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