1 /*
2 * linux/drivers/pcmcia/pxa2xx_vpac270.c
3 *
4 * Driver for Voipac PXA270 PCMCIA and CF sockets
5 *
6 * Copyright (C) 2010-2011 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/gpio.h>
15 #include <linux/module.h>
16 #include <linux/platform_device.h>
17
18 #include <asm/mach-types.h>
19
20 #include <mach/vpac270.h>
21
22 #include "soc_common.h"
23
24 static struct gpio vpac270_pcmcia_gpios[] = {
25 { GPIO107_VPAC270_PCMCIA_PPEN, GPIOF_INIT_LOW, "PCMCIA PPEN" },
26 { GPIO11_VPAC270_PCMCIA_RESET, GPIOF_INIT_LOW, "PCMCIA Reset" },
27 };
28
29 static struct gpio vpac270_cf_gpios[] = {
30 { GPIO16_VPAC270_CF_RESET, GPIOF_INIT_LOW, "CF Reset" },
31 };
32
vpac270_pcmcia_hw_init(struct soc_pcmcia_socket * skt)33 static int vpac270_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
34 {
35 int ret;
36
37 if (skt->nr == 0) {
38 ret = gpio_request_array(vpac270_pcmcia_gpios,
39 ARRAY_SIZE(vpac270_pcmcia_gpios));
40
41 skt->stat[SOC_STAT_CD].gpio = GPIO84_VPAC270_PCMCIA_CD;
42 skt->stat[SOC_STAT_CD].name = "PCMCIA CD";
43 skt->stat[SOC_STAT_RDY].gpio = GPIO35_VPAC270_PCMCIA_RDY;
44 skt->stat[SOC_STAT_RDY].name = "PCMCIA Ready";
45 } else {
46 ret = gpio_request_array(vpac270_cf_gpios,
47 ARRAY_SIZE(vpac270_cf_gpios));
48
49 skt->stat[SOC_STAT_CD].gpio = GPIO17_VPAC270_CF_CD;
50 skt->stat[SOC_STAT_CD].name = "CF CD";
51 skt->stat[SOC_STAT_RDY].gpio = GPIO12_VPAC270_CF_RDY;
52 skt->stat[SOC_STAT_RDY].name = "CF Ready";
53 }
54
55 return ret;
56 }
57
vpac270_pcmcia_hw_shutdown(struct soc_pcmcia_socket * skt)58 static void vpac270_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
59 {
60 if (skt->nr == 0)
61 gpio_free_array(vpac270_pcmcia_gpios,
62 ARRAY_SIZE(vpac270_pcmcia_gpios));
63 else
64 gpio_free_array(vpac270_cf_gpios,
65 ARRAY_SIZE(vpac270_cf_gpios));
66 }
67
vpac270_pcmcia_socket_state(struct soc_pcmcia_socket * skt,struct pcmcia_state * state)68 static void vpac270_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
69 struct pcmcia_state *state)
70 {
71 state->vs_3v = 1;
72 state->vs_Xv = 0;
73 }
74
75 static int
vpac270_pcmcia_configure_socket(struct soc_pcmcia_socket * skt,const socket_state_t * state)76 vpac270_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
77 const socket_state_t *state)
78 {
79 if (skt->nr == 0) {
80 gpio_set_value(GPIO11_VPAC270_PCMCIA_RESET,
81 (state->flags & SS_RESET));
82 gpio_set_value(GPIO107_VPAC270_PCMCIA_PPEN,
83 !(state->Vcc == 33 || state->Vcc == 50));
84 } else {
85 gpio_set_value(GPIO16_VPAC270_CF_RESET,
86 (state->flags & SS_RESET));
87 }
88
89 return 0;
90 }
91
92 static struct pcmcia_low_level vpac270_pcmcia_ops = {
93 .owner = THIS_MODULE,
94
95 .first = 0,
96 .nr = 2,
97
98 .hw_init = vpac270_pcmcia_hw_init,
99 .hw_shutdown = vpac270_pcmcia_hw_shutdown,
100
101 .socket_state = vpac270_pcmcia_socket_state,
102 .configure_socket = vpac270_pcmcia_configure_socket,
103 };
104
105 static struct platform_device *vpac270_pcmcia_device;
106
vpac270_pcmcia_init(void)107 static int __init vpac270_pcmcia_init(void)
108 {
109 int ret;
110
111 if (!machine_is_vpac270())
112 return -ENODEV;
113
114 vpac270_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
115 if (!vpac270_pcmcia_device)
116 return -ENOMEM;
117
118 ret = platform_device_add_data(vpac270_pcmcia_device,
119 &vpac270_pcmcia_ops, sizeof(vpac270_pcmcia_ops));
120
121 if (!ret)
122 ret = platform_device_add(vpac270_pcmcia_device);
123
124 if (ret)
125 platform_device_put(vpac270_pcmcia_device);
126
127 return ret;
128 }
129
vpac270_pcmcia_exit(void)130 static void __exit vpac270_pcmcia_exit(void)
131 {
132 platform_device_unregister(vpac270_pcmcia_device);
133 }
134
135 module_init(vpac270_pcmcia_init);
136 module_exit(vpac270_pcmcia_exit);
137
138 MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");
139 MODULE_DESCRIPTION("PCMCIA support for Voipac PXA270");
140 MODULE_ALIAS("platform:pxa2xx-pcmcia");
141 MODULE_LICENSE("GPL");
142
