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enum extcon_cable_name {
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EXTCON_TA, /* Travel Adaptor */
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EXTCON_TA, /* Travel Adaptor */
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EXTCON_FAST_CHARGER,
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EXTCON_SLOW_CHARGER,
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EXTCON_CHARGE_DOWNSTREAM, /* Charging an external device */
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EXTCON_CHARGE_DOWNSTREAM, /* Charging an external device */
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* struct extcon_dev - An extcon device represents one external connector.
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* @name: The name of this extcon device. Parent device name is used
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* @name: The name of this extcon device. Parent device name is
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* @supported_cable: Array of supported cable names ending with NULL.
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* If supported_cable is NULL, cable name related APIs
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* be attached simulataneously. {0x7, 0} is equivalent to
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* {0x3, 0x6, 0x5, 0}. If it is {0xFFFFFFFF, 0}, there
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* can be no simultaneous connections.
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* @print_name: An optional callback to override the method to print the
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* name of the extcon device.
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* @print_name: An optional callback to override the method to print the
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* name of the extcon device.
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* @print_state: An optional callback to override the method to print the
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* status of the extcon device.
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* @dev: Device of this extcon. Do not provide at register-time.
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* @state: Attach/detach state of this extcon. Do not provide at
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* @nh: Notifier for the state change events from this extcon
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* @entry: To support list of extcon devices so that users can search
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* for extcon devices based on the extcon name.
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* status of the extcon device.
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* @dev: Device of this extcon.
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* @state: Attach/detach state of this extcon. Do not provide at
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* @nh: Notifier for the state change events from this extcon
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* @entry: To support list of extcon devices so that users can search
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* for extcon devices based on the extcon name.
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* @max_supported: Internal value to store the number of cables.
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* @extcon_dev_type: Device_type struct to provide attribute_groups
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* customized for each extcon device.
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* @cables: Sysfs subdirectories. Each represents one cable.
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* @cables: Sysfs subdirectories. Each represents one cable.
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* In most cases, users only need to provide "User initializing data" of
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* this struct when registering an extcon. In some exceptional cases,
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* are overwritten by register function.
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struct extcon_dev {
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/* --- Optional user initializing data --- */
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/* Optional user initializing data */
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const char **supported_cable;
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const u32 *mutually_exclusive;
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const u32 *mutually_exclusive;
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/* --- Optional callbacks to override class functions --- */
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/* Optional callbacks to override class functions */
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ssize_t (*print_name)(struct extcon_dev *edev, char *buf);
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ssize_t (*print_state)(struct extcon_dev *edev, char *buf);
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/* --- Internal data. Please do not set. --- */
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/* Internal data. Please do not set. */
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struct raw_notifier_head nh;
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struct list_head entry;
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spinlock_t lock; /* could be called by irq handler */
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int max_supported;
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spinlock_t lock; /* could be called by irq handler */
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/* /sys/class/extcon/.../cable.n/... */
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struct device_type extcon_dev_type;
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struct extcon_cable *cables;
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/* /sys/class/extcon/.../mutually_exclusive/... */
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struct attribute_group attr_g_muex;
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struct attribute **attrs_muex;
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* struct extcon_cable - An internal data for each cable of extcon device.
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* @edev: The extcon device
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* struct extcon_cable - An internal data for each cable of extcon device.
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* @edev: The extcon device
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* @cable_index: Index of this cable in the edev
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* @attr_g: Attribute group for the cable
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* @attr_name: "name" sysfs entry
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* @attr_state: "state" sysfs entry
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* @attrs: Array pointing to attr_name and attr_state for attr_g
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* @attr_g: Attribute group for the cable
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* @attr_name: "name" sysfs entry
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* @attr_state: "state" sysfs entry
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* @attrs: Array pointing to attr_name and attr_state for attr_g
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struct extcon_cable {
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struct extcon_dev *edev;
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* struct extcon_specific_cable_nb - An internal data for
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* extcon_register_interest().
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* @internal_nb: a notifier block bridging extcon notifier and cable notifier.
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* @user_nb: user provided notifier block for events from a specific cable.
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* extcon_register_interest().
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* @internal_nb: A notifier block bridging extcon notifier
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* and cable notifier.
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* @user_nb: user provided notifier block for events from
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* @cable_index: the target cable.
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* @edev: the target extcon device.
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* @edev: the target extcon device.
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* @previous_value: the saved previous event value.
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struct extcon_specific_cable_nb {
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* Following APIs are for notifiers or configurations.
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* Notifiers are the external port and connection devices.
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extern int extcon_dev_register(struct extcon_dev *edev, struct device *dev);
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extern int extcon_dev_register(struct extcon_dev *edev);
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extern void extcon_dev_unregister(struct extcon_dev *edev);
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extern struct extcon_dev *extcon_get_extcon_dev(const char *extcon_name);
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extern int extcon_unregister_notifier(struct extcon_dev *edev,
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struct notifier_block *nb);
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#else /* CONFIG_EXTCON */
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static inline int extcon_dev_register(struct extcon_dev *edev,
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static inline int extcon_dev_register(struct extcon_dev *edev)