1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3 * ascot2e.h
4 *
5 * Sony Ascot3E DVB-T/T2/C/C2 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_ASCOT2E_H__
14 #define __DVB_ASCOT2E_H__
15
16 #include <linux/dvb/frontend.h>
17 #include <linux/i2c.h>
18
19 /**
20 * struct ascot2e_config - the configuration of Ascot2E 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 ascot2e_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_ASCOT2E)
35 /**
36 * ascot2e_attach - Attach an ascot2e tuner
37 *
38 * @fe: frontend to be attached
39 * @config: pointer to &struct ascot2e_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 *ascot2e_attach(struct dvb_frontend *fe,
45 const struct ascot2e_config *config,
46 struct i2c_adapter *i2c);
47 #else
ascot2e_attach(struct dvb_frontend * fe,const struct ascot2e_config * config,struct i2c_adapter * i2c)48 static inline struct dvb_frontend *ascot2e_attach(struct dvb_frontend *fe,
49 const struct ascot2e_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