81 lines
3.0 KiB
C
81 lines
3.0 KiB
C
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/* $NetBSD: lm700x.h,v 1.1 2002/01/01 21:51:40 augustss Exp $ */
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/* $OpenBSD: lm700x.h,v 1.2 2001/12/06 16:28:18 mickey Exp $ */
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/* $RuOBSD: lm700x.h,v 1.2 2001/10/18 16:51:36 pva Exp $ */
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/*
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* Copyright (c) 2001 Vladimir Popov <jumbo@narod.ru>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _LM700X_H_
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#define _LM700X_H_
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#include <sys/types.h>
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#include <machine/bus.h>
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#define LM700X_REGISTER_LENGTH 24
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#define LM700X_DATA_MASK 0xFFC000
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#define LM700X_FREQ_MASK 0x003FFF
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#define LM700X_FREQ(x) (x << 0) /* 0x003FFF */
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#define LM700X_LSI(x) (x << 14) /* 0x00C000 */ /* always zero */
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#define LM700X_BAND(x) (x << 16) /* 0x070000 */
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#define LM700X_STEREO LM700X_BAND(3)
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#define LM700X_MONO LM700X_BAND(1)
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#define LM700X_TIME_BASE(x) (x << 19) /* 0x080000 */ /* always zero */
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#define LM700X_REF_FREQ(x) (x << 20) /* 0x700000 */
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#define LM700X_REF_100 LM700X_REF_FREQ(0)
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#define LM700X_REF_025 LM700X_REF_FREQ(2)
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#define LM700X_REF_050 LM700X_REF_FREQ(4)
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/* The rest is for an AM band */
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#define LM700X_DIVIDER_AM (0 << 23) /* 0x000000 */
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#define LM700X_DIVIDER_FM (1 << 23) /* 0x800000 */
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#define LM700X_WRITE_DELAY 6 /* 6 microseconds */
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struct lm700x_t {
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bus_space_tag_t iot;
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bus_space_handle_t ioh;
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bus_size_t offset;
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u_int32_t wzcl; /* write zero clock low */
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u_int32_t wzch; /* write zero clock high */
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u_int32_t wocl; /* write one clock low */
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u_int32_t woch; /* write one clock high */
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u_int32_t initdata;
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u_int32_t rsetdata;
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void (*init)(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t);
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void (*rset)(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t);
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};
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u_int32_t lm700x_encode_freq(u_int32_t, u_int32_t);
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u_int32_t lm700x_encode_ref(u_int8_t);
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u_int8_t lm700x_decode_ref(u_int32_t);
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void lm700x_hardware_write(struct lm700x_t *, u_int32_t, u_int32_t);
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#endif /* _LM700X_H_ */
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