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Commit c09088d9 authored by Anthony Olech's avatar Anthony Olech Committed by Guenter Roeck
Browse files

hwmon: (da9052) Fix adc to voltage calculation 



The ADC resolution of the PMIC is 10-bits, this means that the maximum
possible value is 1023 and not the 1024 as originally in the code.

Signed-off-by: default avatarAnthony Olech <anthony.olech.opensource@diasemi.com>
Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
parent 9fb6c9c7

drivers/hwmon/da9052-hwmon.c

+2 −2
Original line number Diff line number Diff line
@@ -45,7 +45,7 @@ static const char * const input_names[] = { 
/* Conversion function for VDDOUT and VBAT */

static inline int volt_reg_to_mv(int value)

{

	return DIV_ROUND_CLOSEST(value * 1000, 512) + 2500;

	return DIV_ROUND_CLOSEST(value * 2000, 1023) + 2500;

}



/* Conversion function for ADC channels 4, 5 and 6 */
@@ -57,7 +57,7 @@ static inline int input_reg_to_mv(int value) 
/* Conversion function for VBBAT */

static inline int vbbat_reg_to_mv(int value)

{

	return DIV_ROUND_CLOSEST(value * 2500, 512);

	return DIV_ROUND_CLOSEST(value * 5000, 1023);

}



static inline int da9052_enable_vddout_channel(struct da9052 *da9052)