2172 | */ | |
2173 | int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol, | |
2174 | struct snd_ctl_elem_value *ucontrol) | |
2175 | { | |
4eaa9819 JS |
2176 | struct soc_mixer_control *mc = |
2177 | (struct soc_mixer_control *)kcontrol->private_value; | |
e13ac2e9 | 2178 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d | 2179 | unsigned int reg = mc->reg; |
4eaa9819 | 2180 | int min = mc->min; |
46f5822f | 2181 | unsigned int val; |
e13ac2e9 MB |
2182 | |
2183 | val = (ucontrol->value.integer.value[0]+min) & 0xff; | |
2184 | val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8; | |
2185 | ||
6c508c62 | 2186 | return snd_soc_update_bits_locked(codec, reg, 0xffff, val); |
e13ac2e9 MB |
2187 | } |
2188 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8); | |
2189 | ||
8c6529db LG |
2190 | /** |
2191 | * snd_soc_dai_set_sysclk - configure DAI system or master clock. | |
2192 | * @dai: DAI | |
2193 | * @clk_id: DAI specific clock ID | |
2194 | * @freq: new clock frequency in Hz | |
2195 | * @dir: new clock direction - input/output. | |
2196 | * | |
2197 | * Configures the DAI master (MCLK) or system (SYSCLK) clocking. | |
2198 | */ | |
2199 | int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id, | |
2200 | unsigned int freq, int dir) | |
2201 | { | |
3f1a4d82 | 2202 | if (dai->ops && dai->ops->set_sysclk) |
6335d055 | 2203 | return dai->ops->set_sysclk(dai, clk_id, freq, dir); |
8c6529db LG |
2204 | else |
2205 | return -EINVAL; | |
2206 | } | |
2207 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk); | |
2208 | ||
2209 | /** | |
2210 | * snd_soc_dai_set_clkdiv - configure DAI clock dividers. | |
2211 | * @dai: DAI | |
ac11a2b3 | 2212 | * @div_id: DAI specific clock divider ID |
8c6529db LG |
2213 | * @div: new clock divisor. |
2214 | * | |
2215 | * Configures the clock dividers. This is used to derive the best DAI bit and | |
2216 | * frame clocks from the system or master clock. It's best to set the DAI bit | |
2217 | * and frame clocks as low as possible to save system power. | |
2218 | */ | |
2219 | int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai, | |
2220 | int div_id, int div) | |
2221 | { | |
3f1a4d82 | 2222 | if (dai->ops && dai->ops->set_clkdiv) |
6335d055 | 2223 | return dai->ops->set_clkdiv(dai, div_id, div); |
8c6529db LG |
2224 | else |
2225 | return -EINVAL; | |
2226 | } | |
2227 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv); | |
2228 | ||
2229 | /** | |
2230 | * snd_soc_dai_set_pll - configure DAI PLL. | |
2231 | * @dai: DAI | |
2232 | * @pll_id: DAI specific PLL ID | |
85488037 | 2233 | * @source: DAI specific source for the PLL |
8c6529db LG |
2234 | * @freq_in: PLL input clock frequency in Hz |
2235 | * @freq_out: requested PLL output clock frequency in Hz | |
2236 | * | |
2237 | * Configures and enables PLL to generate output clock based on input clock. | |
2238 | */ | |
85488037 MB |
2239 | int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source, |
2240 | unsigned int freq_in, unsigned int freq_out) | |
8c6529db | 2241 | { |
3f1a4d82 | 2242 | if (dai->ops && dai->ops->set_pll) |
85488037 MB |
2243 | return dai->ops->set_pll(dai, pll_id, source, |
2244 | freq_in, freq_out); | |
8c6529db LG |
2245 | else |
2246 | return -EINVAL; | |
2247 | } | |
2248 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll); | |
2249 | ||
2250 | /** | |
2251 | * snd_soc_dai_set_fmt - configure DAI hardware audio format. | |
2252 | * @dai: DAI | |
8c6529db LG |
2253 | * @fmt: SND_SOC_DAIFMT_ format value. |
2254 | * | |
2255 | * Configures the DAI hardware format and clocking. | |
2256 | */ | |
2257 | int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) | |
2258 | { | |
3f1a4d82 | 2259 | if (dai->ops && dai->ops->set_fmt) |
6335d055 | 2260 | return dai->ops->set_fmt(dai, fmt); |
8c6529db LG |
2261 | else |
2262 | return -EINVAL; | |
2263 | } | |
2264 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt); | |
2265 | ||
2266 | /** | |
2267 | * snd_soc_dai_set_tdm_slot - configure DAI TDM. | |
2268 | * @dai: DAI | |
a5479e38 DR |
2269 | * @tx_mask: bitmask representing active TX slots. |
2270 | * @rx_mask: bitmask representing active RX slots. | |
8c6529db | 2271 | * @slots: Number of slots in use. |
a5479e38 | 2272 | * @slot_width: Width in bits for each slot. |
8c6529db LG |
2273 | * |
2274 | * Configures a DAI for TDM operation. Both mask and slots are codec and DAI | |
2275 | * specific. | |
2276 | */ | |
2277 | int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai, | |
a5479e38 | 2278 | unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width) |
8c6529db | 2279 | { |
3f1a4d82 | 2280 | if (dai->ops && dai->ops->set_tdm_slot) |
a5479e38 DR |
2281 | return dai->ops->set_tdm_slot(dai, tx_mask, rx_mask, |
2282 | slots, slot_width); | |
8c6529db LG |
2283 | else |
2284 | return -EINVAL; | |
2285 | } | |
2286 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot); | |
2287 | ||
472df3cb BS |
2288 | /** |
2289 | * snd_soc_dai_set_channel_map - configure DAI audio channel map | |
2290 | * @dai: DAI | |
2291 | * @tx_num: how many TX channels | |
2292 | * @tx_slot: pointer to an array which imply the TX slot number channel | |
2293 | * 0~num-1 uses | |
2294 | * @rx_num: how many RX channels | |
2295 | * @rx_slot: pointer to an array which imply the RX slot number channel | |
2296 | * 0~num-1 uses | |
2297 | * | |
2298 | * configure the relationship between channel number and TDM slot number. | |
2299 | */ | |
2300 | int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai, | |
2301 | unsigned int tx_num, unsigned int *tx_slot, | |
2302 | unsigned int rx_num, unsigned int *rx_slot) | |
2303 | { | |
2304 | if (dai->ops && dai->ops->set_channel_map) | |
2305 | return dai->ops->set_channel_map(dai, tx_num, tx_slot, | |
2306 | rx_num, rx_slot); | |
2307 | else | |
2308 | return -EINVAL; | |
2309 | } | |
2310 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map); | |
2311 | ||
8c6529db LG |
2312 | /** |
2313 | * snd_soc_dai_set_tristate - configure DAI system or master clock. | |
2314 | * @dai: DAI | |
2315 | * @tristate: tristate enable | |
2316 | * | |
2317 | * Tristates the DAI so that others can use it. | |
2318 | */ | |
2319 | int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate) | |
2320 | { | |
3f1a4d82 | 2321 | if (dai->ops && dai->ops->set_tristate) |
6335d055 | 2322 | return dai->ops->set_tristate(dai, tristate); |
8c6529db LG |
2323 | else |
2324 | return -EINVAL; | |
2325 | } | |
2326 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate); | |
2327 | ||
2328 | /** | |
2329 | * snd_soc_dai_digital_mute - configure DAI system or master clock. | |
2330 | * @dai: DAI | |
2331 | * @mute: mute enable | |
2332 | * | |
2333 | * Mutes the DAI DAC. | |
2334 | */ | |
2335 | int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute) | |
2336 | { | |
3f1a4d82 | 2337 | if (dai->ops && dai->ops->digital_mute) |
6335d055 | 2338 | return dai->ops->digital_mute(dai, mute); |
8c6529db LG |
2339 | else |
2340 | return -EINVAL; | |
2341 | } | |
2342 | EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute); | |
2343 | ||
c5af3a2e MB |
2344 | /** |
2345 | * snd_soc_register_card - Register a card with the ASoC core | |
2346 | * | |
ac11a2b3 | 2347 | * @card: Card to register |
c5af3a2e MB |
2348 | * |
2349 | * Note that currently this is an internal only function: it will be | |
2350 | * exposed to machine drivers after further backporting of ASoC v2 | |
2351 | * registration APIs. | |
2352 | */ | |
2353 | static int snd_soc_register_card(struct snd_soc_card *card) | |
2354 | { | |
2355 | if (!card->name || !card->dev) | |
2356 | return -EINVAL; | |
2357 | ||
2358 | INIT_LIST_HEAD(&card->list); | |
2359 | card->instantiated = 0; | |
2360 | ||
2361 | mutex_lock(&client_mutex); | |
2362 | list_add(&card->list, &card_list); | |
435c5e25 | 2363 | snd_soc_instantiate_cards(); |
c5af3a2e MB |
2364 | mutex_unlock(&client_mutex); |
2365 | ||
2366 | dev_dbg(card->dev, "Registered card '%s'\n", card->name); | |
2367 | ||
2368 | return 0; | |
2369 | } | |
2370 | ||
2371 | /** | |
2372 | * snd_soc_unregister_card - Unregister a card with the ASoC core | |
2373 | * | |
ac11a2b3 | 2374 | * @card: Card to unregister |
c5af3a2e MB |
2375 | * |
2376 | * Note that currently this is an internal only function: it will be | |
2377 | * exposed to machine drivers after further backporting of ASoC v2 | |
2378 | * registration APIs. | |
2379 | */ | |
2380 | static int snd_soc_unregister_card(struct snd_soc_card *card) | |
2381 | { | |
2382 | mutex_lock(&client_mutex); | |
2383 | list_del(&card->list); | |
2384 | mutex_unlock(&client_mutex); | |
2385 | ||
2386 | dev_dbg(card->dev, "Unregistered card '%s'\n", card->name); | |
2387 | ||
2388 | return 0; | |
2389 | } | |
2390 | ||
9115171a MB |
2391 | /** |
2392 | * snd_soc_register_dai - Register a DAI with the ASoC core | |
2393 | * | |
ac11a2b3 | 2394 | * @dai: DAI to register |
9115171a MB |
2395 | */ |
2396 | int snd_soc_register_dai(struct snd_soc_dai *dai) | |
2397 | { | |
2398 | if (!dai->name) | |
2399 | return -EINVAL; | |
2400 | ||
2401 | /* The device should become mandatory over time */ | |
2402 | if (!dai->dev) | |
2403 | printk(KERN_WARNING "No device for DAI %s\n", dai->name); | |
2404 | ||
6335d055 EM |
2405 | if (!dai->ops) |
2406 | dai->ops = &null_dai_ops; | |
2407 | ||
9115171a MB |
2408 | INIT_LIST_HEAD(&dai->list); |
2409 | ||
2410 | mutex_lock(&client_mutex); | |
2411 | list_add(&dai->list, &dai_list); | |
435c5e25 | 2412 | snd_soc_instantiate_cards(); |
9115171a MB |
2413 | mutex_unlock(&client_mutex); |
2414 | ||
2415 | pr_debug("Registered DAI '%s'\n", dai->name); | |
2416 | ||
2417 | return 0; | |
2418 | } | |
2419 | EXPORT_SYMBOL_GPL(snd_soc_register_dai); | |
2420 | ||
2421 | /** | |
2422 | * snd_soc_unregister_dai - Unregister a DAI from the ASoC core | |
2423 | * | |
ac11a2b3 | 2424 | * @dai: DAI to unregister |
9115171a MB |
2425 | */ |
2426 | void snd_soc_unregister_dai(struct snd_soc_dai *dai) | |
2427 | { | |
2428 | mutex_lock(&client_mutex); | |
2429 | list_del(&dai->list); | |
2430 | mutex_unlock(&client_mutex); | |
2431 | ||
2432 | pr_debug("Unregistered DAI '%s'\n", dai->name); | |
2433 | } | |
2434 | EXPORT_SYMBOL_GPL(snd_soc_unregister_dai); | |
2435 | ||
2436 | /** | |
2437 | * snd_soc_register_dais - Register multiple DAIs with the ASoC core | |
2438 | * | |
ac11a2b3 MB |
2439 | * @dai: Array of DAIs to register |
2440 | * @count: Number of DAIs | |
9115171a MB |
2441 | */ |
2442 | int snd_soc_register_dais(struct snd_soc_dai *dai, size_t count) | |
2443 | { | |
2444 | int i, ret; | |
2445 | ||
2446 | for (i = 0; i < count; i++) { | |
2447 | ret = snd_soc_register_dai(&dai[i]); | |
2448 | if (ret != 0) | |
2449 | goto err; | |
2450 | } | |
2451 | ||
2452 | return 0; | |
2453 | ||
2454 | err: | |
2455 | for (i--; i >= 0; i--) | |
2456 | snd_soc_unregister_dai(&dai[i]); | |
2457 | ||
2458 | return ret; | |
2459 | } | |
2460 | EXPORT_SYMBOL_GPL(snd_soc_register_dais); | |
2461 | ||
2462 | /** | |
2463 | * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core | |
2464 | * | |
ac11a2b3 MB |
2465 | * @dai: Array of DAIs to unregister |
2466 | * @count: Number of DAIs | |
9115171a MB |
2467 | */ |
2468 | void snd_soc_unregister_dais(struct snd_soc_dai *dai, size_t count) | |
2469 | { | |
2470 | int i; | |
2471 | ||
2472 | for (i = 0; i < count; i++) | |
2473 | snd_soc_unregister_dai(&dai[i]); | |
2474 | } | |
2475 | EXPORT_SYMBOL_GPL(snd_soc_unregister_dais); | |
2476 | ||
12a48a8c MB |
2477 | /** |
2478 | * snd_soc_register_platform - Register a platform with the ASoC core | |
2479 | * | |
ac11a2b3 | 2480 | * @platform: platform to register |
12a48a8c MB |
2481 | */ |
2482 | int snd_soc_register_platform(struct snd_soc_platform *platform) | |
2483 | { | |
2484 | if (!platform->name) | |
2485 | return -EINVAL; | |
2486 | ||
2487 | INIT_LIST_HEAD(&platform->list); | |
2488 | ||
2489 | mutex_lock(&client_mutex); | |
2490 | list_add(&platform->list, &platform_list); | |
435c5e25 | 2491 | snd_soc_instantiate_cards(); |
12a48a8c MB |
2492 | mutex_unlock(&client_mutex); |
2493 | ||
2494 | pr_debug("Registered platform '%s'\n", platform->name); | |
2495 | ||
2496 | return 0; | |
2497 | } | |
2498 | EXPORT_SYMBOL_GPL(snd_soc_register_platform); | |
2499 | ||
2500 | /** | |
2501 | * snd_soc_unregister_platform - Unregister a platform from the ASoC core | |
2502 | * | |
ac11a2b3 | 2503 | * @platform: platform to unregister |
12a48a8c MB |
2504 | */ |
2505 | void snd_soc_unregister_platform(struct snd_soc_platform *platform) | |
2506 | { | |
2507 | mutex_lock(&client_mutex); | |
2508 | list_del(&platform->list); | |
2509 | mutex_unlock(&client_mutex); | |
2510 | ||
2511 | pr_debug("Unregistered platform '%s'\n", platform->name); | |
2512 | } | |
2513 | EXPORT_SYMBOL_GPL(snd_soc_unregister_platform); | |
2514 | ||
151ab22c MB |
2515 | static u64 codec_format_map[] = { |
2516 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE, | |
2517 | SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE, | |
2518 | SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE, | |
2519 | SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_U24_BE, | |
2520 | SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE, | |
2521 | SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_U32_BE, | |
2522 | SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_U24_3BE, | |
2523 | SNDRV_PCM_FMTBIT_U24_3LE | SNDRV_PCM_FMTBIT_U24_3BE, | |
2524 | SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE, | |
2525 | SNDRV_PCM_FMTBIT_U20_3LE | SNDRV_PCM_FMTBIT_U20_3BE, | |
2526 | SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE, | |
2527 | SNDRV_PCM_FMTBIT_U18_3LE | SNDRV_PCM_FMTBIT_U18_3BE, | |
2528 | SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE, | |
2529 | SNDRV_PCM_FMTBIT_FLOAT64_LE | SNDRV_PCM_FMTBIT_FLOAT64_BE, | |
2530 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE | |
2531 | | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE, | |
2532 | }; | |
2533 | ||
2534 | /* Fix up the DAI formats for endianness: codecs don't actually see | |
2535 | * the endianness of the data but we're using the CPU format | |
2536 | * definitions which do need to include endianness so we ensure that | |
2537 | * codec DAIs always have both big and little endian variants set. | |
2538 | */ | |
2539 | static void fixup_codec_formats(struct snd_soc_pcm_stream *stream) | |
2540 | { | |
2541 | int i; | |
2542 | ||
2543 | for (i = 0; i < ARRAY_SIZE(codec_format_map); i++) | |
2544 | if (stream->formats & codec_format_map[i]) | |
2545 | stream->formats |= codec_format_map[i]; | |
2546 | } | |
2547 | ||
0d0cf00a MB |
2548 | /** |
2549 | * snd_soc_register_codec - Register a codec with the ASoC core | |
2550 | * | |
ac11a2b3 | 2551 | * @codec: codec to register |
0d0cf00a MB |
2552 | */ |
2553 | int snd_soc_register_codec(struct snd_soc_codec *codec) | |
2554 | { | |
151ab22c MB |
2555 | int i; |
2556 | ||
0d0cf00a MB |
2557 | if (!codec->name) |
2558 | return -EINVAL; | |
2559 | ||
2560 | /* The device should become mandatory over time */ | |
2561 | if (!codec->dev) | |
2562 | printk(KERN_WARNING "No device for codec %s\n", codec->name); | |
2563 | ||
2564 | INIT_LIST_HEAD(&codec->list); | |
2565 | ||
151ab22c MB |
2566 | for (i = 0; i < codec->num_dai; i++) { |
2567 | fixup_codec_formats(&codec->dai[i].playback); | |
2568 | fixup_codec_formats(&codec->dai[i].capture); | |
2569 | } | |
2570 | ||
0d0cf00a MB |
2571 | mutex_lock(&client_mutex); |
2572 | list_add(&codec->list, &codec_list); | |
2573 | snd_soc_instantiate_cards(); | |
2574 | mutex_unlock(&client_mutex); | |
2575 | ||
2576 | pr_debug("Registered codec '%s'\n", codec->name); | |
2577 | ||
2578 | return 0; | |
2579 | } | |
2580 | EXPORT_SYMBOL_GPL(snd_soc_register_codec); | |
2581 | ||
2582 | /** | |
2583 | * snd_soc_unregister_codec - Unregister a codec from the ASoC core | |
2584 | * | |
ac11a2b3 | 2585 | * @codec: codec to unregister |
0d0cf00a MB |
2586 | */ |
2587 | void snd_soc_unregister_codec(struct snd_soc_codec *codec) | |
2588 | { | |
2589 | mutex_lock(&client_mutex); | |
2590 | list_del(&codec->list); | |
2591 | mutex_unlock(&client_mutex); | |
2592 | ||
2593 | pr_debug("Unregistered codec '%s'\n", codec->name); | |
2594 | } | |
2595 | EXPORT_SYMBOL_GPL(snd_soc_unregister_codec); | |
2596 | ||
c9b3a40f | 2597 | static int __init snd_soc_init(void) |
db2a4165 | 2598 | { |
384c89e2 MB |
2599 | #ifdef CONFIG_DEBUG_FS |
2600 | debugfs_root = debugfs_create_dir("asoc", NULL); | |
2601 | if (IS_ERR(debugfs_root) || !debugfs_root) { | |
2602 | printk(KERN_WARNING | |
2603 | "ASoC: Failed to create debugfs directory\n"); | |
2604 | debugfs_root = NULL; | |
2605 | } | |
2606 | #endif | |
2607 | ||
db2a4165 FM |
2608 | return platform_driver_register(&soc_driver); |
2609 | } | |
2610 | ||
7d8c16a6 | 2611 | static void __exit snd_soc_exit(void) |
db2a4165 | 2612 | { |
384c89e2 MB |
2613 | #ifdef CONFIG_DEBUG_FS |
2614 | debugfs_remove_recursive(debugfs_root); | |
2615 | #endif | |
3ff3f64b | 2616 | platform_driver_unregister(&soc_driver); |
db2a4165 FM |
2617 | } |
2618 | ||
2619 | module_init(snd_soc_init); | |
2620 | module_exit(snd_soc_exit); | |
2621 | ||
2622 | /* Module information */ | |
d331124d | 2623 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
db2a4165 FM |
2624 | MODULE_DESCRIPTION("ALSA SoC Core"); |
2625 | MODULE_LICENSE("GPL"); | |
8b45a209 | 2626 | MODULE_ALIAS("platform:soc-audio"); |