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- /* 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)
- /**
- * 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
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