1  /*
2     DVB Driver for Philips tda827x / tda827xa Silicon tuners
3
4     (c) 2005 Hartmut Hackmann
5     (c) 2007 Michael Krufky
6
7     This program is free software; you can redistribute it and/or modify
8     it under the terms of the GNU General Public License as published by
9     the Free Software Foundation; either version 2 of the License, or
10     (at your option) any later version.
11
12     This program is distributed in the hope that it will be useful,
13     but WITHOUT ANY WARRANTY; without even the implied warranty of
14     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15
16     GNU General Public License for more details.
17
18     You should have received a copy of the GNU General Public License
19     along with this program; if not, write to the Free Software
20     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21
22  */
23
24#ifndef __DVB_TDA827X_H__
25#define __DVB_TDA827X_H__
26
27#include <linux/i2c.h>
28#include "dvb_frontend.h"
29#include "tda8290.h"
30
31struct tda827x_config
32{
33	/* saa7134 - provided callbacks */
34	int (*init) (struct dvb_frontend *fe);
35	int (*sleep) (struct dvb_frontend *fe);
36
37	/* interface to tda829x driver */
38	enum tda8290_lna config;
39	int 	     switch_addr;
40
41	void (*agcf)(struct dvb_frontend *fe);
42};
43
44
45/**
46 * Attach a tda827x tuner to the supplied frontend structure.
47 *
48 * @param fe Frontend to attach to.
49 * @param addr i2c address of the tuner.
50 * @param i2c i2c adapter to use.
51 * @param cfg optional callback function pointers.
52 * @return FE pointer on success, NULL on failure.
53 */
54#if IS_REACHABLE(CONFIG_MEDIA_TUNER_TDA827X)
55extern struct dvb_frontend* tda827x_attach(struct dvb_frontend *fe, int addr,
56					   struct i2c_adapter *i2c,
57					   struct tda827x_config *cfg);
58#else
59static inline struct dvb_frontend* tda827x_attach(struct dvb_frontend *fe,
60						  int addr,
61						  struct i2c_adapter *i2c,
62						  struct tda827x_config *cfg)
63{
64	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
65	return NULL;
66}
67#endif // CONFIG_MEDIA_TUNER_TDA827X
68
69#endif // __DVB_TDA827X_H__
70