drivers/platform/x86/dell-wmi-descriptor.h

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