RE: [PATCH 3/8] drm/exynos: fixed vflip, hflip case at the same time.

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> -----Original Message-----
> From: Eunchul Kim [mailto:chulspro.kim@xxxxxxxxxxx]
> Sent: Thursday, December 20, 2012 6:32 PM
> To: dri-devel@xxxxxxxxxxxxxxxxxxxxx; inki.dae@xxxxxxxxxxx
> Cc: jy0.jeon@xxxxxxxxxxx; yj44.cho@xxxxxxxxxxx; jmock.shin@xxxxxxxxxxx;
> jaejoon.seo@xxxxxxxxxxx; kyungmin.park@xxxxxxxxxxx;
> jy0922.shim@xxxxxxxxxxx; sw0312.kim@xxxxxxxxxxx; th908.kim@xxxxxxxxxxx;
> lsmin.lee@xxxxxxxxxxx; chulspro.kim@xxxxxxxxxxx
> Subject: [PATCH 3/8] drm/exynos: fixed vflip, hflip case at the same time.
> 
> This patch fixed vflip, hflip at the same time. If we want to change 180
> degree about buffer,
> then we can use h,vflip or 180 degree. we supports 180 degree using
> h,vflip.
> but we make error handling in this case. so, fixed it.
> 
> Signed-off-by: Eunchul Kim <chulspro.kim@xxxxxxxxxxx>
> ---
>  drivers/gpu/drm/exynos/exynos_drm_fimc.c    |    1 +
>  drivers/gpu/drm/exynos/exynos_drm_rotator.c |    1 +
>  2 files changed, 2 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimc.c
> b/drivers/gpu/drm/exynos/exynos_drm_fimc.c
> index 5dc0251..4c4078c 100644
> --- a/drivers/gpu/drm/exynos/exynos_drm_fimc.c
> +++ b/drivers/gpu/drm/exynos/exynos_drm_fimc.c
> @@ -1387,6 +1387,7 @@ static inline bool fimc_check_drm_flip(enum
> drm_exynos_flip flip)
>  	case EXYNOS_DRM_FLIP_NONE:
>  	case EXYNOS_DRM_FLIP_VERTICAL:
>  	case EXYNOS_DRM_FLIP_HORIZONTAL:
> +	case EXYNOS_DRM_FLIP_VERTICAL | EXYNOS_DRM_FLIP_HORIZONTAL:

This code induces build warning because the value of 'VERTICAL | HORIZONTAL'
is out of range. Add a new enumeration value to enum drm_exynos_flip. i.e.
EXYNOS_DRM_FLIP_BOTH = EXYNOS_DRM_FLIP_VERTICAL | EXYNOS_DRM_FLIP_HORIZONTAL
and use it.

>  		return true;
>  	default:
>  		DRM_DEBUG_KMS("%s:invalid flip\n", __func__);
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_rotator.c
> b/drivers/gpu/drm/exynos/exynos_drm_rotator.c
> index 17e4474..09830ad 100644
> --- a/drivers/gpu/drm/exynos/exynos_drm_rotator.c
> +++ b/drivers/gpu/drm/exynos/exynos_drm_rotator.c
> @@ -513,6 +513,7 @@ static inline bool rotator_check_drm_flip(enum
> drm_exynos_flip flip)
>  	case EXYNOS_DRM_FLIP_NONE:
>  	case EXYNOS_DRM_FLIP_VERTICAL:
>  	case EXYNOS_DRM_FLIP_HORIZONTAL:
> +	case EXYNOS_DRM_FLIP_VERTICAL | EXYNOS_DRM_FLIP_HORIZONTAL:

Ditto.

>  		return true;
>  	default:
>  		DRM_DEBUG_KMS("%s:invalid flip\n", __func__);
> --
> 1.7.0.4

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