Previously, when probing a CFI chip which was write-protected at the
hardware level, the probe would fail due to the fact it could not put
the chip into QUERY mode. This would result in no MTD devices being
created.
Add a fallback to probe using the map_rom driver if the user-selected
probe fails.
Signed-off-by: Joe Schultz <jschultz@xes-inc.com>
Signed-off-by: Aaron Sierra <asierra@xes-inc.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
* Add device tree support for DoC3
* SPI NOR:
Refactoring, for better layering between spi-nor.c and its driver users
(e.g., m25p80.c)
New flash device support
Support 6-byte ID strings
* NAND
New NAND driver for Allwinner SoC's (sunxi)
GPMI NAND: add support for raw (no ECC) access, for testing purposes
Add ATO manufacturer ID
A few odd driver fixes
* MTD tests:
Allow testers to compensate for OOB bitflips in oobtest
Fix a torturetest regression
* nandsim: Support longer ID byte strings
And more.
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Merge tag 'for-linus-20141215' of git://git.infradead.org/linux-mtd
Pull MTD updates from Brian Norris:
"Summary:
- Add device tree support for DoC3
- SPI NOR:
Refactoring, for better layering between spi-nor.c and its
driver users (e.g., m25p80.c)
New flash device support
Support 6-byte ID strings
- NAND:
New NAND driver for Allwinner SoC's (sunxi)
GPMI NAND: add support for raw (no ECC) access, for testing
purposes
Add ATO manufacturer ID
A few odd driver fixes
- MTD tests:
Allow testers to compensate for OOB bitflips in oobtest
Fix a torturetest regression
- nandsim: Support longer ID byte strings
And more"
* tag 'for-linus-20141215' of git://git.infradead.org/linux-mtd: (63 commits)
mtd: tests: abort torturetest on erase errors
mtd: physmap_of: fix potential NULL dereference
mtd: spi-nor: allow NULL as chip name and try to auto detect it
mtd: nand: gpmi: add raw oob access functions
mtd: nand: gpmi: add proper raw access support
mtd: nand: gpmi: add gpmi_copy_bits function
mtd: spi-nor: factor out write_enable() for erase commands
mtd: spi-nor: add support for s25fl128s
mtd: spi-nor: remove the jedec_id/ext_id
mtd: spi-nor: add id/id_len for flash_info{}
mtd: nand: correct the comment of function nand_block_isreserved()
jffs2: Drop bogus if in comment
mtd: atmel_nand: replace memcpy32_toio/memcpy32_fromio with memcpy
mtd: cafe_nand: drop duplicate .write_page implementation
mtd: m25p80: Add support for serial flash Spansion S25FL132K
MTD: m25p80: fix inconsistency in m25p_ids compared to spi_nor_ids
mtd: spi-nor: improve wait-till-ready timeout loop
mtd: delete unnecessary checks before two function calls
mtd: nand: omap: Fix NAND enumeration on 3430 LDP
mtd: nand: add ATO manufacturer info
...
On device remove, when testing the cmtd field of an of_flash
struct to decide whether it is a concatenated device or not,
we get a false positive on cmtd == NULL, and dereference it
subsequently. This may occur if of_flash_remove() is called
from the cleanup path of of_flash_probe().
Instead, test for NULL first, and only then perform the test
for a concatenated device.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Avoid the following compile warning:
drivers/mtd/maps/bfin-async-flash.c: In function 'bfin_flash_probe':
drivers/mtd/maps/bfin-async-flash.c:129: warning: unused variable 'ret'
Signed-off-by: Aaron Sierra <asierra@xes-inc.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Previously, the only way to map a NOR device as a simple ROM was to
use the obsolete "direct-mapped" compatible binding (which further
requires device_type = "nor" and probe-type = "NOR" properties).
This patch adds an "mtd-rom" compatible binding to the "map_rom"
probe type.
Signed-off-by: Aaron Sierra <asierra@xes-inc.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
The "ROM" and unknown probe types within the obsolete "direct-mapped"
probe function used the nonexistent "mtd_rom" probe instead of the
intended "map_rom".
Signed-off-by: Aaron Sierra <asierra@xes-inc.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Fix the bug in handling gpio flash read/write when offset + len
from MTD exceeds the window size
Signed-off-by: Aaron Wu <Aaron.wu@analog.com>
[Brian: made some commentary edits. Also note that the BUG_ON() was
provably false for all non-negative inputs (since x % y <= x), so we
dropped it.]
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Use NULL instead of 0 when returning an address. This fixes a
sparse warning.
Signed-off-by: Martin Kepplinger <martink@posteo.de>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Since (a few releases before) v2.6.0 there have been checks for
CONFIG_MTD_SUPERH_RESERVE. One check is still present. But a Kconfig
symbol MTD_SUPERH_RESERVE has never been added. So a few lines of dead
code can be removed.
Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
On m86k, and maybe a few other architectures, we get this kind of
warning, due to misuse of volatile:
drivers/mtd/maps/sc520cdp.c: In function 'sc520cdp_setup_par':
>> drivers/mtd/maps/sc520cdp.c:223:2: warning: passing argument 1 of 'iounmap' discards 'volatile' qualifier from pointer target type [enabled by default]
arch/m68k/include/asm/raw_io.h:22:13: note: expected 'void *' but argument is of type 'volatile long unsigned int *'
Rather than annotating the variable declaration, let's just use the
proper accessors, which add the 'volatile' qualifier to the operation.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Anyone working with an AMD Elan SC520 development or evaluation board
would be building a dedicated kernel for it, so we can make the
sc520cdp and netsc520 maps depend on MELAN. SC520_CPUFREQ already
depends on MELAN so it makes things more consistent. It also makes
kernel configuration for every other x86 user easier.
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Cc: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Up to now mtd-ram devices described in device trees were only accessible
if mtd-flash or mtd-rom were also configured at linux configuration
time, because MTD_PHYSMAP_OF was only available if (MTD_CFI ||
MTD_JEDECPROBE || MTD_ROM). Allow MTD_PHYSMAP_OF selection also
when only MTD_RAM is set.
Signed-off-by: Philippe De Muyter <phdm@macqel.be>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
There is no point in displaying the TS5500-specific driver entries if
TS5500 board support itself isn't enabled.
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
The site-specific OOM messages are unnecessary, because they
duplicate the MM subsystem generic OOM message.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
None of these files are actually using any __init type directives
and hence don't need to include <linux/init.h>. Most are just a
left over from __devinit and __cpuinit removal, or simply due to
code getting copied from one driver to the next.
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Brian Norris <computersforpeace@gmail.com>
Cc: linux-mtd@lists.infradead.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
[Brian: dropped one incorrect hunk]
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
- Add me (Brian Norris) as an additional MTD maintainer (it'd be nice to get
David's "ack" for this; I'm sure he approves, but he's been pretty silent
lately)
- Add Ezequiel Garcie as maintainer for the pxa3xx NAND driver
- Last (?) round of pxa3xx improvements for supporting Armada 370/XP
- Typical churn in driver boilerplate (OOM messages, printk()'s, devm_*, etc.)
- Quad read mode support for SPI NOR driver (m25p80)
- Update Davinci NAND driver to prepare for use on new platforms
- Begin to kill off NAND_MAX_{PAGE,OOB}SIZE macros; more work is pending
- Miscellaneous NAND device support (new IDs)
- Add READ RETRY support for Micron MLC NAND
- Support new GPMI NAND ECC layout device-tree binding
- Avoid mapping stack/vmalloc() memory for GPMI NAND DMA
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Merge tag 'for-linus-20140127' of git://git.infradead.org/linux-mtd
Pull MTD updates from Brian Norris:
- Add me (Brian Norris) as an additional MTD maintainer (it'd be nice to get
David's "ack" for this; I'm sure he approves, but he's been pretty silent
lately)
- Add Ezequiel Garcie as maintainer for the pxa3xx NAND driver
- Last (?) round of pxa3xx improvements for supporting Armada 370/XP
- Typical churn in driver boilerplate (OOM messages, printk()'s, devm_*, etc.)
- Quad read mode support for SPI NOR driver (m25p80)
- Update Davinci NAND driver to prepare for use on new platforms
- Begin to kill off NAND_MAX_{PAGE,OOB}SIZE macros; more work is pending
- Miscellaneous NAND device support (new IDs)
- Add READ RETRY support for Micron MLC NAND
- Support new GPMI NAND ECC layout device-tree binding
- Avoid mapping stack/vmalloc() memory for GPMI NAND DMA
* tag 'for-linus-20140127' of git://git.infradead.org/linux-mtd: (151 commits)
mtd: gpmi: add sanity check when mapping DMA for read_buf/write_buf
mtd: gpmi: allocate a proper buffer for non ECC read/write
mtd: m25p80: Set rx_nbits for Quad SPI transfers
mtd: m25p80: Enable Quad SPI read transfers for s25fl512s
mtd: s3c2410: Merge plat/regs-nand.h into s3c2410.c
mtd: mtdram: add missing 'const'
mtd: m25p80: assign default read command
mtd: nuc900_nand: remove redundant return value check of platform_get_resource()
mtd: plat_nand: remove redundant return value check of platform_get_resource()
mtd: nand: add Intel manufacturer ID
mtd: nand: add SanDisk manufacturer ID
mtd: nand: add support for Samsung K9LCG08U0B
mtd: nand: pxa3xx: Add support for 2048 bytes page size devices
mtd: m25p80: Use OPCODE_QUAD_READ_4B for 4-byte addressing
mtd: nand: don't use {read,write}_buf for 8-bit transfers
mtd: nand: use __packed shorthand
mtd: nand: support Micron READ RETRY
mtd: nand: add generic READ RETRY support
mtd: nand: add ONFI vendor block for Micron
mtd: nand: localize ECC failures per page
...
Use devm_*() functions to make cleanup paths simpler.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
ioremap_cache is more aligned with other architectures.
There are only 2 users of this in the kernel: pxa2xx-flash and Xen.
This fixes Xen build failures on arm64:
drivers/tty/hvc/hvc_xen.c:233:2: error: implicit declaration of function 'ioremap_cached' [-Werror=implicit-function-declaration]
drivers/xen/grant-table.c:1174:3: error: implicit declaration of function 'ioremap_cached' [-Werror=implicit-function-declaration]
drivers/xen/xenbus/xenbus_probe.c:778:4: error: implicit declaration of function 'ioremap_cached' [-Werror=implicit-function-declaration]
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Use devm_kzalloc() to make cleanup paths simpler. Also, checking
return value of devm_kzalloc() is added in order to check if the
allocation succeded.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: John Crispin <blogic@openwrt.org>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
The driver core clears the driver data to NULL after device_release
or on probe failure. Thus, it is not needed to manually clear the
device driver data to NULL.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
The driver core clears the driver data to NULL after device_release
or on probe failure. Thus, it is not needed to manually clear the
device driver data to NULL.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
The driver core clears the driver data to NULL after device_release
or on probe failure. Thus, it is not needed to manually clear the
device driver data to NULL.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Casting the return value which is a void pointer is redundant.
The conversion from void pointer to any other pointer type is
guaranteed by the C programming language.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Added missing __iomem annotation and staticized local symbols
in order to fix the following sparse warnings:
drivers/mtd/maps/cfi_flagadm.c:58:17: warning: symbol 'flagadm_map' was not declared. Should it be static?
drivers/mtd/maps/cfi_flagadm.c:64:22: warning: symbol 'flagadm_parts' was not declared. Should it be static?
drivers/mtd/maps/cfi_flagadm.c:115:18: warning: cast removes address space of expression
drivers/mtd/maps/cfi_flagadm.c:115:18: warning: incorrect type in argument 1 (different address spaces)
drivers/mtd/maps/cfi_flagadm.c:115:18: expected void volatile [noderef] <asn:2>*addr
drivers/mtd/maps/cfi_flagadm.c:115:18: got void *<noident>
drivers/mtd/maps/cfi_flagadm.c:126:26: warning: cast removes address space of expression
drivers/mtd/maps/cfi_flagadm.c:126:26: warning: incorrect type in argument 1 (different address spaces)
drivers/mtd/maps/cfi_flagadm.c:126:26: expected void volatile [noderef] <asn:2>*addr
drivers/mtd/maps/cfi_flagadm.c:126:26: got void *<noident>
drivers/mtd/maps/cfi_flagadm.c:127:36: warning: Using plain integer as NULL pointer
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Added missing __iomem annotation and used NULL instead of 0
in order to fix the following sparse warnings:
drivers/mtd/maps/impa7.c:82:32: warning: Using plain integer as NULL pointer
drivers/mtd/maps/impa7.c:96:34: warning: cast removes address space of expression
drivers/mtd/maps/impa7.c:96:34: warning: incorrect type in argument 1 (different address spaces)
drivers/mtd/maps/impa7.c:96:34: expected void volatile [noderef] <asn:2>*addr
drivers/mtd/maps/impa7.c:96:34: got void *<noident>
drivers/mtd/maps/impa7.c:108:34: warning: cast removes address space of expression
drivers/mtd/maps/impa7.c:108:34: warning: incorrect type in argument 1 (different address spaces)
drivers/mtd/maps/impa7.c:108:34: expected void volatile [noderef] <asn:2>*addr
drivers/mtd/maps/impa7.c:108:34: got void *<noident>
drivers/mtd/maps/impa7.c:109:45: warning: Using plain integer as NULL pointer
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Use the wrapper function for retrieving the platform data instead of
accessing dev->platform_data directly.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
JEDEC device support was removed in v2.6.22. (It had been marked as
BROKEN (indirectly) since at least v2.6.12.)
When it was removed the two JEDEC mapping drivers that depended on it
should have been removed too. Do so now.
Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Acked-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
The driver core clears the driver data to NULL after device_release
or on probe failure, since commit 0998d06310
(device-core: Ensure drvdata = NULL when no driver is bound).
Thus, it is not needed to manually clear the device driver data to NULL.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
The driver core clears the driver data to NULL after device_release
or on probe failure, since commit 0998d06310
(device-core: Ensure drvdata = NULL when no driver is bound).
Thus, it is not needed to manually clear the device driver data to NULL.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Marc Kleine-Budde <mkl@blackshift.org>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
The driver core clears the driver data to NULL after device_release
or on probe failure, since commit 0998d06310
(device-core: Ensure drvdata = NULL when no driver is bound).
Thus, it is not needed to manually clear the device driver data to NULL.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
The driver core clears the driver data to NULL after device_release
or on probe failure, since commit 0998d06310
(device-core: Ensure drvdata = NULL when no driver is bound).
Thus, it is not needed to manually clear the device driver data to NULL.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
The driver core clears the driver data to NULL after device_release
or on probe failure, since commit 0998d06310
(device-core: Ensure drvdata = NULL when no driver is bound).
Thus, it is not needed to manually clear the device driver data to NULL.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
The driver core clears the driver data to NULL after device_release
or on probe failure, since commit 0998d06310
(device-core: Ensure drvdata = NULL when no driver is bound).
Thus, it is not needed to manually clear the device driver data to NULL.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
The driver core clears the driver data to NULL after device_release
or on probe failure, since commit 0998d06310
(device-core: Ensure drvdata = NULL when no driver is bound).
Thus, it is not needed to manually clear the device driver data to NULL.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This patch provide migration to using "mtd-ram" driver instead of using
special driver for handling NVRAM memory.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Olof Johansson <olof@lixom.net>
- Support partitions larger than 4GiB in device tree
- Support for new SPI chips
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Merge tag 'for-linus-20130509' of git://git.infradead.org/linux-mtd
Pull MTD update from David Woodhouse:
- Lots of cleanups from Artem, including deletion of some obsolete
drivers
- Support partitions larger than 4GiB in device tree
- Support for new SPI chips
* tag 'for-linus-20130509' of git://git.infradead.org/linux-mtd: (83 commits)
mtd: omap2: Use module_platform_driver()
mtd: bf5xx_nand: Use module_platform_driver()
mtd: denali_dt: Remove redundant use of of_match_ptr
mtd: denali_dt: Change return value to fix smatch warning
mtd: denali_dt: Use module_platform_driver()
mtd: denali_dt: Fix incorrect error check
mtd: nand: subpage write support for hardware based ECC schemes
mtd: omap2: use msecs_to_jiffies()
mtd: nand_ids: use size macros
mtd: nand_ids: improve LEGACY_ID_NAND macro a bit
mtd: add 4 Toshiba nand chips for the full-id case
mtd: add the support to parse out the full-id nand type
mtd: add new fields to nand_flash_dev{}
mtd: sh_flctl: Use of_match_ptr() macro
mtd: gpio: Use of_match_ptr() macro
mtd: gpio: Use devm_kzalloc()
mtd: davinci_nand: Use of_match_ptr()
mtd: dataflash: Use of_match_ptr() macro
mtd: remove h720x flash support
mtd: onenand: remove OneNAND simulator
...
GENERIC_GPIO is now equivalent to GPIOLIB and features that depended on
GENERIC_GPIO can now depend on GPIOLIB to allow removal of this option.
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
The h720x platform support is going away in linux-3.10, so the
MTD driver will also not be needed any more.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Be a bit stricter and add few more 'const' qualifiers.
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Be a bit stricter and add few more 'const' qualifiers.
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Be a bit stricter and add few more 'const' qualifiers.
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Be a bit stricter and add few more 'const' qualifiers.
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This driver depends on CONFIG_IXP2000 which is not defined anywhere, which
means this driver is dead.
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This driver is marked as broken for very long time. Most probably this board is
just something ancient no one cares about anyway.
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This driver depends on the CONFIG_TQM8xxL symbol, which is not defined
anywhere, which means that this driver is dead.
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
