drivers/media/tuners/mt2131.h

   1 /*
   2  *  Driver for Microtune MT2131 "QAM/8VSB single chip tuner"
   3  *
   4  *  Copyright (c) 2006 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 __MT2131_H__
  19 #define __MT2131_H__
  20
  21 struct dvb_frontend;
  22 struct i2c_adapter;
  23
  24 struct mt2131_config {
  25         u8 i2c_address;
  26         u8 clock_out; /* 0 = off, 1 = CLK/4, 2 = CLK/2, 3 = CLK/1 */
  27 };
  28
  29 #if IS_REACHABLE(CONFIG_MEDIA_TUNER_MT2131)
  30 extern struct dvb_frontend* mt2131_attach(struct dvb_frontend *fe,
  31                                           struct i2c_adapter *i2c,
  32                                           struct mt2131_config *cfg,
  33                                           u16 if1);
  34 #else
  35 static inline struct dvb_frontend* mt2131_attach(struct dvb_frontend *fe,
  36                                                  struct i2c_adapter *i2c,
  37                                                  struct mt2131_config *cfg,
  38                                                  u16 if1)
  39 {
  40         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  41         return NULL;
  42 }
  43 #endif /* CONFIG_MEDIA_TUNER_MT2131 */
  44
  45 #endif /* __MT2131_H__ */