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arch
arm
mach-h720x
cpu-h7201.c
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1
/*
2
* linux/arch/arm/mach-h720x/cpu-h7201.c
3
*
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* Copyright (C) 2003 Thomas Gleixner <
[email protected]
>
5
* 2003 Robert Schwebel <
[email protected]
>
6
* 2004 Sascha Hauer <
[email protected]
>
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*
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* processor specific stuff for the Hynix h7201
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#include <
linux/init.h
>
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#include <
linux/interrupt.h
>
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#include <linux/module.h>
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#include <asm/types.h>
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#include <mach/hardware.h>
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#include <asm/irq.h>
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#include <mach/irqs.h>
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#include <
asm/mach/irq.h
>
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#include <
asm/mach/time.h
>
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#include "
common.h
"
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/*
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* Timer interrupt handler
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*/
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static
irqreturn_t
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h7201_timer_interrupt(
int
irq,
void
*
dev_id
)
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{
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CPU_REG
(
TIMER_VIRT
,
TIMER_TOPSTAT
);
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timer_tick
();
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return
IRQ_HANDLED
;
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}
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static
struct
irqaction
h7201_timer_irq = {
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.name =
"h7201 Timer Tick"
,
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.flags =
IRQF_DISABLED
|
IRQF_TIMER
|
IRQF_IRQPOLL
,
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.handler = h7201_timer_interrupt,
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};
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/*
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* Setup TIMER0 as system timer
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*/
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void
__init
h7201_init_time
(
void
)
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{
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CPU_REG
(
TIMER_VIRT
,
TM0_PERIOD
) =
LATCH
;
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CPU_REG
(
TIMER_VIRT
,
TM0_CTRL
) =
TM_RESET
;
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CPU_REG
(
TIMER_VIRT
,
TM0_CTRL
) =
TM_REPEAT
|
TM_START
;
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CPU_REG
(
TIMER_VIRT
,
TIMER_TOPCTRL
) =
ENABLE_TM0_INTR
|
TIMER_ENABLE_BIT
;
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setup_irq
(
IRQ_TIMER0
, &h7201_timer_irq);
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}
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struct
sys_timer
h7201_timer
= {
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.init =
h7201_init_time
,
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.offset =
h720x_gettimeoffset
,
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};
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