Commit Graph

236 Commits

Author SHA1 Message Date
Roman Tereshonkov ac80dac00f mtd: onenand: implement cache program feature for 4KiB page onenand
Implement cache program feature for 4KiB page onenand.
This feature improves the write data performance.
The observed 128KiB data program speed change is
from 8827KiB/s to 14156 KiB/s when the feature is enabled.

Signed-off-by: Roman Tereshonkov <roman.tereshonkov@nokia.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-12-03 16:28:41 +00:00
Roman Tereshonkov d19d7b46d2 mtd: onenand: fix omap2 code to handle cache program feature
Some fixes are introduced into omap2 code to handle errors when
cache program feature is used.

Signed-off-by: Roman Tereshonkov <roman.tereshonkov@nokia.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-12-03 16:28:13 +00:00
Kyungmin Park 08b3af3092 mtd: OneNAND: Fix page offset handling at 2KiB pagesize
When use the 2KiB pagesize, it should be set the correct page offset.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-12-03 16:27:18 +00:00
Kyungmin Park 2316d3bc95 mtd: OneNAND: S5PC110: Fix double call suspend & resume function
The suspend & resume called from mtd core. So no need to call at driver.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-25 01:36:14 +01:00
Roman Tereshonkov edb44b9b9c mtd: onenand: fix 4KiB page onenand chip recognition
For 4Gib non-DDP chip it does not follow that it is always 4KiB page chip.
The number of data buffers is checked and if it is equal to 1
we suppose that it is 4KiB page onenand chip.

Signed-off-by: Roman Tereshonkov <roman.tereshonkov@nokia.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-25 01:13:20 +01:00
Kyungmin Park 861fae1818 mtd: OneNAND: S5PC210 OneNAND support
S5PC210 has the same OneNAND controller as S5PC110

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-25 00:52:43 +01:00
Kyungmin Park e23abf4b77 mtd: OneNAND: S5PC110: Implement DMA interrupt method
Implement DMA interrupt method. previous time it polls the DMA status.
It can reduce the CPU power but decrease the performance a little.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-25 00:52:26 +01:00
Kyungmin Park dcf08227e9 mtd: OneNAND: S5PC110: Fix wrong DMA handling when HIGHMEM
When use HIGHMEM, dma_map_single doesn't get the proper DMA address.
So use the dma_map_page in this case.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-25 00:51:33 +01:00
Kyungmin Park aa6d1c0e15 mtd: OneNAND: S5PC100: Only S5PC110 use the command map method
After S5PC110 use the generic method for OneNAND.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-25 00:51:01 +01:00
Rohit Hassan Sathyanarayan c76268021e mtd: MLC device check in OneNAND driver
The MLC NAND Flash differs from the SLC NAND flash in functioning
and the cell structure. Therefore we are considering it as a
different Flash type.

Signed-off-by: Rohit H.S <rohit.hs@samsung.com>
Signed-off-by: Raghav Gupta <gupta.raghav@samsung.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-25 00:50:28 +01:00
Kyungmin Park ebe8a642f5 mtd: OneNAND: S5PC110: Add timeout to prevent the endless loop
There's no case timeout but add it for some H/W problem or
wrong codes implementation

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-25 00:50:09 +01:00
Kyungmin Park 344955fb9c mtd: OneNAND: Remove unused cmd_map at s5pc110
S5PC110 OneNAND controller use the generic functions provided from onenand_base.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-24 23:44:52 +01:00
Kyungmin Park 53d1e137d5 mtd: OneNAND: Fix loop hang when DMA error at Samsung SoCs
When DMA error occurs. it's loop hang since it can't exit the loop.
and it's the right DMA handling code as Spec.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-09-13 08:49:45 +01:00
Kyungmin Park 9aba97ad00 mtd: OneNAND: Fix 2KiB pagesize handling at Samsung SoCs
Wrong assumption bufferram can be switched between BufferRAM0 and BufferRAM1

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-09-13 08:49:18 +01:00
David Woodhouse 6ae0185fe2 mtd: Remove obsolete <mtd/compatmac.h> include
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-08-08 21:19:42 +01:00
Kyungmin Park 7b0507eb69 mtd: OneNAND: Samsung SoCs use own chip_probe function
Samsung SoCs use own chip_probe function.
Don't touch the memory configuration at probe time.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-08-04 10:51:49 +01:00
Kyungmin Park ad0d363b8f mtd: OneNAND: Introduce chip_probe function
Samsung SoCs use the own OneNAND controler and detect OneNAND chip at power on.
To use this feature, introduce the chip_probe function.

Also remove workaround for Samsung SoCs.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-08-04 10:51:47 +01:00
Rohit Hassan Sathyanarayan 42b0aab1cc mtd: onenand:fix for page addr calculation based on device type
Sending the patch for page address calculation based on device type. This resolves the
OneNAND DDP device read problem as pointed by Enric.
http://lists.infradead.org/pipermail/linux-mtd/2010-July/030920.html

Signed-off-by: Rohit HS <rohit.hs@samsung.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-08-02 09:10:09 +01:00
Kyle Spaans 8c1a1158c9 mtd: remove redundant dependency checks in Kconfig files
Look for dependency checks for "FOO" when inside of an "if FOO" block and remove them.

Signed-off-by: Kyle Spaans <kspaans@uwaterloo.ca>
Reviewed-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-08-02 09:01:42 +01:00
Kyungmin Park 46f3e88bd9 mtd: add Samsung SoC OneNAND driver
This patch adds a driver for OneNAND controller on Samsung SoCs.
Following SoCs are supported: S3C6400, S3C6410, S5PC100 and S5PC110.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-05-14 01:51:20 +01:00
Kyungmin Park c37cb56fb1 mtd: onenand: add workaround for SYNC_WRITE mode
Some chips fails to identify properly when SYNC_WRITE mode is enabled
(the example is OneNAND on S5PC110 SoC). This patch adds a workaround
for such chips.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-05-14 01:50:21 +01:00
Kyungmin Park 3328dc3159 mtd: onenand: add new callback for bufferram read
This patch adds a new callback for the underlying drivers, which is
called instead of accessing the buffer ram directly. This callback will
be used by Samsung OneNAND driver to implement DMA transfers on S5PC110
SoC.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-05-14 01:50:04 +01:00
Kyungmin Park 4a8ce0b030 mtd: onenand: allocate verify buffer in the core
This patch extends OneNAND core code with support for OneNAND verify
write check. This is done by allocating the buffer for verify read
directly from the core code.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-05-14 01:49:48 +01:00
Kyungmin Park 6a88c47bd5 mtd: onenand: add support for chips with 4KiB page size
This patch adds support for OneNAND chips that have 4KiB page size.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-05-14 01:49:21 +01:00
David Woodhouse 0ae28a35bc Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:
	drivers/mtd/mtdcore.c

Pull in the bdi fixes and ARM platform changes that other outstanding
patches depend on.
2010-05-10 14:32:46 +01:00
Mika Westerberg 4a70b7d395 mtd: OneNAND: OMAP2/3: unmap correct DMA buffer
Functions omap2_onenand_write_bufferram() and omap3_onenand_write_bufferram()
map the write buffer and store the returned handle in variable dma_src. However,
when DMA unmap is done, variable dma_dst is used instead of the correct dma_src.

This patch fixes them to use the correct DMA buffer.

Signed-off-by: Mika Westerberg <ext-mika.1.westerberg@nokia.com>
Tested-by: Arnaud Ebalard <arno@natisbad.org>
Acked-by: Adrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-05-10 14:17:05 +01:00
Tejun Heo 5a0e3ad6af include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files.  percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed.  Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability.  As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

  http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
  only the necessary includes are there.  ie. if only gfp is used,
  gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
  blocks and try to put the new include such that its order conforms
  to its surrounding.  It's put in the include block which contains
  core kernel includes, in the same order that the rest are ordered -
  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
  doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
  because the file doesn't have fitting include block), it prints out
  an error message indicating which .h file needs to be added to the
  file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
   over 4000 files, deleting around 700 includes and adding ~480 gfp.h
   and ~3000 slab.h inclusions.  The script emitted errors for ~400
   files.

2. Each error was manually checked.  Some didn't need the inclusion,
   some needed manual addition while adding it to implementation .h or
   embedding .c file was more appropriate for others.  This step added
   inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
   from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
   e.g. lib/decompress_*.c used malloc/free() wrappers around slab
   APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
   editing them as sprinkling gfp.h and slab.h inclusions around .h
   files could easily lead to inclusion dependency hell.  Most gfp.h
   inclusion directives were ignored as stuff from gfp.h was usually
   wildly available and often used in preprocessor macros.  Each
   slab.h inclusion directive was examined and added manually as
   necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
   distributed build env didn't work with gcov compiles) and a few
   more options had to be turned off depending on archs to make things
   build (like ipr on powerpc/64 which failed due to missing writeq).

   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
   * powerpc and powerpc64 SMP allmodconfig
   * sparc and sparc64 SMP allmodconfig
   * ia64 SMP allmodconfig
   * s390 SMP allmodconfig
   * alpha SMP allmodconfig
   * um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
   a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-30 22:02:32 +09:00
Aaro Koskinen 932f5d21cc mtd: OneNAND: do not use DMA if oops in progress
Otherwise we may hang if we are called from panic() through mtdoops.

Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26 13:22:01 +00:00
Linus Torvalds 60d9aa758c Merge git://git.infradead.org/mtd-2.6
* git://git.infradead.org/mtd-2.6: (90 commits)
  jffs2: Fix long-standing bug with symlink garbage collection.
  mtd: OneNAND: Fix test of unsigned in onenand_otp_walk()
  mtd: cfi_cmdset_0002, fix lock imbalance
  Revert "mtd: move mxcnd_remove to .exit.text"
  mtd: m25p80: add support for Macronix MX25L4005A
  kmsg_dump: fix build for CONFIG_PRINTK=n
  mtd: nandsim: add support for 4KiB pages
  mtd: mtdoops: refactor as a kmsg_dumper
  mtd: mtdoops: make record size configurable
  mtd: mtdoops: limit the maximum mtd partition size
  mtd: mtdoops: keep track of used/unused pages in an array
  mtd: mtdoops: several minor cleanups
  core: Add kernel message dumper to call on oopses and panics
  mtd: add ARM pismo support
  mtd: pxa3xx_nand: Fix PIO data transfer
  mtd: nand: fix multi-chip suspend problem
  mtd: add support for switching old SST chips into QRY mode
  mtd: fix M29W800D dev_id and uaddr
  mtd: don't use PF_MEMALLOC
  mtd: Add bad block table overrides to Davinci NAND driver
  ...

Fixed up conflicts (mostly trivial) in
	drivers/mtd/devices/m25p80.c
	drivers/mtd/maps/pcmciamtd.c
	drivers/mtd/nand/pxa3xx_nand.c
	kernel/printk.c
2009-12-16 10:23:43 -08:00
Roel Kluin 0a032a4df6 mtd: OneNAND: Fix test of unsigned in onenand_otp_walk()
mtd->writesize and len are unsigned so the test does not work.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-12-16 03:26:33 +00:00
Linus Torvalds 4ef58d4e2a Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (42 commits)
  tree-wide: fix misspelling of "definition" in comments
  reiserfs: fix misspelling of "journaled"
  doc: Fix a typo in slub.txt.
  inotify: remove superfluous return code check
  hdlc: spelling fix in find_pvc() comment
  doc: fix regulator docs cut-and-pasteism
  mtd: Fix comment in Kconfig
  doc: Fix IRQ chip docs
  tree-wide: fix assorted typos all over the place
  drivers/ata/libata-sff.c: comment spelling fixes
  fix typos/grammos in Documentation/edac.txt
  sysctl: add missing comments
  fs/debugfs/inode.c: fix comment typos
  sgivwfb: Make use of ARRAY_SIZE.
  sky2: fix sky2_link_down copy/paste comment error
  tree-wide: fix typos "couter" -> "counter"
  tree-wide: fix typos "offest" -> "offset"
  fix kerneldoc for set_irq_msi()
  spidev: fix double "of of" in comment
  comment typo fix: sybsystem -> subsystem
  ...
2009-12-09 19:43:33 -08:00
Mika Korhonen f369c7ec94 mtd: OneNAND: fix double printing of function name
Signed-off-by: Mika Korhonen <ext-mika.2.korhonen@nokia.com>
Reviewed-by: Adrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-11-30 09:43:54 +00:00
Mika Korhonen 72073027ee mtd: OneNAND: multiblock erase support
Add support for multiblock erase command. OneNANDs (excluding Flex-OneNAND)
are capable of simultaneous erase of up to 64 eraseblocks which is much faster.

This changes the erase requests for regions covering multiple eraseblocks
to be performed using multiblock erase.

Signed-off-by: Mika Korhonen <ext-mika.2.korhonen@nokia.com>
Reviewed-by: Adrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-11-30 09:43:18 +00:00
Mika Korhonen 73885aeaca mtd: OneNAND: move erase method to a separate function
Separate the actual execution of erase to a new function:
onenand_block_by_block_erase(). This is done in preparation for
the multiblock erase support.

Signed-off-by: Mika Korhonen <ext-mika.2.korhonen@nokia.com>
Reviewed-by: Adrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-11-30 09:42:55 +00:00
Amul Kumar Saha 3cf602532c mtd: OneNAND OTP support rework
What is OTP in OneNAND?
The device includes,
1. one block-sized OTP (One Time Programmable) area and
2. user-controlled 1st block OTP(Block 0)
that can be used to increase system security or to provide
identification capabilities.

What is done?
In OneNAND, one block of the NAND Array is set aside as an OTP
memory area, and 1st Block (Block 0) can be used as OTP area.
This area, available to the user, can be configured and locked
with secured user information. The OTP block can be read,
programmed and locked using the same operations as any other NAND
Flash Array memory block. After issuing an OTP-Lock, OTP block
cannot be erased. OTP block is fully-guaranteed to be a good
block.

Why it is done?
Locking the 1st Block OTP has the effect of a 'Write-protect' to
guard against accidental re-programming of data stored in the 1st
block and OTP Block.

Which problem it solves?
OTP support is provided in the existing implementation of
OneNAND/Flex-OneNAND driver, but it is not working with OneNAND
devices. Have observed the following in current OTP OneNAND Implmentation,
1. DataSheet specific sequence to lock the OTP Area is not followed.
2. Certain functions are quiet generic to cope with OTP specific activity.
This patch re-implements OTP support for OneNAND device.

How it is done?
For all blocks, 8th word is available to the user.
However, in case of OTP Block, 8th word of sector 0, page 0 is reserved as
OTP Locking Bit area. Therefore, in case of OTP Block, user usage on this
area is prohibited. Condition specific values are entered in the 8th word,
sector0, page 0 of the OTP block during the process of issuing an OTP-Lock.
The possible conditions are:
1. Only 1st Block Lock
2. Only OTP Block Lock
3. Lock both the 1st Block and the OTP Block

What Other feature additions have been done in this patch?
This patch adds feature for:
1. Only 1st Block Lock
2. Lock both the 1st Block and the OTP Blocks

Re-implemented OTP support for OneNAND
Added following features to OneNAND
	1. Lock only 1st Block in OneNAND
	2. Lock BOTH 1st Block and OTP Block in OneNAND

[comments were slightly tweaked by Artem]

Signed-off-by: Amul Kumar Saha <amul.saha@samsung.com>
Reviewed-by: Adrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-11-30 09:31:13 +00:00
Michael Roth fa3012318b Kconfig: Remove useless and sometimes wrong comments
Additionally, some excessive newlines removed.

Signed-off-by: Michael Roth <mroth@nessie.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-11-09 09:40:56 +01:00
Tony Lindgren ce491cf854 omap: headers: Move remaining headers from include/mach to include/plat
Move the remaining headers under plat-omap/include/mach
to plat-omap/include/plat. Also search and replace the
files using these headers to include using the right path.

This was done with:

#!/bin/bash
mach_dir_old="arch/arm/plat-omap/include/mach"
plat_dir_new="arch/arm/plat-omap/include/plat"
headers=$(cd $mach_dir_old && ls *.h)
omap_dirs="arch/arm/*omap*/ \
drivers/video/omap \
sound/soc/omap"
other_files="drivers/leds/leds-ams-delta.c \
drivers/mfd/menelaus.c \
drivers/mfd/twl4030-core.c \
drivers/mtd/nand/ams-delta.c"

for header in $headers; do
	old="#include <mach\/$header"
	new="#include <plat\/$header"
	for dir in $omap_dirs; do
		find $dir -type f -name \*.[chS] | \
			xargs sed -i "s/$old/$new/"
	done
	find drivers/ -type f -name \*omap*.[chS] | \
		xargs sed -i "s/$old/$new/"
	for file in $other_files; do
		sed -i "s/$old/$new/" $file
	done
done

for header in $(ls $mach_dir_old/*.h); do
	git mv $header $plat_dir_new/
done

Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-20 09:40:47 -07:00
David Woodhouse 8032747e76 mtd: make onenand_base.c compile again
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-10-05 08:30:04 +01:00
Amul Kumar Saha 297758f8fc mtd: Standardising prints in onenand_base.c
This patch resolves all the prints present in onenand_base.c
Primarily, it replaces the hard-coded function names in the prints,
and makes use of __func__.

Signed-off-by: Amul Kumar Saha <amul.saha@samsung.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-10-05 07:53:39 +01:00
Magnus Damm 778dbcc1eb mtd: onenand: make onenand/generic.c more generic
Remove the ARM dependency from the generic "onenand" platform device
driver.  This change makes the driver useful for other architectures as
well.  Needed for the SuperH kfr2r09 board.

Apart from the obvious Kconfig bits, the most important change is the move
away from ARM specific includes and platform data.  Together with this
change the only in-tree board code gets an update, and the driver name is
also changed gracefully break potential out of tree drivers.

The driver is also updated to allow NULL as platform data together with a
few changes to make use of resource_size() and dev_name().

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Kyungmin Park <kmpark@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-19 11:07:50 -07:00
Paul Mundt 0acfe530a2 mtd: onenand: select MTD_PARTITIONS
All of the onenand drivers depend on mtd partition support being compiled
in, so just select it. Fixes up build breakage:

drivers/built-in.o: In function `generic_onenand_remove':
generic.c:(.devexit.text+0x80): undefined reference to `del_mtd_partitions'

Reported-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-04 09:40:37 +01:00
Mika Korhonen 492e150143 mtd: OneNAND: spelling fixes
Signed-off-by: Mika Korhonen <mika.j.korhonen@gmail.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-04 09:30:17 +01:00
Mika Korhonen 3cae1cc149 mtd: OneNAND: OMAP2/3: free GPMC CS on module removal
GPMC CS was not freed in omap2_onenand_remove() preventing the module
from reloading after removal.

Signed-off-by: Mika Korhonen <ext-mika.2.korhonen@nokia.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-08-03 14:22:16 +01:00
Mika Korhonen 00acf4a807 mtd: OneNAND: fix incorrect bufferram offset
Fixes the case where CONFIG_MTD_ONENAND_2X_PROGRAM is set and
the real page size differs from mtd_info.writesize.

Signed-off-by: Mika Korhonen <mika.j.korhonen@gmail.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-08-03 14:21:58 +01:00
Linus Torvalds ac1b7c378e Merge git://git.infradead.org/mtd-2.6
* git://git.infradead.org/mtd-2.6: (63 commits)
  mtd: OneNAND: Allow setting of boundary information when built as module
  jffs2: leaking jffs2_summary in function jffs2_scan_medium
  mtd: nand: Fix memory leak on txx9ndfmc probe failure.
  mtd: orion_nand: use burst reads with double word accesses
  mtd/nand: s3c6400 support for s3c2410 driver
  [MTD] [NAND] S3C2410: Use DIV_ROUND_UP
  [MTD] [NAND] S3C2410: Deal with unaligned lengths in S3C2440 buffer read/write
  [MTD] [NAND] S3C2410: Allow the machine code to get the BBT table from NAND
  [MTD] [NAND] S3C2410: Added a kerneldoc for s3c2410_nand_set
  mtd: physmap_of: Add multiple regions and concatenation support
  mtd: nand: max_retries off by one in mxc_nand
  mtd: nand: s3c2410_nand_setrate(): use correct macros for 2412/2440
  mtd: onenand: add bbt_wait & unlock_all as replaceable for some platform
  mtd: Flex-OneNAND support
  mtd: nand: add OMAP2/OMAP3 NAND driver
  mtd: maps: Blackfin async: fix memory leaks in probe/remove funcs
  mtd: uclinux: mark local stuff static
  mtd: uclinux: do not allow to be built as a module
  mtd: uclinux: allow systems to override map addr/size
  mtd: blackfin NFC: fix hang when using NAND on BF527-EZKITs
  ...
2009-06-22 16:56:22 -07:00
Amul Saha c90173f090 mtd: OneNAND: Allow setting of boundary information when built as module
This patch unifies the flex_bdry setting for module vs. built-in 
configuration of OneNAND.

Signed-off-by: Amul Kumar Saha <amul.saha@samsung.com>
Signed-off-by: Vishak G <vishak.g@samsung.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-06-16 08:43:33 +01:00
Kyungmin Park 31bb999ee7 mtd: onenand: add bbt_wait & unlock_all as replaceable for some platform
Add bbt_wait & unlock_all as replaceable for some platform such as
  s3c64xx s3c64xx has its own OneNAND controller and another interface

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-06-05 18:59:34 +01:00
Rohit Hagargundgi 5988af2319 mtd: Flex-OneNAND support
Add support for Samsung Flex-OneNAND devices.

Flex-OneNAND combines SLC and MLC technologies into a single device.
SLC area provides increased reliability and speed, suitable for storing
code such as bootloader, kernel and root file system.  MLC area
provides high density and is suitable for storing user data.

SLC and MLC regions can be configured through kernel parameter.

[akpm@linux-foundation.org: export flexoand_region and onenand_addr]
Signed-off-by: Rohit Hagargundgi <h.rohit@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Vishak G <vishak.g@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-06-05 18:59:21 +01:00
Mika Korhonen d3412dbd72 mtd: OneNAND: add missing __devexit_p
Add missing __devexit_p wrapper and no more mark shutdown with __devexit.
Fixes build in configurations where devexit functions get discarded.

Signed-off-by: Mika Korhonen <mika.j.korhonen@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-06-05 18:10:35 +01:00
Adrian Hunter ee8f376889 mtd: OneNAND: add support for OneNAND manufactured by Numonyx
In addition to adding the Numonyx manufacturer code, this patch
also ensures 'sync. write' is disabled when reading identification
data - something that the Numonyx chip objects to, but the
Samsung chip seems to ignore.

Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-06-05 17:49:25 +01:00
Kevin Hilman 8bd2294922 OMAP2/3: PM: push core PM code from linux-omap
This patch is to sync the core linux-omap PM code with mainline.  This
code has evolved and been used for a while the linux-omap tree, but
the attempt here is to finally get this into mainline.

Following this will be a series of patches from the 'PM branch' of the
linux-omap tree to add full PM hardware support from the linux-omap
tree.

Much of this PM core code was written by Jouni Hogander with
significant contributions from Paul Walmsley as well as many others
from Nokia, Texas Instruments and linux-omap community.

Signed-off-by: Jouni Hogander <jouni.hogander@nokia.com>
Cc: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2009-05-28 10:58:50 -07:00
Linus Torvalds 22ae77bc7a Merge git://git.infradead.org/mtd-2.6
* git://git.infradead.org/mtd-2.6: (53 commits)
  [MTD] struct device - replace bus_id with dev_name(), dev_set_name()
  [MTD] [NOR] Fixup for Numonyx M29W128 chips
  [MTD] mtdpart: Make ecc_stats more realistic.
  powerpc/85xx: TQM8548: Update DTS file for multi-chip support
  powerpc: NAND: FSL UPM: document new bindings
  [MTD] [NAND] FSL-UPM: Add wait flags to support board/chip specific delays
  [MTD] [NAND] FSL-UPM: add multi chip support
  [MTD] [NOR] Add device parent info to physmap_of
  [MTD] [NAND] Add support for NAND on the Socrates board
  [MTD] [NAND] Add support for 4KiB pages.
  [MTD] sysfs support should not depend on CONFIG_PROC_FS
  [MTD] [NAND] Add parent info for CAFÉ controller
  [MTD] support driver model updates
  [MTD] driver model updates (part 2)
  [MTD] driver model updates
  [MTD] [NAND] move gen_nand's probe function to .devinit.text
  [MTD] [MAPS] move sa1100 flash's probe function to .devinit.text
  [MTD] fix use after free in register_mtd_blktrans
  [MTD] [MAPS] Drop now unused sharpsl-flash map
  [MTD] ofpart: Check name property to determine partition nodes.
  ...

Manually fix trivial conflict in drivers/mtd/maps/Makefile
2009-04-06 14:56:26 -07:00
David Brownell 87f39f0493 [MTD] support driver model updates
Follow-on patch to the previous driver model patch for the MTD
framework.  This one makes various MTD drivers connect to the
driver model tree, so /sys/devices/virtual/mtd/* nodes are no
longer present ... mostly drivers used on boards I have handy.

Based on a patch from Kay Sievers.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-04-04 14:32:59 +01:00
Ming Lei 7a192ec334 platform driver: fix incorrect use of 'platform_bus_type' with 'struct device_driver'
This patch fixes the bug reported in
	http://bugzilla.kernel.org/show_bug.cgi?id=11681.

"Lots of device drivers register a 'struct device_driver' with
the '.bus' member set to '&platform_bus_type'. This is wrong,
since the platform_bus functions expect the 'struct device_driver'
to be wrapped up in a 'struct platform_driver' which provides
some additional callbacks (like suspend_late, resume_early).
The effect may be that platform_suspend_late() uses bogus data
outside the device_driver struct as a pointer pointer to the
device driver's suspend_late() function or other hard to
reproduce failures."(Lothar Wassmann)

Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-03-24 16:38:25 -07:00
Kyungmin Park 9ce969082e [MTD] [OneNAND] Add write-while-program support
OneNAND write-while-program method of writing improves performance,
compared with ordinary writes, by transferring data to OneNAND's
RAM buffers atthe same time as programming the NAND core.

When writing several NAND pages at a time, an improvement of
12% to 25% is seen.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-03-23 15:14:46 +00:00
Adrian Hunter a29f280b73 [MTD] [OneNAND] omap2: panic_write may be in an interrupt context
panic_write may read in an interrupt context.

Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-03-23 13:13:55 +00:00
Jarkko Nikula 73069e388d ARM: OMAP: Fix gpio by switching to generic gpio calls, v2
Fix compile by removing remaining omap specific gpio
calls. Based on earlier patches by Jarkko Nikula.

Also remove old GPIO key code, there is already a patch
to do this with gpio_keys.

Signed-off-by: Jarkko Nikula <jarkko.nikula@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-01-15 13:09:52 +02:00
David Woodhouse 353816f43d Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:
	arch/arm/mach-pxa/corgi.c
	arch/arm/mach-pxa/poodle.c
	arch/arm/mach-pxa/spitz.c
2009-01-05 10:50:33 +01:00
Kay Sievers 160bbab300 [MTD] struct device - replace bus_id with dev_name(), dev_set_name()
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-12-23 10:00:14 +00:00
David Brownell 15f74b0335 ARM: OMAP: use gpio_to_irq
Have most uses of OMAP_GPIO_IRQ() use gpio_to_irq() instead.
Calls used for table initialization are left alone, at least
this time around.

(This patch is for code in both the OMAP tree and mainline.)

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-12-10 17:35:26 -08:00
David Brownell 40e3925ba1 ARM: OMAP: switch to gpio_direction_input
More switchover to the cross-platform GPIO interface:
use gpio_direction_input(), not an OMAP-specific call.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-12-10 17:35:26 -08:00
David Brownell 0b84b5ca43 ARM: OMAP: switch to standard gpio get/set calls
This patch replaces some legacy OMAP GPIO calls with the "new" (not
really, any more!) calls that work on most platforms.

The calls addressed by this patch are the simple ones to get and set
values ... for code that's in mainline, including the implementations
of those calls.

Except for the declarations and definitions of those calls, all of
these changes were performed by a simple SED script.  Plus, a few
"if() set() else set()" branches were merged by hand.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-12-10 17:35:25 -08:00
Adrian Hunter 69423d99fc [MTD] update internal API to support 64-bit device size
MTD internal API presently uses 32-bit values to represent
device size.  This patch updates them to 64-bits but leaves
the external API unchanged.  Extending the external API
is a separate issue for several reasons.  First, no one
needs it at the moment.  Secondly, whether the implementation
is done with IOCTLs, sysfs or both is still debated.  Thirdly
external API changes require the internal API to be accepted
first.

Note that although the MTD API will be able to support 64-bit
device sizes, existing drivers do not and are not required
to do so, although NAND base has been updated.

In general, changing from 32-bit to 64-bit values cause little
or no changes to the majority of the code with the following
exceptions:
    	- printk message formats
    	- division and modulus of 64-bit values
    	- NAND base support
	- 32-bit local variables used by mtdpart and mtdconcat
	- naughtily assuming one structure maps to another
	in MEMERASE ioctl

Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-12-10 13:37:21 +00:00
Adrian Hunter cbbd695687 [MTD] [NAND] OMAP: OneNAND: header file relocation (part 2)
Include <linux/dma-mapping.h> and <linux/io.h>, not files from <asm/*>

Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-11-26 10:08:13 +00:00
Adrian Hunter fe875358a6 [MTD] [NAND] OMAP: OneNAND: header file relocation
Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-11-24 11:37:26 +00:00
Huang Weiyi 0f0254fa8d [MTD] [NAND] OMAP2: remove duplicated #include
Removed duplicated #include <asm/arch/gpmc.h> in
drivers/mtd/onenand/omap2.c.

Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-10-21 13:37:33 +01:00
Adrian Hunter 8afbc11454 [MTD] [NAND] OMAP2: add retry after read timeout
Very occasionally, (about one in a million) read operations are
ongoing after the timeout has expired.  So, retry three times
while the ongoing bit remains set.

Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-09-16 00:39:01 -07:00
Adrian Hunter 782b7a367d [MTD] [OneNAND] OMAP3: add delay for GPIO
On OMAP3, the driver was occasionally not seeing the GPIO
interrupt.  Adding a small delay of one register read
eliminates the problem.

Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-08-15 01:25:30 +01:00
Adrian Hunter 36cd4fb5d2 [MTD] [OneNAND] Add OMAP2 / OMAP3 OneNAND driver
This driver had resided in the OMAP tree but is now to be in MTD.

Original authors were:
	Jarkko Lavinen <jarkko.lavinen@nokia.com> and Juha Yrjölä
	IRQ and DMA support written by Timo Teras

Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-08-12 11:07:37 +01:00
Adrian Hunter bb0eb217c9 [MTD] Define and use MTD_FAIL_ADDR_UNKNOWN instead of 0xffffffff
Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-08-12 11:02:15 +01:00
David Brownell 34a82443b7 [MTD] dataflash OTP support
Now that we can tell when we have one of the newer DataFlash chips,
optionally expose the 128 bytes of OTP memory they provide.  Tested
on at45db642 revision B and D chips.

Switch mtdchar over to a generic HAVE_MTD_OTP flag instead of adding
another #ifdef for each type of chip whose driver has OTP support.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Bryan Wu <cooloney@kernel.org>
Cc: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-08-01 21:47:47 +01:00
David Woodhouse a8931ef380 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 2008-07-11 14:36:25 +01:00
Kyungmin Park ba75321193 [MTD] [MAPS] Fix cmdlineparse handling in mapping files
Now it returns the 0 if cmdlineparse not supplied.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2008-06-05 07:51:13 +01:00
Kyungmin Park 83973b8793 [MTD] [OneNAND] Check the ECC status first instead of controller
To get the correct information in case of power off recovery,
it should read ECC status first
Also remove previous workaround method.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2008-06-04 17:45:39 +01:00
Adrian Hunter 67e5a28b35 [MTD] [OneNAND] Allow for controller errors when reading
A power loss while writing can result in a page becoming unreadable.  
When the device is mounted again, reading that page gives controller 
errors. Upper level software like JFFS2 treat -EIO as fatal, refusing to 
mount at all.  That means it is necessary to treat the error as an ECC 
error to allow recovery. Note that typically in this case, the 
eraseblock can still be erased and rewritten i.e. it has not become a 
bad block.

Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2008-04-22 21:26:16 +01:00
Roel Kluin b73d7e4381 [MTD] [OneNAND] unlikely(x) || unlikely(y) => unlikely(x || y)
Acked-By: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2008-04-22 19:15:28 +01:00
Adrian Bunk 607d1cb104 [MTD] [OneNAND] proper onenand_bbt_read_oob() prototype
This patch adds a proper prototype for onenand_bbt_read_oob() in
include/linux/mtd/onenand.h

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2008-04-22 15:59:13 +01:00
Kyungmin Park 66a10506d6 [MTD] [OneNAND] Fix unlock all in Double Density Package (DDP)
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2008-02-16 15:15:55 +00:00
Richard Purdie 6c77fd649f [MTD] onenand: Add panic_write function to the onenand driver
Implement the panic_write function for the onenand driver. This waits
for any active command to complete/timeout, performs the write, waits
for it to complete and then returns.

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2008-02-07 10:31:23 +00:00
Kyungmin Park 69d79186dc [MTD] [OneNAND] Use pre-alloced oob buffer instead of local buffer
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2008-01-29 17:14:01 +09:00
Sheng Yongjie (Sam 978cb38a29 [MTD] [OneNAND] Use the u_char instead of char in oobbuf
In function onenand_verify_oob, local variable oobbuf shall be unsigned char.

In the case of a value is >= 0x80, it's unequal in comparing the value in an unsigned char and signed char.

Signed-off-by: Sheng Yongjie (Sam) <samsheng@trident.com.cn>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2008-01-29 17:13:24 +09:00
Kyungmin Park b2581be291 [MTD] [OneNAND] Check the initial bad block using ONENAND_CTRL_ERROR
Some chips don't set the ONENAND_CTRL_LOAD bit.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2008-01-29 17:12:32 +09:00
Kyungmin Park e71f04fc92 [MTD] [OneNAND] Get correct density from device ID
Use the higher bits for other purpose.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2008-01-29 17:11:38 +09:00
Kyungmin Park b21b72cf33 [MTD] [OneNAND] Consolidate OneNAND operation order
Consolidate OneNAND operation order as OneNAND Spec.
It also doesn't break previous operation order.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2008-01-29 17:10:28 +09:00
Adrian Hunter 9d2f0b7a3d [MTD] [OneNAND] fix call to onenand_verify when writing subpages
Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2008-01-29 17:07:30 +09:00
Adrian Hunter d0b36d8cc8 [MTD] [OneNAND] Do not release chip twice
Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2008-01-29 17:07:06 +09:00
Adrian Hunter 5f4d47d5d1 [MTD] [OneNAND] Do not stop reading for ECC errors
When an ECC error occurs, the read should be completed
anyway before returning -EBADMSG.  Returning -EBADMSG
straight away is incorrect.

Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-11-26 13:16:29 +00:00
Jeff Garzik 06efcad0d4 Eliminate pointless casts from void* in a few driver irq handlers.
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2007-10-23 19:53:16 -04:00
Kyungmin Park c21f900cb8 [MTD] [OneNAND] Fix wrong free the static address in onenand_sim
Reported-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-10-22 09:57:28 +01:00
Randy Dunlap 19e75ea72b [MTD] [OneNAND] onenand-sim: fix kernel-doc and typos
Correct kernel-doc notation and descriptions.
Correct other typos.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-10-20 14:11:44 +01:00
Adrian Hunter 3cd3a86b6f [MTD] [OneNAND] Avoid deadlock in erase callback; release chip lock first.
When the erase callback performs some other action on the flash, it's
highly likely to deadlock unless we actually release the chip lock
before calling it.

This patch mirrors that same change already done for NAND.

Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-10-14 13:37:53 +01:00
Adrian Hunter 30a7eb298a [MTD] [OneNAND] Return only negative error codes
The OneNAND driver was confusing JFFS2 by returning positive error
codes.

Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-10-14 13:37:41 +01:00
Adrian Hunter 34627f0e76 [MTD] [OneNAND] Synchronize block locking operations
Ensure OneNAND's block locking operations are synchronized
like all other operations.

Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-10-14 13:37:28 +01:00
Kyungmin Park 1437085c37 [MTD] [OneNAND] Fix typo related with recent commit
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-10-13 11:26:44 +01:00
Artem Bityutskiy 49dc08eeda [MTD] [OneNAND] fix numerous races
This patch make the OneNAND driver much less racy. It fixes
our "onenand_wait: read timeout!" heisenbugs. The reason of
these bugs was that the driver did not lock the chip when
accessing OTP, and it screwed up OneNAND state when the OTP
was read while JFFS2 was doing FS checking.

This patch also fixes other races I spotted:
1. BBT was not protected
2. Access to ecc_stats was not protected

Now the chip is locked when BBT is accessed.

To fix all of these I basically split all interface functions
on 'function()' and 'function_nolock()' parts.

I tested this patch on N800 hardware - it fixes our problems.
But I tested a little different version because our OneNAND
codebase is slightly out-of-date. But it should be OK.

This patch also includes the prin fixes I posted before.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-09-23 19:58:52 +01:00
Kyungmin Park d15057b703 [MTD] [OneNAND] main read/write ops support for yaffs2
Now we can use yaffs2 on OneNAND

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-09-06 09:27:03 +01:00
Kyungmin Park 12f77c9eed [MTD] [OneNAND] Use mtd_oob_ops at oob functions
To enable the main read/write at oob ops

Next time we will commit the main read/write support for yaffs2

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-08-30 01:46:28 +01:00
Adrian Bunk 73ff007537 [MTD] [ONENAND] onenand_sim.c: make struct info static
This patch makes the needlessly global struct info static.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-08-01 11:04:26 +01:00
David Woodhouse 16adce7b6f [MTD] [ONENAND] Make onenand_sim compile on non-ARM platforms.
The whole point of a sim is that it should run almost anywhere.
Gratuitously depending on '#define SZ_128K 131072' from an ARM-specific
header isn't really a good idea.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-07-10 09:08:26 +01:00
Kyungmin Park 8dab169b8b [MTD] OneNAND Simulator support
This simulate various OneNAND flash chips for the MTD onenand layer.
It's simple implementation, only basic operations.
It don't support the recent changes in NANDSIM such as lazy block allocation,
bitflip, and so on.

Note: This passed nand-tests.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-06-30 08:25:45 +01:00