1 /* $NetBSD: vidc20.c,v 1.15 2006/08/05 18:22:57 bjh21 Exp $ */ 2 3 /* 4 * Copyright (c) 1997 Mark Brinicombe 5 * Copyright (c) 1997 Causality Limited 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Mark Brinicombe 19 * 4. The name of the company nor the name of the author may be used to 20 * endorse or promote products derived from this software without specific 21 * prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 24 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 25 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE 27 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 33 * THE POSSIBILITY OF SUCH DAMAGE. 34 * 35 * RiscBSD kernel project 36 * 37 * vidc20.c 38 * 39 * VIDC20 driver 40 * 41 * Created : 22/02/97 42 */ 43 44 #include <sys/cdefs.h> 45 __KERNEL_RCSID(0, "$NetBSD: vidc20.c,v 1.15 2006/08/05 18:22:57 bjh21 Exp $"); 46 47 #include <sys/types.h> 48 #include <sys/param.h> 49 #include <sys/systm.h> 50 #include <sys/device.h> 51 52 #include <machine/bus.h> 53 #include <arm/iomd/vidc.h> 54 #include <machine/io.h> 55 #include <arm/iomd/iomdreg.h> 56 #include <arm/iomd/iomdvar.h> 57 #include <arm/mainbus/mainbus.h> 58 59 #include "locators.h" 60 61 struct vidc20_softc { 62 struct device sc_dev; 63 bus_space_tag_t sc_iot; 64 }; 65 66 static int vidcmatch(struct device *, struct cfdata *, void *); 67 static void vidcattach(struct device *, struct device *, void *); 68 static int vidcsearch(struct device *, struct cfdata *, 69 const int *, void *); 70 71 /* 72 * vidc_base gives the base of the VIDC chip in memory; this is for 73 * the rest isnt busspaceified yet. Initialised with VIDC_BASE for 74 * backwards compatibility. 75 */ 76 int *vidc_base = (int *)VIDC_BASE; 77 78 79 /* 80 * vidc_fref is the reference frequency in MHz of the detected VIDC 81 * (dependent on IOMD/IOC) 82 * XXX default is RPC600 ? 83 */ 84 int vidc_fref = 24000000; 85 86 87 CFATTACH_DECL(vidc, sizeof (struct vidc20_softc), 88 vidcmatch, vidcattach, NULL, NULL); 89 90 /* 91 * vidcmatch() 92 * 93 * VIDC20 is a write only device so we cannot probe it 94 * We must assume things are ok. 95 */ 96 static int 97 vidcmatch(struct device *parent, struct cfdata *cf, void *aux) 98 { 99 100 return 1; 101 } 102 103 /* 104 * vidcsearch() 105 * 106 * search routine used during the config of children 107 */ 108 109 static int 110 vidcsearch(struct device *parent, struct cfdata *cf, 111 const int *ldesc, void *aux) 112 { 113 114 if (config_match(parent, cf, NULL) > 0) 115 config_attach(parent, cf, NULL, NULL); 116 117 return 0; 118 } 119 120 /* 121 * vidcattach() 122 * 123 * Configure all the child devices of the VIDC 124 */ 125 static void 126 vidcattach(struct device *parent, struct device *self, void *aux) 127 { 128 struct vidc20_softc *sc = (struct vidc20_softc *)self; 129 struct mainbus_attach_args *mb = aux; 130 131 sc->sc_iot = mb->mb_iot; 132 133 /* 134 * Since the VIDC is write-only, infer the type of VIDC from the 135 * type of IOMD. 136 */ 137 switch (IOMD_ID) { 138 case ARM7500_IOC_ID: 139 printf(": ARM7500 video and sound macrocell\n"); 140 vidc_fref = 32000000; 141 break; 142 case ARM7500FE_IOC_ID: 143 printf(": ARM7500FE video and sound macrocell\n"); 144 vidc_fref = 32000000; 145 break; 146 default: /* XXX default? */ 147 case RPC600_IOMD_ID: 148 printf(": VIDC20\n"); 149 vidc_fref = 24000000; 150 break; 151 } 152 153 config_search_ia(vidcsearch, self, "vidc", NULL); 154 } 155 156 /* End of vidc20.c */ 157