On Mon, Nov 17, 2014 at 12:59:09PM -0200, Mauro Carvalho Chehab wrote: > Em Sun, 9 Nov 2014 21:35:17 +0000 > Sean Young <sean@xxxxxxxx> escreveu: > > > On Thu, Nov 06, 2014 at 08:56:47AM -0500, Andy Walls wrote: > > > On November 6, 2014 8:54:28 AM EST, Andy Walls <awalls.cx18@xxxxxxxxx> wrote: > > > >Sean, > > > > > > > >Ir-kbd-i2c was never intended for Tx. > > > > > > > >You can transmit *short* arbitrary pulse-space streams with the zilog > > > >chip, by feeding it a parameter block that has the pulse timing > > > >information and then subsequently has been obfuscated. The firmware > > > >file that LIRC uses in userspace is full of predefined versions of > > > >these things for RC5 and NEC IIRC. This LIRC firmware file also holds > > > >the (de)obfuscation key. > > > > > > > >I've got a bunch of old notes on this stuff from essentially reverse > > > >engineering the firmware in the Z8. IANAL, but to me, its use in > > > >developing in-kernel stuff could be dubious. > > > > > > > >Regards, > > > >Andy > > > > Very interesting. > > > > I had considered reverse engineering the z8 firmware but I never found a > > way to access it. I guess we have three options: > > > > 1. I could use Andy's notes to implement Tx. I have not seen the original > > firmware code so I'm not contaminated by reverse engineering it. IANAL > > but I thought this is an acceptable way of writing a driver. > > > > 2. Hauppauge could prove us with documentation to write a driver with. > > I tried to get some info about that, but they are unable to get anything > related to this design so far. > > So, I think that, if you have some time to dedicate to it, the best would > be to go for option #1. Ok, thanks for asking. Andy -- if you please send your notes please, I can work on implementing the driver. I have hardware and time for to work on this. Thanks Sean -- 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
