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Commit Graph

3680 Commits

Author SHA1 Message Date
Richard Genoud
61de9da657 mtd: nand: use NAND_BBT_SCAN_MAXBLOCKS
In nand_bbt.c, a hardcoded value was used instead of the define meant
for that, so we use the define.

There's no functional change.

Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
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>
2012-09-29 15:54:10 +01:00
Christian Daudt
b2bc415b6b mtd: remove bcmring NAND driver
This driver is being removed as part of the cleanup of the bcmring
SoC from mainline as it is no longer maintained.

Signed-off-by: Christian Daudt <csd@broadcom.com>
Reviewed-by: Jiandong Zheng <jdzheng@broadcom.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:54:09 +01:00
m-karicheri2@ti.com
ea73fe7f0d mtd: nand: clk: preparation for switch to common clock framework
As a first step towards migrating davinci platforms to use common clock
framework, replace all instances of clk_enable() with clk_prepare_enable()
and clk_disable() with clk_disable_unprepare(). Until the platform is
switched to use the CONFIG_HAVE_CLK_PREPARE Kconfig variable, this just
adds a might_sleep() call and would work without any issues.

This will make it easy later to switch to common clk based implementation
of clk driver from DaVinci specific driver.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Reviewed-by: Mike Turquette <mturquette@linaro.org>
Acked-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:48:22 +01:00
Akinobu Mita
6ed089c0a1 mtd: mtd_nandecctest: add double bit error detection tests
This adds the double bit error detection test cases listed below:

* Prepare data block with double bit error and ECC data without
corruption, and verify that the uncorrectable error is detected by
__nand_correct_data().

* Prepare data block with single bit error and ECC data with single bit
error, and verify that the uncorrectable error is detected.

* Prepare data block without corruption and ECC data with double bit
error, and verify that the uncorrectable error is detected.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:48:02 +01:00
Akinobu Mita
200ab8454c mtd: mtd_nandecctest: add single bit error correction test
This adds the single bit error correction test case listed below:

Prepare data block without corruption and ECC data with single bit error,
and verify that the data block is preserved by __nand_correct_data().

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:47:55 +01:00
Akinobu Mita
ccaa67956c mtd: mtd_nandecctest: add no corruption test
This adds no corruptin test case listed below:

Prepare data block and ECC data with no corruption, and verify that
the data block is preserved by __nand_correct_data()

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:47:45 +01:00
Akinobu Mita
6060fb42a0 mtd: mtd_nandecctest: rewrite the test routine
This rewrites the entire test routine in order to make it easy to add more
tests by later changes and minimize duplication of each tests as much as
possible.

Now that each test is described by the members of struct nand_ecc_test:
- name: descriptive testname
- prepare: function to prepare data block and ecc with artifical corruption
- verify: function to verify the result of correcting data block

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:47:37 +01:00
Akinobu Mita
c092b43906 mtd: mtd_nandecctest: support injecting bit error for ecc code
Currently inject_single_bit_error() is used to inject single bit error
into randomly selected bit position of the 256 or 512 bytes data block.

Later change will add tests which inject bit errors into the ecc code.
Unfortunately, inject_single_bit_error() doesn't work for the ecc code
which is not a multiple of sizeof(unsigned long).

Because bit fliping at random position is done by __change_bit().
For example, flipping bit position 0 by __change_bit(0, addr) modifies
3rd byte (32bit) or 7th byte (64bit) on big-endian systems.

Using little-endian version of bitops can fix this issue.  But
little-endian version of __change_bit is not yet available.
So this defines __change_bit_le() locally in a similar fashion to
asm-generic/bitops/le.h and use it.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:47:28 +01:00
Iwo Mergler
3cf06f4f85 mtd: tests: test for multi-bit error correction
This tests ECC biterror recovery on a single NAND page. Mostly intended
to test ECC hardware and low-level NAND driver.

There are two test modes:

    0 - artificially inserting bit errors until the ECC fails
        This is the default method and fairly quick. It should
        be independent of the quality of the FLASH.

    1 - re-writing the same pattern repeatedly until the ECC fails.
        This method relies on the physics of NAND FLASH to eventually
        generate '0' bits if '1' has been written sufficient times. Depending
        on the NAND, the first bit errors will appear after 1000 or
        more writes and then will usually snowball, reaching the limits
        of the ECC quickly.

The test stops after 10000 cycles, should your FLASH be exceptionally
good and not generate bit errors before that. Try a different page
offset in that case.

Please note that neither of these tests will significantly 'use up' any FLASH
endurance. Only a maximum of two erase operations will be performed.

Signed-off-by: Iwo Mergler <Iwo.Mergler@netcommwireless.com.au>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:46:58 +01:00
Shmulik Ladkani
7baf042610 mtd: cmdlinepart: make the partitions rule more strict
Huang Shijie <shijie8@gmail.com> explains:

Assume we have a 1GiB(8Gib) NAND chip, and we set the partitions
in the command line like this:
    #gpmi-nand:100m(boot),100m(kernel),1g(rootfs)

In this case, the partition truncating occurs. The current code will
get the following result:

     ----------------------------------
        root@freescale ~$ cat /proc/mtd
        dev:    size   erasesize  name
        mtd0: 06400000 00040000 "boot"
        mtd1: 06400000 00040000 "kernel"
     ----------------------------------

It is obvious that we lost the truncated partition `rootfs` which should
be 824MiB in this case.

Also, forbid 0-sized partitions.

Signed-off-by: Shmulik Ladkani <shmulik.ladkani@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:44:25 +01:00
Sachin Kamat
2fe87aef33 mtd: nand/gpio: Convert to module_platform_driver()
module_platform_driver simplifies the code by eliminating
module_init and module_exit calls.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:44:02 +01:00
Fabio Estevam
24b82d3c35 mtd: mxc_nand: Adapt the clock name to the new clock framework
With the new i.mx clock framework the mxc_nand clock is registered as:

clk_register_clkdev(clk[nfc_gate], NULL, "mxc_nand");0")

So we do not need to pass "nfc" string and can use NULL instead.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:43:29 +01:00
Fabio Estevam
ddf16d620b mtd: mxc_nand: Convert to module_platform_driver()
Using module_platform_driver() makes the code smaller and cleaner.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:43:15 +01:00
Fabio Estevam
490e280a69 mtd: gpmi-nand: Convert to module_platform_driver()
Using module_platform_driver() makes the code smaller and cleaner.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:43:01 +01:00
Fabio Estevam
3d10095a94 mtd: gpmi-nand: Improve logging style
Improve logging style by prefixing the pr_ messages with "gpmi_nand".

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-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>
2012-09-29 15:42:15 +01:00
Marek Vasut
b277f77e5d mtd: m25p80: Disable 4KiB erase for s25sl032p, s25sl064p
Quoting from the datasheet for S25FL064P, rev. 05, Nov 18 2011, § 9.17:

"A 64 kB[sic] sector erase (D8h) command issued on 4 kB or 8 kB erase
sectors will erase all sectors in the specified 64 kB region. However,
please note that a 4 kB sector erase (20h) or 8 kB sector erase (40h)
command will not work on a 64 kB sector."

Referring further to Table 8.1 and Table 8.2, it is clearly seen
that most of the sectors are 64KiB; therefore disable this 4KiB
erase support since it's valid only on first/last sectors.

Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:40:19 +01:00
Rafał Miłecki
5fe42d5bf2 mtd: basic (read only) driver for BCMA serial flash
This registers MTD driver for serial flash platform device. Right now it
supports reading only, writing still has to be implemented.

Artem: minor amendments.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:39:12 +01:00
Akinobu Mita
1749c00ffc mtd: mtd_nandecctest: ensure alignment requirement for bitops
Currently the data blocks which is used to test single bit error
correction is allocated statically and injecting single bit error is
implemented by using __change_bit() which must operate on the memory
aligned to the size of an "unsigned long".  But there is no such
guarantee for statically allocated array.

This fix the issue by allocating the data block dynamically by
kmalloc().  It also allocate the ecc code dynamically instead of
allocating statically on stack.

The reason to allocate the ecc code dynamically is that later change
will add tests which inject bit errors into the ecc code by bitops.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:34:30 +01:00
Akinobu Mita
c5b8384abc mtd: mtd_nandecctest: improve message output
This includes the message related changes:

- Use pr_* instead of printk
- Print hexdump of ECC code if test fails
- Change log level for hexdump of data from KERN_DEBUG to KERN_INFO
- Factor out the hexdump code into a separate function

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:34:28 +01:00
Akinobu Mita
bb82477ebe mtd: mtd_nandecctest: make module_init() return appropriate errno
Return -EINVAL instead of -1 (-EPERM) when test fails.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:34:25 +01:00
Akinobu Mita
1f6edadccc mtd: mtd_nandecctest: remove unnecessary include
Including linux/jiffies.h was required for calling srandom32(jiffies)
that has already been removed.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:34:22 +01:00
Julia Lawall
6f12f59a5f mtd: autcpu12-nvram: drop frees of devm_ alloc'd data
devm free functions should not have to be explicitly used.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:33:36 +01:00
Artem Bityutskiy
fac0077cc0 mtd: cmdlinepart: minor cleanups
Clean-up the driver a bit to make it easier to read and amend the coding style.
Mostly these are changes like:

if (a)
{
}

=>

if (a) {
}

Some extra blank lines were added.
Indentation was changed to use tabs instead of spaces.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:33:17 +01:00
Artem Bityutskiy
9e0606fc4e mtd: cmdlinepart: revise error handling
This patch revises and fixes error handling in the command line mtd
partitions parser. Namely:
1. we ignored return code of 'mtdpart_setup_real()'.
2. instead of returning 0 for failure and 1 for success, teach
   'mtdpart_setup_real()' to return real error codes.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:33:00 +01:00
Rafał Miłecki
3cf7f1314e mtd: bcm47part driver for BCM47XX chipsets
This driver provides parser detecting partitions on BCM47XX flash
memories. It has many differences in comparison to BCM63XX, like:
1) Different CFE with no more trivial MAGICs
2) More partitions types (board_data, ML, POT)
3) Supporting more than 1 flash on a device
which resulted in decision of writing new parser.

It uses generic mtd interface and was successfully tested with Netgear
WNDR4500 router which has 2 flash memories: serial one and NAND one.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:32:31 +01:00
Artem Bityutskiy
aa3c5dc52e mtd: cmdlinepart: remove unneeded initialization
We do not have to initialize variables for .bss to 0 in Linux.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:29:57 +01:00
Andreas Bießmann
4d3d688da8 mtd: omap2: fix module loading
Unloading the omap2 nand driver missed to release the memory region which will
result in not being able to request it again if one want to load the driver
later on.

This patch fixes following error when loading omap2 module after unloading:
---8<---
~ $ rmmod omap2
~ $ modprobe omap2
[   37.420928] omap2-nand: probe of omap2-nand.0 failed with error -16
~ $
--->8---

This error was introduced in 67ce04bf27 which
was the first commit of this driver.

Signed-off-by: Andreas Bießmann <andreas@biessmann.de>
Cc: stable@vger.kernel.org
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:29:51 +01:00
Andreas Bießmann
7d9b110269 mtd: omap2: fix omap_nand_remove segfault
Do not kfree() the mtd_info; it is handled in the mtd subsystem and
already freed by nand_release(). Instead kfree() the struct
omap_nand_info allocated in omap_nand_probe which was not freed before.

This patch fixes following error when unloading the omap2 module:

---8<---
~ $ rmmod omap2
------------[ cut here ]------------
kernel BUG at mm/slab.c:3126!
Internal error: Oops - BUG: 0 [#1] PREEMPT ARM
Modules linked in: omap2(-)
CPU: 0    Not tainted  (3.6.0-rc3-00230-g155e36d-dirty #3)
PC is at cache_free_debugcheck+0x2d4/0x36c
LR is at kfree+0xc8/0x2ac
pc : [<c01125a0>]    lr : [<c0112efc>]    psr: 200d0193
sp : c521fe08  ip : c0e8ef90  fp : c521fe5c
r10: bf0001fc  r9 : c521e000  r8 : c0d99c8c
r7 : c661ebc0  r6 : c065d5a4  r5 : c65c4060  r4 : c78005c0
r3 : 00000000  r2 : 00001000  r1 : c65c4000  r0 : 00000001
Flags: nzCv  IRQs off  FIQs on  Mode SVC_32  ISA ARM  Segment user
Control: 10c5387d  Table: 86694019  DAC: 00000015
Process rmmod (pid: 549, stack limit = 0xc521e2f0)
Stack: (0xc521fe08 to 0xc5220000)
fe00:                   c008a874 c00bf44c c515c6d0 200d0193 c65c4860 c515c240
fe20: c521fe3c c521fe30 c008a9c0 c008a854 c521fe5c c65c4860 c78005c0 bf0001fc
fe40: c780ff40 a00d0113 c521e000 00000000 c521fe84 c521fe60 c0112efc c01122d8
fe60: c65c4860 c0673778 c06737ac 00000000 00070013 00000000 c521fe9c c521fe88
fe80: bf0001fc c0112e40 c0673778 bf001ca8 c521feac c521fea0 c02ca11c bf0001ac
fea0: c521fec4 c521feb0 c02c82c4 c02ca100 c0673778 bf001ca8 c521fee4 c521fec8
fec0: c02c8dd8 c02c8250 00000000 bf001ca8 bf001ca8 c0804ee0 c521ff04 c521fee8
fee0: c02c804c c02c8d20 bf001924 00000000 bf001ca8 c521e000 c521ff1c c521ff08
ff00: c02c950c c02c7fbc bf001d48 00000000 c521ff2c c521ff20 c02ca3a4 c02c94b8
ff20: c521ff3c c521ff30 bf001938 c02ca394 c521ffa4 c521ff40 c009beb4 bf001930
ff40: c521ff6c 70616d6f b6fe0032 c0014f84 70616d6f b6fe0032 00000081 60070010
ff60: c521ff84 c521ff70 c008e1f4 c00bf328 0001a004 70616d6f c521ff94 0021ff88
ff80: c008e368 0001a004 70616d6f b6fe0032 00000081 c0015028 00000000 c521ffa8
ffa0: c0014dc0 c009bcd0 0001a004 70616d6f bec2ab38 00000880 bec2ab38 00000880
ffc0: 0001a004 70616d6f b6fe0032 00000081 00000319 00000000 b6fe1000 00000000
ffe0: bec2ab30 bec2ab20 00019f00 b6f539c0 60070010 bec2ab38 aaaaaaaa aaaaaaaa
Backtrace:
[<c01122cc>] (cache_free_debugcheck+0x0/0x36c) from [<c0112efc>] (kfree+0xc8/0x2ac)
[<c0112e34>] (kfree+0x0/0x2ac) from [<bf0001fc>] (omap_nand_remove+0x5c/0x64 [omap2])
[<bf0001a0>] (omap_nand_remove+0x0/0x64 [omap2]) from [<c02ca11c>] (platform_drv_remove+0x28/0x2c)
 r5:bf001ca8 r4:c0673778
[<c02ca0f4>] (platform_drv_remove+0x0/0x2c) from [<c02c82c4>] (__device_release_driver+0x80/0xdc)
[<c02c8244>] (__device_release_driver+0x0/0xdc) from [<c02c8dd8>] (driver_detach+0xc4/0xc8)
 r5:bf001ca8 r4:c0673778
[<c02c8d14>] (driver_detach+0x0/0xc8) from [<c02c804c>] (bus_remove_driver+0x9c/0x104)
 r6:c0804ee0 r5:bf001ca8 r4:bf001ca8 r3:00000000
[<c02c7fb0>] (bus_remove_driver+0x0/0x104) from [<c02c950c>] (driver_unregister+0x60/0x80)
 r6:c521e000 r5:bf001ca8 r4:00000000 r3:bf001924
[<c02c94ac>] (driver_unregister+0x0/0x80) from [<c02ca3a4>] (platform_driver_unregister+0x1c/0x20)
 r5:00000000 r4:bf001d48
[<c02ca388>] (platform_driver_unregister+0x0/0x20) from [<bf001938>] (omap_nand_driver_exit+0x14/0x1c [omap2])
[<bf001924>] (omap_nand_driver_exit+0x0/0x1c [omap2]) from [<c009beb4>] (sys_delete_module+0x1f0/0x2ec)
[<c009bcc4>] (sys_delete_module+0x0/0x2ec) from [<c0014dc0>] (ret_fast_syscall+0x0/0x48)
 r8:c0015028 r7:00000081 r6:b6fe0032 r5:70616d6f r4:0001a004
Code: e1a00005 eb0d9172 e7f001f2 e7f001f2 (e7f001f2)
---[ end trace 6a30b24d8c0cc2ee ]---
Segmentation fault
--->8---

This error was introduced in 67ce04bf27 which
was the first commit of this driver.

Signed-off-by: Andreas Bießmann <andreas@biessmann.de>
Cc: stable@vger.kernel.org
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:29:18 +01:00
Stefan Roese
7be1f6b9a1 mtd: cfi_cmdset_0001: Fix problem with unlocking timeout
Unlocking may take up to 1.4 seconds on some Intel flashes. So
lets use a max. of 1.5 seconds (1500ms) as timeout.

See "Clear Block Lock-Bits Time" on page 40 in
"3 Volt Intel StrataFlash Memory" 28F128J3,28F640J3,28F320J3 manual
from February 2003

This patch also fixes some other problems with this timeout:

- Don't use HZ in timeout "calculation"!
  While testing we noticed that an unlocking timeout occured with
  HZ=1000 and didn't occur with HZ=300. This was because the
  timeout parameter was calculated differently depending on the
  HZ value. Now a fixed value of 1500ms is used.

- The last parameter of WAIT_TIMEOUT (defined to
  inval_cache_and_wait_for_operation) has to be passed in
  micro-seconds. So multiply the ms value with 1000 and not 100
  to calculate this value.

- Use variable name "mdelay" instead of misleading "udelay".

Signed-off-by: Stefan Roese <sr@denx.de>
Tested-by: Stephan Gatzka <stephan@gatzka.org>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:29:08 +01:00
Jeff Westfahl
a5ff4f1029 mtd: nand: Added a device flag for subpage read support
Added a NAND device flag for subpage read support. Previously this was
hard coded based on large page and soft ECC.
Updated base NAND driver to use the new subpage read flag if the NAND is
large page and soft ECC.

Signed-off-by: Jeff Westfahl <jeff.westfahl@ni.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>
2012-09-29 15:28:33 +01:00
Thomas Petazzoni
32098f6af0 mtd: orion_nand: remove <mach/hardware.h> include
Commit abcda1dc ('arm: plat-orion: introduce PLAT_ORION_LEGACY hidden
config option') currently pending in linux-next will make the ARCH_MVEBU
platform select PLAT_ORION, which means that now all Orion drivers can
be enabled on ARCH_MVEBU. This works fine for most drivers, except for
orion_nand, because it includes <mach/hardware.h>, but mach-mvebu does
not have a mach/hardware.h header (it is considered as a deprecated
practice).

It turns out that the <mach/hardware.h> include in orion_nand is not
necessary: the driver builds perfectly fine without it, so we simply
get rid of it.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Tested-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:13:18 +01:00
Akinobu Mita
f45c2990dc mtd: mtd_nandecctest: make module_init() return an error code if test fails
Return an error code if test fails in order to detect a test case failure
by invoking tests repeatedly like this:

while sudo modprobe mtd_nandecctest; do
	sudo modprobe -r mtd_nandecctest
done

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:13:08 +01:00
Akinobu Mita
0ce0060f10 mtd: mtd_nandecctest: remove unnecessary srandom32() call
It is unnecessary for this driver to call srandom32() in module_init.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:13:05 +01:00
Gabor Juhos
58d864ed20 mtd: m25p80: add support for the EON EN25Q64 chip
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:12:56 +01:00
Jan Luebbe
3105875f6b mtd: m25p80: add support for Micron N25Q128
Signed-off-by: Jan Luebbe <jlu@pengutronix.de>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:12:53 +01:00
Roland Stigge
62beee20b1 mtd: lpc32xx_mlc: Cleanup after DT-only conversion
The LPC32xx's DT-only conversion of the MLC NAND driver makes NAND config via
platform_data obsolete. Dropped by this patch.

Further, the driver really needs CONFIG_OF, which is already reflected by the
dependency on ARCH_LPC32XX which depends on CONFIG_OF. So also dropping
CONFIG_OF ifdefs.

There is still platform_data necessary to supply the dma_filter callback for
the dma engine. This is a completely different data structure than the old
platform_data for NAND config, so renaming some old "pdata" variable to "ncfg"
to prevent confusion with the new platform data.

Signed-off-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:12:49 +01:00
Roland Stigge
10594f6787 mtd: lpc32xx_slc: Cleanup after DT-only conversion
The LPC32xx's DT-only conversion of the SLC NAND driver makes NAND config via
platform_data obsolete. Dropped by this patch.

Further, the driver really needs CONFIG_OF, which is already reflected by the
dependency on ARCH_LPC32XX which depends on CONFIG_OF. So also dropping
CONFIG_OF ifdefs.

There is still platform_data necessary to supply the dma_filter callback for
the dma engine. This is a completely different data structure than the old
platform_data for NAND config, so renaming some old "pdata" variable to "ncfg"
to prevent confusion with the new platform data.

Signed-off-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:12:48 +01:00
Fabio Estevam
e1f5b3f6a8 mtd: allow MTD_NAND_GPMI_NAND to be built as module
Allow MTD_NAND_GPMI_NAND to be built as module.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:12:34 +01:00
Fabio Estevam
d159c4e5fb mtd: nand: nand_bbt: export nand_update_bbt
When building MTD_NAND_GPMI_NAND as module, the following error shows up:

ERROR: "nand_update_bbt" [drivers/mtd/nand/gpmi-nand/gpmi_nand.ko] undefined!

Export nand_update_bbt to fix it.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:11:27 +01:00
Shmulik Ladkani
eceb84b188 mtd: nand: rename create_bbt()'s 'len' variable to 'numpages'
Rename 'len' variable of create_bbt/scan_block_fast/scan_block_full to
'numpages', since it really means number of pages to scan when
searching for the BBM (and not the byte length of the scan).

Signed-off-by: Shmulik Ladkani <shmulik.ladkani@gmail.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>
2012-09-29 15:10:37 +01:00
Sachin Kamat
19da4158d3 mtd: s3c2410: Fix compiler warnings
Fixes the following warnings:
‘s3c2410_nand_correct_data’ defined but not used [-Wunused-function]
‘s3c2410_nand_enable_hwecc’ defined but not used [-Wunused-function]
‘s3c2412_nand_enable_hwecc’ defined but not used [-Wunused-function]
‘s3c2440_nand_enable_hwecc’ defined but not used [-Wunused-function]
‘s3c2410_nand_calculate_ecc’ defined but not used [-Wunused-function]
‘s3c2412_nand_calculate_ecc’ defined but not used [-Wunused-function]
‘s3c2440_nand_calculate_ecc’ defined but not used [-Wunused-function]

The above functions are called only when CONFIG_MTD_NAND_S3C2410_HWECC
is defined. Thus making them conditional.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:10:04 +01:00
Sachin Kamat
6f32a3e285 mtd: s3c2410: Use devm_* functions
devm_* functions are device managed functions and make cleanup code
simpler and smaller.
devm_kzalloc, devm_clk_get and devm_request_and_ioremap functions
are used.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:07:21 +01:00
Julia Lawall
c83d29f008 mtd: maps: rbtx4939-flash: delete unneeded test
Err has only been initialized to 0 at this, so it is not possible that this
test can be true.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:06:26 +01:00
Huang Shijie
c51803ddba mtd: mtdpart: break it as soon as we parse out the partitions
We may cause a memory leak when the @types has more then one parser.

Take the `default_mtd_part_types` for example. The default_mtd_part_types has
two parsers now: `cmdlinepart` and `ofpart`.

Assume the following case:
The kernel command line sets the partitions like:
	#gpmi-nand:20m(boot),20m(kernel),1g(rootfs),-(user)
But the devicetree file(such as arch/arm/boot/dts/imx28-evk.dts) also sets
the same partitions as the kernel command line does.

In the current code, the partitions parsed out by the `ofpart` will
overwrite the @pparts which has already set by the `cmdlinepart` parser,
and the the partitions parsed out by the `cmdlinepart` is missed.
A memory leak occurs.

So we should break the code as soon as we parse out the partitions,
In actually, this patch makes a priority order between the parsers.
If one parser has already parsed out the partitions successfully,
it's no need to use another parser anymore.

Signed-off-by: Huang Shijie <shijie8@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:06:13 +01:00
Stefan Roese
d0788ce492 mtd: physmap_of: Add "no-unaligned-direct-access" DT property
On some platforms (e.g. MPC5200) a direct 1:1 mapping may cause
problems with JFFS2 usage, as the local bus (LPB) doesn't support
unaligned accesses as implemented in the JFFS2 code via memcpy().
By defining "no-unaligned-direct-access", the flash will not be
exposed directly to the MTD users (e.g. JFFS2) any more.

Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:05:55 +01:00
Julia Lawall
e1ed147fd4 mtd: spear_smi: use devm_ functions consistently
Use devm_kzalloc for all calls to kzalloc and not just the first.  Use devm
functions for other allocations as well.

Move the call to platform_get_resource(pdev, IORESOURCE_MEM, 0) closer to
where its result is passed to devm_request_and_ioremap to make the lack of
need for a NULL test more evident.

The semantic match that finds the inconsistency is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
@@

*devm_kzalloc(...)
...
*kzalloc(...)
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:05:32 +01:00
John Crispin
99f2b10792 mtd: lantiq: Add NAND support on Lantiq XWAY SoC.
The driver uses plat_nand. As the platform_device is loaded from DT, we need
to lookup the node and attach our xway specific "struct platform_nand_data"
to it.

Signed-off-by: John Crispin <blogic@openwrt.org>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:05:18 +01:00
John Crispin
da3888cb84 mtd: check for valid pdata inside plat_nand
If plat_nand loads and the platform_data is not properly set it will segfault.

Signed-off-by: John Crispin <blogic@openwrt.org>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:01:52 +01:00
Huang Shijie
657f28f881 mtd: kill MTD_NAND_VERIFY_WRITE
Just as Artem suggested:

"Both UBI and JFFS2 are able to read verify what they wrote already.
There are also MTD tests which do this verification. So I think there
is no reason to keep this in the NAND layer, let alone wasting RAM in
the driver to support this feature. Besides, it does not work for sub-pages
and many drivers have it broken. It hurts more than it provides benefits."

So kill MTD_NAND_VERIFY_WRITE entirely.

Signed-off-by: Huang Shijie <shijie8@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:00:46 +01:00
Vivien Didelot
8da28681eb mtd: m25p80: add support for Micron N25Q256A
The manufacturer datasheet can be found on the Micron website,
under the name n25q_256mb_3v_65nm.pdf:

http://www.micron.com/search?source=ps&q=n25q_256mb_3v_65nm

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:00:28 +01:00
Wolfram Sang
db68f28896 mtd: maps: pci: remove dead code
Removes disabled printk (which should be dev_dbg these days) as well
as #if 0 blocks (which are trivial to reimplement if ever needed) to
meet basic CodingStyle guidelines.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 15:00:21 +01:00
Andy Shevchenko
13e859745c mtd: use %*ph[CN] to dump small buffers
There is new format specified that helps to dump small buffers. It makes the
code simpler and nicer.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Jiandong Zheng <jdzheng@broadcom.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 14:59:28 +01:00
Huang Shijie
513d57e1db mtd: gpmi: fix the compiler warnings
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>
2012-09-29 14:59:12 +01:00
Heiko Schocher
cdeadd712f mtd: nand: davinci: add OF support for davinci nand controller
add OF support for the davinci nand controller.

Signed-off-by: Heiko Schocher <hs@denx.de>
Acked-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 14:59:04 +01:00
Greg Ungerer
b05a1187bb mtd: allow uclinux map driver to be used on any ColdFire CPU platform
The uclinux.c map driver has traditionally been used only on non-MMU based
systems. But there is no fundamental reason it can't be used on systems
running with virtual memory.

Some ColdFire CPU based systems now have full paged MMU hardware and can use
the uclinux.c mapping driver, so making the uclinux.c driver configuration
depend on !CONFIG_MMU doesn't make sense now. Allow the CONFIG_MTD_UCLINUX
option to be enabled if CONFIG_COLDFIRE is enabled. (I have chosen not to
just more generally allow uclinux.c for any MMU type to keep this option
hidden for most systems that are not interested in setting it).

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 14:58:37 +01:00
Greg Ungerer
08a3c4bc23 mtd: fix wrong usage of ioremap_nocache() in uclinux.c map driver
The uclinux.c mapping driver uses ioremap_nocache() to map its physical
mapping address to a system virtual address. Problem is that the region
it is mapping is not device memory. It is ordinary system RAM. On most
non-MMU systems this doesn't matter, and the mapping is always a 1:1
translation of the address. On paged memory systems on some architectures
the page table mappings are not compatible between normal RAM and device
memory.

If we want to use the uclinux.c mapping driver on real MMU enabled systems
we should be using the kernel virtual address that the mapping is at. For
architectures that support the traditional initrd they use phys_to_virt or
__va to convert the physical start initrd address to a kernel usable virtual
address. The uclinux filesystem mapping is even more restrictive than the
typical initrd, it always follows the kernels own bss section (so always in
directly mapped memory). Therefore we can use the usual phys_to_virt to
translate the physical start address to a virtual address.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 14:58:05 +01:00
Sachin Kamat
f938bc563b mtd: s3c2410: Fix line over 80 characters warning
Fixes the following checkpatch warnings:
WARNING: line over 80 characters

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 14:57:00 +01:00
Sachin Kamat
54cd0208c6 mtd: s3c2410: Fix checkpatch warnings and errors related to whitespaces
Fixes checkpatch warnings and errors related to whitespaces.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 14:56:48 +01:00
Sachin Kamat
a68c5ec856 mtd: s3c2410: Do not initialise statics to 0 or NULL
Fixes the following checkpatch errors:
ERROR: do not initialise statics to 0 or NULL
+static int hardware_ecc = 0;

ERROR: do not initialise statics to 0 or NULL
+static const int clock_stop = 0;

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 14:56:12 +01:00
Sachin Kamat
d2a89be8e7 mtd: s3c2410: Use <linux/io.h> instead of <asm/io.h>
Fixes the following checkpatch warning:
WARNING: Use #include <linux/io.h> instead of <asm/io.h>

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 14:56:07 +01:00
Sachin Kamat
92aeb5d20c mtd: s3c2410: Use pr_* instead of printk
Use pr_* instead of printk.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 14:56:03 +01:00
Sachin Kamat
056fcab51c mtd: s3c2410: Use module_platform_driver()
This makes the code simpler by eliminating module_init() and
module_exit().

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 14:56:01 +01:00
Fabio Estevam
27c84fa584 mtd: nand: Include IMX6 in the list of supported SoCs
Include IMX6 in the list of supported SoCs.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 14:55:56 +01:00
Alexander Shiyan
ce55754c4f mtd: autcpu12-nvram: Convert driver to platform_device
Because we can have a single kernel to support multiple machines, we
need to make loading specific drivers for the target platform only.
For this, driver is converted to the platform driver.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 14:55:19 +01:00
Alexander Shiyan
d1f55c680e mtd: autcpu12-nvram: Fix compile breakage
Update driver autcpu12-nvram.c so it compiles; map_read32/map_write32
no longer exist in the kernel so the driver is totally broken.
Additionally, map_info name passed to simple_map_init is incorrect.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Cc: stable@vger.kernel.org
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 14:54:55 +01:00
Peter Meerwald
4cacbe226f mtd: omap2: fix some typos in comments
Signed-off-by: Peter Meerwald <p.meerwald@bct-electronic.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 14:54:20 +01:00
Brian Norris
bf7a01bf79 mtd: nand: allow NAND_NO_SUBPAGE_WRITE to be set from driver
The NAND_CHIPOPTIONS_MSK has limited utility and is causing real bugs. It
silently masks off at least one flag that might be set by the driver
(NAND_NO_SUBPAGE_WRITE). This breaks the GPMI NAND driver and possibly
others.

Really, as long as driver writers exercise a small amount of care with
NAND_* options, this mask is not necessary at all; it was only here to
prevent certain options from accidentally being set by the driver. But the
original thought turns out to be a bad idea occasionally. Thus, kill it.

Note, this patch fixes some major gpmi-nand breakage.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Tested-by: Huang Shijie <shijie8@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 14:54:09 +01:00
Jean-Christophe PLAGNIOL-VILLARD
28446acb1f mtd: atmel nand: fix gpio missing request
without this the gpio will not be muxed as a gpio by the current custom pinmux
or later by the pinctrl

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 14:53:58 +01:00
Mike Dunn
aa6d01fa43 mtd: docg4: fix oob reads
This patch does two closely related things:

(1) Currently the ecc.read_page() method does not fill the nand->oob_poi buffer
with the oob data, but instead reads oob into a local buffer.  Fix this by
filling the oob_poi buffer instead of a local buffer.  The 'oob_required'
argument is quietly ignored; the device must always read oob after the page
data, and it is presumed that there's no harm in filling oob_poi, even when not
explicitly requested.

(2) Always read oob from the device in ecc.read_oob(), instead of copying it
from a local buffer under some circumstances.

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>
2012-09-29 14:53:46 +01:00
Artem Bityutskiy
036a1ac1f4 mtd: spear_smi: fix compilation warning
drivers/mtd/devices/spear_smi.c: In function 'spear_smi_probe':
drivers/mtd/devices/spear_smi.c:984:2: warning: comparison of unsigned expression < 0 is always false [-Wtype-limits]

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 14:53:30 +01:00
Julia Lawall
b5170978b4 mtd: spear_smi: failure test for null rather than negative integer
dev_get_platdata returns a pointer, so the failure value would be NULL
rather than a negative integer.

The semantic match that finds this problem is: (http://coccinelle.lip6.fr/)

// <smpl>
@@
expression x,e;
statement S1,S2;
@@

*x = dev_get_platdata(...)
... when != x = e
*if (x < 0) S1 else S2
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Acked-by: Stefan Roese <sr@denx.de>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 14:53:21 +01:00
Roland Stigge
9c6f62a7ef mtd: lpc32xx_mlc: Make driver independent of AMBA DMA engine driver
This patch makes the MLC NAND driver independent of the single AMBA DMA engine
driver by using the platform data provided dma_filter callback.

Signed-off-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 14:53:08 +01:00
Roland Stigge
de20c22d2b mtd: lpc32xx_slc: Make driver independent of AMBA DMA engine driver
This patch makes the SLC NAND driver independent of the single AMBA DMA engine
driver by using the platform data provided dma_filter callback.

Signed-off-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 14:52:45 +01:00
Brian Norris
af69dcd386 mtd: nand: rename '_raw' BBT scan functions
None of these scanning functions use MTD_OPS_RAW mode any more, so there's
really nothing 'raw' about them. Rename them to (hopefully) make the code
a little clearer.

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>
2012-09-29 14:52:04 +01:00
Brian Norris
a7e68834fc mtd: nand: use ECC, if present, when scanning OOB
scan_read_raw_oob() is used in only in places where the MTD_OPS_PLACE_OOB mode
is preferable to MTD_OPS_RAW mode, so use MTD_OPS_PLACE_OOB instead.
MTD_OPS_PLACE_OOB provides the same functionality with the potential[1] added
bonus of error correction.

This brings scan_block_full() in line with scan_block_fast() so that they
both read bad block markers with MTD_OPS_PLACE_OOB. This can help in
preventing 0xff markers (in good blocks) from being interpreted as bad
block indicators in the presence of a single bitflip.

Note that ECC error codes (EUCLEAN or EBADMSG) are already silently
ignored in all users of scan_read_raw_oob().

[1] Few  drivers perform proper error correction on OOB data. In those
    cases, the use of MTD_OPS_RAW vs. MTD_OPS_PLACE_OOB is not
    significant.

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>
2012-09-29 14:51:55 +01:00
Brian Norris
491ed06f33 mtd: nand_bbt: use string library
Some nand_bbt code can be shortened by using memcmp() and memchr_inv().
As an added bonus, there is a possible performance benefit.

Borrowed some code from Akinobu Mita.

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>
2012-09-29 14:51:13 +01:00
Brian Norris
7b5a2d4097 mtd: nand: remove unused 'int' return codes
The return codes for read_abs_bbts() and search_read_bbts() are always
non-zero, and so don't have much meaning. Just remove them.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Reviewed-by: Shmulik Ladkani <shmulik.ladkani@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 14:51:00 +01:00
Brian Norris
e47f68587b mtd: check for max_bitflips in mtd_read_oob()
mtd_read_oob() has some unexpected similarities to mtd_read(). For
instance, when ops->datbuf != NULL, nand_base.c might return max_bitflips;
however, when ops->datbuf == NULL, nand_base's code potentially could
return -EUCLEAN (no in-tree drivers do this yet). In any case where the
driver might return max_bitflips, we should translate this into an
appropriate return code using the bitflip_threshold.

Essentially, mtd_read_oob() duplicates the logic from mtd_read().

This prevents users of mtd_read_oob() from receiving a positive return
value (i.e., from max_bitflips) and interpreting it as an unknown error.

Artem: amend comments.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Reviewed-by: Mike Dunn <mikedunn@newsguy.com>
Reviewed-by: Shmulik Ladkani <shmulik.ladkani@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 14:50:50 +01:00
Marek Vasut
8bb8b85f67 mtd: m25p80: Fix the Spansion chip detection
Due to the implementation of the following loop at the end
of jedec_probe():

776         for (tmp = 0; tmp < ARRAY_SIZE(m25p_ids) - 1; tmp++) {
777                 info = (void *)m25p_ids[tmp].driver_data;
778                 if (info->jedec_id == jedec) {
779                         if (info->ext_id != 0 && info->ext_id != ext_jedec)
780                                 continue;
781                         return &m25p_ids[tmp];
782                 }
783         }

In particular line 779 in the above numbering, the chips with ext_id != 0 must
be ordered first in the list of chips (m25p_ids[]).

Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 14:50:22 +01:00
Marek Vasut
f728598f8d mtd: m25p80: add support for Spansion s25sl064p chip
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 14:50:09 +01:00
Huang Shijie
ff506172a3 mtd: gpmi: change the code for clocks
The gpmi nand driver may needs several clocks(MX6Q needs five clocks).

In the old clock framework, all these clocks are chained together,
all you need is to manipulate the first clock.

But the kernel uses the common clk framework now, which forces us to
get the clocks one by one. When we use them, we have to enable them
one by one too.

Signed-off-by: Huang Shijie <shijie8@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 14:50:02 +01:00
Bastian Hecht
894824f973 mtd: sh_flctl: Only copy OOB data if it is required
Check the new oob_required flag and only copy the OOB data to the internal
buffer if needed.

Signed-off-by: Bastian Hecht <hechtb@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 14:49:38 +01:00
Bastian Hecht
d76236f30f mtd: sh_flctl: Use memcpy() instead of using a loop
Elements have been copied "manually" in a loop. Better use memcpy().

Signed-off-by: Bastian Hecht <hechtb@gmail.com>
Reviewed-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29 14:48:58 +01:00
Linus Torvalds
9c603e53d3 mtdchar: fix offset overflow detection
Sasha Levin has been running trinity in a KVM tools guest, and was able
to trigger the BUG_ON() at arch/x86/mm/pat.c:279 (verifying the range of
the memory type).  The call trace showed that it was mtdchar_mmap() that
created an invalid remap_pfn_range().

The problem is that mtdchar_mmap() does various really odd and subtle
things with the vma page offset etc, and uses the wrong types (and the
wrong overflow) detection for it.

For example, the page offset may well be 32-bit on a 32-bit
architecture, but after shifting it up by PAGE_SHIFT, we need to use a
potentially 64-bit resource_size_t to correctly hold the full value.

Also, we need to check that the vma length plus offset doesn't overflow
before we check that it is smaller than the length of the mtdmap region.

This fixes things up and tries to make the code a bit easier to read.

Reported-and-tested-by: Sasha Levin <levinsasha928@gmail.com>
Acked-by: Suresh Siddha <suresh.b.siddha@intel.com>
Acked-by: Artem Bityutskiy <dedekind1@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: linux-mtd@lists.infradead.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-09-28 12:13:46 -07:00
Prabhakar Kushwaha
10bfa766ef driver/mtd:IFC NAND:Initialise internal SRAM before any write
IFC-1.1.0 uses 28nm techenology for SRAM. This tech has known limitaion for
SRAM i.e. "byte select" is not supported. Hence Read Modify Write is
implemented in IFC for any "system side write" into sram buffer. Reading an
uninitialized memory results in ECC Error from sram wrapper.

Hence we must initialize/prefill SRAM buffer by any data before writing
anything in SRAM from system side. To initialize SRAM user can use "READID"
NAND command with read bytes equal to SRAM size. It will be a one time
activity post boot.

Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Acked-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2012-09-27 07:32:25 -05:00
Brian Norris
55393ba1bd UBI: fix trivial typo 'it' => 'is'
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-09-26 13:22:50 +03:00
Jiang Lu
cf38aca520 UBI: load after mtd device drivers
Use 'late_initcall()' in UBI to make sure it initializes after MTD drivers.

Signed-off-by: Jiang Lu <lu.jiang@windriver.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-09-26 13:22:44 +03:00
Olof Johansson
e3a66aa33a Merge branch 'multiplatform/platform-data' into next/multiplatform
* multiplatform/platform-data:
  ARM: spear: move platform_data definitions
  ARM: samsung: move platform_data definitions
  ARM: orion: move platform_data definitions
  ARM: nomadik: move platform_data definitions
  ARM: w90x900: move platform_data definitions
  ARM: vt8500: move platform_data definitions
  ARM: tegra: move sdhci platform_data definition
  ARM: sa1100: move platform_data definitions
  ARM: pxa: move platform_data definitions
  ARM: netx: move platform_data definitions
  ARM: msm: move platform_data definitions
  ARM: imx: move platform_data definitions
  ARM: ep93xx: move platform_data definitions
  ARM: davinci: move platform_data definitions
  ARM: at91: move platform_data definitions

Conflicts due to removed files:
	arch/arm/mach-tegra/board-harmony.c
	arch/arm/mach-tegra/board-trimslice.c

Conflicts due to code removal:
	arch/arm/mach-tegra/board-paz00.c

Context conflicts in:
	drivers/mmc/host/sdhci-tegra.c
	drivers/net/irda/pxaficp_ir.c

Signed-off-by: Olof Johansson <olof@lixom.net>
2012-09-22 01:07:21 -07:00
Olof Johansson
ea832c41da Merge branch 'next/dt' into next/multiplatform
* next/dt: (182 commits)
  ARM: tegra: Add Avionic Design Tamonten Evaluation Carrier support
  ARM: tegra: Add Avionic Design Medcom-Wide support
  ARM: tegra: Add Avionic Design Plutux support
  ARM: tegra: Add Avionic Design Tamonten support
  ARM: tegra: dts: Add pwm label
  ARM: dt: tegra: whistler: configure power off
  ARM: mxs: m28evk: Disable OCOTP OUI loading
  ARM: imx6q: use pll2_pfd2_396m as the enfc_sel's parent
  ARM: dts: imx6q-sabrelite: add usbotg pinctrl support
  ARM: dts: imx23-olinuxino: Add USB host support
  ARM: dts: imx6q-sabrelite: add usbmisc device
  ARM: dts: mx23: Add USB resources
  ARM: dts: mxs: Add ethernetX to macX aliases
  ARM: msm: Remove non-DT targets from 8960
  ARM: msm: Add DT support for 8960
  ARM: msm: Move io mapping prototypes to common.h
  ARM: msm: Rename board-msm8x60 to signify its DT only status
  ARM: msm: Make 8660 a DT only target
  ARM: msm: Move 8660 to DT timer
  ARM: msm: Add DT support to msm_timer
  ...
2012-09-20 21:16:43 -07:00
Tony Lindgren
e27e35ec73 ARM: OMAP1: Move board-ams-delta.h from plat to mach
This is only used by omap1.

And to fix things properly, this should not be included
from the drivers at all.

Acked-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: linux-fbdev@vger.kernel.org
Cc: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com>
Cc: linux-mtd@lists.infradead.org
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: linux-input@vger.kernel.org
Cc: Peter Ujfalusi <peter.ujfalusi@ti.com>
Cc: Liam Girdwood <lrg@ti.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: alsa-devel@alsa-project.org
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-09-20 15:02:19 -07:00
Olof Johansson
2843c7d2c0 Device tree related changes for omaps.
Note that this branch is based on omap-cleanup-sparseirq-for-v3.7
 to avoid merge conflicts with the sparseirq changes for gpio-twl4030
 driver.
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Merge tag 'omap-devel-dt-merged-for-v3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/dt

Device tree related changes for omaps.

Note that this branch is based on omap-cleanup-sparseirq-for-v3.7
to avoid merge conflicts with the sparseirq changes for gpio-twl4030
driver.

* tag 'omap-devel-dt-merged-for-v3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  arm/dts: Mux uart pins for omap4-sdp
  ARM: OMAP2+: select PINCTRL in Kconfig
  arm/dts: Add pinctrl driver entries for omap2/3/4
  arm/dts: Add omap36xx.dtsi file and rename omap3-beagle to omap3-beagle-xm
  ARM: dts: omap3-overo: Add support for the blue LED
  Documentation: dt: Update the OMAP documentation with Overo/Toby
  ARM: dts: OMAP3: Add support for Gumstix Overo with Tobi expansion board
  ARM: dts: OMAP4: Add reg and interrupts for every nodes
  ARM: dts: AM33XX: Specify reg and interrupt property for all nodes
  ARM: dts: AM33XX: Convert all hex numbers to lower-case
  ARM: dts: omap3-beagle: Enable audio support
  ARM: dts: omap5: Add McPDM and DMIC section to the dtsi file
  ARM: dts: omap5: Add McBSP entries
  ARM: dts: omap4: Add reg-names for McPDM and DMIC
  ARM: dts: omap4: Add McBSP entries
  ARM: dts: omap3: Add McBSP entries
  ARM: dts: omap2420-h4: Include omap2420.dtsi file instead the common omap2
  ARM: dts: omap2: Add McBSP entries for OMAP2420 and OMAP2430 SoC
  ARM: dts: omap3-beagle: Add heartbeat and mmc LEDs support
  ARM: dts: omap3: Add gpio-twl4030 properties for BeagleBoard and omap3-EVM
  ...
2012-09-20 13:22:20 -07:00
Arnd Bergmann
436d42c61c ARM: samsung: move platform_data definitions
Platform data for device drivers should be defined in
include/linux/platform_data/*.h, not in the architecture
and platform specific directories.

This moves such data out of the samsung include directories

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Jeff Garzik <jgarzik@pobox.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: "Wolfram Sang (embedded platforms)" <w.sang@pengutronix.de>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Bryan Wu <bryan.wu@canonical.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Sylwester Nawrocki <s.nawrocki@samsung.com>
Cc: Chris Ball <cjb@laptop.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Sangbeom Kim <sbkim73@samsung.com>
Cc: Liam Girdwood <lrg@ti.com>
Cc: linux-samsung-soc@vger.kernel.org
2012-09-19 17:42:18 +02:00
Arnd Bergmann
c02cecb92e ARM: orion: move platform_data definitions
Platform data for device drivers should be defined in
include/linux/platform_data/*.h, not in the architecture
and platform specific directories.

This moves such data out of the orion include directories

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Vinod Koul <vinod.koul@intel.com>
Cc: Dan Williams <djbw@fb.com>
Cc: Bryan Wu <bryan.wu@canonical.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Chris Ball <cjb@laptop.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Liam Girdwood <lrg@ti.com>
Cc: Jaroslav Kysela <perex@perex.cz>
Cc: Takashi Iwai <tiwai@suse.de>
2012-09-19 17:42:17 +02:00
Arnd Bergmann
2203747c97 ARM: omap: move platform_data definitions
Platform data for device drivers should be defined in
include/linux/platform_data/*.h, not in the architecture
and platform specific directories.

This moves such data out of the omap include directories

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Tony Lindgren <tony@atomide.com>
Cc: Kevin Hilman <khilman@ti.com>
Cc: "Benoît Cousson" <b-cousson@ti.com>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Ohad Ben-Cohen <ohad@wizery.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Omar Ramirez Luna <omar.ramirez@ti.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: Peter Ujfalusi <peter.ujfalusi@ti.com>
Cc: Jarkko Nikula <jarkko.nikula@bitmer.com>
Cc: Liam Girdwood <lrg@ti.com>
Cc: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Cc: Jean Pihet <j-pihet@ti.com>
Cc: J Keerthy <j-keerthy@ti.com>
Cc: linux-omap@vger.kernel.org
2012-09-19 17:39:52 +02:00
Olof Johansson
8e51036d34 This branch contains changes needed to make omap2+
work properly with sparse IRQ. It also removes
 dependencies to mach/hardware.h. These help moving
 things towards ARM single zImage support.
 
 This branch is based on a commit in tty-next
 branch with omap-devel-gpmc-fixed-for-v3.7 and
 cleanup-omap-tags-for-v3.7 merged in to keep things
 compiling and sort out some merge conflicts.
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Merge tag 'omap-cleanup-sparseirq-for-v3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/cleanup

From Tony Lindgren:

This branch contains changes needed to make omap2+
work properly with sparse IRQ. It also removes
dependencies to mach/hardware.h. These help moving
things towards ARM single zImage support.

This branch is based on a commit in tty-next
branch with omap-devel-gpmc-fixed-for-v3.7 and
cleanup-omap-tags-for-v3.7 merged in to keep things
compiling and sort out some merge conflicts.

* tag 'omap-cleanup-sparseirq-for-v3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP1: Move SoC specific headers from plat to mach for omap1
  ARM: OMAP2+ Move SoC specific headers to be local to mach-omap2
  ARM: OMAP: Split plat/hardware.h, use local soc.h for omap2+
  ARM: OMAP: Remove unused old gpio-switch.h
  ARM: OMAP1: Move plat/irqs.h to mach/irqs.h
  ARM: OMAP2+: Remove hardcoded IRQs and enable SPARSE_IRQ
  ARM: OMAP2+: Prepare for irqs.h removal
  W1: OMAP HDQ1W: Remove dependencies to mach/hardware.h
  Input: omap-keypad: Remove dependencies to mach includes
  ARM: OMAP: Move gpio.h to include/linux/platform_data
  ARM: OMAP2+: Remove hardcoded twl4030 gpio_base, irq_base and irq_end
  ARM: OMAP2+: Remove unused nand_irq for GPMC
  ARM: OMAP2+: Make INTCPS_NR_IRQS local for mach-omap2/irq.c
  ARM: OMAP1: Define OMAP1_INT_I2C locally
  ARM: OMAP1: Move define of OMAP_LCD_DMA to dma.h
2012-09-16 20:05:06 -07:00
Olof Johansson
e640ca0fcb Remove the ancient omap specific atags that are no longer needed.
At some point we were planning to pass the bootloader information
 with custom atags that did not work out too well.
 
 There's no need for these any longer as the kernel has been booting
 fine without them for quite some time. And Now we have device tree
 support that can be used instead.
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Merge tag 'cleanup-omap-tags-for-v3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/cleanup

From Tony Lindgren:

Remove the ancient omap specific atags that are no longer needed.

At some point we were planning to pass the bootloader information
with custom atags that did not work out too well.

There's no need for these any longer as the kernel has been booting
fine without them for quite some time. And Now we have device tree
support that can be used instead.

* tag 'cleanup-omap-tags-for-v3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP: remove plat/board.h file
  ARM: OMAP: move debug_card_init() function
  ARM: OMAP1: move lcd pdata out of arch/arm/*
  ARM: OMAP1: move omap1_bl pdata out of arch/arm/*
  ARM: OMAP: remove the omap custom tags
  ARM: OMAP1: remove the crystal type tag parsing
  ARM: OMAP: remove the sti console workaround
  ARM: OMAP: omap3evm: cleanup revision bits
  ARM: OMAP: cleanup struct omap_board_config_kernel
  + sync to 3.6-rc5
2012-09-16 19:28:42 -07:00
Olof Johansson
5ec8d8c96e Changes for GPMC (General Purpose Memory Controller) that take it
closer for being just a regular device driver.
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Merge tag 'omap-devel-gpmc-fixed-for-v3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/cleanup

From Tony Lindgren:

Changes for GPMC (General Purpose Memory Controller) that take it
closer for being just a regular device driver.

* tag 'omap-devel-gpmc-fixed-for-v3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  mtd: nand: omap2: use gpmc provided irqs
  ARM: OMAP2+: gpmc-nand: Modify Interrupt handling
  ARM: OMAP2+: gpmc: Modify interrupt handling
  mtd: onenand: omap2: obtain memory from resource
  mtd: nand: omap2: obtain memory from resource
  ARM: OMAP2+: gpmc-onenand: provide memory as resource
  ARM: OMAP2+: gpmc-nand: update resource with memory
  mtd: nand: omap2: handle nand on gpmc
  ARM: OMAP2+: gpmc-nand: update gpmc-nand regs
  ARM: OMAP2+: gpmc: update nand register helper
2012-09-16 19:27:20 -07:00
Olof Johansson
2e6185f1fe ARM: tegra: i2c driver enhancements mostly related to clocking
This branch contains a number of fixes and cleanups to the Tegra I2C
 driver related to clocks. These are based on the common clock conversion
 in order to avoid duplicating the clock driver changes before and after
 the conversion. Finally, a bug-fix related to I2C_M_NOSTART is included.
 
 This branch is based on previous pull request tegra-for-3.7-common-clk.
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Merge tag 'tegra-for-3.7-drivers-i2c' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra into next/drivers

From Stephen Warren:

ARM: tegra: i2c driver enhancements mostly related to clocking

This branch contains a number of fixes and cleanups to the Tegra I2C
driver related to clocks. These are based on the common clock conversion
in order to avoid duplicating the clock driver changes before and after
the conversion. Finally, a bug-fix related to I2C_M_NOSTART is included.

This branch is based on previous pull request tegra-for-3.7-common-clk.

* tag 'tegra-for-3.7-drivers-i2c' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra:
  i2c: tegra: dynamically control fast clk
  i2c: tegra: I2_M_NOSTART functionality not supported in Tegra20
  ARM: tegra: clock: remove unused clock entry for i2c
  ARM: tegra: clock: add connection name in i2c clock entry
  i2c: tegra: pass proper name for getting clock
  ARM: tegra: clock: add i2c fast clock entry in clock table
  ARM: Tegra: Add smp_twd clock for Tegra20
  ARM: tegra: cpu-tegra: explicitly manage re-parenting
  ARM: tegra: fix overflow in tegra20_pll_clk_round_rate()
  ARM: tegra: Fix data type for io address
  ARM: tegra: remove tegra_timer from tegra_list_clks
  ARM: tegra30: clocks: fix the wrong tegra_audio_sync_clk_ops name
  ARM: tegra: clocks: separate tegra_clk_32k_ops from Tegra20 and Tegra30
  ARM: tegra: Remove duplicate code
  ARM: tegra: Port tegra to generic clock framework
  ARM: tegra: Add clk_tegra structure and helper functions
  ARM: tegra: Rename tegra20 clock file
  ARM: tegra20: Separate out clk ops and clk data
  ARM: tegra30: Separate out clk ops and clk data
  ARM: tegra: fix U16 divider range check
  ...
  + sync to v3.6-rc4

Resolved remove/modify conflict in arch/arm/mach-sa1100/leds-hackkit.c
caused by the sync with v3.6-rc4.

Signed-off-by: Olof Johansson <olof@lixom.net>
2012-09-16 18:31:37 -07:00
Arnd Bergmann
db298da2c3 ARM: nomadik: move platform_data definitions
Platform data for device drivers should be defined in
include/linux/platform_data/*.h, not in the architecture
and platform specific directories.

This moves such data out of the nomadik include directories

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Felipe Balbi <balbi@ti.com>
Acked-by: Alessandro Rubini <rubini@unipv.it>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Cc: STEricsson <STEricsson_nomadik_linux@list.st.com>
Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Andreas Westin <andreas.westin@stericsson.com>
2012-09-14 11:19:00 +02:00
Arnd Bergmann
293b2da1b6 ARM: pxa: move platform_data definitions
Platform data for device drivers should be defined in
include/linux/platform_data/*.h, not in the architecture
and platform specific directories.

This moves such data out of the pxa include directories

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Acked-by: Igor Grinberg <grinberg@compulab.co.il>
Acked-by: Jeff Garzik <jgarzik@redhat.com>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Acked-by: Paul Parsons <lost.distance@yahoo.com>
Acked-by: Vinod Koul <vinod.koul@linux.intel.com>
Acked-By: Stefan Schmidt <stefan@openezx.org>
Cc: Eric Miao <eric.y.miao@gmail.com>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: Daniel Ribeiro <drwyrm@gmail.com>
Cc: Harald Welte <laforge@openezx.org>
Cc: Philipp Zabel <philipp.zabel@gmail.com>
Cc: Tomas Cech <sleep_walker@suse.cz>
Cc: Sergey Lapin <slapin@ossfans.org>
Cc: Jonathan Cameron <jic23@cam.ac.uk>
Cc: Dan Williams <djbw@fb.com>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Chris Ball <cjb@laptop.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Samuel Ortiz <samuel@sortiz.org>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: Liam Girdwood <lrg@ti.com>
Cc: Jaroslav Kysela <perex@perex.cz>
Cc: Takashi Iwai <tiwai@suse.de>
Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Cc: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Cc: openezx-devel@lists.openezx.org
2012-09-14 11:18:10 +02:00
Arnd Bergmann
82906b13a6 ARM: imx: move platform_data definitions
Platform data for device drivers should be defined in
include/linux/platform_data/*.h, not in the architecture
and platform specific directories.

This moves such data out of the imx include directories

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Acked-by: Sascha Hauer <kernel@pengutronix.de>
Acked-by: Vinod Koul <vinod.koul@linux.intel.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Dan Williams <djbw@fb.com>
Cc: "Ben Dooks (embedded platforms)" <ben-linux@fluff.org>
Cc: "Wolfram Sang (embedded platforms)" <w.sang@pengutronix.de>
Cc: Chris Ball <cjb@laptop.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Alan Cox <alan@linux.intel.com>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: Liam Girdwood <lrg@ti.com>
Cc: Javier Martin <javier.martin@vista-silicon.com>
Cc: Shawn Guo <shawn.guo@linaro.org>
Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
2012-09-14 11:17:21 +02:00
Arnd Bergmann
ec2a0833e5 ARM: davinci: move platform_data definitions
Platform data for device drivers should be defined in
include/linux/platform_data/*.h, not in the architecture
and platform specific directories.

This moves such data out of the davinci include directories

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Cc: Sekhar Nori <nsekhar@ti.com>
Cc: Kevin Hilman <khilman@ti.com>
Cc: "Ben Dooks" <ben-linux@fluff.org>
Cc: "Wolfram Sang" <w.sang@pengutronix.de>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Chris Ball <cjb@laptop.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Liam Girdwood <lrg@ti.com>
Cc: davinci-linux-open-source@linux.davincidsp.com
2012-09-14 11:16:54 +02:00
Tony Lindgren
7d7e1eba7e ARM: OMAP2+: Prepare for irqs.h removal
As the interrupts should only be defined in the platform_data, and
eventually coming from device tree, there's no need to define them
in header files.

Let's remove the hardcoded references to irqs.h and fix up the includes
so we don't rely on headers included in irqs.h. Note that we're
defining OMAP_INTC_START as 0 to the interrupts. This will be needed
when we enable SPARSE_IRQ. For some drivers we need to add
#include <plat/cpu.h> for now until these drivers are fixed to
remove cpu_is_omapxxxx() usage.

While at it, sort som of the includes the standard way, and add
the trailing commas where they are missing in the related data
structures.

Note that for drivers/staging/tidspbridge we just define things
locally.

Cc: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-09-12 18:06:30 -07:00
Tony Lindgren
4b25408f1f ARM: OMAP: Move gpio.h to include/linux/platform_data
This way we can remove includes of plat/gpio.h which won't work
with the single zImage support.

Note that we also remove the cpu_class_is_omap2() check
in gpio-omap.c as the drivers should not call it as we need to
make it local to arch/arm/mach-omap2 for single zImage support.

While at it, arrange the related includes in the standard way.

Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: linux-mtd@lists.infradead.org
Cc: alsa-devel@alsa-project.org
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-09-12 18:06:30 -07:00
Tony Lindgren
a1e01703ba Changes for GPMC (General Purpose Memory Controller) that take it
closer for being just a regular device driver.
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mergetag object cf3a6ec2c0
 type commit
 tag cleanup-omap-tags-for-v3.7
 tagger Tony Lindgren <tony@atomide.com> 1347323254 -0700
 
 Remove the ancient omap specific atags that are no longer needed.
 
 At some point we were planning to pass the bootloader information
 with custom atags that did not work out too well.
 
 There's no need for these any longer as the kernel has been booting
 fine without them for quite some time. And Now we have device tree
 support that can be used instead.
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Merge tags 'omap-devel-gpmc-fixed-for-v3.7' and 'cleanup-omap-tags-for-v3.7' into cleanup-sparseirq

Changes for GPMC (General Purpose Memory Controller) that take it
closer for being just a regular device driver.

Remove the ancient omap specific atags that are no longer needed.

At some point we were planning to pass the bootloader information
with custom atags that did not work out too well.

There's no need for these any longer as the kernel has been booting
fine without them for quite some time. And Now we have device tree
support that can be used instead.
2012-09-12 18:05:19 -07:00
Igor Grinberg
cf3a6ec2c0 ARM: OMAP: remove plat/board.h file
plat/board.h file is now empty - remove it.

Cc: Jarkko Lavinen <jarkko.lavinen@nokia.com>
Cc: Chris Ball <cjb@laptop.org>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: linux-mmc@vger.kernel.org
Cc: linux-mtd@lists.infradead.org
Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Acked-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-09-10 16:39:21 -07:00
Olof Johansson
1875962377 Merge branch 'soc-core' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/dt
* 'soc-core' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  ARM: mach-shmobile: Add compilation support for dtbs using 'make dtbs'
  + sync to 3.6-rc3
2012-09-05 15:35:48 -07:00
Arnd Bergmann
3fbb96d275 Merge branch 'cleanup/io-pci' into next/cleanup
The io-pci series has gained a merge to resolve a nontrivial
conflict.

* cleanup/io-pci:
  ARM: Fix ioremap() of address zero

Also includes an update to Linux 3.6-rc3

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-09-04 15:07:35 +02:00
Artem Bityutskiy
78b495c39a UBI: fix a horrible memory deallocation bug
UBI was mistakingly using 'kfree()' instead of 'kmem_cache_free()' when
freeing "attach eraseblock" structures in vtbl.c. Thankfully, this happened
only when we were doing auto-format, so many systems were unaffected. However,
there are still many users affected.

It is strange, but the system did not crash and nothing bad happened when
the SLUB memory allocator was used. However, in case of SLOB we observed an
crash right away.

This problem was introduced in 2.6.39 by commit
"6c1e875 UBI: add slab cache for ubi_scan_leb objects"

A note for stable trees:
  Because variable were renamed, this won't cleanly apply to older kernels.
  Changing names like this should help:
	1. ai -> si
	2. aeb_slab_cache -> seb_slab_cache
	3. new_aeb -> new_seb

Reported-by: Richard Genoud <richard.genoud@gmail.com>
Tested-by: Richard Genoud <richard.genoud@gmail.com>
Tested-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Cc: stable@vger.kernel.org [v2.6.39+]
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-09-04 09:40:26 +03:00
Artem Bityutskiy
719bb84017 UBI: print less
UBI currently prints a lot of information when it mounts a volume, which
bothers some people. Make it less chatty - print only important information
by default.

Get rid of 'dbg_msg()' macro completely.

Reported-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-09-04 09:39:02 +03:00
Artem Bityutskiy
e28453bbb7 UBI: use pr_ helper instead of printk
Use 'pr_err()' instead of 'printk(KERN_ERR', etc.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-09-04 09:39:02 +03:00
Artem Bityutskiy
049333cecb UBI: comply with coding style
Join all the split printk lines in order to stop checkpatch complaining.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-09-04 09:39:01 +03:00
Matthieu CASTET
193819cf2e UBI: erase free PEB with bitflip in EC header
Without this patch, these PEB are not scrubbed until we put data in them.
Bitflip can accumulate latter and we can loose the EC header (but VID header
should be intact and allow to recover data).

Signed-off-by: Matthieu Castet <matthieu.castet@parrot.com>
Cc: stable@vger.kernel.org
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-09-04 09:39:01 +03:00
Artem Bityutskiy
abb3e01103 UBI: fix autoresize handling in R/O mode
Currently UBI fails in autoresize when it is in R/O mode (e.g., because the
underlying MTD device is R/O). This patch fixes the issue - we just skip
autoresize and print a warning.

Reported-by: Pali Rohár <pali.rohar@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-09-04 09:39:01 +03:00
Richard Genoud
db7e21c21f UBI: add max_beb_per1024 to attach ioctl
This patch provides a possibility to set the "maximum expected number of
bad blocks per 1024 blocks" (max_beb_per1024) for each mtd device using
the UBI_IOCATT ioctl.

Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-09-04 09:39:01 +03:00
Richard Genoud
edac493dfb UBI: allow specifying bad PEBs limit using module parameter
This patch provides the possibility to adjust the "maximum expected number of
bad blocks per 1024 blocks" (max_beb_per1024) for each mtd device.

The majority of NAND devices have their max_beb_per1024 equal to 20, but
sometimes it's more.
Now, we can adjust that via a kernel parameter:
ubi.mtd=<name|num|path>[,<vid_hdr_offs>[,max_beb_per1024]]

Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-09-04 09:39:01 +03:00
Richard Genoud
d2f588f934 UBI: check max_beb_per1024 value in ubi_attach_mtd_dev
max_beb_per1024 shouldn't be negative, and a 0 value will be treated as
the default value. For the upper bound, 768/1024 should be enough.

Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-09-04 09:39:01 +03:00
Richard Genoud
256334c319 UBI: prepare for max_beb_per1024 module parameter addition
This patch prepare the way for the addition of max_beb_per1024 module
parameter.  There's no functional change.

Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
Reviewed-by: Shmulik Ladkani <shmulik.ladkani@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-09-04 09:39:01 +03:00
Richard Genoud
5993f9b738 UBI: introduce MTD_PARAM_MAX_COUNT
Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-09-04 09:39:01 +03:00
Richard Genoud
95e6fb027e UBI: separate bad_peb_limit in a function
No functional changes here, just to prepare for next patch.

Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-09-04 09:39:00 +03:00
Richard Genoud
ba4087e956 UBI: use the whole MTD device size to get bad_peb_limit
On NAND flash devices, UBI reserves some physical erase blocks (PEB) for
bad block handling. Today, the number of reserved PEB can only be set as a
percentage of the total number of PEB in each MTD partition. For example, for a
NAND flash with 128KiB PEB, 2 MTD partition of 20MiB (mtd0) and 100MiB (mtd1)
and 2% reserved PEB:
 - the UBI device on mtd0 will have 2 PEB reserved
 - the UBI device on mtd1 will have 16 PEB reserved

The problem with this behaviour is that NAND flash manufacturers give a
minimum number of valid block (NVB) during the endurance life of the
device, e.g.:

Parameter             Symbol    Min    Max    Unit      Notes
--------------------------------------------------------------
Valid block number     NVB     1004    1024   Blocks     1

From this number we can deduce the maximum number of bad PEB that a device will
contain during its endurance life: a 128MiB NAND flash (1024 PEB) will not have
less than 20 bad blocks during the flash endurance life.

But the manufacturer doesn't tell where those bad block will appear. He doesn't
say either if they will be equally disposed on the whole device (and I'm pretty
sure they won't). So, according to the datasheets, we should reserve the
maximum number of bad PEB for each UBI device (worst case scenario: 20 bad
blocks appears on the smallest MTD partition).

So this patch make UBI use the whole MTD device size to calculate the maximum
bad expected eraseblocks.

The Kconfig option is in per1024 blocks, thus it can have a default value of 20
which is *very* common for NAND devices.

Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-09-04 09:39:00 +03:00
Richard Genoud
62082e56cb mtd: mtdparts: introduce mtd_get_device_size
'mtd_get_device_size()' returns the size of the whole MTD device, that is the
mtd_info master size. This will be used by UBI to calculate the maximum number
of bad blocks (MBB) on a MTD device.

Artem: amended the patch a bit.

Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-09-04 09:38:58 +03:00
Richard Genoud
5dee4674c8 mtd: mark mtd_is_partition argument as constant
'struct mtd_info' is not modified by 'mtd_is_partition()' so it can be marked
as "const".

Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-09-04 09:38:58 +03:00
Shmulik Ladkani
1b2a579061 UBI: kill CONFIG_MTD_UBI_BEB_RESERVE
CONFIG_MTD_UBI_BEB_RESERVE and MIN_RESEVED_PEBS are no longer used,
since the amount of reserved eraseblocks for bad PEB handling is now
derived from 'ubi->bad_peb_limit' (ubi's maximum expected bad
eraseblocks).

Signed-off-by: Shmulik Ladkani <shmulik.ladkani@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com>
2012-09-04 09:38:58 +03:00
Shmulik Ladkani
37f758a036 UBI: limit amount of reserved eraseblocks for bad PEB handling
The existing mechanism of reserving PEBs for bad PEB handling has two
flaws:
- It is calculated as a percentage of good PEBs instead of total PEBs.
- There's no limit on the amount of PEBs UBI reserves for future bad
  eraseblock handling.

This patch changes the mechanism to overcome these flaws.

The desired level of PEBs reserved for bad PEB handling (beb_rsvd_level)
is set to the maximum expected bad eraseblocks (bad_peb_limit) minus the
existing number of bad eraseblocks (bad_peb_count).

The actual amount of PEBs reserved for bad PEB handling is usually set
to the desired level (but in some circumstances may be lower than the
desired level, e.g. when attaching to a device that has too few
available PEBs to satisfy the desired level).

In the case where the device has too many bad PEBs (above the expected
limit), then the desired level, and the actual amount of PEBs reserved
are set to zero. No PEBs will be set aside for future bad eraseblock
handling - even if some PEBs are made available (e.g. by shrinking a
volume).
If another PEB goes bad, and there are available PEBs, then the
eraseblock will be marked bad (consuming one available PEB). But if
there are no available PEBs, ubi will go into readonly mode.

Signed-off-by: Shmulik Ladkani <shmulik.ladkani@gmail.com>
2012-09-04 09:38:58 +03:00
Shmulik Ladkani
8beeb3bb9d UBI: introduce new bad PEB limit
Introduce 'ubi->bad_peb_limit', which specifies an upper limit of PEBs
UBI expects to go bad.  Currently, it is initialized to a fixed percentage
of total PEBs in the UBI device (configurable via CONFIG_MTD_UBI_BEB_LIMIT).

The 'bad_peb_limit' is intended to be used for calculating the amount of PEBs
UBI needs to reserve for bad eraseblock handling.

Artem: minor amendments.

Signed-off-by: Shmulik Ladkani <shmulik.ladkani@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com>
2012-09-04 09:38:58 +03:00
Artem Bityutskiy
183ae6cf8b UBI: print PID in debug messages
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-09-04 09:38:57 +03:00
Artem Bityutskiy
5739dd7213 UBI: print image sequence number as unsigned integer
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-09-04 09:38:57 +03:00
Afzal Mohammed
5c4684557b mtd: nand: omap2: use gpmc provided irqs
GPMC platform initialization provides it's clients
with interrupts that can be used through struct
resource. Make use of it for irq mode functionality.

Also now write protect disable is done by GPMC,
hence remove it.

Signed-off-by: Afzal Mohammed <afzal@ti.com>
Acked-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
[tony@atomide.com: updated to fix new warnings introduced]
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-08-30 12:53:24 -07:00
Afzal Mohammed
d65ccb6da6 mtd: onenand: omap2: obtain memory from resource
gpmc initialization for onenand done by platform code now provides
onenand address space as memory resource. Hence remove usage of
gpmc_cs_request in onenand driver and obtain memory details from
resource structure.

Signed-off-by: Afzal Mohammed <afzal@ti.com>
Acked-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-08-30 12:53:23 -07:00
Afzal Mohammed
9c4c2f8b91 mtd: nand: omap2: obtain memory from resource
gpmc initialization done by platform code now updates struct resource
with the address space alloted for nand. Use this interface to obtain
memory rather than relying on platform data field - phys_base.

Signed-off-by: Afzal Mohammed <afzal@ti.com>
Acked-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-08-30 12:53:23 -07:00
Afzal Mohammed
65b97cf6b8 mtd: nand: omap2: handle nand on gpmc
GPMC platform initialization has been modified to fill NAND
platform data with GPMC NAND register details. As these
registers are accessible in NAND driver itself, configure
NAND in GPMC by itself.

Modified prefetch and ecc functions are logically same as
the corresponding exported symbols from GPMC code.

Note: Verfying that other CS have not yet enabled for
prefetch & ecc has to be incorporated. Currently this
causes no issues as there are no boards that use NAND
on multiple CS. With ongoing GPMC driver migration,
perhaps it would be better to consider NAND connected
on multiple CS as a single peripheral using multiple CS.
This would make handling multiple CS issues easier.

Signed-off-by: Afzal Mohammed <afzal@ti.com>
Acked-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-08-30 12:53:22 -07:00
David Woodhouse
2361f738b6 Linux 3.6-rc2
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Merge tag 'v3.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux

Having missed the merge window, update to 3.6-rc2 to avoid conflicts with
new patches.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-08-22 12:55:43 +01:00
Tejun Heo
43829731dd workqueue: deprecate flush[_delayed]_work_sync()
flush[_delayed]_work_sync() are now spurious.  Mark them deprecated
and convert all users to flush[_delayed]_work().

If you're cc'd and wondering what's going on: Now all workqueues are
non-reentrant and the regular flushes guarantee that the work item is
not pending or running on any CPU on return, so there's no reason to
use the sync flushes at all and they're going away.

This patch doesn't make any functional difference.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Ian Campbell <ian.campbell@citrix.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Mattia Dongili <malattia@linux.it>
Cc: Kent Yoder <key@linux.vnet.ibm.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Karsten Keil <isdn@linux-pingi.de>
Cc: Bryan Wu <bryan.wu@canonical.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Alasdair Kergon <agk@redhat.com>
Cc: Mauro Carvalho Chehab <mchehab@infradead.org>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: linux-wireless@vger.kernel.org
Cc: Anton Vorontsov <cbou@mail.ru>
Cc: Sangbeom Kim <sbkim73@samsung.com>
Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Eric Van Hensbergen <ericvh@gmail.com>
Cc: Takashi Iwai <tiwai@suse.de>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Cc: Petr Vandrovec <petr@vandrovec.name>
Cc: Mark Fasheh <mfasheh@suse.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Avi Kivity <avi@redhat.com>
2012-08-20 14:51:24 -07:00
Haojian Zhuang
6e308f87c8 mtd: nand: append missing parameter and value
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
2012-08-20 13:51:55 +08:00
Daniel Mack
1e7ba630d4 MTD: pxa3xx-nand: add devicetree bindings
This patch contains a hack to get the DMA resources of the device when
probed from a devicetree node. This can be removed once a generic DMA
controller framework lands.

A mtd_part_parser_data is passed mtd_device_parse_register which
contains a reference to the device node, so MTD partitions can be
added as children.

Signed-off-by: Daniel Mack <zonque@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
2012-08-16 16:14:24 +08:00
Arnd Bergmann
e05dd97c5c Merge tag 'at91-for-next-soc' of git://github.com/at91linux/linux-at91 into at91/mci
AT91 SoC related code modifications: a cleanup in defconfigs and
a one liner in a board file.
The most important is the move to atmel-mci driver in AT91 SoC & boards.
The old at91_mci (marked as deprecated) will be removed in 3.7. So all
platform data for this old driver are erased and replace by information
needed by atmel-mci driver.

* tag 'at91-for-next-soc' of git://github.com/at91linux/linux-at91:
  ARM: at91: add atmel-mci support for chips and boards which can use it
  ARM: at91/defconfig: change the MCI driver to use in defconfigs
  ARM: at91: set i2c_board_info.type to "ds1339" directly
  ARM: at91/defconfig: Remove unaffected config option

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-08-13 17:09:38 +02:00
Arnd Bergmann
a4c75ba85c Merge branch 'testing/bcmring' into next/cleanups
This attempts to get the bcmring platform better in line with the
other platforms. Moving the header files below mach/ helps with
the future reorganization for multiplatform kernels, and using
MMIO accessors is generally the right thing.

* testing/bcmring:
  ARM: bcmring: use proper MMIO accessors
  ARM: bcmring: remove include/csp/ subdir
  ARM: bcmring: move cfg_global header to mach/

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-08-13 17:01:31 +02:00
Linus Torvalds
88de3d0d71 arm-soc: bug fixes for v3.6-rc2
These are a bunch of bug fixes that came in after the merge window and
 one update for the MAINTAINERS file. The largest part of the fixes
 are patches that address bugs found by building all the ARM defconfig
 files. There are a lot more warnings that we have patches for, but
 the others are either still under discussion or are harmless and
 do not cause actual problems besides making the build slightly noisy.
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull arm-soc bug fixes from Arnd Bergmann:
 "These are a bunch of bug fixes that came in after the merge window and
  one update for the MAINTAINERS file.

  The largest part of the fixes are patches that address bugs found by
  building all the ARM defconfig files.  There are a lot more warnings
  that we have patches for, but the others are either still under
  discussion or are harmless and do not cause actual problems besides
  making the build slightly noisy."

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (30 commits)
  ARM: davinci: remove broken ntosd2_init_i2c
  ARM: s3c24xx: enable CONFIG_BUG for tct_hammer
  omap-rng: fix use of SIMPLE_DEV_PM_OPS
  spi/s3c64xx: improve error handling
  mtd/omap2: fix dmaengine_slave_config error handling
  gpio: em: do not discard em_gio_irq_domain_cleanup
  ARM: exynos: exynos_pm_add_dev_to_genpd may be unused
  ARM: imx: gpmi-nand depends on mxs-dma
  ARM: integrator: include <linux/export.h>
  ARM: s3c24xx: use new PWM driver
  ARM: sa1100: include linux/io.h in hackkit leds code
  Input: eeti_ts: pass gpio value instead of IRQ
  ARM: pxa: remove irq_to_gpio from ezx-pcap driver
  ARM: tegra: more regulator fixes for Harmony
  usb/ohci-omap: remove unused variable
  mfd/asic3: fix asic3_mfd_probe return value
  ARM: kirkwood: fix typo in Makefile.boot
  i.MX27: Fix emma-prp and csi clocks.
  ARM: integrator: use clk_prepare_enable() for timer
  MAINTAINERS: update entry for Linus Walleij
  ...
2012-08-12 21:31:44 +03:00
Arnd Bergmann
b64456a4fc Merge branch 'testing/new-warnings' into fixes
These patches all fix bugs that were newly introduced in v3.6-rc1
and found because they cause a gcc warning with one of the ARM
defconfigs. Most of them are harmless, but since we're trying
to get rid of all warnings eventually, we can start with the ones
that were not there before.

* testing/new-warnings:
  omap-rng: fix use of SIMPLE_DEV_PM_OPS
  spi/s3c64xx: improve error handling
  mtd/omap2: fix dmaengine_slave_config error handling
  gpio: em: do not discard em_gio_irq_domain_cleanup
  ARM: exynos: exynos_pm_add_dev_to_genpd may be unused
  usb/ohci-omap: remove unused variable
  mfd/asic3: fix asic3_mfd_probe return value

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-08-10 12:28:57 +02:00
Arnd Bergmann
d680e2c11e mtd/omap2: fix dmaengine_slave_config error handling
The newly added dmaengine support in the omap2 nand driver
potentially causes an undefined return value from the
omap_nand_probe function when dmaengine_slave_config
reports an error. Let's handle this by returning the
same error back to the caller.

Without this patch, building omap2plus_defconfig results in:

drivers/mtd/nand/omap2.c: In function 'omap_nand_probe':
drivers/mtd/nand/omap2.c:1154:6: warning: 'err' may be used uninitialized in this function [-Wuninitialized]

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Grazvydas Ignotas <notasas@gmail.com>
2012-08-10 12:27:46 +02:00
Arnd Bergmann
a33493775d ARM: imx: gpmi-nand depends on mxs-dma
It is not currently possible to build the gpmi-nand driver without
also building the mxs-dma driver. Clarify this Kconfig and enable
both in the defconfig file so we can build it again with both enabled.

drivers/built-in.o: In function `gpmi_dma_filter':
clk-fixed-factor.c:(.text+0xafc18): undefined reference to `mxs_dma_is_apbh'
make[1]: *** [vmlinux] Error 1
make: *** [sub-make] Error 2

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Dirk Behme <dirk.behme@de.bosch.com>
Cc: Shawn Guo <shawn.guo@linaro.org>
Cc: Sascha Hauer <kernel@pengutronix.de>
2012-08-09 15:16:44 +02:00
Linus Torvalds
587a9e1f95 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k
Pull m68k updates from Geert Uytterhoeven.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k: Make sys_atomic_cmpxchg_32 work on classic m68k
  m68k/apollo: Rename "timer" to "apollo_timer"
  zorro: Remove unused zorro_bus.devices
  m68k: Remove never used asm/shm.h
  m68k/sun3: Remove unselectable code in prom_init()
  m68k: Use asm-generic version of <asm/sections.h>
  m68k: Replace m68k-specific _[se]bss by generic __bss_{start,stop}
  mtd/uclinux: Use generic __bss_stop instead of _ebss
  m68knommu: Allow ColdFire CPUs to use unaligned accesses
  m68k: Remove five unused headers
  m68k: CPU32 does not support unaligned accesses
  m68k: Introduce config option CPU_HAS_NO_UNALIGNED
  m68k: delay, muldi3 - Use CONFIG_CPU_HAS_NO_MULDIV64
  m68k: Move CPU_HAS_* config options
  m68k: Remove duplicate FPU config option
  m68knommu: Clean up printing of sections
  m68k: Use asm-generic version of <asm/types.h>
  m68k: Use Kbuild logic to import asm-generic headers
2012-08-03 10:52:41 -07:00
Linus Torvalds
a6dc77254b Merge branch 'dmaengine' of git://git.linaro.org/people/rmk/linux-arm
Pull ARM DMA engine updates from Russell King:
 "This looks scary at first glance, but what it is is:
   - a rework of the sa11x0 DMA engine driver merged during the previous
     cycle, to extract a common set of helper functions for DMA engine
     implementations.
   - conversion of amba-pl08x.c to use these helper functions.
   - addition of OMAP DMA engine driver (using these helper functions),
     and conversion of some of the OMAP DMA users to use DMA engine.

  Nothing in the helper functions is ARM specific, so I hope that other
  implementations can consolidate some of their code by making use of
  these helpers.

  This has been sitting in linux-next most of the merge cycle, and has
  been tested by several OMAP folk.  I've tested it on sa11x0 platforms,
  and given it my best shot on my broken platforms which have the
  amba-pl08x controller.

  The last point is the addition to feature-removal-schedule.txt, which
  will have a merge conflict.  Between myself and TI, we're planning to
  remove the old TI DMA implementation next year."

Fix up trivial add/add conflicts in Documentation/feature-removal-schedule.txt
and drivers/dma/{Kconfig,Makefile}

* 'dmaengine' of git://git.linaro.org/people/rmk/linux-arm: (53 commits)
  ARM: 7481/1: OMAP2+: omap2plus_defconfig: enable OMAP DMA engine
  ARM: 7464/1: mmc: omap_hsmmc: ensure probe returns error if DMA channel request fails
  Add feature removal of old OMAP private DMA implementation
  mtd: omap2: remove private DMA API implementation
  mtd: omap2: add DMA engine support
  spi: omap2-mcspi: remove private DMA API implementation
  spi: omap2-mcspi: add DMA engine support
  ARM: omap: remove mmc platform data dma_mask and initialization
  mmc: omap: remove private DMA API implementation
  mmc: omap: add DMA engine support
  mmc: omap_hsmmc: remove private DMA API implementation
  mmc: omap_hsmmc: add DMA engine support
  dmaengine: omap: add support for cyclic DMA
  dmaengine: omap: add support for setting fi
  dmaengine: omap: add support for returning residue in tx_state method
  dmaengine: add OMAP DMA engine driver
  dmaengine: sa11x0-dma: add cyclic DMA support
  dmaengine: sa11x0-dma: fix DMA residue support
  dmaengine: PL08x: ensure all descriptors are freed when channel is released
  dmaengine: PL08x: get rid of write only pool_ctr and free_txd locking
  ...
2012-08-01 16:41:07 -07:00
Russell King
2df41d0533 mtd: omap2: remove private DMA API implementation
Remove the private DMA API implementation from nand/omap2.c
making it use entirely the DMA engine API.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-31 12:06:25 +01:00
Russell King
763e735910 mtd: omap2: add DMA engine support
Add DMA engine support to the OMAP2 NAND driver.  This supplements the
private DMA API implementation contained within this driver, and the
driver can be independently switched at build time between using DMA
engine and the private DMA API.

Tested-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-31 12:06:24 +01:00
Linus Torvalds
287dc4b764 Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS updates from Ralf Baechle:
 "More hardware support across the field including a bunch of device
  drivers.  The highlight however really are further steps towards
  device tree.

  This has been sitting in -next for ages.  All MIPS _defconfigs have
  been tested to boot or where I don't have hardware available, to at
  least build fine."

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (77 commits)
  MIPS: Loongson 1B: Add defconfig
  MIPS: Loongson 1B: Add board support
  MIPS: Netlogic: early console fix
  MIPS: Netlogic: Fix indentation of smpboot.S
  MIPS: Netlogic: remove cpu_has_dc_aliases define for XLP
  MIPS: Netlogic: Remove unused pcibios_fixups
  MIPS: Netlogic: Add XLP SoC devices in FDT
  MIPS: Netlogic: Add IRQ mappings for more devices
  MIPS: Netlogic: USB support for XLP
  MIPS: Netlogic: XLP PCIe controller support.
  MIPS: Netlogic: Platform changes for XLR/XLS I2C
  MIPS: Netlogic: Platform NAND/NOR flash support
  MIPS: Netlogic: Platform changes for XLS USB
  MIPS: Netlogic: Remove NETLOGIC_ prefix
  MIPS: Netlogic: SMP wakeup code update
  MIPS: Netlogic: Update comments in smpboot.S
  MIPS: BCM63XX: Add 96328avng reference board
  MIPS: Expose PCIe drivers for MIPS
  MIPS: BCM63XX: Add PCIe Support for BCM6328
  MIPS: BCM63XX: Move the PCI initialization into its own function
  ...
2012-07-30 11:45:52 -07:00
Arnd Bergmann
c1f9c4227c Merge branch 'v3.5-rc7-fixes' of git://github.com/lunn/linux into fixes
From Andrew Lunn <andrew@lunn.ch>:

* 'v3.5-rc7-fixes' of git://github.com/lunn/linux:
  ARM: Kirkwood: Replace mrvl with marvell
  ARM: Orion: fix driver probe error handling with respect to clk
  ARM: Dove: Fixup ge00 initialisation
  ARM: Kirkwood: Fix PHY disable clk problems
  ARM: Kirkwood: Ensure runit clock always ticks.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-07-25 21:37:09 +02:00
Andrew Lunn
778435045a ARM: Kirkwood: Replace mrvl with marvell
It has been decided to use marvell, not mrvl, in the compatibility
property. Search & replace.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
2012-07-25 17:06:23 +02:00
Simon Baatz
baffab28b1 ARM: Orion: fix driver probe error handling with respect to clk
The clk patches added code to get and enable clocks in the
respective driver probe functions.  If the probe function failed
for some reason after enabling the clock, the clock was not
disabled again in many cases.

Signed-off-by: Simon Baatz <gmbnomis@gmail.com>
Signed-off-by: Andrew Lumm <andrew@lunn.ch>
2012-07-25 17:06:21 +02:00
Linus Torvalds
ce447f34a7 Change the default amount of eraseblocks which UBI reserves for bad block
handling from 1% to 2%, because 1% does not meet most modern flashes
 requirements. 1% was good enough in the past for old high-quality SLCs, but
 nowadays 2% is much more appropriate.
 
 Other changes are clean-ups.
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Merge tag 'upstream-3.6-rc1' of git://git.infradead.org/linux-ubi

Pull UBI changes from Artem Bityutskiy:
 "Change the default amount of eraseblocks which UBI reserves for bad
  block handling from 1% to 2%, because 1% does not meet most modern
  flash requirements.  1% was good enough in the past for old
  high-quality SLCs, but nowadays 2% is much more appropriate.:

Other changes are clean-ups.

* tag 'upstream-3.6-rc1' of git://git.infradead.org/linux-ubi:
  UBI: harmonize the update of ubi->beb_rsvd_pebs
  UBI: trivial: fix comment of ubi_calculate_reserved function
  UBI: fix spelling of detach in debug output
  UBI: Change the default percentage of reserved PEB
2012-07-23 15:53:06 -07:00
Maarten ter Huurne
1471d41a5b MTD: NAND: JZ4740: Multi-bank support with autodetection
The platform data can now specify which external memory banks to probe
for NAND chips, and in which order. Banks that contain a NAND are used
and the other banks are freed.

Squashed version of development done in jz-2.6.38 branch.
Original patch by Lars-Peter Clausen with some bug fixes from me.
Thanks to Paul Cercueil for the initial autodetection patch.

Signed-off-by: Maarten ter Huurne <maarten@treewalker.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3560/
Acked-By: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-07-23 13:56:20 +01:00
Shmulik Ladkani
87e773c95e UBI: harmonize the update of ubi->beb_rsvd_pebs
Currently, there are several locations where an attempt to reserve more
PEBs for bad PEB handling is made, with the same code being duplicated.

Harmonize it by introducing 'ubi_update_reserved()'.

Also, improve the debug message issued, making it more descriptive.

Artem: amended the patch a little.

Signed-off-by: Shmulik Ladkani <shmulik.ladkani@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com>
2012-07-18 14:30:34 +03:00
Shmulik Ladkani
5c669a5bd8 UBI: trivial: fix comment of ubi_calculate_reserved function
The function name within the comment was not aligned with the actual
function name.

Signed-off-by: Shmulik Ladkani <shmulik.ladkani@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com>
2012-07-18 13:33:03 +03:00
Peter Meerwald
2ce7be1b77 UBI: fix spelling of detach in debug output
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com>
2012-07-18 10:13:41 +03:00
Richard Genoud
54de1f1c44 UBI: Change the default percentage of reserved PEB
The actual value (1%) is too low for actual NAND devices, a huge
majority of device has 2% maximum bad blocks (SLC or MLC).
(Actually it's 20 blocks on a 1024 blocks device, 40/2048...)

Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
2012-07-18 10:13:41 +03:00
Knut Wohlrab
4800399e33 mtd: m25p80: Add support for serial flash STM/Micron N25Q032
Signed-off-by: Knut Wohlrab <knut.wohlrab@de.bosch.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-17 14:49:55 +01:00
Huang Shijie
e0dd89c56e mtd: gpmi: update the bitflip_threshold
The origin code misses to update the bitflip_threshold when
we have already get the right ecc_strength.

The patch fixes it.

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>
2012-07-17 14:48:09 +01:00
Huang Shijie
c50c69402a mtd: gpmi: add on-flash BBT support for gpmi nand
add the on flash bbt support for gpmi nand driver.

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>
2012-07-16 21:46:46 +01:00
Huang Shijie
44ed0ffdbc mtd: fix typo in comment
fix the comment for nand_bbt.c

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>
2012-07-16 21:45:05 +01:00
Huang Shijie
11041ae65a mtd: use MTD_OPS_PLACE_OOB macro consistently
Use the MTD_OPS_PLACE_OOB to replace the hard code "0".
Make the code more readable.

Signed-off-by: Huang Shijie <b32955@freescale.com>
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>
2012-07-16 21:43:17 +01:00
Gerlando Falauto
4209628843 mtd: cfi_cmdset_0002: Micron M29EW bugfixes as per TN-13-07
Fix the following issues with Micron's (formerly Numonyx)
M29EW NOR flash chips, as documented on TN-13-07:
- Correcting Erase Suspend Hang Ups (page 20)
- Resolving the Delay After Resume Issue (page 22)

Signed-off-by: Gerlando Falauto <gerlando.falauto@keymile.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-16 21:37:15 +01:00
Fabio Estevam
4d363b5518 mtd: mxc_nand: Select the driver via ARCH_MXC
With device tree support in place, we should not use IMX_HAVE_PLATFORM_MXC_NAND
as a dependency for selecting the mxc_nand driver.

Use ARCH_MXC symbol instead, so that the driver can be even selected when a single device-tree
machine is selected.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-16 21:34:37 +01:00
David Howells
9249e17fe0 VFS: Pass mount flags to sget()
Pass mount flags to sget() so that it can use them in initialising a new
superblock before the set function is called.  They could also be passed to the
compare function.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-07-14 16:38:34 +04:00
Linus Torvalds
36ec9fbfe7 Late MTD fixes for 3.5:
- fix 'sparse warning fix' regression which totally breaks MXC NAND
  - fix GPMI NAND regression when used with UBI
  - update/correct sysfs documentation for new 'bitflip_threshold' field
  - fix nandsim build failure
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Merge tag 'for-linus-20120712' of git://git.infradead.org/linux-mtd

Pull late MTD fixes from David Woodhouse:
 - fix 'sparse warning fix' regression which totally breaks MXC NAND
 - fix GPMI NAND regression when used with UBI
 - update/correct sysfs documentation for new 'bitflip_threshold' field
 - fix nandsim build failure

* tag 'for-linus-20120712' of git://git.infradead.org/linux-mtd:
  mtd: nandsim: don't open code a do_div helper
  mtd: ABI documentation: clarification of bitflip_threshold
  mtd: gpmi-nand: fix read page when reading to vmalloced area
  mtd: mxc_nand: use 32bit copy functions
2012-07-13 09:56:26 -07:00
Roland Stigge
79f9df7c00 mtd: lpc32xx_mlc: Adjust to pl08x DMA interface changes
This patch adjusts the LPC32xx MLC NAND driver to the new pl08x DMA interface,
fixing the compile error resulting from changed pl08x structures.

Signed-off-by: Roland Stigge <stigge@antcom.de>
Acked-By: Alexandre Pereira da Silva <aletes.xgr@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-13 16:27:34 +01:00
Roland Stigge
314a15664e mtd: lpc32xx_slc: Adjust to pl08x DMA interface changes
This patch adjusts the LPC32xx SLC NAND driver to the new pl08x DMA interface,
fixing the compile error resulting from changed pl08x structures.

Signed-off-by: Roland Stigge <stigge@antcom.de>
Acked-By: Alexandre Pereira da Silva <aletes.xgr@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-13 16:27:24 +01:00
Linus Torvalds
af9b9a53fa Two MTD fixes for 3.5:
- Fix a logic error in OLPC CAFÉ NAND ready() function.
 - Fix regression due to bitflip handling changes.
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Merge tag 'for-linus-20120706' of git://git.infradead.org/linux-mtd

Pull two MTD fixes from David Woodhouse:
 - Fix a logic error in OLPC CAFÉ NAND ready() function.
 - Fix regression due to bitflip handling changes.

* tag 'for-linus-20120706' of git://git.infradead.org/linux-mtd:
  mtd: cafe_nand: fix an & vs | mistake
  mtd: nand: initialize bitflip_threshold prior to BBT scanning
2012-07-06 10:34:48 -07:00
Vipin Kumar
2c99b8bfb2 mtd: spear_smi: handle return value of timeouts properly
Handle timouts in general and return value of
'wait_event_interruptible_timeout' in particular, to capture all
conditions.

'wait_event_interruptible_timeout' returns either of the following three
values :-
   * 0               - time out occurred.
   * negative
      * -ERESTARTSYS - return because of a signal
      * other        - for a real error
   * positive        - time remaining

Fix particularly 'ERESTARTSYS' condition which is not properly handled
by the smi driver at a couple of places leading to an erroneous
situation.

Signed-off-by: Antonio BORNEO <antonio.borneo@st.com>
Signed-off-by: Shiraz Hashim <shiraz.hashim@st.com>
Signed-off-by: Vipin Kumar <vipin.kumar@st.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-06 18:27:48 +01:00
Shiraz Hashim
4dc48c37d1 mtd: spear_smi: clear status register on init
It was observed that sometimes smi returned errors while resume from
suspend.

For safety reasons clear status register for any errors during init. In
absence of it smi can return failures during command transmissions.

Signed-off-by: Shiraz Hashim <shiraz.hashim@st.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-06 18:27:38 +01:00
Viresh Kumar
770daa4337 mtd: spear_smi: Move suspend/resume to follow dev_pm_ops
Use dev_pm_ops to support PM specific callbacks.

Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-06 18:27:26 +01:00
Roland Stigge
70f7cb78ec mtd: add LPC32xx MLC NAND driver
This patch adds a driver for the MLC NAND controller of the LPC32xx SoC.

[dwmw2: 21st century pedantry]

Signed-off-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-06 18:27:04 +01:00
Roland Stigge
d5842ab730 mtd: lpc32xx_slc: Make probe() return -EPROBE_DEFER if necessary
Via of_get_named_gpio(), wp_gpio can become -EPROBE_DEFER which now makes
probe() return -EPROBE_DEFER as well to wait until the gpio controller is
probed before trying to probe lpc32xx_slc again.

Signed-off-by: Roland Stigge <stigge@antcom.de>
Acked-by: Alexandre Pereira da Silva <aletes.xgr@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-06 18:25:25 +01:00
Roland Stigge
21535ab39a mtd: lpc32xx_slc: Use of_get_named_gpio()
This patch makes the lpc32xx_slc driver use of_get_named_gpio() instead of
of_get_named_gpio_flags() whose flags are discarded anyway.

Signed-off-by: Roland Stigge <stigge@antcom.de>
Acked-by: Alexandre Pereira da Silva <aletes.xgr@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-06 18:25:16 +01:00
Alexandre Pereira da Silva
df63fe7657 mtd: lpc32xx_slc: Make wp gpio optional
This patch supports missing wp gpio.

Signed-off-by: Alexandre Pereira da Silva <aletes.xgr@gmail.com>
Signed-off-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-07-06 18:24:56 +01:00
Josh Wu
1c7b874d33 mtd: at91: atmel_nand: add Programmable Multibit ECC controller support
The Programmable Multibit ECC (PMECC) controller is a programmable binary
BCH(Bose, Chaudhuri and Hocquenghem) encoder and decoder. This controller
can be used to support both SLC and MLC NAND Flash devices. It supports to
generate ECC to correct 2, 4, 8, 12 or 24 bits of error per sector of data.

To use PMECC in this driver, the user needs to set the address and size of
PMECC, PMECC error location controllers and ROM. And also needs to pass the
correction capability, the sector size and ROM lookup table offsets via dt.

This driver has been tested on AT91SAM9X5-EK and AT91SAM9N12-EK with JFFS2,
YAFFS2, UBIFS and mtd-utils.

Signed-off-by: Hong Xu <hong.xu@atmel.com>
Signed-off-by: Josh Wu <josh.wu@atmel.com>
Tested-by: Richard Genoud <richard.genoud@gmail.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-06 18:23:25 +01:00
Josh Wu
a41b51a1f7 mtd: at91: add dt parameters for Atmel PMECC
Add DT support for PMECC parameters.

Signed-off-by: Hong Xu <hong.xu@atmel.com>
Signed-off-by: Josh Wu <josh.wu@atmel.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-06 18:21:09 +01:00
Paul Gortmaker
fae255253b mtd: delete SBC82xx/SBC8560 MTD mapping support
The SBC8260 support was dropped back when we moved from ppc to
powerpc.  We are now also dropping the support for the EOL SBC8560,
so we can also delete this mapping support, as they were the only
users of it.

Artem: also remove the symbol from the Makefile.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-06 18:20:38 +01:00
Marek Vasut
b8c2d652f4 mtd: fix bogus inequation
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-06 18:17:55 +01:00
Brian Norris
718894ad94 mtd: nand_bbt: refactor check_pattern_no_oob()
This function only returns 0 or -1, so make that clear.

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>
2012-07-06 18:17:08 +01:00
Brian Norris
9fd6b37a08 mtd: nand: rename "no_bbt" descriptors to "no_oob"
These descriptors are for BBT's that don't use OOB; the "no_bbt" name doesn't
really make sense.

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>
2012-07-06 18:17:08 +01:00
Richard Genoud
947c9adb42 mtd: nand: remove stale config options
The commit bf4289cba0 removed the use of
CONFIG_MTD_NAND_ATMEL_ECC_NONE and CONFIG_MTD_NAND_ATMEL_ECC_HW but the
Kconfig file was forgotten.

This patch remove those inoperative options.

Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-06 18:17:08 +01:00
Brian Norris
9d9a881162 mtd: nand: change "AMD" manuf. ID to "AMD/Spansion"
This manufacturer ID is used under the name Spansion.

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>
2012-07-06 18:17:08 +01:00
Paul Bolle
2e61c3a577 mtd: chips: reorganize Kconfig help on swapping
The Kconfig help on "Flash cmd/query data swapping" still mentions
LART_ENDIAN_BYTE. That option used to be relevant for setting
CONFIG_MTD_CFI_LART_BIT_SWAP. That option and macro got both removed in
v2.4.11-pre4. So, although LART endianness sounds intriguing, that part
of the help text can be removed.

And, while we're touching this choice, move the help text up one level.
Currently it's available under the "NO" option, while it's relevant for
all three options.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-06 18:17:07 +01:00
Chunhe Lan
a5b2d76d72 mtd: m25p80: Add support for Atmel at45db081d
Signed-off-by: Chunhe Lan <Chunhe.Lan@freescale.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-06 18:17:07 +01:00
Roland Stigge
2944a44da0 mtd: add LPC32xx SLC NAND driver
This patch adds support for the SLC NAND controller inside the LPC32xx SoC.

[dwmw2: 21st century pedantry]

Signed-off-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-06 18:17:07 +01:00
Josh Wu
fdbad98dff mtd: nand: teach write_page and write_page_raw return an error code
There is an implemention of hardware ECC write page function which may return an
error indication.
For instance, using Atmel HW PMECC to write one page into a nand flash, the hardware
engine will compute the BCH ecc code for this page. so we need read a the
status register to theck whether the ecc code is generated.
But we cannot assume the status register always can be ready, for example,
incorrect hardware configuration or hardware issue, in such case we need
write_page() to return a error code.

Since the definition of 'write_page' function in struct nand_ecc_ctrl is 'void'.
So this patch will:
  1. add return 'int' value for 'write_page' function.
  2. to be consitent, add return 'int' value for 'write_page_raw' fuctions too.
  3. add code to test the return value, and if negative, indicate an
  error happend when write page with ECC.
  4. fix the compile warning in all impacted nand flash driver.

Note: I couldn't compile-test all of these easily, as some had ARCH dependencies.

Signed-off-by: Josh Wu <josh.wu@atmel.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-06 18:17:07 +01:00
Josh Wu
3dfe41a4c7 mtd: at91: extract hw ecc initialization to one function
This patch moves hw ecc initialization code to one function.

Signed-off-by: Hong Xu <hong.xu@atmel.com>
Signed-off-by: Josh Wu <josh.wu@atmel.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-06 18:17:07 +01:00
Alexandre Pereira da Silva
95c1b0ce2a mtd: m25p80: Add support for n25q064
Signed-off-by: Alexandre Pereira da Silva <aletes.xgr@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-06 18:17:07 +01:00
Alexandre Pereira da Silva
943b35a6da mtd: m25p80: Add support for m25pe20
Signed-off-by: Alexandre Pereira da Silva <aletes.xgr@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-06 18:17:06 +01:00
Shmulik Ladkani
7bb9c75436 mtd: nand: Use the mirror BBT descriptor when reading its version
The code responsible for reading the version of the mirror bbt was
incorrectly using the descriptor of the main bbt.

Pass the mirror bbt descriptor to 'scan_read_raw' when reading the
version of the mirror bbt.

Signed-off-by: Shmulik Ladkani <shmulik.ladkani@gmail.com>
Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: stable@vger.kernel.org [v2.6.37+]
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-06 18:17:06 +01:00
Sascha Hauer
71718a8edf mtd: mxc_nand: add i.MX53 support
The only relevant change between i.MX51 and i.MX53 is that
a bitfield is shifted one bit to the left.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-06 18:17:06 +01:00
Sascha Hauer
71885b650a mtd: mxc_nand: swap iomem resource order
The i.MX v3 nand controller (i.MX5) needs two memory resources.
Traditionally we have the AXI resource first. For sorting in this
driver into the devicetree it feels much more natural to have the
IP resource first. This patch swaps the ordering of these two
resources.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-06 18:17:06 +01:00
Sascha Hauer
e4a09cbf2d mtd: mxc_nand: Use managed resources
To make the error path simpler and to make subsequent patches
easier.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-06 18:17:05 +01:00
Scott Wood
874d72c4fe mtd: elbc nand: use drvdata to only remove the relevant chip
Previously the remove method was looping and removing all chips,
which is obviously not the right thing to do — left over from when
the driver was organized differently and that was the remove method for
the entire controller.  This would result in bad things happening if
you have more than one NAND chip, and remove the module.

This also fixes priv->dev to properly point to the chip's device rather than
the controller's.  Until now priv->dev was only used for error/debug prints
(and it's an improvement there), so this shouldn't break anything.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-06 18:17:05 +01:00
ing. Federico Fuga
9d6367f4f7 mtd: add JEDEC ID for w25q32dw to chip table
Adds JEDEC ID for the 1.8V version of WinBond w25q32.

Signed-off-by: Federico Fuga <fuga@studiofuga.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-06 18:17:05 +01:00
Fabio Estevam
3d059693f6 nand: mxc_nand: Use clk_prepare_enable/clk_disable_unprepare
Prepare the clock before enabling it.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-06 18:17:05 +01:00
Brian Norris
1696e6bc2a mtd: nand: kill NAND_NO_READRDY
According to its documentation, the NAND_NO_READRDY option is always used
when autoincrement is not supported. Autoincrement support was recently
dropped, so we can drop this options as well (defaulting to "no read ready
check").

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>
2012-07-06 18:17:05 +01:00
Brian Norris
b1ccfab31a mtd: nand: add Eon Silicon Solutions manufacturer ID
Eon's new NAND flash: EN27LN1G08.

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>
2012-07-06 18:17:04 +01:00
Artem Bityutskiy
bfea1d4ee5 mtd: tests: use random32 instead of home-brewed generator
This is a clean-up patch which removes the own pseudo-random numbers generator
from the speed- and stress-tests and makes them use the 'random32()' generator
instead.

[dwmw2: Merge later fix for negative offsets]

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-06 18:17:04 +01:00
Bastian Hecht
3166df0d04 mtd: sh_flctl: Use user oob data in hardware ECC mode
In hardware ecc mode, the flctl now writes and reads the oob data
provided by the user. Additionally the ECC is now returned in normal
page reads, not only when using the explicit NAND_CMD_READOOB command.

Signed-off-by: Bastian Hecht <hechtb@gmail.com>
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>
2012-07-06 18:17:04 +01:00
Bastian Hecht
6667a6d58e mtd: sh_flctl: Restructure the hardware ECC handling
There are multiple reasons for a rewrite:
 - a race exists: when _4ECCEND is set, _4ECCFA may become true too
   meanwhile, which is lost and a non-correctable error is treated as
   correctable.
 - the ECC statistics don't get properly propagated to the base code.
 - empty pages would get marked as corrupted

The rewrite resolves the issues and I hope it gives a more explicit
code flow structure.

Signed-off-by: Bastian Hecht <hechtb@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-06 18:17:04 +01:00
Bastian Hecht
623c55caa3 mtd: sh_flctl: Group sector accesses into a single transfer
When we use hardware ecc, the flctl is run in so-called "sector access
mode". We can bundle 4 sector accesses when using 2KiB page sizes to read
a whole page at once and speed up things.

Signed-off-by: Bastian Hecht <hechtb@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-06 18:17:04 +01:00
Bastian Hecht
50ed399cc3 mtd: sh_flctl: Simplify the hardware ecc page read/write
As the equation mtd->writesize == eccsteps * eccsize holds, we can
simplify the code. The second loop of the 1st hunk is never entered,
so we delete it.

Signed-off-by: Bastian Hecht <hechtb@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-06 18:17:03 +01:00
Bastian Hecht
ef4ce0bcb3 mtd: sh_flctl: Fix hardware ECC behaviour
The flctl uses 10 bytes ECC data for every 512 bytes sector. This patch
makes the controller write all 40 bytes instead of 10 bytes only.

Signed-off-by: Bastian Hecht <hechtb@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-06 18:17:03 +01:00
Bastian Hecht
aa32d1f060 mtd: sh_flctl: Use different OOB layout
The flctl hardware has changed and a new OOB layout must be adapted for
2KiB page size NAND chips when using hardware ECC.
The related bit fields ECCPOS[0-2] are gone — the bits are marked as
reserved now in the datasheet. As there are no official users of the
hardware ECC so far, they are completely removed.

Signed-off-by: Bastian Hecht <hechtb@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-06 18:17:03 +01:00
Bastian Hecht
3c7ea4eccf mtd: sh_flctl: Add support for error IRQ
When the data transfer between the controller and the NAND chip fails,
we now get notified.

Signed-off-by: Bastian Hecht <hechtb@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-06 18:17:03 +01:00
Bastian Hecht
cb54751d7a mtd: sh_flctl: Add missing iounmap()
Add the unmapping for the error case and for the driver removal.

Signed-off-by: Bastian Hecht <hechtb@gmail.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-06 18:17:03 +01:00
Brian Norris
271b874ba1 mtd: nand: gpmi: need to use {read,write}_oob_raw
This patch is simply an added warning in the comments. Ideally, this patch
need not be merged, but rather, a developer will write a proper solution
that can use the ecc.read_oob_raw and ecc.write_oob_raw interfaces.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Cc: Huang Shijie <b32955@freescale.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-06 18:17:02 +01:00
Brian Norris
b9bc815c2c mtd: cafe_nand: spelling mistake
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>
2012-07-06 18:17:02 +01:00
Brian Norris
9cb93fbb5e mtd: mtdoops: refactor loop
We can clean up the loop logic a bit, here. This refactoring was enabled
in part by:

 Commit bb4a09866 [mtdoops: clean-up new MTD API usage]

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>
2012-07-06 18:17:02 +01:00
Brian Norris
d2d48480d1 mtd: move mtd_read_oob() definition out of mtd.h
mtd_read_oob() will be expanded a little, so don't leave it in the header
as a static inline function.

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>
2012-07-06 18:16:24 +01:00
Herton Ronaldo Krzesinski
596fd46268 mtd: nandsim: don't open code a do_div helper
We don't need to open code the divide function, just use div_u64 that
already exists and do the same job. While this is a straightforward
clean up, there is more to that, the real motivation for this.

While building on a cross compiling environment in armel, using gcc
4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5), I was getting the following build
error:

ERROR: "__aeabi_uldivmod" [drivers/mtd/nand/nandsim.ko] undefined!

After investigating with objdump and hand built assembly version
generated with the compiler, I narrowed __aeabi_uldivmod as being
generated from the divide function. When nandsim.c is built with
-fno-inline-functions-called-once, that happens when
CONFIG_DEBUG_SECTION_MISMATCH is enabled, the do_div optimization in
arch/arm/include/asm/div64.h doesn't work as expected with the open
coded divide function: even if the do_div we are using doesn't have a
constant divisor, the compiler still includes the else parts of the
optimized do_div macro, and translates the divisions there to use
__aeabi_uldivmod, instead of only calling __do_div_asm -> __do_div64 and
optimizing/removing everything else out.

So to reproduce, gcc 4.6 plus CONFIG_DEBUG_SECTION_MISMATCH=y and
CONFIG_MTD_NAND_NANDSIM=m should do it, building on armel.

After this change, the compiler does the intended thing even with
-fno-inline-functions-called-once, and optimizes out as expected the
constant handling in the optimized do_div on arm. As this also avoids a
build issue, I'm marking for Stable, as I think is applicable for this
case.

Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com>
Cc: stable@vger.kernel.org
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-06 16:59:33 +01:00
Sascha Hauer
6023813a2d mtd: gpmi-nand: fix read page when reading to vmalloced area
The gpmi-nand driver uses virt_addr_valid() to check whether a buffer
is suitable for dma. If it's not, a driver allocated buffer is used
instead. Then after a page read the driver allocated buffer must be
copied to the user supplied buffer. This does not happen since commit
7725cc8593.

This patch fixes the issue. The bug is encountered with UBI which uses a
vmalloced buffer for the volume table.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Tested-by: snijsure@grid-net.com
Acked-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>
2012-07-06 15:06:23 +01:00
Sascha Hauer
096bcc231f mtd: mxc_nand: use 32bit copy functions
The following commit changes the function used to copy from/to
the hardware buffer to memcpy_[from|to]io. This does not work
since the hardware cannot handle the byte accesses used by these
functions. Instead of reverting this patch introduce 32bit
correspondents of these functions.

| commit 5775ba36ea9c760c2d7e697dac04f2f7fc95aa62
| Author: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
| Date:   Tue Apr 24 10:05:22 2012 +0200
|
|    mtd: mxc_nand: fix several sparse warnings about incorrect address space
|
|     Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
|     Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-06 15:06:18 +01:00
Dan Carpenter
48f8b64129 mtd: cafe_nand: fix an & vs | mistake
The intent here was clearly to set result to true if the 0x40000000 flag
was set.  But instead there was a | vs & typo and we always set result
to true.

Artem: check the spec at
wiki.laptop.org/images/5/5c/88ALP01_Datasheet_July_2007.pdf
and this fix looks correct.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: stable@vger.kernel.org
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-06 14:27:13 +01:00
Richard Genoud
b4084bcf5a ARM: at91/defconfig: Remove unaffected config option
The commit bf4289cba0 removed the use of
CONFIG_MTD_NAND_ATMEL_ECC_NONE and CONFIG_MTD_NAND_ATMEL_ECC_HW but the
Kconfig file was forgotten.

This patch remove those inoperative options.

Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2012-07-02 16:17:47 +02:00
Linus Torvalds
9a7c6b73c4 Fix the debugfs regression - we never enable it because incorrect
'IS_ENABLED()' macro usage: should be 'IS_ENABLED(CONFIG_DEBUG_FS)',
 but we had 'IS_ENABLED(DEBUG_FS)'. Also fix incorrect assertion.
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Merge tag 'upstream-3.5-rc5' of git://git.infradead.org/linux-ubifs

Pull ubi/ubifs fixes from Artem Bityutskiy:
 "Fix the debugfs regression - we never enable it because incorrect
  'IS_ENABLED()' macro usage: should be 'IS_ENABLED(CONFIG_DEBUG_FS)',
  but we had 'IS_ENABLED(DEBUG_FS)'.  Also fix incorrect assertion."

* tag 'upstream-3.5-rc5' of git://git.infradead.org/linux-ubifs:
  UBI: correct usage of IS_ENABLED()
  UBIFS: correct usage of IS_ENABLED()
  UBIFS: fix assertion
2012-06-28 11:41:43 -07:00
Brian Norris
903e0e4ef9 UBI: correct usage of IS_ENABLED()
Commit "e9b4cf2 UBI: fix debugfs-less systems support" fixed one
regression but introduced a different regression - the debugfs is now always
compiled out. Root cause: IS_ENABLED() arguments should be used with the
CONFIG_* prefix.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-06-27 14:22:15 +03:00
Geert Uytterhoeven
363737d664 mtd/uclinux: Use generic __bss_stop instead of _ebss
The standard (see BSS_SECTION() in <asm-generic/vmlinux.lds.h> and
<asm-generic/sections.h>) symbol for the end of BSS is __bss_stop.
This allows to remove all local declarations that have been added to
several architectures just to please CONFIG_MTD_UCLINUX.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Acked-by: Michal Simek <monstr@monstr.eu>
Acked-by: Greg Ungerer <gerg@uclinux.org>
2012-06-27 09:59:43 +02:00
Kay Sievers
e2ae715d66 kmsg - kmsg_dump() use iterator to receive log buffer content
Provide an iterator to receive the log buffer content, and convert all
kmsg_dump() users to it.

The structured data in the kmsg buffer now contains binary data, which
should no longer be copied verbatim to the kmsg_dump() users.

The iterator should provide reliable access to the buffer data, and also
supports proper log line-aware chunking of data while iterating.

Signed-off-by: Kay Sievers <kay@vrfy.org>
Tested-by: Tony Luck <tony.luck@intel.com>
Reported-by: Anton Vorontsov <anton.vorontsov@linaro.org>
Tested-by: Anton Vorontsov <anton.vorontsov@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-06-15 14:53:59 -07:00
Shmulik Ladkani
ea3b2ea24e mtd: nand: initialize bitflip_threshold prior to BBT scanning
As of edbc454 [mtd: driver _read() returns max_bitflips; mtd_read()
returns -EUCLEAN], 'mtd->bitflip_threshold' must be set for mtd devices
having ECC, prior any 'mtd_read()' call.
Otherwise, 'mtd_read()' will falsely return -EUCLEAN.

Normally, 'mtd->bitflip_threshold' is initialized when the MTD is added.

However, this is too late for NAND MTDs, as 'scan_bbt()' is invoked
prior the existing initialization of 'mtd->bitflip_threshold'.

This is a problem since 'scan_bbt()' calls 'mtd_read()', in the case
of a flash-based bad block table.
It resulted in a falsely reported bitflips indication during BBT read,
which lead to constant scrubbing of the flash BBT blocks.

Initialize 'mtd->bitflip_threshold' to its default value (if not already
set by the driver), prior to invocation of 'scan_bbt()'.

Reported-by: Sascha Hauer <s.hauer@pengutronix.de>
Tested-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Shmulik Ladkani <shmulik.ladkani@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-06-09 12:02:04 +01:00
Artem Bityutskiy
12027f1b3f UBI: correct ubi_wl_flush locking
Commit "62f38455 UBI: modify ubi_wl_flush function to clear work queue for a lnum"
takes the 'work_sem' semaphore in write mode for the entire loop, which is not
very good because it will block other workers for potentially long time. We do
not need to have it in write mode - read mode is enough, and we do not need to
hole it over the entire loop. So this patch turns changes the locking: takes
'work_sem' in read mode and pushes it down to the loop.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-06-07 15:22:21 +03:00
Artem Bityutskiy
e9b4cf2094 UBI: fix debugfs-less systems support
Commit "aa44d1d UBI: remove Kconfig debugging option" broke UBI and it
refuses to initialize if debugfs (CONFIG_DEBUG_FS) is disabled. I incorrectly
assumed that debugfs files creation function will return success if debugfs
is disabled, but they actually return -ENODEV. This patch fixes the issue.

Reported-by: Paul Parsons <lost.distance@yahoo.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Tested-by: Paul Parsons <lost.distance@yahoo.com>
2012-06-07 10:43:54 +03:00
Linus Torvalds
f5e7e844a5 - More robust parsing especially of xattr data in JFFS2
- Updates to mxc_nand and gpmi drivers to support new boards and device tree
  - Improve consistency of information about ECC strength in NAND devices
  - Clean up partition handling of plat_nand
  - Support NAND drivers without dedicated access to OOB area
  - BCH hardware ECC support for OMAP
  - Other fixes and cleanups, and a few new device IDs
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Merge tag 'for-linus-3.5-20120601' of git://git.infradead.org/linux-mtd

Pull mtd update from David Woodhouse:
 - More robust parsing especially of xattr data in JFFS2
 - Updates to mxc_nand and gpmi drivers to support new boards and device tree
 - Improve consistency of information about ECC strength in NAND devices
 - Clean up partition handling of plat_nand
 - Support NAND drivers without dedicated access to OOB area
 - BCH hardware ECC support for OMAP
 - Other fixes and cleanups, and a few new device IDs

Fixed trivial conflict in drivers/mtd/nand/gpmi-nand/gpmi-nand.c due to
added include files next to each other.

* tag 'for-linus-3.5-20120601' of git://git.infradead.org/linux-mtd: (75 commits)
  mtd: mxc_nand: move ecc strengh setup before nand_scan_tail
  mtd: block2mtd: fix recursive call of mtd_writev
  mtd: gpmi-nand: define ecc.strength
  mtd: of_parts: fix breakage in Kconfig
  mtd: nand: fix scan_read_raw_oob
  mtd: docg3 fix in-middle of blocks reads
  mtd: cfi_cmdset_0002: Slight cleanup of fixup messages
  mtd: add fixup for S29NS512P NOR flash.
  jffs2: allow to complete xattr integrity check on first GC scan
  jffs2: allow to discriminate between recoverable and non-recoverable errors
  mtd: nand: omap: add support for hardware BCH ecc
  ARM: OMAP3: gpmc: add BCH ecc api and modes
  mtd: nand: check the return code of 'read_oob/read_oob_raw'
  mtd: nand: remove 'sndcmd' parameter of 'read_oob/read_oob_raw'
  mtd: m25p80: Add support for Winbond W25Q80BW
  jffs2: get rid of jffs2_sync_super
  jffs2: remove unnecessary GC pass on sync
  jffs2: remove unnecessary GC pass on umount
  jffs2: remove lock_super
  mtd: gpmi: add gpmi support for mx6q
  ...
2012-06-01 16:55:42 -07:00
Sascha Hauer
4a43faf54e mtd: mxc_nand: move ecc strengh setup before nand_scan_tail
Since commit 6a918bade9, the mxc_nand driver
fails with:

Driver must set ecc.strength when using hardware ECC

This is because nand_scan_tail checks for correct ecc strength
settings, so we must set them up before nand_scan_tail.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Cc: stable@vger.kernel.org [3.4+]
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-06-01 20:23:29 +01:00
Gabor Juhos
2e24e32e27 mtd: block2mtd: fix recursive call of mtd_writev
The 'mtd_writev' interface calls the function assigned
to the '_write' field of a given mtd device if that is
not NULL. The block2mtd driver sets the '_writev' field
to the 'mtd_writev' function itself and thus causes a
endless loop.

This is caused by 1dbebd3256
(mtd: harmonize mtd_writev usage).

Remove the assignment from the block2mtd driver to fix the
issue.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Cc: stable@kernel.org [3.3+]
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-06-01 20:23:19 +01:00
Marek Vasut
5636ce0f07 mtd: gpmi-nand: define ecc.strength
Fix an issue which was introduced by the recent addition of ecc.strength.

The ecc.strength wasn't set in gpmi-nand, resulting in the following crash:
[    2.550000] kernel BUG at drivers/mtd/nand/nand_base.c:3347!
...
[    2.550000] [<c020841c>] (nand_scan_tail+0x328/0x650) from [<c02f68e0>] (gpmi_nand_probe+0x43c/0x5a4)
[    2.550000] [<c02f68e0>] (gpmi_nand_probe+0x43c/0x5a4) from [<c01f6618>] (platform_drv_probe+0x14/0x18)
[    2.550000] [<c01f6618>] (platform_drv_probe+0x14/0x18) from [<c01f55b0>] (driver_probe_device+0x74/0x1fc)
[    2.550000] [<c01f55b0>] (driver_probe_device+0x74/0x1fc) from [<c01f57cc>] (__driver_attach+0x94/0x98)
[    2.550000] [<c01f57cc>] (__driver_attach+0x94/0x98) from [<c01f3d40>] (bus_for_each_dev+0x50/0x80)
[    2.550000] [<c01f3d40>] (bus_for_each_dev+0x50/0x80) from [<c01f4e18>] (bus_add_driver+0x188/0x25c)
[    2.550000] [<c01f4e18>] (bus_add_driver+0x188/0x25c) from [<c01f5a70>] (driver_register+0x78/0x138)
[    2.550000] [<c01f5a70>] (driver_register+0x78/0x138) from [<c043dc7c>] (gpmi_nand_init+0xc/0x30)
[    2.550000] [<c043dc7c>] (gpmi_nand_init+0xc/0x30) from [<c0008824>] (do_one_initcall+0x108/0x17c)
[    2.550000] [<c0008824>] (do_one_initcall+0x108/0x17c) from [<c042a8b8>] (kernel_init+0xfc/0x1bc)
[    2.550000] [<c042a8b8>] (kernel_init+0xfc/0x1bc) from [<c000fab4>] (kernel_thread_exit+0x0/0x8)

Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-06-01 20:22:21 +01:00
Frank Svendsboe
2e929d001e mtd: of_parts: fix breakage in Kconfig
MTD_OF_PARTS and the default setting is not working due to using 'Y'
instead of 'y', introduced in commit
d6137badef. This made our board, and
possibly other boards using DTS defined partitions and not having
CONFIG_MTD_OF_PARTS=y defined in the defconfig, fail to mount root.

Signed-off-by: Frank Svendsboe <frank.svendsboe@gmail.com>
Cc: stable@kernel.org [3.2+]
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-06-01 20:06:59 +01:00
Linus Torvalds
7e5b2db77b Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS updates from Ralf Baechle:
 "The whole series has been sitting in -next for quite a while with no
  complaints.  The last change to the series was before the weekend the
  removal of an SPI patch which Grant - even though previously acked by
  himself - appeared to raise objections.  So I removed it until the
  situation is clarified.  Other than that all the patches have the acks
  from their respective maintainers, all MIPS and x86 defconfigs are
  building fine and I'm not aware of any problems introduced by this
  series.

  Among the key features for this patch series is a sizable patchset for
  Lantiq which among other things introduces support for Lantiq's
  flagship product, the FALCON SOC.  It also means that the opensource
  developers behind this patchset have overtaken Lantiq's competing
  inhouse development team that was working behind closed doors.

  Less noteworthy the ath79 patchset which adds support for a few more
  chip variants, cleanups and fixes.  Finally the usual dose of tweaking
  of generic code."

Fix up trivial conflicts in arch/mips/lantiq/xway/gpio_{ebu,stp}.c where
printk spelling fixes clashed with file move and eventual removal of the
printk.

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (81 commits)
  MIPS: lantiq: remove orphaned code
  MIPS: Remove all -Wall and almost all -Werror usage from arch/mips.
  MIPS: lantiq: implement support for FALCON soc
  MTD: MIPS: lantiq: verify that the NOR interface is available on falcon soc
  MTD: MIPS: lantiq: implement OF support
  watchdog: MIPS: lantiq: implement OF support and minor fixes
  SERIAL: MIPS: lantiq: implement OF support
  GPIO: MIPS: lantiq: convert gpio-stp-xway to OF
  GPIO: MIPS: lantiq: convert gpio-mm-lantiq to OF and of_mm_gpio
  GPIO: MIPS: lantiq: move gpio-stp and gpio-ebu to the subsystem folder
  MIPS: pci: convert lantiq driver to OF
  MIPS: lantiq: convert dma to platform driver
  MIPS: lantiq: implement support for clkdev api
  MIPS: lantiq: drop ltq_gpio_request() and gpio_to_irq()
  OF: MIPS: lantiq: implement irq_domain support
  OF: MIPS: lantiq: implement OF support
  MIPS: lantiq: drop mips_machine support
  OF: PCI: const usage needed by MIPS
  MIPS: Cavium: Remove smp_reserve_lock.
  MIPS: Move cache setup to setup_arch().
  ...
2012-05-29 18:27:19 -07:00
Dmitry Maluka
34a5704d91 mtd: nand: fix scan_read_raw_oob
It seems there is a bug in scan_read_raw_oob() in nand_bbt.c which
should cause wrong functioning of NAND_BBT_SCANALLPAGES option.

Artem: the patch did not apply and I had to amend it a bit.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Cc: stable@kernel.org
2012-05-29 11:14:58 +03:00
Robert Jarzmik
52c2d9aad4 mtd: docg3 fix in-middle of blocks reads
Corner case reads do not work, and return false data and
ECC. This case is typically seen in a ubifs usage, with a
read of type:
 - docg3 docg3: doc_read_oob(from=14882415, mode=1,
 data=(c30eca40:12), oob=(  (null):0))

This results in the following reads:
 - docg3 docg3: doc_read_data_area(buf=  (null), len=111)
 - docg3 docg3: doc_read_data_area(buf=c30eca40, len=12)
 - docg3 docg3: doc_read_data_area(buf=  (null), len=389)
 - docg3 docg3: doc_read_data_area(buf=  (null), len=0)
 - docg3 docg3: doc_read_data_area(buf=  (null), len=16)

If we suppose that the pages content is :
 - bytes 0 .. 111   : 0x0a
 - bytes 112 .. 255 : 0x0f
Then the returned bytes will be :
 - 111 times 0x0a (correct)
 - 0x0a 2 times and 0x0f 10 times (incorrect, should be
 0x0a,0x0f)
 - 0x0f 389 times (correct)
 - nothing
 - correct OOB

The reason seams that the first 111 bytes read ends between
the 2 docg3 planes, and that the first following read (in
the 12 bytes sequence, read of 16 bit word) returns the byte
of the rightmost plane duplicated in high and lower byte of
the word.

Fix this behaviour by ensuring that if the previous read
ended up in-between the 2 planes, there will be a first 1
byte read to get back to the beginning of leftmost plane.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-05-29 11:14:51 +03:00
Linus Torvalds
2795343705 arm-soc: clock driver changes
The new clock subsystem was merged in linux-3.4 without any users, this
 now moves the first three platforms over to it: imx, mxs and spear.
 
 The series also contains the changes for the clock subsystem itself,
 since Mike preferred to have it together with the platforms that require
 these changes, in order to avoid interdependencies and conflicts.
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Merge tag 'clock' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull arm-soc clock driver changes from Olof Johansson:
 "The new clock subsystem was merged in linux-3.4 without any users,
  this now moves the first three platforms over to it: imx, mxs and
  spear.

  The series also contains the changes for the clock subsystem itself,
  since Mike preferred to have it together with the platforms that
  require these changes, in order to avoid interdependencies and
  conflicts."

Fix up trivial conflicts in arch/arm/mach-kirkwood/common.c (code
removed in one branch, added OF support in another) and
drivers/dma/imx-sdma.c (independent changes next to each other).

* tag 'clock' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (97 commits)
  clk: Fix CLK_SET_RATE_GATE flag validation in clk_set_rate().
  clk: Provide dummy clk_unregister()
  SPEAr: Update defconfigs
  SPEAr: Add SMI NOR partition info in dts files
  SPEAr: Switch to common clock framework
  SPEAr: Call clk_prepare() before calling clk_enable
  SPEAr: clk: Add General Purpose Timer Synthesizer clock
  SPEAr: clk: Add Fractional Synthesizer clock
  SPEAr: clk: Add Auxiliary Synthesizer clock
  SPEAr: clk: Add VCO-PLL Synthesizer clock
  SPEAr: Add DT bindings for SPEAr's timer
  ARM i.MX: remove now unused clock files
  ARM: i.MX6: implement clocks using common clock framework
  ARM i.MX35: implement clocks using common clock framework
  ARM i.MX5: implement clocks using common clock framework
  ARM: Kirkwood: Replace clock gating
  ARM: Orion: Audio: Add clk/clkdev support
  ARM: Orion: PCIE: Add support for clk
  ARM: Orion: XOR: Add support for clk
  ARM: Orion: CESA: Add support for clk
  ...
2012-05-26 12:42:29 -07:00
Linus Torvalds
6133308ad1 UBIFS:
* Always support xattrs    (remove the Kconfig option)
    * Always support debugging (remove the Kconfig option)
    * A fix for a memory leak on error path
    * A number of clean-ups
 UBI:
    * Always support debugging (remove the Kconfig option)
    * Remove "data type" hint support
    * Huge amount of renames to prepare for the fastmap wor
    * A lot of clean-ups
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Merge tag 'upstream-3.5-rc1' of git://git.infradead.org/linux-ubifs

Pull UBI and UBIFS updates from Artem Bityutskiy:

UBIFS:
   * Always support xattrs    (remove the Kconfig option)
   * Always support debugging (remove the Kconfig option)
   * A fix for a memory leak on error path
   * A number of clean-ups
UBI:
   * Always support debugging (remove the Kconfig option)
   * Remove "data type" hint support
   * Huge amount of renames to prepare for the fastmap wor
   * A lot of clean-ups

* tag 'upstream-3.5-rc1' of git://git.infradead.org/linux-ubifs: (54 commits)
  UBI: modify ubi_wl_flush function to clear work queue for a lnum
  UBI: introduce UBI_ALL constant
  UBI: add lnum and vol_id to struct ubi_work
  UBI: add volume id struct ubi_ainf_peb
  UBI: add in hex the value for UBI_INTERNAL_VOL_START to comment
  UBI: rename scan.c to attach.c
  UBI: remove scan.h
  UBI: rename UBI_SCAN_UNKNOWN_EC
  UBI: move and rename attach_by_scanning
  UBI: rename _init_scan functions
  UBI: amend comments after all the renamings
  UBI: rename ubi_scan_leb_slab
  UBI: rename ubi_scan_move_to_list
  UBI: rename ubi_scan_destroy_ai
  UBI: rename ubi_scan_get_free_peb
  UBI: rename ubi_scan_rm_volume
  UBI: rename ubi_scan_find_av
  UBI: rename ubi_scan_add_used
  UBI: remove unused function
  UBI: make ubi_scan_erase_peb static and rename
  ...
2012-05-22 19:30:27 -07:00
Linus Torvalds
e8650a0823 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
Pull trivial updates from Jiri Kosina:
 "As usual, it's mostly typo fixes, redundant code elimination and some
  documentation updates."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (57 commits)
  edac, mips: don't change code that has been removed in edac/mips tree
  xtensa: Change mail addresses of Hannes Weiner and Oskar Schirmer
  lib: Change mail address of Oskar Schirmer
  net: Change mail address of Oskar Schirmer
  arm/m68k: Change mail address of Sebastian Hess
  i2c: Change mail address of Oskar Schirmer
  net: Fix tcp_build_and_update_options comment in struct tcp_sock
  atomic64_32.h: fix parameter naming mismatch
  Kconfig: replace "--- help ---" with "---help---"
  c2port: fix bogus Kconfig "default no"
  edac: Fix spelling errors.
  qla1280: Remove redundant NULL check before release_firmware() call
  remoteproc: remove redundant NULL check before release_firmware()
  qla2xxx: Remove redundant NULL check before release_firmware() call.
  aic94xx: Get rid of redundant NULL check before release_firmware() call
  tehuti: delete redundant NULL check before release_firmware()
  qlogic: get rid of a redundant test for NULL before call to release_firmware()
  bna: remove redundant NULL test before release_firmware()
  tg3: remove redundant NULL test before release_firmware() call
  typhoon: get rid of redundant conditional before all to release_firmware()
  ...
2012-05-22 19:22:50 -07:00
Linus Torvalds
f6a26ae769 arm-soc: board specific changes
While we generally attempt to get rid of board specific files and replace
 them with device tree based descriptions, a lot of platforms have not
 come that far:
 
 In shmobile, we add two new board files because their recently started
 effort to add DT support has not proceeded enough to use it for all of
 the important hardware.
 
 In Kirkwood, we are adding support for new boards with a combination of
 DT and board file contents in multiple cases.
 
 pxa/mmp and imx are extending support for existing board files but not
 adding new ones.
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Merge tag 'boards' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull arm-soc board specific changes from Olof Johansson:
 "While we generally attempt to get rid of board specific files and
  replace them with device tree based descriptions, a lot of platforms
  have not come that far:

  In shmobile, we add two new board files because their recently started
  effort to add DT support has not proceeded enough to use it for all of
  the important hardware.

  In Kirkwood, we are adding support for new boards with a combination
  of DT and board file contents in multiple cases.

  pxa/mmp and imx are extending support for existing board files but not
  adding new ones."

Fix up trivial conflicts in arch/arm/mach-{mmp/ttc_dkb.c,shmobile/{Kconfig,Makefile}}

* tag 'boards' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (94 commits)
  ARM: shmobile: fix smp build
  ARM: kirkwood: Add support for RaidSonic IB-NAS6210/6220 using devicetree
  kirkwood: Add iconnect support
  orion/kirkwood: create a generic function for gpio led blinking
  kirkwood/orion: fix orion_gpio_set_blink
  ARM: kirkwood: Define DNS-320/DNS-325 NAND in fdt
  kirkwood: Allow nand to be configured via. devicetree
  mtd: Add orion_nand devicetree bindings
  ARM: kirkwood: Basic support for DNS-320 and DNS-325
  ARM: mach-shmobile: Use DT_MACHINE for armadillo 800 eva
  ARM: mach-shmobile: Use DT_MACHINE for KZM9G
  ARM: pxa: hx4700: Add Synaptics NavPoint touchpad
  ARM: pxa: Use REGULATOR_SUPPLY macro
  ARM: mach-shmobile: kzm9g: enable SMP boot
  ARM: mach-shmobile: kzm9g: defconfig update
  ARM: mach-shmobile: kzm9g: add PCF8757 gpio-key
  ARM: mach-shmobile: kzm9g: add SDHI support
  ARM: mach-shmobile: kzm9g: add MMCIF support
  ARM: mach-shmobile: kzm9g: correct screen direction
  ARM: mach-shmobile: sh73a0.h: add GPIO_NR
  ...
2012-05-22 13:32:53 -07:00
Linus Torvalds
813a95e5b4 arm-soc: soc-specific pinctrl changes
With this, five platforms are moving to the relatively new pinctrl
 subsystem for their pin management, replacing the older soc specific
 in-kernel interfaces with common code.
 
 There is quite a bit of net addition of code for each platform being
 added to the pinctrl subsystem. but the payback comes later when adding
 new boards can be done by only providing new device trees instead.
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Merge tag 'pinctrl' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull arm soc-specific pinctrl changes from Olof Johansson:
 "With this, five platforms are moving to the relatively new pinctrl
  subsystem for their pin management, replacing the older soc specific
  in-kernel interfaces with common code.

  There is quite a bit of net addition of code for each platform being
  added to the pinctrl subsystem.  But the payback comes later when
  adding new boards can be done by only providing new device trees
  instead."

Fix up trivial conflicts in arch/arm/mach-ux500/{Makefile,board-mop500.c}

* tag 'pinctrl' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (61 commits)
  mtd: nand: gpmi: fix compile error caused by pinctrl call
  ARM: PRIMA2: select PINCTRL and PINCTRL_SIRF in Kconfig
  ARM: nomadik: enable PINCTRL_NOMADIK where needed
  ARM: mxs: enable pinctrl support
  video: mxsfb: adopt pinctrl support
  ASoC: mxs-saif: adopt pinctrl support
  i2c: mxs: adopt pinctrl support
  mtd: nand: gpmi: adopt pinctrl support
  mmc: mxs-mmc: adopt pinctrl support
  serial: mxs-auart: adopt pinctrl support
  serial: amba-pl011: adopt pinctrl support
  spi/imx: adopt pinctrl support
  i2c: imx: adopt pinctrl support
  can: flexcan: adopt pinctrl support
  net: fec: adopt pinctrl support
  ARM: ux500: switch MSP to using pinctrl for pins
  ARM: ux500: alter MSP registration to return a device pointer
  ARM: ux500: switch to using pinctrl for uart0
  ARM: ux500: delete custom pin control system
  ARM: ux500: switch over to Nomadik pinctrl driver
  ...
2012-05-22 09:39:42 -07:00
Linus Torvalds
9bc747bea5 arm-soc: First batch of cleanups
These cleanups are basically all over the place. The idea is to collect
 changes with minimal impact but large number of changes so we can avoid
 them from distracting in the diffstat in the other series.
 
 A significant number of lines get removed here, in particular because
 the ixp2000 and ixp23xx platforms get removed. These have never been
 extremely popular and have fallen into disuse over time with no active
 maintainer taking care of them. The u5500 soc never made it into a
 product, so we are removing it from the ux500 platform.
 
 Many good cleanups also went into the at91 and omap platforms, as has
 been the case for a number of releases.
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Merge tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull first batch of arm-soc cleanups from Olof Johansson:
 "These cleanups are basically all over the place.  The idea is to
  collect changes with minimal impact but large number of changes so we
  can avoid them from distracting in the diffstat in the other series.

  A significant number of lines get removed here, in particular because
  the ixp2000 and ixp23xx platforms get removed.  These have never been
  extremely popular and have fallen into disuse over time with no active
  maintainer taking care of them.  The u5500 soc never made it into a
  product, so we are removing it from the ux500 platform.

  Many good cleanups also went into the at91 and omap platforms, as has
  been the case for a number of releases."

Trivial modify-delete conflicts in arch/arm/mach-{ixp2000,ixp23xx}

* tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (152 commits)
  ARM: clps711x: Cleanup IRQ handling
  ARM clps711x: Removed unused header mach/time.h
  ARM: clps711x: Added note about support EP731x CPU to Kconfig
  ARM: clps711x: Added missing register definitions
  ARM: clps711x: Used own subarch directory for store header file
  Dove: Fix Section mismatch warnings
  ARM: orion5x: ts78xx debugging changes
  ARM: orion5x: remove PM dependency from ts78xx
  ARM: orion5x: ts78xx fix NAND resource off by one
  ARM: orion5x: ts78xx whitespace cleanups
  Orion5x: Fix Section mismatch warnings
  Orion5x: Fix warning: struct pci_dev declared inside paramter list
  ARM: clps711x: Combine header files into one for clps711x-targets
  ARM: S3C24XX: Use common macro to define resources on mach-qt2410.c
  ARM: S3C24XX: Use common macro to define resources on mach-osiris.c
  ARM: EXYNOS: Adapt to cpuidle core time keeping and irq enable
  ARM: S5PV210: Use common macro to define resources on mach-smdkv210.c
  ARM: S5PV210: Use common macro to define resources on dev-audio.c
  ARM: S5PC100: Use common macro to define resources on dev-audio.c
  ARM: S5P64X0: Use common macro to define resources on dev-audio.c
  ...
2012-05-22 09:23:24 -07:00
John Crispin
fa09eded0e MTD: MIPS: lantiq: verify that the NOR interface is available on falcon soc
When running on a FALC-ON SoC, we need to check the bootstrap options to see
if NOR is available.

Signed-off-by: John Crispin <blogic@openwrt.org>
Acked-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Cc: linux-mtd@lists.infradead.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3815/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-05-21 14:31:55 +01:00
John Crispin
02fa961fbf MTD: MIPS: lantiq: implement OF support
Adds bindings for OF and make use of module_platform_driver for lantiq
based socs.

Signed-off-by: John Crispin <blogic@openwrt.org>
Acked-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Cc: linux-mtd@lists.infradead.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3811/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-05-21 14:31:55 +01:00
Joel Reardon
62f384552b UBI: modify ubi_wl_flush function to clear work queue for a lnum
This patch modifies ubi_wl_flush to force the erasure of
particular volume id / logical eraseblock number pairs. Previous functionality
is preserved when passing UBI_ALL for both values. The locations where ubi_wl_flush
were called are appropriately changed: ubi_leb_erase only flushes for the
erased LEB, and ubi_create_volume forces only flushing for its volume id.
External code can call this new feature via the new function ubi_flush() added
to kapi.c, which simply passes through to ubi_wl_flush().

This was tested by disabling the call to do_work in ubi thread, which results
in the work queue remaining unless explicitly called to remove. UBIFS was
changed to call ubifs_leb_change 50 times for four different LEBs. Then the
new function was called to clear the queue: passing wrong volume ids / lnum,
correct ones, and finally UBI_ALL for both to ensure it was finally all
cleard. The work queue was dumped each time and the selective removal
of the particular LEB numbers was observed. Extra checks were enabled and
ubifs's integck was also run. Finally, the drive was repeatedly filled and
emptied to ensure that the queue was cleared normally.

Artem: amended the patch.

Signed-off-by: Joel Reardon <reardonj@inf.ethz.ch>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-05-21 11:34:41 +03:00
Artem Bityutskiy
05a3cb7dce UBI: introduce UBI_ALL constant
Joel will use it in his 'ubi_flush()' extention to specify all eraseblocks.
Also amend the comment for UBI_UNKNOWN - it is used beyond attaching info
structure now.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-05-21 11:34:41 +03:00
Joel Reardon
d36e59e69b UBI: add lnum and vol_id to struct ubi_work
This is part of a multipart patch to allow UBI to force the erasure of
particular logical eraseblock numbers. In this patch, the volume id and LEB
number are added to ubi_work data structure, and both are also passed as a
parameter to schedule erase to set it appropriately. Whenever ubi_wl_put_peb
is called, the lnum is also passed to be forwarded to schedule erase. Later,
a new ubi_sync_lnum will be added to execute immediately all work related to
that lnum.

This was tested by outputting the vol_id and lnum during the schedule of
erasure. The ubi thread was disabled and two ubifs drives on separate
partitions repeated changed a small number of LEBs. The ubi module was readded,
and all the erased LEBs, corresponding to the volumes, were added to the
schedule erase queue.

Artem: minor tweaks

Signed-off-by: Joel Reardon <reardonj@inf.ethz.ch>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-05-21 11:34:41 +03:00
Joel Reardon
6dd3bc7e60 UBI: add volume id struct ubi_ainf_peb
This patch adds the volume id to struct ubi_ainf_peb when scanning the LEBs at
startup. PEBs now added to the erase queue will know their original LEB number
and volume id, if available, and will be -1 otherwise (for instance, if the VID
header is unreadable).

This was tested by creating an ubi device with 3 volumes and disabiling the
ubi_thread's do_work functionality. The different ubi volumes were formatted
to ubifs and had files created and erased.  The ubi modules was reloaded and
the list of LEB's added to the erased list was outputted, confirming the
volume ids and LEB numbers were appropriate.

Signed-off-by: Joel Reardon <reardonj@inf.ethz.ch>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-05-21 11:34:41 +03:00
Joel Reardon
5cc09420e2 UBI: add in hex the value for UBI_INTERNAL_VOL_START to comment
Explicitly provide the first internal volume ID value in the comment for
UBI_INTERNAL_VOL_START. This allows developers who, when adding features
related to volume ids and observe unexpected very large volume ids, to grep
for the observed value in the source code and find out immediately that it is
expected behaviour.

Signed-off-by: Joel Reardon <reardonj@inf.ethz.ch>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-05-20 21:30:45 +03:00
Artem Bityutskiy
ae4a8104e3 UBI: rename scan.c to attach.c
Finally, rename the scan.c file. Now adding fastmap support won't look that
hacky anymore.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-05-20 21:01:28 +03:00
Artem Bityutskiy
0479ab48bb UBI: remove scan.h
This file is small and it does not make sense to have it separate from where
everything else lives, so merge it with ubi.h.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-05-20 21:01:28 +03:00
Artem Bityutskiy
9c47fb2fbe UBI: rename UBI_SCAN_UNKNOWN_EC
Rename the constant to UBI_UNKNOWN, for the same reason that we are going
to add nother attaching method and re-use the same data structures, so the
"SCAN" in the name becomes incorrect. I've also removed the "_EC" part because
Joel is going to use this constant for other fields in the attaching info data
structures.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-05-20 21:01:28 +03:00
Artem Bityutskiy
47e1ec70b2 UBI: move and rename attach_by_scanning
Rename the 'attach_by_scanning()' function to 'ubi_attach()' and move it to
scan.c. Richard will plug his fastmap stuff there.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-05-20 20:26:04 +03:00
Artem Bityutskiy
41e0cd9d4e UBI: rename _init_scan functions
We have a couple of initialization funcntionsn left which have "_scan" suffic -
rename them:

ubi_eba_init_scan() -> ubi_eba_init()
ubi_wl_init_scan() -> ubi_wl_init()

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-05-20 20:26:04 +03:00