75 строки
2.2 KiB
C
75 строки
2.2 KiB
C
/*
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* tdhd1.h - ALPS TDHD1-204A tuner support
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*
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* Copyright (C) 2008 Oliver Endriss <o.endriss@gmx.de>
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*
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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* Or, point your browser to http://www.gnu.org/copyleft/gpl.html
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*
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*
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* The project's page is at http://www.linuxtv.org
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*/
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#ifndef TDHD1_H
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#define TDHD1_H
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#include "tda1004x.h"
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static int alps_tdhd1_204_request_firmware(struct dvb_frontend *fe, const struct firmware **fw, char *name);
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static struct tda1004x_config alps_tdhd1_204a_config = {
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.demod_address = 0x8,
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.invert = 1,
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.invert_oclk = 0,
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.xtal_freq = TDA10046_XTAL_4M,
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.agc_config = TDA10046_AGC_DEFAULT,
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.if_freq = TDA10046_FREQ_3617,
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.request_firmware = alps_tdhd1_204_request_firmware
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};
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static int alps_tdhd1_204a_tuner_set_params(struct dvb_frontend *fe)
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{
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struct dtv_frontend_properties *p = &fe->dtv_property_cache;
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struct i2c_adapter *i2c = fe->tuner_priv;
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u8 data[4];
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struct i2c_msg msg = { .addr = 0x61, .flags = 0, .buf = data, .len = sizeof(data) };
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u32 div;
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div = (p->frequency + 36166666) / 166666;
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data[0] = (div >> 8) & 0x7f;
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data[1] = div & 0xff;
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data[2] = 0x85;
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if (p->frequency >= 174000000 && p->frequency <= 230000000)
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data[3] = 0x02;
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else if (p->frequency >= 470000000 && p->frequency <= 823000000)
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data[3] = 0x0C;
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else if (p->frequency > 823000000 && p->frequency <= 862000000)
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data[3] = 0x8C;
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else
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return -EINVAL;
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if (fe->ops.i2c_gate_ctrl)
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fe->ops.i2c_gate_ctrl(fe, 1);
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if (i2c_transfer(i2c, &msg, 1) != 1)
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return -EIO;
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return 0;
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}
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#endif /* TDHD1_H */
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