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/*
* drivers/pcmcia/sa1100_simpad.c
*
* PCMCIA implementation routines for simpad
*
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/init.h>
#include <asm/arch/hardware.h>
#include <asm/mach-types.h>
#include <asm/irq.h>
#include <asm/arch/simpad.h>
#include "sa1100_generic.h"
extern long get_cs3_shadow(void);
extern void set_cs3_bit(int value);
extern void clear_cs3_bit(int value);
static struct pcmcia_irqs irqs[] = {
{ 1, IRQ_GPIO_CF_CD, "CF_CD" },
};
static int simpad_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
{
clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1);
skt->irq = IRQ_GPIO_CF_IRQ;
return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
}
static void simpad_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
{
soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
/* Disable CF bus: */
//set_cs3_bit(PCMCIA_BUFF_DIS);
clear_cs3_bit(PCMCIA_RESET);
}
static void
simpad_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
struct pcmcia_state *state)
{
unsigned long levels = GPLR;
long cs3reg = get_cs3_shadow();
state->detect=((levels & GPIO_CF_CD)==0)?1:0;
state->ready=(levels & GPIO_CF_IRQ)?1:0;
state->bvd1=1; /* Not available on Simpad. */
state->bvd2=1; /* Not available on Simpad. */
state->wrprot=0; /* Not available on Simpad. */
if((cs3reg & 0x0c) == 0x0c) {
state->vs_3v=0;
state->vs_Xv=0;
} else {
state->vs_3v=1;
state->vs_Xv=0;
}
}
static int
simpad_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
const socket_state_t *state)
{
unsigned long flags;
local_irq_save(flags);
/* Murphy: see table of MIC2562a-1 */
switch (state->Vcc) {
case 0:
clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1);
break;
case 33:
clear_cs3_bit(VCC_3V_EN|EN1);
set_cs3_bit(VCC_5V_EN|EN0);
break;
case 50:
clear_cs3_bit(VCC_5V_EN|EN1);
set_cs3_bit(VCC_3V_EN|EN0);
break;
default:
printk(KERN_ERR "%s(): unrecognized Vcc %u\n",
__func__, state->Vcc);
clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1);
local_irq_restore(flags);
return -1;
}
local_irq_restore(flags);
return 0;
}
static void simpad_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
{
soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs));
}
static void simpad_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
{
soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs));
set_cs3_bit(PCMCIA_RESET);
}
static struct pcmcia_low_level simpad_pcmcia_ops = {
.owner = THIS_MODULE,
.hw_init = simpad_pcmcia_hw_init,
.hw_shutdown = simpad_pcmcia_hw_shutdown,
.socket_state = simpad_pcmcia_socket_state,
.configure_socket = simpad_pcmcia_configure_socket,
.socket_init = simpad_pcmcia_socket_init,
.socket_suspend = simpad_pcmcia_socket_suspend,
};
int __init pcmcia_simpad_init(struct device *dev)
{
int ret = -ENODEV;
if (machine_is_simpad())
ret = sa11xx_drv_pcmcia_probe(dev, &simpad_pcmcia_ops, 1, 1);
return ret;
}
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