/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * tdhd1.h - ALPS TDHD1-204A tuner support
 *
 * Copyright (C) 2008 Oliver Endriss <o.endriss@gmx.de>
 *
 * The project's page is at https://linuxtv.org
 */

#ifndef TDHD1_H
#define TDHD1_H

#include "tda1004x.h"

static int alps_tdhd1_204_request_firmware(struct dvb_frontend *fe, const struct firmware **fw, char *name);

static struct tda1004x_config alps_tdhd1_204a_config = {
        .demod_address = 0x8,
        .invert = 1,
        .invert_oclk = 0,
        .xtal_freq = TDA10046_XTAL_4M,
        .agc_config = TDA10046_AGC_DEFAULT,
        .if_freq = TDA10046_FREQ_3617,
        .request_firmware = alps_tdhd1_204_request_firmware
};

static int alps_tdhd1_204a_tuner_set_params(struct dvb_frontend *fe)
{
        struct dtv_frontend_properties *p = &fe->dtv_property_cache;
        struct i2c_adapter *i2c = fe->tuner_priv;
        u8 data[4];
        struct i2c_msg msg = { .addr = 0x61, .flags = 0, .buf = data, .len = sizeof(data) };
        u32 div;

        div = (p->frequency + 36166666) / 166666;

        data[0] = (div >> 8) & 0x7f;
        data[1] = div & 0xff;
        data[2] = 0x85;

        if (p->frequency >= 174000000 && p->frequency <= 230000000)
                data[3] = 0x02;
        else if (p->frequency >= 470000000 && p->frequency <= 823000000)
                data[3] = 0x0C;
        else if (p->frequency > 823000000 && p->frequency <= 862000000)
                data[3] = 0x8C;
        else
                return -EINVAL;

        if (fe->ops.i2c_gate_ctrl)
                fe->ops.i2c_gate_ctrl(fe, 1);
        if (i2c_transfer(i2c, &msg, 1) != 1)
                return -EIO;

        return 0;
}

#endif /* TDHD1_H */