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Diffstat (limited to 'sys/dev/ic/lm700x.h')
| -rw-r--r-- | sys/dev/ic/lm700x.h | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/sys/dev/ic/lm700x.h b/sys/dev/ic/lm700x.h new file mode 100644 index 00000000000..4afab020242 --- /dev/null +++ b/sys/dev/ic/lm700x.h @@ -0,0 +1,79 @@ +/* $OpenBSD: lm700x.h,v 1.1 2001/10/04 19:46:46 gluk Exp $ */ +/* $RuOBSD: lm700x.h,v 1.3 2001/10/04 19:25:39 gluk Exp $ */ + +/* + * Copyright (c) 2001 Vladimir Popov <jumbo@narod.ru> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; + * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF + * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _LM700X_H_ +#define _LM700X_H_ + +#include <sys/types.h> + +#include <machine/bus.h> + +#define LM700X_REGISTER_LENGTH 24 + +#define LM700X_DATA_MASK 0xFFC000 +#define LM700X_FREQ_MASK 0x003FFF + +#define LM700X_FREQ(x) (x << 0) /* 0x003FFF */ +#define LM700X_LSI(x) (x << 14) /* 0x00C000 */ /* always zero */ +#define LM700X_BAND(x) (x << 16) /* 0x070000 */ +#define LM700X_STEREO LM700X_BAND(3) +#define LM700X_MONO LM700X_BAND(1) +#define LM700X_TIME_BASE(x) (x << 19) /* 0x080000 */ /* always zero */ +#define LM700X_REF_FREQ(x) (x << 20) /* 0x700000 */ +#define LM700X_REF_100 LM700X_REF_FREQ(0) +#define LM700X_REF_025 LM700X_REF_FREQ(2) +#define LM700X_REF_050 LM700X_REF_FREQ(4) +/* The rest is for an AM band */ + +#define LM700X_DIVIDER_AM (0 << 23) /* 0x000000 */ +#define LM700X_DIVIDER_FM (1 << 23) /* 0x800000 */ + +#define LM700X_WRITE_DELAY 6 /* 6 microseconds */ + +struct lm700x_t { + bus_space_tag_t iot; + bus_space_handle_t ioh; + bus_size_t offset; + + u_long wzcl; /* write zero clock low */ + u_long wzch; /* write zero clock high */ + u_long wocl; /* write one clock low */ + u_long woch; /* write one clock high */ + u_long initdata; + u_long rsetdata; + + void (*init)(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_long); + void (*rset)(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_long); +}; + +u_long lm700x_encode_freq(u_long, u_long); +u_long lm700x_encode_ref(u_char); +u_char lm700x_decode_ref(u_long); +void lm700x_hardware_write(struct lm700x_t *, u_long, u_long); + +#endif /* _LM700X_H_ */ |