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
38 struct 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 defined(CONFIG_DVB_MT352) || (defined(CONFIG_DVB_MT352_MODULE) && defined(MODULE))
55 extern struct dvb_frontend* mt352_attach(const struct mt352_config* config,
56 struct i2c_adapter* i2c);
57 #else
58 static 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
66 static inline int mt352_write(struct dvb_frontend *fe, 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
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