1/*
2 *  Driver for Zarlink DVB-T MT352 demodulator
3 *
4 *  Written by Holger Waechtler <holger@qanu.de>
5 *	 and Daniel Mack <daniel@qanu.de>
6 *
7 *  AVerMedia AVerTV DVB-T 771 support by
8 *       Wolfram Joost <dbox2@frokaschwei.de>
9 *
10 *  Support for Samsung TDTC9251DH01C(M) tuner
11 *  Copyright (C) 2004 Antonio Mancuso <antonio.mancuso@digitaltelevision.it>
12 *                     Amauri  Celani  <acelani@essegi.net>
13 *
14 *  DVICO FusionHDTV DVB-T1 and DVICO FusionHDTV DVB-T Lite support by
15 *       Christopher Pascoe <c.pascoe@itee.uq.edu.au>
16 *
17 *  This program is free software; you can redistribute it and/or modify
18 *  it under the terms of the GNU General Public License as published by
19 *  the Free Software Foundation; either version 2 of the License, or
20 *  (at your option) any later version.
21 *
22 *  This program is distributed in the hope that it will be useful,
23 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
24 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
25 *
26 *  GNU General Public License for more details.
27 *
28 *  You should have received a copy of the GNU General Public License
29 *  along with this program; if not, write to the Free Software
30 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.=
31 */
32
33#ifndef MT352_H
34#define MT352_H
35
36#include <linux/dvb/frontend.h>
37
38struct mt352_config
39{
40	/* the demodulator's i2c address */
41	u8 demod_address;
42
43	/* frequencies in kHz */
44	int adc_clock;  // default: 20480
45	int if2;        // default: 36166
46
47	/* set if no pll is connected to the secondary i2c bus */
48	int no_tuner;
49
50	/* Initialise the demodulator and PLL. Cannot be NULL */
51	int (*demod_init)(struct dvb_frontend* fe);
52};
53
54#if IS_ENABLED(CONFIG_DVB_MT352)
55extern struct dvb_frontend* mt352_attach(const struct mt352_config* config,
56					 struct i2c_adapter* i2c);
57#else
58static inline struct dvb_frontend* mt352_attach(const struct mt352_config* config,
59					 struct i2c_adapter* i2c)
60{
61	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
62	return NULL;
63}
64#endif // CONFIG_DVB_MT352
65
66static inline int mt352_write(struct dvb_frontend *fe, const u8 buf[], int len) {
67	int r = 0;
68	if (fe->ops.write)
69		r = fe->ops.write(fe, buf, len);
70	return r;
71}
72
73#endif // MT352_H
74