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ARM: ux500: Move timer code to separate file 

Just split off the timer code to its own file so we have a
more fine-grained file tree.

Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Jonas Aaberg <jonas.aberg@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Jonas Aaberg 2011-09-14 09:10:54 +02:00 committed by Linus Walleij
parent 7ed00af7a9
commit 5f5663a436
3 changed files with 59 additions and 37 deletions
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2
arch/arm/mach-ux500/Makefile
View File

@ -3,7 +3,7 @@
#
obj-y := clock.o cpu.o devices.o devices-common.o \
id.o usb.o
id.o usb.o timer.o
obj-$(CONFIG_UX500_SOC_DB5500) += cpu-db5500.o dma-db5500.o
obj-$(CONFIG_UX500_SOC_DB8500) += cpu-db8500.o devices-db8500.o
obj-$(CONFIG_MACH_U8500) += board-mop500.o board-mop500-sdi.o \

36
arch/arm/mach-ux500/cpu.c
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@ -18,7 +18,6 @@
#include <asm/mach/map.h>
#include <asm/localtimer.h>
#include <plat/mtu.h>
#include <mach/hardware.h>
#include <mach/setup.h>
#include <mach/devices.h>
@ -120,38 +119,3 @@ static int ux500_l2x0_init(void)
}
early_initcall(ux500_l2x0_init);
#endif
static void __init ux500_timer_init(void)
{
#ifdef CONFIG_LOCAL_TIMERS
/* Setup the local timer base */
if (cpu_is_u5500())
twd_base = __io_address(U5500_TWD_BASE);
else if (cpu_is_u8500())
twd_base = __io_address(U8500_TWD_BASE);
else
ux500_unknown_soc();
#endif
if (cpu_is_u5500())
mtu_base = __io_address(U5500_MTU0_BASE);
else if (cpu_is_u8500ed())
mtu_base = __io_address(U8500_MTU0_BASE_ED);
else if (cpu_is_u8500())
mtu_base = __io_address(U8500_MTU0_BASE);
else
ux500_unknown_soc();
if (cpu_is_u8500())
clksrc_dbx500_timer_base = __io_address(U8500_PRCMU_TIMER_4_BASE);
else if (cpu_is_u5500())
clksrc_dbx500_timer_base = __io_address(U5500_PRCMU_TIMER_3_BASE);
else
ux500_unknown_soc();
nmdk_timer_init();
clksrc_dbx500_prcmu_init();
}
struct sys_timer ux500_timer = {
.init = ux500_timer_init,
};

58
arch/arm/mach-ux500/timer.c Normal file
View File

@ -0,0 +1,58 @@
/*
* Copyright (C) ST-Ericsson SA 2011
*
* License Terms: GNU General Public License v2
* Author: Mattias Wallin <mattias.wallin@stericsson.com> for ST-Ericsson
*/
#include <linux/io.h>
#include <linux/clksrc-dbx500-prcmu.h>
#include <asm/localtimer.h>
#include <plat/mtu.h>
#include <mach/setup.h>
#include <mach/hardware.h>
static void __init ux500_timer_init(void)
{
if (cpu_is_u5500()) {
#ifdef CONFIG_LOCAL_TIMERS
twd_base = __io_address(U5500_TWD_BASE);
#endif
mtu_base = __io_address(U5500_MTU0_BASE);
clksrc_dbx500_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_base = __io_address(U8500_MTU0_BASE);
clksrc_dbx500_timer_base = __io_address(U8500_PRCMU_TIMER_4_BASE);
} else {
ux500_unknown_soc();
}
/*
* Here we register the timerblocks active in the system.
* Localtimers (twd) is started when both cpu is up and running.
* MTU register a clocksource, clockevent and sched_clock.
* Since the MTU is located in the VAPE power domain
* it will be cleared in sleep which makes it unsuitable.
* We however need it as a timer tick (clockevent)
* during boot to calibrate delay until twd is started.
* RTC-RTT have problems as timer tick during boot since it is
* depending on delay which is not yet calibrated. RTC-RTT is in the
* always-on powerdomain and is used as clockevent instead of twd when
* sleeping.
* The PRCMU timer 4(3 for DB5500) register a clocksource and
* sched_clock with higher rating then MTU since is always-on.
*
*/
nmdk_timer_init();
clksrc_dbx500_prcmu_init();
}
struct sys_timer ux500_timer = {
.init = ux500_timer_init,
};