[GIT PULL] omap changes for v2.6.39 merge window
broonie at opensource.wolfsonmicro.com
Fri Apr 1 22:59:02 EDT 2011
On Fri, Apr 01, 2011 at 03:54:47PM -0400, Nicolas Pitre wrote:
> 1) GPIO drivers
> As Linus observed, in the majority of the cases GPIOs are accessed
> through simple memory-mapped registers. Some have absolute state
> registers, the others have separate clear/set registers. Suffice to
> create two generic GPIO drivers each covering those two common cases,
> and those generic drivers would simply register with the higher level
> gpiolib code, and all the board code would have to do is to provide
> the data for those GPIOs (register offsets, number of GPIOs, etc.).
> Whether this data eventually comes from DT is an orthogonal issue.
For this case we actually already have the basic_mmio_gpio driver in
tree, we should be pushing for wider usage of that.
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