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 
18 struct 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)
27 struct dvb_frontend *mt312_attach(const struct mt312_config *config,
28 					struct i2c_adapter *i2c);
29 #else
mt312_attach(const struct mt312_config * config,struct i2c_adapter * i2c)30 static 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 */
39