Home | History | Annotate | Line # | Download | only in ixm1200 
      1 /* $NetBSD: nappi_nr.c,v 1.11 2012/10/27 17:17:48 chs Exp $ */
      2 
      3 /*
      4  * Copyright (c) 2002 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Ichiro FUKUHARA and Naoto Shimazaki.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 __KERNEL_RCSID(0, "$NetBSD: nappi_nr.c,v 1.11 2012/10/27 17:17:48 chs Exp $");
     34 
     35 /*
     36  * LED support for NAPPI.
     37  */
     38 
     39 #include <sys/param.h>
     40 #include <sys/types.h>
     41 #include <sys/callout.h>
     42 #include <sys/device.h>
     43 #include <sys/kernel.h>
     44 #include <sys/systm.h>
     45 
     46 #include <sys/bus.h>
     47 
     48 #include <arm/ixp12x0/ixpsipvar.h>
     49 
     50 static int	nappinr_match(device_t, cfdata_t, void *);
     51 static void	nappinr_attach(device_t, device_t, void *);
     52 #if 0
     53 static int	nappinr_activate(device_t, enum devact);
     54 #endif
     55 static void	nappinr_callout(void *);
     56 
     57 struct nappinr_softc {
     58 	bus_space_tag_t		sc_iot;
     59 	bus_space_handle_t	sc_ioh;
     60 	bus_addr_t		sc_baseaddr;
     61 	bus_space_handle_t	sc_pos;
     62 	struct callout		sc_co;
     63 };
     64 
     65 CFATTACH_DECL_NEW(nappinr, sizeof(struct nappinr_softc),
     66     nappinr_match, nappinr_attach, NULL, NULL);
     67 
     68 static int
     69 nappinr_match(device_t parent, cfdata_t match, void *aux)
     70 {
     71 	return (1);
     72 }
     73 
     74 static void
     75 nappinr_attach(device_t parent, device_t self, void *aux)
     76 {
     77 	struct nappinr_softc*		sc = device_private(self);
     78 	struct ixpsip_attach_args*	sa = aux;
     79 
     80 	printf("\n");
     81 
     82   	sc->sc_iot = sa->sa_iot;
     83   	sc->sc_baseaddr = sa->sa_addr;
     84 
     85 	if (bus_space_map(sa->sa_iot, sa->sa_addr, sa->sa_size, 0,
     86 			  &sc->sc_ioh)) {
     87 		printf("%s: unable to map registers\n", device_xname(self));
     88 		return;
     89 	}
     90 
     91 	callout_init(&sc->sc_co, 0);
     92 	callout_reset(&sc->sc_co, hz / 10, nappinr_callout, sc);
     93 }
     94 
     95 #if 0
     96 static int
     97 nappinr_activate(device_t self, enum devact act)
     98 {
     99 	printf("nappinr_activate act=%d\n", act);
    100 	return 0;
    101 }
    102 #endif
    103 
    104 static void
    105 nappinr_callout(void *arg)
    106 {
    107 	static const int	ptn[] = { 1, 2, 4, 8, 4, 2 };
    108 	struct nappinr_softc	*sc = arg;
    109 	uint32_t v;
    110 
    111 	v = ptn[sc->sc_pos++ % 6];
    112 	v |= ptn[sc->sc_pos++ % 6] << 4;
    113 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, 0, v);
    114 	callout_reset(&sc->sc_co, hz / 10, nappinr_callout, sc);
    115 }
    116