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shiraz.hashim@st.com email-id doesn't exist anymore as he has left the
company. Replace ST's id with shiraz.linux.kernel@gmail.com.
It also updates .mailmap file to fix address for 'git shortlog'.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Shiraz Hashim <shiraz.linux.kernel@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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GET_FEATURES and SET_FEATURES also need byte-addressing on 16-bit devices.
Signed-off-by: David Mosberger <davidm@egauge.net>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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Add the "page" argument for the read_subpage hook. With this argument,
the implementation of this hook could prints out more accurate information
for debugging.
Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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Signed-off-by: Christian Riesch <christian.riesch@omicron.at>
Cc: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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This patch adds the parsing code for the JEDEC compliant NAND.
Since we need the 0x40 as the column address, this patch also
makes the NAND_CMD_PARAM to use the 8-bit address only.
Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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Add a helper to get the supported features for JEDEC compliant NAND.
Also add a macro JEDEC_FEATURE_16_BIT_BUS.
Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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Add the jedec_version field, and add an anonymous union which
contains the nand_onfi_params and nand_jedec_params.
Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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Create the nand_jedec_params{} and jedec_ecc_info{} according to
the JESD230A (Revision of JESD230, October 2012).
Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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The NAND command helpers tend to automatically shift the column address
for x16 bus devices, since most commands expect a word address, not a
byte address. The Read ID command, however, expects an 8-bit address
(i.e., 0x00, 0x20, or 0x40 should not be translated to 0x00, 0x10, or
0x20).
This fixes the column address for a few drivers which imitate the
nand_base defaults. Note that I don't touch sh_flctl.c, since it already
handles this problem slightly differently (note its comment "READID is
always performed using an 8-bit bus").
I have not tested this patch, as I only have x8 parts up for testing at
this point. Hopefully that can change soon...
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Tested-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Tested-By: Pekon Gupta <pekon@ti.com>
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There is no reference to these two macros now.
Just remove them.
Signed-off-by: Huang Shijie <shijie8@gmail.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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The patch converts the arrays to buffer pointers for nand_buffers{}.
The cafe_nand.c is the only NAND_OWN_BUFFERS user which allocates
nand_buffers{} itself.
This patch disables the DMA for nand_scan_ident, and restores the DMA
status after we finish the nand_scan_ident. This way, we can get page
size and OOB size and use them to allocate cafe->dmabuf.
Since the cafe_nand.c uses the NAND_ECC_HW_SYNDROME ECC mode, we do not
allocate the buffers for @ecccalc and @ecccode.
Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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mtdram_init_device() wasn't updated along with mtd_partition.name.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
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Add the Intel manufacturer Id.
Tested with Intel JS29F32G08ACMD1(4096 + 224) which is ONFI 2.0 compliant
nand.
Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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Add the manufactor ID for SanDisk.
Make preparation for SanDisk SDTNRGAMA-008G.
Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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According to the Open NAND Flash Interface Specification (ONFI) Revision
3.1 "Parameters are always transferred on the lower 8-bits of the data
bus." for the Get Features and Set Features commands.
So using read_buf and write_buf is wrong for 16-bit wide nand chips as
they use I/O[15:0]. The Get Features command is easily fixed using 4
times the read_byte callback. For Set Features implement a new
overwritable callback "write_byte". Still I expect the default to work
just fine for all controllers and making it overwriteable was just done
for symmetry.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
[Brian: fixed warning]
Tested-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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To be consistent with the rest of include/linux/mtd/nand.h, we should
use the __packed shorthand instead of __attribute__((packed)).
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Acked-by: Huang Shijie <b32955@freescale.com>
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Micron provides READ RETRY support via the ONFI vendor-specific
parameter block (to indicate how many read-retry modes are available)
and the ONFI {GET,SET}_FEATURES commands with a vendor-specific feature
address (to support reading/switching the current read-retry mode).
The recommended sequence is as follows:
1. Perform PAGE_READ operation
2. If no ECC error, we are done
3. Run SET_FEATURES with feature address 89h, mode 1
4. Retry PAGE_READ operation
5. If ECC error and there are remaining supported modes, increment the
mode and return to step 3. Otherwise, this is a true ECC error.
6. Run SET_FEATURES with feature address 89h, mode 0, to return to the
default state.
This patch implements the chip->setup_read_retry() callback for
Micron and fills in the chip->read_retries.
Tested on Micron MT29F32G08CBADA, which supports 8 read-retry modes.
The Micron vendor-specific table was checked against the datasheets for
the following Micron NAND:
Needs retry Cell-type Part number Vendor revision Byte 180
----------- --------- ---------------- --------------- ------------
No SLC MT29F16G08ABABA 1 Reserved (0)
No MLC MT29F32G08CBABA 1 Reserved (0)
No SLC MT29F1G08AACWP 1 0
Yes MLC MT29F32G08CBADA 1 08h
Yes MLC MT29F64G08CBABA 2 08h
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Acked-by: Huang Shijie <b32955@freescale.com>
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Modern MLC (and even SLC?) NAND can experience a large number of
bitflips (beyond the recommended correctability capacity) due to drifts
in the voltage threshold (Vt). These bitflips can cause ECC errors to
occur well within the expected lifetime of the flash. To account for
this, some manufacturers provide a mechanism for shifting the Vt
threshold after a corrupted read.
The generic pattern seems to be that a particular flash has N read retry
modes (where N = 0, traditionally), and after an ECC failure, the host
should reconfigure the flash to use the next available mode, then retry
the read operation. This process repeats until all bitfips can be
corrected or until the host has tried all available retry modes.
This patch adds the infrastructure support for a
vendor-specific/flash-specific callback, used for setting the read-retry
mode (i.e., voltage threshold).
For now, this patch always returns the flash to mode 0 (the default
mode) after a successful read-retry, according to the flowchart found in
Micron's datasheets. This may need to change in the future if it is
determined that eventually, mode 0 is insufficient for the majority of
the flash cells (and so for performance reasons, we should leave the
flash in mode 1, 2, etc.).
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Acked-by: Huang Shijie <b32955@freescale.com>
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Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Acked-by: Huang Shijie <b32955@freescale.com>
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register_mtd_parser never fails; hence make it return void.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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deregister_mtd_parser never fails; hence make it return void.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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s/strenght/strength/
This field isn't used anywhere, so this rename is safe.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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This allows to drop a few casts.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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Now that the last user of NAND_BBT_SCANALLPAGES has been removed, let's
kill this peculiar BBT feature flag.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Reviewed-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
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Hardware:
CPU: XLP832,the 64-bit OS
NOR Flash:S29GL128S 128M
Software:
Kernel:2.6.32.41
Filesystem:JFFS2
When writing files, errors appear:
Write len 182 but return retlen 180
Write of 182 bytes at 0x072c815c failed. returned -5, retlen 180
Write len 186 but return retlen 184
Write of 186 bytes at 0x072caff4 failed. returned -5, retlen 184
These errors exist only in 64-bit systems,not in 32-bit systems. After analysis, we
found that the left shift operation is wrong in map_word_load_partial. For instance:
unsigned char buf[3] ={0x9e,0x3a,0xea};
map_bankwidth(map) is 4;
for (i=0; i < 3; i++) {
int bitpos;
bitpos = (map_bankwidth(map)-1-i)*8;
orig.x[0] &= ~(0xff << bitpos);
orig.x[0] |= buf[i] << bitpos;
}
The value of orig.x[0] is expected to be 0x9e3aeaff, but in this situation(64-bit
System) we'll get the wrong value of 0xffffffff9e3aeaff due to the 64-bit sign
extension:
buf[i] is defined as "unsigned char" and the left-shift operation will convert it
to the type of "signed int", so when left-shift buf[i] by 24 bits, the final result
will get the wrong value: 0xffffffff9e3aeaff.
If the left-shift bits are less than 24, then sign extension will not occur. Whereas
the bankwidth of the nor flash we used is 4, therefore this BUG emerges.
Signed-off-by: Pang Xunlei <pang.xunlei@zte.com.cn>
Signed-off-by: Zhang Yi <zhang.yi20@zte.com.cn>
Signed-off-by: Lu Zhongjun <lu.zhongjun@zte.com.cn>
Cc: <stable@vger.kernel.org>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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This patch moves the char and block major number definitions
to major.h to be with the rest of the major numbers.
While doing this, include major.h in the files that need it.
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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This helper detects that whether the mtd's type is nand type.
Now, it's clear that the MTD_NANDFLASH stands for SLC nand only.
So use the mtd_type_is_nand() to replace the old check method
to do the nand type (include the SLC and MLC) check.
Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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The @cellinfo fields contains unused information, such as write caching,
internal chip numbering, etc. But we only use it to check the SLC or MLC.
This patch tries to make it more clear and simple, renames the @cellinfo
to @bits_per_cell.
In order to avoiding the bisect issue, this patch also does the following
changes:
(0) add a macro NAND_CI_CELLTYPE_SHIFT to avoid the hardcode.
(1) add a helper to parse out the cell type : nand_get_bits_per_cell()
(2) parse out the cell type for extended-ID chips and the full-id nand chips.
Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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Add a helper to check if a nand chip is SLC or MLC.
This helper makes the code more readable.
Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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This field is never used, except to print it out.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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In order to implement the NAND boot for some Freescale's chips, such as
imx23/imx28/imx50/imx6, we use a tool (called kobs-ng) to burn the uboot
and some metadata to nand chip. And the ROM code will use the metadata to
configrate the BCH, and to find the uboot.
The ECC information(ecc step size, ecc strength) which is used to configrure
the BCH is part of the metadata. The kobs-ng can get the ecc strength from
the sys node /sys/*/ecc_strength now. But it can not get the ecc step size.
This patch adds a new field to store the ecc step size in mtd_info{}, and
it makes preparation for the next patches.
Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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Add an instance of an anonymous struct to store the ECC info for full id
nand chips.
@ecc.strength_ds: ECC correctability from the datasheet.
@ecc.step_ds: ECC size required by the @ecc.strength_ds,
These two fields are all from the datasheet.
Also add the necessary macros to make the code simple and clean.
Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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add a helper to get the supported features for ONFI nand.
Also add the neccessary macros.
Signed-off-by: Huang Shijie <b32955@freescale.com>
Reviewed-and-tested-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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Since the ONFI 2.1, the onfi spec adds the Extended Parameter Page
to store the ECC info.
The onfi spec tells us that if the nand chip's recommended ECC codeword
size is not 512 bytes, then the @ecc_bits is 0xff. The host _SHOULD_ then
read the Extended ECC information that is part of the extended parameter
page to retrieve the ECC requirements for this device.
This patch adds
[1] the neccessary fields for nand_onfi_params{},
[2] and adds the onfi_ext_ecc_info{} for Extended ECC information,
[3] adds onfi_ext_section{} for extended sections,
[4] and adds onfi_ext_param_page{} for the Extended Parameter Page.
Acked-by: Pekon Gupta <pekon@ti.com>
Signed-off-by: Huang Shijie <b32955@freescale.com>
Reviewed-and-tested-by: Brian Norris <computersforpeace@gmail.com>
[Brian: amended for checkpatch.pl]
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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1.) Why add the ECC information to the nand_chip{} ?
Each nand chip has its requirement for the ECC correctability, such as
"4bit ECC for each 512Byte" or "40bit ECC for each 1024Byte".
This ECC info is very important to the nand controller, such as gpmi.
Take the Micron MT29F64G08CBABA for example, its geometry is
8KiB page size, 744 bytes oob size and it requires 40bit ECC per 1KiB.
If we do not provide the ECC info to the gpmi nand driver, it has to
calculate the ECC correctability itself. The gpmi driver will gets the 56bit
ECC for per 1KiB which is beyond its BCH's 40bit ecc capibility.
The gpmi will quits in this case. But in actually, the gpmi can supports
this nand chip if it can get the right ECC info.
2.) about the new fields.
The @ecc_strength_ds stands for the ecc bits needed within the @ecc_step_ds.
The two fields should be set from the nand chip's datasheets.
For example:
"4bit ECC for each 512Byte" could be:
@ecc_strength_ds = 4, @ecc_step_ds = 512.
"40bit ECC for each 1024Byte" could be:
@ecc_strength_ds = 40, @ecc_step_ds = 1024.
3.) Why do not re-use the @strength and @size in the nand_ecc_ctrl{}?
The @strength and @size in nand_ecc_ctrl{} is used by the nand controller
driver, while the @ecc_strength_ds and @ecc_step_ds are get from the datasheet.
Signed-off-by: Huang Shijie <b32955@freescale.com>
Reviewed-and-tested-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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NAND_BBT_SCANEMPTY is a strange, badly-supported option with omap as its
single remaining user.
NAND_BBT_SCANEMPTY was likely used by accident in omap2[1]. And anyway,
omap2 doesn't scan the chip for bad blocks (courtesy of
NAND_SKIP_BBTSCAN), and so its use of this option is irrelevant.
This patch drops the NAND_BBT_SCANEMPTY option.
[1] http://lists.infradead.org/pipermail/linux-mtd/2012-July/042902.html
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Cc: Ivan Djelic <ivan.djelic@parrot.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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nand_base.c shouldn't have to know the implementation details of
nand_bbt's in-memory BBT. Specifically, nand_base shouldn't perform the
bit masking and shifting to isolate a BBT entry.
Instead, just move some of the BBT code into a new nand_markbad_bbt()
interface. This interface allows external users (i.e., nand_base) to
mark a single block as bad in the BBT. Then nand_bbt will take care of
modifying the in-memory BBT and updating the flash-based BBT (if
applicable).
Signed-off-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>
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Spansion's S34MLx chips support ONFI but not the GET/SET FEATURES calls.
Signed-off-by: David Mosberger <dmosberger@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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Add nand bank selection and timings to the device tree bindings.
Signed-off-by: Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>
[Added some documentation]
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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The oob size of Micron's MT29F64G08CBABAWP is 744 bytes.
So increase the NAND_MAX_OOBSIZE to 744.
Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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This remedies a few problems:
(1) The use of "the" vs. "a" is a little confusing, IMO.
(2) nand_chip.block_bad is used exclusively for checking the OOB bad
block markers of a NAND. Any BBT functionality is handled in
nand_bbt.c, so this description should differentiate itself from
nand_bbt.c.
Signed-off-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>
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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
...
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Both existing instances always return 0 and even if they didn't,
the value would be lost on the way out. Just don't bother...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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This patch adds support for subpage (partial-page) writes when using
hardware based ECC schemes.
Advantages:
(1) reduces storage overhead when using file-systems like UBIFS, which
store LEB header at page-size granularity.
(2) allows independent subpage writes, thereby increasing NAND storage
efficiency for non-page aligned data.
+ updated cafe_nand and lpc32xx_mlc NAND drivers for change in
chip->write_page interface.
Signed-off-by: Gupta, Pekon <pekon@ti.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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Notice that all the flashes belonging to the "legacy ID" class have 512 bytes
NAND page. This means we may simplify the 'LEGACY_ID_NAND()' macro as well as
the NAND ID table a little.
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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As time goes on, we begin to meet the situation that we can not get enough
information from some nand chips's id data. Take some Toshiba's nand chips
for example. I have 4 Toshiba's nand chips in my hand:
TC58NVG2S0F, TC58NVG3S0F, TC58NVG5D2, TC58NVG6D2
When we read these chips' datasheets, we will get the geometry of these chips:
TC58NVG2S0F : 4096 + 224
TC58NVG3S0F : 4096 + 232
TC58NVG5D2 : 8192 + 640
TC58NVG6D2 : 8192 + 640
But we can not parse out the correct oob size for these chips from the id data.
This patch adds some new fields to the nand_flash_dev{}:
@id_len: the valid length of the id data. See the comments in
nand_id_has_period()
@oobsize: the oob size.
Signed-off-by: Huang Shijie <b32955@freescale.com>
Reviewed-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>
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Introduce a helpful macro for the maximum NAND ID sequence length instead of
using the "8" magic number.
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Acked-by: Huang Shijie <shijie8@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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Use 'unsigned int' instead of 'unsigned long' in the NAND chip description data
structure, because 32-bits is more than enough for our purposes. We do not need
64-bits, which is what we end up on 64-bit architectures. We declare many
instances of this data structure, so this should help saving some amount of
memory.
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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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>
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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>
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