linux-toradex.git/drivers/mtd/chips, branch tegra Linux kernel for Apalis and Colibri modules mtd: chips: support for the new CFI version 1.5 and write buffer programming 2012-03-30T16:13:01+00:00 Manoj Chourasia mchourasia@nvidia.com 2012-03-26T09:10:56+00:00 4a64b1e3e1e571e5b66719835f2c669cebaa894d This patch add CFI version 1.5 support. It replaces classic word programming by write buffer programming and sets the FFS write size to 512 bytes. The patch taken from spansion bug 906309 Reviewed-on: http://git-master/r/89412 (cherry picked from commit 733c7ef4b9bdc52ac95095436a5cf83aa0296da5) Change-Id: I63cbd0bad077e055d6efd4e2b4c7d26c608d1b66 Signed-off-by: Manoj Chourasia <mchourasia@nvidia.com> Reviewed-on: http://git-master/r/91307 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Amlan Kundu <akundu@nvidia.com> Reviewed-by: Varun Wadekar <vwadekar@nvidia.com> 
This patch add CFI version 1.5 support. It replaces
classic word programming by write buffer programming
and sets the FFS write size to 512 bytes.

The patch taken from spansion

bug 906309

Reviewed-on: http://git-master/r/89412
(cherry picked from commit 733c7ef4b9bdc52ac95095436a5cf83aa0296da5)

Change-Id: I63cbd0bad077e055d6efd4e2b4c7d26c608d1b66
Signed-off-by: Manoj Chourasia <mchourasia@nvidia.com>
Reviewed-on: http://git-master/r/91307
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Amlan Kundu <akundu@nvidia.com>
Reviewed-by: Varun Wadekar <vwadekar@nvidia.com>
mtd: remove duplicate assignment of chip->state 2011-05-25T01:11:13+00:00 Tadashi Abe tabe@mvista.com 2011-05-19T07:17:50+00:00 5c8d2607756a63ddf5b2f2dd368851b8febe4e72 This is a trivial patch which removes unnecessary assignment of chip->state in put_chip(). It's duplicated. Signed-off-by: Tadashi Abe <tabe@mvista.com> Acked-by: Joakim Tjernlund <joakim.tjernlund@transmode.se> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> 
This is a trivial patch which removes unnecessary assignment of chip->state
in put_chip(). It's duplicated.

Signed-off-by: Tadashi Abe <tabe@mvista.com>
Acked-by: Joakim Tjernlund <joakim.tjernlund@transmode.se>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
mtd: fix hang-up in cfi erase and read contention 2011-05-25T01:11:11+00:00 Tadashi Abe tabe@mvista.com 2011-05-19T06:58:15+00:00 100f2341e305f98de3aa12fb472771ab029cbda7 cfi erase command hangs up when erase and read contention occurs. If read runs at the same address as erase operation, read issues Erase-Suspend via get_chip() and the erase goes into sleep in wait queue. But in this case, read operation exits by time-out without waking it up. I think the other variants (0001, 0020 and lpddr) have the same problem too. Tested and verified the patch only on CFI-0002 flash, though. Signed-off-by: Tadashi Abe <tabe@mvista.com> Acked-by: Joakim Tjernlund <joakim.tjernlund@transmode.se> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> 
cfi erase command hangs up when erase and read contention occurs.
If read runs at the same address as erase operation, read issues
Erase-Suspend via get_chip() and the erase goes into sleep in wait queue.
But in this case, read operation exits by time-out without waking it up.

I think the other variants (0001, 0020 and lpddr) have the same problem too.
Tested and verified the patch only on CFI-0002 flash, though.

Signed-off-by: Tadashi Abe <tabe@mvista.com>
Acked-by: Joakim Tjernlund <joakim.tjernlund@transmode.se>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
mtd: cmdset_0002: add CFI 1.5 support for S29GL-S 2011-05-25T00:51:35+00:00 Gernot Hoyler Gernot.Hoyler@spansion.com 2011-04-11T13:53:35+00:00 c9ddab25d1b62baead4b0c5de562f1fce026dcfd This patch adds CFI 1.5 support for the new Spansion S29GL-S device family. For details, see the data sheet on the Spansion web site: http://www.spansion.com/Support/Datasheets/S29GL_128S_01GS_00_02_e.pdf Signed-off-by: Gernot Hoyler <Gernot.Hoyler@spansion.com> Acked-by: Guillaume LECERF <glecerf@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> 
This patch adds CFI 1.5 support for the new Spansion S29GL-S device family.
For details, see the data sheet on the Spansion web site:
http://www.spansion.com/Support/Datasheets/S29GL_128S_01GS_00_02_e.pdf

Signed-off-by: Gernot Hoyler <Gernot.Hoyler@spansion.com>
Acked-by: Guillaume LECERF <glecerf@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Fix common misspellings 2011-03-31T14:26:23+00:00 Lucas De Marchi lucas.demarchi@profusion.mobi 2011-03-31T01:57:33+00:00 25985edcedea6396277003854657b5f3cb31a628 Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi> 
Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
mtd: cfi: add support for AMIC flashes (e.g. A29L160AT) 2011-03-11T14:27:01+00:00 Steffen Sledz sledz@dresearch.de 2011-03-10T08:05:12+00:00 1065cda8a1a57d0d3bfccdce1a655a84439d24e0 Signed-off-by: Steffen Sledz <sledz@dresearch.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> 
Signed-off-by: Steffen Sledz <sledz@dresearch.de>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
mtd: cfi: fix writebufsize initialization 2011-03-11T14:22:46+00:00 Anatolij Gustschin agust@denx.de 2011-02-10T15:01:46+00:00 13ce77f46c79a3839e4c2ff9722c9416c165f498 When initializing mtd->writebufsize, we must take into account possible flash chip interleaving. Wrong writebufsize initialization caused UBIFS recovery issues resulting in unmountable UBIFS file system on NOR flash partitions. Signed-off-by: Anatolij Gustschin <agust@denx.de> Acked-by: Guillaume LECERF <glecerf@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> 
When initializing mtd->writebufsize, we must take into account
possible flash chip interleaving. Wrong writebufsize initialization
caused UBIFS recovery issues resulting in unmountable UBIFS file
system on NOR flash partitions.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
Acked-by: Guillaume LECERF <glecerf@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
mtd: fix race in cfi_cmdset_0001 driver 2011-03-11T12:09:07+00:00 Joakim Tjernlund Joakim.Tjernlund@transmode.se 2011-02-07T16:07:11+00:00 ecf3fde07c8dcb92a1bf3fbdfe70905d85cd00e1 As inval_cache_and_wait_for_operation() drop and reclaim the lock to invalidate the cache, some other thread may suspend the operation before reaching the for(;;) loop. Therefore the loop must start with checking the chip->state before reading status from the chip. Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se> Acked-by: Michael Cashwell <mboards@prograde.net> Acked-by: Stefan Bigler <stefan.bigler@keymile.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Cc: stable@kernel.org 
As inval_cache_and_wait_for_operation() drop and reclaim the lock
to invalidate the cache, some other thread may suspend the operation
before reaching the for(;;) loop. Therefore the loop must start with
checking the chip->state before reading status from the chip.

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
Acked-by: Michael Cashwell <mboards@prograde.net>
Acked-by: Stefan Bigler <stefan.bigler@keymile.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Cc: stable@kernel.org
mtd: jedec_probe: initialise make sector erase command variable 2011-03-11T12:05:54+00:00 Antony Pavlov antony@niisi.msk.ru 2011-02-11T10:00:37+00:00 ceabebb2bd2672f709e4454e16bc6042732e2dfe In the commit 08968041bef437ec363623cd3218c2b083537ada (mtd: cfi_cmdset_0002: make sector erase command variable) introdused a field sector_erase_cmd. In the same commit initialisation of cfi->sector_erase_cmd made in cfi_chip_setup() (file drivers/mtd/chips/cfi_probe.c), so the CFI chip has no problem: ... cfi->cfi_mode = CFI_MODE_CFI; cfi->sector_erase_cmd = CMD(0x30); ... But for the JEDEC chips this initialisation is not carried out, so the JEDEC chips have sector_erase_cmd == 0. This patch adds the missing initialisation. Signed-off-by: Antony Pavlov <antony@niisi.msk.ru> Acked-by: Guillaume LECERF <glecerf@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> CC: stable@kernel.org 
In the commit 08968041bef437ec363623cd3218c2b083537ada
 (mtd: cfi_cmdset_0002: make sector erase command variable)
introdused a field sector_erase_cmd. In the same commit initialisation
of cfi->sector_erase_cmd made in cfi_chip_setup()
(file drivers/mtd/chips/cfi_probe.c), so the CFI chip has no problem:

...
        cfi->cfi_mode = CFI_MODE_CFI;
        cfi->sector_erase_cmd = CMD(0x30);
...

But for the JEDEC chips this initialisation is not carried out,
so the JEDEC chips have sector_erase_cmd == 0.

This patch adds the missing initialisation.

Signed-off-by: Antony Pavlov <antony@niisi.msk.ru>
Acked-by: Guillaume LECERF <glecerf@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
CC: stable@kernel.org
mtd: jedec_probe: Change variable name from cfi_p to cfi 2011-03-11T12:05:24+00:00 Antony Pavlov antony@niisi.msk.ru 2011-02-11T10:00:37+00:00 efba2e313ea1b1bd69a7c4659263becf43bb1adc In the following commit, we'll need to use the CMD() macro in order to fix the initialisation of the sector_erase_cmd field. That requires the local variable to be called 'cfi', so change it first in a simple patch. Signed-off-by: Antony Pavlov <antony@niisi.msk.ru> Acked-by: Guillaume LECERF <glecerf@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> CC: stable@kernel.org 
In the following commit, we'll need to use the CMD() macro in order to
fix the initialisation of the sector_erase_cmd field. That requires the
local variable to be called 'cfi', so change it first in a simple patch.

Signed-off-by: Antony Pavlov <antony@niisi.msk.ru>
Acked-by: Guillaume LECERF <glecerf@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
CC: stable@kernel.org