TPS_MASK3
v2 = i2c_smbus_read_byte_data(tps->client, TPS_MASK3);
i2c_smbus_read_byte_data(client, TPS_MASK3));
(void) i2c_smbus_write_byte_data(client, TPS_MASK3, 0x0f
| i2c_smbus_read_byte_data(client, TPS_MASK3));