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93 lines
1.6 KiB
93 lines
1.6 KiB
// 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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