From 4efb0ca5d00f2c7a8bf9632556a4b4330cf409c5 Mon Sep 17 00:00:00 2001 From: Michael Krufky Date: Tue, 22 Apr 2008 14:46:23 -0300 Subject: V4L/DVB (7435): tda18271: add function tda18271_charge_pump_source Force the main pll charge pump or cal pll charge pump to source current to the main pll loop filter or cal pll loop filter, respectively. Signed-off-by: Michael Krufky Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/frontends/tda18271-common.c | 21 +++++++++++++++++---- drivers/media/dvb/frontends/tda18271-fe.c | 18 ++++++------------ drivers/media/dvb/frontends/tda18271-priv.h | 7 +++++++ 3 files changed, 30 insertions(+), 16 deletions(-) (limited to 'drivers/media/dvb/frontends') diff --git a/drivers/media/dvb/frontends/tda18271-common.c b/drivers/media/dvb/frontends/tda18271-common.c index 84d430c5285..e27a7620a32 100644 --- a/drivers/media/dvb/frontends/tda18271-common.c +++ b/drivers/media/dvb/frontends/tda18271-common.c @@ -217,6 +217,21 @@ int tda18271_write_regs(struct dvb_frontend *fe, int idx, int len) /*---------------------------------------------------------------------*/ +int tda18271_charge_pump_source(struct dvb_frontend *fe, + enum tda18271_pll pll, int force) +{ + struct tda18271_priv *priv = fe->tuner_priv; + unsigned char *regs = priv->tda18271_regs; + + int r_cp = (pll == TDA18271_CAL_PLL) ? R_EB7 : R_EB4; + + regs[r_cp] &= ~0x20; + regs[r_cp] |= ((force & 1) << 5); + tda18271_write_regs(fe, r_cp, 1); + + return 0; +} + int tda18271_init_regs(struct dvb_frontend *fe) { struct tda18271_priv *priv = fe->tuner_priv; @@ -359,13 +374,11 @@ int tda18271_init_regs(struct dvb_frontend *fe) if ((priv->id) == TDA18271HDC2) { /* main pll cp source on */ - regs[R_EB4] = 0x61; - tda18271_write_regs(fe, R_EB4, 1); + tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 1); msleep(1); /* main pll cp source off */ - regs[R_EB4] = 0x41; - tda18271_write_regs(fe, R_EB4, 1); + tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 0); } msleep(5); /* pll locking */ diff --git a/drivers/media/dvb/frontends/tda18271-fe.c b/drivers/media/dvb/frontends/tda18271-fe.c index b3b0425dbbe..46905a773e4 100644 --- a/drivers/media/dvb/frontends/tda18271-fe.c +++ b/drivers/media/dvb/frontends/tda18271-fe.c @@ -119,14 +119,12 @@ static int tda18271_channel_configuration(struct dvb_frontend *fe, tda18271_write_regs(fe, R_TM, 7); /* main pll charge pump source */ - regs[R_EB4] |= 0x20; - tda18271_write_regs(fe, R_EB4, 1); + tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 1); msleep(1); /* normal operation for the main pll */ - regs[R_EB4] &= ~0x20; - tda18271_write_regs(fe, R_EB4, 1); + tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 0); msleep(20); @@ -285,12 +283,10 @@ static int tda18271_calibrate_rf(struct dvb_frontend *fe, u32 freq) tda18271_write_regs(fe, R_EB13, 1); /* main pll charge pump source */ - regs[R_EB4] |= 0x20; - tda18271_write_regs(fe, R_EB4, 1); + tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 1); /* cal pll charge pump source */ - regs[R_EB7] |= 0x20; - tda18271_write_regs(fe, R_EB7, 1); + tda18271_charge_pump_source(fe, TDA18271_CAL_PLL, 1); /* force dcdc converter to 0 V */ regs[R_EB14] = 0x00; @@ -328,12 +324,10 @@ static int tda18271_calibrate_rf(struct dvb_frontend *fe, u32 freq) /* --------------------------------------------------------------- */ /* normal operation for the main pll */ - regs[R_EB4] &= ~0x20; - tda18271_write_regs(fe, R_EB4, 1); + tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 0); /* normal operation for the cal pll */ - regs[R_EB7] &= ~0x20; - tda18271_write_regs(fe, R_EB7, 1); + tda18271_charge_pump_source(fe, TDA18271_CAL_PLL, 0); msleep(10); /* plls locking */ diff --git a/drivers/media/dvb/frontends/tda18271-priv.h b/drivers/media/dvb/frontends/tda18271-priv.h index ecb588e5f7d..2a37f794e1b 100644 --- a/drivers/media/dvb/frontends/tda18271-priv.h +++ b/drivers/media/dvb/frontends/tda18271-priv.h @@ -86,6 +86,11 @@ struct tda18271_rf_tracking_filter_cal { int rf_b2; }; +enum tda18271_pll { + TDA18271_MAIN_PLL, + TDA18271_CAL_PLL, +}; + enum tda18271_mode { TDA18271_ANALOG, TDA18271_DIGITAL, @@ -188,6 +193,8 @@ extern int tda18271_read_extended(struct dvb_frontend *fe); extern int tda18271_write_regs(struct dvb_frontend *fe, int idx, int len); extern int tda18271_init_regs(struct dvb_frontend *fe); +extern int tda18271_charge_pump_source(struct dvb_frontend *fe, + enum tda18271_pll pll, int force); extern int tda18271_set_standby_mode(struct dvb_frontend *fe, int sm, int sm_lt, int sm_xt); -- cgit v1.2.3