59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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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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* The project's page is at https://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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