MEM2MEM_VFLIP
ctx->mode |= MEM2MEM_VFLIP;
ctx->mode &= ~MEM2MEM_VFLIP;
ctrl = BF_PXP_CTRL_VFLIP0(!!(ctx->mode & MEM2MEM_VFLIP)) |
ctx->mode |= MEM2MEM_VFLIP;
ctx->mode &= ~MEM2MEM_VFLIP;
if (ctx->mode & MEM2MEM_VFLIP) {