forked from luck/tmp_suning_uos_patched
regulator: 88pm860x: Add pre-regulator support for 88pm860x regulator
Pre-regulator of 88pm8606 is mainly for support charging based on vbus, it needs to be enabled for charging battery, and will be disabled in some exception condition like over-temp. Add the pre-regulator support for 88pm860x regulator driver. Signed-off-by: Jett.Zhou <jtzhou@marvell.com> Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
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@ -23,6 +23,7 @@ struct pm8607_regulator_info {
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struct pm860x_chip *chip;
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struct regulator_dev *regulator;
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struct i2c_client *i2c;
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struct i2c_client *i2c_8606;
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unsigned int *vol_table;
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unsigned int *vol_suspend;
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@ -242,6 +243,35 @@ static int pm8607_set_voltage_sel(struct regulator_dev *rdev, unsigned selector)
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return ret;
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}
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static int pm8606_preg_enable(struct regulator_dev *rdev)
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{
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struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
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return pm860x_set_bits(info->i2c, rdev->desc->enable_reg,
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1 << rdev->desc->enable_mask, 0);
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}
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static int pm8606_preg_disable(struct regulator_dev *rdev)
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{
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struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
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return pm860x_set_bits(info->i2c, rdev->desc->enable_reg,
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1 << rdev->desc->enable_mask,
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1 << rdev->desc->enable_mask);
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}
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static int pm8606_preg_is_enabled(struct regulator_dev *rdev)
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{
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struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
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int ret;
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ret = pm860x_reg_read(info->i2c, rdev->desc->enable_reg);
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if (ret < 0)
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return ret;
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return !((unsigned char)ret & (1 << rdev->desc->enable_mask));
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}
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static struct regulator_ops pm8607_regulator_ops = {
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.list_voltage = pm8607_list_voltage,
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.set_voltage_sel = pm8607_set_voltage_sel,
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@ -251,6 +281,25 @@ static struct regulator_ops pm8607_regulator_ops = {
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.is_enabled = regulator_is_enabled_regmap,
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};
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static struct regulator_ops pm8606_preg_ops = {
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.enable = pm8606_preg_enable,
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.disable = pm8606_preg_disable,
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.is_enabled = pm8606_preg_is_enabled,
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};
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#define PM8606_PREG(ereg, ebit) \
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{ \
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.desc = { \
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.name = "PREG", \
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.ops = &pm8606_preg_ops, \
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.type = REGULATOR_CURRENT, \
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.id = PM8606_ID_PREG, \
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.owner = THIS_MODULE, \
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.enable_reg = PM8606_##ereg, \
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.enable_mask = (ebit), \
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}, \
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}
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#define PM8607_DVC(vreg, ureg, ubit, ereg, ebit) \
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{ \
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.desc = { \
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@ -309,6 +358,8 @@ static struct pm8607_regulator_info pm8607_regulator_info[] = {
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PM8607_LDO(12, LDO12, 0, SUPPLIES_EN12, 5),
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PM8607_LDO(13, VIBRATOR_SET, 1, VIBRATOR_SET, 0),
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PM8607_LDO(14, LDO14, 0, SUPPLIES_EN12, 6),
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PM8606_PREG(PREREGULATORB, 5),
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};
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static int __devinit pm8607_regulator_probe(struct platform_device *pdev)
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@ -336,6 +387,8 @@ static int __devinit pm8607_regulator_probe(struct platform_device *pdev)
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return -EINVAL;
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}
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info->i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion;
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info->i2c_8606 = (chip->id == CHIP_PM8607) ? chip->companion :
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chip->client;
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info->chip = chip;
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/* check DVC ramp slope double */
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@ -371,6 +424,18 @@ static int __devexit pm8607_regulator_remove(struct platform_device *pdev)
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return 0;
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}
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static struct platform_device_id pm8607_regulator_driver_ids[] = {
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{
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.name = "88pm860x-regulator",
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.driver_data = 0,
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}, {
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.name = "88pm860x-preg",
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.driver_data = 0,
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},
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{ },
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};
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MODULE_DEVICE_TABLE(platform, pm8607_regulator_driver_ids);
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static struct platform_driver pm8607_regulator_driver = {
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.driver = {
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.name = "88pm860x-regulator",
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@ -378,6 +443,7 @@ static struct platform_driver pm8607_regulator_driver = {
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},
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.probe = pm8607_regulator_probe,
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.remove = __devexit_p(pm8607_regulator_remove),
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.id_table = pm8607_regulator_driver_ids,
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};
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static int __init pm8607_regulator_init(void)
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