mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-15 22:53:45 +09:00
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>
85 lines
2.4 KiB
C
85 lines
2.4 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 __SYSCON_H
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#define __SYSCON_H
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#include <fdtdec.h>
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/**
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* struct syscon_uc_info - Information stored by the syscon UCLASS_UCLASS
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*
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* @regmap: Register map for this controller
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*/
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struct syscon_uc_info {
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struct regmap *regmap;
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};
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/* So far there are no ops so this is a placeholder */
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struct syscon_ops {
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};
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#define syscon_get_ops(dev) ((struct syscon_ops *)(dev)->driver->ops)
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#if CONFIG_IS_ENABLED(OF_PLATDATA)
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/*
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* We don't support 64-bit machines. If they are so resource-contrained that
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* they need to use OF_PLATDATA, something is horribly wrong with the
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* education of our hardware engineers.
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*
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* Update: 64-bit is now supported and we have an education crisis.
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*/
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struct syscon_base_platdata {
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fdt_val_t reg[2];
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};
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#endif
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/**
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* syscon_get_regmap() - Get access to a register map
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*
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* @dev: Device to check (UCLASS_SCON)
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* @info: Returns regmap for the device
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* @return 0 if OK, -ve on error
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*/
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struct regmap *syscon_get_regmap(struct udevice *dev);
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/**
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* syscon_get_regmap_by_driver_data() - Look up a controller by its ID
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*
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* Each system controller can be accessed by its driver data, which is
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* assumed to be unique through the scope of all system controllers that
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* are in use. This function looks up the controller given this driver data.
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*
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* @driver_data: Driver data value to look up
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* @devp: Returns the controller correponding to @driver_data
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* @return 0 on success, -ENODEV if the ID was not found, or other -ve error
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* code
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*/
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int syscon_get_by_driver_data(ulong driver_data, struct udevice **devp);
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/**
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* syscon_get_regmap_by_driver_data() - Look up a controller by its ID
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*
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* Each system controller can be accessed by its driver data, which is
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* assumed to be unique through the scope of all system controllers that
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* are in use. This function looks up the regmap given this driver data.
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*
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* @driver_data: Driver data value to look up
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* @return register map correponding to @driver_data, or -ve error code
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*/
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struct regmap *syscon_get_regmap_by_driver_data(ulong driver_data);
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/**
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* syscon_get_first_range() - get the first memory range from a syscon regmap
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*
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* @driver_data: Driver data value to look up
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* @return first region of register map correponding to @driver_data, or
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* -ve error code
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*/
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void *syscon_get_first_range(ulong driver_data);
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#endif
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