1/*-
2 * Copyright (c) 2016 Michael Zhilin <mizhka@gmail.com>
3 *
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
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.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28#include <sys/cdefs.h>
29__FBSDID("$FreeBSD: releng/11.0/sys/mips/broadcom/uart_bus_chipc.c 302189 2016-06-25 04:33:00Z landonf $");
30
31#include "opt_uart.h"
32
33#include <sys/param.h>
34#include <sys/systm.h>
35#include <sys/bus.h>
36#include <sys/conf.h>
37#include <sys/kernel.h>
38#include <sys/module.h>
39#include <sys/rman.h>
40
41#include <machine/bus.h>
42#include <machine/resource.h>
43
44#include <dev/uart/uart.h>
45#include <dev/uart/uart_bus.h>
46#include <dev/uart/uart_cpu.h>
47
48#include "uart_if.h"
49#include "bhnd_chipc_if.h"
50
51#include "bcm_socinfo.h"
52
53
54static int
55uart_chipc_probe(device_t dev)
56{
57	struct uart_softc 	*sc;
58	struct bcm_socinfo	*socinfo;
59
60	sc = device_get_softc(dev);
61	sc->sc_class = &uart_ns8250_class;
62
63	/* TODO: UART rate should be calculated from CPU clock speed
64	 * as fetched from bhnd bus */
65	socinfo = bcm_get_socinfo();
66	return (uart_bus_probe(dev, 0, socinfo->uartrate, 0, 0));
67}
68
69static device_method_t uart_chipc_methods[] = {
70	/* Device interface */
71	DEVMETHOD(device_probe,		uart_chipc_probe),
72	DEVMETHOD(device_attach,	uart_bus_attach),
73	DEVMETHOD(device_detach,	uart_bus_detach),
74	{ 0, 0 }
75};
76
77static driver_t uart_chipc_driver = {
78	uart_driver_name,
79	uart_chipc_methods,
80	sizeof(struct uart_softc),
81};
82
83DRIVER_MODULE(uart, bhnd_chipc, uart_chipc_driver, uart_devclass, 0, 0);
84