1 /* 2 * Driver for Xceive XC4000 "QAM/8VSB single chip tuner" 3 * 4 * Copyright (c) 2007 Steven Toth <stoth@linuxtv.org> 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 * 15 * GNU General Public License for more details. 16 */ 17 18 #ifndef __XC4000_H__ 19 #define __XC4000_H__ 20 21 #include <linux/firmware.h> 22 23 struct dvb_frontend; 24 struct i2c_adapter; 25 26 struct xc4000_config { 27 u8 i2c_address; 28 /* if non-zero, power management is enabled by default */ 29 u8 default_pm; 30 /* value to be written to XREG_AMPLITUDE in DVB-T mode (0: no write) */ 31 u8 dvb_amplitude; 32 /* if non-zero, register 0x0E is set to filter analog TV video output */ 33 u8 set_smoothedcvbs; 34 /* IF for DVB-T */ 35 u32 if_khz; 36 }; 37 38 /* xc4000 callback command */ 39 #define XC4000_TUNER_RESET 0 40 41 /* For each bridge framework, when it attaches either analog or digital, 42 * it has to store a reference back to its _core equivalent structure, 43 * so that it can service the hardware by steering gpio's etc. 44 * Each bridge implementation is different so cast devptr accordingly. 45 * The xc4000 driver cares not for this value, other than ensuring 46 * it's passed back to a bridge during tuner_callback(). 47 */ 48 49 #if IS_REACHABLE(CONFIG_MEDIA_TUNER_XC4000) 50 extern struct dvb_frontend *xc4000_attach(struct dvb_frontend *fe, 51 struct i2c_adapter *i2c, 52 struct xc4000_config *cfg); 53 #else 54 static inline struct dvb_frontend *xc4000_attach(struct dvb_frontend *fe, 55 struct i2c_adapter *i2c, 56 struct xc4000_config *cfg) 57 { 58 printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); 59 return NULL; 60 } 61 #endif 62 63 #endif 64