static int SI2168_Set_Frontend(struct dvb_frontend *fe, struct dvb_frontend_parameters *p)
{
pr_dbg("Si2168_set_frontend\n");
int lock;
int freq;
int bandwidth_Hz;
unsigned int symbol_rate_bps;
CUSTOM_Constel_Enum constellation;
CUSTOM_Stream_Enum stream;
int standard;
int polarization;
int band;
int plp_id;
int i;
struct si2168_state *state = fe->demodulator_priv;
freq=p->frequency;
unsigned char bandwidth=8;
bandwidth=p->u.ofdm.bandwidth;
if(bandwidth==0)
bandwidth=8;
else if(bandwidth==1)
bandwidth=7;
else if(bandwidth==2)
bandwidth=6;
else
bandwidth=8;
if((50000>p->frequency)||(p->frequency>900000))
{
p->frequency =474000;
pr_dbg("freq is out of range,force to set 474000khz\n");
}
// MDrv_Tuner_SetTuner(freq,8);
printk("tuner set ok\n");
standard=SILABS_DVB_T2;
bandwidth_Hz=bandwidth*1000000;
stream=0;
symbol_rate_bps=0;
constellation=0;
polarization=0;
band=0;
plp_id=0;
/* Call SiLabs_API_switch_to_standard, in case the standard is different or the init has not been done yet */
// if (SiLabs_API_switch_to_standard (&front_end, standard, 1) ==0) return 0;
MDrv_Tuner_SetTuner(freq,bandwidth);
NMI120_GetRSSI(1);
printk("now to lock carrier\n");
SiLabs_API_lock_to_carrier (&front_end, standard, freq, bandwidth_Hz, stream, symbol_rate_bps, constellation, polarization, band, plp_id);
state->freq=p->frequency; //these data will be writed to eeprom
for(i=0;i<50;i++){
SiLabs_API_Demod_status(&front_end, &custom_status);
if(1==custom_status.fec_lock){
printk("si2168 lock success\n");
break;
}
msleep(20);
}
printk("per is %d,c_n is %d,fec_lock is %d\n",custom_status.per,custom_status.c_n,custom_status.fec_lock);
pr_dbg("si2168=>frequency=%d\r\n",p->frequency);
return 0;
}
static int si2168_set_frontend(struct dvb_frontend *fe)
{
struct aml_fe *afe = fe->demodulator_priv;
struct aml_fe_dev *dev = afe->dtv_demod;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
pr_dbg("Si2168_set_frontend\n");
int lock;
int freq;
int bandwidth_Hz;
unsigned int symbol_rate_bps;
CUSTOM_Constel_Enum constellation;
CUSTOM_Stream_Enum stream;
int standard;
int polarization;
int band;
int plp_id;
int i;
freq=c->frequency;
unsigned int bandwidth=8;
bandwidth=c->bandwidth_hz/1000000;
if((bandwidth!=8)&&(bandwidth!=7)&&(bandwidth!=6))
bandwidth=8;
if((50000000>c->frequency)||(c->frequency>900000000))
{
c->frequency =474000000;
pr_dbg("freq is out of range,force to set 474000khz\n");
}
// MDrv_Tuner_SetTuner(freq,8);
printk("tuner set ok\n");
if(c->ofdm_mode==OFDM_DVBT){
standard=SILABS_DVB_T;
printk("SILABS_DVB_T\n");
}else if(c->ofdm_mode==OFDM_DVBT2){
standard=SILABS_DVB_T2;
printk("SILABS_DVB_T2\n");
}else{
standard=SILABS_DVB_T2;
printk("SILABS_DVB_T2\n");
}
bandwidth_Hz=bandwidth*1000000;
stream=0;
symbol_rate_bps=0;
constellation=0;
polarization=0;
band=0;
plp_id=0;
/* Call SiLabs_API_switch_to_standard, in case the standard is different or the init has not been done yet */
// if (SiLabs_API_switch_to_standard (&front_end, standard, 1) ==0) return 0;
SiLabs_API_Tuner_I2C_Enable(&front_end);
MDrv_Tuner_SetTuner(freq,bandwidth);
NMI120_GetRSSI(1);
SiLabs_API_Tuner_I2C_Disable(&front_end);
printk("now to lock carrier\n");
SiLabs_API_lock_to_carrier (&front_end, standard, freq, bandwidth_Hz, stream, symbol_rate_bps, constellation, polarization, band, plp_id);
afe->params = *c;//these data will be writed to eeprom
for(i=0;i<50;i++){
SiLabs_API_Demod_status(&front_end, &custom_status);
if(1==custom_status.fec_lock){
printk("si2168 lock success\n");
break;
}
msleep(20);
}
pr_dbg("per is %d,c_n is %d,fec_lock is %d\n",custom_status.per,custom_status.c_n,custom_status.fec_lock);
pr_dbg("si2168=>frequency=%d\r\n",c->frequency);
return 0;
}
