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authorStephen Warren <swarren@nvidia.com>2012-04-16 10:51:00 -0600
committerLinus Walleij <linus.walleij@linaro.org>2012-04-18 13:53:13 +0200
commit6d4ca1fb467932773da7b808c52f3d7ef4461ba0 (patch)
tree6e2055564dc75b2c44a3a41daf6ebfcfce326617 /include/linux/pinctrl
parent2aeefe0233174015aef19dc06aac02a1119a44be (diff)
pinctrl: implement devm_pinctrl_get()/put()
These functions allow the driver core to automatically clean up any allocations made by drivers, thus leading to simplified drivers. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'include/linux/pinctrl')
-rw-r--r--include/linux/pinctrl/consumer.h44
1 files changed, 44 insertions, 0 deletions
diff --git a/include/linux/pinctrl/consumer.h b/include/linux/pinctrl/consumer.h
index 191e72688481..6dd96fb45482 100644
--- a/include/linux/pinctrl/consumer.h
+++ b/include/linux/pinctrl/consumer.h
@@ -36,6 +36,9 @@ extern struct pinctrl_state * __must_check pinctrl_lookup_state(
const char *name);
extern int pinctrl_select_state(struct pinctrl *p, struct pinctrl_state *s);
+extern struct pinctrl * __must_check devm_pinctrl_get(struct device *dev);
+extern void devm_pinctrl_put(struct pinctrl *p);
+
#else /* !CONFIG_PINCTRL */
static inline int pinctrl_request_gpio(unsigned gpio)
@@ -79,6 +82,15 @@ static inline int pinctrl_select_state(struct pinctrl *p,
return 0;
}
+static inline struct pinctrl * __must_check devm_pinctrl_get(struct device *dev)
+{
+ return NULL;
+}
+
+static inline void devm_pinctrl_put(struct pinctrl *p)
+{
+}
+
#endif /* CONFIG_PINCTRL */
static inline struct pinctrl * __must_check pinctrl_get_select(
@@ -113,6 +125,38 @@ static inline struct pinctrl * __must_check pinctrl_get_select_default(
return pinctrl_get_select(dev, PINCTRL_STATE_DEFAULT);
}
+static inline struct pinctrl * __must_check devm_pinctrl_get_select(
+ struct device *dev, const char *name)
+{
+ struct pinctrl *p;
+ struct pinctrl_state *s;
+ int ret;
+
+ p = devm_pinctrl_get(dev);
+ if (IS_ERR(p))
+ return p;
+
+ s = pinctrl_lookup_state(p, name);
+ if (IS_ERR(s)) {
+ devm_pinctrl_put(p);
+ return ERR_PTR(PTR_ERR(s));
+ }
+
+ ret = pinctrl_select_state(p, s);
+ if (ret < 0) {
+ devm_pinctrl_put(p);
+ return ERR_PTR(ret);
+ }
+
+ return p;
+}
+
+static inline struct pinctrl * __must_check devm_pinctrl_get_select_default(
+ struct device *dev)
+{
+ return devm_pinctrl_get_select(dev, PINCTRL_STATE_DEFAULT);
+}
+
#ifdef CONFIG_PINCONF
extern int pin_config_get(const char *dev_name, const char *name,