Implement PIP mode to stream from slave demodulator. PIP mode is
enabled when .set_frontend is called with RF frequency 0, otherwise
normal demod mode is enabled.
Signed-off-by: Antti Palosaari <cr...@iki.fi>
---
drivers/media/dvb-frontends/rtl2832.c | 42 ++++++++++++++++++++++++++++++++---
1 file changed, 39 insertions(+), 3 deletions(-)
diff --git a/drivers/media/dvb-frontends/rtl2832.c
b/drivers/media/dvb-frontends/rtl2832.c
index eb737cf..a58b456 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)
@@ -595,6 +593,44 @@ static int rtl2832_set_frontend(struct dvb_frontend *fe)
"%s: frequency=%d bandwidth_hz=%d inversion=%d\n",
__func__, c->frequency, c->bandwidth_hz, c->inversion);
+ /* PIP mode */
+ if (c->frequency == 0) {
+ 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;
+
+ goto exit_soft_reset;
+ } else {
+ ret = rtl2832_wr_regs(priv, 0x92, 1, "\x00\x0f\xff", 3);
+ if (ret)
+ goto err;
+ }
+
/* program tuner */
if (fe->ops.tuner_ops.set_params)
fe->ops.tuner_ops.set_params(fe);
@@ -661,7 +697,7 @@ static int rtl2832_set_frontend(struct dvb_frontend *fe)
if (ret)
goto err;
-
+exit_soft_reset:
/* soft reset */
ret = rtl2832_wr_demod_reg(priv, DVBT_SOFT_RST, 0x1);
if (ret)
--
http://palosaari.fi/
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