[PATCH] hwmon-vid: Add support for Intel Core and Conroe

This patch adds support for two new VID codes, supporting Intel mobile Core
processors and new Conroe based platforms.

Signed-off-by: Rudolf Marek <r.marek@sh.cvut.cz>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 28 insertions, 7 deletions

diff --git a/drivers/hwmon/hwmon-vid.c b/drivers/hwmon/hwmon-vid.c
index b0fd267635bb..a6764ff00803 100644
--- a/drivers/hwmon/hwmon-vid.c
+++ b/drivers/hwmon/hwmon-vid.c
@@ -58,11 +58,20 @@
     doesn't seem to be any named specification for these. The conversion
     tables are detailed directly in the various Pentium M datasheets:
     http://www.intel.com/design/intarch/pentiumm/docs_pentiumm.htm
+
+    The 14 specification corresponds to Intel Core series. There
+    doesn't seem to be any named specification for these. The conversion
+    tables are detailed directly in the various Pentium Core datasheets:
+    http://www.intel.com/design/mobile/datashts/309221.htm
+
+    The 110 (VRM 11) specification corresponds to Intel Conroe based series.
+    http://www.intel.com/design/processor/applnots/313214.htm
 */
 
 /* vrm is the VRM/VRD document version multiplied by 10.
-   val is the 4-, 5- or 6-bit VID code.
-   Returned value is in mV to avoid floating point in the kernel. */
+   val is the 4-bit or more VID code.
+   Returned value is in mV to avoid floating point in the kernel.
+   Some VID have some bits in uV scale, this is rounded to mV */
 int vid_from_reg(int val, u8 vrm)
 {
         int vid;
@@ -70,18 +79,24 @@ int vid_from_reg(int val, u8 vrm)
         switch(vrm) {
 
         case 100:               /* VRD 10.0 */
+                /* compute in uV, round to mV */
                 val &= 0x3f;
                 if((val & 0x1f) == 0x1f)
                         return 0;
                 if((val & 0x1f) <= 0x09 || val == 0x0a)
-                        vid = 10875 - (val & 0x1f) * 250;
+                        vid = 1087500 - (val & 0x1f) * 25000;
                 else
-                        vid = 18625 - (val & 0x1f) * 250;
+                        vid = 1862500 - (val & 0x1f) * 25000;
                 if(val & 0x20)
-                        vid -= 125;
-                vid /= 10;      /* only return 3 dec. places for now */
-                return vid;
+                        vid -= 12500;
+                return((vid + 500) / 1000);
 
+        case 110:               /* Intel Conroe */
+                                /* compute in uV, round to mV */
+                val &= 0xff;
+                if(((val & 0x7e) == 0xfe) || (!(val & 0x7e)))
+                        return 0;
+                return((1600000 - (val - 2) * 6250 + 500) / 1000);
         case 24:                /* Opteron processor */
                 val &= 0x1f;
                 return(val == 0x1f ? 0 : 1550 - val * 25);
@@ -113,6 +128,10 @@ int vid_from_reg(int val, u8 vrm)
         case 13:
                 val &= 0x3f;
                 return(1708 - val * 16);
+        case 14:                /* Intel Core */
+                                /* compute in uV, round to mV */
+                val &= 0x7f;
+                return(val > 0x77 ? 0 : (1500000 - (val * 12500) + 500) / 1000);
         default:                /* report 0 for unknown */
                 printk(KERN_INFO "hwmon-vid: requested unknown VRM version\n");
                 return 0;
@@ -145,6 +164,8 @@ static struct vrm_model vrm_models[] = {
         {X86_VENDOR_INTEL, 0x6, 0x9, ANY, 13},          /* Pentium M (130 nm) */
         {X86_VENDOR_INTEL, 0x6, 0xB, ANY, 85},          /* Tualatin */
         {X86_VENDOR_INTEL, 0x6, 0xD, ANY, 13},          /* Pentium M (90 nm) */
+        {X86_VENDOR_INTEL, 0x6, 0xE, ANY, 14},          /* Intel Core (65 nm) */
+        {X86_VENDOR_INTEL, 0x6, 0xF, ANY, 110},         /* Intel Conroe */
         {X86_VENDOR_INTEL, 0x6, ANY, ANY, 82},          /* any P6 */
         {X86_VENDOR_INTEL, 0x7, ANY, ANY, 0},           /* Itanium */
         {X86_VENDOR_INTEL, 0xF, 0x0, ANY, 90},          /* P4 */