/*
* drivers/pcmcia/sa1100_freebird.c
*
* Created by Eric Peng <ericpeng@coventive.com>
*
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/device.h>
#include <linux/init.h>
#include <asm/hardware.h>
#include <asm/mach-types.h>
#include <asm/irq.h>
#include "sa1100_generic.h"
static struct pcmcia_irqs irqs[] = {
{ 0, IRQ_GPIO_FREEBIRD_CF_CD, "CF_CD" },
{ 0, IRQ_GPIO_FREEBIRD_CF_BVD, "CF_BVD1" },
};
static int freebird_pcmcia_init(struct soc_pcmcia_socket *skt)
{
/* Enable Linkup CF card */
LINKUP_PRC = 0xc0;
mdelay(100);
LINKUP_PRC = 0xc1;
mdelay(100);
LINKUP_PRC = 0xd1;
mdelay(100);
LINKUP_PRC = 0xd1;
mdelay(100);
LINKUP_PRC = 0xc0;
skt->irq = IRQ_GPIO_FREEBIRD_CF_IRQ;
return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
}
static void freebird_pcmcia_shutdown(struct soc_pcmcia_socket *skt)
{
soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs);
/* Disable CF card */
LINKUP_PRC = 0x40; /* SSP=1 SOE=0 */
mdelay(100);
}
static void
freebird_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state)
{
unsigned long levels = LINKUP_PRS;
// printk("LINKUP_PRS=%x\n",levels);
state->detect = ((levels & (LINKUP_CD1 | LINKUP_CD2))==0)?1:0;
state->ready = (levels & LINKUP_RDY)?1:0;
state->bvd1 = (levels & LINKUP_BVD1)?1:0;
state->bvd2 = (levels & LINKUP_BVD2)?1:0;
state->wrprot = 0; /* Not available on Assabet. */
state->vs_3v = 1; /* Can only apply 3.3V on Assabet. */
state->vs_Xv = 0;
}
static int
freebird_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
socket_state_t *state)
{
unsigned long value, flags;
local_irq_save(flags);
value = 0xc0; /* SSP=1 SOE=1 CFE=1 */
switch (state->Vcc) {
case 0:
break;
case 50:
printk(KERN_WARNING "%s(): CS asked for 5V, applying 3.3V...\n",
__FUNCTION__);
case 33: /* Can only apply 3.3V to the CF slot. */
value |= LINKUP_S1;
break;
default:
printk(KERN_ERR "%s(): unrecognized Vcc %u\n",
__FUNCTION__, state->Vcc);
local_irq_restore(flags);
return -1;
}
if (state->flags & SS_RESET)
value |= LINKUP_RESET;
/* Silently ignore Vpp, output enable, speaker enable. */
LINKUP_PRC = value;
// printk("LINKUP_PRC=%x\n",value);
local_irq_restore(flags);
return 0;
}
static void freebird_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
{
soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs));
}
static void freebird_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
{
soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs));
}
static struct pcmcia_low_level freebird_pcmcia_ops = {
.owner = THIS_MODULE,
.hw_init = freebird_pcmcia_hw_init,
.hw_shutdown = freebird_pcmcia_hw_shutdown,
.socket_state = freebird_pcmcia_socket_state,
.configure_socket = freebird_pcmcia_configure_socket,
.socket_init = freebird_pcmcia_socket_init,
.socket_suspend = freebird_pcmcia_socket_suspend,
};
int __init pcmcia_freebird_init(struct device *dev)
{
int ret = -ENODEV;
if (machine_is_freebird())
ret = sa11xx_drv_pcmcia_probe(dev, &freebird_pcmcia_ops, 0, 1);
return ret;
}