linux-kernel - [PATCH 2/2] drm/rockchip: vop: correct the source size of uv scale factor setting

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Mon,  6 Jun 2016 15:58:46 +0800
From:	Yakir Yang <ykk@...k-chips.com>
To:	Mark Yao <yzq@...k-chips.com>, Heiko Stuebner <heiko@...ech.de>,
	David Airlie <airlied@...ux.ie>
Cc:	tfiga@...omium.org, dri-devel@...ts.freedesktop.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Mark Yao <mark.yao@...k-chips.com>,
	Yakir Yang <ykk@...k-chips.com>
Subject: [PATCH 2/2] drm/rockchip: vop: correct the source size of uv scale factor setting

From: Mark Yao <mark.yao@...k-chips.com>

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>
---
 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 1c4d5b5..b28cda7 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
@@ -324,9 +324,9 @@ 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