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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869/* SPDX-License-Identifier: GPL-2.0 */#ifndef __LINUX_EXTCON_INTERNAL_H__#define __LINUX_EXTCON_INTERNAL_H__
#include <linux/extcon-provider.h>
/** * struct extcon_dev - An extcon device represents one external connector. * @name: The name of this extcon device. Parent device name is * used if NULL. * @supported_cable: Array of supported cable names ending with EXTCON_NONE. * If supported_cable is NULL, cable name related APIs * are disabled. * @mutually_exclusive: Array of mutually exclusive set of cables that cannot * be attached simultaneously. The array should be * ending with 0 or be NULL (no mutually exclusive cables). * For example, if it is {0x7, 0x30, 0}, then, * {0, 1}, {0, 1, 2}, {0, 2}, {1, 2}, or {4, 5} cannot * be attached simulataneously. {0x7, 0} is equivalent to * {0x3, 0x6, 0x5, 0}. If it is {0xFFFFFFFF, 0}, there * can be no simultaneous connections. * @dev: Device of this extcon. * @id: Unique device ID of this extcon. * @state: Attach/detach state of this extcon. Do not provide at * register-time. * @nh_all: Notifier for the state change events for all supported * external connectors from this extcon. * @nh: Notifier for the state change events from this extcon * @entry: To support list of extcon devices so that users can * search for extcon devices based on the extcon name. * @lock: Protects device state and serialises device registration * @max_supported: Internal value to store the number of cables. * @extcon_dev_type: Device_type struct to provide attribute_groups * customized for each extcon device. * @cables: Sysfs subdirectories. Each represents one cable. * * In most cases, users only need to provide "User initializing data" of * this struct when registering an extcon. In some exceptional cases, * optional callbacks may be needed. However, the values in "internal data" * are overwritten by register function. */struct extcon_dev { /* Optional user initializing data */ const char *name; const unsigned int *supported_cable; const u32 *mutually_exclusive;
/* Internal data. Please do not set. */ struct device dev; unsigned int id; struct raw_notifier_head nh_all; struct raw_notifier_head *nh; struct list_head entry; int max_supported; spinlock_t lock; /* could be called by irq handler */ u32 state;
/* /sys/class/extcon/.../cable.n/... */ struct device_type extcon_dev_type; struct extcon_cable *cables;
/* /sys/class/extcon/.../mutually_exclusive/... */ struct attribute_group attr_g_muex; struct attribute **attrs_muex; struct device_attribute *d_attrs_muex;};
#endif /* __LINUX_EXTCON_INTERNAL_H__ */