1 /* 2 * Fujitsu mb86a20s driver 3 * 4 * Copyright (C) 2010 Mauro Carvalho Chehab 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License as 8 * published by the Free Software Foundation version 2. 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 GNU 13 * General Public License for more details. 14 */ 15 16 #ifndef MB86A20S_H 17 #define MB86A20S_H 18 19 #include <linux/dvb/frontend.h> 20 21 /** 22 * struct mb86a20s_config - Define the per-device attributes of the frontend 23 * 24 * @fclk: Clock frequency. If zero, assumes the default 25 * (32.57142 Mhz) 26 * @demod_address: the demodulator's i2c address 27 * @is_serial: if true, TS is serial. Otherwise, TS is parallel 28 */ 29 struct mb86a20s_config { 30 u32 fclk; 31 u8 demod_address; 32 bool is_serial; 33 }; 34 35 #if IS_REACHABLE(CONFIG_DVB_MB86A20S) 36 /** 37 * Attach a mb86a20s demod 38 * 39 * @config: pointer to &struct mb86a20s_config with demod configuration. 40 * @i2c: i2c adapter to use. 41 * 42 * return: FE pointer on success, NULL on failure. 43 */ 44 extern struct dvb_frontend *mb86a20s_attach(const struct mb86a20s_config *config, 45 struct i2c_adapter *i2c); 46 47 #else 48 static inline struct dvb_frontend *mb86a20s_attach( 49 const struct mb86a20s_config *config, struct i2c_adapter *i2c) 50 { 51 printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); 52 return NULL; 53 } 54 #endif 55 56 #endif /* MB86A20S */ 57