72 lines
2.4 KiB
C
72 lines
2.4 KiB
C
/* $NetBSD: i2cmuxvar.h,v 1.3 2021/01/25 12:18:18 jmcneill Exp $ */
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/*-
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* Copyright (c) 2020 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe.
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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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _DEV_I2C_I2CMUXVAR_H_
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#define _DEV_I2C_I2CMUXVAR_H_
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#include <dev/i2c/i2cvar.h>
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struct iicmux_softc;
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struct iicmux_bus;
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struct iicmux_config {
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const char *desc;
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void * (*get_mux_info)(struct iicmux_softc *);
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void * (*get_bus_info)(struct iicmux_bus *);
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int (*acquire_bus)(struct iicmux_bus *, int);
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void (*release_bus)(struct iicmux_bus *, int);
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};
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struct iicmux_bus {
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struct i2c_controller controller;
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struct iicmux_softc *mux;
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uintptr_t handle;
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enum i2c_cookie_type handletype;
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int busidx;
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void *bus_data;
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};
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struct iicmux_softc {
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device_t sc_dev;
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enum i2c_cookie_type sc_handletype;
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uintptr_t sc_handle;
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int sc_i2c_mux_phandle;
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const struct iicmux_config * sc_config;
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i2c_tag_t sc_i2c_parent;
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struct iicmux_bus * sc_busses;
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int sc_nbusses;
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void * sc_mux_data;
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};
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void iicmux_attach(struct iicmux_softc *);
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#endif /* _DEV_I2C_I2CMUXVAR_H_ */
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