1 /**
2  * Driver for Sharp IX2505V (marked B0017) DVB-S silicon tuner
3  *
4  * Copyright (C) 2010 Malcolm Priestley
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License Version 2, as
8  * published by the Free Software Foundation.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13  * GNU General Public License for more details.
14  */
15 
16 #ifndef DVB_IX2505V_H
17 #define DVB_IX2505V_H
18 
19 #include <linux/i2c.h>
20 #include <media/dvb_frontend.h>
21 
22 /**
23  * struct ix2505v_config - ix2505 attachment configuration
24  *
25  * @tuner_address: tuner address
26  * @tuner_gain: Baseband AMP gain control 0/1=0dB(default) 2=-2bB 3=-4dB
27  * @tuner_chargepump: Charge pump output +/- 0=120 1=260 2=555 3=1200(default)
28  * @min_delay_ms: delay after tune
29  * @tuner_write_only: disables reads
30  */
31 struct ix2505v_config {
32 	u8 tuner_address;
33 	u8 tuner_gain;
34 	u8 tuner_chargepump;
35 	int min_delay_ms;
36 	u8 tuner_write_only;
37 
38 };
39 
40 #if IS_REACHABLE(CONFIG_DVB_IX2505V)
41 /**
42  * Attach a ix2505v tuner to the supplied frontend structure.
43  *
44  * @fe: Frontend to attach to.
45  * @config: pointer to &struct ix2505v_config
46  * @i2c: pointer to &struct i2c_adapter.
47  *
48  * return: FE pointer on success, NULL on failure.
49  */
50 extern struct dvb_frontend *ix2505v_attach(struct dvb_frontend *fe,
51 	const struct ix2505v_config *config, struct i2c_adapter *i2c);
52 #else
53 static inline struct dvb_frontend *ix2505v_attach(struct dvb_frontend *fe,
54 	const struct ix2505v_config *config, struct i2c_adapter *i2c)
55 {
56 	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
57 	return NULL;
58 }
59 #endif
60 
61 #endif /* DVB_IX2505V_H */
62