aboutsummaryrefslogtreecommitdiff
path: root/drivers/pcmcia/pxa2xx_vpac270.c
blob: 3565add03a5e8aa18a5c6c6364c2c0bfc6d633cc (plain)
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
// SPDX-License-Identifier: GPL-2.0-only
/*
 * linux/drivers/pcmcia/pxa2xx_vpac270.c
 *
 * Driver for Voipac PXA270 PCMCIA and CF sockets
 *
 * Copyright (C) 2010-2011 Marek Vasut <marek.vasut@gmail.com>
 */

#include <linux/gpio.h>
#include <linux/module.h>
#include <linux/platform_device.h>

#include <asm/mach-types.h>

#include <mach/vpac270.h>

#include "soc_common.h"

static struct gpio vpac270_pcmcia_gpios[] = {
	{ GPIO107_VPAC270_PCMCIA_PPEN,	GPIOF_INIT_LOW,	"PCMCIA PPEN" },
	{ GPIO11_VPAC270_PCMCIA_RESET,	GPIOF_INIT_LOW,	"PCMCIA Reset" },
};

static struct gpio vpac270_cf_gpios[] = {
	{ GPIO16_VPAC270_CF_RESET,	GPIOF_INIT_LOW,	"CF Reset" },
};

static int vpac270_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
{
	int ret;

	if (skt->nr == 0) {
		ret = gpio_request_array(vpac270_pcmcia_gpios,
				ARRAY_SIZE(vpac270_pcmcia_gpios));

		skt->stat[SOC_STAT_CD].gpio = GPIO84_VPAC270_PCMCIA_CD;
		skt->stat[SOC_STAT_CD].name = "PCMCIA CD";
		skt->stat[SOC_STAT_RDY].gpio = GPIO35_VPAC270_PCMCIA_RDY;
		skt->stat[SOC_STAT_RDY].name = "PCMCIA Ready";
	} else {
		ret = gpio_request_array(vpac270_cf_gpios,
				ARRAY_SIZE(vpac270_cf_gpios));

		skt->stat[SOC_STAT_CD].gpio = GPIO17_VPAC270_CF_CD;
		skt->stat[SOC_STAT_CD].name = "CF CD";
		skt->stat[SOC_STAT_RDY].gpio = GPIO12_VPAC270_CF_RDY;
		skt->stat[SOC_STAT_RDY].name = "CF Ready";
	}

	return ret;
}

static void vpac270_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
{
	if (skt->nr == 0)
		gpio_free_array(vpac270_pcmcia_gpios,
					ARRAY_SIZE(vpac270_pcmcia_gpios));
	else
		gpio_free_array(vpac270_cf_gpios,
					ARRAY_SIZE(vpac270_cf_gpios));
}

static void vpac270_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
					struct pcmcia_state *state)
{
	state->vs_3v  = 1;
	state->vs_Xv  = 0;
}

static int
vpac270_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
				const socket_state_t *state)
{
	if (skt->nr == 0) {
		gpio_set_value(GPIO11_VPAC270_PCMCIA_RESET,
			(state->flags & SS_RESET));
		gpio_set_value(GPIO107_VPAC270_PCMCIA_PPEN,
			!(state->Vcc == 33 || state->Vcc == 50));
	} else {
		gpio_set_value(GPIO16_VPAC270_CF_RESET,
			(state->flags & SS_RESET));
	}

	return 0;
}

static struct pcmcia_low_level vpac270_pcmcia_ops = {
	.owner			= THIS_MODULE,

	.first			= 0,
	.nr			= 2,

	.hw_init		= vpac270_pcmcia_hw_init,
	.hw_shutdown		= vpac270_pcmcia_hw_shutdown,

	.socket_state		= vpac270_pcmcia_socket_state,
	.configure_socket	= vpac270_pcmcia_configure_socket,
};

static struct platform_device *vpac270_pcmcia_device;

static int __init vpac270_pcmcia_init(void)
{
	int ret;

	if (!machine_is_vpac270())
		return -ENODEV;

	vpac270_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
	if (!vpac270_pcmcia_device)
		return -ENOMEM;

	ret = platform_device_add_data(vpac270_pcmcia_device,
		&vpac270_pcmcia_ops, sizeof(vpac270_pcmcia_ops));

	if (!ret)
		ret = platform_device_add(vpac270_pcmcia_device);

	if (ret)
		platform_device_put(vpac270_pcmcia_device);

	return ret;
}

static void __exit vpac270_pcmcia_exit(void)
{
	platform_device_unregister(vpac270_pcmcia_device);
}

module_init(vpac270_pcmcia_init);
module_exit(vpac270_pcmcia_exit);

MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");
MODULE_DESCRIPTION("PCMCIA support for Voipac PXA270");
MODULE_ALIAS("platform:pxa2xx-pcmcia");
MODULE_LICENSE("GPL");