/* * wmi.h - ACPI WMI interface * * Copyright (c) 2015 Andrew Lutomirski * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. */ #ifndef _LINUX_WMI_H #define _LINUX_WMI_H #include <linux/device.h> #include <linux/acpi.h> #include <uapi/linux/wmi.h> struct wmi_device { struct device dev; /* True for data blocks implementing the Set Control Method */ bool setable; }; /* evaluate the ACPI method associated with this device */ extern acpi_status wmidev_evaluate_method(struct wmi_device *wdev, u8 instance, u32 method_id, const struct acpi_buffer *in, struct acpi_buffer *out); /* Caller must kfree the result. */ extern union acpi_object *wmidev_block_query(struct wmi_device *wdev, u8 instance); extern int set_required_buffer_size(struct wmi_device *wdev, u64 length); struct wmi_device_id { const char *guid_string; }; struct wmi_driver { struct device_driver driver; const struct wmi_device_id *id_table; int (*probe)(struct wmi_device *wdev); int (*remove)(struct wmi_device *wdev); void (*notify)(struct wmi_device *device, union acpi_object *data); long (*filter_callback)(struct wmi_device *wdev, unsigned int cmd, struct wmi_ioctl_buffer *arg); }; extern int __must_check __wmi_driver_register(struct wmi_driver *driver, struct module *owner); extern void wmi_driver_unregister(struct wmi_driver *driver); #define wmi_driver_register(driver) __wmi_driver_register((driver), THIS_MODULE) #define module_wmi_driver(__wmi_driver) \ module_driver(__wmi_driver, wmi_driver_register, \ wmi_driver_unregister) #endif