Re: [PATCH 02/12] [media] dvb-pll: Add support for THOMSON DTT7546X tuner.

Michael Ira Krufky
2015-07-30T11:14:51Z

On Thu, Jul 30, 2015 at 6:08 AM, Joe Perches <joe@perches.com> wrote:
> On Thu, 2015-07-30 at 10:47 +0100, Peter Griffin wrote:
>> Hi Mauro / Joe,
>>
>> On Wed, 22 Jul 2015, Mauro Carvalho Chehab wrote:
>>
>> > Em Wed, 24 Jun 2015 18:17:37 -0700
>> > Joe Perches <joe@perches.com> escreveu:
>> >
>> > > On Wed, 2015-06-24 at 16:11 +0100, Peter Griffin wrote:
>> > > > This is used in conjunction with the STV0367 demodulator on
>> > > > the STV0367-NIM-V1.0 NIM card which can be used with the STi
>> > > > STB SoC's.
>> > >
>> > > Barely associated to this specific patch, but for
>> > > dvb-pll.c, another thing that seems possible is to
>> > > convert the struct dvb_pll_desc uses to const and
>> > > change the "entries" fixed array size from 12 to []
>> > >
>> > > It'd save a couple KB overall and remove ~5KB of data.
>> > >
>> > > $ size drivers/media/dvb-frontends/dvb-pll.o*
>> > > text data bss dec hex filename
>> > > 8520 1552 2120 12192 2fa0 drivers/media/dvb-frontends/dvb-pll.o.new
>> > > 5624 6363 2120 14107 371b drivers/media/dvb-frontends/dvb-pll.o.old
>> >
>> > Peter,
>> >
>> > Please add this patch on the next patch series you submit.
>>
>> Ok will do, I've added this patch with a slightly updated commit message
>> to my series.
>>
>> Joe - Can I add your signed-off-by?
>
> Signed-off-by: Joe Perches <joe@perches.com>

Reviewed-by: Michael Ira Krufky <mkrufky@samsung.com>

Joe, nice optimization - thanks for that.

With regards to Peter's patch, is this a digital-only tuner, or is it
a hybrid tuner?

The 5th byte that you send to the THOMSON DTT7546X seems to resemble
the 'auxiliary byte' that gets set in tuner-simple.c

I'm not sure that dvb-pll is the right place for this tuner
definition, if this is the case. Maybe this definition belongs in
tuner-simple instead, if the pattern matches better there.

Mauro, can we hold off on merging Peter's patch until we resolve this?

-Michael Ira Krufky