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/*
* Copyright (C) 2011 by Vladimir Zapolskiy <vz@mleia.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*/
#ifndef _LPC32XX_TIMER_H
#define _LPC32XX_TIMER_H
#include <asm/types.h>
/* Timer/Counter Registers */
struct timer_regs {
u32 ir; /* Interrupt Register */
u32 tcr; /* Timer Control Register */
u32 tc; /* Timer Counter */
u32 pr; /* Prescale Register */
u32 pc; /* Prescale Counter */
u32 mcr; /* Match Control Register */
u32 mr[4]; /* Match Registers */
u32 ccr; /* Capture Control Register */
u32 cr[4]; /* Capture Registers */
u32 emr; /* External Match Register */
u32 reserved[12];
u32 ctcr; /* Count Control Register */
};
/* Timer/Counter Interrupt Register bits */
#define TIMER_IR_CR(n) (1 << ((n) + 4))
#define TIMER_IR_MR(n) (1 << (n))
/* Timer/Counter Timer Control Register bits */
#define TIMER_TCR_COUNTER_RESET (1 << 1)
#define TIMER_TCR_COUNTER_ENABLE (1 << 0)
#define TIMER_TCR_COUNTER_DISABLE (0 << 0)
/* Timer/Counter Match Control Register bits */
#define TIMER_MCR_STOP(n) (1 << (3 * (n) + 2))
#define TIMER_MCR_RESET(n) (1 << (3 * (n) + 1))
#define TIMER_MCR_INTERRUPT(n) (1 << (3 * (n)))
/* Timer/Counter Capture Control Register bits */
#define TIMER_CCR_INTERRUPT(n) (1 << (3 * (n) + 2))
#define TIMER_CCR_FALLING_EDGE(n) (1 << (3 * (n) + 1))
#define TIMER_CCR_RISING_EDGE(n) (1 << (3 * (n)))
/* Timer/Counter External Match Register bits */
#define TIMER_EMR_EMC_TOGGLE(n) (0x3 << (2 * (n) + 4))
#define TIMER_EMR_EMC_SET(n) (0x2 << (2 * (n) + 4))
#define TIMER_EMR_EMC_CLEAR(n) (0x1 << (2 * (n) + 4))
#define TIMER_EMR_EMC_NOTHING(n) (0x0 << (2 * (n) + 4))
#define TIMER_EMR_EM(n) (1 << (n))
/* Timer/Counter Count Control Register bits */
#define TIMER_CTCR_INPUT(n) ((n) << 2)
#define TIMER_CTCR_MODE_COUNTER_BOTH (0x3 << 0)
#define TIMER_CTCR_MODE_COUNTER_FALLING (0x2 << 0)
#define TIMER_CTCR_MODE_COUNTER_RISING (0x1 << 0)
#define TIMER_CTCR_MODE_TIMER (0x0 << 0)
#endif /* _LPC32XX_TIMER_H */
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