/*
* PPC System library functions
*
* Maintainer: Kumar Gala <galak@kernel.crashing.org>
*
* 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 <linux/bootmem.h>
#include <asm/ppc_sys.h>
int (*ppc_sys_device_fixup) (struct platform_device * pdev);
static int ppc_sys_inited;
static int ppc_sys_func_inited;
static const char *ppc_sys_func_names[] = {
[PPC_SYS_FUNC_DUMMY] = "dummy",
[PPC_SYS_FUNC_ETH] = "eth",
[PPC_SYS_FUNC_UART] = "uart",
[PPC_SYS_FUNC_HLDC] = "hldc",
[PPC_SYS_FUNC_USB] = "usb",
[PPC_SYS_FUNC_IRDA] = "irda",
};
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;
}
}
/* Platform-notify mapping
* Helper function for BSP code to assign board-specific platfom-divice bits
*/
void platform_notify_map(const struct platform_notify_dev_map *map,
struct device *dev)
{
struct platform_device *pdev;
int len, idx;
const char *s;
/* do nothing if no device or no bus_id */
if (!dev || !dev->bus_id)
return;
/* call per device map */
while (map->bus_id != NULL) {
idx = -1;
s = strrchr(dev->bus_id, '.');
if (s != NULL) {
idx = (int)simple_strtol(s + 1, NULL, 10);
len = s - dev->bus_id;
} else {
s = dev->bus_id;
len = strlen(dev->bus_id);
}
if (!strncmp(dev->bus_id, map->bus_id, len)) {
pdev = container_of(dev, struct platform_device, dev);
map->rtn(pdev, idx);
}
map++;
}
}
/*
Function assignment stuff.
Intended to work as follows:
the device name defined in foo_devices.c will be concatenated with :"func",
where func is string map of respective function from platfom_device_func enum
The PPC_SYS_FUNC_DUMMY function is intended to remove all assignments, making the device to appear
in platform bus with unmodified name.
*/
/*
Here we'll replace .name pointers with fixed-lenght strings
Hereby, this should be called *before* any func stuff triggeded.
*/
void ppc_sys_device_initfunc(void)
{
int i;
const char *name;
static char new_names[NUM_PPC_SYS_DEVS][BUS_ID_SIZE];
enum ppc_sys_devices cur_dev;
/* If inited yet, do nothing */
if (ppc_sys_func_inited)
return;
for (i = 0; i < cur_ppc_sys_spec->num_devices; i++) {
if ((cur_dev = cur_ppc_sys_spec->device_list[i]) < 0)
continue;
if (ppc_sys_platform_devices[cur_dev].name) {
/*backup name */
name = ppc_sys_platform_devices[cur_dev].name;
strlcpy(new_names[i], name, BUS_ID_SIZE);
ppc_sys_platform_devices[cur_dev].name = new_names[i];
}
}
ppc_sys_func_inited = 1;
}
/*The "engine" of the func stuff. Here we either concat specified function string description
to the name, or remove it if PPC_SYS_FUNC_DUMMY parameter is passed here*/
void ppc_sys_device_setfunc(enum ppc_sys_devices dev,
enum platform_device_func func)
{
char *s;
char *name = (char *)ppc_sys_platform_devices[dev].name;
char tmp[BUS_ID_SIZE];
if (!ppc_sys_func_inited) {
printk(KERN_ERR "Unable to alter function - not inited!\n");
return;
}
if (ppc_sys_inited) {
platform_device_unregister(&ppc_sys_platform_devices[dev]);
}
if ((s = (char *)strchr(name, ':')) != NULL) { /* reassign */
/* Either change the name after ':' or remove func modifications */
if (func != PPC_SYS_FUNC_DUMMY)
strlcpy(s + 1, ppc_sys_func_names[func], BUS_ID_SIZE);
else
*s = 0;
} else if (func != PPC_SYS_FUNC_DUMMY) {
/* do assignment if it is not just "clear" request */
sprintf(tmp, "%s:%s", name, ppc_sys_func_names[func]);
strlcpy(name, tmp, BUS_ID_SIZE);
}
if (ppc_sys_inited) {
platform_device_register(&ppc_sys_platform_devices[dev]);
}
}
void ppc_sys_device_disable(enum ppc_sys_devices dev)
{
BUG_ON(cur_ppc_sys_spec == NULL);
/*Check if it is enabled*/
if(!(cur_ppc_sys_spec->config[dev] & PPC_SYS_CONFIG_DISABLED)) {
if (ppc_sys_inited) {
platform_device_unregister(&ppc_sys_platform_devices[dev]);
}
cur_ppc_sys_spec->config[dev] |= PPC_SYS_CONFIG_DISABLED;
}
}
void ppc_sys_device_enable(enum ppc_sys_devices dev)
{
BUG_ON(cur_ppc_sys_spec == NULL);
/*Check if it is disabled*/
if(cur_ppc_sys_spec->config[dev] & PPC_SYS_CONFIG_DISABLED) {
if (ppc_sys_inited) {
platform_device_register(&ppc_sys_platform_devices[dev]);
}
cur_ppc_sys_spec->config[dev] &= ~PPC_SYS_CONFIG_DISABLED;
}
}
void ppc_sys_device_enable_all(void)
{
enum ppc_sys_devices cur_dev;
int i;
for (i = 0; i < cur_ppc_sys_spec->num_devices; i++) {
cur_dev = cur_ppc_sys_spec->device_list[i];
ppc_sys_device_enable(cur_dev);
}
}
void ppc_sys_device_disable_all(void)
{
enum ppc_sys_devices cur_dev;
int i;
for (i = 0; i < cur_ppc_sys_spec->num_devices; i++) {
cur_dev = cur_ppc_sys_spec->device_list[i];
ppc_sys_device_disable(cur_dev);
}
}
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) &&
!(cur_ppc_sys_spec->config[dev_id] & PPC_SYS_CONFIG_DISABLED)) {
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);
