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ARM: shmobile: convert to twd_local_timer_register() interface 

Add support for the new smp_twd runtime registration interface
to the shmobile platforms, and remove the old compile-time support.

Cc: Magnus Damm <magnus.damm@gmail.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
Marc Zyngier 2012-01-10 19:44:19 +00:00
parent 1fcf3a6edd
commit 4200b16d58
7 changed files with 18 additions and 38 deletions
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1
arch/arm/mach-shmobile/Makefile
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@ -16,7 +16,6 @@ obj-$(CONFIG_ARCH_R8A7779) += setup-r8a7779.o clock-r8a7779.o intc-r8a7779.o
# SMP objects
smp-y := platsmp.o headsmp.o
smp-$(CONFIG_HOTPLUG_CPU) += hotplug.o
smp-$(CONFIG_LOCAL_TIMERS) += localtimer.o
smp-$(CONFIG_ARCH_SH73A0) += smp-sh73a0.o
smp-$(CONFIG_ARCH_R8A7779) += smp-r8a7779.o

2
arch/arm/mach-shmobile/include/mach/common.h
View File

@ -2,6 +2,8 @@
#define __ARCH_MACH_COMMON_H
extern struct sys_timer shmobile_timer;
struct twd_local_timer;
void shmobile_twd_init(struct twd_local_timer *twd_local_timer);
extern void shmobile_setup_console(void);
extern void shmobile_secondary_vector(void);
extern int shmobile_platform_cpu_kill(unsigned int cpu);

26
arch/arm/mach-shmobile/localtimer.c
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@ -1,26 +0,0 @@
/*
* SMP support for R-Mobile / SH-Mobile - local timer portion
*
* Copyright (C) 2010 Magnus Damm
*
* Based on vexpress, Copyright (C) 2002 ARM Ltd, 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 version 2 as
* published by the Free Software Foundation.
*/
#include <linux/init.h>
#include <linux/smp.h>
#include <linux/clockchips.h>
#include <asm/smp_twd.h>
#include <asm/localtimer.h>
/*
* Setup the local clock events for a CPU.
*/
int __cpuinit local_timer_setup(struct clock_event_device *evt)
{
evt->irq = 29;
twd_timer_setup(evt);
return 0;
}

1
arch/arm/mach-shmobile/platsmp.c
View File

@ -17,7 +17,6 @@
#include <linux/smp.h>
#include <linux/io.h>
#include <asm/hardware/gic.h>
#include <asm/localtimer.h>
#include <asm/mach-types.h>
#include <mach/common.h>

8
arch/arm/mach-shmobile/smp-r8a7779.c
View File

@ -64,6 +64,8 @@ static void __iomem *scu_base_addr(void)
static DEFINE_SPINLOCK(scu_lock);
static unsigned long tmp;
static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, 0xf0000600, 29);
static void modify_scu_cpu_psr(unsigned long set, unsigned long clr)
{
void __iomem *scu_base = scu_base_addr();
@ -82,11 +84,7 @@ unsigned int __init r8a7779_get_core_count(void)
{
void __iomem *scu_base = scu_base_addr();
#ifdef CONFIG_HAVE_ARM_TWD
/* twd_base needs to be initialized before percpu_timer_setup() */
twd_base = (void __iomem *)0xf0000600;
#endif
shmobile_twd_init(&twd_local_timer);
return scu_get_core_count(scu_base);
}

8
arch/arm/mach-shmobile/smp-sh73a0.c
View File

@ -42,6 +42,8 @@ static void __iomem *scu_base_addr(void)
static DEFINE_SPINLOCK(scu_lock);
static unsigned long tmp;
static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, 0xf0000600, 29);
static void modify_scu_cpu_psr(unsigned long set, unsigned long clr)
{
void __iomem *scu_base = scu_base_addr();
@ -60,11 +62,7 @@ unsigned int __init sh73a0_get_core_count(void)
{
void __iomem *scu_base = scu_base_addr();
#ifdef CONFIG_HAVE_ARM_TWD
/* twd_base needs to be initialized before percpu_timer_setup() */
twd_base = (void __iomem *)0xf0000600;
#endif
shmobile_twd_init(&twd_local_timer);
return scu_get_core_count(scu_base);
}

10
arch/arm/mach-shmobile/timer.c
View File

@ -20,6 +20,7 @@
*/
#include <linux/platform_device.h>
#include <asm/mach/time.h>
#include <asm/smp_twd.h>
static void __init shmobile_late_time_init(void)
{
@ -41,6 +42,15 @@ static void __init shmobile_timer_init(void)
late_time_init = shmobile_late_time_init;
}
void __init shmobile_twd_init(struct twd_local_timer *twd_local_timer)
{
#ifdef CONFIG_HAVE_ARM_TWD
int err = twd_local_timer_register(twd_local_timer);
if (err)
pr_err("twd_local_timer_register failed %d\n", err);
#endif
}
struct sys_timer shmobile_timer = {
.init = shmobile_timer_init,
};