• Chanwoo Choi's avatar
    extcon: Add new extcon_register_notifier_all() to monitor all external connectors · 815429b3
    Chanwoo Choi authored
    The extcon core already provides the extcon_register_notifier() function
    in order to register the notifier block which is used to monitor
    the state change for the specific external connector such as EXTCON_USB,
    EXTCON_USB_HOST and so on. The extcon consumer uses the this function.
    
    The extcon consumer might need to monitor the all supported external
    connectors from the extcon device. In this case, The extcon consumer
    should have each notifier_block structure for each external connector.
    
    This patch adds the new extcon_register_notifier_all() function
    that extcon consumer is able to monitor the state change of all
    supported external connectors by using only one notifier_block structure.
    
    - List of new added functions:
    int extcon_register_notifier_all(struct extcon_dev *edev,
    			struct notifier_block *nb);
    int extcon_unregister_notifier_all(struct extcon_dev *edev,
    			struct notifier_block *nb);
    int devm_extcon_register_notifier_all(struct device *dev,
    			struct extcon_dev *edev, struct notifier_block *nb);
    void devm_extcon_unregister_notifier_all(struct device *dev,
    			struct extcon_dev *edev, struct notifier_block *nb);
    Suggested-by: default avatarHans de Goede <hdegoede@redhat.com>
    Signed-off-by: default avatarChanwoo Choi <cw00.choi@samsung.com>
    Tested-by: default avatarHans de Goede <hdegoede@redhat.com>
    Acked-by: default avatarHans de Goede <hdegoede@redhat.com>
    815429b3
extcon.h 13.1 KB