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 <asm/gpio.h>
21 #include <mach/vpac270.h>
22
23 #include "soc_common.h"
24
25 static struct gpio vpac270_pcmcia_gpios[] = {
26 { GPIO84_VPAC270_PCMCIA_CD, GPIOF_IN, "PCMCIA Card Detect" },
27 { GPIO35_VPAC270_PCMCIA_RDY, GPIOF_IN, "PCMCIA Ready" },
28 { GPIO107_VPAC270_PCMCIA_PPEN, GPIOF_INIT_LOW, "PCMCIA PPEN" },
29 { GPIO11_VPAC270_PCMCIA_RESET, GPIOF_INIT_LOW, "PCMCIA Reset" },
30 };
31
32 static struct gpio vpac270_cf_gpios[] = {
33 { GPIO17_VPAC270_CF_CD, GPIOF_IN, "CF Card Detect" },
34 { GPIO12_VPAC270_CF_RDY, GPIOF_IN, "CF Ready" },
35 { GPIO16_VPAC270_CF_RESET, GPIOF_INIT_LOW, "CF Reset" },
36 };
37
38 static struct pcmcia_irqs cd_irqs[] = {
39 {
40 .sock = 0,
41 .str = "PCMCIA CD"
42 },
43 {
44 .sock = 1,
45 .str = "CF CD"
46 },
47 };
48
vpac270_pcmcia_hw_init(struct soc_pcmcia_socket * skt)49 static int vpac270_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
50 {
51 int ret;
52
53 if (skt->nr == 0) {
54 ret = gpio_request_array(vpac270_pcmcia_gpios,
55 ARRAY_SIZE(vpac270_pcmcia_gpios));
56
57 skt->socket.pci_irq = gpio_to_irq(GPIO35_VPAC270_PCMCIA_RDY);
58 cd_irqs[0].irq = gpio_to_irq(GPIO84_VPAC270_PCMCIA_CD);
59
60 if (!ret)
61 ret = soc_pcmcia_request_irqs(skt, &cd_irqs[0], 1);
62 } else {
63 ret = gpio_request_array(vpac270_cf_gpios,
64 ARRAY_SIZE(vpac270_cf_gpios));
65
66 skt->socket.pci_irq = gpio_to_irq(GPIO12_VPAC270_CF_RDY);
67 cd_irqs[1].irq = gpio_to_irq(GPIO17_VPAC270_CF_CD);
68
69 if (!ret)
70 ret = soc_pcmcia_request_irqs(skt, &cd_irqs[1], 1);
71 }
72
73 return ret;
74 }
75
vpac270_pcmcia_hw_shutdown(struct soc_pcmcia_socket * skt)76 static void vpac270_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
77 {
78 if (skt->nr == 0)
79 gpio_free_array(vpac270_pcmcia_gpios,
80 ARRAY_SIZE(vpac270_pcmcia_gpios));
81 else
82 gpio_free_array(vpac270_cf_gpios,
83 ARRAY_SIZE(vpac270_cf_gpios));
84 }
85
vpac270_pcmcia_socket_state(struct soc_pcmcia_socket * skt,struct pcmcia_state * state)86 static void vpac270_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
87 struct pcmcia_state *state)
88 {
89 if (skt->nr == 0) {
90 state->detect = !gpio_get_value(GPIO84_VPAC270_PCMCIA_CD);
91 state->ready = !!gpio_get_value(GPIO35_VPAC270_PCMCIA_RDY);
92 } else {
93 state->detect = !gpio_get_value(GPIO17_VPAC270_CF_CD);
94 state->ready = !!gpio_get_value(GPIO12_VPAC270_CF_RDY);
95 }
96 state->bvd1 = 1;
97 state->bvd2 = 1;
98 state->wrprot = 0;
99 state->vs_3v = 1;
100 state->vs_Xv = 0;
101 }
102
103 static int
vpac270_pcmcia_configure_socket(struct soc_pcmcia_socket * skt,const socket_state_t * state)104 vpac270_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
105 const socket_state_t *state)
106 {
107 if (skt->nr == 0) {
108 gpio_set_value(GPIO11_VPAC270_PCMCIA_RESET,
109 (state->flags & SS_RESET));
110 gpio_set_value(GPIO107_VPAC270_PCMCIA_PPEN,
111 !(state->Vcc == 33 || state->Vcc == 50));
112 } else {
113 gpio_set_value(GPIO16_VPAC270_CF_RESET,
114 (state->flags & SS_RESET));
115 }
116
117 return 0;
118 }
119
vpac270_pcmcia_socket_init(struct soc_pcmcia_socket * skt)120 static void vpac270_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
121 {
122 }
123
vpac270_pcmcia_socket_suspend(struct soc_pcmcia_socket * skt)124 static void vpac270_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
125 {
126 }
127
128 static struct pcmcia_low_level vpac270_pcmcia_ops = {
129 .owner = THIS_MODULE,
130
131 .first = 0,
132 .nr = 2,
133
134 .hw_init = vpac270_pcmcia_hw_init,
135 .hw_shutdown = vpac270_pcmcia_hw_shutdown,
136
137 .socket_state = vpac270_pcmcia_socket_state,
138 .configure_socket = vpac270_pcmcia_configure_socket,
139
140 .socket_init = vpac270_pcmcia_socket_init,
141 .socket_suspend = vpac270_pcmcia_socket_suspend,
142 };
143
144 static struct platform_device *vpac270_pcmcia_device;
145
vpac270_pcmcia_init(void)146 static int __init vpac270_pcmcia_init(void)
147 {
148 int ret;
149
150 if (!machine_is_vpac270())
151 return -ENODEV;
152
153 vpac270_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
154 if (!vpac270_pcmcia_device)
155 return -ENOMEM;
156
157 ret = platform_device_add_data(vpac270_pcmcia_device,
158 &vpac270_pcmcia_ops, sizeof(vpac270_pcmcia_ops));
159
160 if (!ret)
161 ret = platform_device_add(vpac270_pcmcia_device);
162
163 if (ret)
164 platform_device_put(vpac270_pcmcia_device);
165
166 return ret;
167 }
168
vpac270_pcmcia_exit(void)169 static void __exit vpac270_pcmcia_exit(void)
170 {
171 platform_device_unregister(vpac270_pcmcia_device);
172 }
173
174 module_init(vpac270_pcmcia_init);
175 module_exit(vpac270_pcmcia_exit);
176
177 MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");
178 MODULE_DESCRIPTION("PCMCIA support for Voipac PXA270");
179 MODULE_ALIAS("platform:pxa2xx-pcmcia");
180 MODULE_LICENSE("GPL");
181