AD7280A_READ_REG
ret = ad7280_write(st, devaddr, AD7280A_READ_REG, 0,
ret = ad7280_write(st, devaddr, AD7280A_READ_REG, 0,
ret = ad7280_write(st, AD7280A_DEVADDR_MASTER, AD7280A_READ_REG, 1,
ret = ad7280_write(st, AD7280A_DEVADDR_MASTER, AD7280A_READ_REG, 1,