1 /* $OpenBSD: pcf8584var.h,v 1.4 2007/05/21 03:11:11 jsg Exp $ */
2
3 /*
4 * Copyright (c) 2006 David Gwynne <dlg@openbsd.org>
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 struct pcfiic_softc {
20 struct device sc_dev;
21
22 bus_space_tag_t sc_iot;
23 bus_space_handle_t sc_ioh;
24 bus_space_handle_t sc_ioh2;
25 int sc_master;
26 u_int8_t sc_addr;
27 u_int8_t sc_clock;
28 u_int8_t sc_regmap[2];
29
30 int sc_poll;
31
32 struct i2c_controller sc_i2c;
33 struct rwlock sc_lock;
34 };
35
36 /* clock divisor settings */
37 #define PCF_CLOCK_3 0x00 /* 3 MHz */
38 #define PCF_CLOCK_4_43 0x10 /* 4.43 MHz */
39 #define PCF_CLOCK_6 0x14 /* 6 MHz */
40 #define PCF_CLOCK_8 0x18 /* 8 MHz */
41 #define PCF_CLOCK_12 0x1c /* 12 MHz */
42
43 void pcfiic_attach(struct pcfiic_softc *, i2c_addr_t, u_int8_t, int,
44 void (*)(struct device *, struct i2cbus_attach_args *, void *),
45 void *);
46 int pcfiic_intr(void *);