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; |
1245b700 NK |
152 | schedule_delayed_work(&rtd->delayed_work, |
153 | msecs_to_jiffies(rtd->pmdown_time)); | |
8c3d2aa4 | 154 | } |
1245b700 NK |
155 | } else { |
156 | /* capture streams can be powered down now */ | |
157 | snd_soc_dapm_stream_event(rtd, | |
158 | SNDRV_PCM_STREAM_CAPTURE, | |
159 | SND_SOC_DAPM_STREAM_STOP); | |
160 | } | |
161 | ||
15e2e619 | 162 | mutex_unlock(&rtd->pcm_mutex); |
1245b700 NK |
163 | return 0; |
164 | } | |
165 | ||
166 | static int soc_compr_trigger(struct snd_compr_stream *cstream, int cmd) | |
167 | { | |
168 | ||
169 | struct snd_soc_pcm_runtime *rtd = cstream->private_data; | |
170 | struct snd_soc_platform *platform = rtd->platform; | |
171 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
172 | int ret = 0; | |
173 | ||
15e2e619 CK |
174 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
175 | ||
1245b700 NK |
176 | if (platform->driver->compr_ops && platform->driver->compr_ops->trigger) { |
177 | ret = platform->driver->compr_ops->trigger(cstream, cmd); | |
178 | if (ret < 0) | |
15e2e619 | 179 | goto out; |
1245b700 NK |
180 | } |
181 | ||
da18396f MB |
182 | switch (cmd) { |
183 | case SNDRV_PCM_TRIGGER_START: | |
184 | snd_soc_dai_digital_mute(codec_dai, 0, cstream->direction); | |
185 | break; | |
186 | case SNDRV_PCM_TRIGGER_STOP: | |
187 | snd_soc_dai_digital_mute(codec_dai, 1, cstream->direction); | |
188 | break; | |
e38b9b74 | 189 | } |
1245b700 | 190 | |
15e2e619 CK |
191 | out: |
192 | mutex_unlock(&rtd->pcm_mutex); | |
1245b700 NK |
193 | return ret; |
194 | } | |
195 | ||
196 | static int soc_compr_set_params(struct snd_compr_stream *cstream, | |
197 | struct snd_compr_params *params) | |
198 | { | |
199 | struct snd_soc_pcm_runtime *rtd = cstream->private_data; | |
200 | struct snd_soc_platform *platform = rtd->platform; | |
1245b700 NK |
201 | int ret = 0; |
202 | ||
15e2e619 CK |
203 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
204 | ||
1245b700 NK |
205 | /* first we call set_params for the platform driver |
206 | * this should configure the soc side | |
207 | * if the machine has compressed ops then we call that as well | |
208 | * expectation is that platform and machine will configure everything | |
209 | * for this compress path, like configuring pcm port for codec | |
210 | */ | |
211 | if (platform->driver->compr_ops && platform->driver->compr_ops->set_params) { | |
212 | ret = platform->driver->compr_ops->set_params(cstream, params); | |
213 | if (ret < 0) | |
15e2e619 | 214 | goto out; |
1245b700 NK |
215 | } |
216 | ||
217 | if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->set_params) { | |
218 | ret = rtd->dai_link->compr_ops->set_params(cstream); | |
219 | if (ret < 0) | |
15e2e619 | 220 | goto out; |
1245b700 NK |
221 | } |
222 | ||
223 | snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK, | |
224 | SND_SOC_DAPM_STREAM_START); | |
225 | ||
15e2e619 CK |
226 | out: |
227 | mutex_unlock(&rtd->pcm_mutex); | |
1245b700 NK |
228 | return ret; |
229 | } | |
230 | ||
231 | static int soc_compr_get_params(struct snd_compr_stream *cstream, | |
232 | struct snd_codec *params) | |
233 | { | |
234 | struct snd_soc_pcm_runtime *rtd = cstream->private_data; | |
235 | struct snd_soc_platform *platform = rtd->platform; | |
236 | int ret = 0; | |
237 | ||
15e2e619 CK |
238 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
239 | ||
1245b700 NK |
240 | if (platform->driver->compr_ops && platform->driver->compr_ops->get_params) |
241 | ret = platform->driver->compr_ops->get_params(cstream, params); | |
242 | ||
15e2e619 | 243 | mutex_unlock(&rtd->pcm_mutex); |
1245b700 NK |
244 | return ret; |
245 | } | |
246 | ||
247 | static int soc_compr_get_caps(struct snd_compr_stream *cstream, | |
248 | struct snd_compr_caps *caps) | |
249 | { | |
250 | struct snd_soc_pcm_runtime *rtd = cstream->private_data; | |
251 | struct snd_soc_platform *platform = rtd->platform; | |
252 | int ret = 0; | |
253 | ||
15e2e619 CK |
254 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
255 | ||
1245b700 NK |
256 | if (platform->driver->compr_ops && platform->driver->compr_ops->get_caps) |
257 | ret = platform->driver->compr_ops->get_caps(cstream, caps); | |
258 | ||
15e2e619 | 259 | mutex_unlock(&rtd->pcm_mutex); |
1245b700 NK |
260 | return ret; |
261 | } | |
262 | ||
263 | static int soc_compr_get_codec_caps(struct snd_compr_stream *cstream, | |
264 | struct snd_compr_codec_caps *codec) | |
265 | { | |
266 | struct snd_soc_pcm_runtime *rtd = cstream->private_data; | |
267 | struct snd_soc_platform *platform = rtd->platform; | |
268 | int ret = 0; | |
269 | ||
15e2e619 CK |
270 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
271 | ||
1245b700 NK |
272 | if (platform->driver->compr_ops && platform->driver->compr_ops->get_codec_caps) |
273 | ret = platform->driver->compr_ops->get_codec_caps(cstream, codec); | |
274 | ||
15e2e619 | 275 | mutex_unlock(&rtd->pcm_mutex); |
1245b700 NK |
276 | return ret; |
277 | } | |
278 | ||
279 | static int soc_compr_ack(struct snd_compr_stream *cstream, size_t bytes) | |
280 | { | |
281 | struct snd_soc_pcm_runtime *rtd = cstream->private_data; | |
282 | struct snd_soc_platform *platform = rtd->platform; | |
283 | int ret = 0; | |
284 | ||
15e2e619 CK |
285 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
286 | ||
1245b700 NK |
287 | if (platform->driver->compr_ops && platform->driver->compr_ops->ack) |
288 | ret = platform->driver->compr_ops->ack(cstream, bytes); | |
289 | ||
15e2e619 | 290 | mutex_unlock(&rtd->pcm_mutex); |
1245b700 NK |
291 | return ret; |
292 | } | |
293 | ||
294 | static int soc_compr_pointer(struct snd_compr_stream *cstream, | |
295 | struct snd_compr_tstamp *tstamp) | |
296 | { | |
297 | struct snd_soc_pcm_runtime *rtd = cstream->private_data; | |
298 | struct snd_soc_platform *platform = rtd->platform; | |
299 | ||
15e2e619 CK |
300 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
301 | ||
1245b700 NK |
302 | if (platform->driver->compr_ops && platform->driver->compr_ops->pointer) |
303 | platform->driver->compr_ops->pointer(cstream, tstamp); | |
304 | ||
15e2e619 | 305 | mutex_unlock(&rtd->pcm_mutex); |
1245b700 NK |
306 | return 0; |
307 | } | |
308 | ||
1f88eb0f CK |
309 | static int soc_compr_copy(struct snd_compr_stream *cstream, |
310 | const char __user *buf, size_t count) | |
311 | { | |
312 | struct snd_soc_pcm_runtime *rtd = cstream->private_data; | |
313 | struct snd_soc_platform *platform = rtd->platform; | |
314 | int ret = 0; | |
315 | ||
316 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); | |
317 | ||
318 | if (platform->driver->compr_ops && platform->driver->compr_ops->copy) | |
319 | ret = platform->driver->compr_ops->copy(cstream, buf, count); | |
320 | ||
321 | mutex_unlock(&rtd->pcm_mutex); | |
322 | return ret; | |
323 | } | |
324 | ||
1245b700 NK |
325 | /* ASoC Compress operations */ |
326 | static struct snd_compr_ops soc_compr_ops = { | |
327 | .open = soc_compr_open, | |
328 | .free = soc_compr_free, | |
329 | .set_params = soc_compr_set_params, | |
330 | .get_params = soc_compr_get_params, | |
331 | .trigger = soc_compr_trigger, | |
332 | .pointer = soc_compr_pointer, | |
333 | .ack = soc_compr_ack, | |
334 | .get_caps = soc_compr_get_caps, | |
335 | .get_codec_caps = soc_compr_get_codec_caps | |
336 | }; | |
337 | ||
338 | /* create a new compress */ | |
339 | int soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num) | |
340 | { | |
341 | struct snd_soc_codec *codec = rtd->codec; | |
1f88eb0f | 342 | struct snd_soc_platform *platform = rtd->platform; |
1245b700 NK |
343 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
344 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
345 | struct snd_compr *compr; | |
346 | char new_name[64]; | |
347 | int ret = 0, direction = 0; | |
348 | ||
349 | /* check client and interface hw capabilities */ | |
350 | snprintf(new_name, sizeof(new_name), "%s %s-%d", | |
351 | rtd->dai_link->stream_name, codec_dai->name, num); | |
352 | direction = SND_COMPRESS_PLAYBACK; | |
353 | compr = kzalloc(sizeof(*compr), GFP_KERNEL); | |
354 | if (compr == NULL) { | |
355 | snd_printk(KERN_ERR "Cannot allocate compr\n"); | |
356 | return -ENOMEM; | |
357 | } | |
358 | ||
1f88eb0f CK |
359 | compr->ops = devm_kzalloc(rtd->card->dev, sizeof(soc_compr_ops), |
360 | GFP_KERNEL); | |
361 | if (compr->ops == NULL) { | |
362 | dev_err(rtd->card->dev, "Cannot allocate compressed ops\n"); | |
363 | ret = -ENOMEM; | |
364 | goto compr_err; | |
365 | } | |
366 | memcpy(compr->ops, &soc_compr_ops, sizeof(soc_compr_ops)); | |
367 | ||
368 | /* Add copy callback for not memory mapped DSPs */ | |
369 | if (platform->driver->compr_ops && platform->driver->compr_ops->copy) | |
370 | compr->ops->copy = soc_compr_copy; | |
371 | ||
1245b700 NK |
372 | mutex_init(&compr->lock); |
373 | ret = snd_compress_new(rtd->card->snd_card, num, direction, compr); | |
374 | if (ret < 0) { | |
375 | pr_err("compress asoc: can't create compress for codec %s\n", | |
376 | codec->name); | |
1f88eb0f | 377 | goto compr_err; |
1245b700 NK |
378 | } |
379 | ||
202c8f70 CK |
380 | /* DAPM dai link stream work */ |
381 | INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work); | |
382 | ||
1245b700 NK |
383 | rtd->compr = compr; |
384 | compr->private_data = rtd; | |
385 | ||
386 | printk(KERN_INFO "compress asoc: %s <-> %s mapping ok\n", codec_dai->name, | |
387 | cpu_dai->name); | |
388 | return ret; | |
1f88eb0f CK |
389 | |
390 | compr_err: | |
391 | kfree(compr); | |
392 | return ret; | |
1245b700 | 393 | } |