linux/drivers/media/dvb-frontends/mt312.h
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   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
  31struct 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_ENABLED(CONFIG_DVB_MT312)
  40struct dvb_frontend *mt312_attach(const struct mt312_config *config,
  41                                        struct i2c_adapter *i2c);
  42#else
  43static 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 */
  52