Commit | Line | Data |
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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 | ||
124 | snd_soc_dai_digital_mute(codec_dai, 1); | |
125 | ||
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 | ||
182 | if (cmd == SNDRV_PCM_TRIGGER_START) | |
183 | snd_soc_dai_digital_mute(codec_dai, 0); | |
184 | else if (cmd == SNDRV_PCM_TRIGGER_STOP) | |
185 | snd_soc_dai_digital_mute(codec_dai, 1); | |
186 | ||
15e2e619 CK |
187 | out: |
188 | mutex_unlock(&rtd->pcm_mutex); | |
1245b700 NK |
189 | return ret; |
190 | } | |
191 | ||
192 | static int soc_compr_set_params(struct snd_compr_stream *cstream, | |
193 | struct snd_compr_params *params) | |
194 | { | |
195 | struct snd_soc_pcm_runtime *rtd = cstream->private_data; | |
196 | struct snd_soc_platform *platform = rtd->platform; | |
1245b700 NK |
197 | int ret = 0; |
198 | ||
15e2e619 CK |
199 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
200 | ||
1245b700 NK |
201 | /* first we call set_params for the platform driver |
202 | * this should configure the soc side | |
203 | * if the machine has compressed ops then we call that as well | |
204 | * expectation is that platform and machine will configure everything | |
205 | * for this compress path, like configuring pcm port for codec | |
206 | */ | |
207 | if (platform->driver->compr_ops && platform->driver->compr_ops->set_params) { | |
208 | ret = platform->driver->compr_ops->set_params(cstream, params); | |
209 | if (ret < 0) | |
15e2e619 | 210 | goto out; |
1245b700 NK |
211 | } |
212 | ||
213 | if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->set_params) { | |
214 | ret = rtd->dai_link->compr_ops->set_params(cstream); | |
215 | if (ret < 0) | |
15e2e619 | 216 | goto out; |
1245b700 NK |
217 | } |
218 | ||
219 | snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK, | |
220 | SND_SOC_DAPM_STREAM_START); | |
221 | ||
15e2e619 CK |
222 | out: |
223 | mutex_unlock(&rtd->pcm_mutex); | |
1245b700 NK |
224 | return ret; |
225 | } | |
226 | ||
227 | static int soc_compr_get_params(struct snd_compr_stream *cstream, | |
228 | struct snd_codec *params) | |
229 | { | |
230 | struct snd_soc_pcm_runtime *rtd = cstream->private_data; | |
231 | struct snd_soc_platform *platform = rtd->platform; | |
232 | int ret = 0; | |
233 | ||
15e2e619 CK |
234 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
235 | ||
1245b700 NK |
236 | if (platform->driver->compr_ops && platform->driver->compr_ops->get_params) |
237 | ret = platform->driver->compr_ops->get_params(cstream, params); | |
238 | ||
15e2e619 | 239 | mutex_unlock(&rtd->pcm_mutex); |
1245b700 NK |
240 | return ret; |
241 | } | |
242 | ||
243 | static int soc_compr_get_caps(struct snd_compr_stream *cstream, | |
244 | struct snd_compr_caps *caps) | |
245 | { | |
246 | struct snd_soc_pcm_runtime *rtd = cstream->private_data; | |
247 | struct snd_soc_platform *platform = rtd->platform; | |
248 | int ret = 0; | |
249 | ||
15e2e619 CK |
250 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
251 | ||
1245b700 NK |
252 | if (platform->driver->compr_ops && platform->driver->compr_ops->get_caps) |
253 | ret = platform->driver->compr_ops->get_caps(cstream, caps); | |
254 | ||
15e2e619 | 255 | mutex_unlock(&rtd->pcm_mutex); |
1245b700 NK |
256 | return ret; |
257 | } | |
258 | ||
259 | static int soc_compr_get_codec_caps(struct snd_compr_stream *cstream, | |
260 | struct snd_compr_codec_caps *codec) | |
261 | { | |
262 | struct snd_soc_pcm_runtime *rtd = cstream->private_data; | |
263 | struct snd_soc_platform *platform = rtd->platform; | |
264 | int ret = 0; | |
265 | ||
15e2e619 CK |
266 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
267 | ||
1245b700 NK |
268 | if (platform->driver->compr_ops && platform->driver->compr_ops->get_codec_caps) |
269 | ret = platform->driver->compr_ops->get_codec_caps(cstream, codec); | |
270 | ||
15e2e619 | 271 | mutex_unlock(&rtd->pcm_mutex); |
1245b700 NK |
272 | return ret; |
273 | } | |
274 | ||
275 | static int soc_compr_ack(struct snd_compr_stream *cstream, size_t bytes) | |
276 | { | |
277 | struct snd_soc_pcm_runtime *rtd = cstream->private_data; | |
278 | struct snd_soc_platform *platform = rtd->platform; | |
279 | int ret = 0; | |
280 | ||
15e2e619 CK |
281 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
282 | ||
1245b700 NK |
283 | if (platform->driver->compr_ops && platform->driver->compr_ops->ack) |
284 | ret = platform->driver->compr_ops->ack(cstream, bytes); | |
285 | ||
15e2e619 | 286 | mutex_unlock(&rtd->pcm_mutex); |
1245b700 NK |
287 | return ret; |
288 | } | |
289 | ||
290 | static int soc_compr_pointer(struct snd_compr_stream *cstream, | |
291 | struct snd_compr_tstamp *tstamp) | |
292 | { | |
293 | struct snd_soc_pcm_runtime *rtd = cstream->private_data; | |
294 | struct snd_soc_platform *platform = rtd->platform; | |
295 | ||
15e2e619 CK |
296 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
297 | ||
1245b700 NK |
298 | if (platform->driver->compr_ops && platform->driver->compr_ops->pointer) |
299 | platform->driver->compr_ops->pointer(cstream, tstamp); | |
300 | ||
15e2e619 | 301 | mutex_unlock(&rtd->pcm_mutex); |
1245b700 NK |
302 | return 0; |
303 | } | |
304 | ||
305 | /* ASoC Compress operations */ | |
306 | static struct snd_compr_ops soc_compr_ops = { | |
307 | .open = soc_compr_open, | |
308 | .free = soc_compr_free, | |
309 | .set_params = soc_compr_set_params, | |
310 | .get_params = soc_compr_get_params, | |
311 | .trigger = soc_compr_trigger, | |
312 | .pointer = soc_compr_pointer, | |
313 | .ack = soc_compr_ack, | |
314 | .get_caps = soc_compr_get_caps, | |
315 | .get_codec_caps = soc_compr_get_codec_caps | |
316 | }; | |
317 | ||
318 | /* create a new compress */ | |
319 | int soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num) | |
320 | { | |
321 | struct snd_soc_codec *codec = rtd->codec; | |
322 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
323 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
324 | struct snd_compr *compr; | |
325 | char new_name[64]; | |
326 | int ret = 0, direction = 0; | |
327 | ||
328 | /* check client and interface hw capabilities */ | |
329 | snprintf(new_name, sizeof(new_name), "%s %s-%d", | |
330 | rtd->dai_link->stream_name, codec_dai->name, num); | |
331 | direction = SND_COMPRESS_PLAYBACK; | |
332 | compr = kzalloc(sizeof(*compr), GFP_KERNEL); | |
333 | if (compr == NULL) { | |
334 | snd_printk(KERN_ERR "Cannot allocate compr\n"); | |
335 | return -ENOMEM; | |
336 | } | |
337 | ||
338 | compr->ops = &soc_compr_ops; | |
339 | mutex_init(&compr->lock); | |
340 | ret = snd_compress_new(rtd->card->snd_card, num, direction, compr); | |
341 | if (ret < 0) { | |
342 | pr_err("compress asoc: can't create compress for codec %s\n", | |
343 | codec->name); | |
344 | kfree(compr); | |
345 | return ret; | |
346 | } | |
347 | ||
202c8f70 CK |
348 | /* DAPM dai link stream work */ |
349 | INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work); | |
350 | ||
1245b700 NK |
351 | rtd->compr = compr; |
352 | compr->private_data = rtd; | |
353 | ||
354 | printk(KERN_INFO "compress asoc: %s <-> %s mapping ok\n", codec_dai->name, | |
355 | cpu_dai->name); | |
356 | return ret; | |
357 | } |