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| author | Anthony Olech <anthony.olech.opensource@diasemi.com> | 2013-12-18 15:15:31 +0000 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2014-01-14 21:36:31 -0800 |
| commit | c09088d934c1e1672be8b3cfe3ba4f40ab2bf13e (patch) | |
| tree | ccecdb9e0c835bb9d36e6b800eed08f9fd9eb713 /drivers/hwmon | |
| parent | 9fb6c9c73b11bef65ba80a362547fd116c1e1c9d (diff) | |
| download | linux-c09088d934c1e1672be8b3cfe3ba4f40ab2bf13e.tar.gz linux-c09088d934c1e1672be8b3cfe3ba4f40ab2bf13e.tar.bz2 linux-c09088d934c1e1672be8b3cfe3ba4f40ab2bf13e.zip | |
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: Anthony Olech <anthony.olech.opensource@diasemi.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/hwmon')
| -rw-r--r-- | drivers/hwmon/da9052-hwmon.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/hwmon/da9052-hwmon.c b/drivers/hwmon/da9052-hwmon.c index 960fac3fb166..afd31042b452 100644 --- a/drivers/hwmon/da9052-hwmon.c +++ b/drivers/hwmon/da9052-hwmon.c @@ -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) |