diff options
Diffstat (limited to 'drivers/hwmon/max31790.c')
| -rw-r--r-- | drivers/hwmon/max31790.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/hwmon/max31790.c b/drivers/hwmon/max31790.c index 3dc95196b229..7aa1aa63bf1b 100644 --- a/drivers/hwmon/max31790.c +++ b/drivers/hwmon/max31790.c @@ -49,6 +49,9 @@ #define NR_CHANNEL 6 +#define PWM_INPUT_SCALE 255 +#define MAX31790_REG_PWMOUT_SCALE 511 + /* * Client data (each client gets its own) */ @@ -343,10 +346,13 @@ static int max31790_write_pwm(struct device *dev, u32 attr, int channel, err = -EINVAL; break; } + + val = DIV_ROUND_CLOSEST(val * MAX31790_REG_PWMOUT_SCALE, + PWM_INPUT_SCALE); data->valid = false; err = i2c_smbus_write_word_swapped(client, MAX31790_REG_PWMOUT(channel), - val << 8); + val << 7); break; case hwmon_pwm_enable: fan_config = data->fan_config[channel]; |