Great pointers. Will check out the existing urtwn driver (I believe thats the Realtek driver; the Yoga laptop has touchscreen, apm, acpi, bios/uefi issues as well just to name a few!) and see if I pick up some techniques. Will also contact realtek if they're willing to provide something and post back results whatever they may be.
Cheers. Stefan Sperling <[email protected]> wrote: >On Mon, May 20, 2013 at 02:36:16PM -0400, Jean Lucas wrote: >> In conclusion, reverse engineering is the only option for support. >> Since using this repo to port/construct a new driver would constitute >> a derivative work, and stripping licenses is bad, one has to reinvent >> the wheel. > >Copyright covers specific expressions (implementations) of a work >(a driver for this device). Copyright for one driver doesn't cover >other implementations of drivers for the same device (the copyright >holder would need a patent for that kind of protection). > >I believe it is OK to use an existing GPL driver as a documentation >reference, and write a new driver from scratch based on that information. > >However, it is clearly not OK to copy any code from the existing driver. > >Device-specific data such as register offsets are facts, and facts >aren't copyrightable, so data contained in the driver can be used. > >"Porting" the existing driver implies copying code from it. >You could try to understand the existing driver, take notes about how >it works, and then try to write a better driver for OpenBSD. > >> Or get realtek to issue a BSD-licensed driver. > >Or documentation. Nothing beats documentation.
