sa1111_badge4.c
3.94 KB
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
/*
* linux/drivers/pcmcia/sa1100_badge4.c
*
* BadgePAD 4 PCMCIA specific routines
*
* Christopher Hoover <ch@hpl.hp.com>
*
* Copyright (C) 2002 Hewlett-Packard Company
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <mach/hardware.h>
#include <asm/mach-types.h>
#include <mach/badge4.h>
#include <asm/hardware/sa1111.h>
#include "sa1111_generic.h"
/*
* BadgePAD 4 Details
*
* PCM Vcc:
*
* PCM Vcc on BadgePAD 4 can be jumpered for 3v3 (short pins 1 and 3
* on JP6) or 5v0 (short pins 3 and 5 on JP6).
*
* PCM Vpp:
*
* PCM Vpp on BadgePAD 4 can be jumpered for 12v0 (short pins 4 and 6
* on JP6) or tied to PCM Vcc (short pins 2 and 4 on JP6). N.B.,
* 12v0 operation requires that the power supply actually supply 12v0
* via pin 7 of JP7.
*
* CF Vcc:
*
* CF Vcc on BadgePAD 4 can be jumpered either for 3v3 (short pins 1
* and 2 on JP10) or 5v0 (short pins 2 and 3 on JP10).
*
* Unfortunately there's no way programmatically to determine how a
* given board is jumpered. This code assumes a default jumpering
* as described below.
*
* If the defaults aren't correct, you may override them with a pcmv
* setup argument: pcmv=<pcm vcc>,<pcm vpp>,<cf vcc>. The units are
* tenths of volts; e.g. pcmv=33,120,50 indicates 3v3 PCM Vcc, 12v0
* PCM Vpp, and 5v0 CF Vcc.
*
*/
static int badge4_pcmvcc = 50; /* pins 3 and 5 jumpered on JP6 */
static int badge4_pcmvpp = 50; /* pins 2 and 4 jumpered on JP6 */
static int badge4_cfvcc = 33; /* pins 1 and 2 jumpered on JP10 */
static void complain_about_jumpering(const char *whom,
const char *supply,
int given, int wanted)
{
printk(KERN_ERR
"%s: %s %d.%dV wanted but board is jumpered for %s %d.%dV operation"
"; re-jumper the board and/or use pcmv=xx,xx,xx\n",
whom, supply,
wanted / 10, wanted % 10,
supply,
given / 10, given % 10);
}
static int
badge4_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
{
int ret;
switch (skt->nr) {
case 0:
if ((state->Vcc != 0) &&
(state->Vcc != badge4_pcmvcc)) {
complain_about_jumpering(__func__, "pcmvcc",
badge4_pcmvcc, state->Vcc);
// Apply power regardless of the jumpering.
// return -1;
}
if ((state->Vpp != 0) &&
(state->Vpp != badge4_pcmvpp)) {
complain_about_jumpering(__func__, "pcmvpp",
badge4_pcmvpp, state->Vpp);
return -1;
}
break;
case 1:
if ((state->Vcc != 0) &&
(state->Vcc != badge4_cfvcc)) {
complain_about_jumpering(__func__, "cfvcc",
badge4_cfvcc, state->Vcc);
return -1;
}
break;
default:
return -1;
}
ret = sa1111_pcmcia_configure_socket(skt, state);
if (ret == 0) {
unsigned long flags;
int need5V;
local_irq_save(flags);
need5V = ((state->Vcc == 50) || (state->Vpp == 50));
badge4_set_5V(BADGE4_5V_PCMCIA_SOCK(skt->nr), need5V);
local_irq_restore(flags);
}
return ret;
}
static struct pcmcia_low_level badge4_pcmcia_ops = {
.owner = THIS_MODULE,
.configure_socket = badge4_pcmcia_configure_socket,
.first = 0,
.nr = 2,
};
int pcmcia_badge4_init(struct device *dev)
{
int ret = -ENODEV;
if (machine_is_badge4()) {
printk(KERN_INFO
"%s: badge4_pcmvcc=%d, badge4_pcmvpp=%d, badge4_cfvcc=%d\n",
__func__,
badge4_pcmvcc, badge4_pcmvpp, badge4_cfvcc);
sa11xx_drv_pcmcia_ops(&badge4_pcmcia_ops);
ret = sa1111_pcmcia_add(dev, &badge4_pcmcia_ops,
sa11xx_drv_pcmcia_add_one);
}
return ret;
}
static int __init pcmv_setup(char *s)
{
int v[4];
s = get_options(s, ARRAY_SIZE(v), v);
if (v[0] >= 1) badge4_pcmvcc = v[1];
if (v[0] >= 2) badge4_pcmvpp = v[2];
if (v[0] >= 3) badge4_cfvcc = v[3];
return 1;
}
__setup("pcmv=", pcmv_setup);