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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

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