1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Driver for Sharp IX2505V (marked B0017) DVB-S silicon tuner 4 * 5 * Copyright (C) 2010 Malcolm Priestley 6 */ 7 8 #ifndef DVB_IX2505V_H 9 #define DVB_IX2505V_H 10 11 #include <linux/i2c.h> 12 #include <media/dvb_frontend.h> 13 14 /** 15 * struct ix2505v_config - ix2505 attachment configuration 16 * 17 * @tuner_address: tuner address 18 * @tuner_gain: Baseband AMP gain control 0/1=0dB(default) 2=-2bB 3=-4dB 19 * @tuner_chargepump: Charge pump output +/- 0=120 1=260 2=555 3=1200(default) 20 * @min_delay_ms: delay after tune 21 * @tuner_write_only: disables reads 22 */ 23 struct ix2505v_config { 24 u8 tuner_address; 25 u8 tuner_gain; 26 u8 tuner_chargepump; 27 int min_delay_ms; 28 u8 tuner_write_only; 29 30 }; 31 32 #if IS_REACHABLE(CONFIG_DVB_IX2505V) 33 /** 34 * ix2505v_attach - Attach a ix2505v tuner to the supplied frontend structure. 35 * 36 * @fe: Frontend to attach to. 37 * @config: pointer to &struct ix2505v_config 38 * @i2c: pointer to &struct i2c_adapter. 39 * 40 * return: FE pointer on success, NULL on failure. 41 */ 42 extern struct dvb_frontend *ix2505v_attach(struct dvb_frontend *fe, 43 const struct ix2505v_config *config, struct i2c_adapter *i2c); 44 #else ix2505v_attach(struct dvb_frontend * fe,const struct ix2505v_config * config,struct i2c_adapter * i2c)45static inline struct dvb_frontend *ix2505v_attach(struct dvb_frontend *fe, 46 const struct ix2505v_config *config, struct i2c_adapter *i2c) 47 { 48 printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); 49 return NULL; 50 } 51 #endif 52 53 #endif /* DVB_IX2505V_H */ 54