freebsd-skq/sys/dev/ichiic/ig4_acpi.c
Andriy Gapon 9744b779a8 fix formatting and style in ig4iic_acpi_probe afetr r339754
This includes removing stray whitespace, adding a line after the
variable declaration block and removing a redundant check.

MFC after:	1 week
X-MFC with:	r339754
2018-12-17 21:33:25 +00:00

178 lines
4.6 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",
"AMDI0010",
"APMC0D0F",
NULL
};
static int
ig4iic_acpi_probe(device_t dev)
{
ig4iic_softc_t *sc;
char *hid;
int rv;
sc = device_get_softc(dev);
if (acpi_disabled("ig4iic"))
return (ENXIO);
rv = ACPI_ID_PROBE(device_get_parent(dev), dev, ig4iic_ids, &hid);
if (rv > 0)
return (rv);
if (strcmp("AMDI0010", hid) == 0)
sc->access_intr_mask = 1;
device_set_desc(dev, "Designware I2C Controller");
return (rv);
}
static int
ig4iic_acpi_attach(device_t dev)
{
ig4iic_softc_t *sc;
int error;
sc = device_get_softc(dev);
sc->dev = dev;
/* All the HIDs matched are Atom SOCs. */
sc->version = IG4_ATOM;
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);