[PATCH] hwmon: hwmon vs i2c, second round (07/11)

The only part left in i2c-sensor is the VRM/VRD/VID handling code.
This is in no way related to i2c, so it doesn't belong there. Move
the code to hwmon, where it belongs.

Note that not all hardware monitoring drivers do VRM/VRD/VID
operations, so less drivers depend on hwmon-vid than there were
depending on i2c-sensor.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 103 insertions, 0 deletions

diff --git a/drivers/hwmon/hwmon-vid.c b/drivers/hwmon/hwmon-vid.c
new file mode 100644
index 000000000000..ce475c93f836
--- /dev/null
+++ b/drivers/hwmon/hwmon-vid.c
@@ -0,0 +1,103 @@
+/*
+    hwmon-vid.c - VID/VRM/VRD voltage conversions
+
+    Copyright (c) 2004 Rudolf Marek <r.marek@sh.cvut.cz>
+
+    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.
+*/
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/hwmon-vid.h>
+
+struct vrm_model {
+        u8 vendor;
+        u8 eff_family;
+        u8 eff_model;
+        int vrm_type;
+};
+
+#define ANY 0xFF
+
+#ifdef CONFIG_X86
+
+static struct vrm_model vrm_models[] = {
+        {X86_VENDOR_AMD, 0x6, ANY, 90},         /* Athlon Duron etc */
+        {X86_VENDOR_AMD, 0xF, ANY, 24},         /* Athlon 64, Opteron */
+        {X86_VENDOR_INTEL, 0x6, 0x9, 85},       /* 0.13um too */
+        {X86_VENDOR_INTEL, 0x6, 0xB, 85},       /* 0xB Tualatin */
+        {X86_VENDOR_INTEL, 0x6, ANY, 82},       /* any P6 */
+        {X86_VENDOR_INTEL, 0x7, ANY, 0},        /* Itanium */
+        {X86_VENDOR_INTEL, 0xF, 0x3, 100},      /* P4 Prescott */
+        {X86_VENDOR_INTEL, 0xF, ANY, 90},       /* P4 before Prescott */
+        {X86_VENDOR_INTEL, 0x10,ANY, 0},        /* Itanium 2 */
+        {X86_VENDOR_UNKNOWN, ANY, ANY, 0}       /* stop here */
+        };
+
+static int find_vrm(u8 eff_family, u8 eff_model, u8 vendor)
+{
+        int i = 0;
+
+        while (vrm_models[i].vendor!=X86_VENDOR_UNKNOWN) {
+                if (vrm_models[i].vendor==vendor)
+                        if ((vrm_models[i].eff_family==eff_family)&& \
+                        ((vrm_models[i].eff_model==eff_model)|| \
+                        (vrm_models[i].eff_model==ANY)))
+                                return vrm_models[i].vrm_type;
+                i++;
+        }
+
+        return 0;
+}
+
+int vid_which_vrm(void)
+{
+        struct cpuinfo_x86 *c = cpu_data;
+        u32 eax;
+        u8 eff_family, eff_model;
+        int vrm_ret;
+
+        if (c->x86 < 6) return 0;       /* any CPU with familly lower than 6
+                                        dont have VID and/or CPUID */
+        eax = cpuid_eax(1);
+        eff_family = ((eax & 0x00000F00)>>8);
+        eff_model  = ((eax & 0x000000F0)>>4);
+        if (eff_family == 0xF) {        /* use extended model & family */
+                eff_family += ((eax & 0x00F00000)>>20);
+                eff_model += ((eax & 0x000F0000)>>16)<<4;
+        }
+        vrm_ret = find_vrm(eff_family,eff_model,c->x86_vendor);
+        if (vrm_ret == 0)
+                printk(KERN_INFO "hwmon-vid: Unknown VRM version of your"
+                " x86 CPU\n");
+        return vrm_ret;
+}
+
+/* and now for something completely different for Non-x86 world*/
+#else
+int vid_which_vrm(void)
+{
+        printk(KERN_INFO "hwmon-vid: Unknown VRM version of your CPU\n");
+        return 0;
+}
+#endif
+
+EXPORT_SYMBOL(vid_which_vrm);
+
+MODULE_AUTHOR("Rudolf Marek <r.marek@sh.cvut.cz>");
+
+MODULE_DESCRIPTION("hwmon-vid driver");
+MODULE_LICENSE("GPL");