ALPHA_SRC_PRE_MUL
val = SRC_ALPHA_EN(1) | SRC_COLOR_M0(ALPHA_SRC_PRE_MUL) |
VOP_WIN_SET(vop, win, alpha_pre_mul, ALPHA_SRC_PRE_MUL);
ALPHA_SRC_PRE_MUL : ALPHA_SRC_NO_PRE_MUL;
ALPHA_SRC_PRE_MUL : ALPHA_SRC_NO_PRE_MUL;
alpha->src_color_ctrl.bits.color_mode = ALPHA_SRC_PRE_MUL;