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[media] rtl2832: implement option to bypass slave demod TS

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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 <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Antti Palosaari 2013-11-28 19:15:19 -03:00 committed by Mauro Carvalho Chehab
parent db85a0403b
commit fe37b38bbb
2 changed files with 68 additions and 3 deletions
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60
drivers/media/dvb-frontends/rtl2832.c
View file

@ -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;

11
drivers/media/dvb-frontends/rtl2832.h
View file

@ -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