lux64 = lux64 * chip->als_settings.als_gain_trim;
lux64 >>= 13;
lux = lux64;
- lux = (lux + 500) / 1000;
+ lux = DIV_ROUND_CLOSEST(lux, 1000);
if (lux > TSL2583_LUX_CALC_OVER_FLOW) { /* check for overflow */
return_max:
u8 val;
/* determine als integration register */
- als_count = (chip->als_settings.als_time * 100 + 135) / 270;
+ als_count = DIV_ROUND_CLOSEST(chip->als_settings.als_time * 100, 270);
if (!als_count)
als_count = 1; /* ensure at least one cycle */
/* convert back to time (encompasses overrides) */
- als_time = (als_count * 27 + 5) / 10;
+ als_time = DIV_ROUND_CLOSEST(als_count * 27, 10);
val = 256 - als_count;
ret = i2c_smbus_write_byte_data(chip->client,
/* set chip struct re scaling and saturation */
chip->als_saturation = als_count * 922; /* 90% of full scale */
- chip->als_time_scale = (als_time + 25) / 50;
+ chip->als_time_scale = DIV_ROUND_CLOSEST(als_time, 50);
return ret;
}