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 * To obtain the license, point your browser to 17 * http://www.gnu.org/copyleft/gpl.html 18 * 19 * 20 * The project's page is at https://linuxtv.org 21 */ 22 23 #ifndef TDHD1_H 24 #define TDHD1_H 25 26 #include "tda1004x.h" 27 28 static int alps_tdhd1_204_request_firmware(struct dvb_frontend *fe, const struct firmware **fw, char *name); 29 30 static struct tda1004x_config alps_tdhd1_204a_config = { 31 .demod_address = 0x8, 32 .invert = 1, 33 .invert_oclk = 0, 34 .xtal_freq = TDA10046_XTAL_4M, 35 .agc_config = TDA10046_AGC_DEFAULT, 36 .if_freq = TDA10046_FREQ_3617, 37 .request_firmware = alps_tdhd1_204_request_firmware 38 }; 39 40 static int alps_tdhd1_204a_tuner_set_params(struct dvb_frontend *fe) 41 { 42 struct dtv_frontend_properties *p = &fe->dtv_property_cache; 43 struct i2c_adapter *i2c = fe->tuner_priv; 44 u8 data[4]; 45 struct i2c_msg msg = { .addr = 0x61, .flags = 0, .buf = data, .len = sizeof(data) }; 46 u32 div; 47 48 div = (p->frequency + 36166666) / 166666; 49 50 data[0] = (div >> 8) & 0x7f; 51 data[1] = div & 0xff; 52 data[2] = 0x85; 53 54 if (p->frequency >= 174000000 && p->frequency <= 230000000) 55 data[3] = 0x02; 56 else if (p->frequency >= 470000000 && p->frequency <= 823000000) 57 data[3] = 0x0C; 58 else if (p->frequency > 823000000 && p->frequency <= 862000000) 59 data[3] = 0x8C; 60 else 61 return -EINVAL; 62 63 if (fe->ops.i2c_gate_ctrl) 64 fe->ops.i2c_gate_ctrl(fe, 1); 65 if (i2c_transfer(i2c, &msg, 1) != 1) 66 return -EIO; 67 68 return 0; 69 } 70 71 #endif /* TDHD1_H */ 72