1/*
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 int alps_tdhd1_204_request_firmware(struct dvb_frontend *fe, const struct firmware **fw, char *name);
32
33static struct tda1004x_config alps_tdhd1_204a_config = {
34	.demod_address = 0x8,
35	.invert = 1,
36	.invert_oclk = 0,
37	.xtal_freq = TDA10046_XTAL_4M,
38	.agc_config = TDA10046_AGC_DEFAULT,
39	.if_freq = TDA10046_FREQ_3617,
40	.request_firmware = alps_tdhd1_204_request_firmware
41};
42
43static int alps_tdhd1_204a_tuner_set_params(struct dvb_frontend *fe)
44{
45	struct dtv_frontend_properties *p = &fe->dtv_property_cache;
46	struct i2c_adapter *i2c = fe->tuner_priv;
47	u8 data[4];
48	struct i2c_msg msg = { .addr = 0x61, .flags = 0, .buf = data, .len = sizeof(data) };
49	u32 div;
50
51	div = (p->frequency + 36166666) / 166666;
52
53	data[0] = (div >> 8) & 0x7f;
54	data[1] = div & 0xff;
55	data[2] = 0x85;
56
57	if (p->frequency >= 174000000 && p->frequency <= 230000000)
58		data[3] = 0x02;
59	else if (p->frequency >= 470000000 && p->frequency <= 823000000)
60		data[3] = 0x0C;
61	else if (p->frequency > 823000000 && p->frequency <= 862000000)
62		data[3] = 0x8C;
63	else
64		return -EINVAL;
65
66	if (fe->ops.i2c_gate_ctrl)
67		fe->ops.i2c_gate_ctrl(fe, 1);
68	if (i2c_transfer(i2c, &msg, 1) != 1)
69		return -EIO;
70
71	return 0;
72}
73
74#endif /* TDHD1_H */
75