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aupsc.c revision 1.1 
      1 /* $NetBSD: aupsc.c,v 1.1 2006/02/24 14:34:31 shige Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2006 Shigeyuki Fukushima.
      5  * All rights reserved.
      6  *
      7  * Written by Shigeyuki Fukushima.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above
     15  *    copyright notice, this list of conditions and the following
     16  *    disclaimer in the documentation and/or other materials provided
     17  *    with the distribution.
     18  * 3. The name of the author may not be used to endorse or promote
     19  *    products derived from this software without specific prior
     20  *    written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
     23  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     24  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     25  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
     26  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
     28  * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     29  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     30  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
     31  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     32  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     33  */
     34 
     35 #include <sys/cdefs.h>
     36 __KERNEL_RCSID(0, "$NetBSD: aupsc.c,v 1.1 2006/02/24 14:34:31 shige Exp $");
     37 
     38 #include "locators.h"
     39 
     40 #include <sys/param.h>
     41 #include <sys/systm.h>
     42 #include <sys/device.h>
     43 #include <sys/errno.h>
     44 
     45 #include <machine/bus.h>
     46 #include <machine/cpu.h>
     47 
     48 #include <mips/alchemy/include/aubusvar.h>
     49 #include <mips/alchemy/include/aureg.h>
     50 #include <mips/alchemy/dev/aupscreg.h>
     51 #include <mips/alchemy/dev/aupscvar.h>
     52 
     53 struct aupsc_softc {
     54 	struct device		sc_dev;
     55 	bus_space_tag_t		sc_bust;
     56 	bus_space_handle_t	sc_bush;
     57 	int			sc_pscsel;
     58 };
     59 
     60 const struct aupsc_proto {
     61 	const char *name;
     62 } aupsc_protos [] = {
     63 #if 0
     64 	{ "auaudio" },
     65 	{ "aui2s" },
     66 	{ "ausmbus" },
     67 	{ "auspi" },
     68 #endif
     69 	{ NULL }
     70 };
     71 
     72 static int	aupsc_match(struct device *, struct cfdata *, void *);
     73 static void	aupsc_attach(struct device *, struct device *, void *);
     74 static int	aupsc_submatch(struct device *parent, struct cfdata *cf,
     75 				const int *ldesc, void *aux);
     76 static int	aupsc_print(void *aux, const char *pnp);
     77 
     78 CFATTACH_DECL(aupsc, sizeof(struct aupsc_softc),
     79 	aupsc_match, aupsc_attach, NULL, NULL);
     80 
     81 static int
     82 aupsc_match(struct device *parent, struct cfdata *cf, void *aux)
     83 {
     84 	struct aubus_attach_args *aa = (struct aubus_attach_args *)aux;
     85 
     86 	if (strcmp(aa->aa_name, cf->cf_name) != 0)
     87 		return 0;
     88 
     89 	return 1;
     90 }
     91 
     92 static void
     93 aupsc_attach(struct device *parent, struct device *self, void *aux)
     94 {
     95 	int i;
     96 	uint32_t rv;
     97 	struct aupsc_softc *sc = (struct aupsc_softc *)self;
     98 	struct aubus_attach_args *aa = (struct aubus_attach_args *)aux;
     99 	struct aupsc_attach_args pa;
    100 
    101 	sc->sc_bust = aa->aa_st;
    102 	if (bus_space_map(sc->sc_bust, aa->aa_addr,
    103 			AUPSC_SIZE, 0, &sc->sc_bush) != 0) {
    104 		aprint_normal(": unable to map device registers\n");
    105 		return;
    106 	}
    107 
    108 	/* Initialize PSC_SEL register */
    109 	sc->sc_pscsel = AUPSC_SEL_DISABLE;
    110 	rv = bus_space_read_4(sc->sc_bust, sc->sc_bush, AUPSC_SEL);
    111 	bus_space_write_4(sc->sc_bust, sc->sc_bush,
    112 		AUPSC_SEL, (rv & AUPSC_SEL_PS(AUPSC_SEL_DISABLE)));
    113 
    114 	aprint_normal(": Alchemy PSC\n");
    115 
    116 	for (i = 0 ; aupsc_protos[i].name != NULL ; i++) {
    117 		pa.aupsc_name = aupsc_protos[i].name;
    118 		pa.aupsc_bust = sc->sc_bust;
    119 		pa.aupsc_bush = sc->sc_bush;
    120 
    121 		(void) config_found_sm_loc(self, "aupsc", NULL,
    122 			&pa, aupsc_print, aupsc_submatch);
    123         }
    124 }
    125 
    126 static int
    127 aupsc_submatch(struct device *parent, struct cfdata *cf,
    128 	const int *ldesc, void *aux)
    129 {
    130 
    131 	return config_match(parent, cf, aux);
    132 }
    133 
    134 static int
    135 aupsc_print(void *aux, const char *pnp)
    136 {
    137 	struct aupsc_attach_args *pa = aux;
    138 
    139 	if (pnp)
    140 		aprint_normal("%s at %s", pa->aupsc_name, pnp);
    141 
    142 	return UNCONF;
    143 }
    144