Commit Graph

29 Commits

Author SHA1 Message Date
Kukjin Kim e393bc0900 mtd: onenand: remove s5pc100 related onenand codes
This patch removes s5pc100 related onenand codes because of no more
support for S5PC100 SoC in mainline.

Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-07-13 07:35:14 +09:00
Artem Bityutskiy 75d0c37419 mtd: onenand: remove OneNAND simulator
This commit remove OneNAND simulator on the basis that it is useless.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 13:19:26 +01:00
Artem Bityutskiy 660685d9d1 mtd: merge mtdchar module with mtdcore
The MTD subsystem has historically tried to be as configurable as possible. The
side-effect of this is that its configuration menu is rather large, and we are
gradually shrinking it. For example, we recently merged partitions support with
the mtdcore.

This patch does the next step - it merges the mtdchar module to mtdcore. And in
this case this is not only about eliminating too fine-grained separation and
simplifying the configuration menu. This is also about eliminating seemingly
useless kernel module.

Indeed, mtdchar is a module that allows user-space making use of MTD devices
via /dev/mtd* character devices. If users do not enable it, they simply cannot
use MTD devices at all. They cannot read or write the flash contents. Is it a
sane and useful setup? I believe not. And everyone just enables mtdchar.

Having mtdchar separate is also a little bit harmful. People sometimes miss the
fact that they need to enable an additional configuration option to have
user-space MTD interfaces, and then they wonder why on earth the kernel does
not allow using the flash? They spend time asking around.

Thus, let's just get rid of this module and make it part of mtd core.

Note, mtdchar had additional configuration option to enable OTP interfaces,
which are present on some flashes. I removed that option as well - it saves a
really tiny amount space.

[dwmw2: Strictly speaking, you can mount file systems on MTD devices just
        fine without the mtdchar (or mtdblock) devices; you just can't do
        other manipulations directly on the underlying device. But still I
        agree that it makes sense to make this unconditional. And Yay! we
        get to kill off an instance of checking CONFIG_foo_MODULE, which is
        an abomination that should never happen.]

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 13:16:54 +01:00
Richard Weinberger 9310da0bbb MTD: Relax dependencies
CONFIG_GENERIC_IO is just enough for the basic MTD stuff.

Signed-off-by: Richard Weinberger <richard@nod.at>
Acked-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-03-25 00:29:56 +01:00
Jamie Iles 711a632d1f mtd: onenand: convert to mtd_device_register()
Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS
preprocessor conditionals as partitioning is always available.

Cc: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-05-25 02:21:19 +01:00
Kukjin Kim fc406cd84b mtd: OneNAND: Change dependency of ARCH_EXYNOS4
This patch updates EXYNOS4 OneNAND support according to the change of
ARCH name, EXYNOS4.

Cc: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-02-22 13:51:15 +09:00
Kyungmin Park 861fae1818 mtd: OneNAND: S5PC210 OneNAND support
S5PC210 has the same OneNAND controller as S5PC110

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-25 00:52:43 +01:00
Kyle Spaans 8c1a1158c9 mtd: remove redundant dependency checks in Kconfig files
Look for dependency checks for "FOO" when inside of an "if FOO" block and remove them.

Signed-off-by: Kyle Spaans <kspaans@uwaterloo.ca>
Reviewed-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-08-02 09:01:42 +01:00
Kyungmin Park 46f3e88bd9 mtd: add Samsung SoC OneNAND driver
This patch adds a driver for OneNAND controller on Samsung SoCs.
Following SoCs are supported: S3C6400, S3C6410, S5PC100 and S5PC110.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-05-14 01:51:20 +01:00
Michael Roth fa3012318b Kconfig: Remove useless and sometimes wrong comments
Additionally, some excessive newlines removed.

Signed-off-by: Michael Roth <mroth@nessie.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-11-09 09:40:56 +01:00
Magnus Damm 778dbcc1eb mtd: onenand: make onenand/generic.c more generic
Remove the ARM dependency from the generic "onenand" platform device
driver.  This change makes the driver useful for other architectures as
well.  Needed for the SuperH kfr2r09 board.

Apart from the obvious Kconfig bits, the most important change is the move
away from ARM specific includes and platform data.  Together with this
change the only in-tree board code gets an update, and the driver name is
also changed gracefully break potential out of tree drivers.

The driver is also updated to allow NULL as platform data together with a
few changes to make use of resource_size() and dev_name().

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Kyungmin Park <kmpark@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-19 11:07:50 -07:00
Paul Mundt 0acfe530a2 mtd: onenand: select MTD_PARTITIONS
All of the onenand drivers depend on mtd partition support being compiled
in, so just select it. Fixes up build breakage:

drivers/built-in.o: In function `generic_onenand_remove':
generic.c:(.devexit.text+0x80): undefined reference to `del_mtd_partitions'

Reported-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-04 09:40:37 +01:00
Adrian Hunter 36cd4fb5d2 [MTD] [OneNAND] Add OMAP2 / OMAP3 OneNAND driver
This driver had resided in the OMAP tree but is now to be in MTD.

Original authors were:
	Jarkko Lavinen <jarkko.lavinen@nokia.com> and Juha Yrjölä
	IRQ and DMA support written by Timo Teras

Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-08-12 11:07:37 +01:00
David Brownell 34a82443b7 [MTD] dataflash OTP support
Now that we can tell when we have one of the newer DataFlash chips,
optionally expose the 128 bytes of OTP memory they provide.  Tested
on at45db642 revision B and D chips.

Switch mtdchar over to a generic HAVE_MTD_OTP flag instead of adding
another #ifdef for each type of chip whose driver has OTP support.

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>
2008-08-01 21:47:47 +01:00
Kyungmin Park 8dab169b8b [MTD] OneNAND Simulator support
This simulate various OneNAND flash chips for the MTD onenand layer.
It's simple implementation, only basic operations.
It don't support the recent changes in NANDSIM such as lazy block allocation,
bitflip, and so on.

Note: This passed nand-tests.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-06-30 08:25:45 +01:00
Kyungmin Park ee9745fcf2 [MTD] [OneNAND] 2X program support
The 2X Program is an extension of Program Operation.

Since the device is equipped with two DataRAMs, and two-plane NAND Flash 
memory array, these two component enables simultaneous program of 4KiB.
Plane1 has only even blocks such as block0, block2, block4 while Plane2 
has only odd blocks such as block1, block3, block5.
So MTD regards it as 4KiB page size and 256KiB block size

Now the following chips support it. (KFXXX16Q2M)
Demux: KFG2G16Q2M, KFH4G16Q2M, KFW8G16Q2M,
Mux:   KFM2G16Q2M, KFN4G16Q2M,

And more recent chips

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-06-30 08:24:57 +01:00
Kyungmin Park c19df27ec7 [MTD] [OneNAND] Update Samsung OneNAND official URL
Update Samsung OneNAND official URL.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-04-25 11:09:06 +01:00
Jan Engelhardt ec98c681a5 Use menuconfig objects: MTD
Use menuconfigs instead of menus, so the whole menu can be disabled at once
instead of going through all options.

Signed-off-by: Jan Engelhardt <jengelh@gmx.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-04-19 16:21:41 -05:00
Matt LaPlante 095096038d Fix several typos in drivers/
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-10-03 22:31:37 +02:00
Kyungmin Park 98638ee2ed [MTD ONENAND] Remove unused MTD_ONENAND_SYNC_READ configuration
Now the bootloader configures the OneNAND sync. burst mode.
So we don't access Sync. burst mode related registers in kernel.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-09-26 10:02:37 +01:00
Kyungmin Park 493c646077 OneNAND: One-Time Programmable (OTP) support
One Block of the NAND Flash Array memory is reserved as
a One-Time Programmable Block memory area.
Also, 1st Block of NAND Flash Array can be used as OTP.

The OTP block can be read, programmed and locked using the same
operations as any other NAND Flash Array memory block.
OTP block cannot be erased.

OTP block is fully-guaranteed to be a valid block.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2006-05-12 15:35:50 +01:00
Thomas Gleixner 46d0d0fb61 [MTD] OneNAND/Kconfig: Fix dependencies
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-07 01:14:05 +01:00
Thomas Gleixner f0250fd7c3 Revert "[PATCH] OneNAND: Add simulator"
This reverts 405c829f98 commit.
2005-11-07 01:11:04 +01:00
Kyungmin Park 1b01d9798d OneNAND: Remove OMAP platform driver
Now we can use the generic platform driver

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 21:35:12 +01:00
Kyungmin Park 68ee4b1c50 [MTD] OneNAND: Add generic platform driver
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 21:33:11 +01:00
Kyungmin Park 1501787675 [MTD] OneNAND: Remove experimental Kconfig dependency
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 21:25:42 +01:00
Kyungmin Park 405c829f98 [PATCH] OneNAND: Add simulator
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 21:23:10 +01:00
Kyungmin Park 52b0eea73d [PATCH] OneNAND: Sync. Burst Read support
Add OneNAND Sync. Burst Read support
Tested with OMAP platform

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 21:19:37 +01:00
Kyungmin Park cd5f6346bc [MTD] Add initial support for OneNAND flash chips
OneNAND is a new flash technology from Samsung with integrated SRAM
buffers and logic interface.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 21:17:24 +01:00