1/* $NetBSD: lm700x.h,v 1.1 2002/01/01 21:51:40 augustss Exp $ */
2/*	$OpenBSD: lm700x.h,v 1.2 2001/12/06 16:28:18 mickey Exp $	*/
3/* $RuOBSD: lm700x.h,v 1.2 2001/10/18 16:51:36 pva Exp $ */
4
5/*
6 * Copyright (c) 2001 Vladimir Popov <jumbo@narod.ru>
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
23 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
24 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
25 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
26 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
27 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30#ifndef _LM700X_H_
31#define _LM700X_H_
32
33#include <sys/types.h>
34
35#include <sys/bus.h>
36
37#define LM700X_REGISTER_LENGTH	24
38
39#define LM700X_DATA_MASK	0xFFC000
40#define LM700X_FREQ_MASK	0x003FFF
41
42#define LM700X_FREQ(x)		(x << 0)	/* 0x003FFF */
43#define LM700X_LSI(x)		(x << 14)	/* 0x00C000 */ /* always zero */
44#define LM700X_BAND(x)		(x << 16)	/* 0x070000 */
45#define		LM700X_STEREO	LM700X_BAND(3)
46#define		LM700X_MONO	LM700X_BAND(1)
47#define LM700X_TIME_BASE(x)	(x << 19)	/* 0x080000 */ /* always zero */
48#define LM700X_REF_FREQ(x)	(x << 20)	/* 0x700000 */
49#define		LM700X_REF_100	LM700X_REF_FREQ(0)
50#define		LM700X_REF_025	LM700X_REF_FREQ(2)
51#define		LM700X_REF_050	LM700X_REF_FREQ(4)
52/* The rest is for an AM band */
53
54#define LM700X_DIVIDER_AM	(0 << 23)	/* 0x000000 */
55#define LM700X_DIVIDER_FM	(1 << 23)	/* 0x800000 */
56
57#define LM700X_WRITE_DELAY	6		/* 6 microseconds */
58
59struct lm700x_t {
60	bus_space_tag_t	iot;
61	bus_space_handle_t	ioh;
62	bus_size_t	offset;
63
64	u_int32_t	wzcl;	/* write zero clock low */
65	u_int32_t	wzch;	/* write zero clock high */
66	u_int32_t	wocl;	/* write one clock low */
67	u_int32_t	woch;	/* write one clock high */
68	u_int32_t	initdata;
69	u_int32_t	rsetdata;
70
71	void (*init)(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t);
72	void (*rset)(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t);
73};
74
75u_int32_t	lm700x_encode_freq(u_int32_t, u_int32_t);
76u_int32_t	lm700x_encode_ref(u_int8_t);
77u_int8_t	lm700x_decode_ref(u_int32_t);
78void	lm700x_hardware_write(struct lm700x_t *, u_int32_t, u_int32_t);
79
80#endif /* _LM700X_H_ */
81