xref: /linux/drivers/media/tuners/r820t.h (revision 58e16d792a6a8c6b750f637a4649967fcac853dc)
1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  * Elonics R820T silicon tuner driver
4  *
5  * Copyright (C) 2012 Antti Palosaari <crope@iki.fi>
6  */
7 
8 #ifndef R820T_H
9 #define R820T_H
10 
11 #include <media/dvb_frontend.h>
12 
13 enum r820t_chip {
14 	CHIP_R820T,
15 	CHIP_R620D,
16 	CHIP_R828D,
17 	CHIP_R828,
18 	CHIP_R828S,
19 	CHIP_R820C,
20 };
21 
22 struct r820t_config {
23 	u8 i2c_addr;		/* 0x34 */
24 	u32 xtal;
25 	enum r820t_chip rafael_chip;
26 	unsigned max_i2c_msg_len;
27 	bool use_diplexer;
28 	bool use_predetect;
29 };
30 
31 #if IS_REACHABLE(CONFIG_MEDIA_TUNER_R820T)
32 struct dvb_frontend *r820t_attach(struct dvb_frontend *fe,
33 				  struct i2c_adapter *i2c,
34 				  const struct r820t_config *cfg);
35 #else
r820t_attach(struct dvb_frontend * fe,struct i2c_adapter * i2c,const struct r820t_config * cfg)36 static inline struct dvb_frontend *r820t_attach(struct dvb_frontend *fe,
37 						struct i2c_adapter *i2c,
38 						const struct r820t_config *cfg)
39 {
40 	pr_warn("%s: driver disabled by Kconfig\n", __func__);
41 	return NULL;
42 }
43 #endif
44 
45 #endif
46