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path: root/drivers/mtd/nand/au1550nd.c
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* [MTD NAND] Remove old code in au1550nd.cMichal Piotrowski2006-09-221-11/+0
| | | | | | Signed-off-by: Michal Piotrowski <michal.k.k.piotrowski@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* [MTD] NAND remove write_byte/word function from nand_chipThomas Gleixner2006-05-231-23/+8
| | | | | | | | 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>
* [MTD] Refactor NAND hwcontrol to cmd_ctrlThomas Gleixner2006-05-231-7/+18
| | | | | | | | | | | | 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>
* Merge branch 'master' of /home/tglx/work/kernel/git/mtd-2.6/Thomas Gleixner2006-05-231-2/+2
|\ | | | | | | Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * [MTD] Introduce writesizeJoern Engel2006-05-221-2/+2
| | | | | | | | | | | | | | | | At least two flashes exists that have the concept of a minimum write unit, similar to NAND pages, but no other NAND characteristics. Therefore, rename the minimum write unit to "writesize" for all flashes, including NAND. Signed-off-by: Joern Engel <joern@wh.fh-wedel.de>
* | [MTD] NAND modularize ECCThomas Gleixner2006-05-231-1/+1
|/ | | | | | | | First step of modularizing ECC support. - Move ECC related functionality into a seperate embedded data structure - Get rid of the hardware dependend constants to simplify new ECC models Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* NAND: Fix NAND ECC errors on AMD Au1550Sergei Shtylyov2006-05-161-0/+139
| | | | | | | | | | | | | | | | | | | | | | | | | | | On AMD Au1550 the static bus controller fails to keep -CE asserted during chip ready delay on read commands and the NAND chip being used requires this. So, the current driver allows nand_base.c to drive -CE manually during the entire sector read. When the PCMCIA driver is enabled however, occasionally the ECC errors occur on NAND reads. This happens because the PCMCIA driver polls sockets periodically and reads one of the board's control/status regs (BCSRs) which are on the same static bus as the NAND flash, and just use another chip select (and the NOR flash also resides on that bus), so as the NAND driver forces NAND chip select asserted and the -RE signal is shared, a contention occurs on the static bus when BCSR or NOR flash is read while we're reading from NAND. So, we either can't keep interrupts enabled during the whole NAND sector read (which is hardly acceptable), or have to implement some interlocking scheme between multiple drivers (which is painful, and makes me shudder :-). There's a third way which has proven to work: to force -CE asserted only while we're waiting for a NAND chip to become ready after a read command, disabling interrupts for a maximum of 25 microseconds (according to Toshiba TC58DVM92A1FT00 datasheet -- this chip is mentioned in the board schematics); for Samsung NAND chip which seems to be actually used this delay is even less, 12 us. Signed-off-by: Konstantin Baydarov <kbaidarov@ru.mvista.com> Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* NAND: AMD Au1550 driver reads write-only registerSergei Shtylyov2006-05-161-4/+2
| | | | | | | | | | | | | | During the last cleanup of the AMD Au1550 NAND driver the old buglet was reintroduced: as the MEM_STNDCTL register is write-only and seem to always read as 0x31, read-modify-write to it done in au1xxx_nand_init() will have the side effect of enabling -RCS0/1 pin override (via bits 4/5 of this reg.), thus possibly causing a contention on the static bus when the NOR flash (using -RCS0) or board control status registers (using -RCS2) are read. Luckily, this goes away with a first NAND access, since au1550_hwcontrol() doesn't try to read this register before writing anymore. Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* [MTD NAND] Make various initfuncs static, remove #ifdef MODULE from exitfuncsDavid Woodhouse2006-05-161-3/+1
| | | | | | | We all inherited the same error from the original NAND board driver which got copied and changed. Fix them all at once... Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* [MTD] Fix module refcounting in NAND board drivers.David Woodhouse2006-05-141-0/+1
| | | | | | | | | The _board_ driver needs to be mtd->owner, and it in turn pins the nand.ko module. Fix them all to actually do that, and fix nand.ko not to overwrite it -- and also to check that the caller sets it, if the caller is a module. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* [MTD NAND] Indent all of drivers/mtd/nand/*.c.David Woodhouse2006-05-131-70/+73
| | | | | | It was just too painful to deal with. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* [PATCH] drivers/mtd: Use ARRAY_SIZE macroTobias Klauser2006-03-311-3/+1
| | | | | | | | | | | Use ARRAY_SIZE macro instead of sizeof(x)/sizeof(x[0]) and remove duplicates of the macro. Signed-off-by: Tobias Klauser <tklauser@nuerscht.ch> Cc: Thomas Gleixner <tglx@linutronix.de> Acked-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] turn "const static" into "static const"Jesper Juhl2006-01-101-1/+1
| | | | | | | | | | | | | ICC likes to complain about storage class not being first, GCC doesn't care much (except for cases like "inline static"). have a hard time seeing how it could break anything. Thanks to Gabriel A. Devenyi for pointing out http://linuxicc.sourceforge.net/ which is what made me create this patch. Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] changing CONFIG_LOCALVERSION rebuilds too much, for no good reasonOlaf Hering2005-11-091-0/+1
| | | | | | | | | | | | | | | | | | | | | This patch removes almost all inclusions of linux/version.h. The 3 #defines are unused in most of the touched files. A few drivers use the simple KERNEL_VERSION(a,b,c) macro, which is unfortunatly in linux/version.h. There are also lots of #ifdef for long obsolete kernels, this was not touched. In a few places, the linux/version.h include was move to where the LINUX_VERSION_CODE was used. quilt vi `find * -type f -name "*.[ch]"|xargs grep -El '(UTS_RELEASE|LINUX_VERSION_CODE|KERNEL_VERSION|linux/version.h)'|grep -Ev '(/(boot|coda|drm)/|~$)'` search pattern: /UTS_RELEASE\|LINUX_VERSION_CODE\|KERNEL_VERSION\|linux\/\(utsname\|version\).h Signed-off-by: Olaf Hering <olh@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [MTD] NAND: Clean up trailing white spacesThomas Gleixner2005-11-071-29/+29
| | | | Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* [MTD] NAND: Alchemy board driver cleanupPete Popov2005-11-061-46/+69
| | | | | | | | | | - cleaned up the partitions and include files - added more flexible CS and address detection and setup Regression tested on db1200 and db1550. Signed-off-by: Pete Popov <ppopov@pacbell.net> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* Linux-2.6.12-rc2Linus Torvalds2005-04-161-0/+477
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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