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		unsigned long flags;
 83
 84		local_irq_save(flags);
 85		sa1111_set_io(s->dev, pa_dwr_mask, pa_dwr_set);
 86		local_irq_restore(flags);
 87	}
 88
 89	return ret;
 90}
 91
 92static struct pcmcia_low_level jornada720_pcmcia_ops = {
 93	.owner			= THIS_MODULE,
 94	.configure_socket	= jornada720_pcmcia_configure_socket,
 95	.socket_init		= sa1111_pcmcia_socket_init,
 96	.first			= 0,
 97	.nr			= 2,
 98};
 99
100int __devinit pcmcia_jornada720_init(struct device *dev)
101{
102	int ret = -ENODEV;
103
104	if (machine_is_jornada720()) {
105		unsigned int pin = GPIO_A0 | GPIO_A1 | GPIO_A2 | GPIO_A3;
106
107		GRER |= 0x00000002;
108
109		/* Set GPIO_A<3:1> to be outputs for PCMCIA/CF power controller: */
110		sa1111_set_io_dir(dev, pin, 0, 0);
111		sa1111_set_io(dev, pin, 0);
112		sa1111_set_sleep_io(dev, pin, 0);
113
114		sa11xx_drv_pcmcia_ops(&jornada720_pcmcia_ops);
115		ret = sa1111_pcmcia_add(dev, &jornada720_pcmcia_ops,
116				sa11xx_drv_pcmcia_add_one);
117	}
118
119	return ret;
120}