From: Mauro Carvalho Chehab <m.chehab@samsung.com>
To: The Bit Pit <thebitpit@earthlink.net>
Cc: linux-media@vger.kernel.org
Subject: Re: Driver for KWorld UB435Q Version 3 (ATSC) USB id: 1b80:e34c
Date: Mon, 03 Mar 2014 16:46:51 -0300 [thread overview]
Message-ID: <20140303164651.09f6123f@samsung.com> (raw)
In-Reply-To: <52F524A8.9000008@earthlink.net>
Em Fri, 07 Feb 2014 12:23:36 -0600
The Bit Pit <thebitpit@earthlink.net> 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
next prev parent reply other threads:[~2014-03-03 19:47 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-07 18:23 Driver for KWorld UB435Q Version 3 (ATSC) USB id: 1b80:e34c The Bit Pit
2014-02-07 18:39 ` Steven Toth
2014-02-07 20:17 ` The Bit Pit
2014-02-07 20:51 ` Steven Toth
2014-02-07 20:24 ` Manu Abraham
2014-02-07 20:48 ` Steven Toth
2014-03-03 19:46 ` Mauro Carvalho Chehab [this message]
-- strict thread matches above, loose matches on Subject: below --
2013-05-03 19:50 The Bit Pit
2013-05-03 21:29 ` Devin Heitmueller
2013-05-06 20:16 ` The Bit Pit
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