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drm/rockchip: vop2: update vop scale factor

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Change-Id: I2bb22e56de8f2daafb510d8f3eec49928d1fa213
Signed-off-by: Sandy Huang <hjc@rock-chips.com>
This commit is contained in:
Sandy Huang
2020-12-03 15:47:13 +08:00
committed by Tao Huang
parent d5d2966907
commit ee81411850
1 changed files with 31 additions and 4 deletions
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35
drivers/gpu/drm/rockchip/rockchip_drm_vop2.c
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@@ -1062,10 +1062,21 @@ static int vop2_get_cluster_lb_mode(struct vop2_win *win, struct vop2_plane_stat
#define VOP2_BILI_SCL_DN(src, dst) (((src - 1) << 12) / (dst - 1))
#define VOP2_COMMON_SCL(src, dst) (((src - 1) << 16) / (dst - 1))
#define VOP2_BILI_SCL_FAC_CHECK(src, dst, fac) \
(fac * (dst - 1) >> 12 < (src - 1))
#define VOP2_COMMON_SCL_FAC_CHECK(src, dst, fac) \
(fac * (dst - 1) >> 16 < (src - 1))
static uint16_t vop2_scale_factor(enum scale_mode mode,
int32_t filter_mode,
uint32_t src, uint32_t dst)
{
uint32_t fac = 0;
int i = 0;
if (mode == SCALE_NONE)
return 0;
/*
* A workaround to avoid zero div.
*/
@@ -1074,10 +1085,26 @@ static uint16_t vop2_scale_factor(enum scale_mode mode,
src = src + 1;
}
if ((mode == SCALE_DOWN) && (filter_mode == VOP2_SCALE_DOWN_BIL))
return VOP2_BILI_SCL_DN(src, dst);
else
return VOP2_COMMON_SCL(src, dst);
if ((mode == SCALE_DOWN) && (filter_mode == VOP2_SCALE_DOWN_BIL)) {
fac = VOP2_BILI_SCL_DN(src, dst);
for (i = 0; i < 100; i++) {
if (VOP2_BILI_SCL_FAC_CHECK(src, dst, fac))
break;
fac -= 1;
DRM_WARN("down fac cali: src:%d, dst:%d, fac:0x%x\n", src, dst, fac);
}
} else {
fac = VOP2_COMMON_SCL(src, dst);
for (i = 0; i < 100; i++) {
if (VOP2_COMMON_SCL_FAC_CHECK(src, dst, fac))
break;
fac -= 1;
DRM_WARN("up fac cali: src:%d, dst:%d, fac:0x%x\n", src, dst, fac);
}
}
return fac;
}
static void vop2_setup_scale(struct vop2 *vop2, const struct vop2_win *win,