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authorAxel Lin <axel.lin@gmail.com>2012-07-10 02:10:12 +0400
committerMark Brown <broonie@opensource.wolfsonmicro.com>2012-07-10 17:48:42 +0400
commitb669e0adb9f667acff16162ea0ff4fc404495b3c (patch)
tree4a05e6779061ff41d4c91cc0d66944a80bde35ba /drivers/regulator/max8952.c
parentaa851193bdf140c85b660c2a070e53316ad2a4d3 (diff)
downloadlinux-b669e0adb9f667acff16162ea0ff4fc404495b3c.tar.xz
regulator: max8952: Use core GPIO enable support
Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'drivers/regulator/max8952.c')
-rw-r--r--drivers/regulator/max8952.c59
1 files changed, 4 insertions, 55 deletions
diff --git a/drivers/regulator/max8952.c b/drivers/regulator/max8952.c
index ea58a4404101..355ca7bad9d5 100644
--- a/drivers/regulator/max8952.c
+++ b/drivers/regulator/max8952.c
@@ -51,7 +51,6 @@ struct max8952_data {
bool vid0;
bool vid1;
- bool en;
};
static int max8952_read_reg(struct max8952_data *max8952, u8 reg)
@@ -80,38 +79,6 @@ static int max8952_list_voltage(struct regulator_dev *rdev,
return (max8952->pdata->dvs_mode[selector] * 10 + 770) * 1000;
}
-static int max8952_is_enabled(struct regulator_dev *rdev)
-{
- struct max8952_data *max8952 = rdev_get_drvdata(rdev);
- return max8952->en;
-}
-
-static int max8952_enable(struct regulator_dev *rdev)
-{
- struct max8952_data *max8952 = rdev_get_drvdata(rdev);
-
- /* If not valid, assume "ALWAYS_HIGH" */
- if (gpio_is_valid(max8952->pdata->gpio_en))
- gpio_set_value(max8952->pdata->gpio_en, 1);
-
- max8952->en = true;
- return 0;
-}
-
-static int max8952_disable(struct regulator_dev *rdev)
-{
- struct max8952_data *max8952 = rdev_get_drvdata(rdev);
-
- /* If not valid, assume "ALWAYS_HIGH" -> not permitted */
- if (gpio_is_valid(max8952->pdata->gpio_en))
- gpio_set_value(max8952->pdata->gpio_en, 0);
- else
- return -EPERM;
-
- max8952->en = false;
- return 0;
-}
-
static int max8952_get_voltage_sel(struct regulator_dev *rdev)
{
struct max8952_data *max8952 = rdev_get_drvdata(rdev);
@@ -146,9 +113,6 @@ static int max8952_set_voltage_sel(struct regulator_dev *rdev,
static struct regulator_ops max8952_ops = {
.list_voltage = max8952_list_voltage,
- .is_enabled = max8952_is_enabled,
- .enable = max8952_enable,
- .disable = max8952_disable,
.get_voltage_sel = max8952_get_voltage_sel,
.set_voltage_sel = max8952_set_voltage_sel,
};
@@ -193,6 +157,10 @@ static int __devinit max8952_pmic_probe(struct i2c_client *client,
config.init_data = &pdata->reg_data;
config.driver_data = max8952;
+ config.ena_gpio = pdata->gpio_en;
+ if (pdata->reg_data.constraints.boot_on)
+ config.ena_gpio_flags |= GPIOF_OUT_INIT_HIGH;
+
max8952->rdev = regulator_register(&regulator, &config);
if (IS_ERR(max8952->rdev)) {
@@ -201,27 +169,9 @@ static int __devinit max8952_pmic_probe(struct i2c_client *client,
return ret;
}
- max8952->en = !!(pdata->reg_data.constraints.boot_on);
max8952->vid0 = pdata->default_mode & 0x1;
max8952->vid1 = (pdata->default_mode >> 1) & 0x1;
- if (gpio_is_valid(pdata->gpio_en)) {
- if (!gpio_request(pdata->gpio_en, "MAX8952 EN"))
- gpio_direction_output(pdata->gpio_en, max8952->en);
- else
- err = 1;
- } else
- err = 2;
-
- if (err) {
- dev_info(max8952->dev, "EN gpio invalid: assume that EN"
- "is always High\n");
- max8952->en = 1;
- pdata->gpio_en = -1; /* Mark invalid */
- }
-
- err = 0;
-
if (gpio_is_valid(pdata->gpio_vid0) &&
gpio_is_valid(pdata->gpio_vid1)) {
if (!gpio_request(pdata->gpio_vid0, "MAX8952 VID0"))
@@ -307,7 +257,6 @@ static int __devexit max8952_pmic_remove(struct i2c_client *client)
gpio_free(pdata->gpio_vid0);
gpio_free(pdata->gpio_vid1);
- gpio_free(pdata->gpio_en);
return 0;
}