LXR linux/include/clocksource/timer-davinci.h

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 * TI DaVinci clocksource driver
   4 *
   5 * Copyright (C) 2019 Texas Instruments
   6 * Author: Bartosz Golaszewski <bgolaszewski@baylibre.com>
   7 */
   8
   9#ifndef __TIMER_DAVINCI_H__
  10#define __TIMER_DAVINCI_H__
  11
  12#include <linux/clk.h>
  13#include <linux/ioport.h>
  14
  15enum {
  16        DAVINCI_TIMER_CLOCKEVENT_IRQ,
  17        DAVINCI_TIMER_CLOCKSOURCE_IRQ,
  18        DAVINCI_TIMER_NUM_IRQS,
  19};
  20
  21/**
  22 * struct davinci_timer_cfg - davinci clocksource driver configuration struct
  23 * @reg:        register range resource
  24 * @irq:        clockevent and clocksource interrupt resources
  25 * @cmp_off:    if set - it specifies the compare register used for clockevent
  26 *
  27 * Note: if the compare register is specified, the driver will use the bottom
  28 * clock half for both clocksource and clockevent and the compare register
  29 * to generate event irqs. The user must supply the correct compare register
  30 * interrupt number.
  31 *
  32 * This is only used by da830 the DSP of which uses the top half. The timer
  33 * driver still configures the top half to run in free-run mode.
  34 */
  35struct davinci_timer_cfg {
  36        struct resource reg;
  37        struct resource irq[DAVINCI_TIMER_NUM_IRQS];
  38        unsigned int cmp_off;
  39};
  40
  41int __init davinci_timer_register(struct clk *clk,
  42                                  const struct davinci_timer_cfg *data);
  43
  44#endif /* __TIMER_DAVINCI_H__ */
  45