[go: nahoru, domu]
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#include <linux/io.h>
13
14#include <mach/hardware.h>
15#include <asm/hardware/sa1111.h>
16#include <asm/mach-types.h>
17
18#include "sa1111_generic.h"
19
20/* Does SOCKET1_3V actually do anything? */
21#define SOCKET0_POWER	GPIO_GPIO0
22#define SOCKET0_3V	GPIO_GPIO2
23#define SOCKET1_POWER	(GPIO_GPIO1 | GPIO_GPIO3)
24#define SOCKET1_3V	GPIO_GPIO3
25
26static int
27jornada720_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
28{
29	struct sa1111_pcmcia_socket *s = to_skt(skt);
30	unsigned int pa_dwr_mask, pa_dwr_set;
31	int ret;
32
33	printk(KERN_INFO "%s(): config socket %d vcc %d vpp %d\n", __func__,
34		skt->nr, state->Vcc, state->Vpp);
35
36	switch (skt->nr) {
37	case 0:
38		pa_dwr_mask = SOCKET0_POWER | SOCKET0_3V;
39
40		switch (state->Vcc) {
41		default:
42		case  0:
43			pa_dwr_set = 0;
44			break;
45		case 33:
46			pa_dwr_set = SOCKET0_POWER | SOCKET0_3V;
47			break;
48		case 50:
49			pa_dwr_set = SOCKET0_POWER;
50			break;
51		}
52		break;
53
54	case 1:
55		pa_dwr_mask = SOCKET1_POWER;
56
57		switch (state->Vcc) {
58		default:
59		case 0:
60			pa_dwr_set = 0;
61			break;
62		case 33:
63			pa_dwr_set = SOCKET1_POWER;
64			break;
65		case 50:
66			pa_dwr_set = SOCKET1_POWER;
67			break;
68		}
69		break;
70
71	default:
72		return -1;
73	}
74
75	if (state->Vpp != state->Vcc && state->Vpp != 0) {
76		printk(KERN_ERR "%s(): slot cannot support VPP %u\n",
77			__func__, state->Vpp);
78		return -EPERM;
79	}
80
81	ret = sa1111_pcmcia_configure_socket(skt, state);
82	if (ret == 0)
83		sa1111_set_io(s->dev, pa_dwr_mask, pa_dwr_set);
84
85	return ret;
86}
87
88static struct pcmcia_low_level jornada720_pcmcia_ops = {
89	.owner			= THIS_MODULE,
90	.configure_socket	= jornada720_pcmcia_configure_socket,
91	.first			= 0,
92	.nr			= 2,
93};
94
95int pcmcia_jornada720_init(struct device *dev)
96{
97	int ret = -ENODEV;
98	struct sa1111_dev *sadev = SA1111_DEV(dev);
99
100	if (machine_is_jornada720()) {
101		unsigned int pin = GPIO_A0 | GPIO_A1 | GPIO_A2 | GPIO_A3;
102
103		GRER |= 0x00000002;
104
105		/* Set GPIO_A<3:1> to be outputs for PCMCIA/CF power controller: */
106		sa1111_set_io_dir(sadev, pin, 0, 0);
107		sa1111_set_io(sadev, pin, 0);
108		sa1111_set_sleep_io(sadev, pin, 0);
109
110		sa11xx_drv_pcmcia_ops(&jornada720_pcmcia_ops);
111		ret = sa1111_pcmcia_add(sadev, &jornada720_pcmcia_ops,
112				sa11xx_drv_pcmcia_add_one);
113	}
114
115	return ret;
116}
117