summaryrefslogtreecommitdiff
path: root/sys/arch/arm/ep93xx/epled.c
blob: 984449bbbe39d35430d8200c830d98d47bb71dfe (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
/*	$NetBSD: epled.c,v 1.5 2021/11/21 08:25:26 skrll Exp $	*/

/*
 * Copyright (c) 2005 HAMAJIMA Katsuomi. All rights reserved.
 *
 * 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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>
__KERNEL_RCSID(0, "$NetBSD: epled.c,v 1.5 2021/11/21 08:25:26 skrll Exp $");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/bus.h>
#include <arm/ep93xx/epgpiovar.h>
#include <arm/ep93xx/epledvar.h>

struct epled_softc {
	int			sc_port;
	int			sc_green;
	int			sc_red;
	struct epgpio_softc	*sc_gpio;
};

static int epled_match(device_t, cfdata_t, void *);
static void epled_attach(device_t, device_t, void *);

CFATTACH_DECL_NEW(epled, sizeof(struct epled_softc),
	      epled_match, epled_attach, NULL, NULL);

static struct epled_softc *the_epled_sc = 0;

int
epled_match(device_t parent, cfdata_t cf, void *aux)
{
	return 1;
}

void
epled_attach(device_t parent, device_t self, void *aux)
{
	struct epled_softc *sc = device_private(self);
	struct epgpio_attach_args *ga = aux;

	sc->sc_port = ga->ga_port;
	sc->sc_green = ga->ga_bit1;
	sc->sc_red = ga->ga_bit2;
	sc->sc_gpio = (struct epgpio_softc *)parent;
	printf("\n");

	if (!the_epled_sc)
		the_epled_sc = sc;
#ifdef DIAGNOSTIC
	else
		printf("%s is already configured\n", device_xname(self));
#endif

	epgpio_out(sc->sc_gpio, sc->sc_port, sc->sc_green);
	epgpio_out(sc->sc_gpio, sc->sc_port, sc->sc_red);
}

int
epled_red_on(void)
{
	struct epled_softc *sc = the_epled_sc;

#ifdef DIAGNOSTIC
	if (!sc) {
		printf("epled not configured\n");
		return (ENXIO);
	}
#endif
	epgpio_set(sc->sc_gpio, sc->sc_port, sc->sc_red);
	return 0;
}

int
epled_red_off(void)
{
	struct epled_softc *sc = the_epled_sc;

#ifdef DIAGNOSTIC
	if (!sc) {
		printf("epled not configured\n");
		return (ENXIO);
	}
#endif
	epgpio_clear(sc->sc_gpio, sc->sc_port, sc->sc_red);
	return 0;
}

int
epled_green_on(void)
{
	struct epled_softc *sc = the_epled_sc;

#ifdef DIAGNOSTIC
	if (!sc) {
		printf("epled not configured\n");
		return (ENXIO);
	}
#endif
	epgpio_set(sc->sc_gpio, sc->sc_port, sc->sc_green);
	return 0;
}

int
epled_green_off(void)
{
	struct epled_softc *sc = the_epled_sc;

#ifdef DIAGNOSTIC
	if (!sc) {
		printf("epled not configured\n");
		return (ENXIO);
	}
#endif
	epgpio_clear(sc->sc_gpio, sc->sc_port, sc->sc_green);
	return 0;
}