redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

drm/exynos: add TE handler to support LCD I80 interface 

To support LCD I80 interface, the panel should generate
Tearing Effect synchronization signal between MCU and FB
to display video images.
And the display controller should trigger to transfer
video image at this signal.
So the panel receives the TE IRQ, then calls these handler
chains to notify it to the display controller.

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
hifive-unleashed-5.1
YoungJun Cho 2014-07-17 18:01:19 +09:00 committed by Inki Dae
parent 8e1c06cf65
commit 5595d4d821
3 changed files with 18 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/gpu/drm/exynos/exynos_drm_crtc.c
View File

@ -511,3 +511,11 @@ int exynos_drm_crtc_get_pipe_from_type(struct drm_device *drm_dev,
return -EPERM;
}
void exynos_drm_crtc_te_handler(struct drm_crtc *crtc)
{
struct exynos_drm_manager *manager = to_exynos_crtc(crtc)->manager;
if (manager->ops->te_handler)
manager->ops->te_handler(manager);
}

7
drivers/gpu/drm/exynos/exynos_drm_crtc.h
View File

@ -36,4 +36,11 @@ void exynos_drm_crtc_plane_disable(struct drm_crtc *crtc, int zpos);
int exynos_drm_crtc_get_pipe_from_type(struct drm_device *drm_dev,
unsigned int out_type);
/*
* This function calls the crtc device(manager)'s te_handler() callback
* to trigger to transfer video image at the tearing effect synchronization
* signal.
*/
void exynos_drm_crtc_te_handler(struct drm_crtc *crtc);
#endif

3
drivers/gpu/drm/exynos/exynos_drm_drv.h
View File

@ -186,6 +186,8 @@ struct exynos_drm_display {
* @win_commit: apply hardware specific overlay data to registers.
* @win_enable: enable hardware specific overlay.
* @win_disable: disable hardware specific overlay.
* @te_handler: trigger to transfer video image at the tearing effect
* synchronization signal if there is a page flip request.
*/
struct exynos_drm_manager;
struct exynos_drm_manager_ops {
@ -204,6 +206,7 @@ struct exynos_drm_manager_ops {
void (*win_commit)(struct exynos_drm_manager *mgr, int zpos);
void (*win_enable)(struct exynos_drm_manager *mgr, int zpos);
void (*win_disable)(struct exynos_drm_manager *mgr, int zpos);
void (*te_handler)(struct exynos_drm_manager *mgr);
};
/*