1 /* 2 VES1820 - Single Chip Cable Channel Receiver driver module 3 4 Copyright (C) 1999 Convergence Integrated Media GmbH <ralph@convergence.de> 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 17 along with this program; if not, write to the Free Software 18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 19 */ 20 21 #ifndef VES1820_H 22 #define VES1820_H 23 24 #include <linux/dvb/frontend.h> 25 26 #define VES1820_SELAGC_PWM 0 27 #define VES1820_SELAGC_SIGNAMPERR 1 28 29 struct ves1820_config 30 { 31 /* the demodulator's i2c address */ 32 u8 demod_address; 33 34 /* value of XIN to use */ 35 u32 xin; 36 37 /* does inversion need inverted? */ 38 u8 invert:1; 39 40 /* SELAGC control */ 41 u8 selagc:1; 42 }; 43 44 #if IS_REACHABLE(CONFIG_DVB_VES1820) 45 extern struct dvb_frontend* ves1820_attach(const struct ves1820_config* config, 46 struct i2c_adapter* i2c, u8 pwm); 47 #else 48 static inline struct dvb_frontend* ves1820_attach(const struct ves1820_config* config, 49 struct i2c_adapter* i2c, u8 pwm) 50 { 51 printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); 52 return NULL; 53 } 54 #endif // CONFIG_DVB_VES1820 55 56 #endif // VES1820_H 57