[PATCH] cxusb: TS mode setting for TT CT2-4400

[PATCH] cxusb: TS mode setting for TT CT2-4400

[Olli Salonen]

There is a new version of the TechnoTrend CT2-4400 USB tuner. The difference is the demodulator that is used (Si2168-B40 instead of -A30).

For TT CT2-4400v2 a TS stream related parameter needs to be set, otherwise the stream becomes corrupted. The Windows driver for both CT2-4400 and CT2-4400v2 sets this as well. After this patch the driver works for both versions.

Signed-off-by: Olli Salonen <olli.salonen@iki.fi>
---
 drivers/media/usb/dvb-usb/cxusb.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/media/usb/dvb-usb/cxusb.c b/drivers/media/usb/dvb-usb/cxusb.c
index 356abb3..8925b3946 100644
--- a/drivers/media/usb/dvb-usb/cxusb.c
+++ b/drivers/media/usb/dvb-usb/cxusb.c
@@ -1438,6 +1438,12 @@ static int cxusb_tt_ct2_4400_attach(struct dvb_usb_adapter *adap)
 	si2168_config.i2c_adapter = &adapter;
 	si2168_config.fe = &adap->fe_adap[0].fe;
 	si2168_config.ts_mode = SI2168_TS_PARALLEL;
+
+	/* CT2-4400v2 TS gets corrupted without this */
+	if (d->udev->descriptor.idProduct ==
+		USB_PID_TECHNOTREND_TVSTICK_CT2_4400)
+		si2168_config.ts_mode |= 0x40;
+
 	memset(&info, 0, sizeof(struct i2c_board_info));
 	strlcpy(info.type, "si2168", I2C_NAME_SIZE);
 	info.addr = 0x64;
-- 
1.9.1

Re: [PATCH] cxusb: TS mode setting for TT CT2-4400

[Antti Palosaari]

Reviewed-by: Antti Palosaari <crope@iki.fi>

Antti

On 10/26/2014 09:56 AM, Olli Salonen wrote:
> There is a new version of the TechnoTrend CT2-4400 USB tuner. The difference is the demodulator that is used (Si2168-B40 instead of -A30).
>
> For TT CT2-4400v2 a TS stream related parameter needs to be set, otherwise the stream becomes corrupted. The Windows driver for both CT2-4400 and CT2-4400v2 sets this as well. After this patch the driver works for both versions.
>
> Signed-off-by: Olli Salonen <olli.salonen@iki.fi>
> ---
>   drivers/media/usb/dvb-usb/cxusb.c | 6 ++++++
>   1 file changed, 6 insertions(+)
>
> diff --git a/drivers/media/usb/dvb-usb/cxusb.c b/drivers/media/usb/dvb-usb/cxusb.c
> index 356abb3..8925b3946 100644
> --- a/drivers/media/usb/dvb-usb/cxusb.c
> +++ b/drivers/media/usb/dvb-usb/cxusb.c
> @@ -1438,6 +1438,12 @@ static int cxusb_tt_ct2_4400_attach(struct dvb_usb_adapter *adap)
>   	si2168_config.i2c_adapter = &adapter;
>   	si2168_config.fe = &adap->fe_adap[0].fe;
>   	si2168_config.ts_mode = SI2168_TS_PARALLEL;
> +
> +	/* CT2-4400v2 TS gets corrupted without this */
> +	if (d->udev->descriptor.idProduct ==
> +		USB_PID_TECHNOTREND_TVSTICK_CT2_4400)
> +		si2168_config.ts_mode |= 0x40;
> +
>   	memset(&info, 0, sizeof(struct i2c_board_info));
>   	strlcpy(info.type, "si2168", I2C_NAME_SIZE);
>   	info.addr = 0x64;
>

-- 
http://palosaari.fi/