1/*	$OpenBSD: pcf8584var.h,v 1.5 2007/10/20 18:46:21 kettenis 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
19struct 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/* SCL frequency settings */
44#define PCF_FREQ_90		0x00 /* 90 kHz */
45#define PCF_FREQ_45		0x01 /* 45 kHz */
46#define PCF_FREQ_11		0x02 /* 11 kHz */
47#define PCF_FREQ_1_5		0x03 /* 1.5 kHz */
48
49void	pcfiic_attach(struct pcfiic_softc *, i2c_addr_t, u_int8_t, int,
50	    void (*)(struct device *, struct i2cbus_attach_args *, void *),
51	    void *);
52int	pcfiic_intr(void *);
53