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authorAxel Lin <axel.lin@ingics.com>2013-09-01 12:24:17 +0800
committerMark Brown <broonie@linaro.org>2013-09-17 00:28:44 +0100
commitcee8e355942c01f408bddf8a53596be1dff7a86b (patch)
treec79ffdbb55100116c7efd41e0daed91e54fa299e /drivers/regulator/core.c
parentcb2e45e31615bc37b31b44fc257042a860ce82b8 (diff)
downloadblackbird-op-linux-cee8e355942c01f408bddf8a53596be1dff7a86b.tar.gz
blackbird-op-linux-cee8e355942c01f408bddf8a53596be1dff7a86b.zip
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@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'drivers/regulator/core.c')
-rw-r--r--drivers/regulator/core.c127
1 files changed, 62 insertions, 65 deletions
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 85e8cbed1cbc..388397bb3192 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
*
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