/* SPDX-License-Identifier: GPL-2.0-or-later */

  /*

      hwmon-vid.h - VID/VRM/VRD voltage conversions
  
      Originally part of lm_sensors

      Copyright (c) 2002 Mark D. Studebaker <mdsxyz123@yahoo.com>
      With assistance from Trent Piepho <xyzzy@speakeasy.org>

  */

  #ifndef _LINUX_HWMON_VID_H
  #define _LINUX_HWMON_VID_H

  int vid_from_reg(int val, u8 vrm);
  u8 vid_which_vrm(void);

  /* vrm is the VRM/VRD document version multiplied by 10.
     val is in mV to avoid floating point in the kernel.
     Returned value is the 4-, 5- or 6-bit VID code.
     Note that only VRM 9.x is supported for now. */

  static inline int vid_to_reg(int val, u8 vrm)

  {
  	switch (vrm) {
  	case 91:		/* VRM 9.1 */
  	case 90:		/* VRM 9.0 */
  		return ((val >= 1100) && (val <= 1850) ?
  			((18499 - val * 10) / 25 + 5) / 10 : -1);
  	default:

  		return -EINVAL;

  	}
  }

  
  #endif /* _LINUX_HWMON_VID_H */