ARM: remove linkup-l1110.h

No file includes this header. Nothing seems interested in the things
this header provides. It appears that it has never been included since
at least v2.6.12-rc2. It can safely be removed.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Acked-by: Dmitry Artamonow <mad_soft@inbox.ru>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
ARM: remove old SA-1111.h

All (in tree) users of old mach/SA-1111.h were already updated to
include asm/hardware/sa1111.h in v2.6.12-rc2. The old header can safely
be removed now.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
ARM: pxa: remove eseries.h

Commit e478fe4cd50b86e95fadc415438b63fa94060b7d ("[ARM] pxa: merge all
eseries board code into eseries.c") removed all six files that included
eseries.h. Everything that this header provides is now either local to
eseries.c or entirely unused. It was apparently just an oversight to
keep this header. This header can safely be removed.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
ARM: sa1100: remove lart.h

No file includes this header. It has never been included since at least
v2.6.12-rc2. It can safely be removed.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
mtd: move mtd_read_oob() definition out of mtd.h

mtd_read_oob() will be expanded a little, so don't leave it in the header
as a static inline function.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
mtd: mtdoops: refactor loop

We can clean up the loop logic a bit, here. This refactoring was enabled
in part by:

 Commit bb4a09866 [mtdoops: clean-up new MTD API usage]

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
mtd: cafe_nand: spelling mistake

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
mtd: nand: gpmi: need to use {read,write}_oob_raw

This patch is simply an added warning in the comments. Ideally, this patch
need not be merged, but rather, a developer will write a proper solution
that can use the ecc.read_oob_raw and ecc.write_oob_raw interfaces.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Cc: Huang Shijie <b32955@freescale.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
mtd: sh_flctl: Add missing iounmap()

Add the unmapping for the error case and for the driver removal.

Signed-off-by: Bastian Hecht <hechtb@gmail.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
mtd: sh_flctl: Add support for error IRQ

When the data transfer between the controller and the NAND chip fails,
we now get notified.

Signed-off-by: Bastian Hecht <hechtb@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
mtd: sh_flctl: Use different OOB layout

The flctl hardware has changed and a new OOB layout must be adapted for
2KiB page size NAND chips when using hardware ECC.
The related bit fields ECCPOS[0-2] are gone — the bits are marked as
reserved now in the datasheet. As there are no official users of the
hardware ECC so far, they are completely removed.

Signed-off-by: Bastian Hecht <hechtb@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
mtd: sh_flctl: Fix hardware ECC behaviour

The flctl uses 10 bytes ECC data for every 512 bytes sector. This patch
makes the controller write all 40 bytes instead of 10 bytes only.

Signed-off-by: Bastian Hecht <hechtb@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
mtd: sh_flctl: Simplify the hardware ecc page read/write

As the equation mtd->writesize == eccsteps * eccsize holds, we can
simplify the code. The second loop of the 1st hunk is never entered,
so we delete it.

Signed-off-by: Bastian Hecht <hechtb@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
mtd: sh_flctl: Group sector accesses into a single transfer

When we use hardware ecc, the flctl is run in so-called "sector access
mode". We can bundle 4 sector accesses when using 2KiB page sizes to read
a whole page at once and speed up things.

Signed-off-by: Bastian Hecht <hechtb@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
mtd: sh_flctl: Restructure the hardware ECC handling

There are multiple reasons for a rewrite:
 - a race exists: when _4ECCEND is set, _4ECCFA may become true too
   meanwhile, which is lost and a non-correctable error is treated as
   correctable.
 - the ECC statistics don't get properly propagated to the base code.
 - empty pages would get marked as corrupted

The rewrite resolves the issues and I hope it gives a more explicit
code flow structure.

Signed-off-by: Bastian Hecht <hechtb@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
mtd: sh_flctl: Use user oob data in hardware ECC mode

In hardware ecc mode, the flctl now writes and reads the oob data
provided by the user. Additionally the ECC is now returned in normal
page reads, not only when using the explicit NAND_CMD_READOOB command.

Signed-off-by: Bastian Hecht <hechtb@gmail.com>
Acked-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
mtd: tests: use random32 instead of home-brewed generator

This is a clean-up patch which removes the own pseudo-random numbers generator
from the speed- and stress-tests and makes them use the 'random32()' generator
instead.

[dwmw2: Merge later fix for negative offsets]

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
mtd: nand: add Eon Silicon Solutions manufacturer ID

Eon's new NAND flash: EN27LN1G08.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
mtd: nand: remove NAND_BBT_SEARCH option

This option was never used and isn't currently used.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
mtd: nand: kill NAND_NO_READRDY

According to its documentation, the NAND_NO_READRDY option is always used
when autoincrement is not supported. Autoincrement support was recently
dropped, so we can drop this options as well (defaulting to "no read ready
check").

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>