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authorChanwoo Choi <cw00.choi@samsung.com>2014-04-24 19:46:49 +0900
committerChanwoo Choi <cw00.choi@samsung.com>2014-04-29 09:35:15 +0900
commita9af65223b41cec60cd44fa95a93d10149deb143 (patch)
tree09abb8e2360d0e092bc57360bba53092ddc48886 /include/linux/extcon.h
parentd88cc36704e7583214220a6284a9923768b01d2d (diff)
extcon: Add extcon_dev_allocate/free() to control the memory of extcon device
This patch add APIs to control the extcon device on extcon provider driver. The extcon_dev_allocate() allocates the memory of extcon device and initializes supported cables. And then extcon_dev_free() decrement the reference of the device of extcon device and free the memory of the extcon device. This APIs must need to implement devm_extcon_dev_allocate()/free() APIs. Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> Reviewed-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'include/linux/extcon.h')
-rw-r--r--include/linux/extcon.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/extcon.h b/include/linux/extcon.h
index 548447be2d8f..15361a2f2f19 100644
--- a/include/linux/extcon.h
+++ b/include/linux/extcon.h
@@ -192,6 +192,12 @@ extern void devm_extcon_dev_unregister(struct device *dev,
extern struct extcon_dev *extcon_get_extcon_dev(const char *extcon_name);
/*
+ * Following APIs control the memory of extcon device.
+ */
+extern struct extcon_dev *extcon_dev_allocate(const char **cables);
+extern void extcon_dev_free(struct extcon_dev *edev);
+
+/*
* get/set/update_state access the 32b encoded state value, which represents
* states of all possible cables of the multistate port. For example, if one
* calls extcon_set_state(edev, 0x7), it may mean that all the three cables
@@ -267,6 +273,13 @@ static inline int devm_extcon_dev_register(struct device *dev,
static inline void devm_extcon_dev_unregister(struct device *dev,
struct extcon_dev *edev) { }
+static inline struct extcon_dev *extcon_dev_allocate(const char **cables)
+{
+ return ERR_PTR(-ENOSYS);
+}
+
+static inline void extcon_dev_free(struct extcon_dev *edev) { }
+
static inline u32 extcon_get_state(struct extcon_dev *edev)
{
return 0;