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Date: Sun, 01 Sep 2013 12:24:17 +0800
From: Axel Lin <axel.lin@...ics.com>
To: Mark Brown <broonie@...nel.org>
Cc: Matthias Kaehlcke <matthias.list@...hlcke.net>,
Liam Girdwood <lgirdwood@...il.com>,
linux-kernel@...r.kernel.org
Subject: [PATCH] regulator: core: Refactor devm_regulator_get* APIs
The implementation of devm_regulator_get, devm_regulator_get_exclusive and
devm_regulator_get_optional are almost the same.
Introduce _devm_regulator_get helper function and refactor the code.
Also move devm_regulator_get_exclusive to proper place, put it after
regulator_get_exclusive() function.
Signed-off-by: Axel Lin <axel.lin@...ics.com>
---
drivers/regulator/core.c | 127 +++++++++++++++++++++++------------------------
1 file changed, 62 insertions(+), 65 deletions(-)
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index a01b8b3..39e550a 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -1334,6 +1334,50 @@ out:
return regulator;
}
+enum {
+ NORMAL_GET,
+ EXCLUSIVE_GET,
+ OPTIONAL_GET,
+};
+
+static void devm_regulator_release(struct device *dev, void *res)
+{
+ regulator_put(*(struct regulator **)res);
+}
+
+static struct regulator *_devm_regulator_get(struct device *dev, const char *id,
+ int get_type)
+{
+ struct regulator **ptr, *regulator;
+
+ ptr = devres_alloc(devm_regulator_release, sizeof(*ptr), GFP_KERNEL);
+ if (!ptr)
+ return ERR_PTR(-ENOMEM);
+
+ switch (get_type) {
+ case NORMAL_GET:
+ regulator = regulator_get(dev, id);
+ break;
+ case EXCLUSIVE_GET:
+ regulator = regulator_get_exclusive(dev, id);
+ break;
+ case OPTIONAL_GET:
+ regulator = regulator_get_optional(dev, id);
+ break;
+ default:
+ regulator = ERR_PTR(-EINVAL);
+ }
+
+ if (!IS_ERR(regulator)) {
+ *ptr = regulator;
+ devres_add(dev, ptr);
+ } else {
+ devres_free(ptr);
+ }
+
+ return regulator;
+}
+
/**
* regulator_get - lookup and obtain a reference to a regulator.
* @dev: device for regulator "consumer"
@@ -1353,11 +1397,6 @@ struct regulator *regulator_get(struct device *dev, const char *id)
}
EXPORT_SYMBOL_GPL(regulator_get);
-static void devm_regulator_release(struct device *dev, void *res)
-{
- regulator_put(*(struct regulator **)res);
-}
-
/**
* devm_regulator_get - Resource managed regulator_get()
* @dev: device for regulator "consumer"
@@ -1369,21 +1408,7 @@ static void devm_regulator_release(struct device *dev, void *res)
*/
struct regulator *devm_regulator_get(struct device *dev, const char *id)
{
- struct regulator **ptr, *regulator;
-
- ptr = devres_alloc(devm_regulator_release, sizeof(*ptr), GFP_KERNEL);
- if (!ptr)
- return ERR_PTR(-ENOMEM);
-
- regulator = regulator_get(dev, id);
- if (!IS_ERR(regulator)) {
- *ptr = regulator;
- devres_add(dev, ptr);
- } else {
- devres_free(ptr);
- }
-
- return regulator;
+ return _devm_regulator_get(dev, id, NORMAL_GET);
}
EXPORT_SYMBOL_GPL(devm_regulator_get);
@@ -1415,6 +1440,22 @@ struct regulator *regulator_get_exclusive(struct device *dev, const char *id)
EXPORT_SYMBOL_GPL(regulator_get_exclusive);
/**
+ * devm_regulator_get_exclusive - Resource managed regulator_get_exclusive()
+ * @dev: device for regulator "consumer"
+ * @id: Supply name or regulator ID.
+ *
+ * Managed regulator_get_exclusive(). Regulators returned from this function
+ * are automatically regulator_put() on driver detach. See regulator_get() for
+ * more information.
+ */
+struct regulator *devm_regulator_get_exclusive(struct device *dev,
+ const char *id)
+{
+ return _devm_regulator_get(dev, id, EXCLUSIVE_GET);
+}
+EXPORT_SYMBOL_GPL(devm_regulator_get_exclusive);
+
+/**
* regulator_get_optional - obtain optional access to a regulator.
* @dev: device for regulator "consumer"
* @id: Supply name or regulator ID.
@@ -1455,21 +1496,7 @@ EXPORT_SYMBOL_GPL(regulator_get_optional);
struct regulator *devm_regulator_get_optional(struct device *dev,
const char *id)
{
- struct regulator **ptr, *regulator;
-
- ptr = devres_alloc(devm_regulator_release, sizeof(*ptr), GFP_KERNEL);
- if (!ptr)
- return ERR_PTR(-ENOMEM);
-
- regulator = regulator_get_optional(dev, id);
- if (!IS_ERR(regulator)) {
- *ptr = regulator;
- devres_add(dev, ptr);
- } else {
- devres_free(ptr);
- }
-
- return regulator;
+ return _devm_regulator_get(dev, id, OPTIONAL_GET);
}
EXPORT_SYMBOL_GPL(devm_regulator_get_optional);
@@ -1499,36 +1526,6 @@ static void _regulator_put(struct regulator *regulator)
}
/**
- * devm_regulator_get_exclusive - Resource managed regulator_get_exclusive()
- * @dev: device for regulator "consumer"
- * @id: Supply name or regulator ID.
- *
- * Managed regulator_get_exclusive(). Regulators returned from this function
- * are automatically regulator_put() on driver detach. See regulator_get() for
- * more information.
- */
-struct regulator *devm_regulator_get_exclusive(struct device *dev,
- const char *id)
-{
- struct regulator **ptr, *regulator;
-
- ptr = devres_alloc(devm_regulator_release, sizeof(*ptr), GFP_KERNEL);
- if (!ptr)
- return ERR_PTR(-ENOMEM);
-
- regulator = _regulator_get(dev, id, 1);
- if (!IS_ERR(regulator)) {
- *ptr = regulator;
- devres_add(dev, ptr);
- } else {
- devres_free(ptr);
- }
-
- return regulator;
-}
-EXPORT_SYMBOL_GPL(devm_regulator_get_exclusive);
-
-/**
* regulator_put - "free" the regulator source
* @regulator: regulator source
*
--
1.8.1.2
--
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