Em Fri, 07 Feb 2014 12:23:36 -0600 The Bit Pit <thebitpit@xxxxxxxxxxxxx> escreveu: > Last May I started writing a driver for a KWorld UB435Q Version 3 > tuner. I was able to make the kernel recognize the device, light it's > LED, and try to enable the decoder and tuner. > > I was unable to locate any information for the tda18272 tuner chip until > last week. I received an email at another address with a pointer to a > GPL driver that used a tda18272 in a pcie based tuner. It appears that > a bit of refactoring has been done to v4l2 since it was written. I want > to try to incorporate it into the kernel tree properly while making the > KWorld UB435Q Version 3 usable under linux. > > Would the tda18271 be a good model? > > The tda18271 organized with part in tuners and part in dvb-frontends. > What is the dvb-frontends stuff used for? > > The tda18271 files in kernel are: > > ./media/tuners/tda18271-maps.c > ./media/tuners/tda18271-fe.c > ./media/tuners/tda18271.h > ./media/tuners/tda18271-priv.h > ./media/tuners/tda18271-common.c > ./media/dvb-frontends/tda18271c2dd.c > ./media/dvb-frontends/tda18271c2dd.h > ./media/dvb-frontends/tda18271c2dd_maps.h > > The tda18272 files I located are: > > ./media/dvb/frontends/tda18272_reg.h > ./media/dvb/frontends/tda18272.h > ./media/dvb/frontends/tda18272.c > > The tuner is only used in digital mode with KWorld UB435Q Version 3. > The tda18272 supports both digital and analog. Should I include the > analog support in the tda18272 files without testing it? tda18272 is a variant of tda18212. Adding support for ATSC there is as trivial as: http://git.linuxtv.org/mchehab/experimental.git/commitdiff/14d276136221f98e2351841adb841cd420665090 Anyway, I just added support for ub435q v3 on my experimental tree: http://git.linuxtv.org/mchehab/experimental.git/shortlog/refs/heads/ub435q_v3 For now, I tested only 8VSB modulation. I'll test later for ClearQAM. Regards, Mauro -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
