If the streaming_ctrl is called to enable TS before demod has locked
the TS will be empty. Copied the solution from the dvbsky driver for the
TechnoTrend S2-4600 device: when the state changes from unlock to
lock, call su3000_streaming_ctrl again.
Signed-off-by: Olli Salonen <olli.salo...@iki.fi>
---
drivers/media/usb/dvb-usb/dw2102.c | 28 ++++++++++++++++++++++++++++
1 file changed, 28 insertions(+)
diff --git a/drivers/media/usb/dvb-usb/dw2102.c
b/drivers/media/usb/dvb-usb/dw2102.c
index 7552521..f9ad57f 100644
--- a/drivers/media/usb/dvb-usb/dw2102.c
+++ b/drivers/media/usb/dvb-usb/dw2102.c
@@ -117,8 +117,13 @@
struct dw2102_state {
u8 initialized;
+ u8 last_lock;
struct i2c_client *i2c_client_tuner;
+
+ /* fe hook functions*/
int (*old_set_voltage)(struct dvb_frontend *f, fe_sec_voltage_t v);
+ int (*fe_read_status)(struct dvb_frontend *fe,
+ fe_status_t *status);
};
/* debug */
@@ -1001,6 +1006,23 @@ static void dw210x_led_ctrl(struct dvb_frontend *fe, int
offon)
i2c_transfer(&udev_adap->dev->i2c_adap, &msg, 1);
}
+static int tt_s2_4600_read_status(struct dvb_frontend *fe, fe_status_t *status)
+{
+ struct dvb_usb_adapter *d =
+ (struct dvb_usb_adapter *)(fe->dvb->priv);
+ struct dw2102_state *st = (struct dw2102_state *)d->dev->priv;
+ int ret;
+
+ ret = st->fe_read_status(fe, status);
+
+ /* resync slave fifo when signal change from unlock to lock */
+ if ((*status & FE_HAS_LOCK) && (!st->last_lock))
+ su3000_streaming_ctrl(d, 1);
+
+ st->last_lock = (*status & FE_HAS_LOCK) ? 1 : 0;
+ return ret;
+}
+
static struct stv0299_config sharp_z0194a_config = {
.demod_address = 0x68,
.inittab = sharp_z0194a_inittab,
@@ -1553,6 +1575,12 @@ static int tt_s2_4600_frontend_attach(struct
dvb_usb_adapter *adap)
state->i2c_client_tuner = client;
+ /* hook fe: need to resync the slave fifo when signal locks */
+ state->fe_read_status = adap->fe_adap[0].fe->ops.read_status;
+ adap->fe_adap[0].fe->ops.read_status = tt_s2_4600_read_status;
+
+ state->last_lock = 0;
+
return 0;
}
--
1.9.1
--
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