Annotation of sys/arch/macppc/dev/macgpio.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: macgpio.c,v 1.6 2007/04/22 22:31:14 deraadt Exp $ */
2: /* $NetBSD: gpio.c,v 1.2 2001/02/27 05:16:33 matt Exp $ */
3:
4: /*-
5: * Copyright (C) 1998 Internet Research Institute, Inc.
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
19: * Internet Research Institute, Inc.
20: * 4. The name of the author may not be used to endorse or promote products
21: * derived from this software without specific prior written permission.
22: *
23: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
24: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
25: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
27: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
28: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
29: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
30: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
31: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
32: * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33: */
34:
35: #include <sys/types.h>
36: #include <sys/param.h>
37: #include <sys/systm.h>
38: #include <sys/kernel.h>
39: #include <sys/device.h>
40: #include <sys/malloc.h>
41:
42: #include <dev/ofw/openfirm.h>
43:
44: #include <machine/autoconf.h>
45: #include <machine/pio.h>
46:
47: #include "adb.h"
48:
49: static void macgpio_attach (struct device *, struct device *, void *);
50: static int macgpio_match (struct device *, void *, void *);
51: static int macgpio_print (void *aux, const char *gpio);
52:
53: static void macgpio_gpio_attach (struct device *, struct device *, void *);
54: static int macgpio_gpio_match (struct device *, void *, void *);
55: static int gpio_intr (void *);
56:
57: struct gpio_softc {
58: struct device sc_dev;
59: u_int8_t *sc_port;
60: };
61:
62: struct cfattach macgpio_ca = {
63: sizeof(struct gpio_softc), macgpio_match, macgpio_attach
64: };
65:
66: struct cfattach macgpio_gpio_ca = {
67: sizeof(struct gpio_softc), macgpio_gpio_match, macgpio_gpio_attach
68: };
69:
70: struct cfdriver macgpio_cd = {
71: NULL, "macgpio", DV_DULL
72: };
73:
74: int
75: macgpio_match(struct device *parent, void *cf, void *aux)
76: {
77: struct confargs *ca = aux;
78:
79: if (strcmp(ca->ca_name, "gpio") != 0)
80: return 0;
81:
82: if (ca->ca_nreg < 8)
83: return 0;
84:
85: return 1;
86: }
87:
88: void
89: macgpio_attach(struct device *parent, struct device *self, void *aux)
90: {
91: struct gpio_softc *sc = (struct gpio_softc *)self;
92: struct confargs *ca = aux, ca2;
93: int child;
94: int namelen;
95: int intr[6];
96: u_int reg[20];
97: char name[32];
98:
99: printf("\n");
100:
101: sc->sc_port = mapiodev(ca->ca_baseaddr + ca->ca_reg[0], ca->ca_reg[1]);
102:
103: ca2.ca_baseaddr = ca->ca_baseaddr;
104: for (child = OF_child(ca->ca_node); child; child = OF_peer(child)) {
105: namelen = OF_getprop(child, "name", name, sizeof(name));
106: if (namelen < 0)
107: continue;
108: if (namelen >= sizeof(name))
109: continue;
110:
111: name[namelen] = 0;
112: ca2.ca_name = name;
113: ca2.ca_node = child;
114:
115: ca2.ca_nreg = OF_getprop(child, "reg", reg, sizeof(reg));
116: ca2.ca_nintr = OF_getprop(child, "AAPL,interrupts", intr,
117: sizeof(intr));
118: if (ca2.ca_nintr == -1)
119: ca2.ca_nintr = OF_getprop(child, "interrupts", intr,
120: sizeof(intr));
121:
122: ca2.ca_reg = reg;
123: ca2.ca_intr = intr;
124:
125: config_found(self, &ca2, macgpio_print);
126: }
127: }
128:
129: int
130: macgpio_print(void *aux, const char *gpio)
131: {
132: struct confargs *ca = aux;
133: if (gpio)
134: printf("\"%s\" at %s", ca->ca_name, gpio);
135:
136: if (ca->ca_nreg > 0)
137: printf(" offset 0x%x", ca->ca_reg[0]);
138:
139: return UNCONF;
140: }
141:
142: int
143: macgpio_gpio_match(struct device *parent, void *cf, void *aux)
144: {
145: struct confargs *ca = aux;
146:
147: if (strcmp(ca->ca_name, "extint-gpio1") != 0)
148: return 0;
149:
150: if (ca->ca_nintr < 4)
151: return 0;
152:
153: return 1;
154: }
155:
156: void
157: macgpio_gpio_attach(struct device *parent, struct device *self, void *aux)
158: {
159: struct gpio_softc *sc = (struct gpio_softc *)self;
160: struct confargs *ca = aux;
161:
162:
163: sc->sc_port = ((struct gpio_softc *) parent)->sc_port;
164: mac_intr_establish(parent, ca->ca_intr[0], IST_LEVEL, IPL_HIGH,
165: gpio_intr, sc, sc->sc_dev.dv_xname);
166:
167: printf(" irq %d\n", ca->ca_intr[0]);
168: }
169:
170: #if NADB > 0
171: extern int adb_intr (void *);
172: extern struct cfdriver adb_cd;
173: #endif
174:
175: int
176: gpio_intr(void *arg)
177: {
178: int rv = 0;
179:
180: #if NADB > 0
181: if (adb_cd.cd_devs[0] != NULL)
182: rv = adb_intr(adb_cd.cd_devs[0]);
183: #endif
184:
185: return rv;
186: }
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