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ARM: ux500: convert to twd_local_timer_register() interface

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Add support for the new smp_twd runtime registration interface
to the ux500 platforms, and remove the old compile-time support.

Acked-by: Linus Walleij <linus.walleij@linaro.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 4200b16d58
commit 08efd6ca6f
4 changed files with 25 additions and 38 deletions
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1
arch/arm/mach-ux500/Makefile
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@ -15,7 +15,6 @@ obj-$(CONFIG_MACH_U8500) += board-mop500.o board-mop500-sdi.o \
obj-$(CONFIG_MACH_U5500) += board-u5500.o board-u5500-sdi.o
obj-$(CONFIG_SMP) += platsmp.o headsmp.o
obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o
obj-$(CONFIG_LOCAL_TIMERS) += localtimer.o
obj-$(CONFIG_U5500_MODEM_IRQ) += modem-irq-db5500.o
obj-$(CONFIG_U5500_MBOX) += mbox-db5500.o

1
arch/arm/mach-ux500/cpu.c
View File

@ -14,7 +14,6 @@
#include <asm/hardware/gic.h>
#include <asm/mach/map.h>
#include <asm/localtimer.h>
#include <mach/hardware.h>
#include <mach/setup.h>

29
arch/arm/mach-ux500/localtimer.c
View File

@ -1,29 +0,0 @@
/*
* Copyright (C) 2008-2009 ST-Ericsson
* Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
*
* This file is heavily based on relaview platform, almost a copy.
*
* Copyright (C) 2002 ARM Ltd.
*
* 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/irq.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 = IRQ_LOCALTIMER;
twd_timer_setup(evt);
return 0;
}

32
arch/arm/mach-ux500/timer.c
View File

@ -8,28 +8,45 @@
#include <linux/errno.h>
#include <linux/clksrc-dbx500-prcmu.h>
#include <asm/localtimer.h>
#include <asm/smp_twd.h>
#include <plat/mtu.h>
#include <mach/setup.h>
#include <mach/hardware.h>
#ifdef CONFIG_HAVE_ARM_TWD
static DEFINE_TWD_LOCAL_TIMER(u5500_twd_local_timer,
U5500_TWD_BASE, IRQ_LOCALTIMER);
static DEFINE_TWD_LOCAL_TIMER(u8500_twd_local_timer,
U8500_TWD_BASE, IRQ_LOCALTIMER);
static void __init ux500_twd_init(void)
{
struct twd_local_timer *twd_local_timer;
int err;
twd_local_timer = cpu_is_u5500() ? &u5500_twd_local_timer :
&u8500_twd_local_timer;
err = twd_local_timer_register(twd_local_timer);
if (err)
pr_err("twd_local_timer_register failed %d\n", err);
}
#else
#define ux500_twd_init() do { } while(0)
#endif
static void __init ux500_timer_init(void)
{
void __iomem *mtu_timer_base;
void __iomem *prcmu_timer_base;
int err;
if (cpu_is_u5500()) {
#ifdef CONFIG_LOCAL_TIMERS
twd_base = __io_address(U5500_TWD_BASE);
#endif
mtu_timer_base = __io_address(U5500_MTU0_BASE);
prcmu_timer_base = __io_address(U5500_PRCMU_TIMER_3_BASE);
} else if (cpu_is_u8500()) {
#ifdef CONFIG_LOCAL_TIMERS
twd_base = __io_address(U8500_TWD_BASE);
#endif
mtu_timer_base = __io_address(U8500_MTU0_BASE);
prcmu_timer_base = __io_address(U8500_PRCMU_TIMER_4_BASE);
} else {
@ -55,6 +72,7 @@ static void __init ux500_timer_init(void)
nmdk_timer_init(mtu_timer_base);
clksrc_dbx500_prcmu_init(prcmu_timer_base);
ux500_twd_init();
}
static void ux500_timer_reset(void)