Some DVB clients are broken and only recognize the DVB-T/T2 support in the frontend. Thus they are unable to use the frontend in DVB-C mode. One example is the incomplete DVBv5 API support added in mythtv 0.30: https://code.mythtv.org/trac/ticket/12638 The boolean module parameter "disable_dvb_t" removes DVB-T and DVB-T2 from the delsys list in dvb_frontend_ops and thus forces the client to recognize a DVB-C frontend. Signed-off-by: Stefan Becker <chemobejk@xxxxxxxxx> --- drivers/media/dvb-frontends/si2168.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/media/dvb-frontends/si2168.c b/drivers/media/dvb-frontends/si2168.c index 324493e05f9f..8aeb024057dc 100644 --- a/drivers/media/dvb-frontends/si2168.c +++ b/drivers/media/dvb-frontends/si2168.c @@ -14,10 +14,15 @@ * GNU General Public License for more details. */ +#include <linux/module.h> #include <linux/delay.h> #include "si2168_priv.h" +static bool disable_dvb_t; +module_param(disable_dvb_t, bool, 0644); +MODULE_PARM_DESC(disable_dvb_t, "Disable DVB-T/T2 support (default: enabled)"); + static const struct dvb_frontend_ops si2168_ops; /* execute firmware command */ @@ -800,6 +805,10 @@ static int si2168_probe(struct i2c_client *client, /* create dvb_frontend */ memcpy(&dev->fe.ops, &si2168_ops, sizeof(struct dvb_frontend_ops)); + if (disable_dvb_t) { + memset(dev->fe.ops.delsys, 0, sizeof(dev->fe.ops.delsys)); + dev->fe.ops.delsys[0] = SYS_DVBC_ANNEX_A; + } dev->fe.demodulator_priv = client; *config->i2c_adapter = dev->muxc->adapter[0]; *config->fe = &dev->fe; -- 2.20.1
