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V4L/DVB (7212): tda18271: move rf calibration code from tda18271c1_tune into a new function

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move rf calibration code from tda18271c1_tune into a new function,
tda18271c1_rf_tracking_filter_calibration

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Michael Krufky 2008-04-22 14:42:07 -03:00 • committed by Mauro Carvalho Chehab
parent a60b866567
commit 4d2d42bcd8
1 changed files with 19 additions and 11 deletions
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30
drivers/media/dvb/frontends/tda18271-fe.c
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@ -652,21 +652,13 @@ static int tda18271c2_tune(struct dvb_frontend *fe,
/* ------------------------------------------------------------------ */ /* ------------------------------------------------------------------ */
static int tda18271c1_tune(struct dvb_frontend *fe, static int tda18271c1_rf_tracking_filter_calibration(struct dvb_frontend *fe,
u32 ifc, u32 freq, u32 bw, u8 std, int radio) u32 freq, u32 bw)
{ {
struct tda18271_priv *priv = fe->tuner_priv; struct tda18271_priv *priv = fe->tuner_priv;
unsigned char *regs = priv->tda18271_regs; unsigned char *regs = priv->tda18271_regs;
u32 N = 0; u32 N = 0;
tda18271_init(fe);
mutex_lock(&priv->lock);
tda_dbg("freq = %d, ifc = %d\n", freq, ifc);
/* RF tracking filter calibration */
/* calculate bp filter */ /* calculate bp filter */
tda18271_calc_bp_filter(fe, &freq); tda18271_calc_bp_filter(fe, &freq);
tda18271_write_regs(fe, R_EP1, 1); tda18271_write_regs(fe, R_EP1, 1);
@ -737,7 +729,7 @@ static int tda18271c1_tune(struct dvb_frontend *fe,
regs[R_EB7] = 0x40; regs[R_EB7] = 0x40;
tda18271_write_regs(fe, R_EB7, 1); tda18271_write_regs(fe, R_EB7, 1);
msleep(10); msleep(10); /* pll locking */
regs[R_EB20] = 0xec; regs[R_EB20] = 0xec;
tda18271_write_regs(fe, R_EB20, 1); tda18271_write_regs(fe, R_EB20, 1);
@ -752,6 +744,22 @@ static int tda18271c1_tune(struct dvb_frontend *fe,
if (0 == tda18271_calc_rf_cal(fe, &freq)) if (0 == tda18271_calc_rf_cal(fe, &freq))
tda18271_write_regs(fe, R_EB14, 1); tda18271_write_regs(fe, R_EB14, 1);
return 0;
}
static int tda18271c1_tune(struct dvb_frontend *fe,
u32 ifc, u32 freq, u32 bw, u8 std, int radio)
{
struct tda18271_priv *priv = fe->tuner_priv;
tda18271_init(fe);
mutex_lock(&priv->lock);
tda_dbg("freq = %d, ifc = %d\n", freq, ifc);
tda18271c1_rf_tracking_filter_calibration(fe, freq, bw);
tda18271_channel_configuration(fe, ifc, freq, bw, std, radio); tda18271_channel_configuration(fe, ifc, freq, bw, std, radio);
mutex_unlock(&priv->lock); mutex_unlock(&priv->lock);