From fe37b38bbb7145e080b094b790ba8427945c6ecc Mon Sep 17 00:00:00 2001 From: Antti Palosaari Date: Thu, 28 Nov 2013 19:15:19 -0300 Subject: [media] rtl2832: implement option to bypass slave demod TS Implement partial PIP mode to carry TS from slave demodulator, through that master demodulator. RTL2832 demod has TS input interface to connected another demodulator TS output. Signed-off-by: Antti Palosaari Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-frontends/rtl2832.c | 60 +++++++++++++++++++++++++++++++++-- drivers/media/dvb-frontends/rtl2832.h | 11 +++++++ 2 files changed, 68 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/media/dvb-frontends/rtl2832.c b/drivers/media/dvb-frontends/rtl2832.c index eb737cf29a36..9026e1aee163 100644 --- a/drivers/media/dvb-frontends/rtl2832.c +++ b/drivers/media/dvb-frontends/rtl2832.c @@ -258,13 +258,11 @@ static int rtl2832_rd_regs(struct rtl2832_priv *priv, u8 reg, u8 page, u8 *val, return rtl2832_rd(priv, reg, val, len); } -#if 0 /* currently not used */ /* write single register */ static int rtl2832_wr_reg(struct rtl2832_priv *priv, u8 reg, u8 page, u8 val) { return rtl2832_wr_regs(priv, reg, page, &val, 1); } -#endif /* read single register */ static int rtl2832_rd_reg(struct rtl2832_priv *priv, u8 reg, u8 page, u8 *val) @@ -599,6 +597,11 @@ static int rtl2832_set_frontend(struct dvb_frontend *fe) if (fe->ops.tuner_ops.set_params) fe->ops.tuner_ops.set_params(fe); + /* PIP mode related */ + ret = rtl2832_wr_regs(priv, 0x92, 1, "\x00\x0f\xff", 3); + if (ret) + goto err; + /* If the frontend has get_if_frequency(), use it */ if (fe->ops.tuner_ops.get_if_frequency) { u32 if_freq; @@ -661,7 +664,6 @@ static int rtl2832_set_frontend(struct dvb_frontend *fe) if (ret) goto err; - /* soft reset */ ret = rtl2832_wr_demod_reg(priv, DVBT_SOFT_RST, 0x1); if (ret) @@ -1020,6 +1022,58 @@ static int rtl2832_deselect(struct i2c_adapter *adap, void *mux_priv, return 0; } +int rtl2832_enable_external_ts_if(struct dvb_frontend *fe) +{ + struct rtl2832_priv *priv = fe->demodulator_priv; + int ret; + + dev_dbg(&priv->i2c->dev, "%s: setting PIP mode\n", __func__); + + ret = rtl2832_wr_regs(priv, 0x0c, 1, "\x5f\xff", 2); + if (ret) + goto err; + + ret = rtl2832_wr_demod_reg(priv, DVBT_PIP_ON, 0x1); + if (ret) + goto err; + + ret = rtl2832_wr_reg(priv, 0xbc, 0, 0x18); + if (ret) + goto err; + + ret = rtl2832_wr_reg(priv, 0x22, 0, 0x01); + if (ret) + goto err; + + ret = rtl2832_wr_reg(priv, 0x26, 0, 0x1f); + if (ret) + goto err; + + ret = rtl2832_wr_reg(priv, 0x27, 0, 0xff); + if (ret) + goto err; + + ret = rtl2832_wr_regs(priv, 0x92, 1, "\x7f\xf7\xff", 3); + if (ret) + goto err; + + /* soft reset */ + ret = rtl2832_wr_demod_reg(priv, DVBT_SOFT_RST, 0x1); + if (ret) + goto err; + + ret = rtl2832_wr_demod_reg(priv, DVBT_SOFT_RST, 0x0); + if (ret) + goto err; + + return 0; +err: + dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); + return ret; + +} +EXPORT_SYMBOL(rtl2832_enable_external_ts_if); + struct i2c_adapter *rtl2832_get_i2c_adapter(struct dvb_frontend *fe) { struct rtl2832_priv *priv = fe->demodulator_priv; diff --git a/drivers/media/dvb-frontends/rtl2832.h b/drivers/media/dvb-frontends/rtl2832.h index cb3b6b0775b8..5254c1dfc8de 100644 --- a/drivers/media/dvb-frontends/rtl2832.h +++ b/drivers/media/dvb-frontends/rtl2832.h @@ -64,6 +64,10 @@ extern struct i2c_adapter *rtl2832_get_private_i2c_adapter( struct dvb_frontend *fe ); +extern int rtl2832_enable_external_ts_if( + struct dvb_frontend *fe +); + #else static inline struct dvb_frontend *rtl2832_attach( @@ -89,6 +93,13 @@ static inline struct i2c_adapter *rtl2832_get_private_i2c_adapter( return NULL; } +static inline int rtl2832_enable_external_ts_if( + struct dvb_frontend *fe +) +{ + return -ENODEV; +} + #endif -- cgit v1.2.3