S5PC210 has the same OneNAND controller as S5PC110
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

Implement DMA interrupt method. previous time it polls the DMA status.
It can reduce the CPU power but decrease the performance a little.
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

When use HIGHMEM, dma_map_single doesn't get the proper DMA address.
So use the dma_map_page in this case.
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

After S5PC110 use the generic method for OneNAND.
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

The MLC NAND Flash differs from the SLC NAND flash in functioning
and the cell structure. Therefore we are considering it as a
different Flash type.
Signed-off-by: NRohit H.S <rohit.hs@samsung.com>
Signed-off-by: NRaghav Gupta <gupta.raghav@samsung.com>
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

MLC NAND Flash has a different cell structure and differs in
functioning than the SLC NAND Flash. Hence we are considering it as
a different Flash type.
Signed-off-by: NRohit H.S <rohit.hs@samsung.com>
Signed-off-by: NRaghav Gupta <gupta.raghav@samsung.com>
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

There's no case timeout but add it for some H/W problem or
wrong codes implementation
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

Not all the NAND devices have all the information in additional
id bytes.

So add a hook in the nand_chip{} is a good method to calculate the
right value of oobsize, erasesize and so on.

Without the hook,you will get the wrong value, and you have to hack
in the ->scan_bbt() to change the wrong value which make the code
mess.
Signed-off-by: NHuang Shijie <shijie8@gmail.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

The jffs2 compression framework provides a "model" argument when
compressing and decompressing, but the caller always passes in NULL
and the callees never use it.  So punt this useless overhead.
Signed-off-by: NMike Frysinger <vapier@gentoo.org>
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

Add support for mtd repartition based on the block
device BLKPG interface:
BLKPG_ADD_PARTITION - for partition creation;
BLKPG_DEL_PARTITION - for partition delete

The usage is based on BLKPG ioctl called with
struct blkpg_ioctl_arg argument which includes the
reference to struct blkpg_partition discribing the
partition offset and length.

Disadvantage: there is no implementation for mtd
flags control. The flags are always borrowed from
the master device.
Signed-off-by: NRoman Tereshonkov <roman.tereshonkov@nokia.com>
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

mtd_is_master, mtd_add_partition and mtd_del_partition functions
are added to give the possibility of partition manipulation
by ioctl request.

The old partition add function is modified to fit the dynamic
allocation.
Signed-off-by: NRoman Tereshonkov <roman.tereshonkov@nokia.com>
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

Just as it says, if this is merged along with the other patch, the
driver supports the U300 NAND flash interface.
Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

This is the same driver submitted by ST Micros SPEAr team but
generalized and tested on the ST-Ericsson U300. It probably
easily works on the NHK8815 too.
Signed-off-by: NVipin Kumar <vipin.kumar@st.com>
Signed-off-by: NRajeev Kumar <rajeev-dlh.kumar@st.com>
Signed-off-by: NShiraz Hashim <shiraz.hashim@st.com>
Signed-off-by: NViresh Kumar <viresh.kumar@st.com>
Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

yield() has different semantics meanwhile and even causes RT-kernels to
BUG. Replace the only appearance left in jffs2.
Signed-off-by: NWolfram Sang <w.sang@pengutronix.de>
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

This patch adds support for the Winbond W25Q64 serial flash.
Signed-off-by: NThierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

Currently MTD caches the last read NAND page, even if there was an uncorrectable ECC
error. This patch prevents caching in case of uncorrectable ECC errors. The reason
is that we want to allow the user to re-read the NAND page several times. In case of
unstable bits re-trying may help.

Moreover, current behavior is wrong because the first read returns -EBADMSG (correctly)
but the second read succeeds and incorrectly returns 0 (because we read from the cache).
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

This patch adds support for parsing Broadcom BCM63xx image tag format and
creating MTD partitions accordingly. This driver is a platform_device which
can be instantiated accordingly by bcm63xx board support code.
Signed-off-by: NDaniel Dickinson <cshore@csolve.net>
Signed-off-by: NMike Albon <malbon@openwrt.org>
Signed-off-by: NFlorian Fainelli <florian@openwrt.org>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

If "ur_idx" is wrong we could go past the end of the array.  The
"ur_idx" comes from root so it's not a huge deal, but adding a sanity
check makes the code more robust.
Signed-off-by: NDan Carpenter <error27@gmail.com>
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

Fix the build warning:

drivers/mtd/nand/fsl_upm.c: In function 'fun_chip_init':
drivers/mtd/nand/fsl_upm.c:190: warning: format '%x' expects type 'unsigned int', but argument 3 has type 'resource_size_t'
Signed-off-by: NRoy Zang <tie-fei.zang@freescale.com>
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

Only 3 warnings are left, one is off by one character, but splitting the line
would reduce the readability. One is for a for loop statement, which would also
not improve readability. The last one is a false positive on a test.

Artem: it is much easier to verify patches against nand_base.c with
       checkpatch.pl when nand_base.c itself does not have so many
       checkpatch.pl warnings.
Signed-off-by: NFlorian Fainelli <ffainelli@freebox.fr>
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

Artem: it is much easier to verify patches against nand_base.c with
       checkpatch.pl when nand_base.c itself does not have so many
       checkpatch.pl warnings.
Signed-off-by: NFlorian Fainelli <ffainelli@freebox.fr>
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

Sudhakar found out that 100µs are enough. Sadly, his updated patch was
overlooked and an older version still using 100ms was merged. Fix this.

Reference: http://patchwork.ozlabs.org/patch/59180/Signed-off-by: NWolfram Sang <w.sang@pengutronix.de>
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

This patch adds support for Spansion S25FL016K and S25FL064K SPI flash.
It has been tested with physical devices. Note that both parts exhibit
a Winbond manufacturer ID so they might also be added to that section.
Signed-off-by: NGernot Hoyler <Gernot.Hoyler@spansion.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

In order to reduce the indentation and improve the readability of nand_get_
flash_type, split the ONFI detection logic to its own function. The detection
logic inside nand_flash_detect_onfi is also rewritten to allow for less
indentation.
Signed-off-by: NFlorian Fainelli <ffainelli@freebox.fr>
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

This patch adds support for reading NAND device ONFI parameters and use
the ONFI informations to define its geometry. In case the device supports
ONFI, the onfi_version field in struct nand_chip contains the version (BCD)
and the onfi_params structure can be used by drivers to set up timings and
such. We currently only support ONFI 1.0 parameters.
Signed-off-by: NBrian Norris <norris@broadcom.com>
Signed-off-by: NMatthieu Castet <matthieu.castet@parrot.com>
Signed-off-by: NMaxime Bizon <mbizon@freebox.fr>
Signed-off-by: NFlorian Fainelli <ffainelli@freebox.fr>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

Signed-off-by: NFlorian Fainelli <ffainelli@freebox.fr>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

This command is used to read the device ONFI parameters page.
Signed-off-by: NFlorian Fainelli <ffainelli@freebox.fr>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

S5PC110 OneNAND controller use the generic functions provided from onenand_base.
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

There are some additions to the detection scheme used by Samsung
MLC NAND. These simple changes to support the 400- and 436-byte OOB
are found in the following data sheet:

Samsung K9GBG08U0M (p.40)
Signed-off-by: NBrian Norris <norris@broadcom.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

Signed-off-by: NWolfram Sang <w.sang@pengutronix.de>
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

This code isn't reachable.  I looked through the git history and it
hasn't been reachable for years.  Someone removed the label to silence
gcc's unused label warning but these few lines accidentally got left
behind.
Signed-off-by: NDan Carpenter <error27@gmail.com>
Acked-by: NDominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

Add a call to of_node_put in the error handling code following a call to
of_find_compatible_node.
Signed-off-by: NJulia Lawall <julia@diku.dk>
Acked-by: NWolfram Sang <w.sang@pengutronix.de>
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

For different command need different oob requirement, set the proper
oob length by different cmd.
Signed-off-by: NLei Wen <leiwen@marvell.com>
Acked-by: NEric Miao <eric.y.miao@gmail.com>
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

After probe, all info already transfer to driver structure.
There is no need to keep the original flash info.
So that we could safely free the flash info in memory, which may grows
larger when more flash is suported.
Signed-off-by: NLei Wen <leiwen@marvell.com>
Signed-off-by: NHaojian Zhuang <haojian.zhuang@marvell.com>
Acked-by: NEric Miao <eric.y.miao@gmail.com>
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

We certainly don't need to send read id command times by times, since
we already know what the id is after the first read id...

So create a default timing which could ensure it would successfully read
id out all supported chip. Then follow the build-in table to reconfigure
the timing.
Signed-off-by: NLei Wen <leiwen@marvell.com>
Signed-off-by: NHaojian Zhuang <haojian.zhuang@marvell.com>
Acked-by: NEric Miao <eric.y.miao@gmail.com>
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

Adding a new flash definition would need less code.
Keep the platform passing flash definition method.
If one flash is both defined in platform data and builtin table,
driver would select the one from platform data first.

By this way, platform could select the timing most suit for itself,
not need to follow the common settings.
Signed-off-by: NLei Wen <leiwen@marvell.com>
Signed-off-by: NHaojian Zhuang <haojian.zhuang@marvell.com>
Acked-by: NEric Miao <eric.y.miao@gmail.com>
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

Toshiba does not use ONFI for their NAND flash. So we have to continue
to add new IDs used by Toshiba devices as well as heuristic detection
for scanning the 2nd page for a BBM. This is a relatively harmless
start at supporting many of them.

These chips mostly follow the same ID fields of previous generations,
but there is a need for a tweak.

These chips introduce a strange 576 byte OOB (that's 36 bytes per
512 bytes of page). In the preliminary data, Toshiba has not
defined exactly how their ID strings should decode. In the future,
a new tweak must be added.

Data is taken from, among others, Toshiba TC58TxG4S2FBAxx
Signed-off-by: NBrian Norris <norris@broadcom.com>
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

An increase in NAND_MAX_OOBSIZE and NAND_MAX_PAGESIZE is necessary
in order to support many new chips. Among those:

Toshiba TC58TxG4S2FBAxx  8KB page, 576B OOB
Micron MT29F64G08CBAAA   8KB page, 448B OOB
Signed-off-by: NBrian Norris <norris@broadcom.com>
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

Remove the MTD!=n dependency since that is handled by drivers/mtd/Kconfig.
Simplify the dependency checks for mtd/chips by using if/endif blocks. Remove
all default n since that is the Kconfig default.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

There were some improvements and additions necessary in the
comments explaining of the expansion of nand_ecclayout, the
introduction of nand_ecclayout_user, and the deprecation of the
ioctl ECCGETLAYOUT.

Also, I found a better placement for the macro MTD_MAX_ECCPOS_ENTRIES;
next to the definition of MTD_MAX_OOBFREE_ENTRIES in mtd-abi.h. The macro
is really only important for the ioctl code (found in drivers/mtd/mtdchar.c)
but since there are small edits being made to the user-space header, I
figured this is a better location.
Signed-off-by: NBrian Norris <computersforpeace@gmail.com>
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>