Commit 1a01e192 authored by Laurentiu Mihalcea's avatar Laurentiu Mihalcea Committed by Mark Brown

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

Added a new copy function used to copy data to user buffer
in the case of compress capture.
Reviewed-by: default avatarPaul Olaru <paul.olaru@nxp.com>
Reviewed-by: default avatarDaniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: default avatarLaurentiu Mihalcea <laurentiu.mihalcea@nxp.com>
Link: https://lore.kernel.org/r/20220822101502.17644-3-laurentiu.mihalcea@nxp.comSigned-off-by: default avatarMark Brown <broonie@kernel.org>
parent 272ff882
......@@ -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,
......
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