blob: 05913d0bbdbef64b513ab89f1c7fe448c6002248 [file] [log] [blame]
Mike Rapoport8616e2f2008-10-05 10:27:22 +01001/*
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
18#include <asm/mach-types.h>
Mike Rapoport8616e2f2008-10-05 10:27:22 +010019
20#include "soc_common.h"
21
22#define GPIO_PCMCIA_SKTSEL (54)
23#define GPIO_PCMCIA_S0_CD_VALID (16)
24#define GPIO_PCMCIA_S1_CD_VALID (17)
25#define GPIO_PCMCIA_S0_RDYINT (6)
26#define GPIO_PCMCIA_S1_RDYINT (8)
27#define GPIO_PCMCIA_RESET (9)
28
29#define PCMCIA_S0_CD_VALID IRQ_GPIO(GPIO_PCMCIA_S0_CD_VALID)
30#define PCMCIA_S1_CD_VALID IRQ_GPIO(GPIO_PCMCIA_S1_CD_VALID)
31#define PCMCIA_S0_RDYINT IRQ_GPIO(GPIO_PCMCIA_S0_RDYINT)
32#define PCMCIA_S1_RDYINT IRQ_GPIO(GPIO_PCMCIA_S1_RDYINT)
33
34
35static struct pcmcia_irqs irqs[] = {
36 { 0, PCMCIA_S0_CD_VALID, "PCMCIA0 CD" },
37 { 1, PCMCIA_S1_CD_VALID, "PCMCIA1 CD" },
38};
39
40static int cmx255_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
41{
42 int ret = gpio_request(GPIO_PCMCIA_RESET, "PCCard reset");
43 if (ret)
44 return ret;
45 gpio_direction_output(GPIO_PCMCIA_RESET, 0);
46
Russell King - ARM Linux66024db2009-03-29 22:45:26 +010047 skt->socket.pci_irq = skt->nr == 0 ? PCMCIA_S0_RDYINT : PCMCIA_S1_RDYINT;
Mike Rapoport8616e2f2008-10-05 10:27:22 +010048 ret = soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
49 if (!ret)
50 gpio_free(GPIO_PCMCIA_RESET);
51
52 return ret;
53}
54
55static void cmx255_pcmcia_shutdown(struct soc_pcmcia_socket *skt)
56{
57 soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
58 gpio_free(GPIO_PCMCIA_RESET);
59}
60
61
62static void cmx255_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
63 struct pcmcia_state *state)
64{
65 int cd = skt->nr ? GPIO_PCMCIA_S1_CD_VALID : GPIO_PCMCIA_S0_CD_VALID;
Mike Rapoport91c39dc2009-04-02 10:21:29 +010066 int rdy = skt->nr ? GPIO_PCMCIA_S1_RDYINT : GPIO_PCMCIA_S0_RDYINT;
Mike Rapoport8616e2f2008-10-05 10:27:22 +010067
68 state->detect = !gpio_get_value(cd);
69 state->ready = !!gpio_get_value(rdy);
70 state->bvd1 = 1;
71 state->bvd2 = 1;
72 state->vs_3v = 0;
73 state->vs_Xv = 0;
74 state->wrprot = 0; /* not available */
75}
76
77
78static int cmx255_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
79 const socket_state_t *state)
80{
81 switch (skt->nr) {
82 case 0:
83 if (state->flags & SS_RESET) {
84 gpio_set_value(GPIO_PCMCIA_SKTSEL, 0);
85 udelay(1);
86 gpio_set_value(GPIO_PCMCIA_RESET, 1);
87 udelay(10);
88 gpio_set_value(GPIO_PCMCIA_RESET, 0);
89 }
90 break;
91 case 1:
92 if (state->flags & SS_RESET) {
93 gpio_set_value(GPIO_PCMCIA_SKTSEL, 1);
94 udelay(1);
95 gpio_set_value(GPIO_PCMCIA_RESET, 1);
96 udelay(10);
97 gpio_set_value(GPIO_PCMCIA_RESET, 0);
98 }
99 break;
100 }
101
102 return 0;
103}
104
105static void cmx255_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
106{
107}
108
109static void cmx255_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
110{
111}
112
113
114static struct pcmcia_low_level cmx255_pcmcia_ops __initdata = {
115 .owner = THIS_MODULE,
116 .hw_init = cmx255_pcmcia_hw_init,
117 .hw_shutdown = cmx255_pcmcia_shutdown,
118 .socket_state = cmx255_pcmcia_socket_state,
119 .configure_socket = cmx255_pcmcia_configure_socket,
120 .socket_init = cmx255_pcmcia_socket_init,
121 .socket_suspend = cmx255_pcmcia_socket_suspend,
122 .nr = 1,
123};
124
125static struct platform_device *cmx255_pcmcia_device;
126
127int __init cmx255_pcmcia_init(void)
128{
129 int ret;
130
131 cmx255_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
132
133 if (!cmx255_pcmcia_device)
134 return -ENOMEM;
135
136 ret = platform_device_add_data(cmx255_pcmcia_device, &cmx255_pcmcia_ops,
137 sizeof(cmx255_pcmcia_ops));
138
139 if (ret == 0) {
140 printk(KERN_INFO "Registering cm-x255 PCMCIA interface.\n");
141 ret = platform_device_add(cmx255_pcmcia_device);
142 }
143
144 if (ret)
145 platform_device_put(cmx255_pcmcia_device);
146
147 return ret;
148}
149
150void __exit cmx255_pcmcia_exit(void)
151{
152 platform_device_unregister(cmx255_pcmcia_device);
153}