Граф коммитов

264 Коммитов

Автор SHA1 Сообщение Дата
Linus Torvalds 79346507ad Merge git://git.infradead.org/mtd-2.6
* git://git.infradead.org/mtd-2.6: (82 commits)
  mtd: fix build error in m25p80.c
  mtd: Remove redundant mutex from mtd_blkdevs.c
  MTD: Fix wrong check register_blkdev return value
  Revert "mtd: cleanup Kconfig dependencies"
  mtd: cfi_cmdset_0002: make sector erase command variable
  mtd: cfi_cmdset_0002: add CFI detection for SST 38VF640x chips
  mtd: cfi_util: add support for switching SST 39VF640xB chips into QRY mode
  mtd: cfi_cmdset_0001: use defined value of P_ID_INTEL_PERFORMANCE instead of hardcoded one
  block2mtd: dubious assignment
  P4080/mtd: Fix the freescale lbc issue with 36bit mode
  P4080/eLBC: Make Freescale elbc interrupt common to elbc devices
  mtd: phram: use KBUILD_MODNAME
  mtd: OneNAND: S5PC110: Fix double call suspend & resume function
  mtd: nand: fix MTD_MODE_RAW writes
  jffs2: use kmemdup
  mtd: sm_ftl: cosmetic, use bool when possible
  mtd: r852: remove useless pci powerup/down from suspend/resume routines
  mtd: blktrans: fix a race vs kthread_stop
  mtd: blktrans: kill BKL
  mtd: allow to unload the mtdtrans module if its block devices aren't open
  ...

Fix up trivial whitespace-introduced conflict in drivers/mtd/mtdchar.c
2010-10-30 08:31:35 -07:00
Al Viro 848b83a59b convert get_sb_mtd() users to ->mount()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-10-29 04:16:26 -04:00
Guillaume LECERF 08968041be mtd: cfi_cmdset_0002: make sector erase command variable
Some old SST chips use 0x50 as sector erase command, instead
of 0x30. Make this value variable to handle such chips.

Signed-off-by: Guillaume LECERF <glecerf@gmail.com>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-26 11:39:17 +01:00
Sebastian Andrzej Siewior b46daf7eb1 mtd: remove junk tabs in nand.h
Remove tabs between type and name.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-25 00:56:51 +01:00
Sebastian Andrzej Siewior a0491fc4d4 mtd: cleanup nand.h
- *var instead of * var
- proper multiline comment
- func(args) instead of func (args)
- 80 lines

So from
|total: 2 errors, 37 warnings, 654 lines checked
we got to one warning.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-25 00:56:32 +01:00
Sebastian Andrzej Siewior 453281a973 mtd: nand: introduce NAND_CREATE_EMPTY_BBT
it will create an empty BBT table without considering vendor's BBT
information. Vendor's information may be unavailable if the NAND
controller has a different DATA & OOB layout or this information may be
allready purged.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-25 00:54:37 +01:00
Sebastian Andrzej Siewior 7cba7b14fe mtd: nand: add support for BBT without OOB
The first (sixt) byte in the OOB area contains vendor's bad block
information. During identification of the NAND chip this information is
collected by scanning the complete chip.
The option NAND_USE_FLASH_BBT is used to store this information in a sector so
we don't have to scan the complete flash. Unfortunately the code stores
a marker in order to recognize the BBT in the OOB area. This will fail
if the OOB area is completely used for ECC.
This patch introduces the option NAND_USE_FLASH_BBT_NO_OOB which has to be
used with NAND_USE_FLASH_BBT. It will then store BBT on flash without
touching the OOB area. The BBT format on flash remains same except the
first page starts with the recognition pattern followed by the version byte.
This change was tested in nandsim and it looks good so far :)

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-25 00:53:48 +01:00
Huang Shijie 12a40a57f7 mtd: add init_size hook for NAND driver
Not all the NAND devices have all the information in additional
id bytes.

So add a hook in the nand_chip{} is a good method to calculate the
right value of oobsize, erasesize and so on.

Without the hook,you will get the wrong value, and you have to hack
in the ->scan_bbt() to change the wrong value which make the code
mess.

Signed-off-by: Huang Shijie <shijie8@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-25 00:49:57 +01:00
Roman Tereshonkov 5daa7b2149 mtd: prepare partition add and del functions for ioctl requests
mtd_is_master, mtd_add_partition and mtd_del_partition functions
are added to give the possibility of partition manipulation
by ioctl request.

The old partition add function is modified to fit the dynamic
allocation.

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>
2010-10-25 00:47:37 +01:00
Linus Walleij 6c009ab89a mtd: generic FSMC NAND MTD driver
This is the same driver submitted by ST Micros SPEAr team but
generalized and tested on the ST-Ericsson U300. It probably
easily works on the NHK8815 too.

Signed-off-by: Vipin Kumar <vipin.kumar@st.com>
Signed-off-by: Rajeev Kumar <rajeev-dlh.kumar@st.com>
Signed-off-by: Shiraz Hashim <shiraz.hashim@st.com>
Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-25 00:33:48 +01:00
Florian Fainelli d1e1f4e42b mtd: nand: add support for reading ONFI parameters from NAND device
This patch adds support for reading NAND device ONFI parameters and use
the ONFI informations to define its geometry. In case the device supports
ONFI, the onfi_version field in struct nand_chip contains the version (BCD)
and the onfi_params structure can be used by drivers to set up timings and
such. We currently only support ONFI 1.0 parameters.

Signed-off-by: Brian Norris <norris@broadcom.com>
Signed-off-by: Matthieu Castet <matthieu.castet@parrot.com>
Signed-off-by: Maxime Bizon <mbizon@freebox.fr>
Signed-off-by: Florian Fainelli <ffainelli@freebox.fr>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-24 23:46:34 +01:00
Florian Fainelli caa4b6f24c mtd: nand: add NAND_CMD_PARAM (0xec) definition
This command is used to read the device ONFI parameters page.

Signed-off-by: Florian Fainelli <ffainelli@freebox.fr>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-24 23:45:00 +01:00
Brian Norris 5c709ee9f3 mtd: nand: Increase NAND_MAX_OOBSIZE
An increase in NAND_MAX_OOBSIZE and NAND_MAX_PAGESIZE is necessary
in order to support many new chips. Among those:

Toshiba TC58TxG4S2FBAxx  8KB page, 576B OOB
Micron MT29F64G08CBAAA   8KB page, 448B OOB

Signed-off-by: Brian Norris <norris@broadcom.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-24 23:37:51 +01:00
Brian Norris 0ceacf36e9 mtd: edit comments on deprecation of ioctl ECCGETLAYOUT
There were some improvements and additions necessary in the
comments explaining of the expansion of nand_ecclayout, the
introduction of nand_ecclayout_user, and the deprecation of the
ioctl ECCGETLAYOUT.

Also, I found a better placement for the macro MTD_MAX_ECCPOS_ENTRIES;
next to the definition of MTD_MAX_OOBFREE_ENTRIES in mtd-abi.h. The macro
is really only important for the ioctl code (found in drivers/mtd/mtdchar.c)
but since there are small edits being made to the user-space header, I
figured this is a better location.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-24 23:37:27 +01:00
Brian Norris cc26c3cd3d mtd: nand: expand nand_ecc_layout, deprecate ioctl ECCGETLAYOUT
struct nand_ecclayout is too small for many new chips; OOB regions can be as
large as 448 bytes and may increase more in the future. Thus, copying that
struct to user-space with the ECCGETLAYOUT ioctl is not a good idea; the ioctl
would have to be updated every time there's a change to the current largest
size.

Instead, the old nand_ecclayout is renamed to nand_ecclayout_user and a
new struct nand_ecclayout is created that can accomodate larger sizes and
expand without affecting the user-space. struct nand_ecclayout can still
be used in board drivers without modification -- at least for now.

A new function is provided to convert from the new to the old in order to
allow the deprecated ioctl to continue to work with truncated data. Perhaps
the ioctl, the conversion process, and the struct nand_ecclayout_user can be
removed altogether in the future.

Note: There are comments in nand/davinci_nand.c::nand_davinci_probe()
regarding this issue; this driver (and maybe others) can be updated to
account for extra space. All kernel drivers can use the expanded
nand_ecclayout as a drop-in replacement and ignore its benefits.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-24 23:37:24 +01:00
Brian Norris f4a2da0cd5 mtd: inftl.h: fix spacing errors
Replaced some spaces with tabs to fit CodingStyle guidelines

Signed-off-by: Brian Norris <norris@broadcom.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-24 23:27:24 +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
David Woodhouse a1452a3771 mtd: Update copyright notices
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2010-08-08 20:58:20 +01:00
Barry Song 78ef7fab0e mtd-physmap: add support users can assign the probe type in board files
There are three reasons to add this support:
1. users probably know the interface type of their flashs, then probe
can be faster if they give the right type in platform data since wrong
types will not be detected.
2. sometimes, detecting can cause destory to system. For example, for
kernel XIP, detecting can cause NOR enter a mode instructions can not
be fetched right, which will make kernel crash.
3. For a new probe which is not listed in the rom_probe_types, if users
assign it in board files, physmap can still probe it.

Signed-off-by: Barry Song <21cnbao@gmail.com>
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-08-08 12:28:15 +01:00
Stefani Seibold 8ae664184c mtd: change struct flchip_shared spinlock locking into mutex
This patch prevent to schedule while atomic by changing the
flchip_shared spinlock into a mutex. This should be save since no atomic
path will use this lock.

It was suggested by Arnd Bergmann and Vasiliy Kulikov.

Signed-off-by: Stefani Seibold <stefani@seibold.net>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-08-06 09:22:16 +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
Brian Norris 58373ff0af mtd: nand: more BB Detection refactoring and dynamic scan options
This is a revision to PATCH 2/2 that I sent. Link:
http://lists.infradead.org/pipermail/linux-mtd/2010-July/030911.html

Added new flag for scanning of both bytes 1 and 6 of the OOB for
a BB marker (instead of simply one or the other).

The "check_pattern" and "check_short_pattern" functions were updated
to include support for scanning the two different locations in the OOB.

In order to handle increases in variety of necessary scanning patterns,
I implemented dynamic memory allocation of nand_bbt_descr structs
in new function 'nand_create_default_bbt_descr()'. This replaces
some increasingly-unwieldy, statically-declared descriptors. It can
replace several more (e.g. "flashbased" structs). However, I do not
test the flashbased options personally.

How this was tested:

I referenced 30+ data sheets (covering 100+ parts), and I tested a
selection of 10 different chips to varying degrees. Particularly, I
tested the creation of bad-block descriptors and basic BB scanning on
three parts:

ST NAND04GW3B2D, 2K page
ST NAND128W3A, 512B page
Samsung K9F1G08U0A, 2K page

To test these, I wrote some fake bad block markers to the flash (in OOB
bytes 1, 6, and elsewhere) to see if the scanning routine would detect
them properly. However, this method was somewhat limited because the
driver I am using has some bugs in its OOB write functionality.

Signed-off-by: Brian Norris <norris@broadcom.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-08-02 09:09:06 +01:00
Brian Norris 30fe8115b5 mtd: nand: edit macro flag for BBT scan of last page in block
NAND_BB_LAST_PAGE used to be in nand.h, but it pertained to bad block
management and so belongs next to NAND_BBT_SCAN2NDPAGE in bbm.h. Also,
its previous flag value (0x00000400) conflicted with NAND_BBT_SCANALLPAGES
so I changed its value to 0x00008000. All uses of the name were modified to
provide consistency with other "NAND_BBT_*" flags.

Signed-off-by: Brian Norris <norris@broadcom.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-08-02 09:05:12 +01:00
Richard Cochran 9938424f0c mtd: add an ioctl to query the lock status of a flash sector
This patchs adds a way for user space programs to find out whether a
flash sector is locked. An optional driver method in the mtd_info struct
provides the information.

Signed-off-by: Richard Cochran <richard.cochran@omicron.at>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-08-02 09:03:41 +01:00
Kevin Cernekee b60b08b02c mtd: nand: support alternate BB marker locations on MLC
This is a slightly modified version of a patch submitted last year by
Reuben Dowle <reuben.dowle@navico.com>.  His original comments follow:

This patch adds support for some MLC NAND flashes that place the BB
marker in the LAST page of the bad block rather than the FIRST page used
for SLC NAND and other types of MLC nand.

Lifted from Samsung datasheet for K9LG8G08U0A (1Gbyte MLC NAND):
"
Identifying Initial Invalid Block(s)
All device locations are erased(FFh) except locations where the initial
invalid block(s) information is written prior to shipping. The initial
invalid block(s) status is defined by the 1st byte in the spare area.
Samsung makes sure that the last page of every initial invalid block has
non-FFh data at the column address of 2,048.
...
"

As far as I can tell, this is the same for all Samsung MLC nand, and in
fact the samsung bsp for the processor used in our project (s3c6410)
actually contained a hack similar to this patch but less portable to
enable use of their NAND parts. I discovered this problem when trying to
use a Micron NAND which does not used this layout - I wish samsung would
put their stuff in main-line to avoid this type of problem.

Currently this patch causes all MLC nand with manufacturer codes from
Samsung and ST(Numonyx) to use this alternative location, since these
are the manufactures that I know of that use this layout.

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-05-14 01:56:12 +01:00
Kevin Cernekee 426c457a32 mtd: nand: extend NAND flash detection to new MLC chips
Some of the newer MLC devices have a 6-byte ID sequence in which
several field definitions differ from older chips in a manner that is
not backward compatible.  For instance:

Samsung K9GAG08U0M (5-byte sequence): ec d5 14 b6 74
4th byte, bits 1:0 encode the page size: 0=1KiB, 1=2KiB, 2=4KiB, 3=8KiB
4th byte, bits 5:4 encode the block size: 0=64KiB, 1=128KiB, ...
4th byte, bit 6 encodes the OOB size: 0=8B/512B, 1=16B/512B

Samsung K9GAG08U0D (6-byte sequence): ec d5 94 29 34 41
4th byte, bits 1:0 encode the page size: 0=2KiB, 1=4KiB, 3=8KiB, 4=rsvd
4th byte, bits 7;5:4 encode the block size: 0=128KiB, 1=256KiB, ...
4th byte, bits 6;3:2 encode the OOB size: 1=128B/page, 2=218B/page

This patch uses the new 6-byte scheme if the following conditions are
all true:

1) The ID code wraps around after exactly 6 bytes

2) Manufacturer is Samsung

3) 6th byte is zero

The patch also extends the maximum OOB size from 128B to 256B.

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-05-14 01:54:44 +01:00
Kevin Cernekee 9ea5973883 mtd: suppress warnings in inline_map_read()
With gcc 4.4.3 -O2 on MIPS32:

drivers/mtd/chips/cfi_util.c: In function 'cfi_qry_present':
include/linux/mtd/map.h:390: warning: 'r' may be used uninitialized in this function
include/linux/mtd/map.h:375: note: 'r' was declared here
include/linux/mtd/map.h:390: warning: 'r' may be used uninitialized in this function
include/linux/mtd/map.h:375: note: 'r' was declared here

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-05-14 01:52:55 +01:00
Kevin Cernekee 709c4efb68 mtd: map.h: add missing bug.h include
Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-05-14 01:52:32 +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
Wolfram Sang ae73182229 mtd: chips: use common manufacturer codes in jedec_probe()
Factor out old manufacturers and use the generic ones from cfi.h

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-05-14 01:48:58 +01:00
Guillaume LECERF 54b93a49d8 mtd: cfi_probe: add support for SST 0x0701 vendorname
SST 39VF160x and 39VF320x chips use vendorname id 0x0701 and alternative
unlock addresses. Add support for them in cfi_probe.c.

Signed-off-by: Guillaume LECERF <glecerf@gmail.com>
Reviewed-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-05-14 01:08:11 +01:00
Peter Huewe 1cd2620ca9 mtd/nand/sh_flctl: Move function mtd_to_flctl to fix build failure
This patch fixes a build failure[1] by simply moving the function mtd_to_flctl
beneath the definition of sh_flctl which it uses.

BF introduced by patch
'mtd/nand/sh_flctl: Replace the dangerous mtd_to_flctl macro' (67026418)

Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-05-12 23:24:23 +01:00
Stefani Seibold c4e773764c mtd: fix a huge latency problem in the MTD CFI and LPDDR flash drivers.
The use of a memcpy() during a spinlock operation will cause very long
thread context switch delays if the flash chip bandwidth is low and the
data to be copied large, because a spinlock will disable preemption.

For example: A flash with 6,5 MB/s bandwidth will cause under ubifs,
which request sometimes 128 KiB (the flash erase size), a preemption delay of
20 milliseconds. High priority threads will not be served during this
time, regardless whether this threads access the flash or not. This behavior
breaks real time.

The patch changes all the use of spin_lock operations for xxxx->mutex
into mutex operations, which is exact what the name says and means.

I have checked the code of the drivers and there is no use of atomic
pathes like interrupt or timers. The mtdoops facility will also not be used
by this drivers. So it is dave to replace the spin_lock against mutex.

There is no performance regression since the mutex is normally not
acquired.

Changelog:
 06.03.2010 First release
 26.03.2010 Fix mutex[1] issue and tested it for compile failure

Signed-off-by: Stefani Seibold <stefani@seibold.net>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-05-10 14:22:30 +01:00
Ferenc Wagner 67026418f5 mtd/nand/sh_flctl: Replace the dangerous mtd_to_flctl macro
The original macro worked only when applied to variables named 'mtd'.
While this could have been fixed by simply renaming the macro argument,
a more type-safe replacement is preferred.

Signed-off-by: Ferenc Wagner <wferi@niif.hu>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-05-10 14:22:19 +01:00
Andrea Gelmini 0a382a74b6 mtd: mtdram.h: checkpatch cleanup
include/linux/mtd/mtdram.h:6: ERROR: code indent should use tabs where possible

Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-05-10 14:11:30 +01:00
David Woodhouse 329f9052db Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:
	drivers/mtd/nand/sh_flctl.c

Maxim's patch to initialise sysfs attributes depends on the patch which
actually adds sysfs_attr_init().
2010-03-26 14:55:59 +00:00
David Woodhouse a7790532f5 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
The SmartMedia FTL code depends on new kfifo bits from 2.6.33
2010-02-26 19:06:24 +00:00
Maxim Levitsky 93edbad69b mtd: Workaround wrong write protect status on some xD cards
Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26 18:44:57 +00:00
David Woodhouse 5e81e88a4c mtd: nand: Allow caller to pass alternative ID table to nand_scan_ident()
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26 18:32:56 +00:00
Maxim Levitsky e0b58d0a70 mtd: nand: add ->badblockbits for minimum number of set bits in bad block byte
This can be used to protect against bitflips in that field, but now mostly
for smartmedia.

Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26 18:02:07 +00:00
Maxim Levitsky b64d39d8b0 mtd: nand: make reads using MTD_OOB_RAW affect only ECC validation
This changes the behavier of MTD_OOB_RAW. It used to read both OOB and 
data to the data buffer, however you would still need to specify the 
dummy oob buffer.

This is only used in one place, but makes it hard to read data+oob 
without ECC test, thus I removed that behavier, and fixed the user.

Now MTD_OOB_RAW behaves just like MTD_OOB_PLACE, but doesn't do ECC 
validation

Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26 18:00:08 +00:00
Maxim Levitsky 026ec57886 mtd: blktrans: allow FTL drivers to export sysfs attributes
This patch adds an ability to export sysfs attributes below
the block disk device.

This can be used to pass the udev an information about the FTL
and could include the vendor, serial, version, etc...

Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26 17:37:40 +00:00
Maxim Levitsky 048d871995 mtd: blktrans: Hotplug fixes
* Add locking where it was missing.

* Don't do a get_mtd_device in blktrans_open because it would lead to a
  deadlock; instead do that in add_mtd_blktrans_dev.

* Only free the mtd_blktrans_dev structure when the last user exits.

* Flush request queue on device removal.

* Track users, and call tr->release in del_mtd_blktrans_dev
  Due to that ->open and release aren't called more that once.

Now it is safe to call del_mtd_blktrans_dev while the device is still in use.

Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26 17:05:26 +00:00
Maxim Levitsky a863862257 mtd: blktrans: remove mtd_blkcore_priv, switch to per device queue and thread
This is the biggest change. To make hotplug possible, and this layer 
clean, the mtd_blktrans_dev now contains everything for a single mtd 
block translation device. Also removed some very old leftovers.

Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26 17:04:03 +00:00
Maxim Levitsky 3bd456576f mtd: create unlocked versions of {get,put}_mtd_device
Use these only if you know that you already hold mtd_table_mutex

Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26 17:03:15 +00:00
Guillaume LECERF f3e69c6584 mtd: move more manufacturers to the common cfi.h header file
Move MANUFACTURER_MACRONIX and MANUFACTURER_SST definitions to the
include/linux/mtd/cfi.h header file and rename them to CFI_MFR_MACRONIX and
CFI_MFR_SST.

All references in drivers/mtd/chips/cfi_cmdset_0002.c are updated to reflect
this.

Signed-off-by: Guillaume LECERF <glecerf@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26 16:45:52 +00:00
Vimal Singh 7d70f334ad mtd: nand: add lock/unlock routines
Add nand lock / unlock routines. At least 'micron' parts
support this.

Signed-off-by: Vimal Singh <vimalsingh@ti.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26 13:21:49 +00:00
Ben Hutchings b520e412fa mtd: Replace static array of devices with an idr structure
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-25 11:55:14 +00:00