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sys/dev/intel/spi_acpi.c
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| /*- | |||||
| * SPDX-License-Identifier: BSD-2-Clause | |||||
| * | |||||
| * Copyright (c) 2021 Greg V <greg@unrelenting.technology> | |||||
| * | |||||
| * 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 AUTHOR 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 AUTHOR 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. | |||||
| */ | |||||
| #include "opt_acpi.h" | |||||
| #include <sys/cdefs.h> | |||||
| #include <sys/param.h> | |||||
| #include <sys/bus.h> | |||||
| #include <sys/kernel.h> | |||||
| #include <sys/module.h> | |||||
| #include <sys/proc.h> | |||||
| #include <sys/rman.h> | |||||
| #include <dev/intel/spi.h> | |||||
| #include "spibus_if.h" | |||||
| static const struct intelspi_acpi_device { | |||||
| const char *hid; | |||||
| enum intelspi_vers vers; | |||||
| } intelspi_acpi_devices[] = { | |||||
| { "80860F0E", SPI_BAYTRAIL }, | |||||
| { "8086228E", SPI_BRASWELL }, | |||||
| }; | |||||
| static char *intelspi_ids[] = { "80860F0E", "8086228E", NULL }; | |||||
| static int | |||||
| intelspi_acpi_probe(device_t dev) | |||||
| { | |||||
| struct intelspi_softc *sc = device_get_softc(dev); | |||||
| char *hid; | |||||
| int i; | |||||
| if (acpi_disabled("spi")) | |||||
| return (ENXIO); | |||||
| if (ACPI_ID_PROBE(device_get_parent(dev), dev, intelspi_ids, &hid) > 0) | |||||
| return (ENXIO); | |||||
| for (i = 0; i < nitems(intelspi_acpi_devices); i++) { | |||||
| if (strcmp(intelspi_acpi_devices[i].hid, hid) == 0) { | |||||
| sc->sc_vers = intelspi_acpi_devices[i].vers; | |||||
| sc->sc_handle = acpi_get_handle(dev); | |||||
| device_set_desc(dev, intelspi_infos[sc->sc_vers].desc); | |||||
| return (BUS_PROBE_DEFAULT); | |||||
| } | |||||
| } | |||||
| return (ENXIO); | |||||
| } | |||||
| static int | |||||
| intelspi_acpi_attach(device_t dev) | |||||
| { | |||||
| struct intelspi_softc *sc = device_get_softc(dev); | |||||
| sc->sc_mem_rid = 0; | |||||
| sc->sc_irq_rid = 0; | |||||
| return (intelspi_attach(dev)); | |||||
| } | |||||
| static device_method_t intelspi_acpi_methods[] = { | |||||
| /* Device interface */ | |||||
| DEVMETHOD(device_probe, intelspi_acpi_probe), | |||||
| DEVMETHOD(device_attach, intelspi_acpi_attach), | |||||
| DEVMETHOD(device_detach, intelspi_detach), | |||||
| DEVMETHOD(device_suspend, intelspi_suspend), | |||||
| DEVMETHOD(device_resume, intelspi_resume), | |||||
| /* SPI interface */ | |||||
| DEVMETHOD(spibus_transfer, intelspi_transfer), | |||||
| DEVMETHOD_END | |||||
| }; | |||||
| static driver_t intelspi_acpi_driver = { | |||||
| "spi", | |||||
| intelspi_acpi_methods, | |||||
| sizeof(struct intelspi_softc), | |||||
| }; | |||||
| static devclass_t intelspi_acpi_devclass; | |||||
| DRIVER_MODULE(intelspi, acpi, intelspi_acpi_driver, intelspi_acpi_devclass, 0, | |||||
| 0); | |||||
| MODULE_DEPEND(intelspi, acpi, 1, 1, 1); | |||||
| MODULE_DEPEND(intelspi, spibus, 1, 1, 1); | |||||