1 /*
2 * linux/drivers/pcmcia/pxa2xx_palmld.c
3 *
4 * Driver for Palm LifeDrive PCMCIA
5 *
6 * Copyright (C) 2006 Alex Osborne <ato@meshy.org>
7 * Copyright (C) 2007-2008 Marek Vasut <marek.vasut@gmail.com>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 *
13 */
14
15 #include <linux/module.h>
16 #include <linux/platform_device.h>
17 #include <linux/gpio.h>
18
19 #include <asm/mach-types.h>
20 #include <mach/palmld.h>
21 #include "soc_common.h"
22
palmld_pcmcia_hw_init(struct soc_pcmcia_socket * skt)23 static int palmld_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
24 {
25 int ret;
26
27 ret = gpio_request(GPIO_NR_PALMLD_PCMCIA_POWER, "PCMCIA PWR");
28 if (ret)
29 goto err1;
30 ret = gpio_direction_output(GPIO_NR_PALMLD_PCMCIA_POWER, 0);
31 if (ret)
32 goto err2;
33
34 ret = gpio_request(GPIO_NR_PALMLD_PCMCIA_RESET, "PCMCIA RST");
35 if (ret)
36 goto err2;
37 ret = gpio_direction_output(GPIO_NR_PALMLD_PCMCIA_RESET, 1);
38 if (ret)
39 goto err3;
40
41 ret = gpio_request(GPIO_NR_PALMLD_PCMCIA_READY, "PCMCIA RDY");
42 if (ret)
43 goto err3;
44 ret = gpio_direction_input(GPIO_NR_PALMLD_PCMCIA_READY);
45 if (ret)
46 goto err4;
47
48 skt->irq = IRQ_GPIO(GPIO_NR_PALMLD_PCMCIA_READY);
49 return 0;
50
51 err4:
52 gpio_free(GPIO_NR_PALMLD_PCMCIA_READY);
53 err3:
54 gpio_free(GPIO_NR_PALMLD_PCMCIA_RESET);
55 err2:
56 gpio_free(GPIO_NR_PALMLD_PCMCIA_POWER);
57 err1:
58 return ret;
59 }
60
palmld_pcmcia_hw_shutdown(struct soc_pcmcia_socket * skt)61 static void palmld_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
62 {
63 gpio_free(GPIO_NR_PALMLD_PCMCIA_READY);
64 gpio_free(GPIO_NR_PALMLD_PCMCIA_RESET);
65 gpio_free(GPIO_NR_PALMLD_PCMCIA_POWER);
66 }
67
palmld_pcmcia_socket_state(struct soc_pcmcia_socket * skt,struct pcmcia_state * state)68 static void palmld_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
69 struct pcmcia_state *state)
70 {
71 state->detect = 1; /* always inserted */
72 state->ready = !!gpio_get_value(GPIO_NR_PALMLD_PCMCIA_READY);
73 state->bvd1 = 1;
74 state->bvd2 = 1;
75 state->wrprot = 0;
76 state->vs_3v = 1;
77 state->vs_Xv = 0;
78 }
79
palmld_pcmcia_configure_socket(struct soc_pcmcia_socket * skt,const socket_state_t * state)80 static int palmld_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
81 const socket_state_t *state)
82 {
83 gpio_set_value(GPIO_NR_PALMLD_PCMCIA_POWER, 1);
84 gpio_set_value(GPIO_NR_PALMLD_PCMCIA_RESET,
85 !!(state->flags & SS_RESET));
86
87 return 0;
88 }
89
palmld_pcmcia_socket_init(struct soc_pcmcia_socket * skt)90 static void palmld_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
91 {
92 }
93
palmld_pcmcia_socket_suspend(struct soc_pcmcia_socket * skt)94 static void palmld_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
95 {
96 }
97
98 static struct pcmcia_low_level palmld_pcmcia_ops = {
99 .owner = THIS_MODULE,
100
101 .first = 0,
102 .nr = 2,
103
104 .hw_init = palmld_pcmcia_hw_init,
105 .hw_shutdown = palmld_pcmcia_hw_shutdown,
106
107 .socket_state = palmld_pcmcia_socket_state,
108 .configure_socket = palmld_pcmcia_configure_socket,
109
110 .socket_init = palmld_pcmcia_socket_init,
111 .socket_suspend = palmld_pcmcia_socket_suspend,
112 };
113
114 static struct platform_device *palmld_pcmcia_device;
115
palmld_pcmcia_init(void)116 static int __init palmld_pcmcia_init(void)
117 {
118 int ret;
119
120 if (!machine_is_palmld())
121 return -ENODEV;
122
123 palmld_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
124 if (!palmld_pcmcia_device)
125 return -ENOMEM;
126
127 ret = platform_device_add_data(palmld_pcmcia_device, &palmld_pcmcia_ops,
128 sizeof(palmld_pcmcia_ops));
129
130 if (!ret)
131 ret = platform_device_add(palmld_pcmcia_device);
132
133 if (ret)
134 platform_device_put(palmld_pcmcia_device);
135
136 return ret;
137 }
138
palmld_pcmcia_exit(void)139 static void __exit palmld_pcmcia_exit(void)
140 {
141 platform_device_unregister(palmld_pcmcia_device);
142 }
143
144 module_init(palmld_pcmcia_init);
145 module_exit(palmld_pcmcia_exit);
146
147 MODULE_AUTHOR("Alex Osborne <ato@meshy.org>,"
148 " Marek Vasut <marek.vasut@gmail.com>");
149 MODULE_DESCRIPTION("PCMCIA support for Palm LifeDrive");
150 MODULE_ALIAS("platform:pxa2xx-pcmcia");
151 MODULE_LICENSE("GPL");
152