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https://github.com/AsahiLinux/u-boot
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fed0f891c6
Currently when creating an U_BOOT_DEVICE entry a struct driver_info is declared, which contains the data needed to instantiate the device. However, the actual device is created at runtime and there is no proper way to get the device based on its struct driver_info. This patch extends struct driver_info adding a pointer to udevice which is populated during the bind process, allowing to generate a set of functions to get the device based on its struct driver_info. Signed-off-by: Walter Lozano <walter.lozano@collabora.com> Reviewed-by: Simon Glass <sjg@chromium.org>
60 lines
1.7 KiB
C
60 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (c) 2013 Google, Inc
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*
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* (C) Copyright 2012
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* Pavel Herrmann <morpheus.ibis@gmail.com>
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* Marek Vasut <marex@denx.de>
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*/
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#ifndef _DM_PLATDATA_H
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#define _DM_PLATDATA_H
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#include <linker_lists.h>
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/**
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* struct driver_info - Information required to instantiate a device
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*
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* NOTE: Avoid using this except in extreme circumstances, where device tree
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* is not feasible (e.g. serial driver in SPL where <8KB of SRAM is
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* available). U-Boot's driver model uses device tree for configuration.
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*
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* @name: Driver name
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* @platdata: Driver-specific platform data
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* @platdata_size: Size of platform data structure
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* @dev: Device created from this structure data
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*/
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struct driver_info {
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const char *name;
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const void *platdata;
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#if CONFIG_IS_ENABLED(OF_PLATDATA)
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uint platdata_size;
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struct udevice *dev;
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#endif
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};
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/**
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* NOTE: Avoid using these except in extreme circumstances, where device tree
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* is not feasible (e.g. serial driver in SPL where <8KB of SRAM is
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* available). U-Boot's driver model uses device tree for configuration.
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*/
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#define U_BOOT_DEVICE(__name) \
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ll_entry_declare(struct driver_info, __name, driver_info)
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/* Declare a list of devices. The argument is a driver_info[] array */
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#define U_BOOT_DEVICES(__name) \
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ll_entry_declare_list(struct driver_info, __name, driver_info)
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/* Get a pointer to a given driver */
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#define DM_GET_DEVICE(__name) \
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ll_entry_get(struct driver_info, __name, driver_info)
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/**
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* dm_populate_phandle_data() - Populates phandle data in platda
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*
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* This populates phandle data with an U_BOOT_DEVICE entry get by
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* DM_GET_DEVICE. The implementation of this function will be done
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* by dtoc when parsing dtb.
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*/
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void dm_populate_phandle_data(void);
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#endif
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