[V2 1/3] regulator: add pre-regulator support for 88pm860x
Jett.Zhou
jtzhou at marvell.com
Thu Jun 21 02:18:58 EDT 2012
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.
Signed-off-by: Jett.Zhou <jtzhou at marvell.com>
---
drivers/mfd/88pm860x-core.c | 23 ++++++++++++++
drivers/regulator/88pm8607.c | 66 ++++++++++++++++++++++++++++++++++++++++++
include/linux/mfd/88pm860x.h | 1 +
3 files changed, 90 insertions(+), 0 deletions(-)
diff --git a/drivers/mfd/88pm860x-core.c b/drivers/mfd/88pm860x-core.c
index 87bd5ba..508aca5 100644
--- a/drivers/mfd/88pm860x-core.c
+++ b/drivers/mfd/88pm860x-core.c
@@ -90,6 +90,10 @@ static struct resource charger_resources[] __devinitdata = {
{PM8607_IRQ_VCHG, PM8607_IRQ_VCHG, "vchg voltage", IORESOURCE_IRQ,},
};
+static struct resource preg_resources[] __devinitdata = {
+ {PM8606_ID_PREG, PM8606_ID_PREG, "preg", IORESOURCE_IO,},
+};
+
static struct resource rtc_resources[] __devinitdata = {
{PM8607_IRQ_RTC, PM8607_IRQ_RTC, "rtc", IORESOURCE_IRQ,},
};
@@ -142,9 +146,19 @@ static struct mfd_cell codec_devs[] = {
{"88pm860x-codec", -1,},
};
+static struct regulator_consumer_supply preg_supply[] = {
+ REGULATOR_SUPPLY("preg", NULL),
+};
+
+static struct regulator_init_data preg_init_data = {
+ .num_consumer_supplies = 1,
+ .consumer_supplies = &preg_supply[0],
+};
+
static struct mfd_cell power_devs[] = {
{"88pm860x-battery", -1,},
{"88pm860x-charger", -1,},
+ {"88pm860x-preg", -1,},
};
static struct mfd_cell rtc_devs[] = {
@@ -768,6 +782,15 @@ static void __devinit device_power_init(struct pm860x_chip *chip,
&charger_resources[0], chip->irq_base);
if (ret < 0)
dev_err(chip->dev, "Failed to add charger subdev\n");
+
+ power_devs[2].platform_data = &preg_init_data;
+ power_devs[2].pdata_size = sizeof(struct regulator_init_data);
+ power_devs[2].num_resources = ARRAY_SIZE(preg_resources);
+ power_devs[2].resources = &preg_resources[0],
+ ret = mfd_add_devices(chip->dev, 0, &power_devs[2], 1,
+ &preg_resources[0], chip->irq_base);
+ if (ret < 0)
+ dev_err(chip->dev, "Failed to add preg subdev\n");
}
static void __devinit device_onkey_init(struct pm860x_chip *chip,
diff --git a/drivers/regulator/88pm8607.c b/drivers/regulator/88pm8607.c
index c3482b9..3c81fd0 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 */
@@ -372,6 +425,18 @@ 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",
@@ -379,6 +444,7 @@ 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)
diff --git a/include/linux/mfd/88pm860x.h b/include/linux/mfd/88pm860x.h
index 84d071a..7b24943 100644
--- a/include/linux/mfd/88pm860x.h
+++ b/include/linux/mfd/88pm860x.h
@@ -136,6 +136,7 @@ enum {
PM8607_ID_LDO13,
PM8607_ID_LDO14,
PM8607_ID_LDO15,
+ PM8606_ID_PREG,
PM8607_ID_RG_MAX,
};
--
1.7.0.4
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