On Wed, Nov 28, 2007 at 11:23:57AM +0100, Jean Delvare wrote: > There's no driver to write (i2c-gpio is the driver). Instead, the > scx200 platform needs to implement the standard GPIO API. I don't think > that it has happened yet, and last time this was discussed, someone > (can't remember who, sorry), complained that the GPIO API "sucked" and > that the scx200 platform would not be updated to use it. I didn't buy > the claim due to a lack of argumentation and the fact that the GPIO > infrastructure seems to work well enough for many other platforms.
There's actually a number of people who aren't thrilled by the concept of a GPIO API. The current API is quite limiting in that it isn't actually a "generic" GPIO API - you can't address GPIOs on a GPIO expander with it for instance. Some of those issues are in the process of being resolved, but I suspect that this is a classic case where you can not satisfy everyone. There'll always be people who refuse to use whatever GPIO API. > As far as I can see, the ixp2000 platform also doesn't implement the > standard GPIO API yet, so of the 3 drivers that are about to be > removed, only i2c-ixp4xx can be removed without functionality loss at > the moment. Lennert, Russell, are there any plans to convert the > ixp2000 platform to use the generic GPIO layer? It's really for Lennert to comment on; while you may consider I'm the overall ARM maintainer, that doesn't mean that I have access to the entire set of ARM hardware. Bit like expecting Linus to write working drivers for SH4 without ever having had a SH4 platform... ;) > Maybe I shouldn't have added this entry in feature-removal-schedule.txt > in the first place: these drivers should ideally be dropped in favor of > i2c-gpio, but it can only happen for platforms that implement the > standard GPIO API. ... especially as those who need to comment on it don't get to see Adrian's patches to remove them. I think it's quite wrong to mark something "obsolete" and scheduling it for removal unless there's an actual functioning replacement. -- Russell King Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/ maintainer of: - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
