/* 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 */