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844af950 AL |
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> | |
44b6b766 | 21 | #include <uapi/linux/wmi.h> |
844af950 AL |
22 | |
23 | struct wmi_device { | |
24 | struct device dev; | |
d4fc91ad | 25 | |
fd70da6a DHV |
26 | /* True for data blocks implementing the Set Control Method */ |
27 | bool setable; | |
844af950 AL |
28 | }; |
29 | ||
722c856d ML |
30 | /* evaluate the ACPI method associated with this device */ |
31 | extern 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 | ||
56a37025 AL |
36 | /* Caller must kfree the result. */ |
37 | extern union acpi_object *wmidev_block_query(struct wmi_device *wdev, | |
38 | u8 instance); | |
39 | ||
44b6b766 ML |
40 | extern int set_required_buffer_size(struct wmi_device *wdev, u64 length); |
41 | ||
844af950 AL |
42 | struct wmi_device_id { |
43 | const char *guid_string; | |
44 | }; | |
45 | ||
46 | struct 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); | |
1686f544 | 52 | void (*notify)(struct wmi_device *device, union acpi_object *data); |
44b6b766 ML |
53 | long (*filter_callback)(struct wmi_device *wdev, unsigned int cmd, |
54 | struct wmi_ioctl_buffer *arg); | |
844af950 AL |
55 | }; |
56 | ||
57 | extern int __must_check __wmi_driver_register(struct wmi_driver *driver, | |
58 | struct module *owner); | |
59 | extern 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 |