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SubjectRe: [PATCH v2 12/15] drm/mediatek: add callback function to return RDMA layer number
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Hi, Stu:

On Fri, 2018-08-03 at 11:11 +0800, Stu Hsieh wrote:
> This patch add callback function to return RDMA layer number
>
> Signed-off-by: Stu Hsieh <stu.hsieh@mediatek.com>
> ---
> drivers/gpu/drm/mediatek/mtk_disp_rdma.c | 10 ++++++++++
> 1 file changed, 10 insertions(+)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_disp_rdma.c b/drivers/gpu/drm/mediatek/mtk_disp_rdma.c
> index b728f0f42611..8c145a87c9e5 100644
> --- a/drivers/gpu/drm/mediatek/mtk_disp_rdma.c
> +++ b/drivers/gpu/drm/mediatek/mtk_disp_rdma.c
> @@ -60,6 +60,7 @@
>
> struct mtk_disp_rdma_data {
> unsigned int fifo_size;
> + unsigned int layer_nr;
> };
>
> /**
> @@ -194,6 +195,13 @@ static unsigned int rdma_fmt_convert(struct mtk_disp_rdma *rdma,
> }
> }
>
> +static unsigned int mtk_rdma_layer_nr(struct mtk_ddp_comp *comp)
> +{
> + struct mtk_disp_rdma *rdma = comp_to_rdma(comp);
> +
> + return rdma->data->layer_nr;

Maybe RDMA always has one layer, so you could just return 1 here.

Regards,
CK

> +}
> +
> static void mtk_rdma_layer_config(struct mtk_ddp_comp *comp, unsigned int idx,
> struct mtk_plane_state *state)
> {
> @@ -227,6 +235,7 @@ static const struct mtk_ddp_comp_funcs mtk_disp_rdma_funcs = {
> .stop = mtk_rdma_stop,
> .enable_vblank = mtk_rdma_enable_vblank,
> .disable_vblank = mtk_rdma_disable_vblank,
> + .layer_nr = mtk_rdma_layer_nr,
> .layer_config = mtk_rdma_layer_config,
> };
>
> @@ -329,6 +338,7 @@ static const struct mtk_disp_rdma_data mt2701_rdma_driver_data = {
>
> static const struct mtk_disp_rdma_data mt8173_rdma_driver_data = {
> .fifo_size = SZ_8K,
> + .layer_nr = 1,
> };
>
> static const struct of_device_id mtk_disp_rdma_driver_dt_match[] = {


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