From: Michael Krufky Date: Tue, 22 Apr 2008 17:46:23 +0000 (-0300) Subject: V4L/DVB (7436): tda18271: add basic support for slave tuner configurations X-Git-Tag: v2.6.26-rc1~1084^2~246 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=868f5ccd64113d070f09ecf2827a69b81c95ed9d;p=linux-2.6 V4L/DVB (7436): tda18271: add basic support for slave tuner configurations Signed-off-by: Michael Krufky Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/dvb/frontends/tda18271-fe.c b/drivers/media/dvb/frontends/tda18271-fe.c index 46905a773e..5b1cb7f574 100644 --- a/drivers/media/dvb/frontends/tda18271-fe.c +++ b/drivers/media/dvb/frontends/tda18271-fe.c @@ -36,6 +36,15 @@ static LIST_HEAD(hybrid_tuner_instance_list); /*---------------------------------------------------------------------*/ +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_channel_configuration(struct dvb_frontend *fe, struct tda18271_std_map_item *map, u32 freq, u32 bw) @@ -97,8 +106,14 @@ static int tda18271_channel_configuration(struct dvb_frontend *fe, /* dual tuner and agc1 extra configuration */ - /* main vco when Master, cal vco when slave */ - regs[R_EB1] |= 0x04; /* FIXME: assumes master */ + switch (priv->role) { + case TDA18271_MASTER: + regs[R_EB1] |= 0x04; /* main vco */ + break; + case TDA18271_SLAVE: + regs[R_EB1] &= ~0x04; /* cal vco */ + break; + } /* agc1 always active */ regs[R_EB1] &= ~0x02; @@ -112,19 +127,29 @@ static int tda18271_channel_configuration(struct dvb_frontend *fe, N = map->if_freq * 1000 + freq; - /* FIXME: assumes master */ - tda18271_calc_main_pll(fe, N); - tda18271_write_regs(fe, R_MPD, 4); + switch (priv->role) { + case TDA18271_MASTER: + tda18271_calc_main_pll(fe, N); + tda18271_write_regs(fe, R_MPD, 4); + break; + case TDA18271_SLAVE: + tda18271_calc_cal_pll(fe, N); + tda18271_write_regs(fe, R_CPD, 4); + + regs[R_MPD] = regs[R_CPD] & 0x7f; + tda18271_write_regs(fe, R_MPD, 1); + break; + } tda18271_write_regs(fe, R_TM, 7); - /* main pll charge pump source */ - tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 1); + /* force charge pump source */ + charge_pump_source(fe, 1); msleep(1); - /* normal operation for the main pll */ - tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 0); + /* return pll to normal operation */ + charge_pump_source(fe, 0); msleep(20); @@ -1058,6 +1083,7 @@ struct dvb_frontend *tda18271_attach(struct dvb_frontend *fe, u8 addr, case 1: /* new tuner instance */ priv->gate = (cfg) ? cfg->gate : TDA18271_GATE_AUTO; + priv->role = (cfg) ? cfg->role : TDA18271_MASTER; priv->cal_initialized = false; mutex_init(&priv->lock); diff --git a/drivers/media/dvb/frontends/tda18271-priv.h b/drivers/media/dvb/frontends/tda18271-priv.h index 2a37f794e1..4b153bc557 100644 --- a/drivers/media/dvb/frontends/tda18271-priv.h +++ b/drivers/media/dvb/frontends/tda18271-priv.h @@ -110,6 +110,7 @@ struct tda18271_priv { struct tuner_i2c_props i2c_props; enum tda18271_mode mode; + enum tda18271_role role; enum tda18271_i2c_gate gate; enum tda18271_ver id; diff --git a/drivers/media/dvb/frontends/tda18271.h b/drivers/media/dvb/frontends/tda18271.h index 44d41dce9e..b547318c95 100644 --- a/drivers/media/dvb/frontends/tda18271.h +++ b/drivers/media/dvb/frontends/tda18271.h @@ -56,6 +56,11 @@ struct tda18271_std_map { struct tda18271_std_map_item qam_8; }; +enum tda18271_role { + TDA18271_MASTER = 0, + TDA18271_SLAVE, +}; + enum tda18271_i2c_gate { TDA18271_GATE_AUTO = 0, TDA18271_GATE_ANALOG, @@ -66,6 +71,9 @@ struct tda18271_config { /* override default if freq / std settings (optional) */ struct tda18271_std_map *std_map; + /* master / slave tuner: master uses main pll, slave uses cal pll */ + enum tda18271_role role; + /* use i2c gate provided by analog or digital demod */ enum tda18271_i2c_gate gate;