Home | History | Annotate | Line # | Download | only in ic 
      1 /* $NetBSD: lm700x.h,v 1.2 2007/10/19 11:59:55 ad 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 (at) 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 
     59 struct 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 
     75 u_int32_t	lm700x_encode_freq(u_int32_t, u_int32_t);
     76 u_int32_t	lm700x_encode_ref(u_int8_t);
     77 u_int8_t	lm700x_decode_ref(u_int32_t);
     78 void	lm700x_hardware_write(struct lm700x_t *, u_int32_t, u_int32_t);
     79 
     80 #endif /* _LM700X_H_ */
     81