LXR linux/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
  23struct dvb_frontend;
  24struct i2c_adapter;
  25
  26#define XC5000A 1
  27#define XC5000C 2
  28
  29struct 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)
  57extern struct dvb_frontend *xc5000_attach(struct dvb_frontend *fe,
  58                                          struct i2c_adapter *i2c,
  59                                          const struct xc5000_config *cfg);
  60#else
  61static 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
  71