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83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
71 lines
1.9 KiB
C
71 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (c) 2015 Google, Inc
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* Written by Simon Glass <sjg@chromium.org>
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*/
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#ifndef __SYSRESET_H
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#define __SYSRESET_H
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enum sysreset_t {
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SYSRESET_WARM, /* Reset CPU, keep GPIOs active */
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SYSRESET_COLD, /* Reset CPU and GPIOs */
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SYSRESET_POWER, /* Reset PMIC (remove and restore power) */
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SYSRESET_COUNT,
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};
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struct sysreset_ops {
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/**
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* request() - request a sysreset of the given type
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*
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* Note that this function may return before the reset takes effect.
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*
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* @type: Reset type to request
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* @return -EINPROGRESS if the reset has been started and
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* will complete soon, -EPROTONOSUPPORT if not supported
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* by this device, 0 if the reset has already happened
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* (in which case this method will not actually return)
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*/
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int (*request)(struct udevice *dev, enum sysreset_t type);
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};
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#define sysreset_get_ops(dev) ((struct sysreset_ops *)(dev)->driver->ops)
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/**
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* sysreset_request() - request a sysreset
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*
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* @type: Reset type to request
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* @return 0 if OK, -EPROTONOSUPPORT if not supported by this device
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*/
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int sysreset_request(struct udevice *dev, enum sysreset_t type);
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/**
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* sysreset_walk() - cause a system reset
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*
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* This works through the available sysreset devices until it finds one that can
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* perform a reset. If the provided sysreset type is not available, the next one
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* will be tried.
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*
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* If this function fails to reset, it will display a message and halt
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*
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* @type: Reset type to request
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* @return -EINPROGRESS if a reset is in progress, -ENOSYS if not available
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*/
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int sysreset_walk(enum sysreset_t type);
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/**
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* sysreset_walk_halt() - try to reset, otherwise halt
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*
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* This calls sysreset_walk(). If it returns, indicating that reset is not
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* supported, it prints a message and halts.
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*/
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void sysreset_walk_halt(enum sysreset_t type);
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/**
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* reset_cpu() - calls sysreset_walk(SYSRESET_WARM)
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*/
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void reset_cpu(ulong addr);
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#endif
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