/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* bsbe1 . h - ALPS BSBE1 tuner support
*
* the project ' s page is at https : //linuxtv.org
*/
#ifndef BSBE1_H
#define BSBE1_H
static u8 alps_bsbe1_inittab[] = {
0 x01, 0 x15, /* XTAL = 4MHz, VCO = 352 MHz */
0 x02, 0 x30, /* MCLK = 88 MHz */
0 x03, 0 x00, /* ACR output 0 */
0 x04, 0 x7d, /* F22FR = 0x7d, F22 = f_VCO / 128 / 0x7d = 22 kHz */
0 x05, 0 x05, /* I2CT = 0, SCLT = 1, SDAT = 1 */
0 x06, 0 x00, /* DAC output 0 */
0 x08, 0 x40, /* DiSEqC off, LNB power on OP2/LOCK pin on */
0 x09, 0 x00, /* FIFO */
0 x0c, 0 x51, /* OP1/OP0 normal, val = 1 (LNB power on) */
0 x0d, 0 x82, /* DC offset compensation = on, beta_agc1 = 2 */
0 x0f, 0 x92, /* AGC1R */
0 x10, 0 x34, /* AGC2O */
0 x11, 0 x84, /* TLSR */
0 x12, 0 xb9, /* CFD */
0 x15, 0 xc9, /* lock detector threshold */
0 x28, 0 x00, /* out imp: normal, type: parallel, FEC mode: QPSK */
0 x33, 0 xfc, /* RS control */
0 x34, 0 x93, /* count viterbi bit errors per 2E18 bytes */
0 xff, 0 xff
};
static int alps_bsbe1_set_symbol_rate(struct dvb_frontend* fe, u32 srate, u32 ratio)
{
u8 aclk = 0 ;
u8 bclk = 0 ;
if (srate < 1500000 ) { aclk = 0 xb7; bclk = 0 x47; }
else if (srate < 3000000 ) { aclk = 0 xb7; bclk = 0 x4b; }
else if (srate < 7000000 ) { aclk = 0 xb7; bclk = 0 x4f; }
else if (srate < 14000000 ) { aclk = 0 xb7; bclk = 0 x53; }
else if (srate < 30000000 ) { aclk = 0 xb6; bclk = 0 x53; }
else if (srate < 45000000 ) { aclk = 0 xb4; bclk = 0 x51; }
stv0299_writereg(fe, 0 x13, aclk);
stv0299_writereg(fe, 0 x14, bclk);
stv0299_writereg(fe, 0 x1f, (ratio >> 16 ) & 0 xff);
stv0299_writereg(fe, 0 x20, (ratio >> 8 ) & 0 xff);
stv0299_writereg(fe, 0 x21, (ratio ) & 0 xf0);
return 0 ;
}
static int alps_bsbe1_tuner_set_params(struct dvb_frontend *fe)
{
struct dtv_frontend_properties *p = &fe->dtv_property_cache;
int ret;
u8 data[4 ];
u32 div;
struct i2c_msg msg = { .addr = 0 x61, .flags = 0 , .buf = data, .len = sizeof (data) };
struct i2c_adapter *i2c = fe->tuner_priv;
if ((p->frequency < 950000 ) || (p->frequency > 2150000 ))
return -EINVAL;
div = p->frequency / 1000 ;
data[0 ] = (div >> 8 ) & 0 x7f;
data[1 ] = div & 0 xff;
data[2 ] = 0 x80 | ((div & 0 x18000) >> 10 ) | 0 x1;
data[3 ] = 0 xe0;
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1 );
ret = i2c_transfer(i2c, &msg, 1 );
return (ret != 1 ) ? -EIO : 0 ;
}
static struct stv0299_config alps_bsbe1_config = {
.demod_address = 0 x68,
.inittab = alps_bsbe1_inittab,
.mclk = 88000000 UL,
.invert = 1 ,
.skip_reinit = 0 ,
.min_delay_ms = 100 ,
.set_symbol_rate = alps_bsbe1_set_symbol_rate,
};
#endif
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(vorverarbeitet am 2026-09-29)
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