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