1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3     Conexant cx24123/cx24109 - DVB QPSK Satellite demod/tuner driver
4 
5     Copyright (C) 2005 Steven Toth <stoth@linuxtv.org>
6 
7 */
8 
9 #ifndef CX24123_H
10 #define CX24123_H
11 
12 #include <linux/dvb/frontend.h>
13 
14 struct cx24123_config {
15 	/* the demodulator's i2c address */
16 	u8 demod_address;
17 
18 	/* Need to set device param for start_dma */
19 	int (*set_ts_params)(struct dvb_frontend *fe, int is_punctured);
20 
21 	/* 0 = LNB voltage normal, 1 = LNB voltage inverted */
22 	int lnb_polarity;
23 
24 	/* this device has another tuner */
25 	u8 dont_use_pll;
26 	void (*agc_callback) (struct dvb_frontend *);
27 };
28 
29 #if IS_REACHABLE(CONFIG_DVB_CX24123)
30 extern struct dvb_frontend *cx24123_attach(const struct cx24123_config *config,
31 					   struct i2c_adapter *i2c);
32 extern struct i2c_adapter *cx24123_get_tuner_i2c_adapter(struct dvb_frontend *);
33 #else
34 static inline struct dvb_frontend *cx24123_attach(
35 	const struct cx24123_config *config, struct i2c_adapter *i2c)
36 {
37 	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
38 	return NULL;
39 }
40 static inline struct i2c_adapter *
41 	cx24123_get_tuner_i2c_adapter(struct dvb_frontend *fe)
42 {
43 	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
44 	return NULL;
45 }
46 #endif
47 
48 #endif /* CX24123_H */
49