drivers/media/dvb-frontends/mt312.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3     Driver for Zarlink MT312 Satellite Channel Decoder
   4
   5     Copyright (C) 2003 Andreas Oberritter <obi@linuxtv.org>
   6
   7
   8     References:
   9     http://products.zarlink.com/product_profiles/MT312.htm
  10     http://products.zarlink.com/product_profiles/SL1935.htm
  11 */
  12
  13 #ifndef MT312_H
  14 #define MT312_H
  15
  16 #include <linux/dvb/frontend.h>
  17
  18 struct mt312_config {
  19         /* the demodulator's i2c address */
  20         u8 demod_address;
  21
  22         /* inverted voltage setting */
  23         unsigned int voltage_inverted:1;
  24 };
  25
  26 #if IS_REACHABLE(CONFIG_DVB_MT312)
  27 struct dvb_frontend *mt312_attach(const struct mt312_config *config,
  28                                         struct i2c_adapter *i2c);
  29 #else
  30 static inline struct dvb_frontend *mt312_attach(
  31         const struct mt312_config *config, struct i2c_adapter *i2c)
  32 {
  33         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  34         return NULL;
  35 }
  36 #endif /* CONFIG_DVB_MT312 */
  37
  38 #endif /* MT312_H */