B43_PHY_LPFGAINCTL
b43_phy_mask(dev, B43_PHY_LPFGAINCTL, 0xFF0F);
b43_phy_maskset(dev, B43_PHY_LPFGAINCTL, ~0x000F, 0x0004);
b43_phy_maskset(dev, B43_PHY_LPFGAINCTL, 0x0FFF, 0x3000);