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In some drivers we need to assert and deassert a group of hardware resets in any order. To support this add a new hwreset_array that manages all hwresets defined for a device. Reviewed by: bz, manu, mmel Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D37357
75 lines
2.5 KiB
C
75 lines
2.5 KiB
C
/*-
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* Copyright 2016 Michal Meloun <mmel@FreeBSD.org>
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* All rights reserved.
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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_EXTRES_HWRESET_HWRESET_H
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#define DEV_EXTRES_HWRESET_HWRESET_H
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#include "opt_platform.h"
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#include <sys/types.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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typedef struct hwreset *hwreset_t;
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typedef struct hwreset_array *hwreset_array_t;
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/*
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* Provider interface
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*/
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#ifdef FDT
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void hwreset_register_ofw_provider(device_t provider_dev);
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void hwreset_unregister_ofw_provider(device_t provider_dev);
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#endif
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/*
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* Consumer interface
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*/
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int hwreset_get_by_id(device_t consumer_dev, device_t provider_dev, intptr_t id,
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hwreset_t *rst);
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void hwreset_release(hwreset_t rst);
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int hwreset_assert(hwreset_t rst);
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int hwreset_deassert(hwreset_t rst);
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int hwreset_is_asserted(hwreset_t rst, bool *value);
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#ifdef FDT
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int hwreset_get_by_ofw_name(device_t consumer_dev, phandle_t node, char *name,
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hwreset_t *rst);
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int hwreset_get_by_ofw_idx(device_t consumer_dev, phandle_t node, int idx,
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hwreset_t *rst);
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#endif
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void hwreset_array_release(hwreset_array_t rsts);
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int hwreset_array_assert(hwreset_array_t rsts);
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int hwreset_array_deassert(hwreset_array_t rsts);
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#ifdef FDT
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int hwreset_array_get_ofw(device_t consumer_dev, phandle_t cnode,
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hwreset_array_t *rsts);
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#endif
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#endif /* DEV_EXTRES_HWRESET_HWRESET_H */
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