diff options
Diffstat (limited to 'drivers/hwmon/ina230.c')
| -rw-r--r-- | drivers/hwmon/ina230.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/hwmon/ina230.c b/drivers/hwmon/ina230.c index 373a4062ef11..65b94eeb70cd 100644 --- a/drivers/hwmon/ina230.c +++ b/drivers/hwmon/ina230.c @@ -206,7 +206,18 @@ static s32 __locked_start_current_mon(struct i2c_client *client) return retval; } - shunt_uV = data->pdata->resistor * data->pdata->current_threshold; + if (data->pdata->resistor) { + shunt_uV = data->pdata->resistor; + shunt_uV *= data->pdata->current_threshold; + } else { + s32 v; + /* no resistor value defined, compute shunt_uV the hard way */ + v = data->pdata->precision_multiplier * 5120 * 25; + v /= data->pdata->calibration_data; + v *= data->pdata->current_threshold; + v /= data->pdata->power_lsb; + shunt_uV = (s16)(v & 0xffff); + } if (data->pdata->shunt_polarity_inverted) shunt_uV *= -1; |