Re: [patch/rfc 2.6.19-rc5] arch-neutral GPIO calls

[Bill Gatliff]

David Brownell wrote:

> A fine example of two platform-specific notions.  First, that GPIO signals
> are muxed in that way ... they could easily have dedicated pins!!  Second,
> that there's even a one-to-one association between pins and GPIOs ... I'll
> repeat the previous example of OMAP1, where certain GPIOs could come out on
> any of several pins.  And where some pins can be muxed to work with more
> than one GPIO (but only one at a time, of course).  Clearly, neither pin
> refcounting nor GPIO claiming can be sufficient to prevent such problems ...
>  

So, you're saying that if GPIOA1 can come out on pins ZZ1 and BB6, then 
there would be two unique "GPIO numbers", one for each possibility?


b.g.

--
Bill Gatliff
bgat@xxxxxxxxxxxxxxx

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/