sa1111_jornada720.c revision 34cdf25a126f053698d549cc12a9c30e9a8a0bab 
1/*
2 * drivers/pcmcia/sa1100_jornada720.c
3 *
4 * Jornada720 PCMCIA specific routines
5 *
6 */
7#include <linux/module.h>
8#include <linux/kernel.h>
9#include <linux/device.h>
10#include <linux/errno.h>
11#include <linux/init.h>
12
13#include <mach/hardware.h>
14#include <asm/hardware/sa1111.h>
15#include <asm/mach-types.h>
16
17#include "sa1111_generic.h"
18
19/* Does SOCKET1_3V actually do anything? */
20#define SOCKET0_POWER	GPIO_GPIO0
21#define SOCKET0_3V	GPIO_GPIO2
22#define SOCKET1_POWER	(GPIO_GPIO1 | GPIO_GPIO3)
23#define SOCKET1_3V	GPIO_GPIO3
24
25static int
26jornada720_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
27{
28	struct sa1111_pcmcia_socket *s = to_skt(skt);
29	unsigned int pa_dwr_mask, pa_dwr_set;
30	int ret;
31
32	printk(KERN_INFO "%s(): config socket %d vcc %d vpp %d\n", __func__,
33		skt->nr, state->Vcc, state->Vpp);
34
35	switch (skt->nr) {
36	case 0:
37		pa_dwr_mask = SOCKET0_POWER | SOCKET0_3V;
38
39		switch (state->Vcc) {
40		default:
41		case  0:
42			pa_dwr_set = 0;
43			break;
44		case 33:
45			pa_dwr_set = SOCKET0_POWER | SOCKET0_3V;
46			break;
47		case 50:
48			pa_dwr_set = SOCKET0_POWER;
49			break;
50		}
51		break;
52
53	case 1:
54		pa_dwr_mask = SOCKET1_POWER;
55
56		switch (state->Vcc) {
57		default:
58		case 0:
59			pa_dwr_set = 0;
60			break;
61		case 33:
62			pa_dwr_set = SOCKET1_POWER;
63			break;
64		case 50:
65			pa_dwr_set = SOCKET1_POWER;
66			break;
67		}
68		break;
69
70	default:
71		return -1;
72	}
73
74	if (state->Vpp != state->Vcc && state->Vpp != 0) {
75		printk(KERN_ERR "%s(): slot cannot support VPP %u\n",
76			__func__, state->Vpp);
77		return -EPERM;
78	}
79
80	ret = sa1111_pcmcia_configure_socket(skt, state);
81	if (ret == 0)
82		sa1111_set_io(s->dev, pa_dwr_mask, pa_dwr_set);
83
84	return ret;
85}
86
87static struct pcmcia_low_level jornada720_pcmcia_ops = {
88	.owner			= THIS_MODULE,
89	.configure_socket	= jornada720_pcmcia_configure_socket,
90	.first			= 0,
91	.nr			= 2,
92};
93
94int pcmcia_jornada720_init(struct device *dev)
95{
96	int ret = -ENODEV;
97
98	if (machine_is_jornada720()) {
99		unsigned int pin = GPIO_A0 | GPIO_A1 | GPIO_A2 | GPIO_A3;
100
101		GRER |= 0x00000002;
102
103		/* Set GPIO_A<3:1> to be outputs for PCMCIA/CF power controller: */
104		sa1111_set_io_dir(dev, pin, 0, 0);
105		sa1111_set_io(dev, pin, 0);
106		sa1111_set_sleep_io(dev, pin, 0);
107
108		sa11xx_drv_pcmcia_ops(&jornada720_pcmcia_ops);
109		ret = sa1111_pcmcia_add(dev, &jornada720_pcmcia_ops,
110				sa11xx_drv_pcmcia_add_one);
111	}
112
113	return ret;
114}
115