freebsd-dev/sys/dev/uart/uart_bus_acpi.c
Warner Losh f86e60008b Regularize my copyright notice
o Remove All Rights Reserved from my notices
o imp@FreeBSD.org everywhere
o regularize punctiation, eliminate date ranges
o Make sure that it's clear that I don't claim All Rights reserved by listing
  All Rights Reserved on same line as other copyright holders (but not
  me). Other such holders are also listed last where it's clear.
2019-12-04 16:56:11 +00:00

103 lines
3.1 KiB
C

/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2001 M. Warner Losh <imp@FreeBSD.org>
*
* 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 ``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 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 <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <machine/resource.h>
#include <dev/uart/uart.h>
#include <dev/uart/uart_bus.h>
#include <dev/uart/uart_cpu_acpi.h>
#include <contrib/dev/acpica/include/acpi.h>
#include <contrib/dev/acpica/include/accommon.h>
#include <dev/acpica/acpivar.h>
static int uart_acpi_probe(device_t dev);
static device_method_t uart_acpi_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, uart_acpi_probe),
DEVMETHOD(device_attach, uart_bus_attach),
DEVMETHOD(device_detach, uart_bus_detach),
DEVMETHOD(device_resume, uart_bus_resume),
{ 0, 0 }
};
static driver_t uart_acpi_driver = {
uart_driver_name,
uart_acpi_methods,
sizeof(struct uart_softc),
};
static struct acpi_uart_compat_data *
uart_acpi_find_device(device_t dev)
{
struct acpi_uart_compat_data **cd, *cd_it;
ACPI_HANDLE h;
if ((h = acpi_get_handle(dev)) == NULL)
return (NULL);
SET_FOREACH(cd, uart_acpi_class_and_device_set) {
for (cd_it = *cd; cd_it->cd_hid != NULL; cd_it++) {
if (acpi_MatchHid(h, cd_it->cd_hid))
return (cd_it);
}
}
return (NULL);
}
static int
uart_acpi_probe(device_t dev)
{
struct uart_softc *sc;
struct acpi_uart_compat_data *cd;
sc = device_get_softc(dev);
if ((cd = uart_acpi_find_device(dev)) != NULL) {
sc->sc_class = cd->cd_class;
if (cd->cd_desc != NULL)
device_set_desc(dev, cd->cd_desc);
return (uart_bus_probe(dev, cd->cd_regshft, cd->cd_regiowidth,
cd->cd_rclk, 0, 0, cd->cd_quirks));
}
return (ENXIO);
}
DRIVER_MODULE(uart, acpi, uart_acpi_driver, uart_devclass, 0, 0);