drivers/media/dvb-frontends/mt312.h

   1 /*
   2     Driver for Zarlink MT312 Satellite Channel Decoder
   3
   4     Copyright (C) 2003 Andreas Oberritter <obi@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     References:
  22     http://products.zarlink.com/product_profiles/MT312.htm
  23     http://products.zarlink.com/product_profiles/SL1935.htm
  24 */
  25
  26 #ifndef MT312_H
  27 #define MT312_H
  28
  29 #include <linux/dvb/frontend.h>
  30
  31 struct mt312_config {
  32         /* the demodulator's i2c address */
  33         u8 demod_address;
  34
  35         /* inverted voltage setting */
  36         unsigned int voltage_inverted:1;
  37 };
  38
  39 #if IS_REACHABLE(CONFIG_DVB_MT312)
  40 struct dvb_frontend *mt312_attach(const struct mt312_config *config,
  41                                         struct i2c_adapter *i2c);
  42 #else
  43 static inline struct dvb_frontend *mt312_attach(
  44         const struct mt312_config *config, struct i2c_adapter *i2c)
  45 {
  46         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  47         return NULL;
  48 }
  49 #endif /* CONFIG_DVB_MT312 */
  50
  51 #endif /* MT312_H */