LXR uboot/drivers/watchdog/sandbox

   1/*
   2 * Copyright 2017 Google, Inc
   3 *
   4 * SPDX-License-Identifier:     GPL-2.0+
   5 */
   6
   7#include <common.h>
   8#include <dm.h>
   9#include <wdt.h>
  10#include <asm/state.h>
  11
  12DECLARE_GLOBAL_DATA_PTR;
  13
  14static int sandbox_wdt_start(struct udevice *dev, u64 timeout, ulong flags)
  15{
  16        struct sandbox_state *state = state_get_current();
  17
  18        state->wdt.counter = timeout;
  19        state->wdt.running = true;
  20
  21        return 0;
  22}
  23
  24static int sandbox_wdt_stop(struct udevice *dev)
  25{
  26        struct sandbox_state *state = state_get_current();
  27
  28        state->wdt.running = false;
  29
  30        return 0;
  31}
  32
  33static int sandbox_wdt_reset(struct udevice *dev)
  34{
  35        struct sandbox_state *state = state_get_current();
  36
  37        state->wdt.reset_count++;
  38
  39        return 0;
  40}
  41
  42static int sandbox_wdt_expire_now(struct udevice *dev, ulong flags)
  43{
  44        sandbox_wdt_start(dev, 1, flags);
  45
  46        return 0;
  47}
  48
  49static const struct wdt_ops sandbox_wdt_ops = {
  50        .start = sandbox_wdt_start,
  51        .reset = sandbox_wdt_reset,
  52        .stop = sandbox_wdt_stop,
  53        .expire_now = sandbox_wdt_expire_now,
  54};
  55
  56static const struct udevice_id sandbox_wdt_ids[] = {
  57        { .compatible = "sandbox,wdt" },
  58        {}
  59};
  60
  61U_BOOT_DRIVER(wdt_sandbox) = {
  62        .name = "wdt_sandbox",
  63        .id = UCLASS_WDT,
  64        .of_match = sandbox_wdt_ids,
  65        .ops = &sandbox_wdt_ops,
  66};
  67