linux-kernel - [PATCH 5/6] drm/rockchip: vop: correct the source size of uv scale factor setting

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Message-Id: <1468467207-6715-1-git-send-email-mark.yao@rock-chips.com>
Date:	Thu, 14 Jul 2016 11:33:27 +0800
From:	Mark Yao <mark.yao@...k-chips.com>
To:	David Airlie <airlied@...ux.ie>, Heiko Stuebner <heiko@...ech.de>,
	dri-devel@...ts.freedesktop.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:	Mark Yao <mark.yao@...k-chips.com>, Yakir Yang <ykk@...k-chips.com>
Subject: [PATCH 5/6] drm/rockchip: vop: correct the source size of uv scale factor setting

When the input color format is YUV, we need to do some external scale
for CBCR. Like,
 * In YUV420 data format:
     cbcr_xscale = dst_w / src_w * 2;
     cbcr_yscale = dst_h / src_h * 2;
 * In YUV422 data format:
     cbcr_xscale = dst_w / src_w * 2;
     cbcr_yscale = dst_h / src_h;
 * In YUV444 data format
     cbcr_xscale = dst_w / src_w;
     cbcr_yscale = dst_h / src_h;

Signed-off-by: Yakir Yang <ykk@...k-chips.com>
Signed-off-by: Mark Yao <mark.yao@...k-chips.com>
---
 drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
index e01c435..aad105b 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
@@ -328,9 +328,9 @@ static void scl_vop_cal_scl_fac(struct vop *vop, const struct vop_win_data *win,
 			    scl_cal_scale2(src_h, dst_h));
 		if (is_yuv) {
 			VOP_SCL_SET(vop, win, scale_cbcr_x,
-				    scl_cal_scale2(src_w, dst_w));
+				    scl_cal_scale2(cbcr_src_w, dst_w));
 			VOP_SCL_SET(vop, win, scale_cbcr_y,
-				    scl_cal_scale2(src_h, dst_h));
+				    scl_cal_scale2(cbcr_src_h, dst_h));
 		}
 		return;
 	}
-- 
1.9.1