On Tue, Dec 16, 2008 at 9:38 AM, Dan Williams <dcbw@xxxxxxxxxx> wrote: > On Mon, 2008-12-15 at 22:44 -0500, Angel Roman wrote: >> Hi Colin, >> >> I have support for the gspi as well. I've been trying to get in contact >> with Dan Williams in order to contribute it to the list. > > Sorry about that... it's in my queue and I'll try to get to do some > review in the next few days. Doing the new interface isn't a ton of > code, and I'd expect both yours and Colin's drivers to be quite similar > as there's only a few ways this thing can be done :) > > The submission process is basically just like Colin did; generate a > series of patches of your latest code (split into independent patches if > possible) based on a kernel version (ideally the latest kernel version > or better yet, wireless-testing.git) and then post it to linux-wireless > and maybe cc libertas-dev as well. We've been working/testing against a kernel that's pretty close to upstream and then also against wireless-testing to make this driver upstream-friendly and hopefully easy to merge. If you have access to a Blackfin development board, you can also clone our tree with the driver integrated: http://git.cozybit.com/ however it should be simple enough to build for other embedded platforms. > Is there a generic SPI layer that could be used for the board-specific > bits too, rather than putting that stuff in the libertas tree? I assume > that the SPI bus is more or less generic on your hardware (ie you could > put something else on the other end instead of the 8686), and thus it > would be better if we could figure out way not to put some much board > specific logic into the libertas driver itself. The exception is the GPIO-based chip select signal that the '8686 requires, we otherwise use the generic SPI layer. The protocol requires the host to assert the CS# line and then hold it low for the entire transaction (which can be of arbitrary length). Most SPI host controllers cannot do this and therefore a plain GPIO is used. The board-specific config for this is not much different from configuring your SPI chips in your mach-xxxx/board.c -- Andrey Yurovsky cozybit Inc. -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
