1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * Driver for Xceive XC4000 "QAM/8VSB single chip tuner" 4 * 5 * Copyright (c) 2007 Steven Toth <stoth@linuxtv.org> 6 */ 7 8 #ifndef __XC4000_H__ 9 #define __XC4000_H__ 10 11 #include <linux/firmware.h> 12 13 struct dvb_frontend; 14 struct i2c_adapter; 15 16 struct xc4000_config { 17 u8 i2c_address; 18 /* if non-zero, power management is enabled by default */ 19 u8 default_pm; 20 /* value to be written to XREG_AMPLITUDE in DVB-T mode (0: no write) */ 21 u8 dvb_amplitude; 22 /* if non-zero, register 0x0E is set to filter analog TV video output */ 23 u8 set_smoothedcvbs; 24 /* IF for DVB-T */ 25 u32 if_khz; 26 }; 27 28 /* xc4000 callback command */ 29 #define XC4000_TUNER_RESET 0 30 31 /* For each bridge framework, when it attaches either analog or digital, 32 * it has to store a reference back to its _core equivalent structure, 33 * so that it can service the hardware by steering gpio's etc. 34 * Each bridge implementation is different so cast devptr accordingly. 35 * The xc4000 driver cares not for this value, other than ensuring 36 * it's passed back to a bridge during tuner_callback(). 37 */ 38 39 #if IS_REACHABLE(CONFIG_MEDIA_TUNER_XC4000) 40 extern struct dvb_frontend *xc4000_attach(struct dvb_frontend *fe, 41 struct i2c_adapter *i2c, 42 struct xc4000_config *cfg); 43 #else 44 static inline struct dvb_frontend *xc4000_attach(struct dvb_frontend *fe, 45 struct i2c_adapter *i2c, 46 struct xc4000_config *cfg) 47 { 48 printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); 49 return NULL; 50 } 51 #endif 52 53 #endif 54