1 /** 2 * Driver for Sharp IX2505V (marked B0017) DVB-S silicon tuner 3 * 4 * Copyright (C) 2010 Malcolm Priestley 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 Version 2, as 8 * published by the Free Software Foundation. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 */ 15 16 #ifndef DVB_IX2505V_H 17 #define DVB_IX2505V_H 18 19 #include <linux/i2c.h> 20 #include <media/dvb_frontend.h> 21 22 /** 23 * struct ix2505v_config - ix2505 attachment configuration 24 * 25 * @tuner_address: tuner address 26 * @tuner_gain: Baseband AMP gain control 0/1=0dB(default) 2=-2bB 3=-4dB 27 * @tuner_chargepump: Charge pump output +/- 0=120 1=260 2=555 3=1200(default) 28 * @min_delay_ms: delay after tune 29 * @tuner_write_only: disables reads 30 */ 31 struct ix2505v_config { 32 u8 tuner_address; 33 u8 tuner_gain; 34 u8 tuner_chargepump; 35 int min_delay_ms; 36 u8 tuner_write_only; 37 38 }; 39 40 #if IS_REACHABLE(CONFIG_DVB_IX2505V) 41 /** 42 * Attach a ix2505v tuner to the supplied frontend structure. 43 * 44 * @fe: Frontend to attach to. 45 * @config: pointer to &struct ix2505v_config 46 * @i2c: pointer to &struct i2c_adapter. 47 * 48 * return: FE pointer on success, NULL on failure. 49 */ 50 extern struct dvb_frontend *ix2505v_attach(struct dvb_frontend *fe, 51 const struct ix2505v_config *config, struct i2c_adapter *i2c); 52 #else 53 static inline struct dvb_frontend *ix2505v_attach(struct dvb_frontend *fe, 54 const struct ix2505v_config *config, struct i2c_adapter *i2c) 55 { 56 printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); 57 return NULL; 58 } 59 #endif 60 61 #endif /* DVB_IX2505V_H */ 62