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https://github.com/AsahiLinux/u-boot
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0fbb96964b
The fdt_addr_t and phys_addr_t size have been decoupled. A 32bit CPU can expect 64-bit data from the device tree parser, so convert regmap_init_mem_plat() input to handel both. The syscon class driver also makes use of the regmap_init_mem_plat() function, but has no way of knowing the format of the device-specific platform data. In case of odd reg structures other then that the syscon class driver assumes the regmap must be filled in the individual syscon driver before pre-probe. Also fix the ARRAY_SIZE divider in the syscon class driver. Signed-off-by: Johan Jonker <jbx6244@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
92 lines
2.7 KiB
C
92 lines
2.7 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 <dm/ofnode.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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/**
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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_regmap_lookup_by_phandle() - Look up a controller by a phandle
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*
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* This operates by looking up the given name in the device (device
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* tree property) of the device using the system controller.
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*
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* @dev: Device using the system controller
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* @name: Name of property referring to the system controller
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* Return: A pointer to the regmap if found, ERR_PTR(-ve) on error
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*/
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struct regmap *syscon_regmap_lookup_by_phandle(struct udevice *dev,
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const char *name);
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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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/**
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* syscon_node_to_regmap - get regmap from syscon
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*
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* @node: Device node of syscon
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*/
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struct regmap *syscon_node_to_regmap(ofnode node);
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#endif
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