Em Mon, 10 Jan 2022 13:52:43 +0100 Robert Schlabbach <robert_s@xxxxxxx> escreveu: > From: "Mauro Carvalho Chehab" <mchehab@xxxxxxxxxx> > > Now, get_frontend is an internal kAPI. If I'm not mistaken, it was > > designed to be used between tuners and demods, for the cases where the > > demod would need to know what was the bandwidth set at the tuner. > > So, I'm OK if it returns the actually applied bandwidth, provided that > > such value is not returned to userspace via DTV_BANDWIDTH_HZ. So, > > props->bandwidth_hz should not be updated after its call. > > Good point. It might indeed be interesting for demod drivers, e.g. to > adapt the AFC range setting to the (band)width of the signal delivered > by the tuner (not that I know any driver which does, but hypothetically), > but beyond that, it has no use. So I agree it should not be passed to > userspace. > > But for the hypothetical use by the demod driver, the si2157 driver > should return correct values, so the patch I submitted can remain as > it is. Ok. FYI, just applied the patches on media-stage. > > Best Regards, > -Robert Schlabbach Thanks, Mauro
