Commit | Line | Data |
---|---|---|
1245b700 NK |
1 | /* |
2 | * soc-compress.c -- ALSA SoC Compress | |
3 | * | |
4 | * Copyright (C) 2012 Intel Corp. | |
5 | * | |
6 | * Authors: Namarta Kohli <namartax.kohli@intel.com> | |
7 | * Ramesh Babu K V <ramesh.babu@linux.intel.com> | |
8 | * Vinod Koul <vinod.koul@linux.intel.com> | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify it | |
11 | * under the terms of the GNU General Public License as published by the | |
12 | * Free Software Foundation; either version 2 of the License, or (at your | |
13 | * option) any later version. | |
14 | * | |
15 | */ | |
16 | ||
17 | #include <linux/kernel.h> | |
18 | #include <linux/init.h> | |
19 | #include <linux/delay.h> | |
20 | #include <linux/slab.h> | |
21 | #include <linux/workqueue.h> | |
22 | #include <sound/core.h> | |
23 | #include <sound/compress_params.h> | |
24 | #include <sound/compress_driver.h> | |
25 | #include <sound/soc.h> | |
26 | #include <sound/initval.h> | |
27 | ||
28 | static int soc_compr_open(struct snd_compr_stream *cstream) | |
29 | { | |
30 | struct snd_soc_pcm_runtime *rtd = cstream->private_data; | |
31 | struct snd_soc_platform *platform = rtd->platform; | |
32 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
33 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
34 | int ret = 0; | |
35 | ||
15e2e619 CK |
36 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
37 | ||
1245b700 NK |
38 | if (platform->driver->compr_ops && platform->driver->compr_ops->open) { |
39 | ret = platform->driver->compr_ops->open(cstream); | |
40 | if (ret < 0) { | |
41 | pr_err("compress asoc: can't open platform %s\n", platform->name); | |
42 | goto out; | |
43 | } | |
44 | } | |
45 | ||
46 | if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->startup) { | |
47 | ret = rtd->dai_link->compr_ops->startup(cstream); | |
48 | if (ret < 0) { | |
49 | pr_err("compress asoc: %s startup failed\n", rtd->dai_link->name); | |
50 | goto machine_err; | |
51 | } | |
52 | } | |
53 | ||
54 | if (cstream->direction == SND_COMPRESS_PLAYBACK) { | |
55 | cpu_dai->playback_active++; | |
56 | codec_dai->playback_active++; | |
57 | } else { | |
58 | cpu_dai->capture_active++; | |
59 | codec_dai->capture_active++; | |
60 | } | |
61 | ||
62 | cpu_dai->active++; | |
63 | codec_dai->active++; | |
64 | rtd->codec->active++; | |
65 | ||
15e2e619 CK |
66 | mutex_unlock(&rtd->pcm_mutex); |
67 | ||
1245b700 NK |
68 | return 0; |
69 | ||
70 | machine_err: | |
71 | if (platform->driver->compr_ops && platform->driver->compr_ops->free) | |
72 | platform->driver->compr_ops->free(cstream); | |
73 | out: | |
15e2e619 | 74 | mutex_unlock(&rtd->pcm_mutex); |
1245b700 NK |
75 | return ret; |
76 | } | |
77 | ||
202c8f70 CK |
78 | /* |
79 | * Power down the audio subsystem pmdown_time msecs after close is called. | |
80 | * This is to ensure there are no pops or clicks in between any music tracks | |
81 | * due to DAPM power cycling. | |
82 | */ | |
83 | static void close_delayed_work(struct work_struct *work) | |
84 | { | |
85 | struct snd_soc_pcm_runtime *rtd = | |
86 | container_of(work, struct snd_soc_pcm_runtime, delayed_work.work); | |
87 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
88 | ||
89 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); | |
90 | ||
91 | dev_dbg(rtd->dev, "ASoC: pop wq checking: %s status: %s waiting: %s\n", | |
92 | codec_dai->driver->playback.stream_name, | |
93 | codec_dai->playback_active ? "active" : "inactive", | |
94 | rtd->pop_wait ? "yes" : "no"); | |
95 | ||
96 | /* are we waiting on this codec DAI stream */ | |
97 | if (rtd->pop_wait == 1) { | |
98 | rtd->pop_wait = 0; | |
99 | snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK, | |
100 | SND_SOC_DAPM_STREAM_STOP); | |
101 | } | |
102 | ||
103 | mutex_unlock(&rtd->pcm_mutex); | |
104 | } | |
105 | ||
1245b700 NK |
106 | static int soc_compr_free(struct snd_compr_stream *cstream) |
107 | { | |
108 | struct snd_soc_pcm_runtime *rtd = cstream->private_data; | |
109 | struct snd_soc_platform *platform = rtd->platform; | |
110 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
111 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
112 | struct snd_soc_codec *codec = rtd->codec; | |
113 | ||
15e2e619 CK |
114 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
115 | ||
1245b700 NK |
116 | if (cstream->direction == SND_COMPRESS_PLAYBACK) { |
117 | cpu_dai->playback_active--; | |
118 | codec_dai->playback_active--; | |
119 | } else { | |
120 | cpu_dai->capture_active--; | |
121 | codec_dai->capture_active--; | |
122 | } | |
123 | ||
da18396f MB |
124 | snd_soc_dai_digital_mute(codec_dai, 1, cstream->direction); |
125 | ||
1245b700 NK |
126 | cpu_dai->active--; |
127 | codec_dai->active--; | |
128 | codec->active--; | |
129 | ||
130 | if (!cpu_dai->active) | |
131 | cpu_dai->rate = 0; | |
132 | ||
133 | if (!codec_dai->active) | |
134 | codec_dai->rate = 0; | |
135 | ||
136 | ||
137 | if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->shutdown) | |
138 | rtd->dai_link->compr_ops->shutdown(cstream); | |
139 | ||
140 | if (platform->driver->compr_ops && platform->driver->compr_ops->free) | |
141 | platform->driver->compr_ops->free(cstream); | |
9d2667a9 | 142 | cpu_dai->runtime = NULL; |
1245b700 NK |
143 | |
144 | if (cstream->direction == SND_COMPRESS_PLAYBACK) { | |
145 | if (!rtd->pmdown_time || codec->ignore_pmdown_time || | |
146 | rtd->dai_link->ignore_pmdown_time) { | |
147 | snd_soc_dapm_stream_event(rtd, | |
148 | SNDRV_PCM_STREAM_PLAYBACK, | |
149 | SND_SOC_DAPM_STREAM_STOP); | |
8c3d2aa4 | 150 | } else { |
9bffb1fb | 151 | rtd->pop_wait = 1; |
3d24cfe4 MB |
152 | queue_delayed_work(system_power_efficient_wq, |
153 | &rtd->delayed_work, | |
154 | msecs_to_jiffies(rtd->pmdown_time)); | |
8c3d2aa4 | 155 | } |
1245b700 NK |
156 | } else { |
157 | /* capture streams can be powered down now */ | |
158 | snd_soc_dapm_stream_event(rtd, | |
159 | SNDRV_PCM_STREAM_CAPTURE, | |
160 | SND_SOC_DAPM_STREAM_STOP); | |
161 | } | |
162 | ||
15e2e619 | 163 | mutex_unlock(&rtd->pcm_mutex); |
1245b700 NK |
164 | return 0; |
165 | } | |
166 | ||
167 | static int soc_compr_trigger(struct snd_compr_stream *cstream, int cmd) | |
168 | { | |
169 | ||
170 | struct snd_soc_pcm_runtime *rtd = cstream->private_data; | |
171 | struct snd_soc_platform *platform = rtd->platform; | |
172 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
173 | int ret = 0; | |
174 | ||
15e2e619 CK |
175 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
176 | ||
1245b700 NK |
177 | if (platform->driver->compr_ops && platform->driver->compr_ops->trigger) { |
178 | ret = platform->driver->compr_ops->trigger(cstream, cmd); | |
179 | if (ret < 0) | |
15e2e619 | 180 | goto out; |
1245b700 NK |
181 | } |
182 | ||
da18396f MB |
183 | switch (cmd) { |
184 | case SNDRV_PCM_TRIGGER_START: | |
185 | snd_soc_dai_digital_mute(codec_dai, 0, cstream->direction); | |
186 | break; | |
187 | case SNDRV_PCM_TRIGGER_STOP: | |
188 | snd_soc_dai_digital_mute(codec_dai, 1, cstream->direction); | |
189 | break; | |
e38b9b74 | 190 | } |
1245b700 | 191 | |
15e2e619 CK |
192 | out: |
193 | mutex_unlock(&rtd->pcm_mutex); | |
1245b700 NK |
194 | return ret; |
195 | } | |
196 | ||
197 | static int soc_compr_set_params(struct snd_compr_stream *cstream, | |
198 | struct snd_compr_params *params) | |
199 | { | |
200 | struct snd_soc_pcm_runtime *rtd = cstream->private_data; | |
201 | struct snd_soc_platform *platform = rtd->platform; | |
1245b700 NK |
202 | int ret = 0; |
203 | ||
15e2e619 CK |
204 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
205 | ||
1245b700 NK |
206 | /* first we call set_params for the platform driver |
207 | * this should configure the soc side | |
208 | * if the machine has compressed ops then we call that as well | |
209 | * expectation is that platform and machine will configure everything | |
210 | * for this compress path, like configuring pcm port for codec | |
211 | */ | |
212 | if (platform->driver->compr_ops && platform->driver->compr_ops->set_params) { | |
213 | ret = platform->driver->compr_ops->set_params(cstream, params); | |
214 | if (ret < 0) | |
fa40ef20 | 215 | goto err; |
1245b700 NK |
216 | } |
217 | ||
218 | if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->set_params) { | |
219 | ret = rtd->dai_link->compr_ops->set_params(cstream); | |
220 | if (ret < 0) | |
fa40ef20 | 221 | goto err; |
1245b700 NK |
222 | } |
223 | ||
2c071ed7 CK |
224 | if (cstream->direction == SND_COMPRESS_PLAYBACK) |
225 | snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK, | |
226 | SND_SOC_DAPM_STREAM_START); | |
227 | else | |
228 | snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_CAPTURE, | |
229 | SND_SOC_DAPM_STREAM_START); | |
1245b700 | 230 | |
fa40ef20 CK |
231 | /* cancel any delayed stream shutdown that is pending */ |
232 | rtd->pop_wait = 0; | |
233 | mutex_unlock(&rtd->pcm_mutex); | |
234 | ||
235 | cancel_delayed_work_sync(&rtd->delayed_work); | |
236 | ||
237 | return ret; | |
238 | ||
239 | err: | |
15e2e619 | 240 | mutex_unlock(&rtd->pcm_mutex); |
1245b700 NK |
241 | return ret; |
242 | } | |
243 | ||
244 | static int soc_compr_get_params(struct snd_compr_stream *cstream, | |
245 | struct snd_codec *params) | |
246 | { | |
247 | struct snd_soc_pcm_runtime *rtd = cstream->private_data; | |
248 | struct snd_soc_platform *platform = rtd->platform; | |
249 | int ret = 0; | |
250 | ||
15e2e619 CK |
251 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
252 | ||
1245b700 NK |
253 | if (platform->driver->compr_ops && platform->driver->compr_ops->get_params) |
254 | ret = platform->driver->compr_ops->get_params(cstream, params); | |
255 | ||
15e2e619 | 256 | mutex_unlock(&rtd->pcm_mutex); |
1245b700 NK |
257 | return ret; |
258 | } | |
259 | ||
260 | static int soc_compr_get_caps(struct snd_compr_stream *cstream, | |
261 | struct snd_compr_caps *caps) | |
262 | { | |
263 | struct snd_soc_pcm_runtime *rtd = cstream->private_data; | |
264 | struct snd_soc_platform *platform = rtd->platform; | |
265 | int ret = 0; | |
266 | ||
15e2e619 CK |
267 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
268 | ||
1245b700 NK |
269 | if (platform->driver->compr_ops && platform->driver->compr_ops->get_caps) |
270 | ret = platform->driver->compr_ops->get_caps(cstream, caps); | |
271 | ||
15e2e619 | 272 | mutex_unlock(&rtd->pcm_mutex); |
1245b700 NK |
273 | return ret; |
274 | } | |
275 | ||
276 | static int soc_compr_get_codec_caps(struct snd_compr_stream *cstream, | |
277 | struct snd_compr_codec_caps *codec) | |
278 | { | |
279 | struct snd_soc_pcm_runtime *rtd = cstream->private_data; | |
280 | struct snd_soc_platform *platform = rtd->platform; | |
281 | int ret = 0; | |
282 | ||
15e2e619 CK |
283 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
284 | ||
1245b700 NK |
285 | if (platform->driver->compr_ops && platform->driver->compr_ops->get_codec_caps) |
286 | ret = platform->driver->compr_ops->get_codec_caps(cstream, codec); | |
287 | ||
15e2e619 | 288 | mutex_unlock(&rtd->pcm_mutex); |
1245b700 NK |
289 | return ret; |
290 | } | |
291 | ||
292 | static int soc_compr_ack(struct snd_compr_stream *cstream, size_t bytes) | |
293 | { | |
294 | struct snd_soc_pcm_runtime *rtd = cstream->private_data; | |
295 | struct snd_soc_platform *platform = rtd->platform; | |
296 | int ret = 0; | |
297 | ||
15e2e619 CK |
298 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
299 | ||
1245b700 NK |
300 | if (platform->driver->compr_ops && platform->driver->compr_ops->ack) |
301 | ret = platform->driver->compr_ops->ack(cstream, bytes); | |
302 | ||
15e2e619 | 303 | mutex_unlock(&rtd->pcm_mutex); |
1245b700 NK |
304 | return ret; |
305 | } | |
306 | ||
307 | static int soc_compr_pointer(struct snd_compr_stream *cstream, | |
308 | struct snd_compr_tstamp *tstamp) | |
309 | { | |
310 | struct snd_soc_pcm_runtime *rtd = cstream->private_data; | |
311 | struct snd_soc_platform *platform = rtd->platform; | |
312 | ||
15e2e619 CK |
313 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
314 | ||
1245b700 NK |
315 | if (platform->driver->compr_ops && platform->driver->compr_ops->pointer) |
316 | platform->driver->compr_ops->pointer(cstream, tstamp); | |
317 | ||
15e2e619 | 318 | mutex_unlock(&rtd->pcm_mutex); |
1245b700 NK |
319 | return 0; |
320 | } | |
321 | ||
1f88eb0f | 322 | static int soc_compr_copy(struct snd_compr_stream *cstream, |
4daf891c | 323 | char __user *buf, size_t count) |
1f88eb0f CK |
324 | { |
325 | struct snd_soc_pcm_runtime *rtd = cstream->private_data; | |
326 | struct snd_soc_platform *platform = rtd->platform; | |
327 | int ret = 0; | |
328 | ||
329 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); | |
330 | ||
331 | if (platform->driver->compr_ops && platform->driver->compr_ops->copy) | |
332 | ret = platform->driver->compr_ops->copy(cstream, buf, count); | |
333 | ||
334 | mutex_unlock(&rtd->pcm_mutex); | |
335 | return ret; | |
336 | } | |
337 | ||
02bd90e8 | 338 | static int soc_compr_set_metadata(struct snd_compr_stream *cstream, |
36953d98 JK |
339 | struct snd_compr_metadata *metadata) |
340 | { | |
341 | struct snd_soc_pcm_runtime *rtd = cstream->private_data; | |
342 | struct snd_soc_platform *platform = rtd->platform; | |
343 | int ret = 0; | |
344 | ||
345 | if (platform->driver->compr_ops && platform->driver->compr_ops->set_metadata) | |
346 | ret = platform->driver->compr_ops->set_metadata(cstream, metadata); | |
347 | ||
348 | return ret; | |
349 | } | |
350 | ||
02bd90e8 | 351 | static int soc_compr_get_metadata(struct snd_compr_stream *cstream, |
36953d98 JK |
352 | struct snd_compr_metadata *metadata) |
353 | { | |
354 | struct snd_soc_pcm_runtime *rtd = cstream->private_data; | |
355 | struct snd_soc_platform *platform = rtd->platform; | |
356 | int ret = 0; | |
357 | ||
358 | if (platform->driver->compr_ops && platform->driver->compr_ops->get_metadata) | |
359 | ret = platform->driver->compr_ops->get_metadata(cstream, metadata); | |
360 | ||
361 | return ret; | |
362 | } | |
1245b700 NK |
363 | /* ASoC Compress operations */ |
364 | static struct snd_compr_ops soc_compr_ops = { | |
365 | .open = soc_compr_open, | |
366 | .free = soc_compr_free, | |
367 | .set_params = soc_compr_set_params, | |
02bd90e8 VK |
368 | .set_metadata = soc_compr_set_metadata, |
369 | .get_metadata = soc_compr_get_metadata, | |
1245b700 NK |
370 | .get_params = soc_compr_get_params, |
371 | .trigger = soc_compr_trigger, | |
372 | .pointer = soc_compr_pointer, | |
373 | .ack = soc_compr_ack, | |
374 | .get_caps = soc_compr_get_caps, | |
375 | .get_codec_caps = soc_compr_get_codec_caps | |
376 | }; | |
377 | ||
378 | /* create a new compress */ | |
379 | int soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num) | |
380 | { | |
381 | struct snd_soc_codec *codec = rtd->codec; | |
1f88eb0f | 382 | struct snd_soc_platform *platform = rtd->platform; |
1245b700 NK |
383 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
384 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
385 | struct snd_compr *compr; | |
386 | char new_name[64]; | |
387 | int ret = 0, direction = 0; | |
388 | ||
389 | /* check client and interface hw capabilities */ | |
390 | snprintf(new_name, sizeof(new_name), "%s %s-%d", | |
391 | rtd->dai_link->stream_name, codec_dai->name, num); | |
daa2db59 CK |
392 | |
393 | if (codec_dai->driver->playback.channels_min) | |
394 | direction = SND_COMPRESS_PLAYBACK; | |
395 | else if (codec_dai->driver->capture.channels_min) | |
396 | direction = SND_COMPRESS_CAPTURE; | |
397 | else | |
398 | return -EINVAL; | |
399 | ||
1245b700 NK |
400 | compr = kzalloc(sizeof(*compr), GFP_KERNEL); |
401 | if (compr == NULL) { | |
402 | snd_printk(KERN_ERR "Cannot allocate compr\n"); | |
403 | return -ENOMEM; | |
404 | } | |
405 | ||
1f88eb0f CK |
406 | compr->ops = devm_kzalloc(rtd->card->dev, sizeof(soc_compr_ops), |
407 | GFP_KERNEL); | |
408 | if (compr->ops == NULL) { | |
409 | dev_err(rtd->card->dev, "Cannot allocate compressed ops\n"); | |
410 | ret = -ENOMEM; | |
411 | goto compr_err; | |
412 | } | |
413 | memcpy(compr->ops, &soc_compr_ops, sizeof(soc_compr_ops)); | |
414 | ||
415 | /* Add copy callback for not memory mapped DSPs */ | |
416 | if (platform->driver->compr_ops && platform->driver->compr_ops->copy) | |
417 | compr->ops->copy = soc_compr_copy; | |
418 | ||
1245b700 NK |
419 | mutex_init(&compr->lock); |
420 | ret = snd_compress_new(rtd->card->snd_card, num, direction, compr); | |
421 | if (ret < 0) { | |
422 | pr_err("compress asoc: can't create compress for codec %s\n", | |
423 | codec->name); | |
1f88eb0f | 424 | goto compr_err; |
1245b700 NK |
425 | } |
426 | ||
202c8f70 CK |
427 | /* DAPM dai link stream work */ |
428 | INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work); | |
429 | ||
1245b700 NK |
430 | rtd->compr = compr; |
431 | compr->private_data = rtd; | |
432 | ||
433 | printk(KERN_INFO "compress asoc: %s <-> %s mapping ok\n", codec_dai->name, | |
434 | cpu_dai->name); | |
435 | return ret; | |
1f88eb0f CK |
436 | |
437 | compr_err: | |
438 | kfree(compr); | |
439 | return ret; | |
1245b700 | 440 | } |