dev-pcmcia.c
2.98 KB
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/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
*/
#include <linux/init.h>
#include <linux/kernel.h>
#include <asm/bootinfo.h>
#include <linux/platform_device.h>
#include <bcm63xx_cs.h>
#include <bcm63xx_cpu.h>
#include <bcm63xx_dev_pcmcia.h>
#include <bcm63xx_io.h>
#include <bcm63xx_regs.h>
static struct resource pcmcia_resources[] = {
/* pcmcia registers */
{
/* start & end filled at runtime */
.flags = IORESOURCE_MEM,
},
/* pcmcia memory zone resources */
{
.start = BCM_PCMCIA_COMMON_BASE_PA,
.end = BCM_PCMCIA_COMMON_END_PA,
.flags = IORESOURCE_MEM,
},
{
.start = BCM_PCMCIA_ATTR_BASE_PA,
.end = BCM_PCMCIA_ATTR_END_PA,
.flags = IORESOURCE_MEM,
},
{
.start = BCM_PCMCIA_IO_BASE_PA,
.end = BCM_PCMCIA_IO_END_PA,
.flags = IORESOURCE_MEM,
},
/* PCMCIA irq */
{
/* start filled at runtime */
.flags = IORESOURCE_IRQ,
},
/* declare PCMCIA IO resource also */
{
.start = BCM_PCMCIA_IO_BASE_PA,
.end = BCM_PCMCIA_IO_END_PA,
.flags = IORESOURCE_IO,
},
};
static struct bcm63xx_pcmcia_platform_data pd;
static struct platform_device bcm63xx_pcmcia_device = {
.name = "bcm63xx_pcmcia",
.id = 0,
.num_resources = ARRAY_SIZE(pcmcia_resources),
.resource = pcmcia_resources,
.dev = {
.platform_data = &pd,
},
};
static int __init config_pcmcia_cs(unsigned int cs,
u32 base, unsigned int size)
{
int ret;
ret = bcm63xx_set_cs_status(cs, 0);
if (!ret)
ret = bcm63xx_set_cs_base(cs, base, size);
if (!ret)
ret = bcm63xx_set_cs_status(cs, 1);
return ret;
}
static const struct {
unsigned int cs;
unsigned int base;
unsigned int size;
} pcmcia_cs[3] __initconst = {
{
.cs = MPI_CS_PCMCIA_COMMON,
.base = BCM_PCMCIA_COMMON_BASE_PA,
.size = BCM_PCMCIA_COMMON_SIZE
},
{
.cs = MPI_CS_PCMCIA_ATTR,
.base = BCM_PCMCIA_ATTR_BASE_PA,
.size = BCM_PCMCIA_ATTR_SIZE
},
{
.cs = MPI_CS_PCMCIA_IO,
.base = BCM_PCMCIA_IO_BASE_PA,
.size = BCM_PCMCIA_IO_SIZE
},
};
int __init bcm63xx_pcmcia_register(void)
{
int ret, i;
if (!BCMCPU_IS_6348() && !BCMCPU_IS_6358())
return 0;
/* use correct pcmcia ready gpio depending on processor */
switch (bcm63xx_get_cpu_id()) {
case BCM6348_CPU_ID:
pd.ready_gpio = 22;
break;
case BCM6358_CPU_ID:
pd.ready_gpio = 18;
break;
default:
return -ENODEV;
}
pcmcia_resources[0].start = bcm63xx_regset_address(RSET_PCMCIA);
pcmcia_resources[0].end = pcmcia_resources[0].start +
RSET_PCMCIA_SIZE - 1;
pcmcia_resources[4].start = bcm63xx_get_irq_number(IRQ_PCMCIA);
/* configure pcmcia chip selects */
for (i = 0; i < 3; i++) {
ret = config_pcmcia_cs(pcmcia_cs[i].cs,
pcmcia_cs[i].base,
pcmcia_cs[i].size);
if (ret)
goto out_err;
}
return platform_device_register(&bcm63xx_pcmcia_device);
out_err:
printk(KERN_ERR "unable to set pcmcia chip select\n");
return ret;
}