Commit Graph

966 Commits

Author SHA1 Message Date
Thomas Gleixner 04bbd0eafb [MTD] NAND Initialize controller lock and wq only once
The lock simplifying patch did not move the lock and waitqueue
initialization into the controller allocation patch.
This reinitializes waitqueue and spinlocks also for driver
supplied controller stuctures. Move it into the allocation path.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2006-05-25 12:45:26 +01:00
Thomas Gleixner 12efdde313 [MTD] NAND fix cmd_ctrl breakage
The cmd_ctrl rework lacks some state transition flags.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2006-05-24 23:45:24 +01:00
Thomas Gleixner ace4dfee56 [MTD] NAND coding style and namespace cleanup
Cleanup the functions which are not going to change in the
next steps.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2006-05-24 23:45:24 +01:00
Thomas Gleixner d470a97c70 [MTD] NAND LED support cleanup
Move the define out of the middle of the code and add an
appropriate comment.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2006-05-23 23:48:57 +02:00
Thomas Gleixner cad74f2c38 [MTD] NAND remove write_byte/word function from nand_chip
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 23:28:48 +02:00
Thomas Gleixner 7abd3ef987 [MTD] Refactor NAND hwcontrol to cmd_ctrl
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>
2006-05-23 23:25:53 +02:00
Thomas Gleixner 3821720d51 [MTD] Export nand_write_raw
The previous _ecc removal / cleanup broke (i)nftl module usage.
Export the missing symbol.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2006-05-23 22:33:52 +02:00
Thomas Gleixner 85b85fee0c [MTD] Mark NAND drivers TOTO and PPChameleon broken
Both drivers can not be fixed and compiled due to missing header files.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2006-05-23 22:03:39 +02:00
Thomas Gleixner 9223a456da [MTD] Remove read/write _ecc variants
MTD clients are agnostic of FLASH which needs ECC suppport.
Remove the functions and fixup the callers.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2006-05-23 17:21:03 +02:00
Thomas Gleixner 2528e8cdf3 [MTD] Remove readv/readv_ecc
These functions were never implemented and added only bloat to
partition and concat code.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2006-05-23 16:10:00 +02:00
Thomas Gleixner 9d8522df37 [MTD] Remove nand writev support
NAND writev(_ecc) support is not longer necessary. Remove it.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2006-05-23 16:06:03 +02:00
Thomas Gleixner 0cddd6c258 [MTD] ECC rework broke diskonchip
Fix the diskonchip ecc setup.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2006-05-23 15:59:58 +02:00
Thomas Gleixner 4cbb9b80e1 Merge branch 'master' of /home/tglx/work/kernel/git/mtd-2.6/
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2006-05-23 12:37:31 +02:00
Thomas Gleixner 6dfc6d250d [MTD] NAND modularize ECC
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>
2006-05-23 12:00:46 +02:00
Thomas Gleixner 7aa65bfd67 [MTD] NAND cleanup nand_scan
Seperate functionality out of nand_scan so the code is more
readable. No functional change. First step of simplifying
the nand driver.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2006-05-23 11:54:38 +02:00
Thomas Gleixner 58dd8f2bfd [MTD] NAND consolidate data types
The NAND driver used a mix of unsigned char, u_char amd uint8_t
data types. Consolidate to uint8_t usage

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2006-05-23 11:52:35 +02:00
Thomas Gleixner 2c0a2bed92 [MTD] NAND whitespace and formatting cleanup
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2006-05-23 11:50:56 +02:00
Thomas Gleixner ce4c61f184 [MTD] Add support for NDFC NAND controller
NDFC NAND Flash controller is embedded in PPC EP44x SoCs.
Add platform driver based support.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2006-05-23 11:43:28 +02:00
Thomas Gleixner a36ed2995c [MTD] Simplify NAND locking
Replace the chip lock by a the controller lock. For simple drivers a
dummy controller structure is created by the scan code.
This simplifies the locking algorithm in nand_get/release_chip().

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2006-05-23 11:37:03 +02:00
Thomas Gleixner 819d6a32c3 [MTD] Improve software ECC calculation
Unrolling the loops produces denser and much faster code.
Add a config switch which allows to select the byte order of the
resulting ecc code. The current Linux implementation has a byte
swap versus the SmartMedia specification

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2006-05-23 11:32:45 +02:00
Joern Engel 5fa433942b [MTD] Introduce MTD_BIT_WRITEABLE
o Add a flag MTD_BIT_WRITEABLE for devices that allow single bits to be
  cleared.
o Replace MTD_PROGRAM_REGIONS with a cleared MTD_BIT_WRITEABLE flag for
  STMicro and Intel Sibley flashes with internal ECC.  Those flashes
  disallow clearing of single bits, unlike regular NOR flashes, so the
  new flag models their behaviour better.
o Remove MTD_ECC.  After the STMicro/Sibley merge, this flag is only set
  and never checked.

Signed-off-by: Joern Engel <joern@wh.fh-wedel.de>
2006-05-22 23:18:29 +02:00
Joern Engel 28318776a8 [MTD] Introduce writesize
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>
2006-05-22 23:18:05 +02:00
Jonathan McDowell 3d12c0c75d [MTD] Add Amstrad Delta NAND support
The patch below adds support for the NAND device on the Amstrad Delta.
This is a 32MiB 8bit Toshiba device, with the data bus connected to the
OMAP MPUIO pins and ALE, CLE, NCE, NRE, NWE and NWP all connected to the
Delta's latch2 16bit latch.

Signed-Off-By: Jonathan McDowell <noodles@earth.li>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-05-21 18:11:55 +01:00
Sergei Shtylyov 35af68b53a NAND: Fix NAND ECC errors on AMD Au1550
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>
2006-05-16 18:03:18 +01:00
Sergei Shtylyov 155285c477 NAND: AMD Au1550 driver reads write-only register
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>
2006-05-16 17:25:19 +01:00
David Woodhouse cead4dbc03 [MTD NAND] Make various initfuncs static, remove #ifdef MODULE from exitfuncs
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>
2006-05-16 13:54:50 +01:00
David Woodhouse f41a5f804a [MTD] Add help text for MTD_NAND_CS553X option.
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-05-16 13:11:47 +01:00
David Woodhouse 52239da1b0 [MTD NAND] Modify check for modules registering NAND devices without ->owner
Make it work even with compilers which lack the wit to notice that
THIS_MODULE is always non-NULL. Use #ifdef MODULE instead. It's only
a temporary debugging check anyway.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-05-14 16:54:39 +01:00
David Woodhouse 151e76590f [MTD] Fix legacy character sets throughout drivers/mtd, include/linux/mtd
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-05-14 01:51:54 +01:00
David Woodhouse 552d920518 [MTD] Fix module refcounting in NAND board drivers.
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>
2006-05-14 01:20:46 +01:00
David Woodhouse e0c7d76753 [MTD NAND] Indent all of drivers/mtd/nand/*.c.
It was just too painful to deal with.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-05-13 18:07:53 +01:00
David Woodhouse 6943f8af7d [MTD NAND] Reduce paranoia level when scanning for bad blocks on virgin chips
We were scanning for 0xFF through the entire chip -- which takes a while
when it's a 512MiB device as I have on my current toy. The specs only say
we need to check certain bytes -- so do only that.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-05-13 16:14:26 +01:00
David Woodhouse 9d75414b4f [MTD NAND] Update CS553x NAND driver: Hardware ECC support, optimisations.
- Implement HW ECC support,
- Provide read_buf() and write_buf() routines using memcpy
- Use on-flash bad block table
- Fix module refcounting
- Avoid read/modify/write in hwcontrol()
- Minor cosmetic fixes

Partly based on code and ideas from Tom Sylla <tom.sylla@amd.com>

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-05-13 04:12:40 +01:00
David Woodhouse c3f8abf481 [MTD NAND] Use vmalloc for buffer when scanning for bad blocks.
These new chips have 128KiB blocks. Don't try to kmalloc that.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-05-13 04:03:42 +01:00
Egry Gábor 4992a9e888 Trivial typo fixes in Kconfig files (MTD).
Signed-off-by: Egry Gábor <gaboregry@t-online.hu>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-05-12 17:35:02 +01:00
David Woodhouse 179fdc3f8d [MTD] Basic NAND driver for AMD/NatSemi CS5535/CS5536 Geode companion chip
This lacks hardware ECC support and a few optimisations we're going to
want fairly soon, but it works well enough to mount and use JFFS2.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-05-11 22:35:28 +01:00
Lennert Buytenhek 7d532dd50d ts72xx NAND driver
The TS-72xx is a series of embedded single board computers from
Technologic Systems based on the Cirrus ep93xx (arm920t based) CPU.

The TS-7200 uses NOR flash, while all the other models in the series
(TS-7250, TS-7260) use NAND flash -- included is a driver for the NAND
flash on those boards.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-04-30 21:19:44 +01:00
Richard Purdie 6e62e8c2c7 MTD: Correct Poodle partition size
Correct the MTD NAND partition size for Poodle (Sharp Zaurus SL-5600)

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
2006-04-18 02:04:18 +01:00
Richard Purdie 8fe833c1b0 [PATCH] LED: add NAND MTD activity LED trigger
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-31 12:18:57 -08:00
Tobias Klauser 87d10f3c79 [PATCH] drivers/mtd: Use ARRAY_SIZE macro
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>
2006-03-31 12:18:48 -08:00
Adrian Bunk 54af6b4648 [PATCH] MTD_NAND_SHARPSL and MTD_NAND_NANDSIM should be tristate's
MTD_NAND=m and MTD_NAND_SHARPSL=y or MTD_NAND_NANDSIM=y are illegal
combinations that mustn't be allowed.

This patch fixes this bug by making MTD_NAND_SHARPSL and MTD_NAND_NANDSIM
tristate's.

Additionally, it fixes some whitespace damage at these options.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Acked-by: Richard Purdie <rpurdie@rpsys.net>
Acked-by: "Artem B. Bityutskiy" <dedekind@yandex.ru>
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>
2006-03-31 12:18:48 -08:00
Arjan van de Ven 858119e159 [PATCH] Unlinline a bunch of other functions
Remove the "inline" keyword from a bunch of big functions in the kernel with
the goal of shrinking it by 30kb to 40kb

Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-14 18:27:06 -08:00
Jesper Juhl 3c6bee1d40 [PATCH] turn "const static" into "static const"
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>
2006-01-10 08:01:55 -08:00
Russell King f8ce25476d [ARM] Move asm/hardware/clock.h to linux/clk.h
This is needs to be visible to other architectures using the AMBA
bus and peripherals.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-01-07 16:15:52 +00:00
Russell King a8d3584a2d [ARM] Remove clk_use()/clk_unuse()
It seems that clk_use() and clk_unuse() are additional complexity
which isn't required anymore.  Remove them from the clock framework
to avoid the additional confusion which they cause, and update all
ARM machine types except for OMAP.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-01-03 18:41:37 +00:00
Adrian Bunk 2b9175c174 [MTD] Make functions static, include header files with prototypes
This patch contains the following possible cleanups:
- every file should #include the headers containing the prototypes for
  it's global functions
- make needlessly global functions static

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-29 19:54:58 +01:00
Russell King 0c2e4b4ff3 [ARM] Drivers should not make use of architecture private __ioremap
__ioremap is an architecture private interface and must not be used
by drivers when the architecture independent interface will do just
as well.  Switch the ipaq drivers to use the correct interface.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-17 16:46:41 +00:00
Linus Torvalds 5643f000c1 Merge master.kernel.org:/home/rmk/linux-2.6-drvmodel 2005-11-11 09:24:26 -08:00
Russell King 3ae5eaec1d [DRIVER MODEL] Convert platform drivers to use struct platform_driver
This allows us to eliminate the casts in the drivers, and eventually
remove the use of the device_driver function pointer methods for
platform device drivers.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-11-09 22:32:44 +00:00
Olaf Hering 733482e445 [PATCH] changing CONFIG_LOCALVERSION rebuilds too much, for no good reason
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>
2005-11-09 07:55:57 -08:00
Linus Torvalds b3ce1debe2 Merge master.kernel.org:/pub/scm/linux/kernel/git/tglx/mtd-2.6
Some manual fixups for clashing kfree() cleanups etc.
2005-11-07 10:24:08 -08:00
Jesper Juhl fa671646f6 [PATCH] kfree cleanup: drivers/mtd
This is the drivers/mtd part of the big kfree cleanup patch.

Remove pointless checks for NULL prior to calling kfree() in drivers/mtd/.

Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Acked-by: Joern Engel <joern@wohnheim.fh-wedel.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:54:02 -08:00
Thomas Gleixner 61b03bd7c3 [MTD] NAND: Clean up trailing white spaces
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-07 15:10:37 +01:00
Thomas Gleixner 3096617434 [MTD] NAND Kconfig: Simplify dependencies
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-07 02:49:43 +01:00
Todd Poynor 868801e561 [MTD] NAND: nand_write_ecc memory and OOB corruption
Nathan Roberts noticed the nand_write_ecc index into oobbuf goes out of
bounds when crossing an erase block boundary, causing incorrect OOB data
to be written and corrupting memory.  Reset the index to zero after
re-preparing oobbuf for a new erase block.

Signed-off-by: Todd Poynor <tpoynor@mvista.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-07 02:24:31 +01:00
Vitaly Wool 49196f3332 [MTD] NAND nand_base: Fix shift for bad block check (16bit devices only)
In case of an odd offset, the result was shifted by 1 instead of 8

Signed-off-by: Vitaly Wool <vwool@ru.mvista.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-07 02:15:21 +01:00
Richard Purdie 87c146dc1a [MTD] NAND sharpsl.c: Add support for akita and borzoi models
The Sharp Zaurus akita and borzoi models are large page flash devices.
This patch adds support for them to the sharpsl MTD NAND driver but
keeps the oob layout and bad block positions compatible with the Sharp
Zaurus 2.4 kernel and ROM bootloader.

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 23:34:39 +01:00
Ben Dooks cfd320fbfc [MTD] NAND s3c2410.c: Fix timing calculation bugs
Spotted by basprog@mail.ru

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 23:15:54 +01:00
Ben Dooks d574504114 [MTD] NAND s3c2410.c: Fix missing dev parameter to dev_err
Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 23:10:43 +01:00
Ben Dooks 61a7275491 [MTD] NAND: s3c2410.c Initialize owner in device_driver struct
Added owner fields to the device_driver for tracking
ownership when built as a module

Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 23:07:28 +01:00
Ben Dooks 0255fc1b08 [MTD] NAND: s3c2410 use dev_err() to report errors instead of printk()
Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 22:37:35 +01:00
Pete Popov ef6f0d1ffc [MTD] NAND: Alchemy board driver cleanup
- 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>
2005-11-06 22:29:02 +01:00
Vitaly Wool 962034f439 [MTD] NAND: Add suspend/resume functionality
The changes introduced allow to suspend/resume NAND flash.
A new state (FL_PM_SUSPENDED) is introduced, as well as
routines for mtd->suspend and mtd->resume to put the flash in
suspended state from software pov.

Signed-off-by: Vitaly Wool <vwool@ru.mvista.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 21:43:45 +01:00
Thomas Gleixner d409466154 [MTD] NAND: Use correct mask for OOB size calculation
The bit mask used for oob size calculation was using 2 bits instead
of one. Fortunately the next bit has been 0 all the time.

Thanks to Nathan H. for pointing this out

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 20:22:32 +01:00
Linus Torvalds 4fd5f8267d Merge master.kernel.org:/home/rmk/linux-2.6-drvmodel
Manual #include fixups for clashes - there may be some unnecessary
2005-10-31 07:32:56 -08:00
Tim Schmielau 4e57b68178 [PATCH] fix missing includes
I recently picked up my older work to remove unnecessary #includes of
sched.h, starting from a patch by Dave Jones to not include sched.h
from module.h. This reduces the number of indirect includes of sched.h
by ~300. Another ~400 pointless direct includes can be removed after
this disentangling (patch to follow later).
However, quite a few indirect includes need to be fixed up for this.

In order to feed the patches through -mm with as little disturbance as
possible, I've split out the fixes I accumulated up to now (complete for
i386 and x86_64, more archs to follow later) and post them before the real
patch.  This way this large part of the patch is kept simple with only
adding #includes, and all hunks are independent of each other.  So if any
hunk rejects or gets in the way of other patches, just drop it.  My scripts
will pick it up again in the next round.

Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:32 -08:00
Russell King d052d1beff Create platform_device.h to contain all the platform device details.
Convert everyone who uses platform_bus_type to include
linux/platform_device.h.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-10-29 19:07:23 +01:00
Russell King fc611a1a50 [ARM] Don't include mach-types.h unnecessarily
It's pointless to include mach-types.h if you're not going to use
anything from it.  These references were removed as a result of:

grep -lr 'asm/mach-types\.h' . | xargs grep -L 'machine_is_\|MACH_TYPE_\|MACHINE_START\|machine_type'

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-29 11:15:51 +01:00
Richard Purdie 62052d42a5 [PATCH] MTD: Update SharpSL partition definitions
Add partition definitions for the new Sharp Zaurus models Spitz (SL-C3000),
Akita (SL-C1000) and Borzoi (SL-C3100)

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-17 11:49:58 -07:00
Ingo Molnar 8446f1d391 [PATCH] detect soft lockups
This patch adds a new kernel debug feature: CONFIG_DETECT_SOFTLOCKUP.

When enabled then per-CPU watchdog threads are started, which try to run
once per second.  If they get delayed for more than 10 seconds then a
callback from the timer interrupt detects this condition and prints out a
warning message and a stack dump (once per lockup incident).  The feature
is otherwise non-intrusive, it doesnt try to unlock the box in any way, it
only gets the debug info out, automatically, and on all CPUs affected by
the lockup.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-Off-By: Matthias Urlichs <smurf@smurf.noris.de>
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-07 16:57:17 -07:00
Thomas Gleixner 19870da7ea [MTD] NAND: Fix broken bad block scan for 16 bit devices
The previous change to read a single byte from oob breaks the
bad block scan on 16 bit devices, when the byte is on an odd
address. Read the complete oob for now.
Remove the unused arguments from check_short_pattern()
Move the wait for ready function so it is only executed when
consecutive reads happen.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-07-16 09:27:52 +02:00
Ben Dooks fb8d82a865 [MTD] NAND s3c2410: Add missing NULL pointer check
Fix OOPs if there was no platform set information passed

Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-07-06 22:26:05 +02:00
Thomas Gleixner ba9fb37ba0 [MTD] NAND: Remove unmaintained tx49xx board drivers
The drivers are unmaintained since long and reference include files
which are not available in the kernel. Original author is not longer
responsible and no new maintainer showed up within 3 month.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-07-06 11:40:12 +02:00
Thomas Gleixner 0c80336e5e [MTD] NAND: sharpsl.c set correct file permissions
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-07-06 11:28:27 +02:00
Thomas Gleixner bd7bcf52da [MTD] NAND: Add ST chip IDs.
From: Domenico DI TULLIO <domenico.di-tullio@st.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-06-29 14:36:53 +02:00
Ben Dooks a4f957f16d [MTD] NAND: s3c24xx updates
Fix error in timing generation, Tacls is only in the range 0..3

Add proper support for the s3c2440 NAND controller, which has now
been tested on several s3c2440 implementations.

Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-06-29 14:30:47 +02:00
Thomas Gleixner d7e78d4f21 [MTD] NAND: Change exports to _GPL
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-06-29 14:27:41 +02:00
Thomas Gleixner c9e0536523 [MTD] NAND: Fix broken bad block table scan
Make the bad block table search functional again

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-06-29 14:24:41 +02:00
Thomas Gleixner 0dfc62465e [MTD] NAND: Reorganize chip locking
The code was wrong in several aspects. The locking order was
inconsistent, the device aquire code did not reset a variable
after a wakeup and the wakeup handling was not working for
applications where multiple chips are sharing a single
hardware controller.
When a hardware controller is available the locking is now
reduced to the hardware controller lock and the waitqueue is
moved to the hardware controller structure in order to avoid
a wake_up_all().

The problem was pointed out by Ben Dooks, who also found the
missing variable reset as main cause for his deadlock problem.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-06-29 14:15:17 +02:00
Nicolas S. Dade f1f67a9874 [MTD] NAND: Add Hynix to manufacturer list
Signed-off-by: Nicolas S. Dade <daden@symbol.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-27 10:40:27 +02:00
Thomas Gleixner 90e260c84f [MTD] NAND: Honour autoplacement schemes supplied by the caller
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 13:20:45 +02:00
Jarkko Lavinen 0a18cde60f [MTD] NAND: Fix the broken dynamic array allocations
Reverting the change from 1.136 to 1.137 (back to static allocation of ecc
arrays) due to stack corruption and ecc errors.

Signed-off-by: Jarkko Lavinen <jarkko.lavinen@nokia.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 13:17:30 +02:00
Dan Brown abc37e6771 [MTD] DiskOnChip: Add some comments
Add helpful comment about oobfree so I can't claim two years from 
now that I don't remember what I was thinking.

Signed-off-by: Dan Brown <dan_brown@ieee.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 13:11:44 +02:00
Dan Brown 7e4a1d3e6a [MTD] DiskOnChip: Fix compile w/o CONFIG_MTD_PARTITIONS.
Signed-off-by: Dan Brown <dan_brown@ieee.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 13:11:16 +02:00
Dan Brown dff5942198 [MTD] DiskOnChip: Prevent problems with existing filesystems
Try not to break existing jffs2 installs, instead break oobfree into 
two out-of-order pieces.

Signed-off-by: Dan Brown <dan_brown@ieee.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 13:10:57 +02:00
Dan Brown 82e1d19fc3 [MTD] NAND: Fix reading of autoplaced OOB when there are multiple free sections.
Signed-off-by: Dan Brown <dan_brown@ieee.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 13:10:30 +02:00
Dan Brown e5a3e8ca94 [MTD] DiskOnChip: Fix (?) free OOB array info.
I really hope this doesn't break something.

Signed-off-by: Dan Brown <dan_brown@ieee.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 13:10:04 +02:00
Thomas Gleixner 22c60f5fb7 [MTD] NAND: Move the NULL check into the calling function
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 13:09:10 +02:00
Dan Brown bb75ba4c44 [MTD] NAND: Fix missing NULL pointer check
Version 1.137 broke nand_read_ecc clients who pass NULL oobsel.  Fixed.

Signed-off-by: Dan Brown <dan_brown@ieee.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 13:08:47 +02:00
Thomas Gleixner 998cf6403c [MTD] NAND: Fix oob available calculation
Use oobfree to calculate the number of oob bytes available for fs usage

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 13:07:14 +02:00
Dan Brown 1a78ff6b41 [MTD] DiskOnChip: Scan the entire device for Media Headers.
Add a new module param, show_firmware_partition.

Signed-off-by: Dan Brown <dan_brown@ieee.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 13:04:36 +02:00
Artem B. Bityuckiy 15fc108606 [MTD] NAND: Use arrays of needed size instead of constant-sized.
Signed-off-by: Artem B. Bityuckiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 13:04:06 +02:00
Artem B. Bityuckiy 515022870f [MTD] NAND nandsim: Use NAND_SKIP_BBT option
Use the new NAND_SKIP_BBT option instead of defining a fake scan_bbt
handler.

Signed-off-by: Artem B. Bityuckiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 12:59:33 +02:00
Ben Dooks 3e4ef3bb77 [MTD] NAND s3c2410: Simplify command handling
Updated with tglx's suggestion to simply the command invocation by
simply changing the address of the IO write area

Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 12:55:50 +02:00
Ben Dooks 3b946e3f3d [MTD] NAND: Fixed unused loop variable
Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 12:51:48 +02:00
Thomas Gleixner 20a6c21190 [MTD] NAND: Use cond_resched instead of msleep
Replace msleep by cond_resched. On machines with HZ=100 (e.g. ARM)
msleep slows down the operation by factor 10

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 12:47:55 +02:00
Thomas Gleixner 3b88775c75 [MTD] NAND: Check command timeout
Check timeout while we wait for the command to finish. No worry about a
false result. This prevents deadlocking when detecting an unknown number
of chips and is useful for removable media too.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 12:42:49 +02:00
Thomas Gleixner dfd6129440 [MTD] DiskOnChip: Wait for the command to finish.
Do not use the ready function here, as it might hang for ever. 
The result will show, whether the chip is there or not

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 12:42:18 +02:00
Ben Dooks fdf2fd5274 [MTD] Sparse fixes
Fix sparse errors due to lack of address-space markers
Updated header comments
Small re-format of initialiser

Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 12:41:32 +02:00
Artem B. Bityuckiy 171650af9c [MTD] NAND: Fix bad block table scan for small page devices
Scan 1st and 2nd pages of SP devices for BB marker by default.
Fix more then one page scanning in create_bbt.c.

Signed-off-by: Artem B. Bityuckiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 12:38:33 +02:00
Kyungmin Park 0ea4a7558f [MTD] NAND: Early Manufacturer ID lookup
Move manufacturer ID search to display correct ID in case of buswidth
mismatch.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 12:36:30 +02:00
Artem B. Bityuckiy eeada24da8 [MTD] NAND: Read only OOB bytes during bad block scan
When scanning NAND for bad blocks, don't read the whole page, read
only needed OOB bytes instead. Also check the return code of the
nand_read_raw() function. Correctly free the this->bbt array in
case of failure. Tested with Large page NAND.

Fix debugging message.

Signed-off-by: Artem B. Bityuckiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 12:32:18 +02:00
Artem B. Bityuckiy 41ce921440 [MTD] NAND: Allow operation without bad block table
Small bugfix. Sometimes it may be handy not to have bbt.
So, this->bbt might be NULL.

Signed-off-by: Artem B. Bityuckiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 12:31:01 +02:00
Thomas Gleixner 0040bf382c [MTD] NAND: Skip bad block table scan on request
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 12:30:07 +02:00
Thomas Gleixner f29a4b86f5 [MTD] DiskOnChip: big endian fix for NFTL devices
Make NFTL devices work on big endian machines.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 12:18:59 +02:00
Thomas Gleixner 39605398cd [MTD] DiskOnChip code cleanup
Remove commented ugliness

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 12:17:42 +02:00
Thomas Gleixner 651078ba3a [MTD] DiskOnChip use CONFIG_ options instead of random symbols
Using the CONFIG_ options from KConfig seems to work better :8

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 12:17:03 +02:00
David A. Marlin ed3786a599 [MTD] rtc_from4 error status check, disable virtual erase blocks
Added routine to perform extra error status checks on erase and write
failures to determine if errors are correctable.
Added option to prevent JFFS2 from using virtual erase blocks.
Performed minor cleanup on whitespace and comments.

Signed-off-by: David A. Marlin <dmarlin@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 12:10:36 +02:00
David A. Marlin 068e3c0a00 [MTD] NAND Add optional ECC status check callback
Add optional hardware specific callback routine to perform extra error
status checks on erase and write failures for devices with hardware ECC.

Signed-off-by: David A. Marlin <dmarlin@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 12:08:59 +02:00
David A. Marlin a4ab4c5d32 [MTD] NAND use symbols instead of literals
Replace some literals with defined symbols.

Signed-off-by: David A. Marlin <dmarlin@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 11:32:36 +02:00
Richard Purdie 7ba48c4583 [MTD] NAND SharpSL fix default partition size
Correct Poodle default partition size

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 11:31:47 +02:00
Thomas Gleixner 15266bb74d [MTD] NAND replace yield
Replace yield by msleep. M.Wilcox stared at it and frowned

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 11:29:39 +02:00
David A. Marlin 97f1a087dc [MTD] Renesas AG-AND device recovery
Add routine to perform device recovery (deplete) procedure.
Clean up some compiler warnings.

Signed-off-by: David A. Marlin <dmarlin@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 11:27:56 +02:00
David A. Marlin 30f464b74b [MTD] NAND workaround for AG-AND disturb issue. AG-AND recovery
Added workaround for Renesas AG-AND chips "disturb" issue 
for Bad Block Table. 
Added support for the device recovery command sequence 
for Renesas AG-AND chips.

Signed-off-by: David A. Marlin <dmarlin@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 11:26:45 +02:00
David A. Marlin 28a48de72b [MTD] NAND extended commands, badb block table autorefresh
Added extended commands for AG-AND device and added 
option for BBT_AUTO_REFRESH.

Signed-off-by: David A. Marlin <dmarlin@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 11:22:05 +02:00
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2
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!
2005-04-16 15:20:36 -07:00