MISC_REG_DRIVER_CONTROL_15
REG_WR(pdev, MISC_REG_DRIVER_CONTROL_15 + 4, 0xffffffff);
val = REG_RD(pdev, MISC_REG_DRIVER_CONTROL_15);
REG_WR(pdev, MISC_REG_DRIVER_CONTROL_15, 0xffffffff);