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regulator: lp8788-ldo: use ena_pin of regulator-core for external control 

Regulator core driver provides enable GPIO control for enabling/disabling a
 regulator. Now, enable GPIO is shared among regulators.
 Use this internal working, so unnecessary code are removed.
 GPIO enable pin configurations are added in digital LDO and analog LDO drivers.

Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Reviewed-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
hifive-unleashed-5.1
Kim, Milo 2013-02-18 06:51:02 +00:00 committed by Mark Brown
parent 7b74d14924
commit 407945fd78
1 changed files with 17 additions and 81 deletions
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98
drivers/regulator/lp8788-ldo.c
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@ -184,40 +184,6 @@ static enum lp8788_ldo_id lp8788_aldo_id[] = {
ALDO10,
};
static int lp8788_ldo_enable(struct regulator_dev *rdev)
{
struct lp8788_ldo *ldo = rdev_get_drvdata(rdev);
if (ldo->en_pin) {
gpio_set_value(ldo->en_pin->gpio, ENABLE);
return 0;
} else {
return regulator_enable_regmap(rdev);
}
}
static int lp8788_ldo_disable(struct regulator_dev *rdev)
{
struct lp8788_ldo *ldo = rdev_get_drvdata(rdev);
if (ldo->en_pin) {
gpio_set_value(ldo->en_pin->gpio, DISABLE);
return 0;
} else {
return regulator_disable_regmap(rdev);
}
}
static int lp8788_ldo_is_enabled(struct regulator_dev *rdev)
{
struct lp8788_ldo *ldo = rdev_get_drvdata(rdev);
if (ldo->en_pin)
return gpio_get_value(ldo->en_pin->gpio) ? 1 : 0;
else
return regulator_is_enabled_regmap(rdev);
}
static int lp8788_ldo_enable_time(struct regulator_dev *rdev)
{
struct lp8788_ldo *ldo = rdev_get_drvdata(rdev);
@ -253,17 +219,17 @@ static struct regulator_ops lp8788_ldo_voltage_table_ops = {
.list_voltage = regulator_list_voltage_table,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.enable = lp8788_ldo_enable,
.disable = lp8788_ldo_disable,
.is_enabled = lp8788_ldo_is_enabled,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
.enable_time = lp8788_ldo_enable_time,
};
static struct regulator_ops lp8788_ldo_voltage_fixed_ops = {
.get_voltage = lp8788_ldo_fixed_get_voltage,
.enable = lp8788_ldo_enable,
.disable = lp8788_ldo_disable,
.is_enabled = lp8788_ldo_is_enabled,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
.enable_time = lp8788_ldo_enable_time,
};
@ -535,43 +501,10 @@ static struct regulator_desc lp8788_aldo_desc[] = {
},
};
static int lp8788_gpio_request_ldo_en(struct platform_device *pdev,
struct lp8788_ldo *ldo,
enum lp8788_ext_ldo_en_id id)
{
struct device *dev = &pdev->dev;
struct lp8788_ldo_enable_pin *pin = ldo->en_pin;
int ret, gpio, pinstate;
char *name[] = {
[EN_ALDO1] = "LP8788_EN_ALDO1",
[EN_ALDO234] = "LP8788_EN_ALDO234",
[EN_ALDO5] = "LP8788_EN_ALDO5",
[EN_ALDO7] = "LP8788_EN_ALDO7",
[EN_DLDO7] = "LP8788_EN_DLDO7",
[EN_DLDO911] = "LP8788_EN_DLDO911",
};
gpio = pin->gpio;
if (!gpio_is_valid(gpio)) {
dev_err(dev, "invalid gpio: %d\n", gpio);
return -EINVAL;
}
pinstate = pin->init_state;
ret = devm_gpio_request_one(dev, gpio, pinstate, name[id]);
if (ret == -EBUSY) {
dev_warn(dev, "gpio%d already used\n", gpio);
return 0;
}
return ret;
}
static int lp8788_config_ldo_enable_mode(struct platform_device *pdev,
struct lp8788_ldo *ldo,
enum lp8788_ldo_id id)
{
int ret;
struct lp8788 *lp = ldo->lp;
struct lp8788_platform_data *pdata = lp->pdata;
enum lp8788_ext_ldo_en_id enable_id;
@ -613,14 +546,7 @@ static int lp8788_config_ldo_enable_mode(struct platform_device *pdev,
goto set_default_ldo_enable_mode;
ldo->en_pin = pdata->ldo_pin[enable_id];
ret = lp8788_gpio_request_ldo_en(pdev, ldo, enable_id);
if (ret) {
ldo->en_pin = NULL;
goto set_default_ldo_enable_mode;
}
return ret;
return 0;
set_default_ldo_enable_mode:
return lp8788_update_bits(lp, LP8788_EN_SEL, en_mask[enable_id], 0);
@ -644,6 +570,11 @@ static int lp8788_dldo_probe(struct platform_device *pdev)
if (ret)
return ret;
if (ldo->en_pin) {
cfg.ena_gpio = ldo->en_pin->gpio;
cfg.ena_gpio_flags = ldo->en_pin->init_state;
}
cfg.dev = pdev->dev.parent;
cfg.init_data = lp->pdata ? lp->pdata->dldo_data[id] : NULL;
cfg.driver_data = ldo;
@ -700,6 +631,11 @@ static int lp8788_aldo_probe(struct platform_device *pdev)
if (ret)
return ret;
if (ldo->en_pin) {
cfg.ena_gpio = ldo->en_pin->gpio;
cfg.ena_gpio_flags = ldo->en_pin->init_state;
}
cfg.dev = pdev->dev.parent;
cfg.init_data = lp->pdata ? lp->pdata->aldo_data[id] : NULL;
cfg.driver_data = ldo;