Add Intel VRD 10.0 and AMD Opteron VID support

This patch adds support for Intel VRD 10.0 and AMD Opteron VID calculations. It is based on the lm_sensors project CVS, r1.6.

Index: linux-2.6.9-rc2/include/linux/i2c-vid.h
=================================--- linux-2.6.9-rc2.orig/include/linux/i2c-vid.h 2004-09-15 22:45:16.094005498 -0400
+++ linux-2.6.9-rc2/include/linux/i2c-vid.h 2004-09-15 22:50:25.870720679 -0400
@@ -29,7 +29,22 @@
*/

/*

-    Legal val values 00 - 1F.
+    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.
@@ -41,9 +56,28 @@ int i2c_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 :

Mark M. Hoffman
[email protected]

Applied, thanks.

greg k-h