1/*
2 * Toshiba e740 PCMCIA specific routines.
3 *
4 * (c) 2004 Ian Molton <spyro@f2s.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11#include <linux/init.h>
12#include <linux/module.h>
13#include <linux/kernel.h>
14#include <linux/errno.h>
15#include <linux/gpio.h>
16#include <linux/interrupt.h>
17#include <linux/platform_device.h>
18
19#include <mach/eseries-gpio.h>
20
21#include <asm/irq.h>
22#include <asm/mach-types.h>
23
24#include "soc_common.h"
25
26static int e740_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
27{
28	if (skt->nr == 0) {
29		skt->stat[SOC_STAT_CD].gpio = GPIO_E740_PCMCIA_CD0;
30		skt->stat[SOC_STAT_CD].name = "CF card detect";
31		skt->stat[SOC_STAT_RDY].gpio = GPIO_E740_PCMCIA_RDY0;
32		skt->stat[SOC_STAT_RDY].name = "CF ready";
33	} else {
34		skt->stat[SOC_STAT_CD].gpio = GPIO_E740_PCMCIA_CD1;
35		skt->stat[SOC_STAT_CD].name = "Wifi switch";
36		skt->stat[SOC_STAT_RDY].gpio = GPIO_E740_PCMCIA_RDY1;
37		skt->stat[SOC_STAT_RDY].name = "Wifi ready";
38	}
39
40	return 0;
41}
42
43static void e740_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
44					struct pcmcia_state *state)
45{
46	state->vs_3v  = 1;
47	state->vs_Xv  = 0;
48}
49
50static int e740_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
51					const socket_state_t *state)
52{
53	if (state->flags & SS_RESET) {
54		if (skt->nr == 0)
55			gpio_set_value(GPIO_E740_PCMCIA_RST0, 1);
56		else
57			gpio_set_value(GPIO_E740_PCMCIA_RST1, 1);
58	} else {
59		if (skt->nr == 0)
60			gpio_set_value(GPIO_E740_PCMCIA_RST0, 0);
61		else
62			gpio_set_value(GPIO_E740_PCMCIA_RST1, 0);
63	}
64
65	switch (state->Vcc) {
66	case 0:	/* Socket off */
67		if (skt->nr == 0)
68			gpio_set_value(GPIO_E740_PCMCIA_PWR0, 0);
69		else
70			gpio_set_value(GPIO_E740_PCMCIA_PWR1, 1);
71		break;
72	case 50:
73	case 33: /* socket on */
74		if (skt->nr == 0)
75			gpio_set_value(GPIO_E740_PCMCIA_PWR0, 1);
76		else
77			gpio_set_value(GPIO_E740_PCMCIA_PWR1, 0);
78		break;
79	default:
80		printk(KERN_ERR "e740_cs: Unsupported Vcc: %d\n", state->Vcc);
81	}
82
83	return 0;
84}
85
86static struct pcmcia_low_level e740_pcmcia_ops = {
87	.owner            = THIS_MODULE,
88	.hw_init          = e740_pcmcia_hw_init,
89	.socket_state     = e740_pcmcia_socket_state,
90	.configure_socket = e740_pcmcia_configure_socket,
91	.nr               = 2,
92};
93
94static struct platform_device *e740_pcmcia_device;
95
96static int __init e740_pcmcia_init(void)
97{
98	int ret;
99
100	if (!machine_is_e740())
101		return -ENODEV;
102
103	e740_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
104	if (!e740_pcmcia_device)
105		return -ENOMEM;
106
107	ret = platform_device_add_data(e740_pcmcia_device, &e740_pcmcia_ops,
108					sizeof(e740_pcmcia_ops));
109
110	if (!ret)
111		ret = platform_device_add(e740_pcmcia_device);
112
113	if (ret)
114		platform_device_put(e740_pcmcia_device);
115
116	return ret;
117}
118
119static void __exit e740_pcmcia_exit(void)
120{
121	platform_device_unregister(e740_pcmcia_device);
122}
123
124module_init(e740_pcmcia_init);
125module_exit(e740_pcmcia_exit);
126
127MODULE_LICENSE("GPL v2");
128MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
129MODULE_ALIAS("platform:pxa2xx-pcmcia");
130MODULE_DESCRIPTION("e740 PCMCIA platform support");
131