exynos: fimg2d: introduce G2D_OP_INTERPOLATE

This sets up the blending equation in the following way:
out = src * src_alpha + dst * (1 - src_alpha)

Signed-off-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Tested-by: Joonyoung Shim <jy0922.shim@samsung.com>

2 files changed, 5 insertions, 0 deletions

diff --git a/exynos/exynos_fimg2d.c b/exynos/exynos_fimg2d.c
index 398a8442..697ab16b 100644
--- a/exynos/exynos_fimg2d.c
+++ b/exynos/exynos_fimg2d.c
@@ -87,6 +87,10 @@ static unsigned int g2d_get_blend_op(enum e_g2d_op op)
                 SET_BF(val, G2D_COEFF_MODE_ONE, 0, 0, 0,
                                 G2D_COEFF_MODE_SRC_ALPHA, 1, 0, 0);
                 break;
+        case G2D_OP_INTERPOLATE:
+                SET_BF(val, G2D_COEFF_MODE_SRC_ALPHA, 0, 0, 0,
+                                G2D_COEFF_MODE_SRC_ALPHA, 1, 0, 0);
+                break;
         default:
                 fprintf(stderr, "Not support operation(%d).\n", op);
                 SET_BF(val, G2D_COEFF_MODE_ONE, 0, 0, 0, G2D_COEFF_MODE_ZERO,
diff --git a/exynos/fimg2d.h b/exynos/fimg2d.h
index d98f7bc8..c6d67caf 100644
--- a/exynos/fimg2d.h
+++ b/exynos/fimg2d.h
@@ -142,6 +142,7 @@ enum e_g2d_op {
         G2D_OP_SRC                      = 0x01,
         G2D_OP_DST                      = 0x02,
         G2D_OP_OVER                     = 0x03,
+        G2D_OP_INTERPOLATE              = 0x04,
         G2D_OP_DISJOINT_CLEAR           = 0x10,
         G2D_OP_DISJOINT_SRC             = 0x11,
         G2D_OP_DISJOINT_DST             = 0x12,