x86/dell/dell-wmi-descriptor.h

0001 /* SPDX-License-Identifier: GPL-2.0-only */
0002 /*
0003  *  Dell WMI descriptor driver
0004  *
0005  *  Copyright (c) 2017 Dell Inc.
0006  */
0007
0008 #ifndef _DELL_WMI_DESCRIPTOR_H_
0009 #define _DELL_WMI_DESCRIPTOR_H_
0010
0011 #include <linux/wmi.h>
0012
0013 /* possible return values:
0014  *  -ENODEV: Descriptor GUID missing from WMI bus
0015  *  -EPROBE_DEFER: probing for dell-wmi-descriptor not yet run
0016  *  0: valid descriptor, successfully probed
0017  *  < 0: invalid descriptor, don't probe dependent devices
0018  */
0019 int dell_wmi_get_descriptor_valid(void);
0020
0021 bool dell_wmi_get_interface_version(u32 *version);
0022 bool dell_wmi_get_size(u32 *size);
0023 bool dell_wmi_get_hotfix(u32 *hotfix);
0024
0025 #endif