195 lines
5.0 KiB
C
195 lines
5.0 KiB
C
/*-
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* Copyright (c) 2016 Oleksandr Tymoshenko <gonzo@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#include "opt_acpi.h"
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#include <sys/param.h>
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#include <sys/bus.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/proc.h>
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#include <sys/rman.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <contrib/dev/acpica/include/acpi.h>
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#include <contrib/dev/acpica/include/accommon.h>
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#include <dev/acpica/acpivar.h>
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#include <dev/iicbus/iiconf.h>
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#include <dev/ichiic/ig4_reg.h>
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#include <dev/ichiic/ig4_var.h>
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static int ig4iic_acpi_probe(device_t dev);
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static int ig4iic_acpi_attach(device_t dev);
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static int ig4iic_acpi_detach(device_t dev);
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static char *ig4iic_ids[] = {
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"INT33C2",
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"INT33C3",
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"INT3432",
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"INT3433",
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"80860F41",
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"808622C1",
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"AMDI0510",
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"AMDI0010",
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"AMD0010",
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"APMC0D0F",
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NULL
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};
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static int
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ig4iic_acpi_probe(device_t dev)
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{
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int rv;
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if (acpi_disabled("ig4iic"))
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return (ENXIO);
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rv = ACPI_ID_PROBE(device_get_parent(dev), dev, ig4iic_ids, NULL);
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if (rv > 0)
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return (rv);
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device_set_desc(dev, "Designware I2C Controller");
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return (rv);
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}
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static int
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ig4iic_acpi_attach(device_t dev)
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{
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ig4iic_softc_t *sc;
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int error;
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sc = device_get_softc(dev);
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sc->dev = dev;
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/* All the HIDs matched are Atom SOCs. */
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sc->version = IG4_ATOM;
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sc->regs_rid = 0;
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sc->regs_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
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&sc->regs_rid, RF_ACTIVE);
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if (sc->regs_res == NULL) {
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device_printf(dev, "unable to map registers\n");
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ig4iic_acpi_detach(dev);
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return (ENXIO);
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}
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sc->intr_rid = 0;
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sc->intr_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
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&sc->intr_rid, RF_SHAREABLE | RF_ACTIVE);
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if (sc->intr_res == NULL) {
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device_printf(dev, "unable to map interrupt\n");
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ig4iic_acpi_detach(dev);
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return (ENXIO);
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}
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sc->platform_attached = true;
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error = ig4iic_attach(sc);
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if (error)
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ig4iic_acpi_detach(dev);
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return (error);
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}
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static int
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ig4iic_acpi_detach(device_t dev)
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{
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ig4iic_softc_t *sc = device_get_softc(dev);
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int error;
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if (sc->platform_attached) {
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error = ig4iic_detach(sc);
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if (error)
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return (error);
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sc->platform_attached = false;
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}
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if (sc->intr_res) {
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bus_release_resource(dev, SYS_RES_IRQ,
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sc->intr_rid, sc->intr_res);
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sc->intr_res = NULL;
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}
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if (sc->regs_res) {
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bus_release_resource(dev, SYS_RES_MEMORY,
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sc->regs_rid, sc->regs_res);
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sc->regs_res = NULL;
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}
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return (0);
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}
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static int
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ig4iic_acpi_suspend(device_t dev)
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{
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ig4iic_softc_t *sc = device_get_softc(dev);
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return (ig4iic_suspend(sc));
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}
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static int
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ig4iic_acpi_resume(device_t dev)
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{
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ig4iic_softc_t *sc = device_get_softc(dev);
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return (ig4iic_resume(sc));
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}
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static device_method_t ig4iic_acpi_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, ig4iic_acpi_probe),
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DEVMETHOD(device_attach, ig4iic_acpi_attach),
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DEVMETHOD(device_detach, ig4iic_acpi_detach),
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DEVMETHOD(device_suspend, ig4iic_acpi_suspend),
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DEVMETHOD(device_resume, ig4iic_acpi_resume),
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/* Bus interface */
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DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
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DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
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DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource),
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DEVMETHOD(bus_release_resource, bus_generic_release_resource),
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DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
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DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
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DEVMETHOD(bus_adjust_resource, bus_generic_adjust_resource),
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/* iicbus interface */
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DEVMETHOD(iicbus_transfer, ig4iic_transfer),
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DEVMETHOD(iicbus_reset, ig4iic_reset),
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DEVMETHOD(iicbus_callback, ig4iic_callback),
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DEVMETHOD_END
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};
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static driver_t ig4iic_acpi_driver = {
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"ig4iic",
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ig4iic_acpi_methods,
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sizeof(struct ig4iic_softc),
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};
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DRIVER_MODULE_ORDERED(ig4iic, acpi, ig4iic_acpi_driver, 0, 0, SI_ORDER_ANY);
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MODULE_DEPEND(ig4iic, acpi, 1, 1, 1);
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ACPI_PNP_INFO(ig4iic_ids);
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