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/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2021 Val Packett <val@packett.cool>
*
* 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/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;
const char *desc;
} intelspi_acpi_devices[] = {
{ "80860F0E", SPI_BAYTRAIL, "Intel Bay Trail SPI Controller" },
{ "8086228E", SPI_BRASWELL, "Intel Braswell SPI Controller" },
};
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_acpi_devices[i].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),
/* Bus interface */
DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource),
DEVMETHOD(bus_release_resource, bus_generic_release_resource),
DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
DEVMETHOD(bus_adjust_resource, bus_generic_adjust_resource),
/* SPI interface */
DEVMETHOD(spibus_transfer, intelspi_transfer),
DEVMETHOD_END
};
static driver_t intelspi_acpi_driver = {
"spi",
intelspi_acpi_methods,
sizeof(struct intelspi_softc),
};
DRIVER_MODULE(intelspi, acpi, intelspi_acpi_driver, 0, 0);
MODULE_DEPEND(intelspi, acpi, 1, 1, 1);
MODULE_DEPEND(intelspi, spibus, 1, 1, 1);
ACPI_PNP_INFO(intelspi_ids);
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