155 lines
4.2 KiB
C
155 lines
4.2 KiB
C
/* $NetBSD: vidc20.c,v 1.9 2003/07/15 00:24:46 lukem Exp $ */
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/*
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* Copyright (c) 1997 Mark Brinicombe
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* Copyright (c) 1997 Causality Limited
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Mark Brinicombe
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* 4. The name of the company nor the name of the author may be used to
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* endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*
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* RiscBSD kernel project
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*
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* vidc20.c
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*
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* VIDC20 driver
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*
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* Created : 22/02/97
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: vidc20.c,v 1.9 2003/07/15 00:24:46 lukem Exp $");
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <machine/bus.h>
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#include <arm/iomd/vidc.h>
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#include <machine/io.h>
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#include <arm/iomd/iomdreg.h>
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#include <arm/iomd/iomdvar.h>
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#include <arm/mainbus/mainbus.h>
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#include "locators.h"
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struct vidc20_softc {
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struct device sc_dev;
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bus_space_tag_t sc_iot;
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};
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static int vidcmatch(struct device *, struct cfdata *, void *);
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static void vidcattach(struct device *, struct device *, void *);
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static int vidcsearch(struct device *, struct cfdata *, void *);
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/*
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* vidc_base gives the base of the VIDC chip in memory; this is for
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* the rest isnt busspaceified yet. Initialised with VIDC_BASE for
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* backwards compatibility.
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*/
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int *vidc_base = (int *)VIDC_BASE;
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/*
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* vidc_fref is the reference frequency in Mhz of the detected VIDC
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* (dependent on IOMD/IOC)
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* XXX default is RPC600 ?
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*/
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int vidc_fref = 24000000;
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CFATTACH_DECL(vidc, sizeof (struct vidc20_softc),
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vidcmatch, vidcattach, NULL, NULL);
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/*
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* vidcmatch()
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*
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* VIDC20 is a write only device so we cannot probe it
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* We must assume things are ok.
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*/
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static int
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vidcmatch(struct device *parent, struct cfdata *cf, void *aux)
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{
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return(1);
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}
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/*
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* vidcsearch()
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*
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* search routine used during the config of children
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*/
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static int
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vidcsearch(struct device *parent, struct cfdata *cf, void *aux)
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{
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if (config_match(parent, cf, NULL) > 0)
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config_attach(parent, cf, NULL, NULL);
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return (0);
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}
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/*
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* vidcattach()
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*
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* Configure all the child devices of the VIDC
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*/
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static void
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vidcattach(struct device *parent, struct device *self, void *aux)
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{
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struct vidc20_softc *sc = (struct vidc20_softc *)self;
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struct mainbus_attach_args *mb = aux;
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sc->sc_iot = mb->mb_iot;
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/*
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* Since the VIDC is write-only, infer the type of VIDC from the
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* type of IOMD.
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*/
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switch (IOMD_ID) {
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case ARM7500_IOC_ID:
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printf(": ARM7500 video and sound macrocell\n");
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vidc_fref = 32000000;
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break;
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case ARM7500FE_IOC_ID:
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printf(": ARM7500FE video and sound macrocell\n");
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vidc_fref = 32000000;
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break;
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default: /* XXX default? */
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case RPC600_IOMD_ID:
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printf(": VIDC20\n");
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vidc_fref = 24000000;
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break;
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};
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config_search(vidcsearch, self, NULL);
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}
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/* End of vidc20.c */
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