54 lines
1.5 KiB
C
54 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Driver for Xceive XC4000 "QAM/8VSB single chip tuner"
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*
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* Copyright (c) 2007 Steven Toth <stoth@linuxtv.org>
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*/
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#ifndef __XC4000_H__
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#define __XC4000_H__
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#include <linux/firmware.h>
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struct dvb_frontend;
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struct i2c_adapter;
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struct xc4000_config {
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u8 i2c_address;
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/* if non-zero, power management is enabled by default */
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u8 default_pm;
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/* value to be written to XREG_AMPLITUDE in DVB-T mode (0: no write) */
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u8 dvb_amplitude;
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/* if non-zero, register 0x0E is set to filter analog TV video output */
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u8 set_smoothedcvbs;
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/* IF for DVB-T */
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u32 if_khz;
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};
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/* xc4000 callback command */
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#define XC4000_TUNER_RESET 0
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/* For each bridge framework, when it attaches either analog or digital,
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* it has to store a reference back to its _core equivalent structure,
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* so that it can service the hardware by steering gpio's etc.
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* Each bridge implementation is different so cast devptr accordingly.
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* The xc4000 driver cares not for this value, other than ensuring
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* it's passed back to a bridge during tuner_callback().
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*/
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#if IS_REACHABLE(CONFIG_MEDIA_TUNER_XC4000)
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extern struct dvb_frontend *xc4000_attach(struct dvb_frontend *fe,
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struct i2c_adapter *i2c,
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struct xc4000_config *cfg);
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#else
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static inline struct dvb_frontend *xc4000_attach(struct dvb_frontend *fe,
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struct i2c_adapter *i2c,
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struct xc4000_config *cfg)
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{
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printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
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return NULL;
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}
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#endif
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#endif
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