HI, Yongqiang:
Yongqiang Niu <yongqiang.niu@xxxxxxxxxxxx> 於 2020年8月20日 週四 下午2:06寫道：
>
> enable OVL_LAYER_SMI_ID_EN for multi-layer usecase
>
> Signed-off-by: Yongqiang Niu <yongqiang.niu@xxxxxxxxxxxx>
> ---
> drivers/gpu/drm/mediatek/mtk_disp_ovl.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
> index 8cf9f3b..427fe7f 100644
> --- a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
> +++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
> @@ -23,6 +23,7 @@
> #define DISP_REG_OVL_RST 0x0014
> #define DISP_REG_OVL_ROI_SIZE 0x0020
> #define DISP_REG_OVL_DATAPATH_CON 0x0024
> +#define OVL_LAYER_SMI_ID_EN BIT(0)
> #define OVL_BGCLR_SEL_IN BIT(2)
> #define DISP_REG_OVL_ROI_BGCLR 0x0028
> #define DISP_REG_OVL_SRC_CON 0x002c
> @@ -116,6 +117,8 @@ static void mtk_ovl_disable_vblank(struct mtk_ddp_comp *comp)
> static void mtk_ovl_start(struct mtk_ddp_comp *comp)
> {
> writel_relaxed(0x1, comp->regs + DISP_REG_OVL_EN);
> + mtk_ddp_write_mask(NULL, OVL_LAYER_SMI_ID_EN, comp,
writel_relaxed instead of mtk_ddp_write_mask.
> + DISP_REG_OVL_DATAPATH_CON, OVL_LAYER_SMI_ID_EN);
If this only should set in mt8192, add a private data to distinguish this.
Regards,
Chun-Kuang.
> }
>
> static void mtk_ovl_stop(struct mtk_ddp_comp *comp)
> --
> 1.8.1.1.dirty
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