mt312.h

 1/* SPDX-License-Identifier: GPL-2.0-or-later */
 2/*
 3    Driver for Zarlink MT312 Satellite Channel Decoder
 4
 5    Copyright (C) 2003 Andreas Oberritter <obi@linuxtv.org>
 6
 7
 8    References:
 9    http://products.zarlink.com/product_profiles/MT312.htm
10    http://products.zarlink.com/product_profiles/SL1935.htm
11*/
12
13#ifndef MT312_H
14#define MT312_H
15
16#include <linux/dvb/frontend.h>
17
18struct mt312_config {
19	/* the demodulator's i2c address */
20	u8 demod_address;
21
22	/* inverted voltage setting */
23	unsigned int voltage_inverted:1;
24};
25
26#if IS_REACHABLE(CONFIG_DVB_MT312)
27struct dvb_frontend *mt312_attach(const struct mt312_config *config,
28					struct i2c_adapter *i2c);
29#else
30static inline struct dvb_frontend *mt312_attach(
31	const struct mt312_config *config, struct i2c_adapter *i2c)
32{
33	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
34	return NULL;
35}
36#endif /* CONFIG_DVB_MT312 */
37
38#endif /* MT312_H */