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iio: adc: twl4030_madc: Fix calculation of the temperature sense current

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The bit mask to read the setting of the constant current source
for measuring the NTC voltage was the wrong one. Since default
value is initialized to the lowest level (000 = 10uA) the difference
was probably never noticed in practice.

Signed-off-by: H. Nikolaus Schaller <[email protected]>
Signed-off-by: Marek Belisko <[email protected]>
Signed-off-by: Jonathan Cameron <[email protected]>
This commit is contained in:
H. Nikolaus Schaller 2015-05-28 21:50:18 +02:00 • committed by Jonathan Cameron
commit 0cbb39f143
1 changed files with 1 additions and 1 deletions
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drivers/iio/adc/twl4030-madc.c
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@ -235,7 +235,7 @@ static int twl4030battery_temperature(int raw_volt)
if (ret < 0)
return ret;
curr = ((val & TWL4030_BCI_ITHEN) + 1) * 10;
curr = ((val & TWL4030_BCI_ITHSENS) + 1) * 10;
/* Getting and calculating the thermistor resistance in ohms */
res = volt * 1000 / curr;
/* calculating temperature */