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regulator: max8998: Use simple equation to get selector
It's more efficient to get the best selector by simple equation. Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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parent
2358b7763e
commit
2e42a7dc40
1 changed files with 10 additions and 9 deletions
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@ -306,8 +306,7 @@ static int max8998_set_voltage_ldo(struct regulator_dev *rdev,
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int min_vol = min_uV / 1000, max_vol = max_uV / 1000;
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int min_vol = min_uV / 1000, max_vol = max_uV / 1000;
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const struct voltage_map_desc *desc;
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const struct voltage_map_desc *desc;
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int ldo = rdev_get_id(rdev);
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int ldo = rdev_get_id(rdev);
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int reg, shift = 0, mask, ret;
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int reg, shift = 0, mask, ret, i;
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int i = 0;
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if (ldo >= ARRAY_SIZE(ldo_voltage_map))
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if (ldo >= ARRAY_SIZE(ldo_voltage_map))
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return -EINVAL;
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return -EINVAL;
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@ -319,9 +318,10 @@ static int max8998_set_voltage_ldo(struct regulator_dev *rdev,
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if (max_vol < desc->min || min_vol > desc->max)
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if (max_vol < desc->min || min_vol > desc->max)
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return -EINVAL;
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return -EINVAL;
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while (desc->min + desc->step*i < min_vol &&
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if (min_vol < desc->min)
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desc->min + desc->step*i < desc->max)
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min_vol = desc->min;
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i++;
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i = DIV_ROUND_UP(min_vol - desc->min, desc->step);
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if (desc->min + desc->step*i > max_vol)
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if (desc->min + desc->step*i > max_vol)
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return -EINVAL;
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return -EINVAL;
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@ -359,7 +359,7 @@ static int max8998_set_voltage_buck(struct regulator_dev *rdev,
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const struct voltage_map_desc *desc;
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const struct voltage_map_desc *desc;
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int buck = rdev_get_id(rdev);
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int buck = rdev_get_id(rdev);
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int reg, shift = 0, mask, ret;
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int reg, shift = 0, mask, ret;
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int difference = 0, i = 0, j = 0, previous_vol = 0;
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int difference = 0, i, j = 0, previous_vol = 0;
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u8 val = 0;
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u8 val = 0;
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static u8 buck1_last_val;
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static u8 buck1_last_val;
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@ -374,9 +374,10 @@ static int max8998_set_voltage_buck(struct regulator_dev *rdev,
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if (max_vol < desc->min || min_vol > desc->max)
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if (max_vol < desc->min || min_vol > desc->max)
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return -EINVAL;
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return -EINVAL;
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while (desc->min + desc->step*i < min_vol &&
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if (min_vol < desc->min)
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desc->min + desc->step*i < desc->max)
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min_vol = desc->min;
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i++;
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i = DIV_ROUND_UP(min_vol - desc->min, desc->step);
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if (desc->min + desc->step*i > max_vol)
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if (desc->min + desc->step*i > max_vol)
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return -EINVAL;
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return -EINVAL;
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