diff options
Diffstat (limited to 'include/linux/i2c-vid.h')
-rw-r--r-- | include/linux/i2c-vid.h | 111 |
1 files changed, 0 insertions, 111 deletions
diff --git a/include/linux/i2c-vid.h b/include/linux/i2c-vid.h deleted file mode 100644 index 41d0635e0ba9..000000000000 --- a/include/linux/i2c-vid.h +++ /dev/null | |||
@@ -1,111 +0,0 @@ | |||
1 | /* | ||
2 | i2c-vid.h - Part of lm_sensors, Linux kernel modules for hardware | ||
3 | monitoring | ||
4 | Copyright (c) 2002 Mark D. Studebaker <mdsxyz123@yahoo.com> | ||
5 | With assistance from Trent Piepho <xyzzy@speakeasy.org> | ||
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 | /* | ||
23 | This file contains common code for decoding VID pins. | ||
24 | This file is #included in various chip drivers in this directory. | ||
25 | As the user is unlikely to load more than one driver which | ||
26 | includes this code we don't worry about the wasted space. | ||
27 | Reference: VRM x.y DC-DC Converter Design Guidelines, | ||
28 | available at http://developer.intel.com | ||
29 | */ | ||
30 | |||
31 | /* | ||
32 | AMD Opteron processors don't follow the Intel VRM spec. | ||
33 | I'm going to "make up" 2.4 as the VRM spec for the Opterons. | ||
34 | No good reason just a mnemonic for the 24x Opteron processor | ||
35 | series | ||
36 | |||
37 | Opteron VID encoding is: | ||
38 | |||
39 | 00000 = 1.550 V | ||
40 | 00001 = 1.525 V | ||
41 | . . . . | ||
42 | 11110 = 0.800 V | ||
43 | 11111 = 0.000 V (off) | ||
44 | */ | ||
45 | |||
46 | /* | ||
47 | Legal val values 0x00 - 0x1f; except for VRD 10.0, 0x00 - 0x3f. | ||
48 | vrm is the Intel VRM document version. | ||
49 | Note: vrm version is scaled by 10 and the return value is scaled by 1000 | ||
50 | to avoid floating point in the kernel. | ||
51 | */ | ||
52 | |||
53 | int i2c_which_vrm(void); | ||
54 | |||
55 | #define DEFAULT_VRM 82 | ||
56 | |||
57 | static inline int vid_from_reg(int val, int vrm) | ||
58 | { | ||
59 | int vid; | ||
60 | |||
61 | switch(vrm) { | ||
62 | |||
63 | case 0: | ||
64 | return 0; | ||
65 | |||
66 | case 100: /* VRD 10.0 */ | ||
67 | if((val & 0x1f) == 0x1f) | ||
68 | return 0; | ||
69 | if((val & 0x1f) <= 0x09 || val == 0x0a) | ||
70 | vid = 10875 - (val & 0x1f) * 250; | ||
71 | else | ||
72 | vid = 18625 - (val & 0x1f) * 250; | ||
73 | if(val & 0x20) | ||
74 | vid -= 125; | ||
75 | vid /= 10; /* only return 3 dec. places for now */ | ||
76 | return vid; | ||
77 | |||
78 | case 24: /* Opteron processor */ | ||
79 | return(val == 0x1f ? 0 : 1550 - val * 25); | ||
80 | |||
81 | case 91: /* VRM 9.1 */ | ||
82 | case 90: /* VRM 9.0 */ | ||
83 | return(val == 0x1f ? 0 : | ||
84 | 1850 - val * 25); | ||
85 | |||
86 | case 85: /* VRM 8.5 */ | ||
87 | return((val & 0x10 ? 25 : 0) + | ||
88 | ((val & 0x0f) > 0x04 ? 2050 : 1250) - | ||
89 | ((val & 0x0f) * 50)); | ||
90 | |||
91 | case 84: /* VRM 8.4 */ | ||
92 | val &= 0x0f; | ||
93 | /* fall through */ | ||
94 | default: /* VRM 8.2 */ | ||
95 | return(val == 0x1f ? 0 : | ||
96 | val & 0x10 ? 5100 - (val) * 100 : | ||
97 | 2050 - (val) * 50); | ||
98 | } | ||
99 | } | ||
100 | |||
101 | static inline int vid_to_reg(int val, int vrm) | ||
102 | { | ||
103 | switch (vrm) { | ||
104 | case 91: /* VRM 9.1 */ | ||
105 | case 90: /* VRM 9.0 */ | ||
106 | return ((val >= 1100) && (val <= 1850) ? | ||
107 | ((18499 - val * 10) / 25 + 5) / 10 : -1); | ||
108 | default: | ||
109 | return -1; | ||
110 | } | ||
111 | } | ||