Re: [PATCH 3/3] drm/mediatek: drm_ddp_comp: Add mtk_ddp_is_simple_comp() internal helper

From: CK Hu (胡俊光)
Date: Fri Mar 22 2024 - 04:58:26 EST


Hi, Angelo:

On Thu, 2024-02-01 at 13:53 +0100, AngeloGioacchino Del Regno wrote:
> Move the simple component check to a new mtk_ddp_is_simple_comp()
> internal helper to reduce code duplication.

Reviewed-by: CK Hu <ck.hu@xxxxxxxxxxxx>

>
> Signed-off-by: AngeloGioacchino Del Regno <
> angelogioacchino.delregno@xxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c | 57 +++++++++++------
> ----
> 1 file changed, 31 insertions(+), 26 deletions(-)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
> b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
> index 539b526a6b0a..4ca2a02ada3c 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
> @@ -575,6 +575,29 @@ unsigned int
> mtk_drm_find_possible_crtc_by_comp(struct drm_device *drm,
> return ret;
> }
>
> +static bool mtk_ddp_is_simple_comp(enum mtk_ddp_comp_type type)
> +{
> + switch (type) {
> + case MTK_DISP_AAL:
> + case MTK_DISP_BLS:
> + case MTK_DISP_CCORR:
> + case MTK_DISP_COLOR:
> + case MTK_DISP_GAMMA:
> + case MTK_DISP_MERGE:
> + case MTK_DISP_OVL:
> + case MTK_DISP_OVL_2L:
> + case MTK_DISP_OVL_ADAPTOR:
> + case MTK_DISP_PWM:
> + case MTK_DISP_RDMA:
> + case MTK_DP_INTF:
> + case MTK_DPI:
> + case MTK_DSI:
> + return false;
> + default:
> + return true;
> + }
> +}
> +
> int mtk_ddp_comp_init(struct device_node *node, struct mtk_ddp_comp
> *comp,
> unsigned int comp_id)
> {
> @@ -605,19 +628,13 @@ int mtk_ddp_comp_init(struct device_node *node,
> struct mtk_ddp_comp *comp,
> }
> comp->dev = &comp_pdev->dev;
>
> - if (type == MTK_DISP_AAL ||
> - type == MTK_DISP_BLS ||
> - type == MTK_DISP_CCORR ||
> - type == MTK_DISP_COLOR ||
> - type == MTK_DISP_GAMMA ||
> - type == MTK_DISP_MERGE ||
> - type == MTK_DISP_OVL ||
> - type == MTK_DISP_OVL_2L ||
> - type == MTK_DISP_PWM ||
> - type == MTK_DISP_RDMA ||
> - type == MTK_DPI ||
> - type == MTK_DP_INTF ||
> - type == MTK_DSI)
> + /*
> + * Resources for simple components are retrieved here as those
> are
> + * managed in here without the need of more complex drivers;
> for
> + * the latter, their respective probe function will do the job,
> so
> + * we must avoid getting their resources here.
> + */
> + if (!mtk_ddp_is_simple_comp(type))
> return 0;
>
> priv = devm_kzalloc(comp->dev, sizeof(*priv), GFP_KERNEL);
> @@ -651,19 +668,7 @@ void mtk_ddp_comp_destroy(struct mtk_ddp_comp
> *comp)
> return;
>
> /* Complex components are destroyed with their own remove
> callback */
> - if (type == MTK_DISP_AAL ||
> - type == MTK_DISP_BLS ||
> - type == MTK_DISP_CCORR ||
> - type == MTK_DISP_COLOR ||
> - type == MTK_DISP_GAMMA ||
> - type == MTK_DISP_MERGE ||
> - type == MTK_DISP_OVL ||
> - type == MTK_DISP_OVL_2L ||
> - type == MTK_DISP_PWM ||
> - type == MTK_DISP_RDMA ||
> - type == MTK_DPI ||
> - type == MTK_DP_INTF ||
> - type == MTK_DSI)
> + if (!mtk_ddp_is_simple_comp(mtk_ddp_matches[comp->id].type))
> return;
>
> priv = dev_get_drvdata(comp->dev);