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 const char *desc; 46 } intelspi_acpi_devices[] = { 47 { "80860F0E", SPI_BAYTRAIL, "Intel Bay Trail SPI Controller" }, 48 { "8086228E", SPI_BRASWELL, "Intel Braswell SPI Controller" }, 49 }; 50 51 static char *intelspi_ids[] = { "80860F0E", "8086228E", NULL }; 52 53 static int 54 intelspi_acpi_probe(device_t dev) 55 { 56 struct intelspi_softc *sc = device_get_softc(dev); 57 char *hid; 58 int i; 59 60 if (acpi_disabled("spi")) 61 return (ENXIO); 62 63 if (ACPI_ID_PROBE(device_get_parent(dev), dev, intelspi_ids, &hid) > 0) 64 return (ENXIO); 65 66 for (i = 0; i < nitems(intelspi_acpi_devices); i++) { 67 if (strcmp(intelspi_acpi_devices[i].hid, hid) == 0) { 68 sc->sc_vers = intelspi_acpi_devices[i].vers; 69 sc->sc_handle = acpi_get_handle(dev); 70 device_set_desc(dev, intelspi_acpi_devices[i].desc); 71 return (BUS_PROBE_DEFAULT); 72 } 73 } 74 75 return (ENXIO); 76 } 77 78 static int 79 intelspi_acpi_attach(device_t dev) 80 { 81 struct intelspi_softc *sc = device_get_softc(dev); 82 83 sc->sc_mem_rid = 0; 84 sc->sc_irq_rid = 0; 85 86 return (intelspi_attach(dev)); 87 } 88 89 static device_method_t intelspi_acpi_methods[] = { 90 /* Device interface */ 91 DEVMETHOD(device_probe, intelspi_acpi_probe), 92 DEVMETHOD(device_attach, intelspi_acpi_attach), 93 DEVMETHOD(device_detach, intelspi_detach), 94 DEVMETHOD(device_suspend, intelspi_suspend), 95 DEVMETHOD(device_resume, intelspi_resume), 96 97 /* Bus interface */ 98 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 99 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 100 DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource), 101 DEVMETHOD(bus_release_resource, bus_generic_release_resource), 102 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 103 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 104 DEVMETHOD(bus_adjust_resource, bus_generic_adjust_resource), 105 106 /* SPI interface */ 107 DEVMETHOD(spibus_transfer, intelspi_transfer), 108 109 DEVMETHOD_END 110 }; 111 112 static driver_t intelspi_acpi_driver = { 113 "spi", 114 intelspi_acpi_methods, 115 sizeof(struct intelspi_softc), 116 }; 117 118 DRIVER_MODULE(intelspi, acpi, intelspi_acpi_driver, 0, 0); 119 MODULE_DEPEND(intelspi, acpi, 1, 1, 1); 120 MODULE_DEPEND(intelspi, spibus, 1, 1, 1); 121 ACPI_PNP_INFO(intelspi_ids); 122