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/11.1/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
54 static int
55 uart_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
69 static 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
77 static driver_t uart_chipc_driver = {
78 uart_driver_name,
79 uart_chipc_methods,
80 sizeof(struct uart_softc),
81 };
82
83 DRIVER_MODULE(uart, bhnd_chipc, uart_chipc_driver, uart_devclass, 0, 0);
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