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| author | Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> | 2014-05-27 20:35:36 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2014-07-17 12:44:59 -0300 |
| commit | 9aca813e1401dcafe1c0a9d3b03795e254571504 (patch) | |
| tree | acdd9161df8694242b46e2fd9352f1edee8966b6 /drivers/media | |
| parent | 6418b4d6e1f1d70199a93eeeed948be2229b9c1a (diff) | |
| download | blackbird-obmc-linux-9aca813e1401dcafe1c0a9d3b03795e254571504.tar.gz blackbird-obmc-linux-9aca813e1401dcafe1c0a9d3b03795e254571504.zip | |
[media] v4l: vsp1: bru: Support non-premultiplied colors at the BRU output
The BRU outputs premultiplied colors, enable color data normalization
when the format configured at the output of the pipeline isn't
premultiplied.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/platform/vsp1/vsp1_bru.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/media/platform/vsp1/vsp1_bru.c b/drivers/media/platform/vsp1/vsp1_bru.c index d8d49fb7f5ff..86b32bca408d 100644 --- a/drivers/media/platform/vsp1/vsp1_bru.c +++ b/drivers/media/platform/vsp1/vsp1_bru.c @@ -43,8 +43,10 @@ static inline void vsp1_bru_write(struct vsp1_bru *bru, u32 reg, u32 data) static int bru_s_stream(struct v4l2_subdev *subdev, int enable) { + struct vsp1_pipeline *pipe = to_vsp1_pipeline(&subdev->entity); struct vsp1_bru *bru = to_bru(subdev); struct v4l2_mbus_framefmt *format; + unsigned int flags; unsigned int i; if (!enable) @@ -58,8 +60,13 @@ static int bru_s_stream(struct v4l2_subdev *subdev, int enable) * to sane default values for now. */ - /* Disable both color data normalization and dithering. */ - vsp1_bru_write(bru, VI6_BRU_INCTRL, 0); + /* Disable dithering and enable color data normalization unless the + * format at the pipeline output is premultiplied. + */ + flags = pipe->output ? pipe->output->video.format.flags : 0; + vsp1_bru_write(bru, VI6_BRU_INCTRL, + flags & V4L2_PIX_FMT_FLAG_PREMUL_ALPHA ? + 0 : VI6_BRU_INCTRL_NRM); /* Set the background position to cover the whole output image and * set its color to opaque black. |
