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Oliver Endriss81ae9532008-09-03 18:16:09 -03001/*
2 * tdhd1.h - ALPS TDHD1-204A tuner support
3 *
4 * Copyright (C) 2008 Oliver Endriss <o.endriss@gmx.de>
5 *
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (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 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 * Or, point your browser to http://www.gnu.org/copyleft/gpl.html
21 *
22 *
23 * The project's page is at http://www.linuxtv.org
24 */
25
26#ifndef TDHD1_H
27#define TDHD1_H
28
29#include "tda1004x.h"
30
31static struct tda1004x_config alps_tdhd1_204a_config = {
32 .demod_address = 0x8,
33 .invert = 1,
34 .invert_oclk = 0,
35 .xtal_freq = TDA10046_XTAL_4M,
36 .agc_config = TDA10046_AGC_DEFAULT,
37 .if_freq = TDA10046_FREQ_3617,
38};
39
40static int alps_tdhd1_204a_tuner_set_params(struct dvb_frontend *fe, struct dvb_frontend_parameters *params)
41{
42 struct i2c_adapter *i2c = fe->tuner_priv;
43 u8 data[4];
44 struct i2c_msg msg = { .addr = 0x61, .flags = 0, .buf = data, .len = sizeof(data) };
45 u32 div;
46
47 div = (params->frequency + 36166666) / 166666;
48
49 data[0] = (div >> 8) & 0x7f;
50 data[1] = div & 0xff;
51 data[2] = 0x85;
52
53 if (params->frequency >= 174000000 && params->frequency <= 230000000)
54 data[3] = 0x02;
55 else if (params->frequency >= 470000000 && params->frequency <= 823000000)
56 data[3] = 0x0C;
57 else if (params->frequency > 823000000 && params->frequency <= 862000000)
58 data[3] = 0x8C;
59 else
60 return -EINVAL;
61
62 if (fe->ops.i2c_gate_ctrl)
63 fe->ops.i2c_gate_ctrl(fe, 1);
64 if (i2c_transfer(i2c, &msg, 1) != 1)
65 return -EIO;
66
67 return 0;
68}
69
70#endif /* TDHD1_H */