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powerpc/mpc5121: Add generic board support for MPC5121 platforms

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Move shared code from mpc5121_ads.c to new file mpc512x_shared.c
- mpc512x_find_ips_freq -> unchanged
- contents of mpc5121_ads_init_IRQ -> mpc512x_init_IRQ
  - looking for fsl,mpc5121-ipic instead of fsl,ipic
- mpc5121_ads_declare_of_platform_devices -> mpc5121_declare_of_platform_devices
  - and use compatible for lookup instead of node name

Add new generic board setup mpc5121_generic.c

Signed-off-by: John Rigby <jrigby@freescale.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
This commit is contained in:
John Rigby 2008-07-09 14:54:03 -06:00 committed by Grant Likely
parent 137e95906e
commit fb1803224e
6 changed files with 177 additions and 63 deletions
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15
arch/powerpc/platforms/512x/Kconfig
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@ -3,12 +3,10 @@ config PPC_MPC512x
select FSL_SOC
select IPIC
select PPC_CLOCK
default n
config PPC_MPC5121
bool
select PPC_MPC512x
default n
config MPC5121_ADS
bool "Freescale MPC5121E ADS"
@ -17,4 +15,15 @@ config MPC5121_ADS
select PPC_MPC5121
help
This option enables support for the MPC5121E ADS board.
default n
config MPC5121_GENERIC
bool "Generic support for simple MPC5121 based boards"
depends on PPC_MULTIPLATFORM && PPC32
select DEFAULT_UIMAGE
select PPC_MPC5121
help
This option enables support for simple MPC5121 based boards
which do not need custom platform specific setup.
Compatible boards include: Protonic LVT base boards (ZANMCU
and VICVT2).

3
arch/powerpc/platforms/512x/Makefile
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@ -1,5 +1,6 @@
#
# Makefile for the Freescale PowerPC 512x linux kernel.
#
obj-y += clock.o
obj-y += clock.o mpc512x_shared.o
obj-$(CONFIG_MPC5121_ADS) += mpc5121_ads.o
obj-$(CONFIG_MPC5121_GENERIC) += mpc5121_generic.o

64
arch/powerpc/platforms/512x/mpc5121_ads.c
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@ -1,5 +1,5 @@
/*
* Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved.
* Copyright (C) 2007, 2008 Freescale Semiconductor, Inc. All rights reserved.
*
* Author: John Rigby, <jrigby@freescale.com>, Thur Mar 29 2007
*
@ -15,7 +15,6 @@
#include <linux/kernel.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/of_platform.h>
#include <asm/machdep.h>
@ -23,65 +22,11 @@
#include <asm/prom.h>
#include <asm/time.h>
/**
* mpc512x_find_ips_freq - Find the IPS bus frequency for a device
* @node: device node
*
* Returns IPS bus frequency, or 0 if the bus frequency cannot be found.
*/
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);
static struct of_device_id __initdata of_bus_ids[] = {
{ .name = "soc", },
{ .name = "localbus", },
{},
};
static void __init mpc5121_ads_declare_of_platform_devices(void)
{
/* Find every child of the SOC node and add it to of_platform */
if (of_platform_bus_probe(NULL, of_bus_ids, NULL))
printk(KERN_ERR __FILE__ ": "
"Error while probing of_platform bus\n");
}
#include "mpc512x.h"
static void __init mpc5121_ads_init_IRQ(void)
{
struct device_node *np;
np = of_find_compatible_node(NULL, NULL, "fsl,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();
mpc512x_init_IRQ();
}
/*
@ -97,7 +42,8 @@ static int __init mpc5121_ads_probe(void)
define_machine(mpc5121_ads) {
.name = "MPC5121 ADS",
.probe = mpc5121_ads_probe,
.init = mpc5121_ads_declare_of_platform_devices,
.setup_arch = mpc5121_ads_setup_arch,
.init = mpc512x_declare_of_platform_devices,
.init_IRQ = mpc5121_ads_init_IRQ,
.get_irq = ipic_get_irq,
.calibrate_decr = generic_calibrate_decr,

58
arch/powerpc/platforms/512x/mpc5121_generic.c Normal file
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@ -0,0 +1,58 @@
/*
* Copyright (C) 2007,2008 Freescale Semiconductor, Inc. All rights reserved.
*
* Author: John Rigby, <jrigby@freescale.com>
*
* Description:
* MPC5121 SoC setup
*
* 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/of_platform.h>
#include <asm/machdep.h>
#include <asm/ipic.h>
#include <asm/prom.h>
#include <asm/time.h>
#include "mpc512x.h"
/*
* list of supported boards
*/
static char *board[] __initdata = {
"prt,prtlvt",
NULL
};
/*
* Called very early, MMU is off, device-tree isn't unflattened
*/
static int __init mpc5121_generic_probe(void)
{
unsigned long node = of_get_flat_dt_root();
int i = 0;
while (board[i]) {
if (of_flat_dt_is_compatible(node, board[i]))
break;
i++;
}
return board[i] != NULL;
}
define_machine(mpc5121_generic) {
.name = "MPC5121 generic",
.probe = mpc5121_generic_probe,
.init = mpc512x_declare_of_platform_devices,
.init_IRQ = mpc512x_init_IRQ,
.get_irq = ipic_get_irq,
.calibrate_decr = generic_calibrate_decr,
};

17
arch/powerpc/platforms/512x/mpc512x.h Normal file
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@ -0,0 +1,17 @@
/*
* Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved.
*
* 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.
*
* Prototypes for MPC512x shared code
*/
#ifndef __MPC512X_H__
#define __MPC512X_H__
extern unsigned long mpc512x_find_ips_freq(struct device_node *node);
extern void __init mpc512x_init_IRQ(void);
void __init mpc512x_declare_of_platform_devices(void);
#endif /* __MPC512X_H__ */

83
arch/powerpc/platforms/512x/mpc512x_shared.c Normal file
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@ -0,0 +1,83 @@
/*
* 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");
}