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Date:   Thu, 16 May 2019 12:31:46 +0200
From:   Maxime Ripard <>
To:     Daniel Vetter <>,
        David Airlie <>,
        Maarten Lankhorst <>,
        Sean Paul <>,
        Maxime Ripard <>
        Philipp Zabel <>
Subject: [PATCH v3 1/7] drm/rockchip: Change the scl_vop_cal_scl_fac to pass drm_format_info

The Rockchip VOP driver has a function, scl_vop_cal_scl_fac, that will
lookup the drm_format_info structure from the fourcc passed to it by its

However, its only caller already derefences the drm_format_info structure
it has access to to retrieve that fourcc. Change the prototype of that
function to pass the drm_format_info structure directly, removing the need
for an extra lookup.

Suggested-by: Philipp Zabel <>
Signed-off-by: Maxime Ripard <>
 drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
index 20a9c296d027..9c0d6b367709 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
@@ -315,14 +315,13 @@ static uint16_t scl_vop_cal_scale(enum scale_mode mode, uint32_t src,
 static void scl_vop_cal_scl_fac(struct vop *vop, const struct vop_win_data *win,
 			     uint32_t src_w, uint32_t src_h, uint32_t dst_w,
-			     uint32_t dst_h, uint32_t pixel_format)
+			     uint32_t dst_h, const struct drm_format_info *info)
 	uint16_t yrgb_hor_scl_mode, yrgb_ver_scl_mode;
 	uint16_t cbcr_hor_scl_mode = SCALE_NONE;
 	uint16_t cbcr_ver_scl_mode = SCALE_NONE;
-	int hsub = drm_format_horz_chroma_subsampling(pixel_format);
-	int vsub = drm_format_vert_chroma_subsampling(pixel_format);
-	const struct drm_format_info *info;
+	int hsub = drm_format_horz_chroma_subsampling(info->format);
+	int vsub = drm_format_vert_chroma_subsampling(info->format);
 	bool is_yuv = false;
 	uint16_t cbcr_src_w = src_w / hsub;
 	uint16_t cbcr_src_h = src_h / vsub;
@@ -331,8 +330,6 @@ static void scl_vop_cal_scl_fac(struct vop *vop, const struct vop_win_data *win,
 	uint32_t val;
 	int vskiplines;
-	info = drm_format_info(pixel_format);
 	if (info->is_yuv)
 		is_yuv = true;
@@ -856,7 +853,7 @@ static void vop_plane_atomic_update(struct drm_plane *plane,
 	if (win->phy->scl)
 		scl_vop_cal_scl_fac(vop, win, actual_w, actual_h,
 				    drm_rect_width(dest), drm_rect_height(dest),
-				    fb->format->format);
+				    fb->format);
 	VOP_WIN_SET(vop, win, act_info, act_info);
 	VOP_WIN_SET(vop, win, dsp_info, dsp_info);

base-commit: a802303934b3bd4df6e2fc8bf2e4ebced1c37556
git-series 0.9.1

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