include/linux/wmi.h

   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
  22 struct wmi_device {
  23         struct device dev;
  24
  25          /* True for data blocks implementing the Set Control Method */
  26         bool setable;
  27 };
  28
  29 /* Caller must kfree the result. */
  30 extern union acpi_object *wmidev_block_query(struct wmi_device *wdev,
  31                                              u8 instance);
  32
  33 /* Gets another device on the same bus.  Caller must put_device the result. */
  34 extern struct wmi_device *wmidev_get_other_guid(struct wmi_device *wdev,
  35                                                 const char *guid_string);
  36
  37 struct wmi_device_id {
  38         const char *guid_string;
  39 };
  40
  41 struct wmi_driver {
  42         struct device_driver driver;
  43         const struct wmi_device_id *id_table;
  44
  45         int (*probe)(struct wmi_device *wdev);
  46         int (*remove)(struct wmi_device *wdev);
  47         void (*notify)(struct wmi_device *device, union acpi_object *data);
  48 };
  49
  50 extern int __must_check __wmi_driver_register(struct wmi_driver *driver,
  51                                               struct module *owner);
  52 extern void wmi_driver_unregister(struct wmi_driver *driver);
  53 #define wmi_driver_register(driver) __wmi_driver_register((driver), THIS_MODULE)
  54
  55 #define module_wmi_driver(__wmi_driver) \
  56         module_driver(__wmi_driver, wmi_driver_register, \
  57                       wmi_driver_unregister)
  58
  59 #endif