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/*
* arch/ppc/syslib/ppc_sys.c
*
* PPC System library functions
*
* Maintainer: Kumar Gala <kumar.gala@freescale.com>
*
* Copyright 2005 Freescale Semiconductor Inc.
* Copyright 2005 MontaVista, Inc. by Vitaly Bordug <vbordug@ru.mvista.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#include <linux/string.h>
#include <asm/ppc_sys.h>
int (*ppc_sys_device_fixup) (struct platform_device * pdev);
static int ppc_sys_inited;
void __init identify_ppc_sys_by_id(u32 id)
{
unsigned int i = 0;
while (1) {
if ((ppc_sys_specs[i].mask & id) == ppc_sys_specs[i].value)
break;
i++;
}
cur_ppc_sys_spec = &ppc_sys_specs[i];
return;
}
void __init identify_ppc_sys_by_name(char *name)
{
unsigned int i = 0;
while (ppc_sys_specs[i].ppc_sys_name[0])
{
if (!strcmp(ppc_sys_specs[i].ppc_sys_name, name))
break;
i++;
}
cur_ppc_sys_spec = &ppc_sys_specs[i];
return;
}
static int __init count_sys_specs(void)
{
int i = 0;
while (ppc_sys_specs[i].ppc_sys_name[0])
i++;
return i;
}
static int __init find_chip_by_name_and_id(char *name, u32 id)
{
int ret = -1;
unsigned int i = 0;
unsigned int j = 0;
unsigned int dups = 0;
unsigned char matched[count_sys_specs()];
while (ppc_sys_specs[i].ppc_sys_name[0]) {
if (!strcmp(ppc_sys_specs[i].ppc_sys_name, name))
matched[j++] = i;
i++;
}
ret = i;
if (j != 0) {
for (i = 0; i < j; i++) {
if ((ppc_sys_specs[matched[i]].mask & id) ==
ppc_sys_specs[matched[i]].value) {
ret = matched[i];
dups++;
}
}
ret = (dups == 1) ? ret : (-1 * dups);
}
return ret;
}
void __init identify_ppc_sys_by_name_and_id(char *name, u32 id)
{
int i = find_chip_by_name_and_id(name, id);
BUG_ON(i < 0);
cur_ppc_sys_spec = &ppc_sys_specs[i];
}
/* Update all memory resources by paddr, call before platform_device_register */
void __init
ppc_sys_fixup_mem_resource(struct platform_device *pdev, phys_addr_t paddr)
{
int i;
for (i = 0; i < pdev->num_resources; i++) {
struct resource *r = &pdev->resource[i];
if ((r->flags & IORESOURCE_MEM) == IORESOURCE_MEM) {
r->start += paddr;
r->end += paddr;
}
}
}
/* Get platform_data pointer out of platform device, call before platform_device_register */
void *__init ppc_sys_get_pdata(enum ppc_sys_devices dev)
{
return ppc_sys_platform_devices[dev].dev.platform_data;
}
void ppc_sys_device_remove(enum ppc_sys_devices dev)
{
unsigned int i;
if (ppc_sys_inited) {
platform_device_unregister(&ppc_sys_platform_devices[dev]);
} else {
if (cur_ppc_sys_spec == NULL)
return;
for (i = 0; i < cur_ppc_sys_spec->num_devices; i++)
if (cur_ppc_sys_spec->device_list[i] == dev)
cur_ppc_sys_spec->device_list[i] = -1;
}
}
static int __init ppc_sys_init(void)
{
unsigned int i, dev_id, ret = 0;
BUG_ON(cur_ppc_sys_spec == NULL);
for (i = 0; i < cur_ppc_sys_spec->num_devices; i++) {
dev_id = cur_ppc_sys_spec->device_list[i];
if (dev_id != -1) {
if (ppc_sys_device_fixup != NULL)
ppc_sys_device_fixup(&ppc_sys_platform_devices
[dev_id]);
if (platform_device_register
(&ppc_sys_platform_devices[dev_id])) {
ret = 1;
printk(KERN_ERR
"unable to register device %d\n",
dev_id);
}
}
}
ppc_sys_inited = 1;
return ret;
}
subsys_initcall(ppc_sys_init);
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