return ((15625 * ticks) >> 13) - 6000;
}
-/**
- * sht21_read_word_data() - read word from register
- * @client: I2C client device
- * @reg: I2C command byte
- *
- * Returns value, negative errno on error.
- */
-static inline int sht21_read_word_data(struct i2c_client *client, u8 reg)
-{
- int ret = i2c_smbus_read_word_data(client, reg);
- if (ret < 0)
- return ret;
- /*
- * SMBus specifies low byte first, but the SHT21 returns MSB
- * first, so we have to swab16 the values
- */
- return swab16(ret);
-}
-
/**
* sht21_update_measurements() - get updated measurements from device
* @client: I2C client device
* maximum two measurements per second at 12bit accuracy shall be made.
*/
if (time_after(jiffies, sht21->last_update + HZ / 2) || !sht21->valid) {
- ret = sht21_read_word_data(client, SHT21_TRIG_T_MEASUREMENT_HM);
+ ret = i2c_smbus_read_word_swapped(client,
+ SHT21_TRIG_T_MEASUREMENT_HM);
if (ret < 0)
goto out;
sht21->temperature = sht21_temp_ticks_to_millicelsius(ret);
- ret = sht21_read_word_data(client,
- SHT21_TRIG_RH_MEASUREMENT_HM);
+ ret = i2c_smbus_read_word_swapped(client,
+ SHT21_TRIG_RH_MEASUREMENT_HM);
if (ret < 0)
goto out;
sht21->humidity = sht21_rh_ticks_to_per_cent_mille(ret);