1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2024 Pierre-Luc Drouin <pldrouin@pldrouin.net> 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 /* 29 * Vybrid Family Inter-Integrated Circuit (I2C) 30 * Originally based on Chapter 48, Vybrid Reference Manual, Rev. 5, 07/2013 31 * Currently based on Chapter 21, LX2160A Reference Manual, Rev. 1, 10/2021 32 * 33 * The current implementation is based on the original driver by Ruslan Bukin, 34 * later modified by Dawid Górecki, and split into FDT and ACPI drivers by Val 35 * Packett. 36 */ 37 38 #include "opt_acpi.h" 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/bus.h> 43 #include <sys/kernel.h> 44 #include <sys/module.h> 45 #include <sys/rman.h> 46 47 #include <contrib/dev/acpica/include/acpi.h> 48 #include <contrib/dev/acpica/include/accommon.h> 49 50 #include <dev/acpica/acpivar.h> 51 #include <dev/iicbus/iicbus.h> 52 #include <dev/iicbus/iiconf.h> 53 54 #include <dev/iicbus/controller/vybrid/vf_i2c.h> 55 56 static char *vf_i2c_ids[] = { 57 "NXP0001", 58 NULL 59 }; 60 61 static int 62 vf_i2c_acpi_probe(device_t dev) 63 { 64 int rv; 65 66 if (acpi_disabled("vf_i2c")) 67 return (ENXIO); 68 69 rv = ACPI_ID_PROBE(device_get_parent(dev), dev, vf_i2c_ids, NULL); 70 if (rv > 0) 71 return (rv); 72 73 device_set_desc(dev, VF_I2C_DEVSTR); 74 return (BUS_PROBE_DEFAULT); 75 } 76 77 static int 78 vf_i2c_acpi_attach(device_t dev) 79 { 80 struct vf_i2c_softc *sc; 81 82 sc = device_get_softc(dev); 83 sc->dev = dev; 84 sc->hwtype = HW_VF610; 85 sc->freq = 0; 86 87 return (vf_i2c_attach_common(dev)); 88 } 89 90 static device_method_t vf_i2c_acpi_methods[] = { 91 /* Device interface */ 92 DEVMETHOD(device_probe, vf_i2c_acpi_probe), 93 DEVMETHOD(device_attach, vf_i2c_acpi_attach), 94 DEVMETHOD_END 95 }; 96 97 DEFINE_CLASS_1(vf_i2c_acpi, vf_i2c_acpi_driver, vf_i2c_acpi_methods, 98 sizeof(struct vf_i2c_softc), vf_i2c_driver); 99 100 DRIVER_MODULE(vf_i2c_acpi, acpi, vf_i2c_acpi_driver, 0, 0); 101 DRIVER_MODULE(iicbus, vf_i2c_acpi, iicbus_driver, 0, 0); 102 DRIVER_MODULE(acpi_iicbus, vf_i2c_acpi, acpi_iicbus_driver, 0, 0); 103