[PATCH] dvb-usb-cxusb: Geniatech T230 - resync TS FIFO after lock

[CrazyCat]

This patch fix streaming issue for Geniatech T230/PT360.

Signed-off-by: CrazyCat <crazyca...@narod.ru>
---
 drivers/media/usb/dvb-usb/cxusb.c | 26 ++++++++++++++++++++++++++
 drivers/media/usb/dvb-usb/cxusb.h |  5 +++++
 2 files changed, 31 insertions(+)

diff --git a/drivers/media/usb/dvb-usb/cxusb.c 
b/drivers/media/usb/dvb-usb/cxusb.c
index 3701f59..46b59c3 100644
--- a/drivers/media/usb/dvb-usb/cxusb.c
+++ b/drivers/media/usb/dvb-usb/cxusb.c
@@ -368,6 +368,26 @@ static int cxusb_aver_streaming_ctrl(struct 
dvb_usb_adapter *adap, int onoff)
        return 0;
 }
 
+static int cxusb_read_status(struct dvb_frontend *fe,
+                                 enum fe_status *status)
+{
+       struct dvb_usb_adapter *adap = (struct dvb_usb_adapter *)fe->dvb->priv;
+       struct cxusb_state *state = (struct cxusb_state *)adap->dev->priv;
+       int ret;
+
+       ret = state->fe_read_status(fe, status);
+
+       /* it need resync slave fifo when signal change from unlock to lock.*/
+       if ((*status & FE_HAS_LOCK) && (!state->last_lock)) {
+               mutex_lock(&state->stream_mutex);
+               cxusb_streaming_ctrl(adap, 1);
+               mutex_unlock(&state->stream_mutex);
+       }
+
+       state->last_lock = (*status & FE_HAS_LOCK) ? 1 : 0;
+       return ret;
+}
+
 static void cxusb_d680_dmb_drain_message(struct dvb_usb_device *d)
 {
        int       ep = d->props.generic_bulk_ctrl_endpoint;
@@ -1370,6 +1390,12 @@ static int cxusb_mygica_t230_frontend_attach(struct 
dvb_usb_adapter *adap)
        st->i2c_client_demod = client_demod;
        st->i2c_client_tuner = client_tuner;
 
+       /* hook fe: need to resync the slave fifo when signal locks. */
+       mutex_init(&st->stream_mutex);
+       st->last_lock = 0;
+       st->fe_read_status = adap->fe_adap[0].fe->ops.read_status;
+       adap->fe_adap[0].fe->ops.read_status = cxusb_read_status;
+
        return 0;
 }
 
diff --git a/drivers/media/usb/dvb-usb/cxusb.h 
b/drivers/media/usb/dvb-usb/cxusb.h
index 527ff79..22b3253 100644
--- a/drivers/media/usb/dvb-usb/cxusb.h
+++ b/drivers/media/usb/dvb-usb/cxusb.h
@@ -32,6 +32,11 @@ struct cxusb_state {
        u8 gpio_write_state[3];
        struct i2c_client *i2c_client_demod;
        struct i2c_client *i2c_client_tuner;
+
+       struct mutex stream_mutex;
+       u8 last_lock;
+       int (*fe_read_status)(struct dvb_frontend *fe,
+               enum fe_status *status);
 };
 
 #endif
-- 
1.9.1


--
To unsubscribe from this list: send the line "unsubscribe linux-media" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html