94 lines
1.6 KiB
C
94 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2017 Google, Inc
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*/
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#include <common.h>
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#include <dm.h>
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#include <errno.h>
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#include <wdt.h>
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#include <dm/device-internal.h>
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#include <dm/lists.h>
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int wdt_start(struct udevice *dev, u64 timeout_ms, ulong flags)
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{
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const struct wdt_ops *ops = device_get_ops(dev);
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if (!ops->start)
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return -ENOSYS;
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return ops->start(dev, timeout_ms, flags);
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}
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int wdt_stop(struct udevice *dev)
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{
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const struct wdt_ops *ops = device_get_ops(dev);
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if (!ops->stop)
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return -ENOSYS;
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return ops->stop(dev);
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}
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int wdt_reset(struct udevice *dev)
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{
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const struct wdt_ops *ops = device_get_ops(dev);
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if (!ops->reset)
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return -ENOSYS;
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return ops->reset(dev);
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}
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int wdt_expire_now(struct udevice *dev, ulong flags)
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{
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int ret = 0;
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const struct wdt_ops *ops;
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debug("WDT Resetting: %lu\n", flags);
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ops = device_get_ops(dev);
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if (ops->expire_now) {
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return ops->expire_now(dev, flags);
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} else {
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if (!ops->start)
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return -ENOSYS;
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ret = ops->start(dev, 1, flags);
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if (ret < 0)
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return ret;
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hang();
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}
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return ret;
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}
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static int wdt_post_bind(struct udevice *dev)
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{
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#if defined(CONFIG_NEEDS_MANUAL_RELOC)
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struct wdt_ops *ops = (struct wdt_ops *)device_get_ops(dev);
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static int reloc_done;
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if (!reloc_done) {
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if (ops->start)
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ops->start += gd->reloc_off;
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if (ops->stop)
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ops->stop += gd->reloc_off;
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if (ops->reset)
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ops->reset += gd->reloc_off;
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if (ops->expire_now)
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ops->expire_now += gd->reloc_off;
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reloc_done++;
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}
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#endif
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return 0;
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}
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UCLASS_DRIVER(wdt) = {
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.id = UCLASS_WDT,
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.name = "watchdog",
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.flags = DM_UC_FLAG_SEQ_ALIAS,
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.post_bind = wdt_post_bind,
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};
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