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#include "af903x.h"
#include "dvb_frontend.h"
struct af903xm_state {
struct dvb_frontend demod;
fe_bandwidth_t current_bandwidth;
};
static int af903x_init(struct dvb_frontend *demod)
{
DWORD error = Error_NO_ERROR;
deb_data("- Enter %s Function - chip=%d\n",__FUNCTION__, demod->dvb->num);
error = DL_ApCtrl(demod->dvb->num,1 );
if(error){
deb_data("af903x_init return error\n");
return error;
}
return 0;
}
static int af903x_sleep(struct dvb_frontend *demod)
{
DWORD error = Error_NO_ERROR;;
deb_data("- Enter %s Function - chip=%d\n",__FUNCTION__, demod->dvb->num);
DeviceReboot = false;
error = DL_ApCtrl(demod->dvb->num, 0);
if (error){
deb_data("af903x_sleep return error\n");
return error;
}
return 0;
}
static int af903x_identify(struct af903xm_state *state)
{
return 0;
}
static int af903x_get_frontend(struct dvb_frontend* fe,
struct dvb_frontend_parameters *fep)
{
struct af903xm_state *state = fe->demodulator_priv;
deb_data("- Enter %s Function - chip=%d\n",__FUNCTION__, fe->dvb->num);
fep->inversion = INVERSION_AUTO;
fep->u.ofdm.bandwidth = state->current_bandwidth;
return 0;
}
static int af903x_set_frontend(struct dvb_frontend* fe,
struct dvb_frontend_parameters *fep)
{
struct af903xm_state *state = fe->demodulator_priv;
struct af903x_ofdm_channel ch;
DWORD error = Error_NO_ERROR;
deb_data("- Enter %s Function - chip=%d\n",__FUNCTION__, fe->dvb->num);
if (fep->u.ofdm.bandwidth == 0) fep->u.ofdm.bandwidth=8;
if (fep->u.ofdm.bandwidth == 1) fep->u.ofdm.bandwidth=7;
if (fep->u.ofdm.bandwidth == 2) fep->u.ofdm.bandwidth=6;
ch.RF_kHz = fep->frequency / 1000;
ch.Bw = fep->u.ofdm.bandwidth;
state->current_bandwidth = fep->u.ofdm.bandwidth;
deb_data("- Enter %s Function - chip=%d RF=%d, BW=%d\n",__FUNCTION__, fe->dvb->num,ch.RF_kHz,ch.Bw);
if (ch.RF_kHz<177000 || ch.RF_kHz > 8585000)
ch.RF_kHz = 950000;
error = DL_Tuner_SetFreqBw(fe->dvb->num,ch.RF_kHz,ch.Bw);
if (error) deb_data("af903x_set_frontend return error\n");
return 0;
}
static int af903x_read_status(struct dvb_frontend *fe, fe_status_t *stat)
{
//struct af903xm_state *state = fe->demodulator_priv;
DWORD error = Error_NO_ERROR;
Bool bLock;
deb_data("- Enter %s Function - chip=%d\n",__FUNCTION__, fe->dvb->num);
*stat = 0;
error = DL_isLocked(fe->dvb->num, &bLock);
deb_data("DEBUG1 - code=: %d\n",(int) error);
if(error) return 0;//return error;
deb_data("DEBUG2 - code=: %d\n",(int) error);
if (bLock)
{
deb_data("DEBUG3 - code=: %d\n",(int) error);
// It's seems ok that always return lock to AP
*stat |= FE_HAS_SIGNAL;
*stat |= FE_HAS_CARRIER;
*stat |= FE_HAS_LOCK;
*stat |= FE_HAS_VITERBI;
*stat |= FE_HAS_SYNC;
}
deb_data("DEBUG4 - code=: %d\n",(int) error);
return 0;
}
static int af903x_read_ber(struct dvb_frontend *fe, u32 *ber)
{
//struct af903xm_state *state = fe->demodulator_priv;
DWORD error = Error_NO_ERROR;
ChannelStatistic channelStatistic;
error = DL_getChannelStatistic(fe->dvb->num, &channelStatistic);
if(error) return error;
deb_data("- af903x_read_ber postVitErrorCount : %d, postVitBitCount :%d -\n",( int ) channelStatistic.postVitErrorCount,(int) channelStatistic.postVitBitCount);
*ber = channelStatistic.postVitErrorCount * (0xFFFFFFFF / channelStatistic.postVitBitCount);
return 0;
}
static int af903x_read_snr(struct dvb_frontend* fe, u16 *snr)
{
DWORD error = Error_NO_ERROR;
Constellation constellation;
BYTE SignalSnr = 0;
*snr = 0;
error = DL_getSNR(fe->dvb->num, &constellation, &SignalSnr);
if(error) return error;
deb_data("- af903x_read_snr constellation : %d, SignalSnr :%d -\n",constellation,SignalSnr );
#ifdef QuantaMID
*snr = (u16)SignalSnr;
#else
if(constellation == 0)
*snr = (u16)SignalSnr * (0xFFFF / 23) ;
else if(constellation == 1)
*snr = (u16)SignalSnr * (0xFFFF / 26) ;
else if(constellation == 2)
*snr = (u16)SignalSnr * (0xFFFF / 29) ;
else
deb_data(" Get constellation is failed!\n");
#endif
return 0;
}
static int af903x_read_unc_blocks(struct dvb_frontend *fe, u32 *unc)
{
(void) fe;
*unc = 0;
return 0;
}
static int af903x_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
{
DWORD error = Error_NO_ERROR;
BYTE SignalStrength = 0;
#ifdef QuantaMID
Long SignalStrengthdbm;
deb_data("- Enter %s Function -\n",__FUNCTION__);
error = DL_getSignalStrengthDbm(fe->dvb->num, &SignalStrengthdbm);
if(error) return error;
deb_data("- af903x_read_signal_strengthDbm is -%d -\n",-SignalStrengthdbm);
*strength = (u16)(-SignalStrengthdbm);
#else
deb_data("- Enter %s Function -\n",__FUNCTION__);
error = DL_getSignalStrength(fe->dvb->num, &SignalStrength);
if(error) return error;
deb_data("- af903x_read_signal_strength is %d -\n",SignalStrength);
*strength = (u16)SignalStrength* (0xFFFF/100);
#endif
return 0;
}
static void af903x_release(struct dvb_frontend *demod)
{
struct af903xm_state *st = demod->demodulator_priv;
deb_data("- Enter %s Function -\n",__FUNCTION__);
kfree(st);
}
static struct dvb_frontend_ops af903x_ops;
struct dvb_frontend * af903x_attach(u8 tmp)
{
struct dvb_frontend *demod;
struct af903xm_state *st;
deb_data("- Enter %s Function -\n",__FUNCTION__);
st = kzalloc(sizeof(struct af903xm_state), GFP_KERNEL);
if (st == NULL)
return NULL;
demod = &st->demod;
demod->demodulator_priv = st;
memcpy(&st->demod.ops, &af903x_ops, sizeof(struct dvb_frontend_ops));
af903x_identify(st);
return demod;
}
EXPORT_SYMBOL(af903x_attach);
static struct dvb_frontend_ops af903x_ops = {
.info = {
.name = "AF903X USB DVB-T",
.type = FE_OFDM,
.frequency_min = 44250000,
.frequency_max = 867250000,
.frequency_stepsize = 62500,
.caps = FE_CAN_INVERSION_AUTO |
FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
FE_CAN_TRANSMISSION_MODE_AUTO |
FE_CAN_GUARD_INTERVAL_AUTO |
FE_CAN_RECOVER |
FE_CAN_HIERARCHY_AUTO,
},
.release = af903x_release,
.init = af903x_init,
.sleep = af903x_sleep,
.set_frontend = af903x_set_frontend,
.get_frontend = af903x_get_frontend,
.read_status = af903x_read_status,
.read_ber = af903x_read_ber,
.read_signal_strength = af903x_read_signal_strength,
.read_snr = af903x_read_snr,
.read_ucblocks = af903x_read_unc_blocks,
};
MODULE_AUTHOR("Jimmy Chen <JyunYu.Chen@ite.com.tw>");
MODULE_DESCRIPTION("Driver for the AF903X demodulator");
MODULE_LICENSE("GPL");
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