143 lines
3.5 KiB
C
143 lines
3.5 KiB
C
/*
|
|
* drivers/pcmcia/sa1100_h3600.c
|
|
*
|
|
* PCMCIA implementation routines for H3600
|
|
*
|
|
*/
|
|
#include <linux/module.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/device.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/init.h>
|
|
#include <linux/delay.h>
|
|
|
|
#include <asm/hardware.h>
|
|
#include <asm/irq.h>
|
|
#include <asm/mach-types.h>
|
|
#include <asm/arch/h3600.h>
|
|
|
|
#include "sa1100_generic.h"
|
|
|
|
static struct pcmcia_irqs irqs[] = {
|
|
{ 0, IRQ_GPIO_H3600_PCMCIA_CD0, "PCMCIA CD0" },
|
|
{ 1, IRQ_GPIO_H3600_PCMCIA_CD1, "PCMCIA CD1" }
|
|
};
|
|
|
|
static int h3600_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
|
|
{
|
|
skt->irq = skt->nr ? IRQ_GPIO_H3600_PCMCIA_IRQ1
|
|
: IRQ_GPIO_H3600_PCMCIA_IRQ0;
|
|
|
|
|
|
return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
|
|
}
|
|
|
|
static void h3600_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
|
|
{
|
|
soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
|
|
|
|
/* Disable CF bus: */
|
|
clr_h3600_egpio(IPAQ_EGPIO_OPT_NVRAM_ON);
|
|
clr_h3600_egpio(IPAQ_EGPIO_OPT_ON);
|
|
set_h3600_egpio(IPAQ_EGPIO_OPT_RESET);
|
|
}
|
|
|
|
static void
|
|
h3600_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state)
|
|
{
|
|
unsigned long levels = GPLR;
|
|
|
|
switch (skt->nr) {
|
|
case 0:
|
|
state->detect = levels & GPIO_H3600_PCMCIA_CD0 ? 0 : 1;
|
|
state->ready = levels & GPIO_H3600_PCMCIA_IRQ0 ? 1 : 0;
|
|
state->bvd1 = 0;
|
|
state->bvd2 = 0;
|
|
state->wrprot = 0; /* Not available on H3600. */
|
|
state->vs_3v = 0;
|
|
state->vs_Xv = 0;
|
|
break;
|
|
|
|
case 1:
|
|
state->detect = levels & GPIO_H3600_PCMCIA_CD1 ? 0 : 1;
|
|
state->ready = levels & GPIO_H3600_PCMCIA_IRQ1 ? 1 : 0;
|
|
state->bvd1 = 0;
|
|
state->bvd2 = 0;
|
|
state->wrprot = 0; /* Not available on H3600. */
|
|
state->vs_3v = 0;
|
|
state->vs_Xv = 0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
static int
|
|
h3600_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
|
|
{
|
|
if (state->Vcc != 0 && state->Vcc != 33 && state->Vcc != 50) {
|
|
printk(KERN_ERR "h3600_pcmcia: unrecognized Vcc %u.%uV\n",
|
|
state->Vcc / 10, state->Vcc % 10);
|
|
return -1;
|
|
}
|
|
|
|
if (state->flags & SS_RESET)
|
|
set_h3600_egpio(IPAQ_EGPIO_CARD_RESET);
|
|
else
|
|
clr_h3600_egpio(IPAQ_EGPIO_CARD_RESET);
|
|
|
|
/* Silently ignore Vpp, output enable, speaker enable. */
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void h3600_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
|
|
{
|
|
/* Enable CF bus: */
|
|
set_h3600_egpio(IPAQ_EGPIO_OPT_NVRAM_ON);
|
|
set_h3600_egpio(IPAQ_EGPIO_OPT_ON);
|
|
clr_h3600_egpio(IPAQ_EGPIO_OPT_RESET);
|
|
|
|
msleep(10);
|
|
|
|
soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs));
|
|
}
|
|
|
|
static void h3600_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
|
|
{
|
|
soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs));
|
|
|
|
/*
|
|
* FIXME: This doesn't fit well. We don't have the mechanism in
|
|
* the generic PCMCIA layer to deal with the idea of two sockets
|
|
* on one bus. We rely on the cs.c behaviour shutting down
|
|
* socket 0 then socket 1.
|
|
*/
|
|
if (skt->nr == 1) {
|
|
clr_h3600_egpio(IPAQ_EGPIO_OPT_ON);
|
|
clr_h3600_egpio(IPAQ_EGPIO_OPT_NVRAM_ON);
|
|
/* hmm, does this suck power? */
|
|
set_h3600_egpio(IPAQ_EGPIO_OPT_RESET);
|
|
}
|
|
}
|
|
|
|
struct pcmcia_low_level h3600_pcmcia_ops = {
|
|
.owner = THIS_MODULE,
|
|
.hw_init = h3600_pcmcia_hw_init,
|
|
.hw_shutdown = h3600_pcmcia_hw_shutdown,
|
|
.socket_state = h3600_pcmcia_socket_state,
|
|
.configure_socket = h3600_pcmcia_configure_socket,
|
|
|
|
.socket_init = h3600_pcmcia_socket_init,
|
|
.socket_suspend = h3600_pcmcia_socket_suspend,
|
|
};
|
|
|
|
int __init pcmcia_h3600_init(struct device *dev)
|
|
{
|
|
int ret = -ENODEV;
|
|
|
|
if (machine_is_h3600())
|
|
ret = sa11xx_drv_pcmcia_probe(dev, &h3600_pcmcia_ops, 0, 2);
|
|
|
|
return ret;
|
|
}
|