1 /* $NetBSD: epled.c,v 1.5 2021/11/21 08:25:26 skrll Exp $ */
2
3 /*
4 * Copyright (c) 2005 HAMAJIMA Katsuomi. 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 __KERNEL_RCSID(0, "$NetBSD: epled.c,v 1.5 2021/11/21 08:25:26 skrll Exp $");
30
31 #include <sys/param.h>
32 #include <sys/systm.h>
33 #include <sys/kernel.h>
34 #include <sys/device.h>
35 #include <sys/bus.h>
36 #include <arm/ep93xx/epgpiovar.h>
37 #include <arm/ep93xx/epledvar.h>
38
39 struct epled_softc {
40 int sc_port;
41 int sc_green;
42 int sc_red;
43 struct epgpio_softc *sc_gpio;
44 };
45
46 static int epled_match(device_t, cfdata_t, void *);
47 static void epled_attach(device_t, device_t, void *);
48
49 CFATTACH_DECL_NEW(epled, sizeof(struct epled_softc),
50 epled_match, epled_attach, NULL, NULL);
51
52 static struct epled_softc *the_epled_sc = 0;
53
54 int
epled_match(device_t parent,cfdata_t cf,void * aux)55 epled_match(device_t parent, cfdata_t cf, void *aux)
56 {
57 return 1;
58 }
59
60 void
epled_attach(device_t parent,device_t self,void * aux)61 epled_attach(device_t parent, device_t self, void *aux)
62 {
63 struct epled_softc *sc = device_private(self);
64 struct epgpio_attach_args *ga = aux;
65
66 sc->sc_port = ga->ga_port;
67 sc->sc_green = ga->ga_bit1;
68 sc->sc_red = ga->ga_bit2;
69 sc->sc_gpio = (struct epgpio_softc *)parent;
70 printf("\n");
71
72 if (!the_epled_sc)
73 the_epled_sc = sc;
74 #ifdef DIAGNOSTIC
75 else
76 printf("%s is already configured\n", device_xname(self));
77 #endif
78
79 epgpio_out(sc->sc_gpio, sc->sc_port, sc->sc_green);
80 epgpio_out(sc->sc_gpio, sc->sc_port, sc->sc_red);
81 }
82
83 int
epled_red_on(void)84 epled_red_on(void)
85 {
86 struct epled_softc *sc = the_epled_sc;
87
88 #ifdef DIAGNOSTIC
89 if (!sc) {
90 printf("epled not configured\n");
91 return (ENXIO);
92 }
93 #endif
94 epgpio_set(sc->sc_gpio, sc->sc_port, sc->sc_red);
95 return 0;
96 }
97
98 int
epled_red_off(void)99 epled_red_off(void)
100 {
101 struct epled_softc *sc = the_epled_sc;
102
103 #ifdef DIAGNOSTIC
104 if (!sc) {
105 printf("epled not configured\n");
106 return (ENXIO);
107 }
108 #endif
109 epgpio_clear(sc->sc_gpio, sc->sc_port, sc->sc_red);
110 return 0;
111 }
112
113 int
epled_green_on(void)114 epled_green_on(void)
115 {
116 struct epled_softc *sc = the_epled_sc;
117
118 #ifdef DIAGNOSTIC
119 if (!sc) {
120 printf("epled not configured\n");
121 return (ENXIO);
122 }
123 #endif
124 epgpio_set(sc->sc_gpio, sc->sc_port, sc->sc_green);
125 return 0;
126 }
127
128 int
epled_green_off(void)129 epled_green_off(void)
130 {
131 struct epled_softc *sc = the_epled_sc;
132
133 #ifdef DIAGNOSTIC
134 if (!sc) {
135 printf("epled not configured\n");
136 return (ENXIO);
137 }
138 #endif
139 epgpio_clear(sc->sc_gpio, sc->sc_port, sc->sc_green);
140 return 0;
141 }
142