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 sa1111_dev *sadev)
 96{
 97	int ret = -ENODEV;
 98
 99	if (machine_is_jornada720()) {
100		unsigned int pin = GPIO_A0 | GPIO_A1 | GPIO_A2 | GPIO_A3;
101
102		GRER |= 0x00000002;
103
104		/* Set GPIO_A<3:1> to be outputs for PCMCIA/CF power controller: */
105		sa1111_set_io_dir(sadev, pin, 0, 0);
106		sa1111_set_io(sadev, pin, 0);
107		sa1111_set_sleep_io(sadev, pin, 0);
108
109		sa11xx_drv_pcmcia_ops(&jornada720_pcmcia_ops);
110		ret = sa1111_pcmcia_add(sadev, &jornada720_pcmcia_ops,
111				sa11xx_drv_pcmcia_add_one);
112	}
113
114	return ret;
115}