Re: [PATCH] drm/vc4: Reset ->{x,y}_scaling[1] when dealing with uniplanar formats

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On Tue, 24 Jul 2018 15:36:01 +0200
Boris Brezillon <boris.brezillon@xxxxxxxxxxx> wrote:

> This is needed to ensure ->is_unity is correct when the plane was
> previously configured to output a multi-planar format with scaling
> enabled, and is then being reconfigured to output a uniplanar format.
> 
> Fixes: fc04023fafec ("drm/vc4: Add support for YUV planes.")
> Cc: <stable@xxxxxxxxxxxxxxx>
> Signed-off-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxx>

Applied to drm-misc-fixes.

> ---
>  drivers/gpu/drm/vc4/vc4_plane.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/gpu/drm/vc4/vc4_plane.c b/drivers/gpu/drm/vc4/vc4_plane.c
> index 9d7a36f148cf..cfb50fedfa2b 100644
> --- a/drivers/gpu/drm/vc4/vc4_plane.c
> +++ b/drivers/gpu/drm/vc4/vc4_plane.c
> @@ -320,6 +320,9 @@ static int vc4_plane_setup_clipping_and_scaling(struct drm_plane_state *state)
>  			vc4_state->x_scaling[0] = VC4_SCALING_TPZ;
>  		if (vc4_state->y_scaling[0] == VC4_SCALING_NONE)
>  			vc4_state->y_scaling[0] = VC4_SCALING_TPZ;
> +	} else {
> +		vc4_state->x_scaling[1] = VC4_SCALING_NONE;
> +		vc4_state->y_scaling[1] = VC4_SCALING_NONE;
>  	}
>  
>  	vc4_state->is_unity = (vc4_state->x_scaling[0] == VC4_SCALING_NONE &&




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