gptimer.h
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/*
* Copyright (c) 2017, Cobham Gaisler AB
* All rights reserved.
*
* 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.
*
* 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 __GPTIMER_REGS_H_
#define __GPTIMER_REGS_H_
/*
* Register description for GPTIMER - General Purpose Timer Unit
*/
#include <stdint.h>
/* GPTIMER Timer instance */
struct gptimer_timer_regs {
uint32_t counter;
uint32_t reload;
uint32_t ctrl;
uint32_t latch;
};
/* A GPTIMER can have maximum of 7 subtimers. */
#define GPTIMER_MAX_SUBTIMERS 7
/* GPTIMER common registers */
struct gptimer_regs {
uint32_t scaler_value;
uint32_t scaler_reload;
uint32_t cfg;
uint32_t latch_cfg;
struct gptimer_timer_regs timer[GPTIMER_MAX_SUBTIMERS];
};
#define GPTIMER_CTRL_WN (1 << 7)
#define GPTIMER_CTRL_IP (1 << 4)
#define GPTIMER_CTRL_IE (1 << 3)
#define GPTIMER_CTRL_LD (1 << 2)
#define GPTIMER_CTRL_RS (1 << 1)
#define GPTIMER_CTRL_EN (1 << 0)
#define GPTIMER_CFG_EL (1 << 11)
#define GPTIMER_CFG_DF (1 << 9)
#define GPTIMER_CFG_SI (1 << 8)
#define GPTIMER_CFG_IRQ (0x1f << 3)
#define GPTIMER_CFG_TIMERS (7 << 0)
#endif