Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1/*
2 * wmi.h - ACPI WMI interface
3 *
4 * Copyright (c) 2015 Andrew Lutomirski
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
14 */
15
16#ifndef _LINUX_WMI_H
17#define _LINUX_WMI_H
18
19#include <linux/device.h>
20#include <linux/acpi.h>
21#include <uapi/linux/wmi.h>
22
23struct wmi_device {
24 struct device dev;
25
26 /* True for data blocks implementing the Set Control Method */
27 bool setable;
28};
29
30/* evaluate the ACPI method associated with this device */
31extern acpi_status wmidev_evaluate_method(struct wmi_device *wdev,
32 u8 instance, u32 method_id,
33 const struct acpi_buffer *in,
34 struct acpi_buffer *out);
35
36/* Caller must kfree the result. */
37extern union acpi_object *wmidev_block_query(struct wmi_device *wdev,
38 u8 instance);
39
40extern int set_required_buffer_size(struct wmi_device *wdev, u64 length);
41
42struct wmi_device_id {
43 const char *guid_string;
44};
45
46struct wmi_driver {
47 struct device_driver driver;
48 const struct wmi_device_id *id_table;
49
50 int (*probe)(struct wmi_device *wdev);
51 int (*remove)(struct wmi_device *wdev);
52 void (*notify)(struct wmi_device *device, union acpi_object *data);
53 long (*filter_callback)(struct wmi_device *wdev, unsigned int cmd,
54 struct wmi_ioctl_buffer *arg);
55};
56
57extern int __must_check __wmi_driver_register(struct wmi_driver *driver,
58 struct module *owner);
59extern void wmi_driver_unregister(struct wmi_driver *driver);
60#define wmi_driver_register(driver) __wmi_driver_register((driver), THIS_MODULE)
61
62#define module_wmi_driver(__wmi_driver) \
63 module_driver(__wmi_driver, wmi_driver_register, \
64 wmi_driver_unregister)
65
66#endif