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* mtd: nand: support alternate BB marker locations on MLCKevin Cernekee2010-05-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* mtd: nand: extend NAND flash detection to new MLC chipsKevin Cernekee2010-05-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* mtd: suppress warnings in inline_map_read()Kevin Cernekee2010-05-13
| | | | | | | | | | | | | | 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>
* mtd: map.h: add missing bug.h includeKevin Cernekee2010-05-13
| | | | | | 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>
* mtd: onenand: add new callback for bufferram readKyungmin Park2010-05-13
| | | | | | | | | | | 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>
* mtd: onenand: allocate verify buffer in the coreKyungmin Park2010-05-13
| | | | | | | | | | 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>
* mtd: onenand: add support for chips with 4KiB page sizeKyungmin Park2010-05-13
| | | | | | | | 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>
* mtd: chips: use common manufacturer codes in jedec_probe()Wolfram Sang2010-05-13
| | | | | | | 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>
* mtd: cfi_probe: add support for SST 0x0701 vendornameGuillaume LECERF2010-05-13
| | | | | | | | | 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>
* mtd/nand/sh_flctl: Move function mtd_to_flctl to fix build failurePeter Huewe2010-05-12
| | | | | | | | | | | 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>
* mtd: fix a huge latency problem in the MTD CFI and LPDDR flash drivers.Stefani Seibold2010-05-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* mtd/nand/sh_flctl: Replace the dangerous mtd_to_flctl macroFerenc Wagner2010-05-10
| | | | | | | | | | 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>
* mtd: mtdram.h: checkpatch cleanupAndrea Gelmini2010-05-10
| | | | | | | | 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>
* Merge branch 'master' of ↵David Woodhouse2010-03-26
|\ | | | | | | | | | | | | | | | | | | 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().
| * mtd: sh_flctl SHBUSSEL and SEL_16BIT supportMagnus Damm2010-02-01
| | | | | | | | | | | | | | | | | | | | This patch extends the sh_flctl driver with support for 16-bit bus configuration using SEL_16BIT and support for multiplexed pins using SHBUSSEL. Signed-off-by: Magnus Damm <damm@opensource.se> Acked-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * mtd: trivial sh_flctl changesMagnus Damm2010-02-01
| | | | | | | | | | | | | | | | | | | | | | | | This patch contains a few changes for the sh_flctl driver: - not sh7723-only driver - get rid of kconfig dependency - use dev_err() instead of printk() - use __devinit and __devexit for probe()/remove() - fix probe() return values Signed-off-by: Magnus Damm <damm@opensource.se> Acked-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* | Merge branch 'master' of ↵David Woodhouse2010-02-26
|\| | | | | | | | | | | 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
| * mtd: Really add ARM pismo supportRussell King - ARM Linux2010-01-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | (Commit 7cb777a3d71f9d1f7eb149c7a504d21f24219ae8 (mtd: add ARM pismo support) intended to add this, but seems only to have patched the Makefile without touching Kconfig or providing any code...) The following patch adds support for PISMO modules found on ARM Ltd development platforms. These are MTD modules, and can have a selection of SRAM, flash or DOC devices as described by an on-board I2C EEPROM. We support SRAM and NOR flash devices only by registering appropriate conventional MTD platform devices as children of the 'pismo' device. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
* | mtd: Workaround wrong write protect status on some xD cardsMaxim Levitsky2010-02-26
| | | | | | | | | | Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
* | mtd: nand: Allow caller to pass alternative ID table to nand_scan_ident()David Woodhouse2010-02-26
| | | | | | | | Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
* | mtd: nand: add ->badblockbits for minimum number of set bits in bad block byteMaxim Levitsky2010-02-26
| | | | | | | | | | | | | | | | 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>
* | mtd: nand: make reads using MTD_OOB_RAW affect only ECC validationMaxim Levitsky2010-02-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | mtd: blktrans: allow FTL drivers to export sysfs attributesMaxim Levitsky2010-02-26
| | | | | | | | | | | | | | | | | | | | | | 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>
* | mtd: blktrans: Hotplug fixesMaxim Levitsky2010-02-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 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>
* | mtd: blktrans: remove mtd_blkcore_priv, switch to per device queue and threadMaxim Levitsky2010-02-26
| | | | | | | | | | | | | | | | | | 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>
* | mtd: create unlocked versions of {get,put}_mtd_deviceMaxim Levitsky2010-02-26
| | | | | | | | | | | | | | 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>
* | mtd: move more manufacturers to the common cfi.h header fileGuillaume LECERF2010-02-26
| | | | | | | | | | | | | | | | | | | | | | | | 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>
* | mtd: nand: add lock/unlock routinesVimal Singh2010-02-26
| | | | | | | | | | | | | | | | | | 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>
* | mtd: Replace static array of devices with an idr structureBen Hutchings2010-02-25
| | | | | | | | | | | | 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>
* | mtd: quiet sparse noise in cfi.hH Hartley Sweeten2010-02-25
|/ | | | | | | | | | | | | In the inline function cfi_build_cmd_addr, the cast of cmd_ofs to an uint8_t produces a sparse warning of the type: warning: cast truncates bits from constant value (2aa becomes aa) Quiet the warning by masking cmd_ofs with 0xff and remove the cast. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
* Merge git://git.infradead.org/mtd-2.6Linus Torvalds2009-12-16
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 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
| * mtd: move manufacturer to the common cfi.h header fileHans-Christian Egtvedt2009-11-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch moves the MANUFACTURER_ST and MANUFACTURER_INTEL to the include/linux/mtd/cfi.h header file and renames them to CFI_MFR_ST and CFI_MFR_INTEL. CFI_MFR_ST was already present there. All references in drivers/mtd/chips/cfi_cmdset_0001.c are updated to reflect this. Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com> Acked-by: Nicolas Pitre <nico@fluxnic.net> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: nand: add option to quieten off the no device found messgaeBen Dooks2009-11-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add NAND_SCAN_SILENT_NODEV to chip->options to the user-worrying messages 'No NAND device found!!!'. This message often worries users (was three exclamation marks really necessary?) and especially in systems such as the Simtec Osiris where there may be optional NAND devices which are not known until probe time. Revised version of the original NAND_PROBE_SPECULATIVE patch after comments by Artem Bityutskiy about adding a whole new call. Signed-off-by: Ben Dooks <ben@simtec.co.uk> Signed-off-by: Simtec Linux Team <linux@simtec.co.uk> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: OneNAND: multiblock erase supportMika Korhonen2009-11-30
| | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * mtd: Add __nand_calculate_ecc() to NAND ECC functionsAkinobu Mita2009-11-30
| | | | | | | | | | | | | | | | | | | | | | Add __nand_calculate_ecc() which does not take struct mtd_info. The built-in 256/512 software ECC calculation and correction tester will use it. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Acked-by: Vimal Singh <vimalsingh@ti.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: OneNAND OTP support reworkAmul Kumar Saha2009-11-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * mtd: unify status enum from three headersAlessandro Rubini2009-09-24
| | | | | | | | | | | | | | | | | | | | | | | | | | nand.h, onenand.h and flashchip.h defined enumeration types for chip status using the same symbolic names. This prevented a board file to include more than one of them. In particular, no nand and onenand platform devices could live in the same file. This patch augments flashchip.h with a few status values in order to cover all cases, so nand.h and onenand.h can use flstate_t without declaring their own status enum. Signed-off-by: Alessandro Rubini <rubini@unipv.it> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: use bbm.h in nand.hAlessandro Rubini2009-09-24
| | | | | | | | | | | | | | | | | | | | This consolidates common code in nand.h and bbm.h. The comments and data structures were the same, this keeps the comment from nand.h as it fits 80 columns, while the one in bbm.h did not. Signed-off-by: Alessandro Rubini <rubini@unipv.it> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
* | UBI: Add ubi_open_volume_pathCorentin Chary2009-11-24
|/ | | | | | | | | | | | | Add an 'ubi_open_volume_path(path, mode)' function which works like 'open_bdev_exclusive(path, mode, ...)' where path is the special file representing the UBI volume, typically /dev/ubi0_0. This is needed to teach UBIFS being able to mount UBI character devices. [Comments and the patch were amended a bit by Artem] Signed-off-by: Corentin Chary <corentincj@iksaif.net> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* Merge branch 'master' of ↵David Woodhouse2009-09-20
|\ | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 Conflicts: drivers/mtd/mtdcore.c Merged in order that I can apply the Nomadik nand/onenand support patches.
| * Nicolas Pitre has a new email addressNicolas Pitre2009-09-15
| | | | | | | | | | | | | | | | Due to problems at cam.org, my nico@cam.org email address is no longer valid. FRom now on, nico@fluxnic.net should be used instead. Signed-off-by: Nicolas Pitre <nico@fluxnic.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | mtd: nand: add __nand_correct_data helper functionAtsushi Nemoto2009-09-19
| | | | | | | | | | | | | | | | | | | | | | | | | | Split nand_correct_data() into two part, a pure calculation function and a wrapper for mtd interface. The tmio_nand driver can implement its ecc.correct function easily using this __nand_correct_data helper. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Acked-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Acked-by: Vimal Singh <vimalsingh@ti.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
* | mtd: nand: add new ECC mode - ECC_HW_OOB_FIRSTSneha Narnakaje2009-09-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds the new mode NAND_ECC_HW_OOB_FIRST in the nand code to support 4-bit ECC on TI DaVinci devices with large page (up to 2KiB) NAND chips. This ECC mode is similar to NAND_ECC_HW, with the exception of read_page API that first reads the OOB area, reads the data in chunks, feeds the ECC from OOB area to the ECC hw engine and perform any correction on the data as per the ECC status reported by the engine. "ECC_HW_OOB_FIRST" name suggested by Thomas Gleixner Reviewed-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Sneha Narnakaje <nsnehaprabha@ti.com> Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
* | mtd: nand: add "page" parameter to all read_page/read_page_raw APIsSneha Narnakaje2009-09-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds a new "page" parameter to all NAND read_page/read_page_raw APIs. The read_page API for the new mode ECC_HW_OOB_FIRST requires the page information to send the READOOB command and read the OOB area before the data area. Reviewed-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Sneha Narnakaje <nsnehaprabha@ti.com> Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
* | mtd: onenand: make onenand/generic.c more genericMagnus Damm2009-09-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | mtd: OneNAND: 4-bit ECC status macrosKyungmin Park2009-09-04
|/ | | | | | | | Define ECC status for 4-bit ECC status 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>
* mtd: fix the conversion from dev to mtd_infoSaeed Bishara2009-08-03
| | | | | | | | | | The patch fixes a bug when converting dev to mtd_info by using the drvdata of the dev, the previous code used container_of(dev, struct mtd_info, dev), but won't work for the mtdXro devices as they created without being contained inside mtd_info structure. Signed-off-by: Saeed Bishara <saeed@marvell.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
* mtd: let include/linux/mtd/partitions.h stand on its ownNicolas Pitre2009-08-03
| | | | | | | | | | | | | | | | | When declaring static MTD partitions in board specific code, only including <include/linux/mtd/partitions.h> should suffice without gcc nagging us with: In file included from arch/arm/mach-kirkwood/sheevaplug-setup.c:14: include/linux/mtd/partitions.h:50: warning: 'struct mtd_info' declared inside parameter list include/linux/mtd/partitions.h:50: warning: its scope is only this definition or declaration, which is probably not what you want include/linux/mtd/partitions.h:51: warning: 'struct mtd_info' declared inside parameter list include/linux/mtd/partitions.h:61: warning: 'struct mtd_info' declared inside parameter list include/linux/mtd/partitions.h:67: warning: 'struct mtd_info' declared inside parameter list Signed-off-by: Nicolas Pitre <nico@marvell.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
* Merge git://git.infradead.org/mtd-2.6Linus Torvalds2009-06-22
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 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 ...
| * mtd: onenand: add bbt_wait & unlock_all as replaceable for some platformKyungmin Park2009-06-05
| | | | | | | | | | | | | | | | | | 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>
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