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media: vsp1: Add premultiplied alpha support

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To support DRM blend mode in R-Car DU driver, we must be able to pass
a plane with the premultiplied alpha. Adding a new property to
vsp1_du_atomic_config allows the R-Car DU driver to pass the
premultiplied alpha plane.

Signed-off-by: Takanari Hayama <taki@igel.co.jp>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab@kernel.org>
This commit is contained in:
Takanari Hayama 2022-08-10 17:37:09 +09:00 committed by Laurent Pinchart
parent 8284bae723
commit 0efb6fd366
2 changed files with 4 additions and 0 deletions
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2
drivers/media/platform/renesas/vsp1/vsp1_drm.c
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@ -856,6 +856,8 @@ int vsp1_du_atomic_update(struct device *dev, unsigned int pipe_index,
rpf->mem.addr[1] = cfg->mem[1];
rpf->mem.addr[2] = cfg->mem[2];
rpf->format.flags = cfg->premult ? V4L2_PIX_FMT_FLAG_PREMUL_ALPHA : 0;
vsp1->drm->inputs[rpf_index].crop = cfg->src;
vsp1->drm->inputs[rpf_index].compose = cfg->dst;
vsp1->drm->inputs[rpf_index].zpos = cfg->zpos;

2
include/media/vsp1.h
View File

@ -51,6 +51,7 @@ int vsp1_du_setup_lif(struct device *dev, unsigned int pipe_index,
* @dst: destination rectangle on the display (integer coordinates)
* @alpha: alpha value (0: fully transparent, 255: fully opaque)
* @zpos: Z position of the plane (from 0 to number of planes minus 1)
* @premult: true for premultiplied alpha
*/
struct vsp1_du_atomic_config {
u32 pixelformat;
@ -60,6 +61,7 @@ struct vsp1_du_atomic_config {
struct v4l2_rect dst;
unsigned int alpha;
unsigned int zpos;
bool premult;
};
/**