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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2011 by Amaury Pouly
*
* 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#ifndef TIMROT_IMX233_H
#define TIMROT_IMX233_H
#include "system.h"
#include "cpu.h"
#include "icoll-imx233.h"
/* WARNING timrot code assumes APBX is running at 24MHz */
/* list of timers */
enum
{
TIMER_TICK, /* for tick task */
TIMER_USER, /* for user timer */
TIMER_WATCHDOG, /* for watchdog */
};
/* timer sources */
enum imx233_timrot_src_t
{
TIMER_SRC_24MHZ,
TIMER_SRC_12MHZ,
TIMER_SRC_6MHZ,
TIMER_SRC_3MHZ,
TIMER_SRC_32KHZ,
TIMER_SRC_8KHZ,
TIMER_SRC_4KHZ,
TIMER_SRC_1KHZ,
TIMER_SRC_STOP
};
struct imx233_timrot_info_t
{
unsigned fixed_count, run_count;
unsigned src;
unsigned prescale;
bool reload;
bool polarity;
bool irqen;
};
typedef void (*imx233_timer_fn_t)(void);
/* maximum count for non-periodic timers, add one for periodic timers */
#define IMX233_TIMROT_MAX_COUNT 0xffff
void imx233_timrot_init(void);
/* low-level function all-in-one function */
void imx233_timrot_setup(unsigned timer_nr, bool reload, unsigned count,
unsigned src, unsigned prescale, bool polarity, imx233_timer_fn_t fn);
/* change interrupt priority */
void imx233_timrot_set_priority(unsigned timer_nr, unsigned prio);
/* simple setup function */
void imx233_timrot_setup_simple(unsigned timer_nr, bool periodic, unsigned count,
enum imx233_timrot_src_t src, imx233_timer_fn_t fn);
/* get timer count */
unsigned imx233_timrot_get_count(unsigned timer_nr);
/* update timer running count */
struct imx233_timrot_info_t imx233_timrot_get_info(unsigned timer_nr);
#endif /* TIMROT_IMX233_H */
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