Linux 2.6.33-rc6
[cris-mirror.git] / drivers / pcmcia / pxa2xx_cm_x255.c
blob05913d0bbdbef64b513ab89f1c7fe448c6002248
1 /*
2 * linux/drivers/pcmcia/pxa/pxa_cm_x255.c
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.
8 * Compulab Ltd., 2003, 2007, 2008
9 * Mike Rapoport <mike@compulab.co.il>
13 #include <linux/platform_device.h>
14 #include <linux/irq.h>
15 #include <linux/delay.h>
16 #include <linux/gpio.h>
18 #include <asm/mach-types.h>
20 #include "soc_common.h"
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)
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)
35 static struct pcmcia_irqs irqs[] = {
36 { 0, PCMCIA_S0_CD_VALID, "PCMCIA0 CD" },
37 { 1, PCMCIA_S1_CD_VALID, "PCMCIA1 CD" },
40 static int cmx255_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
42 int ret = gpio_request(GPIO_PCMCIA_RESET, "PCCard reset");
43 if (ret)
44 return ret;
45 gpio_direction_output(GPIO_PCMCIA_RESET, 0);
47 skt->socket.pci_irq = skt->nr == 0 ? PCMCIA_S0_RDYINT : PCMCIA_S1_RDYINT;
48 ret = soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
49 if (!ret)
50 gpio_free(GPIO_PCMCIA_RESET);
52 return ret;
55 static void cmx255_pcmcia_shutdown(struct soc_pcmcia_socket *skt)
57 soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
58 gpio_free(GPIO_PCMCIA_RESET);
62 static void cmx255_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
63 struct pcmcia_state *state)
65 int cd = skt->nr ? GPIO_PCMCIA_S1_CD_VALID : GPIO_PCMCIA_S0_CD_VALID;
66 int rdy = skt->nr ? GPIO_PCMCIA_S1_RDYINT : GPIO_PCMCIA_S0_RDYINT;
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 */
78 static int cmx255_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
79 const socket_state_t *state)
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);
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);
99 break;
102 return 0;
105 static void cmx255_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
109 static void cmx255_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
114 static 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,
125 static struct platform_device *cmx255_pcmcia_device;
127 int __init cmx255_pcmcia_init(void)
129 int ret;
131 cmx255_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
133 if (!cmx255_pcmcia_device)
134 return -ENOMEM;
136 ret = platform_device_add_data(cmx255_pcmcia_device, &cmx255_pcmcia_ops,
137 sizeof(cmx255_pcmcia_ops));
139 if (ret == 0) {
140 printk(KERN_INFO "Registering cm-x255 PCMCIA interface.\n");
141 ret = platform_device_add(cmx255_pcmcia_device);
144 if (ret)
145 platform_device_put(cmx255_pcmcia_device);
147 return ret;
150 void __exit cmx255_pcmcia_exit(void)
152 platform_device_unregister(cmx255_pcmcia_device);