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 *  You should have received a copy of the GNU General Public License
  18 *  along with this program; if not, write to the Free Software
  19 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20 */
  21
  22#ifndef __XC5000_H__
  23#define __XC5000_H__
  24
  25#include <linux/firmware.h>
  26
  27struct dvb_frontend;
  28struct i2c_adapter;
  29
  30#define XC5000A 1
  31#define XC5000C 2
  32
  33struct xc5000_config {
  34        u8   i2c_address;
  35        u32  if_khz;
  36        u8   radio_input;
  37        u16  xtal_khz;
  38        u16  output_amp;
  39
  40        int chip_id;
  41};
  42
  43/* xc5000 callback command */
  44#define XC5000_TUNER_RESET              0
  45
  46/* Possible Radio inputs */
  47#define XC5000_RADIO_NOT_CONFIGURED             0
  48#define XC5000_RADIO_FM1                        1
  49#define XC5000_RADIO_FM2                        2
  50#define XC5000_RADIO_FM1_MONO                   3
  51
  52/* For each bridge framework, when it attaches either analog or digital,
  53 * it has to store a reference back to its _core equivalent structure,
  54 * so that it can service the hardware by steering gpio's etc.
  55 * Each bridge implementation is different so cast devptr accordingly.
  56 * The xc5000 driver cares not for this value, other than ensuring
  57 * it's passed back to a bridge during tuner_callback().
  58 */
  59
  60#if IS_REACHABLE(CONFIG_MEDIA_TUNER_XC5000)
  61extern struct dvb_frontend *xc5000_attach(struct dvb_frontend *fe,
  62                                          struct i2c_adapter *i2c,
  63                                          const struct xc5000_config *cfg);
  64#else
  65static inline struct dvb_frontend *xc5000_attach(struct dvb_frontend *fe,
  66                                                 struct i2c_adapter *i2c,
  67                                                 const struct xc5000_config *cfg)
  68{
  69        printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  70        return NULL;
  71}
  72#endif
  73
  74#endif
  75