1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2021 Val Packett <val@packett.cool> 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 #include "opt_acpi.h" 29 30 #include <sys/cdefs.h> 31 #include <sys/param.h> 32 #include <sys/bus.h> 33 #include <sys/kernel.h> 34 #include <sys/module.h> 35 #include <sys/proc.h> 36 #include <sys/rman.h> 37 38 #include <dev/intel/spi.h> 39 40 #include "spibus_if.h" 41 42 static const struct intelspi_acpi_device { 43 const char *hid; 44 enum intelspi_vers vers; 45 } intelspi_acpi_devices[] = { 46 { "80860F0E", SPI_BAYTRAIL }, 47 { "8086228E", SPI_BRASWELL }, 48 }; 49 50 static char *intelspi_ids[] = { "80860F0E", "8086228E", NULL }; 51 52 static int 53 intelspi_acpi_probe(device_t dev) 54 { 55 struct intelspi_softc *sc = device_get_softc(dev); 56 char *hid; 57 int i; 58 59 if (acpi_disabled("spi")) 60 return (ENXIO); 61 62 if (ACPI_ID_PROBE(device_get_parent(dev), dev, intelspi_ids, &hid) > 0) 63 return (ENXIO); 64 65 for (i = 0; i < nitems(intelspi_acpi_devices); i++) { 66 if (strcmp(intelspi_acpi_devices[i].hid, hid) == 0) { 67 sc->sc_vers = intelspi_acpi_devices[i].vers; 68 sc->sc_handle = acpi_get_handle(dev); 69 device_set_desc(dev, intelspi_infos[sc->sc_vers].desc); 70 return (BUS_PROBE_DEFAULT); 71 } 72 } 73 74 return (ENXIO); 75 } 76 77 static int 78 intelspi_acpi_attach(device_t dev) 79 { 80 struct intelspi_softc *sc = device_get_softc(dev); 81 82 sc->sc_mem_rid = 0; 83 sc->sc_irq_rid = 0; 84 85 return (intelspi_attach(dev)); 86 } 87 88 static device_method_t intelspi_acpi_methods[] = { 89 /* Device interface */ 90 DEVMETHOD(device_probe, intelspi_acpi_probe), 91 DEVMETHOD(device_attach, intelspi_acpi_attach), 92 DEVMETHOD(device_detach, intelspi_detach), 93 DEVMETHOD(device_suspend, intelspi_suspend), 94 DEVMETHOD(device_resume, intelspi_resume), 95 96 /* SPI interface */ 97 DEVMETHOD(spibus_transfer, intelspi_transfer), 98 99 DEVMETHOD_END 100 }; 101 102 static driver_t intelspi_acpi_driver = { 103 "spi", 104 intelspi_acpi_methods, 105 sizeof(struct intelspi_softc), 106 }; 107 108 DRIVER_MODULE(intelspi, acpi, intelspi_acpi_driver, 0, 0); 109 MODULE_DEPEND(intelspi, acpi, 1, 1, 1); 110 MODULE_DEPEND(intelspi, spibus, 1, 1, 1); 111 ACPI_PNP_INFO(intelspi_ids); 112