/* this function is for external use only */
int TUNER_get_afc_hint(FI1236Ptr f)
{
if(f->afc_timer_installed)return TUNER_STILL_TUNING;
return f->last_afc_hint;
if(f->type==TUNER_TYPE_MT2032)
return MT2032_get_afc_hint(f);
else
return FI1236_get_afc_hint(f);
}
int FI1236_AFC(FI1236Ptr f)
{
#if 0
xf86DrvMsg(f->d.pI2CBus->scrnIndex, X_INFO, "AFC: f=%p f->count=%d f->original_frequency=%d f->afc_delta=%d\n", f, f->afc_count, f->original_frequency, f->afc_delta);
#endif
f->afc_count++;
if(f->type==TUNER_TYPE_MT2032)
{
f->last_afc_hint=MT2032_get_afc_hint(f);
xf86DrvMsg(f->d.pI2CBus->scrnIndex, X_INFO, "AFC: afc_hint=%d\n", f->last_afc_hint);
if(f->last_afc_hint==TUNER_TUNED)return 0;
if(f->afc_count>3)f->last_afc_hint=TUNER_OFF;
if(f->last_afc_hint==TUNER_OFF)
{
f->afc_delta=0;
} else
f->afc_delta+=f->last_afc_hint;
xf86DrvMsg(f->d.pI2CBus->scrnIndex, X_INFO, "AFC: Setting tuner frequency to %g\n", (0.5*(2*f->original_frequency+f->afc_delta))/16.0);
MT2032_tune(f, (1.0*f->original_frequency+0.5*f->afc_delta)/16.0, 0.03125);
if(f->last_afc_hint==TUNER_OFF)return 0;
return 1; /* call me again */
} else
{
f->last_afc_hint=FI1236_get_afc_hint(f);
if(f->last_afc_hint==TUNER_TUNED)
{
xf86DrvMsg(f->d.pI2CBus->scrnIndex, X_INFO, "AFC: TUNER_TUNNED\n");
return 0;
}
if(f->afc_count>3)f->last_afc_hint=TUNER_OFF;
if(f->last_afc_hint==TUNER_OFF)
{
f->afc_delta=0;
} else
f->afc_delta+=f->last_afc_hint;
xf86DrvMsg(f->d.pI2CBus->scrnIndex, X_INFO, "AFC: Setting tuner frequency to %g\n", (0.5*(2*f->original_frequency+f->afc_delta))/16.0);
FI1236_tune(f, f->original_frequency+f->afc_delta);
if(f->last_afc_hint==TUNER_OFF)return 0;
return 1; /* call me again */
}
return 0; /* done */
}
