dw_apb_timer.h

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/*
 * (C) Copyright 2009 Intel Corporation
 * Author: Jacob Pan ([email protected])
 *
 * Shared with ARM platforms, Jamie Iles, Picochip 2011
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * Support for the Synopsys DesignWare APB Timers.
 */
#ifndef __DW_APB_TIMER_H__
#define __DW_APB_TIMER_H__

#include <linux/clockchips.h>
#include <linux/clocksource.h>
#include <linux/interrupt.h>

#define APBTMRS_REG_SIZE       0x14

struct dw_apb_timer {
    void __iomem                *base;
    unsigned long               freq;
    int                 irq;
};

struct dw_apb_clock_event_device {
    struct clock_event_device       ced;
    struct dw_apb_timer         timer;
    struct irqaction            irqaction;
    void                    (*eoi)(struct dw_apb_timer *);
};

struct dw_apb_clocksource {
    struct dw_apb_timer         timer;
    struct clocksource          cs;
};

void dw_apb_clockevent_register(struct dw_apb_clock_event_device *dw_ced);
void dw_apb_clockevent_pause(struct dw_apb_clock_event_device *dw_ced);
void dw_apb_clockevent_resume(struct dw_apb_clock_event_device *dw_ced);
void dw_apb_clockevent_stop(struct dw_apb_clock_event_device *dw_ced);

struct dw_apb_clock_event_device *
dw_apb_clockevent_init(int cpu, const char *name, unsigned rating,
               void __iomem *base, int irq, unsigned long freq);
struct dw_apb_clocksource *
dw_apb_clocksource_init(unsigned rating, const char *name, void __iomem *base,
            unsigned long freq);
void dw_apb_clocksource_register(struct dw_apb_clocksource *dw_cs);
void dw_apb_clocksource_start(struct dw_apb_clocksource *dw_cs);
cycle_t dw_apb_clocksource_read(struct dw_apb_clocksource *dw_cs);
void dw_apb_clocksource_unregister(struct dw_apb_clocksource *dw_cs);

extern struct sys_timer dw_apb_timer;
#endif /* __DW_APB_TIMER_H__ */