SUNXI_MUSB_FL_PHY_ON
phy_on = test_bit(SUNXI_MUSB_FL_PHY_ON, &glue->flags);
set_bit(SUNXI_MUSB_FL_PHY_ON, &glue->flags);
clear_bit(SUNXI_MUSB_FL_PHY_ON, &glue->flags);
if (test_bit(SUNXI_MUSB_FL_PHY_ON, &glue->flags))