Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / include / linux / hwmon-vid.h

diff --git a/kernel/include/linux/hwmon-vid.h b/kernel/include/linux/hwmon-vid.h
new file mode 100644 (file)
index 0000000..da0a680
--- /dev/null
+++ b/kernel/include/linux/hwmon-vid.h
@@ -0,0 +1,45 @@
+/*
+    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>
+
+    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.
+*/
+
+#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 */