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/*
* Copyright (C) ST-Ericsson SA 2011
*
* License Terms: GNU General Public License v2
* Author: Mattias Wallin <mattias.wallin@stericsson.com> for ST-Ericsson
*/
#include <linux/io.h>
#include <linux/errno.h>
#include <linux/clksrc-dbx500-prcmu.h>
#include <linux/clocksource.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <asm/smp_twd.h>
#include "setup.h"
#include "irqs.h"
#include "db8500-regs.h"
#include "id.h"
#ifdef CONFIG_HAVE_ARM_TWD
static DEFINE_TWD_LOCAL_TIMER(u8500_twd_local_timer,
U8500_TWD_BASE, IRQ_LOCALTIMER);
static void __init ux500_twd_init(void)
{
struct twd_local_timer *twd_local_timer;
/* Use this to switch local timer base if changed in new ASICs */
twd_local_timer = &u8500_twd_local_timer;
clocksource_of_init();
}
#else
#define ux500_twd_init() do { } while(0)
#endif
const static struct of_device_id prcmu_timer_of_match[] __initconst = {
{ .compatible = "stericsson,db8500-prcmu-timer-4", },
{ },
};
void __init ux500_timer_init(void)
{
void __iomem *prcmu_timer_base;
void __iomem *tmp_base;
struct device_node *np;
if (cpu_is_u8500_family() || cpu_is_ux540_family())
prcmu_timer_base = __io_address(U8500_PRCMU_TIMER_4_BASE);
else
ux500_unknown_soc();
np = of_find_matching_node(NULL, prcmu_timer_of_match);
if (!np)
goto dt_fail;
tmp_base = of_iomap(np, 0);
if (!tmp_base)
goto dt_fail;
prcmu_timer_base = tmp_base;
dt_fail:
clksrc_dbx500_prcmu_init(prcmu_timer_base);
ux500_twd_init();
}
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