Device tree aware EMAC driver

[Josh Boyer]

On Tue, 7 Aug 2007 16:22:31 +1000
David Gibson <david at gibson.dropbear.id.au> wrote:

> Based on BenH's earlier work, this is a new version of the EMAC driver
> for the built-in ethernet found on PowerPC 4xx embedded CPUs.  The
> same ASIC is also found in the Axon bridge chip.  This new version is
> designed to work in the arch/powerpc tree, using the device tree to
> probe the device, rather than the old and ugly arch/ppc OCP layer.
> 
> This driver is designed to sit alongside the old driver (it lies in
> drivers/net/ibm_emac and this one in drivers/net/ibm_newemac).  The
> old driver is left in place to support arch/ppc until arch/ppc itself
> reaches its final demise (not too long now, with luck).
> 
> This driver still has a number of things that could do with cleaning
> up, but I think they can be fixed up after merging.  Specifically:
> 	- Should be adjusted to properly use the dma mapping API.
> Axon needs this.
> 	- Probe logic needs reworking, in conjuction with the general
> probing code for of_platform devices.  The dependencies here between
> EMAC, MAL, ZMII etc. make this complicated.  At present, it usually
> works, because we initialize and register the sub-drivers before the
> EMAC driver itself, and (being in driver code) runs after the devices
> themselves have been instantiated from the device tree.
> 
> Signed-off-by: David Gibson <david at gibson.dropbear.id.au>

Hm.  Should this go through Jeff Garzik or Paul?  If it's the latter,
I'll pull this into my git tree soon.

josh