2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2006 Kevin Lo. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include <sys/param.h>
31 #include <sys/systm.h>
34 #include <sys/kernel.h>
35 #include <sys/module.h>
36 #include <machine/bus.h>
38 #include <machine/resource.h>
40 #include <dev/pci/pcivar.h>
41 #include <dev/ic/ns16550.h>
43 #include <dev/uart/uart.h>
44 #include <dev/uart/uart_bus.h>
45 #include <dev/uart/uart_cpu.h>
47 #include <arm/xscale/ixp425/ixp425reg.h>
48 #include <arm/xscale/ixp425/ixp425var.h>
52 static int uart_ixp425_probe(device_t dev);
54 static device_method_t uart_ixp425_methods[] = {
55 /* Device interface */
56 DEVMETHOD(device_probe, uart_ixp425_probe),
57 DEVMETHOD(device_attach, uart_bus_attach),
58 DEVMETHOD(device_detach, uart_bus_detach),
62 static driver_t uart_ixp425_driver = {
65 sizeof(struct uart_softc),
67 DRIVER_MODULE(uart, ixp, uart_ixp425_driver, uart_devclass, 0, 0);
70 uart_ixp425_probe(device_t dev)
72 struct uart_softc *sc;
73 int unit = device_get_unit(dev);
76 sc = device_get_softc(dev);
77 sc->sc_class = &uart_ns8250_class;
78 if (resource_int_value("uart", unit, "rclk", &rclk))
79 rclk = IXP425_UART_FREQ;
81 device_printf(dev, "rclk %u\n", rclk);
83 return uart_bus_probe(dev, 0, 0, rclk, 0, 0);