[PATCH 1/2] soc_mediabus: export a useful method to obtain the number of samples that makes up a pixel format

[Alberto Panizzo]

Signed-off-by: Alberto Panizzo <maramaopercheseimo...@gmail.com>
---
 drivers/media/video/soc_mediabus.c |   14 ++++++++++++++
 include/media/soc_mediabus.h       |    1 +
 2 files changed, 15 insertions(+), 0 deletions(-)

diff --git a/drivers/media/video/soc_mediabus.c 
b/drivers/media/video/soc_mediabus.c
index 9139121..5bba424 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[] = {
        },
 };
 
+s32 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) {
diff --git a/include/media/soc_mediabus.h b/include/media/soc_mediabus.h
index 037cd7b..f21cbd0 100644
--- a/include/media/soc_mediabus.h
+++ b/include/media/soc_mediabus.h
@@ -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);
+s32 soc_mbus_samples_per_pixel(const struct soc_mbus_pixelfmt *mf);
 
 #endif
-- 
1.7.1



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