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* mfd: have TMIO drivers and subdevices depend on ARMSamuel Ortiz2008-08-101-1/+1
| | | | | | | | | The TMIO chips are only found (and thus tested) on ARM machines. Moreover, we don't want the TMIO cells to be built if one of the TMIO driver is not selected (which indirectly make the TMIO cells drivers depend on ARM as well). Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
* mfd: driver for the TMIO NAND controllerIan Molton2008-08-103-0/+564
| | | | | | | | | This patch adds support for the NAND controller commonly found in TMIO based MFDs. Signed-off-by: Ian Molton <spyro@f2s.com> Acked-By: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
* [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/machRussell King2008-08-0720-31/+31
| | | | | | This just leaves include/asm-arm/plat-* to deal with. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixesRussell King2008-08-078-129/+249
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| * Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2008-08-031-1/+1
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: [ARM] 5182/1: pxa: Fix pcm990 compilation [ARM] Fix explicit asm(-arm)?/arch-foo references [ARM] move include/asm-arm to arch/arm/include/asm [ARM] Remove explicit dependency for misc.o from compressed/Makefile [ARM] initrd: claim initrd memory exclusively [ARM] pxa: add support for L2 outer cache on XScale3 (attempt 2) [ARM] 5180/1: at91: Fix at91_nand -> atmel_nand rename fallout [ARM] add Sascha Hauer as Freescale i.MX Maintainer [ARM] i.MX: add missing clock functions exports [ARM] i.MX: remove set_imx_fb_info() export [ARM] mx1ads: make mmc platform data available for modules [ARM] mx2: add missing Kconfig dependency
| * | [MTD] Fix !CONFIG_BLOCK compile for mtdsuper.cDavid Woodhouse2008-08-021-5/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As reported by Adrian Bunk, commit d5686b444ff3f72808d2b3fbd58672a86cdf38e7 (switch mtd and dm-table to lookup_bdev()) causes the following compile error with CONFIG_BLOCK=n: CC drivers/mtd/mtdsuper.o drivers/mtd/mtdsuper.c: In function `get_sb_mtd': drivers/mtd/mtdsuper.c:184: error: implicit declaration of function 'lookup_bdev' drivers/mtd/mtdsuper.c:184: warning: assignment makes pointer from integer without a cast drivers/mtd/mtdsuper.c:197: error: implicit declaration of function 'bdput' make[3]: *** [drivers/mtd/mtdsuper.o] Error 1 Fix it by putting the block device lookup inside #ifdef CONFIG_BLOCK Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | Merge git://git.infradead.org/mtd-2.6Linus Torvalds2008-08-017-106/+230
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.infradead.org/mtd-2.6: [MTD] [NAND] drivers/mtd/nand/nandsim.c: fix printk warnings [MTD] [NAND] Blackfin NFC Driver: Cleanup the error exit path of bf5xx_nand_probe function [MTD] [NAND] Blackfin NFC Driver: use standard dev_err() rather than printk() [MTD] [NAND] Blackfin NFC Driver: enable Blackfin nand HWECC support by default [MTD] [NAND] Blackfin NFC Driver: add proper devinit/devexit markings to probe/remove functions [MTD] [NAND] Blackfin NFC Driver: add support for the ECC layout the Blackfin bootrom uses [MTD] [NAND] Blackfin NFC Driver: fix bug - hw ecc calc by making sure we extract 11 bits from each register instead of 10 [MTD] [NAND] Blackfin NFC Driver: fix bug - do not clobber the status from the first 256 bytes if operating on 512 pages [MTD] [NAND] diskonchip.c fix sparse endian warnings [MTD] [NAND] drivers/mtd/nand/nandsim.c needs div64.h [JFFS2] Fix allocation of summary buffer Fix rename of at91_nand -> atmel_nand [MTD] [NOR] drivers/mtd/chips/jedec_probe.c: fix Am29DL800BB device ID [MTD] MTD_DEBUG always does compile-time typechecks [MTD] DataFlash: bugfix, binary page sizes now handled [MTD] [NAND] fsl_elbc_nand.c: fix printk warning [MTD] [NAND] nandsim: support random page read command [MTD] [NAND] fix subpage read for small page NAND
| | * | [MTD] [NAND] drivers/mtd/nand/nandsim.c: fix printk warningsAndrew Morton2008-08-011-3/+5
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| | * | [MTD] [NAND] Blackfin NFC Driver: Cleanup the error exit path of ↵Bryan Wu2008-08-011-14/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | bf5xx_nand_probe function Signed-off-by: Bryan Wu <cooloney@kernel.org> Cc: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| | * | [MTD] [NAND] Blackfin NFC Driver: use standard dev_err() rather than printk()Mike Frysinger2008-08-011-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| | * | [MTD] [NAND] Blackfin NFC Driver: enable Blackfin nand HWECC support by defaultMike Frysinger2008-08-011-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| | * | [MTD] [NAND] Blackfin NFC Driver: add proper devinit/devexit markings to ↵Mike Frysinger2008-08-011-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | probe/remove functions Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| | * | [MTD] [NAND] Blackfin NFC Driver: add support for the ECC layout the ↵Mike Frysinger2008-08-012-0/+52
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Blackfin bootrom uses Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| | * | [MTD] [NAND] Blackfin NFC Driver: fix bug - hw ecc calc by making sure we ↵Mike Frysinger2008-08-011-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | extract 11 bits from each register instead of 10 Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| | * | [MTD] [NAND] Blackfin NFC Driver: fix bug - do not clobber the status from ↵Mike Frysinger2008-08-011-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | the first 256 bytes if operating on 512 pages Singed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| | * | [MTD] [NAND] diskonchip.c fix sparse endian warningsHarvey Harrison2008-08-011-15/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| | * | [MTD] [NAND] drivers/mtd/nand/nandsim.c needs div64.hAndrew Morton2008-08-011-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | drivers/mtd/nand/nandsim.c: In function 'divide': drivers/mtd/nand/nandsim.c:462: error: implicit declaration of function 'do_div' Cc: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| | * | [MTD] [NOR] drivers/mtd/chips/jedec_probe.c: fix Am29DL800BB device IDJerry Hicks2008-07-311-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The device id for Am29DL800BB in jedec_probe.c is wrong. Reference: http://www.spansion.com/datasheets/21519c4.pdf I discovered this while working with u-boot. The u-boot folks mentioned Linux as an upstream reference, thought I'd post a heads-up here too. Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| | * | [MTD] DataFlash: bugfix, binary page sizes now handledakpm@linux-foundation.org2008-07-301-47/+83
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The wrong version of the "teach dataflash about binary density" patch just got merged (v2 not v3) ... this restores the missing updates: * Fix the cmdlinepart *regression* that caused testing failures (!!) by restoring the original part labels in relevant cases. * Don't reference things that don't exist (!) - An opcode that doesn't even exist for DataFlash - The part is "at45db642" not "at45db641" - ID zero in this JEDEC table * Make the JEDEC probe routine report and handle errors better: - If the SPI calls fail, return the error codes. - Don't depend on ordering of table entries. - Unrecognized ids are different from parts that have no ID. We won't actually know how to handle them correctly; display the ID and ignore the chip. * Move the original block comment about the "legacy" chip ID scheme back next to the code to which it applies ... not next to the new JEDEC query code, which uses an entirely different strategy. * Don't print a guessed erasesize; /proc/mtd has the real value. And add a few more comments. 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>
| | * | [MTD] [NAND] fsl_elbc_nand.c: fix printk warningakpm@linux-foundation.org2008-07-301-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | drivers/mtd/nand/fsl_elbc_nand.c:890: warning: format '%x' expects type 'unsigned int', but argument 3 has type 'resource_size_t' Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| | * | [MTD] [NAND] nandsim: support random page read commandArtem Bityutskiy2008-07-301-17/+40
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 3d45955962496879dead8d4dd70bb9a23b07154b ("subpage read feature as a way to improve performance") broke nandsim because nandsim does not support the "random page read" NAND command. This patch adds corresponding support. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | [PATCH] switch mtd and dm-table to lookup_bdev()Al Viro2008-08-011-22/+11
| |/ / | | | | | | | | | | | | | | | No need to open-code it... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | / [ARM] Remove asm/hardware.h, use asm/arch/hardware.h insteadRussell King2008-08-0710-10/+10
| |/ |/| | | | | | | | | | | | | | | Remove includes of asm/hardware.h in addition to asm/arch/hardware.h. Then, since asm/hardware.h only exists to include asm/arch/hardware.h, update everything to directly include asm/arch/hardware.h and remove asm/hardware.h. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [ARM] Fix explicit asm(-arm)?/arch-foo referencesRussell King2008-08-021-1/+1
|/ | | | | | | | No file should be explicitly referencing its own platform headers by specifying an absolute include path. Fix these paths to use standard <asm/arch/...> includes. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* Merge git://git.infradead.org/mtd-2.6Linus Torvalds2008-07-26122-984/+1324
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.infradead.org/mtd-2.6: (57 commits) [MTD] [NAND] subpage read feature as a way to increase performance. CPUFREQ: S3C24XX NAND driver frequency scaling support. [MTD][NAND] au1550nd: remove unused variable [MTD] jedec_probe: Fix SST 16-bit chip detection [MTD][MTDPART] Fix a division by zero bug [MTD][MTDPART] Cleanup and document the erase region handling [MTD][MTDPART] Handle most checkpatch findings [MTD][MTDPART] Seperate main loop from per-partition code in add_mtd_partition [MTD] physmap: resume already suspended chips on failure to suspend [MTD] physmap: Fix suspend/resume/shutdown bugs. [MTD] [NOR] Fix -ETIMEO errors in CFI driver [MTD] [NAND] fsl_elbc_nand: fix section mismatch with CONFIG_MTD_OF_PARTS=y [JFFS2] Use .unlocked_ioctl [MTD] Fix const assignment in the MTD command line partitioning driver [MTD] [NOR] gen_probe: No debug message when debugging is disabled [MTD] [NAND] remove __PPC__ hardcoded address from DiskOnChip drivers [MTD] [MAPS] Remove the bast-flash driver. [MTD] [NAND] fsl_elbc_nand: ecclayout cleanups [MTD] [NAND] fsl_elbc_nand: implement support for flash-based BBT [MTD] [NAND] fsl_elbc_nand: fix OOB workability for large page NAND chips ...
| * [MTD] [NAND] subpage read feature as a way to increase performance. Alexey Korolev2008-07-251-1/+86
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * Merge branch 'linux-next' of git://git.infradead.org/~dedekind/ubi-2.6David Woodhouse2008-07-2527-767/+1041
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| * | CPUFREQ: S3C24XX NAND driver frequency scaling support.Ben Dooks2008-07-251-21/+122
| | | | | | | | | | | | | | | | | | | | | Add support for CPU frequency scalling to the S3C24XX NAND driver. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | [MTD][NAND] au1550nd: remove unused variableYoichi Yuasa2008-07-251-2/+0
| | | | | | | | | | | | | | | | | | | | | Remove unused variable from au1550 NAND driver. Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | [MTD] jedec_probe: Fix SST 16-bit chip detectionAtsushi Nemoto2008-07-251-4/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The unlock_addr rework in kernel 2.6.25 breaks 16-bit SST chips. SST 39LF160 and SST 39VF1601 are both 16-bit only chip (do not have BYTE# pin) and new uaddr value is not correct for them. Add MTD_UADDR_0xAAAA_0x5555 for those chips. Tested with SST 39VF1601 chip. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | [MTD][MTDPART] Fix a division by zero bugAtsushi Nemoto2008-07-251-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | When detecting a partition beyond the end of the device, skip most of the initialisation, in particular those bits causing a division by zero. Signed-off-by: Jörn Engel <joern@logfs.org> Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | [MTD][MTDPART] Cleanup and document the erase region handlingAtsushi Nemoto2008-07-251-4/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | Mostly simplifying the loops. Now everything fits into 80 columns, is easier to read and the finer details have extra comments. Signed-off-by: Jörn Engel <joern@logfs.org> Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | [MTD][MTDPART] Handle most checkpatch findingsAtsushi Nemoto2008-07-251-64/+65
| | | | | | | | | | | | | | | | | | | | | | | | | | | Remaining are 12 warnings about long lines and 1 about braces that could be argued about. Signed-off-by: Jörn Engel <joern@logfs.org> Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | [MTD][MTDPART] Seperate main loop from per-partition code in add_mtd_partitionAtsushi Nemoto2008-07-251-158/+166
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | add_mtd_partition was a 150+ line monster consisting mostly of a single loop. Seperate the loop from most of the body. Now it should be obvious which variables are carried around from iteration to iteration. Signed-off-by: Jörn Engel <joern@logfs.org> Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | [MTD] physmap: resume already suspended chips on failure to suspendUwe Kleine-König2008-07-251-2/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | A nice side effect of this patch is that the return value of physmap_flash_suspend in the error path is the value of the first failing suspend callback and not the bitwise OR of all of them. Signed-off-by: Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | [MTD] physmap: Fix suspend/resume/shutdown bugs.Robert Jarzmik2008-07-251-4/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Don't call suspend/resume functions if they have not been defined. Signed-off-by: Robert Jarzmik <rjarzmik@free.fr> Acked-By: Jörn Engel <joern@logfs.org> Signed-off-by: Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | [MTD] [NOR] Fix -ETIMEO errors in CFI driverAlexey Korolev2008-07-251-1/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Existing CFI driver has problems with excessive writes during erase. If CFI driver does many writes during one erase cycle we may face the messages with -ETIMEO error on erase operation. It may cause the following data corruption and kernel panics. The reason of the issue is related to specifics of suspend operation: if we write to flash during erase, suspend operation will cost some time to erase procedure (for P30 it could be significant). In current version of cfi driver the problem of many suspends is partially workarounded by adding some time reserv to any operation (8xerase_time) but if we have many writes during one erase the problem appears. This patch detects the suspend and resets timer if suspend occured. It has been well verified on different chips. No problems were found. Could you please include the patch as it is simple and fixes bad issue. Signed-off-by: Alexey Korolev <akorolev@infradead.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | [MTD] [NAND] fsl_elbc_nand: fix section mismatch with CONFIG_MTD_OF_PARTS=yAnton Vorontsov2008-07-251-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With CONFIG_MTD_OF_PARTS=y I'm getting this new section mismatch in reference from the function fsl_elbc_chip_probe() to the function .devinit.text:of_mtd_parse_partitions() This patch fixes the mismatch by providing __devinit annotation to the fsl_elbc_chip_probe() function. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Acked-By: Scott Wood <scottwood@freescale.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | [MTD] Fix const assignment in the MTD command line partitioning driverDavid Howells2008-07-111-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | Fix const to non-const pointer assignment in the MTD command line partitioning driver. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | [MTD] [NOR] gen_probe: No debug message when debugging is disabledJean Delvare2008-07-111-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | Use pr_debug(...) instead of printk(KERN_DEBUG ...) so that the message is only printed when debugging is enabled. Signed-off-by: Jean Delvare <khali@linux-fr.org> Tested-by: John stoffel <john@stoffel.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | [MTD] [NAND] remove __PPC__ hardcoded address from DiskOnChip driversMilton Miller2008-07-112-4/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Such a hardcoded address can cause a checkstop or machine check if the driver is in the kernel but the address is not acknowledged. Both drivers allow an address to be specified as either a module parameter or config option. Any future powerpc board should either use one of these methods or find the address in the device tree. Signed-off-by: Milton Miller <miltonm@bga.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | [MTD] [MAPS] Remove the bast-flash driver.Ben Dooks2008-07-113-243/+0
| | | | | | | | | | | | | | | | | | | | | | | | Remove the Simtec BAST flash driver as this has been replaced by using the platform flash driver. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | [MTD] [NAND] fsl_elbc_nand: ecclayout cleanupsAnton Vorontsov2008-07-111-6/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch deletes oobavail assignments, they're calculated by the nand core code in nand_scan_tail, plus current oobavail values are wrong for the LP NANDs. Also remove mtd->ecclayout and mtd->oobavail assignments, mtd core handles this all by itself. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | [MTD] [NAND] fsl_elbc_nand: implement support for flash-based BBTAnton Vorontsov2008-07-111-1/+33
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch implements support for flash-based BBT for chips working through ELBC NAND controller, so that NAND core will not have to re-scan for bad blocks on every boot. Because ELBC controller may provide HW-generated ECCs we should adjust bbt pattern and bbt version positions in the OOB free area. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Acked-by: Scott Wood <scottwood@freescale.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | [MTD] [NAND] fsl_elbc_nand: fix OOB workability for large page NAND chipsAnton Vorontsov2008-07-111-0/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For large page chips, nand_bbt is looking into OOB area, and checking for "0xff 0xff" pattern at OOB offset 0. That is, two bytes should be reserved for bbt means. But ELBC driver is specifying ecclayout so that oobfree area starts at offset 1, so only one byte left for the bbt purposes. This causes problems with any OOB users, namely JFFS2: after first mount JFFS2 will fill all OOBs with "erased marker", so OOBs will contain: OOB Data: ff 19 85 20 03 00 ff ff ff 00 00 08 ff ff ff ff OOB Data: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff OOB Data: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff OOB Data: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff And on the next boot, NAND core will rescan for bad blocks, then will see "0xff 0x19" pattern, and will mark all blocks as bad ones. To fix the issue we should implement our own bad block pattern: just one byte at OOB start. Though, this will work only for x8 chips. For x16 chips two bytes must be checked. Since ELBC driver does not support x16 NANDs (yet), we're safe for now. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Acked-by: Scott Wood <scottwood@freescale.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | [MTD] [NAND] atmel_nand can be modularDavid Brownell2008-07-111-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There's no reason to prevent the Atmel NAND driver from building as a module. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Håvard Skinnemoen <haavard.skinnemoen@atmel.com> Acked-by: Andrew Victor <linux@maxim.org.za> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | [MTD] [NAND] atmel_nand: Work around AT32AP7000 ECC erratumHaavard Skinnemoen2008-07-111-2/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The ALE signal isn't correctly wired up to the ECC controller on the AP7000, so it starts calculating ECC during the address cycles. Work around this by resetting the ECC controller between the address and data cycles. Signed-off-by: Håvard Skinnemoen <haavard.skinnemoen@atmel.com> Acked-by: Andrew Victor <linux@maxim.org.za> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | [MTD] [NAND] atmel_nand speedup via {read,write}s{b,w}()David Brownell2008-07-111-5/+41
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This uses __raw_{read,write}s{b,w}() primitives to access data on NAND chips for more efficient I/O. On an arm926 with memory clocked at 100 MHz, this reduced the elapsed time for a 64 MiB read by 16%. ("dd" /dev/mtd0 to /dev/null, with an 8-bit NAND using hardware ECC and 128KiB blocksize.) Also some minor section tweaks: - Use platform_driver_probe() so no pointer to probe() lingers after that code has been removed at run-time. - Use __exit and __exit_p so the remove() code will normally be removed by the linker. Since these buffer read/write calls are new, this increases the runtime code footprint (by 88 bytes on my build, after the section tweaks). [haavard.skinnemoen@atmel.com: rebase onto atmel_nand rename] Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Håvard Skinnemoen <haavard.skinnemoen@atmel.com> Acked-by: Andrew Victor <linux@maxim.org.za> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | [MTD] mtdchar.c remove shadowed variable warningsHarvey Harrison2008-07-111-9/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use einfo, oinfo for the inner erase_info and otp_info structs used in individual case statements. drivers/mtd/mtdchar.c:582:26: warning: symbol 'info' shadows an earlier one drivers/mtd/mtdchar.c:380:23: originally declared here drivers/mtd/mtdchar.c:596:26: warning: symbol 'info' shadows an earlier one drivers/mtd/mtdchar.c:380:23: originally declared here drivers/mtd/mtdchar.c:704:19: warning: symbol 'info' shadows an earlier one drivers/mtd/mtdchar.c:380:23: originally declared here Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | [MTD] mtdchar.c silence sparse warningHarvey Harrison2008-07-111-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The copy_to_user was casting away the address space to get the offset of the length member. Use offsetof() instead and add it to the void __user *argp. drivers/mtd/mtdchar.c:527:23: warning: cast removes address space of expression drivers/mtd/mtdchar.c:527:23: warning: incorrect type in argument 1 (different address spaces) drivers/mtd/mtdchar.c:527:23: expected void [noderef] <asn:1>*to drivers/mtd/mtdchar.c:527:23: got unsigned int *<noident> Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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