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Marek Vašut35978402008-07-07 17:28:59 +01001/*
2 * linux/drivers/pcmcia/pxa2xx_palmtx.c
3 *
4 * Driver for Palm T|X PCMCIA
5 *
Marek Vasut9ed3fbf2011-01-15 19:22:19 +01006 * Copyright (C) 2007-2011 Marek Vasut <marek.vasut@gmail.com>
Marek Vašut35978402008-07-07 17:28:59 +01007 *
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>
Marek Vasut235a1752011-01-15 18:59:55 +010016#include <linux/gpio.h>
Marek Vašut35978402008-07-07 17:28:59 +010017
18#include <asm/mach-types.h>
Russell Kinga09e64f2008-08-05 16:14:15 +010019#include <mach/palmtx.h>
Marek Vašut35978402008-07-07 17:28:59 +010020#include "soc_common.h"
21
Marek Vasut235a1752011-01-15 18:59:55 +010022static 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 { GPIO_NR_PALMTX_PCMCIA_READY, GPIOF_IN, "PCMCIA Ready" },
27};
28
Marek Vašut35978402008-07-07 17:28:59 +010029static int palmtx_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
30{
Marek Vašut574047f2008-08-16 15:34:11 +010031 int ret;
32
Marek Vasut235a1752011-01-15 18:59:55 +010033 ret = gpio_request_array(palmtx_pcmcia_gpios,
34 ARRAY_SIZE(palmtx_pcmcia_gpios));
Marek Vašut574047f2008-08-16 15:34:11 +010035
Russell King - ARM Linux66024db2009-03-29 22:45:26 +010036 skt->socket.pci_irq = gpio_to_irq(GPIO_NR_PALMTX_PCMCIA_READY);
Marek Vašut574047f2008-08-16 15:34:11 +010037
Marek Vašut574047f2008-08-16 15:34:11 +010038 return ret;
Marek Vašut35978402008-07-07 17:28:59 +010039}
40
41static void palmtx_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
42{
Marek Vasut235a1752011-01-15 18:59:55 +010043 gpio_free_array(palmtx_pcmcia_gpios, ARRAY_SIZE(palmtx_pcmcia_gpios));
Marek Vašut35978402008-07-07 17:28:59 +010044}
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->ready = !!gpio_get_value(GPIO_NR_PALMTX_PCMCIA_READY);
51 state->bvd1 = 1;
52 state->bvd2 = 1;
53 state->wrprot = 0;
54 state->vs_3v = 1;
55 state->vs_Xv = 0;
56}
57
58static int
59palmtx_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
60 const socket_state_t *state)
61{
62 gpio_set_value(GPIO_NR_PALMTX_PCMCIA_POWER1, 1);
63 gpio_set_value(GPIO_NR_PALMTX_PCMCIA_POWER2, 1);
64 gpio_set_value(GPIO_NR_PALMTX_PCMCIA_RESET,
65 !!(state->flags & SS_RESET));
66
67 return 0;
68}
69
70static void palmtx_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
71{
72}
73
74static void palmtx_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
75{
76}
77
78static struct pcmcia_low_level palmtx_pcmcia_ops = {
79 .owner = THIS_MODULE,
80
81 .first = 0,
82 .nr = 1,
83
84 .hw_init = palmtx_pcmcia_hw_init,
85 .hw_shutdown = palmtx_pcmcia_hw_shutdown,
86
87 .socket_state = palmtx_pcmcia_socket_state,
88 .configure_socket = palmtx_pcmcia_configure_socket,
89
90 .socket_init = palmtx_pcmcia_socket_init,
91 .socket_suspend = palmtx_pcmcia_socket_suspend,
92};
93
94static struct platform_device *palmtx_pcmcia_device;
95
96static int __init palmtx_pcmcia_init(void)
97{
98 int ret;
99
100 if (!machine_is_palmtx())
101 return -ENODEV;
102
103 palmtx_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
104 if (!palmtx_pcmcia_device)
105 return -ENOMEM;
106
107 ret = platform_device_add_data(palmtx_pcmcia_device, &palmtx_pcmcia_ops,
108 sizeof(palmtx_pcmcia_ops));
109
110 if (!ret)
111 ret = platform_device_add(palmtx_pcmcia_device);
112
113 if (ret)
114 platform_device_put(palmtx_pcmcia_device);
115
116 return ret;
117}
118
119static void __exit palmtx_pcmcia_exit(void)
120{
121 platform_device_unregister(palmtx_pcmcia_device);
122}
123
Marek Vašut574047f2008-08-16 15:34:11 +0100124module_init(palmtx_pcmcia_init);
Marek Vašut35978402008-07-07 17:28:59 +0100125module_exit(palmtx_pcmcia_exit);
126
127MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");
128MODULE_DESCRIPTION("PCMCIA support for Palm T|X");
129MODULE_ALIAS("platform:pxa2xx-pcmcia");
130MODULE_LICENSE("GPL");