drm/rockchip: vop: fix NV12 video display error
authorMark yao <mark.yao@rock-chips.com>
Mon, 31 Jul 2017 09:49:46 +0000 (17:49 +0800)
committerMark Yao <mark.yao@rock-chips.com>
Fri, 4 Aug 2017 08:09:39 +0000 (16:09 +0800)
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
drivers/gpu/drm/rockchip/rockchip_drm_vop.h

index af1091f51a80958475f03f735c114f04458844a9..56bbd2e2a8efb95b7ae45ef985175add37abf3a0 100644 (file)
@@ -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);
 }