static inline int charge_pump_source(struct dvb_frontend *fe, int force)
{
struct tda18271_priv *priv = fe->tuner_priv;
return tda18271_charge_pump_source(fe,
(priv->role == TDA18271_SLAVE) ?
TDA18271_CAL_PLL :
TDA18271_MAIN_PLL, force);
}
static int tda18271_calibrate_rf(struct dvb_frontend *fe, u32 freq)
{
struct tda18271_priv *priv = fe->tuner_priv;
unsigned char *regs = priv->tda18271_regs;
u32 N;
/* set CAL mode to normal */
regs[R_EP4] &= ~0x03;
tda18271_write_regs(fe, R_EP4, 1);
/* switch off agc1 */
regs[R_EP3] |= 0x40; /* sm_lt = 1 */
regs[R_EB18] |= 0x03; /* set agc1_gain to 15 dB */
tda18271_write_regs(fe, R_EB18, 1);
/* frequency dependent parameters */
tda18271_calc_bp_filter(fe, &freq);
tda18271_calc_gain_taper(fe, &freq);
tda18271_calc_rf_band(fe, &freq);
tda18271_calc_km(fe, &freq);
tda18271_write_regs(fe, R_EP1, 3);
tda18271_write_regs(fe, R_EB13, 1);
/* main pll charge pump source */
tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 1);
/* cal pll charge pump source */
tda18271_charge_pump_source(fe, TDA18271_CAL_PLL, 1);
/* force dcdc converter to 0 V */
regs[R_EB14] = 0x00;
tda18271_write_regs(fe, R_EB14, 1);
/* disable plls lock */
regs[R_EB20] &= ~0x20;
tda18271_write_regs(fe, R_EB20, 1);
/* set CAL mode to RF tracking filter calibration */
regs[R_EP4] |= 0x03;
tda18271_write_regs(fe, R_EP4, 2);
/* --------------------------------------------------------------- */
/* set the internal calibration signal */
N = freq;
tda18271_calc_cal_pll(fe, N);
tda18271_write_regs(fe, R_CPD, 4);
/* downconvert internal calibration */
N += 1000000;
tda18271_calc_main_pll(fe, N);
tda18271_write_regs(fe, R_MPD, 4);
msleep(5);
tda18271_write_regs(fe, R_EP2, 1);
tda18271_write_regs(fe, R_EP1, 1);
tda18271_write_regs(fe, R_EP2, 1);
tda18271_write_regs(fe, R_EP1, 1);
/* --------------------------------------------------------------- */
/* normal operation for the main pll */
tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 0);
/* normal operation for the cal pll */
tda18271_charge_pump_source(fe, TDA18271_CAL_PLL, 0);
msleep(10); /* plls locking */
/* launch the rf tracking filters calibration */
regs[R_EB20] |= 0x20;
tda18271_write_regs(fe, R_EB20, 1);
msleep(60); /* calibration */
/* --------------------------------------------------------------- */
/* set CAL mode to normal */
regs[R_EP4] &= ~0x03;
/* switch on agc1 */
regs[R_EP3] &= ~0x40; /* sm_lt = 0 */
regs[R_EB18] &= ~0x03; /* set agc1_gain to 6 dB */
tda18271_write_regs(fe, R_EB18, 1);
tda18271_write_regs(fe, R_EP3, 2);
/* synchronization */
tda18271_write_regs(fe, R_EP1, 1);
/* get calibration result */
tda18271_read_extended(fe);
return regs[R_EB14];
}
static int tda18271_calibrate_rf(struct dvb_frontend *fe, u32 freq)
{
struct tda18271_priv *priv = fe->tuner_priv;
unsigned char *regs = priv->tda18271_regs;
u32 N;
regs[R_EP4] &= ~0x03;
tda18271_write_regs(fe, R_EP4, 1);
regs[R_EP3] |= 0x40;
regs[R_EB18] |= 0x03;
tda18271_write_regs(fe, R_EB18, 1);
tda18271_calc_bp_filter(fe, &freq);
tda18271_calc_gain_taper(fe, &freq);
tda18271_calc_rf_band(fe, &freq);
tda18271_calc_km(fe, &freq);
tda18271_write_regs(fe, R_EP1, 3);
tda18271_write_regs(fe, R_EB13, 1);
tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 1);
tda18271_charge_pump_source(fe, TDA18271_CAL_PLL, 1);
regs[R_EB14] = 0x00;
tda18271_write_regs(fe, R_EB14, 1);
regs[R_EB20] &= ~0x20;
tda18271_write_regs(fe, R_EB20, 1);
regs[R_EP4] |= 0x03;
tda18271_write_regs(fe, R_EP4, 2);
N = freq;
tda18271_calc_cal_pll(fe, N);
tda18271_write_regs(fe, R_CPD, 4);
N += 1000000;
tda18271_calc_main_pll(fe, N);
tda18271_write_regs(fe, R_MPD, 4);
msleep(5);
tda18271_write_regs(fe, R_EP2, 1);
tda18271_write_regs(fe, R_EP1, 1);
tda18271_write_regs(fe, R_EP2, 1);
tda18271_write_regs(fe, R_EP1, 1);
tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 0);
tda18271_charge_pump_source(fe, TDA18271_CAL_PLL, 0);
msleep(10);
regs[R_EB20] |= 0x20;
tda18271_write_regs(fe, R_EB20, 1);
msleep(60);
regs[R_EP4] &= ~0x03;
regs[R_EP3] &= ~0x40;
regs[R_EB18] &= ~0x03;
tda18271_write_regs(fe, R_EB18, 1);
tda18271_write_regs(fe, R_EP3, 2);
tda18271_write_regs(fe, R_EP1, 1);
tda18271_read_extended(fe);
return regs[R_EB14];
}
