blob: 7c3951a2675dd2c5ba8ff3b0194a8ac865294a7d [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * drivers/pcmcia/sa1100_cerf.c
3 *
4 * PCMCIA implementation routines for CerfBoard
5 * Based off the Assabet.
6 *
7 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07008#include <linux/module.h>
9#include <linux/kernel.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070010#include <linux/device.h>
11#include <linux/init.h>
12#include <linux/delay.h>
13
14#include <asm/hardware.h>
15#include <asm/mach-types.h>
16#include <asm/irq.h>
17#include <asm/arch/cerf.h>
18#include "sa1100_generic.h"
19
20#define CERF_SOCKET 1
21
22static struct pcmcia_irqs irqs[] = {
23 { CERF_SOCKET, CERF_IRQ_GPIO_CF_CD, "CF_CD" },
24 { CERF_SOCKET, CERF_IRQ_GPIO_CF_BVD2, "CF_BVD2" },
25 { CERF_SOCKET, CERF_IRQ_GPIO_CF_BVD1, "CF_BVD1" }
26};
27
28static int cerf_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
29{
30 skt->irq = CERF_IRQ_GPIO_CF_IRQ;
31
32 return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
33}
34
35static void cerf_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
36{
37 soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
38}
39
40static void
41cerf_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state)
42{
43 unsigned long levels = GPLR;
44
45 state->detect = (levels & CERF_GPIO_CF_CD) ?0:1;
46 state->ready = (levels & CERF_GPIO_CF_IRQ) ?1:0;
47 state->bvd1 = (levels & CERF_GPIO_CF_BVD1)?1:0;
48 state->bvd2 = (levels & CERF_GPIO_CF_BVD2)?1:0;
49 state->wrprot = 0;
50 state->vs_3v = 1;
51 state->vs_Xv = 0;
52}
53
54static int
55cerf_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
56 const socket_state_t *state)
57{
58 switch (state->Vcc) {
59 case 0:
60 case 50:
61 case 33:
62 break;
63
64 default:
65 printk(KERN_ERR "%s(): unrecognized Vcc %u\n",
Harvey Harrison2e11cb42008-05-01 04:34:54 -070066 __func__, state->Vcc);
Linus Torvalds1da177e2005-04-16 15:20:36 -070067 return -1;
68 }
69
70 if (state->flags & SS_RESET) {
71 GPSR = CERF_GPIO_CF_RESET;
72 } else {
73 GPCR = CERF_GPIO_CF_RESET;
74 }
75
76 return 0;
77}
78
79static void cerf_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
80{
81 soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs));
82}
83
84static void cerf_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
85{
86 soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs));
87}
88
89static struct pcmcia_low_level cerf_pcmcia_ops = {
90 .owner = THIS_MODULE,
91 .hw_init = cerf_pcmcia_hw_init,
92 .hw_shutdown = cerf_pcmcia_hw_shutdown,
93 .socket_state = cerf_pcmcia_socket_state,
94 .configure_socket = cerf_pcmcia_configure_socket,
95
96 .socket_init = cerf_pcmcia_socket_init,
97 .socket_suspend = cerf_pcmcia_socket_suspend,
98};
99
100int __init pcmcia_cerf_init(struct device *dev)
101{
102 int ret = -ENODEV;
103
104 if (machine_is_cerf())
105 ret = sa11xx_drv_pcmcia_probe(dev, &cerf_pcmcia_ops, CERF_SOCKET, 1);
106
107 return ret;
108}