On Wed, 2012-08-01 at 14:31 +0000, Arnd Bergmann wrote: 

On Wednesday 01 August 2012, wwang wrote:

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于 2012年07月31日 19:23, Arnd Bergmann 写道:

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You posted the sdmmc host driver and the pci card reader driver.
I assume that the USB card reader and the memstick host
will also get posted at some point. Do you have a timeframe
for those?

I will submit my memstick host driver around two months later, and
submit USB part at the end of this year.

ok.

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The hardware seems to also support xd/smartmedia. Do you have
plans to add those? I think we have some code in drivers/mfd
that acts as an abstraction layer for these, given that the
host has to do the wear leveling there too.

Yes, xD is still in our plan. But because the user population of xD/SM
is so small, we put the priority of writing xD host driver in a relevant
low level.
Maybe we will submit this driver in the next year.

Ok. When you get to that, I think you should use the code
from drivers/mtd/nand/sm_common.c, but it's better to confirm
that with the MTD maintainers first.

Just note that this file doesn't have much stuff as it turned out
that xD card readers and cards are just raw NAND.
Except that large xD cards, still use small block size, and somewhat
different IDs, thus I placed them in this file.

You just need to write a NAND driver exposing raw flash, and my sm_ftl
will take care of wear leveling and everything else.


If any questions, bug-reports, just notes, I glad to hear about this.
Best regards,
Maxim Levitsky