1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-only */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * wmi.h - ACPI WMI interface 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Copyright (c) 2015 Andrew Lutomirski 6*4882a593Smuzhiyun */ 7*4882a593Smuzhiyun 8*4882a593Smuzhiyun #ifndef _LINUX_WMI_H 9*4882a593Smuzhiyun #define _LINUX_WMI_H 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun #include <linux/device.h> 12*4882a593Smuzhiyun #include <linux/acpi.h> 13*4882a593Smuzhiyun #include <linux/mod_devicetable.h> 14*4882a593Smuzhiyun #include <uapi/linux/wmi.h> 15*4882a593Smuzhiyun 16*4882a593Smuzhiyun struct wmi_device { 17*4882a593Smuzhiyun struct device dev; 18*4882a593Smuzhiyun 19*4882a593Smuzhiyun /* True for data blocks implementing the Set Control Method */ 20*4882a593Smuzhiyun bool setable; 21*4882a593Smuzhiyun }; 22*4882a593Smuzhiyun 23*4882a593Smuzhiyun /* evaluate the ACPI method associated with this device */ 24*4882a593Smuzhiyun extern acpi_status wmidev_evaluate_method(struct wmi_device *wdev, 25*4882a593Smuzhiyun u8 instance, u32 method_id, 26*4882a593Smuzhiyun const struct acpi_buffer *in, 27*4882a593Smuzhiyun struct acpi_buffer *out); 28*4882a593Smuzhiyun 29*4882a593Smuzhiyun /* Caller must kfree the result. */ 30*4882a593Smuzhiyun extern union acpi_object *wmidev_block_query(struct wmi_device *wdev, 31*4882a593Smuzhiyun u8 instance); 32*4882a593Smuzhiyun 33*4882a593Smuzhiyun extern int set_required_buffer_size(struct wmi_device *wdev, u64 length); 34*4882a593Smuzhiyun 35*4882a593Smuzhiyun struct wmi_driver { 36*4882a593Smuzhiyun struct device_driver driver; 37*4882a593Smuzhiyun const struct wmi_device_id *id_table; 38*4882a593Smuzhiyun 39*4882a593Smuzhiyun int (*probe)(struct wmi_device *wdev, const void *context); 40*4882a593Smuzhiyun int (*remove)(struct wmi_device *wdev); 41*4882a593Smuzhiyun void (*notify)(struct wmi_device *device, union acpi_object *data); 42*4882a593Smuzhiyun long (*filter_callback)(struct wmi_device *wdev, unsigned int cmd, 43*4882a593Smuzhiyun struct wmi_ioctl_buffer *arg); 44*4882a593Smuzhiyun }; 45*4882a593Smuzhiyun 46*4882a593Smuzhiyun extern int __must_check __wmi_driver_register(struct wmi_driver *driver, 47*4882a593Smuzhiyun struct module *owner); 48*4882a593Smuzhiyun extern void wmi_driver_unregister(struct wmi_driver *driver); 49*4882a593Smuzhiyun #define wmi_driver_register(driver) __wmi_driver_register((driver), THIS_MODULE) 50*4882a593Smuzhiyun 51*4882a593Smuzhiyun #define module_wmi_driver(__wmi_driver) \ 52*4882a593Smuzhiyun module_driver(__wmi_driver, wmi_driver_register, \ 53*4882a593Smuzhiyun wmi_driver_unregister) 54*4882a593Smuzhiyun 55*4882a593Smuzhiyun #endif 56