From 907abb8cb26375314cc5f89c0b2dab7141135f67 Mon Sep 17 00:00:00 2001
From: Mark yao <mark.yao@rock-chips.com>
Date: Mon, 31 Jul 2017 17:49:46 +0800
Subject: [PATCH 72/86] drm/rockchip: vop: fix NV12 video display error
Git-commit: 6f04f5925ce763e07cb405d1fbe97a53b6c026a3
Patch-mainline: v4.13-rc5
References: fate#323912
fixup the scale calculation formula on the case
src_height == (dst_height/2).
Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
Reviewed-by: Sandy huang <sandy.huang@rock-chips.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1501494586-6984-1-git-send-email-mark.yao@rock-chips.com
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@suse.com>
---
drivers/gpu/drm/rockchip/rockchip_drm_vop.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.h b/drivers/gpu/drm/rockchip/rockchip_drm_vop.h
index af1091f51a80..56bbd2e2a8ef 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.h
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.h
@@ -299,6 +299,9 @@ static inline uint16_t scl_get_bili_dn_vskip(int src_h, int dst_h,
act_height = (src_h + vskiplines - 1) / vskiplines;
+ if (act_height == dst_h)
+ return GET_SCL_FT_BILI_DN(src_h, dst_h) / vskiplines;
+
return GET_SCL_FT_BILI_DN(act_height, dst_h);
}
--
2.11.0