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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, | |
6038f373 | 226 | .llseek = default_llseek, |
2624d5fa MB |
227 | }; |
228 | ||
229 | static void soc_init_codec_debugfs(struct snd_soc_codec *codec) | |
230 | { | |
231 | char codec_root[128]; | |
232 | ||
233 | if (codec->dev) | |
234 | snprintf(codec_root, sizeof(codec_root), | |
235 | "%s.%s", codec->name, dev_name(codec->dev)); | |
236 | else | |
237 | snprintf(codec_root, sizeof(codec_root), | |
238 | "%s", codec->name); | |
239 | ||
240 | codec->debugfs_codec_root = debugfs_create_dir(codec_root, | |
241 | debugfs_root); | |
242 | if (!codec->debugfs_codec_root) { | |
243 | printk(KERN_WARNING | |
244 | "ASoC: Failed to create codec debugfs directory\n"); | |
245 | return; | |
246 | } | |
247 | ||
248 | codec->debugfs_reg = debugfs_create_file("codec_reg", 0644, | |
249 | codec->debugfs_codec_root, | |
250 | codec, &codec_reg_fops); | |
251 | if (!codec->debugfs_reg) | |
252 | printk(KERN_WARNING | |
253 | "ASoC: Failed to create codec register debugfs file\n"); | |
254 | ||
708fafb3 | 255 | codec->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0644, |
2624d5fa MB |
256 | codec->debugfs_codec_root, |
257 | &codec->pop_time); | |
258 | if (!codec->debugfs_pop_time) | |
259 | printk(KERN_WARNING | |
260 | "Failed to create pop time debugfs file\n"); | |
261 | ||
262 | codec->debugfs_dapm = debugfs_create_dir("dapm", | |
263 | codec->debugfs_codec_root); | |
264 | if (!codec->debugfs_dapm) | |
265 | printk(KERN_WARNING | |
266 | "Failed to create DAPM debugfs directory\n"); | |
267 | ||
268 | snd_soc_dapm_debugfs_init(codec); | |
269 | } | |
270 | ||
271 | static void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec) | |
272 | { | |
273 | debugfs_remove_recursive(codec->debugfs_codec_root); | |
274 | } | |
275 | ||
276 | #else | |
277 | ||
278 | static inline void soc_init_codec_debugfs(struct snd_soc_codec *codec) | |
279 | { | |
280 | } | |
281 | ||
282 | static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec) | |
283 | { | |
284 | } | |
285 | #endif | |
286 | ||
db2a4165 FM |
287 | #ifdef CONFIG_SND_SOC_AC97_BUS |
288 | /* unregister ac97 codec */ | |
289 | static int soc_ac97_dev_unregister(struct snd_soc_codec *codec) | |
290 | { | |
291 | if (codec->ac97->dev.bus) | |
292 | device_unregister(&codec->ac97->dev); | |
293 | return 0; | |
294 | } | |
295 | ||
296 | /* stop no dev release warning */ | |
297 | static void soc_ac97_device_release(struct device *dev){} | |
298 | ||
299 | /* register ac97 codec to bus */ | |
300 | static int soc_ac97_dev_register(struct snd_soc_codec *codec) | |
301 | { | |
302 | int err; | |
303 | ||
304 | codec->ac97->dev.bus = &ac97_bus_type; | |
4ac5c61f | 305 | codec->ac97->dev.parent = codec->card->dev; |
db2a4165 FM |
306 | codec->ac97->dev.release = soc_ac97_device_release; |
307 | ||
bb072bf0 KS |
308 | dev_set_name(&codec->ac97->dev, "%d-%d:%s", |
309 | codec->card->number, 0, codec->name); | |
db2a4165 FM |
310 | err = device_register(&codec->ac97->dev); |
311 | if (err < 0) { | |
312 | snd_printk(KERN_ERR "Can't register ac97 bus\n"); | |
313 | codec->ac97->dev.bus = NULL; | |
314 | return err; | |
315 | } | |
316 | return 0; | |
317 | } | |
318 | #endif | |
319 | ||
06f409d7 MB |
320 | static int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream) |
321 | { | |
322 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
323 | struct snd_soc_device *socdev = rtd->socdev; | |
324 | struct snd_soc_card *card = socdev->card; | |
325 | struct snd_soc_dai_link *machine = rtd->dai; | |
326 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; | |
327 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
328 | int ret; | |
329 | ||
330 | if (codec_dai->symmetric_rates || cpu_dai->symmetric_rates || | |
331 | machine->symmetric_rates) { | |
50831450 | 332 | dev_dbg(card->dev, "Symmetry forces %dHz rate\n", |
06f409d7 MB |
333 | machine->rate); |
334 | ||
335 | ret = snd_pcm_hw_constraint_minmax(substream->runtime, | |
336 | SNDRV_PCM_HW_PARAM_RATE, | |
337 | machine->rate, | |
338 | machine->rate); | |
339 | if (ret < 0) { | |
340 | dev_err(card->dev, | |
341 | "Unable to apply rate symmetry constraint: %d\n", ret); | |
342 | return ret; | |
343 | } | |
344 | } | |
345 | ||
346 | return 0; | |
347 | } | |
348 | ||
db2a4165 FM |
349 | /* |
350 | * Called by ALSA when a PCM substream is opened, the runtime->hw record is | |
351 | * then initialized and any private data can be allocated. This also calls | |
352 | * startup for the cpu DAI, platform, machine and codec DAI. | |
353 | */ | |
354 | static int soc_pcm_open(struct snd_pcm_substream *substream) | |
355 | { | |
356 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
357 | struct snd_soc_device *socdev = rtd->socdev; | |
87689d56 | 358 | struct snd_soc_card *card = socdev->card; |
db2a4165 | 359 | struct snd_pcm_runtime *runtime = substream->runtime; |
cb666e5b | 360 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 | 361 | struct snd_soc_platform *platform = card->platform; |
3c4b266f LG |
362 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
363 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
364 | int ret = 0; |
365 | ||
366 | mutex_lock(&pcm_mutex); | |
367 | ||
368 | /* startup the audio subsystem */ | |
6335d055 EM |
369 | if (cpu_dai->ops->startup) { |
370 | ret = cpu_dai->ops->startup(substream, cpu_dai); | |
db2a4165 FM |
371 | if (ret < 0) { |
372 | printk(KERN_ERR "asoc: can't open interface %s\n", | |
cb666e5b | 373 | cpu_dai->name); |
db2a4165 FM |
374 | goto out; |
375 | } | |
376 | } | |
377 | ||
378 | if (platform->pcm_ops->open) { | |
379 | ret = platform->pcm_ops->open(substream); | |
380 | if (ret < 0) { | |
381 | printk(KERN_ERR "asoc: can't open platform %s\n", platform->name); | |
382 | goto platform_err; | |
383 | } | |
384 | } | |
385 | ||
6335d055 EM |
386 | if (codec_dai->ops->startup) { |
387 | ret = codec_dai->ops->startup(substream, codec_dai); | |
db2a4165 | 388 | if (ret < 0) { |
cb666e5b LG |
389 | printk(KERN_ERR "asoc: can't open codec %s\n", |
390 | codec_dai->name); | |
391 | goto codec_dai_err; | |
db2a4165 FM |
392 | } |
393 | } | |
394 | ||
cb666e5b LG |
395 | if (machine->ops && machine->ops->startup) { |
396 | ret = machine->ops->startup(substream); | |
db2a4165 | 397 | if (ret < 0) { |
cb666e5b LG |
398 | printk(KERN_ERR "asoc: %s startup failed\n", machine->name); |
399 | goto machine_err; | |
db2a4165 FM |
400 | } |
401 | } | |
402 | ||
db2a4165 FM |
403 | /* Check that the codec and cpu DAI's are compatible */ |
404 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
405 | runtime->hw.rate_min = | |
3ff3f64b MB |
406 | max(codec_dai->playback.rate_min, |
407 | cpu_dai->playback.rate_min); | |
db2a4165 | 408 | runtime->hw.rate_max = |
3ff3f64b MB |
409 | min(codec_dai->playback.rate_max, |
410 | cpu_dai->playback.rate_max); | |
db2a4165 | 411 | runtime->hw.channels_min = |
cb666e5b LG |
412 | max(codec_dai->playback.channels_min, |
413 | cpu_dai->playback.channels_min); | |
db2a4165 | 414 | runtime->hw.channels_max = |
cb666e5b LG |
415 | min(codec_dai->playback.channels_max, |
416 | cpu_dai->playback.channels_max); | |
417 | runtime->hw.formats = | |
418 | codec_dai->playback.formats & cpu_dai->playback.formats; | |
419 | runtime->hw.rates = | |
420 | codec_dai->playback.rates & cpu_dai->playback.rates; | |
d9ad6296 JB |
421 | if (codec_dai->playback.rates |
422 | & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) | |
423 | runtime->hw.rates |= cpu_dai->playback.rates; | |
424 | if (cpu_dai->playback.rates | |
425 | & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) | |
426 | runtime->hw.rates |= codec_dai->playback.rates; | |
db2a4165 FM |
427 | } else { |
428 | runtime->hw.rate_min = | |
3ff3f64b MB |
429 | max(codec_dai->capture.rate_min, |
430 | cpu_dai->capture.rate_min); | |
db2a4165 | 431 | runtime->hw.rate_max = |
3ff3f64b MB |
432 | min(codec_dai->capture.rate_max, |
433 | cpu_dai->capture.rate_max); | |
db2a4165 | 434 | runtime->hw.channels_min = |
cb666e5b LG |
435 | max(codec_dai->capture.channels_min, |
436 | cpu_dai->capture.channels_min); | |
db2a4165 | 437 | runtime->hw.channels_max = |
cb666e5b LG |
438 | min(codec_dai->capture.channels_max, |
439 | cpu_dai->capture.channels_max); | |
440 | runtime->hw.formats = | |
441 | codec_dai->capture.formats & cpu_dai->capture.formats; | |
442 | runtime->hw.rates = | |
443 | codec_dai->capture.rates & cpu_dai->capture.rates; | |
d9ad6296 JB |
444 | if (codec_dai->capture.rates |
445 | & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) | |
446 | runtime->hw.rates |= cpu_dai->capture.rates; | |
447 | if (cpu_dai->capture.rates | |
448 | & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) | |
449 | runtime->hw.rates |= codec_dai->capture.rates; | |
db2a4165 FM |
450 | } |
451 | ||
452 | snd_pcm_limit_hw_rates(runtime); | |
453 | if (!runtime->hw.rates) { | |
454 | printk(KERN_ERR "asoc: %s <-> %s No matching rates\n", | |
cb666e5b | 455 | codec_dai->name, cpu_dai->name); |
bb1c0478 | 456 | goto config_err; |
db2a4165 FM |
457 | } |
458 | if (!runtime->hw.formats) { | |
459 | printk(KERN_ERR "asoc: %s <-> %s No matching formats\n", | |
cb666e5b | 460 | codec_dai->name, cpu_dai->name); |
bb1c0478 | 461 | goto config_err; |
db2a4165 FM |
462 | } |
463 | if (!runtime->hw.channels_min || !runtime->hw.channels_max) { | |
464 | printk(KERN_ERR "asoc: %s <-> %s No matching channels\n", | |
cb666e5b | 465 | codec_dai->name, cpu_dai->name); |
bb1c0478 | 466 | goto config_err; |
db2a4165 FM |
467 | } |
468 | ||
06f409d7 MB |
469 | /* Symmetry only applies if we've already got an active stream. */ |
470 | if (cpu_dai->active || codec_dai->active) { | |
471 | ret = soc_pcm_apply_symmetry(substream); | |
472 | if (ret != 0) | |
bb1c0478 | 473 | goto config_err; |
06f409d7 MB |
474 | } |
475 | ||
f24368c2 MB |
476 | pr_debug("asoc: %s <-> %s info:\n", codec_dai->name, cpu_dai->name); |
477 | pr_debug("asoc: rate mask 0x%x\n", runtime->hw.rates); | |
478 | pr_debug("asoc: min ch %d max ch %d\n", runtime->hw.channels_min, | |
479 | runtime->hw.channels_max); | |
480 | pr_debug("asoc: min rate %d max rate %d\n", runtime->hw.rate_min, | |
481 | runtime->hw.rate_max); | |
db2a4165 | 482 | |
14dc5734 JB |
483 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
484 | cpu_dai->playback.active++; | |
485 | codec_dai->playback.active++; | |
486 | } else { | |
487 | cpu_dai->capture.active++; | |
488 | codec_dai->capture.active++; | |
489 | } | |
490 | cpu_dai->active++; | |
491 | codec_dai->active++; | |
6627a653 | 492 | card->codec->active++; |
db2a4165 FM |
493 | mutex_unlock(&pcm_mutex); |
494 | return 0; | |
495 | ||
bb1c0478 | 496 | config_err: |
db2a4165 FM |
497 | if (machine->ops && machine->ops->shutdown) |
498 | machine->ops->shutdown(substream); | |
499 | ||
bb1c0478 JB |
500 | machine_err: |
501 | if (codec_dai->ops->shutdown) | |
502 | codec_dai->ops->shutdown(substream, codec_dai); | |
503 | ||
cb666e5b | 504 | codec_dai_err: |
db2a4165 FM |
505 | if (platform->pcm_ops->close) |
506 | platform->pcm_ops->close(substream); | |
507 | ||
508 | platform_err: | |
6335d055 EM |
509 | if (cpu_dai->ops->shutdown) |
510 | cpu_dai->ops->shutdown(substream, cpu_dai); | |
db2a4165 FM |
511 | out: |
512 | mutex_unlock(&pcm_mutex); | |
513 | return ret; | |
514 | } | |
515 | ||
516 | /* | |
3a4fa0a2 | 517 | * Power down the audio subsystem pmdown_time msecs after close is called. |
db2a4165 FM |
518 | * This is to ensure there are no pops or clicks in between any music tracks |
519 | * due to DAPM power cycling. | |
520 | */ | |
4484bb2e | 521 | static void close_delayed_work(struct work_struct *work) |
db2a4165 | 522 | { |
6308419a MB |
523 | struct snd_soc_card *card = container_of(work, struct snd_soc_card, |
524 | delayed_work.work); | |
6627a653 | 525 | struct snd_soc_codec *codec = card->codec; |
3c4b266f | 526 | struct snd_soc_dai *codec_dai; |
db2a4165 FM |
527 | int i; |
528 | ||
529 | mutex_lock(&pcm_mutex); | |
3ff3f64b | 530 | for (i = 0; i < codec->num_dai; i++) { |
db2a4165 FM |
531 | codec_dai = &codec->dai[i]; |
532 | ||
f24368c2 MB |
533 | pr_debug("pop wq checking: %s status: %s waiting: %s\n", |
534 | codec_dai->playback.stream_name, | |
535 | codec_dai->playback.active ? "active" : "inactive", | |
536 | codec_dai->pop_wait ? "yes" : "no"); | |
db2a4165 FM |
537 | |
538 | /* are we waiting on this codec DAI stream */ | |
539 | if (codec_dai->pop_wait == 1) { | |
db2a4165 | 540 | codec_dai->pop_wait = 0; |
0b4d221b LG |
541 | snd_soc_dapm_stream_event(codec, |
542 | codec_dai->playback.stream_name, | |
db2a4165 | 543 | SND_SOC_DAPM_STREAM_STOP); |
db2a4165 FM |
544 | } |
545 | } | |
546 | mutex_unlock(&pcm_mutex); | |
547 | } | |
548 | ||
549 | /* | |
550 | * Called by ALSA when a PCM substream is closed. Private data can be | |
551 | * freed here. The cpu DAI, codec DAI, machine and platform are also | |
552 | * shutdown. | |
553 | */ | |
554 | static int soc_codec_close(struct snd_pcm_substream *substream) | |
555 | { | |
556 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
557 | struct snd_soc_device *socdev = rtd->socdev; | |
6308419a | 558 | struct snd_soc_card *card = socdev->card; |
cb666e5b | 559 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 | 560 | struct snd_soc_platform *platform = card->platform; |
3c4b266f LG |
561 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
562 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
6627a653 | 563 | struct snd_soc_codec *codec = card->codec; |
db2a4165 FM |
564 | |
565 | mutex_lock(&pcm_mutex); | |
566 | ||
14dc5734 JB |
567 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
568 | cpu_dai->playback.active--; | |
569 | codec_dai->playback.active--; | |
570 | } else { | |
571 | cpu_dai->capture.active--; | |
572 | codec_dai->capture.active--; | |
db2a4165 | 573 | } |
14dc5734 JB |
574 | |
575 | cpu_dai->active--; | |
576 | codec_dai->active--; | |
db2a4165 FM |
577 | codec->active--; |
578 | ||
6010b2da MB |
579 | /* Muting the DAC suppresses artifacts caused during digital |
580 | * shutdown, for example from stopping clocks. | |
581 | */ | |
582 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
583 | snd_soc_dai_digital_mute(codec_dai, 1); | |
584 | ||
6335d055 EM |
585 | if (cpu_dai->ops->shutdown) |
586 | cpu_dai->ops->shutdown(substream, cpu_dai); | |
db2a4165 | 587 | |
6335d055 EM |
588 | if (codec_dai->ops->shutdown) |
589 | codec_dai->ops->shutdown(substream, codec_dai); | |
db2a4165 FM |
590 | |
591 | if (machine->ops && machine->ops->shutdown) | |
592 | machine->ops->shutdown(substream); | |
593 | ||
594 | if (platform->pcm_ops->close) | |
595 | platform->pcm_ops->close(substream); | |
db2a4165 FM |
596 | |
597 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
598 | /* start delayed pop wq here for playback streams */ | |
cb666e5b | 599 | codec_dai->pop_wait = 1; |
6308419a | 600 | schedule_delayed_work(&card->delayed_work, |
96dd3622 | 601 | msecs_to_jiffies(card->pmdown_time)); |
db2a4165 FM |
602 | } else { |
603 | /* capture streams can be powered down now */ | |
cb666e5b | 604 | snd_soc_dapm_stream_event(codec, |
0b4d221b LG |
605 | codec_dai->capture.stream_name, |
606 | SND_SOC_DAPM_STREAM_STOP); | |
db2a4165 FM |
607 | } |
608 | ||
609 | mutex_unlock(&pcm_mutex); | |
610 | return 0; | |
611 | } | |
612 | ||
613 | /* | |
614 | * Called by ALSA when the PCM substream is prepared, can set format, sample | |
615 | * rate, etc. This function is non atomic and can be called multiple times, | |
616 | * it can refer to the runtime info. | |
617 | */ | |
618 | static int soc_pcm_prepare(struct snd_pcm_substream *substream) | |
619 | { | |
620 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
621 | struct snd_soc_device *socdev = rtd->socdev; | |
6308419a | 622 | struct snd_soc_card *card = socdev->card; |
cb666e5b | 623 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 | 624 | struct snd_soc_platform *platform = card->platform; |
3c4b266f LG |
625 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
626 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
6627a653 | 627 | struct snd_soc_codec *codec = card->codec; |
db2a4165 FM |
628 | int ret = 0; |
629 | ||
630 | mutex_lock(&pcm_mutex); | |
cb666e5b LG |
631 | |
632 | if (machine->ops && machine->ops->prepare) { | |
633 | ret = machine->ops->prepare(substream); | |
634 | if (ret < 0) { | |
635 | printk(KERN_ERR "asoc: machine prepare error\n"); | |
636 | goto out; | |
637 | } | |
638 | } | |
639 | ||
db2a4165 FM |
640 | if (platform->pcm_ops->prepare) { |
641 | ret = platform->pcm_ops->prepare(substream); | |
a71a468a LG |
642 | if (ret < 0) { |
643 | printk(KERN_ERR "asoc: platform prepare error\n"); | |
db2a4165 | 644 | goto out; |
a71a468a | 645 | } |
db2a4165 FM |
646 | } |
647 | ||
6335d055 EM |
648 | if (codec_dai->ops->prepare) { |
649 | ret = codec_dai->ops->prepare(substream, codec_dai); | |
a71a468a LG |
650 | if (ret < 0) { |
651 | printk(KERN_ERR "asoc: codec DAI prepare error\n"); | |
db2a4165 | 652 | goto out; |
a71a468a | 653 | } |
db2a4165 FM |
654 | } |
655 | ||
6335d055 EM |
656 | if (cpu_dai->ops->prepare) { |
657 | ret = cpu_dai->ops->prepare(substream, cpu_dai); | |
cb666e5b LG |
658 | if (ret < 0) { |
659 | printk(KERN_ERR "asoc: cpu DAI prepare error\n"); | |
660 | goto out; | |
661 | } | |
662 | } | |
db2a4165 | 663 | |
d45f6219 MB |
664 | /* cancel any delayed stream shutdown that is pending */ |
665 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
666 | codec_dai->pop_wait) { | |
667 | codec_dai->pop_wait = 0; | |
6308419a | 668 | cancel_delayed_work(&card->delayed_work); |
d45f6219 | 669 | } |
db2a4165 | 670 | |
452c5eaa MB |
671 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
672 | snd_soc_dapm_stream_event(codec, | |
673 | codec_dai->playback.stream_name, | |
674 | SND_SOC_DAPM_STREAM_START); | |
675 | else | |
676 | snd_soc_dapm_stream_event(codec, | |
677 | codec_dai->capture.stream_name, | |
678 | SND_SOC_DAPM_STREAM_START); | |
8c6529db | 679 | |
452c5eaa | 680 | snd_soc_dai_digital_mute(codec_dai, 0); |
db2a4165 FM |
681 | |
682 | out: | |
683 | mutex_unlock(&pcm_mutex); | |
684 | return ret; | |
685 | } | |
686 | ||
687 | /* | |
688 | * Called by ALSA when the hardware params are set by application. This | |
689 | * function can also be called multiple times and can allocate buffers | |
690 | * (using snd_pcm_lib_* ). It's non-atomic. | |
691 | */ | |
692 | static int soc_pcm_hw_params(struct snd_pcm_substream *substream, | |
693 | struct snd_pcm_hw_params *params) | |
694 | { | |
695 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
696 | struct snd_soc_device *socdev = rtd->socdev; | |
cb666e5b | 697 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 MB |
698 | struct snd_soc_card *card = socdev->card; |
699 | struct snd_soc_platform *platform = card->platform; | |
3c4b266f LG |
700 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
701 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
702 | int ret = 0; |
703 | ||
704 | mutex_lock(&pcm_mutex); | |
705 | ||
cb666e5b LG |
706 | if (machine->ops && machine->ops->hw_params) { |
707 | ret = machine->ops->hw_params(substream, params); | |
708 | if (ret < 0) { | |
709 | printk(KERN_ERR "asoc: machine hw_params failed\n"); | |
db2a4165 | 710 | goto out; |
cb666e5b | 711 | } |
db2a4165 FM |
712 | } |
713 | ||
6335d055 EM |
714 | if (codec_dai->ops->hw_params) { |
715 | ret = codec_dai->ops->hw_params(substream, params, codec_dai); | |
db2a4165 FM |
716 | if (ret < 0) { |
717 | printk(KERN_ERR "asoc: can't set codec %s hw params\n", | |
cb666e5b LG |
718 | codec_dai->name); |
719 | goto codec_err; | |
db2a4165 FM |
720 | } |
721 | } | |
722 | ||
6335d055 EM |
723 | if (cpu_dai->ops->hw_params) { |
724 | ret = cpu_dai->ops->hw_params(substream, params, cpu_dai); | |
db2a4165 | 725 | if (ret < 0) { |
3ff3f64b | 726 | printk(KERN_ERR "asoc: interface %s hw params failed\n", |
cb666e5b | 727 | cpu_dai->name); |
db2a4165 FM |
728 | goto interface_err; |
729 | } | |
730 | } | |
731 | ||
732 | if (platform->pcm_ops->hw_params) { | |
733 | ret = platform->pcm_ops->hw_params(substream, params); | |
734 | if (ret < 0) { | |
3ff3f64b | 735 | printk(KERN_ERR "asoc: platform %s hw params failed\n", |
db2a4165 FM |
736 | platform->name); |
737 | goto platform_err; | |
738 | } | |
739 | } | |
740 | ||
06f409d7 MB |
741 | machine->rate = params_rate(params); |
742 | ||
db2a4165 FM |
743 | out: |
744 | mutex_unlock(&pcm_mutex); | |
745 | return ret; | |
746 | ||
db2a4165 | 747 | platform_err: |
6335d055 EM |
748 | if (cpu_dai->ops->hw_free) |
749 | cpu_dai->ops->hw_free(substream, cpu_dai); | |
db2a4165 FM |
750 | |
751 | interface_err: | |
6335d055 EM |
752 | if (codec_dai->ops->hw_free) |
753 | codec_dai->ops->hw_free(substream, codec_dai); | |
cb666e5b LG |
754 | |
755 | codec_err: | |
3ff3f64b | 756 | if (machine->ops && machine->ops->hw_free) |
cb666e5b | 757 | machine->ops->hw_free(substream); |
db2a4165 FM |
758 | |
759 | mutex_unlock(&pcm_mutex); | |
760 | return ret; | |
761 | } | |
762 | ||
763 | /* | |
764 | * Free's resources allocated by hw_params, can be called multiple times | |
765 | */ | |
766 | static int soc_pcm_hw_free(struct snd_pcm_substream *substream) | |
767 | { | |
768 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
769 | struct snd_soc_device *socdev = rtd->socdev; | |
cb666e5b | 770 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 MB |
771 | struct snd_soc_card *card = socdev->card; |
772 | struct snd_soc_platform *platform = card->platform; | |
3c4b266f LG |
773 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
774 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
6627a653 | 775 | struct snd_soc_codec *codec = card->codec; |
db2a4165 FM |
776 | |
777 | mutex_lock(&pcm_mutex); | |
778 | ||
779 | /* apply codec digital mute */ | |
8c6529db LG |
780 | if (!codec->active) |
781 | snd_soc_dai_digital_mute(codec_dai, 1); | |
db2a4165 FM |
782 | |
783 | /* free any machine hw params */ | |
784 | if (machine->ops && machine->ops->hw_free) | |
785 | machine->ops->hw_free(substream); | |
786 | ||
787 | /* free any DMA resources */ | |
788 | if (platform->pcm_ops->hw_free) | |
789 | platform->pcm_ops->hw_free(substream); | |
790 | ||
791 | /* now free hw params for the DAI's */ | |
6335d055 EM |
792 | if (codec_dai->ops->hw_free) |
793 | codec_dai->ops->hw_free(substream, codec_dai); | |
db2a4165 | 794 | |
6335d055 EM |
795 | if (cpu_dai->ops->hw_free) |
796 | cpu_dai->ops->hw_free(substream, cpu_dai); | |
db2a4165 FM |
797 | |
798 | mutex_unlock(&pcm_mutex); | |
799 | return 0; | |
800 | } | |
801 | ||
802 | static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd) | |
803 | { | |
804 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
805 | struct snd_soc_device *socdev = rtd->socdev; | |
87689d56 | 806 | struct snd_soc_card *card= socdev->card; |
cb666e5b | 807 | struct snd_soc_dai_link *machine = rtd->dai; |
87689d56 | 808 | struct snd_soc_platform *platform = card->platform; |
3c4b266f LG |
809 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; |
810 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
db2a4165 FM |
811 | int ret; |
812 | ||
6335d055 EM |
813 | if (codec_dai->ops->trigger) { |
814 | ret = codec_dai->ops->trigger(substream, cmd, codec_dai); | |
db2a4165 FM |
815 | if (ret < 0) |
816 | return ret; | |
817 | } | |
818 | ||
819 | if (platform->pcm_ops->trigger) { | |
820 | ret = platform->pcm_ops->trigger(substream, cmd); | |
821 | if (ret < 0) | |
822 | return ret; | |
823 | } | |
824 | ||
6335d055 EM |
825 | if (cpu_dai->ops->trigger) { |
826 | ret = cpu_dai->ops->trigger(substream, cmd, cpu_dai); | |
db2a4165 FM |
827 | if (ret < 0) |
828 | return ret; | |
829 | } | |
830 | return 0; | |
831 | } | |
832 | ||
377b6f62 PU |
833 | /* |
834 | * soc level wrapper for pointer callback | |
258020d0 PU |
835 | * If cpu_dai, codec_dai, platform driver has the delay callback, than |
836 | * the runtime->delay will be updated accordingly. | |
377b6f62 PU |
837 | */ |
838 | static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream) | |
839 | { | |
840 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
841 | struct snd_soc_device *socdev = rtd->socdev; | |
842 | struct snd_soc_card *card = socdev->card; | |
843 | struct snd_soc_platform *platform = card->platform; | |
258020d0 PU |
844 | struct snd_soc_dai_link *machine = rtd->dai; |
845 | struct snd_soc_dai *cpu_dai = machine->cpu_dai; | |
846 | struct snd_soc_dai *codec_dai = machine->codec_dai; | |
847 | struct snd_pcm_runtime *runtime = substream->runtime; | |
377b6f62 | 848 | snd_pcm_uframes_t offset = 0; |
258020d0 | 849 | snd_pcm_sframes_t delay = 0; |
377b6f62 PU |
850 | |
851 | if (platform->pcm_ops->pointer) | |
852 | offset = platform->pcm_ops->pointer(substream); | |
853 | ||
258020d0 PU |
854 | if (cpu_dai->ops->delay) |
855 | delay += cpu_dai->ops->delay(substream, cpu_dai); | |
856 | ||
857 | if (codec_dai->ops->delay) | |
858 | delay += codec_dai->ops->delay(substream, codec_dai); | |
859 | ||
860 | if (platform->delay) | |
861 | delay += platform->delay(substream, codec_dai); | |
862 | ||
863 | runtime->delay = delay; | |
864 | ||
377b6f62 PU |
865 | return offset; |
866 | } | |
867 | ||
db2a4165 FM |
868 | /* ASoC PCM operations */ |
869 | static struct snd_pcm_ops soc_pcm_ops = { | |
870 | .open = soc_pcm_open, | |
871 | .close = soc_codec_close, | |
872 | .hw_params = soc_pcm_hw_params, | |
873 | .hw_free = soc_pcm_hw_free, | |
874 | .prepare = soc_pcm_prepare, | |
875 | .trigger = soc_pcm_trigger, | |
377b6f62 | 876 | .pointer = soc_pcm_pointer, |
db2a4165 FM |
877 | }; |
878 | ||
879 | #ifdef CONFIG_PM | |
880 | /* powers down audio subsystem for suspend */ | |
416356fc | 881 | static int soc_suspend(struct device *dev) |
db2a4165 | 882 | { |
416356fc | 883 | struct platform_device *pdev = to_platform_device(dev); |
3ff3f64b | 884 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
87506549 | 885 | struct snd_soc_card *card = socdev->card; |
87689d56 | 886 | struct snd_soc_platform *platform = card->platform; |
3ff3f64b | 887 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; |
6627a653 | 888 | struct snd_soc_codec *codec = card->codec; |
db2a4165 FM |
889 | int i; |
890 | ||
e3509ff0 DM |
891 | /* If the initialization of this soc device failed, there is no codec |
892 | * associated with it. Just bail out in this case. | |
893 | */ | |
894 | if (!codec) | |
895 | return 0; | |
896 | ||
6ed25978 AG |
897 | /* Due to the resume being scheduled into a workqueue we could |
898 | * suspend before that's finished - wait for it to complete. | |
899 | */ | |
900 | snd_power_lock(codec->card); | |
901 | snd_power_wait(codec->card, SNDRV_CTL_POWER_D0); | |
902 | snd_power_unlock(codec->card); | |
903 | ||
904 | /* we're going to block userspace touching us until resume completes */ | |
905 | snd_power_change_state(codec->card, SNDRV_CTL_POWER_D3hot); | |
906 | ||
db2a4165 | 907 | /* mute any active DAC's */ |
dee89c4d MB |
908 | for (i = 0; i < card->num_links; i++) { |
909 | struct snd_soc_dai *dai = card->dai_link[i].codec_dai; | |
3efab7dc MB |
910 | |
911 | if (card->dai_link[i].ignore_suspend) | |
912 | continue; | |
913 | ||
6335d055 EM |
914 | if (dai->ops->digital_mute && dai->playback.active) |
915 | dai->ops->digital_mute(dai, 1); | |
db2a4165 FM |
916 | } |
917 | ||
4ccab3e7 | 918 | /* suspend all pcms */ |
3efab7dc MB |
919 | for (i = 0; i < card->num_links; i++) { |
920 | if (card->dai_link[i].ignore_suspend) | |
921 | continue; | |
922 | ||
87506549 | 923 | snd_pcm_suspend_all(card->dai_link[i].pcm); |
3efab7dc | 924 | } |
4ccab3e7 | 925 | |
87506549 | 926 | if (card->suspend_pre) |
416356fc | 927 | card->suspend_pre(pdev, PMSG_SUSPEND); |
db2a4165 | 928 | |
87506549 MB |
929 | for (i = 0; i < card->num_links; i++) { |
930 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
3efab7dc MB |
931 | |
932 | if (card->dai_link[i].ignore_suspend) | |
933 | continue; | |
934 | ||
3ba9e10a | 935 | if (cpu_dai->suspend && !cpu_dai->ac97_control) |
dc7d7b83 | 936 | cpu_dai->suspend(cpu_dai); |
db2a4165 | 937 | if (platform->suspend) |
d273ebe7 | 938 | platform->suspend(&card->dai_link[i]); |
db2a4165 FM |
939 | } |
940 | ||
941 | /* close any waiting streams and save state */ | |
6308419a | 942 | run_delayed_work(&card->delayed_work); |
0be9898a | 943 | codec->suspend_bias_level = codec->bias_level; |
db2a4165 | 944 | |
3ff3f64b | 945 | for (i = 0; i < codec->num_dai; i++) { |
db2a4165 | 946 | char *stream = codec->dai[i].playback.stream_name; |
3efab7dc MB |
947 | |
948 | if (card->dai_link[i].ignore_suspend) | |
949 | continue; | |
950 | ||
db2a4165 FM |
951 | if (stream != NULL) |
952 | snd_soc_dapm_stream_event(codec, stream, | |
953 | SND_SOC_DAPM_STREAM_SUSPEND); | |
954 | stream = codec->dai[i].capture.stream_name; | |
955 | if (stream != NULL) | |
956 | snd_soc_dapm_stream_event(codec, stream, | |
957 | SND_SOC_DAPM_STREAM_SUSPEND); | |
958 | } | |
959 | ||
1547aba9 MB |
960 | /* If there are paths active then the CODEC will be held with |
961 | * bias _ON and should not be suspended. */ | |
962 | if (codec_dev->suspend) { | |
963 | switch (codec->bias_level) { | |
964 | case SND_SOC_BIAS_STANDBY: | |
965 | case SND_SOC_BIAS_OFF: | |
966 | codec_dev->suspend(pdev, PMSG_SUSPEND); | |
967 | break; | |
968 | default: | |
969 | dev_dbg(socdev->dev, "CODEC is on over suspend\n"); | |
970 | break; | |
971 | } | |
972 | } | |
db2a4165 | 973 | |
87506549 MB |
974 | for (i = 0; i < card->num_links; i++) { |
975 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
3efab7dc MB |
976 | |
977 | if (card->dai_link[i].ignore_suspend) | |
978 | continue; | |
979 | ||
3ba9e10a | 980 | if (cpu_dai->suspend && cpu_dai->ac97_control) |
dc7d7b83 | 981 | cpu_dai->suspend(cpu_dai); |
db2a4165 FM |
982 | } |
983 | ||
87506549 | 984 | if (card->suspend_post) |
416356fc | 985 | card->suspend_post(pdev, PMSG_SUSPEND); |
db2a4165 FM |
986 | |
987 | return 0; | |
988 | } | |
989 | ||
6ed25978 AG |
990 | /* deferred resume work, so resume can complete before we finished |
991 | * setting our codec back up, which can be very slow on I2C | |
992 | */ | |
993 | static void soc_resume_deferred(struct work_struct *work) | |
db2a4165 | 994 | { |
6308419a MB |
995 | struct snd_soc_card *card = container_of(work, |
996 | struct snd_soc_card, | |
997 | deferred_resume_work); | |
998 | struct snd_soc_device *socdev = card->socdev; | |
87689d56 | 999 | struct snd_soc_platform *platform = card->platform; |
3ff3f64b | 1000 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; |
6627a653 | 1001 | struct snd_soc_codec *codec = card->codec; |
6ed25978 | 1002 | struct platform_device *pdev = to_platform_device(socdev->dev); |
db2a4165 FM |
1003 | int i; |
1004 | ||
6ed25978 AG |
1005 | /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time, |
1006 | * so userspace apps are blocked from touching us | |
1007 | */ | |
1008 | ||
fde22f27 | 1009 | dev_dbg(socdev->dev, "starting resume work\n"); |
6ed25978 | 1010 | |
9949788b MB |
1011 | /* Bring us up into D2 so that DAPM starts enabling things */ |
1012 | snd_power_change_state(codec->card, SNDRV_CTL_POWER_D2); | |
1013 | ||
87506549 MB |
1014 | if (card->resume_pre) |
1015 | card->resume_pre(pdev); | |
db2a4165 | 1016 | |
87506549 MB |
1017 | for (i = 0; i < card->num_links; i++) { |
1018 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
3efab7dc MB |
1019 | |
1020 | if (card->dai_link[i].ignore_suspend) | |
1021 | continue; | |
1022 | ||
3ba9e10a | 1023 | if (cpu_dai->resume && cpu_dai->ac97_control) |
dc7d7b83 | 1024 | cpu_dai->resume(cpu_dai); |
db2a4165 FM |
1025 | } |
1026 | ||
1547aba9 MB |
1027 | /* If the CODEC was idle over suspend then it will have been |
1028 | * left with bias OFF or STANDBY and suspended so we must now | |
1029 | * resume. Otherwise the suspend was suppressed. | |
1030 | */ | |
1031 | if (codec_dev->resume) { | |
1032 | switch (codec->bias_level) { | |
1033 | case SND_SOC_BIAS_STANDBY: | |
1034 | case SND_SOC_BIAS_OFF: | |
1035 | codec_dev->resume(pdev); | |
1036 | break; | |
1037 | default: | |
1038 | dev_dbg(socdev->dev, "CODEC was on over suspend\n"); | |
1039 | break; | |
1040 | } | |
1041 | } | |
db2a4165 | 1042 | |
3ff3f64b MB |
1043 | for (i = 0; i < codec->num_dai; i++) { |
1044 | char *stream = codec->dai[i].playback.stream_name; | |
3efab7dc MB |
1045 | |
1046 | if (card->dai_link[i].ignore_suspend) | |
1047 | continue; | |
1048 | ||
db2a4165 FM |
1049 | if (stream != NULL) |
1050 | snd_soc_dapm_stream_event(codec, stream, | |
1051 | SND_SOC_DAPM_STREAM_RESUME); | |
1052 | stream = codec->dai[i].capture.stream_name; | |
1053 | if (stream != NULL) | |
1054 | snd_soc_dapm_stream_event(codec, stream, | |
1055 | SND_SOC_DAPM_STREAM_RESUME); | |
1056 | } | |
1057 | ||
3ff3f64b | 1058 | /* unmute any active DACs */ |
dee89c4d MB |
1059 | for (i = 0; i < card->num_links; i++) { |
1060 | struct snd_soc_dai *dai = card->dai_link[i].codec_dai; | |
3efab7dc MB |
1061 | |
1062 | if (card->dai_link[i].ignore_suspend) | |
1063 | continue; | |
1064 | ||
6335d055 EM |
1065 | if (dai->ops->digital_mute && dai->playback.active) |
1066 | dai->ops->digital_mute(dai, 0); | |
db2a4165 FM |
1067 | } |
1068 | ||
87506549 MB |
1069 | for (i = 0; i < card->num_links; i++) { |
1070 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
3efab7dc MB |
1071 | |
1072 | if (card->dai_link[i].ignore_suspend) | |
1073 | continue; | |
1074 | ||
3ba9e10a | 1075 | if (cpu_dai->resume && !cpu_dai->ac97_control) |
dc7d7b83 | 1076 | cpu_dai->resume(cpu_dai); |
db2a4165 | 1077 | if (platform->resume) |
d273ebe7 | 1078 | platform->resume(&card->dai_link[i]); |
db2a4165 FM |
1079 | } |
1080 | ||
87506549 MB |
1081 | if (card->resume_post) |
1082 | card->resume_post(pdev); | |
db2a4165 | 1083 | |
fde22f27 | 1084 | dev_dbg(socdev->dev, "resume work completed\n"); |
6ed25978 AG |
1085 | |
1086 | /* userspace can access us now we are back as we were before */ | |
1087 | snd_power_change_state(codec->card, SNDRV_CTL_POWER_D0); | |
1088 | } | |
1089 | ||
1090 | /* powers up audio subsystem after a suspend */ | |
416356fc | 1091 | static int soc_resume(struct device *dev) |
6ed25978 | 1092 | { |
416356fc | 1093 | struct platform_device *pdev = to_platform_device(dev); |
6ed25978 | 1094 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
6308419a | 1095 | struct snd_soc_card *card = socdev->card; |
64ab9baa | 1096 | struct snd_soc_dai *cpu_dai = card->dai_link[0].cpu_dai; |
6ed25978 | 1097 | |
b9dd94a8 PU |
1098 | /* If the initialization of this soc device failed, there is no codec |
1099 | * associated with it. Just bail out in this case. | |
1100 | */ | |
1101 | if (!card->codec) | |
1102 | return 0; | |
1103 | ||
64ab9baa MB |
1104 | /* AC97 devices might have other drivers hanging off them so |
1105 | * need to resume immediately. Other drivers don't have that | |
1106 | * problem and may take a substantial amount of time to resume | |
1107 | * due to I/O costs and anti-pop so handle them out of line. | |
1108 | */ | |
1109 | if (cpu_dai->ac97_control) { | |
1110 | dev_dbg(socdev->dev, "Resuming AC97 immediately\n"); | |
1111 | soc_resume_deferred(&card->deferred_resume_work); | |
1112 | } else { | |
1113 | dev_dbg(socdev->dev, "Scheduling resume work\n"); | |
1114 | if (!schedule_work(&card->deferred_resume_work)) | |
1115 | dev_err(socdev->dev, "resume work item may be lost\n"); | |
1116 | } | |
6ed25978 | 1117 | |
db2a4165 FM |
1118 | return 0; |
1119 | } | |
db2a4165 FM |
1120 | #else |
1121 | #define soc_suspend NULL | |
1122 | #define soc_resume NULL | |
1123 | #endif | |
1124 | ||
02a06d30 BS |
1125 | static struct snd_soc_dai_ops null_dai_ops = { |
1126 | }; | |
1127 | ||
435c5e25 | 1128 | static void snd_soc_instantiate_card(struct snd_soc_card *card) |
db2a4165 | 1129 | { |
435c5e25 MB |
1130 | struct platform_device *pdev = container_of(card->dev, |
1131 | struct platform_device, | |
1132 | dev); | |
1133 | struct snd_soc_codec_device *codec_dev = card->socdev->codec_dev; | |
fe3e78e0 | 1134 | struct snd_soc_codec *codec; |
435c5e25 MB |
1135 | struct snd_soc_platform *platform; |
1136 | struct snd_soc_dai *dai; | |
6b05eda6 | 1137 | int i, found, ret, ac97; |
435c5e25 MB |
1138 | |
1139 | if (card->instantiated) | |
1140 | return; | |
1141 | ||
1142 | found = 0; | |
1143 | list_for_each_entry(platform, &platform_list, list) | |
1144 | if (card->platform == platform) { | |
1145 | found = 1; | |
1146 | break; | |
1147 | } | |
1148 | if (!found) { | |
1149 | dev_dbg(card->dev, "Platform %s not registered\n", | |
1150 | card->platform->name); | |
1151 | return; | |
1152 | } | |
6308419a | 1153 | |
6b05eda6 | 1154 | ac97 = 0; |
435c5e25 MB |
1155 | for (i = 0; i < card->num_links; i++) { |
1156 | found = 0; | |
1157 | list_for_each_entry(dai, &dai_list, list) | |
1158 | if (card->dai_link[i].cpu_dai == dai) { | |
1159 | found = 1; | |
1160 | break; | |
1161 | } | |
1162 | if (!found) { | |
1163 | dev_dbg(card->dev, "DAI %s not registered\n", | |
1164 | card->dai_link[i].cpu_dai->name); | |
1165 | return; | |
1166 | } | |
6b05eda6 MB |
1167 | |
1168 | if (card->dai_link[i].cpu_dai->ac97_control) | |
1169 | ac97 = 1; | |
c5af3a2e MB |
1170 | } |
1171 | ||
02a06d30 BS |
1172 | for (i = 0; i < card->num_links; i++) { |
1173 | if (!card->dai_link[i].codec_dai->ops) | |
1174 | card->dai_link[i].codec_dai->ops = &null_dai_ops; | |
1175 | } | |
1176 | ||
6b05eda6 MB |
1177 | /* If we have AC97 in the system then don't wait for the |
1178 | * codec. This will need revisiting if we have to handle | |
1179 | * systems with mixed AC97 and non-AC97 parts. Only check for | |
1180 | * DAIs currently; we can't do this per link since some AC97 | |
1181 | * codecs have non-AC97 DAIs. | |
1182 | */ | |
1183 | if (!ac97) | |
1184 | for (i = 0; i < card->num_links; i++) { | |
1185 | found = 0; | |
1186 | list_for_each_entry(dai, &dai_list, list) | |
1187 | if (card->dai_link[i].codec_dai == dai) { | |
1188 | found = 1; | |
1189 | break; | |
1190 | } | |
1191 | if (!found) { | |
1192 | dev_dbg(card->dev, "DAI %s not registered\n", | |
1193 | card->dai_link[i].codec_dai->name); | |
1194 | return; | |
1195 | } | |
1196 | } | |
1197 | ||
435c5e25 MB |
1198 | /* Note that we do not current check for codec components */ |
1199 | ||
1200 | dev_dbg(card->dev, "All components present, instantiating\n"); | |
1201 | ||
1202 | /* Found everything, bring it up */ | |
96dd3622 MB |
1203 | card->pmdown_time = pmdown_time; |
1204 | ||
87506549 MB |
1205 | if (card->probe) { |
1206 | ret = card->probe(pdev); | |
3ff3f64b | 1207 | if (ret < 0) |
435c5e25 | 1208 | return; |
db2a4165 FM |
1209 | } |
1210 | ||
87506549 MB |
1211 | for (i = 0; i < card->num_links; i++) { |
1212 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
db2a4165 | 1213 | if (cpu_dai->probe) { |
bdb92876 | 1214 | ret = cpu_dai->probe(pdev, cpu_dai); |
3ff3f64b | 1215 | if (ret < 0) |
db2a4165 FM |
1216 | goto cpu_dai_err; |
1217 | } | |
1218 | } | |
1219 | ||
1220 | if (codec_dev->probe) { | |
1221 | ret = codec_dev->probe(pdev); | |
3ff3f64b | 1222 | if (ret < 0) |
db2a4165 FM |
1223 | goto cpu_dai_err; |
1224 | } | |
fe3e78e0 | 1225 | codec = card->codec; |
db2a4165 FM |
1226 | |
1227 | if (platform->probe) { | |
1228 | ret = platform->probe(pdev); | |
3ff3f64b | 1229 | if (ret < 0) |
db2a4165 FM |
1230 | goto platform_err; |
1231 | } | |
1232 | ||
1233 | /* DAPM stream work */ | |
6308419a | 1234 | INIT_DELAYED_WORK(&card->delayed_work, close_delayed_work); |
1301a964 | 1235 | #ifdef CONFIG_PM |
6ed25978 | 1236 | /* deferred resume work */ |
6308419a | 1237 | INIT_WORK(&card->deferred_resume_work, soc_resume_deferred); |
1301a964 | 1238 | #endif |
6ed25978 | 1239 | |
fe3e78e0 MB |
1240 | for (i = 0; i < card->num_links; i++) { |
1241 | if (card->dai_link[i].init) { | |
1242 | ret = card->dai_link[i].init(codec); | |
1243 | if (ret < 0) { | |
1244 | printk(KERN_ERR "asoc: failed to init %s\n", | |
1245 | card->dai_link[i].stream_name); | |
1246 | continue; | |
1247 | } | |
1248 | } | |
f7732053 | 1249 | if (card->dai_link[i].codec_dai->ac97_control) |
fe3e78e0 | 1250 | ac97 = 1; |
fe3e78e0 MB |
1251 | } |
1252 | ||
1253 | snprintf(codec->card->shortname, sizeof(codec->card->shortname), | |
1254 | "%s", card->name); | |
1255 | snprintf(codec->card->longname, sizeof(codec->card->longname), | |
1256 | "%s (%s)", card->name, codec->name); | |
1257 | ||
1258 | /* Make sure all DAPM widgets are instantiated */ | |
1259 | snd_soc_dapm_new_widgets(codec); | |
1260 | ||
1261 | ret = snd_card_register(codec->card); | |
1262 | if (ret < 0) { | |
1263 | printk(KERN_ERR "asoc: failed to register soundcard for %s\n", | |
1264 | codec->name); | |
1265 | goto card_err; | |
1266 | } | |
1267 | ||
1268 | mutex_lock(&codec->mutex); | |
1269 | #ifdef CONFIG_SND_SOC_AC97_BUS | |
1270 | /* Only instantiate AC97 if not already done by the adaptor | |
1271 | * for the generic AC97 subsystem. | |
1272 | */ | |
1273 | if (ac97 && strcmp(codec->name, "AC97") != 0) { | |
1274 | ret = soc_ac97_dev_register(codec); | |
1275 | if (ret < 0) { | |
1276 | printk(KERN_ERR "asoc: AC97 device register failed\n"); | |
1277 | snd_card_free(codec->card); | |
1278 | mutex_unlock(&codec->mutex); | |
1279 | goto card_err; | |
1280 | } | |
1281 | } | |
1282 | #endif | |
1283 | ||
1284 | ret = snd_soc_dapm_sys_add(card->socdev->dev); | |
1285 | if (ret < 0) | |
1286 | printk(KERN_WARNING "asoc: failed to add dapm sysfs entries\n"); | |
1287 | ||
dbe21408 MB |
1288 | ret = device_create_file(card->socdev->dev, &dev_attr_pmdown_time); |
1289 | if (ret < 0) | |
1290 | printk(KERN_WARNING "asoc: failed to add pmdown_time sysfs\n"); | |
1291 | ||
fe3e78e0 MB |
1292 | ret = device_create_file(card->socdev->dev, &dev_attr_codec_reg); |
1293 | if (ret < 0) | |
1294 | printk(KERN_WARNING "asoc: failed to add codec sysfs files\n"); | |
1295 | ||
1296 | soc_init_codec_debugfs(codec); | |
1297 | mutex_unlock(&codec->mutex); | |
1298 | ||
435c5e25 MB |
1299 | card->instantiated = 1; |
1300 | ||
1301 | return; | |
db2a4165 | 1302 | |
fe3e78e0 MB |
1303 | card_err: |
1304 | if (platform->remove) | |
1305 | platform->remove(pdev); | |
1306 | ||
db2a4165 FM |
1307 | platform_err: |
1308 | if (codec_dev->remove) | |
1309 | codec_dev->remove(pdev); | |
1310 | ||
1311 | cpu_dai_err: | |
18b9b3d9 | 1312 | for (i--; i >= 0; i--) { |
87506549 | 1313 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; |
db2a4165 | 1314 | if (cpu_dai->remove) |
bdb92876 | 1315 | cpu_dai->remove(pdev, cpu_dai); |
db2a4165 FM |
1316 | } |
1317 | ||
87506549 MB |
1318 | if (card->remove) |
1319 | card->remove(pdev); | |
435c5e25 | 1320 | } |
db2a4165 | 1321 | |
435c5e25 | 1322 | /* |
421f91d2 | 1323 | * Attempt to initialise any uninitialised cards. Must be called with |
435c5e25 MB |
1324 | * client_mutex. |
1325 | */ | |
1326 | static void snd_soc_instantiate_cards(void) | |
1327 | { | |
1328 | struct snd_soc_card *card; | |
1329 | list_for_each_entry(card, &card_list, list) | |
1330 | snd_soc_instantiate_card(card); | |
1331 | } | |
1332 | ||
1333 | /* probes a new socdev */ | |
1334 | static int soc_probe(struct platform_device *pdev) | |
1335 | { | |
1336 | int ret = 0; | |
1337 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
1338 | struct snd_soc_card *card = socdev->card; | |
1339 | ||
1340 | /* Bodge while we push things out of socdev */ | |
1341 | card->socdev = socdev; | |
1342 | ||
1343 | /* Bodge while we unpick instantiation */ | |
1344 | card->dev = &pdev->dev; | |
1345 | ret = snd_soc_register_card(card); | |
1346 | if (ret != 0) { | |
1347 | dev_err(&pdev->dev, "Failed to register card\n"); | |
1348 | return ret; | |
1349 | } | |
1350 | ||
1351 | return 0; | |
db2a4165 FM |
1352 | } |
1353 | ||
1354 | /* removes a socdev */ | |
1355 | static int soc_remove(struct platform_device *pdev) | |
1356 | { | |
1357 | int i; | |
1358 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
87506549 | 1359 | struct snd_soc_card *card = socdev->card; |
87689d56 | 1360 | struct snd_soc_platform *platform = card->platform; |
db2a4165 FM |
1361 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; |
1362 | ||
b2dfa62c GL |
1363 | if (card->instantiated) { |
1364 | run_delayed_work(&card->delayed_work); | |
914dc182 | 1365 | |
b2dfa62c GL |
1366 | if (platform->remove) |
1367 | platform->remove(pdev); | |
965ac42c | 1368 | |
b2dfa62c GL |
1369 | if (codec_dev->remove) |
1370 | codec_dev->remove(pdev); | |
db2a4165 | 1371 | |
b2dfa62c GL |
1372 | for (i = 0; i < card->num_links; i++) { |
1373 | struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai; | |
1374 | if (cpu_dai->remove) | |
1375 | cpu_dai->remove(pdev, cpu_dai); | |
1376 | } | |
db2a4165 | 1377 | |
b2dfa62c GL |
1378 | if (card->remove) |
1379 | card->remove(pdev); | |
db2a4165 FM |
1380 | } |
1381 | ||
c5af3a2e MB |
1382 | snd_soc_unregister_card(card); |
1383 | ||
db2a4165 FM |
1384 | return 0; |
1385 | } | |
1386 | ||
416356fc | 1387 | static int soc_poweroff(struct device *dev) |
51737470 | 1388 | { |
416356fc | 1389 | struct platform_device *pdev = to_platform_device(dev); |
51737470 MB |
1390 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
1391 | struct snd_soc_card *card = socdev->card; | |
1392 | ||
1393 | if (!card->instantiated) | |
416356fc | 1394 | return 0; |
51737470 MB |
1395 | |
1396 | /* Flush out pmdown_time work - we actually do want to run it | |
1397 | * now, we're shutting down so no imminent restart. */ | |
1398 | run_delayed_work(&card->delayed_work); | |
1399 | ||
1400 | snd_soc_dapm_shutdown(socdev); | |
416356fc MB |
1401 | |
1402 | return 0; | |
51737470 MB |
1403 | } |
1404 | ||
47145210 | 1405 | static const struct dev_pm_ops soc_pm_ops = { |
416356fc MB |
1406 | .suspend = soc_suspend, |
1407 | .resume = soc_resume, | |
1408 | .poweroff = soc_poweroff, | |
1409 | }; | |
1410 | ||
db2a4165 FM |
1411 | /* ASoC platform driver */ |
1412 | static struct platform_driver soc_driver = { | |
1413 | .driver = { | |
1414 | .name = "soc-audio", | |
8b45a209 | 1415 | .owner = THIS_MODULE, |
416356fc | 1416 | .pm = &soc_pm_ops, |
db2a4165 FM |
1417 | }, |
1418 | .probe = soc_probe, | |
1419 | .remove = soc_remove, | |
db2a4165 FM |
1420 | }; |
1421 | ||
1422 | /* create a new pcm */ | |
1423 | static int soc_new_pcm(struct snd_soc_device *socdev, | |
1424 | struct snd_soc_dai_link *dai_link, int num) | |
1425 | { | |
87689d56 | 1426 | struct snd_soc_card *card = socdev->card; |
6627a653 | 1427 | struct snd_soc_codec *codec = card->codec; |
87689d56 | 1428 | struct snd_soc_platform *platform = card->platform; |
3c4b266f LG |
1429 | struct snd_soc_dai *codec_dai = dai_link->codec_dai; |
1430 | struct snd_soc_dai *cpu_dai = dai_link->cpu_dai; | |
db2a4165 FM |
1431 | struct snd_soc_pcm_runtime *rtd; |
1432 | struct snd_pcm *pcm; | |
1433 | char new_name[64]; | |
1434 | int ret = 0, playback = 0, capture = 0; | |
1435 | ||
1436 | rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime), GFP_KERNEL); | |
1437 | if (rtd == NULL) | |
1438 | return -ENOMEM; | |
cb666e5b LG |
1439 | |
1440 | rtd->dai = dai_link; | |
db2a4165 | 1441 | rtd->socdev = socdev; |
6627a653 | 1442 | codec_dai->codec = card->codec; |
db2a4165 FM |
1443 | |
1444 | /* check client and interface hw capabilities */ | |
40ca1142 MB |
1445 | snprintf(new_name, sizeof(new_name), "%s %s-%d", |
1446 | dai_link->stream_name, codec_dai->name, num); | |
db2a4165 FM |
1447 | |
1448 | if (codec_dai->playback.channels_min) | |
1449 | playback = 1; | |
1450 | if (codec_dai->capture.channels_min) | |
1451 | capture = 1; | |
1452 | ||
1453 | ret = snd_pcm_new(codec->card, new_name, codec->pcm_devs++, playback, | |
1454 | capture, &pcm); | |
1455 | if (ret < 0) { | |
3ff3f64b MB |
1456 | printk(KERN_ERR "asoc: can't create pcm for codec %s\n", |
1457 | codec->name); | |
db2a4165 FM |
1458 | kfree(rtd); |
1459 | return ret; | |
1460 | } | |
1461 | ||
4ccab3e7 | 1462 | dai_link->pcm = pcm; |
db2a4165 | 1463 | pcm->private_data = rtd; |
87689d56 | 1464 | soc_pcm_ops.mmap = platform->pcm_ops->mmap; |
87689d56 MB |
1465 | soc_pcm_ops.ioctl = platform->pcm_ops->ioctl; |
1466 | soc_pcm_ops.copy = platform->pcm_ops->copy; | |
1467 | soc_pcm_ops.silence = platform->pcm_ops->silence; | |
1468 | soc_pcm_ops.ack = platform->pcm_ops->ack; | |
1469 | soc_pcm_ops.page = platform->pcm_ops->page; | |
db2a4165 FM |
1470 | |
1471 | if (playback) | |
1472 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &soc_pcm_ops); | |
1473 | ||
1474 | if (capture) | |
1475 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &soc_pcm_ops); | |
1476 | ||
87689d56 | 1477 | ret = platform->pcm_new(codec->card, codec_dai, pcm); |
db2a4165 FM |
1478 | if (ret < 0) { |
1479 | printk(KERN_ERR "asoc: platform pcm constructor failed\n"); | |
1480 | kfree(rtd); | |
1481 | return ret; | |
1482 | } | |
1483 | ||
87689d56 | 1484 | pcm->private_free = platform->pcm_free; |
db2a4165 FM |
1485 | printk(KERN_INFO "asoc: %s <-> %s mapping ok\n", codec_dai->name, |
1486 | cpu_dai->name); | |
1487 | return ret; | |
1488 | } | |
1489 | ||
096e49d5 MB |
1490 | /** |
1491 | * snd_soc_codec_volatile_register: Report if a register is volatile. | |
1492 | * | |
1493 | * @codec: CODEC to query. | |
1494 | * @reg: Register to query. | |
1495 | * | |
1496 | * Boolean function indiciating if a CODEC register is volatile. | |
1497 | */ | |
1498 | int snd_soc_codec_volatile_register(struct snd_soc_codec *codec, int reg) | |
1499 | { | |
1500 | if (codec->volatile_register) | |
1501 | return codec->volatile_register(reg); | |
1502 | else | |
1503 | return 0; | |
1504 | } | |
1505 | EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register); | |
1506 | ||
db2a4165 FM |
1507 | /** |
1508 | * snd_soc_new_ac97_codec - initailise AC97 device | |
1509 | * @codec: audio codec | |
1510 | * @ops: AC97 bus operations | |
1511 | * @num: AC97 codec number | |
1512 | * | |
1513 | * Initialises AC97 codec resources for use by ad-hoc devices only. | |
1514 | */ | |
1515 | int snd_soc_new_ac97_codec(struct snd_soc_codec *codec, | |
1516 | struct snd_ac97_bus_ops *ops, int num) | |
1517 | { | |
1518 | mutex_lock(&codec->mutex); | |
1519 | ||
1520 | codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL); | |
1521 | if (codec->ac97 == NULL) { | |
1522 | mutex_unlock(&codec->mutex); | |
1523 | return -ENOMEM; | |
1524 | } | |
1525 | ||
1526 | codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL); | |
1527 | if (codec->ac97->bus == NULL) { | |
1528 | kfree(codec->ac97); | |
1529 | codec->ac97 = NULL; | |
1530 | mutex_unlock(&codec->mutex); | |
1531 | return -ENOMEM; | |
1532 | } | |
1533 | ||
1534 | codec->ac97->bus->ops = ops; | |
1535 | codec->ac97->num = num; | |
2718625f | 1536 | codec->dev = &codec->ac97->dev; |
db2a4165 FM |
1537 | mutex_unlock(&codec->mutex); |
1538 | return 0; | |
1539 | } | |
1540 | EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec); | |
1541 | ||
1542 | /** | |
1543 | * snd_soc_free_ac97_codec - free AC97 codec device | |
1544 | * @codec: audio codec | |
1545 | * | |
1546 | * Frees AC97 codec device resources. | |
1547 | */ | |
1548 | void snd_soc_free_ac97_codec(struct snd_soc_codec *codec) | |
1549 | { | |
1550 | mutex_lock(&codec->mutex); | |
1551 | kfree(codec->ac97->bus); | |
1552 | kfree(codec->ac97); | |
1553 | codec->ac97 = NULL; | |
1554 | mutex_unlock(&codec->mutex); | |
1555 | } | |
1556 | EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec); | |
1557 | ||
1558 | /** | |
1559 | * snd_soc_update_bits - update codec register bits | |
1560 | * @codec: audio codec | |
1561 | * @reg: codec register | |
1562 | * @mask: register mask | |
1563 | * @value: new value | |
1564 | * | |
1565 | * Writes new register value. | |
1566 | * | |
1567 | * Returns 1 for change else 0. | |
1568 | */ | |
1569 | int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg, | |
46f5822f | 1570 | unsigned int mask, unsigned int value) |
db2a4165 FM |
1571 | { |
1572 | int change; | |
46f5822f | 1573 | unsigned int old, new; |
db2a4165 | 1574 | |
db2a4165 FM |
1575 | old = snd_soc_read(codec, reg); |
1576 | new = (old & ~mask) | value; | |
1577 | change = old != new; | |
1578 | if (change) | |
1579 | snd_soc_write(codec, reg, new); | |
1580 | ||
db2a4165 FM |
1581 | return change; |
1582 | } | |
1583 | EXPORT_SYMBOL_GPL(snd_soc_update_bits); | |
1584 | ||
6c508c62 EN |
1585 | /** |
1586 | * snd_soc_update_bits_locked - update codec register bits | |
1587 | * @codec: audio codec | |
1588 | * @reg: codec register | |
1589 | * @mask: register mask | |
1590 | * @value: new value | |
1591 | * | |
1592 | * Writes new register value, and takes the codec mutex. | |
1593 | * | |
1594 | * Returns 1 for change else 0. | |
1595 | */ | |
dd1b3d53 MB |
1596 | int snd_soc_update_bits_locked(struct snd_soc_codec *codec, |
1597 | unsigned short reg, unsigned int mask, | |
1598 | unsigned int value) | |
6c508c62 EN |
1599 | { |
1600 | int change; | |
1601 | ||
1602 | mutex_lock(&codec->mutex); | |
1603 | change = snd_soc_update_bits(codec, reg, mask, value); | |
1604 | mutex_unlock(&codec->mutex); | |
1605 | ||
1606 | return change; | |
1607 | } | |
dd1b3d53 | 1608 | EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked); |
6c508c62 | 1609 | |
db2a4165 FM |
1610 | /** |
1611 | * snd_soc_test_bits - test register for change | |
1612 | * @codec: audio codec | |
1613 | * @reg: codec register | |
1614 | * @mask: register mask | |
1615 | * @value: new value | |
1616 | * | |
1617 | * Tests a register with a new value and checks if the new value is | |
1618 | * different from the old value. | |
1619 | * | |
1620 | * Returns 1 for change else 0. | |
1621 | */ | |
1622 | int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg, | |
46f5822f | 1623 | unsigned int mask, unsigned int value) |
db2a4165 FM |
1624 | { |
1625 | int change; | |
46f5822f | 1626 | unsigned int old, new; |
db2a4165 | 1627 | |
db2a4165 FM |
1628 | old = snd_soc_read(codec, reg); |
1629 | new = (old & ~mask) | value; | |
1630 | change = old != new; | |
db2a4165 FM |
1631 | |
1632 | return change; | |
1633 | } | |
1634 | EXPORT_SYMBOL_GPL(snd_soc_test_bits); | |
1635 | ||
db2a4165 FM |
1636 | /** |
1637 | * snd_soc_new_pcms - create new sound card and pcms | |
1638 | * @socdev: the SoC audio device | |
ac11a2b3 MB |
1639 | * @idx: ALSA card index |
1640 | * @xid: card identification | |
db2a4165 FM |
1641 | * |
1642 | * Create a new sound card based upon the codec and interface pcms. | |
1643 | * | |
1644 | * Returns 0 for success, else error. | |
1645 | */ | |
bc7320c5 | 1646 | int snd_soc_new_pcms(struct snd_soc_device *socdev, int idx, const char *xid) |
db2a4165 | 1647 | { |
87506549 | 1648 | struct snd_soc_card *card = socdev->card; |
6627a653 | 1649 | struct snd_soc_codec *codec = card->codec; |
bd7dd77c | 1650 | int ret, i; |
db2a4165 FM |
1651 | |
1652 | mutex_lock(&codec->mutex); | |
1653 | ||
1654 | /* register a sound card */ | |
bd7dd77c TI |
1655 | ret = snd_card_create(idx, xid, codec->owner, 0, &codec->card); |
1656 | if (ret < 0) { | |
db2a4165 FM |
1657 | printk(KERN_ERR "asoc: can't create sound card for codec %s\n", |
1658 | codec->name); | |
1659 | mutex_unlock(&codec->mutex); | |
bd7dd77c | 1660 | return ret; |
db2a4165 FM |
1661 | } |
1662 | ||
452c5eaa | 1663 | codec->socdev = socdev; |
db2a4165 FM |
1664 | codec->card->dev = socdev->dev; |
1665 | codec->card->private_data = codec; | |
1666 | strncpy(codec->card->driver, codec->name, sizeof(codec->card->driver)); | |
1667 | ||
1668 | /* create the pcms */ | |
87506549 MB |
1669 | for (i = 0; i < card->num_links; i++) { |
1670 | ret = soc_new_pcm(socdev, &card->dai_link[i], i); | |
db2a4165 FM |
1671 | if (ret < 0) { |
1672 | printk(KERN_ERR "asoc: can't create pcm %s\n", | |
87506549 | 1673 | card->dai_link[i].stream_name); |
db2a4165 FM |
1674 | mutex_unlock(&codec->mutex); |
1675 | return ret; | |
1676 | } | |
fb48e3c6 GG |
1677 | /* Check for codec->ac97 to handle the ac97.c fun */ |
1678 | if (card->dai_link[i].codec_dai->ac97_control && codec->ac97) { | |
f7732053 BS |
1679 | snd_ac97_dev_add_pdata(codec->ac97, |
1680 | card->dai_link[i].cpu_dai->ac97_pdata); | |
1681 | } | |
db2a4165 FM |
1682 | } |
1683 | ||
1684 | mutex_unlock(&codec->mutex); | |
1685 | return ret; | |
1686 | } | |
1687 | EXPORT_SYMBOL_GPL(snd_soc_new_pcms); | |
1688 | ||
db2a4165 FM |
1689 | /** |
1690 | * snd_soc_free_pcms - free sound card and pcms | |
1691 | * @socdev: the SoC audio device | |
1692 | * | |
1693 | * Frees sound card and pcms associated with the socdev. | |
1694 | * Also unregister the codec if it is an AC97 device. | |
1695 | */ | |
1696 | void snd_soc_free_pcms(struct snd_soc_device *socdev) | |
1697 | { | |
6627a653 | 1698 | struct snd_soc_codec *codec = socdev->card->codec; |
a68660e0 | 1699 | #ifdef CONFIG_SND_SOC_AC97_BUS |
3c4b266f | 1700 | struct snd_soc_dai *codec_dai; |
a68660e0 LG |
1701 | int i; |
1702 | #endif | |
db2a4165 FM |
1703 | |
1704 | mutex_lock(&codec->mutex); | |
6627a653 | 1705 | soc_cleanup_codec_debugfs(codec); |
db2a4165 | 1706 | #ifdef CONFIG_SND_SOC_AC97_BUS |
3ff3f64b | 1707 | for (i = 0; i < codec->num_dai; i++) { |
a68660e0 | 1708 | codec_dai = &codec->dai[i]; |
d2314e0e AN |
1709 | if (codec_dai->ac97_control && codec->ac97 && |
1710 | strcmp(codec->name, "AC97") != 0) { | |
a68660e0 LG |
1711 | soc_ac97_dev_unregister(codec); |
1712 | goto free_card; | |
1713 | } | |
1714 | } | |
1715 | free_card: | |
db2a4165 FM |
1716 | #endif |
1717 | ||
1718 | if (codec->card) | |
1719 | snd_card_free(codec->card); | |
1720 | device_remove_file(socdev->dev, &dev_attr_codec_reg); | |
1721 | mutex_unlock(&codec->mutex); | |
1722 | } | |
1723 | EXPORT_SYMBOL_GPL(snd_soc_free_pcms); | |
1724 | ||
1725 | /** | |
1726 | * snd_soc_set_runtime_hwparams - set the runtime hardware parameters | |
1727 | * @substream: the pcm substream | |
1728 | * @hw: the hardware parameters | |
1729 | * | |
1730 | * Sets the substream runtime hardware parameters. | |
1731 | */ | |
1732 | int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream, | |
1733 | const struct snd_pcm_hardware *hw) | |
1734 | { | |
1735 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1736 | runtime->hw.info = hw->info; | |
1737 | runtime->hw.formats = hw->formats; | |
1738 | runtime->hw.period_bytes_min = hw->period_bytes_min; | |
1739 | runtime->hw.period_bytes_max = hw->period_bytes_max; | |
1740 | runtime->hw.periods_min = hw->periods_min; | |
1741 | runtime->hw.periods_max = hw->periods_max; | |
1742 | runtime->hw.buffer_bytes_max = hw->buffer_bytes_max; | |
1743 | runtime->hw.fifo_size = hw->fifo_size; | |
1744 | return 0; | |
1745 | } | |
1746 | EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams); | |
1747 | ||
1748 | /** | |
1749 | * snd_soc_cnew - create new control | |
1750 | * @_template: control template | |
1751 | * @data: control private data | |
ac11a2b3 | 1752 | * @long_name: control long name |
db2a4165 FM |
1753 | * |
1754 | * Create a new mixer control from a template control. | |
1755 | * | |
1756 | * Returns 0 for success, else error. | |
1757 | */ | |
1758 | struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template, | |
1759 | void *data, char *long_name) | |
1760 | { | |
1761 | struct snd_kcontrol_new template; | |
1762 | ||
1763 | memcpy(&template, _template, sizeof(template)); | |
1764 | if (long_name) | |
1765 | template.name = long_name; | |
db2a4165 FM |
1766 | template.index = 0; |
1767 | ||
1768 | return snd_ctl_new1(&template, data); | |
1769 | } | |
1770 | EXPORT_SYMBOL_GPL(snd_soc_cnew); | |
1771 | ||
3e8e1952 IM |
1772 | /** |
1773 | * snd_soc_add_controls - add an array of controls to a codec. | |
1774 | * Convienience function to add a list of controls. Many codecs were | |
1775 | * duplicating this code. | |
1776 | * | |
1777 | * @codec: codec to add controls to | |
1778 | * @controls: array of controls to add | |
1779 | * @num_controls: number of elements in the array | |
1780 | * | |
1781 | * Return 0 for success, else error. | |
1782 | */ | |
1783 | int snd_soc_add_controls(struct snd_soc_codec *codec, | |
1784 | const struct snd_kcontrol_new *controls, int num_controls) | |
1785 | { | |
1786 | struct snd_card *card = codec->card; | |
1787 | int err, i; | |
1788 | ||
1789 | for (i = 0; i < num_controls; i++) { | |
1790 | const struct snd_kcontrol_new *control = &controls[i]; | |
1791 | err = snd_ctl_add(card, snd_soc_cnew(control, codec, NULL)); | |
1792 | if (err < 0) { | |
1793 | dev_err(codec->dev, "%s: Failed to add %s\n", | |
1794 | codec->name, control->name); | |
1795 | return err; | |
1796 | } | |
1797 | } | |
1798 | ||
1799 | return 0; | |
1800 | } | |
1801 | EXPORT_SYMBOL_GPL(snd_soc_add_controls); | |
1802 | ||
db2a4165 FM |
1803 | /** |
1804 | * snd_soc_info_enum_double - enumerated double mixer info callback | |
1805 | * @kcontrol: mixer control | |
1806 | * @uinfo: control element information | |
1807 | * | |
1808 | * Callback to provide information about a double enumerated | |
1809 | * mixer control. | |
1810 | * | |
1811 | * Returns 0 for success. | |
1812 | */ | |
1813 | int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol, | |
1814 | struct snd_ctl_elem_info *uinfo) | |
1815 | { | |
1816 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1817 | ||
1818 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; | |
1819 | uinfo->count = e->shift_l == e->shift_r ? 1 : 2; | |
f8ba0b7b | 1820 | uinfo->value.enumerated.items = e->max; |
db2a4165 | 1821 | |
f8ba0b7b JS |
1822 | if (uinfo->value.enumerated.item > e->max - 1) |
1823 | uinfo->value.enumerated.item = e->max - 1; | |
db2a4165 FM |
1824 | strcpy(uinfo->value.enumerated.name, |
1825 | e->texts[uinfo->value.enumerated.item]); | |
1826 | return 0; | |
1827 | } | |
1828 | EXPORT_SYMBOL_GPL(snd_soc_info_enum_double); | |
1829 | ||
1830 | /** | |
1831 | * snd_soc_get_enum_double - enumerated double mixer get callback | |
1832 | * @kcontrol: mixer control | |
ac11a2b3 | 1833 | * @ucontrol: control element information |
db2a4165 FM |
1834 | * |
1835 | * Callback to get the value of a double enumerated mixer. | |
1836 | * | |
1837 | * Returns 0 for success. | |
1838 | */ | |
1839 | int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol, | |
1840 | struct snd_ctl_elem_value *ucontrol) | |
1841 | { | |
1842 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1843 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
46f5822f | 1844 | unsigned int val, bitmask; |
db2a4165 | 1845 | |
f8ba0b7b | 1846 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
db2a4165 FM |
1847 | ; |
1848 | val = snd_soc_read(codec, e->reg); | |
3ff3f64b MB |
1849 | ucontrol->value.enumerated.item[0] |
1850 | = (val >> e->shift_l) & (bitmask - 1); | |
db2a4165 FM |
1851 | if (e->shift_l != e->shift_r) |
1852 | ucontrol->value.enumerated.item[1] = | |
1853 | (val >> e->shift_r) & (bitmask - 1); | |
1854 | ||
1855 | return 0; | |
1856 | } | |
1857 | EXPORT_SYMBOL_GPL(snd_soc_get_enum_double); | |
1858 | ||
1859 | /** | |
1860 | * snd_soc_put_enum_double - enumerated double mixer put callback | |
1861 | * @kcontrol: mixer control | |
ac11a2b3 | 1862 | * @ucontrol: control element information |
db2a4165 FM |
1863 | * |
1864 | * Callback to set the value of a double enumerated mixer. | |
1865 | * | |
1866 | * Returns 0 for success. | |
1867 | */ | |
1868 | int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol, | |
1869 | struct snd_ctl_elem_value *ucontrol) | |
1870 | { | |
1871 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1872 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
46f5822f DR |
1873 | unsigned int val; |
1874 | unsigned int mask, bitmask; | |
db2a4165 | 1875 | |
f8ba0b7b | 1876 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
db2a4165 | 1877 | ; |
f8ba0b7b | 1878 | if (ucontrol->value.enumerated.item[0] > e->max - 1) |
db2a4165 FM |
1879 | return -EINVAL; |
1880 | val = ucontrol->value.enumerated.item[0] << e->shift_l; | |
1881 | mask = (bitmask - 1) << e->shift_l; | |
1882 | if (e->shift_l != e->shift_r) { | |
f8ba0b7b | 1883 | if (ucontrol->value.enumerated.item[1] > e->max - 1) |
db2a4165 FM |
1884 | return -EINVAL; |
1885 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
1886 | mask |= (bitmask - 1) << e->shift_r; | |
1887 | } | |
1888 | ||
6c508c62 | 1889 | return snd_soc_update_bits_locked(codec, e->reg, mask, val); |
db2a4165 FM |
1890 | } |
1891 | EXPORT_SYMBOL_GPL(snd_soc_put_enum_double); | |
1892 | ||
2e72f8e3 PU |
1893 | /** |
1894 | * snd_soc_get_value_enum_double - semi enumerated double mixer get callback | |
1895 | * @kcontrol: mixer control | |
1896 | * @ucontrol: control element information | |
1897 | * | |
1898 | * Callback to get the value of a double semi enumerated mixer. | |
1899 | * | |
1900 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
1901 | * used for handling bitfield coded enumeration for example. | |
1902 | * | |
1903 | * Returns 0 for success. | |
1904 | */ | |
1905 | int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol, | |
1906 | struct snd_ctl_elem_value *ucontrol) | |
1907 | { | |
1908 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
74155556 | 1909 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f | 1910 | unsigned int reg_val, val, mux; |
2e72f8e3 PU |
1911 | |
1912 | reg_val = snd_soc_read(codec, e->reg); | |
1913 | val = (reg_val >> e->shift_l) & e->mask; | |
1914 | for (mux = 0; mux < e->max; mux++) { | |
1915 | if (val == e->values[mux]) | |
1916 | break; | |
1917 | } | |
1918 | ucontrol->value.enumerated.item[0] = mux; | |
1919 | if (e->shift_l != e->shift_r) { | |
1920 | val = (reg_val >> e->shift_r) & e->mask; | |
1921 | for (mux = 0; mux < e->max; mux++) { | |
1922 | if (val == e->values[mux]) | |
1923 | break; | |
1924 | } | |
1925 | ucontrol->value.enumerated.item[1] = mux; | |
1926 | } | |
1927 | ||
1928 | return 0; | |
1929 | } | |
1930 | EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double); | |
1931 | ||
1932 | /** | |
1933 | * snd_soc_put_value_enum_double - semi enumerated double mixer put callback | |
1934 | * @kcontrol: mixer control | |
1935 | * @ucontrol: control element information | |
1936 | * | |
1937 | * Callback to set the value of a double semi enumerated mixer. | |
1938 | * | |
1939 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
1940 | * used for handling bitfield coded enumeration for example. | |
1941 | * | |
1942 | * Returns 0 for success. | |
1943 | */ | |
1944 | int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol, | |
1945 | struct snd_ctl_elem_value *ucontrol) | |
1946 | { | |
1947 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
74155556 | 1948 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f DR |
1949 | unsigned int val; |
1950 | unsigned int mask; | |
2e72f8e3 PU |
1951 | |
1952 | if (ucontrol->value.enumerated.item[0] > e->max - 1) | |
1953 | return -EINVAL; | |
1954 | val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l; | |
1955 | mask = e->mask << e->shift_l; | |
1956 | if (e->shift_l != e->shift_r) { | |
1957 | if (ucontrol->value.enumerated.item[1] > e->max - 1) | |
1958 | return -EINVAL; | |
1959 | val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r; | |
1960 | mask |= e->mask << e->shift_r; | |
1961 | } | |
1962 | ||
6c508c62 | 1963 | return snd_soc_update_bits_locked(codec, e->reg, mask, val); |
2e72f8e3 PU |
1964 | } |
1965 | EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double); | |
1966 | ||
db2a4165 FM |
1967 | /** |
1968 | * snd_soc_info_enum_ext - external enumerated single mixer info callback | |
1969 | * @kcontrol: mixer control | |
1970 | * @uinfo: control element information | |
1971 | * | |
1972 | * Callback to provide information about an external enumerated | |
1973 | * single mixer. | |
1974 | * | |
1975 | * Returns 0 for success. | |
1976 | */ | |
1977 | int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol, | |
1978 | struct snd_ctl_elem_info *uinfo) | |
1979 | { | |
1980 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1981 | ||
1982 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; | |
1983 | uinfo->count = 1; | |
f8ba0b7b | 1984 | uinfo->value.enumerated.items = e->max; |
db2a4165 | 1985 | |
f8ba0b7b JS |
1986 | if (uinfo->value.enumerated.item > e->max - 1) |
1987 | uinfo->value.enumerated.item = e->max - 1; | |
db2a4165 FM |
1988 | strcpy(uinfo->value.enumerated.name, |
1989 | e->texts[uinfo->value.enumerated.item]); | |
1990 | return 0; | |
1991 | } | |
1992 | EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext); | |
1993 | ||
1994 | /** | |
1995 | * snd_soc_info_volsw_ext - external single mixer info callback | |
1996 | * @kcontrol: mixer control | |
1997 | * @uinfo: control element information | |
1998 | * | |
1999 | * Callback to provide information about a single external mixer control. | |
2000 | * | |
2001 | * Returns 0 for success. | |
2002 | */ | |
2003 | int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol, | |
2004 | struct snd_ctl_elem_info *uinfo) | |
2005 | { | |
a7a4ac86 PZ |
2006 | int max = kcontrol->private_value; |
2007 | ||
fd5dfad9 | 2008 | if (max == 1 && !strstr(kcontrol->id.name, " Volume")) |
a7a4ac86 PZ |
2009 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; |
2010 | else | |
2011 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
db2a4165 | 2012 | |
db2a4165 FM |
2013 | uinfo->count = 1; |
2014 | uinfo->value.integer.min = 0; | |
a7a4ac86 | 2015 | uinfo->value.integer.max = max; |
db2a4165 FM |
2016 | return 0; |
2017 | } | |
2018 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext); | |
2019 | ||
db2a4165 FM |
2020 | /** |
2021 | * snd_soc_info_volsw - single mixer info callback | |
2022 | * @kcontrol: mixer control | |
2023 | * @uinfo: control element information | |
2024 | * | |
2025 | * Callback to provide information about a single mixer control. | |
2026 | * | |
2027 | * Returns 0 for success. | |
2028 | */ | |
2029 | int snd_soc_info_volsw(struct snd_kcontrol *kcontrol, | |
2030 | struct snd_ctl_elem_info *uinfo) | |
2031 | { | |
4eaa9819 JS |
2032 | struct soc_mixer_control *mc = |
2033 | (struct soc_mixer_control *)kcontrol->private_value; | |
d11bb4a9 | 2034 | int platform_max; |
762b8df7 | 2035 | unsigned int shift = mc->shift; |
815ecf8d | 2036 | unsigned int rshift = mc->rshift; |
db2a4165 | 2037 | |
d11bb4a9 PU |
2038 | if (!mc->platform_max) |
2039 | mc->platform_max = mc->max; | |
2040 | platform_max = mc->platform_max; | |
2041 | ||
2042 | if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume")) | |
a7a4ac86 PZ |
2043 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; |
2044 | else | |
2045 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
2046 | ||
db2a4165 FM |
2047 | uinfo->count = shift == rshift ? 1 : 2; |
2048 | uinfo->value.integer.min = 0; | |
d11bb4a9 | 2049 | uinfo->value.integer.max = platform_max; |
db2a4165 FM |
2050 | return 0; |
2051 | } | |
2052 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw); | |
2053 | ||
2054 | /** | |
2055 | * snd_soc_get_volsw - single mixer get callback | |
2056 | * @kcontrol: mixer control | |
ac11a2b3 | 2057 | * @ucontrol: control element information |
db2a4165 FM |
2058 | * |
2059 | * Callback to get the value of a single mixer control. | |
2060 | * | |
2061 | * Returns 0 for success. | |
2062 | */ | |
2063 | int snd_soc_get_volsw(struct snd_kcontrol *kcontrol, | |
2064 | struct snd_ctl_elem_value *ucontrol) | |
2065 | { | |
4eaa9819 JS |
2066 | struct soc_mixer_control *mc = |
2067 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 2068 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
2069 | unsigned int reg = mc->reg; |
2070 | unsigned int shift = mc->shift; | |
2071 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 2072 | int max = mc->max; |
815ecf8d JS |
2073 | unsigned int mask = (1 << fls(max)) - 1; |
2074 | unsigned int invert = mc->invert; | |
db2a4165 FM |
2075 | |
2076 | ucontrol->value.integer.value[0] = | |
2077 | (snd_soc_read(codec, reg) >> shift) & mask; | |
2078 | if (shift != rshift) | |
2079 | ucontrol->value.integer.value[1] = | |
2080 | (snd_soc_read(codec, reg) >> rshift) & mask; | |
2081 | if (invert) { | |
2082 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 2083 | max - ucontrol->value.integer.value[0]; |
db2a4165 FM |
2084 | if (shift != rshift) |
2085 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 2086 | max - ucontrol->value.integer.value[1]; |
db2a4165 FM |
2087 | } |
2088 | ||
2089 | return 0; | |
2090 | } | |
2091 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw); | |
2092 | ||
2093 | /** | |
2094 | * snd_soc_put_volsw - single mixer put callback | |
2095 | * @kcontrol: mixer control | |
ac11a2b3 | 2096 | * @ucontrol: control element information |
db2a4165 FM |
2097 | * |
2098 | * Callback to set the value of a single mixer control. | |
2099 | * | |
2100 | * Returns 0 for success. | |
2101 | */ | |
2102 | int snd_soc_put_volsw(struct snd_kcontrol *kcontrol, | |
2103 | struct snd_ctl_elem_value *ucontrol) | |
2104 | { | |
4eaa9819 JS |
2105 | struct soc_mixer_control *mc = |
2106 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 2107 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
2108 | unsigned int reg = mc->reg; |
2109 | unsigned int shift = mc->shift; | |
2110 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 2111 | int max = mc->max; |
815ecf8d JS |
2112 | unsigned int mask = (1 << fls(max)) - 1; |
2113 | unsigned int invert = mc->invert; | |
46f5822f | 2114 | unsigned int val, val2, val_mask; |
db2a4165 FM |
2115 | |
2116 | val = (ucontrol->value.integer.value[0] & mask); | |
2117 | if (invert) | |
a7a4ac86 | 2118 | val = max - val; |
db2a4165 FM |
2119 | val_mask = mask << shift; |
2120 | val = val << shift; | |
2121 | if (shift != rshift) { | |
2122 | val2 = (ucontrol->value.integer.value[1] & mask); | |
2123 | if (invert) | |
a7a4ac86 | 2124 | val2 = max - val2; |
db2a4165 FM |
2125 | val_mask |= mask << rshift; |
2126 | val |= val2 << rshift; | |
2127 | } | |
6c508c62 | 2128 | return snd_soc_update_bits_locked(codec, reg, val_mask, val); |
db2a4165 FM |
2129 | } |
2130 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw); | |
2131 | ||
2132 | /** | |
2133 | * snd_soc_info_volsw_2r - double mixer info callback | |
2134 | * @kcontrol: mixer control | |
2135 | * @uinfo: control element information | |
2136 | * | |
2137 | * Callback to provide information about a double mixer control that | |
2138 | * spans 2 codec registers. | |
2139 | * | |
2140 | * Returns 0 for success. | |
2141 | */ | |
2142 | int snd_soc_info_volsw_2r(struct snd_kcontrol *kcontrol, | |
2143 | struct snd_ctl_elem_info *uinfo) | |
2144 | { | |
4eaa9819 JS |
2145 | struct soc_mixer_control *mc = |
2146 | (struct soc_mixer_control *)kcontrol->private_value; | |
d11bb4a9 | 2147 | int platform_max; |
a7a4ac86 | 2148 | |
d11bb4a9 PU |
2149 | if (!mc->platform_max) |
2150 | mc->platform_max = mc->max; | |
2151 | platform_max = mc->platform_max; | |
2152 | ||
2153 | if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume")) | |
a7a4ac86 PZ |
2154 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; |
2155 | else | |
2156 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
db2a4165 | 2157 | |
db2a4165 FM |
2158 | uinfo->count = 2; |
2159 | uinfo->value.integer.min = 0; | |
d11bb4a9 | 2160 | uinfo->value.integer.max = platform_max; |
db2a4165 FM |
2161 | return 0; |
2162 | } | |
2163 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r); | |
2164 | ||
2165 | /** | |
2166 | * snd_soc_get_volsw_2r - double mixer get callback | |
2167 | * @kcontrol: mixer control | |
ac11a2b3 | 2168 | * @ucontrol: control element information |
db2a4165 FM |
2169 | * |
2170 | * Callback to get the value of a double mixer control that spans 2 registers. | |
2171 | * | |
2172 | * Returns 0 for success. | |
2173 | */ | |
2174 | int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol, | |
2175 | struct snd_ctl_elem_value *ucontrol) | |
2176 | { | |
4eaa9819 JS |
2177 | struct soc_mixer_control *mc = |
2178 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 2179 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
2180 | unsigned int reg = mc->reg; |
2181 | unsigned int reg2 = mc->rreg; | |
2182 | unsigned int shift = mc->shift; | |
4eaa9819 | 2183 | int max = mc->max; |
46f5822f | 2184 | unsigned int mask = (1 << fls(max)) - 1; |
815ecf8d | 2185 | unsigned int invert = mc->invert; |
db2a4165 FM |
2186 | |
2187 | ucontrol->value.integer.value[0] = | |
2188 | (snd_soc_read(codec, reg) >> shift) & mask; | |
2189 | ucontrol->value.integer.value[1] = | |
2190 | (snd_soc_read(codec, reg2) >> shift) & mask; | |
2191 | if (invert) { | |
2192 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 2193 | max - ucontrol->value.integer.value[0]; |
db2a4165 | 2194 | ucontrol->value.integer.value[1] = |
a7a4ac86 | 2195 | max - ucontrol->value.integer.value[1]; |
db2a4165 FM |
2196 | } |
2197 | ||
2198 | return 0; | |
2199 | } | |
2200 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r); | |
2201 | ||
2202 | /** | |
2203 | * snd_soc_put_volsw_2r - double mixer set callback | |
2204 | * @kcontrol: mixer control | |
ac11a2b3 | 2205 | * @ucontrol: control element information |
db2a4165 FM |
2206 | * |
2207 | * Callback to set the value of a double mixer control that spans 2 registers. | |
2208 | * | |
2209 | * Returns 0 for success. | |
2210 | */ | |
2211 | int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol, | |
2212 | struct snd_ctl_elem_value *ucontrol) | |
2213 | { | |
4eaa9819 JS |
2214 | struct soc_mixer_control *mc = |
2215 | (struct soc_mixer_control *)kcontrol->private_value; | |
db2a4165 | 2216 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d JS |
2217 | unsigned int reg = mc->reg; |
2218 | unsigned int reg2 = mc->rreg; | |
2219 | unsigned int shift = mc->shift; | |
4eaa9819 | 2220 | int max = mc->max; |
815ecf8d JS |
2221 | unsigned int mask = (1 << fls(max)) - 1; |
2222 | unsigned int invert = mc->invert; | |
db2a4165 | 2223 | int err; |
46f5822f | 2224 | unsigned int val, val2, val_mask; |
db2a4165 FM |
2225 | |
2226 | val_mask = mask << shift; | |
2227 | val = (ucontrol->value.integer.value[0] & mask); | |
2228 | val2 = (ucontrol->value.integer.value[1] & mask); | |
2229 | ||
2230 | if (invert) { | |
a7a4ac86 PZ |
2231 | val = max - val; |
2232 | val2 = max - val2; | |
db2a4165 FM |
2233 | } |
2234 | ||
2235 | val = val << shift; | |
2236 | val2 = val2 << shift; | |
2237 | ||
6c508c62 | 2238 | err = snd_soc_update_bits_locked(codec, reg, val_mask, val); |
3ff3f64b | 2239 | if (err < 0) |
db2a4165 FM |
2240 | return err; |
2241 | ||
6c508c62 | 2242 | err = snd_soc_update_bits_locked(codec, reg2, val_mask, val2); |
db2a4165 FM |
2243 | return err; |
2244 | } | |
2245 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r); | |
2246 | ||
e13ac2e9 MB |
2247 | /** |
2248 | * snd_soc_info_volsw_s8 - signed mixer info callback | |
2249 | * @kcontrol: mixer control | |
2250 | * @uinfo: control element information | |
2251 | * | |
2252 | * Callback to provide information about a signed mixer control. | |
2253 | * | |
2254 | * Returns 0 for success. | |
2255 | */ | |
2256 | int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol, | |
2257 | struct snd_ctl_elem_info *uinfo) | |
2258 | { | |
4eaa9819 JS |
2259 | struct soc_mixer_control *mc = |
2260 | (struct soc_mixer_control *)kcontrol->private_value; | |
d11bb4a9 | 2261 | int platform_max; |
4eaa9819 | 2262 | int min = mc->min; |
e13ac2e9 | 2263 | |
d11bb4a9 PU |
2264 | if (!mc->platform_max) |
2265 | mc->platform_max = mc->max; | |
2266 | platform_max = mc->platform_max; | |
2267 | ||
e13ac2e9 MB |
2268 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
2269 | uinfo->count = 2; | |
2270 | uinfo->value.integer.min = 0; | |
d11bb4a9 | 2271 | uinfo->value.integer.max = platform_max - min; |
e13ac2e9 MB |
2272 | return 0; |
2273 | } | |
2274 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8); | |
2275 | ||
2276 | /** | |
2277 | * snd_soc_get_volsw_s8 - signed mixer get callback | |
2278 | * @kcontrol: mixer control | |
ac11a2b3 | 2279 | * @ucontrol: control element information |
e13ac2e9 MB |
2280 | * |
2281 | * Callback to get the value of a signed mixer control. | |
2282 | * | |
2283 | * Returns 0 for success. | |
2284 | */ | |
2285 | int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol, | |
2286 | struct snd_ctl_elem_value *ucontrol) | |
2287 | { | |
4eaa9819 JS |
2288 | struct soc_mixer_control *mc = |
2289 | (struct soc_mixer_control *)kcontrol->private_value; | |
e13ac2e9 | 2290 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d | 2291 | unsigned int reg = mc->reg; |
4eaa9819 | 2292 | int min = mc->min; |
e13ac2e9 MB |
2293 | int val = snd_soc_read(codec, reg); |
2294 | ||
2295 | ucontrol->value.integer.value[0] = | |
2296 | ((signed char)(val & 0xff))-min; | |
2297 | ucontrol->value.integer.value[1] = | |
2298 | ((signed char)((val >> 8) & 0xff))-min; | |
2299 | return 0; | |
2300 | } | |
2301 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8); | |
2302 | ||
2303 | /** | |
2304 | * snd_soc_put_volsw_sgn - signed mixer put callback | |
2305 | * @kcontrol: mixer control | |
ac11a2b3 | 2306 | * @ucontrol: control element information |
e13ac2e9 MB |
2307 | * |
2308 | * Callback to set the value of a signed mixer control. | |
2309 | * | |
2310 | * Returns 0 for success. | |
2311 | */ | |
2312 | int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol, | |
2313 | struct snd_ctl_elem_value *ucontrol) | |
2314 | { | |
4eaa9819 JS |
2315 | struct soc_mixer_control *mc = |
2316 | (struct soc_mixer_control *)kcontrol->private_value; | |
e13ac2e9 | 2317 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
815ecf8d | 2318 | unsigned int reg = mc->reg; |
4eaa9819 | 2319 | int min = mc->min; |
46f5822f | 2320 | unsigned int val; |
e13ac2e9 MB |
2321 | |
2322 | val = (ucontrol->value.integer.value[0]+min) & 0xff; | |
2323 | val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8; | |
2324 | ||
6c508c62 | 2325 | return snd_soc_update_bits_locked(codec, reg, 0xffff, val); |
e13ac2e9 MB |
2326 | } |
2327 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8); | |
2328 | ||
637d3847 PU |
2329 | /** |
2330 | * snd_soc_limit_volume - Set new limit to an existing volume control. | |
2331 | * | |
2332 | * @codec: where to look for the control | |
2333 | * @name: Name of the control | |
2334 | * @max: new maximum limit | |
2335 | * | |
2336 | * Return 0 for success, else error. | |
2337 | */ | |
2338 | int snd_soc_limit_volume(struct snd_soc_codec *codec, | |
2339 | const char *name, int max) | |
2340 | { | |
2341 | struct snd_card *card = codec->card; | |
2342 | struct snd_kcontrol *kctl; | |
2343 | struct soc_mixer_control *mc; | |
2344 | int found = 0; | |
2345 | int ret = -EINVAL; | |
2346 | ||
2347 | /* Sanity check for name and max */ | |
2348 | if (unlikely(!name || max <= 0)) | |
2349 | return -EINVAL; | |
2350 | ||
2351 | list_for_each_entry(kctl, &card->controls, list) { | |
2352 | if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) { | |
2353 | found = 1; | |
2354 | break; | |
2355 | } | |
2356 | } | |
2357 | if (found) { | |
2358 | mc = (struct soc_mixer_control *)kctl->private_value; | |
2359 | if (max <= mc->max) { | |
d11bb4a9 | 2360 | mc->platform_max = max; |
637d3847 PU |
2361 | ret = 0; |
2362 | } | |
2363 | } | |
2364 | return ret; | |
2365 | } | |
2366 | EXPORT_SYMBOL_GPL(snd_soc_limit_volume); | |
2367 | ||
b6f4bb38 | 2368 | /** |
2369 | * snd_soc_info_volsw_2r_sx - double with tlv and variable data size | |
2370 | * mixer info callback | |
2371 | * @kcontrol: mixer control | |
2372 | * @uinfo: control element information | |
2373 | * | |
2374 | * Returns 0 for success. | |
2375 | */ | |
2376 | int snd_soc_info_volsw_2r_sx(struct snd_kcontrol *kcontrol, | |
2377 | struct snd_ctl_elem_info *uinfo) | |
2378 | { | |
2379 | struct soc_mixer_control *mc = | |
2380 | (struct soc_mixer_control *)kcontrol->private_value; | |
2381 | int max = mc->max; | |
2382 | int min = mc->min; | |
2383 | ||
2384 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
2385 | uinfo->count = 2; | |
2386 | uinfo->value.integer.min = 0; | |
2387 | uinfo->value.integer.max = max-min; | |
2388 | ||
2389 | return 0; | |
2390 | } | |
2391 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r_sx); | |
2392 | ||
2393 | /** | |
2394 | * snd_soc_get_volsw_2r_sx - double with tlv and variable data size | |
2395 | * mixer get callback | |
2396 | * @kcontrol: mixer control | |
2397 | * @uinfo: control element information | |
2398 | * | |
2399 | * Returns 0 for success. | |
2400 | */ | |
2401 | int snd_soc_get_volsw_2r_sx(struct snd_kcontrol *kcontrol, | |
2402 | struct snd_ctl_elem_value *ucontrol) | |
2403 | { | |
2404 | struct soc_mixer_control *mc = | |
2405 | (struct soc_mixer_control *)kcontrol->private_value; | |
2406 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
2407 | unsigned int mask = (1<<mc->shift)-1; | |
2408 | int min = mc->min; | |
2409 | int val = snd_soc_read(codec, mc->reg) & mask; | |
2410 | int valr = snd_soc_read(codec, mc->rreg) & mask; | |
2411 | ||
20630c7f SL |
2412 | ucontrol->value.integer.value[0] = ((val & 0xff)-min) & mask; |
2413 | ucontrol->value.integer.value[1] = ((valr & 0xff)-min) & mask; | |
b6f4bb38 | 2414 | return 0; |
2415 | } | |
2416 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r_sx); | |
2417 | ||
2418 | /** | |
2419 | * snd_soc_put_volsw_2r_sx - double with tlv and variable data size | |
2420 | * mixer put callback | |
2421 | * @kcontrol: mixer control | |
2422 | * @uinfo: control element information | |
2423 | * | |
2424 | * Returns 0 for success. | |
2425 | */ | |
2426 | int snd_soc_put_volsw_2r_sx(struct snd_kcontrol *kcontrol, | |
2427 | struct snd_ctl_elem_value *ucontrol) | |
2428 | { | |
2429 | struct soc_mixer_control *mc = | |
2430 | (struct soc_mixer_control *)kcontrol->private_value; | |
2431 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
2432 | unsigned int mask = (1<<mc->shift)-1; | |
2433 | int min = mc->min; | |
2434 | int ret; | |
2435 | unsigned int val, valr, oval, ovalr; | |
2436 | ||
2437 | val = ((ucontrol->value.integer.value[0]+min) & 0xff); | |
2438 | val &= mask; | |
2439 | valr = ((ucontrol->value.integer.value[1]+min) & 0xff); | |
2440 | valr &= mask; | |
2441 | ||
2442 | oval = snd_soc_read(codec, mc->reg) & mask; | |
2443 | ovalr = snd_soc_read(codec, mc->rreg) & mask; | |
2444 | ||
2445 | ret = 0; | |
2446 | if (oval != val) { | |
2447 | ret = snd_soc_write(codec, mc->reg, val); | |
2448 | if (ret < 0) | |
f1df5aec | 2449 | return ret; |
b6f4bb38 | 2450 | } |
2451 | if (ovalr != valr) { | |
2452 | ret = snd_soc_write(codec, mc->rreg, valr); | |
2453 | if (ret < 0) | |
f1df5aec | 2454 | return ret; |
b6f4bb38 | 2455 | } |
2456 | ||
2457 | return 0; | |
2458 | } | |
2459 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r_sx); | |
2460 | ||
8c6529db LG |
2461 | /** |
2462 | * snd_soc_dai_set_sysclk - configure DAI system or master clock. | |
2463 | * @dai: DAI | |
2464 | * @clk_id: DAI specific clock ID | |
2465 | * @freq: new clock frequency in Hz | |
2466 | * @dir: new clock direction - input/output. | |
2467 | * | |
2468 | * Configures the DAI master (MCLK) or system (SYSCLK) clocking. | |
2469 | */ | |
2470 | int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id, | |
2471 | unsigned int freq, int dir) | |
2472 | { | |
3f1a4d82 | 2473 | if (dai->ops && dai->ops->set_sysclk) |
6335d055 | 2474 | return dai->ops->set_sysclk(dai, clk_id, freq, dir); |
8c6529db LG |
2475 | else |
2476 | return -EINVAL; | |
2477 | } | |
2478 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk); | |
2479 | ||
2480 | /** | |
2481 | * snd_soc_dai_set_clkdiv - configure DAI clock dividers. | |
2482 | * @dai: DAI | |
ac11a2b3 | 2483 | * @div_id: DAI specific clock divider ID |
8c6529db LG |
2484 | * @div: new clock divisor. |
2485 | * | |
2486 | * Configures the clock dividers. This is used to derive the best DAI bit and | |
2487 | * frame clocks from the system or master clock. It's best to set the DAI bit | |
2488 | * and frame clocks as low as possible to save system power. | |
2489 | */ | |
2490 | int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai, | |
2491 | int div_id, int div) | |
2492 | { | |
3f1a4d82 | 2493 | if (dai->ops && dai->ops->set_clkdiv) |
6335d055 | 2494 | return dai->ops->set_clkdiv(dai, div_id, div); |
8c6529db LG |
2495 | else |
2496 | return -EINVAL; | |
2497 | } | |
2498 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv); | |
2499 | ||
2500 | /** | |
2501 | * snd_soc_dai_set_pll - configure DAI PLL. | |
2502 | * @dai: DAI | |
2503 | * @pll_id: DAI specific PLL ID | |
85488037 | 2504 | * @source: DAI specific source for the PLL |
8c6529db LG |
2505 | * @freq_in: PLL input clock frequency in Hz |
2506 | * @freq_out: requested PLL output clock frequency in Hz | |
2507 | * | |
2508 | * Configures and enables PLL to generate output clock based on input clock. | |
2509 | */ | |
85488037 MB |
2510 | int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source, |
2511 | unsigned int freq_in, unsigned int freq_out) | |
8c6529db | 2512 | { |
3f1a4d82 | 2513 | if (dai->ops && dai->ops->set_pll) |
85488037 MB |
2514 | return dai->ops->set_pll(dai, pll_id, source, |
2515 | freq_in, freq_out); | |
8c6529db LG |
2516 | else |
2517 | return -EINVAL; | |
2518 | } | |
2519 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll); | |
2520 | ||
2521 | /** | |
2522 | * snd_soc_dai_set_fmt - configure DAI hardware audio format. | |
2523 | * @dai: DAI | |
8c6529db LG |
2524 | * @fmt: SND_SOC_DAIFMT_ format value. |
2525 | * | |
2526 | * Configures the DAI hardware format and clocking. | |
2527 | */ | |
2528 | int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) | |
2529 | { | |
3f1a4d82 | 2530 | if (dai->ops && dai->ops->set_fmt) |
6335d055 | 2531 | return dai->ops->set_fmt(dai, fmt); |
8c6529db LG |
2532 | else |
2533 | return -EINVAL; | |
2534 | } | |
2535 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt); | |
2536 | ||
2537 | /** | |
2538 | * snd_soc_dai_set_tdm_slot - configure DAI TDM. | |
2539 | * @dai: DAI | |
a5479e38 DR |
2540 | * @tx_mask: bitmask representing active TX slots. |
2541 | * @rx_mask: bitmask representing active RX slots. | |
8c6529db | 2542 | * @slots: Number of slots in use. |
a5479e38 | 2543 | * @slot_width: Width in bits for each slot. |
8c6529db LG |
2544 | * |
2545 | * Configures a DAI for TDM operation. Both mask and slots are codec and DAI | |
2546 | * specific. | |
2547 | */ | |
2548 | int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai, | |
a5479e38 | 2549 | unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width) |
8c6529db | 2550 | { |
3f1a4d82 | 2551 | if (dai->ops && dai->ops->set_tdm_slot) |
a5479e38 DR |
2552 | return dai->ops->set_tdm_slot(dai, tx_mask, rx_mask, |
2553 | slots, slot_width); | |
8c6529db LG |
2554 | else |
2555 | return -EINVAL; | |
2556 | } | |
2557 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot); | |
2558 | ||
472df3cb BS |
2559 | /** |
2560 | * snd_soc_dai_set_channel_map - configure DAI audio channel map | |
2561 | * @dai: DAI | |
2562 | * @tx_num: how many TX channels | |
2563 | * @tx_slot: pointer to an array which imply the TX slot number channel | |
2564 | * 0~num-1 uses | |
2565 | * @rx_num: how many RX channels | |
2566 | * @rx_slot: pointer to an array which imply the RX slot number channel | |
2567 | * 0~num-1 uses | |
2568 | * | |
2569 | * configure the relationship between channel number and TDM slot number. | |
2570 | */ | |
2571 | int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai, | |
2572 | unsigned int tx_num, unsigned int *tx_slot, | |
2573 | unsigned int rx_num, unsigned int *rx_slot) | |
2574 | { | |
2575 | if (dai->ops && dai->ops->set_channel_map) | |
2576 | return dai->ops->set_channel_map(dai, tx_num, tx_slot, | |
2577 | rx_num, rx_slot); | |
2578 | else | |
2579 | return -EINVAL; | |
2580 | } | |
2581 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map); | |
2582 | ||
8c6529db LG |
2583 | /** |
2584 | * snd_soc_dai_set_tristate - configure DAI system or master clock. | |
2585 | * @dai: DAI | |
2586 | * @tristate: tristate enable | |
2587 | * | |
2588 | * Tristates the DAI so that others can use it. | |
2589 | */ | |
2590 | int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate) | |
2591 | { | |
3f1a4d82 | 2592 | if (dai->ops && dai->ops->set_tristate) |
6335d055 | 2593 | return dai->ops->set_tristate(dai, tristate); |
8c6529db LG |
2594 | else |
2595 | return -EINVAL; | |
2596 | } | |
2597 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate); | |
2598 | ||
2599 | /** | |
2600 | * snd_soc_dai_digital_mute - configure DAI system or master clock. | |
2601 | * @dai: DAI | |
2602 | * @mute: mute enable | |
2603 | * | |
2604 | * Mutes the DAI DAC. | |
2605 | */ | |
2606 | int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute) | |
2607 | { | |
3f1a4d82 | 2608 | if (dai->ops && dai->ops->digital_mute) |
6335d055 | 2609 | return dai->ops->digital_mute(dai, mute); |
8c6529db LG |
2610 | else |
2611 | return -EINVAL; | |
2612 | } | |
2613 | EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute); | |
2614 | ||
c5af3a2e MB |
2615 | /** |
2616 | * snd_soc_register_card - Register a card with the ASoC core | |
2617 | * | |
ac11a2b3 | 2618 | * @card: Card to register |
c5af3a2e MB |
2619 | * |
2620 | * Note that currently this is an internal only function: it will be | |
2621 | * exposed to machine drivers after further backporting of ASoC v2 | |
2622 | * registration APIs. | |
2623 | */ | |
2624 | static int snd_soc_register_card(struct snd_soc_card *card) | |
2625 | { | |
2626 | if (!card->name || !card->dev) | |
2627 | return -EINVAL; | |
2628 | ||
2629 | INIT_LIST_HEAD(&card->list); | |
2630 | card->instantiated = 0; | |
2631 | ||
2632 | mutex_lock(&client_mutex); | |
2633 | list_add(&card->list, &card_list); | |
435c5e25 | 2634 | snd_soc_instantiate_cards(); |
c5af3a2e MB |
2635 | mutex_unlock(&client_mutex); |
2636 | ||
2637 | dev_dbg(card->dev, "Registered card '%s'\n", card->name); | |
2638 | ||
2639 | return 0; | |
2640 | } | |
2641 | ||
2642 | /** | |
2643 | * snd_soc_unregister_card - Unregister a card with the ASoC core | |
2644 | * | |
ac11a2b3 | 2645 | * @card: Card to unregister |
c5af3a2e MB |
2646 | * |
2647 | * Note that currently this is an internal only function: it will be | |
2648 | * exposed to machine drivers after further backporting of ASoC v2 | |
2649 | * registration APIs. | |
2650 | */ | |
2651 | static int snd_soc_unregister_card(struct snd_soc_card *card) | |
2652 | { | |
2653 | mutex_lock(&client_mutex); | |
2654 | list_del(&card->list); | |
2655 | mutex_unlock(&client_mutex); | |
2656 | ||
2657 | dev_dbg(card->dev, "Unregistered card '%s'\n", card->name); | |
2658 | ||
2659 | return 0; | |
2660 | } | |
2661 | ||
9115171a MB |
2662 | /** |
2663 | * snd_soc_register_dai - Register a DAI with the ASoC core | |
2664 | * | |
ac11a2b3 | 2665 | * @dai: DAI to register |
9115171a MB |
2666 | */ |
2667 | int snd_soc_register_dai(struct snd_soc_dai *dai) | |
2668 | { | |
2669 | if (!dai->name) | |
2670 | return -EINVAL; | |
2671 | ||
2672 | /* The device should become mandatory over time */ | |
2673 | if (!dai->dev) | |
2674 | printk(KERN_WARNING "No device for DAI %s\n", dai->name); | |
2675 | ||
6335d055 EM |
2676 | if (!dai->ops) |
2677 | dai->ops = &null_dai_ops; | |
2678 | ||
9115171a MB |
2679 | INIT_LIST_HEAD(&dai->list); |
2680 | ||
2681 | mutex_lock(&client_mutex); | |
2682 | list_add(&dai->list, &dai_list); | |
435c5e25 | 2683 | snd_soc_instantiate_cards(); |
9115171a MB |
2684 | mutex_unlock(&client_mutex); |
2685 | ||
2686 | pr_debug("Registered DAI '%s'\n", dai->name); | |
2687 | ||
2688 | return 0; | |
2689 | } | |
2690 | EXPORT_SYMBOL_GPL(snd_soc_register_dai); | |
2691 | ||
2692 | /** | |
2693 | * snd_soc_unregister_dai - Unregister a DAI from the ASoC core | |
2694 | * | |
ac11a2b3 | 2695 | * @dai: DAI to unregister |
9115171a MB |
2696 | */ |
2697 | void snd_soc_unregister_dai(struct snd_soc_dai *dai) | |
2698 | { | |
2699 | mutex_lock(&client_mutex); | |
2700 | list_del(&dai->list); | |
2701 | mutex_unlock(&client_mutex); | |
2702 | ||
2703 | pr_debug("Unregistered DAI '%s'\n", dai->name); | |
2704 | } | |
2705 | EXPORT_SYMBOL_GPL(snd_soc_unregister_dai); | |
2706 | ||
2707 | /** | |
2708 | * snd_soc_register_dais - Register multiple DAIs with the ASoC core | |
2709 | * | |
ac11a2b3 MB |
2710 | * @dai: Array of DAIs to register |
2711 | * @count: Number of DAIs | |
9115171a MB |
2712 | */ |
2713 | int snd_soc_register_dais(struct snd_soc_dai *dai, size_t count) | |
2714 | { | |
2715 | int i, ret; | |
2716 | ||
2717 | for (i = 0; i < count; i++) { | |
2718 | ret = snd_soc_register_dai(&dai[i]); | |
2719 | if (ret != 0) | |
2720 | goto err; | |
2721 | } | |
2722 | ||
2723 | return 0; | |
2724 | ||
2725 | err: | |
2726 | for (i--; i >= 0; i--) | |
2727 | snd_soc_unregister_dai(&dai[i]); | |
2728 | ||
2729 | return ret; | |
2730 | } | |
2731 | EXPORT_SYMBOL_GPL(snd_soc_register_dais); | |
2732 | ||
2733 | /** | |
2734 | * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core | |
2735 | * | |
ac11a2b3 MB |
2736 | * @dai: Array of DAIs to unregister |
2737 | * @count: Number of DAIs | |
9115171a MB |
2738 | */ |
2739 | void snd_soc_unregister_dais(struct snd_soc_dai *dai, size_t count) | |
2740 | { | |
2741 | int i; | |
2742 | ||
2743 | for (i = 0; i < count; i++) | |
2744 | snd_soc_unregister_dai(&dai[i]); | |
2745 | } | |
2746 | EXPORT_SYMBOL_GPL(snd_soc_unregister_dais); | |
2747 | ||
12a48a8c MB |
2748 | /** |
2749 | * snd_soc_register_platform - Register a platform with the ASoC core | |
2750 | * | |
ac11a2b3 | 2751 | * @platform: platform to register |
12a48a8c MB |
2752 | */ |
2753 | int snd_soc_register_platform(struct snd_soc_platform *platform) | |
2754 | { | |
2755 | if (!platform->name) | |
2756 | return -EINVAL; | |
2757 | ||
2758 | INIT_LIST_HEAD(&platform->list); | |
2759 | ||
2760 | mutex_lock(&client_mutex); | |
2761 | list_add(&platform->list, &platform_list); | |
435c5e25 | 2762 | snd_soc_instantiate_cards(); |
12a48a8c MB |
2763 | mutex_unlock(&client_mutex); |
2764 | ||
2765 | pr_debug("Registered platform '%s'\n", platform->name); | |
2766 | ||
2767 | return 0; | |
2768 | } | |
2769 | EXPORT_SYMBOL_GPL(snd_soc_register_platform); | |
2770 | ||
2771 | /** | |
2772 | * snd_soc_unregister_platform - Unregister a platform from the ASoC core | |
2773 | * | |
ac11a2b3 | 2774 | * @platform: platform to unregister |
12a48a8c MB |
2775 | */ |
2776 | void snd_soc_unregister_platform(struct snd_soc_platform *platform) | |
2777 | { | |
2778 | mutex_lock(&client_mutex); | |
2779 | list_del(&platform->list); | |
2780 | mutex_unlock(&client_mutex); | |
2781 | ||
2782 | pr_debug("Unregistered platform '%s'\n", platform->name); | |
2783 | } | |
2784 | EXPORT_SYMBOL_GPL(snd_soc_unregister_platform); | |
2785 | ||
151ab22c MB |
2786 | static u64 codec_format_map[] = { |
2787 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE, | |
2788 | SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE, | |
2789 | SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE, | |
2790 | SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_U24_BE, | |
2791 | SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE, | |
2792 | SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_U32_BE, | |
2793 | SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_U24_3BE, | |
2794 | SNDRV_PCM_FMTBIT_U24_3LE | SNDRV_PCM_FMTBIT_U24_3BE, | |
2795 | SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE, | |
2796 | SNDRV_PCM_FMTBIT_U20_3LE | SNDRV_PCM_FMTBIT_U20_3BE, | |
2797 | SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE, | |
2798 | SNDRV_PCM_FMTBIT_U18_3LE | SNDRV_PCM_FMTBIT_U18_3BE, | |
2799 | SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE, | |
2800 | SNDRV_PCM_FMTBIT_FLOAT64_LE | SNDRV_PCM_FMTBIT_FLOAT64_BE, | |
2801 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE | |
2802 | | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE, | |
2803 | }; | |
2804 | ||
2805 | /* Fix up the DAI formats for endianness: codecs don't actually see | |
2806 | * the endianness of the data but we're using the CPU format | |
2807 | * definitions which do need to include endianness so we ensure that | |
2808 | * codec DAIs always have both big and little endian variants set. | |
2809 | */ | |
2810 | static void fixup_codec_formats(struct snd_soc_pcm_stream *stream) | |
2811 | { | |
2812 | int i; | |
2813 | ||
2814 | for (i = 0; i < ARRAY_SIZE(codec_format_map); i++) | |
2815 | if (stream->formats & codec_format_map[i]) | |
2816 | stream->formats |= codec_format_map[i]; | |
2817 | } | |
2818 | ||
0d0cf00a MB |
2819 | /** |
2820 | * snd_soc_register_codec - Register a codec with the ASoC core | |
2821 | * | |
ac11a2b3 | 2822 | * @codec: codec to register |
0d0cf00a MB |
2823 | */ |
2824 | int snd_soc_register_codec(struct snd_soc_codec *codec) | |
2825 | { | |
151ab22c MB |
2826 | int i; |
2827 | ||
0d0cf00a MB |
2828 | if (!codec->name) |
2829 | return -EINVAL; | |
2830 | ||
2831 | /* The device should become mandatory over time */ | |
2832 | if (!codec->dev) | |
2833 | printk(KERN_WARNING "No device for codec %s\n", codec->name); | |
2834 | ||
2835 | INIT_LIST_HEAD(&codec->list); | |
2836 | ||
151ab22c MB |
2837 | for (i = 0; i < codec->num_dai; i++) { |
2838 | fixup_codec_formats(&codec->dai[i].playback); | |
2839 | fixup_codec_formats(&codec->dai[i].capture); | |
2840 | } | |
2841 | ||
0d0cf00a MB |
2842 | mutex_lock(&client_mutex); |
2843 | list_add(&codec->list, &codec_list); | |
2844 | snd_soc_instantiate_cards(); | |
2845 | mutex_unlock(&client_mutex); | |
2846 | ||
2847 | pr_debug("Registered codec '%s'\n", codec->name); | |
2848 | ||
2849 | return 0; | |
2850 | } | |
2851 | EXPORT_SYMBOL_GPL(snd_soc_register_codec); | |
2852 | ||
2853 | /** | |
2854 | * snd_soc_unregister_codec - Unregister a codec from the ASoC core | |
2855 | * | |
ac11a2b3 | 2856 | * @codec: codec to unregister |
0d0cf00a MB |
2857 | */ |
2858 | void snd_soc_unregister_codec(struct snd_soc_codec *codec) | |
2859 | { | |
2860 | mutex_lock(&client_mutex); | |
2861 | list_del(&codec->list); | |
2862 | mutex_unlock(&client_mutex); | |
2863 | ||
2864 | pr_debug("Unregistered codec '%s'\n", codec->name); | |
2865 | } | |
2866 | EXPORT_SYMBOL_GPL(snd_soc_unregister_codec); | |
2867 | ||
c9b3a40f | 2868 | static int __init snd_soc_init(void) |
db2a4165 | 2869 | { |
384c89e2 MB |
2870 | #ifdef CONFIG_DEBUG_FS |
2871 | debugfs_root = debugfs_create_dir("asoc", NULL); | |
2872 | if (IS_ERR(debugfs_root) || !debugfs_root) { | |
2873 | printk(KERN_WARNING | |
2874 | "ASoC: Failed to create debugfs directory\n"); | |
2875 | debugfs_root = NULL; | |
2876 | } | |
2877 | #endif | |
2878 | ||
db2a4165 FM |
2879 | return platform_driver_register(&soc_driver); |
2880 | } | |
2881 | ||
7d8c16a6 | 2882 | static void __exit snd_soc_exit(void) |
db2a4165 | 2883 | { |
384c89e2 MB |
2884 | #ifdef CONFIG_DEBUG_FS |
2885 | debugfs_remove_recursive(debugfs_root); | |
2886 | #endif | |
3ff3f64b | 2887 | platform_driver_unregister(&soc_driver); |
db2a4165 FM |
2888 | } |
2889 | ||
2890 | module_init(snd_soc_init); | |
2891 | module_exit(snd_soc_exit); | |
2892 | ||
2893 | /* Module information */ | |
d331124d | 2894 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
db2a4165 FM |
2895 | MODULE_DESCRIPTION("ALSA SoC Core"); |
2896 | MODULE_LICENSE("GPL"); | |
8b45a209 | 2897 | MODULE_ALIAS("platform:soc-audio"); |