1 /* $NetBSD: gpio.c,v 1.5 2002/10/02 05:30:41 thorpej Exp $ */ 2 3 /*- 4 * Copyright (C) 1998 Internet Research Institute, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by 18 * Internet Research Institute, Inc. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #include <sys/types.h> 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/kernel.h> 38 #include <sys/device.h> 39 #include <sys/malloc.h> 40 #include <machine/autoconf.h> 41 #include <machine/pio.h> 42 43 #include <dev/ofw/openfirm.h> 44 45 #include "adb.h" 46 47 static void gpio_obio_attach (struct device *, struct device *, void *); 48 static int gpio_obio_match (struct device *, struct cfdata *, void *); 49 static int gpio_obio_print (void *aux, const char *gpio); 50 51 static void gpio_gpio_attach (struct device *, struct device *, void *); 52 static int gpio_gpio_match (struct device *, struct cfdata *, void *); 53 static int gpio_intr (void *); 54 55 struct gpio_softc { 56 struct device sc_dev; 57 u_int8_t *sc_port; 58 }; 59 60 CFATTACH_DECL(gpio_obio, sizeof(struct gpio_softc), 61 gpio_obio_match, gpio_obio_attach, NULL, NULL); 62 63 CFATTACH_DECL(gpio_gpio, sizeof(struct gpio_softc), 64 gpio_gpio_match, gpio_gpio_attach, NULL, NULL); 65 66 extern struct cfdriver gpio_cd; 67 68 int 69 gpio_obio_match(struct device *parent, struct cfdata *cf, void *aux) 70 { 71 struct confargs *ca = aux; 72 73 if (strcmp(ca->ca_name, "gpio") != 0) 74 return 0; 75 76 if (ca->ca_nreg == 0) 77 return 0; 78 79 return 1; 80 } 81 82 void 83 gpio_obio_attach(struct device *parent, struct device *self, void *aux) 84 { 85 struct gpio_softc *sc = (struct gpio_softc *)self; 86 struct confargs *ca = aux, ca2; 87 int child; 88 int namelen; 89 int intr[6]; 90 u_int reg[20]; 91 char name[32]; 92 93 printf("\n"); 94 95 sc->sc_port = mapiodev(ca->ca_baseaddr + ca->ca_reg[0], ca->ca_reg[1]); 96 97 ca2.ca_baseaddr = ca->ca_baseaddr; 98 for (child = OF_child(ca->ca_node); child; child = OF_peer(child)) { 99 namelen = OF_getprop(child, "name", name, sizeof(name)); 100 if (namelen < 0) 101 continue; 102 if (namelen >= sizeof(name)) 103 continue; 104 105 name[namelen] = 0; 106 ca2.ca_name = name; 107 ca2.ca_node = child; 108 109 ca2.ca_nreg = OF_getprop(child, "reg", reg, sizeof(reg)); 110 ca2.ca_nintr = OF_getprop(child, "AAPL,interrupts", intr, 111 sizeof(intr)); 112 if (ca2.ca_nintr == -1) 113 ca2.ca_nintr = OF_getprop(child, "interrupts", intr, 114 sizeof(intr)); 115 116 ca2.ca_reg = reg; 117 ca2.ca_intr = intr; 118 119 config_found(self, &ca2, gpio_obio_print); 120 } 121 } 122 123 int 124 gpio_obio_print(void *aux, const char *gpio) 125 { 126 struct confargs *ca = aux; 127 128 if (gpio) 129 printf("%s at %s", ca->ca_name, gpio); 130 131 if (ca->ca_nreg > 0) 132 printf(" offset 0x%x", ca->ca_reg[0]); 133 134 return UNCONF; 135 } 136 137 int 138 gpio_gpio_match(struct device *parent, struct cfdata *cf, void *aux) 139 { 140 struct confargs *ca = aux; 141 142 if (strcmp(ca->ca_name, "extint-gpio1") != 0) 143 return 0; 144 145 if (ca->ca_nintr < 0) 146 return 0; 147 148 return 1; 149 } 150 151 void 152 gpio_gpio_attach(struct device *parent, struct device *self, void *aux) 153 { 154 struct gpio_softc *sc = (struct gpio_softc *)self; 155 struct confargs *ca = aux; 156 157 158 sc->sc_port = ((struct gpio_softc *) parent)->sc_port; 159 intr_establish(ca->ca_intr[0], IST_LEVEL, IPL_HIGH, gpio_intr, sc); 160 161 printf(" irq %d\n", ca->ca_intr[0]); 162 } 163 164 #if NADB > 0 165 extern int adb_intr (void *); 166 extern struct cfdriver adb_cd; 167 #endif 168 169 int 170 gpio_intr(void *arg) 171 { 172 int rv = 0; 173 174 #if NADB > 0 175 if (adb_cd.cd_devs[0] != NULL) 176 rv = adb_intr(adb_cd.cd_devs[0]); 177 #endif 178 179 return rv; 180 } 181