Re: [PATCH 1/2] Return from mtk_ovl_layer_config after mtk_ovl_layer_off

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Hi, Mark:

On Wed, 2019-12-11 at 10:49 -0500, Mark Yacoub wrote:
> drm/mediatek: return if plane pending state is disabled.
> 
> If the plane pending state is disabled, call mtk_ovl_layer_off then
> return.
> This guarantees that that the state is valid for all operations when the
> pending state is enabled.

For this series, applied to mediatek-drm-next-5.6 [1], thanks.

[1]
https://github.com/ckhu-mediatek/linux.git-tags/commits/mediatek-drm-next-5.6

Regards,
CK

> 
> Suggested-by: Sean Paul <seanpaul@xxxxxxxxxxxx>
> To: CK Hu <ck.hu@xxxxxxxxxxxx>
> To: dri-devel@xxxxxxxxxxxxxxxxxxxxx
> Cc: Daniele Castagna <dcastagna@xxxxxxxxxxxx>
> Cc: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx>
> Cc: David Airlie <airlied@xxxxxxxx>
> Cc: Daniel Vetter <daniel@xxxxxxxx>
> Cc: Matthias Brugger <matthias.bgg@xxxxxxxxx>
> Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
> Cc: linux-mediatek@xxxxxxxxxxxxxxxxxxx
> Signed-off-by: Mark Yacoub <markyacoub@xxxxxxxxxx>
> ---
>  drivers/gpu/drm/mediatek/mtk_disp_ovl.c | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
> index 4a55bb6e2213..526b595eeff9 100644
> --- a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
> +++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
> @@ -260,8 +260,10 @@ static void mtk_ovl_layer_config(struct mtk_ddp_comp *comp, unsigned int idx,
>  	unsigned int src_size = (pending->height << 16) | pending->width;
>  	unsigned int con;
>  
> -	if (!pending->enable)
> +	if (!pending->enable) {
>  		mtk_ovl_layer_off(comp, idx);
> +		return;
> +	}
>  
>  	con = ovl_fmt_convert(ovl, fmt);
>  	if (idx != 0)
> @@ -283,8 +285,7 @@ static void mtk_ovl_layer_config(struct mtk_ddp_comp *comp, unsigned int idx,
>  	writel_relaxed(offset, comp->regs + DISP_REG_OVL_OFFSET(idx));
>  	writel_relaxed(addr, comp->regs + DISP_REG_OVL_ADDR(ovl, idx));
>  
> -	if (pending->enable)
> -		mtk_ovl_layer_on(comp, idx);
> +	mtk_ovl_layer_on(comp, idx);
>  }
>  
>  static void mtk_ovl_bgclr_in_on(struct mtk_ddp_comp *comp)

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