1/* SPDX-License-Identifier: GPL-2.0-or-later */
2  /*
3     DVB Driver for Philips tda827x / tda827xa Silicon tuners
4
5     (c) 2005 Hartmut Hackmann
6     (c) 2007 Michael Krufky
7
8
9  */
10
11#ifndef __DVB_TDA827X_H__
12#define __DVB_TDA827X_H__
13
14#include <linux/i2c.h>
15#include <media/dvb_frontend.h>
16#include "tda8290.h"
17
18struct tda827x_config
19{
20	/* saa7134 - provided callbacks */
21	int (*init) (struct dvb_frontend *fe);
22	int (*sleep) (struct dvb_frontend *fe);
23
24	/* interface to tda829x driver */
25	enum tda8290_lna config;
26	int	     switch_addr;
27
28	void (*agcf)(struct dvb_frontend *fe);
29};
30
31
32/**
33 * tda827x_attach() - Attach a tda827x tuner to the supplied frontend structure
34 *
35 * @fe: Frontend to attach to.
36 * @addr: i2c address of the tuner.
37 * @i2c: i2c adapter to use.
38 * @cfg: optional callback function pointers.
39 * @return FE pointer on success, NULL on failure.
40 */
41#if IS_REACHABLE(CONFIG_MEDIA_TUNER_TDA827X)
42extern struct dvb_frontend* tda827x_attach(struct dvb_frontend *fe, int addr,
43					   struct i2c_adapter *i2c,
44					   struct tda827x_config *cfg);
45#else
46static inline struct dvb_frontend* tda827x_attach(struct dvb_frontend *fe,
47						  int addr,
48						  struct i2c_adapter *i2c,
49						  struct tda827x_config *cfg)
50{
51	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
52	return NULL;
53}
54#endif // CONFIG_MEDIA_TUNER_TDA827X
55
56#endif // __DVB_TDA827X_H__
57