1 files changed, 9 insertions, 74 deletions

diff --git a/include/linux/hwmon-vid.h b/include/linux/hwmon-vid.h
index 6d9d4f9bad58..cd4b7a042b86 100644
--- a/include/linux/hwmon-vid.h
+++ b/include/linux/hwmon-vid.h
@@ -20,83 +20,16 @@
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */
 
-/*
-    This file contains common code for decoding VID pins.
-    This file is #included in various chip drivers in this directory.
-    As the user is unlikely to load more than one driver which
-    includes this code we don't worry about the wasted space.
-    Reference: VRM x.y DC-DC Converter Design Guidelines,
-    available at http://developer.intel.com
-*/
-
-/*
-    AMD Opteron processors don't follow the Intel VRM spec.
-    I'm going to "make up" 2.4 as the VRM spec for the Opterons.
-    No good reason just a mnemonic for the 24x Opteron processor
-    series
-
-    Opteron VID encoding is:
-
-       00000  =  1.550 V
-       00001  =  1.525 V
-        . . . .
-       11110  =  0.800 V
-       11111  =  0.000 V (off)
- */
-
-/*
-    Legal val values 0x00 - 0x1f; except for VRD 10.0, 0x00 - 0x3f.
-    vrm is the Intel VRM document version.
-    Note: vrm version is scaled by 10 and the return value is scaled by 1000
-    to avoid floating point in the kernel.
-*/
+#ifndef _LINUX_HWMON_VID_H
+#define _LINUX_HWMON_VID_H
 
+int vid_from_reg(int val, int vrm);
 int vid_which_vrm(void);
 
-static inline int vid_from_reg(int val, int vrm)
-{
-        int vid;
-
-        switch(vrm) {
-
-        case  0:
-                return 0;
-
-        case 100:               /* VRD 10.0 */
-                if((val & 0x1f) == 0x1f)
-                        return 0;
-                if((val & 0x1f) <= 0x09 || val == 0x0a)
-                        vid = 10875 - (val & 0x1f) * 250;
-                else
-                        vid = 18625 - (val & 0x1f) * 250;
-                if(val & 0x20)
-                        vid -= 125;
-                vid /= 10;      /* only return 3 dec. places for now */
-                return vid;
-
-        case 24:                /* Opteron processor */
-                return(val == 0x1f ? 0 : 1550 - val * 25);
-
-        case 91:                /* VRM 9.1 */
-        case 90:                /* VRM 9.0 */
-                return(val == 0x1f ? 0 :
-                                       1850 - val * 25);
-
-        case 85:                /* VRM 8.5 */
-                return((val & 0x10  ? 25 : 0) +
-                       ((val & 0x0f) > 0x04 ? 2050 : 1250) -
-                       ((val & 0x0f) * 50));
-
-        case 84:                /* VRM 8.4 */
-                val &= 0x0f;
-                                /* fall through */
-        default:                /* VRM 8.2 */
-                return(val == 0x1f ? 0 :
-                       val & 0x10  ? 5100 - (val) * 100 :
-                                     2050 - (val) * 50);
-        }
-}
-
+/* 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, int vrm)
 {
         switch (vrm) {
@@ -108,3 +41,5 @@ static inline int vid_to_reg(int val, int vrm)
                 return -1;
         }
 }
+
+#endif /* _LINUX_HWMON_VID_H */