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epled.c revision 1.1 
      1 /*	$NetBSD: epled.c,v 1.1 2005/11/12 05:33:23 hamajima 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 1.1 2005/11/12 05:33:23 hamajima Exp $");
     30 
     31 #include <sys/param.h>
     32 #include <sys/systm.h>
     33 #include <sys/kernel.h>
     34 #include <sys/device.h>
     35 #include <machine/bus.h>
     36 #include <arm/ep93xx/epgpiovar.h>
     37 #include <arm/ep93xx/epledvar.h>
     38 
     39 struct epled_softc {
     40 	struct device		sc_dev;
     41 	int			sc_port;
     42 	int			sc_green;
     43 	int			sc_red;
     44 	struct epgpio_softc	*sc_gpio;
     45 };
     46 
     47 static int epled_match(struct device *, struct cfdata *, void *);
     48 static void epled_attach(struct device *, struct device *, void *);
     49 
     50 CFATTACH_DECL(epled, sizeof(struct epled_softc),
     51 	      epled_match, epled_attach, NULL, NULL);
     52 
     53 static struct epled_softc *the_epled_sc = 0;
     54 
     55 int
     56 epled_match(struct device *parent, struct cfdata *cf, void *aux)
     57 {
     58 	return 1;
     59 }
     60 
     61 void
     62 epled_attach(struct device *parent, struct device *self, void *aux)
     63 {
     64 	struct epled_softc *sc = (struct epled_softc *)self;
     65 	struct epgpio_attach_args *ga = aux;
     66 
     67 	sc->sc_port = ga->ga_port;
     68 	sc->sc_green = ga->ga_bit1;
     69 	sc->sc_red = ga->ga_bit2;
     70 	sc->sc_gpio = (struct epgpio_softc *)parent;
     71 	printf("\n");
     72 
     73 	if (!the_epled_sc)
     74 		the_epled_sc = sc;
     75 #ifdef DIAGNOSTIC
     76 	else
     77 		printf("%s%d is already configured\n",
     78 			sc->sc_dev.dv_xname, sc->sc_dev.dv_unit);
     79 #endif
     80 
     81 	epgpio_out(sc->sc_gpio, sc->sc_port, sc->sc_green);
     82 	epgpio_out(sc->sc_gpio, sc->sc_port, sc->sc_red);
     83 }
     84 
     85 int
     86 epled_red_on(void)
     87 {
     88 	struct epled_softc *sc = the_epled_sc;
     89 
     90 #ifdef DIAGNOSTIC
     91 	if (!sc) {
     92 		printf("epled not configured\n");
     93 		return (ENXIO);
     94 	}
     95 #endif
     96 	epgpio_set(sc->sc_gpio, sc->sc_port, sc->sc_red);
     97 	return 0;
     98 }
     99 
    100 int
    101 epled_red_off(void)
    102 {
    103 	struct epled_softc *sc = the_epled_sc;
    104 
    105 #ifdef DIAGNOSTIC
    106 	if (!sc) {
    107 		printf("epled not configured\n");
    108 		return (ENXIO);
    109 	}
    110 #endif
    111 	epgpio_clear(sc->sc_gpio, sc->sc_port, sc->sc_red);
    112 	return 0;
    113 }
    114 
    115 int
    116 epled_green_on(void)
    117 {
    118 	struct epled_softc *sc = the_epled_sc;
    119 
    120 #ifdef DIAGNOSTIC
    121 	if (!sc) {
    122 		printf("epled not configured\n");
    123 		return (ENXIO);
    124 	}
    125 #endif
    126 	epgpio_set(sc->sc_gpio, sc->sc_port, sc->sc_green);
    127 	return 0;
    128 }
    129 
    130 int
    131 epled_green_off(void)
    132 {
    133 	struct epled_softc *sc = the_epled_sc;
    134 
    135 #ifdef DIAGNOSTIC
    136 	if (!sc) {
    137 		printf("epled not configured\n");
    138 		return (ENXIO);
    139 	}
    140 #endif
    141 	epgpio_clear(sc->sc_gpio, sc->sc_port, sc->sc_green);
    142 	return 0;
    143 }
    144