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authorMatthias Kaehlcke <matthias.list@kaehlcke.net>2013-08-25 19:54:13 +0400
committerMark Brown <broonie@linaro.org>2013-08-29 22:38:33 +0400
commit9efdd27678ef5e22c27c230a08a211b702768f3a (patch)
treec2a7d91b8786bdf1ac16635f02107fe99a6c4d7d /drivers/regulator
parent9e059bacecf1c46c1784cb6f6826f85629b4a1be (diff)
downloadlinux-9efdd27678ef5e22c27c230a08a211b702768f3a.tar.xz
regulator: Add devm_regulator_get_exclusive()
Add a resource managed regulator_get_exclusive() Signed-off-by: Matthias Kaehlcke <matthias@kaehlcke.net> Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'drivers/regulator')
-rw-r--r--drivers/regulator/core.c30
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index a27a5b6267dd..4b9039b43b6c 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -1494,6 +1494,36 @@ 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
*