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ASoC: rockchip: vad: add snd_pcm_vad_memcpy

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Change-Id: I43c7e317f94e08aee0d55da1400493f510ff6e77
Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com>
This commit is contained in:
Sugar Zhang 2018-08-23 17:11:58 +08:00 committed by Tao Huang
parent f6af151bc0
commit 31ed99d1b4
2 changed files with 70 additions and 0 deletions
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10
include/sound/pcm.h
View File

@ -1418,6 +1418,16 @@ snd_pcm_uframes_t snd_pcm_vad_avail(struct snd_pcm_substream *substream);
bool snd_pcm_vad_attached(struct snd_pcm_substream *substream);
int snd_pcm_vad_preprocess(struct snd_pcm_substream *substream,
void *buf, snd_pcm_uframes_t size);
/**
* snd_pcm_vad_memcpy - Copy vad data to dst
* @substream: PCM substream instance
* @buf: dst buf
* @frames: size in frame
*
* Result is copied frames for success or errno for fail
*/
snd_pcm_sframes_t snd_pcm_vad_memcpy(struct snd_pcm_substream *substream,
void *buf, snd_pcm_uframes_t frames);
#endif
/* printk helpers */

60
sound/soc/rockchip/rockchip_vad.c
View File

@ -315,6 +315,66 @@ bool snd_pcm_vad_attached(struct snd_pcm_substream *substream)
}
EXPORT_SYMBOL(snd_pcm_vad_attached);
/**
* snd_pcm_vad_memcpy - Copy vad data to dst
* @substream: PCM substream instance
* @buf: dst buf
* @frames: size in frame
*
* Result is copied frames for success or errno for fail
*/
snd_pcm_sframes_t snd_pcm_vad_memcpy(struct snd_pcm_substream *substream,
void *buf, snd_pcm_uframes_t frames)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct rockchip_vad *vad = NULL;
struct vad_buf *vbuf;
snd_pcm_uframes_t avail;
int bytes;
vad = substream_get_drvdata(substream);
if (!vad)
return -EFAULT;
vbuf = &vad->vbuf;
avail = snd_pcm_vad_avail(substream);
avail = avail > frames ? frames : avail;
bytes = frames_to_bytes(runtime, avail);
if (bytes <= 0)
return -EFAULT;
dev_dbg(vad->dev,
"begin: %p, pos: %p, end: %p, size: %d, bytes: %d\n",
vbuf->begin, vbuf->pos, vbuf->end, vbuf->size, bytes);
if (!vbuf->loop) {
memcpy_fromio(buf, vbuf->pos, bytes);
vbuf->pos += bytes;
} else {
if ((vbuf->pos + bytes) <= vbuf->end) {
memcpy_fromio(buf, vbuf->pos, bytes);
vbuf->pos += bytes;
} else {
int part1 = vbuf->end - vbuf->pos;
int part2 = bytes - part1;
memcpy_fromio(buf, vbuf->pos, part1);
memcpy_fromio(buf + part1, vbuf->begin, part2);
vbuf->pos = vbuf->begin + part2;
}
}
vbuf->size -= bytes;
dev_dbg(vad->dev,
"begin: %p, pos: %p, end: %p, size: %d, bytes: %d\n",
vbuf->begin, vbuf->pos, vbuf->end, vbuf->size, bytes);
return avail;
}
EXPORT_SYMBOL(snd_pcm_vad_memcpy);
static bool rockchip_vad_writeable_reg(struct device *dev, unsigned int reg)
{
return true;