1/*
2 * drivers/pcmcia/sa1100_cerf.c
3 *
4 * PCMCIA implementation routines for CerfBoard
5 * Based off the Assabet.
6 *
7 */
8#include <linux/module.h>
9#include <linux/kernel.h>
10#include <linux/device.h>
11#include <linux/init.h>
12#include <linux/delay.h>
13#include <linux/gpio.h>
14
15#include <mach/hardware.h>
16#include <asm/mach-types.h>
17#include <asm/irq.h>
18#include <mach/cerf.h>
19#include "sa1100_generic.h"
20
21#define CERF_SOCKET	1
22
23static int cerf_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
24{
25	int ret;
26
27	ret = gpio_request_one(CERF_GPIO_CF_RESET, GPIOF_OUT_INIT_LOW, "CF_RESET");
28	if (ret)
29		return ret;
30
31	skt->stat[SOC_STAT_CD].gpio = CERF_GPIO_CF_CD;
32	skt->stat[SOC_STAT_CD].name = "CF_CD";
33	skt->stat[SOC_STAT_BVD1].gpio = CERF_GPIO_CF_BVD1;
34	skt->stat[SOC_STAT_BVD1].name = "CF_BVD1";
35	skt->stat[SOC_STAT_BVD2].gpio = CERF_GPIO_CF_BVD2;
36	skt->stat[SOC_STAT_BVD2].name = "CF_BVD2";
37	skt->stat[SOC_STAT_RDY].gpio = CERF_GPIO_CF_IRQ;
38	skt->stat[SOC_STAT_RDY].name = "CF_IRQ";
39
40	return 0;
41}
42
43static void cerf_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
44{
45	gpio_free(CERF_GPIO_CF_RESET);
46}
47
48static void
49cerf_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state)
50{
51	state->vs_3v	= 1;
52	state->vs_Xv	= 0;
53}
54
55static int
56cerf_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
57			     const socket_state_t *state)
58{
59	switch (state->Vcc) {
60	case 0:
61	case 50:
62	case 33:
63		break;
64
65	default:
66		printk(KERN_ERR "%s(): unrecognized Vcc %u\n",
67			__func__, state->Vcc);
68		return -1;
69	}
70
71	gpio_set_value(CERF_GPIO_CF_RESET, !!(state->flags & SS_RESET));
72
73	return 0;
74}
75
76static struct pcmcia_low_level cerf_pcmcia_ops = {
77	.owner			= THIS_MODULE,
78	.hw_init		= cerf_pcmcia_hw_init,
79	.hw_shutdown		= cerf_pcmcia_hw_shutdown,
80	.socket_state		= cerf_pcmcia_socket_state,
81	.configure_socket	= cerf_pcmcia_configure_socket,
82};
83
84int pcmcia_cerf_init(struct device *dev)
85{
86	int ret = -ENODEV;
87
88	if (machine_is_cerf())
89		ret = sa11xx_drv_pcmcia_probe(dev, &cerf_pcmcia_ops, CERF_SOCKET, 1);
90
91	return ret;
92}
93