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Commit | Line | Data |
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db2a4165 FM |
1 | /* |
2 | * soc-core.c -- ALSA SoC Audio Layer | |
3 | * | |
4 | * Copyright 2005 Wolfson Microelectronics PLC. | |
0664d888 LG |
5 | * Copyright 2005 Openedhand Ltd. |
6 | * | |
d331124d | 7 | * Author: Liam Girdwood <lrg@slimlogic.co.uk> |
0664d888 LG |
8 | * with code, comments and ideas from :- |
9 | * Richard Purdie <richard@openedhand.com> | |
db2a4165 FM |
10 | * |
11 | * This program is free software; you can redistribute it and/or modify it | |
12 | * under the terms of the GNU General Public License as published by the | |
13 | * Free Software Foundation; either version 2 of the License, or (at your | |
14 | * option) any later version. | |
15 | * | |
db2a4165 FM |
16 | * TODO: |
17 | * o Add hw rules to enforce rates, etc. | |
18 | * o More testing with other codecs/machines. | |
19 | * o Add more codecs and platforms to ensure good API coverage. | |
20 | * o Support TDM on PCM and I2S | |
21 | */ | |
22 | ||
23 | #include <linux/module.h> | |
24 | #include <linux/moduleparam.h> | |
25 | #include <linux/init.h> | |
26 | #include <linux/delay.h> | |
27 | #include <linux/pm.h> | |
28 | #include <linux/bitops.h> | |
12ef193d | 29 | #include <linux/debugfs.h> |
db2a4165 | 30 | #include <linux/platform_device.h> |
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 | { | |
5164d74d | 87 | int ret, i, step = 1, count = 0; |
2624d5fa MB |
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 | ||
5164d74d | 104 | if (codec->display_register) { |
2624d5fa MB |
105 | count += codec->display_register(codec, buf + count, |
106 | PAGE_SIZE - count, i); | |
5164d74d MB |
107 | } else { |
108 | /* If the read fails it's almost certainly due to | |
109 | * the register being volatile and the device being | |
110 | * powered off. | |
111 | */ | |
112 | ret = codec->read(codec, i); | |
113 | if (ret >= 0) | |
114 | count += snprintf(buf + count, | |
115 | PAGE_SIZE - count, | |
116 | "%4x", ret); | |
117 | else | |
118 | count += snprintf(buf + count, | |
119 | PAGE_SIZE - count, | |
120 | "<no data: %d>", ret); | |
121 | } | |
2624d5fa MB |
122 | |
123 | if (count >= PAGE_SIZE - 1) | |
124 | break; | |
125 | ||
126 | count += snprintf(buf + count, PAGE_SIZE - count, "\n"); | |
127 | if (count >= PAGE_SIZE - 1) | |
128 | break; | |
129 | } | |
130 | ||
131 | /* Truncate count; min() would cause a warning */ | |
132 | if (count >= PAGE_SIZE) | |
133 | count = PAGE_SIZE - 1; | |
134 | ||
135 | return count; | |
136 | } | |
137 | static ssize_t codec_reg_show(struct device *dev, | |
138 | struct device_attribute *attr, char *buf) | |
139 | { | |
140 | struct snd_soc_device *devdata = dev_get_drvdata(dev); | |
141 | return soc_codec_reg_show(devdata->card->codec, buf); | |
142 | } | |
143 | ||
144 | static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL); | |
145 | ||
dbe21408 MB |
146 | static ssize_t pmdown_time_show(struct device *dev, |
147 | struct device_attribute *attr, char *buf) | |
148 | { | |
149 | struct snd_soc_device *socdev = dev_get_drvdata(dev); | |
150 | struct snd_soc_card *card = socdev->card; | |
151 | ||
6c5f1fed | 152 | return sprintf(buf, "%ld\n", card->pmdown_time); |
dbe21408 MB |
153 | } |
154 | ||
155 | static ssize_t pmdown_time_set(struct device *dev, | |
156 | struct device_attribute *attr, | |
157 | const char *buf, size_t count) | |
158 | { | |
159 | struct snd_soc_device *socdev = dev_get_drvdata(dev); | |
160 | struct snd_soc_card *card = socdev->card; | |
161 | ||
162 | strict_strtol(buf, 10, &card->pmdown_time); | |
163 | ||
164 | return count; | |
165 | } | |
166 | ||
167 | static DEVICE_ATTR(pmdown_time, 0644, pmdown_time_show, pmdown_time_set); | |
168 | ||
2624d5fa MB |
169 | #ifdef CONFIG_DEBUG_FS |
170 | static int codec_reg_open_file(struct inode *inode, struct file *file) | |
171 | { | |
172 | file->private_data = inode->i_private; | |
173 | return 0; | |
174 | } | |
175 | ||
176 | static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf, | |
177 | size_t count, loff_t *ppos) | |
178 | { | |
179 | ssize_t ret; | |
180 | struct snd_soc_codec *codec = file->private_data; | |
181 | char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL); | |
182 | if (!buf) | |
183 | return -ENOMEM; | |
184 | ret = soc_codec_reg_show(codec, buf); | |
185 | if (ret >= 0) | |
186 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); | |
187 | kfree(buf); | |
188 | return ret; | |
189 | } | |
190 | ||
191 | static ssize_t codec_reg_write_file(struct file *file, | |
192 | const char __user *user_buf, size_t count, loff_t *ppos) | |
193 | { | |
194 | char buf[32]; | |
195 | int buf_size; | |
196 | char *start = buf; | |
197 | unsigned long reg, value; | |
198 | int step = 1; | |
199 | struct snd_soc_codec *codec = file->private_data; | |
200 | ||
201 | buf_size = min(count, (sizeof(buf)-1)); | |
202 | if (copy_from_user(buf, user_buf, buf_size)) | |
203 | return -EFAULT; | |
204 | buf[buf_size] = 0; | |
205 | ||
206 | if (codec->reg_cache_step) | |
207 | step = codec->reg_cache_step; | |
208 | ||
209 | while (*start == ' ') | |
210 | start++; | |
211 | reg = simple_strtoul(start, &start, 16); | |
212 | if ((reg >= codec->reg_cache_size) || (reg % step)) | |
213 | return -EINVAL; | |
214 | while (*start == ' ') | |
215 | start++; | |
216 | if (strict_strtoul(start, 16, &value)) | |
217 | return -EINVAL; | |
218 | codec->write(codec, reg, value); | |
219 | return buf_size; | |
220 | } | |
221 | ||
222 | static const struct file_operations codec_reg_fops = { | |
223 | .open = codec_reg_open_file, | |
224 | .read = codec_reg_read_file, | |
225 | .write = codec_reg_write_file, | |
226 | }; | |
227 | ||
228 | static void soc_init_codec_debugfs(struct snd_soc_codec *codec) | |
229 | { | |
230 | char codec_root[128]; | |
231 | ||
232 | if (codec->dev) | |
233 | snprintf(codec_root, sizeof(codec_root), | |
234 | "%s.%s", codec->name, dev_name(codec->dev)); | |
235 | else | |
236 | snprintf(codec_root, sizeof(codec_root), | |
237 | "%s", codec->name); | |
238 | ||
239 | codec->debugfs_codec_root = debugfs_create_dir(codec_root, | |
240 | debugfs_root); | |
241 | if (!codec->debugfs_codec_root) { | |
242 | printk(KERN_WARNING | |
243 | "ASoC: Failed to create codec debugfs directory\n"); | |
244 | return; | |
245 | } | |
246 | ||
247 | codec->debugfs_reg = debugfs_create_file("codec_reg", 0644, | |
248 | codec->debugfs_codec_root, | |
249 | codec, &codec_reg_fops); | |
250 | if (!codec->debugfs_reg) | |
251 | printk(KERN_WARNING | |
252 | "ASoC: Failed to create codec register debugfs file\n"); | |
253 | ||
708fafb3 | 254 | codec->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0644, |
2624d5fa MB |
255 | codec->debugfs_codec_root, |
256 | &codec->pop_time); | |
257 | if (!codec->debugfs_pop_time) | |
258 | printk(KERN_WARNING | |
259 | "Failed to create pop time debugfs file\n"); | |
260 | ||
261 | codec->debugfs_dapm = debugfs_create_dir("dapm", | |
262 | codec->debugfs_codec_root); | |
263 | if (!codec->debugfs_dapm) | |
264 | printk(KERN_WARNING | |
265 | "Failed to create DAPM debugfs directory\n"); | |
266 | ||
267 | snd_soc_dapm_debugfs_init(codec); | |
268 | } | |
269 | ||
270 | static void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec) | |
271 | { | |
272 | debugfs_remove_recursive(codec->debugfs_codec_root); | |
273 | } | |
274 | ||
275 | #else | |
276 | ||
277 | static inline void soc_init_codec_debugfs(struct snd_soc_codec *codec) | |
278 | { | |
279 | } | |
280 | ||
281 | static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec) | |
282 | { | |
283 | } | |
284 | #endif | |
285 | ||
db2a4165 FM |
286 | #ifdef CONFIG_SND_SOC_AC97_BUS |
287 | /* unregister ac97 codec */ | |
288 | static int soc_ac97_dev_unregister(struct snd_soc_codec *codec) | |
289 | { | |
290 | if (codec->ac97->dev.bus) | |
291 | device_unregister(&codec->ac97->dev); | |
292 | return 0; | |
293 | } | |
294 | ||
295 | /* stop no dev release warning */ | |
296 | static void soc_ac97_device_release(struct device *dev){} | |
297 | ||
298 | /* register ac97 codec to bus */ | |
299 | static int soc_ac97_dev_register(struct snd_soc_codec *codec) | |
300 | { | |
301 | int err; | |
302 | ||
303 | codec->ac97->dev.bus = &ac97_bus_type; | |
4ac5c61f | 304 | codec->ac97->dev.parent = codec->card->dev; |
db2a4165 FM |
305 | codec->ac97->dev.release = soc_ac97_device_release; |
306 | ||
bb072bf0 KS |
307 | dev_set_name(&codec->ac97->dev, "%d-%d:%s", |
308 | codec->card->number, 0, codec->name); | |
db2a4165 FM |
309 | err = device_register(&codec->ac97->dev); |
310 | if (err < 0) { | |
311 | snd_printk(KERN_ERR "Can't register ac97 bus\n"); | |
312 | codec->ac97->dev.bus = NULL; | |
313 | return err; | |
314 | } | |
315 | return 0; | |
316 | } | |
317 | #endif | |
318 | ||
06f409d7 MB |
319 | static int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream) |
320 | { | |
321 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
322 | struct snd_soc_device *socdev = rtd->socdev; | |
323 | struct snd_soc_card *card = socdev->card; | |
324 | struct snd_soc_dai_link *machine = rtd->dai; | |
325 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; | |
326 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
327 | int ret; | |
328 | ||
329 | if (codec_dai->symmetric_rates || cpu_dai->symmetric_rates || | |
330 | machine->symmetric_rates) { | |
50831450 | 331 | dev_dbg(card->dev, "Symmetry forces %dHz rate\n", |
06f409d7 MB |
332 | machine->rate); |
333 | ||
334 | ret = snd_pcm_hw_constraint_minmax(substream->runtime, | |
335 | SNDRV_PCM_HW_PARAM_RATE, | |
336 | machine->rate, | |
337 | machine->rate); | |
338 | if (ret < 0) { | |
339 | dev_err(card->dev, | |
340 | "Unable to apply rate symmetry constraint: %d\n", ret); | |
341 | return ret; | |
342 | } | |
343 | } | |
344 | ||
345 | return 0; | |
346 | } | |
347 | ||
db2a4165 FM |
348 | /* |
349 | * Called by ALSA when a PCM substream is opened, the runtime->hw record is | |
350 | * then initialized and any private data can be allocated. This also calls | |
351 | * startup for the cpu DAI, platform, machine and codec DAI. | |
352 | */ | |
353 | static int soc_pcm_open(struct snd_pcm_substream *substream) | |
354 | { | |
355 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
356 | struct snd_soc_device *socdev = rtd->socdev; | |
87689d56 | 357 | struct snd_soc_card *card = socdev->card; |
db2a4165 | 358 | struct snd_pcm_runtime *runtime = substream->runtime; |
cb666e5b | 359 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 | 360 | struct snd_soc_platform *platform = card->platform; |
3c4b266f LG |
361 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
362 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
363 | int ret = 0; |
364 | ||
365 | mutex_lock(&pcm_mutex); | |
366 | ||
367 | /* startup the audio subsystem */ | |
6335d055 EM |
368 | if (cpu_dai->ops->startup) { |
369 | ret = cpu_dai->ops->startup(substream, cpu_dai); | |
db2a4165 FM |
370 | if (ret < 0) { |
371 | printk(KERN_ERR "asoc: can't open interface %s\n", | |
cb666e5b | 372 | cpu_dai->name); |
db2a4165 FM |
373 | goto out; |
374 | } | |
375 | } | |
376 | ||
377 | if (platform->pcm_ops->open) { | |
378 | ret = platform->pcm_ops->open(substream); | |
379 | if (ret < 0) { | |
380 | printk(KERN_ERR "asoc: can't open platform %s\n", platform->name); | |
381 | goto platform_err; | |
382 | } | |
383 | } | |
384 | ||
6335d055 EM |
385 | if (codec_dai->ops->startup) { |
386 | ret = codec_dai->ops->startup(substream, codec_dai); | |
db2a4165 | 387 | if (ret < 0) { |
cb666e5b LG |
388 | printk(KERN_ERR "asoc: can't open codec %s\n", |
389 | codec_dai->name); | |
390 | goto codec_dai_err; | |
db2a4165 FM |
391 | } |
392 | } | |
393 | ||
cb666e5b LG |
394 | if (machine->ops && machine->ops->startup) { |
395 | ret = machine->ops->startup(substream); | |
db2a4165 | 396 | if (ret < 0) { |
cb666e5b LG |
397 | printk(KERN_ERR "asoc: %s startup failed\n", machine->name); |
398 | goto machine_err; | |
db2a4165 FM |
399 | } |
400 | } | |
401 | ||
db2a4165 FM |
402 | /* Check that the codec and cpu DAI's are compatible */ |
403 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
404 | runtime->hw.rate_min = | |
3ff3f64b MB |
405 | max(codec_dai->playback.rate_min, |
406 | cpu_dai->playback.rate_min); | |
db2a4165 | 407 | runtime->hw.rate_max = |
3ff3f64b MB |
408 | min(codec_dai->playback.rate_max, |
409 | cpu_dai->playback.rate_max); | |
db2a4165 | 410 | runtime->hw.channels_min = |
cb666e5b LG |
411 | max(codec_dai->playback.channels_min, |
412 | cpu_dai->playback.channels_min); | |
db2a4165 | 413 | runtime->hw.channels_max = |
cb666e5b LG |
414 | min(codec_dai->playback.channels_max, |
415 | cpu_dai->playback.channels_max); | |
416 | runtime->hw.formats = | |
417 | codec_dai->playback.formats & cpu_dai->playback.formats; | |
418 | runtime->hw.rates = | |
419 | codec_dai->playback.rates & cpu_dai->playback.rates; | |
d9ad6296 JB |
420 | if (codec_dai->playback.rates |
421 | & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) | |
422 | runtime->hw.rates |= cpu_dai->playback.rates; | |
423 | if (cpu_dai->playback.rates | |
424 | & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) | |
425 | runtime->hw.rates |= codec_dai->playback.rates; | |
db2a4165 FM |
426 | } else { |
427 | runtime->hw.rate_min = | |
3ff3f64b MB |
428 | max(codec_dai->capture.rate_min, |
429 | cpu_dai->capture.rate_min); | |
db2a4165 | 430 | runtime->hw.rate_max = |
3ff3f64b MB |
431 | min(codec_dai->capture.rate_max, |
432 | cpu_dai->capture.rate_max); | |
db2a4165 | 433 | runtime->hw.channels_min = |
cb666e5b LG |
434 | max(codec_dai->capture.channels_min, |
435 | cpu_dai->capture.channels_min); | |
db2a4165 | 436 | runtime->hw.channels_max = |
cb666e5b LG |
437 | min(codec_dai->capture.channels_max, |
438 | cpu_dai->capture.channels_max); | |
439 | runtime->hw.formats = | |
440 | codec_dai->capture.formats & cpu_dai->capture.formats; | |
441 | runtime->hw.rates = | |
442 | codec_dai->capture.rates & cpu_dai->capture.rates; | |
d9ad6296 JB |
443 | if (codec_dai->capture.rates |
444 | & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) | |
445 | runtime->hw.rates |= cpu_dai->capture.rates; | |
446 | if (cpu_dai->capture.rates | |
447 | & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) | |
448 | runtime->hw.rates |= codec_dai->capture.rates; | |
db2a4165 FM |
449 | } |
450 | ||
451 | snd_pcm_limit_hw_rates(runtime); | |
452 | if (!runtime->hw.rates) { | |
453 | printk(KERN_ERR "asoc: %s <-> %s No matching rates\n", | |
cb666e5b | 454 | codec_dai->name, cpu_dai->name); |
bb1c0478 | 455 | goto config_err; |
db2a4165 FM |
456 | } |
457 | if (!runtime->hw.formats) { | |
458 | printk(KERN_ERR "asoc: %s <-> %s No matching formats\n", | |
cb666e5b | 459 | codec_dai->name, cpu_dai->name); |
bb1c0478 | 460 | goto config_err; |
db2a4165 FM |
461 | } |
462 | if (!runtime->hw.channels_min || !runtime->hw.channels_max) { | |
463 | printk(KERN_ERR "asoc: %s <-> %s No matching channels\n", | |
cb666e5b | 464 | codec_dai->name, cpu_dai->name); |
bb1c0478 | 465 | goto config_err; |
db2a4165 FM |
466 | } |
467 | ||
06f409d7 MB |
468 | /* Symmetry only applies if we've already got an active stream. */ |
469 | if (cpu_dai->active || codec_dai->active) { | |
470 | ret = soc_pcm_apply_symmetry(substream); | |
471 | if (ret != 0) | |
bb1c0478 | 472 | goto config_err; |
06f409d7 MB |
473 | } |
474 | ||
f24368c2 MB |
475 | pr_debug("asoc: %s <-> %s info:\n", codec_dai->name, cpu_dai->name); |
476 | pr_debug("asoc: rate mask 0x%x\n", runtime->hw.rates); | |
477 | pr_debug("asoc: min ch %d max ch %d\n", runtime->hw.channels_min, | |
478 | runtime->hw.channels_max); | |
479 | pr_debug("asoc: min rate %d max rate %d\n", runtime->hw.rate_min, | |
480 | runtime->hw.rate_max); | |
db2a4165 | 481 | |
14dc5734 JB |
482 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
483 | cpu_dai->playback.active++; | |
484 | codec_dai->playback.active++; | |
485 | } else { | |
486 | cpu_dai->capture.active++; | |
487 | codec_dai->capture.active++; | |
488 | } | |
489 | cpu_dai->active++; | |
490 | codec_dai->active++; | |
6627a653 | 491 | card->codec->active++; |
db2a4165 FM |
492 | mutex_unlock(&pcm_mutex); |
493 | return 0; | |
494 | ||
bb1c0478 | 495 | config_err: |
db2a4165 FM |
496 | if (machine->ops && machine->ops->shutdown) |
497 | machine->ops->shutdown(substream); | |
498 | ||
bb1c0478 JB |
499 | machine_err: |
500 | if (codec_dai->ops->shutdown) | |
501 | codec_dai->ops->shutdown(substream, codec_dai); | |
502 | ||
cb666e5b | 503 | codec_dai_err: |
db2a4165 FM |
504 | if (platform->pcm_ops->close) |
505 | platform->pcm_ops->close(substream); | |
506 | ||
507 | platform_err: | |
6335d055 EM |
508 | if (cpu_dai->ops->shutdown) |
509 | cpu_dai->ops->shutdown(substream, cpu_dai); | |
db2a4165 FM |
510 | out: |
511 | mutex_unlock(&pcm_mutex); | |
512 | return ret; | |
513 | } | |
514 | ||
515 | /* | |
3a4fa0a2 | 516 | * Power down the audio subsystem pmdown_time msecs after close is called. |
db2a4165 FM |
517 | * This is to ensure there are no pops or clicks in between any music tracks |
518 | * due to DAPM power cycling. | |
519 | */ | |
4484bb2e | 520 | static void close_delayed_work(struct work_struct *work) |
db2a4165 | 521 | { |
6308419a MB |
522 | struct snd_soc_card *card = container_of(work, struct snd_soc_card, |
523 | delayed_work.work); | |
6627a653 | 524 | struct snd_soc_codec *codec = card->codec; |
3c4b266f | 525 | struct snd_soc_dai *codec_dai; |
db2a4165 FM |
526 | int i; |
527 | ||
528 | mutex_lock(&pcm_mutex); | |
3ff3f64b | 529 | for (i = 0; i < codec->num_dai; i++) { |
db2a4165 FM |
530 | codec_dai = &codec->dai[i]; |
531 | ||
f24368c2 MB |
532 | pr_debug("pop wq checking: %s status: %s waiting: %s\n", |
533 | codec_dai->playback.stream_name, | |
534 | codec_dai->playback.active ? "active" : "inactive", | |
535 | codec_dai->pop_wait ? "yes" : "no"); | |
db2a4165 FM |
536 | |
537 | /* are we waiting on this codec DAI stream */ | |
538 | if (codec_dai->pop_wait == 1) { | |
db2a4165 | 539 | codec_dai->pop_wait = 0; |
0b4d221b LG |
540 | snd_soc_dapm_stream_event(codec, |
541 | codec_dai->playback.stream_name, | |
db2a4165 | 542 | SND_SOC_DAPM_STREAM_STOP); |
db2a4165 FM |
543 | } |
544 | } | |
545 | mutex_unlock(&pcm_mutex); | |
546 | } | |
547 | ||
548 | /* | |
549 | * Called by ALSA when a PCM substream is closed. Private data can be | |
550 | * freed here. The cpu DAI, codec DAI, machine and platform are also | |
551 | * shutdown. | |
552 | */ | |
553 | static int soc_codec_close(struct snd_pcm_substream *substream) | |
554 | { | |
555 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
556 | struct snd_soc_device *socdev = rtd->socdev; | |
6308419a | 557 | struct snd_soc_card *card = socdev->card; |
cb666e5b | 558 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 | 559 | struct snd_soc_platform *platform = card->platform; |
3c4b266f LG |
560 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
561 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
6627a653 | 562 | struct snd_soc_codec *codec = card->codec; |
db2a4165 FM |
563 | |
564 | mutex_lock(&pcm_mutex); | |
565 | ||
14dc5734 JB |
566 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
567 | cpu_dai->playback.active--; | |
568 | codec_dai->playback.active--; | |
569 | } else { | |
570 | cpu_dai->capture.active--; | |
571 | codec_dai->capture.active--; | |
db2a4165 | 572 | } |
14dc5734 JB |
573 | |
574 | cpu_dai->active--; | |
575 | codec_dai->active--; | |
db2a4165 FM |
576 | codec->active--; |
577 | ||
6010b2da MB |
578 | /* Muting the DAC suppresses artifacts caused during digital |
579 | * shutdown, for example from stopping clocks. | |
580 | */ | |
581 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
582 | snd_soc_dai_digital_mute(codec_dai, 1); | |
583 | ||
6335d055 EM |
584 | if (cpu_dai->ops->shutdown) |
585 | cpu_dai->ops->shutdown(substream, cpu_dai); | |
db2a4165 | 586 | |
6335d055 EM |
587 | if (codec_dai->ops->shutdown) |
588 | codec_dai->ops->shutdown(substream, codec_dai); | |
db2a4165 FM |
589 | |
590 | if (machine->ops && machine->ops->shutdown) | |
591 | machine->ops->shutdown(substream); | |
592 | ||
593 | if (platform->pcm_ops->close) | |
594 | platform->pcm_ops->close(substream); | |
db2a4165 FM |
595 | |
596 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
597 | /* start delayed pop wq here for playback streams */ | |
cb666e5b | 598 | codec_dai->pop_wait = 1; |
6308419a | 599 | schedule_delayed_work(&card->delayed_work, |
96dd3622 | 600 | msecs_to_jiffies(card->pmdown_time)); |
db2a4165 FM |
601 | } else { |
602 | /* capture streams can be powered down now */ | |
cb666e5b | 603 | snd_soc_dapm_stream_event(codec, |
0b4d221b LG |
604 | codec_dai->capture.stream_name, |
605 | SND_SOC_DAPM_STREAM_STOP); | |
db2a4165 FM |
606 | } |
607 | ||
608 | mutex_unlock(&pcm_mutex); | |
609 | return 0; | |
610 | } | |
611 | ||
612 | /* | |
613 | * Called by ALSA when the PCM substream is prepared, can set format, sample | |
614 | * rate, etc. This function is non atomic and can be called multiple times, | |
615 | * it can refer to the runtime info. | |
616 | */ | |
617 | static int soc_pcm_prepare(struct snd_pcm_substream *substream) | |
618 | { | |
619 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
620 | struct snd_soc_device *socdev = rtd->socdev; | |
6308419a | 621 | struct snd_soc_card *card = socdev->card; |
cb666e5b | 622 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 | 623 | struct snd_soc_platform *platform = card->platform; |
3c4b266f LG |
624 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
625 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
6627a653 | 626 | struct snd_soc_codec *codec = card->codec; |
db2a4165 FM |
627 | int ret = 0; |
628 | ||
629 | mutex_lock(&pcm_mutex); | |
cb666e5b LG |
630 | |
631 | if (machine->ops && machine->ops->prepare) { | |
632 | ret = machine->ops->prepare(substream); | |
633 | if (ret < 0) { | |
634 | printk(KERN_ERR "asoc: machine prepare error\n"); | |
635 | goto out; | |
636 | } | |
637 | } | |
638 | ||
db2a4165 FM |
639 | if (platform->pcm_ops->prepare) { |
640 | ret = platform->pcm_ops->prepare(substream); | |
a71a468a LG |
641 | if (ret < 0) { |
642 | printk(KERN_ERR "asoc: platform prepare error\n"); | |
db2a4165 | 643 | goto out; |
a71a468a | 644 | } |
db2a4165 FM |
645 | } |
646 | ||
6335d055 EM |
647 | if (codec_dai->ops->prepare) { |
648 | ret = codec_dai->ops->prepare(substream, codec_dai); | |
a71a468a LG |
649 | if (ret < 0) { |
650 | printk(KERN_ERR "asoc: codec DAI prepare error\n"); | |
db2a4165 | 651 | goto out; |
a71a468a | 652 | } |
db2a4165 FM |
653 | } |
654 | ||
6335d055 EM |
655 | if (cpu_dai->ops->prepare) { |
656 | ret = cpu_dai->ops->prepare(substream, cpu_dai); | |
cb666e5b LG |
657 | if (ret < 0) { |
658 | printk(KERN_ERR "asoc: cpu DAI prepare error\n"); | |
659 | goto out; | |
660 | } | |
661 | } | |
db2a4165 | 662 | |
d45f6219 MB |
663 | /* cancel any delayed stream shutdown that is pending */ |
664 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
665 | codec_dai->pop_wait) { | |
666 | codec_dai->pop_wait = 0; | |
6308419a | 667 | cancel_delayed_work(&card->delayed_work); |
d45f6219 | 668 | } |
db2a4165 | 669 | |
452c5eaa MB |
670 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
671 | snd_soc_dapm_stream_event(codec, | |
672 | codec_dai->playback.stream_name, | |
673 | SND_SOC_DAPM_STREAM_START); | |
674 | else | |
675 | snd_soc_dapm_stream_event(codec, | |
676 | codec_dai->capture.stream_name, | |
677 | SND_SOC_DAPM_STREAM_START); | |
8c6529db | 678 | |
452c5eaa | 679 | snd_soc_dai_digital_mute(codec_dai, 0); |
db2a4165 FM |
680 | |
681 | out: | |
682 | mutex_unlock(&pcm_mutex); | |
683 | return ret; | |
684 | } | |
685 | ||
686 | /* | |
687 | * Called by ALSA when the hardware params are set by application. This | |
688 | * function can also be called multiple times and can allocate buffers | |
689 | * (using snd_pcm_lib_* ). It's non-atomic. | |
690 | */ | |
691 | static int soc_pcm_hw_params(struct snd_pcm_substream *substream, | |
692 | struct snd_pcm_hw_params *params) | |
693 | { | |
694 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
695 | struct snd_soc_device *socdev = rtd->socdev; | |
cb666e5b | 696 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 MB |
697 | struct snd_soc_card *card = socdev->card; |
698 | struct snd_soc_platform *platform = card->platform; | |
3c4b266f LG |
699 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
700 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
701 | int ret = 0; |
702 | ||
703 | mutex_lock(&pcm_mutex); | |
704 | ||
cb666e5b LG |
705 | if (machine->ops && machine->ops->hw_params) { |
706 | ret = machine->ops->hw_params(substream, params); | |
707 | if (ret < 0) { | |
708 | printk(KERN_ERR "asoc: machine hw_params failed\n"); | |
db2a4165 | 709 | goto out; |
cb666e5b | 710 | } |
db2a4165 FM |
711 | } |
712 | ||
6335d055 EM |
713 | if (codec_dai->ops->hw_params) { |
714 | ret = codec_dai->ops->hw_params(substream, params, codec_dai); | |
db2a4165 FM |
715 | if (ret < 0) { |
716 | printk(KERN_ERR "asoc: can't set codec %s hw params\n", | |
cb666e5b LG |
717 | codec_dai->name); |
718 | goto codec_err; | |
db2a4165 FM |
719 | } |
720 | } | |
721 | ||
6335d055 EM |
722 | if (cpu_dai->ops->hw_params) { |
723 | ret = cpu_dai->ops->hw_params(substream, params, cpu_dai); | |
db2a4165 | 724 | if (ret < 0) { |
3ff3f64b | 725 | printk(KERN_ERR "asoc: interface %s hw params failed\n", |
cb666e5b | 726 | cpu_dai->name); |
db2a4165 FM |
727 | goto interface_err; |
728 | } | |
729 | } | |
730 | ||
731 | if (platform->pcm_ops->hw_params) { | |
732 | ret = platform->pcm_ops->hw_params(substream, params); | |
733 | if (ret < 0) { | |
3ff3f64b | 734 | printk(KERN_ERR "asoc: platform %s hw params failed\n", |
db2a4165 FM |
735 | platform->name); |
736 | goto platform_err; | |
737 | } | |
738 | } | |
739 | ||
06f409d7 MB |
740 | machine->rate = params_rate(params); |
741 | ||
db2a4165 FM |
742 | out: |
743 | mutex_unlock(&pcm_mutex); | |
744 | return ret; | |
745 | ||
db2a4165 | 746 | platform_err: |
6335d055 EM |
747 | if (cpu_dai->ops->hw_free) |
748 | cpu_dai->ops->hw_free(substream, cpu_dai); | |
db2a4165 FM |
749 | |
750 | interface_err: | |
6335d055 EM |
751 | if (codec_dai->ops->hw_free) |
752 | codec_dai->ops->hw_free(substream, codec_dai); | |
cb666e5b LG |
753 | |
754 | codec_err: | |
3ff3f64b | 755 | if (machine->ops && machine->ops->hw_free) |
cb666e5b | 756 | machine->ops->hw_free(substream); |
db2a4165 FM |
757 | |
758 | mutex_unlock(&pcm_mutex); | |
759 | return ret; | |
760 | } | |
761 | ||
762 | /* | |
763 | * Free's resources allocated by hw_params, can be called multiple times | |
764 | */ | |
765 | static int soc_pcm_hw_free(struct snd_pcm_substream *substream) | |
766 | { | |
767 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
768 | struct snd_soc_device *socdev = rtd->socdev; | |
cb666e5b | 769 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 MB |
770 | struct snd_soc_card *card = socdev->card; |
771 | struct snd_soc_platform *platform = card->platform; | |
3c4b266f LG |
772 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
773 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
6627a653 | 774 | struct snd_soc_codec *codec = card->codec; |
db2a4165 FM |
775 | |
776 | mutex_lock(&pcm_mutex); | |
777 | ||
778 | /* apply codec digital mute */ | |
8c6529db LG |
779 | if (!codec->active) |
780 | snd_soc_dai_digital_mute(codec_dai, 1); | |
db2a4165 FM |
781 | |
782 | /* free any machine hw params */ | |
783 | if (machine->ops && machine->ops->hw_free) | |
784 | machine->ops->hw_free(substream); | |
785 | ||
786 | /* free any DMA resources */ | |
787 | if (platform->pcm_ops->hw_free) | |
788 | platform->pcm_ops->hw_free(substream); | |
789 | ||
790 | /* now free hw params for the DAI's */ | |
6335d055 EM |
791 | if (codec_dai->ops->hw_free) |
792 | codec_dai->ops->hw_free(substream, codec_dai); | |
db2a4165 | 793 | |
6335d055 EM |
794 | if (cpu_dai->ops->hw_free) |
795 | cpu_dai->ops->hw_free(substream, cpu_dai); | |
db2a4165 FM |
796 | |
797 | mutex_unlock(&pcm_mutex); | |
798 | return 0; | |
799 | } | |
800 | ||
801 | static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd) | |
802 | { | |
803 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
804 | struct snd_soc_device *socdev = rtd->socdev; | |
87689d56 | 805 | struct snd_soc_card *card= socdev->card; |
cb666e5b | 806 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 | 807 | struct snd_soc_platform *platform = card->platform; |
3c4b266f LG |
808 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
809 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
810 | int ret; |
811 | ||
6335d055 EM |
812 | if (codec_dai->ops->trigger) { |
813 | ret = codec_dai->ops->trigger(substream, cmd, codec_dai); | |
db2a4165 FM |
814 | if (ret < 0) |
815 | return ret; | |
816 | } | |
817 | ||
818 | if (platform->pcm_ops->trigger) { | |
819 | ret = platform->pcm_ops->trigger(substream, cmd); | |
820 | if (ret < 0) | |
821 | return ret; | |
822 | } | |
823 | ||
6335d055 EM |
824 | if (cpu_dai->ops->trigger) { |
825 | ret = cpu_dai->ops->trigger(substream, cmd, cpu_dai); | |
db2a4165 FM |
826 | if (ret < 0) |
827 | return ret; | |
828 | } | |
829 | return 0; | |
830 | } | |
831 | ||
377b6f62 PU |
832 | /* |
833 | * soc level wrapper for pointer callback | |
258020d0 PU |
834 | * If cpu_dai, codec_dai, platform driver has the delay callback, than |
835 | * the runtime->delay will be updated accordingly. | |
377b6f62 PU |
836 | */ |
837 | static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream) | |
838 | { | |
839 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
840 | struct snd_soc_device *socdev = rtd->socdev; | |
841 | struct snd_soc_card *card = socdev->card; | |
842 | struct snd_soc_platform *platform = card->platform; | |
258020d0 PU |
843 | struct snd_soc_dai_link *machine = rtd->dai; |
844 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; | |
845 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
846 | struct snd_pcm_runtime *runtime = substream->runtime; | |
377b6f62 | 847 | snd_pcm_uframes_t offset = 0; |
258020d0 | 848 | snd_pcm_sframes_t delay = 0; |
377b6f62 PU |
849 | |
850 | if (platform->pcm_ops->pointer) | |
851 | offset = platform->pcm_ops->pointer(substream); | |
852 | ||
258020d0 PU |
853 | if (cpu_dai->ops->delay) |
854 | delay += cpu_dai->ops->delay(substream, cpu_dai); | |
855 | ||
856 | if (codec_dai->ops->delay) | |
857 | delay += codec_dai->ops->delay(substream, codec_dai); | |
858 | ||
859 | if (platform->delay) | |
860 | delay += platform->delay(substream, codec_dai); | |
861 | ||
862 | runtime->delay = delay; | |
863 | ||
377b6f62 PU |
864 | return offset; |
865 | } | |
866 | ||
db2a4165 FM |
867 | /* ASoC PCM operations */ |
868 | static struct snd_pcm_ops soc_pcm_ops = { | |
869 | .open = soc_pcm_open, | |
870 | .close = soc_codec_close, | |
871 | .hw_params = soc_pcm_hw_params, | |
872 | .hw_free = soc_pcm_hw_free, | |
873 | .prepare = soc_pcm_prepare, | |
874 | .trigger = soc_pcm_trigger, | |
377b6f62 | 875 | .pointer = soc_pcm_pointer, |
db2a4165 FM |
876 | }; |
877 | ||
878 | #ifdef CONFIG_PM | |
879 | /* powers down audio subsystem for suspend */ | |
416356fc | 880 | static int soc_suspend(struct device *dev) |
db2a4165 | 881 | { |
416356fc | 882 | struct platform_device *pdev = to_platform_device(dev); |
3ff3f64b | 883 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
87506549 | 884 | struct snd_soc_card *card = socdev->card; |
87689d56 | 885 | struct snd_soc_platform *platform = card->platform; |
3ff3f64b | 886 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; |
6627a653 | 887 | struct snd_soc_codec *codec = card->codec; |
db2a4165 FM |
888 | int i; |
889 | ||
e3509ff0 DM |
890 | /* If the initialization of this soc device failed, there is no codec |
891 | * associated with it. Just bail out in this case. | |
892 | */ | |
893 | if (!codec) | |
894 | return 0; | |
895 | ||
6ed25978 AG |
896 | /* Due to the resume being scheduled into a workqueue we could |
897 | * suspend before that's finished - wait for it to complete. | |
898 | */ | |
899 | snd_power_lock(codec->card); | |
900 | snd_power_wait(codec->card, SNDRV_CTL_POWER_D0); | |
901 | snd_power_unlock(codec->card); | |
902 | ||
903 | /* we're going to block userspace touching us until resume completes */ | |
904 | snd_power_change_state(codec->card, SNDRV_CTL_POWER_D3hot); | |
905 | ||
db2a4165 | 906 | /* mute any active DAC's */ |
dee89c4d MB |
907 | for (i = 0; i < card->num_links; i++) { |
908 | struct snd_soc_dai *dai = card->dai_link[i].codec_dai; | |
3efab7dc MB |
909 | |
910 | if (card->dai_link[i].ignore_suspend) | |
911 | continue; | |
912 | ||
6335d055 EM |
913 | if (dai->ops->digital_mute && dai->playback.active) |
914 | dai->ops->digital_mute(dai, 1); | |
db2a4165 FM |
915 | } |
916 | ||
4ccab3e7 | 917 | /* suspend all pcms */ |
3efab7dc MB |
918 | for (i = 0; i < card->num_links; i++) { |
919 | if (card->dai_link[i].ignore_suspend) | |
920 | continue; | |
921 | ||
87506549 | 922 | snd_pcm_suspend_all(card->dai_link[i].pcm); |
3efab7dc | 923 | } |
4ccab3e7 | 924 | |
87506549 | 925 | if (card->suspend_pre) |
416356fc | 926 | card->suspend_pre(pdev, PMSG_SUSPEND); |
db2a4165 | 927 | |
87506549 MB |
928 | for (i = 0; i < card->num_links; i++) { |
929 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
3efab7dc MB |
930 | |
931 | if (card->dai_link[i].ignore_suspend) | |
932 | continue; | |
933 | ||
3ba9e10a | 934 | if (cpu_dai->suspend && !cpu_dai->ac97_control) |
dc7d7b83 | 935 | cpu_dai->suspend(cpu_dai); |
db2a4165 | 936 | if (platform->suspend) |
d273ebe7 | 937 | platform->suspend(&card->dai_link[i]); |
db2a4165 FM |
938 | } |
939 | ||
940 | /* close any waiting streams and save state */ | |
6308419a | 941 | run_delayed_work(&card->delayed_work); |
0be9898a | 942 | codec->suspend_bias_level = codec->bias_level; |
db2a4165 | 943 | |
3ff3f64b | 944 | for (i = 0; i < codec->num_dai; i++) { |
db2a4165 | 945 | char *stream = codec->dai[i].playback.stream_name; |
3efab7dc MB |
946 | |
947 | if (card->dai_link[i].ignore_suspend) | |
948 | continue; | |
949 | ||
db2a4165 FM |
950 | if (stream != NULL) |
951 | snd_soc_dapm_stream_event(codec, stream, | |
952 | SND_SOC_DAPM_STREAM_SUSPEND); | |
953 | stream = codec->dai[i].capture.stream_name; | |
954 | if (stream != NULL) | |
955 | snd_soc_dapm_stream_event(codec, stream, | |
956 | SND_SOC_DAPM_STREAM_SUSPEND); | |
957 | } | |
958 | ||
1547aba9 MB |
959 | /* If there are paths active then the CODEC will be held with |
960 | * bias _ON and should not be suspended. */ | |
961 | if (codec_dev->suspend) { | |
962 | switch (codec->bias_level) { | |
963 | case SND_SOC_BIAS_STANDBY: | |
964 | case SND_SOC_BIAS_OFF: | |
965 | codec_dev->suspend(pdev, PMSG_SUSPEND); | |
966 | break; | |
967 | default: | |
968 | dev_dbg(socdev->dev, "CODEC is on over suspend\n"); | |
969 | break; | |
970 | } | |
971 | } | |
db2a4165 | 972 | |
87506549 MB |
973 | for (i = 0; i < card->num_links; i++) { |
974 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
3efab7dc MB |
975 | |
976 | if (card->dai_link[i].ignore_suspend) | |
977 | continue; | |
978 | ||
3ba9e10a | 979 | if (cpu_dai->suspend && cpu_dai->ac97_control) |
dc7d7b83 | 980 | cpu_dai->suspend(cpu_dai); |
db2a4165 FM |
981 | } |
982 | ||
87506549 | 983 | if (card->suspend_post) |
416356fc | 984 | card->suspend_post(pdev, PMSG_SUSPEND); |
db2a4165 FM |
985 | |
986 | return 0; | |
987 | } | |
988 | ||
6ed25978 AG |
989 | /* deferred resume work, so resume can complete before we finished |
990 | * setting our codec back up, which can be very slow on I2C | |
991 | */ | |
992 | static void soc_resume_deferred(struct work_struct *work) | |
db2a4165 | 993 | { |
6308419a MB |
994 | struct snd_soc_card *card = container_of(work, |
995 | struct snd_soc_card, | |
996 | deferred_resume_work); | |
997 | struct snd_soc_device *socdev = card->socdev; | |
87689d56 | 998 | struct snd_soc_platform *platform = card->platform; |
3ff3f64b | 999 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; |
6627a653 | 1000 | struct snd_soc_codec *codec = card->codec; |
6ed25978 | 1001 | struct platform_device *pdev = to_platform_device(socdev->dev); |
db2a4165 FM |
1002 | int i; |
1003 | ||
6ed25978 AG |
1004 | /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time, |
1005 | * so userspace apps are blocked from touching us | |
1006 | */ | |
1007 | ||
fde22f27 | 1008 | dev_dbg(socdev->dev, "starting resume work\n"); |
6ed25978 | 1009 | |
9949788b MB |
1010 | /* Bring us up into D2 so that DAPM starts enabling things */ |
1011 | snd_power_change_state(codec->card, SNDRV_CTL_POWER_D2); | |
1012 | ||
87506549 MB |
1013 | if (card->resume_pre) |
1014 | card->resume_pre(pdev); | |
db2a4165 | 1015 | |
87506549 MB |
1016 | for (i = 0; i < card->num_links; i++) { |
1017 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
3efab7dc MB |
1018 | |
1019 | if (card->dai_link[i].ignore_suspend) | |
1020 | continue; | |
1021 | ||
3ba9e10a | 1022 | if (cpu_dai->resume && cpu_dai->ac97_control) |
dc7d7b83 | 1023 | cpu_dai->resume(cpu_dai); |
db2a4165 FM |
1024 | } |
1025 | ||
1547aba9 MB |
1026 | /* If the CODEC was idle over suspend then it will have been |
1027 | * left with bias OFF or STANDBY and suspended so we must now | |
1028 | * resume. Otherwise the suspend was suppressed. | |
1029 | */ | |
1030 | if (codec_dev->resume) { | |
1031 | switch (codec->bias_level) { | |
1032 | case SND_SOC_BIAS_STANDBY: | |
1033 | case SND_SOC_BIAS_OFF: | |
1034 | codec_dev->resume(pdev); | |
1035 | break; | |
1036 | default: | |
1037 | dev_dbg(socdev->dev, "CODEC was on over suspend\n"); | |
1038 | break; | |
1039 | } | |
1040 | } | |
db2a4165 | 1041 | |
3ff3f64b MB |
1042 | for (i = 0; i < codec->num_dai; i++) { |
1043 | char *stream = codec->dai[i].playback.stream_name; | |
3efab7dc MB |
1044 | |
1045 | if (card->dai_link[i].ignore_suspend) | |
1046 | continue; | |
1047 | ||
db2a4165 FM |
1048 | if (stream != NULL) |
1049 | snd_soc_dapm_stream_event(codec, stream, | |
1050 | SND_SOC_DAPM_STREAM_RESUME); | |
1051 | stream = codec->dai[i].capture.stream_name; | |
1052 | if (stream != NULL) | |
1053 | snd_soc_dapm_stream_event(codec, stream, | |
1054 | SND_SOC_DAPM_STREAM_RESUME); | |
1055 | } | |
1056 | ||
3ff3f64b | 1057 | /* unmute any active DACs */ |
dee89c4d MB |
1058 | for (i = 0; i < card->num_links; i++) { |
1059 | struct snd_soc_dai *dai = card->dai_link[i].codec_dai; | |
3efab7dc MB |
1060 | |
1061 | if (card->dai_link[i].ignore_suspend) | |
1062 | continue; | |
1063 | ||
6335d055 EM |
1064 | if (dai->ops->digital_mute && dai->playback.active) |
1065 | dai->ops->digital_mute(dai, 0); | |
db2a4165 FM |
1066 | } |
1067 | ||
87506549 MB |
1068 | for (i = 0; i < card->num_links; i++) { |
1069 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
3efab7dc MB |
1070 | |
1071 | if (card->dai_link[i].ignore_suspend) | |
1072 | continue; | |
1073 | ||
3ba9e10a | 1074 | if (cpu_dai->resume && !cpu_dai->ac97_control) |
dc7d7b83 | 1075 | cpu_dai->resume(cpu_dai); |
db2a4165 | 1076 | if (platform->resume) |
d273ebe7 | 1077 | platform->resume(&card->dai_link[i]); |
db2a4165 FM |
1078 | } |
1079 | ||
87506549 MB |
1080 | if (card->resume_post) |
1081 | card->resume_post(pdev); | |
db2a4165 | 1082 | |
fde22f27 | 1083 | dev_dbg(socdev->dev, "resume work completed\n"); |
6ed25978 AG |
1084 | |
1085 | /* userspace can access us now we are back as we were before */ | |
1086 | snd_power_change_state(codec->card, SNDRV_CTL_POWER_D0); | |
1087 | } | |
1088 | ||
1089 | /* powers up audio subsystem after a suspend */ | |
416356fc | 1090 | static int soc_resume(struct device *dev) |
6ed25978 | 1091 | { |
416356fc | 1092 | struct platform_device *pdev = to_platform_device(dev); |
6ed25978 | 1093 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
6308419a | 1094 | struct snd_soc_card *card = socdev->card; |
64ab9baa | 1095 | struct snd_soc_dai *cpu_dai = card->dai_link[0].cpu_dai; |
6ed25978 | 1096 | |
b9dd94a8 PU |
1097 | /* If the initialization of this soc device failed, there is no codec |
1098 | * associated with it. Just bail out in this case. | |
1099 | */ | |
1100 | if (!card->codec) | |
1101 | return 0; | |
1102 | ||
64ab9baa MB |
1103 | /* AC97 devices might have other drivers hanging off them so |
1104 | * need to resume immediately. Other drivers don't have that | |
1105 | * problem and may take a substantial amount of time to resume | |
1106 | * due to I/O costs and anti-pop so handle them out of line. | |
1107 | */ | |
1108 | if (cpu_dai->ac97_control) { | |
1109 | dev_dbg(socdev->dev, "Resuming AC97 immediately\n"); | |
1110 | soc_resume_deferred(&card->deferred_resume_work); | |
1111 | } else { | |
1112 | dev_dbg(socdev->dev, "Scheduling resume work\n"); | |
1113 | if (!schedule_work(&card->deferred_resume_work)) | |
1114 | dev_err(socdev->dev, "resume work item may be lost\n"); | |
1115 | } | |
6ed25978 | 1116 | |
db2a4165 FM |
1117 | return 0; |
1118 | } | |
db2a4165 FM |
1119 | #else |
1120 | #define soc_suspend NULL | |
1121 | #define soc_resume NULL | |
1122 | #endif | |
1123 | ||
02a06d30 BS |
1124 | static struct snd_soc_dai_ops null_dai_ops = { |
1125 | }; | |
1126 | ||
435c5e25 | 1127 | static void snd_soc_instantiate_card(struct snd_soc_card *card) |
db2a4165 | 1128 | { |
435c5e25 MB |
1129 | struct platform_device *pdev = container_of(card->dev, |
1130 | struct platform_device, | |
1131 | dev); | |
1132 | struct snd_soc_codec_device *codec_dev = card->socdev->codec_dev; | |
fe3e78e0 | 1133 | struct snd_soc_codec *codec; |
435c5e25 MB |
1134 | struct snd_soc_platform *platform; |
1135 | struct snd_soc_dai *dai; | |
6b05eda6 | 1136 | int i, found, ret, ac97; |
435c5e25 MB |
1137 | |
1138 | if (card->instantiated) | |
1139 | return; | |
1140 | ||
1141 | found = 0; | |
1142 | list_for_each_entry(platform, &platform_list, list) | |
1143 | if (card->platform == platform) { | |
1144 | found = 1; | |
1145 | break; | |
1146 | } | |
1147 | if (!found) { | |
1148 | dev_dbg(card->dev, "Platform %s not registered\n", | |
1149 | card->platform->name); | |
1150 | return; | |
1151 | } | |
6308419a | 1152 | |
6b05eda6 | 1153 | ac97 = 0; |
435c5e25 MB |
1154 | for (i = 0; i < card->num_links; i++) { |
1155 | found = 0; | |
1156 | list_for_each_entry(dai, &dai_list, list) | |
1157 | if (card->dai_link[i].cpu_dai == dai) { | |
1158 | found = 1; | |
1159 | break; | |
1160 | } | |
1161 | if (!found) { | |
1162 | dev_dbg(card->dev, "DAI %s not registered\n", | |
1163 | card->dai_link[i].cpu_dai->name); | |
1164 | return; | |
1165 | } | |
6b05eda6 MB |
1166 | |
1167 | if (card->dai_link[i].cpu_dai->ac97_control) | |
1168 | ac97 = 1; | |
c5af3a2e MB |
1169 | } |
1170 | ||
02a06d30 BS |
1171 | for (i = 0; i < card->num_links; i++) { |
1172 | if (!card->dai_link[i].codec_dai->ops) | |
1173 | card->dai_link[i].codec_dai->ops = &null_dai_ops; | |
1174 | } | |
1175 | ||
6b05eda6 MB |
1176 | /* If we have AC97 in the system then don't wait for the |
1177 | * codec. This will need revisiting if we have to handle | |
1178 | * systems with mixed AC97 and non-AC97 parts. Only check for | |
1179 | * DAIs currently; we can't do this per link since some AC97 | |
1180 | * codecs have non-AC97 DAIs. | |
1181 | */ | |
1182 | if (!ac97) | |
1183 | for (i = 0; i < card->num_links; i++) { | |
1184 | found = 0; | |
1185 | list_for_each_entry(dai, &dai_list, list) | |
1186 | if (card->dai_link[i].codec_dai == dai) { | |
1187 | found = 1; | |
1188 | break; | |
1189 | } | |
1190 | if (!found) { | |
1191 | dev_dbg(card->dev, "DAI %s not registered\n", | |
1192 | card->dai_link[i].codec_dai->name); | |
1193 | return; | |
1194 | } | |
1195 | } | |
1196 | ||
435c5e25 MB |
1197 | /* Note that we do not current check for codec components */ |
1198 | ||
1199 | dev_dbg(card->dev, "All components present, instantiating\n"); | |
1200 | ||
1201 | /* Found everything, bring it up */ | |
96dd3622 MB |
1202 | card->pmdown_time = pmdown_time; |
1203 | ||
87506549 MB |
1204 | if (card->probe) { |
1205 | ret = card->probe(pdev); | |
3ff3f64b | 1206 | if (ret < 0) |
435c5e25 | 1207 | return; |
db2a4165 FM |
1208 | } |
1209 | ||
87506549 MB |
1210 | for (i = 0; i < card->num_links; i++) { |
1211 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
db2a4165 | 1212 | if (cpu_dai->probe) { |
bdb92876 | 1213 | ret = cpu_dai->probe(pdev, cpu_dai); |
3ff3f64b | 1214 | if (ret < 0) |
db2a4165 FM |
1215 | goto cpu_dai_err; |
1216 | } | |
1217 | } | |
1218 | ||
1219 | if (codec_dev->probe) { | |
1220 | ret = codec_dev->probe(pdev); | |
3ff3f64b | 1221 | if (ret < 0) |
db2a4165 FM |
1222 | goto cpu_dai_err; |
1223 | } | |
fe3e78e0 | 1224 | codec = card->codec; |
db2a4165 FM |
1225 | |
1226 | if (platform->probe) { | |
1227 | ret = platform->probe(pdev); | |
3ff3f64b | 1228 | if (ret < 0) |
db2a4165 FM |
1229 | goto platform_err; |
1230 | } | |
1231 | ||
1232 | /* DAPM stream work */ | |
6308419a | 1233 | INIT_DELAYED_WORK(&card->delayed_work, close_delayed_work); |
1301a964 | 1234 | #ifdef CONFIG_PM |
6ed25978 | 1235 | /* deferred resume work */ |
6308419a | 1236 | INIT_WORK(&card->deferred_resume_work, soc_resume_deferred); |
1301a964 | 1237 | #endif |
6ed25978 | 1238 | |
fe3e78e0 MB |
1239 | for (i = 0; i < card->num_links; i++) { |
1240 | if (card->dai_link[i].init) { | |
1241 | ret = card->dai_link[i].init(codec); | |
1242 | if (ret < 0) { | |
1243 | printk(KERN_ERR "asoc: failed to init %s\n", | |
1244 | card->dai_link[i].stream_name); | |
1245 | continue; | |
1246 | } | |
1247 | } | |
f7732053 | 1248 | if (card->dai_link[i].codec_dai->ac97_control) |
fe3e78e0 | 1249 | ac97 = 1; |
fe3e78e0 MB |
1250 | } |
1251 | ||
1252 | snprintf(codec->card->shortname, sizeof(codec->card->shortname), | |
1253 | "%s", card->name); | |
1254 | snprintf(codec->card->longname, sizeof(codec->card->longname), | |
1255 | "%s (%s)", card->name, codec->name); | |
1256 | ||
1257 | /* Make sure all DAPM widgets are instantiated */ | |
1258 | snd_soc_dapm_new_widgets(codec); | |
1259 | ||
1260 | ret = snd_card_register(codec->card); | |
1261 | if (ret < 0) { | |
1262 | printk(KERN_ERR "asoc: failed to register soundcard for %s\n", | |
1263 | codec->name); | |
1264 | goto card_err; | |
1265 | } | |
1266 | ||
1267 | mutex_lock(&codec->mutex); | |
1268 | #ifdef CONFIG_SND_SOC_AC97_BUS | |
1269 | /* Only instantiate AC97 if not already done by the adaptor | |
1270 | * for the generic AC97 subsystem. | |
1271 | */ | |
1272 | if (ac97 && strcmp(codec->name, "AC97") != 0) { | |
1273 | ret = soc_ac97_dev_register(codec); | |
1274 | if (ret < 0) { | |
1275 | printk(KERN_ERR "asoc: AC97 device register failed\n"); | |
1276 | snd_card_free(codec->card); | |
1277 | mutex_unlock(&codec->mutex); | |
1278 | goto card_err; | |
1279 | } | |
1280 | } | |
1281 | #endif | |
1282 | ||
1283 | ret = snd_soc_dapm_sys_add(card->socdev->dev); | |
1284 | if (ret < 0) | |
1285 | printk(KERN_WARNING "asoc: failed to add dapm sysfs entries\n"); | |
1286 | ||
dbe21408 MB |
1287 | ret = device_create_file(card->socdev->dev, &dev_attr_pmdown_time); |
1288 | if (ret < 0) | |
1289 | printk(KERN_WARNING "asoc: failed to add pmdown_time sysfs\n"); | |
1290 | ||
fe3e78e0 MB |
1291 | ret = device_create_file(card->socdev->dev, &dev_attr_codec_reg); |
1292 | if (ret < 0) | |
1293 | printk(KERN_WARNING "asoc: failed to add codec sysfs files\n"); | |
1294 | ||
1295 | soc_init_codec_debugfs(codec); | |
1296 | mutex_unlock(&codec->mutex); | |
1297 | ||
435c5e25 MB |
1298 | card->instantiated = 1; |
1299 | ||
1300 | return; | |
db2a4165 | 1301 | |
fe3e78e0 MB |
1302 | card_err: |
1303 | if (platform->remove) | |
1304 | platform->remove(pdev); | |
1305 | ||
db2a4165 FM |
1306 | platform_err: |
1307 | if (codec_dev->remove) | |
1308 | codec_dev->remove(pdev); | |
1309 | ||
1310 | cpu_dai_err: | |
18b9b3d9 | 1311 | for (i--; i >= 0; i--) { |
87506549 | 1312 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; |
db2a4165 | 1313 | if (cpu_dai->remove) |
bdb92876 | 1314 | cpu_dai->remove(pdev, cpu_dai); |
db2a4165 FM |
1315 | } |
1316 | ||
87506549 MB |
1317 | if (card->remove) |
1318 | card->remove(pdev); | |
435c5e25 | 1319 | } |
db2a4165 | 1320 | |
435c5e25 | 1321 | /* |
421f91d2 | 1322 | * Attempt to initialise any uninitialised cards. Must be called with |
435c5e25 MB |
1323 | * client_mutex. |
1324 | */ | |
1325 | static void snd_soc_instantiate_cards(void) | |
1326 | { | |
1327 | struct snd_soc_card *card; | |
1328 | list_for_each_entry(card, &card_list, list) | |
1329 | snd_soc_instantiate_card(card); | |
1330 | } | |
1331 | ||
1332 | /* probes a new socdev */ | |
1333 | static int soc_probe(struct platform_device *pdev) | |
1334 | { | |
1335 | int ret = 0; | |
1336 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
1337 | struct snd_soc_card *card = socdev->card; | |
1338 | ||
1339 | /* Bodge while we push things out of socdev */ | |
1340 | card->socdev = socdev; | |
1341 | ||
1342 | /* Bodge while we unpick instantiation */ | |
1343 | card->dev = &pdev->dev; | |
1344 | ret = snd_soc_register_card(card); | |
1345 | if (ret != 0) { | |
1346 | dev_err(&pdev->dev, "Failed to register card\n"); | |
1347 | return ret; | |
1348 | } | |
1349 | ||
1350 | return 0; | |
db2a4165 FM |
1351 | } |
1352 | ||
1353 | /* removes a socdev */ | |
1354 | static int soc_remove(struct platform_device *pdev) | |
1355 | { | |
1356 | int i; | |
1357 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
87506549 | 1358 | struct snd_soc_card *card = socdev->card; |
87689d56 | 1359 | struct snd_soc_platform *platform = card->platform; |
db2a4165 FM |
1360 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; |
1361 | ||
b2dfa62c GL |
1362 | if (card->instantiated) { |
1363 | run_delayed_work(&card->delayed_work); | |
914dc182 | 1364 | |
b2dfa62c GL |
1365 | if (platform->remove) |
1366 | platform->remove(pdev); | |
965ac42c | 1367 | |
b2dfa62c GL |
1368 | if (codec_dev->remove) |
1369 | codec_dev->remove(pdev); | |
db2a4165 | 1370 | |
b2dfa62c GL |
1371 | for (i = 0; i < card->num_links; i++) { |
1372 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
1373 | if (cpu_dai->remove) | |
1374 | cpu_dai->remove(pdev, cpu_dai); | |
1375 | } | |
db2a4165 | 1376 | |
b2dfa62c GL |
1377 | if (card->remove) |
1378 | card->remove(pdev); | |
db2a4165 FM |
1379 | } |
1380 | ||
c5af3a2e MB |
1381 | snd_soc_unregister_card(card); |
1382 | ||
db2a4165 FM |
1383 | return 0; |
1384 | } | |
1385 | ||
416356fc | 1386 | static int soc_poweroff(struct device *dev) |
51737470 | 1387 | { |
416356fc | 1388 | struct platform_device *pdev = to_platform_device(dev); |
51737470 MB |
1389 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
1390 | struct snd_soc_card *card = socdev->card; | |
1391 | ||
1392 | if (!card->instantiated) | |
416356fc | 1393 | return 0; |
51737470 MB |
1394 | |
1395 | /* Flush out pmdown_time work - we actually do want to run it | |
1396 | * now, we're shutting down so no imminent restart. */ | |
1397 | run_delayed_work(&card->delayed_work); | |
1398 | ||
1399 | snd_soc_dapm_shutdown(socdev); | |
416356fc MB |
1400 | |
1401 | return 0; | |
51737470 MB |
1402 | } |
1403 | ||
47145210 | 1404 | static const struct dev_pm_ops soc_pm_ops = { |
416356fc MB |
1405 | .suspend = soc_suspend, |
1406 | .resume = soc_resume, | |
1407 | .poweroff = soc_poweroff, | |
1408 | }; | |
1409 | ||
db2a4165 FM |
1410 | /* ASoC platform driver */ |
1411 | static struct platform_driver soc_driver = { | |
1412 | .driver = { | |
1413 | .name = "soc-audio", | |
8b45a209 | 1414 | .owner = THIS_MODULE, |
416356fc | 1415 | .pm = &soc_pm_ops, |
db2a4165 FM |
1416 | }, |
1417 | .probe = soc_probe, | |
1418 | .remove = soc_remove, | |
db2a4165 FM |
1419 | }; |
1420 | ||
1421 | /* create a new pcm */ | |
1422 | static int soc_new_pcm(struct snd_soc_device *socdev, | |
1423 | struct snd_soc_dai_link *dai_link, int num) | |
1424 | { | |
87689d56 | 1425 | struct snd_soc_card *card = socdev->card; |
6627a653 | 1426 | struct snd_soc_codec *codec = card->codec; |
87689d56 | 1427 | struct snd_soc_platform *platform = card->platform; |
3c4b266f LG |
1428 | struct snd_soc_dai *codec_dai = dai_link->codec_dai; |
1429 | struct snd_soc_dai *cpu_dai = dai_link->cpu_dai; | |
db2a4165 FM |
1430 | struct snd_soc_pcm_runtime *rtd; |
1431 | struct snd_pcm *pcm; | |
1432 | char new_name[64]; | |
1433 | int ret = 0, playback = 0, capture = 0; | |
1434 | ||
1435 | rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime), GFP_KERNEL); | |
1436 | if (rtd == NULL) | |
1437 | return -ENOMEM; | |
cb666e5b LG |
1438 | |
1439 | rtd->dai = dai_link; | |
db2a4165 | 1440 | rtd->socdev = socdev; |
6627a653 | 1441 | codec_dai->codec = card->codec; |
db2a4165 FM |
1442 | |
1443 | /* check client and interface hw capabilities */ | |
40ca1142 MB |
1444 | snprintf(new_name, sizeof(new_name), "%s %s-%d", |
1445 | dai_link->stream_name, codec_dai->name, num); | |
db2a4165 FM |
1446 | |
1447 | if (codec_dai->playback.channels_min) | |
1448 | playback = 1; | |
1449 | if (codec_dai->capture.channels_min) | |
1450 | capture = 1; | |
1451 | ||
1452 | ret = snd_pcm_new(codec->card, new_name, codec->pcm_devs++, playback, | |
1453 | capture, &pcm); | |
1454 | if (ret < 0) { | |
3ff3f64b MB |
1455 | printk(KERN_ERR "asoc: can't create pcm for codec %s\n", |
1456 | codec->name); | |
db2a4165 FM |
1457 | kfree(rtd); |
1458 | return ret; | |
1459 | } | |
1460 | ||
4ccab3e7 | 1461 | dai_link->pcm = pcm; |
db2a4165 | 1462 | pcm->private_data = rtd; |
87689d56 | 1463 | soc_pcm_ops.mmap = platform->pcm_ops->mmap; |
87689d56 MB |
1464 | soc_pcm_ops.ioctl = platform->pcm_ops->ioctl; |
1465 | soc_pcm_ops.copy = platform->pcm_ops->copy; | |
1466 | soc_pcm_ops.silence = platform->pcm_ops->silence; | |
1467 | soc_pcm_ops.ack = platform->pcm_ops->ack; | |
1468 | soc_pcm_ops.page = platform->pcm_ops->page; | |
db2a4165 FM |
1469 | |
1470 | if (playback) | |
1471 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &soc_pcm_ops); | |
1472 | ||
1473 | if (capture) | |
1474 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &soc_pcm_ops); | |
1475 | ||
87689d56 | 1476 | ret = platform->pcm_new(codec->card, codec_dai, pcm); |
db2a4165 FM |
1477 | if (ret < 0) { |
1478 | printk(KERN_ERR "asoc: platform pcm constructor failed\n"); | |
1479 | kfree(rtd); | |
1480 | return ret; | |
1481 | } | |
1482 | ||
87689d56 | 1483 | pcm->private_free = platform->pcm_free; |
db2a4165 FM |
1484 | printk(KERN_INFO "asoc: %s <-> %s mapping ok\n", codec_dai->name, |
1485 | cpu_dai->name); | |
1486 | return ret; | |
1487 | } | |
1488 | ||
096e49d5 MB |
1489 | /** |
1490 | * snd_soc_codec_volatile_register: Report if a register is volatile. | |
1491 | * | |
1492 | * @codec: CODEC to query. | |
1493 | * @reg: Register to query. | |
1494 | * | |
1495 | * Boolean function indiciating if a CODEC register is volatile. | |
1496 | */ | |
1497 | int snd_soc_codec_volatile_register(struct snd_soc_codec *codec, int reg) | |
1498 | { | |
1499 | if (codec->volatile_register) | |
1500 | return codec->volatile_register(reg); | |
1501 | else | |
1502 | return 0; | |
1503 | } | |
1504 | EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register); | |
1505 | ||
db2a4165 FM |
1506 | /** |
1507 | * snd_soc_new_ac97_codec - initailise AC97 device | |
1508 | * @codec: audio codec | |
1509 | * @ops: AC97 bus operations | |
1510 | * @num: AC97 codec number | |
1511 | * | |
1512 | * Initialises AC97 codec resources for use by ad-hoc devices only. | |
1513 | */ | |
1514 | int snd_soc_new_ac97_codec(struct snd_soc_codec *codec, | |
1515 | struct snd_ac97_bus_ops *ops, int num) | |
1516 | { | |
1517 | mutex_lock(&codec->mutex); | |
1518 | ||
1519 | codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL); | |
1520 | if (codec->ac97 == NULL) { | |
1521 | mutex_unlock(&codec->mutex); | |
1522 | return -ENOMEM; | |
1523 | } | |
1524 | ||
1525 | codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL); | |
1526 | if (codec->ac97->bus == NULL) { | |
1527 | kfree(codec->ac97); | |
1528 | codec->ac97 = NULL; | |
1529 | mutex_unlock(&codec->mutex); | |
1530 | return -ENOMEM; | |
1531 | } | |
1532 | ||
1533 | codec->ac97->bus->ops = ops; | |
1534 | codec->ac97->num = num; | |
2718625f | 1535 | codec->dev = &codec->ac97->dev; |
db2a4165 FM |
1536 | mutex_unlock(&codec->mutex); |
1537 | return 0; | |
1538 | } | |
1539 | EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec); | |
1540 | ||
1541 | /** | |
1542 | * snd_soc_free_ac97_codec - free AC97 codec device | |
1543 | * @codec: audio codec | |
1544 | * | |
1545 | * Frees AC97 codec device resources. | |
1546 | */ | |
1547 | void snd_soc_free_ac97_codec(struct snd_soc_codec *codec) | |
1548 | { | |
1549 | mutex_lock(&codec->mutex); | |
1550 | kfree(codec->ac97->bus); | |
1551 | kfree(codec->ac97); | |
1552 | codec->ac97 = NULL; | |
1553 | mutex_unlock(&codec->mutex); | |
1554 | } | |
1555 | EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec); | |
1556 | ||
1557 | /** | |
1558 | * snd_soc_update_bits - update codec register bits | |
1559 | * @codec: audio codec | |
1560 | * @reg: codec register | |
1561 | * @mask: register mask | |
1562 | * @value: new value | |
1563 | * | |
1564 | * Writes new register value. | |
1565 | * | |
1566 | * Returns 1 for change else 0. | |
1567 | */ | |
1568 | int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg, | |
46f5822f | 1569 | unsigned int mask, unsigned int value) |
db2a4165 FM |
1570 | { |
1571 | int change; | |
46f5822f | 1572 | unsigned int old, new; |
db2a4165 | 1573 | |
db2a4165 FM |
1574 | old = snd_soc_read(codec, reg); |
1575 | new = (old & ~mask) | value; | |
1576 | change = old != new; | |
1577 | if (change) | |
1578 | snd_soc_write(codec, reg, new); | |
1579 | ||
db2a4165 FM |
1580 | return change; |
1581 | } | |
1582 | EXPORT_SYMBOL_GPL(snd_soc_update_bits); | |
1583 | ||
6c508c62 EN |
1584 | /** |
1585 | * snd_soc_update_bits_locked - update codec register bits | |
1586 | * @codec: audio codec | |
1587 | * @reg: codec register | |
1588 | * @mask: register mask | |
1589 | * @value: new value | |
1590 | * | |
1591 | * Writes new register value, and takes the codec mutex. | |
1592 | * | |
1593 | * Returns 1 for change else 0. | |
1594 | */ | |
dd1b3d53 MB |
1595 | int snd_soc_update_bits_locked(struct snd_soc_codec *codec, |
1596 | unsigned short reg, unsigned int mask, | |
1597 | unsigned int value) | |
6c508c62 EN |
1598 | { |
1599 | int change; | |
1600 | ||
1601 | mutex_lock(&codec->mutex); | |
1602 | change = snd_soc_update_bits(codec, reg, mask, value); | |
1603 | mutex_unlock(&codec->mutex); | |
1604 | ||
1605 | return change; | |
1606 | } | |
dd1b3d53 | 1607 | EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked); |
6c508c62 | 1608 | |
db2a4165 FM |
1609 | /** |
1610 | * snd_soc_test_bits - test register for change | |
1611 | * @codec: audio codec | |
1612 | * @reg: codec register | |
1613 | * @mask: register mask | |
1614 | * @value: new value | |
1615 | * | |
1616 | * Tests a register with a new value and checks if the new value is | |
1617 | * different from the old value. | |
1618 | * | |
1619 | * Returns 1 for change else 0. | |
1620 | */ | |
1621 | int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg, | |
46f5822f | 1622 | unsigned int mask, unsigned int value) |
db2a4165 FM |
1623 | { |
1624 | int change; | |
46f5822f | 1625 | unsigned int old, new; |
db2a4165 | 1626 | |
db2a4165 FM |
1627 | old = snd_soc_read(codec, reg); |
1628 | new = (old & ~mask) | value; | |
1629 | change = old != new; | |
db2a4165 FM |
1630 | |
1631 | return change; | |
1632 | } | |
1633 | EXPORT_SYMBOL_GPL(snd_soc_test_bits); | |
1634 | ||
db2a4165 FM |
1635 | /** |
1636 | * snd_soc_new_pcms - create new sound card and pcms | |
1637 | * @socdev: the SoC audio device | |
ac11a2b3 MB |
1638 | * @idx: ALSA card index |
1639 | * @xid: card identification | |
db2a4165 FM |
1640 | * |
1641 | * Create a new sound card based upon the codec and interface pcms. | |
1642 | * | |
1643 | * Returns 0 for success, else error. | |
1644 | */ | |
bc7320c5 | 1645 | int snd_soc_new_pcms(struct snd_soc_device *socdev, int idx, const char *xid) |
db2a4165 | 1646 | { |
87506549 | 1647 | struct snd_soc_card *card = socdev->card; |
6627a653 | 1648 | struct snd_soc_codec *codec = card->codec; |
bd7dd77c | 1649 | int ret, i; |
db2a4165 FM |
1650 | |
1651 | mutex_lock(&codec->mutex); | |
1652 | ||
1653 | /* register a sound card */ | |
bd7dd77c TI |
1654 | ret = snd_card_create(idx, xid, codec->owner, 0, &codec->card); |
1655 | if (ret < 0) { | |
db2a4165 FM |
1656 | printk(KERN_ERR "asoc: can't create sound card for codec %s\n", |
1657 | codec->name); | |
1658 | mutex_unlock(&codec->mutex); | |
bd7dd77c | 1659 | return ret; |
db2a4165 FM |
1660 | } |
1661 | ||
452c5eaa | 1662 | codec->socdev = socdev; |
db2a4165 FM |
1663 | codec->card->dev = socdev->dev; |
1664 | codec->card->private_data = codec; | |
1665 | strncpy(codec->card->driver, codec->name, sizeof(codec->card->driver)); | |
1666 | ||
1667 | /* create the pcms */ | |
87506549 MB |
1668 | for (i = 0; i < card->num_links; i++) { |
1669 | ret = soc_new_pcm(socdev, &card->dai_link[i], i); | |
db2a4165 FM |
1670 | if (ret < 0) { |
1671 | printk(KERN_ERR "asoc: can't create pcm %s\n", | |
87506549 | 1672 | card->dai_link[i].stream_name); |
db2a4165 FM |
1673 | mutex_unlock(&codec->mutex); |
1674 | return ret; | |
1675 | } | |
fb48e3c6 GG |
1676 | /* Check for codec->ac97 to handle the ac97.c fun */ |
1677 | if (card->dai_link[i].codec_dai->ac97_control && codec->ac97) { | |
f7732053 BS |
1678 | snd_ac97_dev_add_pdata(codec->ac97, |
1679 | card->dai_link[i].cpu_dai->ac97_pdata); | |
1680 | } | |
db2a4165 FM |
1681 | } |
1682 | ||
1683 | mutex_unlock(&codec->mutex); | |
1684 | return ret; | |
1685 | } | |
1686 | EXPORT_SYMBOL_GPL(snd_soc_new_pcms); | |
1687 | ||
db2a4165 FM |
1688 | /** |
1689 | * snd_soc_free_pcms - free sound card and pcms | |
1690 | * @socdev: the SoC audio device | |
1691 | * | |
1692 | * Frees sound card and pcms associated with the socdev. | |
1693 | * Also unregister the codec if it is an AC97 device. | |
1694 | */ | |
1695 | void snd_soc_free_pcms(struct snd_soc_device *socdev) | |
1696 | { | |
6627a653 | 1697 | struct snd_soc_codec *codec = socdev->card->codec; |
a68660e0 | 1698 | #ifdef CONFIG_SND_SOC_AC97_BUS |
3c4b266f | 1699 | struct snd_soc_dai *codec_dai; |
a68660e0 LG |
1700 | int i; |
1701 | #endif | |
db2a4165 FM |
1702 | |
1703 | mutex_lock(&codec->mutex); | |
6627a653 | 1704 | soc_cleanup_codec_debugfs(codec); |
db2a4165 | 1705 | #ifdef CONFIG_SND_SOC_AC97_BUS |
3ff3f64b | 1706 | for (i = 0; i < codec->num_dai; i++) { |
a68660e0 | 1707 | codec_dai = &codec->dai[i]; |
d2314e0e AN |
1708 | if (codec_dai->ac97_control && codec->ac97 && |
1709 | strcmp(codec->name, "AC97") != 0) { | |
a68660e0 LG |
1710 | soc_ac97_dev_unregister(codec); |
1711 | goto free_card; | |
1712 | } | |
1713 | } | |
1714 | free_card: | |
db2a4165 FM |
1715 | #endif |
1716 | ||
1717 | if (codec->card) | |
1718 | snd_card_free(codec->card); | |
1719 | device_remove_file(socdev->dev, &dev_attr_codec_reg); | |
1720 | mutex_unlock(&codec->mutex); | |
1721 | } | |
1722 | EXPORT_SYMBOL_GPL(snd_soc_free_pcms); | |
1723 | ||
1724 | /** | |
1725 | * snd_soc_set_runtime_hwparams - set the runtime hardware parameters | |
1726 | * @substream: the pcm substream | |
1727 | * @hw: the hardware parameters | |
1728 | * | |
1729 | * Sets the substream runtime hardware parameters. | |
1730 | */ | |
1731 | int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream, | |
1732 | const struct snd_pcm_hardware *hw) | |
1733 | { | |
1734 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1735 | runtime->hw.info = hw->info; | |
1736 | runtime->hw.formats = hw->formats; | |
1737 | runtime->hw.period_bytes_min = hw->period_bytes_min; | |
1738 | runtime->hw.period_bytes_max = hw->period_bytes_max; | |
1739 | runtime->hw.periods_min = hw->periods_min; | |
1740 | runtime->hw.periods_max = hw->periods_max; | |
1741 | runtime->hw.buffer_bytes_max = hw->buffer_bytes_max; | |
1742 | runtime->hw.fifo_size = hw->fifo_size; | |
1743 | return 0; | |
1744 | } | |
1745 | EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams); | |
1746 | ||
1747 | /** | |
1748 | * snd_soc_cnew - create new control | |
1749 | * @_template: control template | |
1750 | * @data: control private data | |
ac11a2b3 | 1751 | * @long_name: control long name |
db2a4165 FM |
1752 | * |
1753 | * Create a new mixer control from a template control. | |
1754 | * | |
1755 | * Returns 0 for success, else error. | |
1756 | */ | |
1757 | struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template, | |
1758 | void *data, char *long_name) | |
1759 | { | |
1760 | struct snd_kcontrol_new template; | |
1761 | ||
1762 | memcpy(&template, _template, sizeof(template)); | |
1763 | if (long_name) | |
1764 | template.name = long_name; | |
db2a4165 FM |
1765 | template.index = 0; |
1766 | ||
1767 | return snd_ctl_new1(&template, data); | |
1768 | } | |
1769 | EXPORT_SYMBOL_GPL(snd_soc_cnew); | |
1770 | ||
3e8e1952 IM |
1771 | /** |
1772 | * snd_soc_add_controls - add an array of controls to a codec. | |
1773 | * Convienience function to add a list of controls. Many codecs were | |
1774 | * duplicating this code. | |
1775 | * | |
1776 | * @codec: codec to add controls to | |
1777 | * @controls: array of controls to add | |
1778 | * @num_controls: number of elements in the array | |
1779 | * | |
1780 | * Return 0 for success, else error. | |
1781 | */ | |
1782 | int snd_soc_add_controls(struct snd_soc_codec *codec, | |
1783 | const struct snd_kcontrol_new *controls, int num_controls) | |
1784 | { | |
1785 | struct snd_card *card = codec->card; | |
1786 | int err, i; | |
1787 | ||
1788 | for (i = 0; i < num_controls; i++) { | |
1789 | const struct snd_kcontrol_new *control = &controls[i]; | |
1790 | err = snd_ctl_add(card, snd_soc_cnew(control, codec, NULL)); | |
1791 | if (err < 0) { | |
1792 | dev_err(codec->dev, "%s: Failed to add %s\n", | |
1793 | codec->name, control->name); | |
1794 | return err; | |
1795 | } | |
1796 | } | |
1797 | ||
1798 | return 0; | |
1799 | } | |
1800 | EXPORT_SYMBOL_GPL(snd_soc_add_controls); | |
1801 | ||
db2a4165 FM |
1802 | /** |
1803 | * snd_soc_info_enum_double - enumerated double mixer info callback | |
1804 | * @kcontrol: mixer control | |
1805 | * @uinfo: control element information | |
1806 | * | |
1807 | * Callback to provide information about a double enumerated | |
1808 | * mixer control. | |
1809 | * | |
1810 | * Returns 0 for success. | |
1811 | */ | |
1812 | int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol, | |
1813 | struct snd_ctl_elem_info *uinfo) | |
1814 | { | |
1815 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1816 | ||
1817 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; | |
1818 | uinfo->count = e->shift_l == e->shift_r ? 1 : 2; | |
f8ba0b7b | 1819 | uinfo->value.enumerated.items = e->max; |
db2a4165 | 1820 | |
f8ba0b7b JS |
1821 | if (uinfo->value.enumerated.item > e->max - 1) |
1822 | uinfo->value.enumerated.item = e->max - 1; | |
db2a4165 FM |
1823 | strcpy(uinfo->value.enumerated.name, |
1824 | e->texts[uinfo->value.enumerated.item]); | |
1825 | return 0; | |
1826 | } | |
1827 | EXPORT_SYMBOL_GPL(snd_soc_info_enum_double); | |
1828 | ||
1829 | /** | |
1830 | * snd_soc_get_enum_double - enumerated double mixer get callback | |
1831 | * @kcontrol: mixer control | |
ac11a2b3 | 1832 | * @ucontrol: control element information |
db2a4165 FM |
1833 | * |
1834 | * Callback to get the value of a double enumerated mixer. | |
1835 | * | |
1836 | * Returns 0 for success. | |
1837 | */ | |
1838 | int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol, | |
1839 | struct snd_ctl_elem_value *ucontrol) | |
1840 | { | |
1841 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1842 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
46f5822f | 1843 | unsigned int val, bitmask; |
db2a4165 | 1844 | |
f8ba0b7b | 1845 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
db2a4165 FM |
1846 | ; |
1847 | val = snd_soc_read(codec, e->reg); | |
3ff3f64b MB |
1848 | ucontrol->value.enumerated.item[0] |
1849 | = (val >> e->shift_l) & (bitmask - 1); | |
db2a4165 FM |
1850 | if (e->shift_l != e->shift_r) |
1851 | ucontrol->value.enumerated.item[1] = | |
1852 | (val >> e->shift_r) & (bitmask - 1); | |
1853 | ||
1854 | return 0; | |
1855 | } | |
1856 | EXPORT_SYMBOL_GPL(snd_soc_get_enum_double); | |
1857 | ||
1858 | /** | |
1859 | * snd_soc_put_enum_double - enumerated double mixer put callback | |
1860 | * @kcontrol: mixer control | |
ac11a2b3 | 1861 | * @ucontrol: control element information |
db2a4165 FM |
1862 | * |
1863 | * Callback to set the value of a double enumerated mixer. | |
1864 | * | |
1865 | * Returns 0 for success. | |
1866 | */ | |
1867 | int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol, | |
1868 | struct snd_ctl_elem_value *ucontrol) | |
1869 | { | |
1870 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1871 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
46f5822f DR |
1872 | unsigned int val; |
1873 | unsigned int mask, bitmask; | |
db2a4165 | 1874 | |
f8ba0b7b | 1875 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
db2a4165 | 1876 | ; |
f8ba0b7b | 1877 | if (ucontrol->value.enumerated.item[0] > e->max - 1) |
db2a4165 FM |
1878 | return -EINVAL; |
1879 | val = ucontrol->value.enumerated.item[0] << e->shift_l; | |
1880 | mask = (bitmask - 1) << e->shift_l; | |
1881 | if (e->shift_l != e->shift_r) { | |
f8ba0b7b | 1882 | if (ucontrol->value.enumerated.item[1] > e->max - 1) |
db2a4165 FM |
1883 | return -EINVAL; |
1884 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
1885 | mask |= (bitmask - 1) << e->shift_r; | |
1886 | } | |
1887 | ||
6c508c62 | 1888 | return snd_soc_update_bits_locked(codec, e->reg, mask, val); |
db2a4165 FM |
1889 | } |
1890 | EXPORT_SYMBOL_GPL(snd_soc_put_enum_double); | |
1891 | ||
2e72f8e3 PU |
1892 | /** |
1893 | * snd_soc_get_value_enum_double - semi enumerated double mixer get callback | |
1894 | * @kcontrol: mixer control | |
1895 | * @ucontrol: control element information | |
1896 | * | |
1897 | * Callback to get the value of a double semi enumerated mixer. | |
1898 | * | |
1899 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
1900 | * used for handling bitfield coded enumeration for example. | |
1901 | * | |
1902 | * Returns 0 for success. | |
1903 | */ | |
1904 | int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol, | |
1905 | struct snd_ctl_elem_value *ucontrol) | |
1906 | { | |
1907 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
74155556 | 1908 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f | 1909 | unsigned int reg_val, val, mux; |
2e72f8e3 PU |
1910 | |
1911 | reg_val = snd_soc_read(codec, e->reg); | |
1912 | val = (reg_val >> e->shift_l) & e->mask; | |
1913 | for (mux = 0; mux < e->max; mux++) { | |
1914 | if (val == e->values[mux]) | |
1915 | break; | |
1916 | } | |
1917 | ucontrol->value.enumerated.item[0] = mux; | |
1918 | if (e->shift_l != e->shift_r) { | |
1919 | val = (reg_val >> e->shift_r) & e->mask; | |
1920 | for (mux = 0; mux < e->max; mux++) { | |
1921 | if (val == e->values[mux]) | |
1922 | break; | |
1923 | } | |
1924 | ucontrol->value.enumerated.item[1] = mux; | |
1925 | } | |
1926 | ||
1927 | return 0; | |
1928 | } | |
1929 | EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double); | |
1930 | ||
1931 | /** | |
1932 | * snd_soc_put_value_enum_double - semi enumerated double mixer put callback | |
1933 | * @kcontrol: mixer control | |
1934 | * @ucontrol: control element information | |
1935 | * | |
1936 | * Callback to set the value of a double semi enumerated mixer. | |
1937 | * | |
1938 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
1939 | * used for handling bitfield coded enumeration for example. | |
1940 | * | |
1941 | * Returns 0 for success. | |
1942 | */ | |
1943 | int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol, | |
1944 | struct snd_ctl_elem_value *ucontrol) | |
1945 | { | |
1946 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
74155556 | 1947 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f DR |
1948 | unsigned int val; |
1949 | unsigned int mask; | |
2e72f8e3 PU |
1950 | |
1951 | if (ucontrol->value.enumerated.item[0] > e->max - 1) | |
1952 | return -EINVAL; | |
1953 | val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l; | |
1954 | mask = e->mask << e->shift_l; | |
1955 | if (e->shift_l != e->shift_r) { | |
1956 | if (ucontrol->value.enumerated.item[1] > e->max - 1) | |
1957 | return -EINVAL; | |
1958 | val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r; | |
1959 | mask |= e->mask << e->shift_r; | |
1960 | } | |
1961 | ||
6c508c62 | 1962 | return snd_soc_update_bits_locked(codec, e->reg, mask, val); |
2e72f8e3 PU |
1963 | } |
1964 | EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double); | |
1965 | ||
db2a4165 FM |
1966 | /** |
1967 | * snd_soc_info_enum_ext - external enumerated single mixer info callback | |
1968 | * @kcontrol: mixer control | |
1969 | * @uinfo: control element information | |
1970 | * | |
1971 | * Callback to provide information about an external enumerated | |
1972 | * single mixer. | |
1973 | * | |
1974 | * Returns 0 for success. | |
1975 | */ | |
1976 | int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol, | |
1977 | struct snd_ctl_elem_info *uinfo) | |
1978 | { | |
1979 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1980 | ||
1981 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; | |
1982 | uinfo->count = 1; | |
f8ba0b7b | 1983 | uinfo->value.enumerated.items = e->max; |
db2a4165 | 1984 | |
f8ba0b7b JS |
1985 | if (uinfo->value.enumerated.item > e->max - 1) |
1986 | uinfo->value.enumerated.item = e->max - 1; | |
db2a4165 FM |
1987 | strcpy(uinfo->value.enumerated.name, |
1988 | e->texts[uinfo->value.enumerated.item]); | |
1989 | return 0; | |
1990 | } | |
1991 | EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext); | |
1992 | ||
1993 | /** | |
1994 | * snd_soc_info_volsw_ext - external single mixer info callback | |
1995 | * @kcontrol: mixer control | |
1996 | * @uinfo: control element information | |
1997 | * | |
1998 | * Callback to provide information about a single external mixer control. | |
1999 | * | |
2000 | * Returns 0 for success. | |
2001 | */ | |
2002 | int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol, | |
2003 | struct snd_ctl_elem_info *uinfo) | |
2004 | { | |
a7a4ac86 PZ |
2005 | int max = kcontrol->private_value; |
2006 | ||
fd5dfad9 | 2007 | if (max == 1 && !strstr(kcontrol->id.name, " Volume")) |
a7a4ac86 PZ |
2008 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; |
2009 | else | |
2010 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
db2a4165 | 2011 | |
db2a4165 FM |
2012 | uinfo->count = 1; |
2013 | uinfo->value.integer.min = 0; | |
a7a4ac86 | 2014 | uinfo->value.integer.max = max; |
db2a4165 FM |
2015 | return 0; |
2016 | } | |
2017 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext); | |
2018 | ||
db2a4165 FM |
2019 | /** |
2020 | * snd_soc_info_volsw - single mixer info callback | |
2021 | * @kcontrol: mixer control | |
2022 | * @uinfo: control element information | |
2023 | * | |
2024 | * Callback to provide information about a single mixer control. | |
2025 | * | |
2026 | * Returns 0 for success. | |
2027 | */ | |
2028 | int snd_soc_info_volsw(struct snd_kcontrol *kcontrol, | |
2029 | struct snd_ctl_elem_info *uinfo) | |
2030 | { | |
4eaa9819 JS |
2031 | struct soc_mixer_control *mc = |
2032 | (struct soc_mixer_control *)kcontrol->private_value; | |
d11bb4a9 | 2033 | int platform_max; |
762b8df7 | 2034 | unsigned int shift = mc->shift; |
815ecf8d | 2035 | unsigned int rshift = mc->rshift; |
db2a4165 | 2036 | |
d11bb4a9 PU |
2037 | if (!mc->platform_max) |
2038 | mc->platform_max = mc->max; | |
2039 | platform_max = mc->platform_max; | |
2040 | ||
2041 | if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume")) | |
a7a4ac86 PZ |
2042 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; |
2043 | else | |
2044 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
2045 | ||
db2a4165 FM |
2046 | uinfo->count = shift == rshift ? 1 : 2; |
2047 | uinfo->value.integer.min = 0; | |
d11bb4a9 | 2048 | uinfo->value.integer.max = platform_max; |
db2a4165 FM |
2049 | return 0; |
2050 | } | |
2051 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw); | |
2052 | ||
2053 | /** | |
2054 | * snd_soc_get_volsw - single mixer get callback | |
2055 | * @kcontrol: mixer control | |
ac11a2b3 | 2056 | * @ucontrol: control element information |
db2a4165 FM |
2057 | * |
2058 | * Callback to get the value of a single mixer control. | |
2059 | * | |
2060 | * Returns 0 for success. | |
2061 | */ | |
2062 | int snd_soc_get_volsw(struct snd_kcontrol *kcontrol, | |
2063 | struct snd_ctl_elem_value *ucontrol) | |
2064 | { | |
4eaa9819 JS |
2065 | struct soc_mixer_control *mc = |
2066 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 2067 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
2068 | unsigned int reg = mc->reg; |
2069 | unsigned int shift = mc->shift; | |
2070 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 2071 | int max = mc->max; |
815ecf8d JS |
2072 | unsigned int mask = (1 << fls(max)) - 1; |
2073 | unsigned int invert = mc->invert; | |
db2a4165 FM |
2074 | |
2075 | ucontrol->value.integer.value[0] = | |
2076 | (snd_soc_read(codec, reg) >> shift) & mask; | |
2077 | if (shift != rshift) | |
2078 | ucontrol->value.integer.value[1] = | |
2079 | (snd_soc_read(codec, reg) >> rshift) & mask; | |
2080 | if (invert) { | |
2081 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 2082 | max - ucontrol->value.integer.value[0]; |
db2a4165 FM |
2083 | if (shift != rshift) |
2084 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 2085 | max - ucontrol->value.integer.value[1]; |
db2a4165 FM |
2086 | } |
2087 | ||
2088 | return 0; | |
2089 | } | |
2090 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw); | |
2091 | ||
2092 | /** | |
2093 | * snd_soc_put_volsw - single mixer put callback | |
2094 | * @kcontrol: mixer control | |
ac11a2b3 | 2095 | * @ucontrol: control element information |
db2a4165 FM |
2096 | * |
2097 | * Callback to set the value of a single mixer control. | |
2098 | * | |
2099 | * Returns 0 for success. | |
2100 | */ | |
2101 | int snd_soc_put_volsw(struct snd_kcontrol *kcontrol, | |
2102 | struct snd_ctl_elem_value *ucontrol) | |
2103 | { | |
4eaa9819 JS |
2104 | struct soc_mixer_control *mc = |
2105 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 2106 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
2107 | unsigned int reg = mc->reg; |
2108 | unsigned int shift = mc->shift; | |
2109 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 2110 | int max = mc->max; |
815ecf8d JS |
2111 | unsigned int mask = (1 << fls(max)) - 1; |
2112 | unsigned int invert = mc->invert; | |
46f5822f | 2113 | unsigned int val, val2, val_mask; |
db2a4165 FM |
2114 | |
2115 | val = (ucontrol->value.integer.value[0] & mask); | |
2116 | if (invert) | |
a7a4ac86 | 2117 | val = max - val; |
db2a4165 FM |
2118 | val_mask = mask << shift; |
2119 | val = val << shift; | |
2120 | if (shift != rshift) { | |
2121 | val2 = (ucontrol->value.integer.value[1] & mask); | |
2122 | if (invert) | |
a7a4ac86 | 2123 | val2 = max - val2; |
db2a4165 FM |
2124 | val_mask |= mask << rshift; |
2125 | val |= val2 << rshift; | |
2126 | } | |
6c508c62 | 2127 | return snd_soc_update_bits_locked(codec, reg, val_mask, val); |
db2a4165 FM |
2128 | } |
2129 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw); | |
2130 | ||
2131 | /** | |
2132 | * snd_soc_info_volsw_2r - double mixer info callback | |
2133 | * @kcontrol: mixer control | |
2134 | * @uinfo: control element information | |
2135 | * | |
2136 | * Callback to provide information about a double mixer control that | |
2137 | * spans 2 codec registers. | |
2138 | * | |
2139 | * Returns 0 for success. | |
2140 | */ | |
2141 | int snd_soc_info_volsw_2r(struct snd_kcontrol *kcontrol, | |
2142 | struct snd_ctl_elem_info *uinfo) | |
2143 | { | |
4eaa9819 JS |
2144 | struct soc_mixer_control *mc = |
2145 | (struct soc_mixer_control *)kcontrol->private_value; | |
d11bb4a9 | 2146 | int platform_max; |
a7a4ac86 | 2147 | |
d11bb4a9 PU |
2148 | if (!mc->platform_max) |
2149 | mc->platform_max = mc->max; | |
2150 | platform_max = mc->platform_max; | |
2151 | ||
2152 | if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume")) | |
a7a4ac86 PZ |
2153 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; |
2154 | else | |
2155 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
db2a4165 | 2156 | |
db2a4165 FM |
2157 | uinfo->count = 2; |
2158 | uinfo->value.integer.min = 0; | |
d11bb4a9 | 2159 | uinfo->value.integer.max = platform_max; |
db2a4165 FM |
2160 | return 0; |
2161 | } | |
2162 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r); | |
2163 | ||
2164 | /** | |
2165 | * snd_soc_get_volsw_2r - double mixer get callback | |
2166 | * @kcontrol: mixer control | |
ac11a2b3 | 2167 | * @ucontrol: control element information |
db2a4165 FM |
2168 | * |
2169 | * Callback to get the value of a double mixer control that spans 2 registers. | |
2170 | * | |
2171 | * Returns 0 for success. | |
2172 | */ | |
2173 | int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol, | |
2174 | struct snd_ctl_elem_value *ucontrol) | |
2175 | { | |
4eaa9819 JS |
2176 | struct soc_mixer_control *mc = |
2177 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 2178 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
2179 | unsigned int reg = mc->reg; |
2180 | unsigned int reg2 = mc->rreg; | |
2181 | unsigned int shift = mc->shift; | |
4eaa9819 | 2182 | int max = mc->max; |
46f5822f | 2183 | unsigned int mask = (1 << fls(max)) - 1; |
815ecf8d | 2184 | unsigned int invert = mc->invert; |
db2a4165 FM |
2185 | |
2186 | ucontrol->value.integer.value[0] = | |
2187 | (snd_soc_read(codec, reg) >> shift) & mask; | |
2188 | ucontrol->value.integer.value[1] = | |
2189 | (snd_soc_read(codec, reg2) >> shift) & mask; | |
2190 | if (invert) { | |
2191 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 2192 | max - ucontrol->value.integer.value[0]; |
db2a4165 | 2193 | ucontrol->value.integer.value[1] = |
a7a4ac86 | 2194 | max - ucontrol->value.integer.value[1]; |
db2a4165 FM |
2195 | } |
2196 | ||
2197 | return 0; | |
2198 | } | |
2199 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r); | |
2200 | ||
2201 | /** | |
2202 | * snd_soc_put_volsw_2r - double mixer set callback | |
2203 | * @kcontrol: mixer control | |
ac11a2b3 | 2204 | * @ucontrol: control element information |
db2a4165 FM |
2205 | * |
2206 | * Callback to set the value of a double mixer control that spans 2 registers. | |
2207 | * | |
2208 | * Returns 0 for success. | |
2209 | */ | |
2210 | int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol, | |
2211 | struct snd_ctl_elem_value *ucontrol) | |
2212 | { | |
4eaa9819 JS |
2213 | struct soc_mixer_control *mc = |
2214 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 2215 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
2216 | unsigned int reg = mc->reg; |
2217 | unsigned int reg2 = mc->rreg; | |
2218 | unsigned int shift = mc->shift; | |
4eaa9819 | 2219 | int max = mc->max; |
815ecf8d JS |
2220 | unsigned int mask = (1 << fls(max)) - 1; |
2221 | unsigned int invert = mc->invert; | |
db2a4165 | 2222 | int err; |
46f5822f | 2223 | unsigned int val, val2, val_mask; |
db2a4165 FM |
2224 | |
2225 | val_mask = mask << shift; | |
2226 | val = (ucontrol->value.integer.value[0] & mask); | |
2227 | val2 = (ucontrol->value.integer.value[1] & mask); | |
2228 | ||
2229 | if (invert) { | |
a7a4ac86 PZ |
2230 | val = max - val; |
2231 | val2 = max - val2; | |
db2a4165 FM |
2232 | } |
2233 | ||
2234 | val = val << shift; | |
2235 | val2 = val2 << shift; | |
2236 | ||
6c508c62 | 2237 | err = snd_soc_update_bits_locked(codec, reg, val_mask, val); |
3ff3f64b | 2238 | if (err < 0) |
db2a4165 FM |
2239 | return err; |
2240 | ||
6c508c62 | 2241 | err = snd_soc_update_bits_locked(codec, reg2, val_mask, val2); |
db2a4165 FM |
2242 | return err; |
2243 | } | |
2244 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r); | |
2245 | ||
e13ac2e9 MB |
2246 | /** |
2247 | * snd_soc_info_volsw_s8 - signed mixer info callback | |
2248 | * @kcontrol: mixer control | |
2249 | * @uinfo: control element information | |
2250 | * | |
2251 | * Callback to provide information about a signed mixer control. | |
2252 | * | |
2253 | * Returns 0 for success. | |
2254 | */ | |
2255 | int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol, | |
2256 | struct snd_ctl_elem_info *uinfo) | |
2257 | { | |
4eaa9819 JS |
2258 | struct soc_mixer_control *mc = |
2259 | (struct soc_mixer_control *)kcontrol->private_value; | |
d11bb4a9 | 2260 | int platform_max; |
4eaa9819 | 2261 | int min = mc->min; |
e13ac2e9 | 2262 | |
d11bb4a9 PU |
2263 | if (!mc->platform_max) |
2264 | mc->platform_max = mc->max; | |
2265 | platform_max = mc->platform_max; | |
2266 | ||
e13ac2e9 MB |
2267 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
2268 | uinfo->count = 2; | |
2269 | uinfo->value.integer.min = 0; | |
d11bb4a9 | 2270 | uinfo->value.integer.max = platform_max - min; |
e13ac2e9 MB |
2271 | return 0; |
2272 | } | |
2273 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8); | |
2274 | ||
2275 | /** | |
2276 | * snd_soc_get_volsw_s8 - signed mixer get callback | |
2277 | * @kcontrol: mixer control | |
ac11a2b3 | 2278 | * @ucontrol: control element information |
e13ac2e9 MB |
2279 | * |
2280 | * Callback to get the value of a signed mixer control. | |
2281 | * | |
2282 | * Returns 0 for success. | |
2283 | */ | |
2284 | int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol, | |
2285 | struct snd_ctl_elem_value *ucontrol) | |
2286 | { | |
4eaa9819 JS |
2287 | struct soc_mixer_control *mc = |
2288 | (struct soc_mixer_control *)kcontrol->private_value; | |
e13ac2e9 | 2289 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d | 2290 | unsigned int reg = mc->reg; |
4eaa9819 | 2291 | int min = mc->min; |
e13ac2e9 MB |
2292 | int val = snd_soc_read(codec, reg); |
2293 | ||
2294 | ucontrol->value.integer.value[0] = | |
2295 | ((signed char)(val & 0xff))-min; | |
2296 | ucontrol->value.integer.value[1] = | |
2297 | ((signed char)((val >> 8) & 0xff))-min; | |
2298 | return 0; | |
2299 | } | |
2300 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8); | |
2301 | ||
2302 | /** | |
2303 | * snd_soc_put_volsw_sgn - signed mixer put callback | |
2304 | * @kcontrol: mixer control | |
ac11a2b3 | 2305 | * @ucontrol: control element information |
e13ac2e9 MB |
2306 | * |
2307 | * Callback to set the value of a signed mixer control. | |
2308 | * | |
2309 | * Returns 0 for success. | |
2310 | */ | |
2311 | int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol, | |
2312 | struct snd_ctl_elem_value *ucontrol) | |
2313 | { | |
4eaa9819 JS |
2314 | struct soc_mixer_control *mc = |
2315 | (struct soc_mixer_control *)kcontrol->private_value; | |
e13ac2e9 | 2316 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d | 2317 | unsigned int reg = mc->reg; |
4eaa9819 | 2318 | int min = mc->min; |
46f5822f | 2319 | unsigned int val; |
e13ac2e9 MB |
2320 | |
2321 | val = (ucontrol->value.integer.value[0]+min) & 0xff; | |
2322 | val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8; | |
2323 | ||
6c508c62 | 2324 | return snd_soc_update_bits_locked(codec, reg, 0xffff, val); |
e13ac2e9 MB |
2325 | } |
2326 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8); | |
2327 | ||
637d3847 PU |
2328 | /** |
2329 | * snd_soc_limit_volume - Set new limit to an existing volume control. | |
2330 | * | |
2331 | * @codec: where to look for the control | |
2332 | * @name: Name of the control | |
2333 | * @max: new maximum limit | |
2334 | * | |
2335 | * Return 0 for success, else error. | |
2336 | */ | |
2337 | int snd_soc_limit_volume(struct snd_soc_codec *codec, | |
2338 | const char *name, int max) | |
2339 | { | |
2340 | struct snd_card *card = codec->card; | |
2341 | struct snd_kcontrol *kctl; | |
2342 | struct soc_mixer_control *mc; | |
2343 | int found = 0; | |
2344 | int ret = -EINVAL; | |
2345 | ||
2346 | /* Sanity check for name and max */ | |
2347 | if (unlikely(!name || max <= 0)) | |
2348 | return -EINVAL; | |
2349 | ||
2350 | list_for_each_entry(kctl, &card->controls, list) { | |
2351 | if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) { | |
2352 | found = 1; | |
2353 | break; | |
2354 | } | |
2355 | } | |
2356 | if (found) { | |
2357 | mc = (struct soc_mixer_control *)kctl->private_value; | |
2358 | if (max <= mc->max) { | |
d11bb4a9 | 2359 | mc->platform_max = max; |
637d3847 PU |
2360 | ret = 0; |
2361 | } | |
2362 | } | |
2363 | return ret; | |
2364 | } | |
2365 | EXPORT_SYMBOL_GPL(snd_soc_limit_volume); | |
2366 | ||
b6f4bb38 | 2367 | /** |
2368 | * snd_soc_info_volsw_2r_sx - double with tlv and variable data size | |
2369 | * mixer info callback | |
2370 | * @kcontrol: mixer control | |
2371 | * @uinfo: control element information | |
2372 | * | |
2373 | * Returns 0 for success. | |
2374 | */ | |
2375 | int snd_soc_info_volsw_2r_sx(struct snd_kcontrol *kcontrol, | |
2376 | struct snd_ctl_elem_info *uinfo) | |
2377 | { | |
2378 | struct soc_mixer_control *mc = | |
2379 | (struct soc_mixer_control *)kcontrol->private_value; | |
2380 | int max = mc->max; | |
2381 | int min = mc->min; | |
2382 | ||
2383 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
2384 | uinfo->count = 2; | |
2385 | uinfo->value.integer.min = 0; | |
2386 | uinfo->value.integer.max = max-min; | |
2387 | ||
2388 | return 0; | |
2389 | } | |
2390 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r_sx); | |
2391 | ||
2392 | /** | |
2393 | * snd_soc_get_volsw_2r_sx - double with tlv and variable data size | |
2394 | * mixer get callback | |
2395 | * @kcontrol: mixer control | |
2396 | * @uinfo: control element information | |
2397 | * | |
2398 | * Returns 0 for success. | |
2399 | */ | |
2400 | int snd_soc_get_volsw_2r_sx(struct snd_kcontrol *kcontrol, | |
2401 | struct snd_ctl_elem_value *ucontrol) | |
2402 | { | |
2403 | struct soc_mixer_control *mc = | |
2404 | (struct soc_mixer_control *)kcontrol->private_value; | |
2405 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
2406 | unsigned int mask = (1<<mc->shift)-1; | |
2407 | int min = mc->min; | |
2408 | int val = snd_soc_read(codec, mc->reg) & mask; | |
2409 | int valr = snd_soc_read(codec, mc->rreg) & mask; | |
2410 | ||
20630c7f SL |
2411 | ucontrol->value.integer.value[0] = ((val & 0xff)-min) & mask; |
2412 | ucontrol->value.integer.value[1] = ((valr & 0xff)-min) & mask; | |
b6f4bb38 | 2413 | return 0; |
2414 | } | |
2415 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r_sx); | |
2416 | ||
2417 | /** | |
2418 | * snd_soc_put_volsw_2r_sx - double with tlv and variable data size | |
2419 | * mixer put callback | |
2420 | * @kcontrol: mixer control | |
2421 | * @uinfo: control element information | |
2422 | * | |
2423 | * Returns 0 for success. | |
2424 | */ | |
2425 | int snd_soc_put_volsw_2r_sx(struct snd_kcontrol *kcontrol, | |
2426 | struct snd_ctl_elem_value *ucontrol) | |
2427 | { | |
2428 | struct soc_mixer_control *mc = | |
2429 | (struct soc_mixer_control *)kcontrol->private_value; | |
2430 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
2431 | unsigned int mask = (1<<mc->shift)-1; | |
2432 | int min = mc->min; | |
2433 | int ret; | |
2434 | unsigned int val, valr, oval, ovalr; | |
2435 | ||
2436 | val = ((ucontrol->value.integer.value[0]+min) & 0xff); | |
2437 | val &= mask; | |
2438 | valr = ((ucontrol->value.integer.value[1]+min) & 0xff); | |
2439 | valr &= mask; | |
2440 | ||
2441 | oval = snd_soc_read(codec, mc->reg) & mask; | |
2442 | ovalr = snd_soc_read(codec, mc->rreg) & mask; | |
2443 | ||
2444 | ret = 0; | |
2445 | if (oval != val) { | |
2446 | ret = snd_soc_write(codec, mc->reg, val); | |
2447 | if (ret < 0) | |
f1df5aec | 2448 | return ret; |
b6f4bb38 | 2449 | } |
2450 | if (ovalr != valr) { | |
2451 | ret = snd_soc_write(codec, mc->rreg, valr); | |
2452 | if (ret < 0) | |
f1df5aec | 2453 | return ret; |
b6f4bb38 | 2454 | } |
2455 | ||
2456 | return 0; | |
2457 | } | |
2458 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r_sx); | |
2459 | ||
8c6529db LG |
2460 | /** |
2461 | * snd_soc_dai_set_sysclk - configure DAI system or master clock. | |
2462 | * @dai: DAI | |
2463 | * @clk_id: DAI specific clock ID | |
2464 | * @freq: new clock frequency in Hz | |
2465 | * @dir: new clock direction - input/output. | |
2466 | * | |
2467 | * Configures the DAI master (MCLK) or system (SYSCLK) clocking. | |
2468 | */ | |
2469 | int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id, | |
2470 | unsigned int freq, int dir) | |
2471 | { | |
3f1a4d82 | 2472 | if (dai->ops && dai->ops->set_sysclk) |
6335d055 | 2473 | return dai->ops->set_sysclk(dai, clk_id, freq, dir); |
8c6529db LG |
2474 | else |
2475 | return -EINVAL; | |
2476 | } | |
2477 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk); | |
2478 | ||
2479 | /** | |
2480 | * snd_soc_dai_set_clkdiv - configure DAI clock dividers. | |
2481 | * @dai: DAI | |
ac11a2b3 | 2482 | * @div_id: DAI specific clock divider ID |
8c6529db LG |
2483 | * @div: new clock divisor. |
2484 | * | |
2485 | * Configures the clock dividers. This is used to derive the best DAI bit and | |
2486 | * frame clocks from the system or master clock. It's best to set the DAI bit | |
2487 | * and frame clocks as low as possible to save system power. | |
2488 | */ | |
2489 | int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai, | |
2490 | int div_id, int div) | |
2491 | { | |
3f1a4d82 | 2492 | if (dai->ops && dai->ops->set_clkdiv) |
6335d055 | 2493 | return dai->ops->set_clkdiv(dai, div_id, div); |
8c6529db LG |
2494 | else |
2495 | return -EINVAL; | |
2496 | } | |
2497 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv); | |
2498 | ||
2499 | /** | |
2500 | * snd_soc_dai_set_pll - configure DAI PLL. | |
2501 | * @dai: DAI | |
2502 | * @pll_id: DAI specific PLL ID | |
85488037 | 2503 | * @source: DAI specific source for the PLL |
8c6529db LG |
2504 | * @freq_in: PLL input clock frequency in Hz |
2505 | * @freq_out: requested PLL output clock frequency in Hz | |
2506 | * | |
2507 | * Configures and enables PLL to generate output clock based on input clock. | |
2508 | */ | |
85488037 MB |
2509 | int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source, |
2510 | unsigned int freq_in, unsigned int freq_out) | |
8c6529db | 2511 | { |
3f1a4d82 | 2512 | if (dai->ops && dai->ops->set_pll) |
85488037 MB |
2513 | return dai->ops->set_pll(dai, pll_id, source, |
2514 | freq_in, freq_out); | |
8c6529db LG |
2515 | else |
2516 | return -EINVAL; | |
2517 | } | |
2518 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll); | |
2519 | ||
2520 | /** | |
2521 | * snd_soc_dai_set_fmt - configure DAI hardware audio format. | |
2522 | * @dai: DAI | |
8c6529db LG |
2523 | * @fmt: SND_SOC_DAIFMT_ format value. |
2524 | * | |
2525 | * Configures the DAI hardware format and clocking. | |
2526 | */ | |
2527 | int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) | |
2528 | { | |
3f1a4d82 | 2529 | if (dai->ops && dai->ops->set_fmt) |
6335d055 | 2530 | return dai->ops->set_fmt(dai, fmt); |
8c6529db LG |
2531 | else |
2532 | return -EINVAL; | |
2533 | } | |
2534 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt); | |
2535 | ||
2536 | /** | |
2537 | * snd_soc_dai_set_tdm_slot - configure DAI TDM. | |
2538 | * @dai: DAI | |
a5479e38 DR |
2539 | * @tx_mask: bitmask representing active TX slots. |
2540 | * @rx_mask: bitmask representing active RX slots. | |
8c6529db | 2541 | * @slots: Number of slots in use. |
a5479e38 | 2542 | * @slot_width: Width in bits for each slot. |
8c6529db LG |
2543 | * |
2544 | * Configures a DAI for TDM operation. Both mask and slots are codec and DAI | |
2545 | * specific. | |
2546 | */ | |
2547 | int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai, | |
a5479e38 | 2548 | unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width) |
8c6529db | 2549 | { |
3f1a4d82 | 2550 | if (dai->ops && dai->ops->set_tdm_slot) |
a5479e38 DR |
2551 | return dai->ops->set_tdm_slot(dai, tx_mask, rx_mask, |
2552 | slots, slot_width); | |
8c6529db LG |
2553 | else |
2554 | return -EINVAL; | |
2555 | } | |
2556 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot); | |
2557 | ||
472df3cb BS |
2558 | /** |
2559 | * snd_soc_dai_set_channel_map - configure DAI audio channel map | |
2560 | * @dai: DAI | |
2561 | * @tx_num: how many TX channels | |
2562 | * @tx_slot: pointer to an array which imply the TX slot number channel | |
2563 | * 0~num-1 uses | |
2564 | * @rx_num: how many RX channels | |
2565 | * @rx_slot: pointer to an array which imply the RX slot number channel | |
2566 | * 0~num-1 uses | |
2567 | * | |
2568 | * configure the relationship between channel number and TDM slot number. | |
2569 | */ | |
2570 | int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai, | |
2571 | unsigned int tx_num, unsigned int *tx_slot, | |
2572 | unsigned int rx_num, unsigned int *rx_slot) | |
2573 | { | |
2574 | if (dai->ops && dai->ops->set_channel_map) | |
2575 | return dai->ops->set_channel_map(dai, tx_num, tx_slot, | |
2576 | rx_num, rx_slot); | |
2577 | else | |
2578 | return -EINVAL; | |
2579 | } | |
2580 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map); | |
2581 | ||
8c6529db LG |
2582 | /** |
2583 | * snd_soc_dai_set_tristate - configure DAI system or master clock. | |
2584 | * @dai: DAI | |
2585 | * @tristate: tristate enable | |
2586 | * | |
2587 | * Tristates the DAI so that others can use it. | |
2588 | */ | |
2589 | int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate) | |
2590 | { | |
3f1a4d82 | 2591 | if (dai->ops && dai->ops->set_tristate) |
6335d055 | 2592 | return dai->ops->set_tristate(dai, tristate); |
8c6529db LG |
2593 | else |
2594 | return -EINVAL; | |
2595 | } | |
2596 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate); | |
2597 | ||
2598 | /** | |
2599 | * snd_soc_dai_digital_mute - configure DAI system or master clock. | |
2600 | * @dai: DAI | |
2601 | * @mute: mute enable | |
2602 | * | |
2603 | * Mutes the DAI DAC. | |
2604 | */ | |
2605 | int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute) | |
2606 | { | |
3f1a4d82 | 2607 | if (dai->ops && dai->ops->digital_mute) |
6335d055 | 2608 | return dai->ops->digital_mute(dai, mute); |
8c6529db LG |
2609 | else |
2610 | return -EINVAL; | |
2611 | } | |
2612 | EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute); | |
2613 | ||
c5af3a2e MB |
2614 | /** |
2615 | * snd_soc_register_card - Register a card with the ASoC core | |
2616 | * | |
ac11a2b3 | 2617 | * @card: Card to register |
c5af3a2e MB |
2618 | * |
2619 | * Note that currently this is an internal only function: it will be | |
2620 | * exposed to machine drivers after further backporting of ASoC v2 | |
2621 | * registration APIs. | |
2622 | */ | |
2623 | static int snd_soc_register_card(struct snd_soc_card *card) | |
2624 | { | |
2625 | if (!card->name || !card->dev) | |
2626 | return -EINVAL; | |
2627 | ||
2628 | INIT_LIST_HEAD(&card->list); | |
2629 | card->instantiated = 0; | |
2630 | ||
2631 | mutex_lock(&client_mutex); | |
2632 | list_add(&card->list, &card_list); | |
435c5e25 | 2633 | snd_soc_instantiate_cards(); |
c5af3a2e MB |
2634 | mutex_unlock(&client_mutex); |
2635 | ||
2636 | dev_dbg(card->dev, "Registered card '%s'\n", card->name); | |
2637 | ||
2638 | return 0; | |
2639 | } | |
2640 | ||
2641 | /** | |
2642 | * snd_soc_unregister_card - Unregister a card with the ASoC core | |
2643 | * | |
ac11a2b3 | 2644 | * @card: Card to unregister |
c5af3a2e MB |
2645 | * |
2646 | * Note that currently this is an internal only function: it will be | |
2647 | * exposed to machine drivers after further backporting of ASoC v2 | |
2648 | * registration APIs. | |
2649 | */ | |
2650 | static int snd_soc_unregister_card(struct snd_soc_card *card) | |
2651 | { | |
2652 | mutex_lock(&client_mutex); | |
2653 | list_del(&card->list); | |
2654 | mutex_unlock(&client_mutex); | |
2655 | ||
2656 | dev_dbg(card->dev, "Unregistered card '%s'\n", card->name); | |
2657 | ||
2658 | return 0; | |
2659 | } | |
2660 | ||
9115171a MB |
2661 | /** |
2662 | * snd_soc_register_dai - Register a DAI with the ASoC core | |
2663 | * | |
ac11a2b3 | 2664 | * @dai: DAI to register |
9115171a MB |
2665 | */ |
2666 | int snd_soc_register_dai(struct snd_soc_dai *dai) | |
2667 | { | |
2668 | if (!dai->name) | |
2669 | return -EINVAL; | |
2670 | ||
2671 | /* The device should become mandatory over time */ | |
2672 | if (!dai->dev) | |
2673 | printk(KERN_WARNING "No device for DAI %s\n", dai->name); | |
2674 | ||
6335d055 EM |
2675 | if (!dai->ops) |
2676 | dai->ops = &null_dai_ops; | |
2677 | ||
9115171a MB |
2678 | INIT_LIST_HEAD(&dai->list); |
2679 | ||
2680 | mutex_lock(&client_mutex); | |
2681 | list_add(&dai->list, &dai_list); | |
435c5e25 | 2682 | snd_soc_instantiate_cards(); |
9115171a MB |
2683 | mutex_unlock(&client_mutex); |
2684 | ||
2685 | pr_debug("Registered DAI '%s'\n", dai->name); | |
2686 | ||
2687 | return 0; | |
2688 | } | |
2689 | EXPORT_SYMBOL_GPL(snd_soc_register_dai); | |
2690 | ||
2691 | /** | |
2692 | * snd_soc_unregister_dai - Unregister a DAI from the ASoC core | |
2693 | * | |
ac11a2b3 | 2694 | * @dai: DAI to unregister |
9115171a MB |
2695 | */ |
2696 | void snd_soc_unregister_dai(struct snd_soc_dai *dai) | |
2697 | { | |
2698 | mutex_lock(&client_mutex); | |
2699 | list_del(&dai->list); | |
2700 | mutex_unlock(&client_mutex); | |
2701 | ||
2702 | pr_debug("Unregistered DAI '%s'\n", dai->name); | |
2703 | } | |
2704 | EXPORT_SYMBOL_GPL(snd_soc_unregister_dai); | |
2705 | ||
2706 | /** | |
2707 | * snd_soc_register_dais - Register multiple DAIs with the ASoC core | |
2708 | * | |
ac11a2b3 MB |
2709 | * @dai: Array of DAIs to register |
2710 | * @count: Number of DAIs | |
9115171a MB |
2711 | */ |
2712 | int snd_soc_register_dais(struct snd_soc_dai *dai, size_t count) | |
2713 | { | |
2714 | int i, ret; | |
2715 | ||
2716 | for (i = 0; i < count; i++) { | |
2717 | ret = snd_soc_register_dai(&dai[i]); | |
2718 | if (ret != 0) | |
2719 | goto err; | |
2720 | } | |
2721 | ||
2722 | return 0; | |
2723 | ||
2724 | err: | |
2725 | for (i--; i >= 0; i--) | |
2726 | snd_soc_unregister_dai(&dai[i]); | |
2727 | ||
2728 | return ret; | |
2729 | } | |
2730 | EXPORT_SYMBOL_GPL(snd_soc_register_dais); | |
2731 | ||
2732 | /** | |
2733 | * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core | |
2734 | * | |
ac11a2b3 MB |
2735 | * @dai: Array of DAIs to unregister |
2736 | * @count: Number of DAIs | |
9115171a MB |
2737 | */ |
2738 | void snd_soc_unregister_dais(struct snd_soc_dai *dai, size_t count) | |
2739 | { | |
2740 | int i; | |
2741 | ||
2742 | for (i = 0; i < count; i++) | |
2743 | snd_soc_unregister_dai(&dai[i]); | |
2744 | } | |
2745 | EXPORT_SYMBOL_GPL(snd_soc_unregister_dais); | |
2746 | ||
12a48a8c MB |
2747 | /** |
2748 | * snd_soc_register_platform - Register a platform with the ASoC core | |
2749 | * | |
ac11a2b3 | 2750 | * @platform: platform to register |
12a48a8c MB |
2751 | */ |
2752 | int snd_soc_register_platform(struct snd_soc_platform *platform) | |
2753 | { | |
2754 | if (!platform->name) | |
2755 | return -EINVAL; | |
2756 | ||
2757 | INIT_LIST_HEAD(&platform->list); | |
2758 | ||
2759 | mutex_lock(&client_mutex); | |
2760 | list_add(&platform->list, &platform_list); | |
435c5e25 | 2761 | snd_soc_instantiate_cards(); |
12a48a8c MB |
2762 | mutex_unlock(&client_mutex); |
2763 | ||
2764 | pr_debug("Registered platform '%s'\n", platform->name); | |
2765 | ||
2766 | return 0; | |
2767 | } | |
2768 | EXPORT_SYMBOL_GPL(snd_soc_register_platform); | |
2769 | ||
2770 | /** | |
2771 | * snd_soc_unregister_platform - Unregister a platform from the ASoC core | |
2772 | * | |
ac11a2b3 | 2773 | * @platform: platform to unregister |
12a48a8c MB |
2774 | */ |
2775 | void snd_soc_unregister_platform(struct snd_soc_platform *platform) | |
2776 | { | |
2777 | mutex_lock(&client_mutex); | |
2778 | list_del(&platform->list); | |
2779 | mutex_unlock(&client_mutex); | |
2780 | ||
2781 | pr_debug("Unregistered platform '%s'\n", platform->name); | |
2782 | } | |
2783 | EXPORT_SYMBOL_GPL(snd_soc_unregister_platform); | |
2784 | ||
151ab22c MB |
2785 | static u64 codec_format_map[] = { |
2786 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE, | |
2787 | SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE, | |
2788 | SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE, | |
2789 | SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_U24_BE, | |
2790 | SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE, | |
2791 | SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_U32_BE, | |
2792 | SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_U24_3BE, | |
2793 | SNDRV_PCM_FMTBIT_U24_3LE | SNDRV_PCM_FMTBIT_U24_3BE, | |
2794 | SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE, | |
2795 | SNDRV_PCM_FMTBIT_U20_3LE | SNDRV_PCM_FMTBIT_U20_3BE, | |
2796 | SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE, | |
2797 | SNDRV_PCM_FMTBIT_U18_3LE | SNDRV_PCM_FMTBIT_U18_3BE, | |
2798 | SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE, | |
2799 | SNDRV_PCM_FMTBIT_FLOAT64_LE | SNDRV_PCM_FMTBIT_FLOAT64_BE, | |
2800 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE | |
2801 | | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE, | |
2802 | }; | |
2803 | ||
2804 | /* Fix up the DAI formats for endianness: codecs don't actually see | |
2805 | * the endianness of the data but we're using the CPU format | |
2806 | * definitions which do need to include endianness so we ensure that | |
2807 | * codec DAIs always have both big and little endian variants set. | |
2808 | */ | |
2809 | static void fixup_codec_formats(struct snd_soc_pcm_stream *stream) | |
2810 | { | |
2811 | int i; | |
2812 | ||
2813 | for (i = 0; i < ARRAY_SIZE(codec_format_map); i++) | |
2814 | if (stream->formats & codec_format_map[i]) | |
2815 | stream->formats |= codec_format_map[i]; | |
2816 | } | |
2817 | ||
0d0cf00a MB |
2818 | /** |
2819 | * snd_soc_register_codec - Register a codec with the ASoC core | |
2820 | * | |
ac11a2b3 | 2821 | * @codec: codec to register |
0d0cf00a MB |
2822 | */ |
2823 | int snd_soc_register_codec(struct snd_soc_codec *codec) | |
2824 | { | |
151ab22c MB |
2825 | int i; |
2826 | ||
0d0cf00a MB |
2827 | if (!codec->name) |
2828 | return -EINVAL; | |
2829 | ||
2830 | /* The device should become mandatory over time */ | |
2831 | if (!codec->dev) | |
2832 | printk(KERN_WARNING "No device for codec %s\n", codec->name); | |
2833 | ||
2834 | INIT_LIST_HEAD(&codec->list); | |
2835 | ||
151ab22c MB |
2836 | for (i = 0; i < codec->num_dai; i++) { |
2837 | fixup_codec_formats(&codec->dai[i].playback); | |
2838 | fixup_codec_formats(&codec->dai[i].capture); | |
2839 | } | |
2840 | ||
0d0cf00a MB |
2841 | mutex_lock(&client_mutex); |
2842 | list_add(&codec->list, &codec_list); | |
2843 | snd_soc_instantiate_cards(); | |
2844 | mutex_unlock(&client_mutex); | |
2845 | ||
2846 | pr_debug("Registered codec '%s'\n", codec->name); | |
2847 | ||
2848 | return 0; | |
2849 | } | |
2850 | EXPORT_SYMBOL_GPL(snd_soc_register_codec); | |
2851 | ||
2852 | /** | |
2853 | * snd_soc_unregister_codec - Unregister a codec from the ASoC core | |
2854 | * | |
ac11a2b3 | 2855 | * @codec: codec to unregister |
0d0cf00a MB |
2856 | */ |
2857 | void snd_soc_unregister_codec(struct snd_soc_codec *codec) | |
2858 | { | |
2859 | mutex_lock(&client_mutex); | |
2860 | list_del(&codec->list); | |
2861 | mutex_unlock(&client_mutex); | |
2862 | ||
2863 | pr_debug("Unregistered codec '%s'\n", codec->name); | |
2864 | } | |
2865 | EXPORT_SYMBOL_GPL(snd_soc_unregister_codec); | |
2866 | ||
c9b3a40f | 2867 | static int __init snd_soc_init(void) |
db2a4165 | 2868 | { |
384c89e2 MB |
2869 | #ifdef CONFIG_DEBUG_FS |
2870 | debugfs_root = debugfs_create_dir("asoc", NULL); | |
2871 | if (IS_ERR(debugfs_root) || !debugfs_root) { | |
2872 | printk(KERN_WARNING | |
2873 | "ASoC: Failed to create debugfs directory\n"); | |
2874 | debugfs_root = NULL; | |
2875 | } | |
2876 | #endif | |
2877 | ||
db2a4165 FM |
2878 | return platform_driver_register(&soc_driver); |
2879 | } | |
2880 | ||
7d8c16a6 | 2881 | static void __exit snd_soc_exit(void) |
db2a4165 | 2882 | { |
384c89e2 MB |
2883 | #ifdef CONFIG_DEBUG_FS |
2884 | debugfs_remove_recursive(debugfs_root); | |
2885 | #endif | |
3ff3f64b | 2886 | platform_driver_unregister(&soc_driver); |
db2a4165 FM |
2887 | } |
2888 | ||
2889 | module_init(snd_soc_init); | |
2890 | module_exit(snd_soc_exit); | |
2891 | ||
2892 | /* Module information */ | |
d331124d | 2893 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
db2a4165 FM |
2894 | MODULE_DESCRIPTION("ALSA SoC Core"); |
2895 | MODULE_LICENSE("GPL"); | |
8b45a209 | 2896 | MODULE_ALIAS("platform:soc-audio"); |