79 lines
2.5 KiB
C
79 lines
2.5 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2017 Kyle Evans <kevans@FreeBSD.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef DEV_SYSCON_H
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#define DEV_SYSCON_H
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#include "opt_platform.h"
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#include <sys/types.h>
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#include <sys/kobj.h>
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#ifdef FDT
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#include <dev/ofw/ofw_bus.h>
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#endif
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struct syscon {
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KOBJ_FIELDS;
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TAILQ_ENTRY(syscon) syscon_link; /* Global list entry */
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device_t pdev; /* provider device */
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#ifdef FDT
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phandle_t ofw_node; /* OFW node for syscon */
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#endif
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void *softc; /* provider softc */
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};
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/*
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* Shorthands for constructing method tables.
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*/
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#define SYSCONMETHOD KOBJMETHOD
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#define SYSCONMETHOD_END KOBJMETHOD_END
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#define syscon_method_t kobj_method_t
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#define syscon_class_t kobj_class_t
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DECLARE_CLASS(syscon_class);
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void *syscon_get_softc(struct syscon *syscon);
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/*
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* Provider interface
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*/
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struct syscon *syscon_create(device_t pdev, syscon_class_t syscon_class);
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struct syscon *syscon_register(struct syscon *syscon);
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int syscon_unregister(struct syscon *syscon);
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#ifdef FDT
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struct syscon *syscon_create_ofw_node(device_t pdev,
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syscon_class_t syscon_class, phandle_t node);
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phandle_t syscon_get_ofw_node(struct syscon *syscon);
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int syscon_get_by_ofw_property(device_t consumer, phandle_t node, char *name,
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struct syscon **syscon);
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#endif
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#endif /* DEV_SYSCON_H */
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