84 строки
1.8 KiB
C
84 строки
1.8 KiB
C
|
/*
|
||
|
|
* Copyright (C) 2007,2008 Freescale Semiconductor, Inc. All rights reserved.
|
||
|
|
*
|
||
|
|
* Author: John Rigby <jrigby@freescale.com>
|
||
|
|
*
|
||
|
|
* Description:
|
||
|
|
* MPC512x Shared code
|
||
|
|
*
|
||
|
|
* This 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/kernel.h>
|
||
|
|
#include <linux/io.h>
|
||
|
|
#include <linux/irq.h>
|
||
|
|
#include <linux/of_platform.h>
|
||
|
|
|
||
|
|
#include <asm/machdep.h>
|
||
|
|
#include <asm/ipic.h>
|
||
|
|
#include <asm/prom.h>
|
||
|
|
#include <asm/time.h>
|
||
|
|
|
||
|
|
#include "mpc512x.h"
|
||
|
|
|
||
|
|
unsigned long
|
||
|
|
mpc512x_find_ips_freq(struct device_node *node)
|
||
|
|
{
|
||
|
|
struct device_node *np;
|
||
|
|
const unsigned int *p_ips_freq = NULL;
|
||
|
|
|
||
|
|
of_node_get(node);
|
||
|
|
while (node) {
|
||
|
|
p_ips_freq = of_get_property(node, "bus-frequency", NULL);
|
||
|
|
if (p_ips_freq)
|
||
|
|
break;
|
||
|
|
|
||
|
|
np = of_get_parent(node);
|
||
|
|
of_node_put(node);
|
||
|
|
node = np;
|
||
|
|
}
|
||
|
|
if (node)
|
||
|
|
of_node_put(node);
|
||
|
|
|
||
|
|
return p_ips_freq ? *p_ips_freq : 0;
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL(mpc512x_find_ips_freq);
|
||
|
|
|
||
|
|
void __init mpc512x_init_IRQ(void)
|
||
|
|
{
|
||
|
|
struct device_node *np;
|
||
|
|
|
||
|
|
np = of_find_compatible_node(NULL, NULL, "fsl,mpc5121-ipic");
|
||
|
|
if (!np)
|
||
|
|
return;
|
||
|
|
|
||
|
|
ipic_init(np, 0);
|
||
|
|
of_node_put(np);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Initialize the default interrupt mapping priorities,
|
||
|
|
* in case the boot rom changed something on us.
|
||
|
|
*/
|
||
|
|
ipic_set_default_priority();
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Nodes to do bus probe on, soc and localbus
|
||
|
|
*/
|
||
|
|
static struct of_device_id __initdata of_bus_ids[] = {
|
||
|
|
{ .compatible = "fsl,mpc5121-immr", },
|
||
|
|
{ .compatible = "fsl,mpc5121-localbus", },
|
||
|
|
{},
|
||
|
|
};
|
||
|
|
|
||
|
|
void __init mpc512x_declare_of_platform_devices(void)
|
||
|
|
{
|
||
|
|
if (of_platform_bus_probe(NULL, of_bus_ids, NULL))
|
||
|
|
printk(KERN_ERR __FILE__ ": "
|
||
|
|
"Error while probing of_platform bus\n");
|
||
|
|
}
|
||
|
|
|