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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/i2c/i2c-sensor-vid.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/i2c/i2c-sensor-vid.c')
-rw-r--r--drivers/i2c/i2c-sensor-vid.c98
1 files changed, 98 insertions, 0 deletions
diff --git a/drivers/i2c/i2c-sensor-vid.c b/drivers/i2c/i2c-sensor-vid.c
new file mode 100644
index 000000000000..922e22f054bb
--- /dev/null
+++ b/drivers/i2c/i2c-sensor-vid.c
@@ -0,0 +1,98 @@
1/*
2 i2c-sensor-vid.c - Part of lm_sensors, Linux kernel modules for hardware
3 monitoring
4
5 Copyright (c) 2004 Rudolf Marek <r.marek@sh.cvut.cz>
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20*/
21
22#include <linux/config.h>
23#include <linux/module.h>
24#include <linux/kernel.h>
25
26struct vrm_model {
27 u8 vendor;
28 u8 eff_family;
29 u8 eff_model;
30 int vrm_type;
31};
32
33#define ANY 0xFF
34
35#ifdef CONFIG_X86
36
37static struct vrm_model vrm_models[] = {
38 {X86_VENDOR_AMD, 0x6, ANY, 90}, /* Athlon Duron etc */
39 {X86_VENDOR_AMD, 0xF, ANY, 24}, /* Athlon 64, Opteron */
40 {X86_VENDOR_INTEL, 0x6, 0x9, 85}, /* 0.13um too */
41 {X86_VENDOR_INTEL, 0x6, 0xB, 85}, /* 0xB Tualatin */
42 {X86_VENDOR_INTEL, 0x6, ANY, 82}, /* any P6 */
43 {X86_VENDOR_INTEL, 0x7, ANY, 0}, /* Itanium */
44 {X86_VENDOR_INTEL, 0xF, 0x3, 100}, /* P4 Prescott */
45 {X86_VENDOR_INTEL, 0xF, ANY, 90}, /* P4 before Prescott */
46 {X86_VENDOR_INTEL, 0x10,ANY, 0}, /* Itanium 2 */
47 {X86_VENDOR_UNKNOWN, ANY, ANY, 0} /* stop here */
48 };
49
50static int find_vrm(u8 eff_family, u8 eff_model, u8 vendor)
51{
52 int i = 0;
53
54 while (vrm_models[i].vendor!=X86_VENDOR_UNKNOWN) {
55 if (vrm_models[i].vendor==vendor)
56 if ((vrm_models[i].eff_family==eff_family)&& \
57 ((vrm_models[i].eff_model==eff_model)|| \
58 (vrm_models[i].eff_model==ANY)))
59 return vrm_models[i].vrm_type;
60 i++;
61 }
62
63 return 0;
64}
65
66int i2c_which_vrm(void)
67{
68 struct cpuinfo_x86 *c = cpu_data;
69 u32 eax;
70 u8 eff_family, eff_model;
71 int vrm_ret;
72
73 if (c->x86 < 6) return 0; /* any CPU with familly lower than 6
74 dont have VID and/or CPUID */
75 eax = cpuid_eax(1);
76 eff_family = ((eax & 0x00000F00)>>8);
77 eff_model = ((eax & 0x000000F0)>>4);
78 if (eff_family == 0xF) { /* use extended model & family */
79 eff_family += ((eax & 0x00F00000)>>20);
80 eff_model += ((eax & 0x000F0000)>>16)<<4;
81 }
82 vrm_ret = find_vrm(eff_family,eff_model,c->x86_vendor);
83 if (vrm_ret == 0)
84 printk(KERN_INFO "i2c-sensor.o: Unknown VRM version of your"
85 " x86 CPU\n");
86 return vrm_ret;
87}
88
89/* and now for something completely different for Non-x86 world*/
90#else
91int i2c_which_vrm(void)
92{
93 printk(KERN_INFO "i2c-sensor.o: Unknown VRM version of your CPU\n");
94 return 0;
95}
96#endif
97
98EXPORT_SYMBOL(i2c_which_vrm);