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 /* evaluate the ACPI method associated with this device */ 30 extern acpi_status wmidev_evaluate_method(struct wmi_device *wdev, 31 u8 instance, u32 method_id, 32 const struct acpi_buffer *in, 33 struct acpi_buffer *out); 34 35 /* Caller must kfree the result. */ 36 extern union acpi_object *wmidev_block_query(struct wmi_device *wdev, 37 u8 instance); 38 39 /* Gets another device on the same bus. Caller must put_device the result. */ 40 extern struct wmi_device *wmidev_get_other_guid(struct wmi_device *wdev, 41 const char *guid_string); 42 43 struct wmi_device_id { 44 const char *guid_string; 45 }; 46 47 struct wmi_driver { 48 struct device_driver driver; 49 const struct wmi_device_id *id_table; 50 51 int (*probe)(struct wmi_device *wdev); 52 int (*remove)(struct wmi_device *wdev); 53 void (*notify)(struct wmi_device *device, union acpi_object *data); 54 }; 55 56 extern int __must_check __wmi_driver_register(struct wmi_driver *driver, 57 struct module *owner); 58 extern void wmi_driver_unregister(struct wmi_driver *driver); 59 #define wmi_driver_register(driver) __wmi_driver_register((driver), THIS_MODULE) 60 61 #define module_wmi_driver(__wmi_driver) \ 62 module_driver(__wmi_driver, wmi_driver_register, \ 63 wmi_driver_unregister) 64 65 #endif 66