1 /* $NetBSD: i2cmuxvar.h,v 1.3 2021/01/25 12:18:18 jmcneill Exp $ */ 2 3 /*- 4 * Copyright (c) 2020 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifndef _DEV_I2C_I2CMUXVAR_H_ 33 #define _DEV_I2C_I2CMUXVAR_H_ 34 35 #include <dev/i2c/i2cvar.h> 36 37 struct iicmux_softc; 38 struct iicmux_bus; 39 40 struct iicmux_config { 41 const char *desc; 42 void * (*get_mux_info)(struct iicmux_softc *); 43 void * (*get_bus_info)(struct iicmux_bus *); 44 int (*acquire_bus)(struct iicmux_bus *, int); 45 void (*release_bus)(struct iicmux_bus *, int); 46 }; 47 48 struct iicmux_bus { 49 struct i2c_controller controller; 50 struct iicmux_softc *mux; 51 uintptr_t handle; 52 enum i2c_cookie_type handletype; 53 int busidx; 54 void *bus_data; 55 }; 56 57 struct iicmux_softc { 58 device_t sc_dev; 59 enum i2c_cookie_type sc_handletype; 60 uintptr_t sc_handle; 61 int sc_i2c_mux_phandle; 62 const struct iicmux_config * sc_config; 63 i2c_tag_t sc_i2c_parent; 64 struct iicmux_bus * sc_busses; 65 int sc_nbusses; 66 void * sc_mux_data; 67 }; 68 69 void iicmux_attach(struct iicmux_softc *); 70 71 #endif /* _DEV_I2C_I2CMUXVAR_H_ */ 72