1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Driver for Sharp IX2505V (marked B0017) DVB-S silicon tuner
4  *
5  * Copyright (C) 2010 Malcolm Priestley
6  */
7 
8 #ifndef DVB_IX2505V_H
9 #define DVB_IX2505V_H
10 
11 #include <linux/i2c.h>
12 #include <media/dvb_frontend.h>
13 
14 /**
15  * struct ix2505v_config - ix2505 attachment configuration
16  *
17  * @tuner_address: tuner address
18  * @tuner_gain: Baseband AMP gain control 0/1=0dB(default) 2=-2bB 3=-4dB
19  * @tuner_chargepump: Charge pump output +/- 0=120 1=260 2=555 3=1200(default)
20  * @min_delay_ms: delay after tune
21  * @tuner_write_only: disables reads
22  */
23 struct ix2505v_config {
24 	u8 tuner_address;
25 	u8 tuner_gain;
26 	u8 tuner_chargepump;
27 	int min_delay_ms;
28 	u8 tuner_write_only;
29 
30 };
31 
32 #if IS_REACHABLE(CONFIG_DVB_IX2505V)
33 /**
34  * ix2505v_attach - Attach a ix2505v tuner to the supplied frontend structure.
35  *
36  * @fe: Frontend to attach to.
37  * @config: pointer to &struct ix2505v_config
38  * @i2c: pointer to &struct i2c_adapter.
39  *
40  * return: FE pointer on success, NULL on failure.
41  */
42 extern struct dvb_frontend *ix2505v_attach(struct dvb_frontend *fe,
43 	const struct ix2505v_config *config, struct i2c_adapter *i2c);
44 #else
45 static inline struct dvb_frontend *ix2505v_attach(struct dvb_frontend *fe,
46 	const struct ix2505v_config *config, struct i2c_adapter *i2c)
47 {
48 	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
49 	return NULL;
50 }
51 #endif
52 
53 #endif /* DVB_IX2505V_H */
54