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/************************************************************************************
* arch/arm/src/imx/imx_timer.h
*
* Copyright (C) 2009 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************************************/
#ifndef __ARCH_ARM_IMX_TIMER_H
#define __ARCH_ARM_IMX_TIMER_H
/************************************************************************************
* Included Files
************************************************************************************/
/************************************************************************************
* Definitions
************************************************************************************/
/* Timer Register Offsets ***********************************************************/
#define TIMER_TCTL_OFFSET 0x0000 /* Timer control register */
#define TIMER_TPRER_OFFSET 0x0004 /* Timer prescaler register */
#define TIMER_TCMP_OFFSET 0x0008 /* Timer compare register */
#define TIMER_TCR_OFFSET 0x000c /* Timer capture register */
#define TIMER_TCN_OFFSET 0x0010 /* Timer counter regiser */
#define TIMER_TSTAT_OFFSET 0x0014 /* Timer status register */
/* Timer Register Addresses *********************************************************/
#define IMX_TIMER1_TCTL (IMX_TIMER1_VBASE + TIMER_TCTL_OFFSET)
#define IMX_TIMER1_TPRER (IMX_TIMER1_VBASE + TIMER_TPRER_OFFSET)
#define IMX_TIMER1_TCMP (IMX_TIMER1_VBASE + TIMER_TCMP_OFFSET)
#define IMX_TIMER1_TCR (IMX_TIMER1_VBASE + TIMER_TCR_OFFSET)
#define IMX_TIMER1_TCN (IMX_TIMER1_VBASE + TIMER_TCN_OFFSET)
#define IMX_TIMER1_TSTAT (IMX_TIMER1_VBASE + TIMER_TSTAT_OFFSET)
#define IMX_TIMER2_TCTL (IMX_TIMER2_VBASE + TIMER_TCTL_OFFSET)
#define IMX_TIMER2_TPRER (IMX_TIMER2_VBASE + TIMER_TPRER_OFFSET)
#define IMX_TIMER2_TCMP (IMX_TIMER2_VBASE + TIMER_TCMP_OFFSET)
#define IMX_TIMER2_TCR (IMX_TIMER2_VBASE + TIMER_TCR_OFFSET)
#define IMX_TIMER2_TCN (IMX_TIMER2_VBASE + TIMER_TCN_OFFSET)
#define IMX_TIMER2_TSTAT (IMX_TIMER2_VBASE + TIMER_TSTAT_OFFSET)
/* Timer Register Bit Definitions ***************************************************/
/* Timer Control Register */
#define TIMER_TCTL_TEN (1 << 0) /* Bit 0: Timer Enable */
#define TIMER_TCTL_CLKSOURCE_SHIFT 1 /* Bit 1-4: Clock Source */
#define TIMER_TCTL_CLKSOURCE_MASK (0x07 << TIMER_TCTL_CLKSOURCE_SHIFT)
#define TCTL_CLKSOURCE_STOPCOUNT (0x00 << TIMER_TCTL_CLKSOURCE_SHIFT)
#define TCTL_CLKSOURCE_PERCLK1 (0x01 << TIMER_TCTL_CLKSOURCE_SHIFT)
#define TCTL_CLKSOURCE_PERCLK1D16 (0x02 << TIMER_TCTL_CLKSOURCE_SHIFT)
#define TCTL_CLKSOURCE_TIN (0x03 << TIMER_TCTL_CLKSOURCE_SHIFT)
#define TCTL_CLKSOURCE_32KHX (0x04 << TIMER_TCTL_CLKSOURCE_SHIFT)
#define TIMER_TCTL_IRQEN (1 << 5) /* Bit 5: Interrupt Request Enable */
#define TIMER_TCTL_OM (1 << 6) /* Bit 6: Output Mode */
#define TIMER_TCTL_CAP (1 << 7) /* Bit 7: Capture Edge */
#define TIMER_TCTL_FRR (1 << 8) /* Bit 8: Free-Run/Reset */
#define TIMER_TCTL_SWR (1 << 15) /* Bit 15: Software Reset */
/* Timer Prescaler Register */
#define TIMER_TPRER_PRESCALER_SHIFT 0 /* Bits 0-7: Prescaler */
#define TIMER_TPRER_PRESCALER_MASK (0xff << TIMER_TPRER_PRESCALER_SHIFT)
/* Timer Status Register */
#define TIMER_TSTAT_COMP (1 << 0) /* Bit 0: Compare Event */
#define TIMER_TSTAT_CAPT (1 << 1) /* Bit 1: Capture Event */
/************************************************************************************
* Inline Functions
************************************************************************************/
#endif /* __ARCH_ARM_IMX_TIMER_H */
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