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Commit 48a3c773 authored by Alberto Panizzo's avatar Alberto Panizzo Committed by Mauro Carvalho Chehab
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[media] V4L: soc_mediabus: add a method to obtain the number of samples per pixel 



Add a function to calculate the number of samples on the media-bus,
required to retrieve one pixel of a certain format.

Signed-off-by: default avatarAlberto Panizzo <maramaopercheseimorto@gmail.com>
Signed-off-by: default avatarGuennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 7fdbd85b

drivers/media/video/soc_mediabus.c

+14 −0
Original line number Diff line number Diff line
@@ -132,6 +132,20 @@ static const struct soc_mbus_pixelfmt mbus_fmt[] = { 
	},

};



int soc_mbus_samples_per_pixel(const struct soc_mbus_pixelfmt *mf)

{

	switch (mf->packing) {

	case SOC_MBUS_PACKING_NONE:

	case SOC_MBUS_PACKING_EXTEND16:

		return 1;

	case SOC_MBUS_PACKING_2X8_PADHI:

	case SOC_MBUS_PACKING_2X8_PADLO:

		return 2;

	}

	return -EINVAL;

}

EXPORT_SYMBOL(soc_mbus_samples_per_pixel);



s32 soc_mbus_bytes_per_line(u32 width, const struct soc_mbus_pixelfmt *mf)

{

	switch (mf->packing) {

include/media/soc_mediabus.h

+1 −0
Original line number Diff line number Diff line
@@ -61,5 +61,6 @@ struct soc_mbus_pixelfmt { 
const struct soc_mbus_pixelfmt *soc_mbus_get_fmtdesc(

	enum v4l2_mbus_pixelcode code);

s32 soc_mbus_bytes_per_line(u32 width, const struct soc_mbus_pixelfmt *mf);

int soc_mbus_samples_per_pixel(const struct soc_mbus_pixelfmt *mf);



#endif