1/* $NetBSD: wsbellmux.c,v 1.1 2017/06/11 03:55:56 nat Exp $ */
2/*-
3 * Copyright (c) 2017 Nathanial Sloss <nathanialsloss@yahoo.com.au>
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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
16 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
17 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
18 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
19 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
25 * POSSIBILITY OF SUCH DAMAGE.
26 */
27
28#include <sys/cdefs.h>
29__KERNEL_RCSID(0, "$NetBSD: wsbellmux.c,v 1.1 2017/06/11 03:55:56 nat Exp $");
30
31#include <sys/param.h>
32#include <sys/conf.h>
33#include <sys/types.h>
34#include <sys/device.h>
35#include <sys/errno.h>
36#include <sys/selinfo.h>
37
38#include "wsmux.h"
39
40#include <dev/wscons/wsconsio.h>
41#include <dev/wscons/wsbellvar.h>
42
43/*
44 * Print function (for parent devices).
45 */
46int
47wsbelldevprint(void *aux, const char *pnp)
48{
49
50	if (pnp)
51		aprint_normal("wsbell at %s", pnp);
52	return (UNCONF);
53}
54
55#if NWSMUX > 0
56int
57wsbell_add_mux(int unit, struct wsmux_softc *muxsc)
58{
59	struct wsbell_softc *sc;
60	device_t wsbelldev;
61	cfdriver_t wsbellcd;
62
63	wsbelldev = device_find_by_driver_unit("wsbell", unit);
64	if (wsbelldev == NULL)
65		return ENXIO;
66	wsbellcd = device_cfdriver(wsbelldev);
67	if (wsbellcd == NULL)
68		return ENXIO;
69
70	sc = device_lookup_private(wsbellcd, unit);
71	if (sc == NULL)
72		return ENXIO;
73
74	if (sc->sc_base.me_parent != NULL || sc->sc_base.me_evp != NULL)
75		return (EBUSY);
76
77	return (wsmux_attach_sc(muxsc, &sc->sc_base));
78}
79#endif
80