diff options
Diffstat (limited to 'drivers/hwmon')
| -rw-r--r-- | drivers/hwmon/adm1026.c | 26 |
1 files changed, 17 insertions, 9 deletions
diff --git a/drivers/hwmon/adm1026.c b/drivers/hwmon/adm1026.c index e67b9a50ac7c..b2a5d9e5c590 100644 --- a/drivers/hwmon/adm1026.c +++ b/drivers/hwmon/adm1026.c @@ -197,8 +197,9 @@ static int adm1026_scaling[] = { /* .001 Volts */ }; #define NEG12_OFFSET 16000 #define SCALE(val, from, to) (((val)*(to) + ((from)/2))/(from)) -#define INS_TO_REG(n, val) (clamp_val(SCALE(val, adm1026_scaling[n], 192),\ - 0, 255)) +#define INS_TO_REG(n, val) \ + SCALE(clamp_val(val, 0, 255 * adm1026_scaling[n] / 192), \ + adm1026_scaling[n], 192) #define INS_FROM_REG(n, val) (SCALE(val, 192, adm1026_scaling[n])) /* @@ -215,11 +216,11 @@ static int adm1026_scaling[] = { /* .001 Volts */ #define DIV_TO_REG(val) ((val) >= 8 ? 3 : (val) >= 4 ? 2 : (val) >= 2 ? 1 : 0) /* Temperature is reported in 1 degC increments */ -#define TEMP_TO_REG(val) (clamp_val(((val) + ((val) < 0 ? -500 : 500)) \ - / 1000, -127, 127)) +#define TEMP_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val(val, -128000, 127000), \ + 1000) #define TEMP_FROM_REG(val) ((val) * 1000) -#define OFFSET_TO_REG(val) (clamp_val(((val) + ((val) < 0 ? -500 : 500)) \ - / 1000, -127, 127)) +#define OFFSET_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val(val, -128000, 127000), \ + 1000) #define OFFSET_FROM_REG(val) ((val) * 1000) #define PWM_TO_REG(val) (clamp_val(val, 0, 255)) @@ -233,7 +234,8 @@ static int adm1026_scaling[] = { /* .001 Volts */ * indicates that the DAC could be used to drive the fans, but in our * example board (Arima HDAMA) it isn't connected to the fans at all. */ -#define DAC_TO_REG(val) (clamp_val(((((val) * 255) + 500) / 2500), 0, 255)) +#define DAC_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val(val, 0, 2500) * 255, \ + 2500) #define DAC_FROM_REG(val) (((val) * 2500) / 255) /* @@ -593,7 +595,10 @@ static ssize_t set_in16_min(struct device *dev, struct device_attribute *attr, return err; mutex_lock(&data->update_lock); - data->in_min[16] = INS_TO_REG(16, val + NEG12_OFFSET); + data->in_min[16] = INS_TO_REG(16, + clamp_val(val, INT_MIN, + INT_MAX - NEG12_OFFSET) + + NEG12_OFFSET); adm1026_write_value(client, ADM1026_REG_IN_MIN[16], data->in_min[16]); mutex_unlock(&data->update_lock); return count; @@ -618,7 +623,10 @@ static ssize_t set_in16_max(struct device *dev, struct device_attribute *attr, return err; mutex_lock(&data->update_lock); - data->in_max[16] = INS_TO_REG(16, val+NEG12_OFFSET); + data->in_max[16] = INS_TO_REG(16, + clamp_val(val, INT_MIN, + INT_MAX - NEG12_OFFSET) + + NEG12_OFFSET); adm1026_write_value(client, ADM1026_REG_IN_MAX[16], data->in_max[16]); mutex_unlock(&data->update_lock); return count; |