[PATCH 6/7] omap: iommu: remove unused exported API

[Ohad Ben-Cohen]

Hi Hiroshi,

On Thu, Aug 18, 2011 at 1:49 PM, Hiroshi DOYU <Hiroshi.DOYU at nokia.com> wrote:
>> -extern void iommu_set_twl(struct iommu *obj, bool on);
>
> This function was introduced by "Hari Kanigeri" for some OMAP4 case,
> which is only using TLB, not H/W table walk.

We discussed that internally, and concluded it's not needed anymore. I
still kept the underlying plumbing mechanism, just in case it'd still
be needed for some hw quirks in the future, but removed the interface
(in case a future hw revision will seem to need it, it would probably
make more sense to invoke the relevant mechanism from the underlying
layers rather than from a higher layer).

>> -extern int iommu_set_da_range(struct iommu *obj, u32 start, u32 end);
>
> This function was introduced by "David Cohen" to specify the available
> ISP virtual address range.

Not sure if David or anyone is using this, but if someone is, it must
be out-of-tree.

In that case, even if it is needed, adding a mainline user for this
function at this point will most likely not be accepted anymore, and
instead, one will be suggested to use (and extend as necessary) the
DMA-API.

Thanks,
Ohad.