The info structure for out of band data was copied into
the mtd structure. Make it a pointer and remove the ability
to set it from userspace. The position of ecc bytes is
defined by the hardware and should not be changed by software.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

The platform structure was lacking an oobinfo field.
The NDFC driver had some remains from another tree.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Modularize the write function and reorganaize the internal buffer
management. Remove obsolete chip options and fixup all affected
users.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Split the core of the read function out and implement
seperate handling functions for software and hardware
ECC.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Add read/write function pointers to struct nand_ecc_ctrl to
prepare the modulaization of nand_read/write functions. The
current implementation handles every type of ecc mode
software/hardware and all kinds of strange ecc placement
schemes in one switch/if construct. Thats too complex to
maintain and too inflexible to expand. Modularization will
also shorten the code pathes of the read/write functions.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

FLASH - especially NAND FLASH - will become less reliable
and bit flips more likely. Add an ECC statistics struct
to struct mtd_info to keep track of this.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

The nand driver has a superflous read ready / command
delay in the read functions. This was added to handle
chips which have an automatic read forward. Newer
chips do not have this functionality anymore. Add this
option to avoid the delay / I/O operation. Mark all
large page chips with the new option flag.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

The previous change of the command / hardware control allows to
remove the write_byte/word functions completely, as their only
user were nand_command and nand_command_lp.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

The hwcontrol function enforced a step by step state machine
for any kind of hardware chip access. Let the hardware driver
know which control bits are set and inform it about a change
of the control lines. Let the hardware driver write out the
command and address bytes directly. This gives a peformance
advantage for address bus controlled chips and simplifies the
quirks in the hardware drivers.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

MTD clients are agnostic of FLASH which needs ECC suppport.
Remove the functions and fixup the callers.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

These functions were never implemented and added only bloat to
partition and concat code.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

NAND writev(_ecc) support is not longer necessary. Remove it.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Fix the broken prototype
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

First step of modularizing ECC support.
- Move ECC related functionality into a seperate embedded data structure
- Get rid of the hardware dependend constants to simplify new ECC models
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

The NAND driver used a mix of unsigned char, u_char amd uint8_t
data types. Consolidate to uint8_t usage
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

NDFC NAND Flash controller is embedded in PPC EP44x SoCs.
Add platform driver based support.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Add the data structures necessary to provide platform device support
for NAND
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Replace the chip lock by a the controller lock. For simple drivers a
dummy controller structure is created by the scan code.
This simplifies the locking algorithm in nand_get/release_chip().
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

At least two flashes exists that have the concept of a minimum write unit,
similar to NAND pages, but no other NAND characteristics.  Therefore, rename
the minimum write unit to "writesize" for all flashes, including NAND.
Signed-off-by: NJoern Engel <joern@wh.fh-wedel.de>

... and also fix the multiple inclusion guard so it actually _works_
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

One Block of the NAND Flash Array memory is reserved as
a One-Time Programmable Block memory area.
Also, 1st Block of NAND Flash Array can be used as OTP.

The OTP block can be read, programmed and locked using the same
operations as any other NAND Flash Array memory block.
OTP block cannot be erased.

OTP block is fully-guaranteed to be a valid block.
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>

Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>

After dwmw2 let me know it ought to be done, I rewrote the physmap map
driver to be a platform driver.  I know zilch about the driver model,
so I probably botched it in some way, but I've done some tests on an
ixp23xx board which uses physmap, and it all seems to work.

In order to not break existing physmap users, I've added some compat
code that will instantiate a platform device iff CONFIG_MTD_PHYSMAP_LEN
is defined and != 0.  Also, I've changed the default value for
CONFIG_MTD_PHYSMAP_LEN to zero, so that people who inadvertently
compile in physmap (or new, platform-style, users of physmap) don't get
burned.

This works pretty well -- the new physmap driver is a drop-in replacement
for the old one, and works on said ixp23xx board without any code changes
needed.  (This should hold as long as users don't touch 'physmap_map'
directly.)

Once all physmap users have been converted to instantiate their own
platform devices, the compat code can go.  (Or we decide that we can
change all the in-tree users at the same time, and never merge the
compat code.)
Signed-off-by: NLennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

- chips/sharp.c: make two needlessly global functions static

- move some declarations to a header file where they belong to
Signed-off-by: NAdrian Bunk <bunk@stusta.de>
Acked-by: NDavid Woodhouse <dwmw2@infradead.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.
Signed-off-by: NIngo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Acked-by: NDavid Woodhouse <dwmw2@infradead.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

A bunch of asm/bug.h includes are both not needed (since it will get
pulled anyway) and bogus (since they are done too early).  Removed.
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

This (and the three subsequent patches) is working well on OMAP H4 with
2.6.15-rc4 kernel and passes the LTP fs test.
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Recent models of Intel/Sharp and Spansion CFI flash now have significant
bits in the upper byte of device ID codes, read via what Spansion calls
"autoselect" and Intel calls "read device identifier".  Currently these
values are truncated to the low 8 bits in the mtd data structures, as
all CFI read query info has previously been read one byte at a time.
Add a new method for reading 16-bit info, currently just manufacturer
and device codes; datasheets hint at future uses for upper bytes in
other fields.
Signed-off-by: NTodd Poynor <tpoynor@mvista.com>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

This patch removes almost all inclusions of linux/version.h.  The 3
#defines are unused in most of the touched files.

A few drivers use the simple KERNEL_VERSION(a,b,c) macro, which is
unfortunatly in linux/version.h.

There are also lots of #ifdef for long obsolete kernels, this was not
touched.  In a few places, the linux/version.h include was move to where
the LINUX_VERSION_CODE was used.

quilt vi `find * -type f -name "*.[ch]"|xargs grep -El '(UTS_RELEASE|LINUX_VERSION_CODE|KERNEL_VERSION|linux/version.h)'|grep -Ev '(/(boot|coda|drm)/|~$)'`

search pattern:
/UTS_RELEASE\|LINUX_VERSION_CODE\|KERNEL_VERSION\|linux\/\(utsname\|version\).h
Signed-off-by: NOlaf Hering <olh@suse.de>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

If they get inlined into non __xipram functions we're screwed.
Signed-off-by: NNicolas Pitre <nico@cam.org>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Add density mask for better support of DDP chips.
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Add suspend/resume
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Simple bad block table source and header files
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

The changes introduced allow to suspend/resume NAND flash.
A new state (FL_PM_SUSPENDED) is introduced, as well as
routines for mtd->suspend and mtd->resume to put the flash in
suspended state from software pov.
Signed-off-by: NVitaly Wool <vwool@ru.mvista.com>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

- Remove unused block, page parameters
- Add constant instead of runtime value
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

- Update OMAP OneNAND mapping file using device driver model
- Remove board specific macro and values.
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>