forked from Minki/linux
74ba9207e1
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 675 mass ave cambridge ma 02139 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 441 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190520071858.739733335@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
34 lines
862 B
C
34 lines
862 B
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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hwmon-vid.h - VID/VRM/VRD voltage conversions
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Originally part of lm_sensors
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Copyright (c) 2002 Mark D. Studebaker <mdsxyz123@yahoo.com>
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With assistance from Trent Piepho <xyzzy@speakeasy.org>
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*/
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#ifndef _LINUX_HWMON_VID_H
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#define _LINUX_HWMON_VID_H
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int vid_from_reg(int val, u8 vrm);
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u8 vid_which_vrm(void);
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/* vrm is the VRM/VRD document version multiplied by 10.
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val is in mV to avoid floating point in the kernel.
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Returned value is the 4-, 5- or 6-bit VID code.
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Note that only VRM 9.x is supported for now. */
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static inline int vid_to_reg(int val, u8 vrm)
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{
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switch (vrm) {
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case 91: /* VRM 9.1 */
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case 90: /* VRM 9.0 */
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return ((val >= 1100) && (val <= 1850) ?
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((18499 - val * 10) / 25 + 5) / 10 : -1);
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default:
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return -EINVAL;
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}
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}
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#endif /* _LINUX_HWMON_VID_H */
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