1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
|
/*
it8705.c - A user-space library to access the it8705 chip.
Copyright (c) 2006 Andrew Calkin <calkina@geexbox.org>
Copyright (c) 2005 Richard Taylor <richard@artaylor.co.uk>
Heavily based on code for accessing/initializing it8712/it8705
written by
(C) Copyright 2004 Wojtek Kaniewski <wojtekka@toxygen.net>
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 <sys/io.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <getopt.h>
#include <unistd.h>
#include <time.h>
#include "digitools.h"
#include "i2c-dev.h"
#include "it8705.h"
extern unsigned char addr;
extern unsigned char data;
unsigned char it87_read_byte(unsigned char addr)
{
outb(addr, IT87_ACCESS_REG);
return inb(IT87_RETURN_REG);
}
unsigned char it87_read_ec_byte(unsigned char addr)
{
outb(addr, IT8705_EC_ACCESS_REG);
return inb(IT8705_EC_RETURN_REG);
}
int it87_write_ec_byte (unsigned char addr, unsigned char data)
{
outb(addr, IT8705_EC_ACCESS_REG);
outb(data, IT8705_EC_RETURN_REG);
if (it87_read_ec_byte(addr) != data)
{
#ifndef SILENT
printf("Error Writing EC addr: 0x%02X, wrote: 0x%02X, read: 0x%02X\n",
addr, data, it87_read_ec_byte(addr));
#endif
return -1;
}
return 0;
}
int it87_write_byte (unsigned char addr, unsigned char data)
{
outb(addr, IT87_ACCESS_REG);
outb(data, IT87_RETURN_REG);
if ((addr != IT8705_CFG_CTRL) && (it87_read_byte(addr) != data))
{
#ifndef SILENT
printf("Error Writing addr: 0x%02X, wrote: 0x%02X, read: 0x%02X\n",
addr, data, it87_read_byte(addr));
#endif
return -1;
}
return 0;
}
int it87_ec_port_open(void)
{
if (ioperm(IT8705_EC_ACCESS_REG, 2, 1) == -1)
{
#ifndef SILENT
printf("Error getting access\n");
#endif
exit(1);
}
else
return 0;
}
void it87_ec_port_close(void)
{
ioperm(IT8705_EC_ACCESS_REG, 2, 0);
}
int it87_open(void)
{
if (ioperm(IT87_ACCESS_REG, 2, 1) == -1)
{
#ifndef SILENT
printf("Error getting access!\n");
#endif
exit(1);
}
outb(0x87, IT87_ACCESS_REG);
outb(0x01, IT87_ACCESS_REG);
outb(0x55, IT87_ACCESS_REG);
outb(0x55, IT87_ACCESS_REG);
if (it87_read_byte(0x20) != 0x87 || it87_read_byte(0x21) != 0x05)
{
#ifndef SILENT
printf("IT8705 not found!\nIdent values are %02X%02X.\n"
"Should be 8705\n",it87_read_byte(0x20),
it87_read_byte(0x21));
#endif
exit(1);
}
return 0;
}
void it87_close(void)
{
/* To exit pnp mode we need to set bit 1 of IT8705_CFG_CTRL
bit 0 is the reset bit. This register is write only */
it87_write_byte(IT8705_CFG_CTRL, 0x02);
ioperm(IT87_ACCESS_REG, 2, 0);
}
/* Note: Returns hexified version of temperature:
Temp = 34 DegC, return will be 0x34
On error, returns 0 to fail gracefully */
char it87_get_temp(void)
{
int temp;
char temp_dec = 0;
/* Get the temperature from the IT87 */
temp=it87_read_ec_byte(IT8705_TEMP_REG1);
temp &= 0xFF;
temp_dec = ((temp / 10) << 4) & 0xf0;
temp_dec |= (temp % 10) & 0x0f;
return temp_dec;
}
void it87_ldn_set(unsigned char ldn)
{
outb(0x07,IT87_ACCESS_REG);
outb(ldn,IT87_RETURN_REG);
}
unsigned char it87_read_cir_byte(unsigned char addr)
{
return inb(IT87_CIR_DEFAULT_IOBASE + addr);
}
int it87_write_cir_byte (unsigned char addr, unsigned char data)
{
outb(data, IT87_CIR_DEFAULT_IOBASE + addr);
if (it87_read_cir_byte(addr) != data)
{
#ifndef SILENT
printf("Error Writing CIR addr: 0x%02X, wrote: 0x%02X, read: 0x%02X\n",
addr, data, it87_read_cir_byte(addr));
#endif
return -1;
}
return 0;
}
int it87_cir_port_open(void)
{
if (ioperm(IT87_CIR_DEFAULT_IOBASE, 10, 1) == -1)
{
#ifndef SILENT
printf("Error getting access!\n");
#endif
exit(1);
}
else
return 0;
}
void it87_cir_port_close(void)
{
ioperm(IT87_CIR_DEFAULT_IOBASE, 10, 0);
}
|
