Annotation of sys/arch/sparc64/dev/ofwi2c.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: ofwi2c.c,v 1.5 2007/03/29 17:41:33 deraadt Exp $ */
2:
3: /*
4: * Copyright (c) 2006 Theo de Raadt
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: #include <dev/i2c/i2cvar.h>
24: #include <dev/ofw/openfirm.h>
25:
26: #include <dev/pci/pcivar.h>
27: #include <dev/pci/pcireg.h>
28: #include <sparc64/pci_machdep.h>
29:
30: #include <arch/sparc64/dev/ofwi2cvar.h>
31:
32: void
33: ofwiic_pci_scan(struct device *self, struct i2cbus_attach_args *iba, void *aux)
34: {
35: struct pci_attach_args *pa = aux;
36: pcitag_t tag = pa->pa_tag;
37: int iba_node = PCITAG_NODE(tag);
38: char name[32];
39: int node;
40:
41: for (node = OF_child(iba_node); node; node = OF_peer(node)) {
42: memset(name, 0, sizeof(name));
43:
44: if (OF_getprop(node, "compatible", name, sizeof(name)) == -1)
45: continue;
46: if (name[0] == '\0')
47: continue;
48:
49: if (strcmp(name, "i2c-smbus") == 0 ||
50: strcmp(name, "i2c") == 0)
51: ofwiic_scan(self, iba, &node);
52: }
53: }
54:
55: void
56: ofwiic_scan(struct device *self, struct i2cbus_attach_args *iba, void *aux)
57: {
58: int iba_node = *(int *)aux;
59: extern int iic_print(void *, const char *);
60: struct i2c_attach_args ia;
61: char name[32];
62: u_int32_t reg[2];
63: int node;
64:
65: for (node = OF_child(iba_node); node; node = OF_peer(node)) {
66: memset(name, 0, sizeof(name));
67: memset(reg, 0, sizeof(reg));
68:
69: if (OF_getprop(node, "compatible", name, sizeof(name)) == -1)
70: continue;
71: if (name[0] == '\0')
72: continue;
73:
74: if (OF_getprop(node, "reg", reg, sizeof(reg)) == -1)
75: continue;
76:
77: memset(&ia, 0, sizeof(ia));
78: ia.ia_tag = iba->iba_tag;
79: ia.ia_addr = (reg[0] << 7) | (reg[1] >> 1);
80: ia.ia_name = name;
81: ia.ia_cookie = &node;
82:
83: if (strncmp(ia.ia_name, "i2c-", strlen("i2c-")) == 0)
84: ia.ia_name += strlen("i2c-");
85:
86: /* skip totally boring devices */
87: if (strcmp(ia.ia_name, "at24c64") == 0 ||
88: strcmp(ia.ia_name, "at34c02") == 0)
89: continue;
90:
91: config_found(self, &ia, iic_print);
92: }
93: }
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