drivers/media/tuners/xc5000.h

   1 /*
   2  *  Driver for Xceive XC5000 "QAM/8VSB single chip tuner"
   3  *
   4  *  Copyright (c) 2007 Steven Toth <stoth@linuxtv.org>
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *
  15  *  GNU General Public License for more details.
  16  */
  17
  18 #ifndef __XC5000_H__
  19 #define __XC5000_H__
  20
  21 #include <linux/firmware.h>
  22
  23 struct dvb_frontend;
  24 struct i2c_adapter;
  25
  26 #define XC5000A 1
  27 #define XC5000C 2
  28
  29 struct xc5000_config {
  30         u8   i2c_address;
  31         u32  if_khz;
  32         u8   radio_input;
  33         u16  xtal_khz;
  34         u16  output_amp;
  35
  36         int chip_id;
  37 };
  38
  39 /* xc5000 callback command */
  40 #define XC5000_TUNER_RESET              0
  41
  42 /* Possible Radio inputs */
  43 #define XC5000_RADIO_NOT_CONFIGURED             0
  44 #define XC5000_RADIO_FM1                        1
  45 #define XC5000_RADIO_FM2                        2
  46 #define XC5000_RADIO_FM1_MONO                   3
  47
  48 /* For each bridge framework, when it attaches either analog or digital,
  49  * it has to store a reference back to its _core equivalent structure,
  50  * so that it can service the hardware by steering gpio's etc.
  51  * Each bridge implementation is different so cast devptr accordingly.
  52  * The xc5000 driver cares not for this value, other than ensuring
  53  * it's passed back to a bridge during tuner_callback().
  54  */
  55
  56 #if IS_REACHABLE(CONFIG_MEDIA_TUNER_XC5000)
  57 extern struct dvb_frontend *xc5000_attach(struct dvb_frontend *fe,
  58                                           struct i2c_adapter *i2c,
  59                                           const struct xc5000_config *cfg);
  60 #else
  61 static inline struct dvb_frontend *xc5000_attach(struct dvb_frontend *fe,
  62                                                  struct i2c_adapter *i2c,
  63                                                  const struct xc5000_config *cfg)
  64 {
  65         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  66         return NULL;
  67 }
  68 #endif
  69
  70 #endif