15fe2adacb
As the pl061 driver can be an interrupt controller attach it earlier in the boot so other drivers can use it. Use a new GPIO xref to not conflict with the existing root interrupt controller. Sponsored by: Innovate UK
105 lines
2.9 KiB
C
105 lines
2.9 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
|
|
*
|
|
* Copyright (c) 2020 Amazon.com, Inc. or its affiliates.
|
|
* 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 "opt_acpi.h"
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/module.h>
|
|
#include <sys/lock.h>
|
|
#include <sys/mutex.h>
|
|
|
|
#include <machine/intr.h>
|
|
|
|
#include <contrib/dev/acpica/include/acpi.h>
|
|
#include <contrib/dev/acpica/include/accommon.h>
|
|
|
|
#include <dev/acpica/acpivar.h>
|
|
#include <dev/gpio/gpiobusvar.h>
|
|
|
|
#include "pl061.h"
|
|
|
|
static char *gpio_ids[] = { "ARMH0061", NULL };
|
|
|
|
static int
|
|
pl061_acpi_probe(device_t dev)
|
|
{
|
|
int rv;
|
|
|
|
if (acpi_disabled("gpio"))
|
|
return (ENXIO);
|
|
|
|
rv = ACPI_ID_PROBE(device_get_parent(dev), dev, gpio_ids, NULL);
|
|
|
|
if (rv <= 0)
|
|
device_set_desc(dev, "Arm PL061 GPIO Controller");
|
|
|
|
return (rv);
|
|
}
|
|
|
|
static int
|
|
pl061_acpi_attach(device_t dev)
|
|
{
|
|
int error;
|
|
|
|
error = pl061_attach(dev);
|
|
if (error != 0)
|
|
return (error);
|
|
|
|
if (!intr_pic_register(dev, ACPI_GPIO_XREF)) {
|
|
device_printf(dev, "couldn't register PIC\n");
|
|
pl061_detach(dev);
|
|
error = ENXIO;
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
static device_method_t pl061_acpi_methods[] = {
|
|
/* Device interface */
|
|
DEVMETHOD(device_probe, pl061_acpi_probe),
|
|
DEVMETHOD(device_attach, pl061_acpi_attach),
|
|
|
|
DEVMETHOD_END
|
|
};
|
|
|
|
DEFINE_CLASS_1(gpio, pl061_acpi_driver, pl061_acpi_methods,
|
|
sizeof(struct pl061_softc), pl061_driver);
|
|
|
|
static devclass_t pl061_devclass;
|
|
|
|
EARLY_DRIVER_MODULE(pl061, acpi, pl061_acpi_driver, pl061_devclass, NULL, NULL,
|
|
BUS_PASS_INTERRUPT + BUS_PASS_ORDER_LATE);
|
|
MODULE_DEPEND(pl061, acpi, 1, 1, 1);
|
|
MODULE_DEPEND(pl061, gpiobus, 1, 1, 1);
|