LXR linux/include/linux/dw_apb

   1/*
   2 * (C) Copyright 2009 Intel Corporation
   3 * Author: Jacob Pan (jacob.jun.pan@intel.com)
   4 *
   5 * Shared with ARM platforms, Jamie Iles, Picochip 2011
   6 *
   7 * This program is free software; you can redistribute it and/or modify
   8 * it under the terms of the GNU General Public License version 2 as
   9 * published by the Free Software Foundation.
  10 *
  11 * Support for the Synopsys DesignWare APB Timers.
  12 */
  13#ifndef __DW_APB_TIMER_H__
  14#define __DW_APB_TIMER_H__
  15
  16#include <linux/clockchips.h>
  17#include <linux/clocksource.h>
  18#include <linux/interrupt.h>
  19
  20#define APBTMRS_REG_SIZE       0x14
  21
  22struct dw_apb_timer {
  23        void __iomem                            *base;
  24        unsigned long                           freq;
  25        int                                     irq;
  26};
  27
  28struct dw_apb_clock_event_device {
  29        struct clock_event_device               ced;
  30        struct dw_apb_timer                     timer;
  31        struct irqaction                        irqaction;
  32        void                                    (*eoi)(struct dw_apb_timer *);
  33};
  34
  35struct dw_apb_clocksource {
  36        struct dw_apb_timer                     timer;
  37        struct clocksource                      cs;
  38};
  39
  40void dw_apb_clockevent_register(struct dw_apb_clock_event_device *dw_ced);
  41void dw_apb_clockevent_pause(struct dw_apb_clock_event_device *dw_ced);
  42void dw_apb_clockevent_resume(struct dw_apb_clock_event_device *dw_ced);
  43void dw_apb_clockevent_stop(struct dw_apb_clock_event_device *dw_ced);
  44
  45struct dw_apb_clock_event_device *
  46dw_apb_clockevent_init(int cpu, const char *name, unsigned rating,
  47                       void __iomem *base, int irq, unsigned long freq);
  48struct dw_apb_clocksource *
  49dw_apb_clocksource_init(unsigned rating, const char *name, void __iomem *base,
  50                        unsigned long freq);
  51void dw_apb_clocksource_register(struct dw_apb_clocksource *dw_cs);
  52void dw_apb_clocksource_start(struct dw_apb_clocksource *dw_cs);
  53cycle_t dw_apb_clocksource_read(struct dw_apb_clocksource *dw_cs);
  54void dw_apb_clocksource_unregister(struct dw_apb_clocksource *dw_cs);
  55
  56#endif /* __DW_APB_TIMER_H__ */
  57