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
ix2505v_attach(struct dvb_frontend * fe,const struct ix2505v_config * config,struct i2c_adapter * i2c)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