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1/* SPDX-License-Identifier: GPL-2.0-or-later */2/*3 * tdhd1.h - ALPS TDHD1-204A tuner support4 *5 * Copyright (C) 2008 Oliver Endriss <o.endriss@gmx.de>6 *7 * The project's page is at https://linuxtv.org8 */9 10#ifndef TDHD1_H11#define TDHD1_H12 13#include "tda1004x.h"14 15static int alps_tdhd1_204_request_firmware(struct dvb_frontend *fe, const struct firmware **fw, char *name);16 17static struct tda1004x_config alps_tdhd1_204a_config = {18 .demod_address = 0x8,19 .invert = 1,20 .invert_oclk = 0,21 .xtal_freq = TDA10046_XTAL_4M,22 .agc_config = TDA10046_AGC_DEFAULT,23 .if_freq = TDA10046_FREQ_3617,24 .request_firmware = alps_tdhd1_204_request_firmware25};26 27static int alps_tdhd1_204a_tuner_set_params(struct dvb_frontend *fe)28{29 struct dtv_frontend_properties *p = &fe->dtv_property_cache;30 struct i2c_adapter *i2c = fe->tuner_priv;31 u8 data[4];32 struct i2c_msg msg = { .addr = 0x61, .flags = 0, .buf = data, .len = sizeof(data) };33 u32 div;34 35 div = (p->frequency + 36166666) / 166666;36 37 data[0] = (div >> 8) & 0x7f;38 data[1] = div & 0xff;39 data[2] = 0x85;40 41 if (p->frequency >= 174000000 && p->frequency <= 230000000)42 data[3] = 0x02;43 else if (p->frequency >= 470000000 && p->frequency <= 823000000)44 data[3] = 0x0C;45 else if (p->frequency > 823000000 && p->frequency <= 862000000)46 data[3] = 0x8C;47 else48 return -EINVAL;49 50 if (fe->ops.i2c_gate_ctrl)51 fe->ops.i2c_gate_ctrl(fe, 1);52 if (i2c_transfer(i2c, &msg, 1) != 1)53 return -EIO;54 55 return 0;56}57 58#endif /* TDHD1_H */59