1 /* 2 * Realtek RTL2830 DVB-T demodulator driver 3 * 4 * Copyright (C) 2011 Antti Palosaari <crope@iki.fi> 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 as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License along 17 * with this program; if not, write to the Free Software Foundation, Inc., 18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 19 */ 20 21 #ifndef RTL2830_H 22 #define RTL2830_H 23 24 #include <linux/kconfig.h> 25 #include <linux/dvb/frontend.h> 26 27 struct rtl2830_config { 28 /* 29 * Demodulator I2C address. 30 */ 31 u8 i2c_addr; 32 33 /* 34 * Xtal frequency. 35 * Hz 36 * 4000000, 16000000, 25000000, 28800000 37 */ 38 u32 xtal; 39 40 /* 41 * TS output mode. 42 */ 43 u8 ts_mode; 44 45 /* 46 * Spectrum inversion. 47 */ 48 bool spec_inv; 49 50 /* 51 */ 52 u8 vtop; 53 54 /* 55 */ 56 u8 krf; 57 58 /* 59 */ 60 u8 agc_targ_val; 61 }; 62 63 #if IS_ENABLED(CONFIG_DVB_RTL2830) 64 extern struct dvb_frontend *rtl2830_attach( 65 const struct rtl2830_config *config, 66 struct i2c_adapter *i2c 67 ); 68 69 extern struct i2c_adapter *rtl2830_get_tuner_i2c_adapter( 70 struct dvb_frontend *fe 71 ); 72 #else 73 static inline struct dvb_frontend *rtl2830_attach( 74 const struct rtl2830_config *config, 75 struct i2c_adapter *i2c 76 ) 77 { 78 pr_warn("%s: driver disabled by Kconfig\n", __func__); 79 return NULL; 80 } 81 82 static inline struct i2c_adapter *rtl2830_get_tuner_i2c_adapter( 83 struct dvb_frontend *fe 84 ) 85 { 86 return NULL; 87 } 88 #endif 89 90 #endif /* RTL2830_H */ 91