> Mark Brown: > > On Wed, Nov 04, 2009 at 08:15:02PM +0530, Gadiyar, Anand wrote: > > > > > So, if a board does not need a regulator at all, then the APIs do > nothing? > > > > If the kernel is built without regulator API support then the get, > > release, enable and disable functions are stubbed out to always report > > success. If the kernel has been built with regulator support then > > generally a fixed voltage regulator should be defined by the board. The > > expectation is that if the regulator API is of no use on a board since > > there are no regulators set up then it'll be disabled in Kconfig. > > > > I meant: for the same driver (say EHCI in this case) on two different > boards, if one of them needs a particular regulator (say the 1v8 from > TWL4030) > and the other needs none at all (but needs the regulator API in general > for > other devices on the board), then what would happen? I think we can add a check for supply name in EHCI driver, if its valid then we will call regulator_get()/enable() but if it's NULL then don't do anything. So the boards which don't use any regulator they can pass a NULL to supply name. -Ajay -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
