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authorChanwoo Choi <cw00.choi@samsung.com>2017-09-21 06:11:24 +0300
committerChanwoo Choi <cw00.choi@samsung.com>2017-10-23 08:07:58 +0300
commit176aa36012135d172394a928a03fb03dfecd83f9 (patch)
tree77b630eb0c9c08a4c3aaedc1552f6b47e2bbaa62 /include/linux/extcon.h
parent2bd6bf03f4c1c59381d62c61d03f6cc3fe71f66e (diff)
downloadlinux-176aa36012135d172394a928a03fb03dfecd83f9.tar.xz
extcon: Split out extcon header file for consumer and provider device
The extcon has two type of extcon devices as following. - 'extcon provider deivce' adds new extcon device and detect the state/properties of external connector. Also, it notifies the state/properties to the extcon consumer device. - 'extcon consumer device' gets the change state/properties from extcon provider device. Prior to that, include/linux/extcon.h contains all exported API for both provider and consumer device driver. To clarify the meaning of header file and to remove the wrong use-case on consumer device, this patch separates into extcon.h and extcon-provider.h. [Description for include/linux/{extcon.h|extcon-provider.h}] - extcon.h includes the extcon API and data structure for extcon consumer device driver. This header file contains the following APIs: : Register/unregister the notifier to catch the change of extcon device : Get the extcon device instance : Get the extcon device name : Get the state of each external connector : Get the property value of each external connector : Get the property capability of each external connector - extcon-provider.h includes the extcon API and data structure for extcon provider device driver. This header file contains the following APIs: : Include 'include/linux/extcon.h' : Allocate the memory for extcon device instance : Register/unregister extcon device : Set the state of each external connector : Set the property value of each external connector : Set the property capability of each external connector Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> Acked-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk> Acked-by: Chen-Yu Tsai <wens@csie.org> Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com> Acked-by: Lee Jones <lee.jones@linaro.org> Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com> Acked-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
Diffstat (limited to 'include/linux/extcon.h')
-rw-r--r--include/linux/extcon.h109
1 files changed, 5 insertions, 104 deletions
diff --git a/include/linux/extcon.h b/include/linux/extcon.h
index 744d60ca80c3..6d94e82c8ad9 100644
--- a/include/linux/extcon.h
+++ b/include/linux/extcon.h
@@ -1,5 +1,6 @@
/*
* External Connector (extcon) framework
+ * - linux/include/linux/extcon.h for extcon consumer device driver.
*
* Copyright (C) 2015 Samsung Electronics
* Author: Chanwoo Choi <cw00.choi@samsung.com>
@@ -170,61 +171,29 @@ union extcon_property_value {
int intval; /* type : integer (intval) */
};
-struct extcon_cable;
struct extcon_dev;
#if IS_ENABLED(CONFIG_EXTCON)
-
-/* Following APIs register/unregister the extcon device. */
-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);
-
-/* Following APIs allocate/free the memory of the extcon device. */
-extern struct extcon_dev *extcon_dev_allocate(const unsigned int *cable);
-extern void extcon_dev_free(struct extcon_dev *edev);
-extern struct extcon_dev *devm_extcon_dev_allocate(struct device *dev,
- const unsigned int *cable);
-extern void devm_extcon_dev_free(struct device *dev, struct extcon_dev *edev);
-
-/* Synchronize the state and property value for each external connector. */
-extern int extcon_sync(struct extcon_dev *edev, unsigned int id);
-
/*
- * Following APIs get/set the connected state of each external connector.
+ * Following APIs get the connected state of each external connector.
* The 'id' argument indicates the defined external connector.
*/
extern int extcon_get_state(struct extcon_dev *edev, unsigned int id);
-extern int extcon_set_state(struct extcon_dev *edev, unsigned int id,
- bool state);
-extern int extcon_set_state_sync(struct extcon_dev *edev, unsigned int id,
- bool state);
/*
- * Following APIs get/set the property of each external connector.
+ * Following APIs get the property of each external connector.
* The 'id' argument indicates the defined external connector
* and the 'prop' indicates the extcon property.
*
- * And extcon_get/set_property_capability() set the capability of the property
- * for each external connector. They are used to set the capability of the
+ * And extcon_get_property_capability() get the capability of the property
+ * for each external connector. They are used to get the capability of the
* property of each external connector based on the id and property.
*/
extern int extcon_get_property(struct extcon_dev *edev, unsigned int id,
unsigned int prop,
union extcon_property_value *prop_val);
-extern int extcon_set_property(struct extcon_dev *edev, unsigned int id,
- unsigned int prop,
- union extcon_property_value prop_val);
-extern int extcon_set_property_sync(struct extcon_dev *edev, unsigned int id,
- unsigned int prop,
- union extcon_property_value prop_val);
extern int extcon_get_property_capability(struct extcon_dev *edev,
unsigned int id, unsigned int prop);
-extern int extcon_set_property_capability(struct extcon_dev *edev,
- unsigned int id, unsigned int prop);
/*
* Following APIs register the notifier block in order to detect
@@ -268,79 +237,17 @@ extern struct extcon_dev *extcon_get_edev_by_phandle(struct device *dev,
extern const char *extcon_get_edev_name(struct extcon_dev *edev);
#else /* CONFIG_EXTCON */
-static inline int extcon_dev_register(struct extcon_dev *edev)
-{
- return 0;
-}
-
-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 struct extcon_dev *extcon_dev_allocate(const unsigned int *cable)
-{
- return ERR_PTR(-ENOSYS);
-}
-
-static inline void extcon_dev_free(struct extcon_dev *edev) { }
-
-static inline struct extcon_dev *devm_extcon_dev_allocate(struct device *dev,
- const unsigned int *cable)
-{
- return ERR_PTR(-ENOSYS);
-}
-
-static inline void devm_extcon_dev_free(struct extcon_dev *edev) { }
-
-
static inline int extcon_get_state(struct extcon_dev *edev, unsigned int id)
{
return 0;
}
-static inline int extcon_set_state(struct extcon_dev *edev, unsigned int id,
- bool state)
-{
- return 0;
-}
-
-static inline int extcon_set_state_sync(struct extcon_dev *edev, unsigned int id,
- bool state)
-{
- return 0;
-}
-
-static inline int extcon_sync(struct extcon_dev *edev, unsigned int id)
-{
- return 0;
-}
-
static inline int extcon_get_property(struct extcon_dev *edev, unsigned int id,
unsigned int prop,
union extcon_property_value *prop_val)
{
return 0;
}
-static inline int extcon_set_property(struct extcon_dev *edev, unsigned int id,
- unsigned int prop,
- union extcon_property_value prop_val)
-{
- return 0;
-}
-
-static inline int extcon_set_property_sync(struct extcon_dev *edev,
- unsigned int id, unsigned int prop,
- union extcon_property_value prop_val)
-{
- return 0;
-}
static inline int extcon_get_property_capability(struct extcon_dev *edev,
unsigned int id, unsigned int prop)
@@ -348,12 +255,6 @@ static inline int extcon_get_property_capability(struct extcon_dev *edev,
return 0;
}
-static inline int extcon_set_property_capability(struct extcon_dev *edev,
- unsigned int id, unsigned int prop)
-{
- return 0;
-}
-
static inline int extcon_register_notifier(struct extcon_dev *edev,
unsigned int id, struct notifier_block *nb)
{