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/*
*
* (C) Copyright 2007
* Sascha Hauer, Pengutronix
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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.
*
*/
#include <common.h>
#include <init.h>
#include <clock.h>
#include <mach/netx-regs.h>
uint64_t netx_clocksource_read(void)
{
return GPIO_REG(GPIO_COUNTER_CURRENT(0));
}
static struct clocksource cs = {
.read = netx_clocksource_read,
.mask = CLOCKSOURCE_MASK(32),
.shift = 10,
};
static int clocksource_init (void)
{
/* disable timer initially */
GPIO_REG(GPIO_COUNTER_CTRL(0)) = 0;
/* Reset the timer value to zero */
GPIO_REG(GPIO_COUNTER_CURRENT(0)) = 0;
GPIO_REG(GPIO_COUNTER_MAX(0)) = 0xffffffff;
GPIO_REG(GPIO_COUNTER_CTRL(0)) = COUNTER_CTRL_RUN;
cs.mult = clocksource_hz2mult(100 * 1000 * 1000, cs.shift);
return init_clock(&cs);
}
core_initcall(clocksource_init);
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