static int tda18271_por(struct dvb_frontend *fe)
{
struct tda18271_priv *priv = fe->tuner_priv;
unsigned char *regs = priv->tda18271_regs;
int ret;
/* power up detector 1 */
regs[R_EB12] &= ~0x20;
ret = tda18271_write_regs(fe, R_EB12, 1);
if (tda_fail(ret))
goto fail;
regs[R_EB18] &= ~0x80; /* turn agc1 loop on */
regs[R_EB18] &= ~0x03; /* set agc1_gain to 6 dB */
ret = tda18271_write_regs(fe, R_EB18, 1);
if (tda_fail(ret))
goto fail;
regs[R_EB21] |= 0x03; /* set agc2_gain to -6 dB */
/* POR mode */
ret = tda18271_set_standby_mode(fe, 1, 0, 0);
if (tda_fail(ret))
goto fail;
/* disable 1.5 MHz low pass filter */
regs[R_EB23] &= ~0x04; /* forcelp_fc2_en = 0 */
regs[R_EB23] &= ~0x02; /* XXX: lp_fc[2] = 0 */
ret = tda18271_write_regs(fe, R_EB21, 3);
fail:
return ret;
}
static int tda18271_por(struct dvb_frontend *fe)
{
struct tda18271_priv *priv = fe->tuner_priv;
unsigned char *regs = priv->tda18271_regs;
int ret;
regs[R_EB12] &= ~0x20;
ret = tda18271_write_regs(fe, R_EB12, 1);
if (tda_fail(ret))
goto fail;
regs[R_EB18] &= ~0x80;
regs[R_EB18] &= ~0x03;
ret = tda18271_write_regs(fe, R_EB18, 1);
if (tda_fail(ret))
goto fail;
regs[R_EB21] |= 0x03;
ret = tda18271_set_standby_mode(fe, 1, 0, 0);
if (tda_fail(ret))
goto fail;
regs[R_EB23] &= ~0x04;
regs[R_EB23] &= ~0x02;
ret = tda18271_write_regs(fe, R_EB21, 3);
fail:
return ret;
}
static int tda18271c2_rf_tracking_filters_correction(struct dvb_frontend *fe,
u32 freq)
{
struct tda18271_priv *priv = fe->tuner_priv;
struct tda18271_rf_tracking_filter_cal *map = priv->rf_cal_state;
unsigned char *regs = priv->tda18271_regs;
int i, ret;
u8 tm_current, dc_over_dt, rf_tab;
s32 rfcal_comp, approx;
/* power up */
ret = tda18271_set_standby_mode(fe, 0, 0, 0);
if (tda_fail(ret))
goto fail;
/* read die current temperature */
tm_current = tda18271_read_thermometer(fe);
/* frequency dependent parameters */
tda18271_calc_rf_cal(fe, &freq);
rf_tab = regs[R_EB14];
i = tda18271_lookup_rf_band(fe, &freq, NULL);
if (tda_fail(i))
return i;
if ((0 == map[i].rf3) || (freq / 1000 < map[i].rf2)) {
approx = map[i].rf_a1 * (s32)(freq / 1000 - map[i].rf1) +
map[i].rf_b1 + rf_tab;
} else {
approx = map[i].rf_a2 * (s32)(freq / 1000 - map[i].rf2) +
map[i].rf_b2 + rf_tab;
}
if (approx < 0)
approx = 0;
if (approx > 255)
approx = 255;
tda18271_lookup_map(fe, RF_CAL_DC_OVER_DT, &freq, &dc_over_dt);
/* calculate temperature compensation */
rfcal_comp = dc_over_dt * (s32)(tm_current - priv->tm_rfcal) / 1000;
regs[R_EB14] = (unsigned char)(approx + rfcal_comp);
ret = tda18271_write_regs(fe, R_EB14, 1);
fail:
return ret;
}
static int tda18271_toggle_output(struct dvb_frontend *fe, int standby)
{
struct tda18271_priv *priv = fe->tuner_priv;
int ret = tda18271_set_standby_mode(fe, standby ? 1 : 0,
priv->output_opt & TDA18271_OUTPUT_LT_OFF ? 1 : 0,
priv->output_opt & TDA18271_OUTPUT_XT_OFF ? 1 : 0);
if (tda_fail(ret))
goto fail;
tda_dbg("%s mode: xtal oscillator %s, slave tuner loop thru %s\n",
standby ? "standby" : "active",
priv->output_opt & TDA18271_OUTPUT_XT_OFF ? "off" : "on",
priv->output_opt & TDA18271_OUTPUT_LT_OFF ? "off" : "on");
fail:
return ret;
}
static int tda18271_init(struct dvb_frontend *fe)
{
struct tda18271_priv *priv = fe->tuner_priv;
int ret;
mutex_lock(&priv->lock);
/* full power up */
ret = tda18271_set_standby_mode(fe, 0, 0, 0);
if (tda_fail(ret))
goto fail;
/* initialization */
ret = tda18271_ir_cal_init(fe);
if (tda_fail(ret))
goto fail;
if (priv->id == TDA18271HDC2)
tda18271c2_rf_cal_init(fe);
fail:
mutex_unlock(&priv->lock);
return ret;
}
