Messages in this thread Patch in this message | | | From | Anthony Olech <> | Date | Wed, 18 Dec 2013 15:21:13 +0000 | Subject | [PATCH V1] fix adc to voltage calculation in da9052 power driver |
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The ADC resolution of the PMIC is 10-bits, this means that the maximum possible value is 1023 and not the 1024 as in the code.
Signed-off-by: Anthony Olech <anthony.olech.opensource@diasemi.com> --- This patch is relative to linux-next repository tag next-20131218
drivers/power/da9052-battery.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/power/da9052-battery.c b/drivers/power/da9052-battery.c index f8f4c0f..8f0f259 100644 --- a/drivers/power/da9052-battery.c +++ b/drivers/power/da9052-battery.c @@ -178,7 +178,7 @@ struct da9052_battery { static inline int volt_reg_to_mV(int value) { - return ((value * 1000) / 512) + 2500; + return DIV_ROUND_CLOSEST(value * 2000, 1023) + 2500; } static inline int ichg_reg_to_mA(int value) -- end-of-patch for fix adc to voltage calculation in da9052 power driver V1
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