1 /* $OpenBSD: maci2c.c,v 1.11 2016/05/23 15:23:20 mglocker Exp $ */
2
3 /*
4 * Copyright (c) 2005 Mark Kettenis
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19 #include <sys/param.h>
20 #include <sys/systm.h>
21 #include <sys/device.h>
22
23 #define _I2C_PRIVATE
24 #include <dev/i2c/i2cvar.h>
25 #include <dev/ofw/openfirm.h>
26
27 #include <arch/macppc/dev/maci2cvar.h>
28
29 void
maciic_scan(struct device * self,struct i2cbus_attach_args * iba,void * aux)30 maciic_scan(struct device *self, struct i2cbus_attach_args *iba, void *aux)
31 {
32 int iba_node = *(int *)aux;
33 struct i2c_attach_args ia;
34 char name[32];
35 u_int32_t reg;
36 int node;
37
38 for (node = OF_child(iba_node); node; node = OF_peer(node)) {
39 if (OF_getprop(node, "reg", ®, sizeof reg) != sizeof reg &&
40 OF_getprop(node, "i2c-address", ®, sizeof reg) != sizeof reg)
41 continue;
42 bzero(&ia, sizeof ia);
43 ia.ia_tag = iba->iba_tag;
44 ia.ia_addr = (reg >> 1);
45 ia.ia_cookie = &node;
46 bzero(name, sizeof name);
47 if (OF_getprop(node, "compatible", &name,
48 sizeof name) && name[0])
49 ia.ia_name = name;
50 if (ia.ia_name == NULL &&
51 OF_getprop(node, "name", &name,
52 sizeof name) && name[0]) {
53 if (strcmp(name, "cereal") == 0)
54 continue;
55 ia.ia_name = name;
56 }
57 /* XXX We should write a real driver for these instead
58 of reaching over from the sound driver that sits on
59 the i2s port. For now hide them. */
60 if (strcmp(name, "deq") == 0 || strcmp(name, "tas3004") == 0)
61 continue;
62 if (ia.ia_name)
63 config_found(self, &ia, iic_print);
64 }
65 }
66