drivers/media/dvb-frontends/s921.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  *   Sharp s921 driver
   4  *
   5  *   Copyright (C) 2009 Mauro Carvalho Chehab
   6  *   Copyright (C) 2009 Douglas Landgraf <dougsland@redhat.com>
   7  */
   8
   9 #ifndef S921_H
  10 #define S921_H
  11
  12 #include <linux/dvb/frontend.h>
  13
  14 struct s921_config {
  15         /* the demodulator's i2c address */
  16         u8 demod_address;
  17 };
  18
  19 #if IS_REACHABLE(CONFIG_DVB_S921)
  20 extern struct dvb_frontend *s921_attach(const struct s921_config *config,
  21                                            struct i2c_adapter *i2c);
  22 extern struct i2c_adapter *s921_get_tuner_i2c_adapter(struct dvb_frontend *);
  23 #else
  24 static inline struct dvb_frontend *s921_attach(
  25         const struct s921_config *config, struct i2c_adapter *i2c)
  26 {
  27         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  28         return NULL;
  29 }
  30 static inline struct i2c_adapter *
  31         s921_get_tuner_i2c_adapter(struct dvb_frontend *fe)
  32 {
  33         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  34         return NULL;
  35 }
  36 #endif
  37
  38 #endif /* S921_H */