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| author | Chanwoo Choi <cw00.choi@samsung.com> | 2014-04-24 19:46:49 +0900 |
|---|---|---|
| committer | Chanwoo Choi <cw00.choi@samsung.com> | 2014-04-29 09:35:15 +0900 |
| commit | a9af65223b41cec60cd44fa95a93d10149deb143 (patch) | |
| tree | 09abb8e2360d0e092bc57360bba53092ddc48886 /include | |
| parent | d88cc36704e7583214220a6284a9923768b01d2d (diff) | |
| download | linux-a9af65223b41cec60cd44fa95a93d10149deb143.tar.bz2 | |
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')
| -rw-r--r-- | include/linux/extcon.h | 13 |
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; |