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/*
* drivers/pcmcia/sa1100_h3600.c
*
* PCMCIA implementation routines for H3600
*
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <mach/hardware.h>
#include <asm/irq.h>
#include <asm/mach-types.h>
#include <mach/h3600.h>
#include <mach/h3600_gpio.h>
#include "sa1100_generic.h"
static struct pcmcia_irqs irqs[] = {
{ .sock = 0, .str = "PCMCIA CD0" }, /* .irq will be filled later */
{ .sock = 1, .str = "PCMCIA CD1" }
};
static int h3600_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
{
int err;
switch (skt->nr) {
case 0:
err = gpio_request(H3XXX_GPIO_PCMCIA_IRQ0, "PCMCIA IRQ0");
if (err)
goto err00;
err = gpio_direction_input(H3XXX_GPIO_PCMCIA_IRQ0);
if (err)
goto err01;
skt->socket.pci_irq = gpio_to_irq(H3XXX_GPIO_PCMCIA_IRQ0);
err = gpio_request(H3XXX_GPIO_PCMCIA_CD0, "PCMCIA CD0");
if (err)
goto err01;
err = gpio_direction_input(H3XXX_GPIO_PCMCIA_CD0);
if (err)
goto err02;
irqs[0].irq = gpio_to_irq(H3XXX_GPIO_PCMCIA_CD0);
err = soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
if (err)
goto err02;
break;
case 1:
err = gpio_request(H3XXX_GPIO_PCMCIA_IRQ1, "PCMCIA IRQ1");
if (err)
goto err10;
err = gpio_direction_input(H3XXX_GPIO_PCMCIA_IRQ1);
if (err)
goto err11;
skt->socket.pci_irq = gpio_to_irq(H3XXX_GPIO_PCMCIA_IRQ1);
err = gpio_request(H3XXX_GPIO_PCMCIA_CD1, "PCMCIA CD1");
if (err)
goto err11;
err = gpio_direction_input(H3XXX_GPIO_PCMCIA_CD1);
if (err)
goto err12;
irqs[1].irq = gpio_to_irq(H3XXX_GPIO_PCMCIA_CD1);
err = soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
if (err)
goto err12;
break;
}
return 0;
err02: gpio_free(H3XXX_GPIO_PCMCIA_CD0);
err01: gpio_free(H3XXX_GPIO_PCMCIA_IRQ0);
err00: return err;
err12: gpio_free(H3XXX_GPIO_PCMCIA_CD0);
err11: gpio_free(H3XXX_GPIO_PCMCIA_IRQ0);
err10: return err;
}
static void h3600_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
{
soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
/* Disable CF bus: */
assign_h3600_egpio(IPAQ_EGPIO_OPT_NVRAM_ON, 0);
assign_h3600_egpio(IPAQ_EGPIO_OPT_ON, 0);
assign_h3600_egpio(IPAQ_EGPIO_OPT_RESET, 1);
switch (skt->nr) {
case 0:
gpio_free(H3XXX_GPIO_PCMCIA_CD0);
gpio_free(H3XXX_GPIO_PCMCIA_IRQ0);
break;
case 1:
gpio_free(H3XXX_GPIO_PCMCIA_CD1);
gpio_free(H3XXX_GPIO_PCMCIA_IRQ1);
break;
}
}
static void
h3600_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state)
{
switch (skt->nr) {
case 0:
state->detect = !gpio_get_value(H3XXX_GPIO_PCMCIA_CD0);
state->ready = !!gpio_get_value(H3XXX_GPIO_PCMCIA_IRQ0);
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 = !gpio_get_value(H3XXX_GPIO_PCMCIA_CD1);
state->ready = !!gpio_get_value(H3XXX_GPIO_PCMCIA_IRQ1);
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;
}
assign_h3600_egpio(IPAQ_EGPIO_CARD_RESET, !!(state->flags & SS_RESET));
/* Silently ignore Vpp, output enable, speaker enable. */
return 0;
}
static void h3600_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
{
/* Enable CF bus: */
assign_h3600_egpio(IPAQ_EGPIO_OPT_NVRAM_ON, 1);
assign_h3600_egpio(IPAQ_EGPIO_OPT_ON, 1);
assign_h3600_egpio(IPAQ_EGPIO_OPT_RESET, 0);
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) {
assign_h3600_egpio(IPAQ_EGPIO_OPT_ON, 0);
assign_h3600_egpio(IPAQ_EGPIO_OPT_NVRAM_ON, 0);
/* hmm, does this suck power? */
assign_h3600_egpio(IPAQ_EGPIO_OPT_RESET, 1);
}
}
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;
}
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