forked from Minki/linux
regulator: max1586: Implement get_voltage_sel callback
This is required since commit f7df20ec32
"regulator: core: Use list_voltage() to read single voltage regulators",
otherwise _regulator_get_voltage returns rdev->desc->ops->list_voltage(rdev, 0).
The Maxim 1586 controls V3 and V6 voltages, but offers no way of reading back
the set up value. Thus this patch caches the setting when setting new voltage.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
parent
9489e9dcae
commit
4efd9dfecb
@ -44,6 +44,9 @@ struct max1586_data {
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unsigned int min_uV;
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unsigned int max_uV;
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unsigned int v3_curr_sel;
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unsigned int v6_curr_sel;
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struct regulator_dev *rdev[0];
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};
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@ -63,31 +66,60 @@ static int v6_voltages_uv[] = { 1, 1800000, 2500000, 3000000 };
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* R24 and R25=100kOhm as described in the data sheet.
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* The gain is approximately: 1 + R24/R25 + R24/185.5kOhm
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*/
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static int max1586_v3_get_voltage_sel(struct regulator_dev *rdev)
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{
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struct max1586_data *max1586 = rdev_get_drvdata(rdev);
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return max1586->v3_curr_sel;
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}
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static int max1586_v3_set_voltage_sel(struct regulator_dev *rdev,
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unsigned selector)
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{
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struct max1586_data *max1586 = rdev_get_drvdata(rdev);
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struct i2c_client *client = max1586->client;
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int ret;
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u8 v3_prog;
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dev_dbg(&client->dev, "changing voltage v3 to %dmv\n",
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regulator_list_voltage_linear(rdev, selector) / 1000);
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v3_prog = I2C_V3_SELECT | (u8) selector;
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return i2c_smbus_write_byte(client, v3_prog);
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ret = i2c_smbus_write_byte(client, v3_prog);
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if (ret)
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return ret;
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max1586->v3_curr_sel = selector;
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return 0;
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}
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static int max1586_v6_get_voltage_sel(struct regulator_dev *rdev)
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{
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struct max1586_data *max1586 = rdev_get_drvdata(rdev);
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return max1586->v6_curr_sel;
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}
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static int max1586_v6_set_voltage_sel(struct regulator_dev *rdev,
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unsigned int selector)
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{
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struct i2c_client *client = rdev_get_drvdata(rdev);
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struct max1586_data *max1586 = rdev_get_drvdata(rdev);
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struct i2c_client *client = max1586->client;
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u8 v6_prog;
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int ret;
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dev_dbg(&client->dev, "changing voltage v6 to %dmv\n",
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rdev->desc->volt_table[selector] / 1000);
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v6_prog = I2C_V6_SELECT | (u8) selector;
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return i2c_smbus_write_byte(client, v6_prog);
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ret = i2c_smbus_write_byte(client, v6_prog);
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if (ret)
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return ret;
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max1586->v6_curr_sel = selector;
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return 0;
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}
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/*
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@ -95,12 +127,14 @@ static int max1586_v6_set_voltage_sel(struct regulator_dev *rdev,
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* the set up value.
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*/
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static struct regulator_ops max1586_v3_ops = {
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.get_voltage_sel = max1586_v3_get_voltage_sel,
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.set_voltage_sel = max1586_v3_set_voltage_sel,
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.list_voltage = regulator_list_voltage_linear,
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.map_voltage = regulator_map_voltage_linear,
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};
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static struct regulator_ops max1586_v6_ops = {
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.get_voltage_sel = max1586_v6_get_voltage_sel,
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.set_voltage_sel = max1586_v6_set_voltage_sel,
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.list_voltage = regulator_list_voltage_table,
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};
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@ -148,6 +182,10 @@ static int __devinit max1586_pmic_probe(struct i2c_client *client,
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max1586->min_uV = MAX1586_V3_MIN_UV / 1000 * pdata->v3_gain / 1000;
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max1586->max_uV = MAX1586_V3_MAX_UV / 1000 * pdata->v3_gain / 1000;
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/* Set curr_sel to default voltage on power-up */
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max1586->v3_curr_sel = 24; /* 1.3V */
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max1586->v6_curr_sel = 0;
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rdev = max1586->rdev;
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for (i = 0; i < pdata->num_subdevs && i <= MAX1586_V6; i++) {
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id = pdata->subdevs[i].id;
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