firmware/export/si4700.h

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  *
   9  * $Id$
  10  *
  11  * Tuner header for the Silicon Labs SI4700
  12  *
  13  * Copyright (C) 2008 Dave Chapman
  14  *
  15  * This program is free software; you can redistribute it and/or
  16  * modify it under the terms of the GNU General Public License
  17  * as published by the Free Software Foundation; either version 2
  18  * of the License, or (at your option) any later version.
  19  *
  20  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  21  * KIND, either express or implied.
  22  *
  23  ****************************************************************************/
  24
  25 #ifndef _SI4700_H_
  26 #define _SI4700_H_
  27
  28 #define HAVE_RADIO_REGION
  29
  30 struct si4700_region_data
  31 {
  32     unsigned char deemphasis; /* 0: 75us, 1: 50us */
  33     unsigned char band; /* 0: us/europe, 1: japan */
  34     unsigned char spacing; /* 0: us/australia (200kHz), 1: europe/japan (100kHz), 2: (50kHz) */
  35 } __attribute__((packed));
  36
  37 extern const struct si4700_region_data si4700_region_data[TUNER_NUM_REGIONS];
  38
  39 struct si4700_dbg_info
  40 {
  41     uint16_t regs[16];  /* Read registers */
  42 };
  43
  44 bool si4700_detect(void);
  45 void si4700_init(void);
  46 int si4700_set(int setting, int value);
  47 int si4700_get(int setting);
  48 void si4700_dbg_info(struct si4700_dbg_info *nfo);
  49
  50 #ifndef CONFIG_TUNER_MULTI
  51 #define tuner_set si4700_set
  52 #define tuner_get si4700_get
  53 #endif
  54
  55 #endif /* _SI4700_H_ */