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extcon: Add resource-managed extcon register function

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Add resource-managed extcon device register function for convenience.
For example, if a extcon device is attached with new
devm_extcon_dev_register(), that extcon device is automatically
unregistered on driver detach.

Signed-off-by: Sangjung Woo <sangjung.woo@samsung.com>
[Fix bug about devm_extcon_dev_match/release() and code clean by Chanwoo Choi]
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
This commit is contained in:
Sangjung Woo
2014-04-21 19:10:08 +09:00
committed by Chanwoo Choi
parent 369afd4ba2
commit 1111244ff4
2 changed files with 82 additions and 0 deletions
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13
include/linux/extcon.h
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@@ -185,6 +185,10 @@ struct extcon_specific_cable_nb {
*/
extern int extcon_dev_register(struct extcon_dev *edev);
extern void extcon_dev_unregister(struct extcon_dev *edev);
extern int devm_extcon_dev_register(struct device *dev,
struct extcon_dev *edev);
extern void devm_extcon_dev_unregister(struct device *dev,
struct extcon_dev *edev);
extern struct extcon_dev *extcon_get_extcon_dev(const char *extcon_name);
/*
@@ -254,6 +258,15 @@ static inline int extcon_dev_register(struct extcon_dev *edev)
static inline void extcon_dev_unregister(struct extcon_dev *edev) { }
static inline int devm_extcon_dev_register(struct device *dev,
struct extcon_dev *edev)
{
return -EINVAL;
}
static inline void devm_extcon_dev_unregister(struct device *dev,
struct extcon_dev *edev) { }
static inline u32 extcon_get_state(struct extcon_dev *edev)
{
return 0;