/*
*
* MyCable board specific pcmcia routines.
*
* Copyright 2003 MontaVista Software Inc.
* Author: Pete Popov, MontaVista Software, Inc.
* ppopov@mvista.com or source@mvista.com
*
* ########################################################################
*
* This program is free software; you can distribute it and/or modify it
* under the terms of the GNU General Public License (Version 2) as
* published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
*
* ########################################################################
*
*
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/ioport.h>
#include <linux/kernel.h>
#include <linux/tqueue.h>
#include <linux/timer.h>
#include <linux/mm.h>
#include <linux/proc_fs.h>
#include <linux/types.h>
#include <pcmcia/cs_types.h>
#include <pcmcia/cs.h>
#include <pcmcia/ss.h>
#include <pcmcia/bulkmem.h>
#include <pcmcia/cistpl.h>
#include <pcmcia/bus_ops.h>
#include "cs_internal.h"
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/system.h>
#include <asm/au1000.h>
#include <asm/au1000_pcmcia.h>
#define PCMCIA_MAX_SOCK 0
#define PCMCIA_NUM_SOCKS (PCMCIA_MAX_SOCK + 1)
#define PCMCIA_IRQ AU1000_GPIO_4
#if 0
#define DEBUG(x,args...) printk(__FUNCTION__ ": " x,##args)
#else
#define DEBUG(x,args...)
#endif
static int xxs1500_pcmcia_init(struct pcmcia_init *init)
{
return PCMCIA_NUM_SOCKS;
}
static int xxs1500_pcmcia_shutdown(void)
{
/* turn off power */
au_writel(au_readl(GPIO2_PINSTATE) | (1<<14)|(1<<30),
GPIO2_OUTPUT);
au_sync_delay(100);
/* assert reset */
au_writel(au_readl(GPIO2_PINSTATE) | (1<<4)|(1<<20),
GPIO2_OUTPUT);
au_sync_delay(100);
return 0;
}
static int
xxs1500_pcmcia_socket_state(unsigned sock, struct pcmcia_state *state)
{
u32 inserted; u32 vs;
unsigned long gpio, gpio2;
if(sock > PCMCIA_MAX_SOCK) return -1;
gpio = au_readl(SYS_PINSTATERD);
gpio2 = au_readl(GPIO2_PINSTATE);
vs = gpio2 & ((1<<8) | (1<<9));
inserted = (!(gpio & 0x1) && !(gpio & 0x2));
state->ready = 0;
state->vs_Xv = 0;
state->vs_3v = 0;
state->detect = 0;
if (inserted) {
switch (vs) {
case 0:
case 1:
case 2:
state->vs_3v=1;
break;
case 3: /* 5V */
default:
/* return without setting 'detect' */
printk(KERN_ERR "au1x00_cs: unsupported VS\n",
vs);
return;
}
state->detect = 1;
}
if (state->detect) {
state->ready = 1;
}
state->bvd1= gpio2 & (1<<10);
state->bvd2 = gpio2 & (1<<11);
state->wrprot=0;
return 1;
}
static int xxs1500_pcmcia_get_irq_info(struct pcmcia_irq_info *info)
{
if(info->sock > PCMCIA_MAX_SOCK) return -1;
info->irq = PCMCIA_IRQ;
return 0;
}
static int
xxs1500_pcmcia_configure_socket(const struct pcmcia_configure *configure)
{
if(configure->sock > PCMCIA_MAX_SOCK) return -1;
DEBUG("Vcc %dV Vpp %dV, reset %d\n",
configure->vcc, configure->vpp, configure->reset);
switch(configure->vcc){
case 33: /* Vcc 3.3V */
/* turn on power */
DEBUG("turn on power\n");
au_writel((au_readl(GPIO2_PINSTATE) & ~(1<<14))|(1<<30),
GPIO2_OUTPUT);
au_sync_delay(100);
break;
case 50: /* Vcc 5V */
default: /* what's this ? */
printk(KERN_ERR "au1x00_cs: unsupported VCC\n");
case 0: /* Vcc 0 */
/* turn off power */
au_sync_delay(100);
au_writel(au_readl(GPIO2_PINSTATE) | (1<<14)|(1<<30),
GPIO2_OUTPUT);
break;
}
if (!configure->reset) {
DEBUG("deassert reset\n");
au_writel((au_readl(GPIO2_PINSTATE) & ~(1<<4))|(1<<20),
GPIO2_OUTPUT);
au_sync_delay(100);
au_writel((au_readl(GPIO2_PINSTATE) & ~(1<<5))|(1<<21),
GPIO2_OUTPUT);
}
else {
DEBUG("assert reset\n");
au_writel(au_readl(GPIO2_PINSTATE) | (1<<4)|(1<<20),
GPIO2_OUTPUT);
}
au_sync_delay(100);
return 0;
}
struct pcmcia_low_level xxs1500_pcmcia_ops = {
xxs1500_pcmcia_init,
xxs1500_pcmcia_shutdown,
xxs1500_pcmcia_socket_state,
xxs1500_pcmcia_get_irq_info,
xxs1500_pcmcia_configure_socket
};
