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authorAlberto Panizzo <maramaopercheseimorto@gmail.com>2011-01-12 08:16:19 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2011-03-21 20:32:13 -0300
commit48a3c77338d725d4976fa792d822eb940ce5c296 (patch)
tree908ff25858dbed62cb546139463507d471b5e609 /drivers/media/video/soc_mediabus.c
parent7fdbd85bce033e2d0f74e5d326ab43906653cb81 (diff)
[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: Alberto Panizzo <maramaopercheseimorto@gmail.com> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/soc_mediabus.c')
-rw-r--r--drivers/media/video/soc_mediabus.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/media/video/soc_mediabus.c b/drivers/media/video/soc_mediabus.c
index 91391214c68..73b4138709e 100644
--- a/drivers/media/video/soc_mediabus.c
+++ b/drivers/media/video/soc_mediabus.c
@@ -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) {