diff options
| author | Laurentiu Mihalcea <laurentiu.mihalcea@nxp.com> | 2022-08-22 13:15:02 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2022-08-31 12:12:59 +0100 |
| commit | 1a01e19278022cd2f7daa7a065ed47c5022dbad9 (patch) | |
| tree | be192525d8eff4b79ae350ed5d9b75da092504a3 /sound/soc/sof/compress.c | |
| parent | 272ff8828f35658aace17e3227624fbbd68a6bcf (diff) | |
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: 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>
Diffstat (limited to 'sound/soc/sof/compress.c')
| -rw-r--r-- | sound/soc/sof/compress.c | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/sound/soc/sof/compress.c b/sound/soc/sof/compress.c index 2ee81096bec5..8e1a9ba111ad 100644 --- a/sound/soc/sof/compress.c +++ b/sound/soc/sof/compress.c @@ -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, |