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Date: Mon, 17 Sep 2012 12:19:06 +0800
From: Haojian Zhuang <haojian.zhuang@...il.com>
To: sameo@...ux.intel.com, lrg@...com,
broonie@...nsource.wolfsonmicro.com, rpurdie@...ys.net,
dmitry.torokhov@...il.com, linux-kernel@...r.kernel.org
Cc: "Jett.Zhou" <jtzhou@...vell.com>
Subject: [PATCH 3/9] regulator: 88pm860x: add pre-regulator support for 88pm860x regulator
From: "Jett.Zhou" <jtzhou@...vell.com>
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@...vell.com>
Acked-by: Haojian Zhuang <haojian.zhuang@...il.com>
---
drivers/regulator/88pm8607.c | 66 ++++++++++++++++++++++++++++++++++++++++++
1 file changed, 66 insertions(+)
diff --git a/drivers/regulator/88pm8607.c b/drivers/regulator/88pm8607.c
index 843c89a..d34bd8c 100644
--- a/drivers/regulator/88pm8607.c
+++ b/drivers/regulator/88pm8607.c
@@ -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)
--
1.7.9.5
--
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