| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| /* |
| * tdhd1.h - ALPS TDHD1-204A tuner support |
| * |
| * Copyright (C) 2008 Oliver Endriss <[email protected]> |
| * |
| * 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 */ |
