1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-only */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Dell WMI descriptor driver 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Copyright (c) 2017 Dell Inc. 6*4882a593Smuzhiyun */ 7*4882a593Smuzhiyun 8*4882a593Smuzhiyun #ifndef _DELL_WMI_DESCRIPTOR_H_ 9*4882a593Smuzhiyun #define _DELL_WMI_DESCRIPTOR_H_ 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun #include <linux/wmi.h> 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun /* possible return values: 14*4882a593Smuzhiyun * -ENODEV: Descriptor GUID missing from WMI bus 15*4882a593Smuzhiyun * -EPROBE_DEFER: probing for dell-wmi-descriptor not yet run 16*4882a593Smuzhiyun * 0: valid descriptor, successfully probed 17*4882a593Smuzhiyun * < 0: invalid descriptor, don't probe dependent devices 18*4882a593Smuzhiyun */ 19*4882a593Smuzhiyun int dell_wmi_get_descriptor_valid(void); 20*4882a593Smuzhiyun 21*4882a593Smuzhiyun bool dell_wmi_get_interface_version(u32 *version); 22*4882a593Smuzhiyun bool dell_wmi_get_size(u32 *size); 23*4882a593Smuzhiyun bool dell_wmi_get_hotfix(u32 *hotfix); 24*4882a593Smuzhiyun 25*4882a593Smuzhiyun #endif 26