linux-kernel - [PATCH 3/3] drm/mediatek: drm_ddp_comp: Add mtk_ddp_is_simple

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Message-ID: <20240201125304.218467-4-angelogioacchino.delregno@collabora.com>
Date: Thu,  1 Feb 2024 13:53:04 +0100
From: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
To: chunkuang.hu@...nel.org
Cc: p.zabel@...gutronix.de,
	airlied@...il.com,
	daniel@...ll.ch,
	matthias.bgg@...il.com,
	angelogioacchino.delregno@...labora.com,
	ck.hu@...iatek.com,
	nancy.lin@...iatek.com,
	nathan.lu@...iatek.com,
	dri-devel@...ts.freedesktop.org,
	linux-mediatek@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	kernel@...labora.com,
	wenst@...omium.org
Subject: [PATCH 3/3] drm/mediatek: drm_ddp_comp: Add mtk_ddp_is_simple_comp() internal helper

Move the simple component check to a new mtk_ddp_is_simple_comp()
internal helper to reduce code duplication.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
---
 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);
-- 
2.43.0