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59 lines
1.1 KiB
59 lines
1.1 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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* Copyright (C) 2017 Álvaro Fernández Rojas <[email protected]> |
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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 <sysreset.h> |
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#include <wdt.h> |
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struct wdt_reboot_priv { |
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struct udevice *wdt; |
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}; |
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static int wdt_reboot_request(struct udevice *dev, enum sysreset_t type) |
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{ |
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struct wdt_reboot_priv *priv = dev_get_priv(dev); |
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int ret; |
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ret = wdt_expire_now(priv->wdt, 0); |
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if (ret) |
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return ret; |
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return -EINPROGRESS; |
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} |
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static struct sysreset_ops wdt_reboot_ops = { |
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.request = wdt_reboot_request, |
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}; |
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int wdt_reboot_probe(struct udevice *dev) |
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{ |
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struct wdt_reboot_priv *priv = dev_get_priv(dev); |
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int err; |
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err = uclass_get_device_by_phandle(UCLASS_WDT, dev, |
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"wdt", &priv->wdt); |
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if (err) { |
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pr_err("unable to find wdt device\n"); |
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return err; |
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} |
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return 0; |
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} |
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static const struct udevice_id wdt_reboot_ids[] = { |
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{ .compatible = "wdt-reboot" }, |
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{ /* sentinel */ } |
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}; |
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U_BOOT_DRIVER(wdt_reboot) = { |
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.name = "wdt_reboot", |
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.id = UCLASS_SYSRESET, |
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.of_match = wdt_reboot_ids, |
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.ops = &wdt_reboot_ops, |
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.priv_auto_alloc_size = sizeof(struct wdt_reboot_priv), |
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.probe = wdt_reboot_probe, |
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};
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