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| author | Thomas Gleixner <tglx@linutronix.de> | 2011-06-09 13:08:28 +0000 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2011-07-01 10:37:14 +0200 |
| commit | 8560a6cfc9818edde1fd8677961714b264ffa03d (patch) | |
| tree | 9c15f28f69742e834c1c796950a27535305cd2f0 | |
| parent | 2d02612f61cc15b2025c90e32ed4a43eaa6753cd (diff) | |
| download | talos-obmc-linux-8560a6cfc9818edde1fd8677961714b264ffa03d.tar.gz talos-obmc-linux-8560a6cfc9818edde1fd8677961714b264ffa03d.zip | |
arm: Footbridge: Use common i8253 clockevent
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: John Stultz <john.stultz@linaro.org>
Link: http://lkml.kernel.org/r/20110609130622.241312122@linutronix.de
| -rw-r--r-- | arch/arm/mach-footbridge/Kconfig | 1 | ||||
| -rw-r--r-- | arch/arm/mach-footbridge/isa-timer.c | 55 |
2 files changed, 4 insertions, 52 deletions
diff --git a/arch/arm/mach-footbridge/Kconfig b/arch/arm/mach-footbridge/Kconfig index 46adca068f2c..dc26fff22cf0 100644 --- a/arch/arm/mach-footbridge/Kconfig +++ b/arch/arm/mach-footbridge/Kconfig @@ -5,6 +5,7 @@ menu "Footbridge Implementations" config ARCH_CATS bool "CATS" select CLKSRC_I8253 + select CLKEVT_I8253 select FOOTBRIDGE_HOST select ISA select ISA_DMA diff --git a/arch/arm/mach-footbridge/isa-timer.c b/arch/arm/mach-footbridge/isa-timer.c index 71fd96df7f73..c40bb415f4b5 100644 --- a/arch/arm/mach-footbridge/isa-timer.c +++ b/arch/arm/mach-footbridge/isa-timer.c @@ -5,12 +5,10 @@ * Copyright (C) 1998 Phil Blundell */ #include <linux/clockchips.h> -#include <linux/clocksource.h> #include <linux/i8253.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/irq.h> -#include <linux/io.h> #include <linux/spinlock.h> #include <linux/timex.h> @@ -19,48 +17,6 @@ #include "common.h" -static void pit_set_mode(enum clock_event_mode mode, - struct clock_event_device *evt) -{ - unsigned long flags; - - raw_local_irq_save(flags); - - switch (mode) { - case CLOCK_EVT_MODE_PERIODIC: - outb_p(0x34, PIT_MODE); - outb_p(PIT_LATCH & 0xff, PIT_CH0); - outb_p(PIT_LATCH >> 8, PIT_CH0); - break; - - case CLOCK_EVT_MODE_SHUTDOWN: - case CLOCK_EVT_MODE_UNUSED: - outb_p(0x30, PIT_MODE); - outb_p(0, PIT_CH0); - outb_p(0, PIT_CH0); - break; - - case CLOCK_EVT_MODE_ONESHOT: - case CLOCK_EVT_MODE_RESUME: - break; - } - local_irq_restore(flags); -} - -static int pit_set_next_event(unsigned long delta, - struct clock_event_device *evt) -{ - return 0; -} - -static struct clock_event_device pit_ce = { - .name = "pit", - .features = CLOCK_EVT_FEAT_PERIODIC, - .set_mode = pit_set_mode, - .set_next_event = pit_set_next_event, - .shift = 32, -}; - static irqreturn_t pit_timer_interrupt(int irq, void *dev_id) { struct clock_event_device *ce = dev_id; @@ -72,20 +28,15 @@ static struct irqaction pit_timer_irq = { .name = "pit", .handler = pit_timer_interrupt, .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL, - .dev_id = &pit_ce, + .dev_id = &i8253_clockevent, }; static void __init isa_timer_init(void) { - pit_ce.cpumask = cpumask_of(smp_processor_id()); - pit_ce.mult = div_sc(PIT_TICK_RATE, NSEC_PER_SEC, pit_ce.shift); - pit_ce.max_delta_ns = clockevent_delta2ns(0x7fff, &pit_ce); - pit_ce.min_delta_ns = clockevent_delta2ns(0x000f, &pit_ce); - clocksource_i8253_init(); - setup_irq(pit_ce.irq, &pit_timer_irq); - clockevents_register_device(&pit_ce); + setup_irq(i8253_clockevent.irq, &pit_timer_irq); + clockevent_i8253_init(false); } struct sys_timer isa_timer = { |
