blob: 01c1ae27299c1f45e5b9c462b044582c507940e6 (
plain)
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
|
// SPDX-License-Identifier: GPL-2.0+
/*
* (c) 2007 Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
*/
#include <common.h>
#include "ax88796.h"
/*
* Set 1 bit data
*/
static void ax88796_bitset(u32 bit)
{
/* DATA1 */
if( bit )
EEDI_HIGH;
else
EEDI_LOW;
EECLK_LOW;
udelay(1000);
EECLK_HIGH;
udelay(1000);
EEDI_LOW;
}
/*
* Get 1 bit data
*/
static u8 ax88796_bitget(void)
{
u8 bit;
EECLK_LOW;
udelay(1000);
/* DATA */
bit = EEDO;
EECLK_HIGH;
udelay(1000);
return bit;
}
/*
* Send COMMAND to EEPROM
*/
static void ax88796_eep_cmd(u8 cmd)
{
ax88796_bitset(BIT_DUMMY);
switch(cmd){
case MAC_EEP_READ:
ax88796_bitset(1);
ax88796_bitset(1);
ax88796_bitset(0);
break;
case MAC_EEP_WRITE:
ax88796_bitset(1);
ax88796_bitset(0);
ax88796_bitset(1);
break;
case MAC_EEP_ERACE:
ax88796_bitset(1);
ax88796_bitset(1);
ax88796_bitset(1);
break;
case MAC_EEP_EWEN:
ax88796_bitset(1);
ax88796_bitset(0);
ax88796_bitset(0);
break;
case MAC_EEP_EWDS:
ax88796_bitset(1);
ax88796_bitset(0);
ax88796_bitset(0);
break;
default:
break;
}
}
static void ax88796_eep_setaddr(u16 addr)
{
int i ;
for( i = 7 ; i >= 0 ; i-- )
ax88796_bitset(addr & (1 << i));
}
/*
* Get data from EEPROM
*/
static u16 ax88796_eep_getdata(void)
{
ushort data = 0;
int i;
ax88796_bitget(); /* DUMMY */
for( i = 0 ; i < 16 ; i++ ){
data <<= 1;
data |= ax88796_bitget();
}
return data;
}
static void ax88796_mac_read(u8 *buff)
{
int i ;
u16 data;
u16 addr = 0;
for( i = 0 ; i < 3; i++ )
{
EECS_HIGH;
EEDI_LOW;
udelay(1000);
/* READ COMMAND */
ax88796_eep_cmd(MAC_EEP_READ);
/* ADDRESS */
ax88796_eep_setaddr(addr++);
/* GET DATA */
data = ax88796_eep_getdata();
*buff++ = (uchar)(data & 0xff);
*buff++ = (uchar)((data >> 8) & 0xff);
EECLK_LOW;
EEDI_LOW;
EECS_LOW;
}
}
int get_prom(u8* mac_addr, u8* base_addr)
{
u8 prom[32];
int i;
ax88796_mac_read(prom);
for (i = 0; i < 6; i++){
mac_addr[i] = prom[i];
}
return 1;
}
|
