power: supply: max17042_battery: Improve accuracy of current_now and current_avg readings
Dividing 1562500 by r_sns value usually doesn't result in an integer. Signed-off-by: Sebastian Krzyszkowiak <sebastian.krzyszkowiak@puri.sm> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This commit is contained in:
Родитель
4b0a56e692
Коммит
9e39ef1487
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@ -395,8 +395,8 @@ static int max17042_get_property(struct power_supply *psy,
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if (ret < 0)
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if (ret < 0)
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return ret;
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return ret;
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val->intval = sign_extend32(data, 15);
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data64 = sign_extend64(data, 15) * 1562500ll;
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val->intval *= 1562500 / chip->pdata->r_sns;
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val->intval = div_s64(data64, chip->pdata->r_sns);
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} else {
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} else {
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return -EINVAL;
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return -EINVAL;
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}
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}
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@ -407,8 +407,8 @@ static int max17042_get_property(struct power_supply *psy,
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if (ret < 0)
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if (ret < 0)
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return ret;
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return ret;
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val->intval = sign_extend32(data, 15);
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data64 = sign_extend64(data, 15) * 1562500ll;
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val->intval *= 1562500 / chip->pdata->r_sns;
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val->intval = div_s64(data64, chip->pdata->r_sns);
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} else {
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} else {
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return -EINVAL;
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return -EINVAL;
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}
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}
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