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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* wmi.h - ACPI WMI interface
*
* Copyright (c) 2015 Andrew Lutomirski
*/
#ifndef _LINUX_WMI_H
#define _LINUX_WMI_H
#include <linux/device.h>
#include <linux/acpi.h>
#include <linux/mod_devicetable.h>
#include <uapi/linux/wmi.h>
struct wmi_device {
struct device dev;
/* True for data blocks implementing the Set Control Method */
bool setable;
};
/* evaluate the ACPI method associated with this device */
extern acpi_status wmidev_evaluate_method(struct wmi_device *wdev,
u8 instance, u32 method_id,
const struct acpi_buffer *in,
struct acpi_buffer *out);
/* Caller must kfree the result. */
extern union acpi_object *wmidev_block_query(struct wmi_device *wdev,
u8 instance);
extern int set_required_buffer_size(struct wmi_device *wdev, u64 length);
struct wmi_driver {
struct device_driver driver;
const struct wmi_device_id *id_table;
int (*probe)(struct wmi_device *wdev, const void *context);
int (*remove)(struct wmi_device *wdev);
void (*notify)(struct wmi_device *device, union acpi_object *data);
long (*filter_callback)(struct wmi_device *wdev, unsigned int cmd,
struct wmi_ioctl_buffer *arg);
};
extern int __must_check __wmi_driver_register(struct wmi_driver *driver,
struct module *owner);
extern void wmi_driver_unregister(struct wmi_driver *driver);
#define wmi_driver_register(driver) __wmi_driver_register((driver), THIS_MODULE)
#define module_wmi_driver(__wmi_driver) \
module_driver(__wmi_driver, wmi_driver_register, \
wmi_driver_unregister)
#endif