mtd: nand-mxs: Return bitflips ...

The read_page hook shall return the number of bitflips. Implement
that.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: nand-bb: use list_for_each_entry_safe ...

We need list_for_each_entry_safe in dev_remove_bb_dev since the
list entries are removed during iteration over the list.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Reported-by: Alexander Aring <alex.aring@gmail.com>

Merge branch 'for-next/mtd'

Merge branch 'for-next/misc'

mtd: omap gpmc: Turn debug message into dev_dbg ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: ubi: avoid NULL pointer dereference in ubi_get_device ...

If the ubidetach command is given a number that passes the range check
in ubi_detach_mtd_dev, but at which index the ubi_devices array contains
a NULL pointer, ubi_get_device tries to dereference this NULL pointer
to increment the ubi device reference count.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

nand: mxs: Fix for calculating ecc strength on some types of NAND flash ...

Was tested on NAND with {writesize=4096, oobsize=224} and
{writesize=2048, oobsize=64}.

This patch will not break any NAND that was working
before. Implemented calculation way may be used for other NAND chips
with writesize == 2048 but oobsize != 64.

Signed-off-by: Dmitry Lavnikevich <d.lavnikevich@sam-solutions.com>
Signed-off-by: Grigory Milev <g.milev@sam-solutions.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

nand: mxs: Check for up to 4 NAND chips ...

Since i.MX6 has only one R/B actual pin, if there are several R/B
signals (from different NAND chips) they must be connected to this
pin.

Signed-off-by: Dmitry Lavnikevich <d.lavnikevich@sam-solutions.com>
Signed-off-by: Grigory Milev <g.milev@sam-solutions.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ubi: Fix for creating ubi volumes with 64bit size ...

Since MTD is already supports >= 4GB device sizes it is better to
allow ubi valumes also be created of larger sizes.

Signed-off-by: Dmitry Lavnikevich <d.lavnikevich@sam-solutions.com>
Signed-off-by: Grigory Milev <g.milev@sam-solutions.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: Support for 4GB partitions ...

This patch implements correct way of creating partitions on mtd
devices with size >= 4GB.

Signed-off-by: Dmitry Lavnikevich <d.lavnikevich@sam-solutions.com>
Signed-off-by: Grigory Milev <g.milev@sam-solutions.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: Update internal API to support 64-bit device size ...

MTD internal API presently uses 32-bit values to represent device
size. This patch updates them to 64-bits but leaves the external API
unchanged.

In general, changing from 32-bit to 64-bit values cause little
or no changes to the majority of the code with the following
exceptions:
  - printk message formats;
  - division and modulus of 64-bit values (mtd_div_by_wb,
    mtd_div_by_eb may be used in some of such cases).

Was tested on phyFLEX i.MX6.

Signed-off-by: Dmitry Lavnikevich <d.lavnikevich@sam-solutions.com>
Signed-off-by: Grigory Milev <g.milev@sam-solutions.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/ubi' ...

Conflicts:
	drivers/mtd/ubi/cdev.c

Merge branch 'for-next/partitionhelper' ...

Conflicts:
	fs/devfs-core.c

Merge branch 'for-next/mtd' ...

Conflicts:
	drivers/mtd/core.c
	net/eth.c

Merge branch 'for-next/modalias'

Merge branch 'for-next/misc' ...

Conflicts:
	common/environment.c

mtd: nand: atmel pmecc: disable subpage writes ...

I am using an sam5d35 and its pmecc nand ecc controller.

In barebox, using similar atmel_nand.c the system crashes.

The problem was a call to chip->ecc.hwctl from nand_write_subpage_hwecc
(nand_base.c) when we write a sub page.

chip->ecc.hwctl function is not set when we are using PMECC controller.

As a workaround, i set NAND_NO_SUBPAGE_WRITE for PMECC controller in
order to disable sub page access in nand_write_page.

I think we can have the same problem in Linux. I do not performed
subpage nand writes from Linux but i made the following patch according
to my Barebox defect.

Signed-off-by: Herve Codina <Herve.CODINA@celad.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: ubi: rework logging ...

By default UBI is very verbose. Decrease the verbosity, turn
printf messages into ubi_ messages and add device parameters
for the values which are not printed anymore.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

cfi_flash: fix NULL pointer dereference ...

We need to setup the info->dev pointer before flash_get_size() since it
might use it for dev_dbg().
This fix a crash on boot when debug output is enabled.

Signed-off-by: Philippe Rétornaz <philippe.retornaz@epfl.ch>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd/nand: constify filename parameter ...

The string pointed to isn't modified, so declare it as const.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: mtdoob: Do not create for partitions ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: mtdraw: Do not create for partitions and devices without oob ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ubi: register ubi devices and volumes as devices ...

struct ubi_device and struct ubi_volume have devices attached
to them. Register them to make them part of the barebox device
hierarchy.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: register mtd partitions as real mtd devices ...

So far mtd partitions were mtd devices, but these were not registered.
This patch changes this. mtd partitions are now registered like real
mtd devices. This makes them part of the device hierarchy.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: partition: make the mtd device the parent of the partition ...

Parent of a partition should be the parent mtd device, not its
parent.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: partition: only copy selected fields to partition ...

struct mtd_info contains members which should not be copied
to the new partition, like for example the class_dev, so
only copy selected members of struct mtd_info to the partition.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: Only call of_parse_partitions when the mtd has a parent ...

mtd->parent is optional so we can't derefence mtd->parent->device_node
without checking mtd->parent.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: erase_info may be modified in mtd_erase ...

erase_info may be modified by the mtd partition code, so
set the address each time we call mtd_erase.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: nand_imx: Remove redundant assignment ...

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: Simplify partitions ...

Embed the partition information in struct mtd_info. This makes the
mtd partition code simpler.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>