regulator: Add a pointer to aat2870_data in struct aat2870_regulator

The reason we add *pdev in struct aat2870_regulator is to use it
to get a pointer to struct aat2870_data.
Save a pointer to struct aat2870_data instead of pdev in struct
aat2870_regulator, this change makes the intention more clear.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Jin Park <jinyoungp@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

diff --git a/drivers/regulator/aat2870-regulator.c b/drivers/regulator/aat2870-regulator.c
index 685ad43..9ed5c5d 100644 (file)
--- a/drivers/regulator/aat2870-regulator.c
+++ b/drivers/regulator/aat2870-regulator.c
@@ -31,7 +31,7 @@
 #include <linux/mfd/aat2870.h>
 
 struct aat2870_regulator {
-       struct platform_device *pdev;
+       struct aat2870_data *aat2870;
        struct regulator_desc desc;
 
        const int *voltages; /* uV */
@@ -60,7 +60,7 @@ static int aat2870_ldo_set_voltage_sel(struct regulator_dev *rdev,
                                       unsigned selector)
 {
        struct aat2870_regulator *ri = rdev_get_drvdata(rdev);
-       struct aat2870_data *aat2870 = dev_get_drvdata(ri->pdev->dev.parent);
+       struct aat2870_data *aat2870 = ri->aat2870;
 
        return aat2870->update(aat2870, ri->voltage_addr, ri->voltage_mask,
                               selector << ri->voltage_shift);
@@ -69,7 +69,7 @@ static int aat2870_ldo_set_voltage_sel(struct regulator_dev *rdev,
 static int aat2870_ldo_get_voltage_sel(struct regulator_dev *rdev)
 {
        struct aat2870_regulator *ri = rdev_get_drvdata(rdev);
-       struct aat2870_data *aat2870 = dev_get_drvdata(ri->pdev->dev.parent);
+       struct aat2870_data *aat2870 = ri->aat2870;
        u8 val;
        int ret;
 
@@ -83,7 +83,7 @@ static int aat2870_ldo_get_voltage_sel(struct regulator_dev *rdev)
 static int aat2870_ldo_enable(struct regulator_dev *rdev)
 {
        struct aat2870_regulator *ri = rdev_get_drvdata(rdev);
-       struct aat2870_data *aat2870 = dev_get_drvdata(ri->pdev->dev.parent);
+       struct aat2870_data *aat2870 = ri->aat2870;
 
        return aat2870->update(aat2870, ri->enable_addr, ri->enable_mask,
                               ri->enable_mask);
@@ -92,7 +92,7 @@ static int aat2870_ldo_enable(struct regulator_dev *rdev)
 static int aat2870_ldo_disable(struct regulator_dev *rdev)
 {
        struct aat2870_regulator *ri = rdev_get_drvdata(rdev);
-       struct aat2870_data *aat2870 = dev_get_drvdata(ri->pdev->dev.parent);
+       struct aat2870_data *aat2870 = ri->aat2870;
 
        return aat2870->update(aat2870, ri->enable_addr, ri->enable_mask, 0);
 }
@@ -100,7 +100,7 @@ static int aat2870_ldo_disable(struct regulator_dev *rdev)
 static int aat2870_ldo_is_enabled(struct regulator_dev *rdev)
 {
        struct aat2870_regulator *ri = rdev_get_drvdata(rdev);
-       struct aat2870_data *aat2870 = dev_get_drvdata(ri->pdev->dev.parent);
+       struct aat2870_data *aat2870 = ri->aat2870;
        u8 val;
        int ret;
 
@@ -185,7 +185,7 @@ static int aat2870_regulator_probe(struct platform_device *pdev)
                dev_err(&pdev->dev, "Invalid device ID, %d\n", pdev->id);
                return -EINVAL;
        }
-       ri->pdev = pdev;
+       ri->aat2870 = dev_get_drvdata(pdev->dev.parent);
 
        rdev = regulator_register(&ri->desc, &pdev->dev,
                                  pdev->dev.platform_data, ri, NULL);