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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>
This commit is contained in:
Jett.Zhou 2012-09-17 12:19:06 +08:00 committed by Samuel Ortiz
parent 51acdb6118
commit e7a7810ae0
1 changed files with 66 additions and 0 deletions
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66
drivers/regulator/88pm8607.c
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@ -23,6 +23,7 @@ struct pm8607_regulator_info {
struct pm860x_chip *chip;
struct regulator_dev *regulator;
struct i2c_client *i2c;
struct i2c_client *i2c_8606;
unsigned int *vol_table;
unsigned int *vol_suspend;
@ -242,6 +243,35 @@ static int pm8607_set_voltage_sel(struct regulator_dev *rdev, unsigned selector)
return ret;
}
static int pm8606_preg_enable(struct regulator_dev *rdev)
{
struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
return pm860x_set_bits(info->i2c, rdev->desc->enable_reg,
1 << rdev->desc->enable_mask, 0);
}
static int pm8606_preg_disable(struct regulator_dev *rdev)
{
struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
return pm860x_set_bits(info->i2c, rdev->desc->enable_reg,
1 << rdev->desc->enable_mask,
1 << rdev->desc->enable_mask);
}
static int pm8606_preg_is_enabled(struct regulator_dev *rdev)
{
struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
int ret;
ret = pm860x_reg_read(info->i2c, rdev->desc->enable_reg);
if (ret < 0)
return ret;
return !((unsigned char)ret & (1 << rdev->desc->enable_mask));
}
static struct regulator_ops pm8607_regulator_ops = {
.list_voltage = pm8607_list_voltage,
.set_voltage_sel = pm8607_set_voltage_sel,
@ -251,6 +281,25 @@ static struct regulator_ops pm8607_regulator_ops = {
.is_enabled = regulator_is_enabled_regmap,
};
static struct regulator_ops pm8606_preg_ops = {
.enable = pm8606_preg_enable,
.disable = pm8606_preg_disable,
.is_enabled = pm8606_preg_is_enabled,
};
#define PM8606_PREG(ereg, ebit) \
{ \
.desc = { \
.name = "PREG", \
.ops = &pm8606_preg_ops, \
.type = REGULATOR_CURRENT, \
.id = PM8606_ID_PREG, \
.owner = THIS_MODULE, \
.enable_reg = PM8606_##ereg, \
.enable_mask = (ebit), \
}, \
}
#define PM8607_DVC(vreg, ureg, ubit, ereg, ebit) \
{ \
.desc = { \
@ -309,6 +358,8 @@ static struct pm8607_regulator_info pm8607_regulator_info[] = {
PM8607_LDO(12, LDO12, 0, SUPPLIES_EN12, 5),
PM8607_LDO(13, VIBRATOR_SET, 1, VIBRATOR_SET, 0),
PM8607_LDO(14, LDO14, 0, SUPPLIES_EN12, 6),
PM8606_PREG(PREREGULATORB, 5),
};
static int __devinit pm8607_regulator_probe(struct platform_device *pdev)
@ -336,6 +387,8 @@ static int __devinit pm8607_regulator_probe(struct platform_device *pdev)
return -EINVAL;
}
info->i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion;
info->i2c_8606 = (chip->id == CHIP_PM8607) ? chip->companion :
chip->client;
info->chip = chip;
/* check DVC ramp slope double */
@ -371,6 +424,18 @@ static int __devexit pm8607_regulator_remove(struct platform_device *pdev)
return 0;
}
static struct platform_device_id pm8607_regulator_driver_ids[] = {
{
.name = "88pm860x-regulator",
.driver_data = 0,
}, {
.name = "88pm860x-preg",
.driver_data = 0,
},
{ },
};
MODULE_DEVICE_TABLE(platform, pm8607_regulator_driver_ids);
static struct platform_driver pm8607_regulator_driver = {
.driver = {
.name = "88pm860x-regulator",
@ -378,6 +443,7 @@ static struct platform_driver pm8607_regulator_driver = {
},
.probe = pm8607_regulator_probe,
.remove = __devexit_p(pm8607_regulator_remove),
.id_table = pm8607_regulator_driver_ids,
};
static int __init pm8607_regulator_init(void)