From 5fa88151ecdbfc9f2092cf1add7966c546b95dfa Mon Sep 17 00:00:00 2001 From: CrazyCat Date: Fri, 21 Oct 2016 17:35:40 -0200 Subject: [PATCH] [media] dvb-usb-cxusb: Geniatech T230 - resync TS FIFO after lock This patch fix streaming issue for Geniatech T230/PT360. Signed-off-by: CrazyCat Signed-off-by: Mauro Carvalho Chehab --- 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 2434030..9b8771e 100644 --- a/drivers/media/usb/dvb-usb/cxusb.c +++ b/drivers/media/usb/dvb-usb/cxusb.c @@ -369,6 +369,26 @@ 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; @@ -1372,6 +1392,12 @@ static int cxusb_mygica_t230_frontend_attach(struct dvb_usb_adapter *adap) 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 18acda1..66429d7 100644 --- a/drivers/media/usb/dvb-usb/cxusb.h +++ b/drivers/media/usb/dvb-usb/cxusb.h @@ -37,6 +37,11 @@ struct cxusb_state { struct i2c_client *i2c_client_tuner; unsigned char data[MAX_XFER_SIZE]; + + struct mutex stream_mutex; + u8 last_lock; + int (*fe_read_status)(struct dvb_frontend *fe, + enum fe_status *status); }; #endif -- 2.7.4