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
|
/*
* drivers/pcmcia/sa1100_assabet.c
*
* PCMCIA implementation routines for Assabet
*
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/interrupt.h>
#include <linux/device.h>
#include <linux/init.h>
#include <asm/hardware.h>
#include <asm/mach-types.h>
#include <asm/irq.h>
#include <asm/signal.h>
#include <asm/arch/assabet.h>
#include "sa1100_generic.h"
static struct pcmcia_irqs irqs[] = {
{ 1, ASSABET_IRQ_GPIO_CF_CD, "CF CD" },
{ 1, ASSABET_IRQ_GPIO_CF_BVD2, "CF BVD2" },
{ 1, ASSABET_IRQ_GPIO_CF_BVD1, "CF BVD1" },
};
static int assabet_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
{
skt->irq = ASSABET_IRQ_GPIO_CF_IRQ;
return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
}
/*
* Release all resources.
*/
static void assabet_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
{
soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
}
static void
assabet_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state)
{
unsigned long levels = GPLR;
state->detect = (levels & ASSABET_GPIO_CF_CD) ? 0 : 1;
state->ready = (levels & ASSABET_GPIO_CF_IRQ) ? 1 : 0;
state->bvd1 = (levels & ASSABET_GPIO_CF_BVD1) ? 1 : 0;
state->bvd2 = (levels & ASSABET_GPIO_CF_BVD2) ? 1 : 0;
state->wrprot = 0; /* Not available on Assabet. */
state->vs_3v = 1; /* Can only apply 3.3V on Assabet. */
state->vs_Xv = 0;
}
static int
assabet_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
{
unsigned int mask;
switch (state->Vcc) {
case 0:
mask = 0;
break;
case 50:
printk(KERN_WARNING "%s(): CS asked for 5V, applying 3.3V...\n",
__FUNCTION__);
case 33: /* Can only apply 3.3V to the CF slot. */
mask = ASSABET_BCR_CF_PWR;
break;
default:
printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __FUNCTION__,
state->Vcc);
return -1;
}
/* Silently ignore Vpp, output enable, speaker enable. */
if (state->flags & SS_RESET)
mask |= ASSABET_BCR_CF_RST;
ASSABET_BCR_frob(ASSABET_BCR_CF_RST | ASSABET_BCR_CF_PWR, mask);
return 0;
}
/*
* Enable card status IRQs on (re-)initialisation. This can
* be called at initialisation, power management event, or
* pcmcia event.
*/
static void assabet_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
{
/*
* Enable CF bus
*/
ASSABET_BCR_clear(ASSABET_BCR_CF_BUS_OFF);
soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs));
}
/*
* Disable card status IRQs on suspend.
*/
static void assabet_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
{
soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs));
/*
* Tristate the CF bus signals. Also assert CF
* reset as per user guide page 4-11.
*/
ASSABET_BCR_set(ASSABET_BCR_CF_BUS_OFF | ASSABET_BCR_CF_RST);
}
static struct pcmcia_low_level assabet_pcmcia_ops = {
.owner = THIS_MODULE,
.hw_init = assabet_pcmcia_hw_init,
.hw_shutdown = assabet_pcmcia_hw_shutdown,
.socket_state = assabet_pcmcia_socket_state,
.configure_socket = assabet_pcmcia_configure_socket,
.socket_init = assabet_pcmcia_socket_init,
.socket_suspend = assabet_pcmcia_socket_suspend,
};
int __init pcmcia_assabet_init(struct device *dev)
{
int ret = -ENODEV;
if (machine_is_assabet() && !machine_has_neponset())
ret = sa11xx_drv_pcmcia_probe(dev, &assabet_pcmcia_ops, 1, 1);
return ret;
}
|
