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
|
/*
* drivers/pcmcia/sa1100_simpad.c
*
* PCMCIA implementation routines for simpad
*
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/init.h>
#include <asm/hardware.h>
#include <asm/mach-types.h>
#include <asm/irq.h>
#include <asm/arch/simpad.h>
#include "sa1100_generic.h"
extern long get_cs3_shadow(void);
extern void set_cs3_bit(int value);
extern void clear_cs3_bit(int value);
static struct pcmcia_irqs irqs[] = {
{ 1, IRQ_GPIO_CF_CD, "CF_CD" },
};
static int simpad_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
{
clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1);
skt->irq = IRQ_GPIO_CF_IRQ;
return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
}
static void simpad_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
{
soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
/* Disable CF bus: */
//set_cs3_bit(PCMCIA_BUFF_DIS);
clear_cs3_bit(PCMCIA_RESET);
}
static void
simpad_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
struct pcmcia_state *state)
{
unsigned long levels = GPLR;
long cs3reg = get_cs3_shadow();
state->detect=((levels & GPIO_CF_CD)==0)?1:0;
state->ready=(levels & GPIO_CF_IRQ)?1:0;
state->bvd1=1; /* Not available on Simpad. */
state->bvd2=1; /* Not available on Simpad. */
state->wrprot=0; /* Not available on Simpad. */
if((cs3reg & 0x0c) == 0x0c) {
state->vs_3v=0;
state->vs_Xv=0;
} else {
state->vs_3v=1;
state->vs_Xv=0;
}
}
static int
simpad_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
const socket_state_t *state)
{
unsigned long flags;
local_irq_save(flags);
/* Murphy: see table of MIC2562a-1 */
switch (state->Vcc) {
case 0:
clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1);
break;
case 33:
clear_cs3_bit(VCC_3V_EN|EN1);
set_cs3_bit(VCC_5V_EN|EN0);
break;
case 50:
clear_cs3_bit(VCC_5V_EN|EN1);
set_cs3_bit(VCC_3V_EN|EN0);
break;
default:
printk(KERN_ERR "%s(): unrecognized Vcc %u\n",
__func__, state->Vcc);
clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1);
local_irq_restore(flags);
return -1;
}
local_irq_restore(flags);
return 0;
}
static void simpad_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
{
soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs));
}
static void simpad_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
{
soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs));
set_cs3_bit(PCMCIA_RESET);
}
static struct pcmcia_low_level simpad_pcmcia_ops = {
.owner = THIS_MODULE,
.hw_init = simpad_pcmcia_hw_init,
.hw_shutdown = simpad_pcmcia_hw_shutdown,
.socket_state = simpad_pcmcia_socket_state,
.configure_socket = simpad_pcmcia_configure_socket,
.socket_init = simpad_pcmcia_socket_init,
.socket_suspend = simpad_pcmcia_socket_suspend,
};
int __init pcmcia_simpad_init(struct device *dev)
{
int ret = -ENODEV;
if (machine_is_simpad())
ret = sa11xx_drv_pcmcia_probe(dev, &simpad_pcmcia_ops, 1, 1);
return ret;
}
|
