diff options
Diffstat (limited to 'drivers/media/dvb/frontends/tdhd1.h')
-rw-r--r-- | drivers/media/dvb/frontends/tdhd1.h | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/drivers/media/dvb/frontends/tdhd1.h b/drivers/media/dvb/frontends/tdhd1.h new file mode 100644 index 000000000000..51f170678650 --- /dev/null +++ b/drivers/media/dvb/frontends/tdhd1.h | |||
@@ -0,0 +1,73 @@ | |||
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 | |||
31 | static int alps_tdhd1_204_request_firmware(struct dvb_frontend *fe, const struct firmware **fw, char *name); | ||
32 | |||
33 | static 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 | |||
43 | static int alps_tdhd1_204a_tuner_set_params(struct dvb_frontend *fe, struct dvb_frontend_parameters *params) | ||
44 | { | ||
45 | struct i2c_adapter *i2c = fe->tuner_priv; | ||
46 | u8 data[4]; | ||
47 | struct i2c_msg msg = { .addr = 0x61, .flags = 0, .buf = data, .len = sizeof(data) }; | ||
48 | u32 div; | ||
49 | |||
50 | div = (params->frequency + 36166666) / 166666; | ||
51 | |||
52 | data[0] = (div >> 8) & 0x7f; | ||
53 | data[1] = div & 0xff; | ||
54 | data[2] = 0x85; | ||
55 | |||
56 | if (params->frequency >= 174000000 && params->frequency <= 230000000) | ||
57 | data[3] = 0x02; | ||
58 | else if (params->frequency >= 470000000 && params->frequency <= 823000000) | ||
59 | data[3] = 0x0C; | ||
60 | else if (params->frequency > 823000000 && params->frequency <= 862000000) | ||
61 | data[3] = 0x8C; | ||
62 | else | ||
63 | return -EINVAL; | ||
64 | |||
65 | if (fe->ops.i2c_gate_ctrl) | ||
66 | fe->ops.i2c_gate_ctrl(fe, 1); | ||
67 | if (i2c_transfer(i2c, &msg, 1) != 1) | ||
68 | return -EIO; | ||
69 | |||
70 | return 0; | ||
71 | } | ||
72 | |||
73 | #endif /* TDHD1_H */ | ||