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Date: Wed, 27 Jun 2012 15:12:04 +0100
From: Mark Brown <broonie@...nsource.wolfsonmicro.com>
To: Liam Girdwood <lrg@...com>
Cc: linux-kernel@...r.kernel.org,
Mark Brown <broonie@...nsource.wolfsonmicro.com>
Subject: [PATCH 3/5] regulator: fixed: Use core GPIO enable support
This is essentially the code that was factored out into the core when the
feature was implemented.
Signed-off-by: Mark Brown <broonie@...nsource.wolfsonmicro.com>
---
drivers/regulator/fixed.c | 98 ++++-----------------------------------------
1 file changed, 8 insertions(+), 90 deletions(-)
diff --git a/drivers/regulator/fixed.c b/drivers/regulator/fixed.c
index f7b2642..4d12b62 100644
--- a/drivers/regulator/fixed.c
+++ b/drivers/regulator/fixed.c
@@ -35,9 +35,6 @@ struct fixed_voltage_data {
struct regulator_desc desc;
struct regulator_dev *dev;
int microvolts;
- int gpio;
- bool enable_high;
- bool is_enabled;
};
@@ -95,33 +92,6 @@ of_get_fixed_voltage_config(struct device *dev)
return config;
}
-static int fixed_voltage_is_enabled(struct regulator_dev *dev)
-{
- struct fixed_voltage_data *data = rdev_get_drvdata(dev);
-
- return data->is_enabled;
-}
-
-static int fixed_voltage_enable(struct regulator_dev *dev)
-{
- struct fixed_voltage_data *data = rdev_get_drvdata(dev);
-
- gpio_set_value_cansleep(data->gpio, data->enable_high);
- data->is_enabled = true;
-
- return 0;
-}
-
-static int fixed_voltage_disable(struct regulator_dev *dev)
-{
- struct fixed_voltage_data *data = rdev_get_drvdata(dev);
-
- gpio_set_value_cansleep(data->gpio, !data->enable_high);
- data->is_enabled = false;
-
- return 0;
-}
-
static int fixed_voltage_get_voltage(struct regulator_dev *dev)
{
struct fixed_voltage_data *data = rdev_get_drvdata(dev);
@@ -143,14 +113,6 @@ static int fixed_voltage_list_voltage(struct regulator_dev *dev,
return data->microvolts;
}
-static struct regulator_ops fixed_voltage_gpio_ops = {
- .is_enabled = fixed_voltage_is_enabled,
- .enable = fixed_voltage_enable,
- .disable = fixed_voltage_disable,
- .get_voltage = fixed_voltage_get_voltage,
- .list_voltage = fixed_voltage_list_voltage,
-};
-
static struct regulator_ops fixed_voltage_ops = {
.get_voltage = fixed_voltage_get_voltage,
.list_voltage = fixed_voltage_list_voltage,
@@ -187,6 +149,7 @@ static int __devinit reg_fixed_voltage_probe(struct platform_device *pdev)
}
drvdata->desc.type = REGULATOR_VOLTAGE;
drvdata->desc.owner = THIS_MODULE;
+ drvdata->desc.ops = &fixed_voltage_ops;
drvdata->desc.enable_time = config->startup_delay;
@@ -194,53 +157,13 @@ static int __devinit reg_fixed_voltage_probe(struct platform_device *pdev)
drvdata->desc.n_voltages = 1;
drvdata->microvolts = config->microvolts;
- drvdata->gpio = config->gpio;
-
- if (gpio_is_valid(config->gpio)) {
- int gpio_flag;
- drvdata->enable_high = config->enable_high;
-
- /* FIXME: Remove below print warning
- *
- * config->gpio must be set to -EINVAL by platform code if
- * GPIO control is not required. However, early adopters
- * not requiring GPIO control may forget to initialize
- * config->gpio to -EINVAL. This will cause GPIO 0 to be used
- * for GPIO control.
- *
- * This warning will be removed once there are a couple of users
- * for this driver.
- */
- if (!config->gpio)
- dev_warn(&pdev->dev,
- "using GPIO 0 for regulator enable control\n");
-
- /*
- * set output direction without changing state
- * to prevent glitch
- */
- drvdata->is_enabled = config->enabled_at_boot;
- ret = drvdata->is_enabled ?
- config->enable_high : !config->enable_high;
- gpio_flag = ret ? GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW;
-
- if (config->gpio_is_open_drain)
- gpio_flag |= GPIOF_OPEN_DRAIN;
-
- ret = gpio_request_one(config->gpio, gpio_flag,
- config->supply_name);
- if (ret) {
- dev_err(&pdev->dev,
- "Could not obtain regulator enable GPIO %d: %d\n",
- config->gpio, ret);
- goto err_name;
- }
-
- drvdata->desc.ops = &fixed_voltage_gpio_ops;
- } else {
- drvdata->desc.ops = &fixed_voltage_ops;
- }
+ cfg.ena_gpio = config->gpio;
+ cfg.ena_gpio_invert = !config->enable_high;
+ if (config->enabled_at_boot)
+ cfg.ena_gpio_flags |= GPIOF_OUT_INIT_HIGH;
+ if (config->gpio_is_open_drain)
+ cfg.ena_gpio_flags |= GPIOF_OPEN_DRAIN;
cfg.dev = &pdev->dev;
cfg.init_data = config->init_data;
@@ -251,7 +174,7 @@ static int __devinit reg_fixed_voltage_probe(struct platform_device *pdev)
if (IS_ERR(drvdata->dev)) {
ret = PTR_ERR(drvdata->dev);
dev_err(&pdev->dev, "Failed to register regulator: %d\n", ret);
- goto err_gpio;
+ goto err_name;
}
platform_set_drvdata(pdev, drvdata);
@@ -261,9 +184,6 @@ static int __devinit reg_fixed_voltage_probe(struct platform_device *pdev)
return 0;
-err_gpio:
- if (gpio_is_valid(config->gpio))
- gpio_free(config->gpio);
err_name:
kfree(drvdata->desc.name);
err:
@@ -275,8 +195,6 @@ static int __devexit reg_fixed_voltage_remove(struct platform_device *pdev)
struct fixed_voltage_data *drvdata = platform_get_drvdata(pdev);
regulator_unregister(drvdata->dev);
- if (gpio_is_valid(drvdata->gpio))
- gpio_free(drvdata->gpio);
kfree(drvdata->desc.name);
return 0;
--
1.7.10
--
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