1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  * Driver for
4  *    Samsung S5H1420 and
5  *    PnpNetwork PN1010 QPSK Demodulator
6  *
7  * Copyright (C) 2005 Andrew de Quincey <adq_dvb@lidskialf.net>
8  * Copyright (C) 2005-8 Patrick Boettcher <pb@linuxtv.org>
9  */
10 #ifndef S5H1420_H
11 #define S5H1420_H
12 
13 #include <linux/dvb/frontend.h>
14 
15 struct s5h1420_config
16 {
17 	/* the demodulator's i2c address */
18 	u8 demod_address;
19 
20 	/* does the inversion require inversion? */
21 	u8 invert:1;
22 
23 	u8 repeated_start_workaround:1;
24 	u8 cdclk_polarity:1; /* 1 == falling edge, 0 == raising edge */
25 
26 	u8 serial_mpeg:1;
27 };
28 
29 #if IS_REACHABLE(CONFIG_DVB_S5H1420)
30 extern struct dvb_frontend *s5h1420_attach(const struct s5h1420_config *config,
31 	     struct i2c_adapter *i2c);
32 extern struct i2c_adapter *s5h1420_get_tuner_i2c_adapter(struct dvb_frontend *fe);
33 #else
34 static inline struct dvb_frontend *s5h1420_attach(const struct s5h1420_config *config,
35 					   struct i2c_adapter *i2c)
36 {
37 	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
38 	return NULL;
39 }
40 
41 static inline struct i2c_adapter *s5h1420_get_tuner_i2c_adapter(struct dvb_frontend *fe)
42 {
43 	return NULL;
44 }
45 #endif // CONFIG_DVB_S5H1420
46 
47 #endif // S5H1420_H
48