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[media] v4l: vsp1: Simplify alpha propagation

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We don't need to walk the pipeline when propagating the alpha value as
all the information needed for propagation is already available from the
pipeline structure.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Laurent Pinchart 2016-06-19 23:19:43 -03:00 committed by Mauro Carvalho Chehab
parent 20fab5e086
commit 07a23c6117
5 changed files with 15 additions and 37 deletions
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40
drivers/media/platform/vsp1/vsp1_pipe.c
View File

@ -301,42 +301,20 @@ void vsp1_pipeline_frame_end(struct vsp1_pipeline *pipe)
* to be scaled, we disable alpha scaling when the UDS input has a fixed alpha
* value. The UDS then outputs a fixed alpha value which needs to be programmed
* from the input RPF alpha.
*
* This function can only be called from a subdev s_stream handler as it
* requires a valid display list context.
*/
void vsp1_pipeline_propagate_alpha(struct vsp1_pipeline *pipe,
struct vsp1_entity *input,
struct vsp1_dl_list *dl,
unsigned int alpha)
struct vsp1_dl_list *dl, unsigned int alpha)
{
struct vsp1_entity *entity;
struct media_pad *pad;
if (!pipe->uds)
return;
pad = media_entity_remote_pad(&input->pads[RWPF_PAD_SOURCE]);
/* The BRU background color has a fixed alpha value set to 255, the
* output alpha value is thus always equal to 255.
*/
if (pipe->uds_input->type == VSP1_ENTITY_BRU)
alpha = 255;
while (pad) {
if (!is_media_entity_v4l2_subdev(pad->entity))
break;
entity = to_vsp1_entity(media_entity_to_v4l2_subdev(pad->entity));
/* The BRU background color has a fixed alpha value set to 255,
* the output alpha value is thus always equal to 255.
*/
if (entity->type == VSP1_ENTITY_BRU)
alpha = 255;
if (entity->type == VSP1_ENTITY_UDS) {
struct vsp1_uds *uds = to_uds(&entity->subdev);
vsp1_uds_set_alpha(uds, dl, alpha);
break;
}
pad = &entity->pads[entity->source_pad];
pad = media_entity_remote_pad(pad);
}
vsp1_uds_set_alpha(pipe->uds, dl, alpha);
}
void vsp1_pipelines_suspend(struct vsp1_device *vsp1)

4
drivers/media/platform/vsp1/vsp1_pipe.h
View File

@ -117,9 +117,7 @@ bool vsp1_pipeline_ready(struct vsp1_pipeline *pipe);
void vsp1_pipeline_frame_end(struct vsp1_pipeline *pipe);
void vsp1_pipeline_propagate_alpha(struct vsp1_pipeline *pipe,
struct vsp1_entity *input,
struct vsp1_dl_list *dl,
unsigned int alpha);
struct vsp1_dl_list *dl, unsigned int alpha);
void vsp1_pipelines_suspend(struct vsp1_device *vsp1);
void vsp1_pipelines_resume(struct vsp1_device *vsp1);

2
drivers/media/platform/vsp1/vsp1_rpf.c
View File

@ -206,7 +206,7 @@ static void rpf_configure(struct vsp1_entity *entity,
vsp1_rpf_write(rpf, dl, VI6_RPF_MULT_ALPHA, mult);
}
vsp1_pipeline_propagate_alpha(pipe, &rpf->entity, dl, rpf->alpha);
vsp1_pipeline_propagate_alpha(pipe, dl, rpf->alpha);
vsp1_rpf_write(rpf, dl, VI6_RPF_MSK_CTRL, 0);
vsp1_rpf_write(rpf, dl, VI6_RPF_CKEY_CTRL, 0);

4
drivers/media/platform/vsp1/vsp1_uds.c
View File

@ -40,9 +40,11 @@ static inline void vsp1_uds_write(struct vsp1_uds *uds, struct vsp1_dl_list *dl,
* Scaling Computation
*/
void vsp1_uds_set_alpha(struct vsp1_uds *uds, struct vsp1_dl_list *dl,
void vsp1_uds_set_alpha(struct vsp1_entity *entity, struct vsp1_dl_list *dl,
unsigned int alpha)
{
struct vsp1_uds *uds = to_uds(&entity->subdev);
vsp1_uds_write(uds, dl, VI6_UDS_ALPVAL,
alpha << VI6_UDS_ALPVAL_VAL0_SHIFT);
}

2
drivers/media/platform/vsp1/vsp1_uds.h
View File

@ -35,7 +35,7 @@ static inline struct vsp1_uds *to_uds(struct v4l2_subdev *subdev)
struct vsp1_uds *vsp1_uds_create(struct vsp1_device *vsp1, unsigned int index);
void vsp1_uds_set_alpha(struct vsp1_uds *uds, struct vsp1_dl_list *dl,
void vsp1_uds_set_alpha(struct vsp1_entity *uds, struct vsp1_dl_list *dl,
unsigned int alpha);
#endif /* __VSP1_UDS_H__ */