Hi Michael,

On Thu, 30 Jul 2015, Michael Ira Krufky wrote:

On Thu, Jul 30, 2015 at 7:14 AM, Michael Ira Krufky [off-list ref] wrote:

quoted

On Thu, Jul 30, 2015 at 6:08 AM, Joe Perches [off-list ref] wrote:

quoted

On Thu, 2015-07-30 at 10:47 +0100, Peter Griffin wrote:

quoted

Hi Mauro / Joe,

On Wed, 22 Jul 2015, Mauro Carvalho Chehab wrote:

quoted

Em Wed, 24 Jun 2015 18:17:37 -0700
Joe Perches [off-list ref] escreveu:

quoted

On Wed, 2015-06-24 at 16:11 +0100, Peter Griffin wrote:

quoted

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 <redacted>

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?

This code block, specifically, I would rather not see added into dvb-pll:

+static int dvb_pll_get_num_regs(struct dvb_pll_priv *priv)
+{
+       int num_regs = 4;
+
+       if (strncmp(priv->pll_desc->name, "Thomson dtt7546x", 16) == 0)
+               num_regs = 5;
+
+       return num_regs;
+}
+

tuner-simple provides an infrastructure that allows this tuner to be
added in a more elegant way without the need to add special cases to
otherwise generic code, as done in the above.

I'm sorry, Peter.  Can you take a look at tuner-simple and consider
sending a new patch?

Yes sure. I wasn't actually aware that tuner-simple existed. From what I
can see briefly looking at it, it does look a more suitable way of adding
support for this tuner.

The dtt7546x is a dual tuner in that it supports dvb-t and dvb-c, however
I have only tested it with DVB-T as that is the only feed I have to my home office.

As I have a V2 incorporating all of Mauro's changes ready to send, and I'm 
on holiday for 3 weeks from Friday, I will temporarily drop support for this
tuner and NIM card in V2, and migrate over to the new driver when I return end
of August.

regards,

Peter.