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SubjectRe: [PATCH v2 06/25] drm/mediatek: redefine mtk_ddp_sout_sel
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Hi, Yongqiang:

On Wed, 2019-03-27 at 14:19 +0800, yongqiang.niu@mediatek.com wrote:
> From: Yongqiang Niu <yongqiang.niu@mediatek.com>
>
> the format of "mtk_ddp_sout_sel"was not flexible, after we add more
> mediatek SOC support, that will be redundant

It looks like this patch is part of patch 'add mmsys private data for
ddp path config', so I would like you squash this patch into that patch.

Regards,
CK

>
> Signed-off-by: Yongqiang Niu <yongqiang.niu@mediatek.com>
> ---
> drivers/gpu/drm/mediatek/mtk_drm_ddp.c | 28 ++++++++++++++++++----------
> 1 file changed, 18 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
> index 80dc91f..e4dafe0 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
> @@ -391,20 +391,26 @@ static unsigned int mtk_ddp_sel_in(enum mtk_ddp_comp_id cur,
> return value;
> }
>
> -static void mtk_ddp_sout_sel(void __iomem *config_regs,
> - enum mtk_ddp_comp_id cur,
> - enum mtk_ddp_comp_id next)
> +static unsigned int mtk_ddp_sout_sel(enum mtk_ddp_comp_id cur,
> + enum mtk_ddp_comp_id next,
> + unsigned int *addr)
> {
> + unsigned int value;
> +
> if (cur == DDP_COMPONENT_BLS && next == DDP_COMPONENT_DSI0) {
> - writel_relaxed(BLS_TO_DSI_RDMA1_TO_DPI1,
> - config_regs + DISP_REG_CONFIG_OUT_SEL);
> + *addr = DISP_REG_CONFIG_OUT_SEL;
> + value = BLS_TO_DSI_RDMA1_TO_DPI1;
> } else if (cur == DDP_COMPONENT_BLS && next == DDP_COMPONENT_DPI0) {
> - writel_relaxed(BLS_TO_DPI_RDMA1_TO_DSI,
> - config_regs + DISP_REG_CONFIG_OUT_SEL);
> + *addr = DISP_REG_CONFIG_OUT_SEL;
> + value = BLS_TO_DPI_RDMA1_TO_DSI;
> } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI0) {
> - writel_relaxed(DSI_SEL_IN_RDMA,
> - config_regs + DISP_REG_CONFIG_DSI_SEL);
> + *addr = DISP_REG_CONFIG_DSI_SEL;
> + value = DSI_SEL_IN_RDMA;
> + } else {
> + value = 0;
> }
> +
> + return value;
> }
>
> void mtk_ddp_add_comp_to_path(void __iomem *config_regs,
> @@ -419,7 +425,9 @@ void mtk_ddp_add_comp_to_path(void __iomem *config_regs,
> writel_relaxed(reg, config_regs + addr);
> }
>
> - mtk_ddp_sout_sel(config_regs, cur, next);
> + value = mtk_ddp_sout_sel(cur, next, &addr);
> + if (value)
> + writel_relaxed(value, config_regs + addr);
>
> value = mtk_ddp_sel_in(cur, next, &addr);
> if (value) {


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