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> |
5a0e3ad6 | 31 | #include <linux/slab.h> |
474828a4 | 32 | #include <sound/ac97_codec.h> |
db2a4165 FM |
33 | #include <sound/core.h> |
34 | #include <sound/pcm.h> | |
35 | #include <sound/pcm_params.h> | |
36 | #include <sound/soc.h> | |
37 | #include <sound/soc-dapm.h> | |
38 | #include <sound/initval.h> | |
39 | ||
db2a4165 | 40 | static DEFINE_MUTEX(pcm_mutex); |
db2a4165 FM |
41 | static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq); |
42 | ||
384c89e2 MB |
43 | #ifdef CONFIG_DEBUG_FS |
44 | static struct dentry *debugfs_root; | |
45 | #endif | |
46 | ||
c5af3a2e MB |
47 | static DEFINE_MUTEX(client_mutex); |
48 | static LIST_HEAD(card_list); | |
9115171a | 49 | static LIST_HEAD(dai_list); |
12a48a8c | 50 | static LIST_HEAD(platform_list); |
0d0cf00a | 51 | static LIST_HEAD(codec_list); |
c5af3a2e MB |
52 | |
53 | static int snd_soc_register_card(struct snd_soc_card *card); | |
54 | static int snd_soc_unregister_card(struct snd_soc_card *card); | |
55 | ||
db2a4165 FM |
56 | /* |
57 | * This is a timeout to do a DAPM powerdown after a stream is closed(). | |
58 | * It can be used to eliminate pops between different playback streams, e.g. | |
59 | * between two audio tracks. | |
60 | */ | |
61 | static int pmdown_time = 5000; | |
62 | module_param(pmdown_time, int, 0); | |
63 | MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)"); | |
64 | ||
965ac42c LG |
65 | /* |
66 | * This function forces any delayed work to be queued and run. | |
67 | */ | |
68 | static int run_delayed_work(struct delayed_work *dwork) | |
69 | { | |
70 | int ret; | |
71 | ||
72 | /* cancel any work waiting to be queued. */ | |
73 | ret = cancel_delayed_work(dwork); | |
74 | ||
75 | /* if there was any work waiting then we run it now and | |
76 | * wait for it's completion */ | |
77 | if (ret) { | |
78 | schedule_delayed_work(dwork, 0); | |
79 | flush_scheduled_work(); | |
80 | } | |
81 | return ret; | |
82 | } | |
83 | ||
2624d5fa MB |
84 | /* codec register dump */ |
85 | static ssize_t soc_codec_reg_show(struct snd_soc_codec *codec, char *buf) | |
86 | { | |
87 | int i, step = 1, count = 0; | |
88 | ||
89 | if (!codec->reg_cache_size) | |
90 | return 0; | |
91 | ||
92 | if (codec->reg_cache_step) | |
93 | step = codec->reg_cache_step; | |
94 | ||
95 | count += sprintf(buf, "%s registers\n", codec->name); | |
96 | for (i = 0; i < codec->reg_cache_size; i += step) { | |
97 | if (codec->readable_register && !codec->readable_register(i)) | |
98 | continue; | |
99 | ||
100 | count += sprintf(buf + count, "%2x: ", i); | |
101 | if (count >= PAGE_SIZE - 1) | |
102 | break; | |
103 | ||
104 | if (codec->display_register) | |
105 | count += codec->display_register(codec, buf + count, | |
106 | PAGE_SIZE - count, i); | |
107 | else | |
108 | count += snprintf(buf + count, PAGE_SIZE - count, | |
109 | "%4x", codec->read(codec, i)); | |
110 | ||
111 | if (count >= PAGE_SIZE - 1) | |
112 | break; | |
113 | ||
114 | count += snprintf(buf + count, PAGE_SIZE - count, "\n"); | |
115 | if (count >= PAGE_SIZE - 1) | |
116 | break; | |
117 | } | |
118 | ||
119 | /* Truncate count; min() would cause a warning */ | |
120 | if (count >= PAGE_SIZE) | |
121 | count = PAGE_SIZE - 1; | |
122 | ||
123 | return count; | |
124 | } | |
125 | static ssize_t codec_reg_show(struct device *dev, | |
126 | struct device_attribute *attr, char *buf) | |
127 | { | |
128 | struct snd_soc_device *devdata = dev_get_drvdata(dev); | |
129 | return soc_codec_reg_show(devdata->card->codec, buf); | |
130 | } | |
131 | ||
132 | static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL); | |
133 | ||
dbe21408 MB |
134 | static ssize_t pmdown_time_show(struct device *dev, |
135 | struct device_attribute *attr, char *buf) | |
136 | { | |
137 | struct snd_soc_device *socdev = dev_get_drvdata(dev); | |
138 | struct snd_soc_card *card = socdev->card; | |
139 | ||
6c5f1fed | 140 | return sprintf(buf, "%ld\n", card->pmdown_time); |
dbe21408 MB |
141 | } |
142 | ||
143 | static ssize_t pmdown_time_set(struct device *dev, | |
144 | struct device_attribute *attr, | |
145 | const char *buf, size_t count) | |
146 | { | |
147 | struct snd_soc_device *socdev = dev_get_drvdata(dev); | |
148 | struct snd_soc_card *card = socdev->card; | |
149 | ||
150 | strict_strtol(buf, 10, &card->pmdown_time); | |
151 | ||
152 | return count; | |
153 | } | |
154 | ||
155 | static DEVICE_ATTR(pmdown_time, 0644, pmdown_time_show, pmdown_time_set); | |
156 | ||
2624d5fa MB |
157 | #ifdef CONFIG_DEBUG_FS |
158 | static int codec_reg_open_file(struct inode *inode, struct file *file) | |
159 | { | |
160 | file->private_data = inode->i_private; | |
161 | return 0; | |
162 | } | |
163 | ||
164 | static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf, | |
165 | size_t count, loff_t *ppos) | |
166 | { | |
167 | ssize_t ret; | |
168 | struct snd_soc_codec *codec = file->private_data; | |
169 | char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL); | |
170 | if (!buf) | |
171 | return -ENOMEM; | |
172 | ret = soc_codec_reg_show(codec, buf); | |
173 | if (ret >= 0) | |
174 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); | |
175 | kfree(buf); | |
176 | return ret; | |
177 | } | |
178 | ||
179 | static ssize_t codec_reg_write_file(struct file *file, | |
180 | const char __user *user_buf, size_t count, loff_t *ppos) | |
181 | { | |
182 | char buf[32]; | |
183 | int buf_size; | |
184 | char *start = buf; | |
185 | unsigned long reg, value; | |
186 | int step = 1; | |
187 | struct snd_soc_codec *codec = file->private_data; | |
188 | ||
189 | buf_size = min(count, (sizeof(buf)-1)); | |
190 | if (copy_from_user(buf, user_buf, buf_size)) | |
191 | return -EFAULT; | |
192 | buf[buf_size] = 0; | |
193 | ||
194 | if (codec->reg_cache_step) | |
195 | step = codec->reg_cache_step; | |
196 | ||
197 | while (*start == ' ') | |
198 | start++; | |
199 | reg = simple_strtoul(start, &start, 16); | |
200 | if ((reg >= codec->reg_cache_size) || (reg % step)) | |
201 | return -EINVAL; | |
202 | while (*start == ' ') | |
203 | start++; | |
204 | if (strict_strtoul(start, 16, &value)) | |
205 | return -EINVAL; | |
206 | codec->write(codec, reg, value); | |
207 | return buf_size; | |
208 | } | |
209 | ||
210 | static const struct file_operations codec_reg_fops = { | |
211 | .open = codec_reg_open_file, | |
212 | .read = codec_reg_read_file, | |
213 | .write = codec_reg_write_file, | |
214 | }; | |
215 | ||
216 | static void soc_init_codec_debugfs(struct snd_soc_codec *codec) | |
217 | { | |
218 | char codec_root[128]; | |
219 | ||
220 | if (codec->dev) | |
221 | snprintf(codec_root, sizeof(codec_root), | |
222 | "%s.%s", codec->name, dev_name(codec->dev)); | |
223 | else | |
224 | snprintf(codec_root, sizeof(codec_root), | |
225 | "%s", codec->name); | |
226 | ||
227 | codec->debugfs_codec_root = debugfs_create_dir(codec_root, | |
228 | debugfs_root); | |
229 | if (!codec->debugfs_codec_root) { | |
230 | printk(KERN_WARNING | |
231 | "ASoC: Failed to create codec debugfs directory\n"); | |
232 | return; | |
233 | } | |
234 | ||
235 | codec->debugfs_reg = debugfs_create_file("codec_reg", 0644, | |
236 | codec->debugfs_codec_root, | |
237 | codec, &codec_reg_fops); | |
238 | if (!codec->debugfs_reg) | |
239 | printk(KERN_WARNING | |
240 | "ASoC: Failed to create codec register debugfs file\n"); | |
241 | ||
242 | codec->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0744, | |
243 | codec->debugfs_codec_root, | |
244 | &codec->pop_time); | |
245 | if (!codec->debugfs_pop_time) | |
246 | printk(KERN_WARNING | |
247 | "Failed to create pop time debugfs file\n"); | |
248 | ||
249 | codec->debugfs_dapm = debugfs_create_dir("dapm", | |
250 | codec->debugfs_codec_root); | |
251 | if (!codec->debugfs_dapm) | |
252 | printk(KERN_WARNING | |
253 | "Failed to create DAPM debugfs directory\n"); | |
254 | ||
255 | snd_soc_dapm_debugfs_init(codec); | |
256 | } | |
257 | ||
258 | static void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec) | |
259 | { | |
260 | debugfs_remove_recursive(codec->debugfs_codec_root); | |
261 | } | |
262 | ||
263 | #else | |
264 | ||
265 | static inline void soc_init_codec_debugfs(struct snd_soc_codec *codec) | |
266 | { | |
267 | } | |
268 | ||
269 | static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec) | |
270 | { | |
271 | } | |
272 | #endif | |
273 | ||
db2a4165 FM |
274 | #ifdef CONFIG_SND_SOC_AC97_BUS |
275 | /* unregister ac97 codec */ | |
276 | static int soc_ac97_dev_unregister(struct snd_soc_codec *codec) | |
277 | { | |
278 | if (codec->ac97->dev.bus) | |
279 | device_unregister(&codec->ac97->dev); | |
280 | return 0; | |
281 | } | |
282 | ||
283 | /* stop no dev release warning */ | |
284 | static void soc_ac97_device_release(struct device *dev){} | |
285 | ||
286 | /* register ac97 codec to bus */ | |
287 | static int soc_ac97_dev_register(struct snd_soc_codec *codec) | |
288 | { | |
289 | int err; | |
290 | ||
291 | codec->ac97->dev.bus = &ac97_bus_type; | |
4ac5c61f | 292 | codec->ac97->dev.parent = codec->card->dev; |
db2a4165 FM |
293 | codec->ac97->dev.release = soc_ac97_device_release; |
294 | ||
bb072bf0 KS |
295 | dev_set_name(&codec->ac97->dev, "%d-%d:%s", |
296 | codec->card->number, 0, codec->name); | |
db2a4165 FM |
297 | err = device_register(&codec->ac97->dev); |
298 | if (err < 0) { | |
299 | snd_printk(KERN_ERR "Can't register ac97 bus\n"); | |
300 | codec->ac97->dev.bus = NULL; | |
301 | return err; | |
302 | } | |
303 | return 0; | |
304 | } | |
305 | #endif | |
306 | ||
06f409d7 MB |
307 | static int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream) |
308 | { | |
309 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
310 | struct snd_soc_device *socdev = rtd->socdev; | |
311 | struct snd_soc_card *card = socdev->card; | |
312 | struct snd_soc_dai_link *machine = rtd->dai; | |
313 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; | |
314 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
315 | int ret; | |
316 | ||
317 | if (codec_dai->symmetric_rates || cpu_dai->symmetric_rates || | |
318 | machine->symmetric_rates) { | |
50831450 | 319 | dev_dbg(card->dev, "Symmetry forces %dHz rate\n", |
06f409d7 MB |
320 | machine->rate); |
321 | ||
322 | ret = snd_pcm_hw_constraint_minmax(substream->runtime, | |
323 | SNDRV_PCM_HW_PARAM_RATE, | |
324 | machine->rate, | |
325 | machine->rate); | |
326 | if (ret < 0) { | |
327 | dev_err(card->dev, | |
328 | "Unable to apply rate symmetry constraint: %d\n", ret); | |
329 | return ret; | |
330 | } | |
331 | } | |
332 | ||
333 | return 0; | |
334 | } | |
335 | ||
db2a4165 FM |
336 | /* |
337 | * Called by ALSA when a PCM substream is opened, the runtime->hw record is | |
338 | * then initialized and any private data can be allocated. This also calls | |
339 | * startup for the cpu DAI, platform, machine and codec DAI. | |
340 | */ | |
341 | static int soc_pcm_open(struct snd_pcm_substream *substream) | |
342 | { | |
343 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
344 | struct snd_soc_device *socdev = rtd->socdev; | |
87689d56 | 345 | struct snd_soc_card *card = socdev->card; |
db2a4165 | 346 | struct snd_pcm_runtime *runtime = substream->runtime; |
cb666e5b | 347 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 | 348 | struct snd_soc_platform *platform = card->platform; |
3c4b266f LG |
349 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
350 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
351 | int ret = 0; |
352 | ||
353 | mutex_lock(&pcm_mutex); | |
354 | ||
355 | /* startup the audio subsystem */ | |
6335d055 EM |
356 | if (cpu_dai->ops->startup) { |
357 | ret = cpu_dai->ops->startup(substream, cpu_dai); | |
db2a4165 FM |
358 | if (ret < 0) { |
359 | printk(KERN_ERR "asoc: can't open interface %s\n", | |
cb666e5b | 360 | cpu_dai->name); |
db2a4165 FM |
361 | goto out; |
362 | } | |
363 | } | |
364 | ||
365 | if (platform->pcm_ops->open) { | |
366 | ret = platform->pcm_ops->open(substream); | |
367 | if (ret < 0) { | |
368 | printk(KERN_ERR "asoc: can't open platform %s\n", platform->name); | |
369 | goto platform_err; | |
370 | } | |
371 | } | |
372 | ||
6335d055 EM |
373 | if (codec_dai->ops->startup) { |
374 | ret = codec_dai->ops->startup(substream, codec_dai); | |
db2a4165 | 375 | if (ret < 0) { |
cb666e5b LG |
376 | printk(KERN_ERR "asoc: can't open codec %s\n", |
377 | codec_dai->name); | |
378 | goto codec_dai_err; | |
db2a4165 FM |
379 | } |
380 | } | |
381 | ||
cb666e5b LG |
382 | if (machine->ops && machine->ops->startup) { |
383 | ret = machine->ops->startup(substream); | |
db2a4165 | 384 | if (ret < 0) { |
cb666e5b LG |
385 | printk(KERN_ERR "asoc: %s startup failed\n", machine->name); |
386 | goto machine_err; | |
db2a4165 FM |
387 | } |
388 | } | |
389 | ||
db2a4165 FM |
390 | /* Check that the codec and cpu DAI's are compatible */ |
391 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
392 | runtime->hw.rate_min = | |
3ff3f64b MB |
393 | max(codec_dai->playback.rate_min, |
394 | cpu_dai->playback.rate_min); | |
db2a4165 | 395 | runtime->hw.rate_max = |
3ff3f64b MB |
396 | min(codec_dai->playback.rate_max, |
397 | cpu_dai->playback.rate_max); | |
db2a4165 | 398 | runtime->hw.channels_min = |
cb666e5b LG |
399 | max(codec_dai->playback.channels_min, |
400 | cpu_dai->playback.channels_min); | |
db2a4165 | 401 | runtime->hw.channels_max = |
cb666e5b LG |
402 | min(codec_dai->playback.channels_max, |
403 | cpu_dai->playback.channels_max); | |
404 | runtime->hw.formats = | |
405 | codec_dai->playback.formats & cpu_dai->playback.formats; | |
406 | runtime->hw.rates = | |
407 | codec_dai->playback.rates & cpu_dai->playback.rates; | |
d9ad6296 JB |
408 | if (codec_dai->playback.rates |
409 | & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) | |
410 | runtime->hw.rates |= cpu_dai->playback.rates; | |
411 | if (cpu_dai->playback.rates | |
412 | & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) | |
413 | runtime->hw.rates |= codec_dai->playback.rates; | |
db2a4165 FM |
414 | } else { |
415 | runtime->hw.rate_min = | |
3ff3f64b MB |
416 | max(codec_dai->capture.rate_min, |
417 | cpu_dai->capture.rate_min); | |
db2a4165 | 418 | runtime->hw.rate_max = |
3ff3f64b MB |
419 | min(codec_dai->capture.rate_max, |
420 | cpu_dai->capture.rate_max); | |
db2a4165 | 421 | runtime->hw.channels_min = |
cb666e5b LG |
422 | max(codec_dai->capture.channels_min, |
423 | cpu_dai->capture.channels_min); | |
db2a4165 | 424 | runtime->hw.channels_max = |
cb666e5b LG |
425 | min(codec_dai->capture.channels_max, |
426 | cpu_dai->capture.channels_max); | |
427 | runtime->hw.formats = | |
428 | codec_dai->capture.formats & cpu_dai->capture.formats; | |
429 | runtime->hw.rates = | |
430 | codec_dai->capture.rates & cpu_dai->capture.rates; | |
d9ad6296 JB |
431 | if (codec_dai->capture.rates |
432 | & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) | |
433 | runtime->hw.rates |= cpu_dai->capture.rates; | |
434 | if (cpu_dai->capture.rates | |
435 | & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) | |
436 | runtime->hw.rates |= codec_dai->capture.rates; | |
db2a4165 FM |
437 | } |
438 | ||
439 | snd_pcm_limit_hw_rates(runtime); | |
440 | if (!runtime->hw.rates) { | |
441 | printk(KERN_ERR "asoc: %s <-> %s No matching rates\n", | |
cb666e5b | 442 | codec_dai->name, cpu_dai->name); |
bb1c0478 | 443 | goto config_err; |
db2a4165 FM |
444 | } |
445 | if (!runtime->hw.formats) { | |
446 | printk(KERN_ERR "asoc: %s <-> %s No matching formats\n", | |
cb666e5b | 447 | codec_dai->name, cpu_dai->name); |
bb1c0478 | 448 | goto config_err; |
db2a4165 FM |
449 | } |
450 | if (!runtime->hw.channels_min || !runtime->hw.channels_max) { | |
451 | printk(KERN_ERR "asoc: %s <-> %s No matching channels\n", | |
cb666e5b | 452 | codec_dai->name, cpu_dai->name); |
bb1c0478 | 453 | goto config_err; |
db2a4165 FM |
454 | } |
455 | ||
06f409d7 MB |
456 | /* Symmetry only applies if we've already got an active stream. */ |
457 | if (cpu_dai->active || codec_dai->active) { | |
458 | ret = soc_pcm_apply_symmetry(substream); | |
459 | if (ret != 0) | |
bb1c0478 | 460 | goto config_err; |
06f409d7 MB |
461 | } |
462 | ||
f24368c2 MB |
463 | pr_debug("asoc: %s <-> %s info:\n", codec_dai->name, cpu_dai->name); |
464 | pr_debug("asoc: rate mask 0x%x\n", runtime->hw.rates); | |
465 | pr_debug("asoc: min ch %d max ch %d\n", runtime->hw.channels_min, | |
466 | runtime->hw.channels_max); | |
467 | pr_debug("asoc: min rate %d max rate %d\n", runtime->hw.rate_min, | |
468 | runtime->hw.rate_max); | |
db2a4165 | 469 | |
14dc5734 JB |
470 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
471 | cpu_dai->playback.active++; | |
472 | codec_dai->playback.active++; | |
473 | } else { | |
474 | cpu_dai->capture.active++; | |
475 | codec_dai->capture.active++; | |
476 | } | |
477 | cpu_dai->active++; | |
478 | codec_dai->active++; | |
6627a653 | 479 | card->codec->active++; |
db2a4165 FM |
480 | mutex_unlock(&pcm_mutex); |
481 | return 0; | |
482 | ||
bb1c0478 | 483 | config_err: |
db2a4165 FM |
484 | if (machine->ops && machine->ops->shutdown) |
485 | machine->ops->shutdown(substream); | |
486 | ||
bb1c0478 JB |
487 | machine_err: |
488 | if (codec_dai->ops->shutdown) | |
489 | codec_dai->ops->shutdown(substream, codec_dai); | |
490 | ||
cb666e5b | 491 | codec_dai_err: |
db2a4165 FM |
492 | if (platform->pcm_ops->close) |
493 | platform->pcm_ops->close(substream); | |
494 | ||
495 | platform_err: | |
6335d055 EM |
496 | if (cpu_dai->ops->shutdown) |
497 | cpu_dai->ops->shutdown(substream, cpu_dai); | |
db2a4165 FM |
498 | out: |
499 | mutex_unlock(&pcm_mutex); | |
500 | return ret; | |
501 | } | |
502 | ||
503 | /* | |
3a4fa0a2 | 504 | * Power down the audio subsystem pmdown_time msecs after close is called. |
db2a4165 FM |
505 | * This is to ensure there are no pops or clicks in between any music tracks |
506 | * due to DAPM power cycling. | |
507 | */ | |
4484bb2e | 508 | static void close_delayed_work(struct work_struct *work) |
db2a4165 | 509 | { |
6308419a MB |
510 | struct snd_soc_card *card = container_of(work, struct snd_soc_card, |
511 | delayed_work.work); | |
6627a653 | 512 | struct snd_soc_codec *codec = card->codec; |
3c4b266f | 513 | struct snd_soc_dai *codec_dai; |
db2a4165 FM |
514 | int i; |
515 | ||
516 | mutex_lock(&pcm_mutex); | |
3ff3f64b | 517 | for (i = 0; i < codec->num_dai; i++) { |
db2a4165 FM |
518 | codec_dai = &codec->dai[i]; |
519 | ||
f24368c2 MB |
520 | pr_debug("pop wq checking: %s status: %s waiting: %s\n", |
521 | codec_dai->playback.stream_name, | |
522 | codec_dai->playback.active ? "active" : "inactive", | |
523 | codec_dai->pop_wait ? "yes" : "no"); | |
db2a4165 FM |
524 | |
525 | /* are we waiting on this codec DAI stream */ | |
526 | if (codec_dai->pop_wait == 1) { | |
db2a4165 | 527 | codec_dai->pop_wait = 0; |
0b4d221b LG |
528 | snd_soc_dapm_stream_event(codec, |
529 | codec_dai->playback.stream_name, | |
db2a4165 | 530 | SND_SOC_DAPM_STREAM_STOP); |
db2a4165 FM |
531 | } |
532 | } | |
533 | mutex_unlock(&pcm_mutex); | |
534 | } | |
535 | ||
536 | /* | |
537 | * Called by ALSA when a PCM substream is closed. Private data can be | |
538 | * freed here. The cpu DAI, codec DAI, machine and platform are also | |
539 | * shutdown. | |
540 | */ | |
541 | static int soc_codec_close(struct snd_pcm_substream *substream) | |
542 | { | |
543 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
544 | struct snd_soc_device *socdev = rtd->socdev; | |
6308419a | 545 | struct snd_soc_card *card = socdev->card; |
cb666e5b | 546 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 | 547 | struct snd_soc_platform *platform = card->platform; |
3c4b266f LG |
548 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
549 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
6627a653 | 550 | struct snd_soc_codec *codec = card->codec; |
db2a4165 FM |
551 | |
552 | mutex_lock(&pcm_mutex); | |
553 | ||
14dc5734 JB |
554 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
555 | cpu_dai->playback.active--; | |
556 | codec_dai->playback.active--; | |
557 | } else { | |
558 | cpu_dai->capture.active--; | |
559 | codec_dai->capture.active--; | |
db2a4165 | 560 | } |
14dc5734 JB |
561 | |
562 | cpu_dai->active--; | |
563 | codec_dai->active--; | |
db2a4165 FM |
564 | codec->active--; |
565 | ||
6010b2da MB |
566 | /* Muting the DAC suppresses artifacts caused during digital |
567 | * shutdown, for example from stopping clocks. | |
568 | */ | |
569 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
570 | snd_soc_dai_digital_mute(codec_dai, 1); | |
571 | ||
6335d055 EM |
572 | if (cpu_dai->ops->shutdown) |
573 | cpu_dai->ops->shutdown(substream, cpu_dai); | |
db2a4165 | 574 | |
6335d055 EM |
575 | if (codec_dai->ops->shutdown) |
576 | codec_dai->ops->shutdown(substream, codec_dai); | |
db2a4165 FM |
577 | |
578 | if (machine->ops && machine->ops->shutdown) | |
579 | machine->ops->shutdown(substream); | |
580 | ||
581 | if (platform->pcm_ops->close) | |
582 | platform->pcm_ops->close(substream); | |
db2a4165 FM |
583 | |
584 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
585 | /* start delayed pop wq here for playback streams */ | |
cb666e5b | 586 | codec_dai->pop_wait = 1; |
6308419a | 587 | schedule_delayed_work(&card->delayed_work, |
96dd3622 | 588 | msecs_to_jiffies(card->pmdown_time)); |
db2a4165 FM |
589 | } else { |
590 | /* capture streams can be powered down now */ | |
cb666e5b | 591 | snd_soc_dapm_stream_event(codec, |
0b4d221b LG |
592 | codec_dai->capture.stream_name, |
593 | SND_SOC_DAPM_STREAM_STOP); | |
db2a4165 FM |
594 | } |
595 | ||
596 | mutex_unlock(&pcm_mutex); | |
597 | return 0; | |
598 | } | |
599 | ||
600 | /* | |
601 | * Called by ALSA when the PCM substream is prepared, can set format, sample | |
602 | * rate, etc. This function is non atomic and can be called multiple times, | |
603 | * it can refer to the runtime info. | |
604 | */ | |
605 | static int soc_pcm_prepare(struct snd_pcm_substream *substream) | |
606 | { | |
607 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
608 | struct snd_soc_device *socdev = rtd->socdev; | |
6308419a | 609 | struct snd_soc_card *card = socdev->card; |
cb666e5b | 610 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 | 611 | struct snd_soc_platform *platform = card->platform; |
3c4b266f LG |
612 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
613 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
6627a653 | 614 | struct snd_soc_codec *codec = card->codec; |
db2a4165 FM |
615 | int ret = 0; |
616 | ||
617 | mutex_lock(&pcm_mutex); | |
cb666e5b LG |
618 | |
619 | if (machine->ops && machine->ops->prepare) { | |
620 | ret = machine->ops->prepare(substream); | |
621 | if (ret < 0) { | |
622 | printk(KERN_ERR "asoc: machine prepare error\n"); | |
623 | goto out; | |
624 | } | |
625 | } | |
626 | ||
db2a4165 FM |
627 | if (platform->pcm_ops->prepare) { |
628 | ret = platform->pcm_ops->prepare(substream); | |
a71a468a LG |
629 | if (ret < 0) { |
630 | printk(KERN_ERR "asoc: platform prepare error\n"); | |
db2a4165 | 631 | goto out; |
a71a468a | 632 | } |
db2a4165 FM |
633 | } |
634 | ||
6335d055 EM |
635 | if (codec_dai->ops->prepare) { |
636 | ret = codec_dai->ops->prepare(substream, codec_dai); | |
a71a468a LG |
637 | if (ret < 0) { |
638 | printk(KERN_ERR "asoc: codec DAI prepare error\n"); | |
db2a4165 | 639 | goto out; |
a71a468a | 640 | } |
db2a4165 FM |
641 | } |
642 | ||
6335d055 EM |
643 | if (cpu_dai->ops->prepare) { |
644 | ret = cpu_dai->ops->prepare(substream, cpu_dai); | |
cb666e5b LG |
645 | if (ret < 0) { |
646 | printk(KERN_ERR "asoc: cpu DAI prepare error\n"); | |
647 | goto out; | |
648 | } | |
649 | } | |
db2a4165 | 650 | |
d45f6219 MB |
651 | /* cancel any delayed stream shutdown that is pending */ |
652 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
653 | codec_dai->pop_wait) { | |
654 | codec_dai->pop_wait = 0; | |
6308419a | 655 | cancel_delayed_work(&card->delayed_work); |
d45f6219 | 656 | } |
db2a4165 | 657 | |
452c5eaa MB |
658 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
659 | snd_soc_dapm_stream_event(codec, | |
660 | codec_dai->playback.stream_name, | |
661 | SND_SOC_DAPM_STREAM_START); | |
662 | else | |
663 | snd_soc_dapm_stream_event(codec, | |
664 | codec_dai->capture.stream_name, | |
665 | SND_SOC_DAPM_STREAM_START); | |
8c6529db | 666 | |
452c5eaa | 667 | snd_soc_dai_digital_mute(codec_dai, 0); |
db2a4165 FM |
668 | |
669 | out: | |
670 | mutex_unlock(&pcm_mutex); | |
671 | return ret; | |
672 | } | |
673 | ||
674 | /* | |
675 | * Called by ALSA when the hardware params are set by application. This | |
676 | * function can also be called multiple times and can allocate buffers | |
677 | * (using snd_pcm_lib_* ). It's non-atomic. | |
678 | */ | |
679 | static int soc_pcm_hw_params(struct snd_pcm_substream *substream, | |
680 | struct snd_pcm_hw_params *params) | |
681 | { | |
682 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
683 | struct snd_soc_device *socdev = rtd->socdev; | |
cb666e5b | 684 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 MB |
685 | struct snd_soc_card *card = socdev->card; |
686 | struct snd_soc_platform *platform = card->platform; | |
3c4b266f LG |
687 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
688 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
689 | int ret = 0; |
690 | ||
691 | mutex_lock(&pcm_mutex); | |
692 | ||
cb666e5b LG |
693 | if (machine->ops && machine->ops->hw_params) { |
694 | ret = machine->ops->hw_params(substream, params); | |
695 | if (ret < 0) { | |
696 | printk(KERN_ERR "asoc: machine hw_params failed\n"); | |
db2a4165 | 697 | goto out; |
cb666e5b | 698 | } |
db2a4165 FM |
699 | } |
700 | ||
6335d055 EM |
701 | if (codec_dai->ops->hw_params) { |
702 | ret = codec_dai->ops->hw_params(substream, params, codec_dai); | |
db2a4165 FM |
703 | if (ret < 0) { |
704 | printk(KERN_ERR "asoc: can't set codec %s hw params\n", | |
cb666e5b LG |
705 | codec_dai->name); |
706 | goto codec_err; | |
db2a4165 FM |
707 | } |
708 | } | |
709 | ||
6335d055 EM |
710 | if (cpu_dai->ops->hw_params) { |
711 | ret = cpu_dai->ops->hw_params(substream, params, cpu_dai); | |
db2a4165 | 712 | if (ret < 0) { |
3ff3f64b | 713 | printk(KERN_ERR "asoc: interface %s hw params failed\n", |
cb666e5b | 714 | cpu_dai->name); |
db2a4165 FM |
715 | goto interface_err; |
716 | } | |
717 | } | |
718 | ||
719 | if (platform->pcm_ops->hw_params) { | |
720 | ret = platform->pcm_ops->hw_params(substream, params); | |
721 | if (ret < 0) { | |
3ff3f64b | 722 | printk(KERN_ERR "asoc: platform %s hw params failed\n", |
db2a4165 FM |
723 | platform->name); |
724 | goto platform_err; | |
725 | } | |
726 | } | |
727 | ||
06f409d7 MB |
728 | machine->rate = params_rate(params); |
729 | ||
db2a4165 FM |
730 | out: |
731 | mutex_unlock(&pcm_mutex); | |
732 | return ret; | |
733 | ||
db2a4165 | 734 | platform_err: |
6335d055 EM |
735 | if (cpu_dai->ops->hw_free) |
736 | cpu_dai->ops->hw_free(substream, cpu_dai); | |
db2a4165 FM |
737 | |
738 | interface_err: | |
6335d055 EM |
739 | if (codec_dai->ops->hw_free) |
740 | codec_dai->ops->hw_free(substream, codec_dai); | |
cb666e5b LG |
741 | |
742 | codec_err: | |
3ff3f64b | 743 | if (machine->ops && machine->ops->hw_free) |
cb666e5b | 744 | machine->ops->hw_free(substream); |
db2a4165 FM |
745 | |
746 | mutex_unlock(&pcm_mutex); | |
747 | return ret; | |
748 | } | |
749 | ||
750 | /* | |
751 | * Free's resources allocated by hw_params, can be called multiple times | |
752 | */ | |
753 | static int soc_pcm_hw_free(struct snd_pcm_substream *substream) | |
754 | { | |
755 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
756 | struct snd_soc_device *socdev = rtd->socdev; | |
cb666e5b | 757 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 MB |
758 | struct snd_soc_card *card = socdev->card; |
759 | struct snd_soc_platform *platform = card->platform; | |
3c4b266f LG |
760 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
761 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
6627a653 | 762 | struct snd_soc_codec *codec = card->codec; |
db2a4165 FM |
763 | |
764 | mutex_lock(&pcm_mutex); | |
765 | ||
766 | /* apply codec digital mute */ | |
8c6529db LG |
767 | if (!codec->active) |
768 | snd_soc_dai_digital_mute(codec_dai, 1); | |
db2a4165 FM |
769 | |
770 | /* free any machine hw params */ | |
771 | if (machine->ops && machine->ops->hw_free) | |
772 | machine->ops->hw_free(substream); | |
773 | ||
774 | /* free any DMA resources */ | |
775 | if (platform->pcm_ops->hw_free) | |
776 | platform->pcm_ops->hw_free(substream); | |
777 | ||
778 | /* now free hw params for the DAI's */ | |
6335d055 EM |
779 | if (codec_dai->ops->hw_free) |
780 | codec_dai->ops->hw_free(substream, codec_dai); | |
db2a4165 | 781 | |
6335d055 EM |
782 | if (cpu_dai->ops->hw_free) |
783 | cpu_dai->ops->hw_free(substream, cpu_dai); | |
db2a4165 FM |
784 | |
785 | mutex_unlock(&pcm_mutex); | |
786 | return 0; | |
787 | } | |
788 | ||
789 | static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd) | |
790 | { | |
791 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
792 | struct snd_soc_device *socdev = rtd->socdev; | |
87689d56 | 793 | struct snd_soc_card *card= socdev->card; |
cb666e5b | 794 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 | 795 | struct snd_soc_platform *platform = card->platform; |
3c4b266f LG |
796 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
797 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
798 | int ret; |
799 | ||
6335d055 EM |
800 | if (codec_dai->ops->trigger) { |
801 | ret = codec_dai->ops->trigger(substream, cmd, codec_dai); | |
db2a4165 FM |
802 | if (ret < 0) |
803 | return ret; | |
804 | } | |
805 | ||
806 | if (platform->pcm_ops->trigger) { | |
807 | ret = platform->pcm_ops->trigger(substream, cmd); | |
808 | if (ret < 0) | |
809 | return ret; | |
810 | } | |
811 | ||
6335d055 EM |
812 | if (cpu_dai->ops->trigger) { |
813 | ret = cpu_dai->ops->trigger(substream, cmd, cpu_dai); | |
db2a4165 FM |
814 | if (ret < 0) |
815 | return ret; | |
816 | } | |
817 | return 0; | |
818 | } | |
819 | ||
377b6f62 PU |
820 | /* |
821 | * soc level wrapper for pointer callback | |
258020d0 PU |
822 | * If cpu_dai, codec_dai, platform driver has the delay callback, than |
823 | * the runtime->delay will be updated accordingly. | |
377b6f62 PU |
824 | */ |
825 | static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream) | |
826 | { | |
827 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
828 | struct snd_soc_device *socdev = rtd->socdev; | |
829 | struct snd_soc_card *card = socdev->card; | |
830 | struct snd_soc_platform *platform = card->platform; | |
258020d0 PU |
831 | struct snd_soc_dai_link *machine = rtd->dai; |
832 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; | |
833 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
834 | struct snd_pcm_runtime *runtime = substream->runtime; | |
377b6f62 | 835 | snd_pcm_uframes_t offset = 0; |
258020d0 | 836 | snd_pcm_sframes_t delay = 0; |
377b6f62 PU |
837 | |
838 | if (platform->pcm_ops->pointer) | |
839 | offset = platform->pcm_ops->pointer(substream); | |
840 | ||
258020d0 PU |
841 | if (cpu_dai->ops->delay) |
842 | delay += cpu_dai->ops->delay(substream, cpu_dai); | |
843 | ||
844 | if (codec_dai->ops->delay) | |
845 | delay += codec_dai->ops->delay(substream, codec_dai); | |
846 | ||
847 | if (platform->delay) | |
848 | delay += platform->delay(substream, codec_dai); | |
849 | ||
850 | runtime->delay = delay; | |
851 | ||
377b6f62 PU |
852 | return offset; |
853 | } | |
854 | ||
db2a4165 FM |
855 | /* ASoC PCM operations */ |
856 | static struct snd_pcm_ops soc_pcm_ops = { | |
857 | .open = soc_pcm_open, | |
858 | .close = soc_codec_close, | |
859 | .hw_params = soc_pcm_hw_params, | |
860 | .hw_free = soc_pcm_hw_free, | |
861 | .prepare = soc_pcm_prepare, | |
862 | .trigger = soc_pcm_trigger, | |
377b6f62 | 863 | .pointer = soc_pcm_pointer, |
db2a4165 FM |
864 | }; |
865 | ||
866 | #ifdef CONFIG_PM | |
867 | /* powers down audio subsystem for suspend */ | |
416356fc | 868 | static int soc_suspend(struct device *dev) |
db2a4165 | 869 | { |
416356fc | 870 | struct platform_device *pdev = to_platform_device(dev); |
3ff3f64b | 871 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
87506549 | 872 | struct snd_soc_card *card = socdev->card; |
87689d56 | 873 | struct snd_soc_platform *platform = card->platform; |
3ff3f64b | 874 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; |
6627a653 | 875 | struct snd_soc_codec *codec = card->codec; |
db2a4165 FM |
876 | int i; |
877 | ||
e3509ff0 DM |
878 | /* If the initialization of this soc device failed, there is no codec |
879 | * associated with it. Just bail out in this case. | |
880 | */ | |
881 | if (!codec) | |
882 | return 0; | |
883 | ||
6ed25978 AG |
884 | /* Due to the resume being scheduled into a workqueue we could |
885 | * suspend before that's finished - wait for it to complete. | |
886 | */ | |
887 | snd_power_lock(codec->card); | |
888 | snd_power_wait(codec->card, SNDRV_CTL_POWER_D0); | |
889 | snd_power_unlock(codec->card); | |
890 | ||
891 | /* we're going to block userspace touching us until resume completes */ | |
892 | snd_power_change_state(codec->card, SNDRV_CTL_POWER_D3hot); | |
893 | ||
db2a4165 | 894 | /* mute any active DAC's */ |
dee89c4d MB |
895 | for (i = 0; i < card->num_links; i++) { |
896 | struct snd_soc_dai *dai = card->dai_link[i].codec_dai; | |
3efab7dc MB |
897 | |
898 | if (card->dai_link[i].ignore_suspend) | |
899 | continue; | |
900 | ||
6335d055 EM |
901 | if (dai->ops->digital_mute && dai->playback.active) |
902 | dai->ops->digital_mute(dai, 1); | |
db2a4165 FM |
903 | } |
904 | ||
4ccab3e7 | 905 | /* suspend all pcms */ |
3efab7dc MB |
906 | for (i = 0; i < card->num_links; i++) { |
907 | if (card->dai_link[i].ignore_suspend) | |
908 | continue; | |
909 | ||
87506549 | 910 | snd_pcm_suspend_all(card->dai_link[i].pcm); |
3efab7dc | 911 | } |
4ccab3e7 | 912 | |
87506549 | 913 | if (card->suspend_pre) |
416356fc | 914 | card->suspend_pre(pdev, PMSG_SUSPEND); |
db2a4165 | 915 | |
87506549 MB |
916 | for (i = 0; i < card->num_links; i++) { |
917 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
3efab7dc MB |
918 | |
919 | if (card->dai_link[i].ignore_suspend) | |
920 | continue; | |
921 | ||
3ba9e10a | 922 | if (cpu_dai->suspend && !cpu_dai->ac97_control) |
dc7d7b83 | 923 | cpu_dai->suspend(cpu_dai); |
db2a4165 | 924 | if (platform->suspend) |
d273ebe7 | 925 | platform->suspend(&card->dai_link[i]); |
db2a4165 FM |
926 | } |
927 | ||
928 | /* close any waiting streams and save state */ | |
6308419a | 929 | run_delayed_work(&card->delayed_work); |
0be9898a | 930 | codec->suspend_bias_level = codec->bias_level; |
db2a4165 | 931 | |
3ff3f64b | 932 | for (i = 0; i < codec->num_dai; i++) { |
db2a4165 | 933 | char *stream = codec->dai[i].playback.stream_name; |
3efab7dc MB |
934 | |
935 | if (card->dai_link[i].ignore_suspend) | |
936 | continue; | |
937 | ||
db2a4165 FM |
938 | if (stream != NULL) |
939 | snd_soc_dapm_stream_event(codec, stream, | |
940 | SND_SOC_DAPM_STREAM_SUSPEND); | |
941 | stream = codec->dai[i].capture.stream_name; | |
942 | if (stream != NULL) | |
943 | snd_soc_dapm_stream_event(codec, stream, | |
944 | SND_SOC_DAPM_STREAM_SUSPEND); | |
945 | } | |
946 | ||
1547aba9 MB |
947 | /* If there are paths active then the CODEC will be held with |
948 | * bias _ON and should not be suspended. */ | |
949 | if (codec_dev->suspend) { | |
950 | switch (codec->bias_level) { | |
951 | case SND_SOC_BIAS_STANDBY: | |
952 | case SND_SOC_BIAS_OFF: | |
953 | codec_dev->suspend(pdev, PMSG_SUSPEND); | |
954 | break; | |
955 | default: | |
956 | dev_dbg(socdev->dev, "CODEC is on over suspend\n"); | |
957 | break; | |
958 | } | |
959 | } | |
db2a4165 | 960 | |
87506549 MB |
961 | for (i = 0; i < card->num_links; i++) { |
962 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
3efab7dc MB |
963 | |
964 | if (card->dai_link[i].ignore_suspend) | |
965 | continue; | |
966 | ||
3ba9e10a | 967 | if (cpu_dai->suspend && cpu_dai->ac97_control) |
dc7d7b83 | 968 | cpu_dai->suspend(cpu_dai); |
db2a4165 FM |
969 | } |
970 | ||
87506549 | 971 | if (card->suspend_post) |
416356fc | 972 | card->suspend_post(pdev, PMSG_SUSPEND); |
db2a4165 FM |
973 | |
974 | return 0; | |
975 | } | |
976 | ||
6ed25978 AG |
977 | /* deferred resume work, so resume can complete before we finished |
978 | * setting our codec back up, which can be very slow on I2C | |
979 | */ | |
980 | static void soc_resume_deferred(struct work_struct *work) | |
db2a4165 | 981 | { |
6308419a MB |
982 | struct snd_soc_card *card = container_of(work, |
983 | struct snd_soc_card, | |
984 | deferred_resume_work); | |
985 | struct snd_soc_device *socdev = card->socdev; | |
87689d56 | 986 | struct snd_soc_platform *platform = card->platform; |
3ff3f64b | 987 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; |
6627a653 | 988 | struct snd_soc_codec *codec = card->codec; |
6ed25978 | 989 | struct platform_device *pdev = to_platform_device(socdev->dev); |
db2a4165 FM |
990 | int i; |
991 | ||
6ed25978 AG |
992 | /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time, |
993 | * so userspace apps are blocked from touching us | |
994 | */ | |
995 | ||
fde22f27 | 996 | dev_dbg(socdev->dev, "starting resume work\n"); |
6ed25978 | 997 | |
9949788b MB |
998 | /* Bring us up into D2 so that DAPM starts enabling things */ |
999 | snd_power_change_state(codec->card, SNDRV_CTL_POWER_D2); | |
1000 | ||
87506549 MB |
1001 | if (card->resume_pre) |
1002 | card->resume_pre(pdev); | |
db2a4165 | 1003 | |
87506549 MB |
1004 | for (i = 0; i < card->num_links; i++) { |
1005 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
3efab7dc MB |
1006 | |
1007 | if (card->dai_link[i].ignore_suspend) | |
1008 | continue; | |
1009 | ||
3ba9e10a | 1010 | if (cpu_dai->resume && cpu_dai->ac97_control) |
dc7d7b83 | 1011 | cpu_dai->resume(cpu_dai); |
db2a4165 FM |
1012 | } |
1013 | ||
1547aba9 MB |
1014 | /* If the CODEC was idle over suspend then it will have been |
1015 | * left with bias OFF or STANDBY and suspended so we must now | |
1016 | * resume. Otherwise the suspend was suppressed. | |
1017 | */ | |
1018 | if (codec_dev->resume) { | |
1019 | switch (codec->bias_level) { | |
1020 | case SND_SOC_BIAS_STANDBY: | |
1021 | case SND_SOC_BIAS_OFF: | |
1022 | codec_dev->resume(pdev); | |
1023 | break; | |
1024 | default: | |
1025 | dev_dbg(socdev->dev, "CODEC was on over suspend\n"); | |
1026 | break; | |
1027 | } | |
1028 | } | |
db2a4165 | 1029 | |
3ff3f64b MB |
1030 | for (i = 0; i < codec->num_dai; i++) { |
1031 | char *stream = codec->dai[i].playback.stream_name; | |
3efab7dc MB |
1032 | |
1033 | if (card->dai_link[i].ignore_suspend) | |
1034 | continue; | |
1035 | ||
db2a4165 FM |
1036 | if (stream != NULL) |
1037 | snd_soc_dapm_stream_event(codec, stream, | |
1038 | SND_SOC_DAPM_STREAM_RESUME); | |
1039 | stream = codec->dai[i].capture.stream_name; | |
1040 | if (stream != NULL) | |
1041 | snd_soc_dapm_stream_event(codec, stream, | |
1042 | SND_SOC_DAPM_STREAM_RESUME); | |
1043 | } | |
1044 | ||
3ff3f64b | 1045 | /* unmute any active DACs */ |
dee89c4d MB |
1046 | for (i = 0; i < card->num_links; i++) { |
1047 | struct snd_soc_dai *dai = card->dai_link[i].codec_dai; | |
3efab7dc MB |
1048 | |
1049 | if (card->dai_link[i].ignore_suspend) | |
1050 | continue; | |
1051 | ||
6335d055 EM |
1052 | if (dai->ops->digital_mute && dai->playback.active) |
1053 | dai->ops->digital_mute(dai, 0); | |
db2a4165 FM |
1054 | } |
1055 | ||
87506549 MB |
1056 | for (i = 0; i < card->num_links; i++) { |
1057 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
3efab7dc MB |
1058 | |
1059 | if (card->dai_link[i].ignore_suspend) | |
1060 | continue; | |
1061 | ||
3ba9e10a | 1062 | if (cpu_dai->resume && !cpu_dai->ac97_control) |
dc7d7b83 | 1063 | cpu_dai->resume(cpu_dai); |
db2a4165 | 1064 | if (platform->resume) |
d273ebe7 | 1065 | platform->resume(&card->dai_link[i]); |
db2a4165 FM |
1066 | } |
1067 | ||
87506549 MB |
1068 | if (card->resume_post) |
1069 | card->resume_post(pdev); | |
db2a4165 | 1070 | |
fde22f27 | 1071 | dev_dbg(socdev->dev, "resume work completed\n"); |
6ed25978 AG |
1072 | |
1073 | /* userspace can access us now we are back as we were before */ | |
1074 | snd_power_change_state(codec->card, SNDRV_CTL_POWER_D0); | |
1075 | } | |
1076 | ||
1077 | /* powers up audio subsystem after a suspend */ | |
416356fc | 1078 | static int soc_resume(struct device *dev) |
6ed25978 | 1079 | { |
416356fc | 1080 | struct platform_device *pdev = to_platform_device(dev); |
6ed25978 | 1081 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
6308419a | 1082 | struct snd_soc_card *card = socdev->card; |
64ab9baa | 1083 | struct snd_soc_dai *cpu_dai = card->dai_link[0].cpu_dai; |
6ed25978 | 1084 | |
b9dd94a8 PU |
1085 | /* If the initialization of this soc device failed, there is no codec |
1086 | * associated with it. Just bail out in this case. | |
1087 | */ | |
1088 | if (!card->codec) | |
1089 | return 0; | |
1090 | ||
64ab9baa MB |
1091 | /* AC97 devices might have other drivers hanging off them so |
1092 | * need to resume immediately. Other drivers don't have that | |
1093 | * problem and may take a substantial amount of time to resume | |
1094 | * due to I/O costs and anti-pop so handle them out of line. | |
1095 | */ | |
1096 | if (cpu_dai->ac97_control) { | |
1097 | dev_dbg(socdev->dev, "Resuming AC97 immediately\n"); | |
1098 | soc_resume_deferred(&card->deferred_resume_work); | |
1099 | } else { | |
1100 | dev_dbg(socdev->dev, "Scheduling resume work\n"); | |
1101 | if (!schedule_work(&card->deferred_resume_work)) | |
1102 | dev_err(socdev->dev, "resume work item may be lost\n"); | |
1103 | } | |
6ed25978 | 1104 | |
db2a4165 FM |
1105 | return 0; |
1106 | } | |
db2a4165 FM |
1107 | #else |
1108 | #define soc_suspend NULL | |
1109 | #define soc_resume NULL | |
1110 | #endif | |
1111 | ||
02a06d30 BS |
1112 | static struct snd_soc_dai_ops null_dai_ops = { |
1113 | }; | |
1114 | ||
435c5e25 | 1115 | static void snd_soc_instantiate_card(struct snd_soc_card *card) |
db2a4165 | 1116 | { |
435c5e25 MB |
1117 | struct platform_device *pdev = container_of(card->dev, |
1118 | struct platform_device, | |
1119 | dev); | |
1120 | struct snd_soc_codec_device *codec_dev = card->socdev->codec_dev; | |
fe3e78e0 | 1121 | struct snd_soc_codec *codec; |
435c5e25 MB |
1122 | struct snd_soc_platform *platform; |
1123 | struct snd_soc_dai *dai; | |
6b05eda6 | 1124 | int i, found, ret, ac97; |
435c5e25 MB |
1125 | |
1126 | if (card->instantiated) | |
1127 | return; | |
1128 | ||
1129 | found = 0; | |
1130 | list_for_each_entry(platform, &platform_list, list) | |
1131 | if (card->platform == platform) { | |
1132 | found = 1; | |
1133 | break; | |
1134 | } | |
1135 | if (!found) { | |
1136 | dev_dbg(card->dev, "Platform %s not registered\n", | |
1137 | card->platform->name); | |
1138 | return; | |
1139 | } | |
6308419a | 1140 | |
6b05eda6 | 1141 | ac97 = 0; |
435c5e25 MB |
1142 | for (i = 0; i < card->num_links; i++) { |
1143 | found = 0; | |
1144 | list_for_each_entry(dai, &dai_list, list) | |
1145 | if (card->dai_link[i].cpu_dai == dai) { | |
1146 | found = 1; | |
1147 | break; | |
1148 | } | |
1149 | if (!found) { | |
1150 | dev_dbg(card->dev, "DAI %s not registered\n", | |
1151 | card->dai_link[i].cpu_dai->name); | |
1152 | return; | |
1153 | } | |
6b05eda6 MB |
1154 | |
1155 | if (card->dai_link[i].cpu_dai->ac97_control) | |
1156 | ac97 = 1; | |
c5af3a2e MB |
1157 | } |
1158 | ||
02a06d30 BS |
1159 | for (i = 0; i < card->num_links; i++) { |
1160 | if (!card->dai_link[i].codec_dai->ops) | |
1161 | card->dai_link[i].codec_dai->ops = &null_dai_ops; | |
1162 | } | |
1163 | ||
6b05eda6 MB |
1164 | /* If we have AC97 in the system then don't wait for the |
1165 | * codec. This will need revisiting if we have to handle | |
1166 | * systems with mixed AC97 and non-AC97 parts. Only check for | |
1167 | * DAIs currently; we can't do this per link since some AC97 | |
1168 | * codecs have non-AC97 DAIs. | |
1169 | */ | |
1170 | if (!ac97) | |
1171 | for (i = 0; i < card->num_links; i++) { | |
1172 | found = 0; | |
1173 | list_for_each_entry(dai, &dai_list, list) | |
1174 | if (card->dai_link[i].codec_dai == dai) { | |
1175 | found = 1; | |
1176 | break; | |
1177 | } | |
1178 | if (!found) { | |
1179 | dev_dbg(card->dev, "DAI %s not registered\n", | |
1180 | card->dai_link[i].codec_dai->name); | |
1181 | return; | |
1182 | } | |
1183 | } | |
1184 | ||
435c5e25 MB |
1185 | /* Note that we do not current check for codec components */ |
1186 | ||
1187 | dev_dbg(card->dev, "All components present, instantiating\n"); | |
1188 | ||
1189 | /* Found everything, bring it up */ | |
96dd3622 MB |
1190 | card->pmdown_time = pmdown_time; |
1191 | ||
87506549 MB |
1192 | if (card->probe) { |
1193 | ret = card->probe(pdev); | |
3ff3f64b | 1194 | if (ret < 0) |
435c5e25 | 1195 | return; |
db2a4165 FM |
1196 | } |
1197 | ||
87506549 MB |
1198 | for (i = 0; i < card->num_links; i++) { |
1199 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
db2a4165 | 1200 | if (cpu_dai->probe) { |
bdb92876 | 1201 | ret = cpu_dai->probe(pdev, cpu_dai); |
3ff3f64b | 1202 | if (ret < 0) |
db2a4165 FM |
1203 | goto cpu_dai_err; |
1204 | } | |
1205 | } | |
1206 | ||
1207 | if (codec_dev->probe) { | |
1208 | ret = codec_dev->probe(pdev); | |
3ff3f64b | 1209 | if (ret < 0) |
db2a4165 FM |
1210 | goto cpu_dai_err; |
1211 | } | |
fe3e78e0 | 1212 | codec = card->codec; |
db2a4165 FM |
1213 | |
1214 | if (platform->probe) { | |
1215 | ret = platform->probe(pdev); | |
3ff3f64b | 1216 | if (ret < 0) |
db2a4165 FM |
1217 | goto platform_err; |
1218 | } | |
1219 | ||
1220 | /* DAPM stream work */ | |
6308419a | 1221 | INIT_DELAYED_WORK(&card->delayed_work, close_delayed_work); |
1301a964 | 1222 | #ifdef CONFIG_PM |
6ed25978 | 1223 | /* deferred resume work */ |
6308419a | 1224 | INIT_WORK(&card->deferred_resume_work, soc_resume_deferred); |
1301a964 | 1225 | #endif |
6ed25978 | 1226 | |
fe3e78e0 MB |
1227 | for (i = 0; i < card->num_links; i++) { |
1228 | if (card->dai_link[i].init) { | |
1229 | ret = card->dai_link[i].init(codec); | |
1230 | if (ret < 0) { | |
1231 | printk(KERN_ERR "asoc: failed to init %s\n", | |
1232 | card->dai_link[i].stream_name); | |
1233 | continue; | |
1234 | } | |
1235 | } | |
f7732053 | 1236 | if (card->dai_link[i].codec_dai->ac97_control) |
fe3e78e0 | 1237 | ac97 = 1; |
fe3e78e0 MB |
1238 | } |
1239 | ||
1240 | snprintf(codec->card->shortname, sizeof(codec->card->shortname), | |
1241 | "%s", card->name); | |
1242 | snprintf(codec->card->longname, sizeof(codec->card->longname), | |
1243 | "%s (%s)", card->name, codec->name); | |
1244 | ||
1245 | /* Make sure all DAPM widgets are instantiated */ | |
1246 | snd_soc_dapm_new_widgets(codec); | |
1247 | ||
1248 | ret = snd_card_register(codec->card); | |
1249 | if (ret < 0) { | |
1250 | printk(KERN_ERR "asoc: failed to register soundcard for %s\n", | |
1251 | codec->name); | |
1252 | goto card_err; | |
1253 | } | |
1254 | ||
1255 | mutex_lock(&codec->mutex); | |
1256 | #ifdef CONFIG_SND_SOC_AC97_BUS | |
1257 | /* Only instantiate AC97 if not already done by the adaptor | |
1258 | * for the generic AC97 subsystem. | |
1259 | */ | |
1260 | if (ac97 && strcmp(codec->name, "AC97") != 0) { | |
1261 | ret = soc_ac97_dev_register(codec); | |
1262 | if (ret < 0) { | |
1263 | printk(KERN_ERR "asoc: AC97 device register failed\n"); | |
1264 | snd_card_free(codec->card); | |
1265 | mutex_unlock(&codec->mutex); | |
1266 | goto card_err; | |
1267 | } | |
1268 | } | |
1269 | #endif | |
1270 | ||
1271 | ret = snd_soc_dapm_sys_add(card->socdev->dev); | |
1272 | if (ret < 0) | |
1273 | printk(KERN_WARNING "asoc: failed to add dapm sysfs entries\n"); | |
1274 | ||
dbe21408 MB |
1275 | ret = device_create_file(card->socdev->dev, &dev_attr_pmdown_time); |
1276 | if (ret < 0) | |
1277 | printk(KERN_WARNING "asoc: failed to add pmdown_time sysfs\n"); | |
1278 | ||
fe3e78e0 MB |
1279 | ret = device_create_file(card->socdev->dev, &dev_attr_codec_reg); |
1280 | if (ret < 0) | |
1281 | printk(KERN_WARNING "asoc: failed to add codec sysfs files\n"); | |
1282 | ||
1283 | soc_init_codec_debugfs(codec); | |
1284 | mutex_unlock(&codec->mutex); | |
1285 | ||
435c5e25 MB |
1286 | card->instantiated = 1; |
1287 | ||
1288 | return; | |
db2a4165 | 1289 | |
fe3e78e0 MB |
1290 | card_err: |
1291 | if (platform->remove) | |
1292 | platform->remove(pdev); | |
1293 | ||
db2a4165 FM |
1294 | platform_err: |
1295 | if (codec_dev->remove) | |
1296 | codec_dev->remove(pdev); | |
1297 | ||
1298 | cpu_dai_err: | |
18b9b3d9 | 1299 | for (i--; i >= 0; i--) { |
87506549 | 1300 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; |
db2a4165 | 1301 | if (cpu_dai->remove) |
bdb92876 | 1302 | cpu_dai->remove(pdev, cpu_dai); |
db2a4165 FM |
1303 | } |
1304 | ||
87506549 MB |
1305 | if (card->remove) |
1306 | card->remove(pdev); | |
435c5e25 | 1307 | } |
db2a4165 | 1308 | |
435c5e25 | 1309 | /* |
421f91d2 | 1310 | * Attempt to initialise any uninitialised cards. Must be called with |
435c5e25 MB |
1311 | * client_mutex. |
1312 | */ | |
1313 | static void snd_soc_instantiate_cards(void) | |
1314 | { | |
1315 | struct snd_soc_card *card; | |
1316 | list_for_each_entry(card, &card_list, list) | |
1317 | snd_soc_instantiate_card(card); | |
1318 | } | |
1319 | ||
1320 | /* probes a new socdev */ | |
1321 | static int soc_probe(struct platform_device *pdev) | |
1322 | { | |
1323 | int ret = 0; | |
1324 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
1325 | struct snd_soc_card *card = socdev->card; | |
1326 | ||
1327 | /* Bodge while we push things out of socdev */ | |
1328 | card->socdev = socdev; | |
1329 | ||
1330 | /* Bodge while we unpick instantiation */ | |
1331 | card->dev = &pdev->dev; | |
1332 | ret = snd_soc_register_card(card); | |
1333 | if (ret != 0) { | |
1334 | dev_err(&pdev->dev, "Failed to register card\n"); | |
1335 | return ret; | |
1336 | } | |
1337 | ||
1338 | return 0; | |
db2a4165 FM |
1339 | } |
1340 | ||
1341 | /* removes a socdev */ | |
1342 | static int soc_remove(struct platform_device *pdev) | |
1343 | { | |
1344 | int i; | |
1345 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
87506549 | 1346 | struct snd_soc_card *card = socdev->card; |
87689d56 | 1347 | struct snd_soc_platform *platform = card->platform; |
db2a4165 FM |
1348 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; |
1349 | ||
b2dfa62c GL |
1350 | if (card->instantiated) { |
1351 | run_delayed_work(&card->delayed_work); | |
914dc182 | 1352 | |
b2dfa62c GL |
1353 | if (platform->remove) |
1354 | platform->remove(pdev); | |
965ac42c | 1355 | |
b2dfa62c GL |
1356 | if (codec_dev->remove) |
1357 | codec_dev->remove(pdev); | |
db2a4165 | 1358 | |
b2dfa62c GL |
1359 | for (i = 0; i < card->num_links; i++) { |
1360 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
1361 | if (cpu_dai->remove) | |
1362 | cpu_dai->remove(pdev, cpu_dai); | |
1363 | } | |
db2a4165 | 1364 | |
b2dfa62c GL |
1365 | if (card->remove) |
1366 | card->remove(pdev); | |
db2a4165 FM |
1367 | } |
1368 | ||
c5af3a2e MB |
1369 | snd_soc_unregister_card(card); |
1370 | ||
db2a4165 FM |
1371 | return 0; |
1372 | } | |
1373 | ||
416356fc | 1374 | static int soc_poweroff(struct device *dev) |
51737470 | 1375 | { |
416356fc | 1376 | struct platform_device *pdev = to_platform_device(dev); |
51737470 MB |
1377 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
1378 | struct snd_soc_card *card = socdev->card; | |
1379 | ||
1380 | if (!card->instantiated) | |
416356fc | 1381 | return 0; |
51737470 MB |
1382 | |
1383 | /* Flush out pmdown_time work - we actually do want to run it | |
1384 | * now, we're shutting down so no imminent restart. */ | |
1385 | run_delayed_work(&card->delayed_work); | |
1386 | ||
1387 | snd_soc_dapm_shutdown(socdev); | |
416356fc MB |
1388 | |
1389 | return 0; | |
51737470 MB |
1390 | } |
1391 | ||
47145210 | 1392 | static const struct dev_pm_ops soc_pm_ops = { |
416356fc MB |
1393 | .suspend = soc_suspend, |
1394 | .resume = soc_resume, | |
1395 | .poweroff = soc_poweroff, | |
1396 | }; | |
1397 | ||
db2a4165 FM |
1398 | /* ASoC platform driver */ |
1399 | static struct platform_driver soc_driver = { | |
1400 | .driver = { | |
1401 | .name = "soc-audio", | |
8b45a209 | 1402 | .owner = THIS_MODULE, |
416356fc | 1403 | .pm = &soc_pm_ops, |
db2a4165 FM |
1404 | }, |
1405 | .probe = soc_probe, | |
1406 | .remove = soc_remove, | |
db2a4165 FM |
1407 | }; |
1408 | ||
1409 | /* create a new pcm */ | |
1410 | static int soc_new_pcm(struct snd_soc_device *socdev, | |
1411 | struct snd_soc_dai_link *dai_link, int num) | |
1412 | { | |
87689d56 | 1413 | struct snd_soc_card *card = socdev->card; |
6627a653 | 1414 | struct snd_soc_codec *codec = card->codec; |
87689d56 | 1415 | struct snd_soc_platform *platform = card->platform; |
3c4b266f LG |
1416 | struct snd_soc_dai *codec_dai = dai_link->codec_dai; |
1417 | struct snd_soc_dai *cpu_dai = dai_link->cpu_dai; | |
db2a4165 FM |
1418 | struct snd_soc_pcm_runtime *rtd; |
1419 | struct snd_pcm *pcm; | |
1420 | char new_name[64]; | |
1421 | int ret = 0, playback = 0, capture = 0; | |
1422 | ||
1423 | rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime), GFP_KERNEL); | |
1424 | if (rtd == NULL) | |
1425 | return -ENOMEM; | |
cb666e5b LG |
1426 | |
1427 | rtd->dai = dai_link; | |
db2a4165 | 1428 | rtd->socdev = socdev; |
6627a653 | 1429 | codec_dai->codec = card->codec; |
db2a4165 FM |
1430 | |
1431 | /* check client and interface hw capabilities */ | |
40ca1142 MB |
1432 | snprintf(new_name, sizeof(new_name), "%s %s-%d", |
1433 | dai_link->stream_name, codec_dai->name, num); | |
db2a4165 FM |
1434 | |
1435 | if (codec_dai->playback.channels_min) | |
1436 | playback = 1; | |
1437 | if (codec_dai->capture.channels_min) | |
1438 | capture = 1; | |
1439 | ||
1440 | ret = snd_pcm_new(codec->card, new_name, codec->pcm_devs++, playback, | |
1441 | capture, &pcm); | |
1442 | if (ret < 0) { | |
3ff3f64b MB |
1443 | printk(KERN_ERR "asoc: can't create pcm for codec %s\n", |
1444 | codec->name); | |
db2a4165 FM |
1445 | kfree(rtd); |
1446 | return ret; | |
1447 | } | |
1448 | ||
4ccab3e7 | 1449 | dai_link->pcm = pcm; |
db2a4165 | 1450 | pcm->private_data = rtd; |
87689d56 | 1451 | soc_pcm_ops.mmap = platform->pcm_ops->mmap; |
87689d56 MB |
1452 | soc_pcm_ops.ioctl = platform->pcm_ops->ioctl; |
1453 | soc_pcm_ops.copy = platform->pcm_ops->copy; | |
1454 | soc_pcm_ops.silence = platform->pcm_ops->silence; | |
1455 | soc_pcm_ops.ack = platform->pcm_ops->ack; | |
1456 | soc_pcm_ops.page = platform->pcm_ops->page; | |
db2a4165 FM |
1457 | |
1458 | if (playback) | |
1459 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &soc_pcm_ops); | |
1460 | ||
1461 | if (capture) | |
1462 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &soc_pcm_ops); | |
1463 | ||
87689d56 | 1464 | ret = platform->pcm_new(codec->card, codec_dai, pcm); |
db2a4165 FM |
1465 | if (ret < 0) { |
1466 | printk(KERN_ERR "asoc: platform pcm constructor failed\n"); | |
1467 | kfree(rtd); | |
1468 | return ret; | |
1469 | } | |
1470 | ||
87689d56 | 1471 | pcm->private_free = platform->pcm_free; |
db2a4165 FM |
1472 | printk(KERN_INFO "asoc: %s <-> %s mapping ok\n", codec_dai->name, |
1473 | cpu_dai->name); | |
1474 | return ret; | |
1475 | } | |
1476 | ||
096e49d5 MB |
1477 | /** |
1478 | * snd_soc_codec_volatile_register: Report if a register is volatile. | |
1479 | * | |
1480 | * @codec: CODEC to query. | |
1481 | * @reg: Register to query. | |
1482 | * | |
1483 | * Boolean function indiciating if a CODEC register is volatile. | |
1484 | */ | |
1485 | int snd_soc_codec_volatile_register(struct snd_soc_codec *codec, int reg) | |
1486 | { | |
1487 | if (codec->volatile_register) | |
1488 | return codec->volatile_register(reg); | |
1489 | else | |
1490 | return 0; | |
1491 | } | |
1492 | EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register); | |
1493 | ||
db2a4165 FM |
1494 | /** |
1495 | * snd_soc_new_ac97_codec - initailise AC97 device | |
1496 | * @codec: audio codec | |
1497 | * @ops: AC97 bus operations | |
1498 | * @num: AC97 codec number | |
1499 | * | |
1500 | * Initialises AC97 codec resources for use by ad-hoc devices only. | |
1501 | */ | |
1502 | int snd_soc_new_ac97_codec(struct snd_soc_codec *codec, | |
1503 | struct snd_ac97_bus_ops *ops, int num) | |
1504 | { | |
1505 | mutex_lock(&codec->mutex); | |
1506 | ||
1507 | codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL); | |
1508 | if (codec->ac97 == NULL) { | |
1509 | mutex_unlock(&codec->mutex); | |
1510 | return -ENOMEM; | |
1511 | } | |
1512 | ||
1513 | codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL); | |
1514 | if (codec->ac97->bus == NULL) { | |
1515 | kfree(codec->ac97); | |
1516 | codec->ac97 = NULL; | |
1517 | mutex_unlock(&codec->mutex); | |
1518 | return -ENOMEM; | |
1519 | } | |
1520 | ||
1521 | codec->ac97->bus->ops = ops; | |
1522 | codec->ac97->num = num; | |
2718625f | 1523 | codec->dev = &codec->ac97->dev; |
db2a4165 FM |
1524 | mutex_unlock(&codec->mutex); |
1525 | return 0; | |
1526 | } | |
1527 | EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec); | |
1528 | ||
1529 | /** | |
1530 | * snd_soc_free_ac97_codec - free AC97 codec device | |
1531 | * @codec: audio codec | |
1532 | * | |
1533 | * Frees AC97 codec device resources. | |
1534 | */ | |
1535 | void snd_soc_free_ac97_codec(struct snd_soc_codec *codec) | |
1536 | { | |
1537 | mutex_lock(&codec->mutex); | |
1538 | kfree(codec->ac97->bus); | |
1539 | kfree(codec->ac97); | |
1540 | codec->ac97 = NULL; | |
1541 | mutex_unlock(&codec->mutex); | |
1542 | } | |
1543 | EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec); | |
1544 | ||
1545 | /** | |
1546 | * snd_soc_update_bits - update codec register bits | |
1547 | * @codec: audio codec | |
1548 | * @reg: codec register | |
1549 | * @mask: register mask | |
1550 | * @value: new value | |
1551 | * | |
1552 | * Writes new register value. | |
1553 | * | |
1554 | * Returns 1 for change else 0. | |
1555 | */ | |
1556 | int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg, | |
46f5822f | 1557 | unsigned int mask, unsigned int value) |
db2a4165 FM |
1558 | { |
1559 | int change; | |
46f5822f | 1560 | unsigned int old, new; |
db2a4165 | 1561 | |
db2a4165 FM |
1562 | old = snd_soc_read(codec, reg); |
1563 | new = (old & ~mask) | value; | |
1564 | change = old != new; | |
1565 | if (change) | |
1566 | snd_soc_write(codec, reg, new); | |
1567 | ||
db2a4165 FM |
1568 | return change; |
1569 | } | |
1570 | EXPORT_SYMBOL_GPL(snd_soc_update_bits); | |
1571 | ||
6c508c62 EN |
1572 | /** |
1573 | * snd_soc_update_bits_locked - update codec register bits | |
1574 | * @codec: audio codec | |
1575 | * @reg: codec register | |
1576 | * @mask: register mask | |
1577 | * @value: new value | |
1578 | * | |
1579 | * Writes new register value, and takes the codec mutex. | |
1580 | * | |
1581 | * Returns 1 for change else 0. | |
1582 | */ | |
dd1b3d53 MB |
1583 | int snd_soc_update_bits_locked(struct snd_soc_codec *codec, |
1584 | unsigned short reg, unsigned int mask, | |
1585 | unsigned int value) | |
6c508c62 EN |
1586 | { |
1587 | int change; | |
1588 | ||
1589 | mutex_lock(&codec->mutex); | |
1590 | change = snd_soc_update_bits(codec, reg, mask, value); | |
1591 | mutex_unlock(&codec->mutex); | |
1592 | ||
1593 | return change; | |
1594 | } | |
dd1b3d53 | 1595 | EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked); |
6c508c62 | 1596 | |
db2a4165 FM |
1597 | /** |
1598 | * snd_soc_test_bits - test register for change | |
1599 | * @codec: audio codec | |
1600 | * @reg: codec register | |
1601 | * @mask: register mask | |
1602 | * @value: new value | |
1603 | * | |
1604 | * Tests a register with a new value and checks if the new value is | |
1605 | * different from the old value. | |
1606 | * | |
1607 | * Returns 1 for change else 0. | |
1608 | */ | |
1609 | int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg, | |
46f5822f | 1610 | unsigned int mask, unsigned int value) |
db2a4165 FM |
1611 | { |
1612 | int change; | |
46f5822f | 1613 | unsigned int old, new; |
db2a4165 | 1614 | |
db2a4165 FM |
1615 | old = snd_soc_read(codec, reg); |
1616 | new = (old & ~mask) | value; | |
1617 | change = old != new; | |
db2a4165 FM |
1618 | |
1619 | return change; | |
1620 | } | |
1621 | EXPORT_SYMBOL_GPL(snd_soc_test_bits); | |
1622 | ||
db2a4165 FM |
1623 | /** |
1624 | * snd_soc_new_pcms - create new sound card and pcms | |
1625 | * @socdev: the SoC audio device | |
ac11a2b3 MB |
1626 | * @idx: ALSA card index |
1627 | * @xid: card identification | |
db2a4165 FM |
1628 | * |
1629 | * Create a new sound card based upon the codec and interface pcms. | |
1630 | * | |
1631 | * Returns 0 for success, else error. | |
1632 | */ | |
bc7320c5 | 1633 | int snd_soc_new_pcms(struct snd_soc_device *socdev, int idx, const char *xid) |
db2a4165 | 1634 | { |
87506549 | 1635 | struct snd_soc_card *card = socdev->card; |
6627a653 | 1636 | struct snd_soc_codec *codec = card->codec; |
bd7dd77c | 1637 | int ret, i; |
db2a4165 FM |
1638 | |
1639 | mutex_lock(&codec->mutex); | |
1640 | ||
1641 | /* register a sound card */ | |
bd7dd77c TI |
1642 | ret = snd_card_create(idx, xid, codec->owner, 0, &codec->card); |
1643 | if (ret < 0) { | |
db2a4165 FM |
1644 | printk(KERN_ERR "asoc: can't create sound card for codec %s\n", |
1645 | codec->name); | |
1646 | mutex_unlock(&codec->mutex); | |
bd7dd77c | 1647 | return ret; |
db2a4165 FM |
1648 | } |
1649 | ||
452c5eaa | 1650 | codec->socdev = socdev; |
db2a4165 FM |
1651 | codec->card->dev = socdev->dev; |
1652 | codec->card->private_data = codec; | |
1653 | strncpy(codec->card->driver, codec->name, sizeof(codec->card->driver)); | |
1654 | ||
1655 | /* create the pcms */ | |
87506549 MB |
1656 | for (i = 0; i < card->num_links; i++) { |
1657 | ret = soc_new_pcm(socdev, &card->dai_link[i], i); | |
db2a4165 FM |
1658 | if (ret < 0) { |
1659 | printk(KERN_ERR "asoc: can't create pcm %s\n", | |
87506549 | 1660 | card->dai_link[i].stream_name); |
db2a4165 FM |
1661 | mutex_unlock(&codec->mutex); |
1662 | return ret; | |
1663 | } | |
fb48e3c6 GG |
1664 | /* Check for codec->ac97 to handle the ac97.c fun */ |
1665 | if (card->dai_link[i].codec_dai->ac97_control && codec->ac97) { | |
f7732053 BS |
1666 | snd_ac97_dev_add_pdata(codec->ac97, |
1667 | card->dai_link[i].cpu_dai->ac97_pdata); | |
1668 | } | |
db2a4165 FM |
1669 | } |
1670 | ||
1671 | mutex_unlock(&codec->mutex); | |
1672 | return ret; | |
1673 | } | |
1674 | EXPORT_SYMBOL_GPL(snd_soc_new_pcms); | |
1675 | ||
db2a4165 FM |
1676 | /** |
1677 | * snd_soc_free_pcms - free sound card and pcms | |
1678 | * @socdev: the SoC audio device | |
1679 | * | |
1680 | * Frees sound card and pcms associated with the socdev. | |
1681 | * Also unregister the codec if it is an AC97 device. | |
1682 | */ | |
1683 | void snd_soc_free_pcms(struct snd_soc_device *socdev) | |
1684 | { | |
6627a653 | 1685 | struct snd_soc_codec *codec = socdev->card->codec; |
a68660e0 | 1686 | #ifdef CONFIG_SND_SOC_AC97_BUS |
3c4b266f | 1687 | struct snd_soc_dai *codec_dai; |
a68660e0 LG |
1688 | int i; |
1689 | #endif | |
db2a4165 FM |
1690 | |
1691 | mutex_lock(&codec->mutex); | |
6627a653 | 1692 | soc_cleanup_codec_debugfs(codec); |
db2a4165 | 1693 | #ifdef CONFIG_SND_SOC_AC97_BUS |
3ff3f64b | 1694 | for (i = 0; i < codec->num_dai; i++) { |
a68660e0 | 1695 | codec_dai = &codec->dai[i]; |
d2314e0e AN |
1696 | if (codec_dai->ac97_control && codec->ac97 && |
1697 | strcmp(codec->name, "AC97") != 0) { | |
a68660e0 LG |
1698 | soc_ac97_dev_unregister(codec); |
1699 | goto free_card; | |
1700 | } | |
1701 | } | |
1702 | free_card: | |
db2a4165 FM |
1703 | #endif |
1704 | ||
1705 | if (codec->card) | |
1706 | snd_card_free(codec->card); | |
1707 | device_remove_file(socdev->dev, &dev_attr_codec_reg); | |
1708 | mutex_unlock(&codec->mutex); | |
1709 | } | |
1710 | EXPORT_SYMBOL_GPL(snd_soc_free_pcms); | |
1711 | ||
1712 | /** | |
1713 | * snd_soc_set_runtime_hwparams - set the runtime hardware parameters | |
1714 | * @substream: the pcm substream | |
1715 | * @hw: the hardware parameters | |
1716 | * | |
1717 | * Sets the substream runtime hardware parameters. | |
1718 | */ | |
1719 | int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream, | |
1720 | const struct snd_pcm_hardware *hw) | |
1721 | { | |
1722 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1723 | runtime->hw.info = hw->info; | |
1724 | runtime->hw.formats = hw->formats; | |
1725 | runtime->hw.period_bytes_min = hw->period_bytes_min; | |
1726 | runtime->hw.period_bytes_max = hw->period_bytes_max; | |
1727 | runtime->hw.periods_min = hw->periods_min; | |
1728 | runtime->hw.periods_max = hw->periods_max; | |
1729 | runtime->hw.buffer_bytes_max = hw->buffer_bytes_max; | |
1730 | runtime->hw.fifo_size = hw->fifo_size; | |
1731 | return 0; | |
1732 | } | |
1733 | EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams); | |
1734 | ||
1735 | /** | |
1736 | * snd_soc_cnew - create new control | |
1737 | * @_template: control template | |
1738 | * @data: control private data | |
ac11a2b3 | 1739 | * @long_name: control long name |
db2a4165 FM |
1740 | * |
1741 | * Create a new mixer control from a template control. | |
1742 | * | |
1743 | * Returns 0 for success, else error. | |
1744 | */ | |
1745 | struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template, | |
1746 | void *data, char *long_name) | |
1747 | { | |
1748 | struct snd_kcontrol_new template; | |
1749 | ||
1750 | memcpy(&template, _template, sizeof(template)); | |
1751 | if (long_name) | |
1752 | template.name = long_name; | |
db2a4165 FM |
1753 | template.index = 0; |
1754 | ||
1755 | return snd_ctl_new1(&template, data); | |
1756 | } | |
1757 | EXPORT_SYMBOL_GPL(snd_soc_cnew); | |
1758 | ||
3e8e1952 IM |
1759 | /** |
1760 | * snd_soc_add_controls - add an array of controls to a codec. | |
1761 | * Convienience function to add a list of controls. Many codecs were | |
1762 | * duplicating this code. | |
1763 | * | |
1764 | * @codec: codec to add controls to | |
1765 | * @controls: array of controls to add | |
1766 | * @num_controls: number of elements in the array | |
1767 | * | |
1768 | * Return 0 for success, else error. | |
1769 | */ | |
1770 | int snd_soc_add_controls(struct snd_soc_codec *codec, | |
1771 | const struct snd_kcontrol_new *controls, int num_controls) | |
1772 | { | |
1773 | struct snd_card *card = codec->card; | |
1774 | int err, i; | |
1775 | ||
1776 | for (i = 0; i < num_controls; i++) { | |
1777 | const struct snd_kcontrol_new *control = &controls[i]; | |
1778 | err = snd_ctl_add(card, snd_soc_cnew(control, codec, NULL)); | |
1779 | if (err < 0) { | |
1780 | dev_err(codec->dev, "%s: Failed to add %s\n", | |
1781 | codec->name, control->name); | |
1782 | return err; | |
1783 | } | |
1784 | } | |
1785 | ||
1786 | return 0; | |
1787 | } | |
1788 | EXPORT_SYMBOL_GPL(snd_soc_add_controls); | |
1789 | ||
db2a4165 FM |
1790 | /** |
1791 | * snd_soc_info_enum_double - enumerated double mixer info callback | |
1792 | * @kcontrol: mixer control | |
1793 | * @uinfo: control element information | |
1794 | * | |
1795 | * Callback to provide information about a double enumerated | |
1796 | * mixer control. | |
1797 | * | |
1798 | * Returns 0 for success. | |
1799 | */ | |
1800 | int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol, | |
1801 | struct snd_ctl_elem_info *uinfo) | |
1802 | { | |
1803 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1804 | ||
1805 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; | |
1806 | uinfo->count = e->shift_l == e->shift_r ? 1 : 2; | |
f8ba0b7b | 1807 | uinfo->value.enumerated.items = e->max; |
db2a4165 | 1808 | |
f8ba0b7b JS |
1809 | if (uinfo->value.enumerated.item > e->max - 1) |
1810 | uinfo->value.enumerated.item = e->max - 1; | |
db2a4165 FM |
1811 | strcpy(uinfo->value.enumerated.name, |
1812 | e->texts[uinfo->value.enumerated.item]); | |
1813 | return 0; | |
1814 | } | |
1815 | EXPORT_SYMBOL_GPL(snd_soc_info_enum_double); | |
1816 | ||
1817 | /** | |
1818 | * snd_soc_get_enum_double - enumerated double mixer get callback | |
1819 | * @kcontrol: mixer control | |
ac11a2b3 | 1820 | * @ucontrol: control element information |
db2a4165 FM |
1821 | * |
1822 | * Callback to get the value of a double enumerated mixer. | |
1823 | * | |
1824 | * Returns 0 for success. | |
1825 | */ | |
1826 | int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol, | |
1827 | struct snd_ctl_elem_value *ucontrol) | |
1828 | { | |
1829 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1830 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
46f5822f | 1831 | unsigned int val, bitmask; |
db2a4165 | 1832 | |
f8ba0b7b | 1833 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
db2a4165 FM |
1834 | ; |
1835 | val = snd_soc_read(codec, e->reg); | |
3ff3f64b MB |
1836 | ucontrol->value.enumerated.item[0] |
1837 | = (val >> e->shift_l) & (bitmask - 1); | |
db2a4165 FM |
1838 | if (e->shift_l != e->shift_r) |
1839 | ucontrol->value.enumerated.item[1] = | |
1840 | (val >> e->shift_r) & (bitmask - 1); | |
1841 | ||
1842 | return 0; | |
1843 | } | |
1844 | EXPORT_SYMBOL_GPL(snd_soc_get_enum_double); | |
1845 | ||
1846 | /** | |
1847 | * snd_soc_put_enum_double - enumerated double mixer put callback | |
1848 | * @kcontrol: mixer control | |
ac11a2b3 | 1849 | * @ucontrol: control element information |
db2a4165 FM |
1850 | * |
1851 | * Callback to set the value of a double enumerated mixer. | |
1852 | * | |
1853 | * Returns 0 for success. | |
1854 | */ | |
1855 | int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol, | |
1856 | struct snd_ctl_elem_value *ucontrol) | |
1857 | { | |
1858 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1859 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
46f5822f DR |
1860 | unsigned int val; |
1861 | unsigned int mask, bitmask; | |
db2a4165 | 1862 | |
f8ba0b7b | 1863 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
db2a4165 | 1864 | ; |
f8ba0b7b | 1865 | if (ucontrol->value.enumerated.item[0] > e->max - 1) |
db2a4165 FM |
1866 | return -EINVAL; |
1867 | val = ucontrol->value.enumerated.item[0] << e->shift_l; | |
1868 | mask = (bitmask - 1) << e->shift_l; | |
1869 | if (e->shift_l != e->shift_r) { | |
f8ba0b7b | 1870 | if (ucontrol->value.enumerated.item[1] > e->max - 1) |
db2a4165 FM |
1871 | return -EINVAL; |
1872 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
1873 | mask |= (bitmask - 1) << e->shift_r; | |
1874 | } | |
1875 | ||
6c508c62 | 1876 | return snd_soc_update_bits_locked(codec, e->reg, mask, val); |
db2a4165 FM |
1877 | } |
1878 | EXPORT_SYMBOL_GPL(snd_soc_put_enum_double); | |
1879 | ||
2e72f8e3 PU |
1880 | /** |
1881 | * snd_soc_get_value_enum_double - semi enumerated double mixer get callback | |
1882 | * @kcontrol: mixer control | |
1883 | * @ucontrol: control element information | |
1884 | * | |
1885 | * Callback to get the value of a double semi enumerated mixer. | |
1886 | * | |
1887 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
1888 | * used for handling bitfield coded enumeration for example. | |
1889 | * | |
1890 | * Returns 0 for success. | |
1891 | */ | |
1892 | int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol, | |
1893 | struct snd_ctl_elem_value *ucontrol) | |
1894 | { | |
1895 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
74155556 | 1896 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f | 1897 | unsigned int reg_val, val, mux; |
2e72f8e3 PU |
1898 | |
1899 | reg_val = snd_soc_read(codec, e->reg); | |
1900 | val = (reg_val >> e->shift_l) & e->mask; | |
1901 | for (mux = 0; mux < e->max; mux++) { | |
1902 | if (val == e->values[mux]) | |
1903 | break; | |
1904 | } | |
1905 | ucontrol->value.enumerated.item[0] = mux; | |
1906 | if (e->shift_l != e->shift_r) { | |
1907 | val = (reg_val >> e->shift_r) & e->mask; | |
1908 | for (mux = 0; mux < e->max; mux++) { | |
1909 | if (val == e->values[mux]) | |
1910 | break; | |
1911 | } | |
1912 | ucontrol->value.enumerated.item[1] = mux; | |
1913 | } | |
1914 | ||
1915 | return 0; | |
1916 | } | |
1917 | EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double); | |
1918 | ||
1919 | /** | |
1920 | * snd_soc_put_value_enum_double - semi enumerated double mixer put callback | |
1921 | * @kcontrol: mixer control | |
1922 | * @ucontrol: control element information | |
1923 | * | |
1924 | * Callback to set the value of a double semi enumerated mixer. | |
1925 | * | |
1926 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
1927 | * used for handling bitfield coded enumeration for example. | |
1928 | * | |
1929 | * Returns 0 for success. | |
1930 | */ | |
1931 | int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol, | |
1932 | struct snd_ctl_elem_value *ucontrol) | |
1933 | { | |
1934 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
74155556 | 1935 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f DR |
1936 | unsigned int val; |
1937 | unsigned int mask; | |
2e72f8e3 PU |
1938 | |
1939 | if (ucontrol->value.enumerated.item[0] > e->max - 1) | |
1940 | return -EINVAL; | |
1941 | val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l; | |
1942 | mask = e->mask << e->shift_l; | |
1943 | if (e->shift_l != e->shift_r) { | |
1944 | if (ucontrol->value.enumerated.item[1] > e->max - 1) | |
1945 | return -EINVAL; | |
1946 | val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r; | |
1947 | mask |= e->mask << e->shift_r; | |
1948 | } | |
1949 | ||
6c508c62 | 1950 | return snd_soc_update_bits_locked(codec, e->reg, mask, val); |
2e72f8e3 PU |
1951 | } |
1952 | EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double); | |
1953 | ||
db2a4165 FM |
1954 | /** |
1955 | * snd_soc_info_enum_ext - external enumerated single mixer info callback | |
1956 | * @kcontrol: mixer control | |
1957 | * @uinfo: control element information | |
1958 | * | |
1959 | * Callback to provide information about an external enumerated | |
1960 | * single mixer. | |
1961 | * | |
1962 | * Returns 0 for success. | |
1963 | */ | |
1964 | int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol, | |
1965 | struct snd_ctl_elem_info *uinfo) | |
1966 | { | |
1967 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1968 | ||
1969 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; | |
1970 | uinfo->count = 1; | |
f8ba0b7b | 1971 | uinfo->value.enumerated.items = e->max; |
db2a4165 | 1972 | |
f8ba0b7b JS |
1973 | if (uinfo->value.enumerated.item > e->max - 1) |
1974 | uinfo->value.enumerated.item = e->max - 1; | |
db2a4165 FM |
1975 | strcpy(uinfo->value.enumerated.name, |
1976 | e->texts[uinfo->value.enumerated.item]); | |
1977 | return 0; | |
1978 | } | |
1979 | EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext); | |
1980 | ||
1981 | /** | |
1982 | * snd_soc_info_volsw_ext - external single mixer info callback | |
1983 | * @kcontrol: mixer control | |
1984 | * @uinfo: control element information | |
1985 | * | |
1986 | * Callback to provide information about a single external mixer control. | |
1987 | * | |
1988 | * Returns 0 for success. | |
1989 | */ | |
1990 | int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol, | |
1991 | struct snd_ctl_elem_info *uinfo) | |
1992 | { | |
a7a4ac86 PZ |
1993 | int max = kcontrol->private_value; |
1994 | ||
fd5dfad9 | 1995 | if (max == 1 && !strstr(kcontrol->id.name, " Volume")) |
a7a4ac86 PZ |
1996 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; |
1997 | else | |
1998 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
db2a4165 | 1999 | |
db2a4165 FM |
2000 | uinfo->count = 1; |
2001 | uinfo->value.integer.min = 0; | |
a7a4ac86 | 2002 | uinfo->value.integer.max = max; |
db2a4165 FM |
2003 | return 0; |
2004 | } | |
2005 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext); | |
2006 | ||
db2a4165 FM |
2007 | /** |
2008 | * snd_soc_info_volsw - single mixer info callback | |
2009 | * @kcontrol: mixer control | |
2010 | * @uinfo: control element information | |
2011 | * | |
2012 | * Callback to provide information about a single mixer control. | |
2013 | * | |
2014 | * Returns 0 for success. | |
2015 | */ | |
2016 | int snd_soc_info_volsw(struct snd_kcontrol *kcontrol, | |
2017 | struct snd_ctl_elem_info *uinfo) | |
2018 | { | |
4eaa9819 JS |
2019 | struct soc_mixer_control *mc = |
2020 | (struct soc_mixer_control *)kcontrol->private_value; | |
d11bb4a9 | 2021 | int platform_max; |
762b8df7 | 2022 | unsigned int shift = mc->shift; |
815ecf8d | 2023 | unsigned int rshift = mc->rshift; |
db2a4165 | 2024 | |
d11bb4a9 PU |
2025 | if (!mc->platform_max) |
2026 | mc->platform_max = mc->max; | |
2027 | platform_max = mc->platform_max; | |
2028 | ||
2029 | if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume")) | |
a7a4ac86 PZ |
2030 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; |
2031 | else | |
2032 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
2033 | ||
db2a4165 FM |
2034 | uinfo->count = shift == rshift ? 1 : 2; |
2035 | uinfo->value.integer.min = 0; | |
d11bb4a9 | 2036 | uinfo->value.integer.max = platform_max; |
db2a4165 FM |
2037 | return 0; |
2038 | } | |
2039 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw); | |
2040 | ||
2041 | /** | |
2042 | * snd_soc_get_volsw - single mixer get callback | |
2043 | * @kcontrol: mixer control | |
ac11a2b3 | 2044 | * @ucontrol: control element information |
db2a4165 FM |
2045 | * |
2046 | * Callback to get the value of a single mixer control. | |
2047 | * | |
2048 | * Returns 0 for success. | |
2049 | */ | |
2050 | int snd_soc_get_volsw(struct snd_kcontrol *kcontrol, | |
2051 | struct snd_ctl_elem_value *ucontrol) | |
2052 | { | |
4eaa9819 JS |
2053 | struct soc_mixer_control *mc = |
2054 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 2055 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
2056 | unsigned int reg = mc->reg; |
2057 | unsigned int shift = mc->shift; | |
2058 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 2059 | int max = mc->max; |
815ecf8d JS |
2060 | unsigned int mask = (1 << fls(max)) - 1; |
2061 | unsigned int invert = mc->invert; | |
db2a4165 FM |
2062 | |
2063 | ucontrol->value.integer.value[0] = | |
2064 | (snd_soc_read(codec, reg) >> shift) & mask; | |
2065 | if (shift != rshift) | |
2066 | ucontrol->value.integer.value[1] = | |
2067 | (snd_soc_read(codec, reg) >> rshift) & mask; | |
2068 | if (invert) { | |
2069 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 2070 | max - ucontrol->value.integer.value[0]; |
db2a4165 FM |
2071 | if (shift != rshift) |
2072 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 2073 | max - ucontrol->value.integer.value[1]; |
db2a4165 FM |
2074 | } |
2075 | ||
2076 | return 0; | |
2077 | } | |
2078 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw); | |
2079 | ||
2080 | /** | |
2081 | * snd_soc_put_volsw - single mixer put callback | |
2082 | * @kcontrol: mixer control | |
ac11a2b3 | 2083 | * @ucontrol: control element information |
db2a4165 FM |
2084 | * |
2085 | * Callback to set the value of a single mixer control. | |
2086 | * | |
2087 | * Returns 0 for success. | |
2088 | */ | |
2089 | int snd_soc_put_volsw(struct snd_kcontrol *kcontrol, | |
2090 | struct snd_ctl_elem_value *ucontrol) | |
2091 | { | |
4eaa9819 JS |
2092 | struct soc_mixer_control *mc = |
2093 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 2094 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
2095 | unsigned int reg = mc->reg; |
2096 | unsigned int shift = mc->shift; | |
2097 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 2098 | int max = mc->max; |
815ecf8d JS |
2099 | unsigned int mask = (1 << fls(max)) - 1; |
2100 | unsigned int invert = mc->invert; | |
46f5822f | 2101 | unsigned int val, val2, val_mask; |
db2a4165 FM |
2102 | |
2103 | val = (ucontrol->value.integer.value[0] & mask); | |
2104 | if (invert) | |
a7a4ac86 | 2105 | val = max - val; |
db2a4165 FM |
2106 | val_mask = mask << shift; |
2107 | val = val << shift; | |
2108 | if (shift != rshift) { | |
2109 | val2 = (ucontrol->value.integer.value[1] & mask); | |
2110 | if (invert) | |
a7a4ac86 | 2111 | val2 = max - val2; |
db2a4165 FM |
2112 | val_mask |= mask << rshift; |
2113 | val |= val2 << rshift; | |
2114 | } | |
6c508c62 | 2115 | return snd_soc_update_bits_locked(codec, reg, val_mask, val); |
db2a4165 FM |
2116 | } |
2117 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw); | |
2118 | ||
2119 | /** | |
2120 | * snd_soc_info_volsw_2r - double mixer info callback | |
2121 | * @kcontrol: mixer control | |
2122 | * @uinfo: control element information | |
2123 | * | |
2124 | * Callback to provide information about a double mixer control that | |
2125 | * spans 2 codec registers. | |
2126 | * | |
2127 | * Returns 0 for success. | |
2128 | */ | |
2129 | int snd_soc_info_volsw_2r(struct snd_kcontrol *kcontrol, | |
2130 | struct snd_ctl_elem_info *uinfo) | |
2131 | { | |
4eaa9819 JS |
2132 | struct soc_mixer_control *mc = |
2133 | (struct soc_mixer_control *)kcontrol->private_value; | |
d11bb4a9 | 2134 | int platform_max; |
a7a4ac86 | 2135 | |
d11bb4a9 PU |
2136 | if (!mc->platform_max) |
2137 | mc->platform_max = mc->max; | |
2138 | platform_max = mc->platform_max; | |
2139 | ||
2140 | if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume")) | |
a7a4ac86 PZ |
2141 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; |
2142 | else | |
2143 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
db2a4165 | 2144 | |
db2a4165 FM |
2145 | uinfo->count = 2; |
2146 | uinfo->value.integer.min = 0; | |
d11bb4a9 | 2147 | uinfo->value.integer.max = platform_max; |
db2a4165 FM |
2148 | return 0; |
2149 | } | |
2150 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r); | |
2151 | ||
2152 | /** | |
2153 | * snd_soc_get_volsw_2r - double mixer get callback | |
2154 | * @kcontrol: mixer control | |
ac11a2b3 | 2155 | * @ucontrol: control element information |
db2a4165 FM |
2156 | * |
2157 | * Callback to get the value of a double mixer control that spans 2 registers. | |
2158 | * | |
2159 | * Returns 0 for success. | |
2160 | */ | |
2161 | int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol, | |
2162 | struct snd_ctl_elem_value *ucontrol) | |
2163 | { | |
4eaa9819 JS |
2164 | struct soc_mixer_control *mc = |
2165 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 2166 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
2167 | unsigned int reg = mc->reg; |
2168 | unsigned int reg2 = mc->rreg; | |
2169 | unsigned int shift = mc->shift; | |
4eaa9819 | 2170 | int max = mc->max; |
46f5822f | 2171 | unsigned int mask = (1 << fls(max)) - 1; |
815ecf8d | 2172 | unsigned int invert = mc->invert; |
db2a4165 FM |
2173 | |
2174 | ucontrol->value.integer.value[0] = | |
2175 | (snd_soc_read(codec, reg) >> shift) & mask; | |
2176 | ucontrol->value.integer.value[1] = | |
2177 | (snd_soc_read(codec, reg2) >> shift) & mask; | |
2178 | if (invert) { | |
2179 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 2180 | max - ucontrol->value.integer.value[0]; |
db2a4165 | 2181 | ucontrol->value.integer.value[1] = |
a7a4ac86 | 2182 | max - ucontrol->value.integer.value[1]; |
db2a4165 FM |
2183 | } |
2184 | ||
2185 | return 0; | |
2186 | } | |
2187 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r); | |
2188 | ||
2189 | /** | |
2190 | * snd_soc_put_volsw_2r - double mixer set callback | |
2191 | * @kcontrol: mixer control | |
ac11a2b3 | 2192 | * @ucontrol: control element information |
db2a4165 FM |
2193 | * |
2194 | * Callback to set the value of a double mixer control that spans 2 registers. | |
2195 | * | |
2196 | * Returns 0 for success. | |
2197 | */ | |
2198 | int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol, | |
2199 | struct snd_ctl_elem_value *ucontrol) | |
2200 | { | |
4eaa9819 JS |
2201 | struct soc_mixer_control *mc = |
2202 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 2203 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
2204 | unsigned int reg = mc->reg; |
2205 | unsigned int reg2 = mc->rreg; | |
2206 | unsigned int shift = mc->shift; | |
4eaa9819 | 2207 | int max = mc->max; |
815ecf8d JS |
2208 | unsigned int mask = (1 << fls(max)) - 1; |
2209 | unsigned int invert = mc->invert; | |
db2a4165 | 2210 | int err; |
46f5822f | 2211 | unsigned int val, val2, val_mask; |
db2a4165 FM |
2212 | |
2213 | val_mask = mask << shift; | |
2214 | val = (ucontrol->value.integer.value[0] & mask); | |
2215 | val2 = (ucontrol->value.integer.value[1] & mask); | |
2216 | ||
2217 | if (invert) { | |
a7a4ac86 PZ |
2218 | val = max - val; |
2219 | val2 = max - val2; | |
db2a4165 FM |
2220 | } |
2221 | ||
2222 | val = val << shift; | |
2223 | val2 = val2 << shift; | |
2224 | ||
6c508c62 | 2225 | err = snd_soc_update_bits_locked(codec, reg, val_mask, val); |
3ff3f64b | 2226 | if (err < 0) |
db2a4165 FM |
2227 | return err; |
2228 | ||
6c508c62 | 2229 | err = snd_soc_update_bits_locked(codec, reg2, val_mask, val2); |
db2a4165 FM |
2230 | return err; |
2231 | } | |
2232 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r); | |
2233 | ||
e13ac2e9 MB |
2234 | /** |
2235 | * snd_soc_info_volsw_s8 - signed mixer info callback | |
2236 | * @kcontrol: mixer control | |
2237 | * @uinfo: control element information | |
2238 | * | |
2239 | * Callback to provide information about a signed mixer control. | |
2240 | * | |
2241 | * Returns 0 for success. | |
2242 | */ | |
2243 | int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol, | |
2244 | struct snd_ctl_elem_info *uinfo) | |
2245 | { | |
4eaa9819 JS |
2246 | struct soc_mixer_control *mc = |
2247 | (struct soc_mixer_control *)kcontrol->private_value; | |
d11bb4a9 | 2248 | int platform_max; |
4eaa9819 | 2249 | int min = mc->min; |
e13ac2e9 | 2250 | |
d11bb4a9 PU |
2251 | if (!mc->platform_max) |
2252 | mc->platform_max = mc->max; | |
2253 | platform_max = mc->platform_max; | |
2254 | ||
e13ac2e9 MB |
2255 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
2256 | uinfo->count = 2; | |
2257 | uinfo->value.integer.min = 0; | |
d11bb4a9 | 2258 | uinfo->value.integer.max = platform_max - min; |
e13ac2e9 MB |
2259 | return 0; |
2260 | } | |
2261 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8); | |
2262 | ||
2263 | /** | |
2264 | * snd_soc_get_volsw_s8 - signed mixer get callback | |
2265 | * @kcontrol: mixer control | |
ac11a2b3 | 2266 | * @ucontrol: control element information |
e13ac2e9 MB |
2267 | * |
2268 | * Callback to get the value of a signed mixer control. | |
2269 | * | |
2270 | * Returns 0 for success. | |
2271 | */ | |
2272 | int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol, | |
2273 | struct snd_ctl_elem_value *ucontrol) | |
2274 | { | |
4eaa9819 JS |
2275 | struct soc_mixer_control *mc = |
2276 | (struct soc_mixer_control *)kcontrol->private_value; | |
e13ac2e9 | 2277 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d | 2278 | unsigned int reg = mc->reg; |
4eaa9819 | 2279 | int min = mc->min; |
e13ac2e9 MB |
2280 | int val = snd_soc_read(codec, reg); |
2281 | ||
2282 | ucontrol->value.integer.value[0] = | |
2283 | ((signed char)(val & 0xff))-min; | |
2284 | ucontrol->value.integer.value[1] = | |
2285 | ((signed char)((val >> 8) & 0xff))-min; | |
2286 | return 0; | |
2287 | } | |
2288 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8); | |
2289 | ||
2290 | /** | |
2291 | * snd_soc_put_volsw_sgn - signed mixer put callback | |
2292 | * @kcontrol: mixer control | |
ac11a2b3 | 2293 | * @ucontrol: control element information |
e13ac2e9 MB |
2294 | * |
2295 | * Callback to set the value of a signed mixer control. | |
2296 | * | |
2297 | * Returns 0 for success. | |
2298 | */ | |
2299 | int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol, | |
2300 | struct snd_ctl_elem_value *ucontrol) | |
2301 | { | |
4eaa9819 JS |
2302 | struct soc_mixer_control *mc = |
2303 | (struct soc_mixer_control *)kcontrol->private_value; | |
e13ac2e9 | 2304 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d | 2305 | unsigned int reg = mc->reg; |
4eaa9819 | 2306 | int min = mc->min; |
46f5822f | 2307 | unsigned int val; |
e13ac2e9 MB |
2308 | |
2309 | val = (ucontrol->value.integer.value[0]+min) & 0xff; | |
2310 | val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8; | |
2311 | ||
6c508c62 | 2312 | return snd_soc_update_bits_locked(codec, reg, 0xffff, val); |
e13ac2e9 MB |
2313 | } |
2314 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8); | |
2315 | ||
637d3847 PU |
2316 | /** |
2317 | * snd_soc_limit_volume - Set new limit to an existing volume control. | |
2318 | * | |
2319 | * @codec: where to look for the control | |
2320 | * @name: Name of the control | |
2321 | * @max: new maximum limit | |
2322 | * | |
2323 | * Return 0 for success, else error. | |
2324 | */ | |
2325 | int snd_soc_limit_volume(struct snd_soc_codec *codec, | |
2326 | const char *name, int max) | |
2327 | { | |
2328 | struct snd_card *card = codec->card; | |
2329 | struct snd_kcontrol *kctl; | |
2330 | struct soc_mixer_control *mc; | |
2331 | int found = 0; | |
2332 | int ret = -EINVAL; | |
2333 | ||
2334 | /* Sanity check for name and max */ | |
2335 | if (unlikely(!name || max <= 0)) | |
2336 | return -EINVAL; | |
2337 | ||
2338 | list_for_each_entry(kctl, &card->controls, list) { | |
2339 | if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) { | |
2340 | found = 1; | |
2341 | break; | |
2342 | } | |
2343 | } | |
2344 | if (found) { | |
2345 | mc = (struct soc_mixer_control *)kctl->private_value; | |
2346 | if (max <= mc->max) { | |
d11bb4a9 | 2347 | mc->platform_max = max; |
637d3847 PU |
2348 | ret = 0; |
2349 | } | |
2350 | } | |
2351 | return ret; | |
2352 | } | |
2353 | EXPORT_SYMBOL_GPL(snd_soc_limit_volume); | |
2354 | ||
8c6529db LG |
2355 | /** |
2356 | * snd_soc_dai_set_sysclk - configure DAI system or master clock. | |
2357 | * @dai: DAI | |
2358 | * @clk_id: DAI specific clock ID | |
2359 | * @freq: new clock frequency in Hz | |
2360 | * @dir: new clock direction - input/output. | |
2361 | * | |
2362 | * Configures the DAI master (MCLK) or system (SYSCLK) clocking. | |
2363 | */ | |
2364 | int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id, | |
2365 | unsigned int freq, int dir) | |
2366 | { | |
3f1a4d82 | 2367 | if (dai->ops && dai->ops->set_sysclk) |
6335d055 | 2368 | return dai->ops->set_sysclk(dai, clk_id, freq, dir); |
8c6529db LG |
2369 | else |
2370 | return -EINVAL; | |
2371 | } | |
2372 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk); | |
2373 | ||
2374 | /** | |
2375 | * snd_soc_dai_set_clkdiv - configure DAI clock dividers. | |
2376 | * @dai: DAI | |
ac11a2b3 | 2377 | * @div_id: DAI specific clock divider ID |
8c6529db LG |
2378 | * @div: new clock divisor. |
2379 | * | |
2380 | * Configures the clock dividers. This is used to derive the best DAI bit and | |
2381 | * frame clocks from the system or master clock. It's best to set the DAI bit | |
2382 | * and frame clocks as low as possible to save system power. | |
2383 | */ | |
2384 | int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai, | |
2385 | int div_id, int div) | |
2386 | { | |
3f1a4d82 | 2387 | if (dai->ops && dai->ops->set_clkdiv) |
6335d055 | 2388 | return dai->ops->set_clkdiv(dai, div_id, div); |
8c6529db LG |
2389 | else |
2390 | return -EINVAL; | |
2391 | } | |
2392 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv); | |
2393 | ||
2394 | /** | |
2395 | * snd_soc_dai_set_pll - configure DAI PLL. | |
2396 | * @dai: DAI | |
2397 | * @pll_id: DAI specific PLL ID | |
85488037 | 2398 | * @source: DAI specific source for the PLL |
8c6529db LG |
2399 | * @freq_in: PLL input clock frequency in Hz |
2400 | * @freq_out: requested PLL output clock frequency in Hz | |
2401 | * | |
2402 | * Configures and enables PLL to generate output clock based on input clock. | |
2403 | */ | |
85488037 MB |
2404 | int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source, |
2405 | unsigned int freq_in, unsigned int freq_out) | |
8c6529db | 2406 | { |
3f1a4d82 | 2407 | if (dai->ops && dai->ops->set_pll) |
85488037 MB |
2408 | return dai->ops->set_pll(dai, pll_id, source, |
2409 | freq_in, freq_out); | |
8c6529db LG |
2410 | else |
2411 | return -EINVAL; | |
2412 | } | |
2413 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll); | |
2414 | ||
2415 | /** | |
2416 | * snd_soc_dai_set_fmt - configure DAI hardware audio format. | |
2417 | * @dai: DAI | |
8c6529db LG |
2418 | * @fmt: SND_SOC_DAIFMT_ format value. |
2419 | * | |
2420 | * Configures the DAI hardware format and clocking. | |
2421 | */ | |
2422 | int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) | |
2423 | { | |
3f1a4d82 | 2424 | if (dai->ops && dai->ops->set_fmt) |
6335d055 | 2425 | return dai->ops->set_fmt(dai, fmt); |
8c6529db LG |
2426 | else |
2427 | return -EINVAL; | |
2428 | } | |
2429 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt); | |
2430 | ||
2431 | /** | |
2432 | * snd_soc_dai_set_tdm_slot - configure DAI TDM. | |
2433 | * @dai: DAI | |
a5479e38 DR |
2434 | * @tx_mask: bitmask representing active TX slots. |
2435 | * @rx_mask: bitmask representing active RX slots. | |
8c6529db | 2436 | * @slots: Number of slots in use. |
a5479e38 | 2437 | * @slot_width: Width in bits for each slot. |
8c6529db LG |
2438 | * |
2439 | * Configures a DAI for TDM operation. Both mask and slots are codec and DAI | |
2440 | * specific. | |
2441 | */ | |
2442 | int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai, | |
a5479e38 | 2443 | unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width) |
8c6529db | 2444 | { |
3f1a4d82 | 2445 | if (dai->ops && dai->ops->set_tdm_slot) |
a5479e38 DR |
2446 | return dai->ops->set_tdm_slot(dai, tx_mask, rx_mask, |
2447 | slots, slot_width); | |
8c6529db LG |
2448 | else |
2449 | return -EINVAL; | |
2450 | } | |
2451 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot); | |
2452 | ||
472df3cb BS |
2453 | /** |
2454 | * snd_soc_dai_set_channel_map - configure DAI audio channel map | |
2455 | * @dai: DAI | |
2456 | * @tx_num: how many TX channels | |
2457 | * @tx_slot: pointer to an array which imply the TX slot number channel | |
2458 | * 0~num-1 uses | |
2459 | * @rx_num: how many RX channels | |
2460 | * @rx_slot: pointer to an array which imply the RX slot number channel | |
2461 | * 0~num-1 uses | |
2462 | * | |
2463 | * configure the relationship between channel number and TDM slot number. | |
2464 | */ | |
2465 | int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai, | |
2466 | unsigned int tx_num, unsigned int *tx_slot, | |
2467 | unsigned int rx_num, unsigned int *rx_slot) | |
2468 | { | |
2469 | if (dai->ops && dai->ops->set_channel_map) | |
2470 | return dai->ops->set_channel_map(dai, tx_num, tx_slot, | |
2471 | rx_num, rx_slot); | |
2472 | else | |
2473 | return -EINVAL; | |
2474 | } | |
2475 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map); | |
2476 | ||
8c6529db LG |
2477 | /** |
2478 | * snd_soc_dai_set_tristate - configure DAI system or master clock. | |
2479 | * @dai: DAI | |
2480 | * @tristate: tristate enable | |
2481 | * | |
2482 | * Tristates the DAI so that others can use it. | |
2483 | */ | |
2484 | int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate) | |
2485 | { | |
3f1a4d82 | 2486 | if (dai->ops && dai->ops->set_tristate) |
6335d055 | 2487 | return dai->ops->set_tristate(dai, tristate); |
8c6529db LG |
2488 | else |
2489 | return -EINVAL; | |
2490 | } | |
2491 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate); | |
2492 | ||
2493 | /** | |
2494 | * snd_soc_dai_digital_mute - configure DAI system or master clock. | |
2495 | * @dai: DAI | |
2496 | * @mute: mute enable | |
2497 | * | |
2498 | * Mutes the DAI DAC. | |
2499 | */ | |
2500 | int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute) | |
2501 | { | |
3f1a4d82 | 2502 | if (dai->ops && dai->ops->digital_mute) |
6335d055 | 2503 | return dai->ops->digital_mute(dai, mute); |
8c6529db LG |
2504 | else |
2505 | return -EINVAL; | |
2506 | } | |
2507 | EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute); | |
2508 | ||
c5af3a2e MB |
2509 | /** |
2510 | * snd_soc_register_card - Register a card with the ASoC core | |
2511 | * | |
ac11a2b3 | 2512 | * @card: Card to register |
c5af3a2e MB |
2513 | * |
2514 | * Note that currently this is an internal only function: it will be | |
2515 | * exposed to machine drivers after further backporting of ASoC v2 | |
2516 | * registration APIs. | |
2517 | */ | |
2518 | static int snd_soc_register_card(struct snd_soc_card *card) | |
2519 | { | |
2520 | if (!card->name || !card->dev) | |
2521 | return -EINVAL; | |
2522 | ||
2523 | INIT_LIST_HEAD(&card->list); | |
2524 | card->instantiated = 0; | |
2525 | ||
2526 | mutex_lock(&client_mutex); | |
2527 | list_add(&card->list, &card_list); | |
435c5e25 | 2528 | snd_soc_instantiate_cards(); |
c5af3a2e MB |
2529 | mutex_unlock(&client_mutex); |
2530 | ||
2531 | dev_dbg(card->dev, "Registered card '%s'\n", card->name); | |
2532 | ||
2533 | return 0; | |
2534 | } | |
2535 | ||
2536 | /** | |
2537 | * snd_soc_unregister_card - Unregister a card with the ASoC core | |
2538 | * | |
ac11a2b3 | 2539 | * @card: Card to unregister |
c5af3a2e MB |
2540 | * |
2541 | * Note that currently this is an internal only function: it will be | |
2542 | * exposed to machine drivers after further backporting of ASoC v2 | |
2543 | * registration APIs. | |
2544 | */ | |
2545 | static int snd_soc_unregister_card(struct snd_soc_card *card) | |
2546 | { | |
2547 | mutex_lock(&client_mutex); | |
2548 | list_del(&card->list); | |
2549 | mutex_unlock(&client_mutex); | |
2550 | ||
2551 | dev_dbg(card->dev, "Unregistered card '%s'\n", card->name); | |
2552 | ||
2553 | return 0; | |
2554 | } | |
2555 | ||
9115171a MB |
2556 | /** |
2557 | * snd_soc_register_dai - Register a DAI with the ASoC core | |
2558 | * | |
ac11a2b3 | 2559 | * @dai: DAI to register |
9115171a MB |
2560 | */ |
2561 | int snd_soc_register_dai(struct snd_soc_dai *dai) | |
2562 | { | |
2563 | if (!dai->name) | |
2564 | return -EINVAL; | |
2565 | ||
2566 | /* The device should become mandatory over time */ | |
2567 | if (!dai->dev) | |
2568 | printk(KERN_WARNING "No device for DAI %s\n", dai->name); | |
2569 | ||
6335d055 EM |
2570 | if (!dai->ops) |
2571 | dai->ops = &null_dai_ops; | |
2572 | ||
9115171a MB |
2573 | INIT_LIST_HEAD(&dai->list); |
2574 | ||
2575 | mutex_lock(&client_mutex); | |
2576 | list_add(&dai->list, &dai_list); | |
435c5e25 | 2577 | snd_soc_instantiate_cards(); |
9115171a MB |
2578 | mutex_unlock(&client_mutex); |
2579 | ||
2580 | pr_debug("Registered DAI '%s'\n", dai->name); | |
2581 | ||
2582 | return 0; | |
2583 | } | |
2584 | EXPORT_SYMBOL_GPL(snd_soc_register_dai); | |
2585 | ||
2586 | /** | |
2587 | * snd_soc_unregister_dai - Unregister a DAI from the ASoC core | |
2588 | * | |
ac11a2b3 | 2589 | * @dai: DAI to unregister |
9115171a MB |
2590 | */ |
2591 | void snd_soc_unregister_dai(struct snd_soc_dai *dai) | |
2592 | { | |
2593 | mutex_lock(&client_mutex); | |
2594 | list_del(&dai->list); | |
2595 | mutex_unlock(&client_mutex); | |
2596 | ||
2597 | pr_debug("Unregistered DAI '%s'\n", dai->name); | |
2598 | } | |
2599 | EXPORT_SYMBOL_GPL(snd_soc_unregister_dai); | |
2600 | ||
2601 | /** | |
2602 | * snd_soc_register_dais - Register multiple DAIs with the ASoC core | |
2603 | * | |
ac11a2b3 MB |
2604 | * @dai: Array of DAIs to register |
2605 | * @count: Number of DAIs | |
9115171a MB |
2606 | */ |
2607 | int snd_soc_register_dais(struct snd_soc_dai *dai, size_t count) | |
2608 | { | |
2609 | int i, ret; | |
2610 | ||
2611 | for (i = 0; i < count; i++) { | |
2612 | ret = snd_soc_register_dai(&dai[i]); | |
2613 | if (ret != 0) | |
2614 | goto err; | |
2615 | } | |
2616 | ||
2617 | return 0; | |
2618 | ||
2619 | err: | |
2620 | for (i--; i >= 0; i--) | |
2621 | snd_soc_unregister_dai(&dai[i]); | |
2622 | ||
2623 | return ret; | |
2624 | } | |
2625 | EXPORT_SYMBOL_GPL(snd_soc_register_dais); | |
2626 | ||
2627 | /** | |
2628 | * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core | |
2629 | * | |
ac11a2b3 MB |
2630 | * @dai: Array of DAIs to unregister |
2631 | * @count: Number of DAIs | |
9115171a MB |
2632 | */ |
2633 | void snd_soc_unregister_dais(struct snd_soc_dai *dai, size_t count) | |
2634 | { | |
2635 | int i; | |
2636 | ||
2637 | for (i = 0; i < count; i++) | |
2638 | snd_soc_unregister_dai(&dai[i]); | |
2639 | } | |
2640 | EXPORT_SYMBOL_GPL(snd_soc_unregister_dais); | |
2641 | ||
12a48a8c MB |
2642 | /** |
2643 | * snd_soc_register_platform - Register a platform with the ASoC core | |
2644 | * | |
ac11a2b3 | 2645 | * @platform: platform to register |
12a48a8c MB |
2646 | */ |
2647 | int snd_soc_register_platform(struct snd_soc_platform *platform) | |
2648 | { | |
2649 | if (!platform->name) | |
2650 | return -EINVAL; | |
2651 | ||
2652 | INIT_LIST_HEAD(&platform->list); | |
2653 | ||
2654 | mutex_lock(&client_mutex); | |
2655 | list_add(&platform->list, &platform_list); | |
435c5e25 | 2656 | snd_soc_instantiate_cards(); |
12a48a8c MB |
2657 | mutex_unlock(&client_mutex); |
2658 | ||
2659 | pr_debug("Registered platform '%s'\n", platform->name); | |
2660 | ||
2661 | return 0; | |
2662 | } | |
2663 | EXPORT_SYMBOL_GPL(snd_soc_register_platform); | |
2664 | ||
2665 | /** | |
2666 | * snd_soc_unregister_platform - Unregister a platform from the ASoC core | |
2667 | * | |
ac11a2b3 | 2668 | * @platform: platform to unregister |
12a48a8c MB |
2669 | */ |
2670 | void snd_soc_unregister_platform(struct snd_soc_platform *platform) | |
2671 | { | |
2672 | mutex_lock(&client_mutex); | |
2673 | list_del(&platform->list); | |
2674 | mutex_unlock(&client_mutex); | |
2675 | ||
2676 | pr_debug("Unregistered platform '%s'\n", platform->name); | |
2677 | } | |
2678 | EXPORT_SYMBOL_GPL(snd_soc_unregister_platform); | |
2679 | ||
151ab22c MB |
2680 | static u64 codec_format_map[] = { |
2681 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE, | |
2682 | SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE, | |
2683 | SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE, | |
2684 | SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_U24_BE, | |
2685 | SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE, | |
2686 | SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_U32_BE, | |
2687 | SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_U24_3BE, | |
2688 | SNDRV_PCM_FMTBIT_U24_3LE | SNDRV_PCM_FMTBIT_U24_3BE, | |
2689 | SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE, | |
2690 | SNDRV_PCM_FMTBIT_U20_3LE | SNDRV_PCM_FMTBIT_U20_3BE, | |
2691 | SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE, | |
2692 | SNDRV_PCM_FMTBIT_U18_3LE | SNDRV_PCM_FMTBIT_U18_3BE, | |
2693 | SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE, | |
2694 | SNDRV_PCM_FMTBIT_FLOAT64_LE | SNDRV_PCM_FMTBIT_FLOAT64_BE, | |
2695 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE | |
2696 | | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE, | |
2697 | }; | |
2698 | ||
2699 | /* Fix up the DAI formats for endianness: codecs don't actually see | |
2700 | * the endianness of the data but we're using the CPU format | |
2701 | * definitions which do need to include endianness so we ensure that | |
2702 | * codec DAIs always have both big and little endian variants set. | |
2703 | */ | |
2704 | static void fixup_codec_formats(struct snd_soc_pcm_stream *stream) | |
2705 | { | |
2706 | int i; | |
2707 | ||
2708 | for (i = 0; i < ARRAY_SIZE(codec_format_map); i++) | |
2709 | if (stream->formats & codec_format_map[i]) | |
2710 | stream->formats |= codec_format_map[i]; | |
2711 | } | |
2712 | ||
0d0cf00a MB |
2713 | /** |
2714 | * snd_soc_register_codec - Register a codec with the ASoC core | |
2715 | * | |
ac11a2b3 | 2716 | * @codec: codec to register |
0d0cf00a MB |
2717 | */ |
2718 | int snd_soc_register_codec(struct snd_soc_codec *codec) | |
2719 | { | |
151ab22c MB |
2720 | int i; |
2721 | ||
0d0cf00a MB |
2722 | if (!codec->name) |
2723 | return -EINVAL; | |
2724 | ||
2725 | /* The device should become mandatory over time */ | |
2726 | if (!codec->dev) | |
2727 | printk(KERN_WARNING "No device for codec %s\n", codec->name); | |
2728 | ||
2729 | INIT_LIST_HEAD(&codec->list); | |
2730 | ||
151ab22c MB |
2731 | for (i = 0; i < codec->num_dai; i++) { |
2732 | fixup_codec_formats(&codec->dai[i].playback); | |
2733 | fixup_codec_formats(&codec->dai[i].capture); | |
2734 | } | |
2735 | ||
0d0cf00a MB |
2736 | mutex_lock(&client_mutex); |
2737 | list_add(&codec->list, &codec_list); | |
2738 | snd_soc_instantiate_cards(); | |
2739 | mutex_unlock(&client_mutex); | |
2740 | ||
2741 | pr_debug("Registered codec '%s'\n", codec->name); | |
2742 | ||
2743 | return 0; | |
2744 | } | |
2745 | EXPORT_SYMBOL_GPL(snd_soc_register_codec); | |
2746 | ||
2747 | /** | |
2748 | * snd_soc_unregister_codec - Unregister a codec from the ASoC core | |
2749 | * | |
ac11a2b3 | 2750 | * @codec: codec to unregister |
0d0cf00a MB |
2751 | */ |
2752 | void snd_soc_unregister_codec(struct snd_soc_codec *codec) | |
2753 | { | |
2754 | mutex_lock(&client_mutex); | |
2755 | list_del(&codec->list); | |
2756 | mutex_unlock(&client_mutex); | |
2757 | ||
2758 | pr_debug("Unregistered codec '%s'\n", codec->name); | |
2759 | } | |
2760 | EXPORT_SYMBOL_GPL(snd_soc_unregister_codec); | |
2761 | ||
c9b3a40f | 2762 | static int __init snd_soc_init(void) |
db2a4165 | 2763 | { |
384c89e2 MB |
2764 | #ifdef CONFIG_DEBUG_FS |
2765 | debugfs_root = debugfs_create_dir("asoc", NULL); | |
2766 | if (IS_ERR(debugfs_root) || !debugfs_root) { | |
2767 | printk(KERN_WARNING | |
2768 | "ASoC: Failed to create debugfs directory\n"); | |
2769 | debugfs_root = NULL; | |
2770 | } | |
2771 | #endif | |
2772 | ||
db2a4165 FM |
2773 | return platform_driver_register(&soc_driver); |
2774 | } | |
2775 | ||
7d8c16a6 | 2776 | static void __exit snd_soc_exit(void) |
db2a4165 | 2777 | { |
384c89e2 MB |
2778 | #ifdef CONFIG_DEBUG_FS |
2779 | debugfs_remove_recursive(debugfs_root); | |
2780 | #endif | |
3ff3f64b | 2781 | platform_driver_unregister(&soc_driver); |
db2a4165 FM |
2782 | } |
2783 | ||
2784 | module_init(snd_soc_init); | |
2785 | module_exit(snd_soc_exit); | |
2786 | ||
2787 | /* Module information */ | |
d331124d | 2788 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
db2a4165 FM |
2789 | MODULE_DESCRIPTION("ALSA SoC Core"); |
2790 | MODULE_LICENSE("GPL"); | |
8b45a209 | 2791 | MODULE_ALIAS("platform:soc-audio"); |