1 /*
2  *  Dell WMI descriptor driver
3  *
4  *  Copyright (c) 2017 Dell Inc.
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 
11 #ifndef _DELL_WMI_DESCRIPTOR_H_
12 #define _DELL_WMI_DESCRIPTOR_H_
13 
14 #include <linux/wmi.h>
15 
16 /* possible return values:
17  *  -ENODEV: Descriptor GUID missing from WMI bus
18  *  -EPROBE_DEFER: probing for dell-wmi-descriptor not yet run
19  *  0: valid descriptor, successfully probed
20  *  < 0: invalid descriptor, don't probe dependent devices
21  */
22 int dell_wmi_get_descriptor_valid(void);
23 
24 bool dell_wmi_get_interface_version(u32 *version);
25 bool dell_wmi_get_size(u32 *size);
26 bool dell_wmi_get_hotfix(u32 *hotfix);
27 
28 #endif
29