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 <linux/mod_devicetable.h> 22 #include <uapi/linux/wmi.h> 23 24 struct wmi_device { 25 struct device dev; 26 27 /* True for data blocks implementing the Set Control Method */ 28 bool setable; 29 }; 30 31 /* evaluate the ACPI method associated with this device */ 32 extern acpi_status wmidev_evaluate_method(struct wmi_device *wdev, 33 u8 instance, u32 method_id, 34 const struct acpi_buffer *in, 35 struct acpi_buffer *out); 36 37 /* Caller must kfree the result. */ 38 extern union acpi_object *wmidev_block_query(struct wmi_device *wdev, 39 u8 instance); 40 41 extern int set_required_buffer_size(struct wmi_device *wdev, u64 length); 42 43 struct wmi_driver { 44 struct device_driver driver; 45 const struct wmi_device_id *id_table; 46 47 int (*probe)(struct wmi_device *wdev); 48 int (*remove)(struct wmi_device *wdev); 49 void (*notify)(struct wmi_device *device, union acpi_object *data); 50 long (*filter_callback)(struct wmi_device *wdev, unsigned int cmd, 51 struct wmi_ioctl_buffer *arg); 52 }; 53 54 extern int __must_check __wmi_driver_register(struct wmi_driver *driver, 55 struct module *owner); 56 extern void wmi_driver_unregister(struct wmi_driver *driver); 57 #define wmi_driver_register(driver) __wmi_driver_register((driver), THIS_MODULE) 58 59 #define module_wmi_driver(__wmi_driver) \ 60 module_driver(__wmi_driver, wmi_driver_register, \ 61 wmi_driver_unregister) 62 63 #endif 64