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, 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 */ 74