1 /*
2 * drivers/pcmcia/sa1100_cerf.c
3 *
4 * PCMCIA implementation routines for CerfBoard
5 * Based off the Assabet.
6 *
7 */
8 #include <linux/module.h>
9 #include <linux/kernel.h>
10 #include <linux/device.h>
11 #include <linux/init.h>
12 #include <linux/delay.h>
13 #include <linux/gpio.h>
14
15 #include <mach/hardware.h>
16 #include <asm/mach-types.h>
17 #include <asm/irq.h>
18 #include <mach/cerf.h>
19 #include "sa1100_generic.h"
20
21 #define CERF_SOCKET 1
22
cerf_pcmcia_hw_init(struct soc_pcmcia_socket * skt)23 static int cerf_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
24 {
25 int ret;
26
27 ret = gpio_request_one(CERF_GPIO_CF_RESET, GPIOF_OUT_INIT_LOW, "CF_RESET");
28 if (ret)
29 return ret;
30
31 skt->stat[SOC_STAT_CD].gpio = CERF_GPIO_CF_CD;
32 skt->stat[SOC_STAT_CD].name = "CF_CD";
33 skt->stat[SOC_STAT_BVD1].gpio = CERF_GPIO_CF_BVD1;
34 skt->stat[SOC_STAT_BVD1].name = "CF_BVD1";
35 skt->stat[SOC_STAT_BVD2].gpio = CERF_GPIO_CF_BVD2;
36 skt->stat[SOC_STAT_BVD2].name = "CF_BVD2";
37 skt->stat[SOC_STAT_RDY].gpio = CERF_GPIO_CF_IRQ;
38 skt->stat[SOC_STAT_RDY].name = "CF_IRQ";
39
40 return 0;
41 }
42
cerf_pcmcia_hw_shutdown(struct soc_pcmcia_socket * skt)43 static void cerf_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
44 {
45 gpio_free(CERF_GPIO_CF_RESET);
46 }
47
48 static void
cerf_pcmcia_socket_state(struct soc_pcmcia_socket * skt,struct pcmcia_state * state)49 cerf_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state)
50 {
51 state->vs_3v = 1;
52 state->vs_Xv = 0;
53 }
54
55 static int
cerf_pcmcia_configure_socket(struct soc_pcmcia_socket * skt,const socket_state_t * state)56 cerf_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
57 const socket_state_t *state)
58 {
59 switch (state->Vcc) {
60 case 0:
61 case 50:
62 case 33:
63 break;
64
65 default:
66 printk(KERN_ERR "%s(): unrecognized Vcc %u\n",
67 __func__, state->Vcc);
68 return -1;
69 }
70
71 gpio_set_value(CERF_GPIO_CF_RESET, !!(state->flags & SS_RESET));
72
73 return 0;
74 }
75
76 static struct pcmcia_low_level cerf_pcmcia_ops = {
77 .owner = THIS_MODULE,
78 .hw_init = cerf_pcmcia_hw_init,
79 .hw_shutdown = cerf_pcmcia_hw_shutdown,
80 .socket_state = cerf_pcmcia_socket_state,
81 .configure_socket = cerf_pcmcia_configure_socket,
82 };
83
pcmcia_cerf_init(struct device * dev)84 int pcmcia_cerf_init(struct device *dev)
85 {
86 int ret = -ENODEV;
87
88 if (machine_is_cerf())
89 ret = sa11xx_drv_pcmcia_probe(dev, &cerf_pcmcia_ops, CERF_SOCKET, 1);
90
91 return ret;
92 }
93