drivers/media/dvb-frontends/l64781.h

   1 /*
   2     driver for LSI L64781 COFDM demodulator
   3
   4     Copyright (C) 2001 Holger Waechtler for Convergence Integrated Media GmbH
   5                        Marko Kohtala <marko.kohtala@luukku.com>
   6
   7     This program is free software; you can redistribute it and/or modify
   8     it under the terms of the GNU General Public License as published by
   9     the Free Software Foundation; either version 2 of the License, or
  10     (at your option) any later version.
  11
  12     This program is distributed in the hope that it will be useful,
  13     but WITHOUT ANY WARRANTY; without even the implied warranty of
  14     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  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
  23 #ifndef L64781_H
  24 #define L64781_H
  25
  26 #include <linux/dvb/frontend.h>
  27
  28 struct l64781_config
  29 {
  30         /* the demodulator's i2c address */
  31         u8 demod_address;
  32 };
  33
  34 #if IS_REACHABLE(CONFIG_DVB_L64781)
  35 extern struct dvb_frontend* l64781_attach(const struct l64781_config* config,
  36                                           struct i2c_adapter* i2c);
  37 #else
  38 static inline struct dvb_frontend* l64781_attach(const struct l64781_config* config,
  39                                           struct i2c_adapter* i2c)
  40 {
  41         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  42         return NULL;
  43 }
  44 #endif // CONFIG_DVB_L64781
  45
  46 #endif // L64781_H