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


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 272ff882

sound/soc/sof/compress.c

+25 −1
Original line number Diff line number Diff line
@@ -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;



	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,