gp_timers.h
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上传日期:2009-04-28
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- /*
- * linux/include/asm-arm/arch-l7200/gp_timers.h
- *
- * Copyright (C) 2000 Steve Hill (sjhill@cotw.com)
- *
- * Changelog:
- * 07-28-2000 SJH Created file
- * 08-02-2000 SJH Used structure for registers
- */
- #ifndef _ASM_ARCH_GPTIMERS_H
- #define _ASM_ARCH_GPTIMERS_H
- #include <asm/arch/hardware.h>
- /*
- * Layout of L7200 general purpose timer registers
- */
- struct GPT_Regs {
- unsigned int TIMERLOAD;
- unsigned int TIMERVALUE;
- unsigned int TIMERCONTROL;
- unsigned int TIMERCLEAR;
- };
- #define GPT_BASE (IO_BASE_2 + 0x3000)
- #define l7200_timer1_regs ((volatile struct GPT_Regs *) (GPT_BASE))
- #define l7200_timer2_regs ((volatile struct GPT_Regs *) (GPT_BASE + 0x20))
- /*
- * General register values
- */
- #define GPT_PRESCALE_1 0x00000000
- #define GPT_PRESCALE_16 0x00000004
- #define GPT_PRESCALE_256 0x00000008
- #define GPT_MODE_FREERUN 0x00000000
- #define GPT_MODE_PERIODIC 0x00000040
- #define GPT_ENABLE 0x00000080
- #define GPT_BZTOG 0x00000100
- #define GPT_BZMOD 0x00000200
- #define GPT_LOAD_MASK 0x0000ffff
- #endif