mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-21 10:43:06 +00:00
185f812c41
Sphinx expects Return: and not @return to indicate a return value.
find . -name '*.c' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;
find . -name '*.h' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
105 lines
3.1 KiB
C
105 lines
3.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
|
|
/*
|
|
* Copyright (c) 2015 Google, Inc
|
|
* Written by Simon Glass <sjg@chromium.org>
|
|
*/
|
|
|
|
#ifndef __SYSCON_H
|
|
#define __SYSCON_H
|
|
|
|
#include <dm/ofnode.h>
|
|
#include <fdtdec.h>
|
|
|
|
/**
|
|
* struct syscon_uc_info - Information stored by the syscon UCLASS_UCLASS
|
|
*
|
|
* @regmap: Register map for this controller
|
|
*/
|
|
struct syscon_uc_info {
|
|
struct regmap *regmap;
|
|
};
|
|
|
|
/* So far there are no ops so this is a placeholder */
|
|
struct syscon_ops {
|
|
};
|
|
|
|
#define syscon_get_ops(dev) ((struct syscon_ops *)(dev)->driver->ops)
|
|
|
|
#if CONFIG_IS_ENABLED(OF_PLATDATA)
|
|
/*
|
|
* We don't support 64-bit machines. If they are so resource-contrained that
|
|
* they need to use OF_PLATDATA, something is horribly wrong with the
|
|
* education of our hardware engineers.
|
|
*
|
|
* Update: 64-bit is now supported and we have an education crisis.
|
|
*/
|
|
struct syscon_base_plat {
|
|
fdt_val_t reg[2];
|
|
};
|
|
#endif
|
|
|
|
/**
|
|
* syscon_get_regmap() - Get access to a register map
|
|
*
|
|
* @dev: Device to check (UCLASS_SCON)
|
|
* @info: Returns regmap for the device
|
|
* Return: 0 if OK, -ve on error
|
|
*/
|
|
struct regmap *syscon_get_regmap(struct udevice *dev);
|
|
|
|
/**
|
|
* syscon_get_regmap_by_driver_data() - Look up a controller by its ID
|
|
*
|
|
* Each system controller can be accessed by its driver data, which is
|
|
* assumed to be unique through the scope of all system controllers that
|
|
* are in use. This function looks up the controller given this driver data.
|
|
*
|
|
* @driver_data: Driver data value to look up
|
|
* @devp: Returns the controller correponding to @driver_data
|
|
* Return: 0 on success, -ENODEV if the ID was not found, or other -ve error
|
|
* code
|
|
*/
|
|
int syscon_get_by_driver_data(ulong driver_data, struct udevice **devp);
|
|
|
|
/**
|
|
* syscon_get_regmap_by_driver_data() - Look up a controller by its ID
|
|
*
|
|
* Each system controller can be accessed by its driver data, which is
|
|
* assumed to be unique through the scope of all system controllers that
|
|
* are in use. This function looks up the regmap given this driver data.
|
|
*
|
|
* @driver_data: Driver data value to look up
|
|
* Return: register map correponding to @driver_data, or -ve error code
|
|
*/
|
|
struct regmap *syscon_get_regmap_by_driver_data(ulong driver_data);
|
|
|
|
/**
|
|
* syscon_regmap_lookup_by_phandle() - Look up a controller by a phandle
|
|
*
|
|
* This operates by looking up the given name in the device (device
|
|
* tree property) of the device using the system controller.
|
|
*
|
|
* @dev: Device using the system controller
|
|
* @name: Name of property referring to the system controller
|
|
* Return: A pointer to the regmap if found, ERR_PTR(-ve) on error
|
|
*/
|
|
struct regmap *syscon_regmap_lookup_by_phandle(struct udevice *dev,
|
|
const char *name);
|
|
|
|
/**
|
|
* syscon_get_first_range() - get the first memory range from a syscon regmap
|
|
*
|
|
* @driver_data: Driver data value to look up
|
|
* Return: first region of register map correponding to @driver_data, or
|
|
* -ve error code
|
|
*/
|
|
void *syscon_get_first_range(ulong driver_data);
|
|
|
|
/**
|
|
* syscon_node_to_regmap - get regmap from syscon
|
|
*
|
|
* @node: Device node of syscon
|
|
*/
|
|
struct regmap *syscon_node_to_regmap(ofnode node);
|
|
|
|
#endif
|