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ASoC: SOF: compress: Add copy function for capture case

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Added a new copy function used to copy data to user buffer
in the case of compress capture.

Reviewed-by: Paul Olaru <paul.olaru@nxp.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Laurentiu Mihalcea <laurentiu.mihalcea@nxp.com>
Link: https://lore.kernel.org/r/20220822101502.17644-3-laurentiu.mihalcea@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Laurentiu Mihalcea 2022-08-22 13:15:02 +03:00 committed by Mark Brown
parent 272ff8828f
commit 1a01e19278
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GPG Key ID: 24D68B725D5487D0
1 changed files with 25 additions and 1 deletions
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26
sound/soc/sof/compress.c
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@ -318,6 +318,27 @@ static int sof_compr_copy_playback(struct snd_compr_runtime *rtd,
return count - ret;
}
static int sof_compr_copy_capture(struct snd_compr_runtime *rtd,
char __user *buf, size_t count)
{
void *ptr;
unsigned int offset, n;
int ret;
div_u64_rem(rtd->total_bytes_transferred, rtd->buffer_size, &offset);
ptr = rtd->dma_area + offset;
n = rtd->buffer_size - offset;
if (count < n) {
ret = copy_to_user(buf, ptr, count);
} else {
ret = copy_to_user(buf, ptr, n);
ret += copy_to_user(buf + n, rtd->dma_area, count - n);
}
return count - ret;
}
static int sof_compr_copy(struct snd_soc_component *component,
struct snd_compr_stream *cstream,
char __user *buf, size_t count)
@ -327,7 +348,10 @@ static int sof_compr_copy(struct snd_soc_component *component,
if (count > rtd->buffer_size)
count = rtd->buffer_size;
return sof_compr_copy_playback(rtd, buf, count);
if (cstream->direction == SND_COMPRESS_PLAYBACK)
return sof_compr_copy_playback(rtd, buf, count);
else
return sof_compr_copy_capture(rtd, buf, count);
}
static int sof_compr_pointer(struct snd_soc_component *component,