1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  * horus3a.h
4  *
5  * Sony Horus3A DVB-S/S2 tuner driver
6  *
7  * Copyright 2012 Sony Corporation
8  * Copyright (C) 2014 NetUP Inc.
9  * Copyright (C) 2014 Sergey Kozlov <serjk@netup.ru>
10  * Copyright (C) 2014 Abylay Ospan <aospan@netup.ru>
11   */
12 
13 #ifndef __DVB_HORUS3A_H__
14 #define __DVB_HORUS3A_H__
15 
16 #include <linux/dvb/frontend.h>
17 #include <linux/i2c.h>
18 
19 /**
20  * struct horus3a_config - the configuration of Horus3A tuner driver
21  * @i2c_address:    I2C address of the tuner
22  * @xtal_freq_mhz:  Oscillator frequency, MHz
23  * @set_tuner_priv: Callback function private context
24  * @set_tuner_callback: Callback function that notifies the parent driver
25  *          which tuner is active now
26  */
27 struct horus3a_config {
28 	u8	i2c_address;
29 	u8	xtal_freq_mhz;
30 	void	*set_tuner_priv;
31 	int	(*set_tuner_callback)(void *, int);
32 };
33 
34 #if IS_REACHABLE(CONFIG_DVB_HORUS3A)
35 /**
36  * horus3a_attach - Attach a horus3a tuner
37  *
38  * @fe: frontend to be attached
39  * @config: pointer to &struct helene_config with tuner configuration.
40  * @i2c: i2c adapter to use.
41  *
42  * return: FE pointer on success, NULL on failure.
43  */
44 extern struct dvb_frontend *horus3a_attach(struct dvb_frontend *fe,
45 					const struct horus3a_config *config,
46 					struct i2c_adapter *i2c);
47 #else
48 static inline struct dvb_frontend *horus3a_attach(struct dvb_frontend *fe,
49 					const struct horus3a_config *config,
50 					struct i2c_adapter *i2c)
51 {
52 	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
53 	return NULL;
54 }
55 #endif
56 
57 #endif
58