190 строки
4.3 KiB
C
190 строки
4.3 KiB
C
/*
|
|
*
|
|
* 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/cistpl.h>
|
|
#include <pcmcia/bus_ops.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(__func__ ": " 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
|
|
};
|