1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * tdhd1.h - ALPS TDHD1-204A tuner support
5 * Copyright (C) 2008 Oliver Endriss <o.endriss@gmx.de>
7 * The project's page is at https://linuxtv.org
15 static int alps_tdhd1_204_request_firmware(struct dvb_frontend *fe, const struct firmware **fw, char *name);
17 static struct tda1004x_config alps_tdhd1_204a_config = {
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_firmware
27 static int alps_tdhd1_204a_tuner_set_params(struct dvb_frontend *fe)
29 struct dtv_frontend_properties *p = &fe->dtv_property_cache;
30 struct i2c_adapter *i2c = fe->tuner_priv;
32 struct i2c_msg msg = { .addr = 0x61, .flags = 0, .buf = data, .len = sizeof(data) };
35 div = (p->frequency + 36166666) / 166666;
37 data[0] = (div >> 8) & 0x7f;
41 if (p->frequency >= 174000000 && p->frequency <= 230000000)
43 else if (p->frequency >= 470000000 && p->frequency <= 823000000)
45 else if (p->frequency > 823000000 && p->frequency <= 862000000)
50 if (fe->ops.i2c_gate_ctrl)
51 fe->ops.i2c_gate_ctrl(fe, 1);
52 if (i2c_transfer(i2c, &msg, 1) != 1)