[linux-dvb] Re: CX88 i2c issue w/ DVB tuners

[Johannes Stezenbach <js@linuxtv.org>]

Holger Waechtler wrote:
> Johannes Stezenbach wrote:
> >
> >Autoprobing isn't braindead.
> >
> >Braindead is that chip vendors omit the device id registers one
> >needs to do autoprobing _right_. (It's Philips' fault that they
> >didn't include device ids in the I2C spec.)
> 
> The i2c protocol was never specified to be flexible, it does a very 
> special task and it does it quite well. Ok, i2c has it's quirks, but 
> that's not our problem right now, our problem is the linux i2c 
> infrastructure implementation by people who misunderstood the reality.

Maybe you live in a different reality than I do ;-/

I've seen the source of [name deleted]'s STB software, which has
absolutely nothing to do with Linux. And guess what? They do
device probing, too. Because in real life one piece of software
has to run on a multitude of hardware revisions.

I can't wait until [name deleted] tells you that the new
XY frontend is cheaper that Samsung's, and could you not add
device probing to your USB thingy firmware.

The only thing that is "broken" about kernel I2C autoprobing is
that it is too simple. But hey, it worked for all those years ;-)

Now, for those cases where the simple autoprobing indeed cannot
be made to work, the addition of a NOPROBE flag and doing more
sophisticated probing seems like a straight forward thing to me.


Johannes