mirror of
https://github.com/brain-hackers/u-boot-brain
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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>
82 lines
2.4 KiB
C
82 lines
2.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (c) 2016, NVIDIA CORPORATION.
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*/
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#ifndef _POWER_DOMAIN_UCLASS_H
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#define _POWER_DOMAIN_UCLASS_H
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/* See power-domain.h for background documentation. */
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#include <power-domain.h>
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struct udevice;
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/**
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* struct power_domain_ops - The functions that a power domain controller driver
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* must implement.
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*/
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struct power_domain_ops {
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/**
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* of_xlate - Translate a client's device-tree (OF) power domain
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* specifier.
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*
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* The power domain core calls this function as the first step in
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* implementing a client's power_domain_get() call.
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*
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* If this function pointer is set to NULL, the power domain core will
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* use a default implementation, which assumes #power-domain-cells =
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* <1>, and that the DT cell contains a simple integer power domain ID.
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*
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* At present, the power domain API solely supports device-tree. If
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* this changes, other xxx_xlate() functions may be added to support
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* those other mechanisms.
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*
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* @power_domain: The power domain struct to hold the
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* translation result.
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* @args: The power domain specifier values from device
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* tree.
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* @return 0 if OK, or a negative error code.
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*/
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int (*of_xlate)(struct power_domain *power_domain,
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struct ofnode_phandle_args *args);
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/**
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* request - Request a translated power domain.
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*
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* The power domain core calls this function as the second step in
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* implementing a client's power_domain_get() call, following a
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* successful xxx_xlate() call.
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*
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* @power_domain: The power domain to request; this has been
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* filled in by a previous xxx_xlate() function
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* call.
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* @return 0 if OK, or a negative error code.
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*/
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int (*request)(struct power_domain *power_domain);
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/**
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* free - Free a previously requested power domain.
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*
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* This is the implementation of the client power_domain_free() API.
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*
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* @power_domain: The power domain to free.
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* @return 0 if OK, or a negative error code.
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*/
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int (*free)(struct power_domain *power_domain);
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/**
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* on - Power on a power domain.
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*
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* @power_domain: The power domain to turn on.
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* @return 0 if OK, or a negative error code.
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*/
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int (*on)(struct power_domain *power_domain);
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/**
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* off - Power off a power domain.
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*
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* @power_domain: The power domain to turn off.
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* @return 0 if OK, or a negative error code.
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*/
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int (*off)(struct power_domain *power_domain);
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};
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#endif
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