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drm/rockchip: vop: Init vskiplines in scl_vop_cal_scale()

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Currently we are calling scl_vop_cal_scale() to get vskiplines for yrgb
and cbcr. So the cbcr's vskiplines might be an unexpected value if the
second scl_vop_cal_scale() didn't update it.

Init vskiplines in scl_vop_cal_scale() to avoid that.

Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20180223062250.10470-1-jeffy.chen@rock-chips.com
This commit is contained in:
Jeffy Chen 2018-02-23 14:22:50 +08:00 committed by Heiko Stuebner
parent 7d4e981d41
commit ce91d373d8
1 changed files with 4 additions and 1 deletions
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5
drivers/gpu/drm/rockchip/rockchip_drm_vop.c
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@ -256,6 +256,9 @@ static uint16_t scl_vop_cal_scale(enum scale_mode mode, uint32_t src,
{
uint16_t val = 1 << SCL_FT_DEFAULT_FIXPOINT_SHIFT;
if (vskiplines)
*vskiplines = 0;
if (is_horizontal) {
if (mode == SCALE_UP)
val = GET_SCL_FT_BIC(src, dst);
@ -296,7 +299,7 @@ static void scl_vop_cal_scl_fac(struct vop *vop, const struct vop_win_data *win,
uint16_t vsu_mode;
uint16_t lb_mode;
uint32_t val;
int vskiplines = 0;
int vskiplines;
if (dst_w > 3840) {
DRM_DEV_ERROR(vop->dev, "Maximum dst width (3840) exceeded\n");