Commit c623ed63 authored by Mauro Carvalho Chehab's avatar Mauro Carvalho Chehab
Browse files

[media] dvb_frontend: estimate bandwidth also for DVB-S/S2/Turbo 



The needed bandwidth can be estimated using the symbol rate and
the rolloff factor. This could be useful for the frontend drivers,
as they don't need to calculate it themselves.

Reported-by: default avatarAntti Palosaari <crope@iki.fi>
Signed-off-by: default avatarMauro Carvalho Chehab <m.chehab@samsung.com>
parent 8dece35d

drivers/media/dvb-core/dvb_frontend.c

+17 −0
Original line number Diff line number Diff line
@@ -2072,6 +2072,23 @@ static int dtv_set_frontend(struct dvb_frontend *fe) 
	case SYS_DVBC_ANNEX_C:

		rolloff = 113;

		break;

	case SYS_DVBS:

	case SYS_TURBO:

		rolloff = 135;

		break;

	case SYS_DVBS2:

		switch (c->rolloff) {

		case ROLLOFF_20:

			rolloff = 120;

			break;

		case ROLLOFF_25:

			rolloff = 125;

			break;

		default:

		case ROLLOFF_35:

			rolloff = 135;

		}

		break;

	default:

		break;

	}

CRA Git | Maintained and supported by SUSTech CRA and CCSE