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2010-08-08mtd: Update copyright noticesDavid Woodhouse1-3/+3
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2010-08-02mtd: nand: edit macro flag for BBT scan of last page in blockBrian Norris1-2/+0
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>
2010-05-14mtd: nand: support alternate BB marker locations on MLCKevin Cernekee1-0/+2
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>
2010-05-14mtd: nand: extend NAND flash detection to new MLC chipsKevin Cernekee1-1/+1
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>
2010-02-26mtd: Workaround wrong write protect status on some xD cardsMaxim Levitsky1-0/+6
Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26mtd: nand: Allow caller to pass alternative ID table to nand_scan_ident()David Woodhouse1-1/+3
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26mtd: nand: add ->badblockbits for minimum number of set bits in bad block byteMaxim Levitsky1-0/+1
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>
2010-02-26mtd: nand: add lock/unlock routinesVimal Singh1-0/+10
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>
2009-11-30mtd: nand: add option to quieten off the no device found messgaeBen Dooks1-1/+3
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>
2009-09-24mtd: unify status enum from three headersAlessandro Rubini1-15/+2
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>
2009-09-24mtd: use bbm.h in nand.hAlessandro Rubini1-75/+1
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>
2009-09-19mtd: nand: add new ECC mode - ECC_HW_OOB_FIRSTSneha Narnakaje1-0/+1
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>
2009-09-19mtd: nand: add "page" parameter to all read_page/read_page_raw APIsSneha Narnakaje1-2/+2
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>
2009-06-05mtd: plat_nand: allow platform to set partitionsH Hartley Sweeten1-0/+3
Add optional callback to allow platform to initialize partitions. Static partitions on a nand device could vary depending on the size of the device. This patch allows an optional platform callback to be used to setup this partition information at runtime. Scan order is: 1) chip.part_probe_types 2) chip.set_parts 3) chip.partitions 4) full mtd device (fallback for no partitions) Some of the existing nand drivers could possibly be replaced by the plat_nand driver by using this patch. These include autcpu12.c and ts7250.c drivers. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-06-05mtd: plat_nand: add platform probe/remove callbacksH Hartley Sweeten1-0/+7
Add optional probe and remove callbacks to the plat_nand driver. Some platforms may require additional setup, such as configuring the memory controller, before the nand device can be accessed. This patch provides an optional callback to handle this setup as well as a callback to teardown the setup. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Tested-by: Alexander Clouter <alex@digriz.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-06-05mtd: extend plat_nand for (read|write)_bufAlexander Clouter1-0/+6
This patch adds (write|read)_buf callbacks to plat_nand. The NAND on the TS-7800 provisioned by the FPGA allows readw() and readl() to be used which gives a 2.5x speed up. To be able to use this from the plat_nand driver a hook for read_buf (and also write_buf whilst we are in there) need to be made available. This patch adds the hook. Signed-off-by: Alexander Clouter <alex@digriz.org.uk> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-04-06[MTD] [NAND] Add support for 4KiB pages.Thomas Gleixner1-2/+2
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Sebastian Siewior <bigeasy@linutronix.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-12-10[MTD] [NAND] remove excess kernel-doc notationRandy Dunlap1-5/+0
Delete extra kernel-doc notation for struct fields and function parameters that don't exist: Warning(include/linux/mtd/nand.h:428): Excess struct/union/enum/typedef member 'wq' description in 'nand_chip' Warning(include/linux/mtd/nand.h:428): Excess struct/union/enum/typedef member 'datbuf' description in 'nand_chip' Warning(include/linux/mtd/nand.h:428): Excess struct/union/enum/typedef member 'oobbuf' description in 'nand_chip' Warning(include/linux/mtd/nand.h:428): Excess struct/union/enum/typedef member 'oobdirty' description in 'nand_chip' Warning(include/linux/mtd/nand.h:428): Excess struct/union/enum/typedef member 'data_poi' description in 'nand_chip' Warning(drivers/mtd/nand/nand_base.c:2527): Excess function parameter 'maxchips' description in 'nand_scan_tail' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-12-10[MTD] update internal API to support 64-bit device sizeAdrian Hunter1-1/+1
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>
2008-08-20[MTD] [NAND] Fix missing kernel-docAlexey Korolev1-0/+1
[Reported by Randy Dunlap] Signed-off-by: Alexey Korolev <akorolev@infradead.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-07-30[MTD] [NAND] fix subpage read for small page NANDAlexey Korolev1-1/+3
Current implementation of subpage read feature for NAND has issues with small page devices. Small page NAND do not support RNDOUT command. So subpage feature is not applicable for them. This patch disables support of subpage for small page NAND. The code is verified on nandsim(SP NAND simulation) and on LP NAND devices. Thanks a lot to Artem for finding this issue. Signed-off-by: Alexey Korolev <akorolev@infradead.org> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-07-25[MTD] [NAND] subpage read feature as a way to increase performance. Alexey Korolev1-0/+5
This patch enables NAND subpage read functionality. If upper layer drivers are requesting to read non page aligned data NAND subpage-read functionality reads the only whose ECC regions which include requested data when original code reads whole page. This significantly improves performance in many cases. Here are some digits : UBI volume mount time No subpage reads: 5.75 seconds Subpage read patch: 2.42 seconds Open/stat time for files on JFFS2 volume: No subpage read 0m 5.36s Subpage read 0m 2.88s Signed-off-by Alexey Korolev <akorolev@infradead.org> Acked-by: Artem Bityutskiy <dedekind@infradead.org> Acked-by: Jörn Engel <joern@logfs.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-07-11Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6David Woodhouse1-1/+1
2008-06-06Fix various old email addresses for dwmw2David Woodhouse1-1/+1
Although if people have questions about ARCnet, perhaps it's _better_ for them to be mailing dwmw2@cam.ac.uk about it... Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-06-04MTD/JFFS2: remove CVS keywordsAdrian Bunk1-2/+0
Once upon a time, the MTD repository was using CVS. This patch therefore removes all usages of the no longer updated CVS keywords from the MTD code. This also includes code that printed them to the user. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-07-23[MTD] [NAND] Add NAND manufacturer AMD.Steven J. Hill1-0/+1
This patch adds the manufacturer ID for AMD flash. Signed-off-by: Steven J. Hill <sjhill1@rockwellcollins.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-05-08[MTD] [NAND] platform NAND driver: update headerVitaly Wool1-0/+16
This patch extends nand.h in order to enable platform NAND driver. Signed-off-by: Vitaly Wool <vitalywool@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-04-17[MTD][NAND] Add Micron Manufacturer IDsshahrom@micron.com1-0/+1
Add Micron Manufacturer ID. Signed-off-by: Shahrom Sharif <sshahrom@micron.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-02-09[MTD] [NAND] Add kernel-doc for cellinfo field of struct nand_chipRandy Dunlap1-0/+1
Fixes kernel-doc warning in mtd/nand.h. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-12-01Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6David Woodhouse1-1/+1
2006-11-29[MTD] NAND: add subpage write supportThomas Gleixner1-0/+9
Many SLC NANDs support up to 4 writes at one NAND page. Add support of this feature. Signed-off-by: Artem Bityutskiy <dedekind@infradead.org>
2006-10-30[PATCH] MTD: fix last kernel-doc warningRandy Dunlap1-1/+1
Fix the last current kernel-doc warning: Warning(/var/linsrc/linux-2619-rc3g5//include/linux/mtd/nand.h:416): No description found for parameter 'write_page' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-21[MTD] NAND: Combined oob buffer so it's contiguous with dataDavid Woodhouse1-5/+1
Ditch the separate oobrbuf and oobwbuf fields from the chip buffers, and use only a single buffer immediately after the data. This accommodates NAND controllers such as the OLPC CAFÉ chip, which can't do scatter/gather DMA so needs the OOB buffer to be contiguous with the data, for both read and write. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-09-25[MTD NAND] Provide prototype for newly-exported nand_wait_ready()David Woodhouse1-0/+3
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-09-25[MTD NAND] Allow override of page read and write functions.David Woodhouse1-0/+11
- allow high-level nand_write_page() function to be overridden - likewise low-level write_page_raw() and read_page_raw() functions - Clean up the abuse of chip->ecc.{write,read}_page() with MTD_OOB_RAW Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-09-25[MTD NAND] Allocate chip->buffers separately to allow it to be overriddenDavid Woodhouse1-2/+4
In particular, the board driver might need it to be DMAable. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-09-25[MTD NAND] Split nand_scan() into two parts; allow board driver to interveneDavid Woodhouse1-0/+5
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-06-29MTD: kernel-doc fixes + additionsRandy Dunlap1-3/+0
Fix some kernel-doc typos/spellos. Use kernel-doc syntax in places where it was almost used. Correct/add struct, struct field, and function param names where needed. Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-06-29MTD: fix all kernel-doc warningsRandy Dunlap1-3/+10
Fix all kernel-doc warnings in MTD headers and source files: - add some missing struct fields; - correct some function parameter names; - use kernel-doc format for function doc. headers; - nand_ecc.c contains only exported interfaces, no internal ones; Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-06-20Merge git://git.infradead.org/hdrcleanup-2.6Linus Torvalds1-1/+0
* git://git.infradead.org/hdrcleanup-2.6: (63 commits) [S390] __FD_foo definitions. Switch to __s32 types in joystick.h instead of C99 types for consistency. Add <sys/types.h> to headers included for userspace in <linux/input.h> Move inclusion of <linux/compat.h> out of user scope in asm-x86_64/mtrr.h Remove struct fddi_statistics from user view in <linux/if_fddi.h> Move user-visible parts of drivers/s390/crypto/z90crypt.h to include/asm-s390 Revert include/media changes: Mauro says those ioctls are only used in-kernel(!) Include <linux/types.h> and use __uXX types in <linux/cramfs_fs.h> Use __uXX types in <linux/i2o_dev.h>, include <linux/ioctl.h> too Remove private struct dx_hash_info from public view in <linux/ext3_fs.h> Include <linux/types.h> and use __uXX types in <linux/affs_hardblocks.h> Use __uXX types in <linux/divert.h> for struct divert_blk et al. Use __u32 for elf_addr_t in <asm-powerpc/elf.h>, not u32. It's user-visible. Remove PPP_FCS from user view in <linux/ppp_defs.h>, remove __P mess entirely Use __uXX types in user-visible structures in <linux/nbd.h> Don't use 'u32' in user-visible struct ip_conntrack_old_tuple. Use __uXX types for S390 DASD volume label definitions which are user-visible S390 BIODASDREADCMB ioctl should use __u64 not u64 type. Remove unneeded inclusion of <linux/time.h> from <linux/ufs_fs.h> Fix private integer types used in V4L2 ioctls. ... Manually resolve conflict in include/linux/mtd/physmap.h
2006-06-20[MTD] NAND: Fix breakage all over the placeThomas Gleixner1-1/+11
Following problems are addressed: - wrong status caused early break out of nand_wait() - removed the bogus status check in nand_wait() which is a relict of the abandoned support for interrupted erase. - status check moved to the correct place in read_oob - oob support for syndrom based ecc with strange layouts - use given offset in the AUTOOOB based oob operations Partially based on a patch from Vitaly Vool <vwool@ru.mvista.com> Thanks to Savin Zlobec <savin@epico.si> for tracking down the status problem. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2006-05-29[MTD] Rework the out of band handling completelyThomas Gleixner1-8/+2
Hopefully the last iteration on this! The handling of out of band data on NAND was accompanied by tons of fruitless discussions and halfarsed patches to make it work for a particular problem. Sufficiently annoyed by I all those "I know it better" mails and the resonable amount of discarded "it solves my problem" patches, I finally decided to go for the big rework. After removing the _ecc variants of mtd read/write functions the solution to satisfy the various requirements was to refactor the read/write _oob functions in mtd. The major change is that read/write_oob now takes a pointer to an operation descriptor structure "struct mtd_oob_ops".instead of having a function with at least seven arguments. read/write_oob which should probably renamed to a more descriptive name, can do the following tasks: - read/write out of band data - read/write data content and out of band data - read/write raw data content and out of band data (ecc disabled) struct mtd_oob_ops has a mode field, which determines the oob handling mode. Aside of the MTD_OOB_RAW mode, which is intended to be especially for diagnostic purposes and some internal functions e.g. bad block table creation, the other two modes are for mtd clients: MTD_OOB_PLACE puts/gets the given oob data exactly to/from the place which is described by the ooboffs and ooblen fields of the mtd_oob_ops strcuture. It's up to the caller to make sure that the byte positions are not used by the ECC placement algorithms. MTD_OOB_AUTO puts/gets the given oob data automaticaly to/from the places in the out of band area which are described by the oobfree tuples in the ecclayout data structre which is associated to the devicee. The decision whether data plus oob or oob only handling is done depends on the setting of the datbuf member of the data structure. When datbuf == NULL then the internal read/write_oob functions are selected, otherwise the read/write data routines are invoked. Tested on a few platforms with all variants. Please be aware of possible regressions for your particular device / application scenario Disclaimer: Any whining will be ignored from those who just contributed "hot air blurb" and never sat down to tackle the underlying problem of the mess in the NAND driver grown over time and the big chunk of work to fix up the existing users. The problem was not the holiness of the existing MTD interfaces. The problems was the lack of time to go for the big overhaul. It's easy to add more mess to the existing one, but it takes alot of effort to go for a real solution. Improvements and bugfixes are welcome! Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2006-05-29[MTD] NAND Replace oobinfo by ecclayoutThomas Gleixner1-4/+5
The nand_oobinfo structure is not fitting the newer error correction demands anymore. Replace it by struct nand_ecclayout and fixup the users all over the place. Keep the nand_oobinfo based ioctl for user space compability reasons. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2006-05-29[MTD] NAND Fix platform structure and NDFC driverThomas Gleixner1-1/+3
The platform structure was lacking an oobinfo field. The NDFC driver had some remains from another tree. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2006-05-26[MTD] NAND modularize write functionThomas Gleixner1-26/+45
Modularize the write function and reorganaize the internal buffer management. Remove obsolete chip options and fixup all affected users. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2006-05-25[MTD] NAND Modularize read functionThomas Gleixner1-8/+8
Split the core of the read function out and implement seperate handling functions for software and hardware ECC. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2006-05-25[MTD] NAND Add read/write function pointers to struct nand_ecc_ctrlThomas Gleixner1-0/+13
Add read/write function pointers to struct nand_ecc_ctrl to prepare the modulaization of nand_read/write functions. The current implementation handles every type of ecc mode software/hardware and all kinds of strange ecc placement schemes in one switch/if construct. Thats too complex to maintain and too inflexible to expand. Modularization will also shorten the code pathes of the read/write functions. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2006-05-25[MTD] NAND Introduce NAND_NO_READRDY optionThomas Gleixner1-0/+4
The nand driver has a superflous read ready / command delay in the read functions. This was added to handle chips which have an automatic read forward. Newer chips do not have this functionality anymore. Add this option to avoid the delay / I/O operation. Mark all large page chips with the new option flag. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2006-05-23[MTD] NAND remove write_byte/word function from nand_chipThomas Gleixner1-5/+0
The previous change of the command / hardware control allows to remove the write_byte/word functions completely, as their only user were nand_command and nand_command_lp. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2006-05-23[MTD] Refactor NAND hwcontrol to cmd_ctrlThomas Gleixner1-16/+17
The hwcontrol function enforced a step by step state machine for any kind of hardware chip access. Let the hardware driver know which control bits are set and inform it about a change of the control lines. Let the hardware driver write out the command and address bytes directly. This gives a peformance advantage for address bus controlled chips and simplifies the quirks in the hardware drivers. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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