static int si4700_tuned(void)
{
/* Primitive tuning check: sufficient level and AFC not railed */
uint16_t status = si4700_read_reg(STATUSRSSI);
if (STATUSRSSI_RSSIr(status) >= SEEK_THRESHOLD &&
(status & STATUSRSSI_AFCRL) == 0)
return 1;
return 0;
}
/* tuner abstraction layer: read something from the tuner */
int si4700_get(int setting)
{
int val = -1; /* default for unsupported query */
if(!tuner_powered() && setting != RADIO_PRESENT)
return -1;
mutex_lock(&fmr_mutex);
switch(setting)
{
case RADIO_PRESENT:
val = tuner_present;
break;
case RADIO_TUNED:
val = si4700_tuned();
break;
case RADIO_STEREO:
val = si4700_st();
break;
case RADIO_RSSI:
val = STATUSRSSI_RSSIr(si4700_read_reg(STATUSRSSI));
break;
case RADIO_RSSI_MIN:
val = RSSI_MIN;
break;
case RADIO_RSSI_MAX:
val = RSSI_MAX;
break;
#ifdef HAVE_RDS_CAP
case RADIO_EVENT:
{
#ifdef RDS_ISR_PROCESSING
int oldlevel = disable_irq_save();
#endif
val = rds_event;
rds_event = 0;
#ifdef RDS_ISR_PROCESSING
restore_irq(oldlevel);
#endif
break;
}
#endif
}
mutex_unlock(&fmr_mutex);
return val;
}
static int rda5802_tuned(void)
{
/* Primitive tuning check: sufficient level and AFC not railed */
uint16_t status = rda5802_read_reg(STATUSRSSI);
if (STATUSRSSI_RSSIr(status) >= SEEK_THRESHOLD &&
(status & STATUSRSSI_FM_TRUE)) {
return 1;
}
return 0;
}
static int rda5802_rssi(void)
{
uint16_t status = rda5802_read_reg(STATUSRSSI);
return STATUSRSSI_RSSIr(status);
}
