61 lines
1.9 KiB
C
61 lines
1.9 KiB
C
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/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (C) 2011 by Vladimir Zapolskiy <vz@mleia.com>
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*/
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#ifndef _LPC32XX_TIMER_H
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#define _LPC32XX_TIMER_H
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#include <asm/types.h>
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/* Timer/Counter Registers */
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struct timer_regs {
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u32 ir; /* Interrupt Register */
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u32 tcr; /* Timer Control Register */
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u32 tc; /* Timer Counter */
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u32 pr; /* Prescale Register */
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u32 pc; /* Prescale Counter */
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u32 mcr; /* Match Control Register */
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u32 mr[4]; /* Match Registers */
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u32 ccr; /* Capture Control Register */
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u32 cr[4]; /* Capture Registers */
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u32 emr; /* External Match Register */
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u32 reserved[12];
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u32 ctcr; /* Count Control Register */
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};
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/* Timer/Counter Interrupt Register bits */
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#define TIMER_IR_CR(n) (1 << ((n) + 4))
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#define TIMER_IR_MR(n) (1 << (n))
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/* Timer/Counter Timer Control Register bits */
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#define TIMER_TCR_COUNTER_RESET (1 << 1)
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#define TIMER_TCR_COUNTER_ENABLE (1 << 0)
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#define TIMER_TCR_COUNTER_DISABLE (0 << 0)
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/* Timer/Counter Match Control Register bits */
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#define TIMER_MCR_STOP(n) (1 << (3 * (n) + 2))
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#define TIMER_MCR_RESET(n) (1 << (3 * (n) + 1))
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#define TIMER_MCR_INTERRUPT(n) (1 << (3 * (n)))
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/* Timer/Counter Capture Control Register bits */
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#define TIMER_CCR_INTERRUPT(n) (1 << (3 * (n) + 2))
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#define TIMER_CCR_FALLING_EDGE(n) (1 << (3 * (n) + 1))
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#define TIMER_CCR_RISING_EDGE(n) (1 << (3 * (n)))
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/* Timer/Counter External Match Register bits */
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#define TIMER_EMR_EMC_TOGGLE(n) (0x3 << (2 * (n) + 4))
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#define TIMER_EMR_EMC_SET(n) (0x2 << (2 * (n) + 4))
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#define TIMER_EMR_EMC_CLEAR(n) (0x1 << (2 * (n) + 4))
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#define TIMER_EMR_EMC_NOTHING(n) (0x0 << (2 * (n) + 4))
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#define TIMER_EMR_EM(n) (1 << (n))
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/* Timer/Counter Count Control Register bits */
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#define TIMER_CTCR_INPUT(n) ((n) << 2)
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#define TIMER_CTCR_MODE_COUNTER_BOTH (0x3 << 0)
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#define TIMER_CTCR_MODE_COUNTER_FALLING (0x2 << 0)
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#define TIMER_CTCR_MODE_COUNTER_RISING (0x1 << 0)
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#define TIMER_CTCR_MODE_TIMER (0x0 << 0)
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#endif /* _LPC32XX_TIMER_H */
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