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Commit aec312fa authored by Siddartha Mohanadoss's avatar Siddartha Mohanadoss
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iio: rradc: Update thermistor scaling 



Scale the result with scaling coefficient before performing
an integer division to retain the resolution.

Change-Id: I11480099996e16e90736c667691ff0f057c02261
Signed-off-by: default avatarSiddartha Mohanadoss <smohanad@codeaurora.org>
parent 6da25f22

drivers/iio/adc/qcom-rradc.c

+2 −2
Original line number Diff line number Diff line
@@ -331,8 +331,8 @@ static int rradc_post_process_therm(struct rradc_chip *chip, 
	int64_t temp;



	/* K = code/4 */

	temp = div64_s64(adc_code, FG_ADC_RR_BATT_THERM_LSB_K);

	temp *= FG_ADC_SCALE_MILLI_FACTOR;

	temp = ((int64_t)adc_code * FG_ADC_SCALE_MILLI_FACTOR);

	temp = div64_s64(temp, FG_ADC_RR_BATT_THERM_LSB_K);

	*result_millidegc = temp - FG_ADC_KELVINMIL_CELSIUSMIL;



	return 0;