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 */ 39