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drm: rcar-du: Register a completion callback with VSP1

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Currently we process page flip events on every display interrupt,
however this does not take into consideration the processing time needed
by the VSP1 utilised in the pipeline.

Register a callback with the VSP driver to obtain completion events, and
track them so that we only perform page flips when the full display
pipeline has completed for the frame.

Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
This commit is contained in:
Kieran Bingham 2017-03-04 02:01:19 +00:00
parent d7ade201ae
commit d503a43ac0
3 changed files with 16 additions and 2 deletions
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8
drivers/gpu/drm/rcar-du/rcar_du_crtc.c
View File

@ -378,7 +378,7 @@ static void rcar_du_crtc_update_planes(struct rcar_du_crtc *rcrtc)
* Page Flip
*/
static void rcar_du_crtc_finish_page_flip(struct rcar_du_crtc *rcrtc)
void rcar_du_crtc_finish_page_flip(struct rcar_du_crtc *rcrtc)
{
struct drm_pending_vblank_event *event;
struct drm_device *dev = rcrtc->crtc.dev;
@ -650,6 +650,7 @@ static const struct drm_crtc_funcs crtc_funcs = {
static irqreturn_t rcar_du_crtc_irq(int irq, void *arg)
{
struct rcar_du_crtc *rcrtc = arg;
struct rcar_du_device *rcdu = rcrtc->group->dev;
irqreturn_t ret = IRQ_NONE;
u32 status;
@ -658,7 +659,10 @@ static irqreturn_t rcar_du_crtc_irq(int irq, void *arg)
if (status & DSSR_FRM) {
drm_crtc_handle_vblank(&rcrtc->crtc);
rcar_du_crtc_finish_page_flip(rcrtc);
if (rcdu->info->gen < 3)
rcar_du_crtc_finish_page_flip(rcrtc);
ret = IRQ_HANDLED;
}

1
drivers/gpu/drm/rcar-du/rcar_du_crtc.h
View File

@ -73,5 +73,6 @@ void rcar_du_crtc_resume(struct rcar_du_crtc *rcrtc);
void rcar_du_crtc_route_output(struct drm_crtc *crtc,
enum rcar_du_output output);
void rcar_du_crtc_finish_page_flip(struct rcar_du_crtc *rcrtc);
#endif /* __RCAR_DU_CRTC_H__ */

9
drivers/gpu/drm/rcar-du/rcar_du_vsp.c
View File

@ -28,6 +28,13 @@
#include "rcar_du_kms.h"
#include "rcar_du_vsp.h"
static void rcar_du_vsp_complete(void *private)
{
struct rcar_du_crtc *crtc = private;
rcar_du_crtc_finish_page_flip(crtc);
}
void rcar_du_vsp_enable(struct rcar_du_crtc *crtc)
{
const struct drm_display_mode *mode = &crtc->crtc.state->adjusted_mode;
@ -35,6 +42,8 @@ void rcar_du_vsp_enable(struct rcar_du_crtc *crtc)
struct vsp1_du_lif_config cfg = {
.width = mode->hdisplay,
.height = mode->vdisplay,
.callback = rcar_du_vsp_complete,
.callback_data = crtc,
};
struct rcar_du_plane_state state = {
.state = {