| 6a918bade9dab40aaef80559bd1169c69e8d69cb |
|
11-Mar-2012 |
Mike Dunn <mikedunn@newsguy.com> |
mtd: flash drivers set ecc strength
Flash device drivers initialize 'ecc_strength' in struct mtd_info, which is the
maximum number of bit errors that can be corrected in one writesize region.
Drivers using the nand interface intitialize 'strength' in struct nand_ecc_ctrl,
which is the maximum number of bit errors that can be corrected in one ecc step.
Nand infrastructure code translates this to 'ecc_strength'.
Also for nand drivers, the nand infrastructure code sets ecc.strength for ecc
modes NAND_ECC_SOFT, NAND_ECC_SOFT_BCH, and NAND_ECC_NONE. It is set in the
driver for all other modes.
Signed-off-by: Mike Dunn <mikedunn@newsguy.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
|
| 88146872f0fbd89e425e3e0db71d42df8db9d932 |
|
23-May-2011 |
Jamie Iles <jamie@jamieiles.com> |
mtd: bf5xx_nand: convert to mtd_device_register()
Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS
preprocessor conditionals as partitioning is always available.
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>
|
| 5954c47c2194abcdeeae5f752e64b7c75770dbd3 |
|
17-Oct-2010 |
Mike Frysinger <vapier@gentoo.org> |
mtd: Blackfin NFC: fix badblock location with BootROM OOB
The bbt structure isn't actually used, just the badblockpos. This lets
the driver correctly handle badblocks with the different OOB layout with
certain sized flashes. Previously, the blocks would all be reported as
bad and be completely unusable.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
|
| 8b865d5efd9205b131dd9a43a6f450c05d38aaa1 |
|
28-Aug-2010 |
Mike Frysinger <vapier@gentoo.org> |
mtd: Blackfin NFC: fix invalid free in remove()
Since info->mtd isn't dynamically allocated, we shouldn't attempt to
kfree() it. Otherwise we get random fun corruption when unloading
the driver built as a module.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
|
| eac15a429a27cb74115daaf4c1127c5e854d50e4 |
|
28-Aug-2010 |
Mike Frysinger <vapier@gentoo.org> |
mtd: Blackfin NFC: fix build error after nand_scan_ident() change
Seems some patches got out sync when being merged. The Blackfin NFC
driver was updated to use nand_scan_ident(), but it missed the change
where nand_scan_ident() now takes 3 arguments. So update this driver
to fix build failures.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
|
| d2350c2ab51df7088d3db73a4c85ad73ded37a01 |
|
05-Aug-2010 |
Barry Song <barry.song@analog.com> |
mtd: Blackfin NFC: fix nand busy detection
The IRQSTAT register is a W1C register used by the interrupt handler and
may have its BUSY bit changed. This makes it somewhat unreliable for the
polling devready function. So switch it over to use the BUSY bit in the
STAT register that always reflects the current state of the hardware.
This fixes driver hangs seen when the NAND flash is under heavy system
load (like I/O benchmarks).
Signed-off-by: Barry Song <barry.song@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
|
| 44299179c0e87cc6d8b753c1ca8c97b1cf9340e1 |
|
05-Aug-2010 |
Barry Song <barry.song@analog.com> |
mtd: Blackfin NFC: fix handling of page sizes
Rather than forcing the platform resources to declare the desired page
size, simply use the existing information passed down to us by the higher
layers. This way we work out of the box with all flash chips that the
kernel knows about.
Signed-off-by: Barry Song <barry.song@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
|
| 752b957a37ee1cc09fccb39a8bc5843edf32119b |
|
05-Aug-2010 |
Barry Song <barry.song@analog.com> |
mtd: Blackfin NFC: wait for the ECC reset to finish
When resetting the ECC registers/counters, the bit will automatically
clear itself once the reset has actually finished. So make sure we
wait for that to occur before doing anything else rather than assuming
everything is peachy and proceeding with stale ECC values.
Signed-off-by: Barry Song <barry.song@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
|
| 00355b0baadf949f02ab7d3e2bd222e3fbcc72ee |
|
05-Aug-2010 |
Barry Song <barry.song@analog.com> |
mtd: Blackfin NFC: fix typo for read/write delay setup
We used the platform rd_dly field when we meant to use the wr_dly field.
Signed-off-by: Barry Song <barry.song@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
|
| fd508da2208696db146cd1be2bb2e8b799f6e3a2 |
|
05-Aug-2010 |
Barry Song <barry.song@analog.com> |
mtd: Blackfin NFC: make sure to check NAND_ALE in cmd_ctrl
The NAND base may send some controls which are neither CLE nor ALE, so
we need to explicitly check both instead of assuming things are always
one or the other. Otherwise, we sometimes send out illegal addresses
to the NAND device.
Signed-off-by: Barry Song <barry.song@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
|
| 085d45fb5216c25b69103e5d861fabdc4389e221 |
|
05-Aug-2010 |
Barry Song <barry.song@analog.com> |
mtd: Blackfin NFC: fix raw page write/read handling
Our write_buf/read_buf funcs always do ECC in HW ECC mode. That is not
needed for raw funcs. In fact, write_buf/read_buf should be a pure func
for data input/output while chip->ecc.hwctl controls ECC. Unfortunately,
we can't separate ECC from normal data input/output in our NFC, so our DMA
write_buf/read_buf entries are coupled with ECC operations closely.
Thus we need to provide dedicated read_page_raw/write_page_raw funcs where
we do non-DMA transactions so as to avoid automatic ECC.
Signed-off-by: Barry Song <barry.song@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
|
| 7ee064c90b3a65aa0c8d8cd87681177645db494e |
|
05-Aug-2010 |
Barry Song <barry.song@analog.com> |
mtd: Blackfin NFC: delete useless comment about jffs2
The low level NAND driver doesn't care about filesystems, so punt the
local comment indicating otherwise.
Signed-off-by: Barry Song <barry.song@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
|
| ac39ee304ac33f15107e42adb5ee5b0d0ce2dc4a |
|
09-Mar-2010 |
Mike Frysinger <vapier@gentoo.org> |
mtd: Blackfin NFC: localize MMR bit masks
Convert all magic numbers into appropriate defines, and move the defines
out of the global namespace and into this one driver. No other driver
needs to care about the MMR layout anyways.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
|
| c3a9f35673290f49ec115d36ad283961c82c135a |
|
26-May-2009 |
Cliff Cai <cliff.cai@analog.com> |
mtd: blackfin NFC: fix hang when using NAND on BF527-EZKITs
The DMAs have different bit sizes on BF52x and BF54x. From the PHRM:
"The 16-bit DMA Access Bus (DAB) connects the DMA controller to the
on-chip peripherals, PPI, SPI, Ethernet MAC, the SPORTs, NFC,
HOSTDP and the UARTs."
32-bit DMA won't work for BF52x.
Signed-off-by: Cliff Cai <cliff.cai@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
|
| 530c3b60658687e2ad7bf98ef83631a8280ae8a6 |
|
26-May-2009 |
Mike Frysinger <vapier@gentoo.org> |
mtd: blackfin NFC: remove pointless return value in bf5xx_nand_dma_rw
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
|
| bfc492571e7ad1eb4b9fe3ac8ab0a7cdaecf8eca |
|
04-Mar-2009 |
Mike Frysinger <vapier.adi@gmail.com> |
[MTD] [NAND] Blackfin NFC Driver: drop pointless casts with set_dma_callback()
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
|
| 8d30cab06920f9efb7e089f2c69e451b2a637d8a |
|
04-Mar-2009 |
Mike Frysinger <vapier.adi@gmail.com> |
[MTD] [NAND] Blackfin NFC Driver: mark bf5xx_nand_add_partition() as __devinit
The bf5xx_nand_add_partition() func is only called by __devinit functions,
so put it into the __devinit section as well
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
|
| 08d2503ecc2337275942c1f52822b7a464c0c0a3 |
|
04-Mar-2009 |
Mike Frysinger <vapier.adi@gmail.com> |
[MTD] [NAND] Blackfin NFC Driver: do not clobber DMAC1_PERIMUX
Only set DMAC1_PERIMUX once we have requested and been granted the dma
channel to prevent breaking other peripherals in the error case
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
|
| 4f0ca70e52b67f41287d853f0d572dafa875e485 |
|
30-Jul-2008 |
Bryan Wu <cooloney@kernel.org> |
[MTD] [NAND] Blackfin NFC Driver: Cleanup the error exit path of bf5xx_nand_probe function
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Cc: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
|
| 0ee002b041cb45ab3cc5384b86271d41ccf90fe1 |
|
30-Jul-2008 |
Mike Frysinger <vapier.adi@gmail.com> |
[MTD] [NAND] Blackfin NFC Driver: use standard dev_err() rather than printk()
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
|
| 2445af3853928bf3ee7960e09f548a1b07924091 |
|
30-Jul-2008 |
Mike Frysinger <vapier.adi@gmail.com> |
[MTD] [NAND] Blackfin NFC Driver: add proper devinit/devexit markings to probe/remove functions
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
|
| fcb90ba7e9ba9a17ca5103be3f3ae3a446dadc14 |
|
30-Jul-2008 |
Mike Frysinger <vapier.adi@gmail.com> |
[MTD] [NAND] Blackfin NFC Driver: add support for the ECC layout the Blackfin bootrom uses
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
|
| cf840392e83914b9fcdbce8a8a2bc17a84cf0353 |
|
30-Jul-2008 |
Mike Frysinger <vapier.adi@gmail.com> |
[MTD] [NAND] Blackfin NFC Driver: fix bug - hw ecc calc by making sure we extract 11 bits from each register instead of 10
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
|
| e274f025e2caaadc1a6dd41adc9c9a19be075110 |
|
30-Jul-2008 |
Mike Frysinger <vapier.adi@gmail.com> |
[MTD] [NAND] Blackfin NFC Driver: fix bug - do not clobber the status from the first 256 bytes if operating on 512 pages
Singed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
|
| afc4bca63941746f1d49394620d294074150e664 |
|
24-Apr-2008 |
Michael Hennerich <michael.hennerich@analog.com> |
[MTD] [NAND] bf5xx_nand: Avoid crash if bfin_mac is installed.
http://blackfin.uclinux.org/gf/project/uclinux-dist/tracker/?action=TrackerItemEdit&tracker_item_id=4053
Singed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
|
| 1ff184225b15930ea118ac2130f074c741d34f08 |
|
18-Apr-2008 |
Kay Sievers <kay.sievers@vrfy.org> |
[MTD] [NAND] fix platform driver hotplug/coldplug
Since 43cc71eed1250755986da4c0f9898f9a635cb3bf, the platform modalias is
prefixed with "platform:". Add MODULE_ALIAS() to the hotpluggable MTD NAND
platform drivers, to re-enable auto loading.
NOTE: at91_nand for some reason disallows modular builds. I'm assuming that's
just an oversight that will be fixed.
[dbrownell@users.sourceforge.net: minor fix]
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
|
| 8e87d7820a6362b6304924befb22d1ee79b754f3 |
|
03-Feb-2008 |
Joe Perches <joe@perches.com> |
drivers/mtd/: Spelling fixes
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
|
| 5eb91034f3d825f43b3c8ace7b69f94752b7deda |
|
30-Jan-2008 |
Bryan Wu <bryan.wu@analog.com> |
[MTD] [NAND] Fix Blackfin NFC ECC calculating bug with page size 512 bytes
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
|
| f4dda0914e76feb1ff5ec349cc68f319f6a4e40f |
|
30-Jan-2008 |
Bryan Wu <bryan.wu@analog.com> |
[MTD] [NAND] Remove wrong operation in PM function of the BF54x NFC driver
There is no suspend/resume operation in NFC driver at all, currently.
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
|
| a25b7fee537ab4dbc6eb301bd455ee8d01b707f6 |
|
30-Oct-2007 |
Michael Hennerich <michael.hennerich@analog.com> |
[MTD] [NAND] Add Blackfin BF52x support in bf5xx_nand driver
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
|
| b37bde147890c8fea8369a5a4e230dabdea4ebfb |
|
02-Oct-2007 |
Bryan Wu <bryan.wu@analog.com> |
[MTD] [NAND] Blackfin on-chip NAND Flash Controller driver
This is the driver for latest Blackfin on-chip nand flash controller
- use nand_chip and mtd_info common nand driver interface
- provide both PIO and dma operation
- compiled with ezkit bf548 configuration
- use hardware 1-bit ECC
- tested with YAFFS2 and can mount YAFFS2 filesystem as rootfs
ChangeLog from try#1
- use hweight32() instead of count_bits()
- replace bf54x with bf5xx and BF54X with BF5XX
- compare against plat->page_size in 2 cases when enable hardware ECC
ChangeLog from try#2
- passed nand_test suites
- use cpu_relax() instead of busy wait loop
- some coding style issue pointed out by Andrew
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
|