diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-08-08 11:38:42 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-08-08 11:38:42 -0700 |
commit | 49b75b87ce2dfbd99e59a50c3681b154d07e3a22 (patch) | |
tree | f14e1da19a13d87a512f9043c2f37fd75dd122b3 /arch/arm/mach-l7200/include/mach/time.h | |
parent | f1c7f79b6ab4f7ada002a0fae47f462ede6b6857 (diff) | |
parent | 097d9eb537ff4d88b74c3fe67392e27c478ca3c5 (diff) |
Merge branch 'for-linus-merged' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus-merged' of master.kernel.org:/home/rmk/linux-2.6-arm:
[ARM] 5177/1: arm/mach-sa1100/Makefile: remove CONFIG_SA1100_USB
[ARM] 5166/1: magician: add MAINTAINERS entry
[ARM] fix pnx4008 build errors
[ARM] Fix SMP booting with non-zero PHYS_OFFSET
[ARM] 5185/1: Fix spi num_chipselect for lubbock
[ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach
[ARM] Add support for arch/arm/mach-*/include and arch/arm/plat-*/include
[ARM] Remove asm/hardware.h, use asm/arch/hardware.h instead
[ARM] Eliminate useless includes of asm/mach-types.h
[ARM] Fix circular include dependency with IRQ headers
avr32: Use <mach/foo.h> instead of <asm/arch/foo.h>
avr32: Introduce arch/avr32/mach-*/include/mach
avr32: Move include/asm-avr32 to arch/avr32/include/asm
[ARM] sa1100_wdt: use reset_status to remember watchdog reset status
[ARM] pxa: introduce reset_status and clear_reset_status for driver's usage
[ARM] pxa: introduce reset.h for reset specific header information
Diffstat (limited to 'arch/arm/mach-l7200/include/mach/time.h')
-rw-r--r-- | arch/arm/mach-l7200/include/mach/time.h | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/arch/arm/mach-l7200/include/mach/time.h b/arch/arm/mach-l7200/include/mach/time.h new file mode 100644 index 00000000000..061771c2c2b --- /dev/null +++ b/arch/arm/mach-l7200/include/mach/time.h @@ -0,0 +1,73 @@ +/* + * arch/arm/mach-l7200/include/mach/time.h + * + * Copyright (C) 2000 Rob Scott (rscott@mtrob.fdns.net) + * Steve Hill (sjhill@cotw.com) + * + * Changelog: + * 01-02-2000 RS Created l7200 version, derived from rpc code + * 05-03-2000 SJH Complete rewrite + */ +#ifndef _ASM_ARCH_TIME_H +#define _ASM_ARCH_TIME_H + +#include <mach/irqs.h> + +/* + * RTC base register address + */ +#define RTC_BASE (IO_BASE_2 + 0x2000) + +/* + * RTC registers + */ +#define RTC_RTCDR (*(volatile unsigned char *) (RTC_BASE + 0x000)) +#define RTC_RTCMR (*(volatile unsigned char *) (RTC_BASE + 0x004)) +#define RTC_RTCS (*(volatile unsigned char *) (RTC_BASE + 0x008)) +#define RTC_RTCC (*(volatile unsigned char *) (RTC_BASE + 0x008)) +#define RTC_RTCDV (*(volatile unsigned char *) (RTC_BASE + 0x00c)) +#define RTC_RTCCR (*(volatile unsigned char *) (RTC_BASE + 0x010)) + +/* + * RTCCR register values + */ +#define RTC_RATE_32 0x00 /* 32 Hz tick */ +#define RTC_RATE_64 0x10 /* 64 Hz tick */ +#define RTC_RATE_128 0x20 /* 128 Hz tick */ +#define RTC_RATE_256 0x30 /* 256 Hz tick */ +#define RTC_EN_ALARM 0x01 /* Enable alarm */ +#define RTC_EN_TIC 0x04 /* Enable counter */ +#define RTC_EN_STWDOG 0x08 /* Enable watchdog */ + +/* + * Handler for RTC timer interrupt + */ +static irqreturn_t +timer_interrupt(int irq, void *dev_id) +{ + struct pt_regs *regs = get_irq_regs(); + do_timer(1); +#ifndef CONFIG_SMP + update_process_times(user_mode(regs)); +#endif + do_profile(regs); + RTC_RTCC = 0; /* Clear interrupt */ + + return IRQ_HANDLED; +} + +/* + * Set up RTC timer interrupt, and return the current time in seconds. + */ +void __init time_init(void) +{ + RTC_RTCC = 0; /* Clear interrupt */ + + timer_irq.handler = timer_interrupt; + + setup_irq(IRQ_RTC_TICK, &timer_irq); + + RTC_RTCCR = RTC_RATE_128 | RTC_EN_TIC; /* Set rate and enable timer */ +} + +#endif |