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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 13struct dvb_frontend;14struct i2c_adapter;15 16struct 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 030 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 ensuring36 * it's passed back to a bridge during tuner_callback().37 */38 39#if IS_REACHABLE(CONFIG_MEDIA_TUNER_XC4000)40extern struct dvb_frontend *xc4000_attach(struct dvb_frontend *fe,41 struct i2c_adapter *i2c,42 struct xc4000_config *cfg);43#else44static 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#endif52 53#endif54