5c5bcb1d70
Add ACPI part for ig4 driver to make it work on Intel BayTrail SoC where ig4 device is available only through ACPI Reviewed by: avg MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D8742
167 lines
4.3 KiB
C
167 lines
4.3 KiB
C
/*-
|
|
* Copyright (c) 2016 Oleksandr Tymoshenko <gonzo@FreeBSD.org>
|
|
* All rights reserved.
|
|
*
|
|
* 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 <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#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 <machine/bus.h>
|
|
#include <machine/resource.h>
|
|
|
|
#include <contrib/dev/acpica/include/acpi.h>
|
|
#include <contrib/dev/acpica/include/accommon.h>
|
|
|
|
#include <dev/acpica/acpivar.h>
|
|
#include <dev/iicbus/iiconf.h>
|
|
|
|
#include <dev/ichiic/ig4_reg.h>
|
|
#include <dev/ichiic/ig4_var.h>
|
|
|
|
static int ig4iic_acpi_probe(device_t dev);
|
|
static int ig4iic_acpi_attach(device_t dev);
|
|
static int ig4iic_acpi_detach(device_t dev);
|
|
|
|
static char *ig4iic_ids[] = {
|
|
"INT33C2",
|
|
"INT33C3",
|
|
"INT3432",
|
|
"INT3433",
|
|
"80860F41",
|
|
"808622C1",
|
|
"AMDI0510",
|
|
"APMC0D0F",
|
|
NULL
|
|
};
|
|
|
|
static int
|
|
ig4iic_acpi_probe(device_t dev)
|
|
{
|
|
|
|
if (acpi_disabled("ig4iic") ||
|
|
ACPI_ID_PROBE(device_get_parent(dev), dev, ig4iic_ids) == NULL)
|
|
return (ENXIO);
|
|
|
|
device_set_desc(dev, "Designware I2C Controller");
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
ig4iic_acpi_attach(device_t dev)
|
|
{
|
|
ig4iic_softc_t *sc;
|
|
int error;
|
|
|
|
sc = device_get_softc(dev);
|
|
|
|
sc->dev = dev;
|
|
sc->regs_rid = 0;
|
|
sc->regs_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
|
|
&sc->regs_rid, RF_ACTIVE);
|
|
if (sc->regs_res == NULL) {
|
|
device_printf(dev, "unable to map registers\n");
|
|
ig4iic_acpi_detach(dev);
|
|
return (ENXIO);
|
|
}
|
|
sc->intr_rid = 0;
|
|
sc->intr_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
|
|
&sc->intr_rid, RF_SHAREABLE | RF_ACTIVE);
|
|
if (sc->intr_res == NULL) {
|
|
device_printf(dev, "unable to map interrupt\n");
|
|
ig4iic_acpi_detach(dev);
|
|
return (ENXIO);
|
|
}
|
|
sc->platform_attached = 1;
|
|
|
|
error = ig4iic_attach(sc);
|
|
if (error)
|
|
ig4iic_acpi_detach(dev);
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
ig4iic_acpi_detach(device_t dev)
|
|
{
|
|
ig4iic_softc_t *sc = device_get_softc(dev);
|
|
int error;
|
|
|
|
if (sc->platform_attached) {
|
|
error = ig4iic_detach(sc);
|
|
if (error)
|
|
return (error);
|
|
sc->platform_attached = 0;
|
|
}
|
|
|
|
if (sc->intr_res) {
|
|
bus_release_resource(dev, SYS_RES_IRQ,
|
|
sc->intr_rid, sc->intr_res);
|
|
sc->intr_res = NULL;
|
|
}
|
|
if (sc->regs_res) {
|
|
bus_release_resource(dev, SYS_RES_MEMORY,
|
|
sc->regs_rid, sc->regs_res);
|
|
sc->regs_res = NULL;
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static device_method_t ig4iic_acpi_methods[] = {
|
|
/* Device interface */
|
|
DEVMETHOD(device_probe, ig4iic_acpi_probe),
|
|
DEVMETHOD(device_attach, ig4iic_acpi_attach),
|
|
DEVMETHOD(device_detach, ig4iic_acpi_detach),
|
|
|
|
/* iicbus interface */
|
|
DEVMETHOD(iicbus_transfer, ig4iic_transfer),
|
|
DEVMETHOD(iicbus_reset, ig4iic_reset),
|
|
DEVMETHOD(iicbus_callback, iicbus_null_callback),
|
|
|
|
DEVMETHOD_END
|
|
};
|
|
|
|
static driver_t ig4iic_acpi_driver = {
|
|
"ig4iic_acpi",
|
|
ig4iic_acpi_methods,
|
|
sizeof(struct ig4iic_softc),
|
|
};
|
|
|
|
static devclass_t ig4iic_acpi_devclass;
|
|
DRIVER_MODULE(ig4iic_acpi, acpi, ig4iic_acpi_driver, ig4iic_acpi_devclass, 0, 0);
|
|
|
|
MODULE_DEPEND(ig4iic_acpi, acpi, 1, 1, 1);
|
|
MODULE_DEPEND(ig4iic_acpi, pci, 1, 1, 1);
|
|
MODULE_DEPEND(ig4iic_acpi, iicbus, IICBUS_MINVER, IICBUS_PREFVER, IICBUS_MAXVER);
|
|
MODULE_VERSION(ig4iic_acpi, 1);
|