We still need to support platform data for omap3 until it's booting
in device tree only mode. So let's add platform_data/omap-gpmc.h for
that, and a minimal linux/omap-gpmc.h for the save and restore used
by the PM code.
Let's also keep a minimal mach-omap2/gpmc.h still around to avoid
churn on the board-*.c files. Once omap3 boots in device tree only
mode, we can drop mach-omap2/gpmc.h and we can make the data
structures in platform_data/omap-gpmc.h private to the GPMC driver.
Note that we can now also remove gpmc-nand.h and gpmc-onenand.h.
Cc: Arnd Bergmann <arnd@arndb.de>
Acked-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
For v3.12 and prior, 1-bit Hamming code ECC via software was the
default choice. Commit c66d039197 in v3.13 changed the behaviour
to use 1-bit Hamming code via Hardware using a different ECC layout
i.e. (ROM code layout) than what is used by software ECC.
This ECC layout change causes NAND filesystems created in v3.12
and prior to be unusable in v3.13 and later. So revert back to
using software ECC by default if an ECC scheme is not explicitely
specified.
This defect can be observed on the following boards during legacy boot
-omap3beagle
-omap3touchbook
-overo
-am3517crane
-devkit8000
-ldp
-3430sdp
Signed-off-by: Roger Quadros <rogerq@ti.com>
Tested-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This merge window brings a good size of cleanups on various
platforms. Among the bigger ones:
* Removal of Samsung s5pc100 and s5p64xx platforms. Both of these have
lacked active support for quite a while, and after asking around nobody
showed interest in keeping them around. If needed, they could be
resurrected in the future but it's more likely that we would prefer
reintroduction of them as DT and multiplatform-enabled platforms
instead.
* OMAP4 controller code register define diet. They defined a lot of registers
that were never actually used, etc.
* Move of some of the Tegra platform code (PMC, APBIO, fuse, powergate)
to drivers/soc so it can be shared with 64-bit code. This also converts them
over to traditional driver models where possible.
* Removal of legacy gpio-samsung driver, since the last users have been
removed (moved to pinctrl)
Plus a bunch of smaller changes for various platforms that sort of
dissapear in the diffstat for the above. clps711x cleanups, shmobile
header file refactoring/moves for multiplatform friendliness, some misc
cleanups, etc.
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Merge tag 'cleanup-for-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC cleanups from Olof Johansson:
"This merge window brings a good size of cleanups on various platforms.
Among the bigger ones:
- Removal of Samsung s5pc100 and s5p64xx platforms. Both of these
have lacked active support for quite a while, and after asking
around nobody showed interest in keeping them around. If needed,
they could be resurrected in the future but it's more likely that
we would prefer reintroduction of them as DT and
multiplatform-enabled platforms instead.
- OMAP4 controller code register define diet. They defined a lot of
registers that were never actually used, etc.
- Move of some of the Tegra platform code (PMC, APBIO, fuse,
powergate) to drivers/soc so it can be shared with 64-bit code.
This also converts them over to traditional driver models where
possible.
- Removal of legacy gpio-samsung driver, since the last users have
been removed (moved to pinctrl)
Plus a bunch of smaller changes for various platforms that sort of
dissapear in the diffstat for the above. clps711x cleanups, shmobile
header file refactoring/moves for multiplatform friendliness, some
misc cleanups, etc"
* tag 'cleanup-for-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (117 commits)
drivers: CCI: Correct use of ! and &
video: clcd-versatile: Depend on ARM
video: fix up versatile CLCD helper move
MAINTAINERS: Add sdhci-st file to ARCH/STI architecture
ARM: EXYNOS: Fix build breakge with PM_SLEEP=n
MAINTAINERS: Remove Kirkwood
ARM: tegra: Convert PMC to a driver
soc/tegra: fuse: Set up in early initcall
ARM: tegra: Always lock the CPU reset vector
ARM: tegra: Setup CPU hotplug in a pure initcall
soc/tegra: Implement runtime check for Tegra SoCs
soc/tegra: fuse: fix dummy functions
soc/tegra: fuse: move APB DMA into Tegra20 fuse driver
soc/tegra: Add efuse and apbmisc bindings
soc/tegra: Add efuse driver for Tegra
ARM: tegra: move fuse exports to soc/tegra/fuse.h
ARM: tegra: export apb dma readl/writel
ARM: tegra: Use a function to get the chip ID
ARM: tegra: Sort includes alphabetically
ARM: tegra: Move includes to include/soc/tegra
...
This patch adds bch8 ecc software fallback which is mostly used by
omap3s because they lack hardware elm support.
Fixes: 0611c41934 (ARM: OMAP2+: gpmc:
update gpmc_hwecc_bch_capable() for new platforms and ECC schemes)
Cc: <stable@vger.kernel.org> # 3.15.x+
Signed-off-by: Christoph Fritz <chf.fritz@googlemail.com>
Reviewed-by: Pekon Gupta <pekon@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
GPMC controller supports up to 8 memory devices connected to it.
Since there is one statically allocated "struct platform_device
gpmc_nand_device" it is not possible to configure the system to
use more than one NAND device connected to the GPMC. This
modification makes it possible to use up to 8 NAND devices
connected to the GPMC controller.
Signed-off-by: Rostislav Lisovy <lisovy@merica.cz>
Signed-off-by: Roger Quadros <rogerq@ti.com>
Fixes: commit 0611c41934
ARM: OMAP2+: gpmc: update gpmc_hwecc_bch_capable() for new platforms and ECC schemes
Though the commit log of above commit mentions AM43xx platforms, but code change
missed AM43xx. This patch adds AM43xx to list of those SoC which have built-in
ELM hardware engine, so that BCH ecc-schemes with hardware error-correction can
be enabled on AM43xx devices.
Reported-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Pekon Gupta <pekon@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This patch
- refactors gpmc_hwecc_bch_capable()
- add checks for new platforms like dra7xx, am43xx
- add checks for OMAP3 SoC, w.r.t. new ECC schemes spawned in following commit:
commit ac65caf514
ARM: OMAP2+: cleaned-up DT support of various ECC schemes
Signed-off-by: Pekon Gupta <pekon@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
After the introduction of gpmc_set_legacy(), move the GPMC width setting
to be done inside it. Currently, in the DT probed case, this is (wrongly)
done twice: first at gpmc_read_settings_dt(), and then based in the
NAND width setting.
Fix this and use only the value obtained from the DT.
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Introduce a helper function to complete the setting of some GPMC
parameters, only used when the gpmc is probed from a board file.
As such, it will go away once the DT conversion is completed.
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit moves a bunch of initialization previously enclosed
under a 'if (gpmc_t)' check, to be outside such condition.
These initializations are not related to gpmc_t (timings) in any way
so it's nonsense to enclose them under such check.
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Commit 8c8a777 (ARM: OMAP2+: Add function to read GPMC settings from
device-tree) added a device-tree property "gpmc,device-nand" to indicate
is the GPMC child device is NAND. This commit should have updated the
GPMC NAND documentation (Documentation/devicetree/bindings/mtd/gpmc-nand.txt)
to list the property "gpmc,device-nand" as a required property and also
updated the example. However, this property is redundant and not needed
because the GPMC child device node for NAND is called "nand". Therefore,
remove this property.
Signed-off-by: Jon Hunter <jon-hunter@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This patch removes omap2_nand_gpmc_retime() which was used to quirk
some timing values before gpmc_cs_set_timings(). Due to recent changes,
gpmc_cs_set_timings() has evolved so that there is no more need for a
retime function.
To keep the gpmc configuration consistent for legacy board files, this
patch also adds oe_on and we_on to nand_default_timings[] as they
would be by the retime function.
Signed-off-by: Christoph Fritz <chf.fritz@googlemail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
When booting with device-tree, retrieve GPMC settings for NAND from
the device-tree blob. This will allow us to remove all static settings
stored in the gpmc-nand.c in the future once the migration to
device-tree is complete.
Signed-off-by: Jon Hunter <jon-hunter@ti.com>
Tested-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
With the addition of the gpmc_cs_program_settings(), we no longer need
or use gpmc_cs_configure() to configure some of the GPMC chip-select
options. So rename the function to gpmc_configure() and remove code that
modifies options in the CONFIG1 register.
Signed-off-by: Jon Hunter <jon-hunter@ti.com>
Tested-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Convert the OMAP2+ NAND code to use the gpmc_cs_program_settings()
function for configuring the various GPMC options instead of directly
programming the CONFIG1 register.
This moves the configuration of some GPMC options outside the
nand_gpmc_retime() because these options should only need to be set once
regardless of whether the gpmc timing is changing dynamically at runtime.
The programming of where the wait-pin is also moved slightly, but this
will not have any impact to existing devices as no boards are currently
setting the dev_ready variable.
Signed-off-by: Jon Hunter <jon-hunter@ti.com>
Tested-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
If CS request fails the current error message is rather unhelpful.
Fix it by printing the failing chip select and the error code.
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Reviewed-by: Jon Hunter <jon-hunter@ti.com>
Signed-off-by: Jon Hunter <jon-hunter@ti.com>
The am33xx is capable of handling bch error correction modes, so
enable that feature in the driver.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Tony Lindgren <tony@atomide.com>
gpmc_nand_init() will be called from another driver's probe() function,
so the easiest way to prevent section mismatches is to drop the
annotation here.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Tony Lindgren <tony@atomide.com>
gpmc_cs_set_timings() calculate ticks to be programmed by
rounding time in ns to next tick value. Hence remove
redundant rounding of nanosecond timing.
Signed-off-by: Afzal Mohammed <afzal@ti.com>
Requirement of gpmc header outside of mach-omap2 has been
cutoff, move gpmc header file in plat-omap folder to local
mach-omap2 folder
Objective - common zImage participation of omap
Signed-off-by: Afzal Mohammed <afzal@ti.com>
Capability of bch schemes could be discovered using soc
revision checks. If soc revision indicates that selected
ecc scheme is not supported bail out.
Signed-off-by: Afzal Mohammed <afzal@ti.com>
For common arm zImage existing nand header file
in platform specific location was moved to generic
platform data location, but it contained more than
platform data, remove it. New local header has been
created for exposing functions.
Also move gpmc-nand platform data to platform header
meant for nand from gpmc header file
Signed-off-by: Afzal Mohammed <afzal@ti.com>
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
As the plat and mach includes need to disappear for single zImage work,
we need to remove plat/hardware.h.
Do this by splitting plat/hardware.h into omap1 and omap2+ specific files.
The old plat/hardware.h already has omap1 only defines, so it gets moved
to mach/hardware.h for omap1. For omap2+, we use the local soc.h
that for now just includes the related SoC headers to keep this patch more
readable.
Note that the local soc.h still includes plat/cpu.h that can be dealt
with in later patches. Let's also include plat/serial.h from common.h for
all the board-*.c files. This allows making the include files local later
on without patching these files again.
Note that only minimal changes are done in this patch for the
drivers/watchdog/omap_wdt.c driver to keep things compiling. Further
patches are needed to eventually remove cpu_is_omap usage in the drivers.
Also only minimal changes are done to sound/soc/omap/* to remove the
unneeded includes and to define OMAP44XX_MCPDM_L3_BASE locally so there's
no need to include omap44xx.h.
While at it, also sort some of the includes in the standard way.
Cc: linux-watchdog@vger.kernel.org
Cc: alsa-devel@alsa-project.org
Cc: Peter Ujfalusi <peter.ujfalusi@ti.com>
Cc: Jarkko Nikula <jarkko.nikula@bitmer.com>
Cc: Liam Girdwood <lrg@ti.com>
Acked-by: Wim Van Sebroeck <wim@iguana.be>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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.
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>
Now GPMC provides its client with interrupts that can be handled
using the standard interrupt API. Modify GPMC NAND setup to work
with it.
Also disable write protect in GPMC code, so that NAND driver can
be ignorant of GPMC configuration.
Signed-off-by: Afzal Mohammed <afzal@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Currently omap nand driver uses a field in platform data - phys_base
for passing the address space allocated by gpmc for nand. Use struct
resource instead. With this change omap nand driver has to get
address space from memory resource.
This helps in smooth migration of gpmc to driver.
Signed-off-by: Afzal Mohammed <afzal@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
GPMC has NAND registers, update nand platform data with those details
so that NAND driver can configure those by itself instead of using
exported symbols.
Signed-off-by: Afzal Mohammed <afzal@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This is needed to minimize io.h so the SoC specific io.h
for ARMs can removed.
Note that minimal driver changes for DSS and RNG are needed to
include cpu.h for SoC detection macros.
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Matt Mackall <mpm@selenic.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Tony Lindgren <tony@atomide.com>
omap_nand_platform_data fields 'options', 'gpio_irq', 'nand_setup' and
'dma_channel' are never referenced by the NAND driver, yet various
board files are initializing those fields. This is both incorrect and
confusing, so remove them. This allows to get rid of a global
variable in gpmc-nand.c.
This also corrects an issue where some boards are trying to pass NAND
16bit flag through .options, but the driver is using .devsize instead
and ignoring .options.
Finally, .dev_ready is treated as a flag by the driver, so make it bool
instead of a function pointer.
Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
zoom3 and 3630-sdp having the x16 nand device.
This patch configure gpmc as x16 and select the currect function in driver
for polled mode (without prefetch enable) transfer.
Signed-off-by: Sukumar Ghorai <s-ghorai@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
The calculations done with sync_clk are anyway in picoseconds
and switching to picoseconds allows sync_clk values that are
not a whole number of nanoseconds - which is sometimes the
case.
Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This patch removes direct reference of gpmc address from generic nand platform code.
Nand platform code now uses wrapper functions which are implemented in gpmc module.
Signed-off-by: Sukumar Ghorai <s-ghorai@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
If gpmc_t isn't given, we don't need to set timing for gpmc, or it will cause
a Oops.
Signed-off-by: Stanley.Miao <stanley.miao@windriver.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Introducing 'gpmc-nand.c' for GPMC specific NAND init.
For example: GPMC timing parameters and all.
This patch also migrates gpmc related calls from 'nand/omap2.c'
to 'gpmc-nand.c'.
Signed-off-by: Vimal Singh <vimalsingh@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
