/*      $NetBSD: i2cmuxvar.h,v 1.4 2025/09/16 13:09:13 thorpej Exp $    */

/*-
 * Copyright (c) 2020 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Jason R. Thorpe.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef _DEV_I2C_I2CMUXVAR_H_
#define _DEV_I2C_I2CMUXVAR_H_

#include <sys/device.h>
#include <dev/i2c/i2cvar.h>

struct iicmux_softc;
struct iicmux_bus;

struct iicmux_config {
        const char *desc;
        void *  (*get_mux_info)(struct iicmux_softc *);
        void *  (*get_bus_info)(struct iicmux_bus *);
        int     (*acquire_bus)(struct iicmux_bus *, int);
        void    (*release_bus)(struct iicmux_bus *, int);
};

struct iicmux_bus {
        struct i2c_controller controller;
        struct iicmux_softc *mux;
        devhandle_t devhandle;
        int busidx;
        void *bus_data;
};

struct iicmux_softc {
        device_t                        sc_dev;
        devhandle_t                     sc_i2c_mux_devhandle;
        const struct iicmux_config *    sc_config;
        i2c_tag_t                       sc_i2c_parent;
        struct iicmux_bus *             sc_busses;
        int                             sc_nbusses;
        void *                          sc_mux_data;
};

void    iicmux_attach(struct iicmux_softc *);

#endif /* _DEV_I2C_I2CMUXVAR_H_ */