1/*
2 * linux/drivers/pcmcia/pxa2xx_palmtx.c
3 *
4 * Driver for Palm T|X PCMCIA
5 *
6 * Copyright (C) 2007-2011 Marek Vasut <marek.vasut@gmail.com>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 *
12 */
13
14#include <linux/module.h>
15#include <linux/platform_device.h>
16#include <linux/gpio.h>
17
18#include <asm/mach-types.h>
19#include <mach/palmtx.h>
20#include "soc_common.h"
21
22static struct gpio palmtx_pcmcia_gpios[] = {
23	{ GPIO_NR_PALMTX_PCMCIA_POWER1,	GPIOF_INIT_LOW,	"PCMCIA Power 1" },
24	{ GPIO_NR_PALMTX_PCMCIA_POWER2,	GPIOF_INIT_LOW,	"PCMCIA Power 2" },
25	{ GPIO_NR_PALMTX_PCMCIA_RESET,	GPIOF_INIT_HIGH,"PCMCIA Reset" },
26};
27
28static int palmtx_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
29{
30	int ret;
31
32	ret = gpio_request_array(palmtx_pcmcia_gpios,
33				ARRAY_SIZE(palmtx_pcmcia_gpios));
34
35	skt->stat[SOC_STAT_RDY].gpio = GPIO_NR_PALMTX_PCMCIA_READY;
36	skt->stat[SOC_STAT_RDY].name = "PCMCIA Ready";
37
38	return ret;
39}
40
41static void palmtx_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
42{
43	gpio_free_array(palmtx_pcmcia_gpios, ARRAY_SIZE(palmtx_pcmcia_gpios));
44}
45
46static void palmtx_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
47					struct pcmcia_state *state)
48{
49	state->detect = 1; /* always inserted */
50	state->vs_3v  = 1;
51	state->vs_Xv  = 0;
52}
53
54static int
55palmtx_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
56				const socket_state_t *state)
57{
58	gpio_set_value(GPIO_NR_PALMTX_PCMCIA_POWER1, 1);
59	gpio_set_value(GPIO_NR_PALMTX_PCMCIA_POWER2, 1);
60	gpio_set_value(GPIO_NR_PALMTX_PCMCIA_RESET,
61			!!(state->flags & SS_RESET));
62
63	return 0;
64}
65
66static struct pcmcia_low_level palmtx_pcmcia_ops = {
67	.owner			= THIS_MODULE,
68
69	.first			= 0,
70	.nr			= 1,
71
72	.hw_init		= palmtx_pcmcia_hw_init,
73	.hw_shutdown		= palmtx_pcmcia_hw_shutdown,
74
75	.socket_state		= palmtx_pcmcia_socket_state,
76	.configure_socket	= palmtx_pcmcia_configure_socket,
77};
78
79static struct platform_device *palmtx_pcmcia_device;
80
81static int __init palmtx_pcmcia_init(void)
82{
83	int ret;
84
85	if (!machine_is_palmtx())
86		return -ENODEV;
87
88	palmtx_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
89	if (!palmtx_pcmcia_device)
90		return -ENOMEM;
91
92	ret = platform_device_add_data(palmtx_pcmcia_device, &palmtx_pcmcia_ops,
93					sizeof(palmtx_pcmcia_ops));
94
95	if (!ret)
96		ret = platform_device_add(palmtx_pcmcia_device);
97
98	if (ret)
99		platform_device_put(palmtx_pcmcia_device);
100
101	return ret;
102}
103
104static void __exit palmtx_pcmcia_exit(void)
105{
106	platform_device_unregister(palmtx_pcmcia_device);
107}
108
109module_init(palmtx_pcmcia_init);
110module_exit(palmtx_pcmcia_exit);
111
112MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");
113MODULE_DESCRIPTION("PCMCIA support for Palm T|X");
114MODULE_ALIAS("platform:pxa2xx-pcmcia");
115MODULE_LICENSE("GPL");
116