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1/*
2 * linux/drivers/pcmcia/pxa/pxa_cm_x255.c
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 *
8 * Compulab Ltd., 2003, 2007, 2008
9 * Mike Rapoport <mike@compulab.co.il>
10 *
11 */
12
13#include <linux/platform_device.h>
14#include <linux/irq.h>
15#include <linux/delay.h>
16#include <linux/gpio.h>
17#include <linux/export.h>
18
19#include "soc_common.h"
20
21#define GPIO_PCMCIA_SKTSEL (54)
22#define GPIO_PCMCIA_S0_CD_VALID (16)
23#define GPIO_PCMCIA_S1_CD_VALID (17)
24#define GPIO_PCMCIA_S0_RDYINT (6)
25#define GPIO_PCMCIA_S1_RDYINT (8)
26#define GPIO_PCMCIA_RESET (9)
27
28static int cmx255_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
29{
30 int ret = gpio_request(GPIO_PCMCIA_RESET, "PCCard reset");
31 if (ret)
32 return ret;
33 gpio_direction_output(GPIO_PCMCIA_RESET, 0);
34
35 if (skt->nr == 0) {
36 skt->stat[SOC_STAT_CD].gpio = GPIO_PCMCIA_S0_CD_VALID;
37 skt->stat[SOC_STAT_CD].name = "PCMCIA0 CD";
38 skt->stat[SOC_STAT_RDY].gpio = GPIO_PCMCIA_S0_RDYINT;
39 skt->stat[SOC_STAT_RDY].name = "PCMCIA0 RDY";
40 } else {
41 skt->stat[SOC_STAT_CD].gpio = GPIO_PCMCIA_S1_CD_VALID;
42 skt->stat[SOC_STAT_CD].name = "PCMCIA1 CD";
43 skt->stat[SOC_STAT_RDY].gpio = GPIO_PCMCIA_S1_RDYINT;
44 skt->stat[SOC_STAT_RDY].name = "PCMCIA1 RDY";
45 }
46
47 return 0;
48}
49
50static void cmx255_pcmcia_shutdown(struct soc_pcmcia_socket *skt)
51{
52 gpio_free(GPIO_PCMCIA_RESET);
53}
54
55
56static void cmx255_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
57 struct pcmcia_state *state)
58{
59 state->vs_3v = 0;
60 state->vs_Xv = 0;
61}
62
63
64static int cmx255_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
65 const socket_state_t *state)
66{
67 switch (skt->nr) {
68 case 0:
69 if (state->flags & SS_RESET) {
70 gpio_set_value(GPIO_PCMCIA_SKTSEL, 0);
71 udelay(1);
72 gpio_set_value(GPIO_PCMCIA_RESET, 1);
73 udelay(10);
74 gpio_set_value(GPIO_PCMCIA_RESET, 0);
75 }
76 break;
77 case 1:
78 if (state->flags & SS_RESET) {
79 gpio_set_value(GPIO_PCMCIA_SKTSEL, 1);
80 udelay(1);
81 gpio_set_value(GPIO_PCMCIA_RESET, 1);
82 udelay(10);
83 gpio_set_value(GPIO_PCMCIA_RESET, 0);
84 }
85 break;
86 }
87
88 return 0;
89}
90
91static struct pcmcia_low_level cmx255_pcmcia_ops __initdata = {
92 .owner = THIS_MODULE,
93 .hw_init = cmx255_pcmcia_hw_init,
94 .hw_shutdown = cmx255_pcmcia_shutdown,
95 .socket_state = cmx255_pcmcia_socket_state,
96 .configure_socket = cmx255_pcmcia_configure_socket,
97 .nr = 1,
98};
99
100static struct platform_device *cmx255_pcmcia_device;
101
102int __init cmx255_pcmcia_init(void)
103{
104 int ret;
105
106 cmx255_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
107
108 if (!cmx255_pcmcia_device)
109 return -ENOMEM;
110
111 ret = platform_device_add_data(cmx255_pcmcia_device, &cmx255_pcmcia_ops,
112 sizeof(cmx255_pcmcia_ops));
113
114 if (ret == 0) {
115 printk(KERN_INFO "Registering cm-x255 PCMCIA interface.\n");
116 ret = platform_device_add(cmx255_pcmcia_device);
117 }
118
119 if (ret)
120 platform_device_put(cmx255_pcmcia_device);
121
122 return ret;
123}
124
125void __exit cmx255_pcmcia_exit(void)
126{
127 platform_device_unregister(cmx255_pcmcia_device);
128}
129

Warning: That file was not part of the compilation database. It may have many parsing errors.