110 lines
3.2 KiB
C
110 lines
3.2 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*
|
|
* 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>
|
|
#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 acpi_uart_compat_data *cd;
|
|
struct uart_softc *sc;
|
|
uint32_t rclk;
|
|
ssize_t size;
|
|
|
|
sc = device_get_softc(dev);
|
|
rclk = 0;
|
|
|
|
cd = uart_acpi_find_device(dev);
|
|
if (cd == NULL)
|
|
return (ENXIO);
|
|
|
|
sc->sc_class = cd->cd_class;
|
|
if (cd->cd_desc != NULL)
|
|
device_set_desc(dev, cd->cd_desc);
|
|
|
|
size = device_get_property(dev, "clock-frequency", &rclk,
|
|
sizeof(rclk), DEVICE_PROP_UINT32);
|
|
if (size < 0 || rclk == 0)
|
|
rclk = cd->cd_rclk;
|
|
|
|
return (uart_bus_probe(dev, cd->cd_regshft, cd->cd_regiowidth,
|
|
rclk, 0, 0, cd->cd_quirks));
|
|
}
|
|
|
|
DRIVER_MODULE(uart, acpi, uart_acpi_driver, 0, 0);
|